3.a3 Be7 4.e3 d5 5.d3 c6 6.Nf3 Be6 7.Be2 Bd6 8.Nbd2 Nd7 9.c4 Ne7 10.0-0 0-0 11.Rc1 Bf7 12.cd5 cd5 13.Rc2 Rc8 14.Qb1 Rc2 15.Qc2 Bc7 16.Rc1 Bb6 17.d4 e4 18.Ne1 Nc6 19.Qb1 Qe7 20.Nb3 Qd6 21.Nc5 Bc5 22.bc5 Qe6 23.Nc2 Rc8 24.Nb4 Nb4 25.ab4 a6 26.b5 ab5 27.Bb5 Nf8 28.Bc3 Rb8 29.Qa1 Be8 30.Be8 Re8 31.Qa7 Qe7 32.Rb1+– (32.Rb1 Qe6 33.Qb7+–) 1–0. exp2005 – mateicristian, internet, 2011.

3.b5 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 f6)

3.b5 e4 4.Nc3 d5 5.d3 (5.e3 f5 6.Nh3 Nf6+=) 5...Bb4 6.e3 (6.de4 d4 7.Qd2 dc3 8.Bc3 Qd2 9.Kd2 Bc3 10.Kc3 Nh6–+) 6...Bc3 (6...Ne7 7.de4 a6 8.Qh5 g6 9.Qh6+–) 7.Bc3 c6 (7...Bf5!? 8.Ne2 ed3 9.cd3 Ne7+/–) 8.de4 Nh6 (8...de4 9.Qh5 g6 10.Qh4+–) 9.Qh5 g6?? (9...Kf8+–) 10.Qh6 de4 (10...Kf7 11.Nf3 Nd7 12.0-0-0+–) 11.Qg7 cb5 (11...Rf8 12.Bb4 c5 13.Bc5 Qa5 14.Kd1 Qd8 15.Ke2 Bg4 16.f3 Nd7+–) 12.Qh8 1–0. Van Rooijen,Peter (2065) – Klein,Gabi (1725), ETC–S.11 remoteschach.de, 2005.

3.b5 g6 (---> 1.b4 g6 2.Bb2 f6 3.b5 e5).

3.c3 Nc6 4.e3 Bb4?? (better is 4...d5=) 5.cb4+– Nb4 6.Qc1 Ne7 7.a3 Nbd5 8.Nf3 f5? (8...d6 9.d4+/–) 9.Be2 (9.Be5 0-0+–) 9...f4? (9...d6!?+/–) 10.0-0 (10.e4!? Nf6 11.Be5 Nc6 12.Bf4 Ne4+–) 10...fe3 11.de3 Rf8? (11...d6 12.Rd1 Bd7 13.Qc2+–) 12.Nc3 (12.Be5 g6+–) 12...e4? (12...d6 13.Rd1 Be6 14.Nd5 Nd5 15.Be5 de5 16.e4+– (16.Ne5?! Qf6 17.f4 c6+/–)) 13.Nd5 (better is 13.Ne4 Nf5+–) 13...ef3 (13...Nd5 14.Nd2 Qe7 15.Qc4+–) 14.Bf3 (better is 14.Nc7 Kf7 15.Bd3 fg2+–) 14...Nd5 15.Rd1 (better is 15.Bd5 c6 16.Bg7 cd5 17.Bf8 Kf8 18.Qc5 Qe7 19.Qd5+–) 15...Ne3?? (better is 15...Rf3 16.gf3 Qg5 17.Kf1 d6+=) 16.Qe3+– (16.Qe3 Qe7 17.Qd3+–; 16.fe3?! d6+–) 1–0. Fournier,Frederic (2000) – shamat1, Active Blind, 2008.

3.c3 Bd6 4.e4 Ne7 5.Bc4 a6 6.Qg4 (6.Qb3 Rf8+=) 6...Ng6= 7.h4 (7.Bd5 Be7=) 7...b5 (7...Bb4!? 8.cb4 d5=+) 8.Bb3 (8.h5 bc4 9.hg6 h5 10.Rh5 Rh5 11.Qh5 Bf8+/–) 8...Bb7 (8...Bf8!?=) 9.h5+= Nf4 10.Qg7 Rf8 11.Bc2 Nc6 (11...Rf7 12.Qh8 Bf8 13.g3+/–) 12.Qh7 (12.g3 Ng2 13.Kf1 Bb4 14.Qh7+–) 12...Ng2+/– 13.Kf1 Nf4 14.h6 (14.Ne2 Rf7 15.Qh8 Rf8+/–) 14...Ne7 (14...f5 15.Ne2 Qg5 16.Nf4 Qf4 17.Qg6 Kd8 18.Qg3 Qg3 19.fg3 fe4 20.Ke2+/–) 15.Qg7 Neg6 16.h7 Qe7 17.Qh6 0-0-0 18.a4 Rh8 19.ab5 ab5 20.Na3?? Qf7?? 21.d3?? c6?? 22.Ne2+/– Bf8 23.Qh2 Kc7 24.Nf4+– Nf4 25.Bc1 Ne6 26.d4 d6 27.d5 cd5 28.Nb5 Kb6 29.Na7 d4 30.c4?? Nc7?? 31.Bd3 Ra8+= 32.c5?? dc5–+ 33.bc5 Bc5 34.f3 Ra7 35.Ra7 Ka7 36.Qd2? Kb8 37.Qa5 Qe7 38.f4?! f5 39.ef5 Bh1 40.fe5 Qe5 41.Ba3 Qf4 42.Ke1 Qe3 43.Be2 Ba3 0–1. pinecrest1981 – PrincipalFoe, Live Game Caissa's Web, 2004.

3.Bc3 d5 4.e3 Nh6 5.a3 Nd7 6.Nf3 a6 7.Be2 c5 8.bc5= Bc5 9.0-0 0-0 10.d4+= ed4 11.ed4 Bd6= 12.Bd2 Nf5 13.c4 dc4 14.Bc4 Kh8 15.Be6 Nb6= 16.d5 Be6 17.de6 Ne7 18.Qb3 Bc7 19.Bb4 Qd5 20.Qd5 Nbd5 21.Be7 Ne7 22.Re1 Ba5 23.Re2 Rac8 24.Nbd2 Rc2 25.Rd1 Rd8=+ 26.Kf1 g5 27.g4 Rc3 28.Re3 Re3 29.fe3 Nd5?? 30.Nc4+/– Bc7? 31.e4?? Ne7? 32.Re1?? Kg7 33.e5+= b5 34.ef6 Kf6 35.Ncd2 Bh2?? 36.Ne4+– Ke6 37.Nh2 h6 38.Ng5 Kd7 39.Ne6 Rc8 40.Nf3 Rc3 41.Nfd4 Ra3 42.Nc5 Kd6 43.Ne4 Kd5+/– 44.Nc2 Rf3 45.Nf2 Nc6+/– 46.Ne3 Kc5 47.Rc1 Kb6 48.Nd5 Kb7 49.Kg2 Ra3? 50.Re1 Nd4 51.Nb4 Ra4 52.Nfd3+– Ra3 53.Re7 Kc8?! 54.Nc5 a5 55.Nba6 Ra2 56.Kh3 Re2 57.Rf7 Ne6 58.Ne6 Re6 59.Nc5 Rc6+= 60.Rf5 a4= 61.Ne4 Rb6 62.Rc5 Kd7 63.Nc3 a3 64.Nb5 a2 65.Rc7 Ke8 66.Ra7 ½–½. Steve20 – jammboy, ChessWorld.net, 2006.

3.Bc3 Qe7 4.a3 (4.e4 Qf7=) 4...d5 5.d4 e4 6.e3 Qf7 7.Bb5 Bd7 8.Bd7 Nd7 9.Ne2 Bd6 10.0-0 Ne7 11.Nd2 0-0 12.Bb2 Nc6 (12...f5!?=+) 13.c4= dc4 (13...Qh5 14.Nf4 Qd1 15.Rad1 Bf4 16.ef4=) 14.Ne4 Qh5 Threatening mate... how? 15.Nd6 cd6 16.Rc1 f5? (better 16...b5=) 17.Rc4+- Rf6 (17...d5 18.Rc2+-) 18.d5 (18.Nf4 Qd1 19.Rd1 Nb6 20.Rc6 bc6+-) 18...Rh6 (18...Nce5 19.Rf4 g5+=) 19.dc6?? (better 19.h3 Nb6 20.Rc2+- (20.dc6?! Nc4 21.cb7 Rb8+=)) 19…Qh2 0-1. SieStein - sumusername (1705), lichess.org, 2020.

3.c4 d6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f6).

3.d3 d5 4.e3 (--> 3.e3 d5 4.d3).

3.d4 e4 4.a3 d5 5.e3 Be6 (---> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Be6 5.d4 e4).

3.e3 Nc6 4.d4 d6 5.f4 Bd7 6.d5 Nce7 7.fe5 fe5 8.e4 Ng6 9.Nf3 Nf6 10.Nc3 Ng4 11.Qd2 Be7 12.0-0-0 (12.Bc4!?=) 12...Nh4+= 13.Kb1 Nf3 14.gf3 Bg5 15.Qe2 Ne3 16.Re1 Nf1 17.Qf1 a6 18.Ne2 (18.Bc1 Bc1 19.Rc1 Rf8+=) 18...Rf8 19.Qg2 Qe7 20.Ref1 0-0-0 (20...a5 21.ba5 Ra5 22.Bc1 Bc1 23.Rc1–/+) 21.Rhg1 Be3 22.Qg7 Rf7 23.Qg3 Bg1 24.Qg1 Kb8 25.Bc1 Rg7 26.Qf2 Bh3 27.Rg1 Rg1 28.Qg1 Qf7 29.Qe3 Bd7 30.f4 ef4 31.Nf4 Re8 32.Qd4 Qe7 33.Nh5 Qe4 34.Qe4 Re4 35.Nf6 (35.Ka1 Re2 36.Kb2 Rh2–+) 35...Re7 (better is 35...Rb4 36.Bb2 Bf5–+) 36.Nd7 Rd7 37.Bf4 (37.Kb2 Re7–+) 37...b5 (37...Rf7 38.Bg3–+) 38.a3? (better is 38.Bh6–+) 38...Rf7 39.Bg3 Rf5 40.c4 (40.Kb2 Rd5 41.Bf2 Rd2–+) 0–1. Becker,Johnny – Ziegler,Ari (2315), SEM Ludweiler MBT/4, 1994.

3.e3 Qe7 4.a3 d5 (---> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Qe7).

3.e3 Ne7 4.d4 Ng6 5.de5 Ne5 (better is 5...Bb4 6.c3 Bc5=) 6.Be5+/– fe5 7.Qh5 g6?? (better is 7...Ke7 8.Qe5 Kf7 9.Bc4 Kg6+–) 8.Qe5 Be7 (8...Qe7 9.Qh8 Qb4 10.Nc3+–) 9.Qh8 Kf7 (9...Bf8 10.Nc3 c6 11.Bd3+–) 10.Qh7 Kf8 11.Qh6 Kg8 (11...Kf7 12.Nc3 Qf8 13.Bc4 Ke8 14.Qg6 Kd8 15.a3+–) 12.Qg6 Kh8 (12...Kf8 13.Qh6 Kg8+–) 13.Bd3 Bf6 14.Qh7 1–0. DEFFM – GuestQTQC, freechess.org, 2017.

3.e3 g5 (--> 1.b4 g5 2.Bb2 f6 3.e3 e5).

3.e3 g6 4.d4 d6 (4...Bb4!? 5.c3 Be7=+) 5.de5 de5 6.Bc4 (better 6.Qd8 Kd8 7.a3=) 6...Ne7?? (better 6...Qd1!? 7.Kd1 Bb4-/+) 7.Nd2 (better 7.Bf7! Kf7 8.Qd8+-) 7...Bd7 8.Qf3 Bg7 (better 8...Nf5!? 9.a3 Nd6=) 9.Be5!+- (9.Qb7 Bc6 10.Bb5 a6 11.Bc6 Nbc6-/+) 9...fe5?? (better 9...Bc6 10.e4 Nf5+-) 10.Qf7 Theme: Double Attack 1-0. aravind555 (1765) - Iordan85 (1750), lichess.org, 2020.

3.e3 h5 4.b5 c6 5.d4 cb5 (5...ed4 6.Bd4 cb5 7.Bd3+=) 6.Bb5 (6.de5!? fe5 7.Be5+- (worse 7.Bb5 Qa5 8.Nc3 Ba3=)) 6...Qa5= 7.Nc3 Bb4 8.Qd2 (8.Qd3 ed4 9.ed4 Ne7+=) 8...Bc3 9.Qc3 Qb5 10.Qc8 Kf7 11.Ba3?? (11.0-0-0 ed4 12.Bd4 b6+=) 11...ed4?? (better 11...Qa5 12.Kd1 Qa3 13.Qb7 Qc3-+) 12.Qf8+= Kg6 13.Qe8 (13.ed4 Kh7+=) 13...Kh7= 14.Qh5?? (better 14.Qe4 f5 15.Qd4=) 14...Nh6 (better 14...Qh5 15.Bc1 de3 16.Be3 Qa5 17.Kf1 Qc3-+) 15.Qb5+- ½-½. aravind555 – DaminSkakac, lichess.org, 2018.

3.e4 Na6 4.Bc4 Ne7 5.Qh5 g6 6.Qh4 Nb4 7.Qf6+/– Rg8?? 8.Qf7 1–0. Trkn – Gillian S, itsyourturn.com, 2000.

3.e4 c6 4.b5 d5 5.ed5 cd5 6.d4 e4 7.c4 Be6 (---> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c5 5.d4 cd4 6.ed4 e4 7.c4 Be6).

3.e4 Bd6 4.Bc4 (4.c3 Bf8=) 4...c6 (4...Bb4!? 5.Bg8 Rg8 6.Qh5 Kf8 7.Qh7 Ke7=) 5.a3+= Qb6 (5...Qe7 6.Nf3+=) 6.Qh5 (6.Bg8 Rg8 7.Qh5 Kf8 8.Qh7 a5+/–) 6...g6 7.Qh4 Be7 (7...Bf8 8.Nf3+/–) 8.f4 (better is 8.Bg8 Rg8 9.Qh7+–) 8...d6+= 9.f5! d5 (9...gf5 10.Qh5 Double attack (10.Qh5 Decoy)) 10.fg6+– (10.ed5?! Bf5 11.d3 a5+=) 10...f5? (10...h5 11.ed5 f5+–) 11.Qh5 (better is 11.Qh7 Rh7 12.gh7+–) 11...Nf6 (11...Kf8 12.Be5 Bf6 13.Bf6 Nf6 14.Qh6 Ke8+–) 12.g7 Nh5 13.gh8Q (13.gh8R?! Bf8 14.ed5 Nf4+/–) 13...Kd7 14.ed5 cd5 15.Bd5 Nf4 (15...Nf6 16.Bb3 Qc6 17.Nf3 Qe4 18.Kd1+–) 16.Qe5 Nd5 (16...Qd6 17.Bf3 Qe5 18.Be5+–) 17.Qd5 Ke8 18.Nf3 (better is 18.Qg8 Bf8+–) 18...Nc6 (18...Be6 19.Qe5+–) 19.b5 (better is 19.Qg8!? Kd7+–) 19...Nd8 20.Bd4 (20.Nd4 Bh4 21.Kd1 Qg6+–) 20...Qd6 (20...Qe6 21.Qe6 Ne6 22.Be5+–) 21.Qd6 (21.Qg8!? Bf8 22.Qh7 Be6+–) 21...Bd6 22.c4 Be6 23.d3 Nf7 24.Bf6 (24.Kf2 Kd7+–) 24...Kd7 25.Nbd2 Re8 26.Kf2 Bc5 (26...Nh6 27.h3+–) 27.d4 Bb6 28.c5 Bc7 29.Rhe1 Nh6 30.h3 Rg8 (30...Ng8 31.Be5 Ba5 32.Rec1+–) 31.Ng5 (better is 31.c6 bc6 32.bc6 Kc6 33.Re6 Kd5+–) 31...Bd5 32.Re7 Kd8 (32...Kc8 33.Rae1+–) 33.Rg7 (better is 33.Re5 Kc8 34.Rd5 a6+–) 33...Kc8 34.Re7 (better is 34.Rh7 Rg6 35.Be7 f4+–) 34...Bd8?? (34...Kd8 35.Re5 Kc8 36.Rd5 a6+–) 35.Re5 (better is 35.Rae1 Rg6 36.Rh7 Rf6+–) 35...Bf6 36.Rd5 Bg5 37.Nf3 Bf6 (37...Bf4 38.Ne5+–) 38.Re1 Rd8 39.Rd8 Kd8 40.Re6 Bg7 (40...Ng8 41.Kg3+–) 41.d5 1–0. Huelle,Gunter (1785) – Eichhorn,Mike, Leipzig VfB op, 2009.

3.e4 Ke7 4.Bc4+= Nh6 5.a3 d6 6.Nf3 Ke8 7.d4 Bd7 8.0-0 Ba4 (8...Nc6 9.Nbd2+-) 9.Qe2 (9.Nc3 Bc6+-) 9...f5? (9...ed4!? 10.Bd4 Bd7+-) 10.Rd1 (10.ef5 Nf5 11.de5 d5+-) 10...Be7 (10...fe4 11.Qe4 Bc6 12.Qe2+-) 11.Bb5 (better 11.ef5 Nf5 12.de5+-) 11...c6?? (11...Bb5 12.Qb5 Nd7 13.ef5 e4+-) 12.Ba4 b5 13.Bb3 d5 (13...fe4 14.Qe4 a5 15.a4+-) 14.ed5 cd5 (14...e4 15.Ne5 Bd6 16.dc6+-) 15.de5 (better 15.Qb5 Nd7 16.de5+-) 15...Rf8 (15...a6+-) 16.Bd5 Kd7 17.Ba8 (17.Qb5 Nc6 18.Qc6) 17...Ke6+- 18.Rd8 Rd8 19.Nc3 Ng4 20.Nb5 (better 20.Bd5 Rd5 21.Nd5+-) 20...h6 21.Qc4 Rd5 (21...Kd7 22.Rd1 Ke8 23.Qg8 Bf8 24.Nc7 Ke7 25.Qe6) 22.Nc7 (22.Qd5) 22...Kd7 (22...Kf7 23.Bd5 Kg6 24.Bg8 h5 25.Qf7 Kh6 26.Bc1 Ne3 27.Qe7 g5 28.Qg5) 23.Qd5 Kc7 (23...Bd6 24.Qd6 Kc8 25.Ne6 Ne5 26.Qc7) 24.Qb7 (24.Rd1 Nc6 25.Qc6 Kb8 26.Qb7) 24...Kd8 25.Rd1 Nd7 (25...Ke8 26.e6 Bd6 27.Qf7 Kd8 28.Rd6 Nd7 29.Qd7) 26.Qd7 1-0. Markzela (1800) - Chara_Jay, lichess.org, 2020.

3.e4 Be7 4.Bc4 Nh6 5.Qh5 Kf8 6.Ne2 Qe8 7.Qf3 Qg6? 8.a3 d6 9.Nbc3 Bg4 10.Qe3 Nd7 11.0-0-0 Be2 12.Qe2 c6 13.g3 b5 14.Be6 Ke8 15.f4 Nf8 16.Bb3 Kd7 17.d4 ef4 18.gf4 Ne6?? 19.Rhf1 Nc7 20.d5 Rae8?? 21.dc6 Kc6 22.Qf3 Kd7?? 23.Nd5 Nd5 24.Rd5 a6 25.e5 fe5+/– 26.fe5 Rhf8 27.Qh3 Ng4 28.Rfd1 Rc8?? 29.Rd6+– Bd6 30.Rd6 Qd6 31.ed6 h5 32.Bg7 Rf2 33.Qh5 Nh2 34.Qh7 Rf1 35.Kb2 Kd6 36.Qd3 Ke7 37.Qe4 Kd6 38.Be5 Ke7 39.Bh2 Kd7 40.Be6 Ke7 41.Bc8 Kf7+– 42.Qd5 Kf6 43.Be5 Kg6 44.Qe6 Kg5 45.Qg8 Kh4 46.Bf6! Kh5 47.Qg5 1–0. bratek55 (1690) – edaname, internet, 2011.

3.Be5 fe5 0–1. Kern,Michael – Zelinski,Paul, IECG.

3.f3 Bb4 4.c3 Bf8 5.e4 –/+.

3.f3 d5 4.Nh3 (better is 4.a3!?–/+) 4...Bh3 5.gh3 Bb4 6.c3 Be7 7.Qb3 b6 8.Rg1 g6 9.c4 Bc5 10.cd5?? (better is 10.e3 d4 11.e4–+) 10...Bg1–+ 11.Nc3 Bd4 (11...Nd7 12.Qc4–+) 12.Qb4 (12.e3 Bc3 13.dc3 Ne7–+) 12...Bc3 (12...Ne7!? 13.e3 Bc3 14.Qc3 Nd5 15.Bb5 c6 16.Bc6 Kf7 17.Bd5 Qd5 18.Qb3 Qb3 19.ab3–+) 13.Bc3 Qd5 14.e4 Qd6 (14...Qd7 15.f4 Nc6 16.Qb5–+) 15.h4 (15.Qd6 cd6 16.d4 Ne7–+) 15...Qb4 16.Bb4 c5 17.Bc3 Kd8 (17...Nc6 18.h5–+) 18.a4 a5 (18...Nc6 19.a5 ba5 20.Ba5 Na5 21.Ra5–+) 19.Rb1 Kc7 20.Bb5 (20.h5 Nc6–+) 20...Nc6 21.d3 Na7 22.Rb3 Nb5 23.ab5 a4 24.Ra3 Ne7 25.h3 Nc8 26.h5 Nd6 27.hg6 hg6 28.Bb2 Nb5 29.Kd1 Na3 30.Ba3 Rh3 31.Bc1 Rf3 32.d4 cd4 33.Bh6 a3 34.Bg7 a2 35.Bf6 a1Q 36.Ke2 Qf1 37.Kd2 Ra2# 0–1. legion420 – StillBill, Live Game Caissa's Web, 2004.

3.Nf3 Ne7 4.e3 Ng6 5.a3 d5 6.d3 Bd6 7.Nbd2 0-0 8.c4 dc4 9.Nc4 Be7 10.Be2 Be6 11.0-0 a6 12.d4 e4 13.Nfd2 f5 14.f3 Bg5 15.fe4 Bc4? 16.Nc4 fe4+/– 17.Rf8 Nf8? 18.Qb3?? Kh8?? 19.Ne5+– Qf6 20.Nf7 Kg8 21.Ng5 Kh8 22.Nf7 Kg8 23.Bc4 Nc6 24.Rf1 Qe7 25.d5 Nd8 26.d6 cd6 27.Nd8 Kh8 28.Nf7 Kg8 29.Nd6 Kh8 30.Rf7 (30.Rf7 Qg5 31.Rg7 Qg7 32.Qc3 Ne6 33.Be6 Qc3 34.Bc3; 30.Nf7 Qf7 31.Rf7 Ne6 32.Be6 Rg8 33.Bg7 Rg7 34.Rf8 Rg8 35.Rg8) 1–0. horacyad2010 – dobrodruh, internet, 2011.

3.f4 Bd6 4.fe5= Be5 5.Be5 fe5 6.a3 Qf6 (better is 6...d5+=) 7.Nf3?? (better is 7.e3=) 7...e4–+ 8.Nc3 ef3 9.ef3 d6 10.Be2 Ne7 11.0-0 0-0 12.d3?? (12.Bc4 Kh8 13.Qe2 Nbc6–+) 12...Qg6 (better is 12...Qc3 13.Ra2 Nbc6–+) 13.f4 Bh3 14.Bf3 Bg4?? (better is 14...Nbc6–+) 15.Bg4+/– h5 (better is 15...Nbc6!?+/–) 16.Bf3 Nf5?? (16...Nbc6 17.Nd5 Nd5 18.Bd5 Kh8 19.Bc6 bc6 20.Qf3+–) 17.Kh1 (17.Bb7 Nd7 18.Ba8 Ra8+–) 17...Nh4?? (better is 17...c6 18.Bh5 Qh6+/–) 18.Bh5 (better is 18.Bb7 Nd7 19.Qe1+–) 18…Qg2 0–1. Fournier,Frederic (1865) – tooc (1695), Active (1/0), 2004.

3.g3 d5 4.Bg2 Bb4 5.e3 d4 6.Ke2?? (6.ed4!? ed4 7.Qh5 Kf8 8.Ne2=) 6...Kf7 (better 6...de3 7.de3 Qd1 8.Kd1 Nc6-+) 7.Kf3?? (better 7.c3 d3 8.Kf1=+) 7...f5 (better 7...Nh6 8.Bh3 Nc6-+) 8.c3?? (8.Ke2 Nf6-+) 8...Nf6 (better 8...d3 9.g4 Qg5-+) 9.Qb3? (better 9.Ke2 d3 10.Kf1-+) 9...Be6 10.c4 e4 (better 10...Qd6 11.Ke2 Nc6-+) 11.Kf4 (11.Ke2 Nc6 12.Nh3-+) 11...Qd6 (11...Nh5 12.Ke5 Nc6) 12.Kg5 h6 13.Kh4 g5 14.Kh3 f4 15.g4 Bg4 0-1. ShrayanM - Lance5500 (2415), lichess.org, 2016.

4.c3 c5 5.e3 Nc7 (5...d5 6.Bb5 Kf7 7.Ba6 ba6 8.d4 ed4 9.ed4 cd4 10.cd4=) 6.Nf3 (6.bc5 d6+=) 6...Ne6 (6...e4 7.Nh4 d5 8.Qh5 Kd7+–) 7.d4+= Qc7 (7...ed4 8.ed4 cb4 9.ab4+=) 8.d5 (8.bc5 d6+/–) 8...Ng5 (8...Nd8 9.Nbd2+=) 9.Nbd2 (9.Ng5 fg5 10.Qh5 g6 11.Qg5+/–) 9...e4? (better is 9...Nf3 10.Qf3 Ne7+=) 10.Ng5+– fg5 11.Qh5 g6 12.Qe2 Bg7 13.Ne4 Nf6 14.Nc5 b6 15.Nb3 0-0 (15...Nd5 16.c4 Nf6 17.c5+–) 16.c4 a5 17.b5 a4 18.Nc1 (18.Nd4 g4+–) 18...d6 19.f4?? (better is 19.f3+–) 19...Bg4 (19...gf4 20.Ra2=+ (20.ef4?? Re8 21.Be5 de5–+)) 20.Qf2 Ne4 21.Qc2 Rae8 (21...Bb2 22.Qb2 gf4 23.ef4 Rae8=+) 22.h3 (22.Be2 Bb2 23.Qb2 Be2 24.Ne2 (24.Qe2 Qg7 25.Qa2 Qc3 26.Ke2 Nf2–+) 24...gf4 25.0-0 (25.Nf4 Rf4 26.g3 Ng3 27.hg3 Re3 28.Kd1 Rd3 29.Ke1 Qe7 30.Qe2 Re4–+) 25...fe3 26.Rf8 Rf8 27.Qc2–/+) 22...Bb2 23.Qb2 Ng3 24.hg4 Nh1 25.fg5 Re3 26.Be2 (better is 26.Kd2 Qe7 27.Be2–+) 26...Rf1?? (better is 26...Qc4! 27.Qb4 Qd5–+) 27.Kd2?? (27…Rc1 28.Rc1+= (< 28.Qc1 Qe7–/+; 28.Kc1? Ng3–+); better is 27.Kf1 Ng3 28.Kf2+–) 1–0. garyp – MATRIXX2, Live Game Caissa's Web, 2004.

4.c3 d5 5.e3 =.

4.e4 c5 5.b5 Nc7 6.c4 a6 7.ba6 Ra6 8.d3 b6 9.Nc3 Bb7 10.Be2 Nh6 11.h3 Ne6 12.Nd5 Bd5 13.cd5 Nd4 14.Nf3 b5 15.Nd4 cd4 16.0-0 Bc5 17.f4 0-0 18.Qb3 Rb6 19.fe5 fe5 20.Rf8 Qf8 21.Rf1 Qe7 22.d6 Qf7?? (better is 22...Qe6 23.Qe6 de6+/–) 23.Rf7+– Nf7 24.Bg4 Rb7 (24...b4 25.Qc4 Bd6 26.Bd7 Bf8+–) 25.Qd5 Ra7 26.Qc5 Ra6 27.Qc8 1–0. Fournier,Frederic (1785) – jr.com, rated blitz game (2/12), 2002.

4.e4 d5 +=.

4.e3 b6 5.Bc4 (5.Qh5 Ke7+/–) 5...Nh6? (better is 5...d5 6.Bb3 Ne7+=) 6.Qh5 Ke7 7.Nc3 (better is 7.h4 d5 8.hg5+–) 7...Qe8?? (better is 7...c6+=) 8.Nd5+– Kd8 9.Qe8 Ke8 10.Nc7 (10.Nc7 Kd8 11.Na8+–) 1–0. Wall,Bill – SpaceCowboy, internet, 2000.

4.e3 Nh6 5.d4 Bg7 6.Qh5 Nf7 7.de5 +/–.

4.e4 Ne7!? +=.

4.e4 h6 5.Qh5+/– Ke7 6.Bc4 d6?? (better is 6...Qe8 7.Qf3 d6+/–) 7.Qf7 1–0. Wall,Bill – MeatLover, Internet, 2002.

4.b5 Ba3 5.Na3 Qe7 (5...Nd4 6.e3 Ne6 7.Qh5 g6 8.Qe2=) 6.Nb1 Nd4 7.e3 Nf5 8.Nc3 c6 (8...d6 9.Nd5 Qd8 10.Bc4=) 9.e4 Nd4 10.Nf3 d6 11.bc6 bc6 12.Bc4 (12.Rb1 Bg4=) 12...Bg4=+ 13.Be2 Be6 (13...Ne2 14.Qe2 Rb8 15.0-0=) 14.Nd4 (14.Rb1 Nf3 15.Bf3 Nh6=) 14...ed4 15.Nb1 d5 (15...Bf7 16.f3=+) 16.ed5= Bd5 17.0-0 Qb4 (17...Qe4 18.Bf3 Qf5 19.Bd5 Qd5 20.Re1 Kf7 21.Qe2+=) 18.Bf3 Ne7 19.Bd5 Nd5 20.Re1 (20.Qg4 Kf8 21.Re1 Qb2–+) 20...Kf7 (20...Kd8 21.a3 Qb2 22.c4–/+) 21.Qh5 g6 22.Qh3 f5 23.Qd3 Rae8 24.Na3 Re4 25.Nc4 Rhe8 26.Re4 Re4 27.f3 Nf4=+ 28.Qb3 Qb3 29.cb3 Re2–/+ 30.g3 Nh3 unclear. Hecker,K – Kurth,M, corr TT/5001 BdF, 1995.

4.e4 Bb4 5.Bb5 Ba3 6.Na3 a6 7.Bc6 dc6 8.Nf3 Bg4 9.h3 Bf3 10.gf3 Ne7–/+ 11.d4 ed4 12.0-0 0-0 13.Kh1? Qd6 14.Nc4? Qf4 15.Rb1 Qh4 16.Kh2 Rad8 17.Rb7 Ng6 18.Rg1 Qf2 19.Rg2 Qh4 20.Rc7?? Nf4 21.Rgg7+/– Kh8 22.Rh7 Qh7 23.Rh7 Kh7 24.Qb1?? Rb8?? 25.Qg1?? Rg8–/+ 26.Qf1 Rg2–+ 27.Kh1? Rbg8 28.Qc1 Ne2 29.Qf1 Rg1 30.Qg1 Ng1 31.Na5 c5 32.Nb7 c4 33.Nd6 d3 34.cd3 cd3 35.Nc4 Nf3 36.a3 Rc8 37.Kg2–+ Rc4 38.Kf3 d2 39.Ke2 Rd4 40.Kd1 Re4 41.Kd2 f5 42.Kd3 Re8 43.Kc4 f4 44.Kb4 f3 45.Ka5 Ra8 46.Kb6 a5 47.a4 f2 48.Kb7 Re8 49.Kb6 Re5 50.h4 f1Q 51.h5 Qf6 52.Kb7 Re7 53.Kc8 Qf8 0–1. Seimi Agus Eion – crystal palace, ChessWorld.net, 2005.

(--> 1.b4 e5 2.Bb2 f6 3.b5 d5).

4.e3 Bd6 5.d4 e4 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.d4 e4 5.e3 Bd6).

4.c5 Nc6 5.e3 Nb4–/+ 6.a3 Nc6 7.Qc2 a6 8.Nf3 e4 9.Nh4? Bg4?? 10.h3 Bh5 11.g4 Bf7–/+ 12.f3 ef3 13.d4 g5 14.Nf3 b6 15.cb6= Qd7 16.Bd3 cb6=+ 17.h4 Be6 18.Nbd2 Bg4 19.Nh2 Bh5 20.Nb3 Nge7 21.Bh7? Kd8 22.hg5 fg5 23.Rg1 Rh7?? 24.Qh7=+ Bg6 25.Qh8+/– Kc7 26.Rg5 a5 27.Qf6 a4 28.Nd2 Bh6 29.Rg6+– Rf8?! 30.Qf8 Bf8= 31.Rf6 Bg7 32.Rf2 Ng6 33.0-0-0 Na5 34.Rg1+/– Nb3? 35.Kb1?? Nh4 36.Ng4 Nf5 37.Nf3 Ne7?? 38.Rh1?? Qg4–+ 39.Rg1 Qe4 40.Ka2 Qe3 41.Rgf1 Nc6 42.Nh4 Ncd4 43.Rf7 Kc6 44.Rg7 Qh3 45.Bd4?? Qf1 46.Ra7 Qf4 47.Ra4 Nd4 48.Ng6 Qd2 49.Kb1 Qc2 50.Ka1 Qa4 51.Kb2 Qb5 52.Kc3 Qc4 53.Kd2 Qe2 54.Kc3 Qc4 55.Kd2 Nb3 56.Ke3 Qd4 57.Kf3 Qd3 58.Kf2 d4 59.Ne5 Kb5 60.Nd3 Ka4 61.Nf4? Ka3 62.Ke2 b5 63.Nd5 b4 64.Kd3 Ka4 65.Kc4 Na5 66.Kd4 b3 67.Kc3 Ka3 68.Kd3 b2 69.Kc2 Nc4 70.Nc3= Ne3 71.Kb1 Kb3 72.Ne4 ½–½. Pekin Dragons – wee harv, ChessWorld.net, 2011.

4.cd5 Bb4 5.Qa4 Bd7 6.Qb4 c6 7.dc6 Bc6 8.Ba3 Ne7 9.Nc3 0-0 10.Qe7 Qe7 11.Be7 Re8 12.Ba3 Nd7 13.Nf3 b6 14.g3 e4 15.Nd4 Bb7 16.Bg2 Rac8 17.0-0 Nc5 18.Ndb5 Re6 19.Na7 Ra8 20.Nab5 Rc8 21.Bc5 Rc5 22.a4 Rc8 23.Rac1 Rc5 24.Nd4 Ba6 25.Ne6 Rc3 26.Rc3 1–0. chessleon – bumeyou (2205), net–chess.com, 2006.

4.cd5 Qd5 5.Nc3 Qd8 6.e3 Bb4–/+ 7.Bb5 c6 8.Bc4 Bc3 9.Bc3 Ne7 10.Nf3 b5 11.Bb3 Bg4 12.0-0 a5 13.d4 a4 14.Bc2 Bf3 15.Qf3= Qd5 16.e4 (16.e4 Qe6 17.Rfd1=). yannigator (1920) – mduerr (1830), net–chess.com, 2010.

4.cd5 Qd5 5.Nf3 Bb4-/+ 6.e3 Bf5 (6...Nc6 7.a3 Ba5 8.Qa4-/+) 7.Nc3 Bc3 8.Bc3 Bd3 (8...Bg4 9.Qa4 Qd7 10.Qb4=+) 9.Bd3=+ Qd3 10.Qe2 (10.Qb1 Qb1 11.Rb1 b6=+) 10...Qe2-/+ 11.Ke2 Ne7 12.Rhc1 0-0 (12...Nbc6 13.d4 ed4 14.Nd4 Nd4 15.Bd4-/+) 13.Kf1 (better 13.Bb4!? Rf7 14.Rc7+=) 13...Nbc6 14.d3 a6 15.e4 (15.Rab1 Rab8-/+) 15...Rad8 16.Bb4?? (better 16.Rd1-/+) 16...Rd3 (better 16...Nb4 17.Rc7 Nec6 18.Rb7 Nd3-+) 17.Be7= Ne7 18.Rc7 b5?? (better 18...Kf7 19.Rb7 Rc8=) 19.Re7+- Rfd8 (better 19...Rc8+-) 20.h3 (20.Rc7 Ra3+-) 20...Kf8? (better 20...Rd1 21.Rd1 Rd1 22.Ke2 Ra1+-) 21.Re1?? (better 21.Ra7 Ra3 22.Rc1 Ra2 23.Rcc7+-) 21...Ke7-+ 22.Ke2 Rd2 (better 22...Rc3 23.Ra1-+) 23.Kf1?? (better 23.Nd2 Rc8 24.Rb1+-) 23...Ra2-+ 24.Rc1 Rd7 25.Rc8 (25.h4 b4-+) 25...b4 (better 25...Rd1 26.Ne1 Raa1 27.f3 Re1 28.Kf2-+) 26.Rh8 (26.Rc1 a5-+) 26...b3 (better 26...Rd1 27.Ne1 b3-+) 27.Rh7 (27.g3 b2 28.Rb8 Rd1 29.Kg2 b1Q 30.Rb1 Rb1-+) 27...Kf7 (better 27...b2 28.Kg1 b1Q 29.Kh2-+) 28.Rh8 b2 29.Rb8 Ra1 (better 29...Rd1 30.Ne1-+) 30.Ke2 b1Q 31.Rb1 Rb1 32.Ke3 a5 33.Ne5 fe5 34.Kf3 a4 35.g3 a3 36.Kg2 a2 37.g4 a1Q 38.Kh2 (38.h4 Rg1 39.Kh2 Qf1 40.f4 Rd2) 38...Qd4 (38...Rh1 39.Kg3 Qg1 40.Kh4 Kg6 41.f4 Qf2) 39.Kg3 (39.Kg2 Qe4 40.Kg3 Rg1 41.Kh4 Kf6 42.Kh5 Qh7) 39...Qe4 (39...Rg1 40.Kh4 Kg6 41.f4 Qf2) 40.Kh4 Rb2 41.Kg3 (41.Kg5 Qf4 42.Kh4 Rd8 43.Kh5 Rh8) 41...Rf2! 42.Kh4 (42.Kf2 Deflection from f4 42...Qf4) 42...Rd3 43.Kh5 (43.Kg5 Qe3 44.Kh4 Qh6) 43...Rh3 44.Kg5 Rf4 (44...Qe3) ½-½. Markzela (1665) - vespar (1695), lichess.org, 2020.

4.c3 Ba5 5.e4 Ne7 6.Nd2 d6 (6...d5 7.de5 fe5 8.Qh5 Ng6 9.ed5 Qd5 10.Ngf3+=) 7.Qh5 (7.Nc4 Nbc6+=) 7...g6 8.Qf3 ed4 9.Ne2 (better is 9.Qf6 Rf8 10.Qd4=) 9...dc3–/+ 10.Nc3 Nd7 11.Nb3 (11.Bc4 Bc3 12.Bc3 Nc6–/+) 11...Bb6 12.Na4 (12.Bb5 c6 13.Bc4 f5–/+) 12...Ne5 (12...Nc6 13.Nb6 ab6 14.Bc4–/+) 13.Qc3 (13.Qf6 Rf8 14.Be5 Rf6 (worse is 14...de5 15.Qh4 Bf2 16.Qf2 Rf2 17.Kf2–+) 15.Bf6 Be6–+) 13...Be6 14.Nb6 ab6 15.Bb5 c6 16.Bd3 0-0 17.Bc2 (17.0-0 Nd3 18.Qd3 c5–/+) 17...Nc4–+ 18.Bc1 (18.Nd4 Qd7–+ (18...Nb2 19.Ne6 Na4 20.Ba4+–)) 18...d5 (18...f5 19.Nd4 Qd7 20.ef5 Nf5 21.Bf5 gf5 22.0-0–+) 19.0-0 Qd6 (19...c5 20.ed5 Qd5 21.Rd1–+) 20.Bh6 (20.ed5 Qd5 21.Re1 Rad8–/+) 20...Rf7 21.ed5 Bd5 22.Qh3 (22.Rfd1 Qe6–/+) 22...Ne5 (22...Qe6 23.Qg3–+) 23.f4 (23.Rfd1 Qe6 24.Qe3 Ng4 25.Qe6 Be6–+) 23...Nc4–+ 24.Rf2 (24.Rfd1 Qe6 25.Qh4 Bg2+=) 24...Qb4 (24...Ra3 25.f5–+) 25.f5–/+ g5 (25...Ra3 26.fg6 hg6 27.Qh4 Ra2 28.Rb1–+) 26.Re2 Ne5 27.a3 (27.Re3 Qg4–+) 27...Ra3–+ 28.Ra3 Qa3 29.Re1 (29.Re3 Qd6–+) 29...Qb2 30.Ra1 Do you see the mate threat? 30...Kh8 (30...Kh8 31.Ra8 Ng8–+) 0–1. Hecker,K – Hueser,U, corr TT001 BdF, 1995.

4.c3 Ba5 5.de5 fe5 6.e3 Nf6 7.Bc4 c6 8.Ne2 d5 9.Bb3 0-0 10.Ng3 (10.0-0 b5-+) 10...h6 (10...Ng4 11.0-0 Bb6 12.Qe1-+) 11.e4 Kh8 (11...Na6 12.Ba3 Rf7 13.0-0-+) 12.ed5 (12.Ba3 Rf7-/+) 12...cd5-+ 13.0-0 e4 (13...Nc6!?-+) 14.c4-/+ Be6 (better 14...dc4 15.Bc4 Nc6-/+) 15.cd5+= Bd5? (15...Nd5 16.Qh5 Nf6 17.Bf6 Qf6 18.Qa5 Qa1+-) 16.Bf6+- Rf6? (better 16...Qf6 17.Bd5 Qa1 18.Bb7 Nc6 19.Bc6 Rab8 20.Be4 Qa2+-) 17.Qd5 Qd5 18.Bd5 Nc6 19.Be4 (19.Ne4 Rf5 20.Nbc3 Re5+-) 19...Raf8 20.Bf3 (20.a3 Re8+-) 20...Bb6 (20...Nd4 21.Bd1+- (21.Bb7?! Nc2+-)) 21.Ne4 (21.Nd2 Ne5+-) 21...Rg6 22.Nbd2 Nd4 23.Rab1?? (better 23.Ng3 Rd8 24.Rab1+- (worse 24.Bb7 Rg3 25.hg3 Ne2 26.Kh2 Rd2+-)) 23...Nf3= 24.Nf3 Rf3 25.Rfc1 Ra3 26.Rb2 Rg4 (26...Re6 27.Re2=) 27.Nd6 (27.Re1 Rd3 28.Rbe2 Rf4=) 27...Rf4 (27...Rga4 28.Nc4 (worse 28.Nb7 Ra2 29.Ra2 Ra2-+) 28...Bd4 29.Rb7 Ra2 30.Ne3-/+) 28.Rbc2 (28.Nc4 Bd4 29.Rbc2 Ra6=) 28...Rd3 (28...Rfa4 29.Kf1=) 29.Nc4 Rfd4 Threatening mate: Rd1 30.Nb6?? (better 30.Kf1=) 30…Rd1 (30...Rd1 31.Rd1 Rd1) 0-1. aravind555 - greg511, lichess.org, 2018.

4.c3 Ba5 5.de5 fe5 6.e4 Nf6 7.Bc4 c6 8.Nf3 d5 9.ed5 cd5 10.Bb5 Bd7 11.Bd7 Nbd7 12.0-0 0-0 13.Re1 Qc7 14.Qb3 e4 15.Ng5 Nc5 16.Qc2 Ng4 17.Nd2 Qh2 18.Kf1 Rf2# 0–1. Administrator – GNUChess, 2000.

4.c3 Bd6 5.de5 Be5 6.Nf3 Nc6 7.Ne5 (7.e4 Qe7-/+) 7...Ne5 (7...fe5 8.e4-/+) 8.e3 Ne7 9.c4 N7g6 (9...d6 10.Be2-/+) 10.Be2 0-0 11.0-0 (11.c5 Re8=+) 11...d6-/+ 12.Nd2 b6 13.Qb3 Bb7 (13...Qe7 14.f4 Nd7 15.c5 Kh8 16.cd6 cd6 17.Qd3-/+) 14.c5=+ d5 (14...Kh8 15.cd6 Qd6 16.Rfd1=+) 15.e4 (15.Rac1 Re8=+) 15...c6 (15...Bc6 16.f4 Nf7 17.Qc2 de4 18.Ne4 Be4 19.Qe4-/+) 16.cb6 (16.Rfe1 Nf4 17.ed5 cd5=+) 16...ab6 (16...Nf4 17.Rfe1 Qb6 18.ed5 cd5 19.Rab1-/+) 17.ed5 Qd5 18.Be5 (18.Bc4 Nc4 19.Nc4 b5=+) 18...Qb3-/+ (18...fe5?? 19.Bc4+-) 19.Nb3 (19.ab3 Ne5 20.f4 Ng6=+) 19...Ne5 20.Rfd1 (20.f4 Nf7-/+) 20…Rad8 (20...Rad8 21.a4 Rfe8-/+; 20...Ra4!? 21.Rab1-+) 0-1. aravind555 – salehssi, lichess.org, 2018.

4.c3 Be7 5.e4 d5 6.ed5 Qd5 7.Nd2 ed4 8.cd4 c6 9.Ngf3 Bb4 10.a3 Bd2 11.Qd2 Ne7 12.Be2 0-0 13.0-0 Re8 14.Rac1 Qf7 15.Rfe1 Be6 16.Bd3 Ng6 17.h4 Nd7 18.h5 Ne7 19.Qc2 Nf8 20.h6 gh6 21.a4 Bd5 22.Re3 Neg6 23.Nh2 Nf4 24.Ng4 Qg7 25.Rg3 N8g6 26.Bf1 Kh8 (26...Nh5 27.Rh3 Ngf4 28.Rh4–+) 27.Ne3–/+ Be4 28.Qd2 Rad8 29.Re1 Nh5 30.Rh3 Ngf4 31.Rh4 Bf3 32.Rh2 Qg5 33.Qc3 Re6 34.Bc4 Re7 35.Ba3 Red7 36.Bf1 Be4 37.Nc4 Qg6 38.Qe3 Bd3 (38...Rd4?! 39.Nd6 Bg2 40.Bg2 R8d6 41.Bd6 Rd6 42.Qe7=) 39.Na5 Rg8 40.g3 Bf1 41.Kf1 Nd3 42.Rd1 Nf2! 43.Kf2 (43.Qf2 Ng3 Combination; 43.Kf2 Qf5 Double attack (43...Qg3 Deflection); 43.Rf2 Ng3 Combination) 43...Ng3 44.Rc1 Qf5 45.Qf3 Qa5 46.Qf6 Rdg7 47.Ke3 Re8 48.Kd3 Qa4 49.Be7 Qa6 50.Rc4 Ne4 (50...Ree7?! 51.Qf8 Rg8 52.Qe7–/+) 51.Rhc2 Nf6 (51...Ree7?! 52.Qf8 Rg8 53.Qe7=) 52.Bf6 Qb5 53.Bg7 Kg7 54.Rg2 Kh8 55.Rgc2 Qd5 56.Rc5 Qf3 57.Kc4 Qa3 58.Rc3 Qa2 59.Kb4 Qb2 60.Rb3 Qd4 61.Rc4 (61.Ka3 Qc5 62.Ka2 Re2 63.Rb2 Qc4 64.Ka1 Qa4 65.Kb1 Re1) 61...a5! 62.Ka4 (62.Ka5 Re5 Mate attack) 62...Qc4 63.Ka3 Re2 0–1. eliminator_2000 (2000) – nordlicht (1985), gameknot.com, 2012.

4.c3 Be7 5.de5 fe5 6.Nf3 Nc6 (6...e4 7.Nfd2-/+) 7.e4 d6 (7...Nf6 8.Nbd2-/+) 8.Bc4 Na5?? (better 8...Bg4-/+) 9.Bg8+- Rg8 10.0-0?? (better 10.Qd5 Rf8 11.Qa5+-) 10...Be6 11.Nbd2 (11.Nd4 Bf7 12.Nf5 Bg5-/+) 11...Qd7 (11...Nc6 12.Ne1-/+) 12.Nb3 (12.Nd4 Bf7 13.Nf5 0-0-0-/+) 12...Nc6 13.Qe2 g5 14.Rfd1 g4 15.Ne1 b6 16.Qa6 Na5 (better 16...h5-/+) 17.Nd3?? (better 17.Na5 Qa4 18.Qb7-/+) 17...Bc4-+ (17...Nb3?! 18.ab3 Qc6 19.Nb4 Qe4 20.Re1-+; 17...Bb3?! 18.ab3 Qc8 19.Qb5 Kf8 20.Bc1=+) 18.Na5 (18.Ne5 de5 19.Rd7 Kd7 20.Qa5 ba5 21.Na5-+) 18...Ba6 19.Ne5 (19.Nb3 c5 20.Ne5 Qa4-+) 19...Qb5 20.Nb3 (20.Nac6 Qb2 21.Rab1 Qa3 22.Ne7 Ke7 23.Nc6 Kd7-+) 20...Qe5 21.Rd2 (21.Nd4 Rg6 22.Nf5 Qe4 23.Ne7 Qe7-+) 21...Qe4 22.Nd4 0-0-0 (22...0-0-0 23.Nc2 Bg5-+) 0-1. malachi76 (2065) - amayak (2140), Rated Blitz game, lichess.org, 2014.

4.Bc3 Bc3 5.Nc3 d6 6.e3 Be6 7.Bd3 Ne7 8.Rb1 b6 9.Bb5 c6 10.Bd3 0-0 11.Qh5 h6 12.a4 Bf7 13.Qg4 Qe8 14.Nh3? Nd5 15.Nd5 Bd5 16.Bg6 Bf7 17.Bf5 Bh5 18.Qe4? g6–+ 19.Be6 Qe6 20.f3 f5 21.Qh4 Qc4 22.g4 fg4 23.fg4 Qc2 24.Rd1 Rf3 25.Qd8 Kf7 26.Rd2 Re3 27.Kf2 Qd2 (28.Kg1 Re1; 27...Rh3 28.Qc7 (28.Rc2?! Bg4 29.Qc7 Nd7=) 28...Ke6 29.Rc2 ed4 30.gh5 Rh5 31.Re1 Re5 32.Qb7+–) 0–1. IkkeIkke97 – sargo, playchess.de, 2003.

4.Bc3 Bc3 5.Nc3 ed4 6.Qd4 Nc6 7.Qd5 d6 8.e3 Qe7 (8...f5 9.Nf3-/+) 9.Bc4 (9.Bb5 Bd7=+) 9...Be6?? (better 9...Ne5-/+) 10.Qe6+- (10.Qe6 Qe6 11.Be6+-) 1-0. aravind555 – FIDeuce, lichess.org, 2018.

4.Nc3 d6 5.de5 fe5 6.e4 Nf6 7.Bd3 0-0 8.a3 Ba5 9.Nf3 Bg4 10.h3 Bh5 11.g4 Bg6 12.Nh4? Be4 13.Be4 Ne4 14.Qd5 Kh8 15.Qa5 Nc3 16.Bc3 Qh4 17.Rh2 Na6 18.Rb1 Nc5 19.Qc7 Ne4 20.Qc4 Nf2 21.Kd2 Rac8 22.Qe2 Qg3 (22...Qg3 23.Kc1 Rc3–+) 0–1. alwayslosing (1945) – macedon (2065), net–chess.com, 2008.

4.Qd4 Nc6=+ 5.Qe4 Qe7 6.Qe7 Be7 7.e3 Bb4 8.c3 Bc5 9.Ne2 d6 10.Nd4 Nge7 11.Ne6?? Be6–+ 12.c4 Ne5 13.Nc3 Bc4 14.Bc4 Nc4 15.0-0 Nb2 16.Rab1 Ba3 17.Nb5 0-0 18.Na3 Nd3 19.Rfd1 Nc5 20.Nb5 Rfc8 21.a4 a6 22.a5 ab5 23.Rb5 c6 24.Rb7 Nb7 25.a6 Ra6 26.Ra1 Rca8 27.Kh1 c5 28.f4 c4 29.e4 c3 30.e5 de5 31.fe5 f5 32.e6 c2 33.Rb1 g6 (33...g6 34.Re1 Ra1 35.Kg1 Re1 36.Kf2 c1Q 37.Kg3 Ra3 38.Kh4 Qh6#; 33...cb1Q#) 0–1. KingMoses – stingo (1660), caissa.com, 2007.

4.Bd4 Bb4 5.c3 Be7 6.Nf3 Nc6 7.e4 d6 8.Bc4 Bg4 9.0-0 Qd7 10.h3 Bh5 11.Qa4 Nd4 12.Qb4 Ne2 13.Be2 0-0-0 14.Nbd2 Bf3 15.Bf3 Qc6 16.Nc4 Kb8 17.Na5 Qc5 18.Qa4 d5 19.Rab1 Qc3 20.Nb7 Rc8 21.Rfc1 Qe5 22.Be2 Ka8 23.Rb5 c6 24.Ra5 Kb7 25.Ra7 Kb6 26.Qa5 1–0. arthur75 – pulaster, gameknot.com, 2012.

4.a3 a5 5.ba5 Ra5 (worse is 5...ba5 6.Be5 Nc6 7.Bc3+/–) 6.Nc3 c6 7.Nf3 (7.d4 ed4 8.ed4 d5=) 7...d5+= 8.d3 Be6 9.Be2 g6 10.0-0 Bg7 11.Qd2 g5 12.h3 h5 13.Nh2 Ne7 14.Qd1 Bf7 15.Bf3 (15.d4!?+=) 15...f5–/+ 16.Ne2? (16.d4 g4 17.Be2 gh3 18.gh3 Ng6 19.de5 Ne5–/+) 16...Qd7 (16...g4 17.hg4 hg4 18.Ng4–+) 17.c4? (better is 17.Nc1–/+) 17...g4–+ 18.hg4 (18.Bc3 Ra8 (18...gf3?! 19.Nf3 dc4 20.Ba5 ba5 21.Rb1–/+) 19.Ng3 gf3 20.Nf3 Qd6–+) 18...hg4 (18...dc4?! 19.gf5 cd3 20.Nf4 Qf5 21.Nd3+=) 19.cd5 gf3 20.Nf3 cd5 (better is 20...Rd5!? 21.Nf4 Qd6 22.Ng5 ef4 23.Bg7–+) 21.Be5 Be5 22.Ne5 Qd6 23.d4 Qh6 24.f4 Ng6 (24...Bh5 25.Kf2 Be2 26.Qe2 Qh4 27.Kg1–+) 25.Ng6 Bg6 26.Kf2 Qh4 27.Ng3 Nd7 28.Rh1 Qh1?? (better is 28...Qf6–/+) 29.Nh1+– 1–0. Fournier,Frederic – telegin1, Active, 2012.

4.c4 Ne7 (4...Bb4!? 5.a3 Ba5-/+) 5.b5 (5.Qh5 Ng6 6.Bd3 Bb7 7.Bg6 hg6 8.Qg6 Ke7+=) 5...Ng6 (5...Bb7 6.Nf3=) 6.a4 (6.Qh5 Bb7=) 6...c6 (6...Bb7 7.Nf3=) 7.Nf3 cb5 (7...a6 8.d4=) 8.ab5+= d6 (8...Bb7 9.d4+=) 9.Be2 Bb7 10.0-0 Nd7 (10...a6 11.ba6 Na6 12.d4+-) 11.Nc3 Be7 12.h3 (12.Qc2 Qc7+-) 12...0-0 13.Qb3 White fights for the Initiative 13...Kh8 14.d4 e4 (14...f5 15.Ra2+-) 15.Nd2 f5 16.d5 (16.Ra2 Nf6+-) 16...Nf6 (16...Nc5 17.Qc2+=) 17.f3+- ef3 18.Nf3 (18.gf3?! f4 19.Nce4 Bc8=) 18...Ne4 (18...Nd7!?+-) 19.Ne4+- fe4 20.Nd4 Qd7? (20...Rf1 21.Rf1 (worse 21.Kf1 Bf6+-; worse 21.Bf1 Bf6+-) 21...Bf6 22.Ne6+-) 21.Nc6?? (better 21.Bg4 Rf1 22.Rf1+-) 21...Rf1 22.Kf1 (22.Rf1 Bg5+-) 22...Rf8 23.Kg1 Bf6 (23...Bc6!? 24.dc6 Qc7+-) 24.Ra7 Bb2 (24...Qf7 25.Kh2 Nh4 26.Bg4+-) 25.Qb2 Qf7 26.Bg4?? (better 26.Kh2+-) 26...Qf1+= 27.Kh2 h5?? (27...Rf2 28.Qf2 Qf2 29.Rb7 h5-+) 28.Rb7+- hg4 (28...Rf6 29.Bh5 Nf4+-) 29.Qg7 1-0. RichardSommer (1965) - MysteriousLabyrinth (1880), lichess.org, 2020.

4.Qh5 g6 5.Qh4 Nc6 (5...d5 6.Nf3 Be7 7.Nc3=) 6.b5 Nb4 7.Bd3 (7.Kd1 Bb7 8.e4+/–) 7...d6?? (better is 7...Nd3 8.cd3 Bb7+=) 8.Bg6 (better is 8.Qb4 Bb7 9.f3+–) 8...hg6 9.Qh8 (9.Qb4?! a6=) 9...Bf5 (9...Be6 10.Na3+/–) 10.d3 (10.Qg8 Nc2 11.Kd1 Na1+–) 10...Nc2 (10...Be6 11.Kd2+–) 11.Kd2 Na1 12.Qg8 (12.Ba1 Be6–/+) 12...Qe7 (12...Qc8+–) 13.e4 (better is 13.Qd5 Rc8 14.Ba1+–) 13...d5?? (better is 13...Be6 14.Qg6 Bf7+/–) 14.ef5+– (14.Ba1?! 0-0-0 15.Ke1 de4=) 14...Qb4 15.Bc3 Qf4 (15...Qb1 16.Qe6 Be7 17.Qc6 Kf7 18.Qd5 Kg7 19.Ba1 Rd8+/–) 16.Ke2 Nc2 (16...Qf5 17.Ba1 0-0-0 18.Qh7 Qg4 19.Ke1+–) 17.Qg6 (17.Qe6 Kd8 18.Qd5 Ke7 19.Qa8 Qf5+–) 17...Kd8 (17...Ke7+–) 18.Qf6 Kd7 (18...Kc8 19.Be5 Qh6 20.Qf7+–) 19.Qe6 Kd8 20.Be5 (better is 20.Qd5 Bd6 21.Qa8 Kd7+–) 20...Qg4 (20...Nd4 21.Bd4 Qd4 22.Nf3 Qb2 23.Nbd2+–) 21.Nf3 Qg2 22.Bf6 Be7 23.Be7 Ke8 24.Bf6 (24.Bd6 Kd8 25.Qe7 Kc8 26.Qc7) 24...Kf8 25.Qe7 Kg8 26.Rg1 Nd4 27.Bd4 Qg1 1–0. GuestXSBG – GuestGCJT, freechess.org, 2016.

4.a3 Rh6 5.Be2 d6 6.Bh5 g6 7.Bg4 f5 8.ef5 gf5 9.Bf3 Nf6 10.Nh3 e4 11.Bf6 Qf6 12.Nc3?? (better is 12.Bh5 Kd8 13.Nc3=) 12...ef3–+ 13.Qf3 b6?? (better is 13...Nc6–+) 14.Qa8+– Qd8 15.Qb8 d5 16.0-0 Be7 (16...Be6 17.Qa7 Kd7 18.Rfe1+–) 17.Rfe1 Kd7 (17...c6 18.Qa7 Kf8 19.Re2+–) 18.Nd5 Bb7 (18...Bf6 19.Nhf4 Bg5 20.Qa7 Bf4 21.Nf4+–) 19.Qd8 (19.Re7 Qe7 20.Qc7 Ke6 21.Re1 Kf7 22.Re7 Kg6 23.Qg3 Kh5 24.Nhf4) 19...Bd8+– 20.Nhf4 c6 21.Ne3 Rf6 22.d4 Bc7 23.c4 (better is 23.Nd3 Kd6+–) 23...Bf4 24.Nc2 c5 (24...Ba6 25.b5! cb5 26.Nb4+–) 25.dc5 bc5 26.Rad1 Kc7 27.Re7 (27.Re7 Kc8 28.bc5+–) 1–0. Fournier,Frederic (1860) – Tillard,Nicolas, Simultanee Senlis FRA, 2005.

4.Bc4 Nh6? 5.a3 g6 6.Nc3 c6 7.d4 d5 8.ed5 cd5 9.Nd5 Be6? 10.de5 Bd5 11.Bd5 Nd7 12.Nf3 Nf5 13.0-0 fe5 14.Ne5 Ne5 15.Be5 Rh7 16.Bb7 Qd1+= 17.Rad1 Rd8?? 18.Bc6+– Ke7 19.Bf4 Bh6 20.Rfe1 Kf6 21.Rd8 Bf4 22.g3 Be5 23.Rd7 Rh8 24.Ra7 Rc8 25.b5 Nd4 26.Ra6 Nc2 27.Bb7 Kf5 28.Re5! Ke5 29.Bc8 (29.Bc8 Nd4 30.Rg6 Nb5 31.Rg5 Kd6 32.Rb5+–) 1–0. bratek55 (1650) – czmir (1660), internet, 2011.

4.Be2 g6 5.a3 c6 (5...a5 6.b5+=) 6.Nf3 (6.d4 ed4 7.Nf3 d5 8.Qd4 Bg4+/–) 6...d5+= 7.Nc3 (7.ed5 cd5 8.0-0 Nc6+=) 7...d4 8.Nb1 Bg4 9.0-0 h4 (better is 9...Ne7!?+=) 10.Nd4!+/– ed4 (10...Qd4 11.Bd4) 11.Bg4+– Qd6 (11...a5 12.ba5 Ra5 13.h3+–) 12.d3 (12.Bc8 a5 13.Qg4 Ne7+–) 12...Nh6 (12...a5 13.ba5 Ra5 14.c3+–) 13.Nd2 Qf4 (13...a5 14.ba5 f5 15.Bh3+–) 14.Bc8 (14.Be6 Qd6 15.Bh3 Bg7+–) 14...Nd7 (14...Qc7 15.Bh3 c5 16.c3+–) 15.Bb7 (better is 15.Bd7 Kd7 16.Bd4+–) 15...Rb8?? (15...Ng4 16.Nf3 Nde5=) 16.Bc6 Rb6 (16...Bd6 17.Nf3 Bc7 18.Bd4+–) 17.Bd7 Kd7 18.Bd4 Ng4 (18...Rb7 19.c4+–) 19.g3 hg3 20.fg3 Qh6 (20...Qg5 21.h4 Qh5+–) 21.Qg4 Ke7 (21...f5 22.Qe2 Bg7 23.Bb6 Ba1 24.Be3+–) 22.Rf2 (22.Rf2 Re6 23.Ba7+–) 1–0. Wall,Bill – Banzai, internet, 2003.

4.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.Nf3).

4.e3 c5 5.bc5+= Bc5 6.c4 Ne7 7.Be2 Nbc6 8.d4 Bb4 9.Nbd2 e4 10.cd5? Qd5?? 11.Ng1=+ Qa5 12.Bc4 Bd7 13.a3 Bd2 14.Qd2 Qd2 15.Kd2 0-0-0 16.Ne2 Bg4 17.Ng3 Na5 18.Ba2 Kb8 19.Ne4 Rhe8 20.h3 Bd7 21.Nc5 Bc6? 22.Bc3 1–0. horacyad2010 – cccp1918, internet, 2011.

(--> 1.b4 e5 2.Bb2 Bb4 3.f4 f6).

4.fe5=+ Nc6 5.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.f4 Nc6 4.Nf3 f6 5.fe5).

4.e4 ef4 5.Bc4 Qe7 6.d3 (6.Nc3=) 6...Be6 (6...c6 7.Qe2+=) 7.Qh5 (better is 7.Be6 Qe6 8.Nh3+=) 7...g6–/+ 8.Qb5? (better is 8.Qe2 Bc4 9.dc4–/+) 8...c6–+ 9.Qa5 Bc4 10.dc4 Qe4 11.Kf2 (11.Ne2 Qg2 12.Rf1–+) 11...Qc2 12.Ne2 Qb2 13.Na3 (13.Nbc3 Nd7–+) 13...Qe5 14.Rhe1 (14.Nc2 Na6–+) 14...Qa5 15.ba5 Kf7 (15...d5 16.Nc2 Bc5 17.Ned4 Ne7 18.Rab1–+) 16.Nf4 (16.Reb1 g5–+) 16...Bg7 (better is 16...d5 17.Ne6 Ba3 18.Nd8 Kg7 19.Ne6 Kh6 20.Re3–+) 17.Re6 (17.Rab1 b6! 18.ab6 ab6 19.Rb6–+) 17...f5 (17...Bh6 18.Nd5 Ke6 19.Nc7 Kf7 20.Na8–+) 18.Rae1 (18.Rb1 b5! 19.Ree1 a6–+) 18...Be5 19.Nd3 (19.R1e5 de5 20.Re5 Nf6–+) 19...Nd7 (better is 19...Ke6 20.Rb1 b6–+) 20.Ne5 de5 21.Rd6 Ngf6 (21...Ke7 22.Rd3–+) 22.h3 (22.a6 Ke7 23.ab7 Kd6 24.ba8R Ra8–+) 22...Rad8 23.g4 (23.a6 Nc5 24.Rd8 Rd8–+) 23...Ne4 24.Re4 fe4 25.Ke3 (25.a6 Ke7 26.Rd2 b6–+) 25...Ke7 26.Rd2 Nc5 27.Nc2 (27.Nb1 Rd3 28.Rd3 ed3–+) 27...Rd2 (better is 27...Rd3!? 28.Rd3 ed3 29.Na3–+) 28.Kd2 Ke6 0–1. Djakov,Joao – Beland,Stephane, Internet Section, 2004.

4.fe5 de5 5.a3 a5 6.c3 Nc6 7.Nf3 Bg4 8.h3 Bh5 9.e3 (better is 9.b5!? Na7 10.e4=) 9...e4 10.Nd4?? (better is 10.g4 Qd6 11.Kf2–/+) 10...Bd1–+ 11.Kd1 (11.Nc6 bc6 12.Kd1 Ne7–+) 11...Nd4 12.ed4 ab4 13.ab4 Ra1 14.Ba1. Fournier,Frederic (1695) – Lycanth (1740), rated blitz game, 2002.

4.e3 fe3–+ 5.Qe2 Bb4 6.a3 Bc5?? 7.d3?? Qe7 8.Nc3 Nh6 9.Nh3 b6 10.Kd1? Bb7 11.Kc1 0-0 12.Kb1 Nc6 13.Ka2 Nf5 14.Re1 Rfe8 15.Nd5 Qe6 16.c4 Rac8 17.Ne3 Ne3 18.d4 Nd4 19.Qd3 Ndc2 20.Re3 Ne3 21.Nf4 Qg4 (21...Qg4 22.Nd5 Nd5 23.cd5 Re1–+) 0–1. Fidel – Nettundfrech, internet, 2007.

4.Nh3 Bb4 5.Nf4 Nc6 6.e4 g6 7.Nd5 Bc5 8.d4 Bd6 9.Bd3 Nb4 10.0-0 Nd3 11.Qd3 c6 12.e5 cd5 (12...fe5!? 13.Qf3 Nh6 14.Nf6 Ke7=) 13.ed6+/– Qb6 14.Nc3 Qd6 (14...Qb2? 15.Nd5 Kf7 16.Rfb1 Qa1 17.Ra1+–) 15.Nb5 Qc6 16.Ba3 Kf7 17.Nd6 Kg7 18.Qe3 h5 19.Rf6!! Qd6 (19...Kf6 20.Qe5 Mate attack; 19...Nf6 20.Qe7 Mate attack) 20.Rd6 a5 21.Qe5 Kh6 22.Bc1 Kh7 23.Qe8 Kg7 24.Qg6 (24.Rg6 Kh7 25.Qf7) 24...Kf8 25.Rf6! Ke7 (25...Nf6 26.Ba3 Mate attack) 26.Ba3 Kd8 27.Rf8 Kc7 28.Qd6 1–0. Fournier,Frederic (2365) – 24816, Active (2/12), 2005.

4.a3 Bc5 5.Nf3 h5 6.h3 hg4–+ 7.hg4?? Rh1 8.d4 ed4 9.Bc1 d5 10.Qd3 Ne7 11.Ne5 fe5 12.Qg3 Nec6 13.Nc3 dc3 14.Qf3 Qh4 15.Bg5 Qg5 16.Qh1 Qd2# 0–1. derek2735 – Caissa, Live Game Caissa's Web, 2006.

4.c3 Bc5 5.e4 Nc6 6.Bd3 Nge7 7.Ba3 Ba3 8.Na3 d5 9.h4 de4 10.Be4 Be6 11.g5 f5 12.Bd3?? e4 13.Bc4 Bc4 14.Nc4 0-0 15.h5 Nd5 (15...Nd5 16.Qb3 Rb8–+ (16...Qg5?! 17.Ne3=); 15...b5!? 16.Nb2 Nd5 17.Qb3–+) 0–1. SunnysideTrpt – Ityke, internet, 2007.

4.Bg2 Nh6 5.h3 c6 6.a3 Bc5 7.a4? (better is 7.d4 ed4 8.Bd4–/+) 7...Qb6–+ 8.a5?? (8.Bc3 Bf2 9.Kf1–+) 8...Bf2 9.Kf1 Qb2 10.Kf2 (10.Nc3 Bd4 11.Ra2 Qb4–+) 10...Qa1 11.c3 d5 12.Nf3 0-0 13.Qb3 Qa5 14.Nh4 Nd7 15.Nf5 Nf5 16.gf5 Nc5 17.Qc2 e4 18.e3 (18.Rf1 Bf5 19.Kg1 Bg6–+) 18...Nd3 (19.Kg1 Qc7–+) 0–1. yellowducky – Caissa, Live Game Caissa's Web, 2004.

4.g5 d5 5.Nf3 Be6 6.Ne5 fe5 7.Be5 Nc6 8.Bg7 Qg5 9.Bh8 0-0-0 10.c3 Bc5 11.d4 Bb6 12.a4 Nge7 13.Be5 Ne5 14.de5 Qe5 15.a5 Bc5 16.a6 b6 17.Na3 Qc3 18.Qd2 Qa1 19.Qd1 Bb4 0–1. swindon – pulaster, gameknot.com, 2013.

4.a3 Bc5 5.Nc3 Nc6 6.Na4 Be7 7.Nf3 d5 8.d4 e4 9.Nd2 Nh6 (better is 9...e3 10.Nb3 f5–+) 10.Rh3?? (better is 10.e3–/+) 10...Bh3–+ 11.gh3 f5 12.f4 (12.e3 f4 13.Qh5 Nf7 14.c4 fe3 15.fe3 Bh4 16.Kd1–+) 12…Bh4 0–1. jaseph44 – Caissa, Live Game Caissa's Web, 2004.

4.c3 Be7 5.a4 (5.c4 Nh6–/+) 5...b6 (5...d5 6.e3–+) 6.Rh3 (6.c4 Nh6–/+) 6...d5 7.Rg3 Nh6 8.Rg7 Nf5 9.Rg4 Ne3! 10.fe3 (10.de3 Bg4) 10...Bg4 11.Nf3 (11.g3 Bf5–+) 11...0-0 (11...e4 12.Nh2 f5 13.Kf2–+) 12.Na3 (12.g3 Qd6 13.Nh2 Be6–+) 12...e4 13.Nh2 f5 14.g3 Bh4! 15.gh4 (15.Kf2 Qd6 16.Kg2 Qg3 17.Kh1–+) 15…Qh4# 0–1. bboytboy – Caissa, Live Game Caissa's Web, 2004.

4.ba5 Na6 5.e3 Bc5 6.d3 d6 7.Be2 Ne7 8.Nd2 0-0 9.Nb3 Ba7 10.Nf3 Bg4 11.0-0 Nd5 12.c4 Ne7 13.d4 e4 14.Nfd2 Bf5 15.Qc2 d5 16.c5 Nc6 17.Ba6 ba6 18.Rab1 Bg4 19.h3 Be2–/+ 20.Rfe1 Bd3 21.Qc1 Bb1 22.Qb1 f5 23.Rf1 f4 24.ef4 Rf4 25.Bc1 Qf6 26.Qc2 Nd4 27.Nd4 Qd4 28.Nb1? Rf7–+ 29.Be3 Qe5 30.Qc3 Qc3 31.Nc3 c6 32.Rb1 Rb8 33.Rb8 Bb8 34.Na4 Be5 35.Nb6 d4 36.Bc1 h6 37.Kf1 g5 38.Ke2 Kf8 39.Nc4 Bc7 40.Nb6 Ke7 41.Bb2 d3 42.Ke3 Rf5 43.Bc3 Rc5 44.Bb4 Kd6?? 45.Nc4?? Kd5–+ 46.Bc5 Kc5 47.Nd2 Ba5 48.Ne4 (48.Ne4 Kc4 49.f3–+) 1–0. exp2005 – gingis11, internet, 2011.

4.b5 Qe7 5.e3 c6 6.a4 cb5 7.ab5 Nh6 8.Bc4 Nf5 9.Ba3 d6 10.Nf3 Be6 11.Be6 Qe6 12.d3 Be7 13.Nbd2 Nd7 14.c4 Nc5 15.Qc2 b6 16.e4 Nd4 17.Nd4 ed4 18.0-0 0-0 19.f4 Qg4 20.Rae1 Rfe8 21.h3 Qg3 22.Re2 Qd3–/+ 23.Qd3 Nd3 24.Rf3 Nc5 25.Nb3 d3 26.Rd2?? Nb3–+ 27.Rdd3 Nc5 0–1. amator111 (1630) – 0707, internet, 2011.

4.b5 Ne7 5.d4 ed4 6.Bd4 d5 7.e3 (7.Nf3 Nd7+=) 7...Nf5 8.Bb2 Be6 (8...Bc5 9.Nc3 c6 10.Bd3=) 9.Nc3+= Bd6 10.Nd5?? (better 10.Nf3 c6 11.Bd3+=) 10...Bd5-+ 11.Qg4 (11.Qd5?? Bb4! 12.ab4 Qd5 13.ba5 Nd6-+) 11...Be6 12.Qe4 Be5! 13.Be5 fe5 14.Qe5 Qd6 15.Qc3 Nd7 16.Rd1 (16.e4 Nh4 17.g3 Ng6-+) 16...Qc5 17.Ne2 0-0 (17...0-0-0 18.Qc5 Nc5 19.Rd8 Rd8 20.Nc3-+) 18.Qc5 Nc5 19.Nf4 Bf7 20.Bd3 Ne7 (20...Nh4 21.0-0-+) 21.h4 (21.f3 Rad8-+) 21...Rad8 22.h5 h6 23.g4 Nd3 (23...Nd5 24.Ne2-+) 24.cd3 (24.Rd3 c6-+) 24...Nd5 25.Ne2 Be8 26.Rb1 (26.a4 Rf6-+) 26...Rd6 27.Rg1 Rdf6 28.e4 Nf4 29.Nf4 Rf4 30.b6 (30.Rb2 Rf3 31.g5 hg5 32.Rg5 Rd3-+) 30...c6 (30...c5 31.Kd2-+) 31.Rb2 (31.Rg2 Bd7 32.g5 hg5 33.Rg5 Rf2-+) 31...Rf3 32.Rd2 Rh3 33.Kf1 (33.Kd1 c5 34.Kc2 Rff3-+) 33...Rf4 34.Ke1 (34.Ke2 c5 35.e5 Bd7-+) 34...Kf8 35.a4 (35.Kd1 Bd7 36.g5 Rg4 37.Rg4 Bg4 38.Kc2 hg5-+) 35...c5 36.Rg3 (36.g5 Bh5 37.gh6 gh6-+) 36...Rg3 37.fg3 Rg4 38.Rf2 (38.Rc2 Rg5 39.Rc4 Bf7-+) 38...Bf7 (38...Ke7 39.Rc2 Kd6 40.Kf2-+) 39.Rf5 (39.Rc2 Rg5 40.Kd2 c4 41.dc4 Rg3-+) 39...Rg3 (better 39...Rg5 40.Rg5 hg5 41.Kd2-+) 40.Rc5 Rd3 41.Ra5 (41.Rc7 Bh5 42.Rb7 Rb3-+) 41...Re3 42.Kf2 (42.Kd2 Re4 43.Kd3 Re6-+) 42...Re4 43.Rc5 (43.Ra8 Ke7 44.Ra7-+) 43...Ra4 44.Rc8 (44.Rc7 Bd5-+) 44...Be8 45.Rb8 Rf4 46.Kg3 (46.Ke3 Rf7-+) 46...Rf7 47.Kg4 Rd7 48.Kg3 (48.Kh4 Kf7-+) 48...Ke7 49.Kg4 (49.Kh4 Bf7 50.Rc8 Rd4 51.Kg3 Bh5-+) 49...Bf7 50.Kh4 (50.Kf5 Bh5 51.Rc8 Bf7-+) 50...Kf6 51.Kg4 (51.Rf8 Rd5 52.Kg3 Rd6-+) 51...Ke5 52.Rf8 (52.Ra8 Rd4 53.Kg3 Bh5-+) 52...Rd4 53.Kg3 Bh5 54.Rb8 (54.Rc8 g5 55.Rc5 Kf6-+) 54...Rd7 55.Rc8 Bf7 56.Rc5 Kd6 (56...Bd5 57.Kg4-+) 57.Rc2 (57.Rb5 g5-+) 57...g5 58.Rf2 (58.Kg4 Ke5 59.Re2 Kf6 60.Rf2 Kg6-+) 58...Be6 59.Rh2 (59.Kh2 Rh7-+) 59...Rh7 60.Rd2 Kc5 61.Re2 (61.Kf2 Bd7-+) 61...Bd7 62.Re1 (62.Kf2 Kb6 63.Rb2 Kc7 64.Rc2 Bc6-+) 62...Kb6 63.Re5 (63.Rb1 Kc6-+) 63...Kc6 64.Kg2 (64.Re1 b5 65.Rb1 Kc5-+) 64...b5 65.Kh2 (65.Kf3 Rf7 66.Kg2 b4-+) 65...b4 66.Re4 (66.Kg1-+) 66...Kc5 67.Re3 Kd4 68.Rf3 Kc4 69.Rf2 b3 70.Kg3 Bc6 71.Kg4 Kc3 72.Re2 b2 73.Re3 Kb4 74.Re1 Bb5 75.Rb1 Kc3 76.Re1 Bd3 77.Kg3 (77.Rg1 h5 78.Kh3 h4 79.Kg4 b1Q 80.Rb1 Bb1 81.Kh3 Bf5 82.Kg2 h3 83.Kh2 Bb1 84.Kg3 h2 85.Kf2 h1Q 86.Ke3 Qg1 87.Kf3 Rf7 88.Ke2 Bd3) 77...b1Q 78.Rb1 Bb1 79.Kg2 (79.Kf2 h5 80.Kg3 h4 81.Kh3 Bf5 82.Kg2 h3 83.Kh2 Bb1 84.Kg1 h2 85.Kf2 h1Q 86.Ke3 Qg1 87.Kf3 Rf7 88.Ke2 Bd3) 79...h5 80.Kg3 (80.Kh2 h4 81.Kh3 Bf5 82.Kg2 h3 83.Kh2 Bb1 84.Kg3 h2 85.Kf2 h1Q 86.Ke3 Qg1 87.Kf3 Rf7 88.Ke2 Bd3) 80...h4 81.Kg2 (81.Kh3 Bf5 82.Kg2 h3 83.Kf3 h2 84.Ke2 h1Q 85.Ke3 Qh2 86.Kf3 Rh3) 81…h3 (81...h3 82.Kg3 h2 83.Kf3 h1Q 84.Ke3 Rf7 85.Ke2 g4 86.Ke3 Qe4) 0-1. Martins,Karin - Niewold,Jaap (1730), IECG, 2004.

4.c3 c5 5.b5 a4 6.c4 d5 7.e3 d4 8.d3 Nd7 9.Ne2 b6 (9...Bd6 10.Ng3=) 10.Ng3 Bb7 11.e4 Bd6 12.Be2 Ne7 13.Nd2 0-0 14.0-0 f5 15.ef5 Nf5 16.Nf5 Rf5 17.f3 (17.Bg4 Rf8=) 17...Qh4 18.Qe1 Qh6 19.Ne4 Bc7 20.Bc1 Qg6 21.Qd2 Raf8 22.Rf2 Be4 23.de4 R5f7 24.Qc2 h5 (24...Ra8 25.Rf1=) 25.Bd2 (25.Qa4 h4+=) 25...h4 26.Raf1 h3 27.g3 Nf6 (27...Ra8 28.Bd3+=) 28.Qa4 Nh5 29.Kh1 (29.Qc2 Bd8+=) 29...Rd7 (better 29...Nf6 30.Kg1 Nh5=) 30.Qd1?? (better 30.Bd3+/-) 30...d3-+ 31.Bd3 (31.Bc3 Rfd8-+) 31...Rd3 32.Qe2 (32.Qa4 Ng3! 33.hg3 Qg3-+) 32...Ra3 33.Rd1 Ra2 34.Qe3 Rd8 (34...Qe6 35.Rc1-+) 35.Qb3 Raa8 36.Be3 Rd1 37.Qd1 Qd6 38.Qc2?? (38.Rd2 Qf6 39.Kg1-+) 38...Ra1 39.Bc1 Qd4 (better 39...Ra2! 40.Qd2 Rd2 41.Rd2 Qf8-+) 40.Rd2?! (40.Rf1-+) 40...Qe3 41.Qd1 Kh7 (41...Nf6!? 42.Rc2-+) 42.Rc2 Rc1 (better 42...Bd8! 43.Be3 Rd1 44.Bg1 Rd3-+) 43.Rc1= Qd4 44.Qd4 (44.Qe2 Qd6=) 44...ed4 45.Kg1 Nf6 (45...g5 46.Ra1 Ng7 47.Ra8=) 46.Kf2 Nd7 47.f4 g5 48.e5 (48.Ra1 Bb8= (worse 48...gf4 49.gf4 Bf4 50.Ra7+/-)) 48...gf4 49.gf4 Kg6 50.Kf3 (50.Rg1 Kf5=) 50...Kf5=+ 51.Ra1 (51.Rg1 Be5 52.Rg5 Kf6=+) 51...Be5 52.fe5 (better 52.Ra7!? Ke6 53.Rd7 Kd7 54.fe5=+) 52...Ne5-/+ 53.Kg3 Nc4 54.Kh3 d3 55.Kg3 d2 56.Kf3 Ke5?? (better 56...Nb2 57.Ke2 d1Q 58.Rd1 Nd1 59.Kd1 Kg4-+) 57.Ke2+/- Kd4 (57...Nd6 58.Kd2 Nb5 59.h4+/-) 58.Ra8 (58.h4!? Nd6 59.h5 c4+-) 58...Kc3 59.Rb8?? (59.Rd8 Na3 60.h4 Nb5 61.h5+-) 59...Kc2 (better 59...Nb2 60.Rd8 d1Q 61.Rd1 Nd1-+) 60.Rd8+- d1Q 61.Rd1 Kc3? (61...Na3 62.h4 Nb5 63.Rd2 Kc3 64.h5+-) 62.Rc1 (62.h4 Ne5 63.h5 Nf7+-) 62...Kb4 63.Rb1 Kc3 64.h4 Ne5 (64...Nd6 65.h5 Nf5 66.Rh1+-) 65.h5 Ng4 (65...Ng4+-). dannysmet (2045) - ValMed (2170), Rated Blitz game, lichess.org, 2020.

4.c3 Nc6 5.e3 Nh6 (5...ab4 6.cb4 Nh6 7.d4 ed4 8.ed4=) 6.d4 e4 (6...ed4 7.ed4 d5 8.b5=) 7.b5 Ne7 8.Ne2 d5 9.Ng3 Bg4 10.Be2 Be2 11.Qe2 Nhf5 12.c4 g6 (12...Ng3 13.hg3 c6 14.Nc3=) 13.Nc3 (13.Nf5 Nf5 14.cd5+/-) 13...Bg7? (better 13...Ng3!? 14.hg3 c6=) 14.cd5 (14.Nf5 Nf5 15.Nd5 0-0+-) 14...Ng3 15.hg3 f5 16.Qc4 Qd6 17.a4 (better 17.g4+/-) 17...0-0?? (17...Qb4 18.Qa2 Nd5 19.Qd5 Qb2+/-) 18.Ba3+- Qd7 (18...Qf6 19.d6 Qf7 20.Qf7 Rf7 21.de7+-) 19.d6 Kh8 20.de7 Rfe8 (20...Rg8 21.Qd5 Qd5 22.Nd5+-) 21.Rc1 (21.Qf7 f4 22.Qg6 Bh6 23.Qh6 Re7 24.Be7 Qe7 25.Qf4 Rf8 26.Qe4 Qe4 27.Ne4 Rf7+-) 21...Re7 22.Be7 Qe7 23.Nd5 Qa3 (23...Qd6 24.Nf4 g5 25.Ne6+-) 24.0-0 (24.Nf4 h6+-) 24...Rc8 (24...c6 25.bc6 bc6 26.Qc6+-) 25.Nc7 (25.Nb6 Rd8 26.Qc7 Qf8+-) 25...Qb4 (25...Qe7 26.Nd5 Rc4 27.Ne7 Rc1 28.Rc1+-) 26.b6! Qc4 (26...Qb6 27.Qe6 Double attack (27.Qe6 Decoy)) 27.Rc4 Bf8 28.Rfc1 1-0. dannysmet (2050) - ibragimtagirov (2055), Rated Blitz game, lichess.org, 2021.

4.Nc3 ab4 5.ab4 Ra1 6.Qa1 Bb4 7.e4 Nc6 8.Bc4 Nge7 9.Nge2 Na5 10.Ba2 b6 11.0-0 Nac6 (11...c6 12.Rb1–/+) 12.Rd1 Bb7 13.d4 (13.Nd5 Nd5 14.Bd5 Bc5=+) 13...Nd4–/+ 14.Nd4 ed4 15.Rd4 c5 16.Rd1 (better is 16.Rd2–/+) 16...Qc8 (16...Bc3 17.Bc3 Be4 18.Be6–/+) 17.Bc4 (better is 17.Nd5!? Nd5 18.Bd5=) 17...Bc3–/+ 18.Bc3 Be4 19.Bd3 (19.Bb5 Bc6 20.Re1 Kf7–/+) 19...Bd3–+ 20.Rd3 d5 21.Rd2 (21.Qa7!? d4 22.Bd2 Qg4–+) 21...0-0 22.Re2 Nf5 23.Qa7 (23.Qa4 Nd6–+) 23...Qc6 24.g4 (24.Qa6 Nd6–+) 24...Qb5 25.Re1 (25.Re6 Qb1 26.Re1 Qc2 27.gf5 Qc3–+) 25...Nh4 26.Re3 Qb1 27.Be1 d4 28.Re4 (28.Re7 Kh8 29.Qb7–+) 28...Nf3 29.Kg2 Ne1 30.Kh3 (30.Re1 Qe1 31.Qb6 Qe4 32.Kg3 Qc2 33.Qe6 Kh8–+) 30...Qc2 31.Re7 (31.Re1 Qf2 32.Qa3 Qe1 33.Qb3 Kh8 34.Kg2 Qe2 35.Kg3–+) 31...Qd3 32.Kh4 g5 33.Kh5 Qg6 0–1. rene822 – Caissa, Live Game Caissa's Web, 2004.

4.c4 ab4 5.ab4 Ra1 6.Ba1 Bb4 7.Qb3 Nc6 8.f4 (8.Nf3 d6-/+) 8...ef4-+ 9.Nf3 (9.Nh3 Bd6 10.Qf3 Ne5-/+) 9...Nh6 10.g3 fg3 11.hg3 Bd6 12.c5 (12.Nd4-+) 12...Bg3 13.Kd1 Qe7 14.Nc3 Qc5 15.Ne4 Qb4?? (better 15...Qa7 16.Bf6 gf6 17.Ng3 Qa1 18.Kc2 Nf7-+) 16.Qb4-/+ Nb4 17.Ng3 d5 (17...Ng4!? 18.Kc1 d6-/+) 18.Bf6= gf6 19.Rh6 Kf7 20.e3 Bg4 21.Be2 c5 22.Rh4 (22.Nh4 Kg7 23.Nhf5 Bf5 24.Nf5 Kf7 25.Bh5 Ke6 26.Ng7 Ke7+/-) 22...h5 (22...Bd7!?=+) 23.Ne5 fe5 24.Bg4 Increasing the pressure on the isolated pawn on h5 24...Kf6 25.Rh5 Rh5 26.Bh5 b5? (better 26...e4=) 27.Be8+- Nd3 28.Bb5 Nf2 (28...e4 29.Ne4 de4 30.Bd3 ed3 31.Kc1+-) 29.Ke2 Ng4 30.e4 d4 31.Bc4 Nh6 32.d3 Kg5 33.Kf3 Ng4 34.Nf5 Nf6 35.Ne7 Nh5 36.Nc6 Kf6 37.Kg4 Nf4 38.Nb8 (38.Nd8!? Ng2+-) 38...Ke7 39.Kf5 Kd6 40.Na6 (40.Bb5 Ne2+-) 40...Ne2 41.Nb8 Ng3?? (41...Nf4 42.Bb5 Ne2+-) 42.Kg4 Ne2 43.Bd5?? (better 43.Na6+-) 43...Nf4= 44.Bg8 (better 44.Kf3 Nd3 45.Na6=) 44...Ne2?? (better 44...Nd3 45.Na6 Nb2=+) 45.Kf3 Nf4 46.Na6?? (better 46.Bc4+-) 46...Nd3= 47.Bc4 Nf4 48.Bb5 Ne6 49.Bc4?? (better 49.Ke2=) 49...Ng5-+ 50.Ke2 Ne4 51.Kd3 Nc3 52.Kc2? (52.Bf7 Nd5-+) 52...Nd5 (better 52...e4-+) 53.Bf1?? (53.Kd3 Nf6 54.Bf7 Nd7-+) 53...Nb4 (better 53...Ne3 54.Kd3 Nf1-+) 54.Nb4 cb4 55.Kb3 e4 (55...Kc5 56.Bd3-/+) 56.Bg2 (56.Kb4 Kd5=+) 56...Ke5= 57.Bh3?? (better 57.Kb4 Kf4 58.Kc4=) 57...Kf4 (57...d3 58.Kc4 Kf4 59.Bd7-+) 58.Bd7?? (58.Kb4 Kg3 59.Bf5=+) 58...d3 59.Bb5 (59.Kb4 e3 60.Kc3 e2-+) 59...Ke3 60.Kb2 (60.Kc4 Kd2 61.Kb4 e3-+) 60...d2 61.Kc2 d1Q (better 61...b3 62.Kd1 b2-+) 62.Kd1=+ b3 63.Kc1 Kf2 64.Kb2 e3 65.Bc4 e2 66.Bb3?? (better 66.Be2 Ke3 67.Kb3=) 66...e1Q 67.Ka3 Qd2 68.Ba4 Qc2 (68...Ke3 69.Kb3 Kd4 70.Ka3 Kc3 71.Bb3 Qd6 72.Ka2 Qa6 73.Ba4 Qa4 74.Kb1 Qb3 75.Kc1 Qc2) 69.Kb4?? (69.Bc2 Kf3=) 69...Qc3 (better 69...Qe4 70.Ka5 Qe1 71.Kb5 Qc3-+) 70.Kb5?? (better 70.Kc3 Kf3=) 70...Qb2 (better 70...Ke3 71.Kb6-+) 71.Ka5 ½-½. only1b4 (2600) - alifie (2485), Rated Bullet game, lichess.org, 2020.

4.Nf3 ab4 5.e4 ba3 6.Na3 Nc6 7.Nb5 Ra1 8.Ba1 Bc5 (8...d5 9.ed5 Nb4 10.Bc4=) 9.Bc4 b6 (9...d5 10.Bd5 Nge7=) 10.h4 (10.d4!? ed4 11.Nfd4 Nd4 12.Bd4 Bd4 13.Nd4+=) 10...Bb7 11.0-0 Na5 (11...Nge7=+) 12.Bd3? (better is 12.Bg8!? Rg8 13.d4 ed4 14.Bd4=) 12...Ne7 13.h5 0-0 14.g4 (better is 14.h6!?–/+) 14...d5 15.ed5? (15.Nc3–+) 15...Qd5 (15...Bd5?! 16.Nc3 Qd7 17.Nh4–+; 15...Nd5?! 16.Bf5 Ba6 17.d4 Bb5 18.dc5 Bf1 19.Qf1–+) 16.Qe1 (16.Be2 Qe4 17.d4 Qg4 18.Kh2 ed4 19.h6–+) 16...Qf3 17.Nc7 Qg3 0–1. tallyho950 – Caissa, Live Game Caissa's Web, 2004.

5.d4 ed4 6.Bd4 Nc6 (6...d5 7.e3=) 7.Bc3 Rc5 (7...Ra8 8.e4=) 8.e3 (8.Nf3 d6=) 8...Nh6 (8...d6 9.Nf3=) 9.Nf3 Be7 10.Be2 0-0 11.0-0 d5 (11...Re8 12.Bb4 Rh5 13.Be7 Ne7 14.Nbd2=) 12.Qd2 (12.Bb4 Nb4 13.ab4 Rc6+=) 12...Nf7 (12...Bf5 13.Rd1=) 13.Bb4+= Nb4 14.ab4 Rc6 15.Ra5 Rd6 16.Nc3 d5 draws heavy fire 16...c6 17.Rfa1 Ng5 18.Nd4 f5 19.f4 (19.Ra8 Ne4 20.Qd3 Bf6+=) 19...Ne6 (19...Ne4 20.Ne4 fe4 21.Ra8=) 20.Na4 (20.Bd3 Nd4 21.ed4 Re6=) 20...Nd4 (20...b5 21.Nb2=) 21.ed4 (21.Qd4? Bf6 22.Qd1 Ba1 23.Qa1 Re6–+) 21...Rh6 22.g3 (22.Ra8 b5 23.Nb2 Bd6=) 22...Bd6 (22...b6 23.Ra7 Re6 24.b5=) 23.Ra8 Re6 (23...b5 24.Nc5=) 24.Nc5+= Re7 25.R1a7 (25.Bh5 Qc7=) 25...Qe8 26.Bf3 b6 27.Nb7 Bc7 28.b5 g5 (better is 28...Qd7!?=) 29.fg5+/– f4 30.g4 Kh8 (better is 30...Re3 31.Kg2 Qg6+/–) 31.bc6 (better is 31.c4!? dc4 32.bc6+=) 31...Qc6= 32.Qb4 Ree8 33.c4 Qe6 (33...Qc4 34.Qc4 dc4 35.Na5=) 34.cd5 (34.Qc3 Qe3 35.Qe3 fe3 (worse is 35...Re3 36.Bd5 f3 37.Ra1+/–) 36.Rc8 Rc8–+) 34...Qe3 35.Kg2 Qd3 (35...Bg4 36.Qf8 Rf8 37.Rf8 Kg7 38.Bg4 Qd2 39.Kf1 Qd3 40.Kg2 Qc2 41.Kh3 Qc3 42.Kh4 Kf8 43.Ra8 Kg7 44.Rc8+=) 36.Rc8 Re2 37.Be2 Qe2 38.Kh3 Threatening mate: Qxf8 38...Rc8 39.Qb1 (39.d6 f3 40.g6 f2–+) 39...Qe3 40.Kh4 Qf2 41.Kh3 Re8 Threatening mate... how? 42.Ra3 Re3 43.Re3 fe3 44.d6 e2 0–1. Junker,Anders – Pleschke,Helmut, 1. B4 Thementurnier, 2000.

5.e3 d5 6.d3 Bd6 7.Nf3 Be6 8.Be2 Ne7 9.0-0 Ng6 10.Nbd2 0-0 11.Qc1 Qe7 12.c4 c6 13.cd5 cd5 14.Qc3 Nc6 15.Nb3 Ra7 16.Rfc1 Rfa8 17.Nc5 Bc5 18.Qc5 Qc5 19.Rc5 Nge7 20.h3 Ra5 21.Ra5 Ra5 22.Kf1 h6 23.Nd2 Rb5 24.Bc1 d4 25.Bf3 Bd5 26.Bd5 Nd5 27.Nc4 Na5 28.Na5 Ra5 29.Bd2 Ra4 30.e4 Nc3 31.Bc3 dc3 32.Ke2 b5 33.Kd1 b4 34.Kc2 ba3 35.Kc3 Ra7 36.Kb3 Rd7 37.Rd1 Ra7 38.Ka2 Kf7 39.g3 Ke6 40.f4 g6 41.Rc1 Ra6 42.Rc3 h5 43.Ra3?? h4 44.Ra6+– (44.Ra6 Ke7 45.fe5 fe5 46.Rg6+–) 1–0. exp2005 – savaludaglava, internet, 2011.

5.e3 d5 6.d4 ed4 7.Bd4 =.

5.e3 g6 6.c4 Nc6 7.Ne2 b6 8.d3 Bb7 9.g3 Nd4!–/+ 10.e4?? Nf3# 0–1. SuperJudge – Brause, ICS rated blitz match, 1995.

5.e3 Nh6 6.Nf3 Be7 7.d4 e4 8.Nfd2 d5 9.c4 c6 10.Be2 Be6 11.Nc3 0-0 12.0-0 Qe8 13.cd5 cd5 14.f3 ef3 15.Bf3+/– Nc6 16.Nb3 Ra8 17.Bd5 Bd5 18.Nd5 Bd6 19.Qe2 Ne7 20.Qc4 Nd5 21.Qd5 Nf7 22.Rae1 Rd8 23.Qf3 b6 24.e4 Ng5 25.Qd3 Rc8 26.d5 Qh5 27.e5 Be5 28.Be5+= fe5 29.d6 Rf1 30.Rf1 Rd8 31.Re1 Nf7 32.d7 Ra8 33.Nd2 Qg5 34.Nf3+– Qe7 35.Qb3?? Ra3?? 36.d8Q!+– Qd8 37.Qa3 Qc7 38.Qe3 h6 39.Ne5 Ng5 40.h4 Ne6 41.Qb3 Qd6 42.Ng6 Kf7 43.h5 Kf6 44.Rf1 Kg5 45.Qf3 Nf4 46.Qg3 Kh5 47.Nf4 (47.Nf4 Qf4 48.Rf4 g5 49.Rf6 g4 50.Qe5 Kh4 51.Rh6) 1–0. wlittle (2300) – sammyo (2035), net–chess.com, 2004.

5.e4 c6 6.d4 d6 7.de5 fe5 8.Qh5 g6 9.Qd1 Nf6 10.Nc3 d5 11.ed5 cd5 12.Bb5 Bd7 13.Bd7 Nbd7 14.Nf3 Qb6 15.Rb1 Ng4 16.0-0= Bc5 17.Nd5 Bf2 18.Kh1+= Qc5 19.Ng5 Ne3?? 20.Ne3+/– Be3 21.Nf7 Ra8 22.Nd6 Ke7 23.Rf7 Ke6 24.Qg4 Kd5 25.c4 Kc6 26.Qd7 Kb6 27.Bc3 Ka7 28.Qb7 1–0. woschkat (2325) – amtrack, net–chess.com, 2002.

5.e4 Nc6 6.Nf3 Bc5 7.Bc4 Nge7 8.0-0 d5 9.ed5 Nd5. Shakkimestari – Shinidoki, internet, 2007.

5.Nf3 Nc6 6.e3 (6.e4 Bc5=) 6...Nge7 7.c4 (7.Be2 d5=) 7...Ng6 (7...e4 8.Nd4=) 8.Nc3 d6 9.Be2 (9.d4 ed4 10.ed4 Bg4=) 9...Be6 (9...Be7 10.0-0=) 10.0-0 (10.d4 ed4 11.ed4 d5 12.cd5 Bd5=) 10...Be7 (10...d5 11.cd5 Bd5 12.Nd5 Qd5 13.d4=) 11.d4+= Bf7 (11...Bg4 12.Ne5 Be2 13.Nc6 Bd1 14.Nd8+=) 12.d5 Nb8 (12...Na7 13.Qb3 Qa8 14.Rfb1+=) 13.Qc2 (13.Qb3 Ra7+=) 13...0-0 14.Bd3 (14.Rab1 f5+=) 14...Nd7 15.Rfd1 Nc5 16.Bf5 Qa8 (16...c6 17.Rab1+=) 17.Nb5 Bd8 (17...Qd8 18.Bc3 Ra6 19.Bb4+=) 18.Bc3+/– Ra6 19.Bb4 b6 (19...Na4 20.Qe4+/–) 20.Bc5 bc5 (20...dc5 21.Be4+/–) 21.a4 (21.Qe4 Ra4+/–) 21...Re8 22.Rdb1 Nf8 23.Nd2 (23.Nc3 g6 24.Bd3 f5+=) 23...g6 24.Bd3 f5 25.e4 f4 (25...fe4 26.Ne4 Ra5 27.Ra3+=) 26.Be2 (26.Ra2 Nd7+=) 26...Nd7+= 27.g3 (27.Bd1!?+=) 27...fg3 28.fg3 (28.hg3 Rf8=) 28...Nb6 29.Nc3 Bg5 (29...Rf8 30.Rf1=) 30.Nf3 Be3 31.Kg2 Bd4 (31...Rf8 32.Ra3 Bd4 33.Nd4 ed4 34.Nb5 Ra4 35.Nc7+=) 32.Ng5 (32.Nd4 ed4 33.Nb5 Re7= (33...Ra4 34.Nc7 Ra1 35.Na8 Rb1 36.Qb1 Na8 37.Qb7+–; 33...Na4?? 34.Nc7 Qa7 35.Na6+–)) 32...Bc3 (32...Re7 33.Rb3+=) 33.Qc3 Ra4 (33...Na4? 34.Qf3 Rf8 35.Rf1+– (35.Nf7 Rf7 36.Qa3 c6+=)) 34.Rf1 (34.Ra4 Qa4 35.Nf7 Kf7 36.Rf1 Kg8+=) 34...Ra1 (34...Rf8 35.Ra4 Qa4 36.Bg4=) 35.Ra1 Qd8 36.Nf7 (36.Qc1 Rf8+=) 36...Kf7 37.Qe3 (37.Qf3 Kg7+=) 37...Kg7 (37...Rf8 38.Rf1 Kg7 39.Rf8 Qf8 40.h3+=) 38.Rf1 (38.h3 Rf8+=) 38...Rf8 39.Rf8 Qf8 40.Qg5 (40.h3 Qe7–/+) 40...Qf6 (40...Qe8 41.Qe3–/+) 41.Qe3 (41.Qf6 Kf6 42.Kf3 Ke7–/+) 41...h6 42.Qa3 Qe7 43.Qa7 h5 (43...Qd7 44.Qb7+=) 44.Bd3 Kh6 45.Qb8 Qg7 (45...Kh7 46.Be2+=) 46.Qe8 (46.Be2 Kh7+=) 46...Nd7 47.Qc8 Nf6 48.h3 (48.Kg1 h4+=) 48...g5 49.Qf5 (49.Qe6 g4+=) 49...Qg6 (49...g4 50.h4+=) 50.Qc8 Qf7 51.Be2 (better is 51.Qh8 Kg6 52.Qc8–/+) 51...Ne4?? (better is 51...Qh7 52.Bd3 Qd7–/+) 52.Qh8+– Qh7 53.Qh7 Kh7 54.Bd3 h4 (54...Kh6 55.Be4 g4 56.Kg1+–) 55.Be4 Kh6 56.Kf3 Kh5 57.Bf5 hg3 58.Kg3 Kh6 59.Kg4 (59.Kg4 e4 60.Be4+–) 1–0. Wall,Bill – Ed3149, internet, 2004.

5.Nf3 d5 6.Nc3+=.

5.a6 b6 6.e3 g6 7.d4 Ba6 8.Ba6 Ra6 9.Qe2 Ra7 10.d5 Na5 11.Nc3 c6 12.Qd3 Ne7 13.dc6 Nec6 14.Nb5 Ra8 15.e4 Nb7 16.Nf3 Nc5 17.Qe3 Ra5 18.c4 Ra4 19.Rc1 Be7 20.Rc3 0-0 21.g4 Na7 22.Na7 Ra7 23.Bc1 Qa8 24.h4? Ne4–+ 25.Qe4 Qe4 26.Kf1 Qg4 27.Rg1 Qh3 28.Ke2 e4 29.Rg3 ef3 30.Rcf3 Qe6 31.Re3 Qc4 32.Kf3 Bc5 33.Re4 Qc1 34.h5 Qh1 35.Kf4 Qh5 36.Rg6 hg6 37.a4 Bf2 38.Re5 g5 39.Rg5 fg5 40.Ke5 Qg4 41.Kd5 Qd4 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

5.e4 d5 6.a6 de4 7.ab7 Bb7 8.Qh5 g6= 9.Qe2 Rb8 10.Nc3 Nd4 11.Qd1 Bc5 12.Nge2 Bc6 13.Rb1 f5 14.Ng3 Nf6 15.Bc4 f4 16.Nf1 Qe7 17.a4 Rb4 18.Ba1 Ba7 19.Rb4 Qb4 20.Bb5 Nb5 21.Nb5 Bb5–+ 22.ab5 Qc5 23.b6 Qb6 24.Ne3 fe3 25.fe3 Qb5 26.Qe2 Qb1 27.Qd1 Qd1 28.Kd1 Nd7 29.Rf1 Rf8 30.Rf8 Kf8 31.h4 Ke7 32.g4 Ke6 33.Ke2 Nf6 34.g5 Nd5 35.Kf2 Nb4 36.c4 Nd3 37.Kg3 Kd6 38.Kg4 Kc5 39.h5 Kc4 40.h6 Bc5 41.Bc3 Bb4 42.Bb4 0–1. COMP – COMP, 1 minute, 2002.

5.e4 d5 6.a6 de4 7.ab7 Bb7 8.Qh5 g6 9.Qe2 Rb8 10.Nc3 Nd4 11.Qd1 Bc5 12.Nge2 Bc6 13.Rb1 f5 14.Ng3 Nf6 15.Bc4 f4 16.Nf1 Qe7 17.a4 Rb4 18.Ba1 Ba7 19.Rb4 Qb4 20.Bb5 Nb5 21.Nb5–+ Bb5 22.ab5 Qc5 23.b6 Qb6 24.Ne3 fe3 25.fe3 Qb5 26.Rf1 0-0 27.Qe2 Qd5 28.Qa6 Bb6 29.Bc3 Kg7 30.Qa3 Rf7 31.Qa1 Rd7 32.Kf2 Rd8 33.Be5 Qc6 34.Kg1 Rf8 35.Rf4 g5 36.Bf6 Rf6 37.Rf5 Kg6 38.Rf6 Qf6 39.Qf6 Kf6 40.g4 c5 41.Kf2 c4 42.Ke2 Ke5 43.Kf2 Kd5 44.Ke2 h6 45.h3 Ba7 46.c3 Bc5 47.Kf2 Bd6 48.Ke1 Bg3 49.Kd1 Ke5 50.Kc2 Ke6 51.Kb2 Kd5 52.Kb1 Bf2 53.Kc2 Ke6 54.Kd1 Bg3 55.Ke2 Ke5 56.Kf1 Bh4 57.Ke2 Ke6 58.Kd1 Bf2 59.Ke2 Bg3 60.Kd1 Kd6 61.Kc2 Ke5 62.Kb2 Bh4 63.Kc1 Bf2 64.Kd1 Kf6 65.Ke2 Bg3 66.Kd1 Ke7 67.Kc2 Bh4 68.Kc1 Be1 69.Kc2 Kf6 70.Kd1 Bg3 71.Ke2 Kf7 72.Kd1 Ke8 73.Kc1 Kd7 74.Kd1 Kd8 75.Kc2 Bf2 76.Kd1 Ke7 77.Ke2 Bg3 78.Kd1 Kf7 79.Kc2 Ke7 80.Kd1 Kd7 81.Kc1 Bf2 82.Kc2 Kd6 83.Kb2 Ke5 84.Kc2 Kd5 85.Kc1 Bh4 86.Kc2 Kd6 87.Kd1 Bf2 88.Ke2 Bg3 89.Kd1 Bh4 90.Kc1 Be1 91.Kd1=+ Bd2 92.Kd2 Ke5 93.Ke2 Ke6 94.Kf2 Kd6 95.Kg3 Kd7 96.h4 Kc6 97.Kg2 Kb5 98.hg5 hg5 99.Kf2 Ka4 100.Ke2 Kb3 101.Kd2 Kb2 102.Kd1 Kc3 103.Kc1 Kd3 104.Kb1 0–1. EXchess 3.11 – Comet B25, 2004.

5.e4 d5 6.Bb5 Ra5 7.Bc6 bc6 8.Qe2 Rb5 9.Bc1 Bc5 10.ed5 Qd5 11.Nf3 Ne7? 12.c4+– Rb1 13.Rb1 Qd8 14.Rb8 0-0 15.0-0 Ba7 16.Ra8 Bc5 17.a4 Rf7 18.a5 Bb4 19.a6 Bc5 20.Bb2 Ng6 21.d4! Bb6 22.de5 Nf4 23.Qd2 Nd3 24.Ba3 c5 25.e6! Re7 26.Qd3! Qe8 27.Rd1 Re6 1–0. COMP – COMP, 1 minute, 2002.

5.e4 d5 6.ed5 Qd5 7.Nc3 Qa5 8.Bb5 Bc5 9.Qh5 g6 10.Bc6 bc6 11.Qf3 Qb6 12.Rb1 Bf5 13.d3 h5 14.Nge2 Bg4 15.Qg3 Ne7 16.Ne4 0-0 17.h3 Nf5 18.Qh2 Be2 19.Ke2 Bf2 20.Nf2 Qe3 21.Kf1 Ng3 22.Kg1 Rab8 23.Qg3 Qg3 24.Rh2 Qe3 25.Rh1 Qe2 26.Nd1 Qc2 27.Rc1 0–1. Fritz 5.32 – Comet B25, 2004.

5.d4 ed4 6.Bd4 Nc6 7.Nf3 Nd4 8.Qd4 c6 9.Qe3 Ne7 10.Nbd2 Qa5 11.Nd4 Ra7 12.N4b3 Qa4 13.Qb6 Ra6 14.Qc7 b5 15.e3 Ra7 16.Qd6 Bd7 17.Nc5 Qc2–+ 18.Be2 Qc3 19.Ncb3 Nc8 20.Qg3 g6 21.Rc1 Qe5 22.f4 Qe7 23.Nb1 Nd6 24.Nd4 c5! 25.Nc2 Ne4 26.Qh4 f5 27.Qe7 Be7 28.0-0 Bf6 29.Rcd1 Bc6 30.Nd2 Nc3 31.Rde1 b4! 32.ab4 Ra2 33.Nf3 Rc2 34.Bd3 Ra2 35.bc5 Na4 36.Nd4 Kd7 37.Rc1 Rd2 38.Nc6 Kc6 39.Rfd1 Rb2 40.Ra1 Nc5 41.Ra5 Bc3 42.Ra3 Bb4 43.Raa1 Bd2 44.Bf1 0–1. COMP – COMP, 2002.

5.e3 Nc6 6.a6 ba6 7.Nc3 Rb8 8.Rb1 h5 9.Be2 g6 10.Nf3 Nge7 11.d4 e4 12.Nd2 h4 13.0-0 h3= 14.gh3 Bh3–/+ 15.Re1 Qc8 16.Nf1 Bg7 17.f3 ef3 18.Bf3=+ Be6 19.e4 de4 20.Be4 0-0 21.d5 f5–/+ 22.de6 fe4 23.Re4 Rb2 24.Rb2 Bc3 25.Rb1 Ne5 26.Rb3 Qa8 27.Nd2–/+ Qc6 28.Qe2 Bd2 29.Re5 Qc2 30.Rd3 Qc1 31.Kg2 Bf4 32.Ra5 Qc6 33.Kh3 Kg7 34.Rb3? Rh8 35.Kg4 Rh2 36.Qe1 Rg2 37.Kh3 g5 38.Qa1 Kh7 39.Qb1 Kh6 40.Rg5 0–1. EXchess 3.11 – Comet B50, 2004.

5.e3 Nc6 6.c4 Be6 7.cd5 Bd5 8.Nc3 Ra5 9.Nd5 Qd5 10.d4 ed4 11.ed4 Bd6 12.Nf3 Nge7 13.Bd3 0-0 14.Qc2 Qe6 15.Kf1 g6 16.Bc4 Nd5 17.Qb3 Rb8 18.Bc3+/– Kg7 19.Bd2 Qf7 20.g3 Qe6 21.Kg2 Qf5 22.Rhe1 Nb6 23.Be6 Rb5?? 24.Qd1 Qh5 25.g4 Qd5 26.Bd5 Rd5 27.Bc3 h5 1–0. Fritz 5.32 – Comet B50, 2004.

6.Bd3 Be6 7.Bc3 Ra8 8.Qh5 Bf7 9.Qh3 Nh6 10.f4 e4 11.Be2 Bd6 12.Bh5 0-0 13.Ne2 Qd7 14.Bf7 Rf7 15.Qh5 Qf5 16.Qf5 Nf5 17.0-0 b5 18.Bb2 c6 19.Kf2 Rfa7 20.Nd4 Nd4 21.Bd4 Ra6 22.d3 ed3 23.cd3 b4 24.Rc1 ba3 25.Ra2 Nd7 26.Rcc2 Kf7 27.Ke2 h5 28.Kf2 g5 29.g3 Rb8 30.Nd2 g4 31.Kg2 Ke6 32.e4 Bb4 33.Nb3 de4 34.de4 f5 35.e5 Be7 36.Rc3 Rd8 37.Be3–/+ c5 38.Kf1 Rc8 39.Bc1 Rca8 40.Nd2 c4 41.Nc4 Rc6 42.Be3? Ra4–+ 43.Rca3 Rac4 44.Ra6 Rc2! 45.Rc2 Ra6 46.Ke2 Ra4 47.Rc6–/+ Kd5 48.Rc7 Ra2 49.Bd2 Ne5–/+ 50.Re7 Nf3 51.Rd7 Ke6 52.Rd8 Nh2 53.Re8 Kd7 54.Re3 Nf3 55.Rd3 Ke6 56.Re3 Kf6 57.Rd3 h4 58.gh4 Kg6 59.Rf3 gf3 60.Ke1 f2! 61.Kf2 Rd2 62.Kg1 0–1. COMP – COMP, 2002.

6.Bd3 Ne7 7.Bc3 Ra7 8.Qf3 Nbc6 9.Bb5 Bf5 10.d3 Qd7 11.h3 Ng6 12.Ne2 e4 13.Qh5= ed3 14.cd3 Bd6 15.Nd4 Be6 16.Ne6 Qe6 17.Bd4 Ra8 18.Qg4 Qg4 19.hg4 Nge5 20.Nc3 0-0 21.Nd5 Nd4 22.ed4 Ng4 23.Bd7 Nh2 24.Ne3 Bb4?? 25.Ke2+– Bd6 26.g3 Bg3?? 27.fg3 Rad8 28.Be6 Kh8 29.d5 Nf3 30.Kf3 Rd6 31.Rab1 Ra6 32.Rb7 Ra3 1–0. COMP – COMP, 2002.

6.d4 ed4 7.ed4 Bd6 8.Qh5 g6 9.Qf3 Bf5 10.Qb3 Qe7 11.Ne2 c6 12.Nd2 Nh6 13.Qc3 Ra8 14.Bc1 Nf7 15.Bb2 0-0 16.Qb3 Re8 17.a4 Na6 18.Bc3 Nb4 19.Bb4 Bb4 20.0-0-0? b5–+ 21.ab5 Ra3 22.Qb2 Rea8 23.Kb1 Qa7 24.Kc1 Ra2 25.Nb1 Rb2 26.Na3 Qa3 27.Nc3 Rc2 28.Kb1 Qb2 0–1. COMP – COMP, 1 minute, 2002.

6.d4 ed4 7.ed4 Bf5 8.Be2 Nc6 9.Nf3 Bd6 10.Nbd2 Qe7 11.c4 Ba3= 12.Bc3 Nb4 13.0-0 Be4 14.cd5 Bf5? 15.Re1 Kd8 16.Qb3 Bc2 17.Bb4 Bb3 18.Be7 Ne7 19.Nb3 Ra7 20.Nbd2 Nc8 21.Nc4 Be7 22.Ra7 Na7 23.Ra1 Nc8 24.Na5 Nb6 25.Nb7 Kc8 26.Nc5 Re8 27.Ba6 Kb8 1–0. COMP – COMP, 2002.

6.d4 ed4 7.ed4 Bf5 8.Be2 Bd6 9.c4 dc4 10.Bc4 Ne7 11.Qb3 Be4 12.Nf3 Bf3 13.Qf3 b5 14.Be6 Nd7 15.Qh5 g6 16.Qh6 Qa8 17.0-0 Kd8 18.Re1 b4 19.Qg7 Re8 20.Re3 Bf4 21.Re2 Qa6 22.Re1 Qd6 23.Bf7 Bh2 24.Kh1 Rf8 25.ab4 Ra1 26.Ba1 Qb4 27.Bc3+– Qd6 28.Ba2 h5+/– 29.Re6 Nf5 30.Qg6 Qf4 31.Nd2 Qf2 32.Kh2= Nd4 33.Re4 Ne2 34.Re2 Qe2 35.Bd5 Qe3 36.Ne4 Qf4 37.Qg3 Qg3 38.Kg3 f5 39.Ng5 Ke7 40.Kf4 Kd6 41.Bc4 Nb6 42.Be5 Ke7 43.Bb3 c6 44.Ne6 Rg8 45.Nd4 Rg2 46.Nc6 Kd7 47.Nb8 Kd8 48.Be6 Rf2 49.Kg5 Ke7 50.Bf5 Rf5 51.Kf5 Nc4 52.Bf4 Kf7 53.Bg3 Ne3 54.Kg5 Ke6 55.Kh5 Kd5 56.Kg5 Ke4 57.Nd7 Kd5 58.Kf4 Kd6 59.Ne5 Nf1 60.Bf2 Kd5 61.Nf3 Kd6?? 62.Ke4 Ke6 63.Bh4 Kd6 64.Kd3 Ke6 65.Ke2 Kd5 66.Kf1 Kc6 67.Ke2 Kb7 1–0. COMP – COMP, 1 minute, 2002.

6.d4 e4 7.Bc3 Ra7 8.Bb5 c6 9.Be2 Bd6 10.Bh5 g6 11.Bg4 Bg4 12.Qg4 f5 13.Qh3 b5 14.Ne2 Qg5 15.0-0 Nf6 16.Nd2 Ra3 17.Ra3 Ba3 18.Nf4 Qg4 19.Qg4 Ng4 20.Ra1 Bd6 21.h3 Nf6 22.Ne6 Ke7 23.Nf4 g5 24.Ne2 h5 25.Ra8 b4 26.Bb2 Rf8 27.Ra7 Ke6 28.c4 Rf7 29.cd5 cd5 30.Ra2 Rc7 31.Nb3 f4 32.Bc1 f3 33.gf3 ef3 34.Ng3 Rc3 35.Rb2 Bg3 36.fg3 Ne4 37.Kf1 Nc6 38.Rb1 Kf5 39.Nd2 Ng3 40.Kf2 Ne4 41.Ne4 Ke4 42.Ke1 g4 43.hg4 hg4 44.Bd2 0–1. COMP – COMP, 2002.

5.c4 d5 6.e3 Be6 7.cd5 Qd5 8.Nc3 Qb3 9.Qb3 ab3 10.Nf3 c6 11.bc6 Nc6 12.Bb5 Nge7 13.0-0 (13.d4 0-0-0 14.0-0-0 ed4 15.Nd4 Bf7+=) 13...Kf7 14.d4 ed4 15.Nd4 Nd4 16.ed4 Nd5 17.Nd5 Bd5 18.Rac1 (18.Rfc1!? Bd6 19.h3+=) 18...Ba3–/+ 19.Ba3 Ra3 20.Rb1 Rc8 21.Rfd1 Rc2 22.f3? (22.Bd3 Raa2 23.Rf1 Rd2–+) 22...Raa2 (better is 22...b2 23.Rf1 Rd2–+) 23.Rdc1?? (23.Bf1–+) 23...Rg2 24.Kf1 Raf2 (24...Rh2 25.Rc7 Kg6 26.Bd3 Kh6 27.Be2 Rae2 28.Rb3 Bb3 29.Rc5 Bd1 30.Kg1 Reg2 31.Kf1 Bf3 32.Rh5 Kh5 33.d5 Rh1) 25.Ke1 Rc2 (better is 25...Rf3 26.Bc4 Bc4 27.Rc4 Rg1 28.Ke2 Rb1 29.Rc7 Ke6 30.Kf3 b2 31.Rb7 Rf1 32.Ke3 b1Q 33.Rb1 Rb1–+) 26.Kf1 (26.Rc2 bc2 27.Rc1–+) 26...Rh2 27.Kg1 (27.Ke1 Rh1 28.Bf1 Bc4 29.Rc2 Rf1 (worse is 29...Bf1 30.Rc7 Ke6 31.Kf2+=) 30.Kd2 Rf2 31.Kc3 Rc2 32.Kb4 Bd5 33.Rb3 Bb3 34.Kb3 h5–+) 27...Bf3 (27...Rcg2 28.Kf1 Bf3 29.Rc7 Kg6 30.Rg7 Kg7 31.Ke1 Rh1 32.Bf1 Re2 33.Kd1 Rf1) 28.Rc2 bc2 29.Rc1 (29.Bc4 Kf8 30.Bd3 Rg2 31.Kf1 cb1R 32.Bb1 h5–+) 29...Rh1 (29...Rh1 30.Kf2 Rc1 31.Bc4 Ke7–+) 0–1. Fournier,Frederic – guest3531, Active, 2005.

5.e3 d5 6.Be2 Bd7 (6...Bd6 7.d4=) 7.Bh5 (7.d4 e4+=) 7...Ke7 8.d4 c6 (8...Bb5 9.de5 Nc6 10.ef6 Nf6 11.Bf6 gf6 12.Nc3+-) 9.Nc3 (9.de5!? fe5 10.Be5+-) 9...Be6 10.Nb1 (10.e4+=) 10...Bc8 (10...e4 11.Bc3=) 11.h3 (11.de5 Nd7 12.ef6 Ngf6+-) 11...Be6 (11...e4 12.bc6 Nc6 13.Nd2=) 12.de5+= Qd7 (12...Qa5!? 13.Nd2 Qb5+=) 13.Qf3 Ke8 (13.Nf3 cb5 14.Qd4 Na6+-) 1-0. Pereira – Vintins, internet, 2020.

5.e3 d5 6.Nf3 Bg4 7.Be2 Bf3 (7...Bd6!?=) 8.Bf3+= c6 9.bc6 bc6 10.d3 Bd6 11.Nd2 Ne7 12.0-0 0-0 13.c4 Qc7 14.h3 Nd7 15.cd5 cd5 16.Rc1 Qb8 17.Rb1 Qb3?? Attacking the isolated pawn on a3 (better is 17...Qe8=) 18.Nb3+– ab3 19.Qb3 Nc5 (19...Ra5 20.Bc3 Ra3 21.Bd5 Kh8 22.Qb5 Rc3 23.Qd7+–) 20.Bd5 Kh8 21.Qa2 Nd5 22.Qd5 Rfd8 23.Qc4 Nd3 (23...Na4 24.Bc1+–) 24.Qd3 e4 (24...Ba3 25.Qf5 Be7 26.Rfc1+–) 25.Qe4 (25.Qe4 Re8 26.Qf3+–) 1–0. Fournier,Frederic (1750) – odontorock, Active, 2007.

5.c4 Bb7= 6.d3 Bc5 (6...Nh6 7.e3=) 7.e4 (7.e3 Ne7=) 7...Ne7 8.Nf3 c6 9.bc6 dc6 10.Be2 (10.d4 ed4 11.Bd4 Nd7=) 10...0-0 (10...Ng6 11.d4 ed4 12.Bd4=) 11.0-0 Nd7 (11...Qc7 12.d4 Rd8 13.Qd3=) 12.Nh4 (12.d4 ed4 13.Nd4 Bd4 14.Qd4 Qc7+=) 12...g5 (12...Qc7 13.Bg4=+) 13.Nf5 (13.Nf3 g4 14.Nfd2 f5=) 13...Nf5=+ 14.ef5 Rf7 (14...Nb8 15.Nc3=) 15.Bf3 (15.Re1 Nf8=) 15...Rb8 16.Nd2 b5 (16...Bf8 17.d4=) 17.cb5 cb5 18.Bb7 Rb7 19.Ne4 Qe7 (19...Rb8 20.Rc1 (< 20.Nc5 Nc5 21.d4 Na4–/+) 20...Qe7 21.Nc5 Nc5 22.Qc2=) 20.Qg4 Kh8 (20...b4 21.ab4 ab4 22.Rfc1+=) 21.h4 gh4= 22.Qh4 Rg7 23.g3 Bb6 24.Kg2 Rc7 25.Rac1 Rc1 26.Bc1 Bd4 27.Rh1 Bc5 28.Bh6 Rg8 29.Bc1 Rd8 30.Rd1 Rc8 31.Bb2 Bb6 32.f3 Rc2–/+ 33.Rd2 Rd2 34.Nd2 Qc5 35.Qh1?? Qf2–+ 36.Kh3 Qd2 37.Qc1 Qd3 38.Qc8 Kg7 39.Qc6 Qf1 40.Kg4 h5 41.Kh5 Qh3 0–1. SuperJudge – Brause, ICS rated blitz match, 1995.

5.c4 Bb7 6.e3 d5 7.Nf3 Ne7 8.Qc2 Nd7 9.d4 e4 10.Nfd2 f5 11.c5 Nf6 12.c6 Bc8 13.a4 Be6 14.f4 Ng6 15.Be2 Ng4 16.Bg4 fg4 17.0-0 Bf5 18.Rf2 g3 19.hg3 Bb4 20.Nf1 0-0 (20...Qf6 21.Ba3 Ba3 22.Ra3=+) 21.Qe2 Qd7?? (21...Qf6 22.g4 Bc8 23.Ba3+=) 22.Nc3 (better 22.cd7 Bd7 23.Ba3+-) 22...Qc8? (better 22...Qe6=) 23.Nd5+- Bg4 (23...Be6 24.Nb4 ab4 25.Qd2+-) 24.Qc2 Be6 (24...Bf5 25.Nh2 Bd6 26.g4 Bg4 27.Ng4 Qg4 28.Ba3 Ba3 29.Ra3+-) 25.Nb4 (25.Qe4?! Bf5 26.Nb6 cb6 27.Qd5 Be6+=) 25...ab4 26.Qe4 Re8 (26...Bf5 27.Qd5 Be6+-) 27.f5 Bf7 28.Qc2 (28.fg6?! Re4 29.gh7 Kh7 30.Rf7 Kg8=) 28...Ne7 29.Rd1 (better 29.e4!? Qd8+-) 29...b3 30.Qb1 (30.Qd3 Ra4 31.e4 Qd8+-) 30...Ra4 31.Re1 (31.e4 Bc4+-) 31...Nd5 (31...Bc4 32.e4 Bb5 33.d5+-) 32.e4 Nb4 33.e5 (better 33.d5!?+-) 33...Nc2 34.Rc2 bc2 35.Qc2 Rc4 36.Qd3 (better 36.Qf2 Rf8 37.g4+-) 36...Bd5?? (better 36...Rb4 37.Ba1 Rb3+-) 37.Ne3+- Qd8 (37...Rb4 38.Bc3 Ra4 39.Nd5+-) 38.Nc4 Bc4 (38...Qg5 39.Bc1 Qe7 40.Ne3+-) 39.Qc4 Kh8 40.d5 1-0. snoozer (2505) - universe64 (2255), lichess.org, 2018.

5.c4 Bb7= 6.e3 Bd6=.

5.e3 Bb7 6.c4 c5 7.Nc3+/– Ne7 8.Nf3 d5 9.cd5 Nd5 10.Bc4 Nc3 11.Bc3 (11.dc3?! Qd1 12.Rd1 Nd7=) 11...Nd7 12.Qb3 (12.0-0 Qc7+/–) 12...Qe7 13.d3 (13.0-0 e4 14.Nh4 Ne5 15.Be5 a4+=) 13...0-0-0 14.0-0 Bf3 (14...g5 15.Nd2+/–) 15.gf3 g5 (15...Qd6 16.a4+/–) 16.Be6+– h5 (16...Qd6 17.Kg2+/–) 17.Qd5 Qd6 18.Qc6 Qc7 19.a4 (19.h3 Be7+–) 19...Kb8 20.Bd5 (20.Kg2 Be7 21.Bd5 Qc6 22.bc6 Nf8+/–) 20...Be7?? (better is 20...Qa7+–) 21.Qa8 1–0. Janek – Samotho, internet, 2017.

5.e3 d5 6.Nf3 Bc5 7.c4 Ne7 8.cd5 Nd5 9.Nc3 Nc3 10.Bc3 0-0 (10...Qe7 11.Qa4=) 11.Be2 Be6 12.0-0 c6 13.bc6 Nc6 14.Bb5 Na7 15.Be2 e4 16.Nd4 Bd4 17.Bd4 Nc6 18.Bb2 f5 19.d4 Qg5 Black prepares f4 20.Bb5 Ne7 21.Rc1 (better is 21.Qe2!?=) 21...f4–/+ 22.ef4?? (better is 22.Bc4 Bc4 23.Rc4 fe3 24.Qb3–+) 22...Qf4 (better is 22...Qb5 23.Rc2 Nd5–+) 23.Bc4 White plans d5 23...Bc4 24.Rc4 Nf5 (24...Nd5 25.Qe2+=) 25.Qe2 (25.Qb3 Rf7+=) 25...e3 (25...b5!? 26.Rc6 e3=) 26.d5+= Qg5 27.Rg4 ef2 28.Rf2 Qh6 29.Rf5! Rf5 30.Rg7 Qg7 31.Bg7 Kg7 32.Qe7 (32.Qg4 Kf6 33.Qe4 Rg5 34.Qe6 Kg7+–) 32...Rf7 33.Qg5 Kf8 (33...Kh8 34.Qe5 Kg8 35.d6+–) 34.Qh6 Kg8 35.Qe6 (35.Qb6 Re8 36.Qa5 Rd7+–) 35...Raf8 36.h3 Kg7 (better is 36...Rd8!?+–) 37.Qb6 Rf6 (37...Ra8 38.g3+–) 38.Qc7 Kg6 39.d6 (39.Qa5?! Rd6+–) 39...Rf1 40.Kh2 Kh6 (40...Ra8+–) 41.d7 Rd1 42.Qc6 Kg7 43.Qc3 Kh6 44.Qe3 Kg7 45.Qe7 Kg8 46.Qe6 Kg7 (46...Kh8+–) 47.Qe7 (better is 47.Qg4!? Kf6 48.Qd1 Ke7+–) 47...Kg8 48.Qe6 Kg7 49.Qe7 ½–½. Fournier,Frederic (1910) – chaska (1965), Active, 2005.

5.e4 Bb7 6.Nc3 Bc5 7.Bc4 Nh6 8.Qh5 Kf8 9.Nf3 Qe8 10.Qh4 Qg6 11.0-0 Qg4 12.Qg4 Ng4 13.a4 Nh6 14.Rad1 Nf7 15.d4 ed4 16.Nd4 Ne5 17.Bb3 Bd4 18.Rd4 d6 19.f4 Ng6 20.e5! de5 21.fe5 Ne5 (21...Ke8 22.ef6 gf6+–) 22.Rd8 (22.Rd8 Ke7 23.Rh8+–) 1–0. Szency,Sandor (1935) – Weiss,Frederic, RL–2006–0-00061, 2006.

5.e4 c6 6.d4 ed4 7.Bd4 c5 8.Be3 d6 (8...Bb7!?+=) 9.Bc4+/– Qe7 (9...Ra7!?+/–) 10.Bg8+– Rg8 11.Qd5 Bb7? (better is 11...Qe5 12.Qa8 Qa1 13.Qb8 Qb1 14.Kd2 Kd7 15.Qb6 Ke7 16.Qa7 Bd7+–) 12.Qg8 Qe4 13.Ne2 Qc2 (13...Bd5 14.Qh8 Qc2 15.Nbc3+–) 14.Qe6 Kd8 15.Qf7 Nd7 (15...Be7 16.Qg8 Kc7+–) 16.Nf4 Qb2 (16...Kc7 17.Ne6 Kb8 18.Qd7 Ka7+–) 17.Ne6 Kc8 18.Qe8 1–0. lucya (2140) – thecorm, GameColony.com, 2002.

5.c4 d5= 6.cd5 Qd5 7.Nc3 Qf7 (7...Qd8 8.e4=) 8.e3 Be6 9.Be2 (9.Nf3 Nd7=) 9...Nd7 10.Nf3 (10.Bh5 g6 11.Bf3 Nb6=) 10...Nb6 (10...c4 11.d4 cd3 12.Qd3=) 11.d3 (11.0-0 Rd8=) 11...Nh6 (11...Rd8 12.0-0=) 12.0-0 (12.Ne4 Rd8=) 12...Be7 (12...Rd8 13.Rc1=) 13.Nd2 0-0 14.Bh5 g6 15.Be2 (15.Bf3 Rad8 16.Qc2 Rd7=) 15...Rfd8 16.Na4 (16.Qc2 Nf5=) 16...Na4 (16...Bb3 17.Nb3 Na4 18.Qc2+=) 17.Qa4 b6 18.Rac1 Nf5 19.Nc4 Rab8 20.Rfd1 h5 (20...Bd5 21.Bg4=) 21.Qc2 (21.Bf3 Nd6+=) 21...Bf8 (21...Qe8 22.a4+=) 22.Bc3 (22.Bf3 Nd6+=) 22...Bh6 23.Bd2 Kh7 (23...Nd6 24.a4=) 24.Qb2 (24.Bf3 Nd6+=) 24...Qb7 (24...Nd6 25.Nd6 Rd6 26.Rc3=) 25.h3 (25.Bf3 Qe7+=) 25...Rd7 (25...Bd5 26.Bf1=) 26.Rb1 (26.Bf3 Qc7+=) 26...Rg8 (26...Bd5 27.e4 Bd2 28.ef5+=) 27.Bc3 (27.Bf3 Qc7 28.Qc2 Rgd8+=) 27...Bf7 (27...Nh4 28.Bf1=) 28.Nd2 (28.Bf3 Qc7+=) 28...Bg7 (28...Nd6 29.Bf3 Bd5 30.Ne4=) 29.Rbc1 (29.Bf3 Qc7+=) 29...Qc8 (29...Nd4 30.ed4 cd4 31.Ba5 ba5 32.Bf3+=) 30.Nf3 (30.Nc4 Qc7+=) 30...g5 (30...Qd8 31.d4 e4 32.Nh2 cd4 33.ed4+=) 31.g4 (31.d4!? cd4 32.ed4+=) 31...hg4+= 32.hg4 Ne7 (32...Nh6 33.d4=) 33.d4+= cd4 (33...Rh8 34.Nd2 cd4 35.ed4+=) 34.ed4 e4 The passed pawn on d4 will become decisive later (34...Rc7 35.de5 Qg4 36.Kf1+=) 35.Nd2 Bg6 36.Nf1 (36.Ba5 Qd8 37.Bb4 Nd5+=) 36...Nd5 (36...Qd8 37.Ne3+=) 37.Ne3 (37.Ba5 Qa8 38.Bb4 Nb4 39.ab4 Rh8+=) 37...Nf4 (37...Qb7 38.Bc4 Bf7 39.Nf5=) 38.Rc2 (38.Ba5!? Qd8 39.Bc3+/–) 38...Rh8 (38...Rc7 39.Kf1=) 39.Bc4 Bf8 (39...Qf8 40.Qb3=) 40.Rcd2?? (better is 40.d5!?+/–) 40...Kg7 (40...Rc7 41.Qb3+=) 41.Bf1 (better is 41.d5 Qd8 42.Rc2+=) 41...Qb8 Threatening mate... how? 42.Bg2 (better is 42.Bc4–/+) 42...Ng2–+ 43.Kg2 (43.Nf1 Qf4 44.d5–+) 43...Qh2 44.Kf1 Qh1 45.Ke2 Qf3 46.Ke1 Rh1 47.Nf1 e3 (47...Qg2 48.Ke2 Qg4 49.Ke1 Qh3 50.Rc2 Qf1 51.Kd2 Qd1 52.Ke3 Qd3) 48.Re2 (48.Rd3 ef2 49.Kd2 Qd3 50.Kc1 Rf1 51.Qb3 Rd1 52.Qd1 Qc3 53.Qc2 Qc2) 48...Rf1 0–1. Sviridov,Valentin – Lanc,Alois, Hornicky Kahanec, 1980.

5.e4 b6? 6.Nc3 Ne7 7.Bc4 Bb7 8.Nge2 d5 9.ed5 Nd5 10.0-0 Nc3 11.Nc3 (worse is 11.Bc3 Bd5 12.Bd5 Qd5+/–; 11.dc3?! Qd1 12.Rad1 Nd7+=) 11...Nd7 (11...Qd4 12.d3+–) 12.Qg4 Qe7 13.Nd5 Bd5 14.Bd5 Ra7 (14...0-0-0 15.Bf3 g6 16.Qe4+–) 15.Bc6 h5 16.Qf5 Qf7 (16...Kd8+–) 17.f4 g6 18.Qe4 Bg7 (18...Qe6+–) 19.fe5 f5 20.e6 fe4 21.Rf7 (21.ef7?! Kf8 22.c3 Nf6+–; 21.ed7?! Qd7 22.Bg7 Qc6 23.bc6 Rg7+/–; 21.Bd7?! Rd7 22.ef7 Kf8+=) 21...Bb2 22.Raf1 (22.Rd7?! Rd7 23.ed7 Kd8+/–) 22...Bd4 (22...Kd8 23.ed7 (23.Rd7?! Rd7 24.ed7 Bd4 25.Kh1 Bg7+/–) 23...Ra8 24.Ba8+–) 23.Kh1 Kd8 24.ed7 (24.ed7 Ra8 25.Ba8+–; 24.Rd7?! Rd7 25.ed7 Bg7+/–) 1–0. Valenta,Vit jr (2140) – Skaloud,Dusan (1950), 26th Czech Rapid G1, 2015.

5.e4 d5+=.

5.e4 d6!?+/–.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 Ne7 8.Nc3 0-0 9.Rd1 d6 10.b6 cb6 11.Qd6 Qd6 12.Rd6 Nbc6 13.e4 f5 14.f3 fe4 15.fe4 Bg4 16.h3 Bh5 17.Bc4 Kh8 18.Bd3 Rae8 19.g4 Bg6 20.Rd7 Nc8 21.Nge2 Ne5 22.Rb7 (22…Rf3 23.Bb5+/–). kamret (2225) – michaelalan (2055), GameColony.com, 2003.

5.e3 c6 6.Nf3 (6.d4 Be7 7.de5 d6 8.ed6 Bd6+/–) 6...cb5 (6...Bf8 7.d4 e4 8.Nfd2+=) 7.Bb5+/– Qb6 8.a4 Ne7 9.Nc3 0-0 10.Rb1 Bb4 11.0-0 d6 (11...d5 12.Ne1=) 12.Qe2 (12.Ba3 Nbc6+=) 12...Be6= 13.d4 Bd7 (13...Rc8 14.de5 Bc3 15.Bc3 Rc3 16.ef6 gf6 17.Nd4=) 14.de5 de5 15.Rfd1 Bb5 16.Nb5 Nec6 17.c3 Bc5 18.Ba3 Rd8?? (better is 18...Ba3 19.Qa2 Kh8 20.Qa3 Na6+/–) 19.Rd8 (better is 19.Qc4 Kh8 20.Bc5 Qa6+–) 19...Qd8 (19...Nd8 20.Qc4 Kh8 21.Bc5+–) 20.Bc5 Nd7 (20...Qd7 21.Nd6 Qe6 22.Rb7+–) 21.Rd1 (21.Qa2 Kh8 22.Nd6 Qg8 23.Nf7 Qf7 24.Qf7 Nc5+–) 21...b6 (21...Nc5 22.Qc4 Kh8 23.Rd8 Rd8 24.Kf1+–) 22.Ba3 (22.Qc4 Kh8 23.Nd6 Qe7 24.Nf7 Qf7 25.Qf7 Nc5+–) 22...Qe8 (22...Kh8 23.Qc4 e4+–) 23.Qc4 Kh8 24.Qc6 Rc8 25.Qd7 Qd7 26.Rd7 h6 27.h3 g5 28.Nd2 h5 29.Ne4 h4 30.Nf6 Rc3 1–0. Fournier,Frederic – zzoroo, Chess.com (3+0), 2013.

5.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 a5 5.b5 Bc5).

5.e3 d6 6.Qh5 g6 7.Qd1 Be6 8.Nf3 Nd7 9.d4 Bb6 10.Be2 Ne7 11.0-0 0-0 12.Nbd2 c6 13.c4 Nf5 14.a4 Ng7 15.Ne4 d5 16.cd5 cd5 17.Nd6 (17.Nc3!?+=) 17...e4 18.Nd2 Qb8 19.Ba3 Rd8 20.N6e4 de4 21.Ne4 Nf5 (21...Bc7 22.Ng3–/+) 22.Rc1 Bd5 23.Nc3 Bf7 24.h3 Ng7 (24...Bc7 25.Bg4+=) 25.Ne4 Ne8 26.Bc4 1–0. GuestRSYN – josephasiah, freechess.org, 2017.

5.e3 Ne7 6.c4 d5 7.Nf3 Be6 8.Qc1 Nd7 (8...e4 9.cd5 Bd5 10.Qc5 ef3 11.gf3=) 9.d4+= ed4 10.ed4 Ba7 11.c5 c6 12.b6 Bb8 13.Bd3 0-0 14.Nbd2 Nf5 (14...Bf5!? 15.Bf5 Nf5+=) 15.Qc2 g6 16.0-0-0 (16.0-0 Bf4+/-) 16...Nb6 (16...Bf4!?+=) 17.Rhe1 Qd7? (17...Ng7 18.cb6 Bf4 19.g3+/-) 18.g4 (better 18.cb6 Bf4 19.g3+-) 18...Ng7 19.Bg6?? (better 19.cb6 Bg4 20.a4+=) 19...hg6=+ (19...Bg4? 20.Bh7 (20.cb6 hg6 21.Qg6 Bf4-/+) 20...Kh8 21.Nh4+-) 20.Qg6? (better 20.cb6 Bg4 21.Qg6-/+) 20...Nc4 21.Nc4 dc4 22.g5? (better 22.h3-+) 22...Bf4 23.Nd2 (23.Rd2 Bf5 24.Qh6 Rae8-+) 23...Bg5 (23...Bf5 24.Qf6 Rf6 25.gf6-+) 24.h4 (24.Qc2 Bg4-+) 24...Bd2 (better 24...Bf5 25.Qg7 Qg7 26.hg5 fg5-+) 25.Rd2 Qf7 26.Qg2 c3! 27.Bc3 Bb3 28.Rb2 (28.Qg3 Kh8-/+) 28...Qc4 (28...Rfe8 29.Rg1 Bd5 30.Qg3-+) 29.Re3 (29.Qg3!?-/+) 29...a4 (29...Rfe8 30.Kd2-+) 30.h5-/+ (30.h5 Qd5 31.Qd5 cd5 32.Rh3-+). danishguy (2045) - A_Blinchevsky (2085), Rated Bullet game, lichess.org, 2020.

5.e3 Ne7 6.d4+/– ed4? (better is 6...Bd6+/–) 7.Qh5+– Ng6 8.Qc5 de3 9.Qe3 Kf7 10.Qd2 d6 11.Nf3 Re8 12.Be2 Qe7 13.Nc3 Bg4 14.0-0 Nd7 15.Ng5! fg5 16.Bg4 Nde5 17.Nd5 Qd8 18.Qd4 Nf4 (18...c5 19.Qe4+–) 19.Nf4 gf4 20.Qf4 Kg8 21.Rfe1 Ng4 22.Qg4 Re1 (22...Re7+–) 23.Re1 Qf8 24.Qd7. Fournier,Frederic (1770) – shalw (1770), rated blitz game (2/12), 2002.

5.e3 g6 6.Bc4 d5= 7.Ba2 Ne7 8.f4 (8.d4!? ed4 9.Bd4=) 8...ef4+= 9.Bf6 0-0 10.Be7 Qe7 11.Bd5 Kh8 12.Nf3 fe3 13.d4 Bd6 14.Qe2 c6 15.bc6 bc6 16.Bb3 (16.Bc4 Nd7 17.0-0 Nb6+=) 16...c5 (16...Bg4 17.0-0–/+) 17.dc5 Be5 18.Ra2 Ba6 19.c4 (19.Qe3?? Bg3 20.Kd2 Bf4 21.Qf4 Rf4–+) 19...a4 (19...Bg7 20.0-0+=) 20.Ba4= Qc5 21.Bb3 (worse is 21.Ne5 Qa5 22.Kd1 Rf2–/+ (22...Qa4 23.Qc2 Qa5 24.Ng4 Rd8 25.Kc1=)) 21...Qa5 22.Kd1 Rd8 23.Kc1 Nc6 24.Qe3 Bg7 25.Re2 Rab8 26.Rd1 (26.Rhe1 Qc7 27.Ba2 Nd4 28.Nd4 Bd4=) 26...Rd1 27.Kd1 Bc4 28.Bc4 Rb1 29.Kc2 Rb2 30.Kd1 Qa4 (30...Rb1 31.Kc2 Rb2 32.Kd1 Rb1=) 31.Bb3 (31.Ke1 Qc4 32.Qe8 Qg8 33.Qc6 Re2 34.Ke2 Qa2 35.Nd2 Qa3=) 31...Re2 (31...Rb1 32.Kc2 Rb2 33.Kd1 Rb1 34.Kc2 Rb2 35.Kd1=) 32.Ke2+= (32.Ba4? Re3 33.Bc6 Rc3–+) 32...Qa3 33.Qe8 Bf8 34.Qf7 Qe7 35.Qe7 Be7 36.Ke3 Kg7 37.Ke4 h5 38.Ba4 Nb4 39.Be8 Bd6 (39...h4!?=) 40.g3+= Na2 (40...Kf6 41.Nh4+/–) 41.Nh4+/– Nc3 42.Kd3 Nd1 43.Kd4 Ba3 (43...Kf6 44.Bg6 Be5 45.Ke4 Nf2 46.Kf3+/–) 44.Ng6 Bb2 45.Kd3 Nf2 46.Kc2 Ba3 47.Nf4 h4 48.gh4 Bd6 49.Nd3 Ng4 50.h3 Nf6 51.Bc6 Bg3 52.Kd2 Kh6 53.Bf3 Bh4 54.Ke3 Bg3 55.Kd4 Kg5 56.Bg4 (better is 56.Nb2!?+/–) 56...Ng4= 57.hg4 Kg4 ½–½. mtrc – Caissa, internet, 2002.

5.e3 g6 6.d4 ed4 7.ed4 Qe7 8.Be2 Bd6 9.Nf3 Nh6 10.0-0 Qe6 11.Nbd2 Qf5 (11...Be7 12.Re1+/–) 12.Bd3+– Qh5 13.Re1 Kd8 14.Nc4 (14.Ne4 Rf8+–) 14...Qb5 (better is 14...Be7+–) 15.Qd2 g5 (15...Qh5 16.Nd6 cd6+–) 16.Nd6 Qb6 (16...Qd5 17.Ne4 Rf8+–) 17.Nc4 Qb5 (17...Qa7 18.d5 Ng4+–) 18.Qe2 Nc6 19.Nd6! cd6 (19...cd6 20.Bb5 Discovered attack) 20.Bb5 Kc7 21.Qc4 g4 22.Nd2 Kd8 23.Qd5 g3 24.fg3 Ng4 25.Qf7 Na7 26.Be2 h5 27.Bg4 Kc7 28.Bf3 Rb8 29.d5 (better is 29.Qf6 h4+–) 29...b5 30.Bf6 Bb7 31.Bh8 Rh8 32.a4 Rb8 33.ab5 Nb5 34.Qg7 Ra8 35.Reb1 Ba6 36.Ra5 h4 37.Bg4 Kb6 (37...Kc8 38.Qd7 Kb8 39.Rab5 Bb5 40.Rb5) 38.Bd7 (38.Qd7 Ka5 39.Nc4 Ka4 40.c3 hg3 41.Rb4) 38...hg3 (38...Rc8 39.Ra6! Ka6 40.Bb5 Kb6 41.Bc6 Kc5 42.Qc3) 39.Rab5 Bb5 40.Rb5 Kc7 41.Bc6 Kd8 42.Qd7 1–0. mtrc – Caissa, internet, 2002.

5.e3 g6 6.d4 ed4 7.ed4 Qe7 8.Ne2 (8.Be2 Bb6+/–) 8...Bd6+= 9.Nbc3 b6 10.Nd5 Qe6 11.c4 Bb7 12.Ne3 Nh6 13.d5 Qf7 14.Qd4 Be5 15.Qe4 0-0 16.0-0-0 Qe7 17.Qh4 Nf7 18.Kb1 Re8 19.Be5 Ne5 20.d6 cd6 21.Nc3 Qe6 22.Bd3 (22.Qd4 d5 23.Ncd5 Bd5 24.Nd5 Ra7+–) 22...Nd3+= 23.Rd3 Ra7 (23...Kg7 24.Qd4+/–) 24.Rhd1 g5 (24...d5 25.Ned5 Bd5 26.Nd5+– (26.cd5?! Qf5+/–)) 25.Qh6 (25.Qd4 Ba8+–) 25...Qf7 (25...Rf8!?+/–) 26.Rd6 Re6 27.Ng4 Bg2 (27...Rd6 28.Rd6 Bg2 29.Rf6 Qe8 30.Qg5 Kh8+–) 28.Nf6 Qf6 29.Qf6 Rf6 30.Rf6 d5 31.Rg1 (31.Rb6 Nd7 32.Rd6 Nc5+–) 31...Nd7 32.Rc6 (32.Rg2?! Nf6 33.Rg5 Kf7 34.Nd5 Nd5 35.cd5 Re7+–) 32...d4 33.Rg2 dc3 34.Rg5 Kf7 35.Kc2 Ra8 36.Rh5 Rh8 37.Kc3 Ke7 (37...Kg7 38.Rd5 Nc5 39.Kd4+–) 38.Rch6 Rc8 (38...Nc5+–) 39.Rh7 Ke6 40.R5h6 Nf6 41.Rb7 Rf8 42.Rb6 Kd7 43.Rbf6 Re8 44.b6 Re7 45.Rf8 Re1 46.Ra8 Rc1 47.Kd2 Re1 (47...Rc4 48.Ra7 Rc7 49.Rc7 Kd8 50.Rh8) 48.Ke1 a4 49.Ra7 Kd8 (49...Kc8 50.Rh8) 50.Rh8 1–0. mtrc – Caissa, internet, 2002.

5.e3 g6 6.d4 ed4 7.Bd4 Bd4 8.Qd4 Qe7 (8...d6 9.Nf3+=) 9.Nc3+/– c5 (9...c6 10.Na4 cb5 11.Nb6+/–) 10.Qd5 Qe5 (10...f5 11.Na4 d6 12.Nb6+/–) 11.Qe5+– fe5 12.Nf3 Ne7 (12...d6 13.Rd1 Nd7 14.Ne4+–) 13.Rd1 0-0 (13...d6 14.Rd6 Nf5 15.Rf6+–) 14.Ne5 Rf6 (14...Kg7 15.Ne4+–) 15.Ne4 Rf5 16.Nc4 d5 17.Nb6 Ra7 18.Nc5 Kg7 19.Be2 (worse is 19.Nc8 Nc8 20.Ne6 Kf7+–) 19...Re5 20.g4 (worse is 20.Nc8 Nc8 21.Rd4 b6+–) 20...h6 21.Rg1 (21.Nc8?! Nc8 22.Nd3 Re8+–) 21...Kf6 (21...Kf7 22.Rg3 (worse is 22.Nc8 Nc8 23.Nd3 Re8+–) 22...a4 23.f4+–) 22.Rg3 (worse is 22.Nc8 Nc8 23.Nd3 Re4+–) 22...g5 (22...a4 23.f4 Re6 24.g5 Kf7 25.Nc8 Nc8 26.Ne6 Ke6 27.gh6+–) 23.f4 gf4 24.ef4 Re2 25.Ke2 Be6 (25...Kf7 26.f5 a4 27.Re3+–) 26.Ne6 Ke6 27.Re3 Kf7 28.Re7! Ke7 29.Nc8 Ke6 30.f5 Ke5 31.Na7 Nd7 32.Kf3 Nc5 33.Nc8 d4 (33...a4 34.Re1 Ne4 35.c4 dc4 36.Re4 Kf6 37.Rc4+–) 34.Nb6 a4 35.h4 h5 36.gh5 Kf5 37.Rd4 Ne6 38.Rd7 Kf6 39.h6 Nf8 40.Rg7 Ng6 41.Nd5 Kf5 42.Ne7 Ne7 43.Re7 Kf6 44.Rb7 Ke5 45.h7 Kd4 46.h8Q Kd5 47.Rd7 (47.h5 Ke6 48.Ke4 Kd6 49.Qe5) 47...Ke6 (47...Kc5 48.Qd4 Kb5 49.c4 Kc6 50.Qd6) 48.Qd4 (48.Qe8 Kf6 49.Qf7 Ke5 50.Rd5) 48...Kf5 49.Qf4 Ke6 50.Rd6 (50.Qd6 Kf5 51.Rf7) 50...Ke7 51.Qf6 Ke8 52.Rd8 1–0. mtre – Caissa, internet, 2002.

5.e4 d5 6.ed5 Qd5 7.Nc3 =.

5.e4 d6 6.Nf3 Be6 7.d4 ed4 8.Nd4 Bf7 9.Qg4 g6 10.Bd3 Ne7 11.Ne6 Be6 12.Qe6 Nd7 13.0-0 Rf8 14.Qh3 h5 15.Nc3 Ne5 16.Na4 Qd7 17.Qh4 0-0-0 18.Nc5 dc5 19.Rad1 c4 20.Bc4 Qd1 21.Rd1 Rd1 22.Bf1 g5?? 23.Qh5+– Rfd8 24.Be5 1–0. b4_player (2250) – spleen74 (1870), GameColony.com, 2003. .

6.d4 Bd6 7.a4 Ne7 8.Ba3 Ba3 9.Na3 0-0 10.g3 Bf5 11.Bh3 Bh3 12.Nh3 c6 13.Qb3 Qc8 14.Ng1 Nd7 15.Rd1 Kh8 16.g4 cb5 17.Nb5 Ra6 18.f3 Nb6 19.e3 Nc4–+ 20.Kf2 e4 21.h3 f5–+ 22.g5 f4 23.ef4 Qf5 24.Qc2?? e3 25.Kg3 Qc2 26.Ra1 Nf5 27.Kg4 Qg2 28.Kh5 g6# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

6.d4 Bd6 7.c4 dc4 8.e4 ed4 9.Qd4 Qe7 =.

6.d4 Bd6 7.e3 Be6=+ 8.a4 Ne7 9.g4 0-0–/+ 10.Ba3 Ba3 11.Na3 Nd7 12.c4 ed4 13.ed4 Ng6 14.h4 Qe7–+ 15.Nc2 Bg4 16.Be2 dc4 17.Kf1 Be6 18.d5 Bf7 19.Bc4 Qe4 20.Rh3 Qc4 21.Qd3 Bd5 22.Qc4 Bc4 23.Ne2 Be2 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

6.d4 Bd6 7.de5 Be5 8.Nf3 Bg4 =.

6.e3 Ne7 7.f3 0-0 8.g4 Be6 9.h4 Nd7 10.h5 e4 11.Bg2 Ne5–+ 12.Kf1 ef3 13.Bf3 Nf3 14.Qf3 Qd7 15.Qg3?? Qb5 16.Ne2 Qb2 17.Qc7 Rfc8 18.Qf4 Qa1 19.Kg2 Ra6 20.h6 Rb6 21.hg7 Rb1 22.Rb1 Qb1 23.Qf6 Bg4 24.Kf2 Qd3 25.Nf4 Qd2 26.Kg3 Bd7 27.a4 Nf5 28.Kf3 Qe3 29.Kg2 Qf2 30.Kh3 Qg3# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004. .

6.e3 0-0 7.Nc3 d6 8.d4 ed4 9.ed4 Bb6 10.Nf3 Re8 11.Be2 Ng6 12.0-0 Nf4 13.Re1 Bg4 14.Qd2 Ne2 15.Re2 Re2 16.Ne2 Bf3= 17.gf3 c6 18.a4 Nd7 19.Ng3 d5 20.c5 Bc7 21.b6 Bb8 22.Re1 Nf8 23.Qe3 Qc8 24.Kg2 Ng6 25.Qe8 Qe8 26.Re8 Kf7 27.Rc8 Nh4 28.Kf1 Nf3 29.Nf5+= Nd2 30.Ke2 Nc4 31.Ba1 g6 32.Nd6 Nd6 33.cd6 Ke6 34.Rh8 h5 35.Bc3 g5 36.h4 gh4=+ 37.Bd2 h3 38.Kf3 h2 39.Kg2 h4 40.Bf4+= Bd6 41.Ra8 Bf4 42.Ra7 c5–/+ 43.dc5 d4 44.c6 bc6 45.Ra8 h3 46.Kh1=+ c5 47.Rd8 Ke7?? 48.Rd5+– Ke6 49.Rc5 Kd7 50.Ra5 Be5 51.Rb5 d3 52.Rb1 d2 53.a5 Kc8 54.a6 Kb8 55.a7 Kb7 56.Rd1 Bd4 57.Rd2 Bb6 58.Rd7 Ka8 59.Kh2 Bf2+/– 60.Rf7 Ba7 61.Kh3 Bd4 62.Kg4 Kb8 63.Kf5 Kc8 64.Ke6 Be5 65.Rf6 Bf6= ½–½. companula – Caissa, Live Game Caissa's Web, 2005.

6.e3 0-0 7.d4 ed4 8.ed4 Ba7 9.Bd3 d5 10.c5 g6 11.Ne2 b6 12.c6 Re8 13.0-0 Bg4 14.Re1 Qd6 15.Nbc3 Kh8 16.Qd2 Bf5 (16...Be2 17.Ne2 a4+–) 17.Nf4 Bd3 (17...Nbc6 18.bc6 Bd3 19.Re6+– (19.Qd3 Qf4 20.Re6 Nf5 21.Nd5 Qh4 22.Nc7 Re6 23.Ne6 b5+–; 19.Nd3?! Qc6 20.a4 Qd7+–)) 18.Re6 (18.Nd3?! Nbc6 19.bc6 Qc6+–) 18...Qd8 19.Qd3 Rf8 (19...Kg7 20.Rae1 Nd7 21.Ncd5+–) 20.Rae1 (20.Rae1 Nf5 21.Qh3+–) 1–0. orane – Caissa, internet, 2003.

6.e3 0-0 7.d4 ed4 8.ed4 Ba7 9.Qf3 d5 10.Bd3 dc4 11.Bc4 Kh8 12.Ne2 c6 (12...Nf5 13.0-0+=) 13.Nbc3 Nf5 14.Rd1 Re8 15.0-0 Bb6 (15...Re7 16.Qf4+/–) 16.d5 Ne3 (better is 16...cb5 17.Bb5 Bd7+/–) 17.dc6+– (< 17.fe3 Re3 18.Qf2 Re2 19.Be2 Bf2 20.Rf2 cb5 21.Nb5 Na6=+) 17...Nd1 (17...Qc7 18.fe3 Re3 19.Qd5+–) 18.Rd1 (< 18.Nd1 bc6 19.Ndc3 Qd7=+) 18...Qe7 (18...Nd7 19.cd7 Bd7+–) 19.Nd5 Qd6 20.Nef4 Qc5 (20...Bf2 21.Qf2 Bg4 22.cb7 Ra7+–) 21.Nf6! Re7 22.cb7 Rb7 23.Qe4 Qf2 24.Kh1 Qg2 25.Ng2 gf6 26.Bf6 Rg7 27.Qe8 1–0. orane – Caissa, internet, 2003.

6.e4 0-0 7.h4 d6=+ 8.g3 f5–/+ 9.f3 fe4–+ 10.fe4?? Bf2 11.Ke2 Bg4 12.Kd3 Bd1 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

6.g3 0-0 7.Bg2 d5 8.cd5 Qd6 9.Nc3 Qb6 10.e3+= Bd7 11.a4 Rd8 12.Nge2 Bf5 13.d4 ed4 14.ed4 Bd6= 15.0-0 Nd7 16.Qd2 Re8 17.Nf4 g5 18.Ne6+/– Bb4 19.Ng5?? fg5–/+ 20.Qg5 Bg6 21.d6 Bc3 22.Bc3+= cd6 23.Rae1 Nf5 24.h4+/– Re1 25.Re1 Qc7 26.Ba1 Qc4?? 27.h5+– Qb4 28.Rf1 Rf8 29.hg6 h6 30.Bd5 Kg7 31.Qc1 Qa4 32.Bb7 Kg6 33.Bc6 Nf6 34.b6 Qb4 35.b7 d5 36.Qc2 Rg8? 37.Rb1 Qd6 38.Qc5 Qe6 39.b8Q?? Rb8= 40.Rb8 Qe1 41.Kg2 Qe4 42.Kg1 Qe1= 43.Kg2 Qe4 44.Kg1 Qe1= ½–½. companula – Caissa, Live Game Caissa's Web, 2005.

8.Qc4 d5 9.Qb3 Nd7 10.e3 0-0 11.Nd2 Nc5 12.Qa2 c6 13.a4 Bf5 14.c4 d4 15.Ngf3 de3 16.fe3 b6 17.Nd4 Qd6 18.Nf5 Nf5–+ 19.Qa3 Ne3+/– 20.Qc3?? Rfe8 21.Be2 Rad8 22.Ra2 Qf4 23.g3 Ng2 24.Kd1 Qe4 25.Rg1 Qb1 26.Qc1 Rd2! 27.Kd2 Rd8 28.Kc3 Qb3 (28...Ne4) 0–1. TheFuehrer – Caissa, Live Game Caissa's Web, 2004.

8.Qc4 d5 9.Qh4 0-0 10.g4 Qd6–/+ 11.c3 Qf4 12.e3? Qe4–+ 13.f3 Qc2 14.c4? Qc1 (15.Ke2 Qb2 16.Kd1 Qa1–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

8.e3 0-0 9.Bc4 d5= 10.Ba2 c6 11.a4 Nf5 12.Qd3 Kh8 13.c4 d4 14.e4 Re8 15.Ne2 Nd6 16.Qd4 Re4 17.Qd3 b6 18.f3 Re7 19.g4 Qd7 20.Nbc3= Nf7 21.Qd7+= Bd7 22.Kf2 f5 23.h3 Ne5 24.Rhe1?? Nd3–/+ 25.Kf1 Re3 26.Red1 Rf3 27.Kg2 fg4 28.hg4 Ne5 29.Rab1 Re3 30.Rb2 g5 31.Rbd2 Bg4–+ 32.Rd8 Kg7 33.Kf2 Rh3 34.Ne4?? Rh2 35.Kg3 Re2 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

8.e3 d6 9.Nf3 =.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2 Re8 16.Qg4 b6 17.Nef4 Re5 18.0-0 Qd7 19.c4 Ne7 20.Qe2 Qe8 21.Rfe1 Nd5 22.cd5 Nd7 23.Qf3 Nc5 24.Rb1 g5 25.Ne2+/– Qf7 26.Red1 Ra8 27.Rd4 Rae8 28.Ng3 Qg6 29.Re1 Nb3 30.Rdd1 Nc5 31.Qe2 f5 32.Nf1 Qf7 33.Qc4 f4 34.Qd4 fe3 35.Ne3+/– Qf4 36.Qb2 Kg8 37.Re2 Rf8 38.Rd4 Re4+= 39.Re4 Qe4 40.Rd2 Rf7 41.Rd4 Qe5= 42.Rd2 Qf4 43.Re2 Nd3 44.Qd2 Qd4 45.g3 Ne5 46.Qd4 Nf3 47.Kg2 Nd4 48.Rb2 Kg7 49.h3 Kf6 50.Ng4 Kg6 51.a4 h5 52.Ne3 Re7 53.Ra2 Kf6 54.Rd2 Nb3 55.Rc2 Ke5 56.Re2 Rf7=+ 57.Rb2 Nc5–/+ 58.Ra2 h4 59.f3 hg3 60.Ra1 Rf4–+ 61.Kg3 Ra4 62.Re1 Nd3 63.Rd1 Rd4 0–1. orane (1945) – Caissa (1790), Live Game Caissa's Web, 2003.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2 Re8 16.Qg4 Re5 17.Ng3 c6 18.Nb6 Qe6 19.Nf5 Rf5 +–.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2 Re8 16.Qg4 Re5 17.Ng3 Ne7 18.Qc8 Nc8 19.f4 Rd5 20.Rd5 Nb6 21.Rd4 +–.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2+– Re8 16.Qg4 Re5 17.Ng3 Ne7 18.Qc8 Nc8 19.f4 Re6 20.Nc7 Re3 21.Kd2 Re7 22.Nd5 Rd7 23.f5 Rd8 24.Ne4 Re8 25.Rhe1 Re5 26.c4 Nd7 27.g4 Ra8 28.Kc3 b6 29.h3 Ra7 30.a4 Ra8 31.h4 Rb8 32.h5 h6 33.Nf4 Re8 34.Ne6 Re7 35.Nd6 Ne5 36.c5 Ng4 37.Nc4 Re8 38.c6 Nf2 39.Rd2 Nh3 40.c7 Rb7 41.Rd8 Rg8 42.Rg8 Kg8 43.Rd1 Nf4 44.Rd8 Kf7 45.Nf4 Rc7 46.Ng6 Rc4 47.Kd3 Rc3 48.Kc3 Ne7 49.Rf8# 1–0. orane – Caissa, 2003.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2 Re8 16.Qg4 Re5 17.Ng3 Ne7 18.Qc8 Nc8 19.f4 Re6 20.Nc7 Re3 21.Kf2 b6 22.Ke3 Rc7 23.Nf5 Rc2 24.Rhe1 +– (< 24.Nd6 Ne7+–).

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2 Re8 16.Qg4 Re5 17.Ng3 Ne7 18.Qc8 Nc8 19.f4 Re6 20.Nc7 Re3 21.Kf2 Re7 22.Rhe1 Nc6 23.Nf5 b6 24.bc6 Rac7 25.Ne7 h5 26.Nc8 Rc8 27.Rd6 Kg8 28.Re8! Re8 29.c7 Kf7 30.Rd8 Re4 31.c8Q Rf4 32.Ke3 Rh4 33.Rd7 Kg6 34.Qe8 Kh6 35.Qh8 Kg5 36.Qg7 Kf5 37.Rd5 Ke6 38.Qd7# 1–0. orane (1920) – Caissa (1810), Live Game Caissa's Web, 2003.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 Ra7 15.Ne2+– Re8 16.Qg4 Re5 17.Ng3 Ne7 18.Qc8 Nc8 19.f4 Re6 20.Nc7 Re7 21.Nd5 Rf7 22.e4 +–.

9.Rd1 Kh8 10.e3 d6 11.Bd3 Bf5 12.Bf5 Nf5 13.Qe4 Qc8 14.Nd5 g6 15.h4 +/–.

10.Bc4 Ng6 11.Nge2 Ne5 12.Ba2 d6 13.f4 Ng6 14.0-0-0 Nd7 15.h4 Nc5 16.h5 Ne7 17.f5 Qd7 18.h6 g6 19.g4 a4 20.g5 gf5 21.gf6 Ng6 22.f7 Ne5 23.Rhg1 Ne6? 24.Rg8! Rg8 25.fg8R Kg8 26.Qg1 Kf8 27.Be6 Qe6 28.Qg7 Ke8 29.Nd5 Kd8 30.Qf8 Qe8 31.Qf6 (31.Qf6 Kd7 32.Nb6 cb6 33.Qd6#) 1–0. mukachewo – marekt, gameknot.com, 2001.

10.Bc4 Ng6 11.g3 Ne5 12.Ba2 Qe7 13.a4 Qa3 14.Rb1 d6 15.f4 Nf7 16.Kd2 c6 17.Rb3+/– Qc5 18.Qc5 dc5 19.Ke3 Nd6 20.Rb1 Rd8 21.Nge2 Bg4 22.Rhe1 Re8 23.Rbd1 Ne4 24.Ne4+/– f5 (25.Be6 Be2 26.Re2 fe4+/–). holmwood – Caissa, Live Game Caissa's Web, 2004.

10.Rd1 d6 11.Bc4 Nd7 12.f4 Nb6 13.Ba2 Bg4 14.Rd2 f5 15.e5 de5 16.fe5 Qd4 17.Rd4 c5 18.Rd6 Nec8 19.Rd2 Re8 20.e6 f4 21.h3 Be6–/+ 22.Be6 Re6 23.Re2 Re3 24.Re3 fe3 25.Nge2 Nc4 26.a4 N8d6 27.g4 Rf8 28.Rf1 Rf1 29.Kf1 Na3 30.b6 Nc2 31.Nb5?? Nb5 32.ab5 a4 33.Nc3 a3 34.Ke2 c4 35.h4 Kg8 36.g5 Kf7 37.h5 Ke6 38.Kd1 Nb4 39.h6 gh6 40.gh6 a2 41.Na2 Na2 42.Ke2 c3 43.Ke3 c2 44.Ke4 c1Q 45.Kf3 Qh6 46.Ke4 Qg5 47.Kd4 h5 48.Kc4 Qd5# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Nd5 Nd5 11.Qd5 Re8 12.f4 c6=+ 13.bc6 bc6 14.Qc4 d5–+ (15.Qc5 Re4 16.Ne2 Ba6–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Ba2 de4= 12.Qd8 Rd8 13.Ne4 c6 14.a4 Bf5–/+ 15.f3 Be4 16.fe4 Nd7 17.Ne2 cb5 18.ab5=+ Nc5 19.Nc3 a4 20.Rd1 a3 21.Rd8 Rd8 22.Ke2 Ng6 23.g3 Ne5 24.Rd1 Rc8 25.h3 g6 26.g4 Ne6 27.Kd2? Nd4 28.Kc1 Nef3 29.Bd5 Rc3 30.Bb7 Rc2 31.Kb1 a2 32.Ka1 Nb3# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Ba2 de4= 12.Qd8 Rd8 13.Ne4 c6 14.c4!? =.

11.Ba2 de4= 12.Qd8 Rd8 13.Ne4 c6 14.bc6 Nbc6=+ 15.Rd1 Rd1 16.Kd1 Bf5 17.Nc5 Rd8 18.Kc1 b6 19.Nb7? Rd7–+ 20.Na5 ba5 21.Ne2 h6 22.Rd1 Rb7 23.Bd5? Nd5 24.Rd5 Be4 (25.Rd6 Bg2–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.Ne4 Qf4 15.Rd1 Qe4?! 16.Qe4 Be4 17.d6 cd6 18.Rd6 –+.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.Ne4 Qf4 15.Rd1 Be4 =.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.Ne4 Qf4 15.Ne2 Qe4 –+.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.Nf3 Ne5 15.Ne5 fe5 +=.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.bc6 Nc6 16.Qd2 Rae8 17.Nge2 Nb4 +=.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.bc6 Nc6 16.Qe3 –+.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.Qd2 Nb6= 16.Ba2 Rad8 17.Nge2 Rfe8 18.h3 Ned5=+ 19.Nd5 Nd5 20.Bd5 Qd5 21.Qd5 Rd5 22.Rf1 Rd4 23.g4 Rde4 24.Rf2 Be6 25.Rd1 Ra4–/+ 26.f5 Bc4 27.b6 Ra2–+ 28.Rc1 Rb2 29.Kd2 Rb6 30.Re1 Rd6 31.Kc3 b5 32.h4 Rd7 33.g5 Re3 34.Kb2 Rde7 35.gf6 gf6 36.h5 a4 37.h6 a3 38.Ka1 Re2 39.Rfe2 Re2 40.Re2 Be2 41.c3 Bc4 42.Kb1 Bb3 43.Kc1 c4 44.Kb1 b4! 45.cb4 c3 46.b5 a2 47.Ka1 c2 48.Kb2 a1Q! 49.Kb3 c1Q 50.b6 Qcc3# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.Qd2 Nb6 16.Ba2 Rad8 17.h3 Nbd5 18.Nd5 Nd5 19.Bd5 Qd5 20.Qd5 Rfe8 21.Kf2 Rd5 22.c4 Rd2–/+ 23.Kg3 Ra2 24.Nf3 Ree2 25.Nh4 Ra3 26.Kh2 Rh3–+ 27.Kg1 Rh1 28.Kh1 Bc2 29.Nf5?? Bf5 (30.Rd1 Kg8 31.Rd8 Kf7–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.Qd2 Nb6 16.Ba2 Rad8 17.h3 Nbd5 18.Nd5 Nd5 19.Bd5 Qd5 20.Qd5 Rfe8 21.Kf2 Rd5 22.Nf3 Rdd8 23.Rhe1 Re1 24.Ke1 Kg8 25.g4 Be4 26.Nd2 Rd4 27.Ne4? Re4–+ 28.Kd2 Rf4 29.c4 Rf2 30.Ke3–/+ Rh2 31.Kf4 Rh3 32.Rd1 Rc3 33.g5? Rc4 34.Kf5 Rd4 35.Rc1 Rd5 36.Ke6 Rg5 37.Kd6 Kf7 38.Rc5 Rc5 39.Kc5 h5 40.Kb6 h4 41.Kb7 h3 42.b6 h2 43.Ka6 h1Q 44.b7 Qh2 45.Ka7 g5 46.b8Q Qb8 47.Kb8 f5 48.Kb7 f4 49.Ka6 f3 50.Ka5 g4 51.Kb5 g3 52.a5 g2 53.a6 g1Q 54.Kc6 f2 55.a7 f1Q 56.a8Q Qc4 57.Kb7 Qb1 58.Ka7 Qa4# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 c5 15.Qd2 Nb6 16.h3?? Nc4 –+ (17.Qd1 Ne3–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.ed5 Bf5 12.Rc1 Qd6 13.a4 Nd7 14.f4 Rae8 15.Nge2 =.

11.ed5!? Bf5 12.Bd3 +/–.

11.ed5!? Nf5 12.Qf4 +/–.

11.Nd5 c6 =+ (12.bc6 bc6=+). excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Nd5 c6 12.bc6 bc6 (13.Rd1 cd5 14.Bd5 Ra6–/+) 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Bd3 Be6 11.ed5 Qd5 12.Qd5 Bd5 13.f3 Nd7 14.Be4 Be4–/+ 15.fe4 c6 16.Nc3 cb5 17.Nb5 Nc5 18.Nd6 Nc8 19.Nc8 Rac8 20.Rb1 Rfe8 21.Kf1 Re4 22.Re1 Rc4 23.Re2 Rc3 24.Nf3 Ra3 25.Kf2 a4 26.Rhe1 Rd8 27.Re8 Re8 28.Re8 Kf7 29.Rh8 Rc3 30.Rh7 a3 31.Nd2 a2 32.Nb3 Nb3 33.cb3 a1Q 34.Rg7 Kg7 35.Ke2 Qb2 36.Kd1 Rc1# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Bd3 Be6 11.ed5 Nd5 12.Qe4 Kf7 13.Qh7 +=.

10.Bd3 Be6 11.e5 Nf5 12.Bf5 Bf5 13.ef6 Rf6 14.c4 Re6 15.Ne2 Qg5 16.Nbc3+= dc4 17.Qc4 Qg2 18.Rg1?? Qg1–+ 19.Kd2 Qa1 20.Qc7 Qb2 21.Ke1 Qc1 22.Nd1 Qc7 23.h4 Qc1 24.a4 Nd7 25.h5 Rae8 26.h6 Bh3 27.hg7 Re2 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

10.Qd5 Nd5.

11.Qd5 Qd5 12.ed5 Bf5 13.Nc3 Bc2 14.Nge2 Bd3 +/–.

11.Qd5 Qd5 12.ed5 Bf5 13.Nc3 Bc2 14.Nf3 Re8 15.Kd2 Bg6 +=.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8+= 14.Kd1 Nd7 15.Nf3 Nc5 +=.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8 14.Kd2 Nd7 15.Nf3 Nb6 16.Rc1 =.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8+= 14.Kd2 Nd7 15.Nf3 Nb6 16.c5 Nd5 17.Nd4 =+.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8+= 14.Kd2 Re4 15.Kc3 Re1 16.Kb2 Rf1=+ 17.f3 Rf2–/+ 18.Kb3? a4 19.Kc3 Rc2 20.Kd4 Rc1 21.g4 Bb1 (22.Ke3 Nd7–+; 21...Rb1?! 22.Rb1 Bb1 23.Nh3–/+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8+= 14.Kd2 Re4 15.Ne2 Rc4 16.Rc1 Rc1 17.Kc1 Nd7 =.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8 14.Kd2 Re4 15.Ne2 Rc4 16.Nbc3 Nd7 =.

11.Qd5 Qd5 12.ed5 Bf5 13.c4 Re8 14.Ne2 Bd3 (15.Nbc3 Bc4=). excalibur – Caissa, Live Game Caissa's Web, 2004. .

6.Nc3 0-0 7.Bc4 Kh8 8.Nf3 =.

6.Nc3 d5 7.Qh5+= g6 8.Qf3 c6!? +=.

6.Nc3 d5 7.Qh5+= g6 8.Qf3 Qd6 9.ed5+/– Bf5 10.d3 0-0 11.g4 Bd7 12.Ne4 Qb6 13.Nc5 Qc5 14.c4 c6 15.dc6 Nbc6 16.Ne2 Nd8 17.Bg2 Be6 18.g5 fg5+/– 19.Qg3 Rf6? 20.Qe5+– Qe5 21.Be5 Rf5 22.Bc7 Rf7 23.Bd8 Rd8 24.Bb7 Rd3 25.Be4 Rd8 26.c5 Rdf8 27.f3 h6 28.Rc1 Bh3 29.Rg1 Rd8 30.c6 Rb8 31.a4 Rb6 32.Nd4 Rf4 33.Kd2 Kg7 34.Nb3 Bf5 35.Rge1 Nc8 36.Na5 Rh4 37.Nc4 Be4 38.Nb6 Rh2 39.Kc3 Nb6 40.Re4 Ra2 41.Kb3 Rf2 42.a5 Rf3 43.Rc3 Rc3 44.Kc3 Nd5 45.Kd4 Nc7 46.b6 Nb5 47.Ke5 g4 48.b7 g3 49.b8Q g2 50.Qb7 Kf8 51.Kf6 Nc7 52.Qc8 Ne8 53.Re8 (53.Qe8?!=) 1–0. NN – COMP, internet, 2002.

6.Nc3 d5 7.Qh5+= g6 8.Qf3 Qd6 9.ed5+/– Bf5 10.g4 Bc2 11.Rc1 e4 12.Qg2 Ba3 13.Ba3 Qa3 14.Rc2 Qa1 15.Ke2 f5 16.Qg3 Nd7 17.Qc7 Rc8 18.Qd6 b6? 19.Nh3 Rc5 20.Ra2 Qc1 21.Qe6 Nf8 22.Qe5 Rg8 23.Bg2 Nd7 24.Qe6 Rc3 25.d6 Rg7 26.Rc1 Rc1 27.d4 fg4 28.Ng5 h6 29.Ne4 Kd8 30.de7 Re7 31.Qg6 Rg1 32.Qg8 Re8 33.Qg4 Re7 34.Kd3 h5 35.Qg8 Re8 36.Qg5 Re7 37.Nd6 Nf6 38.Qf6 Rd1 39.Rd2 Rd2 40.Kd2 Kd7 41.Bh3 Re6 42.Qe6 Kc7 43.Qd7 Kb8 44.Qb7 1–0. NN – COMP, 2002.

6.Nc3 d6 7.Qh5 g6 8.Qh6 =.

6.Qh5 g6 7.Qh4 =.

6.Qh5 Ng6 7.Bc4 c6 8.Nc3 cb5 9.Nb5 Qb6 10.d4+– ed4 11.Nf3 d3 12.0-0+– Nc6 13.Nh4 Nce7 14.cd3 Qc6 15.d4 Bd6 16.d5 Qb6 17.Nf5 Nf5 18.ef5 Kf8 19.fg6 h6 20.Rae1 Bf4 21.d6! Qc6 22.Bf7 Be5 23.Re5 Qg2 24.Kg2 fe5 25.Qe5 Rh7 26.Qe7# 1–0. orane (2135) – Caissa (1920), Live Game Caissa's Web, 2004.

6.Qh5 Ng6 7.Bc4+= Qe7 8.Nh3 Qd6 9.0-0 Bd4 10.c3+/– Bc5 11.d3 c6 12.Nd2 cb5 13.Bb5 Qb6 14.a4 Nc6 15.Rab1 Rb8 16.Nb3 Be7 17.Bc1 Qc7 18.Be3 b6 19.f4+– Na7 20.f5 Nb5 21.ab5 Qc3 22.fg6 Qd3 23.Bh6! hg6 24.Qg6 Kd8 25.Bg7 Rg8 26.Qf7 Rg7 27.Qg7 Qe4 28.Qg8 Kc7 29.Nf2 Qe3 30.Rfe1 Qf4 31.Rec1 Kb7 32.Na5! ba5 33.Qd5 Kb6 34.Rc6!! dc6 35.Qc6 Ka7 36.b6 Rb6 37.Qb6 Ka8 38.Qb8 1–0. NN – COMP, internet, 2002.

5.a4 cb5 6.ab5 d5 7.e3 b6 8.d4 e4 9.c4 Be6 10.Nd2 Bb4 11.cd5 Bd5 12.Ne2 f5 13.Nf4 Bf7 14.Be2 Nf6 15.0-0 g5 16.Nh3 h6 17.Nc4 Nd5 18.Ne5 Be6 19.Bh5+/– Ke7 20.Ng6 Kf6 21.Nh8 Qh8 22.g4 Nd7 23.Rc1 Rc8 24.Rc6 Rc6 25.bc6 Nb8 26.Qc2 Qc8 27.gf5 Bf5= 28.Kg2?? Bh3–+ 29.Kg1 Bf1 30.Kf1?? Qh3 31.Ke2 Qh5 32.Kf1 Qh3 33.Ke2 Qf3 34.Kf1 Qh1 35.Ke2 Qe1 0–1. amator111 (1675) – bamid (1665), internet, 2011.

5.a4 cb5 6.ab5 d5 7.e3 Bd7 8.d4 Qb6 9.c4 ed4 10.Bd4+/– Qd6 11.c5 Qc7 12.b6 Qc8 13.Qc1 Nc6 14.Bb5 Nd4= 15.Bd7 Qd7 16.ed4 Ne7 17.Ne2 Nc6 18.0-0 Be7 19.Nbc3 0-0 20.Qd2 Rfe8 21.Rfe1 Bf8 22.Rab1 g6 23.Nb5 Bg7? 24.Nc7+– Rad8 25.Ne8 Re8 26.Nc3 f5 27.Re8 Qe8 28.Nb5 Qd7 29.Nd6 Bd4 30.Kf1 Bc5?? 31.Nc4 Bb4 32.Qd3 Qe6 33.Ne3 d4 34.Qc4 Qc4 35.Nc4 d3?? 36.Rd1= a4 37.Rd3 a3? 38.Na3+– Ne5 39.Rb3 Bc5 40.Nb1 Nd7 41.Nd2 Nb6 42.Ke2 Nd7 43.Rb7 Ne5 44.f3 Nc6 45.Rc7 Nd4 46.Kd3 Ne6 47.Rc6 Kf7 48.Nc4 Bg1 49.h3 Kf6 50.Ne3 g5 51.Nd5 Kf7 52.Ra6?? h6 53.Ra7?? Kg6 54.Ra6 Kf7 55.Ne3?? Nf4?? 56.Kc4?? Be3–+ 57.g3 Nh3 58.Rh6 Nf2 59.Rh7 Kg6 60.Rh8 Nd1?? 61.Kd3?? Bf2 62.Ke2 Bg3 63.Kd1 f4 64.Ke2+/– Kg7 65.Kd3?? Kh8–+ 66.Ke4 Kg7 67.Kf5 Kh6 68.Kg4 Kg6 69.Kh3 Kf5 70.Kg2 g4 (70...g4 71.fg4 Kg5 72.Kf3 Bh4 73.Kg2 Kg4 74.Kh1 Kg3 75.Kg1 f3 76.Kh1 Kf4 77.Kh2 Be7 78.Kh1 Ke3 79.Kg1 Ke2 80.Kh2 f2 81.Kh3 f1Q 82.Kg3 Qf3 83.Kh2 Bd6 84.Kg1 Qf1) 0–1. amator111 (1715) – egzystor, internet, 2011.

5.a4 d5 6.e3 Bd7 7.c4 cb5 8.ab5 b6 9.cd5 Bb4 10.Bc4 Ne7 11.Qh5 g6 12.Qh4 Nf5=+ 13.Qe4 Nd6 14.Qc2 Bf5 15.Qb3 Nd7 16.Ne2?? Nc5–+ 17.Qa2 Bd3 18.Bd3–/+ Nd3 19.Kf1 Rc8 20.Nbc3 Nc4 21.Bc1 e4 22.Nd4 Bc3–/+ 23.dc3 Qd5 24.Ba3 Nc5 25.Ke2 0-0 26.Rad1?? Qf7 27.Bc5 Rc5 28.Nc6 Qc7?? 29.Rd4+/– Re8? 30.Rhd1 Re6?? 31.g3 Rd6?? 32.Rc4 Rd1 33.Kd1 Rc4?? 34.Qc4 Kg7 1–0. bratek55 (1660) – hugr, internet, 2011.

5.a4 d5 6.e3 Bf5 7.d4 Bd6 8.Nd2 Nd7 9.c4 Bb4 10.cd5 cd5 11.h3 Rc8 12.Rc1 Ne7 13.g4 Be4 14.f3 Bg6 15.Kf2 Bd2 16.Qd2 0-0 17.Ne2 Qb6 18.Bg2 e4 19.f4 f5 20.Ba3 Rc1 21.Rc1 Re8 22.Ng3 Nc8? 23.gf5+– Bf7 24.h4 Nd6 25.Bf1 Nf6 26.Bc5 Qd8 27.h5?? Bh5?? 28.Nh5 Nh5 29.Bd6 Qd6 30.Be2 Nf6?? 31.Qa5+/– Qd7 32.Qc7 Qf5 33.Rg1 Qd7 34.Qd7 Nd7 35.Rc1 Ra8? 36.Bd1 Nb6 37.Rc5 Na4 38.Ba4 Ra4 39.Rd5 Ra5 40.Re5 Kf7+= 41.Re4 Rb5–/+ 42.Kf3 Rb1 43.Re5= b5 44.Ke4 b4 45.Rb5 g6? 46.d5 Ke7 47.Ke5 h5 48.Rb7 Kd8 49.Kd6 h4?? 50.Rb8 1–0. amator111 (1705) – hugr (1715), internet, 2011.

5.a4 d5 6.e3 Bf5 7.Nf3 Bd6 8.Be2 Bg6 9.0-0 e4 10.Nd4 c5 11.Nb3 b6 12.c4 Ne7 13.cd5 Nd5 14.Bc4 Nb4 15.Nc3 Qc7 16.g3 Nd7 17.Nd5 Nd5 18.Bd5 0-0-0 19.Rc1 Be5 20.Nd4 Bd4 21.ed4 Kb8 22.dc5 Nc5=+ 23.Bc6 h5 24.Rc5 bc5 25.Qc2 h4 26.Qc5 hg3 27.fg3 Rc8 28.Bd4 Rhd8?? 29.Be3+– Be8 30.Rc1 Bc6?? 31.bc6+– Ka8 32.Bf4 Qa7= 33.Qa7 Ka7 34.c7 Rd4?? 35.Ra1 Rc4 36.Kf2? R4c7?? 37.Bc7= Rc7 38.Ke3 Rc4 39.h4 g6 40.d3?? ed3–/+ 41.Kd3 Rg4 42.Rg1 Ra4 43.Rh1 Rg4 44.Rh3 f5 45.Kc3 Ka6 46.Kb3 Kb5 47.h5 gh5 48.Rh5 Rg3 49.Ka2 Rf3 50.Rh8 Ka4 51.Rd8 Rf2 52.Kb1 f4 53.Rd4 Ka3 54.Rd3 Kb4 55.Rd4 Kc3 56.Rd8 a4 57.Rc8 Kd3 58.Rd8 Kc3 59.Rc8 Kb3 60.Rb8 Kc3 61.Ra8 (61.Ra8 f3 62.Rc8 Kd3 63.Rf8–+) 1–0. bratek55 (1640) – hugr (1610), internet, 2011.

5.Nc3 cb5 6.Nb5 (6.e4 b4 7.ab4 Bb4+/–) 6...Qb6 (6...d5 7.d4 e4 8.e3+=) 7.e3 (7.e4 Nc6+/–) 7...Nh6 (7...d5 8.d4 Bd7 9.c4 dc4 10.Bc4 Bb5 11.Qb3 Bb4 12.ab4+=) 8.c4 Bc5 (better is 8...d6!?+/–) 9.d4+– ed4 10.ed4 Be7 11.Qh5 Kf8 (11...Nf7 12.c5 Qe6 13.Ne2+–) 12.Bd3 d6 13.Nf3 (13.Ne2 Bg4 14.Qd5 Qc6+–) 13...Bg4 14.Qd5 Nd7 (14...Qc6 15.Nd2+/–) 15.Nh4 (better is 15.h3 Bf3 16.Qf3+– (16.gf3?! Re8+/–)) 15...Nf7? (better is 15...Qc6 16.h3 Qd5 17.cd5 Bh5+/–) 16.h3+– g5 17.hg4 gh4 18.Qe6 (18.Qf5 Qd8+–) 18...Nb8 (18...Rd8 19.Qf5+–) 19.c5 Qc6 20.cd6 (20.Rh4?! dc5 21.Qe2 Na6+–) 20...Bd6 (20...Nd6 21.d5 Qd7 22.Nd6 Qd6 23.Qc8 Qd8 24.Qb7 Nd7+–) 21.Bc4 (21.Rh4?? Bb4 22.Kf1 Qe6 23.ab4 Qb3–+; 21.Nd6?! Qd6 22.Qb3 Kg7+–) 21...Qd7 22.Qf7 Qf7 23.Bf7 (23.Bf7 Ba3 24.Ba3 Kf7 25.Rh4+–) 1–0. Wall,Bill – Miles, internet, 2005.

5.Nc3 d5 6.e3 d4 7.ed4 ed4 8.Na4 c5? (8...Bf5 9.Qe2 Ne7 10.Qc4=) 9.Bc4 (9.Qe2!? Kd7 10.c3+–) 9...b6 10.Qe2 Qe7?? (better is 10...Ne7+/–) 11.Nb6+– Ra7 1–0. Fournier,Frederic – spline (1640), Active (3/0), 2006.

5.Nc3 d5 6.e4=.

5.c4 d5 6.cd5 cd5 7.e3 a4 8.Nf3 Be6 9.Be2 Qd7 10.Nc3 Nh6 11.0-0 Nf5 12.Na4 Nd6?? (better is 12...Qc7+/–) 13.Nb6+– Qd8 14.Na8 Nd7 15.Qa4 Nc5 16.Qa7 (better is 16.Qc2 Qa8 17.d4+–) 16...Nde4?? (16...Nc8 17.Qb8 Bd6 18.Nc7 Bc7+–) 17.d3 Nd6 18.d4 (better is 18.b6 Nc8 19.Qa5+–) 18…Nc8 (18...Nc8 19.Nc7! Qc7+–). Fournier,Frederic – kidicarus, Active, 2007.

5.c4 d5 6.e3 Be6 7.cd5 cd5 8.Nf3 Bd6 9.Be2 Nd7 10.0-0 Nh6 11.Nc3 0-0 12.Rc1 g5 13.Qb3 Nb6 14.Na4 Na4 15.Qa4 Qe8 16.h3 g4 17.hg4 Ng4 18.Nh2 Nh2 19.Kh2 e4 20.g3 Qg6 21.Rh1 Kh8 22.Qd4?? Be5–+ 23.Qb6 Bg4?? 24.Be5= Be2 25.Rhe1?? Bf3 26.Bf4 Qh5 (26...Qh5 27.Kg1 Qh1) 0–1. vihavald (1670) – endlessrayne (1765), internet, 2011.

5.bc6 bc6 6.e3 d5 7.Be2 Bd6 8.Nf3 Ne7 9.c4 0-0 10.cd5 cd5 11.Nc3 Be6 12.0-0 Nbc6 13.d3 Nc8 14.Nb5 Be7 15.Rc1 N8a7 16.Na7 Na7 17.Qa4 Rb8 18.Rb1 Qd7 (18...d4 19.Ba1 (19.ed4?? Bb3 20.Qb3 Rb3–+) 19...de3 20.fe3+=) 19.Qd7 (better is 19.Qa5!? Rfc8 20.Qd2+=) 19...Bd7+= 20.Rfc1 Bb5 (20...Rfe8 21.Be5 Rb1 22.Rb1 fe5 23.Rb7=) 21.Rc7 Nc6 22.Nd2? (better is 22.Bc1 Bd6 23.Rb5 Bc7 24.Rd5–/+) 22...Rfc8?? (better is 22...Bd6 23.Rd7 Nd4 24.Rg7 Kg7 25.ed4 ed4 26.Bd4 Rfe8–+) 23.Rc8 (23.Be5!? Ne5 24.Rb5 Rc7 25.Rb8 Kf7 26.Nf1+=) 23...Rc8= 24.Be5 (better is 24.Bf3 Bd3 25.Bd5 Kf8 26.Rc1=) 24...Ne5–/+ (worse is 24...fe5 25.Rb5 Ba3 26.Rd5+/–) 25.Rb5 Rc1?? (better is 25...Rc2–/+) 26.Nf1+/– Ba3 (26...Re1!? 27.f4 Re2 28.fe5 a4+/–) 27.Ra5+– (worse is 27.Rd5 Bb4+/–) 27...Bb4 28.Rb5 Bf8 (28...Re1 29.Bf3 Nf3 30.gf3+/–) 29.Rb8 (better is 29.f4!? Nf7 30.Rd5+–) 29...Kf7 30.g3 Re1 31.Rb2 h5 (31...Ke6 32.d4 Nc4 33.Rc2+/–) 32.Kg2 (32.d4 Nc4 33.Rc2 Nd6 34.Bh5 Ke6+–) 32...g5? (better is 32...g6!?+/–) 33.Bh5+– Ke6 34.Nd2 (better is 34.Rb6!? Bd6 35.d4 Nc4+–) 34...Nd3 35.Rb6 Bd6 36.Nb3 Kd7 37.Nd4 (37.Rb5 Nb4+–) 37...Be5 (37...Rc1 38.Rb7 Kc8 39.Rb5+–) 38.Nf3 (better is 38.Rb5!? Ke7 39.Nf5 Ke6 40.Bg6+–) 38...Ra1 39.Rb5 Kc6 40.Rb3 Nc5 41.Be8 Kc7 42.Rb5 Ne4 (42...Kd6!?+/–) 43.Ne5+– fe5 44.Rd5 Ra2 45.Re5 Nf2 46.Kf3?? (46.Bf7!? Rb2 47.Re7 Kd8 48.Re8 Kd7 49.Kf3+/–) 46...g4 47.Kf4 Nd3 48.Ke4 Ne5 49.Ke5 Rh2 50.Kf4 Re2 51.Bh5 (51.Kg4?! Re3 52.Bb5 Rg3 53.Kg3=) 51...Kd6 52.Bg4 Re1 53.e4 Ke7 54.e5 (better is 54.Bc8+–) 54...Rf1+= 55.Bf3 Ke6 56.g4 Rf3 57.Kf3 Ke5 58.Ke3 Ke6 59.Kf4 Kf6 60.Ke4 Kg5 61.Kf3 Kg6 62.Kf4 Kf6 63.g5 Kg7 64.Kf5 Kf7 65.g6 Kg8 66.Kf6 Kf8 67.g7 Kg8 68.Kg6 ½–½. Fournier,Frederic – alentejano36 (1695), Active, 2006.

5.bc6 dc6 6.e3=.

5.bc6 Nc6 6.c4 Bc5 (6...Nge7 7.e4=) 7.Nc3 (7.e3 Nge7=) 7...Nge7 8.Na4 (8.e3 0-0=) 8...Bd4 (8...Ba7 9.e3=) 9.Bd4 Nd4 10.e3 Ndc6 11.Rb1 (11.Qh5 g6 12.Qf3 0-0=) 11...0-0 12.Nb6 Rb8 13.d4 (better is 13.Nc8 Nc8 14.Qc2=) 13...d5 (better is 13...ed4!? 14.ed4 Nf5=) 14.cd5+/– Nd5 (14...Bf5!? 15.Rb2 Nd5+/–) 15.Bc4+– (15.Nc8 Rc8 (worse is 15...Qc8 16.Bc4 Nce7 17.Rc1+/–) 16.de5 A) worse is 16...fe5 17.Bc4 Nd4 18.Qd3+= (worse is 18.ed4 Rc4 19.Ne2 ed4–/+); B) 16...Ne5 17.Rb7 Nc3=) 15...Be6 16.de5 Ne5? (better is 16...Nc7 17.Be6 Ne6+–) 17.Bd5 (worse is 17.Nd5 Nc4 18.Nf4 Bf7–/+) 17...Bd5 18.Nd5 (18.Nd5 b5 19.Nf3+–; 18.Qd5 Qd5 19.Nd5 b5+–) 1–0. Wall,Bill – Pragmatist, Microsoft Gaming Zone, 1999.

5.bc6 Nc6 6.e3 d5 7.c4 Nge7 (7...d4 8.Nf3=+) 8.Nf3 Be6 9.cd5 Nd5 10.d3 (10.Qc2!?=+) 10...Qb6 11.Qc2 Be7 (11...Rc8 12.Nc3-/+) 12.Be2 (12.Nc3 Rc8 13.Be2 0-0=+) 12...0-0 (12...Bc5 13.Bd1-/+) 13.Nbd2 (13.Nc3 Rac8 14.0-0 Rfe8=+) 13...Rac8 (13...Rfc8 14.Qb1-/+) 14.Nc4 Qa6 15.Qd1 b5 16.Ncd2 Nb6 (16...b4 17.ab4 Ncb4 18.Nc4-/+) 17.d4 ed4 (17...Qb7 18.Bb5 ed4 19.Bc6 Qc6 20.Bd4=+) 18.ed4 (better 18.Nd4 Nd4 19.Bd4=+) 18...Na4?? (better 18...Qb7-/+) 19.Qa4!!+- Qb6 (19...ba4 20.Ba6 Pinning (20.Ba6 Deflection)) 20.Qb5 Qc7 (20...Qb5 21.Bb5 Na7 22.Bd3+-) 21.Bc4 (better 21.Rc1 Qd7+-) 21...Qd6 (21...Nd4 22.Be6 Ne6+-) 22.Ne4 Qd7 23.0-0 (23.d5!? Rb8 24.Qa4 Rb2 25.dc6 Qc8+-) 23...Rb8 24.Nc5 (24.Qf5 Nd8 25.Rab1 g6 26.Be6 Ne6 27.Qa5 Rb3+-) 24...Bc5 (24...Rb5 25.Be6 Qe6 26.Ne6 Rb2 27.Nf8 Bf8+-) 25.Qc5 (25.dc5?! Rb5 26.Bb5 Bd5=+) 25...Rfc8 26.Be6 (26.d5 Ne5 27.de6 Qe8+-) 26...Qe6 27.Rfe1 (27.d5 Qf5 28.Qd6 Rd8 29.Qc6 Rb2+-) 27...Qf7 (27...Ne5 28.Qa5 (worse 28.Ne5 Rc5 29.Nd3 Qd6 30.dc5 Qd3=+) 28...Nf3 29.gf3+-) 28.Rab1 (better 28.Rac1 Qb7+-) 28...Ne5 (28...Nb4 29.Qd6 (29.ab4?! Rc5 30.dc5 Rb4+-; 29.Qa5?! Nd3+-) 29...Rd8 30.Qg3+-) 29.Ne5 Rc5 30.Nf7 (30.dc5?! fe5 31.Rbd1 e4=) 30...Rc2 (30...Rc6 31.Ne5! fe5 32.de5 Rcb6+-) 31.Nd6 Kf8 (31...h5 32.Ba1 Rb1 33.Rb1+-) 32.a4 g6 (32...g5 33.Ba3 Rb1 34.Rb1+-) 33.Ba3 (33.Bc1 Rcc8 34.Nc8 Rc8 35.Rb7 Rd8 36.Ba3 Kg8 37.Ree7 h5 38.Rg7 Kh8 39.Rh7 Kg8 40.Rbg7) 33...Kg7 (33...Rb1 34.Rb1 g5+-) 34.Rb8 Rd2 35.Rb7 Kh6 36.Bc1 g5 37.Bd2 Kg6 (37...Kh5 38.Rh7 Kg6 39.Ree7 f5 40.Rhg7 Kh5 41.Rg5 Kh4 42.Nf5) 38.g4 h5 39.gh5 (39.Re8 hg4 40.Rg8 Kh6 41.Nf5 Kh5 42.Rh7) 39...Kh5 40.f3 Kg6 (40...Kh6 41.Re8 Kg6 42.Rg8 Kh6 43.Nf5 Kh5 44.Rh7) 41.Ree7 f5 (41...g4 42.fg4 f5 43.Re6) 42.Re6 Kh5 43.Rh7 1-0. Castro Estrella,Joan G - Creixans Comerma,P (1750), 35th Obert La Lira, 2017.

5.bc6 Nc6 6.e4 Bc5 7.Qh5 g6=.

5.d4 Bd6 6.e3 Ne7 (6...Qe7 7.Nf3+=) 7.de5+/– Be5 8.Be5 fe5 9.Qh5 Ng6 10.Bd3 Qf6 11.Bg6 Qg6 12.Qe5 Kf7 13.Qf4 Qf6 (13...Ke7 14.Ne2+/–) 14.Nc3 (14.Qf6 gf6 15.c4 Rg8+/–) 14...cb5 (14...Qf4!? 15.ef4 Re8 16.Kd2 d6+/–) 15.Nge2 d5 16.Nb5 Bf5 (better is 16...Na6+–) 17.Nd6 Kg6 18.Rd1 Nc6 (18...h6 19.c4 Bc2 20.Qf6 Kf6 21.Rd5 b6+–) 19.Rd5 Ne7 (19...h6 20.Rf5 Qe6+–) 20.Rf5! Nf5 (20...Nf5 21.Qg4 Double attack (21.Qg4 Deflection; 21.Qg4 Decoy)) 21.Qg4 Qg5 22.Nf4 (22.Nf4 Kf6 23.Ne4 Ke5 24.Nd3 Kd5 25.Ng5+–) 1–0. aspasio – acaudron (2220), net–chess.com, 2014.

5.e3 cb5 6.Bb5+= b6 7.Qf3 Ra7 8.Qg3 Ba6 9.a4 h5 10.Qg6+/– Ke7 11.Ba3 d6 12.Nc3 Bb7? 13.Bc4+– Kd7 14.Qf7 Qe7+/– 15.Bb5 Bc6 16.Bc6 Nc6 17.Qe7 Be7+= 18.Nd5 Nh6 19.Nb6 Ke6+= 20.Ne2 Rb8=+ 21.Nc4 d5 22.Be7 Ne7 23.Na3 Rab7 24.0-0 Rb4 25.Rfb1+= Nc6 26.Nb5 Na7?? 27.Rb4+– ab4 28.Na7 Nf7 29.a5 Nd6?? 30.a6 Ra8 31.Nc6 Nb5 32.Nb4 Kd6 33.Nc3 Kc5 34.Nb5 Kb5 35.Nd5 Ra6 36.Ra6 Ka6 37.f4 ef4 38.Nf4 (38.Nf4 g5 39.Nh5+–) 1–0. jackson1 (1785) – We3D, internet, 2007.

5.e3 d5 6.Bd3 (6.d4 e4=) 6...e4 (6...Ne7 7.Nc3=) 7.Be2 Bc5 (7...Bd6 8.d3=) 8.d4 (8.d3 Qe7= (worse is 8...cb5 9.de4 b4 10.ed5+/–)) 8...ed3 (8...Be7 9.c4=) 9.Bd3+= Ne7 (9...Nh6 10.Qh5 Ke7 11.Nc3+=) 10.Nf3 (10.Qh5 Kf8+=) 10...0-0= 11.0-0 (11.c4 Be6 12.cd5 Qd5+=) 11...Nf5 (11...cb5!? 12.Bb5 Nbc6=) 12.c4+/– Be6 (12...dc4 13.Bc4 Kh8 14.Bd3+/–) 13.cd5 Bd5?? (better is 13...cd5 14.Qc2 Qc8+/–) 14.Bf5+– 1–0. Wall,Bill – Greener, internet, 2004.

5.e3 d5 6.d4 ed4 7.Bd4 Nh6 (7...Ne7 8.Qh5 g6 9.Qf3=) 8.Nf3 Nf5 9.c4 dc4 (9...Be6 10.cd5 Qd5 11.Nc3+=) 10.bc6 (10.Bc4 Nd6 11.bc6 Nc4 12.cb7 Bb7 13.Qa4 Nc6 14.Qc4 Nd4 15.Nd4 Bg2+=) 10...Nc6 (10...b5 11.Nc3 b4 12.Nb5 Nc6 13.Bc4+=) 11.Bc4 Nfd4 12.Nd4 Nd4 13.ed4 Bd6 14.0-0 (14.Qh5 g6 15.Qb5 Kf8=) 14...Bh2 15.Kh1 (15.Kh2 Decoy theme: h2 15...Qc7 Theme: Double Attack) 15...Bf4 16.Nc3 (16.Re1 Kf8=) 16...f5 (16...Qd6 17.Nd5+=) 17.Re1 (17.g3 Bg5=) 17...Kf8 18.Qf3 (18.g3 Bg5=) 18...Qh4+= 19.Kg1 Qh2 (19...Bh2 20.Kf1 Qd4 21.Qe2+–) 20.Kf1= Qh1 21.Ke2 Qh6 22.Kd3 Bd7 (better is 22...Bd6!?+=) 23.Rab1 Rc8 (better is 23...Qd6+/–) 24.Rb7 Qd6 25.Ra7 (better is 25.Rd7!? Qd7 26.Qf4 Rc4 27.Kc4 Kf7+–) 25...Rd8 26.Ra5 Bc8?? (26...Bg5+–) 27.Rd5 (27.Rd5 Qf6 28.Qf4 Rd5 29.Nd5+–) 1–0. Woelfelschneider,Peter – Sicker,Rolf, KO–07.F01 ETC, 2004.

5.e3 Ne7 6.c4 a4 7.Nc3 cb5 8.Nb5 Ng6 9.d4 e4 10.Be2 d6+= 11.Nc3 Bd7 12.Ne4+– Bc6 13.d5 Bd7 14.Nf3 Be7 15.0-0 Ne5 16.Ne5 de5 17.d6 Bf8 18.c5 Nc6 19.Bc4 h5? 20.Qd5 Qa5 21.Bc3 Qa7 22.Nf6! gf6 23.Qf7 Kd8 24.Qf6 Ne7 25.Qh8 Ng6 26.Qf6 Ke8 27.Qg6 (27.Qg6 Kd8 28.Qf6 Be7 29.Qe7 Kc8 30.Qf8 Be8 31.Qe8; 27.Bf7) 1–0. PeterRs – SIRMO, ChessWorld.net, 2006.

5.e3 g6 6.c4 c5 7.Nf3 b6 (7...d5 8.cd5 Qd5 9.Nc3+/–) 8.d3 (8.Ne5!? d5 9.Nf3+–) 8...Bb7 9.Nc3 Ne7 10.Be2 h5 11.h3 Nf5 (11...d5 12.d4 cd4 13.ed4+=) 12.Qc2 Bf3 (better is 12...Bh6!?+=) 13.Bf3+– (worse is 13.gf3 Bg7+/–) 13...Ra7 14.Nd5 g5? (14...Nh4 15.d4 cd4 16.ed4+–) 15.a4 (better is 15.d4!? Nh4 16.de5 Kf7+–) 15...Bg7 16.0-0-0 (16.Qe2 h4+–) 16...d6 17.g4 (17.d4 Ne7 18.de5 fe5+–) 17...hg4 18.hg4 Nh4 19.Qe2 Qd7 20.Nb6 Qe6? (20...Qd8 21.Nd5+–) 21.Nd5 (21.Bd5 Qe7 22.Nc8 Qc7 23.Na7 Qa7+–) 21...Re7 (21...Qc8 22.Be4+–) 22.e4 (better is 22.Ne7!? Qe7 23.Be4 Nd7+–) 22...Nf3 (22...Rb7 23.Bc3+–) 23.Qf3 Rh1 24.Rh1 Nd7 (24...Rb7 25.Rh7 Kf7 26.Bc3+–) 25.Rh7 (25.Nc7 Kf7 26.Ne6 Re6+–) 25...Rf7 (25...Nf8 26.Ne7 Nh7 27.Nd5+–) 26.Qh3 (better is 26.Nc7 Ke7 27.Ne6 Ke6 28.Qf5 Ke7+–) 26...f5?? (26...Nf8 27.Rh5 Qd7+–) 27.gf5 (27.Nc7 Ke7 28.Ne6 Ke6 29.ef5 Ke7+–) 27...Qf6 (27...Qd5 28.cd5 g4 29.Qh4+–) 28.Nf6 Nf6 29.f3 (better is 29.Rg7 Rg7 30.Qh8 Kf7+–) 29...d5 (29...Nh7 30.Qh7 Ke7 31.Qg8+–) 30.cd5 (30.Rg7 Rg7 31.Qh8 Kf7 32.Be5 de4 33.de4 g4 34.fg4 Ne8 35.Bg7 Ke7 36.e5 Ng7 37.Qg7 Kd8 38.b6 Ke8 39.b7 Kd8 40.b8Q) 30...g4 31.fg4 Bf8 32.Rf7 Kf7 33.Be5 c4 34.Bf6 Kf6 35.dc4 Ba3 36.Kc2 (36.Qa3 Ke5 37.Qe7 Kd4 38.c5 Ke3 39.b6 Kf3 40.b7 Ke2 41.b8Q Kf2 42.Qh4 Ke3 43.Qe1 Kd4 44.Qd2 Kc5 45.Qc3) 36...Ke5 37.Qa3 Ke4 (37...Kf6 38.d6 Ke5 39.Qg3 Kd4 40.d7 Ke4 41.c5 Kd5 42.d8Q Kc5 43.Qc3) 38.d6 (38.Qg3 Kd4 39.Qf4 Kc5 40.Kc3 Kb6 41.Qb8 Kc5 42.Qc7) 38...Kf4 39.d7 (39.Qh3 Ke4 40.d7 Kf4 41.d8Q Ke4 42.Qe7 Kd4 43.Qd3) 39...Kg4 (39...Kg5 40.Qe3 Kf6 41.d8Q Kg7 42.Qd7 Kf8 43.Qee8) 40.d8Q Kf5 41.Qf3 Ke5 (41...Kg6 42.Qff6 Kh5 43.Qd1) 42.Qdd5 1–0. Fournier,Frederic (1835) – FilomenoCorrale, Active, 2008.

5.e4 Bc5=.

5.e4 d5 6.ed5 cd5 7.d4 e4 8.c4 Be6 (8...f5 9.Nc3 Nf6 10.Nh3+=) 9.cd5+= Bd5 10.Nc3 f5 11.Nd5 Qd5 12.Rc1 Nf6 13.Rc8 Kd7 14.Bc4 Kc8 (better is 14...Qd6!? 15.Rc5 Qf4+/–) 15.Bd5+– Nd5 16.Ne2 Nd7 17.Qc1 Kd8 18.Qg5 Be7 19.Qg7 Rf8 20.Qh7 Rc8 (20...a4 21.Bc1 Ra5 22.Ng3 Rb5 23.Nf5+–) 21.Bc1 Rc2 (21...N7b6 22.Bh6 Rc7 23.Qg6+–) 22.Bh6 Re8 23.Qf5 Ra2 (23...N7b6+–) 24.Qd5 Ra1 25.Bc1 Ba3 26.0-0 Bb4 (26...Bc1 27.Qb7 e3 28.Qa8 Ke7 29.Qe4 Kd8 30.Qh4 Kc8 31.Nc1 Rb1 32.fe3 Rb5+–) 1–0. mrkt (2165) – sekere (2170), ICC, 2003.

5.e4 d5 6.ed5 cd5 7.Ne2 Bc5 8.d4 ed4 9.Bd4 Qb6 10.a4 Ne7 11.c3 Bf5 12.Nd2 0-0 13.g3 Bd3 14.Bc5 Qc5 15.Nd4 Qc3 16.Ne6?? Qe5–+ 17.Be2 Qe6 18.Ra3 Be2 19.Qe2 Qe2 20.Ke2 Nd7 21.Rd1 Nc5 22.Nf3 Ne4 23.Nd4 Rac8 24.Rd2 Rfe8 25.Kf1 Nd2 26.Kg2 Rc4 (26...Rc4 27.Nf3 Ne4–+) 0–1. bratek55 (1645) – hugr (1610), internet, 2011.

5.e4 d5 6.ed5 cd5 7.Nf3 a4 8.Be2 Bc5 9.0-0 Qb6 10.c4 d4 11.d3 Ne7 12.Nbd2 0-0 13.Ne4 f5 14.Nc5 Qc5 15.Re1 Nd7 16.Nd2 b6 17.Bf3 Ra7 18.g3 g5 19.Bc1 g4 20.Bg2 Rf6 21.f3 gf3 22.Nf3 Bb7 23.Nh4 e4 24.de4 fe4? 25.Bf4?? e3?? 26.Qg4+– Ng6 27.Ng6 Rg6 28.Qd7 Bg2 29.Qa7 Be4 30.Qb8 Kg7 31.Be5 Kf7 32.Rf1 Ke6 33.Qe8 Qe7 34.Qe7 Ke7 35.Bd4 e2 36.Rfe1 (36.Rfe1 Bd3 37.c5 bc5 38.Bc5 Kd7 39.b6+–) 1–0. bratek55 (1650) – hugr, internet, 2011.

5.a4 Bc5 6.e3 Ne7 7.Nf3 0-0 8.Be2 c6 9.0-0 Bd7 10.c4 Qb6 11.Nc3 d4 12.ed4 ed4 13.Ne4 Bb4 14.d3 Nf5 15.g4+/– Nh6 16.Bd4 c5= 17.Be3 Ng4 18.Nh4 Ne3=+ 19.fe3 Bh3 20.Bg4? Bf1–+ 21.Qf1 Qc7 22.Qf3 Nd7 23.Ra2 Ne5–+ (23...Ne5 24.Qg3 Qb6–/+) 0–1. Onkel_Luis (1680) – ARISoz (1770), ICC, 2003.

5.Nc3 d4 6.Na4 Bg4 (6...Be6 7.e3 de3 8.de3 Qd1 9.Rd1=) 7.h3 (7.Nf3 Nd7+=) 7...Bh5 (7...Be6 8.Nf3+=) 8.Nf3+= Qd5 (8...Nd7 9.c3 dc3 10.Nc3+=) 9.e3 (9.c3 Bf3 10.gf3 Nd7+/–) 9...de3+= 10.de3 Qd1 11.Rd1 Nd7 12.Bc4 Bd6 13.0-0 e4 14.g4 Bg4 15.hg4 ef3 16.Bd5 h5 (16...0-0-0 17.Bf3 Ne7 18.Kg2+/–) 17.Bb7 (17.Bf3 hg4 18.Bg4 Ne7+=) 17...Rb8+= 18.Bf3 hg4 19.Be2 Ne7 20.c4 (20.Nc3 f5+=) 20...Rh5 21.Nc3 (21.Rd2 Kf7 22.f4 f5=) 21...Nc5= 22.f4 f5 23.Kg2 (23.Rf2 Kf7 24.Bf1 Nc8=) 23...Kf7 24.Rh1 Rbh8 25.Rh5 Rh5 26.Rh1 (26.b6 Rh3 27.Bc1 Bf4 28.ef4 Rc3 29.bc7 Ne6+=) 26...Rh1 27.Kh1 g5 28.fg5 Kg6 29.Kg1 Kg5 30.Kg2 (30.Bf1 Ne4 31.Bd3 Nd2=) 30...Ng6 (30...Nd7 31.Bc1=) 31.Nd5 Nh4 32.Kg1 Ne4 33.a4 Nf3 34.Kg2 ½–½. valeriuzaharia (2015) – nordlicht (1985), gameknot.com, 2012.

5.d4 Nd7 6.e3 Bd6 (6...Ne7 7.c4 ed4 8.Bd4 dc4 9.Nf3 c5=; 6...ed4 7.Bd4 Ne7 8.c4 dc4 9.Nf3 c5=; 6...c6 7.c4 Bd6 8.bc6 bc6 9.cd5 Rb8=) 7.c4 dc4 8.Nf3 Qe7 9.Bc4 Nb6=.

5.e4 d4 6.Bc4= c5 7.bc6 (7.Ne2 Nd7=) 7...bc6 8.c3 c5 9.cd4 cd4 10.Nf3 Bc5? (10...Nc6 11.Qc2 Nge7 12.0-0=) 11.Bb5 (11.Ne5 fe5 12.Qh5 Kd7 13.Qe5+=) 11...Bd7 12.Qa4 (12.a4 Ra7=) 12...Ne7 13.0-0 0-0?? (13...Qb6 14.Bd7 Nd7 15.Bc1=+) 14.Qb3?? (better is 14.Qc4 Kh8 15.Qc5+–) 14...Kh8= 15.Bd7 (15.a4 Ra7=) 15...Nd7=+ 16.d3 a4 17.Qa2 Qa5 18.Nbd2 Rab8 19.Nc4 Qa7 20.Rab1 Nb6 21.Nb6 Rb6 22.Nd2 Rfb8 23.Nc4 Rb3 24.Ba1 h5 (24...Rd3!? 25.Ne5 fe5 (< 25...Ra3 26.Nf7 Kg8 27.Rb8 Qb8 28.Qc4+=) 26.Rb8 Qb8–/+) 25.Rb3= ab3 26.Qb2 h4 27.f4 Qd7 (better is 27...Ng6 28.fe5 Ne5 29.Ne5 fe5=+) 28.fe5+/– fe5 29.Rf7 (better is 29.Ne5 Qe6 30.Nf7 Kg8 31.Qc1+/–) 29...Qe6 30.Rf3 (30…Nc6 31.Qf2=). b4_player (1855) – pucela (1830), GameColony.com, 2002.

5.e4 de4 6.Qh5 g6 7.Qe2 =+.

5.Nf3 Bd6 6.Nc3 Be6 7.e4 =.

5.Nf3 Bg4 6.h3 (6.d4 e4 7.Nfd2 Qd7=) 6...Bf3 7.ef3 Ne7 (7...Bc5 8.Nc3=) 8.Be2 Nf5 9.0-0 (9.f4 ef4 10.0-0 Qd7=) 9...Bc5 10.Bd3 Ne7 (10...Ng3 11.Re1=) 11.Re1 (11.f4 ef4 12.Qg4 0-0+=) 11...Nd7 12.c4 0-0 13.cd5 Nd5 14.Bc4 (14.Qc2!? g6 15.Be4+=) 14...N7b6= 15.Ba2 Qd7 16.Nc3 Kh8 (16...Rfd8 17.Qc2 Bf8 18.Rac1=) 17.Ne4 (better is 17.Nd5!? Nd5 18.d4 Bd4 19.Bd4 ed4 20.Qd4+=) 17...Qb5–/+ 18.Nc5 (18.Qc2 Bd4 19.Bd4 ed4 20.Rab1=+) 18...Qc5=+ 19.Rc1 (19.d4 ed4 20.Bd4 Qd6=+) 19...Qb5 20.Rb1 (20.Qc2 Nf4 21.Bb1 Ng6=+) 20...Qd3–/+ 21.Re4 Nf4 22.Rc1 Rfc8 23.Rc3 Qd7 24.d4 Na4–+ 25.Rc2 Nb2 26.Rb2 c5 27.d5 b5 28.Rd2 Qf5 29.Bb1 Qg5 30.Rf4? Qf4–+ 31.Qc2 g6 32.d6 c4 33.d7 Rd8 0–1. belly – Zippy, ICS game, 1994.

6.Qd4 c5 7.Qe3 Be7 8.Qg3 Bf8 9.c4 d4=.

6.Qd4 Bd6 7.Nc3 Ne7 8.Qd2 Be6 9.e4 c6=.

6.Qd4 Bd6 7.Nf3 Ne7 8.Nc3 c5 9.bc6 Nbc6 10.Qd2 0-0 11.Nd5+= Be6 12.Nf4 Bc4 13.Rb1 Qc7 14.e3 Bf1 15.Nd5 Nd5= 16.Qd5 Kh8 17.Kf1 Rfd8 18.Qe6 Re8 19.Qb3 a4 20.Qc4 Qb6 21.Nd2 Ra5?? 22.Bc3+– Ne5?? 23.Rb6 Nc4 24.Nc4 Rd5 25.Nd6 Re6 26.Nf7 Kg8 27.Nh6! gh6 28.Re6 Rd1 29.Be1 Ra1 30.Rf6 Ra3 31.Rb6 Ra2 32.c4 a3 33.Rb3 Ra1 34.Rb7 a2 35.Ra7 Kf8 36.Ke2 Ke8 37.Rf1 Kd8 38.Ba5 (38.Ba5 Kc8 39.Ra1 Kb8 40.Rh7 h5 41.Rd1 a1Q 42.Rd8#) 1–0. marus1 – razobazam, internet, 2001.

6.Qd4 Be6 7.e4 Ne7 8.Ne2 c5 9.Qc5 Nf5+=.

6.Qd4 Ne7 7.e4 Be6 8.ed5 Nd5 9.Bc4 c5=.

6.Qd4 Bf5 7.Nc3 c6 8.0-0-0 Nd7 9.Qf4 g6=.

6.Bd4 c5 7.bc6 bc6 8.e3 c5 9.Bb2 Ne7 10.Bb5 Kf7 11.c4 Ba6 12.Nc3 Qb6? 13.Nd5+– Qb7 14.Ba6 Ra6 15.Rb1 Nd5 16.Qh5 g6 17.Qd5 Qd5 18.cd5 Rd6 19.Rd1 Bg7 20.Bc3 a4 21.Nf3 Rhd8 22.Ba5 R8d7 23.e4 Ra7 24.Rb1 Nd7 25.Bd2 Raa6 26.Kd1 f5 27.Ng5 Kg8 28.f3 Rdb6 29.Kc2 Rb3 30.Rb3 ab3 31.Kb3 Rb6 32.Ka4 Rb2 33.Ba5 c4 34.Bb4 fe4 35.Ne4 Rg2 36.Kb5+– Rc2 37.h3 h6 38.Rg1 g5 39.f4! Bd4? 40.Rd1 Be3 41.fg5 hg5 42.a4 Rh2 43.Ng5! Rb2? 44.Kc4 Nb6 45.Kb5 Nd7 46.Ne6 Kf7 47.a5 Nf6 48.Kc4 1–0. woschkat (1995) – vpliousnine (1980), net–chess.com, 2001.

6.Bd4 c5 7.bc6 Nc6 8.Nf3 Bd6 9.Nc3 Nge7=.

6.Bd4 Bd6 7.e3 c5 8.bc6 Nc6 9.Bb5 Nge7=.

6.Bd4 Ne7 7.e3 Nf5 8.Nf3 Be6 9.Bd3 Be7+=.

6.Bd4 Bg4 7.h3 Bh5 8.Nf3 c5 9.bc6 Nc6=.

6.Bd4 Nh6 7.e3 c5 8.Bb2 Be6 9.Nc3 Qd7+=.

6.Nf3 c5 7.bc6 bc6 8.Nd4 Qb6 9.Bc1 Bd6=.

6.Nf3 c5 7.bc6 Nc6 8.Nd4 Qb6 9.Ra2 Bc5 10.e3 Nd4 11.ed4 Bd6 12.Nc3 Ne7 13.Qh5 g6 14.Qf3 0-0 15.Nd5 Nd5 16.Qd5 Kg7 17.Qb5 Qc7 18.Be2 Qc2 19.0-0 Qc6 20.d5 Qb5 21.Bb5 Bf5 22.Bd4 Rfc8 23.a4 Kf7 24.Rb2 Rc7 25.Re1 Rac8 26.Bb6 Rc1 27.Ba5 Re1 28.Be1 Rc1 29.Re2 Bb4 30.Kf1 Bc2 31.f4 Ra1? 32.d6 Bd6? 33.Rc2 1–0. kamret (2215) – NN, GameColony.com, 2003.

6.Nf3 Bd6 7.Nd4 c5 8.bc6 bc6 9.c4 dc4=.

6.c4 dc4 7.de5 fe5 8.Nd2 Be6 9.e3 Nf6=.

6.c4 ed4 7.Nf3 (7.Bd4 c5 8.bc6 Nc6 9.c5 Nd4=) 7...Ne7 (7...dc4 8.Qd4 Nd7 9.Nbd2 Nb6=) 8.cd5 (8.Bd4 c5 9.bc6 Nbc6=) 8...Nd5 9.Nd4 0-0 (9...Be5=) 10.e3 Be5 11.Qc2 Kh8 12.Nd2 Re8 13.N2f3 Bg4 14.Ne5 fe5 15.Nf3 Bf3 16.gf3 c6 17.Rg1 Nf6 18.Rd1 Qc7 19.Rc1 Qe7 20.Qf5 Nbd7 21.bc6 bc6 22.Rc6 Rab8 23.Qc2 Qf7 24.Rg5 Qd5 25.Rc7 Qd6 (25...Qf3?? 26.Bg2 Qg2 27.Rg2+–) 26.Bc1 Qf8 27.Bh3 Rbc8 28.Bd7 Nd7 29.Rg7 Kg7 30.Rd7 Kf6 31.Qd2 Qc5 32.Bb2 Rg8 33.f4 (33.Rh7?? Rg1 34.Ke2 Qb5 35.Qd3 Rc2) 33...Rg1 34.Ke2 Ke6 35.Be5 (35.fe5?? Qc4 36.Qd3 Qg4 37.f3 Qg2; 35.Rh7 Qb5 36.Qd3 Rc2 37.Kf3 Qd3 38.Rh6 Kd5 39.Rd6 Kd6 40.fe5 Ke6 41.h4 Qf5) 35...Qc4 36.Rd3 Rd8 37.Bd4 Qb5 38.Qa2 Ke7 39.Qb3 Qf5 40.h3! Qh5 (40...Qh3) 41.Kd2 Qf5 (41...Qh3?? 42.Bf6! Kf6 43.Rd8+–) 42.Qb7 Ke8 43.e4 Qf4 1–0. Baer,Werner – Hanison,Bernard, TT–14.06 ETC, 2004.

6.e3 ed4 7.Bd4 c5 8.bc6 Nc6 9.Bb5 Nge7=.

6.e3 Ne7 7.de5 Be5 8.Be5 fe5 9.c4 0-0=.

6.e3 Nh6 7.c4 Bg4 8.f3 Be6 9.cd5 Bd5=.

6.de5 Be5 7.Be5 fe5 8.e4 Nf6 9.ed5 Qd5=.

7.Qd5?? Bb4 8.Qd2 Bd2 9.Nd2 Qe7 –+.

7.Nf3 d4 8.c3 dc3 9.Nc3 Nf6 10.e4 +=.

7.Nf3 d4 8.e3 de3!? 9.fe3 Nd7 =.

7.Nf3 Nf6 8.Ne5 0-0 9.e3 Bf5 10.Nf3 c6 11.Bd3 Bd3 12.cd3 cb5 13.Nc3 b4= 14.Nb5 ba3 15.Ba3 Ba3 16.Ra3 Nc6 17.0-0 Ng4 18.Qa4 Nb4 19.Nbd4 Qd6 20.Qb5 b6 21.h3 Nf6 22.Rc3 Nd7 23.Nc6 Rac8 24.Rfc1+/– Kh8 25.Nb4 Rc3 26.Rc3 Qb4 27.Qb4 ab4 28.Rb3 Kg8 29.Rb4 Kf7 30.Ng5+– Ke7 31.Nh7 Rf7 32.Rd4 Rf5 33.f4 b5 34.g4 Rf7 35.Rd5 b4 36.Rb5 b3 37.d4 Kd6 38.Ng5 Rf8 39.Rb3 g6 40.Rb7 Kc6 41.Ra7 Nf6 42.Rg7 Rg8 43.Rg8 Ng8 44.e4 Kb5 45.Kf2 Kc4 46.Ke3 Ne7 47.f5 gf5 48.gf5 Ng8 49.e5 Kd5 50.f6 Nf6 51.ef6 Kd6 52.f7 Ke7 53.d5 Kd6 54.Kd4 Ke7 55.h4 Kf8 56.d6+– Kg7 57.d7 Kh6 58.f8Q Kh5 59.d8Q Kh4 60.Qf4 Kh5 61.Qh8 Kg6 62.Qh7# (62.Qff6#) 1–0. orane – Caissa, caissa.com, 2006.

6.c4 f5 (6...e3 7.cd5 Ne7 8.fe3 Nd5 9.e4 Ne3+=) 7.cd5 Ne7 8.Nc3 Nd5 9.Nd5 Qd5=.

6.e3 Be6 7.c4 dc4 8.Nc3 Ne7 9.Ne4+= Bd5 10.Nd2+/– Ng6 11.Qc2 Bd6+/– 12.Ngf3 0-0 13.e4 Re8 14.Bc4 Bc4 15.Qc4 Kh8 16.0-0 Bf4 17.Rfe1 Nd7 18.Qd5 Nb6 19.Qb7 Na4 20.Nc4 Nb2 21.Nb2 Rb8 22.Qa6 Bd2 23.Nd2 Qd4 24.Nbc4 Nf4 25.Rab1 Nd3 26.Re3 Nc5 27.Qa5 Ne4 28.Rbe1 Nd6 29.Qc7 (29.Qc7 Ra8 30.Qc6+–) 1–0. themonkey (2120) – redisperanza (1715), GameColony.com, 2002.

6.e3 Be6 7.c4 dc4 8.Nc3 f5 9.d5 Bf7 10.Bc4 Nf6 11.Nh3+= Bd6 12.Ng5 Nbd7 13.Nf7 Kf7 14.Ne2 Ne5 15.Rc1 Nc4 16.Rc4 Qd7 17.Bf6 Qb5 18.Bg7 Qc4 19.Qa1 Rhf8=+ 20.Qf6 Kg8 21.Qg5 Qd5 22.Bh6 Kf7 23.Qh5 Ke7 24.Bf8 Rf8 25.0-0 Ba3 26.Nf4 Qf7 27.Qd1 Bd6–+ 28.Qa4 Bf4 29.ef4 b6 30.Rc1 Rc8 31.Qd4 Qf6 32.Qe3 Kf8 33.h3 c5 34.Qb3 Rd8 35.Qc2 Rd5 36.Rb1 a4! 37.Qa4 –/+. meheot – othorinoringologo, Yahoo, 2005.

6.e3 Be6 7.c4 Ne7 8.Nc3 f5 9.Nh3 dc4+=.

6.e3 Ne7 7.c4 Be6 8.Nc3 c6 9.bc6 Nbc6+=.

6.e3 Ne7 7.c4+= Be6 8.Nc3 Nd7 9.cd5+/– Nd5 10.Ne4 Be7 11.Qh5 Bf7 12.Qg4 g6 13.Qf3 0-0 14.Rc1 N7b6? 15.Nc5+– Bc5 16.dc5 Na4 17.Bd4 b6 18.e4 bc5 19.Ba1 c6 20.bc6+– Qe8? 21.Bb5 Nab6 22.Ne2 Rd8 23.c7 Qb5 24.cd8R Rd8 25.ed5 Re8 26.0-0 Nd5 27.Nf4 Nf4 28.Qf4 Bd5 1–0. COMP – COMP, 2002.

6.e3 f5 7.c4 Nf6 8.Nh3 Bd6 9.Nc3 dc4+=.

6.e3 Bf5 7.c4 c6 8.Nc3+= Ne7 9.Qb3 (9.bc6 bc6 10.Nge2 Ra7+=) 9...Bg4 (9...Nd7 10.cd5 cd5 11.Nd5+/–) 10.bc6+/– bc6 11.cd5 cd5 12.h3 (12.Rc1 Ra7+=) 12...Bf5 (12...Bc8 13.Rc1 Ba6 14.Be2=) 13.Rc1 Nbc6 (13...Kf7 14.f3 ef3 15.Nf3+=) 14.Bb5 Be6 (14...Rb8!?+=) 15.Ne4!+– Rb8 (15...de4 16.Qe6) 1–0. Eulenburg,M – Rapp,R, corr TT/5004 BdF, 1996.

6.e3 Bf5 7.c4+= c6 8.bc6 bc6 9.Nc3 Ne7 10.Rb1 Nd7 11.Nge2 Be6 (11...Rb8 12.Nf4+=) 12.Nf4 Bf7 13.cd5 cd5 14.Bb5 Rb8 15.Qb3 g5 16.Nfe2 (< 16.Ncd5 Nd5 17.Nd5 Bb4 18.ab4 Rb5 19.Nf6 Qf6–/+) 16...Bg7 17.Qa4 Be6 18.Nc1 0-0 19.0-0 Nf5 (19...f5 20.Nb3=) 20.Nd5 Bd5 21.Bd7 Rb7?? (better is 21...Nd6 22.Bc6 Nc4+=) 22.Bf5+– 1–0. b4_player (2195) – spleen74 (1810), GameColony.com, 2003.

6.e3 Bf5 7.c4 Ne7 8.Nc3 +=.

5.e3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 a5 5.b5).

5.e3 Be6 6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Be6 5.Nf3 a5 6.b5).

5.a4 b6 6.Qb3 bc3 (6...Nc6 7.cb4 Bb4 8.e4–/+) 7.Nc3 Na6 8.Qb5? (better is 8.Nf3–/+) 8...Nb4–+ 9.Rc1 (9.Qc4 Nc2 10.Kd1 Na1 11.Ba1–+) 9...Ba6 10.Qb4 (10.Nd5 Bb5 11.Nc7 Kf7 12.Nb5 Ra4–+) 10...Bb4 11.Nd5 Bd6 (11...Bc5 12.a5–+) 12.Ne3 (12.d4 Bb7 13.de5 fe5–+) 12...Ne7 13.f4 (13.Nf3 Bb7–+) 13...ef4 14.Ng4 0-0 15.Nf3 Bb4 (15...Re8 16.e4–+) 16.Rc2 (16.Nf2 Nd5–+) 16...Nd5 17.e4 (17.Rc1 Re8 18.a5 Qe7 19.ab6 cb6–+) 17...fe3 18.Nd4 ed2 19.Rd2 Qe7 20.Ne2 Bd2 21.Kf2 Qb4 22.Bd4 Be2 (22...Be1 23.Kf3 Qb3 24.Nc3 Bc3 25.Be3 Qd1 26.Kg3 Be1 27.Nf2–+) 23.Be2 Qd4 24.Kf1 Qa1 (25.Kf2 Qh1 26.Nh6 gh6 27.a5 Be1 28.Kf3 Qh2 29.Bb5 Qf4 30.Ke2 Rfe8 31.Kd3 Nb4; 24...Ne3 25.Ne3 Be3 26.g3 Qd5 27.Rg1 Ra4 28.Bc4 Qc4 29.Kg2 Qe2 30.Kh1 Qf3 31.Rg2 Ra1) 0–1. og4real – Caissa, Live Game Caissa's Web, 2004.

5.a4 d5 6.d4 –+.

6.Ba1 d5 7.d4 =+.

7.Qa4 cb4 8.cb4 Nc6 9.b5 Qa5 10.Nc3 Qa4 11.Na4 Nb4 12.Nb6 Nc2 13.Kd1 Na1 14.Nc8 Kd8 15.Nb6 Bc5 16.e3? Bb6–+ 17.Bc4 Ne7 18.Kc1–/+ Kc7 19.Kb2 Ra8 20.Nh3 Ra4 21.d3 d5 22.Ba2 Rb4 23.Ka1 Rb5 24.Rb1 Ra5 25.Rb4 Bc5 26.Rg4 g5 27.d4 ed4 28.ed4 h5 29.Rg3 Bd4 30.Kb1 g4 31.Nf4 Be5 32.Bd5 Nd5 33.Rd3 Nf4 (34.Rg3 Rb5 35.Kc2 Rb2 36.Kd1 Rf2–+) 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

7.Qb3 cb4 8.cb4 Na6 9.Bc3 Qe7 10.b5 Nc5 11.Qa3 Nd3 12.ed3= Qa3 13.Na3 Ba3 14.d4 ed4 15.Bd4 d5 16.g3 Kf7 17.Bh3 Ne7 18.Bc8 Rc8 19.g4 Rc1 20.Ke2 Ng6 21.Be3 Rb1 22.d4 Rb5 23.Nf3 Rb2 24.Nd2 Bd6 25.h3 b5 26.Rb1 Rb1 27.Nb1 Ke6 28.Nc3 b4 29.Nb1 f5 30.gf5 Kf5 31.Kd1 Nf4 32.h4 Kg4 33.Kc2 Kh4 34.Kb3 Kg4 35.Bd2 Nd3 36.Ka4 h5 37.Kb5 h4 38.Kc6 h3 39.Kd6 h2 40.Kd5 h1Q 41.Ke6 Qb1 42.Kf7 Qa2 43.Kg7 Qd2 44.Kf6 Qf2 45.Ke6 Qd4 46.Ke7 Kf5 47.Ke8 Ke6 48.Kf8 Qh8# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

7.Qb3 cb4 8.cb4 Na6 9.Bc3 Qe7 10.e3 Nb4 11.Bb4 Qb4–/+ 12.Qb4 Bb4 13.Bc4 Ne7 14.Nc3 Bc3 15.dc3 d5 16.Bb5 Bd7 17.Bd7 Kd7 18.Nf3 Ke6 19.Kd2 Rc8 20.Rb1–/+ Rc7 21.g4 Nc8 22.h4 Nd6 23.Rb6 Ke7 24.Kc2 Ne4 25.Rb3 Nf2 26.g5 fg5 27.hg5 Ke6 28.Nh4 Ne4 29.g6 hg6 30.Ng6 b5 31.Rb5 Rc3 32.Kb2 Re3 33.Nf8 Kf7 34.Nd7 Ke6 35.Nc5?? Kf5–+ 36.Ne4 Ke4 37.Rb7 g5 38.Rg7 Rg3 39.Kc2 Ke3 40.Kc3 d4 41.Kc4 Ke4 42.Kc5 g4 43.Kd6 d3 44.Rg5 d2 45.Re5 Kd3 46.Rd5 Ke2 47.Rd2 Kd2 48.Ke5 Rd3 49.Kf4 g3 50.Ke4 g2 51.Kf4 Re3 52.Kg4 g1Q 53.Kf4 Qf2 54.Kg4 Rg3 55.Kh4 Qh2# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

7.b5 Qa5 =+ (8.Bb2 Qb5–/+). excalibur – Caissa, Live Game Caissa's Web, 2004.

7.bc5 Bc5 8.d4 ed4 9.cd4 Bb4 10.Bc3 Bc3 11.Nc3 Ne7 12.Nf3 0-0 13.e3 d5 14.Qb3 Qc7 15.Be2 Be6 16.0-0 Nbc6 17.Nb5 Qb6 18.h3 Na7 19.Rb1 Nb5 20.Qb5 Qb5 21.Rb5 Rb8 22.Nd2 Bd7 23.Rb6 Bc6 24.Nb3 Ra8 25.Bb5 Ra3 26.Bc6 bc6 27.Nc5 Kf7 28.Nd7 Ra7 29.Nc5 Kg6 30.Ne6 h5 31.Nd8 Rc7 32.Ne6 Rc8 33.Nc5 Kf5 34.Rb7 Re8 35.Rc7 g5 36.Nb7 g4?? 37.hg4 hg4?? 38.Nd6+– Ke6 39.Ne8 1–0. horacyad2010 – niki67, internet, 2011.

9.e3 Ne7 10.d4 ed4 11.ed4 Qa2 12.dc5 Qb2 13.c4 Na6=+ 14.Bd3 Qb4 15.Qd2 Nc5 16.Ke2 Nd3–+ 17.Qd3 d5! 18.cd5? Bf5 19.Qg3 Qb5 20.Kf3 Qd3 21.Kf4 Nd5# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

9.e4 Bf2 10.Kf2 Qb6 11.Kg3 Qb2 =+.

11.Qa3 Qb6 12.Qb4 Qb4 13.cb4 Nc6 14.b5 Nb4 15.Na3 Ne7 16.d3 Be6 –/+.

11.Qa3 Qb6 12.Qb4 Qb4 13.cb4 Nc6 14.b5 Nb4 15.Na3 Ne7 16.d3 Bf5 17.f3 Kf7 18.e4 Ra8 19.Nb1 Ra1 20.ef5 Rb1 21.Kf2 Nf5 22.g4 Rb2 23.Ke1 Nd6 24.b6 Nc8 25.Nh3 Ra2 26.Nf2 d4 27.Ne4 Nd3!! 28.Kd1 Nb6 29.Rg1 Nf4 30.Nd6 Kf8 31.Nb7 Ra1 32.Kd2 Nbd5 33.Nc5 Ne3 34.Nd3 Rd1# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

11.Qa3 Qb6 12.Qb4 Qb4 13.cb4 Nc6 14.b5 Nb4 15.Na3 Ne7 16.d4 0-0 17.de5 fe5 –/+.

11.Qa3 Qb6 12.Qb4 Qb4 13.cb4 Nc6 14.b5 Nb4 15.Na3 Ne7 16.g3 0-0 17.Bh3 Bh3 18.Nh3 Ra8 19.f4?? Ra3 20.Kf2 Ra5 21.fe5 fe5 22.b6 Ra6 23.Ng5 Rb6 24.d3 Rf6 25.Kg2 Nc2 26.e4 Ne3 27.Kh3 Rh6# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

12.Qb4 Qb4–/+ 13.cb4 Nbc6 14.b5 Nb4 15.e3 Bf5–+ 16.f3 0-0 17.g4 Bg6 18.Bg2? Ra8 19.f4 ef4 20.ef4 Nd3 21.Kf1 Nf4 22.Bf3 Ra3 23.Kf2 Nd3 24.Ke2 Ne5 25.Bg2 Ng4 26.Nf3 Bd3 27.Ke1 Ra1# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

12.Qb5!? Qb5 13.Nb5 =+.

12.Nb5 0-0 13.Nd6 Nf5 14.Nc8=+ Qa1 15.Qd1 Qd1 16.Kd1 Rc8 17.h4 Nd7 18.g4 Ra8 19.Bg2 Ne7 20.Nh3 Ra1–+ 21.Kc2 Ra2 22.Kd3 e4 23.Ke3–/+ Ne5 24.f3 N7g6 25.h5 Nh4 26.Rh2 Nc4 27.Kf2 Nd2 28.fe4 Ng2 29.Rg2 Ne4 30.Kf3 Kf7 31.e3 Nd2 32.Kf4 b5 33.g5 Ra4 34.Kf5?? g6 35.hg6 hg6# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

12.Nc2 Nbc6 13.c4 dc4 14.Qc4 Nd4 15.f3 –/+.

12.Nc2 Nbc6 13.c4 Bf5 14.cd5 Nd5 15.e3 Ncb4 16.Nb4 Nb4 17.f3 Nc2 18.Ke2? Qa1 19.e4 Nd4 20.Kf2 Nb3 21.ef5 Nd2 22.Ne2 0-0 23.g3 Qa7 24.Kg2 Rc8 25.f4 Qe3 26.fe5 Qf3 27.Kh3 Nf1 28.Rg1 Ne3 29.Nf4 Qg4# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

12.Nc2 Nbc6 13.e3 0-0 14.Bb5 Bf5–/+ 15.Kd1 Ra8 16.d4?? Bc2 17.Kc2 Qa1 18.Qb1 Ra2 19.Kc1 Qc3 20.Kd1 Qd2 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

12.Nc2 Nbc6 13.e4 de4 14.Bc4 Qc5 =+.

12.c4 dc4 13.Nc4 Qa1 14.Qd1 Qd1 15.Kd1 =+.

12.c4 Qc5 13.e3 Nbc6 14.Qa4 0-0 15.Nf3 Bf5 16.Qb3? Ra8–+ 17.Nb5 Ra1 18.Ke2 dc4 19.Qb2 Bd3 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

12.c4 Qc5 13.e3 Nbc6 14.Nb5 d4 =.

12.c4 Qc5 13.e3= Nbc6 14.cd5 Qc1=+ 15.Ke2 Nd5 16.Nc2?? Be6–+ 17.Qb7 Qc2 18.Qa8 Kf7 19.Qh8 Nc3 20.Kf3 Qe4 21.Kg3 Qg4 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

12.e3 0-0 =.

12.g3 Nbc6 13.Bh3 0-0 14.e3 Bh3 15.Nh3 Ra8 16.Nc2 Qa2 17.Qa2 Ra2 18.Kd1 Kf7 19.g4 e4 20.g5 Ne5 21.gf6 Kf6 22.Kc1 Nd3 23.Kb1?? Rb2 24.Ka1 Rc2 25.Rd1 g5 26.f4 ef3 27.Rb1 Rd2 28.Rb7 Rh2 29.Ng5 f2 30.Nh7 Rh7 31.Rb1 Ne1 32.Re1 fe1Q 33.Kb2 Rh2 34.Kb3 Qb1 35.Ka4 Ra2# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

12.Ba3!? Ba3 13.Na3 =+.

12.d4 ed4–/+ 13.ed4 Bd4 14.Ne2 Bc5 15.Ba3 Ba3 16.Na3 0-0 17.Nd4?? Nd4–+ (18.Qb4 Qa3 19.Qd4 Qc1 20.Qd1 Qc3 21.Kf1 Bg4–+) 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

13.0-0 Bg4 14.Ng3 =+.

14.Ng3 Bc2 15.Qc2 Qb5 =.

15.Ba3? Ba3 16.Qa3?? Qb5–+ 17.Qa7 Qe2 (18.Qb7 Re8–+; 17...Bb1 18.Rd1–+) 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

15.c4!? Qb4 16.Qb4 Bb4 17.de5 fe5 18.Nbc3 =+.

15.Bc4 dc4 16.Qc4 Rf7 17.Qc5 =.

15.Bc4 Bd6 16.de5 fe5 –/+.

15.dc5 Nb5 16.c4 Nc7 17.cd5 Ncd5 18.Ng3 +=.

15.dc5 Nb5 16.c4 Bg4 17.f3 Bf3 18.gf3 +–.

16.Qb5 Nb5 17.Na3 Bd3 18.Re1 Na3 19.Ba3 Ra8 20.Bb2 Ra5 21.Nc1 Bc4 22.f3 Kf7 23.g4 Rc5 24.e4 Rb5 25.Ba3 Ng6 26.ed5 Rd5 27.Re4 b5 28.Ne2 Rd2 29.Ng3 Bd5 30.Rb4 Nh4 31.Rb5 Nf3 32.Kf1 Bc4 33.Ne2 Bb5 34.Kf2 Nh2 35.Bb4 Re2 36.Kg3 Nf1 37.Kf3 e4 38.Kf4 g5 39.Kf5 Ng3# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

16.Qb5 Nb5 17.Na3 Bd3 18.Re1 Na3 19.Ba3 Ra8 20.Bb4? Be2–+ 21.f4 Ra2 22.g3 Kf7 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

16.Qb5 Nb5 17.Na3 Bd3 18.Re1 Na3 19.Ba3 Ra8 20.Bc1 Ra5–+ 21.f4 Nf5 22.fe5 fe5 23.g3 Rc5 24.Bd2 Nd6 25.Kf2 Ne4 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

16.Qb5 Nb5 17.Na3 Bd3 18.Re1 Na3 19.Ba3 Ra8 20.Bc1 Ra5–+ 21.f4 Nf5 22.fe5–/+ fe5 23.Ng3? Ng3–+ 24.hg3 Be4 25.Kf2 Rc5 26.Bd2 Ra5 27.Rh1 Ra2 28.Ke2 Kf7 29.Rh5 Ke6 30.Rg5 g6 31.Rg4 Kf5 32.Rh4 h5 33.Kd1 Bg2 34.Rb4 Ra1 35.Kc2 Be4 36.Kb2 Rb1 37.Ka3 Rg1 38.Rb7 Ra1 39.Kb4 Rb1 40.Kc5 Rb7 41.c4 Rc7 42.Kb4 Rc4 43.Kb5 Rc2 44.Bb4 Rg2 45.Bd6 Rg3 46.Be5 Ke5 47.Kc5 h4 48.Kb4 Re3 49.Kc5 Rb3 50.Kc6 h3 51.Kd7 h2 52.Ke7 h1Q 53.Kf7 Qh7 54.Ke8 Rb8# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

16.Qb5 Nb5 17.Ng3 Ra8 –/+.

6.Qb3 cb4 7.ab4 Ra1 8.Ba1 Na6 9.Bc3 Qe7 10.e3 Nb4 11.Bb4 Qb4 12.Qb4 Bb4 13.Bc4 Ne7 14.e4 b6 15.g4 d5 16.ed5 Bg4 17.f3 Bh5 18.h4 Bf7 19.Nc3 0-0 20.Kd1 Rd8 21.Nge2 Nd5 22.Nd5 Bd5 23.Bd5 Rd5 24.Ng3 Rd2 25.Kc1 Rg2 26.Nf5 g6 27.Ne3 Bd2 28.Kc2 Be3 29.Kd3 Bc5 30.Re1 Rf2 31.Ke4 Rd2 32.Rh1 Rd4 33.Ke3 Rh4 34.Kd3 Rh1 35.Ke4 Rd1 36.f4 Rd4 37.Kf3 Rf4 38.Ke2 h5 39.Kd3 h4 40.Kc3 Rd4 41.Kc2 e4 42.Kc3 e3 43.Kc2 e2 44.Kc3 e1Q 45.Kc2 Qd1 46.Kc3 Bb4 47.Kb2 Rd2 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

6.b5 Qb6 7.e3 d5 8.f4 Nd7 9.fe5 Ne5 10.Nf3 Bd6 11.Ne5+= Be5 12.Be5 fe5 13.Qh5 Qg6 14.Qe5 Ne7 15.Nc3 0-0?? 16.Nd5 Nd5+/– 17.Qd5 Be6 18.Qc5 Rac8?? 19.Qd4 Rfd8 20.Qb4 h6 21.g3?? Kh7?? 22.Be2 Rf8 23.Qd4 Rf6 24.Bd3 Bf5 25.Bf5?? Qf5= 26.e4 Qg4?? 27.Qd3?? Rcf8?? 28.e5+– Rf5 29.Rf1 g6 30.Rf5 Rf5 31.Qd7 Kg8 32.Qe8?? Rf8–+ 33.Qe7 h5 34.Rc1?? Qe4 35.Kd1 Qf3 36.Kc2+/– b6?? 37.Qe6 Rf7? 38.Kb2 Kg7 39.Qb6 h4 40.gh4 Qh3 41.Qd4 Qh2 42.e6 Kf8 43.ef7 Kf7 44.Rc6 g5 45.Qf6 Ke8 46.Re6 Kd7 47.Qe7 Kc8 48.Rc6 Kb8 49.Qd8 Ka7 50.Qb6 Ka8 51.Rc8 Qb8 52.Qb8 1–0. dtpwaldi – rubinocb, internet, 2011.

6.b5 d5 7.a4 Bf5 8.e3 Ne7 9.d4 Bb1 10.Qb1 Qa5 11.Kd1 Nd7 12.Bd3 (better is 12.de5 Ne5 13.Qc2–/+) 12...cd4–+ 13.ed4 e4 14.Bc2 Rc8 15.Ne2 g6 (better is 15...Nb6–+) 16.Bc3?? (better is 16.Bc1–/+) 16...Rc3–+ 17.Nc3 Qc3 18.Ke2 Nf5 19.Ra2 (19.Kf1 Nd4 20.Bd1–+) 19...Nd4 20.Kf1 Qc4 21.Kg1 (21.Bd3 ed3 22.g3–+) 21...Ne2 22.Kf1 Nc3 23.Kg1 Nb1 24.Rb2 Nd2 25.h4 Qf1 26.Kh2 Bd6 27.Kh3 Qh1 28.Kg4 Qg2 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

6.e3 Bd6 7.d4 e4 (7...Ne7 8.de5 fe5 9.e4=+) 8.Nc3 (8.Qh5 Ke7=) 8...c6=+ 9.Qb3 b5 (9...Ne7 10.f3 f5 11.b5=+) 10.Nge2 (10.Bb5 cb5 11.Qd5 Ra6 12.Qe4 Ne7 13.Nb5 Qd7 14.Nd6 Rd6+=) 10...Nd7 (10...Ne7 11.a4 ba4 12.Ra4=) 11.Ng3 (11.Nb5!? cb5 12.Qd5+=) 11...Nb6= 12.a4 ba4 13.Na4 Na4 14.Ra4 Ra4 15.Qa4 Qb6 16.Bc3 Ne7 17.Be2 0-0 18.Qb3 (18.0-0 Be6=) 18...f5=+ 19.0-0 Be6 20.Rb1 Rb8 21.b5 (21.Qa2!?=+) 21...cb5-/+ 22.Qb5?? (22.Bd2 b4-/+) 22...Qb5 (better 22...Qd8-+) 23.Rb5=+ (23.Bb5? Bd7 24.Bd7 Rb1 25.Nf1 Kf7-+) 23...Rb5 24.Bb5 Kf7 25.Nf1 g5 26.Nd2 f4 27.Nb3 Nf5 28.Bd2 fe3 29.fe3 Kf6 30.g3 h5 31.Be2 h4 32.g4 Nh6 33.h3 Nf7 34.Bb5 Nd8 35.Kf2 Bg3 36.Ke2 Ke7 37.Bb4 Bd6 38.Ba5 (38.Bd6 Kd6 39.Ba6 Bd7=) 38...Nb7 39.Bc3 (39.Bb6 Bd7 40.Ba6 Bc6=) 39...Bc7 (39...Bd7!? 40.Ba6 Ba4=+) 40.Bc6= Nd8 41.Ba4 (41.Ba8 Nf7=) 41...Bd7=+ 42.Bd7 Kd7 43.Nc5 Kc6 44.Bb4 Bd6 45.Ba5 Be7 (45...Bc5? A) worse 46.dc5 Nb7 47.Bc3 Nc5-/+ (worse 47...Kc5 48.Bf6+/-); B) 46.Bd8 Kd7 47.Bg5+- (47.dc5?! Kd8 48.Kd2 Kd7=)) 46.Bd8 Bd8 47.Ne6 Be7 48.Ng7 Bf6 49.Nf5 Bd8 ½-½. dannysmet (2025) - sefko (2055), Rated Blitz game, lichess.org, 2021.

6.e3 Bd6 7.Be2 Be6 8.Nf3 c6 9.0-0 Ne7 10.d3 0-0 11.Nbd2 Nd7 12.Nb3 Qc7 13.h3 Ng6 14.Rc1 Qd8 (14...b6 15.d4=+) 15.Na5 (15.Nc5 Nc5 16.bc5 Bc7=) 15...Rb8 16.e4 (16.Nb3 Qb6=) 16...d4 17.Nd2 Bc7 18.Ndc4 f5 19.Bf3 fe4 20.Be4 Nf4 21.Kh2 Qh4 22.Qf3 (better 22.Kg1!?-/+) 22...Nh3-+ 23.gh3?? (23.Qg3 Qg3 24.Kg3-+) 23...Rf3 24.Bf3 Qh3 25.Kg1 Qf3 (25...Qf3 26.Nd2 Qg4 27.Kh1 Rf8 28.Nc6 Rf6 29.Ne7 Kh8 30.Nf5 Rf5 31.Nf3 Rf3 32.Rc7 Rh3; 25...e4 26.Ne5 Be5 27.Rfe1 ef3 28.Re5 Qg2) 0-1. dannysmet (2070) - Lemko1944 (2025), Rated Blitz game, lichess.org, 2020.

6.e3 Be6 7.d4 Nd7 8.Nf3 e4 9.Nfd2 Bd6 10.Qb3 Ne7 (better 10...f5=+) 11.Ne4!+/- 0-0 (11...de4 12.Qe6 Pinning (12.Qe6 Deflection)) 12.Nd6+- cd6 13.Nc3 Nb6 14.Be2 (14.Bd3 Nc4+-) 14...Rc8 15.Bf3 (15.0-0 Nc4 16.Rfc1 f5+-) 15...Nc4+/- 16.0-0 (better 16.Rc1+/-) 16...g5? (better 16...Nd2 17.Qa4 Nf1 18.Rf1 Qe8+=) 17.Rfd1 (17.Rfc1 g4 18.Be2 f5+-) 17...g4 18.Be2 h5 (18...Ng6 19.Bd3+-) 19.Rac1 Qd7 20.Ba1 b5 21.a4 ba4 22.Na4 Qb5 (22...h4 23.Nc3+-) 23.Nb2 (23.Nc3 Qb7+-) 23...Rc7 24.Nd3 Ra8 25.Nf4 Ra3?? (25...Bf7 26.Bc3+-) 26.Qb1 (better 26.Qa3! Na3 27.Bb5 Nb5 28.Rc7 Nc7 29.Rc1+-) 26...Bf7 (26...Bf5 27.Bd3 Bd3 28.Rd3+-) 27.Bb2 (27.Rd3 Qb6+-) 27...Ra4 (better 27...Rb3!? 28.Qc2 Qb4+/-) 28.Bc3+- Rca7 29.Be1 Ra1 (29...Ra3 30.Bd2+-) 30.Qd3 (better 30.Qa1!? Ra1 31.Ra1 Qb7+-) 30...R1a3 31.Rc3 Kg7? (better 31...Qb4 32.Rb1 Qa4+-) 32.Ra3 Ra3 33.Qc2 (better 33.Qa3! Na3 34.Bb5 Nb5+-) 33...Ra8 (33...Qa4 34.Qa4 Ra4 35.h3+-) 34.Rc1 Rc8 (34...Qa4 35.Qb1+- (35.Bc4?! Qc2 36.Rc2 dc4+/-)) 35.e4 (better 35.Bc3+-) 35...Na3?? (better 35...Qb7 36.Qd1 Nb2+-) 36.Qc8 (36.Bb5?! Rc2 37.Rc2 Nc2+=) 36...Nc8 37.Bb5 (37.Rc8 Qb7 38.Rc3 A) worse 38...Qb4 39.Nh5 (39.Nd5? Qb1 40.Ra3 Qe1 41.Bf1 Qe4-+) 39...Kg6 40.Nf4 Kg5 41.Bd2 (worse 41.Nd5 Qb1 42.h4 Kh6=+) 41...Qb1 42.Bf1+=; B) 38...Nb5 39.Bb5 Qb5 40.Nd5 Bd5 41.ed5 Qd5 42.Rc7 Kg6-/+) 37...Nb5 38.Nd5 (better 38.Rc8 de4 39.d5 Kh6+-) 38...Nca7 (38...Bd5 39.ed5 (39.Rc8?! Be4 40.Re8 d5+-) 39...Ne7 40.Ra1+-) 39.Rd1 (39.Nf4 Nd4 40.Rc7 Nab5 41.Nh5 Kf8 42.Rc8 Ke7+-) 39...Bd5 40.ed5 Nc7 41.Bd2 Nd5 42.Be3 (42.Ra1 Nb5+-) 42...Nb5 (42...Nb4 43.d5 Nc8 44.Rd4+-) 43.Ra1 Nbc3 44.Ra5 (44.Ra6 Nb4 45.Rd6 Kf7+-) 44...Kg6 (44...Nb4 45.Rh5 Nbd5 46.Kf1+-) 45.b5 1-0. dannysmet (2040) - carpetcleaner123 (2075), Rated Blitz game, lichess.org, 2020.

6.e3 Be6 7.d4 e4 8.Qb3 Bd6 9.Nc3 c6 (better 9...f5=) 10.Ne4!+/- Bc7 (10...de4 11.Qe6 Pinning (11.Qe6 Deflection)) 11.Nc5 Bc8 12.Nf3 Ne7 13.Bd3 0-0 14.0-0 b6 15.Na4 Bd7 16.Nc3 Kh8 17.Rac1 (better 17.h3+/-) 17...c5? (better 17...Bg4 18.Qc2 Bf3 19.gf3 Qd7+/-) 18.dc5+- (18.Nd5?! Ba4 19.Nc7 Bb3 20.Na8 Bd5 21.Nb6 Qb6 22.dc5 Qb7+=) 18...bc5 19.bc5 Nbc6 20.Nd5 (better 20.Nb5!?+-) 20...Be6 21.e4 Nd5 22.ed5 Bd5 23.Qd1 Rb8 24.Bc3 Bb3 (24...Bf4 25.Rb1 Ra8 26.a4+-) 25.Qd2 Qe7 (25...Bd5 26.Be2+-) 26.Bb4 (26.Rfe1!? Qf7+-) 26...Rfd8 27.Qc3 Bf7 28.Rfe1 Qd7 29.Bb1 Bf4 30.Rc2 Bg6 31.Rce2 Bb1 32.Rb1 Ne5 (32...Qc7 33.Rbe1+-) 33.Ne5 Be5 34.Qc1 Qc7 35.g3 Qc6 36.Rb3 Rd4 37.Rc2 Rbd8 38.Qb1?? (better 38.Rd2+-) 38…Rd1-+ (38...Rd1 39.Be1 Rb1 40.Rb1 Qa4-+) 0-1. dannysmet (2055) - AriaJipang (2055), Rated Blitz game, lichess.org, 2021.

6.e3 Be6 7.d4 e4 8.Nd2 f5 9.Ne2 Nf6 10.g3 (10.Nf4 Bd7=) 10...Bf7 11.Nf4 Bd6 12.h4 Nbd7 13.Be2 0-0 14.Nb3 b6 15.b5 Qe7 16.a4 Ra7 17.Qc2 Rfa8 18.Nd2 Nf8 19.0-0 Ne6 20.Ne6 Be6 21.Rfc1 h6 (21...Qf7-/+) 22.Qc3? (better 22.Nb1!?=+) 22...Ra4-+ 23.Ra4 Ra4 24.Nb3 Ra8 25.Nc5 bc5 (25...Bc8 26.Na6 Bd7 27.Nc5-/+) 26.dc5 Bc5 (26...Bg3!? 27.fg3 Nd7-/+) 27.Qc5= Qc5 28.Rc5 Ra7 (28...Ra2 29.Bf6 gf6 30.Rc7 Re2 31.b6+/-) 29.Bd4 (29.Rc6 Bd7 30.Rc5 Kf7=) 29...Rb7 30.Rc6 Kf7 31.Rc5 (31.Be5 Ne8=) 31...Ke7 32.Bd1 (32.Be5 Kd7=+) 32...Nd7 33.Rc3 g6 34.Ba4 (34.Be2 Nb6 35.Bb6 cb6-/+ (worse 35...Rb6 36.Rc7 Bd7 37.Rc1=)) 34...Nb6 35.Bb3 Nc4 36.Ba4 Nd6 37.Bc5 (37.Rc5-/+) 37...Kf7?? (better 37...Bd7-+) 38.b6 Nc8 (38...Nc4!? 39.Bc6 Rb6 40.Bb6 cb6-/+) 39.Bc6=+ Rb6 40.Bb6 Nb6 41.Kf1 Ke7 42.Bb5 Kd6?? (better 42...Bd7 43.Bd7 Kd7-/+) 43.Rc6+= Ke7 44.Rc7 Kf6 45.Rc6 Nc4 46.Bc4 (46.Ke1 Ke5+=) 46...dc4= 47.Ke2 Ke5 48.Kd2 g5 49.hg5 (49.h5 Kf6+=) 49...hg5= 50.Kc3 Attacking the isolated pawn on c4 50...Bd7?? (better 50...Bd5 51.Ra6 Bf7=) 51.Rc5+- Kd6 (51...Kf6 52.g4+-) 52.Rc4 (52.Kc4!? Be6 53.Kd4 g4+-) 52...Be6 53.Ra4 Ke5 54.Ra5 Kf6 55.Kd4 Bb3 56.Ra6 Kf7 (56...Be6 57.g4! fg4 58.Re6 Ke6 59.Ke4+-) 57.Ke5 Bd1 (57...Bc4 58.Rf6 Kg7 59.Rf5+-) 58.Kf5 1-0. opperwezen - jimakos (2725), lichess.org, 2016.

5.d4 ab4 6.cb4 Nc6 7.e3 Nh6 (7...ed4 8.ed4 Qe7 9.Be2=) 8.Qh5 (better is 8.b5!? Ne7 9.de5+/–) 8...g6=+ 9.Qd1 Bg4 (9...ed4!? 10.b5 Ne5 11.ed4 Nc4 12.Bc4 dc4 13.Qe2 Qe7=) 10.f3+= Bf5 (10...Be6 11.b5 Ne7 12.de5+=) 11.Bb5 (11.b5 Na5 12.de5 Be7+=) 11...Nf7 (11...e4 12.Nc3 Qd7 13.fe4+–) 12.Nd2 (12.e4 de4 13.Bc6 bc6=) 12...Bd7 13.Ne2 Bd6 (13...Bh6 14.f4=) 14.Nb3 (14.0-0 0-0=) 14...Qe7 (14...Ne7 15.Bd7 Qd7 16.de5 Ne5 17.Nf4=+) 15.0-0 (15.Nc5 Bc5 16.dc5 Ncd8 17.Bd7 Qd7=) 15...ed4 16.Bd4 0-0 (16...Nd4 17.Bd7 Qd7 18.Ned4= (< 18.Qd4 Be5 19.Qd2 Ba1–/+; 18.Nbd4?! Qe7=; 18.ed4?! 0-0=)) 17.Bc6 Bc6 (< 17...bc6 18.Nc5+/–) 18.Ng3 (18.Na5!?=) 18...Ba4 (18...Bg3 19.hg3 Bb5 20.Re1=) 19.Qd3 Bg3 (19...c6 20.Bc5=+) 20.hg3 Ne5 21.Qc3 b6 22.Rfc1 Rfe8 23.Nd2= Ra7 24.Rab1 Bb5 25.f4 Ng4 26.Nf1 Kg7 27.Re1 Rea8 28.Ra1 h5 29.Nh2 Nh6 30.Bf6?? Qf6–+ 31.Qf6 Kf6 32.e4 de4 33.Re4 Ra3 34.Rae1 R8a4 35.Re6 Kg7 36.Re7 Nf7 37.Nf3 Ra1 38.Ra1 Ra1 39.Kh2 Kf6 40.Rc7 Nd6 41.Ne5 Ra4 42.Nd7 Bd7 43.Rd7 Ke6 44.Rg7 Kf6?? 45.Rd7 Ne4 46.Rd4 Kf5 47.Rd5 Kg4 48.Rb5 Ra3 49.Rb6 Rg3 50.Rg6 Kf4 51.Rg3 Ng3 52.b5 Ne4 53.Kh3 Kg5 54.b6 Nc5 55.Kg3 Ne4?? 56.Kh3 Nd6 57.Kg3 Nb7 58.Kh3 Nd8 59.Kg3 Nc6 60.b7 Nb8 61.Kh3 Nc6 62.Kg3= Nb8 63.Kh3 Kf4?? 64.Kh4+– Ke4 65.Kh5 Kd5 66.g4 Nd7? 67.g5 Kc6 68.Kg6 Kc7 69.Kf7 Ne5 70.Ke6 Nd3 71.Kf6 Kb7 72.g6 Nf4 73.g7 Nh5 74.Kf7 Ng7 ½–½. Farklempt – Zippy, ICS, 1994.

5.d4 ed4 6.Qd4 Nc6 7.Qe3 Qe7 8.Qd3 =+.

5.e3 ab4 6.cb4 Nc6 (6...Bd6 7.d4 Ne7 8.de5 fe5 9.Nf3=+) 7.b5 (7.Bb5 Bf5=) 7...Nce7 8.f4 (8.d4 e4=) 8...ef4=+ 9.Qh5 (9.ef4!? Ng6 10.Qh5=+) 9...g6–/+ 10.Qh4 (better is 10.Qf3!? fe3 11.Qe3–/+) 10...fe3–+ 11.Bf6 ed2 (11...Nf6 12.Qf6 Rg8 13.Qc3–+) 12.Nd2 Nf6 13.Qf6 Rg8 14.Ngf3?? (better is 14.Qf3–+) 14...Bg7 15.Ne4 (15.Qh4 Ba1 16.Be2–+) 15...de4 16.Rd1 (16.Qf4 Ba1 17.Qe4 Ra3–+) 16...Bf6 17.Rd8 Kd8 (18.Bc4 ef3 19.Bg8 Ra3–+) 0–1. Farklempt – Zippy, ICS, 1994.

5.e3 Bd6 6.Bb5 c6 7.Ba4 Nh6 8.Nf3 Bg4 9.h3=+ Bh5 10.g4 Ng4 11.hg4+= Bg4 12.d3 e4–/+ 13.de4 de4 14.Rg1? Bf3–+ 15.Qd4 Qe7 16.Nd2 Nd7 17.Nf3 ef3 18.0-0-0 Be5 19.Qg4 ab4 20.Bc6 bc6 21.cb4 Bb2 22.Kb2 Ne5 23.Qd4 h5 0–1. alaamattar (2190) – knightmare (2455), net–chess.com, 2006.

5.e3 e4 6.Ne2 Bd6 7.Nd4 Ne7 8.Be2 0-0 9.0-0 Nf5 10.Nb5 Be5 11.f4 ef3 12.Bf3 c6 13.Nd4 Nd4 14.ed4 Bd6 15.d3 Re8 16.Nd2 Nd7 17.Nb3 ab4 18.ab4 Ra1 19.Ba1 Nf8 20.Nc5 b6 21.Nb3 Qe7 22.Bb2 b5 23.Na5 Bd7 24.Nb7 Bc8 25.Nd6 Qd6 26.Bc1 Bf5 27.Be2 Bg6 28.Bf4 Qd7 29.Bg4 Bf5 30.Bf5 Qf5 31.Bd6 Qe6 32.Bf8 Qe3 33.Kh1 Kf8 34.h3 Qe2 35.Qb1 h5 36.Qa1 Qd3 37.Qc1 Re2 38.Rf3 Qd2 39.Qg1?? Re1–+ 40.Qe1 Qe1 41.Kh2 h4 42.Rd3 Kf7 43.Rf3 g5 44.Rd3 f5 45.Rf3 Kg6 46.Rd3 g4 47.hg4 fg4 48.g3 Qf2 49.Kh1 hg3 50.Rg3 Qg3 51.c4 Qf2 52.c5 g3 (52...Qe2 53.Kg1 g3 54.Kh1 Qf1) ½–½. horacyad2010 – stefangebala (1830), internet, 2011.

5.e3 Be6 6.d4 e4 (6...Bd6 7.de5 fe5 8.Qh5 g6 9.Qe2=+) 7.Nd2 Qd7 (7...ab4 8.ab4 Ra1 9.Qa1=+) 8.b5= c6 9.Qb3 (9.bc6 Qc6 10.Rb1 Nd7=) 9...a4 10.bc6 bc6 11.Qc2 Ne7 (11...Bd6 12.c4=) 12.c4+= Nc8 13.c5 Be7 14.Ne2 0-0 15.Nf4 Bf7 16.Be2 g5 17.Nh3 f5 (17...Be6=) 18.g3 (better 18.f4!?+=) 18...f4=+ 19.Ng1 Bg6 20.0-0-0 (20.gf4 gf4 21.Qc3 f3=) 20...f3-/+ 21.Bf1 Ra7 22.h4 g4 23.h5 Bf5 24.Qc3 h6 25.Kc2 Rb7 26.Rb1 Na7 (26...Bf6 27.Kd1-/+) 27.Rc1? (better 27.Qa5!?=+) 27...Nb5-/+ 28.Bb5 (28.Qb4 Ra7 29.Bb5 cb5-/+) 28...Rb5-+ 29.Nb1?? (better 29.Ba1-+) 29...Na6 (better 29...Bd8 30.Kd1 Qb7 31.Qe1 Rb2 32.Nd2-+) 30.Qd2 (30.Nd2 Nc5! 31.Ba1 Nd3-+) 30...Rfb8 (better 30...Qb7 31.Ba1 Rb2 32.Kd1 Qb3 33.Ke1 Rd2 34.Nd2 Qa3-+) 31.Nc3 (31.Ba1-+) 31…Rb2 (31...Rb2 32.Kd1 Rd2 33.Kd2 Nc5-+) 0-1. dannysmet (2030) - benben75 (2070), Rated Blitz game, lichess.org, 2020.

5.e3 Bf5 6.d4 Nd7 7.Qb3 c6 8.c4 ab4 9.ab4 Nh6 (9...Ra1 10.Ba1 Qe7 11.b5=+) 10.Nf3 (10.Ra8!? Qa8 11.Nd2=) 10...Ra1=+ 11.Ba1 Qb6 (11...dc4 12.Bc4 Nb6 13.Be6 Bb1 14.Qb1=) 12.c5 (worse 12.cd5 Bb4 13.Nc3 Bc3 14.Qc3 Qb1 15.Kd2 Ng4-/+) 12...Qa7 13.Bb2? (better 13.Na3 e4 14.Nd2=) 13...Bb1-+ 14.de5 Qa2 (14...b6 15.ef6 gf6 16.b5 Nc5 17.Qc3-+) 15.Qc3 (15.Qa2!? Ba2 16.Bd3 fe5 17.Ne5 Ne5 18.Be5 Ng4-/+) 15...Be4 (15...Be7 16.Qd2-+) 16.ef6 Nf6 17.Be2 Qb1 18.Bc1 Qc2 (18...Bf3 19.Bf3 b6 20.0-0 bc5 21.Qe5 Be7 22.Qe6 Qb4 23.Qc6 Kf7 24.Bd5 Nd5 25.Qd5 Kg6 26.f4=+) 19.Qe5 (19.Qa3 Nf5 20.Bd1 Qb1-/+) 19...Kf7 (19...Be7 20.Qb2-+) 20.Ng5 (better 20.Qb2-+) 20...Kg6 21.0-0 Qe2 22.f3 (22.Nh3 Qg4 23.f3-+) 22...Bd3 23.f4 Qf1 0-1. dannysmet (2020) - LAUKDAUN (2060), Rated Blitz game, lichess.org, 2020.

5.ab4 Ra1 6.Ba1 Bb4!? 7.c3 Be7 –/+.

5.ab4 Ra1 6.Ba1 Bb4 7.Bc3 Bc3 8.Nc3 ed4 9.Qd4 Nc6 10.Qg4 Kf8 11.e3 d6 (12.Qh4 Ne5=). VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

5.ab4 Ra1 6.Ba1 Bb4 7.Bc3 Bc3 (8.Nc3 ed4 9.Qd4 Ne7–/+) 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

5.ab4 Ra1 6.Ba1 ed4 7.Qd4=+ Nc6 8.Qe4 Qe7 9.Qe7 Nge7 10.b5 Nb4 11.Na3 d5 12.Bc3 Na2 13.Ba5 Nf5 14.b6?? cb6–+ 15.Bb6 Bb4 16.Kd1 Nc3 17.Kd2 Na4 18.c3 Ba3 19.Ba5 Nd6 20.Bb4 Nc3! 21.Ba3 Nb1 22.Kc1 Na3 23.e3 Ne4 24.Nh3 Bh3 25.gh3 Nf2 26.Rg1 Kf7 27.Bg2 Rc8 28.Kb2 Nc4 29.Kb1 Ne3 30.h4 Rc4 31.h5 Rg4 32.Bd5 Nd5 33.Rg4 Ng4 34.h3 Nge3 35.Kc1 Nf4 36.Kd2 Nf5 37.Kc3 Nh3 38.Kc4 Nf4 39.h6 gh6 40.Kb5 h5 41.Kb6 h4 42.Kb7 h3 43.Kc6 h2 44.Kc5 h5 45.Kc4 h4 46.Kc3 h3 47.Kd2 h1Q 48.Kc3 Qb1 49.Kc4 h2 50.Kc5 h1Q 51.Kc4 Qc6# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

5.Bd3 g6 6.h4 (6.ab4 Ra1 7.Ba1 Bb4=+) 6...Nc6 (6...d5!?–/+) 7.h5= g5 8.h6 Bh6 (< 8...Nh6 9.Rh6 Bh6 10.Qh5 Ke7 11.Qh6+/–) 9.Qh5 Ke7 (9...Kf8 10.Bb5=+) 10.e4 d5 11.Bb5 de4 12.Bc4 Be6 13.Be2? (better is 13.Be6 Ke6 14.ab4 Ra1 15.Ba1–/+) 13...Nd4 14.Bd4 (14.Bd1 b3 15.cb3 Nb3 (15...Bb3?! 16.Bd4 Qd4 17.Bb3 Qa1 18.Qf7 Kd8 19.Qd5 Kc8 20.Qe6 Kb8 21.Qe8 Ka7 22.Qa4 Kb6 23.Qb4 Kc6 24.Bg8+=) 16.Bb3 Bb3–+) 14...ed4 15.Bg4 (15.d3 Kf8–+) 15...Qd5 (better is 15...f5 16.Bd1 Kf6–+) 16.f3?? (16.Be6 Qe6 17.Rh3–+) 16...ef3 (better is 16...f5 17.Qh2 fg4 18.Qc7 Ke8 19.fg4–+) 17.Bf3 Qe5 18.Ne2 (18.Kf1–+) 18...d3 19.Bb7 (19.c3–+) 19...Qa1 20.0-0 (20.Kf2 Rb8 21.cd3 Rb7 22.ab4 f5–+) 20...de2 21.Qe2 Qd4 22.Rf2 (22.Kh1 Ra5 23.ab4 Qh4 24.Kg1 Qb4 25.Qf3–+) 22...ba3 23.Ba8 a2 24.Qb5 a1Q 25.c3 Qda4 26.Bc6 Qb5 27.Bb5 Qb1 28.Bf1 g4 29.Kh2 g3! 30.Kg3 Qe1 31.c4 Qe5 32.Kf3 Qf4 33.Ke2 Qd2 34.Kf3 Qe3 0–1. dado3 – Caissa, Live Game Caissa's Web, 2004.

5.Be5 fe5 6.Qh5 g6 (6...Ke7 7.Qe5 Kf7 8.Qd5 Kf6 9.Qf3 Ke5 10.Qf4 Ke6 11.Qe4 Kd6 12.Qb4 c5 13.Qf4 Ke7 14.Qe5 Kf7 15.Bc4 d5 16.Bd5 Kg6+/-) 7.Qe5+/- Kf7?? (better 7...Qe7 8.Qh8 Nf6+/-) 8.Bc4+- (8.Qh8?! Bg7 9.Qh7 Nf6+-) 8...d5 9.Bd5 Qd5 10.Qd5 Be6 (10...Kg7 11.Qe5 Nf6 12.Qc7 Nbd7+-) 11.Qb7 Ra3 (11...Ra6 12.Qb8 Bd6 13.Nh3 Bh3 14.gh3+-) 12.Na3 (12.Qb8 Ra1 13.Qc7 Ne7 14.Qf4 Kg8 15.Qb4 Ba2+/-) 12...ba3 13.Qb8 Nf6 14.Qc7 (better 14.Nf3 Nd5 15.Ng5 Ke7 16.Ra3 Bg7+-) 14...Be7 15.Nf3 Rc8 16.Ng5 Ke8 17.Ne6 (17.Ne6 Rc7 18.Nc7 Kd7 19.Nb5+-) 1-0. allyouneedisluft (2410) - jimakos (2590), Rated Bullet game, lichess.org, 2017.

5.Qh5 g6 6.Qd1 d5 –/+.

6.Ba1 Bb4 7.Be5 fe5 8.Qh5 Kf8 9.Bc4 (9.Qe5 Nc6 10.Qf4 Nf6 11.c3–+) 9...d5 10.Bb3 Nc6 11.Nf3 g6 12.Qg5 Qg5 13.Ng5 Be7 14.Nf3 e4 (15.Ng1 Nf6–+) 0–1. slavisa99 – Caissa, Live Game Caissa's Web, 2004.

6.Ba1 Bb4 7.Nf3 Nc6 8.Bb5 Na7 9.c4 (better is 9.Bc3!? Nb5 10.Bb4–/+) 9...Nb5–+ 10.cb5 d5 11.0-0 Bd6 (11...Bg4 12.d4 e4 13.Qb3–+) 12.d4 e4 13.Nfd2 0–1. saxobob – Saj Chess, FICS rated blitz game, 1995.

6.Ba1 Bb4 7.Nf3 d5 8.Bb5 c6 9.c3 –/+.

6.Ba1 Bb4 7.Qh5 g6 8.Qh4 Nc6 –/+.

5.Be5 Qe7 (better is 5...ba3!? 6.Bb2 Qe7=) 6.Bc7= d5 7.Bb8 Qe4 8.Qe2 Rb8 9.Qe4 de4 10.Bb5 Kd8 11.ab4 f5 12.c3 Bd6 13.Ne2 Nf6 14.d4 ed3 15.Bd3 Re8 16.Nd2 Bd7 17.0-0 Ne4 18.Nc4 Bc7 19.Rfd1 g6 20.Ne3 Bh2 21.Kf1 Rc8 Attacks the backward pawn on c3 (21...Be5 22.Be4 fe4 23.Ra5+=) 22.Bb5 (better is 22.Be4!? Re4 23.g3+–) 22...Bd6+= 23.Bd7 Kd7 24.c4 Ke6 25.c5 Bb8 26.Nc4 Red8 27.Nb6 Rd1 28.Rd1 Re8 29.Nd4 Kf7 30.Nb5 Re6 31.f3 Ng3 32.Kf2 Re2 33.Kg1 g5 34.Nd6 Bd6 35.cd6 (35.Rd6?! f4 36.Rd1 Rb2=) 35...Re8 36.d7 Rd8 37.Rd6 f4 38.Nd5 h6 39.Kf2 Kg7 40.Nc7 Kf8 41.Nd5 Kg7 42.Nb6 Nf5 43.Re6 Kf7 44.Re5 Nd6 45.Ke2 Kf6 46.Rc5 Ke6 47.Kd3 Nf5 48.Rc7 Nd6 49.Rc1 Kf6 50.Kd4 Nf5 51.Kd5 Ke7 52.Ke5 Ne3 53.Rc7 Kf7 54.Rb7 Ng2 55.Kd6 Nh4 56.Kc7 Rd7 57.Kd7 Nf3 58.Kd6 Kg6 59.Nd5 h5 60.Rc7 h4 61.Rc3 (61.b5 h3 62.b6 h2+–) 61...Nd2? (better is 61...Ne1 62.Ke5 f3 63.Rc6 Kg7+–) 62.b5 (better is 62.Rc2 Nb3 63.Ke5+–) 62...Ne4+/– 63.Ke5 Nc3 64.Nc3 f3 65.Ne4 h3 66.b6 h2 67.Nf2 Kh5 68.b7 h1Q 69.Nh1 Kg6 70.b8Q f2 71.Nf2 Kg7 72.Qd6 1–0. onny555 (1900) – eliminator_2000 (2000), gameknot.com, 2012.

6.Ba1 Nc6 7.b5+= Nb8 8.Nc3 c6 9.bc6 bc6 10.Qb1 h5?? 11.Qb8+– Rh6 12.Nf3 Rg6 13.Be2 f5 14.ef5 Rf6 15.Nh4 Bd6 16.Bh5 g6 17.Bg6 Kf8 18.Qb3 Be7 19.Ne4 Rg6 20.Ng6 Kg7 21.Be5 Nf6 22.Ng5 d6 23.Qf7 Kh6 24.Bf6 Bf6+– 25.h4 Bf5 26.Qh7# 1–0. aji – Besiktasli, VOGChess (year?).

7.Nc3 Nc6 8.Nd5 Bd6 9.Nf3 Nge7 10.Ne7 Qe7 11.Nh4 g6 12.Bb5 (12.Nf3!?–/+) 12...f5–+ 13.g3 fe4 14.Qe2 Nd4 15.Qc4 (15.Bd4 ed4 16.Bc4 c6–+) 15...Nb5 16.Qb5 Bc5 17.0-0 (17.Qc4 Rf8 18.0-0 d6–+) 17...c6 18.Qc4 (18.Qe2 d5 19.d3 Bh3–+) 18...d5 19.Qc3 d4 20.Qc4 Rf8 21.f4 (21.Bb2–+) 21...b5 22.Qa2 ef4 23.Rf4 (23.d3–+) 23...Rf4 24.gf4 Qh4 25.Qg8 Bf8 26.Qa2 Qe1 27.Kg2 Bh3! 28.Kh3 (28.Kh3 Qf1 Mate attack) 28...Qf1 29.Kg3 Qf3 30.Kh4 Be7 0–1. Benassi,Aspasio – COMP, 2001.

7.Nc3 Nc6 8.Nf3 Nge7 9.Nh4 0-0 10.Nf5 (10.Bc4!? Kh8 11.0-0–/+) 10...Nf5–+ 11.ef5 d5 12.Be2 (12.g4 b6–+) 12...Bf5 13.0-0 Nd4 14.f3 (14.d3–+) 14...Bc2 15.Qe1 c6 16.d3 (16.Kh1–+) 16...Qa5 17.Nd1 (17.Kh1–+) 17...Be1 (17...Be1 18.Bd4 ed4–+) 0–1. Benassi,Aspasio – COMP, 2001.

7.Bd3 Nc6 8.Ne2 Nge7 9.0-0 0-0 10.c3 Bc5 11.Bc4 Kh8 12.d4 ed4 13.cd4=+ Bb6 14.Nd2 d5–/+ 15.ed5 Nd5 16.Nb3 Bg4 17.f3 Ne3 18.Qd3? Nc4 19.Qc4–/+ Bh5 20.Rd1 Bf7–+ 21.Qa4 Qd5 22.Nf4?? Qb3 23.Qb3 Bb3 24.Rd3 Bc4 25.Rd2 Ra8 26.Bc3 Kg8 27.g4 Ra2 28.Ra2 Ba2 29.Ne2 Bc4 30.Kf1 (30.Kf2–+) 0–1. Reynier – jonnyboy373, ChessWorld.net, 2004.

7.Nf3 d5 8.ed5 Qd5 9.c3 Be7 10.Be2?? Qa2–+ 11.Bb5 c6 12.Bd3 Qa1 13.0-0 Be6 14.Qe2 Nd7 15.Bc2 Qa2 16.Bd3 Nc5 17.c4 Nd3 18.Qd3 Bc4 19.Qc3 Bf1 (19...Bf1 20.Kf1 Qb1 21.Ke2 Bd6–+) 0–1. Administrator – COMP, 2000.

4.c4 b5 5.e4 bc4 6.Bc4 Bb7 7.d3 (7.Nc3+=) 7...c5 (7...d5 8.ed5 Bd5 9.Nf3 Bc4 10.dc4 Qd1 11.Kd1+=) 8.Qb3 (8.bc5 d5 9.cd6 Qb6 10.Qh5 g6+/–) 8...Nh6 9.Nd2 (9.Bc1!? Qc7 10.Bh6 gh6 11.Nc3+/–) 9...cb4= 10.ab4 Nc6 11.Bc3 Ne7 (11...Rb8 12.Ngf3=) 12.Ngf3 (12.Qa4 Nc6+=) 12...d5= 13.ed5 Bd5 (better is 13...Nd5!? 14.0-0 Nc3 15.Qc3 Qb6=) 14.0-0+/– Rc8 (14...Qd6 15.Rfe1 Bc4 16.dc4+–) 15.Qa4 (15.Ra6 Nhf5+–) 15...Qd7 (15...Bc6!? 16.Qa3 Bb7+=) 16.Qd7+/– Kd7 17.Ba6?? (better is 17.Ra6 e4 18.Bb5 Bc6 19.Bc6 Nc6 20.Ne4 Nb4 21.Bb4 Bb4 22.Rb1+–) 17...Rc3–+ 18.Bb5 (18.Bc4 Rc2–+) 18...Ke6 (18...Nc6!? 19.d4–+) 19.Ra6 Kf7 20.Re1 (20.Bc4 Nhf5–+) 20...Nhf5 (20...Nc8 21.Rb1–+) 21.Kf1 (21.g4 Nh6–+) 21...g6 (21...Nc8 22.Rb1–+) 22.Ra7? (better is 22.Ne4!? Be4 23.de4–/+) 22...Bh6 (better is 22...Nd6 23.Bd7 Rc2–+) 23.d4? (23.Bc4 Rd8 24.Nb1 Bc4 25.Nc3 Rd3 26.Ne2–+) 23...Bd2 (worse is 23...Nd4 24.Bd7–+) 24.Nd2 Nd4 (24...ed4?! 25.g4 Ra8 26.Ra8 Ba8 27.gf5 Nf5 28.Bc4 Kf8 29.Ra1–/+) 25.Be2 (25.Ba4 Rb8 26.Rb1 Rb4–+) 25...Ne2 (25...Rb8 26.Rb1–+) 26.Re2 (26.Ke2 Rb8–+) 26...Rc1 27.Re1 Rhc8 (better is 27...Bg2!? 28.Ke2 Re1 29.Ke1–+) 28.b5 –+. wlittle (1955) – fled (1705), net–chess.com, 2002.

4.c4 d5 5.e3 Be6 6.Nf3 (6.cd5 Bd5 7.d4 ed4 8.Bd4 Nc6=) 6...dc4+= 7.Bc4?? (better is 7.Qc2 Qd5 8.d3+=) 7...Bc4–+ 8.Qc2 (8.d4 e4 9.Nfd2 Bd3–+) 8...Be6 (8...Bd3!? 9.Qb3–+) 9.0-0 (9.d4 a5–+) 9...Nc6 (9...a5 10.b5–+) 10.Nc3 (10.d4 Bd6–+) 10...Bd6 (10...Bc4 11.Rfc1–+) 11.Ne4 1–0. Goldmund,Heike – Puzanov,Vasyl, FICGS, 2017.

4.d4 ed4 5.Nf3 c5 6.bc5 Bc5 7.Bd4 Bd4 8.Nd4 Nc6 9.e3 Nge7 10.Bd3 Nd4 11.ed4 Qb6 12.0-0 Qb2 13.Nd2 Qd4 14.Re1 d5 15.Qe2 Qc5 16.c4 d4 (16...Kd8!?+/–) 17.Nb3 Qd6 18.c5 Qd7 (18...Qc7 19.Qh5 Kd8 20.Nd4+–) 19.Rad1 g6 20.Nd4 Qc7 21.Ne6 Be6 22.Qe6 Rf8 (22...Rd8 23.Bc2 Qc5 24.Ba4 b5+–) 23.Bc2 Qc5 24.Qd7 Kf7 25.Re7! Qe7 26.Bb3 1–0. Schulz,Hans_Juergen – Valica,Slavo, TT–16.33 ETC, 2005.

4.d4 e4 5.c4 d6 6.e3 Ne7 7.Ne2 g5 (better is 7...Bg4!?+=) 8.Ng3+– d5 9.Nd2 (better is 9.cd5 f5 10.Nc3+/–) 9...h6? (better is 9...c6+/–) 10.Qh5+– Kd7 11.cd5 Nd5 (11...f5 12.Nf5! Nf5 13.Qf7 Qe7 14.Qf5 Kd8 15.Qe4 a5+–) 12.Qf7 (12.Nge4?! c6+–; 12.Nde4?! Kc6+–) 12...Qe7 (12...Kc6 13.Bc4 (13.Nge4?! Qd7 14.Rc1 Kb6 15.Qd7 Nd7+–) 13...Nb4 14.d5 Kb6 15.Bd4 (worse is 15.ab4 Nd7 16.Bd4 c5 17.dc6 Kc6+–) 15...Bc5 16.Bc5 (worse is 16.ab4 Bd4 17.ed4 Ka7+–) 16...Kc5 17.ab4 Kb6 18.0-0+–) 13.Qd5 Qd6 14.Qd6 cd6 15.Nge4 Nc6 16.Nf6 Kd8 17.Nd5 Be7 (17...b5 18.Nb6 Rb8 19.d5+–) 18.Ne7 (better is 18.Nb6 Rb8 19.d5 Ne5+–) 18...Ne7 19.Bd3 b5 20.Ne4 Kd7 (20...Bf5 21.d5 Rg8 22.Kd2+–) 21.Nf6 Kd8 22.d5 Bb7 (22...Rf8 23.h4 g4 24.Rc1+–) 23.e4 Rf8 24.Ng4 h5 25.Ne3 (25.Nf6 h4 26.Bd4 Ng6+–) 25...g4 (25...Ng6 26.Bg7 Rf7 27.Bh6+–) 26.0-0 (26.h3 g3 27.fg3 Re8+–) 26...a5 (26...Ng6 27.Rad1+–) 27.Bb5 ab4 28.ab4 Rc8 (28...Rb8 29.Ra5+–) 29.Rac1 (better is 29.Bd4 Rc7 30.Bb6 Nc8+–) 29...Rb8 30.Bc6 (better is 30.Bd3!? Ng6+–) 30...Bc6 31.dc6 Rb5 (31...Rb4 32.c7 Kd7 33.Nc4+–) 32.c7 (32.Rc4 Rf4+–) 32...Kc8 (32...Kd7 33.Rfd1 Rb4 34.Nc4+–) 33.Bc3 (better is 33.Nc4 Kd7+–) 33...Kc7 (33...Re8+–) 34.Bg7 Kb6 (34...Kd7 35.Bf8 Ng6 36.Bg7 Rb4 37.Nd5+–) 35.Bf8 Ng6 36.Nd5 (36.Bd6 h4 37.Rc8 Ne5+–) 36...Ka6 (36...Rd5 37.ed5 Nf8+–) 37.Bd6 h4 38.Ra1 Kb7 39.Rfc1 g3 40.hg3 hg3 41.fg3 Rb6 42.Rc7 Kb8 43.Nb6 1–0. Fournier,Frederic (1760) – jilb (1770), Active, 2004.

4.e3 b5 5.Nf3 c5? (better 5...d5!? 6.a4 Bb4 7.ab5 Ne7+-) 6.bc5 (6.Ne5!? g6 7.Qf3 Ra7 8.bc5 Bb7+-) 6...Bc5 (better 6...Nc6 7.d4 d5+-) 7.Be2?? (better 7.Ne5 fe5 8.Qh5 Kf8 9.Qf3 Nf6 10.Qa8+-) 7...Ne7+= 8.c4 (better 8.Nc3 d5 9.d4 ed4 10.Nd4 (10.ed4?! Bb6=+) 10...Bd4 11.Qd4+=) 8...b4?? (better 8...bc4!? 9.Bc4 d5=) 9.ab4 (9.d4!? ba3 10.Bc3 ed4 11.ed4 Ba7+-) 9...Bb4+- 10.0-0 0-0 11.Qb3 (11.Bd3 d6+-) 11...Nbc6 12.Nc3 Bc5 13.Rfd1 (13.Ne4 Rb8 14.Qa2 d6+-) 13...Rb8 14.Qa2 d6 (14...Nb4 15.Qa5 Nc2 16.Qd8 Rd8+=) 15.Na4 (15.d4 ed4 16.ed4 Nb4+-) 15...Bb4 (better 15...Nb4!? 16.Qb1 Bf5=) 16.d4+- e4 17.Nd2 Bd2 18.Rd2 (18.c5 Kh8 19.Rd2 Nb4+-) 18...Kh8 (18...Nb4 19.Qa3+-) 19.Ba3 White intends c5 19...Nb4 (19...a5 20.Rb2+-) 20.Bb4 (20.Qb1 a5+-) 20...Rb4+- 21.c5 a5 (21...Bb7 22.Qe6 dc5 23.Nc5+-) 22.cd6 (22.Nc3 Bf5+-) 22...Qd6+- 23.Nc5 Qb6 (23...Bf5!?+-) 24.Qa5+- Rb1 (24...Qa5 25.Ra5 Bb7 26.Ra7+-) 25.Rd1 Rd1 (25...Qa5 26.Ra5 Rb2 27.Bc4+-) 26.Bd1 Qa5 27.Ra5 f5 28.h3 (28.Bb3 h6+-) 28...Nd5 (28...Rd8 29.Bb3+-) 29.Bb3 (better 29.Ne4 Nb6 30.Nc5 h6+-) 29...Nf6? (29...Nc7+-) 30.Ra8 h6 (30...h5 31.Be6 Be6 32.Rf8 Bg8 33.h4+-) 31.Be6 Be6 32.Rf8 Bg8 33.f3 (33.Ne6 Kh7 34.Nf4 Bc4+-) 33...ef3 (33...Kh7 34.fe4 fe4 35.Kf2+-) 34.gf3 Nh7 (34...Kh7 35.e4 fe4 36.fe4+-) 35.Rf5 g6 36.Re5 Kg7 (36...Ng5 37.Kg2 Bc4 38.Re7+-) 37.Ne6 (better 37.d5 Nf8+-) 37...Kf6 38.Nc5 Nf8?? (38...Kg7 39.d5 Nf8+-) 39.Kg2 (39.f4 Be6 40.Kg2 Bd7+-) 39...g5 40.Kg3 Ne6 (40...Bc4+-) 41.Ne6 Be6 42.Re6! Ke6 43.Kg4 Kf6 44.Kh5 1-0. retiponziani (1920) - STEVE4T60E (1755), ChessWorld.net, 2018.

4.e3 c5 5.bc5 Bc5 6.d4 Bb6 (6...Qb6!? 7.Bc3 ed4 8.ed4 Be7+=) 7.de5+/– Nh6? (better is 7...Nc6!? 8.Nf3 Bc7 9.ef6 Nf6+/–) 8.ef6+– gf6 9.Qd6 Qe7?? (9...Nf5 10.Qd5 d6 11.Bd3+–) 10.Qf6 (better is 10.Qb6 d6 11.Nc3+–) 10...Qf6 11.Bf6 Rf8? (11...Rg8+–) 12.Bg7 Ng4 13.Bf8 Kf8 14.Nf3 d6 15.Nbd2 Bf5 16.Bd3 Bd3 17.cd3 Nc6 (17...Ba5 18.Rc1+–) 18.0-0 (18.Rb1 Ba5 19.Rb7 Ra7 20.Ra7 Na7+–) 18...Re8 (18...Ba5 19.Nc4 Bc7 20.e4+–) 19.d4 (19.Rfb1 Ba5 20.Rb7 Re7+–) 19...h5 (19...Ba5 20.Nb3 Nf6 21.Rfc1+–) 20.h3 Nf6 21.Rfb1 Bc7 22.Rb7 Bd8 23.Rab1 Nd7 (23...Re7 24.Re7 Ke7 25.Rb7 Ke8 26.Nc4+–) 24.Nc4 (better is 24.Rd7 Be7+–) 24...Ke7 (24...d5 25.Rd7 dc4 26.Rd6+–) 25.Nfd2 (better is 25.d5 Ncb8+–) 25...d5 26.Ne5 Nce5 27.de5 Ba5 28.Nf3 Rb8 (28...Rc8 29.Ra7 Rc7 30.Ra6 Bc3+–) 29.Rb8 Nb8 30.Rb8 Bc7 (30...Bc3 31.Rb3 Ba5 32.Rb7 Kd8 33.e6+–) 31.Rb7 Kd8 32.e6 Bd6 33.Rd7 Ke8 34.Rd6 Ke7 35.Ra6 d4 36.Nd4 1–0. Fournier,Frederic (1775) – baronred, Active, 2005.

4.e3 d5 (---> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 a6).

4.e3 Bd6 5.d4 Qe7 6.Bd3 ed4 7.Bd4 Be5 8.Qh5 g6 9.Bg6! hg6? 10.Qh8 Bd4 11.Qg8 Qf8 12.Qg6 Kd8 13.ed4 Qe8 14.Qe8 Ke8 15.Ne2 d6 16.h4 Nc6 17.c3 Bf5 18.Nd2 Bd3 19.Nf4 Bf5 20.Nd5 Kd7 21.Nf6 Ke7 22.Nd5 Ke6 23.Nc7 Kd7 24.Na8 Kc8 25.Nb6 Kc7 26.Nd5 Kc8 27.Ne3 Be6 28.d5 Bd5 29.Nd5 Ne5 30.Ke2 Ng4 31.f3 Ne5 32.h5 Nf7 33.g4 Nh6 34.g5 Nf5 35.Rag1 Kd7 36.h6 Nh6 37.gh6 (37.gh6 Ke6 38.Rh5 Kd7 39.h7 b6 40.Rg7 Kc6 41.h8Q b5 42.Qe8) 1–0. amator111 (1755) – fredson2010, internet, 2011.

4.e3 Qe7 5.c4 d6 6.Be2 Nc6 7.Nf3 Bd7 (7...e4 8.Nd4+=) 8.d4+= ed4 (8...e4 9.Nfd2+=) 9.Nd4 Nd4 10.ed4 0-0-0 11.0-0 f5 (11...d5 12.Nc3 dc4 13.Bc4+/–) 12.c5 (12.b5!?+/–) 12...dc5+= 13.dc5?? (better is 13.bc5 Bc6 14.Re1+=) 13...Bb5–+ (13...Bb5 14.Bb5 Rd1 15.Rd1 ab5–+) 0–1. GuestBFTK – GuestLWVQ, freechess.org, 2017.

4.e3 Ne7 5.c4 d5 6.cd5 (6.d4 ed4 7.Bd4 Nbc6=) 6...Nd5 7.Bc4 (7.d4 ed4 8.Qd4 Nc6 9.Qe4 Nde7=) 7...Be6 8.Bd5 (8.Qc2 c5 9.bc5 Bc5=) 8...Bd5 (8...Qd5 9.Nf3–/+) 9.Nf3 b5 (9...a5 10.b5+=) 10.Nc3 (10.d4 ed4 11.Bd4 a5+=) 10...Bb7 (10...Bc4 11.d4 a5 12.Nd2 ab4 13.ab4 Ra1 14.Ba1 ed4 15.Nc4 bc4 16.ed4 Qe7 17.Kd2=) 11.0-0 Nd7 (11...a5 12.Ne5 fe5 13.Qh5 Kd7 14.Qf5 Ke8 15.Qe5 Qe7 16.Qb5 c6 17.Qh5 g6 18.Qc5=) 12.Nh4 (better is 12.d4=) 12...g5?? (better is 12...g6=) 13.Qh5+– Ke7 14.Nf5 (better is 14.Ng6 hg6 15.Qh8+–) 14...Ke6+= 15.e4 (15.Qg4 c5+=) 15...Nb6 (15...Be4 16.Ne4 Kf5 17.Rae1+/–) 16.Qg4 (16.d4!?+/–) 16...Kf7+= 17.Qh5 Ke6 18.d4! ed4 19.Nd4?? (better is 19.Ne2 Qe8 20.Nfd4 Ke7 21.Nf5 Ke6 22.Qh3+/–) 19...Qd4–+ 20.Rad1 Qc4 (20...Qe5 21.Ba1 Bd6 22.Qg4 Kf7 23.Qh5 Kg7 24.Nd5 Qh2 25.Qh2 Bh2 26.Kh2 Bd5 27.ed5–+) 21.Qg4 (21.Nd5!? Qe4 22.Rfe1 Bd5 23.Re4 Be4 24.Re1+–) 21...Kf7–+ 22.Qh5 (22.f4 a5 (22...Be4?! 23.Ne4 Qe4 24.Rfe1–/+) 23.fg5 ab4 24.ab4 Bb4 (24...Qb4 25.Rf6 Kg7 26.Na4 Bc5 27.Nc5+–) 25.Nb5 Bc5 (25...Qb5?? 26.Rf6 Kg7 27.Qe6 Qd7 28.Rd7 Nd7 29.Qf7) 26.Kh1 Qe4 (26...Qb5 27.Rf6 Kg7 28.Qe6 Qd7 29.Rd7 Nd7 30.Qf7) 27.Rf6 Kg8+=) 22...Kg8 23.Nd5 (23.Qf3 Bg7–+) 23...Bd5 24.Bf6 Bg7?? (better is 24...Be4 25.Qg5 Bg6–+) 25.Qg5 Kf7 (25...Qf1 26.Rf1 Kf7 27.Qg7 Ke8 28.Qe7) 26.Qg7 Ke6 (26...Ke8 27.Qe7) 27.Qe7 1–0. GuestBXJD – GuestHJWY, freechess.org, 2016.

4.e3 h6 5.Qh5+/– Ke7 6.Nf3 (6.Be5!? g6 7.Qh4+/–) 6...Qe8+= 7.Qe8 Ke8 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.cd5 cd5 12.Nc3 Be6 13.Be2 Ne7 14.0-0 Nf5 15.h3 Bd6 16.Rac1 Nc6 17.Nb3 b6 (17...Rc8!?+/–) 18.Na4+– b5? (18...Nce7 19.Nb6 Rb8 20.Nc5 Rb6 21.Ne6+–) 19.Nac5?? (better is 19.Nb6 Nfe7 20.Na8+–) 19...Bc5 20.Rc5 Rc8 21.Rfc1 Kd7 (better is 21...Nce7+=) 22.Na5?? (better is 22.R5c3!? Nb8 23.Nc5 Ke7 24.Bg4+/–) 22...Nfe7 (better is 22...Na5!? 23.ba5 Nd6+=) 23.Nc6 Nc6 24.f3 f5 25.fe4 fe4 (25...de4?? 26.d5 Ne7 27.de6 Ke6 28.Rc8 Rc8 29.Rc8 Nc8 30.Bg7+–) 26.Bg4 (26.a4 A) 26...ba4? 27.Ba6 Kd6 28.b5+– (worse is 28.Bc8 Rc8 29.b5 Ne7+–); B) 26...Nb4 27.ab5 ab5 28.Bb5 Kd8 29.Rc8 Bc8+/–) 26...Bg4 (26...Ne7=) 27.hg4 (better is 27.Rd5!? Ke6 28.Rdc5+=) 27...Kd6 28.R1c2 Rhf8 29.Rf2 Rf2 30.Kf2 g5 31.Kg3 Rc7 32.Bc1 Rf7 33.Rc2 Rf1 34.Kh2 Rf7 35.Kg1 (35.Kg3 Rf6 36.Bd2–/+) 35...Rf6 36.Bd2 Rf7 37.Be1 Rf6 38.Bg3 Kd7 39.Rc5 Rf7?? (better is 39...Ne7+=) 40.Rd5+/– Ke6?? (40...Ke7 41.Be5+/–) 41.Rc5 (better is 41.Rd6 Ke7 42.Rc6+–) 41...Kd7+/– 42.d5 Ne7 43.d6 Nc6 44.Rf5 Rf5 45.gf5 Nb8 (45...Nd8 46.Be5=) 46.f6 (better is 46.Kf2!?+/–) 46...Nc6?? (better is 46...Ke6 47.f7 Nd7–/+) 47.f7+– 1–0. Fournier,Frederic (1610) – SNAPE, Active, 2007.

4.e4 d5 5.ed5 Qd5 6.Nc3 Qd8 (6...Qe6 7.Qh5 g6 8.Qh4=) 7.Bc4+= Bf5 (7...Nc6 8.Nge2+=) 8.Qf3 (8.Nf3 Bg4+=) 8...Bc8 (8...Qc8 9.d3+=) 9.Qh5 (9.Nge2 Nc6+=) 9...g6 10.Qh4 (10.Qe2 Nc6+=) 10...Nh6= 11.Ne4 Nd7 (11...Bg7 12.f4=) 12.f4 (12.Be6 Bg7+=) 12...Nf5= 13.Qh3 (13.Qf2 Nd6 14.Nd6 Bd6+=) 13...Qe7 (13...ef4 14.Qf3 Ne5 15.Qf4 Bg7=) 14.Nf3 (14.Kf2 c5= (worse is 14...ef4 15.Re1 Bg7 16.Be6+=)) 14...ef4 (14...Nb6 15.Bd3 Na4 16.Nf6 Qf6 17.Be5=) 15.0-0 (15.Bd3 Nd6 16.0-0=) 15...Ne5?? (better is 15...Ne3 16.de3 Qe4=) 16.Nf6!+/– Qf6 17.Be5 Qc6? (17...Qb6 18.Rf2 Ng7 19.Qh4+–) 18.Bb3 (18.Bh8 Qc4 19.Qh7 Ne7+–) 18...Ne3?? (18...Ng3 19.Qc8! Rc8 20.hg3 Bc5 21.bc5 Rf8+–) 19.Qh4+– Nf1 (19...Be7 20.Qf4 Nf1 21.Bh8 (21.Rf1?! Rf8 22.Qh6 Be6+=) 21...Nh2 22.Nd4+–) 20.Bh8 Qb5 (20...Nd2 21.Nd2 Bf5 22.Re1 Kd7 23.Qh7 Kc8+–) 21.Qh7 Bd7 (21...Qd7 22.Qg6 Kd8+–) 22.Qf7 Kd8 23.Bf6 Kc8 24.Qf8 Be8 25.Bf7 (25.Nd4 Qd7 26.Be6 Kb8 27.Bd7 b6 28.Bc6 Ka7 29.Nb5 ab5 30.a4 Rc8 31.ab5 Kb8 32.Ra8) 25...b6 26.Be8 (26.Be8 Kb7 27.Rf1 Re8 28.Qf7+–) 1–0. Trkn – Jeff Greder, itsyourturn.com, 2001.

4.e4 Ne7 5.Nc3 Ng6 6.Nf3 c5 7.Bc4 (7.bc5 Bc5 8.Nd5 Ne7+=) 7...cb4= 8.ab4 Bb4 9.Nd5 Bc5 (9...Ba5 10.Bb3=) 10.d4 ed4 11.Nd4 d6 (11...Nc6!?+=) 12.Qh5+/- Nc6 13.Nf5 Qc7?? (better 13...Nce5 14.Be5 de5 15.Ng7 Kd7+-) 14.Nc7+- (14.Nc7 Kd8 15.Na8+-) 1-0. PEREIRA – Gatteres, internet, 2021.

4.Nf3 d5 5.Nc3 =.

4.Nf3 d6 5.c4 Nc6 6.d3 (6.d4 e4 7.Nfd2 f5=) 6...Nge7 7.e3 Bg4 (7...d5 8.d4 e4 9.Nfd2=) 8.Be2+= Nf5 (8...d5!?+=) 9.h3 Bf3 10.Bf3 (worse is 10.gf3 g6=) 10...Nh4 11.Bd5 Qd7 12.b5 (12.Qh5 Ng6+/–) 12...ab5 13.cb5 Ne7 14.Bb7 Rb8 15.Ba6 Ng2 16.Kf1 Nh4 17.Qe2 Qf5 (17...d5 18.Ke1=) 18.Nd2 c6 19.a4 cb5 (19...d5 20.Ke1=) 20.Bb5+/– (worse is 20.ab5 d5=) 20...Kd8 21.Bc3 Nc8 (better is 21...Neg6!?+/–) 22.Ba5 Ke7 23.Rc1 g6?? (23...Kf7 24.Rc7 Be7 25.Bc4 Kg6+–) 24.Rc7 (24.Rc7 Ke6 25.Bd7 Kf7 26.Bf5 Ne7 27.Be4+–) 1–0. kostovist – chsen, internet, 2006.

5.c4 d6 6.Nc3 Be6 7.Nf3 Nge7 8.d4 d5 (8...ed4 9.ed4 Bg4 10.Be2+/–) 9.cd5 Nd5 10.de5 Ne5 11.Ne5 fe5 12.Qh5 Bf7 13.Qe5 Ne7 14.Rd1 Qc8 15.Be2 c6?? (15...Rg8 16.Bf3 Bb3 17.Rc1+–) 16.0-0 (better is 16.Ne4 Qe6 17.Nd6 Qd6 18.Rd6+–) 16...Qe6 17.Qe6 Be6 18.Ne4 Ng6 19.Bh5 (19.Nc5 Bc8+–) 19...Bc4 (19...a5 20.ba5 Ra5 21.Bg6 hg6 22.Nd6 Ke7 23.e4+– (23.Nb7?! Rb5=)) 20.Rfe1 Bd5 21.Bg6 hg6 22.Nc3 Bc4 23.Ne4 Rd8?? (23...Bd5 24.Nc5 a5+–) 24.Rd8+– Kd8 25.Rd1 Kc7 26.Be5 Kb6 (26...Kc8 27.f4+–) 27.Bd4 (better is 27.Rd7!? c5 28.bc5 Bc5 29.Nc5 Kc5 30.Rg7 Rg8 31.Rb7 Rd8 32.Bd4 Kd5+–) 27...Kc7 28.Nc5 Bd6 29.h3 Bc5 30.Bc5 Rd8? (30...b6 31.Bd6 Kc8 32.e4+–) 31.Rd8 (better is 31.Bb6! Kb6 32.Rd8+–) 31...Kd8 32.Bf8 Kc7 33.Bg7 Kb6 34.Bd4 Kb5 35.f4 Ka4 36.Bb2 Kb3 37.Bd4 Ka3 (37...Ka4!?=) 38.Bc5+= Kb3 39.g4 Kc3 (39...Bd3 40.h4+=) 40.h4 Kd3 41.h5 gh5 42.gh5 Ke4 43.Kg2 Bf7 44.h6 Bg6 45.Kg3 Kf5 46.Kh4 Kf6 47.Kg4 Bf5 (47...Be4!? 48.Bd4 Kg6 49.h7 Kh7 50.f5+–) 48.Kf3 Kg6 49.Bf8 Kf7 50.Bg7 Kg6 (50...Bh7+–) 51.e4 Be6 (51...Bc8+–) 52.f5 Bf5 53.ef5 Kh7 54.f6 (better is 54.Kg4 Kg8+–) 54...Kg8 (54...Kg6+–) 55.Ke4 Kf7 56.Kd4 (56.h7 Ke6 57.h8Q Kd7 58.f7 Kc7 59.Qh2 Kb6 60.f8Q Kb5 61.Qc5 Ka4 62.Qa2) 56...b6 57.Ke5 Kg8 58.Kd6 (58.Ke6 c5 59.f7 Kh7 60.f8N Kg8 61.Kf6 cb4 62.h7) 58...a5 59.Kc6 ab4+– 60.Kb6 b3 61.f7 Kf7 62.Kb5 Kg8?? 63.Kb4 Kh7 64.Kb3 Kg8 65.Kc4 Kh7 66.Kd5 Kg8 67.Ke6 Kh7 68.Kf7 ½–½. Fournier,Frederic – GMDionis, Active, 2008.

5.Bc4 d5 6.Be2 Be6 7.Nf3 Qd7 (7...Bd6=) 8.c4 (8.d4 Bd6=) 8...0-0-0 (8...dc4 9.Qc2–/+) 9.0-0 (9.b5!? Nb8 10.cd5 Bd5 11.Nc3=) 9...dc4+= 10.Nc3 (10.Qc2 b5+=) 10...Nh6 (10...g5 11.b5 ab5 12.Nb5–/+) 11.Qc2 (better is 11.Qa4+=) 11...Qd2?? (better is 11...g5–/+) 12.Nd2+– Bf5 13.e4 (13.Nde4 b5+–) 13...Be6 (13...Nd4 14.Qc1 (14.ef5?! Nc2 15.Rad1 b5+/–) 14...Be6 15.Rd1+–) 14.Bc4 Nd4 (14...Bc4 15.Nc4 b5 16.Ne3+–) 15.Be6 Kb8 16.Qa4 Ne6 17.Rfd1 Nf4 (17...c6 18.Rac1+–) 18.Nf3 Bd6 19.Qc2 (19.b5 ab5 20.Qb5 Rhe8+–) 19...Nf7 (19...Rd7 20.b5 ab5 21.Nb5+–) 20.Rac1 Ng5 (20...c6 21.Ne2+–) 21.Ng5 fg5 22.Nd5 (better is 22.b5 g4+–) 22...Rd7 (22...Ne6 23.Qc4 c6 24.Ne3+–) 23.Nf4 gf4 24.Be5! Rc8 (24...Be5 25.Rd5 Double attack (25.Rd7 Pinning; 25.Rd7 Deflection; 25.Rd5 Decoy)) 25.Bd6 Ka7 26.f3 (better is 26.Bc5 Kb8 27.Rd7 f3+–) 26...c6 27.Bc5 1–0. wlittle (2100) – baj (1735), net–chess.com, 2005.

5.d3 d6 6.g3 Be6 7.Bg2 Nge7 8.Nd2 Qd7 9.Ne2 0-0-0 10.c4 Na7 11.Rc1 Nec6 12.0-0 d5 13.d4 e4 14.cd5+/– Bd5 15.Be4 Qh3?? 16.Bd5 Rd5 17.Nf4 Qf5 18.Nd5 Qd5 19.Qf3 Qd7 20.Rfd1 Kb8 21.Ne4 Be7 22.Nc5 Qe8 23.Qg4 h5 24.Qg7 Rg8 25.Qh6 Nd8 26.Qf4 Bd6 27.Qf3 Nac6 28.e4 Nf7 29.e5 fe5 30.de5 Nfe5 31.Be5 Be5 32.Re1 Rf8 33.Qd5 Bd6 1–0. exp2005 – januszka57, internet, 2011.

5.d4 ed4 6.ed4 d5 7.Nf3 Bg4 8.Be2 Bd6 9.0-0 Nge7 10.h3 Bf3 11.Bf3 0-0 12.Nd2 Ng6? (12...Qd7 13.Re1=) 13.c4 (better 13.Bd5!? Kh8 14.Bc6 bc6 15.Nc4+-) 13...dc4 14.Nc4 Re8 15.Qb3 Kh8 16.Rae1 Qd7 17.b5 ab5 18.Qb5 Rab8 (18...Nh4 19.Bg4 f5 20.Bh5+/-) 19.a4 (19.Na5 Re1 20.Re1 Qc8 21.Nc6 bc6 22.Qc6 Nf4+/-) 19...Qf7 (19...Red8 20.Bg4 Qf7 21.Be6+=) 20.Nd6 cd6 21.Re8 Qe8 22.Bc6?? (better 22.Rb1+/-) 22...bc6-+ (worse 22...Qc6 23.Rc1 Qb5 24.ab5+=) 23.Qc4 Rb2 24.Qc3 Ra2 (24...Re2 25.Rc1 c5 26.dc5 dc5 27.Qa5-+) 25.a5 (25.Re1 Qa8 26.Qc4 Rb2-+ (26...Ra4?? 27.Qa4 Qc8 28.Qa6+-)) 25...Qa8 (25...Nf4!? 26.Re1 Re2 27.Rb1-+) 26.Ra1 Ra1 27.Qa1 Nf4 28.a6 Qa7 (28...c5 29.Qf1 Ne6 30.Qe2 Nd4 31.Qe7-+) 29.Qa3 (29.Kh2 h6 30.Qa4 Qa8-+) 29...h6 (better 29...Ne2!? 30.Kh2 h6 31.Qa5-+) 30.Qe3 Ng6 31.Qe8 Kh7 32.Qc6 Qd4 33.Qb7 Ne5?? (better 33...Nf4 34.Qb1 Kg8 35.Qa2 Qd5 36.Qd5 Nd5-+) 34.a7+- Qa1 35.Kh2 Nf3 (35...Qa4 36.a8Q Qf4 37.g3 Qf2 38.Qg2 Qf5+-) 36.gf3 Qe5 37.Kh1 Qe1 (37...Qh5 38.a8Q Qh3 39.Kg1+-) 38.Kg2 Qe5 39.a8Q (better 39.Qe4 f5 40.Qe5 de5+-) 39...Qg5 40.Kf1 Qc1 41.Ke2 Qc2 42.Ke3 Qc3 43.Ke4 Qc4 (43...f5 44.Kd5 Qe5 45.Kc6+-) 44.Kf5 Qc2 (44...Qc3 45.Qd5 g6 46.Ke6 h5 47.f4 Kg7 48.Qdb7 Qc7 49.Qc7 Kh6 50.Qf8) 45.Ke6 Qc4 46.Kd7 (46.Qd5 Qd4 47.Qf5 g6 48.Qb7 Kh8 49.Qf6 Qf6 50.Kf6 g5 51.Qg7) 46...Qf7 47.Kc8 (47.Kd6 Qb7 48.Qb7 Kg6 49.Ke6 h5 50.Qe4 Kh6 51.Kf7 f5 52.Qf5 g5 53.Qg6) 47...Qe8 48.Kc7 Qe7 49.Kb8 (49.Kb8 Qd8 50.Qc8 Qc8 51.Kc8+-) 1-0. muhammadaudii (2125) - kamalrdwaan (2010), lichess.org, 2020.

5.d4 ed4 6.ed4 Qe7 7.Be2 a5 +=.

5.Nf3 b5 6.c4 Bb7 (better is 6...bc4!? 7.Bc4 d5=) 7.cb5+/– ab5 8.Bb5 Nb4? (better is 8...e4!? 9.Bc6 Bc6+/–) 9.ab4+– Ra1 10.Ba1 c6 11.Be2 Be7 (11...Bb4 12.0-0+–) 12.b5 Qa8 13.Nc3 c5 14.0-0 d6 15.d4 Nh6 16.de5 fe5 17.Bc4 Bf6 (17...Bf3 18.gf3 Nf7+–) 18.Qd6 Bf3 19.gf3 Qf3 20.Qe6 Be7 21.Bd5 (better is 21.Qc8 Bd8 22.Be6+– (22.Qc5?! Qg4 23.Kh1 Qf3 24.Kg1 Qg4 25.Kh1 Qf3 26.Kg1=)) 21...Qh5 (21...Qg4 22.Qg4 Ng4 23.Ne4+–) 22.Ne4 (better is 22.Bc6 Kf8 23.Qc8 Kf7 24.Qh8 Qg6 25.Kh1+–) 22...Ng4 (22...Qg4 23.Qg4 Ng4+–) 23.Qf7 (23.Nd6 Kf8 24.Qc8 Bd8 25.Qd8 Qe8 26.Qe8) 23...Qf7= 24.Bf7 Kf7 25.b6 Rb8 26.Rb1 c4? (better is 26...Ke6=) 27.Nd2 c3 28.Bc3 e4? (better is 28...Ke6+–) 29.Ne4 h5 (29...Rb7 30.Kg2+–) 30.Bd4 (better is 30.b7!? Nf6 31.Be5 Rg8 32.Ng5 Kg6+–) 30...Nf6 31.Nf6 Bf6 32.Bf6 gf6 (32...Kf6 33.b7+–) 33.Kg2 Kg6 34.Kf3 f5 (34...Kf5 35.b7+–) 35.h4 Rb7 36.Kf4 Kf6 37.f3 Rb8 (37...Kg6 38.Rb5+–) 38.b7 Ke7 (38...Ke6 39.Rb6 Kd7 40.Kf5+–) 39.Kf5 Kd7 40.Kg5 Ke6 41.Kh5 Ke5 42.Kg4 Kf6 43.h5 Kg7 44.f4 Kh6 45.f5 (45.Rb6 Kg7+–) 45...Kg7 (45...Rb7 46.Rh1 Rb4 47.Kf3 Rb2+–) 46.e4 Kf6 47.Kf4 Kf7 48.e5 Re8 49.b8Q Rb8 50.Rb8 Kg7 51.Rb7 Kh8 52.Kg5 Kg8 53.Kf6 Kh8 54.Kg6 Kg8 55.Rb8 1–0. Fournier,Frederic – Daropa, Active, 2008.

5.Nf3 Bd6 6.c4 e4 7.Nd4 Nd4 8.Bd4 Ne7 (8...Qe7 9.d3+/–) 9.d3 0-0 10.c5 Be5 11.de4 Bd4 12.ed4 Ng6 (12...d5 13.cd6! Qd6 14.Bc4 Kh8 15.Nc3+/–) 13.Bc4+– Kh8 14.0-0 d6 15.Nc3 f5 16.f3 Qg5 17.ef5 (17.Nd5!? Nf4 18.Nf4 Qf4 19.Qd3+–) 17...Bf5 18.Qc1 Nf4 19.g3 Bh3 20.Rf2 b5 (20...dc5 21.Nd5! Ne6 22.Qg5 Ng5 23.f4+/– (worse is 23.Nc7 Rac8 24.f4 Ne4+=)) 21.Bf1 (21.cb6 cb6 22.Nd5 Be6 23.Nf4 Bc4 24.Qc4 Rf4+–) 21...Rae8? (better is 21...dc5 22.dc5 Qg6+=) 22.Bh3?? (better is 22.Kh1 Bf1 23.gf4 (worse is 23.Rf1 Nh3+/–; 23.Qf1?! Nd5 24.Qc1 Ne3+=) 23...Qf4 24.Qf4 (24.Qf1?! Qd4 25.Ne2 Qe3+/–; 24.Rf1?! Qd4 25.cd6 cd6+/–) 24...Rf4 25.Rff1 Rd4 26.cd6 Rd6 27.Ne4+–) 22...Nh3+= 23.Kg2 Nf4?? (better is 23...Qc1 24.Rc1 Nf2 25.Kf2 dc5 26.dc5 Kg8+=) 24.Kf1+/– Ne6 25.Qg5 Ng5 26.Re1 (better is 26.Kg2!?+/–) 26...Re1+= 27.Ke1 Rf3 28.cd6 cd6 29.Ke2 Rf2 30.Kf2 d5? (better is 30...Kg8+=) 31.Nd5+– Ne6 32.Ke3 g5 33.Nc7?? (better is 33.Nc3+–) 33...Nc7–/+ 34.Ke4 h6 35.Ke5 Kg7 36.Kd6 Ne8 37.Kc6 (37.Ke6 Kf8–/+) 37...Nf6 (better is 37...Kf6!?–+) 38.Kb6–/+ h5 (better is 38...Ne4!?–/+) 39.Ka6+= h4 40.gh4 gh4 41.Kb5 Nd5? (41...h3 42.d5 Nd5+/–) 42.Kc5 Ne3?? (42...Nf6+–) 43.b5 Ng4 44.h3 1–0. Fournier,Frederic – killburn, Active, 2007.

5.Nf3 Nge7 6.c4 b5? (better is 6...d5!?=) 7.cb5+/– ab5 8.Bb5 Bb7 9.0-0 Ba6 10.Ba6 Ra6 11.b5 Ra5? (better is 11...Rb6 12.Nc3 d5+–) 12.bc6 dc6 (12...Nc6 13.Qc2+–) 13.d4 Rd5 14.Qa4 Qd6 (14...e4 15.Nfd2 Rb5 16.Qc2+–) 15.Nc3 1–0. Fournier,Frederic (2215) – Lafaix,Pierre, Grand Prix Oise, 2002.

5.c4 Nc6 6.cb5+/– ab5 7.Bb5 Na7 8.Bc4 Ne7 9.Nf3 d6 (9...c6 10.0-0+/–) 10.Nh4 (better is 10.d4 ed4 11.Nd4+–) 10...Ng6?? (better is 10...c5+/–) 11.Qh5+– Kd7 (11...Bg4 12.Qg4 Nh4 13.Qh4+–) 12.Ng6 Be7 13.Ne7 (better is 13.Nh8 Qh8 14.d4 g6+–) 13...Qe7 14.Nc3 Nc6 (14...c6 15.0-0+–) 15.Bd5 Nd4 (15...Bb7 16.b5 Na5 17.0-0+–) 16.Rc1 (better is 16.Ba8 Nc2 17.Kd1 Na1 18.Ba1 Kd8+–) 16...Ra7 17.Qf7 (17.Ne2!? Ne2 18.Qe2 Kd8+–) 17...c6 18.Qe7 Ke7 19.Ba2 Ba6 20.f3 h6 21.Kf2 g5 22.g4 c5 (22...Ne6 23.Be6 Ke6 24.d4 ed4 25.Nb1+–) 23.Rhe1 (better is 23.Nd5!? Kd7+–) 23...cb4 24.ab4 Ne6 (24...Bb7 25.Nd5 Bd5 26.Bd5+– (26.ed5?! Ra2 27.Rc7 Kd8+/–)) 25.Be6 (25.Nd5 Kf7+–) 25...Ke6 26.Nd5 Bd3 (26...Rhh7 27.d4+–) 27.Rc3 Bb5 28.Rec1 (28.Nc7!? Rc7 29.Rc7 h5 30.gh5 Rh5+–) 28...Ra2 29.Rc7 Re8 (29...Bd7 30.Bc3+–) 30.Bc3 (better is 30.Rg7 Ra7 31.Ra7+–) 30...Bc4 (30...Bd7+–) 31.Rc4 (31.Rc4 Rf8 32.b5+–) 1–0. slavisa11 – painter1, Live Game Caissa's Web, 2004.

5.d4 Bb7 6.de5 Be4 7.ef6 (better is 7.c4+=) 7...Qf6?? (better is 7...Nf6 8.Nd2 Bd5=) 8.Bf6+– gf6 (8...Nf6 9.Nf3+–) 9.Nc3 (better is 9.Qe2 f5 10.f3 Bg7+–) 9...Bc6 10.Nf3 Bg7 11.Bd3 (11.Nd4 Ne7+–) 11...Ne7 12.0-0 (better is 12.a4!? f5 13.Ra3 0-0+–) 12...f5 13.Qd2 d5 (13...Bf3 14.gf3 Nbc6+–) 14.Rae1 h5 (14...Rf8 15.Ng5 Bh6 16.Qe3+–) 15.Bf5 (better is 15.Qg5 Bf8 16.Qg6 Kd8+–) 15...Bd7 (15...0-0 16.Be6 Kh8+–) 16.Bd7 Nd7 17.Nd5 Bf6 18.Nc7 Kd8 19.Na8 Rg8 20.Nb6 Rg6 21.Qd7 1–0. andre2004 – toon magpie, ChessWorld.net, 2005.

5.Nc3 d6 6.Nd5 (6.Bc4 f5+=) 6...Be6 (6...Nce7 7.Ne7 Ne7 8.Bc4=) 7.Ne3 (7.Bc4!? Bf7 8.Nh3+/–) 7...d5 (7...Nge7 8.c4=) 8.ed5 Bd5 9.Nd5 (9.Bd3 Nge7=) 9...Qd5 10.c4 (10.Qf3 e4 11.Qe3 0-0-0=) 10...Qd7 (10...Qe4 11.Ne2+=) 11.c5 (11.Ne2 Nh6+=) 11...Nh6 (11...0-0-0 12.Bc4 Nge7 13.d3+=) 12.Nf3 (12.Bc4=) 12...Ng4?? (better is 12...e4 13.Nh4 0-0-0–/+) 13.h3+= Nh6 14.Be2 (14.d4 e4 15.Nd2 Nd4 16.Ne4 0-0-0 17.Qd4 Qd4 18.Bd4 Rd4+=) 14...Qd5 (14...e4 15.Nh2 0-0-0 16.Rb1+=) 15.Qc1 (15.Qc2 0-0-0 16.0-0-0 Qd7+–) 15...Nf5 (15...e4 16.Bc4 Qd7=) 16.g4?? (better is 16.Qc2 g6 17.Bc4+=) 16...Nfd4 (better is 16...Ncd4 17.Bd4 Nd4–+) 17.Nd4?? (better is 17.Qd1 0-0-0 18.Bd4 Nd4 19.0-0–+) 17...Qh1 (17...ed4?! 18.0-0 d3 19.Bd1–/+) 18.Bf1 ed4 19.d3 (19.Qc2 Qf3 20.Qd3 Qd3 21.Bd3 g6–+) 19...0-0-0 20.Qf4 Re8 (20...Qd5 21.Qf5 Qf5 22.gf5–+) 21.Kd2 Qd5 22.Be2 (22.Qf5 Qf5 23.gf5 Re5–+) 22...Qe5 (22...Qb3!? 23.Bd4 Nd4 24.Qd4 Re2 25.Ke2 Bc5 26.Qc5 Qb2 27.Kf3 Qa1 28.b5 Qd1 29.Kg2 Qd3 30.ba6 ba6 31.Qc6–+) 23.Qf5 Kb8 (23...Kd8 24.Bf3 g6 25.Qe5 fe5 26.Ke2–+) 24.Qe5 (24.Bf3 g6 25.Qe5 fe5–+) 24...fe5 25.g5 (25.Bf3 Be7–+) 25...Be7 26.h4 (26.Rg1 Ref8 27.Ke1 a5–+) 26...Rhf8 (better is 26...Ref8 27.Ke1–+) 27.Bh5 (27.Rf1 Rf4 28.Ke1 Rh4–+) 27...Rf2 28.Be2 Ref8 29.Rg1 (29.Rh1 Rg2–+) 29...Rh2 30.Ke1 Rff2 31.g6 Re2 32.Kd1 Rb2 33.Kc1 h6 34.h5 Bg5 35.Rg5 hg5 36.a4 Rbg2 37.b5 Rg1 0–1. jordan2delta – Abuloai, internet, 2006.

5.Nc3 Be7 6.Bc4 Bd6? (6...d6 7.Nge2+=) 7.Nge2 (7.Bg8!? Rg8 8.Qh5 Ke7 9.Nd5 Ke6 10.Qh7+–) 7...b5+= 8.Bb3 Nge7 9.0-0 Bb7 10.d3 Nd4 (10...Ra7!?+/–) 11.Nd4+– ed4 12.Ne2 c5 13.bc5 Bc5 14.Nd4 d5? (better is 14...Qb6!? 15.c3 d5+–) 15.Ne6 Qd7 (15...Qd6 16.Ng7 Kd8+–) 16.Nc5 Qc6 17.Nb7 Qb7 18.Qh5 g6 (18...Kf8 19.ed5 Qd7 20.Qf3+–) 19.Qh4 0-0-0 (19...Rf8 20.ed5 Ng8 21.Rfe1 Kd8 22.Re6+–) 20.Bf6 Rhe8 21.ed5 Rd5 (21...Nf5 22.Qb4 Rd6 23.Rae1+–) 22.Be7 Rh5 (22...Re5 23.Bd6 Re2 24.Qg4 Qd7 25.Qd4+–) 23.Qg4 Kb8 24.Bd6 (24.Bd6 Ka8 25.Rae1+–) 1–0. Fritz 10 – NN, 2007.

5.Nc3 f5 6.ef5 Nf6 7.g4 +=.

5.Bc4 b5 6.Ba2 a5 +=.

4.e3 Bb7 A) 5.Bb5?? Bg2 6.Be5 Bh1–+ (6...fe5?! 7.Qh5 g6 8.Qe5 Qe7 9.Qh8–/+); B) 5.d4=.

4.e3 c6 5.c4 c5 6.bc5 Bc5 7.d4+– Qa5? 8.Bc3 Qc7 9.dc5 Qc5 10.cb5 a5 11.a4 d6 12.Nf3 Bg4 13.Be2 Nh6 14.0-0 0-0 15.Qb3 Kh8 16.Nbd2 Rc8 17.Rac1 e4 18.Ne4 Qh5 19.Nd6 Rc5 20.h3 Bh3 21.Ne5 fe5 22.Bh5 1–0. Bazza3 – IrishBouncer, ChessWorld.net, 2005.

4.e3 d6 5.Bb5+/– Nd7 6.Nf3 Rb8 7.Nc3 Ne7 8.d4 Nf5 9.0-0 Be7 10.Qd3 0-0?? (better is 10...Nh6+–) 11.Qf5 Nc5 12.Qh5 f5 (12...Ba6 13.Ba6 Na6+–) 13.dc5 1–0. Fournier,Frederic (2100) – DrPepper836, chessworld.net, 2008.

4.e3 Bd6 5.c4 (5.Bb5!? Bb7 6.Nf3+/–) 5...bc4+= 6.Bc4 Ne7 7.Nf3 Ba6 8.Ba6 Na6 9.0-0 c6 10.d4 e4 11.Nfd2 Nf5? (better is 11...f5!?+=) 12.Ne4 Be7 13.Nbd2 0-0 14.Nf3 Nd6 15.Qe2 Ne4 16.Rac1?? (better is 16.Qa6 Qb6 17.Qb6 ab6 18.Rac1+/–) 16...Nc7–+ 17.Rfd1 Nd5 18.Qd3 Ng5 19.Ng5 fg5 20.f3 (20.Qc4 Rf7–+) 20...Bd6 (20...a5 21.ba5 g4 22.Rf1–+) 21.e4 Nf6?? (better is 21...Nf4 22.Qc4 Kh8–+) 22.e5= Nh5 (better is 22...Bc7!? 23.ef6 Qf6 24.Qb3 d5=) 23.ed6+/– Qf6? (23...Nf4!? 24.Qc4 Kh8+/–) 24.Qd2 Nf4 25.d5 cd5?? (better is 25...Qd6 26.dc6 Qd2 27.Rd2 dc6 28.Rc6 Rad8+–) 26.Bf6 Rf6 27.g3 Nh3 (27...Ne6 28.Qd5 Rd8 29.Qb7+–) 28.Kg2 g4 29.Qd5 Kh8 30.fg4 (30.Qa8 Rf8 31.Qf8) 30...Raf8 31.Kh3 Rf2 32.Rd2 R2f7 33.Rc7 (33.Qf7 h5 34.Qf8 Kh7 35.Qf5 g6 36.Qf7 Kh6 37.g5 Kg5 38.Qf4) 33...Kg8 34.Rd7 (34.Rf2 g6 35.Rf7 Rf7 36.Rd7 Kg7 37.Rf7 Kg8 38.Ra7 Kf8 39.Qf7) 34...h6 (34...Re8 35.Qf7 Kh8 36.Qe8) 35.Rf7 Rf7 (35...a5 36.Rf8 Kf8 37.Rf2 Ke8 38.Qe6 Kd8 39.Rf8) 36.d7 Kh7 37.Qf7 1–0. Fournier,Frederic – Aticus, KasparovChess.com rated blitz game, 2002.

4.e4 Bb7 5.d3 d5 6.Nd2 d4= 7.Ngf3 Qd7 8.Rc1 (8.c4 dc3 9.Bc3 c5=) 8...a5=+ 9.c3 ab4 (9...dc3 10.Bc3 ab4 11.Bb4 Bb4 12.ab4=+) 10.cb4 Nc6 (10...Bd6 11.Be2=+) 11.Be2= f5 (11...Bd6 12.0-0=) 12.0-0 g6 13.Qc2 (13.Nb3=) 13...Bh6 (13...Bd6 14.Nb3 Qe7 15.Rfe1+=) 14.Rcd1 (14.Qc5!? Bd2 15.Nd2+-) 14...Nf6 (14...Qd6 15.Nb3=) 15.Qc5+= Bd2 (15...Bf4 16.ef5 gf5 17.Qb5+=) 16.Rd2 fe4? (better 16...Qd6 17.Qb5 Ba6+-) 17.Ne5+- Qd6 18.Nc6 (better 18.Qb5!? 0-0 19.Qc4 Qd5 20.Nc6 Qc4 21.dc4 Bc6 22.Rd4 Kf7+-) 18...Qc5+- 19.bc5 Bc6 20.Bd4 Rf8 (20...Kf7 21.de4 Ne4 22.Rd3+- (worse 22.Bh8 Nd2 23.Rd1 Nb3+=)) 21.Bf6 (21.de4 Ne4 22.Rd3 0-0-0+-) 21...ed3 (21...Rf6 22.de4 Ra3 23.Rb2+-) 22.Bb2 (22.Bh4!? Ra4+-) 22...de2+- 23.Re2 Kd8 (23...Kf7 24.Re3+-) 24.Rfe1 (24.Rd1 Kc8+-) 24...Re8? (better 24...Rf5!? 25.Rc2 Kd7+-) 25.Bf6+- Kd7 26.Re7 Re7 27.Re7 (27.Be7? Re8-+ (27...Ra3?! 28.Bf6=+)) 27...Kc8 28.Rh7 (28.Be5!? Kd8 29.Rc7+-) 28...Ra3+- 29.h4 (29.Be5 Ra7+-) 29...b4 (29...Ra6 30.Be5 Bd7 31.f4+-) 30.Be5 (30.Be5 Ra7 31.Rg7+-) 1-0. Portilla Chavez,Luis Fernando (1605) - Camarena Meza,JE (1655), XLVII Aniversario I. E. Parroquial Padr, 2012.

4.e4 c6 5.Nf3 Ne7 (5...a5!?=) 6.d4+= Ng6 (6...ed4 7.Qd4 a5 8.e5+=) 7.de5+/– Be7 (7...fe5!? 8.Ne5 Ne5 9.Be5 Qe7+/–) 8.c4 a6 9.ef6 gf6 10.Nbd2 d6 11.Bd4 (11.Nd4 0-0+–) 11...Nd7 12.Rc1 Rf8 (12...Nde5 13.Qc2+–) 13.cb5 ab5 (13...cb5 14.Qb3 Nde5+–) 14.Rc6 Ra3 (14...Bb7 15.Bb5 Bc6 16.Bc6+–) 15.Bb5 Kf7 (15...Bb7 16.Bb6 Bc6 17.Bd8 Bb5 18.Nd4 Kd8 19.Nb5+–) 16.Nc4 Ra7 (16...Ra8 17.Nd6 Bd6 18.Rd6 Qc7+–) 17.Ba7 Nf4 (17...Nde5 18.Bb6 Nf3 19.Qf3+–) 18.Nd6 Kg8 19.Rc8 Ng2 20.Kf1 Qc8 21.Nc8 Ne5 22.Ne7 Kg7 23.Nf5 Kg6 24.Ne5 fe5 25.Qg4 Kf6 26.Qg7 Ke6 27.Bc4 1–0. b4_player (2015) – Dutchie909 (1795), GameColony.com, 2002.

4.Nf3 Bb7 5.e3 a6 6.Be2 c5 7.c3 (better 7.bc5!? Bc5 8.a4+-) 7...e4= 8.Ng1 (8.Nh4 Nh6 9.g3 Nc6=) 8...c4 (8...Nc6!?=+) 9.f3 d5 (better 9...Bd6 10.a4 Nh6=) 10.d4?? (better 10.Nh3+=) 10...ed3-+ 11.Bd3 cd3 12.Qd3 Nd7 13.Ne2 Ne5 14.Qc2 Nc4 15.Bc1 (15.Kf2 Qe7 16.Bc1 g6-+) 15...g6 (15...Bd6!? 16.a4-+) 16.0-0 Bg7 (16...Bd6 17.a4-+) 17.Rd1 (17.Nd4 Ne7-+) 17...Qb6 18.Nd4 Ne7 19.Re1 0-0 20.Nd2 Rfe8 21.Nc4 dc4 22.e4 Nc6 (22...Nf5! 23.Bb2 Nd4 24.cd4-+) 23.Be3 Qc7 24.Rad1 (24.a4 Nd4 25.Bd4 Bc6-+) 24...Rad8 25.Qf2 (25.a4 Qe5-+) 25...Ne5 26.Re2 Nd3 27.Qg3 (27.Qh4 Qd7-+) 27...Qg3 28.hg3 Re7 (28...f5!? 29.Ra1-+) 29.Red2 Rde8 30.g4 Rc8 (30...Rd7 31.Rc2-+) 31.Re2 Bc6 32.Kf1 Bd7 33.Kg1 (33.g3 Rce8-+) 33...Rce8 34.Bf2 Nf2 35.Kf2 (35.Rf2 f5! 36.gf5 gf5 37.ef5 Re1 38.Rf1 R1e3-+) 35...f5! 36.Rde1 (36.ef5 Bd4 Double attack (36...Bd4 Decoy); 36.gf5 Bd4 Double attack) 36...Kf7 (36...fe4 37.g5-+) 37.ef5 (37.Rh1 fe4 38.Rh7 e3 39.Kf1 Kg8-+) 37...Bd4 38.cd4 Re2 39.Re2 Re2 40.Ke2 gf5 41.g5 (41.gf5 Bf5 42.Kd2-+) 41...f4 42.d5 Kg6 43.Kd2 Kg5 44.Kc3 Kf5 45.Kd4 h5 46.Kc3 (46.a4 ba4 47.Kc4 Ke5-+) 46...Ke5 47.Kc2 (47.d6 Kd6 48.Kd2 Bc6-+) 47...Kd5 48.Kc3 h4 49.g4 hg3 (49...hg3 50.Kd2 g2 51.a4 g1Q 52.Kc2 Qg2 53.Kc1 c3 54.ab5 ab5 55.Kd1 Qd2) 0-1. Kramar,Matus - Zetocha,Adrian (1645), MSR Mladeze - CH12, 2015.

4.Nf3 e4 5.Nd4+= a6 6.e3+/– c5 7.Nf5?? cb4 8.ab4 g6 9.Nd4 Bb4 10.Nc3 Bc3 11.Bc3 Bb7 12.f3 ef3 13.gf3 h5 14.Nb5?? ab5–/+ 15.Bb5 Ra1 16.Qa1 Bf3 17.Bf6? Nf6 18.Rf1 Rf8 19.Rf3 Ng4 20.Rf4? Qh4 21.Kf1 Rf4 22.Ke2 Qh2 23.Kd3 Nf2 24.Kc3 Ne4 (24...Ne4 25.Kb2 Rf2–+; 24...Rf5 25.Kb4–+) 0–1. Cruncher87@ – Bernd, mySchach.de, 2005.

5.c4 bc4 6.Bc4 Bb7 7.Nf3 Ne7 8.0-0+= Bd5? 9.Qb3 Bc4+= 10.Qc4 Nbc6 11.Nc3 h5 12.d4+/– d5 13.Qc5 g5 14.Ne2 Qd7 15.de5+/– Nf5? 16.Qc2+– fe5 17.Be5 Ne5 18.Ne5 Qe6 19.Rfd1 Qe5? 20.Qc6 Kf7 21.Qa8 Bg7 22.Qa6 Ne3 23.fe3 Qe3 24.Kh1 Ba1 25.Ra1 Qf2 26.Ng3 Re8 27.Rf1 Re1 28.Qd3 Rf1 29.Qf1 Qf1 30.Nf1 d4 31.Nd2 Ke6 32.Kg1 Kd5 33.Kf2 c5 34.bc5 Kc5 35.Ke2 h4 36.Ne4 Kc4 37.Ng5 Kc3 38.Kd1 d3 39.a4 Kb4 40.Kd2 Ka4 41.Kd3 Kb5 42.Ke4 Kc5 43.g3 hg3 44.hg3 Kd6 45.Kf5 Ke7 46.Kg6 Kf8 47.Kh7 Ke7 48.g4 Kf6 49.Kh6 Ke5 50.Nh7 Kf4 51.g5 Kf5 52.g6 1–0. kiloracer (1635) – apmc (1715), net–chess.com, 2005.

5.Be5 g6 6.Bg3 d6 7.Nf3 Bb7 8.Nc3 Nc6 9.d4 d5 10.Bd3 Nge7 11.0-0 Nf5 12.e4 Ng3 white timed out 0–1. sbeaulieu (2550) – sbderkach (1915), net–chess.com, 2014.

5.Nf3 Bb7 6.c4 bc4 7.Bc4 Ne7 8.0-0 e4 9.Nd4 d5 10.Be2 g6 (10...a5!?+=) 11.Ne6+/– Qd6 12.Nf8 Kf8 13.d3 f5?? (better is 13...Kg7!?+/–) 14.de4 (14.Bh8 Kg8 15.Bb2 Nbc6+–) 14...fe4?? (14...Rg8+–) 15.Qd4 (better is 15.Bh8 Nd7 16.Bb2+–) 15...Rg8+/– 16.f4 Nf5 17.Qd2 Nd7 18.Nc3 d4 19.ed4 Qd4 (19...e3!? 20.Qe1 Nd4+/–) 20.Qd4+– Nd4 21.Bc4 e3? (21...Ke7 22.Rfe1 Nc2 23.Ne4 Ne1 24.Re1 (24.Bg8 Nd3 25.Nf2 Nf2 26.Re1 Ne4 27.Bh7 Nf8–/+) 24...Be4 25.Re4 Kf8 26.Bg8 Kg8 27.Re7+–) 22.Rad1 (22.Rfd1!? c5 23.Bg8 Kg8 24.bc5 Nc5 25.Rd4 Nb3+–) 22...e2 23.Ne2 (23.Rd4?! ef1R 24.Kf1 Rg7=; 23.Bg8?! ed1R 24.Rd1 Kg8 25.Rd4 Nf6+–; 23.Be2?! Ne2 24.Ne2 Nb6+–) 23...Ne2 24.Be2 Nb6 25.f5 g5 26.Bf3 (26.Bd4 Be4+–) 26...c6? (better is 26...Bf3 27.Rf3 g4+–) 27.Rfe1 g4 28.Be4 h5?! (28...Nd5 29.Kf2+–) 29.g3 (29.Rd6!? Ke7 30.Rh6 Kd8+–) 29...Re8 (29...Nd5 30.Bd4 Kf7 31.Bd5 cd5 32.Re6+–) 30.Bg2 (better is 30.Rd6!? Nd5+–) 30...Re1 31.Re1 Nc4 32.Bc1 Nd6 (32...Kf7 33.Bf1 Nb6 34.Re6+–) 33.f6 (33.Re6 Nb5 34.f6 Ba8+–) 33...Rg6 (33...Kf7 34.Bf4 Nf5+–) 34.Re6 Ne8 35.Bc6 (better is 35.Bb2 a5 36.Bd4 (36.Bc6?! Bc6 37.Rc6 ab4 38.ab4 Rg5+–) 36...ab4 37.ab4 Nf6 38.Bf6+–) 35...Bc6+/– 36.Rc6 Rf6 37.Rf6 Nf6 38.Kf2 Ke7? (better is 38...Kf7+/–) 39.Bg5+– Ke6 40.Bf6 Kf6 41.Ke3 Ke5 42.a4 Kd5 43.Kd3 (better is 43.Kf4 Kc4 44.b5 ab5 45.ab5 Kb5+–) 43...Kc6 (43...Ke5 44.b5 ab5 45.ab5 Kd5+–) 44.Kc4 Kb6 45.b5 ab5 46.ab5 Ka5 (46...Kb7 47.Kd5+–) 47.Kc5 (47.Kc5 h4 48.gh4+–) 1–0. Fournier,Frederic (1880) – lheo (1765), Active, 2005.

5.Bb5 a5 6.Bc6 dc6 7.ba5+/–.

5.Bb5 a6 6.Bc4 d5 7.Bb3 d4 (7...a5 8.b5 a4 9.Ba2+/–) 8.Nf3 (8.Qh5 g6 9.Qf3 Bb7+–) 8...a5 (8...de3!? 9.fe3 Rb8+/–) 9.b5+– e4 (9...Nce7 10.ed4 e4 11.Nh4+–) 10.Nd4 a4 (10...Nd4 11.Bd4 Bf5+–) 11.Nc6 f5 (11...Qd7 12.Bg8 Rg8+–) 12.Nd8 f4 13.Bg8 (better is 13.Bd5 Kd8 14.Ba8+–) 13...g5 14.Ne6 (14.Qh5 Kd8 15.Qg5 Ke8 16.Qh5 Kd7 17.Qd5 Ke7 18.Qf7 Kd6 19.Be5 Kc5 20.Qc7 Kb5 21.Bc4) 14...g4 15.Nf8 (15.Qg4 Rg8 16.Qg8 Ke7 17.Qf8 Ke6 18.Qe8 Kf5 19.Qf7 Kg5 20.ef4 Kh4 21.Qe7 Kh5 22.Qg5) 15...f3 16.gf3 (better is 16.Bh8 Kf8 17.Bh7 fg2+–) 16...g3 17.fg3 (better is 17.Bh8 Kf8 18.Bh7 g2+–) 17...c6 18.fe4 (18.Bh8 Kf8 19.Bh7 Ra7+–) 18...h5 19.Qf3 h4 20.Rf1 (20.Qf7 Kd8 21.Bf6) 20...h3 21.Qf7 Kd8 22.Ne6 (22.Bf6) 22...Be6 23.Qe6 Kc7 (23...Rh6 24.Qh6 Ra7 25.Qd6 Kc8 26.Rf8 Kb7 27.Qc6) 24.Rf7 Kb6 25.Qc6 Ka5 26.Bc3 1–0. Fournier,Frederic (1785) – lueser (1630), Active (5/0), 2005.

5.Bb5 Nb8 6.Nf3 (6.d4 Bb7 7.Nf3 a6+–) 6...c6 7.Bc4 (7.Be2 a5 8.b5 cb5 9.Bb5 Nc6+–) 7...Ne7 (7...d5 8.Be2+/–) 8.0-0 Bb7 (8...d5 9.Be2+/–) 9.d4 (better is 9.Bb3+–) 9...c5? (better is 9...d5 10.Bb3 e4+–) 10.de5 Bf3 (10...Ng8+–) 11.Qf3 (11.gf3?! fe5 12.Be5 Nbc6+–) 11...d5 12.ed6 (12.ed6 Nd7 13.de7 Be7 14.Qd5+–) 1–0. Wall,Bill – Bkansas, internet, 1999.

5.Bb5 g5 6.Qh5 Ke7 7.e4 Qe8 8.Qe8 Ke8 9.Bc6 dc6 10.d4 Rb8 11.de5 Bg7 12.ef6 Bf6 13.e5 Bg7 14.Nd2 Bf5 15.Ngf3 h6 16.c4 g4 17.Nh4 Ne7 18.Nf5 Nf5 19.0-0 Rd8 20.Ne4 Kf8 21.Nc5 Rd2 22.Rab1 Re2 23.Ne6 Kf7 24.Ng7 Ng7 25.Rfe1 Rc2 26.e6! Kg8 27.e7 Kf7 28.Bg7 Kg7 29.e8Q Re8 30.Re8 Rc4 31.Rc8 c5 32.Rc7 Kf8 33.Rc5 Rc5 34.bc5 (34.bc5 Ke8 35.Rd1+–) 1–0. undergearmalaysia – abandon, net–chess.com, 2002.

4.c4 Bb7 5.Nf3 d5 6.cd5 Bd5 7.d4 ed4 8.Nd4 Nc6 9.Nc6 Bc6 10.Qd8 Rd8 11.e3 Bd6 12.Bc4 Ne7 13.0-0 Bd5 14.Bb5 c6 15.Be2 0-0 16.Nc3 Bf7 17.Ne4 Bb8 18.Rfd1 Ng6 19.Rd8 Rd8 20.Rd1 Rd1 21.Bd1 Bd5 22.Nc3 Be6 23.Bf3 Bd7 24.Ne4 Ne5 25.Be2 f5 26.Ng3 g6 27.f4 Nf7 28.Nf1 Be6 29.Nd2 Bd5 30.Nc4 Nd6 31.Ne5 Ne4 32.Bc4 Be5 33.Bd5 cd5 34.Be5 Nd2 35.Kf2 Nc4 36.a4? Kf7 37.Bd4= Ke6 38.h3 Kd6 39.g4 Kc6 40.gf5 gf5 41.b5 Kd6 42.Kg3 Ke6 43.Kh4 Kf7 44.Kh5 Nd6 45.Kh6 Kg8 46.Kg5 Kf7 47.h4 Ne4 48.Kh5 Nf6?? 49.Bf6+– Kf6 50.Kh6 Kf7 51.h5 Kf6 52.Kh7 Kf7 53.h6 Kf8 54.Kg6 Kg8 55.Kf5 Kh7+– 56.Ke5 Kh6 57.Kd5 1–0. dtpwaldi (1605) – chamkator, internet, 2011.

4.c4 Be7 5.e3 c5 6.b5 d6 7.d4 Nd7 8.d5 f5 9.Nd2 Ngf6 10.Ne2 g6 11.g3 g5 12.f4 gf4 13.ef4+= e4 14.Bg2 Ng4?? 15.Bh8+– Ndf6 16.0-0 Kf7 17.Bf6 Bf6 18.Ra2 a5 19.Nc1 Bd4 20.Kh1 Nf2 21.Rf2! Bf2 22.Ne4 fe4 23.Rf2 Qf6 24.Be4 Bf5 25.Qh5 Bg6 26.Bg6 hg6 27.Qh7 Qg7 28.Qg7 Kg7 29.Re2 Rd8 30.Nd3 Kf6 31.g4 a4 32.Kg2 g5 33.f5 Kf7 34.Kf3 Rd7 35.Nf2 Re7 36.Re7 Ke7 37.Ne4 (37.Ne4 Kd8 38.Nd6+–) 1–0. phildo (1975) – afilby (1895), net–chess.com, 2004.

4.e3 a6 5.Bc4 Ne7 6.d4 ed4 7.Bd4 d6 8.f4 Bb7 9.Nf3 Bf3 10.Qf3+/– Nbc6 11.Bd5 Qd7+= 12.Bc6 Nc6 13.c4 0-0-0 14.b5+/– ab5 15.cb5 (15.cb5 Nb8 16.Nc3+/–) 1–0. malaysianisme – beammeupscotty (2115), net–chess.com, 2003.

4.e3 Nc6 5.Nf3 Bb7 6.Be2 Bd6 7.0-0 f5? (7...e4 8.Ne1+=) 8.d3 (8.b5 Na5 9.Ne5 Nf6+–) 8...Nf6 (8...a6 9.c4 Nf6 10.d4 ed4 11.ed4+=) 9.c4 (9.b5 Na5 10.Ne5 0-0+/–) 9...0-0 10.Nbd2 (10.b5!? Na5 11.Ne5+/–) 10...Qe8 11.e4 f4 (11...a5 12.b5 Ne7 13.Ne5+=) 12.d4 (better is 12.Qc2+/–) 12...ed4 13.Nd4 (better is 13.Re1=) 13...Ne4?? (better is 13...Be5!? 14.N2f3 Nd4 15.Ne5 Ne2 (worse is 15...Qe5 16.Bd4 Qg5 17.f3+=) 16.Qe2 Be4+=) 14.Ne4 (better is 14.Bh5!? g6 15.Ne4 Qe4 16.Bf3+–) 14...Qe4+= 15.Bf3 Qg6 16.Nc6 (16.Nb5 Rab8+=) 16...dc6 (16...Bc6 17.Re1+=) 17.Qd4 (17.c5 Be7+=) 17...c5 18.bc5?? (better is 18.Qg7 Qg7 19.Bg7 Bf3 20.Bf8 Bf8 21.gf3 cb4 22.ab4 Bb4 23.Ra6+=) 18...Bf3–+ 19.Qg7 Qg7 20.Bg7 Kg7 21.cd6 Be2 22.Rfe1 Bc4 23.Re7 Rf7 24.Rc7 (24.Rf7 Kf7 25.dc7 Rc8–+) 24...Rc7 25.dc7 Rc8 26.Rc1 Rc7 27.f3 b5 28.Kf2 Kf6 29.g3 Kf5 30.Re1 (30.gf4 a5–+) 30...Bd5 31.g4 Kf6 32.Re2 (32.Re8 Rc2 33.Ke1 Rh2 34.g5 Kf5–+) 32...Rc3 33.Rd2 Bf3 (33...Ke5 34.Rb2–+) 34.Rd6 Ke7 (34...Kg5 35.h3–+) 35.Rd4 Bg4 (35...Rc4!? 36.Rd3 Bg4 37.h3 Rc2 38.Kg1–+) 36.Rf4 Be6 37.Rb4 a6 38.a4 ba4 (38...Rc2 39.Kg3 Rc4 40.Rc4 bc4 41.Kf3–+) 39.Ra4 Rc6 40.Re4 Kd7 41.Rd4 Kc7 42.Ra4 Bc4 43.Ra1 Kb6 44.Kg3 Kc5 45.h4 Kb4 46.Rb1 Kc5 47.Rc1?? (47.Ra1 Rg6 48.Kh3–+) 47...Rd6 48.Rc2 Kb5 (48...a5!? 49.Rc1–+) 49.Rb2 Kc5 50.Ra2?? (50.Rc2 a5 51.Kf3–+) 50...Kd5 (50...Ba2 51.Kf3 Bd5 52.Ke2 a5–+) 51.Rb2 1–0. Fournier,Frederic (1835) – berto2 (1810), Active, 2008.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 b6).

4.e3 Bd6 5.Bd3+= Ne7 (5...Bb7 6.Qh5 Kf8 7.f3+=) 6.Qg4 0-0? (better is 6...Kf7!?+/–) 7.Qe4 (7.Qc4!? Rf7 8.Qe4 Nec6 9.Qh7 Kf8+–) 7...c6 8.Qh7 Kf7 9.Qh5 g6 10.Qh7 Ke8 11.Bg6 Ng6 12.Qg6 Rf7 13.h4 (13.Nf3 Bc7+–) 13...Qe7 (13...a5 14.Nf3 Bc7 15.h5+–) 14.h5 Kf8 (14...Kd8 15.h6 Rf8 16.Nc3+–) 15.h6 Rh7 16.Nf3 (16.d4 a5 17.Nf3 ab4 18.de5 Bc5 19.ef6 Qf7 20.Qg7 Ke8+–) 16...Qf7 17.Qg4 f5 (17...Bb7 18.d4 ed4 19.Nd4+–) 18.Qh4 (18.Qg3 Qf6 19.Be5 Be5 20.Qe5 Qe5 21.Ne5 d6+–) 18...Be7 19.Ng5 (19.Ne5?! Bh4 20.Nf7 Bf2 21.Kf2 Kf7+–) 19...Qg6 (19...Bg5 20.Qg5 Ke8 21.Be5+–) 20.Nh7 Kg8 (20...Qh7 21.Qg3 d6+–) 21.Qe7 Qg2 (21...Kh8 22.Be5 Kg8 23.Qf8 Kh7 24.Qh8) 22.Nf6 Kh8 23.Qh7 1–0. Wall,Bill – Owe John, internet, 2004.

4.e4 a5 5.b5+= Bb7 (5...Ne7 6.Qh5 Ng6 7.Bc4+=) 6.Nc3 Ne7 7.Bc4 d6 (7...c6 8.Qh5 g6 9.Qf3+=) 8.Nge2 (8.Nf3 d5 9.ed5 Nd5 10.Nd5 Bd5 11.Ne5 Bg2 12.Qh5 g6 13.Ng6 hg6 14.Qg6 Kd7 15.Qg4 Ke8 16.Qg2 Qe7 17.Kd1 c6+–) 8...d5 9.ed5 Nd5 10.0-0 Nc3 (10...c6 11.bc6 Bc6 12.Nd5 Bd5 13.Bd5 Qd5 14.Nc3+=) 11.Nc3 (worse is 11.dc3 Qd1 12.Rfd1 c6+=) 11...Nd7 (11...c6 12.Re1+=) 12.Nd5 (12.Re1 c6+/–) 12...Bd6 (12...c6 13.bc6 Bc6 14.Rb1+=) 13.d4 (13.Qg4 Kf8+/–) 13...Kf8 (13...c5 14.de5 Ne5 15.Qh5 g6 16.Qh4+–) 14.Re1 (14.f4 ed4 15.Bd4 c6 16.bc6 Bc6+/–) 14...h5 (14...g6 15.Qe2+/–) 15.Qd3 (15.Qf3 ed4 16.Bd4 Rh6+–) 15...ed4 (15...Rh6 16.Bc1 g5 17.Be3+/–) 16.Bd4 Nc5 (16...h4 17.Rad1+/–) 17.Bc5+– bc5 18.Rad1 Be5 19.Re5! fe5 (19...c6 20.bc6 Bc6 21.Qf5+–) 20.Qf5 1–0. Velker,Wim – Veer,Hans, corr ICCF TT–4–90 SF, 1994.

4.e4 Ba6 5.Ba6+/– Na6 6.Nf3 (6.Qe2 Qc8+/–) 6...Nb8 (6...c5 7.b5 Nc7 8.c4+/–) 7.Nh4 (7.0-0 Ne7+/–) 7...g6+= 8.Nc3 a6 (8...a5 9.b5+/–) 9.0-0 d6 10.Qg4 Qd7 11.Qg3 (11.Qe2 Ne7+=) 11...Ne7 (11...Bh6 12.d4+=) 12.Nf3+/– Bh6 13.Qh4 (13.d4 0-0+/–) 13...Bg7 14.d4 (better is 14.d3+=) 14...g5 (better is 14...h5!? 15.Qg3 g5+=) 15.Qh5+/– Ng6 16.de5 de5 17.Rfd1 Qe7 (17...Qc6 18.Nd5+/–) 18.Nd5+– Qf7 19.Be5! fe5 (19...fe5 20.Ng5 Combination; 19...Ne5 20.Nc7 Double attack) 20.Ng5 (20.Qg5?! 0-0+=) 20...Qg8 (20...Qd7 21.Nb6! cb6 22.Rd7 Nd7+–) 21.Qh3 Nc6 (21...Nd7 22.Nc7 Kf8 23.Rd7 Ne7 24.Qf3 Nf5 25.Qf5 Bf6 26.Qf6 Qf7 27.Qf7) 22.Nc7 Kf8 (22...Ke7 23.Rd7 Kf8 24.Qf5 Bf6 25.Qf6 Qf7 26.Qf7) 23.Qf5 1–0. Wall,Bill – RayJoe, internet, 1998.

4.e4+= c6 5.d4 d6 (5...ed4 6.Bd4 d5 7.ed5 Qd5 8.Nf3+=) 6.Bd3 ed4 7.Bd4 Na6 (7...d5 8.Nc3 de4 9.Be4+=) 8.b5 (8.Nf3 Nc7+/–) 8...Nb8 9.Nf3 c5 (9...a6 10.c4+/–) 10.Be3 a5 (10...Nd7 11.Bc4 Bb7 12.Nc3+/–) 11.0-0 g5 (11...Be6 12.Nbd2+–) 12.Bc4 Nh6 (12...Ne7 13.Nfd2+–) 13.Bd5 (13.Nc3 Bg7+–) 13...Ra7 14.Re1 Bb7 (14...Bg7 15.c3+–) 15.Nc3 Bd5 16.Nd5 Nd7 17.c3 Ng4? 18.Ng5! fg5 19.Qg4 h6 20.Qh5 1–0. kamret (2185) – Randalthor, GameColony.com, 2003.

4.e4 Nc6 5.Nf3 Bb7 6.Bc4 Bd6 7.b5 Na5+= 8.Bd3 Qe7 9.0-0 0-0-0 10.Re1 g6 11.Nc3 Bc5 12.h3 Qf7 13.a4 Ne7 14.Ba3 Nc4 15.Bc5+/– bc5 16.a5 d5? 17.ed5 Nb2+/– 18.Qb1 Nd3+= 19.cd3 Nd5 20.a6 Ba8 21.Na4 Nf4=+ 22.Nc5? Qd5?? 23.Na4?? Nd3?? 24.Re3= e4 25.Ne1 Qc4 26.Nd3+/– Rd3? 27.Rd3 ed3+= 28.Qb2 Qe4 29.f3 Qf5 30.Rf1 Re8+= 31.g4?? Qf4–+ 32.Qc1 Bf3 33.Qc6 Qg3 0–1. andre2004 – dugmak, ChessWorld.net, 2005.

4.e4 Ne7 5.Nf3 Bb7 6.Nc3 Ng6 7.Bc4+= Nc6 8.0-0 Be7 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Ne5 12.Bb3 Nc6? 13.Qd5+– Rf8 14.Qh5 g6 15.Qh7 Ne5 16.Nd5 Bd5 17.Bd5 c6 18.Be5 cd5 19.Qg6 Rf7 20.Bg3 d6 21.ed5 Qd7 22.Rfe1 Rc8 23.Re2 Rc4 24.Rae1 Rd4 25.Re7 Qe7 26.Re7 Ke7 27.h4 (27.h4 Rd1 28.Kh2 Rd5 29.Qe4 Re5 30.Qa8+–) 1–0. khani9 – savage13, ChessWorld.net, 2007.

5.c4 Nc6 6.Nc3 Nh6 7.Nf3 Bd6 8.d4 ed4 9.Nd4 0-0 10.h3 Nd4 11.Qd4 Nf7 12.Nd5 Bd5 13.Qd5 Qe7 14.Be2 Be5 15.Be5 Qe5 16.0-0 Rfd8 17.Bf3 c6 18.Qe5 Ne5 19.Be2 d5 20.c5 b5 21.Rfd1 a6 22.a4 Rdb8 23.ab5 ab5 24.Ra8 Ra8 25.f4 Nc4 26.Kf2 Ra4 27.Bc4 dc4 28.Rd6 Rb4 29.Rc6 c3 30.Ke2 Rb2 31.Kd1 b4 (31...Rg2?! 32.Rb6 Kf7 33.Rb5=) 32.Rb6 Kf7 33.c6 Ke6 34.Rb7 Kd6 35.Rg7 b3 (worse is 35...Kc6 36.Rg8 Kd5 37.Kc1–+) 36.c7 Rd2 37.Kc1 (37.Ke1 b2 38.c8N Kd5 39.Rb7–+) 37...b2 38.Kb1 Rd1 0–1. Rush,Bradley – Jas,Marcin, OP–2012–0-02117, 2012.

5.Be5 Ne7?? 6.Bd3?? fe5–+ 7.Qh5 g6 8.Qh3? a6 9.Nf3? e4 10.Qg3 ed3 11.cd3 Bg7 12.Ra2 d6 13.e4 Nbc6 14.Ng5 Qd7 15.Nc3 0-0-0 16.Nf7 Rhg8 17.Nd8 Qd8 18.b5 ab5 19.Nb5 Be5 20.Qe3 Rf8 21.0-0 Ba6 22.a4 Bb5 23.ab5 Nb8 0–1. malaysianisme – beammeupscotty (2115), net–chess.com, 2004.

5.Nf3 =.

5.bc5 bc5 6.Nf3 Nc6 7.Bc4 Nge7 8.d3 d5 9.Bb3 Bg4 10.h3 Bh5 11.c4 d4=+ 12.g4 Bg6 13.ed4 ed4 14.Nh4 Rb8 15.Ng6 Ng6–/+ 16.0-0 Be7 17.f4 Qc7 18.Ba4?? Rb2–+ 19.Bc6 Qc6 20.Nd2 0-0 21.Ne4 Nh4 22.Rb1 Rfb8 23.Rb2 Rb2 24.Rf2 Qb7 25.Rb2 Qb2 26.Qd2 Nf3 27.Kf2 Nd2 28.Nd2 Qd2 29.Kg3 Qe3 30.Kh4 Qf4 31.a4 Bd6 32.a5 Qg5# 0–1. nuttieclyde – TheSkyIsTheLimit, fics Oklahoma City, 2000.

5.bc5 Bc5 6.Nf3 Bb7 7.Be2 Bf3 (7...e4!? 8.d4 Be7+=) 8.Bf3+/– (8.gf3?! Nc6=) 8...Nc6 9.0-0 Rc8 10.c3 h5 (better is 10...f5!?+=) 11.d4 ed4 12.ed4 Bd6 13.Bh5 Kf8 14.h3 Qc7 15.Re1 Bh2 16.Kf1 0–1. Fournier,Frederic – Adeimi,Michel, Active, 2006.

5.d4 Bb7 6.bc5 ed4 7.ed4 bc5 8.dc5 Qa5 9.Nd2 Bc5 10.Qh5 g6 11.Qh4=.

5.d4 e4?? 6.c4?? (6.Qh5 g6 7.Qd5 Nc6+-) 6...d6?? (6...cb4 7.Qh5 g6 8.Qd5+=) 7.d5?? (better 7.Qh5 Kd7 8.Qd5+-) 7...f5 8.Ne2 Nf6 9.Nec3 (9.Nf4 Be7+=) 9...Ng4 (9...Be7 10.Be2+=) 10.g3 (10.Be2 Nf6+-) 10...a6 (10...Be7 11.Be2=) 11.Bh3 (11.Be2 Ne5+=) 11...h5 (11...Ne5 12.Bf1=+) 12.0-0 (better 12.Nd2=) 12...g5 (better 12...Ne5 13.Nd2 Nd3=) 13.f4?? (better 13.Ne4 Rh6 14.Ned2+-) 13...Ne3-/+ 14.Qa4 White intends b5 (14.Qe2 Nf1 15.Ne4 fe4 16.Bh8 Ng3 17.hg3 Bh3 18.Qh5 Kd7 19.Qh3 Kc7 20.bc5 dc5 21.Be5 Kb7 22.Nc3+-) 14...Bd7-+ 15.b5 (15.Qb3 Nf1 16.Bf1-+) 15...a5?? (15...Nf1 16.Ne4 fe4 17.Bd7 Qd7 (17...Kd7?! 18.Bh8 Bh6 19.Bc3-+; 17...Nd7?! 18.Bh8 Ne3 19.ba6-+) 18.Bh8 Ne3 19.fg5 Qh3-+) 16.Re1= h4?? (16...gf4 17.Ne4 fe4 18.Bh8 Bh3 19.gf4 Bg7 20.Re3 Bh8 21.Re4 Kd7-+) 17.Re3 (better 17.Ne4 fe4 18.Bh8 gf4 19.gf4 Bh3 20.Re3+-) 17...g4?? (17...Bg7 18.Kh1+-) 18.Bf1 (better 18.Ne4 fe4 19.Bh8 gh3 20.Re4 Kf7+-) 18...hg3 (18...Bg7 19.Qb3 Bd4 20.Ne4+-) 19.Rg3 (19.Ne4 fe4 20.Re4 Kf7 21.hg3 Bg7 22.Bg7 Kg7+-) 19...Qe7 (19...Bg7 20.Qc2 Bd4 21.Kh1+-) 20.Nd2 (better 20.Qc2!? Bg7 21.Na4+-) 20...Qh4+- Threatening mate: Qxh2 21.Ne2?? (better 21.Rg2 Bg7 22.Nb3+-) 21…Qh2 0-1. pat_cash87 - Mr_Jiras, lichess.org, 2020.

5.Qf3 Nc6?? 6.b5+– e4 (6...Bb7 7.bc6 Bc6+–) 7.Qe4 Ne5 (7...Qe7 8.Qf3 Bb7 9.bc6 Bc6 10.Qh5 g6+–) 8.Qa8 d5 9.Nc3 Ne7 10.Qa7 Bf5 11.d3 c4 (11...d4 12.ed4 cd4 13.Nce2 Bd3 14.Bd4+–) 12.d4 Nd7 13.Rc1 Nc8 (13...Be6 14.Nge2+–) 14.Qa8 (14.Qb7 Nd6 15.Qd5 Bg6+–) 14...Be6 (14...Ne7 15.Qb7 Be6 16.Nge2+–) 15.Nd5 Bd5 16.Qd5 Be7 17.Qc4 Nd6 18.Qd3 (18.Qd5 Nf7+–) 18...g6 (18...Qc8 19.Qb3+–) 19.Nf3 Qa8 20.Be2 0-0 21.0-0 Nf5 22.Qb3 Kg7 23.Qe6 Re8 (23...Qd8 24.c4+–) 24.Qd7 Kf8 25.Ra1 (better is 25.c4!? Nd6 26.c5 bc5 27.dc5 Ne4+–) 25...Rd8 26.Qc6 Qa4 27.Qc4 (better is 27.Bd3!? Rd6 28.Qb7 Qa5+–) 27...Qa7 28.a4 1–0. Hardin – DlGGER, Live Game Caissa's Web, 2004.

5.Qf3 d5 =.

5.Nc3 Nc6 6.Nf3 Qe7 7.Nd5 Qd6 8.Bc4 0-0-0 9.0-0 Nge7 10.Nc3 g6 11.Nb5 Qe6 12.Be6 de6 13.Nc3 Bh6 (13...Nd4 14.b5+–) 14.d3 a6 (14...Nd4 15.b5+–) 15.b5 Na5 (15...ab5 16.Nb5 g5 17.Ne1+–) 16.ba6 Ba6 17.Nd2 (17.Bc1 Bc1 18.Qc1 Nac6+–) 17...f5 (17...Nac6 18.Bc1+–) 18.Ne2 (18.Qe1 Nec6 19.Ncb1 Nd4+–) 18...Nec6 19.f4 Bg7 (19...fe4 20.Ne4 Nc4 21.Bc1+–) 20.Qe1 (20.Rb1 Bb7+–) 20...Rhg8 (20...Nd4 21.Rc1+–) 21.Rb1 Nd4 22.Nd4 ed4 23.ef5 (23.Nf3 Nc6+–) 23...ef5 24.Qe6 Kb8 25.Rfe1 (25.Nf3 Bc8 26.Qf7 Nc6+–) 25...Bc8 (25...Bb7 26.Qa2+–) 26.Qa2 (26.Qe7 Bb7+–) 26...Rgf8 (26...Bb7 27.a4+–) 27.Qa1 (27.Nc4 Nc6+–) 27...Nc6 (27...Bb7 28.Re7 Rg8 29.Rbe1+–) 28.Nc4 (28.Nf3 Rfe8+–) 28...Rf7 (28...Rfe8 29.Kh1+–) 29.Re2 (29.a4 Ba6+–) 29...Bd7 (29...Bf6 30.Nd2+–) 30.Ne5 (better is 30.a4!? Kb7+–) 30...Be5 31.fe5 Be6 32.a4 (32.Rf1 g5+–) 32...Rfd7 (32...Rd5 33.c4 dc3 34.Bc3+–) 33.Ba3 (33.Bc1 Rd5+–) 33...Ka7 (33...Rd5 34.Rbe1+–) 34.Qb2 (34.c4 Rb8+–) 34...Rd5 (34...Ka8 35.Qb5 Nb8 36.a5+–) 35.Bd6! (35.Bd6 R8d6 36.ed6 Rd6 37.a5 Na5 38.Re5+–) 1–0. Marshall,Ron – Richard,Andy, IECC, 1997.

5.Nc3 Qe7 6.Nf3 a6 7.Bc4 Nc6 8.Qe2 0-0-0? (better is 8...b5 9.Bb3 Qd6+=) 9.Ba6+– Nh6 10.Nd5 Qe8 11.0-0 d6?! (11...Qh5+–) 12.Qc4 Qf7 (12...Ba6 13.Qa6 Kb8+–) 13.Qc6 Ba6 14.Nb6 Kb8 15.Qa8 1–0. pierre (2125) – pbram143, internet, 2007.

5.Nc3 Ne7 6.Qh5 Ng6 (better is 6...g6!? 7.Qf3 Bg7+=) 7.Nf3+/– Qe7 8.Bc4 Nc6?? (better is 8...Kd8+/–) 9.Nd5+– Qd6 10.Nh4 0-0-0 (10...Nd4 11.Bd4 ed4 12.Ng6 hg6 13.Qh8 c6+–) 11.Ng6 Nd4 (11...hg6 12.Qh8 f5 13.Qh3+–) 12.Nh8 +–. Fritz 8 – NN, 2003.

4.c3 a5 5.Qb3 (5.bc5!? Bc5 6.d4+= Bb6 7.e3 d6 8.Nf3 Ne7+=) 5...ab4+= (5...Nc6 6.b5 Nce7 7.d4 d5 8.e4 ed4=) 6.ab4 (6.e4 Nc6 7.cb4 cb4 8.Nf3 ba3+=) 6...Ra1 7.Ba1 cb4 8.cb4 (8.e4 bc3+=) 8...Nc6 9.Bc3 Qb6 (9...Bb4 10.e4 Bc5 11.Bc4–/+) 10.e3 (10.b5!?=) 10...Bb4 11.Bb2 (11.Na3 Bc5 12.Nb5 Nh6+=) 11...Qa5 12.Bc3 Nge7 13.Be2 d5 14.Nf3 0-0 15.0-0 Be6 16.Rc1 Kf7 17.Bb4 (17.d4 e4 18.Ne1 Bc3 19.Rc3 Rb8–/+) 17...Qb4–/+ (17...Nb4?! 18.d4=) 18.Qb4 Nb4 19.h3 Nec6 20.Rc5 (20.d4–+) 20...Ra8 21.Nc3 d4 22.ed4 ed4 23.Ne4 Ra1 24.Kh2 (24.Bf1 Bd5 25.Ng3 Bf3 26.gf3 Nd3–+) 24...d3 25.Bd3 Nd3 26.Rc3 Ndb4 27.Nd6 Ke7 28.Nb7 Bd5 29.Nh4 g6 30.Nc5 Ra2 31.Re3 Kd6 32.Nb7 Kc7 33.Nc5 Rd2 34.Kg3 Ne5 35.Ne4 Nd7 (better is 35...Be4 36.Re4 Nd5–+) 36.Nd2+– Kd6 37.Nhf3 Nc6 38.Ne4 Be4 39.Re4 Nde5 40.Rh4 h5 41.Ne5 Ke5 0–1. mic (2200) – fbershadski (2285), net–chess.com, 2007.

4.c3 cb4 5.cb4 a5 6.b5 d5 7.d4 e4 8.Nc3 Be6 =.

4.c3 c4 5.e4 b5 6.Be2 Bb7 7.d3 cd3 8.Bd3 a6 9.Nf3 d5 10.ed5 Qd5 11.0-0 Ne7 12.Re1 g6 13.Qc2 Bh6 14.c4 bc4 15.Bc4 Qc6 16.Nbd2 Nd7 17.Re2 Nf5 18.Qe4 Qe4 19.Ne4 Be4 20.Re4 Nd6 21.Bd5 Ne4 22.Ba8 Nd6 23.Bc6 Ke7 24.Rd1 Rc8 25.Bd5 Rc2 26.Ba1 Nb6 27.Bb3 Rc1 28.Rc1 Bc1 29.a4 Nbc4 30.Ne1 Bb2 31.Bb2 Nb2 32.f3 Nbc4 33.Nd3 Nd2 34.Bc2 N6c4 35.a5 Na3 36.Ba4 Kd6 37.Kf2 Kc7 38.Ke3 Nac4 39.Ke2 Kb7 40.Be8 Nb1 41.Nc5 Ka7 42.Bf7 Nba3 43.Kd3 Nd6 44.Bg8 h6 45.Nd7 f5 46.Ne5 g5 47.h3 Nab5 48.Bd5 Nc7 49.Bc6 Ne6 50.g3 h5 51.Bd5 Nc7 52.Ba2 g4 53.hg4 hg4 54.fg4 fg4 55.Ng4 Nf5 56.Bf7 Ng3 57.Ne5 Nf5 58.Bh5 Nd6 59.Bf3 Kb8 60.Kd4 Ncb5 61.Kc5 Kc7 62.Nc4 Nc4 63.Kc4 Na3 64.Kc5 Nb5 65.Bc6 Nd6 66.Ba4 Ne4 67.Kd5 Nc3 68.Kc4 Na4 69.Kb3 Nb6 70.ab6 Kb6 71.Ka4 Kb7 72.Ka5 Ka7 73.b5 Draw agreed ½–½. Mango Mick – nimzo1, ChessWorld.net, 2014.

4.c3 Nc6 5.e4 d5 6.ed5 Qd5 7.d3 Bf5 8.b5 Nce7 +=.

4.Bc3 d5 5.bc5 (5.e3 Nc6+=) 5...Bc5 (5...d4 6.Bb2+=) 6.d4 ed4 7.Bd4 Qa5 (7...Bd4 8.Qd4 Nc6 9.Qd2+=) 8.Bc3= Qb6 9.e3 Qc6 (9...Ne7 10.Qh5 g6 11.Qd1=) 10.Nf3 Nh6 11.h3 0-0 12.Bd3 Nd7 (12...Nf5 13.Bb4=) 13.0-0+= d4 (better is 13...b5!?+=) 14.Nd4 Bd4 15.Bd4 (15.ed4 b5+/–) 15...f5 (15...Ne5 16.Nc3+/–) 16.Nd2 f4 (16...Nc5 17.Qh5+–) 17.Qh5 Nf6 18.Bf6 (18.Qg5 fe3 19.fe3 Nf7+–) 18...Qf6 19.Ne4 Qf7 (19...Qc6 20.Qc5 Qg6 21.Qd6+–) 20.Qf7 Rf7? (better is 20...Nf7 21.ef4 Be6+–) 21.Bc4 Bf5 22.Nd6 (worse is 22.Bf7 Nf7 23.Nc5 Rc8 24.Nb7 Be4+–) 22...Bc2 23.Nf7 (23.Rac1 Bg6+–) 23...Nf7 24.Rac1 Be4 25.ef4 Rc8 (25...Bc6+–) 26.Bf7 Kf7 27.Rc8 1–0. wlittle (1705) – michal, net–chess.com, 2001.

4.bc5 d5 5.d4 (5.cd6 Be6+=) 5...ed4 6.Bd4 Nc6 7.e3 (7.c3 Bf5+=) 7...Bc5 8.Nf3 (8.Bc5 Qa5 9.Bb4 Nb4=) 8...Bd4 (8...Bd6 9.Bd3=) 9.Nd4 Nd4 (9...Nge7 10.c3=) 10.Qd4 Ne7 11.Bb5 (11.Nc3 Be6=) 11...Bd7 12.Bd7 (12.Bd7 Qd7 13.0-0=; 12.Bd3 Qa5 13.Qc3 Qc3 14.Nc3 a6+=). shoulders – smoothmovermovesagain, ChessWorld.net, 2006.

4.d3 Nc6 5.e4 (5.c3 d5=+) 5...Bd6 (5...cb4 6.ab4 Bb4 7.c3-/+) 6.Nd2 (6.c3 Be7=) 6...Nge7 (better 6...cb4!? 7.Nc4 Be7=+) 7.Nc4+= Qc7 8.Nf3 (8.b5 Na5+=) 8...0-0 (8...cb4 9.d4 ba3 10.Nd6 Qd6 11.Ba3=+) 9.Be2 (9.c3 Ng6+=) 9...b5 (9...cb4!? 10.Nd6 Qd6=) 10.Nd6+= Qd6 11.0-0 (11.bc5 Qc5 12.d4 ed4 13.Bd4 Nd4 14.Qd4 Qd4 15.Nd4 Bb7 16.Bb5 Be4+-) 11...Bb7 (11...cb4 12.d4 ba3 13.Ra3=+) 12.Nh4 (12.bc5!? Qc5 13.c3+=) 12...f5 (12...cb4 13.ab4 Qb4=+ (worse 13...Nb4 14.Ba3+=)) 13.Bh5? (13.c4 a6=) 13...fe4 (13...cb4 14.Nf5 Nf5 15.ef5 ba3 16.Ba3-/+) 14.Bg4 (14.de4 Qh6 15.Bc1 Qf6=) 14...Nd4 (14...ed3 15.bc5 Qc5 16.Qd3-/+) 15.Bd4? (15.c3!? Ne6 16.de4=) 15...ed4 (better 15...cd4 16.de4 Be4-/+) 16.Nf5?? (better 16.de4 cb4 17.ab4 Be4 18.Re1-/+) 16...Nf5-+ (16...Rf5?! 17.Bf5 Nf5 18.de4 Be4 19.Re1-+) 17.Bf5 (17.de4 Be4 18.Re1-+) 17...ed3 (17...Rf5 18.de4 Be4 19.Qe2-+) 18.cd3?? (better 18.Qd3!? h6 A) worse 19.Qb5 Bg2 (19...Rf5?! 20.Qb7 Qc6 21.Qc6 dc6 22.Rfd1=) 20.Kg2 Rf5-/+; B) 19.bc5 Qc5 20.Bh3=+) 18...Bg2 (18...Rf5!? 19.bc5 Rc5 20.Qg4-+) 19.Qh5? (better 19.bc5 Qd5 20.Be4 Be4 21.de4 Qe4 22.Qb3 Kh8 23.Rae1-+) 19...g6 (19...Bf1?? 20.Bh7 Kh8 21.Bg6 Kg8 22.Qh7) 20.Bg6 (20.Qg5 Bf1 21.Be4-+) 20...Qg6 (better 20...hg6 21.Qg5 Bf1 22.bc5 Qe6 23.Rf1 Rf5-+) 21.Qg6 hg6 22.Kg2 c4 23.dc4 (better 23.a4!? a6 24.Rfe1-/+) 23...bc4-+ 24.Rac1 Rad8?? (better 24...d5-+) 25.Rc4+- Rf4 26.Kh1 (26.Rc7 a6+-) 26...g5 (26...d5 27.Rc6 Kg7 28.Rg1+=) 27.Rd1 (27.Rc7 a6+-) 27...d5 28.Rcd4 Rd4 29.Rd4 Kf7 30.Kg2 Kf6 (30...Ke6 31.b5+=) 31.Kg3 Rd6 (31...Ke5 32.Rg4 Rg8 33.Kf3+=) 32.f4+- Kf5 33.fg5 Kg5 34.h4 Kh5 (34...Kf5!?+-) 35.a4 Rd7 36.b5 Rd6 (36...Rg7 37.Kh3 Rd7 38.a5+-) 37.a5 (37.Kf4 Rd7+-) 37...Rd7 38.b6 (38.Kf4 Rb7 39.Rb4 Kh4 40.Ke5 d4 41.Kd4 Kg5+-) 38...a6 (38...ab6 39.ab6 Kg6 40.Kf4+-) 39.Kf3 Kh6 (39...Rd8+-) 40.Kf4 Kh5 (40...Re7 41.Rd5 Re8 42.b7+-) 41.Ke5 Rd8 42.Rd5 Rd5 (42...Rf8+-) 43.Kd5 Kh4 44.b7 (44.b7 Kg4 45.Kc5+-) 1-0. SieStein – ljubicamilic, lichess.org, 2019.

4.e3 b6 5.Be5 fe5?? (better is 5...Nc6 6.Bf4 cb4+=) 6.Qh5+– g6 7.Qe5 Ne7 8.Qh8 Nf5 (8...h6 9.Nf3+–) 9.bc5 Qe7 10.cb6 ab6 11.Ra2 d6 12.Rb2 Nd7 13.Nf3 Qf7 14.Ng5 Qg7 15.Qg7 Bg7 16.d4 Nc5 (16...Bb7 17.Nh7 Nh4 18.Rg1+–) 17.Rb6 Na4 (17...Nd7 18.Rb4 Nf6 19.e4+–) 18.Rb4 Bd7 19.Nh7 Rc8 20.Kd2 Bh6 (20...Ra8+–) 21.Nf6 Ke7 22.Nd7 Kd7 23.Bb5 (23.Bb5 Ke6 24.Ba4+–) 1–0. jasa – Dingleberry, ChessWorld.net, 2002.

4.e3 Qb6 5.Nc3 (5.c3 a5=) 5...a6 (5...cb4!? 6.ab4 Bb4=) 6.Nd5 Qd6 7.Bc4 (7.Qh5 Kd8 8.c4 b6+/–) 7...Ne7 8.Qh5 g6 (8...Kd8!? 9.Ne7 Qe7 10.bc5 Qc5+=) 9.Nf6!+/– Qf6 10.Qe5 Qh4?? (better is 10...Qe5 11.Be5 d5 12.Bd5 Nd5 13.Bh8 cb4+=) 11.d3 (11.d3 d5 12.Nf3+–; 11.Qh8?! Qc4 12.Bg7 Ng8 13.Bf8 Kf8 14.Qh7 Qc2+–; 11.bc5?! Qc4 12.Qh8 Qc5+/–) 1–0. Wall,Bill – Tiger111, internet, 2001.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c5).

4.e4 a6 5.Nc3+/– b5 (5...Nc6 6.Nf3+/–) 6.bc5 Bc5 7.a4 b4 8.Nd5 Bb7 9.Bc4 Ne7? (better is 9...Nc6!?+/–) 10.Qh5+– g6?? (better is 10...Ng6 11.Nf3 Nc6+–) 11.Nf6 (11.Nf6 Kf8 12.Qh6) 1–0. pierred – anony, internet, 2014.

4.e4 Nc6 5.Bc4 (5.b5 Nce7=) 5...cb4+= 6.Bg8 Rg8 7.Qh5 g6 8.Qh7 Qe7?? (better is 8...Rg7 9.Qh4 d5+=) 9.Qg8+– d6 (9...Qf7 10.Qf7 Kf7 11.Ne2+–) 10.Qg6 Qf7 11.Qf7 Kf7 12.Nf3 Be6 13.0-0 (13.h4 d5 14.d3 b5+–) 13...Be7 14.d4 Rd8 (14...d5 15.ed5 Bd5 16.de5 Bf3 17.e6 Ke6 18.gf3 Rg8 19.Kh1 Bc5+–) 15.d5 Bg4 (15...ba3 16.Ra3 f5 17.de6 Ke6 18.ef5 Kf5 19.Rb3+–) 16.dc6 bc6 17.ab4 d5 (17...Rd7 18.Nfd2+–) 18.h3 (18.ed5 Bf3 19.gf3 cd5 20.Ra7 Ke6+–) 18...Be6 (18...Bf3 19.gf3 Bb4 20.Ra7 Ke6 21.Rd1+–) 19.Ra7 (19.ed5 Bd5 20.Ra7 Ke8+–) 19...d4 (19...de4 20.Nfd2 Rd7 21.Rd7 Bd7 22.Bc3+–) 20.Rd1 Ke8 21.c3 Bb3 22.Rd2 d3 23.Nh4 (23.Ne1 Bf8 24.Na3 f5 25.Rd3 fe4 26.Rd8 Kd8+–) 23...c5 24.Nf5 Bd6 25.Nd6 (better is 25.Rd3!? Bc7 26.Rd2 Rc8+–) 25...Rd6 26.bc5 Rd8 27.Ba3 1–0. Nylson – FabianW, playchess.de, 2002.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.c4?? (better is 8.Nc3+=) 8...Qa1–+ 9.Nc3 Qd1 10.Nd1 d5! 11.d3 (11.cd5 Bd6 Combination) 11...dc4 12.dc4 Nd7 (12...f5 13.g3–+) 13.Nc3 Nb6 14.e3 (14.e4 f5–+) 14...Be6 15.f4 Bc4 16.fe5 Bf1 17.Kf1 fe5 18.e4 (18.Nf3 Bd6–+) 18...Nf6 19.Nf3 Bd6 20.Kf2 0-0 21.Rd1 Ne8 22.h3 c4 23.Ra1 (23.Ke2 Kf7–+) 23...Bc5 24.Ke2 Bd4 25.Rc1 Bc3 26.Rc3 Nd6 27.Ne5 Nb5 (27...Re8 28.Nf3 Nd5 29.Rc2 Re4 30.Kd2 Nb5 31.Ra2–+) 28.Rc1 (28.Rc4 Nc4 29.Nc4 Kf7–+) 28...Re8 29.Nc4 (29.Nf3 Re4 30.Kd2 Nd5–+) 29...Re4 30.Kd3 Rd4 (30...Rd4 31.Ke2 Nc4–+) 0–1. M8IN3 – GARYPAULN, Live Game Caissa's Web, 2005.

5.a4 ab5+= 6.ab5 Ra1 7.Ba1 d5 8.e3 d4 9.ed4 cd4 10.Nf3 Bf5 11.Nh4 Bg6 (better is 11...Be6+=) 12.Bd3?? (better is 12.Ng6 hg6 13.Qf3+=) 12...Bd3–+ 13.cd3 Bb4 (better is 13...Qa5!? 14.Qh5 Kd8 15.Bd4 ed4 16.Qd5 Nd7 17.Qb7 Bc5–+) 14.Qh5+= g6?? (better is 14...Kf8 15.Ng6 hg6 16.Qh8 Qa5+=) 15.Ng6!+– hg6 16.Qh8 Kd7 (16...Kf8 17.Qh7 Qd5 18.0-0+–) 17.Qg7 (17.0-0 Bd6+–) 17...Ke6? (better is 17...Ne7 18.0-0 Qa5+–) 18.Qg6 Ne7 19.Qe4 Qa5? (19...Qb6+–) 20.Bd4 Bd2 (20...Qb5 21.Bc3 Bd6+–) 21.Nd2 Qa1 (21...Qb5 22.f4 Nbc6 23.fe5 fe5+–) 22.Ba1 (22.Ba1 Nd7 23.Qb7+–) 1–0. tromar (1775) – NN, GameColony.com, 2002.

5.ba6 Na6 6.e4 c4 7.Bc4+/– Bc5 (7...Nc5 8.Qh5 g6 9.Qf3+/–) 8.d4 ed4 (8...Qb6 9.dc5 Qb2 10.Ra2+/–) 9.Bd4 Qa5 (9...Bd4 10.Qd4 Qa5 11.Nc3+/–) 10.Bc3+– Qb6 (10...Qc7 11.Qh5 g6 12.Qe2+–) 11.Qd2 (11.Qh5 Kd8 12.Nh3 Ne7+–) 11...Nh6 (11...Nc7 12.Qe2+/–) 12.Nf3 d6 (12...Ng4 13.Bd4+/–) 13.Bd4 (13.0-0 Ng4 14.a4 Qc7 15.Bb5 Bd7+–) 13...Bd4 (13...Bg4 14.c3+/–) 14.Qd4 Qd4 15.Nd4 Ng4 (15...Bd7 16.Nc3+/–) 16.0-0 (16.Nc3 Nc7+–) 16...Ne5 17.Bd5 Nc7 (17...Nc5 18.f4 Ng6 19.Nc3+/–) 18.Bb3 (18.Nc3 Nd5 19.Nd5 Ra4+–) 18...Bd7 (18...Ke7 19.Nc3+/–) 19.Nc3 Ke7 20.Nd5 (20.Rfd1 Rhc8+/–) 20...Nd5 21.Bd5 Bc6 (21...Ra4 22.Rfd1+/–) 22.Nc6 (better is 22.Bc6!? bc6 23.Rfb1+–) 22...bc6+/– 23.Bb3 Ra7 (23...Ra5 24.Rfd1+/–) 24.f4 (24.Rfb1 Rha8+=) 24...Nd7 25.Kf2 (25.Rf3!?+/–) 25...Rha8= 26.a4 Nc5 27.Kf3 (better is 27.Ke3=) 27...g5 (better is 27...Na4!? 28.Ke3 Nc5 29.Ra7 Ra7=) 28.fg5+/– fg5 29.Rfe1 (29.Ke3 Nb3 30.cb3 Rb8+/–) 29...Na6? (better is 29...h5!?=) 30.Ra3 (30.e5 Nc5+/–) 30...Nb4 (30...Nc5 31.Ke3+/–) 31.Ke3 d5 (31...Na6 32.Rf1+/–) 32.ed5 (32.c3 Na6 33.ed5 Nc5 34.dc6 Nb3 35.Rb3 Kd6+–) 32...cd5? (32...Nd5 33.Kd4 Kd6 34.g3+/–) 33.Kd4?? (better is 33.c3 Nc6 34.Rd1+–) 33...Kd6+/– 34.c3 (34.Rd1 Nc6 35.Kd3 Re8+=) 34...Nc6+= 35.Kd3 Na5 (35...Ne5 36.Kc2 Rf7+=) 36.Rb1 (36.Bc2!?+=) 36...Nb3= 37.Rbb3 (37.Rab3 Ra4 38.Rb6 Ke5 39.Re1 Re4 40.Re4 de4 41.Ke3 Rc8 42.Rb5 Kf6 43.Ke4 Rc3 44.Rb6 Kf7=) 37...Ra4 38.Ra4 (38.Rb6 Ke5 39.Ra4 Ra4=) 38...Ra4 39.Rb4 (39.Rb6 Kc5 40.Rh6 Ra2=) 39...Ra2 40.Rg4 h6 41.h4 gh4 42.Rh4 Rg2 43.Rh6 Kc5 ½–½. Kowalski,Lukasz – Scibior,Adam, Poland–ch U10 Kolobrzeg, 2001.

5.ba6 Na6 6.e4 d5 7.ed5 Qd5 8.c4 (8.Nc3 Qe6=) 8...Qe4+= 9.Qe2 Qe2 10.Be2 Bd6 11.Nc3 Bf5 12.Nb5 Rd8 13.Bf3 e4 14.Be2 Bf4 15.Rd1 Nh6 16.g3 Bb8 17.f3 Nc7 18.d4? (better is 18.Nc3 ef3 19.Nf3=) 18...ed3–+ 19.g4 Bg6 (19...de2?! 20.Rd8 Kd8 21.gf5–+) 20.Bf1 (20.g5 Ng8 (20...de2?! 21.Rd8 Kd8 22.gh6+=; 20...fg5?! 21.Bg7 Nb5 22.cb5–+) 21.Bf1 Nb5 22.cb5 Bf4–+ (22...fg5 23.Bg7 Bf4 24.Kf2+=)) 20...Nb5 21.cb5 0-0 (21...Ng4 22.fg4 Be4 23.Bd3 Bh1 24.h3–+) 22.Nh3 Rfe8 23.Kf2 d2 (better is 23...c4–+) 24.Bc4 Kf8 25.Bc3 Bd3 (25...Be5 26.Ba5 Rd4 27.Be2–+) 26.Bd3 Rd3 27.Bd2 Ng4! 28.fg4 Rh3 29.a4 b6 (29...Re4!? 30.a5–+) 30.a5–/+ Ba7 (30...ba5 31.Ba5 Rb3 32.Rb1 Rb1 33.Rb1 Bh2 34.Rh1–/+) 31.a6 Rb3 (31...Bb8 32.Rc1+=) 32.Bf4 (32.Rb1 Rd3 33.Rb2 Re4+=) 32...Rb5 33.Rd7 Ra8 (33...Rb2 34.Kf3 Rb3 35.Kf2 Bb8 36.Bb8 Rb8=) 34.Rhd1?? (34.Bd6 Kg8 35.Re1 Rb2 36.Kf1+/–) 34...Ra5–/+ 35.Rd8 (35.Bd6 Kg8 36.Re1 Ra6 37.Ree7 Ra2 38.Ke3 Ra3 39.Kd2+/–) 35...Rd8–+ 36.Rd8 Ke7 37.Rh8? (37.Ra8 Ra6 38.Bb8 Kd7–+) 37...h6 (37...Ra6 38.Rh7 Kf7 39.Rh8–+) 38.h4? White intends g5 (better is 38.Bh6 b5 39.Bg7 Ra6 40.Bf8 Kf7 41.Ke2–+) 38...Ra6 39.Ra8 Ra5 40.g5 (40.Be3 Ke6–+) 40...hg5 41.hg5 c4 42.gf6 gf6 43.Be3 Kd7 44.Bb6 Bb6 (44...Bb6 45.Ke2 Ra8–+) 0–1. Browne,Norman – Ricks,Breon, Detroit op1, 2003.

5.ba6 Na6 6.e4 Ne7!? =.

5.c4 d5 6.Qc2 Qd7 (6...ab5 7.cb5 Be6 8.e4+=) 7.a4 (7.cd5!? ab5 8.e4=) 7...ab5+= 8.ab5 Ra1 9.Ba1 d4 10.e3 Qf5 11.Bd3 Qg5 12.Be4 f5 13.Bd5 Nf6 Black plans e4 14.g3 (14.Nf3 Qg2 15.Rg1 Qh3 16.Bf7 Ke7+=) 14...de3 (better is 14...Nd5!? 15.cd5 Qd8–/+) 15.de3+= e4 (15...Nd5 16.cd5 Qd8 17.e4+= (17.Be5? Qd5 18.Bg7 Qh1 19.Bh8 Qg1 20.Ke2 Qh2–+)) 16.Qd2 (16.Bf6 Qf6 17.f3 ef3 18.Nf3 Qe7+=) 16...Nbd7 17.Qa5 (17.f4!? Qg6 18.Bf6 Nf6 19.Nc3=) 17...Nd5–/+ 18.cd5 Qd8 19.Qd8 Kd8 20.Nh3 Nb6 21.Ng5 Ke7 22.Nc3 h6 23.Nh3 Kd6 24.Nf4 Rg8 25.h4 g5 26.Nh5 Be7 (26...Nd5? 27.Nd5 Be6 28.Nhf6 Bd5 29.Ng8+–) 27.g4? (27.hg5 Bg5 28.Nf4 Bf4 29.ef4 Rg6–/+ (29...Nd5?! 30.Na4=)) 27...Nd5 (27...gh4!? 28.gf5 Bf5 29.Nf4–+) 28.gf5 Bf5 (better is 28...Nc3!? 29.f6 Nb5 30.fe7 Ke7 31.hg5 hg5–/+) 29.Ng3+= Bh7 (29...Bg6 30.Nge4 Ke5 31.hg5 Be4 32.Ne4 Ke4 33.gh6+=) 30.Nce4 (better is 30.hg5!? Nc3 31.Rh6 Bg6 32.Nf5 Kd7 33.Ne7 Ke7 34.Bc3+=) 30...Be4= 31.Ne4 Kc7 32.Ke2 (better is 32.hg5!? hg5 33.Rh6=) 32...gh4–/+ 33.Rd1 Nb4 (better is 33...Rd8!?–/+) 34.Be5= Kb6 35.Rd7 Bg5 (better is 35...Re8 36.Nc3 Bf8=) 36.Ng5?? (better is 36.Nd6 Nd5 37.f4+/–) 36...hg5–+ (36...Rg5?! 37.Bf6 Rh5 38.Bd8 Kb5 39.Rb7 Kc4 40.Rg7–/+) 37.Rh7 Kb5 38.Rb7 Ka4 (38...Kc4 39.f3–+) 39.Rh7 Kb3 (better is 39...c4!?–+) 40.f4–/+ gf4 41.ef4 Rg4 42.f5?? (better is 42.Kf3 Rg3 43.Ke4+=) 42...Re4–+ 43.Kd2 (43.Kf3 Re5 44.Kf4 Nd3 45.Kg4 Re4 46.Kg5–+) 43...Re5 44.f6 Rf5 (better is 44...c4 45.Rc7 h3 46.f7–+) 45.f7 h3! 46.Rh3 Ka4 (46...Kc4 47.Rh4 Kb5 48.Rh7–+) 47.Rh7?? (better is 47.Rh5 Rf7 48.Rc5 Rd7 49.Ke3–/+) 47...c4 (better is 47...Kb5–+) 48.Kc1 0–1. Vaskovets,Aksiniia – Mocanu,Paula, Wch U08 girls, 2012.

5.e4 d5 6.ed5 Qd5 =.

5.c4 d6 6.e3 Be6 7.Nf3 Nh6 8.d3 Be7 9.Be2 0-0 10.0-0 Qc7 (10...a6 11.Nc3=) 11.h3 (11.Nfd2 a6+=) 11...Nd7 12.Nfd2 Nf5 (12...f5!?+=) 13.Bf3+/– Rab8 14.a4 (14.Nc3 Rbe8+/–) 14...Nh4 15.Bg4 (15.Bc6!?+/–) 15...f5= 16.Bf3 Nf3 17.Nf3 e4 18.de4 fe4 (18...Bc4!? 19.ef5 Bf1 20.Kf1 Rf5–/+) 19.Nfd2= d5 (19...Bf6!? 20.Bf6 Nf6=) 20.cd5+/– Bd5 21.Qg4 (21.Nc3 Be6+/–) 21...Bf6 (21...Nf6 22.Qe2+=) 22.Bf6 (22.Nc3 Bc3 23.Bc3 Ne5=) 22...Nf6+= (worse is 22...Rf6 23.Nc3 Be6 24.Qe4+/–) 23.Qe2 Qe5 24.Na3 Nd7 25.Nac4 Bc4 (better is 25...Qe6!?=) 26.Qc4+/– Kh8 27.Ne4 Rbd8 28.Rad1 Nf6 29.Nf6 Qf6 30.Qf4 (30.Rd8!? Rd8 31.Qe4+/–) 30...Qf4+= 31.ef4 Kg8 32.g3 h5 33.Kg2 Rd4? (33...Kf7!?+=) 34.Rd4+/– cd4 35.Rd1 Rd8 36.Rd3 Kf7 37.Kf3 Ke6 38.Ke4 Rd5 39.Rd4 Rc5 40.f3 g6 41.g4 h4 (41...Rc1 42.f5 gf5 43.gf5 Kf6 44.Rd6 Ke7 45.Rc6 Re1 46.Kf4+–) 42.f5! gf5 43.gf5 Rf5 (43...Ke7+–) 44.Rd6! Kd6 45.Kf5 Kc5 46.Ke5 Kb4 47.Kd4 Ka4 48.Kc4 Ka5 49.f4 a6 50.ba6 Ka6 51.f5 Ka5 52.f6 b5 53.Kb3 b4 54.f7 Kb5 55.f8Q 1–0. Hal1958 – Bolluyt, playchess.de, 2004.

5.e3 Bb7 6.Nf3 Nh6 7.d3 Bd6 (7...a6 8.ba6 Na6 9.Be2=) 8.Be2 Qc7 (8...0-0 9.Nc3=) 9.h3 (9.c4 a6+=) 9...g5 (9...a6!?=) 10.Nc3 (10.e4+/–) 10...g4 (better is 10...a6!?+=) 11.hg4+– Ng4 (better is 11...Nf7+–) 12.Qd2 (12.Nd2!? Bg2 13.Rg1 Nf2 14.Bh5 Kd8+–) 12...a6 (12...Bf8 13.e4+/–) 13.e4 ab5? (better is 13...Bf8+/–) 14.Nb5 Qc6 15.Nd6 Qd6 16.Nh4 h5 (16...Be4 17.Bg4 (17.de4?! Qd2 18.Kd2 Nf2+/–) 17...Bd5 18.Nf5+–) 17.Nf5 Qf8 18.Bg4 (better is 18.Bc1+–) 18...hg4+/– 19.Rh8 Qh8 20.Nd6 Ke7 21.Nb7 Qh1? (21...Ra7 22.Nc5 bc5 23.Qe3+/–) 22.Ke2+– Qg2 23.Qe3 (23.Qh6 Qf3 24.Kd2 Nc6+/–) 23...Nc6 24.Nc5 Nd4 25.Bd4 (25.Qd4 ed4) 25...ed4 26.Qd4 Threatening mate... how? 26...bc5 (26...Qf3 27.Kd2 Qf4 28.Ke1 bc5 29.Qc5 Ke8 30.Qh5 Ke7 31.a4+–) 27.Qc5 d6 (27...Ke8 28.Qf5 Ke7 29.Rb1+–) 28.Qc7 (28.Qf5 Rb8+–) 28...Ke6 29.Qc4 Ke7 30.Rb1?? (better is 30.Qd4+–) 30...Kf8?? (better is 30...Qf3 31.Kd2 Qf2 32.Kc3 Ra3 33.Kb2 Ra7=) 31.Rb7+– Qf3 32.Ke1 (32.Kd2 Qf2 33.Kc1 Qg1 34.Kb2 Qb6 35.Rb6 Kg7 36.Qc7 Kh6 37.Qd6 Rf8 38.Qf8 Kh5 39.Qh8 Kg5 40.Qf6 Kh5 41.Rb5) 32...Qh1 33.Kd2 Qh6 34.Ke2 Qg6 35.Qe6 Re8 (35...d5 36.Qd5 Re8 37.Qd6 Kg8 38.Rb8 Rb8 39.Qb8 Kf7 40.Qc7 Ke8 41.Qc6 Kd8 42.d4+–) 36.Qd6 Kg8 37.Qd5 (better is 37.Rb8!? Rb8 38.Qb8 Kf7 39.Qc7 Ke8 40.Qc6 Kd8+–) 37...Kf8 38.Qc5 Kg8 39.a4 g3 (39...f5 40.Kf1+–) 40.fg3 (40.Qd5 Kh8 41.fg3 f5+–) 40...Qg4 (40...f5 41.Qd5 Kh8 42.Qf7 Qf7 43.Rf7 fe4 44.a5+–) 41.Kd2 Qg5 (41...Qg6+–) 42.Kc3 (better is 42.Qg5 fg5 43.Rb5+–) 42...Qc5–+ 43.Kd2 (43.Kb3–+) 43...Qc2 (43...f5 44.c3 fe4 45.de4 Qf2 46.Kc1 Re4 47.Rb8 Kf7 48.Rb7 Ke6 49.Rb6 Kd7 50.Rb7 Kc8 51.Rb8 Kb8 52.a5 Re1) 44.Kc2+– Rc8 45.Kd2 Ra8 (45...Ra8 46.Rb4 Kf8+–). revbodio (1825) – kilmer, Live Game Caissa's Web, 2007.

5.e4+= Bb7 6.Nc3 Ne7 7.Bc4 a6 8.Nf3 (8.Qh5 Ng6+=) 8...ab5= 9.Bb5 Ba6 (9...Nbc6 10.Bc4+=) 10.Ba6 Na6 11.d3 d6 12.0-0 g6 13.Qe2 Bg7 14.Rfb1 0-0 15.Bc1 Nb8 (15...f5 16.Bg5 Bf6 17.Be3+=) 16.Rb3 Nd7 17.Bb2 (17.Rab1 f5+=) 17...Qc7 (17...f5 18.Rb1=) 18.Nb5 Qc6 19.c4 f5 20.Rb1 Nf6 21.Ng5 fe4 (21...Qd7 22.Qf3+=) 22.de4 Nh5 (22...Qd7 23.Rd3 Ne8 24.Qd2+/–) 23.Qd3+/– Rf6 24.Nh3 Nc8 25.Nc7 Ra4 26.Nd5 Rf7 27.Ng5 (27.Rb5 Nf6+/–) 27...Rfa7 (27...Nf4 28.Qd2 Rf8 29.Nf4 Rf4=) 28.Ne6+/– Bh6 29.Bc1 (29.Nd8 Qd7 30.Nb6 Nb6 31.Rb6 Qd8 32.Be5 A) 32...Ra3 33.Qd5 Rf7 34.Rb8 (34.Bd6 Qb6 35.Qf7 Kf7–+; 34.Qd6 Qd6 35.Bd6 Ra4=; 34.Rd6?! Qe7+=) 34...Qb8 35.Rb8 Bf8 36.Rb7 Ra1 37.Ba1 Be7 38.Re7 Nf6 39.Qf7 Kh8 40.Bf6; B) 32...Bf8+/–) 29...Bc1 30.Rc1 Ng7 31.Qh3 (31…Ne6 32.Qe6 Kg7 33.Qf6 Kg8 34.Qd8 Kg7 35.Rf3+–) 1–0. Behrmann,Klaus – Lynch,John, compuserve, 1996.

5.Nc3 d4+= 6.Ne4 (6.Na2+=) 6...Bf5 (6...f5!? 7.Ng3 f4–/+) 7.Ng3= Bg6 (7...Be6 8.e3=) 8.Nf3 (8.e3 Ne7+=) 8...Bd6 (8...Nd7 9.e3+=) 9.Nh4 +/–. marre – tcuw, internet, 2010.

5.c4 Ne7 6.Qc2 (6.cd5 Nd5 7.Qc2 a6 8.e4 Nf4 9.g3+=; 6.e3 Be6 7.Qc2 a6 8.Nf3 Qd7 9.cd5+=; 6.Nf3 e4 7.Ng1 dc4 8.Qc2 Bf5 9.e3+=; 6.Qa4 Be6 7.cd5 Nd5 8.Nc3 Nb6 9.Qc2+=) 6...Bf5 7.d3 Be6 8.e4 d4 9.Be2 +=.

5.e3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c5 5.b5).

5.h3 Bd7 6.e3 (6.e4 de4 7.Nc3 a6 8.ba6 Na6 9.Ne4 Bc6 10.Qh5 g6 11.Qe2 Bg7 12.Nf3) 6...e4?? (6...Ne7 7.f4 (7.Nc3 Be6 8.Be2 Kf7 9.Nf3 e4 10.Nh2 Nd7 11.0-0 f5 12.f3; 7.Nf3 Be6 8.Nc3 e4 9.Nh2 Nd7 10.Be2 Ng6 11.0-0 Bd6 12.d3; 7.Be2 a6 8.Nc3 ab5 9.Nb5 Kf7 10.c4 Nbc6 11.Nf3 Na5 12.cd5) 7...Nf5 (7...ef4 8.ef4 Nf5 9.Qh5 g6 10.Qf3 Be6 11.Bd3 Nd7 12.Ne2) 8.Qh5 g6 9.Qf3+= e4 10.Qf2 Bg7 11.Nc3 a6 12.Nd5; 6...Be6 7.Nc3 (7.Nf3 e4 8.Nh2 Bd6 9.d3 ed3 10.Bd3 Ne7 11.0-0 0-0 12.Nf3; 7.Be2 Nd7 8.Bh5 g6 9.Bg4 Bf7 10.Be2 Bd6 11.Nf3 Ne7 12.0-0) 7...Nd7 8.Be2 Bd6 9.Nf3 e4 10.Nh4 f5 11.Nd5 Qh4 12.Bg7; 6...Bd6 7.c4 (7.e4 de4 8.Nc3 f5 9.Bc4 a6 10.a4 Qg5 11.Kf1 Nf6 12.d3) 7...d4 8.Nf3 Qe7 9.d3 Nh6 10.ed4 cd4 11.Nbd2 0-0 12.Ne4; 6...a6 7.Qf3 (7.a4 ab5 8.Bb5 Bb5 9.ab5 Ra1 10.Ba1 Nd7 11.Nc3 d4 12.Ne4; 7.Nf3 Bd6 8.c4 d4 9.Bd3 Ne7 10.0-0 0-0 11.ed4 ed4 12.Qc2) 7...Ne7 8.Nc3 Be6 9.Nge2 ab5 10.Ng3 c4 11.Nb5 Na6 12.Be2; 6...Kf7 7.d4 cd4 8.ed4 Be6 9.de5 Nd7 10.Nf3 fe5 11.Be5 Ngf6 12.Bd3) 7.f4?? (7.Qh5 Ke7 8.Qd5 Qc7+–) 7...c4?? (7...Be6 8.Ne2+=) 8.a4?? (better is 8.Qh5 Ke7 9.Qd5+–) 8...b6?? (8...Be6 9.Ne2=) 9.Nc3 (9.Qh5 g6 10.Qd5 Bc6 11.Qd8 Kd8 12.bc6 Nc6 13.Bc4 Nb4+–) 9...Bb4?? (better is 9...Be6=) 10.Nd5 (10.Qh5 g6 11.Qd5 Bc3 12.Bc3+– (12.Qa8?! Bb2 13.Rd1 c3=; worse is 12.dc3 Bc6 13.Qd8 Kd8+–)) 10...Bc5 11.c3 (11.Bc4 Bf5+–) 11...Be6 (11...Bb5!? 12.ab5 Qd5+/–) 12.Bc4+– Bd5?? (better is 12...Kf7 13.d3 ed3 14.Qd3 Nh6+–) 13.Be2 (better is 13.Qh5 Kf8 14.Qd5 (14.Bd5?! g6+=) 14...Qd5 15.Bd5+–) 13...Ne7 14.Bh5 Kd7 (14...g6 15.c4 Bc4 16.Bf6–+) 15.Qc2 g6 16.Bg4 f5 17.Be2 Qg8?? (17...Rg8 18.c4 Bb7 19.Rd1–+) 18.Bf1?? (18.c4 g5 19.cd5 gf4 20.Kf1+/– (20.ef4?? Qg3 21.Kd1 Qg2 22.Bh8 Qh1–+; 20.Bh8 Qg2 21.Qb3 Qh1–/+)) 18...h5 (better is 18...Bb3 19.Qb1 Qe6–+) 19.c4+= Be6 20.Bh8 Qh8 21.Rb1 Kd8 22.d4 Bb4?? (better is 22...ed3 23.Qd3 Ke8=) 23.Rb4+– a6 24.Qd2 (24.ba6 Nc8+–) 24...ab5 25.ab5 (25.cb5?! Nd5+–) 25...Ra1 26.Kf2 Ke8 27.d5 Bf7 28.d6 (better is 28.Ne2 Qf6+–) 28...Nc8 29.d7! Nd7 30.Ne2 Ra3 31.Qc1 (31.Nd4 Qf6+–) 31...Ra2 32.Qb1 Rd2 33.Qc1 Rd3?? (better is 33...Ra2=) 34.Ra4 Nc5 35.Ra8 Ke7 36.g3 (36.Nd4 Rd4 37.ed4 Qd4 38.Qe3 Qe3 39.Ke3 Nd6+–) 36...Nb3 37.Qc2 Qd8 38.Nd4 (better is 38.Qb2 Qc7 39.Qe5 Qe5 40.fe5+–) 38...Rd2?? (38...Nd4 39.Qb2 Nc2 40.Qe5 Be6 41.Bd3 Qd3 42.Qc7 Kf6 43.Qe5 Kf7 44.Qc7 Ne7–+) 39.Qd2!+– Nd2 40.Nc6 (40.Nc6 Kd7 41.Nd8 Kd8 42.c5 bc5 43.Be2+–) 1–0. Pekin Dragons – Eries, ChessWorld.net, 2011.

5.h3 Nd7 A) 6.Nc3 Nb6 (6...d4 7.Nd5 Ne7 8.Ne7 Be7 9.e4 Nb6 10.Be2 Be6 11.Nf3 Nc4 12.Bc4) 7.e3 d4 8.Ne4 Na4 9.Bc1 de3 10.fe3 f5 11.Nf2 e4 12.Ne2; B) 6.e3 Bd6 (6...Nb6 7.a4 Bd6 8.a5 Nd7 9.c4 d4 10.Bd3 Ne7 11.Nf3 f5 12.Be2) 7.c4 d4 8.Bd3 Ne7 9.Nf3 f5 10.Ng5 Nf6 11.ed4 cd4 12.Be2; C) 6.e4 C1) 6...Ne7 7.a4 (7.Qh5 g6 8.Qf3 Bg7 9.ed5 Nb6 10.c4 Nf5 11.a4 e4 12.Qe4) 7...de4 8.Nc3 f5 9.Bc4 Nb6 10.Ba2 Qd6 11.Qh5 g6 12.Ne4; C2) 6...Nb6 7.ed5 Nd5 8.Nc3 Nge7 9.Bc4 Nc3 10.dc3 Qd1 11.Rd1 Bf5 12.Rd2.

5.h3 Be6 A) 6.Nc3 d4 (6...Nd7 7.e4 d4 8.Nd5 Nb6 9.Nb6 ab6 10.Be2 Ne7 11.a4 Kf7 12.Bg4; 6...Ne7 7.e3 Nd7 8.Nge2 Nf5 9.e4 de4 10.Ne4 Nb6 11.N2c3 Nd4 12.a4) 7.Ne4 f5 8.Ng3 f4 9.Ne4 Nf6 10.Ng5 Bd5 11.c4 Bc4 12.N1f3; B) 6.e3 Nd7 (6...Bd6 7.c4 d4 8.Bd3 Ne7 9.Nf3 0-0 10.0-0 Nd7 11.a4 Ng6 12.Be4) 7.Nc3 (7.Be2 Bd6 8.Nc3 Ne7 9.d3 f5 10.Nf3 d4 11.ed4 cd4 12.Na2; 7.Nf3 e4 8.Ng1 Bd6 9.d3 Be5 10.Be5 fe5 11.de4 de4 12.Nc3; 7.c4 dc4 8.a4 Ne7 9.Na3 Nb6 10.Nf3 c3 11.Bc3 e4 12.Nh2; 7.Ne2 Nb6 8.Ng3 Na4 9.Qc1 d4 10.Be2 Kf7 11.0-0 Ne7 12.c3) 7...Bd6 8.Nge2 Ne7 9.Ng3 0-0 10.Be2 e4 11.0-0 Qc7 12.Nh5.

5.h3 Ne7 A) 6.Nc3 Be6 7.e3 (7.a4 Kf7 8.d3 Nd7 9.Nf3 d4 10.Ne4 Nf5 11.Nfd2 Qa5 12.g4) 7...Nd7 8.Be2 Nf5 9.Bg4 Nb6 10.Nf3 Nc4 11.Bc1 h5 12.Bf5; B) 6.Nf3 e4 (6...Be6 7.Nh4 Nd7 8.Nc3 g5 9.Nf3 e4 10.Ng5 fg5 11.Ne4 de4 12.Bh8) 7.Nh2 (7.Nh4 g5 8.Bf6 Rg8 9.e3 gh4 10.Qh5 Rg6 11.Nc3 Be6 12.Bg5) 7...Be6 8.Nc3 Nd7 9.e3 Qc7 10.Be2 Ng6 11.d3 0-0-0 12.0-0; C) 6.e3 C1) 6...Kf7 7.Nc3 (7.Ne2 Be6 8.Nbc3 Nd7 9.Ng3 f5 10.Be2 Nb6 11.Qc1 d4 12.Nd1) 7...Be6 8.Nge2 f5 9.Ng3 Nd7 10.Be2 Nb6 11.d4 cd4 12.ed4; C2) 6...Nd7 7.Nc3 (7.a4 e4 8.d3 Ne5 9.de4 de4 10.Qd8 Kd8 11.Nc3 Bf5 12.0-0-0) 7...Kf7 8.Nge2 c4 9.Ng3 Nc5 10.e4 Be6 11.ed5 Nd5 12.Bc4; C3) 6...Be6 7.Nc3 Nd7 8.Nge2 Nf5 9.g4 Nh4 10.Ng3 e4 11.Be2 Ne5 12.Nh5.

5.h3 Kf7 A) 6.e4 A1) 6...Ne7 7.Nc3 (7.ed5 Nd5 8.Bc4 Be6 9.Qf3 Be7 10.Ne2 Qd7 11.Nbc3 Nc3 12.Be6) 7...Be6 8.ed5 Nd5 9.Bc4 Nf4 10.Be6 Ne6 11.Nf3 a6 12.a4; A2) 6...de4 7.Bc4 Be6 8.Qh5 g6 9.Qe2 Ne7 10.Be6 Ke6 11.Qe4 Qd5 12.Qg4; B) 6.Nc3 Be6 7.e3 (7.d3 Nd7 8.Nf3 Bd6 9.e3 Be7 10.Qd2 d4 11.Ne4 f5 12.Ng3; 7.h4 Nd7 8.e3 Nh6 9.Nh3 Nb6 10.a4 Nf5 11.a5 d4 12.ab6; 7.a4 Nd7 8.e3 Nh6 9.a5 Nf5 10.a6 b6 11.Nge2 Be7 12.Ng3; 7.e4 d4 8.Na4 Nd7 9.c3 Ne7 10.Nf3 Ng6 11.h4 h5 12.g3) 7...Nh6 8.Nf3 Nd7 9.Be2 e4 10.Nh2 f5 11.0-0 Bd6 12.d4; C) 6.e3 C1) 6...Be6 7.Ne2 (7.Nc3 Nh6 8.Nf3 Nd7 9.Be2 e4 10.Nh2 f5 11.0-0 Bd6 12.d4; 7.Nf3 Nd7 8.Nc3 Nh6 9.Be2 e4 10.Nh2 f5 11.0-0 Bd6 12.d4; 7.c4 Ne7 8.Nc3 Nd7 9.cd5 Nd5 10.Bd3 Be7 11.Qc2 Nc3 12.dc3) 7...Nd7 8.Ng3 f5 9.c4 dc4 10.Qc2 Nb6 11.Nf5 Ne7 12.Nh4; C2) 6...Nh6 7.e4 Be6 8.ed5 Bd5 9.Nc3 Nf5 10.Nf3 Be6 11.Bd3 a6 12.a4; C3) 6...Nd7 7.Nf3 (7.Nc3 Ne7 8.Nge2 c4 9.Ng3 Nc5 10.e4 Be6 11.ed5 Nd5 12.Bc4) 7...Ne7 8.Nh4 e4 9.f4 ef3 10.Qf3 g5 11.Qh5 Kg8 12.Nf3; C4) 6...Bd6 7.Nc3 (7.Nf3 Ne7 8.c4 h5 9.cd5 e4 10.Nh4 g5 11.Nc3 f5 12.d4) 7...Ne7 8.Nge2 Be6 9.Ng3 Nd7 10.Be2 f5 11.0-0 Nb6 12.Na2; C5) 6...Ne7 7.Nc3 (7.Ne2 Be6 8.Ng3 Nd7 9.Bd3 c4 10.Be2 a6 11.0-0 ab5 12.Nc3) 7...Be6 8.Nge2 Nd7 9.Ng3 f5 10.Be2 Nb6 11.d4 cd4 12.ed4.

6.Qc2 f5 7.e3 Nf6 8.Be2 Bd6 9.Nh3 +=.

6.d3 a6 7.ba6 Ra6 (7...Na6 8.e3 Ne7 9.Be2+=) 8.g3 (8.e4 Bd6 9.Nd2+=) 8...Bd7 (8...f5 9.Bg2+=) 9.Bg2 Ba4 10.Qc1 Nc6 11.Nh3 f5 12.e4 fe4 13.Be4 Nf6 14.Bg2 e4 15.de4 Qa5 16.Qd2 Qb6 17.0-0 (17.Bc1 Na5 18.Qf4 Nb3+=) 17...Ne5 (17...Na5!? 18.Rc1 Nb3–/+) 18.Bc1+= Nc4 19.Qg5 h6 20.Qg6. Chatterjee – Steuer, email 4AMM–F, 1998.

6.d3 Bd6 7.Nf3 Ne7 8.e3 a6 9.ba6 +=.

6.e3 b6?? 7.ed4 (better is 7.Qf3 Nc6 8.Qc6 Bd7 9.Qb7+–) 7...ed4= (7...cd4? 8.Qf3 e4 9.Qe4 Qe7 10.Qe7 Ne7 11.Nf3+–) 8.Qf3 (8.Qe2 Qe7=) 8...Qe7 9.Be2? (9.Ne2 Bb7 10.Qb3 a6=) 9...Bb7+= 10.Qh3? (better is 10.Qh5 g6 11.Qh3+=) 10...d3!–+ 11.Qd3 Theme: Deflection from g2 (11.Nc3 de2 12.Nge2–+) 11...Bg2 12.Nf3 (12.Nc3 Bh1 13.Nd5 Qd6–+) 12...Bh1 13.Qd5 Bf3 14.Qf3 Qc7 15.Qa8 (15.Qe4 Kd8 16.Qa8 Qh2 17.Qa7 Qh1 18.Bf1 Nd7=) 15...Bd6 16.Nc3 Ne7 17.0-0-0 (17.Bh5 Kd8+=) 17...0-0= 18.h4 (better is 18.Bd3!?=) 18...Nbc6 19.Nd5 (19.Qc6 Nc6) 19...Ra8 20.Nc7 Bc7 21.bc6 (21.Bf3 Re8 22.bc6 Nf5=) 21...Rc8 (21...Rd8 22.Bf3=) 22.Bf3 (22.Bg4 Rd8 23.Bd7 Ng6+=) 22...Bf4 23.Rg1 Kf7 (23...Kf8 24.Rg4 Be5 25.Be5 fe5 26.Rg5=) 24.Bd5+= Kf8 (24...Nd5 25.cd5 Rd8 26.Rg4–/+) 25.Rg4 Bd6 (25...Bh6!?=) 26.h5+= Rc7 27.h6 Ng6?? (27...Nf5 28.hg7 Rg7 29.Rg7 Kg7 30.Kc2+=) 28.hg7 (28.Rg6 hg6 29.h7+–) 28...Kg7+= 29.Re4 (29.Kc2 h5 30.Rg5 Be5 31.Be5 fe5+–) 29...Ne5 (29...Be5!?=) 30.Kc2+= a6 31.f4 White fights for the Initiative 31...Ng4 (31...Ng6 32.Re6 Bf4 33.Bf6 Kf8 34.Bd8+–) 32.Re6 Be7 33.Bf3 h5 34.d4 (better is 34.Kd3+/–) 34...Nh6?? (34...cd4 35.Bd4 Ba3 36.Bb6 Rc8+=) 35.Bh5+– Nf5 36.d5 b5 (36...Nd4 37.Bd4 cd4 38.d6 Bd6 39.Rd6+–) 37.Bg4 (37.Kd3 Nd4 38.Bd4 cd4 39.cb5 ab5+–) 37...Nd4 38.Bd4 cd4 39.Re7! (39.Re7 Re7 40.d6+/–) 1–0. Staffeldt,Sven – Brunner,Karg, NED–ch U20 Hengelo, 1994.

6.e3 de3!? 7.fe3 a6 =+.

6.e3 de3 7.fe3 Nh6 8.Nc3 a6 9.Nf3 =.

6.e4 de3 7.fe3 Nh6 8.Nc3 Bd6 9.Nf3 =.

5.bc5 Bc5+= 6.d4 Bb6 7.e3 Nc6 8.Bb5 Nge7 9.h3 (9.de5!? fe5 10.Qh5 Ng6 11.Nf3=) 9...0-0–/+ 10.Ne2 (10.Qh5 a6 11.Be2 Bf5–/+) 10...Be6 (10...a6 11.Bd3–/+) 11.0-0 Qc7 (11...Bc7 12.Qb3–/+) 12.Bd3 (12.Nd2 a6 13.Bd3 Ba5+=) 12...Rae8 (12...Rfc8 13.Qc2 e4 14.Bb5–/+) 13.Ng3 (13.Nd2 Bf5 14.e4 Bg6+=) 13...Bf7 (13...Ng6 14.Qh5–/+) 14.Nd2+= e4 (14...Rc8 15.Qg4+=) 15.Bc2 (15.Bb5 a6 16.Be2 Qd6=) 15...f5 16.Bc1 (16.Ne2 Be6+=) 16...Na5 (16...Ba5 17.Ne2–/+) 17.Bb2 (17.Ne2 Bh5+=) 17...f4–/+ 18.Ne2 (18.ef4 Qf4 19.c4 Bc7–/+) 18...fe3 19.fe3 Bh5 20.Rf8 (20.g4 Rf1 21.Kf1 Rf8 22.Kg2 Bf7–/+) 20...Rf8 21.Qe1 Nc4 (21...Nf5 22.Nc1 Qd6 23.c4+=) 22.Nc4 Qc4 23.Nf4 Bg6 (23...Bf7 24.Qf1 Qc6 25.Qe2–/+) 24.a4 (24.Qh4 Bd8–/+) 24...Rf7 (24...Bf5 25.Ba3 Bd8 26.Rb1+=) 25.Ra3 (25.Qe2 Qe2 26.Ne2 Nf5+=) 25...Bc7–/+ 26.Bb3 Qc6 27.Qh4 Bf4 (27...Nf5 28.Qg5 h6 29.Bd5 hg5 30.Bc6 Ne3 31.Bb7 gf4 32.Bc1–+) 28.ef4 e3 (28...Qd6 29.Bc1–/+) 29.Bd1 (29.Qe1 Qe6–/+) 29...Qb6 (better is 29...Qc7–/+) 30.Rb3? (better is 30.Bb3–/+) 30...e2!–+ 31.Qe1 (31.Be2 A deflection 31...Qb3) 31...ed1Q 32.Qd1 Qc7 33.Bc1 Be4 34.Qe2 (34.Qg4 Ng6–+) 34...Nf5 (better is 34...Nc6 35.Be3 Na5–+) 35.g4 (35.Qf2–+) 35...Nd4! 36.Qb2 (36.cd4 A pinning theme 36...Qc1) 36...Nb3 37.Qb3 Qc5 38.Kf1 a5 39.Ba3 (39.f5 Bd3 40.Kg2 Re7–+) 39...Bd3 40.Ke1 Qe3 41.Kd1 Qf4 42.Qd5 Qa4 43.Kd2–+ Threatening mate: Qd8 43...Bc4 44.Qd8 1–0. Borup,John – Richard,Peter, IECG, 2002.

5.d3 (---> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.d3 c5 5.c3).

5.d4 ed4 6.bc5= Qa5 7.Nd2 dc3 8.Nb3 Qc7 =.

5.e3 Be6 6.Be2 (6.d4 ed4 7.ed4 c4=) 6...Nd7 (6...Bd6 7.d4 c4 8.Nf3+=) 7.d4 cd4 (7...c4 8.de5 fe5 9.Nf3+=) 8.cd4= Bd6 9.de5 (9.Nc3 Rc8=) 9...fe5 10.Nf3 Ngf6 11.0-0 (11.Nc3 0-0=) 11...0-0 12.Bb5 (12.Nc3 Rc8=) 12...Bg4 (12...a5 13.Nbd2 ab4 14.ab4–/+) 13.Be2 (13.h3 Bf3 14.Qf3 a5+=) 13...Rc8= 14.Nbd2 (14.Nc3 e4 15.Nd4 Be2 16.Qe2 Qe8=) 14...Kh8 (14...Bf5 15.Rc1+=) 15.h3 Bh5 16.Rc1 (16.Qa4 e4 17.Nd4 Be2 18.Ne2 a6+=) 16...Qe7 17.Re1 (17.Rc3 Rc3 18.Bc3 Rc8+=) 17...Nb6 18.Rc8 Rc8 19.Nf1 Nc4 20.Ba1? Na3–+ 21.Ng3 Bf3 22.Bf3 Nc2 23.Re2 Na1 24.Qa1 e4 25.Bg4 Ng4 26.hg4 Bg3 27.fg3 Qg5 28.Qa7? Rc1 29.Kf2 Qf6 0–1. Queenwomen – kofti, ChessWorld.net, 2005.

5.ab4 Bb4 6.Nd5 Bc5 7.e3 a6 (7...d6 8.d4 Bb6 9.Bc4=) 8.d4+= Bd6 (8...ed4 9.Qh5 g6 10.Nf6 Nf6 11.Qc5 de3 12.Qe3 Kf7 13.Bc4 d5 14.Bf6 Qf6 15.Bd5 Kg7 16.Rd1=) 9.Nf3 (9.de5!? fe5 10.Be5 Be5 11.Qh5 Kf8 12.Qe5+/–) 9...ed4 (9...Nc6!?=) 10.Bd4 (worse is 10.ed4 Ne7 11.Ne3 Qc7+=) 10...b6?? (better is 10...Bc7+=) 11.Bb6+– Bb4 12.Nd2 (12.Nb4?! Qb6 13.Nd5 Qd6+/–) 12...Bc3 (12...Bb7 13.Bd8 (13.Nb4?! Qb6 14.Rb1 Qc5+=) 13...Bd5 14.Qg4 Bd2 15.Kd2+–) 13.Bd8 (13.Nc3?! Qb6 14.Nc4 Qc6+–) 13...Ba1 14.Qa1 Nc6 (14...Bb7 15.Nc7 Kd8 16.Na8+–) 15.Qa3 (15.Bf6!? Nf6 16.Nc7 Kd8 17.Na8 Bb7+–) 15...Kd8 (15...Rb8 16.Bc7 Rb7+–) 16.Qf8 1–0. Creatchy – IrishBouncer, ChessWorld.net, 2005.

5.ab4 Bb4 6.e4 Bc3 7.Bc3 1–0. Hasidume,Shuji (2205) – Secer,Ata, Afroasian ch–10 prel, 2007.

5.Nc3 Qb6 6.e3 Ne7 +=.

5.Nc3 Nc6 6.Na4 Bd6 (6...Qa5!? 7.Nc5 Qc5=) 7.e4+= Nge7 8.Bc4 Na5 (8...Qa5 9.Nc3 Qc5 10.d3+=) 9.Ba2+= b5 10.Nc3 Bc5 11.Qh5 (11.Nb5? Qb6 12.a4 Bf2 13.Kf1 Bg1 14.Rg1 a6 15.Qh5 g6–+) 11...g6 12.Qh4 Nc4 The isolani on a3 becomes a target 13.Nb5?? (better is 13.Rb1+=) 13...Nb2–/+ 14.Qf6 Rf8 15.Qe5 Bf2 (better is 15...Qb6 16.Qb2 Bf2 17.Ke2 a6–/+) 16.Ke2= Ba6 17.Qb2 Qb6 18.a4 Bh4 (18...Bd4 19.c3 Bc3 20.Qc3 Qf2 21.Kd3 Qg2 22.Qe5 Qh1 23.Bc4 Bb5 24.ab5–/+) 19.Nh3+/– Qc6 20.Ke3 Bf6 21.c3 (21.d4 Rc8 22.Kd3 Rb8+/–) 21...d5+= 22.Bd5 (22.Qb4!? Qb6 23.Ke2+/–) 22...Nd5= 23.ed5 Qd5 24.d4 (24.Nc7 Kd7 25.Nd5 Rae8 26.Kf2 Bc3 27.Kg3 Bb2–/+) 24...Kd7+= 25.Rhg1?? (better is 25.Rag1+=) 25...Rae8–+ 26.Kd2 (26.Kd3 Qf5 27.Kc4–+) 26...Bg5 27.Kd1 Qc4 28.Ng5 Rf1 29.Rf1 Qf1 30.Kc2 Re2 31.Kb3 Rb2 32.Kb2 Qg2 33.Ka3 (33.Kb3 Qg5 34.Kb4 Qd2–+) 33...Qg5 34.Rb1 Qe7 35.Rb4 (35.Kb3 Bb7 36.a5 Qe2–+) 35...g5 36.Na7 Qd6 37.Nb5 (37.h3 Qc7 38.Nb5 Bb5 39.Rb5 Qc3 40.Rb3 Qd4 41.Rb7 Kc6–+) 37...Qh2 38.Rb2 (38.d5 h5 39.Nd4 g4–+) 38...Qf4 39.Kb4 (39.Rb1–+) 39...g4 40.Ka5 (40.Rb1 g3 41.Rg1 Qf2–+) 40...Bb5 41.ab5 (41.Rb5 g3 42.Rb7 Kc8–+) 41...g3 42.b6 (42.Kb4 Qf1 43.c4 g2 44.Rg2 Qg2–+) 42...Qf8 43.Kb5 g2! 44.Rg2 Qf1 45.c4 Qg2 46.d5 h5 47.Kc5 h4 48.Kb5 h3 49.b7 Qb2 1–0. olsime (1955) – blake507 (1985), gameknot.com, 2014.

5.Nc3 Nc6 6.Na4 Be7 7.e4 d5 8.ed5 Qd5 =.

5.Nc3 d5 =.

5.Nc3 Bf2?? 6.Kf2+– Qe7 (6...d5 7.e3+–) 7.Ke1 Nh6 (7...d6 8.Nd5 Qd7 9.e4+–) 8.e3 (8.e4 d6+–) 8...Nc6 (8...d6 9.Nd5 Qd8 10.Qh5 Nf7 11.e4+–) 9.Bc4 d6 10.Nge2 (10.Nd5 Qd8+–) 10...Be6 11.Bd5 (11.Nd5 Qd7+–) 11...0-0 12.Ng3 Bd5 13.Nd5 Qf7 14.e4 f5 15.Rf1 Qg6 16.Qe2 f4 17.Nh5 Rac8 (17...Rf7 18.Qf3+–) 18.d3 (18.Ndf4 ef4 19.Bg7 Rfe8 20.Rf4 Nf7+–) 18...Ng4 19.h3 Nh2 20.Rg1 (better is 20.Rf2+–) 20...f3= 21.gf3? (21.Qf2 Qh5 22.g4 Qh3 23.Rh1+=) 21...Qg1–+ 22.Kd2 Nf3 23.Kc3 (23.Qf3 Qg5 24.Ndf4–+) 23...Qc5 24.Kb3 Nfd4 25.Bd4 Nd4 26.Ka2 (26.Kb2 Qc2 27.Qc2 Rc2 28.Kb1 Rf1) 26...Qc2 27.Qc2 Rc2 28.Kb1 Rf1 0–1. Farklempt – Zippy, ICS, 1994.

5.c4?? Qb6–+ (5...Qb6 6.e3 Qb2–+) 0–1. onny555 (1845) – ramon33 (1875), gameknot.com, 2012.

5.c4?? Nc6 6.d3?? Qb6 7.e3 Qb2 8.Nd2 –+.

5.c4?? Nc6 6.d3?? Bd4 7.Nc3?? Qa5?? 8.Qc2 Bc3 9.Bc3 Nd4 10.Qb2+/– Qb6 11.Qb6 ab6 12.Kd2?? Nb3–+ 13.Kc2 Na1 14.Ba1 Ne7 15.Bb2 Nf5 16.e3 0-0 17.g4 Nd6 18.Ne2 b5 19.c5 Nf7 20.Bg2 d6 21.c6 bc6 22.Bc6 Rb8 23.Bd5 Bb7 24.Bb7 Rb7 25.Nc3 Rc8 26.Kb3 Nd8 27.Nd5 Ne6 28.Nb4 Nc5 29.Kc3? Na6 30.Kb3 Nb4 31.Kb4 Rc2 32.Rb1 Rf2 33.d4 Rh2 34.Bc3 Re2 35.de5 de5 36.Rd1 Re3 37.Rd8 Kf7 38.Bd2 Re4 39.Ka5 Rg4 40.Bb4 h5 41.Ka6 Rc7 42.Kb5 Rgc4 43.Rf8 Kg6 44.Rh8 Rc2 45.Re8 Rb7 46.Ka6 Rd7 47.Kb5 Rd5 48.Ka4 h4 49.Rh8 Kg5 50.Kb3 Rg2 51.Kc4 Rd4 52.Kc3 Rg3 53.Kc2 Re4 54.Bc5 Re2 55.Kd1 Ra2 56.Ke1 Rb3 57.Bd4 Rb1 0–1. dtpwaldi – adasko64, internet, 2011.

5.c4?? Nc6 6.e3 Nge7 7.Nf3 d5 8.cd5 Nd5 9.d4 Qa5 (9...ed4 10.Bd4 Nd4 11.Nd4 Qa5 12.Nd2 Bd4 13.ed4+=) 10.Nbd2 (10.Qd2 Qd2 11.Nbd2 ed4=) 10...ed4 11.ed4 Be7 (11...Bd6 12.Bc4 Be6 13.Qb3=) 12.Be2 (12.Bc4 Be6=) 12...0-0 (12...Be6 13.0-0=) 13.0-0 Bf5 (13...Be6 14.Re1=) 14.Nb3 (14.Qb3 Nd8=) 14...Qb6= 15.Bc4 Be6 (15...Rad8 16.Re1 Bg6 17.Nh4+=) 16.Re1+= Bf7 17.Qd2 (17.Nh4 Nf4 18.Bf7 Rf7+=) 17...Bd6 18.g3 (18.Qc2 Rac8=) 18...Nc7 (18...Rac8 19.Rad1+=) 19.Bf7 (19.d5 Rae8=) 19...Rf7 20.d5 (20.Qd3 Rd8=) 20...Ne5 (20...Ne7 21.Qd3–/+) 21.Ne5 fe5 22.Rab1? (better is 22.Qe3 Qb5 23.Red1+=) 22...Qb3–+ 23.Be5 Qa3 24.Rb7 Be5 25.Re5 Qd6 (25...Rd8 26.Qd4–+) 26.Rg5 (26.f4 Rd7–+) 26...a5 27.Qb2 a4 28.f4 (28.Rb8 Rb8 29.Qb8 Rf8–+) 28...a3 29.Qa2 h6 30.Re5 Re8 (better is 30...g5 31.Qb3 a2 32.Rb8 Rf8 33.Ra8 Ra8–+ (33...Na8?! 34.Qa2 Nc7 35.Qg2–+)) 31.Rc7 Re5 32.Rf7?? (32.Rc8 Kh7 33.fe5 Qe5 34.Qb1 Rf5 35.Rc1–+) 32...Kf7 (better is 32...Re1 33.Kf2 Qc5 (33...Kf7 34.Ke1 g5 35.Qb3+=) 34.Kf3 Qe3 35.Kg4 Kf7–+) 33.fe5+= Qb6 34.Kf1 Qb5 35.Kg1 Qb2 36.e6 (36.Qc4 Qe5 37.d6 Kf6 38.Qh4 Kg6 39.Qg4 Kh7=) 36...Ke7 (36...Kg8!? 37.e7 Kf7+=) 37.Qc4= Qb1 (better is 37...a2 38.Qc7 Kf6 39.Qf7 Kg5 40.Qf4 Kg6 41.Qe4 Kf6 42.Qf4 Kg6 43.Qe4 Kf6 44.Qf4 Kg6=) 38.Kg2+– a2 39.Qc7 Kf6 40.Qf7 Kg5?? (better is 40...Ke5 41.e7 Qc2 42.Kh3 Qf5 43.Qf5 Kf5+–) 41.h4 Kg4 42.Qf3 1–0. phildo (1840) – owater, net–chess.com, 2004.

5.d4 Qb6+= 6.dc5 Qb2 7.Nd2 Ne7 (7...Na6 8.e4 Nc5 9.Bc4+=) 8.e3 (8.Ne4 f5 9.Nd6 Kf8=) 8...Qc3 9.Bc4 Na6 10.Ne2 Qa5 11.Ba6 Qa6 12.Ne4 Qa5 (12...0-0 13.Qd6 Qc6 14.N2c3+=) 13.Qd2+= Qd2 14.Kd2 0-0 (14...Kf7 15.N2c3+=) 15.Rhb1 (15.Nd6 f5+/–) 15...b6 (15...Nf5 16.N2c3+=) 16.cb6 ab6 17.Nd6 (17.Rb6 d5 18.Nd6 Bg4+/–) 17...Ba6 (17...Rb8 18.c4 Ba6 19.Ng3+/–) 18.Rb6 Nc8 (18...Rfb8 19.Rb8 Rb8 20.a4+/–) 19.Nc8 Rfc8 20.Nc3 Kf8 (20...Bc4 21.a4+/–) 21.a4+– Rc5 22.e4 (22.Ne4 Rd5 23.Kc3 Rc8 24.Kb3 Bc4 25.Kb2 Rc6 26.Rc6 dc6+–) 22...Rac8 (22...Bc4 23.Rab1+/–) 23.Ra6 (23.Ra3 Bf1+/–) 23...Rc3 24.Ra2 R3c4 25.f3 (25.f3 Rd4 26.Kc1+/–) 1–0. Vetter,Udo – Valica,Slavo, TT–16 ETC, 2005.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 Nc6 8.Qd2 Nge7 9.c4 (9.e3 d5=) 9...d6 (9...d5 10.cd5 Qd5 11.Qd5 Nd5 12.e4=) 10.Nc3 (10.e3 Na5 11.Qc2 Bf5=) 10...Ne5 (10...Na5 11.Qc2+=) 11.e4 0-0. philtil (2015) – oraz (1850), net–chess.com, 2004.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 Nc6 8.Qe3 (8.Qg4 Qe7=) 8...Nge7+= 9.Nf3 0-0 10.g3 (10.Qb3 d5=) 10...d5+= 11.Bg2 Nf5 (11...Bf5 12.Qd2+=) 12.Qb3= Be6 13.Nc3 Exerts pressure on the isolated pawn (13.Qb7 Rc8=) 13...Re8 14.Qb7 (14.0-0-0 d4 15.Qb7+=) 14...Rc8 (14...Qa5 15.Kd2 (15.Qc6?? Rac8 16.Qe8 Re8–+) 15...Nd6 16.Qc6–/+) 15.0-0 (15.Qa6 d4 16.Nd1 Qc7=) 15...Na5 (better is 15...Qa5 16.Nd1 Ncd4 17.Nd4 Nd4–/+) 16.Qa7? (better is 16.Qb2+=) 16...Rc3–+ 17.Rfd1 Qa8 (17...Nc6 18.Qa4–+) 18.Qb6? (better is 18.Qa8 Ra8 19.Ne1–/+) 18...Rc2 19.g4 (19.e3 Rc6 20.Qb1 Rb8–+) 19...Nc4 20.Qb3 Rb2 21.Qd3 Ne7 22.Nd4 (22.h3 Nc6–+) 22...Bg4 23.h3 Bd7 24.e4 Ne5 (24...Rb6!? 25.Re1 Ne5 26.Qd2–+) 25.Qc3 Reb8 26.ed5 Nd5?? (better is 26...N7g6–+) 27.Ne2?? (better is 27.Qc5 Kh8 28.Bd5+=) 27...Nc3–+ 28.Ba8 Ne2 29.Kf1 Ra8 30.f4 Ng3 31.Kg1 Nf3 0–1. wlittle (2165) – parquexpo (1960), net–chess.com, 2004.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 d5 8.Nc3 Ne7 9.Nf3 Nbc6 10.Qd2 Be6 11.e3 0-0 12.Bd3 Rc8 13.Nd4 (13.Rb1 Qd7=) 13...Bf7 (13...Nd4 14.ed4 Bf5 15.Rb1=) 14.0-0 Qc7 15.Nf5 (15.Ncb5 Qd7+=) 15...Rfd8 16.Nb5 Qb8 ½–½. alaamattar (2105) – wilierescapes (2000), net–chess.com, 2005.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 d6 =.

5.e3 d5 (--> 3.a3 d5 4.e3 c5 5.bc5 Bc5).

5.e3 e4?? 6.Qh5+– g6 7.Qc5 1–0. Wall,Bill – Syd, internet, 2002.

5.e4 Nc6 6.Nf3 Qb6 7.Bc3 Bf2 8.Ke2 Bc5 9.d3 d6 10.Nbd2 Bg4 11.Rb1 Qc7 12.Nb3 Ba3 13.Qd2 Bc5 14.Nc5 dc5 15.Ke1 Nd4 16.Nd4 ed4 17.Ba1 Ne7 18.h3 Bh5 19.Qf2 Qa5 20.Qd2 Qd2 21.Kd2 b6 22.g4 Bf7 23.Bg2 Rd8 24.Rhf1 h6 25.c3 Nc6 26.h4 Ne5 27.Bh3 Be6 28.Rf4 Ng6 29.Rff1 dc3 30.Kc3 Nh4 31.Rbd1 Ng6 32.Rf2 Ne5 33.Rg1 Rd3 34.Kc2 Rh3 35.Be5 fe5 36.g5 hg5 37.Rg5 Rh2 38.Rd2 Rd2 39.Kd2 Kf7 40.Kc2 Kf6 41.Rg1 g5 0–1. pittol – gena2013 (1605), gameknot.com, 2014.

5.Nf3? Qb6–+ 6.e3? (better is 6.Qc1 Bf2 7.Kd1–+) 6...Qb2 7.Nc3 Ba3?? (7...Qb6 8.Na4 Qc6 9.Nc5 Qc5 10.c4–+) 8.Be2?? (better is 8.Rb1!? Qb1 9.Qb1+/–) 8...Qb4?? (8...Be7 9.Nd5 Kd8–/+) 9.Nb5= Nc6 (9...Bb2 10.Nc7 Kd8 11.Na8 Ba1 12.Qa1+=) 10.Ra3 (better is 10.Nc7!? Kd8 11.Na8+/–) 10...Kd8= 11.Rb3 Qa4 (11...Qe7!?+=) 12.Nd6+= Nh6 13.0-0 g5 14.Nb7 Bb7 15.Rb7 Nb4? (15...g4 16.Ne1+/–) 16.c3?? (better is 16.Bb5 Qa2 17.Rd7 Kc8 18.c3+–) 16...Qd1+= 17.Rd1 Nd5 18.Bb5 (18.Ra1 g4 19.Ne1 a5+/–) 18...Nb6 (better is 18...Nc7!? 19.Rb1 Nf5=) 19.c4 Rc8? (19...Ke7 20.Ra1 g4 21.Nh4+/–) 20.d3?? (better is 20.Ra1!? Ke7 21.Raa7 Ra8+–) 20...Ke7? (better is 20...Rc7!? 21.Rc7 Kc7+=) 21.Ra7 Ke6?? (21...Ra8 22.Rda1 Ra7 23.Ra7+/–) 22.Rb7 (better is 22.Ra6+–) 22...Na8?? (better is 22...Rb8 23.Rb8 Rb8+/–) 23.Bd7 (23.Bd7 Kd6 24.Bc8 Rc8 25.Ra1+–) 1–0. Fournier,Frederic (1905) – cobero24 (1785), Active, 2005.

6.Qc1 Ne7 7.c4 Nbc6 8.Nc3 0-0 9.Na4 Qa5 10.Nc5 Qc5 11.Nf3 Nf5 12.d3 d5 (better is 12...b6=) 13.cd5+– Qc1 14.Rc1 Nce7 15.e4 Nd6 16.Be2 Ng6 17.g3 Bh3 18.Kd2 Rf7 19.Rc5 b6 20.Rc6 Rd7 21.Rhc1 Ne7 22.Rc7 Rad8 23.Ne1 a5 24.f3 b5 25.g4 (25.R7c5 Ng6+–) 25...Nc4 26.dc4 Rc7 27.cb5 Rcd7 28.Nd3 Nd5 29.ed5 Rd5 30.a4 h5 31.Ke3 hg4 32.fg4?? (better is 32.Nf2 R5d7 33.Bc4 Kf8 34.fg4+–) 32...Bg4+/– 33.Rc5 Rc5 34.Nc5 (worse is 34.Bg4 Rc2 35.Be6 Kh7–/+) 34...Be2 35.Ke2 Kf7 36.b6 Rh8 (better is 36...Rb8 37.b7 Ke7+–) 37.Nd3?? (37.Bc3 Rh2 38.Kd3 Rh3 39.Kc4 Rh4 40.Kb5+–) 37...Rb8+= (worse is 37...Rh2 38.Kf1 Rh1 39.Kg2+=) 38.Bc3 Rb6 39.Ba5 Ra6 40.Bd2 Ra4 41.Nf2 g6 42.h3 Ke6 43.Be3 f5 Black intends e4 44.Bd2 e4 (44...f4 45.h4–+) 45.Be3 (better is 45.h4!?–/+) 45...Ra2 46.Bd2 Ke5 47.Nd1 f4 48.Ke1 f3 (48...e3 49.Ne3 fe3 50.Be3–+) 49.Nf2? (49.Be3–+) 49...Ra1 50.Nd1 f2! 51.Kf2 Rd1 52.Bc3 Kf4 0–1. cushing – Zippy, ICS game, 1994.

6.Bc3 Nc6 7.Bc4 Nge7 8.Bb3 d5 9.Qh5 g6 10.Qf3 d4 11.ed4 ed4 12.Bb4 (12.Qf6? Rf8 13.Ba5 Qa5–+) 12...Nb4 13.ab4 Bb4 14.Ba4 Bd7 15.Bd7 Kd7 16.Ne2 Rac8 17.Qb3 Qc5 (17...Bc5 18.Qa4 Nc6 19.0-0–/+) 18.Ra2 (better is 18.c3 dc3 19.dc3+=) 18...Rhe8 19.0-0 Nc6 20.Nc1 Qd6 21.Qh3 f5 22.Qh7 Re7 23.Qh3 Qf6 24.Nd3 Rh8 25.Qf3 Bd6 The mate threat is Bxh2 26.g3 Rh3 27.Ra7?? (better is 27.Rb2 Kc8 28.Re1+=) 27...Kc8 (better is 27...Na7 28.Qb7 Ke8–+) 28.Ra8+/– Nb8 (28...Nb8 29.Qd5 Rh8+–). Bornarel,Gilbert – Vancheri,Philippe, corr Midi Pyrenees–ch, 1999.

6.Bc3 Nc6 7.Bc4 Nge7 8.Qh5 g6 =.

6.Bc3 Nc6 7.Nf3 e4 (7...d5 8.d4 ed4 9.Nd4=) 8.Nh4+= White fights for the Initiative 8...Nh6 (8...Nce7 9.d4 ed3 10.Bd3+=) 9.Qh5+/– Kf8 (9...Nf7 10.Bc4 Ncd8 11.Bd5+/–) 10.Bf6 d6 (10...gf6 A deflection 11.Qh6) 11.Nc3 (better is 11.Bc4 Qc7 12.Bd5+–) 11...Ng4?? (11...Qb2 12.Rb1 Qc2+/–) 12.Ng6!+– Kg8 (12...hg6 A pinning theme 13.Qh8) 13.Bc4 1–0. Ivanets,Vladimir (2260) – Lein,Marina (2015), VII Camp. europeo senior, 2007.

6.Bc3 d5 7.d4 ed4 8.ed4 Qe6 9.Be2 =.

6.Nc3 Qa5 7.Bc4 (7.Nd5 Kd8 8.a4 Bb4 9.Nb4 Qb4 10.Ba3+=) 7...Nc6 8.Bg8 Rg8 9.Qh5 Kf8 (9...Kd8 10.Qh7+=) 10.Qh7 Ne7 11.Nf3 d5 12.Qh5 Bf5 13.Nd5! Be6 (13...Nd5 14.Qf5) 14.Nc3 Rd8 15.0-0 b5 16.d4! g6?? (16...ed4 17.Qc5) 17.Qh4 (17.Qh4 ed4 18.ed4+–) 1–0. themonkey (2110) – NN, GameColony.com, 2002.

6.Nc3 Qb2? 7.Na4+– Qa1 8.Qa1 Be7 9.Bc4 Nc6 10.Nf3 Nh6 11.Nc3 Nf5 12.Nd5 Bd6 13.d4 ed4 14.ed4 Na5 15.Bd3 Ne7 16.Ne7 Be7 17.0-0 0-0?? (better is 17...b6+–) 18.Qa2 Kh8 19.Qd5 Nc6 20.Qh5 g6 (20...h6 21.Qf5 Kg8 22.Qh7 Kf7 23.Bg6 Ke6 24.Re1 Kd6 25.Qg7 Rd8 26.Re7 Ne7 27.Qf6 Kc7 28.Qe7 b6+–) 21.Bg6 Rf7 22.Bf7 Kg7 23.Bd5 d6 24.Qf7 Kh6 25.Be4 (better is 25.Bc6!? bc6 26.Qe7 Bf5 27.Qf6 Bg6 28.Qd6 Rc8+–) 25...Bg4 26.Qh7 1–0. b4_player (1915) – qdong (1650), GameColony.com, 2002.

6.Nc3 Qb2? 7.Na4 Qa3 8.Ra3 Ba3 9.Qa1+– b5 10.Nc3 +–.

6.Nc3 Ne7 7.Bb5 (7.f4 0-0 8.Bc4 Kh8 9.Na4 Qc6 10.Nc5=; 7.Na4 Qc6 8.Nc5 Qc5 9.Qh5 g6 10.Qh4=; 7.Be2 d5 8.Na4 Qc7 9.Nc5 Qc5 10.d4=; 7.Nf3 d5 8.Na4 Qa5 9.Nc5 Qc5 10.d4+=) 7...a6 8.Ba4 0-0 9.Bb3 Kh8 10.Nf3 +=.

6.Nc3 d5 7.Nf3=.

6.Nc3 Nge7 7.d3 (better 7.Ne4!? d6 8.Qh5 Ng6 9.Bd3=) 7...d5=+ 8.Nf3 0-0 9.Be2 Qb6 10.Rb1 d4 (10...a6 11.0-0 Bd6 12.Na4=+) 11.Ne4 Qa5 Attacking the isolated pawn on a3 (11...Ba3 12.Ba3 Qa5 13.Nfd2+-) 12.Qd2 Qd2 13.Nfd2 (worse 13.Ned2 de3 14.fe3 Be3-/+) 13...Bb6 14.Nc4 de3 15.fe3 Bc7 16.Bc3 Nd5 17.Bd2 f5 (17...Rd8 18.Bf3=) 18.Ned6+= b6 19.0-0 (19.Bf3!? Be6 20.Nb5=) 19...Be6= 20.Nb5 Rad8 21.Nc7 (21.e4 Nde7 22.Ne3 Bd6 23.ef5 Nf5 24.Nf5 Rf5 25.Rf5 Bf5 26.Nd6 Rd6=) 21...Nc7 22.Bf3? (better 22.Nb2=) 22...e4!-+ 23.Be4 (23.de4 Bc4 Deflection) 23...fe4 24.Rf8 Kf8 25.Rf1 Kg8 26.Nb2 Nb5 27.Ra1 Ne5 28.d4 (28.a4 Nd6 29.Bb4 Nf5-+) 28...Nc4 (better 28...Rc8!? 29.c3 Nd3 30.Nd1-+) 29.Nc4 Bc4 30.a4 Nc7 31.a5 Rf8 (31...b5 32.Rb1-+) 32.ab6 ab6 33.h3 (33.h4 Nd5-+) 33...Nd5 34.Rb1 b5 35.Ba5 (35.Ra1 b4-+) 35...b4 (better 35...Ne3 36.Re1 Nc2 37.Re4-+) 36.Re1 (36.h4-+) 36...Ra8 37.Bb4 Nb4 38.Kh2 (38.c3 Nd5-+) 38...Nc2 39.Rc1 Ne3 40.Rc3 (40.h4 Rd8 41.Re1 Ng4 42.Kg3 Nf6-+) 40...Nf1 41.Kg1 Ra1 42.Kf2 e3 43.Re3 Ne3 (better 43...Ra2 44.Kf3 Bd5 45.Kf4 g5 46.Kg5 Rg2 47.Kf4 Rf2 48.Ke5 Ne3 49.Kd6-+) 44.Ke3 Kf7 (44...Bd5 45.Kf4-+) 45.g3 Ke6 46.h4 Bd5 47.g4 h6 48.Kf4 (48.Kf2-+) 48...Ra3 49.g5 h5 50.g6 Kd6 (50...Rf3 51.Kg5 Rf5) 51.Kg5 Rg3 52.Kf4 (52.Kf5 Rf3 53.Kg5 Be6 54.Kh5 Bh3 55.Kg5 Rf5) 52...Rf3 53.Kg5 Rf8 (53...Be6 54.Kh5 Bh3 55.Kg5 Rf5) 54.Kh5-+ Ke6 (54...Rf4 55.Kg5 Rd4 56.h5 Ke6 57.h6 gh6 58.Kh5 Kf6 59.g7 Bf3 60.Kh6 Rh4) 55.Kg4 Bf3 56.Kg3 Kd5 (56...Kd5 57.h5 Bh5 58.Kh4 Bg6 59.Kh3 Rf3 60.Kh2 Be4 61.Kg1 Kd4 62.Kg2 Ke3 63.Kh1 Rh3 64.Kg1 Rh1) 0-1. Williams,Barry - Verharaniam,Prince, NZL Wanganui Chess Club, 1999.

6.d4 Qb6 7.dc5 Qb2 8.Nd2 =.

6.d4 ed4?? 7.ed4?? (better is 7.Qh5 Ke7 8.Qc5 d6 9.Qd5 de3 10.Qe4 Be6 11.Qe3+–) 7...Qe7 8.Be2 Bd6 9.Nf3 Nh6 10.0-0 Nf5? 11.Re1?? 0-0?? 12.Bc4+– Kh8 13.Re7 Nce7 14.c3 Nc6 15.Nbd2 Bf4 16.Ne4 a6 17.Bd3 b5 18.Nc5 Nd6 19.Bc1 Bc1 20.Rc1 Nb7 21.Ne4 d5 22.Ng3 Bg4 23.h3 Bh5 24.Nh5 g6 25.Nf4 g5 26.Nd5 Nd4 27.Nd4 (27.Nd4 Ra7 28.Bh7+–) 1–0. amator111 (1660) – janusz3265, internet, 2011.

6.Nf3 Qb6 7.Nc3+= Qb2 (7...Nge7!?+=) 8.Na4+/– Qa3 9.Ra3 Ba3 10.Nc3 Bd6 11.Nh4 (11.Bc4 Nge7+/–) 11...g6 (11...Nge7 12.Qh5 g6 13.Qh6+/–) 12.Bc4 f5 13.Nf5! gf5 14.Qh5 Kd8 15.Qg5 Be7? (15...Nce7+–) 16.Qg7 Nf6 17.Qh8 Kc7 18.Nd5 Nd5 19.Bd5 Bb4 (19...Kd6 20.Bb3+–) 20.Bc6 Kc6 21.c3 Bd6 (21...Ba3 22.Qe5 d5 23.Qe8 Kc7 24.Qf7 Bd7 25.Qd5+–) 22.Qh7 f4 23.Qe4 Kb6 24.ef4 ef4 25.Qc4 Bc5 26.0-0 d5 (26...d6 27.d4+–) 27.Qd5 Be7 28.Re1 f3 (28...Ba3 29.Qb3 Kc6 30.Qa3+–) 29.Re7 1–0. mrkt (2295) – blik (2385), ICC, 2003.

6.Nf3 Bb6 7.d4 (7.c4 Nge7 8.d4 Ba5 9.Nc3 d5 10.Rc1=) 7...Ba5 8.Bc3 e4 9.Nh4 Bc3 10.Nc3 =.

6.Nf3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c5 5.bc5 Bc5 6.Nf3 Nc6).

6.Nf3 Be7 7.c4 (7.e4 d5 8.ed5 Qd5 9.Nc3 Qc5 10.Bb5=) 7...d5 8.cd5 Qd5 9.Nc3 Qa5 10.Qb3 +=.

6.Nf3 Nge7 7.d4+= ed4 8.ed4 Bb6 (8...Bd6 9.Bd3+=) 9.d5 Nb8 (9...Ba5 10.c3 Qb6 11.Bc1+= (worse is 11.dc6 Qb2 12.cd7 Bd7–/+)) 10.d6+/– Nf5 (better is 10...Ng6!?+/–) 11.Qd5+– g6? (better is 11...Nh6+–) 12.Bc4 (12.Bc4 Nd6 13.Qd6 Qe7 14.Qe7 Ke7 15.Nc3+–) 1–0. b4_player (2250) – ceskysachista (2135), GameColony.com, 2003.

6.Nf3 Bf8 7.c4 (7.d4 e4 8.Nfd2 d5 9.c4 dc4 10.Ne4+=) 7...d5 8.cd5 Qd5 9.d4 Bg4 10.Nc3 +=.

6.c4 Nbc6 7.Nf3 Qb6 8.Qc2 (8.Nc3 d6+=) 8...d6 (8...d5 9.Nc3 Bf5 10.Qc1=+) 9.Nc3= Bd7 10.d3 Qa5 11.Nd2 a6 12.Be2 0-0 13.0-0 Rad8 14.Bf3 Be6 15.Nb3 Qc7 16.Na4 (16.Nd5 Qd7+=) 16...Ba7= 17.d4 (better 17.Rab1!?=) 17...ed4=+ 18.ed4 b5 19.cb5 ab5 20.Bc6?? (20.Nc3 Nd4 (20...Bd4? 21.Nb5 Bf2 22.Rf2+-) 21.Nd4 Bd4=+) 20...Qc6?? (better 20...ba4 21.Na5 Qa5 22.Ba4 Rb8-+) 21.Nc3=+ Rc8 22.Rfe1 Bf5 (better 22...Qd7!?=+) 23.Qe2+/- The isolani on b5 becomes a target 23...Nd5 24.Qb5 (24.Nb5 Nf4 25.Qf1 Bd3 26.Na7 Qd5 27.Nc8 Rc8-+) 24...Nc3 (24...Nf4!? 25.Qc6 Rc6+=) 25.Qf5+- Na4 26.Re7 Nb2 27.Qe6 (27.Ra7 Rfe8 28.h3 Rc7+-) 27...Kh8 28.Re1?? (better 28.Ra7 Rfe8 29.Re7+=) 28...Nd3-+ 29.Qg4 (29.Ra7?? Ne1 30.d5 Qc2-+) 29...Rg8 30.Rd1 Qc2 31.Qf3 Qb3 (31...Rc3 32.Re3 Ne5 33.Qe2 Qb3 34.Rc3 Qc3 35.de5 fe5 36.Qd2-+) 32.Re3 (32.Ra7 Rc3 33.Qe2 d5-+) 32...Qd1! 33.Qd1 Rc1 34.Rd3 Rd1 35.Rd1 Rc8 36.g4 (36.Kf1 Rc3-+) 36…Kg8 0-1. Williams,Barry - Verharaniam,Prince, NZL Wanganui Chess Club Summer Handicap, 2000.

6.d4 Qb6 7.dc5 (7.Bc3 ed4 8.ed4 Qe6 9.Be2 Bb6+=) 7...Qb2 8.Nd2 Qc3 9.Bc4 Nbc6 10.Kf1 (10.Ne2!? Qa5 11.0-0+=) 10...b5= 11.cb6 d5 (11...ab6 12.Ne2 Qa5 13.Kg1=) 12.Ne2+= Qa5 13.Nb3 Qb6 14.Bd5 Ba6 15.Ke1 (15.Bf3 Rd8 16.Qe1 Bc4+=) 15...Rd8 16.Nc3 Bc4 (16...Qc7 17.Qd2=) 17.e4 (17.Bc6 Qc6 18.Qf3 Qc7=) 17...Nd5 (17...Na5 18.Qh5 g6 19.Qf3+=) 18.Nd5 Bd5 19.ed5 Qb5 20.Qg4 Qd5 21.Rd1 (21.Qg7? Qe4 22.Kf1 Qc2–+) 21...Qd1 22.Qd1 Rd1 23.Kd1 Ke7 24.Kc1 Rd8 25.Re1 (25.Rd1 Rd1 26.Kd1 g5=) 25...Nd4 (25...g5 26.Rd1=) 26.f4 (26.Nd4 Rd4 27.c3 Rg4=) 26...Ke6 (26...Nb3 27.cb3 Ke6 28.Kc2+=) 27.Nd4 (27.Re3 h5+=) 27...Rd4 Black gets the initiative 28.fe5 fe5 29.c3 Rf4 30.Re2 e4 (30...g5 31.Kb2+=) 31.Kd1 Rf1 32.Re1 Re1 33.Ke1 Kd5 34.Kd2 a5 35.h3 a4 36.h4 Kc4 37.h5 Kb3 (37...Kb3 38.c4 Kc4–+) 0–1. Lorenz Tristan,Manuel – Bernabe Pajares,Manuel, corr ESP–Cup, 1985.

6.d4 ed4 7.ed4?? Bd6 8.Bd3 0-0 9.Nf3 Ng6 10.Bg6 hg6 11.0-0 Re8 12.c4 Qc7 13.Nbd2 Bf4 14.Rc1 d6 15.Qc2 Bf5 16.Qc3 Bg4 17.Rce1 Re1 18.Re1 Bf3 19.Nf3 Nd7 20.g3 Bh6 21.Nh4 g5 22.Nf5+– Rf8 23.Qd3 Qd8 24.Nh6 gh6 25.Qg6 Kh8 26.Qh6 Kg8 27.Qg6 Kh8 28.Re4 Nb6 29.d5 Qd7 30.Qg5 Rg8 31.Rh4 Qh7 32.Bf6 Rg7 33.Qg7 1–0. amator111 (1680) – horse20, internet, 2011.

6.d4 ed4 7.Qh5 Ng6 8.Qc5 de3 9.fe3 d6 10.Qd5 Nc6 11.Kf2 (11.Nd2 Qa5 12.Qa5 Na5+–) 11...Nge7 12.Qh5 Ng6 13.Bc4 (13.Bd3 0-0+–) 13...Qe7 14.Nf3 Be6 15.Bd3 0-0 (15...Bf7 16.Nbd2+–) 16.Nh4 Bf7 17.Ng6 hg6 18.Bg6 Ne5 (18...Bg6 19.Qg6 Qe6+–) 19.Qh7# 1–0. Fritz 10 – NN, internet, 2007.

6.Ne2 d5+= 7.g3 Nbc6 8.Bg2 Be6 9.0-0 0-0 10.Nbc3 a6 11.f4 e4 12.Na4 Bd6 13.Nd4 Nd4 14.Bd4 b5 15.Nc5 Bf7 16.Bh3 f5 17.Nb7 Qc7 18.Nd6 Qd6 19.Bc3 Qb6 20.Qb1 Rac8 21.Bb4 Rc7 22.Qb2 Bg6 23.a4 Rfc8 (23...ba4!? 24.Qe5 Qc6+=) 24.Qe5+/– Nc6 25.Qd5 Kh8 26.Bc5 Qb7 27.ab5 ab5? (better is 27...Qb5!? 28.c4 Nb4 29.cb5 Nd5+–) 28.Bf5+– Rd8 (28...Bf5 29.Qf5 Na5 30.Bd4+– (30.Ra5?! Rc5 31.Qe6 Rc2+/–)) 29.Qe4 Bf5 30.Qf5 Rf7 31.Qe4 h6 32.d4 Qd7 33.Rfb1 Re8 34.Qd3 b4 35.d5 Ne7 36.e4 (worse is 36.Bb4 Nd5 37.Rd1 Nb6+–) 36...Nd5 (36...Kg8 37.Ra7 Qc8 38.Qc4+–) 37.ed5 1–0. pierred (2755) – alaamattar (2295), net–chess.com, 2013.

6.Nf3 Qb6 7.Qc1 d5 (7...e4 8.d4 ef3 9.dc5 fg2 A) 10.cb6?? gh1Q (10...gh1R?! 11.Qd1=) 11.ba7 Nbc6–+; B) 10.Bg2 Qc5 11.Nc3=) 8.Nc3 (8.d4 ed4 9.Bd4 Nbc6 10.Bc5 Qc5=) 8...Bd7+= 9.a4 (9.Be2 0-0+=) 9...e4 10.a5 Qb4 (better is 10...Qd8 11.Nd4 Bd4 12.ed4 Nbc6+=) 11.Nh4+/– White threatens.... what? 11...g5 12.Nf5 Bf5 A deflection (12...Nf5 Theme: Deflection from d5 13.Nd5). aschellen (1810) – luxator_26 (1915), internet, 2007.

6.Nf3 d5 7.Be2 0-0 8.d3 Nbc6 9.0-0 Bf5 10.Nbd2 d4 11.ed4 ed4 12.Nb3 Bb6 13.a4 Bg4 14.a5 Bc7 15.h3 Bf3 16.Bf3 Qd6 17.g3 Nf5? 18.Bg2 Ng3 19.fg3+– Qg3 20.Qf3 Qh2 21.Kf2 Ne5 22.Qd5 Kh8 23.Rh1?? Qf4 24.Ke2+– Qe3 25.Kd1 Rfd8 26.Qe4 Qf2 27.Qe2 Qf4 28.Qd2 Qf5 29.Be4 Qh5 30.Kc1 f5 31.Bb7 Rab8 32.Bg2 Qg6 33.Nd4 Rbc8?? 34.Nf3?? Nd3!–+ 35.Kb1 Nb2 36.Kb2 Rd2 37.Nd2 Qg2 38.Nb3 Be5 39.Ka2 Qc2 40.Ka3 Ba1 41.Ra1 Rc3 (41...Rc3 42.Rb1 Qb1 43.Ka4 Qb3) 0–1. exp2005 – shoam88, internet, 2011.

5.Nc3 Bc5 6.Na4 Be7 7.e4 d5 8.ed5 Qd5 =.

5.d4 ed4 6.Bd4 Nd4 7.Qd4 Qa5 8.Qd2 Qc5 =.

5.e4 =.

5.ab4 Bb4 6.c3 Ba5 7.Nf3 d5 (7...Nc6 8.Ba3–/+) 8.c4 (8.Qa4 Nc6 9.Bb5 Bf5 10.Bc6 bc6 11.Qc6 Kf7 12.Ra5 Ne7=) 8...Be6 9.c5 b6 10.Qa4 Bd7 11.Bb5 e4 12.Nd4 bc5 13.Nc6? (13.Ne6 Qe7 14.Nf4=) 13...Bc6?? (better is 13...Nc6 14.Bc6 Bc7–+) 14.Bc6+/– Nc6 15.Qc6 Kf8 (15...Kf7 16.Ra5! Rb8+/–) 16.Qc5 Ne7 17.Ra5 Rc8 (17...Qd7 18.Ba3 Kf7 19.Nc3+–) 18.Qa7 Nc6 19.Qc5 Kg8 20.Ra6 (20.Rb5 Ne5 21.Qa7 Nd3 22.Ke2 Qe8+–) 20...Ne7? (better is 20...Ne5 21.Qd4 Nd3 22.Ke2 Qd7+/–) 21.Qa5 (21.Qa3 Kf7+–) 21...Qe8 (21...Qa5 22.Ra5 Kf7 23.Ke2+–) 22.0-0 (better is 22.Ba3 Qd7 23.Nc3+–) 22...Rc2 (22...Kf7 23.Nc3 Ra8 24.Ra1 Ra6 25.Qa6+–) 23.Ra8 (better is 23.Ba3 h6 24.Re6 Kh7 25.Re7 Qc6+–) 23...Rc8 24.Rc8 Qc8 25.Rc1 Qb8 26.Qa3 (26.Ba3 Kf7 27.Be7 Ke7 28.Qd5 Rc8 29.Qe4 Kf8+–) 26...Nf5 (26...Kf7 27.d3+–) 27.g3 (better is 27.Qc5 Qd8 28.Qc8+–) 27...h5 (27...Kf7 28.d3+–) 28.Nc3 h4 (28...Qb7 29.Qa2 Kh7 30.Qd5 Qd5 31.Nd5+–) 29.g4 Ne7 (29...Nd6 30.Nd5 Qd8 31.Rc7+–) 30.Rb1 (better is 30.Qe7 Rh6 31.Qe6 Kh7+–) 30...f5 (30...Kf7+–) 31.Qe7 d4 (31...Rh6 32.Ne4! Qf8 33.Qf8 Kf8 34.Ba3 Ke8 35.Nd6 Kd7 36.Nf5+–) 32.Nd5 (32.Qe6 Kh7 33.Qf5 Kg8 34.Qd5 Kh7 35.Ne4 Qe8 36.Bd4 Qg6 37.Ng5 Qg5 38.Qg5 g6 39.Qe7 Kh6 40.Qh4) 32...Qf8 (32...Rh6 33.gf5 Qf8 34.Qf8 Kf8 35.Bd4+–) 33.Bd4 Qe7 34.Ne7 Kh7 35.Nf5 h3 36.Bg7 Rc8 37.Bc3 Kg6 38.f4 (better is 38.Ne7!? Kg5 39.Nc8 Kg4+–) 38...ef3 39.Ne7 Kg5 40.Nc8 Kg4 41.Rb4 1–0. Willi_weizenkeim – Dysman, playchess.de, 2004.

5.ab4 Bb4 6.c3 Bc5 7.d4 Qb6 8.dc5 Qb2 9.Ra4 Na6? (better is 9...b5 10.Rb4 Qa1 11.Bb5 Nc6=) 10.Ba6+– ba6 11.Rb4 Qa2 12.Qf3 a5 13.Rb5 a6 14.Qa8 ab5 15.Qc8 Ke7 16.Nd2 Qa1 17.Ke2 Qc3 18.Ngf3 e4? (18...b4+–) 19.Nd4 Qd3 20.Ke1 a4 (20...Qa3 21.Nf5 Ke6 22.Qe8 Ne7 23.Ng7 Kd5 24.Qd7 Kc5 25.Qe7 Kb6 26.Qa3 Rc8+–) 21.Nf5 Kf7 (21...Ke6 22.Nd6 f5+–) 22.Nd6 Kg6 23.Qe8 Kg5 24.h4 Kg4 25.Qd7 Kh5 26.Qf5 1–0. Baumann,Heinz – Valica,Slavo, TT–16 ETC, 2005.

5.ab4 Bb4 6.c4 Ne7 7.Bc3 Bc3 8.Nc3 0-0 9.d4 d6 10.d5 (10.Nf3 Nbc6=+) 10...Nd7 11.Qc2 (11.Nb5 Qb6-/+) 11...Nc5 12.0-0-0? (12.Bd3!? f5 13.Be2-/+) 12...a6 (better 12...Bf5 13.e4 Bd7-+) 13.Na4?? (13.Kd2 Bf5 14.e4 Bg6-+) 13...Na4 (better 13...Bf5 14.Rd3 Nd3 15.Bd3 Bd3 16.Qd3 b5-+) 14.Qa4 Bd7 15.Qc2 (15.Qa3 Nc8-+) 15...b5 (15...Qa5 16.Nf3-+) 16.Bd3 Rc8 17.Bh7 Kh8 18.e4 (18.Bd3-+) 18…Rc4 (18...Rc4 19.Qc4 bc4-+ (19...Kh7?! 20.Qb4=)) 0-1. pat_cash87 - xwiso (1830), lichess.org, 2020.

5.ab4 Bb4 6.Bc4 d6 7.Nc3 Ne7 8.Nge2 Ng6 9.0-0 Qe7?? (9...Bg4 10.Nd5 Nc6 11.c3=) 10.f4?? (better is 10.Nd5!? Qd8 11.Nb4+–) 10...Be6?? 11.Bd3?? 0-0?? 12.f5+– Nh4 13.fe6 Qe6 14.g3 Ng6 15.Bf5 Qc4 16.d3 Qc5 17.Qd2 Ne7 18.d4 ed4 19.Be6 Kh8 20.Nd4 Nbc6 21.Nc6 Nc6 22.Kh1 Ne5 23.Qd4 Qc6 24.Bd5 Qd7?? 25.e4 Qh3 26.Ne2 Bc5 27.Qd2 Ng4 28.Nf4 Qh2?? 29.Qh2 Nh2 30.Kh2 g5 31.Ne6 Rfe8 32.Bf6 Kg8 33.Nc5 Kf8 34.Bg5 Kg7+– 35.Bf6 Kg6 36.Ne6 Rab8 37.Rf4 h6 38.Raf1 b5 39.Bd4 a5 40.Rf6 Kh7 41.Rf7 Kg6 42.R1f6 Kh5 43.Ng7 Kg4 44.Ne8 Re8 45.Rg7 Kh5 46.Bf7 1–0. dtpwaldi – jacekp13, internet, 2011.

5.ab4 Bb4 6.Nf3 Ne7 7.Bc4 (7.c3!? Ba5 8.d4+=) 7...d5–/+ 8.Bb3 Nbc6 9.0-0 0-0 10.c3 Ba5 11.d4 e4 12.Nfd2 Kh8 13.c4 Nb4 (13...Be6 14.f3 Bd2 15.Nd2 dc4 16.Nc4+=) 14.c5 (14.cd5!? Bf5 15.d6=) 14...Nd3 15.Bc3 Bc3 16.Nc3 Nc6 (16...f5 17.Nb5=) 17.Bc2 (17.f3 ef3 18.Qf3 Ne7+/–) 17...f5 18.Nb3 (18.Bd3!? ed3 19.Qb1+=) 18...Ncb4 19.Bd3 Nd3 (worse is 19...ed3 20.Ra4 Nc6 21.Qd3+=) 20.Nc1 Nb2 21.Qc2 Nc4 22.N1e2 Be6 23.Nf4 Bf7 24.Rfb1 g5 25.Nfe2 Rg8?? (better is 25...b6+=) 26.Rb7+– a5?? (better is 26...Qf6 27.Rd7 Rgd8 28.Rda7 Ra7 29.Ra7 f4 30.ef4 gf4+–) 27.g3 (better is 27.Rf7 Qc8 28.Ng3+–) 27...Bg6 28.Rb5 f4 (28...Be8!? 29.Rbb1 Bc6+=) 29.ef4+/– gf4 30.Nf4 e3 31.Ng6 Rg6 32.Nd1 (32.fe3!? Ne3 33.Qf2+–) 32...ef2 33.Nf2 Qc7 34.Rb3 Rf8 35.Rf1 Rgf6 36.Rd3 Qf7 37.Rdd1?? (better is 37.Qa2+=) 37...Ne3–+ 38.Qe2 Nd1 39.Qd1 (39.Rd1 Rf2 40.Qe5 Qf6 41.Qf6 R8f6 42.Ra1–+) 39...Rf2 0–1. Fournier,Frederic (1950) – pupurri (1965), Echecs21, 2003.

5.Bb5 a6 6.ab4 Bb4 =+.

5.Bd3 g6 6.f4 Nc6 (6...ef4 7.ef4 ba3 8.Na3 d5 9.Nb5 Nc6+=; 6...ba3 7.Na3 ef4 8.ef4 d5 9.Nb5 Nc6+=) 7.Nf3 ba3 8.Na3 ef4 9.ef4 d5 +=.

5.d4 A) 5...ed4 A1) 6.Bd3 de3 (6...Qa5 7.Bd4 Nc6 8.ab4 Bb4 9.Kf1 Qg5+=) 7.Qh5 Ke7 8.Qc5 d6 9.Qe3 Kf7+=; A2) 6.ed4 ba3 (6...Qe7 7.Be2 b6 8.Nd2 Nc6 9.ab4 Nb4+=; 6...d5 7.Bd3 Nh6 8.Nf3 ba3 9.Bc1 Bb4+=) 7.Ba3 Ba3 8.Na3 d5 9.Bb5 Nc6+=; A3) 6.Bd4 ba3 (6...Nc6 7.ab4 Bb4 8.c3 Nd4 9.Qd4 Ba5=; 6...Qa5 7.c3 ba3 8.Na3 Ba3 9.Qb3 Nc6=) 7.Na3 Nc6 8.Nb5 a6 9.Bc3 Rb8+=; B) 5...Nc6 6.Bd3 (6.ab4 Bb4 7.c3 Bd6 8.Bd3 Nge7 9.Qh5 g6+=; 6.d5 Nb8 7.Bd3 Nh6 8.Nf3 ba3 9.Ba3 Ba3+=) 6...ba3 7.Na3 Nge7 8.de5 Ne5 9.Be5 Qa5=; C) 5...ba3 6.Na3 (6.Ba3 Ba3 7.Ra3 ed4 8.ed4 Ne7 9.Nf3 d5+=) 6...ed4 7.Bd4 Nc6 8.Nb5 a6 9.Bc3 Rb8+=.

6.Bb3 ba3 7.Na3 Bf5 8.d4 ed4 9.Qd4 Ne7 +=.

6.Bb3 Nc6 7.ab4 Bb4 8.Ne2 Nge7 9.c3 Ba5 10.Ba3 0-0 11.e4 Rf7 12.ed5 Nd5 13.Bd5 (13.0-0!? Be6–/+) 13...Qd5–+ 14.0-0 Bf5 15.d4 Rd8 16.Nd2 (16.Bc1 b5–+) 16...ed4 17.cd4 Bd2 (better is 17...Nd4!? 18.Nd4 Qd4 19.Nf3 Qd1 20.Rfd1–+ (20.Rad1?? Bd3–+)) 18.Qd2 Nd4 19.Nf4?? (better is 19.Nd4 Qd4 20.Qd4 Rd4 21.Bc5–+) 19...Nf3! (19...Nf3 20.gf3 Qd2–+) 0–1. Farklempt – Zippy, ICS, 1994.

6.Bb3 Nc6 7.f4 ba3 8.Na3 Bb4 9.Qh5 g6 –/+.

6.Bb3 Nc6 7.Nh3 Be6 8.f4 Qd7 9.0-0 0-0-0 (9...Bg4!? 10.Qe1 Bh3 11.gh3 e4-/+) 10.fe5 (better 10.Nf2=) 10...f5?? (better 10...Bh3 11.gh3 ba3 (11...Ne5?! 12.ab4 b6 13.Bc3+=) 12.Na3 fe5=+) 11.Nf4+/- Nge7? (better 11...g5!? 12.Ne6 Qe6 13.ab4 Bb4+/-) 12.ab4+- (12.Ne6?! Qe6 13.ab4 Kb8+-) 12...Nb4 13.Ra7 (worse 13.Ne6 Qe6 14.Ra7 Nbc6+-) 13...Nec6 14.Ra1 Kb8 15.Nc3 g5 (15...Bc5 16.Nb5 Rhe8 17.d4+-) 16.Ne6 (16.Nfd5 Nd5 17.Nd5 Bd5+-) 16...Qe6 17.Nb5 Bc5 (17...Na6 18.Qe2+-) 18.Qf3 (18.Ra8 Ka8 19.Nc7 Kb8 20.Ne6 Bb6 21.Nd8 Rd8+-) 18...f4 (18...g4 19.Qf4 Kc8 20.Qf5 Qf5 21.Rf5+-) 19.Nd4 (better 19.Ra8! Ka8 20.Nc7 Kb8 21.Ne6+-) 19...Nd4 20.ed4 Bb6 21.Bc3 (better 21.Ra4!? Nc6 22.Kh1 Rhf8+-) 21...Nc6 22.Qd3 (22.Qf2 Qh6+-) 22...Rhe8? (better 22...Qe5! 23.Ra4 Qe4+/-) 23.Kh1 Qg6 24.Qb5 (better 24.Qg6 hg6 25.Ra4+-) 24...Qh5?? (better 24...Nd4 25.Bd4 Bd4+/-) 25.Qb6+- Re6 26.Ra7! Na7 (26...Na7 27.Qd8 Double attack (27.Qe6 Pinning; 27.Qd8 Deflection)) 27.Qd8 Nc8 28.Ba5 b6 29.Bb6! Rb6 (29...Rb6 30.Bd5 Combination) 30.Bd5 Rh6 (30...Qg6+-) 31.Rb1 Ka7 32.Qc7 Ka6 33.Qb7 (33.Bc4) 33...Ka5 34.Qb5 (34.Ra1) 1-0. FeegLood (2815) - manitodeplomo (2300), lichess.org, 2017.

6.Bb3 Be6 7.Nf3 Nc6 8.0-0 Bg4 9.ab4 Bb4 –/+.

6.Bb3 Bf5 7.d4 ba3 8.Na3 ed4 9.Qd4 Ne7 +=.

6.Bb3 Nh6 7.Qe2 ba3 8.Ba3 Ba3 9.Ra3 Nc6 –/+.

6.Bb5 Nc6 7.f4 ba3 8.Ba3 Ba3 9.Ra3 ef4 –/+.

6.Bb5 Bd7 7.Bd7 (7.Bd3 g6 8.Be2 Qc7 9.c3 ba3–/+) 7...Qd7 (7...Kd7?! 8.ab4 Ke8 9.b5= a6+=; 7...Nd7 8.ab4 Bb4 9.Qg4 Qe7–/+) 8.a4 (8.Ne2 ba3 9.Ba3 Ba3–/+) 8...Nc6 (8...Bd6 9.Ne2 Ne7–+) 9.Nf3 (9.Nh3 Bd6–/+) 9...Bd6 10.0-0 Nge7 11.d4 e4 12.Nh4? (12.Nfd2!?–+) 12...0-0 (better is 12...g5!? 13.Qh5 Kd8 14.f3 gh4 15.fe4 de4 16.Nd2–+) 13.g3 Qh3 14.Nd2 g5 15.Nf5?? (better is 15.Ng2–+) 15...Nf5 16.f3 (16.Qe2 g4 17.Qb5 Nce7–+) 16...Ne3 17.Qe2 Nf1 18.Qf1 (18.Rf1 ef3 19.Rf3 Rae8–+) 18...Qf1 19.Rf1 ef3 (19...e3!? 20.Nb3 Rae8 21.Re1–+) 20.Rf3 Rae8 21.Kg2 Re2 22.Kh1 (22.Rf2 Rfe8 23.Kf1–+) 22...Rd2 23.Bc1 Rc2 (23...Rd1 24.Kg2 Rc1 25.Rf2 Nd4 26.Kh3–+) 24.Rf1 Nd4 (better is 24...Re8 25.Kg1 Nd4–+) 25.h4 gh4 (25...Re8 26.Kg1 Nf3 27.Rf3 Re1 28.Rf1 Bc5 29.Be3 Be3 30.Kh1 Rf1) 26.gh4 Rh2 27.Kg1 Ne2 0–1. ronnieg (2575) – SuperIntellect (2755), fics, 2001.

6.Bd3 Qc7 (6...Be6 7.ab4 Bb4 8.Qh5 Bf7 9.Qg4 Bf8–/+; 6...Qd7 7.e4 ba3 8.Na3 Bc5 9.ed5 Qd5–/+) 7.c3 ba3 8.Na3 Be6 9.Nf3 Qb6 –/+.

5.ab4 Ne7 6.Be2 (6.d4 ed4 7.Bd4 Nec6+=) 6...Ng6 7.Bc3 (7.b5 Nf4 8.d4 Ng2 9.Kf1 Nf4=) 7...Be7 (7...Qb6 8.Bh5=) 8.Nf3 (8.d4 Qb6=) 8...0-0 (8...Nf4 9.0-0=) 9.Bc4+= Kh8 10.d3 (10.d4 Qc7 11.Bd3 Rd8+=) 10...Qb6 (10...d5 11.ed5 Nf4 12.0-0=) 11.b5+= Bc5 (11...f5 12.0-0 d6 13.Bd2+=) 12.Ba5 (12.0-0!?+=) 12...Bf2= 13.Kf1 Qe3 (13...Qc5 14.c3 Qe3 15.Qc2+=) 14.Bd2 (14.Bb4 d6=) 14...Qc5 15.Nc3 Bd4?? (better is 15...Bh4 16.Nh4 Nh4+=) 16.Nd4+– ed4 17.Nd5 Qd6 (better is 17...Ne7 18.Bb4 Nd5 19.Bc5 Ne3 20.Kg1 Nd1 21.Bf8 d5 22.ed5 Ne3+–) 18.Bb4 Qe5 19.Bf8 Nf8 20.Qf3 b6 (20...Qd6 21.Qg3 Qg3 22.hg3+–) 21.Ke2 (better is 21.Nb6 ab6 22.Ra8+–) 21...Bb7 +–. tata (2000) – macedon (2065), net–chess.com, 2008.

5.Bc4 ba3 A) 6.Na3 Qb6 (6...Nc6 7.Nf3 d6 8.0-0 f5 9.ef5 Bf5=; 6...Na6 7.Nb5 Qb6 8.d4 Nc7 9.Nc7 Qc7=) 7.Nb5 Nc6 8.Nf3 a6 9.Bc3 Rb8+=; B) 6.Ba3 d6 (6...Ba3 7.Na3 Nc6 8.Bg8 Rg8 9.Qh5 Ke7=) 7.Nc3 Nc6 8.Bg8 Rg8 9.Qh5 g6+=.

5.Bc4 Nc6 A) 6.Bg8 Rg8 7.Qh5 g6 8.Qh7 Rg7 9.Qh4 d5+=; B) 6.Nf3 a6 (6...Qb6 7.0-0 Bc5 8.Bb3 d6 9.ab4 Qb4=; 6...ba3 7.Na3 d6 8.0-0 f5 9.ef5 Bf5=; 6...Qc7 7.0-0 Nge7 8.Bb3 Ng6 9.d4 Nf4=; 6...Nh6 7.0-0 Qb6 8.Bb3 ba3 9.Na3 Na5=) 7.ab4 Nb4 8.d4 d5 9.ed5 e4+=; C) 6.Ne2 Qc7 (6...Na5 7.Bd5 ba3 8.Na3 Ne7 9.Nc3 Ng6=; 6...ba3 7.Na3 Nge7 8.Nb5 Ng6 9.0-0 a6=; 6...a6 7.ab4 Nb4 8.Nbc3 Qc7 9.Bb3 b6+=; 6...Qb6 7.0-0 Nge7 8.d3 Na5 9.Nd2 Nec6=) 7.0-0 a6 8.ab4 Nb4 9.Na3 b6+=; D) 6.Nh3 d6 (6...ba3 7.Na3 d6 8.Qh5 g6 9.Qf3 Nh6+=; 6...Nge7 7.Qh5 Ng6 8.0-0 Qc7 9.Bd5 Bc5+=; 6...b6 7.f4 ba3 8.Na3 a6 9.Bg8 Rg8=) 7.Bg8 Rg8 8.Qh5 g6 9.Qh7 Rg7–/+; E) 6.ab4 Bb4 7.c3 Bf8 8.Nf3 f5 9.ef5 Nh6=.

5.Bc4 Qc7 A) 6.d3 ba3 (6...Nc6 7.ab4 Bb4 8.c3 Bc5 9.d4 Bb6+=) 7.Na3 Qb6 8.Ra2 Nc6 9.c3 Na5+=; B) 6.Bb3 Na6 (6...Nc6 7.Qh5 g6 8.Qf3 ba3 9.Na3 Bc5=; 6...b6 7.ab4 Bb4 8.Bg8 Rg8 9.Qh5 g6=; 6...ba3 7.Na3 Ne7 8.Ne2 Na6 9.d4 Ng6=; 6...a5 7.ab4 Bb4 8.Bg8 Rg8 9.Qh5 g6=) 7.Qh5 g6 8.Qf3 ba3 9.Na3 Nc5+=; C) 6.Qh5 g6 7.Qe2 Nc6 8.ab4 Bb4 9.Nc3 Nge7=; D) 6.Ba2 Nc6 (6...ba3 7.Na3 Ne7 8.Ne2 Qc6 9.Nc3 f5=; 6...Na6 7.Nf3 Ne7 8.d4 ba3 9.Ba3 d6+=; 6...a6 7.ab4 Bb4 8.Bg8 Rg8 9.Qh5 g6=; 6...b6 7.ab4 Bb4 8.Bg8 Rg8 9.Qh5 g6=) 7.c3 ba3 8.Na3 Nh6 9.Nf3 Be7+=; E) 6.Qe2 Nc6 (6...b5 7.Bb3 a6 8.ab4 Bb4 9.Nc3 Bb7=) 7.ab4 Nb4 8.d4 ed4 9.Nf3 Nc6=.

5.Bc4 Ne7 6.Qh5 g6 7.Qf3 Nec6 8.Ne2 Na6 9.0-0 Nc7 10.ab4 b5 (worse 10...Nb4 11.Be5 Be7 12.Na3+/-) 11.Bb3 Bb4 12.d4 Qe7 13.Nbc3 Bb7 (13...Nd4? 14.Nd4 ed4 15.Nd5 Nd5 16.Bd5+-) 14.de5 (14.Nd5 Nd5 15.Bd5 a6=) 14...Ne5=+ (14...Qe5? 15.Nd5 Qb2 16.Nc7 Kd8 17.Na8 Ba8 18.Qd3+-; 14...fe5?! 15.Qd3 a6 16.Nd5 Nd5 17.ed5=) 15.Qh3 a5 16.Nf4 a4 17.Ncd5 Bd5 18.Nd5 Nd5 19.Bd5 Rc8 20.Rab1 Qc5 (20...Rb8!?=) 21.Qh4+= Rf8 22.Qh7 a3 23.Ba1 Kd8 24.Rfd1 Qc2 (better 24...Bc3!?+=) 25.Be6 Qc6 26.Bd7 Nd7 27.Rb4 a2 28.Rbd4 Rc7 29.Qg7 Kc8?? (better 29...Ke8+-) 30.Rd7! Rd7 (30...Qd7 31.Qf8 Double attack (31.Qf8 Decoy; 31.Qf8 Remove defender); 30...Rd7 31.Qf8 Double attack (31.Qf8 Remove defender)) 31.Qf8 Kb7 32.Rf1 Qe4 33.Qf6 (worse 33.Bf6 Qe2 34.Bd4 Rd4 35.Qg7 Ka6 36.Qd4 Qc2+-) 33...b4 (33...Qe2 34.Bd4 (34.Qg6 Rd1 35.Qf7 Kc8 36.Qf5 Kb7 37.Qf3 Qf3 38.gf3 Rb1+=) 34...Rd4 35.Qd4+-) 34.Qb2 Qc4 35.Qe5 Rd5 (35...b3 36.Re1+-) 36.Qg7 Kb6 (36...Qc7 37.Qg6 b3 38.Re1+-) 37.Qg6 (37.Qg6 Kb7 38.Qf7 Kb6 39.Qf6 Kb7 40.Qe7 Ka6 41.Re1+-) 1-0. chuckhar (2310) - marekt (2190), gameknot.com, 2014.

5.Be5? Qb6?? 6.Bb8+= Rb8 7.ab4 Bb4 8.c3 Bd6 (8...Be7 9.d4+=) 9.d4 (9.Bc4 Ne7+=) 9...Ne7 (9...Bf4 10.Ne2 Bc7 11.Nd2+=) 10.Bd3 (10.Nf3 Bf4+=) 10...Bf4 (10...Bc7 11.Nf3+=) 11.Ne2+/– Bc7 12.0-0 0-0 13.Nd2 f5 (13...d5 14.c4 de4 15.c5 Bh2 16.Kh1+/–) 14.Nc4 (14.Bc4 d5 15.Bd5 Nd5 16.ed5 Qd6+=) 14...Qh6 (14...Qc6 15.d5 Qg6 16.d6 fe4 17.de7+–) 15.e5 a6 16.Qb3 Kh8 17.Qa3 Re8 18.Nd6 Bd6 19.Qd6 Qd6 20.ed6 ½–½. Woschkat,Karl_Heinz – Holpp,Richard, IECG, 1997.

5.Be5? Nc6.

5.Be5? fe5 6.Qh5 Ke7 7.Qe5 Kf7 8.Bc4 d5 9.Bd5 Kg6 10.Nh3 Bh3 11.Qg3 Qg5 12.Qg5 Kg5 13.Bb7 Nc6 14.Ba8 Nd4 15.Kd1 b3 16.cb3 (16.gh3?! Nc2 17.Kc1 Na1 18.f4 Kh4=) 16...Bg4 17.f3 Be6 18.Bd5 Bd5 19.ed5 Nb3 20.Ra2 Nf6 21.Rb2 Nc5 22.Rb8 Nd5 23.Re1 Kf6 24.Nc3 Nc3 25.dc3 Kf7 26.Ra8 a6 27.Ree8 g5 28.Rec8 Ne6 29.Ra6 Bg7 30.Ra7 Kg6 31.Rc6 Re8 32.a4 h5 33.a5 Be5 34.h3 Kf5 35.Rf7 Bf6 36.a6 Rd8 37.Kc2 Ra8 38.a7 Kg6 39.Rd7 (39.Re6?! Kf7 40.Ra6 Be7+/–) 39...Nf4 40.Rb6 Ng2 41.Rb8 Ne1 42.Kd1 Ra7 43.Ra7 Ng2 44.Rg8 Kh6 45.Rc8 Kg6 46.Rc6 Ne3 47.Kd2 Nd5 48.c4 Nf4 49.Raa6 Kf5 50.Rf6 Ke5 51.Rfc6 Ng2 52.Ra5 Kf4 53.Rf6 Kg3 54.Rg5 Kf2 55.c5 Ne3 56.Kd3 Nd1 57.c6 Ke1 58.Rg1+– Kf2 59.Rd1 Kg3 60.h4! Kg2 61.Rg6 Kf2 1–0. Gyger,Werner – Martins,Karin, corr TKM/A002, 2000.

5.Be5? fe5 6.Qh5 Ke7 7.Qe5 Kf7 8.Qd5 Kg6 9.Qf5 Kh6 10.Qh3 Kg6 11.Qf5 Kh6 12.Qh3 Kg6 13.Qf5 =.

5.Be5? fe5 6.Qh5 g6?? (better is 6...Ke7 7.Qe5 Kf7 8.Qd5 Kg6 9.Qf5 Kh6 10.Qh3 Kg6 11.Qf5 Kh6 12.Qh3 Kg6 13.Qf5=) 7.Qe5+– Qe7 8.Qh8 Nf6 9.Nf3 (9.Ne2+–) 9...d6? (9...Ne4!? 10.Be2 Qg7 11.Qg7 Bg7+/–) 10.e5 (10.ab4 Kd7 11.Bc4 Nc6=) 10...de5 11.Bc4 (11.ab4 Nc6 12.b5+/–) 11...Nc6+/– 12.Ng5 Nd4 13.0-0 (13.Kd1 Kd7 14.Nh7 Nh7 15.ab4=) 13...Bf5 (better is 13...Kd7!? 14.Bf7 h6+/–) 14.c3 0-0-0 (14...bc3 15.Nc3 0-0-0 16.Nf7+/–) 15.Nf7 (15.cd4?! Bh6 16.Qd8 Qd8+=) 15...Ne2 16.Kh1 Re8 17.Bb5?? (better is 17.ab4 Bh6 18.Qe8 (18.Nh6?! Rh8 19.Nf5 gf5 20.Be2 Kb8=; 18.Be2? Qf7 19.Qe8 Ne8–+) 18...Ne8 19.Nh6+–) 17...Bd7= 18.Bc4 (worse is 18.Be2 Qf7 19.ab4 Kb8–/+) 18...Bh6 19.Qe8 (19.Nh6 Theme: Deflection from h8 19...Rh8) 0–1. Hjortstam,Kurt – Diener,Rudolf, corr 3GMMsemi–08, 1998.

5.Be5? Qe7 6.Bb8 Qe4 7.Qe2 Qe2 8.Be2 Rb8 9.ab4 Bb4 =.

6.c3 Ba5 7.Bc4 Ne7 8.d4 Bb6 9.Nf3 Nbc6 =.

6.c3 Bc5 7.d4 Bb6 8.Bc4 Nc6 9.Nf3 d6 =.

6.c3 Bd6 7.Na3 Nc6 +=.

6.c3 Bd6 7.Bc4 Qb6 8.Ra2 Ne7 9.Nf3 Qc6 +=.

6.c3 Bd6 7.d4 Nc6 8.Nf3 Nh6 9.Bc4 Nf7 10.Bf7 (10.Na3 ed4 11.Nb5 Be7+=) 10...Kf7+= 11.Qb3 Kf8 12.0-0 Qe8 (12...g6!?+=) 13.Nbd2 b5 14.de5 Ne5?? (better is 14...fe5 15.Qb5 a5+/–) 15.Qd5+– (15.Qd5 Bb7 16.Qb7+– (worse is 16.Qd6 Qe7 17.Qd4 Nf3 18.Nf3 Kf7+–)) 1–0. mikleol (2220) – zrenjanin (2050), gameknot.com, 2014.

6.c3 Be7 7.Qb3 =.

6.c3 Be7 7.Bc4 d6 8.d3 f5 9.ef5 Nf6 =.

6.c3 Bf8 7.Bc4 Nc6 8.Nf3 f5 9.ef5 Nh6 =.

6.Nc3 Bc3 7.Bc3 d5 8.Qh5 g6 9.Qf3 Be6 –/+.

6.Nc3 Nc6 7.Bc4 Nge7 +=.

6.Bc4 Nc6 (6...Ne7 7.c3 Bc5 8.d4 Bb6 9.Nf3 Nbc6=) 7.c3 Bf8 8.Nf3 f5 9.ef5 Nh6 =.

5.ed5 cb4 6.Bb5 Bd7 7.Bd3 =.

5.ed5 Qd5 6.Nc3 Qd8 7.bc5 Bc5 8.Ne4 =.

5.ed5 Qd5 6.Nc3 Qe6 7.bc5 (7.b5 Nh6=) 7...Bc5 8.Ne4 Be7 9.Bb5 (9.Qh5 g6 10.Qe2 Qb6 11.Qb5 Qb5 12.Bb5 Bd7=) 9...Bd7 10.Qh5 g6 11.Qe2 Nh6 (11...Bb5 12.Qb5 Qc6 13.Nc3=) 12.f4 (12.Bc4 Qg4+=) 12...Bb5 (12...Qb6 13.Nc3 Nf7 14.Nd5+=) 13.Qb5+= Qc6 14.Qc6 Nc6 15.fe5 (15.Nf3 Nf7=) 15...Ne5 16.Be5 fe5 17.Nf3 Nf7 18.0-0 (18.Rf1 Rf8=) 18...Rc8 19.Rfb1 (19.c3 Rf8=) 19...b6 20.c3 Rc4 (20...Rf8 21.Rb5=) 21.d3 Ra4 The isolani on a3 becomes a target 22.Rb5 Attacks the isolani on e5 22...0-0 (22...Ra3 23.Ra3 Ba3 24.Ne5 Ne5 25.Re5 Kd7 26.Nf6 Kd8 27.Re1=) 23.Ne5 Ne5 24.Re5 Ra3 Do you see the mate threat? 25.Rc1 (25.Ra3 Ba3 26.d4 Kg7=) 25...Bd8 (25...Bf6 26.Re6 Bg7 27.Re7=) 26.d4 (26.Rd5 Be7=) 26...Bc7 (26...Ra2 27.d5=) 27.Re6+= Bf4 28.Re1 (28.Rd1 Ra2+=) 28...Be3= 29.Kh1 Bf2 (29...b5 30.g3 Ra2 31.Nf6 Kg7 32.Nh5 Kh6 33.Nf6+=) 30.Rd1 Kg7 (30...Ra2 31.d5+=) 31.g3 (31.g3 Be3 32.d5+/–) 1–0. Rosner,Dirk – Boettger,Hellmuth, DESC, 1999.

5.ed5 Qd5 6.Nc3 Qf7 7.f4 (7.bc5 Bc5 8.Ne4=) 7...Bd6 (better is 7...ef4 8.Qe2 Kd8 9.bc5 Bc5 10.Qd3 Qd7+=) 8.Nb5 Bc7 (8...Bf8!? 9.fe5 cb4 10.ab4 Nc6 11.ef6 Nf6 12.Qe2 Kd8+/–) 9.Bc4! Qe7 (9...Qc4 10.Nc7 Double attack (10.Nc7 Deflection)) 10.Nc7 Qc7 11.fe5 fe5 (11...cb4 12.Qe2 Qe7 13.ab4+–) 12.Nf3 Bg4 13.Be5 Bf3 14.Bc7 Bd1 15.Kd1 Nf6 16.bc5 Kd7 17.Bf4 Nc6 18.Rb1 Na5 19.Bd3 Rad8 (19...Kc6+–) 20.Rb5 Nd5 (20...b6 21.cb6 ab6 22.Rb6+–) 21.Bg3 (worse is 21.Ra5 Nf4 22.Be4 Rhe8 23.Bb7 Kc7+–) 1–0. aspasio – alaamattar, net–chess.com, 2013.

4.Nc3 d5 5.e4 =.

4.Nc3 d6 5.Nf3 Nh6 6.g3 (6.e4 f5+=) 6...Be6 (6...d5 7.e4+=) 7.Bg2 Na6 8.0-0 Be7 9.b5 Nc5 (9...cb5!? 10.Nb5 d5+=) 10.bc6 bc6 11.d3 0-0 12.d4 ed4 (better is 12...Nd7=) 13.Nd4+– (worse is 13.Qd4 Nf5 14.Qd2 d5+=) 13...Bd7 14.Nc6 Bc6 15.Bc6 Nd7? (better is 15...Rb8 16.Rb1 Nf7+–) 16.Ba8 Qa8 17.Qd5 Qd5 18.Nd5 Bd8 19.Rfd1 Nf7 20.Bd4 a6 21.Ra2 Nde5 22.Ne3 Nc6 23.Ba1 (23.Rb2 Ba5 24.Rb7 Rb8 25.Rb8 Nb8+–) 23...Bc7 (23...Bb6 24.Nd5 Bc5 25.Rb2+–) 24.Nd5 Bd8 25.Rb2 Ne7 26.Ne7 Be7 27.Rb7 Re8 28.Ra7 a5 29.Rb1 Bd8 (29...Bf8 30.e3+–) 30.Kf1 (30.Rbb7!? Rf8+–) 30...Ne5 (30...Re7 31.Re7 Be7 32.Bc3+–) 31.Rbb7 1–0. Lopez – Mennie,Alec Norman, Grund Malyszko Memorial–3 prel–45, 1997.

4.c4 a5 5.b5 A) 5...d5 6.cd5 cd5 7.d4 e4 8.Nc3 f5 9.Nh3=; B) 5...Be7 6.d4 (6.e3 cb5 7.cb5 d5 8.d4 e4 9.Nc3=) 6...d5 7.e3 ed4 8.Qd4 Nh6 9.cd5+=; C) 5...cb5 6.cb5 d5 7.d4 e4 8.Nc3 Be6 9.e3=.

4.c4 c5 A) 5.b5 d5 6.cd5 (6.e3 Be6 7.cd5 Qd5 8.Nc3 Qd6 9.Nf3=) 6...Qd5 7.Qc2 Be6 8.Nc3 Qd8 9.e3=; B) 5.bc5 B1) 5...Bc5 6.e3 Qb6 7.Nc3 Na6 8.Na4 Qc7 9.d4+=; B2) 5...Qa5 6.e3 (6.Nf3 Na6 7.Nc3 Nc5 8.e3 Ne7 9.Be2+=; 6.Bc3 Qc5 7.e3 Qe7 8.d4 d6 9.Be2+=) 6...Nc6 7.Nf3 Bc5 8.Bc3 Qc7 9.d4+/–; B3) 5...Nc6 6.e3 Bc5 7.Nf3 d5 8.d4 ed4 9.Bd4+=.

4.c4 Nh6 5.e4 (5.d4 A) 5...ed4 6.Bd4 (6.Qd4 a5 7.b5 d6 8.e4 Nd7 9.Nf3+=) 6...Nf5 7.Bb2 d5 8.cd5 cd5 9.e3+=; B) 5...e4 6.Nc3 (6.e3 d5 7.Nc3 Be6 8.Qb3 Qd7 9.Rc1=; 6.d5 c5 7.d6 Qb6 8.Nc3 e3 9.Nb5=) 6...Qe7 7.e3 d6 8.Nge2 f5 9.Ng3+=; C) 5...a5 6.b5 (6.de5 fe5 7.Nd2 d6 8.Ngf3 ab4 9.ab4=) 6...ed4 7.Bd4 Nf5 8.Bb2 Bc5 9.e4+=) 5...g6 (5...c5!?= 6.b5 d6 7.Nc3 Be6 8.Be2 Nd7 9.d3=; 5...a5 6.b5 (6.Qh5 g6 7.Qh4 ab4 8.ab4 Ra1 9.Ba1=) 6...cb5 7.cb5 d5 8.ed5 Qd5 9.Nc3=) 6.d4+/– Nf7 (6...d6 7.Nf3 Bg7 8.Bd3 0-0 9.0-0+=) 7.Nf3 Qb6? (better is 7...d6+/– 8.Be2 f5 9.Nbd2+=) 8.de5+– fe5 9.Ne5 Ne5 10.Be5 Rg8 11.c5 Qd8 12.Bc4 Rg7 (12...Bg7 13.Bg8 Be5 14.Ra2+–) 13.Bg7 Bg7 14.Ra2 Qg5 15.0-0 Be5 16.Nd2 Qh6 (16...Qe7 17.Nf3+–) 17.Nf3 Bf6 18.Qd6 Qg7 19.Rd2 Bc3 20.Rd3 b6 (20...b5 21.cb6! ab6+–) 21.e5 Bb2 (21...b5 22.Bb3 b4 23.ab4+–) 22.e6 Bf6 (22...Kd8 23.Ng5 Qe7 24.Nf7 Ke8 25.ed7 Nd7 26.Qc6+–) 23.Qc7 Na6 24.Ba6 Ba6 25.ed7 1–0. Woschkat,Karl_Heinz – Zack,Markus, DESC, 1998.

4.d4 d5 5.de5+= a5 6.Nd2 (6.b5 cb5 7.e4 de4 8.Qh5 g6+=) 6...Nd7 (6...ab4 7.ab4 Ra1 8.Ba1 Bb4 9.Ngf3=+) 7.e4 fe5 8.ed5 cd5 9.Ngf3 Ngf6 10.Ne5 Bd6 (10...ab4 11.Qe2 Ne5 12.Be5=) 11.Nd3 0-0 12.Be2 Qc7 13.g3 (13.Nb3 ab4 14.ab4 Ra1 15.Ba1 Re8+=) 13...Nb6 14.0-0 Na4 15.Bd4 Nc3 16.Bc3 Qc3 17.ba5 Bh3 18.Re1 Ra5 The pressure on the isolated pawn grows 19.Bf3 Bf5 (worse 19...Ba3 20.Nb3 Ra4 21.Nf4+/-) 20.Re3 Ra3 (worse 20...Ba3 21.Nf4 Qb4 22.Nb3+/-) 21.Ra3 Qa3 (worse 21...Ba3 22.Nb1 Qa1 23.Na3 Qa3 24.Nf4+/-) 22.g4 Bd3 23.Rd3 The isolani on d5 becomes a target 23...Qc5 24.Nb3 Qb6 25.Qe2 Rf7 (better 25...Kh8!?=) 26.g5+/- Re7 27.Qf1 Ne4 The backward pawn on f2 becomes a target 28.Rd5 Kh8 29.h4 Bg3? (29...h6!?+/-) 30.Kg2 (30.Rf5 Qf2 31.Qf2 Bf2 32.Kg2+-) 30...Bc7 31.Qe2 Qe6 32.c4 Re8 33.Nd4 Qe7 34.Qe4 Qe4 35.Be4 (35.Be4 Re4 36.Rd7+-) 1-0. chandragupta (2170) - marekt (2225), gameknot.com, 2014.

4.e3 a5 5.b5 d5 6.Nf3 Bd6 7.Be2 e4 8.Nd4 c5 9.Nb3 Be6 10.a4 b6 11.0-0 Ne7 12.d3 0-0 13.de4 de4 14.c4 Qc7 15.g3 Bh3 16.Re1 Ng6?? (16...Rd8 17.Qc2 f5 18.N1d2+=) 17.N1d2 (better is 17.Qd5 Qf7 18.Qa8+– (worse is 18.Qd6 Nd7+–)) 17...Ne5?? (17...f5 18.Nb1 Ne7 19.Nc3=) 18.Bf1?? (better is 18.Ne4 Nf7 19.Nd6 Qd6 20.Bf3+–) 18...Bf1 (18...Bg4!? 19.Be2 Be2 20.Re2 Qb7=) 19.Rf1= Nd3 (19...Qb7 20.Qc2=) 20.Qc2?? (better is 20.Ne4 Nb2 21.Qd5 Qf7 A) 22.Nd6?! Qd5 23.cd5 Rd8=; B) 22.Qd6?! Nc4 (22...Qc4? 23.Ned2 Qd3 24.Qe6 Kh8 25.Rfb1+–) 23.Qf4 Rd8=; C) 22.Qa8 Nc4 23.Rac1+/–) 20...f5+= 21.Nc1? (21.Rad1 Nd7+=) 21...Ne5?? (better is 21...Nb2 22.Qb2 Be5–+) 22.Ne2 Nbd7 23.Nf4 Rae8 24.Nd5 Qb8 25.Rad1 g5 (25...Nd3!?=) 26.Be5+= Ne5 27.Nc3 (27.f3!?+/–) 27...g4= 28.Nd5 Nf3 29.Nf3 gf3 30.h4 f4 (30...Be5 31.Kh2=) 31.Nf4 (31.gf4 Qd8 32.Ne7 Qe7–+; 31.ef4 Bf4 32.Kh2 Be5+=) 31...Qc8 (better is 31...Bf4!? 32.ef4 Rf4=) 32.Rd6+/– Rf4 33.Rfd1?? (33.Kh2 Rg4 34.Rfd1+/– (34.Rb6 Qc7 35.Rh6 Qg7–+)) 33...Qh3 34.ef4 (34.Rg6 hg6 35.ef4 Qg2) 34...Qg2 0–1. Fournier,Frederic (1640) – JBconLimon (1845), Active, 2006.

4.e3 d6 5.c4 Be7 6.Qb3 Be6 7.Nf3 Nh6 8.d4 0-0 (8...e4 9.Nfd2 d5 10.Nc3+=) 9.Be2 (9.Bd3 a5+=) 9...a5= 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 Nd7 13.0-0 b5 (13...f5 14.Bb2+=) 14.d5+/- cd5 (14...bc4 15.Bc4 cd5 16.Bd5 Bd5 17.Nd5+/-) 15.cd5 (15.Nd5?! Nb6+=; 15.Nb5?! Nb6 16.cd5 Bd5= (16...Nd5?? 17.Bc4+-)) 15...Bf7 16.Bb5 Nb6 17.Bc6 Qc7 18.b5 Ra8? (18...f5 19.Na4+-) 19.Bb2 (better 19.Ba8!? Na8 20.Bb2+-) 19...Rb8 20.Rc1 Nc8 21.Qc2 Nb6 22.Ba3 Qa7 23.Bb4 Ra8? (23...f5 24.Nd2+-) 24.Qb2 (better 24.Ba8 Na8 25.e4+-) 24...Rb8 25.Ra1 Qc7 26.Ba5 Bd8 27.Na4 Qe7?? (27...Qc8 28.Nb6 Bb6 29.Bb6 Rb6+-) 28.Qb4 (better 28.Bb6 Bb6 29.Nb6+-) 28...Nd5+= 29.Bd5 Bd5 30.Bd8 Rd8 (30...Qd8 31.e4 Be6 32.Nc3=) 31.b6 (31.e4 Bb7+=) 31...Bf3 32.gf3 Qb7 33.Kg2 Nf5 (33...Kh8 34.Nc3 Qc6 35.e4+=) 34.e4 (34.Qe4 Qd7 35.Nc3 Ne7+/-) 34...Nh4 (34...Nd4 35.Nc3 Kh8 36.Ra7=) 35.Kg3+= Ng6 36.Qb5?? (better 36.Qc4 Qf7 37.Qf7 Kf7 38.Nc3+=) 36...Nf4-/+ 37.Nc3 (37.Nc3 Qf7 38.Qd5 Nd5 39.Nd5-+). ClayPigeons (2085) - dr_tom (2220), Rated Bullet game, lichess.org, 2020.

4.e3 Qe7 5.d3 Qf7 6.Be2 Qg6?? 7.Bf1 Ne7 8.h3 d6 9.Nf3 Qf7 10.Nbd2 Ng6 11.Be2 Be7 12.0-0 0-0 13.e4 Be6 14.c4 Qe8 15.Qc2 Qd7 16.Rfd1 Nf4 17.Bf1 Kf7 18.d4 ed4 19.Nd4 Nh3 20.gh3+– Bh3 21.Qc3 Bf1 22.Nf1 c5 23.Nf5 Bd8 24.Rd6 Qc7 25.Rad1 cb4 26.ab4 Kg8 27.c5 Nc6 28.Rd7 Qf4 29.Rg7 Kh8 30.Rdd7 (30.Rdd7 Be7 31.Ne7 Ne7 32.Rge7+–) 1–0. exp2005 – zdenislav1, internet, 2011.

4.e4 (--> 1.b4 e5 2.Bb2 f6 3.e4 c6 4.a3).

5.cd5 cd5 6.d4 e4 7.Nc3 Be6 8.Rc1 a5 9.Qa4=.

5.cd5 cd5 6.e3 a5 7.b5 Be6 8.d4 e4 9.Nc3=.

5.cd5 cd5 6.e3 Nc6 7.Nf3 Be6 8.Be2 Bd6 9.d3 Nge7 10.0-0 0-0 11.Nbd2 Kh8 12.Rc1 Bg4 13.h3 Bf3 14.Nf3 (worse is 14.gf3 b5+=) 14...f5 (14...a6 15.Qb3=) 15.Re1 e4 16.de4 de4 (16...fe4 17.Nd4 Nd4 18.Qd4+= (worse is 18.ed4 Ng6+=)) 17.Nd4 (17.Ng5 Be5 18.Qd8 A) 18...Rfd8?? 19.Nf7 Kg8 20.Ne5+– (20.Be5?! Kf7 21.Bc4 Kg6+=); B) 18...Rad8 19.Be5 Ne5+–) 17...Nd4 (17...Be5 18.b5 Nd4 19.Bd4 Bd4 20.Qd4 Qd4 21.ed4+=) 18.Bd4 (18.Qd4!? Rf6 19.Red1+/–) 18...Nc6 19.Bb2 Qe7 20.Qc2 Rad8 21.Red1 Ne5 22.Qc3 Ng6 23.Bh5 Be5 24.Qb3 Bb2 25.Qb2 Rd1 26.Rd1 Ne5 27.Qc2 Nd3 28.Be2 Rd8? (better is 28...Ne5!?+=) 29.Bd3+– ed3 30.Rd3 Rd3 31.Qd3 Qf8 32.g3 (32.Qd7 Qb8+–) 32...h6 (32...Qc8 33.Qd5+–) 33.Kg2 Qc8 34.Qd2 Qc6 35.f3 Qf3?? (better is 35...Qa6+–) 36.Kf3 g5 37.g4 fg4 38.hg4 h5 (38...h5 39.Qd8 Kh7 40.gh5 Kg7 41.Qe7 Kh6 42.Qf7 g4 43.Kg4 b5 44.Qg6) 0–1. Fournier,Frederic – lordanderssen, Active, 2007.

5.cd5 Qd5 6.e3 (6.Nc3 Qd8 7.Nf3 Bg4 8.e3 Nd7 9.h3=; 6.Nf3 Bg4 7.Nc3 Qd8 8.h3 Bf3 9.ef3=) 6...Bf5 7.Nf3 a5 8.Nc3 Qd7 9.b5+=.

5.Qd4 d5 6.c4 Bd6 7.Nf3 Ne7 8.Nc3 Bf5 (8...a5 9.c5 Bc7 10.e4=) 9.cd5+= cd5 10.e4 (worse 10.Nd5 Nd5 11.Rd1 Be6=) 10...Nbc6 11.Bb5 Be4 (11...de4 12.Ne4 Be5 13.Ne5 Qd4 14.Bd4 Be4 15.Nc6 Bc6 16.Bc6 Nc6 17.Be3=) 12.Ne4 Kf8 13.Qd3 de4 14.Qe4 Qb6 15.Bd3 Re8 16.0-0 Ng6 17.Qf5 Nge5 18.Ng5 Ne7 (18...h6 19.Ne6 Kg8 20.Be4+/-) 19.Nh7 Kg8 20.Qe6 Nf7 21.Rae1 Bb8 (21...Bh2 22.Kh2 Qe6 23.Re6+-) 22.Qb3 (22.Qd7 Qd8 23.Nf6 gf6 24.Qg4 Kf8 25.Bf6 Bh2 26.Kh1 Be5 27.Bh8 Qd3 28.Be5 Ne5 29.Qf4 Nf7+/-) 22...Qd6 (22...f5!? 23.Bf5! Qh6+-) 23.g3 Rd8 24.Bb1 (24.Bc4 Rh7 25.Bf7 Kf8+-) 24...Nd5 25.Qd3 (25.Ba2 Rh7 26.Qd5 Qd5 27.Bd5 Be5 28.Bf7 Kf7 29.Be5 fe5 30.Re5 Rd3+-) 25...Qc6+/- 26.Re7?? (better 26.Ba2 Be5 27.Be5 Ne5 28.Re5 fe5 29.Rd1 Rh7 30.Bd5 Rd5 31.Qd5 Qd5 32.Rd5+-) 26...Ne7-+ 27.Qe3 Be5 (27...Rh7?! 28.Bh7 Kh7 29.Qe7-+) 28.Be4 (28.Be5 Nd5 (28...Rh7?! 29.Rc1 Qe6 30.Bh7 Kh7 31.Bd4 Qe3 32.Be3-+) 29.Qe4 Ne5-+) 28...Nd5 (28...Rh7?! 29.Bc6 Nc6 30.Be5 fe5 31.h4-/+) 29.Bd5 (29.Qb3 Bb2 30.Qb2 Qe6-+) 29...Qd5 30.Be5 Ne5 31.f4 Ng4 (31...Ng4 32.Qf3 Qf3 33.Rf3 Rd1 34.Rf1 Rd3-+) 0-1. paoloone (2115) - Clay56 (2400), ChessWorld.net, 2010.

5.Bd4 a5 =.

4.Nc3 d5 5.g3 (5.e4 de4 6.Ne4 Be6=) 5...Bf5 6.Bg2 Nge7 7.e4 de4 8.Ne4 Nd5 9.d3 b5 (9...Qd7 10.Qh5 Kd8 11.Qe2=) 10.Ne2 a5 11.0-0 (better is 11.c4!? ab4 12.cd5 ba3 13.Bc3+/–) 11...ab4+= 12.ab4 Bb4 (12...Ra1 13.Ba1 Bb4 14.N4c3+=) 13.c4 (13.Nf6 gf6 14.Ra8 Qa8 15.Bd5 Bg4+=) 13...bc4 (13...Ra1 14.Qa1 bc4 15.dc4–/+) 14.dc4 (better is 14.Nf6 gf6 15.Bd5+=) 14...0-0?? (better is 14...Nde7–/+) 15.cd5 Ne7 16.N2c3 Ra1 17.Qa1 Bc3 18.Nc3 c6?! (18...Re8 19.Qa4+–) 19.Rd1 (19.dc6 Qc7 20.Qa2 Kh8+–) 19...cd5 20.Nd5 Ng6 (20...Nd5 21.Bd5 (21.Rd5?! Qb6+–) 21...Kh8 22.Ba3+–) 21.Qa7 (better is 21.Ne3 Qc8 22.Rc1+–) 21...Rf7 22.Qc5 Ne7 (22...Rd7 23.Ba3+–) 23.Ne7 (better is 23.Nf6 gf6 24.Rd8 Kg7 25.f4 ef4 26.Re8+–) 23...Qe7 24.Qe7 (24.Qa5!? h6+–) 24...Re7 25.Rd8 Kf7 26.Bd5 Kg6 27.Bc1 Bh3 28.f3 Ra7 29.Bb2 Ra2?? (29...Rc7+–) 30.Ba2 1–0. alaamattar (2295) – ccarney (2110), net–chess.com, 2013.

4.c4 d6 5.e3 Be6 6.Nf3 (6.Nc3 g6=) 6...Nge7 (6...d5 7.cd5 Bd5 8.h3=) 7.Be2 (7.d4 ed4 8.Bd4 Ng8=) 7...g6 (7...d5 8.Qc2=) 8.e4 (8.d4 Bf7+=) 8...b6 (8...Bg4 9.Ng1 Be2 10.Ne2= (worse is 10.Ke2 f5–/+)) 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Bg7 12.0-0 Rg8 (12...Nc6 13.Qe3+=) 13.Qd2 (13.Qe3 Kf7+=) 13...f5 (13...Nc6 14.Re1+=) 14.Bg7 Rg7 15.ef5 gf5 (15...Nf5 16.Bf3 Qf6 17.Ba8 Qa1 18.Nc3 Qa3 19.Re1+/–) 16.Qh6 (16.Qc3 Kf8 17.Re1+=) 16...Rg6? (better is 16...Kf7+/–) 17.Bh5+– Bf7 (17...Kd7 doesn't change the outcome of the game 18.Bg6 Qh8 19.Bf7 Bf7 20.Nd2+–) 18.Bg6 (18.Qh7 keeps an even firmer grip 18...Kf8 19.Bg6 Ng6+–) 18...Bg6 (18...hg6 19.Qc1+–) 19.Re1 Kf7 20.Nd2 (20.Nc3 and White can already relax 20...a5+–) 20...Ng8 21.Qe3 (21.Qf4 a5+–) 21...Nf6 22.Nf3 Kf8 (22...Qd7 does not win a prize 23.c5 Ne4 24.Qd4+–) 23.h3 (23.Nd4 makes it even easier for White 23...Qd7+–) 23...Qd7 (23...Kg8 cannot undo what has already been done 24.Qe6 Kh8 25.Nd4+–) 24.Qe6 (better is 24.Qc3 keeps an even firmer grip 24...Qg7 25.Ng5 Kg8+–) 24...Qf7?? a blunder in a bad position (24...Qe6 25.Re6 Ne4+–) 25.Ng5 Qe6 (25...Qg7 does not help much 26.c5! Decoy: c5 26...bc5 27.bc5+–) 26.Ne6 Kf7 (26...Kg8 does not solve anything 27.Nc7 Rd8 28.Re6+–) 27.Nc7 Rc8 28.Nb5 Rc6 29.Rac1 (better is 29.Na7!? might be the shorter path 29...Rc4 30.Nb5 Kf8+–) 29...a6 30.Nd4 Rc8 31.f3 h6 (31...Ne8 is not the saving move 32.Kf2+–) 32.b5 a5 (32...ab5 does not improve anything 33.cb5 Rc1 34.Rc1+–) 33.Nc6 Rc7 (33...Re8 does not save the day 34.Re8 Ne8 35.Re1+–) 34.Nd8 Kg8 35.Re6 Kg7 (35...Rd7 doesn't do any good 36.Rd1 Rd8 37.Rf6+–) 36.Rd6 Kh7 (36...Rc8+– is one last hope) 37.Rf6 1–0. Kuhmann,Heinz (1670) – Wolfram,Franziska, Erlangen op, 2002.

4.e3 a5 5.b5 Nce7 6.a4 b6 7.c4 Bb7 8.f4 ef4 9.ef4 c6 10.Nf3 cb5 11.ab5 Bf3 12.Qf3+/– Ng6 13.Bd3 Bc5 14.Nc3 Qe7? 15.Kd1+– Qd8 16.Qh5 N8e7 17.f5 Kf7 18.fg6 hg6 19.Qf3 Qc7 20.h3 Rae8 21.Rf1 Rhf8 22.Kc2 d6 23.Nd5 Qd8 24.Rae1 Nd5 25.Qd5 Re6 26.Qe6 1–0. amator111 (1690) – forest11he, internet, 2011.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Nc6).

4.e3 Nce7 5.Nh3 (5.d4 ed4 6.Bd4 Nc6+=) 5...d5 6.f4 Bh3 7.Qh5 Ng6 8.Qh3 N8e7?? (8...ef4!? 9.Bd3 N8e7=) 9.fe5 (better 9.f5!?+-) 9...fe5 10.Nc3 (10.Be2 a5+=) 10...Qd7 11.Qd7 Kd7 12.g3 c6 13.Bh3 Kc7 14.0-0 h5 15.Rf7 h4 16.g4 (16.Bf5 hg3 17.hg3 Kd6 18.Bg6 Ng6 19.Rb7 Be7+=) 16...Re8 (16...a5 17.b5+=) 17.Ne2 (17.Raf1 a5+=) 17...Kb8= 18.Raf1 Nc8 19.Kh1 Nd6 20.Rd7 Be7 21.g5 Ne4 (21...Rh5!? 22.d3 Rg5=+) 22.Bf5 Nd2 23.Rd1 (better 23.Rg1 Nf8 24.Be5 Ka8 25.Bg7 Nd7 26.Bd7+=) 23...Bg5?? (better 23...Nc4 24.Bg6 Nb2=+) 24.Bg6+- Be3 25.Be8 Re8 26.Rg7 Ne4? (better 26...Nc4 27.Bc1 Bc1 28.Rc1 Na3+-) 27.Rf1 Nf2 (27...a5 28.Rff7 Ka7 29.Rb7 Ka6 30.Nc3 Nc3 31.Bc3 ab4 32.Rb4+-) 28.Kg2 h3 29.Kg3 Ne4 30.Kh3 Rh8 (30...Kc8 31.Bc1 Bc1 32.Nc1+-) 31.Kg4 (31.Kg2 d4 32.Rff7 Nd6+-) 31...Nf2 32.Rf2! Bf2 33.Be5 Ka8 34.Rf7 Rg8 35.Kf3 Bb6 36.h4 Re8 (36...a5 37.Ng3+-) 37.h5 Re5 (37...a6 38.Bf4 a5+-) 38.Rf8 (38.Rf8 Re8 39.Re8 Bd8 40.Rd8) 1-0. FeegLood (2510) - chessBS_at_Twitch (2320), lichess.org, 2015.

4.e3 Nge7 5.d4 d6 6.c4 Bf5 7.b5 Na5 (7...Nb8 8.Nd2=) 8.c5 (8.Bc3 b6+=) 8...dc5 (better 8...ed4 9.Qa4 b6 10.cd6 Qd6 11.Bd4 c5+=) 9.g4?? (better 9.Qa4!? cd4 10.Qa5 de3 11.fe3=) 9...Be4 (9...Bg6 10.Nf3 cd4 11.ed4 ed4 12.Bd4-/+) 10.Nf3 (better 10.f3 Bb1 11.Rb1 ed4 12.ed4-/+) 10...g5?? (10...Bf3 11.Qf3 cd4 12.ed4 ed4 13.Nd2-+) 11.Bc3?? (better 11.Nbd2 Bf3 12.Qf3 cd4 13.Qf6+=) 11...Nd5?? (11...Nb3 12.Qb3 Bf3 13.de5 Nd5 (13...Bg4? 14.ef6 Ng6 15.Be2+-) 14.ef6 Bh1 (14...Bg4 15.f7 Kf7 16.Bh8+-; 14...Nc3?! 15.f7 Kd7 16.Qc3=) 15.f7 Kf7 16.Bh8 Bg7 17.Bg7 Kg7 18.Qb2 Qf6 19.Qf6 Nf6=) 12.Ba5+- b6 13.Bc3 (better 13.Nc3!? Nc3 14.Bc3 ed4 15.Bb2+-) 13...cd4 (13...Bb1 14.Bb2 Be4 15.de5 Ne3 16.Qd8 Rd8 17.fe3 Bf3 18.Rg1 fe5 19.Be5=+) 14.ed4 ed4 (14...Bb1!? 15.Bb2 Be4=) 15.Bd4+- Qd6?? (15...Qe7 16.Kd2 0-0-0=) 16.Bc4 (16.Nbd2 Bg6 17.Qe2 Be7+-) 16...0-0-0 17.0-0?? (better 17.Nbd2 Bg6 18.h4+-) 17...Qf4 (17...Nf4 18.Nc3 Qd4 19.Be6 (19.Nd4?? Nh3; worse 19.Qd4 Rd4 20.Be6 Kb8 21.Ne4 Re4-/+) 19...Kb7 20.Bf5 (20.Nd4 Nh3; worse 20.Qd4 Bf3 21.Qf4 gf4-/+) 20...Nh3 21.Kg2 Nf4 22.Kg3 Qc3 23.Be4 Kc8 24.Bf5 Kb7 25.Qd8 Ne2 26.Kg2 Nf4 27.Kg1 Ne2 28.Kg2 Nf4 29.Kg1 Ne2 30.Kg2=) 18.Nbd2 Qg4 19.Kh1 Nf4 (19...Nc3 20.Rg1 Qf4 21.Be6 Kb8-/+) 20.Be6?? (better 20.Rg1 Rd4 21.Rg4 Rd2 22.Qb3+-) 20...Ne6 (better 20...Qe6!? 21.Ne4 Qe4 22.Re1-+) 21.Ne4 Qe4 22.Bf6 (22.Re1 Qg4 23.Re6 Qe6 24.Qe1-+) 22...Rd1 23.Rad1 (23.Be5 Qf3 24.Kg1 Ra1 25.Bg3 Nf4 26.Bf4 gf4 27.Ra1 Rg8 28.Kf1 Qd3 29.Ke1 Rg1) 23…Qf3 (23...Qf3 24.Kg1 Nf4 25.Rd8 Kb7 26.Rb8 Kb8 27.Bh8 Ne2) 0-1. pat_cash87 - NathanAug20, lichess.org, 2020.

4.e4 a5 5.b5+= Na7 6.d4 ed4 7.Bd4 c6 (7...Qe7!? 8.Nc3 Nh6+/–) 8.b6+– Nb5 (8...c5 9.Bc5! (9.ba7?! cd4 10.Nf3 d5+=) 9...Bc5 A) 10.ba7 Qb6 (< 10...Ba7 11.Bc4+=) 11.Nh3 d6=+ (11...Ra7?! 12.Bc4=; < 11...Qa7 12.Bc4+=); B) 10.Qh5 g6 11.Qc5+–) 9.Bb5 cb5 10.Qh5 g6 11.Qb5 Bg7 12.Nf3 Ne7 13.0-0 Nc6 (13...0-0 14.Rd1+–) 14.Nc3 0-0 15.Qd5 Kh8 16.Qd6 Nd4 17.Nd4 (17.Qd4 d6 18.Rfd1 Bg4+=) 17...f5 18.e5 Qh4 (18...Re8 19.Rfe1+–) 19.Rad1 Ra6 (19...Re8 20.Nf3 Qh5 21.Nb5+–) 20.Nd5 Re8 (20...Ra8 21.Nc7 Rb8 22.Nce6 de6 23.Qb8+–) 21.Rfe1 (better is 21.Nf3 Qc4 22.Nc7 Rf8+–) 21...Bf8 22.Qf6 1–0. b4_player – creepy_jackalope, GameColony.com, 2002.

4.e4 Nge7 5.c4 b6 6.Nf3 Bb7 7.b5 Na5 8.Nc3 Ng6 9.h4 Bc5 10.d3 (10.h5 Nf4=) 10...0-0 11.g3 a6 12.Qc2 (12.h5 Ne7=) 12...ab5+= 13.cb5 d5 14.Bh3 Ne7 15.h5 Bc8 16.Bc8 Rc8 17.h6 g6 18.Kf1 Qd7 19.Rc1 d4 20.Na4 Bd6 21.Rb1 Rf7 (21...f5!? 22.Kg2 fe4 23.de4 Qe6+=) 22.Bc1 g5 (22...Ra8 23.Kg2=) 23.Kg1 Rcf8 24.Nd2 Qg4 25.Rh2 f5 26.f3 Qg3 27.Rg2 Qh4 28.Rh2 Qf4 29.Rf2 fe4 (better is 29...Rf6+=) 30.Ne4+= Qf5 31.Bg5 (31.Nb6 g4 32.f4 Ng6= (worse is 32...cb6 33.Nd6 Qg6 34.Nf7 Rf7 35.Qc7+–)) 31...Kh8+= 32.Rg2 (32.Nd6?? Qg5 33.Rg2 Qe3 34.Qf2 cd6 35.Qe3 de3 36.Nb6 Nf5–+) 32...Nc8 (32...Nd5 33.Qa2 Nf4 34.Bf4 Qf4 35.Nd6 cd6 36.Qd2=) 33.Bd2 (33.Rg3 Qe6+/–) 33...Qf3 (better is 33...Rg8!? 34.Ba5 ba5+=) 34.Ng5+/– Qf5 35.Nf7 Rf7 36.Bb4 Qh3 37.Re1 Qh6 38.Nb6 Nb6 39.Ba5 Qf8 40.Qc6 Ba3 (40...Rf3 41.Rd1+–) 41.Bb6 (41.Re5 Rf1 42.Kh2 Qf4 43.Rg3 Rf2 44.Qg2 Rg2 (44...Qe5?! 45.Qf2 Bd6 46.Bb4 Qg3 47.Qg3 Bg3 48.Kg3=) 45.Kg2 Qe5–+) 41...cb6 42.Qb6 Bb4 43.Rb1 (43.Re5?? Rf1 44.Kh2 Qf4 45.Rg3 Qh4 46.Kg2 Qh1) 43...Bd6 (43...Rf3 44.Qe6 Rf6 45.Qd5+–) 44.Qc6 Qh6 45.Re1 Qf8 46.b6 Qh6 (46...Rf3+–) 47.b7 Rf8 48.Ree2 Qe6 49.Ref2 Rd8 50.Rc2 h6 (50...Qh6 51.Qf3 Bc5 52.Rc5+–) 51.Qc8 Rc8 52.bc8Q 1–0. condoru (2075) – blake507 (1970), gameknot.com, 2014.

5.c4 d5 6.cd5 Qd5 7.Nc3 Qd4 8.e3 Qd6 9.d4 ed4 10.Ne4 Qe5 11.Qd4 Qd4 12.Bd4 Nf5 13.Bc3 Be6 14.Nf3 Be7 15.Be2 Kd8 16.0-0 Nd6 17.Nc5 b6?? (better is 17...Bg4+/–) 18.Ne6+– (18.Ne6 Kc8 19.Rfc1+–) 1–0. Fournier,Frederic (1795) – championFan, KasparovChess.com unrated blitz gam, 2002.

5.e3 Ng6 6.h4 d5 7.h5 N6e7 8.c4 Be6 9.cd5 Nd5 10.Nf3 Qd7 11.Nc3 0-0-0 12.d4 Nc3 13.Bc3 e4 14.Nd2 f5 15.Bc4 (15.h6 Nf6= (15...gh6?? 16.d5 Bg7 17.de6+-; worse 15...Nh6 16.Rh6 gh6 17.d5+/-)) 15...Nf6 (15...Bc4 16.Nc4 Qb5 17.Ne5=+) 16.Qb3 Bc4 17.Nc4 Nd5 18.a4 (18.Ne5 Qe6 19.Bb4=) 18...Kb8 (better 18...f4!?=+) 19.Ne5+= Qe6 (19...Qe8 20.a5 Rd6 21.a6+/-) 20.a5 (20.Nc6 bc6 21.bc6 Bb4 22.Bb4 Ka8+=) 20...Ka8+= 21.g3 (21.a6!? b6 22.Qc4+/-) 21...Bd6= 22.Nc4 f4 (better 22...Kb8!?=+) 23.gf4+/- (23.Nd6 fe3 (worse 23...Qd6 24.gf4 Rhf8 25.a6+/-) 24.Nb7 ef2 25.Kf2 Qf6 26.Ke1 Qf3 27.Nd8 Qh1 28.Kd2 Qh2 29.Kc1 Rd8-+) 23...Bf4 (23...Kb8 24.Rg1+/-) 24.b6 (24.ef4 Nf4 25.Kd2+/-) 24...cb6? (better 24...Bg5!?+=) 25.ab6 a6 26.ef4 Nf4 27.Nd2 (27.Kd2 Nd3+/-) 27...Qg4 Attacks the isolani on h5 28.Qd1?? (better 28.Qc4 Rd7 29.Rh2+=) 28...Qg2 (better 28...Ng2 29.Kf1 Ne3 30.fe3 Rhf8 31.Nf3 Rf3 32.Ke1 Qg3 33.Kd2 Rf2 34.Qe2 Re2 35.Ke2 Qg2 36.Kd1 Qh1 37.Kc2 Qh5-+) 29.Rf1 Nd3 (29...e3 30.Ra6 ba6 31.Qf3 Qf3 32.Nf3-+) 30.Ke2 Rhf8 (30...Nf4 31.Ke1 e3 32.Ra6 ba6 33.Qf3 Qf3 34.Nf3 Rhe8-+) 31.Nc4?? (better 31.Qb3 Rf2 32.Rf2 Qf2 33.Kd1=+) 31...Rf2 32.Ke3 Rdf8 (32...Qg3 33.Ke4 Nc5 34.dc5 Qf4) 33.Rf2 (33.Ne5 Ne5 34.de5 Qh3 35.Kd4 Rf1 36.Ra6 ba6 37.b7 Kb7 38.Qb3 Ka7 39.Kc5 Rc8 40.Kd6 Qd3 41.Qd5 Rd8 42.Kc6 Qd5 43.Kc7 Qd7) 33...Rf2 (33...Qg5 34.Rf4 Qf4 35.Ke2 Qf2) 34.Ne5-+ Qg3 (better 34...Ne5!? 35.de5 Rf3 36.Kd4 Rd3 37.Qd3 ed3 38.Kd3 Qf3 39.Kd4 Qf2 40.Kd3 Qb6-+) 35.Ke4-/+ Rf4 36.Kd5 Qg2 37.Kd6 Rf6 38.Ke7 (38.Kc7 Qd5 39.Qf1 Qd6 40.Kc8 Qe6 41.Kd8 Qb6 42.Ke8 Qe6 43.Kd8 Ne5 44.de5 Qd5 45.Ke8 Qf7 46.Kd8 Qf8 47.Kd7 Rf1 48.Rf1 Qf1 49.Ke7-+) 38...Qd5 39.Qa4 Qd6 40.Ke8 Rf8 0-1. black_bishop_88 (2545) - Elbayotimpi (2500), lichess.org, 2020. (=1.a3 e5 2.b4 Nc6 3.Bb2 f6)

5.cd5 Qd5 6.Nc3 Qd8 7.e3 Nh6 8.Nf3 Nf5 9.Bc4 Nd6 10.Bd5 Bd7 11.0-0 Qe7 12.Ba2 0-0-0 13.b5 Na5 14.Nd5 Qe8 15.Qc2 Nb5? (better is 15...c6 16.b6 ab6+/–) 16.a4+– Bc6 (16...c5 17.ab5 Bb5 18.Rfc1+–) 17.ab5 Bd5 18.Rfc1 c6 (18...Nc6 19.Bd5 Rd5 20.bc6 Qc6 21.Qf5 Qd7 22.Qb1+–) 19.Bd5 Rd5 20.Ra5 Bc5 (20...Rc5 21.Bc3 Qg6+–) 21.bc6 b6 (21...b5 22.Rb5 Qc6 23.Qb3+–) 22.Ra7 Qc6 23.Rca1 Rdd8 (23...Re8 24.d4 g6 25.dc5 Rc5 26.Qb3+–) 24.d4 ed4 25.Nd4 Qd5 26.Ra8 Kd7 27.R1a7 Ke8 28.Qa4 1–0. aspasio – ccarney, net–chess.com, 2013.

5.cd5 Qd5 6.Nc3 Qf7 7.Nf3 Be6 8.e3 0-0-0 9.Qa4 Bb3 (9...Bb3 10.Qb5 g5+=) 0–1. Fournier,Frederic – Guest999036, Partie amicale, 5m + 5s, 2008.

5.c4 a5 6.b5+= Nb8 (6...Nce7 7.d4 ed4 8.Bd4+=) 7.Nc3 b6 (7...Ne7 8.d4 d6 9.Nf3+/–) 8.Be2+/– Bb7 9.Nf3 Ne7 10.0-0 Nf5 (10...Ng6 11.d4+/–) 11.Qc2 Nh6 12.h3 Bc5 (12...Bd6 13.d4+/–) 13.d4 ed4 14.ed4 Bd6 15.Bd3 (15.Nh4 Kf7+–) 15...Bf3 16.Rfe1 Be7 (16...Kf7 17.gf3 f5 18.c5+/–) 17.gf3 d6?? (better is 17...c6!?+/–) 18.Bh7 (better is 18.Nd5 Kf8+–) 18...Nd7?? (18...c6+–) 19.Bg6 (19.Nd5!? Ne5 20.de5 fe5+–) 19...Kf8 20.Nd5 Ne5 21.de5 de5 22.Ne7 (22.f4 Bd6+–) 22...Qe7 23.a4 (23.f4 Nf7+–) 23...Qd8 (23...Nf7 24.f4! Rh3 25.fe5 fe5 26.Qf5 Qg5 27.Qg5 Ng5 28.Be5+–) 24.Rad1 Qc8 (24...Qe7 25.Qe4 Rb8 26.Qc6+–) 25.c5 (25.Qe4 c5 26.bc6 Nf7 27.Ba3 Kg8+–) 25...Qh3 (25...Nf7 26.Qb3 Qe8 27.f4+–) 26.Qe4 (better is 26.Qb3 c6 27.cb6+–) 26...Ke7 (26...Nf7 27.Qa8 Ke7 28.Qh8 Nh8 29.Be4 bc5 30.Bc3+–) 27.cb6 (27.Be5 Qh1 28.Kh1 Nf7 29.Bh2 Ne5 30.Qd5 Rh2 31.Kh2 Rh8 32.Kg3 Rh3 33.Kh3 bc5 34.Qf7) 27...Rad8 (27...Nf7 28.f4 Nd6+–) 28.Ba3 Ke6 29.Qc4 Rd5 30.Qd5 1–0. GuestMHHR – GuestVQDG, freechess.org, 2017.

5.c4 d5 6.cd5 Qd5 7.Nc3=.

5.c4 d6 6.Bd3 f5 7.f4 e4 8.Be2 Nce7 (8...Nf6 9.Nh3=) 9.Bh5 (better 9.Nh3+=) 9...g6?? (better 9...Ng6=) 10.Bh8 (better 10.Be2 Nf6 11.Bf6 Rg8+-) 10...Be6 (10...gh5 11.Qh5 Ng6 12.Qh7 Nh8 13.Qh8 Be6+-) 11.Be2 Qd7 12.d4 b5 (12...d5 13.c5+-) 13.d5 Nd5 (13...Bf7+-) 14.cd5 Bf7 15.Nc3 Rb8 16.g4 (16.Nh3 Ne7+-) 16...c6 17.dc6 Qc6 18.Rc1 Bc4 (18...Qb7 19.Nh3+-) 19.gf5 Be2 (19...Be7 20.fg6 Bh4 21.Kf1 hg6 22.Bc4 Qc4 23.Kg2+-) 20.Nce2 (20.Nge2 Rb7 21.fg6 hg6+-) 20...Qb6 (20...Qb7 21.fg6 hg6 22.Bb2+-) 21.Bd4 (21.Qb3 d5 22.Be5 Rd8+-) 21...Qd8 (21...Qb7 22.Qb3 d5 23.Be5+-) 22.fg6 hg6 23.Ng3 (23.Qc2 Ne7 24.Qe4 Qd7+-) 23...Rc8 (23...d5 24.f5 Qg5 25.Ba7+-) 24.Nh3 (better 24.Ne4 d5 25.Ng5 Rc4+-) 24...Rc4 (24...d5 25.Ng5 Rc1 26.Qc1+-) 25.Ng5 (better 25.Rc4 bc4 26.Qg4 Qd7 27.Qg6 Qf7 28.Qe4 Qe7 29.Qa8 Qd8 30.Qa6 Qd7+-) 25...Qd7 26.Rc4 bc4 27.N3e4 d5 (27...Be7 28.Nf3 Kf8 29.Rg1+-) 28.Nf6 (28.Qc2 Qc6 29.Nf6 Nf6 30.Qg6 Kd7 31.Bf6 Be7 32.Qf5 Kc7 33.Ne6 Kb6 34.Be7 Qd7+-) 28...Nf6 29.Bf6 a5 (29...Qc6 30.Qd4 Bd6 31.e4 de4 32.Ne4+-) 30.Qc2 Qd6 31.Qg6 Kd7 32.Qf7 Kc6 33.Qe8 Kc7 34.Be5 c3 35.Bd6 Bd6 36.b5 (36.Ne6 Kb6 37.Qd8 Kb5 38.Nd4 Ka6 39.Qc8 Kb6 40.ba5 Ka5 41.Qc6 Bf4 42.Qb5) 36...c2 37.Ne6 Kb6 38.Qc6 Ka7 39.b6 Kb8 40.Qd6 Kb7 (40...Ka8 41.Qc6 Kb8 42.Qc7 Ka8 43.Qc8) 41.Nc5 Ka8 (41...Kc8 42.b7) 42.Qf8 1-0. Williams,Barry – Fleet,Neil, Summer Handicap Wanganui Chess Club NZL, 2000.

5.c4 Qe7 6.Nc3 b6 7.Nd5 Qd6 8.Nf3 Nge7 9.Ne7 Qe7 10.Be2 d6 11.0-0 Qf7 12.Rc1 White prepares c5 12...Be7 13.d4 White plans c5 13...0-0 14.de5 de5 15.c5 Kh8?? (better is 15...bc5 16.Bd3 Kh8=) 16.cb6+– cb6 (16...Qe8 17.b5 Na5 18.bc7 ab5 19.Qd5+–) 17.Rc6 Bb7 (17...b5 18.Qb1+–) 18.Rc7 Bf3 (18...Rfd8 19.Qb1 (19.Rb7?! Rd1 20.Rd1 b5+–) 19...Bd5 20.Nh4+–) 19.Bf3 (worse is 19.gf3 a5+–) 19...Rac8 20.Qc2 Rc7 21.Qc7 Bd8 22.Qf7 Rf7 23.Rd1 Bc7 24.Bb7 a5 25.ba5 ba5 26.a4 h6 27.Ba3 Kh7 (27...f5 28.Rc1+–) 28.Be4 (better is 28.Bd5 Bd6 29.Bd6 Ra7+–) 28...g6 (28...f5 29.Rd7! Rd7 30.Bf5 Kg8 31.Bd7+–) 29.Kf1 (29.Bd5 Rg7 30.Bf8 Rd7 31.Bg8 Kg8 32.Rd7 Kf8 33.Rc7 Ke8+–) 29...f5 (29...Bb6 30.Rb1 Bd8 31.Bd5+–) 30.Bd5 Rg7 31.Bc6 (better is 31.Bf8!? Kh8 32.Bg7 Kg7+–) 31...f4 32.ef4 ef4 33.Rd7 (33.Re1 Bd8+–) 33...Be5 (33...Rd7 34.Bd7 Kg7 35.Bb2 Kf7 36.Ke2+–) 34.Rg7 (34.Rd5!? Bc3+–) 34...Kg7 35.f3 g5 36.Ke2 Kf6 37.Kd3 Ke6 38.Kc4 Bc7 39.Bf8 h5 40.Bh6 g4 41.fg4 hg4 42.Kb5 Ke5 (42...Kf6 43.Bf8+–) 43.Bg7 Kd6 44.Bc3 Bd8 45.Be4 1–0. Fournier,Frederic (1660) – resplandeciente. Active, 2007.

5.Bd3 Bb7 6.Qh5 Ke7 7.Nc3 (7.Bh7 Nb4 8.Qg6 Rh7 9.Qh7 Nc2 10.Qc2 Bg2–+) 7...Nh6 (7...Qe8 8.Qe8 Ke8 9.Nge2+=) 8.Nd5 (8.Be4 g6 9.Qf3 a6+=) 8...Kd6 9.c4 (9.e4 a5+=) 9...Ne7 (9...a5 10.Nf3 g6 11.Qh4+=) 10.Nf3 (10.f4 Nd5 11.fe5 Ke7 12.cd5 f5+–) 10...Nd5 11.cd5 Bd5?? (better is 11...Qe8 12.Qe8 Re8=) 12.Be5!+– fe5 13.Qe5 Kc6 14.Ba6 d6?? (14...b5 15.Qd4 Nf7+–) 15.Nd4 Kd7 16.Qd5 (16.Qd5 Qf6 17.Qc6 Kd8 18.Rc1+–) 1–0. Wall,Bill – Eraca, internet, 2005.

5.Bd3 Nh6 6.Nf3+=.

5.Nf3 a5 6.b5 Nb8? (6...Nce7 7.d4 e4 8.Nfd2+=) 7.c4 (better is 7.Ne5!? g6 8.Qf3+–) 7...c6 8.d4 cb5 9.cb5 Bb7 (better is 9...e4!? 10.Nh4 g6+/–) 10.de5+– fe5 11.Be5 Nc6? (better is 11...Nf6+–) 12.bc6 Bc6 13.Be2 d6 14.Bb2 Qd7 (14...Nf6 15.0-0+–) 15.0-0 0-0-0 (15...Nf6 16.Nd4 Ba4 17.Qd3+–) 16.Nc3 Nf6 17.Rc1 Bf3 1–0. Fournier,Frederic – matic95, internet.com, 2009.

5.Nf3 Be6 6.c4 Nge7 7.Be2 Ng6 8.0-0 Be7 9.d4 ed4 10.Nd4 Nd4 11.Bd4 0-0 12.Nd2 Bf7 13.Nf3 Ne5 14.Ne5 de5 15.Bb2 Qd1 16.Rfd1 Rad8 17.Rd8 Rd8 18.Rd1? (better is 18.Bc3!?=) 18...Rd1–/+ 19.Bd1 Bc4 20.f3 c6 21.e4 Kf7 22.Kf2 h6 23.Ke3 c5 24.Bc3 cb4 25.ab4 b5 26.Be2 Be2 27.Ke2 Bd6 28.Kd3 Ke7 29.h3 Ke6 30.g4 g6 31.Bd2 h5 32.Bc3 hg4 33.hg4 f5 34.gf5 gf5 35.Bd2 fe4 36.Ke4 Bc7 37.Be3 a5 38.ba5 Ba5 39.Bc1 Bc3 40.f4 ef4 41.Kf4 (41.Bf4!? Bf6 42.Bd2–/+) 41...Kd5–+ 42.Ke3 Kc4 43.Ba3 Kb3 44.Bf8 Bb4 45.Kd3?? Bf8 0–1. Fournier,Frederic (1870) – jLondres (1660), Active (4/0), 2004.

5.Nf3 Bf5 6.b5 Nce7 7.Be2 Nh6 8.0-0 Ng6 9.d3 Be7 10.c4 0-0 11.e4 Be6 12.d4 ed4 13.Nd4 Bf7 14.Nc3 Ne5 15.Nd5 c6 16.bc6 bc6 17.Ne7 Qe7 18.f4 (18.Bc1 c5 (18...Nc4? 19.Bh6 gh6 20.Nf5+-) 19.Bh6 cd4+=) 18...c5 (better 18...Nc4!? 19.Bc4 Bc4=+) 19.fe5+/- cd4? (19...Qe5 20.Rb1 cd4 21.Bd4+=) 20.Bd4?? (better 20.ef6 gf6 21.Qd4+-) 20...de5 21.Be3 Rac8 22.c5 Be6 23.Bh6 gh6 (23...Qc5 24.Kh1 gh6 25.Bg4+=) 24.Rc1 (better 24.Qd6!? Qd6 25.cd6+/-) 24...Rc5= 25.Qd2 Rc1 26.Qc1 (worse 26.Rc1 Qa3 27.Qh6 Qb2=+) 26...Qg7 27.Rf3 Kh8 28.Rg3 Qe7 29.Qh6 Qc5 30.Qe3 Qe3 31.Re3 Rb8 32.h3 Rb2 33.Bg4 (33.Kf2!?=) 33...Bg4-/+ 34.hg4 Kg7 35.Kh2 Kg6 36.Kg3 Kg5 37.Rc3 a5 38.Kf3 a4 (better 38...Kh4-/+) 39.g3?? (39.Kg3 Rb5-/+) 39...h5 (better 39...Rb3 40.Re3 Re3 41.Ke3 Kg4-+) 40.gh5-/+ Kh5 (40...Rb3 41.Re3 Kh5 42.Ke2-/+) 41.Rd3 Kg5 42.Rc3 Rb1 (42...Rb3 43.Re3-+) 43.Ke3 (better 43.Ke2!?=+) 43...Kg4-/+ 44.Kd2 Rg1 45.Rc4 Rg3 46.Ra4 Rg2 (better 46...Kf4!?-/+) 47.Ke3 Ra2 48.Ra6 Ra1 49.a4 Re1 50.Kd3 Kf4? (better 50...f5 51.ef5 Kf5=) 51.Rf6+- Kg5? (better 51...Kg4 52.Rf5 Ra1 53.Re5 Ra3 54.Kd2 Ra4+/-) 52.Rf5 Kg6 53.Re5 Kf6 54.Rf5 Ke6 55.Rd5 Ra1 56.a5 Rd1 57.Kc4 Rc1 (57...Re1 58.Kd4+-) 58.Kb5 Rb1 59.Kc6 Rb4 60.a6 Re4 61.Ra5 Rc4 62.Kb5 Rc8 63.a7 Ra8 64.Kb6 Kd7 65.Kb7 Rh8 66.a8Q Ra8 67.Ra8 (67.Ra8 Ke6 68.Ra5 Kd6 69.Rb5 Kd7 70.Rb6 Kd8 71.Rd6 Ke8 72.Kc7 Ke7 73.Kc6 Ke8 74.Re6 Kf8 75.Kd7 Kf7 76.Rd6 Kg8 77.Ke7 Kg7 78.Rf6 Kg8 79.Rg6 Kh8 80.Ke6 Kh7 81.Kf7 Kh8 82.Rh6) 1-0. muhammadaudii (2145) - fwzeapoode12 (2060), lichess.org, 2020.

5.c4 a6 6.d4 ed4 7.ed4 b5 (7...Nh6 8.c5 Bf8 9.Bc4+=) 8.cb5+/– ab5 (8...Qe7 9.Qe2 ab5 10.Qe7 Nce7 11.Bb5+/–) 9.Bb5 Na7 (9...Bb7 10.Nf3+/–) 10.Bc4 (10.Bd3 Bb7 11.Qh5 Kf8+–) 10...Bb7 (10...Qe7 11.Kf1+/–) 11.Qh5 g6 12.Qh3 Ne7 13.Nf3 Nf5 (13...Bd5 14.Nbd2 Bf4+–) 14.0-0 Nc6 15.Nbd2 (15.Re1 Nce7+–) 15...Bf4 16.Rfe1 Nce7 17.Ne4 (17.Qg4!? Bh6+–) 17...Be4 18.Re4 Bd6? (18...Nd6 19.Rf4 Nc4 20.Rf6 Nb2+–) 19.Rae1 Kf8 (19...h5 20.Rg4 Kf8 21.Rge4+–) 20.g4 Ng7 21.Qh6 (better is 21.Qh4 Ng8 22.R4e2 Bf4+–) 21...f5? (21...Ng8 22.Bg8 Kg8 23.d5+–) 22.gf5 (better is 22.d5 Rg8 23.gf5 Nef5 24.Qh7+–) 22...Nef5 23.Re8! Qe8 24.Re8 Re8 25.Ne5?? (better is 25.Qd2+/–) 25...Be5 (better is 25...Nh6 26.Nd7 Ke7 27.Bb5–+) 26.de5?? (26.Qd2 Bf6 27.d5 Bb2 28.Qb2–+) 26...Re5 (better is 26...Nh6 27.a4 Nf7 28.Bf7 Kf7–+) 27.Be5?? (better is 27.Qc1 Re7 28.Bf6+–) 27...d6?? (27...Nh6 28.Bc7 Ke7 29.b5–+) 28.Bc3 (better is 28.Qg5 Ne8 29.Bh8+–) 28...Nh6–+ 29.a4 (29.b5 Nhf5–+) 29...Rg8! 30.a5? (30.Bg8 Ng8 Combination) 30...Ke7 (better is 30...Nf7 31.a6 Nh5–+) 31.Bg8+– Ng8 (31...Ne8 32.b5 c5+–) 32.Bg7 (better is 32.a6 Nf6 33.Bf6 Kf6 34.a7+–) 32...Kd8 33.Kf1 (33.b5 Kc8+/–) 33...Kc8 34.Ke2 Kb8 (34...c6 35.Kd3+=) 35.b5+/– Ne7 36.Bd4 (36.Kd3 c6 37.b6 Kb7+/–) 36...Nf5 37.Kd3 h5 (37...c6!? 38.bc6 Ne7+=) 38.Bf6 c5 (38...Nh6!? 39.h3 c6+/–) 39.Kc4+– Kc7 40.Kd5 Kd7?? (better is 40...h4+–) 41.b6 Ne7 (41...Kc8 42.a6 Kd7+–) 42.Be7 Ke7 43.b7 c4 44.b8Q c3 (44...Kf7 45.a6 g5 46.a7 Kg7 47.a8Q h4 48.Qg8 Kh6 49.Qe6 Kh5 50.Qae8) 45.Qd6 Kf7 46.Qc7 (46.Ke5 g5 47.Qf6 Kg8 48.Qg6 Kf8 49.Ke6 c2 50.Qf7) 46...Kf6+– 47.Qc3 Kg5 (47...Kf7 48.Ke5 g5 49.Qc6 Kg7 50.Qf6 Kg8 51.Qg6 Kf8 52.Kf6 g4 53.Qf7) 48.a6 (48.h4 Kg4 49.Qg3 Kf5 50.Qg5) 48...h4 (48...Kh6 49.a7 h4 50.a8Q Kg5 51.Qd8 Kh5 52.Qe3 Kg4 53.Qdg5) 49.a7 (49.h3 Kh5 50.Qh8 Kg5 51.a7 Kf4 52.Qf6) 49...Kg4 (49...Kh5 50.a8Q Kg5 51.Qd8 Kh5 52.Qe3 Kg4 53.Qdg5) 50.a8Q h3 (50...Kg5 51.Qd8 Kh5 52.Qe3 Kg4 53.Qdg5) 51.Qg3 Kf5 52.Qf8 1–0. GuestNWNG – GuestVHTV, freechess.org, 2017.

5.Nf3 Nge7 6.c4 0-0? (better is 6...e4 7.Nd4 Nd4 8.Bd4 Nc6+=) 7.c5 e4 (7...Bc5 8.bc5 d5 9.d4+–) 8.cd6 ef3 (8...cd6 9.Qb3 Kh8 10.Ng1+–) 9.de7 Qe7 10.Qf3 d6 11.Bc4 Be6 12.Be6 Qe6 13.Nc3 Rae8 (13...Ne5 14.Qe2+–) 14.Qd5 Qd5 15.Nd5 a5 (15...Rf7 16.d4+–) 16.ba5 (16.Nc7 Rc8 17.Nd5 Rfe8+–) 16...Na5 (16...Rf7 17.Bc3+–) 17.Nc7 Rc8 18.Nd5 Nc4 (18...Rc5 19.Nb4+–) 19.Bc3 (19.Ne7 Kf7 20.Nc8 Rc8+–) 19...b5 (19...Rfe8 20.d3 Nb6 21.Nb6 Rc3 22.Kd2+–) 20.Ne7 Kh8 21.Nc8 Rc8 22.Ke2 h6 (22...d5 23.Rhc1 Re8 24.Bb4+–) 23.Rhc1 Nb6 24.Bd4 Rc1 25.Rc1 Nd5 (25...Nc4 26.a4! Na3 27.Bb2+–) 26.Rc8 (26.Rc6 Ne7 27.Rd6 Nf5 28.Rd8 Kh7+–) 26...Kh7 27.Rd8 Ne7 28.Rd6 1–0. Fournier,Frederic – manolope, Active, 2009.

5.d4 ed4 6.Qh5 Ke7 7.ed4+=.

5.d4 e4? 6.c4 (6.Qh5!? Ke7 7.d5 Ne5 8.Be5 fe5 9.Qg5 Nf6+-) 6...d5 (6...d6+-) 7.c5 (better 7.cd5!? Qd5 8.Nc3+-) 7...Nge7 8.Ne2 Nf5 (8...Bg4 9.h3 Be6 10.Nd2=) 9.Nec3+= a6 (9...Nce7 10.Be2+=) 10.Nd2 Be7 (10...Nce7 11.Be2+=) 11.Qc2 (better 11.Qb3 Be6 12.Nde4+-) 11...0-0? (11...Be6!?+=) 12.0-0-0 (12.Nd5 Be6 13.Nc3 Kh8+-) 12...Bd7? (better 12...Be6 13.Nde4! Nh4+-) 13.f4?? (better 13.Nd5 Be6 14.Nc3+-) 13...gf4 (better 13...Ne3 14.Qb3 Nd4-+) 14.ef4?? (better 14.Nd5 fe3 A) 15.Ne7?! Nce7 (worse 15...Nfe7 16.Qb3 Kh8 17.Qe3+-) 16.Bc4 Kg7 17.Ne4 b5=; B) 15.Ne4+-) 14...Nh6?? (better 14...Ne3!? 15.Qb1 Nd1 16.Nd1 f5-+) 15.g4?? (better 15.Nd5 Bg4 16.Ne7 Ne7 17.Re1+-) 15...f5?? (15...Nd4 16.Qb1 Bg4 (worse 16...Ng4 17.Nd5 e3 18.Bd4 ed2 19.Rd2+-) 17.Nd5 Bd1 (worse 17...Qd5 18.Bc4 Ne2 19.Kc2 Nf4 20.Rdf1+=) 18.Qe4 Ndf5=) 16.gf5 (better 16.Nd5 Ng4 17.Ne7 Ne7 18.Qb3 Kh8 19.d5 Nf6 20.Nc4+-) 16...Bf5?? (16...Nd4 17.Qb1 e3 18.Nde4 Nhf5 A) 19.Nd5? e2 20.Re1 A1) 20...ef1N 21.Ne7 Ne7 22.Bd4+- (22.Rhf1?? Nb3 23.Kc2 Ba4-+); A2) 20...ef1B 21.Ne7 Ne7 22.Bd4+-; A3) 20...Nb3 21.Kc2 Nfd4 22.Bd4 A31) 22...ef1Q?? 23.Ne7 (23.Ref1? Nd4 24.Kd3 Nf5 25.Ne7 Qe7-+) 23...Qe7 24.Qb3 (24.Ref1? Nd4 25.Kd3 Bc6 26.Rhg1 Kh8 27.Kd4 Rae8-+) 24...Rf7 25.Rhf1+- (25.Ref1?! Qe4 26.Kc3 Bb5+=); A32) 22...Nd4 23.Kd3 ef1B 24.Ref1 Nf5 25.Ne7 Qe7-+; B) 19.Rg1 Kf7 B1) 20.Nd5 e2 21.Re1 Nb3 (21...ef1B?! 22.Bd4 Be6 23.Ne7 Ke7 24.Bg7=; 21...ef1N 22.Bd4 Be6 23.Nec3+=; 21...ef1Q?! 22.Rgf1 Nb3 23.Kc2-+) 22.Kc2 ef1Q 23.Rgf1 Ba4 24.Ne7 Nc5 25.Kc1 Nb3 26.Kc2 B11) 26...Ke7?! 27.Nc5 Kf7 28.Na4= (28.Nb3? Qd5 29.Bc3 Rfe8-+); B12) 26...Ne7-+; B2) 20.Ng5 Ke8 21.Rd4 Nd4 22.Qh7=+) 17.Rg1 (17.Nd5 e3 18.Rg1 (18.Ne7?! Qe7 19.Bc4 Rf7 20.Bf7 Kf8+-) 18...Kf7 19.Ne4+-) 17...Bg6?? (17...Kh8 18.Qb3 e3 19.Nf3+=) 18.Nde4?? (better 18.Nd5 Bh4 19.Bc4+-) 18...de4 (better 18...Kh8+=) 19.Ne4?? (better 19.Bc4 Rf7 20.Ne4+-) 19...Rf4=+ 20.Rg6? (20.d5 Na7 21.Qc3+-) 20...hg6-/+ 21.d5 Na7 22.Nf6? (22.Ng5 Rf5 23.Ne6=+) 22...Bf6?? (better 22...Kf7 23.Ne4 Nf5-+) 23.Qg6= Kh8 24.Qh6 Kg8 25.Qf4?? (25.Kb1 Bb2 26.Qf4+-) 25...Bg5-+ 26.Bf6 (26.Qg5 Qg5 27.Kb1-+) 26…Bf4 (26...Bf4 27.Kc2 Qf6-+; 26...Bf6? 27.Bh3 Qf8 28.Rf1+-) 0-1. pat_cash87 - Double_e, lichess.org, 2020.

5.Qh5 Ke7 6.b5 d5? 7.bc6+– bc6 8.c4 dc4 9.Bc4 h6 10.d4 Bf5 11.Nf3 e4 12.Nfd2 Rb8 13.Qf7 Kd6 14.Ne4! Be4 15.Qe6 1–0. coloplayah (2000) – autocage, net–chess.com, 2005.

5.d4 ed4 6.ed4 Bd6 7.c4 Bf4 (7...0-0 8.Bd3+=) 8.b5 Na5 9.Qa4 (9.Qe2!? Kf7 10.Qf3 Re8 11.Be2+-) 9...c6+= 10.bc6 (10.Bd3 d5+=) 10...dc6= 11.Bc3 b6?? (11...Bc7 12.Bd3=) 12.c5?? (better 12.Ba5 ba5 13.Qc6 Bd7 14.Qe4 Qe7 15.Qe7 Ke7 16.Bd3+-) 12...Bc7=+ 13.cb6 (13.Be2 b5 14.Qd1 0-0=+) 13...Bb6 (13...ab6 14.Nf3-/+) 14.Nd2 0-0 15.0-0-0 (15.Nc4 Re8 16.Kd2 Nc4 17.Bc4 Kh8 18.Qc6-/+) 15...c5?? (15...Bd7!? 16.Ba5 Ba5=+) 16.Bc4 (better 16.dc5!? Bg4 17.f3+-) 16...Nc4= 17.Qc4 Nf7 18.Ne2 (18.dc5 Bc7=) 18...Qe8 (18...cd4 19.Nd4 Bd7 20.Ne6 Be6 21.Qe6-+) 19.Rdg1? (better 19.Rhe1=) 19...Be6-+ 20.d5 Bf5 (better 20...Bd5 21.Qd5 Qe2-+) 21.f3?? (21.Ng3 Bg6=+) 21...Kh8 (better 21...Nd6 22.Qf4 Qe2 23.Qd6 Rfb8-+) 22.g4? (22.Ng3 Nd6 23.Re1 Nc4 24.Re8 Rfe8 25.Nc4 Bd3 26.Nb6 ab6-+) 22...Bg6?? (better 22...Nd6 23.Qf4 Qe2 24.gf5 Qd3-+) 23.h4?? (better 23.Nf4=) 23...Nd6-+ 24.Qe4 (24.Qf4 Qe2 25.h5-+) 24…Ne4 (24...Ne4 25.fe4 Be4 26.Ne4 Qe4-+; 24...Qe4?! A) 25.Ne4? Ne4 (25...Be4?! 26.fe4 Ne4 27.Rg2-/+) 26.fe4 Be4-+; B) 25.fe4 Be4 26.Ne4 Ne4 27.Rg2-/+) 0-1. pat_cash87 - Adela4582, lichess.org, 2020.

5.Nf3 d6 6.h3 (6.Bb5 Be6+=) 6...Be7 7.Bc4 a6 (7...d5 8.Be2=) 8.d4 (8.Bd5 f5+=) 8...ed4 (8...d5 9.Bd3 e4 10.b5–+) 9.ed4 g5 (9...d5 10.Bd3=) 10.d5 (better is 10.Ng5 fg5 11.Qh5 Kd7 12.Qh6+/–) 10...Na7? (better is 10...Ne5 11.Be2 Nf3 12.Bf3 Rg8+=) 11.Ng5!+– fg5? (better is 11...0-0 12.Ne6 Be6 13.de6 b5+–) 12.Bh8 b5 13.Bd3 Bf6 14.Bf6 Qf6 15.Nd2 g4 (15...Bb7 16.c4+–) 16.hg4 Ng4 17.Nf3 Ne5 18.Qe2 Bg4 19.Rh7 0-0-0 20.Rh6?? Nf3–+ 21.gf3 Qa1 22.Kd2 Bd7 23.Qe3 Qa3?? 24.Qa7= Qb4 25.Ke2 Re8 26.Kf1 Qb1 27.Kg2+= Rg8 28.Rg6 Rg6 29.Bg6 c6 30.Qa6 Kd8 31.Qb6 Ke7 32.dc6 Be6 33.Qb7 Kf6 34.Bd3 b4 35.c7 b3 36.c8Q Bc8 37.Qc8 b2 38.Qf8 Ke5?? 39.Qg7 Kd5?? 40.Qg5 Kc6? (41.Be4 Kd7 42.Qg7 Kd8+–; 40...Ke6+–). maxii – billybass, Live Game Caissa's Web, 2004.

5.ed5 Qd5 6.Nc3 Qd8 7.Qh5 g6 8.Qh4 Nd4 9.Bd3 Bf5 10.Bf5 Nf5 11.Qc4 Nd4 12.Nce2 Ne2 13.Ne2 Qd7 14.d4 0-0-0 15.0-0-0 Bh6 16.Kb1 Ne7 17.de5 Qd1 18.Rd1 Rd1 19.Ka2 fe5?? (better is 19...Rd7 20.ef6 Nd5+–) 20.Be5 c6 21.Qe6 Kd8 22.Bh8 Nd5 (22...Rd7+–) 23.Qg8 Kc7 24.Qh7 Kb6 25.Qh6 Re1 26.Qd2 1–0. pierred (2755) – ccarney (2110), net–chess.com, 2013.

5.ed5 Qd5 6.Nc3 Qf7 7.Bb5 Nge7 8.Nf3 Qg6 (8...Bf5 9.0-0 0-0-0 10.Re1 g5 11.d3 g4=; 8...Be6 9.Qe2 a6 10.Bd3 Ng6 11.Be4 Nf4=) 9.0-0 Bh3 10.Ne1 0-0-0 11.f4 Bf5+=.

5.ed5 Qd5 6.Nc3 Qf7 7.Bd3 A) 7...Be6 A1) 8.Nf3 0-0-0 (8...g5 9.b5 Na5 10.Ne4 h6 11.Nf6 Nf6+/–; 8...Nge7 9.0-0 0-0-0 10.Re1 g5 11.b5 Na5=) 9.0-0 g5 10.Qe1 g4 11.Nh4 Nge7=; A2) 8.Be4 Nge7 9.Nf3 0-0-0 10.0-0 g5 11.Ne2 Rg8+=; A3) 8.Nge2 Qd7 (8...0-0-0 9.f4 ef4 10.Nf4 Ne5 11.0-0 Nd3=; 8...Bd6 9.Ne4 0-0-0 10.0-0 Qd7 11.f4 Nh6=; 8...Nge7 9.f4 0-0-0 10.0-0 ef4 11.Nf4 Ne5=) 9.0-0 0-0-0 10.f4 Be7 11.f5 Bf7=; B) 7...Bd7 B1) 8.Be4 0-0-0 (8...Nge7 9.b5 Na5 10.Qf3 0-0-0 11.d3 Be6=) 9.Nf3 Nge7 10.0-0 g5 11.Qe1 g4+=; B2) 8.Nge2 f5 (8...0-0-0 9.0-0 f5 10.Re1 e4 11.Bb5 Bd6=; 8...Be6 9.f4 0-0-0 10.Ne4 Qd7 11.0-0 f5=) 9.f4 e4 10.Bb5 0-0-0 11.0-0 Nf6=; B3) 8.b5 Na5 9.Qe2 0-0-0 10.Nf3 Be6 11.0-0 Ne7=; B4) 8.Nf3 Nge7 (8...0-0-0 9.0-0 g5 10.b5 Na5 11.Qe2 g4=; 8...g5 9.b5 Na5 10.Qe2 0-0-0 11.Ne4 g4=) 9.Qe2 0-0-0 10.0-0 Bg4 11.Qd1 Qh5=; C) 7...Bd6 C1) 8.Ne4 Be6 (8...Nge7 9.Ne2 Bg4 10.c4 Ng6 11.Qa4 Bf8=; 8...Be7 9.Qe2 Be6 10.Nf3 0-0-0 11.0-0 Nh6=; 8...Nh6 9.Ne2 0-0 10.0-0 Bf5 11.N2g3 Bg4=; 8...Bf8 9.Ne2 f5 10.N4g3 a6 11.b5 ab5=) 9.Nd6 cd6 10.Nf3 Nge7 11.0-0 Ng6=; C2) 8.Nb5 Nge7 (8...Nh6 9.Nf3 Bf5 10.Nd6 cd6 11.Be2 0-0=; 8...a6 9.Nd6 cd6 10.Nf3 d5 11.Be2 Nge7=; 8...Be6 9.Nd6 cd6 10.Nf3 Nge7 11.b5 Na5=; 8...Bf8 9.Bc4 Qe7 10.Qh5 Kd8 11.Ne2 a5=) 9.Nf3 0-0 10.Nd6 cd6 11.0-0 Ng6=; C3) 8.Nf3 Nge7 (8...Be6 9.Be4 Nge7 10.d4 ed4 11.Nd4 Bc4=) 9.Ne4 Ng6 10.Bb5 Nf4 11.0-0 Qg6=; D) 7...Nge7 D1) 8.Nb5 Nd5 (8...Kd8 9.Nf3 a5 10.ba5 Ra5 11.Nc3 f5=; 8...Ng6 9.Qh5 Kd8 10.Nf3 Be6 11.Be4 Bd5=) 9.Be4 Be6 10.c4 Nf4 11.Qf3 Qd7+=; D2) 8.Ne4 Ng6 (8...f5 9.Ng3 Ng6 10.b5 Nce7 11.Be2 f4=) 9.Nc3 Be6 10.Bb5 Qd7 11.Nf3 a6+=; D3) 8.Be4 Be6 (8...Bf5 9.Bf5 Nf5 10.Nf3 0-0-0 11.0-0 Qg6=) 9.Nf3 g5 10.b5 Na5 11.Na4 g4+=; D4) 8.Nf3 Bd7 (8...Bf5 9.Bf5 Nf5 10.0-0 0-0-0 11.Ne4 Qg6=; 8...Be6 9.0-0 0-0-0 10.Re1 g5 11.b5 Na5=) 9.0-0 0-0-0 10.b5 Na5 11.Qe2 Be6=.

5.ed5 Qd5 6.Nc3 Qf7 7.Be2 Bf5 8.Nf3 0-0-0 (8...Bd6 9.0-0 0-0-0 10.Re1 Nge7 11.Nb5 Rhe8=; 8...Nge7 9.0-0 0-0-0 10.Re1 h5 11.b5 Na5=) 9.0-0 g5 10.Re1 Qg6 11.d3 Be6+=.

5.ed5 Qd5 6.Nc3 Qf7 7.Nf3 Be6 (7...Bf5 A) 8.Be2 0-0-0 (8...Bd6 9.0-0 0-0-0 10.Re1 Nge7 11.Nb5 Rhe8=; 8...Nge7 9.0-0 0-0-0 10.Re1 h5 11.d3 h4=) 9.0-0 g5 10.Re1 Qg6 11.d3 Be6+=; B) 8.Rc1 Nge7 (8...0-0-0 9.Be2 g5 10.0-0 Qd7 11.Bb5 a6=; 8...Bd6 9.Bb5 Nge7 10.d4 0-0 11.Qe2 a6=) 9.Bb5 0-0-0 10.0-0 g5 11.d3 g4=; C) 8.Bb5 Nge7 9.0-0 0-0-0 10.Re1 g5 11.d3 g4=) 8.Bb5 (8.b5 Na5 9.Bd3 0-0-0 10.Qe2 g5 11.0-0 g4+=) 8...Nge7 9.0-0 (9.Qe2 a6 10.Bd3 Ng6 11.Be4 Nf4=) 9...0-0-0 10.Ne4 g5 (10...a6 11.Bd3 g5=) 11.Nc5 (11.d3 g4=) 11...g4 (11...Bd5=) 12.Ne1 Bf5 13.f4 Bh6 14.Bc6 Nc6 15.Qe2 Nd4 (15...Bf4? 16.Qb5 Rd6 17.Nb7+–) 16.Bd4 Rd4 (worse is 16...ed4 17.Nb7 Kb7 18.Qb5 Ka8 19.Qf5+/–) 17.Qb5 c6 18.Qa5 Rf4 (worse is 18...Bf4 19.Qa7 Qc7 20.g3 Rd2 21.gf4+–; worse is 18...Rd2 19.Qa7 Qc7 20.fe5 Qe5 21.Qb7 Kd8 22.Nb3+–) 19.Ned3 Rf1 20.Rf1 Bd3 21.Qa7 Qc7 22.cd3 Bd2 23.Ne6 Qb8 24.Qc5 Bg5 25.Ng5 fg5 26.Rf7 Rd8 27.Qb6 (27.Rh7?! Qd6 28.Qd6 Rd6=) 27...g3 28.hg3 h5 29.b5 h4 30.bc6 1–0. Krasny,Henryk Jan – Goncalves,Claudio J, corr TKM/A006, 2000.

5.Bc4 Bf8 +=.

5.d3 Nge7 6.Ne2 Ng6 7.Ng3 (7.h4 Nf8+=) 7...b6 (7...Bf8 8.b5 Nd4 9.Nf5 Nb5 10.Qh5=) 8.h3 (8.c3 0-0+=) 8...Nge7 (8...Bf8 9.b5 Nce7 10.d4=) 9.Nf5 (better is 9.b5!? Nd4 10.c3=) 9...Nf5=+ 10.ef5 Bb7 (10...0-0 11.c3=+) 11.Qh5= Ke7 (11...Kf8 12.c3=) 12.Be2 Qe8 13.f3?? (better is 13.Qf3=) 13...Qh5–+ 14.g4 Qg5 (14...Qh4 15.Kd1–+) 15.Nc3 h5 (better is 15...Nd4!? 16.Ne4 Qe3 17.Bd4 ed4 18.Rf1–+) 16.Nd5 (16.h4 Qh6 17.Ne4 hg4 18.fg4 Nd4 19.Bd4 ed4–+) 16...Kd8 17.Bc1 (17.h4 Qh6 18.g5 fg5 19.Bc1–+) 17...Ne7 (better is 17...Qh4 18.Kd1 hg4 19.fg4 Nd4–+) 18.Bg5 Nd5 19.Bd2 (19.Bh4 Nf4 20.Kd2 a5–+) 19...Bc6 (better is 19...hg4 20.h4 Nf4 21.Bf4 ef4 22.d4–+) 20.Kf2 Ba4 21.c4 Ne7 22.Be3 Kc8?? 23.Rhc1?? Kb7?? 24.Kg2?? hg4 25.fg4 Rh4 26.Bf2 Rh6 27.Bf3? c6–+ 28.b5 Rah8 29.bc6 dc6 30.Rh1 Bc2 31.Ra2 Bd3 32.Rd2 Bc5 33.Rd3 Bf2 34.Kf2 a6?? 35.c5?? bc5?? 36.Ke2?? Kc7 37.Ke3 Rh3 38.Ke2 Rh1 39.Bh1 Rh2 40.Kf3 Rh1 41.Kg2 Rc1 42.Kf2 Rc2 43.Ke3 Ra2 44.Rb3 Nc8 45.Kf3 Kd8 46.g5 Ra1 47.gf6 Rf1 48.Kg2?? Rg1 49.Kh2?? gf6 50.Kh3?? a5 51.Kh4 a4 52.Kh5 Rh1 0–1. Slavisa2 – CharlieChess, Live Game Caissa's Web, 2004.

5.Nf3 a6 6.Be2 +=.

5.Nf3 Nge7 6.Bc4 a6 7.0-0 b5 8.Ba2 Bb7 9.Nc3 (9.c4 bc4 10.Bc4 Nc8+=) 9...Nd4 (9...Ng6 10.d3+=) 10.Nd4+/– ed4 11.Nd5 (11.Nb1 Nc6+/–) 11...Nd5 (11...c6 12.Ne7 Qe7 13.Qg4+/–) 12.Bd5 Bd5 13.ed5 0-0 14.Bd4 Be5 15.Be5 fe5 16.d4 d6 (16...Qg5 17.de5 Rae8 18.d6 Qe5 19.dc7 Qc7 20.Qd3+/–) 17.Qg4 (17.a4 Qh4+/–) 17...Qf6 18.de5 (18.Rae1 ed4 19.Qd7 Qf5 20.Qc7 Rac8 21.Qd6 Rc2+=) 18...de5 (18...Qe5!? 19.Rad1 Rae8+=) 19.Rae1+/– Rae8 20.c4 bc4 (20...Qf4 21.Qf4 ef4 22.c5+–) 21.Qc4 Qd6 22.Qe4 (22.Re2+/–) 22...Rf4 (22...Re7!?+/–) 23.Qf4!+– ef4 24.Re8 Qf8?? (24...Kf7 25.Re4 f3+–) 25.Rf8 Kf8 26.Rc1 Ke7 27.Rc7 Kd6 28.Rg7 1–0. b4_player (2215) – scotraid1, GameColony.com, 2003.

5.Nf3 Bg7 6.d4 ed4 A) 7.Bd3 f5 8.Qe2 (8.ef5 Qe7 9.Kf1 gf5 10.Nbd2 d6 11.b5=) 8...fe4 9.Qe4 Nge7 10.b5 d5 11.Qe2+=; B) 7.Nd4 B1) 7...Nd4 8.Qd4 (8.Bd4 Ne7 9.Bc4 Nc6 10.Bb2 d6 11.0-0+=) 8...Ne7 9.Bc4 Nc6 10.Qd1 d6 11.0-0+=; B2) 7...Nge7 8.Nc6 (8.Nc3 f5 9.Nc6 bc6 10.ef5 Nf5 11.Bd3+=; 8.Bd3 Nd4 9.Bd4 Nc6 10.Bb2 d6 11.f4+=; 8.Be2 Nd4 9.Qd4 d6 10.0-0 Nc6 11.Qd5+=) 8...Nc6 9.Bc4 Ne5 10.Bb3 d6 11.f4+=; B3) 7...Qe7 8.Bd3 (8.Nd2 f5 9.Nc6 dc6 10.Bg7 Qg7 11.Bd3+=) 8...f5 9.Nc6 dc6 10.Bg7 Qg7 11.Nd2+=; C) 7.Be2 C1) 7...Qe7 8.Nbd2 (8.b5 f5 9.bc6 d3 10.Bg7 Qg7 11.e5=) 8...f5 9.ef5 Bf6 10.Rb1 d3 11.cd3+/–; C2) 7...d5 8.ed5 Qd5 9.Nc3 Qd8 10.Nb5 a5 11.Nbd4+=; C3) 7...Nge7 8.Nd4 (8.0-0 d5 9.ed5 Qd5 10.Nd4 Nd4 11.Bd4+=; 8.b5 Ne5 9.Nd4 d5 10.f4 Nf7 11.ed5=) 8...Nd4 9.Qd4 d6 10.0-0 Nc6 11.Qd5+=.

5.Nf3 Bg7 6.d4 Nd4 7.Nd4 ed4 8.Bc4 (8.Bd4 Ne7 9.Bc4 Nc6 10.Bb2 d6 11.0-0+=; 8.Qd4 Ne7 9.Bc4 Nc6 10.Qd5 Qe7 11.0-0+=) 8...f5 9.Bd4 Nf6 10.0-0 fe4 11.Nc3+=.

5.Nf3 Bg7 6.d4 d5 7.ed5 Qd5 8.Nc3 Qd7 9.de5 Ne5 10.Ne5 fe5 11.Qf3+/–.

5.Nf3 Bg7 6.d4 f5 7.ef5 gf5 (7...Qe7!?+/– 8.fg6 ed4 9.Qe2 hg6 10.Nbd2 d6 11.Qe7+/–; 7...Nd4 8.Nd4 ed4 9.Bd4 Qe7 10.Be2 gf5 11.0-0+/–; 7...ed4 8.Qe2 (8.fg6 Qe7 9.Qe2 hg6 10.Nbd2 d6 11.Qe7+/–; 8.Be2 Qe7 9.c3 gf5 10.cd4 d5 11.0-0+/–; 8.b5 Qe7 9.Qe2 Ne5 10.Nd4 gf5 11.Nf5+=) 8...Qe7 9.fg6 hg6 10.Nbd2 d6 11.Qe7+/–) 8.d5+– (8.de5?! Qe7+= 9.Nbd2 Ne5 10.Ne5 Be5 11.Be5+=) 8...Nd4 (8...Nce7 9.Ne5 Nf6 10.d6 Ned5 11.Be2+–) 9.Nd4 (9.Bd4?! ed4 10.Nd4 Qe7 11.Be2 Qe4+=) 9...ed4 10.Qh5 Kf8 11.Qf5 Nf6 12.Bd4 d6 13.Qf4 b6 (13...Qe7 14.Be2+–) 14.Be2 c5 (14...Qe7 15.Nc3+–) 15.dc6 Kf7 16.0-0 Qe7 (16...Rf8+–) 17.Re1 Re8 (17...Kf8 18.Nc3 Qf7 19.Bc4 Qc4 20.Qd6 Kg8 21.Qd8 Bf8 22.Qf6 Qd4 23.Qd4+–) 18.Bf6 Bf6 19.Bc4 Kg6 20.Re7 Re7 21.Qg3 Bg5 (21...Kh6 22.Nc3 Rg7 23.Qd6 Rg6 24.Qf8 Kh5 25.Be2 Bg4 26.Bg4 Rg4 27.Qa8 b5+–) 22.f4 h6 23.fg5 hg5 24.Qd6 Kf5 25.Qe7 Kf4 (25...Be6 26.Qe6 Kf4 27.g3 Kf3 28.Nd2) 26.Nd2 (26.g3 Kf5 27.Bd3 Kg4 28.Qe2 Kh3 29.Qh5) 26...Bf5 (26...Kf5 27.Rf1 Kg6 28.Qf7 Kh6 29.Rf6) 27.g3 Kg4 28.Kg2 (28.Qe2 Kh3 29.Qh5) 28...Rh8 (28...Kh5 29.Qg7 Bh3 30.Kh3 g4 31.Kg2 Rf8 32.Qh7 Kg5 33.Ne4) 29.Be2 1–0. Rosner,Dirk – mkoenig_1, internet, 2001.

4.Nc3 Be6 5.e4 Ne7 6.Nf3 d5 7.d4 de4 8.Ne4 Nbc6? (better is 8...Bd5!? 9.Qe2 f5+=) 9.de5+– fe5 10.Qe2 Ng6 11.Rd1 Bd6 12.c4 Nf4 13.Qc2 (13.Nd6?! cd6 14.Qe4 Qc7+=) 13...0-0? (better is 13...Qb8!?+/–) 14.c5+– a5?! (14...Bd5 15.g3 Nd4 16.Bd4 ed4 17.cd6 cd6 18.Rd4 Rc8+–) 15.cd6 (15.Nd6?! cd6 16.Rd6 Qe8+/–) 15...cd6 16.Rd6 (16.Nd6?! ab4 17.Nb7 Qb6+–) 16...Qe7 17.b5 (17.Ne5?! ab4 18.Rc6 bc6 19.Nc6 Qb7 20.ab4 Bd5+–) 17...Nd8 18.Neg5 g6 (18...Bf5 19.Qb3 Kh8 20.Be5+–) 19.Qd2 Bf5 (19...Rc8 20.Be5 Bg4+–) 20.Be5 Nh5 21.Bc4 Be6 (21...Nf7+–) 22.Re6 (22.Re6 Ne6 23.Be6 Qe6 24.Ne6+–) 1–0. aspasio (2790) – alanwsp (2230), net–chess.com, 2013.

4.c4 Bf5 5.Nc3 c6 6.e3 Nd7 7.Nf3 Nh6 8.h3 c5 9.b5 b6 10.Be2 e4 11.Nh4+/– Ne5? 12.Nf5+– Nf5 13.Ne4 a5 14.a4 d5 15.cd5 Qd5 16.Be5 Qe4? 17.Bf3 Qe5 18.Ba8 Bd6 19.Bc6 Kd8 20.Ra3 Qb2 21.Rd3 c4 22.Rc3 Re8 23.Be8 Ke8 24.0-0 Bb4 25.Rc4 Bc5 26.d4 Bb4 27.Qh5 g6 28.Qh7 Ne7 29.Rfc1 Bd6 30.Qg7 f5 31.Qf6 Bb8 32.Qb6 Kf7 33.Qb8 Qb3 34.Qa7 Qd3 35.Rc7 Qe4 36.Qa5 g5+– 37.Re7! Ke7 38.b6 Kf6+– 39.Qe5! Qe5 40.de5 Ke5 41.b7 f4 42.ef4 Kf4 43.b8Q Kf5 44.g4 Kf6 45.Qd6 Kg7 46.Rc7 Kg8 47.Qd8# 1–0. ISickboyI – crystal palace, ChessWorld.net, 2005.

4.e3 a5 5.b5=.

4.e3 b6 5.Qf3 c6 6.c4 Ne7 7.g3 Be6 8.d3 a6 9.Bg2 d5 10.Nd2 dc4 11.Nc4 Bc4 12.dc4+= a5 13.b5 g6?? 14.Qf6 Bg7 15.Qg7 Rg8 16.Qe5 Qc8 17.a4 Nd7 18.Bc6 Kd8 19.0-0-0 Ra7 20.Qe6 Re8 21.Bf6 Kc7 22.Rd7 Kb8 23.Be5 (23.Be5 Rc7 24.Bc7 Qc7 25.Rc7 Rd8 26.Rb7 Ka8 27.Rd7 Nc6 28.Qc6 Kb8 29.Qb7) 1–0. wlittle (1875) – tbear (1675), net–chess.com, 2001.

4.e3 d5 5.c4 Be6 6.cd5 Bd5 7.Nc3 a6 8.Nf3 Nc6 9.Rc1 Bd6?? 10.Be2 Be6+= 11.0-0 Nge7 12.Ne4 0-0 13.Nd6 cd6 14.d4 e4 15.Nd2 d5 16.Qb3 Qe8? 17.Ne4!+– Qg6 18.Ng3 f5 19.Bd3 Qg5 20.Qc2 f4 21.ef4 Rf4 22.Bh7 Kh8 23.Bd3 Nd4 24.Bd4 Rd4 25.Rce1 Bd7? 26.Qe2?? Re8+/– 27.Qe3 Qf6 28.Qe5?? Rd3–+ 29.Qf6 gf6 30.Nh5 Ng8 31.Re8 Be8 32.Re1 Bh5 33.f3 Bg6 34.Kf2 Ra3 35.Rd1 Bf7 36.Rd4 Rb3 37.Kg3 Kg7 38.h4 Ne7 39.Kf4 Ng6 40.Kf5 Rc3 41.h5 Ne7 42.Kg4 Rc4 43.Rf4 Rf4 44.Kf4 Bh5 45.g4 Bf7 46.Ke3 Nc6 47.b5 ab5 48.Kd2 Ne5 49.Ke3 b4 50.f4 Ng4 51.Kf3 Nh6 52.Ke3 Kg6 53.Kd4 Kf5 54.Ke3 b3 55.Kf3 (55.Kf3 b2 56.Kg2 b1Q 57.Kf2 Ng4 58.Ke2 Qc2 59.Ke1 b5 60.Kf1 Qf2) 1–0. vihavald (1720) – piewcamowy, internet, 2011.

4.e3 Qe7 5.c4 g6 6.a4 (6.Nc3 Be6+=) 6...Bf5 7.d3 (7.Nc3 Na6=) 7...d5 (7...Na6 8.b5 Nc5 9.Nc3=) 8.cd5+= White gets in control 8...Qb4 9.Bc3 Qc5 10.Nf3 (10.e4 Bd7 11.Nf3+=) 10...Qd5 (10...c6!?=) 11.e4+- Be4 12.de4 Qd1 (12...Qe4 13.Be2 Nd7 14.Nbd2+-) 13.Kd1+- Nc6 14.Bb5 0-0-0 15.Ke2 Nce7? (15...Nd4 16.Bd4 ed4 17.Nbd2+-) 16.Bb4 (better 16.Ne5!? Nh6 17.Nf3 Bg7+-) 16...c6 (16...a6 17.Bc4+-) 17.Rc1 a6 (17...Bh6 18.Nbd2+-) 18.Ba5 (18.Bc4 Bh6 19.Rc2 Bf4+-) 18...Rd7 (better 18...ab5 19.Bd8 Kd8 20.ab5 Kc7+-) 19.Ba6?? (better 19.Bc4 Bh6 20.Rc2+-) 19...ba6= 20.Na3 Bh6 (20...Kb8 21.Rab1 Rb7 22.Nc4+-) 21.Rc3 (21.Rcb1 Ra7+-) 21...f5 (21...Rb7 22.Nc4 Kb8 23.Nd6 Rb2 24.Kf1+-) 22.Bb4 (22.Nc4 Rd4 23.Nd4 ed4 24.Rb3 fe4 25.Nd6 Kd7 26.Ne4+-) 22...Nf6 23.Be7 Re7?? (better 23...Ne4 24.Rc6 Kb7 25.Ne5 Re7=) 24.Rc6+- Rc7 25.Rf6 fe4 26.Ne5 (better 26.Nd2 Rd8 27.Ne4+-) 26...Rd8?? (better 26...Bg7 27.Re6 Rc5+-) 27.Nac4 (better 27.Ra6 Rd2 28.Ke1 e3 29.fe3 Rg2+-) 27...Bg7 28.Nb6 (better 28.Rd6!? Re8 29.Rd5 Rc4 30.Nc4 Ba1 31.Nd6 Kd7 32.Ne8 Ke8+-) 28...Kb7 29.Re6 (better 29.Nbd7!? Bf6 30.Nf6+-) 29...Rc2 30.Ke3 Bh6?? (better 30...Be5 31.Re5 Kb6 32.Rb1 Kc7 33.Re7 Kd6 34.Rh7 Ke5 35.Re7 Kf5 36.g4 Kg4+=) 31.f4 (better 31.Ke4 Re2 32.Kf3+-) 31...Rc3?? (31...ef3 32.Kf3 Rc3 33.Ke2 Re3 34.Kf1 Rf8 35.Kg1 Re5 36.Re5 Kb6 37.a5 Kc7+-) 32.Ke4 Bg7 (32...Rb3 33.Nd5 Bf8+-) 33.Nf7 (better 33.Rb1 Be5 34.fe5 Rc2+-) 33...Rcd3 (33...Rd4) 34.Nd8+- Rd8 35.Re7 (better 35.Rb1 Bf8+-) 35...Kb6 36.Rg7 Re8 37.Kf3 h5 (37...Ka5 38.Rh7 Rf8 39.h4+-) 38.Rg6 Ka5 39.h4 Rc8 40.Rg5 Kb4 41.Rh5 Rc3 42.Kg4 Rc4 (42...Rc2 43.g3 Rc8 44.Rh6+-) 43.Re5 (better 43.a5+-) 43...a5 (43...Rc2 44.g3 Rc8 45.Re4 Ka5 46.h5+-) 44.h5 (44.Rb5 Kc3+-) 44...Rc8 45.h6 (45.Rb5 Kc3 46.Rc1 Kd3 47.Rc8 Ke2 48.Re5 Kd1 49.Kf3 Kd2 50.Rd5 Ke1 51.Rc1) 45...Rg8 46.Kh5 Rg2 47.Rg5 (47.h7 Rh2 48.Kg6 Rh7 49.Kh7 Kc3 50.f5 Kd4 51.Rb5 Ke4 52.f6 Kd3 53.f7 Kd2 54.Ra2 Kd3 55.f8Q Ke3 56.Qf2 Kd3 57.Rd2 Ke4 58.Rd4) 47...Rh2 48.Kg6 Kb3 49.h7 Kb2 50.Kg7 (better 50.Rag1 Ka3 51.Rh5 Rd2+-) 50...Ka1 51.h8Q (better 51.f5 Kb2+-) 51...Rh8 52.Kh8 Kb2 (52...Ka2 53.f5 Kb3 54.f6 Kb4 55.Rg4 Kb3 56.f7 Kc2 57.f8Q Kb2 58.Qf2 Kc3 59.Qe3 Kc2 60.Rg2 Kd1 61.Qd2) 53.Ra5 Kc3 54.f5 Kd4 (54...Kb4 55.Ra6 Kb3 56.f6 Kc2 57.Rc6 Kb3 58.f7 Ka2 59.Rb6 Ka1 60.f8Q Ka2 61.a5 Ka1 62.Qa3) 55.f6 Ke3 (55...Ke4 56.f7 Kf3 57.f8Q Ke4 58.Qf5 Ke3 59.Rd5 Ke2 60.Qe6 Kf3 61.Rf5 Kg3 62.Qg6 Kh4 63.Rh5) 56.f7 Kf4 (56...Ke2 57.Re5 Kd2 58.a5 Kc2 59.f8Q Kb3 60.Qf3 Kc4 61.Qf4 Kd3 62.Re3 Kc2 63.Qf2 Kd1 64.Re1) 57.f8Q Ke3 58.Qf5 (58.Re5 Kd3 59.Qf3 Kd4 60.Rd5 Kc4 61.Qd3 Kb4 62.Rb5 Ka4 63.Qb3) 58...Kd4 (58...Kd2 59.Rd5 Kc1 60.Qc8 Kb2 61.Rb5 Ka3 62.Qc3 Ka4 63.Ra5) 59.Rb5 (59.Rd5 Kc3 60.Qd3 Kb2 61.Rb5 Ka2 62.Qc2 Ka3 63.Qb3) 59...Ke3 (59...Kc4 60.Qd5 Kc3 61.Rb3 Kc2 62.Qd3 Kc1 63.Rb1) 60.Qf4! Kf4 61.a5 Ke4 62.a6 Kd3 63.a7 Kd4 (63...Kd2 64.a8Q Ke3 65.Qa3 Ke4 66.Qa4 Kf3 67.Rb3 Ke2 68.Qa2 Ke1 69.Rb1) 64.a8Q Kc4 (64...Ke3 65.Qa3 Ke4 66.Qa4 Kf3 67.Rb3 Ke2 68.Qa2 Ke1 69.Rb1) 65.Qb7 (65.Qd5 Kc3 66.Rb3 Kc2 67.Qd3 Kc1 68.Rb1) 65...Kc3 (65...Kd3 66.Qf3 Kc4 67.Qd5 Kc3 68.Rb3 Kc2 69.Qd3 Kc1 70.Rb1) 66.Qc6 (66.Rd5 Kc4 67.Qc6 Kb4 68.Rb5 Ka3 69.Qa8) 66...Kd4 67.Rd5 Ke3 68.Qe6 Kf4 69.Rf5 Kg4 (69...Kg3 70.Qg6 Kh4 71.Rh5) 70.Qg6 Kh3 (70...Kh4 71.Rh5) 71.Rh5 1-0. SieStein - E9J, lichess.org, 2020.

4.e3 g6 5.Nf3 Bf5 (5...d5 6.Be2=) 6.c4 (6.Be2 d5+=) 6...Bh6 (6...a5 7.d4+=) 7.Nc3 c6 (7...a5 8.d4+=) 8.Be2 (8.d4 Ne7+/–) 8...Nd7 (8...d5 9.d4 e4 10.Nd2+/–) 9.d3 (9.d4 Ne7+/–) 9...Qc7 (9...Ne7 10.0-0+=) 10.0-0 Ne7 11.e4 (11.d4 0-0+=) 11...Be6 12.d4 0-0 13.d5 cd5 (13...Bf7 14.c5 Nc8 15.cd6 Nd6 16.Qd3+=) 14.cd5 (14.ed5 Bf5+/–) 14...Bf7 (14...Bg4 15.Bc1 Bc1 16.Rc1 (worse is 16.Qc1 Bf3 17.Bf3 Rfc8=) 16...Bf3 17.Bf3+=) 15.Nb5 (15.Bc1 Bc1 16.Rc1 f5+=) 15...Qb6 (15...Qb8!?+=) 16.a4+/– a6 (better is 16...Nc8!?+/–) 17.a5+– Qd8 18.Nd6 Bf4 19.Nf7 (better is 19.Bc1 Bc1 20.Rc1 Qb8 21.Nf7 Kf7+–) 19...Rf7 (19...Kf7 20.Qd3 Rc8+–) 20.d6 Nc8 21.Bc4 1–0. Wall,Bill – Kayamike, internet, 1998.

4.e4 a5 5.b5 c6 6.d4 Qb6 7.a4 Nd7 8.Nf3 Ne7 9.Nbd2 Qc7 10.c4 (10.c4 c5 11.d5+=). Muller,Henri (1825) – Valica,Slavo (1630), CO7–01 www.b2–b4.com, 2005.

4.e4 a6 5.Bc4 Ne7 6.Qh5 g6 7.Qf3 Nec6 8.Ne2 Bg7 9.0-0 h5 (9...Nd7 10.Be6+=) 10.Qg3 b5?? (better is 10...g5+=) 11.Qg6+– Kf8 (11...Kd7 12.Qg7 Ne7+–) 12.Qf7 1–0. wampo (1830) – gggrrr (1630), GameColony.com, 2002.

4.e4 b6 5.d4 Bb7 (5...Ne7 6.Nf3+=) 6.Nd2 (6.Bb5 c6 7.Ba4 a5+=) 6...ed4 7.Bd4 Nc6 (7...c5 8.Be3+=) 8.Ngf3 (8.Be3 Nge7+=) 8...Nge7 (8...d5 9.Bd3+=) 9.Bb2 (9.Be3 d5 10.b5 Na5+=) 9...Qd7 10.Be2 Ng6 11.0-0 Be7 (11...Nf4 12.Nd4+=) 12.Bb5 (12.b5 Nce5+=) 12...a6 13.Bc6 (13.Ba4 b5 14.Bb3 a5+=) 13...Qc6 (13...Bc6 14.Nd4+=) 14.Nd4 Qd7 15.f4 (15.Nf5 0-0+=) 15...0-0 16.c4 c5 (16...a5 17.f5 Ne5 18.Ne6+=) 17.Nf5 (17.f5 Ne5 18.Ne6 Rf7+=) 17...Bd8 (17...Rfe8 18.Qg4 Rad8 A) 19.Ne7?! Qe7 20.Rac1 b5= (worse is 20...Be4 21.f5+/–); B) 19.h4+/–) 18.Qg4+/– Rf7 19.h4 Kh8 20.Qh3 Bc7 (20...b5 21.h5 Nf8 22.Qd3 cb4 23.ab4 bc4 A) 24.Qd6?! Bc7 25.Qd7 Rd7= (worse is 25...Nd7 26.Nc4 Be4 27.Nfd6+/–); B) worse is 24.Qc4 d5 25.Qd4 Qe6–/+; C) 24.Nc4 Be4 25.Qe4+/–) 21.h5 Nf8 22.Qd3 Attacks the backward pawn on d6 22...a5 (22...Re8 23.Rad1+=) 23.ba5+/– Ra5 (23...ba5 24.h6 g6 25.Ne3+/–) 24.Rad1 (24.h6 Ne6+/–) 24...Ra4 (24...b5+=) 25.Nf3 (better is 25.h6!? Ne6 26.hg7 Ng7 27.Nh6+/–) 25...Qe6= 26.h6 White gets strong play along the open e–file 26...Be4 27.hg7 Rg7 28.Ng7 Kg7 29.Qc3 (29.Bf6 Kf6 30.Qc3 Ke7+–) 29...Bf3 (better is 29...Rc4!? 30.Ng5 Rc3 31.Ne6 Ne6 32.Bc3 d5=) 30.f5! (worse is 30.gf3 Rc4 31.Qd3 Rf4–/+) 30...Qf7 (30...Qf5 31.Rf3) 31.Rf3 (31.Qf3?! Rc4 32.Rf2 Nd7+=; worse is 31.gf3 Rc4 32.Qd3 Nd7+=) 31...Nd7 32.Rg3 Kh8 33.Qe3 Ra8 (33...Ne5 34.Be5 fe5 35.Qe4+–) 34.Qe6 Threatening mate... how? 34...Rf8 35.Bc1 Qh5 (35...Qe6 36.fe6 Ne5 37.Bh6+–) 36.Re1 Threatening mate: Qxd7 36...Ne5 37.Bf4 Bb8 38.Re4 (38.Rb1 Bc7+–) 38...Qd1 39.Kf2 Qc2 40.Re2 Do you see the mate threat? 40...Qc4 41.Qc4 Nc4 42.Re7 The mate threat is Rgg7 42...Rg8 43.Rg8 Kg8 44.Re8 Kf7 45.Rb8 h5 46.Kg3 d5 47.Kh4 d4 48.Kh5 d3 49.Rb7 Ke8 50.Kg6 d2 51.Bd2! Nd2 52.Kf6 Ne4 (52...Kd8 53.Kg7 Nc4 54.f6+–) 53.Ke6 Ng5 54.Kd5 Kf8 55.Rb6 c4 56.a4 c3 57.a5 c2 1–0. Rosner,Dirk (2180) – Jenneborg,Seved, IECG, 2000.

4.e4 c6 5.d4 (5.Nc3 Be6+=) 5...Nd7 (5...Be6 6.Nf3+=) 6.Bc4 (6.Nf3 Nb6+/–) 6...a5 7.Ba2 (7.Nf3 ab4 8.0-0 Nb6+/–) 7...ab4= 8.ab4 Qb6? (better is 8...d5!? 9.Nd2 Bb4 10.ed5 cd5+=) 9.Bf7!+/– Kf7 10.Ra8 Ne7 (10...Qc7 11.Nd2 d5 12.Ngf3 Bb4 13.0-0 ed4 14.Bd4+/–) 11.Nf3 (11.Ne2 Qc7 12.Nd2 Ng6+–) 11...d5 (11...Qb4!? 12.Bc3 Qc4+/–) 12.0-0+– de4 13.Nfd2 Qb4 (better is 13...Qc7+–) 14.Bc3 Qb5 15.de5 Qd5 16.Ne4! Qe4?! (16...Qd1 17.Rd1 Nb6 18.Nd6 Ke6+–) 17.Re1 (17.Re1 Qf5 18.e6 Kg6 19.Rc8+–) 1–0. rusdin (1940) – marekt (2170), gameknot.com, 2014.

4.e4 Bd7 5.Bc4 Ne7 6.Nc3 Qc8 7.Nf3 Nbc6 8.0-0 Ng6 9.Nd5 Be6 10.Re1 h6 11.Nc7+– Qc7 12.Be6 Nd8 13.Bf5 Nf4 14.d4 d5?? 15.de5+– Nh3 16.Bh3 fe5 17.Be5 Qb6 18.Qd5 Rc8 19.Qd7# 1–0. Grimshaw – aliwood, internet, 2005.

4.e4 Be6 5.Nf3 Ne7 6.c4 Ng6 7.d4 Be7 8.d5 Bf7 9.Be2 0-0 10.0-0 Nd7 11.Nbd2 Nh8 12.g3 g5 (12...Ng6 13.Qa4+=) 13.Re1 Bg6 14.Bf1 h6 (14...f5 15.Qe2=) 15.Bg2 Bh5 (15...f5 16.Qe2 Bf6 17.ef5 Bf5 18.Nf1+=) 16.Qc2 (16.Bh3 f5 17.Bf5 g4+/–) 16...Qe8 17.Rac1 Rc8 18.Nb3 Qg6 19.c5 Nb8 20.cd6 Bd6 21.Nc5 Bc5 22.bc5 Nf7 23.Qb3 Kg7 (better is 23...b6!?+/–) 24.Qb7+– a6 25.Qb4 Bg4 26.h3 Bd7 (26...Bf3 27.Bf3 h5 28.g4+–) 27.c6 Be8 28.Qb7 (better is 28.Qe7+–) 28...Rd8?? (28...Nd6 29.Ne5! Qh7+–) 29.Qc7 h5 (29...Bd7 30.Qa7+–) 30.Qb7 (30.Qb7 Bd7 31.c7+–) 1–0. Fournier,Frederic – NN, jeu.europe–echecs.com (3+0), 2013.

4.e4 g5 5.Qh5 Ke7 6.Bc4 Be6 7.d3 Bc4+= 8.dc4 Nc6 9.Nc3 Qe8 10.Nd5+/– Kd7 11.Qe8 Ke8?? 12.Nc7+– Kd7 13.Na8 b6 14.Ne2 Bh6 15.Rd1 Nge7 16.Nb6! ab6 17.g4 Na7 18.Ng3 Rc8 19.0-0 Rc4 20.Rd2 Nb5 21.Rfd1 Bf8 22.a4 Nd4 23.Bd4 ed4 24.Rd4 Rd4 25.Rd4 Nc6 26.Rc4 Ne5 27.Rc3 Nc6 28.b5 Ne5 29.h3 Ke6 30.Nf5 d5 31.Nd4 Kd7 32.ed5 Bb4 33.Rc6! Nc6 34.dc6 Kd6 35.Nf5 Kc7 36.Ne3 Be7 37.Kg2 h6 38.Nf5 Bf8 39.Kf3 h5 40.gh5 Kd8 41.h6 Ke8 42.h7 Kf7 43.h8Q Bg7 44.Qg7 Ke8 45.Qe7 1–0. redketchuplover (2005) – sbderkach (1665), net–chess.com, 2005.

4.Nf3 b5 5.e3 a6 6.a4 c6 7.ab5+/– cb5 8.c4 Bb7? 9.cb5+/– ab5 10.Bb5 Bc6? 11.Ra8+– Bb5 12.Nc3 Bc6 13.Ra1 Qb6 14.Qb3 Ne7 15.b5 Bf3 16.gf3 Ng6 17.Nd5 Qb7 18.b6 Na6 19.Qb5 Kf7 20.Ra6 Qc8 21.b7 Qc5 22.b8Q Be7 23.Q8b7 (23.Q8b7 Qb5 24.Qb5+–) 1–0. Michas – Rodemund, 2008.

4.Nf3 Nc6 5.e4 a6 (5...f5 6.ef5 Bf5 7.Bb5=) 6.Bc4+= Nh6 (6...f5 7.ef5 Bf5 8.0-0+=) 7.0-0 f5 8.d3 (8.ef5 Bf5 9.Re1 Ne7+=) 8...f4 (8...Be7 9.Bd5+=) 9.Nc3 (9.d4 ed4 10.Nd4 Qf6+/–) 9...Qe7 (9...g5 10.Nd5 g4 11.Ne1+=) 10.Nd5+/– Qd7 (10...Qd8 11.d4 Nf7 12.b5+/–) 11.Ng5 (11.d4 Nf7 12.Qe2+/–) 11...Nd8 (better is 11...Qd8!?+/–) 12.Qh5+– g6? (12...Nhf7 13.d4 (13.Nh7?! f3+/–) 13...ed4 14.Bd4+–) 13.Nf6 Ke7 14.Qh4 Kf6 (14...Qc6+–) 15.Nf7 Kg7 16.Ne5! (16.Ne5 Qe6 17.Ng4 Kf7 18.Qd8 Ng4 19.Qc7 Be7 20.Bh8+–; 16.Nd8? Be7 17.Qf4 Qd8–+; 16.Nh6?! Ne6 17.Be6 Qe6 18.Qf4 Be7+/–; 16.Qh6 Kg8 17.Ne5 d5 18.Nd7 Bh6 19.Bd5 Nf7+–) 1–0. Wall,Bill – Rud,Eugene, internet, 2003.

4.g3 Be6 5.Bg2 d5 6.e4 d4 7.c3 d3 8.Qf3 h5 9.a4 Bg4 10.Qe3 Be6 11.Na3 Bb3 12.a5 Nc6 13.Bf1 Bc2 14.Nc2+– dc2 15.Bd3 Bb4? 16.cb4+– Nb4 17.Bc4 Qd7 18.Bc3 c1Q?! 19.Rc1 Nc6 20.Bb5 0-0-0 21.Bc6 Qc6 22.Bb2 Qb5 23.Bc3?? Nh6?? 24.h3 Rd7 25.Qe2 Qb3 26.Qh5 Nf7 27.Qg4 Qa3 28.Qg7 Qc1–+ 29.Ke2 Rhd8 30.Qg4 Nd6 31.Qg6 Nc4 32.Qf5 Kb8 33.Kf3 Nd2 34.Bd2 Qd2 35.Ne2?? Qd3 36.Kg4 Qe2 37.f3 Rg7 0–1. audrey – cueman, Live Game Caissa's Web, 2004.

5.e3 c6 6.Nf3 a6 7.Be2 Ne7 8.Nc3 Nf5 9.d3 b6 10.0-0 a5 11.Qc2 Nh6 12.h3 g5 13.g4 (13.d4 g4 14.hg4 Bg4+/–) 13...Be7 14.d4 Nf7 (14...f5 15.de5 fg4 16.Nd4+/–) 15.de5 (15.d5!? Bd7 16.dc6 Nc6 17.b5+=) 15...de5 16.Rfd1 Qc7 17.b5 cb5 (better is 17...h5!? 18.Qg6 hg4 19.Ng5 fg5 20.Qe6 gh3+=) 18.cb5 Nd7 19.Rac1 Qd8 20.Qb1 (20.Nd5 Bc5+/–) 20...Rc8 21.Ne4 Nd6?? (better is 21...Rc1 22.Qc1 h5+=) 22.Nd6+– (22.Rd6?! Rc1 23.Qc1 Bd6+–) 22...Bd6 23.Rd6 Rc1 24.Qc1 Qe7 25.Qc8 Qd8 26.Re6 Kf7 27.Qd8 Rd8 28.Rd6 Ke7 29.Rd1 Nc5 30.Rd8 Kd8 31.Bc4 Nb3 32.Bb3 1–0. Fournier,Frederic (1985) – SALMANTINO (1775), Active (5/0), 2004.

5.e3 Nd7 6.Nc3 Nh6 7.Be2 Be7 8.d4 0-0 9.Qc2 Nb6 10.Ne4 c6 (10...f5 11.Nd2=) 11.Nf3 Rc8 (11...Bf5 12.Nfd2+=) 12.0-0 (12.c5 d5 13.Ng3 e4+=) 12...f5 13.Ned2 e4 14.Ne1 d5 15.g3 (15.c5 Nd7=) 15...Qe8 (15...dc4 16.Nc4 Nc4 17.Bc4 Bc4 18.Qc4 Qd5 19.Rc1+=) 16.Ng2 Nd7 17.Nf4 Bf7 18.Qb3 Nf6 19.Rac1 (19.c5 b6=) 19...Qd7 20.cd5 cd5 21.Nb1 Kh8 22.Nc3 a6 23.b5 ab5 24.Bb5 Qd6 25.Be2 Rb8 26.Nb5 Qd7 27.Rc7 Qd8 28.Rfc1 Bd6? (better is 28...Ne8 29.R7c2 Nf6+/–) 29.Nd6+– Qd6 30.a4 Rfc8?? (30...b5 31.Bb5 Qd8+–) 31.Rc8 (31.Rc8 Nfg8 32.Qa3 Qa3 33.Ba3 Rc8 34.Rc8+–) 1–0. Kingston,Zoe – Atkinson,John WH, NZCCA HT corr New Zealand, 1997.

5.c4 a6 6.Nc3 Be7 7.Nf3 d5 8.cd5 Bd5 9.Nd5 Qd5 10.Rc1 Nc6 11.Bc4 Qd6 12.e4 Nd4 (12...Bf8!?+/–) 13.Nd4+– ed4 14.Bb3 (14.Qh5 g6 15.Qd5 0-0-0 16.Bd4 Qd7+–) 14...0-0-0 (better is 14...g6!?+/–) 15.Qg4+– f5 16.Qf5 (16.Qg7?! Bf6 17.Qf7 fe4=) 16...Kb8 17.e5 Qg6 (17...Qh6 18.Rc4+–) 18.Qg6 hg6 19.Rc4 d3 20.Re4 Nh6 21.0-0 Nf5 22.g4 Nh4 23.f4 g5 (23...b5 24.Bd4+–) 24.f5 b6 (24...Rh7+–) 25.f6 gf6 26.ef6 Bd6 27.f7 (27.f7 Ng6 28.Bh8 Nh8 29.Rf5 Nf7 30.Bf7+–) 1–0. pierred (2755) – alanwsp (2230), net–chess.com, 2013.

5.c4 Nc6 6.d4 ed4 7.Bd4 Nd4 8.ed4 =.

5.c4 Nc6 6.d4 d5 7.b5 =.

5.c4 Be7 6.Nc3 Nd7 A) 7.Bd3 Nh6 (7...Nb6 8.Qb3 Nh6 9.Nf3 a5 10.Nd5 ab4 11.0-0 ba3 12.Ra3 Ra3; 7...f5 8.Nf3 Nh6 9.Qb3 0-0 10.0-0 Nb6 11.Be2 c6 12.d4 e4) 8.Nf3 f5 9.Qb3 0-0 10.0-0 Nb6 11.Be2 c6 12.h3 a5; B) 7.Nf3 Nb6 (7...Nh6 8.d4 0-0 9.d5 Bf7 10.Be2 Nb6 11.0-0 c6 12.Rc1 Qd7) 8.Qb3 Nh6 9.Bd3 0-0 10.0-0 f5 11.Be2 c6 12.d4 e4; C) 7.Qb3 Nh6 (7...a5 8.Nf3 Nh6 9.Bd3 Nb6 10.0-0 a4 11.Qa2 0-0 12.Nd5 c6; 7...c6 8.Nf3 Nh6 9.Bd3 Qb6 10.Qc2 f5 11.Be2 0-0 12.0-0 Nf7; 7...Nb6 8.Nf3 Nh6 9.Bd3 a5 10.0-0 a4 11.Qa2 0-0 12.Nd5 c6) 8.Bd3 0-0 9.Nf3 f5 10.0-0 Nb6 11.Be2 c6 12.h3 a5.

5.c4 Be7 6.Nc3 Nh6 7.Nf3 (7.Bd3 Nd7 (7...0-0 8.Nf3 f5 9.0-0 Nd7 10.Be2 c6 11.h3 Nb6 12.Qb3 a5; 7...f5 8.Nge2 0-0 9.0-0 c6 10.f3 Nd7 11.Qc2 Qc7 12.Rfe1 Nb6) 8.Qb3 Nb6 9.Nf3 0-0 10.0-0 f5 11.Be2 c6 12.h3 a5) 7...0-0 (7...Nd7 8.d4 0-0 9.Be2 Nb6 10.d5 Bf7 11.0-0 c6 12.Rc1 Qd7) 8.d4 (8.Bd3 Nd7 9.0-0 Nb6 10.Qb3 f5 11.Be2 c6 12.a4 a5) 8...Nd7 (8...a5 9.Be2 Nf5 10.d5 Bf7 11.e4 Nd4 12.Nd4 ed4) 9.Be2 a6 (9...Nb6 10.d5 Bf7 11.0-0+= c6 12.Rc1 Qd7; 9...Bf7 10.0-0 Nb6 11.Qb3 Nf5 12.de5 de5) 10.0-0 (10.d5 Bf7 11.0-0 Nb6 12.Qd3 Qd7) 10...Qe8 (10...Nb6 11.d5 Bf7 12.Qc2 Qd7) 11.c5 (11.Nd5 Bd8 12.Qc2 c6) 11...Bf7 (11...Rc8 12.Bd3+/– (12.h3 dc5) 12...dc5; 11...dc5 12.bc5 Rd8) 12.Qc2 (12.h3 Rd8) 12...d5 (12...f5 13.de5 Ne5 14.Ne5 de5 15.e4+/–; 12...Be6+/–) 13.e4 c6 14.Rad1 (14.Rfd1 Rd8 15.h3+/–) 14...Bg6 (better is 14...de4!? 15.Ne4 f5+/–) 15.Qb3+– ed4 (15...Bf7 16.ed5 a5 17.Bd3+–) 16.Nd4 Bf7 (16...Bc5 17.bc5 Nc5 18.Qb4 Ne4 19.Ne4 (19.Qb7 Rb8 20.Qc6 Qc6 21.Nc6 Rb2 22.Ne4 de4 23.Bc4 Bf7 24.Ne7 Kh8 25.Bf7 Nf7+=) 19...Be4 20.f3+– (20.Qb7?! Rb8 21.Qa6 Rb2=)) 17.ed5 Bc5 (17...cd5 18.Bc1 Kh8+–) 18.bc5 cd5 19.Na4 Rb8 20.Bf3 (20.Rfe1 b5 21.cb6 Nb6 22.Nb6 Qd8+–) 20...Qc8 (20...b5 21.cb6 Nb6 22.Nb6+–) 21.Rc1 (21.Bd5 Kh8 22.Bf7 Rf7+–) 21...Kh8 (21...Rd8 22.Bd5 Bd5 23.Qd5 Nf7 24.Nf5+–) 22.Bd5 (better is 22.Nb6 Qc7+–) 22...Bg6 (22...Bd5 23.Qd5 Re8 24.Rfd1+–) 23.Ne6 (23.Nb6 Nb6 24.cb6 Qd7+–) 23...Re8 (23...Rf7 24.Nb6 Nb6 25.cb6+–) 24.Nb6 Nb6 25.cb6 Qd7 26.Rc7 Qd6 27.Bc1 Ng4 28.Bf4 Ne5 29.Bg3 Re7 30.f4 Re6 31.Be6 Qd4 32.Kh1 Nc6 33.f5 Be8 34.Rc6! Bc6 35.Bb8 Qd2 36.Qg3 h5 37.Bf4 Qe2 38.Rg1 1–0. Pandurevic,Miro (2250) – Djermic,Ivan (2055), 14th Open, Bosnjaci CRO, 2009.

5.c4 Be7 6.Bd3 A) 6...Nd7 A1) 7.Nf3 Nh6 (7...f5 8.Nc3 Nh6 9.Qb3 0-0 10.0-0 c6 11.Be2 Bf6 12.d4 e4; 7...Nb6 8.Qb3 d5 9.cd5 Qd5 10.Qc2 0-0-0 11.Be4 Qc4 12.Nc3 Nh6) 8.Nc3 f5 9.Be2 0-0 10.0-0 c6 11.h3 Bf6 12.d4 e4; A2) 7.Qh5 Bf7 (7...Kf8 8.Nc3 Nb6 9.Nd5 Nd5 10.cd5 Bd5 11.Ne2 Nh6 12.0-0 Qe8) 8.Qf3 Nh6 9.Nc3 0-0 10.Qe4 f5 11.Qb7 Rb8 12.Qa7 Nb6; A3) 7.Nc3 f5 8.Nf3 Nh6 9.Qb3 0-0 10.0-0 c6 11.Be2 Qb6 12.d4 e4; B) 6...Nh6 B1) 7.Nf3 d5 (7...0-0 8.0-0 Nd7 9.Nc3 Nb6 10.Qb3 f5 11.Be2 c6 12.d4 e4; 7...Nd7 8.Nc3 0-0 9.0-0 Nb6 10.Qb3 f5 11.Be2 Qe8 12.d4 e4; 7...f5 8.Nc3 0-0 9.0-0 Nd7 10.h3 Nb6 11.Qb3 Qe8 12.Be2 Bf6) 8.cd5 Qd5 9.Qc2 Qb3 10.Qb3 Bb3 11.Nc3 Nc6 12.0-0 0-0-0; B2) 7.Nc3 Nd7 (7...0-0 8.Nf3 Nd7 9.h3 Nb6 10.Qb3 f5 11.0-0 Qd7 12.Be2 Bf7) 8.Nf3 0-0 9.0-0 Nb6 10.Qb3 f5 11.Be2 c6 12.d4 e4; C) 6...f5 C1) 7.Nf3 Nf6 8.0-0 0-0 9.Nc3 e4 10.Ng5 Bd7 11.Be2 h6 12.Nh3 Nc6; C2) 7.Nh3 Bf6 (7...Nh6 8.Nc3 0-0 9.0-0 Nd7 10.f3 c6 11.Nf2 Rf6 12.Kh1 Nb6) 8.Nc3 Ne7 9.f4 e4 10.Be2 0-0 11.0-0 Nd7 12.Qb3 c6; C3) 7.Nc3 e4 (7...Nf6 8.Nf3 e4 9.Nd4 Bd7 10.Be2 c5 11.Nb3 0-0 12.0-0 Nc6; 7...Nd7 8.Nf3 Nh6 9.Qb3 0-0 10.0-0 Nb6 11.Be2 c6 12.h3 a5; 7...Bf6 8.Qb3 Ne7 9.Nd5 0-0 10.Nh3 Bd5 11.cd5 e4 12.Bf6 Rf6) 8.Be2 Nc6 9.Nh3 Nf6 10.Nf4 Bd7 11.Qb3 0-0 12.0-0 Rf7.

5.c4 Be7 6.Nf3 A) 6...Nh6 A1) 7.Nc3 Nd7 (7...0-0 8.Bd3 f5 9.0-0 Nd7 10.Qb3 Nb6 11.Be2 c6 12.d4 e4) 8.d4 0-0 9.Be2 Nb6 10.d5 Bf7 11.0-0 Qd7 12.h3 c6; A2) 7.d4 a5 (7...0-0 8.Nc3 Nd7 9.Be2 Nb6 10.d5 Bd7 11.0-0 Qe8 12.a4 a5; 7...e4 8.d5 Bg4 9.h3 Bf3 10.gf3 ef3 11.Nd2 0-0 12.Nf3 Nd7) 8.Nc3 0-0 9.Be2 ab4 10.ab4 Ra1 11.Qa1 Na6 12.b5 Nb4; A3) 7.Bd3 f5 (7...Nd7 8.Nc3 Nb6 9.Qb3 0-0 10.0-0 f5 11.Be2 Qe8 12.d4 e4; 7...0-0 8.Nc3 f5 9.0-0 Nd7 10.Qb3 Nb6 11.Be2 Qe8 12.d4 e4; 7...d5 8.cd5 Qd5 9.Qc2 Qb3 10.Qb3 Bb3 11.Nc3 Nc6 12.Be4 0-0-0) 8.0-0 0-0 9.Nc3 Nd7 10.Qb3 Nb6 11.Be2 Qe8 12.d4 e4; B) 6...Nd7 7.d4 Nh6 8.Nc3 0-0 9.d5 Bf7 10.Be2 Nb6 11.0-0 c6 12.Rc1 Qd7.

5.c4 h6 6.Nf3 Ne7 7.d4 e4 8.d5 (8.Nfd2 f5+/–) 8...Bd7 (8...Bg4 9.h3 Bh5 10.Qa4 Qd7 11.Qd7 Kd7 12.Nfd2+/–) 9.Nfd2 f5 10.f3 ef3 11.Nf3 (worse is 11.gf3 Nd5 12.Qe2 Qh4 13.Qf2 Qf2 14.Kf2 Ne7+=) 11...Ng6 12.Bd3 Ne7 13.0-0 g5?? (better is 13...Rg8+/–) 14.Bh8+– Ng6 15.Bb2 Qe7 16.Nd4 Na6 (16...Qe3 17.Kh1 Kd8 18.Nf5+–) 17.Nd2 (better is 17.Nf5!? Bf5 18.Bf5 Ne5 19.Be5 de5 20.Bg6 Kd8+–) 17...Qe3 18.Kh1 0-0-0 19.Bf5 Nf4 (19...Bf5 20.Nf5 Qe8+–) 20.Bd7 Rd7 21.Nf5 (better is 21.Re1 Nd3 22.Re3 Nf2 23.Kg1 Nd1 24.Rd1 Rf7+–) 21...Qe8 22.Nf3 (better is 22.g3 Nd3 23.Bd4 Rd8+–) 22...g4 (22...Qe4 23.N5d4 Bg7 24.Qe1+–) 23.N3d4 Ng2 (23...Ng6 24.Qg4 Kb8 25.Ne6+–) 24.Kg2 Qe4 25.Kg1 c5 (25...Bg7+–) 26.Ne6 Rf7 27.Qe1 (better is 27.Rf4 Qf4 28.Nf4 Kb8 29.Qg4 cb4+–) 27...Qe1 28.Rae1 h5 29.Nd6! Bd6 30.Rf7 cb4 31.ab4 (31.Be5 Nb8 32.Bd6 Nd7 33.Nc5 Kd8 34.Rd7 Kc8 35.Re8) 31...Bb4 32.Ref1 Bc5 33.Kg2 h4 34.Be5 (34.Rf8 Bf8 35.Rf8 Kd7 36.Bf6 h3 37.Kg3 Nc5 38.Rd8) 34...h3 (34...Bb4 35.Rf8! Bf8 36.Rf8 Kd7 37.Bf6 h3 38.Kg3 Nc5 39.Rd8) 35.Kg3 1–0. Fournier,Frederic (1745) – AntonioAlonso, Active, 2006.

5.d4 ed4 A) 6.Bd4 A1) 6...Nc6 7.Bb5 Nge7 8.Nf3 a5 9.0-0+=; A2) 6...Qd7 7.Nf3 (7.Bd3 Nc6 8.Ne2 d5 9.Nbc3=) 7...a5 8.b5 d5 9.Bd3+=; A3) 6...c5 7.Bc3 Nc6 8.Nh3 d5 9.Nf4+=; B) 6.Qh5 Kd7 (6...Bf7 7.Qb5 Nd7 8.Bd4 Qc8 9.Nf3=) 7.ed4 (7.Bd4 g6 8.Qa5 Nc6 9.Qb5+=) 7...Qe7 8.Ne2 Kc8 9.Nbc3=; C) 6.ed4 C1) 6...d5 7.Bd3 (7.Bb5 c6 8.Bd3 Bd6 9.Nf3=; 7.Nf3 a5 8.ba5 Bf5 9.Be2=) 7...Qe7 8.Ne2 Nd7 9.0-0+=; C2) 6...Qe7 7.Bd3 (7.Bb5 c6 8.Bd3 Nd7 9.Ne2+=; 7.Be2 a5 8.b5 Bc4 9.Nc3+=; 7.Nf3 Nc6 8.Be2 Qf7 9.0-0+=) 7...Nd7 8.Ne2 0-0-0 9.0-0+=.

5.d4 Nd7 A) 6.Bd3 A1) 6...a5 7.c4 (7.b5 d5 8.de5 fe5 9.Nf3=; 7.ba5 c5 8.Bc3 c4 9.Be2=) 7...ed4 8.ed4 d5 9.c5=; A2) 6...d5 7.de5 fe5 8.Nf3 Bd6 9.e4=; B) 6.e4 ed4 7.Bd4 Ne7 8.Bd3 Ne5 9.Ne2=; C) 6.c4 C1) 6...Ne7 7.d5 (7.Nc3 ed4 8.ed4 d5 9.Qe2+=; 7.Bd3 d5 8.cd5 Nd5 9.Nf3=; 7.Nd2 ed4 8.ed4 d5 9.Qe2=) 7...Bf5 8.Nf3 Ng6 9.Be2+=; C2) 6...ed4 7.Bd4 (7.ed4 Qe7 8.Qe2 0-0-0 9.d5=) 7...Ne5 8.Nd2 Nh6 9.Ngf3+=; D) 6.d5 D1) 6...Bf7 7.Be2 (7.Nf3 e4 8.Nd4 Bd5 9.Nc3+=; 7.c4 c6 8.Nc3 f5 9.Nf3+=; 7.e4 a5 8.Nc3 Ne7 9.Nf3+=; 7.Nc3 f5 8.e4 fe4 9.Ne4=) 7...Ne7 8.c4 f5 9.Nf3+=; D2) 6...Bf5 7.Nc3 (7.Nf3 Nh6 8.Be2 Be7 9.Nc3+=; 7.Nd2 c6 8.c4 Bg6 9.Ngf3+=; 7.Ne2 a5 8.Ng3 Bg6 9.Bd3+=) 7...Ne7 8.e4 Bg6 9.Nf3+=.

5.d4 Be7 A) 6.d5 A1) 6...Bf7 7.c4 (7.Nf3 Nh6 8.c4 a5 9.Nc3+=) 7...a5 8.Bd3 ab4 9.ab4+=; A2) 6...Bd7 7.Bc4 (7.Nf3 f5 8.Nbd2 Nf6 9.c4=; 7.Be2 f5 8.Bh5 g6 9.Be2+=; 7.Nc3 f5 8.e4 fe4 9.Ne4=; 7.Bd3 f5 8.Ne2 Bf6 9.Nbc3=) 7...f5 8.Qh5 g6 9.Qe2+=; A3) 6...Bf5 7.Nf3 (7.Nc3 Nh6 8.Nf3 0-0 9.Be2+=; 7.Be2 a5 8.Nf3 ab4 9.ab4+=; 7.Nd2 Bd7 8.Bc4 f5 9.Qh5=; 7.Bc4 Nd7 8.Nc3 Nh6 9.e4+=) 7...Nh6 8.Be2 0-0 9.Nc3+=; B) 6.Qh5 B1) 6...g6 7.Qe2 (7.Qd1 ed4 8.ed4 d5 9.Bd3=; 7.Qf3 c6 8.c4 Nh6 9.e4=) 7...c6 8.e4 Qb6 9.Nf3+=; B2) 6...Kd7 7.Nf3 (7.Qf3 Kc8 8.d5 Bd7 9.Bd3=; 7.Bd3 Kc8 8.d5 Bd7 9.Ne2=) 7...g6 8.Qh4 Kc8 9.Bd3=; C) 6.Bd3 C1) 6...ed4 7.ed4 (7.Qh5 Bf7 8.Qb5 Nd7 9.ed4+=) 7...d5 8.Nf3 a5 9.b5+=; C2) 6...a5 7.Qh5 Bf7 8.Qf3 Ra7 9.b5+=; C3) 6...Nd7 7.Qf3 (7.Nf3 a5 8.0-0 Nb6 9.Nbd2+=) 7...ed4 8.ed4 Qc8 9.c4+=; C4) 6...Nh6 7.Nf3 0-0 8.0-0 a5 9.b5+=; D) 6.Bb5 c6 7.Bd3 Nd7 8.Nf3 a5 9.b5=; E) 6.Nf3 e4 7.d5 Bf7 8.Nd4 Qc8 9.c4+/–.

5.d4 Ne7 A) 6.c4 A1) 6...a5 7.d5 (7.Nf3 e4 8.Nfd2 d5 9.b5=; 7.Qh5 Bf7 8.Qf3 ab4 9.ab4=; 7.Qf3 ab4 8.d5 Bf7 9.ab4=; 7.Bd3 d5 8.de5 dc4 9.Be4=) 7...Bd7 8.Bd3 ab4 9.ab4+=; A2) 6...ed4 7.ed4 (7.Qh5 g6 8.Qf3 Nd7 9.ed4=) 7...d5 8.Nd2 dc4 9.Bc4=; B) 6.Bb5 B1) 6...Nd7 7.Nf3= (7.Ne2 a6 8.Bd3 Nb6 9.0-0=; 7.Nd2 a5 8.Ngf3 ab4 9.ab4=) 7...a6 8.Bd3 Nb6 9.0-0+=; B2) 6...Bd7 7.Bd3 (7.Be2 Ng6 8.Nf3 a5 9.b5+=; 7.Bc4 ed4 8.ed4 Bf5 9.Nf3+=; 7.Bd7 Nd7 8.e4 Nb6 9.Nf3=; 7.de5 de5 8.Bd3 c5 9.Nf3=) 7...Bc6 8.e4 f5 9.Nd2+=; B3) 6...c6 7.Bd3 a5 8.Nf3 ab4 9.ab4=; C) 6.Bd3 a5 (6...Nbc6 7.Nf3 Qd7 8.0-0 ed4 9.ed4+=; 6...ed4 7.ed4 a5 8.ba5 Nbc6 9.Nf3+=) 7.b5 (7.ba5 c5 8.c4 ed4 9.ed4=) 7...c5 8.c4 cd4 9.ed4+=; D) 6.Nd2 D1) 6...Nbc6 7.Ngf3 (7.b5 Nb8 8.Ngf3 a6 9.e4+=) 7...Ng6 8.Bd3 ed4 9.Nd4+=; D2) 6...Nd7 7.Ngf3 a5 8.e4 ab4 9.ab4+=; D3) 6...a5 7.b5 (7.Ngf3 ab4 8.ab4 Ra1 9.Ba1=; 7.c4 ed4 8.ed4 d5 9.c5=; 7.e4 ed4 8.Bd4 Nec6 9.Bb5=) 7...ed4 8.Bd4 d5 9.Bd3+=; D4) 6...Ng6 7.Ngf3 (7.c4 ed4 8.Bd4 Nc6 9.Ngf3=) 7...Nc6 8.Bd3 ed4 9.Nd4+=; D5) 6...ed4 7.Bd4 (7.ed4 Ng6 8.Ngf3 a5 9.ba5=) 7...Nbc6 8.Ngf3 Qd7 9.Bd3+=; E) 6.e4 ed4 7.Bd4 Nbc6 8.Nf3 d5 9.ed5=; F) 6.Nc3 ed4 (6...d5 7.de5 fe5 8.Nf3 Nd7 9.Be2+=) 7.ed4 d5 8.Bd3 Nbc6 9.Nge2+=.

5.Nf3 d5 =.

5.Nf3 Ne7 6.g3 (6.Be2 d5=) 6...Qd7 7.h3 g6 8.Bg2 c6 9.Nc3 Bg7 10.d4 ed4 (10...0-0 11.e4=) 11.Nd4 Bc4 12.Qg4 d5 13.Ne6 Rg8 14.Ng7 Rg7 15.Qd4 Qe6 16.Ne2 Be2 (16...Nd7!?+=) 17.Qf6+/– (17.Ke2?! Nd7=) 17...Qf6 18.Bf6 Rf7 19.Be7 Re7 20.Ke2 Nd7 21.Rhd1 0-0-0 22.b5! Ne5 (22...cb5 23.Rd5 Deflection) 23.bc6 bc6 24.Rab1 Rf8 25.Rd4 Ref7 26.Rf4 (26.f4!? Nc4 27.Rc4 dc4 28.Rb4+/–) 26...Rf4+= 27.gf4 Nc4 28.Rb3 Kc7 29.Bf1 Rb8 30.Rb8 Kb8 31.a4 Nb6 (31...a5!?=) 32.a5+/– Nc4 33.a6 Kc7 34.Kd3 Kb6 35.Kd4 Na3? (35...Nd2 36.Be2+=) 36.c3 (better is 36.Bd3!?+–) 36...Nb5+/– 37.Bb5 Kb5 38.f3 Ka6 39.e4 Kb6 40.c4 (40.ed5 a5 41.d6+–) 40...a5?? (40...dc4 41.Kc4 Kc7+=) 41.cd5+– a4? (better is 41...Kc7+–) 42.dc6 1–0. Krikunov,Viktor (2210) – Evdokimov,Alexei (2275), Anapa op, 2007.

6.Nc3 d5 7.cd5 Nd5 8.Nd5 Bd5 9.d4 =.

6.d4 ed4 7.Bd4 Nbc6 =.

7.d4 Nbc6 =.

7.e4 Nbc6 8.Nf3 =.

7.e4 Nd7 8.Qb3 Nc6 9.Nf3 =.

7.e4 Nd7 8.Qb3 h5 9.Nf3 h4 10.Bd3 h3 11.g3 Rh5 12.0-0+= g6 13.Rae1 Bg4 14.Re3?? Bh6–/+ 15.Be2 Be3 16.fe3 f5 17.Qd1 fe4 18.Ne4 Rf5 19.Nfg5 Rf1 20.Kf1 Bf5 21.Bg4 Be4 22.Ne4 b5 23.cb5= d5 24.Ng5 a6 25.Ne6 Qc8?? 26.Bh3 ab5 27.Qg4 Ra6 28.Ng7 Kf7 29.Qd7+/– Rf6 30.Kg2 Qd7+= 31.Bd7 Kg7 32.Be5 c6 33.g4 Kf7 34.Bf6 Kf6 35.h4 g5 36.h5 Kg7 37.d4 Kh6 38.Kf3 Kg7 39.e4 de4 40.Ke4 Kf6 41.Be8 Kg7 42.Ke5 Nd5 43.Bc6 Nc3 44.d5 Kf7 45.d6 Nb1 46.Bb5 Nd2 47.d7 Ke7 48.h6 Nf3 49.Kf5 Nh4 50.Kg5 Nf3 51.Kf4 Nh4 52.a4 Ng6 53.Ke4 Nf8 54.a5 Nh7 55.a6 Nf6 56.Kf5 Ne4 57.Ke4 Kf7 58.h7 Kg7 59.d8Q Kh7 60.g5 Kg6 61.Be2 Kg7 62.Kf5 Kh7 63.Qe7 Kg8 64.g6 Kh8 65.Qf8# 1–0. NN – SuperForte, 1994.

7.e4 Nd7 8.Nf3 Nb6 9.Nd5 c6 10.Nb6 Qb6 +=.

7.e4 Nd7 8.Nf3 Nc6 =.

6.c4 ed4 7.Qd4 (7.Bd4 c5 8.Bc3 d5 9.bc5=; 7.ed4 Qe7 8.Qe2 Nd7 9.Nf3=) 7...Nd7 8.Nf3 a5 9.Be2+=.

6.Nd2 Nd7 (6...a5 7.b5 Qb6 8.c4 Nd7 9.bc6+=; 6...Be7 7.Bd3 a5 8.Qh5 Bf7 9.Qg4+=; 6...Nh6 7.Ngf3 (7.Bd3 a5 8.Ngf3 ab4 9.ab4+=; 7.c4 a5 8.Ngf3 Nd7 9.Bc3+=) 7...a5 8.Bd3 ab4 9.ab4+=; 6...Ne7 7.Ngf3 (7.Bd3 a5 8.c4 ed4 9.ed4=; 7.c4 a5 8.Bd3 ed4 9.ed4=) 7...Nd7 8.Bd3 a5 9.c4+=; 6...Qb6 7.c4 (7.Bd3 a5 8.Qh5 Bf7 9.Qg4=; 7.Ngf3 a5 8.Bc3 ab4 9.ab4=; 7.e4 ed4 8.Rb1 Ba2 9.Nc4+=; 7.Be2 a5 8.Bh5 g6 9.Bg4=) 7...a5 8.Qa4 Na6 9.Qa5+=; 6...ed4 7.Bd4 (7.ed4 Qe7 8.Be2 g5 9.c4+=) 7...a5 8.Ne2 ab4 9.Nf4+=) 7.Ngf3 (7.c4 a5 8.e4 d5 9.ed5=) 7...d5 (7...Nb6!?+= 8.c3 Ne7 9.Bd3+=) 8.de5+/– fe5 9.Ne5 Ne5 10.Be5 Nf6 11.c4 (11.Be2 Bd6 12.Nf3 0-0+/–) 11...Bd6 12.Bd4 0-0 13.c5 Be7 (13...Bc7 14.Bd3+/–) 14.Bd3 Qc7 (14...Qe8 15.0-0+/–) 15.Qc2 Bg4 (15...Rae8 16.Bf6 Bf6 17.Bh7 Kh8 18.Rb1+/–) 16.h3+– Bh5 (16...Bd7 17.0-0+–) 17.g4 Ne4?? (17...Bf7+–) 18.Be4 (worse is 18.gh5 Nd2 19.Qd2 Bf6+–) 18...Bh4 (18...de4 19.gh5 Rad8+–) 19.Bh7 Kh8 20.gh5 Bf2 21.Ke2 Qf7 (21...Bg3 22.Qg6 Rf2 23.Kd3+–) 22.Bg6 Qc7 (22...Qe7 23.h6 Rf6 24.hg7 Qg7 25.Bf6 Qf6 26.Raf1+–) 23.h6 Qe7 24.hg7 Qg7 25.Qc3 (25.Qc3 Rg8 26.Raf1+–) 1–0. Aymard,Michel (2010) – Hanamitsu,Itsurou (1810), corr ICCF WSTT/3/06/3, 2006.

6.Bd3 A) 6...Nd7+= 7.Nf3 a5 8.b5 Nb6 9.Qe2+=; B) 6...Qb6 7.c4 (7.Qh5 Bf7 8.Qe2 Nd7 9.Nf3+=; 7.Nf3 a5 8.c3 Nd7 9.0-0+=) 7...a5 8.Qa4 Ne7 9.Nf3+=; C) 6...a5 7.b5 Ne7 8.Nf3 Nd7 9.0-0+=.

6.e4 A) 6...a5 7.b5 (7.d5 Bf7 8.b5 Ne7 9.c4=; 7.Nf3 ab4 8.d5 Bf7 9.ab4=) 7...Qb6 8.Nf3 Nd7 9.d5+=; B) 6...Ne7 7.c4 (7.Nf3 Nd7 8.c4 a5 9.d5+=; 7.Bd3 Nd7 8.Nf3 a5 9.0-0+=; 7.Nd2 Nd7 8.Ngf3 Ng6 9.Be2+=) 7...ed4 8.Bd4 Qc7 9.Nf3+=; C) 6...Nd7 7.d5 (7.Nf3 Nb6 8.Bd3 Ne7 9.0-0+=; 7.c4 ed4 8.Bd4 Ne5 9.Nd2+=; 7.Bd3 a5 8.Nf3 ab4 9.ab4=) 7...cd5 8.ed5 Bf7 9.c4+=; D) 6...ed4 7.Bd4 (7.Qd4 c5 8.Qd3 d5 9.Qb5=) 7...a5 8.b5 d5 9.ed5+=; E) 6...Qb6 7.Nf3 (7.c4 a5 8.b5 Nd7 9.d5+=; 7.d5 Bd7 8.Bc1 a5 9.Be3+=) 7...Nd7 8.d5 Bf7 9.Nc3+=; F) 6...Nh6 7.d5 (7.Nf3 a5 8.b5 Be7 9.Bd3+=; 7.c4 ed4 8.Bd4 a5 9.b5=) 7...cd5 8.ed5 Bf7 9.Nf3+=; G) 6...Be7 7.Bd3 (7.Nf3 Nd7 8.Bd3 Qb6 9.Nc3+=; 7.d5 Bd7 8.dc6 bc6 9.Nc3=; 7.Qh5 g6 8.Qd1 a5 9.b5=; 7.c4 ed4 8.Bd4 a5 9.b5+=) 7...Qb6 8.Nf3 Nd7 9.Nc3+=.

6.de5 fe5 7.Be5?? (better 7.Nf3=) 7...de5-+ 8.Qh5 Bf7 9.Qe5 Qe7 10.Nf3 Qe5 11.Ne5 Bd6 12.Nf7 Kf7 13.Bc4 Ke8 14.Nd2 Nf6 15.0-0 (15.Rd1 b5 16.Be2 a5-/+) 15...Nbd7 16.Rfd1 Kd8 17.Nf3 Kc7 18.Ng5 Ne5 (18...Be5!? 19.Rab1 Nb6=+) 19.Ne6 Kd7 20.Nc5? (better 20.Bb3 Ne8 21.f4+=) 20...Ke7-+ 21.Bb3 Bc5 22.bc5 Rhd8 23.Rd4 Ned7 24.Rc4 h6 25.Rb1 Rab8 26.Ba4 Ne5 27.Rcb4 Rd7 (better 27...a5!? 28.Rb7 Rb7 29.Rb7 Rd7 30.Rd7 Nfd7-+ (worse 30...Ned7 31.Bc6 Nc5 32.Kf1-/+)) 28.f4=+ Neg4 (28...a5 29.fe5 ab4 30.ef6 gf6 31.ab4=+) 29.Bc6= Rc7 30.Bf3 Rc5 (worse 30...Ne3 31.Re1 Rc5 32.Re3 Kf7 33.c4+/-) 31.h3 (worse 31.Rb7 Rb7 32.Rb7 Kf8 33.Rb8 Kf7=+) 31...Rc2? (31...Ne3 32.Re1+/-) 32.hg4 (better 32.Rb7!? Rb7 33.Rb7 Kf8 34.hg4+-) 32...b6+/- 33.g5 hg5 34.fg5 Nd7 35.Re4 Kf7 36.Rd1 (36.Rf1 Kg6 37.Re6 Kf5 38.Re7+-) 36...Nc5+= 37.Re5 Re8?? (better 37...a6+=) 38.g6! Kf8 (38...Kg6 39.Bh5 Double attack (39.Re8 Deflection)) 39.Rf5 Ke7 40.Rf7 Ke6 41.Bd5 (41.Rg7 Rc3 42.Ra7 Re3 43.Bd5 Ke5+-; 41.Ra7?! Kf6 42.Rd6 Re6 43.Re6 Ne6+/-) 41...Ke5 42.Rg7 (better 42.g4!? Rc1 43.Rf5 Kd6 44.Rc1 Re3+-) 42...Rc3 (42...Ne4 43.Be4 Ke4 44.Ra7 Ke3 45.Re1 Re2 46.Rb1+-) 43.Rf7 (better 43.Ra7 Ne6 44.g7 Ng7 45.Rg7 Ra3 46.Rb7+-) 43...Re3 (43...Ne4+-) 44.g7 (44.Ra7?! Rg3 45.Re1 Kd5 46.Re8 Rg6+-) 44...Rg3 (44...Rg8 45.Re7 Kd6 46.Re3 Rg7 47.Bf7 Kc7 48.Re7 Kc8 49.Ra7+-) 45.Rf8 (better 45.Re1!? Kd5 46.Re8 a6+-) 45...Rd8 46.Rd8 (46.Rd8 Rg7 47.Re1 Kf5 48.Re3+-) 1-0. muhammadaudii (2125) - Mobelalo (2145), lichess.org, 2020.

5.d4 Nh6 6.de5 de5 7.Nf3 (7.Qd8!? Bd8 8.Bd3=) 7...Qd1=+ 8.Kd1 Be6 9.Bd3 Ng4 10.h3?? (better 10.Ke1=+) 10...Nf2-+ 11.Ke2 Nh1 12.Nbd2 Ng3 13.Kf2 Nf5 14.g4 Nd6 15.c4 Nc6 16.c5 Nf7 17.Bb5 0-0 (17...h5 18.gh5 Rh5 19.Bc6 bc6 20.h4-+) 18.Bc6 bc6 19.Nh4 Rfd8 20.Nhf3 Ng5 21.h4 (21.Kg3 Nf3 22.Nf3 Rd3-+) 21...Nf3 22.Nf3 Bg4 0-1. muhammadaudii (2160) - Mobelalo (2145), lichess.org, 2020.

5.Nh3 Be6 6.f4 Qd7 7.Nc3 Nh6 8.Qh5 Bf7 9.Qf3 Nf5?? (better 9...d5=) 10.Qb7+- Qc6 (10...0-0 11.Qa8 c6+-) 11.Bb5 a6 12.Bc6 Nc6 13.Qc6 Kf8 14.Qa8 Be8 15.fe5 Kf7 16.0-0 (16.Qd5!? Kf8 17.ef6 Bf6 18.Qf5 h5+-) 16...de5 17.Qd5 (17.Rf5 Bd6+-) 17...Kf8 18.Rf5 Bf7 19.Qd7 g6 20.Rff1 (20.Nd5 Kg7 21.Qe7 Rg8 22.Qf6 Kh6 23.Be5 Bd5 24.Qg5) 20...Kg7 21.Qe7 Re8 (21...Rd8 22.Qf6 Kg8 23.Qf7 Kh8 24.Ng5 Rd2 25.Qh7) 22.Qf6 Kg8 (22...Kh6 23.Rf5 Bc4 24.Rh5 Kh5 25.Qg5) 23.Qf7 Kh8 24.Qe8 Kg7 25.Qf8 1-0. FeegLood (2695) - Uliui (1805), lichess.org, 2015.

5.c4 Bf5 6.d4 =.

5.c4 g5 6.d3 Bg7 7.Nf3 0-0 8.h3 Nd7 9.Nbd2 Ng6 10.Be2 Re8 11.0-0 Rf8 12.e4 Nb6 (12...f5 13.ef5 Rf5 14.d4+=) 13.Nb3 (13.c5 dc5 14.bc5 Nd7+/–) 13...Bd7 14.d4 c6 (14...Na4 15.Bc1+=) 15.Qc2 (15.Na5 Qc7+/–) 15...Nc8 (15...f5 16.de5 g4 17.hg4 fg4 18.Nh2 Ne5 19.c5=) 16.Rad1 b6 17.de5 de5 18.c5 bc5?? (better is 18...b5+/–) 19.Nc5+– Nce7 (19...Rf7 20.Bc4 Nb6 21.Nd7 Nc4 22.Qc4 Qc7+–) 20.Nd7 Qd7 (20...Kh8+–) 21.Rd7 Rad8 22.Rd8 (22.Bc4!? Kh8 23.Ra7 h6+–) 22...Rd8 23.Rd1 Rd1 24.Qd1 a6 25.Qd8 (25.Qd8 Bf8 26.Bc4 Kg7 27.Qe8+–) 1–0. Fournier,Frederic (2040) – Chicot,Patricia (1640), Active Blind, 2007.

5.Bc4 d5 6.Be2=.

5.Bc4 g6 6.h4 (6.e4 d5 7.ed5 Nd5=) 6...d5 7.Bb3 Bg7 8.h5 g5 (8...a5!?=) 9.h6+= Bf8 10.c4 (10.f4 Ng6 11.Qh5 ef4 12.ef4 Rg8+/-) 10...c6 (10...dc4 11.Bc4 Bf5 12.d4+=) 11.cd5 cd5 (11...Nd5 12.Qh5 Ke7 13.f4 gf4 14.e4+/-) 12.Nc3 (12.d4 Nbc6+/-) 12...Nbc6 (12...Be6!?+=) 13.Qh5+/- Ng6 14.Bd5 (14.Nd5 Be6 15.e4 Bd6+/-) 14...Nce7 15.Bb3 Bf5 (15...Nf5 16.Nd5 Nh6 17.Qf3+/-) 16.g4 (16.e4 Bd7+/-) 16...Bd3 17.Nf3 (17.f4 gf4 18.ef4 ef4 19.Ba4 Nc6+-) 17...Qd7 18.Rc1 Rc8 19.Kd1 b5 20.Ne1 Bc4 21.Bc4 Rc4 22.d3 Rc8 (22...Ng8 23.Ke2 Rc6 24.Rd1+=) 23.Ne4 Rc1 24.Kc1 Qc6 25.Kb1 Nd5 26.Nf3 Kf7?? (26...a5 27.Neg5 Qb7 28.Ne5 fe5 29.Be5 Rg8+/-) 27.Rc1 Qd7 (27...Qb7 28.Be5! Be7 29.Neg5 Kg8 30.Ne4+-) 28.Be5! Be7 (28...fe5 29.Ne5 Double attack) 29.Neg5! fg5?? (29...Kg8 30.Ne4 fe5 31.Ne5 Qe6+-) 30.Bh8 Bf6 (30...Kg8 31.Bd4 Nf6+-) 31.Bf6 Nf6 (31...Kf6 32.Qg5 Ke6 33.Rc6 Qc6 34.Nd4 Kd6 35.Nc6 Kc6 36.Qg6 hg6 37.h7+-) 32.Ne5 Ke6 (32...Ke7 33.Nd7 Nh5 34.gh5+-) 33.Nd7 Nh5 34.gh5 Ne5 35.Ne5 Ke5 36.Rc7 Kd6 37.Rh7 g4 38.Rg7 Ke6 39.Rg4 (39.h7 a5 40.h8Q Kf5 41.Qh6 g3 42.Rg5) 39...Kf6 (39...a6 40.h7 Ke5 41.h8Q Ke6 42.Qh6 Ke7 43.Rg7 Ke8 44.Qh8) 40.Rg7 (40.h7 Ke6 41.Rg6 Kd7 42.h8Q a6 43.Qh7 Ke8 44.Rg8) 40...Kf5 (40...Ke6 41.h7 a6 42.h8Q Kf5 43.Qh6 a5 44.Rg5) 41.h7 Ke5 (41...a5 42.h8Q ab4 43.Qh6 ba3 44.Rg5) 42.h8Q Kd5 (42...Kf5 43.Qh6 a5 44.Rg5) 43.Qc8 (43.Qh6 a5 44.Rg5) 43...Ke5 44.Rg6 (44.Rg6 a5 45.Qe6; 44.Qc5 Kf6 45.Qe7 Kf5 46.Rg5) 1-0. FeegLood (2830) - igotu (2405), lichess.org, 2016.

5.d3 Be6 6.c4 d5 7.Nf3 dc4 8.dc4 Qd1 9.Kd1 Nd7 10.Be2 (10.Kc2 a5 11.Nbd2 ab4 12.ab4 Ra1 13.Ba1 Nc6=) 10...0-0-0 (10...a5 11.Kc2 ab4 12.ab4 Ra1 13.Ba1=+) 11.Kc2= Nb6 12.Nbd2 c5 (12...Na4 13.Rad1=) 13.b5 (13.Kb3 Bf5 14.Rad1 a6=) 13...Na4 14.Rad1 (14.Bc1 Nf5=) 14...Nb2 15.Kb2 Rd7 (15...Nf5 16.Ne4=) 16.Ne4 Nf5 (16...b6 17.Rd7 Kd7 18.Rd1 Kc7 19.Nfd2=) 17.Rd7 Kd7 (17...Bd7 18.Rd1+=) 18.Rd1 (18.g4!? Nh6 19.g5+/-) 18...Kc7= 19.a4 Be7 20.Kc3 (20.Nc3 Rd8=) 20...b6 21.Ned2 (21.Ra1 Rd8=) 21...Nd6=+ 22.Nb3? (22.Bd3 g6=+) 22...Bf5 (better 22...Ne4 23.Kb2 Nf2-+) 23.Nfd2-/+ g5 Black prepares e4 (23...Bd7 24.Bf3=+) 24.f3 (24.a5 Rd8=+) 24...e4 (24...Rd8 25.e4 Be6 26.Bd3=+) 25.Nf1 (25.a5!?=+) 25...h5 (25...ef3 26.gf3 Be6 27.f4-/+) 26.Ng3 Bg6 27.fe4 (27.Ne4 Ne4 28.fe4 Bd6-/+) 27...h4-+ 28.Nf1 Ne4 29.Kb2 f5 30.Bd3 (30.Nc1-+) 30...Bf6 31.Ka3 (31.Kc2 Nf2 32.Re1 h3-+) 31...Nc3 (better 31...Nf2!? 32.Rd2 Nd3 33.Rd3 f4-+) 32.Rd2 Rd8 33.a5 (33.Bc2 Re8-+) 33...g4 (33...Bf7 34.Bf5 Bc4 35.Rd8 Kd8 36.Nbd2 Nb5 37.Ka4-+) 34.ab6? (better 34.Bc2-+) 34...ab6 35.Bc2 (35.Nc1 Bf7 36.Rf2 Nb5 37.Kb3-+) 35...Rd2 (better 35...Nb5 36.Ka2 Nc3 37.Kb2 Ne4 38.Kc1 Nd2 39.Nbd2 Ra8-+) 36.Nbd2 Kd6 37.Kb3 Ne2 38.e4? (better 38.h3 gh3 39.gh3-+) 38...Nd4-+ 39.Ka3?? (39.Kb2 Nc2 40.Kc2 fe4 41.Ne3-+) 39...Nc2 40.Kb3 Nd4 41.Kc3 (41.Ka3 fe4 42.Ne3 Bg5-+) 41...fe4 42.Ne3 Nf3 (42...Nf5 43.Kb3 Ne3 44.Ka2 Ng2 45.Nb3 g3 46.hg3 h3 47.g4 h2 48.Ka3 h1Q 49.Ka2 e3 50.Ka3 Qb1 51.Nc5 Qb2 52.Ka4 Kc5 53.g5 Qb4) 43.Kb3 Nd2 44.Ka4 Nc4! 45.Kb3 (45.Nc4 Kd5 Decoy) 45...Ne3 46.Ka4 (46.Ka2 Ng2 47.Ka3 e3 48.Kb3 e2 49.h3 e1Q 50.hg4 Qb4 51.Ka2 Bf7) 46…Nd5 (46...Nd5 47.Kb3 e3 48.g3 e2 49.Ka3 e1Q 50.gh4 c4 51.Ka4 Qb4) 0-1. diotarolo (2015) - mowpet (2335), Rated Bullet game, lichess.org, 2014.

5.d4 Ng6 6.c4 ed4 7.ed4 Be7 (7...Qe7 8.Ne2=) 8.d5 0-0 9.Nf3 Re8 10.g3 (10.Be2 Nf4 11.0-0 Nd7=) 10...c6 11.Be2 cd5 (11...Bh3!?=) 12.Qd5+= Kh8 13.0-0 Bd7 14.Nc3 (14.Qb7? Bc6 15.Qa8 Ba8-+) 14...Bc6 15.Qd2 Nd7 16.Nd4 Nde5 (16...Nb6!?+=) 17.f4+/- Nd7? (17...Nf7 18.Rae1+/-) 18.Nc6?? (better 18.b5 Rb8 19.Rab1+-) 18...bc6+/- 19.Bf3 Bf8 (19...Qb6 20.Kh1 Rad8 21.Rae1+/-) 20.Bg2 (20.b5 Ne7+/-) 20...Ne7 (20...Rb8 21.Rae1 Qc7 22.Ne2+/-) 21.Rfe1 (better 21.Qd6 Nb6 22.c5+-) 21...Nf5? (21...Nb6 22.Qd4+/-) 22.Rad1 (better 22.Re8 Qe8 23.Bc6+-) 22...Re1 23.Re1 Nb6 24.Qd3 Qd7 (24...Ne7+-) 25.a4 (25.b5 Re8 26.Re8 Qe8 27.bc6 Qe1 28.Qf1 Qe8+-) 25...Re8 (25...d5!? 26.Bh3 g6 27.cd5 Bb4+=) 26.Re8+- Qe8 27.Qf5 (27.a5 Nc4 28.Qc4 d5+/-) 27...Nc4 28.Qc2 (better 28.Bf1 Qe1 29.Qc8+/-) 28...Qe1=+ 29.Bf1 Ne3?? (better 29...Qf1! 30.Kf1 Ne3 31.Ke2 Nc2=) 30.Qe2+- (30.Qe2 Qe2 31.Be2+-) 1-0. opperwezen (2825) - rikos11111, lichess.org, 2018.

5.Nf3 c6 6.c4 d5 7.cd5 Nd5 8.Nc3 a5 9.Nd5 Qd5 10.Be2 (10.ba5!? Bg4 11.h3=) 10...ab4 11.ab4 Na6 (11...Ra1 12.Qa1 Bb4 13.0-0–/+) 12.0-0 (12.Bc3!?=) 12...Bb4–/+ 13.d4 e4 14.Nd2 0-0?? (better is 14...Be6+=) 15.Bc4+– Bd2 16.Bd5 cd5 17.Qd2 Bd7 18.Rfc1 Bc6 19.Bc3 Nc7 20.Ra8 Ra8 21.Ra1 Rf8 22.Bb4 Re8 23.Qc2 Rb8 24.Bd6 Rc8 25.Bc7 Rc7 26.Ra8 Kf7 27.Qc5 Kg6 28.Qd6 Rf7 (28...Rd7 29.Qe6 Rc7 30.g4+–) 29.h4 (better is 29.Qg3 Kh5 30.Qh3 Kg5 31.f4 ef3 32.Qh7 f5+–) 29...h6 (29...Rd7 30.Qe6 Rc7+–) 30.g4 Rd7 31.Qe6 (31.h5 Kg5 32.Qf4 Kh4 33.Kg2 Bb5 34.Ra1 Bf1 35.Rf1 g6 36.Rh1) 31...Rf7 32.Qf5 1–0. Fournier,Frederic – trancadis, Active, 2007.

5.Nf3 Ng6 6.c4 Be7 7.Be2 0-0 8.d3 Qe8 9.0-0 c6 10.Nbd2 f5 11.Qc2 f4 12.ef4 (better is 12.e4+=) 12...Nf4+= (worse is 12...Rf4 13.d4+=) 13.Rae1 (better is 13.Ne4!?+=) 13...Qg6–+ (13...Ne2 14.Re2 Qg6 15.c5+=) 14.Bd1?? (14.g3 Bf5 15.c5 Ne2 16.Re2 Bd3 17.Qb3 Kh8 18.cd6+=) 14…Qg2 0–1. Fournier,Frederic (1665) – cabjerez, Active, 2006.

5.Bc4 Nh6 (5...Nge7 6.Qh5 g6 7.Qf3=) 6.Nf3+= Bg4 (6...f5 7.ef5 Nf5 8.0-0+=) 7.0-0 (7.h3 Bh5 8.Bd5+=) 7...Bf3 (7...f5!? 8.ef5 Qf6+=) 8.Qf3+/– (8.gf3?! f5=) 8...Nd4 (8...Qd7!?+/–) 9.Bd4+– ed4 10.Qh5 Kd7 11.d3 (11.Qd5 Kc8+–) 11...a6 (11...c6!?+/–) 12.Qd5+– Rc8? (better is 12...Kc8+–) 13.Qb7 (13.Qd4?! c6+–) 13...Ng4 (13...a5 14.Qa7+–) 14.Qd5 Ne5 15.Qe6 Kc6 16.Ba6 Rb8 17.f4 1–0. Wall,Bill – Maris Stella, internet, 2006.

5.Nf3 f5 6.ef5 Bf5 7.b5 =.

5.Nf3 Nh6 6.Bb5 Bd7 7.0-0 a6 8.Bc4 b5 9.Bd5 Rc8 10.c4 bc4 11.Bc4 Be7 12.Ba6 Rb8 13.d4 0-0 14.Bc1 Nf7 15.d5 Na7 16.Bd3 c6 17.Be3 Qc7 18.dc6 Bc6 19.Qb3 Kh8 20.Rc1 Qb7? 21.Ba7 Qa7 22.Rc6 Ng5 23.Nbd2 Rbc8 24.Rc8 Rc8 25.Qd5 Qc7 26.Ng5 Qc1 27.Rc1 Rc1 28.Nf1 fg5 29.Qa8 1–0. COMP – NN, 2003.

5.ef5 Bf5 6.d4 =.

5.ef5 Bf5 6.Qf3=.

4.c4 c6 5.e3 Ne7 6.d4 0-0 7.c5 Bc7 8.Bc4 Kh8 9.d5 cd5=+ 10.Bd5 d6 11.e4 Nd5 12.Qd5 Re8 13.Ne2 Be6 14.Qb7+= Nd7 15.0-0 dc5=+ 16.Nd2 Bb6 17.Rad1 Rb8 18.Qa6 cb4 19.ab4 Qe7 20.Ba3 Qf7 21.Nc4?? Bc4–+ 22.Rd7 Qd7 23.Qc4 Bd4 24.Rc1 Rec8 25.Qb3 Rc7 26.Nd4? ed4 27.Rd1 Rbc8 28.g3? Qc6 29.Qd5 Qc3 30.Bc1?? Qb4 31.Bf4 Rc1?? 32.Rc1 Rc1 33.Bc1 h6 34.Qc6 Qe1 35.Kg2 d3 36.Qa8 Kh7+/– 37.Be3 a5 38.Qd5 a4? 39.Qa2?? Qd1 40.Qd2 Qb3 41.Bd4 a3 42.h4?? a2 43.h5?? Qc2–+ 44.Qa5 d2 45.Qc3?? Qc3 46.Bc3 d1Q 47.e5 Qd5 48.f3 f5 49.Kh3 Qf3 50.Ba1 Qg4 51.Kg2–+ Qe2 52.Kh3 Kg8 53.e6–+ Qe6 (53...Qe6 54.Bc3 f4 55.Kg2 Qc6 56.Kg1 Qc3 57.Kg2 Qg3 58.Kf1 a1Q 59.Ke2 Qe3) 0–1. dtpwaldi – faustos, internet, 2011.

4.e3 Nc6 5.Nf3 Qe7 6.Nc3 b6 7.Nb5 Qd8 8.Nd6+/– cd6 9.Nh4 Nge7 10.d4 e4 11.d5 Ne5 12.Be5 de5+– 13.d6 Ng6 14.Qh5 0-0 15.Ng6 hg6 16.Qg6 Bb7?? 17.Bc4 (17.Bc4 Bd5 18.Bd5 Rf7 19.Qf7 Kh7 20.Qh5#) 1–0. Kingog – peterlaabs12, Caissa.com, 2004.

4.e4 Qe7 5.c4 b6 6.c5 (6.Nc3!?+/–) 6...bc5= 7.bc5 Bc5 8.Nc3 Nc6 9.Nf3 Bd4 (better is 9...Rb8 10.Rb1 Bb7=+) 10.Qc2?? (10.Nd5 Qd6 11.Nd4 Nd4+=) 10...Bb7?? (better is 10...Qc5–+) 11.Nd4 (better is 11.Nd5!? Qd6 12.Nd4 ed4 13.a4=) 11...Nd4=+ 12.Nd5?? (better is 12.Qd3=+) 12...Nc2–+ 13.Kd1 Qd6 (better is 13...Bd5 14.Kc2 Qc5 15.Bc3 Be4 16.Bd3 Bd3 17.Kd3 Qf2 18.Kc2–+) 14.Kc2 Qc5 15.Bc3 Bd5 (16.ed5 Ne7–+) 0–1. slavisa99 – SirCharles, Live Game Caissa's Web, 2004.

4.e4 Ne7 5.Bc4 Ng6 6.h4 (6.Ne2 b5 7.Bb5 Bb7+/–) 6...h5 (6...Nf4 7.Qf3+=) 7.Ne2 Nc6 8.f3 (8.g3 Rf8+=) 8...Qe7 (8...f5 9.g3=) 9.d4 (better is 9.Nbc3!?+/–) 9...ed4 10.Nd4 Nd4 (better is 10...Bg3 11.Kf1 d6=+ (11...Nh4 12.Rh4 Nd4 13.Rh3+=)) 11.Qd4?? (11.Bd4 Bg3 12.Kf1 Ne5=) 11...b6 (better is 11...Bg3 12.Kf1 Be5–+ (12...Bh4?! 13.Nc3=; 12...Nh4?! 13.Nc3=)) 12.Qd3 (12.Qf2 Bb4 13.Nc3 Ne5 14.ab4 Nc4=+) 12...Bb7 (12...Bg3 13.Kf1–/+) 13.Nd2 (13.0-0 0-0-0 14.Ba6 Be5=+) 13...0-0-0 (better is 13...Bg3 14.Kd1 Bh4–/+ (< 14...Nh4 15.f4 Bf4 16.Rh4+=)) 14.a4? (14.0-0-0 Bf4=) 14...Qf8 (14...Nf4 15.Qf1 Bb4 16.g3–+) 15.Bc3 (15.0-0 Bb4 16.Nb3 Qd6 17.Qd6 Bd6–/+ (17...cd6?! 18.Rfd1=)) 15...Re8 (better is 15...Nf4!? 16.Qf1 Bb4 17.Bb4 Qb4–/+) 16.Ba6 Ba6 (better is 16...Bg3!? 17.Kf1 Be5=) 17.Qa6+= Kb8 18.a5 f5?? (better is 18...Bg3 19.Kf1 Qd6+=) 19.ab6+– cb6 (19...c6 20.Qa7 Kc8 21.Qa8 Bb8+–) 20.Qa7 Kc8 21.Qa8 (better is 21.Qb6 Bg3 22.Kd1 Qd6 23.Ra8 Qb8 24.Rb8 Bb8 25.Qg6 fe4 26.Bg7 ef3 27.Bh8 Rh8 28.Qa6 Kc7 29.gf3 Re8+–) 21...Bb8 22.Ra7 Kd8 23.Qb8 Ke7 24.Qb6 Kf7 25.0-0 Kg8 26.Qd4 Re7 27.ef5 Kh7 28.fg6 Kg6 29.Ra6 Re6 30.Re6 de6 31.Re1 Kh7 32.Qe4 Qf5 33.Qf5 ef5 34.Re7 Rg8 35.Rg7! Rg7 36.Bg7 Kg7 37.b5 Kf7 38.b6 Ke7 39.c4 Kf6 40.c5 Ke5 41.b7 Kd4 42.b8Q Kc5 43.Qc7 Kd5 44.Qd7 Ke5 45.Qe7 Kd5 46.Qd7 1–0. Slavisa2 – StillSleeping, Live Game Caissa's Web, 2004.

4.e4 Nh6 5.d4 (5.Bc4 Nf7+=) 5...ed4= 6.Bd4 (6.Qd4? Be5 7.Qd1 Bb2–+) 6...0-0 7.Bc4 Kh8 8.Nf3 Re8 9.Nbd2 Bf4 10.0-0 d6 11.Re1 Nc6 12.Bc3 Bg4 13.b5 Ne5 14.Be5 (14.Be2 Qd7=) 14...Be5 (14...fe5!? 15.Bd5 Rb8=+) 15.Rb1= Re7 (15...Qc8 16.h3 Bh5 17.Qc1=) 16.h3 Bh5 17.g4 Bf7 18.Bf7 Nf7 19.Nc4 Ng5 (19...Qe8=) 20.Nfe5 (better is 20.Nce5!? de5 21.Ng5+=) 20...fe5–/+ (< 20...de5 21.Qd8 Rd8 22.Kg2=) 21.Qd5 (better is 21.Kg2!?–/+) 21...Qf8 (better is 21...Nf3!? 22.Kf1 Ne1 23.Ke1 Rb8–+) 22.Rb3 (22…Nf3 23.Rf3 Qf3 24.Re3–+; better is 22.Re3!? Rb8 23.Nd2–/+). b4_player – coen, GameColony.com, 2002.

5.c4 0-0 6.c5 Bc5 7.bc5 d6 8.cd6 Qd6 (8...cd6 9.Nf3+-) 9.Nc3 Be6 10.Nf3 Nbc6 (10...Na6 11.d4 Rfd8 12.Qc2+-) 11.d4 (11.Ne4 Qd5 12.Qc2 b6+-) 11...ed4 12.Nd4 (12.Nb5 Qd5 13.Nfd4 Nd4 14.Qd4 c6 15.Qd5 Nd5+- (15...cd5?? 16.Nc7+-)) 12...Nd4 13.Qd4 (13.ed4?! Rad8 14.Be2 Qd4 15.Qd4 Rd4+-) 13...Qc6 (13...Qd4 14.ed4 Rfe8 15.Bd3+-) 14.Qa4 Qd6 (14...Rfd8 15.Qc6 Nc6 16.Rc1+-) 15.Bc4 Rad8 (15...Bc4 16.Qc4 Kh8 17.Rd1+-) 16.Be6 (better 16.Ne4 Qb6 17.Bd4 Rd4 18.ed4+-) 16...Kh8 (16...Qe6 17.0-0+-) 17.0-0 (better 17.Qb3+-) 17...Qe6 18.Qe4 (better 18.Rad1 a6+-) 18...Qd6 (18...Qe4 19.Ne4 b6 20.Rfd1+-) 19.Rfd1 (better 19.Rad1 Qe5 20.Rd8 (20.Qb7?! Rb8 21.Na4 Rb7 22.Be5 fe5+/-) 20...Rd8 21.Qb7+-) 19...Qb6 (19...Qc5 20.Rd8 Rd8 21.Qb7+-) 20.Qb4 (better 20.Qe7 Rde8 21.Qb4+-) 20...Qb4 21.ab4 Rde8 (21...Rd1 22.Rd1 Nc6 23.b5+-) 22.Nb5 (22.Rd7 a6+-) 22...a6 (22...Rd8 23.Nd4 Rfe8 24.Ra7+-) 23.Nc7 Rc8 24.Ne6 Rg8 (24...Rfe8 25.Rd7 Kg8 26.g4+-) 25.Rac1 (25.Rd7!? Nf5 26.e4 Rc2 27.ef5 Rb2 28.Rb7 Rd2+-) 25...Nf5 (25...Rc1 26.Bc1 Rc8 27.Bd2+-) 26.Rc8 Rc8 27.g4 Nh4 28.Bd4 (28.Kf1 h6+-) 28...Nf3 (28...Rc4 29.h3 Kg8 30.Bc5+-) 29.Kg2 Nd4 30.Nd4 (better 30.Rd4 h6+-) 30...g5 (30...Kg8+-) 31.Nf5 h6 (31...Ra8 32.Rd6+-) 32.Rd7 (better 32.Kg3 b5+-) 32...Rc2 (32...Rc4 33.Rb7 Rg4 34.Kf3 Rc4+-) 33.Rb7 Kg8 34.Rb6 (better 34.Nh6 Kh8+-) 34...Kf8 (34...Ra2 35.Rf6 Rb2 36.Kf3+-) 35.Ra6 (35.Rf6 Ke8 36.Ra6 Kd7+-) 35...Kf7 36.Ra7 Kg6 (36...Ke8+-) 37.Rg7 1-0. allyouneedisluft (2425) - koga86 (1615), Hourly Bullet Arena, lichess.org, 2016. (=1.a3 f6 2.b4 e5 3.Bb2 Bd6)

5.Nf3 0-0 6.d4 ed4 7.Nd4 Be5 8.f4 Bd4 9.Bd4 Nec6 10.Bb2 d5 11.Nd2 a5 12.b5 Ne7 13.a4 c6 14.bc6 Nec6 15.c4 dc4 16.Nc4 Nb4 17.Qd8 Rd8 18.Nb6 Ra7 19.Rc1 N8c6 20.Bb5 Nd3? 21.Bd3+– Rd3 22.Nc8 Re3? 23.Kf2 Rb3 24.Na7 Na7?? 25.Bd4 Nc6 26.Bc5 Rb2 27.Kg3 h5 28.h3 g6 29.Rhe1 Kg7 30.Rcd1 Rb3 31.Kh2 Rc3 32.Bg1 Nb4 33.Rd7 Kh6 34.Rb7 Nd3 35.Re6 Nf4 36.Rf6 Ne2 37.Rbb6 Rg3 38.Rbe6 Ng1 39.Kg3 Kg5 40.Rg6 Kf5 41.Ref6 Ke5 42.Rf2 h4 43.Kh2 Kd5 44.Kg1 Kc5 45.Rf4 Kd5 46.Rg5 Ke6 47.Ra5 Kd6 48.Rf6 Ke7 49.Rh6 Kf7 50.Ra7 Kg8 51.Rb6 Kf8 52.Rb8 1–0. exp2005 – wojciechmm, internet, 2011.

4.e3 Nc6 5.Nf3 b6 6.d3 Bb7 7.Be2 0-0-0 8.Nbd2 Qf7 9.0-0 g5 10.h3 (10.b5!? Na5 11.Bc3+/–) 10...h5= 11.c4 g4 12.hg4?? (better is 12.Nh4+=) 12...hg4–+ 13.Nh2 (13.Ng5 fg5 14.Bg4–+) 13...Qh7 14.f3 (14.f4 Qh2 15.Kf2 Qh4 16.g3 Qh2 17.Ke1 Qg3 18.Rf2 Rh2–+) 14...Qh2 (14...g3 15.Re1 Qh2 16.Kf1 Qh1) 15.Kf2–+ Qh4 16.Kg1 (16.g3 Qh2 17.Ke1 Qg3 18.Rf2–+) 16...g3 17.Rf2 (17.Be5 Qh2) 17...Qh2 (17...Qh1) 18.Kf1 gf2 (18...Qh1) 19.Kf2–+ Qh4 20.Kg1 Bh6 21.e4 (21.Nf1–+) 21...Be3 22.Kf1 Qh1 (22...Qf2) 0–1. Fournier,Frederic – CRISTIANCASTRO (1685), Partie evaluee, 1m + 0s, 2007.

4.e3 d5 5.d3 Be6 6.Be2 Bf7 7.Nf3 Nc6 8.Nbd2 a6 9.c4 dc4 10.Nc4 Rd8 11.Qc2 Qe6 12.0-0 Be7 13.Rad1 Nh6 14.Rfe1 0-0 15.h3 Bg6 16.Nh4 Bf7 17.e4 Nd4 18.Qd2 Ne2 19.Qe2 b5 20.Ne3 c5 21.bc5 Bc5 22.Bc1 Be8 23.Nc2 Nf7 24.Nf5 g6 25.Nh4 Bd4 26.Nd4 Rd4 27.f4 Qe7 28.Qg4 Bd7 29.Qg3 Kg7 30.Bb2 Rd6 31.Bc3 Rc8? 32.Bb4+– Qe8 33.fe5 fe5 34.Bd6 Nd6 35.Rc1 Rc1 36.Rc1 Nf7 37.Nf3 Qe6 38.Qf2 Qb3 39.Qc2 Qa3+/– 40.Qc3 Qd6 41.Ne1 b4 42.Qc7 Qe6? 43.Qc4 Qb6 44.Kh1 a5 45.Ra1 Bb5 46.Qb3 Qd4? 47.Ra5+– Bd7 48.Nf3 Qf2 49.Ra2 Qf1 50.Kh2 (50.Kh2 Qc1 51.Ra7 Qf4 52.Kh1 Bh3 53.d4+– (53.gh3?? Qf3 54.Kg1 Qe3 55.Kg2 Qa7 56.Qb4 Qa2 57.Kg1 Ng5 58.Qe7 Kh6 59.Qf8 Kh5–+; 53.Qb4?! Bg4 54.Qd2 Qd2 55.Nd2 Kf6+–)) 1–0. exp2005 – viorel66, internet, 2011.

4.e3 d6 5.c4 g5 (5...a5 6.Nc3=) 6.Be2 Be6 7.Nc3 c6 (7...Bg7 8.Nd5 Qd7 9.d4+=) 8.b5 (8.d4 ed4 9.Qd4 Nd7+/–) 8...Bf7 (8...Bg7 9.d4+=) 9.bc6 bc6 10.Bh5 h6 11.Bf7 Qf7 12.Qa4 Qb7 13.Rb1 Qc7 (13...Nd7 14.d3+=) 14.Nd5 Qd7? (14...Qb7+=) 15.Nc3?? (better is 15.Nb6! ab6 16.Qa8+–) 15...Be7 (15...Qc7!?=) 16.Qc2 Bd8 17.Nf3 h5 (17...f5 18.d4 e4 19.Nd2+/–) 18.Qg6 Kf8 Black prepares the advance g4 19.0-0 (19.Qd3 Ke8+/–) 19...h4 (19...f5 20.e4+/– (worse is 20.Ng5 Rh6 21.Nh7 Qh7–+)) 20.d4 (20.h3!?+/–) 20...g4+= 21.Nd2 Qe7? (better is 21...f5 22.de5 Rh6+=) 22.de5 de5 23.Qg4 Nd7 24.f4 (24.Rfd1 h3 25.Nf3 Rh7+–) 24...ef4 (24...h3 25.g3+–) 25.Qf4 h3 26.g3 Bb6 27.Rf3?? (better is 27.Nce4+–) 27...Ne5+= 28.Nf1 (28.Nde4+=) 28...Nd3 (better is 28...Re8=) 29.Ne4?? (better is 29.Qe4 Rd8 30.Ba1+/–) 29...Ne1 (better is 29...Nf4 30.Rf4 Rh6–+) 30.Bf6 (30.Re1 Qe6+–) 30...Nf6?? (better is 30...Nf3 31.Qf3 Nf6 32.Nf6 Kg7=) 31.Qf6 (better is 31.Re1 Ke8 32.Nf6 Kd8 33.Rd1 Kc8 34.Qf5 Kb8 35.Rd7+–) 31...Ke8 (31...Qf6 32.Rf6 Kg7 33.Re1+–) 32.Qe7 (32.Qc6 Qd7 33.Nd6 Kd8 34.Nb7 Qb7 35.Rd1 Nd3 36.Rd3 Bd4 37.Rd4 Ke7 38.Qb7 Ke6 39.Qe4) 32...Ke7 33.Re1 Rae8 (33...Rhf8 34.Rf8 Rf8 35.c5+–) 34.c5 Ba5 35.Rd1 Rh5 36.Nd6 Rb8 (36...Rc5 37.Ne8 Ke8 38.Rd4+–) 37.Nf5 Kf7 38.Nd6 Kg8 (38...Kg8 39.Ne4 Rf8+–). GuestVQCF – GuestQBML, freechess.org, 2017.

4.e4 c6 5.Nc3 +=.

4.e4 Nc6 5.Nf3 Nh6 6.Nc3 Nf7 (6...f5 7.Nd5 Qd6 8.Bd3+/–) 7.d4 (7.Bc4 Nd6 8.Bd3 Qd8+=) 7...ed4+= 8.Nd4 Nd4 9.Qd4 Nd6? (9...c6 10.Be2+=) 10.Be2 (10.Nd5 Qd8 11.e5 fe5 12.Qe5 Be7 13.Qg7+– (13.Ne7?! Qe7 14.Qe7 Ke7+/–; 13.Qe7?! Qe7 14.Ne7 Ke7+–)) 10...a6?? (better is 10...c6+/–) 11.Nd5+– (11.Nd5 Qd8 12.Bh5 Nf7 13.Qc4 Bb4 14.ab4+– (14.Nb4?! 0-0+–)) 1–0. nbh999 (1970) – Klaus Behrmann (2045), ChessWorld.net, 2003.

5.Nc3 d6 +=.

5.c4 d6 6.Nc3 c6 7.Be2 g6 8.d4 Bg7 9.Nf3 0-0 10.0-0 Bg4 11.c5 Bf3 12.Bf3 (worse is 12.gf3 dc5 13.dc5 Nf7=) 12...ed4 13.Qd4 dc5 14.bc5 Nd7 15.Na4 Kh8 (15...Ne5 16.Qe3=) 16.Qb4 Rab8 17.Rac1 Nf7 18.Rfd1 Nfe5 19.Be2 f5 20.f4 Ng4 21.Bg7 Qg7 22.Qa5 Ne3 (22...Ndf6 A) 23.Qa7? Ra8 (23...Ne4?! 24.Bg4 fg4 25.Rc4+=; 23...fe4?! 24.Bg4 Ra8 25.Qb6–/+) 24.Qb6 Ra4–+; B) 23.h3 Ne3 24.Rd3 Ng2 25.Kg2 fe4 26.Re3+=) 23.Rd7!+/– Qd7 24.Qc3 Qg7 25.Qe3 fe4 26.Nc3 (26.Qe4?! Rbe8 27.Qc4 Re2 28.Qe2 Qd4 29.Kh1 Qa4 30.Qe5 Kg8 31.Qe6 Rf7 32.Qe8 Kg7 33.Qe5 Kg8 34.Qe8 Kg7 35.Qe5 Kg8 36.Qe8=) 26...Rbe8 27.Ne4 Qb2 28.Bd3 h6 29.Re1 b5 30.cb6! ab6 (30...ab6 31.f5 Decoy; 30...Qb6 31.g3 Decoy) 31.f5! g5 (31...Rf5 32.Nd6 Double attack (32.Qh6 Discovered attack; 32.Nd6 Decoy); 31...gf5 32.Qh6 Mate attack) 32.Rb1 Qe5 33.Qb6 Rf5 34.Qc6 Qd4 (34...Kg7+–) 35.Kh1 Qe5 (35...Rff8 36.Qh6 Kg8 37.Qg5 Qg7 38.Qd5 Kh8+–) 36.Qh6 Kg8 37.Bc4 Rf7 38.Nf6 1–0. Registration (2400) – LL (2185), ICC, 2003.

5.d3 Nc6 6.Nd2 (6.Nf3 d6+=) 6...d6 (6...Qe6 7.Be2=) 7.Ngf3+= Bg4 8.h3 Be6 9.Be2 Nf7 (9...d5 10.ed5 Bd5 11.c4+=) 10.c4 0-0-0 (10...f5 11.b5 Nb8 12.0-0+=) 11.Nb3 (11.b5 Nb8 12.Qa4+/–) 11...Nd4? (better is 11...f5=) 12.Nfd4 ed4 13.Nd4 Ne5 (13...Bd7 14.Bg4+–) 14.Qa4 (14.Qa4 Kb8 15.Ne6 Qe6 16.f4+–) 1–0. waycoolguy (1920) – Klaus Behrmann (2030), ChessWorld.net, 2003.

4.c4 b6 5.Nf3 Bb7 6.d4 ed4 7.Nd4 Ng6 8.e3 Bd6 9.Nb5 Be5= 10.N5c3 Ne7 11.f4+= Bd6? 12.Nd5?? a5 13.b5 c6?? 14.bc6?? dc6= 15.Nb6?? Qb6–+ 16.Bd4 Bc5?? 17.Nc3?? Nd7?? 18.Rb1?? Qc7?? 19.Bc5+– Nc5 20.Qh5 g6 21.Qc5 0-0 22.Nb5! Qd7 23.Nd6 Ba6 24.Be2 f5 25.0-0 Qc7 26.Qe5 Rad8 27.Qe6 Kg7 28.Qe5?? Kg8 29.Rfd1 Rd7?? 30.Qe6+– Kh8 31.Nf7 Rf7 32.Rd7 Bc8 33.Qf7 Qd7 34.Rd1 Qc7 35.c5 (35.c5 h5 36.Qf8 Ng8 37.Bc4+–) 1–0. rabelloenter (2050) – pe (2360), net–chess.com, 2006.

4.c4 d5 5.e3 dc4 (5...Be6 6.Qh5 Bf7 7.Qg4+=) 6.Bc4 Ng6 (6...Nbc6 7.b5 Na5 8.Ba2=) 7.d3 a6 (7...a5 8.b5=) 8.Nf3 (8.Qb3 Qd7=) 8...c6 (8...b5 9.Ba2=) 9.0-0 (9.Qb3 Bg4+=) 9...b5 10.Bb3 (10.Ba2 c5+=) 10...Bg4 11.d4 Nh4 (11...a5 12.h3 Bf3 13.Qf3 (worse is 13.gf3 ab4 14.Re1 Qd7–/+) 13...ab4 14.Rd1+=) 12.de5 Qd1 13.Bd1 Nf3 14.Bf3 (14.gf3 Be6+=) 14...Bf3+= 15.gf3 (15.ef6 Be4 16.fg7 Rg8 17.gf8Q Rf8+–) 15...fe5 16.Be5 The passed pawn on e3 will become decisive later 16...Nd7 17.Bb2 Nf6 (17...c5 18.bc5 Nc5 19.Rd1+=) 18.Nd2 (18.Rc1 Kd7+/–) 18...Be7 (18...a5!?+=) 19.Rac1 Rc8 20.Ne4 Ne4 21.fe4 The passed pawn on e4 will become decisive later (21.Bg7? Rg8 22.fe4 Rg7 23.Kh1 c5–+) 21...0-0 (21...Kf7 22.Bd4+/–) 22.Rfd1 Rfd8 (22...c5 23.Rd7 Rf7 24.e5+–) 23.Rd8+– Bd8 24.f4 (24.Rd1 Kf7+–) 24...a5+/– 25.Kf2 (25.Rc2 ab4 26.ab4 Be7+=) 25...ab4 26.ab4 Be7 27.Bc3 Rf8 (27...c5 28.Rg1 g6 29.Rb1+/–) 28.Ra1 (28.Kf3 Kf7+/–) 28...c5 29.Ra7 (29.bc5 Bc5 30.Be5 b4+/–) 29...cb4 (29...Rf7 30.Ke2+/–) 30.Bg7 Kg7 (30...Rf4!? 31.ef4 Bc5 32.Ke2 Ba7+/–) 31.Re7+– Kf6 (31...Kh6 32.Re5 Rb8 33.Kf3+–) 32.Rb7 (32.Rh7 b3 33.Rh6 Ke7+–) 32...Rc8 (better is 32...h5+–) 33.Rb5 Rc4 34.Kf3 White plans e5 34...h5 (34...Kg6 35.Rb6 Kf7 36.Rb7 Kg8 37.f5+–) 35.Rh5 Rc1 36.Rb5 Rb1 (36...Rf1 37.Kg4 Rg1 38.Kh5+–) 37.e5 Kf5 (37...Kf7 38.f5+–) 38.e4 Ke6 (38...Kg6 39.Ke3+–) 39.f5 Kf7 (39...Ke7 40.Rb7 Ke8 41.Ke3+–) 40.Rb7 (40.Kf4 b3 41.e6 Ke7+–) 40...Kg8 (40...Kf8 41.h4+–) 41.e6 b3 (41...Kf8 42.e5 Rf1 43.Ke4 Re1 44.Kf4 Rf1 45.Kg5 Ke8+–) 42.Rb8 Kg7 43.e7 b2 44.e8Q Rf1 45.Kg4 (45.Ke2 Rf2 46.Kf2 Kf6 47.Qe6 Kg5 48.Kg3 b1Q 49.Qg6) 45...b1Q Do you see the mate threat? 46.Qg6 1–0. Wall,Bill – Wizzy, internet, 2003.

4.c4 d6 5.Nc3 Be6 6.e4 c6 7.Nf3 Ng6 8.d4 Be7 9.d5 Bg4 10.h3 Bd7 11.Qb3 0-0 12.c5 Nf4?? (better is 12...Kh8+=) 13.g3 (better is 13.dc6 Be6 14.cb7 Bb3 15.ba8Q dc5 16.Qa7 cb4+–) 13...Ng6?? (13...Nd5 14.Nd5 Be6 15.Ne7 Qe7 16.cd6 Qd6+–) 14.cd6 (14.dc6 Kh8 15.cb7 Bc6 16.ba8R Ba8+–) 14...Bd6 (14...Kh8 15.de7 Ne7+–) 15.dc6 Kh8 16.cb7 Nc6 17.ba8Q Qa8 18.Bg2 (18.0-0-0 Qb8 19.Qd5 Bb4 20.ab4 Rd8+–) 18...Rb8 (18...a5 19.Qd5 ab4 20.Nb5+–) 19.0-0 (better is 19.Qd5!? Bb4 20.ab4 Rb4 21.Qd7 Rb2+–) 19...Na5 20.Qc2 Nc4 21.Rfd1 Qc6 22.b5 Qc5 23.a4 f5 24.Ng5 Rf8 25.Rd5 Qb6 26.Nd1 Qc7 (26...Na5 27.Qe2 h6 28.ef5 Bf5 29.Ne4+–) 27.Rc1 Qa5 (27...Ne7 28.Rd3 Bb5 29.ab5 Nb2 30.Qb2+–) 28.Qc4 Qe1 (28...Be7 29.Nf7 Rf7 30.Rd7+–) 29.Qf1 (29.Bf1 Be7 30.Nf7 Rf7 31.Rd7 Rf8+–) 29...Qb4 30.ef5 (30.Rc4 Qa5 31.Rd6 Qd8 32.ef5 Rf5+–) 30...Bf5 31.Bc3 (better is 31.Rc4 Qb3 32.Rd6 h6+–) 31...Qa3 32.Ra1 1–0. Constantin,Mathias (1865) – Dubos,Patricia, Mont de Marsan–ch, 2008.

4.d4 ed4 5.Nf3 Nbc6 6.Nd4 Nd4 7.Qd4 d5 (7...a5 8.b5=) 8.e4 a5 (8...de4 9.Qe4 c6 10.Nc3=) 9.Be2 (9.Nc3 ab4 10.ab4 Ra1 11.Ba1 c6=) 9...de4 (9...ab4 10.ab4 Ra1 11.Ba1=) 10.Qe4 Qd5 11.Qd5 (11.Nc3 Qe4 12.Ne4 ab4 13.ab4 Ra1 14.Ba1 Bf5=) 11...Nd5 12.Bh5 Kd8 13.Bf3 (13.Nc3 Nf4 (worse is 13...ab4 14.Nd5 ba3 15.Bc3+=) 14.0-0-0 Bd7=) 13...Nb6 14.b5 Bd6 (14...Nc4 15.Bd4=) 15.0-0 (15.Nd2 Re8 16.Kd1 Na4+=) 15...Bd7 16.Bb7 Rb8 17.Bf3 (17.Bc6 Bc6 18.bc6 Nc4=) 17...Bb5 18.Rd1 Ba4 (18...Nc4 19.Bd4 Bd7 20.Ba7=) 19.Ra2 (19.Be4 Re8 20.Bh7 Nd7=) 19...Bd7 20.Bc3 a4 21.Nd2 (21.Rb2 Re8+=) 21...Ke8 (21...Re8 22.Ne4 Nc4 23.Nd6 cd6 24.Bb4=) 22.Ne4= Be7 23.Bd4 Be6 24.Raa1 Kf7 25.Nc5 Bc5 (25...Bf5 26.c3=) 26.Bc5 Nd7 27.Ba7 Rb2 (27...Rbd8 28.Be4=) 28.Be4 (28.Bc6 Nb6=) 28...Nb6 ½–½. Baer,Werner – Woelfelschneider,Peter, TT–13 ETC, 2004.

4.e3 Nbc6 5.c4 d5 6.b5 White gets the initiative 6...Nb8 (6...Na5 7.cd5 Qd5 8.Nc3=) 7.d4 dc4 (7...ed4 8.Bd4 Be6 9.Ne2=) 8.Bc4+= ed4 9.ed4 (9.Nf3+=) 9...c5 (9...Bf5 10.Nf3+=) 10.Ne2 (10.Qh5 Ng6+-) 10...a6 (10...Nf5 11.0-0 Nd6 12.Bd5 Nb5 13.Re1+-) 11.0-0 Bg4 12.dc5 Qd1 13.Rd1 Be2? (better 13...ab5!? 14.Bb5 Nec6+=) 14.Be2+- Nf5? (14...Nd7 15.Bh5 g6 16.Bf3+-) 15.b6 (15.Bh5 g6 16.Bf6 Bg7 17.Bg7 Ng7+-) 15...Bc5 (15...Nd7 16.Bh5 g6+-) 16.Rd5 Bb6 17.Rf5 0-0 (17...Nc6 18.Rd5+-) 18.Bc4 Kh8 19.Nd2 Nc6 20.Ne4 Rae8 (20...Rad8 21.Rd5 Rd5 22.Bd5 Rd8+-) 21.Rf6?? (21.Nd6 Re7+-) 21...Rf6?? (better 21...gf6 22.Bf6 Rf6 23.Nf6 Bf2 24.Kf2 Rf8+=) 22.Bf6 (better 22.Nf6 Rd8 23.Re1+-) 22...Re4-/+ 23.Bd5 Rf4 24.Bc6 (24.Bc3!? Rf2 25.Kh1-/+) 24...bc6-+ (24...gf6?! 25.Bb7 Rf2 26.Kh1= (26.Ba6?? Ra2 27.Kf1 Ra1 28.Ke2 Ra2 29.Kd1 Rg2-+); 24...Rf6?! 25.Bf3=; 24...Bf2?! 25.Kf1 bc6 26.Be5-/+) 25.Rd1?? (better 25.Bg5 Rf2 26.Re1 Rf7 27.Kh1-+) 25...gf6 (25...Bf2 26.Kh1 gf6 27.g3-+) 26.g3 (26.Rd2 Ra4-+) 26…Rf2 (26...Rf2 27.Kh1 Rc2-+) 0-1. pat_cash87 - sirgeshdb (1720), lichess.org, 2020.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Ne7).

4.e3 g5 5.d4 (5.Qh5 Ng6 6.Bd3 Bg7+/–) 5...d6 (5...Ng6 6.Bd3 Qe7 7.Nc3+/–) 6.Bd3 (6.Qh5 Ng6+/–) 6...Ng6 7.Qh5 Kf7?? (7...f5 8.de5 Bg7 9.Nh3+/–) 8.de5 (better is 8.Bg6 Kg7 9.Bd3+–) 8...de5+/– 9.Bg6 (better is 9.Nf3 Bd6 10.0-0+/–) 9...Ke6?? (better is 9...hg6 10.Qe2 c5 11.bc5 Be6=) 10.Bf7 Kd6 (10...Ke7 11.Nc3 c6 12.Rd1+–) 11.Nc3 c6 (11...Kd7+–) 12.Rd1 Kc7 13.Rd8 Kd8 14.Qd1 Kc7 15.Nge2 Bd7 16.Ne4 Bg7 (16...Be7 17.N2g3 g4 18.f3+–) 17.Qd6 Kc8 18.Nf6 Rf8 19.Be5 Rf7 (19...Kd8 20.Nd4 Re8 21.Be8 Bf8 22.Ne6 Kc8 23.Qc7) 20.Qc7 1–0. Fournier,Frederic (1805) – traffic, Active, 2006.

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 7.c4 d5 8.d4 e4 9.Nfd2 f5 10.0-0 b6 11.f3 c5 12.cd5 Qd5?? 13.fe4 fe4?? 14.Rf8 Kf8+/– 15.Nc3 Qd8? 16.Nde4 Bf5? 17.dc5 Qd1 18.Rd1 Be4 19.Ne4 Bb2+= 20.cb6 ab6–/+ 21.Rd8 Kf7 22.Bc4 Kg7 23.Re8 Nec6 24.Bd5? Ra3–+ 25.Ng5 h6 26.Ne6 Kf6 27.Nc7 Bc3?? 28.Bc6 Nc6 29.Re6 Kg5 30.Rc6 Bb4 31.Rb6 Bd2 32.Rb5 Kf6 33.Nd5 Ke6 34.Nf4 Kd7?? 35.Ng6 Be3+= 36.Kf1 Ra1 37.Ke2 Bg5 38.Ne5 Kc7 39.Nf7 Kc6 40.Rf5 Ra2 41.Kf3 Ra3 42.Kf2 Ra2 43.Kg3 Ra3 44.Kf2 Bc1?? 45.Ne5 Kd6 46.Nf7 Ke6 47.Nh6 Bh6 48.Rb5 Ra2 49.Kf3 Bc1 50.Rb6 Kd7 51.g4 Rh2 52.Rb1 Ba3 53.Rb3?? Bd6 54.g5?? Rh3–+ 55.Kg4 Rb3 56.Kf5 Rb8 0–1. horacyad2010 – easytouchj, internet, 2011.

4.Nf3 d6 5.c4 Bg4 6.e3 Bf5 (6...e4 7.h3 Bh5 (worse is 7...ef3 8.hg4 fg2 9.Bg2+/–) 8.Qa4 Qd7 9.Qd7 Nd7=) 7.Nc3 c6 8.d3 b6 9.Be2 a6 10.e4 Be6 11.0-0 d5 12.ed5 cd5 13.Qb3 Qc7? (13...Nbc6 14.Rfe1+=) 14.Rfc1 (better is 14.cd5!? Bf5 15.Rac1+–) 14...Qd8 15.a4 (15.d4 e4 16.Nd2 f5+/–) 15...d4 16.Ne4 Nf5 17.b5 ab5 18.ab5 Ra1 19.Ra1 Be7 20.Ba3 Ba3 21.Ra3 0-0 22.Ra8 Qc7 23.Qa3 Nd7 24.Rf8 Nf8 25.Nfd2 Ng6 26.g3 h5 (better is 26...Qd8!?=) 27.Bh5 Bf7 28.Bg6 Bg6 29.Qa8 Kh7 30.Qc6 Qa7 31.Kg2 Ne7 32.Qd6 Nf5 33.Qb4 Ne7 34.f3 1–0. Fournier,Frederic (1905) – SALMANTINO (1690), Active (5/0), 2005.

4.g3 d5 5.Bg2 e4 6.d3= ed3 7.cd3 Nbc6 8.Nd2 Nf5 9.e3 Be7 10.Ngf3+= 0-0 11.0-0 a6 12.Rc1 d4 13.e4 Nh6 14.Qb3 Kh8 15.b5?? ab5=+ 16.Qb5 Ra5 17.Qc4 Rh5 18.Nd4 Ng4? 19.h3 Nge5+/– 20.Qa4 Bh3 21.Nc6 Nc6= 22.Bh3 Rh3 23.Kg2 Rh6 24.Qc4 Qd6 25.d4 b5?? 26.Qc6+– Qc6 27.Rc6 Bd6 28.d5 Rg6 29.Nf3 f5 30.Nh4 Rg5 31.Nf5 Bf4 32.Bg7 Rg7 33.Ng7 (33.Ng7 Kg7 34.gf4 Rf4 35.Rc7 Kf6 36.Re1+–) 1–0. baudrey – ChickenLittle, Live Game Caissa's Web, 2004.

5.e3 b6 6.Nf3 Nf5 (6...a5 7.b5=) 7.d4 (7.e4 de4 8.Ne4 Nd6 9.Nd6 Bd6+=) 7...ed4 (7...e4!? 8.Nd2 c6=) 8.Nd4+= Nd4 9.ed4 Be7 (better is 9...c6!?=) 10.Qh5+/– g6 11.Qd5 Qd5 (11...c6 12.Qd8 Kd8 13.d5+–) 12.Nd5+– 0-0?? (better is 12...Kd8+–) 13.Ne7 (13…Kg7 14.Kd2+–) 1–0. Wall,Bill – Guest5371, internet, 2003.

5.e3 Bf5 6.Nf3=.

5.e4 d4 6.Na4 b6 7.Nf3 Bd7 8.c3+= dc3 9.Nc3 Nbc6 10.Bc4 Ng6 11.0-0 a6 12.Nd5 Nce7 13.Ne3 Bb5 14.d4 Bc4 15.Nc4 ed4 16.Nd4 Nf4 17.Qf3 c5 18.Nf5 Neg6 19.Rad1 Qc7 20.e5! b5 21.Ncd6 Bd6 22.Nd6 Ke7 23.Nb5 ab5= 24.ef6 gf6 25.g3 c4 26.gf4 Rad8 27.Rfe1 Kf7 28.Qh5 Kg7 29.f5 Ne5+/– 30.Be5 fe5 31.Qg5 Kf7 32.Qh6 Rd1 33.Qe6 Kg7 34.Rd1 Rd8 35.Rd8 Qd8 36.Qe5 Kh6 37.f4 Qd1 38.Kf2 Qd2 39.Kg3 Qd3 40.Kg4 Qd1 41.Kh4 Qd8 42.Kg4 Qd1= 43.Kh4 Qd8 44.f6 Kg6 45.Qh5 (45.Qh5 Kf6 46.Qg5 Ke6 47.Qd8+–) 1–0. gtate (2305) – fbershadski (2220), net–chess.com, 2007.

5.de5 fe5 6.e3 d6 7.Nf3 Be6 8.c4 Be7 9.Be2 0-0 10.0-0 Nc6 11.Nbd2 Bg4? (11...Qe8 12.Bd3=) 12.h3 (better is 12.Ne5!? Be2 13.Nc6 Bd1 14.Nd8+/–) 12...Be6 13.Qc2 Qd7 14.Rad1 Bh3 (14...Bf5 15.Bd3 a6=) 15.Ne4?? (better is 15.gh3 Qh3 16.Nh2+/–) 15...Bg2 16.Kg2 Qg4 17.Ng3 Rf3! 18.Bf3 Nh4 19.Kh2 Nf3 20.Kg2 Nh4 21.Kh2 Rf8 22.Qe2? (better is 22.Qe4 Nf3 23.Kg2–/+) 22...Nf3–+ 23.Kg2 e4 (better is 23...Bh4!? 24.Rd2–+) 24.Bd4 Nh4 25.Kh2 Rf3 26.Rd2? (26.c5 Nf5 27.a4–+) 26...Nd4 27.ed4 Bg5 (better is 27...e3 28.Rd3 Bg5 29.Rb3–+) 28.Ra2? (28.Qe4 Qe4 29.Ne4 Bd2 30.Nd2–+) 28...Bf4 29.Kg1 (29.Rg1 e3 30.Qe1–+) 29…Qh3 0–1. Fournier,Frederic (1775) – meclena16 (1745), Active (4/0), 2005.

5.de5 Ne5 6.f4 Nc4 7.Qd4 Nb2 8.Qb2=+ Bd6 9.e3 0-0 10.Nf3 Qe7 11.Bc4 Kh8 12.Qd4? Re8 13.Kf2=+ Nc6 14.Qd3= a6 15.Re1 b5 16.Bb3 Bb7 17.Nc3 Nd8 18.Nh4 Be4?? 19.Ne4+– Qe4 20.Qe4 Re4 21.Bd5 Rf4 22.ef4 Nc6 23.g3 Rd8 24.Nf5 g6 25.Bc6 dc6 26.Nd6 cd6 27.Re7 h5 28.Rae1 Kg8 29.Re8 (29.Re8 Re8 30.Re8 Kf7 31.Rc8+–) 1–0. dennism (2100) – macedon (2065), net–chess.com, 2008.

5.c3 Be7 6.Qb3 d5 7.Be2 (7.c4 Be6=) 7...Be6 (7...Nh4 8.g3 Ng6 9.c4+=) 8.Bh5 (8.Nf3 0-0+=) 8...Bf7 9.Bg4 c6 (9...e4 10.Nh3+=) 10.Qc2 e4 11.d3 ed3 12.Qd3 0-0 13.Nf3 b5 (13...Nd7 14.0-0+=) 14.Nbd2 (14.Bf5 Nd7=) 14...Nd7 (14...Ne5 15.Ne5 fe5 16.e4+=) 15.Bh3 (15.c4 bc4 16.Nc4 c5=) 15...Nde5 16.Qe2 a5 17.0-0 a4 (17...Re8 18.Nd4 Qc7 19.f4+=) 18.Nd4= Qb8 (18...Qd6!?=) 19.f4+/– Nc4 20.Nc4 dc4 21.Nc6 Qc7 (21...Qb7 22.Nd4+/–) 22.Ne7 (22.Nd4 Qb7+/–) 22...Qe7+= 23.Rae1 Qe4 24.g3 (24.Qf3 Qf3 25.Rf3 Rad8+=) 24...Rae8 Attacking the backward pawn on e3 (24...Bd5 25.Bg2 Qg2 26.Qg2 Bg2 27.Kg2+=) 25.Bg2+/– Qd3 26.Kf2 (26.Qf2 Rd8+/–) 26...f5 (26...Ne7 27.e4+=) 27.Rd1+/– Qe2 28.Ke2 Ne7 29.Rd7 Nc8 (29...Bh5 30.Kf2+/–) 30.Rfd1 (30.Bc6 Re6 31.Bb5 Bh5 32.Kf2 Be8+–) 30...Nb6 31.Rb7 (31.Rc7 Bh5 32.Bf3 Bf3 33.Kf3 Rc8+–) 31...Rb8 (31...Bh5 32.Bf3 Bf3 33.Kf3+/–) 32.Rb8 Rb8 33.Bc6 (33.Rd6 Kf8+/–) 33...Bh5 34.Bf3 Bf3 35.Kf3 h5 36.Rd6 Kh7 (36...Kf7 37.h3+/–) 37.h4 g6 38.Bc1 Kh6 (38...Rb7 39.e4 fe4 40.Ke4+/–) 39.Bd2 (39.e4 Nc8 40.Rd8 fe4 41.Ke4 Kg7+–) 39...Rb7 40.Be1 Nc8 41.Rd8 Ne7 42.Bf2 Nc6 43.Rd6 Ne7 44.e4 fe4 45.Ke4 Nf5 46.Rd5 (46.Rd8 Re7 47.Kd5 Re2+–) 46...Rb6?? (better is 46...Kg7+/–) 47.Bb6+– (47.Bb6 Ng3 48.Ke5+–) 1–0. euforia (1795) – guinguin, internet, 2007.

5.c4 c6 6.c5 d5 7.cd6 Bd6 8.d4 Be6 9.Bd3 Bf7 (9...ed4 10.Bd4 a5 11.b5=) 10.Qc2 (10.Nf3 ed4 11.Bd4 a5 12.ba5 Qa5 13.Bc3 Qd5=) 10...0-0 11.Nd2 ed4 12.Bd4 Nd7 (12...a5 13.h4 ab4 14.h5=) 13.Ngf3 c5 14.bc5 Rc8 15.Nb3 (better 15.Ne4!? Nc5 16.Nc5 Qa5 17.Qd2 Qd2 18.Kd2 Bc5 19.Bc5 Rc5 20.Rhc1+=) 15...b6= 16.c6 (worse 16.cd6 Rc2 17.Bc2 Qb8-/+) 16...Nb8 17.Bb5 (17.Be4 Qe8=) 17...a6=+ 18.Bd3 Nc6 19.Qb2 Nd4 20.Nbd4 Be5 (20...b5!?=+) 21.0-0 (21.Ba6 Rc5+/-) 21...Bd4 (21...b5 22.Bf5 Rc7 23.a4 ba4 24.Ra4+/-) 22.Nd4+/- Ne5 (22...b5 23.Bf5 Rc5 24.Bg6 hg6 25.a4+/-) 23.Ba6 g6? (23...Rc5 24.Rfd1 Qc7 25.Rab1+/-) 24.Be2 (better 24.Bc8 Nc4 25.Qe2 Qc8 26.Rfc1+-) 24...Kg7 25.Rfd1 Qc7 26.Rab1 Qc3 27.Qb6 Qa3 28.Ne6 (28.Qb7 Kg8+-) 28...Be6 29.Qe6 Rc7 30.Qb3 (30.Rd6 Rc1 31.Rc1 Qc1 32.Rd1 Qc2+/-) 30...Qb3 31.Rb3 Rc2 32.Bf3 Nf3 33.gf3 Rf7 34.Rd6 h5 35.Kg2 Ra7 36.Rbd3 (better 36.h4+/-) 36...Raa2=+ 37.Rd7 (37.Kg3 Rf2 38.h4 Rg2 39.Kf4 Rh2=+) 37...Kh6-/+ 38.h4 Rf2 39.Kg3 Rg2 40.Kf4 g5 (better 40...Rh2!? 41.e4 Rh4 42.Ke3 Rhh2-/+) 41.hg5 (41.Kf5 Ra5 42.R3d5 Rd5 43.Rd5 gh4 44.Kf6 Rg6 45.Kf7 h3=) 41...fg5= 42.Kf5 Ra5 43.Ke4 h4?? (better 43...g4=) 44.R3d6 Kh5 45.Rh7 1-0. dannysmet (2070) - indramuliadhys (2060), Rated Blitz game, lichess.org, 2021.

5.c4 d5 6.Nf3 d4 (6...a5 7.b5=) 7.Qc2 de3 8.de3 c5 9.b5 b6?? (better is 9...Be6+=) 10.Qe4+– Ne7 (10...Nc6 11.Qc6 Bd7+–) 11.Qa8 Nd7 (11...Qc7 12.Nc3+–) 12.Qa7 Nf5 13.Nc3 Bd6 (13...Nd6 14.Rd1+–) 14.Bd3 Bb8 15.Qa8 (15.Bf5?! Ba7 16.0-0 0-0+/–) 15...Nd6 16.Ne4 Bb7 (16...Nb7+–) 17.Nd6 Bd6 18.Qb7 0-0 (18...Qc7 19.Qa8 Nb8 20.Qd5+–) 19.Qd5 Kh8 20.Qd6 Re8 21.Be4 g6 22.Rd1 1–0. Janek – Henry, internet, 2016.

5.c4 d6 6.Nf3 Be6 7.Be2 b6 (7...a5 8.0-0=) 8.0-0 Be7 9.d3 0-0 10.Nbd2 Nd7 11.d4 c6 12.de5 fe5 (worse is 12...Nde5 13.Nd4 Bd7 14.f4+/–; worse is 12...Nge5 13.Nd4 Bf7 14.f4+/–) 13.Ne4 Nf6 14.Nf6 Rf6 15.Qc2 Qc7 16.Rad1 Raf8 17.Rd2 Bf5 18.Bd3 Bg4 19.Be2 R8f7 20.h3 Bc8 (20...Bf3 21.Bf3 Rf3 22.gf3+=) 21.Ng5+= Rf8 22.Nf3 h6 23.Bc3 c5 24.b5 Bb7 25.a4 e4 26.Bf6 Bf6? (26...ef3 27.Bd3 fg2+= (worse is 27...Bf6 28.Bg6 fg2 29.Rb1+=)) 27.Nh2+– Bg5 28.Bh5 Ne5 29.Ng4 Nd3 30.Bg6 Bc8? (30...Qe7 31.Rfd1+/–) 31.Rd3 (better is 31.Be4 Nb4 32.Qb1+–) 31...ed3 32.Qd3 Bg4 33.hg4 Qe7 34.Qd5 Kh8 35.Re1 Bf6 36.f4 Bh4 37.Re2 Bf6 (37...Bg3 38.Be4+/–) 38.Bf5 Qd8 39.Rd2 Be7 (39...Bc3 40.Rd1+–) 40.e4 Qc7 (40...g6 41.Bg6 Rf4 42.Bf5+–) 41.e5 (41.g5!? Qd8+–) 41...de5 42.fe5 (42.Qe6 Rf6 43.Qd7 Qd7 44.Rd7 g6 45.Re7 gf5 46.fe5 Rf8 47.gf5 Rf5 48.Ra7 Re5+–) 42...Bg5+/– 43.Rd1 (43.Rd3!?+/–) 43...Be3+= 44.Kh1 Qe7 45.e6?? (better is 45.g3+=) 45...Qh4 0–1. Fournier,Frederic (1660) – gpaco (1715), Active, 2006.

5.d3 d5 6.Nd2 a5 7.ba5 Ra5 8.Ne2 Bd6 9.g3 Qe7 10.Qc1 Be6 11.Bg2 c6 12.0-0 0-0 13.Nb3 Ra6 14.Nd2 Nd7 15.c4 Rfa8 16.d4 Ba3 17.c5 Bb2 18.Qb2 b5 19.cb6 Ra1 20.Ra1 Rb8 21.b7 e4 22.Ra8 Qd8 23.Rb8 Qb8 24.Nb1 Ne7 25.Nbc3 Nf5 26.Na4?? Nd6=+ 27.Nc5 Nc5 28.dc5 Qb7 29.Qb7 Nb7 30.Nd4 Bd7 31.Nb3 Kf7 32.Bf1 f5 33.Be2 Ke6 34.Kf1 Ke5 35.Ke1 g5 36.Kd2 g4 37.Bf1 h5 38.Kc3 Be6 39.Kb4 Bc8 40.Nd4 Bd7 41.Ba6 Nd8 42.Ka5 h4 43.Kb6 Kf6 44.Kc7 Ke7 45.Bb7 hg3 46.hg3 Ne6 47.Ne6 Ke6 48.Bc6 Bc6 49.Kc6 f4 50.Kb7 fg3 51.fg3 d4 52.c6 de3 53.c7 e2 54.c8Q Ke5 55.Qc1 Kd4 56.Qd2 Ke5 57.Qe2 Kd4 58.Kc6 e3 59.Kd6 Ke4 60.Kc5 Ke5 61.Qe3 Kf6 62.Qf4 Ke6 63.Qg4 Ke5 64.Qf3 Ke6+– 65.Qf4 (65.Qf4 Ke7 66.g4 Ke8 67.Kd6 Kd8 68.Qf8; 65.g4 Ke7 66.g5 Ke6 67.Qf6 Kd7 68.Qf7 Kd8 69.Kd6 Kc8 70.Qc7) 1–0. exp2005 – mosioan, internet, 2011.

5.Nf3 c5 6.c3 Bd6 7.d4 b6? 8.Be2 Bb7 9.0-0 0-0 10.h3 Bc7 11.bc5 bc5?? 12.dc5 Na6?? 13.Qb3+– Kh8 14.Qb7 Nc5 15.Qd5 Bb6 16.Nbd2 Ne7 17.Qc4 d6 18.Ne4 Nb7?? 19.Ng3+– Rc8 20.Qh4 Ng6 21.Qg4 Qe7 22.Nh4 Nh4 23.Qh4 Nc5 24.Rad1 Na4 25.Ba1 Nc3 26.Bc3 Rc3 27.Nf5 Qf7 28.a4 d5 29.Bb5 Qe6 30.Qg4 g6 31.Nh6 f5 32.Qg5?? Kg7? 33.h4 d4 34.h5?? de3 35.Bd3?? ef2 36.Kh1 e4 37.Be2 Qf6?? 38.Qd2?? g5 39.Qd7 Kh8. horacyad2010 – perjaad, internet, 2011.

5.Qh5 d5=.

5.ed5 Qd5 A) 6.Nc3 A1) 6...Qd8 7.Bb5 (7.Bc4 a5 8.b5 Nd7 9.Nf3 Nb6 10.Bb3 Ng6 11.0-0 a4 12.Ba2+=; 7.Be2 a5 8.b5 Nd5 9.Nf3 Nc3 10.Bc3 Bd6 11.d4 ed4 12.Nd4+=; 7.Nf3 Nbc6 8.Be2 Bf5 9.0-0 Qd7 10.Nh4 Be6 11.Ne4 Nd5 12.d4=) 7...c6 8.Be2 Bf5 9.Nf3 Ng6 10.d4 a5 11.b5 Nd7 12.0-0+=; A2) 6...Qf7 7.Nf3 (7.d4 ed4 8.Nb5 Nf5 9.Qe2 Kd8 10.Nd4 Bd6 11.0-0-0 Nd4 12.Bd4=; 7.Bd3 Nbc6 8.Nf3 Be6 9.Be4 0-0-0 10.0-0 g5 11.h3 Rg8 12.b5+=) 7...Nbc6 8.b5 Na5 9.d4 ed4 10.Qd4 Be6 11.0-0-0 Nf5 12.Qa4+/–; A3) 6...Qd6 7.Qh5 (7.Bc4 Bf5 8.Nf3 a5 9.b5 Nd7 10.Nh4 Be6 11.Be6 Qe6 12.0-0=; 7.Nf3 Nbc6 8.Bc4 Bf5 9.Nh4 Qd4 10.Nf5 Qc4 11.d3 Qe6 12.Ne7=; 7.Bb5 c6 8.Ne4 Qd5 9.Qh5 Ng6 10.Bd3 f5 11.Ng3 e4 12.Be2=) 7...Kd8 8.Bb5 Nbc6 9.d3 g6 10.Qd1 Nd4 11.Ne4 Qb6 12.Bc4=; B) 6.Nf3 B1) 6...Bf5 7.d4 (7.Nc3 Qe6 8.Nh4 Nbc6 9.Nf5 Nf5 10.Bd3 0-0-0 11.0-0 Nfd4 12.Re1=; 7.Be2 Nbc6 8.c4 Qe6 9.Qa4 0-0-0 10.h3 Ng6 11.g4 Bb1 12.Rb1–/+) 7...e4 8.c4 Qd7 9.Nfd2 a5 10.b5 Ng6 11.Qe2 Kf7 12.Qe3+/–; B2) 6...Nbc6 7.Nc3 Qf7 8.b5 Na5 9.d4 ed4 10.Qd4 Be6 11.Nd2 a6 12.ba6+=; B3) 6...Qe4 7.Be2 Nd5 8.Nc3 Nc3 9.Bc3 Bf5 10.d4 Qc6 11.Qd2 e4 12.d5+=.

5.ed5 Nd5 6.Nc3 A) 6...Be6= 7.Nf3 (7.Nd5 Qd5 8.d4 ed4 9.Qd4 Qd4 10.Bd4 Nc6 11.Nf3 a5 12.b5=; 7.d4 Nc3 8.Bc3 ed4 9.Qd4 Qd4 10.Bd4 Nc6 11.Nf3 a5 12.b5=; 7.Qh5 Bf7 8.Qf3 Nc6 9.Bb5 Qd7 10.Nge2 0-0-0 11.0-0 a6 12.Ba4=) 7...c5 8.bc5 Bc5 9.Ne4 Nd7 10.d4 ed4 11.Nc5 Nc5 12.Bd4=; B) 6...Nc3 7.Bc3 (7.dc3 Bd6 8.Qh5 g6 9.Qf3 Nc6 10.Rd1 Qe7 11.Bd3 Bd7 12.b5+=) 7...a5 8.ba5 Nc6 9.Bd3 Qd5 10.Qh5 g6 11.Qf3 Qf3 12.Nf3=; C) 6...a5 7.Qh5 (7.b5 Nc3 8.Bc3 Bc5 9.Bd3 Qe7 10.Qh5 Kd8 11.Bb2 e4 12.Bc4=; 7.Qf3 Be6 8.Bc4 c6 9.b5 Nc3 10.Qc3 Bc4 11.Qc4 Qd5 12.Qd5=; 7.Bc4 Nb6 8.Bb5 c6 9.Bd3 ab4 10.ab4 Ra1 11.Ba1 Bb4 12.Qh5+=) 7...g6 8.Qf3 Nc3 9.dc3 Bd6 10.Rd1 Qe7 11.Bc4 e4 12.Qe3=.

5.ed5 Nd5 6.d4 ed4 '=/+' 7.Qd4 (7.Bd4 Qe7 8.Ne2 Bf5 9.c4 Nf4 10.Qd2 Nd3 11.Kd1 Nc6 12.b5+=) 7...Nc6 'Black threatens to win material: Nc6xd4' (7...c5 A) 8.bc5 Nc6 (8...Qe7 9.Ne2= Be6 10.Nbc3 Nc6 11.Qe4 Nc3 12.Nc3=) 9.Qe4 Qe7 10.Qe7 Be7 11.Ne2 Bc5 12.Nd2+=; B) 8.Qe4 Qe7 9.Qe7 Be7 10.Nc3 Nc3 11.Bc3 Nc6 12.b5=; 7...Qe7 8.Be2 Be6 9.Qe4 Nc6 10.b5 Bf7 11.Nd2 Qe4 12.Ne4=) 8.Bb5 'White has an active position' (8.Qe4 Qe7 9.Qe7 Be7= 10.Nc3 Nc3 11.Bc3 a5 12.b5=) 8...Bd6 (8...a5 A) 9.Nf3 ab4 (9...Qe7 10.Kf1+= Be6 11.Nc3 Qd7 12.Nd5=) 10.0-0 Qd6 11.ab4 Ra1 12.Ba1+=; B) 9.c4 Nde7 10.Qd8 Kd8 11.Nc3 ab4 12.Rd1=; 8...Qd6 9.Nc3 Qe6 10.Nge2 Nc3 11.Qc3 Bd7 12.Bc4+=) 9.Ne2 '=' 'Loses material' (9.Bc6 bc6 10.Ne2 0-0 11.c4 Nf4 12.Nf4=) 9...Nde7 'White has an active position' 10.Qe3 'White has a very active position' (10.Nbc3 0-0 (10...a6 11.Bc6 Nc6 12.Qe3=) 11.Qc4 Kh8= 12.Ne4=; 10.Qe4 0-0 11.0-0 Bf5 12.Qh4=) 10...0-0 '=/+' 'Black castles and improves king safety' 11.0-0 a6 (11...a5 12.ba5= (12.Nd2+=)) 12.Bc4 '=' 12...Kh8 13.f4 (13.Nd2!?= is an interesting alternative) 13...Nf5 '=/+' 14.Qd3 (14.Qc3 Re8–/+) 14...Re8 '–/+' 15.Rf3 (15.Nbc3 Ne3 16.Ne4 Nf1 17.Rf1 Be6–/+) 15...a5 16.g4 (better is 16.c3!?–/+) 16...Re2 '–+!' 'Discovered attack: g4, f5–d4' 17.gf5 (17.Qe2 Nfd4 Discovered attack) 17...Re8 18.Nc3 (18.c3 Ne7–+) 18...ab4 19.Nd5 Na5 (better is 19...Bc5 and Black is on the road to success 20.Kg2 Ra3 21.Ra3 ba3–+) 20.Ba2 '–/+' 20...c6 'Black threatens to win material: c6xd5' (20...Bc5 21.Kg2 ba3–/+) 21.ab4 '??' 'White loses the upper hand. ' (better is 21.Nf6 and White can hope to survive 21...gf6 22.ab4=) 21...cd5 '–+' 22.ba5 Ra5 23.Bc3 (23.Kg2 Bd7 24.Bc3 Rc5 25.Bd5 Bb5–+) 23...Ra3 (better is 23...Bb4 24.Bb4 Qb6 25.Rf2 Qb4–+) 24.Bd5 '??' 'but even a better move would not have saved the game. ' (better is 24.Qd5 b6 25.Re1 Re1 26.Be1 Rf3 27.Qf3 Bf5 28.Bb3–+) 24...Bc5 25.Kf1 (25.Kg2 is not much help 25...Rc3! Deflection: d5 26.Qc3 Qd5–+) 25...Rc3 '!' 'Deflection: d5' 26.Qc3N Qd5–+ 0–1. Orev,Petar – Peev,Peicho Chonev, BUL–ch, 1963.

5.ed5 Nd5 6.Qh5 g6 7.Qf3 a5 8.c4 Nf4 9.d4 Nd7 10.b5 Ne6 11.Qe3 Be7 12.Nf3=.

5.Qh5 g6 6.Qh4 =.

5.Qh5 Ng6 6.Bd3 d4 7.f4 ef4 8.Nf3 c5? (better is 8...Nc6 9.e5 f5+=) 9.Nh4+– (worse is 9.bc5 Nc6 10.Nh4 Nce5 11.Bb5 Ke7 12.Ng6 Ng6+/–) 9...Rg8 (better is 9...c4 10.Ng6 hg6 11.Qg6 Ke7 12.Bc4 Qd6+–) 10.Bc4 (10.bc5?! Be6 11.Bb5 Nc6+/–; 10.Ng6?! hg6 11.Qg6 Ke7+–) 10...f5 (10...Qe7 11.Bg8 (11.Ng6?! Qe4 12.Qe2 Bf5+–) 11...Qe4 12.Kd1+–) 11.Ng6 (11.Bg8?! Qh4 12.Qh4 Nh4+/–) 11...hg6 (11...Qf6 12.Nf8 Kf8 13.0-0+– (worse is 13.Qh7 Be6 14.Be6 Qe6+–)) 12.Qg6 Kd7 13.Bg8 Qh4 14.Kf1 fe4 (14...Kd8 15.ef5 Nd7 16.bc5+–) 15.Qf5 Kc7 16.Qf8 f3 (16...Qg4 17.Qe7 Nd7 18.Qe4 Qd1 19.Kf2 Qh1 20.Qf4 Kd8 21.Nc3 Qa1 22.Qg5 Nf6 23.Ba1 dc3 24.Bc3 cb4 25.Bf6 gf6 26.Qf6 Kc7 27.ab4+–) 17.Qg7 Bd7 (17...Kd8 18.gf3 Bh3 19.Ke2+–) 18.Bd5 (18.gf3 ef3 19.Bd5 Qh3 20.Kf2 Qf5 21.Qg3 Kc8 22.Qf3 Nc6+–) 18...fg2 (18...Qf4 19.Qf7 fg2 20.Kg2 Qg4 21.Kf2 Qh4 22.Ke2+–) 19.Kg2 Nc6 20.Qg3 Qg3 21.hg3 cb4 (21...e3 22.bc5 Rf8 23.Re1+–) 22.Be4 Re8 23.Rh4 ba3 24.Na3 a6 25.Bc6 (25.Kf2 b5+–) 25...Bc6 26.Kf2 Rf8 (26...d3 27.Rh7 Kc8 28.cd3 Rf8 29.Ke2 Re8 30.Kd1+–) 27.Ke2 Rf3 (27...b5 28.Bd4 Kd7 29.g4+–) 28.Bd4 1–0. woschkat (1995) – dennism (1800), net–chess.com, 2001.

5.Bc4 a6 6.Ne2 Nc6 7.0-0+= d6 8.f4 ef4 9.Nf4 Nf4 10.Rf4+/– Bd7?? 11.Qh5+– g6 12.Qf3 Ne5+= 13.Be5 fe5 14.Rg4 Qe7= 15.Rg3 Bg7 16.Nc3 Be6 17.Be6+= Qe6 18.Nd5 Kd7 19.Rf1 Rhf8+= 20.Qg4 Qg4 21.Rg4 Rf1 22.Kf1 Rf8 23.Ke2 Bh6 24.d3 Bc1=+ 25.a4 c6 26.Nb6 Kc7 27.Nc4 b5 28.ab5 ab5 29.Nd2 Ba3 30.c3 Bb2 31.Nb1 Ra8 32.Kd2 Ba3 33.Kc2 c5= 34.Na3 Ra3 35.bc5 dc5 36.Kb2 Ra8 37.Rg5= Kd6 38.Rg3 Rf8 39.Rf3 Rf3–/+ 40.gf3 h5 41.Kc2 Ke6 42.d4? ed4 43.cd4 cd4 44.f4 Kd6 45.Kd3=+ Kc5 46.f5 gf5 47.ef5 Kd5 48.f6 Ke6 49.Kd4 Kf6 50.Kc5 Kg5 51.Kb5 Kg4 52.Kc4 h4 53.Kd3 Kh3 54.Ke3 Kh2 55.Kf2 h3 56.Kf1 Kg3 57.Kg1 Kg4 58.Kh2 Kh4 59.Kg1 Kg3 60.Kh1 Kf3 ½–½. macedon (2065) – alwayslosing (1945), net–chess.com, 2008.

5.Bc4 Be7 6.Nf3 d6 7.0-0 Nf4 8.d4 Ne6 (8...Qd7 9.Bc1+=) 9.de5 fe5? (better is 9...de5 10.Nc3 Bd7+=) 10.Ne5!+– de5 11.Qh5 g6 12.Qe5 Bf6? (better is 12...Rf8 13.Be6 Bd6+/–) 13.Qf6+– Qf6 14.Bf6 Rf8 15.Be5 Nc6 16.Bg3 Bd7 17.Nc3 0-0-0 18.Nd5 Rde8 19.a4 Ne7 20.Rfd1 Bc6? (20...Nd5 21.Bd5 Nf4 22.Bf4 Rf4+–) 21.Nb6 ab6 22.Be6 Kb8 23.c4 (23.f3!? b5 24.ab5 Bb5+–) 23...Be4 24.Rd7 Nf5 (24...Bf5 25.Bf5 gf5 26.Be5+– (26.Rc7?! f4 27.Rd7 fg3 28.hg3 h6+=)) 25.Bc7 Ka8 (25...Ka7 26.b5 Re6 27.a5 (27.Rh7?! Rc8+/–) 27...ba5 28.Ra5 Ra6 29.ba6 ba6 30.Bd6 Kb6 31.Ra6 (< 31.Bf8 Ka5 32.Rh7 Nd4+–) 31...Ka6 32.Bf8+–) 26.Bf5 (better is 26.b5 Re6 27.a5 ba5 28.Ra5 Ra6 29.ba6 h5+–) 26...Bf5 27.Rh7 Re4 (27...Rf6 28.f4 Rfe6 29.Be5+–) 28.a5 1–0. Wall,Bill – King Joe, Internet, 2002.

5.Be2 a6 6.g3 Nc6 7.Bh5 Nce7 8.Nc3 c6 9.f4+= d6 10.f5+/– b6 11.fg6+– hg6 12.Bf3 f5 13.Qe2 Be6 14.Qe3 c5 15.ef5 gf5 16.Nh3 Rh3 17.Ba8 Qa8 18.Kf2 Nd5 19.Qg5 Nc3 20.Bc3 Rh6 21.bc5 bc5 22.d3 Qb7 23.Rab1 Qa7 24.Ba5 Be7 25.Qg7+= Rf6 26.Rb6+/– Rf7? 27.Qg8+– Bf8 28.Rd6 Qe7 29.Ra6 Rg7 30.Qe6 Qe6 31.Re6 Re7 32.Re7 Ke7 33.c4 Kd6 34.Re1 1–0. tata (2000) – alwayslosing (1945), net–chess.com, 2008.

4.e3 a6 5.d4 d6 (5...ed4 6.Qd4 Bg7 7.Nf3=) 6.c4 ed4 7.ed4 Bf5 8.c5 (8.Nc3 Ne7+=) 8...Qe7= 9.Ne2 dc5 10.bc5 (10.dc5 Nd7=) 10...Bg7 (10...Nc6 11.Nd2=+) 11.Nd2 (11.Nbc3 c6=) 11...Nc6 (11...Bh6=) 12.Qb3 (better 12.d5 Ne5 13.Be5 fe5 14.Ng3=) 12...Na5?? (12...0-0-0 13.Qe3=+) 13.Qa2?? (better 13.Qa4 Nc6 14.d5+-) 13...Be6 14.Qb1 Nh6 (14...Bh6 15.Bc3 Bd2 16.Bd2=+) 15.Qc2 (better 15.Bc3 Nc6 16.Qb7+=) 15...Bf5?? (better 15...0-0-0=+) 16.Qa4+- Nc6 17.0-0-0?? (better 17.d5 Bd7 18.dc6 Bc6 19.Qb4+-) 17...Bd7 (17...Ng4 18.Ng3 Bd7 19.Bb5-/+) 18.Qb3 (18.Nc3 Nf5 19.Nd5 Qd8=) 18...Na5 (18...0-0-0=+) 19.Qa2 (19.Qb4 Ng4 20.Qa5 Nf2 21.Nc3+=) 19...Ng4 (19...Ba4 20.Re1 Ng4 21.Kb1-+) 20.Nf4 Nf2 21.Nd5 Qd8 (21...Be6 22.Re1 Kf7 23.Ne7 Ba2 24.Rg1-+) 22.Re1=+ (22.Re1 Kf8 23.Rg1=+). pat_cash87 - komar29, lichess.org, 2020.

4.e3 d5 5.d3 Be6 6.Nd2 Bd6 7.Be2 Nd7 8.Ngf3 Ne7 9.c4 dc4 10.Nc4 Nb6 11.Nd6 Qd6 12.0-0 Nbd5 13.Qc2 0-0 14.d4 Nb6? 15.de5+– fe5 16.Rfd1 (16.Rfd1 Qc6 17.Qc6 Nc6 18.b5+– (< 18.Be5 Rf3 19.Bf3 Ne5+/–)) 1–0. exp2005 – kryeziu, internet, 2011.

4.e4+= a6 5.Nf3 b5 (5...c5 6.bc5 Bc5 7.d4 ed4 8.Nd4+=) 6.d4+/– Bd6 (6...ed4!? 7.Nd4 c5 8.bc5 Bb7+=) 7.de5+– fe5 8.c4 Nf6 9.Nbd2 Nc6 (9...Bb7!?+/–) 10.cb5+– ab5 11.Bb5 Bb7 12.Nc4 Ne4 13.0-0 (13.Nfe5?! Ne5 14.Ne5 Qg5+/–; 13.Nce5?! Ne5 14.Ne5 Qg5+/–) 13...h5 (13...Rf8+–) 14.Qd3 Nf6 (14...Ne7 15.Nce5 0-0 16.Nd7 Rf7+–) 15.Qg6 Kf8 16.Bc6 Bc6 (16...dc6 17.Nfe5 Rh7 18.Nf3+–) 17.Nfe5 Bd5 (17...Qe7 18.Nd6 cd6 19.Nc6 dc6 20.Bf6+–) 18.Nd6 cd6 19.Nd7! Ke7 (19...Nd7 A pinning theme 20.Qd6 A double attack) 20.Nf6 Bc6 Plans Qf8 21.Rfe1 Kf8 Black threatens to counter with Ra7 22.Nh5 1–0. Woelfelschneider,Peter – Rodion, 2009.

4.e4 Bd6 5.d4 (5.Nf3 Be7+/-) 5...Nc6 (5...ed4 6.Bd4 Nc6 7.Be3+=) 6.d5+/- Nce7 7.c4 c5 8.b5 a6 9.Nc3 ab5 10.Nb5 Bc7 11.d6 Ba5 12.Bc3 Bc3 13.Nc3 Nc6 14.Nf3 Qa5 15.Qd2 Nd4 (15...Nh6 16.Nd5 0-0 17.Nc7+=) 16.Nd4 cd4 17.Nb5 Qd2 18.Kd2 Kf7 19.f4 b6 20.fe5 (20.Bd3!? Ra5+-) 20...fe5+/- 21.Bd3 Nf6 22.Rhe1 (22.Rhf1 Kg7+/-) 22...Kg7 (22...Bb7 23.Nc7 Ra5 24.Ra2+=) 23.Nc7 Rb8 (23...Ra5!?+/-) 24.Rab1+- Ne8 (24...Rb7 25.Rb5 Ra7 26.Ra1+-) 25.c5! Nc7 (25...bc5 26.Ne8 Double attack (26.Rb8 Pinning; 26.Rb8 Deflection; 26.Rb5 Decoy)) 26.dc7 Ra8 27.cb6 Bb7 (27...Ra3 28.Bc4+-) 28.Rf1 (28.Rb3!? Rhf8+-) 28…Rhf8 1-0. Gu,Junhao - Tang,Zitao, Belt and Road Hunan Op C (8), 2019.

4.f4 ef4–/+ 5.Nf3 b6 6.c4 Bb7 7.e3 Bf3?? (better is 7...Qe7–/+) 8.Qf3+/– (worse is 8.gf3 a5+=) 8...g5?? (better is 8...c6!? 9.ef4 a5+/–) 9.ef4 (9.Qe4 Be7 10.Qa8 fe3 11.Qa7 ed2 12.Nd2 Nc6+–) 9...gf4?? (9...Qe7 10.Kd1 c6 11.Bd3+–) 10.Qf4 (better is 10.Qa8 Nc6 11.Qd8 Nd8 12.Be2+–) 10...Bg7 (10...Bd6 11.Qf3 Nc6 12.d4+–) 11.g3 (11.Be2 Ne7+–) 11...h5 12.Bg2 c6 13.0-0 Rh6 (13...Ne7 14.Nc3 0-0 15.Rae1+–) 14.d4 (14.Nc3 a5+–) 14...d5 (better is 14...h4+–) 15.cd5 cd5 16.Nd2 (better is 16.Re1 Ne7 17.Nc3 a5 18.Bd5 Ra7+–) 16...Nd7? (16...Ne7 17.Nc4!+–) 17.Nf3 (17.Bd5!? Ne7 18.Ba8 Qa8+–) 17...Rc8 (17...Nf8 18.Nh4 Ng6 19.Rae1 N6e7 20.Nf5+–) 18.Nh4 Rc2 (18...Ne7 19.Nf5 Nf5 20.Qf5+–) 19.Rab1 (19.Rae1 Ne7 20.Nf5 Rh8+–) 19...Qe7 (19...Qb8 20.Qe3 Kd8+–) 20.Nf5 Rg6 (20...Qf8+–) 21.Ne7 Ke7 (21...Ne7 22.Rfe1 Kd8+–) 22.Qf5 Kf7 23.Qc2 1–0. Fournier,Frederic (1670) – pithpossum, Active, 2005.

4.c4 a5 5.b5=.

4.c4 a6 5.e3 c5 (5...Nc6 6.Nc3+=) 6.bc5 Bc5 (6...Nc6 7.d4 ed4 8.ed4+/–) 7.d4 ed4?? (better is 7...Qb6 8.Qe2 Be7+/–) 8.Qh5+– Nf7 (8...g6 9.Qc5 (9.Qh6?! Qe7+–) 9...Nc6 10.Bd4+– (10.ed4?! d6 11.Qd5 Kf8+–)) 9.Qc5 de3 (9...Nc6 10.Bd4 (worse is 10.ed4 d6 11.Qh5 0-0+–) 10...d6 11.Qb6+–) 10.Qe3 Qe7 11.Nf3 (11.Qe7 Ke7 12.Nc3 d6+–) 11...Nc6 12.Qe7 Ne7 13.Nc3 0-0 14.Bd3 b6 15.Kd2 (15.0-0-0 Bb7+–) 15...Bb7 16.Rhe1 Rfe8 17.Be4 (17.Na4 Rab8+–) 17...Be4 18.Ne4 Rac8 (18...d5 19.cd5 Nd5 20.Bd4+–) 19.Rac1 (19.Bf6!? Nf5 20.Bc3 Re6+–) 19...Nc6 (19...Ng6 20.c5 b5 21.Nd4+–) 20.Bc3 Nfe5 (20...Re6 21.Nd4 Nd4 22.Bd4+–) 21.Be5 Ne5 22.Ne5 (better is 22.Nd6!? Nf3 23.gf3 Re1 24.Re1 Rb8+–) 22...Re5 23.Nd6 Rc6 24.Re5 fe5 25.Ne4 h6 26.a4 Kf7 27.Rc3 Ke6 28.g4 Rc8 29.h4 Rf8 (29...Rc6 30.f3+–) 30.Rd3 (30.Rb3 b5 31.ab5 ab5+–) 30...Rf4 (30...Rc8 31.Rd6 Ke7 32.Kd3+– (32.Rb6?! Rc4 33.f3 Ra4+–)) 31.f3 h5 (31...Rf8 32.Ke2 Rb8 33.Rd6 Ke7 34.Rg6+–) 32.gh5 Rh4 (32...Ke7 33.Rb3+–) 33.Rd6 Ke7 34.Rb6 Rh5 35.Ra6 1–0. Bulcourf,Carlos (2070) – Lucero,Sergio Anibal, 16th IRT Jose Rubinstein, 2016.

4.c4 Nf7 5.e3 Be7 6.Nf3 0-0 7.Bd3 c6 8.0-0 d5 9.cd5 cd5 10.e4 Be6 11.Nc3 d4 12.Ne2 a6 13.Rc1 b5 14.h3 Nd7 15.Rc6 Bc4 16.Bc4 bc4 17.Rc4 Nb6 18.Rc1 Rc8 19.Qb3+/– Kh8 20.g4 Nd6 21.Rc8 Qc8 22.Rc1 Qd7 23.Ng3 Rc8 24.Nf5 Bf8 25.Nd6 Bd6 26.Nh4 g6 27.Ng2 1–0. dtpwaldi – banszegi (1615), internet, 2011.

4.e3 a5 5.ba5 d5 6.d4 ed4 7.Bd4 =.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Nh6).

4.e3 d6 5.Bc4 Nf7 (5...d5 6.Bb3=) 6.Qh5 (6.Nc3 Nd7=) 6...d5 7.Bb3 c6 8.c4 g6 9.Qe2 Be6 10.h4 (10.cd5 Bd5 11.Bd5 Qd5=) 10...Bg7 (10...a5 11.ba5 Qa5 12.Nc3=+) 11.h5 Nd7 (11...Qd7 12.d4=) 12.Nc3 dc4 13.Bc4 Bc4 14.Qc4 Qe7 15.hg6 hg6 16.Rh8 Bh8 17.Nf3 Nb6 18.Qb3 Bg7 19.0-0-0 (19.b5 Rc8=) 19...0-0-0 20.Qc2 Kb8 (better 20...f5!?=+) 21.Qg6+= Nd6 22.d3 Bh8 (22...f5 23.Rh1 Nd7 24.Na4+=) 23.Rh1+/- f5 Black plans e4 (23...Qe6!?+/-) 24.Rh7+- Qe8 (24...Qf6 25.Qf6 Bf6 26.e4+-) 25.Qe8 Re8 26.Ng5 (26.e4!? fe4 27.Ne4 Ne4 28.de4 Nc4+-) 26...e4 27.de4 fe4 28.Nd1 Bb2 29.Nb2 Nbc4 (29...Rg8!? 30.Rh5 Nd5+=) 30.Nc4+/- Nc4 31.a4 Ne5 (31...Re5 32.Rh8 Kc7 33.Rh5+/-) 32.Kd2 Ng4 33.Ke2 b6 (33...Nf6 34.Rh6 Nd5 35.Rh4+-) 34.Rh4 (34.Rg7!? Nh2+-) 34...Nf6 35.b5 (35.Rh6 Rg8 36.Nf7 Ng4+-) 35...c5? (better 35...cb5!? 36.ab5 Re5+=) 36.Rh6 Nd5 37.Kd2 c4 (37...Re5 38.Rh8 Kb7 39.Rh7 Kb8 40.Nh3+-) 38.Rd6 Nc7? (better 38...c3 39.Kc2 Re5 40.Rd5 Rd5 41.Ne4 Re5 42.Nc3 Rg5+-) 39.Rd4 a6 40.ba6 Na6 (40...Ne6 41.Ne6 Re6 42.Kc3+-) 41.Rc4 (better 41.Ne4 Rg8 42.g3 Nc7+-) 41...Nc5 42.a5! Nb3 (42...ba5 43.Rc5 Deflection) 43.Kc3 Na5 44.Re4 Rc8 45.Kb4 Nc6 46.Kb5 Kb7 47.Ne6 Na7 48.Kb4 Rc6 (48...Nc6 49.Ka4+-) 49.Nd4 (better 49.Nd8 Ka6 50.Nc6 Nc6 51.Kc4 Ka5+-) 49...Rc5 (49...Rc7 50.g4+-) 50.Re7 Ka6 51.Kb3 (51.f4!? Nb5+-) 51...Nc6 52.Nc6 Rc6 53.Re4 (53.g4 Rg6 54.f3 Rg5+-) 53...Rc5 (53...Rg6 54.g4+-) 54.Ra4 (54.f4 Kb5+-) 54...Kb7 (54...Kb5 55.Rb4 Ka5 56.g4+-) 55.Rb4 (55.f4 Rc1 56.g4 b5+-) 55...Rg5 56.g4 Re5 57.Rf4 Re8 (57...Kc6 58.Rf5 Re4 59.g5+-) 58.Rf7 Ka6 (58...Kc6 59.g5+-) 59.g5 Rc8 (59...Rg8 60.Rf5+-) 60.f4 (60.g6 Rg8 61.g7 Kb5+-) 60...Rg8 (60...Re8 61.g6 Re3 62.Kc4 b5 63.Kb4 Re4 64.Kc5 Rc4 65.Kd6+-) 61.Rf6 (61.e4 Re8 62.e5 Kb5+-) 61...Rh8 (61...Re8 62.g6+-) 62.g6 (62.e4 Re8 63.e5 Kb5+-) 62...Rh3 (62...Re8 63.Rc6 Kb7 64.Rc3+-) 63.f5 (better 63.Re6!? Rg3+-) 63...Re3 64.Kc4 Rf3 (64...Rg3 65.Rf7 b5 66.Kc5+-) 65.Kd5 (65.g7 Rf4 66.Kd5 Rg4+-) 65...Rf4 (65...Rg3 66.Ke6 Ka5 67.Kf7+-) 66.Ke6 (better 66.g7 Rg4 67.Rg6+-) 66...Rg4 67.Kf7 Rg1 (67...Rc4 68.Re6 Rc7 69.Re7+-) 68.g7 Ka5 (68...Rg5 69.Rg6 Rf5 70.Ke6+-) 69.g8Q Rg8 70.Kg8 b5 71.Re6 Kb4 72.f6 Kc4 73.f7 Kd5 74.f8Q (74.Rg6 Ke5 75.f8Q Ke4 76.Re6 Kd4 77.Qf4 Kc5 78.Rd6 b4 79.Qd4 Kb5 80.Qd5 Ka4 81.Ra6) 74...Ke6 75.Qb4 Kd5 76.Qb5 Kd6 77.Qb6 Ke5 78.Qb7 Kd4 79.Qa7 Kd3 80.Qa6 (80.Qa6 Kd4 81.Kf7 Ke5 82.Qe6 Kd4 83.Qd6 Ke3 84.Ke6 Ke4 85.Qe5 Kd3 86.Kd5 Kd2 87.Kc4 Kc2 88.Qh2 Kd1 89.Kd3 Ke1 90.Qe2) 1-0. FeegLood (2710) - pashpash (2475), lichess.org, 2015.

4.e4 Be7 5.Bc4 c6 6.Qh5 Kf8 7.Qh6?? (better 7.Nc3+=) 7...gh6-+ 8.Ne2 (8.Nc3 Ke8-+) 8...d6 (8...d5 9.Bd3-+) 9.0-0 Na6 (9...d5 10.ed5 cd5 11.Bb3-+) 10.Ng3. opperwezen (2635) - JannLee (2740), lichess.org, 2017.

5.e3 a5 6.b5 d5 (6...0-0 7.d4=) 7.cd5 (7.Nc3 c6+=) 7...Qd5 8.Nc3 Qf7 9.Nf3 0-0 10.Be2 (10.d4 Nd7+=) 10...Nd7 (10...Qg6 11.0-0=) 11.0-0 (11.d4 Nf5=) 11...Nc5= 12.Qc2 Rd8 13.Ne4 Qg6 (13...Ne4 14.Qe4 c6 15.bc6+=) 14.d3+= Ne4 (14...Rd5 15.Qc4 Qf7 16.Nc3+=) 15.de4 (15.Qc7 Kf8 16.de4 Bh3=) 15...Bd6= 16.Nh4 Qe8 17.Nf5 (17.Rfd1 Be6=) 17...Nf5 18.ef5 c6 (18...e4=) 19.Qa4 (better is 19.bc6!? Qc6 20.Qb1=) 19...Bf5–/+ 20.Bf3 (20.Rac1!?–/+) 20...cb5–+ 21.Qb3 Kh8 22.Bb7 Be6 (better is 22...Ra7 23.Bd5 a4–+) 23.Bd5? (better is 23.Qc3 Rab8 24.Be4–+) 23...a4 24.Qa2 Bd5 25.Qd5 Ba3! 26.Qa2 (26.Ra3 Rd5 Discovered attack; 26.Ba3 Rd5 Discovered attack) 26...Be7 27.Rab1 (27.Rad1 Rdb8–+) 27...b4 (27...Qg8 28.Qa1 b4 29.Rbd1–+) 28.Qc4 (28.Qe6 Qd7 29.Qf7 e4–+) 28...a3 (28...Qg8 29.Qc7 Qe6 30.Ba1–+) 29.Ba1 Qg8 30.Qc7 Qe6 31.f4 (31.Qc2 Rac8 32.Qa4 Rb8–+) 31...ef4 (31...Rdc8 32.Qb7 ef4 33.ef4–+) 32.Qf4 Bc5 (32...b3 33.Bd4–+) 33.Rfe1 (33.Bd4 Bd6 34.Qf3 b3–+) 33...b3 34.Bd4 (34.Qg3–+) 34...Bd4 35.ed4 a2 0–1. Goldmund,Heike – Ropokis,Dimitrios, FICGS, 2014.

5.e3 Nf7 6.Nf3 0-0 7.d3 Kh8 8.Nbd2 d5 9.cd5 Qd5 10.Be2 a6 11.0-0 Nc6 12.Qb3 Be6 13.Qd5 Bd5 14.Rac1 Rad8 15.d4 (15.e4 Be6+=) 15...ed4 16.Nd4 Nd4 17.Bd4 Bd6 18.Bf3 Bf3 19.Nf3 Rd7 20.Rfd1 Nd8 21.Bb2 Ne6 22.Nd4 Nd4 23.Bd4 Re8 24.g3 Rde7 25.Rd2 a5 26.Bc5 Bc5 27.Rc5 b6 28.Rc4 ab4 29.ab4 Ra8 30.Rcd4 h6 31.Rd7 Rd7 32.Rd7 c5 33.bc5 bc5 34.Rc7 Ra5 35.Kg2 Kg8 36.Kf3 g6 37.Ke4 f5 38.Kd5 The isolani on c5 becomes a target 38...Ra2 39.Ke6 (worse is 39.Kc5 Rf2 40.Kd5 Rh2=) 39...Rf2 40.Kf6 g5 41.Kg6 Kf8 42.Rc5 Rh2 43.Rf5 Ke7 44.e4 g4 45.Rf7 Ke6 46.Rf4 0–1. Fournier,Frederic (1800) – Monia (1740), 3 min +1s chess16.com, 2008.

5.c4 0-0 6.d4 ed4 7.Bd4 (better is 7.Qd4 a5 8.b5=) 7...c5 (7...a5 8.b5=) 8.Bc3 (8.Bc5 Bc5 9.Qd5 Rf7 10.Qc5 d6+/–) 8...cb4 (8...Na6!?=) 9.ab4 Nc6 10.Qb3 (10.Ra4 Nf7+=) 10...Kh8 (10...Nf7 11.Bd3+=) 11.Nf3 Qb6 Will b4 fall? 12.b5 Ne5 13.Ne5 fe5 14.Be5 Ng4 15.Bg3 (better is 15.Bd4!? Qe6 16.Ra2+/–) 15...Nf2+= 16.Bf2 Rf2 17.Kf2 Decoy theme: f2 17...Qf6 A double attack 18.Kg1 Qa1 19.Nc3 Qe1 The mate threat is Qxe3 20.Nd5 Bc5 21.h3 b6 22.Kh2 Bd6 (22...Qf2 23.Qc3–/+) 23.Nf4+= Bb7 (23...Qf2 24.Qd3 Bf4 25.ef4 Qf4 26.g3 Qf2 27.Bg2+=) 24.Qd3= Be5 25.Rg1 (25.Qh7 Kh7 26.Bd3 Kh6 27.Re1 g5=) 25...d6 (better is 25...Qf2+=) 26.Kh1?? (better is 26.g3=) 26...Qg3–+ Plans Rf8 27.Qf5 g5?? (better is 27...Qe3 28.Ne2 Be4–+) 28.Bd3+/– Do you see the mate threat? 28...Qh4 29.Nd5 (29.Qd7 Bf3 30.gf3 gf4 31.ef4 Rd8 32.Qh7 Qh7 33.Bh7 Kh7 34.fe5 de5+–) 29...Bd5 (29...g4 30.Qg4 Qg4 31.hg4 Bd5 32.cd5=) 30.cd5 Rg8 (30...g4 31.Rc1 Rg8 32.Qf7+=) 31.g3 Qh6 32.Rc1 (32.Qg4 Rf8+=) 32...g4 (32...Bg3?? 33.Rc7 Rg6 34.Qd7+–) 33.h4 Bg3 34.h5 (34.Kg2 Be5+= (34...Qh4?? 35.Rh1 Qh1 36.Kh1+–)) 34...Be5 (better is 34...Qg7!?=) 35.Rc7+/– Threatening mate... how? 35...Bg7 36.Ra7 (36.Rd7 g3 37.Kg2 Rf8 38.Rd6 Rf5 39.Rh6 Rd5 40.Rh7 Kg8+=) 36...Rf8 (better is 36...g3+=) 37.Rf7?? (better is 37.Qg4 Rg8 38.Qh3+/–) 37...Rf7–/+ 38.Qf7 Qe3 39.Qf5?? (better is 39.Bf1–/+) 0–1. Wilk,Krzysztof – Krynicki,Henryk, Ustrzyki Dolne op Poland 1996.

5.d3 0-0 6.c4 d5 7.Nd2 c6 8.Ngf3 Bg4 9.Be2 Nd7 10.0-0 Rc8 11.Re1 a5 12.ba5 Qa5 13.Qb3 b5 14.cd5+/– Nc5 15.Qa2 cd5 16.Qd5?? Be6–+ 17.Qe6 Ne6 18.Nb3 Qb6 19.d4 ed4 20.Nbd4 Nd4 21.Nd4 Bc5 22.Rab1 Bd4 23.Bd4 Qa5 24.Bb2 Nf5 25.Bg4 b4 26.ab4 Qb5 27.e4 Nh6 28.Bc8 Rc8 29.e5 Re8 30.ef6 Re1 31.Re1 gf6 32.Bf6 Qb4 33.Rf1 Ng4 34.Bh4 Qf4 35.Bg3 Qf5 36.h3 Ne5 37.Re1 Nd3 38.Ra1 Qe4 39.Ra7 Qe1 40.Kh2 Nf2 41.Bf2 Qf2 42.Ra8 Kf7 43.Rh8 Kg6 44.Rg8 Kh6 45.Rg4 Qc5 46.Rh4 Kg7 47.Rg4 Kh8 48.Kh1 h5 49.Rg6 Kh7 50.Rg3 Kh6 51.Kh2 Qe5 52.h4 Qf4 53.Kh3 Qf5 54.Kh2 Qe5 55.Kh3 Qe1 (55...Qe1 56.Rd3 Qe6 57.Kh2 Qf6–+) 0–1. exp2005 – alfil77, internet, 2011.

5.d4 Nf7 =.

5.Nc3 d5 A) 6.Nf3 Nc6 (6...Be7 7.e4 de4 8.Ne4 Be6 9.Bd3 0-0 10.Qe2 Nc6) 7.b5 Na5 8.Qb1 Be6 9.Na4 Bd6 10.Bc3 Nc4; B) 6.Qh5 Nc6 (6...g6 7.Qh4 Bf5 8.Nf3 h5 9.Qg3 g5 10.h3 Nc6) 7.b5 Na5 8.Nf3 Be7 9.Be2 0-0 10.0-0 Nc4; C) 6.Nh3 Nc6 (6...Be7 7.f4 0-0 8.Qf3 e4 9.Qh5 f5 10.Bb5 a5) 7.Bd3 Be7 8.b5 Na5 9.0-0 0-0 10.e4 de4.

5.Be2 a5 6.b5 d5 (6...Bc5 7.Nc3 0-0 8.Nf3 d5 9.d4 ed4 10.Nd4 Qd6) 7.Nf3 c5 8.0-0 e4 9.Ne1 Bd6 10.Nc3 0-0.

5.Be2 Nc6 A) 6.Nc3 Be7 (6...d5 7.b5 Na5 8.Nf3 Be7 9.e4 de4 10.Ne4 0-0) 7.b5 Na5 8.Nd5 0-0 9.Nf3 c6 10.Ne7 Qe7; B) 6.b5 Na5 7.Nc3 d5 8.Nf3 Be7 9.0-0 0-0 10.e4 d4; C) 6.Nf3 d5 7.b5 Na5 8.0-0 Be7 9.d3 a6 10.a4 0-0.

5.Be2 d5 6.Nf3 (6.Nc3 Be7 7.Nf3 0-0 8.0-0 Be6 9.h3 Nd6 10.d3 Nc6) 6...Bd6 (6...c5 7.bc5 Nc6 8.d4 Be7 9.c4 dc4 10.Bc4 0-0; 6...Nc6 7.b5 Na5 8.0-0 Be7 9.Nc3 0-0 10.e4 d4) 7.d3 (7.c4 dc4 8.Bc4 e4 9.Nd4 Ne5 10.Qc2 Qe7) 7...0-0 8.Nbd2 (8.Nc3 Be6 9.0-0 Nd7 10.Qd2 c6) 8...Be6 9.0-0 (9.c4 a5 10.b5 Nd7) 9...Nc6 (9...a5 10.b5= (10.Nb3 ab4) 10...Nd7) 10.c4 Qe8 (10...a6=) 11.Rc1 (11.c5 Be7=) 11...a6 12.Qb3 dc4 13.dc4 g5 (13...Rd8 14.Ne4=) 14.Rc2 (14.Qc2 f5+=) 14...f5 15.c5?? (better is 15.e4=) 15...Be7 (better is 15...Bb3 16.Nb3 Be7–+) 16.Bc4 (16.Qe6 Qc8 17.Bc4 Kg7+–) 16...Bf6?? (better is 16...Bc4 17.Qc4 Bf6+=) 17.Be6+– Qe6 (17...g4 18.Ne1 Ne7+–) 18.Qc4 (better is 18.Qe6 Kg7 19.Qf5+–) 18...Qe7 (18...Qc4 19.Nc4 Kg7 20.Rd1=) 19.Rd1 g4 20.Ne1 Kh8 (20...Rad8 21.a4+=) 21.Nf1 (21.e4 f4+=) 21...Bg7 (21...Rad8 22.Rcd2+=) 22.Ng3 Ng5 23.Qe2 Qf7 24.Qc4 Qe8 (24...Qe7 25.Rcd2+=) 25.Rd5 (25.Rcd2 Qe6 26.Qe6 Ne6+/–) 25...h5 (25...Qe6 26.Rd3+=) 26.e4 Ne7 (26...fe4 27.Bc1 Ne6 28.Qe4 Ncd4=) 27.Rcd2?? (better is 27.Nf5!? Nd5 28.Qd5+/–) 27...f4 (27...Qf7 28.Nf5 Nf5+=) 28.Nf1?? (28.Nf5 Nd5 (worse is 28...Nf5 29.ef5 Rf5 30.Rd7+=) 29.Qd5 c6 30.Ng7 cd5 31.Ne8 Ne4 32.Rd5 Rae8=) 28...f3 (28...Nd5 29.Qd5 c6 30.Qc4–/+) 29.g3?? (29.Rd7 Rf4 30.Rc7 fg2 A) worse is 31.Kg2 Re4 (worse is 31...Ne4 32.Re2 Ng3 33.Qf4 Ne2 34.Qg5 Nf4 35.Kh1+=) 32.Qc1 Ne6 33.Re7 Qe7+=; B) 31.Ne3 Ne4 32.Rdd7+=) 29...Nh3 (29...Nd5 30.ed5 Qg6 31.Nd3–+) 30.Kh1–/+ Rd8?? (30...Nd5 31.ed5 Qb5–+) 31.Rc2?? (31.Rd8 Qd8 32.Nc2 Qe8+=) 31...Ng8?? (better is 31...Nd5 32.ed5 Qb5 33.Qb5 ab5–+) 32.Rd8+= Qd8 33.Nd3 Qg5 34.Qe6 (34.c6 b5 35.Qe6 Qf6=) 34...Qf6+= 35.Qe5 (better is 35.Qb3 Re8 36.Ne3+=) 35...Qg6?? (35...Qe5 36.Be5 Be5 37.Ne5 Re8 38.Ng6 Kg7–/+) 36.Qg7 (36.Qc7 Bb2 37.Rb2 (37.Nb2? Qe4 38.Nd3 Qd3 39.Qe5 Kh7–+) 37...Qe4 38.Qd7+/–) 36...Qg7+= 37.Bg7 Kg7 38.Nf4 (better is 38.Ne3!?+=) 38...Nf4= 39.gf4 Rf4 40.Ng3 (40.Nd2!?+=) 40...Kg6–/+ 41.h3 (41.h4!? gh3 42.e5–/+) 41...h4 42.Nf5 g3 (42...Re4 43.hg4 Rg4–+) 43.Kg1? (43.fg3 f2 44.Ne3 f1Q 45.Nf1 Rf1 46.Kh2–/+) 43...Re4–+ 44.Ne3 (44.fg3 Kf5 45.Rc3 hg3 46.Rf3 Ke6 47.Rg3 Nf6–+) 44...Ne7 45.Rc4 Rc4 46.Nc4 Kf5 47.a4 (47.Nd2 Kf4 48.fg3 hg3 49.Kf1–+) 47...Nd5 48.b5 (48.Nd2 Kf4 49.fg3 hg3–+) 48...ab5 (48...Nf4 49.Ne3 Ke4 50.c6 Nh3 51.Kf1 Nf2 52.Nc4–+) 49.ab5 (49.Nd2 Kf4 50.Nb1 b4–+) 49...Nc3 50.c6 0–1. Lipskij,Valeriy (2130) – Battalov,Bulat (2050), Czech Open B2, 2006.

5.Be2 Be7 A) 6.Nf3 0-0 7.Nc3 d5 8.0-0 Be6 9.d3 a6 10.h3 Nc6; B) 6.Nh3 0-0 (6...d5 7.c4 d4 8.ed4 ed4 9.0-0 0-0 10.Nf4 Nc6) 7.c4 a5 8.b5 d5 9.Nc3 dc4 10.Bc4 Nd7; C) 6.Nc3 d5 7.d4 Be6 8.de5 fe5 9.Bg4 Bg4 10.Qg4 0-0.

5.Nf3 A) 5...Nc6 6.e4 b6 (6...Be7 7.Nc3 Nd6 8.Bd3 0-0 9.0-0 b6 10.Nd5 Bb7) 7.Nc3 Bb7 8.Bc4 a5 9.b5 Nd4 10.0-0 Bc5; B) 5...Be7 B1) 6.e4 d5 7.Nc3 de4 8.Ne4 Be6 9.Bd3 0-0 10.Qe2 f5; B2) 6.Bb5 0-0 (6...a6 7.Be2 0-0 8.Nc3 d5 9.0-0 Nc6 10.h3 Be6) 7.Nc3 d5 8.0-0 Nd6 9.Qe2 c6 10.Ba4 Nd7; B3) 6.Nc3 d5 7.e4 de4 8.Ne4 Be6 9.Bd3 0-0 10.Qe2 f5; C) 5...d5 6.c4 e4 7.Nd4 Nc6 8.cd5 Nd4 9.Bd4 Qd5 10.Nc3 Qe6.

5.b5 d5 6.ed5 Qd5 7.Nc3 Qe6 8.Qh5 Qf7 9.Qf7=.

6.c3 d5 7.d4 Bb6 8.Bc1 0-0 9.Bh6=.

6.Nc3 d6 7.Bc4 Ng4 8.Nh3 f5 9.0-0+=.

6.Bc4 Qe7 7.Nc3 (7.Qe2 Nf7+= (7...d6 8.Nc3 Be6 9.Nf3+=) 8.Nc3 c6 9.Nf3+=) 7...c6 (better is 7...Bf2!? 8.Kf2 Qc5 9.d4 Qc4+=) 8.Qh5 (8.Na4 Nf7 9.Qh5+=) 8...Nf7 9.Nf3 (better is 9.Na4!? 0-0 10.Nf3+= (worse is 10.Nc5 Qc5 11.Qe2 d5+=)) 9...Bf2+= 10.Ke2 d5 (10...Ba7!?+=) 11.Bd5= (worse is 11.Kf2 dc4 12.a4 cb5 13.ab5 Qc5 14.Kg3 Be6–/+; 11.ed5?? g6 12.dc6 gh5–+) 11...cd5 12.Kf2 de4 13.Ne4 Nd7 14.d4 ed4 15.Rhe1 Nde5 16.Ne5 fe5 17.Bd4 g6 18.Qd1 Qh4 (better is 18...Bf5!? 19.Qe2 0-0+=) 19.Kg1+/– Bf5? (19...0-0 20.Bf2 Qf4+/–) 20.g3?? (better is 20.Be5 0-0 21.Nf6 Kg7 22.Bd4+–) 20...Qe7= 21.Bc5 Qe6 22.Nd6 Nd6 23.Qd6 (23.Bd6? 0-0-0 24.Re5 Qd6 25.Qd6 Rd6–+) 23...Qd6 24.Bd6 Bc2 25.Re5 Kd7 26.Bc5 Rhe8 27.Rae1 (27.Rd5!? Kc7 28.Rc1+/–) 27...Re5+= 28.Re5 Re8 29.Re8 Ke8 30.Kf2 Ba4 31.Bb6 Bb5 32.Ba5 Kd7 33.Ke3 Kc6 34.Bb4 Kd5 35.Kf4 Bd3 36.g4 h5 37.gh5 gh5 38.Kg5 Be2 39.h4 b5 ½–½. Larsen,A – Nilsson,N, Copenhagen, 2004.

6.Bc4 Nf7 7.Nc3 Nd6 8.Ba2 c6 9.a4=.

6.Nf3 Qe7 7.Be2 d6 8.Nc3 f5 9.0-0+=.

6.h3 0-0 7.Bc4 Kh8 8.a4 (8.Nf3 d6=) 8...f5 9.Be5 (better is 9.Nc3!?=) 9...fe4–/+ 10.Bg3?? (better is 10.d4 ed3 11.Qd3 Bf2 12.Kd1–+) 10...Qf6–+ 11.d4 (11.Nc3 Bf2 12.Ke2 Bg3 13.Ne4 Qe5–+) 11...Bd4 (11...Qd4?! 12.Qd4 Bd4 13.c3+=) 12.Ra3 (12.Qd2 Ba1 13.Bc7 Qb2–+) 12...Bf2 13.Kd2 Bg3 14.Rg3 Qd6 15.Rd3 ed3 16.Bd3 (16.cd3 Qf4 17.Kc2–+) 16...Qf4 17.Kc3 Qb4 0–1. Luneau,Gilles – Hresc,Vladimir (2335), Toulouse op, 1990.

6.Qh5 Nf7 7.Nc3 g6 8.Qh4 d6 9.Bc4=.

5.ed5 Qd5 6.Nc3 Qe6 7.Bb5 Bd7 8.Qe2 (8.Qe2 Nc6 9.Nf3=). grandmaster goldberg – gash, ChessWorld.net, 2005.

5.ed5 Qd5 6.Nc3 Qe6 7.Bd3 a6 8.Qe2 Qg4 9.f4 (9.f4 Bd6 10.fe5 Qe2 11.Nge2 Be5 12.0-0+=). NZ cricketer – gash, ChessWorld.net, 2005.

5.Nc3+= c6 6.Nf3 g5 7.h3 Bg7 8.b5 0-0 (8...f5 9.a4+=) 9.Bc4+/– Nf7 10.a4 a6 11.Qe2 ab5 12.ab5 Ra1 13.Ba1 Kh8 14.Qe3 Nd6 15.Qc5 (15.Bb3 Nb5 16.Nb5 cb5+=) 15...Re8 (15...b6 16.Qb4+=) 16.Be2 (16.Bd3 cb5 17.Nb5 Nb5 18.Qe7 Re7 19.Bb5 d6+=) 16...cb5+= 17.Nd5 (better is 17.Nb5 Nb5 18.Qe7 Re7 19.Bb5+=) 17...Ne4?? (better is 17...Na6 18.Qb6 Qe6+=) 18.Qe7+– (< 18.Ne7 Nc5 19.Nf5 d5–/+) 18...Re7 19.Ne7 Nc6 (19...Nd6+–) 20.Nc8 Nb4 21.Bd1 f5 (21...d5 22.d3 Nc5 23.d4+–) 22.Be5 Be5 23.Ne5 g4 (23...d5 24.d3 Nc3 25.Nf7 Kg7 26.Ng5+–) 24.hg4 fg4 25.Rh4 Nf6 26.Ng4 Ng4 27.Rg4 h5 28.Rb4 d5 29.Bh5 d4 30.Rb5 d3 31.cd3 Kh7 32.Rb6 Kg7 33.d4 1–0. market (2280) – NN, GameColony.com, 2002.

5.Nf3 d6 6.Bc4 Be6 7.Qe2 Nc6 8.Nc3 Bc4 9.Qc4 0-0-0 (9...Qd7 10.b5 Ne7 11.d4+=) 10.Nd5 (10.b5!? Na5 11.Qa4+/–) 10...Qd7+= 11.b5 Na5 (11...Ne7 12.d4+=) 12.Qc3 b6 13.d4 c6 14.Rd1 (14.bc6 Qc6 15.Ne3 Qc3 16.Bc3 Nb7+/–) 14...Kb7? (14...Qg4!?+=) 15.Nb4 (15.bc6 Nc6 16.0-0 f5+/–) 15...Rc8 (15...cb5 16.de5 fe5 17.Qd3+/–) 16.bc6 (16.de5 Qe8 17.ef6 Qe4 18.Qe3 Qe3 19.fe3 gf6 20.Bf6 Rg8+/–) 16...Nc6+/– 17.Qd3 ed4 18.Qa6 (18.Nc6 Qc6 19.Nd4 Qc4+/–) 18...Ka8 19.Nd5 (worse is 19.Bd4 Nb4 20.ab4 d5+=) 19...Qb7?? (better is 19...Kb8 20.Bd4 Re8+/–) 20.Nb6!+– Kb8 (20...Qb6 21.Qc8 Pinning (21.Qc8 Deflection; 21.Qc8 Overloading)) 21.Qb7 Kb7 22.Nc8 Kc8 23.Nd4 (23.Nd4 Kd7 24.Nc6 Kc6 25.Bd4+–) 1–0. Pietrzak,Wieslaw – Pietrzak,Janusz, Poland, 2000.

4.a4 b6 5.e3 Bb7 6.c4 d5 (6...Bb4 7.Qg4 Qe7 8.Qh5 g6 9.Qe2=) 7.Nf3 (7.cd5 Qd5 8.Nc3=) 7...d4 (better 7...c5!?=) 8.ed4+- ed4 9.Nd4 Bc5 (9...Qe7 10.Qe2+-) 10.Nf3 (10.Qh5 g6 11.Qe2 Qe7+-) 10...Ne7 (10...Qe7 11.Qe2+-) 11.d4 Bb4 12.Bc3 (12.Nc3 Ra7+-) 12...Qd6 (better 12...Bc3 13.Nc3 Bf3 14.Qf3 Qd4+-) 13.Qb3 (better 13.d5+-) 13...0-0?? (13...Bf3 14.Bb4 Qd4 15.Qf3 Qa1 16.Qa8 Qb1 17.Ke2 Nec6-/+) 14.Bb4 (better 14.c5 Bd5 15.cd6 Bb3 16.Bb4 ab4 17.Nbd2 (17.dc7?! Nd7+-) 17...Ra4 18.Nb3 Ra1 19.Na1 cd6 20.Nc2+-) 14...Qb4+- 15.Qb4 ab4 16.Be2 c5 (16...Ng6 17.c5+-) 17.bc6 (17.dc5 bc5 18.Nbd2 Ng6+-) 17...Nbc6 (17...Bc6 18.Bd1+-) 18.d5+- Ne5 19.0-0 Rac8 (19...Nd7!? 20.Nbd2 Rfe8 21.Bd1+-) 20.Ne5 fe5 21.Nd2 Nf5 (better 21...Nd5 22.cd5 Bd5+-) 22.Rab1 Nd4 23.Bd3 b3 24.Nb3 (24.Rfe1 Ra8 25.Re5 Ra4+-) 24...Nb3 (24...e4 25.Nd4 (25.Be4?! Ne2 26.Kh1 Nc3+-) 25...ed3 26.Ne6 (26.Rb6 Rc4 27.Ne6 Rfc8+=) 26...Rc4 27.Nf8 Kf8 28.a5+-) 25.Rb3 Rfd8 (25...Ba6 26.Rc1 Rf6+-) 26.Rb6 Ba8 (26...e4 27.Be2 (worse 27.Rb7 ed3 28.Rb4 Re8+-; worse 27.Be4 Rc4 28.f3 Ba8+-) 27...Ba8 28.a5+-) 27.Rfb1 (27.Re1 Re8+-) 27...g6 (27...e4 28.Be2+- (worse 28.Be4 Rc4 29.R6b4 Rb4 30.Rb4 Kf7+-)) 28.a5 Rc5 (28...e4 29.Be2+-) 29.a6 Ra5 (29...Kg7 30.Rb8 Rb8 31.Rb8 Bd5 32.cd5 Rd5 33.Rb7 Kh6 34.Bf1+-) 30.Rb8 Rb8 (30...Rf8 31.Rf8 Kf8 32.Rb8 Ke7 33.Ra8+-) 31.Rb8 (31.Rb8 Kg7 32.Ra8+-) 1-0. RichardSommer (2125) - tomskiykedr (2125), lichess.org, 2020.

4.a4 Bc5 5.e3 d5 6.d4 Bb4 7.c3+= Qd6?? 8.cb4+– Qb4 9.Qd2 Qd6 10.de5 fe5 11.Nf3 h6 12.Be5 Qb6 13.Nc3 Bg4 14.Nd5 Qc5 15.Rc1 Qa3 16.Nc7 Kf7 17.Bd6 Qc1 18.Qc1 Nf6 19.Bc4 Be6 20.Be6 Kg6 21.Qc2 Kh5 22.Qf5 g5 23.Bf7# 1–0. Clay56 – MARYMARY, ChessWorld.net, 2010.

4.a4 d5 (---> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.a4 a5).

4.c4 a4 5.e3 d6 6.Be2 Be6 7.Nf3 Qe7 (7...d5 8.cd5 Bd5 9.0-0=) 8.0-0 Qf7 9.Qc2 d5 (9...Qg6 10.Qg6 hg6 11.d4+=) 10.cd5+/– Bd5 11.Nc3 Bf3 12.Bf3 (12.gf3?! a3 13.Bc1 Qg6 14.Qg6 hg6=) 12...Ra7 (12...a3 13.Bc1 c6 14.d4+/–) 13.Nd5 (better is 13.Na4 c6 14.d4+–) 13...a3?? (better is 13...Kd8+–) 14.Nc7 (14.b6 Ra8 15.Nc7 Kd8 16.Na8 ab2 17.Qc7 Qc7 18.bc7 Ke7+–) 14...Kd7 (14...Kd8 15.b6 Ra5+–) 15.b6 ab2 (15...Ra5 16.Bg4 f5 17.Bf5 Ke7+–) 16.ba7 ba1Q 17.Ra1 (17.ab8N Kd8 18.Qd3 Kc8 19.Ra1 Qc7+–) 17...Nc6 18.a8Q Bb4 19.Bc6 bc6 (19...Kd6 20.Qd8 Qd7 21.Qd7) 20.Qcc6 1–0. DEFFM – GuestMBHY, freechess.org, 2017.

4.e3 a4 5.a3 Ra5 (5...Ne7 6.d4 ed4 7.Bd4=) 6.c4 (better is 6.d4 d6 7.Bd3+=) 6...c6 (6...d5 7.cd5 Qd5 8.Nc3+=) 7.Nc3 (7.Be5!? d6 8.Bc3+/–) 7...cb5 (7...Ne7 8.d4 ed4 9.ed4+= (9.Na4?! de3 10.Bd4 ef2 11.Kf2 Qc7+=)) 8.cb5+/– Qb6? (8...Nh6 9.Rc1+/–) 9.Na4 (9.Nd5!? Qd6 10.Rc1 Nc6+–) 9...d5?? (better is 9...Qd8+/–) 10.Nb6+– (10.Nb6 Bf5 11.Qc1+–) 1–0. GuestPBXT – GuestVDJV, freechess.org, 2016.

4.e3 g6 5.Nf3 Bg7 6.d4 e4 7.Nfd2 f5 8.c4 c6 9.Nc3 d5 10.a4 (10.bc6 bc6 11.cd5 cd5 12.Bb5 Bd7+/–) 10...Be6 11.cd5 Bd5 12.Nd5 cd5 13.Rc1 Nd7 14.Ba3 Bf8 15.Qb3 Ngf6 16.Be2 Ba3 17.Qa3 Qe7 18.Qe7 Ke7 19.Nb3 b6 20.Kd2 Rhc8 21.f3 (21.Rc6 g5+=) 21...Kd8 22.h3 Rc1 23.Kc1 Rc8 24.Kd2 h5 25.h4 Ke7 26.Nc1 Nf8 27.Bd1 Rc4 28.Bb3 Rc7 29.Ne2 Ne6 30.Ng3 ef3 31.gf3 f4 32.Nf1 (32.Ne2!? fe3 33.Ke3=) 32...fe3+= 33.Ne3 Exerts pressure on d5 33...Nd4 34.Nd5 Nd5 35.Bd5 Rd7 36.Bc6?? (better is 36.Be4 Nf3 37.Ke3+=) 36...Nc6–+ 37.Ke3 Nb4 (37...Nd4 38.Kf2–+) 38.Kf4 (38.Rc1 Rd3 39.Ke4 Ra3–+) 38...Kf6 39.Re1 (39.Kg3–+) 39...Nd3 (39...Nd3 40.Ke3 Ne1–+) 0–1. Boysan,Ferit – Rafael, Internet Section, 2004.

4.e4 d6 5.Bc4 A) 5...Nd7 6.Bg8 Rg8 7.Qh5 g6 8.Qh7 Rg7 9.Qh4+=; B) 5...f5 6.Qf3 (6.ef5 Bf5 7.Qf3 Ne7 8.Nc3 c6 9.Bd3=) 6...Qh4 7.d3 Nh6 8.Nc3 c6 9.Bc1+=; C) 5...Nh6 6.Nf3 Nd7 7.0-0 Nb6 8.Be2 d5 9.ed5+=; D) 5...Ne7 6.d4 (6.Qh5 g6 7.Qh4 Nd7 8.Nf3 h5 9.Be2=; 6.Nf3 c6 7.bc6 bc6 8.Nc3 d5 9.ed5=) 6...Nd7 7.Nf3 Nb6 8.Bd3 Bg4 9.a4+=.

4.e4 Qe7 5.Bc4?? d6?? 6.Nc3+/– Be6 7.Nd5 Bd5 8.Bd5 c6 9.bc6 bc6 10.Bg8 Rg8 11.Qh5 g6 12.Qh3 Nd7 13.Ne2 Nc5 14.d3 Ne6 15.0-0 Rb8 16.Ba3 c5 17.Rab1 Kf7?? 18.Rb8+– Bh6 19.Rfb1 Rb8 20.Rb8 Bd2 21.Qh7 Ng7 22.Qg8 1–0. bratek55 – waldi1962, internet, 2011.

4.f4 a4 5.fe5+= Ra5 6.e4 Rb5?? (better is 6...d6 7.ed6 Bd6+/–) 7.Bb5+– c6 8.Ba4 Qa5 (8...d6 9.ed6 Bd6 10.Qh5 g6 11.Qh4+–) 9.Bb3 fe5 (9...d6 10.Qh5 g6 11.Bf7 Kd8 12.Qf3+–) 10.Qh5 g6 (10...Kd8 11.Bg8 Rg8 12.Qh7 Qb5+–) 11.Qe5 Qe5 12.Be5 Nf6 13.Bf6 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.f4 ef4 5.Nh3 Bd6 +=.

5.e3 Bb7 6.a4 Bb4 7.Nf3 d6 8.Be2 Ne7 9.0-0 0-0 10.d4 c5 11.de5 (11.bc6 Nbc6 12.Bd3 Rc8+=) 11...fe5 (11...de5 12.Qc2=) 12.Nc3 (12.Ng5 Rf5 13.f4 h6+=) 12...Bc3= 13.Bc3 Nd7? (better 13...Nf5=) 14.Qd6+- Rf6 15.Qd2 Qc7 (15...Nf5 16.Rad1 Rd6 17.Qb2+-) 16.Rad1 (16.Rad1 Bf3 17.Bf3+- (17.gf3?! Rd8+-; 17.Qd7?! Qd7 18.Rd7 Be2 19.Re7 Bf1 20.Kf1 Kf8 21.Re5 Rd6+=)) 1-0. BeepBeepImAJeep (2240) - chessstrategy (2360), lichess.org, 2015.

5.e3 Bb7 6.Nc3 Bb4=.

5.e3 Bb7 6.Nf3 Ne7 7.d4 d5? (7...ed4 8.ed4 Ng6 9.Bd3 Bb4 10.Nc3 Qe7 11.Kd2=) 8.Nc3 (8.de5!? Nd7+-) 8...ed4 9.ed4 (9.Qd4 c5 10.Qd3 dc4 11.Qd8 Kd8+/-) 9...dc4 (9...Qd6!?+=) 10.Bc4+/- Nd7 (10...Ra7 11.d5+/-) 11.Qb3 (11.0-0!?+-) 11...Qc8+/- 12.Bf7 White intends d5 12...Kd8 13.Be6 (13.Qd1 Nf5+=) 13...Qb8 (13...Bf3 14.gf3 Qb7 15.Ba3+=) 14.0-0 (better 14.d5+/-) 14...g6? (better 14...Bf3!? 15.gf3 Qa7+/-) 15.d5 (15.Bd7 Kd7 16.Rfe1 Ke8+-) 15...Bg7 16.Nd4 Nc5 17.Qc4 Ne6?? (17...Nc8 18.Bc8 Kc8 19.Ne6+-) 18.de6 (better 18.Ne6 Kd7 19.Ng7+-) 18...Qc8 (18...Kc8 19.Ba3 Bf8 20.Nde2+-) 19.Rfe1 c5 (better 19...Ke8+-) 20.bc6! Nc6 (20...Bc6 21.Nc6 Double attack; 20...Nc6 21.Ndb5 Combination) 21.Nc6 (better 21.Ndb5 Ke7 22.Nd5 Kf8 23.Nb6+-) 21...Qc6 22.Rad1 Ke8 23.Qb5 Rd8 24.Ba3 White plans e7 (better 24.Nd5 Qb5 25.Nc7 Ke7 26.Nb5+-) 24...Bf8?? (better 24...f5 25.Nd5 Rc8 (25...Qb5?? 26.Nc7) 26.Qb6 Qb6 27.Nb6 Rc3+-) 25.Rd8 (better 25.e7 Rd6 26.Rd6 Kf7 27.e8Q Kg7 28.Re7 Be7 29.Qe7 Kh6 30.Bc1 g5 31.Qg5) 25...Kd8 26.Qc6 Bc6 27.e7 (better 27.Bf8 Ke8 28.Bg7 Rg8 29.Bf6 Rf8+-) 27...Be7 28.Be7 (28.Re7?! Re8 29.Re8 Ke8+-) 28...Kd7 29.Bf6 Re8 30.Re8 Ke8 31.f3 (31.a4 Kd7+-) 31...Kf7 (31...b5 32.Ne4+-) 32.Bd4 (better 32.Bd8!? b5 33.Ba5 Ke6+-) 32...b5 33.Bb6 (33.Ne4 b4+-) 33...b4 34.Nb1 a4 35.Ba5 b3 36.ab3 ab3 37.Kf2 Bd5 38.Ke3 Be6 (38...Ke6 39.Kd4+-) 39.Kd4 (better 39.Nd2+-) 39…Kf6 (39...Kf6 40.Nd2 g5+-). ClayPigeons (2105) - poisoned_pawn22 (2070), Rated Bullet game, lichess.org, 2021.

5.Nc3 b6 A) 6.e4 Be7 (6...Bb7 7.Be2 Bd6 8.Bh5 g6 9.Be2 Ne7+=; 6...Nh6 7.Qh5 g6 8.Qh4 Bg7 9.Nf3 Bb7+=; 6...d6 7.Be2 Nh6 8.Nd5 Be7 9.Bh5 g6+=; 6...Bd6 7.Qh5 g6 8.Qf3 Bb7 9.Qd3 Bf8+=) 7.Be2 Nh6 8.Nf3 0-0 9.d3 d6+=; B) 6.Nf3 Bb7 (6...Nh6 7.e3 Bb7 8.Bd3 Nf7 9.Qc2 Nd6+=; 6...Be7 7.e3 Bb7 8.Qc2 g5 9.Be2 Nh6+/–; 6...Bd6 7.e3 Ne7 8.Bd3 0-0 9.0-0 Bb7+=; 6...d6 7.e3 Be6 8.Be2 Be7 9.d4 Nh6+/–) 7.e4 Ra7 8.Be2 Bd6 9.0-0 Ne7+=.

5.Nc3 Bd6 A) 6.e4 Be7 (6...Ne7 7.Qh5 Ng6 8.Be2 0-0 9.Nh3 a4+=; 6...Nh6 7.Qh5 Nf7 8.Nf3 Be7 9.Nd5 0-0+=; 6...Bc7 7.Qg4 g6 8.Nd5 d6 9.Qf3 Be6+=; 6...b6 7.Qh5 g6 8.Qf3 Bf8 9.Be2 Bb7+=) 7.Nd5 d6 8.b6 Na6 9.Bc3 f5+=; B) 6.e3 Bc7 (6...Nh6 7.Bd3 0-0 8.Be4 f5 9.Bd5 Kh8+=; 6...f5 7.e4 Nf6 8.ef5 0-0 9.Bd3 Be7+=) 7.Nd5 d6 8.Bd3 f5 9.Qa4 b6+=.

5.Nc3 Be7 A) 6.Nd5 Nh6 (6...d6 7.b6 Na6 8.Bc3 f5 9.Ba5 Nf6=; 6...a4 7.e4 a3 8.Bc1 d6 9.b6 Kf7+/–; 6...b6 7.e3 Bb7 8.Qf3 Ra7 9.Bd3 Bd6+/–; 6...Kf7 7.e4 d6 8.f4 Nd7 9.Qh5 g6+/–) 7.e4 0-0 8.Nf3 d6 9.d3 f5=; B) 6.e3 Nh6 (6...d6 7.d4 Nh6 8.Bd3 0-0 9.Nf3 Nd7+=) 7.Bd3 d6 8.Be4 f5 9.Bd5 Ng4+=.

5.Nc3 Ne7 A) 6.e4 g6 (6...Ng6 7.Nd5 Be7 8.b6 Bd6 9.Ne2 0-0+=; 6...d6 7.Be2 Ng6 8.Nd5 Ne7 9.Ne3 a4+=; 6...f5 7.Bd3 d6 8.Nf3 g6 9.ef5 Nf5+=; 6...Qb6 7.Nf3 d6 8.Be2 Qc7 9.0-0 Be6+/–) 7.Nf3 Bg7 8.Be2 d6 9.0-0 0-0=; B) 6.e3 d5 (6...d6 7.d4 cd4 8.ed4 Bf5 9.Nf3 Nd7+=) 7.d4 cd4 8.ed4 ed4 9.Qd4 Be6=.

5.Nc3 f5 A) 6.e4 Ne7 (6...d6 7.Bd3 fe4 8.Ne4 Nf6 9.Nf3 Nh5+=; 6...Nh6 7.Nd5 d6 8.Bd3 Be6 9.ef5 Bd5+=; 6...Nf6 7.ef5 Be7 8.Nf3 0-0 9.Ne5 d6+/–; 6...Be7 7.ef5 Nf6 8.Nf3 0-0 9.Ne5 d6+/–) 7.Bd3 d6 8.Nf3 g6 9.0-0 Bg7=; B) 6.Nd5 d6 7.g3 Ne7 8.Ne3 a4 9.Bg2 g5=; C) 6.e3 d6 (6...Nf6 7.Be2 d5 8.cd5 Nd5 9.Nf3 Nc3+=; 6...Bd6 7.e4 Nf6 8.ef5 0-0 9.Bd3 Be7+=) 7.Be2 Be7 8.d4 Nd7 9.Nh3 Ngf6+=.

5.Nc3 Kf7 6.e3 (6.e4; 6.Nf3; 6.Nh3) 6...d6 (6...Ne7 7.d4 cd4 8.ed4 ed4 9.Qd4 Qe8+/–; 6...g6 7.Nf3 a4 8.Na4 Nh6 9.Nc3 d6+–; 6...f5 7.Qf3 d6 8.Bd3 Ne7 9.g4 a4+/–; 6...Nh6 7.Bd3 d6 8.Be4 g6 9.Nf3 Nd7+/–) 7.Bd3 Ne7 8.Qf3 Ra7 9.Nh3 g6+=.

5.Nc3 Nh6 6.Nf3 Be7 7.e3 d6 8.Be2 0-0 9.0-0 Be6 +=.

5.e3 d5 6.d4 cd4 7.ed4 e4 (7...Bb4 8.Bc3 Qe7 9.de5 Qe5 10.Qe2=) 8.Ne2 (8.Qh5 g6 9.Qd5 Qd5 10.cd5 Nd7+=) 8...Be6 9.Qc2 (9.Nf4 Bf7 10.cd5 Qd7+=) 9...f5 (9...Qc7 10.Nec3+=) 10.Ng3 (10.Nf4!? Bf7 11.cd5+=) 10...Nf6 11.Ba3 (11.c5 f4 12.Ne2 g5=) 11...Ba3 12.Na3 dc4 (12...0-0 13.Rc1=+) 13.Bc4= Nd5 14.0-0 0-0 15.Rfc1 Nd7 (15...Qd6 16.Bd5 Bd5 17.Nc4+=) 16.Bd5 (better 16.Ne4!? Qe7 17.Re1+/-) 16...Bd5= 17.Qc7 Qe7 18.Rc2 (18.Nc4 f4 19.Ne2 Qe6 20.Na5 f3-/+) 18...f4 19.Nf1 Rfc8 (better 19...Qa3 20.Qd7 Rad8-/+) 20.Qf4?? (better 20.Qc8 Rc8 21.Rc8 Kf7 22.Nc4=) 20...Qa3-+ 21.Rc8 (21.Qc1 Qf8-+) 21...Rc8 22.h3 (22.Ng3 Qb2 23.Rd1 Rf8-+) 22...Nf6 23.Ne3 Rc1 (better 23...Qb2 24.Re1 Qb4-+) 24.Rc1 Qc1 25.Kh2 h6?? (25...Ba2 26.Qb8 Kf7 27.Qb7 Kg6 28.b6-/+) 26.Qb8?? (better 26.Nd5 Qf4 27.Nf4+/-) 26...Kh7-+ 27.Nd5 Nd5 28.Qb7 Qf4 29.Kg1 (better 29.Kh1 Nf6 30.Qc8 Qf2 31.b6-+) 29...Nf6?? (29...e3 30.fe3 Qe3 31.Kh1 Qd4 32.Qc6-+) 30.d5? (better 30.Qc8=+) 30...e3-+ 31.fe3 Qe3 32.Kf1?? (32.Kh1 Qe1 33.Kh2 Qe5 34.Kh1 Nd5-+) 32...Qd3 (32...Ne4 33.Qg7 Kg7 34.b6 Qf2) 33.Kg1-+ Qd5 (33...Nd5!? 34.Qc6-+) 34.Qd5 Nd5 35.a4? (better 35.Kf2-+) 35...Nb6 36.Kf2 Na4 37.Ke3 (37.Ke1 Nb6-+) 37...Nb6 (better 37...Nc3!? 38.b6 Nd5 39.Kd4 Nb6 40.Kc3-+) 38.Kd3 a4 39.Kc3 Kg6 40.Kb4 (40.g3 Kf5 41.Kd4-+) 40...Kf5 41.g3 Ke4 42.Ka5 (42.g4 Kf4 43.g5-+) 42...a3 43.Kb6 a2 44.Kc7 a1Q 45.b6 Qe5 46.Kc8 Qg3 (46...Qc5 47.Kd8 Qd6 48.Kc8 Qc6 49.Kb8 Qb6 50.Kc8 Ke5 51.Kd7 Qb7 52.Kd8 Ke6 53.g4 Qd7) 47.b7 Qh3 48.Kd8 Qb3 49.Kc7 Qb7! 50.Kb7 g5 51.Kc7 g4 (51...g4 52.Kd7 h5 53.Kd6 h4 54.Kc5 h3 55.Kc4 g3 56.Kc5 h2 57.Kc4 h1Q 58.Kb5 g2 59.Kb4 Qb1 60.Kc5 g1Q 61.Kd6 Qb7 62.Ke6 Qgb6) 0-1. Antares_Sco (1835) - ORS1962 (1985), Eastern SuperBlitz Arena, lichess.org, 2017.

5.e4 a4 6.Bd3 d6 7.Bc2 Be6 8.d3 a3 9.Bc1 g6 +=.

5.e4 Qc7 6.a3 g6 7.Nc3 Ne7 8.Be2 Bh6 9.Nf3 0-0 +=.

5.e4 d6 6.Nc3 Be6 7.Nd5 Ne7 8.Bd3 Nd7 9.Nh3 g6 =.

5.e4 Be7 6.Bd3 d6 7.Nc3 Nd7 8.Nge2 Nb6 9.0-0 Nh6 +=.

5.e4 Ne7 6.Nf3 g6 7.Nc3 Bg7 8.Be2 d6 9.Qc2 0-0 =.

5.e4 g6 6.Bd3 Qb6 7.Nf3 Ne7 8.Be2 Bg7 9.Nc3 0-0 =.

5.e4 Nh6 6.Bd3 d6 7.Nc3 Nd7 8.Nge2 Be7 9.0-0 Nb6 +=.

6.a3 Nd7 (6...Be7 7.e4 f5 8.ef5 Bf5 9.Qf3 Bc8+=; 6...Be6 7.e4 Nd7 8.Be2 Nh6 9.d3 f5+=; 6...f5 7.e3 Be6 8.Nh3 Be7 9.d4 cd4+=) 7.Nf3 Nb6 8.e4 Be7 9.Be2 f5=.

6.Rb1 Nd7 (6...f5 7.e4 Nf6 8.Bd3 fe4 9.Ne4 Be7=; 6...Be7 7.e3 f5 8.d4 Nf6 9.de5 de5+=; 6...Ne7 7.e4 Nd7 8.Be2 Ng6 9.Bh5 Nb6+=; 6...Be6 7.e4 Nd7 8.Be2 Kf7 9.Nf3 Be7+=) 7.e4 Nb6 8.Be2 f5 9.Bd3 Nh6=.

6.e3 Be6 (6...Ne7 7.d4 cd4 8.ed4 Qc7 9.Nf3 Nd7+=; 6...Be7 7.d4 Nh6 8.Bd3 cd4 9.ed4 Be6+=; 6...Nd7 7.d4 ed4 8.ed4 Qe7 9.Qe2 Nb6+=; 6...Bf5 7.d4 Nd7 8.de5 Ne5 9.f4 Bg4+=) 7.Nf3 (7.Qh5 g6 8.Qf3 Ra7 9.d4 Nh6+=) 7...Nd7 8.d4 Nb6 (8...cd4 9.ed4 Rc8 10.d5=) 9.d5+/– Bg4 10.h3 Bh5 11.g4 Bg6 12.Nh4 Bf7 13.Qc2 g6 14.0-0-0 Bg7 15.f4 f5 16.Qf2 ef4 17.ef4 Ne7 18.Bd3 Qd7 19.gf5 gf5 20.Kb1 (20.Na4 Na4 21.Bg7 Rg8+–) 20...Nbc8 21.Rde1 Kd8 (21...Bg6 22.Re6 Kd8 23.Rhe1+–) 22.Nd1 Bb2 23.Qb2 (worse is 23.Kb2 Nb6+/–) 23...Rg8 24.Qf6 Bg6 25.Re6 Kc7 (25...Qe8+–) 26.Rhe1 (worse is 26.Nf5 Nf5 27.Bf5 Nb6+–; 26.Bf5?! Nf5 27.Nf5 Rg7=) 26...Re8 27.Ng6 (better is 27.Bf5!? Nf5 28.Ng6+– (28.Nf5?! Nb6 29.Re7 Bf5 30.Kc1 Nc4+–)) 27...hg6+/– 28.h4 a4 (28...Qd8 29.Qf7+/–) 29.a3 (29.h5 gh5 30.Bf5 Qd8+–) 29...b6 (29...Qd8!?+/–) 30.Qg5 Kb8 31.h5 gh5 32.Bf5 Rf8 33.Bc2 (33.Re7?! Qf5 34.R7e4 Ra7 35.Qf5 Rf5+/–) 33...Ra7 34.f5 Ng8 35.Qh5 Qg7 36.Rg6 Qd4 37.Qg4 (37.Re4 Qd2 38.Qg5 Qg5 39.Rg5 Nf6+–) 37...Qh8 38.Qg3 Rd7 39.Ree6 (39.Ba4?! Nge7+/–) 39...Kc7 (39...Nge7 40.Rd6 Nd6 41.Rd6+–) 40.Ne3 (40.Ba4?! Nge7+–) 40...Nf6 41.Qg5 (41.Ba4?! Ne4 42.Re4 Qh1 43.Bd1 Qe4 44.Bc2 Qh1 45.Qg1 Qh8+=) 41...Nh7 42.Qg1 Qc3 43.Qc1 (43.Ba4 Qa3 44.Qd1 Ne7+=) 43...Rff7 44.Ba4 Qd4 45.Bc2 Rde7 (45...Qc3 46.Rg1+–) 46.Rg4 (46.f6 Nf6 47.Nf5 Qc4 48.Ne7 Ne7 49.Rgf6 Rf6 50.Rf6 Nd5 51.Rf7 Kb8 52.Rf8 Ka7+–) 46...Qc3 47.Nd1 Qh3 48.Ne3 Nf6 49.Rg6 Nd7 50.Rh6 Qg3 (50...Qf3+–) 51.f6 (51.f6 Nf6 52.Nf5+– (52.Rhf6?! Rf6 53.Nf5 Qc3 54.Rf6 Re1 55.Rf7 Kb8 56.Qe1 Qe1 57.Kb2 Qe2+/–)) 1–0. Zschalich,Arndt – Geyer,W, corr DDR–ch M776, 1985.

6.e4 Be6 (6...Be7 7.Nd5 f5 8.Bd3 Nf6 9.Nf6 Bf6+=; 6...f5 7.Bd3 fe4 8.Ne4 Nf6 9.f4 Nbd7+=; 6...Nh6 7.Qh5 g6 8.Qh4 Be6 9.Nf3 Bg7+=; 6...Nd7 7.Nf3 Be7 8.Nh4 Nh6 9.Qh5 Nf7+=) 7.Be2 Nh6 8.d3 Nd7 9.Bc1 g6+=.

6.Nf3 Be7 (6...f5 7.e3 e4 8.Ng1 Nf6 9.d3 Nbd7+=; 6...Nd7 7.e4 Kf7 8.Be2 Nb6 9.Qc2 Be6+=; 6...Be6 7.e3 Nd7 8.d4 cd4 9.ed4 Rc8+=; 6...Nh6 7.Nd5 Nd7 8.e3 Nb6 9.Nb6 Qb6+=) 7.e3 f5 8.d4 e4 9.Nd2 Nf6+=.

6.g3 Nd7 7.Bg2 f5 8.d3 Ngf6 9.Nf3 Be7 10.0-0 0-0 11.Qb3 Nb6 12.Qc2 Qe8 13.e3 Bd7 (13...a4 14.a3+=) 14.Nd2+= Ra7 15.f4 Qg6 16.Rae1 Ng4 17.Nf3 Bf6 18.fe5 de5 19.h3 Nh6 20.e4 Qg3 21.ef5 (better 21.Ne2!? Qg6 22.Ne5 Be5 23.Be5+=) 21...Bf5=+ (worse 21...Nf5 22.Ba3 e4 23.Ne4+-) 22.Ne2 Qg6 23.Ne5 (23.Ne5 Be5 24.Be5=) 1-0. forsetinn (2355) - marekt (2135), gameknot.com, 2015.

5.e3 Ne7 6.d4 ed4?? (6...Bb4 7.Nd2 ed4 8.Bd4+=) 7.ed4?? (better is 7.Qh5 Ng6 8.Qc5 de3 9.Qe3 Kf7 10.Qd2+–) 7...Bb4= 8.Nd2 0-0 9.Ngf3 d5 10.c5 Nf5 11.Be2 Re8 12.0-0 Qe7 13.Re1 Qf7 14.a3 Bd2 15.Qd2 Bd7 16.a4 c6 17.Bd3 Ne7 18.Bc3 Nf5 (18...Bg4 19.Re3+/–) 19.Qc2 g6 20.Re8 Qe8 21.Re1 Qf7 22.g4 (22.bc6!? Nc6 23.Qb3+–) 22...Ng7+/– 23.Qe2 (23.h3 Ne6+/–) 23...Kf8 (better is 23...Bg4 24.Qe3 cb5 25.Bb5 Nc6=) 24.h3+/– Be6 25.Bd2 Nd7 26.Nh4 Re8 27.Qf3 f5 28.gf5 Nf5 29.Nf5 Bf5 30.Bf5 Qf5 31.Re8 Ke8 32.Qf5 gf5 33.Ba5 Nf6 34.f3 Kd7 35.Bd2 Ne8 36.b6 Ng7 37.Kg2 Ne6 38.Be3 f4 39.Bf2 Ng7 40.h4 h5 41.Kf1 Nf5 42.Ke2 Ng7 43.a5 Ne6 44.Kd3 Kc8 45.Kc3 Kd7 46.Kb4 Kc8 47.Bg1 Kb8 48.Bh2 (48.Kc3 Kc8+/–) 48...Kc8 (48...Nd4 49.Bf4 Ka8 50.Bg3+=) 49.Bg1 Kd7?? (49...Kb8 50.Kc3+/–) 50.Bf2 (50.a6 ba6 51.Ka5 Kc8 52.Ka6 Kb8+–) 50...Kc8+/– 51.Kc3 Kd7 52.Kd3 Kc8 53.Bg1 ½–½. Fournier,Frederic (1995) – tinov (2000), Echecs21, 2003.

5.e3 Ne7 6.Nf3 0-0 7.Qb3 (7.d4 Bb4 8.Nc3 ed4 9.Nd4 a4+=) 7...d5 (7...a4 8.Qc2=) 8.cd5= Qd5?? (better 8...a4 9.Qc4 Qd6+=) 9.Bc4+- Be6 10.Bd5 Bd5 (10...Nd5 11.0-0 Nd7 12.d4+-) 11.Qc2 c6 1-0. ClayPigeons (2135) - TxATC (1985), Rated Bullet game, lichess.org, 2019.

5.e4 Qb6 6.d4 Bb4= 7.Nd2 ed4 8.a3 Bd2 9.Qd2 c5 10.Bd3 d6=+ 11.Ne2 Be6 12.Nf4= Bf7 13.0-0 Ne7 14.Nd5 Nd5 15.ed5 0-0 16.Rae1 Nd7 17.f4 g6 18.Re7 Qd8 19.Rfe1+= Re8 20.Re8 Be8 21.Qe2 Bf7 22.h4 f5 23.h5 Qh4 24.hg6 hg6 25.Qf2 Qf2 26.Kf2 Nf6 27.Re7 Rb8 28.Bc1 ½–½. MarcosRamos (1745) – binumer (1655), internet, 2007.

5.e4 d5 6.cd5 cd5 7.ed5 (7.Nc3 de4 8.Ne4 Be6 9.Qe2 Nd7 10.f4 Nh6=; 7.Qh5 g6 8.Qh4 de4 9.Qe4 Bc5 10.f4 Qb6=) 7...Ne7 (7...Qd5 8.Nc3 Qd6 (8...Qd8 9.Bc4+= Bf5 10.Rc1 Bc5+=) 9.Bc4 Bf5 10.Rc1 Ne7+=; 7...Bf5 8.Nc3 Bb4 9.a3 Bd6 10.Nf3 Nd7+/–; 7...Nh6 8.Nc3 Bc5 9.Nf3 Nf5 10.Ne4 Be7+=; 7...Bc5 8.Bc4 Nd7 9.d4 Bb4 10.Bc3 Nb6+=) 8.Nc3 (8.d4!?+= Nd5 9.de5 Bb4 10.Nd2 Nc3+=) 8...Nd5= 9.Nf3 (9.Qh5 g6 10.Qh4 Nf4+=) 9...Nb4 (9...Be6 10.a3 Nc3=) 10.a3 (10.Qb1 Bc5=) 10...Nd3 11.Bd3 Qd3 12.Qe2 Bf5 13.Rc1 (better is 13.Qd3!? Bd3 14.Nd5+=) 13...Nd7+= 14.Nh4 Qe2 15.Ke2 Be6 16.d3 Be7 17.Nf3 0-0 (17...Nc5 18.Rcd1+=) 18.Nd2 (18.d4 Nb6 19.Nd1 Bc4 20.Ke1 Bb5 21.de5 Rfe8–/+) 18...Rfd8+= 19.Na4 Rac8 20.Nc4 (20.Rc8!? Rc8 21.Rc1 Rc1 22.Bc1+=) 20...e4! 21.Na5 (21.de4 Rc4) 21...ed3 22.Kd2 Rc1 23.Rc1 Ra8 24.Bc3 (24.Nb7 Ra4 25.Kd3 Ba3 26.Ba3 Ne5 27.Kd2 Ra3–+) 24...b6 (24...Ba3?! 25.Ra1 Bf8 26.Nb7–/+) 25.Nc6 (25.Nb6 Nb6 26.Kd3 Ba3–+) 25...Ba3 (better is 25...Bd6!? 26.Kd3 Ra4 27.Bb4 Nc5 28.Ke2–+) 26.Nb2 Bb2 27.Bb2 Ra2 28.Rb1 Nc5 29.Nb4 (29.Ke3 Kf8 30.h3 d2–+) 29...Ra5 30.Nc6 Nb3 31.Kd3 (31.Kd1 Rb5 32.Bc1 Bd7–+) 31...Bf5 32.Kc3 Bb1 33.Na5 Na5 34.Kb4 Bd3 35.Bd4 Nc4 36.f3 Kf7 37.h4 Ke6 38.g4 (38.Kc3 Bf1 39.g3 Kd6–+) 38...Kd5 39.Bf2 (39.Kc3 Be2 40.g5 Bf3 41.gf6 gf6 42.Bf6 Kc5–+) 39...Be2 40.g5 fg5 41.hg5 Bf3 42.Be1 Be2 43.Bc3 g6 44.Bf6 Kd6 (44...Ke6 45.Bg7–+) 45.Bd4 (45.Bd8 Kd7 46.Bf6 Ke6–+) 45...Kc7 (45...Ke6!? 46.Bg7–+) 46.Be5 (46.Kb3–+) 46...Ne5 0–1. Esquivel,Heriberto – Rosa Bunge,J, Mar del Plata op, 1967.

5.e4 d5 6.ed5 A) 6...cb5 A1) 7.cb5 Qd5 (7...Nh6 8.Nc3 Bc5 9.Nf3 Nf5 10.Ne4 Bb6+=; 7...Bc5 8.Bc4 Nd7 9.d4 Bb4 10.Bc3 Nb6+=) 8.Nc3 Qd6 9.Bc4 Qb4 10.Qb3 Qb3+=; A2) 7.d4 bc4 (7...Bb4 8.Nc3 ed4 9.Qd4 bc4 10.Bc4 Ne7+=; 7...ed4 8.Bd4 bc4 9.Bc4 Bb4 10.Nc3 Nh6+=) 8.de5 b5 9.d6 Be6 10.Nc3 a4+=; B) 6...cd5 B1) 7.Nf3 d4 (7...Bg4 8.Be2 dc4 9.Bc4 e4 10.Qb3 ef3+=; 7...g5 8.d4 Bb4 9.Nfd2 ed4 10.Qh5 Ke7+=; 7...e4 8.Nd4 f5 9.cd5 Qd5 10.Qc2 Qd8+=; 7...Bd6 8.cd5 Ne7 9.Nc3 Bg4 10.Be2 Bb4+=) 8.Bd3 Bc5 9.0-0 Ne7 10.Re1 0-0=; B2) 7.cd5 Qd5 (7...Bf5 8.Nc3 Bd6 9.Nf3 Ne7 10.d4 Nd7+/–; 7...Nh6 8.Nc3 Nf5 9.Nf3 Bc5 10.Bd3 0-0+=; 7...Bc5 8.Bc4 Nd7 9.d4 Bb4 10.Bc3 Qc7+=; 7...a4 8.Bc4 Nd7 9.Qh5 g6 10.Qf3 Nb6+=) 8.Nc3 Qd6 9.Nf3 Bg4 10.h3 Bh5=.

5.cd5 Qd5 6.Nc3 Qf7 7.a4 Be6 8.Nf3 Bc5 (8...Bb4 9.d4=) 9.e3 Ne7 10.Be2 (10.d4 Bd6+=) 10...0-0= 11.0-0 Nd7 12.d4 Bb4 13.Ne4 Bd5 14.Ng3 (14.Bd3 ed4 15.Bd4 c5 16.bc6 Nc6=) 14...ed4 15.Nd4 Nc5 16.Bf3 (16.Bh5 g6 17.Be2 h5=) 16...Rad8= 17.Qc2 Nb3?? (better 17...Bf3 18.Nf3 Qb3=) 18.Bd5+- Qd5 19.Qb3 (19.Nb3 Qd3 20.Rfc1 Qc2 21.Rc2 c6+-) 19...Qb3 20.Nb3 Rd3 21.Nd4 Rd8 (21...c5 22.Ne6 Rc8 23.Rad1 Rd1 24.Rd1+-) 22.Rfc1 (22.Ne6 R8d6 23.Nc7 Rd7+-) 22...c5 (22...Rc8 23.Rd1 Rd1 24.Rd1+-) 23.bc6 bc6 24.Kf1 (24.Nc6!? Nc6 25.Rc6 Kf7+-) 24...c5 25.Ke2 (better 25.Ne6 Rc8 26.Nh5+-) 25...Rd2=+ 26.Kf3 Rb2 27.Nb5 (27.Ne6 Rc8=+) 27...Rdd2 (27...Ng6!? 28.Ne4 Ne5 29.Kg3 Nd3-/+) 28.Ne4= The isolani on c5 becomes a target 28...Rdc2 29.Rc2 Rc2 30.Rd1 f5 31.Rd8 Kf7 32.Ng5 Kg6 33.h4 Rd2 (33...c4 34.Nd4 Rd2 35.Ra8=) 34.Ra8 (34.Rd2 Bd2 35.Ne6 Bb4=) 34...c4 35.Ra6 Kh5 36.g3 (36.Nd4 c3 37.Nde6=) 36...h6 (36...c3 37.Ne6 Kh6 38.Ng5 Kh5=) 37.Ne6+= Kg6 38.Nbd4 Kh7 39.h5 c3 40.Nf8 (40.Ra7!? f4 41.Nf8 Kg8 42.Ra8+/-) 40...Kg8+= 41.Ra8 Kf7 42.Nd7 Rd4 43.ed4 (43.Ne5 Ke6 44.ed4 c2=) 43...c2= 44.Ne5 Ke6 45.Nd3 Bd2 (45...Kd5!?=) 46.Ke2+= c1Q 47.Nc1 Bc1 48.Ra5 Bb2 49.Kd3 (better 49.Ra6 Kd5 50.Ra7+/-) 49...Nc6?? (better 49...Bd4 50.f3 Bf2=) 50.Ra6 (better 50.d5 Kd6 51.dc6 Kc6 52.Rf5+-) 50...Kd6 51.Kc4 Kc7 52.d5 (52.a5 f4+-) 52...Ne5+/- 53.Kb3 (53.Kb5!?+/-) 53...Bd4+= 54.f4 Nd7 (54...Ng4 55.Rc6 Kd7 56.Kc4+=) 55.Kc4+/- Bf2 56.Rc6 (56.Rg6 Nb6 57.Kb5 Nd5 58.Rg7 Kb8+/-) 56...Kd8 57.a5 Bg3 (57...Nf6 58.a6+/-) 58.Rg6 (better 58.a6!? Bf2 59.Rg6+-) 58...Bf4+= 59.Rg7 Be3 (better 59...Kc7!?+=) 60.d6+- f4?? (better 60...Nf6+-) 61.Rg8 Nf8 62.Rf8 Kd7 63.Kd5 (63.Kd5 f3 64.Rf3 Bg5 65.a6 Bc1 66.Rf7 Ke8 67.Re7 Kd8 68.a7 Be3 69.a8Q) 1-0. zembelek (2150) - amayak (2205), Rated Blitz game, lichess.org, 2013.

5.e3 Bb4 6.a3 Bc5 7.d4 ed4 8.ed4 Be7 (8...Bd6!?+-) 9.Nc3+- c6 (9...Nh6 10.Qh5 Kf8 11.Qd5+- (worse 11.Nd5 Bg4 12.Qh4 c6+-)) 10.cd5 cd5 11.Qh5 Kf8 12.Qd5 Qe8 13.Be2 Nd7 14.Nf3 Nb6 15.Qb3 Nh6 16.0-0 g6 (16...a4 17.Qa2+-) 17.d5 Kg7 (17...Bf5 18.Rfe1+-) 18.Ne4 Rf8 (18...Bf5 19.Nfg5 Be4 20.Ne4+-) 19.d6 Bd8 20.Nfg5 Bf5 (20...Nf7 21.Rfe1+-) 21.Bd3 Nf7 22.Nf6! Bf6 23.Bf6 Kf6 24.Nh7 (24.Nh7 Kg7 25.Nf8 Qf8 26.Bf5 gf5 27.Rae1 Qd6 28.Re6+-) 1-0. Silent Move (2115) - Paul89 (2060), redhotpawn.com, 2015.

5.e3 dc4 6.Bc4 Nd7 7.Qb3 Qe7?? (better 7...Nh6=) 8.Bg8+- Nc5 9.Qc4 e4? (9...Rg8 10.Qg8 Nd3 11.Kf1 Nb2 12.Qh7 Be6+/-) 10.Bd5?? (better 10.Ba3 Be6 11.Be6 Qe6 12.Qe6 Ne6 13.f3+-) 10...Nd3+/- 11.Ke2 Nb2 12.Qb3 (better 12.Qe4 Qe4 13.Be4+/-) 12...Nd3=+ 13.Nc3 Qb4 (better 13...f5=+) 14.Bf7 Kd8 15.Qd5 Qd6 (15...Ke7 16.Rb1 (16.Ne4?! Ne5 17.Bh5 Be6 18.Qc5 Kd7 19.Qb4 ab4=) 16...Qa3 17.Ne4+/-) 16.Ne4+/- Qd5 17.Bd5 Nb4 18.Bc4 Bf5 19.Nc3 Bd6 20.e4 Re8 21.f3 Bc5 (better 21...Bd7+/-) 22.a3?? (better 22.Rc1+-) 22...Nc2= 23.Ra2 Nd4 (better 23...Na3!? 24.d4 Nc4 25.dc5 Re5=+) 24.Kd3+/- Bg6 (24...Bd7+/-) 25.Nd5 (25.Nge2 Ne2 26.Ne2 Ke7+/-) 25...c6 (25...f5 26.Nc3=) 26.bc6 bc6 27.Nf4 Rb8 28.Nge2 Ne2 29.Ke2 Kc7 (29...Bf5 30.Rc1 Bd6 31.g3+/-) 30.Rd1 (better 30.Ne6 Kd6 31.Nc5 (31.Ng7?! Re7 32.Ne6 Bf7+=) 31...Kc5 32.Rc2+-) 30...Red8?? (30...Be4 31.Ne6 Re6 32.Be6 Bb1=) 31.d3 (better 31.Ne6!? Kd6 32.Nd8 Rd8+-) 31...Rd4 (31...Re8 32.Ne6 Kd6 33.Rc1+- (33.Ng7?! Re7+/-)) 32.Ng6 (better 32.Ne6!? Kd6 33.Rc1+-) 32...hg6+/- 33.Rdd2 (33.Rc1 g5+/-) 33...f5 (33...Rb1 34.Rdc2+=) 34.Rdb2 (34.Rdc2!?+/-) 34...fe4 (34...Rb2 35.Rb2 Ba3 36.Ra2+=) 35.fe4 Rb2 36.Rb2 Rc4? (better 36...Ba3 37.Ra2 Bb4+=) 37.dc4+- Ba3 38.Rc2 1-0. ClayPigeons (2185) - matador1104 (2175), Rated Bullet game, lichess.org, 2019.

5.e3 Bb4 6.a3+= Be7 7.Nc3 (7.d4 ed4 8.Bd4 Nf5 9.Bc3 d6+=) 7...0-0 (7...Nf7 8.Nf3 0-0 9.Bd3 c6+=) 8.Nf3 d6 9.d4 Be6 (9...Nd7+=) 10.Bd3 Nd7 11.Nd5 c6 12.Ne7 Qe7 13.bc6 bc6 14.Qc2 g6 15.0-0 c5 16.de5 de5 17.Rfd1 Nb6 18.Rab1 Rfb8 19.Nd2 Nf7 20.f4 Nd7 (20...Ra7!?+=) 21.Bg6!+/– hg6 22.Qg6 Kh8 (22...Kf8 23.f5+/–) 23.Qh5 Kg7 24.f5 Nf8 (24...Kf8!?+/–) 25.Qg4+– Kh7 26.fe6 Nh6 27.Qe4 Kg7?? (27...Kg8+–) 28.Be5! Rb1 (28...fe5 29.Qe5) 29.Rb1 (29.Nb1?! Re8 30.Bc3 Qe6 31.Qe6 Ne6 32.Ba5 Ng4+–; 29.Qb1?! fe5 30.Qe4 Rd8 31.Qe5 Kh7+=) 29...Ra7 (29...Qe6 30.Bf6! Kf6 31.Qa8 Qe3 32.Kh1 Kg7 33.Qa5 Ng4 34.Qc7 Kh8+–) 30.Bb8 1–0. Jacobi,Karl Heinz – Brkic,Bahrija, Lueneburg distr–ch, 1996.

5.e3 Bc5 A) 6.Qh5 Nf7 7.d4 Bb4 8.Nc3 ed4 9.ed4 Qe7=; B) 6.Nf3 d6 7.d4 Bb4 8.Nbd2 Bg4 9.Bd3 f5=; C) 6.Qf3 d6 7.d4 Bb4 8.Nc3 Nf5 9.0-0-0 c6=; D) 6.d4 Bb4 7.Nd2 ed4 8.Bd4 (8.Qh5 Nf7 9.Bd4+= d6+=) 8...Nf5 9.a3 Bd2+=.

5.e3 Be7 A) 6.Nf3 b6 (6...d6 7.d4 Bf5 8.Be2 0-0 9.Nc3 Be6+=; 6...e4 7.Nd4 0-0 8.Nc3 f5 9.d3 Bb4+=) 7.Qc2 Bb7 8.d4 Bb4 9.Nc3 Bf3=; B) 6.Qh5 Nf7 7.d4 ed4 8.Bd4 d6 9.Nc3 Nd7=; C) 6.d4 Bb4 (6...ed4 7.Qh5 Nf7 8.Bd4 Bb4 9.Nd2 d6+=) 7.Nd2 ed4 8.Qh5 Nf7 9.Bd4 Bd2+=; D) 6.Qf3 0-0 7.d4 Bb4 8.Nd2 Nf7 9.Rd1 ed4=; E) 6.Qc2 d6 7.d4 ed4 8.Bd4 Bf5 9.Bd3 Bd3+=.

5.e3 Nf7 A) 6.Qc2 b6 (6...Bb4 7.a3 Bf8 8.Nf3 d6 9.d4 ed4+=; 6...Bc5 7.Nf3 d6 8.Bd3 g6 9.0-0 a4+=; 6...Ng5 7.Be2 d5 8.cd5 Qd5 9.Qc7 Bd7+=; 6...d6 7.Bd3 d5 8.cd5 Qd5 9.Nf3 Nd6+=) 7.Nf3 Bb7 8.Bd3 g6 9.Be4 c6=; B) 6.Nc3 Bb4 7.a3 Bc3 8.Bc3 d6 9.d4 0-0=; C) 6.d4 Bb4 (6...ed4 7.Bd4 Bb4 8.Nd2 Qe7 9.Ngf3 0-0=; 6...Be7 7.Nd2 0-0 8.Bd3 a4 9.Qc2 g6+=) 7.Nd2 d6 8.a3 Bd2 9.Qd2 0-0=.

5.e4 A) 5...Bb4 A1) 6.a3 Bc5 A11) 7.Nf3 d6 8.d4 ed4 9.Bd4 Bd4 10.Qd4=; A12) 7.d4 Bd4 8.Bd4 ed4 9.Qd4 d6 10.Nf3=; A13) 7.Qh5 Nf7 8.Nf3 d6 9.d4 (9.Be2 g6 10.Qh4=) 9...ed4= 10.Bd4=; A14) 7.Nc3 0-0 8.Nf3 d6 9.d4 ed4 10.Nd4=; A15) 7.Be2 d6 8.Nf3 f5 9.Nc3 0-0 10.0-0=; A2) 6.Nf3 d6 (6...0-0) 7.a3 (7.Be2 f5 8.a3 Bc5 9.Nc3 0-0 10.0-0=) 7...Bc5 8.d4 ed4 9.Nd4 0-0= 10.Nc3=; A3) 6.Ne2 d6 (6...0-0) 7.a3 (7.Nbc3 Nd7 8.a3 Nc5 9.Ng3 Bc3 10.Bc3=; 7.Bc1 f5 8.a3 Bc5 9.d4 ed4 10.Bh6+=) 7...Bc5 8.d4 ed4 9.Nd4 0-0= 10.Nc3=; A4) 6.Qh5 Nf7 A41) 7.Nf3 d6 8.Nc3 0-0 9.Nd5 Bc5 10.Be2=; A42) 7.Be2 d6 8.Nc3 g6 9.Qh4 Nd7 10.Nd5=; A43) 7.a3 Bc5 8.Nf3 d6 9.d4 (9.Be2 g6 10.Qh4=) 9...ed4= 10.Bd4=; A44) 7.Nh3 0-0 8.Be2 d6 9.a3 Bc5 10.Nc3=; A45) 7.Nc3 g6 8.Qh4 f5 9.Qd8 Kd8 10.ef5+=; B) 5...Nf7 6.Nf3 Bc5 7.Be2 Nd6 8.Nc3 0-0 9.0-0 b6 10.d3+=; C) 5...a4 6.a3 C1) 6...d6 7.Nf3 (7.Nc3 f5 8.ef5 Nf5 9.Be2 Be7 10.Bh5+=) 7...Nd7 8.d4 ed4 9.Bd4 f5 10.Bd3+=; C2) 6...Be7 7.Nf3 (7.Nc3 d6 8.Na4 f5 9.d4 0-0 10.Bd3=) 7...0-0 8.d4 d6 9.Be2 c5 10.de5+=; D) 5...b6 D1) 6.Nc3 D11) 6...Bc5 7.Qh5 (7.Nf3 Bb7 8.Be2 0-0 9.0-0 f5 10.ef5=; 7.Be2 Bb7 8.Nf3 0-0 9.0-0 f5 10.ef5=) 7...Nf7 8.Nf3 Bb7 9.Be2 a4 10.0-0=; D12) 6...Bb4 7.a3 Bc5 8.Qh5 Nf7 9.Be2 g6 10.Qh4+=; D13) 6...Bb7 7.Nf3 (7.Be2 Bb4 8.Nd5 0-0 9.Nf3 f5 10.Qc2=; 7.Qh5 Nf7 8.Nf3 Bb4 9.Bd3 0-0 10.0-0=) 7...Bb4 8.Nd5 0-0 9.a3 Bd6 10.d4=; D2) 6.d4 ed4 (6...Bb4) 7.Qh5 (7.Bd4 Bb4 8.Nd2 Bb7 9.Qh5 Nf7 10.0-0-0=) 7...Nf7 8.Bd4 Bb4 9.Nd2 Qe7 10.Bd3=; D3) 6.Be2 D31) 6...Bc5 7.Nc3 (7.Nf3 Bb7 8.Nc3 0-0 9.0-0 f5 10.ef5=) 7...d6 8.Nf3 f5 9.0-0 Bb4 10.d4+=; D32) 6...Bb7 7.Nc3 Bb4 8.Bh5 Nf7 9.Bf7 Kf7 10.Qh5=; D4) 6.Qh5 Nf7 7.Nf3 (7.d4 ed4 8.Bd4 Bb4 9.Nd2 Bb7 10.0-0-0=; 7.Be2 Bb7 8.Nc3 Bb4 9.Nd5 c6 10.Nb4=) 7...Bb7 8.Nc3 Bc5 9.Be2 0-0 10.0-0=; E) 5...Bc5 E1) 6.Qh5 Nf7 7.Nf3 (7.Be2 d6 8.Nc3 0-0 9.Nf3 a4 10.a3=) 7...d6 8.Be2 0-0 (8...g6) 9.0-0 (9.Nc3 a4 10.a3=) 9...Nh6= 10.Nc3=; E2) 6.Nf3 d6 (6...0-0) 7.d4 ed4 8.Bd4 Bd4 9.Qd4 Be6 (9...Nd7= 10.Be2=) 10.Bd3=; E3) 6.Be2 d6 E31) 7.d4 ed4 8.Bd4 Bb4 9.Nc3 Qe7= 10.Nf3=; E32) 7.Nf3 f5 8.Nc3 0-0 9.0-0 Qe8 10.Nd5=; E4) 6.d4 Bd4 7.Bd4 ed4 8.Qd4 d6 9.Nf3 Be6= 10.Be2=.

5.Qh5 g6 6.Qh4 Be6 7.Nf3 Nd7 8.Be2 Nh6 9.0-0 Nf5 10.Qa4 Nc5 11.Qa3=+ Ne4 12.Qd3 Bc5 13.Nc3 Nc3 14.Qc3 Bb4 15.Qb3 Qd6 16.c4 0-0 17.cd5 Bd5 18.Bc4 c6? 19.a4?? Kh8 20.Bd5 cd5 21.Rac1 Rac8 22.Rfd1 g5 23.d4 e4 24.Nd2 Nh4 25.Rc8 Rc8 26.Nf1 Kg7 27.Rc1 Rd8 28.Bc3 Ba3 29.Rc2 f5? 30.Ba5+– Rd7 31.Ra2 Bc1 32.Rc2 Ba3 33.Ra2 Bc1 34.Rc2 Be3?? 35.Ne3+– f4 36.Ng4 f3 37.g3 Nf5 38.Ne5 Nd4 39.Qc3?? Nc2?? 40.Nc4?? d4?? 41.Nd6?? dc3–+ 42.Ne4 Rd1 0–1. elsh1403 – belaba65 (2015), internet, 2011.

5.Qh5 g6 6.Qh4 Bg7 7.c4 Be6 8.cd5 Bd5 9.Nc3 Be6 10.f4 ef4 11.Qf4 Ne7 12.Nf3 0-0 13.Bc4 Bc4 14.Qc4 Kh8 15.0-0 Nd7 16.Rad1 Nb6 17.Qb3 Qd3 18.Ne1 Qc4 19.Qc2 Rad8 20.d3 Qe6 21.Qe2 Ned5 22.Ne4 f5 23.Bg7 Kg7 24.Ng5 Qe3 25.Qe3 Ne3 26.Ne6 Kf6 27.Nf8 Rf8 28.Nf3 Nd1 29.Rd1 Rd8 30.Kf2 Nd5 31.a3? b6 32.Re1? Nf4 33.d4 Nd3 34.Ke2 Ne1 35.Ke1 g5 36.Ke2 g4 37.Nh4 Rd4 38.Ke3 Ra4 0–1. elsh1403 – fshutslonca (1645), internet, 2011.

5.Nc3 a4 6.Nf3 (6.Bc4 d6 7.Nf3 Nd7 8.d4 a3 9.Bc1+=) 6...Ne7 7.d4 ed4 8.Nd4 g6 9.Bc4+/–.

5.Nc3 d6 6.Na4 Ba7 7.Bc4 Ne7 8.Qh5 g6 9.Qh4=.

5.Nc3 d6 6.Bc4 a4 7.Nf3 Nd7 8.d4 a3 9.Bc1+=.

5.Nc3 d6 6.Bc4 Nd7+= 7.a4 Nb6 8.Bb3 Qe7 9.Nf3 Be6 10.0-0 (10.Nd5!? Bd5 11.ed5+=) 10...Bb3= 11.cb3 Nh6 12.Rc1 0-0 13.Re1 Qf7 (13...Rae8 14.h3=) 14.h3 Rac8 15.d3 Nd7 16.Qc2 Rfe8 (16...c6 17.Rb1=) 17.Rcd1 Qg6 18.Kh1 (18.Nd5 c6 19.bc6 bc6= (worse is 19...Rc6 20.Qd2+/–)) 18...c6 (18...Nf7 19.Bc1=) 19.d4 ed4 20.Nd4 Bd4 21.Rd4 Nf5 22.Rdd1 Nh4 23.f4 (23.g3 Nf3 24.Re3 Ng5 25.Rd6 Nc5 26.bc6 Nce4 27.Ne4 Ne4 28.Qc4 Kh8+=) 23...cb5= 24.ab5 (worse is 24.Rd6 Qg3 25.Qd2 Nc5–/+) 24...Nc5 25.Re3 (worse is 25.Rd6 Qg3 26.Red1 Qf4–/+) 25...Qf7 Exerts pressure on the isolated pawn 26.Qe2 (26.Rd6 Nf5 27.ef5 Re3+=) 26...f5 (worse is 26...Nb3 27.f5+/–; 26...Qb3? 27.Nd5 Ne4 28.Rb3 Ng3 29.Rg3 Re2 30.Bf6+–) 27.g3 (27.Rd6 fe4 28.Nd5 Rcd8 29.Nf6 gf6 30.Rf6 Qg7+=) 27...Ng6 28.Rd6 Qb3 29.Rd2 Qe6 30.e5 Red8 31.Rd8 Rd8 32.Ba3 Rc8 33.Kg1 h6 34.Qd2 (34.Bc5 Rc5 35.Qc2 Kh7=) 34...Qc4 Black prepares the advance a4 35.Qd6 (35.h4 Ne6=) 35...Kh7 36.Qd5 (36.h4 Ne6 37.h5 Ngf4 38.gf4 Qf4+=) 36...Ne6= 37.b6 (37.Qb7 Qd4 38.Qc8 Qe3 39.Kf1 Qd3 40.Kf2 Nd4–+) 37...h5 38.h4 (38.Qb7 Qd4 39.Qc8 Qe3 40.Kf1 h4–+) 38...a4 39.Qd1 (39.Qb7 Qd4 40.Qc8 Qe3 41.Kf1 Qf3 42.Ke1 Qg3 43.Kd1 Qd3 44.Kc1 Nd4 45.Na4 Nf4–+) 39...Qd4 40.Qd4 Nd4 41.Nd5 Nc2 (41...Rd8 42.Nc7 Nc2 43.Rc3 Na3 44.Ra3+=) 42.Rd3 Ra8 (42...Rc6 43.Kf2+/–) 43.Kf1 Kg8 44.Nc7 Ra5 45.Ke2 Na3 46.Ra3 Ne7 47.Kd3 Nc8 48.Kc4 Nb6 49.Kb4 Ra7 50.Kb5 Na8 (50...Nc8 51.Ra4 Ra4 52.Ka4+=) 51.Na8+/– Ra8 52.Ra4 Rd8 53.Ra7 Kf8 (53...Rd5 54.Kb6+/–) 54.Kc5 (54.Rb7 Rc8 55.Kb4+/–) 54...Rb8? (better is 54...Rd7+=) 55.Kd6+– b5 56.Kc7 Re8 57.Ra5 b4 58.Rb5 Re7 (58...Ke7 59.Rb4 Ra8 60.Rb7+–) 59.Kd6 Kf7 60.Rb4 Re6 61.Kc5 Re7 62.Rb6 Rc7 63.Kd6 (63.Kd6 Re7 64.Rb8 Re6 65.Kd5+–) 1–0. calabuig (1975) – marekt (2135), gameknot.com, 2015.

5.Nc3 d6 6.Nf3 a4 7.a3 Bg4 8.Bc4 Ne7 9.h3+=.

5.Nc3 d6 6.Nf3 Nd7+/–.

5.Nc3 Ne7 6.Qh5 g6 7.Qh4 0-0 8.Bc4 Kg7 9.Nf3+=.

5.Bc4 b6? 6.Qh5 g6 7.Qh4 Qe7 8.Ne2 d6 9.Nbc3 Be6 10.Nd5 Bd5 11.Bd5 Ra7 12.0-0 h5 13.Kh1 g5 14.Qg3 h4 15.Qb3 Nh6 16.d4 ed4 17.Nd4 Ng4 18.Nf5 Qd7 19.h3 Nf2? 20.Rf2! Bf2 21.Bf6 c5 22.Bh8 g4 23.hg4 h3 24.Qh3 Qh7 25.Rf1 Qh3 26.gh3 Bd4 27.Nd6 Ke7 28.Nf5 Ke8 29.Bd4 cd4 30.Nd4 Rh7 31.Kg2 Nd7 32.Bc6 Kd8 33.Bd7 Kd7 34.Nf5 Ke6 35.h4 Ke5 36.Re1 Kf4 37.e5 Kg4 38.Nd6 Re7 39.Nc4 Kh4 40.Nb6 Kg4 41.Nd5 Re6 42.b6 Kf5 43.b7 Re8 44.c4 Rb8 45.Rb1 Ke5 46.Rb5 Kd6 47.Ra5 Rb7 48.Kf3 Rf7 (48...Rf7 49.Ke4 Kc6+–). bratek55 – dtpwaldi (1655), internet, 2011.

5.Bc4 d6 6.Nc3 (6.Nf3 Bg4 7.Nc3 Ne7 8.h3 Bh5 9.0-0=) 6...a4 7.Nf3 Nd7 8.d4 a3 9.Bc1+=.

5.Bc4 Ne7 6.Qh5 (6.Nc3 a4 7.Qh5 g6 8.Qf3 d6 9.Nh3=; 6.Qf3 d6 7.Nc3 a4 8.Qh5 g6 9.Qh6=) 6...g6 7.Qf3 Rf8 8.Nh3 d6 9.c3=.

5.Nf3 d6 6.d4 (6.Bc4 Bg4 7.0-0 Nd7 8.h3 Bh5 9.c3+=; 6.Be2 d5 7.Nc3 d4 8.Na4 Be7 9.Bc4+=; 6.Nc3 a4 7.Bc4 Nd7 8.d4 a3 9.Bc1+=) 6...ed4 7.Bd4 Nd7 8.Bd3 Ne7 9.0-0+=.

5.Nf3 Ne7 6.Nc3 A) 6...a4 7.d4 (7.Bc4 c6 8.d4 ed4 9.Nd4 Qb6 10.Nce2 d5 11.ed5 cd5 12.Bd3=; 7.a3 d5 8.ed5 Nd5 9.Ne5 0-0 10.d4 Nc3 11.Bc3 Bd6 12.Nc4+=) 7...ed4 8.Nd4 a3 9.Bc1 d5 10.Rb1 f5 11.ed5 Nd5 12.Nf5+/–; B) 6...d6 7.d4 (7.Na4 Ba7 8.Bc4 d5 9.ed5 Nd5 10.Ne5 0-0 11.Ng4 Re8 12.Ne3+/–; 7.Bc4 a4 8.0-0 Nd7 9.Be6 Nb6 10.Bc8 Qc8 11.Re1 Nc4 12.Rb1=; 7.Be2 a4 8.a3 Bg4 9.0-0 Nd7 10.h3 Bh5 11.Bc4 Nb6 12.Be6=) 7...ed4 8.Nd4 Bd4 9.Qd4 Be6 10.Bc4 c5 11.Qd3 Bc4 12.Qc4+/–; C) 6...c6 7.Na4 (7.d4 ed4 8.Nd4 d5 9.ed5 Nd5 10.Qe2 Kf7 11.0-0-0 Nc3 12.Bc3+=; 7.Be2 d5 8.0-0 a4 9.ed5 a3 10.Bc1 Nd5 11.Ne4 Bb4 12.c4=) 7...Ba7 8.Rb1 cb5 9.Bb5 0-0 10.d4 ed4 11.Bd4 Bd4 12.Qd4+/–; D) 6...d5 7.ed5 Nd5 8.Ne5 0-0 9.Nd3 Bb6 10.Be2 Nc3 11.Bc3 Qd5 12.0-0+=.

5.Nf3 Ne7 6.Bc4 d5 7.ed5 Nd5 8.Ne5 0-0 9.Qf3+=.

5.Nf3 Ne7 6.Bc4 d5!? 7.ed5 Nd7+= 8.d4 Nb6 9.Be2 ed4 10.Bd4 Bd4 11.Nd4 Nbd5 12.Bh5=.

5.Nf3 Ne7 6.Bc4 d6 7.d4+– Bb6 8.0-0 Bg4 9.c3 (9.de5 fe5 10.h3 Bh5+– 11.Nc3 Rf8 12.Be2+=) 9...Nd7 (9...c6 10.h3 (10.Nbd2 d5 11.Bd3+/– f5 12.ed5=) 10...Bf3 11.Qf3 d5 12.Bd3+=) 10.a4 (10.Nbd2 a4 (10...f5 11.Be6 ed4 12.cd4+=) A) 11.a3 f5 (11...Bh5+/– 12.Be6+/–) 12.h3+=; B) 11.h3 Bh5 12.Qc2+=; 10.h3 Bh5 11.Be6 f5 12.ef5+/–) 10...g5 (10...c5!? 11.h3 (11.Nbd2 cd4 12.cd4 Bd4 13.Bd4 ed4+/–) 11...Bh5 12.Nbd2+=; 10...f5 11.h3 Bh5 12.g4=) 11.Nbd2+– (11.h3 Bh5 12.Nbd2+/–) 11...Bh5 (11...f5 12.Be6+/–) 12.h3 (12.Be6+/–) 12...Bf7 13.Bf7 (13.Qb3 0-0+–) 13...Kf7+/– 14.Nc4 h5 15.Qb3 Kg7 16.Nb6 Nb6 17.g3 (better is 17.c4!? Qg8 18.de5 de5 19.Ne5 fe5 20.Be5 Kh7 21.Bh8 Kh8 22.Qg3+–) 17...Qd7 (17...Qg8 18.Qg8 Rhg8 19.Nd2=) 18.Kh2 (18.h4!? Qg4 19.c4 gh4 20.Nh4+/–) 18...Ng6+= 19.de5 de5 (19...Ne5 20.c4 Nec4 21.Bc3+=) 20.Rfd1 Qf7 (20...Qc8 21.Bc1=) 21.Qf7 (21.Nd2 Qd7=) 21...Kf7 22.Nd2 Rhd8 23.c4 Rd3 24.c5 Nd7 25.Ba3 (25.Rac1!?+=) 25...Rd8–/+ 26.Nc4 Nc5 27.Rd3 Rd3?? (better is 27...Nd3 28.Na5 Nf2–/+) 28.Bc5+– Rc3 29.Na5 Rc5 30.Nb7 Rc2 31.a5 Ne7 (31...h4 32.Kg1 hg3 33.fg3+–) 32.a6 Nc8 (32...Rf2 33.Kg1 Rf3 34.a7 Rg3 35.Kf2 Rh3 36.a8Q Rh2 37.Kg1+–) 33.a7 Nb6 (33...Na7 34.Ra7 Rf2 35.Kg1+–) 34.a8Q (better is 34.Kg2!? Rb2+–) 34...Na8 35.Ra8 Rf2 36.Kg1 Rb2 37.Rc8 Rb5 38.Rc7 Kg6 (38...Ke6 39.Rh7+–) 39.Nc5 Rb1 (39...Rb4 40.Nd7 Re4 41.Rc6+–) 40.Kf2 Rb2 41.Kf3 Rh2? (41...Rb8+–) 42.Nd7 (better is 42.Ne6 f5 43.Nf8 Kf6 44.ef5 e4 45.Ke4 Re2 46.Kf3+–) 42...f5 (42...Kf7 43.Ne5 Ke8+–) 43.Rc6 Kf7 (43...Kg7 44.ef5 Ra2+–) 44.Ne5 (44.Ne5 Kg8 45.ef5 g4 46.hg4+–) 1–0. Etmans,Maarten (2210) – Mostertman,Loek (2100), Open Dutch Champ, Dieren NED (6), 2004.

5.Nf3 Ne7 6.d4 ed4 A) 7.Bd4 Bd4 8.Qd4 (8.Nd4 d5 9.Qh5 g6 10.Qf3 Qd6 11.Nc3 Qe5 12.0-0-0+=) 8...0-0+/– (8...d6 9.Be2 Be6 10.0-0 0-0 11.Bc4 Qc8 12.Nc3+=) 9.Bc4 Kh8 10.0-0 d6 11.Nbd2 Nd7 12.Rad1+=; B) 7.Bd3 Bb4 8.Nbd2 Bc3 9.Bc3 dc3 10.Nb1 d6 11.0-0 Be6 12.Nd4+=; C) 7.Nd4 d5 8.Bd3 0-0 9.0-0 c6 10.ed5 Qd5 11.Nb3 Bb4 12.a3+=.

6.d3 a4 7.Nc3 d6 8.Nge2 f5 9.Nd5+=.

6.Nf3 Bf2!? 7.Kf2 Qc5 8.d4 Qc4+= 9.Na3 Qb4 10.Rb1 ed4 11.Qd3 (11.Re1 d6+=) 11...Qe7+=.

6.Nf3 Bf2!? 7.Kf2 Qc5 8.d4 Qc4+= 9.Qd3 Qd3 10.cd3 d6 11.Rc1 Kd8=.

6.Nh3 a4+= 7.Nc3 d6 8.Nd5 Qd8 9.0-0+=.

6.Qh5 Kd8 7.Nh3 d6 8.Nc3 Be6 9.Bd5+=.

7.Nc3+= a4 8.Nd5 Qd7 (8...Qd8 9.d4 ed4 10.Bd4 Bd4 11.Nd4 c6 12.bc6+/–) 9.d4 a3 10.Bc3 ed4 11.Nd4 c6 12.Nf4+/–.

7.Nc3+= Ra7 8.Nd5 Qd8 (8...Qd7 9.d4 ed4 10.Nd4 b6 11.Nb3 Qg4 12.Qg4+/–) 9.d4 ed4 10.Bd4 Nd7 11.0-0 Nh6 12.Rb1+/–.

7.Nc3+= c6 8.0-0 Be6 (8...Nd7 9.d4 (9.Na4 Nb6 10.Nb6 Bb6 11.d4 Bg4 12.c3+=; 9.Be2 Nh6 10.d4 ed4 11.Nd4 Ne5 12.Nb3+=; 9.Rb1 Nb6 10.Be2 Bg4 11.Bc1 Rd8 12.bc6+=; 9.Bb3 Bb4 10.bc6 bc6 11.d4 Bc3 12.Bc3+=) 9...ed4 10.Nd4 Ne5 11.Be2 Nh6 12.Nb3+=; 8...Bg4 9.h3 Be6 10.Be6 Qe6 11.d4 ed4 12.Nd4+/–; 8...Bb4 9.Na4 cb5 10.Bb5 Bd7 11.c4 Bb5 12.cb5+/–) 9.Qe2 (9.Be6 Qe6 10.d4 ed4 11.Nd4 Bd4 12.Qd4+/–) 9...a4 (9...Nh6 10.Rad1 Bc4 11.Qc4 Qf7 12.Qa4+=) 10.a3 (10.Rad1 Bc4 11.Qc4 Qf7 12.Qf7+=) 10...Qf7 (10...Bc4 11.Qc4 Qf7 12.Qd3+=) 11.Be6 Qe6 12.Nd1 (12.Rad1!?+/–; 12.Rfd1+/–) 12...Ne7+= 13.c3 0-0 14.d4 Bb6 15.Rb1 Nd7 16.c4 cb5 17.cb5 Ng6 18.d5 Qg4 (18...Nf4 19.de6 Ne2 20.Kh1 Nc5+=) 19.Re1 (better is 19.Nd4! Qe2 20.Ne2=) 19...Nf4–/+ 20.Qf1 f5 21.Ne3? (better is 21.Nd2!?–/+) 21...Be3–+ 22.Re3 fe4 23.Nd2 Nc5 24.h3 (24.Rbe1 Nd5 25.Qc4 Qe6–+) 24...Qf5 25.g4 Qg6 26.Qc4 Rac8 27.Bc3 (27.Ba1–+) 27...Ncd3 28.Qa4 (28.Qe4 Rc3 29.Qg6 hg6 30.Ne4 Ra3 31.Rd1–+) 28...Rc3 29.Ne4 (29.Qe4 Nh3! 30.Rh3 Nf2 31.Qg6 Nh3 (31...hg6?? 32.Rc3 Ng4 33.Rc7+–) 32.Kh2 hg6–+) 29...Nc5 (29...Nc5 30.Nc3 Na4–+) 0–1. Agrest,Roman (2050) – Akvist,Hakan (2045), Goeteborg sen. SWE–ch Senioren, 2005.

7.Nc3+= c6 8.Rb1 A) 8...f5 9.bc6 (9.0-0 Nf6 10.Re1 fe4 11.Ne4 Ne4 12.Re4+/–; 9.d3 fe4 10.de4 Nf6 11.0-0 Be6 12.Qd3=) 9...bc6 10.0-0 Ba6 11.Ba6 Na6 12.d4+/–; B) 8...a4 9.bc6 (9.0-0 Nd7 10.d4 ed4 11.bc6 bc6 12.Nd4+/–) 9...bc6 10.0-0 Nd7 11.d4 ed4 12.Nd4+/–; C) 8...Nh6 9.bc6 (9.0-0 Bg4 10.h3 Be6 11.Be6 Qe6 12.d4+=) 9...bc6 10.0-0 Ba6 11.Ba6 Ra6 12.Ba3+/–; D) 8...Bg4 9.h3 (9.0-0 Nd7 10.Na4 Be6 11.Qe2 Qf7 12.Be6+=; 9.bc6 bc6 10.h3 Be6 11.Be6 Qe6 12.d4+=; 9.d3 Nd7 10.h3 Be6 11.Be6 Qe6 12.d4+=; 9.Qe2 a4 10.h3 Bh5 11.bc6 bc6 12.Bc1+=) 9...Be6 10.Be6 Qe6 11.d4 Bb4 12.bc6+=.

7.Nc3+= Bd7 8.Nd5 Qd8 9.d4 ed4 10.Bd4 Bg4 11.Bc5 dc5 12.h3+/–.

7.Nc3+= Nd7 8.Nd5 Qd8 9.d4 ed4 10.Bd4 Ne7 11.0-0 Nd5 12.Bd5+/–.

7.Nc3+= Qd8 8.d4 Bb4 (8...Bd4 9.Nd4 ed4 10.Qh5 g6 11.Qd5 Nh6 12.Qd4+/–; 8...ed4 9.Nd4 Bd4 10.Qd4 Nd7 11.Qd1 Ne7 12.Qg4+/–) 9.a3 Bc3 10.Bc3 Nd7 11.Nh4 Ne7 12.Qg4+/–.

7.Nc3+= Be6 A) 8.Nd5 Bd5 9.Bd5 (9.ed5 Nd7 10.0-0 Nb6 11.Qe2 Nh6 12.d4+=) 9...c6 10.Bc4 Nd7 11.0-0 Nb6 12.Bg8+=; B) 8.Be6 Qe6 9.Nd5 (9.d4) 9...Kd8 10.0-0 c6 11.Nc3 Ne7 12.a4+/–.

7.Nc3+= f5 8.Nd5 A) 8...Qd8 9.ef5 c6 10.Ne3 Nf6 11.d4 ed4 12.Bd4+/–; B) 8...Qd7 9.ef5 c6 10.bc6 bc6 11.Ne3 Nf6 12.Be6+/–.

7.Nc3+= Bg4 A) 8.h3 A1) 8...Be6 9.Nd5 Bd5 10.Bd5 c6 11.Bc4 d5 12.ed5+=; A2) 8...Bd7 9.Nd5 Qd8 10.d4 ed4 11.Bd4 c6 12.bc6+/–; A3) 8...Bh5 9.0-0 (9.Na4 Nd7 10.0-0 Bf7 11.Bf7 Qf7 12.Qe2+=) 9...c6 10.Na4 Nd7 11.Re1 Nb6 12.Nb6+=; B) 8.a3 c6 9.0-0 (9.h3 Bh5 10.0-0 Nd7 11.Na4 Nh6 12.Qe2+=; 9.Qe2 Nd7 10.h3 Be6 11.0-0 Nb6 12.Be6=; 9.bc6 bc6 10.Rb1 Nd7 11.h3 Bh5 12.g4=) 9...Nd7 10.h3 Bh5 11.Na4 Nh6 12.Qe2+=; C) 8.Rb1 C1) 8...c6 9.h3 (9.bc6 bc6 10.h3 Be6 11.Be6 Qe6 12.d4+=; 9.0-0 Nd7 10.h3 Nb6 11.Be2 Bf3 12.Bf3+=; 9.d3 Nd7 10.h3 Bh5 11.Na4 Bf7 12.bc6+=; 9.Qe2 a4 10.h3 Bh5 11.Ba1 Qc7 12.0-0+=) 9...Be6 10.Be6 Qe6 11.d4 Bb4 12.bc6+=; C2) 8...Nd7 9.h3 (9.0-0 Nb6 10.Nd5 Qd7 11.Nb6 Bb6 12.a3+=; 9.Nd5 Qd8 10.0-0 Ne7 11.h3 Bh5 12.a3+=; 9.a3 Nb6 10.Nd5 Nd5 11.Bd5 Ra7 12.0-0+=; 9.Bd5 0-0-0 10.h3 Bh5 11.a3 Nb6 12.Qe2=) 9...Bh5 10.0-0 Nb6 11.Nd5 Qd8 12.Nb6+=; D) 8.0-0 D1) 8...Nd7 9.Na4 (9.Bd5 Rb8 10.h3 Bh5 11.Na4 Nb6 12.Nb6+=; 9.Nd5 Qd8 10.Qe2 c6 11.Ne3 Be3 12.Qe3+=; 9.h3 Bh5 10.Nd5 Qd8 11.Qe2 c6 12.Ne3+=) 9...f5 10.ef5 e4 11.Bd5 ef3 12.Re1+/–; D2) 8...Nh6 9.Nd5 (9.h3 Bh5 10.d3 Nf7 11.Bc1 Nd7 12.Nd5+=; 9.a3 Nd7 10.Nd5 Qd8 11.Qe2 c6 12.Ne3+=) 9...Qd8 10.c3 f5 11.ef5 c6 12.bc6+/–; D3) 8...c6 9.d3 (9.Na4 Nd7 10.Qe2 Ba7 11.bc6 bc6 12.Rab1+=; 9.Rb1 Nd7 10.Na4 f5 11.Re1 fe4 12.Re4+=; 9.a3 Nd7 10.h3 Nb6 11.Bg8 Bf3 12.Qf3+=; 9.h3 Bh5 10.Na4 Nd7 11.Re1 Nb6 12.Nb6+=) 9...Nd7 10.h3 Bh5 11.Na4 Bf7 12.Bf7+=; D4) 8...Qd8 9.Rb1 (9.h3 Bh5 10.Na4 Ba7 11.Qe2 Ne7 12.Qd3+=; 9.Na4 Ba7 10.Rb1 Nd7 11.Re1 Ne7 12.h3+=; 9.a3 Ne7 10.Na4 Nd7 11.h3 Bh5 12.Qe2+=) 9...Nd7 10.Na4 Nb6 11.Nb6 Bb6 12.h3+=; D5) 8...a4 9.Rb1 (9.h3 Bh5 10.a3 c6 11.Rb1 Nd7 12.Ba2+=; 9.a3 Nd7 10.Bd5 Ra7 11.h3 Bh5 12.Bc4+=; 9.Nd5 Qd8 10.Ne3 Be3 11.de3 Qd7 12.Bg8+=; 9.d3 Qd8 10.Rb1 Ne7 11.h3 Bh5 12.a3+=) 9...Nd7 10.a3 Nb6 11.Nd5 Qd7 12.Nb6+=.

7.Nc3+= Nh6 8.Nd5 Qd8 9.d4 ed4 10.Bd4 Nd7 11.0-0 Nf7 12.Bc5+/–.

7.d4 ed4= 8.0-0 Bg4 (8...Qe4?? 9.Re1 (9.Nd4?! Ne7=; 9.Bd4?! Qf5+=) 9...Qe1 10.Qe1 Ne7 11.Nd4+–) 9.Bd4 (9.c3=) 9...Nd7 (9...Bd4 10.Qd4 Bf3 11.gf3=) 10.Nc3 (10.Bc5 dc5 11.Bd5 0-0-0+=) 10...c6 (10...Bf3!? 11.gf3 0-0-0=) 11.Be2 Nh6 12.Bc5 Nc5 13.Nd4 Bd7 14.Bc4 Nf7 15.a4 0-0 (worse is 15...Ne4 16.Ne4 d5 17.bc6 bc6 18.Nc6 Bc6 19.Bd5 Bd5 20.Qd5+/–) 16.Re1 Rae8 17.Qd2 Qd8 18.Rad1 Bg4 19.f3 Be6 20.Ne6 Ne6 21.Bb3 Qb6 22.Qe3 Qe3 ½–½. Agrest,Roman (2050) – Malmdin,Nils Ake (2260), Goeteborg sen. SWE–ch Senioren, 2005.

6.Nc3 d4 7.Na4 Bd6 8.Bc4 Ne7 9.c3+=.

6.d4 Bb4 7.c3 de4 8.Ne5 fe5 9.cb4 ed4 10.Bd4 Nf6 11.ba5 Ra5 12.Bc4+=.

6.d4 de4 7.Ne5 Bb4 8.c3 fe5 9.cb4 ed4 10.Bd4 Nf6 11.ba5 Ra5 12.Bc4+=.

6.d4 ed4 7.Nd4 Ne7 8.Nb3 Bb4 9.c3 a4 10.cb4 ab3 11.Qb3 de4 12.Bc4+=.

6.d4 ed4 7.Nd4 Ne7 8.Bd3 f5 9.e5+=.

6.ed5 A) 6...Ne7 7.d4 (7.c4 Bg4 8.Be2 Nf5 9.h3 Bf3 10.Bf3 0-0 11.0-0 Nd4 12.Re1+=; 7.Bc4 Nd7 8.d4 Nb6 9.Be2 ed4 10.Bd4 Bd4 11.Nd4 Ned5 12.Bh5=) 7...ed4 8.Bc4 (8.Bd4 Bd4 9.Qd4 Nd5 10.Bc4 Nb6 11.Bd3 0-0 12.Qd8+=) 8...Bb4 (8...Nd5 9.0-0 Bg4 10.Qd3 Be7 11.Nd4 Nb6 12.Be6+/–) A1) 9.Nbd2 Nd5 10.Nd4+/– (10.Bd4 Qe7 11.Qe2 Be6 12.0-0=) 10...Nc3 11.Qh5 g6 12.Qh4+=; A2) 9.Nfd2 c5 10.dc6 bc6 11.0-0 Qd7 12.b6+/–; B) 6...Qd5 7.Nc3 (7.Bd3 Ne7 8.Nc3 Qf7 9.Qe2 0-0 10.0-0 Be6 11.Be4 c6 12.Rfd1=) 7...Qe6 8.Ne4 Bb6 9.Qe2 Ne7 10.d4 ed4 11.Nd4 Bd4 12.Bd4=.

5.d4 ed4!? 6.Qd4 Qe7+=.

5.d4 ed4 6.Bd4 d5 7.Bd3 c5 8.Bb2 Qe7 9.Nc3+=.

5.d4 Bd6 6.de5+/– Be5 7.Be5 fe5 8.Qh5 Kf8 9.Qe5 d5 10.Nc3 Nd7 11.Qf4 Qf6 12.Nge2 de4 13.Ne4 Qf4 14.Nf4 Ngf6 15.Nd6 Ke7 (15...Nc5 16.bc6 bc6 17.Bc4+/–) 16.Nf5+– Kf7 (better is 16...Kf8+–) 17.Bc4 Kf8 18.Ne6 Ke8 (18...Kf7 19.Nc7 Kg6 20.Ne7 Kh6 21.Na8 Re8+–) 19.Nc7 Kd8 20.Na8 1–0. market (2190) – apitka (2020), GameColony.com, 2002.

5.d4 Qe7 6.bc6 (6.Bd3 d5 7.Qe2 de4 8.Be4 ed4 9.Bd4=) 6...dc6 7.Ba3 Qd7 8.Bf8 Kf8 9.c3+=.

6.a3 cb5 A) 7.d4 b4 8.de5 ba3 9.Bc3 Nc6 10.ef6 Nf6=; B) 7.Nc3 bc4 8.Bc4 Ne7 9.Nf3 Nbc6 10.0-0 d6=; C) 7.cb5 d5 (7...Ne7 8.d4 ed4 9.Bd4 d5 10.Qh5 g6+=) 8.ed5 Qd5 9.Nc3 Qd8 10.Na4 Be6+=.

6.a3 Bc5 A) 7.Nf3 d6 (7...cb5 8.cb5 d5 9.d4 ed4 10.Nd4 Ne7+=; 7...d5 8.cd5 cd5 9.d4 ed4 10.Nd4 Ne7+=; 7...Ne7 8.d4 ed4 9.Bd4 Bd4 10.Qd4 d6+=; 7...Qa5 8.Be2 d6 9.0-0 Bg4 10.Nc3 Ne7+=) 8.Be2 Nh6 9.Nc3 Qb6 10.0-0 Qa7+=; B) 7.Ne2+= Ne7 (7...cb5 8.cb5 Qb6 9.d4 Qb5 10.dc5 Qb2+=; 7...d6 8.d4 ed4 9.Nd4 Ne7 10.Be2 0-0+=; 7...Qa5 8.Bc3 Qc7 9.d4 ed4 10.Nd4 d6+=; 7...Nh6 8.d4 ed4 9.Bd4 Bd4 10.Nd4 0-0+=) 8.d4 ed4 9.Bd4 Bd4 10.Nd4 d6+=; C) 7.Nc3 Qb6 8.Qh5 g6 9.Qh4 d6 10.Rb1 Be6+=; D) 7.d4 Bd4 8.Bd4 ed4 9.Qd4 b6 10.Bd3 Bb7+=.

6.a3 d5 7.ed5 (7.cd5 cd5 8.ed5 Qd5 9.Nc3 Qd8 10.Na4 Be6+=) 7...cd5 (7...cb5 8.d4 Qa5 9.Bc3 b4 10.ab4 Bb4+/–) 8.cd5 Qd5 9.Nc3 Qd8 10.Na4 Be6+=.

6.a3 g6 7.d4 (7.Nc3 Qb6 (7...d6 8.Nf3 Bg4 9.Be2 f5 10.ef5 gf5+/–; 7...Qa5 8.Nf3 Bc5 9.Be2 d6 10.0-0 Bg4+/–; 7...Bg7 8.Nf3 d6 9.Na4 Ne7 10.bc6 Nbc6+/–; 7...Ne7 8.d4 d6 9.Na4 Bg7 10.Nc3 0-0+/– 1.00) 8.Na4 Qa7 9.Nc3 Bc5 10.Qf3 d6+=) 7...ed4 (7...d6 8.Nf3 cb5 9.cb5 Bg4 10.h3 Bf3+/–) 8.Qd4 (8.Bd4 cb5 9.cb5 d5 10.Bd3 de4+=) 8...c5 (8...d6 9.Nf3+/– Nd7 10.Nbd2 Nc5+=; 8...b6 9.Nc3 Bc5 10.Qd1 Bb7+/–) 9.Qd5 (9.Qd1 d6 10.Nf3 Bg7+/–) 9...d6 10.Nf3 Ne7 (10...Bg7+/–) 11.Bf6 (better is 11.Qd2!? Bg7 12.Nc3+/–) 11...Nd5= 12.Bd8 Bg7 13.e5 (13.cd5 Ba1 14.Bc7 Kd7=) 13...0-0 (13...Kd8 14.cd5 Nd7+= (worse is 14...de5 15.Ng5+=; worse is 14...Be5 15.Ne5 Re8 16.Nc3=)) 14.cd5= Rd8 15.Nbd2 de5 16.Ne4 Re8 (16...Bf5 17.Nfd2 A) 17...Rd5?? 18.Bc4 Be6 19.Ng5+– (19.Bd5?! Bd5 20.Nc5 Ra5+/–); B) 17...Kf8+=) 17.Rd1 (17.Nc5 e4 18.0-0-0 ef3 19.gf3 Bf5 20.Nb7 Bf8–+) 17...Bf5 18.Nfd2 (18.Nd6 Rf8+/–) 18...Nd7 19.Nd6 Reb8 20.Bc4 Nb6 21.0-0 (21.h3!?+/–) 21...Bf8+= 22.Nf5 Nc4? (better is 22...gf5 23.Rfe1 Re8=) 23.Nc4 gf5 24.Ne5 (24.d6 Rd8+–) 24...Rd8 25.Nc4 1–0. Borrmann,Fritz – Schiffke, CiF, 1985.

6.Nc3 a3 7.Bc1 Bc5 8.Rb1 d6 9.Na4 Ne7 10.Nc5 dc5=.

6.d4 A) 6...Qa5 7.Qd2 (7.Bc3 Bb4 8.Qd2 Bc3 9.Nc3 ed4 10.Qd4 d6+=; 7.Nd2 a3 8.Bc1 ed4 9.Bd3 Bb4 10.Ngf3 c5=) 7...Bb4 (7...ed4 8.Qa5 Ra5 9.Bd4 d6 10.Nf3 Nd7+=) 8.Bc3 Bc3 9.Nc3 d6 10.Nf3 Bg4+=; B) 6...Bb4 7.Bc3 Bc3 (7...Qa5 8.Qd2 Bc3 9.Nc3 ed4 10.Qd4 c5+=) 8.Nc3 d6 9.de5 Qa5 10.Qd2 de5+=.

6.Ne2 cb5 A) 7.Nec3 a3 8.Bc1 b4 9.Nb5 Nc6 10.d4 Nd4=; B) 7.cb5 a3 (7...d5 8.ed5 Qd5 9.Nbc3 Qd3 10.Nf4 Qd4+=) 8.Bc1 d5 9.ed5 Qd5 10.Ba3 Qb5=.

6.Qf3 Bc5 A) 7.Qg3 Qe7 8.Be2 d6 9.Nf3 f5 10.ef5 Nh6=; B) 7.Be2 Ne7 8.Qh5 g6 9.Qh4 0-0 10.bc6 bc6+=; C) 7.Ba3 d6 8.Qg3 Qe7 9.Bc5 dc5 10.Nf3 Be6=; D) 7.Ne2 Qb6 8.Qg3 Kf7 9.Nbc3 Ne7 10.Rb1 d6=.

6.Nf3 cb5 A) 7.d4 Qa5 8.Nbd2 bc4 9.Bc4 a3 10.Bc1 ed4=; B) 7.cb5 d5 8.ed5 a3 9.Bc3 Qd5 10.d4 ed4+=.

6.h3 cb5 7.cb5 a3 8.Bc1 d5 9.ed5 Qd5 10.Ba3 Ba3=.

6.Qh5 g6 A) 7.Qe2 a3 8.Bc3 Bc5 9.Nf3 cb5 10.cb5 Qb6+=; B) 7.Qd1 d5 8.ed5 cd5 9.cd5 a3 10.Bc3 Ne7=; C) 7.Qh4 d5 8.ed5 cb5 9.d4 bc4 10.Bc4 Qa5=; D) 7.Qf3 Qb6 (7...Bb4 8.Ne2 d6 9.a3 Bc5 10.d4 ed4+=; 7...Bc5 8.Ne2 cb5 9.cb5 d5 10.ed5 Nh6+=) 8.Nc3 Bc5 9.Rb1 Qd8 10.a3 d6=.

5.ed5 Qd5 6.Nc3 Qe6 7.Qh5 Kd8 8.Bd3 Ne7 9.Qe2=.

5.ed5 Qd5 6.Qh5 g6 7.Qh4 Be7 8.Nf3 Bf5 9.Nc3 Qd8 10.Bc4 g5 11.Qg3 Bd6 12.Ng1 Bc2. Pathe – Kuhlmann, 1971.

4.a4 b6 5.e3 Bb7 6.Qh5 g6 7.Qh4 ab5 8.ab5 Ra1 9.Ba1 d5 10.f4 Bd6 11.Nf3 Nd7 12.Be2 Ne7 13.0-0 0-0 14.fe5 Be5 15.Ne5+/– Ne5? 16.Rf6+– Nf5 17.Rf8 Qf8 18.Qf4 Nf7 19.Qc7 Qe7 20.Qb6 d4 21.Bd4 Nd4 22.Qd4 Qg5 23.Qg4 Qe5 24.Bf3 Bf3 25.Qf3 Qb5 26.Nc3 Qb2 27.Qa8 Kg7 28.Qe4 Qc1 29.Kf2 Qd2 30.Ne2 Ng5? 31.Qd4 (31.Qd4 Qd4 32.ed4 (< 32.Nd4 Kf6+–) 32...Ne4 33.Ke3+–) 1–0. elsh1403 – april7, internet, 2011.

4.a4 Bc5 5.e3 Ne7 6.Qh5 (6.d4 Bb4 7.c3 Bd6=) 6...g6= 7.Qd1 c6 (7...d5 8.d4 Bb4 9.Nd2 ed4 10.Bd4+=) 8.Nf3 cb5 (8...d5 9.d4 Bb4 10.c3=) 9.ab5 0-0 10.d4 ed4 11.Nd4 Bb4 12.c3 Ba5 (12...Bc5 13.Be2+=) 13.Bc4 (13.Ba3!? Re8 14.ba6 Na6 15.Nb5+/–) 13...d5+= 14.Be2 ab5 15.Bb5 Qc7 16.0-0 Nbc6 17.Bd3 Nd4 18.ed4 (18.cd4 Bf5+=) 18...Qf4 (18...Bf5!?=) 19.Bc1 Qh4 20.Qf3 (better is 20.Re1!? Nc6 21.Qb3+/–) 20...Bc7= 21.g3 Qh3?? (better is 21...Qg4 22.Qg4 Bg4 23.Ra8 Ra8=) 22.Ra8+– Bg4 (22...Qg4 23.Be2 Qf3 24.Bf3 Be6+–) 23.Rf8 Kf8 24.Qf6 Ke8 25.Bb5 (25.Re1 Be6 26.Bb5 Nc6 27.Re6 Kd7 28.Bc6 bc6 29.Re7 Kc8 30.Qc6 Qg3 31.hg3 Kb8 32.Qc7 Ka8 33.Qc8) 25...Nc6 26.Re1 Kd7 27.Re7 Kc8 28.Rc7! Kc7 29.Bf4 Kb6 30.Bc6 bc6 31.Qd8 Kb5 (31...Ka6 32.Qa8 Kb6 33.Qb8 Ka6 34.Bc7 Qf1 35.Kf1 Bh3 36.Ke1 c5 37.Qb6) 32.Qb8 Kc4 33.Qb4 (33.Na3 Kc3 34.Bd2 Kd2 35.Qb2 Kd1 36.Qb3 Ke1 37.Qe3 Be2 38.Qc1 Bd1 39.Nc2 Ke2 40.Qe3) 33...Kd3+– 34.Na3 (34.c4 g5 35.Qa3 Ke4 36.Nd2 Kf5 37.Qf8 Kg6 38.Qg8 Kf6 39.Bg5 Kf5 40.Qf7 Kg5 41.f4 Kh6 42.Qf6 Kh5 43.Qg5) 34...Ke2 35.Qb2 (35.Qb1 Bd7 36.Qc1 Qg2 37.Kg2 Bh3 38.Kg1 Kf3 39.Qe3 Kg4 40.f3 Kh5 41.Bh6 c5 42.Qg5) 35...Kf3 36.Qc2 (36.Qe2 Ke2 37.c4 Qf1) 36...Qg2 0–1. GuestNZTQ – lazymannnnqattoee, freechess.org, 2017.

4.a4 Nh6 5.e4= d5 6.ed5 Qd5 7.Nc3 Qf7 8.Nf3 Bb4 (8...Bg4 9.Be2 Qg6 10.Nd5=) 9.Bd3 (9.Ba3 Ba3 10.Ra3 0-0=) 9...0-0 10.Qe2 c5 (10...ab5 11.Qe4 (11.ab5?! Ra1 12.Ba1 Bf5=; 11.Nb5?! Na6=; 11.Bb5?! Be6=) 11...Qg6 12.Qb4 Qg2 13.Ke2+–) 11.Ne4 ab5 12.Bb5 (12.Nd6 Qd7 13.Nc8 Rc8 14.Bb5 Qf5+=) 12...b6 (12...Bd7 13.Nd6 Qe7 14.Nb7 Bb5 15.Qb5+=) 13.Nd6+= Qe7 (13...Qd5 14.Bc4 Be6 15.Bd5 Bd5 16.Qd3+–) 14.Nc8 Rc8 15.0-0 Nf7 16.Nh4 (16.c3 Ba5+/–) 16...Rd8 (16...Nd6 17.Qf3 e4 18.Nf5–+) 17.Nf5 Qc7 18.f4 (18.Qg4 Nd6 19.d3 Ra5=) 18...g6 (18...Rd2 19.Qe4 Ra5 20.Rae1+=) 19.fe5 (19.Qf3 Ra7 20.fe5 gf5 21.e6+=) 19...gf5+= 20.Rf5 (20.Qf3 Nd7 21.e6 Ng5+–) 20...c4 (20...Rd2 21.Qe4 Ra5 22.Rf6 Qa7=) 21.Bc4 (21.Bc4 Rd2 22.Qg4 Kh8 23.Bf7 (23.ef6?! Bc5 24.Kh1 Bf8+=) 23...Bc5 24.Kh1 Qf7 25.e6 (25.Rf6?! Qe7+–) 25...Ra4 26.Ra4+– (26.ef7 Rg4 27.Bf6 Rg7 28.Rc5 Rd8+–); 21.Qc4!? Qc4 22.Bc4 Bc5 23.Kh1+/–) 1–0. Benassi,Aspasio (2085) – Prochazka,Dalibor (2245), IECG, 2001.

4.c4 c5 5.a4 (5.Nc3 Ne7=) 5...b6 (5...ab5 6.ab5 Ra1 7.Ba1=) 6.e4 (6.ba6 Ba6 7.e4 Bb7=) 6...d6 (6...Bb7 7.Nc3=) 7.Nf3 Bg4 8.h3 (8.ba6 Na6 9.Be2 Ne7+=) 8...Bf3 (8...Be6!?=) 9.Qf3+= Nd7 10.Nc3 Ne7 11.g4 (11.a5 ba5 12.Ra4 ab5 13.Nb5 Nb6=) 11...Ng6 (11...g6 12.a5+=) 12.Nd5 (12.ba6 Ra6 13.Nd5 Ne7=) 12...Nh4 (12...Ne7 13.ba6 Ra6 14.Be2=) 13.Qg3 g5 (13...Ng6 14.ba6 Ra6 15.Qf3+=) 14.Be2 Bg7 15.d3 (15.ba6 Ra6 16.Bc3 h5+=) 15...Nf8 (15...h5+=) 16.0-0-0 (better is 16.ba6!? Ra6 17.f4+=) 16...Ne6= 17.Kc2 (17.Kd2 Nd4=) 17...Nf4 (17...ab5 18.ab5 Nf4 19.Rde1=+) 18.Nf4 (18.Kd2 Nd5 19.cd5 ab5 20.ab5 Ra5=+) 18...ef4=+ 19.Qg1 (19.Qh2 f3 20.Bf1 ab5 21.ab5 0-0=+) 19...0-0 (19...f3 20.Bf1=+) 20.Ra1 (20.Kd2 f3 21.Bf1 ab5 22.ab5 Ra2–/+) 20...ab5 (20...f3 21.Bf1=+) 21.ab5 Ra1 (21...f3 22.Bf1=+) 22.Qa1 Qa8 (better is 22...f3 23.Bf1 Re8=) 23.Qa8+/– Ra8 24.Bd1 (24.d4 cd4 25.Rd1 f3+/–) 24...Kf7 (24...f3 25.d4+=) 25.Kb3 Ng2 (25...Ke7 26.d4+=) ½–½. Fournier,Frederic – Chalvet,Philippe, Lamorlaye, 1994.

4.c4 d5 5.e3 dc4 6.Bc4 ab5 7.Bb5 c6 8.Bc4 Nd7 9.Bg8 Rg8 10.Qh5 (10.Qc2 Nc5 11.Qh7 Qd5 12.Qg6 Kd8-/+) 10...g6-/+ 11.Qh7 (11.Qe2 b5-/+) 11...Rg7 12.Qh4 Nb6 (better 12...Nc5 13.Bc3 Qd3 14.Qf6 Ra2 15.Qe5 Re7 16.Qc5 Ra1 17.Ba1 Qb1 18.Ke2 Qa1-+) 13.Nf3 Qd3 (13...Bf5=) 14.Nc3 (better 14.Qf6 Nd7 15.Qe6 Re7 16.Qg8+=) 14...Nc4=+ 15.Qf6? (15.Bc1!? g5 16.Qe4=+) 15...Nb2 (15...Rf7!? 16.Qg5 Rf3 17.gf3 Qd2 18.Kf1-+) 16.Ne5-/+ Qf5 (16...Qd6 17.Qd6 Bd6 18.Rb1-/+) 17.Qf5 Bf5 18.0-0 Nd3 19.Nf3 Bb4 (19...b5 20.Nd4 b4 21.Nf5 gf5 22.Ne2-+) 20.Nd4-/+ Bd7 (20...Rd7 21.h4-/+) 21.Ne4 (21.Rfb1 Rf7-/+) 21...0-0-0 (21...Re7!? 22.f3-/+) 22.a3 Be7 23.a4 (23.Rfb1 Bf5 24.Nf5 gf5-/+) 23...Kc7 (better 23...c5 24.Ra3 Nf2 25.Nf2 cd4-+) 24.Ra3?? (better 24.Rfb1=+) 24...Ba3-+ 25.Rb1 Be7 0-1. gkogan (2115) - zumpili (2190), Rated Bullet game, lichess.org, 2017.

4.e3 a5 5.a3 d5 6.d4 e4 7.c4 b6 (better is 7...f5!?+=) 8.Qh5+/– g6 9.Qd5 Qd5 10.cd5 Bh6 (10...Bd6!?+/–) 11.Nc3 (11.Nd2 Bf5+–) 11...Ne7 (11...Bb7 12.Ne4 Bd5 13.Nc3+–) 12.Bc4 (12.Ne4 Bg7 13.Bc4 Bb7+–) 12...Bb7 (12...f5 13.Nge2+–) 13.Ne4 0-0?? (13...Nd7 14.Nc3 f5+–) 14.d6 Kh8 (14...Kg7 15.de7 Re8 16.d5+–) 15.de7 Re8 16.f3 (better is 16.Nf6!? Re7 17.Bd5 c6+–) 16...Bg7 (16...Be3 17.d5 Bh6 18.Bf6 Bg7 19.0-0-0+–) 17.d5 (17.Nc3 Re7 18.Nd5 Rd7+–) 17...Re7 (17...Nd7 18.Nh3+–) 18.Ne2 (18.Bf6 Bf6 19.Nf6 Re3 20.Kd2 Re5+–) 18...f5 19.Bg7 Kg7 20.Ng5 Re3 (20...Bc8 21.Nf4+–) 21.Ne6 Kf7 (21...Kf6 22.Nc7 Ra7 23.Kd2+–) 1–0. Korsvold,Jon_Egil – Fotland,Oyvind Angel, Vadsosjakken, Klasse C, 2003.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 a6).

4.e4 c6 5.bc6 dc6 6.Nf3 Nd7 7.d4 Bb4 8.c3 Ba5 9.Nbd2 b5 10.Nb3 Ne7 11.a4 b4 12.Na5 Qa5 13.Nd2 bc3 14.Nc4 c2 15.Na5 cd1Q 16.Rd1 Rb8 (better is 16...ed4!? 17.Bd4 c5+=) 17.Ba3+– Nb6?? (better is 17...ed4 18.Be7 c5+–) 18.Be7 Na4 (18...Ra8 19.Nc6 Bb7 20.de5 Bc6 21.ef6 Ba4 22.Rd6+– (22.fg7?! Rg8 23.Rd6 Ke7 24.Rb6 Rg7+–)) 19.de5 (19.Nc6?! Rb6 20.de5 Rc6 21.ef6 Kf7 22.fg7 Re8+–) 19...Nc3 (19...Bd7 20.ef6 Nc3+–) 20.Rd8 Kf7 (20...Ke7 21.Nc6 Kf7 22.Rh8 (22.Nb8? Rd8 23.f3 Bb7–+) 22...Rb1 23.Kd2 Ne4 24.Kc2 Rf1 25.Rf1+– (25.Rc8?! Rh1 26.f3 Nf2=)) 21.Rh8 Rb1 22.Kd2 Ne4 23.Kc2 Ra1 (23...Rb6 24.ef6 gf6 25.Bd8+–) 24.Bc4 Ke7 25.Nc6 Kd7 26.Ra1 Kc6 27.Rc8 Kd7 28.Rf8 fe5 29.Rf7 Kc6 30.Ra6 Kc5 31.Kd3 Ng5 (31...Nd6 32.Rc7 Kb4 33.Rb6 Ka5 34.Rb8 Nc8 35.Rc5 Ka4 36.Ra8 Na7 37.Ra7 Kb4 38.Rb5) 32.Rc7 Kb4 33.Rb6 (33.Rb7 Kc5 34.Rb5) 33...Ka3 (33...Ka5 34.Rb5 Ka6 35.Rb8 Ka5 36.Ra7) 34.Ra7 1–0. Taulien,Hans_Juergen (2350) – Boese,Fee (1945), remoteschach.de, 2002.

5.c4 b6 6.e3 Bb7 7.Nf3 Qe7 8.Be2 d6 9.0-0 Nd7 10.h3 (10.d4 0-0-0+=) 10...g5 11.Nc3 h5 (better 11...0-0-0+=) 12.Ne5?? (better 12.Nd5 Bd5 13.cd5+=) 12...fe5 (worse 12...Qe5 13.Bh5 Kd8 14.d4=+) 13.Bh5 Rh5?? (better 13...Kd8-/+) 14.Qh5+= Qf7 15.Qf7 Kf7 16.Nd5 (16.f4 gf4 17.ef4 Ngf6+-) 16...Bd5 17.cd5 Ngf6 18.d4 (18.f4 Kg6+=) 18...ed4 (18...Nd5 19.Rac1 ed4 20.Bd4=) 19.Bd4 Nd5 20.Rfc1 (better 20.Rad1=) 20...Bg7 (better 20...Nc5 21.Rd1 Ke6=) 21.e4?? (better 21.Bg7 Kg7 22.e4+-) 21...Bd4-+ 22.ed5 Ba1 23.Ra1 Ne5 (better 23...Nf6!? 24.Rd1-+) 24.Rc1 Rc8 25.g3 (25.Kf1 Nd3 26.Rd1 Nc5-+) 25...Ke7 (25...Nd7!? 26.Rc4-+) 26.Kg2 Kd7 27.h4 (27.Rd1 Ng6-+) 27...gh4 28.gh4 (28.Rh1 Ng6-+) 28...Rh8 (better 28...Rg8!? 29.Kf1-+) 29.Kh3 (29.Rh1 Rg8 30.Kf1 Rg4-+) 29...Nd3 30.Rc2 Rf8 31.Kg3 (31.h5-+) 31...Rg8 32.Kf3 (32.Kh2 Rg4 33.h5 Rh4 34.Kg3 Rh5 35.Kf3-+) 32...Ne5 (better 32...Ne1 33.Ke4 Nc2-+) 33.Kf4?! (33.Ke4 Rg4 34.f4 Rh4-+) 33...Rh8 (better 33...Rg4!? 34.Kf5 Rh4 35.f4 Rh5 36.Ke4-+) 34.Kg5 Rg8?? (34...Nf3 35.Kg4 Nh4 36.f4-+) 35.Kh5?? (35.Kf4 Rg4 36.Kf5 Rh4-+) 35...Rh8 (35...Rg4!? 36.Ra2-+) 36.Kg5 Nf3 37.Kg4 Nd4 (better 37...Nh4!? 38.f4-+) 38.Rc4 Ne2 (38...Rg8 39.Kf4 Rf8 40.Kg4-+) 39.Kg5 (39.h5!?-/+) 39...Ng1 40.h5 (better 40.Rc3-+) 40...Nf3 41.Kg6 (41.Kf4 Ne5 42.Rd4 Rh5-+) 41...Ne5 42.Kg7 Nc4 (better 42...Rh5 43.Rd4 Rf5-+) 43.Kh8+- Ke7 44.h6?? (better 44.Kg7+-) 44...Kf7 45.h7 (45.Kh7 Nb2 46.f4 Na4 47.Kh8 Nc5 48.f5 Nd7 49.Kh7 Nf8 50.Kh8 a4 51.f6 a3 52.h7 Ng6) 45...Ne5 46.f4 Nf3 (46...Ng6) 47.f5 Nd4 (47...Ne5 48.f6 Ng6) 48.f6= Nf5 (48...c5 49.bc6 Ne2 50.c7 Nf4 51.c8Q Ng6) ½-½. RichardSommer (1985) - Jorgenberg (2030), lichess.org, 2020.

5.e3 c6 6.Nf3 cb5 7.Bb5+= b6? 8.0-0 Ba6? 9.Ba6 Na6+/– 10.d4 e4+= 11.Nfd2 f5 12.f3+/– ef3 13.Qf3 Nf6 14.Qf5 g6?? 15.Qf6 Qf6 16.Rf6 Nb4 17.Na3 Be7 18.Rf3 Nd5 19.e4 Nf6 20.d5 Rf8 21.Raf1 g5 22.Bf6 Ba3 23.Bg5 h5 24.Nc4 Rb8 25.Na3 d6 26.Rf8 Kd7 1–0. valpa – footyhead, playchess.de, 2002.

5.e4 b6 6.Bc4+= Bc5 (6...Bb7!? 7.Nc3 Nh6+=) 7.d4+/– ed4?? (better is 7...Bb4 8.c3 Bf8+/–) 8.Qh5+– (8.Bd4?! Qe7 9.Nc3 Bb4+=) 8...g6 9.Qd5 Qe7 (9...Nh6 10.Qa8 d5 11.Bd5+–) 10.Qa8 Qe4 (10...c6 11.Qb8 Qe4 12.Ne2 Ne7+–) 11.Qe4 Ne7 12.Bd4 Bd4 13.Qd4 Rf8 14.Ne2 c5 15.Qd6 Bb7 16.Qb8 Bc8 17.Qb6 d5 18.Bd5! Nd5 19.Qc6 Kf7 20.Qd5 Be6 21.Qc5 Rc8 22.Qa7 Ke8 23.Qh7 g5 24.Nd4 Bf7 25.0-0 Rc7 26.Re1 Kd8 27.Nc6 Kd7 (27...Rc6 28.Qf7 Re6 29.Re6 f5 30.Re8) 28.Qf7 Kc8 29.Qg8 Kb7 30.Qb8 1–0. pcmvr (2830) – samantho (1920), net–chess.com, 2014.

5.e4 d5 6.ed5 Qd5 7.Nc3=.

6.Ba1 Ba3?? 7.Na3+– Qe7 8.Nc4 (8.Nb1 d5+–) 8...d5 9.Na5 (9.Nb2 Nh6+–) 9...b6 (9...Qb4 10.Nb3+–) 10.Nb3 Qb4 11.e3 Qb5 (11...Bg4 12.Nf3 e4+–) 12.Bb5 (12.Bb5 Bd7 13.Bd7 Nd7 14.d4+–) 1–0. DEFFM – GuestCXJK, freechess.org, 2017.

6.Ba1 Bb4 7.c4 d6 8.Qb3 Ba5 9.e3 b6 (9...Bf5 10.Bd3 e4 11.Bc2=) 10.Nf3 Be6 (10...Ne7 11.Be2=) 11.Be2+= Nd7 12.0-0 Nc5 13.Qc2 Ne7 14.d4 Bf5 15.Qa2 Ne4 16.Bd3 (16.Nh4 Be6+/-) 16...Bg6 (better 16...Ng5 17.Ne1 e4=) 17.Qc2+/- f5 (17...Ng5 18.Ng5 fg5 19.de5 de5 20.Rd1+-) 18.Rd1 (18.de5 0-0+-) 18...0-0 (18...ed4!? 19.Bd4 0-0+/-) 19.de5+- de5?? (better 19...Nc8+-) 20.Be4 fe4 (20...Qc8 21.Bd5 Nd5 22.Rd5 Bf7 23.Re5 Qd7+-) 21.Rd8 Rd8 22.Ne5 Be8 (22...h6 23.Ng6 Ng6 24.Bd4+-) 23.g4 h5 24.c5 (24.Qe4 Bb4+-) 24...Nc8 (24...hg4 25.c6 g3 26.hg3+-) 25.Qc4 Kh8 (25...Kf8 26.Qe4 bc5 27.Ng6 Bg6 28.Qg6+-) 26.Qe4 (26.Nf7 Kh7 27.Nd8 Bc6 28.Qf7 Bc3 29.Bc3 Bb5 30.Qg7) 26...h4 (26...Kg8 27.Nd7! Nd6 28.cd6 Bf7 29.Qe5 Bc3 30.Bc3 Rd7 31.Qg7) 27.Nc3 (27.Ng6 Kg8 28.Qe5 Rd1 29.Kg2 Rg1 30.Kg1 Bc3 31.Bc3 Kf7 32.Qg7 Ke6 33.Nf4) 27...h3 (27...bc5 28.Ng6 Bg6 29.Qg6+-) 28.f4 (better 28.Nd5 Rd5 29.Qd5 Kh7+-) 28...Bc3 (28...bc5 29.Ng6 Bg6 30.Qg6 Rd6 31.Qe8 Kh7+-) 29.Bc3 Rd1 30.Kf2 Bb5 31.Kg3 (31.Ng6 Kh7 32.Ne7 Kh8 33.Qf5 Rd2 34.Kg3 Rg2 35.Kh4 Rg4 36.Qg4 Ne7 37.Qg7) 31...Rg1 32.Kh4 Ne7 33.Ng6 Ng6 (33...Kg8 34.Qe6 Kh7 35.Nf8 Kh8 36.Qh6 Kg8 37.Qg7) 34.Qg6 Rd1 (34...Rg4 35.Qg4 bc5 36.Qg7) 35.Qg7 1-0. ClayPigeons (2135) - albibujupi (2155), Rated Bullet game, lichess.org, 2019.

6.Ba1 c5 7.e3 e4 8.Qh5+/– g6 9.Qd5 f5?? (better is 9...d6+/–) 10.Bh8+– Ne7 11.Qc5 (11.Qd6 Nec6 12.Qg3 d5 13.bc6 Nc6+–) 11...Qa5 (11...d6 12.Qd4+–) 12.Bc4 (better is 12.Qd6 Qa2 13.Nc3 Qa1 14.Ke2 Qa8+–) 12...Nec6 (12...Na6 13.Qa3 Qa3 14.Na3 Nc7+–) 13.Qd5 (13.bc6 Qc5 14.cd7 Bd7+=) 13...Qb4 (13...Nd8 14.Qe5 Ne6 15.Qb8+–) 14.Qf7 Kd8 15.Bf6 Be7 16.Be7 (better is 16.Nc3 d5 17.Nd5 Qc5+–) 16...Ne7 17.Bb3 (17.Nc3 b6+–) 17...b6 (17...d5 18.Nc3+–) 18.Ne2 Bb7 (18...h5 19.Nbc3 Bb7 20.0-0+–) 19.Qf8 (19.Nbc3 Qd6+–) 19...Kc7 20.Nbc3 Qa3 (20...Qd6 21.Qh6+–) 21.0-0 Qd6 1–0. GuestRKSH – GuestTTLF, freechess.org, 2016.

6.Ba1 c5 7.e4 d6 8.Bc4 Ne7 9.Nf3 Ng6 10.0-0 b6 11.Nc3 Be7 12.Nd5 Nd7 13.d3 Ndf8 14.Bb2 Ne6 15.g3 (15.c3 Ngf4+-) 15...0-0 16.Qa1 Kh8 17.Qa7 (17.Ne7?! Ne7 18.Qa2 Nc7=) 17...Qd7? (better 17...f5+-) 18.Qd7+- (18.Qb6?! f5 19.Ra1 fe4+-) 18...Bd7 19.Nb6 Bc8?? (19...Bb5 20.Be6 Rb8+-) 20.Nc8 Rc8 21.Be6 (21.Be6 Ra8 22.Rb1+-) 1-0. onur604 (2320) - lehrervonach (2015), lichess.org, 2020.

6.Ba1 d6 7.c4 Bd7 8.e3 Be7 9.Nf3 Nh6 10.Be2 Nf7 11.0-0 0-0 12.Nc3 c6 13.d4 cb5 14.cb5 ed4 (better 14...Be6!?+=) 15.Nd4+- d5 (15...Qe8 16.Bf3 b6 17.Nd5+-) 16.Bf3 Qb6 (16...Kh8 17.Bd5 Qb6 18.Qd3+-) 17.Nd5 Qd8 18.Ne7 Qe7 19.Qb3 (19.Bb7?! Bb5 20.Nb5 Qb7+-) 19...Kh8 (19...b6 20.Bb2 Rc8 21.Ra1+-) 20.Bc3 Ne5 (20...Ng5 21.Bb4 Nf3 22.Nf3+-) 21.Bb4 Nf3 22.Nf3 Qf7 23.Qd3 (better 23.Qf7 Rf7 24.Nd4+-) 23...Rd8 24.Rd1 Qe8 25.Nd4 (better 25.Qd5+-) 25...Bb5+= 26.Qb3?? (26.Nb5 A pinning theme 26...Rd3) 26...Na6?? (better 26...Ba4 27.Qd3 Bd1 28.Qd1 Nc6-+) 27.Ba5 (27.Ra1 Nb4 28.Qb4 Bc6=) 27...Rd6 (27...Ba4 28.Qb6 Bd1 29.Qd8 Qd8 30.Bd8 Nc5=) 28.h3 (28.Qa3 Rd7+=) 28...h6 (28...Ba4!? 29.Qb7 Bd1-/+) 29.Nb5 (29.Qa3!? Rd7 30.Rc1+=) 29...Rd1= 30.Qd1 Qb5 31.Qd8 Kh7 32.Bc3 Nc5 33.Bd4 Ne4 34.Qe7 Ng5?? (better 34...Qb1 35.Kh2 b5=) 35.Bf6+- Do you see the mate threat? 35...Qb1 36.Kh2 Qg6 37.Bg5 hg5 38.Qb7 Qd6 (38...g4 39.h4+-) 39.g3 Qf6 40.Qg2 (40.Qe4 Kh6 41.Kg2 Qb6+-) 40...Kg6 (40...Kh6 41.e4+-) 41.Kg1 (41.Qe4 Kf7 42.Kg2 Qd8+-) 41...Kh5 (41...Qa1 42.Qf1 Qe5+-) 42.Kf1 (42.Qd5 Kh6+-) 42...g6?? (better 42...Qa1 43.Ke2 Qa2 44.Kd3 Qb3 45.Kd4 Qb4 46.Ke5 Qe7 47.Kd4 Qb4 48.Ke5 Qe7 49.Kd4 Qb4=) 43.Qe4 Qa1 (43...Kh6 44.Qd4 Qf8 45.e4+-) 44.Kg2 Qf6 (44...Qh8+-) 45.Qf3 g4 (45...Qf3 46.Kf3 g4 47.hg4 Kg5+-) 46.Qf6 Kh6 47.Qf4 (47.Qh8 Kg5 48.e4 gh3 49.Kf3 h2 50.Qh4) 47...Kh7 48.Qg4 (48.Qf7 Kh8 49.h4 g5 50.Qf6 Kg8 51.h5 Kh7 52.h6 Kg8 53.Qg7) 48...Kg7+- 49.h4 Kh7 50.h5 Kg7 51.Qg6 (51.Qg6 Kh8 52.Qf6 Kg8 53.h6 Kh7 54.Qg7; 51.hg6 Kf6 52.g7 Kf7 53.g8Q Ke7 54.Q4e6) 1-0. RichardSommer (1975) - NowAfter (1935), lichess.org, 2020.

6.Ba1 d6 7.e3 Bd7 8.c4 c6 9.Qb3 (9.Nc3 Ne7+=) 9...cb5 (9...Bf5!?=) 10.cb5+= Be7 (10...Bf5 11.Bc4 Nh6 12.Nc3+/-) 11.Bc4 Nh6 12.Nf3 Bg4 13.Ng1 (better 13.h3 Bh5 14.Nc3+/-) 13...Nd7 14.f3 (14.Nc3 Nb6=) 14...Bf5 (14...Nc5 15.Qa2 d5 16.fg4 dc4 17.Qc4=+) 15.d4 (15.Qa2!?=) 15...Nb6=+ 16.Ne2?? (better 16.Be6=+) 16...Nc4-+ 17.Qc4 Nf7 (better 17...Bb1 18.Kf2 Bg6-+) 18.e4 (18.Nbc3 Qc8 19.Qc8 Bc8 20.Kf2=) 18...Bg6 (18...d5 19.Qd3 de4 20.fe4=+) 19.de5 (better 19.Nbc3+=) 19...Ne5-/+ (worse 19...fe5 20.Nbc3+=) 20.Qa4 (20.Qd4 Qa5 21.Nd2 d5-/+) 20...0-0 (better 20...Nd3!? 21.Kf1 d5-/+) 21.0-0=+ d5 22.ed5 Bb1 (22...Bd3 23.Nbc3=+) 23.Rb1= Qd5 24.Nc3 (24.Rd1 Bc5 25.Kf1 Qc4 26.Qc4 Nc4=) 24...Bc5 (24...Qc5 25.Kh1=+) 25.Kh1= Qd3 26.Qa2 (26.Rd1 Qc4=) 26...Kh8 (26...Qc4 27.Qc4 Nc4 28.Ne4=+) 27.Ne4 Bb6 28.h3 (28.Be5 fe5 29.h3 h6=) 28...h6 (28...Nc4 29.Bc3=+) 29.Be5= fe5 30.Rb3?? (better 30.Rc1=) 30...Qf1 (better 30...Qd1 31.Kh2 Qg1 32.Kg3 Qe1 33.Nf2-+) 31.Kh2 Qg1 32.Kg3 Qc1 (32...Qe1 33.Nf2 Rf6-+) 33.Rc3?? (better 33.Qd2 Qc8 34.Kh2=) 33…Qf4 0-1. Antares_Sco (2010) - Thaifun (1925), Hourly Blitz Arena, lichess.org, 2021.

6.Ba1 d6 7.e3 Bd7 8.c4 Ne7 9.Nc3 c6 10.Nf3 g5 (10...d5 11.d4 e4 12.Nd2+=) 11.Be2 Bg7 12.0-0 0-0 13.d4 h5 (13...g4 14.Nd2+=) 14.de5 fe5? (14...de5 15.c5+/–) 15.Qc2 (15.Qd6!? Bg4 16.Qb4+–) 15...Bf5 (15...Nf5 16.Nd2+=) 16.Bd3 (better is 16.e4 g4 17.ef5 gf3 18.Bf3 Nf5 19.Bh5+/–) 16...e4? (better is 16...g4 17.Ng5 h4+=) 17.Be4 (17.Ne4 Ba1 18.Ra1 g4+–) 17...Be4 (better is 17...d5 18.cd5 g4+–) 18.Ne4 Ba1 19.Ra1 Nd7 (19...g4 20.Nd4 Qc8 21.Nd6+–) 20.Neg5 (20.Nd6 g4 21.Nb7 Qc7+–) 20...Nf5 21.Ne6 White prepares c5 (better is 21.bc6 bc6 22.c5+–) 21...Qe7 (21...Qf6 22.Ned4 Nd4 23.ed4 cb5 24.cb5 Qf5+–) 22.Nf8 Qf8 23.Ra7 (23.bc6 bc6 24.Qe4 Qf6 25.Ra8 Kg7 26.Qc6 Nc5+–) 23...Qb8 24.Qa2 Nb6 (24...Qc7+–) 25.c5 d5 26.cb6 Kf7 27.bc6 Ke6 28.Rb7 (better is 28.Ra8 Qd6 29.Qb2 d4+–) 28...Qd6 29.Ng5 (29.Qa1 Ne7 30.Qg7 Qb4 31.Nd4 Qd4 32.Qe7 Kf5 33.ed4 h4 34.Qe5 Kg6 35.Rg7 Kh6 36.Qg5) 29...Kf6 30.f4 Ne3 31.Rf7 Kg6 32.Qb1 Kh6 (32...Nc2 33.Qc2 Kh6 34.Qh7) 33.Rh7 1–0. GuestGKFL – GuestXZZT, freechess.org, 2017.

6.Ba1 Qe7 7.c4 Qb4 8.e3 Qa5 9.Nc3 Bb4 10.Nd5 c6 11.Nb4 Qb4 12.Nf3 cb5 13.cb5 d5 14.Be2 Ne7 15.Bc3 Qc5 16.0-0 Be6 17.Qb1 0-0 18.Bb4 Qc7 19.Rc1 Qd7 20.Qb2 Rc8 21.Rc8 Qc8?? 22.Qc3 Qc3= 23.dc3 Nc8 24.Nd2 Nb6 25.Nb3 N8d7 26.Nc5 Kf7 27.Nb7+/– f5 28.Bd3 e4 29.Be2 Ne5 30.f3 g6 31.Nd6 Kf6 32.Ne8 Kf7 33.Nc7 Bd7 34.Bc5 Nec4? 35.Bc4 Nc4 36.Nd5 Be6? 37.Nc7 Ne5 38.b6 Nc6 39.b7 Bd7 40.Bd6 Nb8 41.Nd5 Bc6 42.Bb8 Bb7?? 43.c4+– Ke6 44.Nf4 Kd7 45.fe4 Kc6 46.Kf2 Kc5 (46...Kc5 47.e5 Kc4+–). j1a9n55 – prety, internet, 2011.

6.Ba1 Nh6 7.d4 ed4 8.Bd4 Be7 (8...d5 9.e3=) 9.Be3 (9.Ba7 b6 10.Qd5 Na6 11.ba6 Ba6+-) 9...0-0 (9...Nf7 10.Ba7 b6 11.Bb8=) 10.Bh6 gh6 11.Qd2 (11.e4 d6+=) 11...Rf7 (11...d5 12.Nf3+=) 12.Qh6 (12.e4 Rg7+-) 12...c6 13.e3 Qa5 14.Nd2 Qa1 15.Ke2 cb5 16.Ngf3 b4 17.g3 (17.Nb3 Qc3 18.Kd1 Nc6+=) 17...Nc6 (17...Qa6 18.Kd1 Qa1 19.Ke2 Qa6 20.Ke1 Qa1 21.Ke2=) 18.Bg2 (18.Nb3 Qb2 19.Kd1 d5=) 18...Qa6= 19.Ke1 Qa1 20.Ke2 Qc3 (20...Qa6 21.Kd1 Qa1 22.Ke2=) 21.Qh4 (21.Ne1 Rf8+=) 21...Qc2 22.Qg4 Rg7 23.Qf4 (better 23.Qh5 Qg6 24.Qd5 Qf7 25.Nd4=) 23...Ne5 (better 23...d6=+) 24.Ne5+- fe5 25.Qe5 Qc6?? (better 25...d6 26.Bd5 Kh8+-) 26.Bc6+- dc6 27.Ra1 (better 27.Qb8!? Bf8 28.Qc8 Rf7+-) 27...Bg4 (27...Kf7 28.Qf4 Kg6 29.Nf3+-) 28.f3 Bh5 (28...Bd7 29.Ra8 Kf7 30.Qh5 Ke6 31.Qh3 Kd6 32.Ne4 Kc7+-) 29.Ra8 Bf8 30.Qh5 Kh8 (30...Rg3 31.hg3 Kg7 32.Qe5 Kf7 33.Qf5 Ke7 34.Qf8 Kd7 35.Qf7 Kd6 36.Ne4 Ke5 37.Re8) 31.Rf8. aravind555 – smokeyred, lichess.org, 2018.

6.Ba1 Nh6 7.e3 Nf7 8.Nf3 d5 9.c4 Be6 (9...dc4 10.Bc4 Nd6 11.d3=+) 10.d4 Bb4 (10...dc4 11.Nc3=+) 11.Bc3= e4 (better 11...Bc3 12.Nc3 dc4=) 12.Bb4+/- ef3 13.Qf3 dc4 (13...Ng5!? 14.Qg3 dc4+-) 14.Qb7+- Nd7 (14...Bd5 15.Qa7 Nd7 16.Nc3+-) 15.Nd2 (15.Qc6 Nd6 16.Ba5 Qb8+-) 15...Nd6? (better 15...Nb6 16.Qc6 Qd7+-) 16.Bd6 cd6 17.Bc4 Bc4 (17...Kf7 18.Be6 Ke6 19.Qe4 Kf7 20.Qd5 Ke7 21.Nc4+-) 18.Nc4 0-0 19.Qd5 Kh8 20.Nd6 Qe7 21.0-0 Ra8 (21...Nb6 22.Qc5 Nd7 23.Qc7+-) 22.Rc1 (22.Qa8 Qf8 23.Qd5 Nb6+-) 22...h6 (22...Rf8 23.Rc7 h6 24.h3+-) 23.Nf7 (better 23.Qa8 Kh7 24.Rc7 Qd6 25.Qe4 f5 26.Qf5 Qg6 27.Qg6 (27.Rd7?? Qf5 28.Rg7 Kg7-+) 27...Kg6 28.Rd7+-) 23...Kh7 24.Rc7 (better 24.Qa8 Qf7 25.Qb7+-) 24…Ra1 (24...Ra1 25.Rc1 Rc1) 0-1. danishguy (2120) - medussa73 (2085), Rated Bullet game, lichess.org, 2020.

7.c4 Bb7 8.e3 Ne7 (8...Bb4 9.Bc3 Bc3 10.Nc3=) 9.Nf3 Nf5 10.Be2 Bc5 (10...d5 11.cd5 Qd5 12.Nc3=) 11.0-0+= 0-0 (11...e4 12.d4 Bb4 13.Nfd2+=) 12.Qc2 (12.d4 ed4 13.ed4 Bb4+=) 12...g6 (12...e4 13.Ne1=) 13.Nc3 c6 (13...Qe7 14.Nd5 Bd5 15.cd5+=) 14.Ne4 (14.Rb1 Be7+–) 14...cb5 (14...Be7 15.d4 d5 16.Nc3 ed4 17.Nd4 Nd4 18.ed4 cb5 19.Nd5 Bd5 20.cd5+=) 15.Nc5 bc5 16.cb5 Bf3 (16...Qb6 17.Rb1+=) 17.Bf3+/– Re8 (17...Qb6!?+/–) 18.Bd5 (18.Qc5 d6 19.Qd5 Kg7+–) 18...Kg7 19.f4 (19.e4!? Ne7 20.Qc5 d6+–) 19...d6+/– 20.fe5 fe5 21.Rf5 (better is 21.e4!? Nd4 22.Bd4 ed4 23.Rf7 Kh8 24.Qd3+/–) 21...gf5= 22.Qf5 Nd7 (22...Rf8 23.Qe6=) 23.Qf7 (23.Bc6 Re7=) 23...Kh6 (23...Kh8=) 24.g4 (24.Bc6 Re7 25.Qf2 Kg7=) 24...Nf6 (better is 24...Rf8!? 25.Qh5 Kg7–/+) 25.g5+= Kg5 26.Qg7 Kf5 (26...Kf5 27.e4! Ne4 28.Qh7 Kf6 29.Qf7 Kg5 30.Be4 Rf8 31.Qg7 Kf4+–). DEFFM – GuestHQYL, freechess.org, 2016.

7.c4 Bc5 8.e3 Ne7 9.d4 ed4 10.Bd4 Bd6 11.Nf3 Nf5 12.Bd3 Nd4 13.Nd4 0-0 14.Qb3 Kh8 15.Nf5 Be5 16.Nc3 g6 17.Nd4 Qe8 18.Nd5?? Bd4–+ 19.0-0? Be5 20.f4 Bd6 21.Qb2 g5! 22.Nf6 Qf7?? 23.Nh7 Qg7 24.Qc2?? Rf7 25.Ng5+= Re7 26.e4 Bc5 27.Kh1 d6 28.e5 de5 29.Nh7? Nd7 30.fe5 Re5 31.Nf8? Nf8 32.Rf8 Bf8 33.h3 Re1 34.Kh2 Bd6 35.g3 Qg3 0–1. iczker – antonioag, internet, 2011.

7.e3 Bb7 8.Nf3 d5 9.Be2 Bd6 10.0-0 Nd7 11.c4 Ne7 12.Nc3 d4 (12...c5!? 13.bc6 Bc6+=) 13.ed4+/– e4 14.Ne1 0-0 15.d3 ed3 (15...f5 16.de4 fe4 17.Qb3+/–) 16.Nd3+– Qe8 17.Bh5 g6 (17...Qa8 18.d5+–) 18.Bf3 (18.Bg4 f5 19.Bf3 Bf3 20.Qf3 Qf7+–) 18...Bf3 19.Qf3 (19.gf3?! Qf7 20.Qb3 Nf5+=) 19...Nf5 (19...Qf7 20.d5+–) 20.Re1 Qf7 21.Nd5 Nd4?? (better is 21...Rd8+–) 22.Bd4 Kg7 23.Qe3 1–0. DEFFM – GuestLRML, freechess.org, 2017.

7.e3 d6 8.Ne2 (8.d4 Bb7+=) 8...Qd7 9.Ng3 Bb7 10.c4 (10.d4 Be7+=) 10...Nh6 (10...d5 11.cd5 Bd5 12.d4=) 11.Nc3 Nf5 12.e4 (12.Nf5 Qf5 13.d4 Nd7+=) 12...Ng3 13.hg3 Be7 14.Bd3 0-0 (14...Qd8 15.Be2+=) 15.Qh5 (15.c5 Qe8 16.Bc4 Kh8+-) 15...h6 16.Qg6 (16.Qg6 Qe8 17.Rh6 Qg6 18.Rg6+-) 1-0. aravind555 - joeljj97, lichess.org, 2019.

7.e3 Ne7 8.c4 d6 9.Be2 Nd7 10.d4 Bb7 11.Nf3 Bf3 (11...Qa8 12.Bc3+=) 12.Bf3+/– Nf5 (12...f5 13.Nc3+/–) 13.Bh5 (13.0-0 Ne7+/–) 13...g6 14.Bf3 Bg7 15.0-0 (15.Nc3 Ne7+/–) 15...0-0 (15...Ne7 16.Nc3+/–) 16.Bd5 Kh8 17.Nd2 ed4 (17...Ne7 18.Be6+/–) 18.ed4 Nd4? (better is 18...Ne7 19.Be6 f5+/–) 19.Bd4+– c5 (19...Re8 20.Qa1+–) 20.Bb2 (20.bc6!? Nc5+–) 20...Ne5 (20...Re8 21.Qa1+–) 21.Nf3 (21.f4 Nd3 22.Bc3 f5+–) 21...Qc8 (21...Re8 22.Qd2+–) 22.Qc2 (22.Re1 Re8+–) 22...Qg4 23.h3 Nf3 (23...Qf4 24.Ra1+–) 24.Bf3 Qd7 (24...Qe6 25.Bd5 Qd7 26.Ra1+–) 25.Ra1 (25.Rd1 Rd8+–) 25...Re8 (25...f5+–) 26.Bc6 (26.Bc6 Qe7 27.Be8 Qe8 28.Qd1+–) 1–0. DEFFM – GuestYZST, freechess.org, 2016.

7.e4 Ne7 8.Qh5+= g6 9.Qf3 Bb7? (better 9...Bg7=) 10.Qf6+- Rg8 11.Nf3 (11.Qh4 Nc8 12.Qh7 Rg7+-) 11...Be4 12.Ng5 Bd5 13.Nc3 Be6 (13...Bg7 14.Nd5 Bf6 15.Nf6 Kf8 16.Nfh7 Ke8 17.Nf6 Kf8+-) 14.Ne6 de6 15.Bc4 (15.Qe6 Bg7+-) 15...Bg7 16.Qe6 c6? (16...Rf8+-) 17.Qf7 (17.bc6 Nbc6 18.Nd5 Qd7 19.Ne7 Qe6 20.Be6 Ne7 21.Bg8 Ng8+-) 17...Kd7 18.0-0 (18.Bb2 Bh8+-) 18...Kc7 (18...Qc7 19.Bb2 Qd6 20.Ra1+-) 19.bc6 Nbc6 20.Rb1 (better 20.Nd5 Kb7 21.Ne7 Ne7 22.Qf3 Kc7 23.Bg8 Qg8 24.Re1+-) 20...Nd4 (20...Qd2 21.Rd1 Qc2+-) 21.Nd5 Kc8 1-0. DEFFM – GuestDHKK, freechess.org, 2020.

7.c4 b6 8.e3 d5 9.cd5 Qd5 10.Nc3 Qd8 11.Nf3 Bb7 12.Be2 (12.Bc4 Nd7+=) 12...Ne7 13.0-0 0-0 14.Na4 (14.d4 ed4 15.Bc4 Kh8 16.Nd4 Bd4 17.Qd4 Qd4 18.ed4 Nf5+=) 14...Bd6= 15.d4 e4 16.Nd2 f5 17.f3 (17.Nc3 Kh8+=) 17...Nd7 18.fe4 fe4 19.Nc3 (19.Rf8 Qf8 20.Nc3 Nf6=) 19...Nf6 (19...Rf1 20.Qf1 Nf6 21.Qb1=) 20.Qb3 (20.Qb1 Ned5 21.Qb3 Kh8 22.Nce4 Ne4 23.Rf8 Bf8 24.Ne4 Qh4=) 20...Kh8= 21.Qe6 Increasing the pressure on the isolated pawn on e4 (21.Bb2 Qa8+=) 21...Ned5=+ 22.Nde4? (better 22.Qh3=+) 22...Bc8-+ 23.Qd5 Nd5 24.Nd5 (24.Nd6 Rf1 25.Kf1 Qd6-+) 24...Rf1 (better 24...Bh2 25.Kh2 Rf1 26.Bf1 Qh4 27.Kg1 Qe4 28.Bc3 Qd5 29.Be1-+) 25.Kf1 Bh2 26.g3 (26.Bc4 Be6 27.Nec3 Qf8 28.Ke2-+) 26...Qd5 27.Bf3 (27.Bd3 Bf5 28.Kg2 Be4 29.Be4 Qe4 30.Kh2 Qe3-+) 0-1. RichardSommer (2155) - DavaiSozdadimCzactie (2115), lichess.org, 2020.

7.c4 d6 8.e3 Ne7 9.Ne2 Bf5 (9...0-0 10.d4 Bb6 11.Nd2=) 10.Ng3= Bg6 11.Be2 0-0 12.0-0 Kh8 (12...Re8 13.d4 Bb6 14.c5 dc5 15.de5 fe5 16.Bc4 Kh8 17.Be5+=) 13.d4+= ed4 14.ed4 Bb6 15.Bf3 c6 16.Qb3 Bf7 (16...Re8 17.Bc3=) 17.Qc2 (17.Na3 Re8+=) 17...d5 18.c5 Bc7 19.Nd2 (19.Nc3 b6+=) 19...cb5= 20.Qb3 Qd7 (20...Be8 21.Ne2=) 21.Rb1 (21.Be2 b6+=) 21...Nf5 (21...Bg6 22.Rb2=) 22.Nf5 Qf5 23.Qb5 Be8? (better 23...Qf4!? 24.Nf1 Nc6+=) 24.Qb7+- Bc6?? (better 24...Bf4+-) 25.Qc7 Qg5 (25...Qc8 26.Rb8! Qb8 (26...Qc7?? 27.Rf8) 27.Qc6 Qb4+-) 26.Rb8 (26.Rb8 Kg8 27.Bc3+-) 1-0. aravind555 (1835) - Cavalcante2020 (1815), lichess.org, 2020.

7.c4 Ne7 8.e3 d5 9.Nf3 0-0 10.cd5 Nd5 11.Nc3 Be6 12.Bc4 Kh8 13.Qb3 Nc3?? (better 13...c6=) 14.Be6+- (14.dc3?! Bc4 15.Qc4 Qd6=) 14...Ne4 15.0-0?? (better 15.Qc2 Qd6 16.Bf5+- (16.Qe4?! Qe6 17.0-0 Qb6+=)) 15...Nd7?? (better 15...Nd2!? 16.Nd2 Qd2=) 16.d4?? (better 16.Qd5 Nd6 17.Bd7 Be3 18.fe3 Qd7 19.Ne5 Qb5 20.Qa2+-) 16...ed4+- 17.Nd4 (17.Qd5 de3 18.Qe4 ef2 19.Kh1 Qe7+-) 17...Ne5?? (17...Nd2!? 18.Qd5 Nf1 19.Kf1 Bd4 20.Bd4 Ne5=+) 18.Bd5 (better 18.Qd5!? Qd5 19.Bd5+-) 18...Nd2= 19.Qa2 (19.Ne6 Nb3 20.Nd8 Rd8 21.Bb3 Bd6+=) 19...Nf1 20.Ne6 Qe7 (20...Qe8 21.Nc5 Qb5-+) 21.Nf8+= Ne3? (better 21...Qf8 22.Kf1 Qd8+=) 22.Be5?? (22.Ne6 Ba3 23.fe3 Qb4+-) 22...fe5?? (better 22...Nd5 23.Nd7 Nb6 24.Nb6 h6-/+ (24...cb6?! 25.Qa8 Qf8 26.Qf8 Bf8 27.Bc7=)) 23.fe3?? (better 23.Ne6 h5 24.Be4+- (worse 24.fe3 Be3 25.Kf1 Qf6 26.Ke2 Bb6+-; 24.Nc5?! Qc5 25.fe3 Qe3 26.Kf1 Qd3 27.Kf2 Qb5+-)) 23...Be3-+ (23...Qf8?! 24.Qe2-/+) 24.Kf1 Qf8 25.Ke2 Qf2 (25...Bb6 26.Qa4-+) 26.Kd3-/+ Threatening mate... how? 26...Qf5?? (better 26...Qa2!? 27.Ba2 Bg1-+) 27.Ke2?? (better 27.Ke3 Qc8 28.Qb2+-) 27...Bd4?? (better 27...Bc5 28.Qa8 Bf8 29.Bb7 g6=+) 28.Qa8 (28.Qa8 Qf8 29.Qf8) 1-0. RichardSommer (2105) - A0111 (2070), lichess.org, 2020.

7.d4 Bb4 8.c3 Ba5 0–1. pcmvr (2450) – sagaz (2235), net–chess.com, 2006.

7.e3 Bb6 8.Nf3 d5 9.d4 e4 10.Nfd2 Nd7? (10...Ne7 11.c4=) 11.Be2 (11.Qh5!? g6 12.Qd5+-) 11...c6 12.c4 Nh6 (12...Ne7 13.0-0+=) 13.c5 Ba5 14.b6 0-0 15.0-0 f5 16.Nb3 Bb4 17.Bc3 (17.Nc1 Nc5 18.Na2 Na6 19.Ba6 Bd6+=) 17...Bc3+= 18.Nc3 f4 19.ef4 Rf4 20.f3 ef3 21.Bf3 Nf6 (21...Rf8 22.Qd2+=) 22.Qd2 Rh4 23.Bd1 Nhg4? (23...Ne4 24.Ne4 Re4 25.Bc2+/-) 24.Bg4 (better 24.h3 Nh6 25.Qg5+-) 24...Rg4+= 25.Qe2 Qf8 (better 25...Ne4+=) 26.Rf6?? (better 26.Qe5+/-) 26...Qf6-/+ 27.Qe8 Qf8 28.Qf8 Kf8 29.Nd2?? (29.Kf2 Rg6-/+) 29...Bf5 (better 29...Rd4 30.Nf3 Rc4-+) 30.Nf3 Be4 31.Kf2? (better 31.h3 Rg6 32.Ne4 de4 33.Ne5-/+) 31...Bf3-+ 32.Kf3 Rd4 33.Ne2 Rc4 34.Nf4 Rc5 (better 34...g5 35.Nd3 g4 36.Kf2 Rc2 37.Kf1 d4-+) 35.Ne6+- Ke7 36.Nc5 Kd6 (36...h5 37.Kf4 h4 38.Nb7+-) 37.Nb7 Kd7 38.Na5 1-0. danishguy (2140) - liealie (2140), Rated Bullet game, lichess.org, 2020.

7.e3 c6 8.c4 cb5= 9.cb5 d6 10.Bc4 (10.d4 Bb4 11.Bc3 Bc3 12.Nc3 Qa5=) 10...Bd7 (10...d5 11.Be2=) 11.Bg8 (11.d4 Bb4 12.Bc3 Qa5+=) 11...Rg8= 12.Qh5 Ke7 13.Qh7 (13.Nc3 h6=) 13...Bb5 14.Nc3 Bc6 15.Nf3 Na6 16.0-0 Nb4 (16...Bf3 17.gf3 d5 18.Rb1+=) 17.Bb2 (better 17.d4!? Bb6 18.de5 de5 19.Rd1+-) 17...Bf3= 18.gf3 Qf8 (18...Kf7 19.Ba3 Rh8 20.Qb1+=) 19.Qe4 (19.d4 Ba7 20.de5+-) 19...b6? (19...Nc6 20.Nd5 Ke6 21.Nf4 Kd7 22.Qf5 Ke8 23.Qe6 Kd8 24.Ra1+-) 20.Qb7 (better 20.d4+-) 20...Ke8?? (better 20...Ke6 21.d4 Qa8 22.Qa8 Ra8 23.dc5 bc5+=) 21.Ra1+- Qe7 22.Ra8 Kf7 23.Qe7 Ke7 24.Rg8 g5 (24...Nd3 25.Ba1 Kf7 26.Rb8+-) 25.Ne4 (better 25.Rg7!? Kf8 26.Rb7 Nd3+-) 25...Nd3 26.Nc5 (26.Bc3 d5 27.Nc5 bc5+-) 26...bc5 (26...dc5 27.Bc3 b5 28.Ba5+-) 27.Bc3 d5 28.Kf1 d4 (28...Ke6 29.Rb8+-) 29.ed4 (29.Ba5!? Kf7 30.Rc8 f5+-) 29...cd4 30.Bb4 (30.Ba5 Kf7 31.Ra8 Nf4+-) 30...Ke6?? (30...Nb4 31.f4 gf4 32.h4+-) 31.Ke2 (better 31.Re8 Kf5 32.Be7+-) 31...Nb4+- 32.d3 (32.f4 ef4 33.h4 gh4+-) 32...Kf5+= 33.Rf8 Nd5 34.Rd8 (34.Kd2 Nf4=) 34...Nf4 35.Kd2 Ng2 36.Rh8 Nh4 37.Ke2 Kf4 38.Rh4?? (better 38.Rf8 f5 39.h3=) 38...gh4-+ 39.h3 (39.Kf1 h3 40.Ke1 Kf3-+) 39...f5 Black prepares the advance e4 40.Ke1 Kf3 41.Kf1 e4 (41...f4!? 42.Ke1 Kg2 43.Ke2 f3 44.Ke1 Kh3 45.Kd2-+) 42.de4 fe4 43.Kg1 d3 44.Kf1 d2 (44...d2 45.Kg1 d1Q 46.Kh2 e3 47.fe3 Qd2 48.Kg1 Qg2) 0-1. aravind555 - stole23, lichess.org, 2019.

7.e3 d5 8.d4 ed4 9.ed4 Bd6 10.Bd3 Ne7 11.Ne2 Bg4 12.c4 c6 (better 12...dc4 13.Bc4 Nd7=) 13.c5+/- Bf4? (better 13...Be2!? 14.Qe2 Bf4+-) 14.f3+- Bh5? (14...Bf3 15.gf3 Be3+-) 15.Nf4 Qa5 (15...Bg6+-) 16.Bc3 (16.Bc3 Qa2 17.Nh5 Qg2 18.Ng3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.e3 Ne7 8.c4 0-0 9.Ne2 d5 (9...d6 10.d4 Bb6 11.Nd2=) 10.cd5 (10.d4 ed4 11.Nd4 Bd4 12.Bd4 Be6+=) 10...Nd5=+ 11.Nf4?? (better 11.d4 Bb4 12.Nd2=) 11...Be6 (11...ef4 12.Bc4 Kh8 13.Qf3 fe3 14.Bd5 ef2 15.Kd1-+) 12.d4 (better 12.Ne6 Qe7 13.Nf8 Kf8 14.Qf3+-) 12...Nb4 (better 12...Bb4 13.Nd2 ef4-+) 13.Nd5 (13.Nd5 Qd5 14.Nc3-+; better 13.Ne6 Qd5 14.Nc5+-) 1-0. RichardSommer (2110) - iliyanM05 (2085), lichess.org, 2020.

7.e3 Ne7 8.Bc4 d5+= 9.Bb3 c6 10.c4 0-0 (10...Be6!? 11.Qh5 Bf7+=) 11.cd5 cd5 (worse is 11...Nd5 12.e4 Qb6 13.Qf3+/–) 12.Nf3 Kh8 (12...Qa5 13.Nc3=) 13.0-0 Bg4 14.h3 Bh5 15.d3 (15.d4 Bd6 16.de5 fe5 17.Bd5 Nd5 18.Qd5 Bf3 19.gf3 Qf6+/–) 15...Nd7 16.Qc2 (16.Nc3!? d4 17.ed4 Bd4 18.g4 Bc3 19.Bc3=) 16...Bf3–/+ 17.gf3 Bb6 18.Kh1 (18.Bc3!?+=) 18...Nc5–/+ 19.Nd2 (19.d4!? Nb3 20.Qb3–/+) 19...Qd7–+ 20.Kh2 Qb5 21.Rb1 Qd3 (better is 21...Qa6!?–+) 22.Qd3–/+ Nd3 23.Ba4? (better is 23.Bc2 Bc7 24.Rb7–/+) 23...Nc8–+ 24.Bd7 Ba5 25.Nb3 b6 (25...Bc7 26.Bf5–+) 26.Bb5? (better is 26.Na5!? ba5 27.Rb8+=) 26...Nc5 (26...Nb4 27.Bc3 Na7 28.Bd7–+) 27.Na5 ba5 28.Rc1 (28.Bc3 Nd6 29.Bc6 a4–+) 28...Nb3 29.Rb1 Nd2 30.Rb2 (30.Rd1 Nf3 31.Kg3 Ng5 32.Rd5 Nb6–+) 30...Nf3 31.Kg3 e4 (31...Ne1 32.f4 Nd6 33.Kf2–+) 32.Bc6? (better is 32.Ra2–+) 32...Ne7 33.Bd7 Rd8 34.Be6 g5?? (better is 34...h6–+) 35.Rb7+/– Ng6?? (better is 35...Ne5 36.Re7 h5+/–) 36.Bf6 1–0. GuestJVTB – greeenblllue, freechess.org, 2017.

7.e3 Ne7 8.d4 ed4?? (better is 8...Bb4 9.c3 Ba5+=) 9.Qh5+– (9.Qh5 Kf8 10.Qc5 de3 11.Qa7+–) 1–0. pcmvr – justforfun (2660), net–chess.com, 2016.

7.Nc3 d5=.

7.c4 b6 8.e4 c5 (8...cb5 9.cb5 d5 10.ed5 Qd5 11.Nc3=) 9.Nc3+= Ne7 10.Be2 g6 11.Nf3 d6 12.0-0 Bg7 13.Bb2 0-0 14.Qc2 Be6 15.Ra1 Qc7 16.Ra8 Qb7 17.Qa4 Nc8 18.Qa1 Ne7?? (better 18...Rf7 19.Ra4 h6+=) 19.Ra7+- (19.Ra7 Qc8 20.Re7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.c4 d5 8.e3 Bd6 9.Nf3 Ne7 10.Be2 0-0 11.0-0 Kh8 12.Qb3 (12.d4 e4 13.Nfd2 b6=) 12...Be6 13.Qb2 (13.d4 dc4 14.Bc4 Bc4 15.Qc4 e4=) 13...e4 (13...dc4!? 14.bc6 Nbc6-/+) 14.Nd4= Bd7 15.cd5 cd5 16.Nc3 Be8?? (16...Qe8 17.Qc2+=) 17.Rc1?? (better 17.Ne6!? Qc8 18.Nf8 Bf7 19.Nh7 Kh7+-) 17...Nd7? (17...Qd7 18.Na4+=) 18.Nb3?? (better 18.Ne6 Qb8 19.Nf8 Bh2 20.Kh1 Nf8 21.g3 Bg3 22.fg3 Qg3 23.Qb4 Qh3 24.Kg1 Qg3 25.Kh1 Qh3 26.Kg1 Qg3 27.Kh1=) 18...Ne5 19.Qa2 Bd7 20.Nd4 Nf5? (20...Qa8 21.Qc2=) 21.Nd5?? (21.Qd5 Nd4 22.Qd4+- (22.Qd6?! Ne2 23.Ne2 Bb5 24.Qd8 Rd8=; 22.ed4?! Nf7+-)) 21...Qe8 (21...Nd4!? 22.ed4 Nd3 23.Bd3 ed3=) 22.Nf4 Nd4 23.Bd4 (23.ed4 Nf3 24.gf3 Bf4-+) 23...g5 (23...Bb5 24.Qd5 Be2 25.Ne2+/-) 24.Nd5 (better 24.Qd5 Ba3 25.Ra1 gf4 26.Ra3+/-) 24...Qh5?? (better 24...Bb5 25.Bb5 Qb5+=) 25.Bh5+- h6 26.Be5 Be5 27.Nb4 (27.Ne7 Kg7+-) 27...Kh7 28.Qd5 Rd8 29.b6 (29.Qf7 Kh8 30.Bg6 Bh2 31.Kh2 Bb5 32.Qh7) 29...Kg7 30.Qf7 Kh8 31.Nd5 (31.Bg6 Bh2 32.Kh2 Be6 33.Qh7) 31...Be8 (31...Bg4 32.Bg6 Bh2 33.Kh2 Rd5 34.Qf8) 32.Qe8 (32.Qf8 Kh7 33.Rc7 Rd7 34.Ne7 Bh2 35.Kh2 Bf7 36.Qf7 Kh8 37.Ng6) 32...Re8+- 33.Be8 Bd6 34.Bd7 Kg7 35.Bc8 (better 35.Bf5 Kg8+-) 35...Kg6 36.Bb7 (36.g4 Kg7 37.Rc7 Kg8 38.Be6 Kh8 39.Rf7 Bf8 40.Rf8 Kh7 41.Rf7 Kh8 42.Nf6 h5 43.Rh7) 36...f5 37.Bc6 (better 37.Rc6 g4+-) 37...f4 38.b7 Bb8 (38...Bb8 39.Be8 Kh7 40.Rc7 Bc7 41.Nc7 Kg8 42.Ne6 Kh7 43.b8Q fe3 44.Qc7 Kg8 45.Qg7) 0-1. Jimito100 (2000) - MorphyStyle_92 (2135), Rated Bullet game, lichess.org, 2020.

7.c4 d5 8.e3 Nd7 9.Nc3 (9.d4 Nh6=) 9...Nc5 (9...d4 10.ed4 ed4 11.Ne4=) 10.d4 (10.bc6 bc6 11.cd5 cd5+/–) 10...ed4 11.ed4 (worse is 11.Qd4 Nb3 12.Qa7 dc4–+) 11...Qe7 12.Be2 Nd7 (12...Ne4 13.c5+=) 13.cd5 (13.bc6 bc6 14.cd5 cd5+/–) 13...cd5 (13...cb5!? 14.Nb5 Qe4+/–) 14.Nd5+/– Qa3 (14...Qd6 15.Bc4+/–) 15.Nf3+– Qa5 (15...Bb4 16.Nb4 Qb4 17.Nd2+–) 16.Bc3 Qa7 (16...Qa2 17.Nb4 Qa3 18.Qd2+–) 17.0-0 (17.Nc7 Kd8 18.Ne6 Ke8+–) 17...b6 (17...Nb6 18.Nb6 Qb6 19.Re1+–) 18.Bc4 Bd6 19.Re1 Kf7 (19...Kd8+–) 20.Nb6 Kg6 21.Nc8 Bh2 22.Nh2 Qa8 23.Qg4 1–0. Fredek (2090) – Guest441950, Freundschaftspartie, 5m + 0s, 2005.

7.e3 Bb4 8.Bc3 Bc3= 9.Nc3 Ne7 10.Qh5 g6 11.Qe2 d5 12.d4 Qa5 13.Qd2 Qa1 14.Qd1?? Qc3–+ 15.Qd2 Qd2 16.Kd2 0-0 17.Be2 h5 18.c3 e4 19.f3 f5 20.c4 cb5 21.cb5 Bd7 22.Nh3 Nc8 23.Nf4 Ne7?? 24.Rc1?? Rc8–+ 25.Rg1 Kg7 26.h3 Kh6 27.g4 hg4 28.hg4 ef3 29.Bf3 Bb5 30.Rh1 Kg5 31.Ne6? Kf6 32.Nc5 Bc6 33.gf5 Nf5 34.Bg4 b6 35.Bf5 gf5 36.Nb3 Ba4 37.Nc1 Rc2 38.Kd3 Kg5 39.Ne2 Nc6 40.Rb1 b5 41.Nf4 Ne7 42.Ne6 Kg4 43.Rg1 Kf3 44.Ng5= Kf2 45.Rh1?? Kg2–+ 46.Rh7 Nc6 47.Rf7 Nb4 0–1. makaveli1982 – jamesbrain, internet, 2007.

7.e3 c5 8.c4 Bd6 9.Be2 Ne7 10.d3 Qa5 11.Nd2 0-0 12.Ngf3 g5 13.0-0 h5 14.d4 b6? (14...g4 15.Ne1+/–) 15.Qc2?? (better is 15.de5!? Be5 16.Ne5 fe5 17.Be5 d6+–) 15...ed4 16.ed4 g4 17.Nb3 Qa7 18.d5?? (18.Nh4 Qc7 19.Ng6 Bh2 20.Kh1+–) 18...gf3=+ 19.Bf3 h4 20.Qe4 Qa4 21.Nd2 Qa2? 22.Rd1?? Qa4?? 23.Qh4?? Ng6 24.Qe4?? f5= 25.Qd3 Bf4 26.Nf1 Ne5 27.Be5= Be5 28.Be2 d6=+ 29.Qe3 f4 30.Qd3 Bf5 31.Qd2 Qb3 32.Rc1 Bb2 33.Bd1? Qb4 34.Qb4? cb4 35.Bc2 Bc1 0–1. valpa – footyhead, playchess.de, 2003.

7.e3 c5 8.Be5!? d6 9.Bf4 +/–.

7.e3 Bc5 8.Nf3 e4 9.d4 Bb4 10.Nfd2 Bd2 11.Qd2 Ne7 12.Be2 Qb6 13.c4 d6 14.Nc3 Be6 15.0-0 0-0 16.f3 ef3+= 17.Rf3 d5 18.cd5 Nd5 19.Rf1 Nc3 20.Bc3 cb5 21.Bb4 Rf7 22.Rc1 h6 23.Rb1 Nc6 24.Bc5 Qa5 25.Qa5 Na5 26.Rb5 Nc6 27.Ba3 f5?? 28.Bf3?? f4? 29.Bc1 fe3+= 30.Be3 Nd8 31.Rb6 Re7 32.Bd2 Rd7 33.Bc3 Bd5 34.Bg4 Rc7 35.Ba5 Rc4?? 36.Rd6+– Nc6 37.Rd5 Na5 38.Ra5 Rd4 39.Be6 Kf8 40.Ra7 b5 41.Rf7 Ke8 42.Rg7 Rd6 43.Bb3 b4 44.Rb7 Rd4 45.g3 Kf8 46.Rh7 Rd6 47.Rf7 Ke8 48.Rb7 Rd1 49.Kg2 Rb1 50.Rb4 Ke7 51.Re4 Kf6 52.Ba4 Kg5 53.h4 Kf5 54.Rc4 Ra1 55.Bc2 Kf6 56.Rc5 Ra2 57.Kf3 Kg7 58.Be4 Kf6 59.Kf4 1–0. valpa – Handkaes, playchess.de, 2003.

7.e4 c5? 8.Be5!+- fe5 (8...d6 9.Bb2+-) 9.Qh5 Ke7 10.Qe5 Kf7 11.Bc4 Kg6?? (11...d5 12.Bd5 Kg6+-) 12.Ne2 d6 (12...Kh6 13.Ng3 g6 14.Qh8 d5 15.Bd5 Nf6+-) 13.Nf4 Kh6 14.Qh5 1-0. DEFFM – GuestHKHV, freechess.org, 2021.

7.e4 Bc5 8.d4+= White gets strong initiative 8...ed4 (8...Bd4 9.Bd4 ed4 10.Qd4+=) 9.Qh5 g6 10.Qc5 Qa5 11.Bc3 dc3 12.Qc3 Qb6 (12...b6 13.Kd1+=) 13.Nf3 d6 14.Be2 Bg4 15.0-0 Nd7 16.Rd1 Bf3 (16...cb5 17.Na3 b4 18.Qc8 Qd8 19.Qd8 Kd8 20.Nb5+=) 17.Qf3 (17.Bf3?! Qb5 18.Qa3 Ne5+=) 17...Ne5 (17...Qc7 18.Qd3+-) 18.Qb3 (18.Qa3 Nf7+-) 18...Kd7? (better 18...Ke7+-) 19.bc6+- (19.bc6 Kc7 20.Qa3 Qc6 21.Nc3+-) 1-0. onur604 (2320) - Nazar1005 (2005), lichess.org, 2020.

7.e4 d5 8.d4 Qa5 (8...de4 9.de5 Qd1 10.Kd1=) 9.Bc3 Bb4 10.Bb4 Qb4 11.c3 Qa5 (11...Qd6 12.bc6 bc6 13.Be2=) 12.de5 de4 13.Bc4 cb5 (13...Ne7 14.ef6 gf6 15.Ne2 cb5 16.Bd5+=) 14.Qd5 (better 14.Bg8 Rg8 15.Qd5+=) 14...Nh6?? (better 14...Qc7 15.Bb5 Nc6 16.Qe4 Qe5 (worse 16...fe5 17.Nf3+-) 17.Qe5 fe5+=) 15.ef6+- gf6 (15...Qc7 16.Bb5 Nc6 17.fg7 Qg7 18.Bc6 bc6 19.Qc6 Kf7 20.Qd5 (20.Qe4?? Re8 21.Qe8 Ke8-+) 20...Be6 21.Qe4+-) 16.Qh5 Kd8 17.Qh6 Nd7 18.Bb3 b4 19.Ne2 bc3 20.Nbc3 b5 (20...Qe5+-) 21.0-0 Bb7 (21...e3 22.fe3 Re8 23.Bf7+-) 22.Rd1 (22.Rd1 Kc8 23.Rd7 Kd7 24.Qg7 Kd6 25.Qh8+-) 1-0. onur604 (2320) - Nazar1005 (2085), lichess.org, 2020.

8.Bc3 Qa2 9.e3 Ne7 10.Ne2 Qc4=+ Black fights for the Initiative 11.Nf4 (11.d4 Qe6=+) 11...Qf7-/+ 12.Nh3 (12.Nh5 Nf5-/+) 12...Nd5 (12...d5 13.d4 Bh3 14.gh3-/+) 13.Be2 Nc3 14.Nc3 d5 15.0-0 (15.Bh5 g6 16.Bg4 f5-/+) 15...Bh3-+ 16.gh3 cb5 (16...Bd6!? 17.d4-+) 17.Nb5 (17.Bb5 Kd8 18.Qb3 Bd6=) 17...Qd7 (better 17...Nc6-/+) 18.Bg4?? (18.Qb3!?-/+) 18...f5 (better 18...Qb5 19.f4 e4-+) 19.Be2-/+ h5 (19...Nc6 20.d4 ed4 21.Nd4-/+) 20.Kh1 (20.d4 e4=+) 20...f4 (20...e4!?-/+) 21.ef4=+ Qh3 (21...e4!?=+) 22.Nc7 (22.fe5 Nc6 23.d4+-) 22...Kf7 (22...Kd8!? 23.Nd5 Nc6=) 23.Nd5 (better 23.fe5 Nc6 24.f4+-) 23...ef4? (better 23...Bd6 24.fe5 Be5+-) 24.Nf4 Qf5 25.Qb3 (better 25.Bh5 Rh5 26.Nh5 Qd5 27.Kg1+-) 25...Kf6?? (25...Ke7 26.Qg3 g5 27.Qe3 Kd8 28.Qb6 Kc8 29.Rc1 Nc6+-) 26.Qb6 (better 26.Qc3 Ke7 27.Qc7 Kf6 28.Rg1+-) 26...Nc6+= 27.Nd3?? (better 27.Qb2 Kg5 28.Qb7 Kf4 29.Qc6 Qe4 30.Qe4 Ke4 31.Ra1+-) 27...Qe4-+ 28.Kg1 Qe2 29.Qb2 Ke7?? (better 29...Kg5 30.f4 Kh4-+) 30.Re1+- Qe1 31.Ne1 Kd7? (better 31...Nd8+-) 32.Qb7 Kd6 33.Nf3 Be7 (33...h4 34.Qf7+-) 34.Qb6 (better 34.Ng5! Bg5 35.Qg7 Re8 36.Qg5 Re5 37.Qf6 Kd7+-) 34...Rb8 35.Qe3 h4 (35...Rb4+-) 36.Qf4 Kc5 (36...Kd7 37.Qg4 Kd6 38.Qg7+-) 37.Qf5 (better 37.d4 Kb6 38.d5 Rf8+-) 37...Kb6 38.Qe6 (better 38.Ne5 Ne5 39.Qe5+-) 38...h3 (38...Bf6 39.d4 Kb5 40.Qd5 Kb6 41.Qc5 Kb7 42.d5+-) 39.Kf1 (better 39.Ne5 Rb7 40.Qc6 Ka7 41.Qa4 Kb8 42.Qe8 Ka7 43.Nc6 Ka6 44.Qa8 Kb6+-) 39...g5 (39...Bf6+-) 40.Nd4 (better 40.Ne5 Rc8 41.Qc8 Ne5 42.Qb8 Kc6 43.Qe5 Kd7+-) 40...Rc8 41.Qc8 (41.Nc6 Rc6 42.Qe7 Rc5+-) 41...Nd4 42.Qh3 (better 42.Qb8 Kc6 43.Qe5+-) 42...Nb3 (42...Nc6+-) 43.Qb3 Kc5 (43...Kc7+-) 44.Qa3 Kd4 45.Qe7 Kd3 46.Qg5 Ke4 47.h4 Kf3 48.h5 (48.Qf5) 48...Ke4 49.h6 Kf3 (49...Kd3 50.Qd5 Kc2 51.h7 Kd1 52.Qb3 Kd2 53.h8Q Kc1 54.Qhc3) 50.h7 (50.Qf5) 50...Ke4 51.h8Q Kf3 (51...Kd3 52.Qc3 Ke4 53.Qge5) 52.Qh3 (52.Qf5) 52...Ke4 53.Qgg4 (53.Qhe3) 53...Ke5 (53...Kd5 54.Qd7 Kc5 55.Qe3 Kc4 56.Qc3) 54.Qhh5 (54.Qe6 Kd4 55.Qhe3) 54...Kf6 (54...Kd6 55.Qgg6 Kd7 56.Qhh7 Kd8 57.Qgg8) 55.Qgg6 Ke7 56.Qhh7 Kd8 ½-½. aravind555 - BobbyFischer2019 (1625), lichess.org, 2019.

8.Nc3 Bb4 9.Nf3=.

8.Nc3 cb5 9.cb5 b6 (9...Bc5 10.e3=) 10.e3 (10.e4 Bb7=) 10...Nh6 (10...Ne7 11.Nf3=) 11.Nf3 (11.Nd5 Bb4 12.Nb4 Qb4=) 11...Nf5 (11...Bb4 12.e4=) 12.Be2 (12.Nd5 Bb7 13.Bc3 Qa7+=) 12...Bb7= 13.0-0 Bd6 (13...d5 14.d4 e4 15.Nd2+=) 14.Qb3 (14.e4 Ne7+/–) 14...Ne7 (14...e4 15.Nd4 Nd4 16.ed4+=) 15.Bb2 (15.d4 ed4 16.Nd4 Qa3+/–) 15...Qb4+= 16.Qa2 (better is 16.Qc2+=) 16...Bd5?? (better is 16...e4 17.Nd4 Qc5+=) 17.Nd5+– Nd5 18.Rc1 (better is 18.Qd5 Bc7 19.Ne5 Qb2 20.Bh5 Ke7 21.Qf7 Kd8 22.Qg7+–) 18...Nc7 19.Bc3 (19.Be5 fe5 20.Ng5 Rf8 21.Nh7 Rh8+=) 19...Qa3 (19...Qc5 20.d4 ed4 21.Bb2+–) 20.Qc2 Nd5? (20...Ne6 21.d4 ed4 22.Bb2+– (22.Bd4?! Nd4 23.Nd4 0-0+/–)) 21.Ra1 (better is 21.Bb2 Qb4 22.Qc8 Kf7 23.Qh8 Qb2 24.Rc8 Qb1 25.Bf1+–) 21...Qc5+/– 22.Qb3 (22.Ra4 Nc3 23.dc3 Bc7+–) 22...Nc3 23.dc3 Ke7 (23...e4 24.Nd4+/–) 24.Nh4 (24.Qc2!?+/–) 24...e4 25.Rd1 Rc8 (25...g6 26.Rd5 Qc7 27.g3+=) 26.c4 (26.Rd5!? Qa3 27.Qb1+–) 26...Qe5 (26...Kf8 27.h3+=) 27.g3 (27.f4 Qe6 28.Rd5 Bc5+/–) 27...Bc5 28.Rd5 Qa1 29.Kg2 Qe1? (29...g6 30.Bg4+=) 30.Nf5 (30.Qc2 Kf8 31.Rd1 Qb4 32.Qe4 g6+–) 30...Ke6? (30...Kf8 31.Qc2 Re8 32.Bg4+/–) 31.Bf1 (31.Qc2 Kf7+–) 31...d6?? (better is 31...g6 32.Nd6 Bd6+/–) 32.Ng7 (32.Qc2 Kf7 33.Rd1 Qa5 34.Qe4 Qa7 35.Nh6 Kf8 36.Qh7 Qd7 37.Qh8 Ke7 38.Qg7 Ke6+–) 32...Kd7 (32...Kf7 33.Nf5 Nd7+–) 33.Nf5 (better is 33.Qc2 Rg8 34.Rd1 Qd1 35.Qd1 Rg7+–) 33...Kd8 (33...Kd8 34.Nd6 Rc7 35.Ne4 Kc8 36.Nc5 Rc5+–). GuestGNQD – GuestDCHP, freechess.org, 2016.

8.Nc3 Bc5 9.Qa4 (9.Ne4 Bb4 10.c5 Ne7=) 9...Qb6 (9...Qa4 10.Na4 d6 11.Nf3=) 10.e3+= Ne7 11.Ne4 0-0 (11...cb5 12.cb5 d5 13.Nc5 Qc5 14.Bb2+=) 12.Nc5 (12.d4 ed4 13.Nc5 Qc5 14.Bd4 Qf5+=) 12...Qc5 13.d4 ed4 14.Bd4 Qd6? (better is 14...Qf5 15.Qd1 d5+=) 15.c5+– Qc7 16.Bc4 (better is 16.b6!? Qd8 17.Qa7+–) 16...Kh8+/– 17.b6 Qd8 18.Ne2 (better is 18.Qb4!?+–) 18...d5+= 19.cd6 Qd6 20.0-0 Nd7 21.Rb1 (21.Ng3!? c5 22.Ne4 Nb6 23.Bc5 Qc5 24.Nc5 Na4 25.Na4=) 21...c5+= 22.Qa3 Rd8 (22...Nf5 23.Bc3 Nb6 24.Bb5=) 23.h3 (23.Nc3!?+/–) 23...Nf5= 24.Bc3 Nb6 25.Bb3 Qc6 26.Ba5 (26.Rc1 c4 27.Bd4 Be6 28.Bb6 Qb6 29.Bc4 Bc4 30.Rc4 Qe6+=) 26...Nh4+= 27.Nf4? (better is 27.f3 Rd3 28.Bb6 Qb6 29.Nf4=) 27...g5–+ 28.Bd5 (28.Ba4 Na4 29.Bd8 gf4 30.f3–+) 28...Nd5 29.Bd8 Nf4 (29...gf4?! 30.e4 Nb4 31.Qc1–+) 30.Bf6 Qf6 (better is 30...Kg8 31.f3 Nfg2 (31...Qf6?! 32.ef4 Qd4 33.Kh1–/+) 32.Qb3 c4–+) 31.ef4+= gf4 32.Qc5 Qf5?? (32...Bh3 33.Rb7 Nf3 34.Kf1 Qa1 35.Ke2 Qa6 36.Kd1 Qf1 37.Kc2 Bf5 38.Kb2 Qb1 39.Ka3 Qd3 40.Kb4 Qe4 41.Ka3 Qd3 42.Kb4 Qd2 43.Ka3 Qd3=) 33.Qc3?? (better is 33.Qd4 Kg8 34.Qd8 Kf7 35.Rc1 Nf3 36.gf3+–) 33...Kg8= 34.Re1 (34.Rd1 Be6 35.Qc7 Ng6=) 34...Bd7 (34...Be6 35.Qc7 Qd5 36.Qb8 Kg7 37.Qe5 Qe5 38.Re5+=) 35.Qb3= Kf8 36.Qb7 Qf7?? (better is 36...Qb5 37.Qb5 Bb5=) 37.Qb4+– Kg8 38.Re7 Qf8 (38...Qf5 39.Qb2 Nf3 40.Kh1 Qf8 41.Qb3 Kh8 42.Rd7 Ne5+–) 39.Qc4 Kh8 40.Qd4 Kg8 41.Qd7 Ng6 42.Re8 Qe8 43.Qe8 Kg7 44.f3 1–0. Lein,Marina – Vanchikova,Dulma, Seniors Russian Championship Women, 2009.

8.cb5 Qa5 9.Nc3 Bb4 10.e3 Ne7 11.Bc4 Bc3 12.Bc3 Qb6 13.Qb3 (13.e4 d5 14.ed5 Nf5+=) 13...d6 (13...d5 14.Be2=) 14.Bf7 Kf8 15.Nf3 Nd7 (15...Bd7 16.Bc4+=) 16.0-0 Nc5 17.Qa2 (better is 17.Qc4!?+=) 17...Qb5+= 18.Rb1 (18.d4 ed4 19.ed4 Ne4+=) 18...Qa6 19.Qc4 (better is 19.d4 Qa2 20.Ba2+=) 19...b5?? (better is 19...Qc4 20.Bc4 d5–/+) 20.Qe2?? (better is 20.Rb5 e4 21.Nd4+=) 20...Kf7–+ 21.Rb5 (21.d4 Nd5 22.Be1–+) 21...Bd7 22.Qc4 d5 23.Qc5 Qb5 24.Qd6 (24.Qb5 Bb5 25.Ne1–+) 24...Qb1 0–1. GuestPKCH – GuestMVGP, freechess.org, 2017.

8.cb5 Qa5 9.Nc3 Bb4 10.e3 Ne7 11.Be2 0-0 12.Nf3 d5 13.0-0 e4 (13...Be6!?=) 14.Nd4+= Bd7 (better is 14...Nd7!?+=) 15.Qb3 Bc3 16.Bc3 (worse is 16.Qc3 Qc3 17.dc3 Rc8+=) 16...Qb6 17.f3 Nf5?? (better is 17...Kh8+–) 18.fe4 (better is 18.Qd5 Kh8 19.Nf5 ef3 20.Bf3+–) 18...Nd4 19.Bd4 (19.ed4?! Be6+–) 19...Qa5 (19...Qe6+–) 20.Qd5 Kh8 21.Bc3 (21.Qd6 Qd8+–) 21...Qc7 (21...Qb6 22.Bc4 Bc8 23.Bd4+–) 22.e5 fe5 1–0. GuestBJCS – GuestLBFQ, freechess.org, 2017.

8.cb5 Qa5 9.Nc3 Bc5 10.e3=.

8.cb5 Qa5 9.Nc3 Ne7 10.e3 (10.e4 d5 11.ed5 Ng6+=) 10...d6 (10...d5 11.Nf3=) 11.Be2 g6 (11...d5 12.Nf3=) 12.Bc4 (12.Nf3 d5+=) 12...Nd7 13.Nf3 Nc5 (13...Nb6 14.Be2=) 14.0-0+= Be6 (14...Qb4 15.Qe2+/–) 15.Be6+/– Ne6 16.Qb3 Nc5 (16...Nc7 17.d4 Bg7 18.Rb1+/–) 17.Qc4 h5 (better is 17...Qb6!?+/–) 18.d4+– (18.d4 ed4 19.ed4+– (19.Nd4?! Qb6+–)) 1–0. GuestCWVK – vlg, freechess.org, 2017.

8.cb5 b6 9.e3 Qc7 10.Be2 Bb4 (10...d5 11.Nc3 Be6 12.d4=) 11.Bh5 g6 12.Be2 (12.Bf3 d6+=) 12...Ne7 13.Qb3 Bc5 (13...Bb7 14.Nf3 (14.Qb4? Bg2 15.Qc3 Qc3 16.Nc3 Bh1–+) 14...Qc1 15.Qd1 Qd1 16.Kd1=) 14.Bc4 (14.d4 ed4 15.ed4 Bd6=) 14...Rf8 (14...d5 15.Be2+=) 15.Nc3 Qb7 (15...Bb7 16.Nf3=) 16.Nf3 d6 (better is 16...Qa8!? 17.0-0 Bb7+=) 17.d4+– ed4 18.ed4 d5 (18...Bd4!? 19.Nd4 Qg2 20.Rf1+/–) 19.Nd5 Nd5 (19...Bd6 20.0-0+–) 20.Bd5 (better is 20.dc5 Ne7 21.c6+–) 20...Qe7 21.Qe3 Bb4 22.Nd2 (22.Ke2 Kd8 23.Qe7 Be7+–) 22...Bd2 (better is 22...Qe3!? 23.fe3 Bd7+/–) 23.Kd2+– Bf5 (23...Qe3 24.fe3 f5 25.Bc3+–) 24.Qe7 (24.Bc3 Qe3 25.fe3 Kd8+–) 24...Ke7 25.Re1 Kd8 26.Re6?? (better is 26.Be6+–) 26...Be6= 27.Be6 Re8 28.d5 Nd7 29.Bd4 Nc5 30.Bf6 Kc7 31.Be5 Kb7 32.f4 Ne6 33.d6?? (better is 33.de6 Re6 34.h4+=) 33...Rd8 (33...Rc8 34.Ke3–+) 34.Kc3 Nc5 (34...Rc8 35.Kb4–+) 35.Kc4 Ne4 (better is 35...Ra8!? 36.g4–+) 36.Kd5 Nc3?? (better is 36...Nf2–+) 37.Bc3+– Rd7 (37...Rc8 38.Be5 Rd8 39.g4+–) 38.Ke6 Kc8 39.Bd4 h5 (39...Rd8 40.Bf6 (40.Bb6?! Re8 41.Kd5 Kd7+–) 40...Rd7 41.g4+–) 40.Bb6 1–0. GuestJCSP – GuestWGYL, freechess.org, 2017.

8.cb5 d5 9.e3 d4 (better is 9...Bd6!?+=) 10.ed4+= ed4 11.Qh5 (11.Qc2 Bb4+/–) 11...g6 12.Qe2 Ne7 13.Nf3 Attacks the isolani on d4 (13.Qc4+=) 13...Nd7 (better is 13...Bf5!? 14.Bd4 Bb1 15.Bf6 Rg8+=) 14.Bd4+/– Ne5? (better is 14...Bg7!?+/–) 15.Be5+– fe5 16.Qe5 Bg4?? (16...Qd5 17.Qh8 Qe4 18.Be2 Qb1 19.Bd1 Qe4 20.Be2 Qb1 21.Bd1 Qe4 22.Be2 Qb1+–) 17.Be2 (better is 17.Qh8 Bf3 18.gf3 Qc7+–) 17...Bh6?? (17...Rg8+–) 18.Qh8 Kd7 (18...Bf8 19.Nc3 h6 20.Ne5 Be2 21.Qf6+–) 19.Qd4 (better is 19.Ne5 Kc8 20.Bg4 Nf5 21.Bf5 gf5 22.Qd8 Kd8 23.Nf7 Ke7 24.Nh6 Kf6+–) 19...Ke8 20.Qg4 Nd5 21.Qe4 (21.Qe6 Ne7+–) 21...Ne7 22.0-0 1–0. DEFFM – Icanreadyourmind, freechess.org, 2016.

8.c4 Be6 9.Qa4 dc4 (9...Nd7 10.bc6 Nb6 11.Qc2 bc6 12.c5=) 10.bc6 Nc6 11.Bc4 Bc4 12.Qc4 Bb4 (12...Qb6 13.Nc3=) 13.Ne2 Nge7 14.Nbc3 Rf8 (14...Bc3 15.Nc3 Qd7 16.0-0=) 15.Qa2 (15.0-0 Qd2 16.Rd1 Qc2=) 15...Qa5 (15...Bc3 16.Nc3 Qd3 17.Qb3+=) 16.Qa5 (16.Qb1 h6=) 16...Na5 17.0-0 Kf7 18.d4 (18.Rb1 Nac6=) 18...ed4 19.Nd4 Rc8 20.Ncb5 Kg8 (20...Nc4 21.Rc1=) 21.g3 (21.Rb1 Nac6=) 21...Nac6 22.Rb1 Nd4 23.Bd4 Bc5 (better is 23...Rc4!?=) 24.Bc5+/– Rc5 25.Nd6 Nc8 (25...Rd5 26.Rb7 Rd6 27.Re7+/–) 26.Nc8 Rc8 27.Rb7 (27.Rb7 Rc5 28.Kg2+/–) 1–0. Krafzik,Joachim (1840) – Scheuerlein,Gerhard (1680), 18sen.Bay.EM2006 Schney op, 2006.

8.c4 Be6 9.cd5 Bd5 10.Nc3 Be6 11.Nf3 Ne7 (11...Bb4 12.Qc2=) 12.Be2 (12.d4 ed4 13.Nd4 Bf7+=) 12...Nd5 13.0-0 Be7 (13...Bb4 14.Qc2=) 14.Qa4 (14.d4 Nc3 15.Bc3 e4+=) 14...Nc3 15.Bc3 0-0 16.d4 e4 17.Nd2 Bd5 (17...f5 18.Rb1+=) 18.Bc4 f5 19.g3 (19.Rb1 Kh8+=) 19...Kh8 (19...Rf7 20.Rb1=) 20.Be2 (20.bc6 bc6 21.Rb1 Bc4 22.Nc4 Qd5+=) 20...Nd7 21.Ra1 Nf6 (21...Nb6 22.Qa7 Nc8 23.Qb7=) 22.Nc4 Bc4 (22...cb5 23.Qb5 Qc7 24.Ba5=) 23.Bc4 (23.Qc4 cb5 24.Qb5 Qd5+/–) 23...Nd5= 24.Bd2 (24.Qb3 Nc3 25.Qc3 c5=) 24...Nb6 (24...Qd6 25.Qa7 cb5 26.Bb5+=) 25.Qb3 (25.Ba5 c5 26.Bb6 Qb6+=) 25...Nc4 26.Qc4 Qd5 (26...c5 27.Bc3 b6 28.dc5 Bc5 29.Ra7+/–) 27.Qd5+= cd5 28.Ra7 Rb8 29.Ba5 Bd6 30.Bb6 Kg8 31.Kf1 (31.Bc5 Bf8+=) 31...Kf7= 32.Ke2 Ke6 33.Bc5 Kd7 34.Kd2 Kc7 (34...Bc7 35.h4=) 35.Kc3 (35.h3 Rd8=) 35...g5 36.Kd2 Rd8 37.Ra2 Kd7 (37...f4 38.gf4 gf4 39.Bd6 Rd6 40.Rc2 Kb6 41.ef4 Kb5 42.Rc7=) 38.Bb6 (38.h4 gh4 39.gh4 Bb8=) 38...Rc8 39.Ra7 Rb8 40.f4? (better is 40.h3=) ½–½. Krafzik,Joachim – Ruth,Walter, Bad Wildungen, 2004.

8.c4 Be6 9.cd5 Bd5 10.Nc3 Ne7=.

8.c4 Be6 9.Nf3 dc4–/+ 10.bc6 (10.Qa4 Nd7 11.bc6 Nc5+=) 10...bc6 (10...Nc6!? 11.d4 b5–/+) 11.Qc2 (11.Qc1 Qd5+=) 11...Qa5 12.Bc3 Qb5 13.d4 Bb4 (better is 13...cd3!? 14.Bd3 Bb3+=) 14.de5+= fe5 15.Nbd2 (15.Ng5 Bf7 16.Nf7 Kf7+/–) 15...Nd7 (15...Nf6 16.Bb4 Qb4 17.Bc4 Bc4 18.Qc4 Qc4 19.Nc4+=) 16.Bb4 (16.Ng5 Bc3 17.Qc3 Qd5+/–) 16...Qb4 17.Bc4 Bc4 18.Qc4 Qc4 19.Nc4 e4 20.Nd4 c5 21.Nc6 (21.Nf5 Kf7 22.Nfd6 Ke6 23.Ne4 Ngf6 24.Nf6 gf6+/–) 21...Ngf6 (21...h5 22.Nd6 Kf8 23.Ne4+=) 22.Nd6 Kf8 23.Ke2 g6 (23...h5 24.Ra1 g5 25.Ra8 Kg7 26.Ra7+/–) 24.Ra1 Kg7 (24...h6 25.Ra8 Kg7 26.Ra7+–) 25.Ra7+– Kh6? (better is 25...g5+–) 26.Nf7 Kg7 27.Nfe5 (worse is 27.Nh8 Kh8 28.Rc7 Nb6+–) 27...Rc8 28.Nd7 Nd7 29.Rd7 Kh6 (29...Kf6 30.Rd6 Kg7 31.f3+–) 30.Ne5 c4 (30...Kg5 31.Rh7 Rb8 32.f4 ef3 33.Kf3+–) 31.Nf7 Kh5 32.Nd6 Rc6 (32...Rh8 33.Nc4 Re8 34.Rh7 Kg5 35.Rd7+–) 33.Rh7 Kg5 34.Ne4 Kf5 35.Re7 c3 (35...g5 36.Rg7 Ke6 37.Rg6 Kd7 38.Rc6 Kc6 39.Ng5+–) 36.f4 c2 (36...g5 37.Re5 Kg6 38.Rg5 Kf7 39.Rf5 Ke8+–) 37.Re5 Kg4 38.Nf2 Kh4 39.g3 1–0. wiking – solo, queenalice.com, 2009.

8.c4 Bf5 9.Nf3=.

8.d4 Nd7 9.c4=.

8.d4 e4=.

7.c4 dc4 8.e3 Be6-/+ 9.Nc3 (9.Qc2 Qd5 10.Qa4=+) 9...Qd7 (better 9...Nd7!?-/+) 10.Qa4= Bd6 11.Bc4 Bc4 12.Qc4 Ne7 13.Nf3 Ng6 14.0-0 c6 15.Rd1 cb5 (15...Qf7 16.Ne4 Be7 17.Qc2+=) 16.Nb5+/- Nc6 17.Bc3 (17.d4 ed4 18.Nfd4 Bb8+=) 17...Bb8+= 18.Bb2 Qf7 19.Qc5 (19.Qc2 0-0+=) 19...Qe7 (19...Qb3 20.Rb1=) 20.Qc4 (20.d4 Qc5 21.dc5 Nf8+=) 20...h5 (better 20...Qb4!? 21.Qb4 Nb4=) 21.Ba3 Qf7 (21...Qd7 22.d4+/-) 22.Qc5 (22.Qc2 Nge7+/-) 22...h4 23.h3 Nge7 24.Qb6 (24.Qc2+/-) 24...Qd5?? (better 24...Nd5 25.Qc5 Nde7=) 25.Qb7+- 0-0 (25...Qd7 26.Qa8 Kf7 27.Qa4+-) 26.Be7 (26.e4 Qe6+-) 26...Ne7 27.Nc3?? (better 27.Qe7 Qb5 28.Qe6 Kh8 29.Nh4+-) 27...Qb7-+ 28.Rb1 Qc7 29.Nh4 e4! 30.g3 (30.Ne4 Qc2 Double attack (30...Qc2 Decoy)) 30...Qg3 (better 30...f5-+) 31.fg3=+ Bg3 32.Ng2 Bf2?? (better 32...f5=+) 33.Kf1?? (33.Kf2 f5+-) 33...Nd5? (better 33...Bg3 34.Rb7 Nf5 35.Ne4 Re8 36.Ng3 Ng3 37.Kf2 Ne4 38.Ke2 Rd8+/-) 34.Kf2 Ne3 (34...Nc3 35.dc3 Rc8+-) 35.Ke2 (35.Ke3 f5+-) 35...f5?? (better 35...Ng2 36.Ne4 Nf4 37.Kf3 Nh3=) 36.Ne3 f4 (36...g6 37.Ned5+-) 37.Ng4 f3 (37...Re8 38.Rf1 e3 39.de3 fe3 40.Nd5+-) 38.Kf2 e3 (38...Rf5 39.Ne4 Kf8 40.Rb3+-) 39.de3 Rf7 40.Ne5 Kh7 (40...Rf5 41.Rb8 Kh7 42.Nf3 Rc5+-) 41.Ng6! Kg6 42.Rg1 Kf6 43.Rg3 Ke6 44.Rf3 Rf3 (44...Ra7 45.e4+-) 45.Kf3 Ke5 (45...Kf5 46.e4 Kf6 47.Kf4+-) 46.Ne4 (46.Kg4 Ke6+-) 46...Kf5 47.Ng3 Kf6 (47...Kg5 48.e4+-) 48.h4 Ke5 (48...g6 49.Kg4+-) 49.h5 Kf6 50.Kg4 g6 51.e4 1-0. ClayPigeons (2145) - Hayk177 (2200), Rated Bullet game, lichess.org, 2019.

7.c4 dc4 8.e4 Be6 9.Qc2 Qd6 10.Bc4 Qc5=.

7.c4 d4 8.e3 d3 9.Qb3 e4=+ 10.Nc3 Bf5 (10...f5 11.Nd5 Nd7 12.Nh3=+) 11.c5 (11.g4 Bg6 12.Bg2 Nd7 13.Be4 Nc5 14.Bg6 hg6+=) 11...Bc5 12.Nd5? (better 12.Qc4 Qe7 13.f3=) 12...c6-/+ 13.bc6 bc6 14.Nc3 Ne7 15.Qc4 (better 15.g4 Bg6 16.Bg2=+) 15...Qd6?? (better 15...Qb6-+) 16.Ne4+/- Be4 17.Qe4 Qd5 18.Bd3 Qa2 (18...Nd7 19.Qd5 Nd5 20.Nf3+/-) 19.Bc3+- Nd7 20.Nf3 f5 21.Qh4 Nd5? (21...Qf7 22.0-0 0-0 23.Rc1+-) 22.0-0 (better 22.Bg7!? Rg8 23.Qh5 Kd8+-) 22...Nc3 23.dc3 0-0?? (better 23...g6+-) 24.Bc4 Kh8 25.Ba2 f4 26.ef4 (26.Rd1 Nf6 27.Ne5 h6 28.Qf4 Nd5 29.Ng6 Kg8 30.Nf8 Bb4 31.Rd5 Kh8 32.Rh5 Bf8 33.Qf8 Kh7 34.Bb1 g6 35.Rh6) 26...Nf6 27.Ng5 (27.Ne5!? h6 28.Ng6 Kh7 29.Nf8 Bf8+-) 27...h6 28.Ne6 (better 28.Nf7 Rf7 29.Bf7 Nh7 30.Qd8 Bf8+-) 28...Bf2 29.Rf2 Re8 30.Ng7! Kg7 (30...Kg7 31.Qg3 Decoy) 31.Qg3 (31.Rb2 Re7 32.f5 Kh7 33.Qf6 Re1 34.Kf2 Rf1 35.Kf1 c5 36.Rb7) 31...Kf8 32.h3 Ne4 33.Qe3 (33.Qg6 Ke7 34.Qe4 Kd7 35.Rd2 Kc7 36.Qh7 Kb6 37.Rb2 Kc5 38.Qa7 Kd6 39.Rd2) 33...Nf2+- 34.Qf2 (34.Qa7 Nh3 35.gh3 Re1 36.Kf2 Re7 37.Qb8 Kg7 38.Qg8 Kf6 39.Qf8 Kg6 40.Qe7 Kf5 41.Bb1 Kf4 42.Qf6) 34...Ra8 35.Bc4 (35.Qc5 Ke8 36.Qc6 Kd8 37.Qa8 Kd7 38.Qb7 Kd6 39.Bd5 h5 40.g4 h4 41.g5 Kc5 42.Qc6) 35...Ra3 36.Qc5 Kg7 37.Qa3 (37.Qe7 Kh8 38.Qf8 Kh7 39.Bd3) 37...h5 (37...Kg6 38.Qd6 Kg7 39.Qe7 Kh8 40.Qf8 Kh7 41.Bd3) 38.Qc5 (38.Qe7 Kg6 39.Bd3 Kh6 40.Qf6) 38...Kf6 (38...h4 39.Qe7 Kh6 40.Bd3 Kh5 41.Qg5) 39.Qh5 (39.Qg5) 39...c5 (39...Ke7 40.Qe5 Kd7 41.Be6 Ke7 42.f5 Kf8 43.f6 c5 44.Qb8) 40.Qc5 (40.Qc5 Kg7 41.Qe7 Kh6 42.Bg8 Kg6 43.Qg5; 40.Qf7) 1-0. Jimito100 (2025) - solomson (2110), Rated Bullet game, lichess.org, 2020.

7.c4 d4 8.e3 d3 9.Nc3 f5 (9...Be6 10.Qf3 c6 11.bc6 Nc6 12.Nd5 Bd5 13.Qd5 Qd5 14.cd5=) 10.f3 (10.e4 Be6+=) 10...Bd6 (10...Qh4 11.g3 Qc4 12.e4-/+) 11.Qb1 (better 11.Bd3!? Ne7 12.Na4+=) 11...e4 12.f4 (12.Nd5 Qh4 13.g3 Bg3 14.hg3 Qh1 15.Qb2+-) 12...g5?? (better 12...Nf6-/+) 13.g3?? (better 13.Nd5 gf4 14.ef4+-) 13...gf4+= 14.ef4 h5 (14...Nf6 15.Nd5 Be7=) 15.Nd1?? (better 15.Ne4 Qe7 16.Kf2 Qe4 17.Bg2 Qc4 18.Bh8 Bc5 19.Kf1+-) 15...h4?? (better 15...Nf6=+) 16.Bh8+- Nf6 17.Bf6 (17.Qa1 Nbd7+-) 17...Qf6 18.Ne3 Qh6 (18...Bc5 19.Qc1+-) 19.Nh3 Be6 20.Nf2 (20.Qa1 c5+-) 20...Nd7 21.g4 (better 21.Qa1 Nc5 22.Bh3+-) 21...Bf4 22.Nfd1 (22.Qc1 Nc5 23.Nfd1 fg4+-) 22...fg4 (22...Ne5 23.Qa1 Nf3 24.Kf2 fg4 25.Bd3 ed3 26.Qa8 Kf7 27.Qd8-+) 23.Bg2 (23.b6 Nb6 24.c5 Nd5 25.Qb7 h3 26.Bd3 ed3 27.Nd5 Bd2 28.Kf1 Bd5 29.Qd5 Qf4 30.Nf2 Be3 31.Qe4 Qe4 32.Ne4 Ke7+-) 23...h3 (23...Nf6 24.0-0 h3 25.Be4 Ne4 26.Qd3 Bh2 27.Kh2 Qh4=) 24.Be4+- Qh4 Black plans g3 25.Nf2 (better 25.Kf1 Bh2 26.Qd3+-) 25...g3+= 26.hg3 Bg3 27.Ned1?? (better 27.Qd3 Bf2 28.Kd1+=) 27...Bg4 (27...Qe4! 28.Ne3 Qf3 29.Qd3 Bf2 30.Kf1 Bg3 31.Kg1 Qf2) 28.Qd3+- (28.Bb7?! Nc5 29.Bc6 Ke7+-) 28...Bd1 29.Kd1 (29.Bb7?! Bg4 30.Qe3 Kd8+-) 29...Bf2 30.Bg6 (30.Rh3 Qf6+-) 30...Kd8 (30...Ke7 31.Rh3 Qg4 32.Qe2 Qe2 33.Ke2+-) 31.Qh3 (better 31.Bf5!? Qd4 32.Rh3 Ne5+-) 31...Qh3 32.Rh3 Ke7 33.Rh8 (33.Rh8 Ne5 34.Be4+-; 33.Ke2 Bg1+-) 1-0. BeepBeepImAJeep (2610) - rock_Jonas (1870), lichess.org, 2019.

7.c4 d4 8.e3 d3 9.Qh5 g6 10.Qf3 Be6 11.Qb7 Bc4+=.

7.c4 d4 8.e3 Bf5 9.Nf3 de3 10.fe3=.

7.c4 Bg4 8.Qb3 d4 9.e3 Nd7 (better 9...de3!? 10.Qe3 Nh6=) 10.ed4+= ed4 11.Bd4 Nc5 12.Qc3 (12.Qe3 Ne6 13.Bc3 Bf5+/-) 12...Nh6 13.Qe3 (better 13.Be3+=) 13...Kf7?? (better 13...Ne6 14.Ne2 Kf7=) 14.Bc5+- Bd6 15.Bd6 (15.Be2!? Re8 16.Qd4 Bc5 17.Qc5 Qd3 18.Qd5 Qd5 19.cd5 Ra8+-) 15...Re8 16.Bc7 Qc7 17.Nc3 Re3 18.fe3 Nf5 (18...Be6 19.e4=) 19.Nf3+= Nd6 20.d3 Qa5 21.Kd2 Qa1 (better 21...Bf3 22.gf3 Qb4=) 22.Be2?? (better 22.Nd4+/-) 22...Qb2 (22...Qh1!? 23.h3 Qa1 24.Kc2-+) 23.Ke1 Qc3 (23...Bf3 24.gf3 Qc3 25.Kf2-+) 24.Kf2 Nf5 25.h3 (25.Rd1-+) 25...Bf3 26.gf3 Qd2 27.e4 (27.Rg1-+) 27...Qe3 28.Kf1 Nd4 (better 28...Ng3 29.Kg2 Nh1 30.Kh1 Qe2 31.c5-+) 29.Rh2 Kg6 (better 29...Qc1 30.Kf2 Ne2 31.Ke2 Qc2 32.Ke3 Qh2 33.b6 Qg1 34.Ke2 Qb6 35.h4-+) 30.Rg2 Kh5 31.f4 Kh4 (31...Kh4 32.c5 Qf4 33.Kg1 Qe3 34.Kf1 Kh3 35.Bg4 Kh4-+) 0-1. ClayPigeons (2165) - zyzva (2225), Rated Bullet game, lichess.org, 2020.

7.e3 c5 8.c4 d4 9.d3 b6 (9...Nh6 10.Nf3=+) 10.Nf3 Bb7 11.e4 Nd7 12.g3 Bd6 13.Bg2 (13.Bh3 Nh6=) 13...Ne7 14.Bb2 g5 (14...0-0 15.0-0=) 15.h3 (15.0-0 Kf7+=) 15...h5 (15...0-0 16.0-0=) 16.Bc1 (16.Nbd2 Ng6=) 16...Ng6 17.h4 (17.Nbd2 0-0=) 17...g4=+ 18.Nh2 (18.Nfd2 f5-/+) 18...Qa8 (18...f5 19.Bg5 Be7 20.Be7 Ke7 21.Nd2-/+) 19.0-0 Ne7 (19...f5 20.Nd2=+ (20.ef5? Bg2 21.fg6 Bf1 22.Qf1 e4-+)) 20.f3= f5 21.fg4 fg4 (21...hg4 22.Bg5 fe4 23.Nd2 ed3 24.Bb7 Qb7 25.Qg4+-) 22.Bg5 Rf8 23.Rf8 (23.Nd2 Qa3 24.Ng4 hg4 25.Qg4 Rf1 (25...Qd3?? 26.Qe6+-) 26.Bf1 Nf8 27.Qh5 Neg6+/-) 23...Nf8 24.Qf1 Nh7 25.Be7 (25.Bc1 Qa2 26.Na3 Qb3=+) 25...Ke7-/+ (worse 25...Be7 26.Qf5 Nf6 27.Qe5+/-) 26.Qf5 Nf6 27.Nf1 Qa1 28.Nbd2 (better 28.Nfd2-/+) 28...Qc3 (28...Kf7 29.Kf2-/+) 29.Qg5?? (better 29.Qg6 Bc8 30.Qg7 Ke6 31.Qg6=) 29...Qd3?? (better 29...Kf7 30.Nf3 gf3 31.Bf3 Qd3 32.Bh5 Nh5 33.Qh5 Kg7 34.Qg5 Kf8 35.Qd8 Kf7 36.Qd6 Be4 37.Qc7 Kg8 38.Qb8 Kf7 39.Qc7 Kf8 40.Qb8 Ke7 41.Qe5 Kd7 42.Qg7 Kd6 43.Qf6 Kd7 44.Qg7 Kd6 45.Qf6 Kd7 46.Qg7=) 30.Qg7+- Ke6 31.Qb7 Nd7 32.Qd5 Ke7 33.Kh2 Nf6 34.Qb7 Nd7 35.Qd5 Nf6 36.Qc6 Nd7 37.Qd5 ½-½. Antares_Sco (1985) - TH0R0S (2185), Hourly Blitz Arena, lichess.org, 2021.

7.e3 c5 8.Nf3 e4 9.Ng1 Ne7 10.d3 f5 (10...ed3 11.Bd3 c4 12.Be2 Qa5 13.Nd2 Qb5 14.Bh5 Ng6 15.Ne2=+) 11.Nd2 Qa5 (11...Be6 12.Ne2=) 12.c4 (12.de4 fe4 13.c4 Bf5+=) 12...Be6 13.cd5 Bd5 14.de4 fe4 15.Be2 (15.Ne2 Qb5 16.Nc3 Qd7+/-) 15...Nf5 (15...c4 16.Bh5 Ng6 17.Ne2=) 16.Nh3 Bd6 17.0-0 0-0?? (better 17...Qc7+=) 18.Nc4+- Bh2 19.Kh2 Qc7 (19...Qd8 20.Nf4 Bf7 21.Qc2+-) 20.Kg1 (20.Be5 Qd8+-) 20...Rd8 21.Qc2 Nd7 (21...Re8 22.Rd1 Bf7 23.Bg4+-) 22.Nf4 Bf7 (22...Ne7 23.Rd1 Bf7 24.Qe4+-) 23.Rd1 (23.Qe4 g6+-) 23...Re8 24.Nd6! Nd6 25.Qc3?? (better 25.Qd2+-) 25...Nf6=+ 26.Nd5?? (better 26.Qd2 Nc4 27.Bc4 Bc4 28.Bf6 gf6 29.Qc3=) 26...Bd5-+ 27.Rd5 (27.Qd2 Nc4 28.Qc2-+) 27...Re6 (better 27...Nd5 28.Qc1 c4-+) 28.Rc5+= Qd7 Attacking the isolated pawn on b5 (28...Qf7!?+=) 29.Rc7+/- Qd8 (29...Nb5? 30.Rd7 Nc3 31.Bc4 Nd7 32.Be6 Kh8 33.Bd7+-) 30.Bc4 (better 30.Qb3!? Qc7 31.Qe6 Kf8 32.Bf6 gf6 33.Qf6 Kg8 34.Bg4+-) 30...Nc4+= 31.Qc4 (31.Rc4 Qd1 32.Kh2 Ng4 33.Kg3 Qd6 34.f4 ef3 35.Kg4 Rg6 36.Kf3 Qd5 37.Re4 Rf6 38.Qf6 gf6 39.Bf6 Qb5-/+) 31...Qd5?? (better 31...Qd1 32.Qf1 Qd5+=) 32.Rg7!! Kf8 (32...Kg7 33.Bf6 Double attack) 33.Qc8 (33.Qc8 Kg7 34.Bd4-+). Zobbie (2370) - zsolti_83 (2500), Rated Bullet game, lichess.org, 2020. (=1.a3 e5 2.b4 a5 3.Bb2 ab4 4.ab4 Ra1 5.Ba1 f6 6.b5)

7.e3 Bc5 8.c4 d4 9.ed4 Bd4 10.Bd4 Qd4 (10...ed4 11.Bd3 Ne7 12.Ne2=) 11.Nf3 Qe4 (11...Qd8 12.d4 e4 13.Ng1=) 12.Be2 Nh6 (12...Ne7 13.Nc3 Qg6 14.Ne5 Qg2 15.Bh5 Kf8 16.Bf3=) 13.Nc3+= Qg4 (13...Qg6 14.d4+=) 14.0-0+- 0-0 (14...e4!? 15.Nd4 Qf4+-) 15.Ne5!+- Qg5 (15...fe5 16.Bg4 Discovered attack) 16.Nf3 Qg6 17.Nd5 (17.d4 Rd8+-) 17...Bh3?? (better 17...Qf7+-) 18.Ne7 (18.Ne7 Kf7 19.Ng6 hg6 20.gh3+-) 1-0. GuestXYZF – GuestZVKC, freechess.org, 2020.

7.e3 Bc5 8.Nf3 Bg4 9.Be2 Qd6 (9...Bd6 10.0-0=) 10.h4 (10.d4 Bb4 11.c3 Bf3 12.de5 Qe5 13.Bf3 Ne7+=) 10...c6 (10...Ne7 11.d4 Bb4 12.c3=) 11.c4 (11.d4 Bb4 12.c3=) 11...d4 (11...e4 12.Nd4 Be2 13.Qe2 Bd4 14.Bd4 Qb4=) 12.ed4 (12.Nd4 Be2 13.Qe2 Ne7+=) 12...ed4= 13.0-0?? (better is 13.Bd4 Bd4 14.Nd4 Qd4 15.Bg4 Qc4 16.Qe2 Qe2 17.Be2=) 13...d3–+ 14.Nc3 (14.Bd3 Qd3 15.Ne5 Bf2 16.Kf2 Qf5 17.Nf3 Qc5 18.d4 Qc4 19.Nfd2+=) 14...de2 15.Qe2 Ne7 (15...Qe7!? 16.Qd1 Qc7 17.Re1 Ne7 18.Ne4 cb5 19.Bf6–+) 16.Ne4 Bf3?? (better is 16...Qe6 17.Re1 Qf5–+) 17.Nd6+– Bd6 18.Qf3 1–0. GuestDNWV – GuestRWSL, freechess.org, 2017.

7.e3 c6 8.c4 cb5 9.cb5 (9.cd5 Qd5 10.Nc3 Qe6=) 9...b6 (9...Bf5 10.d4 Bb1 11.Qb1 Qa5 12.Kd1 Qa4 13.Ke2 Qc4 14.Kf3 e4 15.Kg3 Bd6 16.f4=+) 10.Ne2 (10.d4 e4=) 10...Bb7 (10...Bd6 11.d4=+) 11.Ng3 g6 12.Be2 Ne7 13.0-0 Nf5 (13...Bg7!?=) 14.Nf5+- gf5 15.Bh5 Ke7 16.Bb2 Ke6 17.Nc3 Nd7 18.d3 Nc5 (18...Qe7+-) 19.Ba3 (better 19.d4 Ne4 20.Ne2+-) 19...Nd3?? (19...d4 20.Bc5 dc3 21.Bf8 Rf8 22.Bf3 Bf3 23.Qf3=) 20.Qd3?? (better 20.Bf8 Nb2 21.Qe2 Qf8 22.Qb2+-) 20...Ba3= 21.Rd1 Be7 22.g3 (better 22.Qd2=) 22...d4?? (better 22...Bb4=+) 23.ed4+- Qd4?? (better 23...e4 24.d5 Kd7+-) 24.Qd4 (better 24.Qb1 Ra8 25.Qb3 Kd7 26.Rd4 ed4 27.Na4+-) 24...ed4+= 25.Rd4 Bc5 26.Rd3 (26.Bf7 Ke7 27.Rd2 Bf3+=) 26...Ra8 27.Rd1 f4 28.Bg4 (28.Re1 Kf5 29.Rc1 fg3 30.hg3 Ke5=+) 28...f5=+ 29.Be2 f3 (29...fg3 30.hg3 Ra3 31.Rc1=+) 30.Bc4= Kf6 31.Nd5 Kg5? (31...Ke5 32.Re1 Kd4 33.Ne3=) 32.Nf4 (better 32.h4!? Kh5 33.Nf6 Kg6 34.Nd7+-) 32...Kf6= 33.h4 (better 33.h3=) 33...Rg8?? (better 33...Ra4 34.Bg8 Be4=) 34.Nd5 (better 34.Bg8 h6 35.Rd7+-) 34...Bd5-/+ 35.Bd5 Rg3 36.Kh2 (better 36.Kf1!? Rh3 37.Kg1-/+) 36...Rg2 37.Kh3 Rf2 (37...Bd6 38.Rh1 Rf2-+) 38.Rd3?? (38.Bc6 Rb2 39.Kg3-+) 38...Ke5 (38...Bd6 39.Rd2 Rd2 40.Bf3 Rh2) 39.Bf3-/+ f4 40.Rd5 Kf6 (40...Ke6 41.Rd3-/+) 41.Rd3 (41.Kg4 Be3=+) 41...Ke5 (41...Bd4 42.Rd4 Rf3 43.Kg4=) 42.Bc6 (42.Rd5 Ke6 43.Rd3 Bd4-/+) 42...f3 (better 42...Bd4!?-/+) 43.Rf3 Rf3 44.Bf3 h6 45.Bc6 Kd4 46.Kg4 Ke5 47.Kh5 Be3 48.Kg6 Kd4 49.h5 Bd2 50.Kf5 Bg5 51.Ke6 Kc5 52.Kd7 Bc1 53.Kc7 Bg5 54.Kd7 Bc1 55.Ke6 Bg5 56.Be8 Bc1 57.Ke5 Bg5 58.Bd7 Bc1 59.Ke6 Bg5 60.Kf7 Bc1 61.Kf6 Bg5 62.Kg6 Bc1 63.Bc6 Bg5 64.Kf5 Bc1 65.Kf6 Bg5 66.Kf5 Bc1 67.Bd7 Bg5 68.Be8 Kd6 69.Bc6 Ke7 (69...Kc5 70.Ke4=) 70.Ke5+= Be3 71.Kd5 Bc5 72.Ke4 Kf6 73.Kf4 Bd6 74.Kg4 Bc5 75.Kf4 Bd6 76.Kg4 Bc5 77.Kf3 Bb4 78.Ke2 Bc5 79.Bf3 Kg5 80.Kd3 Kf4 81.Bc6 (81.Bd5 Bd6=) 81...Kg5 82.Be8 Kf6 83.Ke4 Ke7 84.Bc6 (84.Bg6 Kf6=) 84...Kf6 85.Kf4 (85.Bd7 Kg5=) ½-½. aravind555 (1740) - KOPOBABIPYC (1725), lichess.org, 2020.

7.e3 c6 8.c4 dc4 9.Bc4= Qe7 (9...cb5 10.Bb5 Bd7 11.Bd7 Qd7 12.d4=) 10.Nc3 Be6 11.Qb3 (11.Be6 Qe6 12.Nf3 Bb4=) 11...Bc4 12.Qc4 Qb4 (12...Qa3 13.Na2=) 13.Qb4 Bb4 14.bc6 (14.Nf3 Ne7=) 14...Nc6=+ 15.Nf3 Nge7 16.0-0 0-0 17.Rb1 Rd8 (17...Ra8=+) 18.Na2 (better 18.d4!? ed4 19.Nd4=) 18...Bd2-/+ 19.Rb7 (19.Bc3!? Bc3 20.Nc3-/+) 19...Bb4!-+ Threatening mate: Rd1. Black gets strong initiative 20.Kf1 (20.Rb4 Rd1 Theme: Double Attack) 20...Rd1 21.Ke2 Ra1 22.Nb4 Rb1 23.Nc6 Rb7 24.Nd8? (24.Na5 Rb4-+) 24...Ra7 (better 24...Rb8 25.Ne6 Rc8-+) 25.Ne6 Ra2 26.Ke1 (26.Nd2 Nc6-+) 26...Kf7 27.Nd8 Ke8 28.Nb7 Ra1 (28...Nd5 29.Nc5-+) 29.Ke2 Rb1 30.Nd6 Kd7 31.Nc4 Rb4 32.Ncd2 Ra4 33.Ne1 (33.Kd3 Nd5-+) 33...Ra8 (33...Nd5 34.Nc2-+) 34.Nd3 Ke8 35.Nc5 Kf7 36.Nce4 (36.Nde4 Kg6-+) 36...Ra2 37.Nd6 Ke6 38.N6c4 (38.N6e4 Nd5-+) 38...Ra8 (38...e4 39.f3-+) 39.Kd3 Ra2?? (39...Rd8 40.Kc2-+) 40.Nb6?? (40.Ke2 e4-+) 40...Rd2?? (better 40...Ra3 41.Ke2 Nd5-+) 41.Kd2=+ Nd5 42.Ke2?? (better 42.Na4=) 42…Nb6-+ (42...Nb6 43.e4 g6-+) 0-1. RichardSommer (2150) - mikes_92 (2205), lichess.org, 2020.

7.e3 Bd6 8.c4 Be6 9.cd5 Bd5 10.Nc3 Be6 11.Qa4 Nd7 12.Nf3 Ne7 13.d4 0-0 (13...Nd5 14.Bd3=) 14.Bc4= Bf7 15.0-0 Qe8 16.Rd1 Nb6 17.Bf7 Qf7 18.Qc2 Qc4 19.Nd2 Qe6 20.Nce4 Rc8 21.Nf3 Qc4 22.Qb1 Ng6 23.h3 Ra8 24.de5 Be5 25.Be5 (25.Ne5 fe5 (25...Ne5? 26.Be5 fe5 27.Rc1+–) 26.Ng5 Qe2+/–) 25...Ne5 (25...fe5 26.Neg5 Nf8+/–) 26.Ne5+/– fe5 27.Ng5 (better is 27.Rc1 Qf7 28.Ng5+–) 27...e4?? (better is 27...g6 28.Rc1 Qa4 29.Rc7 Qa1 30.Qa1 Ra1 31.Kh2 Ra7+–) 28.Rd4+– (28.Qe4?! Qe4 29.Ne4 Kf7+/–; 28.Ne4?! Rf8+/–) 28...Qa2 (28...Qe2 29.Qb3 Nc4 30.Rc4 Kh8+–) 29.Qa2 1–0. Novikov,Konstantin Ivan (2225) – Grinkevich,Sergey (2255), Rassadnev mem, 2006.

7.e3 Bd6 8.c4 Ne7 9.cd5 (9.d4 ed4 10.Bd4 c5=) 9...Nd5=+ 10.Nc3 Nc3 (10...Nb4 11.Bc4=+) 11.Bc3 Be6 12.Nf3 0-0 13.Be2 (13.Qc2 c5=) 13...c6 14.0-0 cb5 15.Bb5 Qb6 (15...Bd5 16.Qe2=) 16.Be2 (16.Qb1 Bf7=) 16...Qc6 (16...Bd5 17.Qc2=) 17.Qb1 Nd7 18.Rc1 Qd5 19.d4 e4 (19...Rb8 20.e4 Qa2 21.Qa2 Ba2 22.de5 Ne5 23.Ne5 fe5 24.Rd1=) 20.Nd2+- Qg5?? (better 20...Ba3 21.Bc4 Qc6+-) 21.Ne4+- (21.Qe4?! Bd5 22.h4 Be4 23.hg5 Bg6+-) 21...Qd5 (21...Bh2 22.Kh2 Qh4 23.Kg1+-) 22.Nd6 (22.Bf3 Kh8 23.Nd6 Qd6+-) 22...Qd6 23.Bf3 (23.Bb4 Qb8 24.Bf8 Nf8+-) 23...b6?! (23...Rc8+-) 24.Bb4 Qb8 25.Bf8 Qf8 26.Rc7 Qd8 27.Rd7 (better 27.Ra7 Nf8 28.Rb7+-) 27...g5?? (better 27...Bd7 28.Bd5 Kh8+-) 28.Rd8 (28.Rd8 Kg7 29.Qb4 g4 30.Qe7 Kh6 31.Qf6 Kh5 32.Qe6 gf3 33.Rd5 Kh4 34.g3; 28.Qh7 Kf8 29.Rd8) 1-0. RichardSommer (2065) - poimenas (2115), lichess.org, 2020.

7.e3 Bd7 8.c4 c6 9.Nc3 Qa5 10.Nf3 (better 10.cd5 cb5 11.e4=) 10...d4 (better 10...Ne7!?=) 11.ed4+- ed4 12.Ne4 (12.Nd4 Nh6+-) 12...cb5 (12...c5 13.Bd3 Qa3 14.Qb1+=) 13.cb5 Bb5 14.Nd4 (14.Bb5!? Qb5 15.Nd4+-) 14...Bf1+= 15.Rf1 Nd7 16.Bc3 Qd5 17.Qe2 Be7 18.Nf3 (18.Nf5 Kf8 19.Qg4 g6+=) 18...Nh6 19.Kd1?? (19.Bb4 Nf5 20.Nc3 Qb3 21.Be7 Ne7=) 19...0-0 (19...Qb3 20.Ke1 Qb1 21.Qd1 Qe4 22.Qe2 Qb1 23.Qd1-+) 20.Kc2?? (better 20.Nd4!?=+) 20...Ra8 (better 20...f5 21.Qd3 Qe4 22.Qe4 fe4-+) 21.Rb1 b5?? (21...Qa2 22.Bb2 Qa4 23.Kc1 Kf8=+) 22.Rb5+- Ra2 (22...Qa2 23.Kd1+-) 23.Kb1 Qa8? (23...Qf7 24.Qd3 Ra7 25.Qd5+-) 24.Qc4 (24.Nf6!? Bf6 25.Qe6 Kh8 26.Qa2 Qe8+-) 24...Nf7 (better 24...Kh8 25.Qd5 Qd5 26.Rd5 Ra7+-) 25.Qa2 (25.Qa2 Qe4 26.Kc1+-; 25.Nf6 Nf6 26.Ng5 Nd5 27.Rd5 Ra7+-) 1-0. aravind555 (1755) - Sal_61 (1760), lichess.org, 2020.

7.e3 Bd7 8.c4 Be6 9.cd5 Bd5 10.Nc3 Ne7 11.Nf3 c6 12.Nd5 Nd5 13.Nh4 (better 13.e4 Nf4 14.Qb3=) 13...Be7 (better 13...Bb4!?=) 14.Qh5+- g6? (better 14...Kd7 15.Qg4 Kc7 16.Qg7 Qg8 17.Qg8 Rg8+-) 15.Ng6!+- Threatening mate: Nxe5 15...Kd7 (15...hg6 Exploits the pin 16.Qh8) 16.Nh8 (16.Qf5 Kc7 17.Nh8 Qh8+-) 16...Qh8 17.Bc4 Nb4 (17...Nb6 18.Bd3+-) 18.Qf5 (18.d4 Nc2 19.Ke2 Na1 20.de5 Nc2 21.Qf5 Kc7 22.ef6 Bb4 23.Qc2 Qf6 24.Qh7 Nd7+-) 18...Kc7 (18...Kd8 19.d4 cb5 20.Bb5+-) 19.Qe6 (19.0-0 Qg7+-) 19...Qe8 20.0-0 cb5 (20...Qd7 21.Qf7 Bd8 22.Qh5 cb5 23.Bg8+-) 21.Bb5! Qb5 Theme: Deflection from e7 (21...N8c6 22.f4 ef4 23.Bf6+-) 22.Qe7 Annihilates a defender: e7 22...Kb6 23.Qf6 N8c6 1-0. aravind555 (1605) - NakedPegasus (1610), lichess.org, 2019.

7.e3 Bd7 8.d4 ed4 9.Bd4 Bf5=.

7.e3 Bd7 8.Qh5 g6 9.Qd1 Qe7 (9...Bf5 10.d4 Nd7 11.de5 Ne5 12.b6=) 10.c4 (10.Nc3 Be6=) 10...dc4=+ 11.Bc4 (11.Qa4 Bf5 12.b6 c6–/+) 11...Qb4 12.Qc2 Ne7 (12...Bb5 13.Bb5 Qb5 14.Nf3–/+) 13.Be2 (13.Qd3!?=+) 13...Bb5–/+ 14.Bc3 Qc5 (14...Ba4 15.Qc1 Qe4 16.Nf3–/+) 15.Bb5 Qb5 16.Na3 (16.Nf3 Qd5=+) 16...Qc6 17.Nf3 Nd5 18.Bb2 Qc2 19.Nc2 Bc5 20.0-0 Nc6 21.d4 ed4 22.ed4 Bd6 23.Re1 Kf7 24.Ba3 Ba3 25.Na3 Ra8 26.Nb5? Ra5 27.Rb1 Ke6 28.g3 Kf5 29.Nd2 h5 30.Nc4=+ Ke4 31.Na5= Na5 32.Ra1 b6 33.Re1 Kd3 34.Rd1 Kc4 35.Na3 Kb3= 36.Nb5 Kc2 37.Re1 Kd3 38.Kf1 Nc4 39.Rd1 =. Lazzzzzzzzzzzzy – jakesh, Live Game Caissa's Web, 2004.

7.e3 g6 8.c4 Be6 9.Qb3 Bg7 (9...Ne7 10.d4 Nd7 11.Nf3=) 10.Nf3 (10.Nc3 d4 11.ed4 Qd4=) 10...Ne7 11.d4 e4 (11...Nd7 12.Nc3=) 12.Nfd2 c6 13.c5 White prepares the advance b6 13...Bf7 (13...f5 14.Be2=) 14.b6 (14.Be2 f5+=) 14...0-0 15.Be2 Qd7 (15...f5 16.0-0=) 16.Na3 =. Karacsony,I – Brotz Herzog,F, HUN–ch op Pecs, 1998.

7.e3 Nh6 8.d4 e4 (8...Nf7 9.de5 fe5 10.c4=) 9.c4 c6 10.Qb3 Be6 11.Nd2 Be7 12.Ne2 (12.c5 Bf7=) 12...dc4 13.Nc4 Bc4 14.Qc4 Qa5 15.Bc3 Qb5 16.Qb5 cb5 17.Ng3 f5 (17...b4!? 18.Bb2 f5=) 18.Bb5+/– Kf7 19.h3 (19.Bc4 Kg6 20.Kd2 Nd7+/–) 19...Rc8+= 20.Ne2 g5 21.Kd2 Kg6 22.f3 Nf7 23.fe4 fe4 24.Rb1 Nd6 (24...Bf8!?+=) 25.Bb4+/– Nc6 26.Bd6 Bd6 27.Bc6 bc6 28.Nc3 Re8 29.Rb6 Kf5? (better is 29...Kf7+–) 30.Rc6 Bb4 (30...Re6 31.g4 Kg6+–) 31.g4 1–0. Dzieniszewski,Andrzej – Gorniak, Jelenia Gora Poland, 1976.

7.e4 d4 8.c3 d3 (8...dc3 9.Bc3 Bc5 10.Qh5 g6 11.Qd1=) 9.Qh5 g6 10.Qf3 Nh6 11.Qd3 Qe7 12.Nf3 Bg7 13.Bb2 Be6 14.Ba3 Qd7 15.Qc2 (15.Qd7 Kd7 16.d4 ed4 17.cd4 Re8+-) 15...Kf7 (15...Bg4 16.Qd1+-) 16.Be2 c6 17.d4 ed4 18.Nd4 Bg4?? (better 18...f5+-) 19.Bc4 Ke8 20.0-0 (better 20.h3 c5 21.Nb3 Bh5 22.Nc5 Qc8+-) 20...f5 (20...Qc7 21.bc6 bc6 22.Nd2+-) 21.h3 (21.h3 Bd4 22.cd4+- (22.hg4?! cb5 23.Bb3 Be5+-)) 1-0. onur604 (2320) - Talentschmiede (2040), lichess.org, 2020.

7.e4 d4 8.Bc4= Nh6 9.Nf3 Nd7 10.0-0 Nb6 11.Bb3 c5 (11...Qd6 12.Bb2=) 12.bc6 bc6 13.Qe2 c5 (13...Bc5 14.Qd3=) 14.Na3+= Bd6 15.Nb5 (15.Rb1 Bg4+=) 15...Nf7 16.Nh4 0-0 17.Nf5 Bb8 18.Bb2 Kh8 (18...Bf5 19.ef5 d3 20.cd3+=) 19.Ba3 Bf5 20.ef5 Qc8 21.c3 Nd6 22.Be6 (22.cd4 ed4 23.Rc1 Qa6 24.Bc5 Re8+-) 22...Qc6= 23.Rb1 Nd5 24.g3 Nb5 (better 24...Ne7!?=) 25.Qb5+- (25.Rb5?! Bd6 26.Rb3 Nc7=) 25...Qb5 26.Rb5 Nc7 (26...dc3!? 27.Rc5 Bd6 28.Rd5 Ba3 29.dc3 Ra8+-) 27.Rb7+- Ne6 28.fe6 Bd6?? (better 28...Re8 29.Bc5 dc3 30.dc3 e4+-) 29.Rd7 1-0. onur604 (2320) - foytik (2080), lichess.org, 2020.

7.e4 de4 8.Bc4 c6 9.Nc3 cb5 (9...Bf5 10.Nge2+=) 10.Nb5 (10.Bb5 Bd7 11.Bd7 Nd7 12.Ne4 Nc5=) 10...Bd7 (better is 10...Ne7!?+=) 11.Be5+= Bb5 (11...fe5 12.Qh5 Double attack (12.Qh5 Decoy)) 12.Bb5 Nc6 13.Bb2 Bc5?? (better is 13...Qd5 14.Qe2 Nge7+=) 14.Qh5+– g6 (14...Kf8 15.Qc5 Nge7 16.f3+–) 15.Qc5 1–0. pcmvr (2225) – flaviolucas (2105), net–chess.com, 2006.

7.e4 Be6 8.ed5= Bd5 9.d4 Bb4 10.c3 Bd6 11.Qe2 Qe7 12.c4 Bb4 13.Kd1 Bf7 14.de5 fe5 (14...Be6!?+=) 15.Be5 Nf6 (15...Kf8 16.Nf3+/-) 16.Bc7 Qe2 (16...Nbd7!? 17.Nd2 Be6+/-) 17.Be2+- (17.Ne2?! Ne4 18.Bb6 Bc4+/-; 17.Ke2? Bc4 18.Kf3 Bf1-+) 17...0-0 18.Nf3 Nbd7 19.Ne5 (19.Nfd2 Ra8 20.Bf3 Bd2 21.Kd2 Bc4+-) 19...Rc8 (19...Ne5!? 20.Be5 Ne4+/-) 20.Nf7+- Rc7 21.Ng5 Nf8 22.Kc2 h6 23.Nh3 Ne6 24.Rd1 Bc5 25.Nc3 Nd4 26.Kb2 Ne2 27.Ne2 Bf8 (27...Ng4 28.Nc3+-) 28.Kb3 Ne4 29.Nef4 Nc5 30.Kc3 1-0. onur604 (2320) - T_34_85tank (2225), Casual Rapid game, lichess.org, 2021.

8.Bb2 A) 8...Nd7 A1) 9.Nc3 Nh6 (9...Ne7 10.Nge2 Kf7 11.Ng3 f5 12.Be2 Ng6 13.0-0 Bd6) 10.Nf3 Bb4 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8; A2) 9.Nf3 Bb4 (9...Nh6 10.Be2 Bb4 11.Nc3 0-0 12.0-0 Nf5 13.Qa1 Qa8) 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8; A3) 9.g3 Nh6 (9...Kf7 10.Nc3 Nh6 11.Bh3 Nf5 12.Nf3 Nc5 13.Bf5 Bf5) 10.Nc3 Nf5 11.Bh3 Nb6 12.g4 Nd6 13.g5 Bh3; B) 8...Ne7 B1) 9.Ne2 Nd7 (9...Kf7 10.Ng3 Nd7 11.Nc3 Nb6 12.Bd3 e4 13.Be2 Ng6) 10.Nbc3 Kf7 11.Ng3 Nb6 12.Bd3 e4 13.Be2 Ng6; B2) 9.Nf3 Nd7 (9...Kf7 10.Nc3 Nd7 11.g4 Nb6 12.Rg1 Ng6 13.g5 d4) 10.Be2 Nf5 11.0-0 Kf7 12.Nc3 Bb4 13.Qa1 Qa8; B3) 9.Nc3 Nd7 (9...Nf5 10.Nge2 Bb4 11.Ng3 0-0 12.Nf5 Bf5 13.Be2 Qd6) 10.Nge2 Kf7 11.Ng3 Nb6 12.Bd3 e4 13.Be2 Qd6; C) 8...Bd6 C1) 9.Be2 Ne7 (9...Nd7 10.Nc3 Ne7 11.Nf3 0-0 12.0-0 Qe8 13.Nh4 Qf7) 10.Nc3 0-0 11.Nf3 Nd7 12.0-0 Qe8 13.Nh4 Qf7; C2) 9.g3 Ne7 (9...Nh6 10.Nc3 Nd7 11.Bh3 Nf5 12.Nf3 Ne3 13.de3 Bh3) 10.Bh3 Bd7 11.Nc3 0-0 12.Bd7 Nd7 13.Nf3 Nb6; C3) 9.Nc3 Ne7 (9...Nd7 10.g3 Nh6 11.Bh3 f5 12.Nf3 0-0 13.0-0 Qf6) 10.Nf3 0-0 11.Be2 Nd7 12.0-0 Qe8 13.Nh4 Qf7; D) 8...Nh6 D1) 9.Nf3 Bb4 (9...Nd7 10.Be2 Bb4 11.Nc3 0-0 12.0-0 Nf5 13.Qa1 Qa8) 10.Nc3 Nd7 11.Be2 Nf5 12.0-0 0-0 13.Qa1 Qa8; D2) 9.Be2 Bb4 (9...Nd7 10.Nf3 Bb4 11.Nc3 0-0 12.0-0 Nf5 13.Qa1 Qa8) 10.Nc3 0-0 11.Nf3 Nf5 12.0-0 Nd7 13.Qa1 Qa8; D3) 9.Nc3 Nd7 10.Nf3 Bb4 11.Be2 Nf5 12.0-0 0-0 13.Qa1 Qa8.

8.Nc3 A) 8...Ne7 A1) 9.Bb2 Nd7 (9...Nf5 10.Bd3 Bb4 11.Nge2 0-0 12.0-0 Nd6 13.Qa1 c5) 10.Nf3 Nf5 11.Be2 Bb4 12.0-0 0-0 13.Qa1 Qa8; A2) 9.Nge2 Nd7 (9...Kf7 10.Ng3 Nd7 11.Be2 Ng6 12.0-0 f5 13.d4 ed4) 10.Ng3 Ng6 11.h4 e4 12.d3 ed3 13.Bd3 Nge5; A3) 9.Nf3 Nd7 (9...Kf7 10.Nh4 Nd7 11.Bb2 Nc5 12.d4 Nd7 13.de5 Ne5) 10.Nh4 Kf7 11.Bb2 e4 12.f4 Nc5 13.Ba3 b6; B) 8...Nh6 B1) 9.Nf3 Nd7 (9...Kf7 10.Be2 Nd7 11.0-0 Nf5 12.Re1 Bd6 13.h3 e4) 10.Be2 Bd6 11.Bb2 0-0 12.0-0 Nb6 13.Qa1 Qa8; B2) 9.Nge2 Ba3 (9...Bc5 10.g3 Nd7 11.d4 Bb4 12.Bg2 Nb6 13.e4 0-0) 10.g3 0-0 11.Bg2 Qd6 12.0-0 Nd7 13.d4 e4; B3) 9.Be2 Nd7 (9...Bd6 10.Nf3 0-0 11.Bb2 Nd7 12.0-0 Nb6 13.Qa1 Qa8) 10.Nf3 Bd6 11.0-0 0-0 12.Bb2 Nb6 13.Qa1 Qa8; C) 8...Bd6 9.Qh5 (9.g3 Ne7 10.Bh3 Qd7 11.Bg2 0-0 12.Nge2 Qe8 13.d4 Nd7) 9...g6 10.Qf3 e4 11.Qd1 Ne7 12.Nge2 c5 13.bc6 Nbc6; D) 8...Nd7 D1) 9.Bb2 Bd6 (9...Nh6 10.Qf3 e4 11.Qh5 g6 12.Qd1 Nf5 13.Nh3 Bd6) 10.g3 Ne7 11.Bh3 Nf5 12.Nf3 Nb6 13.e4 de4; D2) 9.g3 Kf7 (9...Bc5 10.Bh3 Qe7 11.Bg2 Qd6 12.Nf3 Ne7 13.0-0 0-0) 10.Nf3 Nh6 11.Bg2 Nf5 12.0-0 Nb6 13.Ne1 Nc4; D3) 9.Be2 Bd6 (9...Ba3 10.Nf3 Ne7 11.Qb1 0-0 12.0-0 Qa8 13.Bb2 Nf5) 10.Bh5 g6 11.Be2 Ne7 12.Nf3 0-0 13.h4 Nf5.

8.d4 Nd7 9.Nd2+= (9.de5 fe5 10.Nf3 Bd6 11.Nc3 Ngf6 12.Ng5 Qe7 13.Be2 0-0) 9...Nh6 (9...Bd6 10.c4 Nh6 11.c5 Be7 12.c6 bc6 13.bc6 Nb8) 10.de5 fe5 11.Ngf3 Bb4 12.c3 Be7 13.c4 Bb4.

8.d4 Nd7 9.de5 fe5 10.Nf3+=.

8.d4 e4 9.Nd2 (9.Ne2 Bd6= (9...Nh6 10.Nd2 Bb4 11.c3 Bd6 12.c4 dc4 13.Nc3 0-0) 10.c4 dc4 11.Nec3 Nd7 12.Nd2 Nb6 13.Nde4 Ne7; 9.Be2 Kf7 (9...Ne7 10.Nc3 Ng6 11.h4 Bd6 12.h5 Ne7 13.h6 gh6) 10.Nh3 Bd6 11.Nc3 Ne7 12.Nf4 Bf4 13.ef4 Qd6; 9.Nh3 Nh6 (9...Bd6 10.c4 dc4 11.Qc2 Nd7 12.Nd2 Nb6 13.Bc4 Nc4) 10.Nf4 Bf7 11.Nd2 Bd6 12.Be2 0-0 13.0-0 Bf4) 9...c6 (9...Bd6 10.c4 Nh6 (10...Bb4 11.Ne2 Ne7 12.Bc3 Bc3 13.Nc3 c6) 11.c5= (11.Qb3 0-0 12.cd5 Bf5 13.f3 ef3) 11...Be7 12.Ne2 0-0 13.Nf4 Bf7; 9...Ne7 10.Ne2 Ng6 11.c4 dc4 12.Nc3 f5 13.d5 Bf7; 9...Nh6 10.Ne2 Bd6 11.c4 0-0 12.cd5 Bd5 13.Nc3 Bb4) 10.Ne2 (10.Nh3 Bd6 11.c4 Nd7 12.c5 Bb8 13.bc6 bc6) 10...Bd6 11.c4 Nd7 (11...dc4 12.Nc3 Bb4 13.Qa4= (13.Bc4 Bc4) 13...Qa5) 12.Nc3 (12.c5 Bb8 13.Qa4 Ne7) 12...Ne7 13.Qb3 (13.c5 Bc7= (13...Bb8=)) 13...Bf7 (13...f5 14.c5 Bb8 15.Be2=; 13...Qa5=) 14.Be2 0-0 15.Bb2 f5 16.Ba3 Nf6 (16...Ba3 17.Qa3 cb5 18.cb5=) 17.Bd6+= Qd6 18.g3 (18.c5 Qd7+=) 18...Ra8 (18...c5 19.Qa3+=) 19.Na4 (19.c5 Qe6=) 19...Nd7 (19...dc4 20.Nc4 cb5 21.Qb5+= (worse is 21.Nd6 Bb3 22.Nc3 Ra1 23.Nd1 b4–+)) 20.0-0 (20.c5 Qc7=) 20...c5+= 21.dc5 Nc5 22.Nc5 Qc5 23.cd5 Bd5 24.Bc4 ½–½. Jethan,Martin (2065) – Dueckstein,Andreas (2250), 15th Open A, Vienna AUT (8), 2006.

8.Be2 A) 8...Bd6 A1) 9.Nf3 Nd7 (9...Ne7 10.Nc3 Nd7 11.0-0 0-0 12.Bb2 Qe8 13.Nh4 Qf7) 10.Nc3 Ne7 11.Bb2 0-0 12.0-0 Qe8 13.Nh4 Qf7; A2) 9.Bb2 Ne7 (9...Nd7 10.Nf3 Ne7 11.Nc3 0-0 12.0-0 Qe8 13.Nh4 Qf7) 10.Nf3 0-0 11.Nc3 Nd7 12.0-0 Qe8 13.Nh4 Qf7; A3) 9.Nc3 Ne7 (9...Nd7 10.Nf3 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.Nh4 Qf7) 10.Nf3 0-0 11.0-0 Nd7 12.Bb2 Qe8 13.Nh4 Qf7; B) 8...Nh6 B1) 9.Nc3 Nd7 (9...Kf7 10.Nf3 Nd7 11.0-0 Nf5 12.d3 Nb6 13.e4 de4) 10.Nf3 Nf5 11.0-0 Kf7 12.d3 Nb6 13.e4 de4; B2) 9.Nf3 Kf7 (9...Nd7 10.Nc3 Kf7 11.0-0 Nf5 12.d3 Nb6 13.e4 de4) 10.c4 dc4 11.Qc2 Bd6 12.Bc4 Qe7 13.Be6 Qe6; C) 8...Kf7 C1) 9.Nc3 Nd7 (9...Nh6 10.Nh3 Nd7 11.0-0 Nf5 12.g4 Nd6 13.f4 Kg8) 10.Nf3 Nh6 11.0-0 Nf5 12.d3 Nb6 13.e4 de4; C2) 9.Nf3 Ne7 (9...Nd7 10.0-0 Ne7 11.Nc3 Nf5 12.d3 Nb6 13.e4 de4) 10.0-0 Nd7 11.Nh4 g5 12.Nf3 Nf5 13.Nc3 Kg7; C3) 9.Nh3 Nh6 (9...Ne7 10.0-0 Nd7 11.Nc3 Nb6 12.f4 e4 13.g4 Bd7) 10.0-0 Bc5 11.d4 ed4 12.ed4 Bd6 13.Qd2 Bh3; D) 8...Nd7 D1) 9.Nf3 Bd6 (9...Ne7 10.Nc3 Nf5 11.0-0 Kf7 12.d3 Nb6 13.Qd2 Bb4) 10.Nc3 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.Nh4 Qf7; D2) 9.Nc3 Bd6 (9...Ba3 10.Nf3 Ne7 11.0-0 0-0 12.Qb1 Qa8 13.Re1 Qa5) 10.Nf3 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.Nh4 Qf7; D3) 9.Nh3 Nh6 (9...Kf7 10.0-0 Bd6 11.Bg4 Bg4 12.Qg4 Ne7 13.f4 h5) 10.Nc3 Bd6 11.Bh5 g6 12.Bf3 c6 13.0-0 0-0.

8.Nf3 c5 9.bc6 bc6 (9...Nc6 10.Nc3+=) 10.Be2 (10.c4 Ne7=) 10...Nh6 (10...Bd6 11.0-0=) 11.c4 Be7 12.cd5 (12.0-0 Nf5=) 12...cd5 13.Qa4 Kf7 14.0-0 Rf8 (14...Nd7 15.Qc2=) 15.Bc3 (15.Nc3 Nd7=) 15...Qb6 (15...Nd7 16.Bb4=) 16.Ba5 (16.Na3 Qc6 17.Bb5 Qc7=) 16...Qb7 (16...Qa7 17.Nc3=) 17.Nc3= Nc6 18.Rb1 Qa8 (18...Qd7 19.Bb5 Rc8 20.e4 de4 21.Ne4=) 19.Rb5 (19.Rb6 Na5 20.Ra6 Qb8 21.Ra5 Rd8=) 19...Rb8 (19...Rc8 20.d4+= (20.Nd5? Bd8–+)) 20.Rb8= Nb8 21.Bb5 Qb7 (21...Nf5 22.d4 Nd6 23.Bb6 (worse is 23.de5 Nb5 24.Qb5 Nc6+=) 23...Qa4 24.Ba4= (24.Na4?? Nb5 25.de5 Nd7–+)) 22.d4+= e4 23.Nd2 Qc8 24.Qb3 (24.Ne2 g5+=) 24...Nc6= 25.Bb6 Qb7 (25...Nb4 26.Ba5 Nc6 27.Bb6=) 26.Qa4+= Qb6 (26...Ne5 27.Be8 Kf8 28.de5 Qb6 29.Bc6+=) 27.Bc6+/– Bd6? (27...Qb4 28.Qa8 Kg6 29.Be8 Nf7 30.Nd5 Qd2 31.Ne7 Kh5 32.Bf7 Bf7 33.g4 Kg5 34.Kg2+–) 28.Qa8 (better is 28.Bd5 Bd5 29.Nd5+–) 28...Qb8+/– 29.Qb8 Bb8 30.Bd5 Bd5 31.Nd5 f5 32.f3 ef3 33.gf3 g5 34.h3 Ke6 35.Nb4 Nf7 36.Nc4 h5 37.e4 White prepares the advance d5 37...fe4 38.fe4 Nd6 39.d5 Kf7 40.Nd6 Bd6 41.Nc6 Kf6 42.Kg2 Bc7 43.Kf3 Bh2 44.Nd4 Be5 45.Nf5 Bb8 46.Ne3 (46.Ng3!? Kg6 47.Ne2+=) 46...Ke5= 47.Nc4 Kd4 48.Ne3 Ke5 49.Ng2 g4 50.hg4 hg4 51.Ke3 Ba7 52.Kd3 Bf2 53.Ne3 Kf4 54.Nd1 Bb6 55.Nc3 Ke5 56.Nd1 g3 ½–½. Lorenc,Tomas (2150) – Pliva,Vojtech (2055), CZE–ChT2B, 2010.

8.Nf3 Bd6 A) 9.Bb2 Nd7 (9...Ne7 10.Nc3 Nd7 11.Be2 0-0 12.0-0 Qe8 13.Nh4 Qf7) 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Qe8 13.h4 Qf7; B) 9.Bd3 Nd7 (9...Ne7 10.Nc3 Nd7 11.0-0 0-0 12.e4 Nc5 13.ed5 Nd5) 10.Nc3 Ne7 11.0-0 Nc5 12.Be2 0-0 13.d4 e4; C) 9.Nc3 Nd7 (9...Ne7 10.Bb2 Nd7 11.Be2 0-0 12.0-0 Qe8 13.Nh4 Qf7) 10.Bb2 Ne7 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qb8.

8.Nf3 Nd7 9.Bb2 Bd6 (9...Bb4 10.Nc3 Ne7 11.Be2 Nc5 12.Qa1 0-0 13.d4 Ne4) 10.Be2 Ne7 11.Nc3 0-0 12.0-0 Qe8 13.Nh4 Qf7.

8.Nf3 Nd7 9.Be2 Bd6 10.0-0 Ne7 11.d3 (11.d4 e4 12.Nfd2 Qa8=) 11...Qa8 (11...0-0 12.Bb2+=) 12.Nbd2 Qa4 13.c4 Qd1 14.Rd1 c6 15.h3 cb5 16.cb5 (16.cd5 Nd5 17.d4 b4=) 16...Kf7 17.Bb2 Ra8 18.Ra1 Ra1 19.Ba1 Nc8 20.d4 (20.Bc3 Ncb6+=) 20...e4 21.Nh2 f5 22.f4 Nf6 (22...Ncb6 23.Kf2+=) 23.g4 g6 (23...Nb6 24.gf5 Bf5 25.Ng4+=) 24.Nb1 (24.g5 Ne8 25.Bb2 Bd7–/+) 24...Bd7 (24...h6 25.gf5 gf5 26.Kf2+=) 25.Nc3 (25.g5 Ne8+=) 25...Nb6 (25...h6 26.g5 hg5 27.fg5=) 26.Kf2 (26.g5 Nh5=) 26...h6 27.gf5 gf5 28.Nf1 Ne8 29.Ng3 (29.Nd2 Bb4=) 29...Nc7 Exerts pressure on the isolated pawn 30.Bb2 (30.Bh5 Ke7+=) 30...Ke6 31.Ba1 Bb4 32.Na2 Be7 33.Nc3 Kf6 (33...Bh4!?–/+) 34.Nh5 (34.Bb2 Bb4+=) 34...Kg6 (34...Kf7 35.Ng3+=) 35.Ng3 Bh4 36.Bb2 Be7 (36...Be6 37.Bh5 Kh7 38.Be2+=) 37.Bh5 (37.Ba1 Nc8 38.Bb2 b6–/+) 37...Kg7 38.Be2 Be6 39.Nh5 (39.Nf1 Kf7+=) 39...Kf7 40.Ng3 Nc8 (40...Nc4!? 41.Ba1 Bb4–/+) 41.Bh5 (41.Na4 b6=) 41...Kf8 (41...Kf6 42.Be2+=) 42.Be2 (42.Bg6 Nd6 43.Ba3 Ncb5 44.Nb5 Nb5 45.Bf5 Ba3 (45...Na3? 46.Be6 b5 47.Bd5+–) 46.Be6 Nc7=) 42...Nb6+= 43.Ba1 Ne8 (43...Nc4 44.Bf1–/+) 44.Bb2 Ng7 45.Ba1 Ke8 46.Bb2 Kd7 47.Ba1 (47.Nf1 Ne8+=) 47...Kc7 48.Bb2 (48.Na2 Bh4+=) 48...Ne8 49.Ke1 Nc8 (49...Nd6 50.Ba3+=) 50.Na4= b6 51.Nc3 Bb4 52.Kd1 Ned6 53.Nb1 (53.Na2 Ba5 54.Bc3 Nc4 55.Bc4 dc4+=) 53...Na7 (53...Nc4 54.Bc4 dc4 55.Ba3+=) 54.Bc3= Ba5 55.Ba5 ba5 56.Nc3 Nac8 57.Kc2 Nb6 58.Kb3 Ndc4 59.Nf1 Bf7 60.Na4 (60.h4!?=) 60...Na4+= 61.Ka4 Kb6 62.Bc4 dc4 63.Nd2 (63.Ng3 c3 64.Ne2 c2–+) 63...c3 64.Nb3 c2 65.Nc1 Bc4 66.Ka3 Kb5 67.Kb2 Kb4 (67...Bd3!? 68.Kc3–+) 68.Kc2 a4 69.Kb2 a3 70.Ka1? (70.Kc2–+) 70...Kc3 71.Na2 Kd2 72.Nb4 Ke3 73.d5 (73.Nc2 Kf2 74.Na3 e3 75.Nc4 e2–+) 73...Kf4 (better is 73...Bd5 74.Nd5 Kd2 75.Ka2–+) 74.d6 Be6 75.Nc6 (75.Nc2–+) 75...e3 76.Nd4 Ke5 (76...Ke5 77.Nc2 f4–+) 0–1. Valente,Hector Manuel (1785) – Malbran,Guillermo (2195), Club Argentino de Ajedrez – Torneo Abie, 2013.

8.Nf3 Nd7 9.g3 Nh6 (9...Kf7 10.Nc3 Nh6 11.Bg2 Nf5 12.0-0 Ba3 13.Re1 Qe8) 10.Nc3 Bd6 11.Bg2 0-0 12.0-0 Nb6 13.d3 Qd7.

8.Nf3 Nd7 9.h3 Bd6 (9...Ne7 10.Be2 Nf5 11.0-0 Bd6 12.Nc3 0-0 13.d3 c6) 10.Nc3 Ne7 11.Bb2 0-0 12.Be2 Nb6 13.0-0 Qd7.

8.Nf3 Ne7 9.Be2 Ng6 10.0-0 Bd6 11.d4 e4 12.Nfd2 0-0 13.c4 c6 14.cd5 (14.c5!? Be7 15.Nc3+=) 14...cd5= 15.f3 (15.Qb3 f5=) 15...f5 16.fe4 fe4 (worse is 16...de4 17.Nc4 Bc4 18.Bc4 Kh8 19.Qh5=) 17.Rf8 Qf8 18.Qf1 (18.Bg4 Qc8 19.Be6 Qe6+=) 18...Qd8 19.Qc1 (19.Bb2 Nd7–/+) 19...Qg5 20.Nf1 Bh3 (better is 20...Nh4!? 21.g3 Nf3 22.Bf3 ef3–/+) 21.g3–/+ h5 22.Qe1 (22.Bc3!?–/+) 22...h4–+ 23.g4?? (better is 23.Nbd2–+) 23...Bg4 24.Bg4 Qg4 25.Kh1 (25.Kf2 Qf3 26.Kg1 h3–+) 25...Nd7 (25...h3 26.Qf2 Nd7 27.Nc3–+) 26.Nbd2 (26.Nc3 h3 27.Qe2 Qg5–+) 26...Nf6 27.Bc3 Nh5 28.Qf2 Ne7 (28...Ng3 A) 29.hg3?? hg3 30.Nh2 Qh5–+ (30...gf2 31.Ng4 Nh4 32.Nf2+/–; worse is 30...gh2 31.Qg2 Qf5 32.Nf1–+); B) 29.Kg1 Ne2 30.Kh1 Nc3 31.Qg2–+) 29.Qg2 Nf6 (29...Qc8 30.Ba5 Nf6 31.Kg1–+) 30.h3 (30.Qg4 Ng4 31.Nb3 Nf5–+) 30...Qg2 (better is 30...Qd7!? 31.Ba5–+) 31.Kg2 Nf5 32.Nb3 (32.Ba5 Kf7–+) 32...b6 33.Bd2 g5 (33...Ne8 34.Nc1 Nc7 35.Na2 Nb5 36.Nh2–+) 34.Nh2 (34.Nc1 Be7–+) 34...Bh2 35.Kh2 Nd6 36.Bb4 Nfe8 37.Nd2 Kf7 38.Nb1 Nb5 39.Nc3 (39.Kg2–+) 39...Nc3 40.Bc3 Nd6 41.Bd2 (41.Kg2 b5 42.Be1 Nc4–+) 41...Nc4 42.Bc1 (42.Be1–+) 42...b5 43.Kg2 b4 44.Kf2 b3 45.Ke2 b2 (45...b2 46.Bb2 Nb2–+) 0–1. Melzig,Ernst – Steffen,Guenter (1845), Wch Seniors, 2002.

8.Nf3 Kf7 A) 9.Nh4 Ne7 (9...Nh6 10.Nc3 Nd7 11.Bb2 Be7 12.g3 Nb6 13.Bd3 e4) 10.Be2 Nd7 11.Nc3 Ng6 12.Bh5 f5 13.Nf3 Bd6; B) 9.Nc3 Nd7 (9...Nh6 10.Bb2 Nd7 11.Nh4 Be7 12.g3 Nb6 13.Bd3 e4) 10.Be2 Ne7 11.Nh4 Ng6 12.Nf3 Bb4 13.0-0 Nb6; C) 9.Bb2 Nd7 (9...Nh6 10.Nc3 Nf5 11.g4 Nd6 12.g5 h6 13.gf6 Qf6) 10.Nc3 Bb4 11.Be2 Ne7 12.0-0 Nf5 13.Qa1 Qa8.

8.Nf3 Nh6 A) 9.Nc3 Nd7 (9...Kf7 10.Be2 Nd7 11.0-0 Nf5 12.Re1 Bd6 13.Bb2 Nb6) 10.Be2 Bd6 11.0-0 0-0 12.Bb2 Nf5 13.Qa1 Nc5; B) 9.c4 dc4 10.Qc2 Qd5 11.Nc3 Qc5 12.d3 Qa3 13.Bb2 Qb3; C) 9.Be2 Nd7 (9...Bd6 10.c4 dc4 11.Qc2 Qe7 12.Bc4 Nd7 13.0-0 0-0) 10.0-0 Bd6 11.Nc3 0-0 12.Bb2 Nf5 13.Qa1 Qb8.

5.c4 ab5+= 6.ab5 Ra1 7.Ba1 cb5 8.cb5 d5 9.e3 Bb4 (9...Bd6 10.d4 e4 11.Bc3+=) 10.Nf3 Ne7 11.Be2 0-0 12.0-0 Bg4 13.Qb3 Ba5 14.Nc3 Kh8 15.h3 (15.Bb2 Bc3 16.Bc3 e4+=) 15...Bh5 16.Bb2 Bf7 (16...Bc3 17.dc3 e4 18.Nd4 Be2 19.Ne2+/–) 17.d4+= e4 18.Nd2 Nd7 (18...Qd7 19.Ba3+=) 19.Rc1 Re8 (better is 19...f5!?+=) 20.Nde4!+– de4 Exploits the pin (20...Bc7 21.Nd2+–) 21.Qf7 Bc3 (21...f5 22.Nd5 Nf6 23.Nf4+–) 22.Rc3 (22.Bc3 b6+–) 22...Nb6 (better is 22...f5+–) 23.Rc7! (23.Rc7 Qc7 24.Qe8 Ng8 25.Qe4+–) 1–0. Franke,R – Rau,J, corr ICCF EU/M/GT/238 (year?).

5.c4 ab5 6.ab5 Ra1 7.Ba1 Qb6 8.Nc3 cb5 9.cb5 d6 10.e3 Ne7 11.Bc4 Bf5 12.Nf3 g5 (12...d5 13.Bd5 Nd5 14.Nd5=) 13.d4+/– h6 14.0-0 Nd7 15.Qa4 Qc7 16.Qb3 Bg6 17.Be6 Nb6 18.Rc1 (18.Bb2 Bg7+/–) 18...Qd8 (18...e4 19.Nd2 d5 20.Bb2+=) 19.de5 fe5 20.Ne4! Bg7 (20...Be4 21.Bf7 Mate attack) 21.Qb4 Be4 22.Qe4 Qb8 23.Qg4 Qa7? (better is 23...d5+/–) 24.Qh5+– Kd8 25.Qf7 Rh7 (25...Qa3 26.Rd1 Rg8 27.Ne5+–) 26.Ne5 (26.Be5 Qa3 27.Ra1 Qc5 28.Bg7 Qb5+–) 26...Qa3 27.Rd1 (better is 27.Nd3! Nd7 28.Bd7 Kd7+–) 27...Be5 28.Qf8 (28.Qh7?! Ba1 29.Qh6 d5+–) 28...Kc7 29.Be5 de5 (29...Nd7 30.Bd7 Kd7 31.Rd6 Qd6 32.Bd6 Kd6 33.Qb8 Ke6 34.Qb7 Kf7 35.Qf3 Kg7+–) 30.Qd8 1–0. Dumontelle,Joe – Sauve,F, Ottawa Open, March, 1979.

5.c4 d5 6.e3 Qb6 7.Nc3 dc4 (7...ab5 8.ab5 Ra1 9.Qa1=) 8.Bc4 ab5 9.ab5 Ra1 10.Qa1 Bb4 11.bc6 Nc6 (11...Qc6?? 12.Bb5+-) 12.Nf3 Nge7 13.0-0 Na5 (13...Bg4 14.Qa8 Nd8 15.Qa4 Ndc6 16.Ra1+=) 14.Bb5 (14.Qa4 Kd8 15.Bb5 Nac6+-) 14...Bd7 (14...Nac6!?=) 15.Bd7+- Kd7 16.Rb1 (16.d4 ed4 17.Rd1 Rd8+-) 16...Qd6 (16...Nac6 17.Qa4 Qc7 18.d4 ed4 19.Nd4+-) 17.Bc1 (17.d4 ed4 18.Qa4 Nac6+-) 17...Ra8 (17...Rc8 18.Qa4 Nec6 19.Na2+-) 18.Qb2 (18.Ne4 Qc6 19.Rb4 Nb3=) 18...Bc5? (better 18...Bc3!? 19.Qc3 Qd5+=) 19.Ne4 (better 19.Qb5 Qc6 20.Qd3 Bd6 21.Qh7+-) 19...Qc7?? (better 19...Qc6 20.Qe5! Be3 21.Nf6 gf6 22.Qe3 Qc2+-) 20.Qb5+- Qc6 21.Nc5 (21.Qc5?! Qe4 22.Qb5 Ke6+=) 21...Kd6 (21...Kc7 22.Qb4 Nd5 23.Qa3+-) 22.Qc6 (22.Qd3!? Qd5 23.Qc3 Qc4 24.Nb7 Ke6+-) 22...Nec6 23.d4 (23.Nb7?! Nb7 24.d4 Nbd8+-) 23...ed4 24.ed4 Nd4 (24...Nd8 25.Bf4 Kc6 26.Rc1+-) 25.Ne4 (better 25.Nb7!? Nb7 26.Nd4 Kd5 27.Rb7 Kd4 28.Rg7 Ra1+-) 25...Kd5 26.Nd4 Ke4 (26...Kd4 27.f3+-) 27.Ne6 Rc8 (27...Kd3 28.Be3+-) 28.Bd2 (28.Ng7!? Kd3+-) 28...Nc4 29.Be1 Na3 30.Rb7 Rc1 Threatening mate... how? 31.Kf1 Nc2 32.f3 (32.Nc5 Kf5 33.Re7 Ne1+-) 32...Kd5? (better 32...Ke5 33.Ng7 Re1 34.Kf2 Rh1+-) 33.Nf4 Kc6 34.Nd3 (better 34.Re7+-) 34...Re1? (better 34...Ne3 35.Ke2 Rc2 36.Ke3 Kb7+-) 35.Ne1 (35.Ne1 Kb7 36.Nc2+-) 1-0. BeepBeepImAJeep (2425) - Fraybentos1 (1890), lichess.org, 2018.

5.c4 d6 6.e3 Ne7 7.Nf3 Ng6 (7...ab5 8.ab5 Ra1 9.Ba1 cb5 10.cb5=) 8.Be2 Be7 9.0-0 0-0 10.Nc3 Kh8 (10...ab5 11.ab5 Ra1 12.Qa1 cb5 13.Nb5+=) 11.h3 f5 12.Qc2 f4 13.Rfd1 (13.d4 fe3 14.fe3 Bf5+=) 13...Nh4= 14.Nh4 Bh4 15.Bf3 fe3 (15...Bh3 16.gh3 fe3 17.Bg2 ef2 18.Kf1+=) 16.de3+= Bh3 17.Ne4 Rf3 18.gf3 Qe8 (18...Qf8!? 19.Qe2 Be7=) 19.Nd6+- Qe7? (19...Qh5 20.Qe4 Nd7 21.ba6 Rf8-+) 20.Be5+- Qg5 (20...Nd7 21.Bf4 Nc5 22.Nf5+-) 21.Bg3 Bg3 (21...Qh5 22.Qe4 Bf6+-) 22.fg3 (better 22.Nf7 Kg8 23.Ng5+-) 22...Qg3= 23.Kh1 Qf3 24.Kh2 Nd7 (24...Qh5 25.Kg1 Qg4 26.Kh2=) 25.Rg1 (better 25.Qe4 Qe4 26.Ne4+-) 25...Ne5? (25...Qh5 26.Kg3 Ne5=+) 26.Qc3?? (26.Rg3 Ng4 27.Kh3 Nf2 28.Kh2 Ng4 29.Rg4 Qg4 30.Nf7 Kg8 31.Nh6 gh6 32.Rg1 Qg1 33.Kg1+-) 26...Ng4-+ 27.Rg4 Qg4?? (27...Bg4 28.Qd2 ab5 29.cb5 cb5-+) 28.Qg7?? (better 28.Nf7 Kg8 29.Nh6 gh6 30.Rg1+-) 28…Kg7 (28...Kg7 29.Rg1 Qg1 30.Kg1 ab5 31.ab5 cb5 32.cb5 b6-+; better 28...Qg7 29.Rg1 Qe5 30.Kh3 Qd6-+) 0-1. RichardSommer (1910) - Gooyo (1960), lichess.org, 2020.

5.d4 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.Bc3 Bb4 9.Bb4 Qb4 10.c3 Qb5=.

5.e3 ab5 6.ab5 Ra1 7.Ba1 cb5 (7...Nh6 8.Nc3=) 8.Bb5 (8.Be5!? Nc6 9.Bb2+-) 8...Qa5+= 9.Nc3 Bb4 10.Nge2 Ne7 11.0-0 Nbc6 12.Bb2 0-0 13.Qa1 d5 14.Qa5 Na5 15.d4 (15.Ra1 Be6=) 15...Bf5 16.Na2 (16.f4 Bc2 17.de5 fe5=) 16...Bd6=+ 17.Rc1 Rc8 18.c3 ½-½. Bares Moreno,Pau (1920) - Sanchez Benlloch,Ignacio, Primera Provincial Norte, 2009.

5.e4 ab5 6.ab5 Ra1 7.Ba1 cb5 8.Be5!+- fe5 (8...Nc6!? 9.Bf4 Qe7+-) 9.Qh5+- Ke7 10.Qe5 Kf7 11.Qb8 Be7 (11...d5 12.Qf4 Qf6 13.Qf6 Nf6 14.e5+-) 12.Qf4 Bf6 13.e5 Qe7 14.Nf3 d6 15.d4 de5 16.de5 g5 (16...Kf8 17.Bb5 Qc7 18.0-0+-) 17.Ng5 (17.Ng5 Kg7 18.Nf3+-) 1-0. GuestGZYD – coronacoovid, freechess.org, 2020.

(--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.a4 a6).

5.e3 Be6 (---> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.a4 a6).

5.e3 Bc5 6.Bc4 (better is 6.Be5!? d5 7.Bf4+/–) 6...d5= 7.Bb3 d4 (7...Ne7 8.d4 ed4 9.ed4 Bb4 10.c3=) 8.ed4 ed4?? (better is 8...Bd4 9.Bd4 Qd4+=) 9.Qh5+– g6 10.Qc5 1–0. Wall,Bill – Hatherill,Chuck, Dayton, OH, 1980.

5.e3 Nc6 6.Nc3=.

5.e4= Bb7 6.d3 Nc6 7.Ne2 Bb4 8.Nd2 Na5 9.a3 Bd2 10.Qd2 Ne7?? 11.Qa5+– Nc6 12.Qd2 Qe7 13.g3 Qe6 14.Bg2 0-0-0 15.0-0 h6 16.Rfb1 g5 17.c4 h5 18.Bc3 h4 19.Rb7 Kb7 20.Rb1 Kc8 21.Qb2 Rde8 22.d4 Kd8 23.d5 Qd6 24.Qb7 Ne7 25.Bb4 Qb6 26.Be7 Re7 27.Qa8 Qb8 28.Qb8 (28.Rb8) 1–0. magne – toon magpie, ChessWorld.net, 2005.

5.Nc3 d5+= 6.e3 Nc5 (6...Bf5 7.Nf3+=) 7.Nf3 (better is 7.d4 ed4 8.ed4+=) 7...Bd7 (better is 7...Ne6+=) 8.Ne5!+/– (8.Nd5?! Bg4 9.Nc3 e4+=) 8...fe5? (better is 8...Ne7 9.Nd7 Qd7+/–) 9.Qh5+– g6 (9...Ke7 10.Nd5 Kd6 11.Be5 Kc6 12.Rb1+– (12.Bc7?! Qe8 13.Qf3 Bg4 14.Bb5 Kb5 15.Rb1 Ka6 16.Qg4 Qd7+–)) 10.Qe5 Be6 (10...Ne7 11.Qh8 h6 12.Be2+–) 11.Qh8 1–0. Wall,Bill – Erdoserdos, chess.com, 2010.

5.e4 d5 6.Nc3 Be6 7.Nf3 Nc5 8.Qe2 f5?? 9.ef5 e4 10.Nd4 Bf7+/– 11.Nf3 Qe7 12.Nd4 c6 13.a4 Qe5 14.Qe3 0-0-0 15.Be2 Nh6 16.f4 Qe7 17.0-0 g6? 18.g4 Rd6? 19.Ba3 b6? 20.a5! Qa7 21.ab6 Qa5 22.Rfb1 gf5 23.Bc1 Na4 24.Ra4 Qc5 25.b7 Kc7 26.b8Q Kd7 27.Rb7 1–0. ifairclough – quikeagle, net–chess.com, 2001.

5.e4 Ne7 6.d4 ed4 7.Bc4 c5 8.c3 d5 9.ed5 =. pierre – ramiroski, ChessHere.com, 2006.

5.cb5 Ra5 6.Nc3 (6.e4 d5=) 6...d5+= 7.e3 Bb4 (7...Be6!?+=) 8.Qb3= Bc3 9.Bc3 Ra7 (9...Ra8 10.d4+=) 10.d4 Nd7 (10...e4!?+=) 11.Qd5+/– Ne7 12.Qb3 Nb6 (better is 12...e4!?+/–) 13.de5+– fe5 (13...Ng8 14.a4 Qe7 15.a5+–) 14.Rd1 Bd7 15.Nf3 (better is 15.Be5 Qc8 16.Bg7+–) 15...Nbd5? (15...Qc8 16.Be5 Be6+–) 16.Rd5 (worse is 16.Be5 c6+–) 16...Nd5 17.Qd5 (17.Qd5 Qe7 18.Bc4+– (worse is 18.Ne5 Be6 19.Qd4 Ra2+–; worse is 18.Be5 Be6 19.Qd4 c5 20.bc6 bc6+–)) 1–0. ygfr – xhxw, internet, 2009.

5.cb5 d6 6.Nc3 Be6 7.Nf3 (7.e4 Ne7=) 7...Ne7 (7...d5 8.e3+=) 8.d4= Bc4 (8...Nd5 9.Qb3 c6 10.bc6 bc6 11.e4=) 9.e4+= Bf1 10.Kf1 Ng6 11.g3 Nd7 12.Kg2 Be7 13.Nd5 0-0 (13...c6 14.Ne3+=) 14.Rc1 c6 (14...Rc8 15.Qa4+=) 15.bc6+/– bc6 16.Rc6 Ra2?? (better is 16...f5 17.Re1 Ra5+/–) 17.Qb3+– (17.Ne7?! Qe7 18.Qb3 Qf7 19.Qf7 Rf7+/–) 17...Rb2 (17...Ra7 18.Ne7 Kh8 19.Ng6 hg6 20.Rd6+–) 18.Ne7 Kh8 19.Ng6 (19.Qb2 Qe7 20.Qb4 ed4 21.Qd6 d3 22.Qe7 Ne7+–) 19...hg6 20.Qb2 g5 (20...d5 21.ed5 e4 22.Nh4+–) 21.Rd6 Qc7 22.Rd5 Rc8 23.Qb5 Nf8 (23...Nb6 24.Rc5 Qd8 25.h4+–) 24.Rc5 (24.de5 g4 25.Nd4 Qf7+–) 24...Qd8 (24...Rb8 25.Rc7 Rb5 26.d5+–) 25.Rc8 Qc8 26.de5 g4 27.Nd4 fe5 28.Qe5 Qa8 (28...Qd7 29.Qh5 Kg8 30.Nf5+–) 29.Qf5 Qd8 30.Rd1 (30.Rd1 Qf6 31.Qg4+–) 1–0. mrkt – uqar, internet, 2009.

5.cb5 d6 6.e3 Be6 7.a4 Nd7 8.d4 Bf7 (8...d5 9.a5=) 9.Nf3 g6 (9...e4 10.Nfd2 f5 11.a5=) 10.Nc3 Bg7 11.Qc2 (11.a5 Ne7+=) 11...Ne7 12.Be2 0-0 13.0-0 d5 14.Rfd1 e4 15.Nd2 c6 16.Nb3 f5 17.Ba3 Re8 18.Rdc1 (18.a5 Be6+/-) 18...g5 (18...f4 19.ef4 Nf5 20.bc6 bc6 21.Qd1=) 19.g3 (19.a5 f4+/-) 19...f4+= 20.Nd1 (20.a5 f3 21.Bf1 g4+=) 20...f3 (20...Rc8 21.Qd2=) 21.Bf1 h5 (21...cb5!? 22.ab5 Be6=) 22.Be7+/- Qe7 23.bc6 bc6 24.Qc6 Reb8 25.Nc5 (25.a5 Qe6 26.Qc2 h4+/-) 25...Nf8 (25...Nc5!? 26.Rc5 Qd8+=) 26.a5 (26.Na6 Rd8+-) 26...Ra7 (26...Rc8 27.Qb7 Qb7 28.Nb7 Rc1 29.Rc1+/-) 27.a6 Rc7 28.Qa4 Rbc8 (28...Ne6 29.Nb7+/-) 29.Nc3+- Ra7 30.Rab1 Rac7 31.Nb5 White prepares the advance a7 (31.Rb7 g4+-) 31...Rc6 32.a7 Ra8 33.Nc3 (33.Na6!? Rc1 34.Rc1 Ra7 35.Na7 Qa7+-) 33...Rc7 34.Nb5 Rca7?? (34...Rc6 35.Na6 Rc1 36.Rc1 Ra7 37.Na7 Qa7+-) 35.Na7+- Ra7 36.Qb5 Rc7 37.Na6 (37.Na6 Ra7 38.Qb8+-) 1-0. ClayPigeons (2185) - K_E_L_Z (2165), Rated Bullet game, lichess.org, 2020.

5.cb5 Ne7 6.e3 Nd5 7.Bc4 (better 7.Be5!? d6 8.Bb2+-) 7...Nb6= 8.Bb3 d5 9.Ne2 (9.d4 e4=) 9...Bg4 (9...Nc4 10.Bc3=+) 10.h3 (10.d4 Bd6=) 10...Bh5 11.0-0 N8d7 (11...Nc4 12.Bc3=+) 12.Nbc3 (12.d4 Be7=) 12...Nc5=+ 13.Re1? (13.Bc2 d4 14.ed4 ed4-+) 13...Nb3 (better 13...Nd3 14.Qb1 Ne1 15.Qe1 Nc4-+) 14.Qb3=+ Be7 15.Ng3 Bf7 16.d4 0-0 17.Nf5 Nc4 18.Ne7 (18.e4 de4 19.de5 fe5 20.Ne4 Qd7 21.Ne7 Qe7=) 18...Qe7 19.Ba3?? (better 19.Rad1=+) 19...Na3 (19...Ra3 20.Qc2-+) 20.Nd5 (20.b6 Nc4 21.bc7 Qc7-+) 20...Bd5 (better 20...Qd8 21.e4 c6 22.Rad1-+) 21.Qd5 Kh8 (21...Qf7!? 22.Qc5-+) 22.Qb7 (22.Rac1 b6-+) 22…Nc2 (22...Nc2 23.b6 Ne1 24.bc7 Rfc8 25.Re1 Qc7 26.Qc7 Rc7-+) 0-1. aravind555 (1650) - WeltNochNichtBereit (1640), lichess.org, 2019.

6.a4 d6 7.e3 Bd7 8.Nf3 Ne7 9.Qb3 (9.d4 Bb4 10.Bc3 Bc3 11.Nc3 c6=) 9...d5 (9...e4 10.d4 ef3 11.dc5 dc5 12.gf3=) 10.d4 e4 (10...ed4 11.Nd4 c6 12.Bd3=) 11.Nfd2 (11.dc5 ef3 12.gf3 Bf5+/-) 11...Bb6 12.Nc3 c6 13.Be2 0-0 (13...Ba5!?+=) 14.Nce4 Kh8 15.Ng3 (15.Nc5 Bc8+/-) 15...cb5 (15...Ba5 16.Bc3+/-) 16.ab5 Ra1 17.Ba1 Qe8 18.0-0 Nf5? (18...Ba5 19.Nf3+-) 19.Bd3 (better 19.Nf5 Bf5 20.Qd5 Qc8+-) 19...Ne3?? (better 19...Ng3 20.hg3 Be6+/-) 20.fe3 (better 20.Re1+-) 20...Qe3=+ 21.Rf2 (better 21.Kh1 Qd2 22.Bb2=+) 21...Bd4?? (better 21...Qe1 22.Rf1 Qd2-/+) 22.Bd4+- Qd4 23.Nf3 Qa1 (better 23...Qc5+-) 24.Nf1 Qa7 (24...Be6 25.Qb4 Rc8 26.Qe7+-) 25.Qb1 (25.Qd5 Qb6+-) 25...Be6 (better 25...Qc5+-) 26.Bh7 Nd7 27.Bd3 Ne5 28.Qd1?? (better 28.b6 Qa3 29.Bf5+-) 28...Ng4+= 29.N3d2?? (better 29.Qe1+=) 29...Qf2-+ (29...Nf2?? 30.Qh5 Kg8 31.Bh7 Kh8 32.Bg6 Kg8 33.Qh7) 30.Kh1 Bf5 (better 30...Qb6 31.Qe2 Nf2 32.Qf2 Qf2-+) 31.h3 (31.Bf5 Qf5 32.Qe1-+) 31...Bd3 32.Qg4 Bf1 33.Qh5 Kg8 34.Qd5 (34.Qd5 Rf7 35.b6-+). ClayPigeons (2185) - zyzva (2170), Rated Bullet game, lichess.org, 2021.

6.e3 c6 7.Qh5 g6 8.Qh4 d5 9.f4 Nd7 10.Nf3 e4 11.Nd4 Bd4 12.Bd4 c5 13.Bb2 Kf7 14.g4 Ne7 15.Be2 Qb6 16.0-0 d4 17.Bc4 Kg7 18.f5?? Ne5–/+ 19.Na3? Nf3?? 20.Rf3–/+ ef3 21.g5? Nf5–+ 22.gf6 Qf6 23.Qf4 Be6 24.Be6 Qe6 25.ed4 cd4 26.Nc2 Rhe8?? 27.Nd4+– Nd4?? 28.Bd4 Kg8–/+ 29.Qf3 Ra2 30.Qb7?? Ra1 31.Ba1–+ Qe1 32.Kg2 Qa1 33.Qd5 Kf8 34.Qd6 Re7 35.Qd8 Kf7 36.Qd5 Kg7 37.b6 Qe5 38.Qf3 Qe2 39.Kg3 Qf3 40.Kf3 Rb7 41.Ke4 Rb6 42.Ke5 Kf7 43.d4 Re6 44.Kd5 Ke7 45.Kc5 Kd7 46.d5 Rf6 47.h4 h5 (47...h5 48.d6 Rf5 49.Kd4 Rf4 50.Ke3 Rh4–+) 0–1. elsh1403 – mazur (1700), 6202900 internet, 2011.

6.e3 d6 7.Qh5 g6 8.Qh4 Be6 9.Bd3 Bf7 10.Nf3 Ne7 11.Qf6+= Nf5?? 12.Qh8+– Ke7 13.Qh7 (13.Qh7 Qg8 14.Qg8 Bg8 15.Be4+–) 1–0. elsh1403 – midur (1765), internet, 2011.

6.e3 Ne7 7.Qh5 g6 8.Qh4 Nf5 9.Qc4 b6 10.Nf3 Qe7 11.Nc3 c6 12.a4 d5 13.Qb3 Be6 14.bc6+/– d4 15.Nd5 Qd6 16.Nf6?? Kf7 17.Bc4 Bc4–/+ 18.Qc4 Kf6 19.0-0 Nc6–+ 20.ed4 Ncd4 21.Nd4 Nd4 22.Kh1 Rac8 23.Qd3 Nf5 24.Qa6 Rc6 25.f4 Bd4 26.Ba3 Qc7 27.fe5 Be5 28.Rae1 Bh2?? 29.g4 b5?? 30.Qb5+– Rb8 31.Bb2 Kg5 32.Rf5 gf5 33.Qf5 Kh4 34.Qh5 Kg3 35.Be5 Kf3 36.Bc7 Bc7 37.Qf5 Kg3 38.Rg1 Kh4 39.Qh5 1–0. elsh1403 – konik205, internet, 2011.

6.e3 cb5 7.Bb5 Nc6 8.Ne2 Qb6 (8...d5 9.f4 Bd6 10.0-0=) 9.Qb3 Qc5 (9...Bc5 10.Nbc3+=) 10.Bc3 (10.d4 Qb4 11.Nd2 Ra5+=) 10...Nge7 11.0-0 (11.d4 ed4 12.ed4+=) 11...Nd5 (11...Na7 12.Bd3=) 12.Bc4 (12.d4 ed4 13.Bd4 Nd4 14.ed4+/–) 12...Ra5? (better is 12...Nc3 13.Bf7 Ke7 14.dc3 Ra5=) 13.Bd5 (13.Ba5 Na5 14.Rc1 Nb3 15.Bb3 Qc1 16.Nc1 Ne7=) 13...Qd5 14.Ba5 Qa5 15.Nbc3 (15.d4 Qb4+–) 15...Qb4 (15...Bc5 16.Rfd1+–) 16.Rfc1 Qb3 (16...Qa5 17.a3+–) 17.ab3 Bb4 (17...Kf7 18.d4 Be7 19.Nd5+–) 18.Nd5 0-0 (18...Kf7 19.Rc6! dc6 20.Nb4+–) 19.Nb4 (better is 19.Ra8!? Bd2 20.Rc2 Ba5+–) 19...Nb4 20.Ra8 Nc6 21.d4 (21.Nc3 d6+–) 21...d5 22.b4 (22.Rca1 Kf7+–) 22...Bf5 (22...Bg4 23.Rf8 Kf8 24.b5 Be2 25.bc6 bc6 26.Rc6 ed4 27.ed4+–) 23.Rf8 Kf8 24.b5 Na5 (24...Ne7 25.Rc7 b6 26.f4+–) 25.Rc7 (25.de5 fe5 26.Rd1 Nc4 27.Rd5 b6+–) 25...Bd3 (25...b6 26.f4 Bd3 27.Kf2+–) 26.Nc3 ed4 27.ed4 Bc4 28.Rd7 Nb3 (28...Kg8 29.b6+–) 29.Rb7 (29.Nd5?! Bb5 30.Rb7 Nd4+–) 29...Nd4 30.b6 Nc6 31.Rc7 (31.Rc7 Nd8 32.Rd7+–) 1–0. Zylla,Johannes – Legien, BS–MK Kreisliga, 1992.

6.e3 d5 7.d4 e4 8.Nc3=.

8.Ba1 Qa5 9.Nc3 Bb4 10.e3 d6 11.Nf3 Be6 12.Be2 Nd7 13.0-0 Ne7 14.Qb1 0-0 15.Rc1 Ra8 16.Nd1 (16.Bb2 d5=) 16...Nc5 (16...Bd2!? 17.Nd2 Qd2=+) 17.Bc3= Bc3 18.Nc3 Nc8 (18...Nb3 19.Rd1=) 19.Qb2 Nb6 20.Qb1 (20.d4 Nb3 21.Rd1=) 20...Nca4 (20...Qa3 21.Re1=+) 21.Na4 (21.Ne4 Rd8+=) 21...Na4 22.Qc2 Nb6 23.Qc3 1-0. ClayPigeons (2085) - sinuylehcimsinuy (2105), Rated Bullet game, lichess.org, 2019.

8.Ba1 Qa5 9.Nc3 Bb4 10.e3 Ne7 11.Bc4 g6 12.Nge2 Rf8 13.0-0 d6 14.Qb3 Bd7 15.Bb2 Bc3 16.Nc3 Qc7 17.Ra1 d5? 18.Bd5 Qd6? 19.Ra8 Nd5 20.Nd5 Be6 21.e4 Bd5 22.Qd5 Qd5+/– 23.Rb8?? Kd7–+ 24.ed5 Rb8 25.f4 Re8 26.fe5 fe5 27.g4 Kd6 0–1. elsh1403 – lathient (1790), internet, 2011.

8.Ba1 Qa5 9.Nc3 Bb4 10.e3 Ne7 11.Nf3 0-0 12.Be2 d5 13.0-0 Bd7 14.Qb3 Qa3 15.Rb1 Qb3 16.Rb3 Bc3 17.Bc3 Bg4 18.h3 Bh5 19.g4 Bf7 20.Bb4 Re8 21.Ra3 Nd7 22.Ra7 f5?? 23.Rb7 fg4 24.Rd7 gf3 25.Bf3 e4 26.Bg4 Ng6 27.Ra7 Ne5 28.b6 Rb8?? 29.b7 Nc6 30.Ra8 Be8 31.Be6 Kh8 32.Bd5 g6 33.Bc6 Bc6 34.Rb8 (34.Rb8 Kg7 35.Rg8 Kg8 36.b8Q Kf7 37.Qe5 g5 38.Qf5 Kg7 39.Bc3 Kh6 40.Bf6 Bd5 41.Qg5) 1–0. elsh1403 – bavlnka, internet, 2011.

8.Ba1 d5 9.e3 Bd6 10.Qb3 Ne7 11.d4 Be6 12.de5 fe5 13.Nf3 0-0 (better 13...Nd7!?=+) 14.Ne5 Kh8 (14...Nf5 15.e4 Ne7 16.Bd3+=) 15.Nf3 Qc8 (15...Nf5 16.Qd1+/-) 16.Nd4 (16.Qb2 Rf6+/-) 16...Bg8 (better 16...Qc1!? 17.Ke2 Bg4 18.f3 Bf5 19.Nf5 Nf5=) 17.Be2 Nf5 18.0-0 Nd4 19.Bd4 (worse 19.ed4 Qc7 20.h3 Qf7+/-) 19...Qf5 20.Qb2 Rf7 21.Nd2 Qg6 22.Nf3 Rf5?? (better 22...Rc7+-) 23.Nh4 Qh6 24.Bg7! Qg7 25.Qg7 Kg7 26.Nf5 Kf6 27.Nd6 Ke6 (27...b6 28.Nc8 Nd7 29.Ra1+-) 28.Nb7 Kd7 (28...Ke7 29.Ra1 Nd7 30.Ra7+-) 29.Na5 (better 29.Rc1 d4 30.Bg4 Ke7 31.Rc7 Kf6+-) 29...Kc7 (29...Bf7 30.b6 h5 31.Rc1+-) 30.Nb3 (30.Rc1 Kb6 31.Nc6 Nc6 32.Rc6 Kb7+-) 30...Kb6 31.Nd4 1-0. ClayPigeons (2095) - mansimum (2105), Rated Bullet game, lichess.org, 2020.

6.a4 Qd6 7.e3 Qe6 8.Nf3 Bd7 9.Qc2 Ne7 (9...Bd6 10.Ba3=+) 10.d3 (better 10.Qc7!? Bc8 11.Be2+/-) 10...c6=+ 11.Nc3 c5 (11...Nf5 12.Be2=) 12.Qb3 (better 12.Be2=) 12...Nf5?? (better 12...d4 13.Qe6 Be6-/+) 13.Qd5+/- Qd5 14.Nd5 Bd6 15.Nd2 0-0? (15...Be6 16.Nb6 Ra7+/-) 16.Nc4 Ne7 (16...Rd8 17.e4 Be6 18.Nd6 Nd6+-) 17.Ndb6 (worse 17.Nd6 Nd5 18.Nb7 Rc8+-) 17...Ra7 18.Nd6 Bb5 (18...Be6 19.Ba3 c4 20.Ndc4 Bc4 21.dc4+-) 19.Nb5 (better 19.ab5 Ra1 20.Ba1 Nd7 21.Nd7 Rd8 22.Nc5 Rd6+-) 19...Ra6 20.Nc4 (20.a5 Nbc6 21.Bc3 Na5 22.Ba5 Nc6+-) 20...Nd5 (20...Rd8 21.d4 cd4 22.ed4 ed4 23.Nd4+-) 21.Be2 (21.Ncd6!? Nd7 22.d4 Nb4 23.Bc4 Kh8+-) 21...Nc6 22.0-0 Ncb4 23.Rfd1 Rd8 24.Bf3 Nb6 (24...Rd7 25.d4 cd4 26.ed4+-) 25.a5 (better 25.Nb6!? Rb6 26.d4 cd4 27.ed4 ed4 28.Rd4 Rd4 29.Bd4 Rc6+-) 25...Nc4 26.dc4 Raa8 (26...Rd1 27.Rd1 Ra5 28.Rd8 Kf7 29.Rd7 Kg8 30.Nd6+-) 27.Rd8 Rd8 28.Bc3 (better 28.Bb7 Nc2+-) 28...Nd3 (28...Rd7 29.Rd1 Rd1 30.Bd1+-) 29.Be4 (29.Bb7!? Nb4+-) 29...Nb4 30.Bb4 cb4 31.Rb1 (31.Bb7 b3+-) 31...g6 (31...Ra8 32.Rb4 Ra5 33.g4+-) 32.Kf1 (32.Bb7 f5+-) 32...f5 (32...Ra8 33.Rb4 Rb8 34.Nc7+-) 33.Bd5 Kg7 34.Rb4 (34.Bb7 f4 35.ef4 ef4+-) 34...e4 (34...Ra8 35.Nd6 Ra5 36.Rb7 Kf8 37.Rf7 Kg8 38.Ra7 Rd5 39.cd5+-) 35.Nc7 Kf6 36.Ne6 (better 36.Rb7 f4 37.ef4 g5+-) 36...Rd6 37.Nd4 Ke5 38.Rb7 f4 39.Re7 Kf6 40.Re4 fe3 41.Re3 Ra6 42.Rf3 (42.Re6 Kg5 43.Ra6 Kh6 44.Re6 Kg7 45.Re7 Kf6 46.Rf7 Kg5 47.Ne6 Kh5 48.Rh7 Kg4 49.Be4 g5 50.h3) 42...Ke5 43.g3 (43.Bb7 Rd6 44.Nc6 Rc6 45.Bc6 Kd4+-) 43...Kd4 44.Kg2 (44.Ra3 Ra7+-) 44...Ra5 45.Re3 (45.Rf7 Ra2+-) 45...Rd5 (45...Ra6+-) 46.Rf3 (better 46.cd5 Kd5 47.Re7+-) 46...Re5 (better 46...Kc4!? 47.Rf7 h5+/-) 47.Rf4 Kc5 48.Re4?? (better 48.Kf3+-) 48...Re4-+ 49.Kf3 Rc4 50.g4 (50.h4 h6-+) 50...Kd5 51.h3 Ke5 52.Kg2 (52.Kg3 Rc3 53.f3 g5-+) 52...Rc3 53.h4 Kf4 (53...Kf4 54.f3 Rc2 55.Kf1 Kf3 56.Ke1 Kg4 57.Kd1 Kh4 58.Kc2 g5 59.Kd3 g4 60.Ke3 Kg3 61.Ke4 h5 62.Kf5 h4 63.Ke4 h3 64.Ke3 h2 65.Ke4 Kh4 66.Kf4 g3 67.Ke4 h1Q 68.Kd4 g2 69.Ke4 g1Q 70.Kd3 Qd5 71.Kc2 Qf2 72.Kc3 Qfd2) 0-1. ClayPigeons (2065) - Jimanjix (2070), Rated Bullet game, lichess.org, 2020.

6.a4 Bd7 7.e3 c6 8.Qb3 Bc5 9.Nf3 (9.d4 ed4 10.ed4 Bd6=) 9...Ne7 (9...e4 10.Nd4=) 10.d4 Bd6 (better 10...ed4!? 11.ed4 Bd6=) 11.de5+/- fe5 12.Ne5 0-0 13.Nf3 (13.Bd3 Bf5+=) 13...Nf5 14.Be2 Qe7 (14...Nh4 15.bc6 bc6 16.Rg1+=) 15.0-0+/- Be6 16.Nd4 (16.a5 Nd7+/-) 16...c5? (better 16...Nd4!? 17.Bd4 c5+=) 17.Ne6+/- Qe6 18.Bf3 c4 19.Qd1 Ne7 (19...Rd8 20.Nc3 Ne7 21.a5+/-) 20.g3 (20.Qd4!? Rf7 21.Rd1+-) 20...Nd7 21.Bg2 (21.Nc3 Nf6+=) 21...Nc5= 22.Nc3 Increases the pressure on the backward pawn 22...Nb3? (better 22...Be5=) 23.Ra2+- Nf5?? (better 23...Bb4 24.Nd5 Rad8+-) 24.Bd5 (24.Bd5 Qf7 25.Bf7 Rf7 26.Qd5+-) 1-0. ClayPigeons (2065) - mohammad_al_kahky (2015), Rated Bullet game, lichess.org, 2020.

6.a4 Be6 7.e3 Bc5 8.Nf3 Ne7 9.Nc3 Nd7 10.d4 Bd6 11.de5 fe5 12.Be2 c6 (12...Nf6 13.a5=) 13.Qc2 (13.Ng5 Nc5=) 13...0-0 14.0-0 (14.Ng5 Bf5 15.e4 h6=) 14...Qe8 (14...Nc5 15.bc6 bc6 16.Ng5=+) 15.Rad1 (15.a5 Nf6=) 15...Qh5 16.Nd4 Qh6 (16...Bg4 17.Bg4 Qg4 18.Nde2=+) 17.Ne6 Qe6 18.g3 (18.Rd2!?=+) 18...e4-/+ 19.Rfe1 Ne5 (19...Qh6 20.Rf1-/+) 20.Kg2 (20.Ne4!? Qg6 21.Be5 Be5 22.Bd3 de4 23.Be4=+) 20...N7g6 (20...Nf3 21.Bf3 Rf3 22.Rd2-/+) 21.h4 (21.Ne4 Nh4 22.gh4 Qg6 23.Kh1 Rf2-/+ (23...de4? 24.Rg1 Qh6 25.Qe4+-)) 21...Nf3 22.Rf1?? (22.Rh1 Nge5 23.Ne4 de4 24.Qe4=+) 22...Ngh4! 23.Kh1 (23.gh4 Qg4 Mate attack) 23…Qh3 0-1. ClayPigeons (2195) - EinHellesBitte (2315), Rated Bullet game, lichess.org, 2021.

6.d4+=.

6.e3 b6 7.Nc3 Bb7 8.Nf3 c6 9.a4 Nd7 10.Be2 Bc5 11.0-0 Nh6 12.Ba3 e4 13.Bc5 ef3–/+ 14.Bf3 Nc5 15.d4=+ Ne6 16.bc6= Bc6 17.Qb3 Ra5=+ 18.Rfb1 Ra6?? 19.Nd5 Bd5 20.Qb5 Kf7 21.Qa6+– Bf3 22.gf3 Ng5 23.Qc4 Kg6 24.Rb6?? Qb6–+ 25.a5 Nf3 26.Kf1 Nd2 (26...Nd2 27.Ke2 Nc4 28.ab6 Nb6–+; 26...Qa5 27.Ra5 Nd2 28.Ke2 Nc4 29.Rc5–+) 0–1. AbstractPoetic – jancix, internet, 2007.

6.e3 c6 7.Qh5 (7.Qh5 g6 8.Qd1=+). mic (2185) – pops (2295), net–chess.com, 2008.

6.e3 Bd6 7.Nf3 Ne7 8.a4 0-0 9.Nc3 Be6 10.Qc2 Nd7 11.Be2 Bf7 (11...c5 12.bc6 Nc6 13.Nb5=+) 12.d3 Ng6 (12...Nc5 13.d4 Bg6 14.Qd1 ed4 15.Nd4=) 13.0-0= Nc5 (better 13...Ra5=) 14.Rfd1 (14.d4 Nd7 15.a5=) 14...Ne6?? (better 14...d4!? 15.Ne4 Bb3-/+) 15.Bf1 (15.Nd5 Qd7+/-) 15...Re8 (15...Bb4 16.Qb3 Ba5 17.d4= (17.Nd5? Ng5-+)) 16.Ne2 (16.Nd5!? Nc5 17.d4 ed4 18.Bd4 Bd5 19.Bc5 Bf3 20.gf3+/-) 16...Bf8 (16...Qd7 17.d4=) 17.Ng3 Kh8 (17...d4 18.ed4 ed4 19.a5=) 18.Be2 Ra7 (18...Rc8 19.a5+=) 19.Rdc1 (19.a5 d4=) 19...Qa8 (19...d4 20.a5=) 20.Nf5 Nc5 (20...Ne7 21.b6 Ra5 22.Ne7 (worse 22.bc7 Rc5 23.Qc5 Nc5-/+) 22...Re7 A) worse 23.bc7 Rc7 (worse 23...Nc7 24.d4+=) 24.Qd1 Rc1 25.Qc1 Nc5=+; B) 23.d4+=) 21.Bd1 (21.d4 ed4 22.N3d4 b6+=) 21...h6 (21...Be6!? 22.Ng3 d4 23.ed4 Bb3+=) 22.d4+= ed4 23.N3d4 Rc8 (better 23...Ne5+/-) 24.Qe2 (better 24.b6 Ra6 25.Be2 cb6 26.Ba6 ba6 27.a5+/-) 24...Na4= 25.Ba4 Ra4 26.Qh5 (26.Qc2 Ra1 27.Ra1 Qb8=) 26...Ra1 27.Ra1 Qb8 28.Qh3 (28.Ba3 Qa7=+) 28...Ne5 (28...c5 29.Nf3 Be6 30.Qh5 Bf5 31.Qf5=+) 29.Nf3 Nc4 (29...Re8 30.Ne5 fe5 31.f4=+) 30.Bd4 (better 30.Nh6 gh6 31.Bf6 Kg8 32.Qg4 Kh7 33.Qf5 Bg6 34.Qd7 Kg8 35.Qe6 Kh7 36.Qd7 Kg8 37.Qe6 Kh7 38.Qd7=) 30...Ne5?? (better 30...Re8-/+) 31.Ne5+- (31.Be5?! fe5 32.Ne5 Be8+/-) 31...fe5 32.Be5 Bg6?? (better 32...Kh7+-) 33.Qh6 Kg8 34.Qg6 Re8 35.Nh6 (35.Bg7 Bg7 36.Qg7) 35...Kh8 36.Nf7 Kg8 37.Ng5 Re6 (37...Re5 38.Qh7) 38.Qh7 1-0. ClayPigeons (2070) - TigerGv (2145), Rated Bullet game, lichess.org, 2021.

6.e3 Nd7 7.Nf3 Ne7 8.Be2 Ng6 9.0-0 Bc5 (9...Bd6 10.Nc3 Nb6 11.a4=) 10.d4+= Bd6 11.de5 fe5 12.Qb3 (12.Qd5!? Nc5 13.Qd2+=) 12...Nb6 (12...Nc5 13.Qd1=+ (worse 13.Qd5 e4 14.Rd1 ef3 15.Bf3 Qe7-/+)) 13.Rd1 (13.a4 Be6=) 13...Be6 (13...e4 14.Nd4 Rf8=+) 14.e4 (better 14.a4!?=) 14...Nf4-/+ 15.Bf1?? (better 15.Qc2 d4 16.Bf1-/+) 15...de4-+ 16.Qc2 (16.Qe3 ef3 17.Qf3 0-0-+) 16...ef3 17.g3 Ne2! 18.Be2 fe2 19.Qe2 0-0 20.a4 (20.Be5 Bc4 21.Qc2 Be5 22.Rd8 Rfd8-+ (worse 22...Rad8 23.Na3-+; 22...Ba1?! 23.Ra8 Ra8 24.Nd2 Ra2 25.Qe4-/+)) 20...Qf6 21.f4 (21.Nc3 Bb3 22.Rdc1 Nc4-+) 21...Na4 (21...Bc5!? 22.Kh1 Bb3 23.Be5-+) 22.Be5 Be5 (22...Bc5 23.Kg2 Qf5 24.Nd2-+) 23.fe5 (23.Qe5 Qe5 24.fe5 Nb2 25.Ra8 Ra8-+) 23...Qe7 24.Nd2 (24.Qc2 Qb4 25.Qc1-+) 24...Qc5 25.Kh1 (25.Kg2 Nc3 26.Ra8 Bd5 27.Nf3 Ne2 28.Rf8 Kf8 29.Rd5 Qd5 30.Kf2-+) 25...Nc3 26.Ra8 Ra8 (26...Ne2 27.Nf3 Qf2 28.Rf8 Kf8 29.Rd8 Ke7 30.Rd7 Kd7 31.h3 Ng3) 27.Qf2 (27.Ne4 Bd5 28.Rd5 A) 28...Ne2 29.Rc5 (worse 29.Nc5 Nc3 30.Rd3 Nb5=) 29...Ra1 30.Kg2+/-; B) 28...Qd5-+) 27...Bd5 (27...Qf2 28.Re1 Bd5 29.Ne4 Be4 30.Re4 Qf1) 28.Kg1-+ Qf2 (better 28...Rf8 29.Nf3 (29.Qc5?? Ne2) 29...Qf2 30.Kf2 Nd1 31.Ke2 Bf3 32.Kd3 Rd8 33.Kc4-+) 29.Kf2 Nd1 30.Ke2 (30.Ke1 Nc3-+) 30...Nc3 31.Kd3 Nb5 32.Nb1 c6 0-1. ClayPigeons (2085) - Spyros_44 (2120), Rated Bullet game, lichess.org, 2020.

6.Nf3 =+.

5.a4 Bb4 6.e3 d5 7.Nc3 Bf5 8.Nf3 d4 9.Ne2 ab5 10.Ng3 Bg4 11.h3 Bf3–+ 12.Qf3 ba4 13.ed4 a3 14.Bc3 c5 15.de5 Qe7 16.Nf5+/– Qe6?? 17.Ng7+– (17.Ng7 Ke7 18.Ne6+–) 1–0. elsh1403 – hugr, internet, 2011.

5.a4 ab5 6.cb5 cb5 7.ab5 Ra1 8.Ba1 d5 9.e3 Bd7 10.Nc3 d4 11.Ne4 Qa5 12.Qb1 de3= 13.fe3 Bb4 14.Bc3 Bc3 15.Nc3 Ne7 16.Bc4 g6 17.Nf3 Bf5 18.Qb2 Nd7 19.0-0 Nc5 20.Nh4 Bd3 21.Bd3 Nd3 22.Qb3 f5 23.Nf3 Kf8?? 24.Ng5+– Kg7 25.Qf7 Kh6 26.Qe7 (26.Qe7 Qd8 27.Nf7 Kh5 28.Nd8 Re8 29.Qh7 Kg5 30.h4 Kg4 31.Qh6 Rd8 32.Qg5) 1–0. elsh1403 (1615) – hugr, internet, 2011.

5.a4 ab5 6.cb5 d5 7.e3 Bf5 8.Nc3 Bb4 9.Qb3 Bc3 10.Bc3 Ne7 11.Nf3 Be6 12.Be2 Qd7 13.0-0?? d4–+ 14.ed4?? Bb3 (14...Bb3 15.de5 Nd5–+) 0–1. elsh1403 (1615) – hugr (1730), internet, 2011.

5.a4 d5 6.e3 Bb4 7.Nc3 Be6 8.Qb3 Bc3 9.Bc3 Ne7 10.Nf3 0-0 11.Be2 Nd7 12.d4 e4 13.Nd2 f5 14.0-0 f4 15.ef4 Rf4 16.Bb2 Ng6 17.cd5 Bd5 18.Bc4 Nf6 19.Rfe1 Ng4 20.Ne4 Qh4? 21.Bd5 cd5 22.Qd5 Kh8 23.h3 Nf2 24.Nf2?? Qf2–/+ 25.Kh1 Nh4?? 26.Qb7+/– Raf8 27.Rg1?? Nf5?? 28.d5?? Qb2–+ 29.d6 Qe5 30.d7?? Ng3 31.Kh2 Rf2 32.h4 Nf1 33.Kh3 Qg3 0–1. elsh1403 (1605) – hugr, internet, 2011.

5.Bb5 Ra5 6.Nc3 Ba3 (6...b6 7.Nf3 c6 8.Be2=) 7.Ba3 Ra3 8.Nf3 (8.Qg4 g6+=) 8...Na6 (8...c6 9.Be2=) 9.Na4 (9.0-0 b6=) 9...c6= 10.Ba6 Ra4 11.Be2 Nh6 12.0-0 e4 (12...Qa5 13.d4=) 13.Nd4 d5 14.Bh5 (14.c4 Ra3+=) 14...Nf7 15.Bf7 Kf7 16.c3 (better 16.Qh5 g6 17.Qh6=) 16...c5?? (better 16...Qa5=) 17.Qa4+- cd4 18.cd4 Bd7 19.Qb3 Bc6 20.a4 Re8 21.a5 Qa8 22.Qb6 White prepares a6 (22.d3 f5+-) 22...g5 (22...Qa6 23.Qc7 Kg8 24.Rfb1+-) 23.a6 Re7 (23...Re6 24.Rfc1 Kg6 25.d3+-) 24.ab7 (better 24.Rfc1 Be8+-) 24...Qb7 25.Qb7 (25.Qc5 Qb5+-) 25...Bb7 (25...Rb7 26.Rfb1 Rb1 27.Rb1+-) 26.Ra7 (26.d3 ed3 27.Rfd1 f5+-) 26...Ke6 (26...Bc8 27.Ra5 Be6 28.f3 ef3 29.Rf3+-) 27.Rb1 Bc6 28.Ra6 Kd6 29.Rbb6 Rc7 30.Kf1 Kd7 31.f3 (31.d3 ed3 32.Ke1 f5+-) 31...f5 32.fe4 fe4 33.Ke2 h5 34.d3 g4 (34...ed3 35.Kd3 g4 36.Ra5+-) 35.de4 de4 36.d5! Bd5 (36...Bb7 37.Ra5 Bc8+-) 37.Rd6 A double attack 37...Ke7 38.Rd5 Rc2 39.Rd2 (39.Ke1 Rc1 40.Kd2 Rf1 41.Rh5 Kf7+-) 39...Rc1 40.Rh6 Rg1 (40...Rc5 41.Ra2 Kf8 42.Ra7+-) 41.Rh5 (better 41.Kf2!? Ra1+-) 41...Rg2 42.Kd1 Rg1 43.Kc2 Re1 (43...Ra1 44.Re5 Kf6 45.Re4+-) 44.Re5 Kf6 45.Re4 Kf5 46.Rf4 Kg5 47.Rd5 (better 47.Kd3!? Ra1 48.Rg2 Ra3 49.Kd4 Ra4 50.Ke5 Ra5 51.Kd6 Ra6 52.Kc5 Ra5 53.Kb4 Re5 54.Rgg4 Kh5+-) 47...Kh4 48.e4 Re2 (48...Rh1 49.Rf2+-) 49.Kc3 (better 49.Rd2 Re3+-) 49...Rh2 50.e5 Re2 (50...Kg5 51.Rf8 Re2 52.Kd3+-) 51.Rf6 (51.Kd3 Re1+-) 51...Kg3 52.e6 Kh2 (52...Kh4 53.Kd4 Kg3 54.Re5 Rd2 55.Ke3+-) 53.Rh5 (53.Rd2 Kg2 54.Re2 Kh3 55.e7 Kh4 56.e8Q g3 57.Qa4 Kg5 58.Qf4 Kh5 59.Rh6) 53...Kg2 54.Rh7 g3 55.e7 Rf2 (55...Kg1 56.Kd3 g2+-) 56.Rf2 gf2 57.Rf7 (57.e8Q f1Q 58.Qg6 Kf2 59.Rf7 Ke1 60.Qe4 Qe2 61.Qh1 Qf1 62.Qf1) 57…f1Q+- (57...f1Q 58.Rf1 Kf1 59.Kd4 Ke1 60.e8Q Kf2 61.Qh5 Kg2 62.Ke3 Kg3 63.Qg5 Kh3 64.Kf3 Kh2 65.Qg2) 0-1. aravind555 - matte949494, lichess.org, 2018.

5.Bb5 Nc6 6.Qh5 g6 7.Qh4 Bg7 8.Bd3 Nge7 9.f4 d6 10.Nf3 0-0 11.0-0 d5 12.fe5 fe5 13.Ng5 h6 14.Rf8? Bf8?? 15.Nh3=+ Bg7 16.Na3?? e4–+ 17.Bg7 Kg7 18.Bb5 Ra3 19.Rf1 Nf5 20.Qf2 Be6 21.g4 Nd6 22.Bc6 bc6 23.Nf4 Bg4 24.Qg3 Qg5 25.h4 Nf5 26.Ne6= Kg8 27.Qc7?? Qe7 28.Qc8? Kh7–+ 29.Nf8 Kg7 30.Ne6 Kf6 31.Nf4 Ra7?? 32.Qc6 Qd6 33.Qe8? Re7 34.Qg6+– Ke5 35.Qd6 Nd6?? 36.Ng6= Ke6 37.Ne7 Ke7 38.Rb1 Bd7 39.Rb6 Nf5 40.h5 Be6 41.Kf2 Kf6 42.Ke2 Ng7 43.d3 Nh5= 44.d4 1–0. elsh1403 (1675) – okena (1725), internet, 2011.

5.d4 Bb4 6.c3= Ba5 (6...Be7 7.de5 b4 8.Bd3+=) 7.de5+= c6 (7...b4 8.Bd3=) 8.a4 (8.Bd3 Qe7 9.Qh5 Qf7 10.Qf7 Kf7+/–) 8...b4 (8...ba4 9.Ra4 Qb6 10.Ba3+=) 9.Bd3 (9.Bc4 Qe7 10.Qb3 fe5 11.Bg8 d5 12.Bd5 cd5 13.Qd5 bc3 14.Bc3 Nc6=) 9...Qe7 (9...Nh6 10.c4+=) 10.Qh5 Qf7 (10...Kd8 11.Nf3+/–) 11.Qf7+/– Kf7 12.Nf3 Ne7 (12...b6 13.0-0+/–) 13.0-0 (13.ef6 gf6 14.0-0 bc3 15.Nc3 d5+=) 13...Na6 (13...bc3!? 14.Nc3 fe5 15.Ne5 Kg8+/–) 14.Bc4 Kg6 15.Rd1 Nc5 (15...Ng8 16.cb4 Nb4 17.Nc3+–) 16.Nh4 (16.cb4 Bb4 17.Nh4 Kg5 18.ef6 gf6 19.f4 Kh6 20.Bf6 d5 21.Bh8 Bg4+–) 16...Kg5 17.cb4 Bb4 18.ef6 gf6 (18...d5 19.Nf3 Kh6 20.fg7+–) 19.f4 Kh4 (19...Kh6 20.Bf6 Re8 21.Be7+–) 20.Bf6 Kh5 21.Bf7 Kh6 (21...Ng6 22.Bh8 d5 23.Bc3+–) 22.g4 (22.Be7?! d5+=) 22...Ng6 23.g5 Kh5 24.Bh8 d5 25.Bc3 Bc3 26.Nc3 Bg4 27.Nd5! cd5 28.Rd5 Na4 (28...Ra4 29.Ra4 (29.Rc5?! Ra1 30.Kf2 Rh1=) 29...Na4 30.f5+–) 29.f5 Bf3 30.Re5 Bc6 31.fg6 hg6 32.Re6 (better is 32.e4 Rc8 33.Be6 Rf8+–) 32...Ra5 (32...Bd5 33.Bg6 Kg5 34.Rd6+–) 33.Bg6 (33.Rg6?! Rg5 34.Rg5 Kg5+–) 33...Kh4 (33...Kg5 34.Kf2 Kh4 35.Bc2+–) 34.Kf2 Rg5 35.Rc6! bc6 (35...bc6 36.Ra4 Remove defender) 36.Ra4 Kh3 37.Be4 Kh2 (37...c5+–) 38.Ra1 Kh3 39.Bf3 1–0. pcmvr (2225) – vitorluiz (2265), net–chess.com, 2006.

5.d4 c6 6.Bd3 Qa5+= 7.Nd2 Bb4 (7...Qb4 8.Qb1+=) 8.de5= Bc3 (8...fe5 9.Be5 Nf6 10.Ne2=) 9.Bc3 Qc3 10.f4 fe5 11.Qh5 g6 12.Qe5 Qe5 13.fe5 Ra4 14.Ne4 Ke7 15.Nf3 h6?? (better is 15...Nh6+/–) 16.Nh4+– Kf7 (16...d5 17.Ng6 Kd8+–) 17.Nd6 (better is 17.0-0 Ke6 18.Rf8 Re4 19.Be4+– (19.Rc8?! Rh4 20.Rb8 Ke5+–)) 17...Kg7 (17...Ke6 18.Ng6 Rh7 19.Bf5 Kd5 20.Nc8 Rg7 21.Nb6 Kc5 22.Na4 ba4+–) 18.0-0 (18.Nc8?! Rh4 19.Nd6 h5+–) 18...Rh4 (18...Nf6 19.ef6 Kf8 20.Ng6 Kg8 21.f7 Kg7 22.Ne8 Re8 23.fe8N Kg8 24.Rf8 Kh7 25.Rh8) 19.Rf7 (19.Nc8?! h5 20.Nd6 Nh6+–) 1–0. pierre – jimmychi, chess.com, 2007.

5.d4 c6 6.Bd3 ed4 7.Qh5 Ke7 8.Bd4 Nh6 9.Nf3 (9.Ne2 b6=) 9...d5 (9...d6 10.Nbd2=) 10.Bc5 Kd7 11.Bf8 Qf8 12.0-0 g6 (12...Qb4 13.Nd4=) 13.Qh4 Kc7 (13...Ke8 14.e4 de4 15.Qe4 Kf7 16.Re1=) 14.Qf4 Kd7 (14...Kd8 15.e4=) 15.a4 (15.e4 g5 16.Qd2 de4 17.Be4 Kc7+=) 15...ba4 16.c4 (16.Ra4 Ra4 17.Qa4 Ke8+=) 16...b5 (better is 16...dc4!? 17.Bc4 Qg7+=) 17.cd5 cd5? (17...Bb7!?+=) 18.Nc3 (better is 18.Bb5 Ke6 19.Ba4+–) 18...Kc6? (better is 18...Kd8+/–) 19.Bb5+– Kb6 20.Nd5 Kb5 21.Nd4 Kc4 (21...Kc5 22.Rac1 Kd5 23.e4 Kd4 24.Rfd1) 22.Rac1 Kd5 23.e4 Kd4 24.Rfd1 1–0. pcmvr (2110) – sbderkach (1680), net–chess.com, 2006.

5.d4 c6 6.de5 d6 7.ed6 Be6=.

5.d4 ed4 6.ed4 c6 (6...Qe7 7.Qe2–/+) 7.Bd3+= Ne7 8.Nf3 d6 9.0-0= Ng6 10.d5 (10.Re1 Kf7=) 10...Be7 11.Nd4 (11.Bg6 hg6 12.Qe2 Rh5+=) 11...0-0 (11...Ne5 12.Ne6 Be6 13.de6 Nd3 14.cd3+=) 12.Bg6 (12.dc6 bc6 13.Bg6 hg6 14.Nc6 Nc6 15.Qd5 Rf7 16.Qc6 Bf5=) 12...hg6 13.Re1 Bd7 (13...b4 14.Ne6 Be6 15.de6=) 14.Qd3 (14.Ne6 Be6 15.de6 d5=) 14...Qe8 (14...Kh7 15.Ne6 Be6 16.Re6=) 15.Qb3 (15.dc6 Nc6 16.Nb5 Bf5+=) 15...Kh7 16.c4 Na6 17.cb5 Nc5 (17...cb5 18.Nd2+=) 18.Qe3+/– Rf7 19.bc6 bc6 20.Nc3 Na4 (better is 20...Rb8 21.Ba3 Rb7+/–) 21.Nc6?? (better is 21.dc6 Bc6 22.Nc6 Qc6 23.Qe6+/–) 21...Bc6–/+ 22.dc6 Nb2 23.Nd5 Nc4 24.Qh3 Kg8 25.Re4 f5 (25...Ne5 26.Rh4 Rf8 27.Qe6 Rf7 28.Qh3=) 26.Rc4 (26.Ne7 Re7 27.Re7 Qe7–+) 26...Bf6 27.Rac1 1–0. pcmvr (2560) – leen (2245), net–chess.com, 2006.

5.d4 ed4 6.Bd4 b4 7.Bc4+=.

5.d4 ed4 6.Bd4 b4 7.Bd3 Qe7 (7...Nh6 8.Qh5 Nf7 9.Nf3+=) 8.Ne2 (8.Nf3 d5+=) 8...Nc6 9.0-0 Qf7 10.c4 Bd6 (10...Ne5 11.Nf4+=) 11.c5 (11.Nd2 Ne5 12.Ne4 Be7 (worse is 12...Nc4 13.Qc2 Ne5 14.Nd6 cd6 15.Bh7+=) 13.Be5 fe5+=) 11...Be5 (worse is 11...Nd4 12.cd6 Ne2 13.Be2 cd6 14.Qd6+=) 12.f4 Bd4 (12...Nd4 13.Nd4 Ra2 14.Ra2 Bd4 15.ed4 Qa2 16.Rf2=) 13.Nd4 (13.ed4 Nge7+=) 13...Nd4 (13...Qd5!? 14.Nf5 g6 15.Nd6 Kf8+=) 14.ed4=. pcmvr (2760) – firesparrow (2295), net–chess.com, 2006.

5.d4 ed4 6.Bd4 c6 7.Bd3= Bb4 (7...Qa5 8.Nd2=) 8.Nd2 (8.c3 Be7=) 8...Ne7 (8...Nh6 9.Qh5 Nf7 10.Ngf3=) 9.a3 (9.Qh5 Kf8=) 9...Bd2+= (worse is 9...Ba3 10.Bc5 Bc5 11.Ra8+/–) 10.Qd2 (10.Kd2 d6+=) 10...d6 (10...0-0 11.Nf3+=) 11.Nf3 (11.Ne2 0-0+=) 11...0-0 12.0-0 (12.c4 bc4 13.Bc4 Kh8+=) 12...Bg4 13.c4 (13.Rfb1 Bf3 14.gf3 Nd7–/+) 13...Bf3–/+ 14.gf3 bc4 15.Bc4 d5 (15...Kh8 16.a4–/+) 16.Be2 (16.Bd3 b5–/+) 16...Nd7 17.Kh1 (17.Qc2 Qe8–/+) 17...c5 (17...b5 18.Qc2–/+) 18.Bc3 Qc7 (18...Ne5 19.Rfb1 Qc7 20.a4–/+) 19.a4 (19.Rfd1 Ne5–/+) 19...Ra7 (19...c4 20.Rg1–/+) 20.a5 Rfa8 21.Rfb1 Nc6?? (better is 21...b6–/+) 22.Qd5+= Kf8? (better is 22...Kh8+=) 23.Bc4+– Nce5 (23...Ke8 24.Qf7 Kd8+–) 24.Be5 Qe5 (24...Ne5 25.Qg8 Ke7 26.Qg7 Ke8 27.Qc7 b6 28.Bb5 Kf8 29.Qb6 Kg7 30.Rg1 Ng6+–) 25.Qf7 1–0. pcmvr (2560) – leen (2240), net–chess.com, 2006.

5.Be5 fe5–/+ 6.Qh5 Ke7 7.Qe5 Kf7 8.Qd5 Ke8 (8...Kg6 9.Nf3 Nc6 10.Bd3 Kh6 11.g4=+) 9.Qh5= Ke7 10.Qe5 Kf7 11.Qd5 Ke8 (11...Kg6 12.Nf3 Nc6 13.Bd3 Kh6 14.g4=+) 12.Qh5= Ke7 ½–½. mrkt – jclaes, GameColony.com, 2002.

6.Bd3 d5 7.Qh5 Ke7!? 8.Ba3 Kd7 9.Bf5 Kc7 10.Bf8 Qf8 =.

6.Bd3 d5 7.Qh5 Ke7 8.Ba3 Kd7 9.Qf7 Ne7 10.Bf5 Kc7 11.Bc8 Kc8 12.Be7 Qe7 13.Qe7 Be7 14.Nf3 Na6 15.0-0 Nb4 16.Ne1 Ra2 17.Ra2 Na2 18.c3 Nc1 19.d4 e4 20.Nc2 Nd3 21.f3 ef3 22.gf3 Kc7 23.e4 de4 24.fe4 Ra8 25.Nd2?? Ra2–+ 26.Rf3 Nc1 27.Ne3 Rd2 28.Nf5 Bf8 29.e5 fe5 30.de5 Ne2 31.Kf1 Bc5 32.Ng7 Nc1 33.Rf7 Kb6 34.Ne6 Nd3 35.Nd8 Rf2 36.Rf2 Nf2 37.e6 Ne4 38.Ke2 Nc3 39.Kd3 Nd5 40.h4 Kc7 41.Nf7 Nf4 42.Ke4 Ne6 43.Ke5 Nd4 44.Ng5 b5 45.Nh7 Nf3 46.Ke4 Nh4 47.Kd3 Kb6 48.Kc3 b4 49.Kb3 Nf5 50.Ng5 Nd4 51.Kb2 Kb5 0–1. elsh1403 – maokey (1615), internet, 2011.

6.Bd3 d5 7.Qh5 g6 8.Bg6!+– Ke7 9.Bh7 Be6+/– 10.Qg6 Bf7 11.Qf5 Nh6 12.Qd3 e4? 13.Qd4?? Rh7–/+ 14.Qf6 Ke8 15.Qe5 Qe7 16.Qe7 Ke7 17.Ne2 Bg7 18.Ba3?? Kd7 19.c3 b5 20.Nd4 Ng4 21.h3 Na6 22.0-0 Ne5 23.Nf5 Bf6 24.d4? ed3 25.Nd2 Nc4 26.Nc4 dc4 27.Bd6 Be6 (27...Be6 28.e4 Bc3–+) 0–1. elsh1403 – lathient (1765), internet, 2011.

6.Bd3 Ne7 7.f4 ef4 (7...Qb6 8.Bc3 ef4 9.Bd4=+) 8.ef4 (8.Bf6 Qa5 9.Bc3 Qg5=) 8...d5 9.Qh5 g6 10.Qh4 Nd7 (10...Bg7 11.Nf3=+ (worse 11.Bf6 Nf5 12.Bd8 Nh4 13.Bh4 Ba1-+)) 11.Bf6 Nf6 12.Qf6 Rg8 13.c3? (13.Qh4 Bg7 14.c3 Qb6=+) 13...Bg7 (better 13...Qb6 14.Na3 Ra3-+) 14.Qh4= Qd6 (14...Qb6 15.a4=+ (15.Qh7 Qb2-+)) 15.Ne2 (15.Qh7 Qf6 (15...Qf4?! 16.Ne2 Qg5 17.h4=) 16.Bg6 Ng6 17.Qg8 Nf8-+) 15...Bf5 (15...Bf6 16.Qf2= (16.Qh7? Bg4-+)) 16.Qg3 (16.Bf5 Nf5 17.Qh3 h6+=) 16...0-0-0 (16...Rf8 17.Bf5 Nf5 18.Qf3=) 17.0-0+= h5 (17...Rde8 18.Re1+=) 18.a4 Rde8 19.a5 Bd3 (19...Kd8 20.a6 ba6 21.Ra6+=) 20.Qd3+/- Nf5 21.a6 b5 (21...ba6 22.Ra6 Qc5 23.Kh1+/-) 22.a7 Kb7 23.Nd4?? (better 23.Ng3!? Qc5 24.Kh1+/-) 23...Qc5 (23...Nd4 24.a8B (worse 24.cd4 Qb4 25.Kh1 Qd4-+) 24...Ra8 25.Ra8 Ra8 26.cd4-/+) 24.Kh1= Nd4 25.cd4? (25.a8B Ra8 26.Ra8 Ka8 27.cd4 Bd4=+ (worse 27...Qd4 28.Qg6 Qf6 29.Qh5+=)) 25...Bd4?? (25...Qd4 26.Qc3-+) 26.Ra2?? (26.Nc3 Qc4 27.Qh3 Rg7=) 26...Ra8?? (better 26...Qc4 27.Qc4 dc4-+) 27.Nc3 (27.Rc2!? Qa7 28.Rfc1+=) 27...Ra7 (27...Qc4 28.Qb1=+) 28.Ra7 Ka7 (28...Qa7 29.Nb5 cb5 30.Qb5 Kc7 31.Qd5+-) 29.Ne2 Bf6 30.f5 (30.Rc1 Qd6=) 30...g5 (30...Qc4 31.Qe3 d4 32.Qa3 Kb6 33.d3=) 31.Qf3 (31.Rc1!? Qd6 32.Nd4+=) 31...g4=+ 32.Qf4 Kb7 33.d4 Qe7 34.Ng3 (34.Nc1 Qb4 35.Qh6 Re8-/+) 34...h4 35.Nh5 Bg5 (35...g3-/+) 36.Qe5 (better 36.Qg4 Qe4 37.Nf6 Qg4 38.Ng4=) 36...Qe5 37.de5 d4 (37...Re8!? 38.Re1 b4-/+) 38.f6=+ d3 (38...Bh6 39.f7 Rd8 40.Nf4=) 39.e6 (better 39.f7 Rf8 40.e6=) 39...Bf6?? (better 39...Ra8-/+) 40.Nf6+/- (40.Rf6? Rg5 41.Rf7 Ka6-+) 40...Rd8?? (better 40...Rg7 41.Rd1 Re7 42.Ng4 Re6+/-) 41.e7+- (41.Ng4?! Rd6 42.Ne5 d2+/-) 41...Rb8 (41...Ra8 42.e8Q Re8 43.Ne8+-) 42.e8Q (better 42.Rd1!? c5 43.Rd3 Ra8+-) 42...Re8 43.Ne8 c5 44.Nd6 Kb6 (44...Kc6 45.Rf6 g3+-) 45.Nb5 (better 45.Rb1+-) 45...Kb5 46.Kg1 c4 (better 46...g3 47.hg3 hg3+-) 47.Kf2 c3? (47...Kb4+-) 48.Ke3 Kc4 (48...d2 49.Kd3 Kb4+-) 49.Rc1 (better 49.Rf4 Kb3 50.Kd3+-) 49...d2+= 50.Rd1 (50.Rf1 Kb3 51.Kd3+-) 50...c2=+ 51.Kd2 cd1Q 52.Kd1 Kd4 53.Ke2 Ke4 54.Kf2 Kf4 55.g3 hg3 56.hg3 Kf5 57.Ke3 Ke5 58.Kd3 Kd5 59.Ke3 Ke5 60.Kd3 Kd5 61.Ke2?? (better 61.Ke3 Ke6 62.Ke4=) 61...Ke4-+ 62.Kf2 Kd3 63.Kg2 Ke2 64.Kg1 Kf3 65.Kh2 Kf2 66.Kh1 Kg3 67.Kg1 Kf3 (better 67...Kh3-+) 68.Kh2= g3 69.Kg1?? (better 69.Kh1 g2 70.Kg1=) 69...g2-+ 70.Kh2 Kf2 71.Kh3 ½-½. zembelek (2080) - andreasw (2165), Rated Blitz game, lichess.org, 2014.

6.Be2 Bb4 7.c3 Bc5 8.d4+= Bd6 9.c4 Ne7 10.c5+= Bc7 11.Nf3 Ng6 12.0-0 0-0 13.Qb3 Kh8 14.a4 d6 15.cd6 Bd6 16.de5 Ne5= 17.Ne5 Be5 18.Be5 fe5 19.Nc3 Qe7 20.h3 Be6 21.Qb2 Na6 22.Ba6 Ra6=+ (22...Ra6 23.Rfd1 b6=). makaveli1982 – edineic, internet, 2007.

6.Be2 b5 7.Nc3 d5 8.Nf3 Bg4 9.0-0 g5 (9...Bd6 10.a4 b4 11.Nb1=+) 10.a4= b4 11.Nb1 e4? (11...Bd6!?=) 12.Nd4 (12.Ng5!? Be2 13.Qe2 h5+-) 12...Be2 13.Qe2 c5 (13...Qd7!?+-) 14.Qh5 Ke7 15.Nf5 Kd7 (better 15...Ke6 16.f3 ef3 17.Qf3 Ra5+-) 16.Qg4 (better 16.Qf7 Kc8 17.c4+-) 16...h5+= 17.Qh3 g4 18.Qh4 Ke6 (18...Nc6 19.f3 gf3 20.gf3 ef3 21.Qh3+=) 19.Ng3+- Qe8 Exerts pressure on the isolated pawn 20.d3 Nc6? (better 20...ed3!? 21.cd3 c4+=) 21.de4+- d4 (21...de4 22.Nd2+-) 22.ed4 Nd4 23.Nd2 (better 23.Bd4!? cd4 24.Nd2 Ne7+-) 23...Nc2+- 24.Rac1 b3 (24...Na3 25.Nb3 Rc8+-) 25.e5! Qa4 (25...fe5 26.Nb3) 26.ef6 Nf6?? (better 26...Kf7+-) 27.Qf6+- Kd5 (27...Kd7 28.Qf7 Kc6 29.Bh8+-) 28.Qh8 (28.Rfd1 Qa6 29.Nb3 Kc4 30.Rc2 Kb3 31.Qc3 Ka4 32.Ra1 Kb5 33.Qd3 Kb6 34.Ra6 Ra6 35.Bh8 Ra4 36.Qd8 Kb7 37.Be5 Rd4 38.Rb2 Rb4 39.Qc7 Ka6 40.Qc6 Ka5 41.Ra2 Ra4 42.Ra4) 28...Bh6 (28...h4 29.Nge4 Kc6 30.Qh4 Re8 31.Qf6 Kb7 32.Qf8 Qe4 33.Qc5 Qc6 34.Nb3 Qc5 35.Nc5 Kc6 36.Rc2 Ra8 37.Ne4 Kb6 38.Bd4 Ka5 39.Rb2 Rd8 40.Ra1) 29.Qh6 Qf4 30.Qf4 Rf8 31.Qe5 (31.Qe4 Kd6 32.Nc4 Kc7 33.Qe7 Kc6 34.Na5 Kb6 35.Qb7 Ka5 36.Ra1 Na1 37.Ra1) 31...Kc6 32.Qe6 Kb5 (32...Kc7 33.Be5 Kd8 34.Ra1 Na1 35.Ra1 Rf2 36.Ra8) 33.Qb3 (33.Qd7 Ka5 34.Qa7 Kb5 35.Qb7 Ka5 36.Ra1 Na1 37.Ra1) 33...Nb4 (33...Kc6 34.Qe6 Kb5 35.Qd7 Ka5 36.Ra1 Na1 37.Ra1 Kb4 38.Ra4) 34.Qc4 Kc6 (34...Ka5 35.Qc5 Ka6 36.Qb4 Rf3 37.Ra1 Ra3 38.Ra3) 35.Qc5 Kd7 36.Qf8 (36.Qd4 Ke6 37.Rfe1 Kf7 38.Qg7) 36...Nd3 (36...Nc2 37.Qf7 Kc6 38.Rc2 Kb6 39.Qb3 Ka5 40.Ra1) 37.Qc8 (37.Qf7 Kd6 38.Nf5) 37...Ke7 38.Rc7 Kd6 39.Qd8 (39.Qd7) 39...Ke6 40.Re7 (40.Qd7) 1-0. aravind555 - Alec04 (1610), lichess.org, 2019.

6.Be2 Qb6 7.Qc1 d5 8.Nf3 Bd6 9.c4 Ne7 (9...Bg4 10.cd5 cd5 11.h3+=) 10.d4= ed4 11.Bd4 (11.Nd4 0-0=) 11...c5 12.Bb2 (12.Bc3 0-0=) 12...0-0 (12...Nbc6 13.0-0=) 13.cd5 Nd5 14.0-0 Be6 15.Rd1 Nd7 (15...Rd8 16.Na3=) 16.Na3 Qb4 (16...Qc6 17.Bb5 Qc7 18.Nc4+/–) 17.Qc2 (17.Nb5 Be5 18.Ne5 fe5+=) 17...Bb8 18.Bd3 h6 (18...Ra3 19.Ba3 Qa3 20.Bc4+=) 19.Bf5 Bf5 20.Qf5 N5b6 21.Rab1 Rf7 22.Bc1 (22.Rd3 Be5 23.Rb3 Qa4 24.Be5 fe5+=) 22...Qa4= 23.Rd2 Re7 24.Nb5 (24.Qd3 Qe4=) 24...Qe4 25.Qe4 Re4 26.h3 (26.Kf1 Kf7=) 26...Kh7 ½–½. Baeckstroem,Mikael (2255) – Cottarelli,Franco (2105), corr WSTT/3/06/Semifinal, 2008.

6.Be2 Bc5 7.Bh5 g6 8.Be2 Ne7 9.f4 d6 10.Nf3 0-0 11.Bc4 Kg7 12.fe5 de5 13.0-0 Bg4 14.Qe1 Qb6 15.Qc1 Nd7 16.Nc3 Rfd8 17.Ne4 Qc7 18.d4 Bb6 19.de5 Bf3?? 20.Rf3 Ne5+/– 21.Be5 Qe5= 22.Nf6 Nf5 23.Ng4 Qc5? 24.Qb2+– Kf8?? 25.Qf6 Ke8 26.Qf7 1–0. elsh1403 – aspen38, internet, 2011.

6.Be2 d6 7.c4 Be6 8.Nc3 Ne7 9.Nf3 Na6 10.d4 Nb4 11.a3 Na6 12.d5 Bf7 13.dc6 bc6 14.Qa4 Nc5=+ 15.Qc2 g6 16.Ne4 Ne4 17.Qe4 Qa5 18.Nd2 Rb8 19.Qc2 Bh6 20.0-0+= 0-0 21.f4?? Qc5 22.Qc3 Rfd8?? 23.fe5?? Be3?? 24.Kh1–/+ Bd2 25.Qd2 de5 26.Qc2 Kg7 27.Rac1 Rb7 28.h4? Nf5–+ 29.Qc3 Nh4 30.Bg4 Rd4 31.Bh3 Rc4 32.Qd2 g5 33.Be5 Qe5 34.Rce1 Qd5 35.Qf2 Rf4 36.Qe2 Rf1 (36...Rf1 37.Rf1 Rb3–+) 0–1. chessleon – pbram143, internet, 2007.

7.a4 Bd6 8.c4 Ne7 9.Nc3 0-0 (9...Be6 10.cd5 Nd5 11.Nf3=+) 10.Qb3 Na6 11.cd5 Nc5 12.Qc4 b5 (better 12...cd5 13.Nd5 Be6 14.Ne7 Be7=+) 13.ab5+- cb5 14.Nb5 (14.Qb5? Rb8 15.Qa5 Rb2 16.Qd8 Rd8-+) 14...Ra1 (14...Ba6 15.Qc2 Bb5 A) 16.Bb5 Ra1 17.Ba1 Qa5 (17...Nd5 18.Be5 fe5 19.Bc4+-) 18.Be5 Qb5 (18...fe5?! 19.Bc4-+) 19.Bd6 Nd3 20.Ke2 Nb4 21.d3 Nc2 22.Be7 Rc8-+; B) 16.Ra8 Qa8 17.Bb5 Nd5 18.Ne2+=) 15.Ba1 Ba6 16.d4 (16.Qa2 Qd7 17.d4 ed4 18.Nd6 Be2 19.Ne2 Nd3 20.Kf1 Qd6 21.Bd4 Qd5 22.Qd5 Nd5+-) 16...ed4 (better 16...Bb5 17.Qb5 Qa8=) 17.Qd4?? (17.Bd4 Ne4 18.Qa4 Bb5 19.Bb5 Qc7+-) 17...Nb3?? (17...Bb5!? 18.Bc3 Qb6 19.Qd2-+) 18.Qb2?? (18.Qa4!? Bb5 19.Qb3+=) 18...Na1?? (better 18...Qa5 19.Nc3 Na1 20.Ba6 Rb8-+) 19.Qa1 White gets in control 19...Qb6 (19...Bb5 20.Bb5 Bb4 21.Kf1 Qd5 22.Be2=) 20.Nc3 (20.Nd6!? Be2 21.Ne2 Qd6 22.0-0 Qd5 23.Rd1+-) 20...Bb4 (20...Bb7!? 21.Bg4 Qb4 22.Be6 Kh8+=) 21.Ba6+- (21.Qa6?? Bc3 22.Kf1 Qb1 23.Bd1 Qd1) 21...Bc3 22.Qc3 Qa6 23.Ne2 (23.Qb3 Qa5 24.Ke2 Nd5+=) 23...Nd5 (23...Rc8 24.Qd2 Qa1 25.Qd1 Qa5 26.Kf1 Nd5 27.Kg1+=) 24.Qd2 Rd8 (24...Qa1!? 25.Nc1 Qc3+=) 25.0-0+- Qb6? (25...Rd6 26.Nd4+-) 26.Nd4 (better 26.Rd1 Kf7 27.e4+-) 26...Nf4 27.Qb2?? (better 27.Rd1 Ne6 28.Qa2+-) 27...Nd3 (better 27...Qb2 28.g3 Nd3-+) 28.Qb6+- (28.Qb6 Re8 29.Qb3 Kh8 30.Qd3+-) 1-0. RichardSommer (2050) - Vladimir_Rybkin (1965), lichess.org, 2020.

7.a4 Bd6 8.c4 Ne7 9.Nf3 0-0 10.0-0 Be6 11.h3 Nd7 12.Qc2 Rc8 (12...c5 13.cd5 Nd5 14.Nc3=+) 13.Nc3 Qc7 (13...Qa5 14.d4=+) 14.Rfb1 Kh8 (14...b6 15.d4=) 15.cd5 cd5 16.Qd1 Nc5 (16...Qa5 17.Bc1 b6 18.Nb5=) 17.Ba3 (better 17.Nb5 Qb8 18.Nd6 Qd6 19.Ba3+-) 17...Rcd8?? (better 17...Qd7!?+=) 18.d4 (better 18.Nb5!? Qc6 19.Nd6 Qd6 20.d4 ed4 21.ed4+- (21.Qd4?! Rc8+-; worse 21.Nd4 Bd7+-)) 18...Ne4 19.de5 (better 19.Nb5!? Qd7 20.Nd6 Nd6 21.de5 fe5 22.Ne5+-) 19...Be5+= 20.Ne4 (20.Nb5 Qd7 21.Bb2 Nc6+=) 20...de4= (20...Ba1? 21.Nc5 Bc8 22.Ra1+-) 21.Ne5? (21.Nd4 Rfe8=) 21...Qe5 (better 21...Rd1 22.Rd1 Bb3-/+) 22.Qf1 Nd5?? (22...Rd7 23.Bb5 Rc7 24.Rd1+=) 23.Bb2?? (better 23.Bf8 Rf8 24.Rb7+-) 23...Qd6 (23...Qg5 24.Bd4=) 24.Bd4 White is in command 24...Nb4 25.Bc4 Nc6 26.Be6 (worse 26.Rb7 Bc4 27.Qc4 Na5=+) 26...Qe6 27.Rb7 White gets strong play along the open b-file 27...Nd4 28.ed4 Rd4 29.a5 Ra8 30.a6 Rd6 (30...f5 31.Qb5 Rdd8 32.Qb6 Qb6 33.Rb6+-) 31.a7+- Rdd8 32.Qb5 Qe8? (better 32...e3+-) 33.Qe8+- Re8 34.Rab1 h6?? (34...Rg8+-) 35.Rb8 Kh7 (35...Ra7 36.Re8 Kh7 37.Re4+-) 36.Re8 Ra7 37.Rbb8 (37.Re4 Kg6+-) 37...Rf7 (37...f5 38.Re5 Rf7 39.g4 fg4 40.hg4+-) 38.Re4 Kg6 39.Reb4 Rc7 40.f4 Rc1 41.Kh2 Rc5 42.Kg3 h5 (42...Ra5 43.R4b7+-) 43.h4 (43.R4b7!? Kh7+-) 43...Rc3 44.Kh2 Rc7 (44...Rc5 45.R8b7+-) 45.g3 (45.R4b5 Rf7+-) 45...f5 46.Kh3 Rc6 (46...Kh7 47.R4b5 Rf7 48.R5b6+-) 47.R8b7 (47.R4b7 Rf6 48.Re8 Kh7+-) 47...Rf6 (47...Kf6 48.Rd4+-) 48.Rc7 Kh6 49.Rbb7 g6 (49...Rg6+-) 50.Rh7 1-0. RichardSommer (2095) - Masoud_Sh (2020), lichess.org, 2020.

7.c4 Bb4 8.Qb3 Na6 9.cd5 Qb6 (9...Qd5!? 10.Qd5 cd5=) 10.dc6 (10.a3 Bc5 11.Qb6 Bb6 12.dc6 bc6+-) 10...bc6 (10...Qc6 11.e4 Be6 12.Qg3+=) 11.Nf3 (better 11.a3 Bc5 12.Qb6 Bb6 13.Nf3+-) 11...Bd2?? (better 11...Nc5 12.Qc2 Ba6+=) 12.Nbd2+- Qb3 13.ab3 (13.Nb3?! Nb4 14.Kd2 Na2+-) 13...Bb7 (13...Nc7 14.Ra8 Na8 15.Nc4+-) 14.0-0 (14.Ne4!? Kf8+-) 14...Ne7 15.Nc4 0-0 (15...Nc5+-) 16.Nd6 Nc5 17.b4 (better 17.Bc4 Kh8 18.Ba3 Ra3 19.Ra3+-) 17...Ra1 (17...Ba6 18.Nc4 Ne6+-) 18.Ra1 (18.Ra1 Ba6 19.Ba6 Na6 20.Ra6+-; 18.Bc4!? Nd5 19.Ra1 Nd7 20.Nb7 Rb8+-) 1-0. RichardSommer (1995) - govlex (2005), lichess.org, 2020.

7.c4 Bd6 8.Qb3 dc4 9.Bc4 Ne7 10.Bf7 Kd7 (10...Kf8 11.d4=) 11.Qe6 (11.Nf3 Ra6+=) 11...Kc7= 12.Qb3 Rf8 (12...Kd7 13.Nf3+=) 13.Nc3 (13.d4 Qd7+=) 13...Na6= 14.d4 (14.Ne4 Nb4 15.Bc4 Bf5=+) 14...ed4=+ 15.ed4 b5 (better 15...Nb4!? 16.Bc4 Bf5=+) 16.Rc1+= Kb7 17.Nf3 (17.Nge2+=) 17...Qb6 Black plans b4 (better 17...Bg4!?=) 18.0-0+/- Bg4 19.Nd2 (19.Ne4 Bf4 20.Rc3 b4+/-) 19...b4 (19...Bf4 20.Rfe1 Nf5 21.Ncb1 Nd4 22.Bd4 Qd4 23.h3=) 20.Na4 (20.Nc4 Qc7 21.Nd6 Qd6+-) 20...Qb5 (20...Qc7 21.h3 Bf5 22.Rfe1+/-) 21.Nc4 (21.Ne4 Bf4 22.g3 Bb8+-) 21...Bc7 22.Nc5 (better 22.Ne3 Be2 23.Rfe1+-) 22...Nc5= 23.dc5 Rf7 24.Nd6 Bd6 25.Qf7 Bc5 26.Rc5?? (26.Rfe1 Rd8 27.Qg7+/- (27.Re7?! Be7 28.Qe7 Rd7=+)) 26...Qc5-+ 27.Rc1 Qd6 28.Re1 (28.Qg7 Rg8 (28...Ra2?! 29.Bf6 Qd7 30.Be7-/+) 29.Qh7 Bf3-+) 28...Bd7 29.Re7?? (29.Qg7 Nf5 30.Qf7-+) 29...Qd1 30.Re1 Qe1 0-1. ClayPigeons (2135) - duncan2020 (2095), Rated Bullet game, lichess.org, 2020.

7.Bh5 g6 8.Be2 Bd6 (8...Qb6 9.Qc1+=) 9.d3 (9.Nf3 Qb6 10.Qc1 Bg4+=) 9...Be6 10.Nf3 Qb6 11.Qc1 Ne7 12.0-0 Nd7 13.c4 dc4 (13...0-0 14.d4 c5 15.cd5 Nd5 16.de5 Ne5 17.Rd1=) 14.dc4= 0-0 15.Rd1 Qc7 16.Nbd2 Nc5 17.Nb3 Nb3 (17...Rfd8 18.Nc5 Bc5 19.Rd8 Rd8 20.Ba3 Ba3 21.Qa3=) 18.ab3 b6 19.Nd2 Bb4 (19...Ra1 20.Qa1 Nf5 21.Ne4+=) 20.Ra8 (20.Ne4 Ra1 21.Qa1 Bf5+=) 20...Ra8= 21.Ne4 Kg7 22.f4 Bf5? (better is 22...Ra5+=) 23.Nf6!+– Kf6 Decoy theme: f6 (23...Qa7 24.Be5 Qa5+–) 24.Be5 A double attack 24...Qe5 25.fe5 Ke5 (25...Kg7 26.g4 Be6 27.Qb2+–) 26.g4 (better is 26.Qb2 Ke6 27.g4+–) 26...Be6 (26...Ra2 27.gf5 Re2+–) 27.Qb2 Ke4 (27...Bc3 28.Qc3 Ke4 29.Qd4) 28.Qd4 1–0. Van Rooijen,Peter (1855) – Grosdemange,David (2070), remoteschach.de, 2005.

5.d4= ab5 6.Bb5 c6 7.Bd3 Be6 8.c4 Nd7 9.Qc2 g6 10.Nf3 Ne7 11.Nbd2 Bg7 12.0-0 0-0 13.e4 ed4 14.Nd4 Bf7 15.N2b3 c5 16.Nb5+= Nb6 17.Be2 Ra4 18.Bc3 Nec8 19.Ba5 Qe7 20.Nc3 Rc4 21.Rae1 Qe8 22.Rd1 Na4 23.Bc4+/– Bc4 24.Rfe1 Nc3 25.Bc3 Be6 26.Bd2 b5 27.Bf4 Qd7 28.Rd2 Qe7 29.Red1 c4 30.Nd4 Bd7 31.Rb1 Qe8 32.Re2+/– Rf7 33.a4!+– ba4 34.Qc4 g5 35.Bg3 Bf8 36.Rb8 Kh8 37.f3 g4 38.Rc2 gf3 39.gf3 a3 40.Rc8 Bc8 41.Qc8 Qa4 42.Qc4 Qc4 43.Rc4 Ra7 44.Rc1 a2 45.Ra1 Ra6 46.Nb5 f5 47.Nc3 Ra3 48.Be1 fe4 49.Ra2 Ra2 50.Na2 ef3 51.Kf2 d5 52.Kf3 Kg8 53.Nc3 Bb4 54.Ke2 d4 55.Nb5 d3 56.Kd1 Bc5 57.Kd2 Bb4 58.Nc3 Kf7 59.Kd3 Kg6 60.Bg3 Kf5 61.Nb5 Kg4 62.Ke4 h5 63.Nd6 h4 64.Bf4 h3 65.Nc4 Kh5 66.Kf5 Be7 67.Nb2 Bg5 68.Bd6 Kh6 69.Nd3 Bh4 70.Be5 Kh7 71.Nf4 Bg3 72.Nh3 Be5 73.Ng5 Kg7 74.Ne6 Kh6 75.Ke5 Kg6 76.Nf4 Kg5 77.Ng2 Kg6 78.Ke6 Kg7 79.Kf5 Kh6 80.Nf4 Kg7 81.Kg5 Kf7 82.Ne6! Kg8 (82...Ke6 83.Kg6) 1–0. COMP – COMP, 2001.

5.d4= ab5 6.Bb5 c6 7.Bd3 Be6 8.c4 e4 9.Be4+= Bc4 10.Qc2 Ra2 11.Ra2 Ba2 12.Bh7 Ne7 13.Nd2 Bf7 14.Bd3 Na6 15.Ba3 b5 16.Ngf3+= Qd7 17.0-0 g6 18.Ra1 Nc7 19.Ne4 Ned5 20.Rc1. COMP – COMP, 2001.

5.Bb5 Ra5 6.Bc4 Nh6 7.Bc3+= Ra8 8.Qh5 g6 9.Qe2 Bc5 10.h3 c6 11.Nf3 b5 12.Bb3 Ba6 13.d3 d5 14.ed5+/– b4 15.Bd2 Nf5+= 16.0-0?? Ng3–/+ 17.Qe1 Nf1 18.Kf1 Qe7 19.Kg1 Bb7 20.dc6 Bc6–/+ 21.Be3 Bf3–+ 22.gf3 Nc6 23.c3 Kf8 24.c4? Nd4 25.Nd2 Qe6 26.Rc1 Qh3 27.Qf1 Qf5 28.Bd4 Bd4 29.Qe2 Qh3 30.Ne4 f5 31.Nd6 Qg3 32.Kf1 Qf4 33.Rd1 Qh2 34.Ke1 Bc3 35.Rd2 Qh1 (35...Qh1 36.Qf1 Bd2 37.Ke2 Qf1 38.Kf1 Bf4–+) 0–1. mic (2180) – marv (2340), net–chess.com, 2008.

5.Bb5!? Bc5 6.d4 Bd4 7.Bd4 ed4 8.Qd4 =.

5.d4 ed4=+ 6.Bd4 c5 (better is 6...b4=+) 7.Bc5 Ra4 (7...Bc5 8.Qh5) 8.Bd4 Nc6 9.Nf3 Nd4 10.Nd4 Qc7 (10...Qa5 11.c3 b4+=) 11.Qh5 (11.c3 Qf4 12.Nd2 Ra3+/–) 11...g6+= 12.Qd1 Bc5 (12...Qe5!? 13.c3 Qe4 14.Qe2 Qe2 15.Be2 b4=+) 13.c3+= Bd4 (13...Qe5 14.Qc2+/–) 14.cd4+/– Qa5 15.Qd2 Qd2 (15...Qa7 16.Qc3 Ne7 17.Bb5 Rd4 18.Nd2+=) 16.Nd2 Ne7 17.Bb5 (17.Nb3 b4+/–) 17...Rd4 18.Rd1 (18.Rc1 Nc6+/–) 18...Nc6 19.0-0 Rf8 20.Nc4 Ke7+= 21.f3 f5 22.Nb6 fe4+= 23.fe4 Rd1 24.Rd1 d6 25.Nd5 Kf7 26.Rf1 Kg7+= 27.Rf8 Kf8 28.a4 Nd4 29.Kf2 Be6 30.Nf4 Ke7 31.Ke3 Nc2 32.Kd3 Bb3 33.Kc3+/– Na1 34.Kb2 Bc2? 35.Bd3 Bd3 36.Nd3 Kf6 37.a5 Nb3 38.Kb3 Ke6 39.Kc4 g5 40.Kb5 Kd7 41.Kb6 Kc8 42.Nb2 Kb8 43.Nc4 d5 44.ed5 1–0. SuperConstellation – GrandMasterChess, 1994.

5.d4 Bd6 6.Bb5 c6 7.Bc4 Nh6 8.Qh5 Ke7 9.Bc1 Qa5 10.Bd2 Bb4 11.c3 Ba3?? 12.Bh6+– g6 13.Qe2 b5 14.Bb3 d5 15.ed5 cd5 16.Bd5 Ra7 17.Bd2 Rc7 18.c4 Bb4 19.Bb4 Qb4 20.Qd2 Qd6 21.Bf3 ed4 22.Ne2 Rc4 23.0-0 Qe5 24.Re1 Kf7 25.Na3 Ra4 26.Nc2 Ba6 27.Ned4 Qc7 28.Rac1 Qd8 29.Qc3 Rc4 30.Qb3 Nc6 31.Nc6 Qd7 32.Re7 Qe7 33.Ne7 Ke7 34.Ne3 Rc5 35.Rc5 Kd7 36.Qd5 Ke7 37.Rc7 Kf8 38.Qf7 (38.Qd8) 1–0. iczker – wz14a, internet, 2011.

5.Be5 fe5 6.Qh5 Ke7 7.Qe5 Kf7 8.Bb5 Qe7 (8...Nc6 9.Bc4 d5 10.Bd5 Kg6 11.Qg3 Kh6 12.Bc6 bc6 13.Qe3 Kh5 14.Ne2=) 9.Bc4 Ke8 10.Qc7 (10.Nf3 Nc6 11.Qe7 Be7–/+) 10...Qe4–+ 11.Kf1 (11.Kd1 Nc6 12.Bg8 Qg2–+ (12...Rg8?! 13.Nf3 Qg4 14.Qg3–+)) 11...Nc6 12.Bd3 Qd4 13.Nc3 Bd6 14.Re1 Nce7 (better is 14...Kf7 15.Nb5 Bc7 16.Nd4 Nd4 17.Bc4 Kf8–+) 15.Nb5 (15.Qc4 Be5 16.Qd4 Bd4 17.Nb5=+) 15...Bc7 16.Nd4 0–1. Kreuzer,Uwe – Zapfl, Active chess, 1991.

5.f4 c6 6.f5 d5 7.ed5? Qd5 8.Qh5 Kd7 9.Nf3 Ra2 (9...Ra2 10.Nc3 Ra1 11.Ba1 Qc5–/+; 9...Qe4 10.Kd1–/+) 0–1. wood – AlarmimPo, Live Game Caissa's Web, 2005.

6.Bc4 Na6 7.Nc3 b5 8.Bb3 Nc5 9.Nf3 b4 10.Ne2 d5 11.ed5 cd5 12.0-0 Ne7.

6.Bc4 Na6 7.d4 d5 (7...ed4 8.Bd4 d5 9.ed5 b5 10.Bd3 Qd5 11.Nf3 Bb4 12.c3 Be7) 8.ed5 cd5 9.Bb5 Kf7 10.de5 Qa5 11.Nc3 Bb4 12.Qd5 Be6.

6.Bc4 Na6 7.Nf3 d5 (7...Nc5 8.Nc3 b5 9.Bb3 b4 10.Ne2 d5 11.ed5 cd5 12.0-0 Ne7) 8.ed5 cd5 9.Bb5 (9.Bb3 Nc5 10.Nc3 Nb3 11.ab3 Ra1 12.Qa1 d4) 9...Kf7 10.0-0 (10.Nc3 Nh6 11.Be2 Be6 12.0-0 Nf5) 10...Nh6 11.d3 (11.Re1 Nc7 (11...Qb6 12.Nc3 Nc7) 12.Bf1 (12.Nc3 Nb5) 12...Nf5–/+ (12...Bd6=); 11.Nc3 Nf5 12.Re1 Nc7) 11...Nc7+= 12.c4 (12.Nc3 Bb4) 12...Nb5 13.cb5 Be6 14.Re1 Bd6 15.d4 e4 16.Nfd2 Re8 17.Nc3 Kg8 18.Kh1? (better is 18.Nb3!?+=) 18...Ng4–+ 19.Qe2 Nh2 20.a4 f5 21.Nf1?? (21.Qh5–+) 21...Nf1 22.Rf1 (22.g3 Ng3! 23.fg3 Bg3 24.Rf1 Qh4 25.Kg1–+) 22...Qh4 0–1. Noack,Thomas (2000) – Teske,Heike (2170), RSX7E – A00 – Sokolsky–2, 2009.

6.Bc4 Na6 7.Bg8 Rg8 A) 8.Nc3 Bc5 (8...d5 9.ed5 cd5 10.Nf3 d4 11.Nb5 Nc5 12.Ba3 Be6) 9.Nh3 g6 10.0-0 Kf7 11.Re1 d6 12.Na4 Bh3; B) 8.d4 ed4 (8...Qb6 9.Bc3 ed4 10.Bd4 Qb4 11.c3 Qb2 12.c4 Qb4) 9.Bd4 Qe7 (9...d5 10.Qh5 g6 11.Qh7 Rg7 12.Qh4 Rf7) 10.Qh5 (10.Nc3 d5 11.Nge2 de4 12.0-0 Bg4) 10...g6+= 11.Qh4 Qb4 12.Bc3 Qc4.

6.Bc4 Bc5 7.Bg8+= Rg8 8.Qh5 Kf8 9.Bc3 (9.Qh7 Qb6 10.Bc1 Bf2 11.Kf1 d5=) 9...Qb6+= 10.Nh3 (10.Nf3 Bf2 11.Ke2 Rh8–/+) 10...d5–/+ 11.ed5 Bh3 (11...cd5 12.Qh7 d4 13.0-0–/+) 12.Qh3+= Bf2 (12...cd5!? 13.0-0 d4 14.Qh7 Kf7–/+) 13.Ke2= Na6 (13...cd5 14.Rf1 (14.Qh7? Bc5–+) 14...Bc5 15.Qh7–/+) 14.Rf1 (14.dc6!? bc6 15.Qh7+/–) 14...Bc5 15.dc6 bc6 (15...Qc6!? 16.Qh7 Qg2 17.Ke1 Ke7–/+) 16.Qh7+/– Qb5 17.d3 (better is 17.Ke1+/–) 17...e4?? (better is 17...Qa4 18.Kd1 Qg4 19.Rf3 Ke7+=) 18.Bf6!+– ed3 19.cd3 Re8 20.Kd1 Qa4 21.Kc1 Be3 (21...Re1 22.Re1 gf6+–) 22.Kb2 (better is 22.Nd2 Bf4 23.Bg5 Re1 24.Re1 Bg5 25.Rf1 Bf6 26.Nc4+–) 22...Rb8 23.Kc3 Qb4 (better is 23...Rb3! 24.ab3 Qa1 25.Kc4 gf6–/+) 24.Kc2= Qa4 25.Kc3 Qb4?? (better is 25...Rb3! 26.ab3 Qa1 27.Kc2 gf6–+) 26.Kc2= Qc5?? (better is 26...Qa4 27.Kc3=) 27.Bc3 (better is 27.Nc3 Bf2 28.Bh4 Nb4 29.Kd1 Nd3 30.Qd3 Qh5 31.Qe2 Qe2 32.Ne2+–) 27...Ke8?? (27...Ke7 28.Kd1 Nb4+–) 28.Qg8 Kd7 29.Qg7 Qe7 30.Rf7 (30.Rf7 Bc5 31.Re7 Be7 32.Qg4 Ke8 33.Qe6+–) 1–0. Fredek (2090) – Guest432302, Freundschaftspartie, 5m + 0s, 2005.

6.Bc4 d5!? 7.ed5 cd5 8.Bb5 Bd7 9.Bd7 Nd7 =+.

6.Be2 d5 7.ed5 cd5 8.Nf3 (8.d4 Nc6 9.de5 Qb6–/+ (9...Ne5?! 10.Nf3=)) 8...Bg4 (8...Qb6 9.Bc1–/+) 9.h3 Bf3 (9...Be6 10.Bb5 Nc6 11.Qe2=+) 10.Bf3 g6 (10...Qb6 11.Bc1 e4 12.Bh5 g6 13.Bg4=+) 11.Qe2 (11.Nc3 Ne7=) 11...e4 (11...Ne7 12.Qb5 Nbc6 13.c4= (13.Qb7?? Rb8 14.Qa6 Rb2–+)) 12.Qb5 (12.d3!? Qb6 13.c4 Bb4 14.Kf1+=) 12...Qd7 13.Be2 Qb5 14.Bb5 Kd8 (14...Nc6 15.Nc3 Nge7 16.d3 ed3 17.Bd3=) 15.0-0 (better is 15.Nc3!? Ba3 16.0-0-0+=) 15...Nc6= 16.c4 Ra5 17.Bc6 bc6= 18.Bc3 Ra4 19.cd5 cd5 20.a3 d4 21.Bb2 Bc5 22.Rc1 Ra5 23.Rc4+/– e3? 24.de3+– de3 25.fe3 Be3+= 26.Kh1 Rc5 27.Ra4 Bc1 28.Ra8 Ke7 29.Bd4 Rd5 30.Ra7 Kf8 31.Bg1 Ne7?? 32.a4 Nf5+= 33.Ra8 Kg7= 34.Rh8 Kh8 35.a5 Bf4 36.g3 Ng3 37.Kg2 Nf5 38.a6 Nh4 39.Kf2 Rd8 40.Ra4 g5 41.a7 Ra8 42.Nc3 Bd6 43.Kf1 Nf3 44.Nb5 Be5 45.Kg2 Nh4 46.Kf1 Nf3+/– 47.Bf2 h5 48.Kg2 Nd2? 49.Bg3 Bg3 50.Kg3 h4 51.Kg4 Nb3 52.Nc7 Nc5 53.Ra1 Nb3 54.Na8 Na1 55.Nb6 Nb3 56.a8Q Kg7 57.Qb7 Kg6 58.Qe4 Kf7 59.Nd5 Kg8 60.Nf6 Kf7 61.Nh5 Nc5 62.Qd5 Ne6 63.Qf5 Ke7+– 64.Qh7 Kd6 65.Nf6 Ke5 66.Qh8 Kd6 67.Ne4 Kd5 68.Ng5 Ng5 69.Kg5 Ke4 70.Qh4 Kf3 71.Qf4 Ke2 72.h4 Kd3 73.h5 1–0. pinecrest1981 – StillBill, Live Game Caissa's Web, 2004.

5.Nc3 d4=+ 6.Nd5? c6–+ 7.c4 cd5 8.ba6 Ra6 9.c5 Bc5 10.Ba6 Na6 11.Qc2 Nb4 12.Qc5 Nd3 13.Ke2 Nc5 14.Nf3 Ne4 15.Rhc1 Bg4 16.h3 Bf3 17.gf3 Nd6 18.Rc5 Qb6 19.Ba3 Qa6 (19...Qa6 20.Ke1 Qa3 21.Rd5 Qf3 22.Rd6 Qe4 23.Kd1 Qh1 24.Ke2 Qa1–+) 0–1. icewater – Apracs, Caissa.com, 2004.

5.ed5 Qd5 =.

4.a3 Ba5 5.e3 Ne7 6.Bc4 (6.Qh5 g6 7.Qf3 Rf8=) 6...d5+= 7.Bb3 0-0 8.Nf3 c6 9.a4 (9.bc6 Nbc6 10.0-0 Bg4+=) 9...Bg4 (9...e4 10.Nd4+=) 10.h3 Bh5 11.g4 (11.e4 Kh8 12.Qe2 Ng6–/+) 11...Bg6–/+ 12.0-0 f5 (12...Nd7 13.d4 e4 14.Nh4+=) 13.Nh4 (better is 13.Ne5!? Qd6 14.c4+/–) 13...fg4 (13...Nd7 14.d4+=) 14.Ng6 Ng6 (worse is 14...hg6 15.Qg4 Nd7 16.f4+=) 15.Qg4 Bb6 (15...Kh8 16.c4+=) 16.Qe6 (16.c4!?=) 16...Kh8+= 17.Be5 (17.c4 Nd7 18.bc6+=) 17...Qg5?? (better is 17...Re8 18.Bg7 Kg7–/+) 18.Bg3+= cb5? (better is 18...Bc7! 19.Qg4 Qg4 20.hg4 Bg3 21.fg3 Nd7+=) 19.ab5+– (19.Bd5?! Nf4 20.ef4 Qg3 21.Kh1 A) 21...Bf2?? 22.Ra3 (22.ab5?! a6+–) 22...Qh4 23.Bb7+– (23.ab5?! a5+–); B) 21...Qf4+=; 19.Qd5?! Qf6 20.Nc3 ba4+–) 19...Nh4 (better is 19...Nf4 20.Qg4 Qg4 21.hg4 Ne2 22.Kg2 Ng3 23.Kg3 d4+–) 20.Bd5 Bc7 21.Qg4?? (better is 21.Nc3 a5 22.Qg4 Qg4 23.hg4 Bg3 24.fg3+–) 21...Qg4?? (better is 21...Qd5 22.Qh4 Bg3 23.Qg3 Qb5+/–) 22.hg4+– Bg3 (22...Nf3 23.Bf3 Rf3 24.Bc7+–) 23.fg3 Rf1 24.Kf1 Nd7 25.Bb7 (25.gh4 a6+–) 25...Rb8 (25...Rf8 26.Ke2 Ng6 27.d4+–) 26.Bc6 Ne5 (26...Ng6 27.Bd7 Ne5 28.Ra7+–) 27.d4 (better is 27.gh4 Rb6 28.Nc3 Nc6 29.bc6 Rc6 30.Ra7 Kg8+–) 27...Nc6 28.bc6 (28.gh4?! Rb5 29.c4 Rb2+–) 28...Nf3 (28...Ng6 29.c7 Rc8 30.Ra7+–) 29.Ke2 Ng5 30.Nd2 (30.Ra7 Ne4+–) 30...h6 (30...Ra8 31.Nc4 Kg8 32.Nb6+–) 31.Ra7 Rb2 (31...Rc8 32.d5 Kg8 33.c7+–) 32.Kd3 (better is 32.c7 Rc2 33.Kd3 Rc7 34.Rc7 Kg8+–) 32...Nh3 (32...Rb8 33.Nc4 Rc8 34.d5+–) 33.c7 (better is 33.Ra8!? Kh7 34.Ne4 Rb6+–) 33...Nf2 34.Ke2 Rc2 35.c8Q! Rc8 36.Kf2 Kh7 37.Ra6 (37.e4 Kg6+–) 37...Rc2 38.Ke2 Rc1 (38...Kg8 39.Ra7+–) 39.d5 1–0. GuestPFGG – GuestSBNS, freechess.org, 2017.

4.a3 Bc5 5.c4 Bb6 6.e4 d6 7.Qh5 g6 8.Qe2 Be6 9.Nf3 Qd7 10.h3 Qf7 11.d4 c5 12.d5 Bd7 13.Qd3 g5 14.Be2 Ba5 15.Nbd2 a6 16.Bc3 Bb6 17.0-0-0 a5 18.a4 Bc8 19.Nh2 h5 20.Bf1 Ne7 21.g3 f5 22.f4 g4? 23.fe5+– de5 24.Be5 Nd7?? 25.Bh8 Ne5 26.Be5 Ng6 27.Bf4 Bc7 28.Bc7 Qc7 29.Qe3 f4 30.gf4 Nf4 31.hg4 Bg4 32.Ng4 hg4 33.Rh8 Ke7 34.Rh7 Kd8 35.Rc7 Kc7 36.Qf4 Kd7 37.Qg4 Ke7 38.Bh3 Rf8 39.Rg1 Rf7 40.Qd7 Kf8 41.Qd8# 1–0. chevin – rutcho, Live Game Caissa's Web, 2004.

4.a4 Ne7 5.e3 0-0 6.Nf3 d5 7.c4 (7.Be2 a6=+) 7...d4 (7...e4!? 8.Nd4 c5=+) 8.ed4= ed4 (8...e4 9.Ng1=) 9.Nd4+= c5 10.Nf3 (10.Nc2 Ba5+=) 10...Nf5 (10...Ng6!? 11.Be2 Nf4=) 11.Be2+= Re8 12.0-0 Nd7 13.d4 Nb6 (13...cd4 14.Nd4 Ne5 15.Nf3+=) 14.d5 (14.a5 Nd7+-) 14...Nd6 15.Nc3 (better 15.Nfd2+-) 15...Nbc4-/+ 16.Bc4 Nc4 17.Qb3 Nb6 (better 17...Bc3!? 18.Qc3 Qd5-/+) 18.a5= Nd7? (better 18...Bc3!? 19.Qc3 Nd5 20.Qc5 b6=+) 19.d6+- Kh8 (19...Kf8 20.Nd5 Ba5 21.Ra5 Qa5 22.Nc7+-) 20.Nd5 Ne5 (20...Nf8 21.Nc7 Be6 22.Qd3+-) 21.Ne5 (21.Be5 fe5 22.Nc7 e4+-) 21...fe5 (21...Be6 22.Rfd1 fe5+-) 22.Rad1 (better 22.Nc7!? Rb8 23.b6 ab6 24.Ne8 Qe8 25.ab6+-) 22...Be6 (22...Ba5 23.Ne7 Re7 24.de7 Qe7 25.Qa2+=) 23.Qg3 (23.Be5!? Qd7 24.Qg3 Bd5 25.Rd5 Ba5 26.Rc5+-) 23...Bd5+= 24.Rd5 Increasing the pressure on the isolated pawn on e5 24...Qf6 (24...Qd7 25.Be5 (worse 25.Re5 Re5 26.Be5 Ba5+=) 25...Ba5 26.Rc5+-) 25.Be5+- Qg6?? (better 25...Qf7+-) 26.Qg6 hg6 27.d7 Red8 28.Rfd1 (better 28.Bc7+-) 28...b6 (28...Ba5 29.Rc5 Kg8 30.Bf4+-) 29.a6 (better 29.Bc7 Kg8 30.ab6 ab6 31.Bb6+-) 29...Rab8 (29...Kg8+-) 30.Bb8 Rb8 31.d8Q Rd8 32.Rd8 Kh7 33.R8d7 g5 34.Ra7 g4 35.Rb7 g3 36.hg3 Ba5 (36...Bc3 37.a7 Bf6 38.a8Q Bb2 39.Qe8 Kh6 40.g4 g6 41.Qe3 g5 42.Qe6 Bf6 43.Qf6) 37.Rdd7 (37.a7 Kg6 38.a8Q Bd2 39.Rb6 Kh7 40.Qe4 Kg8 41.Qe8 Kh7 42.Qg6 Kg8 43.Rb8) 37...Kg6 38.Rg7 (38.a7 Kh6 39.a8Q Kg6 40.Qe8 Kf6 41.Rg7 c4 42.Rbf7) 38...Kf5+- 39.Rbf7 (39.Rgf7 Ke4 40.Rbd7 Bd2 41.a7 Ke5 42.a8Q c4 43.Qd5) 39...Ke5 40.a7 Kd4 41.a8Q Kc3 (41...Kc4 42.Qe4 Kb3 43.Qb1 Ka4 44.Rg4 Bb4 45.Ra7 Kb5 46.Qd3 c4 47.Qc4) 42.Qf3 (42.Qe4 Kb3 43.Qb1 Ka4 44.Rg4 Bb4 45.Ra7 Kb5 46.Qd3 c4 47.Qc4) 42…Kb4 (42...Kb4 43.Rg4 c4 44.Qd3 Ka4 45.Rc4 Kb5 46.Rd4 Kc5 47.Rc7; 42...Kc2 43.Qe4 Kb2 44.Qe2 Bd2 45.Qd2 Kb3 46.Rf3 Kc4 47.Qd3 Kb4 48.Qb3 Ka5 49.Ra7) 0-1. RichardSommer (1925) - yonzon (1980), lichess.org, 2020.

4.c4 d6 5.Nc3 Bc3 6.Bc3 c5 7.e4 Ne7 8.g3 0-0 9.Bg2 Be6 10.d3 Qc8 (10...a6 11.ba6 Ra6 12.Ne2+=) 11.Ne2 Bh3 12.0-0 Ng6 (12...Bg2 13.Kg2 Qe6 14.Qd2=) 13.f4 Bg4 14.f5 Be2 15.Qe2 (15.fg6?? Bd1 16.gh7 Kh7 17.Rad1 a6–+) 15...Nh8 16.g4 Nf7 17.h4 (17.a4 a6+=) 17...h6 18.Bh3 Qd8 19.a4 Nd7 20.Kh2 Re8 21.Bd2 Nf8 (21...a6 22.Bg2+=) 22.a5 Nh7 23.Rg1 Kf8 (23...a6 24.b6+=) 24.a6+/– b6 25.Raf1 Ke7 ½–½. Melich,Jindrich (2170) – Muller,F, Prague Cedok op, 1996.

4.e3 c5 5.Qh5 (5.c3!? Ba5 6.Bd3=) 5...g6=+ 6.Qd1 d5 7.c3 Ba5 8.a4 Bf5 9.Be2 d4 (9...Ne7 10.Nf3=+) 10.Bg4 (10.ed4 cd4 11.cd4 ed4=) 10...Bb1 (better is 10...de3!? 11.de3 Qd1 12.Bd1 Nd7=+) 11.Rb1+= f5 12.Be2 d3 13.Bf3 e4 14.Bh5? (14.c4 Nf6 15.Be5–+) 14...Qf6?? (better is 14...Nf6 15.Bf3 c4–+) 15.c4+– Qg5 16.Nh3?? (better is 16.Bh8 Qg2 17.Bf3 ef3 18.Qf3 Qf3 19.Nf3+–) 16...Qg2=+ 17.Rg1 Qh3 18.Bh8 Qh2 19.Rf1? (better is 19.Kf1–+) 19...gh5 (19...Qh5 20.Qh5 gh5 21.Rh1–+) 20.Qb3 b6 21.Qb2 Nd7 22.Qg7 Ndf6 23.Qb7 Rd8 24.Qc6 Ke7 25.Qc7 Rd7 26.Qh2+– Ke6 27.Bf6 Nf6 28.Rg1 Ng4 29.Rg4 fg4 30.Qf4 Rf7 31.Qe4 Kf6 32.Qc6 Kg7 33.Qe4 h6?? 34.Qd3 h4 35.Qe4 h3 36.Qe5 Kg6 37.Qg3 Kg5 38.f4 (38...Kf5 39.e4 Ke4 40.Qe3 Kf5 41.Qe5 Kg6 42.Qe6 Rf6 43.Qg4 Kf7 44.Qd7 Kf8 45.Qh3+–) 1–0. TIROLOCO – chessdv8, Live Game Caissa's Web, 2004.

4.e3 d5 5.Qh5 g6 6.Qh4=+.

4.e3 Ne7 5.Qg4 Ba5 6.Qg7 Rf8 7.Qh7 d5 8.Qh5 Rf7 9.Nf3 Bf5 10.Bd3 e4 (10...Bd3 11.cd3 Nd7 12.Bc3 Bc3 13.Nc3+-) 11.Nh4 Qd7 (better 11...ed3 12.Nf5 Nf5 13.Qf5 dc2+-) 12.Be2 Qe6 (12...Be6 13.Bf6 Bb4 14.Bc3+-) 13.Qh8 (13.Nf5 Qf5 14.Qf5 Nf5+-) 13...Kd7 14.Bh5 (worse 14.Nf5 Qf5 15.h4 c5+-) 14...a6 (14...Rh7 15.Qe8 Kd6 16.Ba3 Ke5 17.f4 ef3 18.Nf3 Ke4 19.0-0+-) 15.Bf7 (15.Nf5!? Nf5 16.ba6 ba6+-) 15...Qf7 16.Nf5 Nf5 17.a4 (17.ba6 ba6 18.Bf6 c6+-) 17...ab5 (17...Ng7 18.ba6 ba6 19.0-0+-) 18.ab5 (worse 18.Bf6 ba4 19.Qd8 Ke6+-; 18.Qf6?! Qf6 19.Bf6 ba4+-) 18...Bd2 (18...Nd6 19.b6 Ne8+-) 19.Nd2 Ra1 20.Ba1 Qg6 (20...Qe8 21.Qh7 Ke6 22.Qc7+-) 21.Qb8 Qg2 22.Rf1 Qh2 23.Qb7 Nh4 (23...Qd6 24.Rh1 Ne7 25.Rh7+-) 24.Qd5 Kc8 25.Qa8 (25.Ne4 Nf3 26.Ke2 Ne5 27.Nf6 Qh5 28.Nh5 Nf3 29.Qa8 Kd7 30.Nf6 Ke6 31.Qd5 Ke7 32.Qd7 Kf8 33.Nh7 Kg8 34.Qg7) 25...Kd7 26.Ne4 Nf3 27.Ke2 Ng1 28.Rg1! Qg1 29.Nf6 Ke6 30.Qe8 Kf5 31.e4 Kf4 (31...Kg5 32.Qh5 Kf4 33.Be5) 32.Qe5 1-0. onur604 (2320) - Steinbron (2015), lichess.org, 2020.

4.e4 d5 5.a3 Ba5 6.ed5 Qd5 7.Nc3 Bc3 8.Bc3=.

4.e4 Ne7 5.Bc4 (5.Qh5 g6 6.Qh4 g5 7.Qh5 Ng6+=) 5...c6 (5...d5 6.ed5 Nd5 7.Qh5 g6 8.Qf3=) 6.Qh5 Ng6 (6...g6 7.Qf3 d5 8.Bb3= (8.Qf6? Rf8 9.Qe5 dc4–+)) 7.f4 (7.bc6 bc6 8.Nc3 Ba6+=) 7...d5 (7...cb5 8.Bd3 0-0 9.Ne2+=) 8.ed5 (8.Bd3 A) worse is 8...ef4 9.ed5 0-0 10.dc6+= (worse is 10.Bg6 hg6 11.Qf3 Re8 12.Kd1 Qd5–/+); B) 8...0-0 9.fe5 Nf4+=) 8...cd5 9.Bb3 0-0 10.Ne2 Kh8 (10...Qd7 11.Qf3 Rd8 12.fe5 fe5 13.Nbc3+=) 11.0-0 (worse is 11.fe5 fe5 12.Rf1 Rf1 13.Kf1 Nd7+=) 11...Bd7 12.fe5 fe5 13.Nbc3 (13.Rf8 Bf8 14.Nbc3 Be6=) 13...Rf1 (13...Qb6 14.Kh1 d4 15.Nd5+/–) 14.Rf1 Be6 (14...Qc8 15.h3 Qc5 16.Rf2 Bb5 17.Nb5 (worse is 17.Nd5 Bd2 18.Nd4 Be1–/+) 17...Qb5 18.a3=) 15.Kh1 (better is 15.d4!?+/–) 15...Nd7 16.a3 (worse is 16.Bd5 Bc3 17.Nc3 Nf6 18.Rf6 Qf6–/+) 16...Ba5 17.d4 (worse is 17.Bd5 Bc3 18.Nc3 Nf6 19.Rf6 Qf6–/+) 17...Nf6 Black prepares the advance e4 18.Qg5 e4 19.h4 Increases the pressure on d5 19...Bc3 (19...Nf8 20.Nf4 h6 21.Ne6 Ne6 22.Qe3=) 20.Nc3 Nf8 21.h5 h6 22.Qh4 Ng4 23.Qd8 Rd8 24.Bd5 Bd5 25.Nd5 Rd5 26.Rf8 Kh7 27.c4 Rh5 28.Kg1 Ne3 29.c5 Nd5 (29...Rg5!? 30.Rf2 Rd5=) 30.Re8+/– e3 31.Bc1 Nc7 (31...Nc3 32.Be3 Rf5 33.g4+/–) 32.Re3 (32.Re7 Nb5 33.Be3 Rd5 34.Rb7 Nd4 35.Bd4 Rd4 36.Ra7 Rc4+/–) 32...Nb5 33.Bb2 Rd5 34.Re7 Kg6 (34...Nd4 35.Rb7 a6 36.c6+–) 35.Rb7 Nd4 36.Ra7 Ne2 37.Kf2 Rc5 38.Rg7 (38.Ke2?! Rc2 39.Kf3 Rb2+=) 38...Kf5 39.Ke2 Rc2 40.Kd3 Rb2 41.Kc4 Kf6 42.Rg3 Ke7 (42...h5 43.a4+/–) 43.a4 Kd7 44.Rg6 h5 45.g3 (45.Rg5 h4+–) 45...Kc7 46.a5 Kb7 47.Rb6 Rb6 48.ab6 Kb6 49.Kd5 Kc7 50.Ke6 Kd8 51.Kf7 Kd7 52.Kg6 Ke7 53.Kh5 Kf6 54.g4 Kf7 55.Kh6 Kg8 56.g5 Kf7 57.Kh7 1–0. Nikishin,Sergey (2050) – Popov,Andrey (2065), Chess Tournament, 2012.

5.Qh5 g6 6.Qh4 Ba5 7.Bc4 Bf5 8.Nf3 Bc2?? 9.0-0?? d5=+ 10.Be2 Nd7 11.Nc3 Nb6 12.Rfc1 Bf5 13.d3 Qd7 14.Rc2 0-0-0 15.Rac1 g5 16.Qg3 h5 17.Nd1 h4 18.Nh4 gh4?? 19.Rc7+/– Qc7 20.Rc7 Kc7 21.Qf3?? Ne7?? 22.e4= de4 23.de4 Bg6 24.Qf6 Bb4?? 25.Be5+– Kc8 26.Bg4 Nd7 27.Ne3 Rhf8 28.Bd7 Kd7= 29.Qh4 Bd6 30.Qg4 Kc7? 31.Bc3?? Rf4=+ 32.Qe2 Rdf8 33.Qc4 Kb8? 34.f3?? Be4? 35.fe4 b6 36.Qe6 Bc5 (36...Bc5 37.Be5 Ka8 38.Bf4 Rf4+–; 36...Rf1 37.Nf1 Bc5 38.Bd4 Bd4 39.Ne3 Be3 40.Kh1 Rf1) 0–1. elsh1403 – gigisan99 (1630), internet, 2011.

5.Qh5 g6 6.Qh4 Ba5 7.Nf3 Bf5 8.Qa4 Bb6 9.Bc4 Nd7 10.d4 Bg4 11.Nbd2 Ne7 12.0-0 h5 13.Qb3+/– Rh7 14.h3 Bf3 15.Nf3 e4 16.Nd2 f5 17.a4 a5 18.f3 ef3 19.Nf3 Nf6 20.Ng5 d5 21.Nh7 dc4?? 22.Nf6 Kf7 23.Qc4 Kf6 24.e4 c6 25.Rad1 cb5 26.Qb5 Kf7 27.ef5 gf5 28.Qc4 Qd5 29.Qb5 Ra6?? 30.Kh1 Qb5 31.ab5 Ra8 32.d5 Rd8 33.d6 Ng6 34.Rf5 Kg8 35.Rg5 Kh7 36.d7 Be3 37.Rf5 Ne7 38.Rf7 Kg6 39.Re7 Bc5 40.Re8 Bb6 41.Rd8 Bd8+– 42.c4 a4 43.c5 Kf7 44.c6 bc6 45.bc6 Ke7 46.Be5 a3 47.c7 Bc7 48.Bc7 a2 49.d8Q (49.d8Q Kf7 50.Rf1 Kg7 51.Qf6 Kh7 52.Qf7 Kh6 53.Bf4) 1–0. elsh1403 – gigisan99 (1645), internet, 2011.

5.Qh5 g6 6.Qh4 Ba5 7.f4 Nd7 8.Bc4 Nb6 9.Bb3 ef4 10.Qf4 g5 11.Qe4 Qe7 12.Qd4 Be6 13.Nf3 h6 14.0-0 0-0-0 15.c4 Bb4 16.Ba3 Bc5 17.Bc5 dc5 18.Qc3 Bg4 19.d4 Bf3 20.Rf3 cd4 21.ed4 Nd7 22.Nd2 Qf8 23.a4 Ne7 24.c5 c6 25.a5 cb5 26.a6 Nc6 27.ab7 Kb8 28.Rff1 f5 29.d5?? b4?? 30.Qg3+– f4 31.Qf2 Nce5? 32.c6 Nb6? 33.Nc4! Nec4 34.Bc4 1–0. elsh1403 – gigisan99 (1625), internet, 2011.

5.Qh5 g6 6.Qh4 Ba5 7.f4 Bf5 8.fe5 de5 9.Qa4 c6 10.Nf3 Ne7 11.Bc4 b6 12.0-0 cb5 13.Bb5 Bd7 14.Nh4 Nbc6? 15.Rf6+/– Qc7 16.c4 0-0-0 17.d4 ed4 18.ed4 Nb4 19.Nc3 Bb5? 20.Nb5+– Qc4?? 21.Rc1 Qc1 22.Bc1 Ned5 23.Na7 Kb8 24.Rf7 Nc7 25.Bf4 Ka7 26.Rc7 Ka8 27.Nf3 (27.Nf3 Rc8 28.Re7+–) 1–0. elsh1403 – gigisan99, internet, 2011.

4.a4 Bb4 5.c3 Ba5 6.d4 ed4 7.Qd4 Ne7 8.Nd2 0-0 9.Nb3 Nf5?? (better is 9...a6=) 10.Qd5+– Kh8 11.Qa8 Nd6 12.Na5 Re8 13.Qb8 Qe7 (13...ba5 14.e3+–) 14.Qc7 ba5 15.Ba3 Qe5 16.Bd6 Qe4 17.Qa7 Qc4 18.Qa5 Qd5 19.Qc7 Bb7 20.Qd7 Qe4 21.Nf3 Bc8 22.Qf7 Bg4 23.Bf8 Be6 24.Qg7 (24.Bg7) 1–0. Okeefe,Michael (2190) – Holmquist,Marson, VD–2010-0-00003, 2010.

4.a4 Bb7 5.d3 c5 6.c4 d5 7.cd5 Bd5 8.Nf3 a5 9.Nc3 Be6 10.e4 Bg4 11.Be2 Ne7 12.h3 Bh5 13.0-0 Bf7 14.Ne1 g6 15.f4 Bg7 16.f5 g5 17.g4 Nd7 18.Rc1 Rc8 19.Nc2 Nf8 20.Ne3 h6 21.Bf3 Nh7 22.Ned5 Nd5 23.Nd5 Bd5 24.ed5 Qd6 25.Be4 0-0 26.Ba3 Rfe8 27.Qb3 Kh8 28.Rfd1 Nf8 29.d4 ed4 30.Rd4 Qf4 31.Rdd1?? Qe4 32.Re1 Qd4 33.Kg2 Nd7 34.Bb2 Qd2 35.Kg3 Re1 36.Bf6 Rc1 37.Bg7 Kg7 (37...Kg7 38.Qd1 Rc3 39.Qf3 Qf4 40.Kf2 Qf3 41.Ke1 Re8 42.Kd2 Qd3) 0–1. iczker – yciak, internet, 2011.

4.a4 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.a4 b6).

4.Nc3 a6 5.a4 d5 6.e4 de4 7.Ne4 Be6 8.Nf3 =.

4.c4 a6 5.e3=.

4.c4 Bc5 5.e3 Nh6 6.Be2 Bb7= 7.Nf3 d5 8.cd5 Qd5 9.Nc3 Qd7 10.0-0 0-0 11.d4+/– ed4 12.Nd4 Qe7 13.Bf3+/– Bf3 14.Qf3 Nd7 15.Nf5 Nf5+/– 16.Qf5 Ne5 17.Rfd1 Rad8 18.Nd5 Qf7 19.h3?? Rd5–+ 20.Rd5 Qd5 21.a4 Qd2 22.Qe6 Nf7 23.Bc1 Qd6 24.Qe4 Qe5 25.Qe5 Ne5 26.Bb2 Rd8 27.Be5 fe5 28.Rc1 Rd2 29.Kf1 Ra2 30.Rc4 Kf7 31.Ke1 Ke6 0–1. gtate (1900) – kecker (1915), net–chess.com, 2006.

4.c4 d5 5.e3 d4 (better is 5...Ne7!?=) 6.ed4+/– ed4 7.a4 (7.Qh5!? g6 8.Qf3+/–) 7...c5 8.Qf3 (8.Bd3!? f5 9.a5+=) 8...Qe7+= 9.Ne2 Bb7 10.Qg3 Nd7 11.f4 f5 12.d3 Ngf6 13.h3 Qe6 14.Nd2 Nh5 15.Qf2 (15.Qg5 g6 16.a5 Be7–+) 15...Bd6 16.0-0-0 (16.Kd1 0-0–/+) 16...0-0–+ 17.Rg1 a6 18.Re1 Rfe8 19.g4? (better is 19.g3 Qe3 20.Qe3 Re3 21.Bg2 Bg2 22.Rg2 Rd3 23.Nf1–+) 19...Nf4!–+ 20.g5 (20.Nf4 Qe1 Double attack (20...Qe1 Pinning; 20...Qe1 Deflection)) 20...Nd3 (20...Nd3 21.Kb1 Nf2–+) 0–1. Baer,Cy (1895) – Smiley,William (2055), remoteschach.de, 2007.

4.d4 Bb7 5.Nf3 (5.de5 a6+=) 5...Bb4 6.c3 Bd6 7.de5 fe5 8.e3 Nf6 9.Bc4 e4 (9...a6!?=) 10.Ng5+- Bd5?? (better 10...Qe7 11.Nf7 Rf8 12.Nd6 Qd6 13.Qd6 cd6+=) 11.Bd5+- Nd5 (11...c6 12.Bc4 Qe7 13.Nf7+-) 12.Qd5 Qe7 (12...Rf8 13.Ne4 Na6 14.Nd6 cd6 15.ba6+-) 13.Qa8 0-0 (13...c6 14.Nh3+-) 14.Ne4 (14.Qd5 Kh8 15.Ne4 Be5+-) 14...Be5 (14...Nc6 15.Qf8 Kf8 16.Nd6 Ne5+-) 15.Qd5 Qe6 (15...Kh8 16.Ba3 d6 17.Qb7+-) 16.Qe6 de6 17.Nbd2 Nd7 (17...c6 18.f4 Bc7 19.c4+-) 18.Nf3 Bf6 19.Nd4 (19.0-0-0 Nb8+-) 19...Nc5 (19...Ne5 20.Ba3 Re8 21.Rd1+-) 20.0-0 (20.Nc5!? bc5 21.Ne6 Rb8+-) 20...Nd3 (20...Ne4 21.Ne6 Rc8+-) 21.Ba3 Rf7 22.Ne6 Be5 23.N6g5 (better 23.Rfd1 Rd7+-) 23...Rd7 24.Rad1 Nc5 25.Bc5 Rd1 26.Rd1 bc5 27.Rd8 1-0. aravind555 – FearlessSlayer, lichess.org, 2018.

4.d4 d6 5.c4 Nh6 (5...ed4 6.Nf3=) 6.e4 Be7 7.d5 (7.Nf3 a6+=) 7...Nd7 8.Nd2 (8.Qh5 Nf7=) 8...Nc5 9.f3 (9.Qh5 Nf7=) 9...0-0 10.Nb3 Nb3 11.Qb3 (11.ab3 f5=) 11...f5+= 12.Bd3 fe4 (12...a6 13.ba6 Bh4 14.g3+=) 13.Be4= Bf5 14.Qd3 Be4 15.Qe4 Nf5 16.Ne2 Qd7 17.Bc3 (17.0-0 a6 18.a4 Bf6=) 17...Rae8 (17...a6 18.ba6 Bh4 19.g3+=) 18.a4 (18.0-0 Bg5=) 18...Bg5 19.Bd2 (19.0-0 a6=) 19...Bd2+= 20.Kd2 a5 (20...Qe7 21.h4+=) ½–½. Wartig,Wolfgang – Kopplin, Berlin Stadtevergleich, 1989.

4.d4 e4 5.c4 d5 (5...a6 6.e3 Bb7 7.Nc3=) 6.e3+= Bf5 7.cd5 Qd5 8.Nc3 Qd8 (8...Bb4 9.Qa4 Bc3 10.Bc3+=) 9.Bc4+- Bd6?? (better 9...Ne7+-) 10.Bg8+- Rg8 11.Nge2 (better 11.Qb3 Rh8 12.Qd5+-) 11...Bg4? (11...Qd7!?+=) 12.h3 (12.Qb3 Kf8+-) 12...Bh5 13.Qb3 Kf8? (better 13...Bf7 14.Qc2 f5 15.Ne4 Bb4 16.Bc3 Be7+-) 14.Qd5+- (14.Ne4?! Bf7 15.Qa4 Be7+-) 14...Be2 15.Ne2?? (15.Qa8 Bd3+-) 15...c6 (better 15...Bb4 16.Bc3 Qd5 17.Bb4 Kf7-+) 16.Qb3?? (better 16.Qe4 Qe7 17.Qf3 Bb4 18.Kf1+-) 16...c5?? (better 16...a6!?+=) 17.0-0 (better 17.Qd5!? Na6 18.ba6 cd4 19.Qe4 de3+-) 17...Nd7 (better 17...a6+-) 18.dc5?? (18.Qd5 Ke7 19.Qe4 Kf7 20.Rfd1+-) 18...Nc5+= (worse 18...bc5 19.Nc3 Qe7 20.Rfd1+-) 19.Qd5?? (better 19.Qc4+=) 19...Bh2!-+ 20.Kh2 Qd5 21.Nf4 (21.Bd4 Ne6-+) 21...Qd6 (21...Qc4 22.Rfb1-+) 22.Kg1 Kf7 23.Rad1 Nd3 24.Nd3 ed3 25.Rd2 Rgd8 26.Rfd1 (26.Bd4 Qa3 27.Rfd1 Rac8 28.Rd3 Qa2-+) 26...Qb4 (better 26...a6 27.Bd4-+) 27.Kf1 (27.Bd4 Qb5 28.Rd3 Rac8-+) 27...Rd6 (27...Rac8!? 28.a3 Qb3 29.Bd4-+) 28.Bd4 Rad8 (28...Qb5!? 29.Rd3 Rc8 30.Kg1-+) 29.Rd3 Qb5 30.Kg1 Kg6 31.Kh1 (31.R3d2 Qa5-+) 31...Kf5 (31...Rc6 32.Kh2-+) 32.f3 g5 33.Kg1 h5 34.Kh2 (34.Ra3 Rc8 35.Rdd3 Qb1 36.Kh2 Rc1 37.Bc3 Rh1 38.Kg3 h4 39.Kf2 Qf1) 34...g4 35.hg4 hg4 36.Kg3 gf3 37.gf3 Kg6 38.Kf2 (38.f4 Qh5 39.Kf2 Kf5 40.e4 Ke4-+) 38...Qh5 (better 38...Rh8!? 39.R3d2 Qg5 40.Rg1 Rh2 41.Kf1 Qg1 42.Kg1 Rd2 43.Kf1-+) 39.Rg1 (39.R3d2 Qh4 40.Ke2 Qg3-+) 39...Kf7 40.Rc3 Qh2 (40...Qh4 41.Kf1 Rd4 42.ed4 Qd4 43.Rc7 Ke6 44.Rc6 Ke5 45.Rd6 Qd6 46.Rg5 fg5 47.Kg1 Qd1 48.Kf2 Rd2 49.Kg3 Qe1 50.Kg4 Qh4) 41.Rg2 Qh4 42.Kf1 Rd4 43.ed4 Qd4 44.Rc7 Ke6 45.Rcc2 (45.Re2 Kf5 46.Rh7-+) 45...Qd1 46.Kf2 Qc2 47.Kg3 (47.Kg1 Qc5 48.Kh2 Qe5 49.f4 Rh8 50.Kg3 Qe3 51.Kg4 Qh3) 47...Qg6 (47...Rg8 48.Kf4 Qc4 49.Ke3 Rg2 50.f4 Qc3 51.Ke4 f5) 48.Kf2 (48.Kh2 Qh6 49.Kg1 Qe3 50.Kh2 Qe5 51.f4 Rh8 52.Kg3 Qe3 53.Kg4 Qh3) 0-1. aravind555 – babis, lichess.org, 2018.

4.d4 Ne7 5.de5+/– Nf5? (better is 5...fe5 6.Be5 Ng6+/–) 6.Qd5 c6 7.bc6 Ne7?? (7...dc6 8.Qd8 Kd8 9.ef6 c5+–) 8.cd7 Qd7 9.Qa8 Na6 (9...Nec6 10.e6! Bb4 11.c3 Qc7 12.cb4 Bb7 13.Qb7 Qb7+–) 10.ef6 gf6 11.Bf6 Rg8 12.e4 Rg4 (12...Nb4 13.Na3 Kf7+–) 13.Ba6 Kf7 14.Be7 Qe7 15.Qc8 Qe4 16.Ne2 Qg2 17.Rg1 (17.Bb7!? Qh3 18.Qf5 Kg7+–) 17...Bb4 18.c3 Bc3 19.Nbc3 Rg8 20.Bc4 Ke7 21.Qe6 Kf8 (21...Kd8 22.Rd1 Qd5 23.Rd5 Kc7 24.Rd7 Kb8 25.Rg8) 22.Qf7 1–0. Rosner,Dirk – Krahl,Wolfgang, corr GTM, 2001.

4.e3 c5 5.Qh5 (better is 5.d4!?+/–) 5...g6= 6.Qf3 Qc7?? (better is 6...d5=) 7.Qa8+– Kf7 (7...Qb7 8.Qb7 Bb7 9.d4 ed4 10.ed4+–) 8.Qd5 Kg7 9.Bc4 d6 10.Nc3 (better is 10.Qd3+–) 10...Ne7 (10...Bb7 11.Qe6 Bg2+–) 11.Qf3 (better is 11.Qf7 Kh6 12.Qf6+–) 11...Nf5 12.Ne4 (12.Nd5!? Qd8+–) 12...Nd7 13.Be6 Be7 14.Bf5 gf5 15.Ng3 f4 (15...Nf8 16.Nf5 Bf5 17.Qf5+–) 16.Nf5 Kf7 (16...Kf8 17.Qh5 Nb8 18.ef4 Bf5 19.Qf5+–) 17.Qh5 Ke6 18.e4 Rg8 19.Qh7 Re8 20.Ng7 Kf7 21.Ne8 Ke8+– 22.Qg8 Nf8 23.Nf3 Bb7 24.d3 c4 25.dc4 Be4 26.0-0 Qc4 27.Nd2 Qc2?? 28.Ne4+– Qb2 29.Rac1 Qb5 30.Rb1 Qc6 31.Nd2 b5 32.Nb3 a6 33.Rbc1 Qb6 34.Qd5 f3 35.Rc8 Kd7 36.Rfc1 1–0. OPA – pele1000, Live Game Caissa's Web, 2004.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 b6).

4.e3 e5 5.Qh5 (better is 5.Be5!? Bb7 6.Bg3+/–) 5...g6= 6.Qd1 Bc5 (6...a6 7.d4=) 7.Nf3 d5 8.c4 dc4 9.Bc4 Ne7 10.0-0 Qd6 (10...a6 11.d4 ed4 12.Nd4+/–) 11.d4 e4?? (better is 11...ed4 12.Nd4 a6+/–) 12.Nfd2+– (12.dc5?! Qd1 13.Rd1 ef3 14.Bf6 Rf8 15.Be7 Ke7+–) 12...Bb4 (12...Be6 13.Ne4 Bc4 14.Nd6 Bd6+–) 13.Ne4 (13.Ne4 Qd8 14.Nf6 Kf8 15.Qf3+–) 1–0. GuestPDWZ – GuestNBMM, freechess.org, 2017.

4.e4 c6 5.Nf3 c5? 6.Bc4 Nh6?? 7.0-0 d6?? 8.Bd5+– Qd7 9.Ba8 Qb5 10.Bc3 Ng4 11.h3 h5 12.hg4 hg4 13.Nh2 Nc6 14.Bc6 (14.Bc6 Qc6 15.d3+–) 1–0. agluis (2090) – bsmiley, net–chess.com, 2003.

4.e4 g6 5.Nf3+= d6 6.Bc4 Bd7 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c5 11.Nc3 Ne7 12.Nd5 Nd5+= 13.ed5 Qe7 14.Be2 Bg7 15.c4 0-0 16.d3 g5 17.Nd2 f5 18.Bh5 Be8 19.Be8+= Qe8 20.Nf3 h6 21.h4 g4=+ 22.Nh2 Bf6 23.g3 Rf7 24.Re1 Ra7=+ 25.Bc3 Nd7 26.Nf1 h5 27.Ne3= f4 28.Nf5 Be7 29.Nh6 Kg7= 30.Nf5 Kh7 31.Qc2 f3 32.d4! Nf6?? 33.Nd6 Kg7 34.Ne8 Ne8 35.de5 Kf7 36.d6 Bf8 37.Qh7 Bg7 38.e6 Kf8 39.Bg7 Ng7 40.e7 (40.e7 Re7 41.Re7 Ne6 42.Qf7#; 40.Qh8#) 1–0. stoker – zerz, Caissa.com, 2004.

4.Nf3 Bb7 5.e3 a6 6.a4 a5 7.Bc4 Ne7 8.0-0+= d5 9.Bb3 c6 10.c4 cb5 11.cb5 Nd7 12.d4 g5? 13.de5+– Ng6 14.ef6 Nf6 15.Ng5 Bg7 16.Ne6 Qe7 17.Ng7 Qg7 18.Nc3 0-0-0 19.Nd5! Nh4 20.Qc2 Kb8 21.Nf4 Bg2 22.Be5 Ka7?? 23.Qc7+– Qc7 24.Bc7 Rd2? 25.Ng2 Ng2 26.Kg2 h5 27.Rad1 Rd1 28.Rd1 Kb7 29.Be5 Rf8 30.Rd6 Ne8 31.Bd5 Kc7 32.Rf6 Kd7 33.Rf8 h4 34.Re8! Ke8 35.Bc7 Kd7 36.Bb6 Kd6 37.Bc6 Ke5 38.Ba5 Kf5 39.Bc7 Kg4 40.b6 h3 41.Kg1 Kf5 42.a5 (42.a5 Kg5 43.b7 Kg6 44.b8Q Kg5 45.Qg8 Kf6 46.Bd8 Kf5 47.Qf7 Ke5 48.Bc7#; 42.b7 Kg6 43.b8Q Kf6 44.Qg8 Kf5 45.Bd7 Kf6 46.Bd8 Ke5 47.Qe6#) 1–0. pumpkin (2375) – sbderkach (2030), net–chess.com, 2009.

4.Nf3 Bc5 5.e3 Ne7 6.c3 d5 7.d4 ed4 8.cd4 Bd6 9.Nc3 0-0 10.Qb3 Be6 11.e4 c6 12.bc6 Qc8?? (better is 12...Nbc6 13.ed5 Na5+=) 13.ed5+– Bf7 14.Bc4 a6 15.a4 Qe8 16.0-0 a5 (16...Qd8 17.Rfe1+–) 17.Rfe1 (17.Nb5!? Nc8 18.Ba3 Qd8+–) 17...Qc8 18.Ba3 Ba3 19.Qa3 (19.Ra3 Qd8 20.Nb5 Nd5+–) 19...Nf5 (19...Nec6 20.dc6 Bc4 21.d5+–) 20.Bb5 Na6 21.d6 (better is 21.Ba6!? Ra6 22.Rac1 Rd8+–) 21...Nb4 22.d5! Nd6 (22...Nd5 23.Nd5 Combination; 22...Bd5 23.Nd5 Combination) 23.Nd4 Bd5?? (better is 23...Nb5 24.Ncb5 Bd5+/–) 24.Nd5+– Nd5 25.Qd6 Rd8 26.Qe6 Kh8 27.Qc8 Rac8 28.Ne6 Rg8 29.Rac1 Nb4 30.c7 h6 31.Red1 Kh7 32.Rd8 Kh8 33.Rc8 Rc8 34.Rd1 Kh7 35.Rd8 (35.Rd8 Rc7 36.Nc7+–) 1–0. Fournier,Frederic – Cornille,Gerard, Partie Libre, 1996.

4.Nf3 d5 5.e3 Bd7 6.a4 c6 7.c4 Bc5 8.d4 Bb4 9.Bc3 Bc3 10.Nc3 e4 11.Nd2 Ne7 12.Be2 0-0 13.0-0 Qc7 14.Rc1 a6 15.cd5+– cd5 16.Nd5! Qd6?? 17.Ne4 Qd5 18.Bc4 Be6 19.Bd5 Bd5 20.Nc3 (20.Nc3 ab5 21.Nd5 Nd5 22.Qb3+–) 1–0. Gegonz – Shakkimestari, internet, 2006.

5.Nc3 Ne7 6.e3 a6 7.Nf3 Nf5 8.d4 ed4 9.Nd4 Nd4 =.

5.Nc3 Ne7 6.e4 d6 (6...a6 7.Qh5 g6 8.Qh4=) 7.d4 Ng6 8.Nh3 Nd7 9.Nd5 Be7 10.Qg4 Ndf8 (10...a6 11.Qe6=) 11.f4 ef4 12.Nhf4 Bc8 (12...a6!?+/–) 13.Qh5 Qd7 14.Be2 Kd8 15.0-0 Qe8 (15...a6 16.a4+/–) 16.Nd3 Bd7 17.N3b4 Ne6 18.Bg4 Ngf8 19.Ne7 Ke7 20.e5 Qh5 21.ef6 gf6 22.Bh5 Ng7 23.Nd5 Kd8 24.Bf3 (worse is 24.Nf6 Nh5 25.d5 Ng6 26.Nh5 Ne5+–) 24...Rc8 25.Nf6 h5 (25...Bf5+–) 26.d5 (26.Nd7?! Nd7 27.Bc1 Rb8+–) 26...Bf5 27.Nh5 (27.Nh5 Nd7 28.Ng7+–) 1–0. De Visser,Arno – Schurer, Hoogoven, 1985.

5.e3 a6 6.Nf3 Nh6 7.Nc3 Bc5 8.Bd3 ab5 9.cb5 d5 =.

5.e3 Bb4 6.Nf3 c5 7.a3 Ba5 8.Be2 e4 9.Ng5 Ne7 =.

5.e3 Bc5 6.d4 Bb4 7.Bc3 Qe7 8.Nf3 a6 9.a3 Bc3 =.

5.e3 d5 6.Nf3 dc4 7.Bc4 Ne7 8.Qb3 Qd6?? (8...Bd5 9.d4 Bc4 10.Qc4+=) 9.a4 (better 9.Ba3 c5 10.bc6 Qc6 11.Bb5+-) 9...Nd7 10.Ba3 Nc5 11.Bf7 Kd8 12.Qc4 Nd5 (12...Nc8 13.0-0 Qd3 14.Bc5 Qc4 15.Bc4 Bc5 16.d4 ed4 17.Nd4 Bd4 18.Rd1=) 13.d4 (13.Nc3 Nb4 14.0-0 Ncd3+=) 13...ed4 14.0-0 (worse 14.ed4 Qe7 15.Ne5 fe5 16.Bd5 ed4 17.Kd1 Qd7 18.Bb7 Nb7=+; 14.Nd4?! Qe5+=; worse 14.Qd4 Qd7 15.Bd5 Bd5=) 14...de3 (better 14...Ke7 15.Bd5 A) 15...Qd5? 16.Qd5 Bd5 17.ed4+- (17.Nd4?! a6+=); B) 15...Bd5 16.Qd4 Bf3 17.gf3 Kf7 18.Bc5 Qc5=) 15.fe3?? (better 15.Rd1 a6 16.Bd5 (16.Rd5?! Bd5 17.Bd5 ef2 18.Kf2 Ra7+/-) 16...ab5 17.ab5+-) 15...Kc8 (better 15...Ne3 16.Qe2 Qe7 17.Bc5 Qc5-+ (17...bc5?! 18.Qd3 Kc8 19.Re1 Qf7 20.Qe3-/+)) 16.e4? (better 16.Qe2 Qd7 17.Bd5 Qd5 18.Nd4=+) 16...Ne3-+ 17.Bc5 Nc4?? (better 17...Qc5 18.Qe6 Kb8 19.Qe8 Bc8-+) 18.Bd6-/+ Bd6?? (better 18...Nd6 19.Be6 Kb8-/+) 19.Bc4+- Be4 20.Nc3 Bb7 21.Rac1 Rd8 22.Nd5?? (better 22.Be6 Kb8 23.Bf5+/-) 22...Bc5-+ 23.Kh1 Bd5 (23...Rd5?! 24.Bd5 Bd5 25.Rc3-/+) 24.Be2 (24.Bd5 Rd5 25.Rfe1 a6-+) 24...Kb7 25.Nd2? (25.Bd3-+) 25...Be3 26.Rc2 (26.Nc4 Bc1 27.Rc1 c6-+) 26...Bd2 27.Rd2 Be4 (better 27...Bg2 28.Kg2 Rd2-+) 28.Rd8 (28.Rfd1 Rd2 29.Rd2 Re8-+) 28...Rd8 29.Kg1 Bg6 (29...c5 30.Rf4 Rd4 31.Bf3 Bf3 32.Rf3 Ra4 33.Re3-+) 30.Kf2 (30.Bf3 Kc8-+) 30...Rd2 (better 30...c5-+) 31.g3?? (better 31.Ke3 Ra2 32.Bf3 Kb8 33.Rd1-/+) 31...Ra2 (better 31...Bh5! 32.Re1-+) 32.Ke3 Ra4 33.Bf3 (33.Rc1 Be8-+) 33...Kb8 (better 33...Kc8-+) 34.Rb1?? (34.Rd1 Ra3 35.Kf2-+) 34...Ra3 35.Kf2 (35.Kd2 Bb1 36.Be2-+) 35...Rd3 (better 35...Bb1 36.Bc6 Bd3-+) 36.Rc1 (36.Re1 Rd2 37.Kg1 Kc8-+) 36...Rd8 (36...Be8 37.Rb1-+) 37.Bg2 (37.h3 Bf5-+) 37...Rc8 (37...Rd2 38.Kg1-+) 38.Kf3 (38.Re1 Be8 39.Re7 Bb5 40.Rg7 a5-+) 38...a6! 39.Kg4? (39.ba6 c5 Passed pawn) 39...Ka7 (better 39...ab5!? 40.Bc6 Be8 41.Be4-+) 40.Kh4 (40.Kf4 Bd3 41.Bh3 f5-+) 40...a5 (40...Bf5 41.g4 Bd7 42.ba6 Ka6 43.Ra1 Kb5 44.Kg3-+) 41.Kh3 (41.Bh3 f5-+) 41...a4 (better 41...Bf5 42.g4 Bd7-+) 42.g4 (42.g4 Bd3 43.Bc6-+). ClayPigeons (2185) - ShinigamiPawn (2155), Rated Bullet game, lichess.org, 2021.

5.e3 Bd6 6.Nf3 a6 7.d4 Bb4 8.Bc3 Qe7 9.a3 Bc3 =.

5.e3 Be7 6.Nf3 a6 7.d4 e4 8.Nfd2 f5 9.Be2 Nf6 =.

5.e3 Ne7 6.Nf3 e4 7.Nh4 d5 8.Be2 Qd6 9.d3 ed3 =.

5.e3 Nh6 6.Nf3 (6.Nc3 a6 7.Nf3 Bc5 8.Bd3 ab5 9.cb5 d5=; 6.d4 Bb4 (6...ed4 7.Bd4 Nf5 8.Bc3 Nd6 9.Nf3 Ne4=) 7.Bc3 Qe7 8.Nf3 a6 9.Be2 ed4=; 6.a3 a6 7.d4 ed4 8.ed4 Nf7 9.Nc3 Bd6=; 6.Qh5 Nf7 7.d4 ed4 8.Bd4 Bb4 9.Kd1 c5=) 6...Nf7 (6...a6 7.Be2 ab5 8.cb5 e4 9.Nd4 c5=; 6...e4 7.Nd4 a6 8.Be2 ab5 9.cb5 c5=; 6...Be7 7.d4 e4 8.Nfd2 0-0 9.Nc3 f5=; 6...Bb4 7.a3 Be7 8.d4 e4 9.Nfd2 0-0+=; 6...Bc5 7.Be2 e4 8.Nd4 a6 9.d3 0-0=) 7.Be2 Bf3 (7...a6!?= 8.0-0 ab5 9.cb5 Nd6=) 8.Bf3+= (8.gf3?! a6= 9.d4 Bb4=) 8...c6 9.0-0 Qc7 (9...a6+/–) 10.g3 d6 (10...a6!?+=) 11.Nc3+/– a6 (11...f5 12.Nd5! Qc8 13.bc6 Nc6 14.Qa4+–) 12.bc6+– Nc6 13.Qa4 Nfd8 14.d4 (14.Nd5 Qb7+–) 14...Qd7 (14...Kf7 15.Bd5 Kg6 16.Bg2+–) 15.Rfd1 (15.Nd5!? Qb7+–) 15...Ra7 16.Rd2 (16.Nd5 Qb7+–) 16...Be7 (16...Na5 17.Bh5 g6 18.Qd7 Kd7 19.Be2+/–) 17.Rad1 (17.Nd5 Nb8 18.Qb3 Ndc6+–) 17...0-0 (17...ed4 18.ed4 Na5 19.Qd7 Kd7 20.Be2+/–) 18.Nd5 (18.Qb3 ed4 19.ed4 Rb7+–) 18...b5? (better is 18...Nd4 19.Ne7 Kh8 20.Qd7 Nf3 (20...Rd7?? 21.ed4 e4 22.Be4 Re7 23.Bd5+–) 21.Kg2 Rd7 22.Kf3 Re7 23.Rd6 Nf7 24.Rb6 Rc7+/–) 19.cb5+– ab5 20.Ne7 (20.Qb5 Nd4 21.Ne7 Kh8 22.Bd4 Qb5 23.Ba7 e4 24.Be4 Qe5+–) 20...Qe7 21.Qb5 Rb7? (better is 21...Rc7+–) 22.Qc4 (22.Bc6?! Rb5 23.Bb5 e4=) 22...Kh8 23.Bc6 Nc6 24.Qc6 Rc7 25.Qd5 e4 26.Qf5 (26.Ba3 Rd8+–) 26...g6 27.Qh3 d5 28.Qg4 f5 29.Qe2 (29.Qf4 Ra8+–) 29...f4 (29...Rfc8 30.f3+–) 30.ef4 Qd7 31.Rc2 Ra7 32.Ba1 Ra3 33.Rdc1 g5 (33...Qa4 34.Bc3+–) 34.fg5 Raf3 35.Qa6 Qf5 36.Qd6 (36.Qh6 Rf2 37.Qf8 Qf8 38.Rf2 Qe7+–) 36...Rf2 (36...Kg8 37.h4+–) 37.Qe5 (37.Qf8 Qf8 38.Rf2 Qe7+–) 37...Qe5 (37...Kg8 38.Qf5 R2f5 39.a4+–) 38.de5 (38.Rf2 Qe7 39.Rf8 Qf8–/+) 38...R2f3 (38...Rc2 39.Rc2 Kg7+–) 39.e6 Kg8 40.Rc8 (better is 40.Rc7 R3f7 41.ef7 Rf7+–) 40...Rc8 (40...Rf1 41.Rf1 Rc8 42.Bd4+–) 41.Rc8 Rf8 42.Rc6 1–0. Zielke,Bernd – Unterhauser,Heinz, Kiel op, 2000.

5.Nf3 a6 6.e3 Ne7 7.Nc3 Nf5 8.d4 ed4 9.Nd4 Nd4 =.

5.Nf3 Bb4 6.a3 Ba5 7.e3 a6 8.Be2 Ne7 9.0-0 0-0 =.

5.Nf3 Bc5 6.d4 Bf3 7.gf3 ed4 8.Bd4 Qe7 9.Rg1 Bb4 =.

5.Nf3 Bd6 6.e3 Nh6 7.d4 Bb4 8.Bc3 Qe7 9.Be2 ed4 =.

5.Nf3 e4 6.Nd4 Nh6 7.Qc2 a6 8.Nc3 f5 9.e3 Bc5 =.

5.Nf3 Be7 6.e3 a6 7.d4 e4 8.Nfd2 f5 9.Be2 Nf6 =.

5.Nf3 Ne7 6.d4 e4 7.Nfd2 a6 8.e3 f5 9.Nc3 ab5 =.

5.Nf3 Nh6 6.e3 a6 7.Nc3 Bc5 8.Bd3 ab5 9.cb5 d5 =.

5.Qd4 Bb7 6.Nc3 +=.

5.Qd4 c5?? 6.bc6 Nc6= 7.Qc4 Qe7 8.e3 a6 9.Nf3 b5 10.Qc3 b4 11.Qc4 a5 12.Be2 Ba6 13.Qb3 Be2 14.Ke2 a4 15.Qd3 Rd8 16.Rd1 Qc5 17.Nd4?? Nd4 18.Bd4= Qe7 19.Nd2 d5 20.Qb5 Rd7 21.Qa4 Qd6 22.Nb3 Be7?? 23.Nc5+– Nh6 24.Nd7 Qd7 25.Qd7 Kd7 26.c3 Kc6 27.cb4 Bb4 28.a3 Bd6 29.Rdc1 Kd7 30.a4 Ra8 31.a5 Nf5 32.a6 Nd4 33.ed4 Bb8 34.Rcb1 Ba7 35.Rb7 Ke6 36.Rg7 Bd4 37.Ra4 Ba7 38.Rh7 Kf5 39.Rb7 Ke5 40.h4 Kf5 41.h5 Kg5 42.g4 1–0. bashful – butchie, Live Game Caissa's Web, 2004.

5.Bd4 a6 6.e3 Bb7 7.Nf3 Bb4 8.Nbd2 =.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bb7 8.Be5?? (better is 8.Nf3=) 8...fe5–/+ 9.Qh5 g6?? (better is 9...Ke7 10.Qe5 Kf7 11.Bc4 d5–/+) 10.Qe5+– Qe7 11.Qc7 (11.Qh8 Qg7 12.Qg7 Bg7+–) 11...Be4 12.Qb8 Kf7 13.Nf3 (13.Nc3 Bc2 14.Bc4 Kg7 15.Qb6 Qa3+–) 13...Bg7? (13...Bc2 14.Nc3 Qf6 15.Nd4+–) 14.Qf4 (better is 14.Qb6 Bf3 15.gf3+–) 14...Bf6 (14...Ke8 15.Bd3 Bd5+–) 15.Ng5 Kg7 16.Ne4 Be5 17.Qg5 Nf6 18.Nf6 Bf6 19.Qd5 Rc8 20.Bd3 (20.Bd3 Rc5 21.Qb7+–) 1–0. Kreuzer,Uwe – Beyer, Ludwigs Active chess, 1989.

5.a4 c6 6.c4 c5 7.Be2 Bb7= 8.Nf3 d5 9.Nh4 d4 10.ed4 ed4 11.d3 Bd6= 12.0-0 Ne7 13.Bf3 Bf3 14.Qf3 Nd7 15.Re1 Ne5 16.Qh5 g6 17.Qh6 Nf7 18.Qg7 Be5 19.Nf3 Nf5–/+ 20.Ne5 fe5?? 21.Re5!+/– Ne5?? 22.Qh8+– Kd7 23.Qe5 Kc8 24.Bc1 Kb7 25.Qe4 Ka7 26.Bf4 Rc8 27.Nd2 Qf8 28.Nf3 Re8 29.Qc6 Re7 30.Bc7 Rc7 31.Qc7 Ka8 32.Qb6 g5 33.ba6 Qc8+– 34.Rb1 Ne7 35.Qb7 Qb7 36.ab7 Kb8 37.Ng5 h6 38.Ne6 Nc6 39.Nc5 h5 40.Nd7 Kc7+– 41.b8Q Nb8 42.Nb8 Kc8 43.a5 Kc7 44.a6 Kc8 45.a7 Kc7 46.a8Q Kc8 47.Qc6 Kd8 48.Qd7 1–0. secgestor – rrobas (1695), internet, 2007.

5.c4 ab5 6.cb5 d5 (6...Bb7 7.Nf3=) 7.Nf3 (7.d4 e4=) 7...Bc5 (7...Bd6 8.Be2+=) 8.Be2 (8.d4 Bb4 9.Bc3 Qd6+=) 8...Ne7 (8...e4 9.Nd4=) 9.0-0 (9.d4 Bb4 10.Bc3 Bc3 11.Nc3 Qd6=) 9...0-0 (9...Bd6 10.Nc3=) 10.d4+= e4 (10...ed4 11.Nd4 c6 12.Nc3+=) 11.dc5+/– ef3 12.Bf3 bc5 13.Nc3 (13.Qc2 Qd6+/–) 13...c6 (13...Be6!?+=) 14.bc6+/– Nbc6 15.Nd5 Ng6? (better is 15...Rb8!? 16.Ne7 Qe7+/–) 16.Qb3 (better is 16.Nf6 gf6 17.Qb3 Kg7 18.Bc6+–) 16...Kh8 17.Rfd1 Be6 18.Qc3 (better is 18.Qc2 Nce5 19.Be4+– (19.Qc5 Ra5 20.Nf4 Rc5 21.Rd8 Nf3 22.gf3 Rg5 23.Kh1 Rd8 24.Ne6 Rd2 25.Ng5 fg5+–)) 18...Ra5?? (better is 18...Nge5 19.Be4 Qa5+–) 19.Nf4 Qe8 (19...Qe7 20.Ng6 hg6 21.Bc6 Ra2 22.Ra2 Ba2 23.Qa5+–) 20.Ng6 (20.Bc6 Nf4 21.ef4 Qc6 22.Qa5 Bd5+–) 20...hg6 (20...Qg6 21.Bc6 Ra2 22.Qc5+–) 21.Bc6 Qc8 (21...Qc6 22.Qa5 g5 23.a4+–) 22.Qa5 (22.Bd7 Bd7 23.Qa5 c4+–) 22...Qc6 23.Rd8 (23.a4 Bd5 24.f3 Be6+–) 23...Rd8 24.Qd8 Kh7 25.Rd1 (25.a4 Qb7 26.Ba3 c4+–) 25...Bc8 (25...Qa4 26.a3+–) 26.f3 (26.Qf8 Bd7+–) 26...Qa4 27.Rd2 (27.Bf6 Be6 28.Be5 g5+–) 27...Qb4 (27...Qh4 28.g3 Qb4 29.a3+–) 28.a3 (28.Qc8?! Qd2 29.h3 Qb2 30.Qc5 Qa2+–) 28...Qb7 (28...Qh4 29.g3 Qh3 30.Bf6+–) 29.Qd5 (29.Qf8 g5 30.Qe8 Qc7+–) 29...Qb5 (29...Qe7 30.e4 Qa7 31.Rc2 c4 32.Bd4 Qa3 33.Rc4+–) 30.h4 (better is 30.Rd4 g5 31.Qe4 f5+–) 30...Bb7 (30...Qa5+–) 31.Qf7 Ba6 (31...Bd5 32.Qd5 Qa4+–) 32.Bf6 Qf1 33.Kh2 1–0. Van Esbroeck – Windey, Beveren, 1996.

5.Be5 ab5 6.Bd4 b4 =.

5.Be5 ab5 6.Bf4 b4 =.

5.Be5 fe5?? 6.Qh5 g6 7.Qe5 Qe7 8.Qh8 +–.

5.Nf3 e4 6.Nd4+= d5 7.c4 ab5 8.Nb5 c6= 9.Nd4 Bc5 10.d3 Bd4 11.Bd4 c5 12.Bb2 dc4 13.Nc3?? ed3–/+ 14.Qa4?? Ra4–+ 15.Na4 Qc7 16.g3 Bb7 (16...Bb7 17.Rg1 b5–+) 0–1. gtate (1840) – cwhite (1780), net–chess.com, 2002.

5.Qh5 g6= 6.Qf3 c6 (6...d5 7.Nc3 Be6 8.e4–/+) 7.bc6 (7.d4 ed4 8.Bd4 ab5 9.Bb5 d5=) 7...Nc6 (7...dc6 8.Bc4 Nh6=) 8.Bc3 (8.Bc4 Bb7=) 8...Bb7 (8...d5 9.e4 Be6 10.Ne2+=) 9.e4 (9.Bc4 Bc5=) 9...Bg7 (9...d5 10.ed5 Nce7 11.Bb4 Bd5 12.Qa3+=) 10.Ne2 (10.Bc4 b5 11.Bb3 b4=) 10...Nge7 11.d4 (11.Bb2 d5+=) 11...ed4 (11...d5!? 12.de5 Ne5 13.Be5 de4–/+) 12.Nd4= (worse is 12.Bd4 Nd4 13.Nd4 f5–/+) 12...Nd4 13.Bd4 Nf5 14.Bc3 Qe7 15.Bd3 0-0 (15...d5 16.Nd2 de4 17.Ne4 Nh4–+) 16.0-0 Rfe8 Will e4 fall? (16...Nd6 17.Re1=) 17.Bc4 (17.Nd2 Rac8 18.Bc4 Kf8=) 17...Kh8 18.Bd5 (18.Nd2 b5 (worse is 18...Be4 19.Ne4 Qe4 20.Qe4 Re4 21.Bd5+/–) 19.Bd5 Bd5 20.ed5 Rac8+=) 18...Bd5 19.ed5 Qc5 (19...Qe2 20.Nd2+=) 20.Nd2 (20.Rd1 Rac8=) 20...Nd4 (better is 20...Ne3–/+) 21.Qd3?? (better is 21.Bd4 Qd4 22.Rad1=) 21...Ne2 22.Kh1 Nc3 (22...Qc3 23.Nc4 Qd3 24.cd3–+) 23.Nb3 Qd5 (better is 23...Qc8–+) 24.Nd4?? (24.Qc3 f5 25.Qb4 Ba1 26.c4–+) 24...f5 (better is 24...Na2 25.Rfd1 f5–+) 25.Rfe1 (25.Qc3 Qd4 26.Qd4 Bd4 27.Rad1–+) 25...Re1 26.Re1 Bd4 27.Qd2 (27.f3 b5–+) 27...Ne4 28.Kg1 (28.Re4 fe4 29.c3–+) 28...Nd2 (28...Nd2 29.Re7 Qa2–+) 0–1. Ramos Bonilla,I – Hughes,W, Telecomm, 1995.

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bb4 9.Qb3 Bc5 10.d4= ed4 11.ed4 Bd6 12.Nd2 Qe7 13.Qe3 Nh6 14.Qe7 Ke7 15.Ngf3 Bb4 16.Be2 Bf3 17.Bf3+/– Re8 18.Kd1 d6 19.Re1 Kf7 20.Re8 Ke8 21.Nb3 Nd7 22.Bc6 g6 23.h3 Ke7 24.f4 Nf5 25.Ke2 Nf8 26.g4+– Nh4 27.Bb2 Ne6 28.Nd2?? Bd2 29.Kd2 Nf4 30.d5 f5 31.gf5 Nf5–/+ 32.Bh8 Nh3 33.Ba8 Ng5 34.Bb7 Ne4–+ 35.Kd3?? Nc5 36.Ke2 Nb7 37.Kf2 Na5 38.Kg2 Nc4 39.Kh1 Kf7 40.Kh2 Ng7 41.Kh3 Kg8 42.Kg4 Ne3 43.Kg5 Nd5 44.Kh6 Kh8 45.Kg5 Nc3 46.Kh6 Nb5 47.Kg5 d5 48.Kf6 d4 49.Kf7 d3 50.Kf8 d2 51.Ke7 d1B (51...d1B 52.Kf6 c5–+; better is 51...c5 52.Kf6–+) 0–1. PondScum – a129, Caissa.com, 2004.

5.c4 a6 6.d4 ab5 7.cb5 Bb4 8.Nd2 ed4 9.Bd4 =.

5.c4 Bc5 6.Qh5 g6 7.Qh3 Ne7 8.d4 ed4 9.ed4 Bb4 10.Bc3 Bc3 11.Nc3 Nf5 (11...0-0 12.Bd3=) 12.Nf3 (12.Bd3 Nd4 13.Bg6 Ke7 14.Qe3 Ne6+-) 12...0-0 13.Be2 Qe7 14.0-0 d6 (14...Qb4!? 15.Rac1 Re8+=) 15.Rfe1 Qf7 16.Bd3 Ng7 17.d5 Nd7 18.Nd4 Bc8 19.Be4 (19.Qg3 Ne5+-) 19...Ne5+= Black gets strong initiative 20.Ne6 (20.Qh4 a6+=) 20...Ne6= 21.de6 Be6 22.Qg3 Rad8 23.Bd5 Rfe8 24.f4 Nc4?? (better 24...Bd5 25.cd5 Nd7=) 25.Be6?? (25.Re6 Re6 26.f5+- (26.Bc4?! Re1 27.Re1 Qc4+-)) 25...Re6-/+ 26.Re6 Qe6 27.Re1 Qf5 28.Ne4 (better 28.Qh4!?-/+) 28...d5-+ (28...Qb5 29.Nf6 Kh8 30.Qc3 Qc5 31.Kh1+-) 29.Qb3 (29.Nf2-+) 29...Kg7 (29...de4?! 30.Qc4 Qd5 31.Re4=+; 29...Qf4?! 30.Qc3 Rf8 31.a4-+) 30.Ng3 (30.Qc3 A) 30...de4?! 31.Qc4 Qf4 32.g3-+; B) 30...Qf4?! 31.Nf6 d4 32.Qc4 Qf6 33.Qc7 Kg8 34.Rf1=+ (34.Qa7?? Rf8 35.h3 Qf2 36.Kh2 Qe1-+); C) 30...Re8 31.Nf2 d4-+) 30...Qf4 31.Re7 (31.Qc3 Rd7-+) 31...Kh6 (31...Kg8 32.Re1-+) 32.Qd1 (better 32.Ne2 Qg4 33.Qc3-+) 32...Qd6?? (better 32...d4!? 33.Re4 Qg5 34.a4-+) 33.Qe1 (33.Qc1 g5 34.Nf5 Kh5 35.Nd6 Nd6 36.Qc7+-) 33...Qf4?? (33...Qc5 34.Kh1 d4 35.Qe6-+) 34.Kh1?? (34.Qd1 d4 35.a4-+) 34...Nd6 (better 34...a6-+) 35.a3?? (better 35.Ne2 Qf5 36.Qh4 Qh5 37.Qf6-/+) 35...Nb5 (better 35...Re8! 36.Re8 Ne8-+) 36.Ne2-/+ The mate threat is Nxf4 36...Qd6?? (36...Qc4 37.Qg3 g5=+) 37.Ng3 (37.Qh4) 37...Nd4?? (37...f5 38.Nf5 gf5 39.Qh4 Kg6 40.Qh7 Kg5 41.Qg7 Qg6 42.h4 Kh5 43.g4 Kh4 44.Qg6 Kg3 45.Qf5 Rd7 46.Re3 Kh4 47.Qh5) 38.Qd2+- (38.Qd2 g5 39.Qd4 Qe7 40.Nf5 Kg6 41.Ne7 Kg7 42.Nd5+-) 1-0. aravind555 (1835) - profesorSLO (1825), lichess.org, 2020.

5.c4 c6 6.a4 (6.d4 ed4 7.Bd4 a6=) 6...Bb4 7.Nc3 Ne7 8.Nge2 (8.Be2 0-0=) 8...Qc7 9.Ng3 g6 (9...0-0 10.Qc2=) 10.Be2 h5 (10...Bc3!? 11.Bc3 cb5 12.ab5 Bg2=) 11.0-0+= d6 12.Bf3 c5 (12...Nd7!?+=) 13.Nge4 Nd7 (13...0-0+-) 14.Rc1 (14.Nd6 Qd6 15.Bb7 Rd8+-) 14...f5? (14...0-0-0 15.Nd5 Nd5 16.cd5+=) 15.Ng5 (better 15.Nd6!? Qd6 16.Bb7+-) 15...e4 16.Be2 Nf8?? (better 16...Ne5+-) 17.Nd5! Nd5 (17...Bd5 18.Bh8) 18.Bh8 (18.cd5?! Rh6 19.d4 h4+-) 18...Ne7 19.Bh5?? (better 19.d3+-) 19...gh5+= 20.Qh5 Nfg6 (20...Neg6+=) 21.Ne6 (better 21.Bf6!? Kd7 22.Rcd1+=) 21...Qd7= 22.Ng7?? (better 22.Nf4 0-0-0 23.Ng6 Ng6 24.Bc3 Bc3 25.Rc3=+) 22...Kd8 (22...Kf7 23.Ne8 Ke8 24.Rfd1-+) 23.Qg5 (23.Nf5 Qf5 24.Qf5 Nf5 25.Bf6 Kd7 26.Rcd1-+) 23...Kc7 24.Qf6 (24.Nf5 Rh8 25.Ne7 Ne7-+ (25...Qe7?! 26.Qg6 Bd2 27.Rc2=+)) 24...Rh8 (24...Nh8?! 25.Ne6 Kb8 26.Qh8 Bc8 27.Nf8=) 25.Ne6 (25.Rfd1 Bc8 26.a5 Ba5-+) 25...Kb8 26.d4 (26.Rc2 Bc8 27.Ng5 Rf8-+) 26...Bc8 (better 26...ed3 27.Rfd1 d2 28.Rb1-+) 27.dc5 (27.Ng5-+) 27...Qe6 28.Qe6 Be6 29.cb6 (29.c6 Ne5 30.Rb1 Bc5-+) 29...ab6 30.a5 (30.Rfd1 Ne5-+) 30…Ba5 (30...Ba5 31.Rfd1 Rc8-+) 0-1. aravind555 - aquintanag100, lichess.org, 2019.

5.c4 d5 6.Nf3 Bd6 (6...Bb4 7.cd5 Bd5 8.Nc3=) 7.Be2 (7.d4 e4 8.Nfd2 a6=) 7...Nh6 (7...a6 8.cd5 e4 9.Nd4 Bd5 10.Nc3=) 8.0-0 (8.d4 ed4 9.Bd4 a6+=) 8...0-0 (8...a6 9.d4 dc4 10.de5 fe5 11.ba6 Ra6 12.Bc4+=) 9.Qc2 (9.d4 e4 10.Nfd2 a6+=) 9...c6 10.a4 (10.Nc3 e4 11.Nd4 c5+–) 10...cb5 (10...a6 11.d4 e4 12.Nfd2=) 11.cb5 (11.ab5 a5=) 11...Nd7 12.Nh4 (12.Rc1 Rc8 13.Nc3 Nc5=) 12...Rc8+= 13.Nc3 d4 14.Nf5? (better is 14.Qb3 Nf7 15.Nd5–/+) 14...Nf5–+ 15.Qf5 dc3 16.Bc3 (16.dc3 Qc7–+) 16...Nc5 (16...Bd5 17.a5–+) 17.Qb1 (17.Bc4 Kh8–+) 17...Qe7 (17...Bd5 18.Qf5–+) 18.Bc4 Kh8 19.d3 Ne6 (19...Ne4 20.Rc1–+) 20.Rd1 (20.a5 ba5 21.Rc1 Rfd8–+) 20...f5 21.Qb2 Nc7 (21...Qg5 22.f4 Nf4 23.ef4 Qf4 24.Rac1–/+) 22.Bb3 (22.d4 Qg5 23.d5 Qg4–+) 22...Qg5 The mate threat is Qxg2 23.e4 (23.g3 f4 24.ef4 Rf4–+) 23...fe4 24.de4 (24.Qd2 Qg2! 25.Kg2 e3 26.Kg1 ed2 27.Bd2 Nd5–+) 24...Be4 25.f3 (25.g3 Bc5 26.Rd2–+) 25...Bf3 White creates threats along the open d–file. (better is 25...Rf3 26.Rd6 Qe3 27.Kh1 Rcf8–+) 26.Rd6 Qe3 (26...Bg2 27.h4 Qe7 28.Be5–/+) 27.Kh1–/+ Ne8 (27...Nb5 28.Be5 Nc3+/–) 28.Be5+= Bg2 29.Kg2 Qg5 30.Kh1 Nd6 31.Bd6?? (better is 31.Rg1 Qg1 32.Kg1+–) 31...Rfd8 (31...Rf3!?+=) 32.Rg1+/– Qf6 33.Be5 (better is 33.Qf6 gf6 34.Be7+–) 33...Qf3+/– 34.Qg2 Do you see the mate threat? 34...Qg2 35.Rg2 Rc1 36.Rg1 Rg1 37.Kg1 ½–½. Cools (2265) – Devis, Beveren, 1995.

5.c4 Nh6 6.Nf3 Be7 7.Be2 0-0 8.Qb3 Nf7 (8...a5 9.Nc3=) 9.a4 (9.0-0 a6=) 9...d6 (9...e4 10.Nd4=) 10.Nc3 (10.d4 a6+=) 10...Nd7 (10...c6 11.0-0+=) 11.d4+= e4 (11...Re8 12.d5+=) 12.Nd2 f5 13.g3 (13.a5 ba5 14.0-0 c5+=) 13...Nf6 (13...c5 14.bc6 Bc6 15.g4+=) 14.h3 (14.0-0 a6=) 14...Qd7 (14...c5 15.d5=) 15.d5 (15.a5 ba5 16.Ra5 a6=) 15...Ne5 (15...a6 16.0-0=) 16.Na2 (16.a5 a6+=) 16...a5 (16...a6 17.Nb4 Ng6 18.Nc6=) 17.ba6 (17.0-0 Qe8=) 17...Ba6 (17...Ra6 18.Nc3+=) 18.Nb4 Bb7 The isolani on a4 becomes a target (18...Bc8 19.0-0+=) 19.Nc2 (better is 19.c5 dc5 20.d6 Rf7 21.de7 (21.Be5 cd6 22.Bb5 Qd8 23.Bf6 Bf6+/–) 21...Qe7 22.Be5 Qe5 23.Nc2+=) 19...Ra7 (19...Ra5 20.Bc3 Ra7 21.a5=) 20.f4 (20.0-0 Rfa8=) 20...ef3 21.Bf3 (21.Nf3 Nf3 22.Bf3 Ne4 23.Be4 fe4=) 21...Nf3 (21...Rfa8 22.Bg2 Ra4 23.0-0+=) 22.Nf3 Rfa8 23.0-0 (23.Ncd4 Ra4 24.Ra4 Ra4+=) 23...Ne4 24.Kg2 (24.Nfd4 Nd2 25.Qb5 Qb5 26.ab5 Nf1 27.Kf1 Ra2–+) 24...Nc5 25.Qb5 (25.Qc3 Bf6 26.Ncd4 Na4–+) 25...Qb5 26.ab5 Ra2 27.Ra2 (27.Nfd4 Rb2 28.Ra8 Ba8 29.Rf5 Ne4–+) 27...Ra2 28.Nfd4 (28.Nfe1 Rb2 29.Rf5 Nd3–+) 28...Rb2 29.Ra1 (29.Rf5 Nd3 30.Kg1–+) 29...Nb3 30.Nb3 Rc2 (30...Rb3?! 31.Nd4 Re3 32.Ra7–+) 31.Kf3 (31.Kf1 Rc4 32.Nd4 Bd5 33.Nf5 Bf6–+) 31...Rc4 0–1. jaddwarrior (2015) – derrickf7 (1960), ChessWorld.net, 2015.

5.d4 Bb4 6.c3+= Ba5 7.de5 fe5 8.Qh5+/– Ke7 9.Ba3 d6+/– 10.Qg5 Kd7? 11.Qg7 Ne7+/– 12.Qg4 Ke8 13.Nf3 Bf3? 14.Qf3+– Nd7 15.Bc4 Rf8 16.Qh5 Ng6 17.Qh7 Qg5 18.0-0 Ne7 19.Qe4 Rc8 20.Be6 Qg6 21.Qg6 Ng6 22.Bb2 Ke7 23.Bd7 Kd7 24.c4 Bb4 25.Nc3 Bc3 26.Bc3 Ra8 27.a4 Rf7 28.g3 Nf8 29.f4 ef4 30.ef4 Ne6 31.a5 Rg8 32.f5 Ng7 33.Bg7 Rgg7 34.ab6 ab6 35.Kg2 Rg5 36.f6 Rg6 37.h4 Rff6 38.Rf6 Rf6 39.Rf1 Rh6 40.Rf7 Kd8 41.Kh3 Rh5 42.g4 Rc5 43.Rf4 d5 44.cd5 Rd5 45.h5 Rb5 46.h6 Re5 47.Rf8 Ke7 48.h7 (48.h7 Re3 49.Kh4 Kf8 50.h8Q Ke7 51.Qg7 Ke8 52.Qc7+–) 1–0. MarcosRamos (1695) – bdschwanke82 (1645), internet, 2007.

5.d4 ed4 6.Bd4 a6 7.Nf3 ab5 8.Bb5 =.

5.d4 ed4 6.Bd4 Ne7 7.Nf3 Ng6 8.Bd3+= Bb4 9.Nbd2 Ne7 10.0-0 d6 11.a3 Bd2 12.Qd2 Qd7 13.c4 Qg4 14.h3 Qh5 15.Be2 Qf7 16.a4 0-0 17.Qc2 Nd7 18.Bd3 Ng6 19.Nh2 Rae8 20.Ng4 f5= 21.Nh2 Nde5 22.Be2 Nh4 23.f3 Qg6 24.g4 fg4 25.Qg6= Neg6 26.hg4+= Rf7 27.Kf2 Rfe7 28.Kg3 Rf7 29.Rae1 Ref8 30.f4 Ng2 31.Rc1 Re8 32.Bf3+/– Ne3 33.Bb7+– Nf1 34.Rf1 Re2? 35.Bd5 (35.Bd5 Ne7 36.Bf7 Kf7 37.Nf3+–) 1–0. AbstractPoetic – belinky, internet, 2007.

5.d4 e4 6.Nh3 a6 7.a4 d5 8.Nf4 Qd7 9.c4 g5 10.Nd5 ab5 11.Nbc3 bc4 (11...ba4 12.Ne4 Be7 13.Be2+=) 12.Bc4+/– Bb4?? (better is 12...Kd8+/–) 13.Nb4+– c6 (13...Ra5 14.d5 Qe7 15.Qd4+–) 14.Ba3 Nh6 (14...Ra5+–) 15.Qh5 Nf7 16.Ne4 c5 (16...Kd8 17.Nf6 Qd6 18.Qf7 Qc7+–) 17.Nf6 (17.Nf6 Kd8 18.Nd7 Nd7 19.Bf7+–) 1–0. pcmvr (1700) – presort, net–chess.com, 2006.

5.Ne2 Bb4 (5...a6 6.ba6 Na6 7.d4=) 6.Ng3 a6 7.a3 Bd6 8.a4 ab5 (8...Ne7 9.Qg4 g6 10.Ne4=) 9.ab5 Ra1 10.Ba1 Ne7 11.d3 (11.Qh5 Kf8+=) 11...Bb4 (11...0-0 12.Qh5=) 12.c3 Ba5 13.e4 (13.Be2 0-0 14.0-0 d5=) 13...Ng6 14.Qb3 d5 15.Be2 (15.Nf5 Qd7 16.Nd2 Nf4=) 15...Nf4=+ 16.0-0 de4 17.de4 Ne2 (17...Be4!? 18.Bh5 Bg6=+) 18.Ne2= Be4 19.Na3 (19.Qe6!? Kf8 20.Bb2+=) 19...Bd5 (19...Qd5!? 20.Qd5 Bd5-/+) 20.c4=+ Bf7 21.Rd1 Qc8 22.Bc3 Bc3 23.Qc3 (23.Nc3 Nd7=+) 23...0-0-/+ 24.Kf1 (24.Qd3 c6-/+) 24...Qg4 (24...Rd8 25.Rd2-/+) 25.Rd3 (25.h3 Qc8-/+) 25...Bh5 26.Rf3 (26.Qd2 Qc8-/+) 26...Qe4 (26...Rd8!? 27.Qe1 c6-/+) 27.Ng3=+ Qg6 28.Nh5 Qh5 29.Qd3 f5 (better 29...Qf7!?=+) 30.Qd5+= Kh8 31.Qe5 Re8? (better 31...Qf7!?+=) 32.Qf5+- Qf5 33.Rf5 Nd7 34.Rf7 Nc5? (better 34...Rd8!?+-) 35.Rc7+- Nd3 Do you see the mate threat? 36.g3 (36.Nc2 Kg8+-) 36...Re1 37.Kg2 Threatening mate: Rc8 37...Re2?? (37...g6+-) 38.Rc8 (38.Rc8 Re8 39.Re8) 1-0. aravind555 (1825) - Horse_Move (1825), lichess.org, 2020.

5.Nf3 a6 6.a4 d6 7.c4 Ne7 8.Nc3 Nd7 9.Be2 Nc5 10.0-0 a5 11.d4 Ne4 12.Qb3 Nc3 13.Bc3 e4 14.Nd2 d5 15.c5 g6 16.Rad1 h5 17.f3 Nf5 18.Bb2 Bh6 19.f4 Bf8 20.Rc1 Rh7 21.Rc2 Kf7 22.Rfc1 Kg8 23.Kf2 (23.Ne4 Qe7 24.c6 Qe4 25.cb7 Rb8+–) 23...g5 (better is 23...Re7!?+/–) 24.Ne4 gf4 25.ef4 Kh8 26.Ng3 Ng3 27.Qg3 Rg7 28.Qh4 Rh7 29.Bd3 Rh6 30.Re2 Bc8 31.Rce1 (31.f5!? Kg7+–) 31...Bg4 32.Re8! Qe8 33.Re8 Re8 34.h3 Bc8 35.cb6 (35.Bc3 bc5 36.Ba5 Bd6+–) 35...cb6 36.f5 Bb4 37.Qf4 Kh7?? (better is 37...Rh7+/–) 38.Bc1+– (38.Bc1 Bf8 39.Qc7 Kg8 40.Qg3 Kh8 41.Bh6 Bh6 42.Qg6 Be3 43.Ke2+–) 1–0. Khakimzianov,Rinat – Musikhin,Alexandr (1990), Ufa Dautov Memorial, 2007.

5.Nf3 a6 6.Nc3=.

5.Nf3 a6 6.d4=.

5.Nf3 a6 6.Be2=.

5.Nf3 Bc5 6.Be2 Ne7 7.0-0 0-0 8.d4 Bd6 9.de5 fe5 10.Ne5 Nf5 (10...Be5 11.Be5 Ng6 12.Bg3+/–) 11.Nf3 (better is 11.Bc4 Kh8 12.Nf7 Rf7 13.Bf7+/–) 11...c6?? (11...a6 12.a4+/–) 12.Nd4 (better is 12.e4+–) 12...Nd4 13.Qd4 (13.ed4?! cb5 14.Bb5 Qh4 15.Bc4 Kh8+=) 13...Qc7?? (better is 13...Qe7+/–) 14.Qg7 1–0. Kappel,Ray – Holmquist,Marson, 2011–STP–1 Lechenicher SchachServer, 2011.

5.Nf3 Bc5 6.Be2 Ne7 7.0-0 0-0 8.d4 e4 9.dc5 ef3 10.Bf3 c6 11.bc6 Bc6 12.cb6 Qb6 13.Ba3 Re8 14.Nc3 g5?? 15.Rb1 Qc7 16.Bh5 Ng6 17.Nd5 Qd8 18.Qd4 Kh8 19.Nf6 Bg2 20.Ne8 Kg8 21.Qg7# 1–0. Bury born and bred – Papa Lazarou II, ChessWorld.net, 2004.

5.Nf3 Bc5 6.Be2 Ne7 (6...a6 7.0-0=) 7.0-0+= 0-0 8.d4 e4? (better is 8...ed4!? 9.ed4 Bd6+=) 9.dc5+– ef3 10.Bf3 Bf3 (10...Qc8 11.cb6 ab6 12.Nc3+/–) 11.Qf3+– (11.gf3?! bc5 12.Nc3 a6=) 11...c6 12.cb6 (12.Bd4 d5 13.cd6 Qd6+/–) 12...ab6+/– 13.c4 (13.Rd1 Qc7+/–) 13...d6 (13...Ng6 14.Qf5+/–) 14.a4 (14.Rd1 Ra4+–) 14...Qd7 (14...Nd7 15.bc6 Ne5 16.Be5 fe5 17.Qe4+/–) 15.Nc3 Ra7 (15...Qe6 16.Rfd1+–) 16.Rfd1 (16.bc6 Qc6 17.Qg4 d5+–) 16...c5 (16...Qe6+–) 17.Nd5 Nc8 18.Bc3 Qe6 19.a5 Nd7 20.ab6 (better is 20.a6!? Ne5 21.Qe2 Re8+–) 20...Ra1+/– 21.Ra1 (21.Ba1 Ncb6 22.Qf4 Rb8+/–) 21...Ncb6 22.Nb6 (22.Qf5 Qf5 23.Ne7 Kf7 24.Nf5 Nc4+/–) 22...Nb6+= 23.Ra6 (better is 23.Ra7 Nc4 24.b6+=) 23...Rb8?? (23...Nc4 24.Qb7 Ne3=) 24.Rb6!+– Rd8 (24...Rb6 Theme: Deflection from a8 25.Qa8) 25.Qd5 Qd5 26.cd5 Kf8 27.Rc6 Ke8 28.Kf1 (28.Kf1 Rd7 29.b6+–; 28.b6 Rd7+–) 1–0. Bittner – Toma,Dana, 1987.

5.Nf3 c6 6.a4 Nh6 7.Be2 (7.d4 ed4 8.Bd4 a6=) 7...d5 8.c4 Bd6 (8...dc4 9.Bc4 Nf5 10.0-0=) 9.Qb3 (9.d4 e4 10.Nfd2 f5+=) 9...Nd7 (9...dc4 10.Qc4 Qd7 11.Nc3=) 10.d4 e4 (10...cb5 11.cb5 e4 12.Nfd2+=) 11.Nfd2 (11.bc6 Bc6 12.cd5 Bb7+/-) 11...Qc7 (11...dc4!? 12.Nc4 Be7+=) 12.bc6 Qc6 13.cd5 Qd5 14.Qd5 Bd5 15.Nc3 Bb7 16.Nde4 Bb4 17.Bf3 Rb8 18.0-0 0-0 19.Rfc1 f5 20.Ng5 Nf7 (20...Bf3 21.Nf3 Bc3 22.Bc3+/-) 21.Nf7 Bf3 22.gf3 (22.Nh6 gh6 23.gf3 Nf6+-) 22...Rf7 23.Nd5 Bd6 24.Rc6 Bf8 25.Rac1 a6 (25...b5 26.a5+-) 26.Rc7 (better 26.Kg2!?+-) 26...b5+/- 27.a5 Bd6? (better 27...b4+/-) 28.R7c6+- Bf8 (28...Be7 29.Ra6 b4 30.e4+-) 29.Ra6 b4 30.Rc7 Nf6 31.Nf6 gf6 32.Rf7 (32.Rcc6 Bg7+-) 32...Kf7 33.d5 Bg7 (33...Rb5 34.e4 Be7 35.Ra7+-) 34.Ra7 Kg6 35.d6 Bf8 36.d7 Be7 (36...f4 37.Rb7! Ra8 38.a6+- (38.ef4?! Be7+-)) 37.a6 Rd8 (37...Kf7 38.Rb7 Rg8 39.Kf1+-) 38.Rb7 Bc5 39.a7 (better 39.Bd4 Bd6 40.Bb6 Bc7+-) 39...Ba7 40.Ra7 1-0. Mely (2285) - Fingers420 (2050), ChessWorld.net, 2016.

5.Nf3 c6 6.d4 e4 7.Nfd2 c5 (7...cb5 8.Bb5 f5 9.Qh5 g6 10.Qh3=) 8.c4 (8.Qh5 g6 9.Qh4 d5 10.dc5 bc5+=) 8...cd4 (8...a6 9.d5 f5 10.ba6 Na6 11.g4 fg4 12.Ne4+/–) 9.Bd4 Bb4 (9...f5 10.Be2+=) 10.a3+/– Bc5 (10...Ba5!?+/–) 11.Bc5+– bc5 12.Qh5 g6 13.Qc5 Qe7 (13...Nh6 14.Qb4+–) 14.Qe7 Ne7 (14...Ke7 15.c5+–) 15.Nc3 0-0 (15...f5+–) 16.Nde4 d5 (16...Be4 17.Ne4 Kg7 18.Nd6+–) 17.Nd6 (17.Nc5 Bc8+–) 17...Bc8 18.Nd5 (18.cd5 Rd8 19.Nde4 Nd7+–) 18...Nd5 19.cd5 Nd7 (19...Rd8 20.Ne4+–) 20.Rc1 (20.Rd1 Rd8+–) 20...Nb6 (20...Rd8 21.e4+–) 21.e4 Bd7 (21...Rd8 22.Nc4+–) 22.Rc7 (better is 22.Bd3 Rfb8+–) 22...a6 (22...Rfd8 23.Kd2+–) 23.ba6 Ba4 (23...Rfd8 24.Kd2+–) 24.Rb7 Rab8 (24...Nc8 25.Nc8 Rfc8 26.Kd2+–) 25.Kd2 Rfd8 (25...Nd7 26.f4+–) 26.Be2 Rb7 (26...Nd7 27.Rc1 Nf8 28.Nf7+–) 27.ab7 Kf8 (27...Nd7 28.Rc1 Kf8 29.Rc7+–) 28.Rb1 (28.Rc1 Rb8+–) 28...Nd7 29.Rb4 (better is 29.f4+–) 29...Ke7 (29...Nb8 30.Nc4 Bd7+–) 30.Nc8 Ke8 31.Ra4 Ne5 32.b8Q f5 33.Qe5 Kf7 34.Ra7 Kf8 (34...Rd7 35.Rd7 Kf8 36.Qh8) 35.Qh8 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Nf3 d6 6.Bc4 (6.d4 a6=) 6...Nd7 (6...d5 7.Be2=) 7.d4 (7.0-0 d5 8.Be2 a6=) 7...e4 (7...d5 8.Bd3 e4 9.0-0–+) 8.Nh4 (better is 8.Nfd2+=) 8...d5+– 9.Qh5 g6 10.Ng6! hg6 A pinning theme 11.Qh8 Nh6 (11...Ne7 12.Be2 a6+–) 12.Ba3= Nf7 13.Qg8 dc4 14.Qg6 Ba3 (14...c5 15.dc5 Bc5 16.Bc5 Nc5 17.Nc3=) 15.Na3+= Bd5 (15...a6 16.Qg8 Nf8 17.ba6 Ra6 18.Nc4=) 16.Qf5 (16.Qg8 Nf8=) 16...Nf8 17.0-0 (17.Nb1 c6 18.Nc3 Nd6=) 17...Nh6 (17...a6 18.c3=) 18.Qh5 (18.Qf4 Nf7+=) 18...Nf7= 19.Nb1 Qd7 (19...c6 20.Nc3=) 20.Nc3 Bb7 21.a4 0-0-0 (21...a6 22.ba6 Ra6 23.a5+=) 22.a5+/– Ne6 (22...Nd6!?+/–) 23.ab6+– ab6 (23...Rh8 24.Qf5 Qd6 25.f4 ef3 26.ba7+–) 24.Ra4 (24.Qf5 Nd6 25.Qf6 Rf8+–) 24...Rh8 (24...Nd6 25.Rfa1 c6 26.bc6 Bc6 27.Ra7+–) 25.Qf5 Qd6 (25...Rh6+/–) 26.g3 (better is 26.h3+–) 26...Nfg5+= 27.f4 (27.Kg2 Qd7 28.f4 (28.Qf6?? Nf4 29.Kh1 Rh2 30.Kh2 Nf3 31.Kh1 Qh3) 28...ef3 29.Kg1 f2 30.Kf2 Rh2 31.Ke1+=) 27...ef3+= 28.d5 Kb8 (28...Qc5 29.Re1 f2 30.Kf2 Rh2 31.Kg1 Rd2–+) 29.de6?? (better is 29.Rc4 Rh5 30.Rh4= (30.Qf6 Nh3 31.Kh1 Nf2 32.Rf2 Qg3 33.Qf3 Rh2 34.Rh2 Qf3 35.Kg1 Qe3 36.Rf2 Ng5–+)) 29...Nh3 (29...Qd2 30.Rf3 Bf3 31.Ra8 Ka8 32.Qf3 Nf3 33.Kf1 Rh2 34.e7 Qf2) 30.Kh1 (30.Qh3 Rh3 31.e7 Qe7 32.Nd1–+) 30...f2 (30...Qd2 31.Qh3 Rh3 32.Ra8 Ba8 33.Rf2 Qe1 34.Rf1 Qf1) 31.e4 Qd4 (31...Qg3 32.Ne2 Qe3–+) 32.Ra3+= Qd6 33.Qf6 (33.Raa1 Qg3 34.Ne2–+ (34.hg3?? Nf4 35.Qh5 Rh5)) 33...Rf8–+ 34.Qg7 Qa3 Do you see the mate threat? 35.e7?? (35.Kg2!? Ng5 36.Rf2 Rf2 37.Kf2 Ne6 38.Qe5–+) 35...Re8 (35...Be4 36.Ne4 Qf3) 36.Qf7 Qe7 (36...Qc3 37.Qe8 Ka7 38.Kg2–/+) 37.Qe7 Re7 The mate threat is Rxe4 38.Kg2 Ng5 39.Rf2 Ne4 40.Ne4 Be4 41.Kf1 Bh7 (41...Kb7 42.h4–+) 42.g4 Re5 43.h4 Rb5 44.g5 (44.c3 Rb3–+) 44...Rf5 (44...c3!? 45.Rg2–+) 45.Rf5 Bf5 46.h5 (46.c3 Bg6 47.Ke2 b5–+) 46...Kc8 (46...Bc2 47.Ke2–+) 47.g6 (47.c3 b5–+) 47...Kd8 (better is 47...Bc2!? 48.Ke2–+) 48.c3 (48.g7 Bh7 49.Kf2 Ke7–+) 48...c5 (48...Ke7 49.Kf2–+) 49.Kf2 (49.g7 Bh7–+) 49...Ke7 50.Kf3 Kf6 (50...Kf6 51.h6 Kg6–+) 0–1. Cascales,A – Blaya,M, Santomera op, 1993.

5.Nf3 e4 6.Nd4 c5 7.Nb3 a5 8.a4 Ne7 9.Be2 h5? (9...Ng6 10.0-0+=) 10.0-0 Ng6 (10...d5 11.Bh5 g6 12.Bg4+/–) 11.c4 Bd6 12.g3 Be5 13.Be5 Ne5 14.Nc3 0-0 15.Qc2 f5 16.Bh5 d5 17.cd5 c4 (better is 17...Bd5!? 18.Be2 Qd7+=) 18.Nd4+– Bd5 19.Nd5 Qd5 20.f3 g6 21.fe4 Qe4 22.Qe4 fe4 23.Rf8 Kf8 24.Rf1 Kg7 (better is 24...Ke7!? 25.Be2 Nbd7+/–) 25.Ne6+– Kh6 26.Be2 Nbd7 27.Bd1 (better is 27.Rf4 g5 28.Re4+–) 27...Re8+= 28.Nf4 Rf8 ½–½. valpa – footyhead, playchess.de, 2003.

5.Nf3 Ne7 6.c4 c6 7.a4 cb5 8.ab5 a6 9.Nc3 ab5 10.Ra8 Ba8 11.Nb5 Bf3?? (better is 11...Ng6+=) 12.Nd6 (12.gf3?! Nec6+=; 12.Qf3?! Ng6+/–) 1–0. GuestTVJC – GuestTXBK, freechess.org, 2017.

5.f4 ef4 6.ef4 Qe7 7.Qe2 a6 =+.

6.c4 a6 7.cd5 Bd5 8.ba6=.

6.c4 Bc5 7.Be2 Ne7 8.0-0 e4 9.Nd4 Qd6 10.Nb3 Nd7 11.Nc5 Nc5 12.Qc2 0-0-0 13.g3 g5 14.d4 ed3 15.Bd3 Nd3 16.Qd3 dc4 17.Qc4 h5 18.Nc3 f5 19.Rad1 Qg6 20.Ne2 h4? 21.Rd8?? Rd8= 22.Be5 Rd7 23.Rc1 c5 24.bc6 Bc6 25.Nd4 Rd4? 26.Qd4 hg3 27.fg3 Qe6 28.Bd6 Qa2?? 29.Kf1 Qg2 30.Ke1 Qg1 31.Kd2 Qg2 32.Kd1 Kb7 33.Qd2 Bf3 –/+ (34.Kc2 Be4 35.Kd1 Qg1 36.Qe1 Bf3 37.Kc2 Qh2 38.Kb1 Be4 39.Ka1 Qh8 40.Ka2 Qg8 41.Kb2 Nd5–+) 0–1. valpa – JuliusCaesar, playchess.de, 2003.

6.c4 c6 7.cd5+= cd5 8.Nc3 (8.d4 e4 9.Nfd2 Ne7+=) 8...Ne7 (8...Bd6 9.d4 Ne7 10.Rc1=) 9.Qb3 (9.d4 e4 10.Nd2 a6+=) 9...g6 (9...Nf5 10.d4 e4 11.Nd2+=) 10.Be2 Bg7 11.0-0 0-0 12.Ne4 (12.d4!?+-) 12...Kh8 (12...a5 13.Nc3+=) 13.Ng3+= a6 14.a4 (14.d4 e4 15.Nd2 f5=) 14...Nd7+= 15.ba6 (15.d4 e4 16.Nd2 f5+=) 15...Ba6 16.Ba6 Ra6 17.Qb5 (17.d4 e4 18.Nd2 f5+=) 17...Ra5=+ 18.Qb4 Nc6 19.Qc3 d4?? (better 19...Qa8=) 20.Qc6+- de3 (20...f5 21.Qc2+-) 21.de3 e4 (21...Qc8 22.Qe6+-) 22.Ne1 (better 22.Ne4 Ne5 23.Be5 fe5+-) 22...f5 23.Bg7 Kg7 24.Nc2 (better 24.Rd1 Ne5 25.Qc2 Qe8+-) 24...h5?? (better 24...Rc5 25.Qd6 Rc2+=) 25.Nd4+- Ne5 (25...Nc5 26.Rfd1 Qf6 27.Ndf5 Kh7 28.Nd6 Qf2 29.Kh1 Qe3 30.Nc4+-) 26.Qc3 (better 26.Ne6 Kf6 27.Nd8 Nc6 28.Nc6 Rc5+-) 26...Kh6 (26...Rf6 27.Rfd1 Qe8 28.Nb3+-) 27.Ne6 (better 27.Nge2 Qd7 28.Nf4+-) 27...Qe7 (27...Qf6 28.Qb3 Rfa8+-) 28.Nf8 h4 (28...Qf8 29.Qd4 Rc5 30.Rab1+-) 29.Ng6 Kg6 30.Ne2 h3 (30...Kh7 31.Nf4+-) 31.Nf4 Kh6 32.Nh3 (32.Nh3 Qf6 33.Qd4+-) 1-0. aravind555 – KirillGrechihin, lichess.org, 2019.

6.c4 d4 7.ed4+- White launches an attack 7...Bf3? (better 7...e4 8.Nh4 Nh6+-) 8.Qf3+- (8.gf3?! ed4 9.Qe2 Ne7+=) 8...e4 (8...Nd7 9.Bd3 g6 10.0-0+-) 9.Qe4 Qe7 10.Qe7 (10.Bd3 f5 11.Qe3 Nh6+-) 10...Be7 11.g3 Nd7 12.Bg2 Rb8 (12...0-0-0 13.a4+-) 13.0-0 c5 (13...Kd8 14.Nc3+-) 14.d5 (better 14.bc6 Nf8+-) 14...Ne5 15.Re1?? (better 15.Na3+-) 15...Nd3+- 16.Re2 (16.Na3!? Nb2 17.Re3+-) 16...Nb2 17.d6 Nc4 18.de7 Ne7 19.Nc3 Kf7 (19...Kf8+=) 20.Nd5 (better 20.Rae1 Ne5 21.f4+-) 20...Nd5?? (better 20...Nf5=) 21.Bd5+- Kf8 (21...Kg6 22.Bc4 Rbd8 23.Rae1+-) 22.Bc4 Re8 23.Re8 (23.Rae1 Re2 24.Re2 h5+-) 23...Ke8 24.Re1 Kd8 25.Kg2 h6 26.Kf3 Rf8 27.Kg4 f5 (27...g6 28.Re6+-) 28.Kh5 f4 29.Kg6 fg3 30.fg3 (worse 30.hg3 Rf2 31.Kg7 Rg2+-) 30...Rf2 31.Re2 Rf1 32.Kg7 Rh1 (32...h5 33.h4 Rf3 34.Re3+-) 33.Kh6 Rh2 (33...Rf1+-) 34.Rh2 (34.Rh2 Kc7 35.g4+-) 1-0. aravind555 - Talal022, lichess.org, 2020.

6.c4 e4 7.Nd4 Bc5? 8.Ne6+- Qd6 9.Ng7 (9.cd5 Ne7+-) 9...Kf7 (9...Kd8 10.Qg4 Qd7 11.Ne6 Kc8 12.Nc3+-) 10.Nf5 Qe6?? (10...Qd7 11.Qg4 Ke8 12.cd5 Qd5 13.Nc3+-) 11.Qh5 (better 11.Qg4+-) 11...Kf8 12.Qg4 (12.cd5 Qd5 13.Nc3 Qd7+-) 12...Qf7 (12...Qd7 13.f3+-) 13.cd5 Bc8 (13...Ne7 14.Bc4 Rg8 15.Qe4 Nf5 16.Qf5 Rg2 17.Qf6 Qf6 18.Bf6 Bd6+-) 14.Bc4 (better 14.Qe4 a6+-) 14...Ne7? (better 14...Qd7 15.d6 Qf5 16.Qf5 Bf5+-) 15.d6!+- Bf5 (15...cd6 16.Bf7) 16.de7 (16.Bf7?! Bg4 17.Bb3 Bd6 18.Bf6 Rg8 19.Be7 Be7 20.Bg8 Kg8=) 16...Ke8 (16...Be7 17.Bf7 Bg4+-) 17.Bf7 Kf7 18.Qf5 Be7 19.Qe4 (better 19.Qd5!? Kg7 20.Qa8 Bd6+-) 19...Nd7 20.0-0 (20.Qd5 Kg7 21.Qd7 Rhe8+-) 20...Rae8 21.Qd5 Kg7 22.Qd7 Rhf8 23.Nc3 (better 23.Rc1 c5 24.bc6 Kg6+-) 23...Kf7 24.Ne4 (24.Nd5 Rh8 25.Bf6 Rhf8 26.Be7 Kg7 27.Bf6 Kg6 28.Qg7 Kf5 29.Qg5 Ke6 30.Nf4 Kd7 31.Qf5 Kd6 32.Qd5) 24...Rd8 25.Qg4 (25.Qc7 Ke8 26.Qc6 Kf7 27.Bf6 Bf6 28.Qf6 Kg8 29.Qe6 Rf7+-) 25...h5 26.Qh5 Kg8 27.Qg6 Kh8 28.Bf6 (28.Ng5! Rd2 29.Qh7) 28...Bf6 29.Nf6 Rd6 30.Qh7 1-0. aravind555 – msFrol, lichess.org, 2018.

6.c4 Nh6 7.cd5+= Bd5 (7...Qd5 8.Nc3 Qd7 9.d4 ed4 10.Nd4+=) 8.Nc3 Bb7 (8...a6 9.Nd5 Qd5 10.ba6+=) 9.Be2 (9.d4 Nd7+=) 9...Bd6 (9...a6 10.0-0=) 10.Bc4 (10.d4 a6+=) 10...Nf7 (10...a6 11.d4=) 11.Bf7 (11.d4 a6+=) 11...Kf7= 12.0-0 (12.d4 a6=) 12...Re8 (12...a6 13.d4=) 13.Qc2 (13.d4 a6=) 13...Kg8 (13...e4 14.Nh4=) 14.a4 (14.e4 a6=) 14...c5 (14...e4 15.Ne1=) 15.e4= Nd7 (15...a6 16.Qb3 Kh8 17.Rfc1=) 16.Nh4 (16.Qd3 Be7=) 16...Nf8 17.Nf5 (17.Qb3 Ne6=) 17...Ng6 (17...Ne6 18.Qb3=) 18.f3 (18.a5 ba5 19.Na4 Bf8 20.Qc4 Kh8 21.Nc5 Rc8 22.Nb7 Rc4 23.Nd8 Rd8=) 18...Nf4 (18...c4 19.a5=) 19.g3 (19.Qb3 Kh8=) 19...Ne6 20.Qb3 Kh8 21.Nd5 Nd4 (21...Rc8 22.d3=) 22.Nd4 (22.Bd4 ed4 23.a5 ba5+=) 22...cd4 (22...ed4 23.Rae1+=) 23.Rfc1 (23.Rac1 a6+=) 23...Bc5 (23...f5 24.Rc2+=) 24.d3 (24.Ba3 Ba3 25.Ra3 Bd5 26.Qd5 Rc8=) 24...Bd5–/+ 25.Qd1?? (better is 25.Qd5 Qd5 26.ed5–/+) 25...Bf7 0–1. GuestVGMK – GuestXJgggee, freechess.org, 2017.

6.d4 ed4 (6...e4 7.Nfd2=) 7.ed4 (7.Nd4 a6+=) 7...Nd7 (7...a6 8.a4=) 8.c4 (8.Bd3 Qe7 9.Be2 Qb4 10.Bc3 Qa4+=) 8...dc4 (8...Qe7 9.Qe2=) 9.Bc4+= Ne7 (9...Qe7 10.Kf1+=) 10.Nh4 (better 10.0-0+-) 10...g5?? (better 10...a6 11.Nc3 Qc8+=) 11.Qh5+- Ng6 12.Ng6 (12.Ng6 Bb4 13.Nd2+-) 1-0. aravind555 - memory_persistent, lichess.org, 2019.

6.Be2 Bd6 7.0-0 Ne7 8.c4 Nd7 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 0-0 12.Qb3 Kh8 13.a4 Qe7 14.Nh4 (14.a5 ba5 15.Ra5 c6=) 14...f5 15.Bh5?? (better 15.Nf3=) 15...Qh4-+ 16.Bf3 (16.Bf7 e4 17.g3 Qg4-+) 16...e4 (better 16...Bf3 17.gf3 a6 18.Qd5-+) 17.Be2 (17.g3 Nc5 A) 18.gh4?? Nb3 19.Rab1 Nd2 (worse 19...ef3 20.Rb3 c5 21.h5-+) 20.Bd2 ef3-+; B) 18.Qc4-+) 17…Qh2 0-1. aravind555 (1695) - Bjjmaster (1685), lichess.org, 2020.

6.Be2 Nd7 7.0-0 Bd6 8.c4 dc4 9.Bc4 Ne7 10.d4 Bd5?? (10...a6 11.Nc3+=) 11.Qb3?? (11.Bd5 Nd5 12.de5 Be5 13.Ne5 (13.Qd5?! Bb2 14.Qe4 Ne5 15.Ne5 fe5=) 13...Ne5 14.Be5+–) 11...Bc4 (11...Bf3 12.gf3 ed4 13.Bd4=) 12.Qc4 Nf5 (12...a6 13.ba6 e4 14.Nfd2+/–) 13.e4 (13.de5!? fe5 14.Qe6 Ne7 15.Ne5 Ne5 16.Be5 Be5 17.Qe5+/–) 13...Nd4+/– 14.Bd4 ed4 15.Nd4 Ne5 (15...Nc5 16.Nf5 g6 17.Nd6 Qd6 18.Nc3+=) 16.Qd5 Be7 17.Nf5 (17.Nc3!?+/–) 17...Qd5+= 18.ed5 Bc5 (18...g6!? 19.Ne7 Ke7+=) 19.Ng7+/– Kf7 (19...Kd7 20.Nd2+/–) 20.Ne6+– Bd6 21.Nc3 Ng4 (21...a6!?+–) 22.h3 Nh6 (22...Ne5 23.Ne4+–) 23.Ne4 Be5 (23...f5 24.Nd6 cd6 25.Rac1+–) 24.Rac1 Nf5 25.f4 Bd6 26.Nd6 Nd6 (26...cd6 27.Rc7 Ne7+–) 27.Rc7 Kg6 (27...Ke8 28.Re1 h5 29.Nd4 Kf8 30.Rd7+–) 28.Rg7 (28.f5 Kh5 29.Rf4 Rac8+–) 28...Kh6 (28...Kh5 29.g4 Kh6 30.a4+–) 29.Rg4 (29.f5 Rhe8 30.Rd7 Nb5+–) 29...Rhg8 (29...f5 30.Rh4 Kg6+–) 30.Rh4 Kg6 31.f5! Nf5 32.Rg4 Kf7 33.Rf5 (33.Rg8 Rg8 34.Rf5 Ke7+–) 33...Rg4 34.hg4 Rg8 (34...Ke7 35.Kh2+–) 35.Rf4 (better is 35.g5 Rc8+–) 35...Ke7 36.Kf2 Rc8 37.Ra4 (37.Rd4 Kd6 38.a4 Ke5+–) 37...Rc2 (37...Kd6 38.Ra7 Kd5 39.Nf4 Kc5 40.a4+–) 38.Kf3 Rc3 (38...Kd6 39.Nf4+–) 39.Kf4 (39.Ke4!? Kd6+–) 39...Kd6 40.Ke4 (40.Kf5 Re3+–) 40...Rg3 0–1. GuestQKPQ – Ancheron, freechess.org, 2017.

6.Be2 Nd7 7.0-0 Bd6 8.c4 d4 (better is 8...dc4!? 9.Bc4 a6+=) 9.ed4+/– Qe7 10.c5 bc5 11.dc5 Bc5 12.d4 Bd4 (12...Bd6!?+/–) 13.Nd4+– (worse is 13.Bd4 ed4 14.Nd4 Ne5+/–) 13...ed4 14.Bd4 0-0-0 (14...Ne5!?+/–) 15.Ba7+– Ne5 (15...Qe5 16.Nd2+–) 16.Qc2 Rd7?! (16...Qf7+–) 17.f4 Ng6 18.Bg4 Kd8 19.Bd7 Qd7 20.Rd1 Qd1 (20...Bd5 21.Nc3 N8e7 22.Nd5 Nd5+–) 21.Qd1 Ke8 22.Qc2 N8e7 (22...c5 23.Qc5 N8e7 24.Qc7+–) 23.Qc7 Bd5 24.Nc3 Rf8 25.Nd5 Nd5 26.Qc6 1–0. pcmvr – aliwood, internet, 2005.

6.Qh4 Be7 7.Bd3? f5 8.Qc4?? d5?? 9.Qb3= Bf6 10.c4 e4 11.Be2 d4 12.ed4 Bd4 13.Bd4 Qd4 14.Nc3 Nd7 15.Nh3 Nc5 16.Qc2 0-0-0 17.0-0 h6 18.Nf4 g5 19.Ng6 Rh7–/+ 20.Bh5 Nf6 21.Ne2? Qd6 22.Ng3 Nh5 23.Nh5 Qg6 24.Ng3 f4 25.Ne2 h5 26.f3 g4 27.fg4 Qg4 28.Rf4 Qe2 29.Raf1 e3 30.Qf5 Kb8 31.Qg5 Ne6 32.Rf8 Nf8 33.Qd8 Bc8 34.Qf8 ed2 35.Qf3 Re7 (35...Re7 36.Qe2 Re2–+) 0–1. elsh1403 – kay88 (1695), internet, 2011.

6.Qh4 Be7 7.Nf3 d6 8.Be2 Qd7 9.0-0 a6 10.c4 ab5 11.cb5+= Qe6 12.Nc3 Nd7 13.d4 g5 14.Qh5+/– Kd8 15.de5 Ne5 16.Ne5 de5 17.Bf3 Bf3+/– 18.Qf3 Rb8 19.Rfd1 Ke8 20.Qh5 Qf7 21.Qg4 Nh6? 22.Qd7+– Kf8 23.Qc7 Kg7 24.Nd5 Bc5+/– 25.Qf7 Kf7 26.h3 Nf5 27.Nc7 Rhd8 28.a4 Nd6 29.Na6 Rbc8 30.Nc5 bc5 31.Ba3 Nc4? 32.a5?? Rd1=+ 33.Rd1 Na5 34.Rd7 Ke6 35.Rh7 c4? (35...c4 36.e4 f5 37.Rh6 Kf7 38.ef5 Rb8+–; better is 35...Nc4 36.Ra7 Kd5=). stoker – mastermind, Live Game Caissa's Web, 2005.

6.Qh4 Be7 7.Nf3 Bf3 8.gf3 d6 9.a4 Nd7 10.Bc4 f5 11.Qg3 Ngf6 12.Nc3 Nc5 13.d4 ed4 14.ed4 Ncd7 15.0-0-0 Nh5 16.Qh3 Bg5 17.Kb1 Kf8 18.Nd5 Nhf6? 19.Rhe1 Nd5+/– 20.Bd5 Rb8 21.Re2 Nf6 22.Bb3 Qd7?? 23.Rde1 Re8 24.Qf1 Kg7 25.d5 Re2 26.Re2 Re8 27.Re6 Kf7?? 28.Qe2?? Re7 29.f4 Bh4 30.c4?? Ne4 31.f3 Nc5 32.Rf6?? Bf6–+ 33.Bf6 Kf6 34.Qb2 Kf7 35.Bc2 Kg8 36.Qf6 Rf7 37.Qg5 Qe7 38.Qg2 Qe1 39.Ka2 Re7 40.h4 Re2 41.h5 Rg2 42.hg6 hg6 43.Kb2 Rc2! 44.Kc2 Qe3 45.Kd1 Qf3 46.Kc2 Qf4 47.Kd1 Qc4 48.Kd2 Qa4 49.Ke3 Qb5 (49...Qb5 50.Kf4 Qb4 51.Kg3 Ne4 52.Kg2 Qe1 53.Kh2 Qf2 54.Kh3 Qg3; 49...Qa3 50.Kf2 Ne4 51.Ke2 Qb2 52.Ke3 Qd2 53.Kf3 Qf2) 0–1. elsh1403 – ranger52, internet, 2011.

6.Qh4 Bg7 7.f4 d6 8.Nf3 Nd7 9.Be2 Qe7 10.0-0 0-0-0 11.d4 ef4–/+ 12.Qf4 h5 13.a4 g5 14.Qg3 h4 15.Qf2 g4?? 16.Nfd2?? Bh6= 17.e4 g3 18.hg3 Be4 19.Ne4= Qe4 20.Bf3 Qe7=+ 21.a5?? Be3–+ 22.ab6 Bf2 23.Kf2 hg3 24.Kg1 Qe3 (24...Qe3 25.Rf2 Qf2) 0–1. elsh1403 – kay88 (1685), internet, 2011.

6.Qh4 Bg7 7.f4 ef4 8.Qf4 Ne7 9.Bc4?? d5 10.Bb3 Nd7 11.Nf3 Nc5 12.Bf6?? Bf6?? 13.Qf6+/– Rf8 14.Qh4 Nb3 15.ab3 h5 16.0-0 Qd7 17.Ne5 Qd6 18.Rf8 Kf8 19.d4 Nf5 20.Qg5 Kg7 21.Nd2 Qf6 22.Qf6 Kf6 23.Rf1 Kg7 24.c4 dc4 25.bc4 Ne3? 26.Rf7+– Kh6 27.Rc7 Bg2 28.Ndf3 Bf3+= 29.Nf3 Nf5 30.Rc6 a6 31.Rb6 a5? 32.Ra6 Rc8 33.Rc6?? Ra8? 34.Ra6 Rc8 35.c5 Rd8 36.Ra5 Ne3 37.b6 Nd5 38.b7 Rb8 39.c6 Nb6 40.Ra6 Nc8 41.Ra8 (41.Ra8 Kg7 42.Rb8 Nd6 43.Rg8 Kf7 44.b8Q Ke6 45.Rg6 Kd5 46.Qd6 Kc4 47.Qc5 Kb3 48.c7 Ka4 49.Rb6 h4 50.Qb4) 1–0. elsh1403 – beuafort, internet, 2011.

5.Qg4 g6 6.Qf3 c6 7.c4 (7.d4 ed4 8.ed4 Bb4 9.Bc3 Qe7 10.Qe2 Bc3 11.Nc3 Bb7+=) 7...Bb4 (7...a6 8.d4 ed4 9.ed4 Bb4 10.Bc3 Qe7 11.Qe2 Bc3 12.Nc3 ab5 13.cb5=) 8.Qg3 (8.a3 Ba5 9.Bc3 Bc3 10.Nc3=) 8...Bb7 (better is 8...d6!?=) 9.Be5!+/– c5 (9...fe5 10.Qe5 Double attack) 10.Bb2 (10.a3 Ba5+–) 10...Nh6 (10...d5 11.a3 Ba5 12.Nf3+/–) 11.Bd3 (11.Qh4 Nf5 12.Qf6 Qf6 13.Bf6 0-0+–) 11...Rg8 (11...Nf7!?+/–) 12.Nf3+– d6? (better is 12...Nf7+–) 13.Qh4 (13.a3 Ba5 14.Qh4 Nf7 15.Bf6 g5 16.Qh7 Qf6 17.Qg8 Ke7+–) 13...Bf3 (13...Nf7 14.Qh7 (14.Qf6?! Qf6 15.Bf6 Nd7+–) 14...Rf8 15.Qg6+–) 14.gf3 Nf5 (14...Nd7 15.Qh6 Qe7+–) 15.Qe4 Ne7 16.Qa8 Nd7 17.Qa7 1–0. jaddwarrior (2045) – simonzxcv (1855), ChessWorld.net, 2016.

5.Qh5 g6 6.Qd1 Bb7 7.Nf3 c6 8.a4 cb5 9.ab5 Ne7 10.c4 (10.d4 ed4 11.Bd4 Bd4 12.Qd4 Bf3 13.gf3 d5+/–) 10...d6 11.Be2 Nd7 (11...d5 12.0-0+=) 12.0-0 a6 13.Nc3 ab5 14.Nb5 Ra1 15.Qa1 Bc6 (15...e4 16.Ng5! Ne5 17.Qa7+/–) 16.d4 Bb5 17.cb5 ed4 18.ed4 Bb4 19.Qa4 Ba5 20.d5 0-0 21.Nd4 Nc5 22.Qa2 Rf7 23.Nc6 Nc6 24.dc6 Kg7 25.Bf3 (25.Qd5 Re7 26.Qf3 Ne4+–) 25...Nd3 26.Bd4 Ne5 27.Bd5 Re7 28.Rc1 (28.Qa3 Nf7+–) 28...Nd3+/– 29.Rd1 Nb4 30.Qb3 Nd5 31.Qd5 Qe8 (31...Qc7 32.h3 h6 33.Bb2+–) 32.Be3 (better is 32.g4!? Qc8 33.h3+–) 32...Bb4+/– 33.g3 Bc5 34.Bc5 dc5 35.Qd6 (better is 35.Kg2+/–) 35...c4 (35...c4 36.c7 Re1 37.Re1 Qe1 38.Kg2 Qe4 39.Kf1 Qb1 40.Ke2 Qe4 41.Kd2 c3 42.Kc3 Qe1 43.Kc4 Qe4 44.Qd4 Qc2 45.Qc3 Qe4 46.Kb3 Qe6 47.Qc4 Qc8+–) 0–1. GuestHZLJ – GuestJHBF, freechess.org, 2017.

5.a4 cb5 6.ab5 d5 7.d4 Nh6? (better is 7...e4!?+=) 8.de5+– fe5 9.Be5 Bb4 (9...Be6 10.Ne2+–) 10.c3 Bd6?? (10...Bf8+–) 11.Bg7 Rg8 12.Bh6 Be5 (12...Be6 13.Nh3 Bf7+–) 13.Qh5 Rg6 14.Qe5 Qe7 (14...Kf7 15.Bf4 Kg8 16.Nf3+–) 15.Qh8 Qf8 1–0. DEFFM – burnRiff, freechess.org, 2017.

5.a4 c5 6.c4 (6.Be5 d5 7.Bf4 Be6+/–) 6...Ne7 (6...Bb7 7.d4 cd4 8.ed4 Bb4 9.Bc3=) 7.Ne2?? (better is 7.Qh5 Ng6 8.f4+–) 7...Qc7 8.d3 Nf5 9.e4 Nd6 10.Nbc3 Be7 11.Nd5 Qd8 12.g3 0-0 13.Bh3 Bb7 14.0-0 Bd5 15.ed5 g5 16.g4 Rf7 17.Ng3 h5 (17...a6 18.Qf3+/–) 18.Ne4 (18.Nh5!? a6 19.Bg2+–) 18...hg4+/– 19.Qg4 (better is 19.Bg4 f5 20.Nd6 Bd6 21.Bh5+/–) 19...Kg7? (19...f5 20.Qh5 fe4 21.Be5 Bf6 22.Qg6 Rg7 23.Qf6 Qf6 24.Bf6 Rg6+/–) 20.Nd6 Bd6 21.Qf5 (21.f4!? Qe7+–) 21...Qe7 (21...a6 22.Bg2+/–) 22.Bg4 a6 23.Kh1 e4?? (23...Kf8!?+/–) 24.de4 (better is 24.Qg5! Kf8 25.Qh6 Ke8+–) 24...ab5? (better is 24...Be5!? 25.Rfb1 Bb2 26.Rb2 Rf8+–) 25.ab5 (25.Qg5! Kf8 26.Qh6 Ke8+–) 25...Ra1 26.Ba1 Rf8 (26...Bf4 27.h4! Be5 28.Bh5+–) 27.Bh5 (better is 27.Qg5! Kh8 28.Bf5+–) 27...Rg8? (27...Kh8+–) 28.Rg1 Bf4 (28...Be5 29.Be5 fe5 30.Rg5 Kh8 31.Bg6+–) 29.h4 Kf8 (29...Be5 30.hg5 Kf8 31.gf6 Qf6 32.Be5 Rg1 33.Kg1 Qf5 34.ef5 d6 35.Bd6 Kg7 36.Bb8 Kf6 37.d6 Kg7 38.d7 Kh6 39.Bf4 Kg7 40.f3 Kf6 41.d8Q Kg7 42.f6 Kh7 43.Qe7 Kg8 44.Qg7) 30.hg5 (better is 30.Bf6 Rg7 31.Be7 Ke7 32.e5 Kd8 33.Qf8 Kc7 34.d6 Kb7 35.Bf3 Nc6 36.Bc6 dc6 37.bc6 Kc6 38.Qc8 Rc7 39.Qc7) 30...Bg5 31.Bg6 (31.f4 Bh4 32.Rg8 Kg8 33.Qg4 Kf8 34.Qh4 Qe4 35.Kh2 Qf5+–) 31...Rh8 32.Kg2 Qg7 (32...Rh4+–) 33.Kf1 Qh6 (33...Bh4 34.Qf4 Ke7 35.Qc7+–) 34.Ke2 (34.Bf6 Qh3 35.Qh3 Rh3 36.Rg5 Rh6+–) 34...Qh4 (34...Rg8 35.Bf6 Qg6 36.Bg7 Kg7 37.Rg5 Qg5 38.Qg5 Kf7 39.Qf4 Kg7+–) 35.Qf3 (better is 35.Rg4!? Qh3 36.Rg5 Qf5 37.Rf5 Rg8 38.Rf6 Ke7+–) 35...Rg8?? (35...Ke7+–) 36.Rg4 Qh6 37.Bf6 Rg6 (37...Qg6 38.Rg5 Qf7+–) 38.Bg5 Rf6 (38...Kg7 39.Bh6 Kh7 40.Qf7 Kh8 41.Rg6 Nc6 42.Rg8) 39.Bh6 Kf7 (39...Ke7 40.Rg7 Kd8 41.Qf6 Kc7 42.Bf4 Kb7 43.Qf8 Na6 44.Rd7 Nc7 45.Rc7) 40.Rg7 Kf8 (40...Ke8 41.Qf6 Nc6 42.Rg8) 41.Qf6 Ke8 42.Rg8 1–0. nordlicht (2150) – harzer, gameknot.com, 2006.

5.a4 d5 6.d4 e4 7.Ba3=.

5.d4 cb5 6.de5 Ba6? 7.Bd3 (7.Qh5 g6 8.Qf3 d5 9.ed6 Nd7+–) 7...Nc6 (7...Qe7 8.Qh5 Qf7 9.Qf3+–) 8.Qh5 g6? (better is 8...Ke7+/–) 9.Bg6!+– Ke7 (9...hg6 10.Qg6) 10.Be4 (10.Qh4 Ke6 11.Qg4 Ke7 12.Bh7 Ne5 13.Be5 Rh7 14.Qg8 Rg7 15.Bf6 Kf6+–) 10...Bg7 11.Nf3 (better is 11.Nc3 fe5 12.Ba3 b4 13.Nd5 Kf8 14.Bb4 Nb4 15.Qf5 Nf6 16.Nb4+–) 11...h6? (11...Qe8 12.Qg4 Qf7+–) 12.Nc3 Kf8 13.0-0-0 Qe8 14.Qe8 Re8 15.Rd7 Nge7 16.ef6 Bf6 17.Bc6 Nc6 (17...b4 18.Re7! Re7 19.Nd5 Bb2 20.Kb2+–) 18.Rd6 Bc3 19.Bc3 Rg8 20.Rc6 Rc8 21.Rc8 (21.Bb4 Kg7 22.Rd6 Rc4 23.Rd7 Kf6+–) 21...Bc8 22.Nh4 Bb7 (22...Rg4 23.g3+–) 23.f3 a5 (23...Kf7 24.Nf5 Ke6 25.Nd4 Kd5 26.Rg1+–) 24.Bd4 Bd5 25.Bb6 a4 26.a3 Kf7 27.Kb2 Rb8 28.Bc5 Rc8 29.Bb4 Rc4 (29...Be6 30.e4+–) 30.g3 (30.Nf5!? Kf6 31.e4 Be6+–) 30...h5 31.Rd1 Be6 32.Rd4 1–0. Hingst,Thomas (2095) – Anagnostou,Paul (1920), remoteschach.de, 2009.

5.d4 cb5 6.de5 Bb7 A) 7.Bb5? Bg2 8.Bd3 Qe7–+ (8...Bh1?! 9.Qh5 g6 10.Bg6 hg6 11.Qh8–+); B) 7.Nf3 a6 8.Nbd2 Nc6 9.a4 ba4 10.Ra4 fe5 11.Ne5; C) 7.Nc3 Nc6 8.Nb5 fe5 9.Nf3 Bb4 10.c3 Be7 11.Nd6; D) 7.Bd3 Bb4 8.Kf1+= (8.c3 Bc5 9.Qh5 Kf8 10.Nf3 Nc6 11.Nbd2) 8...Nc6 9.Qh5 Kf8 10.Nf3 Ne5 11.Ne5.

5.d4 cb5 6.de5 Nc6 7.Bb5 (7.Nd2 fe5 8.Bb5 Qc7 9.Ngf3 Nf6 10.0-0 d6 11.e4) 7...fe5 8.Nd2 Nf6 9.Ngf3 Qc7 10.0-0 d6 11.e4.

5.d4 cb5 6.Nf3 a6 7.Ne5 Ne7 8.Qh5 g6 9.Qf3 Nec6 10.Nd3 Na5 11.Nc3.

5.d4 ed4 A) 6.Bd3 Nh6 7.ed4 (7.Bd4 d5 8.Nf3 a6 9.a4 Bb4 10.c3 Be7 11.bc6) 7...cb5 8.Ne2 Be7 9.Nbc3 0-0 10.0-0 a6 11.Be4; B) 6.Bd4 B1) 6...Nh6 7.Nf3 (7.Nd2 Nf5 8.Bc3 d5 9.e4 Nd6 10.Qh5 g6 11.Qf3; 7.Bd3 d5 8.Nd2 Nf5 9.Ne2 Bb4 10.Bc3 a5 11.e4) 7...d5 8.c4 Nf5 9.cd5 Nd4 10.Qd4 Qd5 11.Qd5; B2) 6...Bb7 7.Ne2 (7.Nf3 a6 8.a4 Nh6 9.Bd3 ab5 10.ab5 Ra1 11.Ba1; 7.Nh3 cb5 8.Bb5 a6 9.Bc4 Qc7 10.Bg8 Rg8 11.Nf4) 7...cb5 8.Nf4 Nc6 9.Bb5 Bd6 10.Bb2 Bf4 11.ef4; B3) 6...a6 7.bc6 (7.Bd3 Nh6 8.Nh3 ab5 9.0-0 Na6 10.Nc3 Nb4 11.Qh5; 7.a4 Ne7 8.Nd2 Nf5 9.Ngf3 d5 10.Bd3 Bb4 11.c3; 7.Nh3 Nh6 8.Nf4 ab5 9.Nd2 Be7 10.Qh5 Nf7 11.Bd3) 7...Nc6 8.Nf3 Nh6 9.Nc3 d5 10.Qd2 Kf7 11.Be2.

5.Nf3 cb5?? 6.Bb5 (6.Ne5 Ke7 7.Qf3 d5+-) 6...Ba6? (6...Bb7 7.0-0+=) 7.Be2?? (better 7.Ne5 Bb5 8.Qh5 g6 9.Ng6 hg6 10.Qg6 Ke7 11.Ba3 d6 12.Qe4 Kd7 13.Qa8+-) 7...d5= 8.0-0 Bc5 (8...Nh6!?=) 9.d4+- ed4 10.Nd4 Bd4 11.Bd4 Ne7 12.Ba6 Na6 13.c4 (13.Qh5!? Kf8 14.Nc3+-) 13...0-0+= 14.Nd2 Nc7 15.Qb3 (15.c5 bc5 16.Bc5 Ne6 17.Be7 Qe7+=) 15...Rb8 (15...Rc8 16.Rfc1=) 16.cd5 Ned5 (16...Qd5 17.e4 Qf7 18.Rfd1+=) 17.e4 White gets the initiative. . 17...Kh8? (better 17...Ne6 18.Bb6 Qb6 19.ed5 Qd8+=) 18.ed5+- Nd5 19.Nf3 Nf4 (19...Rb7 20.Rfe1+-) 20.Rfe1 (20.Be3 Qc7+-) 20...Qd5 (20...Qd7 21.h3+-) 21.Rad1 (21.Be3!? Nh3 22.Kh1 Qh5+-) 21...Qb3 22.ab3 Rbd8 23.Be3 (23.Re7 a5+-) 23...Ne6 (23...Nd5 24.Nd4 Ne3 25.Re3+-) 24.h3 (24.Ra1 Ra8+-) 24...Nc7 (24...Rd1 25.Rd1 Rd8 26.Rd8 Nd8 27.Nd4+-) 25.Nd4 Nd5 (25...Rc8+-) 26.Ne6 Rfe8 (26...Kg8 27.Rd4 Rd7+-) 27.Nd8 Rd8 28.Bb6! Nb6 Exploits the pin (28...ab6 29.Rd5) 29.Rd5 (29.Rd8) 29...Nd5-+ 30.Rd1 Kg8 (30...f5 31.g4-+) 31.g3 (31.Ra1 Rd7-+) 31...Kf8 32.b4 (32.Ra1 Rd7-+) 32...Ke8 (32...Ke7 33.Re1 Kd6 34.Re4-+) 33.Ra1 (33.Rd4 Ke7 34.Kg2 Kd6-+) 33...Nb4 (better 33...Rd7!? 34.Ra4-+) 34.Ra7 Rd7 35.Ra8 Rd8 (better 35...Ke7-+) 36.Rd8?? (36.Rd8 Kd8 37.Kg2-+; 36.Ra7 Rd1 37.Kg2-+). BeepBeepImAJeep (2700) - mate_amargo, lichess.org, 2015.

5.Nf3 Ne7 6.Be2 e4 7.Nd4 c5 8.Nb3 Ng6 9.0-0 a6 10.a4 d5 11.d3 ed3 12.cd3 Ne5 13.N1d2 ab5 14.ab5 Ra1 15.Qa1 Qc7 16.f4 Ng4 17.Bg4 Bg4 18.h3? Bf5 19.Nc1 c4 20.dc4 dc4 21.Bf6 gf6? 22.Qf6+– Bg7 23.Qf5 Nd7 24.Qd5 Nf6 25.Qc4 Kd7 26.Qc7 Kc7 27.Ne2 Re8 28.Rc1 Kb7 29.Nf1 Nd5 30.Rd1 Nc7 31.Rd7 Re3 32.Rg7 Re2 33.Rh7 Rb2 34.Rd7 Rb5 35.Rd4 Ne6 36.Re4 Nd8 37.Nd2 Nc6 38.Nc4 Rb1 39.Kf2 Rc1 40.g4 Rc2 41.Kg3 b5 42.Na3 Rc3= 43.Kh4 Ra3 44.f5 b4 45.Rb4?? Nb4–+ 46.f6 Ra8 47.g5 Nd5 48.Kh5 Nf4 49.Kg4 Ng6 50.Kf5 Nf8 51.h4 Ra5 52.Kg4 Kc6 53.h5 Kd6 54.h6 Ke6 55.Kh5 Kf7 0–1. valpa – JerryReneau, playchess.de, 2003.

5.d4 a6+=.

5.d4 Bb7 6.d5 f5 7.Nf3 Nf6 8.c4 Nbd7 9.Qc2 g6 10.Nc3 Bh6 11.Be2 0-0 12.0-0 Nc5 13.Nd2 (13.Na4 Nce4 14.Nc3 Nf2 15.Rf2 Be3) 13...a6 14.a4 (14…Qd7 15.ba6 Ra6 16.Nb3 Nb3 17.Qb3=). Plock,Joerg – Marshall, corr SOK–98–E003A, 1998.

5.Qh5 g6= 6.Qf3 d5 7.c4 d4?? (better is 7...c6+=) 8.Qa8+– de3 (8...Bf5 9.ed4 ed4 10.Ne2+–) 9.Qb8 ef2 10.Kf2 Bc5 (10...a5 11.Nf3+–) 11.Ke1 h5 (11...a6 12.ba6 Ba6 13.Qd8 Kd8 14.Nf3+–) 12.Nc3 (better is 12.Qa7 Nh6 13.Nc3+–) 12...Be3 (12...a5+–) 13.de3 Ne7 14.Rd1 Qd1 15.Kd1 Kd8 16.Nf3 h4 17.Ba3 g5 18.Be7 Kd7 19.Bf6 Rh6 20.Nd5 e4 (20...Rh7 21.Qc7 Ke6 22.Ng5 Kf5 23.Qh7 Kg4 24.Be2) 21.Qc7 Ke8 22.Qe7 1–0. pcmvr (2865) – zeca, net–chess.com, 2008.

5.c4 c5 6.d3?? (better is 6.Qh5 g6 7.Qf3+–) 6...d5= 7.cd5 (7.d4 ed4 8.ed4 cd4 9.Bd4 Be6=) 7...Nd5+= 8.Be2 Bb7 (8...a6 9.Bh5 g6 10.Bf3+=) 9.Nf3= Nc7 (9...Qd7 10.Qb3=) 10.Nc3 Nd7 11.a4 a5 (11...a6 12.0-0=) 12.0-0+= Qe7 13.Nd2 0-0-0 14.Nc4 g6 15.Bf3 Bg7? (better is 15...Qe6+/–) 16.Bb7+– Kb7 17.Qf3 Ka7 (17...Kb8 18.Qc6 Rhe8 19.Nb6+–) 18.Qc6 Rc8 (18...Na8 19.Nd5 Qf7+–) 19.Nd6 Rb8 20.Qc7 Ka8 21.Nd5 Qe6 (21...Qd8 22.Qc6 Ka7+–) 22.Qc6 (22.Qc6 Ka7 23.Nc8 Rhc8 24.Qe6+–) 1–0. Bares Moreno,Pau (1850) – Torrijos Alhambra,Julian (1625), 1st Irt Burjassot, 2013.

5.Bc4?? Ng6 (5...d5 6.Bb3=) 6.Ne2 d5 7.Bb3 Be7 (7...a6 8.Nbc3 ab5 9.Bd5=) 8.c4 (8.d4!? e4 9.Nec3+=) 8...dc4= 9.Bc4 Nd7 (9...a6!?=) 10.Bd5+= Rb8 11.Qb3 (11.d4 a6+=) 11...Rf8 (11...Nc5!? 12.Qc4 a6=) 12.Ng3 Nc5 13.Qc4 Bb7 14.Bb7 Nb7 15.Nf5 The mate threat is Nxg7 15...Rf7 16.Nc3 Nd6 17.Nd6 Qd6 18.Ne4 Qd7 19.Bc3 (19.d4!?+=) 19...Rc8= 20.0-0 (20.Rc1 f5 21.Ng3 c6=) 20...c6=+ 21.a4 cb5 (21...Qd5 22.Qd5 cd5 23.Ng3=+) 22.Qb5= Qb5 23.ab5 Rc7 (23...f5 24.Ng3 Bf8 25.Rfc1=) 24.Rfc1 (better 24.g4=) 24...Kf8?? (24...f5 25.Ng3=) 25.Bb2 (better 25.Be5!? Rc1 26.Rc1 Ne5 27.Rc8 Bd8 28.Rd8 Ke7 29.Rd4+-) 25...Bd8 (25...Bb4 26.d4+=) 26.Nd6 (26.Ba3 Kg8+=) 26...Rfd7= 27.Ba3 Kg8 28.Kf1 (28.d4 Be7 29.Rc7 Rc7 30.de5 fe5=) 28...Rc1= 29.Rc1 Be7 30.Rc8 Nf8 31.Nc4 (31.Rc6 Ne6 32.Ne4 Kf7 33.Nd6 Kg6=) 31...Ba3=+ 32.Na3 Rd2 33.Nc4 Rc2 (33...Rd5!? 34.Na3 Kf7-/+) 34.Nd6 (34.Nb6!? Rd2 35.Ke1+-) 34...Rc8 35.Nc8 Nd7 36.Na7 Nc5 37.Nc8 Nd7 38.Ke2 (38.f4 Kf7=) 38...Kf7 39.Kd3 Ke6 40.Kc4 (40.Kc4 f5 41.h4=) 1-0. aravind555 (1690) – kamelwrd, lichess.org, 2020.

5.a4 a5 6.Bc4+= g6 (6...Bb7 7.Nc3+=) 7.Nf3 Bb4 8.0-0 Bb7 9.d4 Be4 (9...d5 10.Bd5 Bd5 11.ed5+–) 10.de5 fe5?? (better is 10...d5 11.ed6! Qd6+–) 11.Be5 (11.Bd5 Nf6 12.Be4 c6 13.bc6 dc6 14.Qd8 Kd8 15.Ne5 Ne4 16.Nf7 Ke7 17.Nh8 Nd7+–) 11...Nf6 (11...d5 12.Qe2 Bf3 13.Qf3 (13.gf3?! Kf8+–) 13...dc4 14.Bh8+–) 12.Nc3 (better is 12.Qe2!? Kf8 13.Bf6 Qf6 14.Qe4 c6 15.bc6 Nc6+–) 12...Bc3 13.Bc3 Rf8 (13...d5 14.Re1 0-0 15.Bf6 Rf6 16.Re4+–) 14.Re1 d5 (14...c6 15.Bf6 Qf6 16.Re4 Kd8 17.Rb1+–) 15.Bf6 Qf6 (15...Rf6 16.Bd5 Kf8 17.Be4 Rd6+–) 16.Qd5 Qe7 17.Re4 Nc6 (17...Qe4 18.Qe4 Kd8 19.Rd1 Nd7 20.Be6 Ra7 21.Rd7 Kc8 22.Rf7 Kd8 23.Qd5 Ke8 24.Qd7) 18.Rd1 Qe4 (18...Nd4 19.Rdd4 Qe4 20.Re4) 19.Qd7 1–0. pcmvr (2830) – sbderkach (1915), net–chess.com, 2014.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bb7 8.Nc3 Bc5 9.Bc4 Ne7 10.Qg4 Ng6 11.Nf3 c6 12.0-0 cb5 13.Nb5 d6 (13...Qc8!?+/-) 14.d4+- Bd4? (better 14...ed4 15.Nfd4 Qd7+-) 15.Qe6 Qe7 16.Nd6 (16.Nd6 Kf8 17.Nb7 (worse 17.Bd4 Qe6 18.Be6 Ba6+-) 17...Qe6 18.Be6 Ba1 19.Ra1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Bb7!? 6.Nc3 Bb4=.

5.Nc3 A) 5...Bb7 6.a4 (6.Nf3 Bb4 7.Nd5 Bd5 8.ed5 Ne7 9.ba6=; 6.Bc4 ab5 7.Bb5 c6 8.Bd3 Na6 9.Nf3=; 6.Rb1 Ne7 7.Qh5 g6 8.Qh4 Nc8 9.Nf3=; 6.Nh3 Bc5 7.Qg4 g6 8.f4 Bd4 9.Nf2=) 6...Bb4 7.Qg4 Qe7 8.Bc4 Bc3 9.Bc3+=; B) 5...Bc5 6.a4 (6.Nf3 Ne7 7.d4 ed4 8.Nd4 ab5 9.Bb5=; 6.Qg4 g6 7.Qg3 ab5 8.Nb5 Nc6 9.c3=; 6.Bc4 ab5 7.Bg8 Rg8 8.Qh5 Kf8 9.Qh7=; 6.Rb1 ab5 7.Bb5 c6 8.Bc4 b5 9.Bb3=) 6...Nh6 7.Nf3 Bb7 8.Bc4 Nf7 9.0-0=; C) 5...c6 6.bc6 (6.ba6 b5 7.d4 ed4 8.Qd4 Na6 9.e5=; 6.a4 d5 7.ed5 cd5 8.Qh5 g6 9.Qf3=) 6...dc6 7.Bc4 Nh6 8.Rb1 b5 9.Bb3=; D) 5...Ne7 6.Qh5 (6.Nf3 ab5 7.Bb5 c6 8.Be2 d5 9.d4=; 6.ba6 Na6 7.Qh5 g6 8.Qf3 Bg7 9.Bc4=) 6...g6 7.Qf3 Bg7 8.a4 Bb7 9.Bc4=; E) 5...ab5 6.Bb5 c6 7.Bc4 b5 8.Bg8 Rg8 9.Qh5=.

5.d4 A) 5...Bb7 6.de5 (6.d5 ab5 7.Bb5 c6 8.Bc4 Qc7 9.Nf3=) 6...ab5 7.Nc3 Qe7 8.Nb5 Qb4 9.Bc3=; B) 5...ed4 6.Bd4 (6.Qh5 g6 7.Qd5 c6 8.bc6 Nc6 9.Bc4+=; 6.Qd4 Bb7 7.Nc3 ab5 8.Bb5 Bc5 9.Qd3=) 6...ab5 7.Bb5 Bb7 8.Nd2 Nc6 9.Ngf3=; C) 5...Qe7 6.c4 (6.Ba3 Qf7 7.de5 Ba3 8.Na3 Qe7 9.Nc4+=; 6.a4 Bb7 7.Ba3 Qf7 8.de5 ab5 9.ab5=; 6.Bd3 ed4 7.Qh5 g6 8.Qd5 Ra7 9.Qd4=; 6.de5 Qb4 7.Bc3 Qe4 8.Qe2 Bb7 9.a4=) 6...ab5 7.cb5 Bb7 8.de5 Be4 9.Nd2=.

5.Be5 ab5 6.Bd3 (6.Bg3 c6 7.Nf3 Qe7 8.Qe2 Na6 9.Nc3+=; 6.Nc3 c6 7.Bd4 b4 8.Nb1 Qe7 9.Bd3=; 6.Bb2 Qe7 7.Qh5 g6 8.Qh4 b4 9.Ne2=; 6.Bf4 c6 7.Nf3 Ne7 8.d4 d5 9.Bd3=) 6...c6 7.Bd4 d6 8.Ne2 Be6 9.a3+=.

5.Be5 Bb7 6.Bg3 (6.Bf4 ab5 7.Nc3 c6 8.Qh5 g6 9.Qf3=) 6...ab5 7.Qh5 g6 8.Qb5 Na6 9.Qc4+=.

5.Be5 d5 6.Bb2 (6.Bf4 de4 7.Bc4 f5 8.Nc3 Nf6 9.Nge2=; 6.Bg3 de4 7.ba6 f5 8.Bb5 Bd7 9.Qe2=) 6...de4 7.Qh5 g6 8.Qe2 Qe7 9.Nc3+=.

5.Be5 fe5? 6.Qh5 g6 7.Qe5 Qe7 8.Qh8 Qe4 9.Kd1+–.

5.Nf3 Bb7 (5...ab5 6.Bb5 c6 7.Bc4 Ne7 8.0-0 d5 9.ed5=; 5...Ne7; 5...Bc5; 5...Nh6) 6.Nc3 Bb4 7.ba6 Na6 8.Nd5 Ne7 9.Nb4=.

5.Nc3 a6 6.ba6 (6.a4 Bb4 7.Qg4 Qe7 8.Bc4 Bc3 9.Bc3=; 6.Rb1 Bc5 7.Qg4 Qe7 8.Bc4 ab5 9.Nb5=; 6.Nh3 Bc5 7.Qg4 g6 8.f4 Bd4 9.Nf2=; 6.Nf3 Bb4 7.Nd5 Bd5 8.ed5 ab5 9.Bb5=) 6...Na6 7.Bc4 Bc5 8.Nf3 Ne7 9.0-0=.

5.Nc3 Bb4 6.Nd5 (6.Qg4 Qe7 7.Bc4 Bc3 8.Bc3 a6 9.ba6=; 6.Qh5 g6 7.Qh4 a6 8.Nf3 Qe7 9.Bc4=; 6.Nge2 a6 7.a3 Bc5 8.d4 Bd6 9.ba6=) 6...Bd5 7.ed5 a6 8.Qh5 g6 9.Qh4+=.

5.Nc3 c6 6.a4 c5 (6...a6 7.Bc4+=) 7.Bc4+- Ne7 (7...a6 8.Bg8 Rg8 9.Qh5 g6 10.Qh7+-) 8.Qh5 (8.Nh3 a6+-) 8...g6+= 9.Qf3 (9.Qh4 Bg7+=) 9...f5 (9...Bg7 10.Nge2+=) 10.Nh3 (better 10.Nd5 Bd5 11.Bd5 Nd5 12.ef5+- (12.ed5?! d6=)) 10...a6? (better 10...Bh6+=) 11.Ng5+- f4?? (better 11...d5 12.ba6 dc4 13.ab7 Ra5+-) 12.Bf7 1-0. DEFFM – GuestXTHX, freechess.org, 2020.

5.Nc3 Ne7 6.Nf3 (6.Qh5 g6 7.Qh4 Bg7 8.Bc4 d5 9.ed5=; 6.Bc4 a6 7.a4 Nc8 8.Qh5 g6 9.Qf3=; 6.a3 a6 7.Qh5 g6 8.Qh4 Bg7 9.Nf3=; 6.Nh3 a6 7.f4 ab5 8.Bb5 Nec6 9.0-0=) 6...d5 7.ed5 Nd5 8.Bc4 Nc3 9.Bc3+=.

5.Nc3 Nh6 6.Nf3 (6.Bc4 a6 7.a4 Nf7 8.Qh5 g6 9.Qf3=; 6.Qh5 g6 7.Qh4 a6 8.Nf3 Nf7 9.Bc4=; 6.a4 Nf7 7.Nf3 Bc5 8.Bd3 a6 9.0-0=) 6...Nf7 7.d4 ed4 8.Nd4 a6 9.Nf5=.

5.d3 c6 6.a4 Bb4 7.Bc3 Bc3 8.Nc3 cb5 9.ab5 Ne7 10.Nf3 Ng6 (10...d5 11.ed5 Nd5 12.Nd5 Qd5 13.d4=) 11.Be2 (11.d4 Qc7 12.Qd2 d6+=) 11...Qc7= 12.Qd2 d6 (12...Nf4 13.g3 Ne2 14.Ne2+=) 13.0-0 h5 (13...0-0!?=) 14.Ra3+/– h4 15.Rfa1 a6 16.Qe3 (16.ba6!? Ra6 17.Ra6 Ba6 18.Nd5+–) 16...Nf4 Black prepares the advance h3 17.d4 Rh6 (17...h3 18.ba6 Ne2 19.Qe2 (worse is 19.Ne2 Ra6 20.g3 Ra3 21.Ra3 Qc2=) 19...Ra6 20.Ra6 Na6 21.Qb5 Ke7 22.Ra6 Qc3 23.Ra7+=) 18.d5 (18.ba6 Ne2 19.Qe2 Ra6 20.Ra6 Ba6 21.Ra6 Na6+–) 18...h3 19.g3 Rg6 (19...Ne2 20.Qe2 a5 21.Na4+/–) 20.Nh4 Rg5 21.Bd1 g6 (21...Bc8 22.Kh1 Ng2 23.Ng2 hg2 24.Kg2+–) 22.Na4 (22.ba6!? Na6 (22...Ba6?? 23.Nb5 Qd8 24.Nf3+–) 23.Nb5 Qd8+–) 22...ab5 23.Qb6 Qc4?? (better is 23...Kd8 24.Nf3 Rh5 25.Qb5 Ng2+–) 24.f3 (24.Qb7 Qe4 25.Bf3 Qb4+–) 24...Ne2?? (24...Ra4 25.Qb7 Ra3 26.Qb8 Kf7–+) 25.Be2+– Qe2 26.Qf2 (better is 26.Qb7 ba4 27.Qa8+–) 26...Qc4?? (better is 26...Qf2 27.Kf2 ba4 (27...Ra4?! 28.Ra4 ba4 29.Rb1+=) 28.Ra4 Na6–+) 27.Nb2+/– Qb4?? (better is 27...Ra3 28.Ra3 Qc7+/–) 28.c3 (better is 28.Ra8 Ba8 29.Ra8+–) 28...Ra3–+ 29.Ra3 Qc5 (better is 29...Qa3 30.Nd1 Qc1–+) 30.Qc5+– dc5 31.g4?? (better is 31.Ra7!? Bd5 32.ed5 Nd7+–) 31...b4? (better is 31...Na6+=) 32.cb4+– cb4 33.Ra7 Bc8 (33...Bc6+–) 34.Ra8 Bg4 35.Rb8 (35.fg4?! Rg4 36.Kf1 Rh4 37.Rb8 Kd7 38.Rb4 Rf4 39.Ke2 Rg4+–) 35...Ke7 36.Kf2 (36.fg4?! Rg4 37.Kf2 Rh4+–) 36...f5 (36...Bd7 37.Nc4+–) 37.Rb6 (worse is 37.fg4 Rg4 38.Rb7 Kd8+–) 37...fe4 (37...Bh5 38.d6 Ke8 39.ef5 gf5 40.Nd3+–) 38.Rg6 (38.fg4 Rg4 39.Ng6 Kd8+–) 38...e3 (38...Rg6 39.Ng6 Kf6 40.fg4+–) 39.Ke3 Rg6 40.Ng6 (40.fg4?! Rg4 41.Nf5 Kd8+=) 40...Kf6 41.fg4 Kg6 (41...e4 42.Nf4 b3 43.d6 Kf7 44.g5 Kf8 45.g6 Ke8 46.g7 Kd7 47.g8Q Kc6 48.Qd5 Kb6 49.d7 Ka6 50.d8Q Ka7 51.Q5a8) 42.Ke4 (42.d6 Kf7 43.g5 Ke6+–) 42...Kg5 43.d6 Kg4 44.d7 Kg5 45.d8Q Kg4 1–0. nordlicht – harzer, gameknot.com, 2001.

5.d3 c6 6.a4 cb5 7.ab5 a6 8.c4 ab5 9.Ra8 Ba8 10.cb5 Ne7 11.Nf3 g6 12.Be2 Bg7 13.0-0 0-0? 14.Nbd2?? d6 15.d4 Nd7 16.d5 f5 17.ef5 Nf5 18.h4 Bd5–/+ 19.Ng5 Nh4 20.Ngf3 Bf3 21.Bf3 Nf3 22.Nf3 Nf6 23.Qb3 Kh8 24.Rc1 Ne4 25.Qd5 Ng5?? 26.Ng5= Qg5 27.Rc6 Qf5 28.f3 Qb1 29.Bc1 Qb4 30.Bd2 Qd4 31.Qd4= ed4 32.Rd6 Be5 33.Rb6 Rc8 34.Rc6 Rc6 35.bc6 Kg7 36.Kf2 Kf7 37.f4 Bc7 38.Kf3 Ke6 39.Ke4 Kd6 40.Kd4 Kc6 41.Ke4 Kd6 42.g4 Ke6 43.f5 gf5 44.gf5 Kf6 45.Bc3 Kf7 46.Kd5 h5 47.Kc6 Bf4 48.Kd5 h4 49.Be1?? Bg3 50.Ke4 Be1 51.Kf3 Kf6 52.Kg2= Kf5 53.Kh1 Kg4 54.Kg2 h3 55.Kh1 Kg3 56.Kg1 Bf2 57.Kh1 Be1 58.Kg1 Kf3 59.Kh1 Bg3 60.Kg1 Ke2 61.Kh1 Bh4 62.Kh2 Bf6 63.Kh3 ½–½. iczker – blaugrana18, internet, 2011.

5.d3 Ne7 6.c4 d6 7.Nc3 Ng6 8.h3 Nd7 9.a4 Be7 10.Be2 0-0 11.Bg4 Nc5 12.Nd5 Bd5 13.ed5 Nf4 14.Bf3?? Nfd3–+ 15.Kf1 Nb2 16.Qc2 Nbd3 17.g3 e4 18.Be4 Ne4 19.Qd3 Nc5 20.Qf5 Qd7 21.Qf4?! Rae8 22.Ne2 Bd8 23.Nd4 Qe7 24.Kg2 Qe4 25.Qe4 Re4 26.Nc6 Rc4 27.a5 ba5 28.Ra5 Ra4 29.Ra4 Na4 30.Na7 Nb6 31.Re1 Kf7 32.Nc6 Nd5 33.Nd4 Re8 34.Re8 Ke8 35.Nf5 g6 36.Ne3 Ne3 37.fe3 Ke7 38.Kf3 Ke6 39.Ke4 f5 40.Kd4 Bf6 41.Kc4 Ke5 42.h4 Ke4 43.h5 Ke3 44.Kd5 gh5 45.Kc6 Be5 (45...Be5 46.b6 cb6 47.Kb6 h4 48.gh4 f4–+) 0–1. iczker – plus1963, internet, 2011.

5.Bd3 d5 (5...a6 6.Qh5 (6.Nc3= ab5 7.Bb5 c6 8.Bd3 Nh6 9.Nf3=; 6.a4 Bc5 7.Nc3 Ne7 8.Qh5 g6 9.Qh4=; 6.Qg4 Nh6 7.Qh5 Nf7 8.Nc3 Bc5 9.Nf3=) 6...g6 7.Qe2 Bc5 8.Nf3 Ne7 9.0-0=; 5...Nh6 6.Qe2 (6.Nf3 a6 7.Nc3 ab5 8.Bb5 Bb4 9.Qe2=; 6.Nc3 a6 7.Nf3 ab5 8.Bb5 Bb4 9.Qe2=; 6.Ne2 Bc5 7.0-0 a6 8.a4 Nf7 9.Nbc3=; 6.Qh5 Nf7 7.Nf3 a6 8.Nc3 ab5 9.Bb5=) 6...a6 7.Nf3 Nf7 8.a4 Bc5 9.0-0=; 5...Bc5 6.Nc3 (6.Qg4 Qe7 7.Nc3 Nh6 8.Qh4 a6 9.Nf3=; 6.Nf3 a6 7.Nc3 Ne7 8.a4 d5 9.0-0=; 6.Nh3 a6 7.Nc3 ab5 8.Bb5 Nc6 9.Na4=; 6.Qh5 g6 7.Qe2 a6 8.Nf3 Ne7 9.0-0=) 6...a6 7.Nf3 Ne7 8.a4 d5 9.0-0=; 5...Bb4 6.Nc3 (6.a3 Bc5 7.Qg4 Qe7 8.Nc3 Nh6 9.Qg3=; 6.Bc4 a6 7.Qh5 g6 8.Qf3 Qe7 9.ba6=; 6.Qg4 Qe7 7.Nc3 Bc3 8.Bc3 Nh6 9.Qe2=; 6.Bc3) 6...a6 7.Qg4 Bc3 8.Qg7 Bb2 9.Rb1=; 5...c6 6.a4 (6.Qh5 g6 7.Qe2 a6 8.bc6 Nc6 9.Nc3=; 6.Nc3 a6 7.bc6 Nc6 8.Bc4 Nge7 9.Qh5=; 6.bc6; 6.Qg4) 6...a6 7.Nc3 ab5 8.ab5 Ra1 9.Ba1+=) 6.Qe2 (6.ed5 Qd5 7.Nf3 a6 8.0-0 ab5 9.Nc3=; 6.Qh5 g6 7.Qe2 Ne7 8.f4 Nd7 9.Nh3+=) 6...Nd7 (6...a6 7.f4 ef4 8.ed5 Ne7 9.Nc3+=) 7.Nf3 (7.ed5 Bd5 8.f4 Qe7= 9.Ba3+=) 7...Nc5= 8.0-0 (better is 8.ed5 Nd3 9.cd3+=) 8...de4–/+ 9.Be4? (better is 9.Ne5!? ed3 10.Qh5 g6 11.Ng6 hg6 12.Qh8–/+) 9...Be4 10.d4 ed4 11.Bd4 Qe7 12.Nc3 (12.Bc5 bc5 13.Nbd2–+) 12...0-0-0?? (better is 12...Bb7 13.Qc4 Qf7 14.Rfe1 Be7–+) 13.Bc5+= bc5 (better is 13...Bf3!? 14.Be7 Be2 15.Bf8 Bf1 16.Bg7 Bb5 17.Nb5 a6=) 14.Qe4+/– Qe4 15.Ne4 Nh6 16.c4 (16.Rad1 Be7+/–) 16...Nf5 17.Rfd1 Nd4 18.Nfd2 f5 19.Ng5 Rd7 20.Ndf3 Bd6 21.Nd4 cd4 22.Ne6 (22.Rd3 Re8=) 22...Bb4 23.Rd4? (better is 23.Nf4=) 23...Rd4–+ 24.Nd4 Bc5?? (24...Bc3 25.Rd1 Rd8 26.Kf1–+) 25.Rd1?? (25.Nf5 Rd8 26.Ne3+– (26.Ng7?! Bd4 27.Ne6 Ba1 28.Nd8 Kd8=)) 25...Rd8–+ 26.Kf1 Rd4 27.Rd4 Bd4 28.Ke2 Kd7 29.f3 Kd6 30.Kd3 Kc5 31.h3 Bf2 32.Ke2 Bg3 33.Kd3 Be5 34.g4 g6 35.gf5 gf5 36.h4 h5 37.a3 Bb2 (37...Bg3 38.a4–+) 38.Kc2 (38.a4 Kb4–+) 38...Ba3 39.Kb3 Bb2! 40.Kb2 Kc4 41.Kc2 Kb5 42.Kb3 a5 43.Kc3 a4 44.Kb2 Kb4 45.f4 a3 46.Ka2 c5 47.Kb1 Kb3 48.Ka1 c4 49.Kb1 c3 50.Ka1 Kc2 (50...Kc4 51.Kb1 Kb4 52.Kc1 a2 53.Kd1 a1Q 54.Ke2 c2 55.Kf3 Qf1 56.Kg3 c1Q 57.Kh2 Qcf4) 51.Ka2 Kd1 0–1. Neumann,Frank – Krueger,Daniel, Germany, 2006.

5.Be5 Be4 6.Bb2 Bb7 7.Qh5 g6 8.Qe2 Qe7 9.Qe7 Be7 10.d3 Nh6 11.Nd2 d6 12.Ngf3 Nd7 13.Be2 a5 14.0-0 0-0-0 15.c4 Rhg8 16.d4 Rde8 17.Bd3 f5 18.Ne1 Bg5 19.Ndf3 Bf6 20.Bc1 Nf7 21.Rb1 h6 22.a4 Nf8 23.Ba3 Ne6=+ 24.Bb2 Be7 25.g3 Nfg5 26.Ng5 hg5 27.f3 f4 28.g4 Bf6= 29.Nc2 Rh8 30.d5 Bb2+= 31.Rb2 Nf8?? 32.Rf2 Kb8 33.Be4 Bc8 34.Nd4+= Bd7 35.Rbe2 ½–½. mic (2200) – ironhorse (2210), net–chess.com, 2009.

5.Qf3 A) 5...a6 6.a4 (6.Qh5 g6 7.Qh4 ab5 8.Bb5 Na6 9.a3=; 6.Nh3 d5 7.Bd3 ab5 8.Bb5 c6 9.Bd3+=; 6.d4 ed4 7.Bd4 ab5 8.Bb5 Nc6 9.Ne2=; 6.Nc3 ab5 7.Bb5 Nc6 8.Nge2 Nb4 9.Kd1=) 6...d5 7.Nc3 ab5 8.ab5 Ra1 9.Ba1=; B) 5...Bc5 6.Ne2 (6.Qg3 Qe7 7.Nc3 a6 8.Nf3 Nh6 9.Bc4=; 6.Nc3 a6 7.Qg3 Qe7 8.Nf3 Nh6 9.Bc4=; 6.Qg4 Qe7 7.Nf3 Nh6 8.Qh4 a6 9.Nc3=; 6.Ba3 Ba3 7.Na3 Ne7 8.Bc4 a6 9.Ne2=) 6...a6 7.d4 ed4 8.Nd4 Qe7 9.Nd2=.

5.Qg4 A) 5...a6 6.Nc3 (6.Nf3 Nh6 7.Qh5 Nf7 8.Nc3 Bc5 9.a4=; 6.Nh3 Nh6 7.Qh5 Nf7 8.Nc3 ab5 9.Bb5=; 6.Qh5 g6 7.Qh4 d5 8.Bd3 ab5 9.Bb5+=; 6.d4 ed4 7.Bd4 ab5 8.Bb5 Nc6 9.Ne2+=) 6...Nh6 7.Qh5 g6 8.Qf3 Bc5 9.Na4=; B) 5...Nh6 6.Qh5 (6.Qh4 a6 7.Nf3 d5 8.Nc3 d4 9.Nb1+=) 6...Nf7 7.Bc4 d5 8.Bd5 Bd5 9.ed5=.

5.Qh5 g6 6.Qh4 (6.Qg4 a6 7.Nf3 Bc5 8.Qh4 h5 9.Nc3=; 6.Qf3 a6 7.Nc3 Bc5 8.a3 Nh6 9.ba6=; 6.Qe2 a6 7.Nc3 ab5 8.Nb5 Nc6 9.Nf3=) 6...Be7 7.Nc3 a6 8.Nf3 ab5 9.Bb5=.

6.Bc4 a6 7.Bg8 Rg8 8.Qh5 Ke7 9.Qh7=.

6.Bc4 a6 7.Qh5 g6 8.Qh4=.

6.Bc4 Bb4 7.Qg4 Bc3?? (better 7...g6+=) 8.Qg7+- (8.dc3?! Qe7=; 8.Bc3?! Qe7+=) 8...Bb2 (8...Qe7 9.Qh8 Bb2+-) 9.Qf7 1-0. onur604 (2320) - Hardik_Thakkar4 (2395), Casual Rapid game, lichess.org, 2021.

6.Nge2 a6 7.d4 ed4 8.Nd4 Ne7 9.Qh5=.

6.Nf3 a6 7.d4 ed4 8.Nd4 Ne7 9.Qh5=.

6.Qg4 g6 7.Nf3 a6 8.Bc4 ab5 9.Bb5=.

5.Bc4 Bb7 6.Qh5 g6 7.Qf3+=.

5.Bc4 Ne7 6.Ne2 (6.Qh5 g6 7.Qf3 Bg7 8.Be5 Bb7+/–) 6...d6 7.0-0 a6 8.a4 g5 (8...d5!? 9.ed5 Nd5+=) 9.Ng3+/– Bh6?? (better is 9...Ng6+/–) 10.Qh5+– Kd7 11.Qh6 Ng8 (11...Qf8 12.Qh5+–) 12.Qg7 Ne7 13.Qf6 (13.Nh5 Kc7 14.Nf6 Qf8 15.Qf8 Rf8 16.Nh7 ab5 17.ab5 Ra1 18.Ba1 Rf4+–) 13...Re8 (13...Ng6 14.Qf7 Qe7 15.Qd5+–) 14.Qg5 Rg8 (14...Ng6 15.Qh5 Qf6 16.Qh7 Ne7 17.Nf5+–) 15.Bg8 ab5 (15...Qg8 16.Qg8 Ng8 17.f4 ef4 18.Rf4+–) 16.ab5 (better is 16.Bh7 ba4 17.Nc3 Nbc6+–) 16...Bb7 (16...Ra1 17.Ba1 Qg8 18.Qg8 Ng8 19.f4 ef4 20.Rf4+–) 17.c4 (17.Ra8 Ba8 18.Bh7 Bb7+–) 17...h6 (17...Ra1 18.Ba1 Qg8 19.Qg8 Ng8 20.f4+–) 18.Qg7 (better is 18.Qg4 Kc7 19.Ra8 Ba8+–) 18...Qg8 (18...Ra1 19.Be6! Ke6 20.Qh6 Kd7 21.Ba1+–) 19.Qg8 Ng8 20.Ra8 Ba8 21.d3 Nf6 22.h3 h5 23.f4 h4 (23...Ke6 24.Nc3 ef4 25.Nce2+–) 24.Nf5 (24.fe5 Ne8 25.Rf7 Ke6+–) 24...Nh5 (24...Ke6 25.fe5 de5 26.Nc3+–) 25.fe5 Ke6 26.ed6 Nd7 27.Nd2 Bb7 28.Nf3 Ne5 29.Ne5 Bc8 30.Nc6 Ng3 31.Ng3 hg3 32.Be5 Bd7 33.Rf6 1–0. Schaar,Joerg (1800) – April,Nora, remoteschach.de, 2006.

5.f4 d5 6.fe5 f5 7.ed5 Qh4 8.Ke2 Ne7+–.

5.f4 ef4?? 6.Qh5+– g6 (6...Ke7 7.Qd5 Nc6 8.bc6 dc6 9.Qc6+–) 7.Qd5 d6 (7...Nc6 8.Bc4 (worse is 8.bc6 dc6 9.Qc6 Bd7+–) 8...Qe7 9.bc6+–) 8.Bc4 Nh6 9.Qa8 Nd7 10.Nc3 f5 (10...Ne5 11.Bd5+–) 11.Nd5 Kf7 (11...Ne5 12.Ne2 Bg7 13.Nef4 0-0 14.Qa7 Rf7 15.Qb6 Qh4 16.g3 Nc4 17.gh4 Nb6 18.Bg7 Nd5 19.Bh6 Nf6+–) 12.Nf4 Ke8 13.Ne6 Qh4 14.Kf1 Qf4 1–0. Taulien,Hans_Juergen (2350) – Boese,Fee (1945), remoteschach.de, 2002.

5.Bc4 Ne7 6.Ne2 Bb7 7.Nbc3 Bb4 (7...a6!?=) 8.f4 Bc3 9.Nc3 d6? (better is 9...ef4!? 10.0-0 Ng6+=) 10.Qg4+– g6 11.Qe6 Threatening mate: Qf7 11...f5?? (better is 11...Rf8 12.Nd5 Nd7+–) 12.Qf7 Kd7 13.Bd5 (13.Be6) 13...Bd5 (13...Kc8 14.Be6 Nd7 15.fe5 de5 16.Ba3+/–) 14.Nd5+– (worse is 14.ed5 Qg8 15.Qf6 Ke8+=) 14...fe4?? (better is 14...Rf8 15.Qh7 c6 16.Ne7 Qe7 17.Qe7 Ke7 18.fe5 fe4+/–) 15.fe5 de5 16.Ne7 Qe7 17.Qd5 Qd6 (17...Kc8 18.Qa8 Qc5 19.Qe4 Qb5 20.0-0-0+– (20.Qe5 Re8 21.Qe8 Qe8 22.Kd1 Qe4+=)) 18.Qa8 Qb4 (18...Qc5 19.Qe4 Qb5 20.0-0-0+– (20.Qe5?! Re8 21.Qe8 Ke8=)) 19.Be5 Qb2 (19...Re8 20.Qd5 Kc8+–) 1–0. Taulien,Hans_Juergen (2350) – Voelkel,Patrick (2000), remoteschach.de, 2004.

5.Bc4 Ne7 6.Qh5 g6 7.Qf3 f5?? (better 7...Rf8+=) 8.ef5+- Nf5?? (8...d5 9.f6 Be6 10.fe7 Ke7+-) 9.Qa8 Qh4 10.d4 (better 10.Be2!? Qf2 11.Kd1 d5+-) 10...Qe4 (10...Bd4 11.g3 Bf2 12.Kf2 Qc4+-) 11.Qe4 (11.Qe4 d6 12.dc5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bc4 Ne7 6.Qh5 g6 7.Qh4 d5=.

5.Nf3 Bb7 6.d3 Ne7 7.Nc3 a6 8.a4 a5 9.Be2 Bd4 10.Nd4+= ed4 11.Nd5 Bd5 12.ed5+/– Nd5 13.Bd4 Nf4 14.0-0 Ne2 15.Qe2+– Kf7 16.Qf3 d5 17.c4 Ra7 18.cd5+– Re8 19.Rfe1 Re1 20.Re1 c6 21.Qh5 g6 22.Qh7 Kf8 23.Qh8 Kf7 24.Qd8 c5 25.Qf6 Kg8 26.Re8 Kh7 27.Rh8# (27.Qh4#) 1–0. amador – mduerr (1685), net–chess.com, 2007.

5.Qh5 g6 6.Qh4 h5 7.Qg3 h4? (better is 7...Ne7=) 8.Qg6+– Kf8 9.Bc4 Be7?? (better is 9...Qe8 10.Qe8 Ke8+/–) 10.Qf7 1–0. Woelfelschneider,Peter – Krahl,Wolfgang, KO–018.1.8, 2001.

5.Bc4 a6+=.

5.Bc4 Bb7 6.Bg8 Rg8= 7.Qh5 g6 8.Qh7 Rg7 9.Qh4 Be7 10.Qh8 Kf7 11.Qd8 Bd8 12.d3 d5 13.f3 Nd7 14.Nd2 a6 15.a4 Nc5 16.ed5 Bd5 17.Ne2 Kg8 18.Nc3 Be6 19.Nce4 Bf5 20.Nc5+– bc5 21.Ne4 Be4 22.fe4 g5? 23.Ba3 Rc8?? 24.Bc5 c6?! 25.b6 Rb8 26.a5 Rf7 27.Rf1 g4 28.Rf5 Rg7 29.Kf2 Rh7 30.Kg3 Kg7 31.h3 gh3 32.gh3 Kg6 33.h4 Rh5 34.Raf1 Rb7 35.Rh5 Kh5 36.Rf5 Kg6 37.h5 Kh6 38.Bf8 Kh7 39.h6 Rf7 40.Bg7 Be7 41.c3 Bc5 42.Rf6 Rf6 43.Bf6 Kh6 44.Be5 Kg6 45.d4 Be7 46.b7 1–0. einaar (2175) – mleek, net–chess.com, 2007.

5.Bc4 c6 6.bc6 Nc6 7.Nf3 Bb7 (7...f5 8.d3+=) 8.Nh4 (8.d4 a6+=) 8...Nge7= 9.0-0 Na5 10.Be6 (better 10.Bb5 Kf7 11.Qg4+=) 10...g5?? (better 10...Be4 11.d4 Bb7=+) 11.Qh5+- Ng6 12.Ng6 hg6 13.Qg6 Ke7 14.Qf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.d4 a6 6.Nf3+=.

5.d4 Bb7 6.Bd3 (6.d5 Ne7+=) 6...f5 (6...ed4 7.Bd4 a6 8.Nc3+=) 7.Nd2 (7.Nd2 ed4 8.Bd4+=; 7.Qh5 g6 8.Qe2 fe4 9.Be4 d5+=). pierre (2190) – AndrewDev, internet, 2007.

4.c4 a6 A) 5.Qa4 b6 (5...d6 6.e4 Nd7 7.Be2 Be7 8.Nc3 Nb6=; 5...d5 6.cd5 Qd5 7.e4 Qd7 8.Nf3 b6+=; 5...Ne7 6.e4 b6 7.Nc3 Bb7 8.Nf3 Ng6=; 5...Be7 6.Nc3 b6 7.Nf3 Nh6 8.Nd5 Bb7=) 6.Nc3 Bb7 7.ba6 Ra6 8.Qb3 Nc6=; B) 5.ba6 Na6 (5...Ra6 6.Nc3 Nc6 7.e4 d6 8.Nf3 f5=; 5...ba6 6.Nc3 Nc6 7.Rb1 Rb8 8.e4 Nh6=) 6.e4 d6 7.Qb3 f5 8.Nc3 Nb4=; C) 5.a4 ab5 (5...d5 6.cd5 Qd5 7.Nc3 Qd8 8.e4 Be6=) 6.ab5 Ra1 7.Ba1 d5 8.cd5 Qd5=; D) 5.Nc3 ab5 (5...d6 6.ba6 Na6 7.Nf3 f5 8.d3 Nf6=; 5...Ne7 6.ba6 Na6 7.e4 Nc6 8.Nd5 Nab4=; 5...Nh6 6.Nd5 ab5 7.cb5 Nf7 8.e3 Be7=; 5...Be7 6.Nd5 b6 7.ba6 Na6 8.Qb3 Nb4+=) 6.Nb5 Nc6 7.e4 d6 8.Nf3 f5=; E) 5.Na3 d6 (5...d5 6.cd5 Qd5 7.Qc2 Be6 8.e4 Qd8=) 6.e4 f5 7.ef5 Bf5 8.Qf3 Qd7=.

4.c4 d6 5.e4 f5 6.Nc3 Nf6 7.Bd3 Be7 8.Nf3 f4 9.g3 Bg4 10.Be2 0-0 11.gf4 ef4 12.Rg1 a6 13.a4 Bf3 14.Bf3 Nbd7 15.Nd5 Nd5 16.Rg7 (16.Rg7 Kh8 17.Re7 N5f6 18.Re6+/–; 16.cd5?! Bf6 17.d4 ab5 18.ab5 Qb6+=; worse is 16.ed5 Bf6 17.d4 Nb6+=) 1–0. Van Esbroeck,Dirk – Goepfert,Christian, SN–2010-0-00292, 2010.

4.e3 Qb6 5.Nc3+= d6 6.Nd5 Qd8 7.Bc4 Ne7 (better is 7...Nd7!?+=) 8.Qh5+/– Ng6 9.f4 Qd7? (better is 9...Kd7+–) 10.f5! Qf5 11.Qf5 Bf5 12.Nc7 Kd8 13.Na8 Be4 14.Be2 (14.b6 Bg2 15.ba7 Nd7+/–) 14...Bg2 15.Bf3 Bh1 16.Bh1 Kc8 17.b6 ab6 18.Nb6 Kc7 19.Nd5 Kd7 20.c4 Nc6 21.Bc3 Be7 22.Ne2 f5 23.Rb1 Rb8 24.Ng3 Ke6 (24...Bh4 25.Ke2 Bg3 26.hg3+–) 25.Nc7 Kd7 26.Na6! Ra8 (26...ba6 27.Bc6 Double attack) 27.Rb7 Kc8 (27...Kd8 28.Rb6 Ra7 29.Rc6+–) 28.Rc7 (28.Rc7 Kd8 29.Rc6+–) 1–0. pierre – blackrowman, ChessWorld.net, 2006.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c5).

4.e4 d6 5.Bc4 f5 (5...a6 6.ba6 Na6 7.Nc3 Nc7 8.Qh5 g6+=; 5...Ne7 6.Qh5 g6 7.Qf3 f5 8.Ne2 Nd7+=; 5...Nh6 6.Nc3 Nd7 7.Nd5 Nb6 8.Nb6 Qb6+=; 5...Be7 6.Nc3 a6 7.a4 ab5 8.ab5 Ra1+=) 6.Qf3 Nh6 7.Nc3 fe4 8.Ne4 Bg4+=.

5.cd5 Qd5 6.Nc3 Qd8 7.e3 Be6 8.Nf3 Be7 (8...Nd7 9.Rc1=) 9.d4+= ed4 10.ed4 Nd7 11.Be2 (11.Qe2 Bg4 12.Rd1 Rc8+=) 11...Nh6 (11...Nb6 12.0-0+=) 12.0-0 (12.d5 Bf5+=) 12...Bf5 (12...Nb6 13.dc5 Bc5 14.Ne4 Qd1 15.Rfd1+/–) 13.Nh4 (13.Nd5 0-0+/–) 13...cd4+= 14.Qd4 (14.Nf5 Nf5 15.Nd5 Ne5 16.Ne7 Qe7+= (< 16...Ke7 17.Re1+/–)) 14...Ne5 (14...Be6 15.Rad1 Nc5 16.Qe3+/–) 15.Nf5+/– Nf5 16.Qf4 Nd6 17.Rfd1 0-0 18.Nd5 Nef7 (18...Re8!?+/–) 19.Bg4 (19.Ne7?! Qe7 20.Re1 Ne5+/–) 19...f5 20.Ne7 (20.Qd4!? Bf6 21.Nf6 Qf6 22.Qf6 gf6+/–) 20...Qe7+/– 21.Bh5 (21.Bf5 Nb5 22.Qg4 Qg5+/–) 21...Nb5 (better is 21...Rad8!?+=) 22.a4+– g6 (22...g5 23.Qg3 f4 24.Qb3+–) 23.Bf3 (better is 23.ab5 gh5 24.Rd7+– (24.Qf5?! Rfe8+–)) 23...Nbd6? (better is 23...Qc7 24.Qc7 Nc7+/–) 24.Qd4 Ng5 (24...Qe5 25.Qe5 Ne5 26.Be5 Ne4+–) 25.Bd5 ½–½. Autengruber,Daniel – Mikulec,Dragan, NB MII Germany, 1993.

5.cd5 Qd5 6.Nc3 Qd8 7.Nf3 Be6 8.a3 Nd7=.

5.cd5 Qd5 6.Nc3 Qe6 7.e3 b6?? (7...Ne7!?=) 8.Qh5?? (better is 8.Qf3 e4 9.Ne4+–) 8...Qf7+= 9.Qf7 Kf7 10.Bc4 Be6 11.Be6 Ke6 12.Nge2 Nh6 13.0-0 (13.d4 a6+=) 13...Bd6 14.Ne4 Rd8 15.d4 White fights for the Initiative 15...ed4 16.ed4 cd4 (16...a6!? 17.dc5 Bc5=) 17.Nd4+= Kf7 18.Nd6 Rd6 19.Rac1 Nd7 20.Rfe1 Ne5 21.f4 (better is 21.Rc7!? Kg6 22.Bc3+=) 21...Nd3+= 22.Rc7 Kg6 (22...Kg8 23.Ree7 Nb2 24.Rg7 Kf8 25.Rh7 Rd4 26.Rh6+=) 23.Ree7 Nb2?? (better is 23...Rg8 24.Ba1 Nf4=) 24.Rg7 Kh5 25.Rc3 1–0. Mroz,Antoni – Przybylko,Mieczyslaw, corr Poland, 1989.

5.cd5 Qd5 6.Nc3 Qf7 7.e4 (7.Qa4 Nd7 8.b6 Qe6=) 7...Be6 8.Nge2 (8.Be2 Bd6=) 8...Bd6 9.d3 Nh6 10.Ng3 0-0 11.Be2 Nd7 (11...Qd7!?+=) 12.Bc1=. Borrmann,Fritz – Palmiero, corr, 1987.

5.e3 d4 6.Bd3 f5 7.Nh3 Nf6 8.0-0 e4+=.

5.e3 Be6 6.cd5 Qd5 7.Nc3 Qd8 8.Nf3 Nd7=.

5.Nc3 d6 6.Nf3 Nd7 7.e3 f5 8.e4 Be7 9.Bd3 0-0 10.0-0 Nf6 11.h3 Bd7.

5.Nc3 d6 6.Nf3 Be6 7.e3 Nd7 8.Qb3 f5 9.d3 Be7 10.Be2 0-0 11.0-0 f4.

5.e4 A) 5...Be7 A1) 6.Nc3 0-0 (6...d6 7.Qh5 Nf7 8.Bd3 0-0 9.Nd5 g6 10.Qd1 Nd7 11.a4 a5) 7.Nf3 d6 8.Bd3 f5 9.Qc2 f4 10.0-0 Nd7 11.Nd5 Nf6; A2) 6.Nf3 0-0 (6...d6 7.Nc3 0-0 8.Bd3 f5 9.Qc2 f4 10.0-0 Nd7 11.Nd5 Nf6) 7.Bd3 d6 8.0-0 f5 9.Nc3 Nd7 10.h3 Nf6 11.Re1 Bd7; A3) 6.Bd3 0-0 (6...d6 7.Nc3 0-0 8.Nf3 f5 9.0-0 Nd7 10.Qc2 f4 11.Nd5 Nf6) 7.Nf3 d6 8.0-0 f5 9.Qc2 f4 10.Nc3 Nd7 11.Nd5 Nf6; A4) 6.Qh5 Nf7 7.Nc3 0-0 8.Nd5 d6 9.Nf3 Nd7 10.Bd3 g6 11.Qh4 Nb6; B) 5...d6 B1) 6.Nf3 Be6 (6...Be7 7.Nc3 Be6 8.Bd3 Nd7 9.0-0 Nb6 10.Qe2 0-0 11.a4 a5; 6...Nd7 7.Bd3 Be7 8.Nc3 0-0 9.0-0 f5 10.Qc2 f4 11.Nd5 Nf6) 7.Nc3 Be7 8.Bd3 Nd7 9.0-0 f5 10.Qc2 0-0 11.a4 f4; B2) 6.Bd3 Be6 (6...Be7 7.Nf3 0-0 8.Nc3 Be6 9.0-0 Nd7 10.a4 Nf7 11.a5 a6; 6...Nd7 7.Nc3 Nb6 8.Nf3 Be6 9.Qe2 a5 10.0-0 Be7 11.h3 0-0) 7.Nc3 Be7 8.Qh5 Bf7 9.Qe2 0-0 10.Nf3 a5 11.0-0 Nd7; B3) 6.Qb3 Be7 (6...Nd7 7.Nc3 Be7 8.Bd3 0-0 9.Nge2 a5 10.0-0 Nb6 11.a4 Qc7; 6...Be6 7.Nf3 Be7 8.Bd3 0-0 9.Nc3 Nd7 10.0-0 f5 11.Nd5 Nb6; 6...f5 7.Nc3 Be7 8.Bd3 0-0 9.Nf3 Nd7 10.0-0 Nf6 11.h3 Be6; 6...a6 7.Nf3 Be6 8.Nc3 Be7 9.Bd3 0-0 10.Nd5 ab5 11.cb5 Nd7) 7.Nc3 0-0 8.Nf3 Nd7 9.Bd3 f5 10.0-0 Nf6 11.h3 Be6; B4) 6.Nc3 Nd7 (6...Be6 7.Nf3 Be7 8.Bd3 0-0 9.0-0 Nd7 10.Qe2 f5 11.a4 Rb8) 7.Bd3 Nb6 8.Nf3 Be6 9.Qb3 a5 10.a4 Be7 11.0-0 0-0.

5.ed5 Qd5 6.Nc3 Qf7 7.Be2 Ne7 8.Bh5 Ng6=.

5.ed5 Qd5 6.Nc3 Qf7 7.g3 a6 8.Bg2 Bd6 9.a4 Ra7 (9...Nh6!?+/–) 10.Nge2 Nh6 11.0-0 0-0 12.d4 cd4 13.Nd4 Kh8 (13...ed4? 14.Qd4 ab5 15.Qd6+–) 14.b6 Ra8 15.Ndb5 ab5 16.Qd6 Nf5 17.Qc7 ba4 (17...b4!? 18.Nb5 Nc6+–) 18.Na4+– Na6 (18...Nc6 19.Nc5 Ra1 20.Ra1 (20.Ba1?! Qe7 21.Bc6 Qc7 22.bc7 bc6+–) 20...Qc7 21.bc7+–) 19.Qf7 Rf7 20.Nc5! Rb8 (20...Nc5 21.Ra8 Pinning (21.Ra8 Deflection; 21.Ra8 Clearance)) 21.Rfd1 Rf8 22.Nd7 Bd7 23.Rd7 Nc5 24.Rc7 Ne6 25.Rb7 Rb7 (25...Rbd8 26.Ba3 Rg8 27.c4+–) 26.Bb7 Rb8 27.Bc8! Nfd4 (27...Rc8 28.b7 Double attack (28.b7 Decoy; 28.b7 Passed pawn)) 28.Bd4 Nd4 (28...Nd8 29.Be5! fe5 30.b7 Nb7 31.Bb7+–) 29.b7 Kg8 (29...g5 30.Ra8 Rb7 31.Bb7 Kg7+–) 30.Ra8 Nc6 31.Bd7 (31.Bd7 Kf7 32.Bc6 Rb7 33.Bb7+–) 1–0. forsetinn (1980) – gobbojr (1735), gameknot.com, 2013.

4.a4 a6 5.e3 ab5 (5...d5 6.d4 ed4 7.Bd4 Bd4 8.Qd4=) 6.ab5 Ra1 7.Ba1 Ne7 (7...d5 8.d4 ed4 9.Bd4 Bd4 10.Qd4=) 8.c4 (8.d4 Bb4 9.c3 Ba5+=) 8...0-0 9.Ne2 d6 10.Ng3 Bg4?? (better 10...Bb6=+) 11.d4?? (11.Qg4 f5 12.Qh4 Qe8+-) 11...Nd7 (better 11...Bd1 12.Kd1 Bb4-+) 12.Qc1 (better 12.Qg4 f5 13.Qh4 ed4 14.ed4 Bb4 15.Bc3 Bc3 16.Nc3+-) 12…Bb6 (12...ed4 13.ed4 Bb4 14.Bc3=) 1-0. RichardSommer (2070) - BorninUSSR (1970), lichess.org, 2020.

4.a4 b6 5.e3 Bb7 6.c4 d5 (6...Ne7 7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3=) 7.cd5 Bd5 8.Nc3 Bb7 9.Nf3 Ne7 10.Be2 0-0 (10...a6 11.d4 ed4 12.ed4+=) 11.0-0+= Nd7 12.d4 ed4 (12...Bd6 13.Qb3 Kh8 14.Rfd1+=) 13.Nd4+- Bd6? (13...Bd4 14.Qd4 Ne5 15.Rfd1+-) 14.Bf3?? (better 14.Ne6 Qe8 15.Nf8 Nf8 16.a5+-) 14...Qe8?? (better 14...Bf3 15.Qf3 Ne5+-) 15.Bb7+- Rb8 16.Bc6 Nc6 17.Nc6 (worse 17.bc6 Ne5+-) 17...Rc8 (17...Ra8 18.Qd5 Qf7 19.Rfd1+-) 18.Na7 Ra8 (18...Qe5 19.g3 Ra8 20.Nc6+-) 19.Nc6 Qg6 (19...Ne5 20.Ne4 Qe6 21.Nd6 cd6 22.Qd5+-) 20.Qf3 (20.Qd5 Qf7+-) 20...Ne5 21.Ne5 Be5 22.Nd1 (22.Nd5 Kh8 23.Bd4 Bd4 24.ed4 Qf7+-) 22...Bd6 23.Rc1 (23.Qd5 Qf7 24.Nc3 Be5+-) 23...Rae8 (23...Ra4 24.Nc3 Rh4 25.h3+-) 24.Bd4 Re4 (24...Qh6 25.h3 Rd8 26.Rc6+-) 25.Nc3 Rh4 Threatening mate... how? 26.g3 Rh5 27.Nd5 Qh6 (27...Rf5 28.Nf4 Qf7 29.Rfd1+-) 28.Qg2 (28.Nc7!? Bc7 29.Rc7 Rh2+-) 28...Rf7 29.a5 (29.Rc6!? Rd7+-) 29...ba5 30.Rc6 (30.Ra1 Qg5 31.e4 Qg6+-) 30...Qg5 (30...Rd7 31.Ra6 Be5 32.f4 Rh2 33.Nf6 gf6 34.Qh2 Qh2 35.Kh2 Bd4 36.ed4+-) 31.Nf4 (better 31.e4 Qg4 32.b6 Rd5 33.h3+- (worse 33.ed5 Qd4 34.Rb1 Qd3+-)) 31...Rh6 (31...Bf4 32.gf4 Qg2 33.Kg2 Rb5+-) 32.b6 (better 32.Rd6 Rf8 33.Ne6 Qf5+-) 32...Qb5 33.bc7 (33.Ne6 Be5+-) 33...Bc7 34.Ne6 Qb7 35.Rc7 (35.Nc7!? Rh5 36.Rfc1 Re7+-) 35...Rc7 36.Nc7 Qc7 37.Qa8 Kf7 38.Qd5 Kg6 39.Qf3 (39.Qe4 f5 40.Qe6 Kg5 41.h4 Kg4 42.f3 Kg3 43.Qf5 Rg6 44.Be5 Qe5 45.Qe5 Kh4 46.Kf2 Rg2 47.Kg2 a4 48.Rh1) 39...Kf7 (39...Qd7 40.Qe4 f5 41.Qa8+-) 40.Qe4 (40.Rb1 Qd6 41.Qb7 Qe7 42.Qd5 Kg6 43.Rb5+-) 40...Kg8 (40...Qe7 41.Qd5 Qe6 42.Qa5+-) 41.Qd5 (41.Qe8) 41...Qf7+- 42.Qd8 Qf8 43.Qd5 (43.Qa5 Kf7 44.Qa2 Kg6 45.Qc2 f5 46.Rb1+-) 43...Kh8?? (43...Qf7 44.Qa5 Rh5+-) 44.Qd8 (44.Qd8 Qd8 45.Ra1-+; better 44.Rc1 Qe8 45.Qf5+-) 1-0. RichardSommer (2125) - cocolocuaz (2070), lichess.org, 2020.

4.a4 Bb6 5.e3 a5 (5...d5 6.a5 Bc5 7.d4 ed4 8.ed4=) 6.c4 (6.Bd3 g6=) 6...c6 (6...d6 7.Qh5 g6 8.Qh4=) 7.Nf3 cb5 8.ab5 d5 9.Be2 (9.d4 dc4 10.Bc4 ed4 11.Nd4 Ne7+-) 9...dc4 10.Bc4 Nd7 (10...Bg4 11.0-0+=) 11.Bg8 (11.d4 e4 12.Nfd2 f5+=) 11...Rg8 12.0-0 Rh8 13.Ne5?? (better 13.Nc3+=) 13...fe5-+ 14.Qh5 (14.f4 Qe7-+) 14...Ke7 (14...g6 15.Qe2-+) 15.Be5 (15.f4!? g6 16.Qh6 Qf8 17.Ba3 Bc5 18.Qg5 Ke8-/+) 15...g6-+ 16.Qg5 White gets the initiative 16...Kf7?? (better 16...Ke6 17.Qd8 Rd8-+ (17...Bd8?? 18.Bh8 a4 19.Nc3+-)) 17.Qf4+- Nf6 18.Nc3 Re8? (better 18...Bf5 19.Qf3 Re8 20.Bf6 Qf6+=) 19.Ne4?? (better 19.Bf6 Qf6 20.Qf6 Kf6 21.Nd5 Kf7 22.Nb6+-) 19...Re5= 20.Qe5 Bc7 21.Qf6 Qf6 22.Nf6 Kf6 23.d4 (23.Ra4 Bf5 24.Rc1 Bb6=+) 23...Bd7 24.Rfc1 Bd6 (24...Bd8!?=+) 25.e4+= Bb5 (25...Ke7!?+=) 26.e5+- Be5? (better 26...Ke6 27.ed6 Bd7+-) 27.de5+- Ke5? (27...Ke6 28.Rc5 Bc6 29.Rca5 Ra5 30.Ra5 g5+-) 28.Rc5 Kd4 29.Rb5 b6 (29...Kc4 30.Rb7 a4 31.Rh7+-) 30.Rb6 (30.Ra4 Kc3 31.Rb6 Ra7+-) 30...Rc8 (30...Kc5 31.Rb2+-) 31.g3 Kc5 32.Ra6 (32.Ra6 Kd4 33.R6a5+-) 1-0. RichardSommer (2030) - Legolas2006 (2115), lichess.org, 2020.

4.a4 Ne7 5.e3 0-0 6.c4 d5 7.Nf3 Be6 8.cd5 Nd5 9.Be2 (9.Qc2 Qd6=) 9...Nd7 (9...a6 10.Qc2 Bd6 11.Bd3=+) 10.0-0= a6 (10...Bd6 11.e4 Nf4 12.d4=+) 11.d4 ed4 12.Nd4 Bd4 13.Bd4 ab5 14.ab5 Ra1 15.Ba1 Qa8 16.Nd2 Ne7 (16...Ne5 17.Bd4+=) 17.Bc4 (17.Qc2 Nd5+-) 17...Bc4+= 18.Nc4 Nb8 (18...Qe8 19.Qd4+=) 19.Qb3 (19.Bb2 b6+-) 19...Kh8 20.Bd4 Nf5 (20...Nd7 21.Ra1 Qe8 22.e4+-) 21.Ra1 Nd4 Threatening mate: Qxa1 22.Ra8?? (better 22.Qb2 Qa1 23.Qa1 Nb5 24.Qa5+-) 22...Nb3-+ 23.Nd2 (23.Ra7 Nc5 24.h3-+) 23…Nd2 (23...Nd2 24.Ra7 Rc8-+) 0-1. RichardSommer (2050) - destinyfns (1995), lichess.org, 2020.

4.c4 a6 5.Nc3 ab5 6.Nb5 c6–/+ 7.Nc3 Ne7 8.e3 d5 9.Nf3 e4 10.Nd4 g6 11.Nce2 Nf5 12.g3 Nd4 13.Nd4=+ Qe7 14.cd5= cd5 15.Bb5 Bd7 16.Qg4 f5 17.Bd7 Nd7–/+ 18.Qh3 Ne5 19.0-0 Rg8 20.f4 Ng4 21.Nb5 Kd7 22.a4 h5 23.Ba3 Rgc8 24.Rfc1 Ne3?? 25.Bc5+– Rc5 26.de3 Rc1 27.Rc1 Qb4 28.Rc7 Kd8?? 29.Qh4 Ke8 30.Qf6 Qe1= 31.Kg2 Qe2 32.Kh3 Qg4 33.Kg2 ½–½. gtate (1920) – afilby (1980), net–chess.com, 2004.

4.c4 c6 5.a4 d5 6.e3 d4 7.ed4 ed4?? (7...Bd4 8.Bd4 Qd4 9.Nc3=) 8.Nf3 (better 8.Qh5 Kf8 9.Qc5 Kf7 10.Qd4+-) 8...Bg4 (8...d3 9.Qb3 Bf5 10.Ba3 Ba3 11.Ra3=+) 9.d3 (9.Qb3 Qe7 10.Be2 Nd7=) 9...f5 (9...Qe7!? 10.Be2 Bf3 11.gf3 f5=+) 10.Be2= Nf6 11.0-0 0-0 12.Nbd2 Nbd7 (12...Qd6 13.Nb3 Bf3 14.Bf3+=) 13.Re1 (13.Nd4 Be2 14.Qe2+/-) 13...Qe8 (13...Bf3!? 14.Bf3 Qc7+=) 14.Nb3 (14.Nd4 Be2 15.Re2 Qg6+-) 14...Bd6 (better 14...Bb4 15.Nfd2 Qb8 16.bc6 bc6 17.Bd4 c5 18.Bf6 Nf6+/-) 15.Rc1 (better 15.bc6 bc6 16.h3+-) 15...c5= 16.Ng5?? (better 16.h3 Bh5 17.a5=) 16...Qh5-+ 17.h3 Be2 (better 17...Qg5 18.hg4 fg4-+) 18.Qe2=+ Qg5 (18...Rfe8 19.Qd2=+) 19.Qe6 Kh8 20.Qd6 Nh5?? (better 20...f4=+) 21.Qd7+- Nf4 22.Qb7 Nh3?? (22...Nd3 23.Ba3 f4+-) 23.Kf1 Nf4 24.Qf3 Rf6 (24...Rac8 25.Ba3 Qh6 26.Kg1+-) 25.Re5 (25.Qa8 Rf8 26.Qf8) 25...Raf8 26.Rce1 (better 26.Nc5 Rd6 27.Kg1+-) 26...h5?? (better 26...Qh4 27.Qf4 Qf4-/+) 27.Bc1+- Qg2 28.Qg2 Ng2 29.Kg2 Rg6 30.Kf1 (30.Kh3 Rf7+-) 30...f4 (30...h4 31.Nc5 h3 32.Ke2+-) 31.Re8 (31.Rh5 Rh6 32.Rh6 gh6+-) 31...Kg8 32.Rf8 Kf8 33.Bf4 Kf7 34.Bg3 Rf6 35.Re4 Rf5 (35...g5 36.Bb8 a6 37.Nc5 ab5 38.cb5+-) 36.Rh4 (36.Bb8!? h4+-) 36...g6 (36...Kf6 37.Bd6 Kg5 38.Be7 Kh6 39.Bc5+-) 37.Nd2 (37.Bd6 Kf6+-) 37...Kf6 (37...Kg7 38.Bb8 Rf7 39.Ne4+-) 38.Ne4 Ke6 (38...Kg7 39.Bb8 Rf7 40.Nc5+-) 39.Rh2 (39.Bb8 Rf8 40.Nc5 Ke7 41.Ba7 Rg8+-) 39...a6 (39...Rf8 40.Nc5 Kf5 41.a5+-) 40.Ke2 (better 40.b6 Kd7 41.b7 Rf8+-) 40…ab5 (40...ab5 41.ab5 Kd7+-). ClayPigeons (2150) - Tudlenudle (2150), Rated Bullet game, lichess.org, 2020.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Bc5).

4.e3 d6 (--> 1.b4 e5 2.b5 Bc5 3.Bb2 d6 4.e3 f6).

4.e3 Qe7 5.Bc4 d6 6.Nf3 Bg4 7.h3 Bh5 8.Be2 Qe6 (8...a6 9.0-0=) 9.Nc3 (9.Ng5 fg5 10.Bh5 g6+/–) 9...Nd7 (9...Bf7 10.0-0+=) 10.Ne4 (10.Ng5! fg5 11.Bh5 Kd8 12.Bg4+/–) 10...Bg6 11.Ng3 Bb6 Black intends e4 12.a4 a5 (12...Ba5 13.Nh4=) 13.0-0 (13.ba6 ba6 14.Nh4 Ne7+=) 13...Ne7= 14.d4 e4 (14...0-0-0 15.c4=) 15.Nd2 f5 16.d5 (16.c4 Qf7+=) 16...Qf7 (better is 16...Nd5 17.Bc4 Bf7=) 17.f3?? (better is 17.c4+=) 17...Be3–+ 18.Kh1 Bf4 (18...Nd5 19.fe4 Bf4 20.Nf5 (worse is 20.ed5 Bg3 21.Nc4 f4+=) 20...Bf5 21.Bc4+=; 18...Qd5?! 19.Bg7 Rg8 20.Bc3–+) 19.Qe1 (better is 19.Nge4 fe4 20.fe4–+) 19...0-0 (better is 19...e3 20.Nb3 Nd5–+) 20.fe4+= fe4 21.Nge4 Qe8 (21...Nd5 22.Bc4 N7b6 23.Nf6 gf6 24.Rf4 Nc4 25.Rc4–/+) 22.Bg4? (better is 22.c4!?+=) 22...Nd5–/+ 23.c4 Bd2 (better is 23...Nb4!? 24.Qh4 Nd3 25.Bd7 Qd7–+) 24.Qd2+=. Acevedo,Daiana – Cirigliano,E, CSF–ch U12 Girls, 1999.

4.e3 g6 5.c4 Ne7 6.a4 d5 7.Nf3 (7.d4 ed4 8.Bd4 Bb4 9.Bc3 Qd6=) 7...e4 (7...Bb4 8.Qb3 c5 9.Bc3=) 8.Nd4 (8.Bf6 0-0 9.Bd4 Nd7 10.Bc5 Nc5+=) 8...Bd4 9.Bd4 Rf8 (9...Nf5 10.Bb2 dc4 11.Bc4+=) 10.Qb3 (10.d3 Bf5+-) 10...Nd7 (10...Be6 11.Nc3+=) 11.Nc3 c5 (11...Nf5 12.Nd5 c6 13.Nf4+-) 12.bc6 Nc6 13.Nd5 Nd4 14.ed4 f5 15.d3 (15.Qg3 Kf7+-) 15...ed3 (15...Nf6 16.de4 fe4 17.Qb5 Kf7 18.Nf6 Qf6 19.Rd1+-) 16.Bd3+- Kf7 (16...Nf6 17.0-0 Nd5 18.cd5+-) 17.0-0 Nf6 18.Nf6 Qf6 19.c5 Kg7 20.d5 Rd8 21.Rfe1 Bd7? (better 21...Qd4 22.d6 b6+-) 22.Qb7 Rab8 (22...Kg8 23.Bc4 Rab8 24.Qa7+-) 23.Qa7 Ra8 24.Qc7 Rac8 25.Qe5 (better 25.Qb6 Qd4 26.Rac1+-) 25...Rc5 26.Qe7 (26.a5 Qe5 27.Re5 Bc6+-) 26...Qe7 27.Re7 Kf6 28.Rh7 Rd5 29.Bc4 (29.Bf1!? Be8 30.a5 Rd1 31.Rd1 Rd1+-) 29...Rd4+- 30.Bb3 Be6 31.Be6?? (31.Bc2+-) 31...Ke6 (31...Rd1 32.Rd1 Rd1) 32.h3 Kf6 33.Kh2 (33.a5 Rd1 34.Rd1 Rd1 35.Kh2 Ra1+-) 33...Ra8 (33...Rd2 34.Rb1+-) 34.a5 Rd5 (34...Ra6 35.Rb7+-) 35.a6 Rd6 36.a7 Re6 37.Rb7 Re7 (37...Ree8+-) 38.Rb8 (better 38.Re7 Ke7 39.Kg3+-) 38...Raa7+- 39.Ra7 Ra7 40.Rb6 Kg5 41.g4 (better 41.g3+-) 41...Kf4? (41...f4+-) 42.h4?? (better 42.Rg6 fg4 43.hg4+-) 42...fg4 (42...Kg4 43.Rg6 Kh4 44.Kg2=) 43.Rb4 (better 43.Rf6!? Ke5 44.Rg6+-) 43...Kf5 44.Rg4?? (44.Rb3=) 44...Kf6 (better 44...Kg4 45.Kg2 Kh4-+) 45.Rg3 Kg7? (45...Ra1 46.Rf3 Kg7 47.Rd3+-) 46.Rf3?? (better 46.h5+-) 46...Kh6 47.Rg3 (better 47.Kg3!?+-) 47…Kh5 (47...Kh5 48.Rg5 Kh6+-; better 47...Kg7!?=). RichardSommer (1980) - Lean_777_2015 (2030), lichess.org, 2020.

4.e3 Nh6 5.c4 0-0 6.Be2 c6 7.Nc3 a6 8.a4 ab5 9.ab5 d5?? (better is 9...Ra1 10.Qa1 d6=) 10.Ra8+– Nd7 11.bc6 bc6 12.cd5 Nb6 13.Ra1 cd5 14.Nf3 g5 (14...Nc4 15.Bc4 dc4 16.Qc2+–) 15.0-0 g4 16.Ne1 f5 17.d4 ed4 18.ed4 Bd6 19.Qb3 Nf7 20.Nd5 (better is 20.Ba3+–) 20...Nd5 21.Bc4 Nf4 22.Bf7 Rf7 23.Ba3?? Bc7? 24.d5 Qh4? 25.d6+– Bd8 26.Qg3 Ne2–+ 27.Kh1 Ng3 28.fg3 Qg5 29.d7 Bd7 30.Nd3 Kg7 31.Nf4 Bc7 32.Bc1 Qe7 33.Bb2 Kh6 34.Ra6= Bd6 35.Ba3?? Rf6–+ 36.Bd6 Rd6 37.Rd6 Qd6 38.Kg1 Bc6 39.Re1 Qc5 40.Kf1 Bb5 41.Ne2 0–1. GULP – COUNTDOWN2MATE3, Live Game Caissa's Web, 2004.

4.e4 h5 5.Nf3 Nh6 (5...h4 6.Bc4+=) 6.h3 (6.d4 ed4 7.Nd4 Nf7+=) 6...d5 7.Bd3 Nf7 (better is 7...d4=) 8.0-0 (8.ed5 Qd5 9.Nc3 Qd8+=) 8...d4 (8...de4!? 9.Be4 f5–/+) 9.a4 (9.Qe2 g5 10.Ne1 a6=) 9...Rh6 (9...g5 10.Nh2=) 10.c4 (10.c3 dc3 11.dc3 Be6+=) 10...Rg6 (10...g5 11.Nh2+=) 11.Nh4= Rg5 12.Nf3 Rg6 13.Nh4 Rh6 14.f4 (14.Nf5 Rh7=) 14...c6 (14...ef4!? 15.Qc2 g6+=) 15.f5 a6 16.Na3 Ba3 (16...b6!?=) 17.Ba3+/– Nd7 (17...b6 18.bc6 Nc6 19.Rb1+/–) 18.Be2 (18.bc6 bc6 19.Rb1 Qa5+/–) 18...ab5 (18...Qa5+/–) 19.Bh5 (19.ab5 cb5 20.cb5+/–) 19...d3? (19...b4 20.Bb4 Qb6 21.Ba3 d3 22.Kh2+=) 20.Qg4?? (better is 20.cb5 Qb6 21.Kh2+–) 20...bc4?? (better is 20...b4 21.Bb2 Qb6 22.Kh2 Qc5+=) 21.Qg7+– Qb6 22.Kh2 Rh5 (22...c5 23.Bf7 Kd8 24.Qh6 Ra4+–) 23.Qg8 Nf8 24.Qf8 Kd7 25.Qe7 1–0. Zimmer – Hippold, corr, 1984.

4.e4 Nh6 5.c4 d6 6.Nc3 Ng4 7.Nh3 0-0 8.f3 Nh6 9.Na4 f5 10.Nc5 dc5 11.Be5 fe4 12.d4? ef3 13.Nf2 cd4 14.Qd4 Qd4 15.Bd4 Re8 16.Kd2 fg2 17.Bg2 c6 18.Rhe1 Re1 19.Re1 Bf5?? 20.Re8?? Kf7+= 21.Rd8 cb5?? 22.cb5 a6 23.Be5 ab5 24.Rb8 Ra2 25.Ke3 Ra3 26.Kf4 Ra4 27.Ne4 Be4 28.Be4+/– g5 29.Kf3 Ra3 30.Ke2 Ng4 31.Rb7 Ke6 32.Bg3?? Re3–/+ 33.Kd2 Re4 34.Rb5 Rd4 35.Kc3 Rd1 36.Rg5= Ne3?? 37.Re5+– Kf6 38.Re3 h5 39.Rd3 Rd3 40.Kd3 Kf5 41.Ke3 Kg4 42.Kf2 h4 43.Bb8 h3 44.Ke3 Kh5 45.Bg3 Kg4 46.Ke4 Kh5 47.Kf4 Kg6 48.Kg4 Kh6 49.Kh3 Kh5 50.Bf4 Kg6 51.Kg4 Kh7 52.h4 Kg6 53.h5 Kh7 54.Kg5 Kg8 55.h6 Kh7 56.Kh5 Kg8 57.Kg6 Kh8 58.Be5 Kg8 59.h7 Kf8 60.h8Q Ke7 61.Qf6 Kd7 62.Qd6 Kc8 63.Qe7 (63.Qc7) ½–½. iczker – wojciechmm, internet, 2011.

5.e3 Bf5 6.Be2 Ne7 7.Nf3 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 c6 11.bc6 Nbc6= 12.c4 dc4 13.Bc4 e4 14.Nh4+= Qa8? 15.Bc3 g5?? 16.Nf5+– Nf5 17.Bf6 Rf8 18.Bg5 Qc8 19.Qh5 Kd7 20.Qh7 Nce7 21.Be7 Be7 22.Bb5 Kd6 23.Nc3 Qc5 24.Ne4 Kd5 25.Nc5 Bc5 26.Qb7 Kd6 27.d4 Bb4 28.Rc1 Ne7 29.Qd7 1–0. tanto (1610) – amjorgy, net–chess.com, 2002.

5.e3 Bf5 6.Qh5 Bg6 7.Qd1 c6 8.Be2 Qa5 (8...Ne7 9.Nf3=+) 9.c4 (9.Nf3 Ne7=) 9...Qc7 (9...Be4 10.Nf3=+) 10.Nf3 e4 (10...dc4 11.Bc4 cb5 12.Bb5 Nc6 13.d4 ed4 14.Nd4 Bd4 15.Bd4=) 11.Nh4 Bf7 12.Nf5 (12.cd5 cd5 13.d4 Bb4 14.Nd2 Nh6=) 12...g6 (12...Be6 13.Bd4 Bf5 14.Bc5 cb5–+) 13.Ng7?? (better is 13.Ng3=) 13...Kf8–+ 14.0-0? (better is 14.cd5 Kg7 15.dc6 bc6 16.Nc3–+) 14...Kg7 15.cd5 cd5 (15...Bd5 16.d3 Bd6 17.g3–+) 16.Nc3 Bd6 17.h3 Bh2 18.Kh1 Be5 19.d4 ed3 20.Qd3 Bc3 21.Bc3 Nd7 22.Bd4 Ne5 23.Rfc1? Nd3 24.Rc7–/+ Nf2 25.Kh2? Nh6 26.Kg1 b6?? 27.Kf2+= Rhc8 28.Rac1+/– Rc7 29.Rc7 Nf5 30.Ba1 Nd6= 31.Bd3 Ne4 32.Be4 de4 33.Bd4 a6 34.Bb6 ab5=+ 35.ab5 Rb8 36.Bd4 Rb5 37.Kg3 Rg5 38.Kf4 Rf5 39.Ke4+= Rf2 40.g4 Rh2? 41.g5+– Rh3 42.Bf6 Kf8 43.Rc8 Be8 44.Kd4 Rh4 45.e4 Rf4 46.Kd5 h6? 47.e5+– hg5 48.Bg5 Rf5 49.Bf6 Rf6? 50.ef6 Kf7 51.Ke5 g5 52.Rc7 Kg6 53.Re7 Bf7 54.Kd6?? g4?? 55.Ke5+– g3 56.Rc7 g2 57.Rd7?? (57...g1Q 58.Rd3–+; better is 57.Rc1 Bc4 58.Rg1+–) 1–0. Slooooowly – jakesh, Live Game Caissa's Web, 2004.

5.e3 Bf5 6.c4 h5 (6...Nh6 7.d4 ed4 8.ed4 Bb4 9.Bc3=) 7.Nf3 e4 8.Nd4 Bg4 (8...Bd4 9.Bd4 c5 10.Bc3+=) 9.Be2 Bd4 10.Bd4 Be2 11.Qe2 Nd7 (11...c5 12.bc6 bc6 13.d3+=) 12.0-0 (12.Nc3 Qe7+-) 12...Ne5 13.Be5 de5 14.Nc3 (14.Ra3 f5+-) 14...Qd3 15.f3 (15.f4 Ne7+=) 15...f5 (15...Qe2!? 16.Ne2 ef3 17.gf3 Nh6=) 16.fe4+- fe4 (16...Qe2 17.Ne2 fe4 18.Rf5+-) 17.Qf2 (17.Qd3!? ed3 18.Rf5+-) 17...Nf6+= 18.Qf5 Exerts pressure on the isolated pawn 18...Qd2?? (better 18...0-0 19.Qe6 Kh8 20.Qe5 Qc4+=) 19.Qe5 (19.Qe6 Kd8 20.Rad1 Qd3 21.Ne4 c6 22.Rd3 Kc7 23.Qe7 Kb6 24.a5 Ka5 25.Qc5 Ne4 26.Ra1) 19...Kf7 20.Nd5 (worse 20.Qc7 Kg8 21.Nd5 Nd5 22.Qf7 Kh7 23.Qh5 Kg8 24.Qd5 Qd5 25.cd5 Rd8+-) 20...Rhe8 (20...Rh6 21.Qc7 Kg8 22.Qb7 Rf8 23.Ne7 Kh7 24.Qa7 Rf7+-) 21.Rf6! gf6 (21...Kg8 22.Qg5 Qb2+-) 22.Qf6 Kg8 23.Rf1 (better 23.Qg5 Kh8 24.Qh5 Kg7 25.Qg5 Kh8 26.Qh6 Kg8 27.Rf1 Qd5 28.cd5+-) 23...Re6 (23...Qd5 24.cd5 Rf8 25.Qg6 Kh8+-) 24.Qe6 Kg7 25.Qf6 (25.Rf7 Kh8 26.Qf6 Kg8 27.Qg7) 25...Kh7 26.Qf7 Kh8 27.Nf6 (27.Qh5 Kg7 28.Rf7 Kg8 29.Qh7) 27...Qe3+- 28.Kh1 Qh6 29.Nd7 (better 29.Qc7!? e3 30.Qb7 Rf8+-) 29...Rg8 (29...e3 30.Ne5 e2 31.Re1+-) 30.h3 (better 30.Qf5 Qg5 31.Qe4+-) 30...h4 (30...Qg6 31.Qg6 Rg6 32.Re1+-) 31.Rf6 (31.Rf5 Qc1 32.Kh2 Qh6 33.Rh5 Rg2 34.Kg2 Qh5 35.Qh5 Kg7 36.Qg5 Kf7 37.Qf6 Ke8 38.Qe6 Kd8 39.Ne5 e3 40.Qd7) 31...Qc1 32.Kh2 Rg2 (32...Rg2 33.Kg2 Qg5 34.Kh1 Qc1 35.Rf1 Qf1 36.Qf1 Kh7 37.Nf6 Kg7 38.Ne8 Kg8 39.Qf6 e3 40.Qg7; 32...Qg5 33.Rf2 e3+-). RichardSommer (1980) - Jorgenberg (2045), lichess.org, 2020.

5.e3 Bf5 6.Nf3 Bb6?? 7.c4?? (better 7.a5+-) 7...Ne7= 8.Be2 Nd7 (8...Ba5 9.Bc3 Bc3 10.Nc3=) 9.0-0 (better 9.a5 Bc5 10.0-0+=) 9...Nc5?? (better 9...c5=) 10.d4+- ed4 (10...a6 11.a5 Ba7 12.dc5 Bc5+-) 11.Nd4?? (11.ed4 a6 12.a5 Ba7 13.dc5 Bc5+-) 11...Bg6? (11...Ba5 12.Nf5 Nf5 13.Bf3+-) 12.Bf3?? (12.a5 Ba5 13.Ra5 0-0+-) 12...Rb8?? (12...Ba5 13.Nb3 Nb3 14.Qb3+-) 13.Ba3?? (better 13.a5!?+-) 13...0-0? (better 13...Bf7 14.Nd2 a5+=) 14.Bc5 Bc5 15.Ne6 Qd7? (15...Qe8 16.Nf8 Qf8 17.Nc3+-) 16.Nf8 (better 16.Nc5!? Qc8 17.Nb3 Qe6+-) 16...Rf8 (16...Kf8 17.Nc3+-) 17.Bb7 f5 18.Bd5 (18.Qf3 Bf7+-) 18...Kh8 (18...Nd5 19.Qd5 Bf7 20.Qd3+-) 19.Nc3 f4 20.Ne4 Be4 21.Be4 fe3 22.Qg4?? (better 22.fe3 Be3 23.Kh1 Rf1 24.Qf1+-) 22...ef2 23.Kh1 Qg4 24.Bf3 Qf4 (24...Qf4 25.Bg4 Bd4-+) 0-1. RichardSommer (2035) - KaiMemeN (1990), lichess.org, 2020.

5.Nc3 Be6 6.e3 Ne7 7.Qh5 Bf7 8.Qd1 0-0 9.Be2 c6 10.a4 Nd7 11.Nf3 d5 12.cd5 cd5 13.d4 Bb4 14.0-0 e4 15.Nd2 f5 16.Qb3 Ba5 17.Ba3 Nf6 18.Bb4 Bc7 19.Qa3 Re8 20.g3 Ng6 21.Rfc1 Qd7 22.a5 f4 23.ef4 Nf4 24.gf4 Bf4 25.Nd1 Ng4 26.h3 Nf2 27.Nf2 (27.Kf2 e3 28.Ne3 Be3 29.Qe3 Re3 30.Ke3 Re8 31.Kf2 Qh3–/+) 27...e3 28.Bg4 ef2 29.Kf2 Qd8 (better is 29...Qb5!? 30.Re1 Qc6+/–) 30.Re1+– Qh4 31.Kf1 Qf6 32.Nf3 h5 (32...Be6+–) 33.Bd7 Re1 34.Re1 (34.Ke1 Be8 35.Be8 Re8 36.Kd1 Re3+=; worse is 34.Ne1 Be3 35.Ke2 Bd4–/+) 34...Qg6 35.Qc3 Kh8 36.a6! ba6 37.ba6 Qa6 38.Kf2 Qa2 39.Re2 Bg3 40.Kf1 Qb1 41.Ne1 Bh4 42.Be7 Be7 43.Re7 Bg6 44.Re3 Be4+/– 45.Qb3 Qa1 46.Qc3 Rf8 47.Ke2 Qa2 48.Kd1 Qb1 49.Qc1 Qb4 50.Qc5 Qb1 51.Qc1 ½–½. Veer,Willem – Dos Ramos,Carlos, Surinam–ch Paramaribo, 2008.

5.Nf3 Qe7 6.Nc3 Be6 7.e4 Nd7 8.d4 Bb6 9.d5 Bf7 10.Be2 h5 11.h3 Nc5 12.0-0 g5 13.Qc2 g4 14.hg4? hg4–+ 15.Nd2 Nh6 16.f3?? g3 17.f4 Ne4 18.Rf2 Nf2 19.Kf1–+ Qf8 20.Nf3 Nhg4 21.Ne4 Qh6 22.Nf2 Nf2 23.Ng1 Bh5 24.Bh5 Qh5 25.Qe2 Qh1 26.fe5 fe5 27.Be5 de5 28.Qe5–+ Kd7 29.Qe6 Kd8 30.Qf6 Kd7 31.Qe6= Kd8 32.Qf6 Kd7 33.Qf5?? Ke7 34.Qe5?? Kf7–+ 35.Qf4 Kg7 36.Qg5 Kf8 37.Qf4?? Kg8–+ 38.Qg5 Kf7 39.Qf5 Ke7 40.Qg5?? Kd6–+ 41.Qf6 Kc5 42.Qe7 Kd4 43.Qg7 Kc4 44.Qb2 Qh4 45.Qc2 Kd5 46.Qd2 Ke6 47.Qe2 Kf6 48.Qf3 Kg7 49.Qc3 Qf6 50.Qf6 Kf6 51.Ke2 Rh1 52.Kf3 Ne4! 53.Ke4 Re8 54.Kf4 Rh4 55.Kg3 Rg4 56.Kf3?? Rf8 57.Kg4=+. iczker – eres2010, internet, 2011.

5.e3 0-0 6.d4 ed4 7.Bd4 Bd4 8.Qd4 d6 =.

5.e3 0-0 6.Be2 a6 7.a4 (7.d4 Bb4 8.Bc3 Bc3 9.Nc3 ab5 10.Nb5 d6=) 7...d5 8.Nf3 (8.d4 ed4 9.ed4 Bb4 10.Bc3 Bc3 11.Nc3 Re8+=) 8...Be6 (8...ab5 9.ab5 Ra1 10.Ba1+=) 9.Qc2 (9.d4 Bb4 10.Bc3 Bc3 11.Nc3 ab5 12.ab5 Ra1 13.Qa1 Nd7=) 9...Nd7 (9...ab5 10.cd5 Qd5 11.Nc3+=) 10.0-0 Nb6 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.d3 (11.cd5 Qd5 12.d4 ed4 13.Bd4 Bd6+=) 11...Qd7 (11...ab5 12.cb5 Bb4 13.Bc3 Bc3 14.Nc3=) 12.Nbd2 (12.a5 Nbc8+=) 12...ab5 (12...dc4 13.dc4 ab5 14.ab5=) 13.ab5 Rfd8 (13...dc4 14.dc4 Rfd8 15.Ra8 Ra8 16.Ne4+=) 14.d4 e4? (14...Bf5 15.Qc3 ed4 16.ed4 Bd6+/–) 15.dc5 (15.cd5 Nbd5 16.dc5 ef3 17.Nf3 Qe8+–) 15...ef3 (15...Ra1 16.Ra1 (16.cb6 Rf1 17.Bf1 ef3+=) 16...ef3 17.Bf3+– (17.cb6?! fe2 18.Nf3 dc4 19.bc7 Qc7=)) 16.Nf3 (16.Ra8!? Na8 17.Nf3+– (17.Bf3?! dc4 18.Nc4 Qb5+=)) 16...Nc4+= 17.Bc4 dc4 18.Nd4 Bf7 (18...Ra1 19.Ra1 Ng6 20.c6 bc6 21.bc6+/– (21.Ne6?! Qe6 22.bc6 Ne7=)) 19.Ra8 Ra8 20.Rd1 Qd5 (20...Qg4 21.c6 bc6 22.bc6+= (worse is 22.Nc6 Nc6 23.bc6 Bg6–/+)) 21.c6+/– Bg6 22.Qc1 (22.Qe2 b6+=) 22...Bd3 23.cb7 (23.Ba3 Ng6 24.cb7 Qb7+=) 23...Qb7 24.Ne6 (24.Ba3!? Nc8 25.Qb2=) 24...Ra2+= (24...Qb5? 25.Nc7 Qc6 26.Na8 Qa8 27.Ba3+–) 25.Nc7 The passed pawn on b5 will quickly become a dangerous weapon (25.Ba3!? Nf5 26.Nc5 Qb5 27.Qc3+=) 25...Qc7–/+ 26.Rd3 Rb2! (26...cd3 Exploits the pin 27.Qc7) 27.Qb2 cd3 28.b6?? (better is 28.Qb3 Kf8 29.Qd3 Qc1 30.Qf1–/+) 28...d2 (better is 28...Qc2 29.Qc2 dc2–+) 29.Qd2 (better is 29.Qb3 Qc4 30.Qc4 Kf8 31.Qd3+–) 29...Qb6–+ Do you see the mate threat? 30.h3 (30.Kf1 Qb5 31.Qe2 Qb1 32.Qe1 Qe4–+) 30...Qb3 (30...Kf7 31.Qd3–+) 31.Qd8 (31.f3 Qd5 32.Qd5 Nd5–+) 31...Kf7 32.Qd7 Qd5 33.Qa7 Qd1 34.Kh2 Qd6 35.Kg1 (35.g3 f5–+) 35...Kg6 (35...Ke6 36.Qa2 Qd5 37.Qa6 Qc6 38.Qa2 Nd5 39.g4–+) 36.Qa4 Qd5 37.Qg4 (37.e4 Qc6 38.Qc6 Nc6–+) 37...Qg5 (37...Kf7 38.e4 Qe5 39.f3–+) 38.Qe4 Nf5?? (38...f5 39.Qd3–+) 39.Qe8? (better is 39.g4 Kh6 40.Qf5 Qf5 41.gf5=) 39...Kh6–+ 40.Qa4 (40.Qe6 Nh4 41.Qc6 Qa5–+) 40...Nh4 Threatening mate: Qxg2 41.Qe4 Ng6 42.Qb7 (42.g4 Qe5 43.Qd3 Nh4–+) 42...Qe5 43.Qb4 Qa1 44.Kh2 Ne5 (44...Qf1!? 45.Kg3–+) 45.Qh4 Kg6 46.Qg3 (better is 46.f4!? Nc6 47.Qg4 Kf7 48.Qh5 Kf8 49.Qh7–/+) 46...Kf7–+ 47.Qh4 Qb2 (47...Qf1 48.Qh5 Kf8 49.f4–+) 48.Kg1 (better is 48.Qh5 Kf8 49.f4–+) 48...Qe2 49.Qg3 (49.Qf4 Ke6–+) 49...h6 (49...Nd3 50.Qc7 Kg6 51.Qg3 Kf5 52.Qg7 Qf2 53.Kh2 Qe3 54.Qh7 Ke6 55.Qg8 Ke5 56.Qe8 Kf4 57.Qg6–+) 50.f4 (50.Qf4 g6–+) 50...Nd3 (50...Nc4!? 51.Qf2 Qd3 52.f5–+) 51.f5 Qe1 (51...Ne5 52.Qf2 Qc4 53.g4–+) 52.Qe1 Ne1 53.Kf2 Nd3 54.Kf3 (54.Ke2 Nc5–+) 54...Ne5 55.Kf4 h5 56.g4 (56.e4 g5 57.fg6 Ng6 58.Ke3 Ke6–+) 56...h4 (56...hg4 57.hg4 g5 58.fg6 Kg6 59.e4–+) 57.e4 (57.g5 Ke7–+) 57...Ke7 (57...g5 58.fg6 Kg6 59.g5 Nd3 60.Ke3 Kg5 61.Kf3–+) 58.Ke3?! (58.g5–+) 58...Kd6 59.Kf4 Kc5 (59...Nf7 60.Kf3–+) 60.Ke3 (60.g5 Nc4–+) 60...Kc4 61.Kf4 Nd3 (61...Nf7 62.Kf3–+) 62.Ke3 Kc3 63.Kf3 Kd4 64.e5 (64.g5 fg5 65.Kg4 Nf2 66.Kg5 Ke4 67.Kh4 Kf5–+) 64...Ne5 (64...fe5!? 65.g5 e4 66.Kg4–+) 65.Kf4 Nd3 66.Kf3 Ke5 67.g5 (67.Ke3 Nf4 68.Kf3 Nh3–+) 67...Kf5 (67...fg5 68.Kg4 Kf6 69.Kh5–+) 68.g6 (68.gf6 gf6 69.Ke3 Nf2–+) 68...Ne5 69.Kg2 Kf4 70.Kh2 Ng6 71.Kg2 Ne5 72.Kh2 Nf3 73.Kg2 g5 74.Kh1 f5 75.Kg2 g4 76.hg4 fg4 77.Kh1 Ne1 78.Kh2 g3 79.Kg1 h3 80.Kh1 Kf3 81.Kg1 Nd3 82.Kh1 Nf2 83.Kg1 h2 0–1. Cornacchini,Gabriele – thewiz (1755), Swiss, 2001.

5.e3 0-0 6.Be2 d6 7.d4 Bb4 8.Nd2 =+.

5.e3 0-0 6.Nf3 d5 7.Be2 (7.d4 ed4 8.Bd4 Bd4 9.Qd4 a6=) 7...dc4 (7...e4!? 8.Nd4 a6=+) 8.Bc4+= Kh8 9.0-0 Nd7 10.a4 (10.d4 Bd6+=) 10...Nb6 11.Bb3 Bg4 12.h3 Bh5 13.g4 Bg6 14.Nc3 (14.d4 ed4 15.Nd4 Qd6=) 14...Nbd5 (better is 14...Bd3!?–/+) 15.Nd5= Nd5 16.d4 ed4 17.Nd4 Nb6? (17...Qd6 18.Nf5 Bf5 19.Qd5 Bc8+/–) 18.Ne6+– Qd1 (better is 18...Qe7+–) 19.Rad1 (< 19.Bd1 Bd6 20.Nf8 Rf8+–) 19...Be4? (19...Bb4 20.Rd4 Bd6 21.Nf8 Rf8 22.Rc1+–) 20.Nf8 (better is 20.Nc5 Bf3 21.Rd4 c6+–) 20...Rf8 21.a5 Nc8 22.b6?? (better is 22.Rd7 Nd6 23.Rc7+–) 22...ab6+/– 23.ab6 Nb6 24.Be6 (24.Bd4 Nd7+/–) 24...Bf3 25.Rc1 Bb4? (better is 25...Bd6!?+=) 26.Rc7+– Nd5? (better is 26...Re8 27.Bb3 h6+–) 27.Rb7 Nc3 (27...Nf4 28.Rb4 Ne6+–) 28.Rc7 (better is 28.Rb4 Ne4 29.Bd5+–) 28...Ne2 29.Kh2 Bd6 30.Be5 Be5 (30...fe5?! 31.Rd7 Bb8 32.h4=+). stoker – Schnick, Live Game Caissa's Web, 2004.

5.e3 c6 6.a4 (6.d4 Bb4 7.Bc3 Bc3 8.Nc3 d6=) 6...a6 (6...0-0 7.d4 ed4 8.Bd4=) 7.Nc3 (7.d4 Bb4 8.Nd2 ed4 9.Bd4 0-0=) 7...0-0 8.Ne4 (8.d4 Bb4=) 8...Bb4 (8...d6 9.Nc5 dc5 10.Qc2+=) 9.Qb3= a5 (9...c5 10.Nd6=) 10.Nf3 (10.c5!? Kh8 11.Nd6+=) 10...d5+= 11.cd5 cd5 (11...Qd5?? 12.Bc4+–) 12.Ng3 (12.Rc1 Rf7 13.Ng3 Nd7=) 12...Be6 (12...Bg4 13.Be2+=) 13.Be2 Nd7 14.0-0 Nc5 (14...Qb6 15.Ba3 Nc5 16.Qb1 Ba3 17.Ra3=) 15.Qd1 (15.Qa2 Qd6=) 15...d4 (15...Ne4!?+=) 16.ed4+= Nb3 17.Rb1 (17.de5 Na1 18.Qa1 A) 18...Bd2? 19.Rd1+– (19.Nd2?! Qd2 20.ef6 gf6+–); B) 18...f5+=) 17...ed4 (17...ed4 18.Bd3 Nc5 19.Nd4 Ba2+=; 17...Nd4 18.Nd4 ed4 19.Re1+=). Cornacchini,Gabriele – Willoughby,Peter, RL–2007–0-00092, 2007.

5.e3 a6 6.a4 (6.d4 Bb4 7.Bc3 Bc3 8.Nc3 d6=) 6...ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.cb5 Qa5 11.Nc3 (11.Bc3 Qc7+/–) 11...d6 12.Bc4 Bf5 13.0-0 e4? (better is 13...Nd7!?+=) 14.Nh4+– g6? (better is 14...Bg4 15.Qc2 Qd8+–) 15.Nf5 gf5 (15...Nf5 16.Ne4 Nd7+–) 16.Qh5 Kd8 17.Qh6 Nd7 18.Nd5 (better is 18.Ne4 Rf8 19.Nc5 dc5 20.Be6+–) 18...Ne5 (18...Kc8+–) 19.Qf6 Kd7 20.Qh8 Nc4 21.Qh7 Kc8 22.Qf5 Kb8 23.Qf8 Ka7 24.Bc3 Qb5 25.Ra1 Ba3 26.Bd4 Ka6 27.Qa8 1–0. GuestRMRY – guestfh, freechess.org, 2017.

5.Nf3 0-0 6.e3 d5 (6...d6 7.d4 ed4 8.Bd4 Bb4 9.Bc3 Bc3 10.Nc3=) 7.Nc3 c6 8.a4 (8.cd5 cd5 9.d4 ed4 10.Nd4 a6+=) 8...a5 (8...e4 9.d4 Bb4 10.Nd2=) 9.Qb3 (9.cd5 cd5 10.d4 ed4 11.Nd4 Bg4+=) 9...Be6= 10.d4 ed4 11.Nd4 Bd4 12.ed4 Kh8 (12...Re8 13.c5=) 13.Be2 (13.cd5 Bd5 14.Nd5 cd5+=) 13...Nd7 (13...dc4!? 14.Bc4 Bc4 15.Qc4 cb5 16.Nb5 Re8 17.Kf1 Nc6=) 14.0-0 Rb8 (14...dc4!? 15.Bc4 Bc4 16.Qc4 Nb6+=) 15.cd5+/– cd5 16.Nd5?? (better is 16.Bd3+/–) 16...Nb6–+ 17.Bf3 Nf5 18.Qc2 Nd5 19.Qe4 Qd7 20.h3 Bf7 21.Bg4 Nde7 22.Rfe1 Bg6 23.Bf5 Bf5?? 24.Qe7+– Qd5 25.Ba3 Rg8 26.Bc5 Qc4 27.Qd6 Rbd8 28.Qc7 Rc8? 29.Qb7+– h6 30.Re7 Qc3 31.Rae1 Qc4 32.Rg7 Rg7–/+ 33.Qc8?? Bc8–+ 34.Re8 Kh7 35.Rc8 Qd5 36.f3 Qf3 37.Rf8 Qg2 0–1. TIROLOCO – HOUDINI2, Live Game Caissa's Web, 2004.

5.Bd4 Bd4 6.Qd4 d6 7.e4 Be6 8.Bc4 Qe7 9.Be6 Qe6 10.Qd5 Qd5 11.ed5 Ne7 12.c4 a6 13.Nc3 Nd7 14.Nf3 Nb6 15.Nd2 Kf7 16.0-0 Rhe8 17.a4 ab5 18.ab5 Ra1 19.Ra1 Ra8 20.Ra8 Na8 21.g4 Nb6 22.f4 Ng6 23.f5 Ne5=+ 24.Nce4 Nbc4 25.Nb3? Ne3 26.h3 Nd5 27.Nd4 Ke7 28.Kf2 c5 29.Ne6 g6 30.Ng3 Nc3 31.b6 Nd5 32.Nc7 Nc7 33.bc7 Kd7 34.fg6 hg6 35.Ne4 Kc7 36.Nf6 b5 37.Nd5 Kc6 38.Nc3 b4 39.Nb1 c4 40.Ke3 d5 41.Kd4 Nf3 42.Ke3 Ng5 43.h4 Ne6 44.h5 gh5 45.gh5 d4 46.Ke2 Kd5 47.h6 Nf8 48.Kd2 Ke4 49.Kc2 d3 50.Kd2 Kd4 51.Kd1 c3 (51...c3 52.Nd2 cd2–+) 0–1. iczker – jirka67 (1610), internet, 2011.

5.Bd4 Bd4 6.Qd4 Ne7 7.e4 c6 8.c4 cb5 9.cb5 d5 10.Nc3 f5? (better is 10...de4!? 11.Qd8 Kd8 12.Ne4 Be6=) 11.ed5+/– Qa5 12.Bc4 0-0? (better is 12...Nd7+–) 13.d6 Kh8 14.de7 Re8 15.Nge2 Re7 16.0-0 Rd7 17.Qc5 h6 (17...Rd8+–) 18.Qc8 (18.Qf8 Kh7 19.Bg8 Kg6 20.h4 h5 21.Nf4 Kh6 22.Qf5 Qc3 23.Qh5) 18...Qd8+– 19.Qd8 Rd8 20.Rfd1 Re8 21.Bf7 Re5 (21...Rf8 22.Bd5 Nd7 23.Bb7+–) 22.Bg6 (22.Nf4!? Nc6 23.bc6 Rc5 24.cb7 Rb8+–) 22...a6 (22...Nc6 23.bc6 bc6+–) 23.Rd8 1–0. Fournier,Frederic – Minet,Teddy, Coupe Federation, 1996.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Ne7 8.Nf3 d6 9.Be2 Bd7 10.c4 0-0 11.0-0 c6 12.bc6 bc6 13.Nc3 Bg4 14.Ne1 Be2= 15.Qe2 Nd7 16.Nd3 Bb6 17.Ne4 d5 18.Nc3 d4 19.ed4 ed4 20.Ne4 c5 21.Nf4 Qb8 22.Nd3 f5 23.Nec5?? Nc5–/+ 24.Qe7 Nd3–+ 25.Qg5? Qc8 26.Qg3 Qc4 27.Qf3 Nc1 28.Rd1 Ne2 29.Kh1 d3 30.Qb7 Bf2 31.Qg7# 1–0. valpa – peakbagger, playchess.de, 2003.

5.a4 c6 6.d4+= ed4?? 7.Qh5+– g6 8.Qc5 de3 9.Qe3 Qe7 10.Qe7 Ke7 11.ba6 Na6 12.Nf3 Nc7 13.c4 d6 14.Nbd2 Bf5 15.Be2 Nh6 16.0-0 Kf7 17.Rfe1 Rhe8 18.a5 Re7 19.Nd4 Rae8 20.Kf1 Bd7 21.Bd3 Re1 22.Re1 Re1 23.Ke1 Na6 24.Ne4 Ke7 25.Nf6 Nb4 26.Be2 c5 27.Nf3 Nf5 28.Nh7 Bc6 29.Kd2 Be4 30.Nhg5 Bc2 31.Bc3 Ba4 32.g4 Nh6 33.Nh4 Be8 34.Bb4 cb4 35.f4 Ng8 36.Bf3 (36.Bf3 Nf6 37.f5 gf5 38.Nf5 Kd7 39.Bb7 Ng4 40.a6+–) 1–0. MarcosRamos (1760) – chessy371, internet, 2007.

5.a4 d5 6.d4 Bb6 7.a5 Ba7 8.de5 Bd7? (better is 8...Bc5+/–) 9.Qd5+– c6 10.ef6 Nf6?? (10...cd5 11.fg7 Bd4 12.Bd4 Bb5 13.gh8Q Kd7 14.Qh7 Ne7 15.Bb5 ab5 16.Qh3 Ke8 17.Qh8 Kd7 18.Qd8 Kd8+–) 11.Qe5+– (11.Qe5 Kf7 12.Bc4 Kg6 13.b6 Bb6 14.Nf3 Ba5 15.Ra5+–) 1–0. pcmvr (2400) – roadrunner (2170), net–chess.com, 2006.

5.a4 d5 6.d4 ed4 7.ed4 Ba7 8.Nf3 Bg4 9.Be2 Ne7 10.0-0 0-0 11.Nfd2 Bf5 12.c4 c6 13.cd5 Nd5 (13...Qd5?? 14.Bc4 ab5 15.Bd5 Nd5 16.ab5+–) 14.bc6 Nc6 15.Bf3 Bd3?? (15...Re8 16.Qb3 Be6 17.Re1+=) 16.Be2?? (16.Qb3 Bf1 17.Bd5 Kh8 18.Nf1 Bd4 19.Bd4 Nd4 20.Qc4 (< 20.Qb7 Rb8 21.Qa6 Qd5–/+) 20...Ne2 21.Qe2 Qd5 22.Nc3+=) 16...Be2–/+ (16...Bd4?! 17.Bd3 Bb2 18.Bh7 Kh7 19.Qc2 f5 20.Qb2=+) 17.Qe2 Re8 18.Qd1 (better is 18.Qc4=+) 18...Nd4–+ 19.Nb3 Ne2 20.Kh1 Ndf4 21.Qd8 Rad8 22.Nc3 Nc3 23.Bc3 Re2 24.Nc1 Rf2 25.Nb3 Rd3 26.Rf2 Bf2 27.Rc1 Be3 28.Na5 Bc1 0–1. valpa – adamant, playchess.de, 2004.

5.c4 ab5= 6.cb5 Ne7 7.Qh5 Ng6 8.Bd3 c6?? 9.Bg6+– Ke7 10.Bd3 cb5 11.Bb5 Ra5 12.a4 Nc6 13.Qg4 Nb4 14.Qd1 Rf8 15.Nf3 Kf7? 16.Bc4 d5 17.Bb5 Kg8 18.0-0 Bd7 19.Nc3 Bb5 20.ab5 Ra1 21.Ba1 d4 22.Ne4 Kh8 23.Nc5 Qd5 24.Nb3 b6 25.e4 Qc4 26.d3 Qf7 27.Nbd2 Qe7 28.Nb1 Qd6 29.Bb2 Na2 30.Ba3 Qd8 31.Bf8 Qf8 32.Qb3 Nb4 33.Nh4 Qc5 34.Nf5 Nc2 35.Qf7 (35.Qf7 Qe7 36.Qe7 Ne3 37.Qg7#) 1–0. stoker – hercules53, Live Game Caissa's Web, 2005.

5.d4 ed4?? 6.ed4?? Ba7 (6...Bb6 7.Bd3=) 7.a4 d6 (7...d5 8.Bd3 Ne7 9.Nf3+=) 8.Bd3+= Ne7 9.Nc3 (9.Qh5 g6 10.Qf3 ab5 11.ab5 Nd7+=) 9...Bf5 (9...Bd4!? 10.Nge2 Be5=+) 10.Bf5= Nf5 11.Nce2 (11.Nge2 Qd7+=) 11...0-0 12.Nf3 Ne7 (12...Qd7 13.Qd3=) 13.0-0+= Ng6 14.c3 (14.Qd3 d5+=) 14...f5 (14...Re8 15.Re1+=) 15.Qc1 (15.Qb3 d5+-) 15...f4 16.c4 a5 (16...c6 17.Re1+=) 17.Qc3 Bb6 (17...Nd7 18.Rfe1+-) 18.c5 dc5?? (better 18...Ba7+-) 19.dc5+- Ba7 (19...Rf7 20.cb6 cb6+-) 20.Qg7 1-0. aravind555 (1800) - remalek (1815), lichess.org, 2020.

5.d4 ed4?? 6.Bd4?? Bb4 7.c3 Ba5 8.a4 Ne7 9.e4 0-0 10.Qb3 Kh8 11.Nf3 c6 12.Bd3 d6 13.0-0 c5 14.Be3 Bg4 15.Nbd2 Ng6 16.Be2 Ne5 17.h3 Bh5 18.Nc4 Bf7 19.Nfe5 fe5 20.Qc2 Bc7 21.ba6 Na6 22.a5 Qh4 23.Bf3?? Be6?? 24.Nd2 Bh3?? 25.gh3+– Qh3 26.Bg2 Qg4 27.f3 Qg3 28.Bf2 Qg5 29.Rfe1 Bd8 30.Nf1 Rf6 31.Qc1 Qh5 32.Ng3 Qh6 33.Nf5 Qg6 34.Nh4 Qh5 35.Nf5 Nc7 36.Be3 Ne6 37.Kf2 g6? 38.Rh1+– Qh1 39.Qh1 Nf4 40.Bf4 ef4 41.Nh6 Kg7 42.Ng4 Rf7 43.Qh6 Kg8 44.Rh1 Be7 45.Qh3 Raf8 46.Nh6 Kg7 47.Nf7 Kf7 48.Qh7 Ke6 49.Qg6 Kd7 50.Bh3 Kc7 51.Qe6 Rd8 52.a6 ba6 53.Rb1 Bf8 54.Qd5 Rd7 55.Rb7 Kd8 56.Qg5 Be7 57.Rb8 Kc7+– (57...Kc7 58.Qf5 Rd8 59.Rd8 Bh4 60.Ke2 Bd8 61.Qd7 Kb6 62.Qd8 Kc6 63.Bd7 Kb7 64.Qc8 Kb6 65.Qb8 Ka5 66.Qd8). iczker – jacekp1313, internet, 2011.

5.Nf3 d5 6.d4 ed4 7.Nd4 ab5 8.Bb5+= Bd7? 9.a4 Ne7?? 10.0-0?? c6 11.Bd3+= Bd6 12.c4 Qc7 13.Nc3 Bh2=+ 14.Kh1 Bd6 15.Qf3 Na6 16.Nf5? Nf5–/+ 17.Bf5 Bf5 18.Qf5 dc4 19.Rfd1 Qe7 20.Ne4 Bc7 21.Ba3 c5 22.Nc5= Bd6 23.Rd5?? 0-0 24.Rad1? Bc5 25.Rd7? Qe8?? 26.Bc5= Nc5 27.Qc5 Rc8 28.Qd5 Kh8 29.Qb7 Rg8 30.Re7?? Qh5–+ (30...Qh5 31.Kg1 Qd1 32.Kh2 Qh5 33.Kg1 Rb8–+) 0–1. gtate (1945) – roadrunner (1935), net–chess.com, 2005.

5.Bc4 Bb7 6.Ne2 d5 7.Bb3 Nh6 8.c4 d4 9.ed4 ed4 10.0-0 0-0 11.d3 Qd6 12.Nd2 Ng4= 13.Ng3 Ne3? 14.Qh5?? Nf1–/+ 15.Rf1 Qf4 16.Bc1 g6 17.Qh3 Qe5 18.Nde4 Nd7?? 19.Qd7+– Rf7 20.Qh3 Be4 21.Ne4 Re8 22.Bd2 Qf5 23.Qf5 gf5 24.Ng3 a5 25.Nf5 Kh8 26.Bd1 Re5 27.Bg4 h5 28.Bh3 Rf8 29.Ng3 Bd6 30.Bf4 Re7 31.Bh6 Rfe8 32.Ne4 Be5 33.f4 Bd6 34.Nf6 Ra8 35.Ne4 Rae8 36.Bf5 Rf7 37.Bg6 Ref8 38.Bf8 Rf8 39.f5 Be5 40.Bh5 Kh7 41.g4 Kh6 42.h4 (42.h4 Bd6 43.Nd6 cd6 44.Re1+–) 1–0. AbstractPoetic – rexxx, internet, 2007.

5.d4 ed4 6.ed4 Qe7 7.Qe2=.

5.Nf3 Bb7 6.Bc4 d5 7.Be2=.

5.Nf3 Bb7 6.Nh4 Ne7 7.Bc4 d5 8.Be2 0-0 9.0-0 Qd6 10.d4+= ed4 11.Bd4 Bd4 12.Qd4 c5 13.bc6 Nbc6 14.Qd1 Rae8 15.Nc3?? Ne5?? 16.Nf3 Qb4 17.Qd2? Rd8?? 18.Rab1+= Qg4?? 19.Ne5+– Qf5 20.Nf3 d4 21.Nd4 Qg6 22.Bf3 Ba6?? 23.Rfe1 Nf5 24.Qc1 Nh4 25.Qd1 Rf7 26.Be4 f5 27.Bf3 Nf3 28.Qf3 Bb7 29.Qg3 f4 30.Qg6 hg6 31.Ndb5 fe3 32.Re3 Rd2 33.Re2 Rdd7 34.Rd1 Rde7 35.Rde1 Rd7 36.Rd1 Rd1?? 37.Nd1+– Rd7 38.Ne3 a6 39.Nc3 Bc6 0–1. j1a9n55 – jmaze, internet, 2011.

5.Nf3 Bd6 6.Nc3 (6.Bc4 Bb7+=) 6...Bb7 7.Bc4 e4 (7...a6 8.a4+=) 8.Nd4+/– g6 9.d3 (9.0-0+/–) 9...Be5 (9...ed3!? 10.Qd3 Be5+/–) 10.de4+– (worse is 10.Ne4 d5 11.Ne6 Qe7 12.Be5 fe5+=) 10...Ne7 (10...a6 11.a4+–) 11.0-0 d5? (better is 11...a6+–) 12.ed5 Bd5 (12...a6+–) 13.Nd5 Nd5 14.Ne6 (14.Ne6 Qd7 15.Qd5+–) 1–0. marekt – tgerry, ChessWorld.net, 2018.

5.Qh5 Kf8 6.Qd1 (better is 6.Be5 Bb7 7.Bf4+/–) 6...Bb7 7.Nf3 d5 (7...a6 8.d4 ed4 9.Bd4 Bd4 10.Nd4= (worse is 10.ed4 Qe7 11.Qe2 Bf3 12.gf3 ab5+=)) 8.d4+= ed4 9.Nd4 Ne7?? (better is 9...Bd4 10.Bd4 c5 11.bc6 Nc6+=) 10.Ne6+– Kf7 11.Nd8 Rd8 12.Qh5 Kg8 13.Bd3 h6 14.Bf6! gf6 15.Qh6 Kf7 16.Qh5 Ke6 17.0-0 (17.Qg4!? Kf7+–) 17...Nd7 18.e4! Rh8 (18...de4 19.Bc4 Combination) 19.ed5 Bd5 (19...Nd5 20.Qf5 Ke7 21.Re1 Kd8 22.Be4+–) 20.Re1 (20.Qe2 Ne5 21.Nc3 c6+–) 20...Kd6 (20...Ne5 21.Qd1+–) 21.Qe2 (21.Qg4 Rag8 22.Qf4 Ne5+–) 21...Rae8 22.c4 (22.Qd2 Ne5 23.Nc3 c6+–) 22...Bb7 (22...Bd4 23.Nd2 Ba1 24.cd5 Nd5 25.Ne4 Ke7 26.Ra1 Kd8+–) 23.Qe6 1–0. DEFFM – GuestHWXF, freechess.org, 2016.

5.Qh5 g6 6.Qe2=.

5.a4 c6 6.c4 d5 7.cd5 cd5 8.Nf3 (8.d4 e4=) 8...Ne7 9.Be2 0-0 10.0-0 Be6 11.d3 (11.d4 e4 12.Nfd2 f5=) 11...Qd6 (11...Nd7 12.d4 e4 13.Nfd2=) 12.a5 Bc7 13.Ba3 Qd7 14.Qc2 (14.d4 e4 15.Nfd2 Rc8+=) 14...b6 (14...Rc8 15.Qb2=) 15.ab6 Bb6 16.Rc1 (16.d4 Rc8 17.Nc3 Ng6+=) 16...a6 (16...Rc8 17.Qd2=) 17.Qa4 Re8 (17...Rc8 18.Rc8 Nc8 19.d4=) 18.d4+= e4 19.Ne1 Nf5 (19...Ra7!?+=) 20.Bc5+/– Bc7? (better is 20...Bc5 21.dc5 Qc8+/–) 21.b6+– (21.ba6?! Qf7+/–) 21...Bd6 (21...Qa4 22.Ra4 Bb6 23.Bb6 Rc8 24.Rc8 Bc8+–) 22.b7 Qb7 (22...Qa4 23.Ra4 Nd7 24.ba8R Ra8+–) 23.Qe8 1–0. GuestNKQM – rbpl, freechess.org, 2017.

5.Bd3 c5 6.Qh5+- Kf8 7.Ne2 (7.Qf3 d6+-) 7...d5= 8.c3 (8.Ng3 Qe8+=) 8...e4 9.Bc2 Be6 (9...f5 10.f3=) 10.Nf4 (10.c4 Bc7+=) 10...Bf7 11.Qe2 (11.Qf5 Ne7 12.Ne6 Be6 13.Qe6 Qd7 14.Qd7 Nd7+=) 11...Ne7 (11...Qe8 12.a4+=) 12.0-0 (12.f3 ef3 13.Qf3+=) 12...g6 (12...Bc7!?+=) 13.f3 (13.c4 Kg7 14.Qg4+-) 13...f5 (better 13...ef3!? 14.Qf3 Qd6+-) 14.fe4+- de4 15.Bb3 (better 15.c4 Kg8 16.d3 ed3 17.Bd3+- (worse 17.Qd3 Qd3 18.Bd3 a6+-)) 15...Bb3+= 16.ab3 Qd6 (16...Kf7 17.d3 ed3 18.Nd3+=) 17.d3 (17.c4 Rg8+-) 17...ed3+= 18.Nd3 Bc7 Threatening mate: Qxh2 19.Nf4 g5 20.Rd1 Qh6 21.Nh3 Ke8 22.Na3 Nd7 23.Nc4 Ne5 (23...Rg8 24.Qd2 Nb6 25.e4=) 24.Ne5+- Be5 25.Qd3 Kf7 (25...b6 26.e4 g4 27.Qd7 Kf7 28.Bc1+-) 26.Qc4 Kg6?? (better 26...Ke8+-) 27.Qe6+- (27.Qc5?! Qg7 28.Rd7 Rhe8+-) 27...Bf6 28.c4 (better 28.Qf6! Kf6 29.Rd6 Kf7 30.Rh6 g4 31.Ng5 Kg7+-) 28...Qg7 29.Rd7 (29.Rd6 Rhf8 30.e4 Qf7 31.Bf6 Qe6 32.Re6 Rf6 33.Re7 fe4+-) 29...Rhe8? (29...Qf7 30.Qd6 Rhf8 31.Qg3+- (31.Rb7?! Nc8 32.Qc6 Qe8 33.Qe8 Re8 34.Bf6 Kf6+-)) 30.Rf1 (better 30.g4!? Qf7 31.gf5 Kg7 32.Ng5 Qe6 33.Ne6 Kf7 34.Bf6 Kf6+-) 30...Qf7 31.Re7?? (31.Qd6 Qf8 32.e4+- (32.Rb7?! Rad8 33.Qg3 h6 34.Nf4 Kf7+-)) 31...Qe6-+ 32.Re6 (32.Re6 Re6 33.Bf6 Rf6 34.Rf3-+) 1-0. aravind555 (1630) - clevereduardo (1690), lichess.org, 2019.

5.Nf3 c5 6.bc6 Nc6 7.Bb5 a6 8.Ba4 Nge7 9.0-0 0-0 10.d4 e4 11.Nfd2 d5 12.Nc3 g5 13.Bb3+= Be6 14.a4 Nb4? 15.Ba3 Nec6 16.Bb4 Nb4 17.Nce4 Qc8 18.Ng3 Qc3 19.Ne2 Qc7 20.c3 Nc6 21.e4 Ne7 22.Rc1 f5 23.ef5 Nf5 24.Nf3 Qg7 25.Rb1 Rac8 26.Bc2 Bd8 27.Rb6?? Bb6–+ 0–1. gtate (1980) – petrpolacek, net–chess.com, 2004.

5.a4 Qa5 6.Bc3 Bb4 (6...Qb6 7.d4 ed4 8.ed4+=) 7.Qg4+= g6?? (better is 7...Bc3 8.Nc3 g6+=) 8.Bb4+– Qc7 9.Nc3 d5 10.Qf3 a5 11.Ba3 Be6 12.bc6 bc6 13.Be2 (13.Rb1 Nd7+–) 13...Na6 (13...e4 14.Qf4 Qf4 15.ef4+–) 14.Rb1 f5 (14...e4 15.Qf4+–) 15.Nh3 e4 (15...Nf6 16.0-0+–) 16.Qf4 Qf4 17.Nf4 Bd7 (17...Nc7 18.Bd6 g5 19.Be5 gf4 20.Bh8 fe3 21.fe3+–) 18.Bb2 (better is 18.Rb6 Nc7+–) 18...Ne7 (18...g5 19.Nh5 Nb4 20.Ne4 fe4 21.Bh8+–) 19.Ne4! 0-0 (19...de4 20.Bh8) 20.Nf6 Rf6 21.Bf6 Kf7 22.Be5 (22.Bd4 c5 23.Ba6 cd4+–) 22...Nc5 23.Ra1 Ra7 (23...g5 24.Bh5 Kf8+–) 24.Bd4 1–0. Waibel,Ulrich – Opara,Carl, compuserve, 1996.

5.a4 Qa5 6.Bc4 d5= 7.Bc3 Bb4 (7...Qc7 8.Be2=+) 8.Bb4 Qb4 9.Be2 Bd7 10.Bh5 g6 11.Be2 Qa5 12.Nc3 a6 13.Nf3 (13.Rb1 d4 14.ed4 ed4+=) 13...Qc7 (better 13...ab5!? 14.0-0 b4-/+ (worse 14...ba4 15.Ra4 Qa4 16.Na4 Ra4 17.c4+-)) 14.0-0 ab5 (14...Ne7 15.Qb1=) 15.ab5 Ra1 16.Qa1 Ne7 17.Qa2 0-0 18.Ne4 (18.Ra1 Bg4+=) 18...Be6 19.Nc5 Bd7 (19...Bg4 20.Rb1=) 20.Nd7 Nd7 21.c4 Kg7 (better 21...e4 22.Nd4 Qd6+=) 22.e4?? (22.d4!?+=) 22...d4 (better 22...de4!? 23.Ne1 cb5 24.cb5 Rd8-/+) 23.d3 c5 24.Nd2 b6 (24...Nb6=) 25.f4 (25.Ra1 Kh8+=) 25...Nc8 (25...ef4!? 26.Ra1 Ne5=+) 26.Bg4= Nd6 (26...f5 27.ef5 gf5 28.Bf3=) 27.fe5 (better 27.Bd7 Qd7 28.fe5 fe5 29.Rf8 Kf8 30.Qa8 Kg7 31.Qb8+-) 27...Ne5=+ (worse 27...fe5 28.Nf3+=) 28.Be6 (28.Be2!?=+) 28...Nd3-/+ 29.Nf3? (29.Qa3 Ne5-/+) 29...Qe7 (29...Nb4!? 30.Qb3 Ne4 31.Bh3-+) 30.Bd5 Ne4?? (better 30...Nb4 31.Qa4 Nd5 32.ed5 Qe3 33.Kh1 Qc3 34.Qa7 Rf7 35.Qb6 Qc4-+) 31.Qe2+= Nf4 32.Qe4 Qe4 33.Be4 Re8 (33...Rd8 34.Ra1+-) 34.Bd5 (better 34.Bc6 Ne2 35.Kf2+-) 34...Re2? (34...Nd5 35.cd5 Rd8+=) 35.Ne1?? (better 35.Nd4 Nh3 36.gh3 cd4 37.Rd1+-) 35...d3 (35...Nd5 36.cd5 Re5+=) 36.Rf4?? (better 36.Bf3 Ra2 37.Bd1=) 36...Re1 (better 36...d2 37.Rf1 d1Q-+ (37...de1B?! 38.Rf3=+; 37...de1R?! 38.Re1 Re1 39.Kf2-+; 37...Re1 38.Bf3+-; 37...de1N?! 38.Rf2 Rf2 39.Kf2 Nd3 40.Ke3-/+; 37...de1Q?! 38.Re1 Re1 39.Kf2-+)) 37.Kf2?? (better 37.Rf1 d2 38.Bf3+-) 37...d2-/+ 38.Bf3 d1Q 39.Bd1 Rd1 40.Kg3 Rc1 41.Rf2? (41.Rf2 Rc4 42.Re2-+; better 41.Re4-/+) 1-0. aravind555 (1695) - LUADRI79, lichess.org, 2019.

5.a4 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6 5.a4 Bc5).

5.c4 d5 6.Nf3 Bg4 7.Be2 (7.d4 ed4 8.ed4 Qe7 9.Qe2 Bf3 10.gf3 Bb4 11.Bc3 Bd6=) 7...Nd7 (7...dc4 8.Bc4 e4 9.Qc2=) 8.Nc3 Ne7 9.a3 (9.d4 ed4 10.ed4 Bb4=) 9...dc4+= 10.Bc4 Nb6 11.Be2 Ned5 12.Ne4 Be7 13.d4 (13.bc6 bc6 14.d4 Bf3 15.Bf3 Nc4=) 13...ed4 14.Nd4 Be2 15.Qe2 Na4 (15...Rc8 16.Ne6 Qd7 17.Ng7 Kf7 18.bc6 Rc6 19.Nh5+/–) 16.Ne6 (16.bc6 Qa5 17.Kf1 Nb2 18.cb7+– (18.Qb2 bc6 19.Qb7 0-0+=)) 16...Qa5= 17.Kf1 Kf7 18.Nd4 Nb2 19.Qb2 Rhc8 20.g3 (20.bc6 bc6 21.Kg1 Kg8=) 20...Kf8 (20...a6 21.bc6 bc6 22.Kg2=) 21.Kg2 cb5 22.Qb5 Qb5 23.Nb5 Rc2 24.Kf3 g5 (24...f5!? 25.Ned6 Bf6=) 25.Rhd1+= Nb6 (25...Nc7 26.Nd4 Rc4 27.Rac1+=) 26.Nd4 Rb2 27.Rd2 (27.h4 gh4 28.gh4 Rc8+=) 27...Rd2= 28.Nd2 Rc8 29.Ne4 Nc4 30.a4 (30.Rb1 A) worse is 30...Ba3 31.Rb7 Bb2 32.Ra7+– (worse is 32.Nf6 Bd4 33.Nh7 Ke8 34.ed4 Nd2 35.Kg4 Ne4+–); B) 30...b6 31.a4 Ne5 32.Ke2 g4=) 30...Kf7 (30...Ne5 31.Ke2+=) 31.Nf5 (31.Rd1 Ne5 32.Ke2 g4=) 31...Rc7 (31...Ne5 32.Kg2 Rd8 33.Rb1=) 32.Ne7 (32.g4 Ne5 33.Kg3 Nd3+=) 32...Ke7 33.g4 Ne5 34.Kg3 Rc4 35.f3 Rb4 (35...b6 36.Ra2+=) 36.Nc3 Rb3 37.Nd5 (37.Rc1 Ke6=) 37...Ke6 38.Nc7 (38.Rd1 Rd3 39.Rd3 Nd3 40.Nc7 Kd6 41.Nb5 Kc5 42.Na7 Nb2=) 38...Kf7 39.Nd5? (better is 39.Re1!?=) 39...Rd3–/+ 40.f4 (40.e4 Rf3 41.Kg2 Rb3–/+) 40...Rd5 (40...Nc6!? 41.Nc7 Re3 42.Kf2 gf4 43.Rd1–+) 41.fe5–/+ Re5 42.Kf3 Ra5 43.Rc1 Ra4 The passed pawn on a7 quickly leads to threats 44.Rc7 Kg6 45.Rb7 a5 46.Ra7 Ra2 47.Ra6 a4 48.Ke4 a3 49.Kd5 (49.Ra8 h5 50.h3 h4–+) 49...Ra1 (49...Rd2 50.Kc4 a2 51.Kb3 Rh2 52.e4–+) 50.e4 a2 51.Ke6 Re1 52.Ra2 Re4 (52...Re4 53.Kd5 Rg4–+) 0–1. Dopper,Johan – Krijger,Martin, 1991.

5.Bc4 d5 6.Bb3 Qa5 (6...Ne7 7.d4 ed4 8.Bd4 Qa5 9.Nd2 Bd4 10.ed4=+) 7.Qh5 (better is 7.bc6 bc6 8.c4=) 7...Kd7?? (better is 7...g6 8.Qe2 Ne7=+) 8.Nf3 (better is 8.Qg4 Kc7 9.Qg7 Ne7 10.Qh8 Qb5 11.Qf6 Nd7 12.Be5 Ne5 13.Qe5 Bd6+–) 8...g6?? (8...Nh6+/–) 9.Qg4 (better is 9.Ne5 fe5 10.Qe5+–) 9...Kc7= 10.0-0?? (10.Qh4 Qb5 11.Ne5+=) 10...Bg4–+ 11.Nc3 (11.Ne5 Be6 12.bc6 Nc6 13.Nc6 bc6–+) 11...Bf3 12.gf3 cb5 13.a4 b4 14.Nd5 Kd6 15.e4 Ne7 16.c3 Nd5 17.Bd5 Qc7 18.cb4 Bb4 19.Rfc1 Nc6 20.Ba3 Ba3 21.Ra3 Rac8 22.Rac3 Ne7 23.Rc7 Rc7 24.Rc7 Kc7 25.Bc4 b6 26.d3 Rd8 27.Kf1 a5 28.Ke2 Nc6 29.Ke3 Nd4 30.f4 Kd6 31.fe5 fe5 32.f4 Nc2 33.Kf3 ef4 34.Kf4 Kc5 35.e5 Nd4 36.Ke4 Re8 37.h4 h6 38.Kf4 g5! 39.hg5 hg5 40.Kg5 Re5 41.Kf4 Re1 42.Bb5 Nb5 0–1. eds – sharky7, Live Game Caissa's Web, 2004.

5.d4 Bb4 6.c3 Ba5 (6...Bd6 7.Bd3+=) 7.de5+/– fe5 (7...Qe7!?+/–) 8.Qh5+– Kf8 9.Ba3 d6 10.Bc4 Nf6?? (better is 10...Nh6 11.Qe5 c5+/–) 11.Qf7 1–0. DEFFM – jprada, freechess.org, 2017.

5.d4 ed4?? 6.Bd4 (6.Qh5 g6 7.Qc5 de3 8.Qe3 Kf7+–) 6...Qe7?? (better is 6...Bd4 7.Qd4 d5=) 7.Qh5+– g6 8.Qc5 (8.Bc5?! gh5 9.Be7 Ne7+/–) 8...d6 9.Qa3 c5 10.Bb2 Bd7 11.Nc3 b6 (11...Be6 12.Rd1 Nd7 13.Nge2+–) 12.Nd5 Qd8 13.c4 Be6 14.Qd3 Nd7 (14...Bf5 15.e4 Be6 16.Nf3+–) 15.Qe4 Kf7 16.Nf4 (16.Nc7 Qc7 17.Qa8 Ne5+–) 16...Bf5 17.Qd5 Ke8 18.f3 (18.Qd6 Qb8 19.Qb8 Rb8+–) 18...Ne7 19.Qd6 Qb8 (19...Nc8 20.Qd2 g5 21.Nh5+–) 20.Qd2 (20.Qb8!? Rb8 21.e4 g5+–) 20...g5 21.Nh5 Kf7 22.g4 (22.e4 Be6+–) 22...Be6 (22...Bg6 23.h4 Bh5 24.gh5 (24.Qd7?! Rd8 25.0-0-0 Rd7 26.Rd7 Ke8+/–) 24...Qg3 25.Qf2 gh4 26.Rh4 Qf2 27.Kf2+–) 23.Bg2 (23.h4 Ne5+–) 23...Qc7 (23...Ne5 24.Qc3 Rd8 25.Nf6 Nd3 26.Kf1 Nb2 27.Qb2 Bc4 28.Ke1+–) 24.Rc1 (better is 24.Qc3!? Qe5 25.Qb3 Qd6+–) 24...Rad8 25.Qc3 Ne5 26.f4 (26.Bf1!? N7g6+–) 26...Rd3 27.fe5 Rc3 28.Rc3 Bg4 (28...fe5 29.h3 h6 30.Be4+–) 29.Nf6 Be6 30.Nf3 Kg6 31.0-0 g4 32.Nh4 (32.Nd2 Rd8 33.Rc2 Rf8+–) 32...Kh6 (32...Kg5 33.Ne4 Kh4 34.Rf6+–) 33.Rd3 Qc8 34.Rd6 (34.Rd6 Kg5 35.Ne4 Kh4 36.Rf6+–) 1–0. Baer,Cy (1895) – Decking,Lutz (2195), RSS5E easy–29, 2007.

5.Qh5 g6 6.Qh4 Ne7?? 7.Qf6+– Rf8 8.Qe5 d6 9.Qg7 Bf5 10.d3 Nd7 11.Nf3 Qa5 12.Bc3 Qb5? 13.d4 Qa4 14.dc5 Nc5 15.Nd4 Bc2 16.Nc2 Qc2 17.Qd4?? 0-0-0 18.Bc4?? Nf5?? 19.Qd2+– Qe4 20.Bf1 d5? 21.f3?? Qh4 22.Qf2 Qa4 23.Be2 Rfe8 24.0-0 Ne3 25.Bf6 Rd6= 26.Nc3 Qf4 27.Bh4 Nf1 28.Kf1 Qd2?? 29.Qe1?? Qh6 30.Rb1 Rde6 31.Qf2? b6 32.Bg3 Qg5 33.a4 Qf5 34.a5 (34.a5 Re2! 35.Qd4–+). elsh1403 – ishbarimeod (1685), internet, 2011.

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 0-0 9.Nf3 (9.d4 ed4 10.Bd4 Bd4 11.Qd4 b6=) 9...Kh8 (9...d6 10.d4 ed4 11.Bd4=) 10.Nc3 (10.d4 ed4 11.Bd4 Bd4 12.Nd4 d5+=) 10...c6 (10...d5 11.d4 ed4 12.Nd4=) 11.Be2 (11.d4 ed4 12.Nd4 d5+=) 11...d5 (11...cb5 12.cb5 d5 13.0-0=) 12.cd5 (12.d4 ed4 13.Nd4 dc4 14.Bc4 Bd4 15.Qd4 Qd4 16.ed4 Rd8=) 12...cd5 13.0-0 Bd7 (13...e4 14.Ne1=) 14.d3 (14.d4!? ed4 15.Nd4+/–) 14...Qa5 (14...Bd6 15.Qb3=) 15.Qb3 (15.d4 Bb4 16Qb3 e4=) 15...Bb4 (15...Qa3 16.Qa3 Ba3 17.d4=) 16.Nd5 (16.Rb1 Bd6+=) 16...Nd5= 17.Qd5 Bb5 (17...Qb5 18.Qa2 Qa5 19.Qb1=) 18.Bb2 (18.Qb7?? Bc6 19.Qb4 Qb4–+) 18...Bc6 (18...Rd8 19.Qe4= (worse is 19.Qb7 Bc6 20.Qf7 Bd5–/+)) 19.Qe6 (19.Qa5 Ba5 20.Ra1 b6=) 19...Nd7 (19...Qd5 20.Qd5 Bd5 21.Rc1=) 20.Ra1 Qd5 21.Qg4 (better is 21.Qd5!? Bd5 22.Ra4=) 21...Qb3–/+ 22.Bc1 Nb6 23.Nd2 Bd2 (23...Qc3 24.Rb1 Nd5 25.Bf3+=) 24.Bd2 Nd5 (24...Qb2 25.Rd1=) 25.Qc4 (25.d4 Qb2 26.Rd1 f5–/+) 25...Qb2= 26.Qc1 (26.Qa2 Qa2 27.Ra2 g5=) 26...Qc1 27.Rc1 g5 (27...Ra8 28.e4 Nc7 29.Be3=) 28.g3 (28.Kf1 Ra8=) 28...Kg7 (28...Ra8 29.e4 Ra2 30.Bf3=) 29.e4 Nc7 30.Bg4 (30.f4 gf4 31.gf4 Ne6=) 30...Nb5 31.Kf1 (31.Be3 Rd8 32.Be2 Nd4+=) 31...Rd8+= 32.Ke2 (32.Be2 Nd4 33.Be3 Ne2 34.Ke2 g4+=) 32...Nd4 33.Ke3 Nb3 (33...Kg6 34.Ba5 Ra8 35.Bc7+=) 34.Rc4= Nd2 (34...Bb5 35.Rc3 Nd4 36.f4=) 35.Kd2 h6 36.Ke3 Kf7 37.Rc3 (37.d4 ed4 38.Rd4 Ke7=) 37...Ra8 38.Bd1 (38.Bf5 Ra2=) 38...Ke7 39.Bg4 (39.h3 Ra1 40.Bg4 Kd6+=) 39...Kd6+= 40.Bd1 (40.Bf5 Ra4+=) 40...Ra1 41.Bg4 Rh1 (41...Re1 42.Kd2 Rf1 43.Ke3+=) 42.h3 Re1 (42...b5 43.Rb3+=) 43.Kd2 Rf1 (43...Ra1 44.Bf5+=) 44.Ke2 (44.Ke3 b5+=) 44...Ra1 45.Bf5 (45.Ke3 b5+=) 45...b5 46.Rb3 Kc5 (46...Ra4 47.Ke3+=) 47.Ke3 (47.Rc3 Kb6+=) 47...b4–/+ 48.Be6 Ba4 49.Rb2 Ra3 50.Bc4 (50.Kd2 h5–/+) 50...Bd7 0–1. DEFFM – GuestFerdz, freechess.org, 2016.

5.c4 c6 6.Nf3 d5 7.Be2 a6 8.bc6 bc6 9.d4 Bb4 10.Bc3+= Bc3 11.Nc3 ed4 12.Nd4+/– 0-0 13.0-0 Bb7? 14.cd5 Nd5 15.Ne4 Re8 16.Bf3 c5?? 17.Nc5+– Bc8 18.Qb3 Re5 19.e4 Nd7 20.Nd7 Qd7 21.ed5 Bb7 22.d6 Kf8 23.Bb7 Rb8 24.Bc6 Qd6 25.Qc3 Rc5 26.Ne6! (26.Ne6 Qe6 27.Qc5 Qe7 28.Qa5+–) 1–0. valpa – Tofik, playchess.de, 2002.

5.c4 Ng6 6.Bd3 c6 (6...d5 7.Qh5 0-0 8.cd5=) 7.a4 (7.Qh5 0-0+=) 7...a6 (7...d5 8.Qh5 Kf7 9.cd5 cd5 10.f4 ef4 11.ef4 Re8 12.Kd1=) 8.Qh5+= Kf7. GuestGBMR – GuestXYKJ, freechess.org, 2017.

5.Bc4 a6 6.a4 (6.ba6 Na6 7.d4 ed4 8.ed4 Bb6=) 6...d6 (6...d5 7.Be2+=) 7.Nf3 Nd7 8.d4 Bb4 (8...d5 9.Bd5 Nd5 10.dc5 Nc5 11.0-0+=) 9.Nbd2 (9.c3!? Nb6 10.Bd3+=) 9...e4 10.Nh4 Nb6 (better is 10...Bd2 11.Kd2 Nb6+=) 11.Qh5?? (11.c3 Nc4 12.Nc4 d5 13.cb4 dc4 14.ba6 Ra6=) 11...Kd7?? (better is 11...g6 12.Qe2 Nc4 13.Qc4 Bd2 14.Kd2 d5–+) 12.Bb3 (12.c3 Nc4 13.Nc4 g6+=) 12...d5 (12...g6 13.Qh6 ab5 14.ab5 Ra1 15.Ba1+=) 13.c3 (13.Qg4 f5 14.Qg7 ab5 15.ab5 Ra1 16.Ba1+=) 13...Ba5 (13...g6 14.Qg4 f5 15.Qg5=) 14.0-0?? (better is 14.Qg4 f5 15.Nf5+–) 14...g6 15.Qh6 c6 (15...Qf8 16.Qf8 Rf8 17.f4=) 16.f3 cb5 (16...ab5 17.ab5 (17.fe4?! ba4 18.Ba4 Na4 19.Ra4 Qf8=) 17...g5 A) 18.Qf6?! gh4 19.fe4 A1) worse is 19...cb5 20.ed5 (20.Qh4 Na4 21.Ba3 Bc3 22.Qg4 Kc7 23.Qf4 Kb6 24.Ba4 Ba1 25.Qf6 Be6 26.Bc5 Ka5+–) 20...Nbd5 21.Qf7+– (21.Qh4 h5+–); A2) 19...h3=; B) 18.fe4 gh4 19.ed5 (19.Rf6?! Qg8+–) 19...Nbd5 20.Nc4+/–) 17.fe4 (17.ab5 ab5 18.fe4 Qf8+/–) 17...ba4 (17...Na4 18.Ba4 ba4 19.Rf6 Nf5 20.Rf7 Ke8 21.Nf5 Bb4 22.cb4 gf5+–) 18.Ra4?? (better is 18.Rf6 Nf5 19.Rf7 Ne7 20.Ba3+– (20.Rh7?! Rh7 21.Qh7 g5+–; 20.Ba4?! Na4 21.Ra4 Bc7+–)) 18...Na4–/+ 19.Ba4 Kc7 (better is 19...b5 20.Bb3 Qf8 21.Qf8 Rf8 22.Bd5 Nd5 23.ed5 Bb7–/+) 20.Rf6 b5 21.Qf4 Kb7 22.Bb3 Rg8 (22...Bc7!? 23.Qf2 g5+=) 23.ed5 (23.Ba3 b4 24.cb4 Bc7+–) 23...g5 24.Qf3 gh4? (better is 24...Rg7 25.d6 Nc6+/–) 25.d6+– Nc6 26.Rf7 (26.Bg8 Qg8 27.Rf7 Kb8+–) 26...Kb8 (26...Kb6 27.Ba3 Bc3 28.Bc5 Ka5 29.Qc6 Bd2+–) 27.Qc6 Bb7 (27...Rg5+–) 28.Qb7 1–0. GuestRBHB – GuestDHSK, freechess.org, 2017.

5.Bc4 c6 6.Qh5 (6.d4 d5 7.Bd3 Bb4 8.c3 Bd6=+) 6...g6=+ 7.Qh6? (better 7.Qf3 d5 8.Bb3=+ (worse 8.Qf6 Rf8 9.Qe5 Bd6-/+)) 7...Nf5-+ 8.Qh4?? (better 8.Qh3 d5 9.Bb3 Ne3 10.Qg3-+) 8…Nh4 (8...Nh4 9.Bf1 d5-+) 0-1. aravind555 - naserpour1332, lichess.org, 2018.

5.Bc4 d5 6.Bb3 Be6 7.Qh5 g6 8.Qh6 Nf5–/+ 9.Qh4?? Nh4–+ 0–1. j1a9n55 – pedro1a (1635), internet, 2011.

5.Bc4 d5 6.Be2+=.

5.Bd3 d5 6.Qh5 Kf8 (6...g6 7.Qd1=+) 7.e4 (7.Bh7? Bf5 8.Qf5 Nf5 9.Bf5 a6-+) 7...Be6 8.Nf3 (8.f4 ef4 9.Ne2 Bf7=) 8...d4 (8...Ng6 9.g3=+) 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 (12...Qe8 13.Qe8 Ke8 14.c3 dc3 15.dc3=+) 13.c3 (13.Bb2!?=) 13...Bf7 14.Qh3 Qa5?? (better 14...dc3 15.Nh4 c2 16.Bc2 Bc4-/+) 15.cd4+- ed4 16.Bd4 Bd4 17.Nd4 cb5 (17...Qd8 18.Qg3+-) 18.Bb5 g6 (18...Qd8 19.Qc3+-) 19.Nc3 Kg7 20.Ne6 Be6 21.Qe6 Qc7 22.Bc4 Rf8 23.f4 Nbc6 24.Nd5 (24.Nb5 Qd8+-) 24...Qd8? (better 24...Nd5!? 25.Bd5 Nd4+=) 25.Ne7 Qe7 26.Qe7 Ne7 27.d4 (27.Rb1 Rb8+-) 27...Rc8 (27...Rd8 28.d5+-) 28.Bb5 (better 28.Be6!? Rc6 29.d5+-) 28...f5+- 29.e5 Nd5 (29...Rd8 30.Rc1+-) 30.Re1 (30.g3 Rc2+-) 30...Rc2 (30...Rd8 31.Bc4 Nf4 32.d5+-) 31.e6 (31.g3 Nc3 32.Bf1 b5+-) 31...Kf6 32.Bd7 (better 32.Re5!? Ne7 33.g3+=) 32...Rd2 (32...Nf4? 33.e7 Ne2 34.Kf2 Ke7 35.Bb5+-) 33.g3 Rd4 34.Rb1 b6 35.Kf2 Rd2 36.Kg1 Ke7 37.Rb5 Rd1 (37...h6 38.Bc6 Nc7 39.Rb6 Ne6 40.Rb7 Kf6 41.Rd7=) 38.Kg2 Rd2 39.Kh3 (39.Kg1 h6=) 39...h5 (39...Nf6 40.Bc6 Ng4 41.Bg2-+) 40.Kh4? (40.Bc6 Nc7 41.Rb6 Ne6= (41...Ke6? 42.Be8 Ke7 43.Bg6+-)) 40...Rh2 (better 40...Kf6 41.h3 Ne3-/+) 41.Kg5+= Rg2 42.Kg6 (42.Rd5 Rg3 43.Kh6 h4+=) 42...Rg3 (better 42...Ne3 43.g4 Rg4 44.Kh5 Rg7 45.Rb6 Nd5=) 43.Kh5?? (better 43.Kf5 Ne3 44.Ke4+-) 43...Nf4-+ 44.Kh4?? (44.Kh6 Ne6 45.Be6 Ke6 46.Rb6 Ke5 47.Rb5 Ke4 48.Rb4 Kf3 49.Kh5-+) 44...Rg1 (44...Rg4) 45.Rf5= Ne6 46.Be6 Ke6 Threatening mate... how? 47.Rf2?? (better 47.Rb5=) 47...Rg8 (47...Kd6 48.Rd2 Kc5 49.Rc2 Kd4 50.Rb2-+) 48.Rc2 (48.Rb2 Rb8-+) 48...b5 49.Rb2 Rb8 50.Kg4 Kd5 51.Kf4 (51.Kf3 Kc4-+) 51...Kd4 52.Rb4 Kc3 53.Re4 b4 54.Ke3 (54.Re3 Kd2 55.Rb3-+) 54...b3 55.Ke2 (55.Rh4-+) 55...b2 56.Re3 Kc2 (56...Kc2 57.Kf2 b1Q 58.Re2 Kc3 59.Re5 Rf8 60.Kg2 Qg6 61.Rg5 Qg5 62.Kh3 Rh8) 0-1. aravind555 (1775) - BwetterSchach (1715), lichess.org, 2020.

5.d4 Bb4 6.c3 Bd6 7.Nf3 ed4 8.cd4+=.

5.d4 ed4 6.ed4 Bb6 7.c4 a6 8.c5 Ba7 9.a4 0-0 10.Nc3 b6 11.Bc4 Kh8 12.Ne4 Bb7 13.f3 bc5 14.Nc5 Bc5 15.dc5 ab5 16.ab5 Ra1 17.Qa1 d5 18.cd6 cd6 19.Ne2 Qb6 20.Bd4 Qc7 21.Bd3 Nd7 22.0-0 Ne5 23.Be5 de5 24.Ng3 Rb8 25.Rc1 Qb6 26.Kf1 Nd5–/+ 27.Qb1? Nf4?? 28.Bh7? Qb5?? 29.Qb5+– Kh7 30.Qb1 Kh8 31.Kf2 Rd8 32.Qb7 Kh7 33.Nf5 Rd2 34.Ke1 Re2 35.Kd1 Kg6 36.Qg7 Kf5 37.g4 Ke6 38.Rc6 Kd5 39.Qd7 1–0. iczker – voin13, internet, 2011.

5.d4 ed4? 6.ed4?? Bd6 7.d5 (7.Bd3 a6+=) 7...0-0= 8.Nf3 c6 9.bc6 dc6 10.c4 (better is 10.dc6!? Nbc6 11.Bc4 Kh8 12.0-0=+) 10...cd5–/+ 11.cd5 Qa5 12.Bc3 Qd5 13.Qd5 Nd5 14.Bc4 Re8 (better is 14...Be6–+) 15.Be2?? (better is 15.Kd2!? Be6 16.Re1–/+) 15...Nc3 (better is 15...Nf4!? 16.Ng1 Ng2 17.Kd1–+) 16.Nc3 Bb4 17.0-0?? (better is 17.Rc1–+) 17...Bc3 18.Bc4 Be6 19.Be6 Re6 20.Rac1 Be5 21.Rc8 Kf7 22.g3 a5 23.Rd1 Raa6 24.Ne5–/+ Re5 25.Rb8 Rb6 26.Rd7 Re7 27.Re7 Ke7 28.Rg8 Kf7 29.Rb8 Rb2 30.Kg2 b5 31.a3 b4–+ 32.ab4 Rb4 33.Ra8 a4 34.h4 h6 35.h5–/+ g6 36.Ra7= Kg8 37.hg6 h5 38.Kh3 f5 39.f4 Kh8?? 40.g7?? Kg8 41.Kh4+/– a3 42.Ra3 Kg7 43.Kh5 Rb6 44.Ra7 Kf8? 45.g4 fg4 46.Kg4 Rf6 47.Kg5 Rb6 48.f5 Ke8 49.f6 Rb1 50.f7 Kf8= 51.Kf6 Rf1 52.Ke6 Re1 53.Kd6 Rf1 54.Ke6 Re1 55.Kd6 Re4 56.Kd5 Re2 (57.Rc7 Re7=). MasterofDisaster – Schnick, Live Game Caissa's Web, 2004.

5.d4 ed4?? 6.Bd4 Qe7?? (better is 6...Bd4 7.Qd4 d5=) 7.Qh5+– g6 8.Qc5 (8.Bc5?! gh5 9.Be7 Ne7+/–) 8...d6 9.Qa3 c5 10.Bb2 Bd7 11.Nc3 b6 (11...Be6 12.Rd1 Nd7 13.Nge2+–) 12.Nd5 Qd8 13.c4 Be6 14.Qd3 Nd7 (14...Bf5 15.e4 Be6 16.Nf3+–) 15.Qe4 Kf7 16.Nf4 (16.Nc7 Qc7 17.Qa8 Ne5+–) 16...Bf5 17.Qd5 Ke8 18.f3 (18.Qd6 Qb8 19.Qb8 Rb8+–) 18...Ne7 19.Qd6 Qb8 (19...Nc8 20.Qd2 g5 21.Nh5+–) 20.Qd2 (20.Qb8!? Rb8 21.e4 g5+–) 20...g5 21.Nh5 Kf7 22.g4 (22.e4 Be6+–) 22...Be6 (22...Bg6 23.h4 Bh5 24.gh5 (24.Qd7?! Rd8 25.0-0-0 Rd7 26.Rd7 Ke8+/–) 24...Qg3 25.Qf2 gh4 26.Rh4 Qf2 27.Kf2+–) 23.Bg2 (23.h4 Ne5+–) 23...Qc7 (23...Ne5 24.Qc3 Rd8 25.Nf6 Nd3 26.Kf1 Nb2 27.Qb2 Bc4 28.Ke1+–) 24.Rc1 (better is 24.Qc3!? Qe5 25.Qb3 Qd6+–) 24...Rad8 25.Qc3 Ne5 26.f4 (26.Bf1!? N7g6+–) 26...Rd3 27.fe5 Rc3 28.Rc3 Bg4 (28...fe5 29.h3 h6 30.Be4+–) 29.Nf6 Be6 30.Nf3 Kg6 31.0-0 g4 32.Nh4 (32.Nd2 Rd8 33.Rc2 Rf8+–) 32...Kh6 (32...Kg5 33.Ne4 Kh4 34.Rf6+–) 33.Rd3 Qc8 34.Rd6 (34.Rd6 Kg5 35.Ne4 Kh4 36.Rf6+–) 1–0. Baer,Cy (1895) – Decking,Lutz (2195), RSS5E easy–29, 2007.

5.d4 ed4 6.Qh5 g6 7.Qc5 de3 8.Nc3 ef2 (8...d5 9.0-0-0 (9.Qe3?! d4 10.Qf3 dc3 11.Bc3 Nd7+/–) 9...ef2 10.Nd5 Nd5 11.Rd5+– (11.Qd5?! Qd5 12.Rd5 fg1B 13.Rg1 Be6=)) 9.Qf2 0-0 (9...Rf8+–) 10.Ne4 Nf5 11.0-0-0 (11.g4 d5 12.0-0-0 Qe7 13.Nf6 Rf6 14.Bf6 Qf6 15.gf5 c6+–) 11...d5 (11...h5 12.h3 h4 13.Nf3+–) 12.g4 Bd7 (12...Qe7 13.Nf6 Rf6 14.Bf6 Qf6 15.gf5 c6+–) 13.Rd5 (worse is 13.gf5 de4 14.fg6 hg6+–) 13...c6 (13...Qe7 14.Bc4 Kg7 15.Nf6 Rf6 16.g5+–) 14.Rd1 (14.gf5?! cd5 15.Nd6 Bf5 16.Nf5 gf5+–) 14...Nh6 (14...Qe7 15.Qe1 Kg7 16.gf5 Bf5 17.Nf6 Qe1 18.Re1+–) 15.Nf6 Rf6 16.Bf6 Ng4 (16...Qf8 17.Bc4 Nf7 18.bc6 bc6+–) 17.Bc4 1–0. pcmvr – rbeckett, net–chess.com, 2017.

5.d4 ed4? 6.Qh5 Ng6 7.Qc5 de3 8.Qe3 Kf7 9.Qg3+–.

5.Be2 c6 6.a4 (6.d4 Bb4 7.c3 Ba5=) 6...b6 (6...d5 7.Nf3=) 7.Nf3 0-0 8.0-0 d5 9.c4 (9.d4 ed4 10.Nd4 a6+=) 9...Be6 (9...e4 10.Nd4=) 10.cd5 cd5 (10...Bd5 11.d4 ed4 12.Nd4=) 11.d4+/– Bd6 (11...ed4!? 12.Nd4 Qd6+/–) 12.de5 Bc5 (better is 12...fe5!? 13.Be5 Be5 14.Ne5 Qd6+/–) 13.ef6+– gf6 14.Bd4 (14.Bd3 Bg4+–) 14...Nd7 15.Nbd2 Nf5 16.Nb3 Rc8 17.Rc1 Rc7 (17...Qe7 18.Bd3+–) 18.Qd2 (18.Bd3 Rf7+–) 18...Qe7 19.Rc2 (19.Rfd1 Rfc8+–) 19...Rfc8 20.Rfc1 Bb4 21.Bc3 (21.Rc7 Rc7 22.Bc3 Rc3 23.Rc3 Nc5 24.Nc5 bc5+/–) 21...Bd6 (21...Ba3 22.Ra1+–) 22.Nbd4 Nd4 23.Nd4 (worse is 23.ed4 Bf5 24.Bd3 Bd3 25.Qd3 Qe4+=) 23...Bf7 (23...Ne5 24.a5+–) 24.Nc6 (24.Nf5 Qf8+–) 24...Qf8 (24...Qe6 25.Qd1+–) 25.Bf3 Nc5 26.Bd5 Bd5? (26...Nb3 27.Bb3 Bb3+–) 27.Qd5 Qf7 (27...Kh8 28.Rd1 Be7 29.Qf3+– (worse is 29.Ne7 Qe7 30.Bd4 Ne4 31.Rc7 Rc7+–)) 28.Qf7 (better is 28.Qd6 Kg7 29.Nd4+–) 28...Kf7 29.a5 Nb3 30.ab6 ab6 31.Rd1 Bf8 32.Bd4 Nd4 33.ed4 Bd6 34.d5 Rg8 35.g3 Be5 (35...Ra8 36.Kg2+–) 36.Nd4 (better is 36.Ne5 fe5 37.Rc7 Kg6 38.d6+–) 36...Re8?! (36...Rc2 37.Nc2 Rc8+–) 37.Nc6 (better is 37.Rc6+–) 37...Rcc8?? (37...Rg8 38.Ne5 fe5 39.Rc7 Kg6+–) 38.Rdc1 (38.Rdc1 Ra8 39.Kg2+–; better is 38.d6 Rg8 39.d7+–) 1–0. Ruhle,Ernst_Albrecht (1610) – Oettli,Godi (1640), 04 sen. Bad Ragaz, 2006.

5.Nf3 0-0 6.d4 Bb4 7.c3 Ba5 8.de5 fe5 9.Ne5 d6 10.Bc4 Kh8? 11.Nf7+– Rf7 12.Bf7 c6 13.a4 cb5 14.ab5 Bb6 15.c4 Bf5 16.0-0 Nd7 17.Qd6 Bc5 18.Qf4 Qf8 19.Bd5 Ng6 20.Qc7 Bd6 21.Ba3 Bc7 22.Bf8 Rf8 23.Bb7 Bb6 24.Nc3 Bd3+/– 25.Rfd1 Bf5? 26.Nd5 Nc5 27.Nb6 ab6 28.Bd5 h6 29.Ra7 Rb8 30.Bf3 Ne5 31.Be2 Bd3 32.Bd3 Ned3 33.Kf1 Kh7 34.Ke2 Nf4?? 35.ef4 Kg6 36.Rd6 Kf5 37.g3 Re8 38.Kf3 Ne6 39.Rf7 Kg6 40.Rb7 Kf5 41.g4 Kf6 42.f5 Ke5 43.Re6 Re6 44.fe6 Ke6 45.Rg7 Kd6 46.Rg6 Kc5 47.Rc6 Kb4 48.Rh6 Kc4 49.Rb6 Kc5 50.Rb8 (50.Rb8 Kb4 51.g5 Kc5 52.g6 Kb4 53.g7 Kc4 54.g8Q Kc3 55.Rc8 Kb2 56.Qg1 Ka2 57.Rc2 Ka3 58.Qb1 Ka4 59.Ra2) 1–0. j1a9n55 – andrevvvv, internet, 2011.

5.Nf3 0-0 6.d4 ed4 7.Nd4 a6 8.c4 ab5 (8...d6 9.Bd3+=) 9.cb5 c6 10.a4 (10.Bd3!?+=) 10...d5= 11.Bd3 Bd4 12.Bd4 Bf5 13.0-0 Nd7 14.Qc2 (14.Bf5 Nf5 15.bc6 bc6=) 14...Bd3 15.Qd3 Ne5 (15...c5 16.Bc3=) 16.Qc3 Nc4 (16...Qd7 17.Be5 fe5 18.Qe5 cb5 19.Nc3=) 17.Nd2+= Nd2 18.Qd2 Nf5 19.Rfc1 Nd4 20.Qd4 ½–½. Labahn,Wolfgang – Petrasch, Enger–Spenge, 1980.

5.Nf3 0-0 6.Be2 e4 7.Nd4 d5 8.c4 c6 9.a4 a6 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Ng6 (12...Bd6 13.cd5 Nd5 14.Nc3 Nc3 15.Bc3=) 13.Qb3 Kh8 14.bc6 (14.cd5 cd5 15.d3 f5+=) 14...Nc6= 15.cd5 Nd4 16.ed4 (16.Bd4 Bd4 17.ed4 Nf4=) 16...Bd6 17.Nc3 f5 (17...Nf4 18.Bc4 Qe8 19.Ne2=) 18.Nb5= Nf4 19.Bc4 Bb8 Attacks the isolani on d5 20.Kh1 Bd7 21.g3 Bb5 (21...Nh3 22.Nc3=) 22.Qb5+= Nh5 (22...Nh3 23.d3+=) 23.Qb7 f4 24.Bc3 fg3 25.fg3 Bg3? (better is 25...Bd6+/–) 26.Rf8+– (26.hg3?! Ng3 27.Kg1 Nf1 28.Bf1 e3+=) 26...Qf8 27.hg3 Qf3 28.Kg1 Qd1? (28...Qg3 29.Kf1 Qf3 30.Ke1 h6+–) 29.Bf1 (29.Kh2 Nf6 30.Qb8 Ng8+–) 29...h6 1–0. DEFFM – GuestGJSD, freechess.org, 2017.

5.Nf3 d5 6.c4 Be6 (6...Bg4 7.d4 ed4 8.ed4 Bb4 9.Nc3 dc4 10.Bc4 Bf3 11.gf3=) 7.cd5 (7.d4 ed4 8.Nd4 Bd4 9.Qd4 dc4 10.Qd8 Kd8=) 7...Bd5 (7...Nd5 8.e4 Nf4 9.d4 ed4 10.Nd4=) 8.Nc3 (8.d4 ed4 9.Nd4 Bb4 10.Bc3 Qd6=) 8...Bf7 (8...e4 9.Nh4 Bb4 10.d3=) 9.Qc2 (9.d4 ed4 10.Nd4 a6=) 9...0-0 (9...Bg6 10.Ne4 Nd7 11.Bc4=) 10.Bd3 h6 (10...Ng6 11.Be4 c6 12.0-0+=) 11.0-0+= Bb6 (11...c6 12.Bh7 Kh8 13.Be4=) 12.Be4 (12.Rfd1 c5+=) 12...c6 13.a4 (13.Rfd1 f5 14.Bf5 Nf5 15.Qf5 Bb3 16.Qe5 Nd7+=) 13...Ba5 (13...Be6 14.Ba3 f5 15.bc6 bc6 16.Ne5 fe4 17.Be7 Qe7 18.Ng6=) 14.Nh4 (14.d4 f5 15.bc6 A) 15...fe4?? 16.cb7 Nbc6 17.ba8R (17.ba8B?! ef3 18.Bc6 Nc6+–; worse is 17.ba8N ef3 18.de5 Qa8–/+; 17.ba8Q Qa8 18.Ne5 Ne5 19.de5 Rb8+–) 17...Qa8 18.Ne5+– (18.Qe4?! Bg6 19.Qg4 Qb7+–); B) 15...bc6 16.Bf5 Nf5 17.Qf5 Bc4 18.Qe5 Nd7+=) 14...Bc3 (14...Qd7 15.Ba3=) 15.Bc3 (15.dc3 Qb6+=) 15...Nd5 16.Bg6 (16.Rfc1 cb5 17.ab5 Qd7+=) 16...Qe8 (16...cb5 17.Rfb1=) 17.Bh7+= Kh8 18.Be4 (better is 18.Rfb1+=) 18...cb5? (18...Qd7 19.Rfb1+=) 19.ab5 (better is 19.Bd5 Bd5 20.Ng6 Kg8 21.Nf8 Kf8 22.e4+–) 19...Qb5? (19...Qd7 20.Qd3 Rd8 21.Rfc1+=) 20.Rfb1?? (better is 20.Ra5 Qc4 21.Bd5 Qh4 22.Bb7+–) 20...Qd7= 21.Bf5 (21.Qb2 b6+= (worse is 21...Nc3 22.dc3 Nc6 23.Qb7 Qb7 24.Rb7+/–)) 21...Qc7+= 22.Ng6 (22.Ba5 Qc2 23.Bc2 Nc6 24.Rb7 Rab8 25.Rb8 Rb8=) 22...Bg6 23.Bg6 Nc3 (23...Nc6 24.Be4 Rfd8 25.Rb5 Nc3 26.Qc3=) 24.dc3 (24.Qc3 Nc6=) 24...Nc6+= 25.Bh5 (25.Be4 Rfd8+=) 25...a5 (25...f5 26.Be2–/+) 26.Qg6 (26.Bf3 f5+=) 26...Ne7 (better is 26...f5–/+) 27.Qg4? (27.Qc2 Rfd8+=) 27...Rfb8 (27...g6!? 28.Bg6 Rg8 29.Qf3 Rg6 30.Qb7 Qb7 31.Rb7–+) 28.Qf3 Attacks the backward pawn on b7 (28.Qe6 Ra6 29.Qf7 Rc6–/+) 28...b5 (28...Qc3 29.Rc1 Qb3 30.Rab1–/+) 29.Qe2 (29.Rb5 Qc3 30.Rb8 Rb8–/+) 29...b4 (better is 29...Qc3!? 30.Bf3 Ra7–+) 30.Bf3–/+ Ra7 31.cb4 ab4 0–1. GuestBTJT – GuestBDYG, freechess.org, 2016.

5.Nf3 d5 6.d4 Bb4 7.c3+= Bd6 8.Qb3 (8.de5 fe5 9.Ne5 0-0+=) 8...0-0 (8...e4 9.Nfd2=) 9.c4 c6 (9...ed4 10.Bd4 c5 11.Bb2+=) 10.c5 Bc7 11.Nbd2 (11.de5 fe5 12.Ne5 cb5 13.Bb5 Nbc6+/-) 11...e4 (better 11...Nd7!?=) 12.Ne4+/- Kh8 (12...Bg4 13.Ned2+/-) 13.Ned2 Bf5 14.Bd3 Bd3 15.Qd3 Ba5 16.0-0 Bc7 17.a4 Nd7 18.Rfe1 Ng6 19.Nf1 f5 20.Ng3 (20.N1d2 Qf6 21.Bc3 Rab8+/-) 20...Qf6 21.a5 Ne7 (21...Bg3 22.hg3 Rab8 23.a6+/-) 22.b6 (22.Reb1 Bg3 23.hg3 Rab8+/-) 22...Bb8 23.Qc2 a6 (23...Bg3 24.hg3 Rfe8 25.a6+/-) 24.Re2 (24.Ne2 Ng6+/-) 24...g5 (24...Bg3!? 25.hg3 Kg8+/-) 25.Nf1+- g4 26.Ne1 Qh6 27.f3 (27.Rd1 Nf6+-) 27...Kg8 (27...Nf6 28.Nd3+/-) 28.e4 (28.fg4 fg4 29.e4 Rf1 30.Kf1 Bh2 31.ed5 Nd5=) 28...fe4 (28...gf3 29.gf3 fe4 30.fe4+/-) 29.fe4 Rf1 30.Kf1 Bh2 31.ed5 Bg3? (31...Nd5 32.Bc1 Qh4=) 32.Re7+- Rf8 33.Ke2 Rf2 34.Kd1 Rc2 35.Kc2 (35.Nc2?! Qh1 36.Kd2 Qg2 37.Kc3 Nf6=) 35...Qg6 (35...Qf8 36.d6+- (36.Rd7?! Qf5 37.Nd3 Qd7=)) 36.Kb3 (36.Nd3!? Qf5 37.dc6 bc6+-) 36...Nf6 (better 36...Be1 37.Rae1 Qd3 38.Bc3 cd5+-) 37.dc6?? (better 37.d6 Qf5 38.Bc3 (38.Rb7?! Qe6 39.Ka3 Qe3 40.Ka4 Qe2=) 38...Qd5 39.Kc2+-) 37...Nd5= 38.cb7 (38.Re2 Qc6 39.Kc2=+) 38...Ne7=+ 39.d5? (better 39.Ka3=+) 39...Nd5-+ 40.Rd1 (40.Rc1 Qe6 41.Ka3 Qe3 42.Ka4 Qe4 43.Kb3 Qb4 44.Kc2 Qc5 45.Kd1 Qa5 46.b8R Bb8 47.Rc8 Kf7 48.Rb8 Qa4 49.Nc2 Ne3 50.Kd2 Qc2 51.Ke3 Qb2-+) 40...Qe4 (40...Qc6 41.Rd4 Qb5 42.Ka2 Qa5 43.Kb3 Qb5 44.Ka2 Nb4 45.Ka3 Qa5 46.Kb3 Qa2 47.Kb4 Qb2 48.Kc4 Qc1 49.Kd5 Qe1 50.Rg4 Kf7 51.Re4 Qd2 52.Kc4 Qc2 53.Kd5 Qd3 54.Rd4 Qf5 55.Kc4-+) 41.Nc2 Kf7 42.Rd4? (42.c6 Nb6! (42...Qg2?! 43.c7 Bc7 44.bc7 Qg3 45.Ka4 Qc7 46.Rd5=+) 43.ab6 Qc6-+) 42...Qe6 (42...Qg2 43.Rc4 Qf3 44.Bc3 Nc3 45.Rc3 Qd5 46.Ka3-+) 43.Ka4? (better 43.Rc4 Qe2 44.c6 Qd3 45.Bc3 Nc3 46.Rc3 Qd5 47.Rc4 Qa5 48.Rb4 Qd5 49.Rc4 Qd3 50.Rc3 Qb5 51.Nb4-+) 43...Bb8 (better 43...Qc6 44.Kb3 Qc5 45.Rg4 Qb5 46.Nb4 Nb4 (46...Qa5?! 47.Bc3 Nb4 48.Rg3 Qd5 49.Ka3-+) 47.Rb4 Qa5-+) 44.Bc1 (44.Nb4 Nb4 45.Kb4 Qc6-+) 44...Qd7 (better 44...Nc3 45.Kb4 Na2 46.Ka3 Nc1 47.Kb2-+) 45.Kb3 (45.Ka3 Qc6 46.Bd2 Qc5 47.Kb2 h5-+) 45...Qb5 46.Nb4 Qc5 (better 46...Nb4 47.Rb4 Qd3 48.Kb2 Be5 49.Ka2 Qd5 50.Kb1 Qc5-+) 47.Rd5-/+ Qc1 48.Rd4 (48.Rd4 Qe3 49.Kc4 Qe2 50.Kb3-+). upep (2050) - lexich (2205), Rated Blitz game, lichess.org, 2013.

5.Qh5 Ng6 6.Nf3 d6 7.Bd3 Ke7 8.Bg6 hg6 9.Qg6 Be6 10.d4 ed4 11.ed4 Bb4 12.c3 Ba5 13.0-0?? c6?? 14.Re1 d5 15.Qg7 Kd6 16.Nbd2 Rg8 17.Ba3 c5 18.Bc5 (18.dc5?!=) 1–0. elsh1403 – najlik23, internet, 2011.

6.Nc3 d5 7.cd5 Nd5 (better is 7...Nf5!?+=) 8.Bc4+/– Be6 9.Qb3 c6 10.bc6 bc6 11.e4 1–0. Fredek (2090) – AntoonWeef, Freundschaftspartie, 5m + 0s, 2005.

6.Nf3 c6 7.a4 d5 8.Nc3 (8.d4 ed4 9.Bd4 Bd4 10.Qd4 Be6=) 8...d4 (8...Bg4 9.cd5 cd5 10.Be2=) 9.ed4 (9.Ne4 b6=) 9...ed4 (9...Bd4 10.Be2=) 10.Ne4= Bb6 11.c5 Bc7 (11...f5 12.Qb3 Nd5 13.cb6 fe4 14.Nd4 Qf6 15.bc6 Qf2 16.Kd1 bc6+–) 12.Nd4 Be5 13.Bc4 (13.Qb3 Kh8 14.Ne2 Bc7+=) 13...Kh8+= 14.Nd6 Bd6 15.cd6 Qd6 16.Qe2 Nd5 17.Ba3 c5 18.0-0 Nf4 19.Qe3 g5? (better is 19...Nd5 20.Bd5 Qd5+=) 20.Nb3+– b6 21.d4 (21.d4 Qd7 22.dc5+–) 1–0. GuestSNRH – GuestXWXJ, freechess.org, 2017.

6.Nf3 d6 7.Nc3 Nd7 (7...a6 8.d4 ed4 9.Nd4=) 8.Be2 Nb6 (8...Bb4 9.0-0=) 9.a4 (9.Qb3 Nf5 10.d4 ed4 11.ed4 Nd4 12.Nd4 Bd4 13.c5 Kh8 14.cb6 Bb6+–) 9...a5 (9...Be6 10.d3=) 10.ba6 Ra6 (10...ba6 11.d4 Bb4 12.0-0=) 11.a5 Nd7 12.Qb3 (better is 12.d4 ed4 13.ed4+=) 12...c6?? Attacking the isolated pawn on a5 (better is 12...Nc6+=) 13.d4+/– ed4 14.ed4 Ba7 15.0-0 (better is 15.c5!? d5 16.Ba6 ba6 17.0-0+–) 15...c5+= (worse is 15...Ra5 16.c5 d5 17.Ra5 Qa5 18.Ra1 Nc5 19.Ra5 Nb3 20.Ra7+–) 16.d5 Ra5 17.Nb5 (17.Ra5 Qa5 18.Ra1 Qb6 19.Qb6 Bb6+/– (19...Nb6?? 20.Ra7 Re8 21.Bf1+–)) 17...Ra1= 18.Ra1 Bb8 19.Bd3 Ne5 20.Be4 Nf3 (20...Bg4 21.Nd2=) 21.Bf3 (21.Qf3 Bd7+=) 21...Ng6 22.Qc2 Ne5 23.Be4 f5 24.Bd3 Nd3 25.Qd3 f4 26.Qc3 (26.Qf3 Bd7=) 26...Qe7 (26...Qg5 27.Ra8 Bd7 28.Qd2+=) 27.Re1= Qg5 (27...Qf7 28.Re4+=) 28.h4 Qg6 29.Qf3 (29.Re7 Rf7 30.Re8 Rf8=) 29...Bg4+= 30.Qc3 f3 (30...Bd7 31.Qf3+=) 31.g3 (31.Re7 Rf6 32.g3 Rf7 33.Re8 Rf8=) 31...Bh3 (31...Bd7!?+=) 32.Re7= Qb1?? (32...Rf7 33.Re8 Rf8 34.Rf8 Kf8 35.Qf3 Kg8 36.Qe3=) 33.Bc1 (better is 33.Kh2 Qb2 34.Rg7 Kh8 35.Qb2 Rf6 36.Qf6 Bf5 37.Qf8) 33...Rf7= 34.Re8 Rf8 35.Re7 Qg6?? (35...Rf7 36.Rf7 Kf7 37.Qf3 Kg8 38.Qe2=) 36.Kh2?? (better is 36.h5 Qf6 37.Qf6 gf6 38.Rb7+–) 36...Bc8= 37.Bb2 Qf6?? (better is 37...Rf7 38.Re8 Rf8 39.Rf8 Kf8 40.Qf3 Kg8=) 38.Qf6 (38.Rg7 Kg7 39.Qd2+– (39.Qf6?? Rf6 40.g4 Bg4–+)) 38...gf6+= 0–1. GuestQJFT – GuestTGGN, freechess.org, 2017.

6.Nf3 d6 7.d4 ed4 8.Nd4 Ng6=.

6.Nf3 d6 7.Be2 c6 8.a4 Bd7 (8...e4 9.Nd4=) 9.0-0 a6 (9...e4 10.Nd4=) 10.Nc3 Bb4 11.d4 Bc3 12.Bc3 ab5 13.ab5 Ra1 14.Qa1 Qb6 (14...cb5 15.cb5 e4 16.Nd2+/–) 15.de5 (15.Ba5!? Qa7 16.Bc7 Qa1 17.Ra1 ed4 18.Bd6 de3 19.Be7+–) 15...fe5+/– 16.Rd1 c5? (better is 16...cb5!? 17.cb5 Be6+– (17...Bb5? 18.Rb1+–)) 17.h3 (17.Ba5 Qa7 18.Bc7 Qa1 19.Ra1 Bg4 20.Bd6 Re8+–) 17...Bf5 (better is 17...Nf5+–) 18.Ng5 (better is 18.Ba5 Qa7 19.Bc7 (19.Rd6?! e4 20.Ne5 Nc8+–) 19...Qa1 20.Ra1+–) 18...h6+= 19.Nf3 Nd7 (better is 19...Nc8+/–) 20.Bd3?? (better is 20.Ba5 Qa7 21.Rd6+/–) 20...e4 21.Bg7 Rf7 (worse is 21...ed3 22.Bf8 Kf8 23.Qh8 Ng8 24.Nd2+=) 22.Bh6 ef3 23.gf3?? (better is 23.Qa8 Kh7 24.Qe8+=) 23...Bd3–+ 24.Rd3 d5 25.Bf4 (25.Kh2 Qh6 26.f4–+) 25...Qg6 26.Bg3 Qd3 27.Qa8 Nf8 28.Qb7 Qc4 29.b6 (29.Qb8–+) 29...Nf5 30.Qc8 Ng3 31.Qg4 Rg7 (31...Rg7 32.fg3 Rg4 33.fg4 Qe2–+) 0–1. DEFFM – CSvet, freechess.org, 2017.

6.Nf3 d6 7.Be2 e4 8.Nd4=.

5.ba6 Na6 6.Bc4=.

5.c3 Qe7 6.ba6 ba6 7.Nf3 Nh6 8.Be2 =.

5.Bc4 c6=+ 6.a4 a6 7.Qh5= Ng6 8.g3 ab5 9.ab5 Ra1 10.Ba1 d5 11.ed5 cd5 12.Bd3 0-0 13.Bg6 hg6 14.Qg6 Qa5–+ 15.h4?? Qa1 16.c3 f5 17.h5 Qb1 18.Ke2 Qb5 19.Ke1 Qb1 20.Ke2 Qe4 (20...Qe4 21.Kf1 Qh1–+) 0–1. mic (2200) – petko (2335), net–chess.com, 2008.

5.d4 ed4?? 6.Qh5+– (6.Qh5 Ng6 7.Qc5+–) 1–0. pcmvr (2225) – leen (2205), net–chess.com, 2006.

5.d4 Bd4 6.Bd4 ed4 7.Qd4 Ng6=.

5.d4 ed4 6.Bd4 Bd4 7.Qd4 a6+=.

5.Bg2 c6 6.a4 cb5 (6...d5 7.Nf3=) 7.ab5 Qb6 8.e3 Secures d4 8...Qb5 9.Bc3 (9.Ba3 Ba3 10.Na3 Qc5=) 9...Nbc6 (9...d5 10.Nf3+=) 10.Ne2 (10.d4 ed4 11.ed4 Bb4=) 10...d6 (10...d5 11.d4 Bd6 12.Na3 Ba3 13.Ra3=) 11.0-0 0-0 (11...Bg4 12.Re1+=) 12.Na3 Ba3 13.Ra3 White has the pair of bishops 13...Be6 14.Nc1 Qc5 Black threatens to win material: Qc5xa3 15.Ra1 d5 (15...a5 16.Nd3 Qa7 17.Nb4=) 16.Nb3 White threatens to win material: Nb3xc5 16...Qd6 17.Bb2 b5 (17...b6 18.Qc1+=) 18.c3 Controls b4+d4 18...a5 19.Qc2?? (better is 19.d4= was much better) 19...a4–+ 20.Ba3 ab3 21.Qb3 (21.Bd6?? White will choke on that 21...bc2 22.Rac1 Ra2–+) 21...Qb8 (21...Qd7!? seems even better 22.Bc5–+) 22.Rfb1 Kf7 (better is 22...Qc7 23.Qb5 Rfb8 24.Qf1 Rb1 25.Qb1–+) 23.Qb5? (better is 23.Bf1–+) 23...Qb5 24.Rb5 Rfb8 25.Rb8 Rb8 (25...Nb8 26.f3–+) 26.Bf1 (26.f4 g6–+) 26...Ra8 (26...e4 and Black can already relax 27.d4–+) 27.Bb2 (27.f3 Nc8–+) 27...Ra1 28.Ba1 Na5 29.Bb2 Nec6 30.d4 e4 31.Bb5 Na7 32.Ba6 Bd7 33.Ba3 (33.Be2 Nc4 34.Bc4 dc4–+) 33...Bb5 34.Bc5 Ba6 35.Ba7 Nb3 36.Kg2 (36.Bb6 is not the saving move 36...Be2–+) 36...Ke6 (36...Nd2 makes it even easier for Black 37.Bb8–+) 37.f4 (37.g4 doesn't do any good 37...Be2 38.Kg3 Bf3–+) 37...ef3! sealing the opponent's fate 38.Kf3 Nd2 39.Kf2 (39.Kg2 does not solve anything 39...Ne4–+) 39...Ne4 40.Ke1 (40.Kg2 cannot change what is in store for White 40...Nc3 41.Bc5 Be2–+) 40...Nc3 41.Kd2 (41.g4 is no salvation 41...Ne4–+) 41...Ne4 42.Kc2 Kf5 43.Bb8 Kg4 44.Bf4 Kh3 45.Kd1 Kh2 46.g4 (46.Kc2–+ otherwise it's curtains at once) 46...Kh3 0–1. Buna,Madalina – Mathe,Katalin, ROM–ch U14 Girls, 2012.

5.Bg2 c6 6.e3 d5 7.d4+=.

5.Bg2 d6 6.e3 (better is 6.Nf3+=) 6...Bd7?? (6...0-0 7.d4 Bb6 8.Ne2+=) 7.a4 (better is 7.Bb7 Na6 8.Ba6+–) 7...c6= 8.c4 (8.d4 Bb4 9.Bc3 Bc3 10.Nc3 0-0=) 8...a6 (8...Be6 9.Nc3+=) 9.Ne2 (9.Qh5 g6 10.Qf3 A) 10...cb5?! 11.ab5 (worse is 11.Qf6 Rf8 12.Qh4 bc4+=; 11.Qb7? Bc6 12.Bc6 Nbc6 13.ab5 Ra7 14.bc6 Rb7 15.cb7 Qb6–+) 11...f5 12.Qe2=; B) 10...ab5?! 11.cb5 Nd5 12.Bc3+=; C) 10...f5+=) 9...0-0 (9...ab5!? 10.cb5 cb5 11.ab5 Ra1 12.Ba1 Bb5+=) 10.0-0 Be8 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.d4+= White gets the initiative 11...Ba7 (11...Bb6 12.Nbc3+=) 12.de5+/– Bc5 (better is 12...fe5!? 13.Be5! Bf7 14.Qd6 Bc4+/–) 13.ef6+– gf6 14.Nf4 Qc8 (14...Bd7 15.Nc3 Ng6 16.Ng6 hg6 17.Ne4+–) 15.Bh3 (15.Nc3!? ab5 16.Ne4 Ng6+–) 15...Bd7 16.Bd7 Qd7 17.Nc3 f5 (17...ab5 18.ab5 Ra1 19.Qa1+–) 18.Nce2 (18.Qh5 Rf7+–) 18...Rf7 (18...Ng6 19.bc6 bc6 20.Nd3+–) 19.Ba3 (19.Qd3 Ng6+–) 19...ab5 20.Bc5 dc5 21.Qd7 (21.ab5 Qd1 22.Rfd1 Ra1 23.Ra1 b6+–) 21...Nd7+/– 22.cb5 (22.ab5 Ra1 23.Ra1 cb5 24.cb5 Rf6+–) 22...cb5 (22...c4 23.Rfc1+/–) 23.ab5+– Rc8 (23...Ra1 24.Ra1 Rf6 25.Ra7+/–) 24.Ra7 Rb8 25.Rfa1 Rff8 26.Rd1 (26.h3 Kf7+–) 26...Ne5 27.Kg2 (27.Ne6 Rfc8+–) 27...Kh8 (27...Kf7 28.Nc3+/–) 28.Ne6 Rfc8 29.h3 (29.Nc3 c4+–) 29...N7g6 (29...c4 30.Nc3+–) 30.g4 (30.Rd5 b6+–) 30...Nc4? (better is 30...fg4 31.hg4 Ng4+–) 31.Rd3 (better is 31.gf5!? Nh4 32.Kf1 Nf5+–) 31...Re8? (better is 31...fg4 32.hg4 Nge5+–) 1–0. Guenther,Lars – Rajewski,C, Wch Seniors Bad Woerishofen, 1992.

4.a4 Qa5 5.c4 cb5 (5...d5!? 6.bc6 Nc6 7.cd5 Qd5=+) 6.ab5+= Qb4 7.Ba3 (better 7.Qc2 Ne7 8.e4+=) 7...Qa5?? (better 7...Qc4 8.Bf8 Kf8=+) 8.Bf8+- Qa1 9.Bg7 d5 (9...Ne7 10.Bh8 f5 11.e3+-) 10.cd5 (worse 10.Bh8 dc4 11.e4 Be6+-) 10...Bf5 11.d3 (11.Nc3 Qd1 12.Kd1 Nd7 13.Bh8 Nh6+-) 11...Nd7 12.e4 Bg6 (12...Ne7 13.Bh8 (13.ef5?! Rg8 14.Bh6 Nd5+-) 13...Kf7 14.Bf6 Nf6 15.d6+-) 13.Nf3 (better 13.Bh8 Kf7 14.h4 Nh6+-) 13...Kf7 14.Bh8 Ne7 (14...Nh6 15.Bf6 Kf6 16.Nbd2 Qd1 17.Kd1+-) 15.Be2 (better 15.d6 Rh8 16.Qb3 Ke8 17.de7+-) 15...Rh8 16.0-0 Nc5 (16...Qb2 17.Nbd2+-) 17.Qc2 b6 18.Nh4 (18.Nbd2 Qa3+-) 18...Rc8 (18...Rd8 19.Nc3 Qa3 20.Bg4+-) 19.Ng6 (19.d6 Ng8 20.Nd2 Qa3+-) 19...hg6 20.Nc3 (20.d6 Ng8 21.Qc4 Kg7+-) 20...Qa5 21.Bg4 Rc7?? (21...f5 22.ef5 gf5 23.Bh5 Ng6+-) 22.Be6 (better 22.d6 Rb7 23.de7 Re7+-) 22...Kg7? (better 22...Ne6 23.de6 Ke6 24.Qb3 Kd7+-) 23.d6+- Ne6 24.dc7 (24.de7?! Re7 25.Nd5 Rf7+-) 24...Nc7 (24...Nd4 25.Nd5 Nd5+- (25...Nc2?? 26.Ne7 Qc3 27.c8Q Qc8 28.Nc8+-)) 25.Nd5 (better 25.Qb2 Nb5 26.Nb5+-) 25...Ned5 26.ed5 Nd5 27.Qc6 Nf4 28.Qd7 Kh6 29.g3 Ne2 30.Kg2 Qd2? (30...Qa2 31.Re1 Nd4 32.Re4+-) 31.Qa7 (better 31.Qd8!? Nd4 32.Qh8 Kg5+-) 31...Qd3 32.Qb6 Qd5 (32...Kg7+-) 33.f3 Nd4 (33...Kg7 34.Qa7 Kg8+-) 34.Rd1 (better 34.Qf6 Kh7 35.Re1+-) 34...Qf3 35.Kh3 g5 (35...Qh5 36.Kg2 Qe2 37.Kh3 Nf3 38.Qf2 Qf2 39.Rh1 Ng5 40.Kh4 Qd4 41.g4 Qf2) 36.Rd4-+ ed4 37.Qd4 (37.Qe6 d3 38.Qf7 Qf1 39.Kg4 f5 40.Qf5 Qf5 41.Kf5-+) 37...f5 (37...Qf1 38.Kg4 f5) 38.Qf6+- Kh5 Threatening mate... how? 39.Qf7 Kh6 Threatening mate... how? 40.Qf8 Kh5?? (40...Kg6 41.Qe8 Kf6 42.Qc6 Qc6 43.bc6+-) 41.Qh8 (better 41.Qe8 Kh6 42.Qc6 Qc6 43.bc6+-) 41...Kg6+- Threatening mate: Qf1 42.Qg8 (42.Qe8 Kf6 43.Qc6 Qc6 44.bc6+-) 42...Kh5?? (42...Kf6 43.Qf8 Kg6 44.Qe8 Kf6 45.Qc6 Qc6 46.bc6 Ke6+-) 43.Qh7 1-0. aravind555 - Poisonedrook (1695), lichess.org, 2018.

4.a4 b6 5.e3 c5 (5...d5 6.d4 e4 7.Ba3=) 6.Qf3 (better is 6.Be5 d5 7.Bf4+/–) 6...Qc7?? (better is 6...d5+=) 7.Qa8+– Bb7 (7...Qb7 8.Qb7 Bb7 9.a5+–) 8.Qa7 Bd6 (8...Ne7 9.a5 Nc8 10.ab6 Nb6 11.Bc3+–) 9.a5 ba5 10.Qa5 Qc8 11.Nf3 (11.Qb6 Be7+–) 11...Ne7 (11...Be7 12.Be2+–) 12.Bc4 (12.Qb6 Nf5+–) 12...Nd5 13.e4 (13.Qa2 Nb4 14.Qb3 Qc7+–) 13...Ne7 (13...Nb4 14.Na3 Be4 15.Qa4+–) 14.d3 Bc7 15.Qa2 Qd8 (15...d5 16.ed5 Nf5 17.0-0+–) 16.Bf7 (16.Nc3 Bb6+–) 16...Kf8 17.Bb3 d5 18.ed5 (18.Qa7 c4 19.Bc4 dc4 20.Qb7 cd3 21.cd3 Kf7+–) 18...Bd5 19.Nbd2 Bb3 20.Nb3 Bd6 21.Nbd2 g5 (21...Nf5 22.Qd5 Ne7 23.Qe6+–) 22.Ne4 Kg7 (22...Ng6 23.Qd5 Be7 24.Qd8 Bd8 25.Ra8+–) 23.Qe6 Bc7 24.Qf6 Kg8 25.Qe6 Kg7 1–0. GuestLTQB – ahazia, freechess.org, 2017.

4.a4 c5 5.e3 (5.e4 d5=) 5...Qa5 (5...d5!?=) 6.Qh5+= g6 7.Qf3 Qb4 (7...d6 8.Bc4+=) 8.Bc3 Qh4 9.g3 Qh6 10.Bc4 Ne7? (better is 10...d6+=) 11.Be5?? (better is 11.Qf6 Bg7 12.Qd6+–) 11...fe5–+ 12.Bf7 (12.Nc3 Qg7–+) 12...Kd8 13.Nc3 d6 (13...Bg7 14.Bd5 Rf8 15.Qg2 Nd5 16.Qd5–+) 14.a5 (better is 14.Qf6 Qg7 15.Qd6 Nd7 16.Bb3–/+) 14...Bf5?? (better is 14...Nd7–+) 15.Qb7+– Bg7 (15...Qg7 16.Bc4 d5 17.Bd5 Nd5 18.Qa8 Bd6 19.Qd5 Qd7+–) 16.Qa8 Kd7 (16...Rf8 17.Qb8 Nc8+–) 17.Qb7 White prepares the advance b6 (17.Qa7 Kc8 18.b6 Na6 19.Qa6 Kd7 20.Qb7 Kd8 21.Qc7) 17...Kd8 18.Qb8 Bc8 (18...Kd7 19.Qb7 Kd8 20.b6 ab6 21.ab6 Qe3 22.de3 Nd5 23.Ra8 Bc8 24.Rc8) 19.b6 Nc6 (19...ab6 20.ab6 Qe3 21.de3 Nd5 22.Qd6 Bd7 23.Ra8) 20.Qc7 1–0. GuestYWTD – GuestMMKV, freechess.org, 2016.

4.a4 Ne7 5.e3 Nf5 (5...d5 6.d4 ed4 7.Bd4=) 6.d4 Qa5 (6...ed4 7.e4 Qe7 8.Qh5 (worse is 8.Bd4 Qe4 9.Ne2 Nd4 10.Qd4 Qc2–/+) 8...g6 9.Qe2+=) 7.Nd2 (7.Qd2 Qd2 8.Nd2 ed4+=) 7...d5 8.de5 fe5 9.Be5 Nd7 10.Bb2 Bb4 11.Ngf3 0-0 12.Be2 Qb6 13.0-0 Bd6 (13...a6!?+/–) 14.c4 Nf6 15.Qc2 Ng4 16.h3?? (better is 16.e4 Nf2 17.Rf2+– (17.ef5?! Bf5 18.Bd4 Nh3 19.gh3 Bc2 20.Bb6 ab6+/–)) 16...Bh2?? (better is 16...Nge3 17.fe3 Qe3 18.Rf2 Bc5–/+) 17.Nh2+– Nh2? (17...Nge3 18.a5 Qc5+–) 18.Kh2 Qc7 19.Kg1 Nh4 (19...Qf7 20.Bd3+–) 20.Nf3 (better is 20.cd5 Qd8 21.dc6 bc6 22.Qc6 Bh3+–) 20...Rf3 (20...Nf3 21.Bf3 Rf3 22.gf3+–) 21.Bf3 (better is 21.gf3!? Qf7 22.Rfd1 Bf5+–) 21...Nf3 22.gf3 Bh3 23.Qc3 (23.Rfd1!? Qf7 24.f4 Qe6+–) 23...Qe7 (23...Qf7 24.Qe5 Bf1 25.Rf1+–) 24.Qe5 Qd7 (24...Qe5 25.Be5 Bf1 26.Kf1 dc4 27.bc6 bc6+–) 25.cd5 cd5 (25...Bf1 26.dc6 bc6 27.bc6+–) 26.Rfd1 Rd8 (26...Qf7+–) 27.Rd5! h6 (27...Qd5 28.Qg7) 28.Rd7 Rd7 29.Kh2 (29.Rc1 a6 30.Rc8 Kh7 31.Qe4 Bf5 32.Qf5 g6 33.Qd7) 29...Be6 30.Qe6 Kh7 (30...Rf7 31.Rg1 Kf8 32.Ba3 Kg8 33.Qe8 Kh7 34.Qf7 a6 35.Qg7) 31.Qd7 h5 (31...Kg6 32.Rg1 Kh7 33.Qg7) 32.Qg7 1–0. agrillage – aliwood, internet, 2005.

4.a4 Nh6 5.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6 5.a4 Nh6).

4.Nc3 Bb4 5.a3 Bc3 6.dc3 (6.Bc3!? Ne7 7.d4 ed4 8.Qd4=) 6...d5 7.bc6 bc6 (7...Nc6 8.c4 Qa5 9.c3 dc4 10.e4–/+) 8.e3 e4 (8...Qa5 9.Qd2+=) 9.Ne2 Bg4 (9...Qb6 10.Rb1+=) 10.h3 Be2 11.Be2 g6 (11...Nd7!?+=) 12.c4 Ne7 13.cd5 Nd5 (13...Qa5 14.Kf1 0-0 15.d6+–) 14.Bc4 (14.c4 Qa5 15.Kf1 Ne7+–) 14...0-0 (14...Qa5 15.Kf1 Qc5 16.Qd4 Qd4 17.Bd4+=) 15.Qg4 (15.Qd4!?+/–) 15...f5 16.Qf4 Qe7 (better is 16...Qa5 17.c3 Nd7=) 17.a4?? (17.Rd1!? Qe6 18.Bd5 cd5 19.c4+/–) 17...Rf7 (17...Qb4!? 18.c3 Qc4 19.Qe5–+) 18.Ba3?? (18.Qe5 Qe5 19.Be5 Nd7+=) 18...Qe8 (better is 18...Qf6 19.Bd5 Qa1 (19...cd5?! 20.0-0=) 20.Ke2 Qa3 (20...Qh1 21.Bf7 Kf7 22.Qc7 Nd7 23.Qd7 Kg8 24.Bb2 Kf8 25.Qg7 Ke8 26.Bf6 Qd1 27.Kd1 Rd8 28.Ke2 Rd2 29.Kd2 f4 30.Qe7) 21.Bf7 Kf7–+) 19.Bd5 (19.Qd6!?+/–) 19...cd5= 20.Qh6 (better is 20.Qd6!?=) 20...Qa4 21.Bb2?? (better is 21.0-0+=) 21...Qb4–+ 22.c3 Qb2 23.0-0 Qc3 24.Rac1 Qf6 (24...Qg7!? 25.Rc8 Rf8 26.Rf8 Qf8 27.Qf4–+) 25.Rc8 Rf8 26.Rfc1 (26.Rc7 Qh8–+) 26...Nd7 27.R8c7 Rf7 28.R1c6 Qg7 29.Rc8 Rc8 30.Rc8 Rf8 31.Qg7 Kg7 32.Rc7 Rf7 33.Ra7 Ne5 34.Ra5 Rd7 35.Kf1 Nc4 36.Ra2 h5 37.Ke2 g5 38.f3 (38.g3 Rb7–+) 38...f4 39.fe4 de4 40.Ra4 (40.ef4 gf4 41.Kf2 Rd3–+) 40...Rc7 (better is 40...Rd2!? 41.Ke1 Rc2 42.ef4 gf4 43.Ra7 Kf6 44.Rc7–+) 41.Ra2 (41.ef4 gf4 42.Ra2 Ne3–+) 41...Ne3 (41...Ne3 42.g3 Rc2 43.Rc2 Nc2 44.gf4 gf4–+) 0–1. pinecrest1981 – StillBill, Live Game Caissa's Web, 2004.

4.Nc3 d5 5.e3+=.

4.c4 Qb6 5.Nc3 a6 6.bc6 Qc6 (6...dc6 7.Rb1=) 7.e3+= Bd6 +=. pcmvr (2535) – eduardobandeira (2100), net–chess.com, 2006.

4.c4 g6 5.e3 Bg7 6.Nf3 Ne7 7.Qb3 Qb6 8.c5 Qc5 9.a4 cb5 10.ab5 b6 11.Bc4 Rf8 12.Ba3 Qc7 13.Qb4 d6 14.Nc3 Bb7 15.Rc1 Qd7 16.Qd6 Qd6 17.Bd6 Kd7 18.Be7 Ke7 19.Nd5 Kd7 20.Bb3 Rc8 21.0-0 Nc6? 22.bc6+– Bc6 23.Nb4 Bf3 24.gf3 b5 25.Bd5 Rab8 26.Ra1 Bf8 27.Rfb1 Bb4+/– 28.Rb4 Kd6 29.e4 Rc7 30.Ra5 Kc5 31.Rb1 Kd6 32.Kf1 Rb6 33.Ke2 a6 34.Rba1 Ra7 35.Ke3 Kc5 36.f4 Kd6? 37.fe5 fe5 38.f4 b4 39.fe5 Ke5 40.Bb3 Kd6 41.d4 Ke7 42.e5 Rc6 43.d5 Rc3+/– 44.Kd4 Rb3 45.Ra6 Ra6 46.Ra6 Rh3 47.Rb6 Rh2 48.Rb4?? Rh4–+ 49.Kc5 Rb4 50.Kb4 h5 51.d6? Kd7?? 52.Kc4? h4=+ 53.Kd4?? h3–+ 54.Kd5 h2 55.e6 Kd8 (55...Kd8–+) 0–1. elsh1403 – lathient (1775), internet, 2011.

4.c4 Nh6 5.e3 Nf7 6.Nf3 d5 7.bc6 Nc6 8.cd5 (8.Nc3 d4 9.ed4 ed4=) 8...Qd5 9.Nc3 Qd8 (9...Qa5 10.Qb3=) 10.Bc4 (10.d4 ed4 11.Nd4 Bd7=) 10...Nd6 11.Bb3 (11.Bd5 Ne7=) 11...Bd7 (11...e4 12.Nd4 Nd4 13.ed4=) 12.Nh4 (12.d4 e4 13.Nd2 f5=) 12...g6 13.d3 (13.0-0 Na5=) 13...Bg7 (13...Be7 14.0-0=) 14.0-0+= Qe7? (better is 14...Rc8+=) 15.Ba3+– Be6 16.Nb5! Bb3 (16...Nb5 17.Be7 Pinning (17.Be7 Deflection)). pcmvr (2225) – cyrilrussell (2165), net–chess.com, 2006.

4.e3 Qa5 5.Bc3 Qa4 6.d4 d6 7.Bd3 (7.Qh5 g6 8.Qe2 e4=) 7...Ne7 (7...cb5 8.Qh5 Kd8 9.Qf7=) 8.Qe2 Nd7 (8...Bf5 9.e4 ed4 10.ef5 dc3 11.Qh5 Kd8 12.Nc3=) 9.Nf3+= Nd5 10.Bd2 (10.0-0 Be7+=) 10...N7b6 (10...Be7 11.e4 Nb4 12.Bb4 Qb4 13.c3=) 11.0-0+= Bg4 12.h3 (12.c4 Bf3 13.gf3 Nb4+=) 12...Bf3 13.Qf3 0-0-0 (13...cb5 14.Be4 Ne7+/–) 14.bc6+/– Qc6 (14...bc6 15.Nc3 Nc3 16.Bc3+–) 15.Be4+– Qb5?? (better is 15...Qc4+–) 16.a4! Qb2 (16...Qa4 17.Ra4) 17.Ra3 (17.Bd5?! Qa1 18.Bb7 Kb8+=) 17...ed4 (17...Rd7 18.Bd5 Nd5 19.Qd5+–) 18.Rb3 (18.Rb3 Qa2 19.Bd5 Qa4 20.Bb7 Kd7 21.Ra3+–) 1–0. Hasek,Frantisek – Valica,Slavo, TT–16 ETC, 2005.

4.e3 Ne7 5.c4 (5.d4 ed4 6.Bd4 Nf5=) 5...c5 (5...cb5 6.cb5 d5 7.d4=) 6.Nf3 (6.d4 d6+=) 6...d5= 7.cd5 (7.d4 cd4 8.ed4 e4=) 7...Qd5 (7...e4!? 8.d6 Qd6+=) 8.Nc3+= Qd6 (8...Qe6 9.Qa4+=) 9.a4 (9.Bc4 Bf5+=) 9...Be6 (9...Bf5 10.d4 cd4 11.ed4=) 10.Ba3 (10.Ne4 Qc7+=) 10...Nd7= 11.Ne4 Qc7 (11...Qb6 12.Rc1 Ng6 13.Qc2=) 12.Qc2 Increases the pressure on c5 (12.Rc1 Nd5=) 12...Nd5 (12...f5 13.Neg5 Bg8 14.Bc4=) 13.Bc4 (13.Rc1 Qa5=) 13...Qa5 (13...N7b6 14.Be2=) 14.0-0+= Nb4?? (14...Rc8 15.d3+=) 15.Qb3 (better is 15.Bb4 Qb4 16.Be6+–) 15...Bc4 16.Qc4 Qa4? (16...Be7+/–) 17.Bb4?? (better is 17.Rfb1!? Qc2 18.Rb4 Qc4 19.Rc4 a5+–) 17...Qb4 18.Qb4?? (18.Qe6 Kd8 19.Nc3+=) 18...cb4–/+ 19.Rfc1 (19.d4 a5 20.ba6 ba6–/+) 19...Be7 (19...f5 20.Ng3–/+) 20.Rc7 Nc5?? (better is 20...a5–/+) 21.d4?? (better is 21.Nc5 Bd6 22.Ne6 Bc7 23.Nc7 Kf7 24.Na8 Ra8 25.Rb1+–) 21...Ne4–+ 22.b6 (22.Rb7 b3 23.de5 b2–+) 22...a5 23.de5 (23.Rb7 Nc3 24.Ra7 Rb8 25.R1a5 ed4 26.Nd4 b3+=) 23...Kf7 24.Rb7 Nc5 Black prepares a4 (24...Rab8!? 25.Ra7 Rb6 26.ef6 Kf6 27.Ne5–+) 25.Rc7 a4 (25...Rhb8 26.Nd4 Rb7 27.Nf5–+) 26.Nd4 b3 (better is 26...Rac8!? 27.Ra7 fe5–+) 27.Nc6–/+ Rhe8 28.Ne7 (28.ef6!? b2 29.Rd1–+) 28...Re7–+ 29.Rc5 b2 (worse is 29...fe5 30.Rb5–/+) 30.Rb1 a3 (30...a3 31.Rb5 a2 32.R5b2 a1Q–+) 0–1. gtate (1955) – jcekota (2100), net–chess.com, 2006.

4.e4 (--> 1.b4 e5 2.Bb2 f6 3.e4 c6 4.b5).

5.e3 Qb6 6.Nf3 cb5 7.ab5 d5 8.c4 Be6 9.Qb3 Ne7 10.d4 e4 11.c5 Qc7 12.Nfd2 b6 13.c6 Qa7 14.Ne4 Nf5 15.Ng3 a4 16.Qc2 Bb4 17.Bc3 Bc3 18.Nc3 Qc7 19.Nf5 0-0 20.Bd3 a3 21.0-0 g6 22.Ng3 f5 23.h4 h5 24.Qe2 Kf7 25.Nh5 gh5 26.Qh5 Ke7 27.Qg5 Ke8 28.Qg6 Qf7 29.Qf7 Rf7 30.Ra2 Kf8 31.Rfa1 Rfa7 32.Nb1 Rh7 33.g3 Raa7 34.Ra3 Ra5 35.Ra5 ba5 36.Ra5 Rc7 37.Ra8 Rc8 38.Nc3 Kg7 39.Na4 Nc6 40.Rc8 Bc8 41.bc6 Kg6 42.Nb6 Be6 43.c7 Kh5 44.Nd5 Bc8 45.Ne7 Bd7 46.Bf5 Bf5 1–0. phildo (1820) – sbmr, gameknot.com, 2013.

5.e4 d5 6.ed5 Qd5 (6...cd5 7.Nf3=) 7.Nc3+= Qd8 (7...Qd6 8.Ba3 c5 9.Bc4+=) 8.Bc4= Bc5 (8...Bf5 9.Qh5 Bg6 10.Qd1=) 9.Ne4+= Bb6 (9...Bb4 10.Qh5 g6 11.Qf3+=) 10.Bg8= Rg8 11.Qh5 Kf8? (better is 11...Ke7+/–) 12.Ba3+– c5 13.Nc5 (13.Qh7?! Qd4 14.c3 Qd5+/–; 13.Bc5?! Bc5 14.Nc5 Qd4=) 13...Ke7 (13...Qe7 14.Nd7!! Bd7 15.Be7 Ke7 16.Qh7 Be6+–) 14.Nb7 Kd7 (14...Ke6 15.Nd8 Rd8 16.Qh7 Ra7+–) 15.Qf7 1–0. spereira (1910) – super knight (1610), internet, 2005.

5.c4 ab5 6.ab5 Ra1 7.Ba1 d5 8.e3 Ne7 (8...Bf5 9.bc6 Nc6 10.cd5 Qd5 11.Nc3=) 9.Be2 (9.d4 e4=) 9...Bf5 (9...Nf5 10.bc6 Nc6 11.Nc3 dc4 12.Bc4+=) 10.Nc3 (10.c5 b6 11.d4 Ng6 12.de5 Ne5 (worse is 12...bc5 13.ef6 gf6 14.Nf3=; worse is 12...Bc5 13.ef6 gf6 14.Nf3+=) 13.Be5 fe5 14.bc6 bc5+= (worse is 14...Nc6 15.Qa4 Bd7 16.Bb5+=)) 10...d4 11.Na4 Qa5 (11...d3 12.Bh5 g6 13.Bf3+=) 12.Nc5 (12.ed4!? cb5 13.cb5+=) 12...b6 (12...de3 13.fe3 cb5 14.cb5–/+) 13.Nb7= Qb4 (13...Qa3 14.ed4 ed4 15.c5 bc5 16.Nd6 Kd7 17.Nf5 Nf5 18.Bg4+=) 14.ed4 Bc8 15.Bc3 Qa3 16.bc6 (better is 16.Bh5!? Kd7 17.de5 Bb7 18.ef6 gf6 19.Qg4 (19.Bf6?! Rg8=) 19...Kc7 20.Bf6+/–) 16...Nbc6 17.d5 Nd4 18.Bd4 (18.Bh5 g6 19.d6–+) 18...ed4–/+ 19.d6 (better is 19.Nf3–/+) 19...Ng6 (19...Nc6 20.Qb1 Bb7 21.Bh5 g6 22.Bf3 Bd6 23.Ne2–+) 20.c5 (better is 20.Bf3!? Ne5 21.Qb1+=) 20...Bb7–/+ 21.Bb5 Kd8 22.c6 Bc6 23.Bc6 Bd6 (23...Qc5 24.Be4 f5 25.Bb1–/+) 24.Nf3 (better is 24.Ne2!? Qb2 25.0-0–/+) 24...Qc5–+ 25.Nd4? (better is 25.Bb7 Re8 26.Kf1–+) 25...Qd4 26.0-0 (26.Qa4 Qa4 27.Ba4 Ke7–+) 26...Qc5 (better is 26...Bh2!? 27.Kh2 Qd6 28.Kg1 Qc6 29.Qg4–+) 27.Bf3 (27.Qa4 Qa5–+) 27...Re8 28.Qa1 (28.d4 Qc3–+) 28...Ke7 (28...Qe5!? 29.g3 Qa1 30.Ra1–+) 29.Re1 Ne5?? (better is 29...Kf8 30.Re8 Ke8–+) 30.d4+= Qc7 (30...Qb4 31.Bc6 Rd8 32.Re4–/+) 31.de5 (31.Bh5 Rd8+=) 31...Be5+= 32.Re5? (better is 32.Qb1 Kf8 33.h3+=) 32...Qe5–+ 33.Qa7 Kf8 34.Qa3?! (34.g3–+) 34...Qe7 (34...Qc5 35.Qc5 bc5 36.Kf1–+) 35.Qe7 0–1. DEFFM – GuestDDWH, freechess.org, 2016.

5.c4 ab5 6.cb5 b6 7.e3 Ne7 8.Qh5 Ng6?? 9.Bd3+– cb5? 10.Bg6 Ke7 11.Bc2 ba4 12.Ra4 Ra4 13.Ba4 Ba6 14.Ne2 d5 15.Ba3 Ke6 16.Qh3 Kf7 17.0-0?? Ba3 18.Na3 Qd6?? 19.Re1?? Qa3=+ 20.Nc3 Bc4 21.Bd7 Nd7 22.Qd7 Qe7 23.Qc6 b5 24.Nd5 Bd5 25.Qd5+/– Qe6 26.Qb5 Rd8 27.Qe2 g6 28.h3 Kg7 29.Rc1 Qd5 30.Rc7 Kh6?? 31.Rc2 Qd3+/– 32.Qd3 Rd3 33.Kf1 Kg5 34.Ke2 Rd7 35.g3 h5 36.Rc4 f5 37.d4 ed4 38.ed4 Kf6 39.Rc6 Kf7 40.Ke3 g5 41.f4 g4 42.hg4 hg4 43.Rc5 Kf6 44.d5 Re7 45.Kd4 Rd7? 46.Rc6+– Ke7 47.Ke5 Ra7 48.Kf5 Ra5 49.Ke4 Ra4 50.Ke5 Ra3 51.Rc7 Kd8 52.d6 Rg3 0–1. elsh1403 – waska56, internet, 2011.

5.c4 d5 6.e3 d4 (6...ab5 7.ab5 Ra1 8.Ba1=) 7.ed4= ed4 8.Nf3 (8.Bd3 Nh6=) 8...c5 9.Be2? (9.Bd3 Qe7 10.Qe2 Qe2 11.Be2 Bd6=) 9...b6?? (better is 9...d3–+) 10.d3 (10.Qc2 Bb7=) 10...Bb7 11.0-0 Bd6 12.Re1 Ne7 13.Nh4 (13.Nbd2 0-0=) 13...0-0 (13...Qc7 14.h3+=) 14.Bf3= Bf3 15.Qf3 Nd7 16.Nd2 Ne5 17.Qe4 (17.Qe2 Re8+=) 17...f5 18.Qe2 f4 (better is 18...Nd5 19.Ng6 hg6 20.cd5 ab5 21.ab5 Ra1 22.Ba1 Re8–/+) 19.Qg4?? (better is 19.Ndf3 Nf7 20.Qe6=) 19...Nd3 (better is 19...Ng4 20.Nhf3 Ng6–+) 20.Qe6–/+ Kh8 21.Bd4?? (better is 21.Reb1–/+) 21...Ne1 (21...cd4!? 22.Ne4 Ne1 23.Nd6–+) 22.Bg7 Kg7 23.Re1 Re8 (better is 23...ab5!? 24.ab5 Rf6 25.Qg4 Kh8 26.Ne4–+) 24.Ndf3 Ra7 (24...Bc7 25.Ng5 Rf8 26.Qe4+/– (worse is 26.Qe7 Qe7 27.Re7 Kf6 28.Rc7 Kg5 29.Nf3 Kf5–/+)) 25.Ng5–/+ Ng6?? (better is 25...Nc8 26.Qe8 Qg5 27.Qc8 Qh4+=) 26.Nf5+/– Kf8 27.Qg8?? (better is 27.Nd6 Re6 28.Ne6 Ke7 29.Nd8 Kd8 30.a5 ab5 31.ab6+–) 27...Kg8–+ 28.Nh6 Kg7 29.Re8 Qg5 0–1. GuestSWDD – GuestDHHL, freechess.org, 2017.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.Nc3 (8.Bc3 Qa4=) 8...d5 9.Nf3 Bg4 10.Be2 e4 (10...Bb4 11.Bb2=) 11.Nd4+= Be2 12.Nce2 Bc5 (12...Ne7 13.0-0+=) 13.Ne6+/– Bf8 14.0-0 Ne7 15.N2f4 Kf7 (15...cb5? 16.Bf6! gf6 17.Qh5 Kd7 18.Qf7 Qd2 19.Nf8 Rf8 20.Qf8+–) 16.c4! g5?? (16...dc4 17.Qc2 Double attack (17.Qc2 Decoy)) 17.Qh5+– Kg8 18.Qe8 Nd7 19.Nh5 Qd2 20.Nf6 Nf6 21.Qf8 1–0. GuestTLPB – SRBVx, freechess.org, 2017.

5.e3 ab5 6.ab5 Ra1 7.Ba1 d5 8.d4 e4 9.c4=.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Ne7 8.c4 (8.d4 e4=) 8...Ng6 (8...cb5 9.cb5 d5 10.d4=) 9.Bd3 (9.d4 cb5 10.cb5 d5=) 9...f5 (better is 9...d5+=) 10.Bf5+/– (10.Bf5 d6 11.Bg6 hg6 12.bc6 bc6 13.d4+/–) 1–0. DEFFM – GuestKLXV, freechess.org, 2016.

5.e4 ab5 6.ab5 Ra1 7.Ba1 Qa5 (7...d5 8.ed5 cd5 9.d4 Bb4 10.c3=) 8.Bc3+= Qa4 9.Bd3 (9.d4 c5 10.de5 Qe4 11.Ne2 d5+=) 9...c5 10.Nf3 c4 11.Be2 Qb5 12.0-0 (12.d4 cd3 13.Bd3 Qc6=) 12...Bc5 (12...d5!? 13.d3 de4 14.de4 Qc6+=) 13.d4+= ed4 14.Nd4 Bd4 (14...Qa6 15.Re1+=) 15.Bd4 Qa6 16.Bc5 b5 17.Nc3 Bb7? (17...Qc6 18.Qd6 Qd6 19.Bd6 b4 20.Bb4 Nc6+–) 18.Bg4 (better is 18.Nb5 Qb5 19.Qd6 Qc5 20.Qc5+–) 18...Qc6 19.Bb4 (19.Bd6!? Na6 20.Bf3+/–) 19...Na6= 20.Nd5 Nb4 21.Nb4 Qc8 (21...Qc7 22.Nd5 Qe5 23.f4+/–) 22.Qd6 (better is 22.Re1=) 22...Be4?? (better is 22...Nh6 23.Bh5 Kd8=) 23.Re1+– Qb7 24.f3 Ne7 (24...g6+–) 25.Re4 Qa7 26.Kf1 Kf7 (26...0-0 27.Re7 Qa1 28.Re1 Qa8 29.Bd7 Qb8+–) 27.Qe7 Kg6 28.Bh3 h5 29.Bf5! Kf5 30.Qg7 Qa1 31.Kf2 Qa7 32.Kf1 Qa1 33.Ke2 Qa8 34.g4 1–0. dixi82 – SIRMO, ChessWorld.net, 2006.

5.a5 Qa5?? 6.Ra5+– a6 7.c3 (7.Nc3!? Bb4 8.Ra1 Bc3 9.Bc3 Nc6+–) 7...Nc6 8.Ra2 d5 9.Na3 b4 (9...Ra7 10.Nc2+–) 10.Nb5! Kd8 (10...ab5 11.Ra8 Pinning (11.Ra8 Deflection; 11.Ra8 Clearance)) 11.cb4 (11.Qb3 Be6 12.e4 Bf7 13.ed5 Rc8+–) 11...Rb8 (11...Bf5 12.Ra1+–) 12.Nc3 Be6 (12...Nb4 13.Ra1 Bf5 14.Rc1+–) 13.Qb3 (13.b5!? ab5 14.Nb5 Nb4+–) 13...Nd4 14.Qa4 Bd7 (14...Bb4 15.e3 (15.Qb4?! Nc2 16.Kd1 Nb4+=) 15...Nc6 16.Qb3+–) 15.Qa5 (15.b5 Bb5 16.Nb5 Nb5 17.Qa5 Nc7+–) 15...Ke8 (15...b6 16.Qa6 Nc2 17.Kd1 Nb4 18.Qa7+–) 16.Qd5 (better is 16.Nd5!? Bc6 17.Bd4 ed4+–) 16...Bb4 (16...Nc2 17.Kd1 Nb4 18.Qb3 Na2 19.Qa2+–) 17.e3 (better is 17.Qc4 Rc8 18.Qd3 Be6+–) 17...Nc2 (17...Ne7 18.Qe4 Bf5 19.Qh4 Nc2 20.Kd1+–) 18.Kd1 Ne7 (18...Bf5 19.d3 Bg6 20.Qb3+–) 19.Qb3 Bf5 20.Bc4 (20.e4!? Bc3 21.Bc3 Be4 22.Qa4 Bc6 23.Qc2 Bd5+–) 20...Rf8 (20...Bc5 21.g4! Bg6 22.Na4+–) 21.e4 (21.Be6 Bg6+–) 21...Bc3 22.Bc3 Be4 23.Ra6! Bg2 (23...ba6 24.Qa4 Double attack (24.Qb8 Pinning; 24.Qb8 Deflection; 24.Qb8 Decoy)) 24.Bb5 Nc6 25.Qe6 Kd8 26.Qd6 Kc8 27.Qf8 Kc7 28.Qg7 Kc8 29.Qg2 ba6 30.Qc6 1–0. ifairclough – quikeagle, net–chess.com, 2002.

5.a5 Nc6 –/+.

5.ab5= a5 6.ba6 ba6= 7.d4 (7.e4 Bc5 8.d4 Qb6 9.dc5 Qb2=) 7...Qb6 (7...ed4 8.Bd4 Nc6 9.Nf3=) 8.Bc3 Nc6 9.e3 Bb7 10.Nf3 e4 11.Nfd2 Nb4 12.Be2 d5 13.0-0 Nh6 14.Nb3 Bd6 15.Bh5 (15.f3 0-0=) 15...g6 16.Be2 Nf5 (16...0-0 17.Qd2 a5 18.Nc5=) 17.Nc5+= Rf8 18.Bb4 Qb4 19.Nb7 Qb7 20.c4 dc4 21.Bc4 (21.Qa4!? Kd8 22.Bc4=) 21...Bh2+= 22.Kh1 Bd6 (22...Bc7 23.Qa4 Kd8 24.Nc3+=) 23.Nc3= Qg7 Threatening mate... how? 24.Qa4 Increasing the pressure on the isolated pawn on a6 (24.Ba6?? Qh6 25.Qh5 Qh5 26.Kg1 Qh2; 24.Ra6?? Qh6 25.Qh5 Qh5 26.Kg1 Qh2) 24...Kd8 25.Qa5 Kd7 26.g3 Qh6 (26...Bg3!? 27.fg3 Qh6 28.Kg2 Ne3 (28...Qe3?? 29.Qd5 Kc7 30.Qf5 Qd2 31.Rf2 gf5 32.Nd5 Kd6 33.Rd2+–) 29.Kg1 Nf1 (worse is 29...Nc4 30.Qa4 Kd8 31.Qc4+=) 30.Qd5 Kc7 31.Qa5 Kd7 32.Qd5 Kc7 33.Qa5 Kd7=) 27.Kg2+= Ng3 28.Qa4 Kd8 29.Qc6 (29.fg3 Qe3 30.Ne2 Qg5+–) 29...Nf5 The mate threat is Qh2 30.Qa8 Kd7 31.Bb5! (31.Bb5 ab5 32.Qb7 Bc7 33.Qb5 Ke6 34.Qc6 Kf7 35.Qc7 Kg8 36.Rh1 Nh4 37.Kf1+–) 1–0. Fehr,Wolfgang – Algaba,Pedro, corr SOK–90–66, 1990.

5.ab5 a6 6.e3 b6?? 7.c4 (better 7.Be5 a5 8.Nc3+-) 7...Bb7= 8.Nf3 ab5 9.cb5 (9.Ra8 Ba8 10.cb5 Qc7+=) 9...Ra1= 10.Ba1 d5 11.Be2 e4 (11...Bd6!?=) 12.Nd4+= Ne7 13.Ne6 Qd7 14.Nf8 Kf8 15.0-0 Kf7 16.Nc3 Rf8 17.Qb3 Kg8 (17...Qe6 18.f3 ef3 19.Bf3+=) 18.f3 (18.Ne4!? Qe6 19.d3+-) 18...ef3+- 19.Bf3 g5? (19...Qe6!?+-) 20.e4 (20.Ne4 Qe6 21.Ng5 Qf5+-) 20...Rd8? (better 20...Qd6+-) 21.ed5 Nd5 The passed pawn on d2 will become decisive later (21...Kf8 22.Ne4 Qd5 23.Qb4+-) 22.Nd5 (better 22.Ne4 Rf8 23.Nf6 Rf6 24.Bf6+-) 22...Bd5 23.Bd5 (better 23.Qe3!? Bf7 24.Bf6 Qd2 25.Qb6+-) 23...Qd5+- 24.Qd5 (better 24.Qc2!? Qc5 25.Qc5 bc5 26.Bf6 Rd2 27.Rf5+- (27.Bg5?! Rb2=)) 24...Rd5= 25.Bf6 Rb5 26.Bg5?? (better 26.g4=) 26...Rg5-+ 27.Rb1 Nd7 28.g3 (28.Kf2 Kf7-+) 28...Rd5 29.Rb2 b5 30.Kf2 Nc5 (30...Ne5 31.Ke2-+) 31.Ke3 Re5 32.Kd4 Rh5 (32...Nd7 33.Kc3-+) 33.h4 (33.Rb5 Ne6 34.Kc4 Rb5 35.Kb5 Nd4 36.Kc4 Nf3-+) 33...Kf7 34.Rb5 White launches an attack 34...Ne6 35.Kc4 Rb5 36.Kb5 Nd4 37.Kc5 Ne2 (better 37...Nb3!? 38.Kd5 Nd2 39.Ke5-+) 38.g4 Ng3 (better 38...Ng1!?-+) 39.d4=+ Kg6 (39...Ke7!? 40.Kc6 Ne2=+) 40.d5= Ne4 41.Kc6 Kh6?? (better 41...Nf2 42.g5 Nd3=) 42.d6+- Nd6 43.Kd6 Kg6 44.Ke7 Kg7 45.Ke6 Kg6 46.Ke5 Kg7 47.Kf5 h6?? (better 47...Kf7+-) 48.Ke6 Kg6 (48...h5 49.g5 Kg6 50.Kd6+-) 49.Ke7 Kg7 (49...h5 50.g5 Kg7+-) 50.Ke6 (better 50.h5 Kg8+-) 50...Kg6 51.Kd5 (better 51.h5 Kg5 52.Kf7 Kf4+-) 51...Kg7 52.Ke5 (better 52.Kc6 Kf7 53.Kd7+-) 52...Kg6?? (better 52...Kf7 53.Kd4 Kf6+-) 53.Ke6+- Kg7 54.Kf5 White intends g5 (54.h5 Kh8+-) 54...Kh7 55.g5 (better 55.Kf6+-) 55…Kg7?? (55...Kg7 56.g6 Kf8+-; better 55...hg5 56.h5 Kg7=). RichardSommer - Cihangir33, lichess.org, 2020.

5.ab5= d5 6.Nc3=.

5.ab5= d5 6.d4 e4 7.e3=.

5.ab5 d6 6.e3 d5 7.d4 e4 8.c4+=.

5.ab5 d6 6.e3 Bd7 7.c4 Qe7 (7...Be6 8.Nc3+=) 8.Nc3+/– Be6 9.Nf3 Nd7 10.d4 0-0-0? (better is 10...Nb6 11.d5 Bg4+/–) 11.Ra7+– Kb8 (11...Nb6+–) 12.Qa1 Nb6 (12...e4 13.Qa5 Kc8 14.Na4+–) 13.d5 Bd7 (13...Bc8 14.Qa5 Kc7 15.Bd3+–) 14.Be2 (14.Qa5 Kc7+–) 14...Nh6 (14...Nc8 15.Ra8 Kc7 16.Qa5 b6+–) 15.Qa5 Kc7 16.Na4 Ra8 (16...Rb8+–) 17.Qb6 Kb8 18.Qb7 1–0. GuestGKFL – GuestXZZT, freechess.org, 2017.

5.ab5 d6 6.e3 Bd7 7.d4 Qb6 8.c4 Ne7+=.

5.ab5 d6 6.e3 Bd7 7.Qh5 g6 8.Qd1 (8.Qf3 Qc7+=) 8...a6 (8...d5 9.Nf3=) 9.c4 (9.Nc3 Be6+=) 9...Qc8 (9...Bg7 10.d4+=) 10.Nc3+= Ne7 (10...Be6 11.Nd5 Nd7 12.Qf3+=) 11.Nf3 Nf5? (better is 11...Bg7+=) 12.Nd5+– Be7?? (12...Qd8 13.b6 Nc6 14.Nc7 Kf7+–) 13.b6 (13.Nb6 Qd8 14.Na8 ab5 15.cb5 d5+–) 13...Qc6?? (better is 13...Bd8+/–) 14.Nc7+– Kd8 (14...Kf7 15.Na8 a5+–) 15.Nd5 (better is 15.Na8 e4 16.Nd4 Nd4 17.Bd4+–) 15...Be6 16.Ne7?? (better is 16.e4 Ng7 17.Nc7 Qb6 18.Na8 Qb2 19.Rb1+–) 16...Ke7= 17.Qb3 (17.Qc2 Qb6 18.e4 Ng7=) 17...Nd7 18.Be2 (18.d4 Qb6 19.Qa3 Kd8=) 18...Nb6 c4 draws heavy fire (better is 18...Qb6 19.Qc2 d5 20.cd5 Bd5=) 19.c5?? (better is 19.d3=) 19...Bb3–+ 20.cd6 (20.cb6 Qb6 21.0-0 Rhc8–+) 20...Nd6 21.Rc1 (21.0-0 Rhc8–+) 21...Qa4 (21...Qd5 22.Ba3–+) 22.0-0 (22.Ra1 Qd7–+) 22...Rhc8 (22...e4 23.Nd4 Bc4 24.Bc4 Nbc4 25.Bc3–+) 23.Ra1 Qc4! 24.Bc4 Bc4 (better is 24...Nbc4 25.Bc3–+) 25.Ba3 (25.Rfc1 a5–+) 25...Bf1 26.Kf1 Nbc4 27.Bb4 (27.Bd6 Nd6 28.d4 e4–+) 27...a5 28.Bc3 (28.Bd6 Nd6 29.d4 e4–+) 28...b5 29.d4 (29.Rd1 b4 30.Ba1 e4–+) 29...b4 (better is 29...e4!? 30.Nd2 Ne3 31.fe3 Rc3 32.Ke2–+) 30.de5 bc3 31.ed6 Kd6 (31...Nd6 32.Ke2–+) 32.Rd1 (32.Rc1 Ne5 33.Nd4 Rab8–+) 32...Kc5 33.Rc1 Nd2! 34.Nd2 Rd8 (better is 34...Kb4 35.Nf3 a4–+) 35.Nb1 (35.Rc3 Kd5–+) 35...Rd3 (35...Kb4 36.Nc3 a4 37.Ne4–+) 36.Ke2 Kc4?? (better is 36...Rad8 37.Nc3 Kb4–+) 37.Na3+= Kb3 38.Kd3 Ka3 39.Rc3 Kb4 40.Rc7 h5 41.Kd4 (41.Rc6 Rf8+=) 41...a4–/+ 42.Rb7 Ka5 1–0. DEFFM – GuestLDCZ, freechess.org, 2016.

5.ab5 e5 6.e3 d6 7.c4 a6 8.Nc3 Be6 9.Nf3 d5 (9...Ne7 10.d4+=) 10.cd5+/– Bd5 11.Nd5 Qd5 12.Qc2 e4?? (better is 12...Qd7!?+/–) 13.Nd4 (better is 13.Qc8 Qd8 14.Qb7 ef3 15.Qa8 fg2 16.Qg2+–) 13...Ne7 14.Bc4 Qg5? (14...Qd6+–) 15.Qe4 Ra7 (15...Qc5 16.Qb7 Qa7+–) 16.Ne6 f5 (16...Qg6 17.Qd4 Nd7 18.Qa7 Nc8 19.Qb7 Ncb6 20.Nc7 Kd8 21.ba6 Qc2+–) 17.Nc7 Kd8 18.Ne6 (18.Ne6 Ke8 19.Qd4+–) 1–0. GuestTPLH – GuestGMVF, freechess.org, 2017.

5.ab5 Ne7 6.e3 Nd5? 7.c4 (7.Be5 d6 8.Bd4 Be6+–) 7...Nc7 (7...Nb4 8.Nc3+/–) 8.Be2 (8.Nc3 Bc5+–) 8...Bb4 9.Qb3 Be7 10.Bh5 (10.Nc3 d6+/–) 10...g6+/– 11.Be2 Ne6 12.Nc3 0-0 13.Nd5 (13.Nf3 d6+/–) 13...Nc5 14.Qc2 (worse is 14.Ne7 Qe7 15.Qa3 e4+=) 14...d6 15.Nf3 Bf5 16.d3 Nbd7 (16...e4 17.de4 Be4 18.Qd1+/–) 17.e4 Be6 18.Ne7 (18.d4!? ed4 19.Nd4+/–) 18...Qe7+= 19.0-0 f5 20.Nd2 Qg5 21.f4 ef4 22.Nf3 Qe7 23.e5 Rac8? (better is 23...de5!? 24.Ne5 Ne5 25.Be5 g5+=) 24.ed6+/– Qd6 25.Qc3 (worse is 25.Ra7 Qb6 26.Ra3 Nd3 27.Bd4 N3c5=) 25...Nf6 26.Ne5 g5 27.Ra7 Rfd8?? (better is 27...Qb6 28.Qa5 Qa5 29.Ra5 Ng4 30.Ng4 fg4+/–) 28.Bf3 (better is 28.Ng4! fg4 29.Qf6 Rd7 30.Qg5 Kf8 31.Bg4 Rf7+–) 28...Nd3?? (28...Qb6 29.Kh1 Rf8+– (29...Qa7 30.Nc6 bc6 31.Qf6 Nd3 32.Qh8 Kf7 33.Qg7 Ke8 34.Qa7+–)) 29.Nd3+– Ne8 (29...Bc4 30.Qf6 Qf6 31.Bf6 Rd3+–) 30.Qh8 Kf7 31.Rb7 (31.Bh5 Ke7 32.Bf6 Kd7 33.Qh7 Ng7 34.Qg7 Bf7 35.Qf7 Qe7 36.Qe7) 31...Rd7 32.Ne5 1–0. GuestJCLC – GuestNLGB, freechess.org, 2017.

5.ab5 Ne7 6.e4 Qb6 7.Nf3 d5 8.ed5 Nd5 9.c4 Nc7 10.Nc3 Bg4 11.Be2 Bc5 12.0-0 0-0 13.Na4 Qd6 14.Nc5 Qc5 15.Ba3 1–0. rcm06 (1930) – tomekd, gameknot.com, 2012.

6.Nc3 d5? 7.e3?? (better 7.Nd5 Qd8 8.b6+-) 7...Be6 8.Nf3 Bb4 9.Be2 Nd7 10.0-0 Ne7 11.Na4 Qc7 12.c3 Bd6 13.Ba3 Ba3 14.Ra3 0-0 15.d3 (15.Qb3 Nf5=) 15...b6 (15...a6 16.ba6 Ra6 17.Qb3=+) 16.Qa1 Ng6 (16...a6 17.Nb2 a5 18.c4=) 17.Rc1 (17.Nb2 Rfd8+=) 17...e4 (17...a5!?=) 18.de4 de4 19.Nd4 Bf7 20.Nc6 Nde5 21.Nd4 (21.Ne5 Ne5 22.c4 Rfd8+= (22...Bc4? 23.Nb2+-; 22...Nc4? 23.Nb2+-)) 21...Bc4 (21...Nd7 22.Rd1+=) 22.Bc4 Nc4 23.Ne6 Qe5 (23...Qd6 24.Nf8 Qa3 25.Qa3 Na3 26.Ng6 hg6=+) 24.Nf8+- Na3? (better 24...Kf8 25.Rb3 Qg5+-) 25.Ng6+- (25.Qa3?! Rf8 26.Qb3 Kh8+=) 25...hg6 26.Qa3 Kf7 (26...Qb5 27.c4 Qc6+-) 27.Qb3 (better 27.Nb6 Rd8 28.Qa7 Kg8+-) 27...Ke7 28.c4 Rh8 29.g3 (29.h3 Rd8+-) 29...f5 (29...Qe6 30.Qc2+-) 30.c5 g5 (30...Rc8 31.Qa3 Kf7 32.cb6 Rc1 33.Qc1 ab6 34.Qc4 Qe6 35.Nb6 Qc4 36.Nc4+-) 31.cb6 ab6 32.Nb6 f4 (32...Rd8 33.Nc8 Rc8 34.Rc8 f4+-) 33.Nd5 Kd6 34.ef4 (34.Qa3 Ke6 35.Qe7 Kf5 36.g4 Kg4 37.Qe5 Rh2 38.ef4 gf4 39.Kh2 g5 40.Nf6 Kh4 41.Rc8 e3 42.Rh8) 34...gf4 (34...Qd5 35.Rd1 Qd1 36.Qd1 Kc5 37.fg5 Ra8+-) 35.Nf4 g5 36.Ng6 (36.Rc6 Ke7 37.Ng6 Kd8 38.Ne5 e3 39.Qd3 Ke8 40.Qd7 Kf8 41.Rc8) 36...Qc5 37.Rc5 (37.Qd1 Kc7 38.Rc5 Kb6 39.Rc6 Kb5 40.Qd5 Kb4 41.Qc5 Ka4 42.Rb6 Rh2 43.Qb4) 37...Kc5+- 38.Nh8 (38.Nh8 Kb6 39.h4+-) 1-0. aravind555 – cesariobelo, lichess.org, 2018.

6.Nc3 Ne7 7.e4+=.

6.c4 Bc5 7.e3 f5? 8.Be5+- d6?? (better 8...Qg6+-) 9.Bg7 Nd7 (9...Nf6 10.Bh8 Qd8 11.Nc3+-) 10.Bh8 Ne7 (10...Ngf6 11.Ra4 a5 12.Bd3+-) 11.Qh5 Ng6 (11...Kd8 12.Bc3 Qc7 13.Qh7+-) 12.Qh7 (12.Nc3!? d5 13.Nd5 Qd6+-) 12...Ndf8 13.Be2 (13.Qh5 Qc7+-) 13...Be6?? (13...Nh7 14.Bc3 d5 15.d4-/+) 14.Bf6 (better 14.Qh5+-) 14...Nh7-/+ 15.Bh5? (better 15.Bc3 Qc7 16.d4-/+) 15...Nf6-+ 16.Bg6 Ke7 17.e4?? (17.Ne2-+) 17...fe4 (17...Bf2!? 18.Kd1 Bg1 19.ef5 Bc4 20.Nc3 Bh2 21.Re1 Kd8 22.Rh1-+) 18.Ne2 Bf2 19.Kd1 Bc4 20.Nbc3 d5 (20...Be2 21.Ke2 Bd4 22.Rhe1-+) 21.Kc2 (21.Bf5 d4 22.Ne4 Be2 23.Ke2 Qb5 24.Kd1 Qf5 25.Nf2 Qf2 26.Re1 Kd6-+) 21...d4 22.Ne4 (22.Be4 Ne4 23.Ra4 Nc3 24.Rc4 Ne2-+) 22...d3 23.Kc3 Ne4 (23...Rc8 24.Ra7 Bb5 25.Nc5 Rc5 26.Kb2 Ba6 27.Ka1 Ra5) 24.Be4 de2 25.Kc4 e1Q (25...Qc5 26.Kb3 Qb5 27.Ka3 Bc5 28.Ka2 Bd4 29.Ka3 Qb2 30.Ka4 a5 31.Bb7 Qb4) 26.Rhe1-+ Be1 (better 26...Rc8 27.Bc6 Be1 28.Re1 Kd6 29.Re8 Rc6 30.bc6 Qc6 31.Kd3 Qe8 32.g3-+) 27.Re1 Rc8 28.Kd3 Qb5 29.Ke3 Qb3 30.Kf2 Qb6 (30...Rf8 31.Bf3 Kf6 32.Re2-+) 31.Kf1 (31.Re3 Kd6-+) 31...Rf8 32.Bf3 Kd8 33.Re2 (33.Re3 a5-+) 33...Rf3 (better 33...Qd4 34.d3-+) 34.gf3 Qb1 35.Kf2 a5 36.h4 (36.f4-+) 36...a4 37.Re1 (37.Re3 Qb2 38.Rd3 Kc7 39.Rc3 Kb6-+) 37...Qb6 (37...Qe1! 38.Ke1 a3 39.Kf2-+) 38.Kg3 a3 39.h5 a2 40.h6 (40.f4 Qb1! 41.Rb1 ab1Q-+ (41...ab1N?? 42.h6 Nd2 43.h7+-; 41...ab1B?! 42.Kf2-/+)) 40...Qh6 41.Ra1 (41.Rf1 Qg5 42.Kh2 Qd2 43.Kg3 b5-+) 41...Qd2 (41...Qg7 42.Kf4 Qa1 43.Ke4 Qe1 44.Kf4 a1Q 45.d4 Qd4 46.Kf5 Qee5 47.Kg6 Qf6 48.Kh5 Qdh4) 42.Kg4 (42.Ra2 Qa2 43.Kf4-+) 42...Qd4 43.f4 Qa1 44.f5 (44.Kf5 Qb1 45.Kg5 a1Q 46.f5 Qg1 47.Kf4 Qad4 48.Kf3 Qgg4) 44...Qg1 45.Kf4 a1Q 46.f6 (46.Kf3 Qc3 47.Ke4 Qgd4) 46...Qgf1 (46...Qf6 47.Ke4 Qgd4) 47.Kg5 (47.Ke4 Qa4 48.Ke5 Qff4 49.Ke6 Qac4) 47...Qff6 (47...Qaf6 48.Kg4 Q1f3) 48.Kg4 b5 (48...Qg1 49.Kh5 Qgg6) 49.Kg3 b4 (49...Qg1 50.Kh3 Qh8) 50.Kg2 b3 (50...Qaf1 51.Kg3 Q6f4) 51.Kh3 (51.Kg3 Qg1 52.Kh3 Qh8) 51...b2 (51...Qf3 52.Kh4 Qaf6) 52.Kh2 (52.Kg2 Qaf1 53.Kg3 Q6f4) 52...b1Q (52...Qf4 53.Kg2 Qaf1) 53.Kh3 Qh6 (53...Qh1 54.Kg3 Qag1) 54.Kg4 (54.Kg2 Qg1 55.Kf3 Qhe3) 54...Qg1 55.Kf3 Qaf1 (55...Qhe3) 56.Ke4 Qe6 0-1. aravind555 – KorkiKor, lichess.org, 2019.

6.e3 a6 7.c4 a5 8.Nf3 Bb4 9.Be2 Ne7 10.0-0 0-0 (10...d5 11.Bc3 Bc3 12.Nc3+=) 11.d4+/– ed4 12.Nd4 d5 (12...d6 13.Bc3 Bc3 14.Nc3+/–) 13.cd5 Nd5?? (better is 13...Qc7+/–) 14.Bc4+– Qd6 15.e4 Kh8 16.ed5 Nd7 17.Ne6 Re8 (17...Rg8 18.Qh5 Nf8 19.Qf5+–) 18.Qh5 Re6 (18...Rg8 19.Bd3 g6 20.Qh4+–) 19.de6 Ne5 (19...Nf8 20.Qe8 b6 21.Ba3 Be6 22.Qa8 Bc4 23.Bb4 ab4 24.Qc6+–) 20.Rd1 Qc5 (20...Qe7 21.Be5 fe5 22.Qe5 h6+–) 21.Rd8 (21.Rd8 Qf8 22.Rf8 Bf8 23.Ra5+–) 1–0. GuestNFTH – GuestNFZH, freechess.org, 2017.

6.e3 a6 7.c4 d6 8.d4+=.

6.e3 a6 7.c4 Nh6 8.Be2 (8.Nc3 Bc5+=) 8...Bc5 9.Bh5 g6 10.Be2 d6 11.Nc3 Be6 12.Bf3 0-0 13.Bd5 Re8 14.Be6 (14.Qf3 Nf7+/–) 14...Re6+= 15.Nd5 Qd8 16.Nf3 Nd7 17.0-0 e4 18.Nd4 Bd4 19.Bd4 Nc5 (19...Nf5 20.d3+/–) 20.b6 Nd3? (better is 20...Rc8+/–) 21.Nc7+– Rc8?? (21...Qc8+–) 22.Ne6 (22.Ne6 Qe7 23.Nc7+–) 1–0. GuestNTNN – GuestGZMQ, freechess.org, 2017.

6.e3 Nh6 7.Bc4 (7.Nc3 Qe6+/–) 7...Nf5 (7...d5 8.Bb3 Bg4 9.Ne2+=) 8.Nf3 1–0. GuestNKQM – GuestQLKR, freechess.org, 2017.

6.c4 Ne7 7.e3 0-0 8.Nf3 d5 (8...d6 9.d4 ed4 10.Nd4+=) 9.cd5 (9.d4 ed4 10.Bd4 Bb4 11.Nbd2 Be6+=) 9...Nd5= 10.Bc4 White terminates the opponent with strong threats 10...Be6 (10...Kh8 11.Qb3 Nb6 12.d4 ed4 13.Bd4+=) 11.0-0 Qd7 12.d4 ed4 13.Nd4 Bb6?? (better 13...Bd4 14.Qd4 Nc7+=) 14.Ne6+- Qe6 (14...Ne3 15.fe3 Rf7 16.Bd4 Bd4 17.ed4+-) 15.Bd5 (15.Bd5 Qf7 16.Bf7 Rf7 17.Qd5+-) 1-0. BeepBeepImAJeep (2700) - nodamio_mio (1830), lichess.org, 2017.

6.e3 d5 7.d4 Bb4 8.Bc3=.

6.e3 Ne7 7.c4 0-0 8.Qb3 d5 9.cd5 Nd5?? (better is 9...Qd6=) 10.Bc4+– Be6 11.e4 (11.Nc3 Kh8 12.Bd5 Bd5 13.Qd5 Qc7+–) 11...Nc7? (better is 11...Qb6 12.Bd5 Bf2 13.Kf1 Bd5 14.Qd5 Kh8+–) 12.Be6 Ne6 13.Qe6 Rf7 (13...Kh8 14.Nf3+–) 14.Nf3 (14.Nf3 Nd7 15.Nc3+–) 1–0. Borrmann,Fritz – Breitenstein,Otto, CiF, 1985.

6.e3 Ne7 7.d4 Bb4 8.c3 Bd6+=.

6.e3 Ne7 7.Ne2 0-0 (7...d5 8.d4 Bd6 9.Nbc3=) 8.Ng3 (8.d4!? Bb4 9.c3+=) 8...d5= 9.d4 ed4 (9...Bb4 10.c3 Ba5 11.Ba3=) 10.ed4 (10.Bd4 Nd7=) 10...Bd6 11.Be2 Bd7 (11...Re8 12.0-0=) 12.Nd2 Qb6 (12...Re8 13.0-0=) 13.c4 dc4 14.Bc4 Kh8 15.Ba3 (15.0-0 Bb5 16.Qb3 Bc4 17.Qb6 ab6 18.Ra8 Bf1 19.Ngf1 Rc8=) 15...Ba3 16.Ra3 Bb5 (16...Qd4 17.Qf3 Qb6 18.0-0=+) 17.Rb3 (17.Qb3 Ba6 18.Ba6 ba6=) 17...a6=+ 18.Qa1? (better 18.Bb5!? ab5 19.Nf3=+) 18...Nbc6-+ 19.Bb5 ab5 20.Qb2 Nd4 21.Nc4?? (better 21.Rd3 Rfd8 22.Nb1-+) 21...Qe6 22.Ne3 (22.Re3 Qc4 (22...bc4?! 23.Re6 Ne6 24.0-0=+) 23.Rc3 Qa2 24.Qa2 Ra2-+) 22...Nb3 (22...Qb3 23.Qb3 Nb3 24.0-0-+) 23.0-0 Nc6 24.Ngf5 (24.Re1 Rfd8 25.Nc2 Ne5-+) 24...Rfe8 (24...Rfd8 25.Qe2 g6 26.Ng3-+) 25.Rd1 (25.Rb1 g6 26.Nd6 Qd6 27.Qb3 Nd4-+) 25...Rad8 26.Rd8 Rd8 27.h3 Nca5 (27...b4 28.Ng3-+) 28.Qc3 Qc6 29.Qb4 h6 (29...Qc1 30.Nf1 Nd2 31.Qa5 Qf1 32.Kh2-+) 30.Qe7 Do you see the mate threat? 30...Qd7 31.Qe4 (31.Qb4 Rc8-+) 31...Re8 (31...Nc4 32.Qb1 Qd3 33.Qe1-+) 32.Qh4 (32.Qb4 Re5 33.Qg4 Nc5-+) 32...Kh7 (better 32...Nc4-+) 33.Ng4 (33.Qb4-+) 33...Qf5 34.Ne3 Qb1 35.Kh2 Re3 (35...Nd2!? 36.Qf4 Nac4 37.Qf5 Qf5 38.Nf5-+) 36.fe3 Qf5 (better 36...Nd2 37.Qf2 Nac4-+) 37.Qd4 (37.Qf4 Qf4 38.ef4-+) 37...Nd4 38.ed4 Qf4 39.Kg1 Qd4 (39...Nc4 40.g4 Ne3 41.Kh1 Qe4 42.Kg1 Qg2) 40.Kf1 (40.Kh2 Nc4 41.h4 Qf4 42.g3 Qd2 43.Kh3 Ne3 44.h5 Qg2 45.Kh4 Qh1) 40…b4 (40...b4 41.h4 b3 42.h5 b2 43.Ke2 b1Q 44.g3 Qbd1; 40...Nc4 41.g3 Qd2 42.Kg1 Ne3 43.g4 Qg2) 0-1. aravind555 (1835) - arash10master (1815), lichess.org, 2020.

5.e3 a6 6.c4 cb5 7.ab5 a5 8.Qh5 (8.d4 d6+/–) 8...g6+= 9.Qd1 Qc5 (9...Bb4 10.Nc3 Ne7 11.Na2+=) 10.Nf3 (10.Nc3 a4+–) 10...d5 (10...e4 11.Nd4 b6 12.d3+/–) 11.cd5 (11.d4 ed4 12.Bd4 Qd6+/–) 11...Qd5+= 12.Nc3 Qc5 (12...Qe6 13.Qa4+/–) 13.Be2 (better is 13.d4 ed4 14.Nd4+/–) 13...Qb4 (better is 13...Bf5!?+/–) 14.Ba3+– Qg4 15.0-0 (15.Nd5 Ba3 16.Nc7 Ke7 17.Ra3+– (worse is 17.Na8 Qb4+–)) 15...Be7 (better is 15...Ba3 16.Ra3 Qd7+/–) 16.Ne5!+– fe5?? (16...Qe6 17.Nc4 Nd7+–) 17.Bg4 Bd7 (17...Bg4 18.Qg4 Nd7 19.Nd5+–) 18.Nd5 Bd6 (18...Ra7 19.b6 Ra6+–) 19.Bd6 1–0. GuestLMDD – Hassanein, freechess.org, 2016.

5.e3 a6 6.c4 cb5 7.ab5 Bc5 8.d4 ed4 9.ed4 Bb4 10.Bc3 Qe6 11.Be2 Bc3 12.Nc3 d6?? (better is 12...Ne7+/–) 13.Nd5+– Kd8 14.b6 Qe4 15.Nc7 Nc6 16.Na8 Nge7 17.Nf3 Nb4 18.0-0 g5 19.Qb1 (19.Qd2 Nbc6+–) 19...Qe2 (19...Qb1 20.Rfb1 Nc2 21.Ra2+–) 20.Qb4 Nf5 21.Nc7 Qe4 22.Ra5 g4 (22...Bd7+–) 23.Rf5! Qf5 (23...Bf5 24.Qd6 Double attack; 23...Qf5 24.Qd6 Pinning) 24.Qd6 Bd7 25.Nd2 Kc8 26.Ne6! 1–0. jboger (2190) – sgrant (2080), net–chess.com, 2011.

5.e3 a6 6.c4 cb5 7.ab5 d6 8.d4+=.

5.e3 cb5 6.ab5 a6 7.c4 Bc5 8.Nc3 Ne7 9.Qh5 g6 10.Qd1 (10.Qf3 Bb4+=) 10...f5 (better is 10...d6!?+=) 11.Be2 1–0. DEFFM – GuestWTFS, freechess.org, 2016.

5.e3 Qa5 6.c4 Ne7 (6...d6 7.Bc3 Bb4 8.Bb4 Qb4 9.Nc3=) 7.Nf3 (7.Bc3 Bb4+=) 7...d5= 8.Be2 Bf5 9.0-0 0-0 (9...dc4!? 10.Bc4 Nd7+=) 10.d4+= Bd6? (better is 10...ed4 11.Nd4 Bd4 12.Qd4 Be6+=) 11.c5+– (11.de5?! fe5 12.Be5 Be5 13.Ne5 Qc7+/–) 11...Qc7? (11...Bc5 12.dc5 Nd7+–) 12.cd6 Qd6 13.de5 fe5 14.Be5 Qg6 15.Nh4 Qg5 16.Nf5 Qf5 17.Bb2 Nd7 (17...Qe6 18.Nc3+–) 18.Nc3 (better is 18.Bg4 Qg6 19.Bd7+–) 18...Nf6 19.Bd3 Ne4 (19...Qg5 20.bc6 bc6 21.Qc2+–) 20.Ne4 de4 21.Bc4 Nd5 22.Qd4 Qg6 23.Bd5 cd5 24.Qd5 Kh8 25.Qb7 h5 (25...Rfb8 26.Qe7+–) 26.Rac1 h4 (26...Rfb8 27.Qc6 Qc6 28.Rc6+–) 27.Rc6 Qg5 28.Rc7 Rg8 (28...Rab8 29.Bg7 Kg8 30.Qe4+–) 29.Qe4 h3 30.Qf3 (better is 30.Rc5! Rge8 31.Qa8 Qg2 (31...Ra8?? 32.Rg5 Rd8 33.Rg7+–) 32.Qg2 hg2+–) 30...hg2 (30...Qg2 31.Qg2 hg2+–) 31.Qh3 1–0. Khakimzianov,Rinat – Gusev,Fedor, Ufa Dautov Memorial, 2007.

5.e3 d5 6.d4 ed4 7.Bd4 Bd4 8.ed4=.

5.e3 Ne7 6.d4 Bb4 7.c3 Bd6 8.Bd3+=.

5.e3 Ne7 6.d4 ed4? (6...Bb4 7.c3 Bd6 8.Bd3+=) 7.ed4?? (better 7.Qh5 Ng6 8.Qc5 de3 9.Qe3 Kf7 10.Qg3+-) 7...Bd6 (7...Bb6 8.Bd3=) 8.Bd3 0-0 9.Qh5 Threatening mate: Bxh7 9...Ng6 (9...g6 10.Qf3=) 10.Bg6 hg6 11.Qg6 Qe7 12.Ne2 cb5 (12...Re8 13.Nbc3+-) 13.ab5 a6 14.c4 Bb4 15.Bc3 (15.Nbc3+-) 15...Bc3 (better 15...d5!?+-) 16.Nbc3+- Qb4 17.h4 (better 17.Ra4 Qe7 18.Nd5+-) 17...Qb2? (better 17...Qc4 18.h5 d6+-) 18.Rb1+- Qc2 (18...Qa3 19.h5 f5+-) 19.Qc2 ab5 20.Nb5 Nc6 21.h5 Re8 22.h6 d5 23.hg7 Kg7 24.Rh7 Kf8 25.Qg6 (25.Rh8 Ke7 26.Qh7 Kd8 27.Qc7) 25...Re7 (25...Re2 26.Ke2 Ra2 27.Kf1 Rf2 28.Kf2 Nd8 29.Qf6 Ke8 30.Nd6) 26.Rh8 1-0. aravind555 - Sun_nY, lichess.org, 2019.

5.e3 Ne7 6.d4 ed4? 7.Qh5+- Ng6 8.Qc5 de3 9.fe3 (9.Qe3 Kf7 10.Qg3 Qe7 11.Kd1 d5+-) 9...d6 10.Qc4 (10.Qh5 Be6+-) 10...Qe7 11.Bc1 (11.Qc3 0-0+-) 11...Be6 12.Qc3 0-0 13.Nf3 cb5 (13...Rc8 14.Qd2+-) 14.ab5 Nd7 15.Be2 Rfc8 (15...Nb6 16.Qd4+-) 16.Qd2 (16.Ra7 Nge5+-) 16...Bf5 (16...Nc5 17.Nc3+-) 17.Nd4 Be4 18.0-0 Nde5 19.Nc3 Nc4 (19...d5 20.Ne4 de4 21.Nf5+-) 20.Bc4 Rc4 21.Ne4 (21.Ba3 Rac8 22.Bb2 b6+-) 21...Qe4 22.Qd3 (22.Ra2 Rcc8+-) 22...d5 23.Qe4 (23.Qd2 Rcc8+-) 23...de4 24.Bb2 (24.Bd2 Rc5+-) 24...a6 (24...a5 25.ba6 ba6 26.Ra5+-) 25.ba6 ba6 26.Rf5 Ne5 27.Ne6?? (better 27.Rf4+-) 27...Kf7+= 28.Be5 (better 28.Ng7!? Kg7 29.Be5 fe5 30.Re5+=) 28...Ke6=+ 29.g4 fe5 30.Ra5 Ra7 31.Rae5 Kd6 32.Rd5 Kc6 33.Ra5 (33.Rd4 Rd4 34.ed4 a5=+) 33...Rc2 34.Rfe5 Rb2 (34...Kb6 35.Rad5=+) 35.Re4 (35.Re4 Kb6 36.Rf5=+). aravind555 (1825) - Pinaka (1895), lichess.org, 2020.

5.d4 e4 6.e3 Nh6 7.c4 Be7 8.Nc3 Be6 9.Nge2 0-0 10.Nf4+/– Bf7 11.h4 Bb4 12.Qb3 Ba5 13.Rc1 Nd7 14.c5 Rb8 15.Be2 Bc3 16.Bc3 Qe7 17.Bb4 Qd8 18.Bh5 Bh5 19.Nh5 Qe8 20.Nf4 Qf7 21.h5 a6 22.b6 Nf5 23.Bd2 Qe7 24.g4 Nh6 25.Rg1 Rf7 26.Qd1 Nf8 27.Ke2 Ne6 28.Ne6 Qe6 29.Be1? Ng4–+ 30.Rg4? Qg4 31.Kd2 Qf5 32.Kc3 g5 33.Qe2 Qh3 34.Rc2 h6 35.Bd2 f5 36.a5 Qg4 37.Qg4 fg4 38.f4 gf3 39.Be1 1–0. iczker – sakkmat (1615), internet, 2011.

5.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6 5.a4).

5.e3 Be6 6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 c6 6.a4).

5.a4 Bb4 6.e3 d5 7.Nc3 d4 8.ed4 ed4 9.Ne4 d3 10.Qh5+/– g6 11.Qf3 Bf5 12.Bd3 Nd7 13.Ne2 Nc5?? 14.Nc5+– Ne7 15.0-0 Bc5 16.Nf4 0-0 17.Rfe1 Bd3 18.Nd3 Bd4 19.Bd4 Qd4 20.Nf4 Qc4? 21.Re7+– ab5 22.Ne6 Rf7 23.Rf7 Kf7 24.Re1 Ra4?? 25.Qg3 Qe6–/+ 26.Re6?? Ra1 (26...Ra1 27.Re1 Re1) 0–1. elsh1403 – hugr, internet, 2011.

5.a4 ab5 6.cb5 cb5 7.ab5 Ra1 8.Ba1 Qa5 9.Nc3 Bb4 10.e3 Ne7 11.Nf3 d6 12.Be2 Be6 13.0-0 Nd7 14.Ne4 d5 15.Nc3 0-0 16.Qb3 Nc5 17.Qb1 Nc8 18.Rc1 Nb6 19.Kh1 Ra8=+ 20.Kg1 Nb3?? 21.Qb3+– Kf7 22.d4 e4 23.Nd2 Bc3 24.Bc3 Qa3 25.Qa3 Ra3 26.f3 f5 27.Kf2 g5 28.Bb4 Ra2 29.Rc7 Kf6 30.Rb7 Na4 31.Ra7 h5 32.Ra6 Nc3 33.Ra2 Na2 34.b6 Nb4 35.b7 Na6?? 36.Ba6 1–0. elsh1403 – innyjan (1620), internet, 2011.

5.a4 ab5 6.cb5 cb5 7.ab5 Ra1 8.Ba1 d5 9.e3 Bd7 10.Nc3 Qa5 11.Nd5+= Bd6 12.Bc3 Qa3 13.Nf3 Ne7 14.Nb6 Be6 15.Bc4 Kf7? 16.0-0 Qa7 17.Be6 Ke6 18.Nc4 Qc5 19.Qb3 Nd5?! 20.d4 Qc7 21.de5 fe5 22.Rd1 Nc3 23.Nd6 (23.Nd6 Kf6 24.b6 Ne2 25.Kf1+–) 1–0. elsh1403 – hugr (1780), internet, 2011.

5.a4 ab5 6.cb5 d5 7.e3 Bf5 8.Nc3 d4 9.ed4 Qd4 10.Nf3 Qd7 11.Bc4 Bd3 12.Qb3 Bc4 13.Qc4 Bd6 14.0-0 Ne7 15.Ne4 Nd5 16.Nc3 Nc3 17.dc3 Qf7 18.Qf7 Kf7 19.Rfd1 Bc5 20.Ba3 Ba3–/+ 21.Ra3 cb5 22.Rb3 ba4 23.Rb7 Kg6 24.Nh4 Kg5?? 25.g3 g6–+ 26.Nf3 Kh6 27.Ra1 Nc6 28.Rb6 Rhc8 29.Kg2 a3 30.Rb3 a2 31.Rb2 Ne7 32.Rba2 Ra2 33.Ra2 Rc3 34.Ra6 Nd5 35.Rd6 e4 36.Nh4? Rd3–+ 37.Kh3?? f5! 38.Ng2? Nb4 39.Nf4?? Rd6 40.Kg2 Rd2 41.Ne6 Nd3 42.Kh3 Rf2 43.Nf4 Nf4 44.gf4–+ e3 45.Kg3 Rf4! 46.Kf4 e2 47.Ke5 e1Q 48.Kd5 Kg5 49.Kd4 Kf4 50.Kd5 Qe5 51.Kc4 Ke4 52.Kb3 Kd3 53.Kb4 Qc7 54.Kb5 Kd4 55.Kb4 Qc4 56.Ka5 Qb3 57.Ka6 Kc5 58.Ka7 Kc6 59.Ka8 Qb7 0–1. elsh1403 (1605) – hugr, internet, 2011.

5.ba6 Na6 6.Nc3 d5 7.cd5 cd5 8.e3 Nc7 9.d4 =.

5.Nc3 ab5 6.cb5 d5 7.e3 Bb4 8.a3 Bd6 9.bc6 =.

5.d4 Bb4 (5...ab5 6.cb5 e4 7.e3 d5 8.Nc3 Qb6 9.Bc1=; 5...Qa5 6.Bc3 Bb4 7.Qd2 Bc3 8.Nc3 ed4 9.Qd4=) 6.Bc3 Qa5 7.Qd2 Bc3 8.Nc3 ed4 9.Qd4 =.

5.e3 ab5 6.cb5 d5 7.d4 e4 8.Nc3 Bd6 9.bc6 =.

5.e3 ab5 6.cb5 d5 7.Qh5 g6 8.Qh4 Bg7 9.f4 Nd7 10.Nf3 Ne7 11.fe5 Ne5 12.Ne5 fe5 13.Be2 0-0 14.Rf1 Nf5 15.Qd8 Rd8 16.Nc3 d4 17.Ne4 de3 18.Bc4 Kh8 19.0-0-0? cb5 20.Bb5 Ra2?? 21.de3= Rf8 22.Rfe1?? Ra5 23.Rd5 Be6 24.Rc5 Rc8 25.Rc8=+ Bc8 26.Bd3 Ra6?? 27.Kd2?? Rb6 28.Rb1 Be6 29.Be5 Rb1 30.Bg7 Kg7 31.Bb1 Bd5 32.Nc3 Bg2–/+ 33.Bf5 gf5 34.Nb5 Bc6 35.Nd6 Kg6 36.Kd3 b5 37.e4? fe4–+ 38.Ne4 Be4 39.Ke4 b4 40.Kd4 Kg5 41.Kc4 h5 42.Kb4 Kh4 43.Kc3 Kh3 44.Kd2 Kh2 45.Ke2 Kg2 46.Ke3 h4 47.Kf4 h3 48.Ke5 h2 49.Kd4 h1Q 50.Kc5 Qh5 51.Kd4 Kf3 52.Kd3 Qg5 53.Kd4 Qf5 54.Kc3 Qd5 55.Kc2 Ke3 56.Kb2 Qc5 57.Kb3 ½–½. elsh1403 – maxplanck1, internet, 2011.

5.cb5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 d5 9.e3 Bd6 10.Nf3 Ne7 11.Be2 0-0 12.d3 Bd7 13.Nbd2 (13.Qa4!?=+) 13...Bb5-/+ 14.Qb3 Bc6 (14...Qd7 15.0-0-/+) 15.0-0 Kh8 16.Bb2 Na6 17.Rc1 Nc5 18.Qc2 Ne6 19.Qb3 Qa5 20.e4 (20.Bc3 Qa4-/+) 20...Nc5 (20...Nf4 21.Bf1-+) 21.Qc2-/+ de4 (21...Na4 22.Ba1-/+) 22.de4 (better 22.Ne4 Ne4 23.de4-/+) 22...Rc8?? (better 22...Qa4-/+) 23.Nc4+/- Qd8 24.Rd1?? (better 24.Nd6 Qd6 25.Qc5 Qc5 26.Rc5 Be4 27.Rc8 Nc8 28.Ba3+/-) 24...Ne4 (24...Be4 25.Qd2 Nd5 26.Be5 Be5 27.Nfe5 fe5 28.f3-+) 25.Bd3 (25.Be5 fe5 26.Nfe5 Qf8-+) 25...Bd5-+ 26.Be4? (better 26.Qe2 Nf2! 27.Kf2-+) 26...Rc4 (26...Bc4?! 27.Bb7 Rc7 28.Be4-/+) 27.Qb3 Re4 (27...Be4 28.Qc4 Bf3 29.gf3=) 28.Rd5 Nd5 29.Qd5 Qa5 (better 29...Rb4 30.Bc3 Rb1 31.Ne1 Be7-+) 30.Qe4 (better 30.Qa5 h6 31.Qd8 Kh7 32.Qd6+-) 30...Qc5 (30...Qb5 31.Qf5 Qc6 32.Qe6+/-) 31.Ne1 (31.Qb7 Qc7 32.Qd5 h6+-) 31...h6 (31...Qc6 32.Qd3+/-) 32.g3 (32.Qb7 Qc4+-) 32...Bc7? (32...Qb4 33.Qe2+/-) 33.Kg2 (better 33.Qb7!? Bb6 34.Qa8 Kh7 35.Qe4 Kg8 36.Nd3+-) 33...Bb6 34.Nf3?? (better 34.Nd3 Qc6 35.Kf3+/-) 34…Qf2-+ (34...Qf2 35.Kh3 Qb2-+) 0-1. ClayPigeons (2150) - despeler (2200), Rated Bullet game, lichess.org, 2019.

5.cb5 b6 6.e4 d6 7.Be2 h5 8.Bh5 Ke7 9.Nc3 a6 10.Nd5 Ke6 11.Qg4 f5 12.Qf5 1–0. rcm06 (1905) – ctrussell, gameknot.com, 2012.

5.cb5 Qb6 6.Nc3+= Bb4 7.Nd5+/– Qd6 8.Rc1 (8.Nb4?! Qb4 9.Qc1 Ne7=) 8...Qd5 9.Rc8 Kf7 10.a3 (better is 10.e3 Qe6 11.Qa4+/–) 10...Bd6? (better is 10...Ba5+/–) 11.e3+– b6 (11...Ke7 12.f3 e4+–) 12.Bc4 (12.Bc4 Qc4 13.Rc4+–) 1–0. b4_player – KamWC, gamecolony.com, 2007.

5.cb5 Bc5 6.e3 d6 7.Qh5 (7.d4 ed4 8.Bd4 Bd4 9.Qd4 Ne7+=) 7...g6 8.Qd1 Ne7 (8...Be6 9.d4 ed4 10.Bd4=) 9.Nc3 (9.d4 Bb6=) 9...Nf5 (9...d5 10.d4 ed4 11.ed4=) 10.Bc4 (10.Nf3 Nd7+=) 10...a6 (10...Nd7 11.Rc1=) 11.a4 (11.ba6 ba6 12.Nge2 Nd7+=) 11...Bd7 (11...ab5 12.Bb5 Bd7 13.Nf3=) 12.Qb3 Qe7 (better is 12...ab5!? 13.ab5 Ra1 14.Ba1 Rf8+=) 13.Nd5+/– Qd8 14.b6 Nc6 15.Nc7 Qc7 1–0. DEFFM – herculanum, freechess.org, 2016.

5.cb5 Bc5 6.e3 Ne7 7.Be2 0-0 8.Nf3 d5 9.Qb3 Be6 10.e4 (10.d4 ed4 11.Bd4 Bd4 12.Nd4 Qa5 13.Nc3 Rc8+/–) 10...Qd6 11.ed5 Bd5 12.Qc2 Nd7 13.Nc3 a6 14.a4 ab5 15.ab5 Nb6 16.Nd5 Nbd5 (worse is 16...Qd5 17.Bd3+=) 17.0-0 Nb4 18.Qd1 Nf5 19.Ra8 Ra8 20.Qb3 Kf8 21.Rd1 Nd5 22.Bc4 Nfe7 23.Bd5 (23.d4 ed4 24.Qd3 Kg8+=) 23...Nd5 24.g3 (24.d4 ed4 25.Bd4 Bd4 26.Nd4 Rd8+=) 24...Nc7 (24...e4!? 25.d4 Bb4–/+ (25...ef3?? 26.dc5 Qe6 27.Qd5 Qd5 28.Rd5+–)) 25.d4= ed4 26.Nd4 Qb6 27.Rd2 Re8 28.Qc4 Ne6 29.Ne6 Qe6?? (better is 29...Re6 30.Bd4 Bd4 31.Rd4 Re2=) 30.Qc5+– Kg8 31.Qd5 Qd5 32.Rd5 Re1 33.Kg2 Rb1 34.Ba3 b6 (34...Rb3 35.Bc1 Kf8 36.Bf4+–) 35.Bd6 Kf7 36.Bc7 Ke6 37.Rd6 Ke7 38.Rb6 Kd7 39.Bf4 g5 40.Rb7 Kc8 41.Rb8 Kd7 42.Be3 Kc7 43.Rb6 h5 44.Rf6 Rb5 45.Bb6 Rb6 46.Rb6 Kb6 47.Kf3 (47.Kf3 Kc5 48.h4 gh4 49.Kf4–+ (worse is 49.gh4 Kd5 50.Kf4 Ke6+–)) 1–0. valpa – Dutchin, playchess.de, 2003.

5.cb5 Ne7 6.a4 d6 7.e3 Bd7 (7...Nd7 8.d4=) 8.Nf3 (8.Qh5 g6 9.Qf3 Bg7 10.Qb7 Na6+=) 8...Ng6 (8...Bg4 9.Be2=) 9.Be2 Be7 10.0-0 0-0 (10...d5 11.d4 e4 12.Nfd2+=) 11.d4 Be6 12.de5 (12.Bd3 a6+=) 12...Ne5 (12...de5!? 13.Qc2 Nd7=) 13.Nc3 Nbd7 (13...Nc4 14.Rb1+-) 14.Nd4 Bf7 15.Rc1 (15.Nf5!?+-) 15...Nc5+= 16.Nf5 g6 (16...Bb3!? 17.Qd4 Be6 18.Ne7 Qe7+=) 17.Ne7 Qe7 18.Nd5 Bd5 19.Qd5 Kg7 20.Rfd1 Rac8 (20...Na4 21.Ba3 Nf7 22.Bf3+-) 21.Qd6 (21.a5+-) 21...Rfe8 (better 21...Qd6!? 22.Rd6 Na4 23.Rc8 Rc8 24.Be5 fe5 25.Rd7 Kf6 26.Rb7 Rc1 27.Bf1 Nc3+-) 22.Qe7+- Re7 23.Ba3 (23.Bd4 b6+-) 23...b6 24.Bc5 Rc5 25.Rc5 bc5 26.Rc1 Rc7 27.a5 Nd7 28.Bf3 f5 29.g3 (29.Kf1 Kf6+-) 29...h5 (29...Kf6!?+-) 30.Bc6+- Ne5 (30...Nb8 31.Rc5 Kf6 32.Rc4+-) 31.Rc5 Kf6 32.h4 (32.f4 Nd7 33.Rc4 Kg7+-) 32...Nd3 (32...Nd7 33.Rc1+-) 33.Rd5 (better 33.b6 ab6 34.ab6+-) 33...Ke6?? (33...Ne5 34.Ba8 Rc8+-) 34.Rd3 a6 (34...Ke7 35.Rb3+-) 35.Bd5 Ke5 36.b6 Rc5 (36...Rc1 37.Kg2 Kd6 38.Bc4 Kc6 39.Rb3+-) 37.f4 (better 37.b7 Rb5 38.Rb3 Rb7 39.Bb7+-) 37...Kf6 (37...Kd6 38.Bc4 Kc6+-) 38.b7 Rb5 39.Bc6 (39.Rb3 Rd5 40.b8Q Rb5 41.Qf8 Ke6 42.Rd3 Rb1 43.Kf2 Rb2 44.Kf3 Rf2 45.Kf2 g5 46.Rd6) 39...Rb1 40.Kf2 g5 (40...Rb2 41.Kf3 Ke6+-) 41.hg5 Kg6 42.Rd5 (42.Rd7 Rc1 43.b8Q Rc2 44.Kf3 Rf2 45.Kf2 h4 46.Qe8) 42...h4 43.gh4 Kh5 44.Rb5! Kg4 (44...Rb5 45.Bb5) 45.Rb1 (45.Rb1 Kh5 46.b8Q Kh4 47.Qh8 Kg4 48.Rg1; 45.Bf3 Kh4 46.Rb1 Kh3 47.Rh1) 1-0. BeepBeepImAJeep (2610) - BOG1963 (1670), lichess.org, 2017.

5.cb5 Ne7 6.e3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Qb6 (9...d5 10.d4 e4 11.Qb3=) 10.Nc3 d5 11.Be2 d4 12.Ne4 f5 13.Ng3 f4 (13...de3!? 14.fe3 Nd7=) 14.ef4+= ef4 15.Ne4 (15.Nh5 Qd6 16.Qa4 Qg6 17.Nf4 Qb1 18.Bd1 d3+–) 15...Bf5 16.f3 Nd5 17.Bc4 Nb4 18.d3 h5 (18...Qa7 19.Bb2 Qa5+/–) 19.Ne2+– Bd6? (19...Be4!? 20.fe4 f3 21.gf3 Bc5+–) 20.Nd6 (20.Bd4 Qd8+–) 20...Qd6 21.Bd4 Rh7 22.Qd2 g5 23.Bc3 (better is 23.h4+–) 23...Nd3+= 24.Bd3 Bd3 (24...Qd3 25.Bf6+=) 25.Bb4 Qg6 (25...Qd7 26.Kf2 Qb5 27.Nd4=) 26.0-0 Rd7 (26...Bb5 27.Re1 Qb6 28.Nd4 Kd7 29.Kh1+–) 27.Qe1 (better is 27.Rc1 Kf7 28.Nf4 gf4 29.Rc8 Qb6 30.Bc5=) 27...Be2?? (better is 27...Kf7 28.Qf2 Qf5+=) 28.Qe2+– Kd8 (28...Kf7 29.Re1 Kg8 30.Qe8 Qe8 31.Re8 Kf7 32.Rb8 Kg6+–) 29.Rd1 (better is 29.Qe5 Kc8 30.Qc5 Nc6 31.Ra1+–) 29...Rd1= 30.Qd1 Kc8 (better is 30...Nd7!? 31.Bd6 Qe6=) 31.Be7 Qe8? (better is 31...Qb6 32.Kh1 Nd7+–) 32.Bg5+– Qe3 33.Kh1 (better is 33.Kf1 Nd7 34.Qc2 Qc5 35.Qc5 Nc5 36.Bf4+–) 33...Qe8? (33...Nd7 34.h4+–) 34.Bf4 (better is 34.Qc1 Nc6 35.Bf4+–) 34...Nd7?? (better is 34...Qb5 35.h4 Qe8+–) 35.h3 (better is 35.Qc2 Kd8 36.Bg5 Nf6 37.Bf6 Kd7+–) 35...Nf6 (35...Qe7 36.Qa1 Nc5+–) 36.Qd6 Ng8 (36...Qe1 37.Kh2 Ne8 38.Qb8 Kd7 39.Qb7 Ke6+–) 37.Qc7 1–0. Valpa – Footyhead, playchess.de, 2005.

5.cb5 Ne7 6.e4 (6.d4 ed4 7.Qd4 d5=) 6...Ng6 (6...d5 7.Qh5 g6 8.Qf3=) 7.g3 (7.Nc3 Nf4+=) 7...d6 (7...d5 8.ed5 Qd5 9.f3+=) 8.a4 (8.d4 d5 9.de5 Bb4 10.Bc3 Bc3 11.Nc3 d4=) 8...Nd7 (8...d5 9.ed5 Qd5 10.Nf3+=) 9.Bg2 (9.Nc3 Nc5=) 9...Rb8 (9...d5 10.ed5 Nb6 11.Qb3=) 10.Nc3 (10.d4 Be7=) 10...b6 (10...Nc5!? 11.d4 ed4 12.Qd4 Qa5=) 11.Nge2+= Nc5 (11...Bb7 12.0-0+=) 12.Nc1 (12.d4 ed4 13.Nd4 Ne5+/–) 12...Bb7 (12...f5 13.d4 Ne4 14.Ne4 fe4 15.Be4+=) 13.0-0 Be7 (13...Rc8+=) 14.Ba3 (14.d4 Nd7+=) 14...Rc8 (14...0-0 15.d4 ed4 16.Qd4=) 15.Qe2 (15.d4 ed4 16.Qd4 Qd7+=) 15...0-0= 16.h4 (16.Bh3 Rc7=) 16...h6 (16...f5 17.Bc5 Rc5 18.Nd3=) 17.h5 (17.Bh3 Rc7+=) 17...Nh8= 18.Bh3 Rc7 19.Bf5 (19.a5 Nf7=) 19...Nf7 20.Qg4 Ng5 e4 draws heavy fire 21.f4 (21.N1e2 Re8=) 21...Nge4 22.Bc5 Nc5 23.Qg6 1–0. mic (2100) – alwayslosing (2020), net–chess.com, 2008.

5.cb5 Nh6 6.d4 d6 (6...Qa5!? 7.Qd2 Bb4=) 7.e4+= Be7 (7...Nd7 8.Nd2+=) 8.Bc4 Nf7 (8...Bg4 9.Nf3+=) 9.Nf3+/– a6 (9...Nd7 10.0-0+=) 10.ba6 ba6 11.Qb3 0-0 12.Bd5 Be6 (12...Ra7 13.Qb8 Qa5 14.Bc3+–) 13.Be6 Nc6 14.Qc3 Qa5 (14...Nd4 15.Nd4 ed4 16.Qd4+–) 15.Qa5 Na5 16.Nbd2 (16.Nc3 Rfb8 17.Ba3 Nc6+–) 16...Kh8 (16...Rab8 17.Rb1+–) 17.Bd5 (17.Rb1 Rab8+–) 17...Rac8 (17...Rab8 18.Bc3 Bd8 19.0-0+–) 18.Ke2 (18.Rc1 Rb8 19.Ba3 Rb5+–) 18...Ng5 (18...Rc2 19.Rhb1+–) 19.Ng5 fg5 20.de5 de5 21.Rac1 (21.Be5 Bf6 22.Bf6 gf6+–) 21...Bc5 22.Nf3 (22.Be5 Nc6 23.Bg3 Nd4 24.Kd3 Bb4+–) 22...g4 23.Ne5 Rf2 24.Kd3 Rb2 25.Nf7 (25.Nf7 Kg8 26.Nd6 Kh8 27.Nc8+–; 25.Ng4?! g6+–) 1–0. pierre – super knight, ChessHere.com, 2006.

6.a4 Bc5 7.e3 Bf5 8.Qb3 (8.d4 Bd6=) 8...Ne7=+ 9.d4 Bb6 (better 9...Bd6!?=+) 10.de5+/- Ba5 11.Bc3 (11.Nd2!? Nd7 12.ef6 Nf6 13.Bf6 gf6 14.Rc1+/-) 11...Bc3 (11...fe5 12.Ba5 Qa5 13.Qc3 Qc3 14.Nc3=) 12.Qc3 0-0 (12...fe5!? 13.Qe5 Bb1 14.Rb1 Qa5 15.Ke2 Qa4+=) 13.ef6+/- Rf6 14.Nf3 Nd7 15.Bd3?? (better 15.Nbd2+=) 15...Rc8-+ 16.Qd2 (16.Qa3 Bd3 17.Nbd2 Nc5-+) 16...Bd3 17.Qd3 (17.Nc3 Nc5-+) 17...Rc1 18.Ke2 Rh1 19.Ne1 (19.Qd4 Rg6-+) 19...Ne5 (19...Qf8 20.f3-+) 20.Qb3 (20.Qd4 Qf8 21.f4 Nc4-+) 20...Qa5 (better 20...Rh2!? 21.Nd2-+) 21.Nc3 (21.Qc3 Qc3 22.Nc3 Ng4-+) 21...Rh2 (better 21...Nc4 22.Rd1-+) 22.Nd5 Nd5 23.Qd5 Nf7 24.Rc1 Qd8 (24...g6 25.Qb7 Rh1 26.Qc8 Kg7 27.Qc2-+) 25.Qc4 (25.Qd8 Nd8 26.Rc8 Rd6-+) 25...h6 (25...Qf8 26.Qd5 Kh8 27.e4-+) 26.Rd1 (26.Qc8 Qc8 27.Rc8 Kh7-+) 26...Qf8 (better 26...Rf2! 27.Kf2 Qd1 28.Qd4-+) 27.Rd7 Kh7 28.Rb7 (28.Qe4 Kh8 29.f4-+) 28...Rh5 (better 28...Nd6 29.Qd3 Kh8-+) 29.Qc2 (29.Ra7 Rhf5 30.f3 Ne5-+) 29...g6 (29...Kg8 30.Ra7 Rc5 31.Qb3-+) 30.Ra7 Rhf5 31.f3 (31.Nd3 Qe8-+) 31...Re5 32.e4 (32.Nd3 Re7 33.Qc5 Nd6-+) 32...h5 (32...Re7!? 33.Re7 Qe7 34.Nd3-+) 33.Rc7 Re7 34.Nd3 Rc7 (34...Nd6 35.e5 Rff7 36.Rc5-/+) 35.Qc7 Qg7 (35...Re6 36.a5-/+) 36.Qc2?? (36.b6 Nd6 37.Qg7 Kg7 38.Nc5=) 36...Ng5 (better 36...Nd6-/+) 37.Nf4?? (better 37.Qc4-/+) 37...Rf4-+ 38.Qd2 (38.a5-+) 38...Ne4 (better 38...Qe5 39.Qd7 Rf7-+) 39.Qf4-/+ Ng3?? (better 39...Nc5-/+) 40.Qg3+- Qe7? (40...Qb2 41.Kd3 Qb3 42.Kd4 Qa4 43.Kc5+-) 41.Kf2 (better 41.Kf1 Qc5 42.Qf4 Kg7+-) 41...Qa3?? (41...Qa7 42.Kf1 Qa4 43.Qc7 Kg8 44.Qd8 Kf7 45.Qd7 Kf6 46.Qd6 Kf7 47.b6+-) 42.Kg1 (42.Qc7 Kh6 43.b6 g5 44.Qc6 Kg7 45.Qd7 Kg6 46.Qe6 Kh7+-) 42...Qc5? (better 42...Qa4 43.b6 Qd4 44.Qf2 Qb4+-) 43.Kh2 Qc1 (43...Kg7+-) 44.Qg6 (better 44.b6 Qd1 45.Qc7 Kh6 46.Qf4 g5 47.Qf6 Kh7 48.b7 Qa4 49.Qg5+-) 44...Kg6-+ 45.f4 (45.b6 Qf4 46.Kg1 Qa4-+) 45...Qc3 (better 45...Qf4 46.Kg1 Kf5 47.b6 Kg4 48.Kh1 Kg3 49.a5 Qc1) 46.g3 Qb4 (46...Qc2 47.Kh1 Kf5 48.b6 Kg4 49.a5 Kg3 50.a6 Qd1) 47.Kh3 (47.f5 Kf5 48.Kh1 Kg4 49.Kg2 Qd2 50.Kf1 Kg3 51.a5 Qd1) 47…Kf5 (47...Kf5 48.b6 Qd4 49.g4 Kf4 50.b7 Kf3 51.b8Q Qg4 52.Kh2 Qg2; 47...Qd2 48.b6 Qf2 49.a5 Qg1 50.g4 hg4 51.Kh4 Kf5 52.a6 Qh2) 0-1. ClayPigeons (2135) - Ogreaggressive (2265), Rated Bullet game, lichess.org, 2021.

6.d4 Qa5 7.Qd2 Qb5 8.de5 Qb4 =.

6.d4 Bb4 7.Bc3 Qa5 =.

6.d4 Bb4 7.Bc3 Bc3 8.Nc3 =.

6.d4= Nd7 7.e3 Bd6 8.Nc3 Ne7 9.de5 =.

6.d4 e4 7.Qb3 Be6 8.e3 Qb6 9.Nc3 a5? (better is 9...Qa5=) 10.Nd5+– Bd5 11.Qd5 Ne7 (11...Bb4 12.Kd1+–) 12.Qe4 Nd7 13.Rc1 f5 14.Qf3 g5 (14...Rd8 15.Bc4+–) 15.g4 (15.Qh5 Qg6 16.Qg6 hg6+–) 15...Ng6 (15...fg4 16.Qg4 h6 17.d5+–) 16.gf5 (16.gf5 Bb4 17.Kd1+–) 1–0. Woelfelschneider,Peter – Schaefer, 2009.

6.e3 Bd6 7.Nc3 Ne7 (7...Be6 8.Nf3=) 8.d4 (8.Qh5 Kf8=) 8...Be6 9.de5 fe5 10.Qh5 (10.Nf3 0-0=) 10...g6 (10...Bf7 11.Qh4=) 11.Qd1 Nd7 12.Nf3 0-0 (12...Qa5 13.Rc1=) 13.Ng5 Nc5 14.Ne6 (14.Qd2 Qa5=) 14...Ne6 15.Be2 (15.Nd5 Nd5 16.Bc4 Qh4 17.Qd5 Bb4 18.Kd1 Rad8–+) 15...Bc5 (15...Rc8 16.Bg4 (16.Nd5? Nd5 17.0-0 Rc5–+) 16...Qd7 17.Rc1= (17.Nd5? Nd5 18.0-0 Rc5–+)) 16.0-0 Qd6 17.Qb3 (17.Qd3 Rad8=) 17...Rad8 (17...Bb6!?=) 18.Rad1+/– Now all is on d5. White gets strong initiative 18...b6 19.Ne4! Qc7 (19...de4 A pinning theme 20.Rd6) 20.Bg4 Ng7 21.Nc3 h5? (better is 21...Qb7!?+/–) 22.Nd5+– Nd5 23.Rd5 Rd5 24.Qd5 Kh7 (24...Qf7 25.Bf3 Qd5 26.Bd5 Kh7 27.Bc6+–) 25.Be5 Qe7 26.Bg7 Rd8 (26...Kg7 27.Bf3+–) 27.Qe5 (27.Qb3 Kg7 28.Be6 h4+–) 27...Qg7 28.Qg7 (28.Qg3 Qf7+–) 28...Kg7 29.Rd1 Bd6 (29...Rd1 30.Bd1 h4 31.g3+–) 30.Be2 (30.Be2 h4 31.f4+–) 1–0. Waibel,Ulrich – Krolla,Hans_Peter, casual, 1996.

6.e3 Bd6 7.d4 Ne7 8.de5 fe5 9.Nf3 +=.

6.e3 Bf5 7.Nc3 (7.d4 Nd7=) 7...Bb4 (7...Ne7 8.d4=) 8.d4 Ne7 9.Qb3 (9.de5 fe5 10.Nf3 Nd7+=) 9...Bc3 (9...Qa5 10.Nf3 Nd7 11.a3=) 10.Bc3= Nd7 11.de5 fe5 (11...Ne5 12.Rc1=) 12.Nf3+= Rc8 13.Ne5 (better is 13.Be2!?=) 13...Ne5–/+ 14.Be5 Qa5 15.Ke2?? (15.Kd1 0-0 16.f3 Bc2 17.Qc2 Rc2 18.Kc2–+) 15...Rc2–+ 16.Kf3 (16.Qc2 Bc2 17.Bg7 Rg8–+ (17...Qb5 18.Kd2 Qb4 19.Bc3+/–)) 16...Qd2 17.Bg3 0-0 18.Kf4 (18.Qc2 Bc2 19.Kg4–+) 18...h6 19.Ke5 (19.Qd3 Ng6 20.Kf3 Bh3 21.Qf5 Rf5 22.Bf4 Qf2) 19...Ng6 0–1. Herrmann – Kleinke,Uwe, corr DDR–ch I730, 1979.

6.e3 Nh6 7.d4 Bb4 8.Nd2 =.

6.e4 d4 7.Bc4= Nh6 8.f4 (8.Qh5 g6 9.Qf3 Bg4+=) 8...Nd7 9.Nf3 Bd6 10.fe5 fe5 11.0-0 Qe7 12.a4 Nb6 13.Na3 Bg4 14.Qb3 0-0-0 (14...Bb4!?=) 15.a5 Nd7 16.b6 a6 17.Ba6?? (better is 17.Rac1 Kb8 18.h3+/–) 17...ba6–/+ 18.Nb5? (better is 18.Rac1 Kb7 19.Qd5 Kb8 20.Nc4–/+) 18...ab5–+ 19.Qb5 Nc5 (19...Nf6 20.d3 Qd7 21.Qb3–+) 20.a6 Kb8 (20...Rdf8 21.b7 Kc7 22.d3–+) 21.b7? (21.Qc6 Nb7 22.ab7 Qb7 23.Qa4–/+) 21...Ka7–+ 22.Nd4? (22.Qc6–+) 22...ed4 23.g3 (23.Rfc1 Qe5 (23...Ne4?! 24.Bd4 Bc5 25.Bc5 Nc5 26.Rc5–+) 24.g3 Ne4–+) 23...Bh3 (23...Qe4!? 24.Rfe1 Qd5 25.Ra4–+) 24.Rfe1 Ne6 25.Reb1 Bc5 (25...Bc5 26.Ba3 Rb8–+; 25...Rb8 26.Qc4 Be5 27.Ba3–+) 0–1. Labahn,Wolfgang – Illgner, DB–FS Endrunde, 1988.

7.d4 Bb4 8.Bc3 Qe7 =.

7.d4 Nd7 =.

7.Nf3 Bb4 8.Nc3 +=.

7.Nf3 Nd7 8.Be2 Bb4 9.0-0 Ne7 10.d4 e4 11.Nfd2 Bd6 12.Bh5 (12.Ba3 Ba3 13.Na3 Rc8=) 12...g6 13.Be2 Qc7 14.h3 0-0 15.Nc3 Rac8 16.Rc1 Qb6 (16...Qa5 17.Qb3 f5 18.f3 ef3 19.Rf3=) 17.Qb3+= Bf7 18.Rc2 Bb8 (18...Qa5 19.Rfc1+=) 19.Ba3 Qc7 The mate threat is Qh2 20.f4 Nb6 21.Rfc1 (21.Bc5 Qd7 22.Qb4 Rc7+=) 21...Qd7+= 22.Nf1 Rfd8 23.Bc5 Nf5 24.Bb6 ab6 25.Bg4 Be6 26.Bf5 gf5 27.Kh2 Bf7 28.Qb2 Rc7 29.a3 Rdc8 30.Ng3 Rc4 31.Qb3 Kh8 32.Na4 Rc2 33.Rc2 Bc7 34.Qb4 h5 35.Qb1 Bg6 (35...h4 36.Ne2+/–) 36.Nc3 Kh7 37.Nce2 (37.Qe1 Qe6+/–) 37...Ra8 38.Qa2 Rc8 39.Nc3 Bf7 40.Rc1 Bd6 41.Nge2 Rc4 ½–½. Bendig,Frank – Kaschner,Guenter, corr ICCF WT–I–1229, 1991.

8.Qc2 Nd7+= 9.Be2 Ne7 10.0-0 0-0 11.d3 Rc8 12.Qd2 Qb6 13.a4 a5 14.Nc3 ½–½. Waibel,Ulrich – Becker,Zeevi, compuserve, 1996.

8.Nc3 Nd7 9.Be2 Nh6 (9...Rc8 10.0-0+=) 10.d4 Nb6 11.a4 (11.e4 de4 12.Ne4 Bb4 13.Bc3 Bc3 14.Nc3 Rc8=) 11...Rc8 (11...0-0 12.Ba3+=) 12.a5 Nc4 13.Bc4 Rc4 14.0-0 Bb4 (14...0-0 15.a6 e4 16.Nd2=) 15.Ne2 e4 (worse is 15...Ba5 16.de5 fe5 17.Ne5+/–) 16.Nd2 Rc8 17.Nf4 Bf7 (17...Bg4 18.f3 ef3 19.Nf3 Ba5 20.Nd5=) 18.b6 (18.a6 Qe7=) 18...0-0 (18...Bd2!? 19.ba7 Be3 20.fe3 Ra8=) 19.ba7+= Ra8 20.Nb3 (20.Ba3 Ba3 21.Ra3 Ra7+=) 20...Ra7 The pressure on the isolated pawn grows (20...Qd6 21.Qe2 Rfc8 22.Qb5 Ra7 23.Rfc1=) 21.Ba3+= Ba3 22.Ra3 Qd6 23.Qa1 (23.Ra1 Rfa8+=) 23...g5 (23...Ng4 24.Nc5=) 24.Ne2 Bh5 (24...Ng4 25.Ng3+=) 25.Nc3 (better is 25.Ng3 Bg4 26.Nc5+/–) 25...Rc8?? (better is 25...Ng4 26.g3 Be8+=) 26.Nb5+– Qb8 27.Na7 Qa7 (27...Ng4 28.g3 Qa7 29.Qb2+–) 28.Nc5 Be2 (28...b6 29.ab6 Qb6 30.Qa2+–) 29.Rb1 (29.Rb1 Ba6 30.Rb6+–) 1–0. Diener,Rudolf – Poschmann,Hans, corr ICCF, 1988.

8.d4 e4 9.Nfd2 Nd7+=.

8.d4 e4 9.Nfd2 Ne7=.

8.Be2 Ne7 9.0-0 0-0 10.d3 (10.Ba3 Ba3 11.Na3 Qa5=) 10...Nd7+= 11.Nbd2 (11.Nc3 a6+=) 11...h6 (11...Qb6 12.d4+=) 12.a4= f5 (12...a6 13.ba6 ba6 14.Ba3 Ba3 15.Ra3=) 13.Rc1 (13.d4 e4 14.Ne5 Rc8=) 13...Ng6 Black prepares the advance f4 (13...a6 14.d4 e4 15.Ne5=) 14.Rc2 (14.Re1 f4=) 14...f4 (14...Qb6 15.Qa1=) 15.Qa1 (15.e4 d4=) 15...Rf7 (15...Qf6 16.e4 Rac8 17.Rc8 Rc8 18.d4=) 16.Rfc1 (16.e4 d4 17.Rfc1 Qa5=) 16...fe3 17.fe3 Nh4 (better is 17...Qe7=) 18.Ne5?? (better is 18.a5=) 18...Qg5–+ 19.Rc8 (19.Ng4 Bg4 20.Bg4 Qg4 21.Nf1–+) 19...Rc8 20.Rc8 Kh7 (20...Nf8 21.Bf1 Qe3 22.Kh1 Be5 23.Rc2–+) 21.Rh8 Kh8 22.Nf7 Bf7 23.Bg7 (23.Kf2 Qg2 (worse is 23...Ng2 24.Bg7 Kh7 25.Bd4 Qh4 26.Kf1 Qh2 27.Nf3–+) 24.Ke1 Bb4–+) 23...Qg7 24.Qg7 Kg7 1–0. DEFFM – Hogeye, freechess.org, 2016.

8.Be2 Ne7 9.Qb3 Nd7 10.0-0 Nc5 11.Qc2 0-0 12.Nc3 Rc8 13.d4 Bf5 Black plans e4 (13...Ne4 14.Qd3 Nc3 15.Bc3–+) 14.Qd2 (14.Qd1 Ne6=) 14...Ne4 15.Ne4 Be4 (15...de4 16.Nh4 Be6 17.Rad1+=) 16.Rac1 Bf3 (16...Ng6 17.Rc8 Qc8 18.de5 Ne5 19.Rc1=) 17.Bf3 e4 18.Be2 f5 19.f4 Ng6 20.Rc8 Qc8 21.Rc1 Qd8 22.Qe1 b6 23.g3 (23.Qg3 Qe7+=) 23...Qe7 24.a3 (24.Qf2 Qe6=) 24...h6 (24...Ba3!? 25.Ba3 Qa3+=) 25.Rc6 Ba3 (better is 25...Qf6!?=) 26.Ba3+– Qa3 27.Qc3 (better is 27.Rg6 Qe3 28.Qf2 Qc1 29.Kg2+–) 27...Qc3 28.Rc3 ½–½. Zimmer,Georg – Stummerer, corr SOK–90–66, 1990.

7.Qa4 Bf5 –/+.

7.Bc4 Qb6 8.Qb3 (better is 8.Nc3+=) 8...Bc5?? (better is 8...Nh6 9.Nc3 Bf5+=) 9.Bg8+/– Bf2 10.Kf1 Bd7 (10...Bc5 11.Nc3 Bd7 12.a4+– (12.Ne4?! Bb5 13.Ne2 Kd8+–)) 11.Nc3 Bb5?? (better is 11...Kd8+/–) 12.Nb5+– Rg8 (12...Nd7+–) 13.Qg8 Kd7 (13...Ke7 14.Ba3 Bc5 15.Qg7 Kd8 16.Qg8 Ke7 17.Qh7 Kd8 18.Qg8 Ke7 19.Bc5 Qc5 20.Qg7 Kd8 21.Qf6 Kc8 22.Nd6 Kd7 23.Qd8 Kd8 24.Nb7 Ke7 25.Nc5+–) 14.Qg7 (14.Qd5 Kc8 15.Rc1 Nc6 16.Qg8 Qd8 17.Qe6 Qd7 18.Qd7 Kd7 19.Kf2 Nb4 20.Rc7 Ke6 21.Rb7 Nd3 22.Ke3 Rd8+–) 14...Kc6 (14...Kd8 15.Qg8 Ke7 16.Ba3 Bc5 17.Qh7 Kd8 18.Qg8 Ke7 19.Bc5 Qc5 20.Qg7 Kd8 21.Qf6 Kc8 22.Nd6 Kd7 23.Qd8 Kd8 24.Nb7 Ke7 25.Nc5+–) 15.Qf6 (15.a4 Qd8+–) 15...Kb5 16.Qf2 Nd7 (16...Qf2 17.Kf2 Nc6 18.Rb1+–) 17.a4 (better is 17.Qe2!? Ka4 18.Qe4 Qb4+–) 17...Kc6 18.Rc1 (18.Rc1 Kd6 19.Ba3 Ke6 20.Qh4+–) 1–0. Labahn,Wolfgang – Heinicke,Frank, corr SOK–88–28, 1989.

7.Bc4 Bc5 8.Nc3 (8.Qe2 Bd4 9.Bd4 Qd4 10.Nc3=) 8...Bf2!–+ 9.Kf1 (9.Kf2 Decoy theme: f2 9...Qd4 A double attack) 9...Ne7 (9...Bf5 10.Bg8 Bg1 11.Qb3=) 10.Qb3 (10.Ne4 Bd4 11.Qh5 Ng6–/+) 10...Bb6 11.Ne4 Bf5 (11...f5 12.Be5 fe4 13.Bg7 Rf8 14.Bf8–+) 12.d3 (12.Bf7 Kf8 13.Re1–/+) 12...Be4 (better is 12...Bg6!?–+) 13.de4 g6 (13...Qd2!? 14.Bf7 Kf8+=) 14.Rd1 Qc7 15.Bc1 (15.Bf7 Kf8 16.Ba3 Bc5+=) 15...h5 (15...Rf8 16.Bh6+=) 16.Bf7= Kf8 17.Ba3 (17.Ba3 Kg7 18.Bd6+=). Labahn,Wolfgang – Marks,Ian Alexander, corr SOK–88–28, 1989.

7.Bc4 Nd7 8.d4 –/+.

7.Qh5 g6 8.Qe2 Bf5 –/+.

5.e3 Qa5 6.Nc3 (6.Bc3 Qc7+=) 6...b6 (6...d6!?=) 7.Ne4 Bb4?? (better 7...d5 8.Nc5 bc5 9.bc6 d4 10.Qh5 g6+=) 8.a3+- Bd2 9.Nd2 cb5 (9...a6+-) 10.cb5 d6 (10...Na6 11.Qg4 g6 12.ba6 Ba6 13.Ba6 Qa6 14.Be5 fe5 15.Qe4+-) 11.Qh5 g6 12.Qf3 (12.Qf3 Ne7 13.Qa8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 d5 6.Nf3 dc4 7.Bc4 cb5 8.Bb5 Bd7 9.Bd7 Qd7 (< 9...Kd7 10.d4 ed4 11.0-0+/–) 10.0-0 Nc6 11.Nc3 0-0-0 12.Ne4 Bb4 13.Bc3 Nge7 14.Rc1 a5? (14...Ba3 15.Rb1 f5 16.Ng3+=) 15.g3 (better is 15.Bb4 ab4 16.Qa4+–) 15...Nd5+= 16.Bb4 Ndb4 17.a3 Nd3 18.Rc3 b5?? (better is 18...Qd5 19.Qa4 f5=+) 19.Qc2+– Kb7?? (better is 19...Kc7+–) 20.Rd3! Qd3 (20...Qe7+–) 21.Nc5 Kb6 22.Nd3 e4 23.Qc5 Kc7 24.Qb5 ef3 25.Rc1 Rd6 26.Ne1 Rb8 27.Qa5 Kd7 28.Qf5 Ke7 29.Qf3 Ne5 30.Qe2 Ra8 31.d4 Nf7 32.Rc7 Kd8 33.Rf7 Ra3 34.Qb5 Raa6 35.Qb8 1–0. valpa – JerryReneau, playchess.de, 2003.

5.e3 d6 6.d4 ed4 7.ed4 Bb4 8.Bc3 Qa5 9.Qd2 Bf5?? (better is 9...Bc3 10.Nc3 Bf5+=) 10.Bb4+– Qa4 (10...Qc7 11.Qf4 Qe7 12.Ne2+–) 11.Bd6 Nd7 12.Nc3 Qa5 13.Nf3 cb5 14.Nb5 Qa4 (14...Qd2 15.Kd2 Kf7+–) 15.Nc7 Kf7 16.Na8 Nh6 17.Nc7 Ng4 18.c5 Be4 19.Bb5 Qa3 20.Bd7 Bf3 21.gf3 Qf3 22.Be6 Kg6 23.Rg1 Qe4 24.Kf1 f5 25.Bd5 Qd5 26.Nd5 h5 27.h3 Kf7 28.Qg5 Re8 29.Qh5 Ke6 (29...Kg8 30.Qe8 Kh7 31.hg4 g6 32.Rh1 Kg7 33.Be5) 30.Nf4 Kd7 31.Qf7 Kd8 (31...Re7 32.Qe7 Kc6 33.Qe8) 32.Qc7 1–0. Markus,Roland – Krahl,Wolfgang, DESC, 1999.

5.e3 Ne7 6.d4 ed4?? (better is 6...Bb4 7.Nd2 d6=) 7.Qh5+– Ng6 8.Qc5 de3 9.Qd6 (9.Qe3 Kf7 10.c5 Re8–+) 9...ef2 10.Kf2 cb5 0–1. pcmvr (2225) – dennism (2195), net–chess.com, 2006.

5.bc6 bc6 6.cd5 cd5 7.e3 Bb7 (7...Nc6 8.Nc3+= Nge7 9.Ba3=) 8.Nc3 (8.d4 Nc6 9.Nf3=) 8...Ne7 9.d4 Ng6 (9...Nbc6 10.Rb1=) 10.de5+= Ne5 11.Nf3 Bb4 (better is 11...Nf3!? 12.Qf3 Nd7+=) 12.Ne5+– fe5 13.Qh5 Ke7? (better is 13...Kf8 14.Qe5 Qe7 15.Qf5 Qf7+–) 14.Qe5 (14.Qh4 Ke8 15.Qb4 Qe7 16.Qa4 Nd7+–) 14...Kd7 15.Bb5 Bc6 (15...Kc8 16.Qf5 Nd7 17.Rc1+–) 16.Qg7 Be7 (16...Kd6 17.0-0-0 Bc3 18.Qc3 Bb5 19.Rd5 Kd5 20.Rd1 Ke6 21.Qe5 Kf7 22.Qf5 Ke8 23.Rd8 Kd8 24.Qb5 Nd7 25.Bh8 Rc8 26.Kd2 Rc5+–) 17.Nd5 Bb5 (17...Rf8 18.Ba3 Qa5 19.Bb4 Qb4 20.Nb4 Bb5 21.Nd5+–) 18.Rd1 Qa5 (18...Qf8 19.Ne7 Ke8+–) 19.Bc3 Qa3 Plans Be2 20.Ne7 Ke6 (20...Bd3 21.Rd3 Kc7 22.Qe5 Kb6 23.Bd4 Ka6 24.Ra3 Kb7 25.Rb3 Ka6 26.Qb5) 21.Qf6 1–0. pcmvr (2775) – macedon (2065), net–chess.com, 2008.

5.bc6 bc6 6.cd5 cd5 7.e3 Nc6 8.Nc3+= Nge7 9.Ba3=.

5.bc6 bc6 6.cd5 cd5 7.e3 Be7 8.Nc3 Be6 9.Bb5 Nd7 10.Nf3 Nh6 11.Rb1 0-0 12.Bc6 Nc5 13.Ba8 Nd3 14.Ke2 Ng4 15.Bd5 Bd5 16.Nd5 Qd5 17.Qb3 Qb3 18.ab3 Ndf2 (better is 18...e4!? 19.Bd4 a5+/–) 19.Rhc1 Ne4 (19...e4 20.Ne1 Nh1 21.Nc2+–) 20.Ra1 Ra8 21.Rc7 Bc5 22.d3 Bb6 23.Rc6 (23.de4?! Bc7 24.h3 Nh6=) 23...Nc5 24.Rb6! (24.Rb6 Nd3 25.h3+– (25.Kd3?! Rd8 26.Ke2 ab6+–)) 1–0. pcmvr (2860) – bolu (1750), net–chess.com, 2011.

5.bc6 bc6 6.e3 Bf5 7.Nc3 d4 8.ed4 ed4 9.Qe2+=.

5.cd5 Qd5 6.Nc3 Qe6 (6...Qd8 7.Qb3= (7.e3 a6 8.Qa4 Be6 9.Nf3 Ne7 10.Rc1 Nd7 11.ba6 Nc5 12.Qd1; 7.Nf3 cb5 8.Nb5 Be6 9.Rc1 Nc6 10.e3 a6 11.Nc3 Nh6 12.Be2; 7.Qa4 cb5 8.Qb5 Nc6 9.Rc1 Nge7 10.Nf3 Be6 11.Na4 Qa5 12.e3) 7...cb5 8.Qb5 Nc6 9.Nf3 Be6 10.Qb7 Nge7 11.Rb1 Rb8 12.Qa6; 6...Qd6 7.Nf3 (7.e3 a6 8.a4 Be6 9.Nf3 Ne7 10.d4 Nd5 11.Be2 ab5 12.ab5) 7...Nh6 8.e3 a6 9.bc6 Nc6 10.Rc1 Be6 11.Be2 Be7 12.0-0; 6...Qc5 7.e3 (7.Nf3 Nh6 8.e3 Bf5 9.e4 Bd7 10.Be2 Bd6 11.a4 Nf7 12.Ba3; 7.Qb3 Qb4 8.e3 a6 9.Bc4 Nh6 10.bc6 Nc6 11.Nf3 Bf5 12.0-0) 7...Qb4 8.Qc2 a6 9.a3 Qg4 10.h3 Qg6 11.Qa4 Ne7 12.Nf3; 6...Qf7 7.e3 Bb4 8.Nf3 Ne7 9.Qa4 Bc3 10.Bc3 0-0 11.Bd3 Bf5 12.e4) 7.e3 (7.Nf3 Ne7 8.e4 a6 9.Qa4 Nd7 10.d4 Nb6 11.Qa5 Nc4 12.Bc4) 7...c5 (7...a6 8.bc6 (8.Qa4 Ne7 9.Nf3 Nd7 10.bc6 bc6 11.Bc4 Nd5 12.0-0) 8...Nc6 9.Rc1= (9.Nf3 e4 10.Nd4 Nd4 11.ed4 Bd7 12.d5) 9...Bb4 10.Na4 Nh6 11.Nb6 Rb8 12.Bc4; 7...Ne7 8.Nf3 Nd5 9.Bd3 a6 10.bc6 Nc6 11.Be4 Nc3 12.Bc3) 8.Qa4 (8.Qc2 Ne7 9.Nf3 Nd7 10.Be2 Nb6 11.0-0 Ned5 12.Nd5) 8...Bd7 (8...Nh6 9.b6 (9.Bc4 Qg4 10.Nge2 Be6 11.Be6 Qe6 12.Qe4) 9...Nd7 (9...Nc6 10.Nb5 Bd6 11.Bc4 Qd7 12.ba7) 10.ba7+= Nf7 11.Qb3 Qb3 12.ab3; 8...Qg4 9.Bc4 Ne7 10.g3 Be6 11.Be6 Qe6 12.Qe4) 9.Bc4 Qg4 (9...Qb6 10.Nf3 Ne7 11.Qb3 Bg4 12.Bf7) 10.Kf1 (10.h3 Qg6+= (10...Qg2?? 11.Bd5 Qg6 12.Bb7+–) 11.Bd5 Bc8 12.b6) 10...Ne7= (10...Be6 11.Be6 Qe6 12.Qe4) 11.h3 Qg6 12.Nge2 (12.Nf3+–) 12...Na6 13.a3 (13.Rd1 Nc7=) 13...Nc7+= 14.Qb3 b6 (14...Nc8 15.Nd5 Nd5 16.Bd5+=) 15.e4 0-0-0 (15...Nc8!?=) 16.a4+= f5 17.d3 (17.a5 Be6 18.Be6 Qe6+=) 17...f4 (17...Be6!?=) 18.a5+/– f3 19.gf3 Be6 (19...Qh5 20.Ng1+/–) 20.Be6 Ne6 21.ab6 ab6 22.Ra8 (22.Nd5!? Nd4 23.Ra8 Kd7 24.Ra7 Ke8 25.Nc7 Kd7 26.Bd4 cd4 27.Ne6 Ke8 28.Nd8 Kd8 29.Qc4+–) 22...Kd7+/– 23.Rd8 (23.Nd5 Ra8 24.Nb6 Kd8 25.Na8 Nd4 26.Bd4 ed4+–) 23...Kd8+= 24.Rg1 (24.Nd5 Nd4 25.Bd4 ed4+/– (25...cd4? 26.f4+–)) 24...Qh6 25.Rg3 Nd4 26.Nd4 ed4 27.Ne2 Qf6 28.Bc1 h6 29.Qa2 Nc8 (29...g6 30.Bf4 g5 31.Qa8 Nc8 32.Qd5 Bd6 33.Rg5+–) 30.f4 g6 31.e5 Qf5 32.Qd5 Bd6 0–1. Hingst,Thomas (2085) – Czyz,Marco (1970), remoteschach.de, 2010.

5.e3 (---> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6 5.c4).

5.e3 Bd6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Bd6 5.c4 c6).

5.e3 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.c4 c6).

6.d4 Nd7 7.e3 Bd6 8.Nc3 Nb6 9.Rc1 =.

6.d4 e4= 7.Qb3 f5 8.Nd2 Nf6 9.Rc1 =.

6.e3 Bd6 7.Nc3 Be6 8.Qh5 g6 9.Qf3 e4 10.Qd1 Ne7 11.Nge2 Nd7 12.Nd4.

6.e3 Nh6 7.d4 (7.Nf3 Be6 8.Nc3 Nd7 9.Be2 Bd6 10.d4 e4 11.Nd2 0-0 12.Qb3; 7.Nc3 Be6 8.Nf3 Nd7 9.d4 e4 10.Nd2 Bd6 11.Qb3 Kf7 12.Be2) 7...Bb4 8.Bc3 Qd6 9.Qb3 Bc3 10.Nc3 Be6 11.de5 fe5 12.Rd1.

6.Nf3 A) 6...Be6 7.Nc3 (7.g3 Bd6 8.Nc3 Nd7 9.h4 Nb6 10.Rc1 Rc8 11.d3 Qd7 12.Bg2; 7.h4 Nd7 8.Nc3 Rc8 9.e3 Bd6 10.Bd3 Nh6 11.Qb1 Kf7 12.Bc2; 7.e3 Bd6 8.Nc3 Nd7 9.Rc1 Ne7 10.Bd3 0-0 11.0-0 Nb6 12.Be2) 7...Nd7 8.Rc1 Nh6 9.e4 d4 10.Nd5 Nc5 11.Qc2 Rc8 12.Bc4; B) 6...Kf7 7.e4 (7.g3 Ne7 8.Nc3 Be6 9.Bg2 Nd7 10.0-0 Rc8 11.Rc1 Nf5 12.Bh3; 7.Nc3 Be6 8.e3 Nd7 9.Be2 Bd6 10.0-0 Nb6 11.Rc1 Ne7 12.d4) 7...Nd7 8.Nc3 Nb6 9.Rc1 d4 10.Na4 Be6 11.Bd3 Bd6 12.0-0; C) 6...Ne7 7.e3 (7.Nc3 Be6 8.e3 Nd7 9.Be2 Nb6 10.Rc1 Nf5 11.Qb3 Kf7 12.d4) 7...Be6 8.Nc3 Nd7 9.Be2 Kf7 10.0-0 Rc8 11.d4 e4 12.Nd2; D) 6...Nh6 7.g3 (7.Nc3 Be6 8.Rc1 Nd7 9.e4 d4 10.Nd5 Nc5 11.Qc2 Rc8 12.Bc4; 7.e3 Be6 8.Nc3 Nd7 9.d4 e4 10.Nd2 Bd6 11.Qb3 Kf7 12.Be2; 7.d4 e4 8.Nfd2 Kf7 9.Nc3 Be6 10.e3 Nd7 11.Rc1 Qa5 12.Nb3) 7...Nd7 8.Bg2 Nb6 9.Na3 Bd6 10.0-0 0-0 11.Qb3 Be6 12.Rac1.

7.Nc3 Nd7 8.Nf3 Bd6 9.Be2 Ne7 10.0-0 0-0 11.Rc1 Rc8 12.d4.

7.Be2 Bd6 8.d4 e4 =.

7.Be2 Bd6 8.Nf3 Ne7 9.Nc3 Nd7 10.d4 e4 11.Nd2 0-0 12.Qb3.

7.Be2 Bd6 8.Bh5 g6+= 9.Bf3 (9.Be2 Nd7+=) 9...Ne7 10.Qb3 (10.Ne2 e4 11.Nd4 Bd7=) 10...Kf7 (10...Nd7 11.d4+=) 11.d4 e4 (11...Nd7 12.Nd2+=) 12.Bd1 Nd7 13.Ne2 f5 (13...Rc8 14.Nbc3+=) 14.a4 (14.Ba3 Ba3 15.Na3 Qa5 16.Nc3 Rhc8=) 14...Nf6 (14...Rc8 15.Ba3 Nb6 16.Bd6 Qd6 17.Nbc3=) 15.Nbc3 h5 (15...Kg7 16.Ba3=) 16.Ba3+= h4 17.Bd6 Qd6 18.Nf4 (18.h3 Rhc8+=) 18...Rac8 (18...g5 19.Ne6 Qe6 20.0-0+=) 19.f3 (19.Rc1 g5 20.Ne6 Qe6+=) 19...Rc7 (19...ef3 20.Bf3 g5 21.Nd3=) 20.0-0 Rhc8 21.Nce2 (21.Rc1 ef3 22.Bf3 Ne4 23.Be4 de4+=) 21...g5 (21...ef3 22.Rf3 Ne4 23.Ra2=) 22.fe4 (22.Nh3 Nh7=) 22...fe4 (22...Ne4!? 23.Ne6 Qe6+=) 23.Nh5= Neg8 24.Qb2 (24.Nf6 Nf6 25.a5 Ke7=) 24...Bg4 (24...Ke7 25.b6 ab6 26.Nc1+=) 25.Nf6 Nf6 26.Bb3 Kg6 (26...Ke8 27.Rac1=) 27.Rf2 Bh5 28.h3 Be2 29.Qe2 Nh5 (29...Rc3 30.Qa2 Rc1 (worse is 30...Re3 31.Raf1+=) 31.Rf1 Rf1 32.Rf1 Rc3+=) 30.Qa2 Ng3 31.Rd1 (31.Bd5 Rc1 32.Rf1 Nf1 (32...Rf1?! 33.Rf1 Nf1 34.Be4 Kg7 35.Kf1=) 33.Be4 Kg7–+) 31...Rc1 32.Rfd2 (32.Qd2!? R1c3 33.Ba2=) 32...Qf8+= The mate threat is Qf1 33.Rf2 Rd1 34.Bd1 Rc1 Threatening mate: Rxd1 35.Qb3?? (35.Qd2 Qa3 36.Re2 Ne2 37.Qe2–+) 35...Qb4!! (35...Qb4 36.Qd3 ed3–+) 0–1. Diener,Rudolf – Butze, corr, 1982.

7.Nf3 Bd6 8.Nc3 Nd7 9.Bd3 Ne7 10.0-0 0-0 11.Qb1 e4 12.Nd4.

7.g3 Nd7 8.Bh3 Bh3 9.Nh3 Nb6 10.Nc3 Nc4 11.Rb1 Qd7 12.Ng1.

7.Nh3 Nd7 8.Nc3 Nh6 9.Be2 Bd6 10.Bh5 g6 11.Bf3 e4 12.Be2.

5.d4 Bb4 6.Bc3? (better is 6.c3 Be7 7.e3=) 6...ed4?? (better is 6...Bc3 7.Nc3 ed4–/+) 7.Bb4+– c5 8.c3?? (better is 8.Bd2+–) 8...cb4= 9.cb4 (9.cd4 Bg4=) 9...Ne7 (9...Nc6 10.Qd2+=) 10.g3 (10.b5 Qa5 11.Qd2 Qb5+=) 10...0-0 (10...Nbc6 11.a3+=) 11.Bg2 (11.Nf3 Nbc6+=) 11...Nbc6 (11...Qb6+=) 12.b5 (12.Nd2 Be6 13.b5 Ne5+=) 12...Ne5 (12...Qa5!? 13.Nd2 Qb5 14.Qb3 Qb3 15.Nb3 Bf5–/+) 13.Qb3 (13.Nf3 Nf5+=) 13...Kh8 (13...Rf7 14.Nf3+=) 14.Nd2 Rb8 (14...Qb6 15.Ngf3+=) 15.Nh3 (15.Ngf3 Nf3 16.Bf3 Qa5=) 15...Qb6 (15...Bd7 16.Nf4+=) 16.0-0 (16.Nf4 Qa5+=) 16...Be6+= 17.Qb2 Bd5 (17...Nd5 18.Bd5 Bd5 19.Nf4+=) 18.Nf4 Bg2 19.Kg2 Rbd8 20.a4 (better is 20.Qb3 Rfe8 21.Rac1=) 20...a6 (better is 20...Nd5!? 21.a5 Qd6 22.Nd5 Qd5 23.Kg1 Rfe8=) 21.a5+/– Qb5 22.Qb5 ab5 23.Ne6 Ng4? (better is 23...Kg8+/–) 24.Nf8+– Rf8 25.h3 (25.Rfb1 Nc6 26.Rb5 Re8+–) 25...Ne5 26.f4?? (26.Rfb1 N7c6 27.Rb5 Rb8+–) 26...Nc4? (better is 26...N5c6+/–) 27.Nc4+– bc4 28.Rfb1 Rb8? (28...c3+–) 29.a6 b6 (29...Nc6 30.ab7 Kg8+–) 30.a7 Ra8 31.Rb6 h6 (31...Ng8 32.Rb8 Ra7 33.Ra7 h5+–) 32.Rb8 Rb8 33.ab8Q Kh7 34.Qf8 Ng6 35.Qf7 c3 36.Ra7 Ne5 37.Qg7 1–0. Verns – orodisilaer, internet, 2007.

5.d4 ed4 6.Qd4 Qd4 7.Bd4 Bf5 +=.

5.e4 Bc5 6.Bc3 =.

5.e4 h5 6.Bc4 b5 7.Bg8 Rg8 8.Qh5 g6 9.Qe2 Ba6 10.Qd1 b4 11.Ne2 Be2 (11...Rh8!?=) 12.Qe2+/– a5 13.c3 Qb6 14.Qc4 Rg7 15.0-0 c5 16.cb4 ab4 17.a3 Nc6 (better is 17...Qa6!? 18.Qc1 b3+/–) 18.Qe6 Be7 19.ab4 Ra1 20.Ba1 cb4 (20...Qb7 21.b5 Qb5+–) 21.Qc8 (better is 21.Rc1 Qb7 22.Rc6+–) 21...Nd8 22.d3 Qc6 23.Qc6 (better is 23.Qh3!?+/–) 23...Nc6= 24.Nd2 Na5 (24...Bc5 25.Nb3 Ba7 26.Rd1=) 25.Nf3 (25.Rc1 Bd8+=) 25...Nb3 26.Rb1 Nc5 27.d4 ed4 28.Nd4 (28.Rb4!? Ne4 29.Rd4+=) 28...Ne4= 29.Ne6 Rh7 30.Nc7 (30.Re1 f5+=) 30...Kd7 (30...Kf7 31.Re1 Rh5 32.Re4–/+) 31.Nd5+= Nd2?? (better is 31...Bd6 32.h3 Ke6 33.Nb4 Rb7+=) 32.Rd1+– (32.Rb4?! Bb4 33.Nf6 Ke6 34.Nh7 Be7+/–) 32...Nb3? (32...Nf3 33.gf3 Ke6+–) 33.Nf6 Ke6 34.Nh7 Na1 35.Ra1 Bc5 (35...Kd5+–) 36.Nf8 (36.Ng5 Kd5+–) 36...Kf7?? (better is 36...Bf8 37.Ra6 Bd6+–) 37.Nd7 Be7 (37...Bd6 38.Ra6 Ke6 39.Nf8 Kd5 40.Ng6+–) 38.Ra7 (38.Ne5 Ke6 39.Nc6 Bc5+–) 38...Ke8 (38...Ke6 39.Rb7 Kd5 40.Nb6 Ke6 41.f4+–) 39.Ne5 Bc5 40.Ng6 (better is 40.Rb7 g5 41.Nd3+–) 40...Ba7+/– 41.Nf4 b3 42.Nd3 Kd7 (42...Bd4!?+/–) 43.Kf1 Kd6 44.Ke1 Kd5 45.Kd2 Kc4 (45...Bd4 46.h4+–) 46.Nb2 (better is 46.g4!? Bd4+–) 46...Kd4 47.h4 Bc5 48.h5 (better is 48.Nd3!? Bf8+–) 48...Bb4 49.Kc1 Kc3? (49...Bf8+–) 50.Kb1 (50.Nd1 Kd4 51.Kb2 Bf8+–) 50...Ba3 51.h6 Bb2?? (51...Bf8 52.h7 Bg7+–) 52.h7 Bc1 (52...Ba3 53.h8Q Kc4 54.Qg8 Kd4 55.Qg4 Kd5 56.Qf5 Kd4 57.Qd7 Kc4 58.Qe6 Kd4 59.Qe3 Kc4 60.Qe4 Kc3 61.Qc6 Kd2 62.Qa4+–) 53.g3 (better is 53.Kc1 Kd4+–) 53...Kd2 (53...Bd2 54.h8Q Kd3 55.Qb2+–) 54.h8Q b2 55.g4 Ke2 (55...Kd3 56.Qh7 Ke2 57.Qf5+–) 56.Qh2 (56.g5 Bg5 57.Qe5 Kf1 58.Qg5 Kf2+–) 56...Kf3 (56...Bd2 57.g5! Bc3 58.Qh7+–) 57.Qg3 (57.g5!? Bg5 58.Qg3 Ke2 59.Qg5 Kf2+–) 57...Ke2 (57...Ke4 58.f3 Kd3 59.g5+–) 58.f4 (58.f4 Be3 59.g5+–) 1–0. pinecrest1981 – StillBill, Live Game Caissa's Web, 2004.

5.e3 d5 6.Nc3 Bf5 =+.

5.e3 d5 6.Nf3 Bd6 7.Bb5 =+.

5.e3 d5+= 6.Nf3 Bg4 7.h3 Bh5 8.Be2 Bg6 9.0-0 Nh6 10.d4 Nb4 (10...Qb6 11.Bc3 e4 12.Nfd2+=) 11.Bb5+= Kf7 12.Ba4 e4 13.Nfd2 Rc8 14.a3 Nc6 15.c4 dc4 16.Nc4 Kg8 17.Bb3 Bf7 18.Ncd2 f5 19.f3 ef3 20.Rf3 Ne7 (20...Qb6 21.Bf7 Nf7 22.Ra2+=) 21.e4 g6 22.ef5 Nef5 23.Rd3 Bg7 The pressure on the isolated pawn grows 24.Nf3 Kf8 (24...Bf6 25.Ne5+=) 25.Nbd2+/– Qb6 26.a4 a5 (26...Kg8 27.Rc1 Rc1 28.Qc1+/–) 27.Rb1 Qa6 (27...Kg8 28.Bc3 Qa7 29.Bf7 Nf7 30.Qb3+/–) 28.Ne4+– Bb3 (28...Kg8 29.Ne5 Re8 30.Nf7 Nf7 31.Bf7 Kf7 32.Qb3 Ke7 33.Rc1+–) 29.Ba3 Ke8 30.Rdb3 Qe6 (30...Qc4+–) 31.Neg5 Qd5 32.Qe2 1–0. Novikov,Konstantin – Kosatukhin,Andrei, Tula Club–ch op, 2000.

5.e3 d5 6.Nf3 g5 7.Bb5 (7.c4 Nge7=) 7...g4 (7...a6 8.Be2=) 8.Nh4 a6 9.Bd3 Nb4 (9...Qb6 10.Ba3 Ba3 11.Na3–/+) 10.Be2= Qa5 (10...Nh6 11.0-0=) 11.0-0 (11.a3 Nc6+=) 11...Bh6 (better is 11...Qa4!? 12.Na3 b5=) 12.a3 Nc6 13.Bg4 Bg4 14.Qg4 d4? (better is 14...Qb5 15.Qe6 Kd8+/–) 15.Qe6+– Nge7? (15...Kd8 16.Nf5 Bf8 17.ed4 Qb5+–) 16.Qf6 Kd7 (16...Rg8 17.Qh6 Qb5 18.Bc1+–) 17.Qh6 (17.Qh6 Qb5 18.Ra2+–) 1–0. Wall,Bill – Musak, internet, 2003.

5.e4 Qb6 6.Bc3 Bc5 7.Qh5 Kd8 =.

5.e4 Qb6 6.Bc3 Bc5 7.Qh5 g6 +=.

5.a4 ab5 6.ab5 Ra1 7.Ba1 d5 8.c4 (8.d4 Bf5=) 8...Nh6 (better 8...Be6=+) 9.Ne2 (9.d4 Bf5 10.cd5 Qd5=) 9...Bg4 (9...dc4!? 10.Qa4 Bf5-/+) 10.f3 Be6 11.cd5 cd5 12.Ng3 Bd6 13.Be2 0-0 14.0-0 Nf5 (14...Qc7 15.Qb3=+) 15.Nf5= Bf5 16.Nc3 Be6 17.d4 e4 (better 17...Qb6=) 18.fe4+- de4 19.Ne4 Bc7 20.Nc5 Qd6 The mate threat is Qxh2 21.Nb7?? (better 21.g3 Bf7 22.Nb7+-) 21...Qh2 22.Kf2 Bg3 23.Kf3 Bd5 (23...Qh4 24.Nc5 Qg4) 24.e4-+ Bb7 (better 24...Qh4 25.Ke3 Qe4 (worse 25...Bb7 26.Bc4 Kh8 27.Qf3-+) 26.Kd2 Re8-+ (26...Bb7?! 27.Qb3 Bd5 28.Qg3=)) 25.Rh1=+ Be4 26.Ke4 Qg2 27.Bf3 Re8 28.Kd3 Qf2?? (28...Qa2 29.Rh5 g5-+) 29.Be4 f5 30.Bd5 Kh8?? (better 30...Kf8 31.Qf3 Qf3 32.Bf3 f4=) 31.Qh5 Re3 32.Kc4 Qc2 33.Kb4 Bd6 34.Ka5 Qc7 (34...Ra3 35.Kb6 Qc7) 35.b6 Ra3 36.Kb5 (36.Kb5 Qd7 37.Bc6 Qc6) 1-0. aravind555 - xaris75 (1695), lichess.org, 2018.

5.ba6 ba6 6.c4 c5? (6...d5 7.d4=) 7.Nf3 (better is 7.Be5!? Bb7 8.Bf4+/–) 7...Nc6 8.Be2 (8.Nc3 Rb8 9.Rb1 Nge7=) 8...d5 (8...Rb8 9.Qc2+=) 9.cd5+= Qd5 10.Nc3 Qe6 11.0-0 (11.Qa4 Bd7 12.Nb5 Kd8+=) 11...Bd6 (11...Rb8 12.Rb1=) 12.Ne4+= Rb8 (12...Be7 13.Qa4+=) 13.Nd6 (13.Bc4 Qd7 14.Ba3+/– (14.Nd6?! Qd6 15.Bc3 Nge7+=)) 13...Qd6= 14.d4?? (better is 14.Ba3=) 14...Rb2–+ 15.dc5 (15.Nd2 Qe6 16.dc5 Qd7–+ (worse is 16...Ra2 17.Ra2 Qa2 18.Bc4–/+)) 15...Qc5 16.Rc1 Qb6 17.Nd2 Nge7?? (better is 17...Be6–+) 18.Nc4+= Qb4 (18...Qb8 19.Bh5 g6 20.Bf3+=) 19.Nb2 (19.Nd6 Kf8 20.Nc8 Rd2 (20...Ra2? 21.Ne7 Ke7 22.Rc6+–) 21.Ne7 Rd1 22.Rfd1 Ke7 23.Rc6 Ra8+=) 19...Qb2+= 20.Qb3?? (better is 20.Bh5 g6 21.Bf3+=) 20...Qe2–+ 21.Qa4 (21.Rc5 Bf5–+) 21...Bd7 (21...Qb5 22.Qa3–+) 22.Rfe1 (22.Rfd1 h6–+) 22...Qb5 (22...Qb5 23.Qa3 Be6–+) 0–1. gtate (1815) – gfry (1785), net–chess.com, 2002.

5.ba6 Na6 6.d4 =.

5.c4 d5 6.a4 Bb4 7.Qh5 g6 8.Qh4 Be7 9.cd5 cd5 10.a5 f5 11.Qa4+/– Bf6 12.Nf3 e4 13.Bf6 Qf6 14.Nd4 Bd7 15.Nc3 Ne7 16.Be2 0-0 17.0-0 ab5 18.Ndb5 Nbc6 19.Nc7 Ra5 20.Qb3 Qe5 21.Qb7? Ra7?? 22.Qb3?? Ra1 23.Ra1 Qc7 24.Nd5 Nd5 25.Qd5 Kg7 26.Rc1 Rf6 27.Bb5 Rd6 28.Qe5? Ne5 29.Rc7 Kf6 30.Ba6 Rd2 31.Kf1 Be6 32.Rh7 Nd3 33.Bd3 Rd3 34.Rc7 Bb3 35.Ke2 Bd1 36.Ke1 Bg4 37.h3 Rd1 0–1. elsh1403 – hugr (1800), internet, 2011.

5.Qh5 g6 6.Qh4 ab5 7.f4 Bd6 8.Nf3 Qc7 9.Bd3+= Kf7 10.fe5+– Be5 11.Ne5 fe5 12.0-0 Kg7 13.Nc3 d6= 14.Ne4 Bf5? 15.Rf2 d5?? 16.Ng5 Ne7?? 17.Raf1 Qd7?? 18.Be5+– (18.Be5 Kf8 19.Bh8+–) 1–0. elsh1403 – hugr (1820), internet, 2011.

5.Bb5 a6 6.Ba4 b5 (6...Nc6 7.Nf3=) 7.Bb3 Bb7 8.Nf3 d5 9.0-0 Nh6 (9...Bd6 10.a4=) 10.d4 e4 11.Nfd2 Bd6 (11...Qc7 12.Nc3 Qd6 13.Qh5 g6 14.Qd1=) 12.Nc3 (12.Qh5 Kf8 13.Nc3+/–) 12...Nd7? (better is 12...g6=) 13.Bd5 (13.Nd5 f5 14.Qh5 Kf8+–) 13...Bd5 14.Nd5 (14.Nce4 Be7–/+) 14...Nb6 (better is 14...f5 15.Qh5 Kf8+–) 15.Ne4?? (better is 15.Nb6 Qb6 16.Qh5 Nf7 17.Ne4+–) 15...Bh2?? (better is 15...Nd5 16.c4 bc4 17.Qa4 Kf7 18.Qc4 Kg6–/+) 16.Kh2+/– Qd5 17.Nc5 0-0 (17...Nc4 18.Rb1+=) 18.a4 ½–½. gtate (2055) – pwillows (2020), net–chess.com, 2006.

5.Bb5 a6 6.Bc4 b5 7.Bg8 Rg8 8.Qh5 g6 9.Qh7 Rg7 10.Qh4 Bb7 11.Nf3 Bf3 (11...Nc6 12.a4=) 12.gf3+= Nc6 13.Nc3 Nb4 (13...d5 14.f4+=) 14.0-0-0 Rc8 15.a3 Nc6 16.Nd5 Be7 (16...f5 17.Qd8 Kd8 18.f4+-) 17.Qh8 (17.Rdg1 Kf7+-) 17...Kf7+= 18.Qh4 (18.Qd8 Rd8 19.f4 ef4 20.Nf4 Rh8+=) 18...f5 (18...Ke8!?=) 19.Qh6 Bg5 20.Qh3 Qh8 (20...Ke6 21.e4 Qh8 22.Qg2+=) 21.Qg3 (21.Qh8!? Rh8 22.f4+-) 21...Bh4+- 22.Qh3 (22.Qg2 Qf8+-) 22...Bf2 (22...Ke6!? 23.Nb4 Nb4 24.ab4 d6+=) 23.Qg2+- Bh4 24.f4 Rh7 (24...Ke8 25.fe5 Qf8 26.Rdg1+-) 25.fe5 (25.Nb6 Rc7 26.Nd7 Qc8+-) 25...Qg8 (25...Ne5 26.Nf4 Bf6 27.Rdg1+-) 26.Nf4 (26.Nb6 Rc7 27.Qd5 Kg7+-) 26...Re8? (better 26...Ne7 27.Rhg1 Rh6+-) 27.Qd5 Kf8 (27...Ke7 28.Qd6 Kd8 29.Rdg1+-) 28.Qd6 Be7 (28...Ne7 29.Qd7 Qf7+-) 29.Ng6 Kf7 30.Ne7 Re7 31.Qf6 (better 31.Rdg1 Rh8 32.Rg8 Rg8 33.Qd5 Kf8 34.Rf1+-) 31...Ke8 32.Qf5 Rhf7 33.Qe4 Qh7 34.Qh7 Rh7 35.d4 Rh3 36.Kd2 (better 36.Rdg1 Re3 37.Rg8 Kf7 38.Rg5+-) 36...b4? (better 36...Na5+-) 37.ab4 Nb4 (37...Reh7 38.Bc3+-) 38.Ba3 a5 39.c3 Nd5 40.Be7 Ke7 41.Rde1 a4 (41...Nb6+-) 42.Kc2 (42.c4 Nb6 43.Kd3 Kd8+-) 42...Rh6 (42...Ne3 43.Re3 Re3+-) 43.e4 Nf4 44.Ra1 Ra6 45.Ra3 d6 (45...Ra8 46.h4+-) 46.ed6 Kd6 47.h4 (47.Rha1!? Rc6+-) 47...Kc7 48.h5 Re6 (48...Rh6 49.Ra4 Rh5 50.Rh5 Nh5 51.e5+-) 49.h6 Rc6 (49...Re4 50.h7 Re2 51.Kd1 Re8+-) 50.h7 Rh6 51.e5 (51.Rh6 Ne6 52.h8Q Nd4 53.cd4 Kd7 54.Qg7 Kd8 55.Rh8) 51...Ne2?? (51...Rh1 52.Ra4 Kb7 53.Rb4 Kc8 54.Rb6 Rh7 55.Rf6+-) 52.Rh5 (52.Rh6 Nf4 53.h8Q Ne6 54.Rh7 Ng7 55.Qg7 Kb6 56.Qc7 Kb5 57.c4 Kb4 58.Qc5) 52...Nc3 (52...Rh5 53.Ra4 Kb6+-) 53.d5 (53.Rh6 Nd5 54.Rc3 Kb8 55.h8Q Ka7 56.Qg7 Nc7 57.Rc7 Kb8 58.Rh8) 53...Rb6 (53...Rh5 54.Kc3 Rh7 55.Ra4+-) 54.Rh6 White plans e6 (54.Rc3 Kb8 55.h8Q Ka7 56.Rh7 Rb7 57.Rb7 Kb7 58.Qh7 Kb6 59.Qc7 Ka6 60.Rc6 Kb5 61.Qb6) 54...Rb7 (54...Rh6 55.Kc3 Rh7 56.Ra4 Kb6+-) 55.Kd3 (55.Rc3 Kb8 56.h8Q Ka7 57.Rcc6 Rb2 58.Kb2 a3 59.Ka3 Kb7 60.Rh7) 55...Rb8+- 56.e6 (56.h8Q Rh8 57.Rc3 Kb7 58.Rh8 Kb6 59.Rc6 Kb5 60.Rb8 Ka5 61.Kc4 a3 62.Ra8) 56...Kd6 (56...Nd5 57.Ke4 Kc6 58.e7 Kc5+-) 57.Rg6 (57.Rg6 Nd5 58.Rg8+-; 57.Rc3 Kd5 58.e7 Re8 59.h8Q Rh8 60.Rh8 Ke5 61.e8Q Kf5 62.Rh5 Kf6 63.Rc6 Kg7 64.Rg6) 1-0. aravind555 - Klahans590, lichess.org, 2019.

5.Bb5 a6 6.Bd3 Qe7 (6...Nh6 7.c4=) 7.Qh5 g6 (better is 7...Qf7!? 8.Qf7 Kf7 9.Bc4 Ke8+=) 8.Bg6!+– hg6 (8...Kd8 9.Nc3+–) 9.Qh8 (9.Qh8 Qf7 10.Ba3+–) 1–0. Wall,Bill – Odoherty, Microsoft Gaming Zone, 1999.

5.Bb5 Qb6 6.a4 a6-+ 7.Nc3 ab5 8.ab5 Ra1 9.Qa1 Ne7 10.Qa8 Qc7 11.b6 (11.Ba3 d6-+) 11...Qb6 12.Na4 (12.Ba3 Nbc6-+) 12...Qd6 (12...Qc6 13.Nf3-+) 13.Ne2 Nec6 (13...Na6 14.Nac3-+) 14.Nb6 (14.Nec3 Qb4 15.Bc1 d5-+) 14...Kd8 (14...Qb4 15.Nc8 Qb2 16.0-0-+) 15.Nc3 (15.Bc3 Qa3 16.Qa3 Ba3-+) 15...Qb4 16.Nca4 Bc5 (16...d5 17.0-0-+) 17.c3 Qa5?? (better 17...Qb5 18.Nc8 Kc8 19.Nc5 Qc5-+) 18.Qa5= Na5 19.Nc5 d6 20.Nc8 (20.Nca4 Be6 21.d4 Nd7 22.de5 Nb6 (22...de5?! 23.Nd7 Bd7 24.Nc5-/+; 22...Ne5?! 23.Ba3-/+) 23.Nb6 Kc7 (23...de5?! 24.Na4-/+; worse 23...fe5 24.e4-/+) 24.ef6 gf6-+) 20...dc5=+ 21.Nd6 Kc7 22.Nb5 (22.Ne4 c4=+) 22...Kb6 23.Na3 Nbc6 (23...c4 24.Ke2=+) 24.Ke2 Rd8 25.Rb1 (25.d3 c4 26.d4 f5=) 25...Ka6 (25...c4 26.e4=+) 26.c4= Nb4 (26...e4 27.f3 f5 28.Bc3= (worse 28.Bg7 Rg8-/+)) 27.Bc3+= Nac6 (27...Nbc6 28.d3+=) 28.Nb5 Kb6 29.h4 (29.d4 ed4 30.ed4 Rd7+-) 29...Nd3 30.g4 (30.Nd4 Ka7 31.Ne6 Rd7+=) 30...Ncb4= 31.Bb4 (31.g5=) 31...Nb4 (31...cb4!? 32.Nd4 ed4 33.Kd3 Kc5=+) 32.f3 (32.d4 Ra8+=) 32...Kc6 (32...Re8 33.d3=) 33.Rb2 (33.d4 Ra8 34.d5 Kd7+-) 33...b6 (33...h5 34.d4=) 34.Na7 (34.d4!?+=) 34...Kb7= 35.Nb5 Kc6 (35...Nd3 36.Rc2=) 36.Nc3 (36.Nc3 g6 37.Na2=; 36.d4!?+=) 1-0. aravind555 (1810) - Frobozky (1800), lichess.org, 2020.

5.Bb5 Nc6?? 6.Nf3 d5 7.0-0 Nh6 8.c4 (8.Nc3 a6 9.Ba4 Bg4=) 8...Be6 (8...a6!? 9.cd5 ab5 10.dc6 bc6=) 9.cd5+= Bd5 10.Nc3 Be6 (10...a6 11.Nd5 Qd5 12.Ba4+=) 11.d4 Be7? (11...a6 12.Bc6 bc6 13.Qa4+-) 12.de5 (better 12.d5 Bd7 13.dc6 bc6 14.Be2+-) 12...0-0+- 13.Bc6 bc6 14.ef6 (14.Qd8 Rfd8 15.Nd4 Bd7+-) 14...Bf6+= 15.Rb1 (15.Nd4 Bf7+=) 15...Qd1 16.Rfd1 Rab8 (16...Bc3 17.Bc3 Ba2 18.Rb7+-) 17.Nd4+- Bd7 18.Nb3 (18.Ba3 Rfe8+-) 18...Bf5 19.e4 (19.Rbc1!?+-) 19...Bc3= 20.Bc3 Be4 21.Rd7 The mate threat is Rxg7 21...Bb1?? (better 21...Rf7 22.Rf7 Kf7=) 22.Rg7 Kh8 23.Rg6 Rf6 24.Bf6 1-0. aravind555 - Rajatakur1 (1635), lichess.org, 2018.

5.Bb5 Nc6?? 6.Qh5 g6 7.Qh4 Qe7 8.f4?? (8.Nc3 a6 9.Bc4 Qb4=) 8...ef4?? (better is 8...Qb4 9.Ba3 Qb5–+) 9.Qf4= Bg7 10.Ba3 Qe5 11.Nc3 Qf4 12.ef4 Nge7 13.Bc4 Nd4 14.0-0-0 f5 15.Nge2 Ne2 16.Ne2 d5 17.Bb5 Bd7 18.c4 (18.Rhe1!? Bb5 19.Nc3 Bc3 20.Re7 Kd8 21.dc3+=) 18...dc4+= 19.Bc4?? (better is 19.Nc3 Bb5 20.Nb5–/+) 19...Rc8–+ 20.Kb1 Rc4 21.Nc3 Kf7 (21...Rf4?! 22.Rhe1 Re4 23.Ne4 fe4 24.d3–+) 22.Rhe1 Re8 23.Re3 Bc3 24.dc3 Rf4 (24...Bc6 25.Rd4 Rd4 26.cd4 Bg2 27.Be7 Re7 28.Re7 Ke7 29.Kc2–+) 25.Rde1?? (better is 25.Rd7 Re4 26.Re4 fe4 27.Rb7=) 25...Nd5–+ 26.Re8 Be8 27.c4 Nc3 (better is 27...Rc4!? 28.Rc1 Rc1 29.Kc1–+) 28.Kc2 Ne4 29.g3 (29.Re2–+) 29...Rf2 30.Kb3 Rh2 31.Rd1 Bc6 32.Rd8 Rh3 33.Ra8 a6 34.Rh8 h5 35.Rh7 Kf6 36.Be7 Ke6 37.Bd8 Rg3 38.Kb4 Rg4 39.Re7 Kd6 40.Rg7 h4 41.Bc7 Ke6 42.Bd8 h3 43.Re7 Kd6 44.Rh7 Nf2 45.Bc7 Ke6 46.Bb8 Rg5 (46...Bd5 47.Ba7 Rc4 48.Ka5–+) 47.Bc7 Rh5 48.Rg7 Kf6 49.Rd7 h2 (49...h2 50.Bh2 Bd7–+) 0–1. elsh1403 – vejtaha, internet, 2011.

5.c4 d6 6.Nc3 Bd7 7.a4 Ne7 8.Nf3 0-0 9.Qb3 Be6 10.Ne4 (10.d4 ed4 11.ed4 Bb6=) 10...Nd7 (10...Bb6!?=) 11.d4+= ed4 12.ed4 Bb6 13.Nd6 Qc7 14.Ne4 Nf5 15.Bd3 Rfe8 16.d5?? (16.0-0 Rad8+–) 16...Bf7?? (better is 16...cd5 17.cd5 Nc5–+) 17.0-0+/– Bh5?? (17...cd5 18.cd5 Nd6 19.Rac1+/–) 18.Bc2 (better is 18.c5 Nc5 19.Nc5 Bc5 20.d6 Bf7 A) 21.Bf5?! Bd6 (21...Bb3?? 22.dc7 Bd6 23.bc6 bc6 24.Bd7+–) 22.Qc2 h6+–; B) 21.dc7 Bb3 22.Bf5+–) 18...Bf3 19.Qf3 (19.gf3?! Nd4 20.Bd4 Bd4+=) 19...Bd4 20.Qb3 (20.Nc3 Ne3 21.fe3 Re3+–) 20...c5? (20...cd5 21.cd5 Qf4 22.Rae1+/–) 21.Rab1 (21.Nf6 Nf6 22.Bf5 Bb2 23.Qb2 Qf4 24.Be6 Kh8+–) 21...Ne5? (21...Bb2 22.Qb2 (22.Rb2?! Nd4 23.d6 Qd8=) 22...Nd4 23.Rfe1+/–) 22.Nc5 Ng4 (22...Qc5 23.Bf5 Discovered attack; 22...Bc5 23.Bf5 Discovered attack) 23.g3 (23.Qh3 Nf2 24.Rf2 Bf2 25.Kh1=) 23...Ngh6?? (better is 23...Bf2 24.Kh1 Re3 25.Bf5 Rb3 26.Be6 Kh8 27.Nb3 Qc4–/+) 24.Ne6+– Qe5 (24...Re6 25.de6 Bb2 26.Rb2+–) 25.Rfe1 Qd6 (25...Re6 26.de6 Qc5 27.Qf3 Bb2 28.Qb7+–) 26.Nd4 Rf8 (26...Nd4 27.Bd4 b6+–) 27.Nf5 Nf5 28.Bf5 Kh8 (28...Rfe8 29.Qc2+–) 29.Ba3 Qb6 30.Bf8 Rf8 31.Re6 (31.Qe3 Qc7 32.Qe7 Qe7 33.Re7 g6+–) 31...Qc7 32.Rbe1 Qf7 33.Qe3 g6 34.Re7 1–0. madik – yvopt, gameknot.com, 2009.

5.Bc4 d5=+ 6.Bb3 cb5 (6...Ne7 7.d4 ed4 8.ed4=) 7.Nc3 (7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.Qh5 g6 11.Qd5 Qd5 12.Bd5 Nc6=) 7...Ne7 8.Nb5 (8.Qh5 Kf8=) 8...a6 (8...0-0 9.Nf3=+) 9.Nc3= Nbc6 (9...Be6 10.Nf3=) 10.Nge2 (10.Qh5 Kf8=) 10...d4 (10...Bg4 11.h3 Bh5 12.0-0=+) 11.Ne4= Ba7 (11...b6 12.ed4 Nd4 13.Nc5 bc5 14.Nd4 cd4 15.Qh5 Ng6 16.f4+=) 12.ed4 Nd4 13.Nd4 Bd4 (worse 13...ed4 14.Qh5 Kd7 15.Ba3+-) 14.Bd4 (14.c3 Ba7+=) 14...Qd4= (worse 14...ed4 15.Qh5 Ng6 16.0-0+-) 15.d3 Bf5 16.Qh5? (16.c3 Qd7=) 16...Ng6 (better 16...Bg6 17.Qd1 Be4 18.de4 Qe4 19.Kf1 Rd8-/+) 17.0-0 Be4 18.de4 Qe4 19.Rad1 (19.Rfd1 Rb8=) 19...Ke7 (19...Rd8!?=) 20.Bd5 Qb4? (20...Qc2 21.Qg4 Qc7 22.Qb4 Ke8 23.Bb7+-) 21.Bb3?? (21.Rb1 Qc5 22.Rb7 Kf8 23.Rd1 Qc2 24.Rf7 Ke8 25.Qg4+- (25.Ba8?! Kf7 26.Bd5 Ke7+=; worse 25.Rg7 Rd8+-)) 21...Rhd8?? (better 21...Rad8=) 22.Qh7+- (22.Qh7 Qb3 23.cb3+- (23.Qg6?! Qf7 24.Qe4 Kf8=)) 1-0. aravind555 – pointdeer, lichess.org, 2018.

5.d4 Bb4 6.c3 Bd6 +=.

5.d4+= ed4?? 6.Qh5+– g6 7.Qc5 Ne7 (7...de3 8.Qe3 (worse is 8.fe3 d5+–) 8...Kf7 9.Nf3+–) 8.Qd4 (worse is 8.ed4 d6 9.Qc4 a6 10.bc6 Nbc6+–) 8...Rf8 (8...0-0 9.Bd3+–) 9.c4 (9.Qh4 d6+–) 9...cb5 (9...d5 10.cd5 Qd5 11.Nd2+–) 10.cb5 d5 (10...d6 11.Nf3+–) 11.Nc3 Be6 (11...Qa5 12.Nf3+–) 12.Nge2 Kf7 (12...Qd7 13.Nf4+–) 13.Nf4 (13.Ne4 Ng8 14.Nc5 Bc8+–) 13...Qb6 (13...Nf5 14.Qd2+–) 14.Ne6 (14.Qb6 ab6 15.Rd1 g5 16.Ne6 Ke6 17.Nd5 Nd5+–) 14...Qe6 15.Nd5! Nd5 Theme: Interference (15...Qd5 16.Qd5) 16.Bc4 Rd8 17.Rd1 Rd6 (17...Qe7 18.Bd5 Ke8 19.Qf6 Qf6 20.Bf6+–) 18.Ba3 (18.Ba3 Rd7 19.Bd5 Rd5 20.Qd5 Qd5 21.Rd5+–; 18.Bd5 Rd5 19.Qd5 Qd5 20.Rd5 a6+–) 1–0. Woelfelschneider,Peter (1700) – Lauterbach,Uwe (1700), T4–03.09, 2002.

5.Nf3 a6 6.c4 (6.d4 ed4 7.ed4 Bb6+=) 6...ab5 7.cb5 Ne7 (7...Be7 8.d4 e4 9.Nh4=) 8.bc6 (8.d4 ed4 9.Bd4 Bd4 10.Nd4 d5=) 8...bc6 (8...Nbc6 9.d4 Bb4 10.Bc3=) 9.Bc4 (9.d4!? ed4 10.Bd4 Bd4 11.Nd4=) 9...d5+= 10.Bb3 (10.Be2 Qb6 11.Qc2 Bf5+=) 10...Ba6 (10...e4 11.Nd4+=) 11.Nc3 (11.d4 ed4 12.Nd4 Qd6=) 11...Bb4 (11...e4 12.Nd4 Bd4 13.ed4+=) 12.a3= Ba5 (12...Bd6 13.e4=) 13.d3 (13.d4 ed4 14.Qd4 Nf5=) 13...d4 (13...Qb6!? 14.Ke2 0-0+=) 14.ed4+= ed4 15.0-0?? (better is 15.Nd4 Qd4 16.Qh5 Ng6 17.Qa5+=) 15...dc3–+ 16.Bc3 (16.Bc1 Bd3 17.Re1–+) 16...Bc3 17.Rc1 Bb2 18.Rc2 Ba3 19.Ra2 Bb4 20.Re1 (20.Bc4 Qd6–+) 20...Be1 (20...Be1 21.Ne1 Qd6–+) 0–1. gtate (1960) – hermanogris (2025), net–chess.com, 2006.

5.Nf3 d5 6.d4 ed4 7.Nd4 =.

5.Nf3 Ne7 6.Bc4 cb5 7.Bb5 (7.Bb3 A) 7...d5 8.Qe2 (8.0-0 Nbc6 9.Qe2 e4 10.Qb5 Qb6 11.Qb6 Bb6 12.Nd4 Kf7 13.Nb5) 8...a6 9.Nc3 Nbc6 10.0-0 0-0 11.d4 ed4 12.Ne4 Bb6 13.ed4; B) 7...Nbc6 8.Qe2 (8.d4 ed4 9.ed4 Bb6 10.d5 Na5 11.d6 Nb3 12.ab3 Ng6 13.0-0; 8.0-0 d5 9.Nc3 b4 10.Na4 Bd6 11.d4 b5 12.Nc5 Qb6 13.c3) 8...d5 9.Qb5 Bb4 10.Nc3 a6 11.Qe2 Na5 12.0-0 0-0 13.e4; 7.Be2 A) 7...0-0 8.Nc3 (8.0-0 Nbc6 9.Nc3 d5 10.d4 ed4 11.ed4 Bb6 12.Nb5 a6 13.Nc3; 8.d4 ed4 9.ed4 Bb6 10.Bb5 Nbc6 11.0-0 d5 12.Re1 a6 13.Be2) 8...Nbc6 9.Ne4 Qb6 10.0-0 d5 11.Nc5 Qc5 12.d4 Qb4 13.Rb1; B) 7...b4 8.0-0 (8.d4 ed4 9.ed4 Bb6 10.d5 Ng6 11.0-0 0-0 12.Nd4 Re8 13.Nd2) 8...0-0 9.d4 ed4 10.ed4 Bb6 11.d5 d6 12.a3 Na6 13.Re1; C) 7...d5 8.d4 ed4 9.Bd4 Bd4 10.Nd4 0-0 11.Bb5 Nbc6 12.0-0 Nd4 13.Qd4; D) 7...Nbc6 8.Nc3 (8.0-0 0-0 9.Nc3 d5 10.d4 Bb6 11.de5 fe5 12.Bb5 Bg4 13.Be2; 8.d4 ed4 9.ed4 Qa5 10.Nbd2 Ba3 11.Ba3 Qa3 12.Bb5 0-0 13.0-0) 8...0-0 9.0-0 d5 10.d4 ed4 11.ed4 Bb6 12.Bb5 Bg4 13.h3) 7...0-0 (7...Qb6 8.Nc3 e4 9.Nd4 Bd4 10.ed4 a6 11.Qg4 0-0 12.Qe4 ab5 13.Qe7) 8.0-0 (8.Nc3 a6 9.Bd3 Nbc6 10.Ne4 Qa5 11.a3 d5 12.Bc3 Qb6 13.Rb1) 8...Nbc6 (8...d5 9.d4 ed4 (9...a6 10.Bd3 ed4 11.Bd4 Qd6 12.Nbd2 Nbc6 13.Bc5) 10.Nd4= (10.Bd4 Bd6 11.Nc3 Nbc6 12.e4 Qa5 13.ed5) 10...Nbc6 11.Nc3 a6 12.Bd3 Bd4 13.ed4; 8...a6 9.d4 ab5 10.dc5 Na6 11.Qd6 Nb4 12.Qd2 Na6 13.Qd6) 9.a3 (9.d4!? Bd6 (9...ed4 10.ed4 Bb6 11.d5 a6 12.Be2 Ne5 13.d6) 10.d5+= (10.Nc3 ed4 11.ed4 a6 12.Bc4 Kh8 13.Re1) 10...Nb4 11.Nc3 Qb6 12.Bc4 Na6 13.Nb5) 9...d5 (9...e4 10.d4 Bb6 11.Nfd2 a6 12.Bc6 bc6 13.Ne4) 10.c4 (10.d4!? should be considered 10...ed4 11.ed4= Bd6 12.Nc3 a6 13.Bd3) 10...d4–/+ (10...e4 11.d4 ef3 12.dc5 fg2 13.Kg2) 11.ed4 ed4 (11...Nd4 12.h3–/+ (12.Nd4 Bd4 13.Nc3) 12...a6 13.Ba4) 12.d3+= (12.Re1 a6 13.Ba4) 12...Bg4 (12...a6 13.Bc6) 13.Nbd2 a6 (13...Ne5 14.Ra2+=) 14.Ba4 (14.Bc6 Nc6 15.Ne4 Ba7=) 14...Rb8 (14...Ne5 15.Ra2+=) 15.Qc2 Bf3 16.Nf3 (16.gf3 Not 16...Ng6–/+) 16...Qd6 17.Nd2 f5 ½–½. Peto,L – Kiss,Attila (2425), HUN–chT4 Hungary, 1997.

5.Nf3 Ne7 6.Bc4 d5 A) 7.Bb3 A1) 7...cb5 8.Qe2 (8.0-0 Nbc6 9.d4 ed4 10.ed4 Bb6 11.Nc3 b4 12.Na4 0-0 13.Re1; 8.Nc3 Nbc6 9.Nb5 0-0 10.0-0 a6 11.Nc3 Bf5 12.e4 Be6 13.Qe2) 8...a6 9.Nc3 Nbc6 10.0-0 0-0 11.a4 ba4 12.Ra4 Be6 13.d4; A2) 7...a6 8.a4 (8.0-0 0-0 9.ba6 Na6 10.Nc3 Bd6 11.d4 ed4 12.ed4 Bf5 13.Re1; 8.ba6 Na6 9.Nc3 0-0 10.0-0 Bd6 11.d4 ed4 12.Nd4 Nc5 13.e4; 8.bc6 Nbc6 9.Nc3 0-0 10.0-0 Bf5 11.e4 Be6 12.Qe2 Qd6 13.ed5; 8.Nc3 ab5 9.0-0 Bd6 10.d4 e4 11.Nd2 Nf5 12.Ne2 Qc7 13.g3; 8.d4 ed4 9.ed4 Bb6 10.bc6 Nbc6 11.0-0 0-0 12.c4 dc4 13.Bc4) 8...ab5 9.ab5 Ra1 10.Ba1 0-0 11.0-0 e4 12.Nd4 Nf5 13.d3; B) 7.Be2 B1) 7...0-0 8.a4 (8.Nc3 cb5 9.0-0 e4 10.Ne1 b4 11.Nb5 a6 12.Nd4 Nbc6 13.c3; 8.0-0 cb5 9.d4 ed4 10.ed4 Bb6 11.Bb5 Nbc6 12.Re1 a6 13.Be2; 8.d4 Bb4 9.c3 Bd6 10.c4 ed4 11.Nd4 c5 12.Nf3 Be6 13.Nc3) 8...Nf5 9.0-0 Nd7 10.g4 e4 11.gf5 ef3 12.Bf3 Nb6 13.d4; B2) 7...cb5 8.d4 (8.0-0 0-0 9.d4 ed4 10.ed4 Bd6 11.Bb5 Nbc6 12.Nc3 a6 13.Bd3) 8...Bb4 9.c3 Bd6 10.de5 fe5 11.Bb5 Nbc6 12.c4 0-0 13.Nc3; B3) 7...e4 8.Nd4 0-0 9.0-0 cb5 10.Nb3 Bd6 11.Bb5 a6 12.Be2 Nbc6 13.Nc3; B4) 7...a6 8.d4 (8.a4 ab5 9.ab5 Ra1 10.Ba1 0-0 11.0-0 e4 12.Nd4 Bd6 13.bc6; 8.ba6 Na6 9.Nc3 0-0 10.0-0 Bd6 11.h3 Bf5 12.d3 Nc5 13.d4; 8.0-0 ab5 9.d4 ed4 10.Nd4 0-0 11.Nd2 Na6 12.a4 b4 13.N2b3) 8...ed4 9.ed4 Bd6 10.a4 ab5 11.ab5 Ra1 12.Ba1 0-0 13.0-0.

5.Nf3 Ne7 6.d4 Bb6 7.de5 Ng6 (7...fe5 8.Be5 Nf5 9.g4+/–) 8.ef6 gf6 9.Nbd2 d6 (9...Qe7 10.Be2+–) 10.c4 (10.Ne4 Ba5 11.Ke2 0-0 12.Qd6 Qd6 13.Nd6 cb5 14.Nc8 Rc8+–) 10...Bg4 (10...Qe7 11.Be2+–) 11.Be2 (11.Ne4 Ba5 12.Ke2 0-0 13.Qd6 cb5 14.cb5 Qd7 15.Qd7 Nd7+– (15...Bd7?? 16.Nf6 Rf6 17.Bf6+–)) 11...a6 (11...Qe7 12.h3 Bf5 13.Nd4 Bd4 14.Bd4+– (14.ed4?! Nf4 15.Kf1 Rg8+=)) 12.a4 (12.Ne4 Ba5 13.Kf1 0-0 14.Qd6 Qd6 15.Nd6 Bb4 16.bc6 Bd6+/–) 12...ab5 13.ab5 c5?? (better is 13...Ra1 14.Qa1 0-0+–) 14.Ra8 0-0 (14...Ne5 15.Ne4 Ba5 16.Kf1 Bf3 17.Bf3+–) 15.0-0 (15.Ne4 Ba5 16.Kf1 Bc7+–) 15...Qc7 (15...Qe7 16.Qc2+–) 16.h3 (16.Ne4 Bf3 17.Qd5 Kh8 18.Bf3 Ne5+–) 16...Be6 17.Ne4 d5 (17...Ne5 18.Qd6 Nf3 19.Bf3 Qd6 20.Nd6+–) 18.Nf6 Kf7 19.Ng5 Ke7 20.Nfh7 (20.Ne6 Ke6 21.Bg4 Ke7 22.Nd5 Kd6 23.Nb6 Ke7 24.Nd5 Kd6 25.Nc7 Ke7 26.Rb8 Ne5 27.Be5 Rb8 28.Qd7 Kf8 29.Qg7) 20...Kd7 21.Nf8 Nf8 22.Ne6 (22.Ne6 Ne6 23.Qd5 Qd6 24.Qb7 Bc7 25.Rd1+–) 1–0. gtate (1980) – speqter, net–chess.com, 2004.

(--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6).

5.c4 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.c4 c6).

4.a4 Ne7 5.e3 0-0 6.d4 ed4 7.Bd4 a6 8.c4 ab5 9.ab5 Ra1 10.Ba1 c6?? 11.Nf3 Qa5 12.Bc3 Qa2 13.Be2 cb5 14.cb5 b6? 15.0-0?? Bb7?? 16.Qd6+– Qe6 17.Qe6 de6 18.Nd4 e5 19.Nf3 Nf5 20.Rd1 Rc8 21.Ba1 h6 22.Nfd2 Nd7 23.Bg4 g6 24.e4 h5 25.ef5 hg4 26.fg6 Kg7 27.f3 gf3 28.Nf3 Nc5 29.Rd6 Bf3? 30.gf3 Nb3 31.Bb2 Rb8 32.Nc3 Nd4 33.Nd5 Nb5 34.Rb6 Rb6 35.Nb6 Kg6 36.Kg2 Nd6 37.Nd5 Nf5 38.h3 Kg5 39.Bc1 Kg6 40.f4 ef4 41.Bf4 Kf7 42.Bc1 Ke6 43.Nf4 Ke5 44.Kf3 Nd4 45.Kg3 f5 46.Bb2 Ke4 0–1. j1a9n55 – kargi25, internet, 2011.

4.e3 Qe7 5.Qh5 g6 6.Qd1 a6 7.a4 c6 8.c4 cb5 9.ab5 f5 10.Nc3 Bb4?? (better is 10...Nf6+=) 11.Nd5+– Qd6 12.Nf3 e4 13.Bh8 ef3 14.Qf3 (14.b6 Kd8 15.Nc7 Qb6 16.Na8 Qa7+–) 14...Bc5 (14...Ne7 15.Nb4 Qb4 16.Bc3+–) 15.Qh3 (15.d4 Bb4 16.Kd1+– (16.Nb4?! Qb4 17.Kd1 Qb3 18.Kc1 Qc3 19.Kb1 Qb3 20.Kc1 Qc3 21.Kb1 Qb3 22.Kc1=)) 15...Qe7 (15...h5 16.d4 Bb6+–) 16.Ne7 Ne7 17.Qh7 d6 18.Bf6 d5 19.cd5 Nd5 20.Qg6 Kd7 21.Qf7 (better is 21.Qf5 Kc7 22.Qe5 Bd6 23.Qd5 Nc6+–) 21...Kd6 22.Bc4 (better is 22.Qf8 Ke6 23.Qc8 Nd7 24.Qa8 N5f6 25.ba6 ba6 26.Ra6 Ke7 27.Qc6+–) 22...Be6 23.Qf8 Kc7 (23...Kd7 24.Qd8) 24.Qd8 1–0. GuestKRVB – GuestHSCN, freechess.org, 2017.

4.e3 Ne7 5.Bc4 c6 6.a4 (6.Qh5 g6 7.Qf3 Rf8+=) 6...cb5 (6...Bc7 7.Be2=) 7.ab5 a6 (7...Bc7 8.Qh5 g6 9.Qf3=) 8.Bb3 (8.Qh5 g6 9.Qf3 Rf8+-) 8...Bc7 9.c4 (9.Qh5 g6 10.Qf3 f5+-) 9...d5= 10.c5 (better 10.cd5 Nd5 11.d4=) 10...0-0 (better 10...b6 11.cb6 Bb6 12.Qh5 g6=) 11.b6+- Nd7 (11...Bb6 12.cb6 Qb6+-) 12.e4 (better 12.bc7!? Qc7 13.d4 ed4 14.ed4+-) 12...Bb8 (better 12...Nc5 13.bc7 Qc7+=) 13.Bd5?? (better 13.ed5 Kh8 14.Qc2+-) 13...Nd5-+ 14.ed5 Nc5 15.Qc2 (better 15.d4 ed4 16.Bd4 Re8 17.Be3-+) 15...Qd5 16.Nf3 (16.Kf1 Nb3 17.Ra4-+) 16...Qe4 (16...Nd3!? 17.Kf1 Qb5 18.Ra5 Qa5 19.Qd3 Qb6 20.Qc2-+) 17.Kd1? (better 17.Qe4 Ne4 18.Ba3-+) 17...Qc2 18.Kc2 Bf5 19.Kd1 Nd3 20.Ba3 Rc8 (20...Nf2 21.Ke2 Nh1 22.Bf8 Kf8 23.Nc3-+) 21.Ke2 (21.Rf1 e4 22.Ne1 Bh2 23.Nd3 ed3-+) 21...Nf4 22.Ke3 (22.Kd1 Bc2 23.Ke1 Ng2 24.Ke2 Nf4 25.Ke3 Nd5 26.Ke2 Bg6-+) 22...Ng2 23.Ke2 e4 (23...Bg4 24.Nc3 Rd8 25.Be7 Nf4 26.Ke1 Bf3 27.Bd8 Nd3 28.Kf1 Bh1 29.Nb5-+) 24.Nd4 Bg4 25.f3 (25.Kf1 Be5 26.h3 Bh5-+) 25...ef3 26.Nf3 (26.Kf2 Be5 27.Nf3 Bf3 28.Kf3 Nh4 29.Kg4 Rc4 30.d4 Rd4 31.Kh3 g5-+) 26...Re8 (better 26...Nh4! 27.Kf2 Bf3-+) 27.Kf2 Nf4 28.Kg3 (28.Nc3-+) 28...h5 (better 28...Nd3 29.Ne5 Bd7-+) 29.Nc3 Ne2 (better 29...Rd8 30.Kf2 Nh3 31.Kg2-+) 30.Kf2 Nf4 (better 30...Nc3 31.dc3 Re4-+) 31.Kg3 Ne2 (better 31...Rd8 32.Kf2 Nh3 33.Kg2-+) 32.Kf2 Nc3 33.dc3 Bf4 (33...Bf3 34.Kf3 Be5 35.Bb4-+) 34.Bc5 Rac8 35.Bd4 Rc4 36.Rhe1 (36.Ra5 Bf3 37.Kf3 Bd2 38.Rh5 Bc3-+) 36...Re1 37.Re1 Ra4 38.Re7 (38.Kg2 Ra2 39.Bf2 g5-+) 38...Ra2 39.Re2 Re2 40.Ke2 Bh2 41.Kf2 Bd6 (better 41...Bf3 42.Kf3 f5-+) 42.Nh2 (42.c4 Kf7-+) 42...a5 (better 42...Bh2 43.Ke3 h4-+) 43.Ng4 hg4 44.c4 g3 45.Kg2 f5 46.c5 Bf4 (46...Bb8 47.Be3-+) 47.Bc3 (47.Kf3 Bb8 48.Be3 Kf7-+) 47...g5 (better 47...a4!? 48.Bb4-+) 48.Ba5 g4 (48...Be5 49.Be1 f4 50.Kf3-+) 49.Bc3 (49.Be1 Be5 50.Bg3 f4-+) 49...Be3 (better 49...Bb8 50.Bd4-+) 50.Be5 (50.Bb4 f4 51.c6 Bb6 52.cb7-+) 50...f4 (better 50...Bc5 51.Bg3 Bb6-+) 51.c6+= f3 (51...bc6 52.b7 Ba7 53.Bf4=) 52.Kg3+- f2?? (better 52...bc6 53.b7 Ba7+=) 53.Kg2 (better 53.c7 f1Q 54.c8Q Kf7 55.Qd7 Kf8 56.Bd6 Kg8 57.Qg4 Kf7 58.Qd7 Kg6 59.Qe8 Qf7 60.Qe3+-) 53...bc6= 54.b7 g3?? (better 54...Ba7=) 55.b8Q+- Kf7 56.Qc7 (56.Qb3 Ke7 57.Qe3 Kd7+-) 56...Ke6 (56...Kg6 57.Qc6 Kf5 58.Bg3 f1Q 59.Kf1+-) 57.Qd6 (better 57.Bg3 Kd5 58.Qe5 Kc4 59.Qe3 f1B 60.Kf1 c5+-) 57...Kf5 58.Qc6 (better 58.Bg3 Ke4 59.Qc6 Kd4 60.Bc7+-) 58...Kg4 (58...Ke5 59.Qc7 Ke4 60.Qg3 Bd4+-) 59.Qg6 Kh4 (59...Bg5 60.Qe6 Kh5 61.Qf7 Kh6 62.Bg7 Kh7 63.Bf8 Kh8 64.Qg7) 60.Qg3 (60.Qg3 Kh5 61.Qe3 f1R 62.Kf1 Kg6 63.Qf4 Kh5 64.Qf5 Kh6 65.Bd6 Kg7 66.Bf8 Kg8 67.Qf6 Kh7 68.Qg7; 60.Bg3) 1-0. aravind555 – cristianoespc, lichess.org, 2018.

4.e4= Bc5 5.Bc4=.

4.e4= Ne7 5.Qh5+= g6 6.Qh4 0-0 (6...Bc5 7.Qf6 Rf8 8.Qe5 Bf2 9.Ke2=) 7.Bc4 Kh8 (7...Kg7 8.Nf3+=) 8.f4 ef4?? (better is 8...c6+=) 9.Bf6 Rf6 10.Qf6 1–0. pierred (2595) – eduardobandeira (2100), net–chess.com, 2008.

4.Nf3 Qb4=+ 5.Ba3 Qb5 6.Bf8 Kf8 7.e3 Qc6 8.Nc3 Ne7 9.Bc4?? (9.Rb1 d5=+) 9...d5 (better 9...Qc4 10.Rb1 d5-+) 10.Bb3 Kf7 (better 10...b5!?-/+) 11.e4= Rd8 (11...a6 12.0-0+=) 12.ed5+- Nd5 13.Nd5 Rd5 14.Bd5 (14.Ne5 fe5 15.Qf3 Ke6 16.Bd5 Qd5 17.Qg4 Kd6 18.Qc8 Qg2 19.Qf8 Kc6+-) 14...Qd5 15.0-0 Bg4? (15...Nc6+=) 16.h3?? (better 16.Ne5 fe5 17.Qg4+-) 16...Bf3=+ 17.Qf3 Qf3 18.gf3 Nc6 19.Rab1 (19.f4 ef4 20.c3 Ne5=) 19...b6 20.Rfe1 Nd4 21.c3?? (better 21.Kg2=+) 21...Nf3-+ 22.Kf1 (22.Kg2 Ne1 23.Re1 Rd8-+) 22...Nd2 23.Kg2 Nb1 24.Rb1 Rd8 25.Kf3 (25.Rb4 c5 26.Ra4 Rd7-+) 25...Rd3 26.Ke4 (26.Kg2 Rc3 27.a4 Ke6-+) 26…Rc3 (26...Rc3 27.f4 ef4-+) 0-1. aravind555 (1675) - elkenergy (1655), lichess.org, 2018.

4.a3 d5 5.d4 ed4 6.Bd4=.

4.a3 g6 5.e3 (5.e4 a6+=) 5...Bg7 (5...a6 6.ba6 Na6 7.d4=) 6.c4 (6.Nc3 Qf7+=) 6...d6 7.Nf3 (7.Nc3 Nd7=) 7...Be6 (7...e4 8.Nd4=) 8.Nc3 Nd7 9.Be2 (9.d4 0-0-0=) 9...Nb6 (9...Qf7 10.d3=) 10.d3 Nh6 (10...f5 11.a4=) 11.a4+= a5 12.ba6 Ra6 13.a5 Nd7 14.Nd5 (14.d4 0-0+=) 14...Bd5 (14...Qd8!?=) 15.cd5+/– 0-0 16.Qc2 Qd8 (16...Rc8 17.0-0+/–) 17.0-0 Ra8 (17...f5 18.d4 Ra8 19.de5 de5 20.Rfc1+/–) 18.Nd2 (18.Rfc1 Nc5+/–) 18...Nc5 (18...f5 19.Rfc1+=) 19.Ne4 (19.d4 Na6+/–) 19...Na6+= 20.Qb3 (20.f4 Qe7 21.fe5 f5+=) 20...Qb8 (20...f5 21.Nd2 Nc5 22.Qb4+=) 21.d4 Nf7 (21...f5 22.Ng5 ed4 23.Bd4 Bd4 24.ed4+/–) 22.Nd2 (22.de5 fe5 23.f4 Qc8+/–) 22...f5 23.Nc4 (23.de5 de5 24.Rab1 Rd8+/–) 23...e4 (23...ed4 24.Bd4 Bd4 25.ed4=) 24.f3 (24.Rab1 Ra7+=) 24...Ng5 (24...ef3 25.Rf3 Ng5 26.Rf4+=) 25.f4+/– Nf7 26.Nd2 (26.Rab1 Ra7+=) 26...Nh6 (26...Qa7 27.Rfc1+=) 27.Rfc1 (27.Rab1 Qa7+=) 27...Rc8 (27...Nf7 28.Rab1+=) 28.Rcb1 (28.Rab1 Qa7+=) 28...Ra7 (28...Qa7 29.Bb5+=) 29.Ba3 (29.Bc1 Qa8+=) 29...Bf8 (29...Qa8 30.Nc4+=) 30.Nc4 (30.Ba6 Ra6 31.Bc1 b6+=) 30...Nf7 31.Nd2 Be7 0–1. GuestZSWT – GuestMTWT, freechess.org, 2016.

4.a3 Nh6 5.e3 (5.Nc3 a6=) 5...d5= 6.c4 Be6 (6...d4 7.ed4 ed4 8.Qe2=) 7.Qc2 (7.cd5 Bd5 8.d4 ed4 9.Qd4 Be6=) 7...Ng4 (7...dc4 8.Bc4 Qc5 9.d3=) 8.h3 Nh6 9.Nf3 (9.cd5 Bd5 10.Nc3 Be6+=) 9...e4 (9...dc4!? 10.Bc4 Qc5=) 10.Nd4+= f5 (10...c6!?+=) 11.Ne6+/– Qe6 12.cd5 Qd5 13.Bc4 (13.Qc7!? Nd7+–) 13...Qd7+/– 14.0-0 (14.g4 Nf7+/–) 14...Bd6 (14...a6 15.a4+=) 15.f3 (15.Qc3 Bf8 16.d3+/–) 15...Rf8 (15...a6!? 16.fe4 ab5+/–) 16.fe4+– fe4?? (better is 16...c6+–) 17.Qe4 Kd8 (17...Be5 18.Rf8 Kf8 19.Be5 Qf5 20.Qb7 Qe5+–) 18.Nc3 (better is 18.Rf8 Bf8 19.Qb7+–) 18...c6 19.Rf8 Bf8 20.Rf1 (20.Qh7 cb5 21.Rf1 Qe8 22.Nb5 Nd7 23.Bg7 Qe7+–) 20...Bd6 (20...Qe7 21.Qh7 Nd7 22.bc6 bc6 23.Ne2+–) 21.Qh7 Be7 (21...Qe7 22.bc6 bc6 23.Nd5 cd5 24.Bd5+–) 22.Ne4 (better is 22.bc6 bc6 23.Ne4 Qe8+–) 22...Kc7 (22...cb5 23.Ba2 b4 24.Bg7 ba3 25.Qh6 Qc6 26.Qh8 Qe8+–) 23.Be5 Kb6 24.Bd4 (24.bc6!? Nc6 25.Rb1 Bb4+–) 24...Kc7 25.Qg7 Nf5 (25...cb5 26.Be5 Kb6+–) 26.Rf5! Qf5 27.Qe7 Nd7 28.d3 Rf8 29.b6! ab6 30.Qd6 Kc8 31.Be6 Qf1 32.Kh2 Rd8 (32...Qg1 33.Kg1 Rf7 34.Bb6 Rf1 35.Kf1 c5 36.Bd7) 33.Be5 1–0. GuestPRVN – GuestVBWQ, freechess.org, 2017.

4.Ba3 Qf7 5.Bb2 (5.Bf8 Qf8 6.e4 Qf7=) 5...Qc4 (5...d5 6.e3+=) 6.e3= Qb4 (6...Qf7 7.d4 ed4 8.Bd4=) 7.Ba3+= Qa5 8.Bf8 Kf8 9.c4 Qa3 1–0. GuestKVZK – GuestKLKW, freechess.org, 2017.

4.d4 Qb4 5.Nc3?? (better 5.Bc3 Qb5 6.e3=) 5...ed4 (better 5...Qb2 6.Nd5 Bb4 7.Nb4 Qc3 8.Qd2 Qa1 9.Qd1 Qd4 10.Qd4 ed4 11.Nf3-+) 6.Qd3 (6.Rb1 dc3 7.Ba1 Qa3-+) 6...dc3 (better 6...Qb2 7.Rb1 Qc3 8.Qc3 dc3-+) 7.Bc3 Qe7 8.e3 d6 9.Be2 Nh6 10.Bh5 (10.Nf3 Nd7-+) 10...g6 (10...Nf7 11.Ne2-+) 11.Bg6 (11.Be2 Nd7-+) 11...hg6 12.Qg6 Qf7 (12...Nf7 13.Qf6 Qd7 14.Qf3-+) 13.Qf5 (13.Qf6 Qf6 14.Bf6-+) 13…Bf5 (13...Bf5 14.Ne2 Bc2-+) 0-1. aravind555 - Dori40 (1605), lichess.org, 2018.

4.e3 Qb4 5.Ba3 Qa4 6.Bf8 Kf8 7.Nc3 Qb4 8.Be2 c6 (8...d6 9.Nf3+=) 9.a3 Qd6 10.a4 Ne7 11.Nf3 Nd5 (11...Qc7 12.0-0+=) 12.Ne4+- Qe6 13.Bc4 (13.c4 Ne7+-) 13...f5 14.Nc3 (14.Nc5 Qe7 15.Nb3 Nc7+=) 14...d6 Black prepares e4 (better 14...Nc3!? 15.Be6 Nd1 16.Bf5 Nb2=+) 15.Nd5 cd5 16.Bb3 e4 (16...Nd7!?+-) 17.Nd4+- Qf7 18.0-0 Nd7 19.d3 Nc5 20.Ba2 (20.Ba2 Na4 21.Bd5 Qd5 22.Ra4+-; 20.de4 Nb3 21.Nb3 de4 22.Qd6 Qe7+-) 1-0. aravind555 (1625) - Jaimefistro (1605), lichess.org, 2020.

4.Nc3 d5 5.e4 d4 6.Nd5 Bd6 7.c3 c6 8.bc6 bc6=.

4.c4 a6 5.e4 ab5 6.cb5 d5 7.ed5 Qd5 8.Nc3 Qd6=.

4.c4 Bb4 A) 5.a3 Ba5 6.e4 d6 7.Nc3 Nd7 8.Qh5 g6=; B) 5.Qb3 Ba5 (5...Bc5 6.e3 d6 7.d4 Bb6 8.Bd3 ed4+=; 5...Qe7 6.Nf3 Nh6 7.e4 Bc5 8.Nc3 Ng4=; 5...Bd6 6.Qg3 Bf8 7.e4 d6 8.d4 Nd7+=; 5...Bf8 6.Nf3 d6 7.e4 f5 8.Nc3 g5=) 6.Qa3 c6 7.Qg3 Qe7 8.e4 cb5+=; C) 5.Nc3 d6 (5...Ne7 6.a3 Ba5 7.e3 0-0 8.Qa4 b6=; 5...a6 6.Nd5 Ba5 7.e4 ab5 8.cb5 c6=; 5...Nh6 6.Nf3 d6 7.e3 a6 8.a3 Bc3=; 5...Ba5 6.e4 d6 7.Nf3 Ne7 8.d4 Bg4=) 6.a3 Ba5 7.e4 Ne7 8.Qh5 Ng6+=; D) 5.Bc3 a5 (5...Qe7 6.e3 Nh6 7.Bb4 Qb4 8.Nc3 0-0=; 5...Bc3 6.Nc3 Ne7 7.e3 a6 8.d4 ab5=; 5...Bc5 6.e3 Qe7 7.Be2 e4 8.d4 ed3+=) 6.e3 Ne7 7.Bb4 ab4 8.Qb3 c5=; E) 5.e3 Ne7 (5...d6 6.Qa4 c5 7.a3 Ba5 8.Nc3 Nh6=; 5...Nh6 6.a3 Ba5 7.Bd3 d5 8.Qa4 dc4=; 5...a6 6.Qa4 c5 7.Bd3 Ne7 8.Nf3 0-0=) 6.a3 Ba5 7.Qh5 g6 8.Qf3 0-0=.

4.c4 Bc5 5.e3 d6 (5...Ne7 6.d4 Bb4 7.Bc3 Bc3 8.Nc3 ed4=; 5...Nh6 6.d4 Bb4 7.Bc3 Bc3 8.Nc3 d6=; 5...Bb4 6.a3 Ba5 7.Bd3 g6 8.Qa4 c6+=; 5...a6 6.d4 Bb4 7.Bc3 Bc3 8.Nc3 ed4=) 6.d4 ed4 7.ed4 Bb4 8.Nc3 Qe7=.

4.c4 c6 5.a4 (5.e3 d5 (5...cb5 6.cb5 d5 7.d4 e4 8.Nc3 Be6=; 5...d6 6.d4 Bf5 7.Nf3 a6 8.bc6 bc6=; 5...a6 6.d4 Bb4 7.Bc3 Qa5 8.Qd2 Bc3=; 5...Qc7 6.d4 d6 7.Nc3 f5 8.bc6 bc6=) 6.cd5 cd5 7.d4 e4 8.Nc3 Be6=; 5.d4 Bb4 (5...d5 6.e3 ed4 7.Bd4 dc4 8.Bc4 c5=; 5...Qa5 6.Bc3 Bb4 7.Qd2 Bc3 8.Nc3 ed4=; 5...cb5 6.cb5 Qa5 7.Bc3 Qb5 8.e3 Qd5=; 5...ed4 6.Qd4 d6 7.e4 a6 8.Be2 Be6=) 6.Bc3 Qa5 7.Qd2 Bc3 8.Nc3 ed4=; 5.e4 cb5 (5...d5 6.cd5 cd5 7.ed5 Qd5 8.Nc3 Qd6=) 6.cb5 d5 7.ed5 Qd5 8.Nc3 Qd6=; 5.Nc3 cb5 (5...d5 6.cd5 cd5 7.e3 Be6 8.d4 Nh6=) 6.Nb5 Nc6 7.e4 Bc5 8.Rb1 d6=; 5.Qa4 d5 6.cd5 cd5 7.d4 Bd6 8.Nd2 Nd7=) 5...a5 (5...d5 6.cd5 cd5 7.d4= e4 8.Nc3 f5=; 5...a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 cb5=; 5...cb5 6.ab5 d5 7.cd5 Qd5 8.Nc3 Qd8=; 5...Bb4 6.Qb3 Ba5 7.Qg3 Qe7 8.e4 d6=; 5...Nh6 6.e3 d5 7.d4 ed4 8.Bd4 Nf5=) 6.e3 (6.d4 Bb4 7.Bc3 ed4 8.Qd4 d6=) 6...cb5 (6...d5 7.cd5 cd5 8.d4 e4=) 7.cb5 (7.ab5 d5 8.d4 Be6=) 7...d5 8.Qc2 (8.d4 e4=) 8...Be6 9.Nf3 Nd7 10.Na3 Rc8 11.Qd1 Bg4 12.Be2 Be6 (12...Nh6 13.0-0+=) 13.d4 (13.Bf1 Bd6+=) 13...Bb4+= 14.Nd2 ed4 (14...Ne7!?+=) 15.Bd4= Nh6 16.0-0 0-0 17.Nc2 Bc5 18.Nb3 Be7 19.Rc1 Nf5 20.Bb2 Nc5 21.Nc5 Bc5 22.Bg4 Rc7 23.Qd3 Qd7 24.Rfd1 Nh6? (better is 24...Rfc8!?+=) 25.Be6+/– Qe6 26.Qd5 Qf7 27.Qf7 Rff7 (27...Kf7 28.Nd4 Rfc8 29.Nb3+–) 28.Rd5 b6 (28...Rfd7 29.Rd7 Rd7 30.Nd4+–) 29.Ne1 (29.Na1 Rfd7 30.Rd7 Rd7 31.Nb3+–) 29...f5? (better is 29...Rfd7 30.Rcd1 Rd5 31.Rd5 Kf7+/–) 30.Nd3 Bf8 31.Rc6 g6 (31...Rc6 32.bc6 Rc7 33.Ne5+–) 32.Bd4 Rc6 33.bc6 f4 (33...Rc7 34.Ne5 Be7+–) 34.Bb6 (34.Nf4?! Rc7+–; worse is 34.ef4 Nf5+–) 34...fe3 35.Ra5 (better is 35.c7 ef2 36.Nf2 Rc7 37.Bc7 Nf5+–) 35...e2 (35...ef2 36.Nf2 Re7 37.Nd3+–) 36.Re5 Rf6 (36...Bd6 37.Re2 Rf8+–) 37.Re2 (better is 37.c7 Nf7 38.Re8+–) 37...Rc6 38.a5 Nf5 39.g3 Nd6 40.Kg2 (40.Ne5 Rc1 41.Kg2 Ra1+–) 40...Rc3? (better is 40...Nc4+–) 41.Ne5 Nf5 42.Ra2 Bd6 43.Nd7 (43.f4 Bb4+–) 43...h5 (43...Kf7 44.a6 Ke6 45.a7+–) 44.Nf6 (44.a6 Rc8+–) 44...Kf7 45.Ne4 Rc4 46.Nd6 Nd6 47.a6 Rc8 48.a7 Ra8 49.Ra4 (49.Ra6 h4+–) 49...Nc8 (49...Ke6 50.f4+–) 50.Bd4 (50.Be3 Ke6+–) 50...Nd6 (50...Ke6+–) 51.Rb4 1–0. Suess,Stefan – Koch, 1984.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qd8 7.Nf3 a6 8.d4 ed4=.

4.c4 d6 5.e3 Nh6 6.d4 a6 7.Bd3 ab5 8.cb5 Be6=.

4.c4 Bd6 5.e3 a6 6.Bd3 g6 7.Qa4 c6 8.Be4 Bc7=.

4.d4 ed4 5.Qd4 a6 6.Qg4 g6 7.e4 ab5 8.Bb5 c6=.

4.e4 c6 5.bc6 dc6 6.Bc4 Bc5 7.Qh5 g6 8.Qh4 h5=.

5.Nc3 0-0 6.Nf3 Bc5 7.e3 a6 8.d4 ed4=.

5.e3 Nf7 6.Qc1 (6.d4 a6=) 6...0-0 7.d4 ed4 (7...a6 8.c5=+) 8.ed4 (8.Bd4 c5 9.Bb2 a6=) 8...d5 9.Be2 dc4 10.Qc4 c6 (10...Re8 11.Nc3=+) 11.a4 (11.Nf3 Bd7=) 11...cb5 (11...Re8 12.Nc3=+) 12.ab5 Qd6 (12...Re8 13.Nf3=+) 13.Ba3= Qe6?? (better 13...Qd8=) 14.Qe6+- Be6 15.Be7 Re8 16.Bb4 Bc4 (16...a6 17.Nc3+-) 17.Nc3 (17.Kd2 Be2 18.Ne2 Ng5+-) 17...Ng5 (17...a6 18.Kd2 Rd8 19.Nf3 (19.Bc4?! Rd4 20.Bd3 Ne5+-) 19...Be2 20.Ke2+-) 18.Kd1 (better 18.h4 Nf7 19.Kd2+-) 18...Bd5 (18...Be2 19.Nge2 a6 20.Nd5+-) 19.Bf3 (better 19.Nd5 Re4 20.Bc3+-) 19...Nf3 20.Nf3 Bf3 21.gf3 Nd7 (21...Rd8 22.d5+-) 22.Ne2 (better 22.Nd5!? Red8 23.Nc7 Rab8 24.Ra7 Nb6+-) 22...Nb6 (22...a6 23.Re1+-) 23.Bc5 Nd5 24.Ra7 Ra7 (24...b6 25.Ra8 Ra8 26.Kd2 bc5 27.dc5 Ra2 28.Kd3 Nb4 29.Kc3 Re2 30.Kb4+-) 25.Ba7 Ra8 (25...b6 26.Kd2 Ra8+-) 26.Bc5 (better 26.b6+-) 26...Ra1 27.Nc1 Nf4?? (better 27...b6+-) 28.Kc2 Kf7 29.Kb2 (29.Re1 Ne6 30.Kc3 Nc5 31.dc5 Ra4+-) 29...Ra5 30.Re1 (30.b6!? Nd5 31.Kc2 Ra6+-) 30...Rb5 31.Kc3 b6 32.Kc4 (32.Re7 Kg6 33.Rb7 Kf5+-) 32...Rb2 (32...Rb1 33.Bb4+-) 33.Bd6 Ne6 (33...Ng6 34.Nd3 Rc2 35.Kd5+-) 34.Nd3 (34.d5 Nc5+-) 34...Rc2 35.Kd5 Ng5 (35...Nc7 36.Bc7 Rc7 37.Kd6+-) 36.Re7 Kg6 37.Nf4 Kf5 (37...Kh6 38.Rb7 Nf3 39.Bf8+-) 38.Rg7 Nf3 (38...Rf2 39.h4 Rf3 40.hg5 fg5 41.Ne6+-) 39.Rh7 (39.Nh5 Ng5 40.f3 Rg2+-) 39...Rd2 (39...Ng5 40.Rh5 Kg4 41.h3 Kf3 42.Ne6+-) 40.Rh5 Kg4 (40...Ng5 41.f3 Rf2+-) 41.h3 1-0. ClayPigeons (2145) - Efremov_Vlad (2180), Rated Bullet game, lichess.org, 2021.

4.a4 d6 5.e3 (5.e4 d5=) 5...Ng6 (5...d5 6.d4 Nd7 7.c4=) 6.c4 (6.Nf3 Be7=) 6...Be7 7.Nf3 0-0 (7...Nd7 8.Qc2=) 8.Be2 (8.d4 ed4 9.Qd4 Ne5=) 8...Kh8 (8...f5 9.0-0=) 9.0-0 Nd7 10.Nc3 Re8 11.h3 (11.d4 f5+=) 11...Ndf8 12.Qc2 Be6 13.d4 Bf7 14.de5 (14.a5 a6+=) 14...fe5 15.Rfd1 Ne6 16.Nd5 (16.Ne4 Qb8+=) 16...Rf8 17.Ne7 (17.a5 Nh4+=) 17...Qe7= (17...Ne7? 18.Ne5 Qe8 19.Nf7 Qf7 20.Bf3+-) 18.Rd2 (18.a5 Nh4=) 18...Bg8 (better 18...Nh4=) 19.c5 (19.Rad1 Nc5=) 19...Rad8 (better 19...Nc5 20.Ra3 Be6-/+) 20.cd6+= cd6 21.Rc1 (21.Ba3 Nc5 22.Bc5 dc5+=) 21...Nc5= 22.Ne5?? (better 22.Bc4=) 22...Ne5-+ 23.Be5 Qe5 24.Bf3 (24.Bc4 Bc4 25.Qc4 a5-+) 24...b6 (24...Rf3 25.gf3 Nb3 26.Rcd1 Nd2 27.Rd2-+) 25.a5? (25.Rb1 Be6 26.Qd1 Qg5-+) 25...Rf6 (better 25...Nb3 26.ab6 ab6 27.Bc6-+) 26.ab6 ab6 27.Qa2?? (27.Rb1-+) 27…Ba2 (27...Ba2 28.Ra2 Nd3-+) 0-1. RichardSommer (1990) - hmazuur (2030), lichess.org, 2020.

4.Nc3 d5 A) 5.e4 d4 6.Na4 a6 7.Qh5 Ng6 8.Nf3 Be6+=; B) 5.Nf3 d4 6.Na4 a6 7.ba6 Qd6 8.e3 Qc6+=; C) 5.e3 Be6 6.Nf3 Nf5 7.e4 de4 8.Ne4 a6+=; D) 5.d4 e4 6.e3 Ng6 7.Qh5 Be6 8.f3 f5=.

4.c4 a6 A) 5.d4 Ng6 (5...ab5 6.cb5 ed4 7.Qd4 d5 8.Nf3 Nf5=; 5...ed4 6.Qd4 ab5 7.cb5 d5 8.Nf3 Nf5=; 5...e4 6.Qa4 d5 7.Nc3 e3 8.fe3 dc4=; 5...d6 6.e4 Nd7 7.Nf3 ed4 8.Bd4 Ne5=) 6.e4 ed4 7.Bd4 Bb4 8.Nd2 ab5+=; B) 5.ba6 Na6 (5...b6 6.e3 Na6 7.d4 ed4 8.ed4 Bb7+=; 5...Ra6 6.e3 d6 7.Nc3 Nbc6 8.d4 ed4=) 6.e3 d5 7.d4 ed4 8.ed4 Ng6+=; C) 5.e4 ab5 (5...Ng6 6.Nc3 Bc5 7.Nf3 d6 8.d4 ed4=) 6.cb5 d5 7.Qh5 Ng6 8.ed5 Qd5+=; D) 5.Qa4 b6 (5...d5 6.d4 Nd7 7.cd5 Nb6 8.Qb3 ed4+=; 5...Ng6 6.Nf3 b6 7.Qc2 ab5 8.cb5 d5=) 6.e4 Bb7 7.Qc2 ab5 8.cb5 d5+=; E) 5.e3 ab5 (5...d5 6.d4 ed4 7.Bd4 ab5 8.cb5 Nf5=; 5...d6 6.d4 ab5 7.cb5 Be6 8.Nc3 ed4=) 6.cb5 d5 7.d4 e4 8.Nc3 Be6+=.

4.c4 b6 5.e4= c6 6.d4 cb5 (6...ed4 7.Bd4 a6 8.Nc3+=) 7.cb5 d6 8.d5 Qc7 9.Nc3 Nd7 10.Rc1 f5 11.Bd3 Nc5 12.Nce2 (12.Nge2 Qd7+=) 12...Ng6 (12...Nd3 13.Qd3 fe4 14.Qe4= (14.Rc7? ed3 15.Nc3 Kd8–+)) 13.ef5+= Nf4? (better is 13...Nh4!? 14.g4 Be7+=) 14.Nf4+– ef4 15.Qh5 (15.Qe2!? Be7 16.f6 gf6 17.Nf3+–) 15...Qf7+/– 16.Qf7 Kf7 17.Bc2 Bb7 18.Rd1 Re8 19.Ne2 (19.Kf1 Be7+/–) 19...Rg8 (19...f3 20.gf3 Be7 21.Rg1+/–) 20.Rd2 (20.f3 Be7+–) 20...g6 (20...Be7!?+=) 21.fg6+/– hg6 22.0-0 (22.Kd1 Bh6 23.f3 a6+–) 22...g5? (22...Bd5 23.Nf4 (worse is 23.Rd5 Re2 24.Rc5 bc5 25.Bb3 Ke7+=) 23...Bc4 24.Rb1+/–) 23.Nc3 (better is 23.Bh7!?+–) 23...Bg7+= 24.a4 a5 25.Bd1 Bc3 (25...Re7!?=) 26.Bc3+/– Ne4? (26...f3 27.gf3 Nd7 28.Bc2+/–) 27.Rd3?? (better is 27.Bh5 Ke7 28.Re2+– (28.Be8?! Re8 29.Re2 Kf7+–)) 27...Nc3+= 28.Bh5 (better is 28.Rc3 Kf6 29.Bb3+=) 28...Rg6?? Exerts pressure on the isolated pawn (better is 28...Kf6 29.Rc3 Re5=) 29.Rc3+– Rc8?? (29...Kf6+–) 30.Rc8 Bc8 31.Bg6 Kg6 32.f3 (32.Rc1 Bb7 33.Rc6 Kf5 34.Rb6 Bd5 35.Rd6 Be4+–) 32...Bf5 33.Rc1 Kf6 34.Rc6 Ke5 35.Rb6 Kd5 36.Ra6 Kc5 37.Ra5 Kb4 (37...Bc2+–) 38.b6 Bc8 39.b7 (better is 39.Rg5!? Bb7+–) 39...Bb7 40.Rb5 Ka4 41.Rb7 Ka5 42.Rd7 Kb5 43.Rd6 Kc5 44.Rg6 Kd4 45.Rg5 Ke3 46.Re5 1–0. Baer,Cy (1895) – Elschner,Gerald (2205), RSS7E easy–50, 2007.

4.c4 c6 5.e3 cb5 6.cb5 d5 7.a4 (7.d4 Nd7=) 7...Nf5 8.Nf3 Be6 9.d4 e4 10.Nfd2 Bd6 11.Qb3 0-0 (better 11...Qd7!?=) 12.Nc3 (12.Ne4 Nd7+/-) 12...Qd7 (12...Re8 13.Nd5 Nh4 14.Bc4 Ng2 15.Kf1+/-) 13.Nd5 Rc8 14.Bc4 (better 14.Ne4 Kh8 15.Nec3+/-) 14...a6?? (better 14...Rc4 15.Qc4 Bf8 16.Nf6 gf6+=) 15.Ne4 (better 15.Nf6 Kh8 16.Be6 Qe7 17.Bc8 Qf6+-) 15...Ne3?? (15...Bb4 16.Qb4 Bd5+-) 16.Ne3 (better 16.Ndf6 Kh8 17.Be6 Nc2 18.Kd1 Na1+-) 16...Bg3 (16...Bc4 17.Nc4 Qe6+-) 17.Be6 (17.Be6 Kh8 18.Bd7 Bf2 19.Kf2+-) 1-0. ClayPigeons (2150) - dak001 (2085), Rated Bullet game, lichess.org, 2020.

4.e3 b6?? 5.Qh5+– g6 6.Qf3 d5 7.Qf6 Rg8 8.c4 Nd7 9.Qh4 Bb7 10.Qh7 g5 (better is 10...a6!?+–) 11.Nf3 Nf6 Black intends e4 12.Qc2 e4 13.Nd4 (better is 13.Bf6!? ef3 14.Qh7 Qd7 15.Be7 Rg7 16.Qh5 Ke7 17.Qf3 c5 18.cd5 Bd5+–) 13...Qd6 14.Nc3 Qe5 (14...0-0-0 15.cd5 Ned5 16.Ne4 Ne4 17.Qe4+–) 15.d3 (15.Rc1 Bg7+–) 15...Bg7 (15...ed3 16.Qd3 c5 17.bc6 Nc6 18.Nc6 Bc6 19.Rd1+–) 16.cd5 Nfd5 (16...ed3 17.Bd3 Nfd5 18.Bg6 Kd7 19.0-0-0+–) 17.Ne4 0-0-0 (17...c5 18.bc6 Nc6 19.Qa4+– (19.Nc6?! Qb2 20.Rc1 Qc2 21.Rc2 Kd7+–)) 18.Rb1 (better is 18.Qa4 c5 19.bc6 Nc6+–) 18...g4 (18...Nb4 19.Qc4 Nd3 20.Bd3 Be4 21.Be4 Qe4+–) 19.Nc6 Nb4 (19...Qe6 20.Nd8 Kd8 21.Qa4+–) 20.Qb3 Qb5 (20...Nbc6 21.Be5 Ne5 22.Qe6 Rd7+–) 21.Qe6 Rd7 22.Ne7 Kd8 23.Qg8 Ke7 24.Qg7 Kd8 (24...Ke6 25.Qf6 Kd5 26.Nc3 Kc5 27.d4 Rd4 28.ed4) 25.Qf8 1–0. Baumann,Heinz – Steingraeber,Barbara, RSX4D – A00 – Sokolsky–1, 2002.

4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Ne7).

4.e3 Nd5 5.c4 Nb6 6.Qh5 (6.d4 d6=) 6...g6 7.Qd1 (7.Qh4 Na4 8.Bc1 a6=) 7...Bd6 (7...d5!? 8.cd5 Nd5=) 8.a4+= c6? (better is 8...a5+=) 9.a5+– Nc4 10.Bc4 cb5 11.Bb3 (11.Bb5 Nc6+–) 11...Nc6 12.Nf3 (12.Nc3 b4 13.Nd5 Rf8+–) 12...Bb4 (12...Na5 13.d4 e4 14.Nfd2+/–) 13.0-0+– Ba5 (13...d5 14.Nc3 Bc3 15.dc3 Na5 16.Bd5+–) 14.Nc3 Bc3 (14...a6 15.Ne4 d6 16.d4+–) 15.Bc3 (15.dc3 d5+–) 15...a5 (15...d5 16.d4 e4 17.Nd2+/–) 16.Qe2 (16.Bd5 b4 17.Bb2 Ne7+/–) 16...b4 17.Bb2 b6 (17...d5 18.d4 e4 19.Nd2+–) 18.d4 (18.Rfc1 Ba6 19.Qd1 Qe7+–) 18...Ba6+/– 19.Qc2 (better is 19.Bc4!? Bc4 20.Qc4+/–) 19...Bf1= 20.Kf1 Qc7? (better is 20...ed4 21.Nd4 Rc8+=) 21.de5+– fe5?? (21...Rf8 22.ef6 b5 23.Qe4 Kd8 24.Be5+–) 22.Ne5! Ne5?? (22...Rf8 23.Bd5 Qd6+–) 23.Qc7 Rd8 24.Be5 (24.Qe5 Kf8 25.Qf6 Ke8 26.Qf7) 24...Rf8+– 25.Bg7 Rf7 26.Qe5 (26.Bf7 Kf7 27.Qe5 Rh8 28.Qf6 Ke8 29.Rc1 d5 30.Qe6 Kd8 31.Rc8) 26...Re7 27.Qf4 (27.Qf6 Rg7 28.Qg7 Rc8 29.Qf7 Kd8 30.Qf8 Kc7 31.Rc1 Kb7 32.Qc8 Ka7 33.Rc7) 27...Rg7 28.Rd1 (28.Qe5 Kf8 29.Qf6 Ke8 30.Qg7 Rc8 31.Qf7 Kd8 32.Qf8 Kc7 33.Rc1 Kb7 34.Qc8 Ka7 35.Rc7) 28...g5 29.Qe5 Re7 (29...Kf8 30.Qf6 Ke8 31.Qg7 d5 32.Ba4 b5 33.Bb5 Rd7 34.Rc1 d4 35.Rc8) 30.Qh8 1–0. GuestGBXM – GuestKHPK, freechess.org, 2016.

4.e3 d6 5.d4 Nd7 6.Bd3 a6 7.ba6 ba6 8.Nd2 Rb8 =.

4.e3 Nf5 5.Qh5 g6 6.Qd1 Nd6 7.c4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.Nc3 cb5 12.cb5 Qa5 13.Nf3 Be7 14.Be2 0-0 15.0-0 Qc7 16.Qb3 Rf7 17.Nd5 Qd8 18.d4 Kg7?? 19.de5 fe5 20.Ne5 Rf5 21.Nc6 Bf6 22.Nd8 Rd5 23.Qd5 (23.Qd5 Ba1 24.Ra1 Nc6 25.Nc6 Nf7 26.Qd4 Ne5 27.Qe5 Kg8 28.Bc4 d5 29.Bd5 Be6 30.Be6 Kf8 31.Ra8) 1–0. elsh1403 – januszko55, internet, 2011.

4.e3 g6 5.f4 d6 6.Nf3 Bg7 7.Bc4 d5 8.Bb3 e4 9.Nd4 0-0 10.c4 c5 11.cd5 Nd5 12.Ne2 Kh8= 13.0-0 Nb4 14.Nbc3 f5 15.Rc1 Nd3 16.Rc2 h6 17.Qa1 Kh7 18.Nc1 Nb2 19.Qb2=+ b6 20.a4 Bb7 21.Qa2 Nd7 22.Nd5 Nf6 23.Nf6 Qf6 24.d3 Rfd8 25.de4 Be4 26.Rd2 Rd2 27.Qd2 Rd8 28.Qe2 Qb2 29.Qb2 Bb2 30.Na2 Rd2 31.Rd1?? Rg2 32.Kf1 Rh2 33.Rd7 Bg7 34.Nc3 Rh1 35.Kf2 g5 36.Ne4= fe4 37.Ra7 gf4 38.ef4 Rh3 39.Bc2?? h5 0–1. elsh1403 – hazielklop, internet, 2011.

4.e4 a6 5.c4 (5.Qh5 g6 6.Qh4 Bg7=) 5...ab5+= 6.cb5 d5 7.ed5 Nd5 8.a4 Bf5 9.Bc4 (9.Nc3 Nb4 10.Rc1 Nd7–/+) 9...Nb4 (9...Nb4 10.Na3 Nd3 11.Bd3 Qd3–/+) 0–1. Neffgen,Dieter (1840) – Taulien,Hans_Juergen (2350), RSX4D – A00 – Sokolsky–1, 2002.

4.Nf3 d5 A) 5.e3 a6 6.Be2 ab5 7.Bb5 Bd7 8.Bd7 Qd7+=; B) 5.Ba3 Bg4 (5...d4 6.e3 de3 7.fe3 Ng6 8.Bf8 Rf8=) 6.d4 e4 7.Ng1 a6 8.h3 Bh5–/+; C) 5.h3 a6 (5...e4 6.Nd4 Nf5 7.e3 Bd6 8.c4 Be5=; 5...Nf5 6.e3 Bd6 7.c4 e4 8.Nd4 Be5=) 6.e3 Nf5 7.Nc3 Be6 8.ba6 Na6+=; D) 5.a3 a6 6.e3 Bg4 7.h3 Bh5 8.ba6 Na6+=; E) 5.d4 e4 6.Nfd2 e3 7.fe3 Nf5 8.Kf2 Qd7+=.

5.Nc3 dc4 6.e3 Be6 7.d3 cd3 8.Bd3 Nd5–/+.

5.d4 ed4 (5...dc4 6.de5 Qd1 7.Kd1 fe5 8.e4 Ng6=) 6.Qd4 Be6 7.cd5 Nd5 8.Nc3 Nc3+=.

5.cd5 Nd5 6.Nf3 Bf5 7.Nc3 Bc5 8.Qb3 Nc3+=.

5.e3 a6 6.d4 dc4 7.Bc4 ab5 8.Bb5 c6=.

5.e3 dc4 6.Bc4 Nf5 7.Nc3 a6 8.a4 ab5=.

5.e3 dc4 6.Nf3 c6 (6...Be6 7.Qc1=+) 7.Bc4= cb5 8.Bb5 Bd7 9.Bc4 Nbc6 10.Qb3 Nf5 (10...Qc7!?+=) 11.Bf7+/- (11.Qb7?? Rb8 12.Qa6 Nb4 13.Qa7 Nc2 14.Ke2 Rb2-+) 11...Ke7 12.Bd5 Nd6 13.Ba3 Qb6 14.Nc3 Qb3 15.ab3 Be6 (15...Kd8 16.Bc5+=) 16.e4 (better 16.Bc6 bc6 17.Ne4+/-) 16...f5? (better 16...Rc8=) 17.Nb5+- Rd8 18.Bd6 (18.Nd6 Rd6 19.Bc6 bc6+-) 18...Rd6 19.Nd6 Kd6 20.Be6 (20.Bc6!? bc6 21.ef5 Bb3 22.Ra7 Bd5+-) 20...Ke6+/- 21.ef5 Kf5 22.0-0 (22.d3 g5+/-) 22...Bc5 (22...Bb4 23.d3+/-) 23.Rac1 Bb6 (23...Bb4+/-) 24.Ne1 (better 24.Rc4!?+/-) 24...Rd8= 25.Nd3?? (better 25.d3=) 25...Rd3-+ 26.Rfe1 (26.Rc3 Rd2 27.Rh3 h6 28.Rf3 Kg6 29.Rg3 Kh7-+) 26...Rd8 (26...Rd2 27.Rf1 Nd4 28.Rb1-+) 27.Rc4 (27.Re2-+) 27...Rd2 28.Rce4 (28.Rf1 Rb2-+) 28...Rd8 (better 28...Bf2 29.Kf1 Be1 30.Re1-+) 29.Kh1 (29.Kf1 Rd3-+) 29...Rd3 (better 29...Bf2 30.g4 Ke6 31.R1e2 Rd1 32.Kg2-+) 30.h3 (30.g4 Kg6 31.f4 ef4 32.Rf4 Rb3 33.Kg2-+) 30...Bf2 31.R1e2 (31.g4 Ke6 32.R1e2 Bd4-+) 31...Bb6 (better 31...Bg3 32.Re1 Be1 33.Re1 Rb3 34.Rf1 Ke6 35.Rf8-+) 32.g4 Ke6 33.Kg2 (33.Rb2 Rh3 34.Rh2 Rb3 35.Rh7 Kf6-+) 33...Rb3 34.Rd2 Bd4 35.Ree2 (35.g5 Be3 36.g6 hg6-+ (36...Bd2?! 37.gh7 Bf4 38.h8Q Rg3 39.Kf2-/+)) 35...Re3 (better 35...a5!? 36.h4-+) 36.Re3 Be3 37.Rc2 (37.Rb2 b6-+) 37...Bd4 38.Re2 (38.Rc1 a5-+) 38...Kd5 39.Re1 e4 (39...b5 40.Kf1-+) 40.Rf1 (40.Rb1 b6-+) 40...b5 41.Rf5 Ne5 42.Rf7 (42.Rf8-+) 42...Nf7 43.g5 Ng5 44.h4 Ne6 45.Kg3 h5 46.Kh3 (46.Kg2 Nf4 47.Kg3 Ke5 48.Kh2 e3 49.Kg1 e2 50.Kh2 a5 51.Kg3 e1Q 52.Kf3 Qe3) 46...b4 (46...e3 47.Kg3 e2 48.Kg2 e1Q 49.Kh2 Qf2 50.Kh3 Nf4) 47.Kg2 (47.Kh2 e3 48.Kg2 e2 49.Kf3 e1Q 50.Kg2 Nf4 51.Kf3 Qe3) 47...b3 48.Kh3 (48.Kf1 b2 49.Kg2 a5 50.Kg3 b1Q 51.Kg2 Qg1 52.Kh3 Nf4) 48...b2 49.Kh2 (49.Kg2 b1Q 50.Kh2 Qg1 51.Kh3 Nf4) 49...b1Q 50.Kg2 Qd3 (50...Qd3 51.Kh2 Qf1 52.Kg3 Be5; 50...Qg1 51.Kh3 Nf4) 0-1. ClayPigeons (2015) - poisoned_pawn22 (2030), Rated Bullet game, lichess.org, 2020.

5.e3 Nd7 6.d4 c6 7.cd5 Nd5 8.de5 fe5=.

5.e3 Be6 6.c5 Ng6 7.d4 Be7 8.Nf3 0-0=.

5.e3 Bf5 6.d4 Nd7 7.Nd2 c5 8.de5 Ne5=.

5.Nc3 a6 (5...Bc5 6.Nf3 0-0 7.e3 a6 8.Qb3 Re8=; 5...Bb4 6.Nf3 d6 7.e3 0-0 8.Be2 a6=; 5...Be7 6.Nf3 d6 7.e4 0-0 8.d4 Bg4=; 5...d6 6.Nf3 Bg4 7.h3 Bf3 8.ef3 Be7=) 6.e4 Bc5 7.Nf3 0-0 8.d4 ed4=.

5.d4 Bb4 6.Nd2 d5 7.cd5 Qd5 8.Rc1 Qa2–/+.

5.e3 a6 6.Qh5 d5 7.cd5 Qd5 8.Nc3 Qd6=.

5.e3 Bb4 6.Bc3 (6.Bd3 a6 7.Qh5 Kf7 8.Nf3 ab5+=) 6...Bc3 7.Nc3 0-0 (7...d6 8.Nf3 a6=) 8.d4 (8.Qh5 Ne7=) 8...ed4 (8...d6=) 9.Qd4 c6 (9...Ne5 10.Rd1+=) 10.Bd3 Qe8 (10...Ne5 11.Nge2+=) 11.Nge2 Qe5 (11...Ne5!? 12.Rd1 Qe7+/–) 12.Bg6 hg6 13.Qe5 fe5 14.Rd1 a6 (14...b6 15.f4+/–) 15.a4 (better is 15.b6!?+–) 15...ab5 16.ab5 d5 (better is 16...b6!?+/–) 17.cd5+– cd5 18.Nd5 Bg4 19.f3 Be6?? (19...Bc8+–) 20.Nc7 (20.Nc7 Bb3 21.Na8 Bd1 22.Kd1+–) 1–0. Suess,Stefan – Zschommler, Adelsheim, 1985.

5.e3 Bc5 6.Bd3 Qe7 7.Nc3 d6 8.Qh5 Qf7=.

5.e3 c6 6.d4 cb5 7.cb5 d5 8.de5 fe5=.

5.e3 d5 6.cd5 Qd5 7.Qc2 c6 8.Nc3 Qe6=.

5.e3 Be7 6.d4 ed4 7.Bd4 Bb4 8.Nd2 d6=.

5.e3 Be7 6.Nf3 0-0 7.Qc2 Kh8 (7...d6 8.d4=) 8.d4 (8.Bd3 d5 9.Bg6 hg6+/-) 8...d6 (8...ed4 9.Bd4 Bb4 10.Nbd2+=) 9.Bd3 Qe8 10.h4 Rf7 (better 10...ed4!? 11.Bd4 Bg4+/-) 11.h5 Nf8 12.Bh7?? (better 12.Bg6+-) 12...Nh7-/+ 13.h6 g5 14.Nc3 Bg4 (14...Bf8 15.Qe4-/+) 15.de5 (15.Qe4 Qc8-/+) 15...de5 16.Nd5 (16.Qe4 Qc8-/+) 16...Bf3 17.Nc7?? (better 17.gf3 c6 18.Ne7 Qe7 19.a3-+) 17...Qd7 (better 17...Bb4 18.Kf1 Bg2 19.Kg2 Rc7-+) 18.Na8=+ Bg2 19.Rg1 Bf3 (better 19...Bb4!? 20.Bc3 Be4-+) 20.b6 (20.Rg3 Bb4 21.Kf1 e4-+) 20...a5 (20...Na6 21.Rg3 (21.ba7?? Nb4 22.Qc3 Nd3 23.Kd2 Nb2 24.Kc2 Na4-+) 21...Qc6 22.ba7-/+) 21.Nc7 Bb4 (21...Qc6 22.Qb3-/+) 22.Bc3=+ Na6 (22...Qd6=+) 23.a3?? (better 23.Na6 ba6 24.Bb4 ab4 25.c5+=) 23...Bc3 24.Qc3 Nc5 (better 24...Nc7 25.bc7 Qc7-+) 25.Rg3? (25.Nd5 Qf5-/+ (25...Bd5?! 26.cd5 Qb5 27.f3-/+)) 25...g4 (25...Ne4 26.Qc2 Ng3 27.fg3-+) 26.Nb5? (better 26.Qc2-/+) 26...Ng5 27.Rc1 (27.Rf3 Nd3 28.Kd1 Nf2 29.Kc2 Nf3 30.Rc1-+) 27...Nge4 28.Qb2 (28.Qc2 Nd3 29.Kf1 Ng3 30.fg3-+) 28...Ng3 (28...Nd3 29.Kf1 Nb2 30.Nd4 ed4 31.Rg2 g3 32.Kg1 Qh3 33.Kf1 Qg2 34.Ke1 Qf2) 29.fg3 Nd3 30.Kf1 Nb2 31.Rd1 Qd1 32.Kf2 Qe2 (32...Nd3) 33.Kg1 Qg2 0-1. ClayPigeons (2125) - dahen_soran (2145), Rated Bullet game, lichess.org, 2021.

5.e4 a6 (5...Bc5 6.Nf3 d6 7.d4 ed4 8.Bd4 Nd7=; 5...Bb4 6.Nf3 d6 7.a3 Bc5 8.d4 ed4=; 5...Nf4 6.Nf3 Bc5 7.d4 ed4 8.Qd2 Ne6=; 5...Be7 6.Nf3 0-0 7.d4 Bb4 8.Bc3 Bc3=) 6.d4 ed4 7.Bd4 Bb4 8.Bc3 Qe7=.

5.Nf3 a6 (5...d5 6.cd5 Qd5 7.Nc3 Qd6 8.d4 Qb4=) 6.e4 ab5 7.cb5 d5 8.ed5 Qd5=.

5.Qd4 a6 6.e4 ab5 7.Bb5 Nbc6 8.Qd1 Ra5=.

5.Qd4 b6 6.Qh4 Bb7 7.Qh5 Ng6 8.e3 a6=.

5.Qd4 c6 6.e4 cb5 7.Bb5 Nbc6 8.Qa4 a6=.

5.Qd4 d5 6.e4 Be6 7.Bd3 a6 8.e5 c5=.

5.Qd4 Ng6 6.Nc3 c6 7.e4 Be7 8.Nf3 0-0 (8...d6 9.Qd2+=) 9.Be2 (9.Bc4 Kh8+/–) 9...Qe8 (9...a6 10.b6+=) 10.0-0+/– cb5 (10...d6!?+/–) 11.Nb5 Nc6 (11...Na6!?+/–) 12.Qd5+– Qf7 13.Qf7 (13.Qf7 Rf7 14.Bc4+–) 1–0. Taulien,Hans_Juergen (2350) – Neffgen,Dieter (1840), RSX4D – A00 – Sokolsky–1, 2002.

5.Qd4 Ng6 6.e4 a6 7.Nf3 ab5 8.Bb5 Nc6=.

5.Bd4 d5 6.e3 Ng6 (6...Nf5 7.Nf3=) 7.Bd3 Be6 8.Nd2 Bd6 9.Qh5 Bf7 10.Bg6 Bg6 11.Qd5 Qc8 12.Ne2 (12.Nc4 Be7 13.Bc5 Bc5 14.Qc5 Nd7+/–) 12...Bf7 (12...Bc2 13.0-0+=) 13.Qe4+/– Be6 14.Nf4 Bf4 15.Qf4 0-0 16.a4 Nd7 17.0-0 c6 18.c4 c5 19.Bc3 b6 20.Ne4 Bc4?? (better is 20...a6+/–) 21.Nd6+– (21...Bf1 22.Nc8 Bg2 23.Qc4 (< 23.Kg2 Rfc8 24.Qg4 Ne5 25.Be5 fe5+–) 23...Kh8 24.Nd6+–) 1–0. Baumann,Heinz – Neffgen,Dieter, RSX4D – A00 – Sokolsky–1, 2002.

5.Bd4 Nf5 6.Bb2 d5 7.e3 a6 8.Nd2 Bb4 9.c3 Be7 (9...Bd6 10.c4 Be6 11.cd5+/–) 10.Ngf3 (10.e4 de4 11.Ne4 0-0=) 10...Nd6 11.ba6 Na6 12.c4 dc4 13.Nc4 Be6 14.Nd6 Bd6 (worse is 14...cd6 15.Bb5 Bd7 16.Bd7 Qd7 17.0-0+/–) 15.Bc3 (15.Bb5 c6 16.Be2 Bb4 17.Kf1 Qd1 18.Bd1 Nc5+=) 15...Qd7 16.Nd4 Nc5 17.a3 (17.Ne6 Qe6 18.Bb5 c6+=) 17...Be5 18.Qc2 Bd5 19.Rd1 Ra3 (19...Be4 20.Qb2 Na4+=) 20.Bb5?? (20.Bb4 Bd4 21.Ba3–/+) 20...c6–/+ 21.Bb4 Bd4?? (21...Bg2 22.Rg1 A) 22...cb5? 23.Ba3 Bd5 24.Bc5+– (24.Qc5 b4 25.Bb4 Bh2 26.Rg7 Qg7 27.Qc8 Kf7 28.Qd7 Kg6 29.Qg4 Kf7 30.Qh5 Qg6 31.Qd5 Kg7 32.Nf5 Qf5 33.Qf5 Bd6 34.Rd6 Rf8 35.Rd7 Rf7 36.Qg4 Kh6 37.Rf7 b5 38.Rf6); B) 22...Bd4 23.Rg2 Ra1 24.ed4 Qd4 25.Bc5 Rd1 26.Qd1 Qc5+=) 22.Ba3+= Bb3 23.Qc5 Bc5 24.Rd7 Kd7 25.Bc5 cb5 26.Kd2 Rc8 27.Rc1 Ke6 28.e4 b6 29.Bd4 Rc1 30.Kc1 b4 31.g4 g5 32.Kd2 b5 33.Bc5 Ke5 34.f3 (34.Ke3 Bc2+=) 34...Bc4 35.Ke3 b3 36.Bd4 Ke6 37.Bb2 Ke7 38.f4 b4 39.e5 (39.Kd4 Be6 40.f5 Bf7=) 39...fe5+= 40.fg5 (40.fe5 Be6+=) 40...Be6 (40...Ke6 41.h4–/+) 41.h3? (better is 41.Be5!? Bg4 42.h4=) 41...Kd6–/+ 42.Ke4 Bd5 43.Kf5 Bc6 (43...e4!?–/+) 44.Be5+= Kd5 45.Kf4 Kc4 46.Ke3 Bd7 47.Bb2 Bc8 ½–½. Baumann,Heinz – Taulien,Hans_Juergen, RSX4D – A00 – Sokolsky–1, 2002.

5.Bd4 Nf5 6.e3 Nf5 7.Nf3 Nd4 8.Nd4 c5=.

5.Bd4 Nf5 6.Nf3 d5 7.e3 a6 8.ba6 Na6=.

5.Nf3 a6 6.ba6 ba6 7.Nd4 Nbc6 8.e4 Rb8=.

5.Nf3 c5 6.bc6 dc6 7.Qd4 Qc7 8.e4 Ng6=.

5.Nf3 c5 6.bc6 dc6 7.Qd4 Qd4 8.Nd4 Nf5 9.Nb3 Nd6 10.N1d2 Be6 11.e4 Nd7 12.Be2 0-0-0 13.0-0 Nb6 14.a4 Nbc4 15.Bc3 Nd2 16.Nd2 Nf7 17.Rfd1 Bd6 18.Nb3 Rhe8 19.f3 Kc7 20.g3 Be5 21.Be5 Ne5 22.Kf2 Nc4 23.Rd8 Rd8 24.Bc4 Bc4 25.Ke3 b6 26.a5 Kb7 27.g4 ½-½. pcmvr – marekt, net-chess.com, 2020.

5.Nf3 d5 6.Nd4 Bg4 7.h3 Bh5 8.Nc3 Qd6=.

5.Nf3 Nf5 6.Nd4 Bb4 7.Nd2 d5 8.a3 Bc5=.

5.d5 Bf5 6.c4 Nd7 7.Nc3 Nc5 8.f3 h6 9.e4 Bg6 10.Bd3 Nc8 11.Nge2 Nb6 12.0-0 Qd7 13.Qc2 Nd3 14.Qd3 f5 15.a4 Nc8 16.Ng3 f4 17.Nge2 Be7 18.Ba3 b6 19.a5 Bg5 20.Kh1 h5 21.Ng1 h4 22.Nh3 Bh6 23.ab6 ab6 24.Bb4 Ra1 25.Ra1 0-0 26.Nd1 Bh5 27.Ndf2 g5 28.Ng1 g4 29.h3 g3 30.Nd1 Ne7 31.Ra7 Rb8 32.Qa3 Nc8 33.Ra8 Ra8 34.Qa8 Bf8 35.Qc6 Qe7 36.Qb7 Qd8 37.Nc3 Ne7 38.Na4 Be8 39.Nb6?? cb6–+ 40.Ne2 Nc8 41.Bc3 Qd7 42.Qc6 Qc6 43.bc6 Na7 44.Kg1 Be7 45.Bb4 Kf7 46.Nc3 Nc8 47.Nb5 Kf8 48.Nc7 Bf7 49.Ne6?? Be6–+ 50.de6 Kg7 51.Kf1 Kf6 52.Ke2 Ke6 53.Kd3 Kf6 0–1. iczker – kszz, internet, 2011.

5.e4 Nd7 6.Nf3 =.

5.e4 Be6 6.Nf3 Nd7 (6...a6 7.d5 Bg4 8.Nc3+=) 7.Nbd2 (7.Bd3 Nb6+=) 7...g6 (7...Nb6 8.d5 Bg4 9.h3+=) 8.Bc4+= Bc4 9.Nc4 Bg7 (9...a6 10.a4+=) 10.0-0 0-0 11.a4 Qe8 12.Na5 (12.Re1 Qf7 13.Na5 Rab8+=) 12...b6 13.Nb3 Qf7 (13...a6 14.Qe2+=) 14.de5 (14.a5 f5 15.ef5 Qf5 16.de5 Ne5 17.Ne5 Be5 18.Be5 de5+=) 14...Ne5 15.Ne5 (15.Be5 fe5 16.Qd3 d5+=) 15...de5 (15...fe5 16.a5+=) 16.Qe2 (16.Qd7 f5+=) 16...Nc8 (16...c6 17.Rfd1+=) 17.Rfd1+/– Nd6 18.Rd5 (18.a5 Rad8+=) 18...f5 19.Rad1 Qe6 (19...Ne4 20.f3 (worse is 20.Be5 Be5 21.Re5 Nc3–/+) 20...Nf6 21.Re5+=) 20.ef5+/– gf5 (20...Rf5 21.c4 Raf8 22.Nd4 Rf2 23.Ne6 Re2 24.Nf8 Bf8 25.Be5 Nc4 26.Bd4+/–) 21.Ba3 (21.a5 Nf7+/–) 21...Rfd8 22.c4 Qg6 (22...Qf6 23.a5+/–) 23.a5 (23.Bb2 e4+/–) 23...Qf6 (23...Nf7 24.Rd8 Nd8 25.Bb2+/–) 24.c5 (24.Bd6 Rd6 25.Rd6 cd6+/–) 24...Nf7 25.Bb2 (25.Rd7 Rd7 26.Rd7 Qe6+=) 25...Rd5+= 26.Rd5 c6 (26...ba5 27.Na5 a6 28.Rd7+=) 27.Rd7 Qe6 28.Qd3 f4 (28...cb5 29.Qb5 ba5 30.c6+=) 29.bc6 (29.cb6 ab6 30.ab6 e4+/–) 29...e4+= 30.Qh3 (better is 30.Qd5 Qd5 31.Rd5 ba5 32.Bg7 Kg7 33.Rd4+/–) 30...Qc6? (better is 30...Qh3 31.gh3 ba5 32.Bg7 Kg7+=) 31.Bg7+– Kg7 32.Qf5 The mate threat is Rxf7 32...Qg6 33.Qf4 Qe6 34.Qg3 Kf8 35.Rd1 (35.Rd4 Rd8 36.cb6 ab6 37.Rd8 Nd8+–) 35...ba5 36.Na5 The passed pawn on c5 quickly leads to threats 36...Qe7 (36...Rd8 37.Re1+–) 37.c6 Rd8 Threatening mate... how? 38.Rb1 (38.Ra1 Rd3 39.Qb8 Kg7+–) 38...Qb4 Threatening mate: Qxb1 39.Nb3 (39.Rb4?? Rd1) 39...Qc4 40.c7 Rd6 41.Nd2?? (41.Nd4 Rd4 42.Rb8 Ke7 43.Qh4 Kd6 44.Rd8 Kc7 45.Qe7 Kb6 46.Rb8 Kc6 47.Rc8 Kb6 48.Rb8 Kc6 49.Rc8 Kb6 50.Rb8=) 41...Qc7+/– 42.Ne4 (42.h3 Qe7 43.Rb8 Rd8 44.Rd8 Qd8 45.Ne4 a5+/–) 42...Rb6 Do you see the mate threat? 43.Qa3 (43.Qc7?? Rb1 44.Qc1 Rc1) 43...Kg7 (43...Qe7!? 44.Qe7 Ke7+/–) 44.Rc1 (44.Re1 a6+–) 44...Rc6 (44...Rb3 45.Qa1 Qe5 46.Qa4+/–) 45.Rc6 (45.Re1 Kg8+–) 45...Qc6+/– 46.f3 (46.Nc5 Qb5 47.f4 a5+/–) 46...Qb6 47.Qc5 Qb1 (47...Ne5 48.Qb6 ab6 49.Kf2+/–) 48.Kf2 Qb2 49.Kg3 Qb8 (49...a6 50.f4+/–) 50.f4 Qd8 (50...Qb3 51.Kf2+/–) 51.Qc3 Kf8 (51...Kg6 52.Kf3+/–) 52.f5 a5 53.f6 Qb8 54.Kg4 h5 55.Kh3 (55.Kh5?! Qh2 56.Kg4 Qg2 57.Kf5 Qf1 58.Ke6 Qa6 59.Kd5 Qb7 60.Kd4 Qd7 61.Ke3 Qh3 62.Kd2 Qc3 63.Kc3 Ne5=) 55...Qb7 56.Qg3 (56.Qa3 Qb4 57.Qb4 ab4+/–) 56...Qd5+/– 57.Qa3 (better is 57.Qg7 Ke8 58.Qg8 Kd7 59.Qg6+/–) ½–½. Welti,Manfred – Hallberg,Kristjan (1845), corr ICCF EM–C–A026, 1997.

5.d4 ed4 6.Qd4 ab5 7.Bb5 Nbc6 8.Qd1 Ng6 9.Nf3 Bb4 10.Bc3 Qe7 11.0-0 Qc5 12.Bc6 dc6 13.Bb4 Qb4 14.Qd3 0-0 15.a3 Qa4 16.Nc3 Qg4 17.Rfb1 (17.h3 Qe6+=) 17...Ne5= 18.Ne5 fe5 19.f3 (19.Qe4 Qh5=) 19...Rf3+= 20.Qe2 e4 21.Rb4 (better is 21.Kh1!? Rf6 22.Qg4 Bg4 23.Ne4+/–) 21...Qg6 22.Ne4 Rf7 23.Ng3 b6 24.Qd3 Qg5 25.Qc3 c5 26.Re4 Bd7 27.Re5 Qg4 28.Re4 Qg6 29.Rd1 Raf8 30.Qc4 Kh8 31.Qe2 h6 (31...Bc6 32.Re5–/+) 32.Qh5 Qh5 33.Nh5 Ra8 (33...Bf5 34.Rc4+=) 34.Ra1 g6 35.Ng3 Kg7 36.h4 Ba4 37.c3 Bc6 38.Rg4 b5 39.Nh5 Kh7 40.Ng3 Ra6 41.Ne2 h5 42.Rg5 Rf5 43.Rf1 Rg5 44.hg5 Bd5 (44...Ra3?! 45.Rf7 Kg8 46.Rc7+=) 45.Nf4 c6 46.Ra1 Bc4 47.g4 h4 48.Rd1 (48.Kg2 Kg7–/+) 48...Bf7 (48...Ra3 49.Rd7 Kg8 50.Ng6 Rc3 51.Nh4 Re3 52.Nf5–/+) 49.Rd7 Kg8 50.Nd3 Ra3 51.Ne5 Bd5 (51...Be6 52.Re7 Ra1 53.Kh2 Bd5 54.Re8 Kg7 55.Re7 Kg8 56.Re8 Kh7 57.Re7 Kg8=) 52.Rd8+= Kg7 53.Rd7 Kf8 54.Ng6 Ke8 55.Re7 Kd8 56.e4 Ba2 57.Kh2? (57.Rh7 Bg8 58.Rh8 Ke8+=) 57...b4 (57...Rc3 58.Ra7 Bb1 59.Nh4 Be4 60.g6=) 58.cb4 cb4 59.Rb7 c5 60.Ne7? (better is 60.Nh4!? Re3 61.Ra7+=) 60...Rd3 61.Nc6 ½–½. Taulien,Hans_Juergen – Baumann,Heinz, RSX4D – A00 – Sokolsky–1, 2002.

5.d4 ed4 6.Bd4 Nf5 7.Nf3 d5 8.Bd3 ab5 =.

5.Nc3 a6 6.a4 d5+=.

5.c4 d5 6.a4 Be6 7.Qb3 cb5 8.ab5 a6 9.Nc3 d4 10.Ne4 Nf5 11.Nf3 Be7 12.Ba3 0-0 13.Be7 Qe7 14.Bd3 Nd7 15.0-0 Nc5 16.Nc5 Qc5 17.Rfc1 ab5 18.Qb5 Qb5 19.cb5 Ra1 20.Ra1 Nd6 21.ed4? e4–+ 22.Re1 ed3?? 23.Re6= Nb5 24.Rb6 Na3 25.Rb7 Rc8 26.g3 Nc2 27.d5 Rd8 28.Rb5 Na3 29.Rb3 Nc4 30.Rd3 Ne5 31.Ne5+– fe5 32.Kg2 Kf7 33.Kf3 Ke7 34.Ke4 Kd6 35.Ra3 Re8 36.Ra6 Kc5 37.Ra5 Kd6 38.Ra6 Kc5 39.Rc6 Kb5 40.Rc7 Rf8 41.f3 g6 42.Rh7 Rf6 43.Re7 Kc5 44.Re5 Rd6 45.d4 Kc4 46.h4 Rf6 47.g4 Rd6 48.h5 gh5 49.Rh5 Rf6 50.Rf5 Rd6 51.Re5 Rf6 52.f4 Rd6 53.f5 Rf6 54.Re6 (54.Re6 Rf8 55.g5+–) 1–0. elsh1403 – rossolimo, internet, 2011.

5.d4 ed4= 6.ed4 a6 7.ba6 (7.Bd3!?=) 7...Na6=+ 8.Nf3 Nd5 (8...Qb6 9.Qc1 d5 10.Be2=+) 9.Be2 (9.Bc4 Qe7 10.Kf1 Nac7=+) 9...Qb6 10.Bc1 Bb4 11.Bd2 Bd2 12.Nbd2 0-0 13.0-0 Nc3 (13...Nc3 14.Qe1 d5-/+) 0-1. drink1966 – marekt, ChessWorld.net, 2020.

5.d4 ed4= 6.ed4 d5 7.bc6 (better is 7.Nf3!?=) 7...Nbc6–/+ 8.Bb5 (8.Nc3 Nf5 9.Nf3 Bb4–/+) 8...Nf5 9.Nf3 Qa5 10.Nc3 Ba3 11.Bc6? (better is 11.Qc1 Bb4 12.Qd2–/+) 11...bc6–+ 12.Qc1 Bb2 13.Qb2 Rb8! 14.Qb8 Qc3 15.Kd1 Qa1 16.Ke2 (16.Kd2 Qh1 17.Qc8 Ke7 18.Qf5 Qg2–+) 16...0-0 (16...Qh1?! 17.Qc8 Ke7 18.Qh8 Qg2 19.Qb8–+) 17.Qc8 (17.Ra1 Ba6 18.Kd2 Rb8–+) 17...Qh1 (17...Rc8?! 18.Ra1 Rb8 19.Kd3=; 17...Nd4 18.Nd4 Qh1 19.Qe6 Kh8 20.g4–+) 18.Qf5 (18.Qe6 Kh8 19.Qf5 Re8 20.Kd2 Qf1–+) 18...Re8 19.Ne5 (19.Kd3 Qf1 20.Kc3 Qf2 21.a4–+) 19...fe5 20.Qd7 Kf8 21.Qd6 (21.Qf5 Ke7 22.Qh7 Qg2 23.de5 Qg5–+) 21...Re7 22.de5 (22.Qc6 Qg2 23.Qc8 Re8 24.Qc5 Kg8 25.de5 Re5 26.Kd2 Rf5–+) 22...Qg2 23.e6 (23.Qc6 Re5 24.Kd2 Qf2 25.Kc3 Qe3 26.Kb4 Re4 27.Kb5 Qe2 28.Ka5 Qc4 29.Qc4 Rc4–+) 23...Qe4 24.Kf1 Qe6 25.Qb8 Kf7 26.Qf4 Kg8 27.Qb8 Re8 28.Qa7 (28.Qb3–+) 28...Qh3 29.Kg1 Re1 0–1. libelle_3 (1860) – marekt (2160), gameknot.com, 2014.

5.d4 ed4= 6.Bd4 Nf5=.

5.d4 d5 6.de5 fe5 7.c4 Be6 8.cd5 Bd5 =.

5.Nf3 d5 6.c4 c6 7.a4 Be6 8.Qb3 Nd7 9.d4 e4 10.Nfd2 Be7 11.Be2 0-0 12.0-0 Rb8 13.f3 f5 14.Nc3 Nf6 15.fe4 fe4 16.cd5 cd5 17.Nce4 Ne4 18.Ne4 Rf1 19.Rf1 Qb6 20.Nc3 Rc8? 21.Bf3 Qd6 22.Ra1?? Bd8? 23.Ba3+– Qd7 24.Bd5 Bd5 25.Qd5 Qd5 26.Nd5 h5 27.Rc1 Rc1 28.Bc1 Kf7 29.e4 Ke6 30.Kf2 Bb6 31.Ke3 Bd8 32.Bb2 Bg5 33.Kd3 Bf4 34.Nf4 Nf4 35.Kc4 Ng2 36.Kc5 g5 37.d5 Kd7 38.e5 Nf4 39.e6 Ke7 40.Be5 (40.Be5 Nd3 41.Kd4+–) 1–0. elsh1403 (1615) – mercedes1500, internet, 2011.

5.Nf3 d5 6.c4 Be6 7.cd5 Bd5 8.Nc3 c6 9.a4 Bb4 10.Nd5 cd5 11.Qb3 Ba5 12.Ba3 a6 13.Be2 Ne7 14.0-0 ab5 15.ab5 Nd7 16.Rfc1 Nb6 17.Bc5 g5 18.d3 h5 19.Rc2 h4? 20.Rac1?? g4+= 21.Nd2 Bd2 22.Rd2 0-0? 23.Bg4+– Re8 24.Be6 Kg7 25.Qb4 Ng6 26.Bf5 Rh8 27.Qg4 Rh6 28.Rdc2 Na4 29.Bb4 1–0. elsh1403 – hazielklop, internet, 2011.

5.d4 de4 6.Qh5 (6.de5 Qd1 7.Kd1 Nd7+=) 6...Ng6 (6...g6 7.Qe2 ed4 8.Qe4–/+) 7.Nd2 (better is 7.de5!? Nd7 8.ef6 Nf6 9.Qg5+=) 7...ed4–/+ 8.Ne4 Qe7 9.Qe2 a6 (9...Nf4 10.Qf3 Qb4 11.Bc3 Ng2 12.Bg2 dc3 13.Qh5 Kd8 14.Ne2–/+) 10.a4 (10.Bd4!? ab5 11.Nc3–/+) 10...Bf5 11.f3 (11.Ng3 Bc2 12.Bd4 Qe2 13.Be2 Bb4 14.Kf1 ab5 15.ab5 Ra1 16.Ba1 Nf4–/+) 11...Nf4 12.Qd2 Be4 13.Qf4 Bc2 14.Kf2 Qe3! 15.Qe3 de3 16.Ke3 Nd7 17.Kd2 Bg6 18.Bc4 (18.Re1 Kd8 19.ba6 ba6–/+) 18...Nb6–+ 19.Bb3 0-0-0 20.Kc1 Bc5 21.Ne2?? (better is 21.Bc3–+) 21...Be3 0–1. Steingraeber,Barbara (2240) – Baumann,Heinz (2355), RSX4D – A00 – Sokolsky–1, 2002.

5.ed5 Nd5 6.c4 Nf4 7.Qc2 a6 8.a4 g6 9.Nf3 Bf5 10.Qc3 ab5 11.ab5?? (better is 11.cb5 Qd5 12.Kd1–+) 11...Ra1–+ 12.Ba1 Bb1 0–1. Neffgen,Dieter (1840) – Baumann,Heinz (2355), RSX4D – A00 – Sokolsky–1, 2002.

5.ed5 Nd5 6.c4 Nf4–/+ 7.Nc3 Be6 8.Nf3 (8.Qf3 c6+=) 8...Bc5 (8...Nd3 9.Bd3 Qd3 10.Nd5 Qc4 11.Nc3–+) 9.Ne4+= Bb4 10.Bc3 Bc3 11.dc3 Qd1 12.Rd1 0-0 13.Nc5 b6 (better is 13...Bc8!?=) 14.Ne6+/– Ne6 15.Bd3 Nc5 16.0-0?? (16.Bf5 a6+=) 16...Nbd7?? (better is 16...Nd3 17.Rd3 e4–+) 17.Bf5 Rfd8 18.Rfe1 Nf8 19.h3 Rd1 20.Rd1 g6 21.Bc2 Nfe6 22.Kf1 Kg7 23.Nh2 (23.Ke1 Nf4 24.Kf1 a6+=) 23...f5 Black prepares the advance e4 24.f3 e4 (24...a6 25.Bb1–/+) 25.fe4+= fe4 (worse is 25...Ne4 26.Be4 fe4 27.Rd7 Kh8 28.Ng4 Rf8 29.Ke2 Nf4 30.Ke3 Ng2 31.Ke4+=) 26.Re1 Rf8 27.Kg1 Re8 28.Ng4 h5 29.Nh2 (better is 29.Nf2+=) 29...Nf4–/+ 30.Nf3 (30.Re3 Kf6–/+) 30...e3 (30...Ng2 31.Kg2 ef3 32.Kf2 Re1 33.Ke1–/+) 31.Nd4 h4 32.Nc6 (32.Nf3 Ncd3 33.Bd3 Nd3–/+) 32...Ncd3 33.Bd3 Nd3 34.Re2 Nc1 (34...Nf4 35.Re1–/+) 35.Rc2 Nd3 (35...e2 36.Rc1 e1Q 37.Re1 Re1 38.Kh2–+) 36.Nd4 (36.Re2 Nf4 37.Re1 Kf6–/+) 36...Ne1?? (better is 36...Kf6–+) 37.Re2+= Nd3 38.Nc6 (better is 38.Nc2+=) 38...Nf4–/+ 39.Kf1 (39.Re1!?–/+) 39...Re4 40.Nd4 (40.c5 Ne2 41.Ke2 Rc4–+) 40...Ne2 41.Ke2 Kf6 42.Kf3 e2 (42...Ke5 43.Ne2–+) 43.Ne2 Rc4 44.Ke3 (44.g4 c6 45.bc6 Rc6–+) 44...Ra4 (44...Ra4 45.Nd4 Ra2–+) 0–1. Neffgen,Dieter – Steingraeber,Barbara, RSX4D – A00 – Sokolsky–1, 2002.

5.ed5 Nd5 6.Bc4 Be6 7.Nf3 Bc5 8.d4= ed4 9.0-0 0-0?? 10.Nd4+= Nd7?? 11.Ne6+– (11.Ne6 Qe7 12.Nf8+–) 1–0. gtate (1930) – roadrunner (1975), net–chess.com, 2005.

5.ed5 Nd5 6.Bc4 Nf4 7.Qf3 Bc5=+.

5.Qh5 g6 6.Qf3 Bg7 7.d4 de4+= 8.Qe4 f5 9.Qf3 ed4 10.Bc4 Nd7 11.Ne2 Ne5 12.Qb3 c5 (12...Nc4?! 13.Qc4 Qd6 14.Nd4+=) 13.0-0 Nc4 14.c3?? (better is 14.Qc4 Qd6 15.c3–+) 14...Nb2–+ 15.Qb2 d3 16.Nf4 Qd6 17.Qd2 c4 18.a4 Bh6 19.g3 Nd5 20.Qa2 (20.Qe1 Kf7 21.Nd5 Qd5–+) 20...Nf4 21.Re1 (21.gf4 Be6–+) 21...Ne2 22.Kf1 (22.Re2 de2 23.Qe2 Qe6–+) 22...Be6 (22...Be6 23.Re2 de2 24.Qe2 0-0-0–+) 0–1. Steingraeber,Barbara (2240) – Taulien,Hans_Juergen (2350), RSX4D – A00 – Sokolsky–1, 2002.

5.Qh5 g6 6.Qf3 Bg7 7.ed5 Qd5 (7...Nd5 8.Bc4 Nb6 4.e4) 8.Nc3 Qe6 9.Qd5?? (better is 9.Rb1=) 9...Qd5 (better is 9...Nd5 10.Bc4 c6–+) 10.Nd5 Nd5 11.Bc4 Nb6 12.Bb3 a6 13.ba6 ba6 (13...Na6 14.Ba3–+) 14.Ne2 Bb7 15.0-0 N8d7 16.d3 0-0-0 17.Rfe1 Rhg8! 18.Bg8 Rg8 19.Rab1 Bd5 20.Nc3 Bf7 21.a4 a5 22.Bc1 Nc5 23.Rb5 Ne6 (23...Nb7 24.Be3 Be8 25.Rb3 Na4 26.Nd5–/+) 24.Ra5 Nd4 25.Be3 Nc2 26.Rc1 Ne3 27.fe3 Bh6 28.Kf2 Rd8 29.Ke2 Bd5 30.Nb5 (30.g4 Bc6–/+) 30...c6–+ 31.Ra7 Kb8 (31...Bg2 32.Rh7 Kb8 33.Nc3 Be3 34.Ke3 Nd5 35.Nd5 Bd5 36.Rb1 Ka8 37.Rbb7+–) 32.Rh7 cb5 (32...Be3 33.Ke3 cb5 34.ab5 Bg2 35.Rg1 Nd5 36.Kf2+=) 33.Rh6+= ba4 34.Rg6 Nd7 35.e4 Be6 36.Rc6 =. Taulien,Hans_Juergen (2350) – Steingraeber,Barbara (2240), RSX4D – A00 – Sokolsky–1, 2002.

5.Qh5 g6 6.Qf3 Bg7 7.ed5 Nd5 8.Bc4 Nb6 =.

5.Qh5 Ng6 6.ed5 Qd5 7.Nc3 Qd6 8.Ne4?? (better is 8.Bd3 Rg8 9.Qh7+/–) 8...Qb4–+ 9.Bd3 (9.Nf6 gf6 10.0-0-0 Bg4 11.Qg4 Qg4–+) 9...Qb2 10.Qd1 Qd4 (10...Nf4!? 11.Bf1–+) 11.Nf3 Qd8 12.0-0 (12.Bc4 Bf5 13.Ng3 Bg4–+) 12...Be7 (12...f5 13.Ng3 e4 14.Re1–+) 13.Bc4 Nd7 (13...f5 14.Nc3–+) 14.d4 Nb6 15.Bb3 Nd5 (15...Bg4 16.c3–+) 16.c4? (16.de5 Be6 17.ef6 Bf6 18.Nc5+=) 16...Ndf4 17.c5 Be6 (17...Bg4 18.de5 Ne5 19.Qd8 Rd8 20.Ne5 Ne2 21.Kh1 fe5 22.Rae1–+) 18.d5? (18.Be6 Ne6 19.de5 f5–+) 18...Bf5 (better is 18...Nd5 19.Nd6 Bd6 20.Bd5 Bd5 21.Qd5–+) 19.d6 (19.Ng3 Bd3 20.Rc1–+) 19...Be4 20.de7 Qd1 21.Rfd1 Bf3 22.gf3 Ne7 23.Ba4 0-0 (23...Ned5 24.Bb3 Nc3 25.Rd2–+) 24.Rd7 (24.Bb3 Kh8 25.Rd7–+) 24...Nfd5 (better is 24...Ned5 25.Bb3 Rfd8 26.Rc7 Rab8–+) 25.Bb3–/+ Rfd8 26.Rd8?? (better is 26.Re7 Kf8 27.Re6–+) 26...Rd8–+ 27.a4 Kf8 28.Rd1 Ke8 (28...Ke8 29.a5 c6–+) 0–1. Steingraeber,Barbara – Neffgen,Dieter, RSX4D – A00 – Sokolsky–1, 2002.

4.a4 d5 5.e3 Be7 6.Nf3 0-0 7.Be2 c5 8.0-0 Be6 9.c4 d4 10.ed4 ed4 11.d3 a5 12.Qc2 b6 13.Bd1 Kh8 14.h3 Bd6=+ 15.Kh1 Qd7 16.Bc1 Qc8 17.Bh6= gh6 18.Nh2 Rg8 19.Bf3 Ra7 20.Nd2 Rag7 21.Rg1 Bh3=+ 22.Ne4 Bh2–/+ 23.Nf6?? Bg1–+ 24.Ng8 Bf2 25.Nf6?? Qf5 26.Ne4 Be3 27.Qe2–+ Qf4 28.Rf1?? Bg2 29.Bg2 Qh4 30.Bh3 Qh3 31.Qh2 Qf1 (31...Qf1 32.Qg1 Qg1#) 0–1. BfreeToLose – BATTLEPHIL (1990), Live Game Caissa's Web, 2006.

4.c4 c6 5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 Nf7 (8...cb5 9.cb5 d5 10.d4=) 9.Nf3 Qb6 (9...cb5 10.cb5 d5 11.Be2=) 10.Nc3 d6 11.Be2 Be7 12.0-0 0-0 13.d4 Bg4 14.h3 Bh5 15.g4 Bg6 16.Nh4 Nd7 (16...Nh8 17.Ng6 Ng6 18.Bd3+=) 17.Ng6+/- hg6 18.Bd3 Nh8 (18...ed4 19.ed4 f5 20.gf5+/-) 19.Qc2 Kf7 (19...Ra8 20.Be4+/-) 20.de5 (20.Rb1 Qc7+/-) 20...Ne5 21.Be2 Ra8 22.f4 (22.Rb1!?+/-) 22...Qe3= 23.Kg2 Ra1 (better 23...Nd7!?=) 24.Ra1+/- Qf4 25.Rf1 (better 25.Ra8!? Qh6 26.Qa2+-) 25...Qd4 26.Ne4 Kg8 (26...Qe3 27.Rd1+=) 27.bc6+/- bc6 28.Ng3 d5 29.cd5 cd5 (29...Qd5 30.Ne4=) 30.Qc8 (30.Rd1 Qb6+/-) 30...Bf8 (30...Kh7 31.Rd1 Qe3 32.Rd5+=) 31.Qc2 (31.Rd1 Qf4+/-) 31...Nhf7 (better 31...Bc5=) 32.Rf2?? (better 32.Rd1 Qb6 33.Rd5+/-) 32...Ng5 33.h4 (33.Rf1 Ne6-/+) 33...Ne4 (better 33...Nh3! 34.Rf6 gf6 35.Kh3 Bc5-/+) 34.Ne4= Qe4 35.Qe4 de4 36.Kg3 (36.Rf4 e3=) 36...Bd6=+ 37.Kg2 Kf7 38.Rf1 (38.Rf4 e3=+) 38...Ke6-/+ 39.Ra1 (39.Ba6 Bc5=+) 39...f5 40.gf5 (40.Kf1 fg4 41.Ra4 Kf5-/+) 40...gf5 41.Ra6 (41.Ba6 Kf6-+) 41...g6 (41...f4 42.Bb5-+) 42.Kg3 (42.Bd1 Kd5-+) 42...Nd7 (42...Nf3 43.Rd6 Kd6 44.Bb5-+) 43.Kf2 Nc5 44.Rc6 (44.Bc4 Ke5 45.Rc6 Ne6-/+) 44...Kd5 45.Rc8 Ne6?? (45...Be7 46.Kg3-+) 46.Rg8?? (better 46.Bc4 Kd4 47.Be6+-) 46...Nf4 47.Rg6?? (better 47.Rd8-+) 47...Ng6 48.h5 Ne5 (48...Bc5 49.Ke1 Nf4 50.Bd1-+) 49.h6 Bf8 50.h7 Bg7 51.Bh5 (51.Kg3 Ng6 52.Bh5 f4 53.Kg4 f3-+) 51...Bh8 (better 51...f4 52.Bd1 Kd4-+) 52.Bg6 (52.Ke3 Nd3-+) 52...Ke6 (52...Ng6 53.Ke2 f4 54.Ke1 e3 55.Kd1 f3 56.Ke1 Bc3 57.Kd1 e2 58.Kc2 e1Q 59.Kb3 Qd2 60.Ka4 Qa2 61.Kb5 Qa5) 53.Bh5 Kf6 54.Be2 Kg5 (54...f4 55.Bd1-+) 55.Kg2 (55.Ke3 Nd7-+) 55...f4 56.Bc4 (56.Bd1-+) 56...f3 57.Kf2 Nc4 58.Kf1 (58.Kg3 Nd2 59.Kh3 f2 60.Kg3 f1Q 61.Kh2 Be5) 58...Nd6 (58...e3 59.Ke1 Bc3 60.Kf1 e2 61.Kf2 e1Q 62.Kf3 Qf1 63.Ke4 Qf5) 59.Ke1 Kg6 (59...e3 60.Kd1 e2 61.Kd2 Ne4 62.Kc2 e1Q 63.Kb3 Qa5 64.Kc2 Qc3 65.Kd1 Qd2) 60.Kf1 Kh7 (60...e3 61.Ke1 Bc3 62.Kd1 e2 63.Kc2 e1Q 64.h8N Bh8 65.Kb3 Qc3 66.Ka4 Qc4 67.Ka5 Qb5) 61.Kf2-+ Kg6 (61...Bd4 62.Kg3 f2 63.Kg2 Nc4 64.Kh3 f1Q 65.Kg3 Qf3 66.Kh2 Ne3 67.Kg1 Qg2) 62.Ke3 Kf5 63.Kf2 Ke5 64.Ke1 Kf4 65.Kf1 (65.Kd2 f2 66.Ke2 e3 67.Kf1 Ne4 68.Kg2 e2 69.Kh2 Be5 70.Kg2 f1Q 71.Kh2 Ke3) 65...Bd4 (65...e3 66.Ke1 Bc3 67.Kd1 e2 68.Kc1 e1Q 69.Kc2 Qd2 70.Kb3 Qb2 71.Ka4 Qb4) 66.Ke1 Kg3 Black plans f2 67.Kf1 (67.Kd2 f2 68.Kd1 f1Q 69.Kc2 e3 70.Kb3 Qc4 71.Ka3 Nb5) 67...Nf5 68.Ke1 f2 (68...Ne3 69.Kd2 f2 70.Ke2 f1Q 71.Kd2 Qd1) 69.Kf1 (69.Kd1 f1Q 70.Kd2 Qf2 71.Kc1 Ne3 72.Kb1 Qc2) 69...Ne3 70.Ke2 f1Q 71.Kd2 Qd1 0-1. ClayPigeons (1980) - Du_Verloren (1960), Rated Bullet game, lichess.org, 2019.

4.d4 ed4 5.Bd4 d6 6.c4 Be7 7.Nc3 Nd7 8.Nf3 0-0 9.e3 Nf5 10.Bd3 Nd4 11.Nd4 Nb6 12.0-0 Kh8 13.a4 a5 14.ba6! ba6? 15.a5+– Nd7 16.Be4 Rb8 17.Rb1?? Ne5?? 18.Rb8+– Qd7 19.Bf5 Qe8 20.Rc8 Qh5 21.Rf8 Bf8 22.f4 Qh6 23.Bh3 Nc4 24.Qb3 Ne3 25.Qb8 g6 26.Rf3 Nc4 27.Nd5 Qg7 28.Qc7 Qg8 29.Qc4 Bh6 30.Ne3 Bg7 31.Qg8 Kg8 32.Rg3 Kf7 33.f5 g5+– 34.Ng4 h5 35.Ne6 Bf8 36.Nf8 Kf8 37.Nf6 Kf7 38.Rg5 Kf6 39.Rg6 Ke5 40.Rd6! Kf4 41.f6 h4 42.g3! hg3 43.hg3 Kg3 44.f7 Kh4 45.f8Q Kg5 46.Qh6 1–0. iczker – mergicuiapa (1690), internet, 2011.

4.e3 c5 5.Be2 d5 6.Bh5 g6 7.Be2 Bd6 8.Nf3 0-0 9.0-0 Nd7 10.c4 d4 11.ed4= cd4 12.Ne1 b6 13.Nd3 Nc5 14.Nc5= bc5 15.a4 Bf5 16.d3 Rc8 17.Bf3 Kh8 18.a5 Rb8 19.a6 Be6 20.Bb7 f5 21.Nd2 Ng4 22.h3 Nf6 23.Nf3 Bc8 24.Bc6 Bd7 25.Bb7 Qb6 26.Ng5 h6= 27.Nf3 Bc8 28.Nh4 Kh7=+ 29.Bf3? Bd7?? 30.Bc1? Rbe8 31.Qd2 Ng8 32.Ng6? Kg6–+ 33.Qe2 Re7 34.Bh5 Kh7 35.Qd2 Rg7 36.Kh1 Be8 37.Bf3 Bg6 38.Bd5 Bf7 39.Bf3 Re8 40.Re1 Qc7 41.Qe2 Nf6 42.Qd2 f4 43.Be4 Kh8 44.f3? Bg6 45.Bg6 Rg6 46.Qe2 Rg3 47.Bf4? ef4 48.Qe8 Ne8 49.Re8 Rg8 50.Rae1 Qg7 51.g4 Kh7 52.R8e6 Bf8 53.Rc6 h5 54.Ree6 hg4 55.Rh6 Qh6 56.Rh6 Bh6 57.hg4 Re8 58.Kg1 Re2 59.Kf1 Rd2 60.Ke1 Rh2 61.Kf1 Ra2 (61...Ra2 62.Ke1 Bg5–+) 0–1. XXXtremis – MindBender, Caissa.com, 2004.

4.e3 Bc5 5.Qh5 Nf7 6.Ba3 Ba3 7.Na3 0-0 8.Be2 d5 9.Nf3 Be6 10.0-0 Qd7 11.Qh4 c5 12.c4 d4 13.ed4 cd4 14.d3 Qd6 15.Nd2?? Nd7 16.Nc2=+ f5 17.Bh5 Nh6 18.Nf3 Rad8 19.Qg3 f4 20.Qg5 Rf5?? 21.Qh4 Nf6 22.a4?? Rh5 23.Qf6 gf6 24.Na3 Kh8 25.Rfc1 Rg8 26.c5 Qf8 27.c6 bc6 28.Rc6 Bd5 29.Rc7 Qa3! 30.Ra3 Bf3 31.g3 fg3 32.fg3 Nf5 (33.Ra1 Ra8–+; better is 32...Rg3! 33.Kf2 Rgh3 34.Ra2 Rh2 35.Kf3 Ra2 36.Ke4 Ra4 37.Rc6 Rh4 38.Kd5–+) 0–1. stoker – COUNTDOWN2MATE3, Live Game Caissa's Web, 2004.

4.e3 d6 5.Nf3 (5.d4 ed4 6.ed4 Bf5=) 5...e4 (5...d5 6.Be2=) 6.Nd4 c5 (6...d5 7.c4 c6 8.bc6 bc6 9.cd5 cd5 10.Qb3+/–) 7.Nb3 (7.bc6 bc6 8.Nc3+=) 7...a6 (7...d5 8.Nc3 c4 9.Nd4+=) 8.a4 (8.Qh5 Nf7 9.Qd5 f5+/–) 8...ab5 (8...d5 9.Be2=) 9.ab5 (9.Bb5!? Nc6 10.Qh5 Nf7 11.Nc3+=) 9...Ra1= 10.Ba1 (10.Na1 d5=) 10...f5 (10...d5 11.Be2=) 11.Be2 (11.d4 Ng4+=) 11...Nd7 (11...Be6 12.d3+=) 12.Bh5 (better is 12.c4+=) 12...g6?? (better is 12...Nf7+=) 13.Bh8+– Qg5 (13...Nf7 14.Bb2 gh5 15.Qh5+–) 14.0-0 (14.Be2!? Qg2 15.Rf1 Qh2+–) 14...Nf7 (14...Qh5 15.Qh5 gh5 16.f3+–) 15.Bg6! hg6 (15...Qg6 16.Bc3 Combination; 15...hg6 16.Bc3 Combination) 16.f4?? (16.Bc3 Nde5+–) 16...Qh6?? (16...ef3 17.Rf3 Nh8 18.Nc3+=) 17.d3?? (17.Bb2 Qh5+–) 17...g5?? (better is 17...Qh8 18.c4 Nf6+=) 18.de4 (18.Bb2 d5+–) 18...gf4? (18...Qh8 19.ef5 gf4 20.ef4 Nh6+/–) 19.Rf4?? (19.Bb2 fe3 20.ef5 Be7+–) 19...Nde5? (19...Qh8!? 20.ef5 Bh6+=) 20.ef5 (better is 20.Be5 de5 21.Rf3 fe4 22.Rf2+–) 20...Qg5?? (better is 20...Qh8!? 21.Qe2 Bh6+/–) 21.Qd5 (21.Be5 de5 22.Rf3 c4+–) 21...Bf5? (21...Nh8 22.Nc5! Bf5 23.Nb7+–) 22.g3 (22.Be5 de5 23.Rf3 Be7+–) 22...Bh6?? (22...Nh8 23.Nc5! Nhg6 24.Nb7 Nf4 25.ef4+/–) 23.N1d2 (23.e4!? Bh3 24.Bf6 Qg8 25.Qb7 Qf8 26.Qb8 Kd7 27.Qf8 Bf8 28.Be5 Be6+–) 23...Qh5?! (23...Nh8 24.Qd6 Nd7 25.Nc5+–) 24.Be5 (24.Ne4 Be4 25.Re4 Ng5 26.Be5 Ne4 27.Qe4 de5+–) 24...de5 25.g4 (better is 25.Rf3 Bg4 26.Rf1 (26.Qb7?! Bf3 27.Qf3 Qf3 28.Nf3 e4+–) 26...Be3 27.Kh1+–) 25...Bg4 (25...Qg6 26.Ra4 Be3 27.Kf1 Bg4 28.Ra8 Ke7 29.Qb7 Bd7+–) 26.Re4 (26.Ne4 Bg5 27.Qf7 Qf7 28.Rf7 (28.Ng5 Qg6 29.Rg4 Qc2–+) 28...Be3 29.Rf2+–) 26...Bh3 (26...Bh3 27.Kf2 Bg4 28.Rg4 Qg4 29.Qb7 Qh4 30.Ke2 Qh2 31.Kd3 Qh3 32.Qc6 Kd8 33.Qf6 Ke8+–). DEFFM – ssarrinn, freechess.org, 2016.

4.e3 Bd6 5.c4 0-0 6.Nc3 c6 7.bc6 dc6=+ 8.Ne4 Be7 9.Nf3 Bg4 10.Be2 f5 11.Ng3 Bf3 12.Bf3 Bf6 (12...e4 13.Be2=) 13.Be2 f4 (13...e4 14.Rb1=) 14.ef4 (14.Ne4!?+=) 14...ef4=+ 15.Bf6 Qf6 16.Ne4 Qg6 (16...Qd4 17.Qb1 Re8 18.d3=+) 17.Bf3= Nf5 18.0-0 Nd4 19.d3 (19.Nc5 Qf7=+) 19...Nf3 (19...Nd7!?=+) 20.Qf3= Nd7 21.Rab1 (21.d4 Rae8 22.Rfe1 Re6=) 21...b6 (21...Ne5 22.Qh3 b6 23.d4 Nc4 24.Qb3 Qe4 25.Qc4 Qd5 26.Qd5 cd5 27.Rb5-/+) 22.a4? (22.d4 c5 23.Nd2 cd4 24.Qd5 Qf7 25.Qd4 Rad8=+) 22...c5 (22...Ne5 23.Qh3-+) 23.Rfd1 (better 23.Nc3!?=+) 23...Rad8 24.Nc3 Ne5 25.Qe4 Qf6 (better 25...Qe4!? 26.de4 Nc4-/+) 26.Nd5= Qe6 (26...Qg5 27.h4 Qh5 28.a5=) 27.Nf4?? (better 27.Re1 Rfe8 28.Nc7+-) 27...Qf6=+ 28.Rd2?? (better 28.Re1 Qf4 29.Qf4 Rf4 30.Re5 Rd3 31.Re7=+) 28...Qf4-+ 29.Qf4 (29.Rbd1 Qf6 30.Qe1 Rd4-+) 29...Rf4 30.Re1 (30.Re2 Nd3 31.Re7 Ra8-+) 30...Nc4! 31.Rde2 (31.dc4 Exploits the pin 31...Rd2) 31...Nd6 (31...Rd3 32.g3 Rf8 33.Re7-+) 32.Re7 (32.a5 ba5 33.Kf1 Rd4-+) 32...Ra4 33.Rc7 h6 34.g3 Nf5 35.g4 (35.Re5 Rf8 36.Kg2 Ra2-+) 35...Nd4 (better 35...Rg4 36.Kf1 Rd3 37.Ra7 Rh3-+) 36.Ree7 Ra1 37.Kg2 Ne6 (better 37...Kh8 38.Rg7 Ne6 39.Ra7 Rd3 40.Rh7 Kg8 41.Rhg7 Ng7 42.Ra1 Ne6-+) 38.Re6=+ Ra4 (better 38...Kh7=+) 39.Ree7?? (better 39.Rg6=) 39...Rg4-+ 40.Kf3 Rg6 41.Ke4 (41.Ke3 a5-+) 41...Rd4 (41...a5 42.Ke3-+) 42.Ke3 Rh4 43.Ra7 Rh2 44.Ra8 (44.f3 Rh1-+) 44...Kh7 45.Ra1 Rh3 46.Ke2 Rf6 (46...h5 47.Rd1-+) 47.Rf1? (47.Rg1 Kg8 48.Rgg7 Kf8=) 47...Rh5 (47...Rh2 48.Ke3 Kg8 49.f4-+) 48.Rb7? (better 48.Rg1 Rg5 49.Rg5 hg5 50.Rd7-+) 48...Re5 (48...Rh2 49.Ke3 Re6 50.Kf3-+) 49.Kd2 Rd6 (better 49...Rg5!? 50.f4 Rg3 51.f5-+) 50.Rg1 The mate threat is Rbxg7 50...Rg6 51.Rf1 (better 51.Rg6 Kg6 52.Rb6 Kf5 53.Rb8-+) 51...Rd5 52.Re7 (52.Kc2 Rf5-+) 52...c4 53.Re3 (53.d4 Rd4 54.Kc3 Rf4-+) 53...cd3 (better 53...Rgd6 54.Kc3 cd3 55.Kd2-+) 54.Rd3 Ra5 55.Rb3 (55.f4 Rf6-+) 55...Rf6 56.Kc2 (56.Rfb1 Rd5 57.Ke2 Re5 58.Kf1 Ree6-+) 56...Ra2 57.Rb2 Ra6 (57...Rb2 58.Kb2 h5 59.f3-+) 58.Rb5 Ra2?? (58...g5 59.Rb4-+) 59.Rb2 Rc6 (59...Rb2 60.Kb2 g5 61.Kc3-+) 60.Kb1 Ra5 (60...Rb2 61.Kb2 Rf6 62.f4-+) 61.Rc2 Rb5 62.Kc1 Rc2 63.Kc2 Rf5 (63...Rf5 64.f4 g5-+) 0-1. aravind555 (1775) - Latoile66 (1770), lichess.org, 2020.

4.e4 a6 5.Nc3 ab5 6.Bb5 c6 7.Bc4 Nf7 8.Nf3 Be7 (8...b5 9.Bf7 Kf7 10.a4=+) 9.0-0 (9.d4 ed4 10.Nd4 b5 11.Bf7 Kf7+=) 9...d6 10.d4 Bg4 (10...b5!? 11.Bb3 b4=) 11.Bf7+/– Kf7 12.de5 Bf3 (12...Qb6 13.Rb1 Qc5+/–) 13.Qf3 (13.e6 Ke6 14.Qf3 Qa5+/–) 13...de5+= 14.Ne2 (14.Rfd1 Qc7 15.Qh5 g6 16.Qh4+=) 14...Qd2 (14...Qc7!?+=) 15.Qb3+/– Kg6 16.Qb7 Na6 17.Ng3 (better is 17.Nd4 Qb4 18.Qb4 Nb4 19.a3 ed4 20.ab4+=) 17...Qc2?? (better is 17...Qb4 18.Qd7 Qb2 19.Qe7 Qc2+/–) 18.Nf5 (< 18.Qe7 Qb2 19.Nf5 Rhg8+–) 18...Rab8 (18...Rae8+–) 19.Ne7 (19.Qa6?! Bf8 20.Bc1 Qe4+–) 19...Kh5 (19...Kf7 20.Qa6 Rb2 21.Nc6 Qe4+–) 20.Qd7 Qb2 (20...Rb2 21.Qh3 Kg5+–) 21.Qh3 Kg5 22.g3 1–0. Wall,Bill – Locket, Internet, 2003.

4.e4 c6 5.a4 (5.d4 ed4 6.Bd4 d5 7.Qh5 g6=) 5...a6 (5...d5 6.bc6 bc6 7.ed5 cd5 8.d4 Qa5 9.Bc3=) 6.c4 ab5 7.ab5 Ra1 8.Ba1 Qa5 (8...cb5 9.cb5 d5 10.ed5 Qd5 11.Nc3=) 9.Nc3 Bb4 10.Be2 0-0 11.Nf3 d6 12.0-0 Nd7 (12...f5 13.Qb3=) 13.Bb2 (13.Qc2 Bc5=) 13...Nc5 (13...f5 14.Qc2=) 14.Qc2 Bg4 15.Ra1 Qc7 16.h3 (16.Na2 Ba5=) 16...Bf3 17.Bf3 (worse is 17.gf3 Ne6+=) 17...Ne6 18.Na2 (18.Qb3 Bc3 19.Qc3 Nd4=) 18...Bc5+= 19.bc6 bc6 20.Nc1 Rb8 21.Nd3 Bd4 22.Bc3 g6 (22...Qb6 23.Qa2 Bc3 24.dc3=) 23.g3 (23.Ra4 Bc3 24.dc3 Ng5=) 23...Kg7 (23...f5 24.Bg2+=) 24.Kf1 (24.Bg2 Bc3 25.dc3 Nf7=) 24...Nf7 25.Bg2 h5 (25...Qd7 26.f4+=) 26.f3 (26.f4 Bc3 27.dc3 Nh6=) 26...g5 (26...Bc3 27.Qc3 Nd4 28.Nb4+=) 27.Ra2 (27.f4 Bc3 28.Qc3 gf4 29.gf4 ef4+=) 27...c5 (27...Bc3 28.dc3 Rh8 29.c5+=) 28.Ke2 Kh6 (28...Bc3 29.dc3 (worse is 29.Qc3 Rb3 30.Qc1 Nd4 31.Ke3 d5–/+) 29...Qc6 30.Qd2=) 29.Rb2 (29.Ba5 Qb7=) 29...Nfd8 (better is 29...Bc3 30.Qc3 Rb2 31.Qb2 Nd4 32.Kf2 Kg7=) 30.Rb3?? (30.Ke1 Bc3 31.Qc3 Rb2 32.Qb2 Kg7=) 30...Nc6?? (30...Bc3 31.dc3 Nc6 32.Rb8 Ned4 (32...Qb8?! 33.Kf1=; 32...Nb8?! 33.Kd1=) 33.cd4 Nd4 34.Kd2 Nc2 35.Rh8 Kg7–+) 31.Qb1 (31.Rb8 Qb8 32.Qa4 Bc3 33.dc3 Qe8=) 31...Rb3 32.Qb3 Qa7 (better is 32...h4 33.gh4 gh4+=) 33.Qb5?? (better is 33.Kf1=) 33...Bc3–+ 34.dc3 (34.Qb1 Qa1 35.Qe1 Ncd4 36.Kf1 Qe1 37.Ke1–+) 34...Ncd4! 35.Kd2 (35.cd4 Nd4 Theme: Double Attack) 35...Nb5 (35...Nb5 36.cb5 Qa2 37.Kc1 Qg2–+) 0–1. Sudhop,Horst (1745) – Mueller,Falk (1995), 12sen.LSEM Ruhrgebiet op, 2005.

4.e4 d5 5.ed5 Qd5 6.Nc3 =.

4.e4 Be7 5.d4 ed4 6.Bd4+= 0-0 7.Nf3 Kh8 8.Bd3 d6 9.0-0 Bg4 10.Nbd2 Nd7+= 11.h3 Bh5 12.Nh4?? (better is 12.Be3+/–). wood – BATTLEPHIL, Live Game Caissa's Web, 2005.

4.e4 Nf7 5.c4 Bc5 6.Nf3 d6 7.d4 Bb4 8.Nbd2 Bg4 9.Be2 Bf3 10.Bf3 Ng5 11.0-0 Bd2 12.Qd2 Nf3 13.gf3 Nd7 14.Kh1 (14.f4 Nb6 15.Rfc1 Qd7 16.fe5 de5=) 14...Nb6 15.Qe2 Qc8 (15...Na4 16.f4 Nb2 17.Qb2 ef4 18.Qa3+=) 16.de5 fe5 17.c5 Nd7 (17...Na4!?=) 18.cd6+= cd6 19.Rac1 Nc5 (better is 19...Qd8+=) 20.Qc4 (20.f4 ef4 21.Qh5 Kf8 22.Rg1+–) 20...Qe6 (20...Qh3 21.Qe2 Ne6 22.Rg1+=) 21.Qe6 Ne6 22.Rfd1 Rd8 23.Ba3 Nd4 24.Rc7 (24.Bb2 Nf3 25.Rc7 Ng5=) 24...0-0 (24...Nb5 25.Rb7 Na3–/+) 25.Rb7+= Rf3 26.Kg2?? (26.Bb2!? Rf2 27.Bd4 ed4 28.Ra7=) 26...Rdf8 (26...Ra3 27.Rd2–+) 27.Rf1?? (better is 27.Bd6 Rf2 28.Kg1 Ra2 29.Bf8 Nf3 30.Kf1 Nh2 31.Kg1 Nf3 32.Kf1 Nh2 33.Ke1 Nf3 34.Kf1 Nh2=) 27...h6 (better is 27...Ra3 28.b6 ab6 29.Rb6 Rf4–+) 28.Bd6+– R8f7 29.Rb8 (29.Rf7!? Rf7 30.Be5 Nb5+–) 29...Kh7+/– 30.Be5 Ne6 (better is 30...Nc2!? 31.Kh1 Ne3+/–) 31.Bg3 Ng5 (31...Ra3 32.Ra1 Nf4 33.Kf1 Nh5+–) 32.Rc1?? (better is 32.Re1+–) 32...Ne4+/– 33.Rcc8 (better is 33.Rc2!?+/–) 33...Ng3= 34.hg3 (34.fg3!? Rf2 35.Kh3=) 34...Rf2+= 35.Kh3 Ra2 36.Rh8 Kg6 37.Rhc8 Rff2 38.Rc4 (38.Rc6 Kg5 39.Rc5 Rf5+=) 38...Rh2 39.Kg4 h5 40.Kf4 h4 (40...Rhf2!? 41.Ke4 Rae2 42.Kd4 Rf7–/+) 41.Rc6= Kh7 42.gh4 (42.Rcc8!? Kg6 43.Rc6 Kh7 44.Rcc8=) 42...Ra4 43.Ke5 Rhh4 44.Kd6 Rh6 45.Kc7 Rc6?? (better is 45...Rh5 46.Ra6 Rf4–/+) 46.bc6+– Ra1 47.Rb5 a5? (47...a6 48.Rc5 Rb1+–) 48.Kb6 a4 (48...Re1 49.c7 Re6 50.Kb7 Re7+–) 49.c7 Rc1 50.Kb7 (better is 50.Rc5 Rc5 51.Kc5+–) 50...a3 51.c8Q Rc8 52.Kc8 Kh6 (52...a2 53.Rh5 Kg6 54.Ra5+–) 53.Ra5 (better is 53.Kd7 a2 54.Ra5 a1Q 55.Ra1 Kg5+–) 53...g5 (53...Kg6 54.Kd7 (worse is 54.Ra3 Kf5+–) 54...Kf6 55.Ra3+–) 54.Ra3 (54.Kd7 g4+–) 54...Kh5 (54...Kg6 55.Ra5 Kf6 56.Kc7+–) 55.Rg3 (better is 55.Kd7+–) 55...Kh4 56.Rg1 g4 57.Kd7 Kh3?? (better is 57...g3=) 58.Ra1 (better is 58.Rh1 Kg2 59.Rh6+–) 58...g3= 59.Ra3 Kh2 60.Ke6 g2 61.Ra2 Kh1 62.Rf2?? (better is 62.Rg2! Kg2=) 62...g1Q–+ (62...g1Q 63.Rf6 Qe3 64.Kd5 Kg2–+) 0–1. GuestJNVY – GuestNHLP, freechess.org, 2017.

5.e3 c6 6.Nf3 d5 7.d4 e4 8.Nfd2 Bd6 9.a4 0-0 10.Nc3 Be6 11.Qb3 Bc7 12.Be2 Re8 13.g3 (better 13.bc6!? bc6 14.Qb7+/-) 13...Nd7 14.0-0 Bh3 (14...dc4 15.Bc4 Bc4 16.Nc4=) 15.Rfd1 (better 15.Rfc1 Be6 16.cd5 cd5 17.Rc2=) 15...Nb6 (15...Be6!?=) 16.a5 (16.cd5 Nd5 17.Nde4 Nc3 18.Nc3 Be6+/-) 16...Nc4 (16...dc4 17.Qa2 Nd5 18.Bc4+/- (18.Qc4?! Nd6 19.Qb3 Be6=)) 17.Nc4 dc4 18.Bc4 (18.Qc4?! Ba5 19.bc6 bc6=) 18...Qd7 (better 18...Qe7+/-) 19.bc6 (better 19.a6 Reb8 20.Ne4+-) 19...bc6+= 20.d5 Qf5 21.dc6 Qf3 22.Bf1 (22.Bf7?? Kh8 23.Be8 Qg2) 22...Bf1 (22...Rab8 23.Qa2 Bf1 24.Rf1+=) 23.Rf1 Rab8 24.Qc2 (24.Qa2 Re5+=) 24...Ng5 25.h4 Bg3 26.fg3 (26.hg5 Bh2 27.Kh2 Qh5 28.Kg2 Qg5 29.Kh3 Qh5 30.Kg2 Qg4 31.Kh2 Re5 32.Qb3 Rb3 33.Ne4 Rh5) 26...Qg3=+ 27.Qg2 Nf3 28.Kh1?? (better 28.Rf3 Qg2 29.Kg2 ef3 30.Kf3 Rb2 31.c7-/+) 28...Qh4 29.Qh3 Qh3 (29...Rb2 30.Rf3 Qh3 31.Rh3+/-). ClayPigeons (2125) - Bilto (2135), Rated Bullet game, lichess.org, 2020.

5.e3 d5 6.Nf3 c6 (6...dc4 7.Bc4 Nd6 8.Be2=) 7.d4 e4 8.Nfd2 Be7 (8...Be6 9.cd5 cd5 10.Nc3=) 9.Qb3 (9.Nc3 Be6+=) 9...Be6 (9...dc4 10.Bc4 Nd6 11.Nc3+=) 10.Nc3 0-0 11.cd5 cd5 (11...Bd5!? 12.Bc4 Bc4 13.Nc4 f5+=) 12.Nde4! Qd7 (12...de4 13.Qe6 Pinning (13.Qe6 Deflection)) 13.Nd2 Ng5 14.Bd3 Ne4 (14...f5 15.Ba3+/-) 15.Rc1 (15.Nce4!? de4 16.Bc4 Bc4 17.Qc4 Kh8 18.Ne4 Rc8+-) 15...Nd2+/- 16.Kd2 a6 17.a4 (17.Ba3 ab5 18.Be7 Qe7+/-) 17...ab5 18.Nb5 (18.ab5 f5+/-) 18...Nc6+= 19.Ke2 f5 20.f3 (20.Kf3 Na5 21.Qc2 Nc4+=) 20...f4 21.e4 de4 (better 21...Kh8 22.Qd1 de4 23.Be4 Bd5+=) 22.fe4?? (better 22.Qe6 Qe6 23.Bc4+=) 22...Ra5 (better 22...Bb3 23.h3 Ra4-+) 23.d5 (better 23.Qe6 Qe6 24.Bc4+-) 23...Nb4?? (better 23...Bf7 24.Kf1 Qg4+/-) 24.de6 Qd3 (24...Qe8 25.Bc4 Qg6 26.Kf1+-) 25.Qd3 Nd3 26.Kd3 Ra4 27.Rc7 Bf6 (27...Rb4 28.Bd4 Rb5 29.Re7 Rg5+-) 28.Bf6 Rf6 29.e7 Re6 30.Rhc1 (better 30.Rc8 Kf7 31.e8Q Re8 32.Nd6 Ke7 33.Ne8 g5+-) 30...Kf7 31.Nd4 (31.e8Q Ke8 32.Rb7 Kf8 33.Rc8 Re8 34.Re8 Ke8 35.Rg7 Kf8 36.Rh7 Ra2+-) 31...Rd4 (31...Ra3 32.R1c3 Rc3 33.Kc3 Re7 34.Re7 Ke7+-) 32.Kd4 Re7 (32...b5 33.e8Q! Ke8 34.Rg7+-) 33.Re7 Ke7 34.Rc7 Kf6 35.Rb7 f3 (35...Kg6 36.e5 h6 37.Kd5+-) 36.Rb5 (better 36.e5 Kf5 37.gf3 g5+-) 36...fg2 37.Rb1 g5 38.Rg1 h5 (38...Ke7 39.Rg2 h6 40.Rg3+-) 39.Rg2 g4 40.Ke3 Kg5 41.Rg1 h4 42.Rg2 h3 (42...g3 43.hg3 hg3 44.Rg3 Kf6 45.Kd4+-) 43.Rg1 Kh4 (43...Kf6 44.Rg4 Ke6 45.Rg6 Kf7 46.Rh6+-) 44.Rg3 (44.Kf4 g3 45.Rg3 Kh5 46.e5 Kh6 47.e6 Kh5 48.e7 Kh4 49.e8R Kh5 50.Rh8) 44...Kg5+- 45.e5 Kh4 Black threatens to counter with Ke4 46.e6 (46.Kf4 Kh5 47.Rg4 Kh6 48.e6 Kh5 49.e7 Kh6 50.e8Q Kh7 51.Qh5) 46…Kg5 (46...Kg5 47.e7 Kh5 48.e8Q Kg5 49.Qe5 Kh4 50.Qf4 Kh5 51.Qg4 Kh6 52.Qh3; 46...Kh5 47.e7 Kg6 48.e8Q Kg5 49.Qe5 Kh4 50.Qf4 Kh5 51.Qg4 Kh6 52.Qh3) 0-1. ClayPigeons (2060) - jalil1953 (2080), Rated Bullet game, lichess.org, 2020.

5.Qh5 Nf7 6.Bc4 d5 7.Bd3 e4 8.Be2 0-0 9.Nc3 c6 10.Nh3? (10.bc6 bc6 11.Rb1 g6–+) 10...Nd7?? (better is 10...g6 11.Qh4 f5–+) 11.Nf4 Nh6?? (better is 11...Nde5 12.bc6 bc6=+) 12.bc6 bc6 13.Ncd5! Bd6 14.Nf6?? Nf6–+ 15.Bf6 Rf6 16.Bc4 Kh8 17.0-0 Rf5 18.Qh3?? Rf4! 19.Qg3 Rg4 20.Qg4 Bg4 21.d3 Qh4 22.g3 Qh3 23.f3 Bf3 24.Rf3 ef3 (25.Kf2 Qg2 26.Ke1 Qe2) 0–1. stoker – 2deep, Live Game Caissa's Web, 2004.

5.Qh5 Kf8 6.f4 d6 7.Bc4 Bg4 8.Qh4 Nd7 9.h3 Nb6 10.Bd3 Bf5 11.Nf3?? Bd3?? 12.cd3= Qe8 13.0-0 Nf5 14.Qg4=+ Qg6 15.fe5 Qg4 16.hg4 Nh6 17.ef6 Bf6 18.Bf6 gf6 19.g5 fg5 20.Ng5 Ke7 21.Nc3 Raf8 22.Rf8+– Rf8 23.Rf1 Rf1 24.Kf1 Kf6 25.Nge4 Ke5 26.Ke2 d5? 27.Ng5 Nd7 28.Nh7 c6 29.a4?? Nf7? 30.Kf3?? Kf5= 31.e4 Kg6 32.ed5 c5 33.Ne4 Kh7 34.Kf4 Kg6 35.g4 b6 36.Ke3 Nfe5 37.Kf4 Nd3 38.Ke3 Nb2 39.Nc3 Ne5 40.d4? Ng4 41.Ke4 Nf6 42.Ke5 Nc4 43.Ke6 Ne8?? 44.dc5–/+ bc5 45.Ne4 Nc7 46.Kd7 Nd5 47.Nc5 Nb2 48.a5 Nc4 49.b6 ab6 50.ab6 Ncb6 51.Kc6 Kf5 52.Nd7 Ne7 53.Kb6 Ke6 54.Nc5 Kd5 55.Nb3 Ng6 0–1. elsh1403 – vallaskyn (1745), internet, 2011.

4.a3 (--> 3.a3 a5 4.c3).

4.Qa4 Nh6 5.Nf3 c5 6.Qa3 e4–/+ 7.Ng1 cb4 8.Qb3 d5 9.e3 Nc6 10.Bb5 Be6 11.Ne2 Nf5 12.Nf4 Bf7 13.Qa4 Rc8 14.a3 ba3 15.Ba3 Ba3 16.Na3 Nd6 17.Nc2 Nb5 18.Qb5 Qd7 19.h4 Ra8 20.Rb1 Ra7 21.h5 0-0 22.Nd4 Rd8 23.Qc5 Rda8 24.h6 g5 25.Nh5 Bh5–+ 26.Rh5 Ne5 27.Kf1 Nc4 28.Ke1 b6 29.Qc6 Qc6 30.Nc6 Rc7 31.Nd4 Kf7 32.Rb5 Rd7 33.Rb1 a4 34.Ra1 Kg6 35.Rh1 a3 36.Ra2 g4 37.Ne6 f5 38.Nf4 Kg5 39.Ke2 Ra5 40.d3 Ne5 41.d4 Nc4 42.Rh5 Kf6 43.Ke1 Rc7 44.g3 Rc8 45.Kd1 Rca8 46.Ke2 Nd6 47.Rh1 Rc8 48.Rb1 Rc6 49.Rc1 Kg5 50.Ne6 Kh6 51.Nd8 Rc4 52.Ne6 Nf7 53.Kd2 Kg6 54.Nf4 Kg5 55.Rca1 Rca4 56.Rb1 Nd6 57.Rh1 Kf6 58.Rh7 Nf7 59.Rh1 Ke7 60.Rh5 Nd6 61.Ng6 Ke6 62.Ne5 Ne8 63.Ng6 Rb5 64.Nf4 Kf6 65.Kd1 Ra8 66.Kc1 Ra6 67.Rh7 Ng7 68.Rh6 Kf7 69.Rd6 Raa5–+ 70.Rd7 Kf6 71.Rc7 Ne8 72.Rd7 Rb3 73.Kc2 Rab5–/+ 74.Nd5 Ke6 75.Rd8 Rb2 76.Rb2 Rb2 77.Kc1 b5 78.Nf4 Kf7 79.d5? Rf2–+ 80.Kb1 a2 81.Ka1 Rc2 82.d6 Rd2 83.Ra8? Nd6 84.Ra2 Rd1 85.Kb2 Nc4 86.Kb3 Ne3 87.Ra7 Kf6 88.Ra6 Ke7 89.Ra7 Rd7 90.Ng6 Ke8 91.Ra1 Rd2 92.Nf4 Nd5 93.Ra8 Kd7 94.Ra7 Kc6 95.Ra6 Nb6 96.Ra1? Nc4 97.Ra2 Ra2 98.Ka2 Kd6 99.Kb3 Ne3 100.Ne2 Kc5 101.Nf4 Nf1 102.Ne2 Nd2 103.Kc2 Nf3 104.Kb3 e3 105.Kb2 Kc4 106.Kc2 Nd2 107.Nd4 Ne4 108.Nf5 e2 109.Ne3 Kc5 110.Ng2 0–1. Comet B25 – Doctor? 3.0, 2004.

4.Qb3 ab4 5.cb4 Nc6 6.a3 Nge7 7.e3 b6 8.Be2 g6 9.Nh3 d5=+ 10.Nc3 Be6 11.Qc2 Bf5 12.d3 d4 13.ed4 Nd4–/+ 14.Qd2? Bh3 15.gh3 Nb3 16.Qd1 Na1 17.Qa1 Nd5 18.Nd5 Qd5 19.f3 Bb4! 20.Kf2 Bc5 21.Kg2 0-0 22.Qc1 Ra4 23.Rd1 Rfa8 24.Qh6 Ba3 25.Bc1 Bf8 26.Qe3 g5 27.Qd2 Ra2 28.Qe1 Bb4! 29.Bd2 Rd2 30.Rd2 Ra2 31.Ra2 Be1 32.Ra1 Ba5 33.Rf1 Qd4 34.Kg3 Qe3 35.Bd1 Be1 36.Kg2 Qd2 37.Kh1 Qd1 38.Re1 Qe1 39.Kg2 Kf7 40.h4 gh4 41.d4 Qe2 42.Kh3 h5 43.de5 Qf3 44.Kh4 Qg4 0–1. SubZero – Caissa, Live Game Caissa's Web, 2004.

4.d4 ab4 5.Bc1 bc3 6.Nc3 Bb4 7.f3?? Bc3–+ 8.Bd2 Ba1 9.Qa1 ed4 10.Bf4 c5 11.g4 Qa5 12.Bd2 Qa2 13.Qa2 Ra2 14.Bc1 d5 15.h4 Ra1 16.Bg2 Rc1 17.Kd2 Ra1 18.e4 Ra2 19.Kd1 Rg2 20.Ne2 de4 21.Kc2 ef3 22.Rc1 fe2 23.Kb1 d3 24.Ka1 d2 25.Rb1 d1Q 26.Rd1 ed1Q# 0–1. sie – Caissa, Live Game Caissa's Web, 2004.

5.b5 Bb7 6.f4 Bd6 7.Ba3 Ba3 8.Na3 Ne7 9.fe5 fe5 10.Qg4 0-0 11.Qg5 Rf5 12.Qh4 Rf4 13.Qh3 Ng6 14.d3?? Qf8–+ 15.Nf3 Qa3 16.c4 Qc3 17.Kf2 Qa1 18.g3 Qd4 19.Kg2 Bf3 20.ef3 Qb2 21.Kg1 Rf3 22.Qg2 Qd4 23.Qf2 Qf2# 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

5.e3 Bb7 6.b5 Ne7 7.d4 ed4 8.cd4 Nf5 9.h4 Bb4 10.Bc3 Qe7 11.Bb4 Qb4 12.Qb4= ab4 13.a3 ba3 14.Ra3 Ra3 15.Na3 Ke7 16.Rh3 Re8 17.g4 Nd6 18.g5 Ne4 19.gf6 Nf6 20.f3 d5 21.Rg3 g6 22.Bg2 Kd8 23.Kd2 Nbd7 24.Nh3 Nh5 25.Rg5 Ng7 26.Nf4 Nf5 27.Nc2 Nh4=+ 28.Bh1 h6 29.Rg4 g5 30.Ng2? Nf3–+ 31.Kd3 Nfe5! 32.de5 Ne5 33.Kd4 Ng4 34.Nb4 Re4 35.Kc3 Rc4 36.Kb3 Rc1 37.Ne1 Re1 38.Bd5 Bd5 39.Nd5 Ne3 40.Ne3 Re3 41.Kc2 g4 42.Kd2 Re7 43.Kd3 g3 44.Kd4 g2 45.Kd3 g1Q 46.Kc4 Qe3 47.Kb4 Re4 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

5.Qc1 d5 6.Ba3 Ba3 7.Na3 Ne7 8.c4 d4 9.e3 0-0 10.Rb1 Nbc6 11.Rb5 Ra7 12.g3 Bf5 13.Qb2 de3 14.de3 Qa8 15.Rb3 b5! 16.cb5 Na5 17.Rc3?? Qh1 18.Ne2 Bh3 19.b6 Qf1 20.Kd2 Rd8 21.Rd3 Rd3 22.Kd3 Qd1 23.Qd2 Bf5 24.e4 Be4! 25.Ke3 Nf5 26.Ke4 Qd2 27.ba7 Qe2 28.Kf5 Kf7 29.a8Q g6# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

5.Qc1 d5 6.Ba3 Ba3 7.Na3 Ne7 8.c4 d4 9.e3 0-0 10.Rb1 Nbc6 11.Rb5 Ra7 12.g3 Bf5 13.Bh3 Bd3 14.Qb2 Qd6 15.Nc2?? Bc4–+ 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

5.Qa4 Nd7 6.Ba3 Ba3 7.Qa3 Ne7 8.g4 0-0 9.d4 Nb6 10.e3 Bg4 11.Nd2 c6 12.bc6 Nc6 13.h3 Bf5 14.f4 ef4 15.ef4 Re8 16.Kd1? Qc7 17.Ne2 g6 18.Bg2 Bc2!! 19.Kc2 Re2 20.Bd5 Nd5 21.Rae1 Ncb4 22.Kd1 Nc3 23.Qc3 Qc3 24.Ke2 Re8 25.Kf1 Qd3 26.Kf2 Qd2 27.Kg3 Re1 28.Re1 Qe1 29.Kf3 Na2 30.d5 Nc3 31.d6 Qe2 32.Kg3 Ne4 33.Kh4 Qh5# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

5.Qa4 Nd7 6.d4 Nb6 7.Qc2 Nc4 8.e3 Nb2 9.Qb2 Bf5 10.Nd2 Qd6 11.h3 Qa3 12.Qa3 Ba3 13.Nb3 Bb2–+ 14.Rd1 Bc2 15.Rc1?? Bb3 16.Rb1 Bc3 17.Ke2 Ba2 18.Rc1 Bb4 19.Rc7 Bc4 20.Kd1 Bf1 21.Rb7 Bg2 22.Rh2 Bf1 23.Rg7 Bb5 24.Rhg2 Nh6 25.de5 fe5 26.R2g5 Nf7 27.Rg8 Rg8 28.Rg8 Bf8 29.f4 ef4 30.ef4 a4 31.Ne2 a3 32.Nc3 a2 33.Na2 Ra2 34.Rg3 d4 35.f5 Ne5 36.f6 Nd3 37.h4 Ba4 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

5.d4 Bg4 6.h3 Bh5 7.g4 Bf7 8.Nf3 h5 9.Bg2 hg4 10.hg4 Rh1 11.Bh1 e4 12.Nfd2 Qd7 13.f3 Qb5 14.Qb3 Qb3 15.ab3 ef3 16.Bf3 Nc6 17.Ba3 0-0-0 18.Bf8 Rf8 19.e4 Re8 20.Kf2 Nge7 21.Na3 de4 22.Be4 Bd5 23.Re1 Rh8 24.Kg3 b6 25.Nf3? Bb3–+ 26.g5 f5 27.Bc2 a4 28.Bd1 Nd5 29.c4 f4 30.Kf2 Ne3 31.Bb3 ab3 32.Nb1?! Na5 33.c5 bc5 34.dc5 b2 35.Ke2 Nb3 36.c6 Rd8 37.Nbd2 Nc1 38.Kf2 Nd3 39.Ke2 Ne1 40.Ne1 Rd2! 41.Kd2 b1Q 42.Ke2 Qd1 43.Kf2 g6 44.Ng2 Ng4 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

5.e3 Be6 6.Nf3 Nd7 7.Be2 Bd6 8.d3 Ne7 9.c4 0-0 10.0-0 c6 11.bc6 bc6 12.Qc2 Rb8 13.Nbd2 h6 14.Rab1 Kh8 15.Rfc1 Bg4 16.Nd4 Be2 17.Ne2 Re8 18.Bc3 Qc7 19.Nf3 Qa7 20.Qd2 Rb1 21.Rb1 Nc5 22.cd5 cd5 23.Qc2 Rc8 24.Qd2 Qa6 25.Ne1 Nc6 26.Rc1 Nb4 27.Bb4 ab4 28.Qb4 Qa2 29.Qg4 Rg8 30.Ng3 Qa3 31.Rd1 Na4 32.Rb1 Qa2 33.Rc1 Qd2 34.Rd1 Qb4 35.Qe6 Nc3 36.Rd2 Qb1 37.Kf1 Ra8 38.Rc2 Ra1 39.Qc8 Bf8 40.Qc3 d4 41.ed4 ed4 42.Qa1 Qa1 43.Rc8 Kg8 44.Ne2 Qb2 45.Rc4 Bb4 46.Nd4 Qb1 47.Ndc2 Bd6 48.Ke2 Kf7 49.Nf3 Qb5 50.Rd4 Qb7 51.Ne3 Qb2 52.Kf1 Qb1 53.Ke2 Qa2 54.Kf1 Qa1 55.Ke2 Qa3 56.Nc4 Qa2 57.Ncd2 Be7 58.Rc4 g6 59.Nd4 Bd6 60.g3 f5 61.f4 Qa5 62.N2f3 Kg7 63.Nc6 Qa2 64.Ke3 Qa8 65.Nfd4 Qa6 66.Ne6 Kf6 67.Ned4 Qb7 68.Ne5 Qe7 69.Rc6 Kg7 70.Ndf3 Qa7 71.d4 Qa5 72.Nc4 Qc3 73.Ke2 Qc2 74.Nfd2 Bb4 75.d5 Qc1 76.Rc7 Kf6 77.Rc6 Kg7 78.Rc7 Kf6 79.Rc6 Kg7 ½–½. Crafty – GnuChess, Kleinschmidt, CT, 1999.

5.e3 g6 6.Nf3 Bd6 7.Bd3?? e4–+ 8.0-0 ed3 (9.Qa4 c5–+; 8...ef3?! 9.Qf3 Nh6 10.h3–+) 0–1. rene822 – Caissa, Live Game Caissa's Web, 2004.

5.Nf3 Bg4 6.h3 Bh5 7.g4 Bg6 8.Bg2 c6 9.bc6 Nc6 10.Qb3 Qd7 11.a4 Bc5 12.d4 Ba7 13.de5 fe5 14.c4 d4 15.Qb5 Bb8 16.Nh4 Nge7 17.Nd2 Bf7 18.Be4 0-0 19.Ba3 Rc8 20.Nf5 Ng6 21.Rb1+/– Ra7 22.Bc5 Ra8? 23.Qb7+– Qb7 24.Rb7 Ra6 25.Nd6 Bd6 26.Bd6 Be8 27.Bd5 Kh8 28.Ne4 Nd8 29.Rc7 Rb8 30.0-0 Ba4 31.Rc5 Rd6 32.Nd6 Nf4 33.e3 Nh3 34.Kg2 Ng5 35.Ra5 Bd7 36.Kg3 d3 37.Rd1 Bc6 38.Rd3 Bd5 39.Rdd5 Ndf7 40.Nf7 Nf7 41.Rd7 Kg8 42.Raa7 Rf8 43.c5 g6 44.Kh4 h6 45.c6 Ng5 46.Rg7 Kh8 1–0. Comet B50 – Doctor? 3.0, 2004.

7.Nf3 0-0 =+.

7.h3 0-0 (8.c4 Qd6–/+) 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Qa4 Nd7 11.d4 Nb6 12.Qb3 a4 13.Qb4 Qb4 14.cb4 Nf5 15.de5 fe5 16.Rc1 Rac8 17.e3 d4 18.ed4 ed4 19.0-0 Nd5 20.Nc2 d3 21.Ne3? Nde3 22.fe3 d2 23.Rc3 Ne3!! 24.Rf8 Rf8 25.Re3 d1Q 26.Kg2 Qf1# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Qa4 Nd7 11.d4 Nb6 12.Qb3 a4 13.Qb4 Qb4 14.cb4 Nf5 15.de5 fe5 16.Rc1 Rac8 17.e3 d4 18.Ke2!? –/+.

10.Qa4 Nd7 11.d4 Nb6 12.Qb3 a4 13.Qb4 Qb4 14.cb4 Nf5 15.de5 fe5 16.Rc1 Rac8 17.e3 d4 18.e4 Nd6–+ 19.Ng5 h6 20.Ne6 Rf3 21.Nb1 Ne4 22.Rc7?? Rc7 23.Nc7 Rf2 24.a3 d3 25.Ne6 Re2 26.Kf1 Nd5 27.Nd8 Ne3 28.Kg1 Re1# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Qc1 Nd7 11.d4 ed4 12.cd4 Qb4 13.Kf1 Qd4 14.Rb1 Qe4 15.Rg1 Rac8 16.Qe3 Qe3 17.fe3 Nf5 18.Kf2 Ne5 19.Nc2 Ng4 20.Kf3 Nh2 21.Kf4 Rce8 22.Nf2 g5 23.Kf5 Re5# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

10.Qc1 Nd7 11.g4 e4 12.f3 ef3 13.ef3 f5 14.g5 Ne5 15.Ke2 d4 16.Qb2 Qd5?? 17.Rhf1? d3 18.Ke3?? f4! 19.Nf4 Qc5 20.Ke4 Nc4 21.Nc4 Qc4 22.Ke3 Rf4 23.Qb3 Nd5 24.Kf2 Qe4 25.Kg3 Qf5 26.h3 Qg5 27.Kf2 Raf8 28.Ke1 Rf3 29.Rf3 Qg1 30.Rf1 Rf1 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.0-0 Ne6 17.Rc8 Rc8 18.e3 d4 19.Rb1 Nd5 20.Kg2 de3 21.fe3 Ne3?? 22.de3 Rc3 23.Rb2 Ra3 24.Kf3 Rc3 25.Ke4 Kf7 26.Rb4 Rc2 27.Ra4?? Nc5 28.Kf5 g6# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.0-0 Ne6 17.Rc8 Rc8 18.e3 d4 19.f4 de3–+ 20.de3 Rc3 21.Nb1 Re3 22.Kg2 Nd5 23.Rf3 Nef4 24.Nf4 Nf4 25.Kf2 Re2 26.Kg3 Rg2 27.Kh4 g5# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.0-0 Ne6 17.e3 Rc1 18.Rc1 e4 19.Rc3 f5 20.g5 Ng6 21.d3 Ne5 22.Rc2? ed3 23.Rb2?? d2! 24.Rb1 Rc8 25.Nf4 Rc1 26.Rc1 dc1Q 27.Kg2 Nf4 28.ef4 Nd3 29.Kg3 Qg1 30.Kf3 Qf2# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.0-0 Ne6 17.e3 Rc1 18.Rc1 e4 19.Nf4 Nf4–/+ 20.ef4 Ng6 21.f5 Ne5 22.h3 g6 23.Rc7 Rf7 24.Rf7 Kf7 25.Nb1 gf5 26.gf5 Nf3 27.Kf1 d4 28.b6 h5 29.Ke2 Ng1 30.Kf1 Nh3 31.Na3 Ke7 32.Nc4 Kd7 33.a3 Kc6 34.Ke2 Nf4 35.Kd1 h4 36.Kc2 h3 37.Na5 Kb6 38.Nc4 Kc5 39.Nb2 d3 40.Kc3 Nd5# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.0-0 Ne6 17.e3 Rc1 18.Rc1 e4 19.Nf4 Nf4 20.ef4 Ng6 21.f5 Ne5 22.h3 g6 23.Rc7 Rf7 24.Rf7 Kf7 25.Nc2 gf5 26.gf5 Nf3 27.Kf1 d4 28.Nb4 Nd2–+ 29.Ke2 Nf3 30.Nd5 Ng1 31.Kf1 Nh3 32.Nb6 Ke7 33.Na4 Kd6 34.Nb2 Nf4 35.a4 Kc5 36.Ke1 h5 37.Kd2 h4 38.Nd1 h3 39.f3 h2 40.Nf2 e3 41.Ke1 ef2 42.Kf2 h1Q 43.Kg3 Qh3 44.Kf4 Qh4# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.Rc3 Ne4 17.Rc8 Rc8 (18.Kd1 f5 19.gf5 Nf5–/+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.Kd1 Ne6 17.Rc8 Rc8 18.e3 Ng6 19.Nc2 Rc5–+ 20.d4 Rb5 21.Kc1 Kf7 22.Rf1 e4 23.Ne1 a3 24.f3 Ke7 25.fe4 de4 26.Nf4? Ngf4–+ 27.ef4 Rb2 28.d5?? Nd4 29.h4 e3 30.g5 Ne2 31.Kd1 Rd2# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.Kd1 Ne6 17.e3 e4 18.Rf1 Rc1 19.Kc1 f5 20.g5 f4 21.ef4 Nf4 22.Nf4 Rf4 23.h3 Rf3 24.Nc2 Rh3 25.Nd4 Rd3 26.Ne6 b6 27.Nc7 Kf7 28.Na8 Nc8 29.Rg1 Kg6 30.Rg3 Rg3 31.fg3 d4 32.a3? Kg5 33.Kc2 Kf5 34.d3 e3 35.Nc7 Nd6 36.Nd5 Kg4 37.Nb6 Kg3 38.Na4 e2 39.Kd2 Kf2 40.b6 e1Q 41.Kc2 Qe2 42.Kb3 Qd3 43.Kb2 Nc4 44.Kc1 Ke1 45.Nb2 Qc3 46.Kb1 Qb2# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.Rc1 Rac8 14.g4 c5 15.bc5 Nc5 16.Kd1 Ne6 17.e3 e4 18.Nf4 Rc1 19.Kc1 Nf4 20.ef4 f5 21.Rg1 fg4 22.Rg4 Ng6 23.Nb1 Nf4 24.Nc3 Nd3 25.Kc2 Nb4 26.Kb2 Rf2 27.Ka3 Nc2 28.Ka4 Rd2 29.Rg5 e3 30.Re5?? d4 31.Nb1 Rh2 32.Na3 e2 33.Nc2 d3 34.Nd4 d2 35.Re2 d1Q 36.Nb3 Re2 37.Ka5 Ra2 38.Kb4 Rb2 39.Kc5 Rb3 40.Kb6 Qd6 41.Kb7 Rb5 42.Ka7 Qa3# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

11.Qb4 Qb4 12.cb4 Nd7 13.g4 f5 14.f3 fg4 15.fg4 Rac8 16.Rf1 Rf1 17.Kf1 Nf6 18.Nf2 Kf7 19.h3 Rf8 20.Rc1 Ke6 21.d3 Kd7 22.Re1 h5 23.Kg2 hg4 24.Ng4 Ng4–+ 25.hg4 Rf4 26.Nc2 Rg4 27.Kf3 Rf4 28.Kg3 Nf5 29.Kg2 e4 30.Rf1 Nh4 31.Kg1 Rg4 32.Kf2 ed3 33.ed3 Rg2 34.Ke3 Rc2 35.a3 g6 36.Rf2 d4! 37.Kd4 Rf2 38.Ke3 Ra2 39.Kf4 Ra3 40.Kg4 Rd3 41.Kh4 a3 42.Kg5 a2 43.Kg6 a1Q 44.Kf5 Kd6 45.Ke4 Qf1 46.b6 Qf3# 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

6.Ba3 Ba3 7.Ra3 Ne7 8.e3 Qd6 9.Rb3 0-0 10.f3 Nd7–+ 11.g4 Bg6 12.h4 Nc5 13.Rb2 Bd3 14.Bg2 Bc4 15.Bf1 Bf1 16.Kf1 Nd3 17.Rc2 e4 18.Qe2 c6 19.bc6 Qc6 20.Ra2 Nc1 21.Qb5 Qb5 22.ab5 Na2 23.fe4 de4 24.Ne2 f5 25.g5 a4 26.Kg2 a3 27.Na3 Ra3 28.Ra1 Ra4 29.h5 Nc3! 30.Ra4 Na4 31.Nf4 Rd8 32.Kf2 Rd2 33.Ne2 Nc3 34.Ke1 Re2 35.Kf1 Ned5 36.g6 hg6 37.hg6 Ne3 38.Kg1 Rg2 39.Kh1 Ne2 40.b6 Ng3 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

6.Ba3 Ba3 7.Na3 Ne7 8.h3 0-0 9.g4 Be4 10.f3 Bg6 11.h4 Nd7 12.h5 Bf7 13.d4 c5 14.e3 e4 15.Bg2 Qc7 16.Rh3 ef3 17.Bf3 Rfe8 18.Ne2 Nc8 19.Kf2 Nd6 20.Ng3 cd4 21.cd4 Qc3 22.Qc1 Re3! 23.Qc3 Rc3 24.h6 g5 25.Kg2 Rd3 26.Nf5 Nf5 27.gf5 Rc8 28.Bh5 Rd2 29.Kf1 Bh5 30.Rh5 Rd4 31.Nb1 Rc1 32.Ke2 Rb4 33.Rh3 Rb2 34.Kd3 Rbb1 35.Rb1 Rb1 36.Kd4 Nb6 37.Ra3 Rc1 38.Ra2 Rc4 39.Kd3 Kf7 40.Rc2 Rc2 41.Kc2 g4 42.Kd2 g3 43.Ke2 d4 44.Kf3 d3 45.Ke3 g2 46.Kd3 g1Q 47.Ke4 Qg3 48.Kd4 Qf3 49.Kc5 Qe3 50.Kd6 Qe5 0–1. rum – Caissa, Live Game Caissa's Web, 2004.

6.d3 Nd7 7.Ba3 Ba3–/+ 8.Ra3 Nh6 9.f3 0-0 10.g4 Be6–+ 11.Qd2 c6 12.Bh3 Nf7 13.d4 Nd6 14.Qd3 cb5 15.ab5 e4 16.fe4 de4 17.Qc2? Nb5 18.Ra1 Nd6 19.Nd2 e3 20.Ne4 Ra6 21.g5 Bd5 22.Bg2? fg5 (23.h4 Ne4 24.Be4 Nf6 25.Bd5 Qd5–+ (25...Nd5?! 26.hg5 h6 27.Nf3–+); 22...f5!? 23.Nd6 Bg2 24.Qb3 Kh8 25.Nf7 Rf7 26.Qf7 Bh1 27.Nh3–+) 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

6.d3 Nd7 7.Ba3 Ba3–/+ 8.Ra3 Nh6 9.f3 0-0 10.g4 Be6 11.h4 d4 12.c4 Qe7 13.Bh3 Qb4 14.Kf2 Nc5 15.g5 fg5 16.Be6? Ne6 17.hg5 Ng4 18.Kg3 Ne3 19.Qc1 Qe7 20.Nh3 Ng5 21.Ng5 Qg5 22.Kf2 Qg2 23.Ke1 Qh1 24.Kd2 Qg2 25.Rb3 Rf3 26.b6 Rf1 27.Qf1 Qf1 28.Nc3 cb6 29.Rb6 dc3 30.Kc3 Qc1 31.Kb3 Qb1 32.Kc3 Qc2# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

6.d3 Nd7 7.Nd2 Be6 =+.

6.d3 Nd7 7.Nd2 Ne7 =+.

6.e3 Bd6 7.c4 =.

6.e3 g6 7.f3 h5 8.Be2 c6 9.g4 hg4 10.fg4 Be4 11.Bf3 f5–+ 12.gf5 Qh4 13.Ke2 Bf5 14.Qe1 Qc4 15.Kf2 cb5 16.ab5 Qb5 17.Ba3 Nf6 18.Bf8 Rf8 19.Na3 Qd7 20.Ne2?! Bg4 21.Qg1 Ne4 22.Ke1 Rf3 23.Rb1 Nf2 24.c4 Nd3 25.Kd1 Rf2 26.cd5 Qa4 27.Rb3 Qb3 28.Nc2 Be2# 0–1. VILLENEUVE – Caissa, Live Game Caissa's Web, 2004.

4.a4 Bf5 5.a5 Bd6 6.e3 Ne7 7.Bb5 c6 8.Ba4 0-0 9.Nf3 Bd3 10.Bb3 Nd7 11.Na3 e4 12.Ng1 Qc7 13.Nc2 f5 14.g3 Ne5 15.Nd4 Bc4 16.Bc2 Qd7 17.Qh5 Nd3 18.Bd3 Bd3 19.Nh3 Rf6 20.Nf4 Bf4 21.ef4 Re8 22.Qd1 Rh6 23.Qb3 Rh3 24.0-0-0 b6 25.a6 c5 26.Nc2 Ba6 27.Ne3 cb4 28.Qb4 Rc8 29.Qd4 Be2 30.Rde1 Bf3 31.c4 Nc6 32.Qd5 Qd5 33.Nd5 Bh1 34.Rh1 Kf7 35.d4 ed3 36.Kd2 Na5 37.Kd3 Nc4 38.Bc3 a5 39.Re1 Rh2 40.Re7=+ Kg6?? 41.Rg7+– Kh6 42.Rg5 Rg8 43.Rg8 Ne5 44.Be5 Rf2 45.Rg5 Rf3 46.Kd4 Rf4 47.Nf4 b5 48.Rh5# 1–0. NN – SuperConstellation4, 1988.

4.Qb3 c5 5.g3 c4 6.Qa4 Bd7 7.Qc2 b5 8.a4 ba4 9.Ra4? (better 9.Bg2!? Bc6 10.Ra4 Ba4 11.Qa4 Qd7 12.Qd7 Nd7 13.Bd5=+) 9...Ba4-+ 10.Qa4 Qd7 11.Qa2 Qb7 (11...a5!? 12.e4-+) 12.Bg2 a5! 13.Qc4 (13.ba5 Qb5 Decoy) 13...dc4 (13...e4!? 14.Qb3 Nd7-/+) 14.Bb7-/+ Ra7 15.Bd5 ab4 16.Bc4 bc3 17.Nc3 Rb7 18.Bb5 Nd7 19.Nf3 Kd8 20.0-0 Bd6 21.Ra1 Nb6 22.Ne4 (22.d4=) 22...Be7 (22...Nc8 23.Nc3=+ (23.Nd6? Nd6 24.Be5 Nb5-+)) 23.Ba3 (better 23.Bc3!?+/-) 23...Ba3= 24.Ra3 Kc7 (better 24...Nc8 25.Ba6 Rb1 26.Kg2 Nge7=) 25.Nc5+/- Rb8 26.Ra7 (better 26.Na6 Kb7 27.Nb8 Kb8 28.d4+-) 26...Kd6+= 27.Nb7 (27.Ne4 Kd5 28.Nc3 Kd6 29.Rg7 Nh6+/-) 27...Ke6 (27...Kd5 28.d3=) 28.d4+= Ne7 (28...e4 29.Nc5 Kd5 30.Na6+=) 29.Nc5+/- Kd6 30.Ne4 Ke6 31.Ra6 (31.de5 Ra8 32.Nc5 Kd5 33.Re7 Kc5+/-) 31...Rhc8= 32.Nc5 (32.de5!? fe5 33.Neg5 Kd5 34.Ra7+= (worse 34.Nh7 e4 35.Nfg5 Rc1 36.Kg2 Kc5=)) 32...Kf7=+ 33.de5?? (better 33.Ne4 Rc1 34.Kg2 ed4 35.Nd4=+) 33...f5 (better 33...Rc5 34.ef6 Rb5 35.fe7 Rb7-+) 34.e6+/- Kf6?? (better 34...Kg8 35.Nd7 Nd7 36.ed7 Rb5 37.dc8R Nc8+/-) 35.Nd7+- Ke6 36.Nb6 (worse 36.Rb6 Rb6 37.Nb6 Rb8 38.Nd4 Kd6+-) 36...Kf7 (36...Rc1 37.Kg2 Rb7 38.Be8+-) 37.Bd7 (better 37.Nc8 Rc8 38.Ng5 Kg8 39.Bd7+-) 37...Rc1 38.Kg2 g6 39.Ne5 Kf6 (39...Kg7 40.Nbc4+-) 40.Nbc4 (better 40.Nd3 Ra1 41.Nd5 Kg7 42.Ra1 Nd5+-) 40...Kg7 41.Nd6 Rbb1 (41...Rc5 42.f4 Rc2+-) 42.Ne8 Kh6 (42...Kg8 43.Rf6 Rb6 44.Rb6 Rc5 45.Be6 Kf8 46.Nd7 Ke8 47.Nc5 Kf8+-) 43.Nf7 Kh5 44.Ng7 (44.Nf6) 44...Kg4 45.h3 1-0. beatmeeasy (2000) - kotada80 (2010), lichess.org, 2021.

4.d3 Bd6 5.e4 c6 (5...Be6 6.a3+=) 6.a3 (6.Nf3 Ne7+=) 6...Ne7 7.c4 (7.Qh5 Ng6+=) 7...0-0 8.g4 (8.Nd2 b6+=) 8...Be6 (8...a5 9.c5 Bc7 10.Qf3–/+) 9.Nd2 (9.Qf3 b6–/+) 9...a5 10.ed5 cd5 11.c5 Bc7 12.b5 Qd7 (12...Nd7 13.Rc1–/+) 13.b6 Bd8 (worse is 13...Bg4 14.f3 Bb6 15.cb6+=) 14.Be2 (14.h3 Qb5 15.Qc2 d4–/+) 14...Ng6 15.h4 (15.d4 Nf4–/+) 15...Na6 (15...Nf4 16.d4–/+) 16.d4 e4 (16...Nf4 17.f3–/+) 17.Nf1 (17.Qb3 f5 18.Bb5 Qc8=) 17...f5+= 18.g5 f4 19.Bh5 (19.h5 Nh8–/+) 19...Ne7–/+ 20.Be2 (20.g6 h6–/+) 20...Nb8 (20...f3 21.Ba6 Ra6 22.Rb1–/+) 21.Qb3 (21.a4 Nbc6+=) 21...Nbc6 (21...a4 22.Qb4–/+) 22.0-0-0 (22.Bb5 Nf5+=) 22...a4 23.Qc3 Na5 24.Qb4 Nc4 (better is 24...Bf5–/+) 25.Qc3? (better is 25.Bc4 dc4 26.Qe1+=) 25...Nb6!–+ (25...Nb2?! 26.Qb2 Ra5 27.f3–/+) 26.Nd2 (26.cb6 Rc8 Combination) 26...Nbc8 27.Ne4? (27.f3–+) 27...de4 28.Bb5 (28.d5 Nd5 29.Bc4 Rf5–+) 28...Qd5 29.Ne2 (29.Qc2 Ra5 30.Bf1 b6–+) 29...Nd6! 30.cd6 Rc8 (worse is 30...Qb5 31.de7 Be7 32.Qc2–+) 31.de7 (31.Qc8 Nc8 (31...Bc8?! 32.de7 Be7 33.Nc3–+) 32.Nc3 Qf5–+) 31...Be7 (31...Rc3?? 32.Nc3 Qf5 33.ef8R (33.ed8R?! Rd8 34.Ba4 f3+–; 33.ed8Q?! Rd8 34.Ba4 f3+–) 33...Kf8 34.Ba4+–) 32.Ba4 f3 33.Qc8 (33.Bc2 fe2 (33...Rc3?! 34.Nc3 Qc4 35.Ne4–+) 34.Qe3 ed1R 35.Rd1 Bd6–+) 33...Rc8 34.Nc3 (34.Kd2 fe2 35.Rc1 Bg5 36.hg5 Qg5 37.Ke2 Bg4 38.f3 Bf3 39.Kf2 Rf8 40.Bb3 Kh8 41.Bf7 Bh5 42.Rh3 e3 43.Kf1 Rf7 44.Rf3 Rf3 45.Ke2 Qb5 46.Kd1 Qd3 47.Ke1 Rf1) 34...Ba3! 35.Kd2 (35.Ba3 Qa2 Double attack (35...Rc3 Deflection; 35...Qa2 Decoy; 35...Rc3 Overloading)) 35...Qc4 (better is 35...Rc3 36.Ke1 Bb2 37.Kf1 Qc4 38.Kg1 Qa4 39.Kh2–+) 36.Ba1 Bb4 (36...Bb4 37.Ke3 Bc3 38.Bc3 Qc3 39.Ke4 Qc4–+) 0–1. Viloria,Daniel (1950) – Barros,Raul (2220), ATL–ch Barranquilla, 1999.

4.d3 Be6 5.Nd2 Nd7 6.g3 Ne7 7.Bg2 c6 8.Ngf3 Ng6 9.a4 a5 10.b5 cb5 11.ab5 Qb6 12.c4 dc4 13.dc4 Bb4 14.Ba3 Ba3 15.Ra3 0-0 16.0-0 Rfd8 17.Qc2 Qc7 Attacks the backward pawn on c4 18.Rfa1 Ra7 19.Qc3 b6 20.Rc1 Nc5 21.Ne1 Ne7 22.Nd3 f5 (22...Nd3 23.ed3 Nf5 24.Re1+=) 23.Nf3 (better is 23.Ne5 Rd2 24.Qd2 Qe5 25.Qd8 Kf7 26.Qb6+/–) 23...e4+= 24.Nc5 Qc5 (worse is 24...bc5 25.Ng5 Bd7 26.Rca1+/–) 25.Ng5 Bc8 26.Qe3 (26.Raa1 a4+=) 26...Rc7 27.Qc5 Rc5 28.f3 h6 29.Nh3 ef3 30.Bf3 Rd4 (30...Be6 31.Nf4 Rc4 32.Re1–/+) 31.Re3 (better is 31.Nf4!?+=) 31...Kf7–+ 32.Nf4 Rdc4 33.Rc4 Rc4 34.Nd5 Rc1 35.Kf2 Nd5 36.Bd5 Kf6 37.Re8 Rc7 38.Rf8 Ke5 39.Bc6 Bd7 (39...a4!? 40.Re8 Kd4 41.Rd8 Kc5–+) 40.Rf7–/+ Kd6 (40...Bc6?! 41.Rc7 Bb5 42.Re7 Kd4 43.Rg7=) 41.Rg7? (41.Bd7 Rd7 42.Rf5–+) 41...Bc6–+ 42.Rg6 Kc5 43.bc6 Rc6 44.Rg8 a4 45.Rf8 a3 46.Rf5 Kb4 47.Rd5 a2 48.Rd1 Kb3 0–1. Martinez Pastor,Francisco – Ortega Morales,Pedro (1890), Madrid–ch Veterans, 2009.

4.d4 Nc6 5.Qd3 Be6 6.b5 Na5 7.Qf3 Nc4–/+ 8.a4?? Nb2 0–1. speeders – mmisra (2275), net–chess.com, 2004.

4.d4 e4 5.f4 Bd6 6.e3 Nd7 (6...Ne7 7.a3=+) 7.Bb5 (better is 7.Qh5 g6 8.Qd5+/–) 7...c6 8.Ba4 Nb6 9.Nh3 (9.Bb3 Ne7–/+) 9...Ne7 10.0-0 (better is 10.Bb3!?–/+) 10...Bh3 11.gh3 Na4 12.Qa4 Qd7 13.Kg2 Nf5 14.Nd2? (14.Bc1–+) 14...Ne3 15.Kf2 Qh3 16.Rg1 (16.b5 Bf4 17.Ke1 Nf1 18.Nf1–+) 16...Bf4 17.Rae1 (17.Ke1 Qh2 18.Rg7–+) 17...Qh2 18.Rg2 0–1. Hoops253 – Ramin (1970), ChessWorld.net, 2003.

4.e3 a5 5.b5 Bf5 6.c4 c6 (6...Be6 7.cd5 Bd5 8.Nc3=) 7.d4 cb5 8.Bd3? (better is 8.cd5 Qd5 9.de5 Bb4 10.Nc3 Qe5 11.Qd2+=) 8...Bd3–+ 9.Qd3 bc4 10.Qe2 Bb4 11.Nc3 Ne7 (11...Nc6 12.Nf3–+) 12.Nf3 (12.de5 fe5 13.Qh5 Ng6–+) 12...Nbc6 (12...e4 13.Nd2–+) 13.0-0 (13.de5 fe5 14.a3 Bc3 15.Bc3 Ng6–+) 13...0-0 14.a3 ed4 (14...Bd6 15.de5 fe5 16.e4–+) 15.ed4 (15.Nd4 Nd4 16.ed4 Bc3 17.Bc3 Qd7–+) 15...Bc3 16.Bc3 (16.Qe6 Kh8 17.Bc3 Re8–+) 16...b5 (16...Qd7 17.Rfe1–+) 17.Rab1 (17.Qe6 Kh8–+) 17...Qb6 (17...Qd6 18.Rb5 Qa3 19.Qe6 Kh8 20.Bb2–+) 18.Qe6 Kh8 19.Rb2 (19.Qd6 Rae8–+) 19...Rab8 20.Rfb1 Qa6 (20...Rfe8 21.Rb5 Qb5 22.Rb5 Rb5 23.Kf1–+) 21.Re1 (better is 21.Qd7–+) 21...Qb6?? (21...Rfe8 22.Ra2–+) 22.Reb1 Rfe8 23.Qf7 Qd8 (23...Red8!?–+) 24.Rb5–/+ Rb5 25.Rb5 Qa8 (25...a4!?–/+) 26.Ba5 Na5 (26...Rc8 27.a4=) 27.Ra5 Qa5 A deflection (27...Qb8 28.Nd2=) 28.Qe8 A double attack 28...Ng8 29.a4 Qb6 (29...Qc3 30.h3=) 30.Qb5 (30.h3 Qb1 31.Kh2 Qf1=) 30...Qa7 (30...Qe6 31.a5=) 31.h3 (31.Qd5 Qa4 32.h3 Qd1 33.Kh2 c3–+) 31...Qa8= 32.a5 Ne7 33.a6 h6 (33...Nc6!?=) 34.Qb7+/– Qb7 35.ab7 Nc6 36.Ne1 (36.Kf1 Kg8+/–) 36...Kg8+= 37.Nc2 Kf7 38.Nb4! Nb8 (38...Nb4 Deflection from b8 39.b8Q) 39.Nd5 Ke6 40.Ne3 c3 41.Kf1 ½–½. Hecker,K – Roth,H, corr TT001 BdF, 1995.

4.e3 c5 5.bc5 Bc5 6.Bb5 Nc6 7.Nf3 a6 8.Bc6 bc6 9.d4 ed4 10.cd4= Bb4 11.Nc3 Nh6 12.0-0 Bg4 13.h3 Bh5 14.g4 Ng4 15.a3 Qd7?? 16.ab4+– Ne5? 17.de5 Qh3= 18.ef6?? Bf3–+ 19.Qf3 Qf3 20.fg7 Qg4 21.Kh2 Qg7 22.Rg1 Qc7 23.Kg2 Rg8 24.Kf1 Rf8 25.Re1 0-0-0 26.Ne2 Qf7 27.f4 –+. mwojo (1745) – malaysianisme, net–chess.com, 2004.

4.Nf3 a5 5.a3 Bd6 6.d4 e4 (6...e4 7.Nfd2 ab4 8.cb4 f5+=). Bourassa,Francois – James,Michael, QE.2004.0.00083, 2004.

4.Nf3 Bg4 5.h3 Bf3 6.ef3 Bd6 7.d4 Ne7 8.de5 fe5 9.Bd3 0-0 10.Qc2 e4 (better is 10...h6=) 11.Bb5?? (better is 11.fe4 Nd7 12.0-0+/–) 11...c6 (11...ef3!? 12.Bd3 Qe8 13.0-0–+) 12.Be2–/+ ef3 13.Bf3 Nf5 14.0-0 Nd7 15.Re1 Ne5 16.Nd2 (better is 16.Bd1–/+) 16...Nc4?? (better is 16...Qg5 17.Bg4 Ng4–+) 17.Nc4+/– dc4 18.Qe4 Qg5 19.Be2 (19.Qc4 Kh8 20.Rad1 Nh4+/–) 19...Nh4 (better is 19...b5+=) 20.g3?? (better is 20.Rad1 Rad8 21.Bc4 Kh8 22.Bc1+/–) 20...Bg3!–+ 21.Bc4 (21.fg3 Qg3) 21...Kh8 22.fg3?? (22.Qg4 Bf2 23.Kh1 Qg4 24.hg4–+) 22...Qg3 23.Kh1 Qh3 24.Kg1 Nf3 25.Qf3 Qf3 (25...Rf3 26.Re2 Rg3 27.Kf2 Rf8 28.Bf7 Rf7 29.Ke1 Qd7 30.Rf2 Re3 31.Kf1 Qh3 32.Kg1 Rg3 33.Rg2 Rg2) 26.Re2 Qg3 (26...Rf5 27.Re8 Re8 28.Bf1 Qf2 29.Kh1 Rh5 30.Bh3 Rh3) 27.Rg2–+ Qe3 28.Kh1 Rad8 (28...Rf4 29.Be6 Rh4 30.Rh2 Qf3 31.Kg1 Qg3 32.Rg2 Qe3 33.Rf2 Rf8 34.Bf7 Rf7 35.Raf1 Rg4 36.Kh1 Qh6 37.Rh2 Rf1) 29.Rag1 (29.Be2 Rd2 30.c4 Rb2–+) 29...Qf3 30.Be2 Qh3 31.Rh2 Qh2 (better is 31...Qe6 32.c4 Qe4 33.Rhg2–+) 32.Kh2 Rf2 33.Kg3 Re2 34.Ba1 Rd3 35.Kf4 h6 36.c4 Rf2 37.Ke4 Rd7 38.a4 Re2 39.Kf5 Rf7 40.Kg6 Rf6 (better is 40...Kg8 41.Rg3 Rf1–+) 41.Bf6–/+ gf6 (better is 41...Re6 42.Rd1 Rf6 43.Kh5 a5–/+) 42.Rd1 Re8 43.Kf6 h5 44.Rh1 Rf8 45.Kg5 Rg8 46.Kh5 Rg3 47.Re1 Kg7 48.Re4 (48.Re7 Kf6 49.Rb7 a5=) 48...Kf6= 49.Rf4 Ke5 50.Rf7 Rh3 51.Kg4 Rc3 52.Re7 (52.Kg5!?=) 52...Kd6+= 53.Rb7 Rc4 54.Kf3 Rc3 (54...a5 55.ba5 Ra4 56.Ra7+=) 55.Ke4 a6 56.Rb6 a5 57.ba5 Rc4 58.Kd3 Ra4 59.Ra6 Kc7 60.Kc3 Kb7 61.Kb3 Ka6 62.Ka4 c5 63.Kb3 c4 64.Kc4 Ka5 ½–½. pierred – Graffi, Friendly Game, 5m + 0s, 2003.

4.g3 Bd6 5.Bg2 Ne7 6.d3 Nbc6 7.Nf3=+ Be6 8.0-0 Qd7 9.a3 0-0-0 10.b5 Na5 11.a4 a6 12.ba6= b6 13.Na3 Kb8 14.Nb5+/– e4 15.Nfd4 ed3 16.ed3 h5 17.Ne6 Qe6 18.Re1 Qd7 19.Qf3 Nb3 20.Rad1 Nc5? 21.a7 Kb7 22.c4 Na4? 23.Bd4 Bb4 24.Re2 Nc6? 25.cd5+– Na7?? 26.Na7 Ka7 27.Ra1 Ka6 28.Rea2 b5 29.d6 cd6? 30.Ra4! ba4 31.Ra4 Ba5 32.Qd5 Qb5 33.Qf7 Rd7 34.Qa2 Rc7 35.Be3 Rhc8 36.Bd2 Rc1 37.Bc1 Rc1 38.Bf1 Kb6 39.Kg2 Rb1?? 40.Ra5!+– Qb4 41.d4 Rb2 42.Ra6 Kb7 43.Qf7 Kb8 44.Qa7 Kc8 45.Rc6 Kd8 46.Qc7 Ke8 47.Qc8 Kf7 48.Rc7 Kg6 49.Bd3 (49.Bd3 f5 50.Qf5 Kh6 51.Qg6) 1–0. mic (2120) – roadrunner (2085), net–chess.com, 2007.

4.h3 c5 5.a3 (5.e3 Be6 6.Nf3 e4=+) 5...c4 6.d3 Be6 (6...cd3!? 7.ed3 Nc6=+) 7.dc4+= dc4 8.Qd8 (8.Nd2 Nc6=) 8...Kd8 9.a4 (9.Nd2 Nd7=) 9...Ne7 (9...a5 10.b5=) 10.Na3 a6 (better 10...Nc8 11.e4 Nd6=+) 11.e4 b5 (11...Nc8 12.Bc4 Ke7 13.Ne2+/-) 12.Rd1 (12.0-0-0 Nd7 13.ab5 Nc8 14.ba6 Nd6+/-) 12...Nd7 13.ab5 ab5 14.Nb5 f5? (14...Nc8!? 15.Nf3 Rb8+/-) 15.Nd6 (15.Nf3 fe4 16.Ne5 Ng6 17.Nc4 Nf4+-) 15...f4 (better 15...fe4 16.Bc4 Bc4 17.Nc4 Kc7+/-) 16.Bc4 Bc4 17.Nc4 Kc7 18.Nf3 Ng6 19.Rd7! Kd7 20.Nb6 Kc6 (20...Kc6 21.Na8 Bd6+-). Shocker36 (1760) - esteritafelix (2445), ChessWorld.net, 2013.

4.h4 c5 5.bc5 Bc5 6.Qa4 Nc6 7.Nf3? (7.Ba3 Ba3 8.Na3 Nge7-/+) 7...Bd7 (better 7...Qb6!? 8.Qb3 Bf2 9.Kd1 Bg4-+) 8.Qc2 Nge7 9.a3 Rc8 10.Qb3 (10.e3 0-0-/+) 10...Qc7 11.Rg1? (better 11.e3-/+) 11...Na5-+ 12.Qd1 (12.Qc2 e4 13.e3 ef3 14.gf3 Nf5-+) 12...Nc4 (better 12...Qb6 13.d4 Qb2 14.Nbd2-+) 13.Bc1 Qa5 (better 13...e4-+) 14.a4 Bf5 (14...e4!? 15.d4 Bd6-+) 15.d3-/+ Nb6 16.g4 Bd7 17.Nbd2?? (better 17.g5!?-/+) 17...Ba4 (17...Qc3 18.Ra2 Ba4 19.Bb2 Qb2 20.Rb2 Bd1 21.Kd1 Bf2 22.Rh1-+) 18.Ra4? (18.Bb2 e4 19.Nd4 Bd4 20.cd4-+) 18...Qa4 (18...Na4 19.c4 e4 20.de4 de4 21.Nh2-+) 19.Qa4 (19.Nb3 Ba3 20.Bd2 Bb2-+) 19...Na4 20.Nb1 (20.c4 Bb4 21.e4 dc4 22.dc4 b5-+) 20...d4 (better 20...Nc3!? 21.Nc3 Bb4 22.g5-+) 21.c4 Bb4 22.Kd1 Nc6 23.g5 f5 24.h5 e4 25.Nh4 0-0 26.Bh3 Ne7 27.Ba3 (27.g6 Rc5-+) 27...Ba3 28.Na3 Nc3 29.Kd2 ed3 (29...Rcd8!? 30.Nb5 Nb5 31.cb5-+) 30.ed3 Rce8 31.Re1 Nc6 32.Re8 Re8 33.Nf5?? (33.Bf1 f4 34.Nf3-+) 33...Re2 34.Kc1 Nb4 35.Ne7 Kh8 (35...Kh8 36.Ng6 hg6 37.h6 Nd3; 35...Kf7 36.Be6 Ke6 37.Nd5 Nd3) 0-1. beatmeeasy (1985) - CorrezienEnFureur (1955), lichess.org, 2021.

4.h4 Nc6 5.h5 Bf5 6.a4 Bd6 7.Nf3 Nh6 8.Nh4 Be6 9.a5 0-0 10.b5 Ne7 11.Qb3 Qd7 12.d4 Nef5 13.Nf5 Nf5 14.g4 Ne7 15.h6 g6 16.Bg2 c5 17.dc5 Bc5 18.Ba3 Ba3 19.Qa3 Bg4 20.f3 (20.Rg1 Be6-+ (20...Qb5?! 21.f3=+)) 20...Be6 21.Nd2 Nf5 22.Kf2 (22.Qb2 Rac8 23.Bh3 Ne3 24.Be6 Qe6-+) 22...d4 (22...Qb5 23.Qb4 Qc6 24.e4 de4 25.fe4-+) 23.Ne4 Qb5 24.Rab1 Qd5 (24...Qa6 25.Qb4 Bd5 26.Nc5-+) 25.f4 Qd8 26.Rb7 Bd5 27.Rb4?! (27.Rb5 Ne3 28.Bf3-+) 27...Ne3 28.Bf3 Nc2 (28...ef4?! 29.Rd4 Nc2 30.Qc5 Nd4 31.Qd5 Qd5 32.Nf6 Kh8 33.Nd5 Nf3 34.ef3-+) 29.Qb2 Nb4 30.Qb4 Rb8 31.Qc5 Rc8 32.Qd5 Qd5 33.Nf6 Rf6 34.Bd5 Kf8 35.c4 (35.cd4 Rf4 36.Bf3 ed4-+) 35...Rf4 (worse 35...ef4 36.Kf3-+) 36.Kg3 Ke7 (36...Rb8 37.Rd1-+) 37.Rb1 Rc7 38.Rb8 Rf1 39.Rh8 Rg1?? (better 39...Kd6-+) 40.Kf2=+ Rg5 41.Rh7 Kd6 42.Rh8 (better 42.Rg7!? Rh5 43.Rg6 Kc5 44.Rg7=) 42...Rh5 43.Rd8 (better 43.Kg3!?-/+) 43...Ke7-+ 44.Ra8 (44.Rh8 Kf6-+) 44...Rh6 45.Rg8 Kf6 46.Kg3 Kf5 (better 46...Rch7!? 47.Be4-+) 47.Rf8 Kg5 48.Rf7 (48.Rf7 Rf7 49.Bf7-+). beatmeeasy (2010) - kozliik007 (2000), lichess.org, 2021.

4.h4 d4 5.Nf3 c5 6.bc5 Bc5 7.cd4 ed4 8.Qa4 (better 8.Qc2!? Bd6 9.Nd4+/-) 8...Nc6= 9.h5 Nge7 (9...Qb6!? 10.Ba3 Bf5=+) 10.h6= g6 11.e3 de3 12.fe3 0-0?? (better 12...Nf5=) 13.Qc4+- Qd5 14.Qd5 (better 14.Nc3 Qc4 15.Bc4 Kh8 16.Ne4+-) 14...Nd5+= 15.Bc4 Be6 16.e4 Nf4 17.Be6 Ne6 18.Nc3 Nf4 19.Kf1 Rae8 20.Nd5 (better 20.Rh4 Nd3 21.Rb1=+) 20...Re4?? (better 20...Nd5 21.ed5 Ne7-/+) 21.Nf6+/- Rf6 22.Bf6 Nd3 (22...Ng2 23.Rc1 Bb6 24.Kg2 Rg4 25.Kh3+/-) 23.Rh4 Re6 24.Bd4 (24.Bc3 Be7 25.Rg4 Bf8+-) 24...Be7? (better 24...g5!? 25.Rg4 Nd4 26.Nd4 Rf6 27.Nf3 Rh6 28.Rg5 Kh8 29.Rc5 Nc5+=) 25.Rh3 Nd4 26.Nd4 Rf6 27.Kg1 Nf4 28.Rc3 Rd6 (28...b6!? 29.Rc8 Rf8 30.Rf8 Bf8+/-) 29.Rc8+- Kf7 30.Nb5 (better 30.Nf3 Kf6 31.Rc7+-) 30...Rd2+= 31.Na7 Ne2 (31...Rg2 32.Kh1+=) 32.Kf1 (better 32.Kf2!? Nd4 33.Ke3 Rg2 34.Rc7 Nf5 35.Kf3 Rg3 36.Kf2+=) 32...Ng3= 33.Ke1?? (33.Kg1 Ne2 34.Kf2 Nd4 35.Ke3 Rg2 36.Rc7 Nf5 37.Kf3 Nh4 38.Kf4 g5 39.Ke4+/-) 33...Bb4-+ 34.Rc7 Rd7 (better 34...Kf6!? 35.a3 Re2 36.Kd1 Re1 37.Kc2 Ra1 38.ab4 Ra7 39.Rh7 Nf5-+) 35.Kf2-/+ Ne4 36.Kf3?? (better 36.Ke3 Rc7 37.Ke4=+) 36...Ng5 (36...Rc7?! 37.Ke4 Bf8 38.Nb5 Re7 39.Kd5=+) 37.Kg4 Rc7 38.Kg5 Rc5 (better 38...Rc4 39.Rf1 Ke6-+) 39.Kg4=+ Ba5 40.Rd1 Bb6 (better 40...Ke6 41.Rb1 b6=) 41.Rd7+/- Ke8 42.Rb7 Kd8 1-0. beatmeeasy (1990) - CoachQuiroz_CGKLL (1980), lichess.org, 2020.

4.h4 Bf5 5.d3 Bd6 6.Nf3 Nd7 7.Qb3 Ne7 8.Rg1 Be6 9.g4 Bf7 10.g5 c5 11.a3 Qc7 12.gf6 Nf6 (better 12...gf6!? 13.Bh3 Rg8=+) 13.Rg7 Bg6 14.Nbd2 (14.bc5 Bc5 15.c4 Kf8+=) 14...Kf8 15.Ng5 Qd7 16.Bh3 Bf5?? (better 16...Ng4 17.Rg6! hg6+-) 17.Bf5 Qf5 18.Re7 (better 18.e4 Ne4 19.de4+- (19.Nde4?! Kg7 20.Nd6 Qf6 21.bc5 h6+-; 19.Nge4?! Kg7 20.Nd6 Qf6 21.bc5 Rhf8+-)) 18...Be7 19.0-0-0 (19.bc5!? Ng4 20.Ndf3+= (20.Qb7?? Qf2 21.Kd1 Ne3 22.Kc1 Qe1)) 19...h6 (19...cb4!? 20.cb4 Rc8 21.Kb1 Qf2 22.Be5 Qe2=) 20.Ngf3 Qe6 (20...e4 21.de4 de4 22.Qc2-/+) 21.c4 Bd6 (better 21...cb4 22.Be5 dc4 23.Nc4 Rg8=+) 22.cd5 Qd5 (22...Qe7!? 23.bc5 Rc8+/-) 23.Qd5+- Nd5 24.Ne5 (24.Ne4 Bc7 25.Nc5 Rg8+-) 24...Be5 (better 24...Rh7!? 25.Nec4 Be7 26.bc5 Bc5+/-) 25.Be5+- Rg8 26.Bd6 (26.bc5!? Rc8 27.Kb2 Rg4+-) 26...Kf7+/- 27.bc5 Rac8 (27...Nc3 28.Re1 Rg1 29.Rg1 Ne2 30.Kc2 Ng1 31.d4+/-) 28.e4 (28.Kc2 b6 29.d4 Rg2+-) 28...Nc3 29.Re1 b6 30.d4 (30.Nb3+-) 30...Na4? (better 30...Nb5!? 31.Kd1 Nd4 32.cb6 ab6=+) 31.Nb3 (31.Kc2!? Rg2 32.Kb3 bc5+-) 31...bc5 32.dc5 Rgd8? (better 32...Rg2!? 33.Re2 Rg4+/-) 33.e5 Ke6 34.Re4 Nc3 35.Rg4 (35.Re3 Nb5+-) 35...h5 36.Rg6 Kd5 37.Kc2 Ne4 38.f3 Nd6 39.ed6 (39.Rd6?! Ke5 40.Rh6 Rh8+=) 39...Rc5 40.Nc5 Kc5 41.Rg5 Kd6 42.Rh5 Rf8 43.Rh6 (43.Ra5 Kc6 44.Ra7 Rf3+-) 43...Kc7 44.Rh7 Kb6 45.h5 (45.a4 a5 46.h5 Rf3+-) 45...Rf3+/- 46.h6 (46.a4!?+/-) 46...Ra3+= 47.Rg7 Rh3 48.h7 Ka5?? (48...a5 49.Re7+=) 49.Kd2?? (better 49.Ra7!? Kb6 50.Rg7+-) 49...a6 (49...Kb6 50.Ke2=) 50.Ke2 (50.Rb7 Ka4+/-) 50...Ka4 (50...Kb5 51.Kf2+=) 51.Kf2+/- a5 52.Kg2 (52.Kg2 Rh6 53.Rf7+/-) 1-0. beatmeeasy (2000) - Sergey_61 (2050), lichess.org, 2021.

5.cd4 Bb4–/+ 6.Bc3 Bc3 7.Nc3 c6 8.e4 Qe7 9.Be2 de4–+ 10.d5 Qb4 11.Rc1 Bf5 12.dc6 Nc6 13.Kf1 Nge7 14.Nb5 0-0 15.Nc7 Rad8 16.Qc2 Rd2 17.Bc4 Kh8 18.Qb3 Qc5 (18...Qc5 19.Qe3 Qe3 20.fe3 Rc8–+) 0–1. Stoot – ChessNo1, ChessWorld.net, 2005.

5.Qd4 Nc6 6.Qe3 Qe7 7.Qf4 Qd6 8.Qh4 Bd7 9.Na3 0-0-0 10.Nb5 Qe6 11.Nf3 Qg4 12.Qg4 Bg4 13.0-0-0 Nge7 14.e3 Ng6 15.Be2 Nh4 16.Rhg1 Nf3 17.Bf3 Bf3 18.gf3 Kb8 19.f4 Rg8 20.Rg3 f5 21.Rh3 Rh8 22.Rg1 Rd7 23.Rg5 Rf7 24.Rhh5 Ne7 25.Kc2 h6 26.Rh4 hg5 27.Rh8 Ng6 28.Rg8 gf4 29.ef4 Nf4 30.Nd4 Ng6 31.Ne6+/– Kc8 32.c4 Kd7 33.cd5 Bb4 34.Rb8 b6 35.Rd8 Ke7+= 36.Rg8 Kd6= 37.Rg7 Rg7 38.Ng7 Kd5 39.Nf5 Ke4 40.Nd4 c5 41.Nc6 a5 42.Nb4 ab4 43.Bc1 b5 44.Kb3 Ne5 45.Be3 Nd3?? 46.Bc5+– Nc5 47.Kb4 Ne6 48.Kb5 Nd4 49.Kb6 Nf3 50.a4 Nh2 51.a5 Kd5 52.a6 Ng4 53.f3 Nf6 1–0. Comet B25 – EXchess 3.11, 2004.

5.Qd4 Nc6 6.Qe3 Be7 7.Nf3 Nh6 8.b5 Na5 9.Ba3 Nf5 10.Be7 Ne7 11.Qc5 a6 12.ba6 b6 13.Qd4 Ba6 14.Na3 0-0 15.Qg4 Qd6 16.Nc2 Qc6 17.Qb4 Rfe8 18.Ncd4 Qd7 19.e3 c5–+ 20.Qb6 Bf1 21.Kf1 cd4 22.Nd4 Nc4 23.Qb5 Qc7 24.Nb3 Qe5 25.Nd4 Reb8 26.Qd7 Rb2 27.Kg1 Nb6 28.Qg4 Raa2 29.Qd1 Rf2 30.Ra2 Ra2 31.Qe1 0–1. Comet B25 – Crafty 19.01, 2004.

5.Qd4 Nc6 6.Qe3 Be7 7.Nf3 Nh6 8.b5 Ng4 9.Qf4 Nce5 10.Nbd2 Bd6 11.Qd4 Be6 12.h3 Nf3 13.ef3 Ne5 14.f4 Ng6 15.f5 Bf5 16.Qd5 Bf4 17.Qd8 Rd8 18.0-0-0 Be6 19.c4 c6 20.bc6= bc6 21.g3 Bd2 22.Rd2 Kf7 23.Bd3 Rhe8 24.f4 Ne7 25.Bh7 Rd2= 26.Kd2 f5 27.g4 Bc4 28.Bd4 Rd8 29.Kc3 Ba2 30.Bf5 Nd5 31.Kb2 Nf4 32.Be3 Bd5 33.Ra1 Nh3 34.Ra7 Kg8 35.Kc3 Re8 36.Bd4 Bf7 37.Bh7 Kh7 38.Rf7 Kh6 39.Rg7 c5 40.Bf6 Re6 41.g5 Ng5 42.Rg5 Rf6 43.Rc5 Rd6 44.Kc4 Kg6 45.Re5 Rd1 46.Rb5 Kf6 47.Rh5 Ke6 48.Rh8 Ke5 49.Re8 ½–½. Comet B25 – Fritz 5.32, 2004.

5.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c6 5.c3).

5.Na3 Bd6 6.Nf3 Ne7 7.Be2 0-0 8.0-0 a5 9.b5 e4=+.

5.a4 Bf5 6.Ne2 Bd6 7.Ng3 Be6 8.Bd3 Nh6 9.0-0 a5=+.

5.b5 Qa5 A) 6.Qh5 g6 7.Qe2 Bf5 8.d4 a6 9.de5 ab5+=; B) 6.bc6 Nc6 (6...bc6 7.c4 Bb4 8.a3 Bd6 9.Bc3 Qd8=) 7.Qb3 Nge7 8.Nf3 Nf5 9.Na3 e4+=; C) 6.Qb3 Nd7 (6...Ne7 7.c4 Be6 8.Nc3 Nd7 9.d4 c5+=; 6...a6 7.bc6 bc6 8.c4 Nd7 9.Bc3 Qd8+=; 6...Bd6 7.c4 Ne7 8.Nc3 Qb4 9.bc6 bc6=; 6...Be6 7.bc6 Nc6 8.Qb7 Rb8 9.Qc6 Bd7+=) 7.c4 Nc5 8.Qc3 Qb6 9.d4 Na4+=; D) 6.Qe2 Bf5 (6...Bd7 7.a4 Bd6 8.c4 Ne7 9.Qh5 g6+=; 6...a6 7.c4 ab5 8.cd5 Ne7 9.e4 Nd7+=; 6...Nh6 7.Qh5 g6 8.Qe2 Bg4 9.f3 Bd7+=; 6...Bd6 7.c4 Ne7 8.Nc3 Be6 9.cd5 Nd5+=) 7.Nf3 Bd6 8.bc6 Nc6 9.Qb5 Qb5+=; E) 6.c4 Be6 (6...dc4 7.bc6 b5 8.Qh5 g6 9.Qf3 Qb6=; 6...Bf5 7.Bc3 Qc7 8.Nf3 Nd7 9.bc6 Qc6=; 6...Nd7 7.cd5 cd5 8.Bc3 Qc7 9.d4 Ne7=; 6...Bd6 7.Bc3 Qd8 8.d4 Ne7 9.de5 fe5=) 7.cd5 cd5 8.Bc3 Qc7 9.d4 Bd6+=.

5.b5 a6 6.bc6 (6.a4 Bf5 7.Nf3 ab5 8.Nh4 Be6 9.ab5 Ra1–/+; 6.ba6 Na6 7.Be2 Bd6 8.Ba3 Ne7 9.Bd6 Qd6+=; 6.Qa4 Bd6 (6...Ne7 7.Nf3 Bd7 8.bc6 Nbc6 9.d3 b5+=; 6...Bf5 7.Nf3 Ne7 8.bc6 Nbc6 9.Be2 Ng6+=) 7.Ba3 Ne7 8.Nf3 0-0 9.Bd6 Qd6+=) 6...Nc6 (6...bc6 7.d4 Nd7 8.Ba3 Ba3 9.Na3 Qa5+=) 7.a3 (7.Nf3 b5 8.a4 b4 9.d4 Bg4+=) 7...Be6 (7...Bd6 8.c4 Nge7 9.d4 dc4+=) 8.d4 (8.Nf3 Bd6 9.d3 Qb6+=) 8...Bd6 9.Nd2 Nge7 (9...Rc8–/+). Olechno – Martello, corr 3GMM–37, 1996.

5.b5 Bd6 A) 6.d4 Qa5 (6...a6 7.bc6 Nc6 8.de5 Be5 9.Nf3 Nge7+=; 6...Ne7 7.c4 0-0 8.c5 Bc7 9.Nf3 e4+=; 6...Bf5 7.Nf3 Ne7 8.c4 Bb1 9.Rb1 Qa5=; 6...Nh6 7.de5 fe5 8.c4 Bg4 9.Qb3 Qd7=) 7.Nd2 Ne7 8.Qh5 g6 9.Qe2 Be6+=; B) 6.Ba3 Ne7 (6...Ba3 7.Na3 Ne7 8.Qh5 g6 9.Qh4 0-0+=; 6...Bf5 7.Nf3 Ne7 8.Nh4 Ba3 9.Na3 Be6+=; 6...a6 7.Bd6 Qd6 8.ba6 Na6 9.d4 Ne7+=; 6...Bc7 7.Nf3 Bg4 8.Be2 f5 9.0-0 Nf6=) 7.Bd6 Qd6 8.Qh5 g6 9.Qe2 Bd7+=; C) 6.c4 Be6 (6...Bf5 7.bc6 bc6 8.d4 ed4 9.Bd4 Ne7+=; 6...Ne7 7.d4 ed4 8.Bd4 c5 9.Bc3 Be6=; 6...Nh6 7.bc6 bc6 8.cd5 cd5 9.Nc3 Qb6=; 6...dc4 7.Bc4 cb5 8.Bb5 Nc6 9.d4 ed4+=) 7.cd5 cd5 8.Nf3 Ne7 9.Be2 0-0+=.

5.b5 Bd7 6.d4 Bd6 (6...Nh6 7.de5 fe5 8.c4 Bb4 9.Bc3 Bg4=; 6...Qc7 7.de5 fe5 8.c4 Nf6 9.cd5 cd5=; 6...Bf5 7.de5 fe5 8.Nf3 Bg4 9.Nbd2 Nf6=; 6...Ne7 7.de5 fe5 8.c4 dc4 9.Bc4 Ng6=) 7.bc6 Bc6 8.Ba3 Ba3 9.Na3 Nh6=.

5.b5 Nd7 6.c4 Bd6 (6...Nb6 7.cd5 Nd5 8.Nc3 Be6 9.Nf3 Nge7=; 6...a6 7.cd5 ab5 8.Qc2 Nc5 9.dc6 bc6=; 6...Ne7 7.d4 a6 8.bc6 bc6 9.Nc3 Qa5=; 6...dc4 7.Bc4 cb5 8.Bb5 a6 9.Bc4 b5=) 7.Nc3 Nb6 8.bc6 dc4 9.cb7 Bb7=.

5.b5 Be6 A) 6.d4 Nh6 (6...Nd7 7.Nf3 e4 8.Nfd2 Rc8 9.bc6 Rc6=; 6...Qc7 7.Nf3 e4 8.Nfd2 Qd7 9.a4 a6=; 6...Bd6 7.de5 fe5 8.c4 Nf6 9.cd5 cd5+=; 6...Ne7 7.de5 fe5 8.Qh5 Ng6 9.Nf3 Nd7+=) 7.Ba3 Ba3 8.Na3 0-0 9.Nf3 a6+=; B) 6.Be2 cb5 (6...Bd6 7.Nf3 Ne7 8.a4 Qc7 9.Na3 0-0+=; 6...Qd7 7.a4 Nh6 8.d4 Nf7 9.Nf3 a6+=; 6...a6 7.bc6 Nc6 8.Bh5 g6 9.Be2 e4+=; 6...c5 7.d4 Nd7 8.de5 fe5 9.Nd2 Ngf6+=) 7.Bb5 Nc6 8.Nf3 Bd6 9.Ba3 Nge7+=; C) 6.Ba3 c5 (6...Ba3 7.Na3 Ne7 8.Nf3 0-0 9.Be2 cb5+=; 6...Ne7 7.d4 Qc7 8.Nf3 Nd7 9.de5 fe5+=; 6...Bd6 7.Bd6 Qd6 8.Qh5 g6 9.Qf3 Nd7+=; 6...Be7 7.d4 Nd7 8.bc6 bc6 9.Be2 Rb8+=) 7.d4 Nd7 8.Nf3 Bd6 9.de5 Ne5+=; D) 6.bc6 Nc6 (6...bc6 7.Ba3 Ba3 8.Na3 Ne7 9.Rb1 0-0+=) 7.Be2 Bd6 8.Bh5 g6 9.Be2 Nge7+=; E) 6.Nf3 Nd7 (6...a6 7.a4 Bg4 8.bc6 Nc6 9.Be2 Qc7+=; 6...Nh6 7.d4 e4 8.Nfd2 Nf5 9.Be2 cb5+=; 6...c5 7.d4 e4 8.Nfd2 c4 9.Be2 a6=; 6...Bd6 7.d4 e4 8.Nfd2 Ne7 9.Qb3 f5=) 7.Be2 Bd6 8.a4 Ne7 9.0-0 Qc7+=.

5.b5 Be7 6.d4 e4 (6...Nh6 7.de5 fe5 8.c4 Bb4 9.Bc3 Bg4=; 6...cb5 7.de5 a6 8.Bd3 Nd7 9.Qh5 Kf8=; 6...Qd6 7.de5 fe5 8.c4 Nf6 9.cd5 cd5=; 6...Bf5 7.Nf3 e4 8.Nfd2 a6 9.ba6 Na6=) 7.c4 Be6 8.cd5 Bd5 9.Nc3 Bb4=.

5.b5 Ne7 A) 6.Ba3 a6 (6...Bf5 7.Nf3 a6 8.bc6 Nbc6 9.Be2 e4+=; 6...Qc7 7.d4 Be6 8.Nf3 Nd7 9.de5 fe5+=; 6...Be6 7.d4 Nd7 8.Nf3 Qb6 9.de5 fe5+=; 6...Nd7 7.d4 a6 8.bc6 Nc6 9.Bf8 Nf8+=) 7.Qh5 g6 8.Qf3 Bg7 9.bc6 Nbc6+=; B) 6.d4 Be6 (6...Ng6 7.c4 cb5 8.cb5 Bf5 9.de5 fe5=; 6...Qb6 7.de5 fe5 8.a4 Be6 9.Qh5 Ng6=; 6...Nd7 7.c4 a6 8.bc6 bc6 9.Nc3 Qa5=; 6...Bf5 7.de5 fe5 8.c4 Qd6 9.cd5 cd5=) 7.de5 fe5 8.Qh5 Ng6 9.Nf3 Nd7+=; C) 6.Be2 Nf5 (6...Bd7 7.a4 a6 8.Ba3 b6 9.d4 Ng6+=; 6...cb5 7.Bb5 Nbc6 8.Nf3 Bg4 9.h3 Bf3+=; 6...Qc7 7.c4 Be6 8.d3 Nf5 9.cd5 cd5+=; 6...a6 7.bc6 Nec6 8.Nf3 Be7 9.Ba3 0-0+=) 7.d4 Be6 8.Nd2 Bd6 9.c4 dc4+=; D) 6.a4 a6 (6...Ng6 7.Be2 Nh4 8.Bf1 Nf5 9.d4 Be6+=; 6...Be6 7.Nf3 Nf5 8.d4 e4 9.Nfd2 a6+=; 6...Nf5 7.d4 Be6 8.Nf3 e4 9.Nfd2 a6+=; 6...Nd7 7.Be2 Nf5 8.Nf3 Bd6 9.d3 Qa5+=) 7.d4 Ng6 8.de5 fe5 9.Nf3 Bf5+=; E) 6.c4 Qb6 (6...cb5 7.cb5 Nf5 8.d4 Bb4 9.Bc3 Bc3=; 6...Nf5 7.cd5 cd5 8.d4 Bb4 9.Bc3 Bc3=; 6...Be6 7.c5 a6 8.b6 Ng6 9.d4 Qe7+=; 6...Nd7 7.d4 a6 8.bc6 bc6 9.Nc3 Qa5=) 7.cd5 Nd5 8.Qh5 g6 9.Qf3 Be6+=.

5.b5 Bf5 6.d4 ed4 (6...Qa5 7.Nf3 e4 8.Nfd2 Nd7 9.c4 cb5=; 6...Nh6 7.de5 fe5 8.Nf3 e4 9.Nd4 Bg4=; 6...Nd7 7.Nf3 Qa5 8.Nbd2 Bd6 9.Nh4 Be6=; 6...Bd6 7.Nf3 Ne7 8.c4 Bb1 9.Rb1 Qa5=) 7.cd4 Bd6 8.Nf3 Ne7 9.Be2 a6=.

5.b5 Nh6 A) 6.bc6 Nc6 (6...bc6 7.d4 Nd7 8.c4 Rb8 9.Bc3 a6+=) 7.Nf3 Nf5 8.Be2 Bd6 9.Qb3 Nfe7+=; B) 6.Be2 Bd6 (6...a6 7.bc6 Nc6 8.Nf3 Be7 9.0-0 0-0=; 6...Be7 7.d4 0-0 8.de5 fe5 9.c4 Be6+=; 6...Nf5 7.d4 Be6 8.Nf3 Bd6 9.Qb3 Qe7+=; 6...cb5 7.Bb5 Nc6 8.Nf3 Bg4 9.h3 Bh5+=) 7.d4 Be6 8.Ba3 0-0 9.Bd6 Qd6+=; C) 6.Nf3 e4 (6...a6 7.bc6 Nc6 8.Be2 Be7 9.0-0 0-0=; 6...Be7 7.c4 Bg4 8.cd5 cd5 9.Be2 Qd7=; 6...Nf5 7.c4 dc4 8.Bc4 Nd6 9.bc6 Nc6+=; 6...Bd6 7.bc6 bc6 8.c4 0-0 9.cd5 cd5+=) 7.Nd4 c5 8.Ne2 c4 9.Nf4 Nf7+=; D) 6.d4 Bg4 (6...Bd6 7.de5 fe5 8.c4 Bg4 9.Qb3 Qd7=; 6...Bf5 7.de5 fe5 8.Nf3 e4 9.Nd4 Bg4=; 6...Be6 7.Nd2 Nf7 8.de5 fe5 9.Ngf3 Bd6+=; 6...Qb6 7.de5 fe5 8.c4 Bg4 9.Be2 Be2=) 7.Qd2 Be6 8.Be2 a6 9.de5 fe5+=; E) 6.c4 Bf5 (6...Nf5 7.cd5 cd5 8.d4 Bb4 9.Bc3 Bc3=; 6...Bd6 7.bc6 bc6 8.cd5 cd5 9.Nc3 Qb6=; 6...Be6 7.cd5 cd5 8.d4 Bd6 9.de5 fe5=; 6...Qb6 7.cd5 cd5 8.Nc3 Be6 9.Rc1 Nd7=) 7.Nf3 a6 8.bc6 Nc6 9.d4 Bb4+=.

5.d3 Be6 6.Nf3 a5 7.a3 Bd6 8.Be2 Ne7 9.Nbd2 0-0=+.

5.Bd3 Nh6 6.a3 Bd6 7.Qh5 Nf7 8.c4 g6 9.Qh4 a5 =+.

5.d4 Bd6 6.a3 a5 7.de5 fe5 8.c4 Nf6 9.c5 Bc7 =+.

5.Be2 Nh6 6.Nf3 Bd6 7.d3 0-0 8.0-0 Be6 9.Qb3 Na6 =+.

5.Ne2 a5 6.a3 Bd6 7.Ng3 Be6 8.Be2 Ne7 9.0-0 0-0 =+.

5.Nf3 Bg4 6.h3 Be6 7.Be2 Bd6 8.0-0 Ne7 9.d3 a5 =+.

5.Qh5 g6 6.Qd1 Bd6 7.Be2 Ne7 8.d3 0-0 9.Nf3 Qb6 =.

5.Bb5 a6 6.Bc6 bc6 7.d4 ed4 8.Qd4 Bd6 9.Nf3 Ne7 10.0-0 0-0 11.Rd1 Rb8 12.Qa7 Rb6 13.a4 c5 14.bc5 Rb7 15.Qa8=+ Rb2 16.cd6 Qd6 17.Rd2 Qb6–+ 18.Na3 Rd2 19.Nd2 Qb2 20.Rd1 Qa3 21.Qa7 Qa4 22.Rb1 Qc2 23.Qd4 0–1. Comet B50 – Crafty 19.01, 2004.

5.Bb5= Bd7 6.Qe2 a6 7.Ba4 Nge7 8.Bb3 Bf5 9.a4 Be4 10.Nf3= Bf3 11.Qf3 a5 12.b5 e4 13.Qg3 Ne5 14.0-0 Nd3 15.Ba3 c5 16.c4 dc4 17.Bc4 Ne5 18.Be6 Qd6 19.Bb3 Nf5 20.Qh3 Ne7 21.Rd1 f5 22.g3 Nf3 23.Kh1 Qf6 24.Ra2=+ Ng6 25.Rc2 b6 26.Bb2 Nge5= 27.Nc3 Nd3 28.Nd5 Nf2 29.Kg2= Nh3 30.Bf6 Rb8 31.Nc7 Kd7=+ 32.Na6 Rc8 33.Bb2 Nhg5=+ 34.Rdc1 Ke8 35.d4?? ed3–+ 36.Rc4 Ke7 37.Rf4 Nd2 38.Bd5–/+ Nde4 39.Rf5 d2 40.Rcf1 Kd7 41.h4 Ng3? 42.Kg3+– Bd6 43.Kg4 Ne6 44.Rf7 Be7 45.e4 Rhf8+/– 46.Bc6 Kd8 47.Rf8 Bf8 48.Bc3 h5 49.Kh5 Nf4 50.Kg4 Bd6 51.Bd2 Nd3 52.Bg5 Be7 53.Rf8# 1–0. NN – COMP, 1993.

5.a3 A) 5...Nc6 A1) 6.d4 ed3 (6...Be6 7.Nd2 Nh6 8.c4 a5 9.b5 Ne7+=; 6...f5 7.c4 Nf6 8.Nh3 a5 9.b5 Ne7+=; 6...Nge7 7.c4 Be6 8.Nc3 f5 9.b5 Na5=; 6...Nce7 7.c4 a5 8.Qa4 Bd7 9.b5 c6=) 7.Nf3 Bg4 8.Bd3 Ne5 9.Be2 Nc4=; A2) 6.d3 Bf5 (6...ed3 7.Nf3 Bg4 8.Bd3 Ne5 9.Be2 Nc4=; 6...Be6 7.de4 de4 8.Nd2 f5 9.c4 Qh4=; 6...f5 7.b5 Nce7 8.de4 de4 9.Qd8 Kd8=; 6...Nh6 7.de4 de4 8.Qd8 Nd8 9.Nd2 f5=) 7.de4 de4 8.Nd2 Ne5 9.Qa4 c6=; A3) 6.Bb5 Qd6 (6...Nge7 7.c4 Be6 8.cd5 Qd5 9.Nc3 Qg5=) 7.d4 a6 8.Be2 f5 9.Bh5 g6=; A4) 6.c4 Be6 (6...Bf5 7.Ne2 dc4 8.Ng3 Be6 9.Ne4 Nh6+=; 6...dc4 7.Bc4 Bf5 8.Qc2 a5 9.b5 Ne5+=) 7.cd5 Bd5 8.Nc3 a5 9.b5 Ne5=; B) 5...f5 B1) 6.d3 Nf6 (6...Nc6 7.b5 Nce7 8.Nd2 a6 9.ba6 ba6+=) 7.de4 fe4 8.c4 Bg4 9.Be2 Be2=; B2) 6.Nh3 a5 (6...Nf6 7.c4 a5 8.Qa4 Bd7 9.b5 c6=) 7.Nf4 Nf6 8.d3 Bd6 9.Be2 Be5=; B3) 6.Be2 Qg5 7.Bf1 Bd6 8.d3 Nf6 9.c4 dc4=; B4) 6.c4 dc4 (6...a5 7.cd5 Qd5 8.b5 Be6 9.Nh3 Qd8+=; 6...Nf6 7.cd5 Nd5 8.d3 Qh4 9.g3 Qe7+=; 6...Be6 7.cd5 Qd5 8.Nh3 Qd7 9.Ng5 a5+=; 6...Ne7 7.Qh5 Ng6 8.Nh3 Qd6 9.d3 a5+=) 7.Bc4 Qg5 8.g3 Nf6 9.d3 a5=; C) 5...c6 C1) 6.c4 Be6 (6...a5 7.b5 cb5 8.Nc3 Bf5 9.Nd5 Nc6=; 6...Bf5 7.cd5 cd5 8.Ne2 Nc6 9.Ng3 Bg6=; 6...Nh6 7.cd5 cd5 8.Nc3 Bf5 9.Qa4 Nc6+=; 6...dc4 7.Bc4 Bf5 8.Ne2 b5 9.Nd4 Qd7=) 7.cd5 cd5 8.Bb5 Nc6 9.Ne2 a6=; C2) 6.d3 Nd7 (6...Bf5 7.de4 Be4 8.c4 a5 9.b5 cb5+=; 6...Qe7 7.Nd2 Bf5 8.de4 de4 9.Ne2 Nd7+=; 6...Qc7 7.Nd2 ed3 8.Bd3 a5 9.Ngf3 Bd6+=; 6...Be7 7.de4 de4 8.Qd8 Bd8 9.Nd2 f5+=) 7.de4 de4 8.Ne2 f5 9.Nf4 Qf6+=; D) 5...Bf5 D1) 6.d3 Nc6 7.de4 de4 8.Nd2 Ne5 9.Qa4 c6=; D2) 6.d4 Be6 (6...a5 7.b5 Nd7 8.c4 dc4 9.Nd2 Ne7=; 6...Nd7 7.c4 dc4 8.Bc4 Nb6 9.Ba2 a5=; 6...Ne7 7.c4 Nd7 8.Nc3 Nb6 9.c5 Nbc8=; 6...Bd6 7.c4 c6 8.cd5 cd5 9.Nc3 Ne7=) 7.c4 Ne7 8.Ne2 dc4 9.Nf4 Bf7=; D3) 6.c4 Ne7 (6...Nc6 7.Ne2 dc4 8.Ng3 Be6 9.Ne4 Nh6+=; 6...dc4 7.Bc4 Bd6 8.Qc2 Qe7 9.Nc3 a5+=) 7.Nc3 a5 8.b5 dc4 9.Bc4 Nd7=; D4) 6.Qb3 Ne7 (6...Nc6 7.c4 Nge7 8.d4 ed3 9.Bd3 Qd7=; 6...a5 7.ba5 Ra7 8.c4 dc4 9.Bc4 Nh6=; 6...Qd7 7.c4 Ne7 8.Nc3 c6 9.f3 a6=; 6...Nh6 7.c4 dc4 8.Bc4 a5 9.ba5 Ra7=) 7.c4 a5 8.ba5 Nbc6 9.cd5 Nd5+=; D5) 6.Ne2 Bd6 (6...Qd7 7.Nd4 Bg4 8.f3 Bh5 9.Be2 Nc6=; 6...Nd7 7.Nd4 Nh6 8.Nf5 Nf5 9.Qg4 Ne7+=; 6...Ne7 7.Nd4 Nbc6 8.Nf5 Nf5 9.d3 Ne5+=; 6...Bg4 7.d3 Nc6 8.de4 de4 9.Qc2 f5+=) 7.Nd4 Bg6 8.c4 dc4 9.Bc4 Nd7=; E) 5...Be6 E1) 6.d3 Nc6 (6...Nd7 7.de4 de4 8.Nd2 f5 9.Ne2 Qf6=; 6...Qd7 7.Nd2 ed3 8.Bd3 Nc6 9.Ngf3 0-0-0=; 6...Qe7 7.Nd2 ed3 8.Bd3 Nd7 9.c4 Ne5=; 6...Qd6 7.Nd2 ed3 8.Bd3 Nc6 9.Ngf3 0-0-0+=) 7.de4 de4 8.Nd2 f5 9.c4 Qh4=; E2) 6.d4 c6 (6...Qd7 7.c4 Ne7 8.Nc3 a5 9.ba5 Ra5=) 7.c4 dc4 8.Nd2 a5 9.b5 f5=; E3) 6.Nh3 Bd6 7.d3 Qd7 8.Nf4 Bg4 9.Qb3 Bf4=; E4) 6.Ne2 Nh6 (6...Bd6 7.Nd4 Qd7 8.Ne6 Qe6 9.c4 Ne7=; 6...Qd7 7.Nd4 Bd6 8.Ne6 Qe6 9.c4 Ne7=; 6...Bg4 7.d3 Nc6 8.de4 de4 9.Qc2 f5+=; 6...Ne7 7.Nd4 Bf7 8.d3 Nbc6 9.Qa4 a5=) 7.Nd4 Bg4 8.f3 ef3 9.gf3 Bd7=; F) 5...Nh6 F1) 6.d3 Bf5 (6...Nc6 7.de4 de4 8.Qd8 Kd8 9.Nd2 Bf5=; 6...Bg4 7.Qc2 Bf5 8.c4 c6 9.cd5 cd5+=; 6...Qe7 7.c4 dc4 8.de4 Qe4 9.Nd2 Qg6+=; 6...Nf7 7.de4 de4 8.Qd8 Nd8 9.Nd2 f5=) 7.de4 de4 8.Qd8 Kd8 9.Ne2 Nc6=; F2) 6.c4 Bf5 (6...a5 7.Qa4 Bd7 8.b5 dc4 9.Qc4 f5+=; 6...dc4 7.Qh5 Nf7 8.Bc4 Qe7 9.Nc3 Be6+/–; 6...c6 7.cd5 cd5 8.Nc3 Bf5 9.Qa4 Nc6+=; 6...Be6 7.cd5 Bd5 8.Nc3 Nc6 9.Qh5 Bf7+=) 7.cd5 Qd5 8.Nc3 Qe6 9.Nge2 Nc6+=; G) 5...a6 6.d3 Be7 (6...Bf5 7.de4 Be4 8.c4 c5 9.bc5 dc4+=; 6...Nc6 7.de4 de4 8.Qd8 Kd8 9.Nd2 Bf5+=) 7.de4 de4 8.Qd8 Bd8 9.c4 a5+=; H) 5...Ne7 H1) 6.d4 c6 (6...Be6 7.c4 a5 8.b5 dc4 9.Nd2 f5=; 6...Bf5 7.c4 Nd7 8.Nc3 Nb6 9.c5 Nd7+=; 6...a6 7.c4 Be6 8.Ne2 dc4 9.Nd2 Ng6=; 6...a5 7.b5 Be6 8.Nd2 c6 9.c4 dc4=) 7.c4 Be6 8.Nc3 a5 9.b5 dc4=; H2) 6.c4 Bf5 7.Nc3 a5 8.b5 dc4 9.Bc4 Nd7=; H3) 6.Qc2 Bf5 (6...a5 7.d3 Bf5 8.Nd2 ed3 9.Bd3 Bd3=; 6...Be6 7.d3 ed3 8.Bd3 Nbc6 9.Nf3 Qd6+=; 6...f5 7.d3 a5 8.Nd2 Bd7 9.Be2 Ng6=; 6...Qd6 7.c4 a5 8.b5 f5 9.c5 Qd8+=) 7.d3 Nd7 8.c4 c6 9.Nd2 ed3=; H4) 6.d3 Nbc6 (6...Nec6 7.de4 de4 8.Qd8 Nd8 9.Nd2 f5=; 6...Bf5 7.de4 Be4 8.c4 a5 9.Nc3 ab4+=; 6...ed3 7.Bd3 Nbc6 8.Nf3 Bg4 9.Nbd2 Ne5=; 6...Bd7 7.c4 dc4 8.de4 b5 9.Qh5 g6=) 7.de4 de4 8.Nd2 Bf5 9.Qa4 Qd7=.

5.d3= a5 6.de4 de4 7.Qd8 Kd8 8.b5 Nd7 9.Nd2 Nc5=.

5.d3= Nc6 6.de4 (6.b5 Ne5 7.d4 Nc4 8.Bc4 dc4 9.Ba3 Ne7=) 6...de4 7.Qd8 Nd8 8.Nd2 f5 9.Ne2 Bd7=.

5.d3= Qd6 A) 6.de4 de4 7.Nd2 f5 8.Ne2 Nc6 9.Nf4 Bd7=; B) 6.Ne2 f5 (6...Nc6 7.de4 de4 8.Nd2 f5 9.Nf4 Bd7=; 6...Bg4 7.de4 de4 8.Qc2 f5 9.Ng3 Qg6+=; 6...a5 7.de4 de4 8.Qd6 Bd6 9.Nd2 f5=; 6...ed3 7.Nf4 Bf5 8.Bd3 Bd3 9.Qd3 c6=) 7.Nf4 Nf6 8.Be2 Be7 9.0-0 Bd7=; C) 6.Nh3 Bf5 (6...Nc6 7.de4 de4 8.Nd2 Bf5 9.g4 Bg6=) 7.de4 de4 8.Nd2 Qd7 9.Nf4 a5=; D) 6.Na3 a5 (6...Qe5 7.de4 de4 8.Ne2 Nc6 9.Nc4 Qe7+=; 6...a6 7.de4 de4 8.Bc4 Qd1 9.Rd1 Nc6=; 6...Bf5 7.Nb5 Qb6 8.de4 Be4 9.f3 Bg6+=; 6...Bd7 7.de4 de4 8.Nb5 Qb6 9.a4 a6+=) 7.Nb5 Qe5 8.ba5 c6 9.Nd4 Ra5=; E) 6.Nd2 f5 (6...Bf5 7.de4 de4 8.Ne2 Qe5 9.Qc2 Bg6+/–) 7.de4 de4 8.Qh5 g6 9.Qh3 Nc6=.

5.d3= Qd7 A) 6.de4 de4 7.Nd2 f5 8.Qh5 g6 9.Qe2 Bg7=; B) 6.a3 a5 (6...Qc6 7.Nd2 Ne7 8.de4 de4 9.Qh5 g6+=; 6...Qg4 7.Qg4 Bg4 8.de4 de4 9.Ne2 Bd7+=; 6...Nc6 7.de4 de4 8.Nd2 f5 9.Bb5 a6=; 6...f5 7.c4 dc4 8.de4 Qd1 9.Kd1 fe4=) 7.de4 de4 8.Nd2 f5 9.Nb3 ab4=; C) 6.Ne2 f5 (6...a5 7.ba5 Ra5 8.Nd2 ed3 9.Nf4 Qg4=; 6...Nc6 7.de4 de4 8.Nd2 f5 9.Nf4 Nf6=; 6...ed3 7.Nf4 Bd6 8.Bd3 Bf4 9.ef4 Qe6+=; 6...Bd6 7.de4 de4 8.Nd4 a5 9.Nd2 f5+=) 7.Nf4 Nf6 8.Be2 a5 9.ba5 Bd6=; D) 6.Nd2 f5 (6...a5 7.ba5 ed3 8.Bd3 Na6 9.c4 Nc5=; 6...Qc6 7.de4 de4 8.b5 Qd5 9.Bc4 Qe5+=; 6...ed3 7.Bd3 Bd6 8.Ngf3 Ne7 9.0-0 0-0+=) 7.de4 de4 8.Qh5 g6 9.Qe2 Bg7=.

5.d3= f5 A) 6.a3 Nf6 (6...Nc6 7.b5 Nce7 8.de4 de4 9.Qd8 Kd8=; 6...Ne7 7.de4 fe4 8.c4 a5 9.b5 Bf5+=) 7.de4 fe4 8.c4 a5 9.b5 Be6=; B) 6.de4 fe4 7.Qh5 Ke7 8.c4 c6 9.cd5 Nf6=.

5.d3= Bf5 6.de4 (6.Ne2 Nc6 (6...Qd7 7.Ng3 Nh6 8.de4 Be4 9.Ne4 de4+=; 6...Bd6 7.Nd4 Qd7 8.Nf5 Qf5 9.Nd2 ed3+=; 6...a5 7.Nd4 Qd7 8.Nf5 Qf5 9.de4 de4+=; 6...Nh6 7.Ng3 Qd7 8.de4 Be4 9.Ne4 de4+=) 7.Ng3 Bg6 8.de4 de4 9.Nd2 f5=) 6...Be4 (6...de4 7.Qd8 Kd8 8.Ne2 Bd7 9.a3 Kc8+=) 7.Nd2 Nc6 (7...Bf5 8.Ngf3= Bd6 9.Nd4 Bg6+=) 8.Ne4+= de4 9.Bb5 (9.Qa4 f5+=) 9...Qd1 10.Rd1 Rd8 11.Rd8 Kd8 12.Bc6 bc6 13.Ne2 Ne7 14.Ng3 f5 15.Ke2 Kc8 16.Rd1 g6 17.c4 Rg8 18.Bf6 (18.a4 Bg7 19.Bg7 Rg7+/–) 18...h6 (18...c5 19.b5+/– (worse is 19.bc5 Nc6+=)) 19.f3 ef3 20.gf3 c5 21.b5 c6 22.Be7 (22.a4!?+–) 22...Be7+/– 23.bc6 Bd6?? (better is 23...Rd8 24.Rb1 Bf6+/–) 24.Rd6+– Kc7 25.Re6 1–0. Wall,Bill – CBC, Microsoft Gaming Zone, 1999.

5.d4 A) 5...Nh6 A1) 6.a3 Bg4 (6...Be6 7.c4 dc4 8.Qc2 f5 9.Bc4 Bc4=; 6...a5 7.Qa4 Nd7 8.c4 c6 9.b5 Nb6=) 7.Qa4 c6 8.c4 dc4 9.Qc2 b5=; A2) 6.Qb3 Nf5 (6...Nc6 7.Bb5 a6 8.Bc6 bc6 9.c4 a5=) 7.c4 dc4 8.Bc4 Nd6 9.Nc3 Nc4=; A3) 6.Ne2 Bd6 7.Nf4 c6 8.Qh5 Nf7 9.a3 Qc7+=; A4) 6.c4 Bb4 7.Bc3 Be7 8.Qh5 Nf7 9.Qd5 Qd5=; A5) 6.Nd2 Be6 (6...Nf5 7.Qb3 Nc6 8.Ne2 Nce7 9.c4 dc4=; 6...Bg4 7.Qb3 Be7 8.c4 Be6 9.cd5 Qd5=; 6...Be7 7.Qb3 Qd6 8.c4 Be6 9.a3 f5=; 6...a5 7.b5 Be6 8.c4 Bb4 9.cd5 Bd5=) 7.Qb3 Qd7 8.c4 Nf7 9.Rc1 Nc6=; B) 5...Bf5 6.a3 a5 (6...Be6 7.c4 Ne7 8.Ne2 dc4 9.Nd2 a5=; 6...Nd7 7.c4 dc4 8.Bc4 Nb6 9.Ba2 a5=; 6...Ne7 7.c4 Nd7 8.Nc3 Nb6 9.c5 Nd7+=; 6...Bd6 7.c4 dc4 8.Nc3 a5 9.b5 Nd7+=) 7.b5 Nd7 8.c4 dc4 9.Nd2 Ne7=; C) 5...c6 C1) 6.b5 a6 (6...Be6 7.Ne2 Qd7 8.Nf4 Bg4 9.Qb3 g5=) 7.ba6 b6 8.c4 Ba6 9.Nh3 dc4+=; C2) 6.a3 Be6 (6...Bd6 7.c4 Ne7 8.Nc3 0-0 9.cd5 cd5=) 7.c4 dc4 8.Nd2 a5 9.b5 f5=; C3) 6.Qb3 a5 7.b5 a4 8.Qd1 Qa5 9.a3 Bd6+=; C4) 6.Ba3 Be6 7.Ne2 Bd6 8.Nf4 Bf4 9.ef4 Qc7=; C5) 6.Nd2 Nh6 (6...Bd6 7.b5 Ne7 8.c4 0-0 9.Qb3 f5=) 7.a3 Bd6 8.c4 Be6 9.cd5 cd5=.

5.Ne2 A) 5...Nd7 A1) 6.d3 ed3 7.Nf4 Ne5 8.Bd3 g5 9.Ne2 Bd6=; A2) 6.d4 Nb6 7.Nf4 Nh6 8.Be2 Bd6 9.a4 a5=; A3) 6.Nd4 Ne5 7.Be2 a5 8.Qa4 Bd7 9.Qb3 c6=; A4) 6.Nf4 Ne5 7.c4 Bg4 8.Qa4 Bd7 9.Qa5 c6=; B) 5...Nh6 B1) 6.d3 ed3 (6...Bd6 7.de4 de4 8.Nd2 Qe7 9.Qc2 f5=; 6...Nc6 7.de4 de4 8.Qd8 Nd8 9.Nd2 f5+=) 7.Nf4 Bg4 8.f3 Bf5 9.Bd3 c6=; B2) 6.Nd4 a5 (6...Nf5 7.d3 Nd4 8.ed4 Bf5 9.de4 Be4=) 7.b5 c5 8.bc6 bc6 9.d3 a4=; C) 5...Bd6 C1) 6.Nd4 c6 (6...Ne7 7.d3 f5 8.Be2 0-0 9.0-0 a5=; 6...f5 7.c4 Nf6 8.Qb3 c6 9.c5 Be7=) 7.d3 f5 8.Be2 Nf6 9.0-0 Qc7+=; C2) 6.d3 Nc6 (6...f5 7.de4 de4 8.Nd2 Nc6 9.Nc4 Nf6=; 6...ed3 7.Nd4 Ne7 8.Bd3 0-0 9.0-0 Nbc6=; 6...Nh6 7.de4 de4 8.Nd2 Qe7 9.Qc2 f5=; 6...Ne7 7.de4 de4 8.Nd2 f5 9.Nc4 Nbc6+=) 7.de4 de4 8.Nd2 Qe7 9.Nc4 Bg4=; D) 5...f5 D1) 6.d3 a5 (6...Bd6 7.de4 de4 8.Nd2 Nc6 9.Nc4 Nf6=; 6...Nf6 7.Nf4 a5 8.b5 Bd6 9.Be2 0-0=; 6...Be7 7.Nf4 Nf6 8.Be2 0-0 9.0-0 Bd6=; 6...Nc6 7.Nf4 Nf6 8.Be2 Bd6 9.0-0 0-0=) 7.de4 fe4 8.ba5 Nf6 9.c4 Bb4=; D2) 6.Nd4 Nf6 (6...Bd6 7.c4 Nf6 8.Qb3 c6 9.Be2 dc4=) 7.Be2 Bd6 8.0-0 0-0 9.f4 a5+=; D3) 6.Ng3 a5 (6...Bd6 7.Nh5 Qe7 8.c4 Be5 9.Qb3 Nf6=; 6...Nf6 7.d3 a5 8.b5 a4 9.a3 Be6=) 7.Qa4 Bd7 8.b5 Nf6 9.c4 Be6=; D4) 6.Nf4 Nf6 7.d3 a5 8.b5 a4 9.a3 Bd6=; E) 5...a5 E1) 6.Nf4 Ne7 (6...Bf5 7.b5 a4 8.c4 a3 9.Bc3 Bd6+=; 6...g6 7.b5 a4 8.c4 a3 9.Bc3 Bf5+=) 7.d3 Bf5 8.de4 de4 9.Qd8 Kd8=; E2) 6.ba5 Ne7 (6...Nh6 7.d3 ed3 8.Nf4 Ra5 9.Bd3 Nc6=; 6...Bd6 7.Nd4 Ne7 8.c4 c5 9.Nb5 0-0+=; 6...Ra5 7.d3 f5 8.de4 fe4 9.c4 Nf6=; 6...Nc6 7.Nf4 Nge7 8.d3 Ra5 9.de4 de4=) 7.d3 ed3 8.Nf4 Nbc6 9.Bd3 Ne5=; E3) 6.a3 Nc6 (6...Nd7 7.c4 Bd6 8.cd5 ab4 9.ab4 Ra1=; 6...ab4 7.cb4 Bg4 8.d3 ed3 9.Qd3 Ne7=; 6...Bd6 7.d3 Nc6 8.de4 de4 9.Nd2 Bf5+=; 6...Bg4 7.h3 Bh5 8.d3 f5 9.g4 fg4=) 7.Nf4 Ne5 8.c4 Bg4 9.Qa4 Bd7=; E4) 6.b5 Bd6 (6...Nd7 7.c4 Nb6 8.cd5 Nd5 9.Nbc3 Nb4+=; 6...Bg4 7.h3 Bh5 8.Qc2 f5 9.Ng3 Bg6=; 6...Nh6 7.d3 ed3 8.Nf4 Bg4 9.Qd3 g5=; 6...Ne7 7.d3 ed3 8.Nd4 c5 9.bc6 bc6=) 7.d3 ed3 8.Ng3 Nd7 9.Qh5 g6=; F) 5...c6 F1) 6.d3 f5 7.Nf4 Nf6 8.Be2 Bd6 9.0-0 0-0=; F2) 6.Nd4 Bd6 (6...a5 7.ba5 Qa5 8.d3 Qb6 9.Nb3 Bf5=) 7.d3 f5 8.Be2 Nf6 9.0-0 0-0+=; F3) 6.Nf4 Nh6 (6...Bf5 7.d3 Bd6 8.Nd2 ed3 9.Bd3 Bd3=) 7.d3 g5 8.Nh5 Bg4 9.Be2 Be2=; F4) 6.Ng3 Nd7 (6...Bd6 7.d3 f5 8.a3 Nf6 9.c4 Bg3=; 6...f5 7.c4 Nf6 8.Nh5 Nbd7 9.cd5 cd5=; 6...a5 7.d3 ab4 8.de4 Be6 9.ed5 Qd5=; 6...Nh6 7.d3 Bg4 8.Qc2 ed3 9.Bd3 Bd6+=) 7.d3 ed3 8.Bd3 Ne5 9.Be2 a5=; G) 5...Nc6 G1) 6.d3 ed3 7.Nf4 Ne5 8.Bd3 g5 9.Ne2 Bd6=; G2) 6.d4 ed3 (6...Nh6 7.Qb3 a5 8.Nf4 Ne7 9.c4 dc4=) 7.Ng3 a5 8.b5 Ne5 9.Bd3 Bg4=; G3) 6.Nf4 Bf5 (6...Ne5 7.c4 Bg4 8.Qa4 Bd7 9.Qa5 c6=; 6...Nge7 7.d3 Bf5 8.Nd2 Qd7 9.Nb3 0-0-0=) 7.Bb5 Qd6 8.0-0 0-0-0 9.Qa4 Kb8=.

5.Nh3 A) 5...Nh6 A1) 6.Qe2 c6 7.a3 Bg4 8.f3 Bh3 9.gh3 Nd7–/+; A2) 6.Nf4 c6 (6...g5 7.Nh5 Nc6 8.Be2 Ne5 9.0-0 Bg4=; 6...Bf5 7.d3 Nc6 8.Nd2 g5 9.de4 de4=; 6...Bg4 7.Be2 Be2 8.Qe2 c6 9.0-0 Qe7=; 6...Nf7 7.d3 a5 8.de4 de4 9.Qd8 Nd8=) 7.d3 g5 8.Nh5 Bg4 9.Be2 Be2=; A3) 6.d4 Bg4 (6...a5 7.ba5 Ra5 8.c4 Bg4 9.Qb3 Bh3=; 6...c6) 7.Qa4 Bd7 8.Qd1 c6 9.Nf4 Bd6+=; A4) 6.Ng1 a5 7.a3 Bg4 8.Be2 Qd7 9.d3 ed3=; A5) 6.d3 Bg4 7.Qa4 c6 8.Nf4 Bd6 9.de4 de4=; B) 5...Bf5 B1) 6.Nf4 Qd6 (6...Qd7 7.Be2 Nc6 8.d4 g5 9.Nh5 0-0-0=; 6...Ne7 7.d3 Nbc6 8.Nd2 Qd7 9.de4 de4=; 6...a5 7.b5 Ne7 8.c4 dc4 9.Bc4 Ng6=; 6...c6 7.d3 Bd6 8.Nd2 ed3 9.Bd3 Bd3=) 7.d3 Nc6 8.de4 de4 9.Nd2 0-0-0+=; B2) 6.Na3 a5 7.Nc2 Bd6 8.Nd4 Ne7 9.Nf5 Nf5+=; B3) 6.d4 Bd6 7.Nf4 c6 8.a3 Qc7 9.c4 Bf4+=; B4) 6.a4 a5 7.b5 Nd7 8.c4 Nb6 9.cd5 Nd5+=; B5) 6.d3 Bd6 7.Nf4 Bf4 8.ef4 Qe7 9.de4 Qe4=.

5.d3 Bd6 6.Nd2 Ne7 7.Ne2 0-0 8.h4 c5 9.h5 cb4 10.h6 g6 11.cb4 Bb4 12.a3 Bd6 13.g3 Qc7 14.Rc1 Nbc6 15.Bg2 Qb6 16.Rc2 Rac8 17.0-0 Na5 18.Nc3 Rc7 19.Qa1 Rfc8 20.Rfc1 Nb3 21.Nb3 Qb3 22.Qb1? d4 23.ed4 ed4 24.Ne4 Rc2 25.Rc2 Ba3 26.Rc8? Nc8?? 27.Nf6+/– Kf7 28.Nd5?? Qb2–+ 29.Qb2 Bb2 30.Nf4 b5 31.Bb7 a5 32.Kf1 a4 33.Ke1 a3 34.Ne2 a2 (34...a2 35.f4 a1Q 36.Kf2 Nd6–+) 0–1. dtpwaldi – wybitnytalent (1720), internet, 2011.

5.Bd3 Bd6 6.Bc2 a5 7.a3 Ne7 8.d4 0-0 9.Nf3 ab4 10.ab4 Ra1 11.Ba1 e4 12.Ng1 Nd7 13.Ne2 f5 14.Ng3 f4 15.ef4 Rf4 16.Qd2 Bf7 17.Bb2 Nf6 18.Bc1 Qe8 19.Qe3? Ng4–/+ 20.Qe2 Rf2 21.Qg4 Rc2 22.0-0 Ra2 23.Bh6 Ng6 24.Nf5 Bf8 25.Be3 Be6 26.Nd2 Qc6 27.Nb1 Bd6 28.Nh6–/+ Kh8 29.Nf7 Bf7 30.Rf7 Kg8 31.Rd7? Be7 32.Nd2 Qc3 33.Qe6 Kh8 34.Nf1 Qc2 35.Bd2–/+ Bb4?? 36.Rf7 Nf8?? 37.Qg4 g6 38.Bb4 Ne6 39.Qh3 h5 40.Qg3 g5 41.Kh1?? Kg8 42.Re7 Qc4 43.Re8 Kh7 44.Re7 Kg8 45.h4?? Qf1–+ 46.Kh2 Qf6 47.hg5 Qd4?? 48.Bc3 Qf2–/+ 49.Qf2 Rf2 50.Re6 c5 51.Kg3 Rc2 52.Be5 b5?? 53.g6+– h4 54.Kh3 Rf2 55.g7 Kf7 56.Re8!! Ke8 57.g8Q Ke7 58.Qh7 Ke6 59.Qc7 Rd2 60.Qd6 Kf7 61.Qd7 Kf8 62.Bd6 Kg8 63.Qe6 Kh7 64.Qf7 Kh6 65.Bf4# 1–0. NN – SuperConstellation4, 1987.

5.Nf3 Bd6 6.d3 Nh6 (6...Ne7 7.Be2+=) 7.h3 (7.Be2 Nd7+=) 7...Nd7 8.Nbd2 (8.Be2 0-0+=) 8...c5 (8...a5 9.b5+=) 9.a3 (9.bc5 Nc5 10.d4 Nd7=) 9...0-0 10.e4 (10.Be2 b5+=) 10...de4 (10...a5 11.bc5 Nc5 12.Rb1+=) 11.Ne4 (11.de4 Nb6+=) 11...Be7 12.d4 (12.Be2 Nf7+=) 12...ed4–/+ 13.cd4 White is in command (13.Nc5 Nc5 14.Nd4–/+) 13...c4 (better is 13...cb4 14.d5 Bf5–/+) 14.d5= Bf5 15.d6 (15.Bc4 Be4 16.d6 Nf7 17.de7 Qe7=) 15...Be4 (15...Nb6 16.Qd4 (worse is 16.de7 Qe7 17.Qd4 Qe4 18.Qe4 Be4–/+) 16...Re8 17.Bc4 Nc4 18.Qc4 Nf7 19.0-0 Bd6 20.Nd6 Qd6 21.Rfd1=) 16.Bc4 Kh8 17.de7 Qe7 18.0-0 Nb6 (18...Rad8 19.Qe2 Rfe8 20.Rfe1=) 19.Bb3 Bg6 (19...Rad8!? 20.Nd4 Qe8+=) 20.Re1+/– Qd8 21.Nd4 Bf7 22.Bc2 (22.Ne6 Qd1 23.Rad1 Rfc8+/–) 22...Re8 (22...Rc8 23.Bc1+/–) 23.Qd3 (23.Qf3 Re1 24.Re1 Nc4+=) 23...Bg6+= 24.Qd1 (24.Re8 Qe8 25.Qf3 Bc2 26.Nc2 Rc8+=) 24...Bc2 (24...Bf7 25.Qf3+/–) 25.Qc2 Rc8 26.Re8 (26.Qb3 Nc4+=) 26...Qe8= 27.Qb3 Qe4 (27...Nc4 28.a4=) 28.Nb5+= a6 (28...Rc2!?+=) 29.Nd6+/– Qc2 30.Nf7?? (better is 30.Qc2 Rc2 31.Re1+/–) 30...Nf7–+ 31.Qf7 Qb2 32.Re1 Threatening mate... how? 32...h6 33.Re8 (33.Qb7 Qd2 34.Rf1 Qd6–+) 33...Re8 34.Qe8 Kh7 35.Qe4 f5 36.Qf5 g6 37.Qc5 Nd7 38.Qd5 (38.Qe3 Qa1 39.Kh2 Qe5 40.Kg1 Qe3 41.fe3 Ne5–+) 38...Qa1 39.Kh2 Qe5 40.Qe5 Ne5 41.Kg3 (41.f4 Nd3 42.Kg3 b6–+) 41...Kg7 (41...b5 42.Kf4 Nc4 43.Ke4–+) 42.f4 (42.Kf4 Nd3 43.Ke3 Ne1–+) 42...Nc4 43.a4 Nb2 44.a5 (44.Kf3 Na4 45.Ke4 Nc3 46.Kd4 Na2–+) 44...Nd3 45.b5 (45.f5 gf5 46.b5 ab5–+) 45...ab5 46.Kf3 b4 47.Ke3 Nc5 (better is 47...Ne1!? 48.Kd4 Ng2 49.Kc4–+) 48.Kd4 b3 (48...Ne6 49.Kc4 Nf4 50.Kb4 Ng2 51.Kc5–+) 49.Kc3 Kf6 50.g4 h5 51.Kb2 hg4 (51...h4 52.Kc3–+) 52.hg4 Ke6 53.Kc3 Kd5 54.Kb2 Ke4 55.f5 gf5 56.g5 (56.gf5 Ke5–+ (56...Kf5 57.Kb1 Nd3 58.Ka1–+)) 56...Ke5 57.Kc3 (57.g6 Kf6 58.g7 Kg7–+) 57...f4 58.g6 Kf6 59.Kb4 (59.g7 Kg7 60.Kd2–+) 59...f3 60.g7 Kg7 61.Kc5 b2 (61...b2 62.Kd6 f2–+) 0–1. Sebasti,A – Marta,Daniele, Academia Cup op, 1996.

6.Nd2. Del Haro,Daniel – Vazquez,Jose Maria, Friendly UECC Email, 1999.

10.Na3 Qa5 A) 11.c4 cd4 (11...e4 12.Bb1 Qb4 13.Qb3 Bg4 14.Ng3 Qb3+=) 12.Nb5 Bb8 13.cd5 Bd5 14.Ng3 de3–/+; B) 11.de5 Ne5 12.Bb5 N5c6 13.Nf4 Bf7 14.c4 Bf4+=.

10.Na3 c4+= 11.Nb5 Bb8 12.Bc2 Ra5 (12...0-0 13.Qb1 e4 14.a4+= Ra5=; 12...Qa5 13.a4 0-0 14.Ba3 Re8=) 13.a4= 0-0 14.e4 (14.Ba3 Rf7=) 14...de4 (14...f5+=) 15.Ba3 (15.Be4 Bd5 16.Ng3 f5 17.Bd5 Nd5=) 15...f5–/+ 16.Rb1 Rf6 17.Nd6 Bd6 18.Bd6 ed4 19.Nd4 Bd5 20.Bb4 Ra8 21.Qh5 (21.Ne2 Bc6+=) 21...Qe8+= 22.Qe2 Ng6 23.Qd2 Nde5 (23...Qf7 24.f3–/+) 24.Nf5+= Qe6 25.Nd6? (better is 25.Ne3 Nd3 26.Bc5=) 25...Nh4–+ 26.Rfd1?? (better is 26.f4 ef3 27.Ne4–+) 26...Nhf3! 27.gf3 0–1. Lindberg,Rune – Sorensen,Paul, MCO, 1996.

10.Na3 e4 A) 11.Bc2 Qa5 (11...Ra5 12.c4 Qb8 13.h3 0-0 14.cd5 Bd5=; 11...Qc7 12.c4 Ra5 13.Nb5 Qb6 14.Nd6 Qd6+=; 11...Qb8 12.h3 Ra5 13.c4 0-0 14.cd5 Bd5=) 12.dc5 Nc5 13.Nd4 Bd7 14.c4 Qb4+=; B) 11.Bb5 0-0 (11...c4 12.Nf4 Bf7 13.Nc2 Ra5 14.a4 0-0=) 12.dc5 Nc5 13.Nd4 Qa5 14.Nac2 Bf7+=; C) 11.Nb5 Bb8 12.Bc2 Ra5 13.a4 c4 14.Ba3 0-0=.

10.dc5 A) 10...Bc5 A1) 11.Qb3 Qc8 (11...Ra5 12.c4 Bd6 13.Bc3 Rc5 14.cd5 Bd5=; 11...Qc7 12.c4 Bd6 13.cd5 Bd5 14.Qc2 e4=; 11...Qa5 12.c4 e4 13.Nf4 Bf7 14.Be2 Nb6=) 12.Nd2 Nc6 13.c4 Na5 14.Qb5 dc4+=; A2) 11.e4 de4 (11...Qa5 12.ed5 Nd5 13.Qc2 g6 14.Bc1 f5+=; 11...Ra5 12.ed5 Nd5 13.Nd2 0-0 14.Nb3 Ra7+=) 12.Be4 Ra5 13.Nd2 f5 14.Bf3 Qc7+=; A3) 11.Nc1 Qa5 (11...Ra5 12.Nb3 Ra8 13.Qh5 Bf7 14.Qg4 0-0=; 11...e4 12.Be2 Qa5 13.Nb3 Qa4 14.Qd2 Rc8=) 12.Nb3 Qa4 13.Qh5 g6 14.Qe2 Bd6+=; A4) 11.a6 ba6 12.Nd2 Bd6 13.Nb3 0-0 14.c4 dc4+=; A5) 11.Nd2 Bd6 (11...Ra5 12.c4 Ba3 13.Ba3 Ra3 14.cd5 Rd3=; 11...Qa5 12.c4 Qb6 13.Rb1 Qc6 14.cd5 Nd5=) 12.Nb3 Qc7 13.Ng3 0-0 14.Rb1 f5=; B) 10...Nc5 11.Bb5 Kf7 (11...Nc6 12.c4 dc4 13.Nd2 Be7 14.Nc4 0-0=; 11...Kf8 12.Nd2 Qa5 13.c4 Na4 14.Bc1 Kg8=) 12.c4 Qa5 13.cd5 Nd5 14.Bc4 Na4+=.

10.e4 A) 10...Qa5 11.ed5 Bd5 (11...Nd5 12.c4 Nb4 13.d5 Bg4 14.f3 Nd3=) 12.c4 Qb6 13.Bc1 Bf7 14.d5 f5=; B) 10...Ra5 B1) 11.Nd2 ed4 (11...0-0 12.ed5 Nd5 13.Nc4 Ra6 14.de5 Bc7+=; 11...de4 12.Ne4 Bc7 13.dc5 0-0 14.c4 f5=) 12.cd4 Qc7 13.f4 c4 14.Bc2 0-0=; B2) 11.Ba3 0-0 12.ed5 Bd5 13.c4 Bf7 14.dc5 Bc5+=; B3) 11.ed5 Nd5= (11...Bd5 12.c4 Bf7 13.d5 0-0 14.Nbc3 f5=) 12.c4 Nb4 13.d5 Bf7 14.Be4 Ra2=; C) 10...ed4 11.cd4 Qc7 (11...Qa5 12.ed5 Bd5 13.Nec3 cd4 14.Nb5 Bc5=; 11...c4 12.ed5 Bd5 13.Nec3 Bg2 14.Qh5 g6=) 12.f4 c4 13.Bc2 de4 14.Be4 0-0=; D) 10...c4 11.de5 Be5 (11...Ne5 12.Bc2 de4 13.Be4 Ra5 14.Nd4 Bd5=) 12.Bc2 de4 13.Be4 Nc5 14.Bc2 Nd3+=.

10.de5 Ne5 A) 11.Nf4 Nd3 (11...Bf7 12.Bb5 N5c6 13.Qg4 Bf4 14.Qf4 0-0=) 12.Ne6 Nb2 13.Nd8 Nd1 14.Nb7 Nb2+=; B) 11.Bc2 Qa5 (11...Nc4 12.Bc1 Qa5 13.Nf4 Bf7 14.e4 de4+=; 11...Ra5 12.Nd2 0-0 13.Nf4 Qd7 14.Ne6 Qe6+=; 11...0-0 12.Nf4 Bf7 13.Nd2 Qa5 14.Qb1 N5g6+=) 12.Na3 c4 13.Nb1 0-0 14.Nd4 Bg4+=; C) 11.Na3 Nd3 12.Qd3 Ra5 13.Nf4 Bf5 14.Qd2 b5–/+; D) 11.Bb5 Bd7 12.a4 Bb5 13.ab5 Nc4 14.Qc2 Ra5+=.

5.Qa4 Qd7 6.Bb5 Nc6 7.Nf3= Bg4 8.Bc6 Qc6 9.Qc6 bc6 10.Nh4 c5–/+ 11.h3 Bd7 12.bc5 Bc5 13.Ba3 Ba3 14.Na3 e4 15.g3 0-0-0 16.Rb1=+ Ne7 17.Ng2 Ng6 18.c4 dc4–/+ 19.Nc4 Rhe8 20.Na5 Ne5 21.Nf4 Ba4 22.Ke2 Bc2 23.Rb2 Bd3 24.Nd3 Rd3 25.Rc1 Rd5= 26.Rb7 Ra5 27.Rcc7 Kd8 28.Rg7 Rc5 29.Ra7 h5 30.Rh7 Nd3 31.a4 Nc1= 32.Kf1 Nb3 33.Ke1 Nc1 34.Ra8 Rc8 35.Rc8 Kc8 36.Rh5 Nd3 37.Ke2 Kd7 38.f3+/– Nc1 39.Kf2 Nd3 40.Kf1 Nb2 41.Rd5 Kc7 42.Rf5 ef3 43.Rf6 Nc4 44.Ke1 Rh8 45.h4 Ne5 46.Kf1 Rb8+/– 47.Rf4 Rb1 48.Kf2 Nd3 49.Kf3 Nf4 50.Kf4 Kd6 51.h5 Rf1 52.Kg5 Rg1 53.g4 Ra1 54.Kf5 Ra4 55.g5 Ra5 56.Kf6 Re5 57.g6+– Rh5 58.g7 Rh3 59.g8Q Rf3 60.Kg7 Rg3 61.Kf8 Rg8 62.Kg8 Ke5 63.Kg7 Ke4 64.d4 Kd5 65.Kf7 Kc4 66.Ke6 Kb5 67.e4 Kc4 1–0. Comet B50 – EXchess 3.11, 2004.

5.Bb5 c6 6.Ba4 b5 7.Bb3 Bd6 8.Ne2 Bb1 9.Rb1= c5?? 10.Bd5+– cb4 11.Ba8 bc3 12.Bc3 a6 13.Bd5 Qd7 14.Qb3 Nc6 15.Bg8 Ke7 16.Bd5 g5 17.0-0 h6 18.Rfe1 h5 19.h3 g4 20.h4 f5 21.Nf4! ef4 22.ef4 Kd8 23.Be6 Qe7 24.Bf5 Re8 25.Re7 Ke7 26.Qe6 Kf8 27.Qd6 Ne7 28.Qf6 Kg8 29.Qg7 1–0. I need chocolate... – maz_manchester, ChessWorld.net, 2005.

5.e3 Ne7 6.Na3 a5 7.Qa4 c6 8.b5 0-0 9.Be2 e4 10.Nd4 c5 11.Nb3 Nd7 12.Nb1? Nb6–+ 13.Qa3 c4 14.Nc5 Qc7 15.Bc1 Bc5 16.Qb2 0–1. Comet B50 – Fritz 8, 2004.

5.e3 Ne7 6.Na3 a5 7.Qa4 Bd7 8.Nb5 e4 9.Nfd4 0-0 10.Be2 Nbc6 11.Nc6 Bc6 12.ba5 b6 13.a6 Qd7 14.h3 Be5 15.Ba3 Bb7 16.Be7 Qe7 17.Nd4 Qf7 18.Rb1 f5 19.g3 Bc8 20.h4 Bd6 21.Rb3 Ra7 22.Nc6 Bd7 23.Bb5 Raa8 24.Nd4 Bb5 25.Rb5 Bc5 26.Rb2 Bd4 27.cd4 Ra7 28.Qc6 Ra6 29.a4 Rfa8 30.Rb4 Kh8 31.0-0 f4 32.ef4 Ra5 33.Rc1 R5a7 34.Rc3 Qh5 35.Kg2 Qf5 36.Rb5 Rd8 37.a5 ba5 38.Qc5 Raa8 39.Ra5 Rac8 40.Qc6 Qh5 41.Rca3 Rb8 42.Qc7+/– Re8 43.Qd7 Red8 44.Qe6+/– Qd1 45.Rd5 Re8 46.Qf7 Rf8 47.Qe7 Rfe8 48.Rb5 Rbc8 49.Qf7 Rf8 50.Qb7 Rc1–+ 51.Kh3 h5 52.Rh5 Qh5 53.Qe4 Rcc8 54.Re3 Qd1 55.d3 Rfd8 56.f3 Qf1 57.Kg4 Rb8 58.Qg6? Qc1 59.Re7=+ Qc8 60.Kg5 Rd5 61.f5 Qf8 62.Rf7 Qg8 63.Re7 Rf8 64.Re4 Rff5 65.Qf5 Rf5 66.Kf5 Qf7 67.Kg4 Qb3 68.Re5 Qc3 69.Rh5 Kg8 70.d5 g6 71.Rg5 Kf7 72.h5 gh5 73.Rh5 Ke7 74.Rg5 Kd6 75.f4 Qd3 76.Re5 Qh7 77.Rh5 Qg7 78.Rg5 Qd7 79.Kf3 Qh3 80.Ke3 Qf1 81.g4 Qd1 82.Ke4 Kc5 83.Ke3 Qd4 84.Kf3 Qd3 85.Kf2 Kd4 86.Rf5 Ke4 87.Re5 Kf4 88.Re2 Qd5 89.g5 Qg5 90.Rb2 Qg3 91.Kf1 Qd3 92.Kg2 Qe4 93.Kh2 Kf3 94.Rg2 Qf4 95.Kh1 Qc1 96.Kh2 Qh6 97.Kg1 Qh4 98.Rg6 Qd4 99.Kh2 Qb2 100.Kh1 Qb1 101.Kh2 Qg6 102.Kh3 Qg3 0–1. Comet B50 – Fritz 6, 2004.

4.a3 Ba5 5.Na4 Nc6 6.Bc3 Nge7 7.Ba5 Na5 8.Qb1 d5–+ 9.Qb5 c6 10.Qc5 0-0 11.Nf3 b6 12.Qc3 e4 13.Nd4 c5 14.Nb3 d4 15.Qg3 Nac6 16.c3 Be6 17.Rb1 Ne5 18.Qh4 Qe8 19.cd4 Qa4 20.de5 Bb3 21.d3 Qa5# 0–1. cind18 – Caissa, Caissa.com, 2004.

4.Na4 b5 5.e3? ba4–+ 6.Qh5 g6 7.Qf3 Nc6 8.Qe4 d5 9.Qh4 Rb8 10.Rb1 a3 11.Bc1 Bd2! 12.Bd2 Rb1 13.Bc1 Rc1 14.Kd2 Rf1 15.Ke2 Ba6 16.Kf3 f5 17.Qa4 e4 18.Kf4 Qd6 19.Kg5 Qe7 20.Kf4 Qh4 21.g4 Qg4# 0–1. looy – Caissa, Live Game Caissa's Web, 2005.

4.Nd5 Bd6 5.e3 c6–/+ 6.Nc3 Ne7 7.Ne4 Bb4 8.Rb1 0-0 9.c4 d5–/+ 10.Ng3 c5 11.cd5–/+ Nd5 12.Qb3 Be6 13.a3?? Ba5 14.Qb7?? Nc6 15.Qc6?? Re8 16.Ba6 Bc8? 17.Bc4+– h6 18.Bd5 Kh7 19.Qc5 Rb8 20.Qc4 Be6 21.Be6 Qd2 22.Kf1 Rb2 23.Qc1?? Qf2# 0–1. surfnsuds – aliwood, internet, 2005.

4.Nf3 d5 5.d4 c5 6.de5? d4–+ 7.Qd2 dc3 8.Bc3 Qd2 9.Kd2 Bc3 10.Kc3 Nc6 11.ef6 Nf6 12.e3 Ne4 13.Kd3 Nf2 14.Ke2 Nh1 15.g3 Be6 16.Bg2 Ng3! 17.hg3 0-0-0 18.Ng5 Bc4 19.Kf2 Rd2 20.Kf3 Rf8 21.Kg4 Rg2 22.Nh7 Be6 23.Kh4 Rh2 24.Kg5 Rf5 25.Kg6 Ne7 26.Kg7 Rf7 27.Kh8 Rhh7# (27...Rfh7#) 0–1. Administrator – GNUChess, 2000.

5.Bc4 Bc3 6.Bc3 g6 7.Bg8 Rg8–/+ 8.h4 d5–+ 9.Qf3 d4 10.Bb2 Be6 11.a3 Qe7 12.Ne2 0-0-0 13.0-0? f5–+ 14.d3 Qh4 15.Qg3 Qg3 16.Ng3 f4 (16...f4 17.Ne2 g5–+) 0–1. Kitvis – fretless, internet, 2005.

5.Nf3 Nge7 6.Bc4 Na5 7.Be2 0-0 8.0-0 d5 9.d3 d4 10.Nd5? Nd5–+ 11.ed5 Qd5 12.Rc1 Qa2 13.Rb1 Nc6 14.c3 dc3 (15.d4 cb2–+) 0–1. rene822 – Caissa, Live Game Caissa's Web, 2004.

4.a3 Ba5 5.e3 =+.

4.a3 Bc5 5.Bc3 (5.e3 d5 6.cd5 Qd5=+) 5...d5–/+ 6.Nf3 (better is 6.d4!? ed4 7.Bd4 Bd4 8.Qd4–/+) 6...d4–+ 7.Bb4 Na6 8.Ba5 (8.e3 Bg4–+ (8...Nb4?! 9.ab4 Bf8 10.c5–/+)) 8...b6 9.Bb4 Nb4 (better is 9...Ne7!?–+) 10.ab4–/+ Bb4?? (10...Bd6–/+) 11.e3?? (11.Qa4 Qd7 12.Qb4 e4+=) 11...Bg4?? (11...Qe7!? 12.Bd3 Bb7 13.Bc2–+) 12.h3?? (12.Qa4 Qd7 13.Qb4 c5+/–) 12...Bh5?? (better is 12...Bf3 13.Qf3 de3 14.Qc6 Kf7 15.fe3 f5–+) 13.g4 (13.Qa4 Qd7 14.Qb4 a5+/–) 13...Bg6 14.Bd3?? (14…Bd3 15.Qa4 Qd7 16.Qb4–+; better is 14.Qa4 Qd7 15.Qb4+=). jbaum – sugar daddy, ChessWorld.net, 2002.

4.a3 Bd6 5.e3 Ne7 6.Nf3 b6 7.Be2 Ba6 8.0-0 0-0 9.Nc3 c6 10.d4 ed4 11.ed4 Nf5 12.Re1 Bc4?? (better is 12...Re8=) 13.Bc4+– Kh8 14.Ne4 b5 15.Bb3 b4? (15...Bf4 16.d5+–) 16.Nd6 (16.g4!? ba3 17.Bc3 Bh2 18.Nh2 Nh6+–) 16...Nd6 17.ab4 Na6 (17...Re8 18.d5+–) 18.Bc3 (better is 18.Ra6 Qb8 19.Ra4+–) 18...Rb8 (18...Qb6 19.Nh4 Nf7+–) 19.Ra6 1–0. Fournier,Frederic (1775) – Erickf, Active (5/0), 2005.

4.Qb3 c5 5.e4 Nc6 6.Nf3 (6.Qg3 g6–/+) 6...Nge7 7.a3 Ba5 8.Qe3 (8.Be2 0-0–/+) 8...d6 9.Bc3 (9.Bd3 0-0–/+) 9...Be6 10.Be2 Bc3 (10...Rb8 11.0-0–/+) 11.Nc3 Nd4 (better is 11...0-0–/+) 12.Nd4? (better is 12.Qd3–/+) 12...cd4–+ 13.Qg3 dc3 14.Qc3 (14.Qg7 cd2 15.Kd2 Qa5 16.Kd1 Rg8 17.Qf6 Qc3–+) 14...Nc6 (14...Nc6 15.Rb1 Qc7–+) 0–1. Foisor,V – Borrmann,Fritz, corr, 1975.

4.e3 d5 5.cd5 (5.Qb3 Qd6+=) 5...Qd5–/+ 6.Nc3 Bc3 7.Bc3 Ne7 8.Qa4 Bd7 9.Qb4 c5 10.Qb2 0-0 11.Nf3 a6 (11...e4 12.Ng1–+) 12.d3 b5 Black intends c4 13.e4 Qc6 14.Ba5 c4 (better is 14...Qd6!?–+) 15.Rc1+= Bg4 16.dc4? (better is 16.Nd2!?=) 16...Qe4–/+ 17.Be2 Bf3 18.gf3 Qg6 19.cb5 ab5 20.Qb3 (20.Qb5 Nbc6 21.Bb6 Rfc8–/+) 20...Kh8 21.Qb5 (21.Bb4!? Nbc6 22.Be7 Ne7 23.Bb5–+) 21...Nbc6!–+ 22.Bb4?? (22.Rc6 Nc6 Combination) 22...Rab8 (22...Rfb8 23.Be7 Rb5 24.Bb5 Ne7 25.a4–+) 23.Qc5 (23.Be7 Rb5 24.Bf8–+) 23...Rb4 (23...Nb4?! 24.Qe7 Na2 25.Rd1–+) 24.Qd6 (24.a3 Rb2 25.Bd1 Qg2–+) 24...h5 (24...Rd8 25.Qc5–+) 25.Rc6 (25.a3 Rb1 26.Rb1 Qb1 27.Qd1 Qb2–+) 25...Rb1 (better is 25...Qb1 26.Bd1 Rd4 27.Qd4 ed4 28.Rc2–+) 26.Kd2 Rb2 27.Ke1 Rb1 (27...Nc6 28.Qf8 Kh7 29.Qa3 Rb1 30.Kd2 Rh1 31.f4–+) 28.Bd1?? (28.Kd2 Ra8 29.Bd3 Qg5 30.Ke2 Rh1 31.Qe7–+) 28...Rd1! 29.Kd1 (29.Qd1 Nc6 Zwischenzug; 29.Kd1 Qb1 Double attack (29...Nc6 Zwischenzug)) 29...Qb1?? (better is 29...Qg2 30.Qe7 Ra8–+ (30...Qh1?! 31.Ke2 Rb8 32.Rb6+=)) 30.Rc1+= Qa2?? (better is 30...Qb7 31.Qa3 Rd8 32.Ke1 Nc6=) 31.Qe7+– Rg8 32.Qc5?? (better is 32.Ke1+–) 32...Rd8= 33.Ke1 Qd2 34.Kf1 Rd5?? (better is 34...Qd3 35.Kg2 Qg6 36.Kh3 Qf5 37.Kg2 Qg6 38.Kh3 Qf5 39.Kg2 Qg6=) 35.Qe3+– Qb4 36.Rc8 Kh7 37.Qe4 Qe4 38.fe4 Rd4 39.f3 Rd2 40.Rg1 Kh6 (40...g5 41.Rg2 Rd3+–) 41.Rh8 1–0. GuestLQTV – GuestLTRJ, freechess.org, 2017.

4.e4 (--> 3.e4 Bb4 4.c4).

4.g3 Ne7 5.Bg2 d6 (5...0-0 6.a3 Bc5 7.Nc3–/+) 6.Nf3 Nbc6 7.0-0 (7.a3 Bc5–/+) 7...Be6 8.d3 d5 9.Nbd2 (9.a3 Ba5 10.Nbd2 0-0–/+) 9...dc4 10.Nc4 (10.dc4 0-0–/+) 10...e4 11.Ne1 (11.Nh4 ed3 12.ed3 0-0–/+) 11...ed3 12.ed3 0-0 13.Nc2 Bc5 (13...Bd5 14.Nb4 Nb4 15.Be4–/+) 14.Qe2 (14.Re1 Bd5–/+) 14...Bd5 15.N2e3 (15.Bd5 Qd5 16.N4e3 Qf7–/+) 15...Bg2–+ 16.Kg2 Re8 17.Rad1 (17.Qd1 Nd5 18.Qb3 Re6–/+) 17...Nf5 (17...b5 18.Qh5 Bd4 19.Bd4 Nd4 20.Nd2–+) 18.Qg4 (18.Qf3 Nfd4 19.Bd4 Bd4–/+) 18...Nfd4–+ 19.h4 (19.Qh5 f5–+) 19...f5 (19...b5 20.Bd4 Nd4 21.Nd2–+) 20.Qh5 g6 21.Qh6 (21.Qg5 b5 22.Qd8 Rad8–+ (22...Nd8?! 23.Nd5 N8e6 24.Nf6 Kf7 25.Ne8 bc4 26.Bd4 Bd4 27.Nc7 Nc7 28.dc4+=)) 21...b5 (21...b5 22.Ba3 Ba3 (22...bc4?! 23.Bc5 c3 24.Rfe1–/+) 23.Na3 Ne5–+) 0–1. Storgaard,Flemming (1830) – Price,Bob (2200), IECG, 1999.

5.a3 Bc5 6.e3 Nge7 7.Nc3 a6 8.d3 d6 9.Nf3 0-0 10.Be2 Kh8 11.0-0=+ Be6 12.Nd5 b5–/+ 13.e4 Rb8 14.Qc2 1–0. mic (2300) – davidcleto (2350), net–chess.com, 2008.

5.Nc3–/+.

5.e3 0-0 6.Nf3 d6 7.Be2 Bc3 8.Bc3 e4 9.Nd4 c5 (9...Nbc6 10.d3 Nd4 11.Bd4+=) 10.Nb5 (10.Nb3 Na6–/+) 10...a6–/+ 11.Na3 Nbc6 12.0-0 d5 13.d3 (13.d4 Qd6 14.Qb3 b6–/+) 13...dc4 14.dc4 Black creates threats along the open d–file 14...Qd1 15.Rad1 Be6 16.Rb1 (16.Nb1!?–/+) 16...b5–+ 17.cb5 ab5 18.Nb5 Ra2 19.Rb2 Nb4 (19...Rb2 20.Bb2 Rd8 21.Bc3–+) 20.Ra2 Na2 21.Ba1 Rd8 22.Nc7 Bf7 23.Na6 (23.Rb1 Nb4–+) 23...Rd2 24.Re1 (24.Bg4 Bc4 25.Rd1 Rd1 26.Bd1 Ba6 27.Bb3 Kf8 28.Ba2 Bb7–+) 24...Rc2 25.Bf1 Nc1 26.Nc7 Nd3 27.Bd3 ed3 28.Nb5 d2 29.Rd1 Rc1 30.Nc3 Bb3 31.Rf1 Nd5 0–1. FR (1660) – Pischner,Rainer (2205), BdF T, 2004.

5.Nf3 0-0 6.a3 Ba5 7.e3 d6 8.Be2 Qe8 9.0-0 Qg6 10.Nh4 Qh6 11.Nf3 f5 12.d3 Be6 13.Nb5 Nd7 14.c5? (better is 14.d4!? a6 15.Nc3–/+) 14...Nc5–+ 15.d4 ed4 16.Bd4 (16.Nfd4 Bd5–+) 16...a6 17.Nc3 Ne4 18.Ne4 fe4 19.Nd2 c5 20.Bb2 d5 21.Nb3 (21.Be5 c4–+) 21...Bc7 22.g3 Bd6 23.Re1 (23.Rc1 Rac8 24.a4–+) 23...Rf2! 24.Bg4 (24.Kf2 Qh2 Mate attack) 24...Qh2 0–1. FR (1830) – Krebs,Juergen (2355), BdF T, 2004.

5.a3 Ba5 6.Bc3 Bc3 7.Nc3–/+.

5.Nc3 Be6 6.d4 Nd7 7.Bd3 Ne7 8.Nge2 0-0 9.Ng3 (9.0-0 Nb6+=) 9...Nb6 (9...d5 10.Qb3 Bc3 11.Bc3 ed4 12.Bd4–/+) 10.d5 Bd7 11.Kf1 (11.0-0!?–/+) 11...f5–+ 12.f4 (12.Kg1!?–+) 12...Ng6 13.Qh5? (13.a3 Bc5 14.Qd2–+) 13...ef4 14.Nf5 (14.Nce2 fg3 15.hg3–+) 14...fe3 15.Ke2 (15.Kg1 Bf5 16.Bf5–+) 15...Nf4 16.Ke3 Nh5 17.g4 Qg5 18.Ke2 Rae8 19.Ne4 Qg4 20.Ke3 Qf4 21.Kd4 (21.Ke2 Qd2 22.Kf1 Rf5 23.Kg1 Re4 24.Be2 Qg5 25.Bg4 Qg4) 21...Bf5 0–1. Zuazua Iglesias,F – Aparicio Garcia,E, Asturias–chT40 Primera B, 1999.

5.Be2 Be6 6.Nf3 Nc6 7.a3 Ba5 8.0-0 Qd7 (8...d5 9.c5+=) 9.Nc3 (9.d4 ed4 10.ed4 d5+=) 9...Bc3 10.Bc3 0-0-0 (10...Qf7 11.Qa4+=) 11.d4= e4 (11...Bf5 12.Nh4 ed4 13.ed4=) 12.Nd2+= g6? (better is 12...Bf5+=) 13.d5+– Bd5? (13...Bf5 14.dc6 Qc6+–) 14.cd5 Nce7 (14...Ne5 15.Rb1+–) 15.Ne4 Qf5 (15...Rf8+–) 16.Bg4 Qg4 17.Qg4 f5 18.Qh3 Kb8 19.Ng5 Nd5 20.Bh8 Ngf6 21.Bf6 Nf6 22.Qh4 Re8 23.Nh7 Nh7 24.Qh7 a6 25.Rfc1 Rc8 26.Rab1 Ka7 (26...b5 27.Rc6 d5 28.Ra6 Kb7 29.Qd7 Ka6 30.Qb5 Ka7 31.Qa4) 27.Rc7 Rc7 28.Qc7 1–0. Woelfelschneider,Peter – Pasch, 2008.

5.Be2 Ne7 6.a3 Ba5 7.Nf3–/+.

5.a3 Ba5 6.Qg4 (6.Nc3!?+= 0-0 (6...Nbc6 7.Nf3 d6 8.Bd3 f5 9.e4 0-0 10.0-0 Qe8; 6...Na6 7.Nf3 Nc5 8.Be2 0-0 9.0-0 d6 10.d4 ed4) 7.Nf3 d6 8.Bd3 Nbc6 9.0-0 Bf5 10.Bf5 Nf5; 6.Nf3 0-0 (6...d6 7.Nc3 0-0 8.Be2 Nbc6 9.0-0 Be6 10.Bd3 Qe8; 6...Na6 7.Nc3 Nc5 8.Be2 0-0 9.0-0 d5 10.d4 ed4) 7.Nc3 d6 8.Bd3 f5 9.Bc2 e4 10.Nd4 c5; 6.Be2 0-0 (6...Nbc6 7.Nc3 d5 8.cd5 Bc3 9.dc3 Qd5 10.Nf3 Be6; 6...d5 7.cd5 Qd5 8.Nf3 Nbc6 9.0-0 0-0 10.Nc3 Bc3) 7.Nc3 d5 8.cd5 Nd5 9.Qb3 Be6 10.Bc4 Bc3; 6.Qc2 d5 (6...d6 7.Bd3 f5 8.Nc3 0-0 9.Nh3 Nd7 10.0-0 Nc5; 6...Nbc6 7.Nf3 d6 8.Be2 0-0 9.0-0 Bf5 10.d3 Qd7) 7.Nf3 c6 8.Nc3 0-0 9.Qb3 Na6 10.cd5 cd5) 6...0-0 '–/+' 7.h4 (7.Qd1!?–/+ Na6 8.Nc3 Nc5 9.Nf3 d5 10.cd5 a6; 7.Qf3 d6 8.Nc3 Nd7 9.Nge2 Nb6 10.Ng3 f5) 7...d5 '–+' 8.Qd1 (8.Qh5 Nbc6 9.cd5 Qd5 10.Qd1 Be6) 8...Nbc6 (8...d4 9.c5–+ (9.ed4 ed4 10.Bd3 Nd7) 9...Be6 10.ed4 Nbc6) 9.Nc3 (9.cd5 Nd5 (9...Qd5 10.Nc3 Bc3) 10.Nf3 (10.Nc3 Nc3) 10...e4–/+) 9...d4 10.Ne4 Bf5 (10...f5–+) 11.Nc5 de3 12.fe3 Qe8 (12...b6 13.Nb3–+) 13.g4 (better is 13.Nf3–+) 13...Qg6 '??' (13...Rd8 14.Nb3 Be6 15.Be2–+) 14.Be2 '??' (better is 14.gf5 would hold out 14...Qg3 15.Ke2=) 14...Rad8 '–+' 15.Nb3 '??' (15.Bc1 Bc8 16.Nb3–+) 15...Bc2 16.Na5 Bd1 17.Nc6 Qe4–+ 0–1. Schwarz,B – Lachmann,Hans Georg, OWL–ch Altenbeken, 1948.

5.a3 Bd6 A) 6.Nf3 Na6 7.Nc3 Nc6 8.Qc2 Nc5 9.d4 ed4 10.ed4 Ne6; B) 6.Nc3 Na6 (6...0-0 7.Nf3 Na6 8.Qc2 c6 9.Be2 Bc7 10.0-0 d5; 6...Nbc6 7.Ne4 Nf5 8.g4 Nh6 9.Nd6 cd6 10.Bd3 Qe7) 7.Nf3 0-0 8.Qc2 c6 9.Be2 Bc7 10.0-0 d5; C) 6.Qc2 b6 (6...Na6 7.Nf3 b6 8.Nc3 Bb7 9.Bd3 f5 10.Bf5 Nf5; 6...Bc5 7.d4 ed4 8.ed4 Bb6 9.Bd3 Ng6 10.Nf3 Nf4) 7.Nc3 Na6 8.Nf3 Bb7 9.Bd3 f5 10.Be2 0-0; D) 6.Qg4 g6 (6...Kf8 7.Nc3 Bc5 8.Qf3 Nbc6 9.Bd3 d6 10.Nge2 Be6; 6...Ng6 7.Nc3 0-0 8.Nf3 Bc5 9.Qh5 Nc6 10.Bd3 d6) 7.Nc3 h5 8.Qh3 0-0 9.Nf3 Nbc6 10.Be2 Bc5.

5.Qb3 a5 (5...Nbc6 6.a3 Ba5 7.Nf3-/+) 6.Ne2 (6.a3 Bd6=+) 6...0-0 (6...d5 7.cd5 Qd5 8.Qd5 Nd5 9.a3-/+) 7.Ng3 (7.a3 Bc5-/+) 7...Kh8 (7...Nbc6 8.Bd3-/+) 8.Be2 (8.a3 Bc5-/+) 8...d5 9.Qc2 Nbc6?? (9...Na6 10.cd5 Nd5 11.0-0-/+) 10.Bd3?? (better 10.a3+=) 10...e4 11.Be2 f5 12.cd5 Nd5 13.Nc3 Bc3 (13...Nc3 14.Bc3 Bd6 15.d3-/+) 14.dc3 Be6 15.c4 Ndb4 16.Qc3 The mate threat is Qxg7 16...Rf7 17.0-0 Qg5 (17...Nd3 18.Rfd1 Qh4 19.Bd3 ed3 20.f4-/+) 18.Nh5 Pawn g7, live or die! (18.a3 Na6=+) 18...Na6 (18...Nd3 19.Rfd1-/+) 19.h4 (19.Nf4 Qh6=+) 19...Qg6 (19...Qh6 20.Nf4-/+) 20.Nf4 Qh6 21.Bh5 (21.Rfd1 Re7=+) 21...Re7 22.Ne6 Qe6 (22...Qh5?? 23.Ng7 Qg6 24.Nf5 Re5 25.Ne7+-; 22...Re6?! 23.Be2-/+) 23.Be2 Ne5 (23...Qh6 24.h5-/+) 24.h5 (24.Rfd1 Nc5-/+) 24...Rg8 (24...Nc5 25.Ba3 Ned7 26.Qd4=+) 25.h6 (25.Qa5 Nd3 (worse 25...Nc4 26.Bc4 Qc4 27.h6+-) 26.Bd3 ed3=) 25...gh6 (better 25...Qh6!? 26.Qa5 Ng4 27.Bg4 fg4-/+) 26.f4= ef3 27.Rf3 (better 27.Bf3!? c6 28.Qa5=) 27...Rgg7 28.Qa5 Nf3 29.Bf3 Kg8?? (29...Qe3 30.Kh1 Qb6 31.Qb6 cb6 32.a4=+) 30.Bg7 (better 30.Bd5 Rgf7 31.Be6 Re6 32.Rd1+-) 30...Rg7?? (better 30...Qe3!? 31.Kh1 A) 31...Rg7 32.Qf5 (32.Bb7?! Rg4 33.Qd5 Kg7 34.Qd7 Kg6=) 32...Qe8 33.Bd5 Kh8 34.Rf1+- (34.Bb7?! Rf7 35.Qa5 Qe7 36.Qc3 Qf6 37.Qf6 Rf6+-); B) 31...Kg7 32.Qf5 c6=) 31.Kf2 (better 31.Bd5 Qd5 32.Qd5 Rf7+-) 31...Qc4?? (better 31...Qf6 32.Rd1 Re7+=) 32.Bd5+- Kf8 (32...Qd5 33.Qd5 Rf7 34.Qb7 Nc5 35.Qb8 Kg7+-) 33.Bc4 b6 34.Qf5 Rf7 (34...Ke7 35.Qe6 Kf8 36.Rf1 Rg2 37.Kg2 Kg7 38.Qf6) 35.Qf7 1-0. aravind555 (1655) - speed2 (1640), lichess.org, 2018.

5.Qc2 A) 5...Bc5 A1) 6.a3 d6 (6...0-0 7.Nf3 d6 8.d4 Bb6 9.Bd3 ed4 10.ed4 Qe8; 6...Na6 7.Nf3 d6 8.d4 Bb6 9.Bd3 Ng6 10.0-0 ed4) 7.Nf3 Bf5 8.Bd3 Qd7 9.Nc3 Nbc6 10.0-0 0-0; A2) 6.Nf3 Nbc6 (6...0-0 7.Bd3 g6 8.h4 Nbc6 9.a3 d6 10.h5 Bf5; 6...Kf7 7.a3 d6 8.Bd3 Nbc6 9.Nc3 Bg4 10.h3 Be6) 7.d4 ed4 8.ed4 Bb4 9.Nc3 d5 10.a3 Bf5; A3) 6.Qb3 Nbc6 (6...d6 7.Nc3 Nbc6 8.Nf3 Be6 9.Be2 b5 10.Nb5 a6; 6...a5 7.Nc3 Nbc6 8.Nf3 0-0 9.Be2 d6 10.0-0 Bf5) 7.Nc3 0-0 8.Nf3 d6 9.Be2 Bf5 10.0-0 Qd7; A4) 6.Nc3 Nbc6 (6...d6 7.a3 0-0 8.Bd3 f5 9.Nh3 h6 10.Na4 Na6; 6...Na6 7.Nf3 d6 8.d4 ed4 9.ed4 Bb6 10.Bd3 Kf7) 7.Nf3 d6 8.Ne4 Bf5 9.a3 d5 10.cd5 Qd5; B) 5...d6 B1) 6.Nf3 Bf5 (6...0-0 7.a3 Ba5 8.Nc3 Nbc6 9.Be2 Bf5 10.Ne4 d5; 6...Nbc6 7.a3 Ba5 8.Nc3 0-0 9.Be2 Bf5 10.Ne4 d5) 7.Bd3 Bd3 8.Qd3 Nd7 9.Qc2 Nc5 10.a3 Ba5; B2) 6.Bd3 Bc5 (6...Nbc6 7.Nc3 f5 8.a3 Bc5 9.Na4 0-0 10.f3 Bb6; 6...f5 7.a3 Ba5 8.Nc3 0-0 9.Nh3 Nd7 10.0-0 Nc5) 7.Nc3 Nbc6 8.a3 f5 9.Nh3 0-0 10.f4 e4; B3) 6.Nc3 Na6 (6...Bf5 7.e4 Be6 8.Nf3 0-0 9.Be2 Nbc6 10.0-0 Bc5; 6...0-0 7.Bd3 f5 8.a3 Ba5 9.Nh3 Na6 10.0-0 Nc5) 7.Nf3 Nc5 8.Bd3 Nd3 9.Qd3 0-0 10.0-0 Bf5; B4) 6.a3 Ba5 7.Bd3 f5 8.Nc3 0-0 9.Nh3 Na6 10.0-0 Nc5; C) 5...Na6 C1) 6.Nf3 d6 (6...Nc5 7.a3 Ba5 8.Bc3 Bc3 9.Nc3 d6 10.Bd3 Nd3; 6...0-0 7.a3 Ba5 8.Nc3 d6 9.Bd3 g6 10.0-0 Nc5) 7.a3 Ba5 8.Bd3 Nc5 9.Nc3 Nd3 10.Qd3 0-0; C2) 6.Nc3 d6 (6...Nc5 7.d4 ed4 8.ed4 Ne6 9.Nf3 d5 10.cd5 Qd5) 7.Nd5 Bf5 8.Qa4 Bd7 9.Qb3 Ba5 10.Nf3 Nc5; C3) 6.Be2 Nc5 (6...0-0 7.Nf3 Nc5 8.Nc3 d6 9.Nd5 Ba5 10.0-0 g6; 6...d5 7.a3 Bf5 8.Qa4 Bd7 9.Qc2 Bd6 10.cd5 Nd5) 7.a3 Ba5 8.Bc3 b6 9.d4 ed4 10.ed4 Ne6; C4) 6.a3 Ba5 (6...Bd6 7.Nc3 Nc5 8.Nf3 0-0 9.d4 ed4 10.ed4 Ne6) 7.Nf3 Nc5 8.Bc3 Nc6 9.Ba5 Na5 10.Nc3 0-0; D) 5...0-0 D1) 6.Bd3 g6 (6...f5 7.Be5 Nbc6 8.Nf3 Ne5 9.Ne5 Nc6 10.Nf3 d6; 6...h6 7.Nf3 Nbc6 8.a3 Bc5 9.Nc3 d6 10.h3 f5) 7.Nf3 Na6 8.Nc3 Nc5 9.0-0 d6 10.a3 Nd3; D2) 6.Nf3 d6 (6...Na6 7.Nc3 d6 8.Bd3 g6 9.a3 Bc3 10.Bc3 Nc5) 7.a3 Ba5 8.Nc3 Nbc6 9.Be2 Bf5 10.Ne4 d5; D3) 6.Nc3 Nbc6 (6...d6 7.Bd3 f5 8.a3 Ba5 9.Nh3 Na6 10.0-0 Nc5; 6...Na6 7.Nf3 d6 8.Bd3 g6 9.a3 Bc3 10.Bc3 Nc5) 7.Nf3 d6 8.Be2 Bf5 9.e4 Be6 10.0-0 Bc5; D4) 6.a3 Ba5 (6...Bc5 7.Nf3 Nbc6 8.Bd3 h6 9.Nc3 d6 10.0-0 f5) 7.Bd3 g6 8.Nc3 Na6 9.Nf3 Nc5 10.0-0 Nd3; E) 5...Nbc6 E1) 6.a3 Ba5 (6...Bc5 7.Nf3 0-0 8.Bd3 g6 9.h4 d6 10.h5 Bf5) 7.Nf3 d6 8.Nc3 0-0 9.Be2 Bf5 10.Ne4 Qd7; E2) 6.Nc3 0-0 (6...d6 7.Bd3 f5 8.a3 e4 9.Be2 Bc5 10.Nh3 Ng6; 6...Bc3 7.Bc3 d5 8.cd5 Qd5 9.e4 Qf7 10.Nf3 0-0) 7.Nf3 d6 8.Be2 Bf5 9.Ne4 b5 10.a3 d5; E3) 6.Nf3 d5 (6...Bc5 7.a3 d6 8.d4 Bb6 9.Bd3 ed4 10.ed4 0-0; 6...d6 7.a3 Ba5 8.Nc3 0-0 9.Be2 Bf5 10.Ne4 d5) 7.cd5 Nd5 8.Bd3 g6 9.a3 Be7 10.Nc3 Be6.

5.Nc3 A) 5...0-0 A1) 6.Nf3 Nbc6 (6...Na6 7.Be2 d5 8.Qb3 Bc3 9.Qc3 c5 10.d3 Qd6; 6...d6 7.Qb3 Bc3 8.Bc3 Na6 9.c5 Kh8 10.d4 ed4) 7.Qb3 d6 8.Bd3 f5 9.e4 Bc5 10.0-0 Nb4; A2) 6.Qb3 Bc3 (6...Na6 7.c5 Kh8 8.Ba6 Bc3 9.Bc3 ba6 10.Nf3 d6; 6...a5 7.Bd3 Na6 8.Na4 d6 9.Nf3 Bd7 10.a3 Ba4) 7.c5 Kh8 8.Qc3 b6 9.Nf3 Na6 10.Ba3 Nc5; A3) 6.Be2 Nbc6 (6...d6 7.Nf3 Nbc6 8.Qb3 Rb8 9.0-0 Be6 10.Nd5 Ba5; 6...Na6 7.Nf3 d5 8.Qb3 Bc3 9.Qc3 c5 10.d3 Be6) 7.Qb3 d6 8.Nf3 Be6 9.0-0 Rb8 10.Nd5 Ba5; A4) 6.Qc2 d6 (6...Nbc6 7.Nf3 d6 8.Be2 Bf5 9.Ne4 b5 10.a3 d5; 6...Na6 7.Nf3 d6 8.Bd3 g6 9.0-0 Nc5 10.a3 Nd3) 7.Bd3 f5 8.a3 Ba5 9.Nh3 Na6 10.0-0 Nc5; B) 5...Nbc6 B1) 6.Nf3 d5 (6...d6 7.Be2 0-0 8.Qb3 Nf5 9.0-0 Be6 10.Nd5 a5; 6...0-0 7.Qb3 d6 8.Be2 Bf5 9.0-0 Bc5 10.Rad1 Nb4) 7.cd5 Nd5 8.Qc2 Be6 9.Bd3 Bc3 10.dc3 Qe7; B2) 6.Qc2 Bc3 (6...0-0 7.Nf3 d6 8.Be2 Bf5 9.e4 Be6 10.0-0 Qd7; 6...d6 7.Nf3 0-0 8.Bd3 f5 9.a3 Bc5 10.e4 Ng6) 7.Bc3 d5 8.cd5 Qd5 9.e4 Qc5 10.Rb1 Rb8; B3) 6.Nd5 0-0 (6...d6 7.a3 Bc5 8.Qh5 Kf8 9.Ne2 Na5 10.Nec3 c6) 7.Nb4 Nb4 8.Qb3 Nec6 9.Nf3 Qe7 10.Rc1 b6; B4) 6.Qb3 Bc3 (6...0-0 7.Nf3 d6 8.Be2 Be6 9.0-0 Rb8 10.Nd5 Ba5; 6...d6 7.Nf3 0-0 8.Be2 Rb8 9.0-0 Be6 10.Nd5 Ba5) 7.Bc3 d5 8.cd5 Qd5 9.Nf3 Qb3 10.ab3 Be6; C) 5...d6 C1) 6.Be2 0-0 (6...Na6 7.Nf3 Nc5 8.0-0 0-0 9.d4 ed4 10.Nd4 Bd7; 6...Nd7 7.Nf3 0-0 8.0-0 Nc5 9.d4 ed4 10.Nd4 Bd7) 7.Nf3 Nbc6 8.Qb3 Be6 9.0-0 Rb8 10.Nd5 Ba5; C2) 6.Bd3 Na6 (6...Nd7 7.Nf3 0-0 8.Na4 Nc5 9.Nc5 Bc5 10.0-0 Qe8) 7.Nf3 0-0 8.Qc2 g6 9.0-0 Nc5 10.a3 Bc3; C3) 6.Qb3 Na6 (6...a5 7.Nf3 Na6 8.Ne4 0-0 9.a3 Nc5 10.Nc5 Bc5; 6...Bc3 7.Bc3 Nd7 8.d4 ed4 9.ed4 c5 10.Nf3 cd4) 7.Nd5 Bc5 8.Nf3 Bb6 9.d4 ed4 10.Nd4 Nc5; C4) 6.Nf3 Na6 (6...Nbc6 7.Be2 0-0 8.Qb3 Be6 9.0-0 Rb8 10.Nd5 Ba5; 6...0-0 7.Qb3 Nbc6 8.Be2 Be6 9.0-0 Rb8 10.Nd5 Ba5) 7.Be2 Bc3 8.Bc3 Nc5 9.d4 Ne4 10.Bb2 ed4; D) 5...Bc3 D1) 6.dc3 Na6 (6...d6 7.Bd3 Nd7 8.Ba3 f5 9.Nf3 Nf6 10.Bc2 Be6 ; 6...0-0 7.Nf3 Na6 8.Ba3 d6 9.Bd3 b6 10.Be4 Rb8) 7.Ba3 d6 8.Bd3 0-0 9.Nf3 b6 10.Be4 Rb8; D2) 6.Bc3 Nbc6 (6...d5 7.cd5 Qd5 8.Nf3 Nbc6 9.Qa4 Be6 10.e4 Qc5; 6...Na6 7.Nf3 0-0 8.Qc2 d6 9.Bd3 f5 10.Be2 f4) 7.Nf3 d5 8.Qb3 Be6 9.Be2 0-0 10.0-0 dc4; E) 5...Na6 E1) 6.Be2 0-0 (6...d5 7.Qb3 Bc3 8.Qc3 e4 9.Nh3 Bh3 10.gh3 0-0; 6...Nc5 7.Nf3 0-0 8.0-0 d5 9.d4 Bc3 10.Bc3 Ne4) 7.Nf3 d5 8.Qb3 Bc3 9.Qc3 Nc5 10.cd5 b6; E2) 6.Nf3 0-0 (6...Nc5 7.Be2 0-0 8.0-0 Bc3 9.Bc3 d6 10.d4 ed4; 6...d6 7.Be2 0-0 8.0-0 Be6 9.d4 Nf5 10.a3 Ba5) 7.Qc2 d6 8.Bd3 f5 9.Be2 f4 10.Bd3 Bf5.

5.Be2 Nbc6 6.Nf3 d5 7.a3 Bc5 8.d4 ed4 9.ed4 Bb6 10.0-0 dc4 11.Bc4 Bg4 12.d5 Na5 13.Qa4 Bd7 14.Qb4 Nc4 15.Qc4 a6 (15...Bf5 16.Nc3 Qd6=) 16.Re1= Bb5 (16...Kf8 17.Nc3+=) 17.Qe4 (17.Qb3 Bc5+/–) 17...Bc5 18.a4 Bd7 19.Ba3 Ba3 20.Na3 Kf7 21.Nc4 Bf5? (21...Nf5 22.d6 Nd6 (22...cd6? 23.Qd5 Kf8 24.Nd6 Nd6 25.Qd6 Kf7 26.Rad1+–) 23.Qd5 Kg6+=) 22.Qf4+/– Bg6 (22...Qd5? 23.Qc7 Qd8 24.Qc5+–) 23.Ng5 Kg8 24.Ne6 Nd5 25.Qf3 (25.Nd8 Nf4 26.Nb7 Kf7–/+) 25...Qd7 26.Rad1 c6? (better is 26...Re8 27.Qd5 Qd5 28.Rd5 b5 29.ab5 ab5+–) 27.Nb6! Nb6 (27...Qe8 28.Rd5 cd5 29.Qd5+–) 28.Rd7 Nd7 29.Qb3 (29.Qb3 b5 30.Nd8 Kf8 31.Nc6+–) 1–0. aspasio – fitahiana, net–chess.com, 2013.

5.Nf3 A) 5...0-0 A1) 6.a3 Ba5 (6...Bc5 7.Nc3 d6 8.d4 ed4 9.ed4 Bb6 10.c5 Ba5) 7.Bd3 d6 8.Nc3 f5 9.Bc2 e4 10.Nd4 c5; A2) 6.Nc3 Na6 (6...Nbc6 7.Qb3 d6 8.Bd3 Be6 9.a3 Bc5 10.Qc2 h6; 6...d6 7.Bd3 Nbc6 8.0-0 f5 9.Be2 e4 10.Nd4 Nd4) 7.Qc2 d6 8.Bd3 f5 9.Be2 f4 10.Bd3 Bf5; A3) 6.Qb3 Nec6 (6...Nbc6 7.Nc3 d6 8.Bd3 f5 9.e4 Bc3 10.Bc3 fe4) 7.Bd3 d6 8.a3 Ba5 9.Nc3 f5 10.c5 Kh8; A4) 6.Bd3 d6 (6...Na6 7.Qc2 g6 8.0-0 Nc5 9.Nc3 Nd3 10.Qd3 d6; 6...Nbc6 7.Qc2 g6 8.a3 Ba5 9.h4 d6 10.h5 Bf5) 7.Nc3 Nbc6 8.0-0 Bc5 9.Ne4 f5 10.Nc5 dc5; B) 5...d6 B1) 6.Bd3 0-0 (6...Nd7 7.Qa4 Nc6 8.Qc2 g6 9.a3 Ba5 10.h4 Nc5; 6...Nbc6 7.Nc3 Bf5 8.Bf5 Nf5 9.Nd5 0-0 10.Qb1 Qd7) 7.Nc3 Nbc6 8.0-0 Bf5 9.Bf5 Nf5 10.Nd5 Nfe7; B2) 6.Nc3 Na6 (6...0-0 7.Bd3 Na6 8.Qc2 f5 9.Be2 f4 10.Bd3 Bf5 ; 6...Nbc6 7.Bd3 0-0 8.0-0 Bf5 9.Bf5 Nf5 10.Nd5 Nfe7) 7.Be2 Nc5 8.d4 Ne4 9.Qb3 Nc3 10.Bc3 Bc3; B3) 6.Qb3 Na6 (6...Nbc6 7.Nc3 Bf5 8.a3 Bc5 9.Nh4 Be6 10.Bd3 0-0; 6...Ba5 7.Nc3 0-0 8.Bd3 Na6 9.Ba3 Nc5 10.Bc5 dc5) 7.Be2 Nc6 8.a3 Nc5 9.Qc2 Ba5 10.Nc3 0-0; B4) 6.a3 Ba5 (6...Bc5 7.d4 ed4 8.ed4 Bb6 9.Bd3 Bf5 10.0-0 Nbc6) 7.Nc3 0-0 8.Be2 Nbc6 9.0-0 Be6 10.Qc2 Qd7; C) 5...Na6 C1) 6.a3 Ba5 (6...Bd6 7.Nc3 0-0 8.Qc2 c6 9.Be2 Bc7 10.0-0 d5) 7.Be2 0-0 8.0-0 d5 9.d4 ed4 10.ed4 c5; C2) 6.Nc3 0-0 (6...Nc5 7.d4 ed4 8.Nd4 0-0 9.Be2 Ne4 10.Ndb5 a6; 6...d6 7.d4 0-0 8.Be2 ed4 9.Nd4 Nc5 10.0-0 Bd7) 7.Qc2 d6 8.Bd3 f5 9.Be2 f4 10.Bd3 Bf5; C3) 6.Qa4 Nc6 (6...Kf7 7.c5 Nc6 8.a3 Ba5 9.Bc4 Kf8 10.Ba6 ba6; 6...c6 7.Be2 0-0 8.0-0 d6 9.d4 Qa5 10.Qa5 Ba5) 7.Qc2 Nc5 8.a3 Ba5 9.Nc3 d6 10.Be2 0-0; C4) 6.Be2 0-0 (6...Nc5 7.0-0 0-0 8.d4 ed4 9.ed4 Ne6 10.a3 Ba5; 6...d5 7.0-0 0-0 8.cd5 Qd5 9.a3 Ba5 10.d4 e4) 7.a3 Ba5 8.0-0 d5 9.d4 ed4 10.ed4 c5; D) 5...e4 6.a3 (6.Nd4 0-0 7.Nc3 Bc3 8.dc3 Nbc6 9.Qc2 Ne5 10.Qe4 c5) 6...Ba5 (6...Bc5 7.d4 ef3 8.dc5 0-0 9.Nc3 fg2 10.Bg2 Nbc6; 6...Bd6 7.Nd4 Nbc6 8.Nc3 f5 9.d3 ed3 10.Bd3 0-0) 7.Nd4 0-0 8.Nb3 Nbc6 9.Na5 Na5 10.Nc3 f5; E) 5...Nbc6 E1) 6.a3 Ba5 (6...Bc5 7.Nc3 d6 8.Bd3 0-0 9.0-0 f5 10.e4 Ng6) 7.Nc3 0-0 8.Qb3 d6 9.Be2 Be6 10.0-0 Qd7; E2) 6.Nc3 0-0 (6...d6 7.Bd3 0-0 8.0-0 Bf5 9.Bf5 Nf5 10.Nd5 Qd7; 6...Bc3 7.Bc3 d5 8.d4 ed4 9.Nd4 0-0 10.Nc6 bc6) 7.Bd3 f5 8.e4 fe4 9.Be4 d6 10.0-0 Bf5; E3) 6.Qc2 d6 (6...Bc5 7.Nc3 d6 8.Ne4 Bf5 9.a3 d5 10.cd5 Qd5; 6...Ba5 7.Bc3 Bb6 8.Bd3 g6 9.0-0 d5 10.cd5 Nd5) 7.Nc3 0-0 8.Be2 Bf5 9.Ne4 d5 10.cd5 Nd5; E4) 6.Bd3 d5 (6...d6 7.a3 Ba5 8.0-0 f5 9.e4 fe4 10.Be4 Bf5; 6...0-0 7.Qc2 g6 8.a3 Bc5 9.h4 d6 10.h5 Bf5) 7.cd5 Nd5 8.Qc2 Be6 9.Bh7 Qe7 10.Bg6 Bf7.

4.a3 Qb6 5.e3 c5 (5...a5 6.b5=) 6.b5 (6.Nc3 cb4 7.Nd5 Qd6+=) 6...a6= 7.a4 (7.Nc3 Ne7+=) 7...ab5 8.ab5 (worse is 8.cb5 d5+=) 8...Ra1 9.Ba1 Qa5 (9...d6 10.d4+=) 10.Nc3+= Nc6? (10...d6 11.Be2+=) 11.Nd5?? (11.bc6 dc6 12.Nf3 Be6+–) 11...Nge7? (11...Nce7 12.Bc3 Qd8 13.Ne7 Ne7 14.d4 cd4 15.ed4 ed4 16.Qd4+=) 12.Bc3?? (12.bc6 dc6 13.Nc3 Nf5+–) 12...Qa3?? (better is 12...Nb4+=) 13.bc6+– Nd5 (13...dc6 14.Ne7 Be7 15.Bd3+–) 14.cd7 (14.cd5 dc6 15.dc6 bc6+–) 14...Bd7 15.cd5 Ba4 (15...b5 16.Qc2+–) 16.Qa1 (16.Qb1 Qb3 17.Qb3 Bb3 18.Bb5 Kf7+–) 16...Qb3 (16...Qa1 17.Ba1 Bd6 18.Ne2+–) 17.Be2 c4 (17...Bd6 18.f4! 0-0 19.fe5 Be5 20.Bd1 Qd1 21.Qd1 Bd1 22.Kd1+–) 18.Bh5 g6 19.Be2 (19.Bg4 Be7+–) 19...Bb4 (19...Be7 20.f4 ef4 21.ef4+–) 20.Bb4 (20.Nf3 Kf7+–) 20...Qb4 21.Nf3 0-0 22.0-0 Rd8 (22...Bc2 23.Rc1 Bd3 24.Bd3 cd3 25.Qa2+–) 23.Rb1 Qd2 (23...Bb3+–) 24.Nd2 (24.Nd2 b5 25.Bc4+–) 1–0. GuestNTSW – Paly, freechess.org, 2017.

4.Qa4 Na6 5.a3 A) 5...Kf7 6.Nc3 (6.Nf3 d5 7.cd5 cd5 8.e3 Ne7 9.Nc3 Be6 10.Be2 Nc8 11.d4) 6...Ne7 7.Nf3 d5 8.e3 Be6 9.c5 Qd7 10.Ba6 ba6 11.Qa6; B) 5...Ne7 6.Nc3 (6.Nf3 d5 7.Nc3 Nc7 8.cd5 Ned5 9.e3 Kf7 10.Qc2 a5 11.ba5; 6.e3 Nc7 7.Nc3 d5 8.cd5 Ned5 9.Nf3 Kf7 10.Be2 a5 11.ba5; 6.e4 Nc7 7.Nf3 a5 8.b5 Ng6 9.d4 ed4 10.Nd4 Bc5 11.Nd2) 6...d5 7.Nf3 Nc7 8.cd5 Ned5 9.Nd5 Qd5 10.Qc2 e4 11.Nd4.

4.Qa4 Qb6 5.a3 d6 (5...Nh6 6.Nc3 d6 7.Nf3 Nd7 8.e3 Be7 9.Qb3 f5 10.Be2 Qc7 11.0-0; 5...Na6 6.Nc3 Kf7 7.Qc2 d6 8.Nf3 Ne7 9.e3 d5 10.c5 Qc7 11.Be2; 5...Be7 6.Nc3 Na6 7.c5 Nc5 8.bc5 Bc5 9.0-0-0 Ne7 10.Nf3 Bf2 11.e3; 5...Kf7 6.Nc3 (6.Nf3 d5 7.Nc3 Be6 8.e3 Ne7 9.c5 Qc7 10.Be2 Nd7 11.0-0; 6.e3 d5 7.Nc3 Ne7 8.Nf3 Be6 9.Be2 Nd7 10.c5 Qc7 11.0-0) 6...d6 7.Nf3 Na6 8.Qc2 Ne7 9.e3 d5 10.c5 Qc7 11.Be2) 6.e3 (6.Nc3 Kf7 7.Nf3 Na6 8.Qc2 Ne7 9.e3 d5 10.c5 Qc7 11.Be2; 6.Nf3 Be6 7.e3 Nd7 8.Nc3 Be7 9.Bd3 Nh6 10.0-0 f5 11.h3) 6...Bd7 (6...Bf5 7.Nc3 Nd7 8.Nf3 Nh6 9.e4 Be6 10.Bd3 Be7 11.0-0) 7.Nc3 f5 (7...Ne7 8.Nf3 Na6 9.Be2 0-0-0 10.0-0 Kb8 11.Bd3) 8.Nf3 e4 9.Ng5 (9.Nd4 Nf6 10.Be2 c5 11.Ndb5) 9...Nf6 (9...h6 10.Nh3 Nf6 11.Be2) 10.Qb3 (10.c5 Qd8 11.d4) 10...Qd8 (10...Qc7 11.Be2) 11.Be2 Be7 (11...h6 12.Nh3+=) 12.0-0+= h6 13.Nh3 Be6 14.d3 d5 15.cd5 Nd5 16.Qc2 0-0 17.Rad1 Nd7 18.de4 fe4 19.Nd5 Bd5 20.Nf4 Rc8 21.Bg4 Bd6 (21...Rf4 22.ef4 Rb8 23.Bf5+–) 22.Nd5 cd5 23.Be6 (better is 23.Qb3!? Rc6 24.b5+–) 23...Kh8+/– 24.Qe2 Qe7 25.Qg4 Rc2 26.Bg7! (26.Bd7?! Rb2 27.Rd5 Rd8+=; 26.Rd5?! Rb2 27.Bd7 Rd8+=) 26...Qg7 27.Qg7 (worse is 27.Bd7 Qe5 28.g3 Qf6+/–) 27...Kg7 28.Bd7 Ra2 (28...Rd8!? 29.Be6 Ra2 30.Bd5 Ra3 31.Bb7 Rb3 32.Be4 Rb4+–) 29.Rd5+– Bc7 30.a4 (30.Bf5 Rf7+–) 30...Bb6 31.a5?? (better is 31.h3+–) 31...Raf2?? (better is 31...Rff2! 32.Re1 Rg2 33.Kh1 Rh2 34.Kg1 Rag2 35.Kf1 Rc2–+) 32.Rf2+– Be3 33.Rdf5 (33.Bf5!? Re8+–) 33...Rd8 34.Bb5 Rd1 35.Bf1 Bd4 36.Kh1?? (better is 36.g4+–) 36...e3?? (better is 36...Bf2 37.g4 Bd4–/+) 37.Re2+– Kg6 38.Rf4 Kg5 (38...Be5 39.Rf3 Bd4 40.g4+–) 39.Rf3 Rb1 40.g3 Rb4 (40...Kg6 41.b5!+–) 41.Kg2 (41.Rf4 b6 42.h4 Kh5 43.ab6 ab6+–) 41...Ra4 (41...b6 42.h4 Kg6 43.Rc2+–) 42.Rf4 b5 43.ab6! ab6 (43...ab6 44.h4 Combination; 43...Bb6 44.h4 Double attack (44.Ra4 Pinning; 44.Ra4 Deflection)) 44.Re3! Be3 (44...Be3 45.h4 Double attack (45.Ra4 Pinning; 45.Ra4 Deflection)) 45.Ra4 1–0. Jacobi,Karl Heinz – Schulze,Ingo, Lueneburg distr–ch, 1995.

4.Qa4 Kf7 5.Nf3 Na6 (5...d5 6.cd5 cd5 7.Nc3 Ne7 8.e3 Nbc6 9.b5 Na5 10.Be2 Be6 11.d4) 6.a3 d5 7.cd5 cd5 8.e3 Ne7 9.Nc3 Be6 10.Be2 Nf5 11.0-0.

4.Qb3 Na6 5.a3= Nc7 (5...d6 6.Nf3=) 6.e3 d6 (6...d5 7.Nf3+=) 7.Nf3 (7.d4 Bf5=) 7...g6 (7...Be6 8.d4=) 8.Be2+= Bg7 (8...e4 9.Nd4+=) 9.Qc2 (9.d4 Bg4+=) 9...f5 10.d4 (10.0-0 Be6+=) 10...e4 11.Nfd2 Nf6 12.0-0 0-0 13.Nc3 b6 (13...d5 14.f3+=) 14.a4 c5 15.b5 (15.bc5 dc5 16.dc5 bc5+=) 15...Ne6 (15...cd4 16.ed4 Ne6 17.d5=) 16.Nd1 (16.d5 Ng5+=) 16...Bb7 (16...cd4 17.ed4 a6 18.a5=) 17.d5+= Nd5? (better is 17...Ng5+=) 18.cd5+– Bd5 19.Nc3 (19.Bg7 Kg7 20.Nc3 Bb7+–) 19...Bb7 20.Rab1 (20.Rfd1 d5+–) 20...d5+/– 21.f3 (21.a5 ba5 22.Rfd1 Rc8+/–) 21...Bh6 (21...Qg5 22.Nd1+/–) 22.f4 (22.Nd1 Qh4+/–) 22...g5 23.Rbd1 (23.g3!?+/–) 23...gf4= 24.Nde4 (better is 24.Nb3!? fe3 25.Bc4+=) 24...fe4+= 25.Nd5 Bd5 (25...Qd5 26.Rd5) 26.Bc4 fe3 (better is 26...Rf5 27.Bd5 Rd5 28.Qe4 Nc7 (28...Rd1?? 29.Qe6 Kf8 30.Qh6 Ke8 31.Qh5 Kf8 32.Rd1+–) 29.Rd5 Qd5–+) 27.Bd5= Rf1 28.Kf1 Qf8 29.Kg1 Qf2 30.Qf2 ef2 31.Kf2 Re8 (31...e3 32.Ke2 Re8 33.g3=) 32.Be4+= Nd4 (32...Rf8 33.Ke1+=) 33.Re1 (33.Bd5 Kf8 34.Re1=) 33...Rf8= 34.Kg1 Bg5 35.Bd3 (35.Bc3 Bf6=) 35...h6 36.Re4 (36.Bc4 Kg7=) 36...Kg7 (36...Bf6 37.Bc1 h5 38.Bh6=) ½–½. Curado,Manuel Cruz – Abrantes,Joao, corr. XIV T Portugal, Prel, 1994.

4.c5 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 d6 8.d4 ed4 9.Qd4 (9.Bd4!? Na6 10.e4+=) 9...dc5–/+ 10.bc5 Qd4 11.Bd4 Nd7 12.e3 Bc5 13.Nf3 b5 14.Bd3 Ne7 15.0-0 (15.Kd2 Bb4 16.Bc3 Nd5–/+) 15...0-0 (15...Bd6 16.Nc3–/+) 16.Rc1 Bd6 17.Nbd2 Bb7 18.Ra1 Ra8 19.Rb1 Ba6 (19...Ne5 20.Ne5 fe5 21.Ne4–/+) 20.Ne4 Ba3 21.Rb3 Bb7 22.Rb1 Ng6 23.Bc4 Kf8 24.Be6 (24.Bd3!?–/+) 24...c5–+ 25.Ng3 (25.Nfd2 cd4 26.Bd7 de3 27.fe3 b4–+) 25...Ke7 26.Bd7 Kd7 (26...cd4 27.Bb5 Bf3 28.Nf5 Kf8 29.gf3 de3 30.fe3=) 27.Rb5 Bf3 (27...cd4 28.Rb7 Kc6 29.Rg7+/–) 28.gf3 Kc6 29.Rb1 cd4 30.ed4 Nh4 (30...Nh4 31.Kf1 Nf3–+) 0–1. Gross,Wilhelm – Bendig,Frank, corr SOK–87–03, 1988.

4.c5 b6 5.d4 ed4 6.Bd4 bc5 7.Bc5 Bc5 8.bc5 Qa5 9.Qd2 Qc5 10.e4 (10.Nc3 d5+=) 10...Ne7 (10...d5 11.ed5 Ne7 12.d6–/+) 11.Be2 (11.Nc3 d5+=) 11...0-0 (11...d5 12.Bh5 g6 13.Bf3–/+) 12.Nf3 Ng6 (12...d5 13.Nc3+=) 13.0-0= Qe7 14.Nc3 Kh8 (14...Ba6 15.Rfd1=) 15.Rad1 a5 16.Rfe1 a4 17.Nd4 Qd6 18.Qb2 Qc7 (18...Qc5 19.Nf3=) 19.Qc2 Attacks the isolani on a4 19...Qa5 20.g3 (20.Nf3 Ne5=) 20...c5 (20...Ne5 21.f4 Ng6 22.a3=) 21.Nf5 (21.Ndb5 Nc6=) 21...Ba6 22.f4 (22.a3 Ne5 23.f4 Be2 24.Re2 Nc4+=) 22...Bb7 (22...Be2 23.Re2 Re8 24.Nd6=) 23.Bh5 Ra6 (23...Nc6 24.Rd7 Bc8 25.Rdd1+=) 24.Bg6 hg6 25.Ne7 f5? (better is 25...Re8 26.Ng6 Kg8+/–) 26.Qg2+– (worse is 26.ef5 gf5 27.Rb1 Bf3=) 26...g5 27.fg5 c4 (27...g6 28.Qh3 Kg7 29.Qh6 Kf7 30.ef5+–) 28.g6 Rg6 29.Ng6 Kg8 30.Ne7 (30.Nf8!? Qc3 31.Qf1 Kf8+–) 30...Kf7 31.Ncd5 Re8 (31...Qc5 32.Kh1 Bd5 33.Nd5 fe4 34.Qe4 g6+–) 32.Qf2 Re7 33.Qf5 Ke8 34.Nf6! gf6 35.Qa5 (35.Qa5 Be4 36.Qa4+–) 1–0. Roczniak,Jan – Stepniewski, Poland.

5.ba5 Ra5 6.e4 d5 (6...Bc5 7.Bc3 Ra8 8.Ne2=) 7.cd5 (7.Bc3 Ra8 8.ed5 cd5=) 7...cd5 8.Bc3 Ra8 9.Bb5 Nc6 10.d4 Be6 (worse is 10...de4 11.d5 Nge7 12.dc6 Qd1 13.Kd1 Nc6 14.Ne2+/–) 11.de5 de4 (worse is 11...fe5 12.Qh5 Ke7 A) worse is 13.Be5 Qa5 (worse is 13...de4 14.Bc6 bc6 15.Nc3+=; worse is 13...Ne5 14.Qe5 Nf6 15.ed5 Qd5 16.Qc7 Nd7 17.Bd7 Qd7 18.Qe5=) 14.Nc3 Nf6–/+ (14...Ne5 15.Qe5 de4 16.Nge2+–); B) 13.Bc6 bc6 14.Qe5+/–) 12.Qc2 (12.Qh5 Bf7 13.Qe2 f5= (worse is 13...fe5 14.Qe4 Nf6 15.Bc6 bc6 16.Qc6 Nd7 17.Nf3+=)) 12...Bd5 (12...Qd5 13.Qe2+=) 13.Ne2 e3 (13...fe5 14.Be5 Qg5 15.Qb2=) 14.0-0 (14.Nf4 fe5 15.Be5 Ra5 16.Nd5 Qd5 17.Bc6 bc6=) 14...ef2 (14...Bg2 15.Rd1 Bd5+–) 15.Rf2= Be7 16.a4 (16.Bd4 Ra5 17.ef6 Nf6+=) 16...Kf7 (16...Rc8 17.Qb2=) 17.Bc6 Bc6 18.e6 (18.Nd4 Bc5 19.Qd1 Qd5+=) 18...Kf8 (18...Ke8 19.Nd4=) 19.Nd4 (19.Kh1 Qd6+=) 19...Bc5= 20.Qb2 Ne7 21.Nd2 Ra4 22.Ra4 Ba4 23.Ne4 b6 (23...Ba7!?=) 24.Qd2 h6 25.Kf1 (25.Qd3!?=) 25...Qd5+= 26.Rf4 Be8 27.Ne2 Bc6 28.Qc2?? (better is 28.Bd4–/+) 28...Ng6–+ 0–1. Kupec,Jan – Dvorak,Ladislav, CiF, 1996.

5.ba5 d5 6.cd5 cd5 7.Bc3=.

5.ba5 d5 6.e3=.

5.b5 Qb6 6.e3 d5 7.a4 (7.cd5!? cb5 8.d4+/-) 7...Be6= 8.Qh5 (8.cd5 cd5 9.d4 Nd7=) 8...Bf7 9.Qh4 g5 10.Qg4 Nd7 11.d4 (11.cd5 cd5 12.Nc3 Rc8=) 11...h5 (11...dc4 12.bc6 Bb4 13.Nc3 Qc6 14.Nf3-/+) 12.Qf5 (12.c5 hg4 13.cb6 ed4 14.bc6 bc6 15.Bd4 Bb4 16.Bc3 Nb6 17.Ne2-+) 12...e4 (12...Bb4 13.Nd2 dc4 14.de5 cb5-/+ (14...Ne5?! 15.Be5 Qc5 16.bc6=+)) 13.c5= Qd8 14.h4 gh4 (14...Ne7 15.Qh3=) 15.Nc3 Qe7 (15...Ne7 16.Qh3=) 16.Qh3 Be6 17.Qh4 f5 18.Be2 Qh4 19.Rh4 Ngf6 20.Nh3 Be7 21.Nf4 Bf7 22.Rh3 Ng4 23.Bc1 h4 24.Rb1 0-0-0? (better 24...Bg5+=) 25.bc6+- bc6 26.Ba6 Kc7 27.Rb7 Kc8 28.Bd2 Bc5 29.Ncd5 (29.Ne4 de4 30.Ba5 Bb6 31.Rb6 Kc7 32.Rb5 Kd6 33.Bb4 c5 34.dc5 Ke7 35.c6 Kf6 36.cd7 Rh6+-) 29...Bd5 30.Nd5 (30.Ba5!? Ndf6 31.Bd8 Rd8 32.Rb6 Kc7 33.dc5 Rb8 34.Rb8 Kb8 35.Rh4 Ne5+-) 30...cd5 31.Ba5 (31.dc5?! Nc5 32.Rb6 Na6 33.Ra6 Kd7=) 31...Bd6 (31...Rh6 32.Rb6 Kc7 33.Rh6 (33.dc5?! Nb6 34.Bb6 Rb6 35.cb6 Kb6=) 33...Bb6 34.Bb6 Nb6 35.Rh7 (worse 35.R6h4 Na4 36.Rh8 Nf6+-) 35...Kd6 36.Bb5+- (worse 36.R7h4 Na4 37.Rh7 Ke6+-)) 32.Rb6 (32.Rb5) 32...Kc7+- 33.Rb7 (better 33.Rb5 Nb6 34.Bb6 (34.Rb6?! Ra8+-) 34...Kd7 35.Bd8 Rd8 36.Rh4+-) 33...Kc6 (33...Kc8 34.Rb5) 34.Bd8+= Rd8 35.a5?? (better 35.Rb2 Be7 36.Bb7 Kc7 37.a5=) 35...Ra8-+ 36.Rh4 (36.Rd7 Ra6 37.Rf7-+) 36...Ra6 37.Rb2 Ra5 (37...Ne3 38.Ke2 Nc4 39.Ra2-+) 38.Rh7 (38.Rc2 Kb5 39.Ke2-+) 38...Ra1 39.Ke2 f4 (better 39...Nb6 40.f3 Nc4 41.fg4 Nb2 42.gf5 Bg3-+) 40.f3 (40.f3 Ne3 41.fe4 de4 42.Rh6-+). jhonores (2190) - RikSalomons (2155), Rated Blitz game, lichess.org, 2020.

5.c5 d4 6.e3 d3 7.Qb3 Nh6 (better is 7...e4+=) 8.Bd3+/– g6 9.Nf3 Bg7 10.0-0 Nf7 11.Bc4 0-0 12.Bf7 Rf7 13.d4 e4 14.Nfd2 Qe7 15.Qc2 f5 16.f3 Be6 17.fe4 Nd7 18.e5 Bd5 19.Nc3 Qg5 20.e4 Qe3 (20...fe4 21.Rf7 Bf7 22.Nde4+–) 21.Kh1 fe4 22.Rf7 (22.Nd5 cd5 23.e6 Re7+–) 22...Kf7 23.Rf1 (23.Nde4!? Bf8+–) 23...Kg8 24.Nce4 Re8 25.Nd6 Re7? (25...Qe2 26.Rg1 Rf8 A) 27.Nb7?? Rf2 28.Ne4 Qc2 (28...Be4?! 29.Qe2 Re2 30.Nd6=) 29.Nf2 Qb2–+; B) 27.e6+/–) 26.Qd1 (26.N2c4!? Qg5+–) 26...Qd3 27.Nf3 Qc4 (27...Qd1 28.Rd1 h6 29.Rf1+–) 28.Ng5 (28.Nc4 Bc4 29.Rf2 b5+–) 28...b5 (28...Qa6 29.Nge4+–) 29.Ba1 (better is 29.Nc4 Bc4 30.Rf4+–) 29...Qb3 30.Qe1 (better is 30.Qb3!? Bb3 31.Nge4 h6+–) 30...Qa3 31.Qf2 Qb4 32.e6 (better is 32.Nh7 Be5 33.de5 Rh7 34.Qg3+/–) 32...Be6?? (better is 32...Nf6=) 33.d5 (33.Ne6 h6+–) 33...cd5?? (better is 33...Bd5 34.Bg7 Kg7–+ (worse is 34...Rg7 35.Qe2 Nf6 36.Qe5+/–)) 34.Bg7 (34.Ne6 Bf6 35.Bf6 Re6 36.Bc3 Qc3 37.Qf7 Kh8 38.Qe6+–) 34...Kg7?? (34...Qc5 35.Qh4 A) 35...Rg7?? 36.Ne6 g5 37.Qh5+– (37.Nc5?! gh4 38.Nf5 a5+–); B) 35...h5+–) 35.Ne6 Kh6 36.c6 Ne5 37.c7 Qd6 38.c8Q Qe6 39.Qe6 Re6+– 40.Qf4 Kg7 41.Qf8 1–0. chevin – MasterofDisaster, Live Game Caissa's Web, 2004.

5.cd5 cd5 6.d4 Bd6=.

5.cd5 cd5 6.e3 a5 7.b5=.

5.cd5 cd5 6.e3 Bd6 7.Nf3 (7.d4 Nc6=) 7...Ne7+= 8.Nc3 Be6 (8...0-0 9.Nb5+=) 9.d4 (9.Nb5 0-0=) 9...Nd7 (9...e4 10.Nd2=) 10.Be2 (10.de5 fe5 11.Ng5 Bg8+=) 10...a6 (10...e4 11.Nd2=) 11.b5 (11.de5 fe5 12.Ng5 Bg8+=) 11...0-0 (11...e4 12.Nd2+=) 12.0-0 (12.de5 Ne5 13.Nd4 Bf7=) 12...Qb6 (12...e4 13.Nd2+=) 13.a4 Rac8 (13...ab5 14.Nb5 Bb8 15.Ba3=) 14.Qb3 (14.a5 Qa7+=) 14...a5= 15.Ba3 (15.Rac1 Rf7=) 15...e4 (15...Ba3 16.Ra3 Rc7 17.Raa1=) 16.Nd2 f5 (16...Ba3 17.Qa3 Rfe8 18.Rac1=) 17.Bd6 (17.Rac1 Nf6=) 17...Qd6 18.Qa3 (18.f3 f4 19.fe4 fe3 20.Nd5 Bd5 21.Rf8 Nf8 22.Qe3 Bf7+=) 18...Qa3+= 19.Ra3 b6 20.f4 (20.g3 Rc7=) 20...Rc7 21.Rc1 Nf6 22.h3 (22.Ra2 Rb8=) 22...Rfc8 23.Kf2 (23.Rb3 Ne8+=) 23...h5 24.Ke1 (24.Rb3 h4=) 24...g6 (24...h4 25.Kf2+=) 25.Kd1 (25.Kf2 h4=) 25...Kf7 (25...h4 26.Na2=) 26.Na2 (26.Rb3 Rg8=) 26...Rc1 27.Nc1 Rc7 (27...h4 28.Rb3=) 28.Na2= Nc8 29.Rc3 Rc3 30.Nc3 Nd6 31.Kc2 Ke7 (31...h4 32.Nf1=) 32.Kb3 (32.g3 Kd7=) ½–½. Melich,Jindrich (2170) – Barglowski,Filip, Stary Smokovec op, 1996.

5.cd5 cd5 6.e3 Be6 7.d3 (7.Bb5 Bd7 8.Bd7 Nd7=) 7...Bd6+= 8.d4 e4 9.Bb5 Nd7 10.Bd7 (10.Qh5 g6 11.Qd1 a6+=) 10...Qd7–/+ (worse is 10...Bd7 11.Qh5 g6 12.Qd5+=) 11.Nc3 Ne7 12.f3 ef3 13.Nf3 0-0 14.0-0 Nf5 15.e4? (better is 15.Qd3+=) 15...Ne3–+ 16.Qe2 (16.Qd3 Nf1 17.Rf1 de4 18.Ne4 Rac8–+) 16...Nf1 17.ed5 Nh2 (17...Bd5!? 18.Qf1 Be6 19.d5–+) 18.de6 (18.Qe6!? Qe6 19.de6 Nf3 20.gf3+=) 18...Nf3–/+ 19.gf3 Qe7 (19...Qe7 20.Nd5 Qe8–/+; 19...Qe8 20.d5–/+) 0–1. Landgraf,Manfred – Kaschner,Armin, corr SOK–89–58, 1990.

5.ba5 Qa5 6.e4 Bc5 +=.

5.ba5 d5 =.

5.b5 a4+= 6.Qf3 cb5 7.cb5 d5 +=.

5.b5 a4+= 6.Qg3 cb5 7.cb5 d5 (7...Ne7 8.f4 ef4 9.Qf4+=) 8.e3 (8.d4 e4=) 8...Ne7+= 9.Be2 (9.a3 Nf5 10.Qf3 Be6+=) 9...Qc7 (9...Nf5 10.Qh3+=) 10.Bh5 (10.Na3 Nf5 11.Qf3 Be6+=) 10...g6 11.Bd1 (11.Be2 Be6+=) 11...Nf5 (11...Nd7 12.Nc3+=) 12.Qf3 a3 13.Bc3 d4 14.g4 (better is 14.ed4 ed4 15.g4 Qe5 16.Qe2 dc3 17.gf5 cd2 18.Nd2 Bf5 19.Rc1–/+) 14...Nh4?? (better is 14...dc3 15.Nc3 Nd6–+) 15.Qf6+= dc3 (15...Ng2 16.Kf1 Bg7 17.Qg5 Ne3 18.fe3 dc3 19.Nc3+=) 16.Nc3 (16.Qh8!? c2 17.Bc2 Qc2 18.Qe5 Be7 19.Nc3+=) 16...Ng2+= 17.Kf1 Bg7 (17...Ne3!? 18.fe3 Bg7+=) 18.Qg5= Ne3 19.Qe3 Be6 (19...0-0 20.Kg2=) 20.Nh3 (20.Bf3 0-0=) 20...0-0 (20...Qd7 21.Ke1=) 21.Ng5 Kh8 (21...Bc4 22.Ke1=) 22.h4 (22.Ne6 Qc4 23.Kg2 Qe6+/–) 22...Bg8 (22...Bd5 23.Nd5 Qc4 24.Kg1 Qd5+/–) 23.h5 White is in command 23...gh5 24.Rh5 Nd7 25.Bb3 (better is 25.Ke1!?+/–) 25...Nf6= 26.Rh4 Bb3 27.ab3 The passed pawn on a3 will quickly become a dangerous weapon 27...Qd6 (27...Bh6 28.Ke1 Bg5 29.Qg5=) 28.Nce4 (28.Ke1 Kg8+=) 28...Qd4 29.Rh7?? White gets strong play along the open h–file (better is 29.Qd4 ed4 30.Nc5+=) 29...Nh7–/+ 30.Qh3 Do you see the mate threat? 30...Qa1 31.Kg2 Rf2 32.Nf2 Qb1 33.Nfe4 Kg8?? (better is 33...Qe4! 34.Ne4 Kg8+=) 34.Qh7+– Kf8 35.Qf5 Kg8 36.Qe6 Kh8 37.Nf7 Kg8 38.Ne5 Kh7 39.Ng5 Kh8 40.Nef7 Kg8 Black threatens to counter with Bd4 41.Ne5 1–0. Miquel – Fernandez Diaz, Catalunya, 1993.

5.b5 a4+= 6.Qg3 d5 7.cd5= cb5 (7...cd5!? 8.d4 e4+=) 8.e4+= b4 9.a3 (9.Nf3 Qc7 10.Kd1 a3+=) 9...Nc6?? (better is 9...Qc7 10.Bd3 Qd7=) 10.dc6+– (10.dc6 Qd6 11.ab4 Qb4 12.Nc3 bc6 13.Ba3+–) 1–0. Kretschmar – Mir, 1984.

5.b5 a4+= 6.Qg3 Ne7 7.f4 ef4 8.Qf4 +=.

5.Nc3 d4 6.Ne4 f5 7.Ng3 Be6 8.e3 Na6 9.ed4 ed4 (9...Bb4 10.a3 Ba5 11.Qb7+=) 10.Nf3 Qd7 (better is 10...c5!?=) 11.Nd4+/– Nf6 (11...Bb4 12.0-0-0 Nf6 13.Ne6 Qe6 14.Qe3 Qe3 15.fe3+=) 12.Qe3 f4? (better is 12...Kf7 13.b5 Nb4 14.bc6 bc6+/–) 13.Qe6+– Qe6 14.Ne6 fg3 15.b5 (15.hg3?! Kd7 16.Nf8 Rhf8+–) 15...Nb4 16.Nc7 Kd8 (16...Kd7 17.Na8 Nc2 18.Kd1 Na1 19.Ba1+–) 17.Na8 Nc2 18.Kd1 (18.Ke2!? Na1 19.Ba1 Ba3+–) 18...Na1 19.bc6 bc6 20.hg3 (20.Ba1 Ng4 21.Bd4 Nf2 22.Bf2 gf2+/–) 20...Kc8 21.Ba1 Be7 22.Be5 Ng4 23.Bd4 c5 (23...Kb7 24.Be2 Bf6+–) 24.Be2 cd4 25.Bg4 Kb8 26.Bf3 (26.Ke2 Bb4 27.Bf3 a5+–) 26...h6 (26...d3 27.Re1 Bf6 28.c5+–) 27.Ke2 Kc8 28.Rb1 (28.Rb1 Bd6 29.Kd3+–) 1–0. Woschkat,Karl Heinz (2010) – Buettner,Fritz (2065), LM–91–125B corr CiF, 1992.

5.e3 Bf5 6.Nf3 +=.

5.e3 Bg4 6.Be2 Be2 7.Ne2 dc4 8.Qc4 =.

5.e4 d4 (better 5...de4!? 6.Nc3 f5-/+) 6.c5 (6.Be2 a5=) 6...a5 7.Bc4 Qc7?? (better 7...Nh6 8.a3 ab4 9.ab4 Ra1 10.Ba1 b6=+) 8.Bg8+- a4? (better 8...ab4 9.a3 ba3 10.Ba3 Bc5+-) 9.Qc4+- b6 (9...Ra6 10.a3+-) 10.cb6 Qb6 (10...Qd7+-) 11.Qf7 (11.Qf7 Kd8 12.Qf8 Kc7 13.Qg7 Nd7 14.Qh8+-) 1-0. GuestJLXB – MosesG, freechess.org, 2020.

6.a4 Na6 7.c5= Nc7 8.d4 ed4 9.ed4 (9.Bd4 Bf5=) 9...g6 10.Nf3 Bh6 (10...Qe7 11.Be2+=) 11.Be2+= Ne7 12.0-0 0-0 13.Bc1 g5 14.Nc3 White plans b5 (14.Re1 Bg7+=) 14...Bg7 15.h3 Qd7 16.b5 Ng6 (16...g4 17.hg4 Bg4 18.Re1+=) 17.b6 (17.Re1 Rfe8+/–) 17...ab6+= 18.cb6 (18.Qb6 g4 19.hg4 Bg4+=) 18...Na6= 19.a5 Rfe8 20.Ba6 (20.Re1 g4 21.hg4 Bg4=) 20...Ra6 21.Na4 Bf8 (21...Ra5 22.Nc5 Ra1 23.Nd7 Bd7 24.Ba3 Rf1 25.Kf1=) 22.Bd2 (22.Nc5 Bc5 23.dc5 Qe7=) 22...Bh3 23.Ne1 (23.gh3!? Qh3 24.Qc3+=) 23...Bg4 (23...Bf5 24.Nc5 Bc5 25.dc5–/+) 24.f3 (24.Nd3 Raa8 25.Nac5 Qg7+=) 24...Bf5–/+ 25.Bb4 (25.Nd3 Bd3 26.Qd3 Kg7–/+) 25...Bd6 26.Ra2 Bg3?? (26...Raa8 27.Bd6 Qd6 28.Nc5–/+) 27.Nc5 Qg7 28.f4 gf4 (better is 28...Bf4 29.Na6 Be3 30.Rff2 ba6–/+) 29.Na6+= Re3 (29...ba6 30.Rb2+=) 30.Qb2 (30.Qa4 Bd3 31.Nc5 Bf1–+) 30...Bd3 (30...ba6 31.Qc1 Rb3 32.Rb2 Rb2 33.Qb2+=) 31.Nc5+/– (31.Nd3?? Qh6 32.Rf3 Qh2 33.Kf1 Qh1) 31...Bf1 32.Kf1 Qh6 33.Nf3 Qh1 34.Ng1 f3 35.a6 ba6 (better is 35...Re2 36.Qe2 fe2 37.Re2–+) 36.b7 Nh4 (36...Nh4 37.b8Q Bb8–+) 0–1. Zschalich – Pohlus, Leipzig, 1985.

6.a4 Qb6 7.b5+=.

6.Nc3 Ne7 7.Nf3 Nd7 8.d4 e4 9.Nd2 f5 10.a4 Nf6 11.g3 (11.c5 Qd7=) 11...Qc7 12.c5 g5 13.b5 h5 14.a5 White plans b6 14...h4 15.Be2 hg3 16.fg3 Bf7 17.b6 ab6 18.cb6 Qb8 19.a6 f4 (19...ba6!? 20.Ba6 Be6=) 20.gf4+= gf4 21.a7 Qc8 22.Rf1?? (22.ef4 Qh3=) 22...Nf5 (22...f3–/+) 23.Nb5?? (23.ef4 Rh2 24.Na2–/+) 23...Rh2?? (better is 23...cb5 24.Rf4 Bh6 25.Bb5 Kd8–+) 24.Nc7+– Kd8 25.Rf4 (25.Na8!? Qa8 26.Rf4 Be6+–) 25...Bh5+/– 26.Bh5 Nh5 27.Rf5 (better is 27.Re4 Nd6 28.Re6 (28.Na8 Rh1 29.Ke2 Rh2 30.Kd1 Ne4+/–) 28...Rh1 29.Kf2 Ra1 30.Ba1 Ra7 31.ba7 Kc7 32.e4+–) 27...Bd6?? (27...Qf5 28.0-0-0 Qc8+/–) 28.0-0-0 (28.Na8 Bg3 29.Kd1 Qf5+–) 28...Ng3 29.Rg5 (29.Rg5 Ne2 30.Kc2 Bc7 31.Rg8 Kd7 32.Rc8 Kc8 33.Qb4+–; 29.Na8?! Nf5 30.Nc7 Bc7+–) 1–0. Smolanski – Prokopp,Heinz, EU–ch corr ICCF corr, 1985.

6.c5 a5 7.Nc3 (7.d4 b6 8.de5 ab4 9.cb6 Qb6+=) 7...ab4 8.Qb4 Qc8 (8...Nd7!? 9.Qb7 A) 9...Bc5?! 10.Qc6 Kf7 11.Nb5= (11.Nd5? Rc8 12.Qb7 Rb8–+); B) 9...Ne7–/+) 9.d4= e4 (9...b5 10.a4 Na6 11.Qb3 Nc5 12.dc5–/+) 10.Be2 Na6 11.Qb3 Be7 12.0-0-0 (12.Na4!? Ra7 13.Nb6=) 12...Nh6 (12...Nc5 13.dc5 d4 14.Bg4 Bb3 15.Bc8 dc3 16.Bd7 Kf8 17.ab3 cb2 18.Kb2 Bc5 19.Kc3–/+) 13.h3 (13.Na4 0-0+=) 13...0-0 (13...Nc5 14.dc5 d4 15.Bc4 Bc4 16.Qc4 dc3 17.Bc3–+) 14.Na4+= Bd8 15.Nb6 Bb6 16.cb6 (16.Qb6 Qc7+=) 16...c5–/+ 17.Kb1 (17.Kd2 c4 18.Qc3 Qc6–/+) 17...c4 18.Qb5 Nf5 19.Bg4 (19.Ba3 Rf7–/+) 19...Nd6–+ 20.Be6 (20.Qa5 Bg4 21.hg4 Qc6–+) 20...Qe6 21.Qa5 Rfc8 (better is 21...Nc8!?–+) 22.Ne2–/+ Nc5 23.Qc5 Rc5 24.dc5 Nb5 25.Nf4 Qc6 26.Rd5 c3 (26...c3 27.Bc1 Na3 28.Ba3 g5–/+) 0–1. Langguth,Wilhelm – Schild, corr ICCF EU–H–GT–100, 1985.

6.d4 dc4 7.Bc4 Bc4 Black gets in control 8.Qc4 Qd5 9.Qd5 cd5 10.de5 (10.a3 Nc6=) 10...Bb4 (10...Nc6 11.a3 Ne5 12.Be5 fe5 13.Nc3=) 11.Ke2 Nd7 12.Nf3 (12.a3 Be7 13.e6 Nc5=) 12...Rc8 13.Kd3 (13.ef6 Ngf6 14.Nbd2 Ne4=) 13...Nc5 (better is 13...fe5 14.Ne5 Ngf6=) 14.Kd4 (better is 14.Ke2=) 14...Ne7–/+ Threatening Rd8 15.ef6 (15.a3 fe5 16.Ne5 Nb3 17.Kd3 Bd6–+) 15...gf6–+ Black intends Rd8 16.Ba3? (better is 16.a3 Ba5 17.Ra2–+) 16...Nc6 17.Kd5 b5 18.Bb4 Nb4 19.Kd4 Nc2 20.Kc3 Na4 (worse is 20...Na1 21.Kb2 Rg8 22.g3–+) 21.Kd2 Na1 22.Na3 b4 23.Ra1 ba3 (23...ba3 24.Nd4 Kf7–+) 0–1. Pennell,Gary – Wall,Bill, Taylorsville, NC, 1975.

6.d4 Nd7 7.Nd2=.

6.Nf3 Na6 7.c5=.

6.Nf3 Bd6 7.c5 Bc7=.

6.Nf3 Bd6 7.d3 Ne7 8.Be2 (8.c5 Bc7=) 8...0-0 (8...dc4 9.dc4 Qb6 10.a3=) 9.0-0 Nd7 10.Nbd2 (10.c5 Bc7=) 10...Rc8 (10...b6 11.a3=) 11.a4 (11.c5 Bc7=) 11...Ng6 (11...b6 12.a5=) 12.Rac1 White prepares c5 12...Qe7 13.c5 Bb8 14.d4 e4 15.Ne1 f5 16.f3 (16.f4 ef3 17.Nef3 Rce8=) 16...f4 17.fe4 fe3 18.Qe3 Bf4 19.Qc3 de4 20.Nc2 (20.Ne4? Bd5 (20...Bc1?! 21.Qc1 Bd5 22.Nc3+=) 21.Ng3 Bg3–+) 20...Nf6 21.Rcd1 Nd5 22.Qa3 Bd2 23.Rd2 Qg5 24.Bc1 e3 25.Rdd1 Ngf4 (25...Ngf4 26.Bf3 e2–+) 0–1. Van Esbroeck,Dirk – Kaden,Frank, CiF, 1999.

6.Nf3 Bd6 7.Be2 dc4 8.Bc4 Bc4 9.Qc4 Qd7 (9...Qe7 10.a3+=) 10.0-0 b5 (10...Qe7 11.b5=) 11.Qb3 (11.Qe4 a5=) 11...Nh6 (11...Qe7 12.Bc3=) 12.d4 Nf7 (12...e4 13.Nfd2 f5 14.Nc3+=) 13.Nbd2 a5 14.a3 Qe7 (14...ed4 15.Nd4 0-0 16.Ne4+=) 15.Nh4 (15.de5 Ne5 16.Be5 fe5+/–) 15...g6 16.Bc3 (16.Ne4 ed4 17.Nd6 Nd6 18.Bd4 Nc4+=) 16...a4 (16...e4 17.ba5 f5 18.g3+=) 17.Qc2+= f5 (17...0-0 18.Rad1+=) 18.de5 Be5 19.Be5 Ne5 20.Nhf3 0-0 21.Ne5 Qe5 22.Rfd1 Re8 23.Nf3 Qf6 24.Rac1 Ra7 25.Rd4 Rc7 26.Rcd1 Qe7 27.Rd6 Rec8 28.Qa2 (28.Qc5 Na6 29.Qb6 Nb8+/–) 28...Kf8 (28...Kh8 29.Qb2 Kg8 30.Qe2+/–) 29.Nd4 Rd7 30.Ne6 Ke8 31.R6d4 (31.Ng5 Qd6 32.Rd6 Rd6 33.Qf7 Kd8 34.Ne6 Re6 35.Qe6 Kc7 36.Qe7 Kb6 37.Qh7 Rd8+–) 31...Rd4+/– 32.ed4 Qf6 (32...Kf7 33.Re1 Qh4 34.Ng5 Kf6 35.Nf3+–) 33.d5+– Kf7 34.Nd4 (34.Nc5 Kg7 35.d6 Kh8+–) 34...Ke8 (34...Kg8!? 35.d6 Qf7 36.Qf7 Kf7+/–) 35.dc6+– Nc6? (35...Ke7+–) 36.Qg8 (36.Qg8 Qf8 37.Qe6 Ne7 38.Nb5+–) 1–0. Bendig,Frank – Van Esbroeck,Dirk, corr ICCF TT–4–90–14, 1991.

5.Ba3 Qa5 6.Qb3 c5 (6...Ba3 7.Na3 d6 8.Nc2–/+) 7.Bb4+= Qb4 8.Qb4 cb4 9.Be2 Ne7 10.Nf3 b6 11.d3 0-0 12.0-0 Bb7 13.Nbd2 a5 14.a3 (14.d4 Ng6+=) 14...Nbc6–/+ 15.Rfb1 d6 16.Ne1 Ng6 17.Nc2 Rfb8 18.h3 Nf4 19.Bf1 Ba6 (19...ba3!? 20.Rb6 Ra6 21.Ra6 Ba6 22.Na3 Rb2–/+) 20.g3 Ne6 21.ab4 ab4 22.Nb4 Nb4 23.Rb4 Nd4 24.Rab1 Draw agreed ½–½. matty722 – normn, ChessWorld.net, 2012.

5.Nc3 d6 6.a3 Bc5 7.Nf3 –/+.

5.Nc3 Ne7 6.Qh5 Ng6 7.Nh3 0-0 8.g3 (8.a3 Bc3 9.Bc3 d5–/+) 8...d5 (8...d6!?–/+) 9.cd5 Bc3 10.Bc3 (10.dc3 cd5 11.Rd1 Be6 12.ed5 Bd5–/+) 10...cd5 11.Bg2 d4 12.Bb4 Re8 13.d3 (13.0-0 Na6 14.Rfb1 Be6–/+) 13...Nc6 (13...Be6 14.f4 Nc6 15.Bd2–+) 14.Bd2 Be6 15.f4 Bf7 16.Qe2 a5 (16...Rc8 17.0-0–/+) 17.0-0 b5 18.f5 Nf8 (18...Nge7 19.Qg4 Kh8 20.Rab1–/+) 19.g4 (19.Qg4 Kh8–/+) 19...Nd7 20.g5 fg5 (20...Rf8 21.Rac1 Qb6 22.a3–/+) 21.Ng5–/+ Nf6 (21...Qf6 22.Rfc1–/+) 22.Nf7 Kf7 23.Bf3 (23.Qd1 b4–/+) 23...Rg8 (23...Rf8 24.Qd1 a4 25.Rb1–/+) 24.Kh1 (24.Qd1 a4+=) 24...Qd6 Black intends b4 25.Rg1 b4 26.Qg2 Ne7 27.Bd1 (27.Rac1 Ke8–/+) 27...a4 28.Rb1 Nc6 29.Qh3 Rh8?? (better is 29...Rgc8–/+) 30.Rg7!+– Ke8 (30...Kg7 Decoy to g7 31.Qh6) 31.Qh6 (better is 31.Bg5 Ne7 32.Qh4+–) 31...b3?? (better is 31...Rf8+/–) 32.Bh5+– (32.ab3?! Rf8 33.Bg5 Ra7 34.Bh5 Kd8 35.Ra7 Na7 36.ba4 Nc6+–) 32...Kd8 33.Bg5 (33.ab3?! Rf8 34.Bg5 Ra7 35.Ra7 Na7 36.ba4 Nc6+–) 33...Nb4 (33...Rf8 34.Bf7 (worse is 34.ab3 Ra7+–) 34...Rf7 35.Rf7 ba2 36.Ra1+– (36.Qf6 Qf6 37.Bf6 Ke8 38.Re7 Ne7–+)) 34.Qf6 (34.Qf6 Qf6 35.Bf6 Kc8 36.Rc1 Nc2 37.Be5+–; 34.Bf6 Kc8 35.Qc1 Nc2 36.ab3 ab3 37.Be5 Qe5+–) 1–0. Kuehn,Peter (2100) – Antoszkiewicz,Gerhard (2100), corr DDR–10ch sf4, 1978.

5.Nf3 Qb6 6.Qb3 d6 –/+.

4.a3 Be7 5.d4 e4 (5...ed4 6.ed4 d5 7.Bd3=+) 6.Qh5 (6.Qg4 f5 7.Qg7 Bf6=) 6...g6=+ 7.Qd5 f5 8.Qb5 (8.Bc4 Nh6-/+) 8...a6 9.Qb3 Nf6 10.d5 c6 11.c4 (11.Nc3 Qa5 12.Qa4 Qc5-/+) 11...cd5 12.cd5 Qa5 13.Bc3 Qd5?? (better 13...Qc7=) 14.Qd5+- Nd5 15.Bh8 Bf6 (15...b5 16.Ne2+-) 16.Bf6 Nf6 17.Nc3 d5 (17...b5 18.Nge2+-) 18.Rd1 Be6 19.Nge2 Nc6 (19...Nbd7 20.Nf4 Ke7 21.Ncd5 Nd5 22.Nd5 (22.Rd5?! Bd5 23.Nd5 Kd6+-) 22...Bd5 23.Rd5+-) 20.Nf4 Ke7 21.Nfd5 Nd5 22.Nd5 (22.Rd5?! Bd5 23.Nd5 Kd6+-) 22...Kf7 (22...Bd5 23.Rd5 b5 24.Be2+-) 23.Nc7 (23.Nb6 Re8+-) 23...Rc8 24.Ne6 Ke6 25.Bc4 Ke5 (25...Ke7 26.Bd5+-) 26.0-0 b5 27.Bd5 (27.Rd5!? Kf6 28.Rd6 Ke7 29.Re6 Kf8+-) 27…Ne7 (27...Na5 28.f4 ef3 29.Bf3+- (29.Rf3?! Rd8 30.Bb3 Rd1 31.Bd1 Nc4+-)) 1-0. aravind555 – Coffein, lichess.org, 2018.

4.a3 Bf8 5.Bd3 (5.d4 ed4 6.Bd4 c5+=) 5...d5 (5...Nh6 6.f4 d6 7.Nf3+=) 6.Qh5+= g6 (better is 6...Ke7!?+=) 7.Bg6+= Kd7 (7...hg6 8.Qh8 Pinning (8.Qh8 Deflection)) 8.Bh7 (better is 8.Bf5 Kd6 9.Bc8 (9.Bh7? Qe7–+) 9...Qc8 10.e4+=) 8...Ne7? (better is 8...Kc6 9.Qg6 Be6+=) 9.Bf5 Kc6 (9...Nf5 10.Qh8 (10.Qf5?! Ke7 11.Qd3 Be6+=) 10...Kc6 11.h4+–) 10.Qh8 Nf5 11.Ne2 (11.h4 Nd6+–) 11...d4 (11...Be6 12.Nbc3+–) 12.Qg8 1–0. Wall,Bill – Guest9546, internet, 2004.

4.Bb5 a6 5.Bd3 g6 –/+.

4.c3 Bc5 5.Nf3 d6 (5...Be7 6.d4 e4 7.Nfd2=+) 6.Bd3 (6.d4 Bb6=+) 6...Ne7 (6...d5 7.Be2-/+) 7.0-0 (7.Bc2 d5-/+) 7...0-0 (7...d5 8.Be2-/+) 8.Bc4 (8.Bc2 d5-/+) 8...Kh8 (8...d5 9.Bb3-/+) 9.d4=+ ed4 (9...d5 10.Bb3 Bd6 11.de5 fe5 12.Bd5 Nd5 13.Qd5-/+) 10.ed4 Bb6 11.Nbd2 Nbc6 12.Nb3 Na5 13.Bd3 Nb3 14.ab3 Nc6 15.Qc2 (15.Re1 Bg4=) 15...h6 (15...Bg4 16.Nd2= (16.Bh7? f5-+)) 16.Nh4 White gets the initiative 16...Rf7 (16...Re8 17.Bg6 Rf8 18.Rfe1=) 17.Bc4 d5 18.Qg6 Qe7?? (better 18...Be6!? 19.Bd3 Qg8+=) 19.Bd3?? (better 19.Bd5 Be6 20.Be4+-) 19...f5+- 20.Qh5 (20.Rfe1 Qf8+-) 20...Kg8 (20...Qf6!?=) 21.Nf5+- Bf5 22.Bf5 Qf6 23.Bg6 Re7 (better 23...Rd7!?+-) 24.Qd5+- Re6?? (better 24...Kh8 25.Qh5 Re6+-) 25.Bf5 Rae8 26.Rae1 (26.Be6 Re6 27.Rfe1 Kf7+-) 26...Nd8? (26...Qf5 27.Qf5 Re1+-) 27.Be6 (better 27.Re6 Ne6 28.Re1 c6 29.Be6 Kh8+-) 27...Re6 (27...Ne6 28.Qb7 Rd8+-) 28.Re6 Ne6 29.Rd1 (better 29.Re1 c6 30.Qe6 Qe6 31.Re6 Kf7+-) 29...Kh7 (29...c6 30.Qc4+-) 30.Qb7 Nf4 (30...Qg6 31.Qf3+-) 31.Qe4 (31.Qf3 c6+-) 31...Kh8 (31...Ng6 32.Ba3+-) 32.Re1 Qg5 (32...c5 33.Bc1 Ng6 34.Qd5+-) 33.Qe8 (better 33.Bc1 Nh3 34.Kf1 Qb5 35.Re2 Qb3 36.Bh6 Qd1 37.Re1 Qh5+-) 33...Kh7 Do you see the mate threat? 34.g3 Nh3 (34...Nd3 35.Qe4 Qg6 36.Qg6 Kg6 37.Re2+-) 35.Kg2 (35.Kf1 Qf5 36.Qe4 Qe4 37.Re4 Ng5+-) 35...Nf4 36.Kf1 Nd3 37.Qe4 Qg6 38.Qg6 Kg6 39.Re2 Kh7 (39...Nb2 40.Rb2 Kf7 41.f4+-) 40.c4 (40.Ba3 c5 41.Rd2 cd4 42.cd4 Nf2 43.Kf2 a5+-) 40...a5 (40...Nb2 41.c5 Bc5 42.dc5 Nd3+-) 41.Bc3 (41.c5 Bc5 42.dc5 Nc5+-) 41...Kg6 (41...c6 42.Re6+-) 42.Re6 Kf7 (42...Kf5 43.Rc6 Ke4 44.f3 Kf3 45.c5+-) 43.Rb6 (better 43.Rc6 Ke8 44.c5+-) 43...cb6 44.d5 (better 44.Bd2!? a4 45.Ke2 Nf2 46.Kf2 ab3+-) 44…Nc1 (44...Nc1 45.b4 Nb3+-; 44...g5 45.h4+-). aravind555 – RussianGrossmeister, lichess.org, 2018.

4.Bc3 Nc6 5.Be5?? (better is 5.Bb4 Nb4 6.Nc3=+) 5...fe5–+ 6.Bb5 Nf6 7.Bc6 (7.c3 Be7–+) 7...bc6 8.c3 Bd6 9.Qa4 a5 10.Qc4 (10.d3 Ba6 11.Qc2 Nd5–+) 10...Ba6 11.Qf7 (11.Qa4–+) 11...Kf7 12.Na3 Ba3 13.Nh3 Ne4 14.g4 Qh4 15.Nf4 Qf2 16.Kd1 Qd2 0–1. Anden – Caissa, Live Game Caissa's Web, 2004.

4.Nc3 c6 5.Bc4 (5.a3 Bc3 6.Bc3 d6=+) 5...d5-/+ 6.Bb3 Be6 7.e4 Qd7 8.ed5 cd5 9.Nge2 Nc6 10.0-0 Nge7 11.a3 Bc3 12.Nc3 d4 13.Be6 Qe6 (13...dc3?? 14.Bd7 Kd7 15.Bc3+-) 14.Nb5 Qd7 15.a4 0-0 16.Ba3 a6 (16...Rfd8 17.f4-/+) 17.Nd6 Rfd8 (17...Nc8 18.Ne4 Rd8 19.Nc5-/+) 18.c4 (18.Qb1!? Qe6 19.Nb7=+ (19.Qb7?? Rdb8-+)) 18...Nc8-/+ 19.Ne4 N6e7 (19...f5 20.Ng3-/+) 20.c5 Qc6 21.d3 Nd5 22.Qb3 Nce7 (22...Kh8 23.a5-/+) 23.Nd6 The backward pawn on b7 becomes a target (23.f4 ef4 24.Rf4 Rab8-/+) 23...Rd7 (23...b6 24.Rab1-/+) 24.Rab1 Rb8 (24...Nc8 25.Nc4-/+) 25.Qc4 (25.f4=+) 25...Rf8 (25...Nc8 26.Ne4-/+) 26.Rb2 (26.Rb6 Rd6 27.Rc6 Rc6 28.Re1=) 26...g5?? (better 26...Kh8!?-/+) 27.Rfb1 (27.Rb6 Rd6 28.Rc6 Rc6 29.Rb1=) 27...Rb8 28.Qb3 The pressure on the backward pawn b7 grows (better 28.Rb6!? Rd6 29.Rc6 Rc6 30.a5=) 28...Kg7 29.Nb7?? (better 29.a5=+) 29...Nc3-+ 30.Rc1 (30.Qc4 Nb1 31.Nd6 Rd6 (31...Na3 32.Qf7 Kh6 33.Qf6 Kh5 34.Rb8 Rd6 35.Qe7 Qc5 36.Qh7 Rh6 37.Qf7 Kh4 38.h3 g4 39.Qf5 Qc1 40.Kh2 Qh1 41.Kh1 Rg6 42.Rh8 Rh6 43.Rh6) 32.Rb8 Na3-+) 30…Rdb7 (30...Rdb7 31.Qc2 Ned5 32.Rb7 Qb7-+; worse 30...Qb7 31.Qc4 Qc7 32.Rcc2-+) 0-1. aravind555 (1665) - parshickow (1660), lichess.org, 2018.

4.c4 Ba5 5.f4 d6 6.Bd3 Be6 7.Ne2 Qd7 8.0-0 Na6 9.Ng3 Nc5 10.Bc2 (10.Be2!?–/+) 10...Bc4–+ 11.d3 Ba6 12.Rf2 0-0-0 (12...ef4!? 13.ef4 d5–/+) 13.d4+= ed4 (13...ef4 14.ef4 Ne6+=) 14.ed4+= Ne6 15.f5?? (better is 15.d5 Bb6 16.de6 Bf2 17.Kf2+=) 15...Ng5–/+ 16.Bb3 d5 17.Nd2 Kb8 18.Rc1 0–1. Ricbour,Jeremy (2180) – Cotonnec,Melkior (2275), Issy les Moulineaux tt, 2009.

4.c4 Nc6 5.Nc3 Nge7 6.Nf3 d6 (6...0-0 7.a3 Bc3 8.Bc3–/+) 7.Be2 Be6 8.0-0 0-0 (8...d5 9.Qb3–/+) 9.d4 ed4 10.ed4 d5 11.c5 b6 12.a3 Ba5 13.h3 (13.Qc2 bc5 14.dc5 d4=+) 13...Rb8 14.Rb1? (better is 14.cb6!? Rb6 15.Na4–/+) 14...bc5–+ 15.dc5 (better is 15.Ba1 Rb1 16.Nb1–+) 15...Ne5?? (better is 15...Rb2 16.Rb2 Bc3–+) 16.Nd4=+ Bf7 17.Ba1 c6 18.Na2 (18.Rb8 Qb8 19.f4 Nd7–/+) 18...Qc7 (18...Rb1 19.Qb1 Bg6 20.Qb3–/+) 19.Nb4 Bb4 (19...Rfe8 20.Rb2 Bb4 21.Rb4=+) 20.ab4 a5 21.Bc3 ab4 22.Bb4 Rfe8 (22...Bg6 23.Rb2 Bf5 24.Re1=+) 23.Qd2 N7g6 (23...Nc4 24.Bc4 dc4 25.Rfd1=+) 24.Nf5= Be6 25.Nd6 Rf8? (better is 25...Re7!?=) 26.f4+/– Nf7 27.f5 Nd6 28.cd6 (28.fe6? Ne4 29.Qe3 Qe5–+) 28...Qa7 (28...Qb6 29.Kh1 c5 30.fe6 Qd6 31.Ba3+/–) 29.Kh1+– c5 (29...Bf5 30.Rf5 Rfd8 31.Rd1+–) 30.fe6 (30.fg6?! cb4 31.gh7 Kh7 32.Rb4 Qd7 33.Rb8 Rb8 34.Qd3 f5=) 30...Rb4 31.Rb4 (31.Qd5 Nf4 32.Rf4 Rb1 33.Kh2 Qb7 34.Qc5 Rc8+–) 31...cb4 32.Qd5 Qa8 (32...Kh8 33.Bd3 Rd8 34.Bg6+–) 33.Qc4 (33.Qa8 Ra8 34.e7 Kf7 35.Bc4 Ke8 36.Bb5 Kf7+–) 33...Rb8 (33...Ne5 34.Qb4 Rb8+–) 34.e7 Kh8 35.Qe6 (better is 35.Bf3 Qa5 36.Re1+–) 35...Qc6 36.Bf3 Qe8 37.Re1 (better is 37.Bh5 Rb7 38.Rc1+–) 37...Ne5 (37...Nf8 38.ef8B Qf8+–) 38.Re5! fe5 39.d7 1–0. Ranby,Hans – Diener,Rudolf, corr 3GMM–23, 1995.

4.c4 d5 5.Qb3 Bc5 6.cd5 Ne7 7.Nc3 Bf5 (7...Nd7 8.Ne4=) 8.e4 (8.Qb7 Nd7 9.Qa6 Rb8+=) 8...Bc8= 9.Nf3 Nd7 10.Bc4 Bd6 11.0-0 0-0 12.d4 ed4 13.Nd4 Kh8 (13...Nc5 14.Qc2+=) 14.Ne6+/– Qe8? (better is 14...Nc5 15.Nd8 Nb3 16.ab3 Rd8+/–) 15.Nf8 Qf8 16.Nb5 Ng6 17.Nd6 Qd6 18.Rac1 Nc5 (18...Nb6 19.Rfe1+–) 19.Qe3 Nd7 20.f4 b6 (20...Nb6 21.Bb3 Bg4 22.e5+–) 21.Bb5 (21.Ba3 Nc5 22.e5 Qd8 23.Bc5 bc5 24.Qc5 a6+–) 21...Nc5 22.Ba3 Bb7 (22...Rb8 23.Bc5 bc5 24.Qc5+–) 23.Bc5 bc5 24.Qc5 Kg8 (24...a6 25.Bd3 Rc8 26.Qd6 cd6 27.Rc8 Bc8 28.Rb1+–) 25.Qc7 (25.Qc7 Qb6 26.Qb6 ab6 27.Rc7+–) 1–0. GuestPBNJ – GuestLCJG, freechess.org, 2017.

4.Bc4 Ne7 5.Nf3 d6 6.a3 Bc5 7.d4=+ ed4 8.Nd4 Bd4 9.Bd4 Nf5 10.Qe2 d5 11.Bd3 0-0 12.0-0 Re8 13.Bf5 Bf5–/+ 14.Nc3 Nc6 15.Qb5=+ Rb8 16.Nd5 Nd4 17.ed4 c6 18.Nf6? Qf6–+ 19.Qc4 Kh8 20.Rfe1 Re1 21.Re1 h6 22.Qe2? Qf8 23.h3 Re8?? 24.Qe8+– Qe8 25.Re8 Kh7 26.Re7 b5 27.Ra7 Bc2 28.g4 Kg6 29.Rc7 Be4 30.f4 h5 31.f5 Kg5 32.Rg7 Kf4 33.f6 Bd5 34.g5 Kf5 35.h4 Ke4 36.Re7 Kd4 37.Rd7 Kc4 38.Rd5! Kd5 39.f7 1–0. guest77 – Smallmind, ICC, 1999.

4.Bc4 g6 5.Nf3 (5.Qf3 Qe7=+) 5...d5-/+ 6.Bb3 c5 7.a3 Ba5 8.0-0 c4 9.Ba2 Bg4 10.Nc3 (10.d3 Qb6 11.Bc1-/+) 10...Bf3 (better 10...e4!? 11.h3 ef3 12.hg4 fg2 13.Kg2 h5-/+) 11.Qf3= Bc3 12.Bc3 Nd7?? (better 12...e4 13.Qf4 g5=) 13.Qd5+- Ne7 (13...Nb6 14.Qb7 Qd7 15.Qd7 Kd7 16.f4+-) 14.Qc4 Threatening mate: Qf7 14...Nb6? (better 14...Rf8+-) 15.Qf7 Kd7 16.Be6 Kc6 (16...Kc7 17.Qf6 Nc6 18.Be5 Ne5 19.Qe5 Qd6 20.Qg7 Nd7 21.Bc4+-) 17.Qf6 Qc7 (17...Rf8 18.Qe5 Nd7 19.Qe4 Kc7+-) 18.Be5 Qd8 19.Bg4 (19.Bf7 Kb5 20.Rfb1 Ka4 21.Qh4 Qd4 22.Qd4 Ka5 23.Qc5 Ka6 24.Qb5) 19...Kd5 20.Bf3 Kc4 (20...Kc5 21.Bd4 Qd4 22.Qd4 Kb5 23.Qb4 Ka6 24.c4 Nc4 25.Bb7) 21.d3 (21.Qh4 Kb5 22.Qb4 Ka6 23.Be2 Qd3 24.Bd3 Nc4 25.Bc4 b5 26.Qb5) 21...Kb5 22.Qh8 (22.Bb7 Qd3 23.a4 Kc4 24.Qh4 Kc5 25.Qe7 Kc4 26.Ba6 Kd5 27.Qd6 Ke4 28.Bd3) 22...Qh8+- 23.Bh8 Rh8 24.Bb7 Kc5 25.d4 Kc4 (25...Kd6 26.Ba6+-) 26.Rfd1 (26.Ba6 Kd5+-) 26...Na4 (26...Kb5 27.Rab1 Ka5 28.Rb4+-) 27.Be4 (better 27.Rd3 Rf8+-) 27...Nc3 28.Rd3 (28.Bd3 Kd5+-) 28...Rb8 (28...Ne4 29.Rb1+-) 29.a4 (better 29.f3!? Nf5+-) 29...Rb2 (29...Ne4 30.d5 Nf5 31.g4+-) 30.g3 (better 30.f3!? Rc2 31.d5 Ne4 32.Rd4 Kc5 33.fe4 Kd6+-) 30...Rc2? (better 30...Ne4 31.d5 Nd6+-) 31.Ra3 (31.Rc3 Rc3 32.Rb1 Rb3+-) 31...Nc8?? (31...Ne4 32.d5 Nf5 33.d6 Nfd6 34.Rd4 Kc5 35.Rad3 Rc1 36.Kg2=) 32.Kg2 (32.f3 Nd6 33.Rdc3 Rc3 34.Bd5 Kd3 35.Rc3 Kc3+-) 32...Nd6?? (32...Ne4 33.Rd1=) 33.Bb7 (better 33.Rdc3 Rc3 34.Bd5 Kd3 35.Rc3 Kc3 36.Kf3+-) 33...Kd3= 34.Ba6 Nc4?? (34...Ke4 35.a5=) 35.Kf3?? (better 35.Rb3+-) 35...Kd2?? (better 35...Rb2 36.a5 Rb8=) 36.Bc4+- Nb1 (36...Rb2 37.a5+-) 37.Rd3 (better 37.Ra2 Ra2 38.Ba2 Nc3+-) 37...Ke1 38.Bb3 (38.Bb5 Rf2 39.Kg4 Nd2+-) 38...Nd2? (better 38...Rf2 39.Kg4 Nd2+-) 39.Kf4 Nb3 (39...Rc8 40.Be6 Rf8 41.Ke5 Rf2 42.h3+-) 40.Rb3 Rf2 Black gets in control 41.Ke4 Rh2 (41...Ra2 42.d5 Ra4 43.Ke5+-) 42.d5 (42.Rb1 Kf2 43.Rb2 Kg3 44.Rh2 Kh2+-) 42...Rg2 (42...Rd2 43.Rd3 Rb2 44.d6+-) 43.Kf4 (43.Rb1 Kf2 44.Rb2 Kg3 45.Rg2 Kg2 46.d6 Kf1 47.d7 a5 48.d8Q Kg2 49.Qd1 g5 50.Qe2 Kg3 51.Qf3 Kh2 52.Qf2 Kh3 53.Kf3 g4 54.Kf4 h5 55.Qg3) 43...Rd2 44.e4 Kf2 45.Rf3 (45.Ke5 h5+-) 45...Ke2 46.Ke5?? (better 46.Re3 Kf2 47.Rc3+-) 46...Kf3-+ 47.Ke6 (47.Kf6 Ke4 48.Kg7 Rd5 49.Kh7 Kf5 50.Kg8 Kf6 51.a5 Rd8 52.Kh7 a6 53.g4 Ra8 54.g5 Kf7 55.Kh6 Rh8) 47...Ke4 48.d6 (48.Kf6 Rd5 49.Kg7 Rd7 50.Kh6 Kf3 51.Kg5 Kg3 52.Kf6 h5 53.Kg6 h4 54.Kg5 h3 55.Kf5 h2 56.Ke6 Rd1 57.a5 h1Q 58.Ke7 Qe4 59.Kf6 Rf1 60.Kg7 Qg4 61.Kh6 Rh1) 48...g5 49.Ke7 h5 50.d7 h4 51.d8Q Rd8 52.Kd8 hg3 (52...hg3 53.Ke7 g2-+) 0-1. aravind555 (1855) - Edcan (1825), lichess.org, 2020.

4.Bd3 d5 5.Qh5 Ke7 6.Bh7 Nh6 7.Bd3 Ng4 (7...e4 8.Be2-/+) 8.Qg6 (better 8.Bh7=+) 8...d4?? (8...Qg8 9.Bf5 A) 9...Nh2? 10.Bc8 Qc8 11.Qg7 Kd6 12.Qf6 Kc5 13.c3 Nf3 14.Nf3 (14.Qf3?! Rh1 15.cb4 Kb4 16.a3 Kc5+-; 14.gf3?! Rh1 15.d4 Kb5 16.a4 Ka5 17.cb4 Kb4+-) 14...Rh1 15.Ke2+-; B) 9...Bf5 10.Qf5 B1) 10...Rh2? 11.Rh2 (11.Qg4 Bd2 12.Nd2 Rh1=+) 11...Nh2 12.Qh5+-; B2) 10...Nh2=) 9.Bf5?? (better 9.Qg7 Kd6 10.ed4 ed4 11.Bd4+-) 9...Bf5=+ 10.Qf5 Qd7 (10...Rh2? 11.Rh2 Nh2 12.Qh7+-) 11.Qd7 Kd7 12.ed4 ed4 13.Bd4 Nc6 14.h3?? (better 14.Be3=+) 14...Nd4-+ 15.c3 (15.f3 Rae8 16.Kf1 Nc2-+) 15…Nc2 (15...Nc2 16.Kf1 Bd6-+) 0-1. aravind555 (1605) - Rasol1369 (1630), lichess.org, 2019.

4.Bd3 Bf8 5.Qh5 g6 6.Bg6! hg6 7.Qh8 Ne7 8.Qf6 Nbc6 9.Ba3 d6 10.Nc3 Bf5 11.Nge2 Qd7 12.Ng3 Qe6 13.Qe6 Be6 14.0-0 Rd8 15.Nge4 Kd7 16.Nf6 Kc8 17.Nfe4?? d5?? 18.Be7 Be7 19.Ng3 d4 20.Nce4 Bd5 21.a4 g5 22.a5 a6 23.c3 d3 24.Rab1 Na5 25.Rb2 b6 26.Rfb1 Nc4 27.h3 Nb2–/+ 28.Rb2 a5 29.f3 Ba3 30.Rb1= Be7 31.Nf2 a4 32.Nd3 a3 33.Nb4 Bc4 34.Nf5?? Bb4–+ 35.Rb4 a2 36.Ra4 Rd2 37.Ne7 Kd7 38.Nf5 Rd1 39.Kf2 a1Q 40.Ra1 Ra1 41.e4 Ra3 42.Ne3 Rc3 43.Nd1 Rc2 44.Ke3 Rg2 45.Nc3 b5 0–1. wojtekkk – slaweczek69, internet, 2011.

4.Be2 d5 5.c4 c6 6.Nf3 c5 7.cd5 Qd5 8.Nc3 Bc3 9.Bc3 e4–/+ 10.Qa4 Bd7 11.Bc4? Ba4–+ 12.Bd5 Bc6?? 13.Bb3?? ef3–+ 14.0-0 fg2 15.Rfe1 Bf3 16.d4 b6 17.e4 cd4 18.Bd4 Ne7 19.Re3 Nec6 20.Bc3 Bh5 21.e5 Nd7 22.ef6+– Nce5 23.fg7 Rg8 24.Bg8 0-0-0 25.Be6 Nc4 26.Rg3 Nd6 27.g8Q Rg8 28.Rg8 Kc7 29.Bd7 Kd7 30.Re1 Bg6 31.Rg7 Nf7 32.Kg2 Kc6 33.Rg8 Kd5 34.a3 Be4 35.Kg3 h5 36.Bb4 Ne5 37.Rg5 a5 38.Bc3 h4 39.Kh4 Kc4 40.Be5 Bd5 41.Rc1 Kb3 42.Rg3 Ka4 43.Bc7 b5 44.Rc5 Bb3 45.Rg4 b4 46.Ra5 1–0. gtate (1870) – xodinho (1700), net–chess.com, 2003.

4.Ne2 Nc6 5.Ng3 Nge7 (5...d5 6.a3 Bc5 7.d4-/+) 6.Qh5 Ng6 (6...g6 7.Qh6=+) 7.Bc4 (7.a3!? Bc5 8.d4=+) 7...d5-/+ 8.Nf5?? (better 8.Bd3 Nce7 9.a3-/+) 8...dc4 9.Ng7 Kf7 10.Qh6 (10.Nf5-+) 10...Bf8 11.0-0 Bg7 12.Qh5 b6 (12...Be6 13.e4-+) 13.d3 (13.Qf3 Bb7-+) 13...c3 (better 13...Nb4 14.Na3 cd3 15.Rfd1-+) 14.Bc3 Bb7 (14...Be6 15.f4 ef4 16.Rf4-+) 15.Nd2 Qd5 16.Nf3 (16.Rfb1 Ke8-+) 16...Nce7 (better 16...Qc5 17.Bd2 Qc2 18.Rfd1-+) 17.Bb4 (17.Ne1 f5-+) 17...Rhg8 (better 17...e4 18.Qd5 Nd5 19.de4 Nb4 20.a3-+) 18.c4 (18.e4 Qd7-+) 18...Qc6 (18...Qd3!? 19.Be7 Ke7 20.Rfd1-+) 19.d4 (19.Be7 Ke7 20.Qh7 f5-+) 19...ed4 20.Nd4 (20.Be7 Ke7 21.ed4-+) 20…Qg2 0-1. aravind555 – TKMforchess, lichess.org, 2018.

4.Ne2 Ne7 5.Ng3 0-0 6.Bc4 (6.a3 Ba5-/+) 6...Kh8 (6...d5 7.Be2-/+) 7.Bd3 d5 8.f3 (8.0-0 Nd7-/+) 8...c5 9.Nc3 (9.a3 Ba5-/+) 9...d4 10.Nce4? (better 10.ed4 cd4 11.Nce2-+) 10...f5 11.Ng5 Ng6 (better 11...Nd5 12.f4 ef4-+) 12.f4 Qe7?? (better 12...h6 13.Qh5 ef4 14.Qg6 Qg5 (worse 14...hg5 15.Qh5 Kg8 16.Bc4 Qd5 17.Bd5 Be6 18.Be6 Rf7 19.Qf7 Kh7 20.Qh5) 15.Qg5 hg5 16.ed4 Be6-/+ (16...fg3 17.hg3 Kg8 18.Bc4 Rf7 19.0-0-0+=)) 13.Nf5?? (13.Qh5 h6 14.Qg6 hg5 A) 15.Bf5?! Bf5 16.Nf5 Qf6 17.Qf6 Rf6=+ (worse 17...gf6 18.c3 dc3 19.dc3+=); B) 15.Nf5 Bf5 16.Bf5 Rf5 17.Qf5 gf4 18.ef4 ef4 19.Kd1+-) 13...Bf5-+ (13...Rf5?! 14.Bf5 Bf5 15.Qh5-+) 14.Bf5 Rf5 15.Qg4 (15.Qh5 Nf8 16.g4 Rf6-+) 15...Rf8 (15...Qd7!? 16.c3 Ba5 17.Qh5 Rg5 18.Qg5 de3 19.de3-+) 16.Qh5 Threatening mate... how? 16...ef4?? (better 16...h6 17.Qg6 hg5-+) 17.Qh7. aravind555 (1755) - Alexander1936 (1705), lichess.org, 2020.

4.Ne2 Nh6 5.Ng3 0-0 6.Bd3 d5 7.Bc3 (7.c4 d4 8.ed4 ed4-/+) 7...Bc5 8.0-0 d4 (8...Nc6 9.Bb5-/+) 9.ed4 ed4 10.Bb2 f5 (10...Nc6 11.Ne4 Bb6 12.Bc4 Kh8 13.Re1-/+) 11.Na3 f4 12.Ne4 Bb6 13.Nc4 c5 (13...f3 14.g3-/+) 14.Nb6=+ Qb6 (14...ab6 15.Bc4 Kh8 16.f3=+) 15.Bc4 (15.Ba3 Rf5=) 15...Kh8=+ 16.Rb1 (16.Ba3 Qc6 17.Nc5 f3=+) 16...Qg6 (better 16...f3 17.Re1 Qg6-/+) 17.Bd3? (17.Nc5 f3 18.g3 Qh5-+) 17...Bf5?? (better 17...c4 18.Bc4 Qe4-+) 18.Nc5=+ Nc6 19.Bf5 Nf5 (19...Rf5 20.Nd3 (20.Nb7?? f3 21.g3 Qg4-+) 20...f3 21.Ne1 fg2 22.Ng2-+) 20.Nb7 (better 20.f3!?=) 20...Nh4-/+ Threatening mate... how? 21.g3 f3?? (21...Ne5 22.Ba3 Nhf3 23.Kg2 Qc6-+) 22.Re1 (22.Kh1!?+=) 22...Qg4 The mate threat is Qh3 23.Re7?? (better 23.Kh1=+) 23...Qh3 (better 23...Ne7 24.Ba3 Nhf5-+) 24.Qf1 Qg4?? (24...Qf1 25.Kf1 Ne7 26.gh4 Rfc8-+) 25.Rd7?? The isolani on d4 becomes a target (25.Rc7 Rfc8 26.Rc8 Rc8+-) 25...Nf5 (better 25...Qd7 26.gh4 Qb7-+) 26.Nc5+= h5 (better 26...Rab8+=) 27.Ne6 (27.a3 h4 28.h3 Qg6+-) 27...Rfe8 (better 27...Ng3 28.hg3 Qe6-/+) 28.Nd4?? (better 28.Nc7 Rad8 29.Rd8 (worse 29.Ne8 Rd7 30.Re1 h4=) 29...Rd8 30.Re1+-) 28...Nfd4 29.Bd4? (29.Rb7 Rad8-+) 29...Nd4 (better 29...Qd7 30.Be3 Nd4 31.Bd4 Qd4-+) 30.Rbb7?? (30.Rc7-+) 30...Rg8 (30...Re1 31.Qe1 Qh3 32.Qe8 Re8 33.Rd4 Re1) 31.h3-/+ Qg5?? (31...Ne2 32.Kh2 Qg5-/+) 32.h4?? (better 32.Rd4 Rgb8 33.Rb8 Rb8 34.Qd3+-) 32...Qg4 (32...Qd2!? 33.Rb5 Ne2 34.Kh2-+) 33.Kh2-/+ Rae8 34.Qc4?? (better 34.Ra7 Re2 35.Rd5-/+) 34...Ne2 (34...Re1 35.Qg8 Kg8 36.Rg7 Qg7 37.Rg7 Kg7 38.c3 Ne2 39.a3 Rf1 40.g4 Rf2 41.Kh3 Rg2 42.d4 hg4) 35.Qg4 (35.Rd5 Re6 (35...Qc4?? 36.Rh5) 36.Qg4 hg4 37.Ra7 g5=+) 35...hg4= 36.Rb4 (36.Rb5!? Re6 37.Rh5 Rh6 38.Rg5=) 36...Rc8 (36...Rd8 37.Rb5 Rgf8 38.Rh5 Kg8-+) 37.Rg4=+ Rc2 38.Rg5 Threatening mate: Rh5 38...Kh7 39.Rh5 (39.a3 Rb2=) 39...Kg6 40.Rg5 (40.Rhd5 Ra8=) 40...Kf6 (40...Kh6 41.a3-/+) 41.Rd6 (41.Ra5!?=) 41...Ke7-/+ 42.Rdg6 (42.Ra6 Rd2 43.Ra7 Kd6-/+) 42...Rd2 43.Rg7 Rg7 44.Rg7 Kf6 (44...Kf6 45.Ra7 Nd4-/+) 0-1. aravind555 (1680) - Chupriyan123 (1650), lichess.org, 2020.

4.Be5? g6?? 5.Bg3 d5 6.c4 Bf5? (better is 6...d4!?=) 7.Qb3+/– a5 (7...Na6 8.a3 Bd6 9.Bd6 (9.Qb7 Nc5 10.Qd5 Ne7+/–) 9...Qd6 10.Qb7+/–) 8.cd5 (8.a3 Bd6 9.Bd6 cd6 10.Qb7 Nd7 11.Qd5 Ne5+–) 8...Ne7 (8...Nd7 9.Bb5+/–) 9.Bc4 (9.a3 Bd6 10.Qb7 Nd7+/–) 9...Bd6 (9...Be4 10.Nf3 Nd5 11.Nc3+=) 10.Qb7+/– Nd7 11.Nc3 (11.Bd6 cd6 12.Bb5 Rb8 13.Bd7 Bd7+=) 11...0-0 (11...Nb6 12.Bd6 cd6 13.Bb5 Kf7 14.Na4+=) 12.e4 (12.Qb5 Nb6 13.Bd6 Qd6 14.d3+/–) 12...Nc5? (better is 12...Rb8!? 13.Qa7 Nb6 14.ef5 Nc4 15.fg6 Ng6+/–) 13.Qb1+– Bd7 14.f4 (14.Qc2 Na6+–) 14...Na4 (better is 14...Re8+–) 15.e5 fe5 16.fe5 Bb4 (16...Nf5 17.ed6 Ng3 18.hg3 Qf6+–) 17.d6 Kg7 18.de7 Qe7 19.Qd3 (better is 19.Na4 Ba4 20.Nf3 Qc5+–) 19...Bd6 (19...Bc6 20.Nf3 Nb2 21.Qe2+–) 20.Qd4 (better is 20.Nd5 Qe8 21.Qe2+–) 20...c5 (20...Bc5 21.Qh4 g5 22.Qh5+–) 21.Qe3 White prepares the advance e6 (better is 21.Qd6 Qd6 22.ed6 Nb2+–) 21...Nc3 22.Qc3 Bc7 (22...Rae8 23.Nf3 Rf3 24.gf3 Be5 25.Be5 Qe5 26.Kf2+–) 23.0-0-0 (better is 23.e6 Rf6 24.Bc7 Be6+–) 23...Rab8 (23...Be6+–) 24.e6 (24.e6 Kh6 25.Bc7+–) 1–0. Bousquet,Christophe – Hausgaard,Olaf, IECC, 2004.

4.Nf3 Nc6 5.Bc4 Na5 6.Be2 Ne7 7.c3 Bd6 8.0-0 0-0 9.d3 c5 10.c4 Nac6 11.Nc3 Bb8 12.a4 d5 13.cd5 Nd5 14.Nd5 (better is 14.Qb3!? Be6 15.Qb7 Nc3 16.Bc3=) 14...Qd5–/+ 15.Nd2 Be6 16.Bf3 Qd7 17.Ne4 b6 18.Bc3 Bc7 19.a5 f5 20.ab6? (20.Ng5 b5–/+ (< 20...ba5 21.Qa4 Bd5 22.Bd5 Qd5 23.e4=)) 20...Bb6?? (better is 20...fe4 21.Be4 Bb6 (< 21...ab6 22.Ra8 Ra8 23.Qf3–+) 22.Bc6 Qc6 23.Be5 Qd5–+) 21.Ng5=+ Rad8 22.Bc6 Qc6 23.Be5 h6 24.Ne6 Qd6?? (better is 24...Qe6 25.Bg3 c4=) 25.Bd6+– 1–0. ZeitNot2002 (1690) – DogKnights, Dos Hermanas Internet Section, 2003.

4.Nf3 Nh6 5.Bc4 c6 6.Bb3 d5 7.0-0 0-0 8.d4 e4 9.Nfd2 f5 10.c4 Be6 11.cd5 cd5 12.Nc3 Kh8 13.Rc1 Nc6 14.Qe2 f4 15.ef4 Nd4–+ 16.Qe3 Nb3 17.Nb3 Nf5 18.Qd2? d4 0–1. amator111 (1640) – rinokeros (1645), internet, 2011.

4.f4 (---> 1.b4 e5 2.Bb2 Bb4 3.f4 f6 4.e3).

4.Qg4 Qe7 5.Bc4 Nh6 6.Qg3 (6.Qh5 Kd8=+) 6...Nc6 7.Nc3 d5 (7...Bc3 8.Bc3 Rb8-/+) 8.Bd3?? (8.Nd5 Qd7=) 8...a6 (better 8...Be6!?-/+) 9.Bh7 (better 9.Nd5 Qf7 10.Be4=) 9...Bg4 (better 9...Be6 10.Bg6 Kd8-/+) 10.Qh4?? (10.Bg6!? Kd8 11.Nd5+=) 10...Kd8 (better 10...Rh7 11.Nd5 Bd2 12.Kd2 0-0-0-+) 11.Qg4?? (better 11.Nd5 Qd6 12.Be4=) 11...Ng4-+ (11...Rh7?! 12.Qg6 Bc3 13.dc3=) 12.Ba3 (12.Bf5 Bc3 13.Bc3 Rh2 14.Rh2 Nh2-+) 12...Nd4 (better 12...Rh7 13.Nd5 Bd2 14.Kd2 Qa3 15.Nh3-+) 13.ed4 (13.Bb4 Qb4 14.Rb1 Qd6-+) 13…b5 (13...b5 14.Bf5 ed4 15.Nce2 Rh2 16.Rh2 Nh2-+) 0-1. opperwezen (2795) - mathace (2385), lichess.org, 2016.

5.Bc4 Nc6 (5...d5 6.Be2-/+) 6.Bg8 Rg8 (6...d5 7.f4-/+) 7.Qh5 Kf8 8.Qh7 d5 9.Nf3 Qd7 10.Nh4 Qg4 (10...Qf7=+) 11.Ng6 (better 11.f4!? Be6 12.0-0=) 11...Kf7-/+ 12.Ne5?? (better 12.Nh4-/+) 12...fe5 (12...Ne5 13.Qh3 Qh3 14.gh3 Bh3 15.Be5 fe5 16.c3-+) 13.0-0 Bf5 14.Qh3 (14.f3 Qg2! 15.Kg2 Bh7-+) 14...Qh3 15.gh3 Rh8 (15...Bc2 16.f4 e4 17.Nc3-+) 16.d3 (16.f4 Bc2 17.fe5 Ke6-+) 16...Rh3 (better 16...Bh3 17.Rc1 Rh5 18.Kh1-+) 17.Kg2 (17.Nc3 Bc3 18.Bc3 Rah8-+) 17...Rah8 18.Rh1 e4 19.d4 (19.Nc3 ed3 20.cd3 Bd3 21.f3-+) 19...Bg4 20.Bc3 Bc3 (20...Bf3!? 21.Kg1-+) 21.Nc3 Bf3 22.Kf1 Bh1 (22...Bh1 23.Rb1 Nd8 24.Nd5 Rh2-+) 0-1. aravind555 (1635) - Karpochin (1635), lichess.org, 2018.

5.Nf3 d6 6.Be2 Nc6 7.0-0=+ Bg4 8.d4 ed4 9.Nd4= Be2 (9...Be2 10.Qe2 Bb6=; 9...Bd7 10.Bd3 Nge7 11.Qh5 Kf8 12.Nc3= (12.Bh7? Nd4 13.Bd4 Bb6–+)) 0–1. makaveli1982 – weakplayer, internet, 2007.

5.f4 d6 6.Nf3 (6.Qh5 g6 7.Qf3 ef4 8.Qe4 Kd7 9.Qf4 Nc6+=) 6...Nc6 (6...Ne7 7.fe5 de5 8.Bc4–/+) 7.fe5 (7.Bc4 Bg4–/+) 7...de5 8.Bb5 (8.Bc4 Bg4–/+) 8...Nge7 (better is 8...Qd5 9.c4 Qd7+=) 9.Ne5? (better is 9.0-0–/+) 9...fe5–+ 10.Qh5 (10.0-0 Qd6–+) 10...Ng6 11.Bc6 (11.0-0 Qd6–+) 11...bc6 12.Be5 (12.Bc3 Qd5 13.Qg5–+) 12...Qd5 13.0-0 Qe5 14.Qf3 (14.Qe5 Ne5 15.Rf4 Ng6–+) 14...Qe6 15.Nc3 Bb7 (15...Bc3 16.dc3 Ba6 17.Rfe1–+) 16.Rab1 (16.Ne4 Qe7–+) 16...0-0-0 (16...Bc3 17.dc3 Rf8 18.Qe2 Rf1 19.Rf1–+) 17.Na4 (17.Qe2 Bc3 18.dc3 c5–+) 17...Bd2 18.e4 Qc4 (18...Qc4 19.Qh3 Rd7–+; 18...Rhf8 19.Qe2 Rf1 20.Rf1–+) 0–1. Adamowski,Andrzej – Kusmierek,Jozef, corr 2AMM Poland, 1993.

5.Qh5 g6 6.Qf3 d5 7.g4 (7.Nc3 Be6–/+) 7...h5 8.gh5 Rh5 9.Be2 (9.Nc3 Be6–/+) 9...Bf5–+ 10.Qg3 Rg5 11.Qh4 Bc2 12.Qh8 (12.Qh7 Kf8 13.f4 ef4 14.Nh3 fe3 15.Ng5+=) 12...Kd7 13.h4 Rf5 14.h5 (14.Bg4 Kc8–+) 14...Ne7 (14...gh5 15.Bh5 Rg5 16.Nf3 Rh5 17.Qh5=+) 15.Qd8 Kd8 16.h6 g5 (16...Bb1 17.Rb1 Bd2 18.Kd2 Nbc6+–) 17.Bg4 (17.h7 Ng6 18.h8Q Nh8 19.Rh8 Kd7+/–) 17...Bb1 18.Bf5 (better is 18.Rb1 Bd2 19.Kd2 Rf2 20.Ne2+=) 18...Bf5–/+ 19.h7 Bh7 (19...Ng6 20.f4 Ke7 21.fe5–+) 20.Rh7–/+ Nec6 21.Rc1 d4 22.ed4= Nd4 23.Bd4 ed4 24.Ke2 g4 25.Kd3 Kc8 26.Ne2+= Nc6 27.Nd4 Ne5 28.Ke4 c6 29.Rh8 Bd8+= 30.Ne6 Kd7 31.Rd8?? Rd8= 32.Nd8 Kd8 33.Kf5 Nd3 34.Rg1 Nf2 35.Kf6 Kd7 36.Kf5 Kd6 37.Rg2 Nd3 38.Rg4 Kd5 39.Rg7 Nc5 40.Kf4?? Ne6–+ (41.Kf5 Ng7 42.Kg4 Ne6–+) 0–1. Mayor – Zippy, ICS, 1994.

5.d4 Nc6–/+ 6.d5 Nce7 7.Bc4 (7.Nf3 e4 8.Qa4 Bc3 9.Nc3 ef3 10.gf3 Nh6=) 7...d6 8.e4 (8.Nf3 c6+=) 8...f5–/+ 9.Nd2 (9.Qh5 g6 10.Qh4 fe4–/+) 9...Nf6 10.Qa4 (10.Bb5 c6 11.dc6 bc6–+) 10...c6 11.Qc2 (11.dc6 bc6 12.f3 fe4 13.fe4 Qb6–+) 11...fe4 (11...cd5 12.ed5 Ned5 13.Qb3–+) 12.dc6 bc6 13.Ne4 (13.Nb3 Bb6–+) 13...Ne4–/+ 14.Qe4 d5 15.Bd5 (15.Qe5 dc4 16.Rd1–+) 15...Qd5 (15...Nd5?! 16.Qe5 Qe7 17.Qe7 Ke7 18.Ne2–+) 16.Qd5 (16.Qf3 Rb8 17.Rb1 Qf3 18.gf3 Bf5–+) 16...Nd5 (16...cd5 17.Nf3 Rb8 18.0-0-0–+) 17.Ne2 Ba6 18.f3 (18.Rc1 Rb8 19.Rc2 Bc4–+) 18...Rb8 19.Ba3 (19.Rb1 Nc3! 20.Nc3 Bc3 21.Kd1 Rb2 22.Rb2 Bb2–+) 19...Nc3 20.Kf2 (20.Nc3 Bc3 21.Kf2 Ba1 22.Ra1 Kf7–+) 20...Bb6 21.Ke1 Ne2 (21...Be2 22.Bd6 Rd8 23.Be5–+) 22.Bd6 Rd8 (better is 22...Ba5!? 23.Kd1 Rd8 24.a3–+) 23.Be5 0-0 (23...Bd4 24.Bd4 Nd4 25.Rd1–+) 24.Rd1 Rde8 (24...Rde8 25.Bg7 Nf4 26.Kd2 Re2 27.Kc1 Be3 28.Kb1 Rb8 29.Ka1 Bc4–+) 0–1. super knight – pierre, chessHere.com, 2005.

5.d4 Ne7 6.de5 fe5 7.Qh5 Ng6 8.Bd3 0-0 9.Bg6 hg6 10.Qe5 d5 11.Nf3 c5 12.Qg5 Qg5 13.Ng5 Nc6 14.0-0 Bf5 15.Rd1 Ne5 16.Nd2 Nd3 17.Nb3 Bd8 18.Rd3 Bd3 19.Nc5 Bc4 20.Nge6 Rf7 21.Nd8 Rd8 22.Ne6 Rd6 23.Nd4 Rb6 24.Bc1 Bd3 25.h3 Rc7 26.a3 Rc3 27.Bd2 Rc8 28.Bb4 Kf7 29.Nf3 Be4 30.Nd4 Bd3 31.Rd1 (31.Nf3 Kf6 32.Rd1–/+) 31...Bc4–/+ 32.Rd2 Rf6 33.Kh2 ½–½. Sala,Stefano – Naasen,Nils (1915), IECG, 2004.

5.Qh5 g6 6.Qf3 d5–/+.

5.Bc4 d5–/+ 6.Be2 Be6 7.Nf3 c5 8.0-0 0-0 9.d4 cd4 10.ed4 e4 11.Nd2 Nbc6 12.Na4 f5 13.Nc5 Bc5 14.dc5 f4 15.Nb3 f3! 16.gf3 Bh3 17.fe4 de4 18.Qd8 Rad8 19.Rfd1 Rde8 20.Kh1? Rf2–+ 21.Bb5 e3 22.Rg1 Ng6 23.Rae1 Nh4?? 24.Bc4+– Kf8?? 25.Bg7 Ke7 26.Re3 Kd7 27.Rd1 (27.Rd1 Kc7 28.Rh3+– (28.Re8?! Nf3 29.Be5 Nce5 30.Re7 Kc8 31.Re8 Kc7 32.Re7 Kc8 33.Re8 Kc7=)) 1–0. kehrsam – dixi82, ChessWorld.net, 2006.

5.Nf3 Nbc6 6.Bc4 d5 7.Bb3 Bg4 8.e4? Bc3–+ 9.Bc3 de4 10.h3 Bh5 11.g4 Bg6 12.Nh4 Qd7 13.Qe2 Nd4 14.Qe3 Nd5 15.Bd5 Nc2 16.Ke2 Ne3 (16...Ne3 17.de3 Qd5–+) 0–1. kehrsam – jammboy, ChessWorld.net, 2006.

5.a3 Ba5 –/+.

5.Bd3 Na6 6.Nf3 d5 7.cd5 Qd5 8.Be2 –/+.

5.Bd3 d6 6.Qh5 g6 7.Qe2 Nbc6 8.h4 (8.Nf3 0-0–/+) 8...Be6 9.Nc3 Kf7 10.Nh3 (10.Nf3 Bc3 11.dc3 Qg8+=) 10...d5 11.cd5 Nd5 12.Ne4 Qd7 13.Rc1 (13.h5 Rad8–/+) 13...Rad8 14.Bb5 (14.a3 Be7 15.Bc4 Kg7–/+) 14...Rhe8 (14...Bf5!? 15.Rc4–+) 15.h5–/+ Bf5 16.Nc3 (16.hg6 Bg6 17.f3+=) 16...Nc3 17.dc3 (17.Bc3 Ba3 18.Rd1 a6 19.hg6 Bg6 20.Bc6 Qc6–/+) 17...Bf8 (17...Bc5 18.0-0 Bd6 19.Rfd1–+) 18.hg6 (18.f3!?–/+) 18...hg6–+ 19.Bc4 (19.f3 a6 20.Ba4 Bd3–+) 19...Kg7 20.e4 Be4! 21.Qe3?? (21.Qe4 Qd2 Double attack) 21...Bg2 22.Ke2 (22.Rh2 Nd4! 23.Be2 (23.Rg2?? Nc2 24.Ke2 Ne3 25.fe3 Qh3–+) 23...Ne2 24.Qe2 Bh3 25.Rd1–+) 22...Qg4 23.f3 Qc4 24.Kf2 Bc5 0–1. Hepting,Heinrich (2185) – Beyerlein,Andreas (1980), Regionalliga NO, 2009.

5.Nf3 Nbc6 6.Nc3 d5 7.Qb3 Be6 8.cd5 Nd5 9.Nd5 (9.a3!? Bc3 10.dc3–/+) 9...Qd5 10.Qd5 Bd5 11.Bb5 0-0-0 12.Bc6 (12.a3 Bd6–+) 12...Bc6 13.0-0? (better is 13.a3 Ba5 14.Bc3 Bc3 15.dc3–+) 13...Bf3 14.gf3 Rd2 15.Rab1 Ba5 16.Rfc1 Rhd8 17.Kg2 (17.Kf1 R8d3–+) 17...Re2 18.Bc3 (18.Rf1 Rdd2 19.Ba3 Ra2–+) 18...Bc3 19.Rc3 Rdd2 20.Kg3 (20.Rf1 Ra2 21.f4 ef4 22.ef4 a5–+) 20...Rf2 21.h3 (21.h4 Rg2 22.Kh3 f5–+) 21...g5 (better is 21...Rg2 22.Kh4 f5–+) 22.Kg4 Ra2 (22...Ra2 23.e4 Rh2–+) 0–1. Quist,S – Santana,Manuel, corr ICCF M, 1988. (same as the following game; which is fake?)

5.Nf3 Nbc6 6.Nc3 d5 7.Qb3 Be6 8.cd5 Nd5 9.Nd5 Qd5 10.Qd5 Bd5 11.Bb5 0-0-0 12.Bc6 Bc6 13.0-0? Bf3 14.gf3 Rd2 15.Rab1 Ba5 16.Rfc1 Rhd8 17.Kg2 Re2 18.Bc3 Bc3 19.Rc3 Rdd2 20.Kg3 Rf2 21.h3 g5 22.Kg4 Ra2 23.Rd1 Rad2 24.Rd3 Rd1 25.Rd1 b5 26.Kf5 Rf3 27.Ke6 Re3 28.Kf6 b4 29.Kg5 b3 30.Kf6 b2 31.Ke7 Rb3 (31...Rb3 32.Ke6 b1Q 33.Rb1 Rb1 34.Ke5 a5–+) 0–1. Wich,Manfred – Schuler,Martin (1640), St Ingbert open, 1988. (same as the previous game; which is fake?)

5.Bb3 a5 6.Qh5 g6 7.Qh4 Nc6 8.a3 Be7 9.Qg3 Nh6 10.f4 Nf5 11.Qf2 Be6 12.Nf3 Qd6 13.0-0 ef4 14.ef4 Qf4 15.Nc3 b6 16.Nb5 Bc5 17.d4 Ncd4 18.Nfd4+/– Qf2 19.Rf2 Nd4 20.Bd4 Bd4 21.Nd4 (21.Nd4 Bf7 22.Re1 Kf8 23.Rf6+–) 1–0. bratek55 (1755) – hugr (1615), internet, 2011.

5.Bb3 Nc6 6.a3 Ba5 7.Ne2 Nge7 8.Ng3 Be6 9.0-0 Qd7 10.c3 h5 11.h4? (11.Nh5 Nf5 12.Qe2 0-0-0-/+) 11...g5 (better 11...Ng6!?-+) 12.hg5 fg5 13.Nh5 0-0-0 14.Ng3 (14.Nf6 Qd6 15.c4 dc4-+) 14...Rdg8 (14...Nf5 15.Nf5 Qh7 16.Nd6 cd6 17.f3-+) 15.d3 (15.e4 Rh4-/+) 15...Nf5-+ 16.Qf3?? (better 16.Nf5 Bf5 17.f3-+) 16...e4! 17.de4 (17.Qe4 A deflection 17...Ng3 Theme: Double Attack) 17...Ng3 (17...Qh7 18.Nh5 g4 19.Qf5 Bf5-+) 18.Qg3-/+ de4 19.Be6 (19.Rd1!? Qf7 20.Be6 Qe6 21.Nd2-/+) 19...Qe6-+ 20.c4 g4?? (better 20...Rh4 21.f3 Bb6-+) 21.Bh8= Rh8 22.a4 (22.Ra2 Ne5 (22...Qc4?! 23.Qg4 Kb8 24.Rd2=) 23.Rd1 Qh6-+ (23...Nc4?! 24.Rc2 c6 25.Qf4=+)) 22...Ne7 (22...Ne5 23.Rd1 Qh6-+ (23...Nc4?! 24.Qf4-/+)) 23.Na3?? (23.Rd1 Qf5 24.Qf4=) 23...Nf5?? (better 23...Bc3 24.Nb5 Be5-+) 24.Qg4+= Qf6? (24...Rh4 25.Qg5 Bb4=+) 25.g3?? (25.Qe4 c6+-) 25...Bb6 (25...Qh6 26.Qf5 Kb8 27.Qc8 Kc8 28.f3 Qh2) 26.Kg2?? (better 26.Qe4 Kb8 27.Kg2+-) 26...Be3?? (better 26...Qe6 27.Qg5 Rg8=) 27.fe3+- Rf8 (27...Qb2 28.Rf2 Rh2 29.Kh2 Qf2 30.Kh3+-) 28.Rf4 (better 28.Nc2 Qe6+-) 28...Kb8 29.Raf1 (better 29.Re1 Qb2 30.Kg1+-) 29...Ne3-/+ 30.Kh2?? (better 30.Kg1 Ng4 31.Rf6 Rf6 32.Rf6 Nf6 33.Kf2-/+) 30...Ng4 (30...Nf1?! 31.Kg1 Qd4 32.Kf1-/+) 31.Kh1 (31.Kg2 Qb2 32.R1f2 Ne3 33.Kg1 Qc1 34.Rf1 Qf1 35.Rf1 Rf1 36.Kh2-+) 31...Qh6 32.Kg2 Qh2 0-1. aravind555 (1755) - mickeymickeyyeah (1760), lichess.org, 2020.

5.Bb3 Nc6 6.Ne2 Nge7 7.0-0 0-0 8.c4 Be6 9.cd5 Bd5 (9...Nd5?! 10.e4=) 10.e4 Bb3 11.Qb3 Rf7 12.a3 Bd2 13.Rd1 Qc8 14.Rd2 f5 15.ef5 Qf5 16.Ng3 (16.Qb7?! Qf2 17.Kh1 Qf1 18.Ng1 Rc8+=) 16...Qc8 17.Nc3 Nd4 18.Qc4 c5 19.Nce4 b6 20.Ng5 (20.Bd4?! cd4 21.Qf7 Kf7 22.Nd6 Ke6 23.Nc8 Rc8+–) 20...Qf8 21.N3e4 b5 22.Qf7 Qf7 23.Nf7 Kf7 24.Bd4 ed4 25.Nd6 Kg8 26.Nb5 a5 27.Re1 Nc6 28.Nd6 h6 29.Rc2 Rd8 30.Re8 Re8 31.Ne8 d3 32.Rc5 Nd4 33.Rd5 Ne2 34.Kf1 Nc1 35.Ra5 Nb3 36.Rd5 d2 37.Ke2 Kf8 38.Rd2 Nd2 39.Kd2 Ke8 40.h4 1–0. justpawn – peakbagger, playchess.de, 2003.

5.Bb3 Be6 6.e4 c6 7.Nf3 de4 8.Be6=+ ef3 9.Qf3 Qd2?? 10.Nd2+– Ne7 11.c3 Bd6 12.Ne4 Bc7 13.Ba3 Na6 14.Nf6! gf6 15.Qf6 Rf8 16.Qe7# 1–0. golly1 – Bull_Dog_Baz, ChessWorld.net, 2007.

5.Bb3 Be6 6.Ne2 Ne7 7.0-0 0-0 8.d3 Qd7 9.Nd2 c5 10.c4 d4 11.ed4 cd4 12.Ne4 Rc8 13.f4 b5 14.fe5= fe5 15.cb5 Nd5 16.Bd5 Qd5 17.Qa4 Be7 18.Rfc1 Rf8 19.N2g3 Nd7 20.Rf1 Nb6 21.Qa5 Rf1 22.Nf1 Bf5 23.Nfg3 Bg6 24.Ba3 Bh4 25.Bc5? Bg3–+ 26.Bb6 Be4?? 27.de4–/+ ab6 28.Qb6 Bh2! 29.Kh2 Qe4 30.Qc6 Qf4 31.Kg1 Rf8 32.Qd5 Kh8 33.Qf3 Qf3 34.gf3 Rf3?? 35.b6 Rf7?? 36.Rb1 Rb7= 37.Kf2 e4 38.a4 Kg8 39.a5 Kf8?? 40.a6+– Rf7 41.Ke2 1–0. bratek55 (1650) – lakyluciano, internet, 2011.

5.Bb3 Ne7 6.c3 Bd6 7.Ne2 Be6–+ 8.d3 c6 9.0-0 Nd7 10.Nd2 Qc7 11.Ng3 0-0-0 12.a4 g5 13.c4 Ng6?? 14.cd5+– cd5 15.Rc1 Nc5 16.d4 ed4 17.ed4 Bg3? 18.Rc5 Bh2 19.Kh1 Bd6 20.Rc7 Kc7 21.Qc2 Kb8 22.Re1 Bf7 23.Qf5 Be7 24.Re7! Ne7 25.Qf6 Bg6 26.Qe7 g4 27.Qg5 Rhg8 28.Qe5 Ka8 29.Bd5 Rge8 30.Qg5 Re1 31.Kh2 Rd1 32.Bb7! Kb7 33.Qd8 Rd2 34.Qd5 Kc8 35.Qa8 Kd7 36.Qa7 Kc6 37.Qc5 Kd7 38.Qb5 Kc8 39.Qc4 Kd7 40.d5 Rb2 41.Qc6 Ke7 42.Qe6 Kf8 43.Qf6 Bf7 44.Qb2 Bd5 45.a5 Kf7 46.a6 h5 47.Qb7! Bb7 1–0. epasacrifice – jammboy, ChessWorld.net, 2011.

5.Bb3 g6 6.c3 Be7 7.a4 a5 8.Na3 h5 9.Qc2 Bf5–/+ 10.d3 e4 11.f3? ed3–+ 12.Qd2 Nc6 13.Nh3 Bh3 14.gh3 Ne5 15.Kf2 f5 16.f4 Nf6 17.Kg2 Ne4 18.Qd1 Nd7 19.Qd3 Nec5 20.Qd5 c6?? 21.Qf7 1–0. ifairclough – quikeagle, net–chess.com, 2001.

5.Bb5 c6 6.Be2 Ne7 7.c3 Bd6 8.d3 0-0 9.Nf3 Be6 10.e4 Nd7–+ 11.Nbd2 Ng6 12.0-0 Nf4 13.ed5 cd5 14.c4 Rc8 15.cd5 Bd5 16.Ne4 Be7 17.a4 Qb6 18.Rb1? Ba2 19.Bd4 Qb1 20.Qb1 Ne2 21.Kh1 Bb1 22.Ba7 Bd3 23.Rd1 Be4 24.h3 Rc1 25.Rc1 Nc1 0–1. mic (2160) – newconquistador (2470), net–chess.com, 2009.

5.Qh5 Kf8 6.a4 Ne7 7.Ba3 Ba3 8.Na3 d6 9.Nb5 Be6 10.Nh3 Nbc6 11.0-0 Qd7 12.Nc3 Bh3 13.Qh3 Qh3 14.gh3 g6 15.Bc4 f5 16.Ne2 d5 17.Bb5 a6 18.Bc6 Nc6 19.Rab1 b6 20.Nc3 Rd8 21.d3 d4 22.ed4 Nd4 23.Kg2 Nc2 24.Rfd1 Nd4 25.h4 Kg7 26.Re1 Kf6 27.Kg3 Nc6 28.f4 Rd3 29.Kf2 Rc3 30.fe5 Ne5 31.Red1 Rd3 32.Rdc1 Rc8 33.Ke2 Rh3 34.Rh1 Rh4 35.Ke3 Ra4 36.h4 b5 37.h5 c5 38.hg6 hg6 39.Rhd1 Rd4! 40.Rf1 Rd3 41.Ke2 c4 42.Ra1 c3 43.Ra6 Kg7 44.Ra7 Nf7 45.Kd3 c2 46.Rc1 Kf6 47.Ra6 Kg5 48.Rc2 (48.Rc2 Ne5 49.Kd2 Rc2 50.Kc2–+). wojtekkk (1635) – dziobic, internet, 2011.

5.Qh5 Kf8 6.Bc4 d5 7.Bb3 Be6 8.Ba3 Ba3 9.Na3 Qe7 10.Nb1 Nc6 11.Qd1 Nh6 12.Ne2 g6 13.Ng3 Kg7 14.a4 a5 15.Nc3 Na7 16.Bd5= Rad8 17.Be6 Qe6 18.0-0 b6 19.Nge4 Rd7 20.Qe2 Nf7 21.Nb5 Nb5 22.Qb5? Rhd8 23.c3? f5–+ 24.Ng3 Rd2 25.h3 Nd6 26.Qc6 Qd5?? 27.Qc7= Nf7 28.Qb6 Rc8 29.Rac1 Rc6 30.Qb7 f4 31.ef4 ef4 32.Nh1 Kh6 33.Qe7 Kg7= 34.Qh4 Rc4 35.Qg4 Ra4 36.h4 Ne5 37.Qg5 Qd6 38.Rfe1? Nf7?? 39.Qg4–/+ Qc5 40.Rf1 Qd5 41.h5 Re4 42.c4 Rc4 43.Rc4 Qc4 44.h6? Nh6–+ 45.Qf3 Qf7?? 46.Qc3+– Qf6 47.Qd2 Ng4 48.f3 Ne3 49.Rc1 a4 50.Rc7 Kh6 51.Qf2 a3 52.Ra7 Qd6 53.Qh4 1–0. wojtekkk – candys84 (1615), internet, 2011.

5.Nc3 Bc3 6.Bc3 d5 7.Qh5 Qf7 8.Qf7 Kf7 9.Rb1 Ne7 10.e4 Nd7 11.ed5 Nd5 12.Bc4 c6 13.Ne2 N7b6 14.Bb3 Be6 15.0-0 Nc3 16.Nc3 Rhd8 17.d3 Rd7 18.Ne4 Bb3 19.ab3 (19.Rb3 Re7-/+) 19...Nd5 20.Ra1 ½-½. kaalmakreel (2110) - mashley (2125), ChessWorld.net, 2005.

5.c4 Nh6 6.a3 Ba5 7.Nc3 c6 8.Qc2 g6 9.f4 (9.Nf3 d6+=) 9...d6 (9...ef4 10.e4–/+) 10.Nf3 (10.Nge2 Be6+=) 10...Na6 (10...ef4 11.e4–/+) 11.Ne4 0-0 12.c5 (12.fe5!? fe5 13.c5+=) 12...d5–/+ (worse is 12...Nc5 13.Nc5 dc5 14.fe5+=) 13.fe5 (13.Ba6 de4 14.Bc4 Kg7 15.fe5 ef3 16.ef6 Rf6–+) 13...de4–+ 14.Bc4 Be6 15.ef6 Qd7 (15...Rf6 16.Bf6 Qf6 17.Be6 Qe6 18.Nd4–+) 16.Ne5–/+ Qd2 17.Qd2 Bd2 18.Kd2 Bc4 19.Nc4 Nc5 20.Ke2 Rad8 (20...b5 21.Nd2 Na4 22.Rab1–/+) 21.Rad1 Nd3 22.Bc3 Ng4 23.Rhf1 (23.Rdf1 Kf7–/+) 23...Nh2 24.f7 Rf7 25.Rf7 Kf7 26.Rh1? (better is 26.Nd2!? Nc5 27.Rh1–/+) 26...Ng4–+ 27.Rh7 Ke6 28.Rb7 Rf8 29.Be1 Rh8 (29...Kd5!? 30.Re7–+) 30.Bg3–/+ Rh1 31.Nd6 Nf6 32.Rg7 Rg1 33.Ne4 Ne4 (33...Rg2?! 34.Kf3 Rg1 35.Rg6 Ne5 36.Be5 Rg6 37.Bf6 Rf6 38.Nf6 Kf6 39.Kf4=) 34.Rg6?? (better is 34.Kd3 Kf6 35.Rg6 Kg6 36.Ke4 Rg2 37.Bb8–+) 34...Kf5 35.Rc6 Nc1 (35...Ng3?! 36.Kd3 Rd1 37.Kc2–+) 36.Kf3 Rf1 0–1. Skliarov,Dimitrij – Lehtinen,Heikki (2245), Tampere op2, 2000.

5.Qh5 Qf7 6.Qh4 (6.Qf7 Kf7 7.Bc4 Ke8+=) 6...Nc6–/+ 7.Nf3 Nge7 8.g4 (8.c3!? Bc5 9.Ba3 Ba3 10.Na3–/+) 8...d5–+ 9.Rg1? (better is 9.Bb5–+) 9...e4 10.g5 (10.Bb5 Ng6 11.Qh3 ef3 12.Qf3 Bd7–+) 10...Nf5 (better is 10...Ng6 11.Qh5 ed3 (11...ef3?! 12.gf6 Nge5 13.fg7 Nd3 14.cd3–+) 12.cd3 Nce5 13.Ne5 fe5–+) 11.Qh3 (11.g6 Qg6 12.Qf4–+) 11...Nfd4 12.g6 (12.Qc8 Rc8 13.Nd4 Nd4 14.Bd4 ed3 15.cd3 c5–+) 12...Qg8 (12...Bh3?! 13.gf7 Kf7 14.Nd4 Nd4 15.Bd4 ed3 16.cd3–+; worse is 12...Nf3 13.Qf3 Qe6 14.Qe2 ed3 15.Qd3–+) 13.Nd4 (13.Qc8 Rc8 14.Be4 de4 15.Nd4 Ne5–+) 13...Bh3 (13...ed3 14.Qh5 Nd4 15.Bd4 dc2 16.Nc3 Bc3 17.Bc3 hg6 18.Qg6 Qf7 19.Qg7 Rh2 20.Qf6 Qf6 21.Bf6–/+) 14.Bb5 Bd7 15.Ne2 (15.Bc6 bc6 16.f3 ef3 17.Nf3 Qe6–+) 15...hg6 16.Rg6 Qf7 (16...Rh2 17.Bc6 Bc6 18.Rg1–+) 17.Rg2 0-0-0 18.Nbc3 Ne5 19.0-0-0 c6 20.Ba4 Bg4 21.Rdg1 g5 (21...f5!? 22.Bb3–+) 22.Rg4 Rh2 (better is 22...Ng4 23.Rg4 Rh2 24.Rg1–+) 23.Nd1 (23.R4g2 Rg2 24.Rg2–+) 23...Qh5 (23...Qh5 24.Be5 fe5–+) 0–1. Menzel,Karsten – Dischinger,Frank (2280), Mainz–ch, 1995.

5.f4 ef4=+ 6.a3 Bd6 7.ef4 0-0 8.g3 (8.Qh5 g6 9.Qh4 Kg7=+) 8...b6 (8...Qe8 9.Bc4 Kh8 10.Nf3-/+) 9.Qf3 Nbc6 10.Ne2 (10.Qh5 g6 11.Qh4 Bb7-/+) 10...Bb7 11.0-0 (11.Be4 f5 12.Qc3 Rf6-/+) 11...Rb8 (11...Bc5 12.Kg2 f5 13.Bc4 Kh8-+) 12.Qh5? (12.Be4 Qe8-/+) 12...g6 (12...Bc5 13.Rf2 f5 14.Nbc3-+) 13.Qh4 (better 13.Bc4!? Kg7 14.Qh3-/+) 13...Bc5-+ 14.Rf2 Kg7 15.Bb5 (15.Nbc3 Bf2 16.Kf2 a6-+) 15...Bf2 16.Kf2 Nf5 17.Qh3 Qe7 18.Nbc3 Qc5 19.Kf1 Ncd4 20.Bd3 (20.Bd7 Ne2 (20...Nc2?! 21.Rc1-/+) 21.Ne2 Qc2-+) 20...Rbe8 (better 20...Nf3 21.Rd1 Rbe8 22.Bf5 Qf5 23.Qf5 Nh2 24.Kg1 Nf3 (24...gf5?! 25.Kh2 Bf3 26.Re1=+) 25.Kf2 gf5-+) 21.Re1 (21.g4 Nd6 22.Na4 Qc6 23.Bd4 Qa4-+) 21...Re6 (21...Nf3 22.Rd1 Nh6 23.Nb5-+) 22.Nd4 Nd4 23.Re6 de6 24.Ne2 (24.Na4 Qd6 25.Bd4 Qd4-+) 24…Ne2 (24...Ne2 25.Ke2 Qg1-+) 0-1. zembelek (2065) - chert843 (2155), Rated Blitz game, lichess.org, 2013.

5.Qh5 Kf8 6.a3 Bc5 7.Qd1 Nbc6 8.Nc3 d5 9.Bb5 Bf5 10.Bc6 Nc6 11.Nge2 Kf7 12.Ng3 Bg6 13.h4 h5 14.Nce2 Qd6 15.a4 Rad8 16.d3 a5 17.Ng1 Nb4 18.Nf3 c6 19.0-0 b5 20.ab5= cb5 21.Ra5 Ra8 22.Ra8 Ra8 23.Bc3 Ra2 24.Bb4 Bb4 25.c3 Bc3 26.Qb3 Qa3 27.Qd5+= Kf8 28.e4 b4 29.Qd6 Kg8 30.Qe6 Kh7 31.Nf5 Qa7?? 32.Ne7+– Qa8? 33.Ng6 Kg6+= 34.Qf5 Kf7 35.Qh5 Ke7 36.Qg6 Qg8 37.h5 b3 38.Nh4 b2 39.Nf5 Kd7 40.Qg4?? Ke8 41.Nd6 Ke7+= 42.Nf5?? Kd8 43.Ng7 (43.Ng7 Ra1 44.Ne6 Qe6 45.Qe6 Rf1 46.Kf1 b1Q 47.Ke2 Qc2 48.Kf3 Qd3 49.Kg4 Qe4 50.Kh3 Qd3 51.f3–/+). wojtekkk – gogosc, internet, 2011.

6.Qh6 d5 7.a3 Bd6 8.Qg7 Rf8 9.Bb5 c6 10.Be2 Bf5 11.Bd3 e4 12.Be2–/+ Qb6 13.Bf6 Nd7 14.Be7 Be7 15.Nc3 Bf6 16.Qh6 0-0-0 17.Rb1 Qa5 18.Nd1 d4 19.ed4 Bd4 20.Qh4 Ne5 21.c3 Nd3 22.Bd3= ed3?? 23.cd4+– Rde8 24.Ne3 Re4 25.Qh6 Rfe8 26.Nf3 Bg4 27.Ne5 Rd4 28.N5g4 Rg4 29.0-0 Ra4 30.Qg7 Qa6 31.Rb4 Ra3 32.Rfb1 b6 33.h3 Ra2 34.R4b2 Ra5 35.Qf7 Rae5 36.Ng4 R5e7 37.Qf3 Qc4 38.Rb4 Qe6 39.Ne3 Rf7 40.Qg3 1–0. wojtekkk – organmaskin (1615), internet, 2011.

6.Qh6 d5 7.Be2?? Bf5 8.Bd3 e4 9.Be2 Nd7 10.c3 Bd6 11.f3 ef3 12.Bf3 Be5 13.d4 Bd6 14.Nd2 c6 15.Ne2 Qb6 16.Rb1?? Bb1–+ 17.Nb1 Qb2 18.0-0 0-0-0 19.a4 Nf5 20.Qh3 Ne3 21.Re1 f5 22.Bd5 Nd5 23.a5 N7f6 24.a6 Ng4 25.ab7 Kb7 26.Qd3 Bh2 27.Kh1 Bc7 28.Qc4 Rde8 29.Na3 Qd2 30.Qb3 Bb6 31.Nc4 Qe1 32.Ng1 Qh4 33.Nh3 Re1 0–1. wojtekkk (1630) – organmaskin, internet, 2011.

6.Qh6 d5 7.Qg7 Kd7 (better is 7...Rf8=+) 8.Qf6+/– Nbc6 9.Bb5 a6 10.Be5 ab5? (better is 10...Rf8 11.Bc6 Nc6 12.Qd8 Kd8=) 11.Qh8+– Qh8 12.Bh8 Kd6 13.Nc3 Bf5 14.Nb5 (14.Bf6 Bc3 15.dc3+/–) 14...Kd7? (better is 14...Kc5!? 15.a3 Ba5+=) 15.c3 Ba5? (better is 15...Rh8 16.cb4 Nb4+/–) 16.Bd4 Bd3 17.Na3 Nd4 18.ed4 b5 19.Nf3 b4? (19...Nc6+–) 20.Ne5 1–0. cagey – FXRHD, Live Game Caissa's Web, 2004.

6.Qh6 Nf5 7.Bf5 gf5 8.a3 Bd6 9.Qh5 Ke7 10.Qf5 Qg8 11.g3 Qg6 12.Qg6 hg6 13.Nf3 b6 14.d3 Bb7 15.e4 Bc5 16.Nbd2 Nc6 17.Nb3 Bd6 18.Nh4 Rag8 19.Nd2 b5 20.Ndf3 Bc5 21.Bc1 Nd4 22.Be3? Nc2–+ 23.Kd2 Be3 24.fe3 Na1 25.Ra1 c6 26.Rb1 a6 27.a4 Ke6 28.ab5 cb5 29.d4 Be4 30.Ne1 Bb1 0–1. wojtekkk – vicek, internet, 2011.

6.Qh6 Kf7 7.a3 Ba5 8.Bc3 Bb6 9.Ne2 Qf8 10.Qh4 d5 11.Ng3 Be6 12.Bb4 c5–/+ 13.Bc3 Nbc6 14.Qa4 Qe8 15.0-0 Bd7 16.Qh4 Qc8 17.Bb5 a6 18.Bc6 bc6?? 19.d3 Nf5=+ 20.Nf5 Bf5 21.Nd2 d4 22.ed4 cd4 23.Bb2 g5 24.Qh5 Bg6 25.Qf3 Qe6 26.Ne4 Be4 27.Qe4 Qd5 28.Qd5? cd5–+ 29.h3 Rac8 30.Rac1 Rc6 31.Rfe1? Rhc8 32.Re2 a5 33.g3 a4 34.Kg2 h5 35.Kf3 Kg6 36.g4 h4 37.Kg2 Ba5 38.f3 Bc3 39.Bc3 Rc3 40.f4 gf4 41.g5 Kg5 42.Kf3 Ra3 43.Rg1 Kf5 44.Rg5 (44.Rg5 fg5 45.Kg2–+). wojtekkk (1690) – maznik61, internet, 2011.

6.Qh6 Kf7 7.Bc4 d5–+ 8.Bb3 Bd6 9.e4 c6 10.ed5 cd5 11.Nf3 Be6 12.0-0 Nbc6 13.d3 Nf5 14.Qd2 a6 15.Nc3 Qd7 16.Nd5 Bd5 17.Bd5 Kg7 18.Bc6 Qc6 19.h3 Rhe8 20.a4 e4 21.de4 Re4 22.Bc1? Rae8 23.Rd1 Re2 24.Qd3 Bc5 25.Rf1 Ng3 26.Be3?? Nf1 27.Bc5? Qc5 28.Rf1 Qc2 29.Qd7 R8e7 30.Qd5 Qe4 31.Qd1 h5 32.Nd4 Rd7 33.Ne6?? Qe6–+ 34.Qb1 Qc6 35.a5 Rdd2 36.Qb4 Rb2 37.Qf4 Qc5 38.Qf3 Qg5 39.Qd3 Qa5 40.Qd7 Kh6 41.Qd3 Qf5 42.Qf5 gf5 43.g3 Kg5 44.h4 (44.h4 Kg4 45.Rc1–+). wojtekkk (1625) – fatmirmiraka, internet, 2011.

5.a3 Ba5 6.f4 Nc6 (6...ef4 7.ef4 Nh6 8.f5 Nf5 9.Bf5 Qe7 10.Ne2 gf5 11.0-0+=) 7.Nf3 ef4 8.ef4 Qe7 9.Qe2 d5 10.Kd1 Qe2 11.Be2 Kf7 (11...Bf5 12.Re1 0-0-0 13.Ng5+=) 12.Rf1 Nge7 13.Nc3 (13.f5 gf5 (worse is 13...Bf5 14.g4=) 14.Re1 Rg8–/+) 13...Re8–/+ 14.Rb1 Nd8 15.f5 (15.h3 Kg8+=) 15...Bf5–/+ 16.g4 Bc8 17.Ng5 Kg7 (17...Kg8!? 18.Rf6 h6 19.Nd5 hg5 20.Ne7 Re7 21.Rg6 Kf8 22.Rg5 Nc6+=) 18.Nce4= Ng8 (18...de4 19.Bf6) 19.Nf6+= Nf6 20.Bf6 (worse is 20.Rf6 Kg8+=) 20...Kg8 21.Rb5 Re2 (21...Bb6 22.Rd5 Nf7 23.Nf7 Kf7 24.Re5 Re5 25.Be5 Ke7 26.Bf6 Ke8 27.d4+=) 22.Ke2 Bg4 23.Kd3 Nc6 24.Rd5 (worse is 24.Rb7 Re8 25.Rf2 h6–/+) 24...h6 (24...Re8 25.Ne4+=) 25.Ne4 Bf5 26.Rff5 (26.Be5 Bb6 27.Bc3 a6+=) 26...gf5 27.Rf5 Kh7 28.h4 Rf8 29.h5 Bb6 30.c3 a6 31.Ke2 Rf7 (31...Ne7 32.Rf3 Nd5 33.d4+/–) 32.Rf3 Nb8 33.Be5 Rf3 34.Kf3 Nd7 35.Kf4 (35.d4 Ne5 36.de5 Kg7+/–) 35...Kg8 (35...Ne5 36.Ke5 c6 37.Kd6+–) 36.d4+/– Kf7 37.c4 (37.Kf5 Ne5 38.de5 Be3+/–) 37...Ba5 (37...Ne5 38.Ke5 Ke7 39.c5+/–) 38.Kf5+/– Ne5 (38...b5 39.Bf4 Bb6 40.c5+– (40.Bh6?! Bd4 41.Ng5 Kg8+/–)) 39.de5 b5 40.e6 Ke7 41.c5 (41.Nc5 bc4 42.Na6 Bb6+/–) 41...c6 (41...b4 42.ab4 Bb4 43.c6+/–) 42.Nf6 (better is 42.Nd6+/–) 42...Bc3? (42...Bd2 43.Ng8 Ke8 44.Kg6+/–) 43.Ng8+/– Kf8 (43...Ke8 44.Nh6 Bd4 45.Ng8+–) 44.Nh6 a5 (44...Bd4!?+/–) 45.Ke4 (better is 45.Nf7!?+–) ½–½. Schols,Andre – Bendig,Frank, corr or01–006 E–mail, 2001.

5.a3 Bc5 6.Be2 =+.

5.a3 Bf8 6.h4 h5?? 7.g4 hg4 8.Qg4 Rh6 9.h5 g5 10.Bg6 Ke7 11.a4 d5?? 12.Ba3+– c5 13.Bc5 Qd6 14.Bd6 Kd6 15.Qc8 Nc6 16.Qa8 1–0. wojtekkk – slaweczek69, internet, 2011.

5.Qg4 Nc6!? 6.Qh4 Kf7 +=.

5.Qg4 Qe7 6.Qh4 (6.a3 Bc5 7.Qa4 c6=) 6...f5 (6...g5 7.Qg3=) 7.Qe7+= Ne7 (7...Be7 8.Be5 Nf6 9.Bc7+=) 8.Be5+/– Rf8 9.Bc7 b6 (9...Nd5 10.Bg3+/–) 10.Be2 (10.a3 Ba5+/–) 10...d5 (10...Nd5!? 11.Bg3 f4 12.ef4 Nf4 13.Bf4 Rf4+=) 11.a3 (11.c3 Ba5+–) 11...Ba5+/– 12.Bf3 (12.Nc3 Bc3 13.dc3 Na6+/–) 12...Nbc6 13.Bd6 (13.Bf4 d4+/–) 13...Bb7 14.Ne2 0-0-0 15.Bg3 (15.Be7 Ne7 16.Nbc3 Kb8+/–) 15...Rd7 16.0-0 Ng8 (16...g5!? 17.h3 d4+=) 17.Rc1+/– Nf6 (17...Nge7!?+/–) 18.c4+– Kd8 (18...d4!? 19.Bc6 Bc6 20.Nd4 Kb7+–) 19.Nf4 Ke8 20.cd5 Ne5 (20...Nd8 21.Be2 Ke7 22.Bb5+–) 21.Be2 Nfg4 (21...Nd5 22.Bb5 Ke7 23.Bd7 Nd7 24.Nd5 Bd5+–) 22.Bb5 Rff7 (22...a6 23.Bd7 Nd7 24.Rc7+–) 23.d4 a6 (23...g5 24.de5 gf4 25.Bf4 Bd5 26.h3+–) 24.de5 (24.de5 Ne5 25.Bd7 Rd7 26.Nc3+–) 1–0. Bouvier,Clement (1785) – Delpech,Olivier (1775), Elancourt France, Open, 2010.

5.h4 d5 6.h5 g5 7.h6 Be6 8.e4 Ne7 9.Nf3 Nbc6 10.Bb5? (better is 10.a3 Bc5 11.Nc3–/+) 10...de4–+ 11.Ne5 (11.Nh2 0-0–+) 11...fe5 12.Be5 0-0 13.Bg7 Rf5 (14.Qe2 Nd4 15.Qe4 Nc2 (15...Rb5?! 16.Qd4 Qd4 17.Bd4–+; 15...Nb5?! 16.Qe6 Rf7 17.c3–+) 16.Qc2 Rb5–+) 0–1. cagey – cinder, Live Game Caissa's Web, 2004.

5.Qh5 Kf8 6.Qe5 Nc6 7.Qf4 Ke8–+.

5.Qh5 Kf8 6.Qe5 Bd6 7.Qf5 Qf6 8.Qf6 Nf6 9.Nf3 b6 10.d4 Ba6 (10...g6 11.a3-+) 11.Be2 (11.Ba6 Na6 12.a3 Re8-+) 11...Be2 12.Ke2 Na6 (12...Nc6 13.Nc3-+) 13.c3 c5 14.Nbd2 Re8 15.Kd3 cd4 16.cd4 Nb4 17.Kc3 (17.Ke2 Rc8-+) 17...Nbd5 (17...Rc8 18.Kb3 Nd3 19.a3-+) 18.Kd3 (18.Kb3-+) 18...Nb4 19.Kc3 Ne4 (better 19...Rc8!? 20.Kb3 Nd3 21.a3-+) 20.Ne4 Re4 21.Nd2 (21.a3 Nd5 22.Kb3 Ke7-+) 21...Re8 (better 21...Rg4 22.g3 Ke7-+) 22.e4 (22.Nc4 Ke7 23.e4-+) 22...Rc8 23.Kb3 Nd3 (better 23...Nc2 24.Nc4 Nd4 25.Kc3-+) 24.e5 Be7 25.Ne4 a5 (25...Kf7 26.a4-+) 26.g3 (26.a4 Kf7-+) 26...Nb4 (26...a4 27.Ka4 Rc4 28.Kb3 Rd4 29.Rhd1 Rb4 30.Kc3 Ne5 31.Nd6-+) 27.Rac1 (27.Nc3 Kf7-+) 27...Rc1 (27...Kf7!? 28.f4-+) 28.Rc1 Kf7 29.Rc7 Rd8 30.Rb7 (30.f4 Nd5 31.Rb7 g6-+) 30...Nd5 (30...Nc6 31.Rb6 Nd4 32.Kc4-+) 31.Kc4 (better 31.Nc3 Ke6 32.f4-+) 31...Nb4 (31...Ke6!? 32.Kd3 Rc8 33.g4-+) 32.a3?? (32.Kb3 Nc6 33.Kc4-+) 32...Nc2 (32...Rc8 33.Kb5 Nc6 34.d5 Ne5 35.d6-+) 33.a4 (better 33.d5 Na3 34.Kb3 a4 35.Ka4 b5 36.Ka5 Nc4 37.Kb5 Ne5 38.d6-+) 33...Na3?? (better 33...Rc8 34.Kd3 Nb4 35.Ke2 Rc2 36.Ke3 Ra2-+) 34.Kd3=+ h5 35.Rb6 (35.f4=+) 35...h4 (35...Rc8!?=+) 36.Nc5 (36.d5 hg3 37.hg3 Bb4+=) 36...Bc5 37.dc5 hg3 38.hg3 Rc8 39.Rb3 Rc5 40.Ra3 Re5 41.Rb3 Rf5 42.f4 Ke6 43.Rb5 Rf8? (better 43...Rb5!? 44.ab5 d5=) 44.Ra5 Rh8 (44...Rc8 45.Re5 Kd6 46.Rg5+/-) 45.Rg5 Kf6? (45...Rh1!? 46.Kc3+- (worse 46.Rg7 Ra1+/-)) 46.a5+- Ra8 (46...Rc8 47.a6 Ra8 48.Ra5+-) 47.Kc4 d6 (47...g6+-) 48.Kb5 Rb8 49.Kc6 Ra8 (49...Rc8 50.Kb7 Rc3+-) 50.Kd6 Ra6 (50...Kf7 51.Kc7 Kg8 52.Rc5+-) 51.Kc7 Ra7 52.Kb6 Re7 53.a6 Re6 54.Kb7 Re7 55.Kb8 Re8 56.Kc7 Re7 57.Kb6 Re6 58.Kb5 Re7 59.Rc5 Ke6 (59...g6 60.Kb6+-) 60.Rc6 (60.Re5 Kd6 61.Re7 Ke7 62.a7+-) 60...Kd5 61.Kb6 Re1 62.Rg6 Rb1 63.Ka7 (63.Kc7 Ra1+-) 63...Ke4 64.Rg7 Kf5 65.Rg8 Kf6 66.Ka8 Kf7 67.Rg5 Kf6 (67...Ke6 68.g4+-) 68.g4 Rb4 (68...Kf7 69.Ra5+-) 69.Rf5 Kg6 (69...Ke7 70.g5 Ke6 71.Rf6 Ke7 72.a7+-) 70.a7 Rb3 71.Rf6 (better 71.Rc5 Rb6 72.g5+-) 71...Kf6= 72.g5 Kf5 73.g6 Kg6 74.f5 Kf7 75.f6 Rc3 76.Kb8 Rb3 77.Ka8 Rc3 78.Kb8 Rb3 79.Ka8 ½-½. Bendega (2035) - campino13 (1855), lichess.org, 2020.

5.Qh5 Kf8 6.Qe5 Nf6 7.Qb2 Nc6 8.Nf3 d5 9.Bb5 Bd6 10.0-0 a6 11.Be2 (11.Bc6 bc6 12.Ne5 Bf5–+) 11...h6 (11...Kf7 12.d4–+) 12.d4 Kf7 13.c4 Re8 14.c5 Bh2?? (better is 14...Be7–+) 15.Kh2= Kg8 16.Nc3 Ne4 17.Rac1 Kh8 18.Kg1 Ng5 (18...Rb8 19.Bd3=) 19.Qb3 Ne7 (19...Ne4!?+=) 20.Ng5+/– hg5 21.Kh2 c6 (21...b6 22.cb6 Qd6 23.Kg1 cb6 24.Bf3+/–) 22.Rh1+– Kg8 23.Bd3 Bf5 24.e4 (24.Bf5 Nf5 25.Qb7 Qf6+–) 24...Be6 25.Kg1 Qc8 26.ed5 Nd5 27.Bh7 Kf8 28.Bg6 Nf4?? (better is 28...Rd8+–) 29.Rh8 Ke7 30.Re8 (30.Be8 Bb3 31.ab3 Qe6–/+) 30...Qe8 31.Qb7 (31.Be8?! Bb3 32.Bc6 bc6 33.ab3 Rb8+/–) 31...Qd7 32.Qa8 Ng6 33.Qa6 Qd4 (33...Nf4 34.Qa4+–) 34.Qc6 Ne5 (34...Nf4 35.Qc7 Qd7 36.Qe5+–) 35.Qb7 Kf6 (35...Bd7 36.c6! Nc6 37.Rd1 Qc3 38.Qd7 Kf8 39.Qc8 Kf7 40.Rd7 Kg6 41.Rd6 Kh7 42.Qc6 Qa1 43.Kh2 Qe5 44.Kh3+–) 36.Ne4 White prepares the advance c6 36...Kg6 (36...Kf5 37.Re1 Bd7 38.Qb6+–) 37.Qe7 Qe4 38.Qe6 Kh7 Black plans g4 39.Qh3 Kg8 (39...Kg6 40.c6! Nc6 41.Qe3+–) 40.c6! g4 (40...Qc6 41.Rc6) 41.Qb3 (41.Qb3 Kh7 42.c7+–) 1–0. b4_player – opponent, gamecolony.com, 2008.

5.Qh5 Kf8 6.Nf3 Nf6 (6...d6 7.c3 Nf6 8.Qh4–+) 7.Qe5 Nc6 8.Qf4 d5 9.h3 (9.Bb5 Bd6 10.Qa4 Ne5 11.Ne5 Be5–+) 9...Bd6 10.Qh4 Bf5 11.c3 h6 (11...Ke8 12.Qg5 Qd7 13.Bb5–+) 12.g4 (12.Bb5 Ne7 13.0-0 c6–+) 12...Be4 13.Ng5 Bh1 (13...Ne5 14.Ne6 Kg8 15.Be2–+) 14.Ne6 Kg8 (better is 14...Ke8 15.Nd8 g5 (15...Rd8?! 16.f4–+; 15...Kd8?! 16.f4–+; 15...Nd8?! 16.f4–+) 16.Nc6 bc6–+ (< 16...gh4 17.Nd4–+)) 15.g5 (15.Nd8 g5 16.Nc6 gh4 17.Nd4–+) 15...hg5 (15...Qd7!? 16.Nc7 Ne5 17.Be2 hg5 18.Qh8 Kh8 19.Na8–+) 16.Qg5 (16.Qh8 Kh8 17.Nd8 Rd8–+) 16…Qe7 (17.Nf4 Ne5–+; 16...Qd7 17.Nf4–+) 0–1. Menzel,Karsten – Froehner,Christian (2255), Mainz GER, 1995. Known even as "Metzger – Gomolla, 0–1, 1995".

5.Bb5 c6 6.Be2 Bf5 7.0-0 Nd7 8.d4 e4 9.Nfd2 Ne7 10.c4 0-0 (10...Qc7 11.Ba3 Ba3 12.Na3–/+) 11.cd5 (11.Qb3 Ba5=+) 11...cd5 (11...Nd5 12.Qb3 N7b6 13.Nc3–/+) 12.Nb3 (12.Qb3!? Qb6 13.f3 ef3 14.Bf3=+) 12...Rc8 13.Bg4 Qb6 14.Bf5 Nf5 15.a3 Bd6 16.a4 Ne7 17.a5 Qc7 18.Qg4 (18.Qh5 f5 19.Ba3 Nf6–/+) 18...f5 (18...Bh2 19.Kh1 f5 20.Qh5–+) 19.Qg5 (19.Qh3 Rf6 20.Ba3 Rh6 21.Bd6 Qd6–+) 19...Nf6 (19...Bh2 20.Kh1 Bd6 21.Rc1–+) 20.N1d2 (20.Rc1 Qb8 21.f4 ef3 22.gf3 Bh2 23.Kh1 Rc1 24.Nc1 Bd6–+) 20...Qc2 (better is 20...Bh2 21.Kh1 h6–+) 21.Ba3–/+ Ba3 22.Ra3 Rc3 23.h4? h6 24.Qg3 Rb3?? 25.Rb3 Qd2 26.Rb7 Re8 27.Qe5 Kf8–/+ 28.Qe6 Qa5–+ 29.Rfb1 (29…Qa2 30.Qd6–+). communist – paladin1985, Live Game Caissa's Web, 2004.

5.c4 Ne7 6.Be2 Nbc6 7.0-0 0-0 8.a3 Ba5 9.Qc2 Bf5–/+ 10.Qb3 Bb6 11.Rc1 Na5 12.Qa4 dc4 13.Bc4 Nc4–+ 14.Rc4 Qd3 15.Nc3 Rad8 16.Ne1 Qd7 17.Qd7 Rd7 18.Rd1 Rfd8 0–1. McRiley – FleurDeLys, ICC, 1999.

5.Nh4 Be6 (5...Ne7!?-/+) 6.Qh5=+ Bf7 7.Qg4 Bd6?? (better 7...Bf8=+) 8.Qg7+- f5 9.Qh8 (9.Nf5?! Qf6 10.Bb5 Nc6+-) 9...Qh4 10.Be5 Nd7 (10...Nc6 11.Bd6 cd6 12.Bd3+-) 11.Bd6 cd6 12.Nc3 0-0-0 (12...Qf6 13.Qf6 (13.Qh7 d4 14.Nb5 de3+-) 13...Ngf6 14.Rb1+-) 13.Qd4 (13.Nb5!? Nc5+-) 13...Qd4 14.ed4 Ngf6 (14...Re8 15.Be2 a6 16.0-0+-) 15.Nb5 Nb6 (15...Kb8 16.Nd6 Bg6 17.Bd3+-) 16.Na7 Kb8 (16...Kc7 17.Nb5 Kc6 18.f3+-) 17.Nb5 Bg6 (17...Nc4 18.f3+-) 18.f3 f4 19.Kd1 Nc4 (19...Nc8 20.Bd3 Bd3 21.cd3+-) 20.Bc4 dc4 21.Re1 Rd7 (21...Bf5 22.Re7 Bc8 23.Rb1+-) 22.Re6 Ne8 23.a4 Bf7 (23...Kc8 24.Kc1+-) 24.Re4 Nc7 25.Rf4 Nb5 26.ab5 Re7 (26...Kc7+-) 27.b6 d5 (27...Kc8 28.Ra5 Kd7 29.d5 Bd5 30.Rd5+-) 28.Ra5 Bg6 (28...Be8 29.Rf6 Bf7 30.Rd5+-) 29.Rd5 (29.Rf8 Re8 30.Re8 Be8 31.Rd5 Kc8+-) 29...Kc8 (29...Re8 30.h4 Rc8 31.h5+-) 30.Rf8 Be8 31.f4 (31.f4 Re6 32.f5 Rb6 33.Re8 Kc7 34.Re7 Kc8 35.Re6 Rb1 36.Ke2+-) 1-0. Akimov,Gennadiy (2025) - Gostev,Yuri, Dimitrovgrad Championship Open, 2009.

5.c3 Ba5 6.d4 ed4 (6...Ne7 7.Bd3=+) 7.Nd4 Bb6 8.Bd3 Bd7 (8...Ne7 9.0-0=) 9.Qh5 Kf8 10.0-0 Nc6 11.Nc6 Bc6 12.c4 (12.Bh7?? Be4!?-+) 12...Nh6 13.Nd2 Qe7 14.Rae1 Ba5?? (better 14...Nf7=+) 15.Nf3?? (better 15.Qa5 b6 16.Qh5+-) 15...Be1-+ 16.Re1 Bf3 (16...Qe8 17.Qa5 b6 18.Qa6-+) 17.gf3 (17.Qf3!? c6 18.Qf4-+) 17...Qf7 18.Qb5 Rb8 19.Kh1 (19.Qa5 a6-+) 19...Ke7 (19...a6 20.Qb4-+) 20.c5 (20.Qa5 Rhc8-+) 20...c6 (20...Rhc8!? 21.cd6 cd6 22.Qa4-+) 21.cd6-/+ Kd6 22.Ba3 Kc7 (22...Kd7!? 23.Qa4 Ra8-/+ (23...Qa2 24.Rd1 Kc8 25.Bc4+-)) 23.Qa5=+ b6 24.Qa7 Rb7 25.Qa4 Rd8 (25...Qe6 26.Rc1 Rc8 27.Be4+-) 26.Rc1 (26.Be4 Qd7 27.Rc1+-) 26...Qe6 (better 26...Rd3!? 27.Qc6 Kb8 28.Bd6 Rd6 29.Qd6 Rc7 30.Qb6 Kc8 31.Qa6 Kb8 32.Qb6 Kc8 33.Qa6 Kb8 34.Qb6=) 27.Be4+- Do you see the mate threat? 27...b5? (better 27...Rd5+-) 28.Qa5+- Kb8?? (28...Rb6+-) 29.Qd8 Qc8 30.Bd6 Rc7 (30...Ka8 31.Rc6 Rb6 32.Rc8 Ka7 33.Ra8) 31.Qc8 (31.Bc7 Ka7 32.Qc8 b4 33.Qb8 Ka6 34.Rc6) 31...Kc8+- 32.Bc7 Kc7 33.Rc6 (33.Rc6 Kd7 34.Rb6+-) 1-0. aravind555 – topnicar, lichess.org, 2018.

5.Be2 Bg4 (5...d5 6.0-0–/+) 6.0-0 (6.c3 Bc5=) 6...Nc6 7.c3 Bc5 8.d4 ed4 (8...Bb6!?=+) 9.cd4 Bb6 10.Qc2 Nge7 11.Nbd2 Qd7 12.h3 Bh5 13.Bc4 (13.Rae1 0-0=+) 13...h6 (13...d5 14.Bb5=+) 14.a4 Bg6 15.Qb3 0-0-0?? (better is 15...Na5 16.Qc3 d5=) 16.a5 (16.Be6 Na5 17.Bd7 Rd7+–) 16...Ba5?? (16...Na5 17.Ra5 d5+/–) 17.Ra2 Bd2?? 18.Nd2 Nb8?? 19.Rfa1 a6?? 20.Bc3 Rhf8?? 21.Qa4 Qa4 22.Ra4 Bf7 23.Bb4?? Bc4–+ 24.Nc4 Nf5 25.Na5 b6 26.Nc4 b5 27.R4a2 bc4 28.Rb2 Rfe8 29.Bc3 Ne3 30.fe3 Re3 31.Rc2 Rde8 32.Rac1 R8e7 33.Rb1 Kd8 34.Bd2?? Re2 35.Rb8–/+ Kd7 36.Kf1?? R2e5 37.Rbb2 (37…Rf5 38.Kg1=+; better is 37.de5 fe5 38.Rc4+–). Slavisa2 – StillSleeping, Live Game Caissa's Web, 2004.

5.Qg4 Nc6 6.Nf3 d6 (6...Nge7 7.Bb5-/+) 7.Bb5?? (better 7.Qh4-/+) 7…Bg4-+ (7...Bg4 8.a3 Ba5-+) 0-1. aravind555 – huwcle, lichess.org, 2018.

5.Qg4 d6?? 6.Qb4+- Nc6 7.Qb3 Qe7 (7...Nge7 8.Nf3+-) 8.Bc4 Nh6 9.Ne2 Na5 (9...Kd8 10.Bd5+-) 10.Qb5 c6 (10...Nc6+-) 11.Qa5 (11.Qa5 d5 12.Bb3+-) 1-0. aravind555 (1620) - sud9999 (1620), lichess.org, 2018.

5.Qg4 Ne7?? 6.Qb4+– Nbc6 7.Qb3 d5 8.Nf3 e4 9.Bf6 (better is 9.Ng1+–) 9...ef3?? (better is 9...Rf8 10.Be7 Qe7+–) 10.Bh8 Be6 11.Qb2 Kd7 12.Bf6 b6 13.gf3 Qf8 14.Bb5 a6 15.Be7 Qe7 16.Bc6 Kc6 17.e4 (better is 17.f4 Kb7+–) 17...de4 18.fe4 Bd5 19.d3 (better is 19.Kd1 Qe4 20.Qf6 Qe6 21.Qe6 Be6 22.Nc3+–) 19...Kb7 (19...Be4 20.Rg1 Bd3 21.Kd2 Qe2 22.Kc1 Qf2+–) 20.Nd2 Rf8 21.0-0-0 Bg8 22.f3 h5 23.Rhg1 Bh7 24.a4 g5 25.a5 b5 26.Qb3 Bg8 27.Qc3 g4 28.fg4 hg4 29.Rg4 Be6 30.Rg7 Qd8 31.Nb3 Bb3 32.Qb3 Qf6 33.Qd5 Kb8 34.Rg8 Ka7 35.Rf8 Qf8 36.Kd2 Qf4 37.Kc3 Qh2 38.Rd2 Qh8 39.Qd4 1–0. revbodio1 – Strac58, Live Game Caissa's Web, 2004.

5.Qh4 Nc6 6.Bd3 f5 7.Qc4 d5 8.Qb5 (8.Qb3 Qd6-/+) 8...a6 9.Qa4 a5 (9...Bd6!?-/+) 10.Bb5 (10.Be5 Nf6=) 10...Bd7=+ 11.Bc6? (better 11.f4 d4 12.a3=) 11...Bc6-+ (11...bc6 12.Be5 Qg5 A) 13.Bh8? Qg2 14.c3 Qh1 15.cb4 Qg1 16.Ke2 Qg4 17.Kf1 c5-+ (17...Qb4?! 18.Nc3-/+); B) 13.Kf1+-) 12.Qb3 e4?? (better 12...Qg5 13.Kf1 Qe7-+) 13.Bh8+- a4 (13...Bd6+-) 14.Qb4 Ne7 (14...Qg5 15.g3+-) 15.Bf6 Qd7 16.Be7 Qe7 17.Qe7 (17.Qc3 Kf7+-) 17...Ke7 18.Nc3 a3 (18...h6 19.Nge2+-) 19.Nge2 b5 (19...b6 20.Rb1+-) 20.Nd4 Bd7 21.Ncb5 (21.Nd5 Kd6 22.Nf6 c5+-) 21…c6 (21...c5 22.Nc7 Rb8 23.Na6+-) 1-0. aravind555 - Armando_12, lichess.org, 2020.

5.Qh4 d6 6.Qb4 Nc6 7.Bb5 Bd7 8.Bc6 Bc6 9.Nf3 Ne7 10.Qb3 Qd7 11.0-0 (11.d4 Qg4 12.Nbd2 Qg2+-) 11...Bf3+- 12.gf3 Qh3 (12...0-0-0!?+-) 13.Qb7+- 0-0 14.Kh1?? (better 14.Qc7 Qf3 15.Rc1+- (15.Qe7?! Qg4 16.Kh1 Qf3 17.Kg1 Qg4 18.Kh1 Qf3 19.Kg1=)) 14...Rab8 (14...Qf1) 15.Qe4?? (15.Qa6 Rb2 16.Qe2 Rc2-+) 15...Rb2 (15...Qf1) 16.Qg4?? (16.Nc3 c6-/+) 16...Qg4 (better 16...Qf1 17.Qg1 Qg1 18.Kg1 Rc2-+) 17.fg4 Rc2 18.d4 (18.Rd1 Rb2-+) 18...Rb8 19.Na3 Re2 20.de5 de5 21.Nc4 Rb4 22.Na5 Rg4 23.Nb3 (23.Rac1 Ra2 24.Rc7 Kf8-+) 23...Ra4 (23...Rc4 24.Kg1-+) 24.Nc1 (24.a3 Nd5-+) 24...Rc2 25.Kg2 Nf5 (better 25...Nd5 26.Kg3-+) 26.Kf3 (26.Re1 e4-+) 26...e4 (better 26...h5!? 27.e4 Nh4 28.Kg3 Re4 29.h3-+) 27.Kf4 Rb4 (27...h5!? 28.Nb3-+) 28.Nb3 (28.a3 Ra4-+) 28...c5 (better 28...a6-+) 29.a3 (29.Rac1 Ra2 30.Nc5-+) 29...Rb3 30.Ke4 (30.Rac1 Ra2-+) 30...Rbb2 (30...Nd6!? 31.Kd5 Rd2 32.Kc6 Rb6 33.Kc5 Ne4 34.Kc4 Rc6 35.Kb5-+) 31.Kf3 g5 (31...Rc3 32.Rac1 Nd4 33.Ke4-+) 32.a4 (32.Rac1 c4-+) 32...Nh4 33.Kg3 f5 (33...Rb4 34.Ra3-+) 34.Rad1 (34.Rac1 Kf7-+) 34...Rd2 (34...h5 35.Rd3-+) 35.Rc1 (35.Rd2 Rd2 36.Rc1 Ra2-+) 35...Rbc2 36.Rb1 (36.Rc2 Rc2 37.Rd1-+) 36...Rb2 (36...h5 37.Rb3-+) 37.Rbc1 Rdc2 (37...Rb4 38.Rc5 Ra4 39.Kh3-+) 38.Rcd1 Rb7 (38...h5!? 39.Rd3-+) 39.Rd5 Kf7 40.Rd6 (40.Rfd1 c4 41.Rd7 Rd7 42.Rd7 Kg6-+) 40...Ra2 (40...h5!? 41.Rd3-+) 41.Rh6 Kg7 42.Ra6 (42.Rc6 Ra4 43.Rc5 Rb3-+) 42...c4 43.Rc6 (43.Rc1 Rc7-+) 43...Ra4 44.Rc1 Rab4 (better 44...h5 45.h3-+) 45.Ra6 (45.R6c4 a5-+) 45...Rc7 46.h3 (46.Ra3 c3! 47.f4 c2-+) 46...c3 47.Ra3 c2 48.Ra2 (48.Raa1-+) 48...Rb1 49.Rcc2 Rc2 (49...Rg1 50.Kh2 Nf3) 50.Rc2 (50.Ra7 Kh6 51.Ra6 Kh5 52.Rh6 Kh6 53.Kh2 Rf2 54.Kg3 Rg2) 50...a5 (50...Rg1 51.Kh2 Nf3) 51.Ra2 (51.Rc7 Kg6 52.Kh2 a4-+) 51...Rb5 (51...Rg1 52.Kh2 Nf3) 52.f4 h6 53.Ra4 (53.Kf2 Kf6-+) 53...Ng6 (53...Rb2 54.fg5 hg5 55.Rh4 gh4 56.Kh4 Rg2 57.Kh5 Kf6 58.Kh4 Rg5 59.e4 f4 60.e5 Kf5 61.e6 Rg7 62.e7 Rh7) 54.fg5 hg5 55.Kf3 (55.Kg2 Kf6-+) 55...Ne5 (55...Rb2 56.Kg3-+) 56.Kf2 (56.Ke2 Kf6-+) 56...Nd3 57.Kf3 (57.Kg2 Nc5 58.Ra2 a4-+) 57...Nb2 (better 57...Rb2!? 58.Ra1 a4 59.h4 gh4 60.e4-+) 58.Ra3 a4 59.Kg3 (59.Ke2 Rb3 60.Ra1 a3-+) 59...Rb3 60.Ra2 Re3 61.Kf2 (61.Kh2 a3-+) 61...Nc4 (better 61...Rh3 62.Kg2 Rb3 63.Ra1-+) 62.Ra4 Ne5 (better 62...Rc3-+) 63.Ke3= (63.Ke3 Ng6 64.Kf3=). aravind555 (1730) - alaa1234567 (1740), lichess.org, 2020.

5.Qh4 Qe7 6.Bc4 Kf8 7.Nf3 c6 8.a3 Ba5 9.a4 d5 10.Ba3 Bb4 11.Bb3 Ba3 12.Na3 Be6 13.0-0 Kg7 14.c4 Nd7 15.cd5 cd5 16.Rfc1 Nh6 17.Nb5?? Nf5–+ 18.Qh3 Nd4 19.Qg3 Nb3 20.Rc7 Na1 21.d4 a6 22.de5 ab5 23.ef6 Qf6 24.Ne5 Rhd8 25.Ng4 Bg4 26.Qg4 Qf5 27.Qb4 Rac8 28.Qe7 Qf7 29.Qd6 Rc7 30.Qc7 Qe7 31.g3 Nf6 32.h3 ba4 33.g4 a3 34.g5 Ne4 35.f3 Nc5 (35...Nc5 36.Qe7 Kg8 37.Qd8 Kf7 38.Qd5 Ne6 39.Qd7 Kf8 40.Qe6 Nc2+–; 35...Qc7 36.fe4 Qg3 37.Kf1 de4 38.h4 Rd1 39.Ke2 Qf3) 0–1. elsh1403 – lakyluciano (1650), internet, 2011.

6.c4 Nc6 7.Nc3 d6 8.d4 (8.Nd5!?-/+) 8...ed4 9.ed4 f5 10.Qf4 Bg5 (10...Bg5 11.Qg3 Nd4-/+) 0-1. jhonores (2205) - cazadordepollos (2215), Rated Blitz game, lichess.org, 2020.

6.Bd3 f5 7.Qa4 Bf6 8.Nc3 Nc6 9.Nd5 d6 10.h4 (10.Nf6 Nf6 11.Bb5 Bd7+=) 10...Bd7 11.Ne2 e4 (11...Nd4! 12.Qb4 c5–/+) 12.Nf6+= Nf6 13.Bb5 Rf8 (13...a6 14.Bc4–/+) 14.Nf4 a6 15.Be2 b5 16.Qb3 Na5 17.Qc3 c5 18.d4 (18.0-0 b4 19.Qf6 Rf6 (19...Qf6?! 20.Bf6 Rf6 21.Nd5=) 20.Bf6 Qf6–+) 18...ed3 (18...cd4 19.ed4 Rc8 20.Qa3+=) 19.cd3 b4 20.Qd2 Rb8 21.0-0 Nc6 22.Rac1 a5 23.f3 (23.Qc2 Ng4 24.g3 g5 25.hg5 Qg5+=) 23...a4 24.e4 (24.d4!? a3 25.Ba1+=) 24...a3 25.Bf6 (25.Ba1!?–/+) 25...Qf6–+ 26.g3 b3 (26...b3 27.ab3 Qd4 28.Kh2 Rb3–+) 0–1. Morin – Grehl,Siegfried, corr SOK–89–29, 1989.

6.Bd3 f5 7.Qa4 Bf6 8.Nc3 Ne7 9.Nh3 0-0 10.0-0 d5 11.f4 e4 12.Be2 a6 13.Nd1 b5 (13...c5!?–/+) 14.Bb5+= c6 (14...ab5 Exploits the pin 15.Qa8) 15.Be2 Bd7 (15...Nd7 16.Bf6 Nf6 17.Rb1=) 16.Bf6+= Rf6 17.Qd4 Rf8 18.Nb2 Nc8 (18...Bc8 19.Qc3+=) 19.Nc4 (19.Na4 Qe7+=) 19...Qf6 (19...Be6 20.Ng5 Qe7 21.Ne5+=) 20.Ne5 Be6 21.Rab1 Nd6 22.a4 Nf7 (22...h6!?+/–) 23.Nc6!+– White launches an attack 23...Qd4 (23...Nc6 24.Qf6) 24.Nd4 Re8 (24...Bd7 25.a5+/–) 25.Rb6 Bd7 26.a5 Rc8 27.Rfb1 Nc6? (better is 27...Ba4+–) 28.Ba6 Rc7 (28...Na5 29.Bc8 Rc8+–) 29.Bb7 Nd4 30.Ba8 (30.ed4?! Ra5 31.c3 Bc8+/–) 30...Nc2 31.Bd5 Kg7 (31...Rc5 32.Rd6 Bc6 33.Rc6 Rd5 34.Rc2 Rd7+–) 32.Rb7 Rb7 (32...Bc6 33.Rc7 Bd5 34.Rc2+–) 33.Rb7 Be8 34.a6 (34.a6 Kh6 35.a7+–) 1–0. b4_player – opponent, gamecolony.com, 2008.

6.Nf3 d6 7.Bc4 Kf8 8.0-0 d5 9.Bb3 c6 10.c4 Be6 11.Nc3 Na6 12.cd5= cd5 13.e4 Nc5 14.Bd5 Bd5 15.Nd5 b6 16.d4 Nd3 17.Bc3 f5 18.Qg3 f4? 19.Qh3+– Nf6 20.de5 Ne4+/– 21.Ne7 Qe7 22.Bd4 Rd8 23.e6 Rg8 24.Qh6 Ke8 25.Rad1 Ndc5 26.Bc5+– Nc5 27.Rd8 Kd8 28.Ne5 (28.Ne5 Qe6 29.Qf4+/–) 1–0. elsh1403 – hazielklop, internet, 2011.

6.f4 d6 7.Nf3 c5 8.Be2 e4 9.Ng5 fg5?? 10.fg5+/– Bg5 11.Qe4 Qe7 12.Qe7 Ne7 13.Bh8 Nbc6 14.0-0 d5 15.Nc3 Be6 16.Nb5 0-0-0 17.Bf6 Bf6 18.Rf6 Bf5 19.Rc1 a6 20.Nd6 Kc7 21.Nf5 Nf5 22.Rf7 Rd7 23.Rd7 Kd7 24.g4 Nd6 25.c3 b6 26.d4 c4 27.Bf3 Ne7 28.Re1 b5 29.e4 de4= 30.Be4 a5? 31.Kf2 b4 32.cb4 ab4 33.Bb1 Nc6 34.d5 Nd4 35.Ke3 N6b5? 36.Rd1+– c3? 37.Rd4 Na3 38.Rb4 c2 39.Rb7 Kc8 40.Bc2! Kb7 41.Bb3 Kc7 42.Kf4 Kb8 43.Kg5 Kc7 44.Kh6 Kd6 45.Kh7 Nb5 46.Kg6 Nd4 47.h4 Nf3 48.h5 Ne5 49.Kf5 Nf7 50.g5 Ne5 51.g6 (51.g6 Nf3 52.g7+–) 1–0. elsh1403 (1675) – okena (1725), internet, 2011.

6.f4 d6 7.Nf3 Nc6 8.Bd3 f5 9.Ng5?? Bg5 10.fg5 Nge7 11.0-0–/+ Be6 12.g4 Qd7 13.gf5 Nf5 14.Bf5 Bf5 15.c4 0-0-0 16.Nc3 Rdf8 17.Nd5 Be6 18.Nf6 Qg7 19.Rac1 h6 20.d4 hg5 21.Qg5 Qh6?? 22.Qh6= Rh6 23.d5 Bh3 24.dc6 Bf1 25.cb7 Kb7 26.Rf1 Rh3 27.Bc1 Kc6 28.Kg2 Rfh8 29.Rh1 Kc5 30.e4 Kc4 31.Be3?? Re3–+ 32.Nd5 Re2 33.Kf3 Rhh2 34.Rc1 Rc2 35.Rc2 Rc2 36.Nc7 Ra2 37.Ne8 Kc5 38.Ng7 Ra3 39.Kg4 Re3 40.Kg5 Re4 41.Kg6 Rf4 0–1. elsh1403 – bruziewicz (1745), internet, 2011.

4.b5 c6 5.c4 c5 6.cd5 Qd5 7.Nc3 Qd7 8.Bc4 (better 8.Nf3+-) 8...b6? (better 8...Qg4 9.Qb3 Nh6+-) 9.Bd5 Bb7 10.Qf3 Bc8 (10...Bd5 11.Nd5 a5 12.Nb6 Qb5 13.Qa8 Qb6+-) 11.Ba8 a6 (11...Bd6 12.Qe4+-) 12.Nd5 Qa7 (12...Ne7 13.a4 Nd5 14.Bd5 ab5 15.ab5 Qb5 16.Bc3+-) 13.Bc6 (13.a4!? Kf7 14.Nc3 Ne7+-) 13...Nc6 14.bc6 Bd6 15.Ne2 Be6 (15...Nh6 16.Nec3 0-0 17.Ne4+-) 16.0-0 Ne7 (16...f5 17.e4 Nh6 18.Qd3 fe4 19.Qe4+-) 17.Nf6! gf6 18.Qf6 Rf8 (18...Rg8 19.Qe6 Qc7 20.Ng3 Qc6 21.Qh3+-) 19.Qe6 Qc7 20.Ng3 Qc6 21.Nh5 Qd7 (21...Kd8 22.Be5 Bb8 23.Nf4 (23.Bb8?! Qe6 24.Nf4 Qf5=) 23...Be5 24.Qe5+-) 22.Nf6 Rf6 23.Qf6 Kd8 (23...Ng6 24.f4 Qe7 25.fe5 Ne5 26.Qf5+-) 24.Be5 Be5 25.Qe5 1-0. DEFFM – GuestWZMW, freechess.org, 2019.

4.b5 Bd7 5.c4 Be6 6.cd5 Bd5 7.Nc3 c6 8.Nf3 a6 9.a4 cb5 10.Nd5 Qd5 11.ab5 e4 12.Nd4 Nd7 13.ba6 Rb8 14.a7+– Ne7?? 15.ab8Q Kf7 16.Qc7 Ne5 17.Ra5 Qd7 18.Qd7 Nd7 19.Bc4 Ke8 20.Ra8 Nb8 21.Qa4 Nec6 22.Rb8 Ke7 23.Rb7 Kd6 24.Qc6 Ke5 25.Qe6# 1–0. pcmvr (2870) – alctay (1700), net–chess.com, 2009.

4.b5 Be6 (--> 3.b5 d5 4.e3 Be6).

4.b5 Bf5 (--> 3.b5 d5 4.e3 Bf5).

4.Bb5 c6–/+ 5.Be2 Bb4 6.Bh5 g6 7.Be2 Nh6 8.c3 Bd6 9.a4 0-0 10.Ba3 c5 11.d4 ed4 12.cd4 c4 13.Bd6 Qd6 14.Nc3 a6 15.Nf3 Bf5 16.0-0 Nc6 17.Nh4 Kh8 18.Bf3 Ne7 19.a5 Rf7 20.Na4 Rg8 21.Nb6 Bd3 22.Be2=+ Bf5 23.Nf3 g5 24.Nd2 g4 25.g3 Rfg7 26.e4 Be4 27.Ne4 de4 28.Nc4 Qe6 29.Ne3 Nhf5 30.d5 Qf7 31.Nf5 Nf5 32.Bc4 Rd8 33.Qb3 Nd4 34.Qa2 Qh5 35.f4 Nf3 36.Kh1 Rc8 37.Rac1 Rd8 38.Qg2 Nd4 39.Qe4= Nb3?? 40.Bb3+– f5 41.Qg2 Qg6 42.Rfd1 Qd6 1–0. TIROLOCO – HOUDINI2, Live Game Caissa's Web, 2004.

4.c3 Be6+=.

4.c4 a6 5.cd5 Qd5 6.Nc3 Qc6 7.Bd3 (7.a3!?=) 7...Qg2=+ 8.Be4 Qg5 (8...Qg4 9.a3 Qd1 10.Rd1=+) 9.Nf3 Qh5 10.Nd5 Bd6 (10...Kd8 11.Rc1 Ra7 A) worse 12.Nc7 Nc6=+ (worse 12...Bb4 13.Nd5 Ba5 14.Ne5 Qd1 15.Kd1 fe5 16.Be5+-); B) 12.d4=) 11.Rc1 Nc6 (11...Kd8!? 12.d4 ed4 13.Bd4 Nd7=) 12.Rc6!+- bc6 13.Nc7!? A double attack 13...Bc7 14.Bc6 A double attack. 14...Ke7 (14...Bd7 15.Ba8 Ne7 16.d4+-) 15.Ba8 Bf5 16.Bd5 e4? (better 16...Nh6+-) 17.Qc2+- Kd6?? (17...Bd6 18.Nd4 Nh6+-) 18.Qc6 Ke7 19.Qc7 Bd7 20.Be4 (20.Rg1 g6 21.Ng5 fg5 22.Qe5 Kd8+-) 20...Nh6 21.Ba3 Qb5 (21...Qe8 22.Rg1 g6 23.b5 Kf7 24.Bd5 Kg7 25.ba6+-) 22.Nd4 (better 22.Bc6 Rd8 23.Bb5 ab5 24.Rg1+-) 22...Qa4 23.Nc6 Ke8 24.Qd8 Kf7 25.Qe7 Kg8 26.Bd5 Nf7 (26...Be6 27.Qe8) 27.Bf7 (27.Qf7) 1-0. DEFFM – GuestWMTN, freechess.org, 2020.

4.c4 Ne7 5.cd5 Nd5 6.b5 Bd7 7.Bc4 (7.f4 Bf5 8.fe5 Nb4 9.ef6 Nc2 10.Kf2 Na1 11.fg7 Rg8 12.Ba1 Bg7 13.Bg7 Rg7=) 7...Nb6 8.Bd3 c6?? (better 8...Be6 9.Qc2 g6=) 9.Qh5+- g6 10.Bg6! hg6 A pinning theme 11.Qh8 A pinning theme 11...Ke7? (better 11...Qe7 12.Ba3 Qg7 13.Qf8 Qf8 14.Bf8 Kf8+-) 12.Qh7 Ke8 (12...Kd6+-) 13.Qg6 Ke7 14.Ba3 Ke6 (14...c5 15.Bc5 Ke6 16.Qg8 Kf5 17.g4 Ke4 18.f3 Kd3 19.Qb3) 15.Nf3 (15.Qg8 Kf5 16.g4 Ke4 17.f3 Kd3 18.Qb3) 15...Ba3+- 16.Na3 (better 16.Ng5 Kd6 17.Nf7 Kc7 18.Nd8+-) 16...Be8 (16...Qf8 17.Nc2 cb5 18.d4+-) 17.Qg4 (better 17.Ng5! Kd7 18.Qf5 Kd6 19.Qd3 Nd5 20.Nc4 Kd7 21.Qf5 Kc7 22.Ne6 Kc8 23.Nd8 Kd8 24.e4+-) 17...Ke7 18.h4 (18.d4 N6d7 19.0-0 Qa5+-) 18...N8d7 (18...Qd6 19.Nc2 cb5 20.d4+-) 19.h5 (19.h5 Bf7 20.bc6 bc6 21.Nh4+-) 1-0. aravind555 – Vulfpack, lichess.org, 2018.

4.d3 Bd6 5.d4 (5.a3 a5 6.b5 Ne7+=) 5...e4 (5...ed4 6.Bd4 Bb4 7.Bc3–/+) 6.Qh5 (6.c4!?=) 6...g6–/+ 7.Qd5?? (better is 7.Qd1 Bb4 8.Nd2–/+) 7...Bb4–+ (7...Bb4 8.c3 Qd5 9.cb4 Nc6–+) 0–1. Ivanov,Daniel (1755) – Zhelyazkov,Vergil, Kesarovski Georgiev Memorial 7th, 2008.

4.d3 Be6 5.Nf3 (5.c3 c5+=) 5...Bd6 (5...Bb4 6.Nbd2–/+) 6.d4 (6.a3 Nh6=) 6...e4–/+ 7.Nfd2 Ne7 (7...Bb4 8.c3 Bd6 9.Qb3+=) 8.c4 c6 (8...Bb4 9.Bc3 Nec6 10.Bb4 Nb4 11.Qb3=) 9.Qb3 f5 10.Nc3 0-0 11.g3 Nd7 12.c5 Bc7 13.Ne2 Ng6 Black plans f4 14.Bh3 Nf6 15.a4 Qe7 16.b5 Kh8 17.Ba3 f4 18.Be6 fe3 19.fe3 Qe6 20.0-0-0 (better is 20.Rb1!?–/+) 20...Ng4–+ 21.Rdf1 Nf2 22.Rhg1 Qh3 23.Nf4? (better is 23.bc6!? bc6 24.Qb7–+) 23...Nf4–+ (23...Bf4?! 24.Rf2 Bg5 25.Rgg2–+; 23...Qh2?! 24.Rg2 Nd3 25.Kd1–/+) 24.gf4 (24.ef4 Nd3 25.Kb1–+) 24...Nd3 25.Kb1 Qe3 26.Qc3 Rf4 27.Bc1 Qe2 28.Rd1 (28.bc6 bc6 29.Rf4 Bf4–+) 28...Rf2 0–1. Miljanovic,Zeljko (1920) – Mance,Milivoj, CRO–chT2 West, 2005.

4.Bd3 Bb4 5.Qh5 Kf8 6.c4 e4 7.Be2 Ne7 8.cd5 Nd5 9.Bc4 c6 10.Bd5 cd5 11.Ne2 Nc6 12.0-0 Be6 13.Bc3 Bf7 14.Qg4 Rc8 15.a3 Bc3 16.Nbc3 Ne5 17.Qg3 h5 18.h3 h4 19.Qf4 g5 20.Qh2 Bh5 21.Nd4 a6?? 22.Ne6+– Kf7 23.Nd8 Rhd8 24.Rab1 b5 25.f4 ef3 26.gf3 Bf3 27.Qf2 Rc4 28.d4 Rc3 29.de5 Be4 30.Qf6 Ke8 31.Qf7 (31.Qe6) 1–0. wojtekkk (1605) – organmaskin, internet, 2011.

4.Bd3 Bd6 5.Qh5= g6 6.Bg6!+/– Kd7 7.Bf5 Kc6 8.Bc8 Qc8 9.a4 b5?? 10.ab5+– Kb5 11.c3 Ne7 12.Ra5 Kb6 13.Qe2 c6 14.c4 Bb4 15.Ra2 c5 16.Bc3 Nbc6 17.Rb2 a5 18.Nf3 d4 19.ed4 ed4 20.Bb4 ab4 21.0-0 Re8 22.Qd3 Ne5 23.Ne5 fe5 24.Qe4 Qf5 25.Qh4 Ng6 26.Qh6 Rg8 27.g3 Qf6 28.d3 Qg7 29.Qg5 Nf4–/+ 30.Qg7 Rg7 31.Nd2? Nd3–+ 32.Rb3 Nf4 33.Ne4 Ne2 34.Kg2 Nc3 35.Nd6 e4 36.Re1 Re7 37.Nf5 d3 38.Ne7=+ d2 39.Rf1 Kb7?? 40.Nd5+– d1Q 41.Rd1 Nd1 42.Kf1?? Ra3 43.Rb1–/+ Nc3 44.Nc3 Rc3 45.Ke2 Rc4 46.Ke3 Kc6 47.Rb3 Kb5 48.Kf4 Rc3 49.Rb2 Ka4 50.Ke4? Ka3 51.Rb1 b3 52.Kd5 b2 53.Ke4 Rc1 54.Rb2 Kb2 55.f4 Kc3 56.Kf3 Kd3 57.Kg4 c4 58.h4 Re1 59.f5 c3 60.f6 c2 61.f7 c1Q (61...c1Q 62.f8Q Re4 63.Qf4 Rf4 64.Kg5 Re4 65.Kf6 Qc6 66.Kf7 Qg6 67.Kf8 Re8; 61...Re4 62.Kg5 c1Q 63.Kh5 Re5 64.Kg4 h5 65.Kf3 Qf1) 0–1. wojtekkk – afiz (1640), internet, 2011.

4.d4 Bb4=+ 5.c3 Bd6 6.Nf3 e4–/+ 7.Nfd2 b6?? 8.Be2?? Ne7–/+ 9.0-0 Nbc6 10.f3 0-0 11.fe4= de4 12.Ne4+= f5 13.Nd6 Qd6 14.c4 Qg6 15.d5 Nb4 16.Rf3 Rf7 17.Rg3 Qh6? 18.Rh3?? Qd6+= 19.Nc3 f4 20.Nb5 Qg6?? 21.Rf3?? fe3 22.Re3 Bf5?? 23.Rg3 Qh6+/– 24.Ba3 Nc2+= 25.Rc1 Na3=+ 26.Bd3?? Nb5–+ 27.Bf5 Rf5 28.cb5 Raf8 29.d6 cd6 30.Qb3 d5 31.h3 (31.h3 Qc1 32.Kh2 Rf1 33.Qd5 Nd5 34.Rf3 R8f3 35.gf3 Qf4 36.Kg2 Ne3#) 0–1. Nautiluschess – lloydx, ICS blitz, 2000.

4.d4 ed4 5.Qd4 Nc6 6.Bb5 Qd7 7.Bc6 Qc6 8.Nc3 Be6 9.Nf3 Ne7 10.0-0 Nf5=+ 11.Qf4 0-0-0 12.b5 Qc5 13.a4 Qb4 14.Qb4=+ (14.Qb4 Bb4 15.Rfd1=+). gtate (1890) – islanderfan, net–chess.com, 2003.

4.d4 e4 5.a3 Nc6 6.c4 Be6 7.cd5 Bd5 8.Nc3 Be7 9.Rc1 Nh6 10.Nh3 Nf7?? 11.Qh5 0-0?? 12.Qd5+– Qc8 13.Qe4 Nd6 14.Qf3 Re8 15.Be2 a5 16.b5 Na7 17.a4 c5 18.dc5 Qc5 19.0-0 Qb4 20.Ba1 Rac8 21.Nd5 Rc1 22.Nb4 Rf1 23.Kf1 ab4 24.Qd5 Kh8 25.Nf4 h6 26.Ng6 Kh7 27.Ne7 Re7 28.Qd6 (28.Qd6 Nc8 29.Bd3 Kg8 30.Qd5 Rf7 31.Qd8 Rf8 32.Bc4 Kh8 33.Qf8 Kh7 34.Bd3 g6 35.Qf7 Kh8 36.Bf6) 1–0. amator111 (1665) – jarehu, internet, 2011.

4.e4 Bb4 5.ed5 Qd5 6.Nc3 Qf7 7.Nd5?? (better is 7.a3 Bc3 8.Bc3–/+) 7...Qd5–+ 8.Nf3 Ne7 9.c3 Bc5 10.Bb5 (10.d4 ed4 11.Nd4 0-0–+) 10...c6 11.Ba4 Bg4 12.Bb3 (12.d3 Bf3 13.gf3 Nd7–+) 12...Qd3 (12...Qe4!? 13.Kf1–+) 13.Bc2 Qb5 14.Bb3 Nd7 15.c4 (15.h3 Bf5 16.d4 ed4 17.Nd4 Bd4 18.Qd4 Nc5–+) 15...Qb6 16.0-0 e4 17.h3 ef3 18.hg4 fg2 19.Kg2 Ng6 (19...Bd4 20.Rb1–+) 20.Qe2 (20.Re1 Be7–+) 20...Kf7 21.Qd3 (21.Kh1 h5! 22.g5–+) 21…Nf4 (21...Nf4 22.Kf3 Nd3–+) 0–1. elektrooon – rakosnik1, internet, 2012.

4.Be5? fe5–+ 5.Qh5 Ke7 6.Qe5 Be6 7.Nf3–/+ Nc6 8.Qb2 h6 9.b5 Nb8 10.Bd3 Nf6 11.Ne5 Ke8 12.Bg6= Ke7 13.Qb4 Qd6–/+ 14.Qf4 Nbd7 (14...Nbd7 15.d4 Kd8–/+) 0–1. commolot (2105) – yetzaline (2150), net–chess.com, 2007.

4.Nf3 Nc6 5.d3? (5.b5 Na5=) 5...Be6 (better is 5...Bb4!? 6.c3 Bd6–/+) 6.a3 Bd6 7.Be2 Qd7 8.0-0 0-0-0 9.c4 Nge7?? (better is 9...dc4 10.dc4 e4=) 10.c5+– e4 11.cd6 Qd6 12.de4 g5 (12...de4 13.Nfd2+–) 13.ed5 (better is 13.Bf6 g4 14.e5 Qd7+–) 13...Bd5 14.Nbd2 h5 15.h3 (better is 15.e4 g4 16.ed5 gf3 17.Bf3 (17.dc6?! Qd2 18.Bf3 Qb2+–) 17...Nd5 18.Qc2+– (worse is 18.Bh5 Kb8+–)) 15...g4 16.Nd4 gh3 17.g3 h4 18.Bg4 Kb8 19.Kh2 hg3 20.fg3 Bg2 (20...Ne5 21.Be2+/– (21.Bh3?? Rh3 22.Kg1 Rg3 23.Kh2 Rg2 24.Kh3 Rh8 25.Qh5 Rh5)) 21.Rg1 (better is 21.Nc6!? Nc6 22.Bf6 Bf1 23.Bd8+/–) 21...Ne5+= 22.Rc1 (22.Be2+=) 22...Ng4 (22...Nd5 23.Nf1 Bf1–+) 23.Qg4+/– f5 24.Nf5?? (better is 24.Qf4+/–) 24...Nf5?? (better is 24...Qd2 25.Bh8 Be4 26.Kh3 Rh8 27.Nh4 Bf5 28.Qf5 Nf5–+) 25.Qf5?? (better is 25.Nc4 Nh6 26.Qg7+=) 25...Qd2–+ 26.Bh8 (26.Bc3 Be4 27.Bd2 Rd2 28.Qf2 Rf2 29.Rg2 Rg2 30.Kh1 h2 31.Rc7 Rg3) 26...Be4 (26...Bf3 27.Kh3 Rh8 28.Qh5 Rh5) 27.Kh3 Bf5 28.g4 Qe3 (28...Rh8 29.Kg3 Qe3 30.Kg2 Be4 31.Kf1 Rf8) 29.Kh4 (29.Rg3 Rh8 30.Kg2 Be4 31.Rf3 Bf3 32.Kf1 Rh1) 29...Rh8 0–1. Fournier,Frederic (2035) – BETIMI (1835), Active, 2005.

4.Nf3 e4 5.Nd4 Bb4 6.c4 c5 (6...Ne7 7.cd5 Nd5 8.a3+=) 7.a3+= cd4 8.ab4 de3 9.de3 Ne7 (9...Be6 10.c5=) 10.Nc3 Be6 11.cd5 Nd5 12.Bc4 (12.Ne4!? 0-0 13.Bc4=) 12...Nc3+= 13.Qd8 Kd8 14.Be6 Ke7 ½–½. Garbacki,Michal – Pilczuk,Andrzej, corr 1AMM Poland, 1991.

4.Nf3 Bg4 5.Be2 Bb4 6.a3 Ba5 7.0-0 h5 (7...Ne7!?–/+) 8.h3= e4 9.Nd4 c5 (better is 9...Be2!? 10.Qe2 Qd7+=) 10.Bg4+= hg4 11.Qg4 cd4? (better is 11...Qd7 12.Ne6 g5+=) 12.Qg7+– Rh4 13.Qg8 Kd7 (13...Ke7 14.Qg7 Ke6 15.Qb7+– (15.Bd4?! Nd7+–; 15.ed4?! Nd7+/–)) 14.Qd5 Ke8 (14...Kc8 15.Qf5 Nd7 16.Bd4+–) 15.Qe6 Qe7 16.Qc8 Bd8 17.Qb7 (better is 17.Bd4 Qd7 18.Qd7 Kd7 19.f3+–) 17...Qb7–+ 18.Bd4 Qg7 19.Kh2 (19.f3 Rh3 20.fe4 Nc6–+) 19...Bc7 20.g3 (20.Kh1 Qg4 21.f4 ef3 22.Rf3 Rh3 23.gh3 Qf3 24.Kg1 Kf7 25.Ra2 Nc6 26.Be5 Be5 27.d4 Rg8) 20...Qh7 (20...Qg4 21.Kg1 Qh3 22.gh4 Qh2) 21.Kg2 (21.Rh1 Rh3 22.Kg2 Rh1 23.Bf6 Qh2) 21...Rh3 22.Rg1 Rh2 23.Kf1 Qh3 (23...Qf5 24.Rg2 Rh1 25.Rg1 Qh3 26.Ke2 Qg4 27.f3 Qf3 28.Ke1 Rg1) 24.Ke1–+ Nc6 (24...Bg3 25.Kd1 Rh1 26.c3 Rg1 27.Kc2–+) 25.Bf6 (25.Nc3 Rh1 26.Ke2 Qg4 27.Kf1 Qf3–+) 25...Bb6 (25...Bg3 26.Kd1 Rh1 27.c4 Rg1 28.Kc2 Qf1 29.Nc3 Qa1 30.d3 Rc1 31.Kb3 Rb8 32.Nb5 Qb1 33.Bb2 Qd3 34.Ka4 Qc4) 26.Nc3 Kf7 27.Bh4 Rh8 28.Ne4 Qg4 29.Nd6 Kf8 30.Rf1 Ne5 31.d3 Nf3 32.Kd1–+ (32.Kd1 Nd4 33.Kc1–+). Fournier,Frederic (1675) – xonny, Active (5/0), 2004.

5.Qa4 Nc6 6.cd5 Bd2?? 7.Nd2+- Qd5 8.Ngf3 Nge7 9.Bc4 Qd6 (9...Qa5 10.Qb3+-) 10.Ba3 (10.Ba3 Qd7 11.Rd1+-) 1-0. aravind555 - jpdmayo1986, lichess.org, 2017.

5.Qa4 Nc6–/+ 6.cd5 Qd5 7.Nc3 Bc3 8.Bc3 Bd7 9.e4 Nd4 10.ed5 (10.Qd4 Qd4 (worse is 10...ed4 11.ed5 dc3 12.dc3=) 11.Bd4 ed4–/+) 10...Ba4 11.Bd4 ed4 12.Nf3 0-0-0 13.Bc4 Re8 (13...Ne7 14.Nd4 Rhe8 15.Kf1 Nd5 16.Re1 Re1 17.Ke1–+) 14.Kf1 b5 (14...Nh6 15.d6 c5 16.Rb1–/+) 15.Bb3 Bb3 16.ab3 Rd8 17.Ra7 Kb8 (17...Rd5 18.Ke2 Rd7 19.Rc1=) 18.Ra5 (better is 18.Nd4!? Ka7 19.Nc6 Kb6 20.Nd8+=) 18...Rd5+= 19.d3 (19.Ke2!? d3 20.Ke3–/+) 19...Ne7–/+. Ruiz Salinas Berreteago,R – Forns Torremorell,J, corr E III CEAPE 2B/, 1991.

5.Qb3 a5 6.cd5 c6 7.Nf3 (better 7.a3 Bd6 8.dc6 Nc6 9.Nc3=) 7...Qd5?? (better 7...cd5 8.a3 Bf8=+) 8.Bc4+- Qd6 9.Bg8 Bg4?? (better 9...Qf8 10.Bc4 a4+-) 10.Qf7 Kd8 11.Qg7 Bf3 (11...Qf8 12.Qh8 Be6 13.Qh7 Qg8 14.Qb7 Qg2 15.Rg1 Qf3 16.Qa8+-) 12.Qh8 Nd7 (12...Bg2 13.Rg1+-) 13.gf3 Kc7 14.a3 Bc5 15.Rg1 Nb6 (15...Qd3 16.Qg7+-) 16.Qh7 Kb8 17.Rg7 Ka7 18.Rb7 Ka6 19.Nc3 Nc4 20.Bc4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Qb3 c5 6.cd5 Be6?? (better is 6...a6+=) 7.de6+– (7.de6 Qc7 8.a3+–) 1–0. DEFFM – Grancanaria, freechess.org, 2017.

5.Qb3 Bc5 6.cd5 Ne7 7.Nc3 0-0?? 8.d6+- Kh8 9.de7 Qe7 10.Nf3 Nc6 11.a3 (11.Rc1 Bd6+-) 11...Na5 (11...e4 12.d4 ef3 13.dc5+-) 12.Qc2 Rd8 13.Be2 c6 (13...Be6 14.Ne4 Bb6 15.0-0+-) 14.0-0 e4? (14...Be6 15.d4! ed4 16.Ne4+- (worse 16.Nd4 Bd4 17.ed4 Nb3+-)) 15.Ne1 (better 15.Ne4 Bb6 16.Bc3+-) 15...Bf5 16.d3 ed3 17.Bd3 Be6 (17...Bd3 18.Nd3 Bd6 19.Rfd1+-) 18.Bh7 Nb3 19.Rb1 (better 19.Rd1 Rd1 20.Nd1 Ba3 21.Ba3 Qa3+-) 19...Bb6? (19...Nd2!? 20.Bd3 Nb1 21.Nb1+- (worse 21.Qb1 Ba3 22.Ne2 Bd6+/-)) 20.Bf5 (20.Nf3 Bc5+-) 20...Bc7? (better 20...Nd2 21.Nf3 Nf1 22.Rf1 Bf5 23.Qf5 Kg8+-) 21.Be6 Qe6 22.Nf3 g5 (22...Nc5+-) 23.Qg6 Rd7 (23...Bh2 24.Nh2 Rd6+-) 24.Nd4! Qe5 (24...Nd4 25.ed4 Combination) 25.g3 Rg7 26.Qh5 Rh7 27.Qg4 Rg8 (27...Nd4 28.ed4 (worse 28.Qd4 Qd4 29.ed4 Re8+-) 28...Qe7 29.Rfd1+-) 28.Nce2 (better 28.Nb3 Rh4 29.Qe2+-) 28...Rh4 29.Qf3 (better 29.Qf5 Nd4 30.Nd4+-) 29...g4?? (29...Nd2 30.Qh1 Nb1 31.Rb1 Qe4+-) 30.Qg2 Rh3 (30...Nd2 31.gh4 Nf1 32.Kf1+-) 31.Nf4 Nd4 (31...Nd2 32.Nh3 Qh5 33.Nf4 Bf4 34.gf4+-) 32.Bd4 Qg5 (32...Qf5 33.e4 Qc8 34.Bf6 Kh7 35.Nh3 gh3 36.Qf3+-) 33.Ne6 (better 33.Nh3 Qf5 34.Rb7 Be5+-) 33...Qg6 34.Nf4 Rg7?? (34...Qg5 35.Nh3 Qf5 36.Rb7 Be5+-) 35.Ng6+- Rg6 36.Bf6! Rf6 37.Qh3! gh3 38.Rfd1 (38.Rb7 Bb6+-) 38...Rf3 (38...b5 39.Rd7 Bb6 40.Rb4+-) 39.Rd4 (better 39.Rb7!? Bb6+-) 39...Bb6 (39...b5 40.Rd7 Bb6 41.Rd6+-) 40.Rh4 (40.Rd7 Rf5+-) 40...Kg7 41.Rh3 Kf6 (41...Rf7 42.Kg2+-) 42.Rh4 1-0. ClayPigeons (2135) - rightnow (2110), Rated Bullet game, lichess.org, 2020.

5.Qb3 Qd6 6.cd5 a6 (6...Ne7 7.a3 Bc5 8.Bc4+=) 7.Nc3= Bc3 (7...Ne7 8.Ne4 Qb6 9.a3=) 8.dc3 Ne7 9.e4 Nd7 10.Nf3 (10.Rb1 f5 11.Ba3 c5=) 10...Nc5 11.Qc2 (11.Qb4 Bg4=) 11...Bd7 (11...c6 12.dc6 Qc6 13.Bd3+=) 12.Be2 (12.Rb1 c6 13.dc6 Qc6=) 12...0-0 (12...c6 13.dc6 Bc6 14.Nd2+=) 13.0-0 Ng6 14.Nd2 (14.Ba3 Nf4=) 14...f5 15.f3 (15.Nc4 Qe7 16.Ba3 b5=) 15...Nf4+= Black gets deadly initiative 16.Rf2 (16.Nc4 Qg6 17.Ne3 fe4–/+) 16...Qg6–/+ 17.Kh1 fe4 18.fe4 Nd5! 19.Rf8 (19.ed5 Exploits the pin 19...Qc2 Theme: Double Attack) 19...Rf8 20.Bc4 Be6 21.Nf3 (21.Rg1 Ne3 22.Be6 Qe6–+) 21...Ne4 (21...Ne3 22.Be6 Ne6 23.Qd2–+) 22.Qe2 (22.Bb3!? Nf4 23.Ne5 Bb3 24.Qb3 Qe6 25.Qe6 Ne6–+) 22...Ndc3 23.Be6 Qe6 24.Qe3 Qc4 25.Rc1? (25.Re1–+) 25...Qe2 (25...Qe2 26.Qe2 Ne2–+) 0–1. Laskowski,Janusz – Gruszczynski,Boleslaw, corr 1AMM Poland, 1991.

5.Qb3 Bd6 6.cd5 Nd7 7.d4 Ne7 8.Nf3 ed4 9.Bd4 Nf5 10.Be2 Nd4 11.Nd4 Nc5 12.Qc2 0-0 13.0-0 Qe7 14.Nd2 Qe5 15.g3 Bh3 (15...Qd5?? 16.Bc4 Qc4 17.Nc4+–) 16.Rfe1 Rfe8 (16...Qd5?? 17.Bc4 Qf7 18.Bf7 Rf7 19.Rad1+–) 17.Bf3 a6 18.Rab1 b5 19.Nc6 Qg5 20.e4 h5 21.Nb3 Nb3 22.ab3 h4 23.b4 Bd7 24.Re2 Kf7 25.Qc3 h3 26.Kf1 Kg8 27.Re3 Kh7 28.Ra1 Kh8 ½–½. Rooijen Van,Peter (1655) – Myatt,John (1680), RC–2009–0-00023, 2009.

5.Qb3 Bd6 6.cd5 Ne7 7.Bb5 Bd7 (7...Nd7 8.d4=+) 8.Nf3 a6 9.Be2 0-0?? (better 9...b5=) 10.Qb7+- (10.Qb7 e4 11.Qa8 ef3 12.Bf3+-) 1-0. DEFFM – GuestCPHH, freechess.org, 2021.

5.Qb3 Be7 6.cd5 Nh6 7.Nf3 a6 8.a4 (8.d4 ed4 9.Nd4 Nd7+/-) 8...Nf7 (8...Nd7 9.Nc3+=) 9.Bc4 (9.Nc3 0-0+/-) 9...Nd6 10.0-0 0-0 11.d4 Nc4 (11...e4 12.Nfd2+/-) 12.Qc4 Bd6 13.de5 fe5 14.Ne5 (14.Be5?! Rf3 15.Bd6 Qd6 16.gf3 Bh3+=) 14...Qe7 (14...Nd7 15.f4+/-) 15.f4+- Kh8 16.Nd2 Bf5 (16...c6 17.Ne4 cd5 18.Qd5 Be5 19.Be5+-) 17.e4 Bg6 (17...Bd7+-) 18.Ng6 hg6 19.Rf3 (better 19.e5 Bc5 20.Kh1+-) 19...Rf4 20.Rh3 (20.Rf4 Bf4 21.Ra3+-) 20...Rh4? (better 20...Kg8+/-) 21.Rh4+- Qh4 22.Nf3 Qf4? (22...Qe7 23.e5 Bc5 24.Kh1+-) 23.Qd4 (better 23.Qc3 Bf8 24.Ne5+-) 23...Bf8 (23...Qf8 24.Qc3 Bb4+-) 24.Ne5 Kh7 (24...c5 25.Qc3 Qe4 26.Qh3 Kg8+-) 25.Rf1 Qf1 (25...b6+-) 26.Kf1 1-0. DEFFM – GuestMWWX, freechess.org, 2021.

6.Qc2 Nc6 7.Nf3 e4 (7...Nge7!?-/+) 8.Bc4=+ Qf5 9.Nh4 Qg4 10.Bg8? (better 10.Bd5 Nge7 11.Qe4=+) 10...Rg8-+ (10...Qh4?! 11.Bd5 Bd7 12.Qe4 Qe4 13.Be4=) 11.Qc4 (better 11.g3-+) 11...Bd2?? (better 11...Qe6 12.Qe6 Be6-+) 12.Nd2+- Be6 13.Qe4 Qe4 14.Ne4 f5? (14...Nb4!? 15.Kd2 Rd8 16.Bd4 Bd5 17.Bf6 gf6 18.Nf6 Kf8+-) 15.Ng5 (15.Nc5 Bc8+-) 15...Ke7 (15...Bd7 16.0-0-0+- (16.Nh7?! Rh8+-)) 16.Nh7 (16.0-0-0 Bd7 17.Nh7 Ke8+-) 16...g5 (16...Nb4 17.0-0+-) 17.Nf3 Bd5 (17...g4 18.Ba3 Kd8 19.Nfg5+-) 18.Nhg5 (18.Nf6 Rgd8 19.Nd5 Rd5 20.Ng5 Nb4+-) 18...Bf3 (18...Nb4 19.Ba3 a5 20.Rc1+-) 19.Nf3 (19.gf3?! Rg5 20.Ke2 Rag8+-) 19...Rg2 20.Rd1 Rh8 (20...Rag8+-) 21.Bh8 (21.Bh8 Rg8 22.Bb2+-) 1-0. aravind555 - aeyre2001, lichess.org, 2018.

6.Nc3 Qc4?? 7.Bc4+- Bc3 8.Bc3 Nc6 (8...Ne7 9.d4 ed4 10.Qd4+-) 9.Nf3 (9.Qh5 g6 10.Qf3 h6+-) 9...Bd7 (9...Nge7 10.d4 Bg4 11.h3 ed4 12.ed4+-) 10.Bg8 (better 10.Qb3 0-0-0+-) 10...0-0-0 (10...Rg8 11.d4 ed4 12.Nd4+-) 11.Bc4 Bf5 12.Rb1! Bb1 13.Qb1 Na5 14.Be6 Rd7 15.Ba5 Kd8 16.Bd7 (better 16.Qb7 Ke7 17.Bd7 Rd8+-) 16...Kd7 17.Qb7 Rb8 18.0-0 (better 18.Qc7 Ke6 19.Qb8+-) 18...Rb7 19.Rc1 Rb2 (19...e4 20.Nd4+-) 20.Bc3 (better 20.Rc7 Ke6 21.Kf1 Ra2 22.Ra7 Kd5+-) 20...Ra2 21.Kf1 Ra1 (21...a6 22.e4 c5 23.Be5 fe5 24.Rc5+-) 22.Re1 (22.Ra1 g5+-) 22...Rc1 (22...Ra3+-) 23.Rc1 c6 24.Ra1 Kd6 25.Ra7 Kd5 26.d3 c5 27.Ra6 g5 (27...f5 28.Ne5 c4 29.e4 Kc5 30.dc4 fe4 31.Rc6) 28.e4 1-0. FeegLood (2855) - iProBowl (1865), lichess.org, 2016.

6.Nc3 Qd7 7.Qb3 Nc6 8.Bb5 Nge7 9.Nf3 (9.a3 Bc3 10.Bc3 a6–/+) 9...a6 10.Bc6 Nc6 11.0-0 g5 (11...Qf7!?–+) 12.Nd5 Bd6?? (better is 12...Qf7–/+) 13.Nf6+– (13.Nf6 Kd8 14.Nd7 Bd7 15.Ng5+–) 1–0. GuestRDMJ – GuestCVTW, freechess.org, 2017.

6.Nf3 Bg4 7.Be2 Ne7 8.Nc3 Bc3 9.Bc3 (9.dc3 Qd1 10.Rd1 Nbc6-/+) 9...0-0 (9...e4 10.Nd4 Be2 11.Ne2-/+) 10.Rb1 (10.Qa4 Bd7 11.Qc4 e4=+) 10...b6 (10...e4 11.Nd4 Be2 12.Ne2-/+) 11.Qa4 Bd7 12.Bc4?? (better 12.Qb3 Qb3 13.Rb3-/+) 12...Ba4-+ 13.Bd5 Nd5 14.Bb4 (14.Ke2 Rd8-+) 14...Nb4 (14...c5!? 15.Bc3-+) 15.Rb4 Bd7 16.0-0 (16.d4 c5 17.dc5 Na6-+) 16...c5 17.Rb2 Nc6 18.Rfb1 (18.d3 Rfd8 19.Rd2 Bg4-+) 18...Nb4 (18...Bf5 19.Rc1-+) 19.a3 (19.d4 Nd3 20.Rd2 c4-+) 19...Nd3 20.Rc2 (20.Ra2 Be6 21.Rc2 Bf5-+) 20...Bf5 21.Ra1 (21.Rc3 Nf2! 22.Rf1 Nd3-+) 21...Nf2! 22.Rb2 (22.Kf2 Bc2) 22...Nd3 23.Rc2 Rfd8 24.h3 Nb4 (24...Rd6 25.Rf1 Be4 26.Rc4-+) 25.Rb2 Nd3 (25...Nd5 26.Rc1-+) 26.Rc2 e4 27.Nh4 Bc8 28.g4 g5 29.Ng2 Ne5 30.Ne1 (30.Kf2 Bd7 31.a4 Rf8-+) 30...Be6 31.Rb2 (31.Kf2 Rd7-+) 31...Nc4 32.Rc2 Rd2 33.Rd2 Nd2 34.Rd1 Nf3 (better 34...Rd8 35.Kf2-+) 35.Nf3 ef3 36.Kf2 Kf7 37.Kf3 Ke7 (37...h5 38.Rg1-+) 38.e4 (38.Rh1 h5-+) 38...Rd8 39.Rd8 Kd8 40.e5 (40.Kf2 b5-+) 40...Ke7 41.Ke4 Bb3 42.Kf5 (42.ef6 Kf6 43.Ke3 Bd5-+) 42...fe5 (42...Bc2) 43.Ke5-+ c4 (better 43...b5!? 44.Ke4 b4 45.ab4 cb4 46.Kd4-+) 44.Kf5 (44.Kd4-+) 44…c3 (44...c3 45.h4 gh4-+) 0-1. aravind555 (1800) - User8976 (1720), lichess.org, 2020.

7.Bc3 Ne7 8.Qa4 Bd7 9.Qc2 Bf5 10.Qa4 Nd7 11.Nf3 Nc6 12.Bc4 Qd6 13.0-0 (better is 13.Qb5!?–/+) 13...Nb6–+ 14.Qb3 Nc4 15.Qc4 Bd3 16.Qg4 Bf1 17.Rf1 (17.Qg7 Qf8 18.Qf8 Rf8 19.Kf1 e4–+) 17...Qd7 18.Qc4 0-0-0 19.Rb1 Qd5 20.Qa4 a6 21.e4 Qd3 22.Qb3 b6 23.Rc1 (23.Qe6 Kb7 24.Re1 Qd7–+) 23...Qe4 24.Qe6 Kb7 25.d4 (25.h3 Rhe8 26.Qb3 Qd5–+) 25...Qd5 (25...Rhe8 26.Qc4–+) 26.Qg4 (26.Qd5 Rd5 27.de5 fe5–+) 26...e4 (better is 26...ed4!? 27.Rd1–+) 27.Nd2 Nd4 28.Bd4 Qd4 29.Nb3 (29.Qg7 Qe5 (29...Qd2?? 30.Rc7 Kb8 31.Rb7 Ka8 32.Ra7 Kb8 33.Qc7) 30.Nf1 h5–+) 29...f5 (29...h5 30.Qe2 Qd3 31.Kf1–+) 30.Qe2 (30.Nd4 fg4 31.Nb3 a5–+) 30...Qd3 31.Qe1 Rd5 32.h3 e3! 33.fe3 Re8 34.Rc3 Qd1 35.Qd1 Rd1 36.Kf2 c5 37.Ke2 Rd5 38.Kf3 Kc6 39.g4 (39.Nd4 Kd6 40.Ne2 Rd2–+) 39...g6 40.gf5 gf5 (40...Rf5 41.Kg4 Rf1 42.Kg3–+) 41.Kf4 (41.Nd4 Kd6 42.Ne2 Rd2–+) 41...Kd6 42.Rc2 h6 43.Nd2 b5 44.e4 (44.Nf1 Re4 45.Kf3 c4–+) 44...fe4 45.Ne4 Kc6 46.Rg2 (46.Nf2 c4–+) 46...Re6 (better is 46...Rd4 47.Rg6 Kb7 48.Rg7 Kc8 49.Kf5 Rde4 50.Rg3–+) 47.Nc3 Rh5 48.Rg3 (48.Rh2 Rh4 49.Kf3 Rd6–+) 48...b4 49.Nd1 c4 50.Ne3 (50.Rg8 Rh3 51.Rb8 c3–+) 50...Kc5 51.Rg8 (51.Rg2 Rh3 52.Nc2 b3–+) 51...Rh4 52.Ng4 Rh3 53.Rc8 (53.Ne5 c3 54.Rd8 c2 55.Rc8 Kd5 56.Rc2 Re5–+) 53...Rc6 54.Re8 c3 55.Re5 (55.Ne3 Kb6 56.Rb8 Kc7–+) 55...Kd4 (55...Kd6 56.Re1 Rc4 57.Kf5 Rf3 58.Kg6 Rg4 59.Kh5 Rg2 60.Rd1 Ke6 61.Kh4 c2 62.Rd8 c1Q 63.Re8 Kd7 64.Rd8 Kd8 65.Kh5 Rh3) 56.Re4 Kc5 57.Re5 Kb6 (57...Kd6 58.Nf6 Rc4 59.Re4 Rh4 60.Ke3 Rce4 61.Ne4 Re4 62.Ke4–+) 58.Re1 c2 59.Rc1 Rd3 60.Ne3 Rd2 61.Ke4 Rc5 62.Kf3 (62.Nc2 Rcc2 63.Rh1 Rh2–+) 62...a5 (62...Rc3 63.Kf4 Rf2 64.Ke4–+) 63.Ke4 a4 64.Kf3 b3 65.ab3 ab3 66.Rc2 Rdc2 67.Nc2 (67.Ke4 b2 68.Kf4 b1Q 69.Kf3 Rd2 70.Nd5 Rcd5 71.Kf4 Qb3 72.Kg4 R2d4) 67...bc2 68.Ke4 (68.Ke3 c1Q 69.Kd4 Qc3 70.Ke4 Re5 71.Kf4 Qe3 72.Kg4 Rg5 73.Kh4 Qg3) 68...c1Q 69.Kf3 (69.Kd4 Qc3 70.Ke4 Re5 71.Kf4 Qe3 72.Kg4 Rg5 73.Kh4 Qg3) 69...Re5 70.Kg4 (70.Kg2 Re3 71.Kf2 Qd2 72.Kg1 Re1) 70...Qf1 71.Kg3 Rg5 72.Kh2 (72.Kh4 Qh1) 72...Qg2 0–1. Glowacki,Andrzej – Poplawski,Maciej, Suwalki Poland, Open, 2012.

7.Bc3 Ne7 8.d4!? ed4 9.Qd4 Qd4 10.Bd4–/+.

7.Bc3 Ne7 8.Be2 Qg2–+ 9.Bh5 g6 (9...Kd8 10.Bf3 Qg6 11.d3–+) 10.Bf3–/+ Qg5 11.Qb3 (11.d4 Qf5–/+) 11...Nbc6–+ 12.0-0-0 (better is 12.d4–+) 12...Na5?? (better is 12...Qf5–+) 13.Qa4= (worse is 13.Ba5 e4 14.Qa4 Bd7 15.Qe4 Qa5 16.Qb7 Rd8–/+) 13...Nac6 14.Bc6?? (14.Qb3 Qf5 15.Qc2–+) 14...Nc6–+ (14...bc6?! 15.Ne2–+) 15.Nf3 (15.Ne2 Qg4 16.Qg4 Bg4–+) 15...Qg2 (15...Qg4!? 16.Qg4 Bg4 17.Nh4 Bd1 18.Rd1–+) 16.Ne5 (16.Nh4 Qd5–+) 16...fe5 17.Be5 Rf8 18.Bg3 Bd7 19.Qe4 (19.d3–+) 19...Qe4 (19...Qe4 20.d3 Qb4–+) 0–1. GuestSKYR – GuestMTKW, freechess.org, 2017.

7.Bc3 Ne7 8.Nf3 0-0 9.h3 Nbc6 10.d4 e4 11.Nd2= Be6 12.Bc4 Qd7–/+ 13.Qb3 Bc4 14.Qc4 Kh8 15.0-0 f5–/+ 16.Nb3 b6 17.Rad1 Nd5 18.f3?? Ne3–+ 19.Qd3 ed3 0–1. gtate (1780) – mugley (1730), net–chess.com, 2002.

7.Bc3 Ne7 8.Nf3 c5 9.Be2 (9.d4 ed4 10.ed4 c4-/+) 9...b6 (9...Nbc6 10.d3-/+) 10.0-0 Bb7 11.Qa4 (11.d4 cd4 12.ed4 ed4 13.Qd4 Qd4 14.Nd4 Bd5=+) 11...Bc6 12.Bb5 (12.Qc2 e4 13.Ne1 c4=+) 12...0-0 (12...c4 13.Rfb1 Bb5 14.Rb5-/+) 13.Rab1 Bb7?? (13...Bb5 14.Rb5 Nd7 15.e4-/+) 14.d3 (better 14.Bc4+-) 14...Kh8 15.e4 Qd6 16.Nh4 (16.Bc4!?-/+) 16...a6-+ 17.Bc4 b5 18.Qd1 b4 (better 18...Nbc6!?-+) 19.Bd2-/+ a5 20.f4 Nd7 21.f5? (21.Be3!?-/+) 21...Nb6 (better 21...Be4 22.Be3 Bd5-+) 22.Rf3?? (better 22.Be3-+) 22...Nc4 23.dc4 Qd4 (23...Be4 24.Be3 Qc6 25.Rh3 Bb1 26.Qb1-+) 24.Be3 Qe4 25.Qd7 (25.Bf2 Qc4 26.Rh3 Qa2 27.Ra1-+) 25...Ng8 (25...Qb1 26.Rf1 Qe4 27.Bc5-+) 26.Rg3?? (26.Rd1 Rfe8 27.Ng6 hg6 28.Qf7-+) 26...Qb1 27.Kf2 Threatening mate... how? 27...Qc2 (27...Qb2 28.Ke1 Qa1 29.Kf2 Qa2 30.Kg1 Qb1 31.Kf2 Qb2 32.Kg1 Qa1 33.Kf2-/+) 28.Ke1 Qc3 (28...Ne7 29.Qe7 Qb1 30.Kf2 Qa2 31.Kg1 Qb1 32.Kf2 Qc2 33.Ke1 Qc3 34.Kf2 Qb2 35.Ke1 Qa1 36.Kf2=) 29.Bd2 Qg3 30.hg3 Ba6 31.Qd3 Rfd8 (better 31...Rad8 32.Qb3 Rd4-+) 32.Qf3 (32.Qe2 Rd4 33.Qh5 Re4 34.Kd1 h6-+) 32...Ra7 (better 32...Bc4!? 33.Be3-+) 33.Qg4 (33.Be3 Rd3 34.Qe4 Rad7-+) 33...Rad7 34.Qh5 (34.Be3 Rd1 35.Kf2 Nh6 36.Bh6 gh6-+) 34...Ne7 35.Ng6 (35.Be3 Bc4 36.Bc5 Nd5 37.Ng6 Kg8-+) 35...Ng6 36.fg6 (36.fg6 h6 37.Bh6 gh6 38.Qh6 Kg8 39.Qh4-+). aravind555 - anatolij171 (1640), lichess.org, 2018.

5.Bc4 Bb4 6.Qb3 Bd2 7.Nd2 Ne7 8.Ngf3 (8.Rd1 Bf5+–) 8...a6 (8...Nbc6 9.Rd1 Kf8 10.Bc3+–) 9.0-0 (9.Rd1 Bf5 10.Nh4 Nbc6 11.Nf5 Nf5+–) 9...b5 (9...Nbc6 10.Rfd1 Kf8 11.Ba3+–) 10.Bf7 Kf8 11.Ne4 c6 (11...Bf5 12.Rad1 Qc8+–) 12.Rad1 Qc7 (12...Bd7 13.Ba3 b4 14.Bb4+–) 13.Ba3 (13.Ba3 Bd7 14.Nh4+–) 1–0. GuestLCSK – GuestSKSC, freechess.org, 2018.

5.Bc4 Bb4 6.Bg8 Rg8 7.Qb3 Rf8 8.Qb4 Nc6 9.Qc4 Qd6? (better 9...Qd7+-) 10.Ba3 Qe6 11.Qe6 Be6 12.Bf8 Kf8 13.a3 Na5 14.Nc3 Rd8 15.Nge2 Nb3 (15...c5 16.f4+-) 16.Rd1 c6 (16...Rd3 17.f4+-) 17.d4 Kf7 18.de5 Rd1 19.Kd1 fe5 20.f4 Kf6 (20...Na5 21.fe5 Nc4 22.Nd4+-) 21.Ne4 Kf5 (21...Ke7 22.fe5 Na5 23.Nd6+-) 22.N2g3 Kg4 (22...Kg6+-) 23.fe5 h5 (23...Bc4+-) 24.h3 Kh4 25.Nf5! Bf5 26.g3 A classical mating theme 1-0. GuestFKFW – GuestVZYN, freechess.org, 2020.

5.Bc4 Bb4 6.Bg8 Rg8 7.Qh5?? Kf8 8.Qh7=+ Nc6 9.Nf3 Be6 10.0-0 Qe7 (10...g5 11.a3 Bd6 12.d4=+) 11.Rc1 (11.d4 g5 12.Qe7 Ke7 13.de5 f5=) 11...Ke8 (11...g6 12.Qh6 Qg7 13.Qg7 Rg7 14.d4=+) 12.Nc3 (12.d4 Bd6=) 12...Kd7 (12...g5!? 13.Ne4 g4 (worse 13...Qh7 14.Nf6 Ke7 15.Nh7+-) 14.Qh5 Bf7=+) 13.a3 Bd6 14.Nb5 (14.d4 Rh8 15.Qd3 ed4 16.ed4=) 14...Bc5 (better 14...g6!? 15.Qh6 Rad8=+) 15.d4+= ed4 16.ed4 (16.Nfd4 Rh8 17.Qe4 Bd4 18.Nd4 Nd4 19.Bd4 Qd6+-) 16...Bb6= 17.a4 (17.d5 Bd5 18.Rd1 Qe6+-) 17...a6 (17...Rh8 18.Qd3 Bd5=) 18.a5?? (18.d5 Bd5 19.Rd1 Qe6+-) 18...ab5 (better 18...Na5 19.d5 Bd5=+ (19...ab5 20.de6 Qe6 21.Re1+-)) 19.ab6+= Rh8 20.Qd3 Qd6 (20...Bc4 21.Qc3+=) 21.bc7+- Qc7?? (better 21...Ra1 22.Ra1 Kc7 23.Qb5 Qb4+-) 22.d5 (better 22.Ra8 Ra8 23.d5 (23.Qb5?! Ra5 24.Qe2 Bd5+-) 23...Bd5 24.Qd5 Qd6 25.Qf5 Kd8 26.Qh7+-) 22...Nb4 (22...Ra1 23.Ra1 Bd5 24.Qd5 Qd6 25.Qb5 Kc7+-) 23.de6 Ke6 (23...Ke7 24.Rc7 Ke6 25.Qd7) 24.Qe4 (24.Ng5 fg5 25.Re1 Qe5 26.Re5 Kf7 27.Qf5 Kg8 28.Ra8) 24...Qe5 25.Be5 (25.Ng5 Ke7 26.Qb7 Kd6 27.Qc7 Kd5 28.Rc5) 25...fe5 (25...Nc6 26.Bf4 Kf7 27.Ng5 fg5 28.Qf5 Ke7 29.Re1 Ne5 30.Qe5 Kf7 31.Qe6 Kf8 32.Ra8) 26.Qe5 Kf7 27.Qf4 (27.Rc7 Kg6 28.Rg7 Kh6 29.Qg5) 27...Kg6 (27...Ke7 28.Rc7 Ke8 29.Ra8) 28.Qb4 (28.Ne5 Kh5 29.Qf5 Kh6 30.Qg6) 28...Raf8 29.Qb5 (29.Qg4 Kh6 30.Qg5 Kh7 31.Rc7 Rf7 32.Qh5 Kg8 33.Qf7 Kh7 34.Qg7) 29...Rf7 30.Qg5 Kh7 31.Qh5 Kg8 32.Rc8 Rf8 33.Rf8 Kf8 34.Qh8 (34.Qc5 Kf7 35.Qd5 Kf6 36.Qd6 Kf5 37.Ra5 b5 38.Rb5 Ke4 39.Nd2) 34...Kf7 35.Qg7 (35.Re1 b5 36.Qe8 Kf6 37.Qe6) 35...Kg7+- 36.Rb1 b5 37.Rb5 Kf6 38.Re5 Kg6 39.Rg5 (39.Re6 Kh7 40.h4 Kg8 41.Ng5 Kg7 42.h5 Kg8 43.h6 Kf8 44.g4 Kg8 45.Re8) 39...Kf6+- 40.h4 Kf7 41.h5 Kf8 (41...Ke7 42.h6 Kd6 43.h7 Kc7 44.Rg6 Kd7 45.h8Q Ke7 46.Qh7 Ke8 47.Rg8) 42.h6 Kf7 43.h7 Kf8 (43...Ke7 44.Re5 Kf7 45.h8Q Kg6 46.Re6 Kf5 47.Qf6 Kg4 48.Qg5) 44.g4 (44.h8Q Kf7 45.Qg7 Ke6 46.Nd4 Kd6 47.Nb5 Ke6 48.Re5) 44...Ke7 45.Kg2 (45.h8Q Kd7 46.Qg7 Kc6 47.Qf6 Kd7 48.Rg7 Ke8 49.Qe7) 45...Kf6 (45...Kd7 46.Rg6 Ke7 47.h8Q Kd7 48.Qh7 Ke8 49.Rg8) 46.Kg3 (46.h8Q Kf7 47.Qg7 Ke8 48.Rb5 Kd8 49.Rb8) 46...Ke6 47.Kf4 (47.h8Q Kf7 48.Qg7 Ke8 49.Rb5 Kd8 50.Rb8) 47...Kd6 (47...Ke7 48.h8Q Kd7 49.Rg6 Ke7 50.Qh7 Kf8 51.Rg8) 48.h8B (48.h8Q Ke7 49.Rg6 Kd7 50.Qh7 Ke8 51.Rg8) 48...Kc6 49.Kf5 (49.Rg6 Kc7+-) 49...Kd6 50.Rg6 Ke7 (50...Kc5 51.Bd4 Kc4 52.Ne5 Kb3 53.Rb6 Ka2 54.Bc3 Ka3 55.Nc4 Ka2 56.Nd2 Ka3 57.Ra6) 51.Rf6 (51.Rc6 Kf8 52.Kf6 Ke8 53.Rd6 Kf8 54.Rd8) 51...Kd7 52.g5 Ke7 53.g6 (53.Rc6 Kf8 54.g6 Ke8 55.Ke6 Kd8 56.Bf6 Ke8 57.Rc8) 53...Kd7 54.g7 Ke7 55.g8N (55.g8Q Kd7 56.Qg7 Ke8 57.Rf8) 55...Kd7 56.Ng5 (56.Ne5 Kc7 57.Rc6 Kb8 58.Nd7 Ka7 59.Rb6 Ka8 60.Bd4 Ka7 61.f4 Ka8 62.Rb8) 56...Kc7 57.f4 Kd7 (57...Kc8 58.Ne6 Kb7 59.Nc5 Kc8 60.Rc6 Kd8 61.Bf6 Ke8 62.Rc8 Kf7 63.Nh6) 58.Re6 Kc7 (58...Kc8 59.Be5 Kb7 60.Ne4 Kc8 61.Nc5 Kd8 62.Nf6 Kc8 63.Re8) 59.Kg6 (59.Be5 Kb7 60.Ne4 Kc8 61.Nc5 Kd8 62.Nf6 Kc8 63.Re8) 59...Kd7 60.f5 Kc7 (60...Kd8 61.Ne7 Kc7 62.Be5 Kd8 63.Kf7 Kd7 64.Bb8 Kd8 65.Rd6) 61.f6 (61.Be5 Kc8 62.f6 Kd8 63.f7 Kd7 64.Nf6 Kc8 65.f8Q Kb7 66.Qb8) 61...Kd7 (61...Kb7 62.f7 Kc7 63.Be5 Kd7 64.Nf6 Kc8 65.f8Q Kb7 66.Qb8) 62.f7 Kc7 63.f8B (63.Be5 Kd7 64.Nf6 Kc8 65.f8Q Kb7 66.Qb8) 63...Kd7 (63...Kb7 64.Ne4 Kc7 65.Be5 Kd7 66.Nc5 Kd8 67.Be7 Kc8 68.Rc6) 64.Nh6 (64.Be5 Kc8 65.Rb6 Kd8 66.Nf6 Kc8 67.Rb8) 64...Kc7 65.Be5 Kd7 66.Nf5 (66.Rd6 Kc7 67.Ne6 Kb7 68.Nc5 Kc8 69.Rb6 Kd8 70.Rb8) 66...Kc8 67.Rd6 (67.Nd6 Kc7 68.Nde4 Kc8 69.Nc5 Kd8 70.Nf7 Kc8 71.Re8) 67...Kb7 (67...Kc7 68.Ne6 Kb7 69.Nc5 Kc8 70.Rb6 Kd8 71.Rb8) 68.Ne7 (68.Ne4 Kc8 69.Ne7 Kb7 70.Nc5 Kc7 71.Rc6 Kd8 72.Rc8) 68...Kc7 69.Nd5 (69.Ne6 Kb7 70.Nc5 Kc7 71.Rc6 Kd8 72.Rc8) 69...Kb7 70.Ne6 (70.Rb6 Ka8 71.Bc5 Ka7 72.Bb8 Ka8 73.Nc7) 70...Kc8 71.Rc6 (71.Nd8 Kb8 72.Rd7 Kc8 73.Nb6) 71...Kd7 72.Kf5 (72.Rb6 Kc8 73.Nc5 Kd8 74.Rb8) 72...Kc6+- 73.Ne7 Kd7 74.Nc5 Ke8 (74...Kd8 75.Nd5 Ke8 76.Kg6 Kf8 77.Bd6 Ke8 78.Bc7 Kf8 79.Nd7 Ke8 80.N7f6 Kf8 81.Bd6) 75.Ng6 (75.Kg6 Kf8 76.Nc6 Ke8 77.Bc3 Kf8 78.Nd7 Ke8 79.Nf6 Kf8 80.Bb4) 75...Kd8 (75...Kf7 76.Bf6 Ke8 77.B6e7 Kf7 78.Ne4 Ke8 79.Nf6 Kf7 80.Ne5) 76.Ke6 Ke8 77.Bed6 (77.Bfd6 Kd8 78.Kf7 Kc8 79.Ne7 Kd8 80.Bc7) 77...Kd8 78.Bde7 (78.Ne5 Ke8 79.Ned7 Kd8 80.Bfe7 Ke8 81.Nf6) 78...Ke8 79.Kd6 (79.Kf5 Kf7 80.Ne4 Ke8 81.Nf6 Kf7 82.Ne5) 79...Kf7 80.Ne5 Kg8 (80...Ke8 81.Nc4 Kf7 82.Ne4 Kg6 83.Ne5 Kf5 84.Kd5 Kf4 85.Bh6 Kf5 86.Nd6) 81.Bh6 (81.Ne4 Kh8 82.Bf6 Kh7 83.B6g7 Kg8 84.Nf6) 81...Kh7 82.Bhg5 (82.Beg5 Kg8 83.Ne4 Kh8 84.Bf6 Kh7 85.Bfg7 Kg8 86.Nf6) 82...Kg8 (82...Kg7 83.Ncd7 Kh8 84.Nf6 Kg7 85.Bf8 Kf8 86.Bh6) 83.Ne6 Kh7 84.Nf8 Kg7 (84...Kg8 85.Nfd7 Kg7 86.Bf8 Kh8 87.Bf6 Kh7 88.B6g7 Kg8 89.Nf6) ½-½. aravind555 - aslanb8 (1605), lichess.org, 2019.

5.Bc4 Bb4 6.Bg8 Rg8 7.Qh5?? Kf8 8.Qh7=+ Qd2?? 9.Nd2+- (9.Nd2 Be6 10.Ngf3+-) 1-0. aravind555 – varuncn, lichess.org, 2017.

5.Bc4 Bb4 6.Bg8 Rg8 7.Qh5?? g6!? 8.Qh7 Be6-/+.

5.Bc4 c6 6.Bg8 Rg8 7.Qh5 Ke7 (7...g6!? 8.Qh7 Qd5=+) 8.Qh7+= Be6 9.Ba3 (better 9.d4 Ke8 10.a3 ed4 11.Bd4+=) 9...Na6?? (better 9...Ke8=) 10.b5+- Kf7 11.ba6 ba6 (11...Ba3 12.Na3 b6 13.Nf3+-) 12.Bf8 Rf8 13.Nf3 Qd7 14.0-0 (14.Nc3 Bf5 15.Qh4 Bd3+-) 14...Bf5 15.Qh4 e4 (15...Bd3 16.Rc1+-) 16.Nd4 c5 17.Nf5 Qf5 18.Nc3 Rh8 (18...Rfe8 19.f3 Rh8 20.Qe4 Qe4 21.Ne4+-) 19.Qe4 Qh5 (19...Qe4 20.Ne4 Rad8 21.Rfd1+-) 20.Qd5 (20.Qc4 Ke8 21.Qe6 Kf8 22.Qd6 Kg8+-) 20...Kg6 (20...Qd5 21.Nd5 c4 22.e4+-) 21.Qh5 (21.Qd3 Qf5 22.Qa6 Rhd8+-) 21...Rh5 22.f4 (22.d4 c4+-) 22...Rah8 23.h3 Kf7 (23...Rd8 24.Rf2+-) 24.Rab1 Kg6 25.Rb7 Rf5 (25...Rd8 26.Rd1+-) 26.Ra7 (better 26.g4!? Rf4 27.Rf4 Rh7+-) 26...Rd8 (26...Rfh5 27.Rf3 Rg8 28.Ne4+-) 27.Rd1 (27.g4 Rfd5 28.Nd5 Rd5+-) 27...Kh7 (27...c4 28.Ra6 Rc5 29.e4+-) 28.Ra6 (better 28.g4 Rfd5 29.Nd5 Rd5 30.Ra6 Rd3+-) 28...g5 (28...Rh5 29.Rc6+-) 29.Ne4 (better 29.g4 Rfd5 30.Nd5 Rd5 31.Rf6 gf4 32.Rf4 Rd6+-) 29...gf4 30.Nf6 (30.ef4 Rf4 31.Nc5 Rc4+-) 30...Kg7 31.Ng4 fe3 32.Ne3 Re5 33.Kf2 Rf8 34.Ke2 c4 (34...Rf4 35.g4+-) 35.Rf1 (35.Rc1 Rfe8+-) 35...Rc8 (35...Rf1 36.Kf1 c3 37.Ke2 cd2 38.Kd2+-) 36.Rc1 c3 (36...Kf7 37.Ra4+-) 37.Rc3 Rc3 38.dc3 Rb5 39.c4 Rb2 40.Kf3 Rd2 41.Ke4 Re2 42.c5 Kf7 43.c6 Ke7 44.h4 (44.Kd3 Re3 45.Ke3 Kd6+-) 44...Kd8 45.h5 Re3 46.Ke3 (46.Ke3 Kc8 47.h6 Kc7 48.h7 Kd6 49.h8Q Kd5 50.c7 Kc4 51.c8Q Kd5 52.Qd4) 1-0. aravind555 (1605) – viwi, lichess.org, 2020.

5.Bc4 Nc6 6.a3 a6 7.Qb3 Nh6 8.Nf3 Bd6 9.d4 e4 10.Nfd2 f5 11.d5 Ne5 12.Be5 (12.0-0 0-0=) 12...Be5=+ 13.Nc3 Qf6 14.0-0-0?? (better 14.Rc1=) 14...Bd7 (better 14...Bc3 15.f3 ef3 16.gf3 Bd7-+) 15.Ndb1 (15.Na2-/+) 15...0-0-0 (better 15...Ng4 16.Rd2 Nh2-+) 16.Na4? (better 16.h3-/+) 16...Ng4 (16...b5 17.Nac3 Ng4 18.Rd2 bc4 19.Qc4-+) 17.Rhf1 (17.b5 ab5 18.Bb5 Bb5 19.Qb5 Nf2 20.Nc5-+) 17...g5 Black plans f4 (better 17...b5 18.Nb2 Nh2 19.Rh1-+) 18.h3 (18.b5 ab5 19.Bb5 Nh2 20.Bd7 Kd7 21.Nc5 Ke7 22.Nb7 Nf1 23.Nd8 Rd8 24.Rf1-/+) 18...Nh6 (18...Nh2 19.Rh1 b5 20.Nb2 bc4 21.Nc4-+) 19.Rfe1? (19.Nc5 Kb8=+) 19...f4?? (19...b5!? 20.Nc5 bc4 21.Qc4-+) 20.ef4? (20.Nc5!? Bf5 21.Nd2 fe3 22.Nde4= (22.Qe3? Bb2 23.Kc2 Bd4-+)) 20...Qf4 (better 20...Bf4 21.Kc2 Bf5-+) 21.Kc2? (better 21.Nd2 b5 22.Nc5 bc4 23.Qc4=+) 21...Bf5 (21...Nf5!? 22.Nc5 Qf2 23.Re2 Nd4 24.Rd4 Qd4 25.Qc3-+) 22.Re3 Qf2 23.Re2 e3 (23...e3 24.Kc1 Qf4-/+) 0-1. ClayPigeons (2080) - slow91 (2065), Rated Bullet game, lichess.org, 2021.

5.Bc4 Ne7 6.Qb3 a6?? 7.Bf7 Kd7 8.Qe6 1-0. GuestLYRF – GuestTZMB, freechess.org, 2020.

5.Qb3 Be6 6.Nf3 Nd7 7.d4 e4 8.Nfd2 f5 9.Nc3 Ngf6 10.Be2 a5 11.b5 c5 12.cd5 a4 13.Na4 Nd5 14.Bc4 Ra4 15.Bd5 Rb4 16.Be6 Rb3 17.Bb3 Qg5 18.g3 cd4 19.Bd4 Bb4 20.a3 Bd2 21.Kd2 f4 22.a4 fe3 23.Be3 Qd8 24.Ke2 Nc5 25.Rhd1 Nd3 26.Bc4 Qf6 27.Bd3 Qb2 28.Bc2 Qc2 29.Kf1 0-0 30.Kg1 h5 31.h4 Rf7 32.a5 1–0. Feilmayr – A de Visser, corr SOK–87–07.

5.b5 c5 6.cd5 Qd5 7.Nc3 Qd8 8.Bc4 (8.Nf3 Be6+-) 8...Nd7+- 9.Qb3 (9.Qh5 g6 10.Qe2 Nb6+-) 9...Nh6 10.Nf3 Nb6 11.0-0 Nc4 12.Qc4 b6? (better 12...Nf5+-) 13.d4+- ed4? (13...Bf5 14.de5 Qd7+-) 14.ed4 cd4 (14...Bb7 15.Rfe1 Be7 16.dc5 Bf3 17.gf3 Kf8+-) 15.Rfe1 Be7 16.Ba3 Nf5 (16...Ng8 17.Nd5 Bd7 18.Ne7 Ne7 19.Qd5+-) 17.Nd4! Nd6 (17...Qd4 18.Qc6 Double attack; 17...Nd4 18.Re4 Double attack (18.Be7 Deflection; 18.Re4 Decoy; 18.Be7 Overloading)) 18.Qc6 Bd7 19.Qd6 (19.Qd6 0-0 20.Qd5 Be6 21.Qe6 Kh8 22.Nc6 Ba3 23.Nd8 Rad8 24.Rad1+-) 1-0. GuestVVGT – GuestSMZD, freechess.org, 2020.

5.b5 c5 6.cd5 Qd5 7.Nc3 Qe6 8.Qa4 (better 8.Rc1=) 8...b6?? (better 8...Bd6=) 9.Qe4+- Bd6 (9...Nc6 10.Bc4 (10.Qc6?! Qc6 11.bc6 Ne7+-) 10...Qd6 11.Qc6 Qc6 12.bc6+-) 10.Qa8 Qd7 11.Ne4 Bb7 (11...Nh6+-) 12.Qb7! Qb7 (12...Ne7 13.Bc4+-) 13.Nd6 (13.Nd6 Kd8 14.Nb7 Kc7 15.Nc5 bc5 16.Rc1+-) 1-0. GuestGYLW – heahea, freechess.org, 2019.

5.b5 Be6 6.cd5 cd5 7.d4=.

5.Qb3 d4 6.ed4= ed4 7.Nf3 Nc6 (7...Qe7 8.Be2 Nc6 9.Nd4 Nd4 10.Bd4 Qb4 11.Qe3+=) 8.a3 (8.b5 Qe7 9.Ba3 Nb4 10.Bb4 Qb4 11.Qb4 Bb4 12.Nd4 Bd7+=) 8...Ne5 (better 8...Nh6!?=) 9.Nd4+/- Bd7 (9...Bf7 10.Be2+/-) 10.Be2 Nh6 (10...Qe7 11.0-0+/-) 11.0-0+- Be7 12.c5 a5 13.Ne6 Be6 14.Qe6 Qd7 15.Qd7 Kd7 16.d4 Nc6 (16...Ng6 17.b5+-) 17.Bb5 Kd8 18.d5 Na7 19.Bc4 b5 (19...Kd7 20.Re1+-) 20.cb6 (20.Bd3!? Nf7+-) 20...cb6 21.ba5 b5 (better 21...ba5 22.Nd2 Bd6+-) 22.Bd3 Nc8 (22...Nf7 23.Bd4+-) 23.Bb5 Ra5 24.a4 Bb4 25.Bc3 Bc3 26.Nc3 Nd6 27.Rfe1 Nhf5 28.g3 (28.Bc6 h5+-) 28...Nd4 29.Reb1 (better 29.Red1!? Nc2 30.Ra2 Nb5 31.Nb5 Nb4+-) 29...Ke7 30.Bc6 (30.Bd3 Rc5 31.Ra3 Rhc8+-) 30...Rc5 (30...Nc6 31.dc6 Rc8 32.Rb5 Nb5 33.Re1 Kd6 34.ab5+/-) 31.Nb5 Nc6 32.dc6 Rc6 33.Nd6 Kd6 34.Rb7 g6 35.Rd1 Ke6 36.Ra7 Rc2 (36...g5 37.a5+/-) 37.Rdd7 Ra2 38.Rdb7 Kf5 39.Rb6 Re8 40.Raa6 Rf8 41.Kg2 g5 42.Ra5 Kg6 43.Ra7 (43.h3 h5+-) 43...g4 44.Rbb7 Re8 (44...Rg8 45.Rb4 h5 46.Rf4+/-) 45.Rb4 (45.Rg7 Kf5 46.Ra5 Re5 47.Rh7 Kg6 48.Re5 fe5+-) 45...h5+/- 46.Ra6 (better 46.Rf4!?+/-) 46...Re1= 47.Rf4 Raa1 48.Raf6 Kg7 49.Rf7 ½-½. Mely (2290) - Gavrosh (2385), ChessWorld.net, 2016.

5.cd5+= Bd5 6.a3 a5 7.b5+=.

5.cd5 Bd5 6.a3 Nc6 7.Nf3 Nge7 8.Be2 Nf5 9.Nc3 Be6 10.0-0 Bd6 11.Rc1 0-0 12.Ne4 Bd5 13.Nd6 Qd6 14.d4 Bf3 (better is 14...a6=) 15.Bf3+– ed4 16.Bc6 bc6 17.ed4 Rad8 18.Qf3 Nd4 19.Bd4 Qd4 20.Qc6 Qb6 21.Qc7 Qc7 22.Rc7 a6 23.Ra7 Rd6 24.f3 Rf7 25.Ra8 Rf8 26.Ra7 Rf7 27.Rf7 Kf7 28.Ra1 Ke6 29.a4 Kd5 30.Rd1 Kc6 31.Rd6 (31.Rc1!? Kb6 32.Re1+/–) 31...Kd6= 32.Kf2 Kd5 33.Ke3 Kc4 34.b5 ab5 35.ab5 Kb5 36.Kd4 Kc6 37.g4 Kd6 38.f4 Ke6 39.h4 g6 40.Ke4 h6 41.h5 gh5 42.gh5 f5 43.Kd4 Kf6?? (better is 43...Kd6 44.Kc4 Kc6=) 44.Kd5+– Kg7 (44...Kf7 45.Ke5 Ke7 46.Kf5 Kf7+–) 45.Ke5 Kf7 46.Kf5 Kg7 47.Ke6 Kg8 48.Ke7 Kg7 49.f5 Kh7 50.f6 Kg8 51.f7 Kh7 (51...Kg7 52.f8Q Kh7 53.Qc8 Kg7 54.Qg4 Kh8 55.Kf6 Kh7 56.Qg7) 52.Kf6 Kh8 53.f8Q Kh7 54.Qg7 1–0. Fournier,Frederic (1765) – davds7 (1930), Active (5/0), 2005.

5.cd5 Bd5 6.a3 Bf7 7.Nc3 Bd6 8.Rc1 Ne7 9.Ne4 0-0 10.Nf3 Nbc6 (10...a5 11.b5=) 11.d4 ed4 (11...Bd5 12.Nd6 cd6 13.Nd2=) 12.Nd4+= Nd4 13.Bd4 Ng6 14.Qc2 Re8 15.Bd3 (15.Bc4 Bc4 16.Qc4 Kh8 17.Nd6 Qd6+=) 15...Be5 16.Rd1 Bd4 17.ed4?? (17.Bc4!? Qe7 18.Rd4+=) 17...Qd4?? (17...f5 18.0-0 fe4 (18...Re4?! 19.Be4 fe4 20.Qe4-/+) 19.Be4 c6-+) 18.0-0=+ Qb6 19.Nc5 Rad8 (19...c6 20.Rfe1=+) 20.Rfe1 (20.Na4 Qc6 21.Qc6 bc6 22.Bg6 Bg6 23.Rd8 Rd8=) 20...Re1=+ 21.Re1 Qd6 (21...c6 22.Bc4=+) 22.Bc4 Qd2 23.Bf7 Kf7 24.Qc4 Qd5 25.Qg4 (25.Qd5!? Rd5 26.Nb7=) 25...Ne5 26.Qh5 Kg8 27.h3 (27.f4 Qd4 28.Kh1 Qf4 29.Nb7 g6-/+) 27...Qd2 (better 27...b6 28.Ne4 c5-/+) 28.Re2?? (better 28.Rf1=+) 28...Qd1-+ 29.Kh2 g6 30.Re5 (30.Qh4 Qe2 31.Qf6-+) 30...Qh5 (better 30...gh5 31.Re3 b6-+) 31.Rh5 gh5 32.Ne6 (32.Nb7 Rd3-+) 32...Rd7 (32...Rd3 33.Nc7 Kf7 34.a4-+) 33.Nf4? (33.Nc5 Rd2 34.Nb7-+) 33...c6 (33...Kf7 34.h4-+) 34.Nh5 (34.Ne6 b6-+) 34...Rd3 (34...Kf7!? 35.Nf4-+) 35.Nf6 Kg7 36.Nh5 (36.Ne4 Ra3 37.Nc5 b6-+) 36...Kh6 37.Nf4 (37.Ng3 Ra3 38.Nf5 Kg6-+) 37...Ra3 38.g4 (38.Ne6 Rb3-+) 38...a5 (38...Rf3 39.Ne6 Rf2 40.Kg1-+) 39.Ne6?? (39.ba5 Ra5 40.h4-+) 39...ab4 40.f4 White intends g5 (40.Nc5-+) 40...b3 41.h4 White prepares the advance g5 41...Kg6 (41...b2 42.g5 Kh5 43.Nd4 b1Q 44.g6 Qb2 45.Ne2 Qe2 46.Kg1 Ra1) 42.f5 Kf6 43.Nd4 (43.Nc5 b2 44.Ne4 Kf7 45.Nd6 Ke7 46.Nc4-+) 43...b2 44.g5 Ke5 45.Nf3 (45.Nc2 Rc3 46.f6 Rc2 47.Kg3 Rc3 48.Kf2 b1Q 49.Ke2 Qb2 50.Kd1 Rc1) 45…Kf4 (45...Kf4 46.Nd2 Kf5-+; 45...Rf3 46.Kg2 Rf5 47.Kh3 b1Q 48.Kg4 Qg1 49.Kh5 Rf6 50.gf6 Qg6) 0-1. zembelek (2115) - marjan (2015), Rated Blitz game, lichess.org, 2014.

5.cd5+= Bd5 6.a3 Nh6 7.Nc3 Bf7 8.Nf3 Be7 (8...a5 9.b5=) 9.d4 ed4 10.Nd4 0-0 (10...a5 11.b5+=) 11.Be2 (11.Qf3 c6+=) 11...c6 (11...a5!?=) 12.0-0+= Nd7 13.Ne4 (13.Qc2 c5 14.bc5 Nc5+=) 13...Qb6 (13...a5 14.ba5 f5 15.Ng3 Ra5 16.Bd3+=) 14.Nb3 Rfd8 15.Qc2 Ne5 16.h3 (16.Rfd1 Nf5 17.Nd4 Nd6+=) 16...Kh8 (16...Nf5 17.Nd4 Nd6 18.Nc5=) 17.Na5 (17.Rfd1 Nf5 18.Rd8 Rd8 19.Nf6 Bf6 20.Qf5 Bg6+=) 17...Bg6 18.Nc4 Nc4 19.Qc4 Nf5 20.Rfd1 Ne3 (better is 20...a5!? 21.Bc3 ab4 22.ab4 Ra1 23.Ra1 Nd6 24.Nd6 Bd6+=) 21.fe3+/– Qe3 22.Nf2 Rd2 (22...Bd6 23.Qg4+/–) 23.Rd2+– Qd2 24.Bc3 Qe3 25.Qd4?? (25.Bf3 Re8+–) 25...Qg3?? (25...Qe2 26.Re1 c5 27.bc5 Bc5 28.Re2 Bd4 29.Bd4 b6+–) 26.Rd1+– h6 (26...Bc2 27.Rd2 Bf5 28.Bf3+–) 27.Qg4 Qg4 28.Bg4 (28.Bg4 Rd8 29.Rd8 Bd8 30.Bd4+–) 1–0. Ganesan,Arasu – Grund,Karl, corr, 1991.

5.cd5 Bd5 6.b5 Bc5 7.Nc3+/– Be6 8.Be2 (8.Ne4!? Nd7 9.Qc2+/–) 8...Ne7+= 9.Ne4 Bb6 10.a4 a5 (10...Bd5 11.Qc2 f5 12.Ng3+/–) 11.Bh5 Ng6 12.Nf3 (12.Qc2 f5 13.Nc5 Bc5 14.Qc5 Nd7+=) 12...0-0 (12...Qd3 13.Qb1 Qb1 14.Rb1=) 13.Bg6 (13.Qc2!?+=) 13...hg6= 14.0-0 (14.Qc2 g5 15.h3 Qd5=) 14...Nd7 (14...Qd3 15.Qb1 Rd8 16.Rc1+=) 15.d4 (15.Qc2 Bd5=) 15...ed4 16.Nd4 Bf7 17.Rc1 Qe7 18.Qc2 Rfe8 19.Ng3 Rad8 20.Ba3?? (better is 20.Rfd1+=) 20...Qa3–+ 21.Rfd1 Ne5 22.Ra1 Qb4 23.Qe2 (23.Rab1 Qe7–+) 23...Bd4 24.ed4 Rd4 25.Rd4 (25.Qc2 Bb3 26.Qb3 Qb3 27.Rd4 Nd3–+) 25...Qd4 26.Rd1 (26.Rb1 Qa4 27.Qd2 Nc4–+) 26...Qa4 0–1. GuestCNQL – nabucccodonossor, freechess.org, 2017.

5.cd5 Bd5 6.b5 c6 7.Nc3= Bb4 8.Nd5 cd5 9.Qg4 Qe7 (9...Bf8!?+=) 10.Qc8+/- Qd8 (10...Kf7!?+/-) 11.Qb7+- Nd7 12.Qd5 Ne7 13.Qc4 Qa5 14.Nf3 Rc8 15.Qg4 Ng6 (15...Rc2 A) 16.Qg7 Rg8 17.Qh7 Bd2 (17...Rb2?! 18.Rd1=+) 18.Kd1 Rb2-+; B) 16.Bc1 f5 17.Qg7+-) 16.Qe6 (16.Bd3 Kd8+-) 16...Be7 17.Bc4 (17.Bd3 Rc7 18.Qg4 Nc5 19.Bg6 hg6 20.Qg6 Kd8+-) 17...Rf8 (17...Qb4 18.Bb3 Qb5 19.Qf7 Kd8 20.Bc3+/- (20.Qg7 Nc5 21.h4 Nd3 22.Kf1 Nb2 23.Kg1 Qe8-/+)) 18.Bc3 Qa4 19.d3 Rc7 20.0-0 Nc5 (20...Nb6 21.Nd2+-) 21.Qh3 Nd3 22.Bd3 (22.Qh7?! Qc4 23.Qg6 Rf7+-) 22...Rc3 23.Qh7 Rd3 (23...Nh8+-) 24.Qg6 Kd8 (24...Rf7 25.Qd3 Bd8 26.Rfd1+-) 25.Qd3 (25.Qd3 Kc8 26.Rfc1 Kb8 27.Qd7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.cd5 Bd5 6.b5 Nd7!?+=.

5.c3 Ba5 6.Qa4 Nc6 7.Nd2 Nge7 8.Be2 0-0 9.Ngf3 a6 10.Ba3 Bc3–+ 11.Rb1 b5 12.Qc2 Bd2 13.Nd2 Bf5 14.Be7 Qe7?? 15.Qc6+/– (15.Qc6 Rfd8 16.Rc1+/–) 1–0. chexxal – phillane, internet, 2007.

5.c3 Bd6 6.Ba3–/+.

5.c3 Bd6 6.Qh5 g6 7.Qf3–/+.

5.bc5 Bc5 6.Qh5 Ke7 7.c4 e4 8.Be2 Be6 9.cd5 Qd5 10.Qd5 Bd5 11.d3?? ed3–/+ 12.Bd3?? Nc6 13.Nf3 Bf3 14.gf3 Bb4 15.Bc3 Bc3 16.Nc3 Rd8 17.Be4 Kd7 18.Ke2 Kc7 19.a4 a6 20.a5 Nge7 21.Rhc1 Kb8 22.Rcb1 Ka7 23.Rb6 f5 24.Bd3 g6 25.e4 fe4 26.Be4? Rd7 27.Rab1? Rhd8 28.f4 Rd2?? 29.Kf3 R8d7 30.Na4 Nd4?? 31.Kg4+= Nec6? 32.Nc5+– Re7 33.f3 Rg2?? 34.Kh3+– Ra2 35.Nb7 Na5?? 36.Nc5 Re4?? 37.Ra6 (37.Ne4?! Nb5 38.Re6 Nb7+–) 1–0. wojtekkk – rydzykzewsi (1670), internet, 2011.

5.bc5 Bc5 6.Qh5 Kf8 7.Ba3 Qa5 8.Bc5 Qc5 9.Bf5 Nc6 10.Ne2 Nge7 11.0-0?? Bf5–+ 12.c3 Bg6 13.Qg4 Kf7 14.a4 Rhe8 15.Na3 a6 16.h4 h5 17.Qd7 Rab8 18.Ng3 Red8 19.Qh3 Kg8 20.Ne2 d4 21.cd4 ed4 22.Rfc1 Qf5 23.Qf5 Nf5 24.e4 Nh4 25.d3 f5 26.ef5 Bf5 27.Nc4 Bd3 28.Nf4 Bc4 29.Rc4 Ne5 30.Rc7 d3 31.Rd1 Rd6 32.g3 Nhf3 33.Kg2 Ng5 34.Nh5 Ne4 35.Rg7 Kf8 36.Rh7 Nf6 37.Nf6= Rf6? 38.Rh8+– Ke7 39.Rb8 Nc6?? 40.Rb7 Kd6 41.Rd3 Kc5 42.Rf3 Rf3 43.Kf3 Ne5 44.Kg2 Nd7 45.g4 (45.g4 Ne5 46.g5+–) 1–0. wojtekkk – polynesia46 (1735), internet, 2011.

5.bc5 Bc5 6.Qh5 Kf8 7.a4 Be6 8.Ba3 b6 9.Bc5 bc5 10.Bb5 Ne7 11.Qd1 a6 12.Be2 Nbc6 13.d3 g6 14.Nf3 Kg7 15.0-0 Rb8 16.Nbd2 h5 17.Nb3 Qd6 18.h3 Nf5 19.Nh2 d4 20.e4 Nfe7 21.Nd2 f5 22.ef5 Nf5 23.Bf3 Bd5 24.Bd5 Qd5 25.Nc4 Nb4 26.a5 Rhf8 27.Nb6 Qc6 28.Qe2 Rfe8 29.Nf3 Kf6 30.Qd2 Kg7 31.Rfe1 Qd5?? 32.Nd5+– Nd5 33.Re5 (33.Re5 Re5 34.Ne5+–) 1–0. wojtekkk – lesiek007, internet, 2011.

5.Qh5= Kd7 6.b5 e4 7.bc6 Nc6?? 8.Bb5?? Bd6? 9.Bc6?? bc6? 10.Qf7?? Qe7–/+ 11.Qe7 Ne7 12.Ne2 Rb8 13.Bc3 Ba6 14.Nd4 c5 15.Nb3 Nc6 16.d3 ed3 17.cd3 Rhe8 18.0-0? Re7?? 19.N1d2? Bd3–+ 20.Nf3 Be4 21.Nh4 Ne5 22.Be5 Be5?? 23.Nc5=+ Kd6 24.Ne4 de4 25.Rad1 Ke6 26.g3 Rb2 27.Ra1 Rc2 28.Rac1 Ra2 29.Rfd1 a5 30.Rc6 Kf7 31.Nf5 Ra7 32.Rb1 g6 33.Nh6 Kg7 34.Ng4 Ra1 35.Ra1 Ba1 36.h4 a4 37.Rc1 Bb2 38.Rb1 a3 39.f4 h5 40.Nf2 a2 41.Rd1 a1Q 42.Ra1 Ra1 43.Kg2 Ra3 44.Ne4 Re3 45.Nd6 Rd3 46.Ne8 Kf7 47.Nc7 Rd2 48.Kf3 Bd4 49.Nb5 Bb6 50.Ke4 f5 51.Ke5 Re2 52.Kd5 Rg2 53.Nd6 Ke7 54.Nc8 Kd7 55.Nb6 Kc7 56.Nc4 Rg3 57.Ne5 Rg1 58.Ke6 Rf1?? 59.Ng6= Rg1 60.Kf5 Rg4 61.Ne5 Kd6?? 62.Nf7 Ke7 63.Nh6 Rh4 64.Kg5 Rf4 65.Kf4 Kf6 66.Ng8 (66.Ng8 Ke6 67.Kg5=). wojtekkk – gigismau, internet, 2011.

5.Qh5= Kd7 6.Bf5 Kd6 7.Bc8 Qc8 8.Ba3 b6 9.b5 c5 10.Ne2 Qe6 11.d4 Nd7 12.dc5 bc5 13.0-0 Ne7 14.f4 g6 15.fe5 Qe5 16.Qe5 fe5 17.Nbc3 Bg7 18.Rfd1 a6 19.e4 d4–/+ 20.b6? Nb6–+ 21.Rab1 Nc4 22.Bb2 Rhb8 23.Na4 Nc6 24.c3 Nb2 25.Rb2 Rb2 26.Nb2 Na5 27.cd4 cd4 28.Nc4?? Kc5 29.Rc1?? Nc4–+ 30.Ng3 d3 31.Rd1 Kd4 32.h3 Bh6 33.Nf1 Ke4 34.Kf2 Kd4 35.Ke1 e4 36.Ng3 Rf8 37.Nf1 Rf1! 38.Kf1 Ne3 39.Ke1 Nd1 40.Kd1 e3 41.g4 e2 42.Ke1 Ke3 43.h4 d2 0–1. wojtekkk (1650) – kaskar, internet, 2011.

5.b5 b6 6.a4 a5 7.ba6 Na6 8.Ba6 Ra6 9.Qe2 Ra5 10.Bc3 Rc5 11.Na3 Bd6 12.Bb4 Rc4?? 13.Bd6 cd6 14.Nf3?? Ne7?? 15.Nc4+– dc4 16.0-0 d5 17.d3 c3 18.d4 e4 19.Ne1 Qc7 20.Qb5 Bd7 21.Qe2 0-0 22.f4 f5 23.g3 g6 24.Ng2 h5? 25.Nh4 Rf6? 26.Rfb1 Kg7 27.a5! ba5 28.Ra3 Kh6 29.Qe1 Rc6 30.Rbb3 g5 31.fg5 Kg5 32.Rc3 a4 33.Rc6 Qc6 34.Qf2 Qb5 35.Qf4 Kf6 36.Qd6 Be6 37.Qe6 (37.Qe6 Ke6 38.Ra1–+) 1–0. wojtekkk – petrutrifan, internet, 2011.

5.b5 Bd6 6.a4 Ne7 7.Qh5 Bf7 8.Qh3 Ng6 9.Bg6 Bg6 10.Qe6 Qe7 11.Qd5 c6 12.bc6 Nc6 13.Qb5 a6 14.Qe2 Bc2 15.Nf3 Rd8 16.0-0–/+ e4 17.Nd4? Bd3 18.Qe1? Be5 19.Nc6 bc6 20.Be5 Qe5 21.Nc3 0-0 22.h3? Rb8 23.Qd1 Bf1 24.Qf1 Rb2 25.Qc4 Kh8 26.Qc6 Rd2 27.Ne4?? Qa1–+ 28.Kh2 Rdd8 29.Nc5 Rc8 30.Qd6 Qa3 31.g3 Qc5 32.Qf4 Qe5 33.Qb4 h6 34.h4 Rfe8 35.a5 Rc2 36.Kg2 Qe3 37.Qf4 Qf4 38.gf4 Ree2 39.Kf3 Rf2 40.Ke4 Rc4 41.Kd5 Rff4 42.h5 Ra4 43.Kc6–+ Ra5 44.Kb6 Rh5 45.Kc6 Rd4 46.Kb6 Rd1 47.Kb7 a5 48.Ka6 a4 49.Ka7 (49.Kb7 a3 50.Kc7 a2 51.Kc6 Rh2 52.Kb5 Rb2 53.Kc4 a1Q 54.Kc5 Qc1) ½–½. wojtekkk (1665) – maznik61, internet, 2011.

5.b5 Bd6 6.Qh5 Bf7 7.Qd1 Ne7 8.c3 0-0 9.Ne2 c6 10.0-0 a6 11.ba6 Na6 12.Ba6 Ra6 13.a4 Qa8 14.d3 b5 15.a5 Ra5 16.Ra5 Qa5 17.Nd2 Ra8 18.Qc2 Qd8 19.h3 Ra7 20.Ra1 Qa8 21.Ra7 Qa7 22.g3 Qa2 23.Kg2?? Ba3 24.Nf3 Qb2 25.Qd1 c5 26.h4 c4 27.d4 Qb3 28.Qa1 e4 29.Nh2 Qb2 30.Qe1 b4 31.cb4 Bb4 32.Qd1 Qa3 33.Ng4 c3 34.Nc3 Bc3 35.Qb1 Qb2 36.Qf1 h5 37.Nh2 Nf5 38.g4 Ne3 (38...Ne3 39.Kh1 Nf1 40.Nf1 Qf2 41.Nh2 Bd4 42.Nf3 ef3 43.gh5 Qh4) 0–1. wojtekkk – omonstro, internet, 2011.

5.Bb5 c6–/+ 6.Be2 Bd6 7.a3 Ne7 8.Bh5 Ng6 9.Bg6 hg6 10.d3 Nd7 11.Nd2 Qe7 12.c4 c5 13.bc5 Nc5 14.cd5 Nd3 15.Ke2 Nb2 16.Qb3 Nd3 17.Qd3 Bd7 18.a4 Kf7 19.Qb3 b6 20.Ngf3 Rac8 21.h3 g5 22.Rhc1 Rc1 23.Rc1 g4 24.hg4 Bg4 25.Ne4 f5? 26.Nd6+/– Qd6 27.Rc6 Qd8 28.d6 Kf8 29.Rc7 Bh5 30.Qe6 e4 31.Rc8 ef3 32.gf3 (32.gf3 Qc8 33.Qc8 Be8 34.d7+–) 1–0. wojtekkk – niko110, internet, 2011.

5.h4 Bd6 6.h5 Ne7 7.h6 g6 8.Bb5 c6 9.Be2 Bb4 10.Bc3 Bd6 11.a4 Nd7 12.Bg4 f5 13.Be2 Kf7 14.d4 Rg8 15.de5= Be5 16.Be5 Ne5 17.Nf3 Nf3 18.Bf3 Re8 19.Qd4 Rg8 20.Nd2 Qd6 21.0-0 c5 22.Qh4 Rad8 23.c3 b6 24.Rfd1 Qe5 25.a5 Qc3 26.ab6 ab6 27.Ra7 Rd7 28.Rd7 Bd7 29.Qf4 Be6 30.Qd6 Qa5 31.Nb3 Qa7 32.Nd2? Qb7?? 33.Be2?? Qc6?? 34.Qg3–/+ Rc8 35.Nf3 Qc7?? 36.Qc7 Rc7= 37.Ne5?? Kf6–+ 38.Nd3 c4 39.Nf4 b5 40.Nd5 Bd5 41.Bf3 Bf3 42.gf3 Ke6 43.f4 c3 44.Rc1 b4 45.Kg2 b3 46.e4 fe4 47.f3 e3 48.f5 Nf5 49.f4 b2 50.Rb1 (50.Rb1 c2 51.Rg1 c1Q 52.Rd1 Qc2 53.Kh3 Qf2 54.Rg1 Qf3 55.Kh2 Rc2 56.Rg2 Qg2) 1–0. wojtekkk (1635) – maznik61, internet, 2011.

5.Qh5 Bf7 6.Qg4 Qd7 7.Qd7 Nd7 8.a3 a6 9.Be2 Bd6 10.d3 Ne7 11.Nf3 Ng6 12.0-0 0-0 13.Nbd2 f5 14.c4 c6 15.c5 Bc7 16.Ng5 Be8? 17.Ne6+– Bd8 18.Nf8 Kf8 19.Bh5 Ke7 20.Bg6 hg6 21.Nf3 Kf6 22.h3 Bc7 23.e4! d4 24.ef5 gf5 25.Rfe1 Bf7 26.Nh2 g5 27.g4 f4 28.f3 Rh8 29.Kg2 Bd5 30.a4 Nf8 31.b5 ab5 32.ab5 Ng6 33.bc6 Bc6 34.Rh1 Nh4 35.Kf2 Ng6 36.Nf1 Nh4 37.Nd2 Ng6 38.Ne4 Be4 39.fe4 Ne7 40.Ra7 Rb8 41.Ba3 Nc6 42.Ra4 Rh8 43.Rc4 Na5 44.Rb4 Nc6 45.Rb7 (45.Rb7 Rh7 46.Rhb1+–) 1–0. wojtekkk (1670) – maznik61, internet, 2011.

5.Qh5 Bf7 6.Qg4 Qd7 7.Qd7 Nd7 8.b5 c6 9.bc6 bc6 10.a4 a5 11.Ba3 Ba3 12.Na3 Ne7 13.Be2 0-0 14.Nf3 h6 15.0-0 Rfb8 16.h3 Rb2 17.Rfb1 Rab8 18.Rc1 Nc5 19.Ne1 Ne6 20.Nd3 R2b6 21.Bg4 f5 22.Be2 Ng6 23.h4 e4–+ 24.Ne1 Nh4 25.d3 Ng6 26.de4 fe4 27.f3 ef3 28.Nf3 Kf8 29.Bd3 Ke7 30.Bg6 Bg6 31.Ne5 Be8 32.c4 d4 33.ed4–/+ Nd4 34.c5 Rb3 35.Re1 Kf6 36.Ng4? Kg5–/+ 37.Nf2 Kf5 38.Rf1 Ne2 39.Kh2 1–0. wojtekkk (1685) – maznik61, internet, 2011.

5.Qh5 g6 6.Qd1 Be6 7.Bb5 c6 8.Be2 Bg7 9.b5 c5 10.a4 b6 11.d3 0-0 12.c3 Nd7 13.Nf3 Qc7 14.0-0 Rad8 15.Nbd2 d4 16.e4 dc3= 17.Bc3 Rfe8 18.Qb1 Nf8 19.Bd1 Bg4 20.h3 Bf3 21.Nf3 Ne6 22.Bb3 Qd7 23.Bc4 Kh8 24.Bd2 Nd4 25.Nd4 ed4 26.Qc1 f5 27.ef5 Nf5 28.a5 Re2 29.Bf4 Rde8 30.ab6 ab6 31.Bg5 h6 32.Bf4 g5 33.Bh2 Be5 34.Be5 R8e5 35.Ra8 Re8 36.Re8 Qe8 37.Qa3 Qb8 38.Qc1 Nh4 39.Qd1?? Qb7 40.f3 Qe7 41.Rf2 Rf2 42.Kf2–/+ Qe3 43.Kf1 Nf5 44.Qa1?? Ng3 0–1. wojtekkk – omonstro, internet, 2011.

5.Qh5 g6 6.Qd1 Bg7 7.a3 Be6 8.Bb5 c6 9.Be2 Nd7 10.d3 a5 11.ba5 Qa5 12.Bc3 Qc7 13.Bg4 Bg4 14.Qg4 0-0 15.Qe6 Kh8?? 16.Qe7+– c5 17.Qe6 f5? 18.Qd5 Nb6 19.Qf3 Na4 20.Ne2 c4 21.0-0 cd3 22.cd3 Nc3 23.Nbc3 e4 24.Qg3 Qg3 25.Ng3 Bc3+/– 26.Rac1 Be5 27.de4 Bg3 28.hg3 fe4 29.Ra1 Rfd8 30.Rfb1 Rd3 31.a4 Rb8 32.Rb4 Rd5 33.Re4 Ra5 34.Rb4 b5? 35.e4 Kg7?? 36.f3 Kf6?? 37.Kf2 Ke5?? 38.Ke3 Kd6 39.Kd4 Kc6?? 40.Rc1+– Kd6 41.e5 Ke6 42.Rc6 Kf5 43.g4 Kf4 44.Rf6 Kg3 45.Rb2 Ra4 46.Kc5 b4 47.e6 b3 48.e7 Ra5 49.Kc4 Re5?? 50.Rf7 Rc8? 51.Kb3?? Rb8 52.Kc3 Rc5?? 53.Kd3 Rd5 54.Ke4 Re5 55.Ke5 (55.Ke5 Rb2 56.Rh7 Kg2 57.Rh8+–) 1–0. wojtekkk – pauloregato, internet, 2011.

5.Ng3 Be6 6.Bb5 c6 7.Be2 Ne7 8.c3 (8.f4 Bd6-/+) 8...Bd6 9.Na3 (9.0-0 0-0-+) 9...0-0-+ 10.Nc2 c5 11.d3 b5 (11...Nbc6 12.0-0-+) 12.0-0 Nbc6 13.Bf3 a5 Black intends b4 14.c4 b4 (14...dc4 15.Ne4 f5 16.Ng5-+) 15.cd5-/+ Bd5 (15...Nd5 16.Bg4 Qd7 17.Be6 Qe6 18.e4-+) 16.Bd5 Nd5 17.Qf3 Be7 (17...Nce7 18.e4 Nf4 19.Bc1-/+) 18.Nf5 g6 19.Ne7 Nce7 20.Qg3 (20.e4 Nc7-/+) 20...a4 21.h4? (better 21.Rab1-/+) 21...a3-+ 22.Bc1 (22.Be5 fe5 23.Qe5 Nc3 24.Qe6 Kg7-+) 22...Nc3 23.Re1 (23.Qg4 Qd3 24.Ne1 Qd5-+) 23...Qd5 (better 23...Qd3 24.Nb4 cb4 25.Qg4-+) 24.Bd2 (24.e4 Qe6-+) 24...Na2 25.h5 (25.Red1 Rfd8 26.e4 Qb3-+) 25...Qb3 (25...Qd3!? 26.Ra2 b3 27.Ra3 Qd2 28.Rb3 Qc2 29.e4-+) 26.hg6 Ng6 27.f4 (27.Qg4 Qc2 28.Qe6 Kh8 29.Ra2 Qd3-+) 27...ef4 (27...Qc2 28.f5 Qd2 29.fg6-+) 28.Qf2 (28.Qg4 Qc2 29.Qe6 Kg7 30.Ra2 Qd3 31.Bc1-+) 28...Qc2 29.Re2 (29.ef4 b3-+) 29...fe3 (better 29...b3 30.Qe1-+) 30.Be3 Qb3 (better 30...Qc3 31.Rea2 b3 32.Ra3-+) 31.Rea2 Qd3 (31...c4 32.dc4 Qc4 33.Rc1-+) 32.Bc5 Rfb8 33.Qf6 Qd7 (better 33...Ra6 34.Qg5 Rb5-+) 34.Bd4 (34.Qf2-+) 34...Rf8 35.Qh8 (35.Qb6 Rab8 36.Qc5-+) 35...Nh8 36.Rd2 Rfd8 37.Rad1 b3 38.Rd3 b2 39.Bb2 ab2 40.Rd7 Rd7 41.Rb1 Ra1 42.Kh2 Rb1 (42...Rb1 43.Kh3 Rh1 44.Kg4 Rf7 45.Kg5 b1Q 46.g4 Qg6) 0-1. aravind555 (1680) - uzbekovroman (1730), lichess.org, 2020.

5.Ng3 Be6 6.c3 Bd6 7.Bb5 c6 8.Be2 Qb6 (8...Ne7 9.0-0-/+) 9.Qc2 (9.Ba3 c5-/+) 9...Ne7 10.Bh5 g6 11.Be2 Nd7 12.0-0 h5 13.h4 Nf5 14.Nf5 gf5 (better 14...Bf5 15.d3 g5 16.hg5 fg5-+) 15.Qd1?? (better 15.Ba3 c5 16.c4-/+) 15...Qb2-+ 16.Bh5 (16.Qb3 Qa1 17.d4-+) 16...Ke7 17.Qe2 (17.Na3 Qa3 18.Qe2 Rh6-+) 0-1. aravind555 (1825) - seker37 (1860), lichess.org, 2020.

5.Ng3 Ne7 6.c4 (6.Qh5 Ng6-/+) 6...d4 (6...Be6 7.a3 Bd6 8.cd5 Nd5 9.Nc3-/+) 7.ed4 ed4 8.Bd3 Nbc6 9.Qh5 Kf8 10.0-0 g6 (10...Ne5 11.Qe2-/+) 11.Qh6=+ Kf7 12.a3 Bc5 13.Nh5? (better 13.Ne4 Nf5 14.Qf4-/+) 13...gh5?? (better 13...Qf8 14.Qf8 Rf8-+) 14.Qh5= Ng6 15.Qc5 Re8 (15...Nf4 16.Be4=) 16.Qh5 Rh8 (16...Kg7 17.f4=) 17.f4+- Kg7 18.Rf3 (18.Be4 Rb8+-) 18...Nce7 (18...Qe7 19.Rf2=) 19.f5 Bf5?? (better 19...Qd6+=) 20.Bf5+- (20.Rf5?! Nf5 21.Qf5 Ne5+-) 20...c5 (20...Nf5 21.Qf5 Re8+-) 21.Be6 (better 21.Be4 Ne5 22.Rg3 N7g6 23.Rh3+- (23.Bb7?! Rb8+=)) 21...Qb6= 22.Bc1 Qe6 23.d3 h6 (23...Qe5 24.Qh6 Kf7 25.Ra2=+) 24.Bd2 (24.Qc5 Ne5 25.Rg3 Kf7=) 24...Qe2 (24...f5 25.Nc3=+) 25.Rg3?? (better 25.Qc5 Nh4 26.Rg3 Kf7 27.Qc7=) 25…Qh5-+ (25...Qh5 26.Rf3 Ne5-+) 0-1. aravind555 (1835) - stefan021 (1855), lichess.org, 2020.

5.a3 Bd6 6.c4–/+.

5.a3 Bf8 6.Nh4 (better is 6.Nc3–/+) 6...b6?? (better is 6...Nh6–/+) 7.Qh5+/– g6 (7...Kd7!? 8.Ng6! Qe8+/–) 8.Ng6!+– hg6 9.Qh8 Ne7? (better is 9...Be6+–) 10.Qf6 1–0. Wall,Bill – Seminole, internet, 2001.

5.Nc3 c6 6.Be2 Ne7 7.d4 (7.a3 Bd6-/+) 7...e4 8.Nd2 0-0 9.a3 Bd6 10.f3 f5 11.0-0 Ng6 12.Na2 b5 13.c3 (13.a4 Qh4 14.f4 a6-/+) 13...Qe7 14.a4 ef3 15.Nf3 Qe3 16.Kh1 (16.Rf2 Nf4 17.Bf1 ba4 18.Qa4-/+) 16...Re8 (16...Nf4!? 17.Nc1 Ne2 18.Ne2-+) 17.Bd3 (17.Bb5!? Qh6 18.Bd3-/+) 17...Nf4-+ 18.Bc1?? (better 18.Re1 Nd3 19.Re3 Re3 20.Qd2-/+) 18...Qd3 (worse 18...Nd3 19.Be3 Re3 20.ab5+-) 19.Bf4 Qd1 20.Rad1 Bf4 21.ab5 cb5 22.Nb4 Bb7 (22...Be6 23.Nh4 g5 24.Nd3 Bh2 25.Kh2 gh4 26.Rde1-+) 23.g3 (23.Nh4 a5 24.Nd3 Bc7 25.Nf5 a4-+) 23...Bd6 24.Ng5 g6 25.Nd3 Nd7 26.Rfe1 (26.Rde1 Re1 27.Re1 Rc8-+) 26...h6 (26...Re1 27.Ne1 a6 28.Nc2-+) 27.Ne6 (27.Nf3 a6-+) 27...Kf7 28.Nef4 Re4 29.Re4 (29.Nf2 Re1 30.Re1 Nf6-+) 29...de4 30.Nb4 (30.Nb2 a5 31.Rb1 Ba6-+) 30...g5 31.Ne2 a5 32.Nc2 a4 33.Rb1 (33.Ne3 Kg6 34.c4 b4-+) 33...Ra5 (better 33...e3!? 34.d5 Bd5 35.Kg1-+) 34.Kg1 (34.Ne3 f4 35.gf4 gf4 36.Nf4 Bf4-+) 34...a3 35.Nb4 (35.c4 b4! 36.Nb4 Bb4-+) 35...Nf6 36.Kf2 a2 (36...f4!? 37.Ke1-+) 37.Ra1 Bb4 38.cb4 Ra3 39.Ke1 (39.Nc1 Bd5-+) 39...Nd5 40.Kd2 Nb4 41.Nc3 Bc6 (better 41...e3 42.Kc1 Rc3 43.Kb2-+) 42.Ne2 Rd3 (42...e3 43.Kc1 Nd3 44.Kd1-+) 43.Kc1 Bd5 44.Ng1 Rd4 45.Kb2 Nd3 46.Kc3 Rc4 47.Kd2 Rc1! 48.Ra2 (48.Rc1 Nc1 Combination) 48...Ba2 49.Ne2 Rc6 50.Nd4 Rc5 51.Ke3 Bc4 52.Kd2 Rd5 53.Nc2 b4 (53...Nb4 54.Kc3 Nc2 55.h4 gh4 56.gh4 e3 57.Kb2 e2 58.Kc3 e1Q 59.Kb2 Rd2 60.Kc3 Re2 61.Kb2 Qa1) 54.Na1 b3 (54...Nf2 55.Kc1 Rd1 56.Kb2 Rd2 57.Kc1 e3 58.Nb3 Nd3 59.Kb1 Bb3 60.h3 Rd1) 55.Nb3 Bb3 56.Kc3 Rc5 57.Kd2 (57.Kb3 e3 58.Ka3 e2 59.Ka4 e1Q 60.Kb3 Qc3 61.Ka4 Ra5) 57...Rc2 58.Ke3 Rh2 (58...Ne1 59.g4 f4 60.Ke4 Ke6 61.h4 Rc4) 59.g4 Ke6 60.gf5 (60.Kd4 f4 61.Kc3 Rb2 62.Kd4 Rc2 63.Ke4 Nf2 64.Kf3 Bd5) 60...Kf5 (60...Ke5 61.f6 Bd1 62.f7 Re2) 61.Kd4-+ Rh4 62.Ke3 Ke5 63.Kd2 (63.Ke2 Rf4 64.Ke3 Rf3 65.Ke2 Kd4 66.Kd2 Rf2) 63...Kd4 64.Ke2 Rh2 (64...Rf4 65.Kd2 Rf2) 65.Kf1 g4 (65...Rf2 66.Kg1 e3 67.Kh1 e2 68.Kg1 e1Q) 66.Kg1 g3 67.Kf1 Ke3 68.Kg1 Kf3 69.Kf1 Rh1 0-1. Antares_Sco (2030) - hary_husic (2085), Eastern Classical Arena, lichess.org, 2016.

5.c4 Nc6 6.Qa4 Nge7 7.cd5 Nd5 8.Bb5 Bd7 9.0-0 Qe7 10.a3 Bd6 11.d3 (11.Qb3 a6 12.Bd3–/+) 11...a6–+ 12.Bc6 Bc6 13.Qb3 Qe6 14.Nbd2 0-0 15.Rac1 Kh8 16.Qc2 Qg4 17.h3 Qh5 18.d4 ed4 19.Nd4 Bd7 20.Nc4 Be7 21.Qd1 Qg6 (21...Qd1!? 22.Rfd1 Rad8–/+) 22.Qf3= c6 23.e4 Nc7 24.Rfd1 Rad8 25.Na5 Bc8 26.Nf5 Qf7 27.a4 Rd1 28.Rd1 Rd8 (better is 28...Bb4!? 29.Bc3 Bc3+=) 29.Rd8+= (worse is 29.Ne7 Rd1 30.Qd1 Qe7=) 29...Bd8 30.Nd6 The backward pawn on b7 becomes a target 30...Qd7 31.Qf5 White plans e5 (better is 31.Nab7!? Bb7 32.Nb7+=) 31...Ne6+= (31...Qd6 32.Qc8 Ne6 33.Nb7+–) 32.Nc8 Ba5 (worse is 32...Qc8 33.Nb7 Bb6 34.a5 Bf2 35.Kf2 Qb7 36.Bf6 Qa7 37.Kf3+=) 33.Qa5 Qc8 34.Qf5 Qd7 35.e5 fe5 36.Qe5 Kg8 37.f4 Nc7 38.f5 Nd5 39.Ba3 Kf7 40.g4 Nf6 41.Qe3 Qd1 42.Kh2 Qd7 43.g5 (43.Kg1!?=) 43...Nd5–/+ 44.Qe5 Ne7 (44...b5!?–/+) 45.Be7= Qe7 46.g6 hg6 47.fg6 Ke8 48.Qb8 Qd8 49.Qb7 Qd6 50.Kh1 Qg6 51.Qa6 Qe4 52.Kh2 Qc2 53.Kg3 Qg6 54.Kf4 Qh6 55.Ke4 Qe6 56.Kf4 Qd6 57.Ke3 Qc5 58.Kd2 Qd4 59.Ke1 Qc3 60.Kf2 Qf6 ½–½. Cocquyt,T (2125) – Van Kessel,Wessel (1950), Bruges Masters, 2015. (=1.Nf3 d5 2.b4 f6 3.Bb2 e5 4.e3)

5.Be2 Ne7 6.0-0 0-0 7.c4 c6 8.cd5 cd5 9.a3 Bd6 10.Nc3 Be6 11.h3 Nbc6 12.d3 Qc7 13.Qb3 Bf7 (13...Qd7 14.d4–/+) 14.Nb5 Qb6 15.Nbd4?? (better is 15.Qa4–/+) 15...ed4 16.Qb6 ab6 17.Nd4 Nd4 18.Bd4 Bc5 19.Bb2 Rfe8 20.d4 Bd6 21.Rfc1 Nc6 22.Bb5 Rac8 23.a4 Red8 24.Ba3 Ba3 25.Ra3 Na5 26.Rac3 Be6 27.f4 (27.Rc7 Rc7 28.Rc7 Rc8 29.Rc8 Bc8–+) 27...f5 28.Kf2 Rc3 29.Rc3 Rc8 30.Rc8 Bc8 31.g4? (31.Ke2–+) 31…fg4 0–1. Fournier,Frederic (1860) – chinomafm (1725), Active (7/0), 2005.

5.Be2 Bg4 6.h3 Bf3 7.Bf3 e4 8.Bh5 g6 9.Bg4 h5 10.Be6 (10.Be2=+) 10...Nh6 (10...Qd6 11.Bg8 Rg8 12.a3-/+) 11.h4 (11.c4 dc4 12.Bc4 Qe7=) 11...Qe7 (11...Qd6 12.Bh3-/+) 12.Bh3 (better 12.Bd5!? c6 13.Bb3=) 12...Nc6 13.g4 (13.Nc3 Rd8-/+) 13...Nf7 (13...hg4 14.Bg4 Ng4 15.Qg4-+) 14.g5 (14.gh5 Rh5 15.a3 Bd6-+) 14...Nfe5 15.gf6 (15.a3 Ba5 16.Nc3-+) 15...Qf6 16.a3 (16.Nc3 Nf3 17.Kf1 0-0-+ (17...Qh4?! 18.Nd5 Rf8 19.Bd7 Kd7 20.Rh4 Nh4 21.Rb1+=)) 16...Bd6 (better 16...Nf3 17.Ke2 Qb2 18.ab4 Qa1-+) 17.Be5 (17.Nc3 Nf3 18.Ke2 Rf8-+) 17...Be5 (17...Ne5 18.d4 Rf8 19.Qe2 Nf3 20.Kf1 Nh4 21.Nc3-+) 18.Nc3?! (18.c3 Rf8 19.Rf1 Qh4 20.Be6-+) 18...Rf8 19.Nd5 (19.Rf1-+) 19…Qf2 0-1. aravind555 (1630) - Bryologist (1720), lichess.org, 2019.

5.Nh4 Be7?? 6.Qh5+/– Kd7 7.Qf7?? Qf8 8.Qd5 Ke8 9.Nf3 Nc6 10.Bb5 Bd7 11.d4 e4 12.Nfd2 Qf7 13.Qf7 Kf7 14.Ne4 a6 15.Ba4 b5 16.Bb3 Ke8 17.0-0 Nh6 18.h3 Nf5 19.Nc5 Bc5 20.dc5 Na5 21.Nc3 Nb3 22.ab3 c6 23.Ne4 Be6 24.Nd6 Nd6+= 25.cd6 Kd7 26.Rfd1 Rhd8 27.e4 c5 28.e5 fe5 29.Be5 g6 30.Kh2 Kc6 31.Kg3 Bf5 32.Rd2 Rd7 33.f4 Rad8? 34.Ra6+– Kb7 35.Ra1 Kb6 36.Kf3 h5 37.g4 hg4 38.hg4 Be6 39.Ke4 Kc6? 40.f5 gf5 41.gf5 Bf7 42.Bf6 Rg8 43.Be7 Rg4 44.Kf3 Rg8 45.f6 Bd5 46.Kf4 Bf7 47.Kf5 Kb6 48.c4! bc4 49.bc4 Bc4 50.Rb2 Kc6 51.Rab1 Rd6?? 52.Rb6+– Kd5 (52...Kd5 53.Rd6) 0–1. j1a9n55 – antoniusz555, internet, 2011.

5.Nh4 Ne7 6.Qh5 g6 7.Qh6 Be6 (better 7...Kf7!? 8.e4 Bc5-+) 8.Qg7=+ Rf8 9.Qh7 g5 10.Ng6 (10.Qh5 Kd7 11.Ng6 Ng6 12.Qg6 Rg8=+) 10...Rf7 (better 10...Bf5!? 11.Nf8 Bh7 12.Nh7 Qd6-/+) 11.Qh8 Kd7 12.Qd8 Kd8 13.Ne7 Ke7 14.c3 Bd6 15.Be2 c5 16.d4 cd4 17.cd4 e4 (17...Nc6 18.Nd2=+) 18.Nd2 Nc6 19.a3 a6 20.0-0? (better 20.a4!?=+) 20...Rh8 21.f3 f5 (better 21...ef3 22.Nf3 g4-+) 22.fe4?? (22.h3 b5=+) 22...fe4?? (better 22...Bh2 23.Kf2 fe4 24.Ke1 Bg3 25.Kd1 Bf2-+) 23.Rf7-/+ Kf7 (23...Bf7 24.h3=+) 24.Nf1 (24.h3 Rc8=+) 24...Kg6 25.Rc1 Bd7 26.g3 Rf8 (26...Na5 27.Bc3 Rc8 28.Bd2 Rc1 29.Bc1-+) 27.Nd2 Bh3 (better 27...Na5-/+) 28.Ba6= Ra8?? (28...ba6 29.Rc6 Double attack (29.Rc6 Deflection; 29.Rc6 Decoy; 29.Rc6 Overloading)) 29.Rc6 (better 29.Bb7 Rb8 30.Rc6 (30.Bc6?! Rb2 31.Nb1 Rg2 32.Kh1 Re2+-) 30...Rb7 31.Rd6 Kh5 32.Bc3+-) 29...Ra6?? (better 29...bc6 30.Be2 Ba3-+) 30.Rc8?? (better 30.Ra6 ba6 31.Nb3=) 30…Bc8-+ 0-1. alessandrocarvalhaes (2035) - granmmaestro (2090), lichess.org, 2021.

5.Qd1 Bb4 6.Nf3 a6 (6...Ne7 7.Be2–/+) 7.a3 (better is 7.c4–/+) 7...e4?? (7...Bd6 8.c4 e4 9.Ng1–/+) 8.Nd4 (better is 8.ab4!? ef3 9.Qf3+=) 8...Bc5 (8...Bd6 9.c4 c5 10.Nb3–/+) 9.f3 (9.d3 Bd6+=) 9...ef3 (9...Bd4 10.Bd4 Nc6 11.Bb2–/+) 10.Qf3+= Bd4 11.Bd4 Ke7 (better is 11...Nc6!?–/+) 12.c4 1–0. GuestRRGG – GuestQFHB, freechess.org, 2016.

5.Qd1 Bd6 6.b5 Ne7 7.c4 (7.d4 0-0+=) 7...c6 (7...Be6 8.Nc3 Nd7 9.d4 ed4 10.ed4 dc4 11.Qf3–/+) 8.a4 (8.d4 0-0=) 8...0-0 (8...Be6 9.cd5 Nd5 10.Nf3+=) 9.Qb3 (9.d4 ed4 10.Qd4 Be6+=) 9...Be6 (9...Nd7 10.d4+=) 10.cd5 (10.Nf3 Nd7+=) 10...cd5 11.Nf3 Nd7 12.Nc3 Nc5 13.Qc2 (13.Qd1 Qa5+=) 13...Rc8–/+ 14.d4 (14.Rc1 Nf5 15.d4 ed4 16.ed4 Ne4–/+) 14...Bf5 (14...Ne4!? 15.Ng1–+) 15.Qd1–/+ Ne4 16.Ne4 Be4 (16...de4?! 17.de5 Bb4 18.Nd2 fe5 19.Be5+=) 17.Bd3?? (17.Ba3 Ba3 18.Ra3 Qa5 19.Nd2 ed4–+) 17...Bf3 (better is 17...Bd3 18.Qd3 e4–+) 18.gf3–/+ Bb4 19.Ke2 ed4 (19...Bc3 20.Bc3 Rc3 21.de5 fe5 22.Qd2+=) 20.Bd4= Bc3 (20...Qa5 21.h4=) 21.Bc3 Rc3 22.Rc1 (22.h4 Qa5=) 22...Qa5 (22...Rc1 23.Qc1 f5 24.h4=) 23.Qd2 Rfc8 24.Rhd1 (24.Rc3 Qc3 (24...Rc3?? 25.Rc1+–) 25.Qc3 Rc3=) 24...d4 (24...Qb4!?=) 25.ed4+= Nd5? (better is 25...Qb4 26.Rc3 Rc3+=) 26.Qa2?? (better is 26.Be4 Nb6 27.Rc3 Qc3 28.Qc3 Rc3 29.a5+–) 26...Rc1–+ 27.Qd5 Kg7 (better is 27...Kh8 28.Qf7 Qd8 29.Rc1 Rc1–+) 28.Qd7= Kh6 29.Qh3 Kg7 30.Qd7 Kh8 (better is 30...Kh6!? 31.Qh3 Kg7 32.Qd7=) 31.Rc1+/– Rc1 32.Qe8 Kg7 33.Qd7 (better is 33.Qe7!? Kg8 34.Bc4 Rc4 35.Qe6 Kg7 36.Qc4+/–) 33...Kf8= 34.Qd6 Kg7? (34...Ke8 35.Qe6 Kd8 36.Qf6 Kc8 37.Qh8 Qd8 38.Qd8 Kd8 39.f4=) 35.Qd7 (better is 35.Qe7!? Kg8 36.Bc4 Rc4 37.Qe6 Kg7 38.Qc4+/–) 35...Kh8 (35...Kh6 36.Qh3 Kg7 37.Qd7=) 36.Qe8 Kg7 37.Qd7 ½–½. DEFFM – PamelaLew, freechess.org, 2016.

5.Qd1 Bg7 6.b5 Ne7=+ 7.Nf3 0-0 8.d3 d4 9.e4 Bg4 10.Be2 c6 11.a4 cb5 12.ab5 Qb6 13.c4 dc3 14.Nc3 Qb5?? 15.Nb5+– Nbc6 16.Ba3 a6 17.Nd6 b5 18.0-0 b4 19.Bb2 a5 20.h3 Be6 21.Nc4 Nc8 22.Qa4 Bd7 23.Qc2 N8e7 24.Ne3 Rfc8 25.Nd5 Nd5 26.ed5 Nd4 27.Qd1 a4 28.Bd4 ed4 29.Nd4 b3 30.Bf3 Ra7 31.Nc6 Bc6 32.dc6 f5 33.d4 h5 34.Qd2 Rb8 35.Rfb1 a3 36.Qc3 (36.Qc3 Bf8 37.Rb3+–; 36.Qf4 Rd8 37.Rb3 Kh7+–) 1–0. stoker – hercules53, Live Game Caissa's Web, 2005.

5.Qe2 Bb4 6.Nf3 Bg4 7.Qd1 Nc6 8.Be2 Bf3 9.Bf3=+ e4 10.Bg4 Ne5 11.Be2 Ne7 12.0-0 0-0 13.d3 ed3 14.cd3 Bd6 15.d4 N5c6 16.Qb3 Na5 17.Qc3 Nec6 18.Bf3 Kg7 19.Bd5?? Bh2 20.Kh2 Qd5 21.Kg1 Nc4 22.Nd2 Nb2 23.Qb2=+ b6 24.Nf3 Rfe8 25.Rfd1 Re4 26.Nd2 Rh4 27.Nf3 Rh6 28.e4 Qe4–/+ 29.Re1 Qg4 30.Qc2 Qh5–+ 31.Kf1 Qh1?? 32.Ke2+= Re8 33.Kd3?? Nb4 34.Kc3 Re1 (34...Re1 35.Re1 Nc2 36.Rh1 Rh1 37.Kc2 Rf1–+; < 34...Nc2 35.Rh1 Na1 36.Ra1–+) 0–1. stoker – jeanne2, Live Game Caissa's Web, 2006.

5.Qe2 f5 6.Be5 Nf6 7.Qb5 Nc6 8.Nf3 a6 9.Qd3 Nb4 10.Qc3 Ne4 11.Qc7 Nc2 12.Ke2 Rg8 13.Qc2+– Qa5 14.d3 Nc5 15.Nd4 Bd7 16.Nb3 Nb3 17.Qb3 Bb4 18.a3 Ba4 19.Qb4 Qb5 20.Qb5 Bb5 21.Nc3 Bc6 22.Kd2 b5 23.Be2 0-0-0 24.Rhc1 Rge8 25.d4 Rd7 26.h3 Re6 27.f4 Ba8 28.Nb5 Bc6 29.Nc3 Rb7 30.Ba6 1–0. Familyfork – FieldMarshall, Live Game Caissa's Web, 2004.

5.Qh4 Nc6 6.b5 (6.Bb5 Bf5+=) 6...Nb4 7.Na3 Bf5 8.Nf3 (8.d3 a6 9.e4 Bd7–/+) 8...Qd6 (8...Bc2 9.Ne5 h6 10.Qg3=) 9.d3 (9.Qg3 Qe6+=) 9...d4 (9...g5 10.Qh5 Bg6 11.Qh3 Nd3 12.Bd3 Bd3 13.0-0-0–+) 10.ed4 Nd3 11.Bd3 Qb4 12.Nd2? (better is 12.Ke2 Bd3 13.Kd3 Qb2 14.Nc4 Qb5 15.Rhb1+=) 12...Qb2–+ 13.Rb1 Qa3 14.Bf5 Bh6?? (better is 14...gf5 15.Qh5 Ke7 16.Qf5 Rd8 17.de5 Qc3 (worse is 17...Qa2 18.f4–+) 18.ef6 Nf6–+) 15.Be6= Bd2 (15...Qc3 16.Rd1=) 16.Kd2 Qe7 (16...Rd8 17.c3=) 17.d5+= Rd8 18.Ke2 Qc5 (18...Qa3 19.Qc4 Qd6 20.Rhd1+=) 19.Rhc1 Ne7 Can d5 get defended? 20.c4 Rd6 (20...h5 21.Qf6 Rf8 22.Qh4+/–) 21.Rb3 (21.Kf1!?+/–) 21...Re6+= 22.de6 Nf5 23.Qe4 (23.Qf6 Rf8 24.Qg5 Nd4 25.Kd1 Nb3 26.ab3 Rf2–+) 23...Nd4 24.Kf1 Nb3 25.ab3 Qa3 (25...c6 26.Rd1 Ke7 27.b4 Qb4 28.bc6+/–) 26.Rd1 (26.Re1+/–) 26...Ke7 (26...0-0!? 27.Qb7 Qb3+/–) 27.Qb7+– Qc5 28.Rd7 (28.g4!? Rd8 29.Rd8 Kd8 30.Qb8 Ke7+–) 28...Ke6 29.Qc7 Qc7 30.Rc7 Ra8 31.Rh7 f5 (31...e4 32.b4+–) 32.Ke2 (32.Rc7 Kf6+–) 32...e4 (32...Kf6 33.Kd3+–) 33.h4 f4 (33...Ke5 34.Re7 Kf6 35.Rc7+–) 34.h5 (34.g4 fg3 35.fg3 a6+–) 34...g5?! (34...gh5 35.Rh6 Ke5 36.Rh5 Ke6+–) 35.Rc7 Ke5 (35...g4 36.h6 a5 37.c5+–) 36.h6 1–0. Mroz,Antoni – Wasniewski,Kazimierz, corr Poland, 1988.

5.Qh4 d4 6.ed4+= Bb4 (6...ed4!? 7.Bb5 Kf7 8.Bd4 Qd5+/–) 7.de5+/– Qe7 8.Be2 Nc6?? (8...Nd7 9.Nf3+/–) 9.Nf3 (better is 9.ef6 Qf7 10.Nf3 Kd8+–) 9...Bf5?? (9...fe5 10.Qe7 Nge7 11.Ne5+/–) 10.0-0 (better is 10.ef6 Qd7 11.f7 Qf7 12.Bh8 Bc2 13.Ng5+–) 10...fe5 11.Qe7 (11.Bb5 Bd6 12.Bc6 bc6+/–) 11...Nge7 (worse is 11...Ke7 12.Bb5 (12.Be5?! Ne5 13.Ne5 Bd6+=) 12...Nd4 13.Nd4 ed4 14.Re1 Kf7 15.Bc4 Kg7 16.Bd4 Nf6 17.Nc3 Bc3 18.Re7 (18.dc3?! Rhe8+/–; 18.Bc3?! Rhe8+–) 18...Kh6 19.Bc3+–) 12.Ne5 (12.Be5?! Ne5 13.Ne5 Bc2=) 12...0-0?? (better is 12...Rf8 13.Nd3 0-0-0+=) 13.Bc4+– Kg7 (13...Rf7 14.Bf7 Kf8 15.Bb3+–) 14.Nc6 (14.Nf7 Bc3 15.Bc3 Ne5 16.Be5 Kg8 17.Nh6) 14...Kh6+– 15.Ne7 (better is 15.Nb4 Rae8 16.Re1+–) 15...Be7 16.d3 a6 17.Nd2 Bf6 (17...b5 18.Bb3+–) 18.Bf6 Rf6 19.Rfe1 Raf8 20.Nf3 b5 21.Bb3 Bg4 22.Re3 (22.Ne5 Bc8+–) 22...c5 (22...Bf3 23.gf3 Rf4 24.a4+–) 23.a3 (better is 23.Ne5 Bc8+–) 23...Bf3 24.Rf3 Rf3 25.gf3 Rf3 26.Kg2 Rf5 27.Re1 Rg5 28.Kh1 Rf5 29.Kg1 Rg5 30.Kf1 Rh5 31.Kg2 (31.Re6 a5+–) 31...Rg5 32.Kf3 Rf5 33.Kg2?? (33.Ke2 Rh5+–) 33...Rg5 34.Kh1 Rf5 35.Re2 c4 (35...Kg5+–) 36.dc4 1–0. GuestCMWC – jamminjasonj, freechess.org, 2017.

5.Qh4 Qd6 6.b5 Bf5 7.g4 Bc2–/+ 8.Nc3 Nd7 9.Rc1 Be4 10.Ne4 de4 11.Bc4 0-0-0 12.a4?? Kb8 13.g5?? Nc5 14.Bg8?? Rg8 15.gf6 Nd3 16.Kd1 Nb2 17.Ke2 Qd3 18.Ke1 Qd2 19.Kf1 Qc1 20.Kg2 g5 21.Qe4 Qc4 22.Qf5 Nd3 23.Nf3 g4 24.Ne5 Ne5 25.Qe5 Qd5 (25...Qd5 26.Qd5 Rd5–+) 0–1. elsh1403 (1625) – tadekk70, internet, 2011.

5.Qh4 Bd6 6.Nf3 Qe7 7.Be2? Be6 8.b5 Nd7 9.0-0 g5 10.Qh5 Bf7 11.Qg4 f5?? 12.Qa4 Nc5 13.Qa5 b6 14.Qc3+/– Ne4?? 15.Qd3 Nh6 16.Nc3? Nc5–+ 17.Nd5 Nd3 18.Ne7 Nb2 19.Nc6 Na4 20.Nfe5–/+ 0-0 21.Nd7 Rfe8 22.Nf6+= Kg7 23.Ne8 Re8 24.d4 Nc3 25.Bd3 Bd5 26.a4 Ng4 27.Na7 Nh2 28.Rfe1 Ng4 29.a5 f4 30.ef4 Re1 31.Re1 gf4 32.ab6 cb6? 33.Re8?? f3= 34.g3 Nf6 35.Rd8 Be7 36.Rb8 Na4 37.Nc6 Bd6 38.Rb7 Kh6 39.Ne5?? Bb7 40.Nf7 Kg7 41.Nd6 Nd5?? 42.Nb7+– Nac3 43.Nd8 Nc7 44.Nc6+– N7b5 45.Bb5 Nb5 46.c4 Nc7 47.d5 Kf7 48.Nb4 Ke7+/– 49.Kf1 Kd6 50.Ke1 Kc5 51.Nd3 Kc4 52.Ne5 Kd5 53.Nf3 Kc4 54.Ng5 Kc3 55.Nh7 b5 56.Nf6 b4 57.Ne4 Kc2 58.Nc5 Nd5 59.Ke2 Nc3 60.Ke3 Nd1 61.Kf3 Kc3 62.g4 Kc4 63.Na4 Kb5= 64.g5 Ka4 65.g6 b3 66.g7 b2 67.g8Q Nc3?? 68.Qc4+– Ka3 (68...Ka3 69.Qc3 Ka2 70.Qc4 Ka3+–) 0–1. elsh1403 – wadud (1615), internet, 2011.

5.Qh4 Nd7 6.Nf3 Bb4?? 7.Be2?? Be7 8.0-0 f5 9.Qa4 Bf6 10.c4 e4–/+ 11.Ne5 Be5 12.Be5=+ Ngf6 13.cd5 0-0 14.Bc4?? Ne5–+ 15.Qb3 Kg7 16.Be2 Qd5 17.Nc3 Qb3 18.ab3 b6 19.f3 Bb7 20.fe4 Ne4 21.Ne4 Be4 22.d3 Bb7 23.d4 Nd7 24.Rac1 c5 25.b4 Rac8 26.bc5 bc5 27.Rb1 Be4 28.Rbd1 cd4 29.Rd4 Nf6 30.Ra1 Rc7 31.h3 Rfc8 32.Rd6 Ne8 33.Rda6 Rc1 34.Kh2 Ra1 35.Ra1 Rc3 36.Ra7 Kh6 37.Bb5 Nf6 38.Ra6 Nh5 39.g4 Rc2 40.Kg1 Rg2 41.Kf1 Ng3 42.Ke1 Kg5 43.gf5 Bf5 44.Ra7 h5 45.Bc6 Re2 46.Kd1 Re3 47.Ra5 Ne4 48.Be8 Rh3 49.Kc1 Rh1 50.Kb2 Nd2 51.Kc3 Rh2 52.Bc6 Nb1 (52...Nb1 53.Kd4 Kf4–+) 0–1. elsh1403 – itakhjztym, internet, 2011.

5.Qh4 Nd7 6.Nf3 Be7 7.b5 c6 8.Be2 c5 9.Qa4 b6 10.0-0 Bb7 11.c4 d4 12.d3 Nh6 13.h3 Nf5 14.ed4 Nd4 15.Nd4 ed4 16.Bc1 Kf7 17.Qd1 Bd6 18.Bf3 Bf3 19.Qf3 Ne5 20.Qd5 Kg7 21.Rd1 Bc7 22.Qd8 Rad8 23.Bf4 Rhe8 24.Be5 Re5 25.Nd2 Rde8 26.Nf3 Re2 27.Re1 Kf7 28.Re2 Re2 29.Kf1 Rb2 30.a4 h5 31.g3 g5 32.Kg2 Rb3 33.h4 g4 34.Ne1 f5 35.Ra2 Rb1 36.Kf1 f4 37.Ke2? fg3–+ 38.fg3 Bg3 39.Ng2 Rg1 40.Nf4 Bf4 41.a5 Rg2 (41...Rg2 42.Ke1 Ra2 43.Kf1 g3 44.a6 Be3 45.Ke1 g2 46.Kd1 g1Q) 0–1. elsh1403 – phaser (1700), internet, 2011.

5.Qh4 Be6 6.a3 Ne7?? (better is 6...Nd7=+) 7.Qf6+– (7…Rg8 8.Qe6+–) 1–0. Diener,Rudolf – Svensson,Jan, corr 3GMM–11, 1994.

5.Qh4 Be6 6.b5 Be7 7.Nf3 Nd7 8.Be2 Nc5 9.0-0 h5 10.d4? ed4?? 11.Nd4+= Bf7 12.c4 dc4 13.Rd1 Nd7 14.Nc3 Nh6 15.Ne4?? 0-0?? 16.Rac1?? g5?? 17.Qg3+/– h4 18.Qh3 Ne5?? 19.Nf5 g4 20.Nh6 Kg7 21.Qh4 f5 22.Nf5 (22.Nf5 Kg8 23.Qh6 Nf3 24.gf3 Bf6 25.Rd8 Be8 26.Nf6 Rf6 27.Qg7) 1–0. elsh1403 – mareczek47, internet, 2011.

5.Qh4 Be6 6.f4 Bg7 7.Nf3 Nd7 8.Be2 Ne7 9.0-0 0-0 10.fe5 fe5 11.Ng5 Bf7?? 12.Qh7 (12.Nf7?! Rf7 13.Rf7 Kf7 14.Qh7 Qh8 15.Qh8 Rh8+/–) 1–0. elsh1403 (1630) – koritnik2, internet, 2011.

5.Qh4 Be7 6.b5 c5 7.f4 d4 8.Nf3 f5 9.Qf2+= e4 10.Ne5 Bf6 11.ed4 Be5 12.de5 Be6 13.Qc5 Nd7 14.Qd6 Ne7?? 15.Qe6 1–0. elsh1403 – mebel6, internet, 2011.

5.Qh4 Be7 6.b5 Be6 7.f4 Nd7 8.Nf3 c6 9.a4 c5 10.fe5 fe5 11.Ne5?? Bh4–+ (11...Bh4 12.g3 Bf6 13.Nd7 Bb2–+) 0–1. elsh1403 – savaludaglava, internet, 2011.

5.Qh4 Be7 6.f4 f5 7.Qg3?? Nf6 8.Be5= 0-0 9.b5 Nbd7 10.c4 Ne5 11.fe5 Ne4 12.Qf3 d4 13.Bd3 Ng5?? 14.Qd1?? Bc5 15.Nf3? de3 16.de3 Be3 17.Nc3? Bd4 18.Nd4–/+ Qd4 19.Qd2 f4 20.0-0-0 Ne4?? 21.Ne4 Bf5? 22.Nf6 Rf6+/– 23.ef6 Qa1= 24.Kc2 Qa2 25.Kc3 Qa5?? 26.Kb2 Qb6 27.Qc3 Rd8 28.Bf5 gf5 29.Rd8 (29.Rd8 Kf7 30.Rd7 Kg8 31.f7 Kf8 32.Qh8) 1–0. elsh1403 – 18smok (1755), internet, 2011.

5.Qh4 Bf5 6.b5 Qd7 7.Qg3 Bd6 8.e4 de4 9.Qe3 Ne7 10.Ba3 Ba3 11.Qa3 Qd6 12.Qd6 cd6 13.Ne2 Nd7 14.Ng3 0-0 15.Nf5 Nf5 16.Bc4 Kg7 17.0-0 Nd4 18.Na3 Nb6 19.Bb3 Nb3 20.ab3 a6 21.ba6–/+ Ra6 22.Nc4 Nc4–+ 23.Ra6 ba6 24.bc4 Rc8 25.Ra1 Rc6 26.d3 ed3 27.cd3 Kf7 28.Ra5 Ke6 29.f3 Kf5 30.g4 Kf4–+ 31.Kf2 Rb6 32.Ra2 h5 33.h3 hg4 34.hg4 g5 35.Re2–/+ a5?? 36.Re4# 1–0. TONDA – jakesh, Live Game Caissa's Web, 2006.

5.Qh4 Bf5 6.Bb5 Nd7 7.a3 Bc2 8.Nf3 c6 9.Be2 Nh6 10.0-0 Nf5 11.Qh3 Qb6 12.Rc1 Be4 13.d3 Ne3?? (better is 13...Qa6 14.Rd1 Bf3 15.Bf3 Ng7+=) 14.de4+– de4 15.Qe6 (better is 15.Ne5!? Ne5 16.Be5 fe5 17.fe3 Be7+–) 15...Be7+/– 16.Nfd2 Nf5 (better is 16...Nd5!? 17.Ne4 Nf4+/–) 17.Ne4+– Kd8 (17...c5 18.Qb6 ab6 19.b5+–) 18.Rd1 Qc7 (18...Nd4 19.Bd4 ed4+–) 19.Nf6 Bf6 (19...Nd6 20.Ne4! Re8 21.Nd6 Bd6 22.Qd6 Qd6 23.Rd6 Kc7+–) 20.Qf6 Kc8 21.Qh8 Nf8 (21...Qd8 22.Qh7 Qe8+–) 22.Qf8 Qd8 23.Qd8 1–0. GuestTLLV – GuestTVQV, freechess.org, 2017.

5.Qh4 Bf5 6.d3 =+.

5.Qh4 g5 6.Qh5 Kd7 7.b5 (7.Qf7 Kd6 8.c4 dc4 9.Nc3+/– (9.Qc4?! Be6 10.Qe4 Bd5=; 9.Bc4?! Nh6 10.Qd5 Ke7+=)) 7...b6?? (better is 7...Qe8!? 8.Qf3 Qe6+=) 8.c4?? (better is 8.Qf7 Ne7 9.Qf6+–) 8...Qe8 (8...Bb7 9.h4 gh4 10.cd5 Bd5 11.d4+/–) 9.Qd1 (9.Qf3 Bb7+–) 9...d4 (9...Bb7+/–) 10.Nf3 (10.Qg4 Kd8 11.Qe4 c6 12.ed4 ed4 13.Qe8 Ke8 14.Bd4 cb5 15.cb5 Bc5+/–) 10...de3 (10...Bb7!?+=) 11.de3+/– Ke6?? (better is 11...Bd6+/–) 12.Qd5+– Kf5 13.Bd3 Kg4 14.h3 (14.h4 Bb4 15.Kd1 Qc6 16.hg5 Qd5 17.Rh4) 14...Kh5 15.g4 Kh6 16.h4 (16.Qa8 Bd7+–) 16...Bg4 (16...c6 17.hg5 Kg7+–) 17.hg5 Kg7 18.gf6 (better is 18.Qa8 Bd6 19.Nbd2+–) 18...Kf6 (18...Nf6 19.Qa8 Nbd7 20.Qe8 Bb4 (20...Ne8?? 21.Ne5 Bb4 22.Kf1 Ne5 23.Be5 Nf6 24.Rg1+–) 21.Bc3 Re8+–) 19.Be5 Ke7 20.Bc7 (better is 20.Bh8 h6 21.Ne5 Bg7 22.Ng6 Qg6 23.Bg6 Be6 24.Qa8 Bh8 25.Qb8 Ba1 26.Qe8 Kf6+–) 20...Nf6 (20...Bf3 21.Qf3 Bg7 22.Rh4+–) 21.Bd6 (better is 21.Qa8 Na6 22.Qa7 (22.ba6? Qa8 23.Nbd2 Bf3–+) 22...Bf3 23.Be5 Ke6 24.Bf6 Kf6 25.Rh3+–) 21...Kd8 22.Qa8 Bd6 23.Nbd2 (23.Nd4 h5+–) 23...h5 (23...Qe7 24.Rd1+–) 24.Rd1 (better is 24.Qa7 Nfd7+–) 24...Rg8 (24...Qd7 25.Nd4 Kc8 26.f3+–) 25.Be2 (25.Bh7! Nh7 26.Ne4 Ke7 27.Nd6 Qg6+–) 25...Bf5 (25...Nfd7 26.Nd4+–) 26.c5 (26.c5 bc5 27.Nc4 Qb5 28.Rd6 Ke7 29.Qa7 Nbd7 30.Rb6+–) 1–0. GuestPRXR – GuestMTTW, freechess.org, 2016.

5.Qh4 Nh6 6.f4 Nf5 7.Qf2 e4 8.g4 Nd6 9.Qh4 Bg7 10.Ne2 0-0 11.Nd4 Nc6 12.b5 Nd4 13.Bd4 c5 14.bc6 bc6 15.Nc3 f5 16.Qd8 Rd8 17.Bg7 Kg7 18.g5 a5 19.h4 Ba6 20.h5 Bf1 21.Kf1 Nc4 22.Ke2 d4 23.Nb1 d3 24.cd3 Rd3 25.h6 Kf7 26.Rc1 Nb2 27.Rc6 Rad8 28.Rc7 R8d7 29.Rd7 Rd7 30.Nc3 Nd3 31.Rb1 a4 32.Na4+– Ra7 33.Nc3 Rc7 34.a4 Ke7?? 35.a5 Kd6?? 36.Nb5 Kc6 37.Nc7 Kc7 38.a6 Nb4 39.Rb4 (39.Rb4 Kd7 40.a7 Ke6 41.Rb6 Ke7 42.a8Q Kf7 43.Qa7 Ke8 44.Rb8) 1–0. elsh1403 – 1983kar, internet, 2011.

6.b5 Ne7 7.Nf3 0-0 8.Be2 Be6 9.0-0 Nd7 10.d3 c6 11.a4 a6 12.bc6 bc6 13.Ba3 c5 14.e4 d4 15.Nbd2 g5 16.Qg3 Ng6 17.Rfc1?? Rc8?? 18.h4? h6?? 19.hg5 hg5 20.Nh2 Nf4 21.Bg4 Qe7 22.Kf1 Rc7 23.Be6 Qe6 24.Ng4 Rb8 25.Rab1 Rcb7 26.Rb7= Rb7 27.Nc4 Nb6 28.Na5 Rc7 29.Nb3 Na4 30.Qf3 c4 31.Na5 cd3 32.cd3 Rc1 33.Bc1 Nc3 34.g3 Ng6 35.Qh1?? Qb6 36.Nc4?? Qb1–+ 37.Kg2 Ne2 38.Bd2?? Qh1 39.Kh1–/+ Kf7 40.f4?? gf4 41.gf4 Nef4 42.Nd6 Ke6 43.Nb7 Nd3 44.Ba5 Ngf4 45.Kh2 Ne2 46.Kh3 Nc3 0–1. elsh1403 – tyop (1780), internet, 2011.

6.f4 Nc6 7.b5 Nb4 8.Na3 Bf5 9.c3 Nd3 10.Bd3 Bd3 11.Nf3 e4 12.Nd4 f5 13.Qf2?? Bf6 14.Rc1 Nh6 15.h3 Qe7 16.c4?? dc4 17.Nc4–/+ 0-0-0 18.Ba3 Qg7 19.b6 ab6 20.Nb6 Kb8 21.Nc4 Rd4 22.ed4= Bd4 23.Qg3 Qf7 24.Ne5?? Qa2–+ 25.Nd3? Qa3 26.Rc3 Bc3 27.0-0 Bd4 28.Kh1 Qd3 29.Qe1 Rd8 30.Qc1 Bb6 31.Rf2 Bf2 32.Qf1 Qf1 (32...Qf1 33.Kh2 Qg1) 0–1. elsh1403 – piki127 (1625), internet, 2011.

6.f4 Nc6 7.b5 Nce7 8.fe5 fe5 9.Nf3 Nf5 10.Qd8+/– Kd8 11.Be5 Be5 12.Ne5 Ngh6 13.Bd3 Re8 14.Nf3 b6 15.0-0 Bd7 16.c4 Kc8? 17.Nc3 dc4 18.Bc4 Be6 19.Be6 Re6 20.Rac1 Rd6 21.Ne4 Rd5 22.Rfd1 Ng4 23.h3 Ne5 24.Ne5 Re5 25.Nf6 Rb5 26.Nh7 Rb2 27.Nf8 Ra2 28.Ng6 a5 29.h4 a4 30.h5 a3 31.e4 Nh6 32.d4 Kb7 33.d5 Re2 34.e5 a2 35.d6 cd6 36.ed6 Ree8? 37.Rc7 Ka6 38.Ne7 Kb5 39.Ra1 Kb4 40.Nc6 Kb3 41.d7+– Kb2 42.de8Q Re8 43.Ra2! Ka2 44.Rb7 Ng4+/– 45.Rb6?? Re1 0–1. elsh1403 – 1983kar, internet, 2011.

6.f4 Ne7 7.fe5 f5 8.d4 Nbc6 9.b5 Na5 10.Nf3 Be6 11.Ng5 Qd7 12.Ne6 Qe6 13.Be2 h6 14.0-0 0-0-0 15.Qe1 Nc4 16.Bc4 dc4 17.a4 g5 18.a5 Nd5 19.Nc3 f4 20.Nd5 Qd5 21.e4?? Qb5+= 22.Rb1 Qa6 23.d5 Rde8 24.d6?? Be5–/+ 25.Be5 Re5 26.dc7 Rhe8 27.Qb4 Re4 28.Rbd1 Kc7 29.Rd5 R4e5?? 30.Rfd1?? Qe6?? 31.Rd7 Qd7–/+ 32.Rd7 Kd7 33.Qb7 Kd6 34.Qa7 Re1 35.Kf2 R8e2 36.Kf3 Re3 37.Kg4 R1e2 38.Qb6 Kd5 39.a6 Rg2 40.Kf5 Re5 41.Kf6 Rge2 42.Kg7?? Rc2 43.a7 Ra2 44.Qb7 Kd4 45.a8Q Ra8 46.Qa8 Rc5 47.Qd8 Kc3?? 48.Qd1 Kb4 49.Kh6 c3 0–1. elsh1403 – polinejkes123 (1725), internet, 2011.

6.f4 ef4 7.Qf4 Nh6 8.Nf3 0-0 9.Bd3 f5 10.Bg7+/– Kg7 11.0-0 Be6 12.Ng5 Bg8 13.Nc3 c6 14.b5 Nd7 15.bc6 bc6 16.Rab1 Nf6? 17.Rb7+– Nf7?? 18.Ne6 (18.Ne6 Kh8 19.Nd8 Nd8 20.Re7+–) 1–0. elsh1403 – fandasa54, internet, 2011.

4.b5 Ne7 5.c4 a6 6.a4 (6.Qh5 Ng6+=) 6...ab5 (6...Ng6 7.Nc3=) 7.ab5 Ra1 8.Ba1 c6 (8...Ng6 9.Qc2+=) 9.Nc3 (9.Qh5 Ng6+=) 9...d5= 10.cd5 (10.bc6 bc6 11.cd5 cd5 12.d3=) 10...Nd5 (10...cd5!? 11.d3 Qa5=) 11.Ne4 (11.Qh5 g6 12.Qh4 Nb4 13.Qe4 Be7+=) 11...Bf5 12.Nc3 (12.Qf3 Bg6+/–) 12...c5 (12...Nb4 13.e4 Be6 14.Nf3+=) 13.Qh5 (13.Qf3!? Be6 14.Bc4 Nc3 15.Be6 Nb5 16.Qb7+–) 13...g6+= 14.Qd1 Bg7 (14...Nb4 15.e4 Be6 16.Nf3+=) 15.Bc4 (15.Qf3 Nc3 16.Bc3 Qe7+/–) 15...Nb6 16.Qb3 (16.Be2 0-0+/–) 16...Nc4 17.Qc4 Qa5 (17...Nd7 18.Nf3+/–) 18.Bb2 Nd7 19.Nge2 (better is 19.Nd5+/–) 19...Ne5+= 20.Qb3 Nd3 (20...c4 21.Qa3 Nd3 22.Kf1 Qa3 23.Ba3+=) 21.Kf1= Kd8 (21...h6 22.Qa3 Qa3 23.Ba3=) 22.h3 (22.g4 c4 (22...Nb2?? 23.gf5 gf5 24.Qb2+–) 23.Qc4 Nb2+=) 22...Re8 (22...c4 23.Qa3 Qa3 24.Ba3=) 23.g4 (better is 23.Qd5!? Ke7 24.g4+=) 23...Be6+= 24.Qc2 (24.Qa3 Qa3 25.Ba3 f5=) 24...Nb4 (24...Bc4!?+=) 25.Qb1 (25.Qd1 c4=) 25...f5 (25...Bc4 26.Kg2=) 26.gf5 (26.Kg2 Bc4=) 26...Bf5+= 27.Qa1 (27.e4 Be6=) 27...Qa1 (27...Qb6 28.Kg2+=) 28.Ba1= Nc2 29.Bb2 (29.Kg2+=) 29...Bc3 (29...Bd3!? 30.Rg1 b6+=) 30.Nc3= Nb4 31.Kg2 (31.f3 Nd3 32.Ba1 c4=) 31...Be6 (31...Nd3 32.Rb1=) 32.f3 (32.d4 cd4 33.ed4 Bc4+=) 32...Nd3= 33.Ba3 (33.Ba1 Kc7=) 33...c4 (33...b6 34.Kg3=) 34.Ne4 b6 (34...Kc7 35.Ra1=) 35.Ra1+= Ne5? (better is 35...Bd5!? 36.Nf6 Re5 37.Nh7 Bf7+=) 36.Bb2 (36.Nf6 Bd7 37.Ne8 Ke8+–) 36...Nd3 (36...Bd5 37.Bd4 Kc7 38.Ra6 Be4 39.fe4+–) 37.Bc3 (37.Bd4 Kc7 38.Ra7 Kb8 39.Rh7 Rf8+–) 37...Ke7 (better is 37...Kc7 38.Ra7 Kb8 39.Rh7 Rd8+–) 38.Ra7 Kf8 (38...Bd7+–) 39.Bg7 Kg8 40.Bc3 (40.Nf6) 40...h5?? (40...Kf8 41.Ng5 Re7 42.Ra8 Re8 43.Ne6 Kf7+–) 41.Nf6+– Kf8 42.Nh7 Kg8 43.Nf6 (better is 43.Rg7 Kh8 44.Bf6 Nf4 45.ef4 Bf7 46.Ng5 Re2 47.Kf1 Rf2 48.Kf2 c3 49.Nf7) 43...Kf8 44.Ne8 Ke8 45.Bf6 (better is 45.Ra6+–) 45...Nb4 (45...Bd7+–) 46.Re7 Kf8 47.Re6 Kf7 (47...Nd5 48.Rd6 Nb4 49.Bc3+–) 48.Rb6 Nd5 49.Rc6 c3 (49...Ke8 50.Bd4 c3 51.dc3+–) 50.dc3 (50.Bc3!? g5+–) 50...Ne3 51.Kf2 Nd1 52.Ke1 Nc3 53.Bc3 Ke7 54.b6 Kd7 Plans b7 55.Rc4 h4 (55...Ke6 56.b7 Kd5 57.Re4 Kd6 58.b8Q Kc6 59.Qc8 Kd5 60.Qe6 Kc5 61.Re5) 56.b7 Kd6 57.b8Q Kd5 58.Qc7 g5 (58...Ke6 59.Rc6 Kd5 60.Qd6) 59.Qc5 (59.Qc6) 59...Ke6 60.Re4 Kf7 (60...Kd7 61.Re7 Kd8 62.Qc7) 61.Qe7 (61.Qf5 Kg8 62.Re8) 61...Kg8 (61...Kg6 62.Re6 Kf5 63.Qf6) 62.Qg7 1–0. GuestVGMK – GuestHTXS, freechess.org, 2017.

4.Nc3 Bb4!? 5.Nd5 Bf8 6.Qh5 g6+=.

4.Nc3 Nc6=.

4.Nc3 d5? 5.Qh5+– g6 6.Qd5 Qd5 7.Nd5 Bd6 8.f3 ef3 9.Nf3 g5? (better is 9...Nd7+/–) 10.Ng5!+– (10.Nf6?! Nf6 11.Bf6 Rf8 12.Bg5 Bb4+–; 10.Bf6?! Nf6 11.Nf6 Kf7+–) 10...fg5 11.Bh8 Be6 12.Bc4 c6 13.Nc7! Bc7 14.Be6 Ne7 15.0-0 Ng6 16.Rf7 Bd6 17.Raf1 b5 18.Rh7 Bb4 (18...Nf8 19.Rf8! Kf8+–) 19.Bf7 Ke7 20.Bg6 Ke6 (20...Kd6 21.d4 Nd7+–) 21.Bd4 c5 22.Rf6 Kd5 23.Bf7 Ke4 24.d3 1–0. pcmvr (2860) – jomunoz (1890), net–chess.com, 2011.

4.Qg4 Bb4 5.Qg7 Bd2 6.Nd2+–.

4.Qg4 d5 5.Bb5 c6 6.Qe2 cb5 7.Nc3 a6 (better is 7...Bb4!? 8.Qb5 Nc6 9.Qd5 Qd5 10.Nd5–+) 8.Qh5 g6 9.Qd5 Qc7 (9...Bb4 10.Qe4 Qe7 11.Qe7 Ne7–/+) 10.Qe4–/+ Ne7 (better is 10...Qe7!?–/+) 11.Nd5= Qc6 12.Bf6 Be6 (12...Bf5 13.Qe5 Qd5 14.Bh8 Qg2–+) 13.Nc7!!+– (13.Bh8 Bd5 14.Qe5 Bg2–+) 13...Qc7 14.Qe6 (14.Bh8 Bd5 15.Be5 Qc6–+ (15...Be4 16.Bc7 Bg2 17.a4–+)) 14...Nd7 (14...Bg7 15.Bg7 Rg8 16.Bf6+–) 15.Bh8 Qc2 16.Nf3 Qa4 17.Bc3 0-0-0 18.Ng5 Re8 (18...h6 19.Nf7+–) 19.Nh7 Bh6 20.f4 (20.Nf6 Rd8 21.Qe7 Bf8+–) 20...Qc2 (20...Kd8 21.Nf6 Nf6 22.Qf6+–) 21.0-0 (better is 21.Nf6 Rd8 22.Qe7 Nf6 23.Qc5 Kd7 24.Bf6 Qc5 25.bc5 Rc8+–) 21...Kd8 22.Rfc1 Qd3 23.Nf6 Nf6 (23...Rf8 24.Ng4 Bf4 25.ef4 Rf4 26.Ne5+–) 24.Qf6 (better is 24.Qb6 Kd7 25.Bf6 Qd6 26.Qb7 Ke6+–) 24...Rf8 (24...Kd7 25.Qd4 Qd4 26.Bd4+– (26.ed4?! Bf4 27.Re1 b6+–)) 25.Qd4 (better is 25.Qh4 Bf4 26.ef4 Qd6+–) 25...Qd4 26.Bd4 Nd5 27.a3 g5 28.Rc5 Rf5 (28...Nf4 29.ef4 Rf4 30.Be3+–) 29.g4 (better is 29.e4 Nf4 30.ef5 Ne2 31.Kf2 Nd4 32.Rd5 Ke7 33.Rd4 Kf8+–) 29...gf4 (29...b6 30.Rc6 Rf7 31.Rh6 gf4 32.ef4 Nf4 33.Bb6 Kd7+–) 30.gf5 fe3 (30...Ne7 31.Rf1+–) 31.Rd5 Ke8 32.Be3 Bg7 33.Rc1 Kf7 34.Rc7 Kf6 35.Rb7 (better is 35.Bd4 Kg5 36.Rg7 Kf4+–) 35...Bf8 36.Ra7 a5 37.Ra5 Be7 38.Rab5 Kf7 39.Rb6 Kg7 40.Bc5 Bf6 41.Bd4 (better is 41.Rd7 Kh6 42.Be3 Kh5+–) 41...Bd4 42.Rd4 Kf7 43.Rh4 Ke7 44.Rh7 Ke8 45.Rb8 1–0. Buresch,Rene – Franziska,Franzi, remoteschach.de, 2002.

4.a3 a5 A) 5.ba5 A1) 5...Ra5 6.d4 (6.Nf3 d5 7.Be2 Bd6 8.Nc3 c6 9.d4 e4 10.Nd2 Qc7 11.h3+=; 6.Bc3 Ra8 7.d4 ed4 8.ed4 d5 9.Nf3 Bd6 10.Be2 0-0 11.0-0=; 6.e4 d5 7.ed5 Qd5 8.Qh5 Kd8 9.Nc3 Qc6 10.Qd1 Bd6 11.Nf3+=; 6.c4 Nc6 7.Bc3 Ra7 8.d4 ed4 9.ed4 Nf5 10.Nf3 d5 11.c5=) 6...ed4 7.Bd4 Nc6 8.Bc3 Ra7 9.Bc4 Nf7 10.Nf3 Nd6 11.Bd3=; A2) 5...Nc6 6.d4 (6.Nf3 Ra5 7.Bc3 Ra8 8.Bb5 Na7 9.Ba4 c6 10.0-0 d5 11.Bb4+=; 6.Nc3 Ra5 7.Nf3 d5 8.Bb5 Bd7 9.0-0 Bd6 10.Qe2 Ne7 11.Bd7=; 6.Be2 d5 7.a6 ba6 8.Nc3 Bc5 9.Nf3 e4 10.Ng1 Ne5 11.d4=; 6.e4 Ra5 7.Nc3 Bc5 8.Bc4 Nf7 9.Nf3 0-0 10.Qe2 d6 11.Qd3=) 6...Ra5 7.d5 Ne7 8.Nc3 Nef5 9.Nf3 Bc5 10.Nd2 Ra8 11.Nde4+=; A3) 5...Nf7 6.d4 (6.Nf3 d5 7.Nc3 Ra5 8.Be2 Bd6 9.0-0 0-0 10.e4 d4 11.Nb1+=; 6.Be2 d5 7.Nf3 Bd6 8.Nc3 Ra5 9.0-0 0-0 10.Nb5 Be7 11.c4+=; 6.e4 Bc5 7.Nc3 Ra5 8.Bc4 c6 9.Bb3 Qb6 10.Qe2 Qa7 11.Nf3=; 6.Nc3 d5 7.Nf3 Ra5 8.Be2 Bd6 9.0-0 0-0 10.e4 d4 11.Nb1+=) 6...Nc6 7.d5 Na5 8.Nf3 Bc5 9.Bd3 b6 10.Nc3 Nd6 11.Qe2=; A4) 5...d5 6.d4 (6.Nf3 Ra5 7.Be2 Bd6 8.Nc3 c6 9.0-0 b5 10.a4 b4 11.Nb1+=; 6.Bc3 Bd6 7.d4 ed4 8.Bd4 Nf5 9.Bc3 Be6 10.Bd3 Nc6 11.Nf3=; 6.c4 Be6 7.Qb3 Nc6 8.Qb7 Na5 9.Qb5 c6 10.Qa4 Nc4 11.Qc2–/+; 6.Be2 Bd6 7.c4 dc4 8.Bc4 Ra5 9.Qh5 Ke7 10.Nc3 Bg4 11.Qh4=) 6...ed4 7.Bd4 Ra5 8.Nf3 Bg4 9.Be2 Nc6 10.Bc3 Ra8 11.0-0=; B) 5.b5= B1) 5...Nf7 6.d4 (6.Nf3 d5 7.Be2 Bd6 8.0-0 0-0 9.Nc3 Be6 10.Re1 f5 11.Rb1+=; 6.Nc3 d5 7.Nf3 Be6 8.Be2 Bd6 9.0-0 0-0 10.Rb1 Nd7 11.a4+=; 6.Be2 d5 7.d4 Be6 8.de5 fe5 9.c4 c6 10.cd5 Qd5 11.Nf3=; 6.e4 Bc5 7.Nf3 d6 8.Bc4 0-0 9.0-0 f5 10.d4 ed4 11.e5=) 6...d5 7.de5 fe5 8.c4 Be6 9.cd5 Qd5 10.Nc3 Qd7 11.Bd3+=; B2) 5...d6 6.d4 (6.Be2 d5 7.d4 ed4 8.Qd4 Be6 9.Nf3 Nf5 10.Qd2 Bd6 11.Nc3+=; 6.Nf3 d5 7.Be2 Bd6 8.0-0 0-0 9.c4 e4 10.Nd4 c5 11.bc6=; 6.e4 f5 7.ef5 Nf5 8.Nf3 Be7 9.Bc4 e4 10.Nd4 d5 11.Nf5+=) 6...ed4 7.Bd4 Nf5 8.Nf3 d5 9.Bd3 Bd6 10.0-0 Nd4 11.Nd4+=; B3) 5...d5 6.d4 (6.Nf3 Bd6 7.Nc3 Be6 8.Be2 0-0 9.0-0 Nd7 10.Re1 Nb6 11.d3+=; 6.Be2 Bd6 7.d4 0-0 8.c4 Be6 9.c5 Be7 10.Nf3 e4 11.Nfd2=) 6...ed4 7.Bd4 Nf5 8.Nf3 Bd6 9.c4 Nd4 10.Nd4 Be5 11.f4+=.

4.a3 d5 A) 5.c4 A1) 5...Bg4 6.Qa4 (6.f3 Be6 7.cd5 Qd5 8.d4 ed4 9.Bd4 Qd7 10.Bd3 Nc6 11.Ne2=; 6.Qb3 dc4 7.Bc4 Nc6 8.Bd5 a5 9.b5 a4 10.Qa2 Na5 11.Nc3=; 6.Qc2 Bf5 7.Qa4 Bd7 8.Qb3 dc4 9.Bc4 a5 10.ba5 Ra5 11.Bc3=; 6.Be2 Be6 7.c5 Be7 8.Nf3 0-0 9.0-0 a5 10.d4 e4 11.Nfd2=) 6...Bd7 7.Qb3 Be6 8.d4 ed4 9.ed4 Qe7 10.c5 c6 11.Bd3=; A2) 5...a5 6.Qa4 Bd7 7.b5 dc4 8.Bc4 Nf5 9.d4 ed4 10.ed4 Nd6 11.Bd3=; B) 5.Nf3 B1) 5...Bd6 6.c4 (6.Nc3 Be6 7.Be2 a5 8.b5 0-0 9.0-0 Nd7 10.d3 Qe8 11.Re1+=; 6.Be2 a5 7.b5 0-0 8.0-0 Nd7 9.c4 c6 10.cd5 cd5 11.Nc3=) 6...a5 7.cd5 ab4 8.ab4 Ra1 9.Ba1 0-0 10.Bc3 e4 11.Nd4=; B2) 5...Be6 6.Be2 (6.Bb5 Nd7 7.0-0 Bd6 8.d4 e4 9.Nfd2 Ng4 10.h3 Nh2 11.Re1=; 6.Nc3 Nd7 7.Be2 a5 8.b5 Bd6 9.0-0 0-0 10.Re1 Nb6 11.Qc1+=) 6...a5 7.b5 Bd6 8.0-0 Nd7 9.d4 0-0 10.c4 dc4 11.Nbd2=; B3) 5...Bf5 6.c4 (6.Be2 Bd6 7.Nc3 c6 8.0-0 Qc7 9.Nh4 Be6 10.h3 0-0 11.Nf3+=; 6.Nc3 a5 7.b5 Be7 8.Be2 0-0 9.0-0 Be6 10.Re1 Qd6 11.a4=; 6.Bb5 c6 7.Be2 Bd6 8.0-0 Qc7 9.Nh4 Be6 10.Bh5 g6 11.Be2+=; 6.d4 e4 7.Nfd2 a5 8.b5 Bg4 9.Be2 f5 10.c4 Qg5 11.Bg4+=) 6...a5 7.ba5 Be6 8.d4 dc4 9.Nbd2 e4 10.Ne4 Nc6 11.Be2+=; B4) 5...a5 6.b5 Bd6 7.Nc3 Be6 8.Be2 0-0 9.0-0 Nd7 10.Re1 Nb6 11.d3+=; C) 5.d4 ed4 6.ed4 (6.Bd4 Nf5 7.Bd3 Nc6 8.Ne2 Ncd4 9.ed4 a5 10.b5 Bd6 11.0-0=; 6.Qd4 Bd6 7.Nf3 Nf5 8.Qd1 c6 9.Bd3 Qe7 10.Nd4 Nd4 11.Bd4=) 6...a5 7.b5 Bf5 8.c4 Qe7 9.Qe2 Qe2 10.Be2 dc4 11.Bc4=.

4.c4 Bb4!? 5.a3 Ba5 –/+.

4.c4 d5 5.Qb3 Be6 6.Nc3 c6 (6...d4 7.ed4 Qd4 8.Nf3+=) 7.cd5= cd5 8.b5 (8.e4 Nc6 9.Bb5 a6 10.ed5 ab5 11.de6 Nd4+=) 8...Be7 9.d4 0-0 (9...Nd7 10.Nd5 Nc5 11.dc5 Bd5 12.Qa3=) 10.Nf3 e4 (better is 10...Qd6!?=) 11.Ne4!+/– Nd7 (11...de4 Exploits the pin 12.Qe6) 12.Nc3 Nb6 13.Nd2 (13.Bd3 f5+/–) 13...Qd7 14.Be2 Rac8 15.a4 (15.Ba3 Rfe8+/–) 15...Nc4 (15...f5 16.0-0+=) 16.Nc4+/– dc4 The passed pawn on d4 quickly leads to threats 17.Qd1 f5 18.d5 Bf7 19.0-0 Bd6 20.Ba3 Rfd8 (better is 20...Ba3 21.Ra3 Qd6+/–) 21.Bf3 (better is 21.Bd6!? Qd6 22.Qd4+–) 21...Be5+= Will d5 fall? 22.Rc1 (22.Qc2 Qc7+=) 22...a6 (22...Bc3 23.Rc3 Bd5 24.Bd5 Qd5 25.Qd5 Rd5 26.Rfc1=) 23.d6 Bc3 24.Rc3 ab5 25.ab5 Qb5 26.Qc2 Bd5 27.Rb1 Qc6 28.Bd5 Qd5 29.Rb6 Nf7 30.f3 (30.h3 Ng5 31.f3 Nf7=) 30...Nd6 (better is 30...f4!?+=) 31.Bd6= Rd6 32.Rd6 Qd6 33.Rc4 (worse is 33.Qf5 Qd1 34.Kf2 Qd2 35.Kg3 Rc6–/+ (worse is 35...Qc3 36.Qc8 Kf7 37.Qb7 Ke6 38.h4+/–)) 33...Rc4 (better is 33...Rf8!?=) 34.Qc4+/– Kf8 (34...Kf8 35.Qc8 Ke7 36.Qb7 Kf6 37.Qb2 Kg6+/–) 0–1. Szeligowski – Karnisky,Robert, Boulder Colorado, 1988.

4.Bd3 Nf7 5.Qh5 g6 6.Bg6?? Qe7?? 7.Bf7 Qf7 8.Qf7 Kf7 9.a3 d5 10.d3 Be6 11.Nd2 c5 12.bc5 Bc5 13.Ne2 Nc6 14.Ng3 Rhg8 15.a4 Nb4 16.0-0 Bd6 17.Nb3 Nc2–/+ 18.Rac1 Nb4 19.d4 e4 20.Ba3 Rac8 21.Bb4 Bb4 22.Nc5 Bc5 23.dc5 Rc6 24.h3 Kg6 25.Kh2 Rgc8 26.Ne2 b6 27.Nf4 Kf7 28.Kg3? bc5–+ 29.Rb1 R8c7 30.Rb8 c4 31.Rh8 Kg7 32.Re8 Bf7 33.Rb8 c3 34.Rbb1? c2 35.Rbc1 Rb6 36.Ne2 Rb4 37.Nd4 Ra4 38.Rc2 Rc2 39.Nc2 Rc4 40.Nd4 a5 41.Ra1 a4 42.Nf5 (42.Nf5 Kf8 43.Kf4–/+). wojtekkk – adamamator, internet, 2011.

4.h3 Bb4 5.Bc4 d5 6.Qh5 Nf7 7.Bb3 0-0 8.a3 Bd6 (8...Be7 9.Ne2–/+) 9.e4? (better is 9.Bd5 c6 10.Ba2=+) 9...de4–+ 10.Ne2 Qe7 11.g4 (better is 11.Ng3!?–+) 11...Be6 12.Be6 Qe6 13.Ng3?! (13.Nbc3 Ng5–+) 13...Nd7 (better is 13...g6 14.Qh4 Ng5 15.Kd1–+) 14.Nf5?? (better is 14.Ne4 Nc5 15.Nbc3–+) 14...Ng5 (better is 14...g6 15.Qh4 gf5 16.Nc3–+) 15.h4 (15.Nh4–+) 15...Nf3 16.Kd1 Kh8 17.g5 g6 18.Qh6 gf5 19.g6 Qe7 20.d4 Nd4 21.Bd4 ed4 22.Nd2 Qg7 (23.Qg7 Kg7 24.gh7 Rh8–+) 0–1. slavisa10 – COUNTDOWN2MATE3, Live Game Caissa's Web, 2004.

5.c4 a5 6.b5= (6.ba5 Ra5 7.Bc3 Ra8 8.d4 ed4 9.ed4 Bb7 10.d5 Na6 11.Be2=) 6...Bb7 7.d4 Bd6 8.Qh5 Nf7 9.Nf3 g6 10.Qh3 e4 11.Nfd2+=.

5.c4 Bb7 6.Nc3 (6.d4 a5 7.b5 ed4 8.ed4 Bd6 9.Qh5 Nf7 10.Nf3 0-0 11.Bd3=) 6...a5 7.b5 Bd6 8.Qh5 Nf7 9.d4 ed4 10.ed4 0-0 11.Nf3=.

5.c4 c5 6.Qf3+= (6.Qh5 Nf7 7.Qf3 d5 8.bc5 Be6 9.cd5 Bd5 10.Bb5 Ke7 11.Qg3+=) 6...d5 7.cd5 (7.bc5 Bc5 8.Nc3 Bf5 9.Nd5 Nc6 10.Be2 0-0 11.d3+=) 7...Bg4 8.Qe4 (8.Bb5 Kf7 9.Qe4 Bf5 10.Qh4 a6 11.Be2=) 8...Bf5 (8...Nd7 9.Bb5 Rc8 10.Nc3 Bd6 11.Ba6+=) 9.Qc4 (9.Bb5 Nd7 10.Qh4 Nf7 11.Nc3+/–) 9...cb4 (9...Nf7 10.Nc3 Nd6 11.Qe2+=) 10.ab4 Nd7 (10...Nf7 11.Nc3+=) 11.e4 Rc8 12.Qd3 Bg6 13.Ra7 Bb4 14.f3 0-0?? (better is 14...Bc5+=) 15.Qb5+– Ba5 (15...Bd2 16.Nd2 (16.Kd2?! Nc5+–) 16...Nc5 17.Nc4+–) 16.Rd7 Qe8 17.Ba3 Bb4 (17...Rf7 18.Rf7 Qf7 19.d6+–) 18.Bb4 (18.Rb7 Ba3 19.Qe8 Rfe8 20.Na3 Rb8 21.Rb8 Rb8+–) 18...Rc1 19.Kf2 Rb1 20.Rg7! Kh8 (20...Kg7 21.Bf8) 21.Qb6 (21.Rg6 Qg6 22.Qb6 Ng4 23.Ke2 Nh2 24.Qd6+– (24.Bf8?! Rb6 25.Rh2 Rb1=; worse is 24.Rh2 Qg3 25.Qc7 Qh2 26.Bf8 Qg3+–)) 21...Qa4 (21...Rb4 22.Rh7! Kh7 23.Qb4 f5+–) 22.Rb7 Qd1 23.Ne2 Qe1 24.Ke3 Rb3 (24...f5 25.Bf8 Rb6 26.Rb6+– (26.Bh6? Rb7 27.Bg5 Kg7–+)) 25.d3 Qh4 26.Rb8 (26.Bf8!? Rb6 27.Rb6 Qg5 28.Kf2 f5+–) 26...Rb8 (26...Qg5 27.Kf2 Rb8 28.Qb8 Ng8 29.h4+–) 27.Qb8 Ng8 28.Be1 (better is 28.Qf8+–) 28...Qh6–+ (28...Rb8?? 29.Bh4 Kg7 30.d4+–) 29.f4 (29.Kf2 Rb8 30.Bc3 Rb3–+) 29...Rb8 30.g3 Bh5 31.Nc3 (31.Bd2 Qg7 32.Kf2 Rb2–+) 31...Rc8 (31...Qg7 32.Kf2 Qa7 33.Kg2 Rb2 34.Be2 Be2 35.Ne2 Re2 36.Kh3–+) 32.Nb5?! (32.Be2 Be2 33.Ne2 Qh3 34.fe5 Qh6 35.Kf2 fe5–+) 32...Rc1 (32...Qg7!? 33.h3 Rc1 34.Be2 Be2 35.Ke2 ef4 36.Kd2–+) 33.Bd2 Rb1 34.Nc3 Rb2 (34...f5 35.d4 ed4 36.Kd4 Qb6 37.Kd3–+) 35.Bg2 (35.Be2–+) 35...ef4 36.gf4 Rd2! 37.Kd2 Qf4 38.Kc2 Qf2 39.Kb3 Qg2 40.d6 (40.Ra1–+) 40...Bf7 41.Ka3 Qh1 42.d7 Qa1 43.Kb4 Qb2 44.Kc5 Qc3 45.Kd6 Qd4 (45...Qa3 46.Kc7 Qa7 47.Kc6 Ne7 48.Kb5 Qd7 49.Kc5 Qd3 50.Kb6 Qd6 51.Kb5 Nc8 52.e5 fe5 53.Ka4 Qc5 54.h3 Nb6) 46.Kc7 Qc5 47.Kb8 Qb6 0–1. Inskip,Nathaniel – Grzymek,David, Glorney Cup, Aberdeen SCO, 2004.

5.d4 A) 5...d6 6.Be2 (6.c4 ed4 7.Qh5 g6 8.Qf3 c6 9.Ne2 Nf7 10.Qe4 Be7 11.Nd4+=; 6.Bd3 Bb7 7.e4 ed4 8.Bd4 Qe7 9.Nd2 d5 10.Qh5 Nf7 11.Kf1+=; 6.e4 ed4 7.Qh5 Nf7 8.Bd4 Be6 9.Nf3 a6 10.Bd3 c5 11.Be3=; 6.Nd2 ed4 7.Qh5 g6 8.Qd5 c6 9.Qd4 Bg7 10.Rd1 0-0 11.Ne4+=) 6...Nf7 7.Nf3 e4 8.Nfd2 d5 9.c4 dc4 10.Ne4 b5 11.Nbc3+=; B) 5...ed4 6.Qh5 (6.Bd4 Bb7 7.Nf3 a5 8.ba5 Ra5 9.Bd3 Nc6 10.0-0 Nd4 11.ed4=) 6...Nf7+= 7.Bc4 Qe7 8.Bd4 Nc6 9.Nf3 g6 10.Qh4 Nd4 11.Nd4=.

4.b5 b6 5.Be5 fe5?? (better is 5...d5 6.Bb2 de4+=) 6.Qh5+– 1–0. Buss,Michael – Simelis,John, corr or02–26, 2003.

4.b5 c5 5.f4 ef4 6.Bc4 Ne7 7.Qh5 Ng6 8.Ne2 Bd6 9.0-0 (9.Nbc3+/–) 9...Kf8 (9...Qe7 10.Nf4 Bf4 11.Rf4+/–) 10.g3 (10.Nf4!? Bf4 11.Rf4+/–) 10...fg3+/– 11.hg3 (better is 11.e5 gh2 12.Kh2 Be5 13.Be5 Ne5 14.Qe5+/–) 11...Ne5?? (better is 11...Ke7=) 12.Be5+– Be5 13.Qf7 1–0. Janek – Loppe, internet free game, 2017.

4.b5 d5 =.

4.Bc4 ab4 5.Nf3 Nc6 6.0-0 +=.

4.Bc4 Ne7 5.f4 (5.Qh5 Ng6+=) 5...ef4= 6.Nf3 (6.b5!?=) 6...ab4–/+ 7.0-0 Nbc6 8.Nh4 Ra5 9.d4 Ng6 10.Nf5 d6 11.Qh5 Qd7 12.Nd2 Kd8 13.Nb3 Rf5 14.ef5 Qf5 15.Qe2 d5 16.Bd3 Qg5 17.Rae1 Bd6 18.Bc1 Bg4 19.Qf2 Qh5 20.h3? (better is 20.Bd2!?–/+) 20...f3!–+ 21.Nc5 (21.gf3 Bh3 Deflection) 21...Kc8 22.Re3 (22.Be3 fg2 23.Qg2 Bh3–+) 22...Nd4 23.Nb7 (23.Nb3 Nb3 24.ab3–+) 23...Kb7 24.Ba6 (24.c3 bc3 25.Rd1–+) 24...Ka6 25.Ra3 ba3 26.Qd4 Bd7 (better is 26...fg2 27.Qd3 Ka7 28.Re1 Qh3 29.Qh3 Bh3 30.Kf2–+) 27.Be3 (27.Rf3 Qe5 28.Ra3 Ba3 29.Qd3 Kb7 30.Qb3 Kc8 31.Qa3 Kd8–+) 27...c5 (better is 27...Ra8!? 28.Qd3 Bb5 29.c4 dc4 30.Qd1–+) 28.Qc3 Qh4 (28...Bb5 29.Qa3 Kb6 30.Rb1–+) 29.Rb1 (29.Qa3 Qa4 30.Qd3 Bb5 31.Qd5 Rd8 32.Qf3 Ne5–+) 29...Qa4 (29...Rb8 30.Qa3 Ba4 31.Rd1–+) 30.Qd3 (30.Bc5 Rb8 31.Rb8 Bb8 32.Qf3 Nf4–+) 30...Ka7 (better is 30...Bb5 31.Qd5 Rd8 32.Qf3 Qc2 33.Rb5 Kb5 34.Qb7 Kc4 35.Kh1–+) 31.Qd5 Qc6 32.Qd3 (32.Rd1 Qd5 33.Rd5 Re8 34.Rd6 Re3 35.Rd7 Kb6 36.gf3 Re1 37.Kf2 Ra1 38.Rd6 Kb5–+) 32...Rb8 (32...Bc8 33.Qa3 Ba6 34.Rd1–+) 33.Rd1 (33.Qa3 Qa4 34.Bc5 Bc5 35.Qc5 Ka8 36.Qd5 Bc6 37.Rb8 Kb8 38.Qg8 Kb7 39.Qg7 Ka6–+) 33...Rb6 34.Qa3 Qa4 (34...Kb8 35.g4 f2 36.Kf2–+) 35.Qc3 (35.Qa4 Ba4 36.Rd6 Rd6 37.Bc5 Rb6 38.gf3 Bc2 39.Bb6 Kb6 40.Kf2–+) 35...Qb4 (35...fg2 36.a3 Nf4 37.Kf2 Nh3 38.Ke2 Bg4 39.Kd2–+) 36.Qd3 (36.Qb4 Rb4 37.Rd6 Rb1 38.Kf2–+) 36...fg2 37.Qd5 (37.Qd2 Qc4 38.Qg2 Nf4 39.Bf4 Qf4–+) 37...Ne5 (better is 37...Nf4 38.Qf3 Nh3 39.Kg2–+) 38.Qg2 Bc6 39.Qg7 Rb7 40.Qg3 Nf3 0–1. Cernik,Lukas (2205) – Srba,Milan (2235), CZE–chT2b, 2006.

4.Bc4 g6 5.b5 c6 (5...d6 6.Nc3+-) 6.Nc3+- Ne7 7.Qf3 Bg7 8.Nh3 cb5? (better 8...h5 9.Ba3 Qb6+-) 9.Nb5 d6 (9...Nbc6 10.0-0 Qb6 11.Rab1+-) 10.Ba3 Ra6 11.Ng5!! d5 (11...fg5 12.Qf7 Double attack) 12.ed5 fg5 (12...Nd5 13.Bd5 Qd7 14.Ne6 Re6 15.Be6 Qb5 16.Bc8+-) 13.d6 Nf5 (13...Bf5 14.Qb7 Bf6 15.de7+-) 14.Nc7 Kd7 (14...Qc7 15.dc7 Nd7 16.Ba6 Nd4+-) 15.Be6 1-0. Pierre - GuestBmoa123, internet, 2020.

5.a4 d5 6.ed5 cd5 7.Nf3 Bd6 8.Be2 Ne7 9.0-0 0-0 10.d4 e4 11.Nfd2 f5 (11...Qc7 12.h3=) 12.Re1 (12.c4 Qc7 13.h3 Be6=) 12...Nd7 (12...Qc7 13.h3=) 13.c4 b6 14.cd5 (14.Ba3 Ba3 15.Na3 Bb7=) 14...Nd5 15.Bc4 N7f6 16.Nc3 Be6 17.Qb3 Bb4 18.Nd5 (18.Nf3 A) 18...ef3? 19.Re6 Bc3 20.Rf6 (20.Bc3?! Kh8+=) 20...Rf6 21.Bd5 Kh8 22.Bc3+-; B) 18...Bc3 19.Bc3 h6=) 18...Bd5 19.Bd5 (19.Bc3!?=) 19...Qd5=+ 20.Qd5 (20.Re2!?=+) 20...Nd5-/+ 21.Nc4 (21.Red1-/+) 21...Rac8?? (better 21...Be1 22.Re1 Rac8-+) 22.Rec1=+ f4 23.Ne5 e3 24.fe3 fe3 25.Nf3 (25.Nc6 e2 26.Ba3 Bc3 27.Rc3 Nc3-+) 25...h6 (25...e2 26.Kf2 Rc1 27.Rc1-+) 26.Kf1 (26.Rc8 Rc8 27.Rc1 Re8-+) 26...g5 (26...Rce8 27.Ba3 e2 28.Kf2 e1Q 29.Re1 Re1 30.Re1 Ba3 31.Re6-+) 27.Ke2 (27.Rc8 Rc8 28.Ba3-+) 27...Rce8-+ 28.g3? (28.Kd3 Nf4 29.Kc2 Ng2 30.Ne5-+) 28...g4 29.Ne5 Rf2 30.Kd3 Rb2 31.Ke4 e2 (better 31...Nf6 32.Ke3 Bd2 33.Kd3 Bc1 34.Rc1 Rb3 35.Rc3 Rc3 36.Kc3 Rc8 37.Kd2 h5-+) 32.Kd5 Rd2 (better 32...Bd2 33.Rh1 Rb4-+) 33.Re1?? (better 33.Kc4-/+) 33...Rd8 (33...Bc3!? 34.Re2 Rd4 35.Kc6 Ba1 36.Ra2-+) 34.Ke4 (34.Kc6 Rc2 35.Kb6 Rd4-+ (worse 35...Be1 36.Re1 Rd4 37.Ka5-+)) 34...R8d4 (34...R2d4!? 35.Ke3 Bc3 36.Rab1-+) 35.Kf5 (35.Ke3-+) 35...Rc2 36.Ng4 (36.Nc6 Rc5 37.Ke6 Re4 38.Kd6 Be1 39.Re1 Kf7-+) 36...Be1 37.Re1 Rd1 38.Nf6 (38.Re2 Re2 39.Nh6 Kh7 40.Kg5-+) 38...Kf7 39.Re2 Re2 40.Ng4 (40.Nh5 Rd5 41.Kg4 Rh2-+) 40...Rd5 (40...Rf1 41.Nf2 Rff2 42.Kg4 Kg6 43.Kh4 Rh2 44.Kg4 h5 45.Kf4 Rhf2) 41.Kf4-+ Rd4 (41...Ra2!? 42.Ke3-+) 42.Kf3 Rg4 (42...Ra2 43.Ne5 Ke6 44.Ng6-+) 43.Ke2 (43.Kg4 Rh2 44.Kf5 Rf2 45.Ke5 Ra2-+) 43...Ra4 44.Kf3 (44.Kd3 Rb4 45.Kc3-+) 44...Rb4 45.h4 Rb5 46.Kg4 Rc5 47.Kh3 a4 48.h5 a3 49.Kh4 (49.Kg2 a2 50.g4 a1Q 51.g5 Rc2 52.Kf3 Qa3 53.Kg4 Rc4 54.Kf5 Qc5) 49...a2 50.g4 (50.Kg4 a1Q 51.Kf3 Rc3 52.Kg2 Qa2 53.Kh3 Qf2 54.Kg4 Rg3 55.Kh4 Qf4) 50...Rg5 (50...a1Q 51.Kg3 Rc3 52.Kf4 Ke6 53.g5 Qa4) 51.Kg3 (51.Kh3 a1Q 52.Kg3 Qf1 53.Kh2 Qe2 54.Kh1 Qg4 55.Kh2 Qh5) 51...a1Q 52.Kf4 (52.Kg2 Qf6 53.Kg3 Qf5 54.Kh2 Rg4 55.Kh1 Qh5) 52...Qe5 (52...Qf1 53.Ke3 Rd5 54.Ke4 Qd3 55.Kf4 Rd4 56.Ke5 Qe4) 53.Kf3 Qd4 (53...Qe1 54.Kg2 Qe2 55.Kh1 Qg4 56.Kh2 Qh5) 54.Ke2 (54.Kg3 Rg4 55.Kf3 Qe4 56.Kf2 Rg2 57.Kf1 Qe2) 54...Rg4 55.Kf1 Rg1 (55...Qe4 56.Kf2 Rg2 57.Kf1 Qe2) 56.Ke2 Rg2 57.Kf3 Rf2 58.Kg3 Qf4 59.Kh3 Rh2 0-1. BeepBeepImAJeep (2735) - MnIgraqLek (2630), lichess.org, 2020.

5.Nc3 Bc5 6.Bc4+– (6.Qh5 g6 (6...Kf8 7.Bc4 Qe8 8.Qf3 Nh6 9.Nge2 d6 10.0-0 Bg4 11.Qd3 Be6) 7.Qh4 Ne7 8.Na4 Ba7 9.Ba3 cb5 10.Bb5 0-0 11.Nf3 Na6) 6...Ne7 7.Qh5 Ng6 (7...g6 8.Qf3 d6 9.Nge2 Nd7 10.bc6 Nc6 11.a4 Nb6) 8.Nf3 (8.Nge2 Kf8+– 9.0-0 d6 10.Rad1 Nd7 11.Bb3 cb5) 8...Kf8 9.g3 (9.0-0 d6+– 10.Na4 cb5 11.Nh4 bc4) 9...d6 (9...Qe8 10.0-0 Ne7 11.Qe8 Ke8 12.Na4) 10.Nh4 (10.Rd1 Qd7+/– (10...Qe8 11.0-0 Ne7) 11.0-0 Qg4) 10...Qe8+/– 11.Nf5 Be6 (11...Bd7+/–) 12.Be6 Qe6 13.0-0 Nd7 14.a4 (14.bc6 bc6 15.Rfb1 Ne7+=) 14...Ne7 15.Rfd1 (15.Rfb1 d5+=) 15...Nf5+= 16.ef5 (worse is 16.Qf5 Qf5 17.ef5 d5+=) 16...Qc4 17.d3 Qb4 (17...Qf7!? 18.Qg4 d5+=) 18.Rdb1+/– Nb6?? (better is 18...Bd4 19.Ne4 Bb2+–) 19.Ne4+– Rd8 (19...Nd5 20.c4 Qb3 21.bc6 Qd3 22.Nc5 dc5 23.cd5 Qd5 24.cb7 Qb7 25.Be5 Qe7+–) 20.Bc3 Qa4 (20...Qc3 21.Nc3 d5 22.Ne2+–) 21.Ra4 Na4 22.bc6 Nc3 (22...b6 23.Ba5! Ke7+–) 23.Rb7 g6 (23...Ne2 24.Kg2 Nf4 25.gf4 Rd7 26.Rd7 g6 27.Qh6 Ke8 28.Nf6) 24.Qh6 Ke8 (24...Kg8 25.Nf6) 25.Nf6 1–0. mrkt – szubiszubi, internet, 2011.

5.Nc3 d5!? 6.bc6 bc6+/– 7.Nf3 Ne7 8.d4 Nd7 9.Rb1 Kf7 10.Be2 Bb7 11.Ba3 Qc7.

5.Nc3 d5!? 6.Bd3 Ne7 (6...de4 7.Ne4 f5 8.Nc3 Nf6 9.Qe2 e4 10.Nh3 Nbd7 11.Bc4 Ne5; 6...Bb4 7.bc6 Bc3 8.c7 Qc7 9.Bc3 d4 10.Bb2 Nc6 11.Ne2 Nge7) 7.Qh5 g6 8.Qh4 Nd7 9.Nf3 Kf7 10.0-0 Nc5 11.bc6 bc6.

5.Nc3 d5!? 6.d4 Bb4 7.a3 Bc3 8.Bc3 ed4 9.Qd4 Ne7 10.Nf3 0-0 11.Rd1 Qd6.

5.Nc3 d5 6.d4 ed4 7.Qd4 de4 8.Qe4 (8.Qd8 Kd8 9.Rd1 Kc7 10.Ne4 Bf5=) 8...Qe7 9.Nf3 (9.0-0-0 Qe4 10.Ne4 Be6+=) 9...Qe4 (9...Bg4 10.Nd4+=) 10.Ne4 Be6 11.Nd4 (11.Bd3 Nd7+=) 11...Bd5 12.0-0-0 (12.Nc3 Bb4 13.Nf5+=) 12...Be4 (better 12...Ba2!? 13.c4 Kf7+=) 13.Re1+- f5 (13...Kd7!? 14.Re4 Ne7+-) 14.Nf5+- Nf6 15.Bf6 gf6 16.Re4 Kf7 (16...Kd7 17.c4+-) 17.Bc4 Kg6 18.Nh4 (better 18.Ne7 Be7 19.Re7 cb5 20.Bd3 Kh6 21.Rb7+-) 18...Kh5?? (better 18...Kg5+-) 19.Be2 Kh6 (19...Kg5 20.Rg4 Kh5 21.Rg8 Kh4 22.g3 Kh3 23.Bf1) 20.Rg4 Ba3 21.Kb1 Re8 (21...Kh5 22.Rg8 Kh4 23.g3 Kh3 24.Bf1) 22.Nf5 Kh5 23.Rg7 Re2 24.g4 1-0. Kamilsson – Pointer, internet, 2020.

5.Nc3 d5!? 6.d4 de4 7.Ne4 f5 8.Nc5 e4 9.Bc4 b6 10.Nb3 Qe7 11.Bc3 Nf6.

5.Nc3 d5!? 6.d4 Qe7 7.bc6 de4 8.Nd5 Qd8 9.de5 Bb4 10.Nb4 Qd1 11.Rd1 ab4.

5.c4 d5 6.cd5 cd5 7.ed5 Qd5 8.Nc3 Qd8 9.a4 (9.Bc4 Bf5+=) 9...Bc5 10.Nf3 Ne7 11.Be2 0-0 (11...Bf5 12.Rc1=) 12.0-0 b6 (12...Bf5 13.Rc1=) 13.Qb3 (13.Bc4 Kh8+=) 13...Kh8 14.Rad1 Bb7 15.d4 ed4 16.Nb1 Nf5 17.Bd3 (better 17.Bc4!?=) 17...Bf3-/+ 18.gf3 Qd7 (18...Nh4 19.f4-/+) 19.Be4 Ra7 20.Kh1 (20.Rfe1 Ne7-/+) 20...g6 (20...Ne7 21.Nd2-/+) 21.Rg1 Qc8 (21...Rd8 22.Nd2-/+) 22.Nd2 (22.Na3 Rc7=+) 22...Re7 (22...Rd8 23.Qd3 Ng7 24.f4-/+) 23.Nc4 Nd7 (23...Qe6 24.Bf5 Qf5 25.Bd4=+) 24.Qd3 (better 24.Bf5 gf5 25.Bd4 Bd4 26.Rd4+=) 24...Ne5-/+ 25.Ne5 fe5 26.f4 ef4 27.Bf5 Qf5 (worse 27...gf5 28.Bd4 Rg7 29.Bg7 Kg8 30.Qd5 Rf7 31.Bf6 Kf8 32.Qd8 Qd8 33.Rd8) 28.Bd4 Kg8 (28...Bd4 29.Qd4 Qf6 30.f3-/+) 29.Qf5 (29.Qb3 Qf7 30.Qf3 Rfe8-/+) 29...Rf5 30.Bc5 Rc5 31.Rd4 Rf7 (31...f3 32.h3-/+) 32.Rgd1 Rcf5 (32...f3 33.h3-/+) 33.Kg2 (33.Rd6 R5f6=+) 33...Kg7 (33...f3 34.Kg3-/+) 34.h4 Kh6 (34...Rh5 35.Rh1=+) 35.Kf3 (35.Rd6 R5f6=) 35...Kh5 36.Rd6 R7f6 (better 36...Rb7=+) 37.R1d4? (better 37.Rc6!?=) 37...Kh4-/+ 38.Rf6 (38.Rc6 g5 39.Rdd6 g4 40.Ke4 Rf7 41.Rb6 f3-+) 38...Rf6-+ 39.Rd1 Kg5 40.Rd5 Kh6 (40...Rf5 41.Rd6 Rc5 42.Rb6 Rc3 43.Ke4 Rc4 44.Kd5 Ra4 45.Ra6-+) 41.Rd7 (better 41.Re5!?-/+) 41...g5-+ 42.Rb7 (42.Rc7 Kg6-+) 42...Kg6 43.Kg2 (43.Ke4 h5-+) 43...h5 44.f3 (44.Rb8 g4-+) 44...g4 45.Kf2 (45.Rd7 Re6-+) 45...Kg5 (45...g3 46.Kg2-+) 46.Kg2 Kh4 (46...Rd6 47.fg4 hg4 48.Rg7 Kf5 49.Rf7 Ke4 50.Re7 Kd3 51.Rb7-+) 47.Rg7 (47.Rd7 Re6 48.Rd4 Re2 49.Kf1 Ra2 50.Rf4 Kg3-+) 47...Rd6 48.fg4 hg4 49.Rh7 Kg5 50.Rg7 Kf5 51.Rf7 Ke4 52.Re7 Kd3 53.Rg7 (53.Rb7 Kc3 54.Rf7 Rd2 55.Kf1 g3-+) 53...g3 54.Kf3 Rd4 55.Rf7 (55.Rb7 Ra4 56.Rb6 Kc4-+) 55...Ra4 56.Rf6 (56.Rg7 Rb4-+) 56...Rd4 (56...Ra1!? 57.Rb6 Rf1 58.Kg2 Rf2 59.Kg1-+) 57.Rb6 a4 (better 57...Kc4!? 58.Rb7-+) 58.Ra6 Kc3 59.b6 (59.Ra8 Rb4 60.b6 Kb3-+ (worse 60...Rb6 61.Ra4 Rb4 62.Ra3 Kb2 63.Ra7-+)) 59...Rb4 (better 59...Rd3 60.Kg2 Rd2 61.Kf3 g2-+) 60.b7 Rb7 Deflection from a4 (better 60...Kb3!? 61.Rg6 Kb2 62.Rd6 Rb7 63.Kf4-+) 61.Ra4 Rb4 62.Ra3 Kc4 (62...Kb2 63.Ra8-+) 63.Ra5?? (63.Kf4 g2 64.Rg3 Rb2=) 63...Rb5 (better 63...Kb3-+) 64.Ra4= Rb4 65.Ra1?? (better 65.Ra5=) 65...Kb3-+ 66.Rf1 (66.Ra8 Rd4-+) 66...Ka4 (66...Ka2 67.Rd1-+) 67.Kg4 Kb5 68.Rf3 (68.Rc1 Rc4 69.Rb1 Kc5-+) 68...Kc5 (68...g2 69.Kf5 g1Q 70.Rf4 Qc5 71.Kg4 Qc8 72.Kg5 Qc1 73.Kg6 Qf4 74.Kg7 Qe5 75.Kf7 Rf4 76.Kg6 Rf6 77.Kh7 Qe7 78.Kg8 Rf8) 69.Rc3 (69.Rf1 Rd4-+) 69...Rc4 (69...Kd4 70.Rc2 Ke3 71.Rc3 Kd2 72.Ra3-+) 70.Rd3 (70.Ra3 Rc1 71.Ra2 Rf1-+) 70...Rd4 (70...Rc1 71.Rd2 Rf1 72.Kh3 Rh1 73.Kg4-+) 71.Rc3 Kd5 72.Ra3 (72.Rc8 Ke4 73.Re8 Kd3-+) 72...Ke4 73.Ra5 (73.Ra2 Ke3 74.Ra3 Ke2-+) 73...Ke3 (73...g2 74.Ra1 Rd3 75.Ra4 Ke3 76.Ra1-+) 74.Re5 (74.Re5 Kf2 75.Rb5 f3 76.Kh3-+; 74.Ra3 Rd3 75.Ra2-+) 1-0. BeepBeepImAJeep (2785) - MnIgraqLek (2765), lichess.org, 2020.

5.Qh5 g6 6.Qh4 Bg7 (6...d5 7.f4 ef4 8.Qf4=) 7.f4 d6 8.Nf3 Ne7 9.Bc4 cb5 (9...d5 10.fe5 fe5 11.Be2+=) 10.Bb5+= Nbc6 11.Nc3 Be6 12.0-0-0 (12.fe5 de5 13.Ba3 0-0+=) 12...a4 (better 12...0-0!?=) 13.d4+/- a3 14.Ba1 ed4 (14...Bd7 15.de5 de5 16.Bc4+=) 15.Nd4+/- Qb6?? (better 15...Bd7+/-) 16.Ne6+- Kf7 17.e5 (better 17.Ng7!? Ng8 18.Ne6 Nb4+-) 17...Ke6 (17...Qe3 18.Kb1 Nf5+-) 18.Bc4 d5 (18...Kd7 19.Rd6 Kc8 20.ef6 Qe3 21.Kb1 Bf8 22.fe7 Be7 23.Qg4 Kb8+-) 19.Nd5 Nd5 20.Rd5 g5 (20...Qb4 21.f5! Kf7 22.Ra5 Ke7 23.ef6 Kd7 24.fg7 Qa5 25.Be6 Kc7 26.gh8R Rh8 27.Bh8 gf5 28.Qh7 Kb8 29.Qf5 Qf5 30.Bf5 Kc7+-) 21.Qh3 (21.Qg4 Ke7 22.Rd7 Kf8 23.Rf7 Ke8 24.Qd7) 21...Ke7 22.Qd7 (22.Rd7 Kf8 23.Rf7 Ke8 24.Qd7) 22...Kf8+- 23.ef6 Qe3 24.Kb1 (24.Rd2 Qe1 25.Re1 Bf6 26.Qf7) 24...Rg8 (24...Qb6 25.Rb5 Qb5 26.Kc1 Qb2 27.Bb2 ab2 28.Kb1 Ra2 29.fg7) 25.Re5 (25.fg7 Rg7 26.Rf5 Rf7 27.Qf7) 25...Qb6 26.Rb5 (26.Rb5 Qb5 27.Bb5 Bf6 28.Bf6 Rd8 29.Qh7 Re8 30.Bc4 Re6 31.Be6 Rg7 32.Qg7 Ke8 33.Qf7; 26.Kc1 Qb2 27.Bb2 ab2 28.Kb1 Ne5 29.Qe7) 1-0. jhonores (2175) - chesskulkarni (2160), Hourly SuperBlitz Arena, lichess.org, 2020.

5.c4 a5 6.cb5 (6.Nf3 ab4 7.cb5 Bb7 8.Qc2 d5 9.ed5 Nd7 10.ab4 Ra1 11.Ba1 Bd6) 6...ab4 7.Nf3 Bb7 8.Bd3 d5 9.ed5 Qd5 10.Qc2 Nd7 11.ab4 Ra1.

5.c4 bc4 6.Bc4 d6 (6...Bb7 7.Nc3+= (7.Bg8 Rg8 8.Qh5 g6 9.Qh7 Rg7 10.Qh4 d5+=; 7.Qh5 g6 8.Qf3 Bg7 9.Ne2 f5 10.Nbc3 Nf6+=) 7...a5 8.b5 c6 9.Rc1 Nh6 10.d4 ed4+/–; 6...a5 7.b5 (7.d4 Bb7 8.de5 Be4 9.f3 Bb7 10.ba5 Nc6+=; 7.Nf3 Ne7 8.d4 ed4 9.Nd4 Bb7 10.Qb3 Qc8+/–; 7.ba5 Ba6 8.Bg8 Rg8 9.Qh5 g6 10.Qh7 Rg7+=) 7...Bb7 8.Nc3 c6 9.Rc1 Nh6 10.d4 ed4+/–; 6...Ne7 7.Qh5 (7.Qb3 d5 8.ed5 a5 9.d4 e4 10.f3 ef3+/–; 7.Nc3 Ng6 8.Nf3 Nc6 9.0-0 Rb8 10.Qb3 Bc5+/–; 7.f4 d6 8.Qh5 g6 9.Qf3 Nd7 10.Ne2 Bg7+=) 7...g6 8.Qf3 Nec6 9.Ne2 Bb7 10.0-0 Bg7+/–) 7.Nf3 (7.d4 c6 8.Nc3 Nd7 9.Nf3 Nb6 10.Be2 Ne7+/–; 7.Nc3 Nd7 8.d4 ed4 9.Qd4 Ne7 10.Nf3 Ne5+/–; 7.Ne2 Nd7 8.d4 Nb6 9.Bb3 c5 10.dc5 dc5+/–) 7...Bb7 (7...a5 8.b5 c6 9.Nc3 f5 10.Qe2 fe4+/–) 8.Nc3 Nh6 (8...a5 9.ba5 Ba6 10.Ba6 Ra6+/–) 9.0-0 (9.d4 Nd7 10.Bc1 Nb6+/–) 9...Qd7 (9...f5 10.ef5 Nf5 11.Be6+/–) 10.Qb3 (10.d4 Be7+– (10...c6+–)) 10...g5 (10...f5 11.Rfe1+/–) 11.Be6 Qe7 12.Nd5 Qg7 13.h3 (13.d4 g4 14.Nd2 c6+–) 13...c6 14.Nb6 Ra7 15.d4 Qc7 16.de5 Qb6? (better is 16...de5 17.Nc4 Nd7+–) 17.ef6 (17.ef6 Ba8 18.Ng5+–) 1–0. Janek – Vesely, internet, 2016.

5.c4 c6 6.Nc3 Qc7 (6...Ne7 7.Nf3 d5 8.ed5 cd5 9.cb5 Bb7 10.Rc1 d4 11.Na4 Nd5; 6...a5 7.ba5 bc4 8.Bc4 Ba6 9.Bb3 Qa5 10.Nge2 Bd3 11.Nc1 Ba6) 7.Nf3 c5 (7...a5!?+= 8.ba5 b4 9.ab4 Bb4 10.Be2 Ra5 11.Ra5 Qa5; 7...Nh6 8.Be2 a5 9.cb5 ab4 10.ab4 Ra1 11.Ba1 Bb7) 8.Nd5 (8.cb5 ab5 9.Nb5 Qc6 10.Qc2 Na6 11.Bc4 Bb7) 8...Qa7 (8...Qb7 9.Qc2 d6 10.bc5 dc5 11.cb5 Ne7) 9.Nh4 cb4?? (better is 9...Kd8 10.cb5 (10.Qh5 Ne7 11.Ne7 Ke7) 10...ab5 11.Bb5 (11.Nf5 g6) 11...Ne7+– 2.27 (11...Qb7+/–); 9...Ne7 10.Qh5 Kd8 11.Ne7 Ke7) 10.Qh5 (10.ab4?! Ne7 11.Qh5 Kd8 12.Ne7 Be7+–) 10...Kd8 11.Ng6! (11.Ng6 ba3 12.Bc3+–; 11.ab4?! d6+–) 1–0. pereira – naser, internet, 2011.

5.Be5 A) 5...Bb7 A1) 6.Bg3 Be4 (6...Nc6 7.Nc3 Bd6 8.Qg4 Kf7 9.Bd6 cd6 10.Nf3 Ne5 11.Qg3 Ne7; 6...Bd6 7.Qg4 Kf7 8.Bd6 cd6 9.Nf3 Nc6 10.Nc3 Ne5 11.Qg3 Ne7; 6...Ne7 7.Nc3 Nbc6 8.Nf3 Ng6 9.Nd5 Nce5 10.Ne5 fe5 11.c3 c6; 6...Kf7 7.Nc3 Nc6 8.Nf3 Bd6 9.Bd3 Nge7 10.Qb1 g6 11.0-0 Kg7) 7.Nc3 Bg6 8.Nf3 Nc6 9.Bd3 Bd6 10.0-0 Nge7 11.Bg6 hg6; A2) 6.Bf4 Ne7 (6...Nc6 7.Nc3 Bd6 8.Bd6 cd6 9.Qg4 Kf7 10.Nf3 Ne5 11.Ne5 fe5; 6...Be4 7.Nc3 Bg6 8.Bd3 Bd6 9.Bd6 cd6 10.Bg6 hg6 11.a4 Nc6) 7.Nc3 Nbc6 8.Bd3 Kf7 9.Nh3 h5 10.Qb1 Nd4 11.0-0 Ne6; B) 5...Ne7 6.Bf4 Nbc6 (6...Kf7 7.Nc3 Nbc6 8.Bd3 Bb7 9.Nh3 Kg8 10.0-0 Ng6 11.Qb1 Nf4; 6...d6 7.Nc3 Nbc6 8.a4 ba4 9.Ra4 Be6 10.Nh3 Ng6 11.Be3 Nce5; 6...d5 7.Nc3 de4 8.Ne4 Kf7 9.Bd3 Nbc6 10.Ne2 Nd5 11.0-0 Be7; 6...Bb7 7.Nc3 Nbc6 8.Bd3 Ne5 9.Be5 fe5 10.Qh5 Ng6 11.Nf3 Bd6) 7.Nc3 Kf7 8.Bd3 d6 9.Nf3 Ng6 10.Be3 Nge5 11.Ne5 Ne5; C) 5...Nc6 6.Bf4 Bd6 (6...Bb7 7.Nc3 Bd6 8.Bd6 cd6 9.Qg4 Kf7 10.Nf3 Ne5 11.Qg3 Ne7) 7.Bd6 cd6 8.c4 f5 9.Nc3 Nf6 10.cb5 ab5 11.ef5 Qe7; D) 5...d5 6.Bf4 (6.Nc3 fe5 7.Qh5 Kd7 8.Nf3 c6 9.Ne5 Kc7 10.Nf7 Qe8 11.Qf3 Nf6) 6...Ne7 (6...de4 7.Nc3 f5 8.a4 Bb4 9.ab5 Nf6 10.Nh3 c6 11.Be2 Bc3) 7.Nc3 de4 8.Ne4 Kf7 9.Bd3 Nbc6 10.Ne2 Nd5 11.0-0 Be7.

5.Bc4 Nge7 6.Ne2 (6.Nc3 b5 7.Ba2 Bb7+=) 6...d5= 7.ed5 Nd5 8.0-0 Be6 9.d3 (9.d4 Nc3 10.Nbc3 Bc4 11.de5 fe5=) 9...Bd6 (9...Be7 10.Re1=) 10.Nd2 (better is 10.Nbc3 Nc3 11.Nc3 Bc4 12.dc4=) 10...Qe7 (10...0-0 11.Nc3 Nf4 12.Be6 Ne6 13.Nd5=) 11.Ne4 (better is 11.Bd5!? Bd5 12.c4+/–) 11...b5 (11...Qd7 12.Nd6 cd6 13.Bb3=) 12.Nd6 (12.Bb3 Nb6=) 12...Qd6 13.Ba2 0-0 14.Qd2 (14.c4 Nde7=) 14...Nce7 (14...a5 15.Nc3 ab4 16.Nb5=) 15.Rfe1 Nf5 (15...Ng6 16.Rad1=) 16.Rad1 (16.d4 Nb6 17.Qd3 Ba2 18.Qf5=) 16...Rac8 (16...Rad8 17.d4 Nde7 18.c4 bc4 19.Qc2+=) 17.Nc3 (better is 17.d4!? e4 18.Nc1+/–) 17...Nc3= 18.Be6 Qe6 19.Qc3 (19.Bc3 Rcd8=) 19...Rcd8 (19...Qd5 20.Qd2=) 20.Re4 Rc8 (20...Rd6 21.f4 (21.Qc7? Rc6 22.Qa7 Rc2–+) 21...Rc6 22.Qd2+=) 21.Ra1 (better is 21.f4 Qb6 22.Kh1=) 21...Nd4?? (better is 21...c5 22.Rc1 c4+=) 22.Qd4!!+– ed4 (22...c5 23.bc5 Qc6 24.Qb4+–) 23.Re6 c6 (23...c5 24.Ra6 Rfd8 25.bc5 Rc5 26.Rc1+–) 24.Bd4 Kf7 25.Rae1 Rcd8 (25...Rfe8 26.Re8 Re8 27.Re8 Ke8 28.c3+–) 26.Re7 Kg8 (26...Kg6 27.Bb6 Rd5+–) 27.Kf1 (better is 27.Bc5 Rc8 28.f4+–) 27...Rd4 28.Rc7 Rd6 (28...Ra8 29.Ree7 Rg4 30.Rc6+–) 29.Ree7 (29.Ree7 Ra8 30.Rg7 Kh8 31.Rh7 Kg8 32.Rcg7 Kf8 33.h4+–) 1–0. jaddwarrior (1635) – mfchef54, ChessWorld.net, 2015.

5.Nf3 d5 6.ed5 Qd5 7.Nc3 Qf7 8.Bd3 (8.d4 Bg4 9.de5 fe5+=) 8...Bg4 (8...Nge7 9.0-0=) 9.Ng5 (9.0-0 Nge7+=) 9...Qh5= 10.f3 Bd7 11.Nge4 0-0-0 12.0-0 Nh6 (12...f5 13.Nc5 Bc5 14.bc5=) 13.Ng3 (13.Rb1 Qf7+=) 13...Qh4 (13...Qf7 14.Qe2+=) 14.Re1 Bd6 (14...Be6 15.Na4+=) 15.Nce4 Be6 (15...Nf7 16.Qe2+/–) 16.Nd6 Rd6 17.Bc3 (better is 17.Ne4 Rdd8 18.Bc3+/–) 17...g6? (better is 17...f5!?+/–) 18.Ne4+– Rd7 (better is 18...Rdd8+–) 19.a4 f5 (19...Nd4 20.b5 a5+–) 20.Nc5 Rd6 (20...Rd3 21.cd3 (21.Ne6?! Rd6 22.b5 Re6 23.bc6 Rc6+=) 21...Nd4 22.Re5+–) 21.b5 b6 (21...Bd5 22.Qe2 Re8 23.bc6 Rc6 24.Na6 e4+–) 22.Ne6 Re6 23.bc6 Rhe8 (23...Nf7 24.Ba6 Kb8 25.a5 Rc6 26.ab6 Rb6 27.Qb1+–) 24.Ba6 Kb8 25.a5 e4 (25...Rc6 26.Bb5 Rc3 27.dc3+–) 26.Ra4 Qg5 (26...Rc6 27.Bb5 Qe7+–) 27.ab6 cb6 28.fe4 (28.Qb1 Qd8 29.Bb7 R8e7 30.Ra8 Kc7 31.Rd8 Kd8 32.Qb6 Ke8 33.c7 Kf7 34.Bd5 g5 35.c8Q Kg6 36.Qbe6 Re6 37.Qe6 Kh5 38.Qe8 Kh4 39.g3 Kh3 40.Qh5) 28...fe4 29.Bb7 e3 (29...Kc7+–) 30.de3 Rd8 31.Be5! Re5 (31...Re5 32.Qd6 Mate attack; 31...Qe5 32.Qd8 Mate attack) 32.Qd6! Rd6 (32...Rd6 33.Ra8 Mate attack) 33.Ra8 Kc7 34.Rc8 1–0. pierre – porfirio, internet, 2010.

5.Nf3 d6 6.c4 Bd7 7.d4+= ed4 8.Nd4 Nd4 9.Bd4 Bc6 10.Bd3+/– Ne7 11.0-0 Ng6 12.Nc3 Bd7 13.f4 Be7 14.Qh5+– Be6? 15.f5 Bf7 16.fg6 Bg6 17.Qf3 0-0 18.Nd5 Qd7 19.Rac1 Rac8 20.h3 Qa4 21.Ne7 (21.Ne7 Kh8 22.Nc8 Rc8 23.Bf6+–) 1–0. inspector (2330) – alwayslosing (1945), net–chess.com, 2008.

5.Nf3 d6 6.Bc4 Nge7 7.d4 Bg4 8.de5 fe5 9.0-0 Ng6 10.Nbd2 Qf6= 11.b5 ab5 12.Bb5 Rd8 13.Bc6 bc6 14.c4 Be7 15.Qb3 c5 16.Qb7 Nh4 17.Nh4+= Qh4 18.Qc7 Bg5 19.Qg7 Rf8 20.Bc3?? Rf7–+ 21.g3 Qh5 (21...Qh5 22.Qg8 Ke7 23.Qd8 Kd8 24.Ba5 Kd7–+; 21...Rg7?! 22.gh4 Bd2 23.Bd2 Bf3 24.Bg5–/+) 0–1. chessdeviant – nerob (2015), net–chess.com, 2005.

5.ed5 Qd5 6.Nc3 Qd8 7.Bc4 Nc6 8.Nf3 (8.Nge2 Bd6+=) 8...Nd4 (8...Bg4 9.Nd5=) 9.Nd4+= (9.Nd4 Qd4 10.d3+=) 1–0. michaelbuss (2790) – enihgil, ChessWorld.net, 2011.

5.ed5 Qd5 6.c4 Qf7 7.Nf3 Be6 8.d4 Bc4 (8...ed4 9.Nd4 Bc4 10.Bc4 Qc4 11.Qh5 Qf7 12.Qf3+=) 9.Bc4+= Qc4 10.de5 Nd7 11.Nbd2 Qe6 12.0-0 0-0-0 13.Re1 Nh6 (13...Ne5!? 14.Ne5 fe5 15.Be5 Qg6+-) 14.Rc1+- Ng4? (better 14...fe5 15.Ne5 Qd5+-) 15.Nd4 Qd5 (15...Qa2 16.Qc2 Nc5+-) 16.Qg4 fe5 17.Ne6 Nf6 18.Qf5 (worse 18.Rc7 Kb8 19.Qc4 Qd2+-) 18...Rd7 19.Nc7 Qd2 20.Na6 Kd8 21.Be5 Be7 (21...Nd5 22.Bf6! Ne7 23.Be7 Be7+-) 22.Bf6 gf6 23.Nc5 Bc5 24.Qc5 Re8 Do you see the mate threat? 25.Qc8 1-0. Jan_Ek – Radion, internet, 2020.

4.c3 Bf8 5.Qb3 (5.Bc4 c6 6.Qb3 Nh6 7.Nf3 f5 8.Qc2–/+; 5.Qh5 g6 6.Qf3 d6 7.d4 Nh6 8.Nd2+=; 5.d4 d5 6.de5 de4 7.Qd8 Kd8 8.Nd2+=) 5...Nc6 6.d4 Nh6 7.Nf3 ed4 8.cd4+=.

4.Nc3 Bc3 5.Bc3 d5 6.Qh5 g6 7.Qf3 d4 8.Bb2–/+.

4.Nc3 c6 5.Qh5 (5.Qg4 g6 6.Qf3 d6 7.Nge2 Be6 8.d4–/+; 5.Bc4 Bc3 6.dc3 Ne7 7.Ba3 d5 8.Be7–/+; 5.a3 Bc5 6.Na4 Bf8 7.d4 Qa5 8.Nc3–/+) 5...g6 6.Qf3 d6 7.a3 Ba5 8.Bc4+=.

4.Nc3 Nc6 5.Bc4 (5.Qg4 g6 6.Nd5 Bc5 7.Qd1 Nce7 8.d4–/+; 5.Nd5 d6 6.c3 Ba5 7.Bb5 a6 8.Bc6+=; 5.a3 Bc3 6.Bc3 d5 7.Bb5 de4 8.Bc6–/+; 5.Qh5 g6 6.Qe2 Nge7 7.Rb1 d5 8.Qf3–/+) 5...Nge7 6.Qh5 g6 7.Qh6 Na5 8.Bf1+=.

4.Nc3 d6 5.Bc4 (5.a3 Bc3 6.Bc3 d5 7.ed5 Qd5 8.Qh5+=; 5.Nf3 Ne7 6.Bc4 c6 7.a3 Bc3 8.Bc3–/+; 5.Rb1 Ne7 6.a3 Bc3 7.Bc3 0-0 8.Bc4–/+; 5.Nd5 Bc5 6.c3 c6 7.d4 Bd4 8.cd4–/+) 5...Ne7 6.Qh5 g6 7.Qf3 f5 8.ef5+=.

4.c4 Nc6 5.Nf3 Nge7 6.Nc3 d6 7.Nd5 Ba5 8.Bd3 0-0 9.0-0 Bg4 10.Be2 Rb8 11.Nh4 Bd7 12.Nf5 Nf5–+ 13.ef5 Bf5 14.Bg4 Bg4 15.Qg4 Bd2 16.Rad1 Ba5 17.Ne3 Qc8 18.Nf5 g6 19.Nh6 Kh8 20.Qh4 b5 21.Ng4 g5 22.Qh6 Qg4 23.h3 Qc4 24.Rfe1 Be1 25.Re1 Qa2 26.Bc1 b4 27.f4 gf4 28.Bf4 ef4 29.Re6 Qe6 (29...Qe6 30.Qf4 Qe1 31.Kh2 Qe5–+) 0–1. Administrator – GNUChess, 2000.

4.c4 d6 5.Nf3 c6 6.Bd3 Be6 7.0-0 g5 8.Nc3 h5 9.a3 Bc5 10.Na4 Na6 11.Nc5 Nc5 12.Bc2 Qd7 13.d4= Bc4 14.dc5 Bf1 15.Kf1 d5 16.ed5+/– cd5?? 17.Bg6 Ke7+= 18.Qe2 Qe6 19.Re1 Rh6? 20.Bb1 Kf7 21.Qb5 Qc8 22.Ba2 Ne7 23.Ne5 fe5 24.Re5 a6 25.Rg5?? ab5–+ 26.Rg7 Ke6 0–1. vidyashankarh (1930) – wecenbarger (1805), net–chess.com, 2002.

4.c4 Ne7 5.Nf3 d6 6.Be2 f5 7.Bd3 (7.a3 Bc5–/+) 7...Na6 (7...0-0 8.ef5 Nf5 9.Be4–/+) 8.a3–/+ Ba5 (8...Bc5 9.Bc2–/+) 9.0-0 (9.ef5 Nf5 10.Qc2 0-0–/+) 9...Nc5–+ 10.Qe2 0-0 11.Nc3 Nd3 12.Qd3 Bc3 13.Bc3 fe4 14.Qe4 Rf4 15.Qc2 Bf5 (worse is 15...Rc4 16.Qb3 Be6 17.d3 Rc3 18.Qc3–/+) 16.d3 Qe8 (16...Bg4 17.Bd2 Rf8 18.Ng5–/+) 17.Ne1 (17.Ne5 de5 18.Be5 Rg4–+) 17...Qg6–+ 18.Qe2 (18.Qb3 Rb8 19.Bd2 Rg4–/+) 18...Rf8 19.f3 (19.Qd2 Nc6–+) 19...Nc6 20.Rd1 Nd4 21.Qe3 c5 22.Bd4 (22.Rb1 b6–+) 22...Rd4 (22...cd4 23.Qe2–+) 23.Kh1 (23.Rf2 b6–+) 23...b5 (23...a6!? 24.a4–+) 24.cb5 Rb8 Black is in command 25.f4 Bg4 26.Rb1 Rf8 27.b6 ab6 28.Rb6 Black creates threats along the open e–file 28...ef4 29.Qd2 Bf5 (29...f3 30.gf3 Rdf4 31.Rg1 Rf3 32.Qg2–/+) 30.Qa2 Qe6 31.Qe6 Be6 32.Rf3 (32.g3 g5–+) 32...Bg4–+ 33.Rf2 (33.Rf1 Be2 34.Rg1 Bd3–+) 33...Re8 Threatening mate: Rxe1 34.Rb1 Ra4 (34...Be2 35.Ra1–+) 35.Nc2 Bf5 36.Rd2 c4 (36...c4 37.dc4 Rc4–+) 0–1. Weber – Rohde,Friedhelm, corr BdF T5003, 1995.

4.Bc4 Nc6 5.Bg8 (5.c3 Bf8 6.d4 ed4 7.cd4 Bb4 8.Nd2+=; 5.a3 Bf8 6.Nf3 Bc5 7.Nc3 a6 8.0-0+=) 5...Rg8 6.Qh5 Ke7 7.Qh7 d6 8.Nf3+=.

4.Bc4 d6 5.c3 (5.Nf3 Nc6 6.c3 Ba5 7.0-0 Bb6 8.d4+=; 5.Ne2 Nc6 6.c3 Ba5 7.0-0 f5 8.ef5+=; 5.a3 Bc5 6.Nf3 Nc6 7.d4 ed4 8.Nd4+=) 5...Ba5 6.d4 Nc6 7.Bg8 Rg8 8.Qh5+=.

4.Bc4 Qe7 5.Ne2 (5.Nf3 d6 6.0-0 Nc6 7.c3 Ba5 8.d4+=; 5.Nc3 c6 6.a3 Bc5 7.Na4 Bd6 8.Nc3+=; 5.Nh3 c6 6.c3 Bc5 7.0-0 b5 8.Bb3+=) 5...Nc6 6.Nec3 Bc5 7.Bg8 Rg8 8.Nd5=.

4.Bc4 Ne7 5.Qh5 (5.c3 Bc5 6.d4 d5 7.ed5 ed4 8.cd4+=) 5...g6 6.Qh4 Nec6 7.Nc3 f5 8.Qd8+=.

4.Bc4 Kf8? 5.c3 Be7 6.Nf3 c5 7.0-0 d6 8.d4 cd4 9.cd4 Bg4 10.de5 Bf3 11.ef6! 1–0. Woschkat – Plath, corr.

5.Bc3 Bb6 6.d4 ed4 7.Bd4 Bd4 8.Qd4 Nc6 9.Qc3 Nh6 10.Bc4 Nf7 11.Bf7 Kf7 12.Nf3 d6 13.0-0 Re8 14.Re1 Kg8 15.Nbd2 Be6 16.g3 Ne7 17.Nd4 Ng6 0–1. pauldopson – malaysianisme, net–chess.com, 2004.

5.Bc4 Ne7 6.Nc3 Bc3–/+ 7.Bc3 Nbc6 8.Qh5= Ng6 9.Ne2 d6 10.0-0 a6 11.f4+= ef4 12.Nf4 Nce7 13.Rab1 b5? 14.Bd5 Rb8= 15.a4 Qd7 16.Ne6 Nd5 17.ed5 c6? 18.Rfe1?? Kf7= 19.Re3 cd5 20.Qd5+= Re8?? 21.Ng5 (21.Ng5 Kf8 22.Nh7#) 1–0. bonaparte (2155) – alwayslosing (1945), net–chess.com, 2008.

5.Bc4 Ne7 6.Nf3 (6.Qh5 g6 7.Qf3 Rf8+=) 6...Nbc6 (6...c6 7.0-0+=) 7.Nh4 (7.0-0 d5 8.ed5 Nd5+=) 7...g6 8.Qf3 Rf8 9.Qe3 (9.0-0 d6+=) 9...d5–/+ 10.Bb3 (10.ed5 Nd5 11.Qh6 Nb6–/+) 10...Be6 (10...Bb6 11.Qd3 Nd4 12.Bd5–+) 11.ed5 (11.0-0 Bb6 12.Qh6 g5–/+) 11...Nd5–+ 12.Qh6 Qd7 13.0-0 0-0-0 14.d3 g5 15.Nf3 Nce7 (15...Bb6 16.a4–+) 16.Qh7 Bf5 17.Qg7 g4 (better is 17...Rg8!? 18.Qh6 Rh8–+) 18.Ne1 (18.Nfd2 Rg8 19.Qh6 Rh8–+) 18...Nf4 (better is 18...Rh8 19.Bd5 Nd5 20.Qd7 Rd7–+) 19.g3?? (better is 19.Ra2–/+) 19...Ne2 (19...Nh3 20.Kg2 Be1 21.Re1 Qc6 22.Re4 Qe4 23.de4 Be4 24.Kf1 Rd1 25.Ke2 Bf3 26.Ke3 Nf5) 20.Kg2 Qc6 21.f3 Be1 22.Nc3 (22.Qe7 gf3 23.Rf3 Rh8 24.h4 Bg4 25.Nd2 Bd2 26.Raf1 Be1 27.Qg7 Bf3 28.Rf3 Bg3 29.Qg4 Kb8 30.Qc4 Qc4 31.Bc4 Bh4 32.Rf1 Nf4 33.Kf3 Bg5 34.Rg1 Rh3 35.Rg3 Rg3 36.Kg3 Rh8 37.Kg4 Rh2 38.Bc1 Rc2 39.Bf4 Bf4 40.Kf5 Bc1 41.a4 Rf2 42.Ke6 c6 43.Ke7 a6 44.Kd7 b5 45.Bb3 Kb7 46.ab5 cb5 47.Kd6 Ba3 48.Kd5 a5 49.Ke6 Kb6 50.Bd1 b4 51.Kd5 Rd2 52.Ba4 Rd3 53.Ke4 Rd4 54.Ke3 Bc1 55.Kf2 Rd2 56.Ke1 f5 57.Be8 f4 58.Ba4 e4 59.Be8 Kc5 60.Bg6 Kd4 61.Bf5 a4 62.Kf1 a3 63.Be6 a2 64.Kg1 a1Q 65.Bh3 Bb2 66.Bf1 b3 67.Kh1 Qf1) 22...gf3 23.Rf3 Bh3! 24.Kh3 A deflection 24...Ng1 A double attack (24...Qf3 25.Qg4 Qg4 26.Kg4 Bc3 27.Be6 Kb8 28.Bc3 Nc3 29.Kf3–+; 24...Nc3 25.Kg2 e4 26.de4 Qe4 27.Re1 Qe1 28.Bc3 Qe2 29.Rf2 Qe4 30.Kg1–+; worse is 24...Bc3 25.Bc3 Qf3 26.Qg4 Qg4 27.Kg4 Nc3 28.Be6 Kb8 29.Kf3–+) 25.Kh4 Rh8 26.Qh8 Rh8 27.Kg4 Qf3 0–1. Unger,Martin – van der Braak,Jelle, corr 3GMM–16, 1995.

5.Bc4 g6 6.Nf3 (6.Qf3 d6+=) 6...Ne7 (6...c6 7.0-0+=) 7.0-0= c5 (7...d5 8.ed5 Nd5 9.d4=) 8.Bc3 (8.Nc3 Bc3 9.dc3 d6=) 8...Nbc6+= 9.Ba5 Na5 10.Ba2 Rf8 (10...d5 11.ed5 Nd5 12.Re1+=) 11.Nc3 (11.d3 d6+=) 11...b6 (11...d6 12.Rb1+=) 12.Nb5 (12.Re1 Bb7+=) 12...Nb7 (12...d6 13.Nc3+=) 13.Bd5 (13.Nc3 d6+=) 13...Nd5–/+ 14.ed5 d6 15.Re1 Kf7 16.Nh4 (16.Nc3!?–/+) 16...Bd7 (16...g5 17.Nf3–+) 17.Nc3 (17.Rb1 a6 18.Nc3 f5–/+) 17...f5 (better is 17...g5 18.Nf3 g4–+) 18.f4?? (better is 18.g3–/+) 18...Qh4–+ 19.fe5 Qd4 20.Kh1 (20.Kf1 de5 21.Qe2 Rfe8–+) 20...de5 21.d6 (21.Qe2 e4–+) 21...Nd6 22.Ne2 (22.Re3 Bc6 23.Qe1 Nc4–+) 22...Qg4 23.h3 Qh4 24.Ng1 Ne4 (24...Rae8 25.Nf3 Qg3 26.Re3–+) 25.Nf3 Qg3 26.Qe2 (26.Rf1 Rae8 27.Kg1 Nd6–+) 26...Nf2 27.Kg1 Nh3 28.Kh1 e4 29.Ng1 (29.Nh2 Nf4 30.Qf1–+) 29...Nf2 30.Qf2 Qf2 31.Nh3 Qh4 32.Kh2 f4 (32...f4 33.Re2 Qg3 34.Kh1 Bh3 35.gh3 f3–+) 0–1. Benassi,Aspasio – COMP, 2001.

5.c3 d5 6.d4 Be7 7.de5 de4 8.Qd8–/+.

5.Nc3 b6 6.Nf3 Ne7 7.Bc4 Bb7 8.0-0 c6 9.Re1 b5 10.Bb3 Qb6 11.Rf1 d5 12.ed5 cd5 13.d3 0-0 14.h3 Kh8 15.Ne2 d4–+ 16.c3 Bf3 17.gf3 Nf5 18.Ng3?? Ng3 19.fg3 dc3 20.Kh1 cb2 21.Ra2 Bd4 22.Bd5 Nc6 23.f4 Rac8 24.Qb1 Ne7 25.Bb3 Rc7 26.fe5 Rfc8 27.Bc4 bc4 28.ef6 Bf6 29.Rf6 Qf6 30.Rb2 Qf3 31.Kh2 cd3 32.h4 Rc2 33.Kh3 Qg2 34.Kg4 R8c4 35.Kh5 Qd5 0–1. iboyd (1950) – rodnel, net–chess.com, 2006.

5.Nc3 c6 6.Na4 Be7 7.d4 (7.Qg4 g6 8.Bc4 d5–+) 7...d5–/+ 8.ed5 Qd5 9.Nf3 Qa5 10.Nc3 Bg4 (10...e4 11.Nd2 Bf5 12.Bc4+=) 11.de5+= fe5 12.Be2 (12.Bd3 Nf6 13.h3 Bf3 14.Qf3 Nbd7+=) 12...Nf6 13.0-0 Nbd7 (13...Bf3 14.Bf3 Nbd7 15.Re1+=) 14.Ng5 Bf5 (14...Be2 15.Qe2 0-0 16.Ne6+=) 15.Bd3 (15.Re1 0-0-0–/+) 15...g6 (15...Bd3 16.Qd3 0-0-0 17.Nf7+/–) 16.Bf5 (16.Qf3 Bd3 17.Qd3 0-0-0–/+) 16...gf5 17.Qd3 (17.Ne6!? Rg8 18.Qf3+=) 17...e4–/+ 18.Qc4 Rf8 19.Rfd1 0-0-0 20.Ne6 (20.Nf7 Rde8 21.Rab1+=) 20...Ne5= 21.Qa4 Qa4 22.Na4 Rd1 (22...Nc4 23.Rd8 Rd8 24.Nd8 Kd8 25.Bf6 Bf6 26.Rd1 Kc8 27.Nc5+=) 23.Rd1+= Nfd7 24.Nf8 Bf8 25.Bd4 Nc4 26.Ba7 b5 27.Nc3 Na3 28.g4 (better is 28.Rd2!?=) 28...b4–/+ 29.Na4 (29.Ne2 fg4 30.Nd4 c5–/+) 29...fg4 30.Rd2 c5 (30...Ne5 31.Kg2–/+) 31.Nb6 Nb6 32.Bb6 Kb7 33.Bd8 Kc6 34.Re2 Kd5 35.Rd2 Ke6 36.Kg2 (36.Re2 Kf5–/+) 36...Nb5 (36...Nc4 37.Re2 Kf5 38.Bc7–+) 37.Bg5 Nd4 38.Be3 (38.Kg3 Kf5 39.Bf4 Bg7–+) 38...Nf3–+ 39.Rd1 Bd6 40.Ra1 h5 (40...Nh2?! 41.Ra6 Kd7 42.Rd6 Kd6 43.Kh2+=) 41.Rh1 (41.Ra2 c4–+ (41...Nh2?! 42.Ra6 Kd5 43.Rd6 Kd6 44.Kh2–+)) 41...c4 (41...c4 42.h3 gh3 43.Rh3 Ne1 44.Kf1 Nc2 45.Rh5 c3–+ (45...Ne3 46.fe3 c3 47.Ke2–+)) 0–1. Cohoon,Bobby – Stanley,Bob (1890), IECC, 2002.

5.Nc3 c6 6.Na4 Bf8 7.d4 Qa5 8.Nc3–/+.

5.Nc3 d6 6.Bc4 =+.

5.Bc4 c6 6.d4 (6.Be5 d5 (worse is 6...fe5 7.Qh5 Ke7 8.Qe5 Kf8 9.Qc5 d6 10.Qe3+/–) 7.Bb8 Bd4=) 6...Bd4 7.Bd4 ed4 8.Qd4 Qb6 9.Nf3 Ne7 10.0-0 (10.Qc3 Qd8=) 10...d5 (10...Qd4 11.Nd4 d5 12.ed5 cd5 13.Bb5 Nbc6 14.Nc3–/+) 11.ed5 (11.Qb6 ab6 12.ed5 cd5+=) 11...cd5 (11...Qd4 12.Nd4 cd5 13.Bb5 Bd7 14.Nc3–/+) 12.Bb3 (12.Qb6!? ab6 13.Bd3+=) 12...Qd4–/+ 13.Nd4 a6 (better is 13...Nbc6!? 14.c3 Kd8–/+) 14.Nc3= Nbc6 15.Rad1 Nd4 16.Rd4 Be6 17.Re1 Kf7 18.Ne4 (18.Nd5 Nd5 19.Bd5 Bd5 20.Rd5 Rhe8 21.Rd7 Kg6=) 18...Rad8+= (worse is 18...de4 19.Be6 Ke6 20.Rde4 Kf5 21.Re7+=) 19.Nc5 Bc8 20.c4 Nf5 21.Rd5 b6 22.Na4 Be6 (22...Nd4 23.Rd4 Rd4 24.c5 Kg6 25.cb6=) 23.Rd8 Rd8 24.Bd1 Bc4 25.Nb6 Be6 26.Be2 Nd4 27.Kf1 (27.Ba6? Rd6 28.Rb1 Nb3–+) 27...Rb8 28.Rb1 Ne2 29.Ke2 Bc4 30.Ke3 Bb5 31.Nc4 Re8 32.Kd4 Bc4 33.Kc4 Re2 34.Rf1 Kg6 35.Kb4 f5 36.Ka5 Ra2 37.a4 f4 ½–½. Cuevas Lavallade,Jesus (1815) – Schulz,Hans_Juergen (1785), b2–b4.com, 2004.

5.Bc4 Nc6 6.Nc3 Nge7 7.Nge2 a6 8.Nd5 (8.0-0 d6+=) 8...d6 (8...Na5 9.Ba2 Nd5 10.d4 Bd4 11.Bd4+=) 9.Ng3 (9.d4 ed4 10.Ndf4 Ng6+=) 9...Nd5 10.Bd5 Ne7 (10...Qd7 11.Nf5=) 11.Bb3 Qd7 12.h3 (12.d4 ed4 13.Bd4 Bd4 14.Qd4 b5=) 12...Qc6 13.0-0 g6 (13...h5 14.c3=) 14.a4 a5 (14...Rf8 15.a5 b5 16.ab6 Qb6 17.Rb1+=) 15.d4 (15.c3 h5=) 15...ed4 (15...Bd4 16.Bd4 ed4 17.Qd4=) 16.Ne2 (16.Bd4 Bd4 17.Qd4 Rf8=) 16...Rf8 (16...Qe4 17.Nd4 Bd7 18.Qd2+=) 17.Nd4= Qa6 (17...Qe4 18.Re1 Qf4 19.Qe2+=) 18.Bc1 (18.Qd2 Qb6=) 18...Bd4 (18...f5!? 19.ef5 Qb6+=) 19.Qd4+= Nc6 (19...g5 20.Bc4 Nc6 21.Qd3+=) 20.Qc3 (20.Qd1+/–) 20...Ke7 (20...g5!?+=) 21.Rb1 (21.Bh6!? Re8 22.Bg7 Be6+/–) 21...Be6 22.Bd5 Rae8 23.Rb5 Kf7 24.Bh6 Rg8 25.Rfb1 Bd5 26.ed5 Nb4 27.Qc7 Re7 28.Qc4 g5 (28...Qa8!?+/–) 29.c3+– Nc2 (29...Rg6 30.cb4 Rh6 31.ba5+–) 30.Qg4 Kg6 (30...Ne1 31.Qf5 Rg7 32.Bg7 Kg7 33.Qc8 Nf3 34.gf3+–) 31.Bg5 fg5 (31...h5 32.Qf3 fg5 33.Qd3 Kg7 34.Qc2+–) 32.Rb6 Qe2 (32...h5 33.Qg3 (33.Ra6 hg4 34.Rd6 Kf5–/+) 33...Nb4 34.Rd6 Kh7 35.Ra6 Na6 36.d6+–) 33.Rd6 Kg7 34.Qe2 Re2 35.Rb7 Kh8 36.Rdd7 Rg6 37.d6 Re8 38.Rh7 (38.Ra7 h6+–) 38...Kg8 39.Rhd7 (39.Rhd7 g4 40.h4+–) 1–0. Benassi,Aspasio – Johansson,Mats, b2–b4.com, 2005.

5.Bc4 Nc6 6.Bg8 Rg8–/+ 7.Qh5 Kf8 8.Qh7 d5 9.Nf3 Kf7 10.ed5 Nd4 11.Bd4 ed4 (11...Bd4?! 12.c3 (worse is 12.Nd4 ed4 13.Qh5 g6 14.Qh7 Rg7–/+) 12...Rh8 13.Qe4=) 12.0-0 Qd5 13.Nh4 Bd7 14.Qg6 (14.Qd3 g5 15.Nf3 Bf5–+) 14...Kf8 15.Re1 (15.Qd3!? g5 16.Nf3–+) 15...Rh8–+ 16.Qg3 (16.Nf3 Re8 17.Re8 Be8–+) 16...Kf7 17.c4 Qc4 18.Qc7?? (18.d3 Qd5 19.Nd2–+) 18...Qd5 (18...Rh4?! 19.Qd7 Kg6 20.g3=) 19.Nf3 (19.Qg3 g5 20.Qf3 Qd6 21.Qb3 Kg7–+) 19...Rac8 20.Qa5 (20.Qf4 Bd6 21.Qe4 Qe4 22.Re4 Rc1 23.Re1 Bh2 24.Kh1 Bd6 25.Kg1–+) 20...Rh3! (20...Rh3 21.d3 Rf3–+) 0–1. hahaha (2015) – marekt (2075), gameknot.com, 2014.

5.Bc4 d6 6.c3 =+.

5.Bc4 Qe7 6.Qh5 g6 7.Qf3 c6 8.Ne2+=.