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TESTH150 Release 2024-06-14
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 e5 2.Bb2 f6 3.b5 d5

(...)

4.a3 a5 5.a4 Be6 6.e3 (6.Nf3 Bd6+=) 6...Nd7 7.d4 (7.Nc3 Bb4–/+) 7...e4 (better is 7...Bb4!? 8.Nc3 Nh6–/+) 8.Nd2= Nb6 9.Ne2 f5 (9...Bd6 10.Nb3 Ne7 11.Nf4 Bf4 12.ef4=) 10.Nc1 (10.Nf4 Bf7+=) 10...Nf6 11.Be2 (11.Ncb3 Bd6=) 11...Bd6 12.Ncb3 0-0 13.Qc1? (better is 13.Nc5!? Qc8 14.0-0=) 13...f4–/+ 14.Nb1?? (better is 14.Nc5 Qe8 15.Ndb3–+) 14...Ng4–+ 15.g3 (15.Nc5 Qh4 16.Bg4 Bg4–+) 15...fg3 (15...fe3 16.fe3 Nc4 17.Nc5 Bc5 18.dc5 Nce3 19.Bd4–+) 16.fg3 Nh2! 17.Ba3 (17.Rh2 Bg3 Double attack (17...Bg3 Decoy)) 17...Bg3 18.Kd2 (18.Kd1 Rf2 19.c4 Nc4–+) 18...Rf2 19.Nc3 (19.Qd1 Qg5 20.Kc1 Qe3 21.Qd2 Qd2 22.Kd2 Nc4 23.Kc1 Re2–+) 19...Qg5 (19...Nc4 20.Kd1 Qg5 21.Bc4 dc4 22.Qd2 cb3 23.Kc1 Rd2 24.Kd2 Nf3 25.Kc1 Qe3 26.Kb2 Qd4 27.Rh5 bc2 28.Rc5 Bf4 29.Rf1 Qf2 30.Ne2 Qe2 31.Rc2 Be5 32.Kb1 Nd2 33.Kc1 Qf1 34.Kd2 Rd8 35.Bd6 Rd6 36.Ke3 Qf3) 20.Kd1 Nc4 21.Qb1 Ne3 22.Kc1 (22.Kd2 Nc4 23.Kd1 Bg4 24.Re1 Qf4 25.Bg4 Rd2 26.Kc1 Re2 27.Nd2 Qd2) 22...Nc4 23.Kd1 Qe3 24.Bb2 Re2! 0–1. Havlicek,Pavel (1705) – Koller,Martin (1900), Ricany CZE, Open, 2012.

4.a3 Bc5 5.e3 Bd7 6.a4 Ne7 7.a5 0-0–/+ 8.Bc3 a6 9.b6 cb6–+ 10.ab6 Qb6 11.Ba5 Qd6 12.g3 Nbc6 13.c4 d4 14.Bg2 Na5 15.Ra5 Bc6 16.e4 Rac8 17.Ra2 Bb4 18.f3 f5 19.f4? ef4 20.g4 fe4 21.Rb2 f3 22.Rb4 Qb4 (22...Qb4 23.Bf3 ef3–+; 22...fg2 23.c5 Rf1 24.Ke2 d3 25.Ke3 Qc5 26.Rd4 Qg5#) 0–1. solidsteelpole – esaul, Live Game Caissa's Web, 2006.

4.a4 Bb4 5.e3 Ba5 6.c3 (6.Bc3 Bc3 7.Nc3 Ne7=) 6...c6 7.c4 dc4 (7...Ne7 8.Qh5 g6 9.Qf3=+) 8.Bc4= cb5 (8...Bf5 9.Nf3=) 9.ab5 Bb6 (9...Bf5 10.Nf3=) 10.Nf3 Qe7 (10...Bg4 11.0-0+=) 11.0-0 Nh6 (11...Be6 12.Ba3 Qf7 13.Be6 Qe6 14.d3+=) 12.d4+- Nf7 (12...e4!? 13.Nfd2 Bg4+-) 13.de5+- fe5 14.Nc3 (14.Bf7 Kf7 15.Ne5 Kg8+-) 14...0-0 (14...Be6 15.Nd5 Qd6 16.Qb3+- (16.Nb6 Qb6 17.Qb3 Bc4 18.Qc4 Nd7+-)) 15.Ba3 (15.Nd5 Qd8 16.Ba3 Nd7 17.Ne7 Kh8 18.Nc8 Rc8 19.Bf8 Rc4+-) 15...Bc5 16.Bc5 (16.Bf7 Rf7 17.Nd5 Qd6 18.Bc5 Qc5+-) 16...Qc5 17.Bf7 Rf7 (17...Kf7 18.Ne4 Qe7 19.Qd5 Kg6 20.Ne5 Kh6 21.Nd6+-) 18.Ne4 (18.Ng5 Rf8 19.Qb3 Kh8 20.Nf7 Rf7 21.Qf7+-) 18...Qe7+- (18...Qb5?? 19.Nd6 Rd7 20.Nb5 Rd1 21.Rfd1+-) 19.Nfg5 (19.Rc1 Be6+-) 19...Rf8 20.Qb3 (20.Qd5 Kh8+-) 20...Kh8 21.Rac1 (better 21.Qa3 Qa3 22.Ra3+-) 21...Nd7?? (better 21...Bg4!?=) 22.Rc7 (better 22.Qe6 Re8 23.Qe7 Re7 24.Rfd1+-) 22...Qd8?? (better 22...h6 23.Ne6 Re8+-) 23.Rfc1 b6 (23...Nb6 24.Nf7 Rf7 25.Qf7 Qg8+-) 24.Nf7 Rf7 25.Qf7 Nc5 (25...Qg8 26.Qg8 Kg8 27.Rc8 Rc8 28.Rc8 Kf7+-) 26.Qg7 1–0. RichardSommer (1945) – ramezskafi (1970), lichess.org, 2020.

4.a4 d4 5.e3 c5 6.Nf3 Bg4 7.Be2 Bd6 (better 7...de3!? 8.fe3 e4=) 8.ed4+/- cd4 9.Nd4 Be2 10.Ne2 Ne7 11.0-0 0-0 12.c4 (12.Nec3 Qc7+/-) 12...a5 (12...Qc7 13.Qb3 Rf7 14.Nbc3+/-) 13.Nbc3 Bb4 14.d4 ed4 15.Nd4 Re8 16.Ne6 Qd1 (16...Qc8 17.Nd5 Qe6 18.Nc7+-) 17.Rad1 (17.Nd1?! Rc8 18.Ne3 Kf7+/-) 17...Ng6?? (17...Rc8 18.Nd5 Nd5 19.cd5+-) 18.Rfe1 (better 18.Nc7 Nc6 19.Na8 Ra8 20.bc6 bc6 21.Rfe1+-) 18...b6 19.Nc7 Na6?? (better 19...Re1 20.Re1 Ra7 21.Re8 Kf7+-) 20.Re8 Re8 21.Ne8 (better 21.ba6!? Rc8 22.N3b5 Ne5 23.Be5 fe5+-) 21...Nc5 22.Rd8 (better 22.Nd5!? Na4 23.Bd4 Kf7+-) 22...Kf7 23.Nd6 (better 23.Nd5 Na4 24.Bd4 Ne5+-) 23...Ke7 24.Rb8 (24.Nb7 Nb7 25.Rb8 Nd6 26.Nd5 Kd7+-) 24...Kd6 25.Rb6 Ke5 (25...Kd7 26.Nd5+-) 26.Na2 (26.Ne2 Ke4 27.Rd6 Ne7 28.Ng3 Kf4+-) 26...Ke4 (26...Kf5 27.Nb4 ab4 28.a5+-) 27.Nb4 ab4 28.a5 (28.Rd6 Nf4 29.a5 Na4+-) 28...Na4 29.Ba1 Nb6 30.ab6 Ne5 31.b7 Nd7 32.c5! Kd5 (32...Nc5 33.b8Q Combination) 33.c6 Nb8 34.c7 Nd7 35.c8Q Nb6 36.b8Q (36.Qc6) 36...Nc8+- 37.Qc8 b3 (37...Kd6 38.b6 Kd5 39.b7 Kd6 40.b8Q Kd5 41.Qb5 Ke4 42.Qbc4) 38.Qc6 1-0. biktimiroff (1990) - veeman75 (2080), Hourly Bullet Arena, lichess.org, 2020.

4.a4 Bd7 5.e3 c6 (---> 4.e3 c6 5.a4 Bd7).

4.a4 Nd7 5.e3 Nb6 6.c4? Nc4-/+ 7.Bc4 dc4 8.Nf3 Bg4 9.h3 Bh5 10.g4 (10.Ba3 e4 11.g4 ef3 12.gh5 Qd5-/+) 10...Bf7 11.Nc3 Ne7 12.0-0 Ng6 13.Qc2 Be7 14.Rad1 (14.Qe4 Rb8-/+) 14...0-0 (14...Qd3!? 15.Ne1 Qc2 16.Nc2-+) 15.d3 cd3 16.Rd3 Qc8 17.Nd5? (17.Rfd1 c6 18.R3d2 cb5 19.ab5 Bb4-+) 17...Bd6 (17...e4!? 18.Nh4 ed3 19.Ng6 hg6 20.Ne7 Kh7 21.Qd3-+) 18.Rdd1 (18.Nd2 f5 19.gf5 Qf5-+) 18...h5! 19.Nh2 (19.gh5 Qh3 Double attack (19...Qh3 Pinning; 19...Qh3 Deflection; 19...Qh3 Decoy)) 19...e4 (better 19...hg4!? 20.Ng4 Rd8-/+) 20.Qe4=+ Bh2 (20...Rd8 21.f4 hg4 22.hg4=+) 21.Kh2= hg4 22.hg4 (better 22.Qg6 Bg6 23.Ne7 Kh7 24.Nc8 Rac8 25.hg4=) 22...Ne5?? (better 22...c6 23.Nc3 Ne5=+) 23.Ne7+- Kh8 24.Nc8 Rac8 25.Be5 fe5 26.Qe5 (26.Kg3 Kg8 27.Rh1 Be6 28.Qh7 Kf7+-) 26...c6 (26...Rfe8 27.Qc3 Be6 28.Qa5 Bg4 29.f3+-) 27.Kg3 (27.Rd7 Rce8 28.Qc7 Kg8+-) 27...Kg8 (27...Rfe8 28.Qg5 Be6 29.bc6 bc6 30.Rb1+-) 28.bc6 (28.Rd7 Rfe8 29.Qg5 cb5 30.ab5 Re6 31.Rb7 Rf8 32.Ra7 Rg6+-) 28...Rc6 (28...bc6 29.Rd7 Rce8 30.Qc7+-) 29.Rd6 (29.Qe7 Be6+-) 29...Rc4 (29...Re8 30.Qd4 Rd6 31.Qd6+-) 30.Qe7 Re8 (30...Rc6 31.Rfd1 Rd6 32.Rd6+-) 31.Qb7 (31.Rd8 Rc8 32.Rc8 Rc8 33.Qb7 Be6+-) 31...Be6 32.f3 Rc2 33.Rf2 Rc1 34.Qa7 Rg1 35.Rg2 Ra1 36.a5 Bc4 37.Qd7 (better 37.Rd7!? Ra5 38.Qa5 Be6+-) 37...Rf8 38.a6! Ba6 (38...Ra6 39.Ra6 Combination; 38...Ba6 39.Qe6 Mate attack) 39.Qa7 (39.Qe6 Rf7 40.Rd8 Kh7 41.Rh2) 39...Rf3 40.Kf3 (better 40.Kh2 Raf1+-) 40...Be2 41.Re2 Ra7 42.Red2 Kh7 (42...Rf7 43.Ke4+-) 43.Rd7 Ra3 44.R2d6 Ra1 45.Rc6 Rf1 46.Ke4 Rg1 (46...Rf8 47.Ke5+-) 47.Rcc7 (better 47.Kf5 Rf1 48.Kg5 Rb1+-) 47...Rg4 48.Kd3 Rg3 49.Kd4 Kh6 50.e4 g6 51.Rd6 Rg4 52.Rcc6 Kh5 53.Rg6! Rg6 (53...Rg6 54.Rg6 Combination). brucepeng (1925) - wa_ncho (1930), lichess.org, 2020.

4.a4 Bg4 5.Nc3 d4 6.Ne4 f5 7.h3 Bh3 8.Nh3 =+.

4.a4 Nh6 5.e3 Bc5 (5...Nf5 6.Nf3+=) 6.d4= Bb4 7.c3 Ba5 8.Nf3 e4 9.Nfd2 0-0 (9...Bg4 10.Be2 Be2 11.Qe2=) 10.Nb3 c6 11.Na5 Qa5 12.Be2 (12.Ba3 Rd8=) 12...Be6+= 13.0-0 Nd7 (13...Qb6 14.a5 Qc7 15.b6+=) 14.Nd2 f5 (14...Qc7 15.c4+=) 15.Ba3 (15.bc6 bc6 16.Ba3 Rfc8+=) 15...Rf6 (15...Rfc8 16.Bb4 Qc7 17.f3=) 16.bc6 bc6 17.Be7 Rf7 18.Bd6 Kh8 (18...Ng4 19.c4+/–) 19.Bh5 g6 20.Be2 Nf6 (20...Ng4 21.c4+/–) 21.Nb3 Qd8 22.Bf4 Kg7 23.Nc5 Qe7 24.Rb1 Bc8 (24...Nhg4 25.h3 Nh6 26.Be5+-) 25.c4 Nhg8 (25...Be6 26.cd5 Nd5 27.Be5 Kg8 28.Qc2+-) 26.Be5 Kf8 27.Qd2 (27.cd5 cd5 28.Qb3 Be6+-) 27...Qd8 (27...Nd7 28.Nd7 Qd7 29.Rfc1+-) 28.a5 (28.Rb2 Ng4+-) 28...Nd7?? (28...Ng4 29.Bg3 Kg7+-) 29.Ne6 (29.Ne6 Ke8 30.Nd8 Kd8 31.cd5 cd5 32.Bf4+-) 1–0. Walther,Manfred (1890) – Kleine,Joachim, DESC, 2000.

4.Nc3 Bb4 5.Na4 (5.e4 Bc3 6.dc3 de4 7.Qh5 g6=+) 5...c6 (5...a6 6.ba6 Na6 7.a3–/+) 6.e3=+ Ne7 7.Nf3 (7.Qh5 Ng6=+) 7...Bg4 8.h3 Bh5 9.g4 Bg6 10.a3 Ba5 (10...Bd6 11.g5–/+) 11.Bc3 (11.g5 Nd7=+) 11...Bb6 (11...0-0 12.Nh4=+) 12.Nb6 ab6 13.d4 ed4 14.Nd4 Qd7 15.Be2 c5 16.Nb3 0-0 17.0-0 Qe6 18.a4 Nd7 19.f4?? (better 19.Re1=+) 19...Qe3–+ 20.Kh2 Qc3 21.Rc1 (21.Bd3 f5 22.Qd2 Qf6–+) 21...Ra4 22.Rf3 Qb4 (22...Qb2 23.Re3 Re4 24.Qd2–+) 23.c4 (23.c3 Qa3 24.Ra1 Qb3 25.Qb3 Ra1–+) 23...d4 24.f5 Bf7 25.Rc2 (25.Rb1 Ra2 26.Rf2 Qc3–+) 25...Ne5 26.Rg3 Bc4 27.Bc4 Nc4 28.Qf3 (28.Qe2 Ne5 29.Rb2 d3–+) 28...Ne3 29.Qe2 (29.Rb2 Qc3 30.Rgg2 Rb4–+) 29...Nc2 (29...Qb3!? 30.Rd2–+) 30.Qe7 (30.Qc2 Qb5 31.Qd2 Nd5–+) 30...Ne3 31.Qe6 Kh8 (31...Kh8 32.Re3 de3 33.Qe3 Ra3–+) 0–1. GoldbergVariations (1965) – Springer (1995), ChessWorld.net, 2013.

4.c4 a6 5.cd5= ab5 (5...Qd5 6.Nc3 Qd8 7.e3=) 6.e4 Bd6 (6...c6!?=) 7.Bb5+- c6 8.dc6 bc6 (8...Nc6 9.Nf3+-) 9.Bc4 Qb6 (9...Ba6 10.Bg8 Rg8 11.Qh5 Ke7 12.Nc3+= (worse 12.Qh7 Nd7 13.Nh3 Nc5–/+)) 10.Bb3 (10.Bc3 Bc5 11.Qh5 g6+-) 10...c5 (10...Na6 11.Na3+-) 11.Qh5 (11.Na3!?+-) 11...g6+= 12.Qd1 (12.Qe2 Be6 13.Qe3+= (worse 13.Be6 Qb2 14.Bg8 Qa1 15.Qb5 Nd7–/+)) 12...Bd7 (12...c4 13.Qc2 Be6 14.Ba4 Kd8=+) 13.Nc3?? (better 13.Na3+-) 13...c4!–/+ 14.Nd5 (14.Bc4 Qb4 Double attack (14...Qb2 Pinning; 14...Qb2 Deflection; 14...Qb4 Decoy)) 14...Qb7 (14...Qb5 15.Qf3 f5 16.ef5 cb3 17.fg6 hg6 18.Nf6 Nf6 19.Qf6 (19.Qa8?? Bc6 20.Qa7 Bg2–+) 19...ba2 20.Qh8 Kf7 21.Nf3 Qb2 22.Ng5 Ke7 23.Qg7 Ke8 24.Qg6 Ke7 25.0-0+=) 15.Bc4 (15.d4 cb3 16.Qb3 Qb3 17.ab3 Ra1 18.Ba1 Be6 19.de5 fe5–/+) 15...Qb2 16.Rb1 (16.Nf3 Nc6–/+) 16...Qd4 17.Qe2 (17.d3–/+) 17...h5 (17...Ra4!? 18.d3 Qa7–/+) 18.Nf3=+ Qc5 19.0-0 g5 (19...Nc6!?=+) 20.Rfc1 (20.Nb6 Ra5 21.Rfc1 g4 22.Bg8 gf3 23.Qf3 Rg8 24.Rc5 Rc5 25.Qh5 Kf8+-) 20...g4= 21.Nf6?? (better 21.Nh4 g3 22.hg3+=) 21...Nf6–+ 22.Bf7 (22.Bd5 Qa5 23.Ba8 Qa8–+) 22...Kf7 23.Rc5 Bc5?? (better 23...gf3 24.Qc4 Be6–+) 24.Ne5 Ke8 25.Qc4 Bf2 26.Kf2 Rf8 27.Kg1 (27.Nd7?! Nbd7 28.Ke3 g3+-) 27...Ra4 (27...g3 28.Qc7 Na6+-) 28.Rb8 (28.Rb8 Ke7 29.Ng6 Kd6 30.e5) 1–0. GuestNVBF – GuestDWYS, freechess.org, 2020.

4.c4 c6 5.bc6 bc6 6.e3 Bd6 7.Nf3 Be6 8.Qc2 Ne7 9.Nc3 0-0 10.cd5 cd5 11.Nb5 Nbc6 12.Nd6 Qd6 13.a3 Rac8 14.Qd1 (14.Qa4 Rb8 15.Bc3 Bd7=+) 14...Na5 (14...Rb8!? 15.Rb1 d4-/+) 15.Bc3=+ Nc4 16.Bb4 Qd7 17.Qb3 (17.d3 Nd6=+) 17...Rfd8 (17...Rb8 18.Qd1-/+) 18.Be2 Nc6 19.Bc3 N6a5 20.Qa2 d4 21.ed4 Ne3 22.Qb2 (22.fe3!? Ba2 23.Ba5-+) 22...Ng2 23.Kf1 Nf4 24.Bb5?? (better 24.Ba5 Bh3 25.Ke1 Ng2 26.Kf1 Ne3 27.Ke1 Nc2 28.Qc2 Rc2 29.Bd8-+) 24...Nc6 (better 24...Bc4 25.Bc4 Nc4-+) 25.de5 fe5 (better 25...Qd5 26.Qb1-+) 26.Ne5 Qd5 27.Rg1?? (27.Bc6 Rc6 28.f3-+) 27...Bh3 (27...Ne5 28.Rg7 Kf8 29.Qb4 Kg7 30.Qf4 Rc3 31.Qg5 Kf7 32.Qh5 Kf6 33.Qh6 Ng6 34.dc3 Qh1 35.Ke2 Qa1 36.f3 Qd1 37.Kf2 Rd2 38.Qd2 Qd2 39.Be2 Nf4 40.h3 Qe2 41.Kg3 Qe1 42.Kh2 Qf2 43.Kh1 Qg2) 28.Ke1 Qe4 29.Kd1 Nd4 (29...Ne5 30.Rg7 Kg7 31.Be5 Kf7-+) 30.Bd4-/+ Rd4 (30...Rd4 31.Rc1 Rc1 32.Kc1 Qe5-+) 0-1. ClayPigeons (2100) - triton13x (2100), Rated Bullet game, lichess.org, 2020.

4.c4 Ne7 5.e3 dc4 6.Bc4 Ng6 (6...Nf5 7.Nc3=) 7.Qb3 Qe7 8.a4 (8.Ne2 a6=) 8...Bf5 (8...Nh4 9.Ba3 Qd7 10.Bf8 Rf8 11.g3=) 9.Ba3 Qd7 10.f3 Ba3 11.Na3 c6? (11...Qe7 12.e4 Bc8 13.Ne2=) 12.Ne2?? (better 12.g4!? Bg4 13.fg4+-) 12...Ne7 (12...cb5 A) 13.Qb5?! a6 14.Qb6 A1) 14...Qa4?? 15.Qb7 Qc6 16.Qf7 Kd8 17.Bd5+- (17.Qg7?! Nd7+-); A2) 14...Qc6+=; B) 13.ab5?! Nh4+=; C) 13.Nb5 Nh4 14.Nd6 Qd6 15.Qb7 Ng2 16.Kf2+-) 13.g4 (13.d4 e4+/-) 13...Bg6= 14.h4 (14.d4 e4+=) 14...Nd5 (14...h5 15.Be6 Qd6 16.Rc1=) 15.Kf2 (15.e4 Nb6+=) 15...Bf7 (15...h5 16.bc6 bc6 17.gh5 Bh5 18.d4=) 16.bc6 (16.e4 Nb6 17.Bf7 Qf7 18.Qf7 Kf7+=) 16...bc6 (16...Nc6 17.Rhb1 0-0-0 18.Rc1=) 17.Rab1 (17.e4 Nb6 18.Bf7 Qf7 19.Qf7 Kf7+=) 17...0-0= 18.Qb7 Qb7 (18...Nc7!?=) 19.Rb7+= c5?? (19...Nb6 20.Bf7 Rf7 21.Rf7 Kf7 22.a5+=) 20.Rhb1 (better 20.Rf7 Rd8 21.Rf6 gf6 22.Nc3+-) 20...Nb4 (20...Nb6 21.Bf7 Rf7 22.Rf7 Kf7+/-) 21.Bf7 (21.Nc3!? Bc4 22.Nc4+=) 21...Rf7= 22.Rf7 Kf7 23.Nb5 Nd3 24.Kf1 Nc6 25.Rb3 (25.Nc1!? Ndb4 26.d3=) 25...Ncb4=+ 26.Rc3 a6 27.Nc7 (27.Nd6 Ke6 28.Ne4 Rc8=+) 27...Ra7 (27...Rd8 28.f4 Rd7 29.Na8=+) 28.Nd5 Nd5 29.Rd3 Nb4 30.Rc3 Ke6 (30...Rc7 31.e4=) 31.Nc1 (better 31.Rc5!? Kd6 32.d4+/-) 31...Kd6 32.Ke2 a5 (better 32...Nd5 33.Rc2 Rc7=) 33.Nb3+/- Kd5? (better 33...Nd5!? 34.Rc5 Nb6+/-) 34.Rc5+- Kd6 35.Ra5 Ra5 36.Na5 Nc6 (36...Nd5+-) 37.Nb3 (better 37.Nc6 Kc6 38.d4+-) 37…Na5 (37...Na5 38.Na5 Kd5+-). ClayPigeons (2160) - minio1983 (2075), Rated Bullet game, lichess.org, 2019.

4.d3 c5 5.a4 Be6 6.Nf3 Bd6 7.e3 Ne7 8.Be2 0-0 9.Nbd2 b6 10.0-0 Nd7 11.Bc3 Qc7 12.h3 f5 13.Ng5 Rf6 14.f4 h6 15.fe5 Be5 16.Be5 Ne5 17.Ne6= Re6 18.Nf3 Nf7 19.Nh4 Nd6 20.c4 Rf8 21.Qd2 Kh7 22.a5 g6 23.ab6 ab6 24.Ra6 Rd8 25.Nf3 dc4 26.Qa2 Re3 27.dc4 Ne4 28.Ra7 Qd6 29.Rd1= Qd1 30.Bd1 Rd1 31.Kh2 Ng5 32.Ng5 hg5 33.Qb2 Kh6?? 34.Ra8 g4? 35.h4 (35.h4 g3 36.Kh3 Rh1) 1–0. devil01gruby (1755) – carocan (1775), internet, 2011.

4.d3 Bc5 5.Nd2 Ne7 6.Ngf3 0-0 7.e3 c6 8.a4 Bd6 9.Be2 Be6 10.0-0 Nd7 11.c4 a6 0–1. Boiangiu,Daniel – Blair,Matthew (1680), RC–2008–0-00019, 2009.

4.d3 c6 5.bc6 Nc6 6.e3 Qb6 7.Bc3?? (better is 7.Bc1+=) 7...d4–+ 8.Ne2 dc3 9.Nbc3 Bb4 10.Rb1 Qa5 0–1. ramon33 (1875) – nordlicht (1985), gameknot.com, 2011.

4.d3 Bd7 5.a4 a6 6.c4 dc4 7.dc4 ab5 8.cb5 Bb4 9.Bc3 Bc3 10.Nc3 Ne7 11.e3 0-0 (11...c6 12.Bc4=) 12.Nf3 e4? (better 12...Be6!?=) 13.Ne4 Bf5 Black launches an attack 14.Qd8 Rd8 15.Ng3 Bc2 (15...Bg4 16.Nd2+-) 16.Bc4 (16.Nd4 Bg6 17.Ne6 Rc8+-) 16...Kh8 17.Nd4 (better 17.a5!? c6 18.Nd4 cb5 19.Bb5+- (19.Nc2 bc4 20.Rb1 Nec6=+)) 17...Ra4+= 18.Nc2 (18.Ra4 Ba4 19.Ke2 c6+=) 18...Rc4 19.Nd4 c6 20.bc6 (20.Ne6 Rc8+=) 20...Nbc6= 21.Ne6 (21.Nge2 Kg8=) 21...Rd6=+ 22.Ra8 Nd8?? (better 22...Ng8 23.Nf4 Rc1 24.Ke2 Rc2 25.Ke1 b5=+) 23.Rd8 (better 23.Nd8 Rc8 24.Rc8 Nc8 25.Nf7 Kg8 26.Nd6 Nd6+-) 23...Rd8 24.0-0 (better 24.Nd8 Nf5 25.0-0 (25.Nf5?! Rc1 26.Ke2 Rh1+-; 25.Nb7 Ng3 26.hg3 Rc1 27.Ke2 Rh1–/+) 25...Ng3 26.hg3+-) 24...Ra8 25.Rd1 h6 26.h3 b5 (better 26...Ra6!? 27.Nd4 g6–+) 27.Rd7–/+ Rc1 28.Kh2 Nc6 29.Rg7 (better 29.Ng7 Ra7 30.Ra7 Na7 31.N7f5–/+) 29...b4?? (better 29...Re8!? 30.Nc7 Kg7 31.Ne8 Kg6–+) 30.Nf5 (30.Nh5!? Ra7 31.Rg6+=) 30...Rg8 31.Rf7 Ne5 (31...b3 32.Rf6 Rg7 33.Rf8 (worse 33.Neg7 b2–/+; 33.Nh6? b2 34.Nf5 Rg2 35.Kg2 b1Q 36.Rf8 Kh7 37.Ng5 Kg6–+; worse 33.Rh6 Kg8–/+) 33...Kh7 34.Nfg7= (34.Neg7 b2=)) 32.Rf6 b3?? (better 32...Rg6 33.Rg6 Ng6=) 33.Rh6 1–0. aravind555 – rd24, lichess.org, 2017.

4.d3 Be6 5.e3 Bd6 6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Bd6 6.d3).

4.d4 Be6 5.de5 Nd7 6.Nf3 fe5 7.Ne5 Bb4 8.Nd2 Ne5 (8...Ngf6 9.a3 Ba5 10.Nef3=) 9.Be5 Nf6 10.c3 Bd6 (10...Ba3 11.e3+=) 11.Bd6 Qd6 12.e3 0-0 13.Bd3 a6 (13...c6 14.Qa4+=) 14.ba6 ba6 15.Nf3 (15.Rb1 Rab8+=) 15...c5 (15...Rab8 16.Qc2+=) 16.0-0 (16.Rb1 Bg4+=) 16...Rad8 (16...Rab8 17.Rb1+=) 17.h3 (17.Rb1 Bg4+=) 17...Bf7 (17...Ne4 18.Be4 de4 19.Qd6 Rd6 20.Ng5+=) 18.Qa4 Exerts pressure on the isolated pawn 18...c4 19.Bc2 Ne4 20.Qa5 (20.Be4 de4 21.Rad1 Qf6 22.Rd8 Rd8+-) 20...Qf6 21.Be4 de4 22.Nd4 Bd5 23.Qc5 (23.Rab1 Rd6+-) 23...Rd7 (23...Rd6 24.Rad1 Rfd8 25.Rd2+-) 24.Rab1 Rd6 25.Rb2 Qd8 (25...Rfd8 26.Rfb1+-) 26.Rd1 Bf7 (26...Rff6 27.Rbd2 Rd7 28.Ne2+-) 27.Rdb1+- 1–0. Taulien,Hans_Juergen (2350) – Jankowski,Volker (2150), remoteschach.de, 2003.

4.e3 Be7 5.c4 Be6 (5...Bf5 6.cd5 (6.d4 Bb1 7.Qb1 Bb4 8.Kd1 Ne7 9.a3=; 6.Nf3; 6.Nc3; 6.Qb3) 6...Qd5 7.Nc3 Qd7 8.Bc4 Nh6 9.e4=; 5...a6 6.cd5 (6.Nc3; 6.Qb3; 6.ba6) 6...Qd5 7.Nc3 Qd8 8.Nf3 ab5 9.Bb5=) 6.cd5 Qd5 7.Nf3 Nd7 8.Nc3 Qd6 9.d4 =.

4.e3 f5 5.Be5+/– Nh6 6.Qh5 Nf7 7.Bb2 Qg5 8.Qg5 Ng5 9.c4 Be6 10.cd5 Bd5 11.Nc3 Bf7 12.Be2 (12.Bd3 Be6+-) 12...Bb4 13.Nf3 Nf3 14.Bf3 c6 15.bc6 (15.Ne2 0-0+-) 15...bc6? (better is 15...Nc6!? 16.a3 Ba5+/–) 16.Nb5!+- 0-0? (16...cb5 17.Ba8 Pinning (17.Ba8 Deflection)) 17.Nc7 Nd7 18.Na8 Ra8 19.Bc3 (better is 19.a3 Be7 20.Bc6 Rd8+-) 19...Bc3 20.dc3 (20.Bc6 Ba1 21.Ba8 Ba2+=) 20...Rc8 21.0-0 Nc5 22.Rfd1 Na4 23.a3 g5 24.h3 h5 Black intends g4 25.Rdc1 (25.Rac1 g4 26.Be2 Nc5+-) 25...g4 26.hg4 hg4 27.Be2 Rd8 28.Kf1 Kg7 29.Ke1 Rh8 30.Rab1 a5 (30...Nc5 31.f3+-) 31.Rb7 (31.Bf1 Rh1 32.c4 Nc5+-) 31...Kf6 (31...Nc5 32.Rb6 g3 33.fg3 Rh1 34.Kd2 Rh2+-) 32.c4 Nc5 33.Rc7?? (33.Rb6 Ke7+-) 33...Be8?? (better is 33...Rh1 34.Kd2 Nb3 35.Kc2 Nc1–+) 34.Rd1+- Ne4 (34...Ke6 35.Rd8 Rh1 36.Bf1+-) 35.Rd8 Kg5 36.Re7 Rh1 37.Bf1 Bg6 38.Re5 (38.Ra7 a4+-) 38...g3?? (better is 38...Bf7 39.Rd4 Bc4 40.Rc4 Rf1 41.Kf1 Nd2 42.Ke2 Nc4+-) 39.f3 Nc3 40.f4 Kf6 41.Rd6 (worse is 41.Ra5 Ke7 42.Rg8 Bf7 43.Ra7 Kf6+-) 41...Kf7 42.Ra5 Bh5 (42...Kg7 43.Ra7 Kh6 44.Rc6+-) 43.Ra7 Ke8 (43...Kf8 44.Rd8 Be8+-) 44.Rh6 Nd1 45.Rh8 1–0. forsetinn – bobby1981, gameknot.com, 2013.

4.e3 Kf7 5.c4 (5.d4 ed4 6.Bd4 c5=) 5...c6 (5...Be6 6.cd5 Qd5 7.Nc3=) 6.cd5 cd5 7.Nf3 (7.d4 Bb4 8.Bc3 Qa5+=) 7...h5 (7...Bb4 8.Qb3 Qd6 9.a3+=) 8.Be2 (8.d4 e4 9.Nfd2 h4+=) 8...h4 9.h3 Bf5 (9...a6 10.0-0+=) 10.0-0 Nd7 (10...Bd6 11.d4 e4 12.Nfd2+=) 11.Ne1 (11.Nc3 Ne7+=) 11...Bd6 (11...Rc8 12.d4+=) 12.d3 (12.d4 Ne7+=) 12...Nc5 (12...Rc8 13.Bg4 Bg4 14.Qg4=) 13.Nc3 (13.d4 Ne6+=) 13...Ne7 14.Bf3 (14.d4 Ne6 15.de5 Be5+=) 14...e4 15.de4 (15.Be2 Rc8+=) 15...de4= 16.Bh5 (16.Be2 Qd7=) 16...Kf8 17.Bg4 (17.Be2 Qc7=) 17...Bg4 (better is 17...Be5 18.Bf5 Qd1 19.Rd1 Nf5=) 18.f3?? (better is 18.Qg4 Qc8 19.Qe2=) 18...Bh5–+ 19.Qc2 (19.Ba3 Be5 20.Qc2 Rc8 21.Ne4 Nd7–+ (worse is 21...Ba1 22.Bc5 Qd5 23.Nd3–+)) 19...Nf5 (19...Nf5 20.Rf2 Rc8 21.Ne4 Ne3–+). Mensch – Computer, Chess Game, 2017.

4.e3 h5 5.Be2 g6 6.c4 a6 7.cd5 Qd5 8.Nf3 ab5 9.Nc3 Qe6 (9...Qd8 10.Bb5 c6 11.Be2+=) 10.Bb5 c6 11.Ba4 Bb4 12.Bb3 Qg4 (12...Qd6 13.d4+=) 13.0-0 Nh6 (13...b6 14.h3 Qd7 15.Na4+/–) 14.h3+/– Qf5 (14...Qd7 15.d4 ed4 16.Ne4+/– (worse is 16.Qd4 Qd4 17.ed4 g5+=)) 15.Bc2+- Qe6 16.Bg6 Ke7 17.Qb3 (better is 17.d4!?+-) 17...Qd7?? (better is 17...Qb3 18.ab3 Ra1 19.Ra1 Rg8+/–) 18.Qb4+- (18.Qb4 Qd6 19.Qe4+-) 1–0. GuestPKCH – sindoseijo, freechess.org, 2017.

4.e4 a6 5.Nc3 (5.ed5 Qd5 6.Nc3 Qd8=) 5...de4 (5...d4 6.Nb1+=) 6.Ne4= ab5 (6...Bf5 7.Ng3 Be6 8.Qh5 Bf7 9.Qe2 ab5 10.Qb5 Nd7 A) 11.Qb7? Rb8 (11...Ba2 12.Qe4 c6 13.Qc6+=) 12.Qa6 Rb2–+; B) 11.Bc4=) 7.Bb5 c6 8.Bc4 b5 (8...Bf5 9.Ng3 Bg6 10.Nf3=) 9.Bb3 (9.Bg8 Rg8 10.Qh5 g6 11.Qh7=) 9...c5 (9...Bf5 10.Ng3 Nh6 11.Nf5 Nf5 12.Qg4=) 10.d3 (10.Bg8 Rg8 11.Qh5 Ke7 12.Qh7 Qd5+=) 10...c4 (10...Be7!?=) 11.dc4+= Bb4? (better is 11...Qd1!? 12.Rd1 b4+/–) 12.c3+- Qa5?? (better is 12...Qd1 13.Bd1 Be7 14.cb5 f5+-) 13.cb4 Qb4 (13...Qd8 14.Nd6 Ke7 15.Nc8 Qc8 16.cb5 Nh6+-) 14.Bc3 Qe7 (14...Qf8 15.Nd6 Kd8 16.Bb4+-) 15.Nd6 Kd8 16.cb5 Bd7 (16...Nh6 17.Nf7 Ke8 18.Nh8+-) 17.Bb4 Nc6 18.bc6 Bc6 19.Nf7 Ke8 20.Be7 Ke7 21.Qd6 Ke8 22.Qc6 1–0. pierre – jd, internet, 2010.

4.Nf3 Bb4 5.e3 Ne7 6.c4 Be6 7.a3 Ba5 8.Qa4 c6 9.Bc3 Bc7 10.d4 e4 11.Nfd2 Nd7 12.bc6 bc6 13.Bb4 Nb6 14.Qc2 0-0 =.

4.Nf3 Bc5 5.e3 Ne7 6.d4 ed4 7.Nd4 0-0 8.Bd3 Bd4 (8...a6 9.c4=) 9.Bd4+= Bf5 10.Bc5 Bd3 11.Qd3 c6 12.c4 Nd7 13.Be7 Qe7 14.cd5 Qb4 15.Nc3 cb5 16.Rb1 Ne5 17.Qd4 (17.Rb4? Nd3 18.Kd2 Nb4–+) 17...Qd4 18.ed4 Nc4 19.Rb5 Rac8 20.Rc5 (20.Ke2 Rfe8 21.Kd3 b6+/–) 20...b6 21.Rc6 Rfd8 (21...Na5 22.Rc8 Rc8 23.Kd2+=) 22.0-0 (22.Ke2 Na5 23.Rc8 Rc8+/–) 22...Na5+= 23.Rc8 Rc8 24.Nb5 a6 25.Nd6 Rd8 26.Nf5 Kf7 (26...Nc4+=) 27.Re1 (better is 27.Rc1!? Kg6 28.Ne7 Kg5 29.Rc7+/–) 27...Rd5+= 28.g4 g6 29.Re7 Kf8 30.Ne3 Rd4 31.Rh7 (31.Re6!? Nc4 32.Nc4 Rg4 33.Kf1 Rc4 34.Rf6 Ke7 35.Rb6+=) 31...Nc4–/+ 32.Kf1 Ne3 33.fe3 Rg4 34.Rb7 b5 35.Rb6+= Ra4 36.Rf6 Kg7 37.Rf2= Ra3 38.Re2 Kf6 39.Kf2 b4 40.Kf3= Kf5 41.h3 a5 42.Rc2 Rc3 43.Rd2 Ke5 44.h4 a4 45.Rd4= Ra3 46.Rb4 Ra2 47.Rb5 Kf6 48.Ke4 Rh2–/+ 49.Rb6 Kg7 50.Rb7 Kh6 51.Ke5 Rh4 52.Ra7 Rb4 53.e4 Kg5 54.Ra6 ½–½. Mezheritsky,Yuri (2090) – Ignatchuk,Viktor, Kiev Independence Cup op, 1998. (=1.Nf3 d5 2.b4 f6 3.Bb2 e5 4.b5)

4.Nf3 d4 5.e3 Bd7 (5...de3 6.fe3 Nd7 7.Be2=) 6.Nh4 (better is 6.ed4 e4 7.Nh4+=) 6...Bb5?? (better is 6...Be6=) 7.Qh5 (< 7.Bb5 c6 8.Qh5 Kd7+-) 7...Ke7 8.Bb5 de3 (8...Nh6 9.ed4 c6 10.Bc4+-) 9.fe3 (9.Ba3 c5 10.Bc5 Ke6 11.Qg4 f5 12.Qf5 Kd5 13.Bf8 ef2 14.Kf1+-) 9...g5 (9...Nh6+-) 10.Ng6! Kd6 (10...hg6 11.Qh8) 11.Nh8 c6 (11...Nh6+-) 12.Nf7 Kd7 13.Nd8 Kd8 14.Qh7 (14...Nd7 15.Bc6 bc6 16.Qg8+-) 1–0. baqua – Robespierre, Live Game Caissa's Web, 2004.

4.Nf3 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 f6).

4.Nf3 Bd7 5.e4 de4 6.Ne5 fe5 (better 6...Bf5 7.Nc4 Nd7=) 7.Qh5+- g6? (better 7...Ke7 8.Qe5 Kf7 9.Qd5 Kg6 10.Qb7 Nc6 11.bc6 Rb8 12.Qa7 Rb2 13.cd7 Qd7+-) 8.Qe5+- Qe7 9.Qh8 c6 (9...Be6+-) 10.Qg8 cb5 11.Qh8 (11.Nc3 Be6 12.Bb5 Nc6 13.Bc6 bc6+-) 11...Na6 (11...b4 12.Bc4+-) 12.Bf6 Qf7 (12...Qe6 13.Bg7 Kf7 14.Bh6 Bh6 15.Qa8+-) 13.Nc3 b4 (13...Nb4 14.Nb5 Bg4 15.Rc1+-) 14.Ne4 Bg4 (14...Qe6 15.0-0-0 Bc6+-) 1–0. DEFFM – GuestJHBD, freechess.org, 2019.

4.Nf3 e4 5.Nd4= Bc5 (5...Bd6 6.e3 Ne7 7.Qh5 g6 8.Qh6=) 6.e3 Ne7 (6...Nh6 7.d3 Bg4 8.Be2 Be2 9.Qe2 Bd4 10.ed4+=) 7.d3 White fights for the Initiative 7...f5 8.Qh5 g6 9.Qh6 a6 (9...Rf8!?+=) 10.Ne6!+/– Be6 11.Bh8 Bg8 (11...ed3 12.Bd3 d4 13.Qh7 de3 14.fe3+/–) 12.d4 (12.a4 Bb4 13.Nd2 ab5 14.ab5 Nd7+-) 12...Bb4 (12...Bd6 13.Bf6+/–) 13.c3 Bd6 14.ba6 Na6 15.Nd2 (15.Bf6 Qd7+-) 15...Kd7 (15...Qd7 16.Bf6+-) 16.a4 (16.Rb1 b6+-) 16...Be6 17.Be5 (17.Bf6 Qf8 18.Bg7 Qg8+-) 17...Qg8 (17...Be5 18.de5 Qh8+-) 18.Bd6 Kd6 19.Rb1 (19.Nb3 g5 20.Ba6 ba6+-) 19...b6 20.a5 ba5 21.Bb5 Do you see the mate threat? 21...Nb8?? (21...Nc8+-) 22.Qf4 1–0. pierre – First Knight, ChessHere.com, 2005.

4.Nf3 Ne7 5.e3 a6 6.d4 e4 7.Nfd2 ab5 8.Bb5 c6 9.Be2 b5 10.Ba3 Ra4 11.c3 Qa5 12.Nb3 Qa8 13.Bd6 Ng6 14.Bf8 Nf8 =.

4.Nf3 Bf5 5.e3 (--> 4.e3 Bf5 5.Nf3).

4.Nf3 Nh6 5.e3 Be7 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 0-0 10.0-0 Be6 11.d4 e4 12.Nfd2 Qe8 13.c4 Qg6 14.f3 ef3 =.

4.Ba3 Ba3–/+

5.Na3 Ne7 6.c4 =+.

5.Na3 Bf5 6.c4 Qd6 7.Qb3 d4 8.d3 Nd7 9.Nc2 Nc5 10.Qa3 a5 11.Nb4? Ne7 12.g3 0-0 13.Nd5?? Nd5 14.cd5 Qd5 15.f3 b6 16.Bg2 Qe6 17.g4 Bg6 18.f4 Qg4 19.Ba8–/+ Qh4 20.Kd1 Ra8 21.fe5 Qg4 22.ef6= Nd3 23.Qd3?? Bd3–+ 24.Nf3 Be4 25.Rg1 Qf4 26.Rg7 Kf8 27.Rc1 Bf3 28.Rcc7 Bd5 29.Rh7 Qf6 30.h4 Re8 31.h5 Qe5 32.e3 de3 33.Rhd7 Qd4 34.Kc2 Qd2 (34...Qd2 35.Kb1 e2 36.Rf7 Bf7 37.Rf7 Kf7 38.h6 e1Q; 34...Be4 35.Kc1 Qa1) 0–1. pinecrest1981 – rooku3, Caissa.com, 2004.

5.h4?? Bb2–+ 6.Na3 (6.Nc3 d4 7.Ne4 Ba1 8.Qa1 a6–+) 6...Qe7 7.Rb1 Qa3 8.Rh3 (8.e4 de4 9.Bc4 Bd4 10.Qh5 g6–+) 8...Bh3 9.gh3 Qa2 10.Nf3 (10.c3 d4 11.cd4 Bd4–+) 10...e4 11.Nd4 (11.c3 Bc3 12.dc3 ef3 13.ef3 Ne7–+) 11...Bd4 12.c3 Bc5 (12...Bb6 13.Ra1 Qb2 14.Qb1 Qb1 15.Rb1–+) 13.Rc1 Nd7 (13...Bd6 14.Ra1 Qb2 15.Qb1 Qb1 16.Rb1–+) 14.e3 Ne5 15.Bg2 Nd3 16.Ke2 Qc4 17.Rc2 Nf4 18.Ke1 Ng2 0–1. mixalis – Caissa, Live Game Caissa's Web, 2004.

4.a4 b6

5.e3 Bb7 6.c4 dc4 7.Nf3 (7.f3 Bd5=) 7...Bd5 8.Qc2 Bc5 (8...e4!? 9.Nd4 c5=) 9.Bc4+= Bc4 10.Qc4 Ne7 11.0-0 Qd5 12.Qd5 Nd5 13.d4 ed4 14.Nd4 (14.Bd4 Bd4 15.Nd4 a6+=) 14...Bd4 15.Bd4 (15.ed4 a6=) 15...Kf7 (15...c5 16.e4 Nb4 17.Bc3=) 16.Rc1 Nd7 (16...c5!? 17.bc6 Rc8=) 17.Nc3 (17.e4 Ne7 18.Rc7 Rac8 19.Rc8 Rc8+-) 17...Nc3 (17...Ne7 18.Ne4+-) 18.Rc3 (18.Bc3?! a6=) 18...Rac8 (18...Rhc8 19.Rac1+-) 19.Rac1+- Ne5? (better 19...Ke7+-) 20.Be5 (20.Rc7 Rc7 21.Rc7 Kg6+-) 20...fe5 21.Rc7 (21.Rc7 Rc7 22.Rc7 Kf6 23.Ra7+-) 1–0. RichardSommer (1945) – zpro (1935), lichess.org, 2020.

5.e3 Bd6 6.Qh5 g6 7.Qd1 Ne7 8.Nf3 0-0 9.c4 c6 10.Nc3 cb5 (10...e4!? 11.Ng1 Be6=+) 11.ab5+= a6 (11...Be6 12.Qb3=) 12.cd5 Nd7 (better is 12...a5!?+=) 13.ba6+- Nc5 14.Nb5 (14.a7 e4 15.d4 ef3 16.dc5 fg2 17.Bg2 bc5+-) 14...Ba6 (14...Ra6 15.Ra6 (< 15.Nd6 Ra1 16.Qa1 Qd6+=) 15...Na6 16.e4+/–) 15.Nd6+= Qd6 16.Ba6 (16.d4 Bf1 17.dc5 Ra1 18.Ba1 Qc5 19.Rf1 Qa5 20.Nd2 Nd5+-) 16...Ra6 17.Ra6 Na6 18.d4 (18.e4 Nc5 19.Qb1 Na4+/–) 18...e4 (better is 18...Qb4!? 19.Qd2 e4 20.Qb4 Nb4=+) 19.Nd2+= Qd5 20.0-0 (20.Qb1 Nb4 21.Ne4 Qc4+/–) 20...Nf5 (20...f5!?=) 21.Qc2+/– Re8 22.Ba3 b5 23.Nb3 b4= 24.Bb2 Nh4 25.Ra1 Nc7 26.Nc5 Qg5 27.f4?? ef3–+ 28.g3? Qe3 29.Qf2 Qf2 30.Kf2 Re2 31.Kf1 Rb2 32.gh4 Rh2 33.Ne4 Rh1 34.Kf2 Ra1 35.Kf3 b3 36.Nf6 Kf7 37.Ne4 b2 38.Nc3 Rc1 39.Na2 Rf1 40.Ke4 b1Q 41.Ke5 Qa2 42.h5 Qd5 0–1. TIROLOCO – chaser, Live Game Caissa's Web, 2004.

5.e3 Nd7 6.Bd3 (better is 6.Nc3 Ne7 7.a5=) 6...e4?? (better is 6...Ne7=) 7.Qh5+- g6 8.Qd5 ed3 9.Qa8 (9.Qa8 dc2 10.Qe4 Ne5 11.Qc2+-) 1–0. Wall,Bill – Improving, chess.com, 2008.

5.Nf3 Bc5 6.e3 c6 7.c4 cb5 8.ab5 Nd7 9.Qb3 dc4 10.Bc4+/– Ne7 11.Bf7 Kf8 12.Bh5 g6+= 13.Bg4 Bb7 14.Nh4 f5 15.Bf3+/– e4? 16.Be2?? Bd5+= 17.Qc3 Rc8?? 18.Qh8+- (18.Qh8 Bg8 19.Qg7 Ke8 20.Nf5 gf5 21.Bh5 Ng6 22.Qg8 Ndf8 23.Ra7+-) 1–0. TONDA – 10012006, Live Game Caissa's Web, 2006.

4.a4 Ne7

5.e3 Nd7 6.d3 b6 (6...Nf5 7.e4 Ne7 8.Nf3=) 7.Nf3= Bb7 8.Be2 Ng6 9.0-0 Bd6 10.Nbd2 0-0 11.Re1 Rc8 12.c4 c6 13.cd5 cd5 14.e4 Nf4 15.g3 de4 (15...Ne2 16.Re2 Nc5 17.Nb3-/+) 16.Ne4 (16.de4 Ne2 17.Qe2 Rc2=+) 16...Ne2-/+ 17.Re2 Be7 (17...Nc5 18.Re3-/+) 18.d4 ed4 (18...f5 19.Qb3 Kh8 20.Ned2-/+) 19.Nd4= Nc5 20.Nc6 (20.Nc3!? f5 21.Rd2=) 20...Bc6-/+ 21.bc6 Qd1 22.Rd1 Rc6 23.Nc5 Bc5 24.Red2 (24.Rd7 a6=+) 24...h5 25.Rd7 a5 26.Rb7 Re8 (26...Kh7!?-/+) 27.Rdd7= Re1 28.Kg2 Re2 29.Rg7 Kf8 30.Rbf7 (30.Bc1 Re7 (30...Bf2? 31.Bh6 Be3 32.Kf3 Bh6 33.Rgf7 Kg8 34.Ke2+-; worse 30...Rf2 31.Kh3 f5 32.Rgf7 Kg8 33.Bf4+=) 31.Rge7 Be7+=) 30...Ke8 31.Bf6?? (better 31.Ra7 Re7 32.Ra8 Kd7 33.Rg6+=) 31...Rf2-+ 32.Kh3 Rff6 (32...Rcf6 33.Rb7 Rf7 34.Rg8 Rf8 35.Rg5-+) 33.Rb7 Rc8 34.Rh7 Rf8 (34...Rf5!? 35.Rh8 Bf8 36.Rhh7-+) 35.Rh5 Bg1 (better 35...Rf6-+) 36.Re5= Kd8 37.Rd5 Ke8 38.Re5 Kd8 39.Rd5 Ke8 40.Re5 Kd8 41.Rd5 Ke8 42.Re5 ½-½. brucepeng (2030) - AgustinGonzalez_CAQ (2025), lichess.org, 2020.

5.e3 g6 6.c4 dc4 (6...Be6 7.d4 ed4 8.Bd4=) 7.Bc4 Bg7 8.Nf3 Nf5 9.0-0 Nd6 10.Bb3 Nd7 11.Nc3 Nc5 12.Ba2 (12.Bd5+=) 12...Be6? (12...Nd3 13.Ba3 f5+-) 13.d4+- Ba2 14.dc5 (14.Na2?! Nd7+=) 14...Ne4? (better 14...Bc4 15.cd6 Bf1+-) 15.Ne4 Bd5 (15...Bc4 16.Re1+-) 16.Nc3 (16.Nc3 Bc4 17.Re1+-; 16.Nd6! cd6 17.Qd5 dc5 18.Qb7 0-0+-) 1–0. RichardSommer (2045) – Victor0610 (2005), lichess.org, 2020.

4.d4 c5

5.bc6 Nc6=+ 6.e3 Be6 7.Bb5 Bd6 8.Nf3 Nge7 9.de5 fe5 10.Be5? Bb4?? 11.c3+- Ba5 12.Nd4 0-0?? 13.Ne6 Qb6 14.Bg7 Qb5 15.Qg4 Ng6 16.Bf8 Qb2 17.0-0 Qa1 18.f4 Rf8 19.f5 Bb6?? 20.Nf8+- Be3 21.Kh1 Kf8 22.fg6 Kg7 23.gh7 Kh7 24.Rf7 Kh8 25.Qh5 Bh6 26.Qh6 Kg8 27.Rg7 Kf8 28.Qf6 Ke8 29.Qe6 Kd8 30.Qd6 Kc8 31.Rg8 Nd8 32.Qe6 Kc7 33.Qe5 Kb6 34.Rg6 Nc6 35.Rc6! bc6 36.Qd4 c5 37.Qd1 Qa2 38.h3 Qc4 39.Nd2 Qd3? 40.Qb1 Kc6 41.Qd3 c4 42.Qc4! dc4 43.Nc4 Kc5 44.Na5 Kb5 45.Nc6! Kc6 46.c4 1–0. iczker – talnahaju, internet, 2011.

5.e4 cd4–/+ 6.ed5 Qd5 7.c3 Qe4 (7...Bf5 8.cd4 Bb4 9.Bc3 Bc3 10.Nc3 Qd4 11.Nd5=) 8.Qe2+= Qe2 9.Be2 dc3 10.Nc3 Bb4 11.a3 Ba5 12.0-0-0 (12.Rd1 Ne7+=) 12...a6–/+ 13.Ne4 White fights for the Initiative 13...Nd7 (13...Ke7 14.Nd6 Nh6 15.Kb1–/+) 14.Nd6+= Ke7 15.f4 Nh6 16.fe5 Ne5 17.Be5 (17.ba6 ba6 18.Nf3 Bg4+=) 17...fe5–/+ 18.ba6 ba6 19.Nf3 Bc7 20.Nc4 Bg4 (20...e4 21.Nfe5–+) 21.h3 Bf3 22.Bf3 Rab8 23.Rhe1 Rhc8 24.Bc6 Rd8 (better is 24...Nf7!?–/+) 25.Rd8= (25.Ne5?? Rd1 26.Rd1 Be5 27.Rd7 Ke6–+) 25...Kd8 26.Ne5 (26.Re5? Be5 27.Ne5 Rb3–+) 26...Rb3?? (better is 26...Be5 27.Re5 Rb3 28.Re8 Kc7=) 27.Nf7!!+- (27.Nf7 Kc8 28.Re8 Bd8 29.Nd8 Rc3 30.Kb2 Rc6 31.Nc6 Kd7 32.Re7 Kc6 33.Rg7+-) 1–0. Rosner,Dirk – Smiley,William, CiF, 1990.

5.de5 d4 6.e3 Qa5 7.Nd2 +=.

4.e3 Qd7

5.c4 Ne7 6.Nc3 d4 7.Ne4 de3 8.fe3 (8.de3 Ng6=) 8...Qg4 (8...Ng6 9.Nf3=) 9.Qg4 Bg4 10.Be2 Bf5 11.Ng3 Be6 12.Nf3 Nd7 (12...Ng6 13.0-0=) 13.0-0 (13.d4 Ng6=) 13...0-0-0 (13...a6 14.a4=) 14.Ne4 (14.d4 ed4 15.ed4 Ng6=) 14...Bf5 (14...Nb6 15.d3=) 15.Nc3 Nc5 16.d4 ed4 17.Nd4 (better is 17.ed4 Ne6 18.Rae1=) 17...g6 (better is 17...Bd3!?=) 18.Nf5 Nf5 (18...gf5 19.Ba3 Ne6 20.Rad1+/–) 19.Nd5 Bg7 20.Bf6 (better is 20.Bg4 Rhe8 21.Bf6 Bf6 22.Nf6+/–) 20...Bf6= 21.Nf6 Rd6? (21...Ne3!? 22.Rf3 Nf5=) 22.Nd5 (22.e4 Rf6 23.ef5 Re8+/–) 22...Re8+= The isolani on e3 becomes a target 23.Bg4 Kb8? (better is 23...c6 24.Nb4 Re5+/–) 24.Bf5+- gf5 25.Rf5 Ne4 (25...c6 26.Nb4 Ne4 27.bc6 bc6 28.Rf7+-) 26.Raf1 Nd2 (26...Kc8 27.Rf7 c6 28.bc6 bc6 29.Rc7 Kd8 30.Ra7 cd5 31.Rff7+/–) 27.Rf8 (27.Nf6 Red8 28.R1f4 h6+-) 27...Rc8 (27...Red8 28.Rd8 Rd8 29.Rf7 Nc4 30.Rh7+-) 28.Rc8 (28.Ne7!? Rcd8 29.R1f4 h5+-) 28...Kc8 29.Rf8 Kd7 (29...Rd8 30.Rf4 c5 31.Nf6+-) 30.Rf7 Ke6 (30...Kd8 31.Nc7 Nc4 32.Rh7 Ne3 33.h4+-) 31.Re7 (worse is 31.Rh7 Nc4 32.Nc7 Kf5+-) 31...Kf5 32.Rh7 (better is 32.e4 Kg5 33.c5 Rd8 34.Re5 Kg6 35.Nc7 Rf8+-) 32...Nc4 33.Rf7 (better is 33.Rc7!? Rd5 34.Rc4 Rb5 35.Ra4+-) 33...Ke6+/– 34.Re7?? (better is 34.Rc7 Kd5 35.e4 Kd4 36.Rb7+=) 34...Kd5+= 35.e4 (better is 35.Rc7 Rb6 36.Rd7 Nd6 37.a4–/+) 35...Kc5?? (better is 35...Kd4!? 36.Rc7 Rb6–/+) 36.Rc7= Kb5 (36...Kb4 37.Rb7 Rd1 38.Kf2 Rd2 39.Kf3 Ra2 40.h4=) 37.Rb7 (better is 37.a4!? Kb4 38.Rb7 Ka4 39.Ra7 Kb5 40.h4+=) 37...Ka6+= 38.Rb8 (38.Rb4 Rd1 39.Kf2 Rd2 40.Kg3 Ne3 41.Ra4 Kb6=) 38...Ne3 (better is 38...Re6!?–/+) 39.Kf2= Ng4 (39...Rd3 40.h3=) 40.Kg3+= Ne5 (40...Nf6 41.e5 Rd3 42.Kf4 Nd5 43.Ke4+=) 41.Kf4 Nd3 42.Ke3 Nc5 (42...Nc1 43.h4 Rd3 44.Kf4 Ne2 45.Ke5+/–) 43.Rb2 Rd3 44.Kf4 Ne6 (44...Ra3!? 45.Re2 Ra5+=) 45.Kf5+/– Nd4 46.Kf4 (46.Kf6 Rd1+/–) 46...Ne6 47.Kf5 Ng7 (47...Nd4 48.Kf6 Rd1+/–) 48.Kf6 (48.Ke5 Rd8+/–) 48...Ne8 49.Kf5 Nc7?? (49...Ng7 50.Ke5 Rd8+/–) 50.Rc2 (50.h4!? Rd8+-) 50...Nb5+/– 51.Kf6 Rc3 (51...Nd4 52.Rb2+/–) 52.Rd2 (52.Rc3 Nc3 53.e5 Na2+-) 52...Rc6+/– 53.Kf5 Rh6 (53...Rd6 54.Rd6 Nd6 55.Ke5 Nc4 56.Kf4+-) 54.h3 (54.g4!? Nd6 55.Kf4 Nc4+-) 54...Rh5 55.Kf4 (55.Kg4 Rc5 56.Kf4 Kb6+/–) 55...Nc7 (55...Rh4 56.Ke3+=) 56.e5+/– Ne6 57.Ke4 Nc5 (better is 57...Kb5+/–) 58.Kf4 (better is 58.Kd5!? Na4 59.Rc2+-) 58...Kb5 (58...Ne6 59.Kf3 Re5 60.h4=) 59.Rc2 (59.Re2 Ne6 60.Ke4 Rh4 61.Kf5 Nd4 62.Kg5 Rh8=) 59...a5 (59...Ne6 60.Ke4=) 60.Rc3 Rh8 (60...Kb4 61.Re3 Ne6 62.Ke4+=) 61.g4 (61.Re3!?+=) 61...Rf8= 62.Ke3 Rh8 63.Kd4 Ne6 (63...Rd8 64.Ke3=) 64.Ke4+= Ng5 (64...Rf8 65.Kd5 Nf4 66.Kd6 Rd8 67.Ke7+=) 65.Kf5+/– Nh3 66.e6 Rf8 67.Ke5 Ng5 (better is 67...Nf2 68.g5 Ng4 69.Kd6 Rd8 70.Kc7 Re8+-) 68.Kd5 (better is 68.e7!? Re8 69.Kf5 Re7 70.Kg5+-) 68...Re8 (68...Rd8 69.Ke5 Re8 70.Rb3 Kc4 71.Ra3=) 69.Rc5 (69.Rb3 Ka4 70.Re3 Ne6 71.Re6 Rg8+=) 69...Kb6 (69...Kb4 70.Rc6=) 70.Rc6 Kb7 (70...Kb5!?=) 71.Rd6+= Kc7 (71...a4 72.Rd7 Kc8 73.Ra7 Re6 74.Ra4+/–) 72.Rd7 (72.Ra6 Rd8 73.Ke5 Re8+/–) 72...Kb6 (72...Kc8 73.Ra7 Ne6 74.Ra8 Kd7 75.Re8 (worse is 75.Ra5 Rg8 76.Ra7 Nc7 77.Ke5 Rg4+=) 75...Nc7 76.Kc5 Ne8 77.Kb5+=) 73.e7+/– Nh7? (better is 73...a4!?+/–) 74.Kd6 (74.Ke6!? Ng5 75.Kf6 Ne4 76.Kf7 Rc8+-) 74...Nf6 75.Rd8 Ne4? (75...Re7 76.Ke7 Ng4+-) 76.Ke6 Nc5 77.Kf7 Re7 78.Ke7 Ne4 79.Rd5 Nc3 80.Re5 Na2 81.g5 a4 (81...Nb4 82.Re6 Kc5 83.g6+-) 82.g6 Nb4 83.Re6 Nc6 (83...Kc5 84.g7 a3+-) 84.Kd7 Kb5 (84...Kc5 85.Rc6 Kd5 86.g7 a3 87.g8Q Ke4 88.Rc3 Kd4 89.Qg7 Kd5 90.Qg5 Ke4 91.Ke6 a2 92.Qe5) 85.Rc6 a3 (85...Ka5 86.g7 Kb5 87.g8Q Kb4 88.Qc4 Ka3 89.Qd3 Kb2 90.Rc2 Ka1 91.Qd1) 86.Rc1 (86.g7 Ka5 87.g8Q a2 88.Qc4 a1Q 89.Ra6) 86...a2 87.Ra1 1–0. GuestCHGY – mosinski, freechess.org, 2016.

5.Nf3 a6 6.a4 Bb4 7.c4 a5 (7...ab5 8.ab5 Ra1 9.Ba1 dc4 10.Bc4=) 8.Nc3 d4 (better is 8...Ne7!?=) 9.ed4+/– ed4 10.Nd5 Qe6 (10...Bd6!?+/–) 11.Be2+- Kd7 (better is 11...Qd6!?+-) 12.Nd4 Qe4 13.0-0 c6?? (13...Kd8+-) 14.Bg4 (better is 14.Nb6 Kd8 15.Na8 Nh6+-) 14...Kd8 15.Bc8 cd5 16.Re1 Qh4 17.Bb7 Ra7 18.Ne6 Kd7 19.g3 (better is 19.Bd5 Kc8+-) 19...Qc4 (19...Qh6 20.Bd5 Kc8+-) 20.d3 Qc3 (20...Qb5 21.ab5 Rb7+-) 21.Bc3 Bc3 22.Qb3 Ba1 23.Qd5 Ke8 (23...Ke7 24.Nd4 Kf8 25.Qd8 Kf7 26.Qe8) 24.Nc7 Kf8 25.Re8 1–0. Kortis – belle, internet, 2016.

5.Nf3 Bc5 6.Be2 Ne7 (better 6...Bd6=) 7.Be5?? (better 7.d4 ed4 8.Bd4 Bb4 9.c3+=) 7...fe5–/+ 8.Ne5 Qf5 9.d4 Bd6 10.Bd3 Qe6 11.f4 Be5 (11...0-0 12.0-0–+) 12.fe5 (12.Qh5 Kd8 13.fe5–/+) 12...Qg4 (better 12...0-0!?–+) 13.Qg4=+ Bg4 14.0-0 (14.e4 a6=+) 14...Nd7 (14...c5 15.bc6 Nbc6 16.Nc3–/+) 15.Rf4 (15.e4 Rd8=+) 15...Be6–/+ 16.Nd2 (16.e4 c5 17.bc6 bc6–/+) 16...0-0-0 (16...a6 17.ba6 ba6 18.Raf1–/+) 17.Raf1=+ Rdf8 18.Rf8 Rf8 19.Bh7 (19.Rf8!? Nf8 20.a3=+) 19...Rf1–/+ 20.Kf1 c6 (better 20...g6–+) 21.bc6 Nc6 22.a3 Na5 (22...Kd8 23.Nf3=) 23.Bd3+= Kc7 24.h3 Kb6 (24...a6 25.e4+=) 25.g4 (25.e4 de4 26.Be4 Kc7+-) 25...Nf8 (25...Kc7 26.Bf5 Bf5 27.gf5+=) 26.Bf5 (26.e4 de4 27.Be4 Nc4 28.Nc4 Bc4 29.Kf2 g5+-) 26...Bf5 (26...Kb5 27.Ke2+-) 27.gf5+- Nc4 (27...Kc6 28.h4+-) 28.Nc4+- dc4 The passed pawn on e5 will quickly become a dangerous weapon 29.Kf2 Kb5 (29...Kc7 30.e4+-) 30.Kg3 Ka4 (30...c3 31.e4+-) 31.Kg4 (31.d5!? Kb5+-) 31...Ka3 32.Kg5 Kb2 (32...b5 33.e6 b4 34.e7 Nh7 35.Kg6+-) 33.e6 Kc2 34.e7 (34.e7 Nh7 35.Kg6+-) 1–0. aravind555 (1640) – Zambot3 (1620), lichess.org, 2020.

4.e4 Bb4

5.a3 A) 5...Ba5 A1) 6.Bd3 de4 (6...Ne7 7.Nc3 0-0 8.ed5 a6 9.Qf3 Bc3 10.Bc3 ab5 11.Bb4 Na6; 6...Be6 7.Qh5 g6 8.Qh4 d4 9.f4 c5 10.f5 gf5 11.ef5 Bf7; 6...Nd7 7.ed5 Ne7 8.Nc3 0-0 9.Nf3 Nb6 10.0-0 Bf5 11.Qe2 Bc3; 6...d4 7.Nf3 Nd7 8.0-0 Nc5 9.Bc4 Ne7 10.Qe2 Be6 11.Be6 Ne6; 6...Qd6 7.Nf3 Ne7 8.0-0 Nd7 9.ed5 0-0 10.Bc3 Bc3 11.Nc3 Nb6) 7.Be4 Ne7 8.Nc3 Nd7 9.Nge2 Nc5 10.0-0 0-0 11.Ng3 f5; A2) 6.ed5 Ne7 (6...Qd5 7.Nc3 Bc3 8.dc3 Ne7 9.Qd5 Nd5 10.0-0-0 Be6 11.Bd3 Nd7) 7.c4 0-0 8.Nf3 a6 9.a4 c6 10.dc6 bc6 11.Nc3 Nd7; A3) 6.Qh5 g6 (6...Kf8 7.Nc3 Ne7 8.ed5 Nd5 9.Bc4 Be6 10.Nge2 Bc3 11.Bc3 Nd7) 7.Qh4 de4 8.Qe4 c6 9.Nf3 Bf5 10.Qc4 cb5 11.Qb5 Nc6; A4) 6.Nc3 Ne7 7.Qh5 Kf8 8.ed5 Nd5 9.Bc4 Be6 10.Nge2 Bc3 11.Bc3 Nd7; B) 5...Bc5 6.Nc3 Ne7 (6...d4 7.Na4 Nd7 8.Nf3 Ne7 9.Bd3 0-0 10.0-0 Kh8 11.c3 dc3; 6...c6 7.bc6 bc6 8.Qh5 g6 9.Qh4 Be6 10.Nf3 Nd7 11.Bd3 Ne7) 7.Qh5 Kf8 8.Nf3 Be6 9.Bd3 d4 10.Na4 Nd7 11.0-0 Qe8.

5.Nc3 Ne7 6.Qh5 Kf8 (6...g6 7.Qf3 Bc3 8.Bc3 0-0 9.Bb4 c6 10.Bd3 de4 11.Be4 cb5) 7.Bd3 d4 8.Nce2 Be6 9.f4 c5 10.fe5 Nd7 11.Nf3 Bf7.

5.Qh5+= g6 (5...Kf8 A) 6.Bd3 de4 (6...Nh6 7.Nc3 Bg4 8.Qh4 de4 9.Ne4 a6 10.Be5 Nd7 11.Bf4 f5; 6...Ne7 7.Nc3 d4 8.Bc4 Qe8 9.Qe8 Ke8 10.Nd5 Nd5 11.Bd5 a6; 6...Be6 7.Nf3 Ne7 8.Ne5 Nd7 9.Nd7 Qd7 10.0-0 Bg4 11.Qh4 Ng6; 6...Nd7 7.Nc3 Ne7 8.Nd5 Nd5 9.ed5 Nb6 10.c4 c6 11.Qf3 cd5) 7.Be4 Nh6 8.Nc3 Nd7 9.Qe2 Nc5 10.Nd5 Ne4 11.Qe4 Ba5; B) 6.Nc3 Ne7 7.Nh3 a6 8.a3 Bc3 9.Bc3 de4 10.Bc4 Qe8 11.Qe8 Ke8 12.a4; C) 6.a3 Bc5 7.Nc3+= Ne7 8.Nf3 Be6 9.Bd3 d4 10.Na4 Nd7 11.0-0 Qe8) 6.Qh4 (6.Qf3 Ne7 (6...c6 7.bc6 de4 8.cb7 Bb7 9.Qb3 Qb6 10.Nc3 Na6 11.Ba6 Ba6; 6...Nh6 7.ed5 0-0 8.Nc3 Nd7 9.Bc4 Nb6 10.Bb3 Bc3 11.Bc3 Bg4) 7.a3 Bc5= (7...Bd6 8.ed5 0-0 9.Nc3 Nd7 10.Bc4 Nb6 11.Bb3 a5) 8.Nc3 0-0 9.ed5 Nd7 10.Nge2 Nf5 11.Ne4 Bb6) 6...Qe7 (6...Ne7!? 7.Qf6 Rf8+= 8.Qe5 Nd7 9.Qg5 Nc5 10.Qh4 de4 11.Nc3 Be6; 6...Qd6 7.ed5 Ne7 8.a3 Bc5 9.Nc3 Bf5 10.Ne4 Be4 11.Qe4 0-0; 6...d4 7.c3 Bc5 8.cd4 Bd4 9.Bd4 Qd4 10.Nc3 Be6 11.Nf3 Qd6) 7.a3 (7.ed5 Bf5 8.c3 Bc5 9.Be2 Qd6 10.c4 Ne7 11.Nf3 0-0) 7...Bd6 8.Nc3 (8.ed5 Bf5 9.Be2 Bc2 10.Nf3 Bb3 11.0-0 f5) 8...de4 9.Ne4 a6 (9...Be6 10.Nf3+/– Nd7 11.Bd3 f5) 10.Nf3 (10.Bd3 ab5 (10...f5 11.Nd6 cd6) 11.Bb5 (11.Nf3 f5) 11...Bd7+/– (11...Nc6+/–)) 10...ab5 (10...f5 11.Neg5 h6) 11.Bb5 Nc6 (11...Bd7 12.Bc4+/–) 12.0-0+- Ra5 (12...Be6 13.Rfe1+-) 13.a4 Bd7 14.Bc3 Nd4?? (14...Ra8 15.Rab1 Kf8+-) 15.Ba5 Nf3 16.gf3 b6 (16...Kf7 17.Rfb1 Bb5 18.Rb5+-) 17.Bc3 c6 (17...Kf7 18.Rfe1 Kg7 19.f4+-) 18.Bc4 Kd8 19.d4 h5 (19...Bc7 20.Rfd1 g5+-) 20.Nd6 Qd6 21.de5 Qc5 22.ef6 Qc4 23.Qc4 Nf6 24.Bf6 Kc7 25.Rad1 Rf8 (25...Bc8 26.Bh8 Kb7 27.Rfe1 b5 28.Re7 Kb6 29.Bd4 Ka5 30.ab5 c5 31.Bc5 Be6 32.Ra7) 26.Be5 Kc8 27.Qa6 Kd8 28.Qa7 Rf7 29.Bf6! Ke8 (29...Rf6 30.Qd7 Mate attack) 30.Qb8 1–0. pierre – temisto, internet, 2011.

4.e4 Bc5

5.Nc3 Ne7 6.Qh5 (6.Nf3 a6 7.ed5 Nd5 8.Ne5 0-0 9.Bc4 Bf2 10.Kf2 fe5 11.Kg1 Be6 12.Qe1 (12.Qe2 Qd6 13.Nd5) 12...Nf4 (12...Qd6 13.Nd5) 13.Be6) 6...g6 (6...Kf8 7.Nf3 Be6 8.Bd3 Qe8 9.Qe8 Ke8 10.ed5 Nd5 11.Be4 c6 12.0-0) 7.Qh4 0-0 8.ed5 Nd5?? (better is 8...Bd4 9.Nf3 Nf5= (9...Bc3 10.dc3 a6 11.0-0-0 ab5 12.Bb5) 10.Qe4 Nd7 11.Ba3 Bc5 12.Bc5; 8...Bf5 9.Qc4 Bd6 10.g4 Bc8 11.Nf3 Nd7 12.Rg1) 9.Nd5+- Qd5 (9...Be6 10.Ne3 a6+-) 10.Bc4 c6 (10...Be6 11.Bd5 Bd5 12.Ne2+-) 11.Nf3 Be6 (11...Nd7 12.0-0+-) 12.Bd5 Bd5 13.c4 Be6 (13...Bf3 14.gf3 Nd7 15.bc6 bc6 16.0-0+-) 14.0-0 Nd7 (14...a6 15.ba6 Ra6 16.Be5+-) 15.d4 (15.d4 ed4 16.Bd4+-) 1–0. mrkt – korr, internet, 2011.

5.ed5 Qd5 6.Nc3 Qd4 7.Qh5 Kd8=.

5.Qh5 g6+= 6.Qh4 Be6 7.ed5 Qd5 8.Nf3 Nd7 (8...g5 9.Qh5 Bf7 10.Qg4=) 9.Nc3 Qd6 10.Bd3 (10.Ne4 Qb6=) 10...g5 11.Qe4 0-0-0 12.a4 (12.Qe2 Ne7+=) 12...g4–/+ 13.Nh4 Ne7 Black launches an attack 14.a5 f5 15.Qa4 (15.Qe2 Rhe8–/+) 15...Rhf8 (15...e4 16.Be2–/+) 16.0-0 (16.b6 cb6 17.Nb5+=) 16...e4–/+ 17.b6 a6 (17...ed3 18.Nb5 Qd5 19.Nc7–/+) 18.bc7 (18.Bc4 Bc4 19.Qc4 Ne5+=) 18...Qc7 19.Ne4 (19.Be2!?–/+) 19...fe4–+ 20.Qe4 Bd5 21.Qg4 Rf4 22.Qh3 (22.Qg3 Rg8 23.Qh3 Rh4–+) 22...Rdf8 23.Ba3 Qa5 24.Bc5 Qc5 25.Qg3 Qd4 26.c3 Qf6 27.c4 Bc6 (27...Rh4?! 28.cd5 Kd8 29.d6–+) 28.Nf5 Rf5 29.Bf5 Nf5 30.Qh3 (30.Qd3 Rg8 31.f3 Nh4–+) 30...Nh4 (30...Rg8 31.g3–+) 31.f3 Rg8 (31...Rg8 32.Kh1 Rg2–+) 0–1. Perez – Pratt, corr Spain, 1991.

4.e4 Ne7

5.Nc3 d4 6.Na4 a6 7.Qh5 g6=+.

5.d4 de4 6.Nd2 ed4 7.Ne4 Nf5 8.Bc4 Bb4 9.c3 dc3 10.Bc3 Bc3 11.Nc3 Qd1 12.Rd1 c6 (12...Nd6 13.Bd3=+) 13.Nf3 Nd7 14.0-0 Nb6 15.Rfe1 Ne7 16.Bb3 (16.Rd2 Bg4 17.Rde2 Nbc8=) 16...Bg4 17.Rd3 Bf3 18.Rde3 0-0-0 (better 18...Nbc8!? 19.Rf3 a6=) 19.Re7+= Bd5 (19...Rd3 20.Rc1 Bd5 21.Nd5 Nd5 22.Bd5 Rd5 23.bc6+/-) 20.Nd5+/- (worse 20.Rg7 Rd7 21.Ree7 Re7 22.Re7 Bb3 23.ab3 Nd5 24.Nd5 cd5+=) 20...cd5 (20...Nd5!? 21.Bd5 Rd5 22.bc6 bc6 23.Ra7 Rhd8 24.Rg7 R8d7 25.Rd7 Kd7+/-) 21.Rc1+- Nc4 22.Bc4 dc4 23.Rc4 Kb8 24.g3 Rc8 25.Rc8 Rc8 26.Rg7 Rc5 (26...Rc2 27.a4 Rc4 28.Rf7+-) 27.Rh7 Rb5 28.h4 Rb2 (28...Ra5 29.h5+-) 29.h5 Ra2?! (29...Rb5 30.Kg2+-) 30.h6 Ra5 31.Re7 Rh5 32.h7 1-0. onur604 (2320) - RobinBobinTursunbek (2400), Casual Rapid game, lichess.org, 2021.

5.ed5 Nd5 6.Nc3 Be6 7.Nd5 Bd5 8.c4 Be6 9.Qf3 (9.Qc2 Nd7=) 9...c6=+ 10.Bd3 Qd7 (10...Bb4 11.Bc3 Bc3 12.dc3=+) 11.Ne2 (11.Qe2 a6=+) 11...Bd6 (11...Bc5 12.0-0=) 12.Ng3 0-0 13.Bf5 Bf5 14.Qf5 (14.Nf5 e4 15.Qh3 Bf4=) 14...cb5=+ 15.cb5 Qb5 (15...Bc5 16.Qd7 Nd7 17.Ke2=+) 16.Qe6= Rf7 17.Qd6 Qb2 18.Qd8 Rf8 19.Qd5 Kh8 20.0-0 Qb6 (20...Qd4 21.Qb7 Nd7=) 21.Rfc1 (better 21.Rab1!? Qc6 22.Qc6 bc6 23.Rfc1=) 21...Nc6–/+ 22.Rab1 Qc7 23.Qb5 Rab8 24.Qc5 (24.Rc5 Rfd8–/+) 24...Rfc8 (24...Qd7 25.Rb2–/+) 25.Ne4 b6 (25...Qd7!? 26.Nd6 b6=+) 26.Qd6= a6 27.Rc3 Qb7 28.Qd5 (better 28.Nf6!? Rd8 29.Rh3=) 28...Ne7=+ 29.Rc8 (29.Qb7 Rb7 30.Kf1 b5–/+) 29...Qc8–/+ 30.Qf7 Qd8 (30...Qc6 31.Nc3 Qd6 32.h3–/+) 31.f3 (31.h3 Nf5–/+) 31...b5 (31...Rc8 32.h3–/+) 32.h3 Rc8 33.Nf6?? (better 33.a4 Qd3 34.Re1–/+) 33…Qb6–+ (33...Qb6 34.d4 Qf6 (34...gf6?! 35.Qe7 ed4 36.Rd1–/+) 35.Qf6 gf6 36.de5 fe5–+; 33...gf6?! 34.Qf6 Kg8 35.Qe6 Kg7 36.Qe5 Kf7 37.Qf4 Kg8 38.a4–/+) 0–1. Deus Filho,Joaquim De (1965) – De Albuquerque,ITC, IRT II Memorial Antonio Padua – ALEX, 2017.

4.Nf3 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e4 Be6 9.bc6 (9.ed5 cd5 10.d4 e4=) 9...bc6 (9...de4 10.Ne5 fe5 11.Qh5 Ke7 12.cb7-/+) 10.ed5= cd5 11.Bb5 Nd7 12.c4 (12.Qe2 Ne7=) 12...Qa5 (12...dc4!? 13.0-0 Qa5-/+) 13.Bc3= Bb4 (13...Qa8 14.d4 dc4 15.Nbd2=) 14.Qb3 Bc3 15.cd5 Bf7 16.Bd7 Kd7 Exerts pressure on the isolated pawn 17.Qb7 (worse 17.Qc3 Qc3 18.dc3 Ne7=+; 17.Nc3?! Qa1 18.Nd1 Qa8+=) 17...Qc7 18.Qb5 Kd8 19.Nc3 Ne7 20.0-0 Qd7 21.Qb8 Qc8 22.Qb6 (22.Qa7 Qc7 23.Qa8 Qc8+/-) 22...Qc7+= 23.Qb5 (23.Qa6 Nf5 (23...Bd5?? 24.Nd5 Qc6 25.Qa5 Ke8 26.Ne7 Ke7 27.d4+-) 24.Rb1 Nd6+-) 23...Qd7+/- 24.Qb8 (24.Qa5 Qc7 25.Qa8 Qc8+/-) 24...Qc8 25.Qb3 Re8 (25...Bh5 26.Nh4+/-) 26.Ra1+- Nf5?? (better 26...Qd7+-) 27.Qb6 Ke7 28.Qb4 Kd8 (28...Nd6 29.Nb5 Qb8 30.Ra7 Kf8 31.Qd6 Kg8 32.Qd7+-) 29.Ra7 (29.Ra7 Re7 30.Qa5 Ke8 31.Ra8+-) 1-0. onur604 (2320) - Chean63 (2270), Casual Rapid game, lichess.org, 2021.

5.e3 ab5 6.Bb5 c6 7.Be2 Qb6 8.Qc1 Bg4 9.Na3 (9.h3 Bf5=) 9...Bd6–/+ 10.c4 e4 11.Nd4 Be2 12.Ne2 Nd7 13.0-0 Qa6 14.Nc2 Qc4 15.Ncd4 Qc1 16.Rfc1 Ne7 17.Ne6 Kf7 18.N6f4 Ra6 19.Rc2 Rha8 20.Bc3 b5 21.d4 (21.Nc1 b4 22.Bb2 Bf4 23.ef4 Ng6–+) 21...b4 22.Be1 (22.f3 Bf4 23.ef4 b3–+) 22...b3! 23.Rb2 (23.ab3 Ra1) 23...Ra2 (worse is 23...ba2 24.Nc1 Bf4 25.ef4–+) 24.Rab1 (24.Rba2 Ra2 25.Bc3–+) 24...Rb2 25.Rb2 Ra1 26.Nc3 (26.f3 ef3 27.gf3 Bf4 28.Nf4 Re1 29.Kf2–+) 0–1. Vermaas,Fred – Johansson,Mats, IECG, 2006.

5.e3 Bf5 6.d4 e4 7.Nfd2 Ne7 8.ba6 Na6 9.c4 dc4 10.Bc4 Nc8 11.Nc3 Bb4 12.Qc2 Nd6 13.Bd5 Qe7 14.a3 Bc3 =.

4.Nf3 c6

5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 Bg4 9.h3 Bh5 10.g4 Bf7 11.Be2 Bd6 12.d4 e4 13.Nh4 Ne7 14.0-0 0-0 15.Nd2 Bc7 16.Re1 (16.f4 Qd7+=) 16...Qd6–/+ 17.Nf1 Be6 18.Qb1 h5 (18...f5 19.b6 Bd8 20.c4–+) 19.Ng2 (19.gh5!? Nd7 20.Kg2+=) 19...hg4–/+ 20.b6 (20.hg4 Qd7–/+) 20...Bd8 (20...gh3!? 21.bc7 hg2 22.Kg2 Qc7 23.Ng3–+) 21.hg4–/+ f5 (21...Qd7 22.Nh2–/+) 22.gf5 Bf5 23.c4 Qg6 24.Bh5?? (24.Ng3 Nd7+=) 24...Qg5 (better is 24...Qh5 25.c5 Bh3–+) 25.cd5?? (better is 25.Ng3–/+) 25…cd5 ½–½. Ashimov,Fakil – Minigalimov,Fidaris, Sterlitamak op, 2008.

5.e3 (--> 4.e3 c6 5.Nf3).

4.Nf3 Be6

5.a4 Nd7 6.e3 Bd6 7.h3 Ne7 8.d3 a6 9.ba6 Ra6 10.d4 Ra8 11.de5 Ne5 12.Ne5 Be5 13.Be5 fe5 14.Qh5 Ng6 15.Be2 0-0 16.0-0 Rf5 17.Qg4 Qe7 18.Qg3 Rg5 19.Qh2 Nh4 (19...Qb4 20.Ra3–/+) 20.g4 e4 21.Nd2 h5 22.f4 (22.Rfb1 hg4 23.Kh1 b6 24.hg4 Bg4 25.Bg4 Rg4–+) 22...ef3 23.Nf3 Nf3 24.Bf3 hg4 25.Bg4? (better is 25.h4 Rh5 26.Bg2–+) 25...Bg4 26.hg4 Rg4 27.Kf2 Qe4 28.Rac1 (28.Qh3 Qc2 29.Ke1 Qc3 30.Ke2 Qb2 31.Kd3 Rd4 32.ed4 Qb3 33.Kd2 Qh3 34.a5–+) 28...Rf8 29.Ke2 Rg2 30.Qg2 Qg2 31.Kd3 Rf1 (31...Rf1 32.Rf1 Qf1 33.Kd2 g5–+) 0–1. grahamtrue (2160) – pcmvr, net–chess.com, 2016.

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

5.g3 c5 6.Bg2+=.

5.g3 Bd6 6.Bg2 Ne7 7.0-0 0-0 (7...a6 8.ba6 Na6 9.d4+=) 8.d3 (8.d4 e4 9.Nfd2 f5+=) 8...c6 (8...Qd7 9.a4+=) 9.a4+= Qd7 (9...a6 10.Na3+=) 10.Ba3 (10.Nc3 Bb4+=) 10...Ba3 (10...Nc8 11.bc6 Nc6 12.a5–/+) 11.Na3 d4 12.Nd2 (12.e3 c5+=) 12...Nd5–/+ 13.Ne4 f5 (13...Qe7 14.Qd2+=) 14.Nc5 Qe7 15.Ne6 Qe6 16.Bd5 cd5 (16...Qd5 17.c3+=) 17.f4 (17.e3 de3 18.fe3 Nd7+=) 17...Nd7 18.Qd2 Rae8 19.Rae1 Qd6 20.Ra1 (20.Nb1 e4–/+) 20...Nf6 21.fe5 Qe5 22.Rae1 (22.Qf4 Qf4 23.Rf4 Re2 24.Rf5 Ng4 25.Rf8 Kf8 26.Rf1 Ke7–/+) 22...Qd6 23.Qc1 (23.Nb1 Ng4–/+) 23...Ng4 24.Kh1 (better is 24.Rf3!?–/+) 24...Re3–+ 25.Rg1 (25.Rf3 f4 26.Kg2 fg3 27.Rf8 Qf8–+) 25...Nf2 (25...f4 26.Rg2 fg3 27.Rf1 Qa3 28.Rg3 (28.Qa3?? Rf1 29.Rg1 g2 30.Kg2 Rf2 31.Kh1 Rh2) 28...Nf2 29.Kg1 Qc1 30.Rc1 Re2 31.a5–+) 26.Kg2 f4 (26...f4 27.Qa1 Qh6–+) 0–1. Yeung,Chun Keung (1640) – Zylla,Johannes (2265), corr WSTT/3/06/Semifinal, 2008.

4.Nf3 Be7

5.d4 e4 6.Nfd2 f5 7.e3 Nf6 8.c4 0-0 9.Ba3 Ba3 10.Na3 Be6 11.Be2 dc4 12.Bc4 Nd5 13.0-0 a6 14.ba6 Na6 =.

5.e3 Nh6 6.Nc3 Bf5 7.d4 e4 8.Nd2 Be6 9.Ne2 0-0 10.Nf4 Bf7 11.c4 dc4 12.Ne4 Bd6 13.Nd6 cd6 14.d5 Qa5 +=.

4.a4 a5

5.Nc3 A) 5...Be6 A1) 6.Nf3 Nh6 (6...Nd7 7.e4 d4 8.Nd5 c6 9.Nf4 ef4 10.Nd4 Bf7) 7.g3 d4 8.Ne4 Bd5 9.d3 f5 10.Ned2 Nd7; A2) 6.Nh3 Bc5 (6...Nh6 7.e3 Nd7 8.Bd3 Bb4 9.Qh5 Bf7 10.Qh4 Nc5 ) 7.e3 Ne7 8.d4 Bd6 9.de5 Be5 10.Bd3 0-0; A3) 6.e3 Nd7 (6...Ne7 7.Nf3 Kf7 8.Nh4 Nd7 9.Be2 Ng6 10.Bh5 Nb6 ) 7.Qh5 g6 8.Qe2 Bb4 9.Nf3 Ne7 10.h4 Bg4; B) 5...Ne7 B1) 6.e3 Be6 (6...Kf7 7.Qh5 g6 8.Qf3 Nd7 9.Nh3 Nc5 10.e4 Kg7) 7.Nh3 Nd7 8.Be2 Nf5 9.0-0 Bb4 10.Bg4 Nb6; B2) 6.g3 Kf7 (6...Nd7 7.Nf3 Nb6 8.e3 Kf7 9.Nh4 Be6 10.Be2 g5) 7.Bg2 Be6 8.Nf3 Nd7 9.0-0 Nf5 10.e4 de4; B3) 6.Nf3 Be6 (6...Nd7 7.e3 Kf7 8.h3 Nb6 9.Be2 Nf5 10.0-0 Bb4) 7.g3 Nd7 8.Bg2 Nf5 9.0-0 e4 10.Nh4 Nh4; C) 5...Bb4 C1) 6.Nf3 Ne7 (6...Nh6 7.e4 Bc3 8.dc3 de4 9.Qd8 Kd8 10.0-0-0 Ke8) 7.h4 0-0 8.h5 e4 9.Nd4 c5 10.bc6 Nbc6; C2) 6.Na2 Bd6 (6...Ne7 7.Nb4 ab4 8.c3 bc3 9.Bc3 Be6 10.Nf3 0-0 ) 7.Nf3 Ne7 8.Nc3 Nd7 9.e3 0-0 10.Be2 Nb6; C3) 6.e4 Ne7 (6...Bc3 7.Bc3 Ne7 8.Qh5 g6 9.Qf3 Qd6 10.ed5 Nd7) 7.Qh5 Kf8 8.Bd3 Nd7 9.Nd5 Nc5 10.Nb4 ab4; D) 5...d4 D1) 6.Na2 Bc5 (6...Kf7 7.e3 Be6 8.Bd3 Qd5 9.Qf3 Ne7 10.Be4 Qc4 ) 7.e3 Be6 8.Nf3 de3 9.fe3 Ne7 10.d4 ed4; D2) 6.Nb1 Bc5 (6...Nh6 7.e3 de3 8.fe3 Nd7 9.Nc3 Nb6 10.Qf3 Rb8 ) 7.e3 Nh6 8.Bc4 de3 9.fe3 Bg4 10.Ne2 Nd7; D3) 6.Ne4 f5 (6...Qd5 7.f3 Nd7 8.e3 Nc5 9.ed4 ed4 10.Qe2 Ne7) 7.Ng3 Nf6 8.e3 Qd5 9.ed4 ed4 10.Qf3 Qe6.

5.e3 Bb4 A) 6.Be2 Ne7 (6...Bf5 7.Nf3 Ne7 8.Nh4 Be6 9.Bh5 g6 10.Bg4 Qd7) 7.Nc3 0-0 8.Nf3 Be6 9.0-0 Nd7 10.Na2 Bd6; B) 6.Nc3 Ne7 (6...Kf7 7.Nf3 Ne7 8.Be2 Be6 9.0-0 Nd7 10.Nh4 Rf8) 7.Qh5 g6 8.Qd1 Be6 9.h4 Nd7 10.h5 Kf7; C) 6.c3 Bd6 (6...Be7 7.c4 Bb4 8.Nc3 Ne7 9.cd5 Nd5 10.Bc4 Be6) 7.c4 Ne7 8.Nc3 Be6 9.Qb3 c6 10.cd5 cd5.

5.e3 Bc5 A) 6.Qh5 g6 (6...Kf8 7.Nc3 g6 8.Qf3 Be6 9.Nh3 Kg7 10.d4 Bb4) 7.Qd1 Ne7 8.Nc3 0-0 9.h4 Nd7 10.h5 e4; B) 6.Nc3 Ne7 (6...Nh6 7.Qh5 Nf7 8.Be2 0-0 9.Nf3 Be6 10.d4 Be7) 7.Nf3 0-0 8.d4 Bb4 9.de5 fe5 10.Ne5 Qd6; C) 6.d4 ed4 (6...Bb4 7.c3 Bd6 8.c4 ed4 9.Bd4 Bb4 10.Nc3 Ne7) 7.Bd4 Bd4 8.Qd4 Ne7 9.Nc3 0-0 10.Bd3 c6.

5.e3 Bd6 6.c4 dc4 (6...Be6 7.cd5 Bd5 8.Nc3=) 7.Bc4 Bf5 8.Nf3 Ne7 9.d4 e4 10.Nfd2 Nd7 11.Nc3 Nb6 12.Be2 (12.Bb3 Bb4+-) 12...Bb4+= 13.Qb3 Bc3 14.Bc3 Ned5 15.Bb2 0-0 16.Nc4 Kh8 (16...Be6 17.Ba3 Re8 18.0-0+=) 17.Nb6 Nb6 18.0-0 Re8 19.Rac1 Be6 20.Qc2 Nd5 (20...Qd5 21.Ba3+=) 21.Ba3 (better 21.Qe4!? Qd6 22.Bf3+-) 21...f5+= 22.Bc4 Rc8 23.Qd2 b6 24.Bb3 (24.Rc2 Qg5+=) 24...Qf6 Black prepares the advance f4 (better 24...f4!?=) 25.Rc6+- Qf7 26.Rfc1 f4 27.ef4 (27.Qc2 fe3 28.fe3 Qd7+-) 27...Nf4+= 28.Be6 Re6 29.Re6 Ne6 30.d5 Nf4 31.d6 Nd3 32.Rf1 (better 32.Rc3!?+=) 32...cd6 (32...Qb3 33.Qg5 cd6 34.Qf5=+) 33.Bd6 (33.Qe3 d5 34.Qb6 Qc7 35.Qc7 Rc7=) 33...Rd8 (33...Qf6 34.Bg3–/+) 34.Bg3=+ h6 (34...Qf6 35.Qe2=+) 35.Qe3 Qc4? (better 35...Nc5!?=) 36.Qb6+- Rf8 37.Qa5 e3? (better 37...Nc1 38.Re1 e3 39.Re3 Ne2 40.Re2 Qe2+-) 38.Bd6?? (38.fe3 Rf1 39.Kf1 Nb4 40.Kg1 Qc1 41.Kf2 Qc2 42.Kf3 Qd1 43.Kf4 Qd6 44.Kg4 Qd1 45.Kh3 Qd7 46.Kh4 Qe7 47.Kg4 Qd7 48.Kh4 Qe7 49.Kg4 Qd7 50.Kh4=) 38...ef2 39.Kh1 Ne1 40.Rf2 (40.Qe1 fe1Q 41.Rg1 Qg1 42.Kg1 Rf1) 40...Qf1!! 41.Rf1 Rf1 A classical mating theme 0–1. BeepBeepImAJeep (2635) – TheRigos (2665), lichess.org, 2019.

5.e3 Nd7 6.Qh5 (6.d4 Ne7=) 6...g6 7.Qd1 Nb6 (7...Bd6 8.Be2=) 8.Nf3 (8.Be2 Nh6=) 8...Be6 (8...Bd6 9.Be2=) 9.Be2 Nh6 10.d3 Bg7 (10...Bd6 11.0-0=) 11.Nbd2 Nf7 (11...Nf5 12.c4=) 12.c4 (12.0-0 0-0=) 12...dc4 (12...c5 13.Qc2=) 13.dc4 e4 (better is 13...c5!?=) 14.Nd4 Bf5 15.0-0 0-0 (15...Qe7 16.Qc2+/–) 16.Nf5 (16.Qc2 Re8+-) 16...gf5 17.Nb3 (17.Qc2+-) 17...Qe8 (17...Ne5 18.Qc2+/–) 18.Nd4 (18.c5 Nd7+-) 18...Rd8 (18...Qc8 19.f3+-) 19.Qc2 (19.Ba3 Qe5 20.c5 Nd5+-) 19...Nh6 (19...f4 20.ef4 Bh6 21.Nf5+-) 20.c5 (better is 20.Ba3+-) 20...Nd7? (better is 20...Nd5+-) 21.Ne6!! Qg6 (21...Qe6 22.Bc4 Pinning (22.Bc4 Decoy)) 22.Nd8 Rd8 23.Qb3 (better is 23.Rad1!? c6+-) 23...Kh8 (23...Nf7 24.Rad1 Bf8 25.Qc4+-) 24.Rfd1 Ng4 (24...Nf7 25.Qd5 Bf8 26.Qb7 Nc5 27.Qc7 Rd1 28.Rd1 f4 29.ef4 Kg7+-) 25.Bg4 (better is 25.c6 Qe8 26.Qd5 bc6 27.bc6 Nge5 28.Be5 Qe5+-) 25...Qg4 (25...fg4 26.Qe6 f5 27.Qe7+-) 26.Qe6 f4 (26...Qh5 27.Rd7 Re8 28.Re7 Re7 29.Qe7+-) 27.Rd7 (better is 27.Qg4 fe3 28.Rd7 ef2 29.Kf2 Rd7 30.Qd7 e3 31.Ke3 h6 32.Qe8 Kh7 33.Qe4 Kh8 34.Rd1 b6 35.Rd8 Bf8 36.Bf6 Kg8 37.Qg6) 27...Qe6 28.Rd8 Bf8 29.Rf8 Kg7 30.Rf6 Qb3 31.Bd4 Kg8 32.Rf4 c6 1–0. DEFFM – GuestSSKM, freechess.org, 2016.

5.e3 Kf7 A) 6.Nc3 Bb4 (6...Ne7 7.Nf3 Be6 8.Nh4 Nd7 9.Be2 Ng6 10.Bh5 Nb6) 7.f4 Be6 8.Nf3 Nd7 9.fe5 Ne5 10.Ne5 fe5; B) 6.Nf3 Ne7 (6...Be6 7.Be2 Ne7 8.0-0 Nd7 9.Nc3 Nf5 10.d4 e4) 7.Nc3 Be6 8.h4 Nd7 9.Be2 Nf5 10.g4 Nd6; C) 6.Nh3 Ne7 (6...Bb4 7.Qf3 Nh6 8.Qh5 Kg8 9.Nc3 Bg4 10.Qh4 Be6) 7.Qh5 g6 8.Qf3 Nf5 9.Nc3 Be6 10.g4 e4.

5.e4 A) 5...Ne7 A1) 6.Bd3 Nd7 (6...de4 7.Be4 Nd7 8.Qh5 g6 9.Qh4 Bg7 10.Nf3 Nc5 ) 7.Qh5 g6 8.Qf3 Bg7 9.Nc3 f5 10.ed5 e4; A2) 6.Nh3 Be6 (6...Nd7 7.Nc3 d4 8.Nd5 Nd5 9.ed5 Nb6 10.Bd3 Qd5 ) 7.f4 Nd7 8.fe5 Ne5 9.Nf4 Bf7 10.Nc3 de4; A3) 6.Qh5 g6 7.Qf3 Bg7 8.ed5 Nd7 9.Nc3 Nb6 10.Bd3 f5; B) 5...Bb4 B1) 6.Nc3 Ne7 (6...Bc3 7.Bc3 Ne7 8.Bd3 Nd7 9.Qh5 Kf8 10.Ne2 Nc5) 7.Qh5 g6 8.Qf3 Bc3 9.Bc3 0-0 10.ed5 Qd5; B2) 6.Bd3 Ne7 (6...Be6 7.Qh5 Bf7 8.Qg4 Kf8 9.Nc3 Ne7 10.Nf3 Nd7) 7.Nc3 Be6 8.Nf3 d4 9.Na2 Nd7 10.Nb4 ab4; B3) 6.ed5 Ne7 (6...Qd5 7.Nc3 Bc3 8.dc3 Qd1 9.Rd1 Bf5 10.Rd2 Nd7) 7.c4 0-0 8.Nf3 Nd7 9.Be2 Nf5 10.0-0 e4; C) 5...Bc5 C1) 6.ed5 Ne7 (6...Nh6 7.Nc3 0-0 8.Ne4 Bd4 9.c3 Qd5 10.cd4 Qe4 ) 7.c4 c6 8.dc6 bc6 9.Ne2 0-0 10.Nbc3 Bg4; C2) 6.d4 ed4 (6...Bd4 7.Bd4 ed4 8.Qd4 de4 9.Qe4 Qe7 10.Nc3 Nd7 ) 7.Bd4 Bd4 8.Qd4 de4 9.Qe4 Qe7 10.Nc3 Nd7; C3) 6.Nc3 Ne7 (6...d4 7.Nd5 f5 8.Qh5 g6 9.Qf3 c6 10.bc6 bc6) 7.Qh5 g6 8.Qh4 d4 9.Nd1 0-0 10.Bc4 Kg7; D) 5...de4 D1) 6.Ne2 Be6 (6...Bc5 7.Ng3 f5 8.Bc4 Bd4 9.c3 Bc5 10.Ba3 Bd6) 7.Na3 Nd7 8.Nc3 f5 9.d3 Ngf6 10.de4 Ne4; D2) 6.Nh3 Nh6 (6...Be6 7.Nc3 Qd4 8.Be2 Nd7 9.0-0 Nh6 10.Qc1 Nc5) 7.Nc3 Nd7 8.Ne4 Nc5 9.Qh5 g6 10.Qf3 Nf5; D3) 6.Nc3 Nd7 (6...Bf5 7.Nge2 Nh6 8.Ng3 Be6 9.Nce4 f5 10.Nc3 Bc5) 7.Bc4 Nb6 8.Bb3 Bf5 9.Nge2 Qd7 10.0-0 0-0-0.

5.Nf3 A) 5...Bb4 A1) 6.Nc3 Ne7 (6...Nh6 7.Na2 Be7 8.Nc3 Be6 9.e3 0-0 10.Be2 Nd7 ) 7.h4 0-0 8.h5 e4 9.Nd4 c5 10.bc6 Nbc6; A2) 6.g3 Ne7 (6...Be6 7.c3 Bd6 8.c4 Ne7 9.cd5 Nd5 10.Nc3 Nd7) 7.Nc3 0-0 8.Bg2 Be6 9.0-0 Nd7 10.e3 Nf5; A3) 6.c3 Bd6 (6...Bf8 7.e3 Ne7 8.c4 Be6 9.d4 e4 10.Nfd2 Nd7) 7.c4 Ne7 8.cd5 Nd5 9.Nc3 Nc3 10.Bc3 Be6; B) 5...Ne7 B1) 6.e3 Be6 (6...Kf7 7.Be2 Nf5 8.Nc3 e4 9.Nd4 Nd4 10.ed4 Be6) 7.Nc3 Kf7 8.Nh4 Nd7 9.Be2 Ng6 10.Bh5 Nb6; B2) 6.g3 e4 7.Nd4 c5 8.Nb3 Nf5 9.Bg2 Nd7 10.d3 ed3; B3) 6.Nc3 Be6 (6...Bf5 7.e3 Nd7 8.Be2 Kf7 9.0-0 Be6 10.Nh4 Ng6 ) 7.h4 Nd7 8.e3 Kf7 9.h5 Nf5 10.g4 Nd6; C) 5...Kf7 C1) 6.e3 Bb4 (6...Be6 7.Nc3 Ne7 8.Nh4 Nd7 9.Be2 Ng6 10.Bh5 Nb6 ) 7.c3 Bd6 8.c4 Ne7 9.cd5 Nd5 10.Nc3 Be6; C2) 6.g3 Nh6 (6...Ne7 7.Bg2 Nf5 8.Nc3 Be6 9.e4 de4 10.Ne4 Nd7) 7.Bg2 Nf5 8.0-0 Be6 9.Nc3 Nd7 10.e4 de4; C3) 6.Nc3 Be6 (6...d4 7.Ne4 Qd5 8.d3 Nd7 9.c4 dc3 10.Nc3 Bb4) 7.g3 Nd7 8.Bg2 d4 9.Ne4 Nc5 10.Nc5 Bc5; D) 5...Nh6 D1) 6.g3 Bb4 (6...Kf7 7.Bg2 Nf5 8.Nc3 Be6 9.e4 de4 10.Ne4 Nd7) 7.Nc3 0-0 8.e3 Be6 9.Bg2 Nf5 10.0-0 Nd7; D2) 6.e3 Be6 (6...Kf7 7.Nc3 Be6 8.Be2 Nd7 9.0-0 Bb4 10.Nh4 g5) 7.c4 Bb4 8.cd5 Bd5 9.Nc3 Bf7 10.d4 0-0; D3) 6.Nc3 Bb4 (6...Be6 7.e3 Nd7 8.Be2 Bb4 9.0-0 0-0 10.Na2 Be7 ) 7.e4 Bc3 8.dc3 de4 9.Qd8 Kd8 10.0-0-0 Ke8; E) 5...Be6= E1) 6.g3 Nd7 (6...Bd6 7.Nc3 Ne7 8.Bg2 Nd7 9.0-0 0-0 10.e3 Nf5) 7.Bg2 Bd6 8.Nc3 Ne7 9.0-0 0-0 10.e3 Nf5; E2) 6.h4 Nd7 (6...Nh6 7.Nc3 Kf7 8.e3 Nd7 9.Be2 Bb4 10.0-0 Nf5) 7.Nc3 Nh6 8.e4 de4 9.Ne4 Nc5 10.Nc5 Bc5; E3) 6.Nc3 Nd7 (6...Nh6 7.e4 d4 8.Ne2 Nd7 9.Ng3 Nc5 10.Be2 Be7) 7.e3 Ne7 8.Be2 Nf5 9.0-0 Bb4 10.d3 0-0.

5.Nh3 A) 5...Be6 A1) 6.e3 Nd7 (6...Nh6 7.c4 Bb4 8.cd5 Qd5 9.Nc3 Bc3 10.dc3 Qd1) 7.Be2 Nh6 8.0-0 Bb4 9.Nc3 0-0 10.d4 Nb6; A2) 6.e4 de4 (6...Ne7 7.f4 Qd6 8.Ba3 Qb6 9.fe5 Nd7 10.Nc3 d4) 7.Nc3 Qd4 8.Qe2 Bb4 9.Nd1 Qd8 10.c3 Bc5; A3) 6.Nc3 Nd7 (6...Bc5 7.e3 Ne7 8.d4 Bd6 9.de5 Be5 10.Bd3 0-0) 7.e3 Bb4 8.Qh5 g6 9.Qd1 Ne7 10.Be2 0-0; B) 5...Nh6 B1) 6.Nc3 Be6 (6...Bb4 7.e4 Bc3 8.Bc3 0-0 9.d4 Bh3 10.gh3 f5) 7.e3 Nd7 8.Qh5 g6 9.Qf3 Nb6 10.Bd3 Bb4; B2) 6.d4 Bb4 (6...Nd7 7.e4 de4 8.Nd2 ed4 9.Bd4 Nf5 10.Bc3 Nc5) 7.c3 Be7 8.de5 fe5 9.e4 de4 10.Qh5 Kf8; B3) 6.e3 Be6 (6...Nd7 7.Nc3 Nc5 8.d4 Bg4 9.Be2 ed4 10.ed4 Bh3) 7.Nc3 Nd7 8.Qh5 g6 9.Qf3 g5 10.Qh5 Bf7; C) 5...Ne7 C1) 6.e3 Be6 (6...Nd7 7.Be2 Nc5 8.0-0 Bh3 9.gh3 Nf5 10.d4 ed4) 7.Nc3 Nd7 8.Bd3 Nc5 9.0-0 Nd3 10.cd3 Nf5; C2) 6.d4 Ng6 (6...Nd7 7.Nc3 Kf7 8.e4 c6 9.f4 ed4 10.Qd4 c5) 7.de5 fe5 8.e4 d4 9.c3 Bh3 10.gh3 Bc5; C3) 6.Nc3 Be6 (6...Nd7 7.e3 Kf7 8.Be2 Nb6 9.0-0 Bh3 10.gh3 Ng6 ) 7.e3 Nd7 8.Be2 Nf5 9.0-0 Bb4 10.Bh5 g6; D) 5...Bb4 D1) 6.Nc3 Ne7 (6...Be6 7.e3 Nd7 8.f4 Nh6 9.fe5 fe5 10.Qh5 Bf7) 7.e4 Be6 8.ed5 Nd5 9.Bd3 Nd7 10.Qh5 Bf7; D2) 6.e4 de4 (6...Ne7 7.Qh5 g6 8.Qf3 0-0 9.ed5 e4 10.Qb3 Qd6) 7.Bc4 Nd7 8.Nc3 Nb6 9.Qh5 g6 10.Qe2 Qd4; D3) 6.c3 Bd6 (6...Be7 7.c4 dc4 8.e3 Nd7 9.Bc4 Nb6 10.Bb3 Qd3) 7.c4 Ne7 8.cd5 Nd5 9.e4 Nb6 10.Be2 Be6.

5.e3 Ne7

6.Nc3 Kf7 (6...Nd7 7.Nf3 Kf7 8.Be2 Nb6 9.0-0 Be6 10.Re1 Nc4) 7.Nf3 Be6 8.Nh4 Nd7 9.Be2 Ng6 10.Bh5 Nb6.

6.c4 d4 (6...Be6 7.c5=) 7.Nf3 (7.ed4 ed4 8.Bd3 Nd7+=) 7...d3 (7...de3 8.fe3 Nd7 9.d4=) 8.e4 f5? (better 8...Ng6=) 9.Ne5+- fe4 10.Nc3 (10.Qh5 g6 11.Ng6 Ng6 12.Bh8 Qe7+-) 10...Bf5 (10...Nd7 11.Nd7 Bd7 12.Qh5 Ng6 13.Qd5+-) 11.g4 (11.Qh5 g6 12.Qh4 Bg7 13.Ne4 0-0+-) 11...Nd7 (11...Qd6!? 12.gf5 Qe5 13.Qh5 g6+=) 12.gf5 Ne5 13.Ne4 Nf5 14.Be5 Qe7 15.Qh5?? (better 15.f4 Qh4 16.Nf2+-) 15...g6= 16.Nf6?? (better 16.Qf3 Qe5 17.Rb1=+) 16...Kd8–+ 17.Qg5 (17.f4 gh5 18.Kd1–+) 17...Qe5 18.Ne4 Be7 (18...Kc8 19.Qg4 h5 20.Qf3 Qa1 21.Qd1–+) 19.Qg4 Qa1 20.Qd1 Qd1 (better 20...Qd4!? 21.Qf3 Nd6 22.Nc3 Qe5 23.Kd1–+) 21.Kd1 Re8 22.Bd3 Bd6 (22...c6 23.Nc3–+) 23.h4 Kd7 (23...Be5 24.Ng5 Re7 25.Bf5 gf5 26.Re1–+) 24.h5? (better 24.Nf6 Ke6 25.Ne8 Re8 26.Re1 Kf7 27.Re8 Ke8 28.h5–+) 24...g5 (better 24...Be7–+) 25.c5? (25.Nf6 Ke6 26.Ne8 Re8 27.Re1 Be5 28.Bf5 Kf5–/+) 25...Bf4?? (25...Be7 26.Ng5 Nd4 27.Nh7–+) 26.c6? (better 26.Nf6 Ke6 27.Ne8=) 26...bc6 (better 26...Kd8 27.Nf6 Re6 28.cb7 Rb8–+) 27.Nc5?? (27.Nf6 Ke6 28.Ne8 Re8 29.Re1 Be5 30.Bf5 Kf5 31.d4 cb5 32.ab5–+) 27...Kc8 (better 27...Kd6 28.Nb7 Ke5 29.bc6 Nd4 30.Re1 Kf6 31.Re8 Re8–+) 28.Bf5= Kb8 29.bc6 Ka7 (29...Re7 30.d4=) 30.Nd7 (30.Bh7 Rad8 31.Nd3=) 30...Rad8 (30...Re7 31.Re1 Re1 32.Ke1 Re8 33.Kd1=+) 31.Bh7 (better 31.Rh3 h6 32.Rb3+-) 31...Re6=+ 32.Nc5?? (32.Bf5 Rc6 33.h6 Rd6–/+) 32...Rc6 (32...Rd2 33.Kc1 Ree2 34.Nb3 Rd3 35.Nd2 Rdd2 36.Bc2 Rc2 37.Kb1 Ra2 38.h6 Reb2) 33.Nb3–/+ Rc3 34.Bc2 (better 34.Bg8 Bd2! 35.Nd2–/+) 34...Rb3?? (better 34...c5 35.Kc1 Kb6–+) 35.Bb3+= Rd2 36.Ke1 Rb2 37.Bd1 Ra2 (37...Be5!?+-) 38.h6 Be5 39.h7 Bh8 (39...Bc3 40.Kf1+-) 40.Rg1 (better 40.Rh5 Bc3 41.Kf1+-) 40...Ra4?? (40...Bc3 41.Kf1 Rd2 42.Be2+-) 41.Rg5 (better 41.Ba4 g4 42.Rg4+-) 41...Re4 42.Kf1 (42.Kd2 Rd4 43.Kc1 Rh4 44.Ra5 Kb6+-) 42...Re7 (better 42...Kb6+-) 43.Be2?? (43.Bc2 Kb6+-) 43...Rg7?? (better 43...Rh7 44.Ra5 Kb6 45.Rb5 Kc6=) 44.Ra5+- Kb6 45.Rb5 (45.Ra6 Kb7 46.Rh6 c5+-) 45...Kc6 46.Rh5 Kd7 47.Rh6 Rh7?? (better 47...Ke7+-) 48.Bg4 (48.Rh7 Kd6 49.Rh8 Kd5+-) 48...Ke7 (48...Kd8 49.Rh7 Be5+-) 49.Rh7 Kf6 50.Rh8 Kg5 51.Rc8 (better 51.f3 Kf4+-) 51...Kg4 52.Rc7 Kf4 53.Rc3 Kg5 54.Re3 (54.Ke2 Kf5+-) 54...Kf4 55.Ke2 Kf5 56.Rf3 (56.Rf3 Ke6 57.Rd3+-) 1–0. BeepBeepImAJeep (2755) – Pekda (2090), lichess.org, 2015.

6.Be2 Ng6 (6...Nf5 7.Nc3= (7.Nf3 Bb4 8.g4 Nd6 9.c3 Bc5 10.Qb3 Nf7) 7...Bb4 8.g4 Ne7 9.Nf3 0-0 10.Rg1 Qd6; 6...e4 7.Nc3 Kf7 8.d3 ed3 9.Bd3 Nd7 10.Nf3 Nc5) 7.Nf3+= c5 (7...Bb4 8.h4+= (8.Nc3 0-0 9.0-0 Be6 10.h4 Ne7) 8...e4 9.Nd4 0-0 10.h5 Ne5) 8.d3 (8.0-0 e4 9.Ne1 Bd6 10.Nc3 Be6) 8...Be7 (8...Be6 9.h4+= Nd7 10.Nc3 Bd6) 9.0-0 (9.h4!?+/– Nf8 10.Nc3 Ne6) 9...0-0+= 10.c4 (10.Nbd2 Be6+= (10...Bf5+=); 10.h4 Bg4) 10...dc4 (10...d4 11.h4=) 11.dc4+= Be6 (11...e4 12.Nfd2 f5 13.Nc3+=) 12.Nc3 (12.Qc2 Nd7 13.Rd1 Qc7+/–) 12...Nd7 (12...f5 13.e4+=) 13.Qc2 (13.h4 f5 14.h5 Nh4+/–) 13...f5+= 14.Rfd1 (14.Rad1 e4 15.Nd2 Bf6+=) 14...e4= 15.Ne1 Qe8 16.Nd5 Rc8 (16...Qf7 17.Rd2+=) 17.Qc3 Qf7 18.Qa5 (18.Ne7 Qe7 19.f4 Ra8+=) 18...f4 19.Qc3?? (19.Ne7 Qe7 20.Qd2 Nb6+=) 19...fe3?? (19...Bd5!? 20.cd5 Bf6–/+) 20.Qe3?? (better is 20.Ne7 Ne7 21.Qe3+=) 20...Bg5–/+ 21.f4 (21.Qg5?? Qf2 22.Kh1 Qf1 23.Bf1 Rf1) 21...Nf4 22.Qe4?? (better is 22.Nf4!? Qf4 23.Qf4 Bf4 24.Nc2+=) 22...Nd5 (better is 22...Bd5 23.Qf4 Bf4–+) 23.Nf3–/+ (23.cd5?? Qf2 24.Kh1 Qf1 25.Bf1 Rf1) 23...N5f6 24.Qb7? (better is 24.Ng5!? Ne4 25.Nf7 Rf7 26.a5–/+) 24...Be3–+ 25.Kh1 Ng4 26.Rf1 Qh5 27.Qe4? (27.h3 Qh6 28.Bd3–+) 27...Rce8 28.Qb7 (28.h3 Nf2 29.Rf2 Bh3 30.Qd5 Qd5 31.cd5 Bf2 32.Bf1–+) 28...Rf3! 29.h3 Rh3! 30.gh3 Qh3 0–1. Ruhle,Ernst Albrecht (1685) – Niedermayer,Anton (1950), Seefeld op, 1993.

6.Nf3 Kf7 (6...Be6 7.Nc3 Nd7 8.Nh4 Kf7 9.Be2 Ng6 10.Bh5 Nb6) 7.Nc3 Be6 8.Be2 Nf5 9.g4 Nd6 10.Rg1 c5.

4.a4 a6

5.e3 Be6 6.Nf3 Nd7 7.d4 e4 8.Nfd2 ab5 9.ab5 Ra1 10.Ba1 f5 11.c4 Ngf6 12.c5 g6 13.g3 Ng4 14.Be2 Bg7 15.Nb3 b6 16.N1d2 0-0 17.0-0 h5 18.h3 Nh6 19.f4 ef3 20.Bf3 Nf6 21.h4 (21.Bg2 Ne4 22.Qe1 Qg5=) 21...Ne4 22.Kg2 Ng4 23.Re1 Bf6 24.Nf1 Bh4 25.gh4 Qh4 26.Re2?? (better is 26.Qe2=) 26...Ngf2 27.Qc2?? (27.Rf2 Qf2 28.Kh1–+) 27…Qh1 0–1. Schwichtenberg,Juergen (1630) – Bogorad,Michail (2195), 12sen.WM–H Bad Naumburg, 2002.

5.Nf3 ab5 6.ab5 Ra1 7.Ba1 Bd7 8.e3 Bd6 9.Be2 Ne7 10.0-0 (10.d4 e4 11.Nfd2 c6=) 10...0-0 11.Nc3 (11.d4 e4 12.Nfd2 Re8=) 11...c6 12.Bb2 Qb6 13.e4 d4 14.Nb1 White gets the initiative 14...cb5 15.c3 Nbc6 16.Qb3 Kh8 17.cd4 (17.Bb5?? Na5 18.Qc2 Bb5–+; worse is 17.Qb5 Qb5 18.Bb5 Bg4+=) 17...Nd4 18.Nd4 ed4 19.Qd3 Nc6 20.Na3 Increasing the pressure on the isolated pawn on b5 20...Ne5 (20...Ra8!? 21.Nc2 Be6 22.Qb5 Bc5+=) 21.Bd4= Nd3 22.Bb6 Nf4 (better is 22...Nf2!? 23.Kf2 Ba3=) 23.Bb5+/– Ba3 (23...Be6 24.Nc4 Be7 25.Ne3+-) 24.Bd7 g5 (better is 24...Nd3!?+/–) 25.Ra1+- Bb2 26.Ra7 Rf7 (26...Bd4 27.Rb7 Bb6 28.Rb6+-) 27.Rb7 Kg7 28.Kf1 h5 (28...Nd3 29.Bc8+-) 29.d4 h4 30.d5 g4 (30...Nd3 31.Be3+-) 31.Ra7 h3 (31...g3 32.hg3 hg3 33.fg3 Ng6+-) 32.g3 Nd3 33.Bg4 Ra7 34.Ba7 Kf7 35.Ke2 Ne5 36.Bh3 Ba3 (36...Ke8 37.Be6+-) 37.Be6 (37.f4 Ng6+-) 37...Kg6 38.f4 Nc4 39.h4 Bd6 (39...Na5 40.g4+-) 40.Kd3 (40.Bd4 Bb8+-) 40...Nb2 41.Kc3 Nd1 (41...Na4 42.Kd4 Bb4 43.g4+-) 42.Kc2 (42.Kc2 Bb4 43.Kd1+-) 1–0. lucya (2160) – Gibria, GameColony.com, 2002. (=1.a4 d5 2.b4 e5 3.Bb2 f6 4.b5 a6)

5.e3 ab5

6.ab5 c6?? 7.Ra8+- Nd7 8.c4 (better 8.d4!? Nb6 9.Ra7 e4+-) 8...Nb6 9.cd5 (better 9.Ra2+-) 9...Na8 10.dc6 bc6 11.bc6 Qc7 (11...Ne7 12.Qa4 Nb6 13.Qb5+-) 12.Nc3 Ne7 13.Qa4 (better 13.d4 Nc6 14.d5+-) 13...Qc6?? (better 13...Nb6 14.Qh4 Nc6+-) 14.Bb5+- Bd7 15.Bc6 Bc6 16.Qb4 (better 16.Qg4 Nb6+-) 16...Bg2 17.f3 Bh1 18.Qb8 Kf7 19.Qa8 g6 (19...h5 20.Qa2 Ke8 21.Qa4 Kd8 22.Qa5 Ke8 23.Qb5 Kf7 24.Qc4 Ke8 25.Qf1+-) 20.Kf2 Bg7 (20...Kg7 21.Ne4 Nf5+-) 21.Nh3 (better 21.Qa2 Ke8 22.Qe6+-) 21...Ra8–+ 22.Ne2 (22.Ke2 Bg2 23.Nf2 f5–+) 22...Ra2 23.Bc3 (23.Bc1 Rc2–+) 23...Nd5 24.Kg1 (24.f4 e4–+) 24...Nc3 (better 24...Bf3 25.Nc1 Rc2 26.Nd3 Nc3 27.dc3–+) 25.Nc3 Rd2 (better 25...Ra1 26.Kf2–+) 26.Kh1 f5 (26...Rd3 27.Ne4–+) 27.Kg1 (27.e4 Bh6 28.ef5 gf5–+) 27...e4! 28.Nb5 (28.fe4 Bc3) 28...ef3 (better 28...Bh6 29.f4 Re2–+) 29.Nf2 (29.Ng5 Kf6 30.Nf3–+) 29...Rb2 (29...Bh6 30.Nd1 Rd1 31.Kf2 Rd2 32.Kf3 Rh2 33.Nd4–+) 30.Nd6 (30.Nd3 Rb5 31.Kf2 Rd5–+) 30...Ke6 31.Nc4 (31.Nd3 Rg2 32.Kf1 Kd6–+) 31...Rb1 32.Nd1 Rd1 33.Kf2 Rc1 (better 33...Kd5 34.Kg3–+) 34.Nd2 (34.Na5 Kd5 35.Kf3 Rb1–+) 34...Rc2 35.Ke1 Bc3 (35...Bc3 36.Kf2 Rd2 37.Kf3 Rh2–+) 0–1. RichardSommer (2105) – Anar_AZE (2150), lichess.org, 2020.

6.Bb5 c6 7.Be2 Bd6 8.Bh5 g6 9.Be2 Ne7 10.Nf3 0-0 11.0-0 e4 12.Nd4 Na6 13.c4 Qc7 14.h3 Bh2 15.Kh1 Be5 16.Nc3 c5 (16...Bd4 17.ed4 Be6 18.Qb3=) 17.Ndb5 +=. Zulauff,Harri – Munkwitz,Wolfgang, TT–18.47 ETC, 2005.

6.ab5 Ra1

7.Ba1 c6 8.c4 Be6 9.bc6 bc6 10.cd5 cd5 11.Qa4 Kf7 12.Nc3 Nd7 13.Nf3 Nh6 14.Bb5 Be7 15.0-0 Nf5 16.d4 e4 17.Nd2 Nb6 18.Qa7 Qd6 19.Rb1 Ra8 20.Qb7 Rb8 21.Qa7 Ra8 22.Qb7 ½–½. pcmvr – pierred (2800), net–chess.com, 2016.

7.Ba1 c6 8.c4 Be6 9.cd5 cd5 10.Nf3 Bb4 (10...Bd6 11.d4 e4 12.Nfd2=) 11.Be2 (11.Qb3 Bd6=) 11...Nd7 12.0-0 Ne7 13.d4 e4 14.Nfd2 0-0 (14...Qa5 15.Nb3 Qc7 16.Bb2=) 15.Qb3+= Bd2 16.Nd2 f5 17.Bb2 g5 (17...Nf6 18.Ba3+=) 18.f3+/– Rf6 19.fe4 (19.Qd1 Rg6+/–) 19...fe4+= 20.Rf6 Nf6 21.Bc3 b6 22.Bb4 Qc7 23.Be7 (23.Nf1 Nf5+=) 23...Qe7= 24.Qc3 Qd6 ½–½. Melich,Jindrich (2170) – Paulovic,Milan, Prague Cedok op, 1996.

7.Ba1 c6 8.c4 Bf5 9.Nf3=.

7.Ba1 c6 8.d4 Bf5=.

7.Ba1 c5

8.Bb2 A) 8...Bd6 9.Qh5 (9.Nc3 Be6 10.Qh5 g6 11.Qf3 Qa5+=; 9.d4 ed4 10.ed4 c4 11.Nc3 Ne7+=) 9...g6 10.Qf3 e4 11.Qd1 Be6=; B) 8...Ne7 B1) 9.d4 ed4 10.ed4 c4 11.Nf3 Nf5+=; B2) 9.Qh5 g6 (9...Ng6 10.f4 Qa5 11.Nc3 d4=) 10.Qf3 Bg7 11.Nc3 Be6+=; B3) 9.f4 Nd7 (9...Ng6 10.Qh5 Qa5 11.Nc3 d4=; 9...ef4 10.Qh5 g6 11.Qh4 Ng8=) 10.Nc3 Qa5 11.Nh3 Qb4=; C) 8...Be6 C1) 9.Be2 Nd7 (9...Bd6 10.d4 Nd7 11.Bg4 Bf7=; 9...Nh6 10.d4 ed4 11.ed4 c4+=; 9...Qb6 10.Nc3 Bd6 11.Bg4 f5+=; 9...Qa5 10.Nc3 d4 11.ed4 cd4= ) 10.d4 cd4 11.ed4 Bb4+=; C2) 9.d4 ed4 (9...cd4 10.ed4 Bb4 11.Nd2 Nd7=; 9...Nd7 10.de5 fe5 11.Nd2 Ngf6=) 10.ed4 c4 11.Qh5 g6+=; D) 8...Bf5 D1) 9.Nf3 Qd7 (9...Bd6 10.Be2 Ne7 11.0-0 Qc7+=; 9...e4 10.Ng1 Bd6 11.d3 Ne7=; 9...c4 10.Be2 Qd7 11.Nh4 Be6+=) 10.Nh4 Be6 11.d4 e4+=; D2) 9.Be2 Qd7 (9...Bd6 10.Bh5 g6 11.Be2 Qa5+=; 9...c4 10.Bh5 g6 11.Bf3 Bb4+=; 9...Nd7 10.Bh5 g6 11.Be2 Qa5=; 9...Qa5 10.Nf3 Qa4 11.Nc3 Qc2+=) 10.Nf3 c4 11.Nh4 Be6+=; D3) 9.Ne2 Be6 (9...Bd6 10.Ng3 Be6 11.d4 cd4=; 9...Bg4 10.d4 ed4 11.ed4 Qa5=) 10.d4 Nd7 11.Nec3 cd4+=; E) 8...Nh6 E1) 9.Nc3 Be6 (9...Bf5 10.Qf3 Bc2 11.Nd5 Bb3+=) 10.Be2 Bd6 11.d4 cd4+=; E2) 9.d4 ed4 10.ed4 c4 11.Bc1 Nf5+=; E3) 9.Qh5 g6 (9...Nf7 10.f4 Bd6 11.Nc3 ef4=) 10.Qd1 Nf5 11.Nc3 Be6+=; E4) 9.Be2 Be6 (9...Bd6 10.d4 cd4 11.ed4 Nf7=; 9...Nf5 10.d4 ed4 11.ed4 c4+=; 9...Nf7 10.d4 ed4 11.ed4 c4+=) 10.d4 ed4 11.ed4 c4+=; F) 8...Qa5 F1) 9.Nc3 Be6 (9...Qb4 10.Qa1 Ne7 11.Be2 Bf5=; 9...d4 10.ed4 cd4 11.Ne4 Qb4=) 10.Be2 Bd6 11.Bh5 g6+=; F2) 9.Nf3 Bd6 (9...Bg4 10.h3 Bh5 11.g4 Bf7+=; 9...Ne7 10.Be2 e4 11.Ng1 Be6+=; 9...c4 10.Nc3 Be6 11.Be2 Bb4+=; 9...Be6 10.Be2 c4 11.Nc3 Bb4+= ) 10.Nc3 Ne7 11.e4 d4+=; F3) 9.Be2 Bd7 10.Bc3 Qb6 11.d4 ed4+=; F4) 9.f4 ef4 (9...Nd7 10.fe5 fe5 11.Nf3 Bd6=) 10.ef4 Ne7 11.Qh5 g6+=; F5) 9.c4 Ne7 10.cd5 Nd5 11.Nc3 Qd8=; G) 8...c4 9.e4 Qa5 (9...Bb4 10.Nc3 Bc3 11.Bc3 d4=; 9...Be6 10.ed5 Qd5 11.Nc3 Qd7=) 10.Bc1 d4 11.Bb2 Be6–/+.

8.Nc3 A) 8...Bf5 A1) 9.Nf3 Nh6 (9...d4 10.Nh4 Be6 11.Ne4 Nh6+=; 9...Ne7 10.Nh4 Be6 11.Be2 d4=; 9...Be7 10.d4 cd4 11.ed4 Bb4+=; 9...Be6 10.Be2 e4 11.Ng1 Bd6= ) 10.d4 cd4 11.ed4 Qa5+=; A2) 9.Nge2 Be6 (9...d4 10.Ng3 Be6 11.Na4 Nh6=; 9...Bg4 10.h3 Be6 11.f4 Bd6+=; 9...Bg6 10.Ng3 d4 11.Nb1 de3+=; 9...Nh6 10.Ng3 Be6 11.Be2 d4= ) 10.d4 cd4 11.ed4 Bb4+=; A3) 9.Qf3 Ne7 (9...Bc2 10.Qd5 Qd5 11.Nd5 Ne7+=) 10.e4 Qa5 11.ef5 Qa1+=; B) 8...Ne7 9.Nf3 e4 (9...Be6 10.Be2 e4 11.Ng1 Ng6+=; 9...Bf5 10.Nh4 Be6 11.Be2 d4=; 9...Bg4 10.Be2 e4 11.Ng1 Bf5=; 9...d4 10.Na4 Ng6 11.ed4 cd4= ) 10.Ng1 Be6 11.Nge2 Ng6+=; C) 8...d4 C1) 9.Ne4 Bf5 (9...Qd5 10.Qf3 f5 11.Ng5 Qf3=; 9...Be6 10.ed4 cd4 11.f4 Qd5=) 10.Qf3 Be6 11.ed4 cd4+=; C2) 9.Na4 Be6 10.Nb2 Nh6 11.Bd3 de3+=; C3) 9.ed4 cd4 10.Ne4 Be6 11.f4 Qd5=; D) 8...Be6 D1) 9.Be2 Bd6 (9...d4 10.Ne4 f5 11.Ng3 Nf6+=; 9...Nh6 10.Nf3 e4 11.Ng1 Bd6+=) 10.e4 d4 11.Nd5 f5+= ; D2) 9.Bb2 Nh6 (9...Bd6 10.Qh5 g6 11.Qf3 Qa5+=; 9...d4 10.Ne4 f5 11.Ng3 Bd6=; 9...Nd7 10.Qh5 Bf7 11.Qf3 Qa5+=; 9...Ne7 10.d4 cd4 11.ed4 Ng6+= ) 10.Be2 Bd6 11.d4 cd4+=; D3) 9.Qf3 Nh6 (9...Ne7 10.Bb2 Qa5 11.Qh5 g6+=; 9...c4 10.Bb2 Ne7 11.Ba3 Nd7+=; 9...Qa5 10.Bb2 Ne7 11.Qh5 g6+=; 9...d4 10.Na4 Qa5 11.Qb7 Qa4+= ) 10.e4 Qa5 11.Qd1 de4+=; D4) 9.Nf3 Bd6 (9...Nd7 10.Be2 Bd6 11.0-0 Ne7+=; 9...e4 10.Ng1 Bd6 11.Qh5 g6+=; 9...Nh6 10.Be2 e4 11.Ng1 Bd6+=) 10.Be2 e4 11.Nh4 g5+=; D5) 9.Bd3 Ne7 (9...Nd7 10.Qh5 Bf7 11.Qd1 Nh6+=; 9...c4 10.Be2 Nh6 11.Nf3 d4+=; 9...Nh6 10.Qh5 Bf7 11.Qh3 Nd7+=; 9...d4 10.ed4 cd4 11.Nce2 Nd7+=) 10.Be2 Ng6 11.Nf3 e4+=; D6) 9.Qh5 g6 (9...Bf7 10.Qf3 Ne7 11.Be2 Bg6+=) 10.Qf3 Qa5 11.Bb2 Bd6+=.

8.c4 Qa5 9.Bc3 (9.Nc3 d4 10.Ne4 f5 11.Ng3 Bd6+=) 9...Qa2 10.cd5 Qd5 11.Ba5 Qd6=.

8.c4 d4 9.Bd3 f5 10.ed4 ed4 11.Qf3 Nh6 12.Ne2 (12.Qg3 Qd6=) 12...g6 (12...Bd6 13.0-0=) 13.0-0 Bg7 14.Nf4 (14.Re1 0-0=) 14...0-0 15.Qd5 (15.Re1 Qd6=) 15...Qd5 16.Nd5 Be6 17.Nb6 Ng4 18.f4 Nd7 19.Re1 Kf7 20.Nd7 Bd7 21.Bb2 Bh6 (21...Ra8 22.Ba3 b6 23.Bc1+=) 22.g3 b6 23.Bc2 (23.Kg2 Bg7+=) 23...g5 24.h3 Nf6 25.fg5 Bg5 26.Rf1 Be6 27.d3 (27.Bd3 Ra8–/+) 27...Be3 (27...Rg8 28.Kh2–/+) 28.Kh2 f4 29.Bc1 (29.gf4 Bf5–/+) 29...Ra8 30.Ba3 Bf5 31.g4 Bg6 32.Rd1 Nd7 33.Kg2 Ne5 (33...Ne5 34.Kf1 Kf6–+) 0–1. Gomez,Gustavo Daniel (2530) – De Lorenzo,Giancarlo (2455), corr World Ch Semifinal, 2003.

8.c4 Be6 A) 9.Qc2 Ne7 10.d4 cd4 11.ed4 ed4+=; B) 9.Qb3 Nh6 (9...Ne7 10.d4 ed4 11.ed4 cd4+=; 9...d4 10.Bd3 f5 11.ed4 cd4=) 10.d4 ed4 11.ed4 Qe7+=; C) 9.cd5 Qd5 (9...Bd5 10.Nc3 Be6 11.Nf3 Ne7=) 10.Nc3 Qd8 11.Nf3 Ne7=.

8.c4 Nh6 9.cd5 Qd5 10.Nc3 Qe6 11.e4 Bd6=.

8.bc6 bc6 A) 9.c4 Be6 (9...Ba6 10.Nc3 dc4 11.Qa4 Qd6=; 9...Bd6 10.d4 Ne7 11.de5 Be5=; 9...Bf5 10.cd5 cd5 11.Nc3 Ne7=) 10.cd5 cd5 11.d4 Nd7=; B) 9.d4 e4 (9...Nd7 10.c4 Bb4 11.Bc3 Bc3=; 9...Bf5 10.de5 Qa5 11.Bc3 Bb4=; 9...ed4 10.Bd4 Nh6 11.Nf3 Nf5=; 9...Bb4 10.Bc3 Bc3 11.Nc3 Ne7=) 10.c4 Bd6 11.Nc3 Ne7=.

8.bc6 Nc6 9.Nf3 (9.Bb5 Nh6 (9...Bf5 10.Nc3 Bb4 11.Nge2 Nge7=; 9...Bc5 10.Nf3 Nge7 11.0-0 Qa5=; 9...Be6 10.Ne2 Bd6 11.Nec3 Nge7+=; 9...Bd6 10.Nc3 Be6 11.Qh5 g6=) 10.f4 Bg4 11.Be2 Be6+=; 9.Nc3 Bb4 (9...Bc5 10.Bb5 Nge7 11.Qh5 g6+=; 9...Nh6 10.Bb5 Bb4 11.Qh5 Nf7=; 9...Bf5 10.Bb5 Nge7 11.Nf3 Nc8=; 9...Be6 10.Bb5 Nh6 11.Qh5 Nf7=) 10.Bb5 Nge7 11.Qh5 g6+=; 9.d4 Be6 (9...Bd6 10.c4 ed4 11.Bd4 Nd4+=; 9...Bf5 10.Bd3 e4 11.Be2 Be6+=; 9...Bb4 10.Bc3 Bf5 11.Bd3 Bd3+=) 10.Bc3 Bd6 11.de5 fe5+=; 9.Qh5 g6 10.Qd1 Bf5 11.Nf3 Nb4+=; 9.Be2 Nh6 (9...Be6 10.Bh5 g6 11.Be2 Bd6=; 9...Bb4 10.Bh5 g6 11.Be2 Nge7=; 9...Bd6 10.Bh5 g6 11.Be2 Bf5+=; 9...Bf5 10.Nf3 Bd6 11.Nc3 Nge7+=) 10.Nf3 Be6 11.Nc3 e4+=) 9...Nh6 (9...Bd6 10.Nc3 Nge7 11.Nb5 0-0+=) 10.Be2 (10.d4 e4 11.Nfd2 Bg4=) 10...Be6 11.0-0 (11.Nc3 e4+=) 11...Qa5 (11...Bd6+=) 12.Nc3 Bb4 13.h3 0-0 14.Bb2 e4 15.Nh2 Ra8 16.Qa1 (16.f3 Nf5 17.fe4 Ne3 18.de3 Bc3 19.ed5 Bb2 20.de6 Qc5+=) 16...Qd8 17.Qb1 Nf7 18.f3 f5 19.fe4 de4 20.d3 Qg5 21.Qc1 Nd6 22.Rf4 Ne7 23.Rf2 Rc8 24.Nb1 Nd5 25.Bd4 Nb5 0–1. ziggyblitz – aspasio, net–chess.com, 2012.

8.d4 ed4 9.ed4 c4 10.Bc3 Qe7 11.Be2 Qe4+=.

8.Be2 A) 8...Bf5 A1) 9.Bh5 g6 10.Bg4 Bg4 11.Qg4 Ne7=; A2) 9.Bb2 Qd7 (9...Bd6 10.Bh5 g6 11.Be2 Qa5+=; 9...Nd7 10.Bg4 Bg4 11.Qg4 Qa5+=; 9...c4 10.Bg4 Nh6 11.Bf5 Nf5=) 10.Nf3 c4 11.Nh4 Be6+=; A3) 9.Bf3 Qd7 (9...Nh6 10.Ne2 e4 11.Bh5 g6=; 9...d4 10.Na3 Qa5 11.Bb2 Qb4=) 10.d4 ed4 11.ed4 Qb5–/+; A4) 9.Nf3 Bd6 (9...e4 10.Nh4 Be6 11.Bg4 Bg4=; 9...Qa5 10.Bb2 Qa4 11.Nc3 Qc2+=; 9...Ne7 10.0-0 Qa5 11.Bb2 Qa4=) 10.d4 cd4 11.ed4 Qa5+=; A5) 9.c4 Ne7 10.Nf3 Ng6 11.0-0 dc4=; B) 8...Bd6 9.d4 (9.Bh5 g6 10.Be2 Ne7 11.Nf3 e4+=) 9...ed4 (9...Ne7 10.dc5 Bc5 11.Nf3 0-0=) 10.ed4 c4 11.Bh5 g6=; C) 8...Nh6 9.d4 ed4 10.ed4 c4 11.Bf3 Nf5=; D) 8...Bd7 9.Nc3 Be6 (9...d4 10.Ne4 Be6 11.ed4 cd4=; 9...Bf5 10.Bh5 g6 11.Bg4 Bg4=) 10.Bh5 g6 11.Be2 d4= ; E) 8...Be6 E1) 9.Bh5 g6 10.Be2 Bd6 11.d4 ed4+=; E2) 9.f4 ef4 (9...e4 10.Bg4 f5 11.Bh5 Bf7=; 9...Bd6 10.fe5 fe5 11.Nf3 Nd7=) 10.ef4 Qd7 11.Bh5 Kd8+=; E3) 9.Bb2 Bd6 (9...Nd7 10.d4 cd4 11.ed4 Bb4+=; 9...Nh6 10.d4 ed4 11.ed4 c4+=; 9...Qb6 10.Nc3 Bd6 11.Bg4 f5+=; 9...Qa5 10.Nc3 Bd6 11.Bh5 g6+= ) 10.d4 cd4 11.ed4 e4+=; E4) 9.Bg4 Bd7 (9...Bg4 10.Qg4 Qd7 11.Qd7 Nd7=; 9...Bf7 10.Nc3 d4 11.Ne4 Qa5=; 9...Qd7 10.Be6 Qe6 11.Nc3 f5=; 9...Qd6 10.Be6 Qe6 11.Nc3 f5= ) 10.Bd7 Qd7 11.f4 ef4+=.

8.Ne2 A) 8...Bd6 A1) 9.Ng3 Ne7 (9...Be6 10.d4 cd4 11.ed4 Nh6+=) 10.Qh5 g6 11.Qh4 Nd7+=; A2) 9.Nec3 Be6 10.Be2 Ne7 11.Bh5 g6+=; A3) 9.Nbc3 Ne7 (9...Be6 10.Ng3 Ne7 11.Qh5 Bf7+=) 10.Ng3 Be6 11.Qh5 Bf7+=; B) 8...Be6 9.Ng3 (9.d4 Nd7 10.de5 fe5 11.Nd2 Ngf6+=) 9...Bd6 (9...Nh6 10.Be2 Bd6 11.Bh5 Nf7=) 10.d4 cd4 11.ed4 Nh6+=; C) 8...Qa5 9.Nbc3 d4 10.Ne4 Be7 11.Ng1 Be6+=; D) 8...Bg4 D1) 9.Nbc3 c4 (9...Ne7 10.d4 ed4 11.ed4 c4=; 9...Nh6 10.e4 de4 11.Ne4 c4=) 10.d4 Bb4 11.f3 Be6+= ; D2) 9.f3 Bd7 (9...Be6 10.d4 Nd7 11.de5 fe5+=) 10.Ng3 Qa5 11.Nc3 d4+=; D3) 9.Bb2 Bd6 (9...Qd7 10.h3 Bh5 11.Qc1 c4+=; 9...Qa5 10.h3 Be6 11.Ng3 c4+=; 9...Nd7 10.d4 Qa5 11.Nbc3 Qb4+=; 9...Ne7 10.Nbc3 Nd7 11.h3 Be6+= ) 10.Nbc3 Ne7 11.f3 Be6–/+; D4) 9.h3 Be6 (9...Bh5 10.Nbc3 d4 11.ed4 cd4+=) 10.d4 Nd7 11.Nd2 Bd6+=.

8.Qh5 g6 9.Qd1 Be6 (9...Bf5 10.Nf3 Bd6 11.Be2 Qa5+=; 9...Bd6 10.Nc3 Be6 11.Be2 Ne7+=; 9...Ne7 10.Nf3 Bg7 11.d4 e4=; 9...Nd7 10.Be2 Bd6 11.d4 ed4+=) 10.Be2 Bd6 11.d4 ed4+=.

7.Ba1 Be6

8.Bb2 A) 8...Bd6 A1) 9.Nc3 Ne7 (9...Nd7 10.g3 Nb6 11.Bh3 Qd7 12.Be6 Qe6 13.Nf3 Nc4 14.Ba1 Ne7; 9...Kf7 10.Nh3 Ne7 11.Qf3 h6 12.e4 d4 13.Nd5 c6 14.Ne7 Be7) 10.Nf3 Nd7 11.Bd3 0-0 12.Be2 Nb6 13.0-0 Qd7 14.h3 Ra8; A2) 9.Nf3 Ne7 (9...Nd7 10.Be2 Ne7 11.0-0 0-0 12.Nc3 Qe8 13.d3 Qg6 14.Nh4 Qh6; 9...Kf7 10.Be2 Ne7 11.0-0 Nd7 12.Nc3 Nb6 13.Qa1 Nc4 14.Bc4 dc4) 10.Be2 0-0 11.Nc3 Nd7 12.0-0 Qe8 13.g3 Nb6 14.Qc1 Qd7; A3) 9.Qh5 g6 10.Qd1 Nh6 11.Nc3 0-0 12.Nf3 Nf5 13.h4 Nd7 14.h5 e4; A4) 9.g3 Ne7 (9...Kf7 10.Nc3 Ne7 11.Nf3 Nd7 12.Bg2 Nb6 13.d3 Qd7 14.0-0 Ra8; 9...Nh6 10.Nc3 Nd7 11.Bh3 Nf5 12.Nf3 Ne3 13.de3 Bh3 14.Ne5 Ne5; 9...Nd7 10.Bh3 Bh3 11.Qh5 g6 12.Qh3 Nb6 13.Nf3 Ne7 14.d3 Qa8) 10.Nc3 0-0 11.Bh3 Bh3 12.Nh3 Qd7 13.Qh5 g6 14.Qh4 d4; A5) 9.Be2 Nh6 (9...Nd7 10.Nf3 Ne7 11.0-0 0-0 12.Nc3 Qe8 13.Nh4 Nb6 14.d3 Qd7; 9...Ne7 10.Nf3 0-0 11.Nc3 Nd7 12.0-0 Qe8 13.d3 Qg6 14.Nh4 Qh6) 10.Nf3 Nd7 11.Nc3 0-0 12.0-0 Nf5 13.d3 Nb6 14.e4 d4; B) 8...Nd7 B1) 9.Nc3 Nh6 (9...Bd6 10.g3 Nb6 11.Bh3 Qd7 12.Be6 Qe6 13.Nf3 Nc4 14.Ba1 Ne7; 9...Nb6 10.Nf3 Nh6 11.Qa1 Bf5 12.Qa7 Bc2 13.Qb7 Kf7 14.Qc6 Qd6; 9...Kf7 10.Nh3 Ne7 11.f4 c6 12.g4 Kg8 13.Bg2 Qa5 14.0-0 Qb4; 9...Bc5 10.Nf3 Ne7 11.d4 Bb4 12.de5 Ne5 13.Nd4 Qd6 14.Ne6 Qe6) 10.Nh3 Bb4 11.Qh5 Bf7 12.Qh4 Qe7 13.Be2 0-0 14.0-0 Ra8; B2) 9.Nf3 Bb4 (9...Nh6 10.Nc3 Bb4 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8 14.Rb1 Nc5; 9...Bd6 10.Be2 Ne7 11.Nc3 0-0 12.0-0 Qe8 13.d3 Qg6 14.Nh4 Qh6; 9...Be7 10.Nc3 Nh6 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8 14.Re1 e4; 9...Kf7 10.Nc3 Bb4 11.Be2 Ne7 12.0-0 Nf5 13.h3 Nb6 14.e4 de4; 9...Ne7 10.Nc3 Nf5 11.Qa1 Kf7 12.Qa7 Qc8 13.e4 de4 14.Ne4 Nd6) 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Nb6 13.Qc1 Qd6 14.Na2 Ba5; B3) 9.Be2 Bb4 (9...Bd6 10.Nc3 Ne7 11.Nf3 0-0 12.0-0 Qe8 13.d3 Qg6 14.Nh4 Qh6; 9...Ne7 10.Nc3 Nf5 11.Nf3 Bb4 12.0-0 0-0 13.Qa1 Qa8 14.Rb1 Nc5; 9...Nh6 10.Nf3 Nf5 11.0-0 Bb4 12.Nc3 Kf7 13.Qa1 Qa8 14.Qb1 Nd6; 9...Kf7 10.Nc3 Nh6 11.Nf3 Nf5 12.0-0 Bb4 13.Qa1 Qa8 14.Rb1 e4; 9...Bc5 10.Nf3 Nh6 11.0-0 0-0 12.d4 Bd6 13.de5 Be5 14.Nc3 Nf5) 10.Bg4 Qe7 11.Nc3 f5 12.Be2 Ngf6 13.Nf3 0-0 14.Qa1 f4; B4) 9.Qh5 g6 10.Qd1 Bb4 11.h4 Nh6 12.Nf3 Nc5 13.c3 Ba5 14.d4 Ne4; B5) 9.g3 Nh6 (9...Ne7 10.Nc3 Nf5 11.Nf3 Nb6 12.Be2 d4 13.ed4 ed4 14.Ne4 Na4; 9...Kf7 10.Nf3 Nh6 11.Nc3 Bb4 12.Bg2 Nb6 13.0-0 Nc4 14.Ba1 Nf5; 9...Nb6 10.Nf3 Bd6 11.Nc3 Ne7 12.Be2 0-0 13.Qa1 Qe8 14.0-0 Qf7; 9...Bd6 10.Nc3 Nb6 11.Bh3 Qd7 12.Be6 Qe6 13.Nf3 Nc4 14.Ba1 Ne7) 10.Nc3 Nf5 11.Nf3 Bb4 12.Bh3 Nc5 13.Bf5 Bf5 14.Nh4 Be6; C) 8...Nh6 C1) 9.Nf3 Nd7 10.Be2 Nf5 11.Nc3 Bb4 12.Qa1 0-0 13.0-0 Qa8 14.Rb1 Rd8; C2) 9.Be2 Bb4 (9...Bd6 10.Nf3 Nd7 11.Nc3 0-0 12.0-0 Bb4 13.Qb1 Qa8 14.e4 de4; 9...Nd7 10.Nf3 Nc5 11.0-0 Be7 12.Ba1 Nd7 13.Nc3 0-0 14.Bb2 Nf5; 9...Nf5 10.Nf3 Nd7 11.Nc3 Bb4 12.Qa1 0-0 13.0-0 Qa8 14.Rb1 Rd8; 9...Kf7 10.Nh3 Nd7 11.0-0 Nb6 12.Nc3 Nf5 13.g4 Nd6 14.f4 Kg8) 10.Nc3 Nf5 11.Nf3 Nd7 12.Qa1 0-0 13.0-0 Qa8 14.Rb1 Rd8; C3) 9.Nc3 Nd7 (9...Bb4 10.Qh5 Bf7 11.Qh4 Qd6 12.Nge2 0-0 13.Ng3 Nd7 14.Be2 Ra8) 10.Nf3 Bb4 11.Be2 Nf5 12.0-0 0-0 13.Qa1 Qa8 14.Rb1 Rd8; C4) 9.Nh3 Nd7 (9...Be7 10.Qh5 Bf7 11.Qf3 0-0 12.Nc3 d4 13.Na4 Bd5 14.Qd1 Nd7; 9...Nf5 10.Bd3 Nd7 11.0-0 Nc5 12.Bf5 Bf5 13.f4 e4 14.Nc3 Qd7; 9...Bb4 10.Qh5 Bf7 11.Qh4 Bc5 12.Nc3 0-0 13.Bd3 Qd6 14.0-0 Nd7; 9...Bc5 10.c4 d4 11.Nf4 Bg4 12.Be2 de3 13.fe3 ef4 14.Bg4 Ng4; 9...Bd6 10.Qh5 Bf7 11.Qf3 0-0 12.Nc3 c6 13.Qg3 Nd7 14.Be2 Nc5) 10.Nc3 Nf5 11.Bd3 Nc5 12.Bf5 Bf5 13.d4 ed4 14.Qd4 c6; C5) 9.c4 dc4 10.Qc2 Qd5 11.Nc3 Qd6 12.Nf3 Nd7 13.Be2 Qb4 14.0-0 Qb3; D) 8...Ne7 D1) 9.Nf3 Nd7 (9...Kf7 10.h4 Qd6 11.Nc3 Qb4 12.Qa1 Nf5 13.Be2 Bc5 14.Na4 Nd7; 9...Nf5 10.c4 dc4 11.Qc2 Nd6 12.Na3 Bf5 13.Qd1 Bd3 14.Bd3 cd3) 10.Nc3 Nf5 11.Be2 Bb4 12.0-0 0-0 13.Qa1 Qa8 14.h3 Nb6; D2) 9.h4 Nf5 (9...Nd7 10.Nf3 Nf5 11.g4 Nd6 12.g5 Nb6 13.gf6 gf6 14.Ba3 Rg8) 10.Nf3 Nd7 11.g4 Nd6 12.g5 Nb6 13.gf6 gf6 14.Rg1 Nbc4; D3) 9.Be2 Nf5 (9...Nd7 10.Nf3 Nf5 11.Nc3 Bb4 12.0-0 0-0 13.Qa1 Qa8 14.g3 Nc5; 9...Kf7 10.Nc3 Nd7 11.Nh3 Nf5 12.0-0 Nb6 13.g4 Nd6 14.f4 Kg8) 10.Nf3 Nd7 11.Nc3 Bb4 12.Qa1 0-0 13.0-0 Qa8 14.h3 Nb6; D4) 9.Ne2 Nd7 (9...Kf7 10.Ng3 Nd7 11.Nc3 f5 12.Be2 Ng6 13.0-0 Bd6 14.d4 e4; 9...g6 10.Nbc3 Nd7 11.Ng3 Bh6 12.h4 Kf7 13.h5 Qa8 14.Be2 Qa5; 9...c6 10.Ng3 Nd7 11.Nc3 Kf7 12.Be2 g6 13.0-0 Bh6 14.Qa1 Qa8; 9...Ng6 10.h4 Nd7 11.h5 Ne7 12.Ng3 Nc5 13.h6 gh6 14.Nc3 Qd6; 9...h5 10.Nbc3 Kf7 11.Nc1 Nf5 12.Nd3 Nd7 13.Be2 h4 14.e4 de4) 10.Nbc3 Kf7 11.Ng3 f5 12.Be2 Ng6 13.0-0 Bd6 14.d4 e4; D5) 9.Nc3 Nd7 (9...Kf7 10.Nf3 Nd7 11.g4 h6 12.h4 Bg4 13.Ng5 hg5 14.Qg4 e4; 9...Nf5 10.Nge2 Bc5 11.Ng3 0-0 12.Nf5 Bf5 13.e4 de4 14.Bc4 Kh8) 10.Nge2 Kf7 11.Ng3 Nb6 12.Bd3 e4 13.Be2 Ng6 14.0-0 Bd6.

8.Nc3 A) 8...Nh6 A1) 9.Nf3 Nd7 (9...Be7 10.Bb2 Nd7 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8 14.Re1 e4; 9...Nf5 10.g4 Nd6 11.g5 Be7 12.h4 0-0 13.Bb2 Nd7 14.Rg1 Nb6; 9...Bb4 10.Bd3 Kf7 11.e4 d4 12.Qb1 Ba5 13.Na4 Qd6 14.Nb2 Qc5; 9...Bd6 10.h3 Nd7 11.Be2 0-0 12.0-0 Nf5 13.Bb2 Bb4 14.Qa1 Qa8; 9...Kf7 10.Nh4 Nd7 11.h3 Nb6 12.g3 Bb4 13.Bg2 Re8 14.0-0 Kg8) 10.Be2 Nf5 11.0-0 Kf7 12.Re1 Nd6 13.Bb2 Nb6 14.Qa1 Be7; A2) 9.Be2 Nd7 (9...Be7 10.Nf3 0-0 11.Bb2 Nd7 12.0-0 Nf5 13.Qa1 Qa8 14.Re1 e4; 9...Bd6 10.Nf3 Nd7 11.Bb2 0-0 12.0-0 Nb6 13.Qa1 Nf5 14.Qa7 e4; 9...Bb4 10.Qb1 Qd6 11.e4 Bc3 12.Bc3 de4 13.Bb4 Qb6 14.c4 c5; 9...Nf5 10.g4 Nh6 11.h3 Nd7 12.Nf3 Be7 13.Bb2 0-0 14.Qa1 Nf7; 9...Ba3 10.Nf3 0-0 11.0-0 Qd6 12.e4 d4 13.Na4 Nd7 14.Nb2 Bb2) 10.Nf3 Be7 11.0-0 0-0 12.Bb2 Nf5 13.Qa1 Qa8 14.Re1 e4; A3) 9.g3 Nd7 (9...Bb4 10.Bg2 0-0 11.Nge2 Qd6 12.0-0 Nd7 13.d4 e4 14.Na2 Ba5; 9...Nf5 10.Nge2 Bb4 11.Bg2 0-0 12.0-0 c6 13.d4 Qa5 14.de5 fe5; 9...Qd6 10.Bh3 Nd7 11.Be6 Qe6 12.Qf3 Nb6 13.Nge2 Bb4 14.e4 d4) 10.Bg2 Nb6 11.Nge2 Bb4 12.Nc1 0-0 13.Nd3 Be7 14.0-0 Qd7; A4) 9.h4 Bb4 (9...Nd7 10.Nf3 Be7 11.Be2 0-0 12.0-0 Nf5 13.Bb2 d4 14.Ne4 de3; 9...Bd6 10.Nf3 0-0 11.Bb2 Nd7 12.Qa1 Nf5 13.Be2 Nc5 14.0-0 Qd7; 9...Be7 10.Nf3 Nd7 11.Be2 0-0 12.0-0 Nb6 13.Bb2 Qd6 14.d3 Qb4; 9...Kf7 10.Nf3 Nd7 11.Be2 Bb4 12.0-0 Qe7 13.e4 de4 14.Ne4 Nc5; 9...Ba3 10.Nf3 0-0 11.Qb1 Qd6 12.b6 c6 13.Bb2 Nd7 14.Ba3 Qa3) 10.Nf3 0-0 11.Qb1 Qd6 12.e4 c6 13.Bd3 d4 14.Ne2 cb5; A5) 9.d4 Be7 (9...Bb4 10.de5 Nd7 11.Nf3 Ne5 12.Nd4 Bf7 13.Be2 0-0 14.f4 Nc4; 9...Nd7 10.de5 Bb4 11.Nf3 Ne5 12.Nd4 Bf7 13.Be2 0-0 14.f4 Nc4; 9...c6 10.de5 fe5 11.Nf3 Bd6 12.Be2 0-0 13.0-0 Nd7 14.Ne4 Be7; 9...Bd6 10.de5 fe5 11.Nf3 c6 12.Be2 Nd7 13.0-0 Nc5 14.bc6 bc6) 10.Be2 0-0 11.Nh3 Nf5 12.0-0 c6 13.Qd2 Nd7 14.Bb2 Qb6; B) 8...Ne7 B1) 9.Nge2 Kf7 (9...Nd7 10.Bb2 Nb6 11.Ng3 Kf7 12.Bd3 e4 13.Be2 Ng6 14.0-0 Bd6; 9...Qd6 10.g3 g6 11.Bb2 Nd7 12.Qa1 Kf7 13.Bg2 Nb6 14.0-0 Nc4; 9...Ng6 10.h4 Qd6 11.h5 Ne7 12.Ng3 Nd7 13.Be2 Kf7 14.Bb2 Nb6; 9...g6 10.Ng3 Kf7 11.Bb2 Qd6 12.Be2 h5 13.h4 Bh6 14.Qa1 Nd7) 10.Ng3 Qd6 11.Be2 Nd7 12.0-0 g6 13.Bb2 h5 14.h4 Qb4; B2) 9.g3 Nf5 (9...Kf7 10.Nge2 h5 11.f4 Nd7 12.fe5 Ne5 13.Nf4 Bf5 14.Be2 g6; 9...Nd7 10.Bg2 Nb6 11.Nf3 Nf5 12.0-0 Bb4 13.Ne1 0-0 14.Nd3 Qe7; 9...Ng6 10.Bh3 Bh3 11.Nh3 Bb4 12.0-0 Qd7 13.Qh5 0-0 14.Rb1 c5; 9...c6 10.Nf3 Nf5 11.g4 Nd6 12.Rg1 Be7 13.g5 Nd7 14.h4 0-0) 10.Nge2 Nd7 11.Bg2 Nb6 12.0-0 Be7 13.Nd5 Nd5 14.e4 Ng3; B3) 9.Bb2 Nd7 (9...Kf7 10.Nf3 Nd7 11.g4 Nb6 12.Rg1 Rg8 13.h4 Nc4 14.Bc4 dc4; 9...Nf5 10.Nge2 Bb4 11.Ng3 0-0 12.Qg4 Nd4 13.Qd1 Nf5 14.Qg4 Nd4) 10.Nge2 Kf7 11.Ng3 Nb6 12.Bd3 e4 13.Be2 Ng6 14.0-0 Bd6; B4) 9.Be2 Nf5 (9...Nd7 10.Nf3 Nf5 11.0-0 Be7 12.d3 Nd6 13.Bb2 0-0 14.Qd2 c5; 9...Kf7 10.Nh3 Nd7 11.0-0 Nb6 12.f4 e4 13.Bb2 Bh3 14.gh3 Nf5) 10.Nf3 Nd7 11.0-0 Kf7 12.Re1 Nd6 13.Na4 Be7 14.Bc3 Qa8; B5) 9.Nf3 Nf5 (9...Nd7 10.Nh4 Kf7 11.Be2 Ng6 12.Nf3 Bb4 13.Qb1 Qe7 14.h4 h5; 9...Kf7 10.Bb2 Nd7 11.g4 Nb6 12.Rg1 Rg8 13.h4 Nc4 14.Bc4 dc4) 10.g4 Nd6 11.Be2 Nd7 12.h4 Nb6 13.g5 d4 14.ed4 e4; C) 8...Nd7 C1) 9.Nf3 Nh6 (9...Kf7 10.Be2 Ne7 11.0-0 Nf5 12.Re1 Nd6 13.h3 Be7 14.d4 e4; 9...Bd6 10.Be2 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.d3 Qg6 14.Nh4 Qh6; 9...Ba3 10.Qb1 Ne7 11.Bb2 Bb2 12.Qb2 0-0 13.Qb4 Nc8 14.Be2 Qe7; 9...Be7 10.g3 Nh6 11.Bg2 0-0 12.0-0 Nb6 13.d3 Qd7 14.Bb2 Ra8; 9...Bb4 10.Qb1 Bd6 11.Bb2 Ne7 12.Be2 0-0 13.0-0 Qa8 14.h3 Nf5) 10.Be2 Kf7 11.0-0 Nf5 12.Re1 Bd6 13.e4 de4 14.Ne4 Bb4; C2) 9.Be2 Bd6 (9...Nh6 10.Nf3 Be7 11.0-0 0-0 12.Bb2 Nf5 13.Qa1 Qa8 14.Re1 e4; 9...Bb4 10.Nf3 Ne7 11.0-0 0-0 12.Qb1 Bd6 13.Bb2 Qa8 14.Qa1 Nb6; 9...Ba3 10.Qb1 Ne7 11.Bb2 Bb2 12.Qb2 0-0 13.Nf3 Nc5 14.d4 ed4; 9...Ne7 10.Nf3 Nf5 11.0-0 Be7 12.d3 Nd6 13.Bb2 0-0 14.Qd2 c5; 9...Kf7 10.Nh3 Bc5 11.0-0 Ne7 12.f4 Bh3 13.gh3 e4 14.Na4 Bb4) 10.Nh3 Nh6 11.Bh5 g6 12.Bf3 c6 13.0-0 0-0 14.d3 Qc7; C3) 9.Bb2 Nh6 (9...Nb6 10.Nf3 Nh6 11.Qa1 Bf5 12.d4 e4 13.Nd2 Bb4 14.Qa7 0-0; 9...Ne7 10.Nge2 h5 11.Nc1 Kf7 12.Be2 Kg6 13.Nd3 Nf5 14.e4 de4; 9...Bd6 10.g3 Nh6 11.Bh3 Nf5 12.Nf3 Ne3 13.de3 Bh3 14.Ne5 Ne5) 10.Nh3 Bb4 11.Qh5 Bf7 12.Qh4 Qe7 13.Bd3 Nc5 14.0-0 Nd3; C4) 9.Nh3 Nh6 (9...Bd6 10.Be2 Nh6 11.Bf3 c6 12.0-0 0-0 13.d3 Qc7 14.Bb2 Ra8; 9...Ne7 10.Be2 Nf5 11.0-0 Be7 12.d4 Nb6 13.g4 Nd6 14.Nb1 Nbc4; 9...Ba3 10.Qh5 g6 11.Qf3 Nb6 12.e4 Bb4 13.ed5 Nd5 14.Bc4 Nge7) 10.Be2 Be7 11.d4 Nb6 12.e4 de4 13.de5 Qd1 14.Kd1 Bf5; C5) 9.g3 Nh6 (9...Bb4 10.Qh5 g6 11.Qh4 Bc5 12.Nf3 Ne7 13.Bh3 Bh3 14.Qh3 e4; 9...Ne7 10.Bg2 Nb6 11.Nge2 Nf5 12.0-0 Be7 13.Nd5 Nd5 14.e4 Ng3; 9...Kf7 10.Bg2 Nb6 11.Nge2 Nh6 12.0-0 Be7 13.d4 Nf5 14.de5 fe5; 9...d4 10.ed4 ed4 11.Nce2 Bd5 12.f3 Ne5 13.Nd4 Nh6 14.Nh3 Bc5) 10.Bg2 Nb6 11.Nge2 Bb4 12.0-0 0-0 13.d4 Nf5 14.Qb1 Qe7.

8.d4 Nd7 9.Bc3+=.

8.Nf3 Bd6 A) 9.Be2 Nd7 (9...Ne7 10.Nc3 0-0 11.0-0 Nd7 12.Bb2 Qe8 13.g3 Nb6 14.Qc1 Qd7) 10.Nc3 Ne7 11.0-0 0-0 12.d3 Qe8 13.Bb2 Qg6 14.Nh4 Qh6; B) 9.Bb2 Nd7 (9...Ne7 10.h4 Nd7 11.Nc3 0-0 12.Be2 Nf5 13.h5 Nb6 14.0-0 Qd7) 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Qe8 13.h3 Qg6 14.Nh4 Qh6; C) 9.h4 Nd7 (9...Ne7 10.Nc3 Nd7 11.h5 h6 12.Bb2 0-0 13.Be2 Qe8 14.0-0 Qf7) 10.Nc3 Nh6 11.Be2 0-0 12.0-0 Nb6 13.Bb2 Qe7 14.d3 Bb4; D) 9.Qc1 Ne7 (9...Nd7 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Qe8 13.Bb2 Qg6 14.d3 Bh3) 10.Nc3 0-0 11.Be2 Nd7 12.Bb2 Nb6 13.0-0 Qd7 14.Ba3 Nf5; E) 9.Nc3 Nd7 (9...Ne7 10.h4 Nd7 11.h5 Nf5 12.g4 Nh6 13.Bh3 Nf7 14.h6 g6; 9...Nh6 10.Qb1 Nd7 11.Bb2 0-0 12.Qa2 Qa8 13.Qa8 Ra8 14.Be2 Bb4; 9...c5 10.bc6 Nc6 11.Qb1 Nge7 12.Qb7 0-0 13.Be2 e4 14.Nd4 Nd4) 10.Be2 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.g3 Nb6 14.Qc1 Qd7.

8.Nf3 Nd7 9.Bb2 Bb4 (9...Nh6 10.Nc3 Bb4 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8 14.Rb1 Nc5; 9...Bd6 10.Nc3 Ne7 11.Bd3 0-0 12.0-0 Nb6 13.Be2 Qd7 14.d4 e4; 9...Be7 10.Nc3 Nh6 11.Be2 0-0 12.0-0 Nf5 13.Qa1 Qa8 14.Re1 Nb6; 9...Ne7 10.Nc3 Nf5 11.Be2 Bb4 12.Qa1 Kf7 13.0-0 Qa8 14.Rb1 e4; 9...Kf7 10.Nc3 Bb4 11.Be2 Ne7 12.0-0 Nf5 13.Qa1 Qa8 14.Qb1 Rd8) 10.Nc3 Ne7 11.Be2 Nf5 12.0-0 0-0 13.Qa1 Qa8 14.Rb1 Nc5.

8.Nf3 Nd7 9.Nc3 Nh6 (9...Bd6 10.Be2 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.Nh4 Nb6 14.d3 Qd7; 9...Be7 10.e4 de4 11.Ne4 Nh6 12.Be2 0-0 13.0-0 f5 14.Ng3 Bd6; 9...Ba3 10.Qb1 Ne7 11.Be2 0-0 12.0-0 Qa8 13.Bb2 Nf5 14.Qa2 Bd6; 9...Kf7 10.Be2 Nh6 11.0-0 Nf5 12.Re1 Nd6 13.d3 Be7 14.Nh4 g6; 9...Ne7 10.Nh4 Kf7 11.Be2 Ng6 12.Nf3 Bb4 13.h4 h5 14.Bb2 Nc5) 10.Be2 Be7 11.Bb2 0-0 12.0-0 Nf5 13.h3 Bb4 14.Qa1 Qa8.

8.Nf3 Nd7 9.Be2 Qa8 (9...Bd6 10.Nc3 Ne7 11.0-0 0-0 12.Bb2 Qe8 13.g3 Nb6 14.d3 Qd7; 9...Nh6 10.Nc3 Bd6 11.0-0 0-0 12.Bb2 Nf5 13.Qa1 e4 14.Nd4 Nd4; 9...Kf7 10.Nc3 Nh6 11.0-0 Nf5 12.Re1 Bd6 13.e4 de4 14.Ne4 Nc5; 9...Ne7 10.Nc3 Nf5 11.0-0 Be7 12.d3 Nd6 13.Bb2 0-0 14.Qd2 c6; 9...Be7 10.Nc3 Nh6 11.0-0 0-0 12.d3 Nb6 13.Bb2 Nf5 14.e4 de4; 9...Bb4 10.Nc3 Ne7 11.Qb1 Bd6 12.0-0 0-0 13.Bb2 Nf5 14.g4 Ne7) 10.Bb2 (10.Nc3 Bd6 11.Bb2 Ne7 12.0-0 0-0 13.Qa1 Nb6 14.d3 Nf5) 10...Bd6 (10...Bb4 11.Nc3 Ne7 12.0-0 0-0 13.Nh4 Rd8 14.Bg4 f5) 11.0-0 (11.Nc3 Ne7 12.h4 0-0 13.0-0 Bb4 14.d3 Qe8) 11...Ne7 12.d4 (12.Nc3 0-0 13.Qa1 Nb6 14.d3 Nf5) 12...Qa2 (12...e4 13.Nfd2 Nb6 14.c4 Qa2) 13.Qc1 (13.de5 fe5 14.Qc1 0-0) 13...0-0 14.Nc3 Qa5 15.Qd2 Qb4 16.Rb1 Ra8 17.e4 Bf7 18.Qd1 ed4 19.Nd5 Nd5 (worse is 19...Bd5 20.Bd4 Qb1 21.Qb1 Be4 22.Nd2+/–) 20.ed5 Qc5 21.Nd4 Nb6 22.Nf5 Bf8 (22...Nd5? 23.Bd4 (23.Nd6?! Qd6 24.Bf3 Rd8+=) 23...Nc3 24.Bc5 Nd1 25.Bd4 (25.Rd1?! Bc5 26.Bf3 Be6 27.Bb7 Ra5=) 25...Nf2 26.Bf2+-; 22...Bd5?? A) 23.Nd6?! Qd6 (23...cd6?? 24.Bd4 Qc8 25.Bb6+-) 24.Bd4 Nd7=; B) 23.Bd4 Qa3 24.Bb6+-) 23.Bd3 Qd5 24.Qg4 g6 25.Rd1 (25.Re1 Nc4 26.Bf6 Qb5+=) 25...Be6= 26.Qh4 Bf5 (26...gf5? 27.Be2 Bg7 28.Rd5 Nd5 29.Qd4+-) 27.Qf6 Qe6 28.Qh8 Kf7 29.Qh7 Ke8 30.Bf5 gf5 (worse is 30...Qf5 31.Qc7 Qe6 32.Qb7+/–) 31.Qc7 Rc8 32.Qh7 Nc4 (32...Rc2 33.Qh5 Ke7 34.Ba3 Kf6 35.Bf8+-) 33.Bc3 Ne3 34.fe3 Rc3 35.e4 Rc2 (worse is 35...fe4 36.Qh5 Ke7 37.Qg5 Kf7 38.Rf1 Ke8 39.Qh5 Ke7 40.Qh4 Ke8 41.Rf8 Kf8 42.Qh8 Ke7 43.Qg7 Ke8 44.Qc3 Qb6 45.Kf1 Qb5 46.Ke1+/–) 36.ef5 Qe3 37.Kh1 Rd2 38.Rc1 Rd4 39.Rg1 Be7 40.f6 Bf6 41.Qb7 Rf4 42.Rd1 Re4 43.Qc6 Kf7 44.Rf1 Qf4 45.Qd7 Kg6? (better is 45...Kf8!? 46.Qd3 Qe5+=) 46.Qd3+/– Qe3 47.Qe3 Re3 48.g4 Rb3 49.Rf5 Rb2 50.h3 Bh4 51.Kg1 Rb1 52.Kg2 Bg5 53.Rc5 Rb3 54.Rc6 Kf7 55.Rb6 Bd8 56.Rb8 Ke7 (56...Bf6!?+/–) 57.h4+- Bc7 58.Rg8 (58.Rb7 Kd8 59.h5 Kc8+=) 58...Rb5 59.Rg7 Kd8 60.h5 Rb2 61.Kf3 Be5 62.Rh7 Rb4 63.g5 Rf4 64.Ke2 Ke8 65.g6 Kf8 66.Rf7 (better is 66.Ke3+/–) 66...Rf7= 67.gf7 Kf7 68.Kf3 Kg7 69.Ke4 Kh6 70.Ke5 Kh5 71.Ke6 ½–½. Kappel,Ray – Van Dosselaer,Mattias, IECG, 2010.

8.Nf3 Nd7 9.g3 Bd6 (9...Nh6 10.Bg2 Bb4 11.Nc3 0-0 12.0-0 Nb6 13.Qe2 Qe7 14.Rb1 Ra8; 9...Ne7 10.Nc3 Nf5 11.Bg2 Ba3 12.0-0 0-0 13.Re1 Re8 14.d3 Nb6; 9...Bb4 10.Nc3 Ne7 11.Qb1 Bd6 12.Bg2 Nb6 13.0-0 Qd7 14.e4 d4; 9...Bc5 10.d4 Bd6 11.de5 fe5 12.Nc3 Ngf6 13.Ng5 Qe7 14.Bg2 Nb6; 9...Kf7 10.Nc3 Nh6 11.Bg2 Nf5 12.0-0 Nb6 13.Ne1 Be7 14.Nd3 Qd7) 10.Nc3 Ne7 11.Bg2 0-0 12.0-0 Nb6 13.d3 Qd7 14.Bb2 Ra8.

8.Nf3 Nd7 9.h3 Kf7 (9...Ne7 10.Be2 Nf5 11.0-0 Be7 12.Bb2 0-0 13.Nc3 Nb6 14.Qa1 Qd6; 9...Nh6 10.Nc3 Be7 11.Be2 0-0 12.Bb2 Nb6 13.0-0 Qd6 14.d3 Qb4; 9...Be7 10.Nc3 Nh6 11.Bb2 0-0 12.Qa1 Qa8 13.Qa8 Ra8 14.Be2 Nf5; 9...Bd6 10.Nc3 Ne7 11.Be2 0-0 12.0-0 Nb6 13.d3 Qd7 14.Qd2 Ra8; 9...Bb4 10.Nc3 Ne7 11.Qb1 Bd6 12.Be2 0-0 13.0-0 Nb6 14.Qa2 Qa8) 10.Nc3 Nh6 11.Be2 Nf5 12.0-0 Ba3 13.Re1 Re8 14.Qb1 Nb6.

8.Nf3 Kf7 A) 9.Nc3 Nd7 (9...Ne7 10.Nh4 Nd7 11.Be2 Ng6 12.Bh5 f5 13.Nf3 Bd6 14.h4 h6; 9...Nh6 10.Nh4 Nd7 11.h3 e4 12.Nd5 f5 13.Nf4 Qh4 14.Ne6 Ke6) 10.Be2 Nh6 11.0-0 Nf5 12.Re1 Nd6 13.Bb2 Nb6 14.Ba3 Ndc4; B) 9.Nh4 Nh6 (9...g5 10.Nf3 Nd7 11.h3 Bc5 12.d4 Bb4 13.Bc3 Bc3 14.Nc3 e4; 9...Ne7 10.Nc3 Nd7 11.Bb2 Nb6 12.Ba3 g5 13.Qh5 Kg7 14.Nf3 Qd7) 10.c4 d4 11.ed4 ed4 12.Qc2 Bc5 13.Bd3 Nd7 14.f4 Bg4; C) 9.Bb2 Nd7 (9...Nh6 10.c4 dc4 11.Qc2 Qd5 12.Nc3 Qd6 13.Ne4 Qb4 14.Nfg5 fg5; 9...Bb4 10.Nc3 Nd7 11.Be2 Ne7 12.0-0 Nf5 13.h3 Qa8 14.d3 Nd6; 9...Ne7 10.Nc3 Nd7 11.g4 h6 12.h3 Nc8 13.Be2 Nd6 14.Qa1 Be7; 9...Bd6 10.Be2 Nd7 11.Nc3 Ne7 12.0-0 Nb6 13.Qa1 Nc4 14.Bc4 dc4) 10.Nc3 Nh6 11.Be2 Nf5 12.0-0 Bb4 13.h3 Qa8 14.d3 Nd6; D) 9.c4 Ne7 10.Nc3 Nd7 11.d4 c6 12.bc6 bc6 13.de5 Ne5 14.Ne5 fe5.

8.Nf3 Nh6 A) 9.Be2 Nd7 (9...Bb4 10.c3 Be7 11.c4 dc4 12.Qc2 Qd5 13.Nc3 Qc5 14.0-0 0-0; 9...Nf5 10.0-0 Nd7 11.Nc3 Be7 12.d3 0-0 13.Nd5 Bd5 14.e4 Nb6; 9...Be7 10.c4 dc4 11.Qc2 Qd5 12.Nc3 Qc5 13.0-0 0-0 14.Rb1 Nd7) 10.Nc3 Bd6 11.0-0 0-0 12.Bb2 Nf5 13.Qa1 e4 14.Nd4 Nd4; B) 9.Bb2 Nd7 (9...Nf5 10.c4 dc4 11.Qc2 Nd6 12.Na3 Bf5 13.Qd1 Bd3 14.Bd3 cd3) 10.Nc3 Bb4 11.Na2 Bd6 12.Nc3 0-0 13.Be2 Nf5 14.g4 Ne7; C) 9.h3 Nd7 (9...Bb4 10.Bc3 Be7 11.Bb2 Nd7 12.Nc3 0-0 13.Qa1 Qa8 14.Qa8 Ra8; 9...Kf7 10.Nc3 Nd7 11.Be2 Nf5 12.0-0 Bd6 13.d3 Nb6 14.e4 de4; 9...Nf5 10.Be2 Nd7 11.Nc3 Be7 12.0-0 0-0 13.Bb2 Bb4 14.Na4 Qe7; 9...c5 10.c4 dc4 11.Na3 e4 12.Nh2 Nd7 13.Bc4 Qe7 14.0-0 Nb6; 9...Be7 10.Nc3 0-0 11.Be2 Qd6 12.Bb2 Nd7 13.0-0 Ra8 14.Qb1 Nb6) 10.Be2 Bb4 11.Bc3 Be7 12.0-0 0-0 13.d3 Nf5 14.Bd2 Nc5; D) 9.Nc3 Nd7 (9...Be7 10.Be2 0-0 11.Bb2 Nd7 12.0-0 Nf5 13.Qa1 Qa8 14.Re1 e4; 9...Kf7 10.Be2 Nf5 11.0-0 Nd7 12.Re1 Qc8 13.h3 c6 14.Bb2 Bb4; 9...Nf5 10.g4 Nd6 11.g5 Be7 12.h4 0-0 13.Bb2 Nd7 14.Rg1 Nb6; 9...Bb4 10.Qb1 Qd6 11.Qa2 d4 12.Qa7 dc3 13.dc3 0-0 14.cb4 Qb4; 9...Bd6 10.Bd3 Nd7 11.0-0 Nb6 12.e4 d4 13.Ne2 0-0 14.Ng3 Qd7) 10.Be2 Bd6 11.Bb2 0-0 12.0-0 Nf5 13.d3 d4 14.ed4 Nd4; E) 9.c4 dc4 10.Qc2 Qd5 11.Nc3 Qc5 12.d4 Qa3 13.Bb2 Qb4 14.de5 fe5.

5.e3 c5

6.bc6 bc6 7.Nf3 Be6 (7...Nd7 8.Ba3=+) 8.Be2 (8.d4 e4 9.Nfd2 Nd7=) 8...Nd7 9.0-0 Bd6 10.d4 (10.c4 Ne7=) 10...e4-/+ 11.Nfd2 Ne7 (11...Bh2!? 12.Kh2 Qb8 13.Kg1 Qb2=+) 12.Ba3= Qc7 (12...c5 13.Nb3=) 13.Bd6 Qd6 14.c4 0-0 15.Nc3 Rfb8 16.Qc2 Kh8 (16...f5 17.c5 Qc7 18.Rab1+=) 17.Rfb1 f5 18.Rb8 Nb8 (18...Qb8 19.Rb1 Qc7 20.c5+=) 19.Rb1 Nd7 20.Rb7 (better 20.c5 Qc7 21.Qb3+=) 20...Qa3?? (better 20...c5 21.cd5 Nd5=) 21.c5 (better 21.Ncb1 Qd6 22.c5 Nc5 23.Qc5 Qc5 24.dc5+-) 21...Rb8?? (21...f4 22.Ndb1 Qa1+-) 22.Rb8 (22.Ba6?! Rb7 23.Bb7 f4+/-) 22...Nb8 23.Qb3 (better 23.Na2 f4 24.Nb1 Qa2 25.Qa2 fe3 26.fe3+-) 23...Qb3= 24.Nb3 Kg8 (24...g5 25.a5=) 25.Na2 Bc8 26.Nb4 The isolani on a6 becomes a target 26...Kf7 27.Na5 (27.h4 g6+=) 27...Ke6 28.h3 Kd7 29.g4 g6 (29...g5 30.gf5 Nf5 31.Bg4+=) 30.Kg2 (30.g5 Ng8+=) 30...Kc7 (30...g5 31.f3=) 31.Kg3 (31.g5 Ng8+=) 31...Kd7 (31...fg4 32.hg4 Kd7 33.g5+/-) 32.Kf4 Ke6 (32...fg4 33.hg4 h6 34.f3 ef3 35.Bf3 g5 36.Ke5 Ng6 37.Kf6+-) 33.Kg5 Kf7 34.h4 (34.Kh6 Kg8+=) 34...Kg7 (34...fg4!? 35.Bg4 h6 36.Kf4 Bg4 37.Kg4 Kf6=) 35.Kf4+= Kf6 36.g5 Ke6 37.Bf1 Kf7? (better 37...Kd7+/-) 38.Ke5+- Bd7 (38...f4 39.Kd6 fe3 40.fe3 Nf5 41.Kc7 Ne3 42.Kb8 Nf1 43.Kc8 e3 44.Nac6 e2 45.Ne5 Ke6+-) 39.Kd6 (39.Na6?! Na6 40.Ba6 Ke8+-; 39.Ba6?! Na6 40.Na6 Ke8+-) 39...Be8 40.Kc7 (40.Na6?! Na6 41.Ba6 f4+-; 40.Ba6?! Na6 41.Na6 f4+-) 40...Nd7 41.Nac6 Nc6 42.Nc6 (42.Kc6?! a5 43.Nd5 Nf6 44.Kd6 Nd5+-) 42...h6 43.Ba6 hg5 44.hg5 Nf8 45.Ne5 Kg7 (45...Ke7 46.a5 Ne6 47.Kb8 Ng5+-) 46.Bb5 Ne6 47.Kd6 Bb5 48.ab5 Ng5 49.b6 1-0. ZibbitVideos (2480) - trailovicmile (2215), Rated Blitz game, lichess.org, 2016.

6.Qh5 g6 7.Qd1 Bg7 (7...c4 8.Nf3=) 8.Be2 (8.d4 ed4 9.ed4 c4=+) 8...Ne7=+ 9.Nf3 0-0 (9...e4 10.Ng1=+) 10.0-0 Be6 11.d3 Qd7 12.c4 d4 13.ed4 ed4 14.Nbd2 b6 15.Ne4 Kh8 16.Re1 f5 17.Neg5 Bg8 18.h4 (18.Nd2 Re8=) 18...h6 19.Nh3 Qd6 (19...Re8 20.Qd2=) 20.Bc1 Nd7 21.Bf4 Qf6 22.Bf1 (22.Qd2 Kh7=) 22...ab5 (22...Rfe8 23.Be2=) 23.ab5 Bf7 (23...Ra1 24.Qa1 Re8 25.Qc1=) 24.Qd2 (24.Ne5 Ra1 25.Qa1 Ne5 26.Be5 Qe5 27.Re5 Be5 28.Qa6+/-) 24...Kh7 (better 24...Ra1!? 25.Ra1 Ng8=) 25.Nhg5!+/- Kg8 (25...hg5 26.hg5 Decoy) 26.Nh3 Kh7 27.Ra8 Ra8 28.Qe2 (better 28.Nhg5!? Kg8 29.Nf7 Kf7 30.Ng5 Kg8 31.Ne6+/-) 28...Ng8= 29.Ne5 (29.Qc2 Re8=) 29...Ne5=+ 30.Be5 Qe5 31.Qe5 Be5 32.Re5 Ra3 33.h5 gh5 (33...g5 34.Rf5 Bh5 35.Nf4=) 34.Rf5 (34.Nf4+=) 34...Bg6? (34...Kg6!? 35.Rf4 Ra1=) 35.Rf8 (35.Rd5 Ra7 36.Rd6 Rb7+-) 35...Bd3 36.Bd3 Rd3 37.Rb8 (37.Nf4!? Rd1 38.Kh2+/-) 37...Rc3+= 38.Rb7 (38.Rb6!? Rc4 39.Nf4 Rc1 40.Kh2+/-) 38...Kg6=+ 39.Rb6 Kf5 (39...Nf6 40.Nf4 Kf5 41.Ne6=+) 40.Rd6 (better 40.Rc6!? Rc4 41.b6+=) 40...Rc4 41.b6 Nf6 42.Rc6 Ne4 (better 42...d3!? 43.b7 d2-/+) 43.f3= (worse 43.Rh6 Nf6 44.Rh8 Rb4-/+) 43...Nd2 (43...Rc1 44.Kh2 Nd2 45.Nf2 Nf1 46.Kh3+/-) 44.Nf2 (better 44.Kf2!?+/-) 44...Rc1= Black prepares c4 45.Kh2 c4 (45...Nf1!? 46.Kh3 Rb1 47.Rc5 Kf6 48.Rh5 Kg6+/-) 46.Rc5+/- Kf4?? (46...Kg6 47.Rb5 Re1 48.Ne4 Ne4 49.b7+-) 47.Rb5 (better 47.Nd3 cd3 48.Rc1+-) 47...c3?? (better 47...Nf1 48.Kh3 Re1+/-) 48.b7 (better 48.Nd3 Ke3 49.Nc1 d3 50.Re5 Kd4+-) 48...Nf1 (48...Ke3 49.Ne4 Ne4 50.fe4+-) 49.Kh3 Ng3 (49...Ke3 50.Ne4 Nd2+-) 50.b8Q Ke3 51.Qg3 Ke2 (51...c2 52.f4 Ke2 53.Qf3 Kd2 54.Ne4 Ke1 55.Qf2 Kd1 56.Qd2) 52.Ne4 (52.Re5 Kd2 53.Qf4 Kc2 54.Qf5 Kb3 55.Qe6 Ka3 56.Qa6 Kb3 57.Qb6 Kc2 58.Re2) 52...d3 (52...Rh1 53.Qh2! Rh2 54.Kh2 c2+-) 53.Qf2 Kd1 54.Rb2! (54.Rb2 cb2 55.Qd2) 1-0. bjoernsen (2410) - HansGruber (2315), Rated Blitz game, lichess.org, 2016.

4.a4 c5

5.Na3 Bd6 6.e3 Ne7 7.Nf3 e4 8.Ng1 0-0 9.d4 c4 10.c3 Ng6 11.Nc2 f5 12.f4 ef3 13.Nf3 f4 14.ef4 Nf4 15.Kf2 Bg4 16.g3?? Nd3! 17.Bd3 Rf3 18.Qf3 Bf3 19.Bh7 Kh7 20.Kf3 Qf6 21.Kg2 Nd7 22.Rhf1 Qg6 23.Ne3 Qe4 24.Rf3 Nf6 25.Raf1 Re8 26.Bc1 a6 27.Nf5 ab5 28.Nd6 Qc2 29.R3f2 Re2 30.Bg5 Ng4 31.Re2 Qe2 32.Kh3 Qf1 33.Kg4 Qd1 34.Kh3 ba4 35.Nb5 Qb3 36.Nc7 a3 37.Nd5 a2 38.Nf4 a1Q 39.d5 Qf1 40.Kg4 Qbd1 41.Kf5 g6 42.Kf6 Qdf3 43.Ke5 Qe1 44.Kd6 Qec3 45.Be7 Qb4 46.Kd7 Qb5 47.Kc7 c3 48.Ba3 c2 49.Bc1 Qc4 50.Kd6–+ g5 51.Ke5 gf4 52.Bf4 Qcd5 53.Kf6 c1Q 54.h4 Qcc6 55.Ke7 Qde6 56.Kf8 Qcc8 (56...Qcd6) 0–1. poganinbezdom – steffanovo (1685), internet, 2011.

5.bc6 Nc6 6.e3 Be6 7.Bb5 Qb6 8.Qf3 a6 9.Bc6 bc6 10.Bc3 Bc5 11.a5 Qb5 12.Ne2 Ne7 13.0-0? Ng6?? 14.Na3 Ba3 15.Ra3=+ 0-0 16.Rb3 Qc4 17.Rfb1?? Bg4–+ 18.Qg3 Qe2 19.f3 Bf5 20.d3 Qe3 21.Kh1 e4 22.Rb7 ef3 23.gf3 Qg5 24.Qc7 Nf4 25.Rg1=+ Rac8 26.Qg7? Qg7–+ 27.Rbg7 Kh8 28.h4 Ne2?? 29.Bb2?? Ng1–+ 30.Rg1 Rg8 31.Bf6+- Rg7 32.Rg7 h5 33.Rc7 Kg8 34.Rc8 Bc8+/– 35.Kg2 Kf7 36.Be5 Ke6 37.f4 Kf5 38.Kf3 Bd7 39.d4 Be6 40.c3 Bf7 41.Ke2 Bg6 42.Kd2 Kg4 0–1. xtom – roman2112, internet, 2011.

5.e3 Bd6 6.c4 Be6 7.cd5 Bd5 8.Nc3 Ne7 (8...Be6!?=) 9.Nd5+= Nd5 10.Nf3 (10.Qf3 Bf8+-) 10...Nd7 11.Bc4 (11.Bd3 Qa5+=) 11...N7b6 12.Be2 (12.Bd3 Qd7=) 12...a5 (12...e4 13.Ng1=+) 13.d3 0-0 14.0-0 Kh8 15.Nd2 f5 16.Qb3 Qh4 (16...Qe7 17.Bf3 Nb4 18.Rfd1+=) 17.Nf3 (17.Bf3 e4 18.g3 Qe7 19.de4 fe4 20.Be4 Be5+-) 17...Qh6 (17...Qf6!?=) 18.Be5+= Rae8 (18...Be5 19.Ne5 Ne3 20.Rfc1+=) 19.Bd6 Qd6 20.Rad1 Rf6 (20...f4 21.e4+=) 21.d4 c4? (better 21...f4!? 22.e4 Re4+-) 22.Bc4+- Rh6 (22...Nc4 23.Qc4 Rb8 24.Rc1+-) 23.Bd5 Nd5 24.g3 Re4?! (24...Kg8 25.Ne5+-) 25.Rc1 (better 25.Ne5 Qe6+-) 25...Ne7 (25...Re8+-) 26.Rc5 (better 26.Ng5 Rf6 27.f3+-) 26...Rh3 (26...Rf6 27.Ng5 b6 28.Nf7 Rf7 29.Qf7 Qd8+-) 27.Ng5 Qh6 (27...Qf6 28.Rfc1 g6 29.Nh3 Re6+-) 28.Nf7 Kg8 29.Nh6 (29.Nh6 Kh8 30.Rc8 Nc8 31.Qg8) 1–0. BeepBeepImAJeep (2695) – charlesswann (2310), lichess.org, 2020.

5.e3 Bf5 6.c4 d4 7.ed4 ed4 8.d3 Bd6 9.Nf3 Ne7 10.Be2 Nd7 11.0-0 0-0 12.Nbd2 Ng6 13.Ne4 Be4 14.de4 Qc7 15.Bd3 (15.a5 Rfe8=) 15...Nde5=+ 16.Ne5 Ne5 17.g3 (17.Be2 Rae8=+) 17...Rae8 (17...f5 18.ef5 Qf7 19.Be2=+) 18.f4 Nd3 19.Qd3 Qd7 (19...Rf7 20.Rfe1=+) 20.Rae1 Qg4 21.Qf3 (21.a5 Re7=+) 21...Qg6 (21...Qf3!? 22.Rf3 Rf7–/+) 22.Bc1=+ h6 (22...Re7 23.a5=+) 23.e5 (23.a5!?=) 23...fe5=+ 24.Qd5 (24.Qb7 ef4 25.Qd5 Kh7 26.Re8 Re8 27.Bf4 Bf4 28.Rf4=) 24...Kh7 (better 24...Qe6!? 25.Qb7 Rf7–/+) 25.fe5= Rf1 26.Kf1 Qf5 27.Bf4 g5 28.ed6 Threatening mate: Qxf5 (28.Qb7? Re7 29.Qe4 Re5 30.Qb7 Kg6 31.Re5 Be5 32.Qc6 Bf6 33.Qe8 Kg7–+) 28...Qd5?? (better 28...Qd3 29.Kf2 Qc2 30.Kf1 Qd3 31.Kf2 Qc2 32.Kf1 Qd3=) 29.cd5+- Re1 (29...Rd8 30.Re7 Kg6+-) 30.Ke1 gf4 31.d7 fg3 32.d8Q (32.hg3 d3+-) 32...g2 (32...gh2 33.Qc7 Kg6 34.Qh2+-) 33.Qe7 Kg6 34.Qe4 (34.Qe4 Kf6 35.Qg2+-) 1–0. BeepBeepImAJeep (2555) – cane44 (1785), lichess.org, 2017.

5.Ra3 c4

6.Ra1 =+.

6.Rg3 Ne7 7.Na3 Nf5–/+ 8.Rf3 Bc5 9.Qa1 0-0 10.h4 Nd4 11.Rg3 Bf5 12.h5 Ba3 13.h6?? Nc2 (13...Nc2 14.Kd1 Na1 15.Rg7 Kh8 16.Ba3 Qa5–+) 0–1. xtom – fshutslonca (1650), internet, 2011.

6.h4? Ba3–+ 7.Na3 Ne7 8.h5 0-0 9.h6 g6 10.Qa1 Nd7 11.g4 Qe8 12.Bg2 Qf7 13.d3 cd3 14.cd3 Nc5 15.a5 Bg4 16.Nf3 Bf3 17.Bf3 e4 18.de4 de4 19.Bg2 Rad8 20.Nc2 f5 21.e3 Nd3 22.Ke2 Nb2 23.Qb2 Nd5 24.Nd4 f4 25.Be4 fe3 26.f3 Rfe8 27.Rf1 Qf8 28.a6 Qh6 29.Bd5 Rd5 30.ab7 Qh2 31.Kd3 Qb2 (31...Qb2 32.Kc4 Rd4 33.Kc5 Qc3) 0–1. xtom – fshutslonca (1660), internet, 2011.

5.e3 a6

6.Nc3 Bd6 7.h4?? Be6=+ 8.h5 Ne7 9.h6 gh6 10.Nf3 Nd7 11.Ne2 ab5 12.ab5 Ra1 13.Qa1 Nf5 14.g4 Ng7 15.Rh6 Bf7 16.g5 Bg6 17.Ng3 d4 18.Bd3 Bd3 19.cd3 fg5?? 20.Rd6+- 0-0 21.Ne5! Nf5 1–0. xtom (1685) – uteseta (1625), internet, 2011.

6.c4 d4 7.ed4 ed4 8.d3 (8.Bd3 Nh6=) 8...Bd6 9.Nf3 Ne7 10.Be2 a5 (10...0-0 11.0-0=+) 11.0-0= b6 12.Nfd2 Bb7 (12...0-0 13.Ne4=) 13.Bf3 Qc7 (13...Bf3 14.Qf3 Nd7 15.Qh5 g6 16.Qf3=) 14.g3 (14.Bb7 Qb7 15.Ne4 Qc7 16.Qh5 Kd8 17.Nd6 Qd6+=) 14...Nd7 (14...0-0 15.Bb7 Qb7 16.Ne4=) 15.Re1 (15.Bb7 Qb7 16.Ne4 Qc7=) 15...Ne5 (15...0-0-0 16.Bb7 Kb7 17.Ne4=) 16.Bb7= Qb7 17.Qe2 0-0-0 18.Ne4 Rhe8 (18...h5 19.h3=) 19.f4 Nf7 (19...N5g6 20.Qh5 f5 21.Nd6 Rd6 22.Re2=+ (worse 22.Qh7 Qf3–/+)) 20.Nbd2 (better 20.Qh5!? Ng8 21.Qh7+-) 20...Nf5= 21.Qg2 (21.Qg4 Qd7=) 21...Ne3=+ 22.Nd6 (22.Qh3 Kb8 23.Re2 Qd7 24.Qd7 Rd7=) 22...Nd6–/+ Threatening mate... how? 23.Qb7 Kb7 24.Rac1 Ndf5 25.Kf2 (25.Re2!?–/+) 25...Ng4–+ 26.Kg2 (26.Kf3 Nh2 27.Kg2 Ng4–+) 26...Re3 27.Nf1 (better 27.Re3 de3 28.Ne4 Rd3 29.Rc2–+) 27...Ree8?? (better 27...Rd3 28.Kh3 Nge3 29.Ne3 Ne3–+) 28.h3 (28.Nd2!?=) 28...Nge3–/+ 29.Kf3? (better 29.Ne3 de3 30.Rc3–/+) 29...Nf1–+ 30.Rf1 Re3 31.Kf2 Rde8 (31...Rd3 32.g4 Ne3 33.Rfe1–+) 32.g4?? (32.Rce1!?–/+) 32...Re2 (better 32...Ng3!? 33.Rfe1 Ne2 34.Rc2 Nf4 35.Re3 Re3 36.Rd2–+) 33.Kg1 Ne3?? (better 33...Nh4 34.Rf2 R2e3–+) 34.Rf2=+ Rf2 35.Kf2 f5 36.g5 g6 (36...Re6 37.Re1 h6 38.Bc1 hg5 39.Be3 de3 40.Re3 Re3 41.Ke3 gf4 42.Kf4=) 37.Kf3 (37.Re1 Rh8+=) 37...Kc8 38.Re1 Kd7 39.Bc1 Nc2 40.Re8 Ke8 41.h4 Nb4 42.Kg3?? (better 42.Ke2=) 42...Kd7 (better 42...Nd3 43.Ba3 Kf7–+) 43.Bd2? (43.Kf3 Nd3 44.Ba3 Ke6–+) 43...Ke6 (43...Nd3 44.Kf3–+) 44.Kf3? (44.Bc1–+) 44...Nd3 45.Ke2 Nb4 (better 45...Nb2 46.Be1–+) 46.Bb4?? (better 46.Kd1–+) 46...ab4 (46...cb4 47.Kd3 b3–+) 47.Kd3 (47.Kd2 b3 48.Kd3 Ke7–+) 47...Kd6 (47...b3 48.Kd2–+) 48.Kc2 Kc7 49.Kd3 Kb7 (49...b3!? 50.Kd2–+) 50.Kc2 Ka7 51.Kd3 Kb7?? (51...b3 52.Kd2–+) 52.Kc2 Ka7 (better 52...Kb8–+) 53.Kd3= Kb7 (better 53...Kb8–+) ½–½. BeepBeepImAJeep (2710) – Andrey11976 (2585), lichess.org, 2020.

6.d3 Bd6 7.Nd2 Ne7 8.c4 d4 (8...0-0 9.ba6 b6 10.Be2=+) 9.ed4 ed4 10.Be2 0-0 (10...ab5 11.ab5 Ra1 12.Ba1=+) 11.Ngf3 ab5 12.0-0 (12.ab5!? Ra1 13.Qa1=+) 12...b4 (12...bc4!? 13.Nc4 Be6–/+) 13.Re1=+ b6 14.Bf1 Bb7 15.Nb3 (15.Be2 Re8–+) 15...Nbc6 16.Nfd2 Na5 17.g3 Qc7 18.Bg2 Bg2 19.Kg2 Nec6 20.Qf3 (20.Qe2 Nb3 21.Nb3 Qd7–+) 20...Rae8 (20...Nb3 21.Nb3 Ne5 22.Qd5 Kh8 23.Nc1–+) 21.Qd5 Kh8 22.Ne4? (better 22.Na5 ba5 23.Ne4–+) 22...Nb3 (22...Re4 23.Re4 Nb3 24.Rd1–+) 23.Nd6 Rd8 (23...Na1? 24.Re8 Re8 25.Ne8+-) 24.Nf7 (24.Re6 Na1 25.Nb5 Rd5 26.Nc7 Re5 27.Rc6 Nc2–+) 24...Qf7 (24...Rf7 25.Rad1–+) 25.Qf7 (25.Qc6 Na1 26.Ba1–+) 25...Rf7 26.Rab1 Nca5 (26...Ra7 27.f4–+) 27.Rbd1 (27.Re6 Nd2 28.Rd1 Ndc4 29.dc4 Nc4 30.Bd4 h6–+ (worse 30...cd4 31.Rd4 Ra8 32.Rc4+=)) 27...h5 28.f4 Rdd7 (28...Ra8 29.Re6–+) 29.Kf3 Rfe7 30.Re7 (30.Kf2 Nc6–+) 30...Re7 31.Bc1 (31.Kf2 Nc6–+) 31...Nc1 32.Rc1 Re3 33.Kf2 Rd3 34.h3 Rc3 (34...Rc3 35.Rg1 b3–+) 0–1. BeepBeepImAJeep (2695) – Andrey11976 (2590), lichess.org, 2020.

5.e3 d4

6.Na3 Be6 7.Nf3 Nd7 8.c4 Bd6 9.e4 Ne7 10.d3 0-0 11.Bc1 h6 12.Be2 f5 13.Nd2 f4 14.f3 g5 15.h3 Kg7 16.Nb3 b6 17.Bd2 Ng6 18.Qc2 a6 19.Kd1 ab5 20.Nb5 Nf6 21.Nd6 Qd6 22.a5 Nh4 23.Bf1 Nh5 24.Be1 Ng3 25.Bg3 fg3 26.Ke2 Ng6 27.a6 Nf4 28.Kd2 b5?? 29.cb5+= c4 30.dc4 Qb4 31.Kd1 d3 32.Qb2 Bc4 33.Rb1?? Qb5–+ 34.Nd2 Qa4?? 35.Ke1=+ Ba6 36.Qb3?? Qd7 37.Rg1?? Qd4 38.Kd1 (38.Kd1 Rfb8 39.Qb8 Rb8 40.Rb8–+). poganinbezdom – brjh74 (1620), internet, 2011.

6.Bd3 Ne7 7.Ra3 Nd5 8.h4 Be6–/+ 9.h5 h6 10.Nf3 Bf7 11.Nh4 c4 12.Be4 Ba3 13.Na3 Nb4?? 14.Qg4 0-0?? 15.Nf5+- g5 16.hg6 Be6 17.Nh6 Kg7 18.Qe6 Qd7 19.Nf5 Kg6 20.Rh6 Kg5+- 21.Qd7 Nd7 22.Nc4 Nc5 23.f3 Ne4 24.fe4 Nc2 25.Ke2 de3 26.Nce3 Ne3 27.Ke3 a6 28.b6 Rac8 29.Kf3 Rc6 30.a5 Rc5 31.Bc3 Rc4 32.g4 Rd8 33.Rh5 Kg6 34.Ne7 Kf7 35.Nd5 Ke6 36.Rh7 Rd7 37.Rd7 Kd7 38.Nf6 Ke6 39.Nd5 Ra4 40.Nc7 Kd6 41.g5 Rb4 42.g6 Rc4 43.g7 (43.g7 Ra4 44.g8Q Ke7 45.Qg7 Kd6 46.Qe5 Kd7 47.Qe6 Kd8 48.Bf6) 1–0. xtom (1650) – nicu525 (1610), internet, 2011.

5.e3 Bf5

6.Ra3 c4 7.g4? Bg6 8.h4? Ba3–+ 9.Na3 Ne7 10.Nf3 b6 11.Qa1 0-0 12.h5 Bf7 13.g5 Nd7 14.h6 Ng6–/+ 15.hg7 Kg7 16.gf6 Qf6–/+ 17.Be2 Nc5?? 18.Rg1 Na4?? 19.Be5+- (19.Be5 c3 20.Nb1+-) 1–0. xtom – kumanova2 (1625), internet, 2011.

6.d3 d4 7.Be2 Bd6 (7...a6 8.e4 Be6 9.c4+=) 8.Nf3 (8.Bh5 g6 9.Bf3 Qe7=) 8...Ne7 (8...a6 9.c4+=) 9.0-0 0-0 10.Nbd2 (10.a5 Qd7 11.c4 dc3 12.Nc3 Rd8=) 10...Be6 11.Ne4 Nd5 12.c4 (12.Ba3 Qc7=) 12...Nb4 (12...dc3 13.Nc3 a6 14.Ne4=) 13.Qd2 f5 (13...Be7 14.a5=) 14.Nfg5 Bc8 (14...fe4? 15.Ne6 Qh4 16.g3+-) 15.Nd6 Qd6 (worse is 15...Qg5 16.f4 Qh6 17.fe5 de3 18.Qc3+-) 16.ed4 (16.a5 Nd7+=) 16...ed4 (16...cd4? 17.Ba3 a5 18.ba6 N8a6 19.Rab1+-) 17.Bf3 (17.Ba3 a5+=) 17...h6= 18.Nh3 Nd7 19.Nf4 (19.a5=) 19...Nf6 (better is 19...Ne5!?+=) 20.Rfe1 Nc2 (20...Ng4 21.a5+=) 21.Qc2+/– Qf4 22.Bc1 Qh4 (22...Qc7 23.g3+/–) 23.Ba3 Nd7 24.Qe2 (24.Re2 Qd8+/–) 24...Qf6 (24...Kh7 25.Bd5+/–) 25.Bd5 Kh8 (25...Kh7 26.Qe7 Qe7 27.Re7+/–) 26.Qe7+- Rb8 (better is 26...Qe7 27.Re7 Rd8+-) 27.Bc5 Nc5 28.Qc5 b6 (28...Ra8+-) 29.Qc7 1–0. Wall,Bill – Hercobulus, internet, 2003.

6.d3 Bd6 7.Nf3 =+.

6.Be2 Bd6 =+.

4.a4 Bc5

5.e3 c6 6.c4 cb5 7.cd5 Qd5 (7...ba4 8.Qa4 Bd7 9.Qb3=) 8.ab5 Ne7 9.Nc3 Qd8 10.Nf3 Bg4 11.Be2 0-0 12.0-0 Nd7 13.d4 ed4 14.Nd4 Be2 15.Qe2 Nb6? (15...Bd4 16.Qc4 Kh8 17.Qd4+/-) 16.Nf3?? (better 16.Ne6 Qc8 17.Nf8 Qf8 18.Qf3+-) 16...Qc7 17.Na4 Na4 18.Ra4 Qb6 19.Rc4 (19.Bd4 Rfc8+=) 19...Rac8 (19...Qb5 20.Bd4 Bd4 21.Nd4=) 20.Rfc1 (better 20.Nd4+=) 20...Kh8?? (better 20...Qb5!? 21.Bf6 Rf6=+) 21.Nd4 (21.Qc2 Qb5 22.Nd4+/- (worse 22.Rc5 Rc5 23.Qc5 Qb2=)) 21...Bd4 22.Bd4 Qb5 23.Rc8 (23.Ba7?! Rc4 24.Qc4 Qc4 25.Rc4 Nc6=) 23...Qe2 24.Rf8 Ng8 25.g3 (worse 25.Ba7 Qd2 26.Rfc8 b5+/-) 25...a5 (25...Qa2 26.Rcc8 a5 27.Rf6 (27.Rg8?! Qg8 28.Rg8 Kg8+/-) 27...Qb1 28.Kg2 Qe4 29.f3+-) 26.Rcc8 Qa2 27.Rg8 Qg8 28.Rg8 Kg8 29.Bb6 Kf7? (better 29...a4+-) 30.Ba5 Ke6 31.Bb6 Kd5 32.f4 Kc6 33.Bd4 b5 34.e4 b4 35.e5 (35.Kf2 Kb5+-) 35...fe5 36.Be5 Kd5 (36...g6 37.Kf2+-) 37.Bg7 b3 (37...Ke4 38.Kf2+-) 38.Be5 Ke4 39.Kg2 Kd3 (39...Kf5 40.Kf3+-) 40.Kh3 Kc2 (40...Ke4+-) 41.Kg4 (41.f5 b2 42.Bb2 Kb2+-) 41...b2 42.Bb2! Kb2 43.Kh5 Kc2 44.Kh6 Kd3 45.f5 Ke4 46.f6 Ke5 47.f7 (47.f7 Ke6 48.f8Q+-) 1-0. Jimito100 (2035) - edgardz (2040), Rated Bullet game, lichess.org, 2020.

5.e3 e4 6.Bd4 Bd4 7.ed4 f5 8.c4 (8.Qh5 g6 9.Qe2 Nf6+=) 8...g6 (8...dc4 9.Bc4 Qd4 10.Na3–/+) 9.Qb3 c6 10.cd5 cd5 11.Nc3 Ne7 12.Nh3 h6 (12...Qd6 13.d3=) 13.Be2 (13.Nf4 g5 14.Nfd5 Be6+/–) 13...0-0 (13...Qd6=) 14.0-0 (14.Nf4 a6 15.Rc1 ab5 16.ab5 Kh7+=) 14...a6 (14...f4!? 15.Ne4 Nf5+=) 15.ba6 (15.Nf4 Qd6 16.Ncd5 Nd5 17.Qd5 Qd5 18.Nd5 ab5 19.ab5 Ra1 20.Ra1 Rd8+/–) 15...ba6 16.Nf4 Will d5 fall? 16...Kg7 17.a5 (17.Ncd5 Nd5 18.Qd5 Qd5 19.Nd5 Nc6=) 17...Nec6 (better is 17...Nbc6=) 18.Ncd5+/– (18.Nfd5?! Nd4 19.Qc4 Nbc6=) 18...g5 19.Nb6 Nd4 20.Qc3 gf4 21.Na8 (worse is 21.Nc8 Qf6 (worse is 21...Qc8 22.Qd4 Rf6 23.Rfd1+=) 22.Bd1 f3+=) 21...Kg6 22.Bc4 Bb7 23.Nb6 Qd6 24.Kh1 Nd7? (24...f3 25.Rg1 Kh7 26.Rab1+/–) 25.Rfb1 (25.Nd7 Qd7 26.Rfb1 Bc8+-) 25...Nb6? (better is 25...Ne5+-) 26.Rb6 (26.ab6?! Rc8+-) 26...Qb6 (26...Bc6+-) 27.ab6 Rd8 28.Ba6 Ne2 (28...Bc6+-) 29.Qc7 Ba6 30.Ra6 Rd2 (30...Ra8 31.Ra8 Nd4 32.Rg8 Kf6 33.Qd8 Ke5 34.Re8 Ne6 35.b7 e3 36.b8Q Ke4 37.Re6) 31.b7 Kh5 (31...Rd6 32.Qd6 Kg5 33.Qh6 Kg4 34.h3) 32.Qf7 Kg5 (32...Kh4 33.Rh6 Kg5 34.Qg6) 33.Qg6 (33.Qg7 Kh5 34.Rh6) 33...Kh4 34.Qh6 Kg4 35.h3 1–0. Schaefer,Sascha (1965) – Korn,Lothar (1700), remoteschach.de, 2009.

5.e3 Ne7

6.c4 Be6 7.d4 (7.cd5 Nd5 8.Nf3 a6=+) 7...Bb4 (7...ed4 8.Bd4 Bd4 9.Qd4=) 8.Bc3=+ Bc3 9.Nc3 dc4 10.Qh5 (10.de5 fe5 11.Qd8 Kd8 12.Rd1 Nd7=) 10...Ng6 (10...Bf7 11.Qg4 ed4 12.Rd1=+) 11.Qd1 (11.d5 Bd5 12.Rd1 c6=) 11...0-0 (11...ed4!? 12.Qd4 Qd4 13.ed4 Nf4=+) 12.d5= Bf7 13.Bc4 Qe7 (13...Nd7 14.a5=) 14.d6 (14.Nf3!?=) 14...Qd6 15.Qd6 cd6 16.Bd5 (16.Bf7 Kf7 17.Rd1 Rd8=+) 16...Bd5 17.Nd5 Nd7 18.Rc1 (18.h4 e4=+) 18...Nc5 19.Rc4 Rac8 20.Ke2 f5 Black plans e4 (20...Nb3 21.Rc3 Rc3 22.Nc3–/+) 21.Nf3 b6 (21...e4!? 22.Nd4 Nd3–/+) 22.Rd1 e4 (22...Kh8 23.Rdc1=+) 23.Nd4= f4 24.Nf4 (better 24.Nc6!? Rce8 25.Na7=+) 24...Nf4–/+ 25.ef4 d5 26.Rc2 Rf4 (26...Ne6 27.Nc6 Nf4 28.Kf1–/+) 27.g3 (27.Ke3 Rcf8=+) 27...Rf6 28.Nc6 Rf7 (better 28...Rcf8!? 29.Ne7 Kh8–/+) 29.Rd5=+ Rcf8 Attacking the backward pawn on f2 30.Rd8? (better 30.Rdc5 bc5 31.Ke3=+) 30...Rf2–+ 31.Kd1 Rf1 (31...Rd8 32.Nd8 Rf1 33.Kd2–+) 32.Kd2 (better 32.Ke2 Rd8 33.Kf1 Rd1 34.Ke2–/+) 32...R1f2?? (32...Rd8 33.Nd8 Ra1 34.Rc4–+) 33.Kc1?? (33.Kd1 Rd8 34.Nd8 Rf1 35.Kd2–+) 33...Rc2 (33...e3!? 34.Rf8 Kf8 35.Kd1 Na4 36.Nb4–+) 34.Kc2–/+ Na4 35.Rf8 Kf8 36.Na7 Kf7 37.Kd2 Kf6 38.Ke3 Nc5 (better 38...Ke5–/+) 39.Nc8= Na4 40.Nd6 (40.Ke4 Nc3 41.Kd3 Nb5 42.Nb6 Nd6=) 40...Nc3 (40...Ke5 41.Ne4 Kd5 42.Kf4=+) 41.Ne4 Ne4 42.Ke4 Ke6 43.g4 g5 44.Kd4 Kd6 45.h3 ½–½. hamiltonharris (1865) – aldwark (1730), ChessWorld.net, 2015.

6.Nf3 a6 7.c4 ab5 8.ab5 Ra1 9.Ba1 0-0 10.cd5 Nd5 11.Nc3 c6 12.Nd5 (12.Bc4 Kh8=) 12...cd5 13.Be2 b6 14.0-0 Bd7 (better 14...Bd6!?=) 15.d4+/- ed4 16.Nd4 Qe8 (16...Bc8 17.Bf3+/-) 17.Qb3+- Be6 (17...Qe5 18.Bf3 Bd6 19.Bd5 Kh8 20.Nf3+-) 18.Ne6 Qe6 19.Rd1 Rd8 20.Bf3 Kh8 21.Bd5 Qe7 22.h3 g6 23.Qc3 Kg7 24.Bf3 Rc8 25.Qb2 Nd7?? (25...Rc7 26.Qa2+-) 26.Bc6 (better 26.Rd7 Kf8 27.Re7 Be7 28.Qd2+-) 26...Ne5 27.f4?? (better 27.Bd5+-) 27...Nc6-/+ 28.bc6 Rc6 29.Qb5 (29.Re1!?-/+) 29...Be3 30.Kh1 Rc2?? (better 30...Qc7-+) 31.Qc6?? (better 31.Rd7 Rc1 32.Kh2 Bf4 33.g3 Rc2 34.Kh1+-) 31…Rc6-+ (31...Rc6 32.Bb2 Rc2-+) 0-1. brucepeng (2000) - Alvik1973 (2000), lichess.org, 2020.

6.Nf3 Bg4 7.Be2 0-0 8.0-0 c6 9.d4 Bd6 (9...Bf3 10.Bf3 Bd6 11.e4=) 10.de5+= Bf3?? (10...fe5 11.Ne5 Be2 12.Qe2 Nd7+=) 11.Bf3 (better 11.ed6 Be2 12.de7 (12.Qe2?! Qd6 13.c4 Qe6=) 12...Bd1 13.ed8Q (13.ed8B?! Bc2 14.Bc7 Rc8+-) 13...Rd8 14.Rd1+-) 11...fe5 12.bc6 bc6 13.Nd2 Nd7 14.Rb1 Rb8 15.g3 (15.c4 Nc5=) 15...Nf5 (15...Nc5 16.c4-/+) 16.Bg2 (better 16.e4 Ne7 17.ed5 cd5 18.c4=) 16...Qg5?? (16...Nc5 17.c4 e4 18.cd5 cd5 19.Ba3-/+) 17.Nf3 (better 17.e4 Nc5 18.ef5 Na4 19.Ba1 Qf5 20.c4+/-) 17...Qh6 18.Qe2 (better 18.c4 e4 19.Nd4 Nd4 20.Bd4 Rb1 21.Qb1=) 18...Rbe8 (18...e4!? 19.Nd4 Ne5 20.Nf5 Rf5 21.Be5 Be5 22.Rb8 Bb8=) 19.Qa6 (19.e4!? Ne7 20.ed5 Nd5 21.c4+=) 19...e4=+ 20.Nd4 Ne5 21.Nf5 (worse 21.Qa7 Ng4 22.h3 Ng3 23.fg3 Qe3 24.Kh1 Nf2 25.Rf2 Qf2=+) 21...Rf5 22.Qa7 (22.Be5 A) worse 22...Ree5 23.Qc6 (23.Qa7?! Rf7 24.Rb8 Bf8+/-) 23...Rf7 24.Rfd1+-; B) 22...Be5 23.c4 Qd6+=) 22...Rh5 (22...Rf7 23.Qa6 Rff8 24.Be5 Be5+=) 23.h3 (better 23.Be5 Rhe5 24.c4+=) 23...Rh3?? (better 23...Nf3 24.Bf3 ef3-/+) 24.Bh3?? (better 24.Be5 Re5 25.Rb8 Bf8 26.Qc5+-) 24...Qh3+= 25.Be5 Be5 26.Qd7?? (better 26.Rb7 h5 27.Rf7+=) 26…Qd7-+ (26...Qd7 27.c4 dc4-+) 0-1. brucepeng (2015) - zrmk (2060), lichess.org, 2021.

4.a4 c6

5.Na3 Bd7 6.e3 Bd6 7.c4 Ne7 8.bc6 bc6 (8...Bc6 9.Rc1=+) 9.cd5= cd5 10.Nb5 Bb4 11.Nh3 (11.Qh5!? g6 12.Qh4=) 11...a6 12.Nc3 0-0 13.Qb3 (13.Qh5 Qe8 14.Qe8 Re8-/+) 13...Nbc6 14.Nd5 Be6 (14...Bd2 15.Kd1 Rb8 16.Ne7 Kh8 17.Qc2 Ne7 18.Qd2 (18.Ba6?? Bg4 19.f3 Rb2 20.Qb2 Bc3 21.Ke2 Bb2 22.fg4 Ba1 23.Ra1 Nd5-+) 18...Bh3 19.Ba3=) 15.e4 (better 15.Ne7 Kh8 16.Ng6 hg6 17.Qc2=) 15...Nd5-/+ (15...Bd5 16.ed5 Rf7 17.Bd3 Qd5 18.Bc4 Qd2 19.Kf1+=) 16.ed5 Bd5 (16...Rb8!? 17.Qd3 Bd5-+) 17.Bc4=+ Bc4 18.Qc4 Kh8 Looking at d2 19.Rd1 Qd6 20.0-0 Rfc8 (20...Bd2? 21.Bc3+-) 21.Qh4 (21.Kh1 Na5 (worse 21...Bd2 22.Qe2+/-) 22.Qe4 Nc4=+ (worse 22...Bd2 23.Bc3 Nb3 24.f4=)) 21...Bc5 (worse 21...Bd2 22.Bc3 Bg5 23.Ng5 fg5 24.Qh7 Kh7 25.Rd6+/-) 22.Kh1 Bd4 23.Bd4 Qd4 (23...Qb4 24.Nf4 Nd4 25.Nd5=+) 24.f4 (24.Qd4 Nd4 25.f4 e4=+) 24...Qa4-/+ 25.Qh5 ef4 (25...e4!?-/+) 26.Nf4 Qb5 27.Qh3 Rd8?? (27...Re8=+) 28.Ne6 (28.Ng6! Kg8 29.Qe6) 28...Rd2-/+ 29.Nc7 (29.Qf3 Rd1 30.Rd1 Rg8-+) 29...Rd1-+ 30.Rd1 Qa4 (30...Qe2 31.Qd7 Rg8 32.Ne6-+) 31.Qd7 h6?? (better 31...Rg8-+) 32.Na8+- (32.Na8 Qc2 33.Nc7+-) 1-0. foytik (2305) - Patzerook (2210), Rated Classical game, lichess.org, 2016.

5.e3 a6 (--> 4.e3 c6 5.a4 a6).

5.e3 c5 6.c4 d4 7.d3 Bd6 8.Nf3 Ne7 9.Ba3 (9.Be2 0-0=) 9...0-0=+ 10.Be2 Be6 11.0-0 b6 12.h3 (12.ed4 ed4 13.Re1=) 12...Nd7 (better 12...de3!? 13.fe3 Nf5=+) 13.ed4+= ed4 14.Nd4 Bf7 (14...cd4 Exploits the pin 15.Bd6) 15.Bf3 (better 15.Nb3+=) 15...cd4?? (better 15...Be5 16.Nc2 Ba1 17.Ba8 Qa8 18.Na1 Ng6=) 16.Bd6+- Rc8 17.Be7 (better 17.Bb7 Rc5 18.Re1+-) 17...Qe7+- 18.a5 ba5 19.Ra5 (19.Re1 Ne5 20.Nd2 Qd6+-) 19...Nc5 (19...Ne5 20.Bg4 Rc7 21.Bf5+-) 20.Bc6 (20.Ra3 Qc7+-) 20...Be8 (20...a6 21.Ra3+-) 21.Re1 Qf7?? (better 21...Qc7 22.Bd5 Bf7 23.Bf7 Qf7+-) 22.Bd5+- (22.Bd5 Qd5 23.cd5+-) 1-0. RichardSommer (1960) - BattleCarrot (1960), lichess.org, 2020.

5.e3 Nd7 6.h4 Bd6 7.h5 c5 8.Ra3 b6 9.a5 c4 10.a6 Ba3–+ 11.Na3 Nc5 12.Qa1 Be6 13.Nf3 Ne7 14.g4? Bg4 15.Be2 Qd7 16.Rg1 Bh5 17.Rg7 Bg6 18.Nh4 Kf8 19.Ng6 hg6 20.Re7 Qe7 21.d4 Ne4 22.de5 fe5 23.Be5 Rh1 24.Bf1 Qh4 25.Bg7 Kf7 26.Qe5 Qf2 27.Kd1 Rf1 0–1. xtom – hakigashi (1630), internet, 2011.

5.e3 Be6 6.Na3 Bd6 7.c4 Qd7 8.cd5 cd5 9.Nc2 Ne7 10.Nf3 0-0 11.Be2 Ng6 12.0-0 Qf7 13.d4 e4 14.Nfe1 Nd7 15.f4 ef3 16.gf3 Ne7 17.Rf2 Bh3 18.f4 Rac8 19.Bg4?? Qg6–+ 20.Rg2 Bg2 21.Ng2 f5 22.Bf3 Nf6 23.h3 Ne4 24.Nce1 Qg3 25.Qe2 Rf6 26.Kf1 Qh2 27.Be4 fe4 28.Qg4 Nf5 29.Bc1 Rcf8 30.Kf2 Rg6 31.Qd1 Nh4 32.Qg4 Rg4 33.hg4 g5 34.Ra2 gf4 35.ef4 Bf4 36.Bf4 Rf4 37.Ke2 Ng2 38.Kd1 Ne3 (38...Ne3 39.Kc1 Qa2 40.g5 Rf1 41.a5 Re1) 0–1. poganinbezdom (1645) – 18smok (1815), internet, 2011.

5.e3 cb5

6.ab5 (--> 4.e3 c6 5.a4 cb5 6.ab5).

4.a4 Bd6

5.Na3 Be6 6.e3 Ne7 7.Nf3 0-0 8.c4 c6 9.Be2 Nd7 10.0-0 Qc7 11.g3 Nf5 12.d4 e4 13.Nd2 Ng3 14.fg3 Bg3 15.Bg4 Bh2 16.Kh1 f5 17.Bh5 Rf6 18.Rf2 Bg3 19.Rg2 Rh6 20.Kg1 f4 21.Nf1 Nf6 22.Ng3 fg3 23.Be2 Rh2?? 24.Nc2? Bh3–+ 25.Ne1 Bg2 26.Ng2 g5 27.Qb3 Rf8 28.Ba3?! Rf7 29.Rc1 Qd7 30.Bf1 Qh3 (30...Qh3 31.cd5 Rh1) 0–1. poganinbezdom (1635) – talty (1675), internet, 2011.

5.e3 Be6 6.Nf3 Nh6 7.Be2 Qe7 8.h3 Nd7 9.0-0 0-0-0 10.d3 g5 11.Nbd2 g4 12.hg4 Ng4 13.c4 h5 14.cd5 Bd5 15.e4 Be6 16.Nc4 h4 17.Ne3? Bc5 18.Ng4 Bg4 19.Nh2 Be2 20.Qe2 h3 21.g3 Rdg8 22.Kh1 Qe6 23.f4? Rg3–+ 24.f5 Qg8 25.Rg1 Bg1 26.Nf3–+ Bd4! (26...Bd4 27.Bd4 ed4–+) 0–1. horacyad2010 – itze54, internet, 2011.

5.e3 Bf5 6.Na3 Nd7 7.c4 c6 8.cd5 cd5 9.Nf3 Ne7 10.Be2 0-0 11.0-0 Rc8 12.h3 Be6 13.g4 Ng6–/+ 14.Nh2 Nc5 15.f4 ef4–+ 16.ef4 Ne4 17.f5 Qb6 18.Kg2?? Nh4 19.Kh1 Ng3 0–1. poganinbezdom (1675) – tzunammy, internet, 2011.

5.e3 Ne7

6.c4 0-0 7.c5 Re8 8.Be2 Bd7 9.Bd3 Bc6 10.Ke2 Bd7 11.Na3 Na6 12.Kf1 Ng6 13.Qg4 Rf8 14.f4 Normal 1-0. ZibbitVideos (2205) - Kamrosha (2255), Rated Bullet game, lichess.org, 2015.

6.c4 0-0 7.cd5 Nd5 8.Nf3?? c6 (8...e4 9.Nd4 c6 10.Nc3 Nc3 11.Bc4 Kh8 12.Bc3=) 9.Be2 (9.bc6 bc6 10.Bc4 Ba6=) 9...Be6 10.0-0 e4 (10...Nd7 11.d4=+) 11.Nd4= Bf7 12.Nc3 (12.d3 ed3 13.Bd3 Qc7=) 12...Nc3 13.Bc3 Be5 (13...Qc7 14.f4=) 14.f4 (14.Qc2 Bd5+=) 14...ef3= 15.Bf3 Qc7 16.h3 c5 17.Ne2 Bc3 18.Nc3 Nd7 19.a5 Ne5 20.a6 b6 (better 20...Nf3!? 21.Qf3 b6=) 21.Ba8+- Ra8 22.Rf4 Rd8 23.Qe2 Qd6 24.Raf1 Qd2?? (24...Qd3 25.R1f2 Qc2+=) 25.Qd2 (better 25.Rd1 Qd1 26.Nd1+- (26.Qd1?! Rd1 27.Nd1 Nd3=)) 25...Rd2= 26.Rd1 Rd1 27.Nd1 Bc4 28.Nc3 Kf7 29.Rf2 Ke6 30.Rd2 Nd3 31.g4 Nb4 (better 31...Ke7!?+=) 32.Rd8+- Nd5 33.Nd5 Bd5 34.Rb8 (34.Kf2 g5+-) 34...Bc4 (better 34...Kd6!?+=) 35.Rb7+- Bb5 36.Ra7 c4? (36...Kd6 37.Ra8 (worse 37.Rg7 Ba6 38.Rh7 Be2+-) 37...Bc6 38.Rb8+-) 37.Ra8 (37.Rb7!? Bc6 38.Rb6 Kd7+-) 37...c3 (37...Kd7 38.a7 Bc6 39.Rg8+-) 38.a7 c2?? (38...Bc6 39.Rc8 Bb7+-) 39.Rc8 Kd5 40.a8Q Ke5 41.Rc2 Bd3 (41...h5 42.Qb8 Ke6 43.Qb6 Bc6 44.Qc6 Ke7 45.Qe4 Kd6 46.Rc6 Kd7 47.Qe6 Kd8 48.Rc8) 42.Qb8 (42.Rc6 Kd5 43.Qe8 Bf5 44.gf5 b5 45.Qe6) 42...Ke6 (42...Ke4 43.Qf4 Kd5 44.Qd4 Ke6 45.Rc6 Ke7 46.Rc7 Ke6 47.Rd7 Be4 48.Qd6) 43.Rc7 (43.Qe8 Kd6 44.Rc6 Kd5 45.Qe6) 43...Bb5 (43...g6 44.Qe8 Kd5 45.Qc6 Ke5 46.Re7) 44.Qb6 Ke5 (44...Kd5 45.Qb5 Ke4 46.Kf2 f5 47.Qf5) 45.Qd4 (45.Qc5 Ke4 46.Kf2 Bd3 47.Qd4) 45...Ke6 46.Qe4 Kd6 47.Qe7 Kd5 48.Rc5 1–0. BeepBeepImAJeep (2735) – Ta4ilka (2500), lichess.org, 2020.

6.c4 c6 7.Nc3 0-0 8.Nf3 Be6 9.cd5 cd5 10.Be2 Nd7 11.0-0 Nc5 (better 11...Rc8!?=+) 12.d4+= Nd7 13.de5 fe5 (better 13...Ne5 14.Nd4 Bf7+=) 14.Qb3?? (better 14.Ng5 Nc5 15.Ne6 Ne6 16.Nd5+-) 14...Nc5=+ 15.Qa2 Kh8 16.Qb1 Rc8 17.Rd1 e4 (17...Nb3 18.Ra2=+) 18.Nd4= Bg8 (18...Qd7 19.a5=) 19.f3 (19.Bg4 Ra8=) 19...Ng6 (19...ef3 20.Bf3 Qc7 21.h3=) 20.fe4 (better 20.f4!?=) 20...Qh4 Do you see the mate threat?. Black gets strong initiative 21.Nf3 Rf3 22.e5 (22.gf3 Qh2) 22...Qh2 (22...Be5 23.Bf3) 23.Kh2+- Be5 24.Kg1 Re3 25.Bf3 (better 25.Bg4 Rd8 26.Ne2+-) 25...Bc3+- 26.Bc3 Rc3 27.Rd5 (27.Bd5!? Bd5 28.Rd5+-) 27...Nb3 (better 27...Bd5 28.Bd5 Nd3=) 28.Ra3?? (better 28.Rd1 Na1 29.Qa1+=) 28...Rc1 (better 28...Bd5 29.Bd5 Rc1 30.Qc1 Rc1 (worse 30...Nc1 31.Bb7 Rc3 32.Ra1–+) 31.Kh2 Nc5–+) 29.Qc1 Rc1 (29...Nc1?! 30.Rd7 b6 31.Ra7–/+) 30.Kh2? (better 30.Rd1 Rd1 31.Bd1–+) 30...Bd5 31.Bd5 Nc5 32.Re3 Threatening mate... how? 32...Nd7 (better 32...h5–+) 33.Re8=+ Ndf8 34.Bb7 Rc7 35.a5?? (better 35.Be4 Rf7 36.a5=) 35...Rb7–+ 36.a6 Rb5 37.Ra8 (37.Ra8 Rh5 38.Kg3 Rg5 39.Kh2–+). RichardSommer (2105) – Diky_Depok (2145), lichess.org, 2020.

6.c4 c6 7.Nf3 0-0 8.Be2 Nd7 9.0-0 Nc5 (9...cb5 10.ab5 Qc7 11.Ba3=) 10.d4 White gets the initiative 10...ed4 11.Nd4 (worse 11.Qd4 Nb3 12.Qc3 Na1 13.Ba1 Bg4–/+) 11...Ne4 (11...Qc7 12.h3=) 12.Nc3 (12.cd5 cd5 13.Bd3 Re8+=) 12...Nc3 13.Bc3 Nf5 (better 13...Qc7!?=) 14.cd5 c5 (14...Nd4 15.Bd4 (worse 15.ed4 cb5 16.ab5 Qc7=) 15...cd5 16.Rc1+-) 15.Ne6 Be6 16.de6 Qe7 17.Bc4 Rad8 18.Qf3 Nh6 (18...Nh4 19.Qh5 Ng6 20.f4+-) 19.Bd5 (19.Rfd1 Rfe8+-) 19...f5 (19...Be5 20.Rac1+-) 20.Bb7 Kh8 21.Bd5 f4 (21...Ng4 22.g3+-) 22.Qh5 (better 22.e4+-) 22...Rf5 23.Qh6 Rd5 24.ef4 (24.Qh3+-) 24...Rf5? (better 24...Rd3 25.Qg7 Qg7 26.Bg7 Kg7=) 25.g3 (better 25.Rfe1 Bf4 26.Qh3+-) 25...Rdf8? (better 25...Kg8 26.Qh4 Qh4 27.gh4 Kf8+-) 26.Rfe1 (26.Rad1 Rd8 27.Qh3 Rff8+-) 26...c4 27.Qh3 Bc5 (27...Rd5 28.Rad1 Rd3 29.Rd3 cd3 30.Re3+-) 28.Re5 (better 28.Rad1 Bd6 29.Rd6 Qd6 30.e7+-) 28...Re5 29.Be5 (29.fe5?? Rf2 30.Qg2 Qf8–+) 29...Rd8 30.Qg4 Rd2 31.Rf1 Bd4 (31...a6 32.ba6 Rd3 33.f5+-) 32.Bd4 (32.Rd1!? Rd1 33.Qd1 Be5 34.fe5 Qe6 35.Qd8 Qg8+-) 32...Rd4 33.Re1 c3 (33...Rd8 34.f5 c3 35.Qc4+-) 34.Kg2 (better 34.Qg5 Qg5 35.fg5 Rd8+-) 34...c2 (34...Rd2 35.Qf3+-) 35.Rc1 Rc4 (35...Rd2 36.f5 h6 37.Qc4+-) 36.Qf5 (36.Qe2 Qb7 37.f3 Rc7+-) 36...Qb7 (36...Kg8+-) 37.f3 Qc8 (37...Qe7 38.Qf7 Rc7 39.Qe7 Re7 40.Rc2 g6+-) 38.e7 Qe8 (38...Qf5?? 39.e8Q Qf8 40.Qf8) 39.Qf8 (39.Qf8 Qf8 40.ef8Q) 1–0. RichardSommer (2125) – nanynka (2090), lichess.org, 2020.

6.c4 c6 7.Nf3 Be6 8.d4 e4 9.Nfd2 f5 10.f4 ef3 (10...ef3 11.Qf3 0-0=) 0-1. foytik (2125) - itsmagic (2180), Rated Classical game, lichess.org, 2015.

6.c4 Be6 7.Nf3 dc4 8.Qc2 Nd7 9.Bc4 Bc4 10.Qc4 Nb6 11.Qe2 (11.Qg4 0-0=) 11...0-0 (11...a6 12.Nc3=) 12.0-0 Ng6 (12...Qd7 13.Nc3=) 13.Nc3 (13.a5 Nd7+=) 13...Bb4 (13...a5 14.d4=) 14.d4 (14.a5 Bc3 15.dc3 Nc8+-) 14...ed4 (14...Bc3 15.Bc3 e4 16.Nd2=) 15.Nd4+= White launches an attack. 15...Re8 16.a5 Qd4? (better 16...Bc3 17.Bc3 Nd5+=) 17.ed4+- Re2 18.Ne2 Nc4 (18...Nd5 19.a6 Rb8 20.ab7 Rb7 21.Ra4+-) 19.Bc3 (19.Ra4 Nb2 20.Rb4 Nd3+-) 19...Bd6 20.Rfc1 Re8 21.Ng3 b6 (21...Na3 22.b6 ab6 23.ab6+-) 22.ab6 ab6 23.Nf5 (23.Bb4 Bb4 24.Rc4 Bd6+-) 23...Bf4 24.Re1 Rd8 25.d5 (25.g3 Nd6 26.Nd6 Bd6+-) 25...Be5? (better 25...Rd5 26.Ne7 Ne7 27.Re7 Na5+=) 26.Be5+- Nce5 27.Rac1?? (27.Ra7 Nd3 28.Re3 Rd5 29.Ne7 Ne7 30.Re7 h5 31.Rec7 Rb5 32.Rg7 Kh8+-) 27...Rd5?? (better 27...Nd3 28.Ne3 f5 29.Nf5 Ne1=) 28.Rc7+- h6 (28...Nd7+-) 29.h4 (better 29.Rg7 Kh8 30.Rb7 Rb5 31.Nh6+-) 29...Nf4?? (better 29...Nf3 30.gf3 Rf5+-) 30.Ne7+- (30.Ne7 Kh7 31.Nd5 Nd5 32.Rc8+-) 1–0. RichardSommer (1965) – balakovic (1930), lichess.org, 2020.

6.Nf3 0-0 7.c4 c6 8.cd5 cd5 9.Nc3 Be6 10.Be2 b6 11.d3 Nd7 12.0-0 Rc8 13.Rc1 Kh8 14.Re1 Nc5 (14...Qe8!?=) 15.d4+= ed4 16.Nd4 (worse 16.Qd4 Nb3 17.Qd1 Nc1 18.Qc1 Qc7-/+) 16...Bg8 17.Bf3 Be5 18.Nde2 The pressure on the isolated pawn grows 18...Qd6 19.g3 Rfd8 20.Ba1 Nf5 21.Nd4 Bd4 22.ed4 Ne6 23.Nd5?? (better 23.Ne2+=) 23...Rc1-+ 24.Qc1 Ned4 (24...Nfd4?! 25.Bg2=+) 25.Bg2 Bd5 26.Bd5 Qd5 27.Rd1 (27.Bd4 Nd4 28.Re3 Nf3 29.Kf1-+) 27...Nf3 28.Kg2 Qd1 (28...N3h4 29.Kf1 Ne3 30.Ke1 Qh1 31.Ke2 Qf3 32.Ke1 Nhg2) 29.Qd1-+ Rd1 30.Kf3 (30.Bc3 Ng5 31.a5 Ne4 32.ab6 ab6-+) 30…Ra1 0-1. brucepeng (2015) - Nytorpet (2090), lichess.org, 2020.

6.Nf3 0-0 7.c4 Bg4 8.cd5 (better 8.Qb3=+) 8...Nd5?? (better 8...e4 9.h3 Bh5=+ (worse 9...ef3 10.hg4 fg2 11.Bg2+-)) 9.Bc4+- Be7 (9...c6 10.e4 Kh8 11.ed5 e4=) 10.Nc3 Be6 11.Qb3 c6 12.e4 Nc3?! (12...Nd7 13.ed5 Nc5+-) 13.Be6 (13.dc3?! Bc4 14.Qc4 Kh8+=; 13.Qc3?! Qc8=; 13.Bc3?! Bc4 14.Qc4 Kh8+=) 13...Kh8 14.Bc3 Nd7 15.bc6 (15.d4!? ed4 16.Nd4 Nc5+-) 15...Nc5 16.Qc4 Nd3 17.Ke2 Nf4 18.Kf1 bc6 19.Qc6 (19.Bg4 c5+-) 19...Rc8 (19...Qd3 20.Kg1 Ne2 21.Kf1 Ng3 22.Kg1 Qf1 23.Rf1 Ne2) 20.Qd7+- (20.Bc8?? Qd3 21.Kg1 Ne2 22.Kf1 Ng3 23.Kg1 Qf1 24.Rf1 Ne2; 20.Qc8?? Qd3 21.Kg1 Ne2 22.Kf1 Ng3 23.Kg1 Qf1 24.Rf1 Ne2) 20...Qb6 21.Qc8 (better 21.Bg4 Rb8 22.Qb5+- (22.Qe7 Qa6 23.d3 Qd3 24.Kg1 Ne2 25.Kf1 Ng3 26.Kg1 Qf1 27.Rf1 Ne2)) 21...Rc8= 22.Bc8 Qc7?? (22...Nd3 23.Bd4 ed4=) 23.Ba6+- Qb6 (23...Qc6 24.Bb5 Qe4 25.Re1+-) 24.Be2 (24.Bb5 a6 25.Bc4 Qc6+-) 24...Bc5 (24...Qc6 25.Bb5 Qe4 26.Re1+-) 25.g3 (25.Rc1 h6+-) 25...Ne2 (25...Nh3 26.d4 ed4 27.a5+-) 26.Ke2 Bf2 (26...h6+-) 27.Rhb1 Qc5 (27...Qc7 28.Kf2 g5+-) 28.Rb8 (28.Rb8 Qc8 29.Rc8) 1–0. RichardSommer (1990) – jauman (1980), lichess.org, 2020.

6.Nf3 0-0 7.Be2 Nd7 8.c4 c6 9.d4 e4 10.Nfd2 f5 11.f3 Ng6 12.0-0 Nf6 13.c5 Bc7 14.a5 Be6 15.b6 ab6 16.ab6+/– Ra1 17.Ba1 Bb8= 18.Nc3 f4 19.fe4 fe3 20.ed5 Bd5 21.Nd5 Qd5?? 22.Nf3 Ng4 23.Qc1 Nf4 24.Bc4 Ne2?? 25.Be2+- Qh5 26.h3 Nf2 27.Rf2 ef2 28.Kf2 Qh4 29.Kg1 Qg3 30.Qe1 1–0. j1a9n55 – sporin, internet, 2011.

6.Nf3 0-0 7.Be2 Be6 8.0-0 Nd7 9.d3 Qe8 10.Nbd2 Qf7 11.e4 g5 12.c3 Rad8 13.ed5 Nd5 14.c4 Nf4=+ 15.Ne4 Nc5 16.Nd6 Rd6 17.Ba3 b6 18.Bc5 bc5 19.a5? Bc4!–+ 0–1. tanto (1690) – goldbachconjecture (2000), net–chess.com, 2003.

4.a4 Be6

5.d4 Nd7 6.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 Nd7 6.a4).

5.Nf3 a6 6.Nc3 Bd6 7.e3 Ne7 8.h4 0-0 9.h5 a5 10.h6 g6 11.Nh4 b6 12.Bd3 f5 13.Ra2?? c5 14.Qa1 d4 15.Nd1 Nd5 16.e4?? Nb4–+ 17.ef5 Bf5 18.Nf5–/+ gf5 19.Bc4 Kh8 20.Ra3?? Nc2 21.Ke2 Na1 22.Ba1 Qg5 23.Rg3 Qg3! 24.fg3 e4 25.Rh5 Bg3 26.Nf2 Bf2 27.Kf2 Nd7 28.Be6 Ne5 29.Rf5 Rf5 30.Bf5 Rf8 31.g4 Ng4 32.Kg3 Nh6 33.Be4 Nf5 34.Kg4 Nd6 35.Bc6 h5! 36.Kh5 Kg7 37.Bb2 Kf6 38.Bc1 d3 39.Bb2 Ke6 40.Bg7 Rf5 41.Kg4 Rd5! 42.Bd5 Kd5 43.Kf3 Nc4 44.Bf6 Nd2 45.Ke3 Nc4 46.Kd3–/+ Ne5 47.Kc3 Nd7 48.Bd8 Kd6 49.Kc4 Ne5 50.Kc3 Nd7 51.Kc4 Ke5 52.Kd3 Kd5 53.Bc7?? c4–+ 54.Kc3 Kc5?? 55.Bd8 Kd5 56.Bc7 Nc5 57.Bb6?? Na4 58.Kc2 Nb6 59.Kb2 Kc5 60.Ka3 Kb5 61.Kb2 a4 62.Kc3 Nd5 63.Kb2 Kb4 64.Ka2 c3 65.Kb1 Nb6 66.Kc2–+ Nc4 (66...Nc4 67.Kd1 a3 68.Kc2 a2 69.Kd3 a1Q 70.Ke2 c2 71.Kf3 Qh1 72.Kf4 c1Q 73.Kf5 Qch6 74.Kg4 Q1h3) 0–1. xtom – solas1976, internet, 2011.

5.Nf3 c5 6.e3 Bd6 7.d4 e4 8.Nfd2 c4 9.c3 a6 10.Be2 Bd7 11.f3 f5–/+ 12.fe4 fe4 13.Bg4?? ab5 14.Bd7 Qd7 15.0-0 Nf6 16.ab5 Ra1 17.Ba1 Qb5 18.Rf5 0-0 19.Qc1 Nbd7 20.Na3? Qa4 21.Bb2 g6 22.Rf1 Kg7 23.Kh1 Ra8 24.Nc2 Qb5 25.Na3 Qb6 26.Nc2 Ra2 27.Ba3 Ba3 28.Na3 Qa6 29.Nc2–/+ Qa4 30.Nb4 Ra3 31.h3 Qa5 32.Qb2 b6–/+ 33.Rb1 h5 34.Kh2 g5 35.Nf1 Kg6 36.Ng3 g4 37.Qf2 1–0. j1a9n55 – menixxx, internet, 2011.

5.Nf3 Nh6 6.e3 Bd6 7.Be2 Nd7 8.0-0 Qe7 9.a5 0-0 10.a6 b6 11.Ba3 Ba3 12.Ra3 f5 13.d4 e4 14.Ne1 Qh4 15.Rc3 Rac8 16.f3 Nf6 17.Nd2 f4 (17...Bd7 18.Qb1=) 18.ef4+= e3 (better is 18...Nf5!? 19.fe4 Ne4 20.Ne4 de4+=) 19.Re3+- Qf4? (better is 19...Rce8 20.g4 Nhg4 21.fg4 Ng4 22.Bg4 Bg4+/–) 20.Re6 Qd4 21.Kh1 Nf5 22.Nd3 (better is 22.Nb3 Qh4 23.Kg1+-) 22...Ne3? (22...Qh4 23.Re1 Nd4+-) 23.Nb3 Qh4 (23...Nd1 24.Nd4 Nc3+-) 24.Re3 (24.Re3 Rcd8 25.f4+-) 1–0. fajgo – psychocamper, internet, 2002.

5.h4 c5 6.bc6 bc6 7.h5 Qb6 8.Qc1 Na6 9.a5 Qb7 10.e3 Rb8 11.Bc3 Bb4 12.Ba6 Qa6 13.Ne2 Ne7 14.h6 g6 15.Rh4 Bd6 16.Na3 Nf5 17.Ra4 0-0 18.Rb1 Rb1 19.Qb1 Rb8 20.Qa2 Kf7 21.d4 ed4 22.Nd4 Nd4 23.Rd4 c5 24.Rf4?? d4 25.Qa1 Bf4 26.ed4 cd4 27.Bd4–+ Bd5 28.c4 Re8 29.Kf1 Bc4 30.Nc4 Qc4 31.Kg1 Be5 32.Be5 fe5 33.g3 Rc8 34.Qe1 Qe6 35.Qe4 Rc6 36.a6 Ra6 37.Qf3 Qf6 38.Qb7–/+ Ke8 39.Qh7?? Ra1 40.Kg2 Qc6 41.Kh3 Rh1 42.Kg4 Qe6 (42...Qe6 43.Kf3 Qd5 44.Kg4 Qe4 45.f4 Qe2 46.Kg5 Qh5 47.Kf6 Qf5 48.Kg7 Qf7 49.Kh8 Qf8 50.Qg8 Rh6; 42...Qe4 43.f4 Qe2 44.Kg5 Qh5 45.Kf6 Qf5 46.Kg7 Qf7 47.Kh8 Qf8 48.Qg8 Rh6) 0–1. xtom – devo1, internet, 2011.

5.e3

5.e3 (--> 4.e3 Be6 5.a4).

5.e3 Nd7 6.d4 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 Nd7 6.a4).

4.a4 Bf5

5.e3 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 Bb4 9.Nc3 d4 10.ed4 ed4 11.Nce2?? d3–+ 12.Ng3 Bg6?? 13.Nf3?? Qe7–+ 14.Ne5 Qe5 15.Be2 de2 16.Ne2 Qe6 17.0-0 Ne7 18.Nd4 Qc4 19.Re1 0-0 20.Qg4 Bd2 21.Rd1 Bc3 22.Bc3 Qc3 23.Qe6 Kh8 24.Qe7 Re8 (24...Re8 25.Qe2 Re2 26.Ne2 Qe5–+) 0–1. j1a9n55 – lolo40, internet, 2011.

5.e3 Bd6

6.c4 Ne7 7.cd5 Nd5 8.Qf3 Be6 9.Bc4 Bb4 10.Ne2 a6 11.0-0 ab5 12.ab5 Ra1 13.Ba1 c5 (13...Qd6!?=) 14.d4+/– ed4 15.ed4 Qd6 16.dc5 Qc5 (16...Bc5?? 17.Rd1 Bf2 18.Kf2 Qc5 19.Rd4+-) 17.Qe4 Kf7 18.Nd4 Qc4 19.Qe6 Kg6 20.Nf3 1–0. mrkt (2515) – GermanPaul (1950), ChessWorld.net, 2003.

6.c4 Ne7 7.Nf3 c6 8.Be2 0-0 9.d4 e4 10.Nfd2 Kh8 (10...Bc7 11.Nc3=) 11.Nc3 a6? (11...Qe8 12.c5 Bc7 13.0-0=) 12.Qb3 (better 12.c5 Bc7 13.b6 Bb6 14.cb6 Qb6 15.Ba3+-) 12...ab5+= 13.ab5 Nd7 (13...Ra1 14.Ba1 Bc7 15.bc6 bc6 16.Bb2+=) 14.0-0 (better 14.Ra8 Qa8 15.cd5 cd5 16.Nd5+-) 14...Ng6? (better 14...Qc7+=) 15.cd5 (15.Ra8 Qa8 16.cd5 c5 17.Nce4 Be4 18.Ne4 Qb8 19.Nc5 Nc5 20.dc5 Bc5+-) 15...Rb8 (15...Nb6 16.Ra8 Na8 17.Nce4+-) 16.dc6 (16.Nde4 Be4 17.Ne4 Qe7 18.Nd6 Qd6 19.dc6 bc6+-) 16...bc6 17.Qc2 (better 17.Nde4!? Be4 18.Ne4 Bc7+-) 17...cb5 18.Nb5 (worse 18.Nde4 Qc7 19.Qb3 Bh2 20.Kh1 b4+-) 18...Be7 (18...Bb4 19.Ne4 Qe7 20.f3+-) 19.Ba3 (19.Ne4 Qc8 20.Qc8 Rfc8+-) 19...Re8 20.Nd6 Bd6 21.Bd6 Rc8 22.Qd1 Nb6 23.Bg3 Nd5 24.Bb5 (24.Ba6!? Ra8+-) 24...Nc3+- 25.Qb3 (25.Qh5 Nb5 26.Qf5 Nc3+-) 25...Be6 26.Bc4 (26.Qb4 Qb6 27.Rab1 Nb1 28.Rb1 Bd5 29.Be8 Rc1 30.Rc1 Qb4=) 26...Ne2 27.Kh1 Ng3 28.hg3 f5?? (better 28...Bc4 29.Nc4 Qd5+-) 29.Be6+- Re6 (29...Rb8 30.Qd5 Qf6+-) 30.Qe6 (30.Qe6 Ne7 31.Ra7+-) 1–0. BeepBeepImAJeep (2725) – kulapnit (2365), lichess.org, 2019.

5.e3 Nd7

6.c4 Ne7 7.cd5 Nd5 8.Bc4 (8.Nc3 Nb4 9.e4 Be6=+) 8...Be4 (8...Nb4!? 9.Kf1 Nb6-/+) 9.Nf3 Nb4 10.0-0 Qe7 (10...Nb6!? 11.Bb3 Bd3=+) 11.Nc3 Bd3 12.Bd3 Nd3 13.Qc2 Nb2 (13...N7c5 14.Ba3 Qd7 15.e4=) 14.Qb2 (14.Nd5!? Qc5 15.Nc7 Ke7 16.Qc5 Nc5 17.Na8+/-) 14...0-0-0 15.a5 Qb4 16.Qc2 Nc5 17.Rfb1 Qg4 18.b6 ab6 19.ab6 Bd6 (19...Qg6 20.Qa2 c6 21.d4 ed4 22.ed4+-) 20.Ra8 (better 20.bc7 Bc7 21.Nb5+-) 20...Kd7+/- 21.Rd8 Rd8 (21...Kd8 22.d4 ed4 23.ed4 Ne6 24.bc7 Bc7+-) 22.Nd5?? (better 22.Qh7 e4 23.h3+-) 22...c6= 23.Nc7 (23.Nc3 e4 24.Ne1 Qh5=) 23...e4 24.Nd4 Nd3 25.f3?? (25.h3 Qh4 26.Rf1 Bc7 27.bc7 Kc7 28.Ne6 Kd7 29.Nd8 Kd8+-) 25...ef3 (better 25...Qh4 26.Qd3 Qh2 27.Kf2 Bg3 28.Ke2 Qg2 29.Kd1 ed3-+) 26.Nf3= Ne5 (26...Qe4!?=) 27.Ne5+= fe5 28.Qh7 Rf8 29.h3 Qg3 (better 29...Qf5 30.Qf5 Rf5=) 30.Qh5?? (better 30.Rf1 Rf1 31.Kf1+=) 30...e4-/+ 31.Qg4 Qg4 32.hg4 Bc7 33.bc7 Kc7 34.Rb4 Re8 35.Rd4 b5 36.Kh2 (36.Rb4-+) 36...c5 37.Rd5 Kc6 38.Rf5 (38.Rg5 Re7-+) 38...b4 39.Rf7 (39.Kg3 b3 40.Rf1 Rd8-+) 39...Kb5 (better 39...b3!? 40.Rf1-+) 40.Rg7 Kc4 41.Rb7 Kd3 42.g5 (42.Kg3-+) 42...Kd2 43.g6 Ke3 44.g7 Kd4 (44...Rg8 45.Kh3-+) 45.Rf7 (45.Kg3 Kc3 46.Rc7 c4-+) 45...Rg8 46.Rd7 (46.Rb7 Kc3 47.Rc7 c4-+) 46...Kc3 47.Kh3 (47.Re7-+) 47...b3 48.Kh4 (48.Rd1 b2 49.Kg3 Rg7 50.Kf4 Rg2 51.Ke4 Kc2-+) 48...b2 49.Rb7 (49.Rd1 Rg7 50.Re1 Rg2-+) 49...c4 (49...e3 50.Kg3 Rg7 51.Rg7-+) 50.Kh5 (50.Kg4 Rg7!! 51.Rg7 b1Q-+) 50...e3 51.Kh6 e2 52.Kh7 Rg7!! 53.Kg7 (53.Rg7 b1Q Promotion; 53.Kg7 e1Q Combination) 53...e1Q 54.Rf7 Qe5 55.Kg8 (55.Kh6 b1Q 56.Rf3 Kd4 57.Rd3 cd3 58.g4 d2 59.g5 Qh8) 55...b1Q 56.Rf3 Kb4 57.Rf7 (57.Kf7 Qh7 58.Kf8 Qhg7) 57...Qg6 58.Kf8 Qh8 (58...Qh6 59.Kg8 Qhh8) 59.Ke7 Qc8 (59...Qb8 60.g4 Qgd6) 60.Rf6 Qd8! 61.Ke6 (61.Kd8 Qg8 Double attack (61...Qd3 Decoy)) 61…Qgf6 0-1. brucepeng (1910) - ismetdinler00 (1935), lichess.org, 2020.

6.Nf3 Nc5 7.c4 dc4 8.Bc4 Nd3 9.Bd3 Bd3 10.Qb3 Ne7 (10...Qd7 11.Be5 Bb1 12.Rb1 fe5 13.Ne5-/+) 11.Nc3 (11.Nd4 e4=) 11...Ng6 12.Rc1 Bc5?? (12...c6 13.bc6 bc6 14.Qe6 Ne7 15.Ba3=) 13.Na2?? (better 13.Nd5 e4 14.Rc5+-) 13...Bb6 (13...Be7 14.h4 Nf8 15.Be5 fe5 16.Ne5=+) 14.Rc3 (14.Nb4 Be4=) 14...e4 15.Nd4 (better 15.Nb4!? Ba5 16.Rd3 ed3 17.Nd3=) 15...Bd4-/+ 16.ed4 Nf4 (16...Qd7 17.g3 Qg4 18.Nc1-+) 17.g3=+ Nd5 (17...Ng2 18.Kd1 Qd7=+ (18...Qd4? 19.Rc7 Qd6 20.Qf7 Kd8 21.Qg7+-)) 18.Rd3? (better 18.Rc5!? c6 19.Nc1=) 18...ed3-+ 19.Qd3 (19.0-0 Qd7-/+) 19...0-0 20.Kf1 (20.0-0 Re8-+) 20...Qd7 21.Kg2 Rae8 (21...a6 22.Nc3-+) 22.Nc3 f5 23.Ne2 (better 23.Qf3!? c6 24.Nd5 cd5 25.Rc1-/+) 23...f4 24.Nf4? (24.f3-+) 24...Rf4 25.gf4 (25.h3-+) 25…Nf4 (25...Nf4 26.Kg3 Qh3 27.Kf4 Rf8 28.Ke5 Qh5 29.Ke4 Qf5 30.Ke3 Qf3; 25...Qg4 26.Kf1 Nf4 27.Qc4 Kh8 28.Qg8 Kg8 29.d5 Qd1) 0-1. brucepeng (1965) - guillerodriguezdx (1960), lichess.org, 2020.

4.c4 dc4

5.Qa4 Be6–/+ 6.e4 (6.Na3 Ba3 7.Ba3 a6–/+) 6...Nd7–+ 7.Bc4?? (better is 7.Qc2 Nc5 8.Nf3–+) 7...Nc5 (7...Nb6!? 8.Qc2 Bc4 9.Nc3–+) 8.Qc2 Bc4 9.Qc4 Nd3 10.Ke2 Nb2 11.Qb3 (11.Qc2 Qd4 12.Nf3 Qb4–+) 11...Qd4 12.Nf3 (12.Qd5 Qd5 13.ed5 0-0-0–+) 12...Qe4 13.Qe3 (13.Kf1 Qd3 14.Qd3 Nd3–+) 13…Qc4 (13...Qc4 14.d3 Qb5–+) 0–1. Kaczmarek,Michal – Lawson,Rod, IECC, 1999.

5.e3 c5 6.bc6 (6.Bc4 Nd7=) 6...Nc6 7.Bc4 Nge7 8.Qb3 Na5 (8...Qd7!?=+) 9.Bf7+= Kd7 10.Qe6 (10.Qd3!? Kc7 11.Qb5=) 10...Kc7=+ 11.Na3?? (better 11.Be5 fe5 12.Qe5 Kb6 13.Qb2 Ka6 14.Nc3=) 11...Be6-+ 12.Be6 Nec6 13.Nb5 (13.Rc1 Qd3 14.Nc2 Kd8-+) 13...Kb6 (13...Kb8 14.Rb1-+) 14.a4 Bb4 15.Nf3 Re8 (15...Qd3 16.Nc3 Rad8 17.Rd1-+) 16.Bf5 (16.Ba2 a6 17.Nc3 e4 18.Nd5 Ka7-+) 16...e4 (16...Nb3 17.Rd1 Nc5 18.Bc3-+) 17.Nfd4 Nd4 (17...g6!? 18.Bh3-+) 18.Bd4 Bc5 (18...Ka6 19.0-0 Nb3 20.Rab1 Nd4 21.Nd4-+) 19.Bc3 (19.Bh7 Bd4 20.Nd4 Nc6 21.Rb1 Ka6-+) 19...g6 20.Bg4 f5 21.Be2 Nb3 (better 21...a6 22.Nd4 Ka7-+) 22.Rb1 Qd5 23.a5 (23.Bd1-+) 23…Kc6 0-1. ClayPigeons (2105) - Galerna (2005), Rated Bullet game, lichess.org, 2020.

5.e3 c6 6.Nf3 (better 6.Bc4 cb5 7.Bb5 Bd7 8.Bc4=) 6...cb5-+ 7.a4 ba4 (7...Qa5!?-/+) 8.Bc4 Nc6 9.Qa4 Nge7 (9...Qb6 10.Bc3=+) 10.Bc3 (10.Qb3 Qc7=+) 10...Nd5 (10...Bg4 11.d3-/+) 11.Qb3=+ Nc3 12.Bf7 Ke7 13.Qe6?? (better 13.Nc3 Qd6 14.0-0=) 13...Be6-+ 14.Be6 Ke6 (14...Nb1 15.Bf5 Nd2 16.Nd2-+) 15.dc3 Bc5 (15...Qd3!? 16.Nbd2-+) 16.0-0 Qc7 (16...Qd3 17.Ne1 Qe2 18.c4-+) 17.Nbd2 Rhd8 18.Nc4 Be7 (18...e4 19.Nfd2 Ne5 20.Ne5 Rd2 21.Nc4-+) 19.Nb2 Kf7 20.c4 Na5 (20...e4 21.Ne1-+) 21.Rac1 Nb3 (21...Ba3 22.Rb1-+) 22.Rc3 Nc5 23.Nd1 a5 24.Rc2 a4 (better 24...Nb3 25.Re1-+) 25.Rc1 a3 26.Nc3 a2 (26...Nb3 27.Rb1 Qc4 28.Na2-+) 27.Na2 Ra2 28.Rb1 h6 29.Rbd1 e4 (better 29...Rd1 30.Rd1 Ne4 31.Rf1-+) 30.Rde1 ef3 31.gf3 Rdd2 32.Kg2 Qe5 (32...Rf2 33.Rf2 Rf2 34.Kf2 Qh2 35.Kf1 Nd3 36.c5 Qf2) 33.f4 (33.Rb1 Qe3 34.Rb4 Rf2 35.Rf2 Qf2 36.Kh3 Qf3 37.Kh4 Rh2) 33...Qe4 34.Kg3 Nd3 (34...Qg6 35.Kf3 f5 36.h3 Bh4 37.Re2 Re2 38.Rd1 Rf2) 35.h3 (35.Rc1 Qg6 36.Kh3 f5 37.c5 Qg4) 35…Nf2 (35...Nf2 36.Rg1 Nh1 37.Kh4 f5 38.Rg5 hg5 39.Kh5 Ng3; 35...Qg6 36.Kh2 Rf2 37.Rf2 Rf2 38.Kh1 Qg2) 0-1. ClayPigeons (2135) - doobidoo (2165), Rated Bullet game, lichess.org, 2021.

5.e3 Be6

6.a4 Bb4 7.Qc2=+ Ne7 (7...Qd5 8.e4 Qc5 9.Na3=+) 8.Bc4= Qd6 (8...Bc4 9.Qc4 Qd5 A) 10.Qb4? Qg2 11.Nf3 Qh1 (11...Qf3?! 12.Rg1-/+) 12.Ke2 Qg2-+; B) 10.Qc7?? Nd7-+ (worse 10...Qg2 11.Ke2 Qh1 12.Nf3-+); C) 10.Qg4=) 9.Nf3 (better 9.Be6 Qe6 10.Qc7+=) 9...0-0?? (9...Qc5 10.Bd3=) 10.Be6 (better 10.Be5 Qd7 11.Qb3 Bc4 A) 12.Qb4 Qd3 13.Nc3 A1) 13...fe5? 14.Ne5 (14.Qe7?! Nd7=) 14...Qf5 15.Qc4 (15.Nc4?! Qf2 16.Kd1 Qg2=; 15.Qe7?! Qf2 16.Kd1 Bb3 17.Kc1 a6=) 15...Kh8 16.f4+-; A2) 13...Nd5=+; B) 12.Qc4 Kh8 13.Qb4 (13.Bc7?! Ba5+/-) 13...fe5 14.Ne5+-) 10...Qe6= 11.Qc7 Nd7 12.Qc2 (12.Qb7?? Nc5 13.Qa8 Ra8-+) 12...Rac8 13.Qd1 (better 13.Bc3!?=) 13...Nc5=+ 14.0-0 Nd3 (better 14...Nb3!? 15.Bc3 Na1 16.Bb4 Rfe8-/+) 15.Bc3= Nd5 16.Bb4 N5b4 17.Nc3 Rfd8 18.Rb1 g5 (18...Na2 19.Qc2 Nc3 20.dc3=) 19.Qb3 (19.e4 Rc4+=) 19...Qb3= 20.Rb3 h5 21.Rfb1 Nd5 22.Ne4 Nc5 (22...Nc1 23.Ra3+=) 23.Nc5 Rc5 24.Kf1 (24.d4 Rcc8+=) 24...Kf7 (24...Rc2!?=) 25.d4+= ed4 26.Nd4 (worse 26.ed4 Rc4=+) 26...Rdc8 27.Ke2 (better 27.Nf5 R8c7 28.Ra1+=) 27...Nc3=+ 28.Rc3 Rc3 29.Nf5 (29.b6 a6 30.Nf5 Rc2 31.Ke1 R8c6-/+) 29...Ke6 (29...Rc2 30.Kf3 Rd2 31.b6-/+) 30.Ng7=+ Ke5 31.Nh5 Rc2 32.Kf3 Ra2 33.Ng7 (33.Rb4!? Rcc2 34.Re4 Kd6 35.Rd4 Ke7 36.Ke4 Rf2 37.Ng7-/+) 33...Rcc2-+ 34.Rf1 Ra4 35.Ne8 (35.b6 a5-+) 35...g4 (35...Rb4!? 36.g4-+) 36.Kg3 Raa2 37.Ng7 (37.h4 f5-+) 37...f5 38.Nh5 Rf2?? (better 38...Rab2-+) 39.Nf4?? (better 39.Rf2 Rf2 40.Kf2+-) 39…Rf1-+ 0-1. ClayPigeons (2135) - gothmog54 (2255), Rated Bullet game, lichess.org, 2021.

6.a4 Bc5 7.Na3 (7.Qc2 a6=+) 7...Qe7 (7...Ba3!? 8.Ra3 a6-/+) 8.Bc4= Ba3 (8...Bc4 9.Nc4 a6 10.Ne2=) 9.Ba3+= Qf7 10.Bd3 Nd7 11.Nf3 0-0-0 12.0-0 Bd5 (12...Kb8 13.a5 Nc5 14.Bc5 Rd3 15.b6 cb6 16.ab6+/-) 13.Qc2 Re8? (13...Bf3 14.gf3 Nh6 15.Rfc1+=) 14.Be2 (14.Rfc1 Nf8 15.Bf5 Kb8+-) 14...g5? (better 14...Bb3!? 15.Qc3 Kb8+/-) 15.Rfc1+- Nb8 (15...c6 16.bc6 Bc6 17.Rab1+-) 16.a5 (16.Ng5 fg5 17.Bh5 Qg7 18.Be8 Nf6+-) 16...Nh6 (16...g4 17.Nh4 Nh6 18.Bd6+-) 17.d3 (17.b6 ab6 18.ab6 c6+-) 17...g4 (17...a6 18.e4 Bb3 19.Qc3+-) 18.Nd2 f5 (18...Rd8 19.Ne4 Be4 20.de4+-) 19.a6! b6 (19...ba6 20.e4 Combination) 20.Qc3 (20.e4 Be6 21.Bd6 Re7+-) 20...Rhg8 (20...Qd7 21.e4 Be6 22.Qe5+-) 21.Rc2 (21.e4 Be6 22.Bd6 c5 23.bc6 fe4 24.de4 g3 25.fg3 Bd5+-) 21...f4 (better 21...Kd8!?+/-) 22.e4+- Ba8 (22...f3 23.Bf1 Be6 24.Bd6 (24.Qe5?! Bb3 25.Qc7 Qc7 26.Rc7 Kc7 27.Nb3 Re5+/-) 24...fg2 25.Qc7 Qc7 26.Rc7 Kd8 27.Ra7 gf1Q 28.Kf1 Na6 29.R1a6+- (worse 29.R7a6 Nf7 30.Bb4 Bc8 31.Rb6 Rg6+-)) 23.Rac1 (23.Nc4 Qg7 24.Nd6 Kd8 25.Ne8 Re8+-) 23...Rg7 (23...Bc6 24.bc6 f3 25.Bd1+-) 24.Nc4 f3 (24...Qh5 25.Nd6 Kd8 26.Ne8 Qe8 27.Bd6+-) 25.Bf1 (25.Nd6 Kd8 26.Nf7 Rf7+-) 25...fg2?? (25...Qf6 26.Nd6 Kd8 27.Qc7 Rc7 28.Rc7+-) 26.Bg2 (better 26.Nd6 Kd8 27.Nf7 Rf7 28.Bg2 Rd7+-) 26...Rf8?? (26...Qf6 27.Nd6 Kd8 28.Ne8 Ke8+-) 27.Ne5 Qe7 28.Be7 Re7 29.Nc4 (29.Qb4 Rff7 30.Nf7 Rf7 31.Rc7 Rc7 32.Qf8 Kd7 33.Qg7 Ke6 34.Rc7 Nd7 35.Qd7 Ke5 36.Qe7 Kd4 37.Qd6 Bd5 38.Qd5) 29...Rfe8 (29...Kd8 30.Qb4 Nf7 31.Nb6+-) 30.Ne3 (30.Nd6 Kd7 31.Ne8 c5 32.bc6 Bc6 33.Qd4 Ke8 34.Rc6 Nc6 35.Rc6 Ng8 36.Qd5 Re4 37.Rc8 Ke7 38.Rc7 Kf6 39.Rf7 Kg6 40.Be4 Kh6 41.Rh7) 30...g3 (30...c5 31.bc6! Rf7 32.Nc4 Nc6 33.Nd6 Kd7 34.e5 Re5 35.Nf7 Nf7 36.Bc6 Bc6 37.Qc6 Ke7 38.Qb7 Kf6 39.Rc6 Kg7 40.R1c4 h6 41.Rf4 Re1 42.Kg2 Rg1 43.Kg1 h5 44.Qf7 Kh8 45.Rc8) 31.hg3 (31.Bh3 Ng4 32.Bg4 Kd8 33.Qd4 Rd7 34.Bd7 gf2 35.Kf1 Re7 36.Rc7 Re5 37.Qd6 Bb7 38.Bc6 Nd7 39.Qd7) 31...Nf7 32.f4 (32.Bh3 Kd8 33.Qd4 Rd7 34.Qf6 Ree7 35.Rc7 Bc6 36.Bd7 Nd6 37.Nd5 Bd5 38.Qd6 Bb7 39.Rc8 Bc8 40.Rc8) 32...Nd6 33.Nd5 (better 33.Bh3 Kd8 34.Qd4 Bc6 35.Rc6 Nc6 36.Rc6 Re6+-) 33...Nb5 (33...Bd5 34.ed5 c5 35.Qf6+-) 34.Ne7 (34.Ne7 Kd8 35.Nc6 Bc6 36.Qf6 Re7 37.Rc6 Nc6 38.Rc6+-) 1-0. ClayPigeons (2185) - jufinski (2085), Rated Bullet game, lichess.org, 2020.

6.Qc2 Qd5 7.Nc3 Qc5 8.Nf3 Be7 9.d4 ed4 (9...cd3 10.Bd3 c6 11.Bh7 cb5 12.Bg6 Kf8 13.Rd1=) 10.Nd4 =.

6.Qc2 Qd5 7.Nc3 Qd6 8.d3 Bf5 9.e4 cd3 10.Bd3 Be6 11.Nf3 Nd7 12.Rd1 Qb6 13.0-0 Bb4 (better is 13...Nc5!?=) 14.Na4 +/–.

6.Qc2 Bd6 7.Bc4 Qd7 8.Ne2 Ne7 9.Qb3 Bc4 (9...Kf7 10.Na3 a6 11.Rc1=) 10.Qc4+= c6 11.a4 Ng6 (11...Nd5 12.0-0+=) 12.d4 (12.0-0 Qf7 13.Qd3 Be7+=) 12...Qf7 (12...ed4!? 13.Bd4 a6=) 13.Nd2+= 0-0 14.0-0 cb5 15.ab5 Nd7 16.Qf7 Kf7 17.Ne4 Be7 18.Rfc1 Rfc8 19.N2g3 Rc1 (19...a6 20.Rc8 Rc8 21.Nf5+=) 20.Rc1+/- Nb6 21.de5 Ne5 22.Be5 fe5 23.Rc7 Ke6 24.Rb7 Rc8 (better 24...Nd5!?+=) 25.Ra7+- Rc1 26.Nf1 Nc4 (26...Rc2 27.Rb7 Nd5 28.h3+-) 27.Rc7 Kd5? (27...Ba3+-) 28.Ned2 (28.Re7?! Ke4 29.Rg7 Nd2 30.f3 Kf5+-) 28...Bc5 (28...Bd6 29.e4 Kd4+-) 29.e4 Kd6 (29...Kd4 30.Nb3 Kc3 31.Nc1+-) 30.Rc6 (30.Rc6 Kd7 31.Rc5 Nd2 32.Rc1+-) 1-0. onur604 (2320) - Complicated_Game (2190), Casual Rapid game, lichess.org, 2021.

6.Qc2 Nd7 7.Bc4 Bc4 8.Qc4 Bd6 9.Nf3 Nh6 10.Nc3 Nf7 11.0-0 0-0 12.a4 (12.d4 a6=) 12...Re8 (12...Rc8 13.Rfd1=) 13.d4 (13.Rfc1 a6=) 13...ed4+= 14.Nd4 Nde5 15.Qa2 Qd7 16.Rfd1 Qg4 17.h3 Qg6 18.Nd5 (18.Qd5 Rab8+=) 18...Kh8 (18...c5 19.Nf4 Qe4 20.Rac1+=) 19.Nf4 Qh6 (19...Qe4 20.Rac1+=) 20.Qb3 Rac8 21.Rac1 g5? (better 21...Bf8!?+/-) 22.Nf5+- Qf8 23.Nh5 (23.Nd6?! Nd6 24.Nd3 c6+-) 23...Nh6 24.Nd6 cd6 25.f4 gf4 26.ef4 (26.Nf4?! Qe7+/-) 26...Nd7 27.Rc8 Rc8 28.Qe6 Rc2 (28...Qf7 29.Bf6 Kg8 30.Qd6+-) 29.Rd6 (29.Qd7 Rb2 30.Rc1 Qg8+-) 29...Rb2 30.Rd7 (worse 30.Qd7 Ng8 31.Qb7 a5+-) 30...Ng8 31.Rg7 Rb1 (31...Qg7 32.Ng7 Kg7 33.Qd7 Kh8 34.Qb7+-) 32.Kh2 Qg7 33.Ng7 Kg7 34.Qe4 Ra1 (34...Rd1 35.Qb7 Kf8 36.Qh7+-) 35.Qb7 Kg6 36.f5! Kf5 37.Qd5 Kg6 38.Qg8 (38.Qg8 Kh6 39.Qf7+-) 1-0. pvanr (2630) - Diadoco (2190), ChessWorld.net, 2021.

6.a4 a6

7.Na3 Ba3 8.Ba3 Ne7 (8...ab5 9.ab5 c6 10.Qb1-/+) 9.Qc2 ab5 10.ab5 Qd5 11.Nf3 (11.d3 Qb5 12.dc4 Qa5 13.Qd2 Nbc6-+) 11...Qb5-+ 12.Be2 (12.Rb1 Qc6 13.Be7 Ke7-+) 12...Nbc6 13.0-0 0-0?? (better 13...Qb3 14.Qc1 e4-+) 14.Rfb1= Qd5 15.e4 Qd7 16.Bc4 (better 16.Rb7 Na5 17.Rb2=) 16...b6 (16...Rfb8 17.Be6 Qe6 18.Bc5=+) 17.Rc1 (17.Bb5 Ra3 18.Ra3 Qd6+/-) 17...Kh8?? (17...Bc4 18.Qc4 Kh8 19.Be7 Ne7 20.d4 Ra1 21.Ra1=+) 18.Be7?? (better 18.Bb5 Nd4 19.Bd7 Nc2 20.Rc2 Bd7 21.Rc7=) 18...Ne7 (18...Qe7 19.Rab1 Nd8 20.Be2=+) 19.Ra8 (19.Be6 Qe6 20.Qc7 Ra1 21.Ra1 Rc8=) 19...Ra8=+ 20.Be6 Qe6 21.Qc7?? (21.d4=+) 21...Ng6 (better 21...Rc8-+) 22.d4 (22.Qb7 Rg8 23.Rb1 Qc4=) 22...ed4 (22...Nf4 23.Qc2 Qg4 24.g3=+) 23.Nd4 (better 23.Qb7!? Rd8 24.Nd4=) 23...Qe4=+ 24.Nc6?? (24.Qd7 Rg8 25.Ne6 Ne5-/+) 24...Qf4 (better 24...Nf4 25.Qf4 Qf4-+) 25.Rd1?? (better 25.Qf4 Nf4 26.Rb1 Ne2 27.Kf1-/+) 25…Qc7-+ 0-1. ClayPigeons (2195) - SinawUlokAtakis (2295), Rated Bullet game, lichess.org, 2020.

7.Na3 ab5 8.ab5 Ba3 9.Ra3 Ra3 10.Ba3-/+.

7.Na3 ab5 8.ab5 Ba3 9.Ba3 c6 10.bc6 Nc6 11.Qb1-/+.

7.Na3 ab5 8.ab5 Ba3 9.Ba3 Ne7 10.Nf3 (better 10.d3-/+) 10...0-0 (10...c6 11.Qb1-/+) 11.Be2 (11.Qc1 e4 12.Nd4 Bd5+=) 11...Nd7 (11...c6 12.Qb1-/+) 12.0-0 Nb6 (12...e4 13.Nd4 Bd5 14.f3=) 13.Qc2 Re8 14.Rfd1 (14.d3!? Bf5 15.e4 cd3 16.Bd3=) 14...Qd7 15.d4 cd3 (better 15...Qb5!? 16.de5 fe5=+) 16.Bd3+= Ned5 17.Bh7 Kh8 18.Bg6 Bf7 19.Nh4 (19.Nh4 e4 20.Be4 Qb5 21.Bg6 Bg6 22.Qg6+- (22.Ng6?! Kg8+=)) 1-0. ClayPigeons (2130) - willipsg (2160), Rated Bullet game, lichess.org, 2020.

7.Na3 ab5 8.ab5 Nh6 9.Qc2 Can c4 get defended? (9.Bc4 Bd5 10.Bd5 Qd5=+) 9...Be7 (9...Ba3!? 10.Ba3 Qd5-/+) 10.Bc4= Qd7 (10...Bc4 11.Qc4 Nd7 12.Nf3=) 11.Qb3 (better 11.Be6!? Qe6 12.Qc7+/-) 11...Bc4=+ 12.Qc4 Nf7 13.Nf3 0-0 (13...Nd6 14.Qb3=+) 14.d4= e4 15.Nd2 Kh8 (better 15...f5!?=) 16.Ne4+/- f5 (16...Qg4 17.Ng3+/-) 17.Nc5+- Bc5 18.dc5 f4 (18...Qe7 19.0-0+-) 19.Qc3 (19.Qc3 Ng5 20.0-0+=) 1-0. ClayPigeons (2015) - Kikagol (2160), Rated Bullet game, lichess.org, 2020.

7.Qc2 ab5 8.ab5 Ra1 9.Ba1 Qd5 10.Nc3 Qc5 11.Bb2 Nd7 12.Nf3 Nb6 (12...Qd6 13.d4 cd3 14.Bd3-/+) 13.Be2 (13.d4 cd3 14.Bd3 Nd5=+) 13...Bd6 (13...Qb4 14.0-0-/+) 14.0-0=+ Ne7 15.Ne4 (better 15.Ra1!? Ned5 16.Ba3 Qa3 17.Ra3 Ba3 18.Nd5 Bd5 19.d3 cd3 20.Bd3+/- (20.Qd3?! Bd6=)) 15...Qb5-/+ 16.Nd6 (16.d4 cd3! 17.Bd3 Bc4-/+) 16...cd6-+ 17.Ba3 Kf7 (better 17...Qc6!?-+) 18.Bd6=+ Rd8 (18...Qb3 19.Qe4 Bd5 20.Ne5 fe5 21.Qe5 Re8 22.Be7 Re7 23.Qf5 Ke8=) 19.Ba3?? (19.Be7 Ke7 20.Qh7 Qe8+=) 19...Qc6?? (19...Qb3 20.Qc1-/+) 20.Rc1 (20.Be7 Ke7 21.Qh7 Rg8+=) 20...Rc8?? (20...Nf5 21.Bb2 Kg8 22.Ra1-/+) 21.Qc3 (better 21.Be7 Ke7 22.Qh7+=) 21...Nbd5 (21...Ned5 22.Qc2 Ra8 23.Bb2-/+) 22.Qa1 (22.Qc2 h6-/+) 22...b5 23.Bb2 (better 23.Be7 Ne7 24.Qb1-/+) 23...Nb6?? (better 23...Kg8-+) 24.Be5= fe5?? (better 24...Kg8 25.Bc3 Qd7=) 25.Ne5+- Ke8 26.Nc6 Nc6 (26...Rc6 27.Qg7 Nbd5 28.Qh7+-) 27.Bf3 Ne7 28.Qg7 Kd7 (28...Nbd5 29.d3+-) 29.Qh7 (29.Rb1 Nbd5 30.Rb5 Nc7+-) 29...b4 (29...Na4 30.Qg7 Kd6 31.Qd4 Nd5 32.e4+-) 30.Qh4 c3 (30...Nf5 31.Qe4 Nd6 32.Qh7 Kd8 33.Qg6+-) 31.Qb4 Nbd5 (31...Ned5 32.Qb5 Kd8 33.e4+-) 32.Qa4 Kd8 33.dc3 Nc3 34.Qa5 Ke8 35.Rc3 Rc3 36.Qc3 Kf7 37.g3 1-0. ClayPigeons (2090) - JAVIER80760 (2030), Rated Bullet game, lichess.org, 2020.

7.Nc3 ab5 8.ab5 Ra1 9.Qa1 Bb4 10.Qa4 (10.Qa2 Be7=) 10...c5 (10...Bc3 11.dc3 Nd7 12.Ba3-/+) 11.bc6=+ Nc6 12.Nf3 (12.Qb5 Qa5 13.Bc4 Qb5 14.Bb5 Nge7=+) 12...Nge7 (12...Qa5!? 13.Qc2 b5-/+) 13.Qb5 0-0 (13...Bc3 14.dc3 Qd5 15.Qd5 Bd5-/+ (15...Nd5?! 16.Bc4 Kf7 17.Nd2=+)) 14.Bc4= Bc4 15.Qc4 Kh8 16.0-0 Qd7 17.d4 ed4 18.ed4 Rd8 19.Ne4 Qd5 20.Qc2 (20.Qd5 Nd5 21.Ra1 Kg8=) 20...Nf5 The pressure on the isolated pawn grows 21.Rd1 Bf8 (21...Re8 22.Ng3 Ng3 23.fg3=+) 22.Ng3 (22.Qb1!?=) 22...b5?? (better 22...Ng3 23.fg3 Bc5=+) 23.Nf5+- 1-0. ClayPigeons (2085) - adwilhans (2190), Rated Bullet game, lichess.org, 2019.

6.a4 c6

7.Na3 Ba3 8.Ba3 cb5 9.ab5 Qb6 10.Qa4 Qc7?? (10...f5=) 11.Nf3 (better 11.b6 Qc6 12.Qa7 Ra7 13.ba7+-) 11...Nd7=+ 12.Be2 (12.d4 Bd5=+) 12...Nb6-/+ 13.Qb4 Ne7 14.Rc1 (14.Qc5 Qc5 15.Bc5 Nd7-/+) 14...Ned5 15.Qb1 Rc8 16.0-0 Kf7 (16...Qd7 17.d4 Bf5 18.Qa2=+) 17.Rfd1 (better 17.d4 ed4 18.Nd4=+) 17...Rhd8 (17...c3 18.Qe4-/+) 18.Ne1?? (better 18.Qh7 Bg4 19.Ng5 fg5 20.Bg4+/-) 18...Kg8-/+ 19.Bb4 (19.d4 f5-/+) 19...Nb4-+ 20.Qb4 Rd7 (20...Qc5 21.Qb1-+) 21.d3 Nd5 (21...c3 22.Nc2-/+) 22.Qa3 (22.Qc4 Nf4 23.Qc7 Ne2 (23...Rcc7? 24.ef4 Rc1 25.Rc1+-; 23...Rdc7?! 24.Rc7 Ne2 25.Kf1 Ng3 26.hg3 Rc7 27.Ra1=+) 24.Kf1 Ng3 25.hg3 Rdc7 26.Rc7 Rc7=+) 22...c3-/+ 23.Qa7 c2 (23...Qc5 24.Qc5 Rc5 25.d4 ed4 26.Rd4=+) 24.Rd2 (better 24.Rc2!? Nc3 25.Ra1+=) 24...Nb4=+ 25.Qa3 Qc5 26.d4 (26.Nc2 Rdc7 27.Bd1-/+) 26...Qc3?? (better 26...ed4 27.e4 d3 28.Bd3 Nd3 29.Rd3 Qa3 30.Ra3 Rd1-+) 27.Qc3= Rc3 28.Nc2 (better 28.Nd3!? Rc4 29.Nb4 (29.de5? fe5 30.h3 Rc8-+) 29...Rb4 30.Rcc2 ed4 31.Rd4 Rbd4 32.ed4 Rd4 33.Rc7+=) 28...Rdc7=+ 29.Bc4?? (better 29.Bd1=+) 29...Nc2 (better 29...R7c4 30.de5 fe5 31.Rd8 Kf7-+) 30.Be6+/- Kf8 31.Rdc2?? (better 31.Rcd1 Na3 32.de5 fe5 33.Rd5+/-) 31...Rc2-/+ 32.Rd1 (32.Rc2!? Rc2 33.Kf1-+) 32...Rc1 (better 32...Rd2! 33.Rb1 ed4 34.ed4 Rd4-+) 33.Kf1 (33.Kf1 Rd1 34.Ke2-+). ClayPigeons (2105) - Silviar2 (2055), Rated Bullet game, lichess.org, 2020.

7.Na3 cb5 8.ab5 Ba3 9.Ba3 Ne7 (9...Qd5 10.Rc1 Qb5 11.Bc4 Bc4 12.Qg4-/+) 10.Qc2 (10.Rc1 Qa5 11.Be7 Ke7 12.Bc4 Bc4 13.Rc4 Qb5=+) 10...Qc7 (10...Qd5 11.Be7 Ke7 12.b6-/+) 11.Rc1 0-0 (11...a6 12.ba6 Na6 (12...ba6?! 13.Bc4 Bc4 14.Qc4 Qc4 15.Rc4=; 12...Ra6?! 13.Be7 Ke7 14.Nf3-/+) 13.Bc4 Bc4 14.Qc4 Qc4 15.Rc4 Nd5-/+) 12.Bc4= Bc4 13.Be7 (13.Qc4 Qc4 14.Rc4 Rc8=) 13...Qe7 (13...Rc8 14.Qe4=+) 14.Qc4= Kh8 (14...Qf7 15.Qf7 Rf7 16.d4=) 15.Nf3 (15.Qc7 Qc7 16.Rc7 b6=) 15...Nd7 16.0-0 Nb6 (16...e4 17.Nd4=) 17.Qc7 (17.Qe4 Rfd8=) 17...Rfe8 18.Nh4 (18.d4 e4 19.Nd2 Qb4+=) 18...Rac8 (18...Nd5 19.Qe7 Re7 20.d4=) 19.Qe7 Re7 20.Ra1 Rc5 21.Nf5 Rec7 (21...Rd7 22.Ra7 g6 23.d4=) 22.Rfb1 (22.f4 ef4 23.Rf4 g5+=) 22...h6 (22...Rd5 23.d4 g6 24.Ng3 ed4 25.ed4 Rd4 26.Ra7=) 23.g4 (better 23.h3+=) 23...Nc4? (23...g6 24.d4 (24.Nh6? Kg7-+) 24...Rd5 25.Nh4+= (25.Nh6? ed4 26.e4 Re5-+)) 24.Ra7 (better 24.d4 ed4 25.Nd4+/-) 24...Nd2= 25.Rd1 (better 25.Rb4 Kh7 26.h4=) 25...Nf3?? (better 25...Rd7 26.Rd2 Rd2 27.Rb7 Rcc2 28.Ng7 Rf2-+) 26.Kg2+- e4 27.Ra8?? (better 27.b6 Rc8 28.Rb7+-) 27...Kh7+/- 28.Rdd8 (28.b6 R7c6 29.Nd6+=) 28...Rb5=+ 29.h4 Kg6 30.h5 (better 30.Nd6 Rb1 31.Ne4 Nh4 32.Kg3=+) 30...Kf7?? (better 30...Kg5!? 31.Kg3 Rf5 32.gf5 Nh4=+) 31.Rf8 (better 31.Nd6 Ke6 32.Nb5+-) 31...Ke6+= 32.Rae8 (32.Rfe8!? Kd5 33.Rad8 Kc5 34.Re4+/-) 32...Kd5= 33.Rd8 Kc6 34.Rfe8 (34.Rc8 Rb1=) 34...Kb6 (better 34...Rd5!?=+) 35.Re6+= Ka7 36.Ne7?? (better 36.Nd6 Rb1 37.Re4+=) 36...Nh4?? (better 36...Ng5 37.Rdd6 Rb2-+) 37.Kg3+- Nf3 38.Nc8 (better 38.Re4 Ne5 39.Ra4 Kb6 40.Nd5 Rd5 41.Rd5+-) 38...Kb8?? (better 38...Rc8 39.Rc8 Ng5+-) 39.Nb6 Ka7 (39...Rc8 40.Rc8 Ka7 41.Ra8) 40.Ra8 1-0. ClayPigeons (2105) - lakersin4 (2130), Rated Bullet game, lichess.org, 2020.

7.Qc2 cb5 8.ab5 Qc7-/+.

7.Qc2 cb5 8.ab5 Qc8-/+.

7.Nc3 cb5 8.ab5 Nd7 9.Ba3 (9.d4 cd3! 10.Bd3 Bb4-/+) 9...Ba3-+ 10.Ra3 Nb6 (10...Nc5 11.Qc2-/+) 11.Nf3 Ne7 12.Be2 0-0 13.0-0 h6 (13...Qd6 14.Qa1-/+) 14.Qa1 Ned5 15.Nd5 (15.Ra7 Qd7 16.Nd5 Bd5=+) 15...Bd5 (15...Qd5 16.Rb1-/+) 16.Ra7=+ Qd7 17.Rc1 (better 17.e4!? Be4 18.Bc4 Bd5 19.Bd5 Qd5 20.d4 ed4 21.Ra8 Ra8 22.Qd4 Qb5 23.Re1=+) 17...Qb5-+ 18.Rb1?? (better 18.Ra3-+) 18...Qc6 (better 18...Ra7 19.Qb2 Qb2 20.Rb2 Ra1 21.Bf1 Na4-+) 19.Qa5?? (better 19.Rb6 Qb6 20.Ra8 Ra8 21.Qa8 Kh7 22.Qa1+-) 19...Ra7-/+ 20.Qb6?? (better 20.Qa7 Nd7 21.Qa5-/+) 20...Qb6-+ 21.Rb5 (21.Rb6 Ra1 22.Bf1-+) 21...Qb5 (better 21...Ra1 22.Bf1 Qb5 23.h3-+) 22.h3 Ra1 23.Kh2 Bf3 24.Bf3 Qb2 (24...e4 25.Be2 Rd8 26.h4 Rd2 27.Bf1 Rf1 28.Kg3 Qe5 29.f4 ef3 30.Kh3 h5 31.gf3 Rf3) 25.d4 Kh8 26.Bd5 (26.Kg3 ed4 27.e4 c3 28.e5 c2 29.Be4 c1Q 30.h4 Qf2 31.Kg4 Qcf4 32.Kh5 Q4h4 33.Kg6 Qg5) 26...Qf2 27.h4 (27.de5 Qg1 28.Kg3 Qe3 29.Kh2 Qf4 30.g3 Qf2 31.Bg2 Qg1) 27…Qh4 0-1. ClayPigeons (2100) - Mics28 (2145), Rated Bullet game, lichess.org, 2020.

6.a4 Nd7

7.Na3 Ba3 8.Ba3 Ne7 9.Qc2 Nb6 (9...a6 10.Bc4 Bc4 11.Qc4=+) 10.Rc1 (10.a5 Nbc8 11.Bc4 Bc4 12.Qc4 a6=) 10...0-0 (10...a5 11.d3=) 11.Be2 (11.a5 Nbc8 12.Bc4 Bc4 13.Qc4 Rf7 14.Qc7 Qd5+=) 11...Re8 (11...a6 12.a5 Nbd5 13.Qc4 ab5 14.Qb5=+) 12.Bf3 (better 12.a5!? Nbd5 13.Bc4=) 12...Rb8 13.Ne2 Qd7 14.Nc3 Red8 (14...c6 15.Be7 Re7 16.bc6 bc6 17.Rb1-/+) 15.Ne4=+ Bf5 (15...Bd5 16.Nc5 Qe8 17.Bd5 Ned5 18.a5=) 16.Qd1 (16.a5 Be4 17.Be4 Nbd5 18.Qc4 Kh8+=) 16...Qd3 (16...c6!? 17.Nc5 Qc7=+) 17.Rc3+= Be4?? (better 17...Qd7 18.Nc5 Qe8 19.Nb7 Ned5 20.Bd5 Nd5 21.Nd8 Nc3=+) 18.Rd3+- Bd3 (18...Rd3 19.Be7 Bf3 20.Qf3 Re8+-) 19.Be2 (better 19.Be7 Re8 20.Bc5+-) 19...Be2 (better 19...Nf5=) 20.Qe2+/- Rd3? (better 20...Ng6 21.a5 Nd5+-) 21.Be7+- Na4? (21...Re8 22.a5 Nd5 23.Bc5+-) 22.0-0 (better 22.Qg4 Kh8 23.Qc4 Rd7 24.Qa4 Re7 25.Qa7 Ree8+-) 22...Re8 (22...Nb6 23.Ra1+-) 23.Bb4 (23.Qg4 Nb6 24.Bf6 g6+-) 23...Red8 (23...Nb6 24.Ra1+-) 24.Rc1 (24.f4 ef4 25.ef4 Nb6+-) 24...Nb6 25.Ba5 Kf7 (25...Kh8 26.Ra1+-) 26.h3 g6 (26...Kf8 27.Qg4 c6 28.bc6 bc6 29.Qe6+-) 27.Bb6 cb6 28.Rc4 R8d7 (28...Ke6 29.Rc7 h5 30.Rb7+-) 29.Rc8 (29.Rc7 Kf8+-) 29...Rd2 (29...a5+-) 30.Qc4 Kg7 (30...Ke7 31.Qg8 Rd8 32.Rd8 Rd8 33.Qh7 Ke6 34.Qg6 Rd7+-) 31.Rg8 Kh6 32.Qh4 1-0. ClayPigeons (2090) - Aparcana (2095), Rated Bullet game, lichess.org, 2020.

7.Na3 a6 8.Bc4? (8.Nc4 Bd5=+) 8...Bc4 (better 8...Ba3 9.Be6 Bb2-+) 9.Nc4=+ ab5 10.ab5 Ra1 11.Qa1 (11.Ba1 Nc5 12.d4 Qd5 13.Ne5 Nb3= (worse 13...Qg2 14.dc5 fe5 15.Qh5 Kd8 16.Qf3 Qf3 17.Nf3+/-)) 11...Bb4 (11...Nc5 12.d4 Nd3 13.Kf1=+) 12.Nf3 Ne7 (12...e4 13.Nd4 Nc5 14.0-0=) 13.0-0 0-0 14.d4 (14.Qb1 Nd5+=) 14...e4 15.Nfd2 f5 16.Qa4 Nd5 Black prepares f4 17.Nb3 (17.Ba3 Ba3 18.Qa3 N7f6=) 17...f4 (17...Qg5 18.Qa7 f4 19.Qb7 fe3 20.Bc1 ef2 21.Rf2-+) 18.Ba3 (18.ef4!? Rf4 19.Qa7=) 18...Ba3-/+ 19.Na3? (19.Qa3 Qg5 20.Nc5 f3-/+) 19...f3 (19...fe3!? 20.fe3 Rf1 21.Kf1 Ne3 22.Ke2-+) 20.Qc4 Qg5 21.g3 N7f6 (21...N7b6 22.Qc1 Qg4-+) 22.Rb1 (22.Ra1!?=) 22...Qg4 23.Nc5 b6 24.Na6 Qh5 (24...Ra8 A) 25.Nc7?? Qh3 (25...Ra3? 26.Nd5 Kf7 27.Nb6 Qe6 28.Qe6 Ke6 29.Nc4+-) 26.Qf1 Qf1 (26...Ra3 27.Qh3 Nc7 28.Qc8 Nce8 29.Qe6 Kf8 30.Qb6+-) 27.Kf1 Ra3 28.Nd5 Nd5-+; B) 25.Nc2-/+) 25.Rc1 (25.Ra1 Kh8 26.Nc2 Nc3-/+) 25...Ng4 (25...Rf7 26.Ra1-/+) 26.h4=+ Kh8 27.Nc7 (better 27.Nc2=+) 27...Nge3-+ 28.Qd5?? (28.Qb3 Qg4 29.Nd5 Nd5 30.Nc2-+) 28...Nd5 (28...Qd5?! 29.Nd5 Nd5 30.Nc4=) 29.Ne6 (29.Rc2 Nc7 30.Rc7 Qh6-+) 29...Qf5 30.Nf8 Qh3 31.Nc4 (31.Ng6 hg6 32.Rc8 Kh7 33.Rh8 Kh8 34.Nc4 Qg2) 31…Qg2 0-1. ClayPigeons (2190) - fcvomond (2150), Rated Blitz game, lichess.org, 2020.

7.Na3 Nb6 8.Nf3 (8.a5 Ba3 9.Ra3 Nc8=+) 8...Nh6 (8...Qd5 9.Rc1 c3 10.Rc3=+) 9.Rc1 c4 seems the pivot of the position (9.a5!? c3 10.Bc3= (10.dc3? Qd1 11.Kd1 Na4-+)) 9...Ba3-/+ 10.Ba3 Qd7 (10...a6 11.Bc5 ab5 12.ab5-/+) 11.Qc2 (11.a5 Nc8 12.Bc4 Bc4 13.Rc4 a6=) 11...a5 (better 11...a6!? 12.Bc5 ab5 13.Bb6 Ra4 14.Bc7 Qc7-+) 12.Be2 (12.d4 cd3 13.Bd3 Rd8=) 12...0-0-0 (12...Bf5 13.e4 Bg4 14.Bc4 Bf3 15.gf3 Nc4 16.Qc4=) 13.0-0 (13.Bc5 Kb8+=) 13...e4 (better 13...Bf5!? 14.e4 Bg4=) 14.Nd4+= Bf7 (14...Nf5 15.Bc5 (15.Qe4 Nd4 16.ed4 Rhe8-/+; 15.Ne6?! Qe6 16.Bc5 Nd6+=) 15...Nd4 16.Bd4+/-) 15.Rfd1 (15.Bc5 Rhe8+/-) 15...Nf5 16.Nf5 (16.Bg4 Be6 17.Ne6 Qe6+=) 16...Qf5= 17.f3 (17.Bb2=) 17...Bg6 (17...Rhe8 18.Bb2 Qc5 19.fe4=) 18.fe4 (18.Bc4!? Kb8 19.Bf7+/-) 18...Qe4= 19.Qa2 (19.Qc3 Kd7 20.h3=) 19...Nd7 (19...Qd5 20.Bf3 Qg5 21.Qa1-/+) 20.Bf3 (better 20.Rc4 Bf7 21.Rc7 Kc7 22.Qf7+/-) 20...Qd3?? (better 20...Qe6 21.Rc4 Kb8=+) 21.Rc4?? (better 21.Rc3 Ne5 22.Rd3 Nf3 23.gf3 Bd3 24.Qb2+-) 21...Nb6?? (21...Bf7 22.Rd4 Qd4 23.Qf7 Ne5 24.Qe6 Qd7 25.Bb7 Kb7 26.Qa6 Kb8+/-) 22.Rc3+/- Qd5?? (22...Qd7 23.Rdc1 Kb8+/- (23...Na4?? 24.Rc7 Qc7 25.Rc7 Kc7 26.Qc4 Kb6 27.d4+-)) 23.Bd5+- Rd5 (23...Nd5 24.Rc5 Rd7 25.Rdc1+-) 24.Rdc1 (24.Bc5!? Rc5 25.Rc5 Kb8+-) 24...Rd7 25.d4 (25.Qe6 Nd5 26.Rc7 Nc7+-) 25...Re8 26.Qc2 (26.Qd2 Kd8+-) 26...Na8?? (better 26...Bc2 27.R3c2 Re3-+ (worse 27...Na4 28.Kf2-/+)) 27.Qf2+- Rde7 (27...Nb6 28.Qg3 Nd5 29.Rc5 Re3 30.Rc7 Rc7 31.Rc7 Nc7 32.Qe3+-) 28.Qg3 (better 28.Be7 Re7 29.Qg3 Rd7+-) 28...Kb8 (28...Rd7 29.Bd6 b6 30.Bc7+-) 29.b6 (29.Be7 Re7 30.Rc7 Nc7+-) 29...Nb6 (29...Rd7 30.Rc5 Be4 31.bc7 Kc8 32.Ra5+-) 30.Rc7 (better 30.Be7 Re7 31.Rc7 Rc7 32.Qc7 Ka7+-) 30...Ka7 (30...Re3 31.Qd6 R3e6+-) 31.Re7 Re7 32.Bc5 (32.Be7 Bd3 33.Bc5 Be2 34.Qd6 Bg4 35.Bb6 Ka8 36.Qd8 Bc8 37.Rc8) 32...Re6 33.Rb1! Be4 (33...Bb1 34.Bb6 Double attack (34.Qe1 Decoy)) 34.Rb2 (34.Rb6 Re5 35.de5 h6 36.Rc6 b6 37.Qg7 Kb8 38.Bd6 Ka8 39.Rc8) 34...Rc6 35.Qe1 (35.Rb6 Rc5 36.dc5 Bd5 37.Qc7 Ka8 38.Rb5 b6 39.Qc8 Ka7 40.cb6) 35...Rc5 36.dc5 Nd7 (36...Nc4 37.Rf2 Bd5 38.Qc3+-) 37.Qa5 Kb8 38.Qd8 Ka7 39.Qd7 Bc6 (39...g6 40.Rb5 Ka6 41.Qd8 Bg2 42.Qb6) 40.Qd6 (40.Qc7 Ka8 41.Qa5 Kb8 42.Rd2 Bd5 43.Rd5 b5 44.Rd8 Kb7 45.Qb6) 40...Ka8 (40...Bd5 41.Rb5 b6 42.Qb6 Ka8 43.Qa5) 41.Qc7 (41.Qd8 Ka7 42.Qb6 Ka8 43.Rd2 Bd5 44.Rd5 f5 45.Rd8) 41...Ka7 (41...g6 42.Qa5 Kb8 43.Rd2 Bd5 44.Rd5 b5 45.Rd8 Kb7 46.Qb6) 42.Rb6 (42.Qb6 Ka8 43.Rd2 Bd5 44.Rd5 f5 45.Rd8) 42...Ka8 43.Rc6 (43.Rc6 bc6 44.a5 h6 45.a6 f5 46.Qb7) 1-0. ClayPigeons (2070) - Lits44 (2045), Rated Bullet game, lichess.org, 2020.

7.Na3 Nc5 8.Nc4 Nd3 9.Bd3 Qd3 10.Na3-/+.

7.Na3 Bd6 8.Nc4 Ne7 9.Nd6 cd6 10.Nf3 0-0 11.d4 e4 12.Nd2 d5 (12...f5 13.Be2=) 13.Qb3 f5 14.g3 (14.Ba3 Rc8=) 14...a6 15.Be2 ab5 16.Bb5 Nc6 17.Ba3 Re8 18.0-0 Nf6 19.Qb2 Rc8 20.Nb3 Qb6 21.Nc5 Bf7 (21...Bd7 22.a5 Qc7 23.Rfc1+/-) 22.Rfb1 Qd8?? (22...Rc7!?+/-) 23.Rc1 (better 23.Nb7!? Qc7 24.Nd6 Red8 25.Nc8 Rc8+-) 23...Qc7 (23...Rc7 24.Qc3+-) 24.Rab1 (24.a5 Rb8 25.a6 ba6 26.Na6 Qa5 27.Nb8 Rb8 28.Rc6 Rb5+-) 24...h6 (24...Be6!?+/-) 25.Nb7!+- Qb7 26.Bc6 Qb2 27.Rb2 Re7?? (better 27...Re6 28.Rbc2 Rb8+-) 28.Be7 Ng4 (28...Nd7 29.a5 Rb8 30.Rb8 Nb8 31.Bb5+-) 29.Rbc2 (29.h3!? Nf6+-) 29...Rc7 30.Bd6 Ra7 31.Bb5 Kh7 32.Rc7 Rc7 33.Rc7 Kg6 34.a5 Nf6 35.a6 h5 36.a7 h4 37.a8Q hg3 38.Rf7! Kf7 39.hg3 Kg6 40.Be5 (40.Be8 Kh6 41.Bf7 Kh7 42.Be5 Ne8 43.Qe8 f4 44.Bg6 Kh6 45.Bf4) 40...Ng4 (40...Kf7 41.Bf6 gf6 42.Qe8 Kg7 43.Qe7 Kg8 44.Bd7 f4 45.Be6 Kh8 46.Qf8 Kh7 47.Bf5) 41.Bd7 (41.Be8 Kh7 42.Bf7 Nf6 43.Bf6 gf6 44.Qg8 Kh6 45.Qg6) 41...Ne5 42.Kg2 (42.Qe8 Kh6 43.Qh8 Kg5 44.de5 Kg4 45.Qh4 Kf3 46.Qh5) 42...Ng4 43.Bf5! Kf5 44.Qd5 Kf6 45.Qe4 Kg5 46.Qf4 Kh5 47.Qf5 Kh6 48.Qg4 Kh7 49.Qg7! Kg7 50.f4 Kf6 51.Kf3 Ke6 52.g4 Kf6 53.e4 White intends f5 53...Ke6 54.g5 Kf7 55.Kg4 Kg6 56.f5 Kf7 57.e5 Kg7 58.d5 Kf7 59.d6 Ke8 60.Kf4 Kd7 61.e6 (61.g6 Kc8 62.g7 Kb8 63.g8Q Kb7 64.Qd5 Kc8 65.d7 Kd8 66.e6 Ke7 67.d8Q) 61…Kc6 ½-½. ClayPigeons (2195) - Lits44 (2130), Rated Bullet game, lichess.org, 2020.

7.Qc2 a5 8.Na3 Pawn c4, live or die! (8.Bc4 Bc4 9.Qc4 Nb6=) 8...Nb6 (8...Ba3 9.Ba3 Nb6 10.Rd1=) 9.Nc4= Nc4 (9...Bb4 10.Nf3=) 10.Bc4 Bc4 11.Qc4 Bb4 12.Nf3 Ne7 13.0-0 Qd5 (13...Bd2? 14.Rfd1 Qd5 15.Qc2+-) 14.Qc2 0-0 (better 14...c5 15.e4 Qd6=) 15.Qc7 (better 15.e4 Qe6 16.d4+=) 15...Rfc8-/+ 16.Qb6?? (better 16.e4 Rc7 17.ed5 Nd5 18.Rfd1-/+) 16...Bc5-+ 17.e4 Qe4 (better 17...Qd7 18.Qc5 Rc5-+) 18.Qe6+/- Kh8 19.d4 ed4?? (better 19...Bb4 20.de5 Ng6+/-) 20.Qe4+- Re8 (20...d3+-) 21.Qd5 (better 21.Qb7 d3 22.Rad1+-) 21...Nd5= 22.Nd4 Bd4 23.Bd4 Rac8 24.Rfe1 (24.Rfd1 Kg8=) 24...Kg8 (24...Re1 25.Re1 h5 26.Ra1=+) 25.Re8= Re8 26.Rd1 Kf7 27.Bc5 (27.Bb2 Nb6 28.Bc3 Na4 29.Ba5 b6=) 27...Ke6 (27...Nc3!? 28.Rd7 Kg8=+) 28.Re1= Kd7 29.Rd1 Ke6 30.f3 (better 30.Re1 Kd7 31.Re8 Ke8 32.Bd4=) 30...Kf7?? (30...Rc8!? 31.Re1 Kf7=+) 31.Kf2 (better 31.Rd5 Rc8 32.Bb6+-) 31...Nb4 (31...Ke6!?=) 32.Rd7 (32.Bb6 Ke6 33.Ba5 Nd5 34.Re1 Kd7 35.Re8 Ke8+/-) 32...Kg6 (better 32...Ke6 33.Rd6 Ke5+/-) 33.Rb7?? (better 33.Bb6+-) 33...Nd3-+ 34.Kg3 Nc5 35.Rc7 Na4 36.Ra7 Rb8 37.Ra5 Nc3 0-1. ClayPigeons (2185) - batilogski (2185), Rated Bullet game, lichess.org, 2020.

7.Qc2 Nc5!?-/+.

5.e4 Be6

6.Qc2 Bc5 7.Bc4= Bc4 8.Qc4 Qe7 9.Nf3 Nd7 10.0-0 Nb6 11.Qc2 0-0-0 12.Rc1 Bb4 13.d4 ed4 14.Bd4 Nh6 15.Bb6 ab6 16.Qa4 Ba5 17.a3 Rhe8 18.Rc4 Rd3 19.h3 Red8 20.Rc1 (better is 20.Qc2+=) 20...Rf3?? (better is 20...f5 21.Rc4 fe4 22.Re4 Qf6=+) 21.gf3 +/–.

6.Qc2 c6 7.a4 Qa5 8.Bc4+= Bc4 9.Qc4 Qb4 10.Qe2?? (10.Qc2 Nd7 11.Bc3+=) 10...Qc5 (better is 10...Qb2 11.Nf3 Qa1–+) 11.Nc3 Nd7 (11...a6!? 12.Ba3 Qb6+/–) 12.Nf3+- Qc4?? (12...Ne7 13.0-0 Ng6 14.g3+-) 13.d3 (better is 13.Qc4 Ne7 14.0-0-0+-) 13...Qe6 (13...Qb3 14.0-0 Bc5 15.bc6 bc6 16.Rfd1+/–) 14.0-0 (14.d4 Bb4 15.bc6 bc6 16.de5 Qb3+/–) 14...Bc5 15.Rad1 (15.bc6 bc6 16.Rfd1 Bd4+/–) 15...Ne7 16.d4 ed4 17.Nd4 Bd4 18.Rd4 Rc8? (better is 18...c5 19.Rd2 0-0-0+/–) 19.Rfd1+- Nb8 20.Rd6 Qf7 21.e5 fe5 22.Ne4 (22.Qe5?! 0-0 23.Ne4 Rce8+-) 22...0-0 23.bc6 (23.Ng5 Qf5 24.Ne6+-) 23...Qf5?? (better is 23...Nbc6 24.Rd7 Rcd8 25.Rb7 Qa2+=) 24.Qc4 (24.cb7 Rce8 25.Ba3 Ng6 26.Qa2 Kh8+-) 24...Qf7 (24...Kh8 25.c7 Nbc6+-) 25.R1d3 (better is 25.Qf7 Rf7 26.cb7+-) 25...Nbc6 (better is 25...Qc4 26.f3 Nbc6–+) 26.Qc1?? (26.Qf7 Rf7 27.Rd7 Rb8=) 26...Rcd8?? (better is 26...Nb4 27.Rc3 Na2–+) 27.Rd8 Rd8 28.Rd8 Nd8 29.h4 (29.Qc7 Qd5 30.h3 Nec6= (30...Qe4?? 31.Qe7 Qe1 32.Kh2 Qf2 33.Qd8 Qf8 34.Qd7+-)) 29...Nec6 (29...Ndc6 30.Qd1+=) 30.Qg5 The isolani on e5 becomes a target (30.Qd1 h6=) 30...Ne6 31.Qg4 Ncd8 (31...h5 32.Qd1+=) 32.h5 (32.Be5 Nc6 33.Bc3 h5+/–) 32...a6 (32...Qf4 33.Qe2=) 33.h6 (better is 33.Be5!? h6 34.Bc3+/–) 33...Qg6= 34.Qg6 hg6 35.hg7 Kg7 ½–½. Jaramillo,Carlos O (1940) – Lizarazo Arango,Juan C (2085), 10th OPEN FERIA DE CALI Grupo B E, 2008.

6.Qc2 c6 7.a4 cb5!? 8.ab5 Nd7+=.

6.Qc2 c6 7.a4 Bd6 8.Bc4+= Qd7 (8...Bc4 9.Qc4 Ne7 10.Nf3+=) 9.Nf3+- Ne7 (9...cb5 10.ab5 Qc8 11.d3+-) 10.0-0 (10.d4 Bb4 11.Nbd2 Bd2 12.Nd2 ed4+-) 10...0-0 (10...cb5 11.ab5 Qc8 12.d3+=) 11.d4 Ng6 (11...ed4 12.Nd4 Bc4 13.Qc4 Kh8 14.Nc3+-) 12.Rd1 (12.Nbd2 cb5 13.ab5 Bf7+-) 12...Qe7 (12...Qf7 13.Nbd2 Nd7 14.Be6 Qe6 15.bc6 bc6 16.Nc4+-) 13.Nbd2 (13.bc6 Nc6 14.Be6 Qe6+=) 13...cb5+- 14.ab5 (worse 14.Bb5 Rc8 15.Qd3 Nf4+=) 14...Nd7 15.Qb3 Bc4 16.Nc4 Kh8?? (better 16...Qf7+-) 17.Nd6+- Qd6 18.Ba3 Qb6 19.Bf8 Rf8 (19...Ndf8 20.d5+-) 20.Qd5 (20.Qd5 Nb8 21.de5 fe5 22.Rd2+-) 1–0. Massudy (2575) – PsoyKorolenko (2240), lichess.org, 2020.

6.Qc2 c6 7.Bc4 Bc4 8.Qc4 a6 9.bc6 Nc6=.

6.Qc2 c6 7.Bc4 Bc4 8.Qc4 cb5 9.Qb5 Qd7 10.Nc3 Nc6 11.Nf3 Bb4 (11...Rc8 12.Rd1=) 12.Nd5+= Ba5 13.0-0 Nge7 14.d4 a6 15.Qb3 ed4 16.Nf4 (better 16.Bd4 Nd5 17.ed5 (17.Qd5?! Qd5 18.ed5 Nd4 19.Nd4 Rd8=) 17...Nd4 18.Nd4+-) 16...0-0-0? (better 16...Ng6 17.Ne6 Bc3 18.Bc3 dc3+=) 17.Ne6+- Rdg8 (17...d3 18.Rfd1+-) 18.Nc5 (18.Rfd1 Qd6+-) 18...Qc7 19.Bd4 Nd4 (better 19...Ng6+-) 20.Nd4 Bb6 (20...Qc5 21.Rfc1 Qc1 22.Rc1 Kb8+-) 21.Nde6 Qc6 (21...Bc5 22.Nc7 Kc7 23.Rac1+-) 22.Rfc1 Kb8 (22...Bc5 23.Rc5 Kb8 24.Rc6 Nc6+-) 23.Na6!! (23.Na6 Ka8 24.Rc6+-) 1–0. onur604 (2320) – igor102 (2185), lichess.org, 2020.

6.Qc2 Nd7 7.Bc4 Bc4 8.Qc4 =+.

4.c4 d4

5.e3 b6 6.ed4+/– ed4 7.Qf3 c6 8.bc6 Nc6?? (better is 8...Qc7 9.Ne2 Nc6 10.Nd4 Nd4 11.Bd4 Bb7 12.Qh5 g6 13.Qe2 Kf7+=) 9.Qc6+- (9.Qc6 Bd7 10.Qe4 Qe7 11.Qe7 Ne7 12.Nf3+-) 1–0. GuestQKTC – guestATB, freechess.org, 2017.

5.e3 Be6 6.ed4+= ed4 7.Nf3 (7.Qf3 Ne7+=) 7...d3 (7...c5 8.Bd3=) 8.Qb3+/- Bf5 (8...Nd7 9.Qd3 (9.Bd3?? Nc5 10.Bg6 hg6-+) 9...Qe7 10.Be2+/-) 9.Nd4 Bg6 (9...Qe7 10.Kd1 Nh6 11.Nf5 Nf5 12.Bd3+-) 10.Bd3+- Bd3 11.Qd3 Bc5? (better 11...Nd7+-) 12.Qe4 Qe7 (12...Kf7 13.Ne6 Qe8 14.0-0 Qe6 15.Qb7 Qc4 16.Qa8+-) 13.Ne6 Bd6 14.Ng7 (better 14.0-0!? Nd7 15.Re1 Rb8+-) 14...Kf7 15.Qe7 Ne7 16.Nh5 Ng6 17.Ng3 (17.d4 Rd8+-) 17...Ne5 18.d3?? (better 18.Be5 Be5 19.Nc3+-) 18...Nd3-+ 19.Kd2 (19.Kf1 Nb2 20.Nd2 Rd8-+) 19...Nb2 20.Nc3 Nc4 21.Kc2 Ne5 (21...a6 22.a4-+) 22.Nge4 Nbd7 23.f4 (23.Rad1 Nc4-+) 23...Ng4 24.g3 Nc5 25.Nd6 (25.Rae1 a6 26.h3 Ne4 27.Ne4 Nh6-+) 25...cd6 26.Nd5 (26.Rae1 Rhe8-+) 26...Rac8 27.Kd2 (27.Kc3-+) 27...Ne4 28.Kd3 Nc5 (better 28...Nef2 29.Kd4 Nh1 30.Rh1-+) 29.Ke2?? (29.Kd2 Rhe8 30.Rhe1-+) 29...f5 (29...Ne6 30.h3 Rc2 31.Kd3-+) 30.Kf3 (30.h3 Ne4 31.hg4 Ng3 32.Kf3 Nh1 33.gf5 Rc5-+) 30...Rhe8 (better 30...Ne6 31.Rac1 Nd4 32.Kg2-+) 31.Rhe1 (31.h3 Nf6 32.Ne3-+) 31...Re1 (better 31...Nb3! 32.Re8 Rc2 33.Re7 Kf8 34.Re8 Ke8 35.Nf6 Kf7 36.Ng4 fg4 37.Kg4 Na1 38.h4-+) 32.Re1 Re8 (better 32...Ne6 33.Nb4-+) 33.Rc1?? (33.Re8 Ke8 34.h3-+) 33...Re3 (33...Nh2!? 34.Kg2 Re2 35.Kg1-+) 34.Kg2?? (better 34.Ne3 Nh2 35.Kg2+-) 34...Re2-+ 35.Kf3 (35.Kg1 Nh2 36.Rc3 Ra2 37.Re3-+) 35...Ra2 (35...Rf2) 36.h3 (36.Rc2 Rc2 37.h3 Rf2) 36...Ra3 (36...Rf2) 37.Ke2 (37.Rc3 Nh2 38.Ke2 Ra2 39.Kd1 Nf1-+) 37...Nf6 (better 37...Nf2 38.Ne3 Nh3 39.Nf5-+) 38.Nb4 (38.Ne3-+) 38...Rg3 39.Rd1 Rh3 40.Rd2 (40.Rd6 Ne6 41.Nd3 Ke7 42.Re6 Ke6-+) 40...Nfe4 41.Rd5 Rh2 (41...Nc3!? 42.Kf2 N5e4 43.Kf1 Nd5 44.Nd5-+) 42.Kf3 Rh3 43.Kg2?? (43.Ke2 Nc3 44.Kf2 N5e4 45.Kf1 Nd5 46.Nd5-+) 43...Rb3-+ 44.Rf5 Ke6 45.Rh5 Rb4 46.Rh6 (46.Rh7 Rb5 47.Kf3 Rb3 48.Ke2 Nc3 49.Kd2 Nd5-+) 46...Kd5 (better 46...Nf6!? 47.Rh1-+) 47.Rh7 Kc4 48.Kf3 Kb5 49.Kg4 (49.Rh8 Rb3 50.Kg4 a5-+) 49...Rb3 (better 49...Nf6 50.Kg3 Nh7 51.f5-+) 50.Rb7 (50.Re7 a5 51.Kf5 a4-+) 50…Kc4 (50...Kc4 51.Ra7 d5-+) 0-1. ClayPigeons (2120) - arjunap (2265), Rated Bullet game, lichess.org, 2020.

5.e4 de3 6.fe3= Bg4?? (6...a6 7.ba6 Na6 8.d4=+) 7.Be2 (better is 7.Qg4 a6 8.Qe4+-) 7...Be2= 8.Qe2 c5 (8...a6 9.d4=) 9.Qf3 (9.Qh5 g6 10.Qf3 Qc7+/–) 9...Qc7 10.Ne2 Be7 (10...Nd7 11.0-0+=) 11.Qd5 (better is 11.Nbc3!?+/–) 11...Nd7+= 12.0-0 0-0-0 13.a4 Nb6 (13...Qd6 14.Qe4 g6+=) 14.Qf3 (better is 14.Qe4+/–) 14...Nc4?? (14...Qd7 15.Qe4 Qd3 16.Qg4 f5 A) 17.Rf5?? Nh6 18.Qg7 Nf5 (18...Qf5?! 19.Qe7 Ng4 20.Qc5 Kb8 21.Nf4–/+) 19.Qe5 Nd7–+ (19...Qe2 20.Qf5 Kb8 21.Bh8–+); B) 17.Qg7 Bf6 18.Qf7 Qe2–/+; C) 17.Qf5 Qf5 18.Rf5 Nc4 19.Be5 Ne5 20.Re5+=) 15.Bc3?? (15.Qg4 Kb8 16.Qc4 Qd6+-) 15...g5?? 16.a5?? b6?? 17.ab6 Nb6 18.Ba5 h5 19.Bb6 Qb6 20.Nbc3 g4 21.Qf5 Kc7 22.Ra6 Qb7 23.Qe6 Rd6?? 24.Rd6 Bd6 25.Nd5 Kb8 26.Qd6 Ka8 27.Qd8 Qb8 28.Qb8 Kb8+- 29.Ra1 Nh6 30.Nf6 Rd8 31.Rd1 Nf5 32.Nh5 Ne3 33.Ra1 Nc4? 34.b6 ab6 35.Nhg3 Rd2 36.h3 gh3 37.gh3 Ne3 38.h4 Nd5 39.h5 Nf6 40.h6 Nh7 41.Rf1 e4?? 42.Rf7 Ng5 (43.Rg7 Nf3 44.Kf2 Rd6+-). abt – PrincessAmanda, Live Game Caissa's Web, 2004.

5.Nf3 Be6 6.e3 de3 7.fe3 a6 8.d4 e4 (8...ab5 9.cb5 e4 10.Nfd2=+) 9.d5 Bf7 10.Nd4 Nh6 11.Nc3 f5 12.Be2 Bd6 13.Ne6 Be6 14.de6 The passed pawn on e6 quickly leads to threats 14...Qh4 15.Kd2 (15.Kf1!? Rf8 16.Kg1 ab5 17.Qd5+=) 15...0-0-/+ (15...Bh2 16.Nd5 0-0 17.Be5+-) 16.Nd5 ab5 (16...Bh2 17.Be5 f4 18.e7 (18.Bc7?! Nf5+-; 18.ef4?! c6 19.Qe1 Qe1 20.Rae1 cd5 21.Rh2 d4+/-) 18...fe3 19.Kc1+- (worse 19.Ne3 Qe7 20.Bh2 Rd8 21.Nd5 c6-/+)) 17.cb5 (17.e7 Re8 (worse 17...Be7 18.g3 Qg5 19.h4 Bb4 20.Kc1+/-) 18.g3 Qh3+=) 17...Re8=+ (17...Bh2? 18.e7 Re8 19.Qb3+-) 18.g3 Qd8 19.Qb3 Kh8 (19...Re6 20.Nb6 Bb4 21.Kc2 cb6 22.Qe6 Nf7 23.Rhd1+-) 20.Kc2 c6 (better 20...Qg5=+) 21.Bg7+/- Kg7 22.Qb2 Kf8? (22...Kg8 23.Nf6 Kf8 24.Nh7 Kg8 25.Nf6 Kf8 26.Ne8 Ke8+-) 23.Qh8+/- Ng8 24.Rhf1 (24.Qh7?! Re6 25.Qf5 Nf6 26.Qe6 cd5+=) 24...Qg5 25.Qh7 Nh6 26.Rf5! (26.Rf5 Qf5 27.Qh6 Kg8 28.Nf6 Qf6 29.Qf6+-; 26.Qb7 cd5 27.h4 Qf6-+ (27...Qe3?? 28.Rf5 Kg8 29.Rg5 Qg5 30.hg5+-)) 1-0. pcmvr – angelini, net-chess.com, 2020.

5.e3 c5

6.bc6 bc6 7.Nf3 (7.ed4 ed4 8.Qf3 Qe7 9.Ne2 Bb7=) 7...c5 (7...d3 8.Ne5 fe5 9.Qh5 Ke7 10.Qe5 Kf7 11.Qh5 g6 12.Qf3 Nf6 13.Bf6 Qf6 14.Qf6 Kf6 15.Bd3=+) 8.ed4 cd4 9.d3 (9.Bd3!? Bb7 10.0-0=) 9...Nc6=+ 10.g3 (10.Be2 Rb8 11.Bc1 Bb4 12.Nfd2 Nge7=+) 10...Bg4 11.Bg2 Qd7 (11...Qa5 12.Ke2-/+) 12.0-0 Bd6 (12...Rb8 13.Bc1=+) 13.Na3 (13.Nbd2 Rb8 14.Rb1 Nge7=+) 13...Nge7 14.Nb5 Rc8 (14...Bc5 15.Qe2=+) 15.Nd6= Qd6 16.Qa4 0-0 17.Ba3 Qc7 18.Nd2 Be2 19.Rfc1 Bd3 20.Bd5 Kh8 (better 20...Rf7=) 21.Be6?? (better 21.Bc6 Qc6 22.Qb3+/-) 21...Rb8-/+ 22.Nb3 Rfe8 (better 22...Be2!?-/+) 23.Nc5= Nc8?? (better 23...e4 24.Na6 Qb7=) 24.Bd7 Nb6 25.Qc6 Qc6 26.Bc6 Bc4 27.Be8 Re8 28.Ne4 f5?? (better 28...Bd5 29.f3 Rd8+-) 29.Nd6 Rd8 30.Bc5 (better 30.Nc4 Nc4 31.Rc4+-) 30...Be6 31.Nb7 (31.Bb6 ab6 32.Rc6 Rb8+-) 31...Rd5 (31...Rd7 32.Na5 Na4 33.Nc6+-) 32.Bb4 (better 32.Bb6 ab6 33.Rc6 Bd7 34.Rb6 g5+-) 32...d3 33.Nc5 Bc8 (33...Bg8 34.f3+-) 34.Rd1 (34.f3 f4+-) 34...e4 35.Rac1 h6 36.Nb3 (36.f3 Bd7+-) 36...Rd8 37.Bc3 Be6 38.Nd4 Ba2 39.Nc6 (better 39.Rd2!? Bd5 40.Nf5+-) 39...Rd6+/- 40.Ne5 Bb3 41.Rd2 Rd5 42.Rb2 Bc2 43.Ng6 Kh7 44.Nf8 (44.Nf4 Rc5 45.Rbc2 dc2 46.Rc2 a5=) 44...Kg8= 45.Ne6 Nc4?? Black prepares the advance d2 (better 45...Na4!? 46.Rbc2 dc2 47.Rc2 Kf7=) 46.Ra2?? (better 46.Rb7!? Ne5 47.Rg7 Kh8+-) 46...d2 (46...Rd7!? 47.Nd4 e3+-) 47.Bd2+- (47.Rac2?! dc1Q 48.Rc1 g5+/-) 47...Rd2? (47...Bb3 48.Ra7 Rd2 49.Ng7 Rd5+-) 48.Rac2 Rc2 49.Rc2 Ne5 50.Rc7 Nf7 51.Nd4 (51.Ra7 g6+-) 51...a5 (51...g6 52.Ra7 Kg7 53.h4+-) 52.Nf5 a4 (52...g6 53.Ne7 Kg7 54.Ra7+-) 53.Ra7 a3 54.Ra3 g6 55.Ra7 (better 55.Ne7 Kg7 56.Ra4+-) 55...gf5 56.Kg2 (56.Ra5 Nd6 57.Rd5 Nc4+-) 56...Kg7 57.h3 Kf6 58.g4 Ne5 (58...Ng5 59.Ra5 fg4 60.hg4+-) 59.gf5 (59.Kg3 fg4 60.hg4 Ke6+-) 59...Kf5 60.Kg3 Nd3 61.h4 Ne5 62.Kg2 (better 62.Ra5!?+-) 62...Nf3 63.Kf1 (better 63.h5!? Kg4 64.Ra4 Nh4 65.Kf1+-) 63...Nh4= 64.Ke2 (64.Ra6 Kg5+=) 64...Nf3 (64...Kf4 65.Rh7 Nf5 66.Rh8=) 65.Ra5 (better 65.Ke3 Ng5 66.Ra8+=) 65...Ne5?? (better 65...Kf4=) 66.Ke3+- Ke6 (66...Kf6 67.Ke4 Ng6 68.f4+-) 67.Ke4 Ng6 (67...Nf7 68.Ra6 Nd6 69.Kd4+-) 68.Ra6 (better 68.Rh5 Kf7 69.Rh6 Nf8+-) 68...Kf7 69.Kf5 (69.f4!? h5+-) 69...Ne7 70.Ke5 (70.Kg4 Kg7+-) 70...Ng6 71.Ke4 Ne7 (71...Kg7 72.f4+-) 72.Kf3 (better 72.Rh6 Ng8 73.Rb6+-) 72...Kg7 73.Kg2 (73.Kg4 Ng6+-) 73...Kf7 (73...Nf5 74.f4+-) 74.Ra7 (74.Rh6!? Nf5 75.Rh7 Ke6+-) 74...Kf6 75.Rb7 (75.Kg3 Ng6+-) 75...Ng6 (75...Nd5 76.Kg3+-) 76.Rb6 Kg5 (76...Kg7 77.Kg3+-) 77.Rc6 (77.Kg3!? Ne7+-) 77...Ne5 78.Rc5 (78.Rc5 Kf4 79.Rc8+-) 1-0. ClayPigeons (2220) - yuashuplyak (2190), Rated Blitz game, lichess.org, 2020.

6.Bd3 Be6 7.Qh5 Bf7 8.Qf3 Nd7 (8...de3!? 9.Qb7 ef2 10.Kf2 Nd7=) 9.Qb7+= Nb6 (9...Ne7 10.Na3+=) 10.Qc6+/- Qd7 11.Qd7 Kd7 12.Na3 Ne7 13.0-0-0 (13.Nf3 Bg6 14.Bg6 Ng6+/-) 13...Bg6 (13...a6!? 14.ba6 Ra6=) 14.Bg6+/- hg6 15.f4 Nf5 16.Nh3 Nd6 (16...e4 17.Nf2 Re8 18.g4+=) 17.fe5+/- fe5 18.ed4 ed4 19.d3 Nf5 20.Ng5 Bd6 21.g3 Rhe8 (21...Ne3 22.Rde1+=) 22.Ne4 Na4 (22...Ne3 23.Rde1+/-) 23.Nc2 (23.Rde1 Ne3+/-) 23...Nb2 (23...a6 24.Na3+/-) 24.Kb2 a6 25.a4 Ra7 (25...Ne3 26.Ne3 de3 27.Kb3 ab5 28.ab5+-) 26.Rhf1 ab5 27.ab5 (27.Nd6?! Kd6 28.ab5 Re2+=) 27...Rea8 (27...Rh8 28.Rf2+-) 28.Ra1 (28.Nd6?! Kd6 29.Ra1 Ra1 30.Ra1 Rh8 31.Ra6 Kd7 32.Ra7 Ke6+-) 28...Ne3 (28...Ke7+-) 29.Ra7 Ra7 30.Rf7 Be7 31.Rg7 Nc2 32.b6 Ra8 33.Kc2 Ke6 (33...g5 34.Nc5 Kc6 35.b7+-) 34.Rg6 Kf7 35.Rc6 1-0. onur604 (2320) - omid2021 (2315), Casual Rapid game, lichess.org, 2021.

6.bc6 Nc6

7.ed4 ed4 8.d3 (8.Bd3 Ne5 9.Qb3 Be6=) 8...f5 (8...Bb4 9.Nd2=+) 9.Be2 Nf6 10.Bf3 (10.Nf3 Bb4 11.Nbd2 0-0=) 10...Bb4 11.Nd2 0-0 12.Ne2 Re8 (12...Ne5 13.0-0 Bc5 14.Nf4=) 13.0-0 Bc5 (13...Ne5!?=) 14.Nb3+/- Bf8 (14...Qb6 15.Rb1+/-) 15.Nbd4 (15.Ned4 Ne5+/-) 15...Ne5 16.Ng3 g6 (16...Ba3 17.Bc3 Bb4 A) 18.Ngf5?? Bc3 (18...Nf3?! 19.Nf3 Bc3 20.Rc1-+) 19.Bb7 Bd4 (worse 19...Bb7 20.Qb3 Bd4 21.Qb7-+; worse 19...Ba1 20.Nc6 Nc6 21.Ba8-+) 20.Nd4 Bb7-+ (20...Qd4?! 21.Ba8 Bg4 22.Bf3-+); B) 18.Bb4 Qd4 19.Re1+=) 17.Re1 Bg7 (better 17...Qa5+/-) 18.Bd5 (better 18.Re5 Re5 19.Nc6 bc6 20.Be5+-) 18...Nd5= 19.cd5 Qd5 (19...f4 20.Nge2 f3 21.Nf4 (worse 21.gf3 Qd5 22.Nf4 Qf7=+) 21...fg2 22.Nde6 Be6 23.Ne6 Qd5 24.Ng7 Nf3 25.Qf3 Re1 26.Kg2 Qf3 27.Kf3 Rf8 28.Kg2=) 20.Qb3 (20.f4 Nf3 21.Nf3 Re1 22.Qe1 (worse 22.Ne1 Bb2 23.Rb1 Bd4 24.Kh1 Qa2-/+) 22...Bb2 23.Qe8 Kg7 24.Re1+=) 20...Qb3=+ 21.ab3 Bd7 22.Nc2 (22.Rad1!?=+) 22...Nd3-/+ 23.Re8 Re8 (23...Be8 24.Bg7 Kg7 25.Nd4-/+) 24.Bg7=+ Kg7 25.Ra7 Bc6 26.h3 (better 26.Nf1=+) 26...Re2?? (better 26...Ne1 27.Ne1 Re1 28.Kh2 f4-+) 27.Ne2+- Nc5 (27...Kf6 28.b4 Ke5 29.b5+-) 28.Ned4 (28.b4 Nd7 29.Ncd4 Be4+-) 28...Kf6 (28...Be4 29.f3 Bd5 30.Ra5+-) 29.Nc6 bc6 30.b4 Ne6 31.Ra6 h5 (31...Ke7 32.Rc6 Kd7 33.b5+-) 32.Rc6 Ke5 (32...Ke7 33.b5 Kd7 34.Rc4+-) 33.b5 Nd4 (33...Nd8 34.Rg6 Nb7 35.Rh6+-) 34.Rg6 (34.Nd4 Kd4 35.Rg6 Kd5 36.b6 Kd4 37.b7 Kc5 38.b8Q h4 39.Qc7 Kd5 40.Rd6 Ke4 41.Qe7 Kf4 42.Qe3) 34...f4 (34...Nb5 35.Rh6 Nc3+-) 35.Nd4 Ke4 36.b6 (36.b6 Ke5 37.Nf3 Kd5 38.b7 Kc5 39.b8Q Kc4 40.Qc7 Kd3 41.Rd6 Ke4 42.Qc2) 1-0. ClayPigeons (2060) - temomc (2045), Rated Bullet game, lichess.org, 2019.

7.ed4 Nd4 8.d3 Bb4 9.Nd2 Qa5 (9...Ne7 10.Bd4 Qd4 11.Ngf3-/+) 10.Ngf3 (10.Bd4 ed4 11.Ne2=+) 10...Bg4 (10...Nf3 11.gf3 Bc5 12.Qe2-/+) 11.Be2 (better 11.Bd4!? ed4 12.Be2=) 11...Bf3 12.Bf3 0-0-0 (12...Nf3 13.gf3 0-0-0 14.Qc2-/+) 13.Bg4 (13.Bd4!? Rd4 14.Ke2 Bd2 15.Qd2 Qd2 16.Kd2=) 13...Kb8-/+ 14.a3 (14.Bd4 Rd4 (14...ed4?! 15.Qc2=+) 15.Be2 e4-+) 14...Bd2-+ 15.Qd2 Nc2 16.Ke2 Qd2 17.Kd2 Na1 18.Ba1 Nh6 19.Bf3 Nf5 20.Be4 Nd4 21.Rb1 Rd7 (better 21...b6-/+) 22.Bf5?? (better 22.f4-/+) 22...Nf5-+ 23.f4 (23.Ke2 Re8 24.f3 Nd4 25.Bd4 ed4 26.Kf2 Re3-+) 23...ef4 (23...e4 24.d4-+) 24.g4 (24.c5 Kc7-+) 24...fg3 25.hg3 Ng3 0-1. ClayPigeons (2150) - Cecillion (2160), Rated Bullet game, lichess.org, 2020.

7.ed4 Nd4 8.Nf3 Nc6 9.d3 (9.Nc3 Bf5=) 9...Bc5-/+ 10.g3 (10.Qb3 Nge7-/+) 10...Nge7 (10...Bf2 11.Kf2 Qb6 12.c5 Qb2 13.Nbd2-+) 11.Bg2 (11.Qb3 Nf5 12.a3 Nfd4 13.Nd4 Bd4-/+ (worse 13...ed4 14.Bg2=+)) 11...Bg4 (11...Bf2 12.Kf2 Qb6 13.Ke2 Qb2 14.Nbd2-+) 12.Nc3 (12.0-0 Bf5 13.Ne1 Qd7-/+) 12...Nd4 (12...Bf2!? 13.Kf2 Qb6 14.Kf1 Qb2-+) 13.Ne4 (13.0-0 Nef5=+) 13...Bb4-/+ 14.Kf1 0-0 15.h3 Bf3 16.Bf3 Nec6 17.Bg2 (17.Kg2 Qd7=+) 17...f5 (17...Rb8 18.Kg1-/+) 18.Nc3 g6 (18...f4 19.Bd5 Kh8 20.Kg2=+) 19.Nd5 (19.Bd5 Kh8=) 19...Bc5=+ 20.a3 (20.Rb1 Rb8=+) 20...Ne7 (20...Rb8 21.h4=+) 21.Rc1 (21.f4 ef4 22.gf4 Rf7=) 21...Nd5 (21...Kg7 22.f4=) 22.Bd5= Kg7 23.Qe1 (better 23.Bb7 Rb8 24.Rb1=+) 23...b6?? (better 23...Re8=+) 24.Qe5+- Qf6 25.Bd4 (25.Qc7 Rf7 26.Bf7 Qf7 27.Qe5 Qf6+-) 25...Bd4 26.Qf6 Rf6?? (26...Kf6 27.Ba8 Ra8+-) 27.Kg2 (better 27.Ba8 f4 28.g4+-) 27...Re8 28.Rc2 (28.Rhe1 Rff8+/-) 28...Rff8 29.Rb1 Re7 30.Bf3 Rfe8 31.Rb5 Re5 32.Rd5 Rd5 33.Bd5 g5 (33...Re1 34.a4=) 34.Kf3 (34.g4 fg4 35.hg4 Re1+/-) 34...Kf6 35.Re2?? (35.g4 Re1+=) 35...Re2 (better 35...g4 36.hg4 fg4 37.Kg4 Re2-+) 36.Ke2+= f4 37.Kf3 fg3 (37...Ke5 38.h4 h6 39.Be4+=) 38.fg3+/- h5 (38...Ke5 39.Kg4 Bc5 40.a4+/-) 39.h4 (39.Ke4 Be5 40.Bf7 Bg3 41.Bh5 Bd6+/-) 39...gh4 (39...g4 40.Kg2+=) 40.gh4+/- a5 41.Be4 Be5 42.Bd5 Bb2 (better 42...Bd4!?=) 43.a4+/- Bd4 44.Bc6 Ke5? (better 44...Kg7!?+/-) 45.Be8+- 1-0. ClayPigeons (2115) - slow91 (2075), Rated Bullet game, lichess.org, 2021.

7.Nf3 Bc5 8.Qb3 Nge7 9.Qb5 (9.Be2 Nf5=+) 9...b6 10.a4 (10.ed4 ed4 11.Bd3 0-0=+) 10...a6 (10...de3 11.fe3 Bb4 12.a5 Ba5 13.Be2-/+) 11.Qb3 0-0 12.Be2 Nb4 Black prepares the advance d3 (12...Nf5 13.Bd3-/+) 13.0-0 (13.Nd4!? ed4 14.ed4=+) 13...d3-/+ 14.Bd1 a5 (14...Be6 15.Nc3-/+) 15.Na3 Bf5 16.Nb5 h6 (16...Nec6 17.Rb1=+) 17.h3 (17.Rb1 Rc8=) 17...Nec6 18.Bc3 (18.Rb1 Rc8=+) 18...Qd7 (18...Rc8 19.Rb1=+) 19.Qb2 (better 19.Nh4=+) 19...Bh3 (better 19...Qf7-/+) 20.gh3+= Qh3 21.Nh2 f5 (21...Qh4!?+=) 22.Bf3 (22.Be5 Ne5 23.Qe5 Rae8+-) 22...e4 (22...Rae8 23.Nc7 Re7 24.Nd5+/-) 23.Bg2+- (23.Bg7 ef3 24.Nf3 Rf7-+) 23...Qh4 24.f4 (better 24.Bg7!? Rf7 25.Bc3+/-) 24...Rf7 25.Rf2 (25.Rab1 Nc2 26.Kh1 Rd8+=) 25...Ne7 (better 25...Nc2 26.Rd1 Ne3 27.de3 Be3=+) 26.Kh1?? (26.Rb1 Nc2+=) 26...Ng6 (better 26...Qf2!? 27.Rf1 Qh4 28.Nd4-+) 27.Rg1?? (better 27.Rff1+=) 27...Qf2-+ 28.Qc1 (28.Be4 fe4 29.Rg6 Kh7-+) 28...Qh4 (28...Na2 29.Qf1 Qf1 30.Nf1 Nc3 31.Nc3-+) 29.Qe1 (29.Be4 Na2 30.Qb1 fe4 31.Rg6 Nc3 32.Nc3-+) 29...Nf4 (better 29...Qe1 30.Re1 Rc8-+) 30.Qh4+- Ng2 (30...Ne2 31.Rf1 Re8+-) 31.Rg2 Be7 (31...Na2 32.Bb2 Re8 33.Qh6+-) 32.Qg3 (better 32.Qh6 Bf8 33.Nd6 Raa7 34.Nf7 Rf7+-) 32...Bh4 (32...Bg5+-) 33.Qg7! Rg7 34.Rg7 (34.Rg7 Kf8 35.Rh7+-; worse 34.Bg7 Kh7 35.Bd4 Bg5+-) 1-0. ClayPigeons (2120) - lennardm (2165), Rated Bullet game, lichess.org, 2019.

7.Nf3 de3 8.fe3 Nb4 9.d4= e4 (9...Bf5 10.Na3=) 10.Nfd2 f5 11.Qa4 Bd7 12.Qb3 Qa5 (12...b6 13.a3 Nc6 14.d5=) 13.Bc3 (13.a3 Nc6+=) 13...Ba4 (13...Qa4 14.Bb4 Qb3 15.ab3 Bb4 16.Ke2=) 14.Bb4 (14.Qb2 Qb6 15.c5 Nd3 16.Bd3 Qb2 17.Bb2 ed3=) 14...Bb4 15.Qb2 Nf6 (15...0-0-0 16.Be2=) 16.a3 Bd6? (16...Be7 17.Qb7 Rd8 18.Be2=) 17.Be2 (better 17.c5!? Be7 18.Qb7+-) 17...Qc7 (better 17...Bc6=) 18.c5?? (better 18.Nc3 Bc6 19.Nb5 Bb5 20.Qb5 Qd7 21.c5+/-) 18...Bh2-/+ 19.Nc4 Bg3 20.Kd2 0-0 21.Nc3 Bc6 22.Nb5 Bb5 23.Qb5 Rfd8 (23...f4 24.Rab1 Rf7 25.Rh3-/+) 24.Qb3 Nd5 Black prepares f4 (better 24...Kh8-/+) 25.Nd6= f4?? (better 25...Qa5 26.Kd1 Rd6 (26...Bd6 27.Qd5 Kh8 28.Qf5 Qa4 29.Kd2 Qa5 30.Kc2+-) 27.cd6 Kh8+= (worse 27...Bd6 28.Bc4+-)) 26.Qd5 Kh8 (26...Kf8 27.Qf5 Kg8 28.Qh7 Kf8 29.Qf5 Kg8 30.Bc4 Qf7 31.Qf7) 27.Nf7 (27.Nf7 Qf7 28.Qf7 h6 29.Rh6 gh6 30.Rh1 fe3 31.Ke3 Bf2 32.Kf2 e3 33.Ke1 Rd6 34.cd6 Rd8 35.Rh6; 27.Rh7 Kh7 28.Rh1 Bh2 29.Rh2 Kg6 30.Qf5) 1-0. ClayPigeons (2160) - Galerna (2020), Rated Bullet game, lichess.org, 2021.

7.Nf3 de3 8.fe3 Bc5 9.Be2 (9.d4 Bb4 10.Bc3 ed4 11.ed4 Qe7 12.Be2 Bg4=) 9...Nge7 (9...e4 10.Ng5 Qe7 11.Bh5 g6 12.0-0-/+) 10.0-0 (10.d4 Bb4 11.Kf2 ed4 12.ed4 Bf5=) 10...Bg4 (10...e4 11.Ne1 0-0 12.Nc3=+) 11.a3 (11.Nc3 Bf5=) 11...0-0 (11...Qb6!? 12.Nc3 Bf3 13.Rf3 Nd4=) 12.Nc3= Na5 13.Na4 (13.Ne4 Bb6+=) 13...Bd6= 14.Rb1 (14.c5 Bc7=) 14...Rc8=+ 15.c5 Bc5 16.Nc5 (16.Bc3 Bd6 (worse 16...Ba3 17.Ba5 Qa5 18.Qb3 Nd5 19.Qa3+/-) 17.Ba5 Qa5=+) 16...Rc5 17.Bc3 Nc4 (better 17...e4!? 18.Nd4 Be2 19.Qe2 Qd7=+) 18.Rb7+= Ne3 (better 18...a5!?+=) 19.de3+/- Rc3 20.Qd8 Rd8 21.Re7 Re3 (better 21...a5+-) 22.Bd1?? (better 22.Bc4 Kh8 23.Ra7+-) 22...Ra3 23.Rb7 h5 24.Bb3 Kh8 25.Bc2 Ra2 (25...a5 26.h3 Bc8 27.Rb8=) 26.Bg6= e4? (26...a5!?=) 27.Nh4 (27.Be4 a5+/-) 27...e3+= 28.Re1 (better 28.Re7 Be2 29.Rc1+/-) 28...e2?? (28...Re2 29.Rbb1 Re1 30.Re1 a5 31.Re3 a4+/-) 29.h3+- Bc8 30.Rc7 1-0. ClayPigeons (2085) - mishir (2035), Rated Bullet game, lichess.org, 2019.

7.Nf3 de3 8.fe3 e4 9.Nd4=.

7.Nf3 de3 8.fe3 Be6 9.Be2 Bc5 (9...Qb6 10.Qb3=) 10.0-0 (10.Nc3 Nh6=) 10...Qb6 11.Qc2 Nge7 12.a3 (12.Nc3!? Bf5 13.Qc1=) 12...Bf5-/+ 13.Qc1 0-0 (13...Na5!? 14.Qc3 Nb3=+) 14.Nc3= Qc7 (14...Qd8 15.Na4 b6 16.Nc5 bc5 17.Qc3=) 15.Nd5 (15.d4 ed4 16.Nb5 Qd7 17.ed4 Bb6+=) 15...Qd7= 16.d4 ed4 (16...Nd5? 17.cd5 Nd4 18.Nd4 Bd4 19.ed4+-) 17.ed4 Nd4?? (better 17...Bd6 18.Ne7 Ne7=) 18.Nd4 (18.Bd4!? Qd6+-) 18...Nd5 19.Rf5 (better 19.cd5!? Rac8 20.Qf4 Qd5 21.Bf3+-) 19...Qf5 20.cd5 Qd5?? (better 20...Bd4 21.Bd4 Rac8+/-) 21.Bc4+- Bd4 (21...Rad8 22.Kf1+-) 22.Bd4 Rac8 (22...Qf7+-) 23.Bd5 Kh8 24.Qb2 Rfd8 25.Bf3 (25.Bb7 Rc7+-) 25...Rc7 26.Rd1 (26.Ba7 Re8+-) 26...Rcd7 27.Qc3 (better 27.Rc1!? h6 28.Ba7 Kh7+-) 27...h6 28.Rd3 (28.Kf2 b6+-) 28...a6 (28...b6 29.Bg4 Rd5 30.Qc7+-) 29.Kf2 (29.Be4 Kg8+-) 29...b5 30.Ke3 (better 30.Be4 Kg8+-) 30...a5 (30...Rd6 31.h4+-) 31.Qb3 (31.Qa5!? Re8 32.Kd2 Rb8+-) 31...b4 (31...Re7 32.Kf4 Red7 33.Qb2+-) 32.ab4 ab4 33.Qb4 Kh7 34.Qc5 (34.Be4 Kg8+-) 34...g6 35.Qd5! Kg7 (35...Rd5 36.Bd5 Combination) 36.Qd7! Rd7 37.Bc6 (better 37.Bf6 Kf6 38.Rd7 Ke6+-) 37...Re7 38.Kd2 Rf7 (38...Re6 39.Bf3 Rd6 40.g4+-) 39.Bc5 Rc7 40.Bd5 (better 40.Rd6 h5 41.Bb6+-) 40...Rc6 (40...Rc5 41.Ke3+-) 41.Rd4 (41.Bc6 f5 42.Rd7 Kf6 43.Rd6 Kg7 44.Bd4 Kf7 45.Bf6 g5 46.Bd5 Kg6 47.Be5 Kh7 48.Rd7 Kg6 49.Bf7 Kh7 50.Rd8 h5 51.Rh8) 41...Rc5 42.Bc4 Rd5 (42...f5+-) 43.Rd5 f5 44.Rd7 (44.Ke3 Kf8+-) 44...Kf6 45.Kd3 Ke5 46.Ke2 Kf6 47.Kf1 (47.Rd6 Kg7+-) 47...Kg5 (47...Ke5 48.Rd5 Ke6 49.g4 fg4 50.Rh5 Kf6 51.Rh6+-) 48.g3 (48.Rd6!? h5+-) 48…Kf6. ClayPigeons (2090) - chess_student_411 (2085), Rated Bullet game, lichess.org, 2020.

5.e3 Bc5

6.a4 de3 7.fe3 Ne7 8.Nf3 (8.d4 Bb4 9.Kf2 c5=) 8...0-0 (8...e4 9.Nd4 Bd4 10.ed4=) 9.d4= Bb4 10.Nbd2 (10.Bc3 Bc3 11.Nc3 Nf5 12.de5 Ne3=) 10...e4=+ 11.Ng1 f5 12.Ne2 Ng6 (12...f4 13.Qb3 Bd2 14.Kd2=+) 13.g3 Nd7 14.Bg2 Nf6 15.Qb3 Bd2 16.Kd2 Ng4 (16...c5 17.Ke1=+) 17.Raf1 Kh8 18.h3 Nf6 19.Nf4 (19.Ke1 a6=) 19...Nf4=+ 20.gf4 c5 (20...a6 21.Ke1=+) 21.d5 a6 22.Rf2 ab5 23.ab5 b6 24.Bf1 Bd7 (24...Rf7 25.Ke1=) 25.Be2 Ra7 26.Qc3 (26.Rg2 Bc8=) 26...Qe7 (26...Bb5!? 27.cb5 Nd5=+) 27.Rg2+= Rfa8? (27...Qd8 28.Rd1=) 28.h4?? (better 28.Rhg1 Rf8 29.Rg7 Qg7 30.Rg7 Kg7 31.Qe5+-) 28...Ra2= 29.h5 h6 30.Rhg1 Rg8 (30...Ng4 31.Ke1=) 31.Rg6 (better 31.Ke1!? Kh7 32.Qb3+/-) 31...Be8= 32.R6g2 Rb2? (better 32...Bh5 33.Bh5 Nh5=) 33.Qb2+- Kh7 (33...Qd8 34.Ke1+-) 34.Rh1 (better 34.Qe5 Qd7 35.Qb8 Bh5 36.Qb6+-) 34...Bf7 35.Bd1 Be8 (35...Qd7 36.Ke1+-) 36.Rhg1 (better 36.Qe5 Qd7 37.Qe6 Qe6 38.de6+-) 36...Rf8?? (better 36...Bh5!? 37.Bh5 Nh5+-) 37.Qc3 (better 37.Rg7 Qg7 38.Rg7 Kg7 39.Qe5+-) 37...Rg8 38.Rg3 (38.Qe5!? Qd7+-) 38...Qa7 39.R3g2 Qa2?? (39...Qe7 40.Qe5 Qd7+-) 40.Ke1+- Qa4?? (40...Qa7 41.Qf6! gf6 42.Rg8+-) 41.Qe5 (better 41.Ba4 Ng4 42.Rg4 fg4 43.Qe5 Bh5 44.Qh5+-) 41...Qb4 42.Kf1 (better 42.Rd2 Qc4 43.Qf5 Kh8 44.Qe5+/-) 42...Qd2?? (better 42...Qc4 43.Ke1 Qb4 (worse 43...Qd5 44.Qd5 Nd5 45.Bb3+/-) 44.Rd2 Bd7=) 43.Rg7 (better 43.Rd2 Rf8 44.Rdg2+-) 43...Rg7-+ 44.Rg7 Kg7 45.Qe7 (45.Qe7 Bf7 46.Be2 Qe3 47.Qe5-+). ClayPigeons (2085) - TheDillingerPrisoner (2080), Rated Bullet game, lichess.org, 2020.

6.Nf3 Bg4 7.Qc2 (7.ed4 Bd4 8.Bd4 ed4 9.Qe2 Ne7=) 7...Ne7 (7...Bf3 8.gf3 Qe7 9.Qe4=) 8.Qe4 (8.ed4 ed4 9.Qe4 Bf5 10.Qb7 Nbc6 11.bc6 Rb8 12.Bd4 Rb7 13.cb7 Bd4 14.Nd4 Qb8 15.Nf5 Nf5=) 8...Bf5 (8...Bf3 9.Qf3 c6 10.Be2=) 9.Qb7+= Nd7 (9...Nbc6! 10.Ba3 Na5 11.Qa8 Qa8 12.Bc5 Be4=+) 10.ed4+/- Rb8 (10...0-0 11.Be2+/- (worse 11.dc5 Nc5 12.Qa8 Qa8-/+)) 11.Qa6 ed4 12.Nd4 (12.Bd4 Bd4 13.Nd4 Nc5 14.Qa7 Qd4 15.Qb8 Kd7 16.Qh8 Qa1-+) 12...0-0 (12...Rb6!? 13.Qa5 Ne5+/-) 13.Nf5+- Nf5?? (better 13...Rb6 14.Nh6! gh6+-) 14.Bd3 (better 14.Qe6 Rf7 15.Qf5+-) 14...Re8 (better 14...Bf2!? 15.Kf2 Nc5 16.Bf5 Na6-+) 15.Kf1+= Nh4 16.Qa3?? (better 16.Be2+=) 16...Ba3 17.Ba3 Ne5 18.Bc2 (18.Be2 Qd4 19.Nc3 Nd3 20.Bd3 Qd3 21.Kg1 Qd2-+) 18...Nd3 19.Nc3 Qd4 20.Bd3 Qd3 21.Kg1 Qd2 22.Ne4 Re4 23.g3 Re1 24.Re1 Qe1 0-1. ClayPigeons (2050) - mixerupper13 (2105), Rated Bullet game, lichess.org, 2020.

5.e3 d3

6.Qb3 c5?? 7.Qd3 (7.Bd3 Nd7+/-) 7...Qc7 8.Be2 Be6 9.Nc3 Nd7 10.Nd5 Qd6 11.Bh5 g6 12.Be2 0-0-0 13.e4 f5 14.f3 Nb6 (14...Ngf6 15.Nf6 Nf6 16.Qd6 Bd6 17.ef5 Bf5 18.Bc3+=) 15.a4 fe4 (15...Nf6!+/-) 16.fe4+- Bh6 (16...Nd7 17.Nf3+-) 17.Nf3 Nf6? (better 17...Nd7+-) 18.Be5 (18.Nf6?! Qd3 19.Bd3 Rd3 20.Be5 Nc4+/-) 18...Qd7 (18...Qf8 19.Bf6 Nd5 20.cd5 Qf6+-) 19.Bf6 1-0. ClayPigeons (2105) - jacek27 (2160), Rated Bullet game, lichess.org, 2020.

6.Nc3 f5 (6...Ne7 7.Qh5 g6 8.Qf3+=) 7.Qh5 g6 8.Qf3 Nd7 (8...Nf6 9.e4 Ne4 10.Ne4 (10.Qd3?! Qd3 11.Bd3 Nc3=; 10.Bd3?! Ng5 11.Qe3 Bd6=) 10...fe4 11.Qe4+/–) 9.Bd3 e4? (9...Nc5 10.Be2 Nd3 11.Bd3 Qd3+-) 10.Ne4+- fe4?? (better is 10...Ngf6 11.Nf6 Nf6+-) 11.Be4 (better is 11.Qe4 Ne5 12.Qe5 Ne7 13.Qh8 Qd3 14.Bg7+- (< 14.Qh7 Be6+-)) 11...Ngf6 =.

5.e3 de3

6.fe3 a6 7.d4 ab5 8.cb5 ed4 9.ed4 Be6 10.a3 Ne7 11.Bd3 Nd5 12.Nh3 Qe7 13.Qe2 g6 14.0-0 Bh3 15.gh3 f5 16.Re1 Kd8 17.Qf2 Qg5 18.Kh1 Bd6 19.Bc1 Qh5 20.Qg2 f4 21.Bc4 c6 22.Qg4 Qg4 23.hg4 Rf8 24.Re6 Kd7 –/+.

6.fe3 Bc5 7.d4 ed4 8.Qh5 g6 9.Qc5 Qe7 10.Qd4 c5 11.Qf4 g5 12.Qf3 g4 (12...Be6 13.Nc3+-) 13.Qf4 h5 (13...Nd7 14.Nc3 (worse 14.Qg4 Qe3 15.Qe2 Qe2 16.Be2 Ne7+-) 14...Qe5 15.Be2+-) 14.Nc3 Be6 15.Ne4 Nd7 16.0-0-0 (16.Nd6 Kf8+-) 16...b6 (16...h4 17.Be2+-) 17.Nd6 Kf8 18.Bd3 a5 19.Bf5 (19.h3 Nh6+-) 19…Bc4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.fe3 Bc5 7.Nf3 Ne7 8.Be2 0-0 (8...Nf5 9.Nc3=) 9.0-0 (9.d4 ed4 10.ed4 Bb4 11.Bc3 Bc3 12.Nc3 Nf5+=) 9...Bg4 (9...e4 10.Nd4=) 10.d4+= ed4 11.ed4 Bd6 12.c5 Bf4 13.Nc3 (13.Bc4 Kh8 14.Qe1 a6 15.ba6 Na6+/-) 13...Be3 14.Kh1 Nd7 (14...Re8!?+=) 15.Bc4 Kh8 16.Nd5 (16.Qd3 Bf3 17.Rf3 Bg5+/-) 16...Nd5 17.Bd5 Rb8 18.Qd3 Bh6 19.Be4 (19.Bc1 Bc1 20.Rac1 Re8+/-) 19...f5+= 20.Bd5 Bf3 (20...Nf6 21.Bc4 Ne4+=) 21.Bf3 (21.Qf3 Nf6 22.Bb7 Ne4 23.Be4 fe4 24.Qe4 Rb5+-) 21...Qg5 (better 21...Nc5 22.Qc2 Ne6=) 22.Rae1 Nf6 23.Re7 (23.Bc1 Qg6 24.Bh6 Qh6 25.Re7+/-) 23...Rbe8? (23...Ne4 24.Rd7 Qh4-/+) 24.Bc1 (24.Rc7 Ng4 25.g3 f4+/-) 24...Qg6 25.Bb2?? (25.Rc7 Ne4 26.Bh6 (26.Rb7?! Bc1 27.Ra7 Bf4 28.Be4 fe4=+) 26...Qh6 A) 27.Rb7 Ng3 28.Kg1 Nf1 29.Kf1 Re3 30.Qf5 g6-/+ (30...Rf5?? 31.Rb8 Re8 32.Re8 Rf8 33.Rf8); B) 27.Kg1+-) 25...Re7-+ 26.Bb7 Re3 27.Qd1 Rfe8 28.Bc6 (28.Bf3 Ne4 29.Kg1 Ng5-+) 28...R8e7 (28...Re2 29.Bc3 Ne4 30.Qe2 Ng3 31.hg3 Re2 32.Rf3-+) 29.d5 (29.Bf3 Ne4 30.Kg1 Bf4-+) 29...Re2 30.Rg1 (30.d6 Ne4 31.Be4 R7e4 32.Rg1 cd6 33.cd6 Rb2 34.d7-+) 30...Bf4 (better 30...Ng4 31.Qd4 Qh5 32.Qg4 fg4 33.Be8 Re8 34.b6 Bf4 35.Bg7 Kg7 36.h3 Qh3 37.gh3 Rh2) 31.d6 (31.Qe2 Re2 32.Be8 Qh6 33.Bh5 Qh5 34.h3 Qh3 35.gh3 Rh2) 31...cd6 (31...Qh6 32.h3 Qh3 33.gh3 Rh2) 32.cd6 (32.cd6 Qh5 33.h3 Qh3 34.gh3 Rh2). ClayPigeons (2130) - BorninUSSR (2030), Rated Bullet game, lichess.org, 2020.

6.fe3 c6 7.a4 cb5 (7...Nh6 8.d4=+) 8.ab5= Bc5 (8...Bb4 9.Bc3 Bc3 10.Nc3=) 9.d4+= ed4?? (9...Bb4 10.Bc3 Qe7 11.c5 Bc3 12.Nc3+/-) 10.ed4 (better 10.Qh5 g6 11.Qc5+-) 10...Bb4+= 11.Nd2 Ne7 12.Ngf3 0-0 13.Bd3 Bg4 (13...Bf5 14.Qc2 Bd3 15.Qd3+=) 14.0-0+/- Nd7 (14...Bf5 15.Ne4 a5 16.c5+/-) 15.Qc2 White prepares c5 15...h6 16.c5 b6?? (better 16...Bd2 17.Bc4 Kh8 18.Nd2 f5+/-) 17.Qb3 Kh8 18.Qb4 bc5 (18...Nc5 19.dc5 Qd3 20.Qg4 Qb5 21.Bd4+-) 19.dc5 Nd5 (19...Bf5 20.Bc4 Bg6+-) 20.Qg4 Ne3 (20...Nc5 21.Bb1 Ne7+-) 21.Qg6 f5 (21...Kg8 22.Qh7 Kf7 23.Bg6 Ke6 24.Nd4 Kd5 25.Be4 Kc5 26.Rfc1 Nc2 27.Rc2 Kd6 28.Rc6 Ke7 29.Re6 Kf7 30.Bg6) 22.Rfe1 (22.Qg7) 22...Nf6 23.Re3 Rc8 24.Bf5 (24.Bf5 Rc5 25.Bf6 Rc1 26.Rc1 Qf6 27.Qh7) 1-0. ClayPigeons (2100) - Bulleteer (2120), Rated Bullet game, lichess.org, 2021.

6.fe3 Be6 7.Nf3 Nd7 8.d4 ed4 9.ed4 Qe7 (9...Bb4 10.Bc3 Bc3 11.Nc3=) 10.Nc3 (10.Ba3!? Qf7 11.Bf8 Qf8 12.Be2+=) 10...0-0-0 11.Kf2 Nh6 12.h3 Nb6 (12...Ne5 13.Qa4 Nf3 14.gf3 Rd4 15.Ne4 Re4 16.fe4 Qc5 17.Ke2-+) 13.d5 (better 13.c5!? Nd5 14.Qa4+=) 13...Qc5 (13...Qb4 14.Qb3 Bc5 15.Ke1-/+) 14.Qd4 (better 14.Nd4 Bf5 15.g4-/+) 14...Qd4 (14...Nf5 15.Ne4 A) 15...Nd4?! 16.Nc5 Bd5 17.Bd4 (worse 17.Nd4 Bc5 18.cd5 Na4=+) 17...Bf3 18.Ne6 Rd4 19.Nd4+=; B) 15...Qe7-+) 15.Nd4= Bc5 (better 15...Bf5=) 16.Nce2?? (better 16.Ne4 Bd4 17.Bd4+=) 16...Nc4-+ 17.Bc3 (17.de6 Nb2 18.Kf3 Bd4-+ (18...Rd4?! 19.Nd4 Bd4 20.Rh2-+)) 17...Bd5 (17...Rd5?! 18.Nf4 Nd6 19.Nfe6 Ne4 20.Ke3 Nc3 21.Nc5 Rc5 22.a4-+) 18.Rc1 (18.Ng3 Rhe8 19.Re1 Re1 20.Ke1 Ne3-+) 18...Nf5 19.g4 (19.Ke1 Nfd6 20.Nc2 Nb5-+) 19...Nd4 (better 19...Ne5!? 20.gf5 Nd3 21.Kg3 Bd6 22.Kh4 g5 23.Kh5-+) 20.Bd4 Bd4 21.Nd4 Bh1 22.Ne6 (22.Rc4 Rhe8-+) 22...Ne5 23.Nd8 (23.Rc7 Kb8 24.Nd8 Kc7 25.Ne6 Kb6 26.Ng7 Bd5-+) 23...Rd8 24.Be2 Bd5 25.Ke3 1-0. ClayPigeons (2130) - donquijote82 (2125), Rated Bullet game, lichess.org, 2021.

6.fe3 Nh6 7.Ne2 Bd6 (7...Bd6 8.d4 Ng4=+; 7...Be6 8.d3=+). wach – bueno, Caissa.com, 2004.

6.fe3 Nh6 7.Nf3 Bd6 (7...e4 8.Nd4=+) 8.Be2 f5 (8...e4 9.Nd4=) 9.d4 (better 9.Ne5 Qe7 10.Nf3+/-) 9...e4=+ 10.Ne5 Qh4 11.g3 Qh3?? (better 11...Qg5=+) 12.Bf1+- Bb4 (12...Qf1 13.Rf1 Be5 14.de5+-) 13.Nc3 (13.Bc3 Qf1 14.Rf1 Bf8+-) 13...Bc3 (13...Qg4 14.Ng4 Ng4 15.Bh3+-) 14.Bc3 Qg4 15.Ng4 Ng4 16.Qe2 (16.d5 0-0+-) 16...0-0 (16...a6 17.a4+-) 17.Bg2 Be6 (17...a6 18.a4+-) 18.0-0 a6 19.a4 Nd7 (19...c6 20.bc6 bc6 21.Bh3+-) 20.d5 Bf7 21.h3 (21.Rf5 Ngf6+-) 21...Ngf6 22.Rf5 Nc5 (22...Bg6 23.Rf4+-) 23.ba6 (23.Bf6 gf6 24.Rf6 Bg6 25.Rf8 Rf8+-) 23...Ra6 24.Bb4 (24.Rf6 gf6 25.Bb4 b6+-) 24...b6 25.Bc5 bc5 26.Qc2 Re8 27.Qb2 Bg6 (27...Rb6 28.Qc3 Rb4 29.a5+-) 28.Re5 Rf8 (28...Rea8 29.Re7 c6 30.d6+-) 29.Qb5 Rd6 (29...Rfa8 30.a5+-) 30.Qc5 Nd7 (30...Rc8 31.Re7 Nd7 32.Qb4+-) 31.Qd4 (better 31.Qc7 Ne5 32.Qd6 Nc4 33.Qe6 Bf7 34.Qe4 Nd6+-) 31...Ne5 32.Qe5 Rfd8 (32...Re8 33.Qd4+-) 33.Be4 (better 33.Qe7 R8d7 34.Qh4 Kf7+-) 33...Bf7 (33...Re8 34.Qd4 Be4+-) 34.Bf5 (34.c5 Re8 35.Qd4 Rh6+-) 34...c6 (34...Re8 35.Qd4+-) 35.e4 (35.Qe7 cd5 36.c5 g6 37.cd6 Re8+-) 35...cd5 36.cd5 Rb6 (36...Rf6 37.Rb1 Rf8 38.Rb8+-) 37.a5 Rbb8 38.a6 Re8 39.Qd4 (39.a7 Ra8 (39...Re5 40.ab8Q Re8 41.Qb7 Kh8 42.Qf7 Rd8 43.Ra7 Rg8 44.Bh7 Kh7 45.Qh5) 40.Qd6 h6+-) 39...Ra8 40.a7 (40.Bd7 Red8 41.Bc6 Rac8+-) 40...g6 41.Bd7 Red8 42.Bc6 Be8 43.Ba8 Ra8 44.Qc5 (44.d6 Bc6 45.Qc4 Kg7 46.Qc3 Kh6 47.Qc6 Rc8 48.Qc8 Kg7 49.a8Q Kh6 50.Qf8 Kh5 51.Qd5 g5 52.Qdf7) 44...Bf7 45.d6 Kg7 46.e5 (46.d7 Be6+-) 46…Be6 (46...Be6 47.Qc7 Kh6+-). ClayPigeons (2140) - alkoborz (2230), Rated Bullet game, lichess.org, 2020.

5.e4 Nd7

6.d3 a6 7.ba6 Ra6 8.Nf3 Bb4 9.Nbd2 Ne7 10.a3 Bd6 11.Be2 Nc5 12.0-0 Bd7 13.Nb3?? (better 13.Re1-/+) 13...Ba4-+ 14.Nfd2 Rb6 15.Bh5 g6 16.Be2 Nb3 (16...Rb3?! 17.Nb3 0-0 18.Qe1 Bb3 19.f4-+) 17.Nb3 Bb3 18.Qd2 Nc6 19.g3 (19.Rfb1 Qa8-+) 19...0-0 20.f4 Qe7 21.f5 g5 22.h4 (22.Bd1 Bd1 23.Rfd1 Ra8-+) 22...h6 (22...gh4!? 23.gh4 Ra8 24.Rfb1-+) 23.hg5 hg5 24.Kg2 Rf7 25.Rh1 Rh7 26.Rh7 Qh7 27.Rh1 Qg7 28.Bh5 Ne7 (28...Ra6 29.Qc1-+) 29.Be8 Kf8 30.Bh5 Ba4 31.Bc1 Be8 32.Be8 Ke8 33.Qa5 Nc6 34.Qa8 Kd7 (better 34...Nd8 35.Qa4 c6-+) 35.Rh8 Qf7 36.Qc8 Ke7 37.a4 Rb1?? (37...Rb3!? 38.c5 Rd3 39.Bg5-/+) 38.Bg5 (38.Ba3 Rb4 39.Bb4 Qg8 40.Qg8 Bb4 41.Qe6) 38...fg5-/+ 39.a5? (39.f6 Kf6 40.Qf5 Ke7-/+) 39...g4 (39...Rb2 40.Kh3 Rf2 41.c5=) 40.a6? (better 40.f6 Kf6 41.Qf5 Ke7 42.Rh7 Rb2 43.Kg1-/+) 40...Rb2-+ 41.Kg1 Rb1 42.Kg2 Rb2 43.Kf1?? (43.Kg1 ba6 44.f6 Kf6 45.Qf5 Ke7-+) 43...Rb1 (better 43...ba6 44.Qa6 Rb8 45.Rb8 Nb8-+) 44.Ke2?? (44.Kg2 ba6 45.f6 Kf6 46.Qf5 Ke7-+) 44...Rb2 45.Kd1?? (45.Kf1 ba6 46.Qa6 Rb8 47.Rb8 Nb8-+) 45...Ra2?? (better 45...ba6 46.f6 Kf6 47.Qf5 Ke7-+) 46.ab7= Rb2 47.c5?? (better 47.Rh6 Nd8 48.b8Q Rb8 49.Qb8+/-) 47...Bc5 (47...Rb1 48.Kd2 Qa2) 48.Qc7 Kf6 49.Rh6 (49.Qc6 Ke7 50.Qc5 Kd7 51.Qc8 Kd6 52.Rd8 Ke7 53.Rd7 Kf6 54.Qh8 Qg7 55.Qg7) 49...Kg7+- 50.Rg6 Kf8 51.Qc8 (51.Qc8 Ke7 52.Re6 Qe6 53.Qe6 Kf8 54.Qf6 Kg8 55.Qc6+-) 1-0. miskob (2165) - alifie (2420), Rated Blitz game, lichess.org, 2018.

6.f4 =+.

4.c4 Be6

5.cd5 Bd5

6.Qc2 a6 7.e4 Be6 8.Nf3+=.

6.Qc2 a6 7.e4 Bf7 8.ba6 Ra6 9.Nf3=.

6.Qc2 c6 7.a4 (7.Nc3 cb5 8.Nd5 Qd5+=) 7...Bb4 (7...Nd7 8.e4 Be6 9.Nf3 cb5 10.Bb5=) 8.e4 Bf7 (8...Be6 9.Nf3+=) 9.Bc4 Nh6 10.Nf3 0-0 11.0-0 Qc7 (11...Qe7 12.Bf7 Nf7 13.d4+=) 12.Bf7 Nf7 13.Nc3 (13.d4 Nd7+=) 13...cb5 14.ab5 Bc3 (14...Nd7 15.d4+=) 15.Bc3 Qc4 (15...Nd7 16.Rfc1+=) 16.Rfb1 (16.d4 Rc8 17.Rac1 Qb5 18.de5 fe5=) 16...Nd7 17.Rb4 Qc5 (17...Qe6 18.d4+=) 18.d4 (18.Qb3 Rfc8+-) 18...ed4+= 19.Rd4 Qb5 20.Rd5 (20.Rb4 Qc6 21.Nd4 Qc8+=) 20...Qc6 21.Nd4 Qc8 22.Nf5 Re8 23.Rad1 (23.f3 Nb6 24.Rda5 a6+=) 23...Nb6= 24.R5d4 Qc6 (24...Qe6 25.f3=) 25.Qb3 Qe6 (25...Re4?? 26.Rd8 Rd8 27.Rd8 Re8 28.Ne7 Kh8 29.Nc6 (29.Qf7?? Rd8 30.h3 Qc3–+) 29...Nd8 30.Na7+-) 26.Qa3 Ne5 (26...g6 27.Ne3=) 27.Ba1 (27.f3 Nec4 28.Qa1 Qf7+=) 27…Nf7 ½–½. Taulien,Hans_Juergen (2350) – Henrich,Guenter (2315), Demoturnier remoteschach.de, 2002.

6.Qc2 Bd6 7.e4 (7.Nc3!? Bf7 8.g3+=) 7...Bf7= 8.Bc4 Nh6 9.a4 0-0 10.Nf3 a6 11.0-0 c6 (11...ab5 12.Bf7 Nf7 13.ab5 Ra1 14.Ba1=) 12.Bf7 (12.Na3 Qc7+/–) 12...Nf7 13.Nc3 cb5 (13...Ng5 14.Ng5 fg5 15.Ne2+=) 14.ab5+/– Nd7 15.d4 ed4 16.Nd4 Qb8 17.h3 Bh2 18.Kh1 Be5 19.Rfd1 Nb6 20.ba6 Bd4 21.Rd4 ba6 22.Rb4 Qd6 23.Qb3 Rfb8 24.Rd1 Qc7 25.Rc1 Nd7 (better is 25...a5!? 26.Rd4 Qf4+=) 26.Nd5+/– Rb4 27.Qb4 (27.Nc7?? Rb3 28.Na8 Rb2 29.Rc8 Nf8–+; 27.Nb4?! Qb6 28.Qd5 Rd8+=) 27...Qd6 28.Qb3 Rb8 29.Qa2 Kh8 30.Nf6 Nde5 31.Nd5 Nd3 32.Rc2 a5 33.Rd2 Nb2 34.Rb2 Rc8 35.Rc2 Rb8 (35...Rc2 36.Qc2 Nd8 37.f4+-) 36.f4 Qd8 37.Rc7 Nd6 38.Qc2 Ne8 39.Rf7 Nd6 40.Re7 Qc8 (40...Rb7 41.e5 Re7 42.Ne7+-) 41.Rc7 Qg8 42.e5 Nb5 43.Rc5 Qf8 (43...Nd4 44.Qe4 Ne6 45.Ra5+-) 44.e6 Qe8 45.e7 Nd6 (45...Nd4 46.Qe4 Nc6 47.Qf5 Ne7 48.Ne7+-) 46.Ra5 Qc8 47.Qc8 Rc8 48.Nb6 Rg8 49.Rd5 Ne8 50.Rf5 Nf6 51.g4 1–0. Taulien,Hans_Juergen (2350) – Staats,Carsten (2315), remoteschach.de, 2002.

6.Qc2 Nh6 7.e4 (7.Nc3 a6 8.Nd5 Qd5+=) 7...Bf7= 8.Nf3 Be7 9.d4 0-0 (9...ed4!? 10.Nd4 0-0+=) 10.de5+/– Nd7 11.Nbd2 (11.Be2 Ne5 12.Ne5 fe5+/–) 11...fe5 (better is 11...Ne5 12.Ne5 fe5+=) 12.Ne5?? (better is 12.Bc4+/–) 12...Ne5–/+ 13.Be5 Ng4 14.Bg3 (14.Bc7?? Qd4 15.0-0-0 Nf2–+; 14.Qc7?? Ne5 15.Qd8 Rfd8–+ (15...Bd8?! 16.f4 Ng6 17.g3–+)) 14...Qd4 15.Rc1 Rad8 16.Be2 Bb4 17.Rd1? (better is 17.0-0 Ne3 18.fe3 Qe3 19.Bf2 Qe2 20.Nf3 Qb5 21.Rb1+=) 17...Be6–+ 18.Rf1 Rd7 19.h3 (19.a3 Ba5 (19...Ba3?! 20.Bc4 Re8 21.Be6 Re6 22.Ke2–/+) 20.b6 ab6–+) 19...Ne5 20.a3 Ba5 21.Bh4 (21.Be5 Qe5 22.Bd3–+) 21...Rf4 22.Bg5 (22.Rh1 Rh4 23.g4 Rf7–+) 22...Re4 (22...Re4 23.Be3 Re3 24.fe3 Qh4 25.Rf2 Rf7–+) 0–1. Taulien,Hans_Juergen (2350) – Staats,Carsten (2315), remoteschach.de, 2002.

6.Nc3 Be6 7.e3 (7.Nf3 Bd6=) 7...Ne7 (7...a6 8.d4 ed4 9.Qd4 Qd4 10.ed4=) 8.Nf3 Nd5 9.Be2 (9.Qb3 Nf4 10.Qc2 Ng6+=) 9...Be7 (9...a6 10.Nd5 Bd5 11.0-0=) 10.0-0 0-0 (10...Nc3 11.dc3 Qd1 12.Rfd1= (worse is 12.Rad1 Ba2 13.Ra1 Be6–/+)) 11.d4 Nc3 12.Bc3 e4 13.Nd2 Bd5 14.a4 (14.Qc2 f5=) 14...Nd7 (14...f5 15.Qc2=) 15.a5 c5 (15...a6 16.ba6 ba6 17.Qc2+=) 16.bc6+= bc6 (16...Bc6?? 17.Bc4 Kh8 18.d5+-) 17.Qa4 (17.f3 f5+=) 17...f5= 18.Bc4 Nf6 (18...Qc7 19.Rfc1 Qd6 20.Bb4 Qb4 21.Qc6 Qc4 22.Qd7+/– (22.Nc4?? Bc6 23.Nd6 Nb8–+)) 19.Rfc1 (19.Qc6 Rc8 20.Qa6 Rc4 21.Nc4 Qc8 22.Qa7 Bc4=) 19...Qd7 (19...Qd6 20.Bb2 Ng4 21.Nf1=) 20.Bb4 Bb4 21.Qb4 Rab8 22.Qc3 Qd6 23.Ba2 The isolani on c6 becomes a target (23.Rab1 f4=) 23...Ba2 (23...Ng4 24.Nf1 f4 25.Bd5 cd5 26.Qc7=) 24.Ra2 Nd5 25.Qc5 (25.Qc2 Rf6+=) 25...Qc5 26.Rc5 (worse is 26.dc5 Nb4 27.Raa1 Nd3–/+) 26...Rb5 (26...f4!? 27.ef4 Nf4=) 27.Rc6+= Rfb8 28.Rc1 Rb2 (28...Nb4 29.Ra3+=) 29.Rb2+/– Rb2 30.Nc4 Ra2 31.Kf1 (31.h3 Kf8+/–) 31...Nb4 (31...Kf7 32.Ne5 Ke6 33.Rc6 Ke7 34.Ra6 Ra1 35.Ke2 Ra2 36.Ke1 Ra1 37.Kd2 Ra2 38.Kc1 Rf2 39.Ra7 Ke6 40.Rg7 Ne3 41.a6+/–) 32.Nd6 Threatening mate... how? 32...g6 33.Rc8 Kg7 34.Rc7 Kf6 35.Ra7 The passed pawn on a5 quickly leads to threats 35...Nd3 36.Ne8 (36.f4 Ke6 37.Nf7 Rf2 38.Kg1 Re2+=) 36...Ke6 37.a6 (37.f4!?+/–) 37...Rf2 (37...Ra1!? 38.Ke2 Ra2 39.Kd1 Nf2 40.Kc1 Nd3 41.Kb1 Rb2 42.Ka1 Rb6+=) 38.Kg1+/– Re2 Threatening mate... how? 39.h3 Re3 (39...Nb4 40.Nc7 Kd6 41.Rb7+/–) 40.Rh7 Re1 41.Kh2 Ra1 (41...Kd5 42.a7 Ra1 43.Nc7 Kd4 44.a8Q Ra8 45.Na8+-) 42.a7 (42.Nc7 Kd6 43.a7+=) 42...e3 43.Nc7 (43.d5 Kd5 44.Rd7 Kc4 45.Nd6 Kb4 46.Re7–/+) 43...Kd6+= 44.Nb5 Kd5 (44...Kc6 45.Nc3+=) 45.Re7+/– Kc6 (45...f4 46.Re8 Kc4 47.a8Q Ra8 48.Ra8 Kb5 49.Re8=) 46.Nc3 (46.Re3 Kb5 47.Rd3 Ra7 48.Kg3+=) 46...f4+= 47.h4 Nf2 Do you see the mate threat? 48.g3?? (better is 48.g4 Ng4 49.Kg2+=) 48...f3–/+ 49.g4 (49.a8Q Ra8 50.Re6 Kd7 51.Rb6–+) 49...Ng4–+ 50.Kg3 f2 The mate threat is Rg1 51.Rf7 Ra7! 52.d5 (52.Ra7 A deflection 52...f1Q) 52...Kb6 (52...Kb6 53.Rf8 Nh6–+) 0–1. Franke,Roland – Reichenbacher,Gerhard, Bahn–chM Stade, 1992.

6.Nc3 Bf7 7.e4 Bc4?? (7...Be6 8.Nf3 c5 (8...Bc5 9.Na4 Bd6 10.d4 Nd7 11.Bd3 Bb4 12.Nc3+=) 9.Be2 Bd6 10.0-0 Ne7 11.Qc2 Nd7 12.a4=; 7...Qd7 8.Nf3 c5 9.Qa4 (9.Rc1 Bd6 10.Qa4 Ne7 11.Bc4 Bc4 12.Qc4=; 9.Qc2 Bd6 10.Na4 Qe7 11.Bc4 Nd7 12.Bf7=) 9...Bd6 10.Bc4 Bc4 11.Qc4 a6 12.0-0+=) 8.Bc4+- Bc5 (8...Nd7 9.Nf3+-) 9.Nf3 (9.Qg4 Kf8+-) 9...Nd7 10.0-0 Nb6 (10...c6 11.d4 ed4 12.Na4+- (worse is 12.Nd4 Ne5 13.Ne6 Qd1 14.Nd1 Nc4 15.Nc5 cb5+-)) 11.Bb3 (11.Ne5 Nc4 12.Nc4 Bd4+-) 11...h5 (11...Ne7 12.a4+-) 12.Nd5 g5 (12...c6 13.Nb6 ab6 14.d4 ed4 15.Qd3+-) 13.d4 Bd6 (13...ed4 14.Nd4 Bd4 15.Bd4 h4+-) 14.de5 fe5 (14...Be5 15.Ne5 Nd5 16.Bd5 fe5 17.Be5+-) 15.Ne5 (15.Ne5 Be5 16.Be5 Nd5 17.Bd5+-) 1–0. Kaczmarek,Michal – Jobe,Tom, IECC, 1999.

6.e3 c6 7.Nf3 cb5 (7...e4 8.Nd4=) 8.Bb5= Bc6 9.Bc6 Nc6 10.0-0 Bd6 11.Nc3 Nge7 12.Nb5 Bb8 13.a4 a6 14.Nc3 0-0 15.d4 e4? (better 15...ed4!? 16.Qb3 Kh8+=) 16.Ne4 Nd5 17.Ba3 Re8 18.Nc5 (18.Qc2 Bc7+/-) 18...b6 19.Nd3 a5 (19...Bd6!?+/-) 20.Rc1 Qd7 21.Qc2 Nce7 (21...Ncb4 22.Bb4 ab4 23.Qc4+-) 22.Rb1 Ba7 (22...Rc8 23.Qa2 Kf8 24.Rbc1+-) 23.Nd2 (23.e4!? Nc7+-) 23...Rac8 24.Qb2 (24.Nc4 Nf5 25.Rfc1 Qe6+-) 24...Nf5? (better 24...Rc3 25.Nc1 Qa4+=) 25.Rfc1 Nd6 26.Nf3 (26.Bd6!? Qd6 27.Qb3 Kh8+-) 26...Nc4 (26...Ne4 27.Qa2 Kh8 28.Rc8 Rc8 29.Rc1 Rc1 30.Bc1+= (worse 30.Nc1 Qa4 31.Nd3 Nec3=+)) 27.Qa2 (27.Qb3 Na3 28.Qa3 Qe6+/-) 27...Na3? (27...Qa4 28.Nc5 A) 28...bc5? 29.Rc4 (worse 29.Qc4 Qc4 30.Rc4 cd4 31.Rc8 Rc8 32.ed4 Rc3=+) 29...Qd7 30.Bc5+-; B) 28...Qa3 29.Qc4 Rcd8+/-) 28.Qa3+/- Kh8 29.h3 Rc1 30.Rc1 (30.Qc1?! Qa4 31.Ra1 Qd7=) 30...Rc8 31.Nd2 Rc1 32.Nc1 h6 33.Ncb3 Nb4 34.Ne4 Qd5 35.Ng3 (35.Nc3 Qd7+-) 35...g6 36.Nd2 Kg7 37.Nf3 h5 38.Qd3?? (better 38.e4 Qc4 39.e5+/-) 38...Nd3-+ 39.Ne2 Qb3 (better 39...Qa2!? 40.Nf4 Qf2 41.Kh1 Qf1 42.Kh2 Nf4 43.ef4-+) 40.Ng3 Qa4 41.Kh2 Qd7 (41...Bb8!? 42.e4-+) 42.Ne4 f5 43.Nc3 b5 (43...b5 44.Ne5 Ne5 45.de5 a4-+) 0-1. Jimito100 (2075) - sisysorrita (2025), Rated Bullet game, lichess.org, 2020.

6.e3 Bb4

7.Nc3 Bc3 A) 8.Bc3 A1) 8...c5 9.d4 (9.Qh5 g6 10.Qe2 Nd7 11.e4 Be6 12.Nf3=; 9.f4 ef4 10.ef4 Nh6 11.Qh5 Nf7 12.d4=; 9.Qa4 Nd7 10.e4 Be6 11.Nf3 Ne7 12.Ba5=) 9...ed4 10.ed4 cd4 11.Qd4 Ne7 12.Ne2=; A2) 8...a6 9.ba6 Na6 10.d4 ed4 11.Qd4 c6 12.Ne2=; A3) 8...Nd7 9.d4 (9.Qc2 c5 10.bc6 Bc6 11.d4 ed4 12.Bd4=; 9.Qh5 g6 10.Qe2 Nb6 11.d4 Bc4 12.Qf3=) 9...Nh6 10.Qh5 Nf7 11.de5 fe5 12.Qe2=; A4) 8...Ne7 9.d4 (9.Qh5 Bf7 10.Qg4 0-0 11.d4 Nd5 12.Bd2=) 9...ed4 10.Bd4 c6 11.a4 Nd7 12.Rc1=; B) 8.dc3 B1) 8...Qd7 9.c4 (9.Qh5 Qf7 10.Qf7 Bf7 11.Nf3 Nd7 12.Be2=; 9.Qe2 Qf7 10.c4 Be6 11.Nf3 Nd7 12.Qc2=; 9.Qa4 c6 10.Rd1 Qf5 11.Ne2 Nd7 12.Ng3+=; 9.Nf3 Qf7 10.Rc1 Nd7 11.c4 Be4 12.Nd2=) 9...Be4 10.Ne2 Bd3 11.Qb3 e4 12.Nf4+=; B2) 8...a6 9.Qa4 (9.c4 Be6 10.Qd8 Kd8 11.Rd1 Kc8 12.a3=; 9.Qc2 c6 10.Rd1 Qa5 11.a4 Ne7 12.e4=) 9...c6 10.c4 cb5 11.cb5 Nd7 12.ba6=; B3) 8...c6 9.Qh5 (9.Qc2 Qc7 10.e4 Be6 11.Nf3 cb5 12.Bb5=; 9.Qe2 Nd7 10.e4 Be6 11.bc6 bc6 12.a3=; 9.f3 cb5 10.Bb5 Nc6 11.e4 Be6 12.Qa4+=) 9...g6 10.Qe2 a6 11.e4 Be6 12.a4=.

7.Nc3 Be6 A) 8.Nf3 A1) 8...Ne7 9.Qa4 (9.Be2 0-0 10.0-0 c5 11.Qc2 Nd7 12.a3=; 9.d4 e4 10.Nd2 f5 11.a3 Bc3 12.Bc3=; 9.Qc2 Nd7 10.a3 Bf5 11.e4 Bc3 12.dc3+=; 9.a3 Bc3 10.dc3 Nd7 11.Be2 Nc5 12.c4=) 9...Bc3 10.dc3 Nd7 11.Rd1 Qc8 12.Ba3+=; A2) 8...c5 9.Qc2 (9.Be2 Ne7 10.a3 Ba5 11.Ne4 Qb6 12.0-0=; 9.a3 Bc3 10.dc3 Nd7 11.Qa4 Nb6 12.Qc2+=) 9...a6 10.Bd3 ab5 11.Bb5 Bd7 12.Bd7+=; A3) 8...Nd7 9.a3 (9.d4 Ne7 10.de5 Ne5 11.Ne5 fe5 12.a3=) 9...Bc3 10.Bc3 Ne7 11.d4 Nd5 12.Rc1=; B) 8.Qf3 B1) 8...Qd7 9.Qh5 (9.Be2 c6 10.a3 Bc3 11.Bc3 Ne7 12.d4=; 9.a3 Ba5 10.Be2 c6 11.Rd1 cb5 12.Ne4=; 9.Rb1 c5 10.a3 Ba5 11.Qh5 Bf7 12.Qh4=; 9.Qe4 Ba5 10.Nf3 c6 11.Qa4 b6 12.d4=) 9...Bf7 10.Qh4 c5 11.a3 Ba5 12.Qa4=; B2) 8...c6 9.Rd1 (9.a3 Ba5 10.Rd1 Nh6 11.Qh5 Bf7 12.Qf3=; 9.Qe4 Ba5 10.Rd1 Ne7 11.Nf3 a6 12.ba6+=) 9...a6 10.a3 Bf8 11.ba6 Na6 12.d4=; C) 8.Qh5 g6 9.Qh4 (9.Qe2 Nd7 10.a3 Ba5 11.Nf3 Ne7 12.d4=) 9...c5 10.a3 Ba5 11.Nf3 g5 12.Qe4+=; D) 8.Qa4 Bd6 9.Nf3 (9.Bc4 Bc4 10.Qc4 Nd7 11.Nf3 a6 12.d4+=) 9...Nd7 10.d4 Bf5 11.Be2 Nb6 12.Qb3+=; E) 8.a3 E1) 8...Bd6 9.Nf3 (9.Qh5 g6 10.Qf3 c6 11.d4 ed4 12.ed4=; 9.Qf3 c6 10.Ne4 Ne7 11.Qh5 Bf7 12.Qg4+=; 9.d4 ed4 10.Qd4 Nd7 11.Nf3 Ne7 12.Bc4+=; 9.Ne4 Ne7 10.d4 Nd7 11.Nf3 Ng6 12.Qc2+=) 9...Ne7 10.d4 Nd7 11.Bd3 Rc8 12.Ne4+=; E2) 8...Be7 9.Nf3 (9.d4 ed4 10.ed4 Nh6 11.Bd3 0-0 12.Qe2+=) 9...c5 10.d4 ed4 11.ed4 Nh6 12.dc5+=; E3) 8...Bf8 9.Nf3 Bd6 10.d4 Nd7 11.Bd3 Ne7 12.Ne4+=; E4) 8...Ba5 9.Nf3 (9.Qh5 g6 10.Qf3 c6 11.Rd1 a6 12.bc6=; 9.Qc2 a6 10.Nf3 ab5 11.Bb5 c6 12.Be2+=) 9...Ne7 10.d4 Nd7 11.Bd3 c5 12.de5+=.

7.Nc3 Nh6 8.Nd5 Qd5 9.Qc2 (9.Rc1 Bd6 10.Qf3 e4 11.Qh3 Nd7 12.Bc4+=) 9...Nf7 (9...a6 10.a3 Ba5 11.ba6 Na6 12.Nf3=) 10.Nf3 c6 (10...Nd6 11.Qc7 Nd7 12.Qc2+=) 11.Bc4 Qd7 12.Qb3 Bd6 (12...c5 13.a3 Ba5 14.Bc3 Bc3 15.dc3+/–) 13.d4+/– ed4 14.Nd4 Nd8 (14...Ng5 15.Rd1+/–) 15.Rd1 a5 (15...a6!? 16.b6 Qg4+/–) 16.0-0 a4 (16...g6 17.Rd2+-) 17.Qc2 g6 18.bc6 (18.bc6 bc6 19.Nb5 cb5 20.Qe4 Kf8 21.Qa8 bc4 22.Bf6+-) 1–0. Woschkat,Karl_Heinz – Morrison,John F, IECG, 1998.

4.d4 Bb4

5.Bc3 c5 6.Bb4 cb4 7.c3 Qd6 8.Qd2 a5 9.e3 Ne7 10.de5 fe5 (< 10...Qe5 11.Nf3 bc3 12.Nc3+/–) 11.cb4 ab4 12.Nf3 Bg4 13.Be2 b3 14.a4 0-0 15.a5 Qc5 16.Nc3 Bf3 17.Bf3 d4 18.ed4 (18.Bb7 dc3 19.Qd3 b2–+).

5.Nd2 ed4 6.Bd4 Ne7. Dlugolecki,Grzegorz – Profeta,Giuliano, Eclipse1 email, 2000.

5.Nd2 e4 6.e3 Be6 7.a3 Ba5 8.Ne2 Qd7 9.Nf4 a6 10.Ne6 Qe6 11.ba6 Na6 12.c3 c6 13.Qb3 Qd7 14.Be2 f5 =.

5.c3 Ba5

6.a4 ed4 7.Qd4 a6 8.Qe3 (8.e3 Bf5+=) 8...Ne7 9.Nf3 0-0 10.Qd2 Nd7 11.Ba3 Ne5 (11...Nb6!?+=) 12.Ne5= fe5 13.Be7 Qe7 14.Qd5 Be6 15.Qe5 (15.Qb7?? Qc5 16.f3 Bd5 17.Qa8 Ba8–+) 15...Rad8 16.e3?? (16.Qg3 Qf6 17.e4–+) 16...Rd1!!–+ 17.Kd1 Bb3 (17...Bb3 18.Ke2 Qe5–+) 0–1. Tiedemann,Joern (2125) – Stolz,Peter (2325), RSX – Senioren–1, 2007.

6.de5 fe5

7.Nf3 e4+= 8.Qa4 A) 8...c5 9.bc6 (9.Ne5 Nd7 10.Ng4 Ngf6 11.Nf6 Nf6 12.Nd2–/+) 9...Nc6 10.Nd4 Qb6 11.Nb5 e3 12.fe3+=; B) 8...c6 9.Nd4 Bd7 10.Nb3 Bb6 11.c4 Nf6 12.e3=; C) 8...Bb6 9.Nd4 e3 10.f4 Ne7 11.g3 c5 12.Nc2+=.

7.Nf3 e4+= 8.Nfd2 A) 8...Ne7 9.Nb3 (9.e3 0-0 10.Nb3 c6 11.Na5 Qa5 12.Ba3+=) 9...c6 10.e3 0-0 11.Na5 Qa5 12.Ba3+=; B) 8...Qh4 9.e3 (9.g3 Qf6 10.Qb3 Qe5 11.e3 c5 12.bc6=; 9.Nb3 e3 10.Qd5 ef2 11.Kd1 Bb6 12.Qe5+=) 9...Nf6 10.Qa4 b6 11.c4 0-0 12.cd5=; C) 8...Nf6 9.Nb3 (9.e3 0-0 10.Ba3 Rf7 11.Be2 c6 12.bc6+=; 9.Qa4 Bb6 10.e3 Ng4 11.h3 Qh4 12.g3–/+) 9...Bb6 10.e3 0-0 11.Be2 a6 12.c4+=.

7.Nf3 e4+= 8.Nd4 e3 (8...Nf6 9.e3 (9.Qa4 b6 10.Nb3 a6 11.ba6 Bd7 12.Qd4+=) 9...0-0 10.Be2 c5 11.Nb3 c4 12.Na5+=; 8...Ne7 9.Nb3 (9.e3 0-0 10.Nb3 c6 11.Na5 Qa5 12.Ba3+=) 9...c6 10.e3 0-0 11.Na5 Qa5 12.Qd2=) 9.fe3 (9.f3 c5 (9...a6+= 10.Qd3 Ne7 11.ba6 Na6 12.Qe3=) 10.Nb3 Bb6 11.Bc1 c4 12.Nd4+=; 9.f4 Nf6 10.Qa4 Bb6 11.c4 0-0 12.g3+=) 9...Nf6 (9...Qh4 10.g3 Qe4 11.Nf3+= Nf6 12.Bg2+=) 10.Nd2 (10.Qa4 Bb6 11.c4 Ne4 12.g3+=) 10...c5 11.N4b3 (11.bc6 Nc6 12.Nc6+=) 11...0-0 (11...c4 12.Na5 Qa5 13.e4 Qb5 14.Qc2+=) 12.Na5 (12.e4!? Bb6 13.ed5 Nd5 14.Nf3=) 12...Qa5+= 13.a4 (13.Qb3 c4 14.Qb4 Qb4 15.cb4 Ng4+=) 13...Ng4–/+ 14.Qc1 Nf2 (14...Ne3? 15.Nb3 Qd8 16.Qe3+-) 15.Rg1 Be6 16.Nf3 (16.g3!?+=) 16...Ne4–/+ 17.g3 Nd7 18.Nd2 Nd2 19.Qd2 Ne5 20.Bg2 Nc4 21.Qc2 Ne3 (21...Nb2?! 22.Qb2 a6 23.Qd2+=) 22.Qd3 d4 23.Bb7 Bf5 24.Bd5 Kh8 25.Be4 (25.Qe3 de3 26.Ba8 Ra8 27.Rf1–+) 25...Be4 26.Qe4 Rad8 (26...Rad8 27.Qf3 dc3–+; 26...dc3 27.Bc1 Rae8 28.Qe3 Re3 29.Be3–+) 0–1. Jonsson,Gudbrandur – Bonetti,Shane, TT–11 ETC, 2003.

7.Nf3 e4+= 8.Ne5 Qd6 (8...Qe7 9.Qa4 Qe5 10.Qa5 Nf6 11.e3 0-0 12.h3+=) 9.f4 (9.Qa4 Bb6 10.c4 d4 11.f4 Nf6 12.Nd2–/+) 9...ef3 10.Nf3 Nf6 11.Qa4 Bb6 12.c4+=.

7.e4 Nf6

8.ed5 Bb6 9.Ba3 Qd5 A) 10.Nd2 Bf5 (10...Be6 11.Qf3 a6 12.ba6 e4 13.Qg3 Ng4=; 10...a6 11.ba6 Na6 12.Nc4 Bc5 13.Qd5 Nd5=; 10...e4 11.Nc4 Bg4 12.Qd5 Nd5 13.h3 Be6=) 11.f3 Qf7 12.Bc4 Qg6 13.Qe2 Nbd7+=; B) 10.Qd5 Nd5 11.Bc4 Nf4 12.g3 Be6 13.Be6 Ne6+=.

8.ed5 Bb6 9.Bc4 e4 10.h3 (10.Nd2 0-0 (10...a6 11.Qa4 0-0 12.Ne2 Ra7 13.d6 Kh8=; 10...Qd6 11.Bb3 Bc5 12.Qe2 0-0 13.Nc4 Qd8+=; 10...Bf5 11.Qe2 0-0 12.Ba3 Re8 13.Nf1 Nd5=; 10...Nbd7 11.Qe2 0-0 12.d6 Kh8 13.dc7 Qc7=) 11.Ba3 Re8 12.Nb3 Ng4 13.Bc5 Nf2+=; 10.Qe2 Bf5 (10...0-0 11.Ba3 Re8 12.d6 Kh8 13.dc7 Qc7+=; 10...Nbd7 11.Nf3 0-0 12.Ng5 Nc5 13.Ne6 Be6+=) 11.Nd2 0-0 12.0-0-0 a6 13.Ba3 Re8+=) 10...Nbd7 (10...a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 c6=) 11.Ba3 (11.Nd2 Ne5= 12.Qe2 0-0 13.0-0-0 Qd6+=) 11...Ne5+= 12.Nd2 Bf5 (12...Nc4 13.Nc4 Qd5+=) 13.Qb3 Nfd7 (13...Qd7=) 14.0-0-0? (14.Rh2!?=) 14...Bf2 (14...Nc4 15.Nc4 Qg5 16.Kb2 Qg2 17.Ne2–+) 15.g4 Bg6 (15...Nc4 16.Qc4 (16.gf5? Na3 17.Qa3 Nc5–+) 16...Ne5 17.Qe2 Qd5 18.Nb1 Nd3 19.Rd3 Qd3 20.Qd3 ed3 21.gf5+=) 16.Be2 Nc5 17.Bc5 Bc5 18.Kb2 Qh4 19.d6 (19.Nc4!? Nf7 20.Qa4–/+) 19...Bd6–+ 20.Nc4 (20.Qa4 Qg3 21.b6 Ke7–+) 20...Nc4 21.Bc4 0-0-0 22.Ne2 Qf2 23.a4 h5 24.Rhf1 Qg2 25.a5 (25.Rg1 Qh3 26.gh5 Qh5–+) 25...Kb8 (25...Qh3 26.gh5 Qh5 27.a6–+) 26.b6 cb6 27.ab6 a6 (worse is 27...hg4 28.ba7 Ka7 29.Qb5–/+; 27...Qh3?! 28.ba7 Ka8 29.Qb6=) 28.Rg1 (28.gh5 Bh5 (28...Rh5?? 29.Rd6 Rhh8 30.Rd8 Rd8 31.Rg1 Qh3 32.Rg6+-) 29.Rg1 Qf2–+) 28...Qh3 29.Ba6 (29.gh5 Bh5 30.Rg7 Be5–+) 29...Qe3 (29...ba6 30.Qc4 Qh2 31.Qa6 Qe2 32.Qe2 hg4+-) 30.Nd4 Bc5 31.Rge1 Qf2 (31...Bd4 32.Re3 Be3 33.Be2+/–) 32.Be2 Rd4 (32...Rd4 33.cd4 Bd4 34.Ka3 hg4–+) 0–1. Bonetti,Shane – Woelfelschneider,Peter, TT–13 ETC, 2004.

8.ed5 Bb6 9.Bc4 Ng4!? 10.Nh3 Qh4= 11.0-0 Nf6 12.Qd3 e4 13.Qg3 Qg3+=.

8.ed5 Bb6 9.Nd2 Ng4 10.Nh3 (10.Ne4 0-0= 11.Nh3 Nf6 12.Neg5 Nd5 13.Bc4 c6=) 10...0-0 (10...Nf6 11.Qf3 Bg4 12.Qg3 Qd5 13.f3 Bh3=) 11.Ne4 Nf6 12.Neg5 Nd5 13.Bc4 c6=.

8.ed5 Bb6 9.Qe2 Qd5 (9...Ng4 10.Nh3 0-0 11.f3 Ne3 12.Nf2 Bf5 13.Na3 Qd5+=) 10.c4 Qc5 (10...Qe6 11.Nf3 e4 12.Nd4 Qe7 13.Nb3 Nbd7=; 10...Qe4 11.Nf3 Qe2 12.Be2 e4 13.Nfd2 Nbd7=) 11.Be5 0-0 12.f4 Ng4 13.Nf3 Ne5–/+.

5.c3 Bd6

6.e3 Bf5 7.c4 ed4 8.Bd4 =.

6.de5 Be5

7.Nf3 Bf5 8.Ba3 A) 8...Qd7 A1) 9.e4 Be4 10.Ne5 fe5 11.Qh5 Kd8 12.Qe5 Nf6–/+; A2) 9.e3 a6 (9...c6 10.Ne5 fe5 11.Nd2 cb5 12.Nf3 a6=; 9...Qf7 10.Ne5 fe5 11.Nd2 Nd7 12.c4 Ngf6=; 9...Nh6 10.Ne5 fe5 11.c4 dc4 12.Qh5 Qf7=) 10.ba6 Na6 11.Qb3 c6 12.Nbd2 b5=; A3) 9.Ne5 fe5 10.Nd2 a6 11.ba6 Ra6 12.Bb4 Rg6=; B) 8...Bb1 9.Ne5 Be4 10.Nd3 a6 11.ba6 Ra6 12.Bb4 b6=.

7.Nf3 Bf5 8.e3 A) 8...c6 9.Ne5 fe5 10.c4 Qd6 11.f4 Nd7 12.fe5 Qe6+=; B) 8...Bg4 B1) 9.Bd3 Nd7 (9...Ne7 10.Nbd2 Nd7 11.Qc2 g6 12.Ne5 Ne5+=; 9...Qd6 10.Qc2 Bf3 11.gf3 g5 12.Bh7 Ne7+=; 9...Nh6 10.h3 Bh5 11.Nbd2 Nf7 12.Qc2 Qd7+=; 9...c6 10.0-0 cb5 11.Bb5 Nc6 12.h3 Bf3=) 10.h3 Bh5 11.Ba3 Ne7 12.0-0 c6=; B2) 9.h3 Bf3 (9...Bh5 10.g4 Bf7 11.Ne5 fe5 12.c4 Qd6+=) 10.Qf3 a6 11.Qg4 Qd7 12.Qd7 Nd7=; B3) 9.Be2 Bf3 (9...Ne7 10.Ne5 Be2 11.Qe2 fe5 12.c4 Nd7+=; 9...Qd6 10.Ne5 Be2 11.Qe2 fe5 12.Qg4 Kf7=) 10.Bf3 c6 11.bc6 bc6 12.e4 de4=; B4) 9.Nbd2 Qd6 (9...Ne7 10.Bd3 Nd7 11.Qc2 g6 12.Ne5 Ne5+=; 9...Nd7 10.Be2 Qe7 11.0-0 Nh6 12.Ne5 Ne5=; 9...Nh6 10.Qc2 Bf5 11.Bd3 Bd3 12.Qd3 Nf7+=; 9...a6 10.Qa4 Nh6 11.Ne5 fe5 12.ba6 Nc6+/–) 10.Qa4 Bf3 11.Nf3 Nd7 12.Ne5 fe5=; C) 8...Qd6 9.Nh4 (9.Ne5) 9...Bb1 10.Rb1 Qe6 11.c4 Ne7 12.cd5 Qd5+=; D) 8...c5 D1) 9.Ne5 fe5 10.c4 d4 11.Qh5 g6 12.Qf3 Qb6=; D2) 9.Nbd2 Nd7 (9...Ne7 10.Ne5 fe5 11.e4 de4 12.Qh5 g6+=; 9...Qc7 10.Ne5 fe5 11.Qf3 Be6 12.c4 d4+=; 9...Bg4 10.Qc2 Nd7 11.Ne5 fe5 12.c4 d4+=; 9...a6 10.Ne5 fe5 11.Qf3 Ne7 12.c4 d4+=) 10.Be2 Ne7 11.Ne5 Ne5 12.c4 Nd3=; D3) 9.Nh4 Be6 10.Nf3 Nd7 11.Be2 Ne7 12.Ne5 fe5+=; D4) 9.Bd3 Bd3 (9...Ne7 10.Bf5 Nf5 11.Ne5 fe5 12.c4 d4=) 10.Qd3 c4 11.Qd1 Ne7 12.Ba3 Ng6=; D5) 9.Ba3 Bb1 (9...Qa5 10.Ne5 Bb1 11.Bb2 Ne7 12.Rb1 fe5=; 9...b6 10.Ne5 fe5 11.c4 Nf6 12.cd5 Qd5+=; 9...Qd6 10.Ne5 fe5 11.c4 Qc7 12.Nc3 Qa5+=) 10.Ne5 Bf5 11.Nf3 Qa5 12.Bb2 Ne7=.

7.Nf3 Bf5 8.e4 de4 9.Qd8 (9.Ne5 Qd1 10.Kd1 fe5 11.c4 Nd7 12.Ke1 Ngf6+=) 9...Kd8 10.Ne5 fe5 11.Na3 Nf6 12.Rd1 Kc8+=.

7.Nf3 Bf5 8.Ne5 fe5 9.e4 (9.e3 c5 10.c4 d4 11.Nd2 Nf6 12.Qf3 Qd7=; 9.c4 d4 10.e4 Bg6 11.Bd3 Nd7 12.0-0 Qh4=; 9.Nd2 Nf6 10.e3 Bg4 11.f3 Be6 12.c4 Nbd7=; 9.a3 Nf6 10.e3 c5 11.c4 d4 12.ed4 cd4+=) 9...de4 10.Qd8 Kd8 11.c4 (11.Na3 Nf6 12.Nc4 Nbd7=) 11...Nd7 12.Be2 (12.h3 Ngf6+=) 12...Ngf6 (12...a6+=) 13.0-0 Kc8 14.Rd1 Rd8 15.Nc3 a6 16.a4 ab5 17.ab5 Ra1 18.Ra1 Kb8 (18...Nc5 19.Ra8 Kd7 20.Rd8 Kd8 21.Ba3+=) 19.Nd1 Bg4 20.Bg4 Ng4 21.h3 Ngf6 22.Ne3 c6 23.bc6 bc6 24.Nf5 g6 25.Nd6 Kc7 26.Nf7 Re8 (26...Rb8 27.Be5 Ne5 28.Ne5=) 27.Bc3= c5 28.Ba5 Nb6 29.Rd1 Nfd7 (better is 29...Re6!?=) 30.Rd7!+/– Kd7 31.Bb6 Re7 32.Ng5 e3 33.fe3 e4 34.h4 h6 35.Bc5 Re8 (35...hg5 36.Be7 Ke7 37.Kh2 (worse is 37.hg5 Kd6 38.Kf2 Kc5+-) 37...gh4 38.Kh3+-) 36.Nf7 Rc8 37.Ne5 Ke6 38.Bd4 1–0. Rosner,Dirk – Reynolds,Garry, 10th–An MecPom, 2000.

7.Nf3 Bg4 8.Ne5 fe5 9.h3 Bf5 10.e4 de4 11.Qd8 Kd8 12.Nd2 a6 13.g4 Bg6 14.ba6 Na6 =.

5.c3 Be7

6.e3= Bf5 7.Be2 (7.c4 Bb1 8.Qb1 Bb4 9.Kd1 Ne7=) 7...Nh6 (7...Nd7 8.c4 dc4 9.Nd2=) 8.Bd3 (8.de5!? fe5 9.c4 Bb4 10.Kf1+=) 8...0-0 (8...c6 9.c4+=) 9.Ne2 (9.c4 ed4 10.Bd4 Bb4 11.Bc3 Bc3 12.Nc3 d4 13.Bf5 Nf5 (worse is 13...dc3 14.Be6 Kh8 15.Qd8 Rd8 16.Ne2+/–) 14.ed4 Re8 15.Kf1 Nd4= (worse is 15...Qd4 16.Qd4 Nd4 17.Nd5+/–)) 9...Nd7 (9...e4 10.Bc2+=) 10.0-0 (10.Bf5 Nf5 11.de5 Ne5+=) 10...Nb6 11.Bf5 (11.Ba3 Ba3 12.Na3 a6+=) 11...Nf5 12.Nd2 (12.Qb3 Nd6+=) 12...Qd7 (12...Nd6 13.Qb3–/+) 13.a4+= c6 (13...e4 14.Qc2=) 14.bc6 (14.a5 Nc8 15.de5 fe5=) 14...Qc6+= 15.Qc2 (15.Qb3+=) 15...Qd7 (15...Nd6 16.Ba3+=) 16.Rfd1 (16.a5 Nc4 17.Nc4 dc4+=) 16...Rac8 (16...Nd6+=) 17.Ng3 (better is 17.a5 Na8 18.Qb3 ed4 19.e4+/– (worse is 19.ed4 Rfe8=)) 17...Ng3–/+ 18.fg3 Qc6 (18...Nc4 19.Nc4 Rc4 20.de5 fe5–/+) 19.Qd3? (better is 19.a5!? Nc4 20.Nc4 Qc4 21.Qf5+=) 19...Na4–+ 20.Rdb1 e4 (20...Nc3?! 21.Bc3 Qc3 22.Qc3 Rc3 23.Rb7+=) 21.Qc2 Nb2 (better is 21...b5!?–+) 22.Qb2+= a6 (22...f5 23.Ra7 Bg5+=) 23.Rc1 (23.Qb7!? Rc7 24.Qc6 Rc6 25.Rb7=) 23...b5 (23...f5–/+) 24.Nb3 (better is 24.Qa2!?–/+) 24...Qe6 (24...f5 25.Qa2 Rc7 26.Qa6 Qa6 27.Ra6–+) 25.Rf1 (25.Qf2 Rc4–+) 25...Rfd8 (25...f5 26.Qd2–+) 26.Ra5 (better is 26.Nc1–+) 26...Rf8 27.Raa1 Rfd8 (27...f5 28.Ra5–+) 28.Ra5 Qb6 (28...Qc6 29.Rc1–+) 29.Qa2 Rc3 (29...Qc6 30.Rc1 Ra8 31.Qf2–+) 30.Ra6 Qc7 (better is 30...Qb8!?–+) 31.Ra7+= Qc4 (better is 31...Qd6 32.Nc5 Rc5 (32...Re3 33.Nb7 Ra3 34.Ra3 Qa3 35.Qa3 Ba3 36.Nd8+-) 33.dc5 Qc5+=) 32.Re7+/– Qb3?? (32...Qd3 33.Re1 Kh8+-) 33.Qa7+- Re3 (33...Kh8 34.Rg7 Rc7 35.Qc7 Qe3 36.Kh1 Qh6+-) 34.Rg7 Kh8 35.Rh7 Kg8 36.Qg7 1–0. Neffgen,Dieter (1840) – Schlagner,Andreas (1780), RSS4E easy–7, 2003.

6.de5 fe5 7.e3 Nf6 8.c4 0-0 (8...Bb4 9.Bc3 Bc3 10.Nc3=+) 9.Be2 (better is 9.cd5!? Qd5 10.Qd5 Nd5 11.Bc4+=) 9...Bb4 –/+.

6.de5 fe5 7.e4 Nf6 8.ed5 a6 (8...Qd5!? 9.Qd5 Nd5=) 9.ba6 Na6 10.Bb5 Bd7 11.Bd7 Qd7 12.c4 0-0 13.Be5 Ng4 (13...Ne4 14.d6 Nd6 15.Qd5 Rf7 16.Nf3+=) 14.Bd4 Bc5 15.Nf3 Qd6 (15...Rae8 16.Kf1+=) 16.Nc3 Bd4 (16...Rae8 17.Ne2+/–) 17.Qd4 (17.Nd4 Nf2 18.Ndb5 Qd7–+ (18...Nd1 19.Nd6 Nc3 20.Nb7–+)) 17...Rf4 18.Qd3 (18.Ne4!? Qb4 19.Kf1+/–) 18...Re8 +=.

4.d4 ed4

5.Bd4 Bb4 A) 6.Nd2 c5 7.Bb2 (7.bc6 Nc6 8.c3 Nd4 9.cd4 Qa5 10.e3+=) 7...Ne7 8.e3 0-0 9.c3 Ba5 10.Ngf3=; B) 6.c3 B1) 6...Be7 7.e3 (7.Nd2 c5 8.bc6 Nc6 9.e3 Bf5 10.Ngf3=; 7.Nf3 a6 8.Qa4 c6 9.bc6 Nc6 10.e3=; 7.Qd3 c5 8.bc6 Nc6 9.Nf3 Bd6 10.e3=) 7...c5 8.bc6 bc6 9.c4 Be6 10.cd5=; B2) 6...Bf8 7.e3 (7.Nd2; 7.Nf3) 7...Bf5 8.Nf3 a6 9.Qb3 Ne7 10.Be2=; B3) 6...Bd6 7.Nd2 (7.e3 Bf5 8.c4 Ne7 9.c5 Be5 10.Nf3=) 7...Bf5 8.Ngf3 Ne7 9.e3 a6 10.c4=.

5.Bd4 Bd6 A) 6.Nc3 c5 7.bc6 bc6 8.e4 Qe7 9.Qh5 g6 10.Qh4+=; B) 6.Nf3 B1) 6...c5 7.Bb2 (7.Bc3 Ne7 8.e3 0-0 9.Be2 a6 10.a4=; 7.bc6 Nc6 8.e3 Nge7 9.Bd3 0-0 10.Nbd2=) 7...Ne7 8.e3 0-0 9.c4 Be6 10.Nc3=; B2) 6...c6 7.e3 (7.bc6 Nc6 8.e3 Nge7 9.Bd3 0-0 10.Nbd2=; 7.Nbd2 Ne7 8.e4 0-0 9.c3 Be6 10.Be2+=) 7...Ne7 8.Be2 a6 9.a4 Nf5 10.0-0=; B3) 6...Bg4 7.e3 (7.Nc3 Ne7 8.e3 c5 9.bc6 Nbc6 10.Rb1+=; 7.h3 Bf3 8.ef3 Ne7 9.Be2 c5 10.Bc3+=) 7...c5 8.Bc3 Ne7 9.Be2 a6 10.a4=; B4) 6...a6 7.e3 (7.Nc3 Bb4 8.Rb1 Qd6 9.a4 ab5 10.ab5+=; 7.Nbd2 ab5 8.e4 Qe7 9.Qe2 c5 10.Bb2+=) 7...ab5 8.Bb5 c6 9.Bd3 Ne7 10.0-0=; B5) 6...Ne7 7.e3 (7.Nc3 c5 8.bc6 bc6 9.e4 Bb4 10.a3+=; 7.Nbd2 0-0 8.e3 c5 9.bc6 bc6 10.Be2=; 7.a3 c5 8.bc6 bc6 9.e3 0-0 10.c4+=) 7...c5 8.bc6 Nbc6 9.Bd3 0-0 10.Nbd2=; C) 6.e3 C1) 6...Bf5 7.Bd3 (7.Nc3 Ne7 8.Bd3 Bd3 9.cd3 c5 10.bc6=; 7.Nf3 Ne7 8.Bd3 a6 9.Nc3 ab5 10.Nb5=; 7.Be2 c5 8.Bb2 Ne7 9.Bh5 g6 10.Be2=; 7.c4 Ne7 8.c5 Be5 9.Nf3 Nd7 10.Be2=) 7...Bd3 8.cd3 c5 9.bc6 Nc6 10.Nf3=; C2) 6...Nh6 7.Qh5 Nf7 8.c4 Be6 9.cd5 Bd5 10.Nc3=; C3) 6...a6 7.c4 (7.Nc3 Be6 8.Nf3 c6 9.bc6 Nc6 10.Be2=) 7...dc4 8.Bc4 ab5 9.Qh5 g6 10.Qb5=; C4) 6...Ne7 7.Qh5 g6 8.Qh4 Nd7 9.Bf6 Nf6 10.Qf6=; C5) 6...c5 7.Bc3 (7.Bb2 Be6 8.Nf3 Ne7 9.Be2 Qa5 10.Nc3=; 7.bc6 Nc6 8.Nf3 Bg4 9.Nbd2 Nd4 10.ed4=) 7...Be6 8.Nf3 Ne7 9.Be2 a6 10.a4=.

5.Bd4 Be6 A) 6.Nf3 A1) 6...Bb4 7.Bc3 (7.c3 Bd6 8.e3 c6 9.bc6 bc6 10.Bd3=; 7.Nbd2 a6 8.c3 Bd6 9.e4 Ne7 10.ed5=) 7...Bd6 8.e3 Qd7 9.Bd3 a6 10.a4=; A2) 6...Nh6 7.Nbd2 (7.e3 a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=) 7...a6 8.e3 Bd6 9.c4 dc4 10.Qa4=; A3) 6...Bd7 7.e3 a6 8.a4 ab5 9.ab5 Bb4 10.Nbd2+=; A4) 6...Kf7 7.Nbd2 Bd6 8.e4 c5 9.ed5 Bd5 10.Be3=; A5) 6...a6 7.e3 (7.ba6 Na6 8.e3 Bd6 9.Nbd2 Ne7 10.Be2+=; 7.Qd3 Nd7 8.e3 Bb4 9.Nbd2 ab5 10.Qb5=) 7...Bb4 8.c3 Bd6 9.Bd3 Ne7 10.Qb3=; B) 6.Nc3 B1) 6...Ne7 7.e3 (7.Nf3 Nf5 8.e3 c6 9.bc6 Nc6 10.Rb1=; 7.Qd3 Nf5 8.Nf3 c5 9.bc6 Nc6 10.Rb1+=; 7.e4 de4 8.Ne4 Nf5 9.Nf3 Qd5 10.Qd3+=; 7.Bc5 b6 8.Bd4 a6 9.e4 c5 10.bc6+=) 7...Nf5 8.Nf3 a6 9.Qb1 Bc8 10.Qb3=; B2) 6...Nh6 7.Nf3 (7.e4 de4 8.Ne4 Nf5 9.Nf3 Qd5 10.Qd3+=; 7.Qd3 c5 8.bc6 Nc6 9.e3 Bb4 10.Rb1+=; 7.a3 Nf5 8.e3 Nd4 9.Qd4 c6 10.Qa4+=; 7.e3 Nf5 8.Nf3 c5 9.bc6 Nc6 10.Rb1=) 7...Nf5 8.e3 c6 9.bc6 Nc6 10.Rb1=; B3) 6...c6 7.bc6 Nc6 8.Rb1 Bb4 9.e3 Qa5 10.Rb3+=; B4) 6...a6 7.Qb1 (7.Qd3 Bb4 8.Rb1 c5 9.bc6 Nc6 10.a3+=; 7.e4 de4 8.Ne4 Qd5 9.Nc3 Bb4 10.Qd2+=; 7.a4 ab5 8.ab5 Ra1 9.Qa1 c5 10.bc6+=; 7.e3 ab5 8.e4 c5 9.Bb5 Bd7 10.ed5–/+) 7...c5 8.bc6 Nc6 9.Bb6 Qd7 10.e3=; B5) 6...c5 7.bc6 Nc6 8.Rb1 Bb4 9.e3 Qa5 10.Rb3+=; C) 6.Nd2 C1) 6...Qd7 7.e4 (7.e3 a6 8.a4 Bd6 9.Ngf3 Ne7 10.Bd3=; 7.Rb1) 7...c5 8.ed5 Qd5 9.Be3 Nd7 10.Ngf3=; C2) 6...a6 7.a4 (7.e4 ab5 8.Bb5 c6 9.Be2 de4 10.Ne4=; 7.e3 ab5 8.Bb5 c6 9.Bd3 c5 10.Bb2=) 7...Bd6 8.Ngf3 Ne7 9.e3 0-0 10.Bd3=; C3) 6...Ne7 7.e3 (7.Ngf3 Nf5 8.e3 a6 9.Bd3 ab5 10.Bb5=) 7...Nf5 8.Ngf3 a6 9.Bd3 ab5 10.Bb5=; C4) 6...Bd6 7.e4 (7.Ngf3 Ne7 8.e3 a6 9.Nb3 Nf5 10.Nc5+=; 7.e3 Ne7 8.Bd3 a6 9.Qb1 b6 10.c4=) 7...c5 8.ed5 Bd5 9.c4 cd4 10.cd5=; C5) 6...Nh6 7.e3 (7.Ngf3 a6 8.e3 Bd6 9.Bd3 ab5 10.Bb5=; 7.e4 de4 8.Ne4 Nf5 9.Nf3 Qd5 10.Qd3+=) 7...Bd6 8.Bd3 a6 9.Ngf3 ab5 10.Bb5=; D) 6.e3 D1) 6...a6 7.Nf3 (7.Ne2 Bd6 8.Nf4 Bf4 9.ef4 Qe7 10.Be2=; 7.Nd2 ab5 8.Bb5 c6 9.Bd3 c5 10.Bb2=) 7...Nh6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; D2) 6...Nh6 7.Be2 (7.Bd3 a6 8.Nf3 ab5 9.Bb5 c6 10.Bd3=; 7.Nf3 a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; 7.Nd2 Bd6 8.Ngf3 a6 9.Bd3 ab5 10.Bb5=) 7...Bd6 8.Nf3 a6 9.Nc3 ab5 10.Nb5=; D3) 6...c6 7.Ne2 (7.bc6 bc6 8.Nf3 Bd6 9.Bd3 Ne7 10.Bb2=; 7.Nf3 c5 8.Bb2 Qa5 9.Bc3 Qa4 10.Be2=) 7...a6 8.Nf4 Bf5 9.bc6 Nc6 10.Bc3+=; D4) 6...Bb4 7.Nd2 (7.c3 Bd6 8.Bd3 Ne7 9.Nf3 a6 10.Qb3=; 7.Bc3 Bd6 8.Nf3 Ne7 9.Nd4 Qd7 10.Bd3=) 7...Ne7 8.Ngf3 Nd7 9.Bd3 Nc5 10.0-0=; D5) 6...c5 7.bc6 (7.Bb2 Bd6 8.Nf3 Ne7 9.Be2 0-0 10.0-0=; 7.Bc3 Bd6 8.Nf3 Ne7 9.Be2 0-0 10.0-0=) 7...bc6 8.Nf3 Bd6 9.Bd3 Ne7 10.Bb2=.

5.Bd4 Ne7 A) 6.Nf3 A1) 6...Nf5 7.a3 (7.Bb2 a6 8.e3 Bb4 9.Bc3 Bc5 10.Bd3=; 7.Bc3 Be6 8.e3 a6 9.a4 ab5 10.ab5=; 7.e3 a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=) 7...Nd4 8.Nd4 Be7 9.e3 0-0 10.Qf3=; A2) 6...Bg4 7.e3 (7.Bc3 a6 8.e3 Qd7 9.a4 ab5 10.Bb5=; 7.c4 Nf5 8.e3 a6 9.ba6 Na6 10.cd5+=) 7...Nf5 8.Be2 a6 9.0-0 Bf3 10.Bf3=; A3) 6...a6 7.e3 (7.ba6 ba6 8.e3 c5 9.Bc3 Nbc6 10.Bd3=; 7.a4 Bg4 8.e3 Nf5 9.Be2 ab5 10.ab5=) 7...Nf5 8.Be2 ab5 9.Bb5 c6 10.Bd3=; B) 6.Nc3 Nf5 7.e3 c6 8.bc6 Nc6 9.Nge2 Qa5 10.a3–/+; C) 6.Bc5 c6 7.Nd2 (7.a4 a6 8.Ra3 ab5 9.ab5 Ra3 10.Ba3–/+; 7.e3 a6 8.c4 Be6 9.Nd2 Qa5 10.cd5+=) 7...Nd7 8.Bd4 Nf5 9.Ngf3 Nd4 10.Nd4+=; D) 6.Bc3 D1) 6...Nd7 7.Nf3 Nc5 8.e3 Nf5 9.Be2 Be6 10.Nd4=; D2) 6...Bf5 7.e3 (7.Nf3 a6 8.e3 Qd7 9.Nd4 Bg4 10.Qd2=; 7.Bd4 Bg4 8.h3 Bh5 9.Nc3 a6 10.g4+=) 7...a6 8.Nf3 Qd7 9.Nd4 Bg4 10.Qd2=; D3) 6...Bg4 7.Nf3 (7.h3 Bh5 8.Nf3 Qd6 9.e3 Nd7 10.Be2=) 7...Ng6 8.e3 Nh4 9.Nbd2 Nf3 10.Nf3=; D4) 6...Nf5 7.e3 (7.Nf3 a6 8.e3 Bc5 9.Bd3 0-0 10.a4=) 7...Bc5 8.Bd3 a6 9.Nf3 ab5 10.Bb5=; D5) 6...Qd6 7.e3 (7.Nf3 Bg4 8.e3 a6 9.h3 Bh5 10.Nbd2=) 7...Nd7 8.Nf3 Ne5 9.Nbd2 Bf5 10.Bd4=; E) 6.Bb2 E1) 6...Nd7 7.Nf3 (7.Nc3 Ne5 8.e4 Be6 9.f4 Nf7 10.f5=; 7.e3 Nc5 8.Nf3 Bg4 9.Be2 Qd6 10.0-0=; 7.Nd2 Nc5 8.e3 Nf5 9.c4 d4 10.e4=; 7.a3 Ne5 8.e3 Bf5 9.Bd4 c6 10.Ra2+=) 7...Nc5 8.e3 Bg4 9.Be2 Qd6 10.0-0=; E2) 6...Bf5 7.e3 (7.Nf3 Qd6 8.e3 Nd7 9.Be2 0-0-0 10.0-0=; 7.Nd2 Qd7 8.e3 a6 9.a4 Ng6 10.Ngf3=; 7.Nc3 a6 8.e3 ab5 9.Bb5 c6 10.Bd3=) 7...Nd7 8.Nf3 a6 9.Nd4 Ne5 10.ba6=; E3) 6...Ng6 7.Nf3 (7.Nc3 d4 8.Nb1 Bb4 9.c3 Ba5 10.Nf3+=; 7.e3 a6 8.Nf3 Bb4 9.c3 Ba5 10.Bd3=; 7.Nd2 Bd6 8.c4 Be6 9.cd5 Bd5 10.e4+=; 7.a3 Bc5 8.Nf3 0-0 9.e3 a6 10.c4=) 7...Bb4 8.Bc3 Be7 9.e3 a6 10.Bd3=; E4) 6...Bg4 7.h3 (7.Nf3 Nd7 8.e3 Ne5 9.Be2 Qd6 10.Bd4=; 7.Nc3 c5 8.Qd2 Nd7 9.Nd5 Nd5 10.Qd5=; 7.c4 a6 8.h3 Be6 9.cd5 Nd5 10.e4+=; 7.Qd2 Nd7 8.e3 Ne5 9.Bd4 N7g6 10.Nc3+=) 7...Bf5 8.e3 a6 9.Nf3 ab5 10.Bb5=; E5) 6...Be6 7.Nd2 (7.Nf3 Nf5 8.e3 a6 9.Nc3 Bb4 10.a3=; 7.e3 a6 8.Nf3 Nf5 9.Nc3 Bb4 10.a3=) 7...d4 8.Nb3 Nf5 9.a3 c5 10.bc6=; F) 6.Nd2 F1) 6...Bg4 7.Ngf3 (7.f3 Be6 8.e4 de4 9.Ne4 Nf5 10.Bf2+=; 7.h3 Bh5 8.g4 Bg6 9.Ngf3 a6 10.e3=; 7.c3 Nf5 8.Ngf3 Nd4 9.cd4 Bf3 10.gf3=; 7.Nb3 Nd7 8.Rb1 Ng6 9.h3 Bf5 10.e3+=) 7...Nf5 8.h3 Nd4 9.Nd4 Bh5 10.Ne6=; F2) 6...Nf5 7.Bb2 (7.Ngf3 Nd4 8.Nd4 Bb4 9.e3 Bc3 10.Rb1+=; 7.e3 Nd4 8.ed4 Bf5 9.Be2 a6 10.Ngf3+=; 7.c3 a6 8.Qa4 Bd6 9.e4 de4 10.ba6+=) 7...Be6 8.e3 Bd6 9.Ngf3 0-0 10.Bd3=; G) 6.c3 G1) 6...Nf5 7.e3 (7.Nf3 a6 8.Qa4 c6 9.bc6 bc6 10.Nbd2=; 7.Nd2 a6 8.Qa4 Bd6 9.e3 c6 10.bc6+=) 7...a6 8.Qa4 Nd7 9.Nf3 Nd4 10.cd4=; G2) 6...Nd7 7.e3 Nf5 8.Nf3 a6 9.Qc2 Nd6 10.c4+=; H) 6.e3 Nf5 7.Bc3 (7.Nf3 a6 8.ba6 Na6 9.Bb5 c6 10.Bd3+=) 7...Bc5 8.Bd3 a6 9.Nf3 0-0 10.a4=.

5.Bd4 Bf5 A) 6.Nc3 c5 7.bc6 bc6 8.e4 de4 9.Nge2 Qa5 10.Qb1+=; B) 6.Nf3 B1) 6...Bb4 7.Bc3 (7.Nbd2 a6 8.e3 ab5 9.Bb5 c6 10.Bd3=; 7.c3 Bd6 8.e3 Ne7 9.Bd3 Qd7 10.c4=) 7...Bc5 8.e3 Nh6 9.Bd4 Bb4 10.c3=; B2) 6...c5 7.Bb2 (7.bc6 Nc6 8.e3 Rc8 9.Bd3 Bd3 10.cd3=; 7.Bc3 d4 8.Bd2 Ne7 9.e3 de3 10.Be3=) 7...Ne7 8.e3 Nd7 9.Be2 Qa5 10.Nc3=; B3) 6...a6 7.e3 Bd6 8.Nh4 Ne7 9.c4 Bb4 10.Bc3=; B4) 6...c6 7.e3 Bd6 8.c4 a6 9.cd5 ab5 10.Nbd2=; B5) 6...Bd6 7.e3 (7.Nbd2 Ne7 8.e3 0-0 9.Bd3 a6 10.Qb1=; 7.Nc3 c5 8.bc6 bc6 9.Rb1 Ne7 10.e4+=; 7.a3 Ne7 8.e3 0-0 9.c4 c5 10.Bb2=) 7...Ne7 8.Bd3 a6 9.Nc3 ab5 10.Nb5=; C) 6.Qd2 C1) 6...Nd7 7.e3 (7.Nc3 c5 8.bc6 bc6 9.Nd1 c5 10.Bc3+=; 7.Nf3 Nc5 8.Nc3 Ne4 9.Ne4 de4 10.Ng1+=; 7.a3 Bd6 8.e3 Ne7 9.Nc3 Ne5 10.f4+=) 7...Ne5 8.Be2 c5 9.bc6 bc6 10.Nf3=; C2) 6...c5 7.Bb2 (7.Qe3 Be4 8.Bc5 Qa5 9.c3 Bc5 10.Qc5+=) 7...Ne7 8.e3 Nd7 9.Nf3 Qc7 10.Nc3=; C3) 6...Bd6 7.e3 (7.Nf3 Nd7 8.e3 Ne7 9.Be2 a6 10.Nc3=; 7.Nc3 Ne7 8.Nf3 c5 9.bc6 bc6 10.Na4+=) 7...Ne7 8.Nf3 c5 9.Bb2 Nd7 10.Nc3=; C4) 6...c6 7.Ba7 (7.Nf3 a6 8.a4 Bd6 9.e3 ab5 10.ab5=; 7.e3 a6 8.bc6 Nc6 9.Bd3 Bd3 10.Qd3+=) 7...Bc2 8.Bb8 Bb1 9.Rb1 Rb8 10.e3=; C5) 6...a6 7.e3 ab5 8.Bb5 c6 9.Bd3 Be4 10.Nf3=; D) 6.e3 D1) 6...c5 7.Bb2 (7.bc6 Nc6 8.Nf3 Rc8 9.Bd3 Bb4 10.c3=; 7.Bc3 a6 8.Ne2 Bg4 9.ba6 Na6 10.h3=) 7...Ne7 8.Nf3 Nd7 9.Bd3 Bd3 10.cd3=; D2) 6...Nh6 7.Nf3 (7.Nd2 c5 8.bc6 Nc6 9.Ngf3 Nb4 10.Bb5=; 7.Nc3 c6 8.bc6 bc6 9.Qb1 Nd7 10.Qb7+=; 7.c4 dc4 8.Bc4 c5 9.bc6 Nc6 10.Nf3=; 7.Bd3 a6 8.Nc3 ab5 9.Qh5 g6 10.Qh4+=) 7...a6 8.Nbd2 Qd7 9.a4 ab5 10.ab5=; D3) 6...c6 7.Nf3 (7.bc6 Nc6 8.Nf3 Rc8 9.Bd3 Bd3 10.cd3=) 7...Bd6 8.c4 a6 9.cd5 ab5 10.Nbd2=; D4) 6...Bb4 7.Bc3 Bc5 8.Nf3 Bg4 9.Bd3 Nd7 10.h3=; D5) 6...Bd6 7.c4 (7.Nc3 Ne7 8.Rb1 c6 9.bc6 bc6 10.g4+=; 7.Nf3 Ne7 8.Bd3 a6 9.Nc3 ab5 10.Nb5=; 7.Bd3 Bd3 8.cd3 c5 9.bc6 Nc6 10.Nf3=; 7.Be2 c5 8.Bb2 Ne7 9.Bh5 g6 10.Be2=) 7...Ne7 8.c5 Be5 9.Nf3 Nd7 10.Be2=; E) 6.a3 c5 7.Bb2 Qa5 8.Bc3 Qa4 9.Qd5 Be4 10.Qe6=.

5.Bd4 Bg4 A) 6.Nc3 c5 7.bc6 Nc6 8.Rb1 Bb4 9.a3 Ba5 10.Rb3–/+; B) 6.h3 B1) 6...Be6 7.Nf3 (7.e3 a6 8.Nf3 Bb4 9.Nbd2 Qe7 10.c3=) 7...Bd6 8.e3 c5 9.bc6 bc6 10.Bd3=; B2) 6...Bf5 7.Nf3 (7.Nc3 c5 8.bc6 Nc6 9.e3 Qa5 10.a3–/+; 7.e3 Bd6 8.Bd3 Bd3 9.cd3 c6 10.bc6=) 7...a6 8.e3 Bd6 9.Nh4 Ne7 10.Bf6=; B3) 6...Bc8 7.Nf3 (7.e3 Nh6 8.Bd3 a6 9.Nf3 ab5 10.Bb5=; 7.Nc3 c5 8.bc6 Nc6 9.e3 Nge7 10.Rb1=; 7.Qd3 a6 8.e4 Ne7 9.Be2 ab5 10.Bh5=) 7...Bd7 8.e3 a6 9.ba6 Na6 10.Be2=; B4) 6...Bh5 7.Nd2 (7.g4 Bg6 8.e3 Bb4 9.Nd2 c5 10.Bb2+=; 7.Nf3 Nh6 8.Nc3 Bf3 9.ef3 Nf5 10.Qd3=; 7.Qd2 a6 8.e3 Bd6 9.c4 dc4 10.Bc4=; 7.Nc3 c5 8.bc6 Nc6 9.Rb1 Bb4 10.a3–/+) 7...a6 8.Qb1 c5 9.bc6 Nc6 10.Bb6=; C) 6.Qd3 C1) 6...Bb4 7.c3 Bd6 8.c4 Be6 9.cd5 Bd5 10.Nc3=; C2) 6...Be6 7.Nf3 (7.Ba7 Bb4 8.c3 Bd6 9.Bb8 Qb8 10.Nf3=) 7...Nd7 8.Nc3 Bb4 9.a3 Nc5 10.Qe3+=; C3) 6...Be7 7.Ba7 Nh6 8.Bd4 0-0 9.e3 Nd7 10.c4=; C4) 6...Nd7 7.c4 (7.e4 de4 8.Qe4 Qe7 9.Nc3 Qe4 10.Ne4=; 7.Nc3 c5 8.bc6 bc6 9.f3 Be6 10.e4=) 7...Be6 8.Nc3 Bb4 9.cd5 Bd5 10.Qg3=; C5) 6...a6 7.e4 (7.h3 Bd7 8.c4 dc4 9.Qc4 ab5 10.Qb3–/+; 7.e3 Qd7 8.Nc3 ab5 9.Qb5 Nc6 10.Rb1=; 7.Nf3 c6 8.bc6 Nc6 9.Nbd2 Rc8 10.a3+=; 7.Nc3 ab5 8.h3 Bc8 9.Nb5 Ne7 10.Nf3+=) 7...c5 8.Bb2 Ne7 9.Nd2 Qd7 10.a4=.

5.Bd4 Nh6 A) 6.Nf3 A1) 6...Bg4 7.e3 (7.Bc3 Bc5 8.e3 a6 9.h3 Bh5 10.g4=) 7...Nf5 8.Be2 a6 9.0-0 Bf3 10.Bf3=; A2) 6...a6 7.e3 (7.ba6 Na6 8.e3 Bf5 9.Bd3 Bd6 10.0-0=; 7.a4 ab5 8.ab5 Bb4 9.Nbd2 Ra1 10.Qa1=; 7.Nc3 ab5 8.Nb5 c6 9.Nc3 Qa5 10.Rb1–/+; 7.Nbd2 ab5 8.e4 de4 9.Ne4 b4 10.Bc4+=) 7...Nf5 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; A3) 6...c5 7.Bb2 (7.bc6 Nc6 8.e3 Bd6 9.Bd3 Qc7 10.Nbd2=) 7...Qa5 8.Bc3 Qb5 9.Qd5 Qd7 10.e4=; A4) 6...c6 7.e3 Bg4 8.h3 Bf5 9.Be2 Bb4 10.Nbd2=; A5) 6...Nf5 7.Bc3 (7.e3 a6 8.ba6 Na6 9.Bb5 c6 10.Bd3+=) 7...Be6 8.e3 a6 9.a4 Nd7 10.Be2=; B) 6.Nc3 Nf5 7.e3 (7.Rb1 c5 8.bc6 Nc6 9.Nf3 Bb4 10.Rb3–/+; 7.Nf3 c5 8.bc6 Nc6 9.Qd2 Qa5 10.Rb1–/+) 7...Bb4 8.a3 Ba5 9.Nf3 c5 10.bc6+=; C) 6.Bc3 C1) 6...Be6 7.e3 (7.Nf3 Bd6 8.Nd4 Qe7 9.Ne6 Qe6 10.e3+=; 7.Qd2 Bd6 8.Nf3 Nd7 9.e3 Nc5 10.Be2+=; 7.a3 a6 8.e3 Bd6 9.Nf3 0-0 10.Nd4+=) 7...Bd6 8.Nf3 0-0 9.Be2 a6 10.Nd4=; C2) 6...Be7 7.Nf3 (7.e3 0-0 8.Nf3 a6 9.a4 Be6 10.Be2=) 7...0-0 8.e3 a6 9.a4 Nf7 10.Be2=; C3) 6...Bc5 7.e3 (7.Nf3 0-0 8.e3 a6 9.Bd4 Be7 10.c4+=; 7.e4 Be6 8.Bd4 Qe7 9.Bc5 Qc5 10.ed5+=) 7...0-0 8.Nf3 a6 9.Be2 ab5 10.Bb5=; D) 6.Nd2 Nf5 7.Bb2 (7.Ngf3 Nd4 8.Nd4 Bb4 9.e3 Bc3 10.Rb1+=; 7.e3 Nd4 8.ed4 Bf5 9.Ngf3 Bb4 10.Be2+=; 7.c3 a6 8.Qa4 Bd6 9.e3 c6 10.bc6+=) 7...Be6 8.Nh3 Bb4 9.e3 d4 10.a3=; E) 6.c3 E1) 6...Bd6 7.Nf3 (7.e3 Nf5 8.Bd3 a6 9.Qb3 Nd4 10.ed4+=; 7.Nd2 0-0 8.Ngf3 Be6 9.Nb3 Qe7 10.Qd3–/+) 7...c6 8.bc6 bc6 9.c4 dc4 10.e3=; E2) 6...Nd7 7.Nd2 (7.Nf3 a6 8.ba6 Ra6 9.Nbd2 c5 10.Be3=; 7.e3 Nf5 8.Nf3 a6 9.Qc2 Nd6 10.c4+=; 7.a3 Ne5 8.Be5 fe5 9.e4 de4 10.Qh5+=; 7.Nh3 Nf5 8.e3 Nd4 9.cd4 Bb4 10.Nd2=) 7...Nc5 8.e3 Nf5 9.Ngf3 a6 10.Bc5=; E3) 6...Nf5 7.Nf3 (7.e3 a6 8.Qa4 Nd7 9.Nf3 Nd4 10.cd4=; 7.Nd2 a6 8.Qa4 Bd6 9.e4 de4 10.ba6+=) 7...a6 8.Qa4 c6 9.bc6 bc6 10.Nbd2=; E4) 6...a6 7.Qa4 (7.e3 ab5 8.e4 Qe7 9.Nd2 Nf5 10.Qh5–/+) 7...c6 8.bc6 Nc6 9.e3 Bf5 10.Nf3+=; F) 6.e3 F1) 6...Nf5 7.Nf3 (7.Bc3 Bc5 8.Bd3 a6 9.Nf3 0-0 10.a4=; 7.Bd3 a6 8.Nf3 ab5 9.Bb5 c6 10.Bd3=; 7.Bb2 a6 8.Nf3 Bb4 9.Bc3 Bc5 10.g4=; 7.c4 dc4 8.Bc4 Nd4 9.Qd4 Bb4 10.Kd1+=) 7...a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; F2) 6...Bb4 7.Bc3 (7.c3 Be7 8.Bd3 a6 9.Qa4 0-0 10.Nf3=) 7...Bc5 8.Qh5 Nf7 9.Nf3 g6 10.Qh4=; F3) 6...a6 7.Nf3 (7.Qh5 g6 8.Qh4 Bg7 9.Bb2 ab5 10.Bb5+=; 7.Nc3 Nf5 8.Rb1 ab5 9.Rb5 Bd6 10.Rd5+=; 7.c4 dc4 8.Bc4 Nf5 9.Nf3 Nd6 10.Qe2=; 7.Bd3 ab5 8.Bb5 c6 9.Bd3 Bb4 10.Bc3=) 7...Nf5 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; F4) 6...Be6 7.Be2 (7.Bd3 c5 8.bc6 Nc6 9.Nf3 Bd6 10.0-0=; 7.Nf3 a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; 7.Nd2 Bd6 8.Ngf3 a6 9.Bd3 ab5 10.Bb5=) 7...Bd6 8.Nf3 a6 9.Nc3 ab5 10.Nb5=; F5) 6...c5 7.Bb2 (7.Bc3 Be6 8.Nf3 Bd6 9.Bd3 0-0 10.0-0+=; 7.bc6 Nc6 8.Nf3 Bd6 9.Bc3 Be6 10.Bd3+=) 7...Be6 8.Nf3 Nd7 9.Be2 Bd6 10.Nc3=.

5.Qd4 c5

6.Qd2 Be6 7.e3 Bd6 8.Nc3 Ne7 9.0-0-0 Bc7 (9...a6 A) 10.Bc4 ab5 11.Bd5 Nd5 12.Nd5 Ra6 13.Nc3 Qb6–/+; B) 10.Nf3 ab5 11.Bb5 Nd7 12.h3 0-0 13.Ne4 Nc8–/+; C) 10.Kb1 ab5 11.Nb5 0-0 12.Nf3 Nbc6 13.Nd6 Qd6–/+; D) 10.a3 0-0 11.Nf3 Bc7 12.Re1 Ng6 13.Kd1 Ne5–/+; E) 10.Nd5 Bd5 11.e4 c4 12.ed5 ab5 13.Kb1 Na6+=) 10.g3 (10.Be2 a6 (10...0-0 11.Bf3 a6 12.Nd5 ab5 13.a3 Ra6=) 11.Bh5 Kf8 12.b6 Bb6 13.Nge2 Qd7+=; 10.Nf3 a6 11.ba6 Na6 12.Bb5 Kf7 13.h3 Ba5+=; 10.h4 a6 (10...0-0 11.Nge2 Re8 12.g4 Bg4 13.Ba3 b6+=) 11.ba6 Na6 12.Bb5 Kf7 13.h5 h6+=; 10.Bd3 a6 11.ba6 Na6 12.Bb5 Kf7 13.Nf3 Ba5–/+; 10.h3 a6 11.ba6 Na6 12.Bb5 Kf7 13.Kb1 Ba5+=) 10...Nd7 (10...a6 11.ba6 Na6 12.Bb5 Kf7 13.Nge2+= (13.Qe2 Be5–/+) 13...Nb4–/+; 10...Ba5 11.Nge2 a6 12.Nf4 Qd6 13.Ne6 Qe6=) 11.Nge2 Nb6 (11...a6 12.ba6 ba6 13.Bg2 Nb6+=) 12.Kb1 (12.Nf4 Bg4 13.Be2 Be2 14.Qe2 Bf4 15.gf4 0-0=) 12...0-0 (12...Nc4 13.Qc1 Bg4+=) 13.Bg2 (13.Nf4 Bg4+=) 13...Qe8 (13...a6+=) 14.Qc1 (14.Nf4 Bf4 15.gf4 a6+=) 14...a6–/+ 15.Ba3 Bd6 16.Ne4? (better is 16.Nf4!? Qf7 17.Ne6 Qe6 18.Nd5 Nbd5 19.Qd2 ab5 20.Bd5 Nd5 21.Qd5 Qd5 22.Rd5 Ra3 23.Rd6+=) 16...Qb5 (16...Qb5 17.Qb2 de4 18.Rd6 Ba2 19.Ka1 Bd5–+ (19...Qe2?! 20.Qa2 Nc4 21.Rd7+=)) 0–1. Izoitko,Alexey – Nikolaev,Vadim S (2215), St Petersburg White Nights op, 2004.

6.Qd2 Be6 7.e3 Bd6 8.Nc3 Ne7 9.Rd1 A) 9...Nd7 A1) 10.Be2 Qc7 (10...0-0 11.Nd5 Bd5 12.e4 Re8 13.ed5 Nb6=; 10...a6 11.Nf3 0-0 12.ba6 ba6 13.Nd5 Nd5=; 10...Qb8 11.Nf3 Qc7 12.h3 0-0 13.a3 Rad8=) 11.f4 0-0 12.Nf3 Rfe8 13.0-0 Rad8=; A2) 10.Bd3 Qc7 (10...0-0 11.Nf3 a6 12.ba6 ba6 13.Bc4 Nb6+=; 10...Ne5 11.Be2 Qb6 12.f4 Nf7 13.Nf3 0-0=) 11.Nf3 Rd8 12.Bc4 Nb6 13.Be2 0-0+=; A3) 10.Nf3 Ne5 11.Ne5 Be5 12.f4 Bc3 13.Qc3 Qb6=; A4) 10.a3 0-0 11.Be2 Qc7 12.Nf3 Rad8 13.0-0 Ne5+=; A5) 10.Nd5 Nd5 11.c4 Ne3 12.Qd6 Nc2 13.Kd2 Bf5+=; B) 9...a6 B1) 10.Bc4 ab5 11.Bd5 Nd5 12.Nd5 Ra2 13.Nc3 Rb2+=; B2) 10.ba6 Na6 11.Bb5 Kf7 12.Nf3 Nc7 13.Be2 b5=; B3) 10.Nf3 ab5 11.Bb5 Nbc6 12.a3 Qa5 13.Bc4 Bc7+=; B4) 10.a3 Nd7 (10...0-0 11.Nf3 Be5 12.Ne5 fe5 13.Ne4 Qb6=) 11.Nf3 0-0 12.ba6 ba6 13.Bc4 Nb6=; B5) 10.Nd5 Bd5 11.c4 Bf7 12.Qd6 Qd6 13.Rd6 Nc8=.

6.Qd2 Be6 7.e3 Bd6 8.Nc3 Ne7 9.Be2 A) 9...Qb6 10.Bh5 Kf8 (10...Kd7 11.Bf3 Rd8 12.Rd1 Kc8 13.Qd3 Be5=; 10...g6 11.Bf3 Be5 12.Nge2 a6 13.Rb1 Qa5=; 10...Kd8 11.Bf3 Kc8 12.Nd5 Qb5 13.c4 Qc4=) 11.Bf3 Be5 12.Nge2 a6 13.Rd1 Qd6=; B) 9...Nd7 B1) 10.Nf3 Qc7 (10...0-0 11.Rd1 Qc7 12.a3 Rad8 13.0-0 Ne5+=; 10...Ne5 11.Rd1 a6 12.Ne5 Be5 13.f4 Bc3=; 10...Qb8 11.Rd1 0-0 12.Nd5 Nd5 13.c4 Ne3=; 10...Qb6 11.Rd1 Rd8 12.Na4 Qc7 13.c4 Ne5+=) 11.0-0 Ne5 12.Ne5 fe5 13.Rad1 Rd8+=; B2) 10.Rd1 Qc7 (10...0-0 11.Nd5 Bd5 12.e4 Re8 13.ed5 Nb6+=; 10...a6 11.Nf3 0-0 12.ba6 ba6 13.Nd5 Nd5=; 10...Qb8 11.Nf3 0-0 12.Nd5 Nd5 13.c4 Ne3=) 11.Nf3 0-0 12.h3 Rad8 13.0-0 Ne5+=; B3) 10.Rb1 0-0 (10...Qc7 11.Nf3 Ne5 12.Ne5 fe5 13.Bh5 Kd7=; 10...Ne5 11.Nf3 Qc7 12.Ne5 fe5 13.Bh5 Kd7=; 10...Qb8 11.Nf3 0-0 12.0-0 Ne5 13.Rbd1 Rd8=) 11.Nf3 Ne5 12.Rd1 a6 13.Ne5 Be5+=; B4) 10.a3 Qc7 (10...0-0 11.Nf3 Ne5 12.Rd1 a6 13.Ne5 Be5=; 10...Ne5 11.Rd1 0-0 12.f4 Nf7 13.Nf3 Re8=; 10...Qb6 11.Nf3 0-0 12.Rd1 Rad8 13.0-0 Ne5+=; 10...Qb8 11.Nf3 Ne5 12.Rd1 0-0 13.Ne5 Be5=) 11.Nf3 Ne5 12.Rd1 Rd8 13.Ne5 fe5+=; B5) 10.Bh5 g6 11.Be2 Qc7 12.Nf3 Ne5 13.Rd1 0-0-0+=; C) 9...a6 10.Bh5 (10.Nf3; 10.a4) 10...Kf8 (10...g6 11.Be2 0-0 12.Nf3 Nd7 13.0-0 Ne5=) 11.Nge2 ab5 12.Nb5 Be5 13.Be5 fe5=; D) 9...Qc7 D1) 10.Nf3 Nd7 (10...0-0 11.0-0 Nd7 12.Rad1 Rad8 13.h3 Ne5+=; 10...a6 11.Rd1 Nd7 12.a3 0-0 13.ba6 ba6=) 11.0-0 Ne5 12.Ne5 fe5 13.Rfd1 Rd8+=; D2) 10.h3 0-0 (10...Nd7 11.Nf3 Ne5 12.Ne5 fe5 13.Bf3 e4+=; 10...Qb6 11.Bh5 g6 12.Bg4 Be5 13.Rd1 Bg4=; 10...Be5 11.Nf3 0-0 12.0-0 Nd7 13.a4 a5=) 11.Nf3 Nd7 12.Rd1 Rad8 13.0-0 Ne5+=; D3) 10.Rd1 Nd7 (10...Bh2 11.Nf3 Bd6 12.Bc4 dc4 13.Qd6 Qd6=) 11.Nf3 0-0 12.0-0 Rad8 13.h3 Ne5+=; D4) 10.Rb1 0-0 (10...Nd7 11.Nf3 Ne5 12.Rd1 0-0 13.Ne5 Be5=) 11.Nf3 Nd7 12.Rd1 Rad8 13.0-0 Ne5+=; D5) 10.Bh5 Kf8 (10...g6 11.Bf3 Be5 12.Rd1 Qc8 13.Ba3 a6+=) 11.h3 Nd7 12.Rd1 Ne5 13.Be2 Kf7=; E) 9...Qa5 E1) 10.Nf3 Qc7 (10...0-0 11.Rd1 a6 12.a4 Be5 13.Ne5 fe5=; 10...Nd7 11.Rd1 Nb6 12.a3 Rd8 13.0-0 Nf5=; 10...a6 11.0-0 ab5 12.Nb5 Qd2 13.Nd2 Nc8=; 10...Nf5 11.Rd1 Ne7 12.0-0 Qc7 13.h3 Nd7=) 11.Rd1 Nd7 12.a3 0-0 13.0-0 Rad8+=; E2) 10.Bh5 g6 (10...Kd8 11.Be2 Kc8 12.Nf3 Nd7 13.0-0 Ne5=) 11.Be2 Nd7 12.Nf3 Ne5 13.0-0 Rd8=; F) 9...Qd7 F1) 10.Nf3 Qc7 (10...0-0 11.Rd1 a6 12.a4 Re8 13.0-0 Qc7=; 10...a6 11.0-0 0-0 12.a4 Be5 13.Rfb1 Qd8=; 10...Be5 11.0-0 0-0 12.Ne5 fe5 13.Na4 Qc7+=; 10...Qd8 11.0-0 0-0 12.Rfd1 Qc7 13.g3 Be5=) 11.a3 0-0 12.h3 Nd7 13.Rd1 Ne5=; F2) 10.Bh5 Kd8 (10...Kf8 11.Nge2 Bg4 12.Bg4 Qg4 13.0-0 Kf7+=; 10...Bf7 11.Bf7 Kf7 12.Nf3 Be5 13.Ne5 fe5=; 10...g6 11.Be2 Qc7 12.Bf3 Be5 13.Rd1 Qc8=) 11.Nge2 Kc8 12.Rd1 Rd8 13.0-0 Qc7=; G) 9...Be5 10.Nf3 0-0 (10...a6 11.0-0 0-0 12.a4 Nd7 13.ba6 ba6=; 10...Qb6 11.Ne5 fe5 12.f4 ef4 13.ef4 d4=; 10...Qd6 11.Ne5 fe5 12.Bh5 Bf7 13.Bf7 Kf7+=; 10...Qd7 11.Rd1 0-0 12.0-0 a6 13.Ne5 fe5=) 11.0-0 Qc7 12.a4 d4 13.ed4 cd4=; H) 9...a5 10.Bh5 g6 11.Bf3 Be5 12.0-0-0 Qb6 13.a4 Bc3+=; I) 9...Kf7 10.Bh5 Kg8 11.Bf3 Be5 12.Nge2 a6 13.a4 Nd7=; J) 9...0-0 J1) 10.Nf3 Qc7 (10...Nd7 11.a4 Qc7 12.a5 Ne5 13.a6 b6=; 10...Re8 11.0-0 Nd7 12.Rad1 Qc7 13.h3 Rad8+=; 10...Qa5 11.0-0 Qc7 12.a4 Nd7 13.Rfd1 Rad8=; 10...Qd7 11.0-0 Qc7 12.a4 Nd7 13.Rfd1 Rad8=) 11.0-0 Nd7 12.Rfd1 Rad8 13.h3 Ne5+=; J2) 10.a3 Nd7 (10...a6 11.Nf3 Be5 12.0-0 ab5 13.Ne5 fe5=; 10...Be5 11.Nf3 a6 12.0-0 ab5 13.Ne5 fe5=; 10...Qb6 11.Rd1 a6 12.Bc4 Rd8 13.Nd5 Nd5=) 11.Nf3 Qc7 12.0-0 Ne5 13.h3 Rad8+=; J3) 10.Rb1 Qb6 (10...a6 11.ba6 Na6 12.Nf3 Be5 13.a3 Nc6+=; 10...Qc7 11.Bf3 Qa5 12.Rd1 Rd8 13.Nge2 Qb4+=; 10...Nd7 11.Nf3 Ne5 12.Rd1 a6 13.Ne5 Be5+=; 10...Re8 11.Bh5 g6 12.Be2 Nd7 13.Nf3 Ne5=) 11.Nf3 Nd7 12.Rd1 Rad8 13.0-0 Ne5+=; J4) 10.Bf3 Be5 (10...Qa5) 11.Nge2 a6 12.Rd1 ab5 13.Nd5 Nd5–/+; J5) 10.Rd1 a6 (10...Nd7 11.Nd5 Nd5 12.c4 N7b6 13.cd5 Bd5=; 10...Be5 11.Nf3 a6 12.Ne5 fe5 13.Ne4 Qb6=; 10...Qd7 11.Nf3 a6 12.a4 Re8 13.ba6 ba6=) 11.ba6 Na6 12.Nf3 Nc7 13.a4 Nc6+=.

6.Qd2 Be6 7.e3 Bd6 8.Nc3 Ne7 9.Nf3 A) 9...Nd7 A1) 10.Be2 Qb6 (10...Qc7 11.h3 0-0 12.0-0 Ne5 13.Rad1 Rad8+=; 10...0-0 11.Rd1 Qc7 12.h3 Rad8 13.0-0 Ne5+=; 10...Qb8 11.Rd1 0-0 12.h3 Qc7 13.0-0 Rad8+=; 10...Ne5 11.Rd1 a6 12.Ne5 Be5 13.f4 Bc3=) 11.Rd1 Rd8 12.h3 Ne5 13.0-0 0-0+=; A2) 10.Rb1 Qc7 (10...Ne5 11.Ne5 fe5 12.Rd1 d4 13.Ne4 Ba2=) 11.Bd3 Rd8 12.h3 0-0 13.Ne2 Bf7–/+; A3) 10.Bd3 Qc7 (10...0-0 11.Rd1 Qc7 12.Ne2 Ne5 13.Be5 Be5+=; 10...Ne5 11.Ne5 fe5 12.Rd1 d4 13.Ne4 Ba2=; 10...Qb8 11.Rd1 0-0 12.h3 Rd8 13.Ne2 Nb6+=) 11.h3 Ne5 12.Be2 Rd8 13.Rd1 0-0+=; A4) 10.Rd1 0-0 (10...Ne5 11.Ne5 Be5 12.f4 Bc3 13.Bc3 Bg4=; 10...Qa5 11.a3 a6 12.Bd3 0-0 13.0-0 Qb6=; 10...Nb6 11.a4 Qc7 12.a5 Nbc8 13.Ra1 0-0=; 10...Qc7 11.Be2 0-0 12.h3 Ne5 13.Ne5 Be5+=) 11.Bc4 Nb6 12.Be2 Qc7 13.a3 Rad8+=; A5) 10.a3 Qc7 (10...Ne5 11.Ne5 fe5 12.Rd1 d4 13.Ne4 0-0=; 10...0-0 11.Be2 Ne5 12.Rd1 a6 13.Ne5 Be5=; 10...Qb6 11.Be2 0-0 12.a4 a5 13.Rd1 Ne5=) 11.Rd1 Rd8 12.Bc4 Nb6 13.Ba2 0-0+=; B) 9...Qc7 10.Rd1 Nd7 (10...Be5 11.Bd3 0-0 12.0-0 a6 13.Be2 Nd7=) 11.Bc4 Nb6 12.Be2 0-0 13.0-0 Rad8+=; C) 9...Qb6 10.Rd1 (10.Bd3; 10.Be2; 10.0-0-0; 10.a4) 10...Bc7 (10...Nd7 11.Bc4 0-0-0 12.Nd5 Nd5 13.Bd5 Bd5=; 10...Be5 11.Bd3 0-0 12.Na4 Qd6 13.Be5 fe5+=; 10...Kf7 11.Bc4 dc4 12.Qd6 Qd6 13.Rd6 a6+=) 11.Na4 Qd6 12.c4 Nd7 13.Nc3 Ba5=; D) 9...a6 D1) 10.Be2 Qc7 (10...0-0 11.0-0 Qc7 12.Rfd1 Nd7 13.Rab1 Rfd8=; 10...Qa5 11.0-0 ab5 12.Nb5 Qd2 13.Nd2 Nc8=; 10...Nd7 11.ba6 ba6 12.Rb1 0-0 13.0-0 Qc7=; 10...b6 11.Rd1 0-0 12.a4 ab5 13.ab5 Qd7=) 11.Rd1 Nd7 12.0-0 0-0 13.ba6 ba6=; D2) 10.Bd3 Qc7 (10...Qd7 11.a4 c4 12.Be2 0-0 13.0-0 Be5=; 10...0-0 11.0-0 Nd7 12.Rfd1 Ne5 13.Ne5 Be5=; 10...c4 11.Nd4 Qd7 12.Be2 ab5 13.Ncb5 Be5=; 10...b6 11.0-0 0-0 12.Rfd1 ab5 13.Nb5 Nbc6=) 11.Rd1 Nd7 12.ba6 ba6 13.Bc4 Nb6=; D3) 10.ba6 ba6 (10...Na6 11.Bb5 Kf7 12.0-0 Nc7 13.Rfd1 Nb5=) 11.Be2 Nbc6 12.0-0 Rb8 13.Rab1 d4=; E) 9...Qd7 E1) 10.Be2 Qc7 (10...0-0 11.0-0 Qc7 12.a4 Nd7 13.Rfd1 Rae8=; 10...a6 11.0-0 0-0 12.a4 Be5 13.Rfb1 Qd8=; 10...Be5 11.0-0 0-0 12.Ne5 fe5 13.Na4 Qc7+=; 10...Qd8 11.Rd1 a6 12.0-0 0-0 13.a3 Be5=) 11.Rd1 Nd7 12.h3 0-0 13.a3 Rad8=; E2) 10.Rd1 a6 (10...0-0 11.Bd3 a6 12.a3 Rd8 13.Be2 Qe8=; 10...Be5 11.Be2 0-0 12.0-0 a6 13.Ne5 fe5=) 11.ba6 ba6 12.Ba3 Nbc6 13.Bc4 d4=; F) 9...Qa5 10.Bd3 Nd7 (10...0-0 11.0-0 Qc7 12.Rfd1 Nd7 13.a4 Rae8=; 10...Bg4 11.Be2 Be6 12.0-0 Qc7 13.a4 Nd7=; 10...a6 11.0-0 ab5 12.Nb5 Qd2 13.Nd2 Nc8=; 10...Be5 11.0-0 c4 12.Be2 Bc3 13.Bc3 Qb5=) 11.0-0 Ne5 12.Ne5 fe5 13.Rad1 d4=; G) 9...g5 10.h3 Nd7 11.Rd1 Ne5 12.Ne4 de4 13.Qd6 ef3+=; H) 9...Kf7 10.Be2 Nd7 (10...Re8 11.a4 Nd7 12.a5 Kg8 13.a6 b6=; 10...Qc7 11.a4 Nd7 12.0-0 Rhe8 13.a5 Kg8=; 10...Rf8 11.0-0 Kg8 12.Rfd1 Qc7 13.a4 Nd7=; 10...Qb6 11.a4 a5 12.ba6 ba6 13.Rb1 Qc7=) 11.0-0 Qc7 12.Rfd1 Rhe8 13.h3 Kg8=; I) 9...0-0= I1) 10.Rd1 a6 (10...Bc7 11.Be2 a6 12.ba6 Na6 13.0-0 Nb4=; 10...Nd7 11.Bc4 Nb6 12.Be2 Qc7 13.0-0 Rad8+=; 10...Qd7 11.Be2 a6 12.a3 Be5 13.Ne5 fe5=; 10...Re8 11.Bc4 dc4 12.Qd6 Qd6 13.Rd6 Nc8=) 11.Bc4 ab5 12.Nb5 Nbc6 13.e4 dc4+=; I2) 10.Bd3 Nd7 (10...Qc7 11.a3 Nd7 12.Rd1 Rae8 13.0-0 Rd8+=; 10...a6 11.0-0 Nd7 12.Rfd1 Ne5 13.Ne5 Be5=; 10...Be5 11.0-0 Qc7 12.a4 Nd7 13.a5 Rad8=) 11.Rd1 Qc7 12.Ne2 Rad8 13.a3 Nb6+=; I3) 10.Rb1 Qc7 (10...Nd7 11.Be2 Ne5 12.Rd1 a6 13.Ne5 Be5+=; 10...Qa5 11.Be2 Rd8 12.Rd1 Qb4 13.Bc1 a6=; 10...Qb6 11.Rd1 Be5 12.Bd3 Bc3 13.Bc3 c4=; 10...a6 11.ba6 Na6 12.Be2 Be5 13.a3 Nc6+=) 11.Rd1 Nd7 12.Bc4 Nb6 13.Be2 Rad8+=; I4) 10.a3 Qc7 (10...Nd7 11.Be2 Ne5 12.Rd1 a6 13.Ne5 Be5=; 10...a6 11.Rd1 Nd7 12.ba6 ba6 13.Bc4 Nb6=; 10...Be5 11.Be2 a6 12.0-0 ab5 13.Ne5 fe5=; 10...Qa5 11.Rd1 Be5 12.Ne5 fe5 13.Ne2 Qd2=) 11.Be2 Nd7 12.Rd1 Rad8 13.0-0 Ne5+=; I5) 10.Be2 Nd7 (10...Qc7 11.Rd1 Nd7 12.a3 Rad8 13.0-0 Ne5+=; 10...Re8 11.0-0 Nd7 12.a4 Qc7 13.a5 Ne5=; 10...Qd7 11.0-0 Qc7 12.a4 Nd7 13.Rfd1 Rae8=; 10...Qa5 11.0-0 Qc7 12.a4 Nd7 13.Rfd1 Rae8=) 11.0-0 Qc7 12.Rad1 Rad8 13.h3 Ne5+=.

6.Qh4 Bf5 7.Nc3 d4 8.Nd1 (better is 8.0-0-0!? Bd6 9.Ne4=+) 8...Bc2–+ 9.Qf4 Ba4 10.Qe4 Ne7 (10...Qe7 11.Qe7 Ne7–/+) 11.Bc1? (11.Qb7!? Qd5 12.Qd5 Nd5 13.e3=+).

5.Qd4 Bd6

6.Qe3 Ne7 7.g3 0-0 8.Bh3 Bh3 9.Nh3 Qd7 10.Nf4 Qb5 11.Qb3 Qb3 12.ab3 Bf4 13.gf4 Nbc6 14.c3 Rfe8 15.b4 Ng6 16.f5 Nf4 17.Ra2 Re2 18.Kf1 Rae8 19.f3 Re1 20.Kf2 Rh1 21.Kg3 Ne2 22.Kg2 Rb1 23.b5 Ne5 24.Ba3 Rg1 25.Kh3 Nf4 26.Kh4 Nf3# 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

6.Nf3 c6 7.c4 dc4 8.Nc3 Be6 9.Rd1 Be7 10.Qd8 Bd8 11.Nd4 Bf7 +=. katchum (2465) – jjones (2690), net–chess.com, 2005.

5.Bd4 c5

6.Bb2 a6 7.a4 (7.Nd2 Bg4 8.f3 Be6 9.e4 de4 10.Qe2=; 7.e3 c4 8.Ne2 ab5 9.Nf4 Bf5 10.Be2=; 7.ba6 Na6 8.e3 Be6 9.Bb5 Kf7 10.Nf3=; 7.e4 de4 8.Qd8 Kd8 9.Nc3 ab5 10.Bb5=) 7...ab5 8.ab5 Ra1 9.Ba1 d4 10.Nd2=.

6.Bb2 d4 7.e4 (7.e3 Qe7 8.Qh5 g6 9.Qe2 de3 10.Qe3=; 7.c3 Bd7 8.Qd3 Qb6 9.a4 a6 10.Qe4=; 7.Qd2 Nd7 8.e3 Qe7 9.Nf3 Nb6 10.Bd3=) 7...de3 8.Qd8 Kd8 9.fe3 Bf5 10.Na3=.

6.Bb2 Be6 7.e3 Qa5 8.Bc3 Qc7 9.Nf3 Bd6 10.Bd3=.

6.Bb2 Be6 7.e4 de4=+ 8.Qd8 Kd8 9.Nd2 f5 10.Nh3 Nf6 11.Nf4 Bg8 12.0-0-0 Ke8 13.Bf6 gf6 14.g3 a6 15.ba6 Ba2 16.ab7+/– Ra7 17.Bh3 c4 18.Kb2 Bd6 19.c3 Kf7= 20.Nc4 Bf4 21.Ra1 Rb7 22.Ka2 Rc8 23.Rhb1 Ra7 24.Kb3 ½–½. Jose Luis – DaveMC, ChessWorld.net, 2006.

6.Bb2 Bg4 7.Nf3 Qd7 8.e3 c4 9.a4 a6 10.Nc3=.

6.Bb2 Nh6 7.e3 Nf5 8.Ne2 Be6 9.Nf4 Bf7 10.Bd3+=.

6.Bc3 Bg4 (6...d4 7.Bd2 Be6 8.Nf3 a6 9.e3 de3 10.Be3=) 7.Qd2 (7.h3 Be6 8.e3 Bd6 9.Nf3 Nh6 10.Bd3=; 7.Nf3 d4 8.Bd2 Nd7 9.h3 Bh5 10.c3=; 7.Qd3 Ne7 8.e3 Bf5 9.Qd2 a6 10.Nf3=; 7.Bb2 a6 8.h3 Bf5 9.e3 c4 10.Nc3+=) 7...Ne7 8.e3 a6 9.a4 Qd7 10.h3=.

6.bc6 bc6 7.e3 (7.Nd2 c5 8.Bb2 Nc6 9.e4 de4 10.Bb5=) 7...Nh6 8.Nf3 Nf5 9.Bd3 Bd6 10.0-0=.

6.bc6 Nc6 7.e3 (7.Nf3 Qa5 8.Qd2 Bb4 9.c3 Bd6 10.e3=) 7...Nd4 8.ed4 (8.Qd4 Ne7 9.Nc3 Be6 10.Bb5=) 8...Qe7 9.Be2 (9.Qe2 Be6 10.Nd2+=) 9...Qb4 10.c3 Qb2 11.Nd2 Qc3 12.Bb5 Kd8 13.Ne2 Qa3 14.0-0 Bd6 15.Nb3 Ne7 16.Nc3 Bc7 17.Re1 Qd6 18.g3 a6 19.Rc1 h5 20.Qe2 Nc6 (20...ab5? 21.Nb5 Qb4 22.Nc7+-) 21.Bc6 bc6 (21...Qc6?? 22.Qe7) 22.Na4 Bg4 23.f3 Bd7 24.Nbc5 Bc8 25.Ne6 Be6 26.Qe6 h4 27.Qd6 Bd6 28.Rc6 Kd7 (28...Bb4 29.Ree6+/–) 29.Rec1 Rad8 30.Ra6 hg3 31.hg3 Bg3 32.Nc5 Ke8 33.Ra7 Rc8 (33...Rh7 34.Kg2 Bh4 35.Ne6+-) 34.Rg7 Bh2 35.Kf1 (35.Kf2 Bd6 36.Re1 Kf8 37.Ne6 Ke8 38.Ng5 Kf8 39.Rf7 Kg8 40.Rf6 Rh2 41.Kg1 Bb8+-) 35...Bd6 36.Re1 Kf8 37.Ne6 Ke8 38.Kg1 Bb4 (38...Bh2 39.Kf2 Rc2 40.Kf1+-) 39.Re2 Rc1 40.Kg2 Rhh1 41.Nc7 Kf8 42.Rd7 Rcg1 43.Kf2 Re1 (43...Rf1 44.Ke3 Rh3 45.Rf2 Re1 46.Kd3 Rd1 47.Kc2+-) 44.Re1 Be1 45.Ke3 Bh4 46.Nd5 Re1 47.Kd3 f5 (47...Ra1 48.Ra7+-) 48.Ne3 f4 49.Ng2 Rd1 50.Kc2 Rh1 51.Rh7 Rh2 52.Rh4 Rg2 53.Kb3 Ke7 54.Rf4 Ke6 55.a4 Kd5 56.Kc3 Ra2 57.Rf5 Ke6 58.Kb3 Rf2 59.Rf8 Ke7 (59...Rd2 60.Kc4+-) 60.Rf4 Rf1 61.a5 Ke6 62.Kc4 Rc1 63.Kb5 Rb1 64.Kc6 Rc1 65.Kb6 Rb1 66.Ka7 Kd5 67.a6 Rb3 68.Ka8 Rb2 69.a7 Rb3 70.Rf8 Kd4 71.Rb8 Rf3 72.Kb7 (72.Kb7 Rf7 73.Kb6 Ra7 74.Ka7+-) 1–0. Rosner,Dirk – Voelk,Karl_Heinz, DESC, 2000.

4.d4 Bd6

5.Nc3 Ne7 6.e4 ed4 7.Nd5 Nd5 8.Qh5 g6 9.Qd5 Bb4 10.Kd1 Qd5 11.ed5 Bc3 12.Bc3 dc3 13.Ne2 0-0 14.Nc3 Rd8 15.Bc4 Kg7 16.Kd2 a6 17.Rhe1 Kf8 18.Kc1 Bf5 19.Rb1 Nd7 20.ba6 ba6 21.Rb7 Nb6 22.Bb3 Rac8 23.Ra7 Rd6 24.Ra6 Rcd8 25.Nb5 R6d7 26.Nc7! Nd5 27.Nd5 Rd5 28.Bd5 Rd5 29.Rf6 Kg7 30.Rb6 Ra5 31.Kb2 Kh6 32.Rb4 Rc5 33.g4 Rc2 34.Kb3 Rf2 35.gf5 Rf5 36.Re3 Rh5 37.h4 Rd5 38.a4 Rd1 39.Re5 Rb1 40.Kc4 Rh1 41.Kb5 Ra1 42.a5 Ra2 43.a6 Ra1 44.Rb2 Ra3 45.Kb6 Rf3 46.a7 Rf6 47.Ka5 Rf8 48.Rb8 1–0. Hossa (2195) – Happyhorse (2020), ICS rated blitz match, 1998.

5.c4 dc4 A) 6.Nf3 Bb4 (6...ed4 7.Qd4 a6 8.Qc4 ab5 9.Qb5 Nc6 10.Nc3=) 7.Nc3 (7.Bc3 Bc3 8.Nc3 c6 9.bc6 Nc6 10.e3+=) 7...c6 8.bc6 Nc6 9.d5 Qa5 10.Qd2+=; B) 6.d5 c6 7.bc6 (7.dc6 bc6 8.Nc3 Bb4 9.Qa4 Qa5 10.Qa5–+) 7...bc6 8.e4 Qb6 9.Bc3 cd5 10.Qd5+=; C) 6.e3 Be6 (6...ed4 7.Qd4 Nd7 8.Nf3 Nb6 9.Nbd2 Qe7 10.Nc4=) 7.Nf3 (7.Nd2 Bb4 8.Rc1 a6 9.ba6 b5 10.a4–/+; 7.de5 Bb4 8.Nc3 Qd1 9.Rd1+= a6 10.ba6+=; 7.Nc3 Ne7 8.Nf3 Nd7 9.d5 Bf7 10.e4=; 7.Bc3 Ne7 8.Nf3 Nd7 9.Nbd2 Nd5 10.Qc2+=; 7.Qc1 ed4 8.Bd4 c5 9.Bb2 Qa5 10.Nd2+=) 7...c6 8.Qa4 cb5 9.Qb5 Qd7 10.Bc4=; D) 6.de5 Be5 7.Qd8 Kd8 8.Be5 fe5 9.Nf3 Nd7 10.e3=.

5.c4 ed4 6.Qd4 (6.Bd4 dc4 7.e3 (7.Qa4 c5 8.Bc3 Nd7 9.Qc4 Ne5 10.Qe4+=) 7...Bb4 8.Bc3 Qd1 9.Kd1 Bc3 10.Nc3+=) 6...Be5 (6...Ne7 7.e3 (7.cd5 Nd5 8.Qe4 Ne7 9.Nc3 Nd7 10.Rd1=) 7...Be6 8.cd5 Be5 9.Qd2 Bb2 10.Qb2=; 6...Be6 7.Nf3 (7.Qe3 Qe7 8.cd5 Bd5 9.Qe7 Ne7 10.Nd2=; 7.cd5 Be5 8.Qd2 Bb2 9.Qb2 Qd5 10.Nc3=) 7...c5 8.Qe3 Qe7 9.cd5 Bd5 10.Qe7=; 6...dc4 7.Nc3 (7.e3 Nd7 8.Nf3 Nb6 9.Nbd2 Qe7 10.Nc4=; 7.Qc4 Nd7 8.Qc2 Ne5 9.Nf3 Nf3 10.ef3=; 7.Nd2 a6 8.Qc4 ab5 9.Qb5 Nc6 10.e4=) 7...a6 8.Qc4 Nd7 9.Rd1 Nc5 10.e3=) 7.Qe3 (7.Qd2 Bb2 8.Qb2 dc4 9.e3 Be6 10.Nd2=) 7...d4 8.Qe4 Ne7 (8...Nd7 9.f4 (worse is 9.Bd4 Nc5 10.Bc5 Ne7+=) 9...f5 10.Qf5=) 9.Nf3 Bf5 (9...Nd7 10.Ne5 (worse is 10.Nd4 Nc5 11.Qe3 Na4–+; worse is 10.Bd4 Nc5 11.Bc5 Ba1+=) 10...fe5 11.e3=) 10.Qb7+= Nbc6 11.Ne5 fe5 12.Ba3 Na5 13.Qf3 e4 14.Be7 ef3 15.Bd8 Rd8 (15...fe2 16.Be2 (16.Bc7?! ef1Q 17.Rf1 Nc4=) 16...Rd8 17.Nd2+=) 16.Nd2 (16.ef3 d3 17.Nd2 c5+/–) 16...fe2+= 17.Be2 0-0 18.Bf3 Rfe8 19.Kd1 Bd3 20.Rc1 Rd6 21.Bd5 Kf8 22.Re1 Re1 23.Ke1 c6 24.Be4 Re6 25.f3 c5 26.Kf2 Be4 27.Ne4 Nb7 28.a4 Re5 29.a5 Na5 30.Ke2 Nb7 31.Kd3 Ke7 32.Ra1 Kd7 33.Ra7 Kc7 34.Ra6 Nd8 35.g3 1–0. Pleschke,Helmut – Kendall,Donald, IECG, 2001.

5.c4 Be6 6.c5 Be7 7.Nc3 ed4 8.Qd4 Nh6 9.Qa4 0-0 10.Ba3 c6 11.e3 a6 12.b6 Nd7 13.Qa5 Re8 14.Rb1 Bf5 15.Rc1 d4 16.Na4 de3 17.fe3 Ng4 18.Qd2 Bf8 19.Rc3 Qe7 20.Bc1 Rad8 21.Be2? Nc5 22.Qd8 Rd8 23.Bg4 Bg4 24.Nf3 (24.Nf3 Na4 25.Rc4 Bf3 26.gf3–+). iczker – lmouse, internet, 2011.

5.e3 c5 6.c4 cd4 7.ed4 Ne7 8.cd5 Nd5 9.Bc4 Bb4 10.Nd2 Be6 11.Qb3 Bd2=+ 12.Kd2 Nc7?? 13.Nf3 Bc4= 14.Qc4 Nd7 15.de5?? Ne5–+ 16.Qd4 Nf3 17.gf3 0-0 18.a4 Qe8 19.Qc4 Kh8 20.Rhe1 Qd7 21.Kc2 Nd5 22.Kb3 Rac8 23.Qh4 Qf5 24.Rad1?? Qc2–+ 25.Ka3 Rc3! 26.Bc3 Qc3 27.Ka2 Nb4 28.Kb1 Qc2 29.Ka1 Qa2 0–1. iczker – talnahaju, internet, 2011.

5.e3 Qe7 6.c4 ed4 (6...dc4 7.Bc4 Nd7 8.Qc2 ed4 9.Bg8 Bb4+=; 6...Bb4 7.Bc3 dc4 8.Bc4 ed4 9.Qd4 Bc5+=; 6...c6 7.cd5 ed4 8.Bd4 cd5 9.Bd3 Be6+=) 7.Bd4 Be6 8.cd5 Bd5 9.Nf3 a6=.

5.e3 Bf5 A) 6.c4 ed4 (6...Bb1 7.Qb1 Bb4 8.Kd1 Ne7 9.a3 Ba5=; 6...dc4 7.Bc4 ed4 8.Bd4 c5 9.Bc3 Qe7+=; 6...c6 7.bc6 bc6 8.cd5 cd5 9.de5 fe5+=) 7.Bd4 Ne7 8.c5 Be5 9.Nf3 Nd7=; B) 6.de5 Be5 7.Be5 fe5 8.c4 Nf6 9.cd5 Qd5=.

5.e3 Nh6 A) 6.c4 Be6 (6...Bg4 7.Be2 Be2 8.Qe2 0-0 9.Nf3 e4=; 6...ed4 7.Qh5 Nf7 8.Bd4 Be6 9.cd5 Bd5=) 7.c5 Be7 8.de5 Nd7 9.ef6 Bf6=; B) 6.de5 Be5 (6...fe5 7.c4 Be6 8.cd5 Bd5 9.Nc3 Be6=) 7.Be5 fe5 8.c4 d4 9.Nf3 de3=.

5.e3 c6

6.a4 a6 7.c4 dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Bc3 Bb4 12.Qb3 Bc3 13.Nc3 Ne7 14.Nge2 cb5 15.Bb5 Nbc6? 16.0-0 Bd7+/– 17.Bc6 Nc6 18.Ne4 Ke7 19.de5 Ne5 20.Nd4 b5 21.Qd5 Qb6 22.Rb1 Rb8 23.f4 Nc4 24.Nf5?? Ke8?? 25.Ned6 Nd6 26.Nd6 Kd8+= 27.Qg8 Kc7 28.Nb5 Bb5 29.Qf7 Kd6?? 30.Rd1+- Kc5 31.Qe7 Kc4 32.Qe4 Kc5 33.Rd5 Kc6 34.Qe6 Kb7= 35.Qe7 Ka8 36.Qa3 Qa6 37.Qc5 Qb6 38.Qa3 Qa6 39.Qa6?? Ba6–+ 40.Ra5 Ka7 41.Kf2 Rb2 42.Kg3 Kb6 43.Rd5 Bb7 44.Rd6 Kc7 45.Re6 Rg2 46.Kh4 Kd7 47.Re7 Ke7 48.f5 g6 49.fg6 hg6 50.Kh3 Ke6 51.e4 Ke5 52.Kh4 Ke4 53.Kh3 (53.Kh3 Kf3 54.Kh4 Rh2; 53.h3 Rc2 54.Kg3 Ke3 55.h4 Rg2 56.Kh3 Kf3 57.h5 Bc8 58.Kh4 g5). iczker – sakkmat (1605), internet, 2011.

6.c4 Be6 7.c5 Bc7 8.a4 Nd7 9.Nc3 Ne7 10.Nf3 e4 11.Nd2 0-0 12.Be2 f5 13.h3 f4 14.ef4 Bf4 15.Bc1 Ng6 16.Nb3 Qg5 17.0-0?? Bh3–+ 18.g3 e3 19.Be3 Be3 20.fe3 Qg3 21.Kh1 Qg2 0–1. iczker – marki37, internet, 2011.

5.e3 ed4

6.Bd4 Ne7 7.c4 (7.Qh5 g6 8.Qh4 Nd7 9.Bf6 Nf6 10.Qf6 Rf8=) 7...0-0 (7...c5 8.Bc3 Be6 9.Qh5 Bf7 10.Qg4=) 8.Nf3 c5 9.Bc3 Be6 10.Nbd2 (10.Qc2 Qe8=) 10...Nd7 11.Qc2 Kh8 12.Rd1 Qc7 13.Be2 Nb6 ½–½. Izoitko,Alexey – Eltsov,Valery (2110), Vladimir Zak mem, St Petersburg RUS, 2007.

6.Bd4 Bf5 7.Nd2 Ne7 8.c4 c5 9.Bb2 d4 (9...Nd7 10.cd5 Nd5 11.Nc4=) 10.ed4+= cd4 11.Bd4 Nd7 (11...Bh2 12.Nb3 Bc7 13.g3+=) 12.Ngf3 (12.Be2 0-0+=) 12...0-0 13.Be2 Qc7 14.0-0 Nc5 15.Nb3 Rfd8 16.Qc1 (16.Bc5 Bc5 17.Qc1 Rac8+=) 16...Bh2= 17.Nh2 Nb3 18.ab3 Rd4 19.Nf3 Rg4 (19...Rdd8 20.Qe3 Re8 21.Ra7+=) 20.Qe3 (20.Rd1 Ng6 21.Nd4 Re4+-) 20...Re4= 21.Qd2 Rd8 22.Qb2 Ng6 (22...Nc8 23.Rfd1=) 23.Rfd1 (worse is 23.Ra7 Nf4 24.Bd1 Ng2–/+) 23...Bg4 24.Rd8 Qd8 25.g3? (better is 25.c5=) 25...Ne5–+ 26.Rd1 Qe8 (26...Nf3 27.Bf3 Qe7 28.Be4 Bd1 29.Qd4+/–) 27.Ne5 (27.Nd4 Be2 28.Ne2 Qh5–+) 27...Be2 (27...Re2?! 28.Qd4 Bh5 29.Qd5 Kh8 30.Nf3=; 27...fe5? 28.f3 Rd4 29.fg4 Rd1 30.Bd1+-) 28.Rd7 (28.Rd5 Re5 29.Qd2 Bf3–+) 28...Re5 (28...Qe5?! 29.Qe5 fe5 30.Kg2–+) 29.Rb7 (29.Qd2 Qh5 30.Rd8 Kf7 31.Qd7 Re7 32.Qd5 Qd5 33.cd5–+ (33.Rd5?? Bf3 34.g4 Bd5 35.cd5 Re4–+)) 29...Bf3 0–1. Brukske (1635) – pierre (2070), internet, 2006.

6.Bd4 Bf5 7.Bd3 Bd3 8.cd3 c5 9.bc6 Nc6=.

6.Bd4 Bf5 7.Nf3 a6 8.Nh4 Ne7 9.c4 Bb4=.

5.e3 Nd7

6.c4 dc4 7.Bc4 ed4 8.Bd4 Ne5 9.Be2 c5=.

6.c4 c6 7.c5 Bb8 8.Qb3 Ne7 (8...a6 9.bc6 bc6 10.Nc3=) 9.Nd2 (9.Nf3 a6 10.bc6 bc6=) 9...0-0 (9...a6 10.b6=) 10.Ngf3 Ng6 11.h4 e4 (better 11...ed4!? 12.Bd4 Nge5=) 12.Ne4+/- Kh8 (12...Re8 13.Nc3 Ndf8 14.Be2+/-) 13.Ned2 f5 14.h5 Ne7 15.a4 (15.Bd3 h6+/-) 15...f4 16.e4 Nf6 (16...de4 17.Ne4 Nd5 18.bc6 bc6 19.Bb5 Qa5 20.Nfd2+/-) 17.e5+- Ne4 18.Bd3 (18.Ne4 de4 19.Ng5 e3 20.fe3 fe3 21.Qe3 Nf5+-) 18...Bf5 19.Qc2 Nd2 20.Nd2 Qd7 21.Nf3 Bg4 (better 21...Bc7!?+-) 22.Bh7 cb5 23.ab5 Qb5 24.Bd3 Qd7 (24...Qc6 25.h6! gh6 26.Bb5+-) 25.h6 g6 (25...Bf5 26.Bc1 gh6 27.Rh6 Kg7 28.Rh5+-) 26.Ng5 (better 26.Bg6!? Bf3 27.gf3 Bc7+-) 26...Bf5 27.Kf1 Bc7 28.Re1 Nc6 (28...Bd3 29.Qd3 Rf5 30.Nf7 Kh7 31.Nd6 Bd6 32.cd6+- (32.ed6?! Nc6+-)) 29.e6 Qe7 30.Nf7 Kh7?? (30...Rf7 31.ef7 Bd3 32.Qd3 Qf7+-) 31.Bf5 (31.Bf5 Rg8 32.Rh5+-) 1-0. zembelek (2105) - amayak (2090), Rated Blitz game, lichess.org, 2013.

6.c4 c6 7.bc6 bc6 8.cd5 Qa5 9.Bc3 Qd5=.

6.c4 ed4 7.Bd4 dc4 8.Nf3 a6 9.Bc4 ab5=.

6.Nf3 e4 7.Nfd2 c6 8.Nb3 (8.c4 Ne7=) 8...Ne7 9.a4 0-0 10.c4 f5 11.c5 Bc7 12.g3 Nf6 13.Be2 g5 14.h4 h6 (14...g4!?=) 15.hg5+= hg5 16.Nc3 Kg7 17.Qc2 Rh8 18.0-0-0 (18.Rh8 Qh8 19.a5 Qh1 20.Kd2 Qg2=) 18...Ng6 (18...Kf7 19.Rdg1=) 19.Nd2 (19.Kd2 f4 20.gf4 gf4=) 19...Be6= 20.g4 (20.Rdf1 Kf7=) 20...Ng4 (20...f4 21.Rh8 Qh8 22.Nde4 de4 23.Ne4=) 21.Bg4 fg4 22.Nce4 (better 22.Rh8 Qh8 23.Qb3=) 22...de4?? (22...Rh1 23.Rh1 Bf5=+) 23.d5+- Be5 24.de6 Rh1 25.Rh1 Qf6 (25...Qd5!?+-) 26.Ne4 Qe6 (26...Bb2 27.Qb2 Qb2 28.Kb2+-) 27.Ng5 (better 27.Rh7 Kf8 28.Be5 Qe5 29.Nd6 (worse 29.Rb7 Ne7+-) 29...Qa1 30.Kd2+-) 27...Qf6?? (27...Bb2 28.Qb2 (28.Kb2?! Qe5 29.Qc3 Kf6 30.Ne4 Ke6+-) 28...Qe5 29.Rh7 Kf6 30.Ne4 Ke6 31.Qc2 Qa1 32.Kd2+-) 28.Ne4 (better 28.Rh7 Kf8 29.Rf7 Qf7 30.Nf7 Bb2 31.Qb2 Kf7 32.bc6+-) 28...Bb2 29.Qb2 Qb2 30.Kb2 Re8 (30...Ne5 31.Kc3+-) 31.Nd6 Rf8 32.Rh2 cb5 33.ab5 Rb8 (33...a6 34.b6 Ne5 35.Kc3+-) 34.Kc3 Kf6 35.Kd4 (35.Rh7 Ne7+-) 35...a5 36.e4 (36.Rh5 b6 37.c6 Rd8+-) 36...a4 (36...Rd8 37.Rh5 Ne7 38.Rh6 Ng6 39.e5 Kg7 40.Rh5+-) 37.Rh1 (37.e5 Kg7+-) 37...b6 38.c6 Rd8 39.Kd5 (better 39.e5 Ne5 40.c7+-) 39...Ne7-+ 40.Kc4 Rd6 41.Re1? (better 41.Rh8-+) 41...Ke5 42.Kb4 Rd4 43.Ka3 Re4 44.Rd1 (44.Rc1 Kd6 45.Rd1 Nd5-+) 44...Nd5 45.Rh1 (45.Rb1 Nc7-+) 45...Nc7 46.Rh7 (46.Rb1 Kd5-+) 46...Nb5 47.Kb2 Rc4 (better 47...Kd6 48.Rh6 Kc7-+) 48.Re7 (48.Rh5 Kd6 49.Rb5 Kc6 50.Rf5-+) 48…Kd6 (48...Kd6 49.Re3 Kc6-+) 0-1. spojar (2165) - gamlet (2095), Rated Blitz game, lichess.org, 2014.

5.e3 e4

6.c4 dc4 7.Bc4 Qe7 8.Qb3 Nh6 9.Nc3 c6 10.a4 ½-½. zembelek1 (2155) - Mate_in_123 (2210), Rated Classical tournament, lichess.org, 2016.

6.c4 dc4 7.Bc4 Qe7 8.Qc2 Nd7 9.Nc3 f5+=.

6.c4 c6 7.a4 f5 8.Qb3 Nf6 (8...Ne7 9.Nc3+=) 9.Nc3 Be6 (9...Qa5 10.Nh3+/-) 10.c5 (10.Nh3 h6+/-) 10...Bc7+= 11.h3 (11.Nh3 0-0+=) 11...Qc8 (11...0-0 12.Nge2=+) 12.Rb1 (12.a5 0-0=) 12...Nbd7 13.Ba3 f4 14.Nge2 fe3 15.fe3 0-0 16.g4 g5 (better 16...a6=+) 17.h4? (better 17.Bg2=) 17...Ng4-+ 18.Ne4 (18.Bh3 gh4 19.Bg4 Bg4 20.Rh4 Nf6-+) 18...Bf5 19.Ng5 Ndf6 (19...Ba5 20.Bb4 Bb4 21.Qb4 Ne3 22.Kd2-+) 20.Rg1 (20.b6 Bd8 21.Rg1-+) 20...h5 (20...Re8 21.e4 Ne4 22.bc6 bc6 23.Ne4 Re4 24.Qb7-+) 21.Kd2? (21.Rc1 Bh2 22.Rg3 Bg3 23.Ng3 Ne3-+) 21...Ba5 (better 21...Re8!? 22.Qa2 Ne3 23.bc6 bc6-+) 22.Kc1 (22.Bb4 Bb1 23.Ba5 Bf5=+) 22...Bb1 23.Qb1 (better 23.Kb1!? Qf5 24.Ka2-/+) 23...Qe8-+ (23...Ne3 24.Qg6 Kh8 25.Qh6 Kg8 26.Ne6 Kf7 27.Rg7 Ke6 28.Qe3 Ne4 29.Qh6 Rf6 30.Bh3) 24.Rg3? (better 24.Qd3 Be1 25.Nh3-/+) 24...Ne4 25.Bg2 (25.Kb2 Ng5 26.hg5-+) 25...Kh8 (better 25...Ng5 26.hg5 Bc7-+) 26.Ne4=+ de4 27.Qe4? (27.Bb2 Rf2 28.d5 Kg8-/+) 27...Qe4?? (better 27...Rf1! 28.Kc2 Rf2-+) 28.Be4=+ Rf1 (28...Rae8 29.bc6 Re4 30.cb7 Ne3 31.Rf3=) 29.Kc2= Re8 (better 29...Re1 30.Bd3 Rf8=) 30.Bg2?? (better 30.bc6 bc6 31.Bc6 Ne3 32.Kb3 Rb8 33.Bb5=) 30...Re1 (30...Rf2 31.Kd3 Rg2 32.Rg2 Re3 33.Kc2 Ra3 34.bc6 bc6 35.Kb2 Ra4 36.Rg3-+) 31.Kd3? (31.Nf4 Ne3 32.Kb3-+) 31...Ra1 (better 31...Rd1 32.Kc4 Ne3 33.Re3 Re3 34.bc6 bc6 35.Bc6 Ra3 36.Nf4-+) 32.Bb2?? (better 32.Bc1 Rd8 33.bc6 bc6 34.Rg4 (worse 34.Bc6 Ne5 35.Ke4 Nc6-/+) 34...hg4 35.Bc6=+) 32...Ra4?? (better 32...Rd1 33.Kc4 Rd2-+) 33.d5 (better 33.bc6!? Ra2 34.Bc3 (34.cb7 Rb2 35.Nf4 Nf2 36.Kc4 Rb4 37.Kd5 Rb7-/+) 34...Nf2 35.Kc4 Re2 36.Ba5 bc6 37.Bc6+-) 33...Kh7 34.d6?? (34.dc6 Ra2 35.Kc2 A) worse 35...Re3 36.Re3 (36.cb7?? Re2 37.Kd3 Rd2 38.Ke4 Bc7-+) 36...Ne3 37.Kb1 Rb2 38.Kb2 bc6 39.Bc6+-; B) 35...Bc7 36.Rg4 hg4 37.cb7 Re3=) 34...Rb4?? (better 34...Ra2 35.Bc3 Bc3 36.Kc3 Re2 37.bc6 Rg2=+ (37...R2e3?? 38.Re3 Re3 39.Kb4 bc6 40.d7+-; 37...R8e3?? 38.Re3 Re3 39.Kb4 a5 40.Ka4 bc6 41.d7+-)) 35.Bd4= (35.bc6 Rb2 36.cb7 Ne5 37.Kd4 Rd2 (37...Re2?! 38.Be4 Kh6 39.Rg2-+) 38.Ke4 Ng4 (38...Re2?! 39.b8Q Rb8 40.Ke5-+) 39.Kf5 Re2-+) 35...Rb3 (35...Rb5 36.Nc3 Rb4 37.Be4 Kh6 38.Rf3=+) 36.Nc3 Bc3 37.Bc3 Rb5 38.Be4 (38.Kd4!?+=) 38...Kh6 (38...Re4 39.Ke4 Rc5 40.Bd4=+) 39.Rf3= Rc5 40.Bd4? (better 40.d7!? Rd8 41.Rf7 Rd7 42.Rd7 Nf2 43.Kd4 Ne4 44.Rb7 Rc3 45.Re7=) 40...Rc1?? (40...Ne5 41.Be5 Rce5-/+ (41...Ree5?! 42.Rf7 Rcd5 43.Bd5 Rd5 44.Kc3=)) 41.Rf7 (41.Rf7 Rd1 42.Kc2 Re4 43.Kd1 Ne3 44.Be3 Re3 45.Kc2=) 1-0. dale70 (2185) - vasmike (2145), Rated Standard game, lichess.org, 2015.

6.c4 c6 7.bc6 bc6 8.cd5 cd5 9.Bb5 Kf8+=.

6.c4 Be6 7.c5 Bf8 8.Ne2 Bg4 9.Nbc3 Ne7+=.

6.c4 f5 7.cd5 Nf6 8.Nc3 Bb4 9.Bc4 Nd5=.

6.c4 Bf5 7.Nc3 Bb4 8.Nge2 Ne7 9.Qa4 Qd6+=.

6.Qh5 g6 7.Qd1 Be6 8.a4 Nd7 9.Nd2 f5 10.c4 c6 11.Qb3 (11.Nh3 Nh6=) 11...Ngf6 (11...Qb8 12.Nh3 Ngf6 13.Ba3=) 12.h4 (12.c5 Bf8+=) 12...0-0 (12...f4 13.c5 fe3 14.Qe3=+) 13.Nh3 (13.c5 Be7=) 13...Ng4 (13...Rc8 14.Ng5 Qe7 15.c5=) 14.g3 (14.h5 g5+=) 14...cb5 (14...Ndf6 15.c5 Bc7 16.Nf4=) 15.ab5 a6? (better 15...Ndf6!?=) 16.Ng5+/- Qe8 (16...Bf7 17.c5 (17.cd5?! Qb8+/-) 17...Be7 18.Nf7 Rf7 19.h5+-) 17.Ne6 (17.cd5 Bf7+-) 17...Qe6+/- 18.cd5 Qe7 19.ba6 ba6 20.Ba6 Rab8 21.Qc2 Rb6 (21...Ngf6 22.Rb1+/-) 22.Be2 (22.Nc4 Rbb8+-) 22...Rfb8 (22...Ndf6 23.h5! g5 24.Bc3+/-) 23.Ra2 (23.Bc3!? Ngf6 24.h5+/-) 23...Ndf6+= 24.Nc4 Bb4 25.Kf1 Rc8 26.Qa4 Rb7 (26...Rbb8 27.h5 Nd5 28.hg6 hg6 29.Qa7+/-) 27.d6! Bd6 28.Nd6 Qd6 29.Bc4 Kg7 30.d5 (30.Ba3 Ne3 31.fe3 Qg3 32.Bc1-/+) 30...Rb4=+ 31.Bf6 Nf6 32.Qa7 Rc7 33.Qa8?? (better 33.Qa6 Qd7 34.Be2=+) 33...Rbc4-+ (worse 33...Rcc4 34.Ra7 Kh6 35.Qh8 Qg3 36.Qg7 (36.fg3?? Rc1 37.Kg2 Rb2 38.Kh3 Rh1) 36...Kh5 37.Ra1-+ (37.fg3 Rc1 38.Kg2 Rb2 39.Kh3 Rh1)) 34.Kg2 Qd5 35.Qd5 (35.Rha1 Qa8 36.Ra8 Rc2-+) 35...Nd5 36.Rd1 (36.Rha1 Rc2 37.Ra3 Nb4-+) 36…Nc3 (36...Nc3 37.Rda1 Na2 38.Ra2 Rc2 39.Rc2 Rc2-+) 0-1. zembelek1 (2150) - topalov_36 (2235), Rated Classical tournament, lichess.org, 2016.

5.e3 Be6

6.Nd2 ed4 7.Bd4 Nh6 (7...a6 8.c4 dc4 9.Qa4 c5 10.Bc3 Nd7=; 7...Ne7 8.Bd3 a6 9.Qb1 b6 10.c4 dc4=; 7...Nd7 8.Ngf3 Ne7 9.Bd3 0-0 10.c4 Ne5=; 7...Qd7 8.Ngf3 a6 9.a4 Ne7 10.Bd3 Bf5=) 8.Bd3 a6 9.Ngf3 ab5 10.Bb5 c6 =.

6.Nd2 e4 A) 7.Ne2 Ne7 (7...Nh6 8.c4 c6 9.Nc3 Qd7 10.Qb3 Be7+=; 7...a6 8.c4 dc4 9.Nc3 Bb4 10.Nde4 c6=; 7...Qd7 8.c4 dc4 9.Nc3 Bb4 10.Qa4 Bc3+=) 8.c4 c6 9.Nc3 0-0 10.bc6 bc6=; B) 7.c4 Qd7 (7...Bb4 8.Ne2 Qd7 9.Bc3 Bd6 10.c5 Be7+=; 7...f5 8.Nh3 Nf6 9.c5 Be7 10.Be2 0-0+=; 7...Nh6 8.Qb3 Be7 9.cd5 Bd5 10.Bc4 Bc4+=; 7...c6 8.Qb3 dc4 9.Bc4 Bc4 10.Nc4 Ne7+/–) 8.c5 Be7 9.Qh5 g6 10.Qd1 Nh6=.

6.Nd2 fe5 7.Be5+= Nf6 8.Bd6 Qd6 9.Nf3 0-0 10.Nc3 a6 +=.

6.Nd2 Ne7= 7.c4 (7.de5 fe5 (7...Be5 8.Be5 fe5 9.Qh5 Ng6 10.Ngf3 Qd6=) 8.Ngf3 Nd7 9.Ng5 Bg8 10.Bd3 Nf6=) 7...dc4 (7...ed4 8.Bd4 dc4 (8...c5 9.bc6 Nbc6 10.c5 Be5=) 9.Qh5 (9.Bc4 Bc4 10.Nc4 Bb4 11.Kf1=) 9...Bf7 10.Qg4 Rg8=) 8.Bc4 (8.de5 Bb4 9.Rc1 A) 9...c3 10.Bc3 Bc3 11.Rc3 Nd5+/– (11...fe5? 12.Qh5 Bf7 13.Qe5+-); B) 9...fe5 10.Bc4 Bd5+=) 8...Bc4 9.Nc4 Bb4 10.Nd2 (10.Kf1 e4=) 10...ed4+= 11.ed4 (11.Bd4 Qd5+=) 11...Qd5–/+ 12.Ngf3 Qb5 13.Rb1 Qd3 (13...Nd5 14.a4 Qa6 15.Qb3–+) 14.Ba1 (14.a3 Bd2 15.Nd2 Nbc6–/+) 14...Qe4 15.Kf1 Bd2 16.Nd2 Qd5 17.Qa4 Kf7 (17...Nd7!?–/+) 18.Rb5= Qc6 19.Qb3 Kf8 20.Bb2 (20.Rb7 Nd7 21.Qf3 Nd5+=) 20...Nd7 21.Ba3 a6 (21...Nb6+=) 22.Be7 (better is 22.Rb7 Nb6 23.Qf3=) 22...Ke7–/+ 23.Qe3 Kd8 24.Rb1 Re8 25.Qd3 b5 26.h4 (26.Qh7 Qd5 27.Qc2 Qd4–/+) 26...Nb6 (26...Qd5 27.Qf3 Qf3 28.Nf3–/+) 27.Rh3 (27.Qh7 Qe6 28.Qc2 Qe2 29.Kg1 Nc4–/+) 27...Nd5 (27...Qd5 28.Nb3 Qc4 29.Rc1 Qd3 30.Rd3–/+) 28.Qf3 (28.Qh7 Re7 29.h5+=) 28...Nb4 (28...Rb8 29.Kg1–/+) 29.Qc6 (29.Qb3!? a5 30.a3=) 29...Nc6–/+ 30.Rd3 Kd7 31.Rbb3 (31.d5 Ne5 32.Rd4 c5 33.dc6 Kc7–/+) 31...Rad8 32.Nf3 Kc8 33.Re3 Re3 34.fe3 Na5 35.Rc3 Nc4 36.Ke2 Re8 37.Rb3 Kb7 38.Rd3 c6 (38...c5 39.dc5 Kc6 40.Nd4 Kc5 41.g4–/+) 39.Ne1 (39.Nd2!? Nd2 40.Rd2–/+) 39...f5–+ 40.g3 Re4 (40...g6 41.Nf3–+) 41.Nf3–/+ Rg4 42.Kf2 Nd6 43.Nd2 a5 44.Rc3 g6 45.Rc5 Kb6 46.Re5 f4 (better is 46...Ne4 47.Ne4 Re4–/+ (worse is 47...fe4 48.Re6+=)) 47.ef4+= Nf5 48.Ne4 h5 (48...Ng3 49.Kf3 Ne4 50.Kg4+/–) 49.d5 (49.Nf6 Rg3 50.Rf5 Ra3 51.Nd7 Kc7+-) 49...cd5 50.Rd5 Ng3 51.Ng3 Rf4 52.Ke3 Rh4 53.Rd6 Kc5 (53...Kc7 54.Rg6 Ra4 55.Rg7 Kc6 56.Rg6 Kd7 57.Nh5 Ra2 58.Nf6 Kd8 59.Kd4+=) 54.Rg6= Rg4 (54...Kb4!? 55.Ne2 Ka3=) 55.Ne4+= Kb4 56.Rg4 (better is 56.Rc6+=) 56...hg4+= 57.Kf4 Ka3 58.Nd6 Ka2 59.Nb5 Kb3 (59...Kb2 60.Kg4 a4 61.Kf4=) 60.Kg4 Kb4 (60...a4 61.Kf4=) 61.Nd4 (61.Kf3!?=) 61...Kc4+= 62.Nc2 a4 63.Kf4 Kc3 64.Na3 ½–½. Pohl,Ursula – Domsgen Hoelzlein,Christina, DDR–ch (Women), 1968.

6.Nd2 Nh6 7.c4 0-0 (7...ed4 8.Bd4 c5 9.Bc3 Nf7 10.cd5 Bd5=; 7...Nd7 8.c5 Bf8 9.c6 bc6 10.bc6 Nb8+=) 8.cd5 Bd5 9.Bc4 Bb4 10.Qb3 Bd2 =.

6.de5!? Bb4 7.Bc3 (7.Nd2; 7.c3) 7...Qe7 (7...Bc3 8.Nc3 c5 9.Nf3 fe5 10.Ne5 Nf6+/–; 7...Bc5 8.Nh3 Qd7 9.Nf4 Qf7 10.Bd3 f5+/–; 7...a5 8.a3 Bc3 9.Nc3 Nd7 10.Nf3 fe5+/–; 7...Be7 8.Nf3 fe5 9.Be5 Nf6 10.Nd4 Bg4+/–) 8.a3 Bc3 9.Nc3 c6 10.Nf3 Bg4 +=.

6.de5!? Bc5 A) 7.Nf3 Nd7 (7...Bb4 8.Bc3 Bc3 9.Nc3 fe5 10.Ne5 Nf6+/–; 7...Qe7 8.Nc3 Bb4 9.a3 Ba5 10.Be2 fe5+/–; 7...a6 8.Nd4 Bd4 9.ed4 Nh6 10.Qh5 Nf7+/–; 7...fe5 8.Be5 Nf6 9.Be2 Nbd7 10.Bf4 Ne4+=) 8.Nd4 Qe7 9.Ne6 Qe6 10.ef6 Ngf6+=; B) 7.Be2; C) 7.Bd4; D) 7.Bd3 Nd7 (7...Qe7 8.Nf3 Nd7 9.0-0 fe5 10.Ne5 Ne5+/–; 7...Bb4 8.Nc3 Qe7 9.Nf3 fe5 10.Ne5 Qf6+/–) 8.Qh5 Bf7 9.ef6 Bb4 10.Nd2 Ngf6+=.

6.de5+= fe5 7.Be5 Nf6 (7...Be5 8.Qh5 A double attack) 8.Nf3 Bg4 9.Bd6 Qd6 10.Nbd2 0-0 11.Bd3 Nbd7 12.0-0 Nc5 13.Qb1 (13.h3 Bf3 14.Nf3 Rae8+=) 13...Bf3 (13...Nd3 14.cd3 Bf3 15.Nf3=) 14.Nf3+= (14.gf3?! a6=) 14...Ng4 (14...Nd3 15.cd3 Ng4 16.h3 Rf3 17.hg4+=) 15.h3 (15.Qb4 Nf6+/–) 15...Rf3 16.hg4 Rf6 17.Qb4 (17.g5 Re6+=) 17...Raf8= 18.g5 R6f7 19.Qh4 (19.g6 Rf2 20.Rf2 Rf2+=) 19...Nd3 20.cd3 Qg6 21.Rad1 (21.Qd4!? Rf5 22.f4+= (worse is 22.Qa7 Rg5 23.g3 Rg3 24.fg3 Qg3 25.Kh1 Qh3 26.Kg1 Qg3 27.Kh1 Qh3 28.Kg1 Qg3=)) 21...Rf5+= 22.f4 (22.Rc1 Rg5 23.Qh3 d4+= (23...Qd3 24.Qe6 Kh8 25.Qe7 Rg2 26.Kg2 Qg6 27.Kh2 Qh5 28.Kg1 Qg4 29.Kh1 Qf3 30.Kh2 Qh5 31.Kg1 Qg4 32.Kh2 Qh5=)) 22...Qb6= 23.Rf3 g6 (23...Qg6 24.Rc1 R5f7 25.Rc3=) 24.Rh3 R5f7 25.f5 gf5 (25...Re8!? 26.fg6 Qg6+=) 26.g6!+/– Rg7 (26...hg6 27.Qh8 A beautiful mate combination) 27.gh7 Kh8 28.Qb4 (28.Rf1 Qg6 29.Rh2 Qb6+=) 28...Rff7 29.Qh4 (better is 29.Qf4+/–) 29...Rh7?? (better is 29...Rf8=) 30.Qd8+- Kg7 31.Rg3 Qg6 32.Rg6 (32.Rg6 Kg6 33.Qd5+-) 1–0. Kreuzer,Uwe – Allgayer,C, Bez.Einzel–M, 1990.

6.de5+= Be5 7.Be5+/– fe5 8.Nf3 (better is 8.Qh5!? Kd7 9.Qe5+/–) 8...Qd6 9.Be2 Nd7 10.0-0 0-0-0 (10...Ngf6 11.a4+=) 11.Nc3 Ngf6 12.a4 Qb4 13.Qd2 Qg4 (better is 13...Bg4!?=) 14.Ne5!+/– Qf5 (14...Ne5 15.Bg4) 15.Nd7 Rd7 16.Bd3 Qg5 17.Qc1?? (better is 17.b6 cb6 18.Nb5+/–) 17...Bh3–/+ 18.g3 Bf1 19.Qf1 Rd6 (19...Qe5!? 20.Ne2 Rf8–/+) 20.a5+= d4 21.ed4 Rd4 22.a6 b6 23.Re1 (23.Qg2 Nd5 24.Ne2 Rd3 25.cd3 Kb8+/–) 23...g6 (23...Rhd8 24.Qg2 Nd5 25.Nd5 R8d5 26.f4+/–) 24.Ne4 (better is 24.Qg2 Nd5 25.Qh3 Kd8 26.Ne4=) 24...Ne4+= 25.Be4 Qd2 26.Bb7 Kd8 (26...Kb8 27.Qe2+=) 27.Be4 Re8 28.f3 Re5 29.Re2 Qb4 30.Bc6 Qa4?? (better is 30...Re7+=) 31.Re5 Qc2 32.Re8 1–0. Neffgen,Dieter – Dickey,Chris, remoteschach.de, 2003.

6.Nd2 Nd7

7.c4 Bb4 8.cd5 Bd5 9.de5 fe5 10.a3 Ba5 =.

7.c4 c5 8.Qb3 (8.cd5 Bd5 9.Bc4 Bc4 10.Nc4 Bc7+=) 8...dc4 (8...cd4!? 9.ed4 Ne7=+) 9.Bc4+= Bc4 10.Nc4 Be7 (10...Qe7!? 11.de5 Ne5 12.Be5 Be5+=) 11.de5+/- fe5 (11...Ne5 12.Be5 fe5 13.Rd1+/-) 12.Be5 (12.Rd1!? Qc8 13.Nf3+-) 12...Ne5+/- 13.Ne5 Qa5 14.Kf1 Nh6 15.Ngf3 0-0-0?? (15...a6 16.b6+/-) 16.g3 (better 16.Qe6 Kb8 17.Qe7 Qb5 18.Kg1+-) 16...Bf6 17.Kg2 (17.Rc1 Qc7 18.Qa3 b6+-) 17...Rhe8 18.Nc4 Qc7 (better 18...Qc3 19.Qa4 Kb8+/-) 19.Rhd1?? (better 19.b6 ab6 20.Nb6 Kb8 21.Rac1+-) 19...Ba1= 20.Ra1 b6 (20...Qe7 21.Rc1 g5 22.Nfe5=+) 21.a4= Qb7 22.a5 g5 23.h3 Nf5 (23...g4 24.hg4 Ng4 25.ab6 Rf8+= (25...ab6? 26.Nb6 Qb6 27.Ra8 Kb7 28.Ra6+-)) 24.ab6+= ab6 25.Ra8 Kc7 26.Rd8 Rd8 27.Nce5 (better 27.Qc2 Qd5 28.e4+=) 27...Rd6?? (better 27...Nd6+=) 28.Qf7+- Kb8 29.Qf5 Rd8 (29...Qc7+-) 30.Nc6 (30.Nc6 Kc7 31.Ng5 Qc6 32.bc6 Kc6 33.Nf7+-) 1-0. zembelek1 (2185) - topalov_36 (2115), Rated Classical tournament, lichess.org, 2016.

7.c4 ed4 8.cd5 Bd5 9.Bd4 Ne7 10.e4 Bf7=.

7.c4 Nh6 8.c5 Bf8 9.c6 bc6 10.bc6 Nb8+=.

7.de5 fe5 8.Ngf3 Ngf6 9.c4 0-0 10.Ng5 Bf5=.

5.e3 Ne7

6.Nc3 0-0 7.g3 (7.de5 Be5 8.Be2 a6=+) 7...c6 8.bc6 (8.de5 fe5 9.Bg2 Qb6=+) 8...bc6 (8...Nbc6!? 9.Nge2–/+) 9.Bg2 Na6 (9...Nd7 10.Rb1–/+) 10.Nge2=+ Rb8 11.Rb1 Bg4 12.0-0 ed4 (12...Qa5 13.de5 fe5 14.h3–/+) 13.ed4 (13.Qd4 Qd7=+) 13...Bf5 14.a3 Qa5 15.Qc1 (15.Qd2!?=+) 15...Rb6–/+ 16.Ra1 Rfb8 17.Ra2 h6 18.Ba1 Kh7 (18...Nc7 19.Nf4–/+) 19.Re1 Nc7 20.f4 (20.Nf4 Ng6 21.Ng6 Kg6–/+) 20...Ne6 (20...c5 21.h3–/+) 21.h3 Nc7 (21...h5 22.Qd2–/+) 22.Kh1 (22.Qd2 c5–/+ (22...Ba3?! 23.g4 Bd7 24.Qd3 Kh8 25.Qg3+=)) 22...c5 (22...Bd7 23.Qd2 Nf5 24.Ne4 Qd2 25.Nd2–+) 23.dc5 Bc5 (23...Qc5?! 24.Qd2=+) 24.g4 Bc8 25.f5 (25.Qd2!? Ba6 26.Nd4 Bd4 27.Re7–+ (27.Qd4? Nc6 28.Qd2 Bc4–+)) 25...Ba6–+ 26.Nf4 (26.Rd1 Nc6 27.Qf4 Ne5–/+) 26...Bd6 (better 26...Bc4 27.Nd3 Ba2 28.Na2 Ba3–+) 27.Ne6? (better 27.Nh5–+) 27...Ne6 28.fe6 (28.Re6 d4 29.Rd6 Rd6–+ (29...dc3?! 30.Rb6 Rb6 31.a4–+)) 28...Bc4 29.Rb2 (29.Bf1 Bf1 (worse 29...Ba2 30.Na2 Rb1 31.Bc3 Rc1 32.Ba5 Re1 33.Be1–+) 30.Rf1 d4–+) 29...Ba3 30.Qd2 (30.Rb6 Bc1 31.Rb8 Qa1 32.Rb7 Qc3 33.Rc1–+) 30...Bb2 31.Bb2 Rb2 32.Rd1 (32.Qe3 Kg8 33.Rc1 R8b6–+) 32...Rd8 (better 32...R8b6 33.Re1–+) 33.Ne2 (33.Qe3 Rc2 34.Nb1 Re2–+) 33...Qd2 34.Rd2 Be2 35.Re2 Rc8 36.Rd2 (36.Bf1 Kg8–+) 36...Rcc2 37.Rd1 Rg2 38.Ra1 (38.Rb1 Rh2 39.Kg1 Rbg2 40.Kf1 Ng6 41.Rb2 Rb2 42.Kg1 Rhc2 43.e7 Rb1) 38...Rh2 39.Kg1 Rbg2 40.Kf1 Rh1 (40...Rh1 41.Kg2 Ra1–+; 40...Ng6 41.Ra7 Nf4 42.Rg7 Kg7 43.e7 Rh1) 0–1. Bushkova,Vera – Sergeev,Rudolf, Ivanovo Championship, 2009.

6.c4 Bb4 7.Nc3 (7.Bc3 Bc3 8.Nc3 ed4 9.Qd4 c6+=) 7...c6 (7...ed4 8.Qd4 c5 9.Qd2=) 8.a3 Ba5 9.a4 (9.de5 fe5 10.cd5 cd5=) 9...cb5 (9...0-0 10.Nf3+=) 10.ab5= Qc7 (10...ed4 11.Qd4 Be6 12.Nf3=) 11.Qa4+= b6 12.Nf3 (12.Rc1 ed4 13.ed4 0-0=) 12...Be6 (12...0-0 13.Ra3=) 13.Nd2 (13.c5 ed4 14.Nd4 Bc3 15.Bc3 Qc5+=) 13...ed4 14.ed4 Qf4 (14...0-0 15.Bd3=) 15.cd5 (better is 15.c5!?+/–) 15...Nd5+= 16.Rc1 Kf7 (16...Bb4+=) 17.Rc2 (better is 17.g3 Qf5 18.Bg2=) 17...Re8–+ 18.Bc4?? (18.Be2 Nb4 19.0-0 Nc2 20.Qc2–/+) 18...Nc3 19.Bc3 Bc4 20.Kd1 Be2 21.Kc1 Bc3 22.Rc3 Nd7 23.Re1 Rac8 24.Rc8 Rc8 25.Kb2 Qd2 0–1. Sahantuerk,A – Bindrim,Peter, Bremen–ch U17, 1992.

6.c4 ed4 7.Bd4 c5 8.Bb2 (8.Bc3= Be6 9.Qh5 g6 10.Qh4 0-0 11.Bf6 Qa5 12.Bc3 Qa4 13.Bd3=; 8.bc6 Nbc6 9.Nf3 Be6 10.Nbd2 Qa5 11.Qb3 Rc8 12.Bc3 Qc7 13.cd5=) 8...Be6 9.Qh5 g6 10.Qh4 g5 11.Qh6 Ng6 12.Bd3 Ne5 13.Be5 +=.

6.Nd2 Bd7 7.c4 dc4 (better 7...ed4!? 8.Bd4 0-0 9.cd5 a6= (9...Nd5? 10.Bc4 c6 11.e4+-)) 8.Bc4 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 ed4 12.Bd4 Nf5 13.Ngf3 Nd4 14.Nd4 Qe7 15.Qa2 Bb4? (15...c6!?+/-) 16.0-0 Kd8?? (16...c5 17.N4f3 Kd8 18.Qa7+-) 17.N2f3 (better 17.Qa8 Kc8 18.Bd5+-) 17...Kc8 18.Rb1 Bc5 19.Bd5 Bd4?? (19...Qd6 20.Rc1 Re8 21.Qc4+-) 20.Nd4 (better 20.Qa8 Be6 21.Bb7 Kd7 22.Bc6 Nc6 23.Qc6 Kd8 24.Rd1+-) 20...Qe5 21.Qc4 Rd8 22.Nf3 Qd6 23.Rc1 Bb5 24.Bb7! (24.Qb5?! Qd5 25.Qa4 Na6=+) 24...Kb7 25.Qb5 Kc8 26.h3 Nd7 27.Nd4 Nb6?? (27...Qb6 28.Qa4 Ne5+-) 28.Rc6 Qd5 (28...Qe5 29.Qb6 Rd4 30.ed4 Qe1 31.Kh2 Qe7 32.Qa6 Kd7+-) 29.Qb6 (29.Qb6 Qe5 30.Rc5+-) 1-0. zembelek (2100) - thesaluki (2145), Rated Classical tournament D6uNOc2D, lichess.org, 2016.

6.de5 fe5 7.c4 A) 7...Be6 8.cd5 Bd5 (8...Nd5 9.Be5 Bb4 10.Nd2 0-0 11.Ngf3 Nd7+=) 9.Nc3 Bf7 10.Nf3 Ng6 11.Ne4 0-0+=; B) 7...Bf5 B1) 8.Nc3 Be6 (8...c6 9.bc6 bc6 10.Nf3 a6 11.Qd2 Ra7=; 8...Bb4 9.Qb3 Qd6 10.a3 Ba5 11.cd5 Nd7=) 9.cd5 Nd5 10.Nf3 Bb4 11.Qc2 Nd7=; B2) 8.cd5; B3) 8.Nf3 Bg4 (8...e4 9.Nh4 Be6 10.Bg7 Rg8 11.Qh5 Ng6+=; 8...Bb4 9.Bc3 Qd6 10.a3 Bc3 11.Nc3 dc4+=) 9.Be2 dc4 10.Ne5 Be2 11.Qe2 Be5+=; C) 7...Bb4 8.Nd2 (8.Bc3; 8.Nc3) 8...Ng6 9.Rc1 d4 10.ed4 ed4 11.Qe2 Ne7+=; D) 7...d4 8.ed4 (8.Nf3) 8...Bb4 9.Nd2 ed4 10.Qh5 Ng6 11.Qe2 Be7+=; E) 7...dc4 8.Bc4 (8.Nf3; 8.Nd2) 8...Ng6 (8...Bf5 9.Nf3 Ng6 10.0-0 Rf8 11.Nbd2 a6+=; 8...a6 9.Qf3 Rf8 10.Qh5 g6 11.Qh7 ab5+=; 8...Nd7 9.Nf3 Ng6 10.Nbd2 Qe7 11.Qc2 Nc5+=; 8...Nf5 9.Nf3 Qf6 10.0-0 a6 11.Nbd2 ab5+=) 9.Nf3 a6 10.Nc3 ab5 11.Nb5 Nc6+=; F) 7...c6 F1) 8.cd5 cd5 9.Qh5 g6 10.Qh4 Qa5 11.Bc3 Qc7+=; F2) 8.c5 Bc5 (8...Bc7 9.Qh5 g6 10.Qh4 Bf5 11.Nf3 Nd7=) 9.Qh5 Ng6 10.Bd3 e4 11.Bg7 Kf7–+; F3) 8.Qh5 g6 9.Qg5 h6 10.Qh4 Nd7 11.Nf3 Qa5=; F4) 8.Nf3 Bg4 (8...e4 9.Nd4 0-0 10.Nc3 Be5 11.cd5 cd5=; 8...Nd7 9.Nc3 Qa5 10.Qd2 0-0 11.Rd1 Nb6=) 9.cd5 Nd5 10.h3 Bf3 11.Qf3 Bb4=.

6.de5 fe5 7.Nf3 e4 8.Nd4 (8.Bg7? Rg8 9.Bd4 ef3 10.Qf3 Bg4–+) 8...0-0 9.c4 c6 10.Nc3 Be5 11.cd5 cd5 12.Qb3 Bd4 13.ed4 (13.ed4 Rf7 14.Rc1+=). Plock,Joerg – Pech,Jaroslav, corr or02–025, 2002.

6.de5 fe5 7.Qh5 g6 8.Qg5 (8.Qh4 Nd7 (8...Bf5 9.Nf3 Nd7 10.c4 c6 11.Nbd2 Qa5=; 8...0-0 9.Nf3 e4 10.Ng5 h5 11.Qe4 de4+=; 8...Qd7 9.Nf3 Qe6 10.e4 c6 11.Nbd2 Nd7=) 9.c4 c6 10.cd5 cd5 11.Nf3 Qc7+=; 8.Qd1 c6 (8...Be6 9.Nf3 Nd7 10.c4 a6 11.ba6 ba6=; 8...0-0 9.c4 c6 10.Nc3 Be6 11.Nf3 Qa5=) 9.Nf3 Bg4 10.h3 Bf3 11.Qf3 Qa5+=; 8.Qe2 a6 (8...Bf5 9.Nf3 Nd7 10.c4 0-0 11.cd5 Nd5=; 8...Be6 9.Nf3 Bg4 10.Nbd2 0-0 11.e4 c6=; 8...0-0 9.e4 d4 10.Nf3 c5 11.Nbd2 Kg7=; 8...Rf8 9.c4 Be6 10.Nd2 dc4 11.Ngf3 a6=) 9.Nf3 Bg4 10.e4 Nd7 11.ed5 Nd5+=) 8...0-0 (8...Bf5 9.Nf3 Nd7 10.c4 h6 11.Qg3 e4=; 8...h6 9.Qh4 Bf5 10.c4 Nd7 11.Nd2 g5=; 8...Rf8 9.Nf3 e4 10.Nd4 c5 11.bc6 Nbc6+=; 8...Nd7 9.c4 0-0 10.cd5 Nd5 11.Qd8 Rd8=) 9.g4 (9.e4 Be6= 10.Nd2 Nd7 11.Ngf3 Rf4=) 9...Be6 (9...a6 10.a4–/+ Be6 11.Nd2 ab5–/+) 10.Nh3 (10.Nd2 Nd7 11.Ngf3 Rf7+=) 10…Nd7 (10...Qd7 11.Be2 a6–/+). Gall,Zdenek – Willen,Anders, corr 3GMMsemi–10, 1998.

6.Nf3 e4 7.Nfd2 0-0 (7...c6 8.c4=) 8.c4 c6 9.Nc3 (better is 9.Qb3 f5 10.Nc3=) 9...Nd7 (better is 9...f5!?=) 10.cd5+/– cd5 11.Qb3 Nb6 (11...Kh8 12.Nd5 f5 13.Ne7 Be7 14.Be2+/–) 12.Nde4 Bb8 (12...Bc7 13.Nc5+/–) 13.Be2 f5 (13...Kh8 14.Nc5+/–) 14.Nd2 (14.Nc5 f4 15.e4 Kh8+-) 14...Kh8 (14...Be6 15.0-0+/–) 15.f4 (15.a4 f4 16.a5 Nc4 17.Nc4 dc4 18.Qc4 fe3 19.fe3 Nf5+/–) 15...g5 (15...Be6 16.a4+/–) 16.g3 (16.fg5 Ng6 17.Nf3 Re8+-) 16...Ng6 (16...gf4 17.gf4 Re8 18.Rg1+/–) 17.Nf3 (17.a4 gf4 18.ef4 Be6+-) 17...Qe7 (17...gf4 18.ef4 Be6 19.0-0+-) 18.Ne5 (18.Ba3 Qe3 19.Bf8 g4+-) 18...gf4 (18...Ne5 19.fe5 Qf7 20.Ba3+-) 19.Ba3 (19.gf4?! Be5 20.fe5 Qh4 21.Kd1 f4+=) 19...Bd6 20.Bd6 Qd6 21.ef4 Be6 22.0-0 (22.Na4 Rac8+-) 22...Rac8 23.Rac1 (23.Rad1 Rfe8+-) 23...Nc4+/– 24.Rfd1 Rg8 (24...Nce5 25.fe5 Qe7 26.Bf3+-) 25.Kh1+- Rc7 (25...Ne3 26.Re1 Ne5 27.fe5+-) 26.Bd3 (26.b6!? Qb6 27.Bc4 dc4 28.Qb6 ab6+-) 26...Rgc8 (26...Nge5 27.fe5 Qd7 28.Bc4 Rc4 29.Ne2+-) 27.Ne2 (27.Bc4 dc4 28.Qa4 a6+-) 27...Kg8 (27...Qb6 28.Bc4 dc4 29.Qf3+-) 28.Rc3 Na5 (28...Qb6 29.Rdc1+-) 29.Qa3 Qa3 30.Ra3 Ne5 (better is 30...b6!?+-) 31.fe5 (31.Ra5?! Nd3 32.Rd3 Bd7+=; 31.de5?! Nc4 32.Ra7 Nb2+-) 31...b6 32.Nf4 (32.Rf1 Nc4 33.Bc4 dc4+-) 32...Kf7 33.Rf1 (33.Ne6?! Ke6 34.Rf1 Rf7+-) 33...Rc1 34.Kg1 (34.Rc1 Rc1 35.Kg2 Rc7+-) 34...R8c7 (34...Ke7 35.Rc1 Rc1 36.Kf2+-) 35.Ne2 (35.Rc1!? Rc1 36.Kf2 Rc7+-) 35...Rf1 36.Kf1 Nc4 37.Rc3 Nd2 38.Kf2 (38.Kg2 Rc3 39.Nc3 Ne4+-) 38...Rc3 39.Nc3 Ne4 40.Be4 fe4 41.Ke3 Kg6 (41...Ke7 42.Ne2+-) 42.Kf4 (42.Ne2 Kf7+-) 42...h6 (42...Kf7 43.g4+-) 43.a4 (43.Ke3 Kf7+-) 43...Kf7 44.Na2 Bc8 45.Nb4 Bb7 (45...Ke6 46.h4+-) 46.g4 (46.Nc6 Ke8 47.Na7 h5+-) 46...Ke6 (46...Ba8 47.Nc2+-) 47.Nc6 Bc6 (47...Kd7 48.Na7 Kd8+-) 48.bc6 a6 (48...Ke7 49.h4 a6 50.g5 hg5 51.hg5+-) 49.h4 White plans g5 49...b5 50.ab5 ab5 51.g5 hg5 52.hg5 b4 53.g6 b3 54.c7 (54.c7 Kd7 55.g7 Kc7 56.g8Q+-) 1–0. Melich,Jindrich (2050) – Houska,Jiri (1840), Klatovy op–A, 2000.

6.Nf3 Bg4 7.h3 Bf3 8.Qf3 =.

6.c4 c6

7.Qb3 cb5 (7...ed4 8.ed4 0-0 9.Bd3=+) 8.Qb5 (8.cd5 Nd5 9.Bb5 Nc6 10.de5 fe5=) 8...Qd7 (8...Nbc6 9.de5 a6 10.Qb3 Be5 11.Be5 fe5 12.Nf3=) 9.Qd7 Bd7 10.cd5 Nd5 11.a3 (11.de5 fe5 12.Nd2 Nb4=) 11...Nc6 12.Nf3 e4 (12...ed4 13.Nd4 Rd8 14.Nd2=) 13.Nfd2= f5 14.Bc4 Be6 (14...Nb6 15.Nc3=) 15.Nc3 Nce7 16.Bb5 (16.f3 Kd7 17.fe4 Ne3=) 16...Kf7 17.Nc4 Bc7 18.Ba4?? (18.Ne5 Be5 19.de5 Rac8 20.Nd5 Nd5=+) 18...a6 (better 18...Nc3 19.Bc3 Bc4-+) 19.Bb3=+ Ba5?? (better 19...Rac8 20.Nd5 Bd5=+) 20.Na5+- Nc3 21.Bc3 Bb3 (21...Rac8 22.Rc1 b6 23.Be6 Ke6 24.Nb3+-) 22.Nb3 Rhc8 23.Kd2 Nd5 24.Rhc1 b6 25.Bb2 g5 26.Rc8 Rc8 27.Rc1 Rc1 28.Nc1 f4 (28...h5 29.f3+-) 29.Ne2 Ke6 30.Nc3 (30.ef4 gf4 31.f3 ef3 32.gf3 Kf5+-) 30...Nf6 (30...fe3 31.fe3 Nc3 32.Bc3+-) 31.a4 Kf5 32.h3 h5 33.Ke2 g4 Black intends f3 (33...Kg6 34.ef4 gf4 35.Ba3+-) 34.hg4 hg4 35.Ba3 (better 35.ef4!? Kf4 36.Ba3 Kf5+-) 35...f3 36.gf3 ef3 (36...gf3 37.Kd2+-) 37.Kf1 (better 37.Kd3 g3 38.fg3 Kg4+-) 37...g3 (37...Ne4 38.Ne4 Ke4+-) 38.fg3 Ng4 (38...Kg4 39.Kf2+-) 39.Nd1 (39.e4 Ke6+-) 39...Ke4 (39...b5 40.ab5 ab5 41.Bc5+-) 40.Bc1 (better 40.Nf2 Nf2 41.Kf2 Kf5+-) 40...Kd3 (40...Nf6+-) 41.Nf2 Kc2 (41...Nf2 42.Kf2 Ke4+-) 42.Ng4 Kc1 43.d5 1-0. zembelek (2100) - amayak (2070), Rated Blitz game, lichess.org, 2013.

7.Nc3 0-0 8.de5 (8.Nf3 Bg4 9.cd5 cd5 10.de5 Be5 11.Be2 Qa5 12.Ne5 Be2 13.Ke2+=; 8.cd5 cd5 9.de5 Be5 10.Nf3 Bg4 11.Be2 Qa5 12.Ne5 Be2 13.Ke2+=; 8.bc6 bc6 9.de5 Be5 10.Nf3 Bg4 11.cd5 Nd5 12.Bc4 Qa5 13.Qd2=; 8.c5 Bc7 9.Nf3 Nd7 10.Be2 cb5 11.Nb5 Ba5 12.Nc3 b6 13.cb6=; 8.Rc1 ed4 9.Qd4 Be6 10.cd5 Nd5 11.Nd5 Bd5 12.Bc4 Be5 13.Bd5=) 8...Be5 9.Nf3= Bg4 10.cd5 cd5 11.Be2 Qa5 12.Ne5 Be2 13.Ke2+=.

7.Nc3 Bb4 8.Nf3 (8.a3 Ba5= 9.de5 fe5 10.Qh5 Ng6 11.Nf3 cb5 12.0-0–0 0-0 13.Rd5+/–; 8.de5 fe5 9.a3 Ba5 10.Qh5 Ng6 11.Nf3 cb5 12.0-0–0 0-0 13.Rd5+/–) 8...e4 (8...cb5 9.cb5 Qa5 (9...Bg4 10.Qa4= Qa5 11.Qa5 Ba5 12.de5 Nd7 13.ef6+/–) 10.Qd2 e4 11.a3 Bc3 12.Bc3 Qa4 13.Ng1=) 9.Nd2 0-0 (9...Be6 10.Qb3 Ba5 11.Rc1= Qd7 12.Ba3 Bc3 13.Rc3+=) 10.Qb3+= Bc3 11.Bc3 Be6 12.Be2 (12.bc6 bc6 13.cd5+=) 12...f5 (12...dc4 13.Bc4+=) 13.0-0–0 (better is 13.c5!?+=; 13.Rb1+=) 13...cb5 (13...dc4 14.Nc4 Nd5 15.Kd2–/+) 14.cb5+= a6 15.Kb2 (15.Rdg1!?+=) 15...ab5–/+ 16.Bb5 Na6 (16...Nbc6 17.f3–/+) 17.Nb1 (17.Rc1 Nc6–/+) 17...Nc6 18.Rc1 (18.Kc1 f4–/+) 18...Qe7 (18...f4 19.Bd2–+) 19.a3 (19.Nd2 Qh4 20.g3 Qh6–/+) 19...f4–+ 20.Bd2 Nc7?? (20...f3 21.Rhg1–+) 21.Be2?? (better is 21.Bc6 fe3 22.Bb4 Rf2 23.Ka1=) 21...Na5?? 22.Qb4?? Qd7–/+ 23.Rhf1 b5–+ 24.Qc5? Nc4 25.Rc4 bc4 26.Bb4 Na6 27.Qd6 Nb4 28.Qd7 Bd7 29.ab4 Ra4 30.Kc3 Rfa8 0–1. Zornack,Andre (1990) – Gottwald,Bernhard (1925), RSS5E NoEngine–100, 2009.

7.Nc3 ed4 8.Qd4 Be6 9.Nf3 Nd7 10.cd5 Nd5 11.Qd2 Nc5 12.bc6 bc6 13.Nd4=.

7.Nc3 Be6 8.c5 Bc7 9.de5 fe5 10.Qh5 g6 11.Qh4 Nd7 12.Na4 Ba5 13.Kd1+=.

7.c5 Bc7 8.de5 fe5 9.Qh5 g6 10.Qh4 Bf5 11.Nf3 Nd7 12.Nbd2 cb5 13.g4=.

7.cd5 A) 7...cd5 8.Nc3 (8.de5 fe5 9.Nf3 Nd7 10.Nc3 Nb6 11.a4 Bg4 12.a5 Nc4 13.Bc4=; 8.Nf3 e4 9.Nfd2 0-0 10.Ba3 Ba3 11.Na3 Bf5 12.Be2 Qa5 13.Nc2=) 8...Be6 9.de5 fe5 10.Nf3 Qa5 11.Be2 0-0 12.0-0 h6 13.Qd2=; B) 7...ed4 8.Bd4 Nd5 9.Qh5 g6 10.Qh4 Bb4 11.Nd2 c5 12.Bb2 Ne3 13.Qe4–+.

7.de5 fe5 8.c5 Bc7 9.Qh5 g6 10.Qh4 Bf5 11.Nf3 Nd7 12.Nbd2 cb5 13.g4=.

5.de5 fe5

6.e4 de4 7.Be5 Nf6 8.Bd6 Qd6 9.Nc3 Qc5+=.

6.Nf3 d4 7.Nbd2 a6 8.c3 dc3 9.Bc3 ab5 10.Ne5 b4 11.Bd4 c5 12.Bb2 Be5 13.Be5 Nf6 14.Bf6 Qf6 =.

6.Nf3 d4 7.e3 de3 8.fe3 Nd7 9.Bc4 Bb4 10.Nbd2=.

6.Nf3 d4 7.e3 de3 8.fe3 Nd7 9.Bc4 e4 10.Qd5 (10.Bg7 ef3 11.Bh8 Qh4 12.g3 Qc4 13.Qf3 Qc2 14.Nc3–/+) 10...Qe7= 11.Ng5 Ngf6 12.Qf7 Qf7 13.Nf7 (13.Bf7 Ke7 14.0-0 h6 15.Ne4 Kf7–+) 13...Rf8 =.

6.Nf3 d4 7.e3 de3 8.fe3 Nd7 9.Bc4 Qe7=.

6.Nf3 d4 7.e3 de3 8.Be5 ef2 9.Kf2=.

6.Nf3 Nf6 7.e3 e4 8.Nd4 0-0 9.c4 (better is 9.Be2!?+=) 9...Ng4–+ 10.Be2?? (better is 10.Nc2 Nf2 11.Qd5 Kh8 12.Rg1 Bh2 13.Qd8 Rd8 14.Kf2 Rf8 15.Ke1 Bg1 16.Nc3–+) 10...Nf2 11.Qb3 Nh1 12.Nd2 (12.Nc3 Bh2 13.cd5 Qh4 14.Kd2 Nf2–+) 12...Qh4 13.Kd1 c5 14.N4f3 (14.bc6 Nf2 15.Kc1 Nc6–+) 14...Nf2 15.Kc2 ef3 16.Bf3 (16.gf3 Bf5 17.Kc1 d4–+) 16...Bf5 (16...Bf5 17.Kc1 Nd3 18.Kc2 Nb2 19.Kb2 Qf6 20.Ka3 Qa1 21.Bd5 Kh8 22.Bb7 Be5–+) 0–1. croach (2265) – pierred (2800), net–chess.com, 2016.

6.Nf3 Nf6 7.Be5+= Be5 8.Ne5 0-0 9.e3 Qd6 10.Qd4 Re8 11.Nd3 b6 12.Nc3 Bb7 (12...a6 13.Nf4 Be6 14.Bd3+=) 13.Be2 c5 14.Qf4 Qe7 15.0-0 Nbd7 (15...a6 16.Rfe1+=) 16.Rad1+/– c4 17.Nc1 Qb4 (17...a6 18.Qc7 Ne5 19.Qb6+/–) 18.Qd4 Rad8 19.e4 (19.Nd3!? Qe7 20.Nf4+/–) 19...Nc5+= 20.a3 Qa3 21.ed5 Ne6 (21...Nce4!? 22.N1a2 Nd5 23.Bc4 Nef6+/–) 22.Qc4 Rc8 23.Qa2 Rc3 24.Qa3 (worse is 24.de6 Qa2 25.Na2 Rc2+=) 24...Ra3 25.de6 Bd5 26.Rfe1 Re6 (26...Be6 27.Bd3 Kf8 28.Re5+/–) 27.c4+- Re2 (27...Bb7 28.Rd3 Rd3 29.Nd3+/–) 28.Ne2 (28.Re2?! Bc4 29.Re7 h5+/–; 28.cd5?! Re1 29.Re1 Nd5 30.Re8 Kf7=) 28...Bc4 29.Nd4 Nd5 (29...a6 30.Re7+-) 30.Ra1 Rd3 (30...Ba2 31.Re2 Nc3 32.Re8 Kf7 33.Re3+-) 31.Ra7 (31.Ra7 h6 32.Ne6 Bb5 33.Rg7 Kh8 34.Ra1+-) 1–0. Van Woerden,H – Timmerman,T, corr NED, 1990.

5.de5 Be5

6.Be5 fe5 7.e4 Nf6 8.ed5 Qd5 9.Nd2 (9.Qd5 Nd5=) 9...e4 10.Bc4 Qg5 11.g3 Bg4 12.f3 Qe3 13.Qe2 Qe2 14.Be2 ef3 15.Bf3 Bf3 16.Ngf3 0-0 17.0-0 a6 18.Nd4 ab5 19.Nb5 c6 ½–½. Rosner,Dirk – Anhalt, 1999.

6.Be5 fe5 7.e4 Nf6 8.ed5 Qd5 9.Qd5 Nd5 10.Bc4 Nf4 11.g3 Be6 12.Na3 Nd5 (12...Bc4!? 13.Nc4 Ng6=) 13.Nf3 +/–.

4.d4 Nd7

5.Nc3 Bb4 6.de5 Ne5 7.a3 Ba5 8.e3 Bf5 9.Be2 Qd7 10.Qd2 0-0-0 11.Qd4 Kb8 12.Qa4 Bc3 13.Bc3 Ne7 14.Nf3 Nf3 =.

5.Nc3 Nb6 6.e4 Bb4 7.de5? (better is 7.a3 Ba5 8.Nge2–/+) 7...d4–+ 8.Nf3? (8.a3 Ba5 9.ef6 A) 9...dc3?? 10.Qd8 Kd8 11.0-0-0 Ke8 12.fg7 cb2 13.Kb2 Na4 14.Kb3 Nc5 15.Kc4 Ne4 16.gh8Q (16.gh8B? Nf2 17.Be2 Be6 18.Kc5 Nh1–+; 16.gh8R?! Be6 17.Kd4 Nf2+/–) 16...Be6 17.Kd3 Nf2 18.Ke2 Nh1 19.g3+-; B) 9...Qf6–+) 8...dc3 (8...Bc3?! 9.Bc3 dc3 10.Qd8 Kd8 11.Rd1 Ke7 12.Rd3–+) 9.Qd8 Kd8 10.Bc1 Bg4 11.Bf4 Bf3 12.gf3 fe5 (12...g5 13.Bg3–+) 13.Be5–/+ Nf6 14.0-0-0 (14.Rg1 Nbd7 15.Rd1–/+) 14...Kc8 (14...Ke7 15.Bc7 Rhf8 16.Be2–+) 15.Rd3? (15.Rg1 Nfd7 16.Bh3 Rg8 17.Bg7 c6 18.Bc3 Rg1 19.Bd7 Nd7 20.Rg1 Ba3 21.Kd1 cb5=) 15...Na4 (better is 15...Re8 16.Bc3 Bc3 17.Rc3 Re7–+) 16.Rd4 Ba3 17.Kb1 Nb6 18.Bh3 (18.Bh3 Kb8 19.Rg1=) 1–0. Yannick – Marius_sah (1680), playchess.de, 2006.

5.Nd2 Qe7 6.c4 Qb4 7.Qc2 Nb6 8.cd5 ed4 9.Rb1 Nd5 10.Ngf3 Nc3 11.Bc3 Qc3 12.Rc1 Be6 13.Qb1 Qa3 14.Rc7 Bd6 =.

5.e4 de4 6.Qh5 g6 7.Qh4 Bb4 8.c3 Bd6 9.Qe4 Qe7 10.Nf3 f5 11.Qe2 Ngf6 12.c4 e4 13.Nfd2 a6 14.Nc3 Bb4 =.

5.de5 Ne5 6.e3 Bf5 7.Be2 Qd7 8.Nc3 Bb4 9.Nf3 Nf3 10.Bf3 0-0-0 11.Qd4 Qb5 12.Qa7 Bc2 13.Bg4 f5 14.Be2 Qa5 =.

5.Nf3 e4 6.Nfd2 f5 7.c4 f4 8.Qb3 Ndf6 9.g3 Ng4 10.cd5 e3 11.Ne4 ef2 12.Nf2 Nf2 13.Kf2 Nf6 14.gf4 Nd5 =.

5.Nd2 c6

6.c4 A) 6...Nh6 A1) 7.cd5 cd5 8.e3 ed4 9.Bd4 Nf5 10.Ngf3 Nd4 11.Nd4 Ne5 12.Be2 Bb4; A2) 7.e3 ed4 (7...Bd6 8.Ngf3 e4 9.Nh4 0-0 10.bc6 bc6 11.cd5 cd5 12.Qb3 Rf7; 7...Bb4 8.Ngf3 ed4 9.bc6 bc6 10.Bd4 c5 11.Bb2 Nb6 12.cd5 0-0) 8.bc6 bc6 9.Bd4 Nf5 10.Ngf3 Kf7 11.cd5 cd5 12.Bb5 Nc5; A3) 7.Rc1 Nf5 (7...ed4 8.cd5 c5 9.Qb3 Nb6 10.Ne4 c4 11.Rc4 Nc4 12.Qc4 Qa5) 8.Ngf3 e4 9.g4 Nh6 10.Nh4 e3 11.fe3 f5 12.g5 Qg5; A4) 7.Nh3 Bd6 (7...Bb4 8.a3 Bd6 9.g3 0-0 10.Bg2 ed4 11.cd5 c5 12.Nf4 Bf4; 7...Nf5 8.cd5 cd5 9.de5 Ne5 10.Qb3 d4 11.Nf4 Qa5 12.Rd1 Bd7; 7...c5 8.e3 cd4 9.ed4 Nf5 10.Bd3 e4 11.Be2 Bb4 12.0-0 0-0; 7...dc4 8.bc6 bc6 9.Qc2 ed4 10.Bd4 Nb6 11.Bc3 Bc5 12.Nc4 Bf5; 7...Qa5 8.e3 ed4 9.Bd4 Nf5 10.cd5 cd5 11.Nf4 Nd4 12.ed4 Nb6) 8.g3 dc4 9.bc6 bc6 10.Bg2 0-0 11.Nc4 Bb4 12.Kf1 Nb6; A5) 7.bc6 bc6 8.Rb1 Rb8 9.Bc3 Rb1 10.Qb1 c5 11.e3 ed4 12.ed4 Nb6; A6) 7.Qc2 Bb4 (7...c5 8.de5 Ne5 9.cd5 Qd5 10.e4 Qf7 11.Ngf3 Nf3 12.Nf3 Be6; 7...ed4 8.cd5 c5 9.e4 de3 10.fe3 Nb6 11.Ngf3 Qd5 12.e4 Qe6; 7...Qe7 8.Rc1 Kf7 9.cd5 cd5 10.Qb3 Qd6 11.e4 ed4 12.Bd4 Be7; 7...Be7 8.cd5 cd5 9.Rc1 ed4 10.Ngf3 0-0 11.Nd4 Ne5 12.g3 Bb4) 8.Ngf3 e4 9.cd5 cd5 10.Qb3 Ba5 11.Nh4 Nb6 12.g3 Bd2; B) 6...Bd6 B1) 7.Rc1 Ne7 8.cd5 cd5 9.Qb3 Qa5 10.e3 0-0 11.Ngf3 e4 12.Nh4 Bb4; B2) 7.Qb3 Ne7 (7...ed4 8.Bd4 Ne7 9.cd5 cd5 10.Rc1 0-0 11.g3 Ne5 12.f4 Ng4) 8.cd5 cd5 9.Rc1 a5 10.e4 a4 11.Qc2 0-0 12.Ngf3 ed4; B3) 7.cd5 cd5 8.Rc1 Ne7 9.Qb3 a5 10.e4 0-0 11.Ngf3 a4 12.Qc2 ed4; B4) 7.e4 Ne7 (7...de4 8.c5 Bc7 9.Ne4 ed4 10.Be2 Ne7 11.Bd4 Ne5 12.Be5 Be5) 8.Ngf3 de4 9.Ne4 Bb4 10.Bc3 Bc3 11.Nc3 0-0 12.Qc2 ed4; B5) 7.c5 Bc7 8.e4 Ne7 9.Ngf3 ed4 10.Qc2 0-0 11.bc6 bc6 12.Nd4 Ne5; B6) 7.g3 Ne7 8.cd5 cd5 9.Rc1 a6 10.e4 ed4 11.Bd4 0-0 12.ba6 ba6; B7) 7.Ngf3 Ne7 8.Rc1 e4 9.Nh4 g5 10.e3 gh4 11.Qh5 Kf8 12.f3 ef3.

6.bc6 bc6 A) 7.c4 Bd6 (7...Ne7 8.cd5 Rb8 9.Qc2 cd5 10.de5 Ne5 11.Ngf3 N7g6 12.Rb1 Bd6; 7...Rb8 8.Rb1 Ne7 9.cd5 cd5 10.e3 Qa5 11.de5 fe5 12.Ngf3 Ng6; 7...Kf7 8.Ngf3 Rb8 9.Rb1 e4 10.Nh4 Qa5 11.Qc2 Qa2 12.cd5 cd5) 8.Ngf3 Ne7 9.e4 0-0 10.Be2 Rb8 11.Rb1 ed4 12.cd5 d3; B) 7.e4 Rb8 (7...Qa5 8.Ne2 Rb8 9.Bc3 Bb4 10.Bb4 Rb4 11.c3 Rb8 12.Nb3 Qc7; 7...Bd6 8.Ngf3 Ne7 9.Bd3 0-0 10.0-0 Rb8 11.Rb1 ed4 12.Bd4 Rb1) 8.Rb1 Qa5 9.Bd3 c5 10.de5 c4 11.e6 Nc5 12.Be2 de4; C) 7.e3 Bd6 (7...Rb8 8.Rb1 Bd6 9.de5 fe5 10.Ngf3 Ngf6 11.Be2 0-0 12.0-0 Qc7; 7...Kf7 8.Ngf3 e4 9.Nh4 Nh6 10.c4 g5 11.cd5 cd5 12.f3 Rb8; 7...Nh6 8.c4 Rb8 9.Qc2 Bd6 10.Be2 0-0 11.Nh3 ed4 12.Bd4 c5; 7...Qa5 8.de5 Rb8 9.Rb1 fe5 10.Ngf3 Bd6 11.Be2 Ngf6 12.0-0 Ba6; 7...Bb4 8.Rb1 Rb8 9.de5 fe5 10.Ngf3 Ngf6 11.Be2 0-0 12.0-0 Qe7) 8.Ngf3 e4 9.Nh4 Ne7 10.g3 0-0 11.Be2 Rb8 12.Rb1 Qa5; D) 7.de5 Rb8 (7...Ne5 8.Ngf3 Bd6 9.e3 Ne7 10.Ne5 fe5 11.Rb1 0-0 12.Be2 Qc7) 8.Rb1 Ne5 9.Ngf3 Bd6 10.e4 Nf3 11.Qf3 Ne7 12.Bd3 Qa5; E) 7.g3 Bd6 (7...Rb8 8.Rb1 Ne7 9.Bh3 Ng6 10.c4 Kf7 11.Bc3 ed4 12.Bd4 Bb4; 7...Nh6 8.Bh3 e4 9.e3 Nb6 10.Bc8 Qc8 11.Ne2 Rb8 12.Rb1 Bd6; 7...Ne7 8.Rb1 Kf7 9.de5 Ne5 10.Bg2 Rb8 11.Ngf3 Nf3 12.Bf3 Bh3; 7...Kf7 8.Ngf3 e4 9.Nh4 Nb6 10.a4 a5 11.e3 Nh6 12.Be2 Bh3; 7...Qa5 8.c3 Bd6 9.Ngf3 e4 10.Nh4 Ne7 11.Nb3 Qc7 12.Bh3 Nb6) 8.Ngf3 e4 9.Nh4 Nb6 10.a4 Rb8 11.Bc3 Be6 12.a5 Nd7; F) 7.Rb1 Bd6 8.e4 Ne7 9.Ngf3 0-0 10.Bd3 ed4 11.Bd4 Ne5 12.0-0 Nd3.

6.e3 A) 6...Kf7 A1) 7.c4 Bd6 (7...Ne7 8.cd5 cd5 9.Qb3 a5 10.a4 ed4 11.Bd4 Qc7 12.Ne2 Qd6) 8.cd5 cd5 9.Qb3 Ne7 10.Rc1 ed4 11.Bd4 Qa5 12.Ngf3 Ne5; A2) 7.de5 Ne5 8.Ngf3 Bd6 9.Ne5 fe5 10.Nf3 Qf6 11.h4 Ne7 12.Be2 cb5; A3) 7.Be2 Nh6 (7...cb5 8.de5 Ne5 9.Ngf3 Nf3 10.Bf3 Ne7 11.Nb3 Bd7 12.0-0 Qc7; 7...Ne7 8.de5 Ne5 9.Ngf3 N7g6 10.0-0 Bc5 11.h4 Qd6 12.h5 Nf3; 7...Bd6 8.Ngf3 Ne7 9.c4 ed4 10.ed4 cb5 11.c5 Bf4 12.g3 Bh6) 8.bc6 bc6 9.Rb1 Bd6 10.de5 Ne5 11.Ngf3 Nf3 12.Bf3 Rb8; A4) 7.bc6 bc6 8.Rb1 Bd6 9.Ngf3 e4 10.Nh4 Ne7 11.g3 g5 12.Ng2 Rb8; A5) 7.Rb1 Bd6 (7...Nh6 8.c4 ed4 9.Bd4 Nf5 10.bc6 bc6 11.Ngf3 Nd4 12.Nd4 Ne5) 8.bc6 bc6 9.de5 Ne5 10.Ngf3 Rb8 11.Be2 Nf3 12.Bf3 Ne7; A6) 7.Ngf3 Bd6 (7...e4 8.Nh4 Nh6 9.g3 Nb6 10.bc6 bc6 11.a4 g5 12.Ng2 Rb8) 8.c4 Ne7 9.de5 Ne5 10.Ne5 fe5 11.cd5 cd5 12.Bd3 e4; B) 6...Bd6 B1) 7.Ngf3 e4 (7...Ne7 8.bc6 bc6 9.de5 Ne5 10.Ne5 fe5 11.Be2 0-0 12.0-0 Rb8) 8.bc6 bc6 9.Nh4 Ne7 10.c4 0-0 11.c5 Bc7 12.g3 Rb8; B2) 7.bc6 bc6 8.de5 Ne5 9.Ngf3 Ne7 10.Be2 Rb8 11.Bc3 0-0 12.0-0 Qc7; B3) 7.de5 Ne5 8.Ngf3 Ne7 9.Ne5 fe5 10.Qf3 e4 11.Qh5 g6 12.Qh4 0-0; B4) 7.c4 Ne7 (7...ed4 8.Bd4 Ne7 9.cd5 cd5 10.Ngf3 0-0 11.Be2 Ne5 12.0-0 Nf5) 8.cd5 cd5 9.Qb3 ed4 10.Bd4 b6 11.Ngf3 Nc5 12.Qb2 0-0.

6.e4!?= A) 6...Bb4 A1) 7.Bd3 Ne7 (7...ed4 8.bc6 bc6 9.Ngf3 Bc3 10.Bc3 dc3 11.Nb1 Ne7 12.Nc3 0-0) 8.c3 Ba5 9.Ngf3 ed4 10.cd4 de4 11.Be4 f5 12.Bd3 Nc5; A2) 7.bc6 bc6 8.Ngf3 Ne7 9.c3 Bd6 10.Bd3 0-0 11.0-0 Rb8 12.Rb1 Qc7; A3) 7.Be2 Qa5 8.bc6 bc6 9.de5 fe5 10.Ngf3 Ngf6 11.0-0 0-0 12.a3 Bd2; A4) 7.a3 Ba5 (7...Bd6 8.Ngf3 Ne7 9.Bd3 0-0 10.0-0 ed4 11.bc6 bc6 12.Bd4 c5) 8.Qh5 g6 9.Qh4 Ne7 10.de5 g5 11.Qh6 fe5 12.0-0-0 g4; A5) 7.c3 Bd6 (7...Ba5 8.Ngf3 Ne7 9.Be2 ed4 10.Nd4 Nc5 11.0-0 0-0 12.bc6 bc6) 8.Ngf3 Ne7 9.Bd3 0-0 10.0-0 a6 11.bc6 bc6 12.Rb1 Rb8; B) 6...Bd6 B1) 7.Ngf3 Ne7 8.Be2 0-0 9.0-0 ed4 10.bc6 Ne5 11.cb7 Bb7 12.Nd4 de4; B2) 7.Bd3 Ne7 (7...c5 8.ed5 cd4 9.Qh5 Kf8 10.Ne2 Bb4 11.c3 Nc5 12.Bc2 dc3) 8.Qh5 g6 9.Qh6 c5 10.de5 Be5 11.Be5 Ne5 12.Qg7 Rf8; B3) 7.c4 Ne7 (7...de4 8.c5 Bc7 9.Ne4 ed4 10.Be2 Ne7 11.Bd4 Ne5 12.Be5 Be5) 8.Ngf3 0-0 9.Be2 ed4 10.Nd4 Nc5 11.ed5 cd5 12.0-0 Qc7; B4) 7.de5 Be5 (7...Ne5 8.bc6 bc6 9.Ngf3 Ne7 10.Ne5 fe5 11.Qf3 Rb8 12.0-0-0 Qb6) 8.Be5 fe5 9.Ngf3 Ngf6 10.Bd3 0-0 11.0-0 Re8 12.bc6 bc6; B5) 7.Be2 Qa5 (7...Ne7 8.Ngf3 0-0 9.0-0 ed4 10.ed5 Nd5 11.Nc4 Ne5 12.Qd4 Nc4; 7...ed4 8.Ngf3 Ne7 9.Nd4 Nc5 10.bc6 bc6 11.ed5 cd5 12.0-0 0-0) 8.c3 ed4 9.Nb3 Qb6 10.Nf3 Ne7 11.Nfd4 0-0 12.0-0 Ne5; B6) 7.Rb1 Ne7 (7...Qa5 8.bc6 bc6 9.Bd3 Ne7 10.Ne2 c5 11.Bc3 Qc7 12.de5 Ne5; 7...Rb8 8.Ngf3 Ne7 9.de5 Ne5 10.Ne5 fe5 11.Qf3 Rf8 12.Qg3 Ng6) 8.bc6 bc6 9.Ngf3 Qa5 10.Bd3 de4 11.Be4 Ba6 12.Bd3 e4; B7) 7.bc6 bc6 8.Ngf3 Ne7 9.Bd3 0-0 10.0-0 ed4 11.Bd4 Nc5 12.Rb1 Nd3.

6.de5 Ne5 A) 7.e4 Bc5 (7...Bd6 8.bc6 bc6 9.Ngf3 Nf3 10.Qf3 Rb8 11.Bc3 Ne7 12.Be2 0-0; 7...Bb4 8.Rb1 Qe7 9.c3 Bc5 10.Ngf3 de4 11.Ne5 Qe5 12.Nc4 Qf5; 7...Nh6 8.bc6 bc6 9.Ngf3 Nf3 10.Qf3 Rb8 11.Rb1 Bc5 12.Bd3 Ng4) 8.Ngf3 Qb6 9.Qe2 Nf3 10.Qf3 Ne7 11.ed5 Nd5 12.Nc4 Qd8; B) 7.Ngf3 Bd6 (7...Nf3 8.Nf3 Bd6 9.e3 Ne7 10.Bd3 0-0 11.0-0 cb5 12.Bb5 Qb6) 8.bc6 bc6 9.e4 Nf3 10.Qf3 Rb8 11.Bc3 Ne7 12.Be2 0-0; C) 7.Rb1 Bd6 8.bc6 bc6 9.Ngf3 Ne7 10.e3 0-0 11.Ne5 fe5 12.Be2 e4; D) 7.bc6 bc6 (7...Bd6 8.cb7 Bb7 9.Rb1 Rb8 10.e3 Ne7 11.f4 N5c6 12.Bd3 0-0; 7...Nc6 8.e3 Nh6 9.Ngf3 Kf7 10.Bd3 Nb4 11.0-0 Bd6 12.e4 Bc7) 8.Ngf3 Bd6 9.e4 Nf3 10.Qf3 Rb8 11.Bc3 Ne7 12.Be2 0-0.

6.Ngf3 cb5 7.de5 (7.e4 de4 8.Ne4 f5 9.Ng3 f4 10.Ne4 Ngf6 11.Nf6 gf6 12.de5 Qa5) 7...Qc7 (7...fe5 8.e3 Qa5 9.Qe2 Ngf6 10.Qb5 Qb5 11.Bb5 e4 12.Ng5 a6; 7...Qa5 8.e3 fe5 9.Ne5 Ngf6 10.Be2 Ba3 11.Ba3 Qa3 12.Bb5 0-0; 7...Qb6 8.e3 fe5 9.Ne5 Ngf6 10.Bd3 Bd6 11.Ng4 0-0 12.0-0 Qc7; 7...Ne5 8.Ne5 fe5 9.e3 Nf6 10.Bb5 Bd7 11.Bd7 Nd7 12.0-0 Qb6) 8.e3+= (8.e4 de4 9.Ne4 fe5 10.Bb5 Qa5 11.Nc3 Bb4 12.Qd3 a6) 8...a6 9.e6 Nc5 10.Nd4 Ne6 11.Bd3 Nd4 12.Bd4 Nh6.

6.Ngf3 Bd6 7.e4 (7.bc6 bc6 8.e4 Ne7 9.Bd3 0-0 10.0-0 ed4 11.Bd4 Nc5 12.Rb1 Nd3; 7.c4 Ne7 8.Qb3 ed4 9.Bd4 Nc5 10.Qc3 cb5 11.cb5 Ne6 12.e3 Nf5) 7...Ne7 8.Bd3 0-0 9.0-0 ed4 10.bc6 bc6 11.Bd4 Ne5 12.Rb1 Nd3.

6.Ngf3 e4–/+ 7.Nh4 (7.bc6 bc6 (7...Nb6 8.cb7 Bb7 9.Nh4 Nh6 10.g3 Qd7 11.e3 Kf7 12.Rb1 g5) 8.Nh4 Nh6 9.g3 Rb8 10.Bc3 Bd6 11.Nb3 Nb6 12.Nc5 0-0) 7...cb5 (7...Nh6 8.g3+= (8.e3 Kf7 9.c4 g5 10.Qb3 gh4 11.cd5 cb5 12.d6 Kg7) 8...g5 9.bc6 bc6 10.Ng2 Nb6 11.a4 Rb8 12.Bc3 Kf7; 7...Kf7 8.c4 Ne7 9.g3 Nb6 10.c5 Nc4 11.Nc4 dc4 12.bc6 bc6; 7...Nb6 8.e3 Nh6 9.a4 f5 10.g3 Kf7 11.a5 Nd7 12.c4 Nf6; 7...Ne7 8.e3 Kf7 9.f4 cb5 10.Kf2 f5 11.Bb5 Nf6 12.Be2 Ng4; 7...g5 8.bc6 bc6 9.Nf5 Nb6 10.Ng3 Na4 11.Rb1 Rb8 12.Ba1 Rb1) 8.e3 a6?? (better is 8...Ne7 9.Ba3 (9.Bb5 Qb6 10.c4 a6 11.Bd7 Bd7 12.Ba3 Qe6) 9...g6+= 10.c3 a6 11.Be2 Nb6 12.0-0 Nc6) 9.Qh5+- Ke7?? (better is 9...g6 10.Ng6! hg6 11.Qh8 Ne7+-) 10.Ba3 Ke6 (10...Nc5 11.Bc5 Ke6 12.Bf8 Qf8+-) 11.Qf5 (11.Qf5 Kf7 12.Qd5 Ke8 13.Qh5 g6 14.Ng6 Ba3 15.Nh8 Ke7 16.Qh7 Ke6 17.Qe4 Ne5 18.de5+-) 1–0. pierre – rujann, internet, 2010.

6.Nh3 Bd6 A) 7.c4 Ne7 8.cd5 cd5 9.Qb3 Qb6 10.a4 ed4 11.a5 Qc7 12.Bd4 Nc5; B) 7.e4 Ne7 8.Qh5 g6 9.Qh6 Kf7 10.f4 Qf8 11.Qh4 ed4 12.Bd4 Bc5; C) 7.e3 Ne7 8.bc6 bc6 9.Be2 0-0 10.0-0 Rb8 11.Rb1 Qc7 12.g3 Qa5; D) 7.Rc1 Ne7 (7...cb5 8.e4 Qa5 9.ed5 Ne7 10.c3 Qa2 11.Ne4 0-0 12.Nd6 Qb2; 7...Nh6 8.c4 0-0 9.g3 Nf5 10.Bg2 ed4 11.cd5 c5 12.0-0 a6; 7...Qb6 8.c4 ed4 9.cd5 cd5 10.g3 Ne7 11.Nf4 g5 12.Nh5 Kf7; 7...c5 8.de5 Be5 9.Be5 Ne5 10.Nf4 Ne7 11.c4 Bf5 12.Nb3 Nc4; 7...ed4 8.Bd4 Ne7 9.c4 c5 10.Bb2 Be5 11.Be5 Ne5 12.Nf4 Bf5) 8.c4 0-0 9.cd5 cd5 10.Qb3 a5 11.a4 b6 12.g3 ed4; E) 7.bc6 bc6 8.e4 Ne7 9.Bd3 0-0 10.0-0 Qc7 11.Qh5 g6 12.Qh6 c5.

5.e3 Ne7

6.c4 c6 7.de5 Ne5 8.cd5 Qd5 9.Nc3 Qd1 10.Rd1 a6 11.bc6 bc6 12.Ba3 Rb8 13.Be2 Be6 14.Bd6 Rb2 =.

6.de5 Ne5 7.Nd2 Bg4 8.Be2 Be2 9.Ne2 Qd7 10.Nf4 0-0-0 11.a4 Nf5 12.g4 (12.0-0 Bb4=+) 12...Nh4=+ 13.Be5 (13.b6 ab6 14.g5 fg5 15.Nd3–+) 13...fe5 –/+.

4.d4 e4

5.a3 Nh6 6.e3 Bd6 (6...Bg4!? 7.Be2 f5=) 7.c4= c6 (7...Bg4 8.Qc2 c6 9.Qb3 dc4 10.Bc4=) 8.Nd2 (8.bc6 bc6 (worse 8...Nc6 9.Qh5 Ke7 10.Qd5+-) 9.cd5 cd5 10.Bb5 Kf7=) 8...0-0 (8...Be6 9.bc6 bc6 10.c5=) 9.c5 (better 9.cd5!? cd5 10.Qb3+-) 9...Bc7= 10.f3 (10.Be2 f5=) 10...f5 11.Ne2 (11.Qb3 Re8 12.bc6 Nc6=+) 11...Qh4 (better 11...ef3!? 12.Nf3 Ng4–/+) 12.g3= Qe7 13.Nf4 (13.f4 Ng4 14.Qb3 Ba5=) 13...Bf4–/+ 14.ef4?? (14.gf4 ef3 15.Qf3 Ng4=+) 14...Nd7 (better 14...ef3 15.Be2 fe2 16.Qe2 Re8 17.Qe7 Re7 18.Kd1 cb5–+) 15.Be2 Nf6 16.0-0 Bd7 17.Rb1 (17.bc6!? Bc6 18.Rb1=) 17...cb5–/+ 18.Ba1 a6 19.a4 (19.Re1 b6 20.cb6 Rfb8–/+) 19...Bc6 (better 19...e3!? 20.Nb3 ba4–+) 20.ab5=+ ab5 Black is in command 21.Bb5 (better 21.fe4!? fe4 22.Re1–/+) 21...e3–+ 22.Bc6? (better 22.Qe2 Ra2 23.Bc6 Rd2 24.Rb7–+) 22...bc6 (better 22...e2 23.Qe1 ef1R (23...bc6?! 24.Rf2–/+) 24.Nf1 Qe1 25.Bd5 Nd5 26.Re1 Rfe8–+) 23.Re1= Ra2 24.Nf1?? (better 24.Re2=) 24...e2–+ 25.Qb3 ef1Q 26.Kf1 Qa7 27.Bb2 (27.Kg1 Ra8–+) 27...Rb8 28.Qe3 (28.Qc2–+) 28...Rab2 29.Qe6 Qf7 (better 29...Kh8!? 30.Ra1 Qb7 31.Kg1–+) 30.Rb2 Rb2 31.Qc6 (31.Qc8 Qf8 32.Qc6 Rh2 33.Re2 Rh1 34.Kg2–+) 31...Ne4 (better 31...Qh5 32.Qc8 Kf7 33.Qe6 Kg6–+) 32.fe4? (32.Qa8 Qf8 33.Qd5 Kh8 34.fe4 Rh2=) 32...fe4?? (better 32...de4 33.Qc8 Qf8 34.Qf8 Kf8–+) 33.Qd6?? (33.Qa8 Qf8 34.Qd5 Kh8 35.Qe4 Ng4=) 33...Nf5 (better 33...Kh8 34.Re2 Re2 35.Ke2 Qh5 36.Ke1 Qh2 37.Qd5 Qg3 38.Ke2 Qd3 39.Ke1 e3 40.Qa8 Ng8–+) 34.c6?? (better 34.Qd8 Qf8 35.Qd5 Qf7 36.Qa8 Qf8 37.Qe4=) 34…Nd6–+ (34...Nd6 35.Rc1 Qh5 36.g4 Qh3 37.Ke1 Qe3 38.Kd1 Qe2) 0–1. aravind555 – AmRFreeStylee (1780), lichess.org, 2018.

5.a4 Be6 6.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.a4).

5.c4 c5 6.e3 Be6 (6...cd4 7.Qd4 Be6 8.Nc3+=) 7.cd5+/- Bd5 8.Nc3 cd4 (8...Be6 9.Ne4 cd4 10.Qd4 Qd4 11.Bd4 Bb4 12.Nd2+/-) 9.Qd4+- (9.Nd5?! Qd5 10.Qd4 Qd4 11.Bd4 Bb4 12.Kd1 Kd7+=) 9...Ne7 10.0-0-0 (better 10.Ba3 Bf7 11.Qd8 Kd8 12.Ne4+-) 10...a6?? (better 10...Qc7+=) 11.Nd5+- Nd5 (11...Qd5 12.Qd5 Nd5 13.Rd5+-) 12.Qe4 (worse 12.Qd5 Qd5 13.Rd5 Nd7+-) 12...Qe7 13.Qd5 Qc5 14.Kb1 Qd5 15.Rd5 ab5 (15...Nd7 16.Bd4+-) 16.Bb5 Kf7 17.Rd8 Ke7 (17...g6 18.Rc8 Ke7 19.Nf3+-) 18.Rc8 Ra5 19.a4 Nd7 20.Ba3 Kf7 (20...Ke6 21.Re8 Kf7 22.Bd7+-) 21.Bd7 Ba3 (21...g6 22.Bb5 Kg7 23.Bb2+-) 22.Rh8 Rc5 (22...h6 23.Nf3+-) 23.Nf3 Rc7 24.Be8 Ke7 25.Nd4 g6 26.Rh7 Kd8 27.Ne6 (27.Ne6 Ke8 28.Nc7 Kf8 29.Ne6 Ke8 30.Rd1 Be7 31.Nc7 Kf8 32.Rd7 b5 33.Rhe7 ba4 34.Re8) 1-0. DEFFM – GuestFCGN, freechess.org, 2021.

5.c4 f5 6.c5 Nf6 7.e3 c6 8.a4 Be7 9.Nc3 0-0 10.h3 Qe8 11.Nge2 Nh5 12.Ng3 Ng3=+ 13.fg3 Qg6 14.Kf2 Nd7 15.Ne2 Nf6 16.Nf4 Qg5 17.h4 Qg4?? 18.Be2+- (18.Be2 g5 19.Nh3+-) 1–0. iczker – prastas, internet, 2011.

5.Nd2 Be6 6.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.Nd2).

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

5.e3 Nd7 6.c4 c6 7.Qb3 Ne7= 8.a4 Rb8 (8...a6 9.Nc3 ab5 10.ab5 Ra1 11.Ba1=) 9.Nc3 Nb6 10.a5 (10.cd5 cd5 11.a5 Na8+=) 10...Nc4= 11.Bc4 dc4 12.Qc4 f5 (12...Bf5=) 13.Ba3 (13.Nge2 Bd7=) 13...cb5 (13...Qa5!? 14.Nge2 Ng6=+) 14.Nb5 Nc6 15.Ne2 (better 15.Bf8 Rf8 16.a6=) 15...Qa5-/+ 16.Nec3? (better 16.Nbc3-/+) 16...Ba3?? (better 16...a6 17.0-0 ab5 18.Nb5 Ba3-+) 17.Ra3= Qd8 (17...Qb4 18.Qb4 Nb4 19.Ra7=) 18.0-0 White prepares the advance d5 (18.Qc5 Kf7 19.d5=) 18...Qe7 (better 18...a6 19.Ra6 ba6 20.Qc6 Kf8 21.Qc5 Qe7+=) 19.Nd5+/- Qf7?? (19...Qd8 20.Qc5 Kf7 21.Nd6 Ke6 22.Nf4 Kf6 23.f3 ef3 24.Rf3+-) 20.Ndc7 (better 20.Nd6 Kf8 21.Nf7 Kf7 22.Nb4 Be6 23.d5 Nb4 24.de6 Kf6 25.Qb4 Ke6 26.Ra7+-) 20...Kf8+/- 21.d5 Ne5 (21...a6 22.Na6 ba6 23.Qc6+/-) 22.Qc5 Kg8 23.Qa7 Nc4?? (better 23...Nd7+-) 24.Qb8 (24.Qb8 Na3 25.Qc8 Qf8 26.Qe6 Qf7 27.Na3+-) 1-0. zembelek1 (2160) - vardan_sargsyan (2180), Rated Blitz game, lichess.org, 2016.

5.e3 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4).

5.e3 Nh6 6.c4 c6 (6...Be6 7.Nc3=) 7.Nc3 Bb4 (7...Be6 8.Qb3=) 8.Qb3 (8.bc6 bc6 9.cd5 Qd5+=) 8...Bc3 (8...Ba5 9.bc6 bc6 10.cd5 cd5 11.Bb5 Kf7 12.Rc1=) 9.Bc3+= 0-0 10.Ne2 (10.bc6 bc6 11.Rb1 a5+=) 10...Be6 (10...dc4 11.Qc4 Nf7 12.Rd1+=) 11.Nf4 Bf7 (11...Qd7 12.bc6 bc6 13.Rb1+/–) 12.bc6+/– bc6 13.cd5 cd5 14.Qb7 (14.Bb4 Re8+/–) 14...Nd7 (14...Qc8 15.Qc8 Rc8 16.Rc1+=) 15.Nd5 Rb8 16.Qc6 Rc8? (better is 16...Re8 17.Bb5 Nf8+/–) 17.Qd6?? (better is 17.Qc8! Bd5 18.Qd8 Rd8 19.a3+-) 17...Nf5+= 18.Qf4 Bd5 (better is 18...g6!? 19.Qe4 Nb8 20.Nf6 Qf6–/+) 19.Qf5+= Nb6 20.Bb4 Re8 (20...Rf7 21.Ba6 Rc2 22.0-0+=) 21.Bb5+/– Re6 22.0-0 g6 (22...Nc4 23.Bc5+/–) 23.Qf4 Nc4 24.Bc5 a6 25.Ba4 Nb2 26.Bc2 Bc4 (26...Qc7 27.Qg4+/–) 27.Rfc1 Nd3 28.Bd3 Bd3 29.h4 (29.Rc3 ec6+/–) 29...Rec6+= 30.h5 Kg7 (30...gh5 31.Qf5) 31.h6 (31.hg6 hg6 32.Qh4 Qh8 33.Qh8 Kh8+=) 31...Kf7 32.Rc3 Qd7 (32...Qd5 33.a3+/–) 33.Rac1 g5 (33...Kg8 34.Qg3+/–) 34.Qg3 Kg6 35.f3 (35.Qh2!?+/–) 35...Kh6+= 36.Kf2 (36.Bf8 Kg6 37.Rc6 Rc6=) 36...Kg6 37.f4 h5 38.Rh1 (38.Ke1=) 38...h4 (better is 38...Qe6!? 39.Rb3 Bc4=) 39.Rh4+/– Rc5? (better is 39...Qf5+/–) 40.Rc5 (40.dc5 Qb5 41.Kg1 Rc5 42.Rb3+/–) 40...Qa4?? (40...Rc5 41.dc5 Qf5+-) 41.Rc8 Qd1 (41...Qa2 42.Kg1 Qb1 43.Kh2 Qb6+-) 42.f5! Kg7 43.Qc7 1–0. Fredek (2090) – coma (2300), Freundschaftspartie, 5m + 0s, 2005.

5.f3 f5 6.fe4 de4 7.e3 Bd6 8.c4 Qh4 9.Ke2 f4 10.Qe1 Bg4 11.Kd2 Qe1 12.Ke1 fe3 13.h3?? (better is 13.c5 Bf4 14.Ne2+=) 13…Bg3 0–1. Jokmin,Alex – Slavin,Pablo, SF–2010-0-00060, 2010.

5.c4 Bb4

6.Bc3 Qd6 7.Qb3 Bc3 8.Nc3 c6? 9.a4 Be6 10.c5 Qc7? 11.e3 Ne7 12.Nge2 0-0 13.Nf4 Bf7 14.h3 Nd7 15.Be2 h6 16.0-0 f5 17.Bh5 g6 18.Be2 Kg7 19.g3 Nf6 20.Ng2 g5 21.a5 Ng6 22.b6 ab6 23.ab6 Qd7 24.Ra4 Ra4 25.Na4 Ra8 26.Nc3 Qc8 27.Qb2 Qb8 28.Ra1 Be6 29.Ra8 Qa8 30.Qa2 Qa2=+ 31.Na2 f4 32.Nb4? Bh3 33.Nc6? bc6–+ 34.gf4 Bg2 35.Kg2? gf4–+ 36.Ba6 f3 37.Kg1 Nd7 38.Bc8 Nb8 39.Bf5 Ne7 40.Be6 Kf6 41.Bh3 h5 42.b7 Nf5 43.Kh2 Kg5 44.Bf1 Ng7 45.Bh3 Kf6 46.Bc8 Ne6 47.Kg3 Nd8 48.Kh4 Kg6 49.Kg3 Kg5 50.Kh3 h4 51.Kh2 Na6 52.b8Q?? Nb8 53.Bh3 Na6 54.Bf1 Nb4 55.Bh3 Nc2 56.Bf1 Ne3! 57.Bh3 Nd1 58.Bf1 Nf2 59.Bh3 Nh3 60.Kh3 Kf4 (60...Kf4 61.Kh2 e3 62.Kh3 e2 63.Kh4 e1Q 64.Kh5 Qe8 65.Kh6 Kf5 66.Kh7 Qg6 67.Kh8 Nf7; 60...e3 61.Kh2 e2 62.Kh3 e1Q 63.Kh2 Qe2 64.Kh3 Qg2) 0–1. iczker – aid456 (1665), internet, 2011.

6.Bc3 Qe7 7.Qb3 a5 8.a4 dc4= 9.Bb4 Qb4–/+ 10.Qb4 ab4 11.e3 Be6 12.Nd2–/+ c3 13.Ne4 Nd7 14.Ne2 Bb3 15.N2c3 bc3 16.Nc3 Ne7 17.Ra3 Bf7 18.Bd3 0-0 19.0-0 Nb6 20.Ne4? Ra4–/+ 21.Rfa1 Rfa8 22.Ra4 Ra4 23.Rc1 Bg6 24.Nc5 Ra3 25.Bg6 Ng6 26.Nb7 h5 27.g3 Nd5 28.Nd8 Rb3 29.Ne6 Rb5 30.Nc7 Nc7 31.Rc7 Kh7 32.h3 h4 33.Kg2 hg3 34.Kg3 Rb2 35.f3 Re2 36.e4 Kh6 37.d5 Rd2 38.f4 Rd3 39.Kg2? Nh4 40.Kf2 Rf3 41.Ke2 Rf4 42.d6 Re4 43.Kd3 Re8 44.d7 Rd8 45.Ke4 Ng6 46.Kf5 Nf8 47.h4?? Rd7 48.Rc8 Rd5 49.Kg4 Ng6 50.Rc5 (50.Rc5 Rc5 51.Kg3–+). iczker – akmena, internet, 2011.

5.c4 dc4

6.Qa4 Ne7 7.e3 Nd5 8.Bc4 Nb6 9.Qc2 Nc4 10.Qc4 a6 11.d5 Bf5 12.Ne2 Qd7 13.Nbc3 ab5 14.Qb5 c6 (14...c6 15.dc6 bc6= (15...Qc6?? 16.Qf5 Bb4 17.0-0+-; 15...Nc6?! 16.Rd1 Qc8 17.Nd4=)).

6.Nc3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 Qd4 10.e3 Qc5 11.Qa8 Kd8 12.Qb8 Qb4 13.Ba1 Qa5 14.Bb2 Bb4?? 15.Kd2 Ne7?? 16.Bc4+- Nf5 17.Nge2 Nd6 18.Be6 Ke7 19.Nd4?? Rd8?? 20.Nf5?? Nf5–+ 21.Kc2 Be6 22.Qd8 Kd8 23.Rd1 Ke7 (23...Ke7 24.Ra1 Qb6–+) 0–1. iczker – 01pet (1750), internet, 2011.

6.Nc3 Bb4 7.e3 c5 8.Bc4+= cd4 9.Qd4 Qd4 10.ed4 Ne7 11.Nge2 Nd7 12.0-0 Bc3 13.Nc3 Nb6 14.Bb3 Bf5 15.Ba3 Kd7 16.Be7 Ke7 17.Nd5?? Nd5= 18.Bd5 Rab8 19.Rfc1?? Kd6 20.Bb3 a6 21.a4 Rhc8 22.Rc4 Rc4 23.Bc4 Be6 24.Be6 Ke6 25.Re1 Kd5 26.Rd1 ab5 27.ab5 Rc8 28.f3 ef3 29.gf3 Rc4 30.Re1 Rd4 31.Re7 Rb4 32.Rb7 Kc5 33.Rg7+/– Rb5 34.Rh7 Rb2 35.Rh5 Kd6 36.Rh3 Ke5 37.Rg3 f5 38.Rg2 Rb1 39.Kf2 Kf4 40.Rg8 Rb2 41.Kg1 Rb1 42.Kg2 Rb2 43.Kh3 Kf3 44.Rf8 f4 45.Rf5 Rb6 46.Rh5 Rg6 47.Rh4 Ke4 48.Rg4?? Rh6 49.Kg2–/+ Rd6 50.h4 Rd2 51.Kf1?? Ke3 52.Rg1 f3 53.Ke1 (53.Ke1 f2 54.Kf1 Rd1 55.Kg2 fg1Q 56.Kh3 Kf3 57.h5 Qg3). iczker – slowplayer100, internet, 2011.

5.c4 c6

6.a4 dc4 7.Nc3 Be6 8.Ne4 Bb4 9.Bc3 a5 10.Bb4 ab4 11.Nc5 cb5?? 12.Ne6+- Qe7 13.d5 b3 14.e4 Nd7?? 15.Nc7 Kf7 16.Na8 b4 17.Bc4 Qe4 18.Qe2 Qd4 19.d6 Kg6 20.Bd3 f5 21.Qe6 Ngf6 22.Qf5 Kf7 23.Nf3 Qa1 24.Kd2 Qc3 25.Ke3 Ra8 26.Ng5 Kg8?? 27.Nh7 Nh7?? 28.Qh7+/– Kf8?? 29.Qh8+- Kf7 30.Qa8 b2?? 31.Qb7 Qc1 32.Kf3 Qh1 33.Qd7 Kf6 34.Qf5 1–0. iczker – drkohl, internet, 2011.

6.a4 dc4!? 7.e3 Be6 =+.

6.a4 Bd6 7.c5 Bc7 8.e3 Ne7 9.Nc3 0-0 10.Nge2 f5 11.g3 Nd7 12.Nf4 Nf6 13.Be2 Qe8 14.Nh5 Be6 15.Nf6 Rf6 16.Qd2 Qf7 17.0-0-0 Kh8 18.f4 ef3 19.Bf3 Re8 20.Ne2 g5 21.h4 g4 22.Bg2 Rh6 23.Nf4 Bf4 24.ef4 Bd7 25.Rde1 Ng8 26.Re8= Qe8 27.Re1 Re6 28.Re6 Qe6 29.Bf1 Nf6 30.Qe2 Ne4 31.Bg2 Ng3 32.Qe6 Be6 33.bc6 bc6 34.Kd2 Ne4 35.Be4 fe4 36.Ke3 Kg7 37.Bc3 Kg6 38.Kf2 Kf5 39.Kg3?? e3–+ 40.a5 Ke4 41.a6 Kd3 42.Ba5 Kd4 43.Bb6 Kd3 44.Ba5 d4 45.h5 Bc4 46.h6 Ba6 47.Kg4 Ke4 48.f5 Bc8 49.Kg5 Bf5 50.Be1 d3 51.Kf6 d2 52.Ke7 de1Q 53.Kd6 Qb4 54.Kc6 Kd4 55.Kd6 Qc5 0–1. iczker – marki37 (1660), internet, 2011.

6.a4 Bd6 7.c5 Bc7 8.e3 Ne7 9.Nc3 0-0 10.Nge2 f5 11.g3 Nd7 12.Bg2 Nf6 13.f4 ef3 14.Bf3 Ng6 15.Nf4 Nf4 16.ef4 Re8 17.Kf2 Ne4 18.Be4 fe4 19.Re1 Qd7 20.Re3 Qh3 21.Qf1 Qh2 22.Qg2 Qg2 23.Kg2 Bg4 24.a5 Rf8 25.b6 ab6–+ 26.ab6 Ra1 27.Ba1 Bd8 28.Ne2 g5 29.Kf2 gf4 30.Nf4 Bg5 31.Kg2 Bf4 32.gf4 Rf4 33.Rg3 h5 34.Bc3 Kf7 35.Bd2 Rf3 36.Rf3 ef3 37.Kg3 Kf6 38.Be3 Kf5 39.Kf2 h4 40.Bc1 Ke4 41.Bb2 Bh5 42.Bc3 h3 43.Kg3 Ke3 44.Be1–+ h2 45.Kh2 f2 46.Bf2 Kf2 47.Kh3 Ke3 48.Kh4 Be8 (48...Be8 49.Kg4 Kd4–+) 0–1. iczker – velryba (1695), internet, 2011.

6.a4 Be6 7.c5 Be7 8.e3 Nh6 9.Ne2 0-0 10.h3 f5 11.Nf4 Bf7 12.Be2 Qe8 13.g3 g5 14.Ng2 Bg6 15.Nd2 f4? 16.gf4+/– gf4 17.ef4 Nf5 18.Bg4 Bf6 19.Bf5 Bf5 20.Bc1?? Kh8 21.Nb3 Rg8 22.Rh2 a6 23.Be3 ab5 24.ab5 Ra1 25.Qb1?? Rb1–+ (25...Rb1 26.Nc1 cb5–+) 0–1. iczker – ivanemil, internet, 2011.

6.a4 Be6 7.c5 f5 8.e3 Nf6 9.Nc3 b6 10.cb6 ab6 11.Nge2 c5 12.dc5 Bc5 13.Nd4 Bd4 14.Qd4 0-0 15.Ba3 Re8 16.Be2 Nbd7 17.0-0 Rc8 18.Rfc1 Nc5 19.Bc5 Rc5 20.a5+/– ba5?? 21.Na4 Rc1=+ 22.Rc1 Re7 23.b6 Bc8 24.Nc5?? Qb6–/+ 25.Na4 Qb7 26.Nc5 Qc7 27.Nd3 Qb7 28.Ne5?? Rc7–+ 29.Rc7 Qc7 30.h4 Nd7?? 31.Qd5 Kh8 32.Nf7 Kg8 33.Nd8 Kh8= 34.Nf7 Kg8 35.Nh6 Kh8 36.Qg8 1–0. iczker – bilko, internet, 2011.

6.a4 Be6 7.c5 f5 8.e3 Nf6 9.Nh3 h6 10.Nf4 Bf7 11.Be2 Be7 12.Bh5 0-0 13.Bf7 Rf7 14.Ng6 Nbd7 15.Nd2 Nf8?? 16.Ne7?? Qe7= 17.0-0 g5 18.h3 Ng6 19.Re1 f4 20.ef4 gf4 21.Nf1 Qd7 22.bc6 bc6 23.Rb1? f3! 24.g4?? Nf4–+ 25.Ng3 Nh3 26.Kh2 Qg4 27.Rg1 Kh7 28.Bc1 Nf2 29.Qf1 Qh4 (29...Qh4 30.Qh3 Qh3) 0–1. iczker – zaklinac (1690), internet, 2011.

6.a4 f5 7.e3 Nf6 8.c5 Be7 9.Nc3 0-0 10.Nge2 Be6 11.Nf4 Qd7 12.Ne6 Qe6 13.bc6 bc6 14.a5 Nbd7 15.Ba6 Rab8 16.Rb1 g6 17.Ba3 Nh5 18.0-0 f4 19.ef4 Nf4 20.Ne2 Rb1 21.Nf4 Rd1–+ 22.Ne6 Rf1 23.Kf1 Rb8 24.Ke2 Rb3 25.Bc1 Rb1 26.Bd2 Ra1 27.Bc8 Nf6 28.Bg5?? Kf7 29.Bf6 Bf6 30.Nf4 Bd4 31.Be6 Kf6 32.Bd7 Ra5 33.Bc6 Ra2 34.Kd1 Rf2 35.Nd5 Ke5 36.Nb4 Bc5 37.Nc2 e3 38.Ne1 Kd4 39.Bf3 Bb4 40.Nc2 Kc3 41.Ne3 Ra2 42.Nc2 Rc2 43.Be4 Rd2 44.Kc1 Rf2 45.Bf3 Rf1 46.Bd1 Ba3 47.Kb1 Rd1 48.Ka2 Kb4 49.g3 Rd2 50.Kb1 Kb3 51.Ka1 1–0. iczker – velryba (1605), internet, 2011.

6.Nc3 Bb4 7.a4 Qa5 8.Rc1 dc4 9.e3 cb5 10.ab5 Qb5 11.Nge2 Ne7 12.Ng3 0-0 13.Nge4 Bc3 14.Bc3 Qd5 15.f3 Bf5?? 16.Nd2 Bd3 17.Bd3 cd3 18.e4 Qb5 19.Qb3 Qb3 20.Nb3 Nbc6 21.d5 Ne5 22.Be5 fe5 23.0-0 Rac8 24.Rfd1 Rc1 25.Nc1 Rc8 26.Nd3 Ng6 27.Rc1 Rc1= 28.Nc1 Kf7 29.Kf2 Ke7 30.Ke3 Kd6 31.g3 b5 32.Kd3 a5 33.Nb3 a4 34.Na1 Nf8 35.Kc3 Nd7 36.Kb4+/– 1–0. iczker – panropuch, internet, 2011.

6.Nc3 Be6 7.c5 f5 8.e3 Nf6 9.Nh3 Be7 10.Nf4 Bf7 11.h4 0-0 12.a4 Nbd7 13.Be2 Qc7 14.h5 Rfc8 15.a5 b6 16.ab6 ab6 17.bc6 Qc6 18.cb6 Nb6 19.0-0 Nc4 20.Bc4 Qc4 21.Ra8 Ra8 22.Qe2 Qe2 23.Nfe2 Bh5 24.Nf4 Bf7 25.Ra1 Ra1 26.Ba1 Bd6 27.Nh3 h6 28.f4 ef3! 29.gf3 g5 30.Kf2 Kg7 31.Nb5 Bb8 32.f4 Ne4 33.Kf3? g4 (33...g4 34.Kg2 gh3 35.Kh3 Nf2 36.Kg3 Nd1–+) 0–1. iczker – brbla (1725), internet, 2011.

5.e3 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 =.

6.a4 Bd7?? 7.c4?? dc4 8.Nc3 ab5 9.ab5 Ra1 10.Qa1 Bd6 11.Bc4 Qe7? 12.Nd5 Qd8+= 13.Ne2 Ne7 14.Nec3 c6 15.Ne7 Be7 16.bc6 Bc6 17.d5 Bd7 18.Ne4 Na6? 19.Ba6 ba6 20.d6 Bf8 21.Nf6! Kf7 22.Qa6?? gf6= 23.Qc4 Be6–/+ 24.Qc7 Qd7 25.Ba3?? Qc7–+ 26.dc7 Ba3 27.0-0 Rc8 28.Ra1 Bd6 29.g3 Rc7 30.f4 Bd5 0–1. iczker – beuafort, internet, 2011.

6.ba6 Na6 7.c4 (7.Nd2 Be6 8.Ne2 Bg4 9.f3 ef3 10.gf3=) 7...Be6 8.c5 Ne7 9.Nc3 Kf7 10.f3 =.

6.Nc3 f5 7.Nh3 (7.Nge2 Nf6+=) 7...ab5 (7...Nf6 8.Nf4+=) 8.Bb5 c6 9.Ba4 (9.Be2 Nf6+=) 9...Nf6 10.Nf4 (10.0-0 Bd6+=) 10...Qa5 (10...Bd6 11.0-0–/+) 11.Bb3 Ba3 12.Qc1 Bd6 13.0-0 (13.Qd2 b6–/+) 13...g5 Black gets strong initiative 14.Nfe2 Qc7 15.g3 h5 16.Kg2 (16.Ba4 b5 17.Bb5 cb5 18.Nb5 Qc6–+) 16...h4–+ 17.Rh1 Qf7 18.Kg1 (better is 18.Kf1–+) 18...Qh5 19.Qd2 (19.Qd1 hg3 20.Ng3 Qd1 21.Nd1 f4–+) 19...h3 (19...Qf3!? 20.h3–+) 20.Qc1 (20.Qd1 Qf3 21.Qf1 f4 22.ef4 gf4–+) 20...Qf3 21.Qf1 f4 22.Re1? (22.ef4 gf4 23.Rb1 Ng4–+) 22...Bg4 (better is 22...Qg2!? 23.Qg2 hg2 24.Kg2 f3 25.Kg1 fe2 26.h4–+) 23.ef4 gf4 24.gf4 Qg2! 25.Qg2 hg2 26.Kg2 Bf3 27.Kg1 Ng4 28.h3 (28.h4 Bh1 29.Kh1 Rh4 30.Kg2 Nh2 31.Nd5 cd5 32.Bd5 Kd7–+) 28...Bh1 29.hg4 Bf3 30.Ng3 Bf4 (30...Bg4?! 31.Nce4 de4 32.Ne4=) 31.Nce2 Bd2 32.Rd1 Bg5 33.c4 dc4 (33...Bg4?! 34.cd5 Rh3 35.dc6 bc6 36.Ne4–/+). Munkwitz,Wolfgang (1615) – Hasek,Frantisek (1765), TT–15 ETC, 2005.

6.c4 ab5 7.Qh5 g6 8.Qd5 Qd5 9.cd5 c6 10.dc6 =.

6.c4 ab5 7.Qh5 g6 8.Qd5 Qd5 9.cd5 Bd7 (9...c6 10.dc6=) 10.Ne2 (10.Nd2=) 10...Bb4 11.Nec3 Ne7 12.d6 cd6 13.Be2 0-0 14.0-0 d5 15.a3 Ba5 (15...Bd6 16.f3 f5 17.Bb5 ef3 18.Rf3 Bb5 19.Nb5=) 16.f3 ef3 17.Bb5? (better is 17.Bf3 Bc6 18.e4=) 17...Bc6 0–1. Van Esbroeck,Dirk – Miraglia,Jorge, email 4AMM–03 adj, 1997.

6.c4 Be6 7.Nc3 (7.Qb3 dc4 8.Bc4 Bc4 9.Qc4 Qd7 10.Nc3=; 7.cd5 Bd5 8.Nc3 Bb4 9.Qa4 Bc3 10.Bc3=; 7.ba6 Na6 8.c5 Ne7 9.Nc3 Kf7 10.f3=; 7.c5 ab5 8.Bb5 c6 9.Be2 b6 10.cb6=) 7...Bb4 8.Qa4 Bc3 9.Bc3 Qd7 10.cd5 =.

6.c4 Ne7 7.Nc3 ab5 8.cd5 b4 9.Ne4 Qd5 10.Qc2 =.

5.e3 Bb4

6.c3 Bd6 7.Ne2 (better 7.Qh5!? g6 8.Qd5+/-) 7...Ne7 8.Nd2 0-0 9.c4 c6 10.a4 f5 11.c5 Bc7 12.Ba3 Nd7 13.Qb3 Nf6 14.b6 ab6 15.cb6 Bb8 16.g3 Qe8 17.Bg2 g5 (17...Qf7 18.0-0=+) 18.f4 gf4 (18...ef3 19.Bf3 Rf7 20.Bb4=) 19.ef4 (19.Nf4 Rf7=) 19...Rf7 20.0-0 Ng6 21.Bc5 Rg7 22.a5 Qd7 23.Rfe1 Kh8 24.Nf1 Qf7 25.Ne3 Bd7 26.Ra4 Qe6 27.Qa2 Bd6 (27...Ra6 28.Nc2+=) 28.a6 ba6 29.Ra6 Ra6 30.Qa6 Bc8 (30...Rg8 31.Qa3 Be7 32.Rb1+-) 31.Qa8+- Bf8 (31...Ne8 32.Bh3 Nh4 33.Kh1+-) 32.Rb1 (better 32.Bh3!? Bb7 33.Bf5 Qg8+-) 32...Bb7+/- 33.Qb8 Kg8. AsceticKingK9 - bobby fissure, ChessWorld.net, 2021.

6.Bc3 Bc3 7.Nc3 Ne7 8.Nge2 Bg4 9.Qd2 0-0 10.Ng3 f5 (10...a6!?+=) 11.h3+= f4 12.Nge4 (worse is 12.hg4 fg3 13.fg3 a6+=; worse is 12.ef4 Be6=) 12...fe3 13.Qe3 Nf5 14.Qd2 Bh5 15.Nc5 (15.g4 de4 16.gh5 a6+= (16...Qd4? 17.Qd4 Nd4 18.0-0-0+-)) 15...Qf6 (15...b6 16.g4 bc5 17.dc5+=) 16.g4 Re8 17.Be2?? (better is 17.N5e4! de4 18.gf5 Qf5 19.Rg1=) 17...Nd4–+ 18.0-0 (18.0-0-0 Ne2 19.Kb2 Bf7–+) 18…Re2! (18...Re2 19.Qd3 Rc2 20.Nd5 Qe5–+; 18...Ne2?! 19.Ne2 Bf7 20.Rae1=) 0–1. Baer,Cy (1895) – Cuttica,Gerardo Axel (2200), remoteschach.de, 2007.

6.Bc3 Be7 (6...Bc3 7.Nc3 Ne7 8.Nge2 0-0 9.Nf4 a6 10.Qb1=) 7.Nh3 (7.a3 a6 8.Nh3 Bf5 9.Nf4 ab5 10.Bb5+=; 7.Nd2 f5 8.Nh3 Nf6 9.Be2 a6 10.a4+=; 7.Bd2 f5 8.c4 Nf6 9.Nh3 a6 10.cd5=; 7.Be2 Nh6 8.Qd2 0-0 9.Bb4 Be6 10.Be7+=) 7...Nh6 8.Nf4 g5 9.Nh5 a6 10.Nd2=.

6.Nd2 Ba5 7.c4 (7.c3 Ne7 8.Nb3 c6 9.Na5 Qa5 10.a4=) 7...Ne7 8.Ne2 a6 9.Nc3 f5 10.Qh5=.

6.Nd2 Be6 7.c3 (7.a3 Ba5 8.Ne2 Qd7 9.c4 dc4 10.Nc3=; 7.Ne2 Qd7 8.Nf4 Bg4 9.f3 Bd2 10.Kd2=; 7.Nh3 Bd2 8.Kd2 Ne7 9.Nf4 Qd7 10.Ba3=) 7...Ba5 8.Ne2 Bg4 9.f3 ef3 10.gf3=.

6.Nd2 Ne7 7.c3 Ba5 8.Nb3 c6 9.Na5 Qa5 10.Qb3=.

6.Nd2 Ne7 7.c3 Bd6 8.c4 c6 9.c5 Bc7 10.a4 0-0 11.Qb3 Kh8 12.Ne2 f5 13.Nf4 g5 14.Ne6?? (better is 14.Nh5=) 14...Be6–+ 15.bc6 Nbc6 16.Bb5 Rb8 17.0-0 a6 18.Be2 Qe8 19.f3 Qh5 (19...Qh5 20.g3 f4 21.ef4 gf4–+) 0–1. Taulien,Christian (2110) – Zimmermann,Bernd (2120), remoteschach.de, 2004.

6.Nd2 f5 7.a3 Be7 8.c4 Nf6 9.Nh3 Be6 10.Nf4=.

6.Nd2 Nh6 7.c3 Be7 8.c4 Be6 9.Ne2 dc4 10.Nf4=.

6.c3 Ba5

7.Nd2 Ne7 8.Nb3 Bb6 9.c4 c6 10.c5 Bc7 11.Qh5 g6 12.Qd1 0-0 13.Rb1 cb5 14.Bb5 Bd7 (14...Bd7 15.Bd7 Qd7=).

7.Nd2 Ne7 8.Nb3 c6 9.Na5 Qa5 10.a4=.

7.Be2 a6 8.ba6 Na6 9.Nd2 c6 10.Bh5+=.

7.Ne2 Ne7 8.Nf4 0-0 9.Ba3 c6 10.Qb3=.

7.Nh3 Ne7 8.Nf4 0-0 9.Ba3 c6 10.Qh5+=.

7.Qh5 g6 8.Qd1 a6 9.Nd2 ab5 10.Bb5=.

5.e3 c6

6.a4 a6 7.c4 cb5 8.ab5 a5 9.Nc3 Be6 10.c5 b6 11.c6 Bb4 12.Qb3 Ne7 13.Nge2 Qd6 14.Nf4 Bc3 15.Qc3 Qc7?? 16.Ne6 Qd6 17.Ng7 Kf7 18.Nh5 Rc8 19.Ba3 Qc7 20.Be7 Ke7 21.Qa3 Kf7 22.Nf4 Nc6 23.bc6 Qc6 24.Be2 Qc3 25.Qc3 Rc3 26.Nd5 Rb3 27.Bc4 Kg6 28.Nf4 Kg7 29.0-0 Rc3 30.Rfc1 Rc1 31.Rc1 Rc8 32.Ne6 Kh6 33.g4 b5 34.Bb5 Rc1 35.Kg2 Rb1 36.Be8 Rb8 37.Bc6 Rb6 38.d5 Ra6 39.f4 ef3 40.Kf3 a4 41.Ba4! Ra4 42.d6 Ra7 43.Nc7 Kg6 44.d7 Rc7 45.d8Q Rf7 46.Qe8 Kg7 47.Qf7! Kf7 48.Kf4 Ke6 49.e4 h6 50.h4 Kd6 51.Kf5 Ke7 52.e5 fe5 53.Ke5 Kf7 54.Kf5 Kg7 55.Ke6 Kg6 56.Ke5 h5?? 57.g5+- Kf7 58.Kf5 Kg7 59.Ke6 Kg6 60.Ke7 Kf5 61.Kf7 Kg4 62.g6 Kh4 63.g7 Kh3 64.g8Q h4 65.Kf6 Kh2 66.Kf5 h3 67.Kf4 Kh1 68.Qg3 h2 69.Qf3 Kg1 70.Kg3 h1Q 71.Qf2 1–0. iczker – ssmiercc, internet, 2011.

6.a4 Bb4 7.Bc3 Qe7 8.Ne2 Nh6 9.h3 0-0 10.Qc1 a6 11.Qb2 Bc3 12.Nbc3 cb5 13.ab5+/– Be6 14.Nf4 Bf7 15.Ncd5 Bd5 16.Nd5 Qd6 17.Bc4 Kh8 18.ba6 Ra6? 19.Ba6 ba6 20.Nf4 Nd7 21.0-0 Rb8 22.Qa3 Qc6 23.Qa6 Rb6 24.Qa8 Ng8 25.Qc6 Rc6 26.Ra8 g5 27.Nd5 Rc2 28.Ne7 Kg7 29.Ng8 h5 30.Ne7 Kf7 31.Nf5 g4 32.Ra7 Ke6 33.d5! Kf5 34.Rd7 gh3 35.gh3 Rc8 36.Rh7 Rg8 37.Kh2 Kg6 38.Rc7 Kf5 39.d6 Ke6 40.d7 Rd8 41.Ra7 h4 42.Rg1 f5 43.Rg6 Kf7 44.Rh6 Ke7 45.Rc6 Rd7 46.Rd7 Kd7 47.Rh6 Ke7 48.Rh4 Kf6 49.Rf4 Ke5 50.h4 Kf6 51.h5 Kg5 52.Kg3 Kh5 53.Rf5 Kg6 54.Rf4 Kg5 55.Re4 Kf5 56.f4 Kf6 57.Kg4 Kf7 58.f5 Kf6 59.Kf4 Kf7 60.Kg5 Kf8 61.f6 Kf7 62.Kf5 Kf8 63.Kg6 Kg8 64.Re8 1–0. iczker – darekc67, internet, 2011.

6.a4 Bd7 7.c4 Bd6 8.c5 Bc7 9.Nc3 Ne7 10.h3 0-0 11.Nge2 Be6 12.Rc1 Nd7 13.Nf4 Bf4 14.ef4 Ng6 15.Ne2 f5 16.Ng3 Ne7 17.Be2= g6 18.0-0 Kg7 19.h4 Nf6 20.h5 h6 21.hg6 Ng6 22.Nh5 Nh5 23.Bh5 Rg8 24.Bg6= Kg6 25.g3 Kh7 26.Kg2 Qe8 27.Rh1 Qg6 28.Qh5 Bf7 29.Qg6 Rg6 30.f3 Rag8 31.Rh3 Kg7 32.Rch1 Kf8 33.fe4 de4 34.Rh5?? Rg3–+ 35.Kf1 Bc4 36.Ke1–/+ Re3 37.Kd2?? Re2 38.Kc1?? Rgg2 39.Ba3 Rc2 40.Kb1 Bd3 41.Ka1 Ra2 0–1. iczker – workitout (1695), internet, 2011.

6.a4 f5 7.c4 Nf6 8.Qb3 Bd6 9.h3 (9.Nc3!? f4 10.ef4 Bf4 11.Nge2+=) 9...0-0=+ 10.cd5 cd5 11.Ba3 (11.Ne2 Be6=+) 11...f4 (11...Ba3 12.Qa3 Be6 13.a5=+) 12.Bd6 (12.ef4 Be6=+) 12...Qd6 13.Ne2 (13.ef4 Qf4 14.Ne2 Qc7=+) 13...fe3–/+ 14.Qe3 Be6 15.Nf4 Ng4 16.hg4 Qf4 (16...Rf4 17.Be2 Nd7–/+ (17...Bg4?! 18.g3 Bf3 19.Qf4 Qf4 20.gf4 Bh1 21.Nc3+=)) 17.Qf4=+ Rf4 18.Be2 Nd7 (18...Bg4 19.Rh4 h5 20.Nc3+-) 19.g3 (19.Nc3 Raf8 20.0-0 Nb6=+) 19...Rff8–/+ 20.Rh2 Rac8 21.Kd2 Rf7 22.Na3 (22.Nc3!?–/+) 22...Nf6–+ 23.g5 Ng4 24.Rh4?? (24.Bg4 Bg4 25.Re1 Rcf8–+) 24...Nf2 (better 24...Rf2!? 25.b6 ab6 26.g6–+) 25.Rf4 (25.Nc2 e3! 26.Ne3 Ne4 27.Re4 de4–+) 25...Nh3 (better 25...Rf4 26.gf4 Nh3 27.b6 ab6 28.Bf1 Nf4 29.Rb1–+) 26.Rh4? (26.Rf7 Kf7 27.Rf1 Ke7 28.g6 hg6 29.Nc2–+) 26...Ng5 27.Rf4 Rf4 28.gf4 Nh3 29.Rf1 (29.f5 Bf5 30.Nc2–+) 29...e3! 30.Ke3 Rc3 31.Bd3 White prepares the advance f5 (31.Kd2 Ra3 32.f5 Bd7–+) 31...Ra3 32.f5 Bd7 33.f6 (33.Rf3 Ng5 34.Rf1 Ne4–+) 33...g5 34.f7 (34.Kd2 Nf4 35.Bb1 Ra4–+) 34...Kf8 35.Kd2 Ra4 36.Bh7 (36.Rc1 Rd4 37.Ke3 Rf4–+) 36...Rd4 37.Ke3 (37.Kc3 Rf4 38.Re1 Rf7–+) 37...Rf4 38.Rd1 d4! 39.Rd4 Rd4 40.Kd4 Kf7 41.Bd3 (41.b6 ab6 42.Be4 Bc6–+) 41...g4 42.Ke3 (42.Ke5 b6–+) 42...Ke6 43.Bf1 (43.Be2 Ke5 44.b6 ab6–+) 43...Ke5 44.Bd3 (44.Bg2 b6 45.Bb7 Nf4–+) 44...b6 45.Bc4 Be6 46.Be2 Nf4 47.Bf1 g3 48.Kf3 g2! 49.Bg2 (49.Bg2 Bd5 Deflection (49...Bd5 Decoy)) 49...Ng2 50.Kg2 Kd4 51.Kf2 Kc3 (better 51...Bd7 52.Kg3–+) 52.Ke1 Kc2 (52...Kc2 53.Kf2 Bc4–+) 0–1. Denisov,Anatoly – Portnoy,Yuriy (1975), Zavolje, 2009.

6.c4 Bd6 7.bc6 bc6 8.cd5 cd5 9.Bb5+= Bd7? 10.Qh5+- g6 11.Qd5 Qa5? 12.Bc3 Qb5 13.Qa8 Qd3 14.Ne2 Bb5 15.Nc1 Qc2 16.Bd2 Bb4?? 17.Qb8 Kf7 18.Qb5 Bd2 19.Nd2 Qc1 20.Rc1 (20.Rc1 Kg7 21.Qd7 Kh6 22.Qh3 Kg7 23.Rc7 Ne7 24.Re7 Kf8 25.Qe6 h6 26.Qf7) 1–0. Trkn – guest1208, ICC, 2004.

6.c4 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.c4 c6).

5.e3 Bd6

6.c4 Bb4 7.Bc3+/– Bc3 8.Nc3 Be6 (8...dc4!? 9.Ne4 Qe7+/–) 9.cd5 Bd5 (9...Bf7 10.Ne4 Bd5 11.Qg4+-) 10.Qg4 (10.Qg4 g6 11.Nd5+- (11.Ne4?! f5 12.Qf4 Be4=)) 1–0. pcmvr (2530) – escape (2005), net–chess.com, 2006.

6.c4 Bb4 7.Nc3 Ne7= 8.Qb3 (8.Nge2 dc4 9.Nf4 g5+=) 8...Bc3 9.Bc3 c6 (9...Be6 10.Bb4=) 10.a4 (10.cd5 Nd5 11.Rc1 a6 12.bc6 A) 12...Nc3?? 13.cb7 (13.Qc3?! Nc6 14.Bc4 Bf5=) 13...Bb7 14.Qb7+- (14.Rc3?! Qa5+-; 14.Qc3?! Nd7+-); B) 12...Nc6=) 10...0-0 11.Ne2 Kh8 (11...dc4 12.Qc4 Nd5 13.Nf4=) 12.Bb4 (12.Nf4 g5 13.Nh5 Nd7+=) 12...a5 (12...dc4 13.Qc4 a6 14.Rc1+=) 13.Ba3 (13.Be7 Qe7 14.cd5 cd5 15.Qd5 Qb4 16.Kd1 Re8+-) 13...Re8 (13...dc4!? 14.Qc4 Re8+=) 14.Nf4+- g5 (14...dc4 15.Bc4 cb5 16.Bb5+-) 15.Nh5 Ng6 16.Ng3 (16.cd5 cd5 17.Be2 Be6+-) 16...Be6 (16...f5 17.cd5 cd5 18.Ne2+=) 17.cd5 (17.bc6 bc6 18.Rb1 f5+-) 17...cd5 18.Be2 b6 (18...f5 19.0-0+=) 19.Bh5+- f5 (19...Ra7 20.Rc1+-) 20.Ne2 (20.Rc1 Qf6+-) 20...Kg7 (20...Nd7 21.Rc1+-) 21.g3 (21.Rc1!?+-) 21...Nd7+= 22.h4 h6 (22...g4 23.Bg6 hg6 24.Nf4+=) 23.Rc1 (23.hg5 hg5 24.g4 fg4+=) 23...Rc8 (23...Nf6 24.hg5 hg5 25.Bg6 Kg6 26.Qb2+=) 24.Kd2 (24.Rc8 Qc8 25.g4 fg4 26.hg5 hg5 27.Bg6 Kg6=) 24...Rc4 (24...Nf6 25.Rc8 Bc8 26.Bg6 Kg6 27.hg5 hg5=) 25.Nc3 (25.hg5 hg5 26.Nc3 Nde5+-) 25...Nf6 (25...g4 26.Ne2=) 26.Be2+= Rc8 (26...gh4 27.gh4 Rc7 28.h5+=) 27.Rc2 (27.hg5 hg5 28.Rh2 Rh8+=) 27...Qd7 (27...gh4 28.gh4 f4 29.h5=) 28.hg5+= hg5 29.Rhc1 (29.Rcc1 Rh8=) 29...Rh8 30.Nd1 f4 (30...Rc2 31.Qc2 Rc8 32.Qc8 Qc8 33.Rc8 Bc8 34.Bd6+=) 31.Rc8 Rc8 32.Rc8 (32.gf4 Rc1 33.Bc1 gf4 34.ef4 Kf7+=) 32...Qc8= 33.gf4 gf4 34.ef4 Nf4 (better 34...Bg4!?=) 35.Qg3+- Ng6 36.Bd6 (36.Nc3!?+-) 36...e3+= 37.Ke1 (37.Ke3?? Qc1 38.Kf3 Ne4 39.Be5 Kf7–+) 37...Ne4 (37...ef2 38.Nf2 Qc1 39.Bd1+=) 38.Be5+- Kf7 (38...Kf8 39.Qe3 (worse 39.Qg6 ef2 40.Nf2 Qc1 41.Nd1 Qd2 42.Kf1 Bh3 43.Kg1 Qe2 44.Bd6 Nd6 45.Qd6 Ke8 46.Qg6 Kd7=) 39...Ne5 40.de5+-) 39.Qe3 Ne5 40.Qf4 Ke7 41.Qe5 (41.de5?! Qc5 42.Qe3 Qb4 43.Kf1 Nc5= (worse 43...Qa4 44.Qb6 Qb4 45.Qc7 Kf8 46.b6 Nd2 47.Kg1+-)) 41...Kd7?? (41...Nf6 42.Bd3+-) 42.f3 (better 42.Qe6! Ke6 43.Bg4 Kd6 44.Bc8+-) 42...Nd6+- 43.Ne3 (43.Qg7 Ke8+-) 43...Nf7 44.Qf6 (44.Qg7 Qc7+-) 44...Qg8 (44...Qc3 45.Kf2+-) 45.f4 (45.Ng4 Qh7 46.Qf7 Qf7 (46...Bf7?? 47.Nf6 Ke7 48.Nh7+-) 47.Ne5 Ke7 48.Nf7 Bf7+-) 45...Nd6 (45...Qg3 46.Kd2 Nd6 47.Qe5+-) 46.Qg5 Qh7 (46...Qh8 47.Bg4 Qd4 48.Be6 Ke6 49.Qg8 Kd7 50.Nd5 Qe4 51.Kf1 Qd3 52.Kg2 Qe2 53.Kg1 Qd1 54.Kf2 Qd2 55.Kg3 Nf5 56.Kh3 Qd3 57.Kh2 Qe2 58.Qg2 Qh5 59.Kg1 Qd1 60.Kf2 Qd2 61.Kf1 Qd1 62.Kf2 Qd2 63.Kf1 Qd1 64.Kf2=) 47.Bf3?? (47.Bg4 Qe4 48.f5 Qb1 49.Ke2 Bf7 50.f6 Kc7+-) 47...Qd3 (47...Qb1 48.Bd1 Qb4 49.Ke2 Qd4 50.Qe5 Qe5 51.fe5=) 48.f5 (better 48.Qg7!? Kd8 49.Qe5+-) 48...Nf5 (48...Qc3 49.Ke2 Qb2 50.Kd3 Bf5 51.Nf5 Qb1 52.Kd2 Nf5 53.Qg4=) 49.Nf5 Qf5 50.Qg7 (50.Qf5 Bf5 51.Kd2 Kd6=) 50...Qf7 (50...Kd8 51.Be2=) 51.Qg3 (51.Qf7 Bf7 52.Kd2 Ke6=) 51...Qe7 (51...Qf6 52.Qf2=) 52.Kf2 Qf6 (52...Qh7 53.Ke3=) 53.Ke3 (53.Qe5 Qe5 54.de5 d4=) 53...Qh6 (53...Qe7 54.Qe5=) 54.Ke2 (54.Qf4 Qg6=) 54...Qf6 (54...Qh7 55.Qe5 Qc2 56.Ke3 Qc1 57.Kf2 Qc2 58.Kg3 Qa4 59.Bd5 Qa3 60.Kf2 Bd5 61.Qd5 Qd6 62.Qf7 Kd8 63.Qc4=) 55.Kd3 (55.Qe5 Qf5=) 55…Qe7 ½–½. Matveenko,Yury (2135) – Ibragimov,Eduard (1950), RUS–ch Seniors, 2008.

6.c4 Be6 7.Nc3 Bb4 8.cd5 Qd5 9.a3 Bc3 10.Bc3 a6=.

6.c4 Be6 7.c5 Be7 (7...Bf8 8.Ne2 Bg4 9.Nbc3 Ne7 10.Qb3 c6+=) 8.Ne2 f5 9.Nf4 Qd7 10.Be2 Nf6+=.

6.c4 Be6 7.Nd2 Qd7 (7...Bb4 8.Ne2 Qd7 9.Bc3 Bd6 10.c5 Be7+=) 8.c5 Be7 9.Qh5 Kd8 10.Qe2 a6=.

6.c4 Be6 7.cd5 Bd5 8.Nc3 Bb4 9.Qa4 Bc3 10.Bc3 Ne7=.

6.c4 Be6 7.cd5 Bd5 8.Nc3 Bb4 9.Nge2 Ne7 10.g3 (10.a3 Ba5=) 10...0-0 11.Bg2 f5 12.0-0 Bc3 13.Nc3 Nd7 14.Nd5 (14.f3 ef3 15.Bf3 Bf3 16.Qf3 c6+=) 14...Nd5= 15.f3 Qe7 (15...Qg5 16.Bc1 N7f6 17.Qb3=) 16.fe4 (16.Qb3 Qe6 17.fe4 fe4+-) 16...fe4+= 17.Qb3 N7b6? (17...Rf1!? 18.Rf1 c6+=) 18.a4 (18.Rf8 Qf8 19.Be4 Qf7+-) 18...a5? (18...Rf1 19.Rf1 c6+-) 19.Ba3?? (better 19.ba6 Rf1 20.Rf1 ba6 21.a5+-) 19...Rf1+- 20.Rf1 Qe6 21.Bc5 h6? (better 21...Kh8+-) 22.Rf4?? (better 22.Bb6 cb6 23.Bh3 Qh3 24.Qd5 Kh8 25.Qb7+-) 22...Nf4–+ 23.Qe6 Ne6 24.Be4 (24.Bb6 cb6 25.Be4–+) 24...Nc5 25.dc5 Na4 26.Bb7 Re8 (26...Ra7 27.Bd5 Kf8 28.e4–+) 27.Kf2 (27.Bc6 Rd8 28.Kf1 Nc5–+) 27...Nc5 28.Bc6 Re7 (28...Re7 29.Kf3 a4 30.Bd5 Kf8–+) 0–1. aravind555 (1765) – Silsile (1815), lichess.org, 2020.

6.c4 f5 A) 7.cd5 Nf6 (7...Nd7 8.Nh3 Ngf6 9.Nc3 Nb6 10.Qb3 Nfd5=; 7...Ne7 8.Nc3 Bb4 9.Bc4 Nd5 10.Qb3 Bc3+=) 8.Nc3 Nbd7 9.Qb3 Nb6 10.Bc4 Nc4=; B) 7.Nc3 Nf6 (7...dc4 8.Bc4 Qg5 9.g3 Nd7 10.Qb3 Nh6=) 8.c5 Be7 9.Nge2 a6 10.Nf4 g5=.

6.c4 Bf5 A) 7.cd5 Ne7 (7...Nd7 8.Ne2 Ne7 9.Nec3 Nb6 10.g4 Bg6+=; 7...Nh6 8.Qc2 0-0 9.Ne2 Bd7 10.Qe4 Bb5+/–) 8.Bc4 Nd7 9.Nc3 Nb6 10.Bb3 a6=; B) 7.Nc3 dc4 (7...Bb4 8.Nge2 Ne7 9.Qa4 Qd6 10.a3 Bc3+=) 8.Bc4 c6 9.Qb3 Ne7 10.Bf7 Kf8+=.

6.Nd2 Bb4 A) 7.a3 Bd2 (7...Ba5 8.c4 Ne7 9.Ne2 Bg4 10.h3 Bh5=) 8.Qd2 a6 9.Qa5 Ne7 10.c4 0-0=; B) 7.c3 Ba5 (7...Be7 8.c4 f5 9.Ne2 Nf6 10.Nf4 c6+=; 7...Bf8 8.c4 Be6 9.Ne2 Ne7 10.cd5 Bd5+=) 8.Nb3 c6 9.Na5 Qa5 10.Nh3 Ne7=; C) 7.c4 Ne7 (7...Be6 8.Ne2 Qd7 9.Bc3 Bd6 10.c5 Be7+=) 8.Ne2 Bg4 9.Qc2 c6 10.Bc3 Bd6=.

6.Nd2 c6 7.a4 (7.bc6 bc6 8.c4 Ne7 9.c5 Bc7 10.Rb1 0-0=; 7.c4 Ne7 (7...Be6 8.Qb3 Qd7 9.bc6 bc6 10.Rb1 a5+=; 7...Bf5 8.c5 Bc7 9.Qa4 Ba5 10.Ne2 Bd2=) 8.bc6 bc6 9.Rb1 Nd7 10.Qg4 Kf7=; 7.a3 Ne7 (7...Nd7 8.c4 Ne7 9.Qg4 Kf7 10.bc6 bc6=; 7...Be6 8.c4 Ne7 9.c5 Bc7 10.Qb3 Qc8=; 7...Bf5 8.c4 Ne7 9.Rb1 0-0 10.bc6 bc6=; 7...Qa5 8.c4 Ne7 9.c5 Bc7 10.Qb3 Bd8+=) 8.c4 0-0 9.c5 Bc7 10.Rb1 Bf5=; 7.Nh3 Ne7 (7...Qa5; 7...Nh6; 7...Qc7) 8.c4 0-0 9.c5 Bc7 10.Ng1 Ba5+=) 7...a6 (7...Ne7 8.c4= 0-0 9.Qb3 Bf5 10.Ne2 Qd7=; 7...Bb4 8.c4 Be6 9.cd5 Bd5 10.Ne2 Ne7=; 7...Bc7 8.c4 Be6 9.Rc1 f5 10.Nh3 Nf6=; 7...Be6 8.Ba3 Ba3 9.Ra3 Ne7 10.Ne2 Ng6=; 7...Qa5 8.Ba3 Ba3 9.Ra3 Ne7 10.c4 0-0=) 8.c4 Nd7? (8...ab5 9.c5 Bc7 10.ab5 Ra1 11.Ba1=) 9.c5 (better is 9.bc6 bc6 10.cd5+/–) 9...Bb8= 10.b6 +/–. Sokolski,Alexei – Livshitz, Mate5/32, 1956.

6.Nd2 Be6 A) 7.Ne2 Ne7 (7...Nh6 8.c4 c6 9.Nc3 Qd7 10.Qb3 Be7+=; 7...c6 8.c4 Ne7 9.Nc3 0-0 10.bc6 bc6=; 7...a6 8.c4 dc4 9.Nc3 Bb4 10.Nde4 c6=; 7...Qd7 8.c4 dc4 9.Nc3 Bb4 10.Qa4 Bc3+=) 8.c4 c6 9.Nc3 0-0 10.bc6 bc6=; B) 7.c4 Qd7 (7...Bb4 8.Ne2 Qd7 9.Bc3 Bd6 10.c5 Be7+=; 7...f5 8.Nh3 Nf6 9.c5 Be7 10.Be2 Bd7+=; 7...Nh6 8.Qb3 Be7 9.Rc1 f5 10.Nh3 dc4+=; 7...c6 8.Qb3 Qd7 9.bc6 bc6 10.c5 Be7+=) 8.c5 Be7 9.Qh5 g6 10.Qd1 c6=.

6.Nd2 Be7 7.c4 f5 (7...Be6 8.Ne2 Bg4 9.cd5 Qd5 10.Qa4 Be2+/–; 7...Bf5 8.cd5 Bb4 9.Bc4 Nd7 10.Ne2 Nb6+=) 8.Ne2 Nf6 9.Nf4 c6 10.bc6 bc6+=.

6.Nd2 Ne7 A) 7.Rc1 0-0 (7...c6 8.c4 Bf5 9.bc6 Nbc6 10.Ne2 Rc8=; 7...Nd7 8.c4 c6 9.Qg4 Kf7 10.cd5 cd5=; 7...Be6 8.c4 c6 9.Qb3 Qd7 10.c5 Bc7=; 7...Bf5 8.c4 c6 9.Qb3 0-0 10.Ne2 Qd7=) 8.c4 Bb4 9.Bc3 Bc3 10.Rc3 a6=; B) 7.Ne2 c6 (7...Bg4 8.c4 Bb4 9.Qc2 c6 10.Bc3 Bd6=; 7...0-0 8.c4 c6 9.cd5 cd5 10.Qb3 f5=; 7...Bb4 8.c4 Bg4 9.Qc2 c6 10.bc6 bc6=; 7...a6 8.c4 dc4 9.ba6 Na6 10.Nc3 f5=) 8.c4 cb5 9.cd5 f5 10.Qb3 a6=; C) 7.c4 c6 (7...Bb4 8.Ne2 Bg4 9.Qc2 c6 10.Bc3 Bd6=) 8.bc6 bc6 9.Rb1 0-0 10.Qa4 f5=.

6.Nd2 Bf8 7.c4 f5 (7...Ne7 8.cd5 Bf5 9.Ne2 Nd5 10.Ng3 Qd7+/–; 7...Be6 8.Ne2 Ne7 9.cd5 Bd5 10.Nc3 f5+/–; 7...Bf5 8.cd5 Bb4 9.Qc2 Ne7 10.Ne2 Nd5+=) 8.Ne2 Nf6 9.Nf4 c6 10.bc6 bc6+=.

6.Nd2 g6 7.c4 Be6 (7...Bb4 8.a3 Bd2 9.Qd2 Ne7 10.Ne2 a6+=; 7...c6 8.bc6 bc6 9.Qa4 Be6 10.Ba3 Ba3+=) 8.Ne2 c6 9.c5 Bc7 10.Qa4 cb5+=.

6.Qh5 g6+= 7.Qd5?? (better is 7.Qd1+=) 7...Bb4–+ 8.Bc3 Qd5 9.Bb4 c6 (9...a5 10.c4 Qd8 11.Bc3–+) 10.c4 Qf7 11.Na3 (11.Nc3 Bf5–+) 11...Ne7 12.bc6 a6 (12...Nbc6!? 13.Nb5 0-0 14.Bc3–+) 13.c7 (13.cb7 Bb7 14.d5 Nd7–+) 13...Nbc6 14.Bd6 (14.Bc3 Nf5 15.g4 Qe7–+) 14...0-0 (14...Nf5!? 15.c5–+) 15.c5 (15.d5 Ne5–+) 15...Be6 16.Nh3 (16.Be2 Rfc8 17.f3 ef3 18.Nf3 Nf5–+ (18...Ba2?! 19.Ra2 Qe6 20.Bc4–/+)) 16...Nd5 (16...Bh3 17.gh3 Rfc8 18.Bc4–+) 17.Bf8 Kf8 (worse is 17...Qf8 18.Bc4–+) 18.Nc4 (18.Bc4 Bh3 19.gh3 Ncb4–+) 18...Qc7 19.Be2 (19.Rb1 Bh3 20.gh3 Rd8–+) 19...Nc3 (19...Ncb4 20.Rd1 Bh3 21.gh3 Na2 22.Nd6–+) 20.Nb6 Rd8 21.Nf4 (21.Bc4 Bh3 22.gh3 Nb4–+) 21...Bf7 (21...Nd4 22.Rc1 Nce2 23.Ne2 Ne2 24.Ke2–+) 22.Bc4 (22.Rc1 Na2 (worse is 22...Ne2 23.Ne2 Nb4 24.0-0–+) 23.Rd1 g5–+) 22...g5 (better is 22...Nd4!? 23.ed4 Qf4 24.Bf7–+) 23.Nh3 (23.Ne2 Bc4 24.Nc3 Bd3–+) 23...Bc4 (23...g4 24.Ng1–+) 24.Nc4 Nd4 (better is 24...g4!? 25.Nf4 Nd4 26.ed4 Qf4 27.Nd6–+) 25.ed4 g4 (25...Rd4 26.Nd6–+) 26.Ng1 Rd4 27.Ne3 Qa5 28.f4 (28.Ne2 Ne2 29.Ke2 Rd2 30.Kf1 Qc5 31.a4–+) 28...Nd1 (28...Nd1 29.Kf1 Ne3 30.Kf2 Qc5–+) 0–1. Kalka,M – Giese,Faik, Bochum Post op, 1990.

6.c4 dc4

7.Bc4 a6 A) 8.Nc3 A1) 8...Qe7 9.Qa4 Nd7 10.Qb3 Kf8 11.ba6 ba6 12.Qc2+=; A2) 8...f5 9.Nh3 (9.Nge2 c6 10.a4 Nf6 11.Qb3 ab5 12.ab5+=; 9.Bg8 Qg5 10.Qb3 Qg2 11.Qf7 Kd8 12.Kd2+=; 9.Qa4 Qg5 10.g3 Nf6 11.ba6 Ke7 12.Nb5+=; 9.Qb3 Nh6 10.Nge2 c6 11.a4 cb5 12.ab5+=) 9...Nf6 10.Ng5 ab5 11.Nb5 Bb4 12.Bc3+=; B) 8.Qb3 B1) 8...Ne7 9.Bf7 (9.Nc3 f5 10.Bf7 Kf8 11.Nge2 c6 12.a4+=; 9.Ne2 ab5 10.Bb5 c6 11.Bc4 Ng6 12.a4+=) 9...Kf8 10.Nc3 f5 11.Nge2 c6 12.bc6+=; B2) 8...Nh6 9.Nc3 (9.ba6 Na6 10.Nc3 f5 11.Nge2 c6 12.a4=; 9.Nd2 f5 10.ba6 Na6 11.Ne2 Qh4 12.Ng3=) 9...f5 10.Nge2 c6 11.a4 cb5 12.ab5+=; C) 8.Nd2 f5 9.Qa4 (9.Qb3 Nh6 10.Rc1 ab5 11.Bb5 c6 12.Be2=) 9...Qg5 10.Bf1 Qe7 11.Nc4 Bb4 12.Kd1=; D) 8.Qh5 g6 9.Qh4 (9.Qd5 Qe7 10.Nd2 f5 11.ba6 Na6 12.Qb5=) 9...Bf5 10.Nc3 g5 11.Qh5 Bg6 12.Qd1=; E) 8.ba6 Na6 9.Ne2 (9.Qb3 Nh6 10.Nc3 f5 11.Nge2 c6 12.a4=; 9.Nc3 f5 10.Qb3 Nh6 11.Nge2 c6 12.a4=; 9.Nd2 f5 10.Qb3 Nh6 11.Ne2 c6 12.a4=) 9...Nb4 10.a3 Nc6 11.Bd5 f5 12.Bc6=; F) 8.Ba3 ab5 (8...Ba3) 9.Bb5 (9.Bg8 Ba3 10.Na3 Ra3 11.Qh5 g6 12.Qb5+=) 9...c6 10.Bd6 Qd6 11.Bc4 Be6 12.Be6=; G) 8.Qc2 f5 (8...Qe7) 9.Qa4 (9.Qb3 Qg5 10.Ne2 Nf6 11.ba6 Na6 12.0-0=; 9.ba6 Na6 10.Ne2 Nf6 11.Qb3 c6 12.0-0=) 9...Qg5 10.Ne2 Nf6 11.Ng3 f4 12.ef4=; H) 8.Bg8 Rg8 9.Nc3 (9.Qh5 g6 10.Qh7 Be6 11.Nc3 f5 12.b6=; 9.Nd2 Bb4 10.Ne2 Qe7 11.Bc3 Bd6 12.Qb3=) 9...Bb4 10.Qh5 g6 11.Qh7 Be6 12.ba6+=; I) 8.Qa4 I1) 8...Bd7 9.Ne2 (9.Nc3 f5 10.Nh3 c6 11.Qb3 Nh6 12.b6+=; 9.Qb3 Nh6 10.Bd5 f5 11.Bb7 Ra7 12.ba6+=) 9...f5 10.Ba3 Nf6 11.Bd6 cd6 12.Nbc3+=; I2) 8...Qd7 9.Ba3 (9.Nd2 f5 10.Ba3 Nf6 11.Ne2 Ba3 12.Qa3+=; 9.Nc3 f5 10.Nge2 Ne7 11.Ba3 Ba3 12.Qa3+=; 9.Ne2) 9...Qg4 10.Bd6 Qg2 11.ba6 Nc6 12.ab7+/–; I3) 8...c6 9.Nc3 (9.Nd2 Bf5 10.bc6 Nc6 11.Bd5 Nge7 12.Be4+=) 9...f5 10.bc6 bc6 11.Nge2 Qg5 12.Qb3+=; I4) 8...Ne7 9.Ne2 (9.Nc3 Bf5 10.ba6 c6 11.Qc2 Na6 12.Ne4+=; 9.ba6 c6 10.Qb3 Na6 11.Bf7 Kf8 12.Nc3=; 9.Bc3 Bf5 10.ba6 c6 11.Qb3 b5 12.Bf7=; 9.Nd2 f5 10.Ne2 Bd7 11.Rb1 c6 12.b6=) 9...Bd7 10.Nbc3 f5 11.Qb3 Ra7 12.ba6+=.

7.Bc4 Qe7 A) 8.Qc2 f5 (8...a6 9.Nc3 f5 10.Nge2 Nf6 11.Qa4 Bd7 12.0-0+=) 9.Nc3 (9.Nh3 Nf6 10.Nc3 c6 11.bc6 Nc6 12.Rd1=; 9.Ne2 Nd7 10.0-0 Nb6 11.Nd2 Qh4 12.h3=; 9.Nd2 a6 10.b6 Nf6 11.bc7 Qc7 12.Rc1=; 9.Qb3 Nf6 10.Nh3 a6 11.Nc3 c6 12.b6=) 9...Qg5 10.g3 Nf6 11.Nh3 Qh6 12.Nf4=; B) 8.Ne2 B1) 8...Be6 9.d5 (9.Be6 Qe6 10.Ba3 f5 11.Bd6 Qd6 12.Qb3+=; 9.Nd2 Bc4 10.Nc4 Bb4 11.Bc3 Nd7 12.Rc1+=) 9...Bg4 10.Qc2 Nd7 11.Nd2 Nc5 12.0-0+=; B2) 8...a6 9.Qb3 (9.Qa4 Be6 10.d5 Bd7 11.Nbc3 Nh6 12.Nd4+=; 9.ba6 Na6 10.Nbc3 c6 11.Qb3 Nh6 12.a4+=) 9...Nh6 10.Nbc3 ab5 11.Nb5 Nf5 12.Rc1+=; B3) 8...Nh6 9.0-0 (9.Qc2 f5 10.Nbc3 a6 11.Qa4 Bd7 12.Rc1+=; 9.Nec3 Bg4 10.Qa4 Bd7 11.Ba3 Nf5 12.Nd5+=; 9.Nbc3 Be6 10.d5 Bf5 11.Nd4 Be5 12.Rc1+=; 9.Nd2 Be6 10.d5 Bf5 11.Nd4 Nd7 12.Qc2+=) 9...Nd7 10.Nec3 Nb6 11.Bb3 Ng4 12.h3+=; B4) 8...Bg4 9.Qc2 (9.Nbc3 f5 10.Qb3 Nf6 11.Be6 Nbd7 12.h3+=) 9...c6 10.Ng3 Bg3 11.hg3 f5 12.Bg8+/–; B5) 8...Nd7 9.Nbc3 (9.Qc2 Nb6 10.Bb3 f5 11.0-0 Nf6 12.a4=; 9.0-0 Nb6 10.Bb3 Be6 11.Ba3 Rc8 12.Bd6+=; 9.Nd2 Nb6 10.Bb3 Bg4 11.a4 a5 12.h3+=; 9.Qb3 Nh6 10.Nbc3 Nb6 11.Nd5 Nd5 12.Bd5+=) 9...Nb6 10.Bb3 f5 11.a4 a6 12.a5+=; C) 8.Nd2 C1) 8...Nd7 9.Bg8 Rg8 10.Qh5 Kd8 11.Qh7 Re8 12.Ne2+=; C2) 8...Be6 9.Rc1 (9.Qc2 f5 10.d5 Bd7 11.Ne2 a6 12.Qa4=; 9.Qb3 Bc4 10.Qc4 Bb4 11.Bc3 Bc3 12.Qc3+=; 9.d5 Bd7 10.Ne2 a6 11.Nd4 Nh6 12.Qb3+=; 9.Ne2 Bc4 10.Nc4 Bb4 11.Bc3 Nd7 12.Rc1+=) 9...Bc4 10.Nc4 Nd7 11.Qh5 g6 12.Qd5+=; C3) 8...f5 9.Nh3 (9.Ne2 Nf6 10.0-0 Bh2 11.Kh2 Ng4 12.Kg3=; 9.Qh5 g6 10.Qe2 a6 11.ba6 Na6 12.Nh3=; 9.Qb3 Nf6 10.Nh3 Nbd7 11.Ng5 Rf8 12.Ne6=; 9.Rc1 Nf6 10.Ne2 Nbd7 11.Bb3 Nb6 12.Nc4=) 9...Nf6 10.Ng5 Rf8 11.Qb3 Nbd7 12.Ne6=; D) 8.Qb3 Nh6 9.Nc3 (9.Ne2 Nd7 10.Nbc3 Nb6 11.Nd5 Nd5 12.Bd5+=) 9...Nd7 10.Nd5 Qd8 11.Rc1 c6 12.Nc3+=; E) 8.Qh5 E1) 8...Kd8 9.Nc3 (9.Bg8 Rg8 10.Qh7 Re8 11.Nc3 a6 12.Nge2+=; 9.Ne2 f5 10.Nec3 Nf6 11.Qe2 Nbd7 12.Nd2–/+; 9.Nd2 f5 10.Nh3 Nf6 11.Qh4 a6 12.ba6=; 9.a3 f5 10.Nh3 a6 11.Ng5 Nh6 12.ba6+=) 9...Be6 10.Be6 Qe6 11.Nge2 Ne7 12.d5+=; E2) 8...g6 9.Qh4 (9.Qd1 Nd7 10.Nc3 Nb6 11.Bb3 a6 12.Qc2=; 9.Qe2 Nd7 10.Nc3 Nb6 11.Bb3 Bf5 12.a4=) 9...a6 10.Nc3 f5 11.Qe7 Ne7 12.Nge2+=; F) 8.a3 F1) 8...Nh6 9.Nd2 (9.Qc2 f5 10.Ne2 Nd7 11.Nbc3 Qg5 12.Ng3=; 9.Nc3 Be6 10.Be6 Qe6 11.d5 Qe7 12.Qh5=; 9.Ne2 Be6 10.Nd2 Bc4 11.Nc4 Nf7 12.Nc3+=; 9.Qh5 Nf7 10.Nc3 0-0 11.Bd5 f5 12.Nh3+=) 9...Be6 10.Qh5 Kd8 11.Be6 Qe6 12.Ne2+=; F2) 8...Be6 9.d5 (9.Nd2 Bc4 10.Nc4 f5 11.Nd6 Qd6 12.Rc1=; 9.Be6 Qe6 10.Qh5 g6 11.Qh4 Qe7 12.d5=) 9...Bf5 10.Ne2 Nh6 11.Nd4 Nd7 12.Nc3+=; F3) 8...Nd7 9.Bb3 (9.Qb3 Nh6 10.Nc3 Nb6 11.Nd5 Nd5 12.Bd5=; 9.Nc3 f5 10.Nh3 Nb6 11.Bb3 Nf6 12.a4=) 9...f5 10.Nh3 Nh6 11.Qh5 Kd8 12.Nc3=; G) 8.Nh3 G1) 8...g6 9.Nf4 (9.Ng1 Nd7 10.Nc3 Nb6 11.Bb3 Bf5 12.Nge2+=) 9...Bf4 10.Qb3 Bd6 11.Bg8 a5 12.Bd5+=; G2) 8...h5 9.Bg8 (9.Ng1 Be6 10.Be6 Qe6 11.Nc3 Nd7 12.Nh3=; 9.Nf4 Bf4 10.Qb3 Bd6 11.Bg8 h4 12.Nc3+=; 9.Nc3 Bh3 10.gh3 f5 11.Qb3 Nh6 12.Rg1=) 9...Rg8 10.Qh5 g6 11.Qd5 Rg7 12.Nc3+=; G3) 8...a6 9.Nc3 (9.0-0 ab5 10.Qh5 Kd8 11.Qb5 g5 12.Nd2=; 9.Nd2 ab5 10.Bb5 c6 11.Bc4 Nh6 12.Qh5=; 9.ba6 Na6 10.0-0 c6 11.Qh5 g6 12.Qh4=) 9...ab5 10.Nb5 Bb4 11.Nc3 Be6 12.Be6=; H) 8.Nc3 H1) 8...Bf5 9.Qb1 (9.Qb3 Nh6 10.Nge2 Nd7 11.0-0 Nb6 12.Nd5+=; 9.Nge2 Nd7 10.Nd5 Qd8 11.Qc2 Ne7 12.0-0+=) 9...Bb4 10.Nge2 a6 11.Ng3 Bg6 12.0-0+/–; H2) 8...c6 9.d5 (9.Rc1 a6 10.bc6 Nc6 11.Nge2 Bg4 12.h3+=; 9.Qh5 g6 10.Qe2 Nh6 11.Qc2 Bf5 12.Rc1+=; 9.Nge2 a6 10.bc6 Nc6 11.Rc1 Bg4 12.h3+=; 9.Qc2 f5 10.d5 Nf6 11.Rc1 c5 12.Nge2=) 9...cb5 10.Nb5 Nd7 11.Nd6 Qd6 12.Qa4+=; H3) 8...Be6 9.Qa4 (9.Be6 Qe6 10.d5 Qe5 11.Qa4 f5 12.b6+=; 9.Qb3 Bc4 10.Qc4 Bb4 11.Nge2 c6 12.bc6+/–; 9.d5 Bf5 10.Nge2 Be5 11.Nd4 Qb4 12.Qe2+=) 9...Bc4 10.Qc4 Bb4 11.Nge2 c6 12.bc6+/–; H4) 8...f5 9.Nh3 (9.Nge2 Nf6 10.0-0 Be6 11.d5 Bh2 12.Kh1–/+; 9.Rc1 Qg5 10.g3 Nf6 11.Nh3 Qh6 12.Nf4+=; 9.Qh5 g6 10.Qe2 Nd7 11.Nd5 Qg5 12.f4=) 9...Nf6 10.Ng5 Rf8 11.Qb3 Ng4 12.h4+=.

7.Bc4 Ne7 A) 8.Qh5 g6 9.Qh4 f5 10.Nh3 c6 11.Nc3 a6 12.Ng5=; B) 8.Nc3 B1) 8...Bf5 9.Qc2 c6 10.Nge2 cb5 11.Bb5 Nd7 12.Ne4+/–; B2) 8...Bb4 9.Nge2 Bg4 10.Qc2 Be2 11.Qe2 f5 12.a3+/–; B3) 8...f5 9.Nh3 (9.Qh5 g6 10.Qh6 Ng8 11.Bg8 Rg8 12.Qh7+=; 9.Rc1 Nd7 10.Qh5 g6 11.Qh6 Ng8 12.Qg7+=; 9.Qb3 a6 10.Bf7 Kf8 11.Rc1 Nd7 12.Nge2+=; 9.Nge2 Nd7 10.0-0 Nb6 11.Bb3 a6 12.a4+=) 9...Ng6 10.Qb3 c6 11.Bf7 Kf8 12.Bg6+=; C) 8.Nd2 C1) 8...Bf5 9.Ne2 (9.Qc2 Bb4 10.Ne2 Bd2 11.Qd2 a6 12.ba6+=) 9...Qd7 10.Nc3 Bb4 11.Qb3 Bc3 12.Bf7+/–; C2) 8...f5 9.Qh5 Ng6 10.g4 fg4 11.Ne4 a6 12.Bd3+=; C3) 8...Bb4 9.Qc2 (9.a3 Bd2 10.Qd2 Nd7 11.Ne2 Nb6 12.Bb3+=; 9.Qh5 g6 10.Qh4 Bd2 11.Kd2 Qd6 12.a3+=; 9.Ne2 Nd5 10.0-0 Be6 11.a3 Bd2 12.Qd2+=) 9...Bd2 10.Qd2 c6 11.bc6 bc6 12.Rc1+=.

7.Bc4 f5 A) 8.Bg8 Qg5 9.Ne2 Rg8 10.0-0 Qh6 11.h3 g5 12.Ba3=; B) 8.Nh3 B1) 8...c6 9.Nc3 (9.Bg8 Rg8 10.Qh5 Ke7 11.Ng5 Qf8 12.Nh7+=) 9...Nf6 10.Qb3 Qe7 11.Ng5 Nd5 12.bc6+/–; B2) 8...a6 9.Nc3 (9.Qa4 Bd7 10.Ba3 c6 11.b6 Ba3 12.Na3+=; 9.Qb3 Nh6 10.ba6 Na6 11.Ba3 c6 12.Bd6=; 9.ba6 Na6 10.Qb3 Nh6 11.Ba3 c6 12.Bd6=; 9.Nf4 Bf4 10.ef4 ab5 11.Bb5 c6 12.d5=) 9...Nf6 10.Ng5 ab5 11.Nb5 Bb4 12.Bc3+=; B3) 8...Nd7 9.Ba3 (9.0-0 Qe7 10.Qh5 g6 11.Qg5 Ngf6 12.Nc3+=; 9.Nd2 Nb6 10.Bg8 Rg8 11.Qh5 g6 12.Qh7=; 9.Nc3 Nb6 10.Bg8 Rg8 11.Qh5 g6 12.Qh7=) 9...Qe7 10.Bd6 cd6 11.Nc3 Ngf6 12.Nf4+=; B4) 8...Bd7 9.Ba3 (9.Bg8 Rg8 10.Qh5 g6 11.Qh7 Be6 12.Ba3+=) 9...Nf6 10.Ng5 Qe7 11.Qb3 Rf8 12.Bd6+/–; B5) 8...Qf6 9.Qc2 (9.Nc3 Qg6 10.g3 Nd7 11.Nd5 Qh6 12.Nhf4=; 9.Bc3 Qg6 10.0-0 f4 11.Nf4 Bf4 12.ef4+=; 9.Qh5 g6 10.Qe2 Nd7 11.Ba3 Nb6 12.Bd6+=; 9.Qb3 Ne7 10.0-0 Nd7 11.Ba3 Nb6 12.Bd6=) 9...Nd7 10.0-0 Nb6 11.Bb3 a6 12.Nc3+=; C) 8.Qh5 g6 9.Qd1 (9.Qe2 a6 10.ba6 Na6 11.Nh3 Nf6 12.Ba3=; 9.Qh3 Nf6 10.Ne2 Nbd7 11.Nbc3 Nb6 12.Bb3=) 9...Qg5 10.g3 Nd7 11.Qb3 Nh6 12.Nd2=; D) 8.Qb3 D1) 8...Nf6 9.Nh3 (9.Bf7 Kf8 10.Ba3 a6 11.ba6 Na6 12.Bd6=; 9.Ne2 Rf8 10.Ba3 Ba3 11.Na3 a6 12.ba6+=; 9.Ba3 a6 10.Ne2 ab5 11.Bb5 c6 12.Bd6=) 9...c6 10.Nc3 Qe7 11.Ng5 Nd5 12.bc6+/–; D2) 8...Nh6 9.Nh3 (9.Ne2 a6 10.ba6 b6 11.Bb5 Bd7 12.Nbc3=; 9.Nd2 Qg5 10.g3 Qe7 11.Ne2 Nd7 12.Nf4=; 9.Ba3 Qg5 10.Bf1 Qg6 11.Bd6 Qd6 12.Bc4=; 9.Be6 Nd7 10.Ne2 Qg5 11.Ng3 Qg6 12.Nd2=) 9...Nd7 10.Ba3 Nb6 11.Bd6 cd6 12.0-0+=; D3) 8...Qg5 9.g3 (9.Ne2 Nf6 10.Ng3 f4 11.ef4 Bf4 12.0-0=; 9.Bf7 Kd8 10.g3 Nh6 11.Bd5 c6 12.bc6=) 9...Nh6 10.Ba3 Nd7 11.Nc3 Ba3 12.Qa3=; E) 8.Ne2 E1) 8...Nf6 9.Ba3 (9.Qb3 a6 10.Ba3 ab5 11.Bb5 c6 12.Bd6=; 9.0-0; 9.Nbc3; 9.Nd2) 9...c6 10.Qb3 a6 11.Bd6 Qd6 12.b6+=; E2) 8...c6 9.Qa4 (9.Nbc3 a6 10.a4 Nf6 11.Qb3 ab5 12.ab5+=; 9.d5 Nf6 10.dc6 bc6 11.0-0 Ng4 12.Nf4+=; 9.Nf4 Nf6 10.Qb3 Bf4 11.ef4 Nd5 12.bc6+=; 9.Qb3 Nf6 10.0-0 Qc7 11.Ng3 h5 12.Rd1+=) 9...Bd7 10.Nbc3 Nf6 11.Qb3 Qa5 12.0-0+=; E3) 8...Qh4 9.Ba3 Nh6 10.Bd6 cd6 11.Nbc3 Ng4 12.Ng3+/–; E4) 8...Qg5 9.Ng3 (9.0-0 Qh6 10.h3 Nf6 11.Ba3 g5 12.Bd6+=; 9.Qb3 Nf6 10.Ng3 f4 11.ef4 Bf4 12.0-0=) 9...Nf6 10.Ba3 f4 11.Bd6 cd6 12.ef4+=; E5) 8...a6 9.Nbc3 (9.Qa4 Nf6 10.Nbc3 Nfd7 11.Qb3 Nb6 12.Bf7=; 9.Qb3 Nh6 10.ba6 Na6 11.Ba3 c6 12.Bd6=; 9.ba6 Na6 10.Qb3 Nf6 11.Ba3 Qe7 12.Bd6+=; 9.Nf4 Bf4 10.ef4 ab5 11.Bb5 c6 12.d5=) 9...c6 10.a4 Nf6 11.Qb3 ab5 12.ab5+=.

7.Bc4 Bf5 8.Nd2 A) 8...Qd7 9.Ne2 Ne7 10.Nc3 Bb4 11.Qb3 Bc3 12.Bf7+/–; B) 8...Ne7 9.Ne2 (9.Qc2 Bb4 10.Ne2 Bd2 11.Qd2 a6 12.0-0+=) 9...Qd7 10.Nc3 Bb4 11.Qb3 Bc3 12.Bf7+/–; C) 8...c6 9.Ne2 (9.Qc2 Qe7 10.Rd1 Nh6 11.Ne2 a6 12.bc6+=; 9.Qb3 Ne7 10.Ne2 Bg6 11.Ng3 f5 12.Be6+=) 9...Nh6 10.Qc2 Qe7 11.Nc3 Bb4 12.0-0+/–; D) 8...Qe7 9.Ne2 (9.Rc1 c6 10.Ne2 a6 11.bc6 Nc6 12.Ng3+=) 9...Be6 10.d5 Bd7 11.Ng3 f5 12.Nh5+/–.

7.Bc4 c6

8.a4 Ne7 (8...cb5 9.Qh5 g6 10.Qb5 Nc6 11.Bd5 Bd7 12.Qb3+=; 8...Bf5 9.Nd2 (9.Ba3 Ba3 10.Ra3 Ne7 11.Qb3 Qd7 12.Bf7+=; 9.Qb3 Nh6 10.Nc3 Nd7 11.Ba3 Ba3 12.Ra3+=; 9.Nc3 Nh6 10.Ba3 Ba3 11.Ra3 Qe7 12.Rb3+=; 9.Ne2 Ne7 10.Ba3 Qa5 11.Nec3 Ba3 12.Ra3+=) 9...Nh6 10.Ba3 Ba3 11.Ra3 Qe7 12.Rc3+=) 9.Qb3 (9.Nd2 Bf5 10.Ba3 Nc8 11.Qb3 Qd7 12.f3+=; 9.Qh5 Ng6 10.Ne2 a6 11.Nbc3 ab5 12.ab5+=; 9.Ba3 Ba3 10.Ra3 Nf5 11.Nd2 Nd6 12.Rc3=; 9.Nc3 Bf5 10.Qb3 Qd7 11.f3 ef3 12.Nf3+=; 9.Qc2 f5 10.Qb3 Nd5 11.bc6 bc6 12.Nc3=) 9...Nd5 (9...Qd7 10.f3 ef3 11.Nf3 a6 12.0-0+=) 10.Nc3 (10.Bd5 cd5 11.Nc3 Qe7 12.Nd5+=) 10...Bb4 (10...Nc3 11.Bc3 a6 (11...cb5 12.Bf7 Kf8 13.ab5+=) 12.Bf7+=) 11.Nge2 (11.bc6 bc6 12.Nge2+=) 11...Be6 12.0-0 Bc3 13.Nc3 0-0? (13...Nd7!?+-) 14.Ne4 (14.bc6 bc6 15.Qb7 Rf7 16.Qa8 Nc7 17.Qa7 Bc4+-) 14...f5 (14...Qc8 15.bc6 bc6 16.Ba3+-) 15.Nc5 Qc8 16.Ne6 (16.bc6!? bc6 17.Ba3 Re8+-) 16...Qe6 17.Bd5 (17.a5 Rd8+-) 17...Qd5 (17...cd5 18.Rac1+/–) 18.Qd5 cd5 19.Rfc1 Nd7 20.Rc7 Nb6 21.Ba3 (21.Rb7!? Rf7 22.Rf7 Kf7+-) 21...Rf7+/– 22.Rf7 (22.Rc5 Rd7 23.a5 Nc4+/–) 22...Kf7 23.Bc5 Nc4 24.Kf1 Ke6 25.Ke2 b6 26.Bb4 a5 27.Bc3 Rc8 28.Kd3 g5 29.h3 h5 30.Re1 Kf6 31.f3 Re8 (better is 31...Nd6!?+=) 32.e4+/– g4 (32...f4 33.Re2+/–) 33.e5 (33.ed5!? Nb2 34.Kc2 Re1 35.Be1 Nc4+-) 33...Kg5 34.hg4 hg4 35.Ke2 (35.Bd2 Kg6+-) 35...Re7 (35...f4 36.fg4 Kg4 37.Rh1+/–) 36.g3 (better is 36.Bd2!? f4 37.fg4 Kg4 38.Bc1+-) 36...Rh7+= 37.f4 Kg6 ½–½. Jahn,G – Spiegel,Michael, corr DDR–Cup, 1980.

8.Qb3 Nh6 (8...Ne7) 9.Nc3 (9.Nd2 f5 10.d5 Qg5 11.bc6 bc6 12.Bf1+=; 9.bc6 Nc6 10.Nd2 f5 11.Ba3 Ba3 12.Qa3=; 9.Bc3 f5 10.Nd2 Qg5 11.g3 a6 12.bc6=) 9...f5 10.Ba3 Ba3 11.Qa3 Nf7 12.bc6+=.

8.Nc3 A) 8...Bf5 9.Qc2 (9.Qb3 Nh6 10.bc6 bc6 11.Ba3 Ba3 12.Qa3+/–; 9.Nge2 Nh6 10.Qb3 Nd7 11.bc6 bc6 12.Qa4+=; 9.Rc1 Ne7 10.Qb3 a6 11.ba6 Na6 12.f3+=; 9.Qa4 Qb6 10.f3 ef3 11.Nf3 Ne7 12.0-0+=) 9...Qe7 10.Nf3 ef3 11.Qf5 fg2 12.Rg1+/–; B) 8...f5 9.Qa4 (9.Nge2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1+=; 9.Qb3 Nh6 10.Ba3 Ba3 11.Qa3 Qg5 12.bc6+=) 9...Bd7 10.Qb3 Nf6 11.Nge2 Qa5 12.0-0+=.

8.Nd2 A) 8...Bf5 9.Qc2 (9.Qb3 Ne7 10.Ne2 Bg6 11.Nc3 f5 12.Be6+=; 9.Ne2 Qe7 10.Nc3 a6 11.bc6 Nc6 12.Qa4+/–; 9.Rc1 Ne7 10.f3 Bb4 11.Kf2 Bd2 12.Qd2=; 9.Bg8 Rg8 10.Qb3 Rf8 11.Ne2 Qd7 12.Nc3+=) 9...Qe7 10.a3 Nh6 11.Ne2 Nf7 12.Nc3+/–; B) 8...f5 9.Bg8 (9.Qh5 g6 10.Qe2 Nf6 11.Nh3 a6 12.ba6=; 9.Qb3 Nh6 10.Ba3 Ba3 11.Qa3 Qg5 12.g3+=; 9.Qa4 Bd7 10.Qb3 Nf6 11.Bf7 Kf8 12.Nc4+=; 9.bc6 Nc6 10.Nh3 Nf6 11.Ng5 Qd7 12.Nf7+=) 9...Qg5 10.Ngf3 ef3 11.Nf3 Qg6 12.Bc4+/–; C) 8...Bb4 9.a3 (9.Rc1 Ne7 10.Bc3 Bc3 11.Rc3 Nd5 12.Rc1+=; 9.Ne2 cb5 10.Bb5 Bd7 11.Bc4 b5 12.Bg8+=; 9.bc6 Nc6 10.a3 Bd2 11.Qd2 Rb8 12.Qc2+=; 9.Qc2 Qe7 10.Rd1 Bd7 11.Bc3 Bc3 12.Qc3+=) 9...Bd2 10.Qd2 Ne7 11.bc6 Nbc6 12.d5+/–; D) 8...Qe7 9.Rc1 (9.Qa4 Bd7 10.d5 cb5 11.Bb5 Bb5 12.Qb5+=; 9.Rb1 f5 10.Qa4 Qg5 11.Bf1 Qe7 12.bc6+=; 9.Qc2 f5 10.Rc1 Nf6 11.Qb3 a6 12.bc6+=; 9.Qb3 Nh6 10.Ne2 a6 11.bc6 Nc6 12.Rc1+=) 9...Bd7 10.Ne2 a6 11.Qb3 Nh6 12.bc6+=.

8.Bg8 Rg8 9.Qh5 Ke7 10.Qh7 f5 11.d5 Bb4 12.Bc3+/–.

8.Qh5 g6 9.Qh4 (9.Qe2 cb5 10.Bb5 Bd7 11.Nc3 f5 12.Rd1=) 9...Qe7 10.Nc3 Bf5 11.Nge2 h5 12.Ng3+=.

6.c4 c6

7.a4 Ne7 8.f3 (8.Ba3 Ba3 9.Ra3 Be6=) 8...f5 (8...ef3 9.Nf3 Nf5 10.Kf2+=) 9.f4 0-0 10.Nh3 Qe8 11.Be2 Nd7 (11...Qg6 12.0-0=) 12.Bh5 g6 13.Be2 Nf6 14.0-0 (14.c5 Bc7+=) 14...Be6 (14...dc4 15.Ba3 Ba3 16.Bc4 Ned5 17.Na3=) 15.c5+= Bc7 16.Qe1 h6 17.Qh4 Kg7 18.Nd2 Qf7 19.Rf2 (better is 19.Bc3!?+=) 19...Ng4+= 20.Bg4? (better is 20.Ne4 Nf2 21.Nef2=) 20...fg4–+ 21.f5 (21.Ng5 hg5 22.Qg5 Rh8–+) 21...Bf5 (21...gh3 22.f6 Kg8 23.fe7 Qf2 24.Qf2 Bh2 25.Kf1 hg2 26.Kg2 Bh3 27.Kh2 Rf2 28.Kh3 Rd2 29.Bc3–+; 21...Nf5?! 22.Qg4 cb5 23.Qe2=) 22.Nf4? (22.Raf1 b6–+) 22...Bf4 (better is 22...g5 23.Qg3 gf4 24.ef4 Bd7–+) 23.ef4 Rae8 (23...cb5 24.Nb3–+) 24.Re2 (24.Qg3 Bd7 25.Nf1 Nf5–/+) 24...Ng8 (24...Bd7 25.bc6 bc6 26.g3–+) 25.b6 (25.Qg3 Bc8 26.Rf1 Nf6–/+) 25...a6 (25...ab6 26.cb6 e3 27.Nf1–+) 26.Nf1 Bc8 27.Bc1? (27.Rf2 Ne7–/+) 27...h5 (better is 27...g5!? 28.Qe1 gf4–+) 28.Be3 Nh6 29.Ng3 Bf5 (29...Qe7 30.Qe7 Re7 31.Rae1–/+) 30.Qg5 Re6 (better is 30...Kh7–/+) 31.Nh5+= Kh7 32.Ng3 Rh8 33.h3 (better is 33.Rae1!?+/–) 33...gh3+= 34.gh3 Qg7 (34...Bh3? 35.Rh2 Nf5 36.Rh3 Kg7 37.Rh8 Kh8 38.Kf2+-) 35.Nf5 Nf5 36.Kf2? (better is 36.Rd1+=) 36...Nd4–+ 37.Rd2?? (37.Qh4 Kg8 38.Qg4–+) 37...Nf3 38.Qg3 (38.Bd4 Ng5 39.Bg7 e3 40.Kg2 ed2 41.Bh8–+) 38...Qa1 (38...Qa1 39.Kg2 Nd2 40.Bd2 d4–+) 0–1. Anderson,George – Liebzeit,Mick, Winnipeg Gr–D GP final, 2004.

7.c5 Bc7 8.a4 Ne7 9.Ne2 0-0 10.Nbc3 Be6 11.Nf4 Bf7 12.Be2 Nd7 13.h4 f5 14.h5 Nf6 15.h6 g5 16.Nh5 Nh5 17.Bh5 Qe8 18.f4? g4 19.Bg4 fg4–/+ 20.Qg4 Bg6 21.0-0-0 Qf7 22.Rdf1 Qf5 23.Qh4 Qf6 24.Qg4 Nf5 25.Kd2 Ne3 26.Ke3 Bf4?? 27.Rf4+- Qf4 28.Qf4 Rf4 29.Kf4 Rf8 30.Ke3 Rf5 31.Ne2 Rg5 32.Nf4 Rg3 33.Kf2 Rb3 34.Ng6 Rb2= 35.Kg3 hg6 36.h7 Kh8 37.Kf4 Rg2–/+ 38.bc6 bc6 39.Ke5 e3 40.Kd6 e2 41.Kc6+- Rf2 42.Re1 Kh7 43.Kd5 g5 44.c6 g4 45.c7 Rf8 46.Re2 Kg6 47.Rc2 Rc8 48.Kc6 Kf5 49.d5 g3 50.d6 Kf4 51.d7 (51.d7 Rh8 52.d8Q Rh6 53.Kc5 g2 54.Qd4 Kg3 55.Qe5 Kf3 56.Rc3 Kf2 57.Qe3 Kf1 58.Rc1) 1–0. iczker – ovid44, internet, 2011.

7.bc6 bc6 8.cd5 Bb4 9.Nd2 (better 9.Bc3!? Be7 10.Bc4+/-) 9...Bd2+= 10.Kd2 (10.Qd2 cd5 11.Ne2 Nc6+=) 10...cd5= 11.Bc3 Ne7 12.Qa4 (12.Qh5 g6 13.Qd1 Nbc6=) 12...Bd7 (12...Nbc6 13.Bb5 Bd7 14.Rb1=+) 13.Bb5 (13.Qa5 Qc8=) 13...0-0 (13...Bb5 14.Qb5 Nbc6 15.Qa4-/+) 14.Ne2 Bb5 15.Qb5 Nbc6 16.Rhb1 Qd6 17.g3 (17.Ng3 Rab8 18.Qc5 Qd7=+) 17...Rfb8 18.Qa4 Qe6 (18...Nc8 19.Ba5-/+) 19.Nf4=+ Qf5 (19...Qd7 20.Bb4 Nf5 21.Bc5=+) 20.h3 g5 21.g4 Qd7 22.Nh5 Kf7 (22...Qe6 23.Ng3=+) 23.a3 (23.f4 ef3 24.Rf1 Ne5 25.Qd7 Nd7 26.Rf3 Rb6=) 23...Qd6 (23...Nc8 24.Ke1=+) 24.Bb4 (24.Ng3!?=) 24...Qh2-/+ 25.Be7?? (better 25.Ke1-/+) 25...Qf2-+ (25...Ne7?! 26.Qa6 Qf2 27.Qe2 Qe2 28.Ke2-+) 26.Kd1 Qf1 (26...Ne7?! 27.Qa6-+) 27.Kc2 Qe2 28.Kc1 Qe3 (28...Ke7 29.Qc6 Qe3 30.Kd1 Qd4 31.Ke1 Qe3 32.Kf1 Qh3 33.Ke1 Qe3 34.Kf1 Qf3 35.Ke1 Rb1 36.Rb1 Qh1 37.Kf2 Qh2 38.Kf1 Qh3 39.Ke1 Qe3 40.Kf1 Qd3 41.Kf2 e3 42.Kg2 Qe4 43.Kg3 Qb1 44.Qc7 Ke8 45.Ng7 Kf8 46.Ne6 Ke8 47.Ng7 Kf8 48.Ne6 Ke8 49.Ng7=) 29.Kc2 Nd4 (29...Ke7?! 30.Qc6 Qe2 31.Kc1 Qf1 32.Kd2 Qd3 33.Kc1-/+) 30.Qd4 Qd4 31.Bf6 (31.Rb3 Rb3 32.Kb3 Qc4 33.Kb2 Ke7 34.Rb1 Rb8 35.Ka1 Qc3 36.Ka2 Qc2 37.Rb2 Qb2) 31...Qd3 (31...Rc8 32.Kb3 Qc4 33.Kb2 Rab8) 32.Kc1 Rc8 33.Kb2 (33.Bc3 Rc3 34.Kb2 Rc2) 33...Rab8 (33...Qc2) 34.Ka2 Rc2 (34...Qc4 35.Rb3 Qb3) 35.Rb2 Qb3 (35...Qc4 36.Kb1 Rc1) 36.Kb1 Rb2 (36...Rb2 37.Bb2 Qb2) 0-1. zembelek1 (2165) - tardigardi (2150), Rated Classical tournament, lichess.org, 2016.

7.bc6 bc6 8.cd5 cd5 9.Bb5 Kf8 +=.

7.cd5 cd5 8.Nc3 Ne7 9.Nge2 Bg4 10.h3 Bh5 11.Qb3 Bf7 12.g4 Nd7 13.Bg2 Nb6 14.0-0 0-0 15.Rfc1 f5 16.Nf4 Bf4 17.ef4 Qd6 18.Ne2 Ng6?? 19.Ba3+/– Qd7 20.Bf8 Kf8 21.Qb4 Ke8 22.Rc5 Kd8 23.Rac1+/– Nc4 24.Nc3?? b6 25.Rc6 Ne7 26.Rc4 dc4 27.Rd1 g6 28.d5+= Rc8 29.Rd4 Nd5 30.Bf1?? Nb4–+ (30...Nb4 31.Rd7 Kd7–+) 0–1. gtate (1970) – leen (2085), net–chess.com, 2005.

6.Nd2 f5

7.a4 Nf6 8.Ba3 Ba3 9.Ra3 a6 10.Nh3 ab5+=.

7.Rc1 a6 (7...Nf6 8.c4 0-0 9.c5 Be7 10.Ne2 Ng4=) 8.c4 ab5 9.cd5 b4 10.Nc4 Ra2+=.

7.c4 c6 8.g3 Ne7 (8...Nf6 9.Qb3=) 9.a4 (9.Nh3 0-0=) 9...0-0 (9...Bb4 10.Nh3=) 10.Qb3 Nd7 (10...Be6 11.Nh3=) 11.Ne2 (11.Nh3 a6=) 11...Nf6 12.Nc3 Be6 (12...Bd7 13.Be2=) 13.Ba3 (13.c5 Bc7=) 13...Ba3 (13...b6 14.Be2=) 14.Qa3 dc4 (14...Rc8 15.c5=) 15.Nc4 (15.Bc4 Ned5=) 15...Nfd5 (15...Rc8 16.Rc1=) 16.Be2 Rc8 17.0-0 Nc3 18.Qc3 Nd5 (18...c5 19.Rfd1 Nd5 20.Qa3=) 19.Qd2 (19.Qa3 cb5 20.ab5 f4=) 19...Qe7 (19...c5 20.Rfc1=) 20.bc6 Rc6 (20...bc6 21.Ne5=) 21.Ne5+= Rc7 22.Rfc1 Rfc8 23.Rc7 Rc7 24.a5 (24.Bc4 Qd6+=) 24...Nc3 (24...Qb4 25.Qb4 Nb4 26.Rb1=) 25.Qb2 (25.Bc4 Bc4 26.Qc3 Be6+=) 25...Ne2 26.Qe2 Qb4 27.Qh5 Rc8 (27...Qe7 28.Qd1+=) 28.Kg2 (28.Qd1 Qb3=) 28...Qb2 29.Rd1 (29.Rg1=) 29...b5 (29...Qb5!?=) 30.ab6+- ab6 31.Qg5 Re8 32.h4 Qc2 (32...b5 33.h5 h6 34.Qg6+-) 33.Ra1 (33.h5 h6 (33...Qd1 34.h6 Qf3 35.Nf3 ef3 36.Kg1 Re7 37.Qe7 gh6 38.Qe6 Kg7 39.d5 f4 40.d6 fe3 41.d7 e2 42.d8Q e1Q 43.Qe1 b5 44.Qe6 b4 45.Qdf6) 34.Qg6 Re7+-) 33...Qc7 34.h5 Qd8 35.Qd8 Rd8 36.Ra6 h6 (better 36...Rb8!?+-) 37.Rb6+- Bf7 38.Ng6 Bc4 (38...Be8 39.Rb7+-) 39.Ne7 Kf7 (39...Kf8 40.Nf5 Be2 41.Nd6+-) 40.Nf5 (40.Nf5 Be2 41.Nd6 Kf8 42.Ne4 Bh5 43.f3+-) 1–0. Gorbylyov – Avlasenko, BLR–ch disabled corr, 2000.

7.c4 Nf6 8.c5 Be7 9.Nh3 b6 10.Rc1 0-0=.

7.Ne2 Nf6 8.c4 c6 9.a4 (9.Qb3 0-0+=) 9...Be6 10.Nc3 0-0 11.Qb3 (11.Be2 Nbd7=) 11...Nbd7 (11...f4=) 12.a5 (12.Be2 Qe7=) 12...a6 (12...f4 13.c5 fe3 14.fe3–/+) 13.b6 (13.c5 Be7 14.b6 Qe8+=) 13...Rc8 (13...f4!? 14.cd5 Nd5+=) 14.Ba3 White prepares c5 14...Qe7 (14...Ba3 15.Ra3 Bf7 16.Ra4+=) 15.g3 (15.Bd6 Qd6 16.c5 Qe7=) 15...Kh8 (15...Ba3!? 16.Ra3 c5 17.cd5 cd4 18.ed4 Nd5 19.Nd5 Qd6–/+) 16.Bd6= Qd6 17.c5 Qe7 18.Ne2 Nh5 19.h4 (19.Nc3 Rf6=) 19...Ndf6 20.Nb1 Ng4 21.Na3 Nhf6 (21...Rf6 22.Bg2+=) 22.Nc2 Nd7 (22...Kg8 23.Nf4+=) 23.Nf4= Bf7 24.Ra2 g5 (better is 24...Ndf6=) 25.hg5+/– Qg5 26.Nb4 Ndf6? (26...Qf6 27.Na6 ba6 28.Ba6+/–) 27.Qc3?? (better is 27.Ba6 ba6 28.b7+-) 27...Nh5 (27...Ra8 28.Ba6 Ra6 29.Na6 ba6 30.Qc2+-) 28.Na6 ba6 29.Ba6 Rb8 (29...Rce8 30.Nh5 Bh5 31.Bb7 Nf2 32.Rf2 Qg3 33.Rh5–/+) 30.Be2 Nf4 31.ef4 Rfe8?? (better is 31...Qe7+-) 32.fg5 1–0. Lunin,Mikhail (2130) – Chalov,Vasily, Ramenskoe, 2010.

7.Nh3 Nf6 (7...Nd7 8.c4 Ngf6 9.c5 Be7 10.Be2 Nf8=; 7...a6 8.c4 Nf6 9.Qb3 ab5 10.c5 Be7=; 7...c6 8.c4 Nf6 9.c5 Bc7 10.Qa4 Ba5=; 7...Qh4 8.c4 Nf6 9.Qb3 Be6 10.cd5 Bf7+=) 8.c4 0-0 9.c5 Be7 10.Be2 b6=.

7.Qh5 g6 8.Qe2 a6 9.c4 Bd7 10.ba6 Na6=.

5.e3 Bd7??

6.a4?? a6?? 7.c4?? c6 8.c5 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Bc3 Qa2 12.b6 Na6 13.Ba6 Qa6 14.Qe2 Qe2 15.Ne2 Nh6 16.0-0 Be7 17.Nd2 Kf7 18.Ra1 Rb8 19.Ng3 Nf5 20.Nf5 Bf5 21.Nf1 Bd7 22.Ng3 g5 23.Nh5 Kg6 24.Ng3 h5 25.h3 f5 26.f4 gf4 27.ef4 Bh4 28.Be1 Bf6 29.Ne2 Rg8 30.g3 Bc8 31.Ra8 Kf7 32.Kf2 h4 33.Ke3 hg3 34.Bg3 Ke7 35.Kf2 Kd7 36.Nc1?? Bd4–+ 37.Kg2 Bc5 38.Nb3 Bb6 39.Ra1 Bc7 40.Nc5 Kd6 41.Rc1 b6 42.Nb3 c5 43.Kh2 d4 44.Be1 Be6 45.Nd2 Kd5 46.Nf1 Bf4 47.Kh1 Bc1 48.Nh2 Bf4 49.Nf1 Be5 50.Nd2 Kd6 51.Nb3 Bb3 52.h4 Bd5 53.Bg3 f4 54.Bh2 e3 0–1. iczker – solas1976, internet, 2011.

6.c4 Be6 7.c5 c6 8.a4 Ne7 9.Ne2 g5 10.Nec3 a5 11.b6 Bh6 12.h4 g4 13.g3 f5 14.Nd2 Nd7 15.Ne2 Ng6 16.Qc2 Nb8 17.0-0-0 Na6 18.Nf4 Nf4 19.gf4 Nb4 20.Qb3 Bf8 21.Bc3 h5 22.Bb4 ab4 23.Qb4 Rh7 24.Kb2 Rd7 25.Ra1 Qf6 26.a5 Rdd8 27.a6 ba6 28.Ra6 Ra6 29.Ba6 Qe7 30.Nb3 Qd7 31.Na5 Rb8 32.Qa4 Qg7 33.Nc6 Bd7 34.Bb5 Bc5 35.Nb8 Bb6 36.Nd7 Bc7 37.Nf6 Ke7 38.Nd5 Kd6 39.Nc7 Qc7 40.Rc1 Qb6 41.Rc6 1–0. popovicigelu – brombazynda, internet, 2013.

5.e3 f5

6.c4 c6 7.a4 Nf6 8.Qb3 Be7 9.h4 0-0 10.g3 Nbd7 (10...Be6 11.Ba3=+) 11.Nh3 Re8 12.cd5 cd5 (12...Nd5 13.Nf4 N7f6 14.Bc4=) 13.Nf4= Nf8 14.Nc3 d5 seems the pivot of the position 14...Be6 15.Ne6 Ne6 16.Rc1 (16.Bh3 g6=) 16...Rc8 (16...Qd7 17.Bh3=) 17.Be2 (17.Bh3 g6=) 17...Qd7 (17...Qd6 18.a5=+) 18.0-0 Kh8 (18...Rf8 19.a5=) 19.Kg2 Bd8 (19...Rf8 20.a5=) 20.Ba3 (20.Nd5 Nd5 21.Rc8 f4+-) 20...Bc7 (20...Ba5 21.Bb4 Bb4 22.Qb4=) 21.Bb4 (21.b6 A) worse 21...ab6 22.Bb5 Qf7 23.Be8 (23.Nd5 Red8-/+) 23...Qe8 24.Nb5+/-; B) 21...Bb6 22.Bb5 Rc6=) 21...h6 (21...f4 22.gf4 Bf4 23.a5= (23.ef4?? Nf4 24.Kg3 Qc7-+)) 22.a5 (22.b6 Bb6 23.a5 Bd4 24.Bb5+= (worse 24.ed4 Nd4 25.Qd1 Ne2 26.Ne2 Rc1 27.Nc1 f4=+)) 22...g5? (better 22...f4 23.gf4 Bf4=) 23.hg5 hg5 (23...Ng5 24.Rh1 b6 25.ab6 ab6 26.Rh6 Kg7 27.Rch1+-) 24.Rh1 Kg7 25.Rh2?? (better 25.b6 ab6 26.Bb5+-) 25...Rh8 (25...f4 26.b6 f3 27.Kg1 fe2 28.bc7=+) 26.Rch1 (26.Rh8 Rh8 27.f4 gf4 28.gf4 Kf7=) 26...Rh2 27.Rh2 Rh8 (27...f4 28.Bd1=) 28.Rh8+= Kh8 29.a6 (29.f4 b6=) 29...b6 (29...f4 30.gf4 gf4 31.ab7 f3 32.Kf1 fe2 33.Ke2-+) 30.Qa3 (better 30.Kf1+=) 30...f4-+ 31.gf4 gf4 32.Kf1 (better 32.Be7 Ng8 33.Bb4 f3 34.Kf1 fe2 35.Ke2-+) 32...Qh7?? (better 32...f3-+) 33.Ke1= Qh1 34.Bf1?? (better 34.Kd2 f3 35.Be7=) 34...fe3-+ 35.Bd6 (35.fe3 Bg3 36.Ke2 Qf3 37.Kd2 Qf1 38.Be7 Qd3 39.Kc1 Qe3 40.Kb1 Qd3 41.Ka2-+) 35...ef2 36.Kf2 Qf3 (better 36...Ng4 37.Ke1 Ne3 38.Kd2 Nf1 39.Kc2 Nd4 40.Kb1 Ne3 41.Qc1 Qc1 42.Kc1 Bd6 43.Kd2 Nc4 44.Kd1-+) 37.Ke1 (37.Kg1 e3 38.Bc7 Qf2 39.Kh1 Qf1 40.Kh2 Ng4 41.Kg3-+) 37...Bd6 38.Qd6 Qc3 39.Ke2 Nd4 40.Kf2 Ng4 41.Kg1 Nf3 (41...Qe3 42.Kh1 Qf3 43.Kg1 Qf2 44.Kh1 Qf1) 42.Kh1-+ Qf6 (42...Qe1 43.Qf8 Kh7 44.Qe7 Kh6 45.Qf8 Kg5 46.Qg7 Kf4 47.Qf8 Kg3 48.Qb8 Nfe5 49.Kg1 Qf2 50.Kh1 Qf1) 43.Qg3 (43.Qf6 Nf6 44.Kg2 Nd4-+) 43...Qh4 44.Kg2 (44.Qh4 Nh4 45.Be2 Ne5-+) 44...Qg3 (44...Ne1 45.Kg1 Qg3 46.Kh1 Nf2) 45.Kg3-+ Nge5 (45...Ne3 46.Bh3-+) 46.Kf4 Nc4 (better 46...Kg7!? 47.Ke3-+) 47.Bc4 dc4 48.Ke4 Nd2 (48...c3 49.Kd3 Nd4 50.Kc3 Nb5 51.Kd3-+) 49.Kd4 Kg7 50.Kc3 Nf3 (better 50...Kf6 51.Kd4-+) 51.Kc4 Kf6 (51...Nd2 52.Kd5 Nb1 53.Kc4-+) 52.Kd5 Ke7 53.Kc6 (53.Kc4 Ke6-+) 53...Nd4 54.Kd5 Nb5 55.Kc6 Nd4 56.Kd5 Nb3 57.Kc6 Nc5 58.Kc7 (58.Kb5-+) 58...b5 59.Kc6 b4 60.Kc5 (60.Kb5 b3 61.Kb4 b2-+) 60...b3 61.Kc6 b2 62.Kb7 b1Q (62...Kd7 63.Kb8 b1Q 64.Ka7 Kc7 65.Ka8 Qb8) 63.Ka7 (63.Kc6 Ke6 64.Kc5 Qe4 65.Kb5 Kd5 66.Ka5 Kc4 67.Ka4 Qc2 68.Ka5 Qa2) 63...Qg1 (63...Kd6 64.Ka8 Kc7 65.a7 Qe4) 64.Kb8 (64.Kb7 Kd6 65.a7 Qb1 66.Ka8 Qc2 67.Kb7 Qc6 68.Kb8 Qc7 69.Ka8 Qc8) 64...Qg2 (64...Qb6 65.Ka8 Kd7 66.a7 Qc6 67.Kb8 Qc8) 65.a7-+ Qg3 66.Kb7 Qf3 (66...Kd6 67.a8R Qb3 68.Ka6 Qa4 69.Kb6 Qb4 70.Ka6 Kc7 71.Ra7 Kc6 72.Rc7 Kc7 73.Ka7 Qa5) 67.Kb8 Qf4 68.Kb7 Qe4 69.Kb8 Qe5 70.Kb7 (70.Kc8 Qc5 71.Kb7 Kd6 72.a8N Qc6 73.Ka7 Qb5 74.Nb6 Kc6 75.Kb8 Qb6 76.Kc8 Qc7) 70...Qd5 (70...Kd6 71.Ka6 Qe2 72.Kb6 Qb2 73.Ka6 Kc5 74.a8N Kc6 75.Nc7 Qb6) 71.Kb8 (71.Kc7 Qc5 72.Kb7 Kd6 73.a8N Qc6 74.Ka7 Qb5 75.Nb6 Kc6 76.Kb8 Qb6 77.Kc8 Qc7) 71...Qd6 (71...Qb5 72.Kc7 Qc5 73.Kb7 Kd7 74.a8Q Qb5 75.Ka7 Kc7 76.Qd8 Kd8 77.Ka8 Kc7 78.Ka7 Qa4) 72.Kb7-+ Qb4 73.Ka6 Kd6 74.a8Q Qa4 75.Kb7 (75.Kb6 Qa8 76.Kb5 Qe4 77.Kb6 Qb4 78.Ka6 Kc6 79.Ka7 Qb7) 75...Qa8 (75...Qb5 76.Ka7 Kc7 77.Qd8 Kd8 78.Ka8 Kc7 79.Ka7 Qa4) 76.Ka8= ½-½. zembelek1 (2210) - picasso911 (2265), Rated Blitz tournament, lichess.org, 2016.

6.c4 c6 7.a4 Nf6 8.Nc3 Be6 9.c5 g6 10.Nge2 Bg7 11.Nf4 Bf7 12.Be2 0-0 13.h4 h6 14.h5 g5 15.Ng6 Re8 16.Qb3 Nbd7 17.0-0-0 Qc7 18.Kd2 f4 19.f3?? ef3 20.Bf3 Re3 21.Kc1 Ne4 22.Be4 de4 23.Rhe1?? Bb3 (23...Bb3 24.Ne7 Kh7–+) 0–1. iczker – kadz55 (1635), internet, 2011.

6.c4 c6 7.Nc3 Nf6 8.a4 Be7 9.h4 0-0 10.Be2 Qc7 11.c5 f4 12.ef4 Qf4 13.g3 Qf5 14.Bf1? Ng4–+ 15.Qd2?? Nf2 16.Rh2 Ng4 17.Bh3 e3 18.Qe2 h5 19.0-0-0? Qg6 20.Bg4 Bg4 21.Qe3 Bd1 22.Nd1 Bf6 23.Nh3 Re8 24.Qd2? Qg3 25.Nf4 g6 26.Nh5=+ Qf3 27.Nf6 Qf6 28.Rf2 Qg7 29.Ne3 Nd7 30.Ng4? Re6?? 31.Kb1?? Rae8?? 32.Qg5?? Re1 33.Ka2 R1e2 34.Re2 Re2 35.Ne5 Ne5–+ 36.de5 Rb2?? 37.Kb2+= Kf7 38.Qd8?? Qe5–+ 39.Kb3 Qe3 40.Kb4 Qd4 41.Kb3 Qc4 42.Ka3 Qc5 43.Kb3 Qc4 44.Ka3 Qd3 45.Kb4 Qe4 46.Kb3 Qe7 47.Qh8 Qe3 48.Kb4 Qe4 49.Kb3 Qd3 50.Kb4 Qc4 51.Ka3 Qc5 52.Kb3 Qf8 53.Kc3?? Qh8 (53...Qh8 54.Kd2 Qh4 55.bc6 bc6–+) 0–1. iczker – bluetrain (1695), internet, 2011.

6.c4 Nf6 7.Nh3 c6 8.Nc3 cb5 9.cb5 Be6 10.Rc1 Be7 11.Be2 Nbd7 12.a4 h6 13.Nf4 Bf7 14.Qb3 Nb6 15.h4 Bd6 16.Ba3 0-0 17.Bd6+= Qd6 18.h5 Rac8 19.0-0 Nc4 20.Rfd1 Na5 21.Qb2 Rfd8 22.Rc2 Nc4 23.Qa1 Na3 24.Ra2 Nc4 25.Rc1 Na5 26.Rb2 Rc7 27.b6 ab6 28.Qb1 Rdc8 29.Rbc2 Rc6 30.Nb5 Qd8 31.Na7 Rc2 32.Rc2 Rc2 33.Qc2 Nc4 34.Nb5 Qd7 35.Nc3 Nd6 36.Qb3 Nc8 37.Nb5 Ne8 38.Nc3 Nc7 39.Bf1 Qd8 40.Be2 Qd6 41.Bf1 Ne7 42.Bb5 Kh7 43.Nce2 Ne6 44.Ne6 Be6 45.Be8 Kg8 46.Nf4 Bf7 47.Qb5 Qd8 48.Bd7 Qc7 49.g3 Qd8 50.Be6 Kf8 51.Kg2 ½–½. Jose Luis – Crapov, ChessWorld.net, 2006.

6.Ne2 Bd6 7.c4 c6 8.Nec3 Nf6 9.Qb3 Be6 (9...Bc7 10.Nd2=) 10.Nd2 (10.c5 Be7+=) 10...0-0 11.a4 (11.c5 Be7=) 11...Bf7 (11...Nbd7 12.c5 Bc7 13.Be2=) 12.g3 (12.c5 Bc7+=) 12...Nbd7+= 13.a5 a6 14.b6 Re8 15.Ba3 Ba3 16.Qa3 c5 17.dc5 Rc8 18.Na4 Qe7 The pressure on the backward pawn c5 grows 19.cd5 Nc5 20.Nc5 Qc5 21.Qc5 Rc5 22.Nb3 Rcc8 (22...Rd5 23.Bc4 Rde5 24.Bf7 Kf7 25.0-0-0=) 23.Nd4 g6 24.Be2 Bd5 25.Kd2 Rc5 26.Rhc1 Rec8 27.Rc2 Rc2 28.Nc2 Bc4 29.Nb4 Be2 30.Ke2 Rc5 31.Kd2 (31.h3 Kf7+=) 31...Kf8 (31...Ng4 32.Rc1 Ra5 33.Rc8 Kf7 34.Rc7 Kf6 35.Rb7 Nf2 36.h4–/+ (worse is 36.Rh7 Rb5 37.Na6 Rb6–/+)) 32.Rc1 (32.h3 h6+=) 32...Rc1 (32...Ra5 33.Rc7 Rb5 34.Na6 Rb6 35.Nc5–+) 33.Kc1 Ke7 34.Kc2 (34.Nc2 Kd6 35.Nd4 Kc5–+) 34...Kd6–+ 35.Kc3 (better is 35.Kb3–+) 35...Kc5 36.Nc2 Nd5 37.Kb3 Kb5 38.Nd4 Ka5 39.g4 (39.h3 Nb6 40.g4 fg4 41.hg4 h5 42.gh5 gh5–+) 39...fg4 40.Kc4 (40.Ne6 Nf6–+) 40...Nb6 41.Kc5 Na4 42.Kd5 Nc3 43.Ke5 b5 44.Nb3 (44.Ne6 Kb4 45.Kf4 a5 46.Kg4 a4–+) 44...Kb4 45.Nd2 (45.Nd4–+) 45...a5 46.Ne4 (46.Kd4 a4 47.Ne4 Ne4–+) 46...a4 47.Nc3 Kc3 0–1. Lunin,Mikhail (2230) – Elishev,Ivan (2165), Tournament (Elo) (a), 2008.

5.e3 Bf5

6.c4= c6 7.a4 Bb4 8.Bc3 Bc3 9.Nc3 Ne7 10.Be2 0-0 11.Bg4 (11.Rb1 Qa5 12.Qd2 Qc7=) 11...Bg4 12.Qg4 f5 13.Qg3 (13.Qe2!?=) 13...dc4–/+ 14.Qe5 Rf7 (14...Qd7 15.Rd1–/+) 15.Qc5+= cb5 (15...Nd5 16.Qc4 Nc3 17.Qc3+=) 16.Nb5 (16.ab5!? Qc8 17.Ra4=) 16...Qa5–/+ 17.Ke2 Black now must not overlook the idea Nc7 17...Nd7 18.Qc4 Black creates threats along the open c–file 18...Nb6 (18...Rc8 19.Qa2–/+) 19.Qb3 (19.Qe6 Na4 20.Nd6 Nc3 21.Kd2 Qa1 22.Qf7 Kh8–+) 19...Ned5–/+ 20.Nh3 Na4 (20...Rd7 21.Rhc1 a6 22.Rc7 ab5 23.Rd7–/+) 21.Ra4 Qb5!? 22.Qb5 Theme: Deflection from c3 22...Nc3 A double attack 23.Kd2 Nb5 24.Nf4 Rc8 25.Rb4 (25.Ne6!?+=) 25...Rfc7–/+ 26.Ne2 (26.Rhb1!? Rc2 27.Kd1–/+) 26...Rc2–+ 27.Kd1 Na3 28.Rb7 (28.Rb3 Ra2 29.Nc1–+) 28...Ra2 29.Nc1 Ra1 (29...Ra1 30.Rb8 Rac1 31.Ke2 R1c2 32.Kf1 Rb8–+; 29...Rf2?! 30.g3–+) 0–1. Wartig,Wolfgang – Trokenheim,Marek, corr SOK–89–41, 1991.

6.c4 c6 7.bc6 Nc6 8.cd5 (8.c5 Qa5 9.Nd2 Nge7=) 8...Qd5 9.a3 (9.Qh5 g6 10.Qe2 Rd8+=) 9...Bd6+= 10.Nc3 Qa5 11.Bc4 (11.Qb3 Rb8=) 11...Nge7 (11...Rc8 12.Qb3 Nge7 13.Bf7 Kd8 14.Rd1=) 12.Nge2 Bg6 (12...Rc8 13.0-0=) 13.0-0 a6 (13...Rc8 14.Nb5 Bb8 15.Rc1+=) 14.Ng3+= Bg3 15.fg3 Rd8 16.Qc2 (16.Rc1 Qg5 17.Qe2 b5=) 16...b5 (16...Qg5 17.Rf4=) 17.Ba2 Qb6 (17...f5 18.g4 b4 19.Na4=) 18.Ne4 Na5 (18...Qc7 19.Rac1+/–) 19.Qc5 (19.Rab1 Qc6 20.Qc6 Nac6+=) 19...Nc8 (19...Qc5 20.Nc5 (20.dc5? Be4 21.Rf4 Bd5–+) 20...Nc4 21.Bc4 bc4 22.Rfc1+/–) 20.Qb6 Nb6 21.Nc5 Nac4 22.Bc3 (22.Bc1 a5+=) 22...Ra8 (22...Nd5 23.Bc4 bc4 24.Rfc1=) 23.e4 (23.Bc4 Nc4 24.e4 Rd8+=) 23...Ke7 (23...Na3!? 24.Kf2 Nac4=) 24.a4 (24.Bb3 Nd7 25.Nb7 Be4+/–) 24...Rhc8 (24...Rhd8 25.ab5 ab5 26.Rfb1+/–) 25.Rfb1 (25.ab5!? ab5 26.Bb4+/–) 25...Na4+= 26.Na4 ba4 27.Rb7 Ke8 28.e5 (28.Rg7 Be4 29.Bb4 Rab8+-) 28...Ne5 29.Rg7 Nd3 30.Rd1 (30.d5 Ne5 31.d6 Kd8 32.Ba5 Ke8+-) 30...Be4 31.Bd2 (31.d5 f5+=) 31...a5 (31...Rab8 32.Be6 Rd8 33.Bd7 Rd7 34.Rg8 Ke7 35.Rb8 Rd4 36.Kf1+=) 32.Be6 (32.Bf7 Kd8+=) 32...Rc2 (better is 32...Rd8!?=) 33.Rg8 Ke7 34.Ra8 White fights for the Initiative 34...Ke6 (34...Ba8 35.Bf5 Rd2 36.Rd2 Nc1+-) 35.Ra5+/– Ra2 36.Kf1 Bd5 37.Ke2 Bb3 (37...Ra3 38.Ra6 Kf5 39.Be3+=) 38.Rg1 (38.Rb1 Bc4+-) 38...Nb2 (38...Bc4 39.d5 Ke5 40.Ke3+/–) 39.Re1 Kf7 (39...a3 40.Kf3 Kd7 41.Ra7 Kc6 42.Rh7 Bd1 43.Ke3 Nc4 44.Kd3 Nb2 45.Kc3 Na4 46.Kb4 Rd2 47.Ka3 Rd3 48.Ka2 Bb3 49.Kb1=) 40.Ra7 Kg6 41.Bb4 (41.Re7 Nc4 42.Kf3 Rd2–+) 41...h5 (41...Nd1 42.Kf3+-) 42.Rc7 (42.Re7 Bc4 43.Kf3 Bd5 44.Ke3 Nc4 45.Kd3 Rg2+/–) 42...Kf5 (42...Bd5 43.Ke3+-) 43.Rf1 Kg6 44.Re1?? (44.Ke3 Bd5+-) 44...Kf5 45.Rf1?? (45.Re7 Nc4 46.Kf3 a3+-) 45...Kg6 46.Kf3 (46.Rb1 Bd5+-) 46...Bd5 47.Ke3 Nc4 (47...a3 48.Be7 f5 49.Rfc1+-) 48.Kd3 Nb6 (48...Bg2 49.Rc1 (49.Kc4 Bf1 50.Kc3 Rh2+=) 49...Nb2 50.Ke3+-) 49.Rfc1 (49.Be7 f5 50.Kc3 Bg2 51.Rf5 Kf5 52.g4 Kg4–+) 49...Be6 (49...Kf5 50.Rh7 Kg6 51.Rcc7 Bc4 52.Kc3+= (52.Rc4?! Kh7 53.Rc7 Kg6+/–)) 50.R7c6 Bf5 51.Kc3 Nd5 52.Kc4 Be4 53.Rd6 (53.Re6 Kf5 54.Re8 Bg2+-) 53...Ne3 54.Kc5 Rg2 55.Re6 (55.Ra6 Rc2 56.Rc2 Bc2+-) 55...Kf5+/– 56.Re8 (56.Kd6 Rb2 57.Rc5 Nd5+/–) 56...Rf2? (better is 56...Rh2 57.Kb5 Rg2+=) 57.Re1 Rc2 58.Kd6 (58.Kb6!? Nd5 59.Ka5 Rb2+-) 58...Nc4+/– 59.Ke7 Bg2 (59...Bd5!?+/–) 60.Rf8+- Rb2 (60...Kg4 61.Kf6 Bd5 62.Rd8 Rf2 63.Ke7 Rf7 64.Ke8+-) 61.Rf6 Kg5 62.h4 Kg4 63.Rg6 Kh3 (63...Kf3 64.Bc3 Rb7 65.Ke6 Rb6 66.Kf5 Nd6 67.Kg5 Ne4 68.Re4 Rg6 69.Kg6 Ke4 70.Kh5+/–) 64.Bc5 (64.Bc3 Rc2 65.Ba1 Bd5+-) 64...a3 65.Ra1 (65.Rg5 Rb7 66.Kf6 Bf3+-) 65...a2 (65...Re2 66.Re6 Re6 67.Ke6 Kg3 68.d5+-) 66.Ra6 Kg3 67.R1a2 Ra2 68.Ra2 Bd5 69.Ra1 (69.Ra7 Kh4 70.Kf6 Kg4+-) 69...Kh4 70.Rg1 Nd2 (70...Ne3 71.Kd6+-) 71.Kd6 (71.Kd6 Bf3 72.d5+-) 1–0. Bonetti,Shane (2030) – Alvarez Villar,Nelson (2250), TT–16 ETC, 2005.

6.c4= c6 7.cd5 cd5 8.Nd2 Bd6=.

6.c4 Ne7 7.Nc3=.

4.e3 a5

5.c4 d4 6.Nf3 (6.Bd3 Nh6+=) 6...c5 (6...d3 7.e4=) 7.d3 (7.Bd3 Bd6+=) 7...b6 (7...Bd6 8.Be2=) 8.Be2+= de3 9.fe3 g5? (9...Nh6!?+=) 10.0-0 (10.Ne5 Be6+-) 10...g4? (better 10...Bd6+/-) 11.Ne5!+- Bd6 (11...fe5 12.Be5 Combination) 12.Ng4 Nd7 (12...Qe7 13.Kh1 (13.Bf6?! Nf6 14.Nf6 Kd8+-) 13...Bg4 14.Bg4+-) 13.Nf6! Ngf6 (13...Ndf6 14.Bh5 Combination; 13...Ngf6 14.Bh5 Combination) 14.Bh5 Ke7 15.Qf3 Be5 (15...Qf8 16.Qa8 Qh6 17.Bf3+-) 16.d4 (better 16.Be5 Rf8 17.Bf6 Nf6 18.Qa8 Qd3 19.Qa7 Nd7+-) 16...Nh5?? (16...Bh2 17.Kh2 Qc7 18.Kg1+-) 17.Qh5 (better 17.Qf7 Kd6 18.dc5 Kc7 19.Be5 Kb7 20.c6 Ka7 21.cd7+-) 17...Bf6 (17...Qe8 18.Qf3 Rf8 19.Qa8 Bh2 20.Kh2 Rf1 21.Qe4 Kd8 22.Qe8 Ke8+-) 18.dc5 Rf8 (18...bc5 19.Qd5 Qc7 20.Bf6 (20.Qa8?! Bb2 21.Qe4 Qe5=) 20...Nf6 21.Qa8+-) 19.Qh7 Rf7 (19...Ke8 20.Qg6 Rf7 21.Qe4 Qe7 22.Qa8 Qe3 23.Kh1 Qc5 24.Bf6 Rf6 25.Rf6 Nf6 26.Nd2+-) 20.Qe4 Kf8 21.Bf6 (21.Qa8 Bb2 22.Rf7 Kf7 23.Qd5 Ke8 24.Qe6 Qe7 25.Qe7 Ke7=) 21...Rf6 22.Nd2 (22.Nc3 Rb8 23.Qg6 Qe7+-) 22...Ra7 (22...Rb8 23.c6 Bb7 24.cb7+-) 23.c6 (23.Qg6 Qe8 24.Rf6 Nf6 25.Qf6 Kg8 26.cb6 Rg7+-) 23...Nc5 (23...Kg7 24.Qd4 Kg6+-) 24.Qc2 (better 24.Qd4 Qd4 25.ed4 Raf7 26.dc5 bc5+-) 24...Rd7?? (better 24...Raf7+-) 25.Rf6 Qf6 26.Rf1 (26.cd7 Qa1 27.Nf1 Bd7=) 26...Rd2 (26...Qf1 27.Nf1 Rc7+-) 27.Rf6 (27.Rf6 Ke7 28.Qd2+-) 1-0. zembelek (2105) - amayak (2065), Rated Blitz game, lichess.org, 2013.

5.Nf3 Bd6 6.Be2 Be6 7.0-0 Ne7 8.d3 (8.d4 Nd7+=) 8...0-0=+ 9.Nbd2 c5 (9...Nd7 10.c4=+) 10.c4 (10.a4 Nd7=) 10...Nd7 (10...a4 11.a3=) 11.a4 Nb6 12.cd5 (12.Qc2 Qd7=) 12...Ned5 13.Nc4 (13.Ne4 Nb4=) 13...Nc4 14.dc4 Nb4 15.e4 Qe7 (15...Qb6 16.Nh4=) 16.Qb3 Bc7 (16...Rad8 17.Rfd1=+) 17.Rad1 Rad8 18.Rd2 (18.Nh4 b6=) 18...Rd2 (18...b6 19.Rfd1=) 19.Nd2 Rd8 (19...f5 20.Bc3=) 20.Rd1 Rd4 (20...f5 21.ef5 Bf5 22.Nf1=) 21.Bd4+= ed4 22.g3 f5 (22...Bd7 23.f4+=) 23.Qf3+- f4 (better 23...g6+-) 24.g4?? (24.gf4!? Qd7 25.Nf1+-) 24...Na2 (24...Qg5 25.h3=) 25.Kg2 (better 25.e5!? Nc3 26.Re1+-) 25...Nc3=+ 26.Rh1 Na4 (26...h6=+) 27.h4? (better 27.e5!? h5 28.Re1=) 27...Nc3–/+ 28.Bd3 (better 28.Nb1 Ne2 29.Qe2–/+) 28...Qf7?? (28...Be5 29.g5–/+) 29.Re1?? (better 29.e5 Bb8 30.Ne4 Ne4 31.Qe4+-) 29...Be5–/+ 30.Rg1? (30.g5!?–/+) 30...Qd7 (30...a4 31.Ra1 Qd7 32.Kh1–+) 31.Kf1 (31.Kh1 a4 32.Qg2 a3–+) 31...a4 32.Qg2 (32.g5 a3 33.g6 a2–+) 32...h5! 33.f3 (33.gh5 Bh3 Combination) 33...Nd1 (better 33...a3 34.Kf2 hg4 35.fg4–+) 34.Qh3 (34.Ke2 Ne3 35.Qh1 hg4–+) 34...Ne3 (34...hg4 35.fg4 a3 36.Ke1–+) 35.Ke1 (35.Ke2 hg4 36.Qh1 Bf6–+) 35...hg4 36.Qh1 g3 (36...a3 37.Ke2 Bf6 38.e5 Be5 39.Ra1 gf3 40.Nf3–+) 37.Ke2 (37.h5 Kh7 38.h6 gh6–+) 37...g2 (better 37...Qf7 38.Rb1–+) 38.Rg2 Ng2 39.Qg2 a3 (better 39...Qc7 40.Nb1–+) 40.Nb3 (40.Kd1 Qd8 41.Nb1 Qh4 42.Na3 g5–+) 40...b6 (better 40...Qf7!? 41.Nd2 a2 42.Qg1–+) 41.Qg5 Qc7 (41...Bc7 42.h5 Qd8 43.Qg6–+) 42.h5 (42.Qh5 Bf7 43.Qf5 g6–+) 42...Bf6 (better 42...a2 43.Kd2 Bf6 44.Qg6–+) 43.Qg2 (43.Qg6 Qf7 44.e5 Be5–+) 43...Qe5 (43...Qf7 44.Kd1 Bc4 45.Bc4 Qc4 46.Nc1 Qa4 47.Qc2 Qb5 48.Qa2 c4 49.h6 Qa4 50.Qc2 Qc2 51.Kc2 gh6 52.Kd2–+) 44.h6 g5 (44...Qh5 45.hg7 Bh3 46.Qh1–+) 45.Qh2 (45.Kf1 g4! 46.fg4 Be7–+) 45...a2 (better 45...g4 46.Nc1 Qg5 47.fg4 Bg4 48.Kd2 f3 49.Kc2–+) 46.h7 (46.Kd1 g4 47.Qa2 g3–+ (47...gf3?! 48.Qa7–/+)) 46...Kh8 47.Qh5?? (47.Kf1 g4 48.Qa2 gf3 49.Qh2–+) 47...g4 48.Qh6 (48.Qg6 g3–+) 48...g3 49.Kd1 (49.Qg6–+) 49...Qg5 (49...g2 50.Qh2 Bc4 51.Bc4 d3 52.Qg2 a1Q 53.Nc1 Qc1 54.Kc1 Qa1 55.Kd2 Qb2 56.Kd3 Qc3 57.Ke2 Qc2 58.Ke1 Bc3 59.Qd2 Bd2 60.Kf1 Be3 61.Be2 Qb1 62.Bd1 Qd1 63.Kg2 Qg1 64.Kh3 Qg3) 50.Qf8 Kh7 51.e5 Bf5 52.Bf5 (52.ef6 Bd3 53.Qf7 Kh6 54.Qf8 Kg6 55.Qg7 Kf5 56.Qd7 Kf6 57.Qd8 Kg6 58.Qg8 Kh6 59.Qf8 Qg7 60.Qf4 Kh5 61.Na1 Bc4 62.Qb8–+) 52...Qf5 53.Qf7 Kh6 54.ef6 Qd3 55.Kc1 (55.Ke1 Qe3 56.Kd1 Qb3 57.Kd2 Qc3 58.Ke2 Qc2 59.Ke1 a1Q) 55…Qe3 (55...Qe3 56.Kb2 Qf2 57.Ka1 g2 58.Qg7 Kh5 59.Qg4 Kh6 60.Qg7 Kh5 61.Qg4 Kh6 62.Qg7=; 55...Qc3 56.Kd1 Qb3 57.Kd2 Qc3 58.Ke2 Qc2 59.Ke1 a1Q) 0–1. Plock,Joerg – Enigk, Magdeburg, 1995.

5.Nh3 c5 6.f4 Bh3 (6...Nd7!?=) 7.Qh5+= g6 8.Qh3 Qe7? (better 8...ef4 9.ef4 Qd7 10.Qe3 Kf7+=) 9.Nc3+- Nd7 10.Nd5 Qe6?? (better 10...Qd6 11.Bc4 ef4 12.ef4 Ne7+-) 11.Qe6 Kd8 12.fe5 Ne7 13.ef6 (better 13.Nf6 Nf6 14.ef6 Nf5+-) 13...Nd5 14.Qd5 Rc8 15.g3 Kc7 16.Bh3 (better 16.b6 Kb6 17.Qd7 Bd6+-) 16...Nf6 17.Bf6 Rd8 (17...Bd6 18.Bg2 Rb8 19.b6 Kb6 20.Rb1 Ka6 21.Rb7 Bg3 22.hg3 a4 23.Qc6 Ka5 24.Qb6) 18.Qd8 1-0. FeegLood (2755) - clyde34 (1940), lichess.org, 2016.

5.c4 c6

6.a4 Bb4 7.Nf3 Ne7 8.Qb3 e4 9.Ng1 (9.Nd4 c5 10.Ne2 Be6+=) 9...0-0 (9...Nd7 10.Bd4=+) 10.Nc3 (10.Ba3 Ba3 11.Na3 Nd7=+) 10...f5 (10...Nd7 11.cd5 Nc5 12.Qc2 cd5 13.Na2=) 11.Nh3 (11.cd5 Nd5 12.Nd5 cd5= (12...Qd5?? 13.Bc4 Bd2 14.Kf1+-)) 11...Be6 (11...Nd7 12.cd5 Nc5 13.Qc2 Nd5 14.Nd5 cd5 15.Bc3 Bc3 16.Qc3=+) 12.Ng5= Qd7 13.Ne6 Qe6 14.Be2 Nd7 15.g3 (15.cd5 Nd5 16.0-0 Nc5=+) 15...Nc5-/+ 16.Qa2 Nd3 (16...Rad8 17.cd5 Nd5 18.Nd5 cd5 19.Bd4=+) 17.Bd3=+ ed3 18.cd5 cd5 19.0-0 Rac8 20.Rfe1 Rc4 (20...Ng6 21.Nd5 Rc2 22.Nb4 Qa2 23.Na2 (worse 23.Ra2 ab4 24.Rb1 Ne5-/+) 23...Rb2 24.Red1=) 21.Qb1 Bc3 22.Bc3 Qe4 23.Rf1 (23.Qd1 Ra8+=) 23...f4 (23...Rc3 24.dc3 Ng6 25.f3 Qe3 26.Kg2=) 24.f3 (24.ef4 A) 24...Ra4?? 25.Re1 (25.Ba5?! Ra1 26.Qa1 Ra8+=) 25...Qc4 26.Re7+-; B) 24...Qg6+=) 24...Qg6= 25.ef4 d4 (25...Rcf4 26.Qe1 Nf5 27.Kh1= (worse 27.Ba5 Nh4-/+)) 26.Qa2 (26.Ba5 Rfc8+/-) 26...Qf7 (26...Rfc8 27.Bd4 Nd5 28.Be5+=) 27.Bb2 (27.Ba5 Ra8 28.Rfe1 Rc2+/-) 27...Rfc8 28.Qb3 (28.Qa3 Rb4 29.Rae1 Nd5+=) 28...Nd5 (28...Rc2 29.Qf7 Kf7 30.Bd4 Rd2 31.Rfd1 Rd1 32.Rd1+/-) 29.Rae1 (29.Qd3 Nb4 30.Qb3 d3+=) 29...Nb4 (29...Rc2 30.Bd4 Rd2 31.Re5=) 30.Re4 Attacking the isolated pawn on d4 (30.Re5 Nc2 31.Ba3 b6+=) 30...Qd5? (better 30...Rc2!? 31.Qf7 Kf7 32.Bd4 Rd2=) 31.Rfe1 Nc2?? (better 31...Rc2 32.Qd5 Nd5 33.Bd4 Rd2=) 32.Rf1 Rb4?? (better 32...Nb4=) 33.Qd5+- (33.Qd5 Kh8 34.Bd4 Rd4 35.Rd4 Nd4 36.Qd4+-) 1-0. zembelek (2115) - amayak (2060), Rated Blitz game, lichess.org, 2013.

6.a4 Be6 7.Qc2 (7.cd5 cd5 8.d4 Nd7=) 7...Bd6 (7...Nd7 8.bc6 bc6 9.Nf3=+) 8.d4 (8.c5 Be7=) 8...e4 (8...Bb4 9.Nd2=) 9.Nd2 (9.c5 Be7+=) 9...Bb4 (9...Nd7 10.Ne2=) 10.Bc3+= Bc3 11.Qc3 Ne7 12.Qb3 Nd7 13.c5 White plans b6 13...0-0 (13...Bf5!?+=) 14.Ne4+/- Kh8 15.Nd6 Rb8 16.b6 (16.Qc2 cb5 17.Bb5 b6+/-) 16...f5 (16...Nb6!? 17.Qb6 Qb6 18.cb6 Rfd8+=) 17.g3 (17.Nh3 Nc8 18.Nc8 Rc8+-) 17...Ng6 (17...Nf6 18.Bd3+/-) 18.Nh3 Nf6 19.Bd3 Ne4 20.Be4 fe4 21.Nf4 Bg4 (21...Qf6 22.Qc3+/-) 22.Qc3 (22.Ng6!? hg6 23.h3 Bf3+/-) 22...Nf4+/- 23.gf4 Qh4 24.Ra2 (24.h3!? Bf3 25.Rf1+=) 24...Bf3= 25.Rg1 Qh2 26.Rf1 (26.Kf1 Kg8 27.Qa5 Ra8 28.Nb7 Ra5 29.Na5 Qh3 30.Ke1 Qc8 31.Nc6 Qc6-+) 26...Bg2=+ 27.Qa5 Bf1 28.Kf1 h5 29.Qe1 (29.f5 g6 30.fg6 Rf6 31.g7 Kg7-+) 29...h4 (29...Qh3!? 30.Kg1 Rf6-/+) 30.Ke2=+ h3 (30...Qg2 31.Ra1 Qf3 32.Kd2 Rf4 33.ef4 Qd3 34.Kc1 Qd4 35.Kb1 Qc5 36.Nf5 Qb6 37.Kc2 Qc5 38.Kb3=+) 31.Ra1= Rf6?? (better 31...g5 32.Qg1 Qg1 33.Rg1 gf4=) 32.Qh1+/- Qh1 33.Rh1 Rh6 (33...Re6 34.Rh3 Kg8 35.a5+-) 34.f5 (34.Nf7 Kh7 35.Nh6 gh6 36.Rh3 Ra8+-) 34...h2? (34...Rh5 35.a5+/-) 35.f3?? (35.Nf7 Kh7 36.Nh6 gh6+-) 35...Ra8? (better 35...ef3 36.Kf3 Rh3 37.Kg4 Re3 38.Rh2 Kg8+=) 36.fe4 de4 (better 36...Rh3 37.ed5 Ra4 38.dc6 bc6+-) 37.Ne4 (better 37.Nf7 Kh7 38.Nh6 gh6 39.Rh2 Ra4 40.Rh4 Ra2 41.Kf1+-) 37...Ra4+/- 38.Kf3 (38.Nd6 Ra2 39.Kf3 Rh3 40.Ke4=) 38...Ra2 39.Kg3 Re2 40.Kf3 Rb2 41.Nd6 Rh3 42.Kf4 (42.Ke4 Re2 43.Nb7 Rhe3 44.Kf4 Rd3=) 42...Rg2 (better 42...g5 43.Kg5 Re3=) 43.e4 (better 43.Nb7!? Rg1 44.Rh2 Rh2 45.Nd8+=) 43...Rg1-/+ 44.Rh2 Rh2 45.Nb7 Rh4 46.Ke5 White intends d5 46...Re1 (better 46...g6!? 47.Nd6 gf5 48.Nf5 Rhg4=) 47.Nd6+/- Kg8 48.b7 Rb1 49.Ke6 (better 49.d5 Rh7 50.dc6+-) 49...Rb7+= 50.d5?? (better 50.Nb7 Re4 51.Kd7 Rd4 52.Nd6=) 50...Rc7 51.dc6 Rc6 52.Kd5 Rc7 53.c6 Rh1 54.e5 Rd1 55.Kc5 Rc1 56.Nc4 Rc4! 57.Kc4 Rc6 58.Kd5 Rc8 59.Kd6 Kf7 60.Kd7 (60.Kd5 g5 61.fg6 Kg6-+) 60...Ra8 (60...Rc2 61.Kd6-+) 61.e6 (61.Kd6 Ra5-+) 61...Kf6 62.e7 Ra7 63.Kd6 (63.Kd6 Re7 64.Kd5-+). zembelek (2105) - amayak (2060), Rated Blitz game, lichess.org, 2013.

6.d4 e4 7.a4 Bb4= 8.Bc3 Bc3 (8...Be7 9.bc6 bc6 10.Nd2+=) 9.Nc3+= Ne7 10.Qb3 f5 11.c5 (11.Nh3 Be6+=) 11...0-0 12.Nh3 Be6 (12...Ng6 13.Be2+=) 13.Ng5 (13.Be2 Nd7+=) 13...Qd7 (13...Bc8 14.Rb1=) 14.Ne6 (14.Rb1 Ng6+=) 14...Qe6= 15.g3 Nd7 16.b6 g5 Black plans f4 (16...Rae8 17.Be2=) 17.h4 f4 18.hg5 fe3 19.fe3 Qg4 20.Be2 Qg3 21.Kd2 Nf5 22.Ne4 Nd4 23.Qd3 (23.Ng3?? Nb3 24.Kc2 Na1 25.Ra1 Nc5-+) 23...de4 (23...Qe5 24.Nf6 Nf6 25.gf6 Nf5 26.Rag1 Kf7+-) 24.Qd4+- Qe5 (better 24...Ne5 25.Qe4 Rad8 26.Kc3 Ng6+-) 25.Bc4 (25.Qd7 Qb2 26.Ke1 Qa1 27.Bd1 Qc3 28.Qd2 Qd2 29.Kd2 Rf5-+) 25...Kg7 (25...Kh8 26.g6 Qd4 27.ed4 Nf6+-) 26.Kc3 (26.Qd7 Kg6 27.Qh7 Kg5 28.Rag1 Qg3 29.Qg7 Kf5 30.Rh5 Qg5 31.Rhg5) 26...Qd4 (26...Rae8 27.Rh5=) 27.ed4 Rae8 (27...Rf3 28.Kb2=) 28.Raf1 Rf1 29.Rf1 Kg6?? (29...Re7 30.Kd2+=) 30.Rh1 (better 30.Bf7 Kg5 31.Be8+-) 30...Re7 (worse 30...Kg5 31.Rh7 Rd8 32.Bf1+-) 31.Rg1 Re8 (31...h5 32.gh6 Kh6 33.Kd2+=) 32.Kd2+= e3 (32...Nf8!?+=) 33.Ke2+/- Kf5 (better 33...Nf8!? 34.Rg3 Kf5 35.Re3 Re3 36.Ke3 Nd7+-) 34.Bd3+- Kf4 35.Bh7 Nf8 (35...Rh8 36.g6 Nf6 37.Rf1 Kg5+-) 36.Bd3?? (better 36.g6 Ne6 37.g7 Nd4 38.Kd3+-) 36...Ne6= Attacking the isolated pawn on g5 37.g6 (better 37.Rf1 Kg5 38.Be4 Nd4 39.Ke3=) 37...Nd4-/+ 38.Kd1 e2 39.Be2 Ne2 (worse 39...Re2 40.g7 Re8 41.g8Q Rg8 42.Rg8+-) 40.Rf1 Ke3 41.g7 Nc3?? (better 41...Rg8 42.Rf7 Nc3 43.Kc2 Na4 44.Rb7 Nc5-/+) 42.Kc2+= Kd4?? (42...Rg8 43.Kc3 Rg7 44.Re1 Kf4 45.Re8+/-) 43.Rf8 (better 43.Rf4 Kc5 44.Rf8 (44.Kc3?! Re3 45.Kd2 Rg3=) 44...Re2 45.Kc3 Re3 46.Kd2+-) 43...Re2+/- 44.Kc1 (better 44.Kb3!? Rg2 45.g8Q Rg8 46.Rg8+/-) 44...Rg2= 45.g8Q Rg8 46.Rg8 Kc5 47.Kc2? (better 47.Rg4-/+) 47...Na4-+ 48.Rg5 Kb6 49.Kb3 Nc5 50.Kc4 Na6 51.Rg1 a4 (better 51...Nc7 52.Rg8-+) 52.Rb1? (52.Rg7-+) 52...Ka7 53.Rh1 b5 54.Kc3 Kb6 55.Rh6 b4 56.Kc4 a3 57.Rh2 (57.Rh5 c5-+) 57...c5 (57...Ka5 58.Kb3-+) 58.Rc2 (58.Rh8 Nc7-+) 58...Ka5 (58...Nb8 59.Rg2-+) 59.Kb3 (59.Re2-+) 59...Kb5 60.Rh2 (60.Rc4 Nb8-+) 60...Nb8 (better 60...c4!? 61.Ka2-+) 61.Rh5 Nc6 62.Rh8 (62.Ka2 Nd4-+) 62...Nd4 (62...c4!? 63.Ka2 c3 64.Rh5 Ka4 65.Rh4-+) 63.Ka2 c4 64.Rb8 Kc5 65.Rc8 Nc6 66.Rh8 c3 67.Rc8 (67.Rh5 Kc4 68.Rh8-+) 67...c2 68.Rc7 (68.Rf8 c1Q 69.Rf2 Nd4 70.Rf5 Nf5 71.Kb3 Kb5 72.Ka2 Qb2) 68...c1Q 69.Rc6 Kc6 70.Kb3 Qc3 (70...Kb5 71.Ka2 Qb2) 71.Ka4 Qc4 72.Ka5 Qb5 0-1. zembelek (2115) - amayak (2055), Rated Blitz game, lichess.org, 2013.

6.d4 e4 7.a4 Bb4= 8.Nd2 Ne7 9.Qb3 (9.Ba3 Ba3 10.Ra3 0-0+=) 9...0-0 (9...Bd2 10.Kd2 Be6 11.c5=) 10.Bc3 Bc3 11.Qc3 Be6 12.Qb3 Bf7 13.c5 b6 14.bc6 (14.Rc1!?+=) 14...bc5=+ 15.Qb7? (better 15.dc5 Nbc6 16.Qd1=+) 15...Nbc6-+ 16.Bb5? (16.Qb2 cd4 17.ed4-+) 16...Rb8 17.Qa6 (17.Bc6 Rb7 18.Bb7 cd4 19.ed4 Qb6-+) 17...Rb6 18.dc5 (18.Qb6 Qb6 19.dc5 Qc5 20.Ne2-+) 18...Ra6 19.Ba6 d4 (19...Nb4 20.Rc1 Na6 21.Ne2-+) 20.Ne2 (20.Rc1 de3 21.fe3 Nb4-+) 20...de3 21.fe3 Nf5 (better 21...Nb4 22.Ne4 Na6 23.Rd1-+) 22.Ne4 Ne3 23.Kf2 Ng4 24.Kg3 Ne3 (24...Qe8 25.N2c3 Qe5 26.Kg4 f5 27.Kh3 fe4 28.g3 Qh5 29.Kg2 Qf3 30.Kg1 Qc3 31.Rf1 Bd5 32.Kg2 Qd2 33.Kh3 Be6 34.g4 Bg4 35.Kg3 Qe3 36.Kg4 Ne5 37.Kh4 Qh6 38.Kg3 Qg6 39.Kh4 Qg4) 25.Nd6?? (25.Kf2 f5 26.Nd6 Ng4 27.Kf1-+) 25...Qe7 26.Rhe1 (26.Rac1-+) 26...Qe5 27.Nf4 g5 28.Re3 gf4 (28...Qf4 29.Kh3 Qh4) 29.Kh3 (29.Kf2 fe3 30.Ke1 Qa1 31.Ke2 Bh5 32.g4 Bg4 33.Kd3 Qd4 34.Kc2 Nb4 35.Kb1 Qd1 36.Kb2 Qc2 37.Ka3 Qc3) 29...Qe3 (29...Qh5) 30.g3-+ Be6 31.Kh4 fg3 32.hg3 (32.Nf5 Bf5 33.Bc4 Kg7 34.hg3 Qg5) 32…Qh6 (32...Qg5) 0-1. zembelek (2115) - amayak (2050), Rated Blitz game, lichess.org, 2013.

6.d4 e4 7.a4 f5 8.Qb3 Nf6 9.Nc3 Bb4 10.0-0-0 (10.Ba3!? cb5 A) 11.Bb4? bc4 12.Ba5 Qa5-+ (12...cb3?! 13.Bd8 Kd8 14.Rb1=); B) 11.ab5 Ba3 12.Ra3 dc4 13.Bc4+=) 10...0-0 (10...Be6 11.c5=+) 11.h3 (11.Nh3 Be6=+) 11...Be6-/+ 12.Be2 (12.c5 cb5 13.ab5 b6-/+) 12...Nbd7 (12...cb5 13.cb5 Nbd7 14.Kd2-/+) 13.g4 (13.c5!?-/+) 13...fg4 14.hg4 Bc3 15.Bc3 Bg4 (15...Ng4 16.Bg4 Bg4 17.Rd2-+) 16.f3 (16.cd5!? cb5 17.d6 Rf7 18.Qb5-/+) 16...ef3-+ 17.Bf3 Bf3 18.Nf3 dc4 (18...cb5!? 19.cb5 Nb6-+) 19.Qc4-/+ Nd5 20.Nh4?? (better 20.Ne5 Ne5 21.de5-/+) 20...N7f6 (better 20...N7b6 21.Qa2 cb5-+) 21.Rdf1 (21.Bd2 Rc8 22.b6-+) 21...Qe7 (better 21...cb5 22.Qb5 Qc7-+) 22.Nf5-/+ Qa3 23.Bb2 Qb4 24.Qa2 Rf7 (24...Ne4 25.bc6 bc6 26.Ba1-+) 25.Rhg1 (better 25.bc6 Rc8 26.Kd1-/+) 25...Kf8?? (25...Kh8 26.bc6 bc6 27.Ba1-+) 26.e4 (better 26.Ba3 Rd7 27.Bb4 ab4 28.bc6 bc6 29.Qc4+-) 26...Nc3-/+ (26...Ne4?? 27.Ba3 g6 28.Nh6+-) 27.Qe6? (27.Qa1 Ne2 28.Kd1 Ng1 29.Ba3 Ne4 30.Qb2=+) 27...Ne2-+ 28.Kb1 Ng1 29.Rg1 Re8 (29...Qa4?? 30.Rg7 Rg7 31.Qf6 Ke8 32.Ng7 (32.Qg7 Qd1 33.Bc1 Qb3 34.Ka1 Qa4 35.Kb2 Qb5 36.Kc3 Qb4 37.Kd3 Qb5 38.Kd2 Qb4 39.Kd1 Rd8+-) 32...Kd7 33.Qf5 Ke7 34.bc6 (worse 34.Qh7 Qd1 35.Ka2 Qa4 36.Ba3 Kf6 37.e5 Kg5+-) 34...bc6 35.Qh7 Qd1 36.Ka2 Qa4 37.Ba3 Kf6 38.e5 Kg5 39.Ne6 Kg4 40.Qe4 Kg3 41.Qd3 Kg4 42.Nc5+-) 30.Qd6 Qd6 31.Nd6 Rfe7 (better 31...Re4!? 32.bc6 bc6 33.Nf7 Kf7-+) 32.Ne8 Ke8 (worse 32...Ne8 33.Ba3 cb5 34.ab5+/-; 32...Re8?! 33.bc6 bc6 34.e5=+) 33.e5 Nd5 34.Rh1 (34.bc6 bc6 35.Kc2 Rd7-/+) 34...g6 (34...cb5 35.Rh7 ba4 36.Ba3-/+) 35.Ba3 Rf7 36.Kc2 (36.bc6 bc6 37.Rc1 Rf3-/+) 36...Rf3 (36...Rf2!? 37.Kb3 Rf3 38.Kb2 cb5 39.ab5-+) 37.Bd6 h5 38.Rg1 (38.bc6 bc6 39.Bc5 Nb4 40.Bb4 ab4-/+) 38...Nf4 39.Rg5 (39.bc6 bc6 40.Rb1 Ne6 41.Rb8 Kf7 42.Rb7 Kg8-+) 39...Kd7 (39...cb5 40.ab5 a4 41.Bc5-+) 40.Bc5 (40.bc6 bc6 41.Bc5 h4-+) 40...Ke6 (40...cb5 41.ab5 a4 42.Rg1 Rf2 43.Kb1-+) 41.Kd2 (41.bc6 bc6 42.Bb6 h4 43.Ba5 h3-+) 41...h4 42.Rg4 h3 43.Rh4 (43.bc6 bc6 44.Rh4 g5-+) 43...g5 44.Rh6 Kd5 45.Rd6 (45.b6 g4 46.Rd6 Kc4 47.Rh6 Rf2 48.Ke3-+) 45...Kc4 46.e6 (46.bc6 h2 47.Rh6 Nh3 48.Rf6 Rd3 49.Ke2 h1Q 50.cb7 Qd1) 46...h2 47.e7 (47.d5 h1Q 48.dc6 Qg2 49.Bf2 Rf2 50.Kc1 Qf1 51.Rd1 Nd3 52.Kb1 Qd1) 47...h1Q 48.e8Q (48.d5 Qg2 49.Bf2 Rf2 50.Ke3 Qf3) 48...Qg2 (48...Rf2 49.Qe2 Re2) 49.Kd1 Rf1 50.Qe1 Qe2 (50...Qe2 51.Kc1 Re1) 0-1. zembelek (2100) - amayak (2100), Rated Blitz game, lichess.org, 2014.

5.Qh5 g6

6.Qd1 c5 7.d3 d4 8.e4 (8.Nf3 a4=) 8...Bg7 9.Nd2 Ne7 10.Ngf3 a4 11.a3 (11.Nc4 0-0=+) 11...Bd7-/+ 12.c4 dc3 13.Bc3 Bb5 14.Rb1 Bd3 (14...Bc6-/+) 15.Bd3 (better 15.Rb7 Bf1 16.Rf1-/+) 15...Qd3-+ 16.Rb7? (better 16.Ba1 Ra7 17.Qc1-+) 16...Qc3 17.0-0 Nbc6 (17...Qa3 18.Qb1 Qc3 19.Rc1=+) 18.Qb1 (18.Nb1 Qc4-+) 18...0-0 (better 18...Bh6 19.Qa2-+) 19.Rc1 Qa5 (19...Qa3?! 20.Nc4 Qb4 21.Rb4 cb4 22.Nb6-/+) 20.Qa2 (20.Rb5 Qc7-+) 20...Kh8 21.Qe6 Qd8 (21...Bh6!? 22.Nc4 Qa6 23.Rcb1-+) 22.Rd7 Qe8 23.Nc4 (23.Rc5 f5 24.Qd6 Rd8 25.Rd8 Nd8-+) 23...Rd8 24.Rcd1 Nd4 (better 24...Bh6 25.Nb6-+) 25.Rd8?! (25.R1d4 cd4 26.Re7 Rb8-+) 25...Qd8 (25...Ne6 26.Re8 Re8 27.Rd7-+) 26.Nd4 cd4 (26...Nc8 27.Qc6 cd4 28.Qa4-+) 27.Nd6 f5 28.ef5 gf5 (28...Nf5 29.Nf7 Rf7 30.Qf7-+) 29.Nf7 Rf7! 30.Qf7 e4 31.g4 (31.Rc1 d3-+) 31...d3 32.gf5 Ng8 (better 32...Qg8 33.Qe6 Bd4 34.Kf1-+) 33.Qe6 (33.Kh1-+) 33...Qg5 34.Kf1 Qg4 35.Rb1 (35.Rd2 Qf4 36.Ra2-+) 35...Qe2 36.Kg1 Bd4 37.Rf1 d2 38.f6 (38.Qf6 Nf6 39.h4 Qg4 40.Kh1 Qh3 41.Kg1 Ng4 42.Rd1 Bf2) 38...d1Q 39.Rd1 (39.Qg8 Kg8 40.f7 Kf7 41.Rd1 Qf2 42.Kh1 Qf3) 39...Qf2 40.Kh1 Qf3 0-1. bjoernsen (2380) - Gnejak (2245), Rated Blitz game, lichess.org, 2016.

6.Qd1 c5 7.Nf3 b6 (7...Ne7 8.c4 Be6 9.h4=) 8.d3 (8.c4 Ne7 9.cd5 Nd5+/-) 8...Bb7 (8...Ne7 9.Be2+=) 9.Nbd2 (9.g3 Ne7=) 9...Bd6 (9...Ne7 10.h4=) 10.e4 Ne7 11.c3 (11.ed5 Nd5 12.c4 Nc7+=) 11...0-0 12.Qb3 (12.c4 d4=) 12...Kg7 (12...f5 13.Ng5 Qd7 14.ed5-/+) 13.h4 (13.c4 d4=) 13...h5 (13...c4 14.Qc2=) 14.Be2 (14.c4 d4=) 14...Nd7 (better 14...c4 15.Qc2 cd3 16.Bd3 f5=+) 15.Rg1?? (better 15.Qc2!?=) 15...a4 (better 15...c4 16.Qc2 cd3 17.Bd3 Nc5-+) 16.Qc2-/+ a3 17.Bc1 c4 18.g4 (better 18.d4!? Qc7 19.g4 hg4 20.Rg4 de4 21.Ne4-/+) 18...cd3-+ 19.Bd3 hg4 20.Rg4 Nc5 21.h5 de4 (21...Qd7!? 22.Rg3 Rh8 23.ed5 Nd3 24.Qd3 Rh5-+) 22.Be4-/+ (22.Ne4? f5 23.Nc5 Bc5-+ (worse 23...bc5 24.Ng5 Rf6 25.h6 Kh8 26.Rh4+=)) 22...Ne4 23.Ne4 f5 (better 23...Be4 24.h6 Kh7 25.Re4 Bc5-/+) 24.h6?? (24.Qd2 Be4 (24...fg4 25.Qh6 Kf7 26.hg6 Ng6 27.Nfg5 Ke8 28.Qg6 Kd7 29.Be3+-; 24...fe4?! 25.Rg6 Ng6 26.Qh6 Kg8 27.Qg6 Kh8 28.Qh6 Kg8 29.Qg6 Kh8 30.Qh6 Kg8 31.Qg6=) 25.Rg6 Ng6 26.Qh6 Kg8 27.Qg6 Kh8 28.Qh6 Kg8 29.Qg6 Kh8 30.Qh6 Kg8 31.Qg6=) 24...Kh7 (better 24...Kh8 25.Nd6 fg4 (25...Bf3?! 26.Rg3=+; 25...Qd6?! 26.Rg3-+) 26.Nb7 Qd5-+) 25.Neg5=+ Kh8 26.Rg1 (better 26.Rh4 Bf3 27.Nf3=+) 26...Bc5?? (better 26...Bd5-/+) 27.Ne5+- Qe8 28.f4?? (better 28.Qe2 Nd5 29.Ne6+/-) 28...Bg1-+ 29.Ke2 (29.Ne6 Qc8 (29...Qb5 30.Ba3 Ra3 31.Nf8-+) 30.Nf8 Qf8-+) 29...Bc5 (29...Qb5 30.Qd3 Qd3 31.Kd3-+) 30.Bd2 (30.Qd3 Rf6-+) 30...Nd5 (better 30...Ng8 31.Kf1 Nh6 32.Re1-+) 31.Rf1 (31.Re1 Nf6 (31...Qb5?! 32.c4 Qb2 33.Qb2 ab2 34.cd5=) 32.Qd3 Be4-+) 31...Qe7 (better 31...Bd6 32.Re1 Nf4 33.Bf4 Be5-+) 32.c4 Nb4 (better 32...Bd4!? 33.cd5 Be5 34.fe5 Qe5 35.Kf2 Qh2 36.Ke1 Rfe8 37.Ne6 Qg3 38.Kd1-+) 33.Qc3 Na2 (33...Rf6 34.Kd1 Kg8 35.Ng6=+) 34.Qa1 Nb4?? (34...Bd6 35.Be3 Be5 36.fe5 Kg8-/+) 35.Be3 (better 35.Kd1 Kg8 36.h7 Qh7 37.Nh7 Kh7 38.Nd7+-) 35...Be3?? (better 35...Kg8 36.h7 Kg7 37.h8Q Rh8 38.Nc6 Qf6 39.Ne6 Kf7 40.Ng5 Kg7 41.Ne6 Kf7 42.Ng5 Kg7=) 36.Nef7 Kg8 37.Qg7 1-0. bjoernsen (2265) - mederes2 (2265), Rated Blitz game, lichess.org, 2017.

4.e3 a6

5.a4 Bb4 6.c3 Bd6 7.c4 Ne7 (7...ab5 8.cd5 ba4 9.Ra4 Ra4 10.Qa4 c6 11.dc6 Nc6 12.Bc4=+) 8.Qh5 g6 9.Qf3 Bf5 (9...ab5 10.cd5 ba4 11.Bb5 Bd7 12.Qf6–/+) 10.Nc3 (10.g4 e4 11.Qh3 Be6 12.Bf6 0-0 13.cd5 Rf6 14.de6 A) < 14...Re6 15.Bc4 Qd7 16.ba6 Na6 17.f4+- (17.Be6?! Qe6 18.g5 Nf5+=); B) 14...ab5 15.Bb5 c6= (15...Re6? 16.Bc4 Qd7 17.Qg2+-)) 10...ab5=+ 11.ab5 Ra1 12.Ba1 c6 (12...e4 13.Qd1 dc4 14.g4=) 13.Bb2 (13.cd5 Qa5 14.Bb2 Qb4=+) 13...e4 14.Qd1 Nd7 15.cd5 cd5 16.Nge2 Bg4 17.Qc2 Nc5 (17...Nb6 18.d3 ed3 19.Qd3=+) 18.Nd4= 0-0 19.h3 Bc8 20.Be2 f5 21.d3 Ne6 22.Ne6 Be6 23.0-0 Bb8 24.g3 Qd7= 25.Rd1 Bd6 26.de4 fe4 27.Qd2 Rd8 28.Qd4 Nf5 29.Qf6 d4 30.Ne4+- Be7 31.g4?? Rf8? 32.Qe5+- Qd5 33.Qd5 Bd5 34.gf5 Be4 35.Bc4 Kg7 36.Rd4 Bf6 37.Rd7 Kh6 38.Bf6 Rf6 39.fg6 Rg6 40.Kf1 Rg5 41.f4 Rg7 42.Rg7 Kg7 43.Ke2 Bf5 44.h4 Bg4 45.Kd3 b6 46.e4 h6 47.Ke3 Kf6 48.e5 Kg7 49.Bd3 Be6 50.Kd4 Bg4 51.Kd5 Kf7 52.f5 Ke7 53.Kc6 Bf3 54.Kb6 Bd5 55.Kc5 Bf3 56.f6 Kf7 57.b6 Bg2 58.Bc4 Kg6 59.f7 Kg7 60.e6 Kf8 61.Kd6 Bd5 62.Bd5 Kg7 63.e7+- Kg6 64.f8Q Kh5 65.Qf4 Kg6 66.Qf7# 1–0. poodledough – gottawinsky, ICC, 2002.

5.a4 b6 6.c4 (6.Nf3 Bd6=) 6...Bb7 (6...c6 7.cd5 Qd5 8.Nc3=) 7.Nf3 (7.cd5 Bd5 8.Nc3 Be6=) 7...Bd6 8.cd5 Bd5 9.Nc3 Bb7 10.Bc4 Ne7 (10...ab5 11.ab5 Ra1 12.Ba1+=) 11.0-0 Ng6 (11...ab5 12.ab5 Ra1 13.Ba1+=) 12.Qb3 (12.d4 ab5 13.ab5 Ra1 14.Ba1 e4+=) 12...Rf8 (12...Bf3 13.gf3 c6 14.Rfc1=) 13.Nd5 (13.e4 c6+=) 13...Nd7 (13...Ne7 14.Rfc1+=) 14.d4+/– e4 15.Nd2 f5 16.f3 (better is 16.Rfc1+=) 16...Ne7? (better is 16...ef3!? 17.Nf3 Nh4+=) 17.fe4+- Nd5 (17...ab5 18.ab5 Ra1 19.Ra1 (19.Ba1?! fe4 20.Rf8 Kf8 21.Ne7 Qe7+=) 19...fe4 20.Ne4 Nd5 21.Bd5+-) 18.Bd5 (18.ed5?! Qh4 19.g3 Qe7+/–) 18...Bd5 19.Qd5 (19.ed5?! ab5 20.ab5 Ra1 21.Ra1 Nf6+/–) 19...Nf6 (19...ab5 20.ab5 Ra5 21.Nc4 (21.ef5?! Nf6 22.Qc4 Qd7+-; 21.Rf5?! Ra1 22.Ba1 Rf5 23.Qf5 Qh4 24.Qe6 Qe7 25.Qg8 Nf8+-) 21...Ra1 22.Ra1+- (22.Ba1?! fe4 23.Qe4 Qe7 24.Qa8 Qd8 25.Rf8 Nf8 26.Qd8 Kd8+-; worse is 22.Nd6 cd6 23.Ra1 Qc7+-)) 20.Qf5 (20.Qc6 Nd7+-) 20...Qd7 21.e5 Qf5 22.Rf5 Bb4 (22...Nd5 23.e4 Rf5 24.ef5+- (24.ed5?! Bb4 25.Nc4 Rf8+=)) 23.Nc4 (better is 23.ef6 Bd2 24.Rf2 Bb4 25.fg7 Rg8+-) 23...Nd5 (23...Ne4 24.Rf8 Bf8 25.Kf1+-) 24.Rf8 Kf8 25.Rf1 (25.Rc1 g5+-) 25...Ke7 (25...Ke8 26.Rc1+-) 26.e4 ab5 27.ab5 Nc3 28.Bc3 (better is 28.Ne3!? Ke8 29.Rf3 Ne4 30.Nd5+-) 28...Bc3+/– 29.d5 (29.Rd1 Ra4 30.Ne3+/–) 29...Bd4 (better is 29...Ra4!? 30.Ne3 Be5+=) 30.Kh1+- Bc5 (better is 30...Ra4!? 31.Rc1 Rb4+-) 31.e6 Ra4 32.Rc1 (32.Rf7 Kd8 33.Nd2 Ra1 34.Rf1 Ra5+-) 32...Rb4 33.g3 Rb5 (33...h5 34.h3+-) 34.Rf1 Rb4 35.Rf7 Ke8 (35...Kd8 36.Ne5 Re4 37.Nc6 Kc8 38.Rg7+-) 36.Ne5 Re4 37.Nc6 Re1 (37...g6 38.Rc7 Kf8 39.Rh7+-) 38.Kg2 Rd1 (38...g5 39.Rc7 Kf8 40.Rh7 g4+-) 39.Rc7 1–0. GuestJGRC – GuestZCVV, freechess.org, 2016.

5.a4 c6 (--> 4.e3 c6 5.a4 a6).

5.a4 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.a4 a6).

5.a4 Nh6 6.c4 Be6 7.Qb3 Be7 8.Nf3 Nd7 (8...e4 9.Nd4 dc4 10.Bc4+=) 9.d4 (9.cd5 Nc5 10.Qc2 Bd5 11.ba6 ba6+=) 9...Nb6 10.cd5 Bd5 11.Qd1 (11.Qc3 e4 12.Nfd2 ab5+=) 11...Nc4 (11...e4!? 12.Nfd2 ab5 13.Qh5 Nf7 14.Bb5 c6+=) 12.Bc4= Bc4 13.Nbd2 Bb4 (13...ab5 14.de5 f5 15.ab5 Bb5 16.Ra8 Qa8 17.Nd4+/–) 14.de5 Qd3 (better is 14...Ng4!?=) 15.ef6+/– 0-0-0 (15...gf6 16.Bf6 0-0 17.Bg5+=) 16.Bd4 (16.ba6 ba6 17.fg7 Rhg8+-) 16...Rhe8 (16...gf6 17.ba6 ba6 18.Bf6 Ng4+=) 17.Rc1 (17.ba6 Bd2 18.Qd2 gf6 19.Qd3 Bd3 20.a7+- (worse is 20.Bf6 Rd6 21.a7 Kd7+-)) 17...Rd4+/– 18.Nd4 Qd4 19.Rc4 (19.Qc2 gf6 20.Qc4 Bd2 21.Ke2 Re3 22.fe3 Qe3 23.Kd1 Bc1 24.Qc1 Qd4 25.Ke2 Ng4=) 19...Qc4 (19...Qc4 20.f7 Nf7 21.ba6 ba6–+) 0–1. Holz auf der Heide,Gerhard – Sojka,Vaclav, CiF, 1991.

5.ba6 Na6 6.Ba6 Ra6-/+ 7.Be5?? (better 7.Nc3-/+) 7...fe5-+ 8.Qh5 Rg6 9.Qe5 Be7 10.g3 (10.Ne2 Rg2 11.Nbc3 Rg5-+) 10...Nf6 11.h3 (11.Nc3 0-0 12.Nge2 c5-+) 11...0-0 12.Ne2 Ne4 13.Nf4 Rf4! 14.gf4 (14.ef4 Bf6 Combination; 14.Qf4 Rf6 Decoy; 14.gf4 Bf6 Combination) 14…Bf6 (14...Bf6 15.Qh5 Ba1-+) 0-1. Darkseid (1890) - michaelbuss (2865), ChessWorld.net, 2017.

5.c4 ab5 6.cb5 Bf5 7.f4 Bd6 8.Qb3 Be6 9.Nf3 e4 10.Nd4 Qe7 11.Ne6 Qe6= 12.Be2 Nd7 13.0-0 Nc5 14.Qd1 Nh6 15.Nc3 0-0 16.a4 b6 17.Qe1 Nf5 18.g4 Ne7 19.Qg3 Qf7 20.h4 Qe8 21.g5 fg5 22.hg5 Qg6 23.Kg2 Nf5 24.Qg4 h5 25.gh6= Qg4 26.Bg4 gh6? 27.Nd5+/– Nh4 28.Kh3+- Nf3 29.Bf3 ef3 30.Rf3 Ne4 31.Rg1 Kh7 32.Rg7 Kh8 33.Re7 Kg8 34.Re4 Rf7 35.Rg3 Kf8 36.Re6 Re8 37.Rh6 Ree7 38.Nf6 Rf6 39.Rf6 Ke8 40.Rg8 Kd7 41.Rff8 Ke6 42.Re8 Re8 43.Re8 Kd5 44.d3 1–0. elsh1403 – bonza, internet, 2011.

5.d4 c5 6.de5+= Be7 (6...c4 7.ba6 (7.e4 Be6 8.ed5 Bd5 9.Nc3 Bb4 10.Qd4+/–; 7.Nc3 Bb4 8.ba6 Ra6 9.Nf3 Nc6 10.a3+=; 7.a4 Bb4 8.Bc3 Qa5 9.Qd2 Bc3 10.Nc3+=; 7.ef6 Nf6 8.ba6 Na6 9.Be5 Bd6 10.Bd6=) 7...Qa5 8.Bc3 Bb4 9.Qd2 Na6 10.a3+/–) 7.ba6 (7.Bd3 ab5 8.Qh5 Kf8 9.Bb5 Nc6 10.Bc6+=; 7.Nf3 c4 8.ba6 Ra6 9.Be2 Nc6 10.0-0+/–; 7.Nh3 fe5 8.Qh5 Kf8 9.Be5 Bf6 10.Ng1+=; 7.a4 c4 8.Nd2 ab5 9.ab5 Ra1 10.Qa1+/–) 7...Na6 8.Nf3 (8.Bb5 Bd7 9.Bd7 Qd7 10.Nf3+=) 8...fe5 (8...Qb6!? 9.Bc3 Nc7+/– 10.Bd3+/–) 9.Bb5 (9.Ne5 Bf6 10.Bb5+/–) 9...Bd7 (9...Kf8 10.Ne5+/–) 10.a4 (10.Bd7 Qd7 11.Ne5 Qb5 12.Qh5 g6 13.Ng6 Qb2 14.Nh8 Kd7 15.Qd5 Kc7=) 10...d4 (10...Nc7 11.Ne5 Nb5 12.Qh5 g6 13.Ng6 Nf6 14.Bf6 Bf6 15.Nh8 Ke7 16.Qh7 Ke6 17.Qh3 Kd6 18.Nf7 Ke7 19.Nd8 Bh3 20.Nb7 Ba1 21.ab5 Bg2+-) 11.Ne5+- Bb5 12.ab5 Nb4 13.Ra8 (13.ed4 Ra1 14.Ba1 Nf6+-) 13...Qa8 14.Qh5 (14.0-0 Qa2 15.Qg4 Nf6 16.Qc8 Bd8 17.ed4 Nc2+-) 14...g6 15.Qh3 Nf6 16.0-0 Nbd5 (16...Qa2 17.Qc8 Bd8 18.ed4 Qb2 19.Qe6 Be7 20.Re1 Qd4 21.Ng6+-) 17.c4 (17.Ng6 Rg8 18.Ne7 Ke7 19.ed4 c4+-) 17...Nb6 (17...dc3 18.Ng6! cb2 19.Nh8+-) 18.Qe6 (18.ed4 Rf8+-) 18...Nbd7 (18...Na4 19.Ba3 Qb8 20.ed4+-) 19.Nd7 Nd7 20.ed4 cd4 (20...Rf8 21.Nc3 Qd8+-) 21.Re1 Qd8 22.Ba3 (22.Ba3 Ne5 23.Re5+-) 1–0. pcmvr (2745) – jparkinson (2415), net–chess.com, 2007.

5.Nf3 ab5 6.Bb5 c6 7.Be2 Bg4 8.0-0 Nd7 9.h3 Bh5 10.Nd4 Be2 (< 10...ed4 11.Bh5 g6 A) < 12.ed4 Qb6–/+ (12...gh5 13.Qh5 Ke7 14.Ba3 Ra3 15.Re1 Kd6 16.Na3+/–); B) 12.Bg4+=) 11.Ne2 Bd6 12.d4 Ne7 13.Nd2 0-0 14.c4 e4 15.c5 Bc7 16.f3 f5 17.g4 ef3 18.Rf3 fg4 19.Rf8 Qf8 20.hg4 Qf3?? (better is 20...Qf6 21.Nc3 Qg5–+) 21.Nf4 (better is 21.Nf3 Nf6 22.g5+-) 21...Qe3–+ 22.Kg2 Bf4 23.Nf3 Ng6 24.Bc1 Nh4! 25.Kh3 Qf3 26.Qf3 Nf3 27.Bf4 Nd4 28.Bd6 Re8 29.Rf1 Ne6 30.Kh4 Nec5 31.Rb1 b5 32.Rc1 Ne4 33.Rc6 Nd6 34.Rd6 Nf6 35.Rb6 Re4 36.Rb5 Rg4 37.Kh3 Ra4 38.Rb8 Kf7 39.Rb7 Kg6 40.Rb2 Ne4 41.Kg4 Kf6 42.Kf4 g5 43.Ke3 Ke5 44.Kd3 Ra3 45.Ke2 Ra2! 46.Ra2 Nc3 47.Kf3 Na2 48.Kg4 d4 49.Kg5 d3 50.Kh6 d2 (51.Kh5 d1Q 52.Kh6 Kf6 53.Kh7 Qd7 54.Kh6 Qh3#) 0–1. revbodio2 – procyk, Live Game Caissa's Web, 2004.

5.a4 ab5

6.ab5 Ra1

7.Ba1 c5 8.c4 d4 9.Bd3 Qa5 (9...f5 10.ed4 ed4 11.Qf3=) 10.Bb2 Ne7 11.Ne2 b6 (11...f5 12.f3=) 12.0-0+= Bb7 (12...f5 13.Ng3+=) 13.ed4 cd4 14.Qc2 g6 15.f4 (15.Ng3 Nd7+=) 15...Bg7 (better 15...Qa8!? 16.fe5 fe5=) 16.Ba3 Nd7 17.fe5 fe5 18.Be4 (18.Be7 Ke7 19.Bg6 Bf6 20.Bh7 Qa8+-) 18...Qa8 19.Ng3 Nf6 20.Bb7 Qb7 21.c5 bc5 22.Qc5 Nfd5 23.Ne4 Qc7 (23...Qb6!?+-) 24.Qc7 Nc7 25.Nd6 Kd7 26.Rf7 Bh6 27.b6 Ncd5 28.b7 Ke6?? (better 28...Rb8+-) 29.Rh7!!+- (29.Rh7 Rb8 30.Rh6+-) 1–0. onur604 (2315) – Time_trouble_maker (2030), lichess.org, 2020.

7.Ba1 c5 8.c4 d4 9.Nf3 Bg4 (9...Qa5 10.Bb2 e4 11.Ng1+=) 10.Bd3 Nh6 (10...f5 11.Qc2 Bf3 12.gf3+=) 11.h3 (11.Be4=) 11...Bf3 (11...Bf5!? 12.Bf5 Nf5 13.ed4 cd4=) 12.Qf3+= (worse is 12.gf3 f5+=) 12...de3 13.Qe3 Bd6 (13...Nf7 14.0-0+=) 14.Be4+/– Qc7 (14...Qd7!?+/–) 15.Qd3 g6 (15...Nf7+/–) 16.Qd5 (16.Qf3 Nd7+-) 16...f5 (16...b6!?+/–) 17.Qe6+- Be7?? (better is 17...Qe7 18.Qc8 Qd8 19.Qd8 Kd8 20.Bb7 Re8+-) 18.Be5 (18.Be5 Qd7 19.Bd5 Qe6 20.Be6+-; 18.Qe5?! Qe5 19.Be5 fe4 20.Bh8 Nf7+-) 1–0. GuestXHBX – GuestJVQB, freechess.org, 2016.

7.Ba1 c5 8.d4 cd4 9.ed4 Qa5 10.Bc3 Bb4 11.Qd2 Qa2 12.Qc1 Bc3 13.Nc3 Qa5 14.Qd2 Be6 15.Nd1 Qd2 16.Kd2 Nd7 (worse is 16...ed4 17.Nf3+/–) 17.Ne2 Nh6 18.f4 e4 19.Ne3 Nb6 20.Nc3 Kd7 21.Be2 Ra8 22.g4 f5 23.h3 Kd6 24.Rg1 ½–½. Belov,Pavel Ilich (2140) – Gusynin,Igor Petrovich, RUS/TC6/Final (RUS), 2012.

7.Ba1 Bd7 8.Nc3 c6 9.Nf3 Bd6 10.bc6 Bc6 (10...bc6 11.Be2+=) 11.Bb5 Ne7 12.0-0 g5 (12...Qc7 13.Bc6 bc6 14.e4=) 13.d4 e4 14.Nd2 h5 15.f3 Nf5 (better is 15...ef3 16.Qf3 f5=) 16.fe4 (better is 16.Qe2 ef3 17.Qf3+/–) 16...Ne3+= 17.Bc6 (17.Qe1!? Nf1 18.ed5 Qe7 19.Qf1 Qe3 20.Kh1 Qd2 21.dc6 bc6 22.Ne4+=) 17...Nc6–/+ 18.Qf3 Nf1 19.Qf1 de4 (19...Bf4 20.Nd5 Bd2 21.Nf6 Kf7 22.d5 Qb6 23.Kh1–/+) 20.Nde4 Be7 21.d5 Qb6 (better is 21...Nb4 22.d6 Bd6=) 22.Kh1+/– Ne5 (22...Nd4 23.d6 Qa6 (23...Bd6? 24.Nd5 Qa6 25.Ndf6 Kd8 26.Qa6 ba6 27.Nd6 Nc2 28.Nf7 Ke7 29.Nh8 Na1 30.Nh5+-) 24.Qa6 ba6 25.de7 Nc2=) 23.Nb5 White prepares the advance d6 (23.d6 Bd6 24.Nd5+=) 23...Ng4 (better is 23...0-0!?=) 24.Bd4+/– The pressure on the backward pawn f6 grows 24...Qa5 25.c4 (better is 25.h3!? Rh6 26.d6+-) 25...0-0+= 26.h3 Ne5 27.d6 Bd8 28.c5 Nc6 (28...Qb4 29.Nec3=) 29.Qc4 (worse is 29.Bf6 Bf6 30.Nf6 Kh8=; worse is 29.Nf6 Bf6 30.Bf6 Qa2–/+) 29...Kg7 (better is 29...Kh7!? 30.Bc3 Qa6+=) 30.Bc3 Ne5 31.Qf1 (31.Qe2 Qa4 32.Ng5 Qb3+-) 31...Qa4 32.Ng5 fg5 33.Be5 Bf6 34.Bf6 (34.Qe2!? Be5 35.Qe5 Kg6 36.Nd4+/–) 34...Rf6= 35.Qb1?? (35.Qe2 Qf4 36.Nc7 Qf1 37.Qf1 Rf1 38.Kh2–+) 35...Qc4–/+ 36.d7?? (better is 36.Qb2 Qc5 37.d7–/+) 36...Rf1–+ 37.Qf1 Qf1 38.Kh2 Qf4 (38...Qf6 39.Nd6 Qd8 40.Ne4–+) 39.Kh1 Qf8 40.Nd6 Qd8 41.Nb7 (41.Ne4 Qd7 42.Ng5 Qe7–+) 41...Qd7 0–1. Anderson,George – Liebzeit,Mick, Winnipeg TNT Sept op, 2004.

7.Ba1 Bd7 8.c4 Ne7 9.cd5 Nd5 10.Nc3 (10.d4 Bb4 11.Nd2 Bd2 12.Qd2 e4=) 10...Nc3 (10...Be6 11.Qb3=) 11.Bc3 Bc5 (11...Be6 12.Nf3=) 12.Qh5 (12.f4 Bd6 13.fe5 fe5 14.Be5 Be6+=) 12...g6= 13.Qf3 (13.Qh4 Bf5=) 13...c6 14.Nh3 0-0 15.Bc4 Kg7 16.0-0 cb5 17.Bb3 Bc6 18.Qe2 h6 19.f4 ef4?? (better is 19...b4 20.Bb2 Bd5 21.Bd5 Qd5=) 20.Nf4+- (20.Rf4?! Bd7=) 20...Bd7 21.Be6 (better is 21.Bc2 b4 22.Nh5 gh5 23.Qd3+-) 21...Nc6?? (better is 21...Qe8 22.Bd7 Qd7+=) 22.Qb5 (22.Qg4! Be8 23.Bf6 Rf6 24.Nh5 Kh8 25.Nf6 Bf8+-) 22...Bd6 23.Qb7 Bf4 24.Rf4 (24.Qd7?! Qd7 25.Bd7 Nb8+-; 24.Bd7?! Nb8 25.Be6 Qc7 26.Qc7 Bc7+-) 24...Ne5 (24...Nb8+-) 25.Be5 fe5 26.Rf8 Kf8 27.Qd7 Qd7 28.Bd7 1–0. GuestMPBT – STBV, freechess.org, 2017.

7.Ba1 Nd7 8.c4 dc4 9.Bc4 Nb6 10.Be2 Be6 11.Nf3 Ne7 12.0-0 Nf5 (12...Ned5 13.Nc3=) 13.Qc2 Bd6 (13...Nd5 14.Rc1=) 14.Rc1 (14.d4 ed4 15.Bd3 Qd7+=) 14...0-0 (14...g5 15.d4 g4 16.Ne1+=) 15.d3 (15.d4 ed4 16.Bd3 g6+=) 15...g5 (15...Qd7 16.d4 Ra8 17.de5 Ra1 18.ed6 Nd6 19.Bd3=) 16.Nbd2 Qe8 17.Rb1 (17.Ne4 Qb5 18.Nd6 Nd6+=) 17...g4= 18.Ne1 Qg6 19.Nc4 Nc4 20.dc4 Bc5 21.Bd3 Qg5 22.Qe2 Nh4 (22...Nd6 23.Qc2=) 23.Nc2 (23.Rd1 Nf5+=) 23...Nf3 (23...Bf5 24.Bf5 Qf5 25.Rd1+=) 24.Kh1 Qh5? (better 24...Nh4+=) 25.gf3+- gf3 26.Rg1 Kh8 27.Qf1 (better 27.Qd1+-) 27...Bh3+= 28.Qe1 Bg2 (28...Rd8 29.Qd2 Bg2 30.Rg2 fg2 31.Kg1=) 29.Rg2 fg2 30.Kg1 Rg8 (30...Rd8 31.Be2 Qf5 32.Qc1+=) 31.Be2 (31.Be4!?+/-) 31...Qh3 32.Bd1 (32.Bd1 Rg6 33.f4 ef4 34.Bf6 Rf6 35.Qc3-+) 1-0. ClayPigeons (2090) - NikitaStepanov (1990), Rated Bullet game, lichess.org, 2020.

7.Ba1 c6

8.c4 Qa5 9.Bc3 Qa2 10.Nf3 Bd6 (better 10...dc4!? 11.bc6 Nc6-/+) 11.cd5 cd5 12.Be2 Ne7 13.0-0 (13.d4 Bf5 14.de5 Bc2=) 13...0-0 (13...Bf5 14.d3=) 14.d3 (14.d4 e4 15.Ne1 Be6=) 14...Be6 (14...Bf5 15.Bd2=) 15.Nfd2 (15.d4 e4 16.Nfd2 Nd7=+) 15...Nd7 16.d4 e4 17.f3 (17.Qe1 Rc8=+) 17...f5 (17...Nf5 18.Kf2 Bh2 19.fe4-/+) 18.fe4 (18.Rf2 Nf6 19.g3 Ng6=) 18...fe4 (18...de4 19.Qe1=+) 19.Rf8 Kf8 20.Qf1 Nf6 21.h3 (21.Bd1 Kg8-/+) 21...Qc2 (better 21...Nf5!?-+) 22.g4=+ h6 23.Kf2 g5 24.Kg2 Kg7 25.Bd1 Qa2 26.Bb3 Qa8 27.Bb2 Qb8 (27...h5 28.Nc3 hg4 29.Nce4 gh3 30.Kg1=+) 28.Nc3 Bh2 (28...Bd7 29.Qc1=+) 29.Qf2 (29.Nde4 de4 30.Be6 Qg3 31.Kh1 Bg1+/-) 29...Ng6?? (better 29...Bd7=) 30.Nce4!+- Nh4 (30...de4 31.Be6 Pinning (31.Be6 Deflection); 30...Ne4 31.Ne4 Combination) 31.Kh1 Ne4 (31...de4 32.Be6 Bg3+-) 32.Ne4 de4 33.Be6 Nf3 34.d5 (34.Qc2 h5 35.Qc5+- (35.Qe4?! Qg3 36.Qb1 Bg1 37.d5 Kh6 38.Bg7 Kg7 39.Qa1 Ne5 40.Qg1 Qh3 41.Qh2 Qf3 42.Qg2 hg4=)) 34...Kg6?? (better 34...Be5+-) 35.Bf5 Kf7 36.Be4 (36.Be4 Qg3 37.Qf3 Qf3 38.Bf3+-) 1-0. zembelek (2160) - amayak (2210), Rated Blitz game, lichess.org, 2013.

8.c4 Bb4 9.Qb3 Qa5 10.Bb2 (10.Bc3 Bc3 11.Nc3 Qa1 12.Nd1 d4=) 10...Be6 11.Nf3 Ne7 12.Be2 (12.Bc3 Bc3 13.Nc3 Qa1 14.Nd1 Nd7=+) 12...0-0 (12...dc4 13.Bc4 Bc4 14.Qc4 cb5 15.Qe6=+) 13.0-0 Nd7 14.cd5 cd5 (14...Bd5 15.Qc2=+) 15.Bc3= Bc3 16.Qc3 Qa4 (16...Ra8 17.d4=) 17.Qc7 b6 18.Qd6 Kf7 19.Nc3 Qc2 20.Ra1 Nf5 21.Nd5?? (better 21.Qa3 d4 22.Nd1=) 21…Nd6–+ (21...Nd6 22.Nc3 Bc4–+) 0–1. aravind555 (1825) – rilton2002 (1815), lichess.org, 2020.

8.c4 Bb4 9.Nf3 Nh6 (9...Be6 10.Qb3 c5 11.Bc3 Bc3 12.dc3=) 10.Be2 0-0 11.0-0 Kh8 (11...Be6 12.Qb3 Bd6 13.Nc3=) 12.Qb3 Be7 13.d4 Bd7? (better 13...e4!? 14.Nfd2 Bg4 15.Bg4 Ng4+=) 14.de5 fe5 (14...dc4 15.Bc4 cb5 16.Bb5 Bb5 17.Qb5+-) 15.Ne5 Bf6 (15...Be6 16.Rd1+-) 16.Nd2 (16.cd5 Bf5+-) 16...Be5 (16...dc4 17.Bc4 cb5 18.Bd3+-) 17.Be5+- Rf5? (17...dc4 18.Qc3 Qe7 19.b6+- (worse 19.Bc4 cb5 20.Bd5 Nc6+-)) 18.Bg3 (better 18.Qb2 Rf7 19.Ra1+-) 18...Qg5?? (better 18...dc4 19.Bc4 cb5+-) 19.Nf3 (19.Bb8 dc4 20.Bc4 cb5+-) 19...Rf3 (19...Qd8 20.cd5 cb5+-) 20.Bf3 (worse 20.gf3 cb5 21.cd5 Na6+-; 20.Bb8?! dc4 21.Qd1 Rf7 22.Bc4 Re7+-) 20...Ng4 (20...Qd8 21.bc6 Nc6 22.Qb7+-) 21.cd5 cd5 (21...Ne5 22.Be2 Qe7 23.Qc3+-) 22.Qd5 (better 22.Ra1 Ne5 23.Bd5 Bc8+-) 22...h6 (22...Qd5 23.Bd5 Bb5 24.Ra1+-) 23.Qg5 hg5 24.Bb8 Kh7 (24...Bb5 25.Bg4 Bf1 26.Kf1+-) 25.Bg4 (better 25.b6 Bf5+-) 25...Bg4 26.Bg3 (26.Rc1 Be2 27.b6 Kg6+-) 26...Bh5 (26...Be2 27.Rb1+-) 27.Rc1 Bg6 (27...Be2 28.b6 Ba6 29.Rc7+-) 28.b6 (28.Rc7 b6 29.Be5 Be4+-) 28...Bf7 (28...g4 29.f3 gf3 30.gf3+-) 29.Rc7 Bc4 30.Be5 (better 30.Rc4 Kg6+-) 30...Be6 31.Rg7 (31.Rb7!? Kh6+-) 31...Kh6 32.h3 Kh5 33.g4 Kh4 34.Kh2 (34.Rh7) 34...Bg4 35.Rh7 Bh5 36.Bg3 1–0. BeepBeepImAJeep (2655) – j0e (1625), lichess.org, 2017.

8.c4 c5 9.Qc2 (9.Nc3 d4 10.ed4 cd4+=) 9...Nh6 (9...Ne7 10.d4 Bf5 11.Bd3 Bd3 12.Qd3 cd4 13.ed4+=) 10.d3 (10.cd5 Qd5 11.e4 Qd6=) 10...d4+= 11.Qd2 Bd6 12.g3 (12.Be2 de3 13.fe3 Bf5=) 12...0-0 13.Bg2 Re8 (13...Bc7 14.Bd5 Nf7 15.Qe2+=) 14.Ne2 (14.Bd5 Nf7=) 14...Ng4 (14...de3 15.fe3 Nf5 16.0-0+=) 15.0-0 b6 16.Bd5 Be6 17.e4 (17.Be6 Re6 18.h3 Nh6=) 17...Bd5+= 18.cd5 The passed pawn on d5 quickly leads to threats 18...Qd7 19.Qb2 Nh6 (19...f5 20.Nd2–/+) 20.Na3 Qh3 The mate threat is Ng4 21.f3 f5 22.Nc4 Bc7 23.Qa2 White launches an attack 23...f4 (better is 23...fe4!? 24.fe4 Ng4=) 24.d6 (24.gf4 ef4 25.d6 Bd6 26.Nd6 Qe6+-) 24...fg3 25.Ng3 Bd8 26.Ne5 The passed pawn on e4 quickly leads to threats 26...Kf8 (better is 26...Kh8!? 27.Nf7 Nf7 28.Qf7 Rg8+/–) 27.f4+- Qe6 (27...Bf6 28.Qa7 Be5 29.fe5 Kg8 30.Bb2+/– (30.Qb6 Ng4 31.Rf2 Nd7–/+)) 28.Qe6 (better is 28.Qa7!? Bh4 29.Qb6 Bg3 30.Qc5 Bh2 31.Kh2+-) 28...Re6+/– 29.Nc4 Ng4 30.e5 Rh6 (30...Nd7 31.Re1+-) 31.Nf5 Rh2 32.e6 Bf6 33.Nb6 (33.Ne5 Be5 34.fe5 h5 35.e7 Kf7 36.e6 Kf6+-) 33...g6 (33...Re2 34.e7 Ke8 35.Ng3+-) 34.Nd5 White intends e7 (better is 34.e7 Ke8 35.Nd5 Re2+-) 34...Rh3? (34...Re2 35.e7 Kf7+-) 35.e7 (35.Nf6 Nf6 36.d7 Nbd7 37.ed7 Nd7 38.Nd4 cd4+=) 35...Ke8 (35...Kf7 36.Nc7 Be7 37.de7 Nf6+-) 36.Nc7 1–0. Mess,Jan Peter – Draasch,Heiko, Schleswig Holstein–ch, 1991.

8.c4 Bd6 9.Nf3 Ne7 10.d4 e4 11.Nfd2 0-0? (11...Bc7 12.Be2=) 12.Nc3 (12.c5 Bc7 13.b6 Bb6 14.cb6 Qb6+/-) 12...f5? (12...Bc7 13.Be2=) 13.g3 (13.c5 Bc7 14.b6 Bb6 15.cb6 Qb6+/-) 13...Be6 (13...Bb4 14.Qa4 Ba5 15.Be2=) 14.Qb3 (better 14.c5!?+/-) 14...Qd7 (14...Qa5 15.Qb2=+) 15.Be2 (15.c5 Bc7=) 15...g5 Black prepares f4 (15...dc4!? 16.Bc4 Bc4 17.Qc4 Kh8=) 16.h4 f4 (16...g4 17.c5 Bc7 18.0-0+=) 17.hg5 (17.gf4!? gf4 18.Rg1 Kf7 19.Bh5 Ng6 20.cd5 cd5 21.Kd1=) 17...fe3 18.fe3 Bg3 19.Kd1 Bf2 20.cd5 (20.bc6 Nbc6 21.Nf1 Ne5=) 20...cd5 (20...Nd5 21.Nd5 Bd5 22.Qa3=+) 21.Na4 (21.Nf1 Ng6=) 21...Bg4=+ 22.Nc5?? (better 22.Nc3 Kg7 23.Rf1=+) 22...Be2-+ 23.Kc2 Qg4 (23...Qf5 24.Kb2 Bf3 25.Nf3 Qf3 26.Qd1-+) 24.Bc3 (24.Nce4 Qg2 25.Rb1 Bc4-+) 24...Bd3! 25.Kb2 (25.Nd3 ed3 Double attack (25...Qe2 Decoy; 25...Be3 Zwischenzug; 25...ed3 Passed pawn)) 25...Be3 26.Rh6 (26.Qb4 Bg5 27.Nd3 ed3 28.Qd6-+) 26...Rf2 27.Qd1 (27.Nd3 ed3 28.Rf6-+) 27…Bd2 (27...Bd2 28.Qg4 Be3 29.Ka3 Bc1 30.Kb4 Nec6 31.bc6 Nc6 32.Rc6 bc6 33.Qc8 Rf8 34.Qc6 Bc4 35.Qe6 Rf7 36.Ne4 Kg7+-) 0-1. ClayPigeons (2150) - jessehf (2160), Rated Bullet game, lichess.org, 2020.

8.d4!? Nd7 9.c4 =.

8.Be5 fe5–/+ 9.Qh5 Ke7 10.Qe5 Be6 11.Nf3 Nd7 12.Qf4 (12.Qc3 Ngf6–/+) 12...g6 (12...Qa5 13.Be2–/+) 13.Nd4 c5 (13...Qb6 14.Be2 Ngf6 15.0-0–/+) 14.Ne6+= Ke6 15.c4 (15.e4 Ngf6 16.ed5 Kf7–/+) 15...Bd6 (15...Ngf6!?–/+) 16.cd5+= Ke7 17.Qe4 Kf8 18.Nc3 (18.Qe6 Ndf6+=) 18...Ngf6 (18...Kg7 19.Qc2–/+) 19.Qh4 (19.Qe6 Be5 20.f4 Bc3 21.dc3 Kg7–+) 19...Kg7–/+ 20.Be2 Re8 21.0-0 (21.f4 Nb6–/+) 21...Be5 (21...Nb6 22.Bf3–/+) 22.d4 (22.Qc4 Qa5–/+) 22...cd4 23.ed4 Black gets strong play along the open e–file 23...Bd6 24.g4? (24.Rc1!?–/+) 24...Bb4 (24...Qc7 25.Qh3 Bh2 26.Kg2–+) 25.g5 (25.Na2 Re2 26.Nb4 Re4–+) 25...Bc3 26.Qh6 (26.gf6 Nf6 27.Bf3 Qb6–+) 26...Kh8 27.gf6 Qf6 28.Bg4 Nb6 29.Be6 Bd4 (29...Rd8 30.h4–+) 30.Qd2 Rf8 31.Kg2 (31.h3 Qe5 32.Rd1 Bf2 33.Qf2 Rf2 34.Kf2 Nc4–+) 31...Nc4 (31...Qf3 32.Kg1 Rf4 33.h3–+) 32.Qe2 Nd6 33.f3 (33.f4 Ra8–+) 33...Nf5 (33...Qf4 34.Kh1–+) 34.Bf5 Qf5 35.d6 (35.Qe4 Qg5 36.Kh1 Rf4–+) 35...Rd8 36.Qe7 Qd7 (36...Bf6 37.Qb7 Rd6 38.Kh1–+) 37.Rd1 (37.Rc1 Qd6 38.Qd6 Rd6 39.Rc8 Kg7 40.Rc7 Kh6 41.Rb7 Be5–+) 37...Qd6 38.Qb7 Qc5 (38...Qe5 39.Kh1–+) 39.Qc6 ½–½. Oze,Kristian (1845) – Hoensch,Pal (2075), Berze mem 7th, 1996.

8.Nf3 Bc5 9.bc6 bc6 10.Be2 Ne7 11.0-0 0-0 12.Nc3 Nf5 13.Qb1 Be6=+ 14.Na4 (14.Na4 Bd6 15.c4=+; 14.Rd1 e4 15.Ne1 Qc7=+). AbstractPoetic (1605) – amenno, internet, 2007.

8.c4 Be6

9.Nc3 dc4 10.Qa4 Nd7 11.bc6 Nb6 12.Qb5 bc6 13.Qc6 Bd7+=.

9.bc6 A) 9...Nc6 A1) 10.Qa4 Nge7 (10...Bc5 11.cd5 Bd5 12.Nc3 Be6 13.Nf3 Nge7=; 10...Bb4 11.Bc3 Bd6 12.Nf3 Qb6 13.Qb5 Qb5=; 10...Bd6 11.cd5 Bd5 12.Nc3 Bf7 13.Bc4 Bc4=; 10...dc4 11.Bc4 Bc4 12.Qc4 Nge7 13.Nf3 Qa5+=) 11.c5 Bd7 12.Bb5 b6 13.cb6 Qb6+=; A2) 10.Qb3 Qd7 11.Bc3 d4 12.ed4 ed4 13.Ba1 Bf5+=; A3) 10.cd5 Qd5 (10...Bd5 11.Nc3 Be6 12.Bb5 Bb4 13.Qh5 g6=) 11.Nc3 Qb3 12.Qb3 Bb3 13.Nf3 Bb4=; B) 9...bc6 B1) 10.Nc3 Ne7 (10...dc4 11.Qa4 Ne7 12.Bc4 Nd5 13.Qb3 Nd7=; 10...Nd7 11.cd5 cd5 12.Bb5 Bb4 13.f4 ef4=) 11.cd5 Nd5 12.Nf3 Bd6 13.e4 Nf4+=; B2) 10.Qb3 Nd7 (10...Bd6 11.d4 Ne7 12.c5 Bc7 13.Bd3 Nd7=; 10...Ne7 11.d4 ed4 12.Bd4 Nd7 13.Nf3 c5=; 10...Be7 11.d4 Nd7 12.Nf3 e4 13.Nfd2 f5=; 10...Na6 11.d4 ed4 12.ed4 dc4 13.Bc4 Bc4=) 11.d4 Bd6 12.c5 Bc7 13.Nf3 Ne7+=; B3) 10.cd5 cd5 (10...Bd5 11.Nc3 Be6 12.Nf3 Bb4 13.Qa4 Qd6=; 10...Qd5 11.Nf3 Bb4 12.Nc3 Qa5 13.Bd3 Nd7=) 11.d4 Bb4 12.Bc3 Qa5 13.Qd2 Nc6=.

9.cd5!? Qd5 10.Nc3 Qd8 (10...Qd7 11.Nf3 Bb4 12.Qa4 Qe7 13.d4 Nh6=; 10...Qb3 11.Qb3 Bb3 12.Nf3 Bb4 13.d4 e4=; 10...Qd6 11.Nf3 Qa3 12.Be2 Bb4 13.bc6 Nc6=) 11.Nf3 Bb4 12.Qb1 Qa5 13.Bd3 Ne7=.

9.Nf3 dc4–/+ 10.bc6 (10.Qa4!?–/+ Nd7 11.bc6 Nc5 12.Qb5 bc6 13.Qc6 Bd7+=) 10...Nc6 11.Qa4 (11.d3 Bb4 12.Bc3 Bc3 13.Nc3 b5–/+) 11...Qd5 (11...Qb6 12.Nc3 Qa6 13.Qa6 ba6–/+) 12.Nc3 Qa5 13.Bb2 (13.Qa5 Na5 14.d4 Nb3–/+) 13...Bb4 (better is 13...Qa4!? 14.Na4 b5 15.Nc3–+) 14.Qa5 Na5 15.Be2 Ne7 16.0-0 Nec6 17.Ra1 0-0 18.Ne1 Rd8 19.d3 (19.Rd1 Bf5–+) 19...cd3 (19...b5 20.Kf1–+) 20.Bd3 (20.Nd3 Be7–+) 20...Nb3 21.Rd1 f5 22.Bc2 Kf7?? (better is 22...Rd1 23.Bd1 Nc5–+) 23.Rd8+= Nd8 24.Nd3 (24.Nf3!? Ke7 25.Ne5=) 24...Bc3–/+ 25.Bc3 e4 26.Ne5 Kg8 27.Bb3 (27.g4!? g6 28.gf5 gf5 29.f3–/+) 27...Bb3–/+ 28.Kf1 Ne6 29.f3 g6 (29...b5 30.Ke1–/+) 30.Nd7 (better is 30.fe4 fe4 31.Nd7+=) 30...Bd5?? (better is 30...ef3 31.gf3 Kf7–/+) 31.Nf6+- Kf7 32.Nd5 ef3 33.gf3 g5 34.Be5 h5 35.Kg2 Ke8 (35...Nc5 36.Bd4 Nb3 37.Bc3+-) 36.Nc7 (better is 36.Nf6!? Kf7+-) 36...Nc7 37.Bc7 b5 38.Be5 Kd7 (38...Ke7 39.e4 fe4 40.fe4+-) 39.Kf2 (39.Bc3 Ke6+-) 39...Kc6 (better is 39...b4+-) 40.e4 f4 (40...fe4 41.fe4 b4 42.Bf6+-) 41.h3 b4 42.h4! gh4 43.Kg2 (worse is 43.Bf4 h3 44.Kg3 Kc5+-) 43...b3 (43...h3 44.Kh3 Kd7 45.Kh4+-) 44.Kh3 (44.Bf4?? b2 45.Bg5 b1Q 46.Bh4 Qc1–+) 44...Kb5 45.Kh4 (45.Bf4?? b2 46.Kh4 b1Q 47.Kh5 Qg1–+) 45...Kc4 46.Kh5 (46.Bf4?? b2 47.Kh5 b1Q–+) 46...Kd3 (46...Kb5 47.Kg4 (47.Bf4?? b2–+) 47...Kc4 48.Kf4+-) 47.Kg4 (better is 47.Bb2 Kc2 48.Ba3+-) 47...Kc2 (47...Kc4 48.Kf4 Kd3 49.Ba1+-) 48.Kf4 (48.Ba1 Kb1 49.Bd4 Kc2+-) 48...b2 (48...Kd3+-) 49.Bb2! Kb2 50.e5 (50.e5 Kc3 51.Kf5+-) 1–0. Trkn – Dub, itsyourturn.com, 2000.

9.cd5 cd5

10.Bc3 Qd7 (10...Nh6 11.d4 e4 12.Qd2 Bd6 13.Bb4 0-0=; 10...Qc7 11.d4 Bf5 12.Ne2 Bd6 13.Nd2 Ne7+=; 10...Bf5 11.Ne2 Bd3 12.Ng3 Bf1 13.Nf1 Qb6=; 10...Bd6 11.d4 e4 12.Qh5 g6 13.Qd1 Ne7=) 11.d4 e4 12.Ne2 Qb5 13.Nf4 Qd7+=.

10.d4 e4 (10...Bb4 11.Bc3 Bc3 12.Nc3 Ne7 13.Bd3 e4=) 11.Nh3 Bd6 12.Nf4 Bf4 13.ef4 Qc7=.

10.Be2 Bd6 (10...Qc7 11.Nf3 Bd6 12.d4 e4 13.Nfd2 Nd7+=; 10...Nd7 11.Nc3 Bd6 12.Bh5 g6 13.Be2 Ne7=; 10...Nh6 11.Nf3 Bd6 12.Nc3 Qd7 13.d4 e4=; 10...Bb4 11.Bc3 Bd6 12.Bh5 g6 13.Be2 Qc7=) 11.Bh5 g6 12.Be2 Ne7 13.d4 e4+=.

10.Nf3 Bc5 11.d4= Bd6 (better is 11...Bb4!? 12.Bc3 Bc3 13.Nc3 Nd7=) 12.de5+/– fe5 13.Be5 Be5 14.Ne5 Nf6 (14...Qa5 15.Nd2+/–) 15.Qd4 (15.Nf3 0-0+/–) 15...Qa5 16.Qc3 Qa2 17.Bd3 0-0 (17...Ne4 18.Be4 de4 19.0-0+/–) 18.0-0+- Ne4 (18...Nbd7 19.Nd7 Nd7 20.Nd2+-) 19.Qc7 Bg4?? (better is 19...Qb2 20.f4 Qb4+-) 20.Ng4 1–0. miec – kizaga, internet, 2009.

10.Nf3 Bd6 (10...Nh6 11.Be2 Bd6 12.0-0 Nf5 13.Qb3 Nd7=; 10...Qc7 11.Bb2 Bd6 12.d4 Bb4 13.Nfd2 Nh6=; 10...Nd7 11.d4 e4 12.Nfd2 Bd6 13.Bb2 Ne7=) 11.d4 e4 12.Nfd2 f5 13.Bb2 f4=.

10.Qh5 Bf7 (10...g6 11.Qd1 Bd6 12.d4 e4 13.Bc3 Qc7=) 11.Qd1 Qc7 12.d4 Bb4 13.Nd2 e4+=.

9.cd5 Bd5

10.Bb2 Ne7 (10...Be7 11.Nc3 Nh6 12.Nd5 cd5 13.Nf3 0-0=; 10...Bd6 11.Nc3 Ne7 12.Nd5 cd5 13.Qg4 0-0=; 10...Be6 11.d4 ed4 12.Bd4 c5 13.Bc3 Qd1=; 10...Bf7 11.Nc3 Ne7 12.Nf3 Nd5 13.bc6 Nc3=) 11.Nc3 Be6 12.Nf3 Nd5 13.Be2 Bb4=.

10.Nc3= Bb4 11.Nd5 cd5 12.Qg4 Bf8 13.Bc3 Qd7=.

10.Nc3= Bd6 11.Nf3 Ne7 12.Nd5 cd5 13.Be2 Qc7=.

10.Nc3= Be6 11.Nf3 Bb4 12.Qb1 Qa5 13.Bd3 Ne7=.

10.Nc3 Be6 11.Nf3 Bc5 12.d4 ed4 13.Nd4 Bd7?? (better is 13...Bd4 14.Qd4 Qd4 15.ed4 Ne7=) 14.Qh5+- g6 15.Qc5 Qa5 (15...Ne7 16.Ne4 0-0 17.Bc4 Kg7 18.Ng5+-) 16.Bb2 Ne7 (16...Na6 17.Qd6 Qb4 18.ba6 Qb2 19.Nd1+-) 17.Qd6 Qa7 (17...Qd8 18.Ne4 Nd5 19.Bc4+-) 18.Bc4 (18.Ba3 c5 19.Bc5 Qa1 20.Kd2 Qb2 21.Nc2+-) 18...cb5 (18...Nc8 19.Qf6 Rf8 20.Qe5 Ne7+-) 19.Ncb5 Bb5 20.Nb5 Qa5 21.Bc3 Qd8 22.Nc7 Kf8 23.Qf6 1–0. b4_player – vangog, gamecolony.com, 2007.

10.Nc3= Ne7 11.Nf3 Ng6 12.Nd5 cd5 13.Be2 Bd6=.

10.Nc3= Bf7 11.Nf3 Nh6 12.Be2 Bd6 13.d4 ed4=.

10.bc6 Nc6 11.Nc3 Be6 12.Bb5 Bb4 13.Qh5 g6=.

10.d4 Bb4 (10...ed4 11.Bd4 Bb4 12.Bc3 Qa5 13.Qd2 Bc3=; 10...e4 11.Ne2 Bd6 12.Nec3 Bb4 13.Be2 Ne7=) 11.Bc3 Bc3 12.Nc3 Qa5 13.Qd2 Qa1=.

10.Nh3 Be6 (10...cb5 11.Bb5 Nc6 12.f3 Bd6 13.Nc3 Be6=; 10...Bd6 11.Nc3 Be6 12.Ne4 Be7 13.f4 Nd7=) 11.d4 Bb4 12.Bc3 Bc3 13.Nc3 Qa5+=.

7.Ba1 Be6

8.c4 dc4 9.Qc2 Qd5 10.Nc3 (10.Qa4 Kf7=+) 10...Qc5 11.Nf3 Nd7 12.Be2 Nb6 (12...Qa3 13.0-0–/+) 13.0-0 Bd6 14.Ne4 (14.d4 cd3 15.Bd3 Nd5=+) 14...Qb5–/+ 15.Nd6 cd6 16.Rb1 Qc6 17.Bc3 (17.Qb2 Nd7–/+) 17...Ne7–+ 18.d4? (18.d3 0-0–/+) 18...cd3 (better 18...Bf5 19.Rb6 Bc2 20.Rc6 bc6 21.Bc4 Nd5–+) 19.Bd3–/+ Ned5?? (better 19...Nc4–/+) 20.Bb5+- 0-0 (20...Nc8 21.Bc6 bc6 22.Ba5+-) 21.Bc6 bc6 22.Ba5 Nd7 (22...Nc8 23.Qc6 Nde7 24.Qa6+-) 23.Qc6 Bf7 (23...Kf7 24.Rb7 Rb8 25.Rd7 Bd7 26.Qd7 Ne7 27.h3+-) 24.Qd6 e4 25.Qd7 (better 25.Nd4 N7b6 26.Bb6 Re8+-) 25...ef3 26.gf3 h5 (26...f5 27.Rb5 Nf6 28.Qf5+-) 27.Rb7 Kh7 (27...f5 28.Qf5 h4 29.e4+-) 28.e4 Nf4 29.Bd2 (29.Bb4 Ra8 30.h4 Rb8 31.Rb8 Be6+-) 29...Ne6 (29...Ng6 30.Bb4 Ne5+-) 30.Bb4 Rd8 31.Qf7 Rd1 32.Kg2 Nf4 33.Kg3 Ne2 34.Kh4 Rg1 (34...Rd7 35.Qd7 Nf4 36.Qg7) 35.Qh5 Kg8 36.Rb8 1–0. BeepBeepImAJeep (2545) – Clovis99 (2455), lichess.org, 2017.

8.d4 ed4 9.Bd4 Bd6 10.Nf3 Ne7 11.Be2 0-0 12.0-0 c5 13.bc6 bc6 14.c4 c5 15.Bb2 Nbc6 16.Na3 Nb4 17.Nb5 Bb8 18.cd5 Ned5 19.Qb1 Qe7 20.Rd1 Bf7 21.Ba3 Bg6 22.Qc1 Kh8 23.g3 (23.Nh4 Be4=) 23...Bf7 24.Ne1 Be5 25.e4 Nb6 26.Nf3 Bb8 27.Nfd4 Re8 (worse is 27...cd4 28.Rd4 N6d5 29.Qd2+/–; 27...Qe4?? 28.Qc5 Re8 29.Bf3+-) 28.Bb4 cb4 29.Qc6 Nc8 30.Bc4 Bh5 31.Nf5 Qe4 32.Qd7 Qg4 33.Rd4 Qg6 34.Be6 Bf3 35.Rd3 Nb6 (better is 35...Bh5!?=) 36.Qd8+/– Nd5 37.Rd5 b3 38.Na3 Bd5? (better is 38...b2=) 39.Qd5+- Be5 40.Qd7 Re6 41.Qe6 h6 42.f4 Ba1 43.Qd7 Kh7 44.Nb5 b2 45.Nc3 Qg4 46.Kf2 Kh8 47.h3! Qg6 (47...Qh3 48.Qg7 Mate attack) 48.Ke3 1–0. Muri,Heinrich (2375) – Jenkinson,Simon W (2140), WC35/pr05 ICCF, 2011.

8.Nf3 Bd6 9.c4 c6 10.Qa4 (10.d4 Nd7 11.bc6 bc6 12.de5 fe5 13.cd5 cd5 14.Nc3=) 10...Nh6 (10...Ne7 11.bc6 Nbc6= (worse 11...Nec6 12.Nc3 dc4 13.Bc4+/-)) 11.bc6+= bc6 (11...Nc6 12.Nc3 dc4 13.Bc4 Bc4 14.Qc4+/-) 12.cd5+/- Bd5 13.Nc3 0-0 14.Bc4 Bc7 (14...Bf7 15.0-0+/-) 15.e4 (15.0-0 Nf7+/-) 15...Bf7 (15...Bc4 16.Qc4 Nf7 17.0-0+=) 16.0-0+/- Kh8 (16...Qd6 17.Bb2+/-) 17.Bf7 (17.Bb2 Bd6+/-) 17...Nf7+= 18.Rd1 Qd3 19.Ne1 (19.Bb2 Rc8+=) 19...Qd7 (19...Qa6 20.d4+=) 20.Bb2 Rd8 21.Ba3 Bd6 22.Bd6 Qd6 23.Nf3 Qd3 24.Ne1 Qd4 (24...Qd6 25.h4+=) 25.Qc2 (25.Qa5+=) 25...Na6? (25...Ng5 26.h4 Ne6 27.Nf3=) 26.Nf3 (better 26.Qa2!? Qa7 27.Ra1+/-) 26...Qd3 27.Qd3 Rd3 28.Kf1 h6 29.Ke2 Rd6 30.Ra1 Nc5 31.Ra7 (31.h4 g5=) 31...Ng5= 32.Ng5 hg5 33.f3 Nb3 Attacking the backward pawn on d2 34.Nb1 Nd4 35.Kd1 g6 (35...Rd8 36.Rb7=) 36.Rb7 Kg8 37.Nc3 Kf8 38.Ne2 Ne6 39.Kc2 Ke8 40.Rb8 Rd8 41.Rb7 Rd7 42.Rb8 Rd8 43.Rb7 Rc8 (43...Rd7 44.Rb6=) 44.Ra7 Rd8 45.Rb7 ½-½. Lance5500 (2620) - AARRTTUURRAASS (2020), lichess.org, 2019.

8.Nf3 Nd7 9.d4 Qa8 10.Bb2 Qa2 11.Qc1 Bb4 12.c3 Bd6 13.de5 fe5 14.c4 Ngf6 15.Be2 dc4 16.Nbd2 Nb6 17.Ne5 c4 draws heavy fire 17...Na4 18.Nec4 Bb4 19.Ba3 (better is 19.Bf6!? gf6 20.0-0+=) 19...Bc3= 20.0-0? (better is 20.Kf1=) 20...Bc4–+ 21.Bc4 Qd2 22.Qb1 Ba5 23.Rd1 Qc3?? (23...Nc3 24.Bf7 Kf7 25.Qb3 Qd5 26.Rd5 Nfd5+/–) 24.Qa2+/– Bb4 25.Bb4 Qb4 26.Rb1 Nc3 27.Rb4 Na2 28.Ra4 Kd7 29.Ra2 Kd6 30.f3 Rf8 31.Bd3 g5 32.Rd2 Ke6 33.g3 Ra8 34.f4 g4 35.e4 h5 36.Kf2 Ra4 37.Ke3 c6 38.bc6 bc6 39.Rc2 Kd7 40.Bc4 Ke7 41.e5 Nd5 42.Bd5 cd5 43.Rc7 Ke6 44.Rc6 Ke7 45.Rd6 Re4 46.Kd3 h4 47.Rd5 (47.gh4?! Rf4 48.Rd5 Rf3 49.Ke4 Rf2+/–) 47...Re1 48.gh4 Ke6 (48...Rh1+-) 49.Rd6 Kf7 50.Rf6 Ke7 51.Rg6 1–0. Szczepanski,Zbigniew (2480) – Ciornenkiy,Andrian (1750), OP–2011–0-01585, 2011.

8.Nf3 Nd7 9.d4 e4 10.Nfd2 Bd6 (10...Qa8 11.Bb2=) 11.c4= c6 (11...f5 12.c5 Be7 13.Qh5 g6 14.Qd1=) 12.c5 Bb8 13.Qb3 f5 14.Be2 Ngf6 15.0-0 f4 (15...0-0 16.Nc3=) 16.ef4 (16.f3 ef3 17.Bf3 Qe7+=) 16...Bf4= 17.g3 Bb8 18.Nc3 Bf7 19.Bb2 0-0 20.Ra1 Kh8 (20...Qe7 21.Re1=) 21.Ra8 (21.bc6 bc6 22.Qb7 Qc8 23.Qc8 Rc8+=) 21...Qc7 (21...Qe7 22.Qa4 e3 23.bc6 Nc5 24.dc5 ed2 25.c7 Bc7 26.Rf8 Qf8 27.Qd4–/+) 22.bc6 (22.f3 b6 23.bc6 Qc6=) 22...bc6 23.Qa4 (23.f3 ef3 24.Bf3 Ne4–/+) 23...Bh5+= 24.Bh5 Nh5 25.Nf1 Ndf6 (25...Qb7 26.Bc1=) 26.Bc1 (26.Ne3 Qb7 27.Bc1 Ng8=) 26...Ng4 Attacks the backward pawn on f2 27.Be3 Qf7 28.Nd1 Qf3 (28...Qe6 29.Qa7 Qc8 30.Qe7=) 29.Qb4 Bd6 (29...Qd1 30.Qb8 Qf1 31.Kf1 Ne3 32.Ke2 h6 33.Qf8 Kh7 34.Ra7 Kg6 35.Ke3 Kg5 36.h4 Kg6 37.Qf7 Kh7 38.Qf5 Kg8 39.Ra8) 30.Rf8 (30.Qb7 Be7+=) 30...Bf8 31.Nc3 g5 (31...Nhf6 32.Qb7 Nf2 33.Bf2 Qc3 34.Qf7 Bc5 35.dc5+=) 32.Qb8+= Ne3? (better is 32...Qf6!?+=) 33.Ne3+- (33.fe3?! Ng7+=) 33...Ng7? (33...Qf7 34.Qc8 Qg7+-) 34.Qc8?? (better is 34.Ncd5 Qf7 35.Nb4+-) 34...Qf6+/– 35.Ng4 Qf5 36.Qa8 Ne6 37.Ne3 Qf6 38.Qc6 Qd4 39.Qe6 Qc3 40.c6 (40.Nd5?! Qc5 41.Qe4 h6+/–; 40.Qd5?! Qc5 41.Qe4 Qe7+/–) 40...d4 (40...g4 41.Qd7 d4 42.Nf1+-) 41.Qf6 (better is 41.Qe5 Kg8 42.c7 Qc7 43.Qc7 de3 44.fe3 h6+-) 41...Kg8 42.Qg5 Kf7 43.Qf5 Kg7 44.Qe5 Kf7 45.Qd5 (better is 45.c7 Qc6 46.Qd5 Qd5 47.Nd5+-) 45...Kg6 (45...Kg7 46.Qd7 Kg6 47.c7 de3 48.Qe8 Kg7 49.c8Q Qe1 50.Kg2 Qf2 51.Kh3 Qf1 52.Kh4 Qf6 53.Kh5 Qg6 54.Qg6 hg6 55.Kg4+-) 46.Qe4 (better is 46.Qg8 Kf6 47.Nd5 Ke5 48.Nc3 (48.Qf8?! Kd5 49.Qf5 Kc6 50.Qe4 Kb5+/–) 48...dc3 49.c7 Kf6 50.c8Q Bg7 51.Qge6 Kg5 52.h4 Kh5 53.Qce8) 46...Kf7 47.Qh7 Ke6 (47...Bg7 48.Qf5 Kg8 49.Qc8 Bf8+-) 48.Qf5 (48.Qg6 Ke7 49.Nd5 Kd8 50.Qf6 Be7 51.Qe7 Kc8 52.Qe8) 48...Kd6 49.Qd5 Kc7 50.Qd7 Kb6 51.Nd5 1–0. Nikishin,Sergey (2050) – Vodolazhenko,Nikolay (1920), Chess Tournament, 2012.

8.f4 ef4 9.ef4 Bd6 10.g3 Nh6 11.Nf3 (11.Qh5 Kd7+=) 11...0-0 12.Bg2 Qd7 (12...Bd7 13.Nd4 Re8 14.Ne2–/+) 13.Nc3 Bc5 14.d4 Bb4 15.Qb1 (15.0-0 Bc3 16.Bc3 Qb5+=) 15...Qd6 (better is 15...Qb5! 16.Kd1 Qa5–/+) 16.0-0+= Nd7 (16...Re8 17.Na2 Ba5 18.Bc3 Bc3 19.Nc3=) 17.Nh4 (17.Na2 Ba3+=) 17...Bc3 (17...Ra8!?+=) 18.Bc3+= Nf5 (better is 18...Re8!?+=) 19.Nf5 Bf5 20.Bb4 Qb6 21.Bf8 Qd4 22.Kh1 Kf8 23.Rd1 Qa4 (23...Qe3 24.Bd5 Be4 25.Be4 Qe4 26.Kg1 Qe3 27.Kg2 Qe2 28.Kh3 Qh5 29.Kg2 Qe2 30.Kg1 Qe3 31.Kf1 Qf3 32.Ke1 Qe3 33.Kf1 Qf3 34.Kg1 Qe3=) 24.Rd5 (24.Bd5? Bc2 25.Qc1 Bd1 26.Qc7 Ke7 27.Qb7 Be2–+) 24...Bc2? (24...g6 25.Rd2 Nc5+-) 25.Qe1 Bf5 26.Rf5 (26.Rf5 g6 27.Rd5+-) 1–0. Romanski,Andreas – Kirsch,Frank, Oberhau Post op 1st, 1991.

5.a4 Bd7

6.c4 dc4 7.Bc4 ab5 8.Bg8 Rg8=+ 9.ab5 (9.Qb3 Rh8 10.ab5 Ra1 11.Ba1 Bf5=+) 9...Ra1–/+ 10.Ba1 Bb5 11.Qb3? (better 11.Nc3 Bc6 12.Qh5 Ke7 13.e4–/+) 11...c6?? (better 11...Qd3 12.Qd3 Bd3–+) 12.Qg8?? (better 12.Qe6 Qe7 13.Qg8+-) 12...Qd3 13.Qe6 Be7 (13...Kd8 14.Qc4 Bc4 15.Be5 Qb1) 14.Kd1 (14.Qc8 Kf7 15.Qe8 Ke8 16.Be5 Qb1) 14...Bc4 (14...Qb1) 15.Qc8–+ Kf7 Threatening mate... how? 16.Nc3 Qf1 17.Kc2 Bd3 (better 17...Na6 18.Nge2 Nb4 19.Kb2 Qh1–+) 18.Kb2–/+ Ba3?? (better 18...Qe1 19.Nf3 Qh1 20.Qb8 Qg2–/+) 19.Ka3+- Qa1 20.Kb3 Qf1 21.Qb7 Kg6 22.Qb8 Qg2 23.Qe8 (23.Nf3! Qh1 24.Ne5 fe5 25.Qd6 Kf7 26.Qd3 Qh2 27.Qd7 Kf8+-) 23...Kh6 24.Nge2 (24.Qd7 Qh1 25.Qh3 Kg6+-) 24...Qh1 25.Qc6?? (better 25.Ng3 Qh2 26.e4+-) 25…Qc6–+ (25...Qc6 26.Nc1 Bf5–+) 0–1. aravind555 (1710) – Sr_Peao (1785), lichess.org, 2020.

6.c4 dc4 7.Bc4 Ne7 8.Ne2 ab5 9.ab5 Ra1 10.Ba1 c6 (10...Nf5 11.d4 Nd6 12.Bd5 ed4 13.Nd4 Nb5 14.Nb5 Bb5 15.Nc3=) 11.Nbc3 (11.Qb3 Nc8+=) 11...Ng6 (11...Nc8 12.d4=) 12.Ng3 (12.0-0 Qa5+=) 12...Be7 (12...cb5 13.Nb5 Na6 14.0-0+=) 13.Qh5 Qc8 14.Bd3 Kf7 15.0-0 (better 15.Nf5+=) 15...Bg4–/+ 16.Bg6?? (better 16.Bf5 Bh5 17.Bc8 Rc8 18.Nh5–/+) 16...hg6–+ 17.Qh8 Qh8 18.Nce4 (18.d4 ed4 19.ed4 cb5 20.Nb5 Qd8–+) 18...cb5 19.Rb1 (19.d4 ed4 20.h3 Be6 21.Bd4 Qc8–+) 19...Bd7 (19...Qc8 20.d4 Qc2 21.Rf1–+) 20.Rc1 Bc6 21.Bb2 Qh4 22.Nc3 (22.f3 f5 23.Nf2 Nd7–+) 22...Qb4 23.Ba1 Qa3 24.Nce2 Na6 (24...Qd3 25.e4–+) 25.Bc3 (25.d4 e4–+) 25...Nc5 (better 25...b4 26.Ba1 Nc5 27.Rd1–+) 26.Ra1 (26.d4 b4 27.dc5 bc3 28.Rc3 Qb2–+) 26...Qb3 27.h3 (27.d4 b4 28.Be1 Qb2–+) 27...Ne4 Black prepares the advance b4 (better 27...b4!? 28.Be5 fe5 29.d4 ed4 30.Nd4–+) 28.Ne4 Be4 29.Ng3 (29.f3 Bb1 30.Ba5 b4–+) 29...Bc6 30.Ne2 (30.Ba5 b4 31.f3 Qc2–+) 30...b4 31.Nc1 (31.f3 bc3 32.Nc3 b5–+) 31...Qd5 (31...bc3?! 32.Nb3 Bd5 33.dc3 Bb3 34.f3–+) 32.f3 bc3 33.dc3 Bc5 (better 33...Qd1 34.Kf2–+) 34.Kf2 Qd2 35.Kg3 Be3 36.h4 (36.Nd3 e4 37.Re1 ef3 38.Kh4 Bg5 39.Kg3 Qg2) 36...Bf4 37.Kh3 Qf2 (37...Bd7 38.g4 Qh2) 38.Ne2 Qe2 (38...Bd7 39.g4 Qh2) 39.Ra7 (39.Rd1 Qd1 40.h5 Bd7 41.g4 Qh1) 39...Bf3! 40.Rb7 (40.gf3 Qf3 A classical mating theme) 0–1. aravind555 (1815) – ymays (1865), lichess.org, 2020.

5.c4 ab5

6.cd5 c6 7.dc6 bc6 8.d4 Bb4 9.Nd2 e4 (9...ed4 10.Bd4 Be6 11.Ngf3=+) 10.a3= Bd2 11.Qd2 f5? (11...Ne7 12.Ne2=) 12.Qc2 (better 12.d5 Ne7 13.dc6 (13.Bg7?! Rg8 14.Bf6 Qd5=) 13...Qd2 14.Kd2 Nbc6 15.Bb5+/-) 12...Nf6= 13.Ne2 Nbd7? (13...Be6 14.Nf4 Bd5 15.a4 ba4 16.Ra4 Ra4 17.Qa4+=) 14.Nf4 (14.Qc6 Ra6 15.Qc2+- (15.Qb5?! Rb6 16.Qf5 Rb2=)) 14...Nb6 (14...Qa5 15.Bc3 Qa4 16.Qa4 ba4 17.Rc1+=) 15.Qc6+/- Bd7 16.Qc5 Rc8 17.Qb4 Nfd5 18.Nd5 Nd5 19.Qd6?? (better 19.Qb3+=) 19...Nc3?? (better 19...Qa5 20.Kd1 Nc3 21.Ke1 Na4 22.Qb4 Qb4 23.ab4 Nb2-+) 20.Bc3+- Rc3 21.Qe5 (better 21.Bb5!? Qc8 22.0-0+-) 21...Kf8 (21...Qe7 22.Qb8 Rc8 23.Qb6+/-) 22.Be2 (22.Bb5 Qe7 23.Bd7 Qd7+-) 22...Rc2 23.Qd6 (23.Bb5? Qa5 24.Kf1 Qb5 (24...Bb5?! 25.Kg1 Qa6 26.Qf5 Qf6 27.Qf6 gf6 28.h4=+) 25.Qb5 Bb5 26.Kg1 Ke7-+) 23...Kf7 24.Qb4 (24.Bh5 g6 25.Bd1 Qa5 26.Kf1 Qc7 27.Qc7 Rc7 28.Bb3 Ke7+=) 24...Qc7+= 25.Rd1 (25.Bh5 g6 26.Be2=) 25...Ra8 (better 25...Qc3!? 26.Qc3 Rc3=) 26.Bb5+/- Bb5 27.Qb5 Qc3 28.Kf1 Ra3? (better 28...Qc4!? 29.Qc4 Rc4+/-) 29.Qf5+- Kg8 30.g3 (better 30.Qe4!? Qc8 31.Qd5 Kh8 32.h3+-) 30...Raa2+/- 31.Qe6 Kf8 32.Qd6 (32.Qe4 Rf2 33.Kg1 Qb2 34.Qe7 Ke7 35.Rd2 Qd2 36.e4 Qc1) 32...Kf7 33.Qd5 (better 33.Qf4 Kg8 34.Kg2 (34.Qe4? Rf2 35.Kg1 Qb3-+) 34...Rf2 35.Qf2 Rf2 36.Kf2 Qc2 37.Ke1=) 33...Kf6 (better 33...Kf8!? 34.Kg1 Rf2 35.Qd8 Kf7 36.Qd7 Kf8 37.Qd6 Kf7 38.Qd5 Kf8 39.Qd8 Kf7 40.Qd7 Kf8 41.Qd8=) 34.Qe5+/- (34.Qe4?! Rf2 35.Kg1 Rg2 36.Qg2 Qe3 37.Kf1 Rg2 38.Kg2 Qe2 39.Kh3 Qh5 40.Kg2 Qe2 41.Kh3 Qh5 42.Kg2 Qe2=) 34...Kf7 35.Qf5 (35.Qf4 Kg8 36.h4 Rf2 37.Qf2 Rf2 38.Kf2 Qc2 39.Ke1 Qg2=) 35...Kg8 36.Qe6 Kf8 37.Qd6 (37.Kg2 Qe3 38.Qf5 Ke7+=) 37...Kf7= 38.Qd5 (38.Qf4 Kg8 39.Kg2 Rf2 40.Qf2 Rf2 41.Kf2 Qc2 42.Ke1 Qg2=) 38...Kf8 39.Qd8 (39.Qe4 Rf2 40.Kg1 Qb2 41.Qe7 Ke7 42.Rd2 Qd2 43.e4 Qc1) 39...Kf7 40.Qd5 Kf6 (40...Kf8 41.Kg2 (41.Qe4 Rf2 42.Kg1 Qb2 43.Qf4 Rf4 44.Rd2 Qd2 45.gf4 Qc1) 41...Rf2 42.Kh3 Qc8 43.g4 Rf3 44.Kh4-/+) 41.Qe5 (41.Kg1!?+/-) 41...Kf7= 42.Qf4 Ke8?? (better 42...Kg8 43.h4 Rf2 44.Qf2 Rf2 45.Kf2 Qc2 46.Ke1 Qg2=) 43.Qe4+- Kd8 44.Qf3 Rf2 45.Qf2 Rf2 46.Kf2 Qc2 47.Kf3 Qf5 48.Ke2 Qg4 (48...Qg4 49.Kd2 Qe4+-). zembelek (2025) - 101010 (2090), Rated Blitz game, lichess.org, 2014.

6.cb5 c6

7.a4 Ra7 8.bc6 Nc6 9.Bb5 Bf5 10.Nf3 Bd6 11.d4 e4 =.

7.a4 Bb4 8.Bc3 Ba5 9.Ba5 Qa5 10.Nc3 Ne7 11.Qh5 g6 =+.

7.a4 c5 8.d4 ed4 9.ed4 c4 10.Be2 Bd6 11.Nc3 Ne7 =+.

7.a4 Bd6 8.bc6 Nc6 9.Nc3 Be6 10.Qh5 g6 11.Qf3 d4 =+.

7.a4 Bd7 8.Nc3 (8.d4 Bb4 (8...Qa5 9.Bc3 Bb4 10.Qd2 Bc3 11.Nc3 Ne7=; 8...cb5 9.ab5 Bb4 10.Nd2 Ra1 11.Qa1 e4=; 8...ed4 9.Bd4 Bd6 10.Bd3 Nh6 11.Nf3 c5=) 9.Bc3 Qa5 10.Qd2 Bc3 11.Nc3 Ne7=; 8.Nf3 Bb4 (8...Ne7 9.d4 e4 10.Nfd2 Nf5 11.Qb3 Qa5=; 8...Bd6 9.d4 e4 10.Nfd2 Ne7 11.Ba3 Ba3=) 9.Bc3 Bd6 10.bc6 Nc6 11.Qb3 Nge7+=; 8.Be2 Qb6 (8...c5 9.d4 cd4 10.ed4 e4 11.Qb3 Be6=; 8...Bb4 9.Qb3 Ba5 10.bc6 Bc6 11.Nf3 Qb6=; 8...Nh6 9.d4 e4 10.Qb3 Bd6 11.bc6 Bc6=; 8...Bd6 9.d4 Ne7 10.de5 Be5 11.Be5 fe5+=) 9.Nc3 Bd6 10.d4 Ne7 11.de5 fe5+=; 8.Bc3 cb5 (8...c5 9.d4 ed4 10.ed4 Bf5 11.dc5 Bc5=) 9.Bb5 Bd6 10.Nf3 Ne7 11.Qb3 0-0+=) 8...Bb4 (8...Qa5 9.bc6 Nc6 10.Bb5 Be6 11.Rc1 Bd6=; 8...Bd6 9.bc6 bc6 10.Ba3 Ba3 11.Ra3 Qe7=; 8...Be6 9.d4 Bd6 10.Ba3 Qa5 11.Bd6 Qc3=; 8...Ra5 9.d4 ed4 10.Qd4 Bd6 11.Nf3 Ne7=) 9.Qb3 (9.bc6 Bc6 10.Qg4 Qe7 11.Qc8 Kf7=) 9...Bc3 (9...Qa5 10.bc6 Nc6 11.Bb5+= Nge7+=) 10.dc3 (10.Bc3 cb5 11.ab5 Ra1=) 10...Ne7 (10...Qa5 11.Be2 Ne7+=) 11.c4 Be6 (11...0-0+=) 12.Nf3 Nd7 13.Ba3 (13.bc6 bc6 14.cd5 Nd5+=) 13...c5 14.Bb2 b6 (14...d4!?+=) 15.Rd1 (15.cd5 Bd5 (15...Nd5? 16.Bc4+-) 16.Bc4 Bf3 17.Bf7 Kf8 18.gf3 Ng6+=) 15...d4= 16.Bd3 0-0 17.0-0 Bf5 18.e4 (18.Bf5 Nf5 19.ed4 Nd4 20.Nd4 ed4=) 18...Bg6 19.Nh4 Bf7 20.Nf5 Bg6 21.f4 (21.Nh4 Bh5 22.f3 Bf7+=) 21...Bf5 (21...ef4 22.Rf4 Ne5 23.Ra1+=) 22.ef5= ef4 23.Rf4 Ne5 24.Be4 Ra7 25.h4 (25.Bc1 Qe8=) 25...g6 (better is 25...Qe8!?–/+) 26.Rdf1 Kh8 27.Bc1 gf5 28.Bf5 N7g6 (28...Nf5 29.Rf5 Qd6 30.Bg5=) 29.Re4 Qa8 30.Bh6 (30.Re2 Ra4 31.Be4 Qa7 32.Bg6 Rb4=) 30...Rg8 31.Qc2 (31.Re2 Nh4 32.Be4 Qe8=) 31...d3 (31...Ra4 32.Qf2 Ra2–/+ (32...Nc4 33.Bc8 Nf4 34.Qf4 Rg2 35.Kg2 Ra2 36.Kh1 Qc6 37.Qf6 Qf6 38.Re8 Qf8 39.Rff8)) 32.Qf2= Qd8 (better is 32...Nf7!? 33.Bd2 Nd6+= (worse is 33...Ra4 34.Bg6 Rg6 35.Rf4+/–)) 33.Be6+/– Re8 (better is 33...Nf7 34.Bd2 Re8+/–) 34.Bd5+- Nd7 35.h5?? (better is 35.Re8 Qe8 36.h5+-) 35...Ngf8?? (better is 35...Nge5+=) 36.Qg3+- Ne6 37.Be6 Nb8 38.Qf4 (38.Rd1!? Rae7+-) 38...Ra4 (38...Nd7 39.Rd1 Ne5 40.Re5 Qd4 41.Qd4 cd4 42.Rd5+-) 39.Qf6 Qf6 40.Rf6 d2 41.Bd2 Nd7 (41...Ra3 42.Ref4 Nd7 43.Bd7 Rg8+-) 42.Bc3 1–0. Borek,Jan (1925) – Niewolik,Tomasz (2560), Mistrzostwa Okregu '97 (Nowy Sacz, Poland), 1997.

7.a4 Nd7 8.bc6 bc6 9.Qc2 Qb6 10.Nf3 Bd6 11.Ba3 Ba3 =.

7.a4 Be6 8.d4 Nd7 9.de5 fe5 10.Nf3 Bg4 11.Be2 Bb4 =.

7.a4 Be7 8.Be2 Bd6 9.d4 e4 10.Nc3 Qa5 11.Qb3 Ne7 =.

7.a4 Bf5 8.Nc3 d4 9.ed4 ed4 10.Qh5 Bg6 11.Qe2 Ne7 =+.

7.a4 Nh6 8.bc6 Nc6 9.Bb5 Bd6 10.Nc3 Be6 11.Qb3 0-0 =+.

7.Nc3 Bd6 8.bc6 bc6 9.d4 Ne7 10.Nf3 e4 11.Nd2 0-0 =+.

7.bc6 Nc6 8.Bb5 Nh6 9.Qb3 Nf5 10.Ne2 Be6 11.0-0 Nd6 =+.

7.d4 Bb4 8.Bc3 Qa5 9.Qd2 Bc3 10.Nc3 Ne7 11.Rd1 0-0 =+.

7.Be2 Nh6 8.Nc3 Bd6 9.d4 Be6 10.bc6 Nc6 11.de5 fe5 =+.

7.f4 ef4 8.ef4 Bf5 9.Qh5 Bg6 10.Qe2 Kf7 11.Nc3 Bd6 =+.

5.c4 dc4

6.ba6 Na6 7.Bc4 Nh6 (7...Nb4 8.Qb3 Nh6 9.Ba3 Qd6 10.Nf3 Bg4 11.h3+=; 7...Bc5 8.f4 (8.Ne2; 8.d4; 8.Nf3) 8...Nb4 9.Qb3 Nh6 10.fe5 Bf5 11.ef6+=; 7...Bd6 8.d4 Ne7 9.de5 Be5 10.Qd8 Kd8 11.Be5=; 7...Qd7 8.Qh5 g6 9.Qe2 e4 10.d3 b5 11.Bg8=; 7...Qd6 8.Nc3 (8.Qh5 g6 9.Qe2 e4 10.d4 ed3 11.Bd3+=) 8...Be6 9.Be6 Qe6 10.Nge2 Bb4 11.d4=) 8.Nc3 (8.d4 ed4 9.Qh5 g6 10.Qe2 Nb4 11.ed4+=; 8.Ne2 Nb4 9.Nc1 Bg4 10.Qb3 Qd7 11.f3=; 8.Qh5 g6 9.Qe2 Nb4 10.d4 ed4 11.ed4+=; 8.a3 Nf5 9.d4 ed4 10.ed4 Nd6 11.Bd3+=) 8...Nc5 (8...Nf5!?+= 9.d4 ed4 10.ed4 Bb4 11.a3=) 9.d4= ed4 10.ed4 Ne6 (10...Nd7 11.Qh5+=) 11.Qe2 Bb4?? (better is 11...Kf7=) 12.Be6 Qe7 (12...Be6 13.Qe6 Qe7 14.Qe7 Ke7 15.a3+-) 13.Bb3 (13.Bc8 Rc8 14.Kf1 c6+-) 13...Qe2 14.Nge2 b6 (14...Kd8 15.a3 Ba5 16.Kd2+-) 15.Bd5 (15.a3 Ba5+-) 15...Ra5 16.0-0 Bc3 (16...Kd7 17.Nf4+-) 17.Nc3 (17.Bc3?! Rd5 18.Rfe1 Kf7=) 17...Nf5 18.Rfe1 Kd7. Bonetti,Shane – guest1759, ICC, 2002.

6.ba6 b5 7.a4 c6 8.ab5 (8.f4 Ra6 9.fe5 Nd7 10.Nf3 Nc5 11.ab5+=) 8...cb5 9.Nc3+= (9.a7 Na6 10.d3 Ra7 11.dc4+=) 9...Qd7 10.a7 Na6 11.d3+=.

6.ba6 b6 A) 7.Qf3 A1) 7...c6 8.Bc4 (8.a7 Ra7 9.Bc4 b5 10.Bb3 Nh6 11.d4+=) 8...Ba6 9.Ba6 Ra6 10.d4 ed4 11.Bd4+=; A2) 7...Ra7 8.Bc4 Ba6 9.Qh5 g6 10.Qe2 c6 11.d4+=; B) 7.Bc4 Ba6 8.Qh5 g6 9.Qf3 Ra7 10.Qe4 Bb7 11.Qg4+=; C) 7.Qh5 g6 8.Qf3 c6 9.Bc4 Ba6 10.Ba6 Ra6 11.d4=.

6.Bc4 ab5 7.Bb5 Bd7 8.Bc4 Ra4 9.Bg8 Rg8 10.Qh5 g6 11.Qh7 Rg7 12.Qh6 (12.Qh8 Be6 13.Nc3 Rg4=) 12...c5 (12...Qe7!? 13.d4 Qf7–/+) 13.Nc3 Rb4 (13...Rg4 14.g3=+) 14.Ba3= Rb6?? (better 14...Rc4=) 15.Bc5!+- Kf7?! (15...Bc5 Theme: Deflection from g7 16.Qg7) 16.Bb6 Qb6 17.Nf3 Qb2 (17...Be6 18.Rb1 Qc6 19.Qh4+-) 18.Rb1 Qc2 1–0. aravind555 (1785) – alex7664 (1735), lichess.org, 2020.

5.d4 ab5

6.de5 Ra5 7.Bd3 Be6 8.Nf3 Nc6 9.0-0 b4 10.Nd4+=.

6.de5 b4 7.Bb5 (7.Nf3 Bg4 8.h3 Bh5 9.Bb5 c6 10.Bd3=; 7.Bd3 Be6 8.Nf3 Nc6 9.0-0 fe5 10.Ne5=; 7.Be2 fe5 8.Bb5 Nd7 9.Qd5 c6 10.Qe6=) 7...Nc6 8.Nf3 Bg4 9.h3 Bh5 10.ef6=.

6.de5 c6 7.Nd2 Ba3 8.Ba3 Ra3 9.Bd3 Nh6 10.Ngf3=.

6.de5 c6 7.Bd3 Qa5 8.Nd2 Bb4 9.Qh5 g6 10.Qd1=.

6.de5 c6 7.Bd3 Be6 8.Nf3 Qa5 9.Nbd2+/– Ba3 10.Qb1 (better is 10.Ba3 Qa3 11.Nd4+/–) 10...Nd7= 11.Nd4 Bb2 12.Qb2 Nc5 13.Bf5 (better is 13.Ke2!? Qc7 14.h3 Qe5 15.Qb4+=) 13...Bf5–/+ 14.Nf5 Ne4 15.Qd4 (15.Rd1 Qc3 16.Qb3 A) worse is 16...fe5 17.Nd6 Ke7 18.N6e4 Qb3 19.ab3 (worse is 19.cb3 de4 20.Ne4 Ra2–/+; 19.Nb3? de4 20.Nc5 Nf6–+) 19...de4 20.Ne4=; B) 16...Qb3 17.cb3 Nc3–/+) 15...Nd2–/+ 16.Qd2 Qd2 17.Kd2 g6 18.Nd6 Ke7 19.f4 Nh6 20.e4 (20.Nb7 fe5 21.Nc5 Kd6 22.Nb7 Kc7+=) 20...de4–/+ 21.Rhe1 f5 22.Nb7 Ra3 (22...Ra4 23.Kc3–/+) 23.Re3+= Ra7 (23...Rha8 24.Nc5–/+) 24.Nd6 Nf7 25.Nf7 Kf7 26.Rc3 Rd8 27.Ke2 Ra6 28.h4 (28.Rh3 h5+=) 28...h6 (28...Ke7 29.Rb1+=) 29.Rh1 (29.Rd1 Rd1 30.Kd1 Ra2 31.Rc6 Ra1 32.Ke2 Rh1=) 29...Rd5 (29...b4 30.Rc4+=) 30.a3= g5 (30...h5 31.Rd1=) 31.hg5+= hg5 32.Ke3 c5 33.fg5 Re5 34.Kf4 (34.Rh7 Kg8 35.Rd7 Re8=) 34...Rd5 35.Rh7 Kg8 36.Rb7 c4 37.Rh3 Rc5?? (better is 37...Rd2+=) 38.Rb8+- Kg7 39.a4 (39.Rbh8 Rc8 40.Rc8 Ra7 41.Rch8 Ra3 42.R3h7 Kg6 43.Rb7 Rf3 44.gf3 ef3 45.Rh6) 39...Ra7 (39...Re6 40.Rb7 Kg8 41.ab5+-) 40.ab5 Rd5 (40...Rd7+-) 41.b6 Ra1 (41...Re7 42.g6! Kg6 43.b7+-) 42.Rb7 Kg8 43.Rhh7 Rf1 44.Kg3 Rd8 (44...Rd6 45.Rbg7 Kf8 46.b7+-) 45.Rbg7 Kf8 46.b7 f4 47.Kg4 Rfd1 48.g6 f3 49.Rc7 Kg8 50.Rhg7 Kh8 51.gf3 R1d6 (51...Rg1 52.Kf4 Re8 53.Rge7 Re7 54.b8Q Kg7 55.Re7 Kh6 56.Qh8 Kg6 57.Qg7 Kh5 58.Qh7) 52.Kh5 Rd1 (52...Rd5 53.Kh6 Rh5 54.Kh5 e3 55.Rh7 Kg8 56.Rc8 Rf8 57.b8Q Rc8 58.Qc8) 53.Rh7 Kg8 54.Rc8 R1d5 (54...Rh1 55.Kg5 Rg1 56.Kf6 Rgd1 57.b8Q R1d6 58.Qd6 Rc8 59.Qd5 Kf8 60.Qf7) 55.Kh6 Rd4 (55...Rd1 56.b8Q Rh1 57.Kg5 Rg1 58.Kf5 Rg6 59.Kg6 Rc8 60.Qc8) 56.b8Q Kf8 (56...Rc8 57.Qc8 Rd8 58.Qd8) 57.Qf4 Ke8 (57...Kg8 58.Qf7) 58.Qf7 1–0. Taulien,Hans_Juergen (2350) – Buresch,Rene (1960), remoteschach.de, 2002.

6.de5 c6 7.Bd3 Be6 8.Nf3 Bb4 9.Nbd2=.

6.de5 c6 7.Bd3 Be6 8.Nf3 fe5!? 9.Be5 Nd7=.

6.de5 c6 7.Nf3 Bb4 8.Nbd2 Bg4 9.h3 Bf3 10.Qf3=.

6.de5 fe5 7.Qh5 g6?? 8.Qe5+- Kf7 9.Qh8 Nf6 10.Nd2 Nc6 11.Ngf3 Nb4 12.Ng5 Ke7 13.Qf6 Kd7 14.Qe6# 1–0. tony – martinsen, internet, 2011.

5.d4 ed4

6.Qd4 ab5 7.Bb5 c6 8.Be2 (8.Bd3 b5= 9.Qh4=) 8...Bd6 (8...Na6 9.Qd1=; 8...b5 9.Nf3=) 9.Nf3= Ne7 10.c4 0-0 (10...dc4 11.Qc4 b5 12.Qc2+=) 11.0-0 c5 12.Qd2 dc4 (12...Be6 13.Rd1 Bc7 14.Qc2+=) 13.Rd1+/– Bc7 14.Qc2 Nd7 15.Nc3 Kh8 16.Bc4 Bb8 17.Ne4 Qb6 18.a4 Ng6 19.Bb5 f5 20.Neg5 (20.Rd7?! Bd7 21.Qc3 Rf7 22.Qc5 Qc7 23.Qc7 Bc7 24.Bd7 Rd7+=) 20...Nf6 21.Ba3 Ba7 22.Bc4 Qc7 23.Bb2 Qe7 24.Qb3 h6 25.Nf7 Kh7 26.Nd6 Ne4 27.Nc8 Rfc8 28.Bd5 Rc7 29.Rac1 Kh8 30.Be6 f4 31.Bc4 fe3 32.Qe3 (32.fe3?! Nd6+/–) 32...Nf6 33.Qd2 (33.Qd3 Qe8+-) 33...Rf8 34.Qc2 Qe8 35.Bb5 Qf7 36.Be5 Re7 37.Bd6 Re4 38.Bf8 (38.Bf8 Nf8 39.Rd8+-) 1–0. pcmvr (2795) – huimre (2695), net–chess.com, 2007.

6.Qd4 Bd6 7.Nf3 Ne7 8.Qa4 c6 9.Bd3=.

6.Bd4 c5 7.Bc3 (7.bc6 Nc6 8.Nf3 Bd6 9.Bd3 Nge7 10.0-0=) 7...c4 8.ba6 b5 9.Nf3 b4 10.Bb2=.

6.Bd4 Bd6 7.c4 (7.Nc3 Be6 8.Nf3 c6 9.bc6 Nc6 10.Bd3=; 7.Nd2 Be6 8.c4 dc4 9.Qa4 c5 10.Bc3=; 7.Bd3 ab5 8.Qh5 Ke7 9.Bb5 Na6 10.Kd1=; 7.Nf3 ab5 8.Bb5 c6 9.Bd3 c5 10.Bb2=) 7...dc4 8.Bc4 ab5 9.Qh5 g6 10.Qb5=.

6.Bd4 Be6 7.Ne2 (7.Nh3 Bb4 8.c3 Bd6 9.ba6 Na6 10.Nf4=; 7.Nf3 Nh6 8.Bd3 ab5 9.Bb5 c6 10.Bd3=; 7.Nd2 ab5 8.Bb5 c6 9.Bd3 c5 10.Bb2=) 7...Bb4 8.Bc3 Bd6 9.Nd4 Qd7 10.Bd3=.

6.Bd4 Bf5 7.Nf3 (7.Bd3 Bd3 8.Qd3 Qd7 9.b6 c5 10.Bb2+=; 7.Nd2 c5 8.bc6 Nc6 9.Bc3 Bb4 10.Ne2+=; 7.Nc3 ab5 8.Qf3 Be6 9.e4 c5 10.ed5–/+; 7.Ne2 Bd6 8.Nbc3 ab5 9.Nb5 Nc6 10.Nd6=) 7...Bd6 8.Nh4 Ne7 9.c4 Bb4 10.Bc3=.

6.Bd4 Nh6 7.Nf3 (7.Qh5 g6 8.Qd1 Nf5 9.Bb2 Bb4 10.Bc3=; 7.Nc3 Nf5 8.Rb1 ab5 9.Rb5 Bd6 10.Rd5+=; 7.c4 dc4 8.Bc4 Nf5 9.Nf3 Nd6 10.Qe2=; 7.Bd3 ab5 8.Bb5 c6 9.Bd3 Bb4 10.Bc3=) 7...Nf5 8.Bd3 ab5 9.Bb5 c6 10.Bd3=.

5.d4 e4

6.ba6 Na6 7.c4 (7.Nd2 Be6 8.Ne2 Bg4 9.f3 ef3 10.gf3=) 7...Be6 8.c5 Ne7 9.Nc3 Kf7 10.f3=.

6.c4 a5? 7.Nc3 Be6 (7...Bb4!?+/–) 8.cd5+- Bd5 9.a3 b6 (9...c6+-) 10.Qc2 f5 11.Nd5 Qd5 12.Bc4 Qd6 (12...Qb7 13.Nh3 Nf6 14.Ng5+-) 13.Nh3 Nf6 (13...Qh6 14.Bg8 Rg8+-) 14.Ng5 Kd7 (14...Nd5 15.Qb3 a4+-) 15.Nf7 Qe7 16.Nh8 Ng4 (16...Kc8 17.Nf7+-) 17.Nf7 c6 (17...Kc8 18.Bd5 Ra7 19.Qc4+-) 18.bc6 Nc6 19.d5 Qf7 20.dc6 Ke7 21.Bf7 Kf7 22.Qb3 Kg6 23.Qe6 Kh5 24.Qf5 g5 (24...Kh6 25.h4 Be7 26.Qf4 Kh5 27.Qf7 g6 28.Qh7 Nh6 29.g4 Kg4 30.Qg6 Bg5 31.Qg5 Kf3 32.Rh3) 25.h4 Bh6 (25...Bb4 26.ab4 Rg8 27.hg5 Nh2 28.Rh2) 26.Qf7 1–0. pierred (2750) – mduerr (1700), net–chess.com, 2009.

6.c4 ab5 7.Qh5 g6 8.Qd5 Qd5 9.cd5=.

6.c4 Be6 7.ba6 Na6 8.c5 Ne7 9.Nc3 Kf7 10.Bb5=.

6.c4 Be6 7.Qb3 dc4 8.Bc4 Bc4 9.Qc4 Qd7 10.Nc3=.

6.c4 Be6 7.Nc3 Bb4 8.Qa4 Bc3 9.Bc3 Qd7 10.cd5=.

6.c4 Be6 7.Nc3 Bb4 8.Qb3 Bc3 9.Bc3 dc4 10.Bc4 Bc4 11.Qc4 Ne7 12.Rb1 Qc8 13.Ne2+= b6 14.Nf4 g5? 15.Nh5 Kf8 16.Nf6 a5? 17.d5 Qf5 18.Qc7 Nd5 19.Nd5 Qd5 (19...Nd7 20.Qd6 Kf7 21.Bh8 Rh8 22.Nb6+-) 1–0. Behrmann,Klaus – Clayton,D, Telecomm, 1995.

6.c4 Be6 7.c5 ab5 8.Bb5 c6 9.Be2 b6 10.cb6=.

6.c4 Be6 7.cd5 Bd5 8.Nc3 Bb4 9.Qa4 Bc3 10.Bc3=.

6.c4 Ne7 7.Nc3 ab5 8.cd5 b4 9.Ne4 Qd5 10.Qc2=.

5.Qh5 g6

6.Qh4 Bg7 7.f4 ef4 8.Qf4 ab5 9.Bb5 c6 10.Bd3 Nh6 11.c4 0-0 12.cd5 cd5 13.Nc3 Bf5 14.Bb5 Nc6 15.Nf3 d4 16.Bc4 Kh8 17.Nd5 Ne5 18.Bb3?? Nd3–+ (18...Nd3 19.Ke2 Nf4 20.Nf4 de3 21.de3 Re8–+) 0–1. elsh1403 – cimmermann (1720), internet, 2011.

6.Qh4 ab5

7.f4 Bd6 8.Nf3 ef4 9.Bd3 Be6 10.Bg6 Kd7 11.Nc3 Ne7 12.Bd3 Ng6 13.Qf2 fe3 14.de3 c6 15.Nd4 Ne5 16.Be2 Na6 17.Ne6 Ke6 18.0-0 Kd7 19.Qf6 Qf6 20.Rf6 Raf8 21.Raf1 Rf6 22.Rf6 Nb4 23.Nb5? cb5–+ 24.Bb5 Ke7 25.Rf5 Rf8 26.Rh5 Rf7?? 27.Be5+/– Be5 28.Re5 Kd6 29.Re8 Nc2 30.a4 Re7 31.Rb8?? Ne3=+ 32.a5 Rc7 33.a6 ba6–+ 34.Ba6 Ke5 35.Rb3 Kd4 36.Kf2 Rc2 37.Kf3 Ng2 38.Rd3 Ke5 39.Bb7?? Ne1 40.Ke3 Nd3 41.Kd3 Rh2 42.Ke3 d4 43.Kd3 Rh3 44.Ke2 d3 45.Kd2 Kd4 46.Ba6 Rh2 47.Ke1 Ke3 48.Kd1 Rh1 0–1. elsh1403 (1650) – smatli (1815), internet, 2011.

7.Bb5 c6

8.Bd3 Qb6 9.Bg6?? hg6–+ 10.Qh8 Qb2 11.Nf3 Qa1 12.0-0 Bf5 13.Qg8 Nd7 14.Nh4 Bc2 15.Ng6 Bg6 16.Qg6 Ke7 17.Qh7 Kd8 18.Nc3 Qb2 19.e4 d4 20.Ne2 Qd2 21.Ng3 Qh6 22.Qf7 Qg7 23.Qe6 Qe7 24.Qc4 Bh6 25.Nf5 Qf8 26.h3 Bd2 27.Rb1 Kc7 28.Qe6 Bc3 29.Ne7 Re8 30.Rb7= Kb7 31.Qd7 Ka8?? 32.Nc6+- Re7 33.Qd5 Rd7?? 34.Qd7+- Qb8 35.Qd5 Qb7 36.Qd8 Qc8 37.Qc8 1–0. elsh1403 – shf3 (1810), internet, 2011.

8.Bd3 e4 9.Be2=+ Be7 10.f4? f5?? 11.Qf2=+ Nf6 12.c4 0-0 13.Nc3 Be6 14.Nh3 Bb4 15.cd5 Nd5 16.0-0 Nc3 17.dc3 Bc5 18.Ng5 Ba2?? 19.Rfd1?? Qb6=+ 20.Bc1 Ra5?? 21.Ra2!+- Ra2 22.Bc4 Kg7 23.Qa2 Be3 24.Kh1 Kh6 25.Ba3 Bc5 26.Ne6 Ba3 27.Qa3 Re8 28.Qd6 Na6 29.Qe5 Re7 30.Qf6 Re6 31.Be6 c5 32.Qh4 Kg7 33.Qe7 Kh6 34.Qh4 Kg7 35.Rd7 Kf8 36.Qh6 Ke8+- 37.Rd1 Qe6 38.Qh7 Qe7 39.Qg6 Qf7 40.Qd6 (40.Qd6 Qe7 41.Qd5+-) 1–0. elsh1403 – 1983kar, internet, 2011.

8.Bd3 Be6?? 9.Bg6+= hg6 10.Qh8 Nh6 11.Nf3 Qe7 12.0-0?? Nd7?? 13.Nh4 Bf7?? 14.Qh7?? d4?? 15.Ng6 Bg6 16.Qg6 Qf7 17.Qf7 Nf7 18.ed4 ed4 19.Re1 Nde5 20.Bd4 0-0-0 21.Nc3 Nc4?? 22.Be3 Nfe5 23.d4 Ng4 24.Rad1 Bb4 25.h3?? Nge3+= 26.fe3 Bc3 27.Rf1?? Ne3–/+ 28.Rf6?? Nd1–+ 29.g4 Bd4 30.Kg2 Ne3 31.Kg3 Bf6 32.Kf3 Nd1 33.Kf4 Rh8 34.g5 Bg5! 35.Kg5 Rh3 36.Kg4 Rh2 37.c4 Ra2 38.Kg5 (38.Kg5 b5 39.cb5 cb5 40.Kf4–+). elsh1403 – mag1915, internet, 2011.

8.Bd3 Be7?? 9.Bg6!+/– Kf8 10.Bd3?? Be6?? 11.f4 e4 12.Be2 Qd7?? 13.g4 Na6 14.Nh3 Nb4 15.Bd1 Ra2 16.Ra2 Na2 17.Ng5! h6 18.Ne6 Qe6 19.f5 Qf7 20.Nc3 Nc3 21.Bc3 Rh7 22.Qg3 Rg7 23.Be2 Bd8 24.Qb8 Qc7 25.Qc7 Bc7 26.0-0 h5 27.h3 hg4 28.hg4 Kf7 29.Ra1 Bb6 30.Ra8 Nh6 31.Rb8+/– Bd8? 32.Rb7?? Kf8 33.Rg7 Kg7+/– 34.Ba6 Ng4 35.Bb7 Nh6 36.Bc6 Nf5 37.Bd5 Bc7 38.Be6 Nd6 39.Bb4 Kg6 40.Bd6 Bd6 41.Bd5 f5 42.c4 Kf6 43.Kf2 Ke5 44.Kg3 Bb4= 45.c5?? Bc5 46.Kf2?? Bb4 47.Ke2?? Kd5–+ (47...Kd5 48.d3 Ba5 49.de4 Ke4–+) 0–1. elsh1403 – cimmermann (1700), internet, 2011.

8.Bd3 Be7?? 9.Bg6!+/– hg6 10.Qh8 Kf8 11.f4?? e4? 12.Ne2 Be6 13.0-0 Nd7 14.Ng3 Qe8 15.f5 Bf7 16.fg6 Bg6 17.Nc3 Ne5 18.Nce2 Qf7 19.Rf2 Bh7?? 20.Nf4 Re8?? 21.Be5 fe5 22.Ne6 1–0. elsh1403 – jank61 (1615), internet, 2011.

8.Be2? Be6?? 9.Nf3 Nd7 10.0-0 Bd6 11.a4 Ne7 12.g4 0-0 13.a5 f5?? 14.gf5?? Nf5=+ 15.Qa4?? e4–+ 16.Nd4 Qg5 17.Kh1 Qh4 18.f4 ef3! 19.Nf3 Qh3 20.Rg1 Nh6?? 21.Qh4?? Rf3–+ 22.Qh3 Rh3 23.Rg2 Nf5 24.Bg4 Rh4 25.h3 Ng3 26.Kg1?? Bg4 27.hg4 Rg4 28.d3 Rf8 29.Nd2 Bc5 30.d4 Bb4 31.Nb3 Bd6 32.Nc5 Nc5 33.dc5 Bc7 34.Rb1 Rf3 35.Bd4 h5 36.Rb7 Rf1 (36...Rf1 37.Kh2 Rh4) 0–1. elsh1403 – alniro (1635), internet, 2011.

4.e3 Bb4

5.a3 Bf8 6.Nf3 Bd7 (6...a6!?+=) 7.c4+/– c6 8.Nc3 e4? (better is 8...Ne7+/–) 9.Nd4+- c5 10.Nde2 b6 (10...d4 11.Ne4 Qe7+-) 11.Nf4 d4 12.Ne4 f5 13.Qh5 (13.Qf3!? fe4 14.Qe4 Ne7 15.Qa8 Nbc6 16.Qd8 Nd8 17.ed4 cd4+-) 13...g6 14.Ng6! fe4 (14...hg6 15.Qg6 Double attack (15.Qh8 Pinning; 15.Qh8 Deflection)) 15.Nh8 Ke7 16.Qh7 Kd6 17.Nf7 (17.Nf7 Kc7 18.Nd8+-) 1–0. pierre – anony, internet, 2015.

5.c3 Be7 6.d4 ed4 7.cd4= Bf5 8.Bd3 Bd3 9.Qd3 c6 10.bc6 Nc6 11.Nf3 Qa5 12.Nc3 Qb4 13.0-0-0 Rd8= 14.Rhe1 Qc4 15.Qc4+= dc4 16.Kb1 Bd6 17.e4 Nge7 18.d5 Nb4 19.Nb5 Nd3= 20.Re2 a6 21.Nbd4 Rc8 22.Ne6 Rg8 23.g3 b5 24.Nfd4 h6 25.f4 b4 26.Rc2 Nb2 27.Rb2 c3 28.Rf2 g6 29.Nc2 a5 30.Ne3 Kf7 31.Ng4= Rh8 32.Ne3?? Bc5= 33.Nc5 Rc5 34.d6 Nc6 35.d7 Rd8=+ 36.f5 Ne5 37.fg6 Kg6 38.Rd6 Nd7 39.Ng4 h5 40.Nf6= c2?? 41.Rc2+- Nf6 42.Rd8 Re5 43.Rc6 Kf7 44.Kb2 Re4 45.Rc7 Ke6 46.Rd2 a4 47.Rc6 Ke7 48.Rb6 Ng4 49.h3 Nf6 50.Ra6 a3 51.Kb3 h4 52.g4 Rf4 53.Ra7 Ke6 54.Re2 Kd6 55.Ra6 Kd5 56.Rc2 Ke5 57.Ra5 Kd6 58.Rd2 Ke6 59.Re2 Kd6 1–0. Psion – Psion, 2'', 1989.

5.Nc3 c6 6.d4 (6.a3 Bc5=) 6...ed4 (6...Qa5 7.Qd2=+) 7.ed4 (7.Qd4 c5 8.Qh4 Ne7=) 7...Qe7=+ 8.Qe2 Bf5 9.0-0-0 Qe2 10.Be2 Ne7 11.Nf3 a6 12.ba6 (12.b6 Nd7 13.Na4 0-0-0=+) 12...Na6–/+ 13.Bd3 Bg4 14.h3 Bf3 15.gf3 Nc7 16.Kb1 Kf7 17.Rdg1 Ne6 18.Ne2 g6 19.h4 Bd6 20.h5 g5 (20...b5 21.Re1–/+) 21.Re1=+ Ra4 22.Rhg1 h6 (22...Rha8 23.Nc3 Rb4 24.Bh7 Nd4 25.Bd3=+) 23.Bg6 Ng6 24.hg6 Ke7 25.Rh1 (25.f4 gf4 26.Nc1 h5–/+) 25...Kd7 26.Rh3 (26.Rh5 Ng7 27.Rh3 h5–/+) 26...h5–/+ 27.Ng3? (27.Rg1 Rg8–/+) 27...Ng7 (27...h4 28.Rg1–+) 28.f4 (28.Ne2 Rh6 29.f4 Rg6–+) 28...Bf4–+ 29.Ne2 Bd6 30.Rf3 f5 31.Nc3 Raa8 32.Bc1 (32.Rg1 g4 33.Re3 Rh6–+) 32...f4 33.Ne2 Rh6 (34.Rb3 b5–+ (34...Rg6?! 35.Rb7 Kc8 36.Rf7–+)) 0–1. Rossbach – Diener,Rudolf, corr SOK–89–36, 1989.

5.Nc3 Ne7 6.Nf3 (6.a3 Ba5=) 6...c6 (6...Bg4 7.h3 Bh5 8.Be2=+) 7.bc6 (7.a3 Bd6=) 7...Nbc6=+ 8.Bb5 (8.a3 Bd6=+) 8...0-0 9.0-0 a6 10.Be2 b6 11.a3 Ba5 12.Na2 e4 (12...Bf5 13.c4=+) 13.Nd4 Nd4 14.Bd4 Re8 15.Nb4 ½–½. Woschkat,Karl_Heinz – Behrmann,Klaus, compuserve, 1996.

5.Nc3 Bf5 6.a3 Ba5 7.Nf3 =.

5.Nf3 Ne7 6.Be2 c5 7.0-0 Be6 8.d3 Qc7 9.c3 Ba5 10.Nbd2 Nd7 11.a4 Rd8 12.Rc1 Nb6 13.Ra1 c4 14.d4 Ng6 15.e4 0-0 16.Qc2 Nd7 17.de5 fe5 (17...Nf4!? 18.Rae1 Ne5+=) 18.Ng5+= Nc5 (18...Bf7 19.Ba3 Nf4 20.Bf3+=) 19.Ba3 (19.Ne6 Ne6 20.ed5 Nef4 21.Bc4 Nd5+-) 19...Rf6 (19...Nf4!? 20.Bc5 Qc5 21.Ne6 Ne6 22.ed5 Nf4 23.Bc4 Bc3+/–) 20.Bc5 Qc5 (20...Nf4 21.Rae1 Qc5 22.ed5 Bf5+=) 21.Ne6+- Re6 22.ed5 Rd5? (better is 22...Nf4 23.de6 Ne2 24.Kh1 Nc3+-) 23.Bc4 (23.Nc4?! Nf4 24.Na5 Qc3+-) 23...Nf4 24.Bd5 Qd5 25.Ne4 Rg6 26.Rad1?? (26.g3 Qc4+-) 26...Qe6?? (better is 26...Rg2 27.Kh1 Qe6=) 27.Rd6?? (better is 27.g3+-) 27...Rg2 28.Kh1 Qh3 (28...Rh2 29.Kh2 Qh3 30.Kg1 Qg2) 29.Rh6 (29.Qa2 Kh8 30.Rd8 Bd8 31.Qg8 Kg8 32.Nf6 gf6 33.Rd1 Qh2) 29…Rh2 (29...Rh2 30.Kg1 Qg2) 0–1. Mauron,Regis – Vedrunes,Jean (1755), Montigny le Bretonneux Noel op, 2008.

5.Qh5 g6 6.Qh4 (6...Qe7 7.Nc3=). Taulien,Hans_Juergen – Osswald,Heiner, remoteschach.de, 2002.

5.a3 Ba5

6.Bc3 Bc3 7.Nc3=.

6.c4 c6 A) 7.Nc3 A1) 7...Bf5 8.bc6 (8.cd5 cd5 9.d4 Nd7 10.de5 Ne5 11.Rc1=; 8.d4 Ne7 9.de5 fe5 10.Nf3 cb5 11.cb5=; 8.Nf3 Ne7 9.d4 Nd7 10.Be2 dc4 11.Bc4=) 8...bc6 9.cd5 cd5 10.Bb5 Bd7 11.Qg4=; A2) 7...Be6 8.bc6 (8.cd5 cd5 9.Nf3 Nd7 10.Rc1 Ne7 11.d4=) 8...bc6 9.cd5 cd5 10.Bb5 Nd7 11.f4=; A3) 7...Nh6 8.bc6 (8.Qh5 Nf7 9.cd5 cd5 10.Rc1 Be6 11.d4=; 8.cd5 cd5 9.Qh5 Nf7 10.Rc1 0-0 11.Bd3=; 8.Rc1 Bg4 9.f3 Be6 10.bc6 bc6 11.cd5=; 8.Nf3 0-0 9.cd5 cd5 10.Rc1 Nf7 11.Qb3=) 8...bc6 9.cd5 cd5 10.Rc1 Be6 11.Qa4=; A4) 7...a6 8.ba6 (8.bc6 bc6 9.cd5 cd5 10.Qa4 Bd7 11.Qb3=) 8...ba6 9.Nf3 Ra7 10.cd5 cd5 11.Qa4=; A5) 7...Ne7 8.Nf3 (8.cd5 cd5 9.Qh5 g6 10.Qf3 Bf5 11.Rc1=; 8.bc6 Nbc6 9.cd5 Nd5 10.Qh5 g6 11.Qh6+=; 8.Qh5 g6 9.Qf3 0-0 10.cd5 cd5 11.Rc1=) 8...Be6 9.cd5 Nd5 10.Qc2 a6 11.ba6=; B) 7.bc6 B1) 7...Nc6 8.cd5 (8.Nc3 Nge7 9.cd5 Nd5 10.Qh5 g6 11.Qh6+=) 8...Qd5 9.Nc3 Qd8 10.Bc4 Nge7 11.Qb3=; B2) 7...bc6 8.Bc3 (8.cd5 cd5 9.Nc3 Ne7 10.Qh5 g6 11.Qf3=; 8.Nc3 Ne7 9.cd5 cd5 10.Qh5 g6 11.Qf3=; 8.Nf3 Ne7 9.Nc3 Bf5 10.cd5 cd5 11.Bb5=; 8.Nh3 Bf5 9.cd5 cd5 10.Nc3 Ne7 11.g4+=) 8...Ne7 9.d4 0-0 10.Nf3 Nd7 11.Ba5=; C) 7.Bc3 Ne7 8.Qh5 (8.Ba5 Qa5 9.Qh5 g6 10.Qf3 Bf5 11.Nc3+=) 8...g6 9.Qf3 Bf5 10.Ba5 Qa5 11.Nc3=; D) 7.Qh5 g6 8.Qd1 (8.Qf3 Be6 9.cd5 Bd5 10.e4 Be6 11.Be2+=; 8.Qh4 Bf5 9.Nc3 d4 10.ed4 ed4 11.Ne4=; 8.Qe2 dc4 9.Qc4 a6 10.bc6 Nc6 11.f4+=) 8...Ne7 9.Nc3 Be6 10.Qf3 Nd7 11.bc6=; E) 7.Nf3 E1) 7...cb5 8.cb5 Bf5 9.Be2 Ne7 10.0-0 0-0 11.Nc3=; E2) 7...Bg4 8.cd5 (8.h3; 8.bc6; 8.Nc3; 8.Be2) 8...Qd5 9.Qa4 Bf3 10.gf3 b6 11.Rg1+=; E3) 7...Ne7 8.cd5 (8.Nc3 Be6 9.cd5 Nd5 10.Qc2 a6 11.ba6=; 8.Be2 dc4 9.Bc4 cb5 10.Bb5 Nbc6 11.0-0=; 8.Bc3 0-0 9.cd5 cd5 10.d4 Bg4 11.Be2=; 8.Qa4 a6 9.bc6 Nbc6 10.Qb3 Be6 11.Nc3+=) 8...Nd5 9.Qb3 e4 10.Nd4 c5 11.Ne2=; E4) 7...Nh6 8.bc6 (8.cd5 cd5 9.Be2 a6 10.0-0 ab5 11.d4=; 8.Nc3 0-0 9.cd5 cd5 10.Rc1 Be6 11.d4=; 8.Be2 dc4 9.Bc4 Nf5 10.Qc2 Nd6 11.Bd3=; 8.Bc3 0-0 9.bc6 Nc6 10.cd5 Qd5 11.Ba5=) 8...Nc6 9.Qb3 dc4 10.Bc4 Rb8 11.Nc3=; E5) 7...Bf5 8.cd5 (8.Nc3 Ne7 9.Rc1 Nd7 10.cd5 Nd5 11.Be2=; 8.Be2 Ne7 9.cd5 Nd5 10.Qb3 Nd7 11.Nc3=; 8.bc6 Nc6 9.Qb3 Be4 10.cd5 Bd5 11.Qb7=; 8.Bc3 Ne7 9.Ba5 Qa5 10.Nc3 Nd7 11.Be2=) 8...cd5 9.Nc3 Ne7 10.Rc1 0-0 11.Be2=; F) 7.cd5 F1) 7...Qd5 8.Nc3 Qd8 9.Nf3 a6 10.ba6 Na6 11.d4=; F2) 7...cd5 8.Be2 (8.Nf3 Bf5 9.Be2 Ne7 10.0-0 0-0 11.Nc3=; 8.Nc3 Bf5 9.d4 Nd7 10.de5 Ne5 11.Rc1=; 8.Qh5 g6 9.Qd1 Ne7 10.Nf3 Bg4 11.Be2=; 8.f4 ef4 9.ef4 Bf5 10.Nc3 Ne7 11.Rc1+=) 8...Bf5 9.Nf3 Ne7 10.0-0 0-0 11.Nc3=.

6.c4 Be6 7.cd5 Bd5 (7...Qd5 8.Nc3 (8.Qa4 Qb3 9.Qb3 Bb3 10.Bc3 Bb6 11.d4=; 8.Nf3; 8.Bc3) 8...Qd7 9.Nf3 Ne7 10.d4 e4 11.Nd2=) 8.Nc3 (8.Qg4 Qd7 9.Qa4 b6 10.Nc3 Be6 11.Nf3=; 8.Qa4 c6 9.Nc3 Be6 10.Bc4 Bc4 11.Qc4=; 8.Qh5 g6 9.Qe2 Nd7 10.Nc3 Nc5 11.f3+=) 8...Ne7 (8...Be6 9.Nf3 Ne7 10.d4 Nd5 11.Qc2=) 9.Nd5 Qd5 (9...Nd5 10.Qb3 Qd7 11.Bc3+=) 10.Nf3 e4 (10...a6 11.Qc2= (11.ba6 e4 12.Nd4 Na6 13.Qc2=)) 11.Nd4+= c5 12.Nb3 Bc7 13.Rc1 Nd7 14.Rc4 0-0 (better is 14...Nf5!?+=) 15.Qc2+/– Qd6 16.Qe4 b6 17.d4 Rfd8 18.Qc2 f5 19.dc5 bc5 20.Nc5 Nc5 21.Rc5 Bb6 22.Bc4 (22.Rc4!?+/–) 22...Kh8 23.Re5 Ba5 24.Ke2 Qd2 25.Qd2 Rd2 (25...Bd2?? 26.Re7 Rg8 27.Bg8 Kg8 28.Rg7 Kf8 29.Kd2+-) 26.Kf3 Ng6 27.g3 (better is 27.Bd4!? Bc7 28.Rf5 Nh4 29.Kg4 Nf5 30.Kf5+=) 27...Rb2+= 28.Rf5 Rd2 0–1. Bonetti,Shane – compfirepower (2225), ICC, 2002.

6.c4 Ne7 A) 7.cd5 Nd5 8.Qh5 (8.Nf3 Be6 9.Nc3 c6 10.e4 Nc3 11.dc3=; 8.Nc3 Be6 9.Nf3 c6 10.Qc2 a6 11.ba6=; 8.Qb3 c6 9.Bc4 Nb6 10.Bf7 Kf8 11.Bc3=; 8.Ne2 a6 9.Nec3 ab5 10.Bb5 c6 11.Bd3+=) 8...g6 9.Qh6 Bf5 10.Nc3 Qd7 11.Nf3=; B) 7.Qa4 c6 8.Bc3 (8.Nc3 a6 9.bc6 Nbc6 10.cd5 Nd5 11.Qc2+=; 8.Nf3 a6 9.bc6 Nbc6 10.Qb3 Be6 11.Nc3+=; 8.Be2 a6 9.bc6 Nbc6 10.Nc3 dc4 11.Qc4+=; 8.cd5 Nd5 9.Qb3 Nd7 10.Nf3 Qb6 11.Bc4+=) 8...Bc3 9.Nc3 d4 10.Ne4 f5 11.Ng3+=; C) 7.Bc3 Bc3 8.dc3 (8.Nc3 d4 9.Ne4 0-0 10.Nf3 f5 11.Ng3+=) 8...c6 9.Qh5 g6 10.Qf3 Bf5 11.cd5+=; D) 7.Nc3 D1) 7...d4 8.Ne4 (8.ed4 ed4 9.Ne4 0-0 10.Qa4 f5 11.Nc5+=) 8...de3 9.fe3 0-0 10.Nf3 a6 11.Be2=; D2) 7...0-0 8.cd5 Nd5 9.Bc4 Be6 10.Qb3 Bc3 11.dc3+=; D3) 7...Bf5 8.cd5 (8.Nf3 c6 9.cd5 cd5 10.d4 e4 11.Nd2=; 8.d4 Nd7 9.Nf3 c6 10.cd5 Nd5 11.Rc1=) 8...Nd5 9.Nf3 c6 10.Qb3 Nb6 11.Rd1=; D4) 7...c6 8.Qh5 (8.bc6 Nbc6 9.Qh5 g6 10.Qf3 d4 11.ed4+=; 8.cd5 cd5 9.Qh5 g6 10.Qf3 Bf5 11.Rc1=; 8.Nf3 Be6 9.cd5 Nd5 10.Qc2 a6 11.ba6=; 8.Be2 Be6 9.cd5 Nd5 10.Ne4 0-0 11.Nc5=) 8...g6 9.Qf3 0-0 10.cd5 cd5 11.Rc1=; D5) 7...Be6 8.cd5 (8.Qh5 Bf7 9.Qg4 0-0 10.cd5 Nd5 11.Nf3+=; 8.Qa4 c6 9.cd5 Nd5 10.Nd5 Bd5 11.Bc3+=; 8.Nd5 Nd5 9.cd5 Bd5 10.Bc3 c6 11.e4=; 8.d4 dc4 9.de5 Qd1 10.Rd1 fe5 11.Nf3–/+) 8...Nd5 9.Nf3 c6 10.Qc2 a6 11.ba6=; E) 7.Nf3 E1) 7...a6 8.Qb3 (8.Nc3 ab5 9.cd5 Nd5 10.Bb5 c6 11.Be2=; 8.ba6 Na6 9.cd5 Nd5 10.Nc3 Nc5 11.Qc2+=; 8.Bc3 ab5 9.cb5 c5 10.bc6 Nbc6 11.Bb5+=; 8.cd5 Nd5 9.Nc3 ab5 10.Bb5 c6 11.Be2=) 8...ab5 9.cd5 e4 10.Nd4 Qd5 11.Bb5=; E2) 7...c6 8.cd5 (8.Nc3 Be6 9.cd5 Nd5 10.Qc2 a6 11.ba6=; 8.Be2 a6 9.bc6 Nbc6 10.cd5 Nd5 11.0-0+=; 8.Bc3 0-0 9.cd5 cd5 10.d4 Bg4 11.Be2=; 8.Qa4 a6 9.bc6 Nbc6 10.Qb3 Be6 11.Nc3+=) 8...Nd5 9.Qb3 e4 10.Nd4 c5 11.Ne2=; E3) 7...c5 8.cd5 Nd5 9.Qc2 Qb6 10.Bd3 Be6 11.Nc3+=; E4) 7...Bg4 8.cd5 Nd5 9.Qa4 Bf3 10.Qa5 Be4 11.Nc3+=; E5) 7...Be6 8.Bc3 (8.cd5 Nd5 9.Nc3 c6 10.e4 Nc3 11.dc3=; 8.c5 Nd7 9.Qc1 c6 10.Be2 cb5 11.Bb5+=; 8.Qc2 c6 9.cd5 cd5 10.Be2 Bf5 11.Qd1=; 8.Be2 a6 9.cd5 Nd5 10.0-0 ab5 11.Bb5+=) 8...c5 9.d4 Nd7 10.de5 fe5 11.Ng5=; F) 7.Qf3 a6 8.Qh5 (8.Nc3 Be6 9.cd5 Nd5 10.Qh5 Bf7 11.Qg4+=; 8.ba6 Na6 9.cd5 Nd5 10.Qh5 g6 11.Qh6+=; 8.cd5 Nd5 9.Nc3 Be6 10.Qh5 Bf7 11.Qg4+=; 8.a4 Be6 9.cd5 Bd5 10.e4 Be6 11.Bc3+=) 8...g6 9.Qf3 Bf5 10.Nc3 ab5 11.cd5+=; G) 7.Be2 a6 (7...0-0; 7...Be6; 7...c6; 7...dc4) 8.Nc3 (8.ba6 Na6 9.Bc3 Bc3 10.dc3 Nc5 11.Nf3+=; 8.Bh5 g6 9.Be2 dc4 10.Bc4 Nf5 11.ba6+=; 8.cd5 Qd5 9.ba6 Na6 10.Bf3 Qb5 11.Qc2–/+; 8.Qb3 ab5 9.cb5 Bf5 10.Nf3 Nd7 11.0-0+=) 8...ab5 9.cd5 Nd5 10.Bb5 c6 11.Bd3+=; H) 7.Qh5 g6 8.Qf3 Rf8 9.cd5 Nd5 10.Nc3 Be6 11.Rd1=.

6.c4 Bf5 7.cd5= Ne7 (7...Qd5 8.Nc3 Qd7 9.Qa4=) 8.Qa4+= Bb6 9.e4 Bg4 (9...Bg6 10.f3+=) 10.Be2+/– Bd7 11.Nf3 a6 (11...Ng6 12.d4+/–) 12.d4 ed4 13.Nd4 0-0 (13...c6 14.bc6 bc6 15.Qb3 cd5 16.ed5 Bd4 17.Bd4+/–) 14.0-0 Qe8 15.Qb3 Ng6 16.d6 Kh8 17.dc7 Bc7 18.ba6 Qe4 (18...b6 19.Rc1 Qe5 20.Nf3+-) 19.ab7 Ra4 20.Nd2 Qf4 21.N2f3 Re8 (21...Ne5 22.g3 Nf3 23.Bf3+- (< 23.Nf3 Qe4 24.Rfc1 Bb6 25.Qb6 Qe2+-)) 22.Bb5 Ra7 23.Bd7 Nd7 24.Rac1 (24.Ne6 Qd6 25.Bd4+- (25.Nc7?! Qc7 26.Rfe1 Re1 27.Re1 Rb7+-)) 24...Bb8?? (24...Nde5 25.Ne5 Qe5+-) 25.Qf7 Rf8 (25...Rg8 26.Qd7 Ne5 27.Ne5 Be5 28.Nf3 Rb7 29.Qb7 Bb2 30.Qb2+-) 1–0. Lange,Wilfried – Rapp,R, corr TT004 BdF, 1996.

6.Nf3 c5 7.c4 e4 8.Nh4=.

6.Nf3 Bg4=.

5.c3 Ba5

6.c4 Ne7 7.Nf3 Bg4 (7...Nd7 8.Qc2=) 8.Be2 (8.cd5 Nd5 9.Qa4 Bf3 10.Qa5 Bg4+/-) 8...dc4 (8...a6 9.cd5 ab5 10.Bb5 Kf8 11.e4+=) 9.h3 (better 9.Qa4!? c6 10.Qc4+=) 9...Be6= 10.Na3 c3 11.Bc3 (11.dc3!? Qd1 12.Bd1=+) 11...Bc3=+ 12.dc3 Qd1 13.Bd1 (13.Rd1 Ba2 14.Rd2 Bf7-/+) 13...Nd7-/+ 14.0-0 (14.Bb3 Kf7-/+) 14...Nc5 15.Be2 0-0 16.Rfd1 Nd5 17.Bc4 (17.Rac1!?-/+) 17...Nc3-+ 18.Be6 Ne6 19.Rd7 (19.Rd2 Rfd8-+) 19...Rad8 20.Rd8 (20.Re7 Rfe8 21.Re8 Re8-+) 20...Rd8 (20...Nd8?! 21.Nd2-+) 21.Kf1 e4 22.Rc1 (22.Ne1-+) 22...ef3 23.gf3 Na2 24.Rc2 (24.Rc4 Kf7-+) 24...Nb4 25.Rc4 a5 26.ba6 Na6 27.Ke2 Kf7 28.f4 (28.Ra4 Nac5 29.Ra7 Rd5-+) 28...Rd5 29.f3 (29.Rc1 Ra5 30.Nc2 Ra2-+) 29...Rh5 30.Nb5 (30.Rc1-+) 30...Rb5 31.Kd3 (31.h4 Rh5-+) 31...Rh5 32.Ke4 Rh3 (32...Nac5!? 33.Rc5 Nc5 34.Kd4 Ne6 35.Kd3 Rh3 36.Ke4-+) 33.f5 Nec5 34.Kd4 b6 (better 34...Rf3 35.Rc2-+) 35.e4 Rf3 36.Kd5 Rd3 37.Kc6 Rd6 38.Kb5 Ke7 39.Rc1 Kd7 40.Rg1 Ne4 (40...Rd4 41.Rd1 Rd1 42.Kc4 Rd3 43.Kb5 Rd4 44.e5 Rb4) 41.Rg7-+ Kc8 42.Ka6 Nc5 (better 42...Rd5!? 43.Rg8 Kd7 44.Kb7 Nc5 45.Kb8-+) 43.Kb5 Nb3 (43...Rd7!? 44.Rg8 Kb7 45.Kc4-+) 44.Rh7 Kb7 45.Rf7 (45.Kc4 Nd4-+) 45...Rd5 (45...Rd4 46.Re7 Nd2 47.Re6 c6 48.Rc6 Rd5 49.Kb4 Kc6 50.Ka3 Ne4 51.Kb3 Kc5 52.Kc2 Rd2 53.Kc1 Kc4 54.Kb1 b5 55.Ka1 Kb3 56.Kb1 Rd1) 46.Kc4 Rf5 47.Kb3 Rf3 48.Kc4 f5 49.Kd5 Rf1 50.Ke5 f4! 51.Rf4 (51.Ke4-+) 51...Rf4 52.Kf4 b5 53.Ke4 Kb6 54.Kd5 Ka5 (better 54...b4 55.Kc4 Ka5 56.Kb3-+) 55.Kc5 c6! 56.Kd4 (56.Kc6 b4 Passed pawn) 56...b4 57.Kd3 Ka4 58.Kc4 Ka3 59.Kc5 b3 60.Kd6 ½-½. Ravanjac (2300) - elmondi (2195), Rated Blitz game, lichess.org, 2016.

6.d4 ed4 7.ed4 Ne7 8.Nf3 0-0 9.Be2 Re8 10.0-0 Ng6 11.Bd3 Bg4 12.Bg6 hg6 13.Qd3 Nd7 14.Nbd2?? (14.c4=) 14...Kf7 (better is 14...Bf5 15.Ne4 de4 (< 15...Re4 16.Nd2–+) 16.Qc4 Be6–+) 15.c4 dc4 (better is 15...Bd2!? 16.Nd2 Be2=+) 16.Nc4 Bb6 17.Qb3 Be6 18.Rad1 Qe7? (18...Kg8 19.d5 Bf5+=) 19.Qd3?? (better is 19.d5 Bg4 20.d6+- (20.Nb6?! cb6 21.Rfe1 Qd6+/–)) 19...Bc4 20.Qc2?? (better is 20.Qc4 Qe6 21.d5+=) 20...Bd5 (20...Bf1 21.Rf1 Qe6 22.Nh4–+) 21.Rfe1 Qd6 22.Nh4 Re1 23.Re1 Nf8 (23...Ba2?? 24.Qg6 Kf8 25.Nf5+-) 24.Qd3 Qf4 25.g3 Qg4 26.Ba3 g5 (better is 26...Ne6!? 27.Bc5–+) 27.Bf8 gh4 (27...Rf8? 28.Qg6 Kg8 29.Nf5 Qf5 30.Qf5 Ba2 31.d5+-; 27...Kf8 28.Ng6 Kf7 29.Re7 Kg8 30.Re3–+) 28.Qa3 (28…Re8 29.Re7 Kf8 30.Re8 Ke8 31.Qe3 Kd8 32.f3 Bf3 33.Kf2 Bd4 34.Qd4 Qd4 35.Kf3 Qd5 36.Ke3 Qa2 37.gh4 Qh2 38.b6 cb6 39.h5–+; 28.Bc5–+). chevin – jakesh, Live Game Caissa's Web, 2004.

5.c4 Be6

6.Qb3 Ba5 7.cd5+= Bd5 8.Bc4 (better 8.Qa4 c6 9.Nc3+=) 8...Bg2? (8...Ne7!? 9.Nf3 a6=) 9.Bg8 (better 9.Bf7 Kf8 10.Bg8 Rg8 11.Ba3 Qd6 12.Bd6 cd6 13.Qe6+-) 9...Qd6?? (better 9...Qd7 10.Be6 Qd6+/-) 10.Bf7 (better 10.Qf7 Kd8 11.Qg7 Bh1 12.Qh8+-) 10...Ke7?? (better 10...Kd8 11.Ba3 c5 12.bc6 Qc6=) 11.Ba3+- Qa3 (11...Nd7 12.Bd6 cd6 13.Qe6 Kd8 14.Qd6+-) 12.Qa3 (better 12.Na3 Bh1 13.Bg8 Kd8+-) 12...Kf7 13.Qa5 Bh1 (13...Rc8+-) 14.Qc7 Kg6 (14...Ke6 15.f3 Nd7 16.Qc4 Ke7 17.Nc3+-) 15.f3 Rd8 (15...Na6 16.ba6 ba6+-) 16.Qd8 (16.Qd8 Kh6 17.Qc8+-) 1-0. Antares_Sco (1985) - garmaev (2020), Hourly Blitz Arena, lichess.org, 2021.

6.Qb3 c5 7.cd5 Bd5 8.Qc2=.

6.Qc2 dc4 7.Bc4= Bc4 8.Qc4 Qe7 9.Nc3 Bd6 (9...c6 10.Nf3=) 10.Nd5 (10.Ba3 c6 (10...Ba3? 11.Nd5 Qf7 12.Nc7 Kf8 13.Qc2+-) 11.Bd6 Qd6+=) 10...Qd7= 11.a4 a5 (better 11...c6!? 12.Nc3 Ne7=) 12.Rc1+/- Kd8 13.Nf3 (13.Qe4 f5 14.Qh4 Ne7+-) 13...Ne7 14.Ne7 Qe7 15.0-0 Nd7 16.d3 (16.e4 Nc5+/-) 16...Nb6+= 17.Qb3 Kd7 (17...Re8 18.Rfd1+=) 18.Rfd1 h5 (18...Qe6 19.Qc2+/-) 19.e4 h4 20.d4 ed4 (better 20...Qe6!? 21.Qc2 Ke8+/-) 21.Nd4 g6 (21...Ke8 22.Ne6 Rc8 23.Ng7 Qg7 24.Rd6 cd6 25.Qe6 Kf8 26.Rc8 Nc8 27.Qc8 Kf7 28.Qb7 Kg6 29.Qd5+-) 22.Nf3 (better 22.Ne6 Rac8 23.Nc5 Ke8 24.Nb7+-) 22...Rad8?? (better 22...Kc8+/-) 23.e5+- fe5 (23...Kc8 24.ed6 Rd6+-) 24.Ne5 Kc8 25.Ng6 Qh7 (25...Qe4 26.Nh8 Qa4 27.Qe6 Kb8 28.Be5 Qb5 29.Bd6 Rd6 30.Rd6 cd6 31.Qd6 Ka7 32.h3+-) 26.Qe6 (better 26.Nh8 Rd7 27.Qe6+-) 26...Nd7 (26...Kb8 27.Nh8 h3 28.g3+-) 27.Rd6 (better 27.Qd6! Nc5 28.Qc5 Rd1 29.Rd1 Qg6+-) 27...Rhe8 28.Qc4 Nb8 29.Rd8 Rd8 (29...Kd8 30.Be5 c6 31.bc6 bc6 32.Rd1 Kc8 33.Bb8 Qd7+-) 30.Qe6 Nd7 31.Ne5 (31.Be5 Kb8 32.Bc7 Ka8 33.Bd8 Qg7 34.Rc8 Nb8 35.Bf6 Qd7 36.Qd7 Ka7 37.Qc7 Nc6 38.Bd4 Nd4 39.Qa5) 31...Kb8 (31...Qe4 32.h3 b6 33.f3+-) 32.Rd1 Kc8 33.Rd7 (33.Nd7 Qg8 34.Nb6 Kb8 35.Rd8 Qd8 36.Nd7 Kc8 37.Bf6 Qg8 38.Nb6 Kb8 39.Qg8 Ka7 40.Nd7 c5 41.Qb8) 33...Rd7 34.Qd7 Qd7 35.Nd7 Kd7 36.g4 1-0. Mely (2305) - TheShrink (2235), ChessWorld.net, 2016.

6.Qc2 Ne7 7.a3 Ba5 8.cd5 Nd5 9.Bd3=.

6.cd5!? Bd5 7.Nc3=+.

6.Nf3 dc4–/+ 7.Be2 c6 8.bc6 (8.a3 Bd6–/+) 8...Nc6 9.0-0 b5 10.Nc3 a6 11.a4 Rb8 12.ab5 ab5 13.Ra6 (13.d4 Bc3 14.Bc3 b4–/+) 13...Nge7 14.Qa1 (14.d3 Bc3 15.Bc3 b4–+) 14...Ba5 15.Rd1? (better is 15.Rb1!?–+) 15...Bc8 16.Ra5 (16.Rc6 Nc6 17.d3 Qb6–+) 16...Na5 (16...Qa5 17.Qa5 Na5 18.Ra1–+) 17.d3 (17.d4 Nb3 18.Qb1 ed4 19.Nd4 Nd4 20.Rd4 Qa5–+) 17...Qc7 18.Nb5? (18.d4–+) 18...Rb5 19.dc4 (19.d4 ed4 20.Nd4 Rc5–+) 19...Rb7 (better is 19...Nc4!? 20.Qa4 Bd7 21.Be5 Re5 22.Qc4 Qc4 23.Bc4–+) 20.Qa4 Kf7 21.Bc3 Nb3 22.Rb1 (22.e4 Nc5 23.Qc2 Rd8–+) 22...Bd7 23.Qb3 (23.Qa6 Ra7 24.Ne5 fe5 25.Be5 Ra6 26.Bc7 Nd2–+) 23...Rb3 24.Rb3 Rb8 25.Nd2 (25.Ba5 Qa7 (25...Rb3?! 26.Bc7 Rb1 27.Bf1–/+; < 25...Qa5 26.Rb8 Qa1 27.Bf1–+) 26.Rb8 Qb8–+) 25...Be6 (25...Rb3 26.Nb3 Nd5 27.Ba5–+) 26.Rb8 Qb8 27.h4 Nf5 28.g3 Qc7 29.f4 (29.Bd3 Nd6 30.h5 Kg8–+) 29...Ng3 30.Kf2 (30.Bd3 Qd6 31.f5 Qd3 32.fe6 Ke6–+) 30…Ne2 (31.Ke2 Bc4 32.Kd1 Bd3–+) 0–1. Zimmer,Georg – Diener,Rudolf, corr SOK–89–43, 1989.

5.Nf3 Bg4

6.c4 Ne7 7.a3 Ba5 8.cd5 Nd5 9.Qa4 =.

6.Be2 e4 7.Nd4 Be2 8.Ne2 c6 9.a4 a6 10.Nd4 Qc7 11.Ne6 Qd7 12.Nf4 Ne7 13.b6 0-0=+ 14.a5 Rd8 15.Ba3= Ba3 16.Ra3 Ng6 17.Ng6+= hg6 18.d3 Re8 19.0-0 Qd6 20.d4 Nd7+= 21.Qg4 Kf7 22.Qg3 Qg3= 23.fg3 Rh8 24.Nd2 Rh7 25.c4 Rah8 26.h3 Ke7 27.cd5+= cd5 28.Rc3 Kd6 29.Rc7 Rb8 30.Nb3 g5 31.g4 Ke6 32.Rfc1 Kd6? 33.Nc5+- Nc5 34.dc5 Ke6 35.c6 (35.c6 Rhh8 36.cb7+- (36.Rg7?! Rhc8 37.c7 Ra8+-)) 1–0. hal1958 – jsiggy2001, playchess.de, 2002.

6.Be2 Ne7

7.0-0 0-0 8.d3 (8.c4 c6 (8...Bd6 9.cd5 a6 10.Nc3 ab5 11.Nb5 Na6+=; 8...Be6 9.d4 e4 10.Nfd2 c6 11.Qb3 Bd2+=; 8...c5 9.a3 Ba5 10.d4 cd4 11.ed4 e4=; 8...a5 9.cd5 Nd5 10.a3 Be7 11.Qc2 Qd7=) 9.Qa4 Qa5 10.Qa5 Ba5 11.cd5 cd5=; 8.a3 Bd6 (8...Ba5 9.Bc3 Bc3 10.Nc3 a6 11.a4 Qd6=) 9.Nc3 a6 10.h3 Bf5 11.ba6 Na6=; 8.a4 c5 (8...a6 9.d4 ab5 10.de5 Bf3 11.Bf3 fe5=) 9.Bc3 Bc3 10.Nc3 a6 11.Ne1 Bf5+=; 8.h3 Be6 9.a4 a6 10.d4 e4 11.Nfd2 ab5+=) 8...c6 (8...a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6+=; 8...Nd7 9.c4 Nb6 10.Qb3 c5 11.e4 de4=; 8...Be6 9.c4 Nd7 10.d4 e4 11.Nfd2 c5=; 8...Bd6 9.c4 a6 10.d4 dc4 11.de5 fe5=; 8...Re8 9.c4 Be6 10.d4 e4 11.Nfd2 c6=) 9.a4 (9.c4 cb5 10.Qb3 Qd6 11.cd5 Nd7=) 9...Nd7 (9...Qa5 10.c3 Bd6 11.c4 Nd7=) 10.Nbd2 (10.c3 Bd6 11.c4 cb5=) 10...Qb6 (10...Qc7 11.c3 Bd6+=) 11.c4 (11.c3 Bd6=) 11...Rac8 (11...cb5+=) 12.Rc1 Nc5 13.cd5 cd5 14.d4 Na4 15.Rc8 Rc8 (worse is 15...Nc8 16.Qa4 Bd2 17.de5 Bf3 18.Bf3 (18.gf3?! fe5 19.Qb3 Qg6 20.Kh1 Nb6+=) 18...fe5 19.Bd5 Kh8 A) 20.Be5?! Be3 21.Qh4 a6+/– (21...Qb5?? 22.Bg7 Kg7 23.Qg3 Kh6 24.Qe3 Kg6 25.Qe6 Kg7 26.Qe5 Rf6 27.g4+-); B) 20.Qe4 Qb5 21.Qe5+- (worse is 21.Be5 Qb4+-)) 16.Qa4 Bd2 17.Nd2?? (better is 17.de5 Bf3 18.Bf3 (18.gf3?! fe5 19.Qa3 Nf5=) 18...fe5 19.Be5+/–) 17...Be2–+ 18.Re1 (18.Rb1 Bd3 19.Ra1 Qb5 20.Qb5 Bb5–+) 18...Bb5 19.Qd1 (19.Qb3 Qa5 20.Rb1 a6–+) 19...ed4 (19...Qa5 20.de5 Ba4 21.Qe2–+) 20.Bd4 Qa5 21.Nb3 (21.Nf3 Qa2–+) 21...Qb4 22.Nd2? (better is 22.Nc1–+) 22...Ba4 (22...Ba4 23.Qe2 Rc2–+) 0–1. MTBrain – Wall,Bill, Microsoft Gaming Zone, 1999.

7.0-0 a6 8.d4 e4 9.Nfd2 Be2 10.Qe2 0-0 11.c3 Ba5 =.

7.0-0 Bd6 8.a4 0-0 9.Nc3 c5 10.e4 d4 11.Nb1 Be6 =.

7.0-0 Nd7 8.Nc3 0-0 9.a3 Bd6 10.a4 c5 11.a5 a6 =.

7.0-0 Be6 8.d4 e4 9.Nfd2 0-0 10.c4 c6 11.Qb3 Bd2 +=.

7.a3 Ba5 8.Bc3 c6 9.bc6 bc6 10.0-0 Nd7 11.d4 0-0 =.

7.a4 a6 8.h3 Be6 9.0-0 0-0 10.d4 e4 11.Nfd2 f5 =+.

7.c3 Bd6 8.c4 dc4 9.Qc2 Qd7 10.Qc4 Be6 11.Qc2 Nd5 =.

7.Bc3 Bd6 8.Bb2 a6 9.Nc3 ab5 10.Nb5 0-0 11.0-0 c5 =+.

7.Nc3 a6 8.ba6 Na6 9.0-0 0-0 10.a3 Bc3 11.Bc3 Qd6 =+.

7.c4 dc4 8.Qc2 Qd6 9.Qe4 Be6 10.Bc4 Nd7 11.Be6 Nc5 =.

7.h3 Be6 8.0-0 a6 9.a3 Bd6 10.Nc3 0-0 11.ba6 Na6 =+.

4.e3 b6

5.c4 dc4 6.Bc4 Bb7 7.Nf3 Nd7 8.0-0 Qe7 (8...a6 9.d4 ab5 10.Bb5+=) 9.Nh4 (9.d4 c6+-) 9...0-0-0+= 10.Nf5 Qc5 (10...Qe8 11.Nc3+=) 11.Qb3 (better 11.Qa4 e4 12.Nd4+-) 11...Nh6?? (better 11...e4 12.Be6 Qb4 13.Qb4 Bb4 14.Ng7 Kb8+-) 12.Ba3 (better 12.Nh6 Qb4 13.Nf7+-) 12…Qa3 (12...Nf5 13.Bc5 Nc5 14.Qc2+-) 1–0. aravind555 – Lauwtje, lichess.org, 2019.

5.c4 Bc5 6.cd5 White begins to deal mighty blows 6...Qd5 7.Nc3 Qd7 8.Bc4 (8.Ne4 c6+=) 8...Ne7 (8...a6 9.Qh5 Kd8 10.d4 ed4 11.ed4=) 9.Qh5+= g6? (better 9...Ng6+=) 10.Qf3+- Qd6?? (10...c6 11.Ne4 Qf5 12.Nf6 Kd8 13.Qf5 Bf5+-) 11.Ne4 Bb7 (11...Nbc6 12.Nd6 Bd6 13.bc6 f5+-) 1–0. GuestGRDT – GuestCPZS, freechess.org, 2020.

5.d4 e4 6.Qh5 (6.c4 Be6+=) 6...g6= 7.Qh4 (7.Qe2 a6=) 7...Be7 (7...Nh6!? 8.f3 ef3 9.gf3 Nf5–/+) 8.c4= Bb7 (8...f5 9.Qg3=) 9.cd5 Bd5 10.Nc3 f5 11.Qf4?? (better is 11.Qh3=) 11...Bd6–+ 12.Nd5 Bf4 13.Nf4 Qd6 14.Bc4?? (14.Nge2–+) 14...Qb4 15.Kd1 Qb2 16.Rc1 Qf2 17.Bd5 Qe3 18.Ba8 (18.Nge2 g5 19.Ne6 c6 20.bc6 Na6–+) 18...Qf4 19.Ne2 Qd6 20.Bc6 (20.h4 Ne7–+) 20...Nd7 (20...Nc6 21.Rc6 Qd5 22.Rc7 Qa2 23.Rg1–+) 21.Nc3 (21.Ke1 Ne7–+) 21...Qd4 22.Ke2 Ngf6 (better is 22...Qd3!? 23.Ke1 Ne7 24.Bd7 Qd7 25.h4–+) 23.Rhd1 Qc4 (23...Qe5 24.g3–+) 24.Ke1 Qb4 25.Kf1 Rf8 (better is 25...Qb2 26.Ne2–+) 26.Nd5 Nd5 27.Rd5 Rf7 28.Rcd1 Qe7 (better is 28...e3 29.Re5 Kf8 30.Re3 Ne5–+) 29.Rd7 Qd7 30.Rd7 (30.Bd7 Rd7 31.Rc1–+) 30...Rd7 31.Ke2 Ke7 32.Bd7 Kd7 33.a4 (33.Ke3 c5 34.Kd2 f4–+) 33...Kd6 34.Ke3 (34.Kd2–+) 34...Kc5 35.g4 Kb4 36.gf5 gf5 37.Kf4 Ka4 38.Kf5 Kb5 (better is 38...e3 39.Kg5–+) 39.Ke4 a5 40.Kd3 Kb4 41.Kc2 a4 42.Kb1 c5 43.Kb2 c4 44.Kb1 c3 45.h3 a3 46.h4 (46.Kc1 a2 47.Kd1 a1Q 48.Ke2 c2 49.h4 Qc3 50.h5 c1Q 51.Kf2 Q1d2 52.Kf1 Qcc1) 46...Kb3 47.h5 (47.Kc1 a2 48.Kd1 a1Q 49.Ke2 c2 50.Ke3 c1Q 51.Ke4 Qc4 52.Kf5 Qg7 53.h5 Qcg4) 47...a2 48.Ka1 c2 49.h6 c1Q 0–1. Blum,Steffen (1910) – Wieland,Daniel (1695), remoteschach.de, 2009.

5.Nf3 Bb4 6.a3 Bc5 (6...Ba5 7.Bc3=) 7.d4+= Bd6 (7...ed4!? 8.Nd4 Bd4 9.Bd4 Bf5+=) 8.de5+/– fe5 9.Qd5?? (better is 9.c4 Nf6 10.Be5 Be5 11.Ne5+/–) 9...Nf6 (better is 9...Bb4! 10.ab4 Qd5 11.Be5 Qd7–+) 10.Qc4 (better is 10.Qa8 Nbd7 11.Qa7+-) 10...Bb7 (10...Qe7!?+/–) 11.Ne5 (11.Qe6 Qe7 12.Qe7 Ke7 13.Be5 Be5 14.Ne5 a6+-) 11...Be5 (11...Qe7 12.Qc3 0-0+-) 12.Be5 c5 13.Nd2 Nbd7 14.Qe6 Qe7 15.Qe7 Ke7 16.Nc4 Ne5 17.Ne5 Ke6 (17...a6 18.ba6 Ba6 19.Bd3+-) 18.f4 Rad8 19.Bc4 Bd5 20.Bd5 (20.0-0-0!? Bc4 21.Nc4 Ne4+-) 20...Nd5 21.Kf2 g5? (21...Nc3 22.Kf3 Rd2 23.Rhc1+-) 22.g3 (22.Nc6 Rd6+-) 22...Rhf8 (22...Nc3!?+-) 23.c4 Nc3 (23...gf4 24.ef4 (24.cd5?! Ke5 25.gf4 Kd5+/–) 24...Nf4 25.gf4 Rf4 26.Nf3 Rc4 27.Rhe1 Kf6 28.Re3+-) 24.Kf3 Rf5 (24...h5 25.h3+-) 25.Rac1 Na4 26.Rhd1 (26.Nc6 Rd3 27.g4 Rf8 28.f5 Kf6+-) 26...Rd1 27.Rd1 h5 (27...Re5 28.fe5 Nb2 29.Rc1+-) 28.Nc6 (28.Rd8!? Nb2+-) 28...g4 29.Kf2 (better is 29.Kg2 Nb2 30.Rc1+-) 29...Rf7?? (29...Nb2 30.Rd8 Nc4+-) 30.Nd8 Ke7 31.Nf7 Kf7 32.Rd7 (32.Rd2 h4+-) 32...Ke6 (32...Kf6 33.e4 Nb2 34.Ra7 Nc4 35.e5 Kf5 36.Ke2+-) 33.Ra7 Nb2 34.Rh7 Nc4 35.Rh6 Kf7 36.Rh5 Na3 (36...Nd6 37.a4+-) 37.Rh7 Kg6 38.Rb7 Nc4 39.e4 Kf6 40.e5 (40.Ke2 Ke6+-) 40...Kf5 41.Rb8 Ke6 42.Ke2 Kd7 43.Kd3 Na3 (43...Kc7 44.Ra8 Nb2 45.Ke4+-) 44.Rb6 c4 45.Kc3 Kc7 (45...Kc8 46.f5 Kc7 47.Ra6 Nb5 48.Kc4+-) 46.Rc6 (46.Rc6 Kb7 47.Rg6 Nb5 48.Kc4+-) 1–0. GuestHTXH – GuestZHGQ, freechess.org, 2017.

5.Nf3 Nd7 6.c4 Bb7 7.cd5 Bd5 8.Nc3 Bb7 9.d4 e4 10.Nd2 f5 11.Bc4 Ngf6 (11...a6 12.Bg8 Rg8 13.Qb3+=) 12.Qb3+/– Qe7 13.a4 g6 14.Ba3 Qg7 15.Bb2 0-0-0 (15...Qe7 16.a5 c5+/–) 16.a5+/– Kb8 17.Bd5 (better is 17.Qa4!?+-) 17...Nd5+= 18.Nd5 Qf7 (18...Qg8 19.Nf4 Qb3 20.Nb3 Bd6=) 19.ab6 (19.Nb6!? Qb3 20.Nd7 (20.Nb3? cb6 21.Ba3 Ba3 22.Ra3 Bd5–+) 20...Rd7 21.Nb3 Bb4 22.Ke2+=) 19...Nb6 (better is 19...Qd5 20.ba7 Ka8+=) 20.Qa2?? (better is 20.Nb6 Qb3 21.Nd7 Rd7 22.Nb3=) 20...Bd5 (20...Qd5!? 21.Qa5–+) 21.Qa7–/+ Kc8 22.0-0? (better is 22.Rc1!? Rd6 23.Bc3–+) 22...Kd7 23.Rfc1 Rc8 (23...Bd6 24.Qa5–+) 24.Ra6 Kd8 (better is 24...Bb4 25.Rb6 Bd2–+) 25.Rb6= cb6 26.Qb6 Ke8?? (better is 26...Kd7 27.Qa7 Kd8 28.Qb6 Kd7 29.Qa7 Kd8 30.Qb6=) 27.Rc8 Ke7 (27...Kd7 28.Rc7 Ke8 29.Qb8) 28.Rc7 Ke8 29.Qb8 1–0. GuestBBRG – GuestRVGT, freechess.org, 2018.

5.Nf3 e4 6.Nd4 Qd6 (6...a6 7.d3+=) 7.c4 Qb4?? (better is 7...Ne7+=) 8.Ba3+- Qa5 9.Qh5 g6 10.Qd5 Ba3 11.Qa8 (11.Qe4?! Ne7 12.Qa8 Bb2+-) 11...Bb2 12.Qb8 Kd7 (12...Ne7 13.a3 Ba1+-) 13.Nc6 Qa3 (13...Qa4 14.Nc3 Qa3+-) 14.Na3 Ba1 15.Na7 Ne7 16.c5! bc5 17.b6 cb6 18.Bb5 Ke6 19.Bc4 Kd7 20.Bb5 (20.Qb6 Ke8 21.Nc8 Nc8 22.Qc6 Kf8 23.Qc8 Kg7 24.Qc7 Kh6 25.Qf4 Kg7 26.Qe4 Kh6+-) 20...Ke6 21.Bc4 Kd7 22.N3b5 Be5 23.Qb6 Ke8 24.Nd6 Kd7 25.Nab5 Bd6 26.Qd6 Ke8 27.Nc7 Kf8 28.Qf6 1–0. GuestCSJR – GuestYYQB, freechess.org, 2017.

5.f4 Nd7 6.c4 (6.fe5 fe5 7.Nf3 (7.c4 Bb7 8.cd5 Qh4 9.g3 Qe4 10.Nf3=) 7...Bd6 8.c4 Bb7 9.cd5 Bd5 10.Nc3=; 6.Nf3 ef4 (6...Bd6 7.fe5 fe5 8.c4 Ngf6 9.cd5 Bb7 10.Bc4=) 7.Nd4 Nc5 8.ef4 a6 9.Nc3 Ne7 10.ba6=) 6...Bb7 (6...Ne7 7.cd5 (7.fe5 Ne5 8.Be5 fe5 9.Qh5 Ng6 10.Nf3+=) 7...a6 8.Qh5 g6 9.Qf3 Nf5 10.ba6+/–) 7.Qc2 (7.cd5 Bd5 8.fe5 fe5= 9.Nf3 Bd6 10.Nc3=; 7.fe5 fe5 8.Nf3 Bd6 9.cd5 Bd5 10.Nc3=) 7...Bd6 (7...ef4 8.ef4 dc4 9.Qc4+= Bd6 10.Nc3+=) 8.Nh3 (8.cd5 ef4 9.Nc3 Qe7= 10.Kf2=) 8...Ne7 (8...dc4 9.Qc4 a6 10.fe5+=) 9.Be2 (9.fe5 fe5 10.Ng5+=) 9...c5 (9...dc4!? 10.0-0 a6=) 10.0-0= 0-0 11.cd5 ef4 (11...Nd5? 12.Bc4 Kh8 13.Bd5 Bd5 14.Qd3 Bg2 15.Kg2+-) 12.e4 Ng6 13.Na3 Re8 (13...a6 14.d3+=) 14.Bh5 (14.Nc4 Ndf8 15.d4 Rc8+/–) 14...Ndf8+= 15.d3 Be5 16.Nc4 Re7 (16...a6 17.a4+=) 17.Qd2 (17.Qb3 Kh8+/–) 17...Qd7 (17...Bc8 18.Nf2+=) 18.a4+/– a6?? (better is 18...Rd8+/–) 19.Be5 fe5 20.Nb6 (20.Nb6 Qd6 21.Na8 Ba8 22.Qa5+-) 1–0. Rynas – Dutkiewicz, corr Poland, 1979.

5.f4 e4 6.c4 Bf5 (6...Be6 7.cd5 Bd5 8.Nc3+=) 7.Ne2 (7.Nc3 Ne7 8.g4+=) 7...c5 (7...a6!?+=) 8.Ng3+/– Bc8? (better is 8...Bg6!?+/–) 9.Qh5+- g6 10.Qd5 Qd5 11.cd5 Ne7? (11...Nd7+-) 12.Bf6 Rg8 13.Nc3 Nd7 14.Nge4 Bb7 (14...Nf5+-) 15.Nd6 Kd8 16.Nb7 Kc7 17.d6 Kb7 18.Be7 Bg7 (18...Be7 19.de7 Rae8 20.Nd5+-) 19.Bc4 Rge8 (19...Rgb8 20.e4 Kc8 21.e5+-) 20.Bd5 Kb8 21.Bc6 Kc8 22.Ba8 1–0. miec – adriano.bc73, internet, 2009.

5.c4 Bb7

6.Nc3 d4 7.ed4 Qd4 8.Nf3 Qd6 9.Qc2 (9.d4 ed4 10.Nd4 Nd7+=) 9...Ne7 (9...Bf3 10.gf3 c6 11.f4 ef4 12.Qe4 Ne7 13.Ne2=) 10.Be2 Nd7 11.Rd1 (11.Ne4 Qe6=) 11...0-0-0 (11...c5!?=) 12.0-0+= g6 (12...Bf3 13.Bf3 Nc5 14.d3+=) 13.d4+/– ed4 14.Nd4 Bg7? (better is 14...Qe5+/–) 15.Rfe1+- Nc5?! (15...Rde8+-) 16.Nc6 Qe5 (16...Bc6 17.Bg4 f5 18.Rd6 Rd6 19.Re7 Bf6+-) 17.Bg4 f5 18.Ne5 1–0. pcmvr (2870) – arsigval (2010), net–chess.com, 2009.

6.cd5 Qd5!? 7.Nc3 Qd7+=.

6.cd5 Bd5 7.Nc3 Bb7 8.Nf3 c5 9.Bc4+=.

6.cd5 Bd5 7.Nc3 Bb7 8.Nf3 Bd6 9.d4 ed4 (9...Nd7 10.Bc4+=) 10.Nd4+/- (worse 10.ed4 Qe7 11.Be2 Bf3 12.gf3 a6=) 10...Qd7 11.Qb3 Be5 (11...a6!?+=) 12.0-0-0+/- Qf7?? (better 12...a6+/-) 13.Bc4+- Qg6 14.f4 (better 14.Bg8!? f5+-) 14...Bd4 15.Rd4 (15.ed4?! Ne7+/-) 15...Nh6 (15...c5 16.Rd6 Ne7+-) 16.Rhd1 Nc6 (16...c5 17.Rd8 Ke7 18.Rh8 Nd7+-) 17.bc6 Bc6 18.Bd5 (18.Nb5 Qf5 19.Nc7 Kf8 20.Ba3 Qc5 21.Na8 g5 22.Bc5 Kg7 23.Rd7 Kg6 24.Bf7 Nf7 25.f5 Kh5 26.Qf7 Kh4 27.R1d4 Be4 28.Re4 g4 29.Qf6 Kh5 30.h3 bc5 31.hg4) 18...Bd5 (18...0-0-0 19.Be6 Bd7 20.Bd7 Kb8+-) 19.Qd5 Rb8 20.Qe6 Kf8 21.Rd8 (21.Rd8 Rd8 22.Rd8 Qe8 23.Qe8) 1-0. zembelek1 (2175) - A177 (2120), Rated Classical tournament, lichess.org, 2016.

6.cd5 Bd5 7.Nc3 Bb7 8.Nf3 Ne7 9.Bc4 (9.d4 Nd7+/–) 9...Qd7 10.Qb3 (10.0-0 a6+=) 10...a6 11.Bf7 Kd8 12.a4 (12.d4!? Bf3 13.gf3 ed4 14.Rd1+/–) 12...ab5+= 13.Nb5 (13.Qb5!? Ng6 14.Qc4=) 13...Nd5–/+ 14.Bd5 Bd5 15.Qd1 Nc6 16.0-0 Bc5 (16...e4!? 17.Nfd4 Nb4–/+) 17.d4= ed4 18.ed4 (18.Bd4 Bb4=) 18...Be7 (18...Bb4 19.Bc3+=) 19.Re1 Re8 20.Qd3 (20.Nc3 Bf7=) 20...Kc8 (20...Nb4!? 21.Qh7 Bf3 22.gf3 c6=) 21.Qh7= Bf3 (21...Kd8!?=) 22.gf3+= Kb7 23.Qg7?? (better is 23.Qg6+=) 23...Rg8–+ 24.Qg8 (24.Qg3–+) 24...Rg8 25.Kf1 Qh3 26.Ke2 Bb4 27.Rec1 (27.Bc3 Bc3 28.Nc3 Nd4 29.Kd3 Rd8–+) 27...Qe6 28.Kd3 Qb3 29.Bc3 Rd8 (29...Bc3 30.Nc3 Nb4 31.Kd2–+) 30.Rab1 (30.f4–+) 30...Rd4 (better is 30...Qa4 31.Nc7 Bc3–+) 31.Nd4+/– Qd5 32.Rb4 Nb4 33.Bb4 c5 34.Rc4 cb4 (34...cd4!? 35.Rd4 Qf3 36.Kc4 Qf2–/+) 35.Rb4= Ka6 36.a5 (better is 36.Rb5 Qa2 37.h4=) 36...Ka5?? (better is 36...ba5 37.Rc4 Qe5–/+) 37.Rb5+- Qb5 38.Nb5 Kb5 39.h4 Kb4 40.h5 (40.h5 b5 41.h6+-) 1–0. GuestTQXW – EEIT, freechess.org, 2017.

6.cd5 Bd6 7.Qh5 (7.e4 f5 8.ef5 Nf6+/–) 7...g6 8.Qd1 (8.Qf3 a6+/–) 8...Ne7 (8...Bd5 9.Nc3 Bb7 10.Nf3=) 9.Nc3 (9.e4 f5+/–) 9...Nd7 (9...Nd5 10.Qf3 Bc5 11.Bc4 Ne3 12.Qb7 Nc4 13.Nd5 Nb2 14.Nc7 Kf7 15.Na6 Be7 16.Qa8 Nd3 17.Ke2 Nf4 18.Ke1–+) 10.Nf3 (10.Qf3+/–) 10...Nc5? (10...Nd5!? 11.Ne4 Be7=) 11.Bc4 (11.d4 ed4 12.Qd4 0-0+/–) 11...Nf5 (11...e4!? 12.Nd4 Be5+=) 12.0-0+- Qd7?? (12...0-0 13.d3+/–) 13.Qc2 (13.d4 a6+-) 13...0-0-0? (13...Bc8 14.d4 ed4 15.ed4+-) 14.a4 (14.d4 ed4 15.ed4 Nd4 16.Nd4 Qg4+-) 14...Kb8? (14...e4 15.Ne4 Ne4 16.Qe4+-) 15.a5 (better is 15.d4!? e4 16.dc5 ef3+-) 15...Rde8? (15...Bc8+-) 16.ab6 (16.ab6 cb6 17.d4 ed4 18.ed4+- (18.Nd4?! Qc7+-)) 1–0. GuestRMKM – GuestWQTG, freechess.org, 2016.

5.c4 c6

6.a4 Be6 7.Nf3 dc4 8.Qc2 cb5 9.ab5 Qc7? (9...Qc8 10.Ra4=) 10.Be2?? (better is 10.Qe4 Nc6 11.bc6+-) 10...a5 11.Nc3 Nd7 12.d4 Bb4 (12...cd3 13.Bd3 Bb4 14.0-0+= (14.Bh7?? Rh7 15.0-0 Rh6–+)) 13.0-0 Ne7 14.e4 ed4 15.Nd4 Bf7 16.Na4 1–0. Baer,Cy (1895) – Kirstein,Hans, RSS7E–81 remoteschach.de, 2008.

6.cd5 cd5 7.Nc3 Bb7 (7...Be6 8.d4 Bd6 9.de5 fe5 A) 10.Nd5? Bd5 11.Be5 Bb4 (11...Be5?! 12.Qh5 Bf7 13.Qe5 Kf8 14.Nf3–/+) 12.Ke2 Nf6–+; B) 10.Nf3=) 8.Nf3 Nd7 9.Be2 (9.d4 e4 10.Nd2 Rc8+=) 9...Bd6= 10.0-0 Ne7 11.Rb1 0-0 12.Qc2 (12.d4 e4 13.Nd2 f5=) 12...Nc5 (12...Rc8 13.Rfc1=) 13.Na4 (13.d4 Ne6=) 13...Rc8 (13...Na4 14.Qa4 Bc8 15.Rbc1=) 14.Qd1 (14.Nc5 bc5 15.d3 Qc7=) 14...h6 (14...Qc7 15.Kh1=+) 15.Rc1 f5 (15...Ne6!?=) 16.d4 (16.Ne5!? Nd7 17.d4+-) 16...ed4+= 17.Bd4 (17.Nd4 Qd7+=) 17...Ne4 (17...f4 18.ef4 Rf4 19.Nc3=) 18.Ne5 Be5 19.Be5 Ng6 20.Bb2 f4 21.Qd4 The mate threat is Qxg7 21...Rf7 (21...Qf6 22.Qf6 gf6 23.Bg4 fe3 24.Bc8 ef2 25.Rf2 Bc8 26.Rc7 Nf2 27.Kf2+-) 22.Bh5 (22.Rc8 Qc8 23.Nc3 Nc3 24.Bc3 Qf5+-) 22...Rc1 23.Rc1 Qd6? (23...Qg5 24.Bg6 Qg6 25.ef4 Rf4–/+) 24.ef4 (24.f3 Ng5 25.Qd3 Kh7+-) 24...Rf6? (24...Re7!? 25.g3 Nf8+-) 25.Bg6 (25.f3!? Nf4 26.fe4 de4 27.Qd6 Rd6+-) 25...Rg6 26.f5 (26.f3!? Nf6+-) 26...Rf6+- 27.Re1 (better 27.f3 Ng5 28.Qg4+-) 27...Kf8?? (27...Qf8 28.g4+-) 28.g4 (better 28.f3!? Ng5 29.Qd3 Kg8 30.Bf6 Qf6+-) 28...Ng5? (better 28...Qf4 29.h3 Rf7+-) 29.Qe3+- Do you see the mate threat? 29...Rf7 (29...Kg8 30.Bf6 Qf6 31.Qe8 Kh7+-) 30.Qe8 1–0. aravind555 (1710) – MolagaiBajji (1740), lichess.org, 2020.

5.f4 ef4

6.Bd3 g6 7.ef4=.

6.Bd3 Nh6 7.ef4 a6 8.Nc3 Bg4 9.Be2 Be6 10.Nf3 =.

5.Qh5 g6

6.Qd1 Bc5 7.d4 Bd6 (7...ed4 8.Bd4 Bd4 9.Qd4=) 8.c4+= Bb4 (8...Ne7 9.cd5 Bb4 10.Nd2+=) 9.Nc3 (9.Bc3 Bc3 10.Nc3 dc4+-) 9...c6 (9...c5 10.a3 Ba5 11.Nf3 ed4 12.ed4+=) 10.cd5 Qd5 11.a3 Bc3 12.Bc3 cb5 (12...ed4 13.Qd4 Qd4 14.ed4+=) 13.Rb1 (13.de5 Qc6 14.Rc1 Nd7+-) 13...Bd7 (13...ed4 14.Rb5 Qe6 15.Qd4+=) 14.Nf3 (14.de5 Qd1 15.Rd1 Ke7+-) 14...Ne7? (14...e4 15.Nd2=) 15.Be2?? (15.de5 fe5 16.Qd5 Nd5 17.Be5 Rf8+-) 15...Bg4?? (15...e4 16.Nd2 Bc6 17.Bb4=) 16.0-0?? (16.de5 Qd1 17.Rd1 fe5 18.Bb5 Nbc6 19.Ne5 Bd1 20.Kd1 0-0-0 21.Ke2 Ne5 22.Be5 Kb7 23.Bh8 Rh8+-) 16...0-0 (better 16...e4 17.Nd2 Be2 18.Qe2 a6=) 17.de5+- fe5 18.Qd5 (18.Rb5!? Qc6 19.Qb3 Be6 20.Ne5 Bb3 21.Nc6 Nbc6 22.Rb3+-) 18...Nd5+- 19.Be5 Nd7 20.Bd6 (20.Bb5 Rad8 21.Bd4 Bf3 22.gf3 Nc5+- (22...Rf3?? 23.Bc4+-)) 20...Rf6+= 21.Bg3 (21.Bb4 a5 22.Be1 Ne5 23.Rb5 Rd6+=) 21...Nc3= 22.Rb2 (22.Bb5!? Nb1 23.Rb1 Bf3 24.Bd7=) 22...Ne2=+ 23.Re2 Bf3 24.gf3 Rf3 25.Bf4 Rh3 (25...Rf8 26.Ra1=) 26.Rb1 a6 27.Rd2 (27.Rd1 Nc5=) 27...Nc5=+ 28.Rd6 Rb8 (28...Rf8 29.Rb4=) 29.Rg6 hg6 30.Bb8 Nd7 (30...Rh4 31.f4=) 31.Bg3 Rh5 32.Rd1 Ne5 33.Rd6 (33.Be5!? Re5 34.Rd6+-) 33...Nc4= 34.Rg6 Kf7 35.Rc6 Rg5 (35...Rc5 36.Rh6=) 36.Kg2 (36.Rc7 Ke6+-) 36...Rg6 (36...Rc5!? 37.Rh6 a5=) 37.Rc7+- Ke8 38.Ra7 (38.a4 Kd8 39.Kf1 Nd2 40.Ke2 Ne4+-) 38...a5 39.Ra8 (39.Kf3 Na3 40.h4 b4=) 39...Kd7 (39...Kf7 40.e4=) 40.Rh8 (40.e4 Re6 41.e5 Ne5 42.Be5 Re5=) 40...Na3= 41.Rh5 (41.h4!? b4 42.h5=) 41...a4 42.Kf3 Rf6 43.Ke2 Rc6 (43...b4 44.Rh7 Kc6 45.Rc7 Kb5 46.Kd3=+) 44.h4 (44.Rh7 Ke8=) 44...Rc1 (44...b4 45.Rh7 Ke8 46.Kd3=+) 45.Kd3 (45.Rh7 Ke8=). aravind555 – NikMeska, lichess.org, 2018.

6.Qd1 Bd6 7.c4 Be6 8.Qc2 Ne7 9.Nf3 0-0 (9...a6 10.d4 Bf5 11.Qc1=) 10.Be2 (10.cd5 Bd5 11.e4 Bf7+=) 10...Nd7 (10...a6 11.d4 Bf5 12.Qb3 ab5 13.cd5+=) 11.a4 Nc5 (11...c6 12.0-0=) 12.d4+= ed4 13.ed4 (13.Nd4 Qd7+=) 13...Ne4 14.Nbd2 (14.0-0 c6=) 14...Nd2 15.Nd2 dc4 0-1. FERNANDO_2013 (2065) - vassilissa11 (2050), Rated Rapid game, lichess.org, 2020.

6.Qf3 Bf5 7.d3 (7.c4 c6=) 7...e4 (7...a6 8.e4 Be6 9.d4=+) 8.de4 de4 9.Qf4 (9.Qe2 a6=) 9...Bd6=+ 10.Qh4 g5 (10...h5 11.f4=+) 11.Qh5= Bg6 12.Qg4 h5 (12...Qd7!? 13.Qd7 Nd7=) 13.Qe6+= Qe7 14.Qc8 Qd8 15.Qb7 Nd7 16.Bc4 (16.Nd2 Qc8 17.Qc8 Rc8+=) 16...Ne7= 17.Ne2?? (17.Bd4 Qc8 18.Qc8 Rc8=) 17...Rf8?? (better 17...Bb4 18.c3 Nc5 19.Qa8 Qa8 20.cb4 Nd3 21.Bd3 ed3–+) 18.Nd4 (18.Bd4 a5=) 18...Nc5 (18...Bb4!? 19.c3 Nc5=+) 19.Ne6= Nb7?? (better 19...Ne6 20.Be6 a5=) 20.Nd8 (20.Ng7 Kd7 21.Be6) 20...Nd8 (20...Rd8 21.Nd2–+) 21.0-0 c6 (21...Bf7 22.Be2 f5 23.a4–+) 22.bc6 (22.Rd1 Nb7–+) 22...Ndc6 23.Bb5 (23.Nc3 Be5–+) 23...a6 24.Be2 g4 25.Nc3 (25.Na3 Bf7–+) 25...b5 26.Rad1 Be5 27.Ba1 (27.Rd2 Rd8 28.Rd8 Kd8–+) 27...Nb4 (27...Rc8 28.Rb1 Na7 29.Rb3–+) 28.Rd2 Rc8 (better 28...Bc3 29.Bc3 Na2–+) 29.Nd5 (29.a3 Bc3 30.Bc3 Rc3 31.ab4–+) 29...Nbd5 (29...Ned5 30.Be5 fe5 31.a4–+) 30.Be5 fe5 31.Rfd1 (31.a4 ba4 32.Ra1 Nc3–+) 31...Nc3 32.Bf1 (32.Ra1–+) 32…Nd1 (32...Nd1 33.Rd1 Rc2–+) 0–1. aravind555 (1755) – veres_danut (1725), lichess.org, 2020.

4.e3 c5

5.a4 Bd6

6.c4 Be6 7.cd5 Bd5 8.Nf3 Ne7 9.Nc3 Be6 10.Be2 0-0 11.0-0 Qe8 (11...Nd7 12.Ne4 Qc7 13.d4 ed4 14.ed4=) 12.d4 (12.Ne4 Qd7 13.d4 ed4 14.ed4 cd4 15.Nd4+-) 12...Qf7? (better 12...cd4 13.ed4 Nd7+=) 13.Ne4+- Bc7 (13...Nf5 14.de5 Be5 15.Be5 fe5 16.Nfg5+-) 14.Nc5 (14.dc5?! Rd8 15.Qc2 Bb3+-) 14...Kh8? (14...ed4 15.Nd4 Bd5 16.e4+-) 15.Ne6 (15.de5 Bc8+-) 15...Qe6 16.Qc2 (16.Rc1 Rc8 17.de5 Rd8 18.Rc7 Rd1 19.Rd1 Na6 20.ba6 b5 21.ef6 Nd5 22.Rd5 Qd5 23.Rg7 Qg8 24.Ra7 Rf8 25.f7 Qg7 26.Bg7 Kg7 27.ab5 h5+-) 16...Nd7? (16...Nd5 17.Bc4 e4+-) 17.Qc7 (17.Qc7 Rac8 18.Qa5+-) 1–0. BeepBeepImAJeep (2660) – Lavapies (2310), lichess.org, 2015.

6.Ne2 Ne7 A) 7.Nbc3 A1) 7...0-0 8.g3 (8.Nc1 Rf7 9.Be2 Bf5 10.0-0 d4 11.Nb1 Be6 12.f4 Qc7 13.a5+=; 8.a5 Be6 9.f4 Bc7 10.a6 ba6 11.ba6 Bc8 12.fe5 fe5 13.Ng3–/+; 8.Ng3 f5 9.a5 Bc7 10.Nce2 Bd7 11.a6 ba6 12.ba6 f4 13.ef4–/+) 8...Nd7 9.Bg2 Nb6 10.d3 d4 11.Ne4 Nbd5 12.c4 dc3 13.N2c3=; A2) 7...Bg4 8.h3 (8.f3 Be6 9.a5 0-0 10.Kf2 Qd7 11.Ng3 f5 12.Be2 d4 13.ed4–/+; 8.d4 ed4 9.ed4 c4 10.h3 Be6 11.Bc1 0-0 12.Nf4 Bf7 13.Qg4+=; 8.a5 0-0 9.f3 Be6 10.Kf2 a6 11.b6 Nbc6 12.Ra4 Qe8 13.Ng3–/+; 8.Qb1 Be6 9.a5 0-0 10.Ra4 Qd7 11.Ng3 a6 12.Ra1 c4 13.Bc1–/+; 8.Ra2 Be6 9.Ra1 0-0 10.Ng3 f5 11.Qh5 d4 12.Nd1 Nd7 13.a5–/+) 8...Be6 9.Ng3 0-0 10.Be2 Qa5 11.0-0 f5 12.Qe1 Nd7 13.d4+=; A3) 7...Be6 8.Ng3 0-0 9.Be2 Qa5 10.0-0 f5 11.Re1 Nd7 12.Bf3 e4 13.Be2–/+; B) 7.Ng3 B1) 7...Be6 8.Qh5 (8.Nc3 0-0 9.Be2 f5 10.0-0 Qa5 11.Re1 Nd7 12.Bf3 e4 13.Be2–/+; 8.Be2 0-0 9.0-0 a6 10.Nc3 b6 11.f4 ef4 12.ef4 c4 13.Bg4+=; 8.Bd3 c4 9.Be2 0-0 10.0-0 a6 11.Nc3 Qa5 12.f4 ef4 13.ef4+=) 8...Bf7 9.Qg4 0-0 10.Bd3 a6 11.Nc3 e4 12.Be2 Nd7 13.0-0+=; B2) 7...0-0 8.Be2 (8.Nc3 f5 9.a5 Bc7 10.Na4 Nd7 11.b6 Bd6 12.Bb5 ab6 13.Bd7–/+) 8...a6 9.0-0 b6 10.Nc3 Be6 11.f4 ef4 12.ef4 c4 13.Bg4+=; C) 7.a5 C1) 7...0-0 8.c4 (8.Nec3 Be6 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.0-0 Rb8 13.Nb5+=; 8.Nbc3 Bg4 9.f3 Be6 10.Kf2 a6 11.b6 Nbc6 12.f4 c4 13.Ba3–/+) 8...Be6 9.Nec3 Rf7 10.cd5 Nd5 11.Qb3 Nf4 12.Qc2 Ng6 13.Ne4=; C2) 7...Bg4 8.c4 (8.Nbc3 0-0 9.h3 Be6 10.Ng3 f5 11.Qh5 a6 12.b6 Nbc6 13.Nd1–/+; 8.f3 Be6 9.Nbc3 0-0 10.Kf2 Qd7 11.Rb1 a6 12.Na4 Nc8 13.Ba3–/+; 8.h3 Be6 9.Nec3 0-0 10.Qh5 c4 11.Ba3 Ba3 12.Ra3 a6 13.b6+=; 8.d4 cd4 9.ed4 0-0 10.Nbc3 Be6 11.Ba3 Ba3 12.Ra3 a6 13.Qd2–/+; 8.Ra4 Qd7 9.Nbc3 0-0 10.h3 Be6 11.d4 cd4 12.ed4 a6 13.Ng3–/+) 8...dc4 9.Qa4 Bf5 10.Nbc3 Nd7 11.Qc4 Bg6 12.Ne4 Bc7 13.a6=; C3) 7...Be6 8.Nc1 (8.Nbc3 0-0 9.Ng3 Bc7 10.a6 ba6 11.ba6 Ba5 12.e4 d4 13.Na4+=; 8.Nec3 0-0 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.0-0 Rb8 13.Nb5+=; 8.Ng3 0-0 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.Nc3 c4 13.0-0–/+; 8.f4 0-0 9.Nbc3 Bc7 10.a6 ba6 11.ba6 Bc8 12.fe5 fe5 13.Ng3–/+; 8.Ra4 0-0 9.Nbc3 a6 10.b6 Nbc6 11.Ng3 f5 12.Be2 d4 13.Nb1–+) 8...0-0 9.Be2 Qe8 10.0-0 Qg6 11.Bh5 Qh6 12.d3 f5 13.Nd2+=; C4) 7...Bc7 8.Bc3 (8.f4 0-0 9.fe5 fe5 10.e4 d4 11.Ng3 Ba5 12.Bc4 Kh8 13.Rf1–/+; 8.b6 Bd6 9.ba7 Ra7 10.Nec3 Nbc6 11.Qh5 Kf8 12.Nb5 Ra5 13.Ra5+=; 8.Ba3 Nd7 9.Nec3 Ba5 10.Qg4 Kf8 11.Be2 f5 12.Qg3 a6 13.0-0+=; 8.Nec3 Ba5 9.Qh5 g6 10.Qf3 Rf8 11.Be2 h5 12.h3 e4 13.Qg3–/+) 8...d4 9.ed4 cd4 10.Bb4 Nd5 11.Bc5 Nd7 12.Ba3 d3 13.Nec3+=; D) 7.Nec3 D1) 7...Bf5 8.Qf3 (8.e4 de4 9.Qe2 Be6 10.Ne4 0-0 11.Nd6 Qd6 12.Nc3 Nf5 13.Qe4+=; 8.Be2 d4 9.Na2 Qa5 10.Nc1 Nd7 11.0-0 0-0-0 12.Na3 Nb6 13.Nb3+=; 8.Qh5 Bg6 9.Qf3 e4 10.Qg4 Nd7 11.Be2 Be5 12.0-0 d4 13.Nd1+=; 8.a5 d4 9.Na4 Be6 10.Qh5 Bf7 11.Qf3 Bd5 12.e4 Be6 13.Na3+=; 8.f3 0-0 9.e4 Be6 10.ed5 Nd5 11.Bc4 Nf4 12.Be6 Ne6 13.0-0+=) 8...e4 9.Qh5 Bg6 10.Qh4 0-0 11.Be2 Be5 12.0-0 Qd7 13.a5=; D2) 7...Be6 8.Qh5 (8.Bd3 0-0 9.0-0 c4 10.Be2 a6 11.Ba3 ab5 12.Bd6 Qd6 13.Nb5+=; 8.Be2 0-0 9.0-0 Qa5 10.d3 Nd7 11.Nd2 Rad8 12.Nb3 Qc7 13.a5+=; 8.Qf3 0-0 9.Be2 e4 10.Ne4 de4 11.Qe4 Bd5 12.Bc4 Bc4 13.Qc4–/+; 8.Na3 0-0 9.Be2 Nd7 10.0-0 Qc7 11.Re1 Rad8 12.h3 f5 13.a5+=; 8.a5 0-0 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.0-0 Rb8 13.Nb5+=) 8...g6 9.Qd1 Bf5 10.e4 de4 11.Qe2 e3 12.de3 h6 13.Qf3=; D3) 7...0-0 8.e4 Be6 9.ed5 Nd5 10.Bc4 Nf4 11.Be6 Ne6 12.0-0 Nd4 13.Re1=.

6.Ne2 Nh6 A) 7.d4 A1) 7...cd4 8.ed4 0-0 9.de5 Be5 10.Nd4 Nf5 11.Be2 Qa5 12.Bc3 Qc7 13.Qd3+=; A2) 7...Be6 8.dc5 (8.Nbc3 cd4 9.ed4 0-0 10.Qd2 Qa5 11.Rd1 Bb4 12.Ba1 Nd7 13.f4–/+; 8.de5 Be5 9.Nbc3 0-0 10.f4 Bc7 11.Qd3 Ba5 12.Rd1 Re8 13.Ba3+=) 8...Bc5 9.Ng3 0-0 10.Bd3 Bb4 11.c3 Bd6 12.e4 Bc5 13.Qc2=; A3) 7...0-0 8.dc5 (8.Nbc3 cd4 9.ed4 Bb4 10.Ba3 Ba3 11.Ra3 Be6 12.a5 a6 13.Qd2–/+) 8...Bc5 9.Ba3 Ba3 10.Ra3 Be6 11.Rd3 Nd7 12.Nbc3 Nb6 13.Ng3+=; B) 7.Nec3 B1) 7...Be6 8.Qh5 (8.Be2 0-0 9.0-0 f5 10.a5 a6 11.b6 d4 12.Na4 Nc6 13.f4+=; 8.Bd3 0-0 9.Be2 f5 10.d4 cd4 11.ed4 Qh4 12.de5 Be5 13.Qd3–/+; 8.e4 d4 9.Nd5 f5 10.Bc4 fe4 11.Nc7 Bc7 12.Be6 Qg5 13.0-0=; 8.a5 0-0 9.Qf3 Nf7 10.Be2 a6 11.b6 Ng5 12.Qh5 f5 13.h4+=; 8.Na3 0-0 9.Be2 Nd7 10.0-0 f5 11.Qe1 Qc7 12.f3 Nf6 13.Qh4+=) 8...Bf7 9.Qh3 f5 10.Be2 d4 11.Nd1 Qf6 12.0-0 Nd7 13.Na3=; B2) 7...Bg4 8.Be2 Be6 9.a5 0-0 10.0-0 f5 11.a6 ba6 12.ba6 Nc6 13.Na3+=.

6.Ne2 Be6

7.Nec3 A) 7...Nh6 8.e4 (8.Qh5 Bf7 9.Qh4 0-0 10.Be2 d4 11.Nd1 Qd7 12.0-0 a6 13.Re1+=; 8.Bd3 0-0 9.Be2 f5 10.d4 cd4 11.ed4 Qh4 12.de5 Be5 13.Qd3–/+; 8.Be2 0-0 9.0-0 f5 10.a5 a6 11.b6 d4 12.Na4 Nc6 13.f4+=; 8.Na3 0-0 9.Be2 f5 10.0-0 Nd7 11.Qe1 Qc7 12.f3 Nf6 13.Qh4+=; 8.a5 0-0 9.Qf3 Nf7 10.Be2 a6 11.b6 Ng5 12.Qh5 f5 13.h4+=) 8...d4 9.Nd5 f5 10.Bc4 fe4 11.Nc7 Bc7 12.Be6 Qg5 13.0-0=; B) 7...Ne7 8.Qh5 (8.Bd3 0-0 9.0-0 c4 10.Be2 a6 11.Ba3 ab5 12.ab5 Nd7 13.d3+=; 8.Na3 0-0 9.Be2 Nd7 10.0-0 Qc7 11.Re1 Rad8 12.h3 f5 13.a5+=; 8.Be2 0-0 9.0-0 Qa5 10.d3 Nd7 11.Nd2 Rad8 12.Nb3 Qc7 13.a5+=; 8.a5 0-0 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.0-0 Rb8 13.Nb5+=; 8.Qf3 0-0 9.Be2 e4 10.Ne4 de4 11.Qe4 Bd5 12.Bc4 Bc4 13.Qc4–/+) 8...g6 9.Qd1 Bf5 10.e4 de4 11.Qe2 e3 12.de3 h6 13.Qf3=; C) 7...Qa5 8.Qh5 g6 9.Qf3 Qb4 10.Ba3 e4 11.Qd1 Qa5 12.d4 ed3 13.Bd3+=; D) 7...Qd7 8.Be2 (8.a5 Ne7 9.Be2 0-0 10.0-0 a6 11.Na4 Nc8 12.b6 Nc6 13.Nac3+=) 8...Ne7 9.0-0 0-0 10.a5 c4 11.Ba3 Nf5 12.Bg4 d4 13.a6=; E) 7...Nd7 8.a5 (8.Be2 Ne7 9.a5 0-0 10.0-0 Qc7 11.a6 b6 12.h3 Rad8 13.Na3+=) 8...Ne7 9.Be2 0-0 10.0-0 Qc7 11.a6 b6 12.h3 Rad8 13.Na3+=.

7.c4!? A) 7...dc4 8.Na3 (8.Nec3 Qd7 9.Na3 Ne7 10.Bc4 f5 11.d3 0-0 12.Be6 Qe6 13.Qf3=; 8.Qc2 a6 9.Na3 Ne7 10.Nc4 ab5 11.ab5 Ra1 12.Ba1 Nd5 13.Nd6+=; 8.Nc1 Ne7 9.Qc2 Nd7 10.Bc4 Bc4 11.Qc4 Nb6 12.Qg4 0-0 13.Qe6=) 8...Nh6 9.Nc3 Bg4 10.f3 Be6 11.Bc4 Qd7 12.Ne4 0-0 13.Rc1+=; B) 7...Ne7 8.Ng3 (8.Nec3 d4 9.Ne4 0-0 10.Be2 f5 11.Nd6 Qd6 12.d3 f4 13.Bf3=; 8.cd5 Nd5 9.Nec3 Nb4 10.Be2 0-0 11.0-0 a6 12.Na3 ab5 13.ab5+=) 8...0-0 9.cd5 Nd5 10.Bc4 Nc7 11.d3 f5 12.Nd2 Nd7 13.Qf3=; C) 7...d4 8.Ng3 (8.Na3+= Ne7 9.Ng3 de3 10.fe3 0-0 11.Be2 f5 12.0-0 Ng6 13.d3=) 8...f5 9.ed4 cd4 10.Qh5 g6 11.Qe2 Bc7 12.a5 Qd7 13.b6=.

7.d4 Qc7 8.dc5 (8.a5 cd4 9.ed4 Ne7 10.de5 fe5 11.f4 0-0 12.fe5 Bb4 13.Bc3+=; 8.Nd2 cd4 9.ed4 Ne7 10.de5 fe5 11.f4 0-0 12.fe5 Be5 13.Be5+=; 8.de5 fe5 9.e4 d4 10.Ng3 Nf6 11.Nf5 0-0 12.Nd6 Qd6 13.Nd2–/+) 8...Bc5 9.Ng3 Bb4 10.c3 Bc5 11.Bd3 Ne7 12.0-0 0-0 13.Nd2+=.

7.d4 Ne7 8.dc5 Bc5 9.Ng3 0-0 10.Bd3 Bb4 11.Bc3 Bc3 12.Nc3 Qc7 13.Ra3+=

7.d4 Nh6 8.dc5 (8.Nbc3 cd4 9.ed4 0-0 10.Qd2 Qa5 11.Rd1 Bb4 12.Ra1 Nd7 13.Ba3–/+; 8.de5 Be5 9.Nbc3 0-0 10.f4 Bc7 11.Qd3 Ba5 12.Rd1 Re8 13.Ba3+=) 8...Bc5 9.Nec3 Bb4 10.Ba3 Ba3 11.Ra3 0-0 12.Bd3 Nd7 13.0-0+=.

7.Ng3 A) 7...Nh6 8.e4 (8.Nc3 0-0 9.Be2 f5 10.0-0 Qh4 11.Re1 f4 12.ef4 Rf4 13.Bf3+=; 8.Be2 0-0 9.0-0 a6 10.Nc3 f5 11.d4 cd4 12.ed4 e4 13.Re1+=; 8.Qh5 Bf7 9.Qh4 Bg6 10.Bd3 Bd3 11.cd3 0-0 12.Nc3 Be7 13.0-0+=) 8...de4 9.Ne4 0-0 10.Be2 Be7 11.0-0 f5 12.Ng3 Nd7 13.Nc3=; B) 7...Nd7 8.e4 (8.Be2 Ne7 9.0-0 0-0 10.a5 Qc7 11.a6 ba6 12.Ra6 Nb8 13.Ra2+=; 8.Nc3 Ne7 9.a5 0-0 10.Be2 f5 11.0-0 d4 12.Nb1 a6 13.b6+=; 8.a5 Ne7 9.Be2 0-0 10.0-0 a6 11.b6 Rc8 12.f4 ef4 13.ef4=; 8.Qh5 g6 9.Qf3 Ne7 10.a5 h5 11.e4 Bg4 12.Qe3 h4 13.Ne2+=; 8.Bd3 Ne7 9.0-0 0-0 10.a5 c4 11.Be2 Nc5 12.d3 cd3 13.cd3+=) 8...Ne7 9.ed5 Nd5 10.Bd3 0-0 11.Nf5 N7b6 12.a5 Nc8 13.Be4=; C) 7...a6 8.Qh5 (8.e4 Ne7 9.ed5 Nd5 10.Bc4 ab5 11.Bb5 Nc6 12.Bc6 bc6 13.Ne4+=; 8.Nc3 Ne7 9.ba6 ba6 10.Qh5 Bf7 11.Qg4 0-0 12.Be2 Qd7 13.0-0+=; 8.ba6 ba6 9.Nc3 Nc6 10.Rb1 Nge7 11.Be2 0-0 12.0-0 f5 13.Na2–/+; 8.Be2 Ne7 9.0-0 0-0 10.Nc3 b6 11.f4 ef4 12.ef4 c4 13.Bg4+=; 8.d4 cd4 9.ed4 Ne7 10.de5 fe5 11.Qh5 g6 12.Qe2 Nd7 13.f4+=) 8...g6 9.Qf3 e4 10.Qd1 h5 11.Ne2 Nd7 12.Nbc3 Ne7 13.ba6+=; D) 7...Qd7 8.e4 (8.Nc3 Ne7 9.Be2 f5 10.d4 cd4 11.ed4 f4 12.Nf1 0-0 13.a5+=; 8.Be2 Nh6 9.0-0 0-0 10.Nc3 f5 11.a5 d4 12.ed4 cd4 13.Nb1+=; 8.a5 c4 9.Nc3 Bb4 10.f4 ef4 11.ef4 Ne7 12.Qh5 Bf7 13.Qf3–/+) 8...Ne7 9.ed5 Nd5 10.Bc4 0-0 11.Qf3 Nb4 12.Be6 Qe6 13.Na3=; E) 7...Ne7 8.Qh5 (8.Nc3 0-0 9.Be2 Qa5 10.0-0 f5 11.Qe1 Nd7 12.f4 d4 13.fe5+=; 8.Be2 0-0 9.0-0 a6 10.Nc3 b6 11.f4 ef4 12.ef4 c4 13.Bg4+=; 8.Bd3 c4 9.Be2 0-0 10.0-0 a6 11.Nc3 Qa5 12.f4 ef4 13.ef4+=; 8.a5 0-0 9.Be2 Bc7 10.a6 ba6 11.ba6 Nbc6 12.Nc3 c4 13.0-0–/+) 8...Bf7 9.Qg4 0-0 10.Bd3 a6 11.Nc3 e4 12.Be2 Nd7 13.0-0+=.

7.d4 cd4–/+

8.ed4 Qc7 9.a5 Ne7 10.de5 fe5 11.f4 0-0 12.fe5 Bb4 13.Bc3+=.

8.ed4 e4

9.Qd2 Nd7 10.Ba3 Nb6 11.Bd6 Nc4 12.Qb4 Nd6 13.Nf4=.

9.Ng3 Ne7 10.Ba3 0-0 11.Bd6 Qd6 12.c4 dc4 13.Ne4+=.

9.Ng3 f5

10.c4 A) 10...dc4 11.d5 f4 (11...Bb4 12.Bc3 Bc3 13.Nc3+=) 12.de6 Bb4 13.Nc3+-; B) 10...Ne7 11.Nc3 (11.c5 Bc7 12.Qh5 g6 13.Qg5=) 11...0-0+= (11...Bg3 12.hg3 dc4 13.d5=) 12.cd5 Bf7 13.Qb3=.

10.Be2 f4 11.Ne4 de4 12.d5 Qa5 13.Qd2+=.

10.Be2 Nf6 11.c4 A) 11...0-0 A1) 12.Nc3 A11) 12...f4 13.cd5 Bd5–/+ (13...fg3?! 14.de6 gf2 15.Kf1+=); A12) 12...dc4 13.d5–/+; A2) 12.c5 Bc7 13.0-0+=; B) 11...dc4 12.Nd2 Bb4 13.Rc1–/+.

10.Be2 Nf6 11.Nd2? Qc7?? (11...f4 12.Nh5 0-0 13.Ba3–+) 12.Ngf1? (better is 12.Rc1!?+=) 12...f4 13.Ba3 (better is 13.Rc1!? 0-0 14.c4–+) 13...Ba3 14.Ra3 Nbd7 15.Qa1 Rc8 (15...Qc2?? 16.Rc3 Qc3 17.Qc3+-) 16.Bd1 0-0 17.f3 (17.Qb2–+) 17...Rfe8 18.fe4 de4 19.Nb1 Nd5 (19...Qa5 20.c3 e3 21.Bf3–+) 20.g3 (20.Nfd2 N7f6 21.0-0 Ne3–+) 20...N7b6 21.gf4 (21.a5 Nc4 22.Nbd2 Na3 23.Qa3 Nc3–+) 21...Qf4 22.Rg3 (22.c3–+) 22...Rf8 23.Be2 Qc1 24.Bd1 Rf1! 25.Rf1 (25.Kf1 Qd1 Mate attack; 25.Rf1 Ne3 Double attack (25...Ne3 Decoy)) 25...Rc2 (better is 25...Ne3 26.Re3 Qe3 27.Be2 Rc2 28.Rf8 Kf8 29.Qa3 Qa3 30.Na3 Ra2–+) 26.Qa3+= Qa3 27.Na3 Rh2 28.a5 Nd7 29.Rfg1 Nb4 (better is 29...g6!?+=) 30.Rg7+= Kh8 31.R1g2 (31.Be2 Nd3 32.Kd1 Nf2 33.Kd2 Nh3+/–) 31...Nd3 (better is 31...Rh1!? 32.Ke2 Nd5=) 32.Kd2+/– Rh3? (32...Nf6 33.Rg8 Bg8 34.Rh2+/–) 33.R2g3?? (better is 33.Re7 Nf6 34.Re6+-) 33...Rh4?? (better is 33...Nf6+/–) 34.d5!+- Bf5 (34...Bd5 35.Rd7 Deflection) 35.Rg8 1–0. Ilyashyk,Semen – Andrusenko,Pavel, New Years All–Ukrainian Open, Poltava U, 2009.

10.Be2 Nf6 11.Nh5 0-0 12.Nf6 Rf6 13.Ba3+=.

10.Nh5 Qg5 11.Bc1 Qe7 12.Bf4 Bf4 13.Nf4=.

4.e3 Bc5

5.a4 c6 6.Na3 Qd6 7.Nf3 Ne7 8.Be2 Nd7 9.0-0 Nb6 10.d4 ed4 11.Nd4 0-0 12.a5 Na4 13.Bc1 Nf5?? 14.Nf5 Bf5? 15.c4?? Nc3–/+ 16.Qd2 Bb4 17.cd5 Nd5 18.Bc4?? Bd2–+ 19.Bd2 cb5 20.Nb5 Qc5 21.Rfc1 Be6 22.Ba2?? Qb5 23.Rab1 Qa4 24.Bb3 Qd7 25.Bd1 Rac8 26.Bf3 Rc1 27.Bc1 Rc8 28.Bb2 Qb5 29.Be4 Qa5 30.Bd4 Qa2 31.h3 Nc3 32.Bb7 Qb1 33.Kh2 Qb7 34.Bc3–+ Rc3 35.g4 Qb2 36.Kg3 Rc2 37.Kf4 Rf2 38.Ke4 Qb4 39.Kd3 Bc4 40.Kd4 a5 41.g5 Bf1 42.Kd5 Rd2 43.Ke6 Qe4 0–1. poganinbezdom – time2win, internet, 2011.

5.a4 Ne7+= 6.Be2 0-0 (6...Bd6 7.Nf3=) 7.Na3 (7.Nf3 Bf5=) 7...Be6 (7...a6 8.Nf3+=) 8.d4 (8.Nf3 a6+=) 8...Bd6 (8...Bb4 9.c3 Bd6 10.Nf3+=) 9.c4 (9.Nf3 e4 10.Nd2 Qe8+=) 9...Bb4 (9...c5 10.Qd2–/+) 10.Kf1 ed4 (10...Nd7 11.Qb3 Ba5 12.cd5 Bd5 13.Bc4=) 11.ed4 (11.Nc2 Bd6 12.Nd4 Qd7=) 11...Ba3 (11...dc4!? 12.Bc4 Nd5+=) 12.Ba3= dc4 13.Be7 (13.Bf3 c6 14.Qe2 Kf7+/–) 13...Qe7 14.d5 (14.Qc2 a6 15.ba6 Na6 16.Bc4 Kh8+=) 14...Rd8–/+ 15.Bc4 Bf7 (15...c6 16.bc6 bc6 17.de6 Rd1 18.Rd1–/+) 16.Nf3 (16.Qb3 Nd7–/+) 16...c6 17.d6?? (17.Qe2 Qc5–/+) 17...Rd6 (better is 17...Bc4 18.Kg1 Rd6–+) 18.Bf7–/+ Kf7 19.g3 0–1. chessleon – Chapo (1665), internet, 2007.

5.c4 dc4 6.Bc4 Ne7 7.d4 Bb6 (7...Bb4 8.Bc3 Bc3 9.Nc3 ed4 10.Qd4 Qd4 11.ed4=) 8.Nf3 (8.de5 Qd1 9.Kd1 Nd7+-) 8...e4 (8...ed4 9.Nd4 c5 10.bc6 Nec6 11.0-0+=) 9.Nfd2+- Bf5 10.0-0 Nd5 (10...Bg6 11.Nc3 f5 12.Na4+-) 11.Qb3+- c6 12.Nc3 (12.f3 ef3 13.e4 Ne7 14.ef5 Bd4 15.Kh1 Bb2 16.Qb2 fg2 17.Kg2 a6+-) 12...Nc3+- 13.Bc3 (better 13.Bf7 Ke7 14.Bc3+-) 13...cb5?? (better 13...Qe7+-) 14.Bf7+- Kf8 (14...Kd7 15.Qd5 Kc7 16.Qf5 Qe7+-) 15.Bb4 (15.Bb4 Qe7 16.Bd5+-) 1–0. GuestGKNZ – GuestHGLW, freechess.org, 2020.

5.c4 Be6 6.cd5 Bd5 7.Nc3 Be6 8.Nf3 Ne7 9.d4 ed4 10.Nd4 (10.ed4 Bb4 11.Bd3 Nd5+/-) 10...Bf7 (10...Bd4 11.ed4 a6 12.Bd3 ab5 13.Nb5=) 11.Be2 (11.Qg4 Bd4 12.0-0-0 Qd7 13.Rd4 Qg4 14.Rg4 h5 15.Rg7 Nd7+/-) 11...0-0 12.0-0 Nd7 13.Bf3 (13.Ne4 Bb6+/-) 13...Rb8+= 14.Nb3 (14.Qa4 Ne5 15.Rfd1 Qe8+=) 14...Bb6 (14...Bb4 15.a3 Bd6 16.Na5=) 15.Nd5 (15.Ba3 c6+=) 15...Nd5= 16.Bd5 Ne5 17.Bf7 Kf7 (17...Rf7 18.Be5 fe5 19.Qe2=) 18.Be5+= fe5 (18...Qd1!? 19.Rad1 fe5 20.Rd7 Kg8+=) 19.Qh5+/- Kg8 20.Qe5 Rf6 21.Rad1 Qf8 22.Nd4 (22.a4 Qf7 23.a5 Qb3 24.ab6 ab6 25.Qc7 Re8+-) 22...Re8 (22...Qf7 23.Nf3+=) 23.Qd5 Kh8 (23...Qf7 24.Qb7 Qa2 25.h3+/-) 24.Qb7+- Qa3 (24...Qf7 25.a3+-) 25.Qd5 Qb2 (25...Bd4 26.Rd4 a6 27.e4+-) 26.Qb3 (26.Nc6!? g6+-) 26...Qb3 27.Nb3 h6 (27...c6 28.bc6 Kg8 29.Rc1+-) 28.a4 a6 (28...a5+-) 29.Rd5?? (29.ba6!? Ba7+-) 29...ab5? (29...Re3 A) 30.fe3? Be3 31.Rf2 Rf2-+ (31...Bf2?! 32.Kh1=); B) 30.Nc5 Ra3 31.ba6+=) 30.ab5?? (30.a5 Ba7 31.Rb5 Re3 32.Rb8 Kh7+/-) 30...Ra8? (30...Re3!? 31.Nc5 Re2=) 31.Rfd1 (31.g3 c6 32.bc6 Rc6+-) 31...Ra2 (31...Raf8 32.R5d2+/-) 32.R5d2 (32.R1d2 Ra3 33.Rb2 Ra4+-) 32...Ra3 33.Nd4 (33.Rb2 Rf5 34.Nd2 Ra5+-) 33...Ra5+/- 34.Rb1 Ra3? (34...Bd4 35.Rd4 Rb6 36.f4+/-) 35.Kf1 (35.Nc6 Ba5 36.Rd8 Kh7+-) 35...Kh7 (35...Re3 36.Nc6+/-) 36.Ke2 (36.Nf3 Ra4+-) 36...Rg6 (36...Bd4 37.ed4 (37.Rd4?! Ra2 38.Kd3 Rff2+=) 37...Re6 38.Kf1+-) 37.g3+- Rf6 (37...Bd4 38.Rd4 Rb6 39.Rc1 Rb5 40.Rc7 Ra2 41.Rd2 Rd2 42.Kd2 Rb2 43.Rc2+-) 38.f4 (38.Nc6 Rf8+-) 38...Rf8 39.e4 (39.h4 Rfa8+-) 39...Re8? (better 39...Ra4!? 40.Rbd1 Rd8+/-) 40.e5+- Ra4 (40...g5 41.Rb3 Ra4 42.Rbd3+-) 41.Nc6 Re4 (41...Kg6 42.Rbd1+-) 42.Kf3 Re3 (42...Rc4 43.Rbd1 g5 44.f5 g4 45.Kg2+-) 43.Kg2 (43.Kg4 Re4+-) 43...g5 (43...h5 44.Rbb2+-) 44.Rd7 Kg6 45.Ne7 Kh5 (45...Kf7 46.Nd5 Ke6 47.Ne3 (47.Nb6?! cb6 48.Rd6 Kf5+-) 47...Kd7 48.Kf3 gf4 49.gf4+-) 46.Nd5 Re2 47.Kf3 Rf2 48.Ke4 gf4 (48...Rf8+-) 49.Nf6 Kg6 50.Ne8 fg3 51.hg3 (51.Rg7 Kh5 52.hg3 Re2 53.Kf5 Re5 54.Ke5 Bd4 55.Kf5 Bg7 56.Ng7) 51...Re2+- 52.Kd3 (better 52.Kd5 Kf5 53.Ng7 Kg4+-) 52...Re5 (52...Re3 53.Kc4 Kf5 54.Nc7 Re4 55.Kd5 Re5 56.Kc6+-) 53.Nc7 Kh5 (53...Re3 54.Kd2 Kg5 55.Rg7 Kf6 56.Nd5 Kg7 57.Ne3+-) 54.Rd5 (54.Rd5 Rg5 55.Rg5 hg5 56.Nd5+-) 1-0. Pandacmoi (2135) - hoscarua (2215), Rated Blitz game, lichess.org, 2017.

5.c4 Bf5 6.Qf3 Qd7 (6...Ne7 7.cd5 e4 8.Qg3=) 7.Qd5+= Bd6?? (better is 7...Qd5 8.cd5 Ne7+=) 8.Qb7+- Bc2 (8...Be4 9.Qe4 c6 10.d4+-) 9.Qa8 Qg4 (9...c5+-) 10.Qb8 Ke7 11.f3 (11.Na3 Ba3 12.Ba3 Kf7 13.Qc7 Kg6+-) 11...Qe6 12.Nc3 (12.c5 Bb1 13.cd6 Qd6 14.Rb1 Qd8 15.Qa7 Kd7+-) 12...c5 13.Qb7 (better is 13.Qa7 Qd7 14.Qd7 Kd7+-) 13...Ke8 14.Qa7 (14.Qg7 Bg6 15.Qh8 Bf8+-) 14...Nh6 15.Qa8 Kf7 16.Qh8 Qf5 17.a4 (better is 17.e4!? Qg6 18.Qa8 Be7+-) 17...Bd3 18.a5 e4 19.a6 (better is 19.Bd3 ed3 20.a6 Qh5+-) 19...Bb8 20.Qb8 (better is 20.a7 Be5 21.a8Q Kg6+-) 20...ef3 21.Nf3 Bf1 22.Qc7 Kg6 23.Nh4 Kg5 24.Nf5 Bg2 25.Rg1 (25.Qg7 Kf5 26.e4 Be4 27.0-0 Bf3 28.Rf3 Ke6 29.Re3 Kd6 30.Qe7) 25...Kf5 (25...Nf5 26.Rg2 Kh6 27.Qf4 g5 28.Qf5 Kg7 29.Nd5 Kg8 30.Qf6 h5 31.Qg7) 26.Rg2 (26.Qd7 Kg6 27.Rg2 Ng4 28.Qg4 Kf7 29.Qd7 Kf8 30.Rg7 h6 31.Qe7) 26...Ng4 (26...g5 27.a7 Kg6 28.a8Q Ng4 29.Qg8 Kh5 30.Qgf7 Kh6 31.Qh7) 27.Qf4 (27.Qd7 Kg6 28.Qg4 Kf7 29.Qd7 Kf8 30.Rg7 h6 31.Qe7) 27...Ke6 28.Rg4 g5 (28...Kf7 29.Qc7 Ke6 30.a7 Kf5 31.Qd7 Ke5 32.Qd5) 29.Qe4 Kf7 (29...Kd7 30.Qb7 Kd8 31.a7 h5 32.a8Q) 30.Nd5 (30.Qh7 Kf8 31.a7 Ke8 32.a8Q) 30...h5 (30...Kf8 31.Qe7 Kg8 32.Nf6 Kh8 33.Qh7) 31.Qe7 Kg6 (31...Kg8 32.Nf6 Kh8 33.Qf8) 32.Qf6 Kh7 33.Qg7 1–0. nordlicht (2120) – harzer, gameknot.com, 2005.

5.d4 Bb6 6.de5+= c6 (6...Nd7 7.Nf3 Ne7 8.ef6 Nf6 9.Bd3+/–) 7.Qh5 (better is 7.Nc3!?+-) 7...g6+= 8.Qh4 Nd7 9.ef6 Kf7? (better is 9...Ngf6!? 10.Nf3 0-0+=) 10.Nf3+- a6?? (better is 10...Ngf6 11.Nbd2 Re8+-) 11.Ng5 (11.Ng5 Kf8 12.Ne6 Kf7 13.Nd8 Bd8 14.bc6 bc6 15.Nd2+-) 1–0. Hingst,Thomas (2085) – Fankhauser,Daniel (1655), remoteschach.de, 2011.

5.Be2 A) 5...Ne7 6.d4 (6.Nf3 Bd6 7.0-0 a6 8.Nc3 0-0 9.ba6= ; 6.Bh5 g6 7.Be2 Be6 8.Nf3 0-0 9.d4=; 6.a3 a6 7.d4 ed4 8.Bd4 Bd4 9.Qd4+=) 6...Bb4 7.c3 Ba5 8.Nf3 e4 9.Nfd2= ; B) 5...Bf5 6.Nf3 (6.d4 ed4 7.Bd4 Bd4 8.ed4 Ne7 9.Nf3= ; 6.Nc3) 6...Bd6 7.c4 dc4 8.Bc4 a6 9.Nh4+=; C) 5...Nd7 6.Nf3 (6.d4 Bd6 7.c4 dc4 8.Bc4 ed4 9.Bd4= ; 6.c4 Nb6 7.cd5 Nd5 8.Nf3 Nge7 9.0-0=; 6.Bh5 g6 7.Be2 a6 8.d4 Bd6 9.de5=) 6...Ne7 7.d4 Bb4 8.c3 Bd6 9.c4= ; D) 5...Nh6 6.Nf3 (6.d4 ed4 7.Bd4 Bd4 8.ed4 0-0 9.Nf3= ; 6.Bh5 Nf7 7.d4 ed4 8.Bd4 Bd4 9.Qd4=; 6.a3 0-0 7.d4 ed4 8.ed4 Bd6 9.Nc3=) 6...Bd6 7.c4 dc4 8.Bc4 Bg4 9.Nc3=; E) 5...Bd6 6.d4 Be6 7.Nf3 e4 8.Nfd2 f5 9.Ba3=.

5.Be5 Ne7?? 6.Bb2 0-0 (6...a6 7.d4 Bb6 8.c4+=) 7.d4= Bd6 (7...Bb4 8.c3 Bd6 9.c4+=) 8.Nf3+= c5 (8...Be6 9.Nc3+=) 9.bc6 (9.Nc3 a6+/-) 9...Nbc6= (worse 9...Nec6 10.c4+/-) 10.Be2 (10.Nc3 Bg4=) 10...Bg4 (10...Qb6 11.Qc1 Qa5 12.Nc3+=) 11.0-0 Qc7 (11...Qb6 12.Ba3 Bb4 13.h3+/-) 12.h3+= Bh5 13.Ba3 (better 13.Nc3+/-) 13...Ng6?? (better 13...Bb4+=) 14.Bd6 Qd6 15.Nbd2 (better 15.g4!? Bg4 16.hg4 f5 17.gf5 Nge7+-) 15...f5 (15...Nge7 16.c4+/-) 16.c4+- f4 (better 16...Nge7!?+-) 17.cd5 Qd5?? (17...fe3 18.fe3 Na5+-) 18.Bc4 Qc4 1-0. miskob (2100) - jedissson (2105), Rated Blitz game, lichess.org, 2017.

5.Nf3 Bd6 6.c4 (6.d4; 6.Be2; 6.Nc3; 6.a3) 6...c6 7.bc6 bc6 8.d4 e4 9.Nfd2 =.

5.Nf3 e4 6.Nd4 (6.d4) 6...Ne7 7.d3 f5 8.Qh5 g6 9.Qh6 +=.

5.Nf3 Qe7 6.Be2 (6.d4 ed4 7.Nd4 Qf7+=) 6...e4 (6...Be6 7.d4 Bb4 8.c3=) 7.Nd4 Nh6 8.0-0 0-0 9.a4 (9.c4 c6=) 9...c6 (9...Nf5 10.Nf5 Bf5 11.d4 ed3 12.Bd3=) 10.d3 (10.Nc3 Re8=) 10...Bd6 11.de4 Qe5 12.Nf3?? (better is 12.g3 c5 13.Nf5 Qb2 14.Qd5 Nf7 15.Nd6 Qa1 16.Nf7+-) 12...Qb2–+ 13.Nbd2 f5 (13...Rd8!? 14.ed5 cd5 15.c4–+) 14.ed5–/+ cb5 (14...cd5 15.c4–/+) 15.Bb5 (15.ab5 Qc3–/+) 15...a6 (15...Qf6 16.Nc4–/+) 16.Bc4 (16.Be2 Qc3–/+) 16...Nd7 17.Bb3 (17.Be2 Ne5–/+) 17...Ne5 18.Ne5 (better is 18.c4–/+) 18...Be5 (18...Qe5 19.g3–+) 19.Nc4? (better is 19.Ra2 Qc3 20.Nb1=) 19...Qa1–+ 20.Qa1 Ba1 21.Ra1 Rd8 22.Nb6 Rb8 23.Rd1 Nf7 24.d6 Kf8 25.d7+= Ne5 26.dc8Q Rbc8 27.Rd8 Rd8–/+ 28.f4 Ng6 29.Nd5 Ke8 30.Kf2 Kd7 31.h3 Ne7 32.Nc3 Kc7 33.g4+= fg4 34.hg4= Kc6 35.Kf3 1–0. TriAngel – theNOID, ICC, 1999.

5.Nf3 Be7 6.c4 (6.Be2; 6.d4; 6.Nc3) 6...Bf5 7.cd5 Qd5 8.Nc3 Qd6 9.d4 +=.

5.h3 Be6 (5...Ne7 6.d4 ed4 7.ed4+=) 6.d4= Bd6 (6...Bb4 7.Bc3 Qe7 8.a3+=) 7.Nf3 (7.de5!? fe5 8.Be5+=) 7...e4= 8.Nfd2 Nd7 (8...f5 9.Ba3=) 9.c4 c5 (better is 9...f5!?=) 10.cd5+/– Bd5 (10...Bf5 11.Nc4 Bf8 12.d6+/–) 11.Bc4 (11.Bc4 Bc4 12.Nc4+=). gtate (1900) – arsigen (1965), net–chess.com, 2004.

5.c4 c6

6.a4 Be6 7.Qc2 Qd6 8.Nf3 e4 (8...Ne7 9.Nc3 0-0 10.d4=) 9.Ng1 (better is 9.Nd4!? Bd4 10.Bd4+=) 9...Nd7 10.d4 (10.Nc3 Ne7+=) 10...Bb4 (better is 10...ed3 11.Bd3 dc4 12.Bc4 Bb4 13.Ke2 Ne7 14.Be6 Qe6–/+) 11.Bc3= Ne7 12.c5 Bc3 13.Qc3 Qc7 14.f3 (14.Ne2 0-0+=) 14...Bf5 (14...0-0 15.Nd2 Rfe8 16.Kf2–/+) 15.g4 (15.Nd2!? ef3 16.Ngf3=) 15...Be6–/+ 16.Bh3 0-0 17.f4 f5 (17...b6!? 18.Na3–+) 18.g5–/+ b6 19.cb6 Nb6 20.Nd2 Rac8 21.a5 (21.Ne2 Qd7 22.Qb2 Nc4 23.Nc4 dc4–/+) 21...Nd7 (21...Nc4 22.b6 ab6 23.ab6 Qb6 24.Ne2–+) 22.Ne2 (22.Qa3 Rfe8 23.Rc1 Qb8 24.bc6 Nc6+=) 22...cb5–+ 23.Qb4 Nc6 24.Qb5 Rb8 25.Qa4 Rb4 26.Qc2 Rfb8 (26...Rc8!?–/+) 27.0-0+= Rb2 28.Qc3 R2b7 (28...Nf8 29.Ng3 g6 30.Rf2+=) 29.Rfc1= Rc8 30.a6 Rb6 31.Bf1 Ndb8 32.Ng3 Bf7 (32...Qd8 33.Nb3=) 33.Qc5 (33.Nf5 Be6 34.Qc5 h6 (34...Bf5?? 35.Qd5 Qf7 36.Qf7 Kf7 37.Nc4+-) 35.gh6 gh6+/–) 33...Qd8 (better is 33...Qd7!?=) 34.Nf5+/– h6? (34...Qd7 35.Nd6 Rc7+-) 35.gh6+- Qf6 36.Bh3 Kh7 37.hg7 (37.Ne7 Rd8 38.Nc6 Nc6 39.hg7 Qh4+-) 37...Nd7?? (37...Be6 38.Ng3 Ne7 39.g8Q Kg8 40.Qb6 ab6 41.a7+-) 38.Qa3 (better is 38.Qd6 Be6 39.Kf2+-) 38...Qg6?? 39.Kf2 Qh5 40.Kg3?? Qg6= 41.Kf2 Qh5 42.Kg3 Be6 43.Bg4?? Qg6+= 44.h3? Bf5–+ 45.Rc6?? Rbc6 46.Qe7 Rg8 47.Qh4 Kg7 48.Qg5 Bg4 49.Qg4 Kf8 (49...Kf8 50.Qg6 Rcg6 51.Kf2 Rg2 52.Ke1 Rh2–+) 0–1. Baer,Cy (1895) – Decking,Lutz (2195), RSS4D easy–38, 2007.

6.a4 Ne7 7.Qb3 0-0 8.d4 ed4 9.ed4 Bd6 10.Nf3 Be6 (10...Re8 11.c5 Bc7 12.Nbd2=+) 11.Nbd2 (11.c5 Bc7=) 11...dc4 12.Bc4 Bc4 13.Nc4 Kh8 (13...Nd5!?=) 14.0-0+/- White prepares a5 14...Bc7 15.a5 (15.Ba3 Re8+/-) 15...Nd5 16.Rfe1 Nd7 (16...cb5 17.Qb5 Qd7 18.Qd7 Nd7+=) 17.Ne3 (17.Ba3 Rg8+/-) 17...Nf4 (17...Ba5 18.bc6 bc6 19.Rec1=) 18.g3 (18.Ba3 Re8 19.Nf5 Nd5 20.bc6 bc6+/-) 18...Ng6 (18...Ba5 19.gf4 Be1 20.Re1=) 19.Rac1 (better 19.Nc4!?+=) 19...Ba5= 20.Red1 Rc8 (20...cb5 21.Nf5=+) 21.bc6 bc6 22.Qa4 Nb8 23.Nf5 (23.d5 c5=) 23...Bb6=+ 24.Ba3 (better 24.Ne3=+) 24...Re8?? (better 24...Qd5 25.N3h4 Nh4 26.Nh4 Rfe8-/+) 25.Nd6+/- Re2?? (better 25...Qd7 26.Qb3 Rf8 27.Nc8 Rc8+/-) 26.Rc2 (better 26.Nf7 Kg8 27.Nd8 Rd8 28.Qc4 Kh8 29.Qe2+-) 26...Rc2 (26...Re7 27.Nc8 Qc8 28.Be7 Ne7+-) 27.Qc2 (better 27.Nf7 Kg8 28.Nd8 Rc3+-) 27...Rc7? (better 27...Qg8 28.Nc8 Qc8+-) 28.Nf7 (better 28.Re1 Bd4 29.Re8 Qe8 30.Ne8+-) 28...Rf7-+ 29.d5 (29.Re1 Rd7 (29...Bd4?! 30.Nd4 Ne5 31.Qf5-+) 30.Qe4 Qg8-+) 29...Rd7 (better 29...cd5!? 30.Qf5 Rd7 31.Qe6-+) 30.d6 c5! 31.Bc5 Qc8 32.Rd5 (32.Rc1 Bc5 33.Qc5-+) 32...Na6 33.Qf5 (33.Ne1 Nc5 34.Nd3 Nf8-+) 33...Nc5 34.Rc5 (34.h4 Nb7 35.h5 Nf8-+) 34...Bc5 (34...Qc5 35.Qc5 Bc5 36.Nd2-+) 35.h4 Bd6 36.h5 (36.Kg2 Qc6 37.Qe6 Rb7-+) 36...Nf8 (36...Bg3 37.Ne1 Nh4 38.Qe4-+) 37.h6 (37.Kg2 Qc1-+) 37...Qe8 (better 37...Bg3 38.hg7 Kg7 39.Qe4-+) 38.hg7 Rg7 (better 38...Kg7 39.Kg2 Qg6-+) 39.Nh4 (39.Qf6 Bc5-+) 39...Be5 (39...Qe1 40.Kg2 Bg3 41.Qf6 Bh4 42.Qg7 Kg7 43.Kf3 h5 44.Kg2 Qf2 45.Kh1 Qe2 46.Kg1 Bg3 47.Kh1 Qf1) 40.Qf3 (40.Qe4 Rd7-+) 40...Ng6 (40...Ne6 41.Nf5 Ng5 42.Qh1-+) 41.Nf5 Rg8 42.Kg2 (42.Kh2 Ne7-+) 42...Nf4 43.Kh2 (43.Kg1 Qd7 44.Ne3 Qd3-+) 43...Qe6 (better 43...Qc8 44.Qe4 Rg5 45.gf4 Rf5 46.Qf5 Qf5 47.fe5 Qf2 48.Kh1 Qf3 49.Kg1 fe5 50.Kh2 h5 51.Kg1 h4 52.Kh2 h3 53.Kg1 Qg2) 44.Nh6 (44.Qe4 Qa2 45.Qf3 Nd3-+) 44...f5 (44...Qh3 45.Kg1 Rg3 46.fg3 Bd4 47.Qe3 Be3) 45.Ng8-+ Qg8 (better 45...Nd5 46.Qa3 f4 47.Qc1-+) 46.gf4 Qg3 0-1. zembelek (2090) - MisterBiggStuff (2110), Rated Blitz game, lichess.org, 2014.

6.Qb3 d4 7.ed4 Bd4 8.Nc3 Ne7 (8...Nd7 9.Nf3=+) 9.Nf3 0-0 (9...Nf5 10.Be2=) 10.Nd4 ed4 11.Ne4 (11.c5 Kh8 12.Ne4+=) 11...Bf5 (11...Re8 12.Be2 Nf5 13.d3=) 12.Bd3 (12.c5 Kh8 13.Nd6 Bg6 14.Bd4 Nc8+=) 12...Be4 13.Be4 f5 14.Bf3 c5? (better 14...Ng6+=) 15.Bb7+- Nd7 16.Ba8 Qa8 17.0-0 Ng6 18.d3 (18.Rfe1 Rf6 19.f3 Qb8+-) 18...Nh4 (18...Nf4 19.f3+-) 19.f3 Ne5 20.Bc1 (better 20.Qd1+-) 20...Nef3 21.gf3 Nf3 22.Kf2? (better 22.Rf3 Qf3 23.Bg5 Qg4 24.Kh1 Qg5 25.Qd1-/+) 22...Nh4 23.Qd1 (23.Ke1 Qg2 24.Kd1 Qf1 25.Kc2-+) 23...Qg2 24.Ke1 Re8 25.Be3 Re3 (25...de3?! 26.Qe2 Qg5 27.Rb1-+) 26.Qe2 Qe2 0-1. ClayPigeons (2155) - Vithuson (2110), Rated Bullet game, lichess.org, 2020.

6.Qb3 Ne7 7.Nf3=+.

5.c4 d4

6.a4 Ne7 7.Nf3 0-0 8.Qb3 (8.ed4 ed4 9.Bd3 Bg4=) 8...Be6 (8...de3 9.de3 Bg4 10.Bd3=) 9.ed4= Bd4 (9...ed4 10.Bd3=) 10.Nd4 ed4 11.d3 (11.Qf3 Re8 12.Be2 Bc8=) 11...Nd7 (11...c5 12.Be2=+) 12.Nd2 (12.Bd4 Nf5 13.Be3 Ne3 14.fe3 f5+=) 12...Nc5=+ 13.Qc2 Nf5 (13...Bg4!?=+) 14.Be2 Qe7 15.0-0 Rfe8 16.Bf3 Rad8 (16...Rab8 17.Ba3 b6 18.Rfe1+/-) 17.Rfe1 (17.Ba3 Bc8+/-) 17...Qf7 18.Ba3 b6 19.Bc6 (better 19.Bc5 bc5 20.Nb3+/-) 19...Re7? (better 19...Bd7!? 20.Bd5 Be6 21.Bc5 bc5 22.Re6 Re6+/-) 20.Nb3 (20.Ne4 Bd7 21.Bd7 Red7 22.Nc5 bc5 23.Bc5 a5+-) 20...Nb3 21.Be7?? (21.Qb3 Nd6+-) 21...Ne7?? (better 21...Na1 22.Ra1 Ne7-+) 22.Qb3+/- Nc6 23.bc6 Bf5 24.Rad1 h6 25.Qb2 Kh7 26.Qe2 Qg6 27.Qf3?? (27.Qe7 Rc8+/-) 27...Rd6?? (27...Bg4 28.Qf4 Bd1 29.Rd1=+) 28.Qg3 (better 28.h3 Be6 29.Re4+-) 28...Qg3= 29.hg3 Rc6 30.Re7 a5 31.f3 Rc5 (31...h5!?=) 32.g4+/- Bg6 33.Kf2 f5 (33...Kg8!?+/-) 34.gf5+- Bf5 35.Rde1 (35.g4 Bd3 36.Rd3 Rc4+-) 35...Bg6? (35...Bd3 36.Rd1 Bc4 37.Rd4+=) 36.R1e5 (better 36.Ke2+/-) 36...Rc6? (36...Re5 37.Re5 Bd3 38.c5+=) 37.R7e6?? (37.Ke2 h5+-) 37...Rd6? (better 37...Re6 38.Re6 Bd3+/-) 38.Rd6+- cd6 39.Rd5 Bf7 (39...Bd3 40.Rd4 Bc2 41.Rd6+-) 40.Rd4 Be6 (40...d5+-) 41.Rd6 Bf5 42.Rb6 (42.Ke3 h5+-) 42...Bd7 (42...Bd3 43.c5 Bc2 44.Rd6 Ba4 45.c6 Bc6 46.Rc6+-) 43.c5 (43.Rb5 Kg6+-) 43...Ba4 44.c6 Bc6 (44...g5 45.Ra6+-) 45.Rc6 a4 46.Ra6 a3 (46...g5 47.Ra4 Kg6 48.Ra6 Kg7 49.g4+-) 47.Ra3 Kg6 48.Rc3 (better 48.d4 h5 49.d5 Kf5+-) 48...Kf6 49.Rc4 Ke6 50.Re4 Kd6 51.f4 Kd5 (51...Kd7 52.g4+-) 52.Ke3 1-0. ClayPigeons (2170) - Dmitrii7548 (2040), Rated Bullet game, lichess.org, 2019.

6.ed4 ed4 7.Nf3 Bg4 (7...d3 8.Qb3 Bf5 9.Nc3=+) 8.d3 (8.Qe2 Ne7 9.Qe4 Bf5 10.Qb7 Nbc6 11.bc6 Rb8 12.Bd4 Rb7 13.cb7 Bd4 14.Nd4 c5 15.Nf5 Nf5=) 8...Ne7 (8...Bb4 9.Nbd2 Qe7 10.Be2 Bf3 11.gf3=+) 9.Be2= Ng6 10.0-0 Nd7 (10...0-0 11.h3 Bf5 12.Nbd2=) 11.Nd4 (11.h3 Bf3 12.Bf3 Rb8+=) 11...Be2 (better 11...Nde5!? 12.Nf3 Bf3 13.Bf3 Qd3 14.Bb7 Rd8+-) 12.Qe2+- Nde5 13.Nf5 (13.Ne6!? Qe7 14.Nc5 Qc5 15.d4 Qc4 16.Qe3 Qb5 17.Na3+- (17.de5?! Qb2 18.ef6 Kf7+=)) 13...Qd7 Attacks the backward pawn on d3 (13...Qd3 14.Qd3 (14.Ng7? Kf7 15.Qd3 Nd3 16.Bf6 Kf6 17.Nh5 Kf7–+) 14...Nd3 15.Ba3 (15.Ng7? Kf7 16.Bf6 Kf6 17.Nh5 Kf7–+) 15...Ba3 16.Na3=) 14.d4 (14.Qe4 0-0-0 15.d4 Nc4 16.dc5 Nb2+=) 14...Qf5= 15.dc5 0-0-0 16.Nd2 (16.Be5 Qe5 17.Qe5 Ne5 18.Na3=) 16...Nh4?? (16...Rd2 17.Qd2 Nf3 18.gf3 Nh4–+) 17.Be5+- fe5 (better 17...Rhe8 18.f4 fe5+=) 18.g3?? (18.Ne4 Ng6+-) 18...Qg5 (18...Rd2 19.Qe3 Rd3–+) 19.Nf3?? (19.Ne4 Qg6+-) 19...Nf3?? (better 19...Qg4 20.Nd4 Rd4 (20...Qd4?! 21.Rad1 Qc5 22.Qg4 Kb8 23.Qh4=) 21.Qg4 Rg4–+) 20.Qf3+- Rhf8 21.Qe2 (21.Qe3 Qe3 22.fe3 a5+-) 21...h5 (21...Rd2 22.Qe4+=) 22.a4 (22.b6 cb6 23.cb6 a6+-) 22...h4 (22...Rd2 23.Qe1 Rfd8 24.a5+=) 23.a5 (23.Qe3 Qh5+-) 23...hg3 (23...Rd2!? 24.Qe4 Rf4+=) 24.fg3+- Rf1 25.Rf1 (worse 25.Kf1 Rd2 26.Qf3 e4 27.Qf8 Rd8=) 25...b6? (better 25...Qe7 26.Qf2 Kb8+-) 26.ab6 ab6 27.c6?? (better 27.cb6 Qe7 28.bc7 Qc7 29.Rf5+-) 27...Kb8 28.Qa2 (better 28.Re1 Re8 29.c5 bc5 30.b6+-) 28...Rd2?? (28...Qe3 29.Qf2 Qd3 30.Re1+=) 29.Rf8 (29.Qa3 e4 30.Rf8 Qd8 31.Qa6 Rd1 32.Kg2 Rd2 33.Kh3 Rh2 34.Kh2 Qf8 35.Qb7) 29...Rd8+- 30.Rd8 Qd8 31.Kg2 (31.Qf2 g5+-) 31...e4? (better 31...Qd3!?+=) 32.Qe2 Qe7 33.h4 g6 (33...Qe5!?+-) 34.Qg4+- e3 35.Kf1 (35.Qd4 e2 36.Qh8 Ka7 37.Qa1 Kb8=) 35...Qf6 (better 35...Qd6!?+-) 36.Qf4+- Do you see the mate threat? 36...Qc3 37.Qf8 Ka7 38.Qd8 (38.Qc8 Qd3 39.Kg2 Qe2 40.Kh3 Qf1 41.Kg4 Qc4 42.Kf3 Qd5 43.Ke3 Qe5 44.Kf2 Qd4 45.Kg2 Qe4 46.Kh3 Qh1 47.Kg4 Qd1 48.Kg5 Qd8 49.Qd8=) 38...Qc4= 39.Ke1 (better 39.Kg2!? Qe2 40.Kh3 Qf1 41.Kh2 Qf2 42.Kh3 Qf5 43.Kg2 Qe4 44.Kh2 Qc2 45.Kh3 Qf5 46.Kg2 Qe4 47.Kh3 Qe6 48.g4=) 39...Qb4–/+ 40.Ke2 The mate threat is Qxc7 40...Qb5 41.Ke3 Qc6 42.Qd4 (42.g4 Qc1 43.Kf3 Qf1 44.Kg3 Qf7=+) 42...Kb7 (42...Qc1 43.Qd2 Qa1 44.Qd3 Qe5 45.Kd2–/+) 43.g4 Kc8 (43...Qc1 44.Qd2 Qh1 45.Qc2 Qh4 46.Qg6 Qg3 47.Ke4–/+) 44.h5=+ gh5 45.gh5? (better 45.Qh8 Kb7 46.gh5 Qe6 47.Kd2 Qd5 48.Ke3 Qb3 49.Kf4 Qc4 50.Ke3=+) 45...Qh6–+ 46.Kd3 Qh5 47.Kc4 Qf7 48.Kb5?? (48.Kc3–+) 48...Qd7 49.Qd7 (49.Kc4 b5 50.Kc3 Qd4 51.Kd4–+) 49…Kd7 (49...Kd7 50.Kb4 Kc6–+) 0–1. retiponziani (1870) – Pip37 (1955), ChessWorld.net, 2015.

6.Be2 d3 7.Bf3 c6 8.Be4 f5 9.Bf3 e4?? (better 9...Qe7=+) 10.Nc3?? (better 10.Bg7 ef3 11.Nf3+- (11.Bh8?? fg2 12.Qh5 Kf8-+)) 10...ef3-+ 11.Qf3 (11.Nf3 Nf6-+) 11...Nf6 12.Na4 (12.bc6 bc6 13.Nh3 0-0-+) 12...Be7 13.Nh3 (13.Bd4 Qa5 14.Nc3 Be6-+) 13...cb5 (13...Qa5!? 14.bc6 Nc6 15.Qd1-+) 14.cb5 0-0 15.Nc3 Nbd7 16.Nd5 Nd5 (better 16...Ne4!? 17.Nhf4 Ndc5 18.Ne7 Qe7 19.Ba3-+) 17.Qd5 Kh8 18.Qd3 Nf6 19.Qd8 Rd8 20.Bd4 Be6 21.Nf4 Bf7 22.0-0 Rac8 23.a4 (23.Rfc1 a6-/+) 23...Bc5 (23...Ne4 24.Rfd1-+) 24.Bc3 (better 24.Bc5!? Rc5 25.d4-/+) 24...Ne4-+ 25.Rfc1 (25.Rfd1 Bb3 26.Rdb1 Bc4-+) 25...Nd2 26.Bd2 Rd2 27.Rc3 b6 28.g3 (28.h4 Rcd8-+) 28...g5 (28...Rcd8 29.h4-+) 29.Nh3 (29.Nd3-+) 29...h6 30.Kg2 (30.Kf1 Rcd8-+) 30...Rcd8 31.a5 (31.Kf1 Be6 32.Ng1 Rd1 33.Rd1 Rd1 34.Kg2 Bd5 35.f3 f4 36.Rc5 bc5 37.gf4 Rd2 38.Kf1 gf4-+) 31...Bb4 32.Rc7 R8d7 (better 32...Bd5 33.Kg1 Bf3 34.Rf1 ba5 35.Rcc1-+) 33.ab6 ab6 34.Raa7 (34.Rd7 Rd7 35.Ra4 Bc5-+) 34...Be6 (better 34...Bd5 35.Kf1 Rc7 36.Rc7 g4 37.Rc8 Kg7-+) 35.Rab7 (35.Rd7 Bd7 36.Rb7 Bc5 (36...Bb5?! 37.Rb6 Rd5 38.Rh6 Kg7 39.Rb6-+) 37.Rd7 Rd7-+) 35...Bc5 (better 35...Bd5 36.Kf1 Rd1 37.Ke2 Bb7 38.Rb7 Re1 39.Kf3 g4 40.Kg2 gh3 41.Kf3 Rb7-+) 36.Rd7 (36.Rc8 Kg7 37.Rd7 Bd7-+) 36...Rd7 (36...Bd7 37.Rb8 Kg7 38.Rb7-+) 37.Rd7 Bd7 0-1. Abdullaevich (2000) - jrockx (2040), lichess.org, 2019.

6.Be2 Ne7 7.ed4 Bd4 8.Bd4 Qd4 9.Nc3=.

6.Ne2 Ne7 7.Nc1 (7.Nd4 Bd4 8.ed4 ed4+=) 7...c6 (7...de3!? 8.fe3 Bd6+=) 8.Nb3= b6 (8...Qd6 9.Nc5 Qc5 10.Qh5 g6 11.Qh4 de3 12.Ba3 (worse is 12.Qf6 Rf8 13.Qe5 ef2 14.Kd1 Bg4 15.Kc2 Qe5 16.Be5 Nd7–/+; 12.de3?! Nd7=; 12.fe3?! Nd7=) 12...ed2 13.Kd1 Bg4 14.Qg4 Qf2 15.Bd3+/–) 9.Nc5 (9.Qh5 g6 10.Qf3 0-0+=) 9...bc5 10.a4 (10.Qh5 g6 11.Qf3 0-0+=) 10...0-0 11.Be2 (11.Bd3 f5=) 11...Be6 (11...a6 12.Qc2=) 12.d3 (12.Qc2 a6=) 12...a6 13.Nd2 (13.ba6 Na6 14.0-0 Nb4=) 13...Nf5 (13...ab5 14.ab5 Ra1 15.Qa1 cb5 16.cb5 de3 17.fe3+=) 14.e4 (14.Ne4 de3 15.0-0 ef2 16.Rf2 Ne3=) 14...Nd6 15.Nb3 White plans a5 (better is 15.ba6 Na6 16.0-0=) 15...Qb6?? (better is 15...ab5 16.Nc5 Bf7+=) 16.a5+/– Qa7 17.b6 Qe7 18.Nc5 Nc4 (18...Nd7 19.Ne6 Qe6 20.Ba3+-) 19.Ne6 (19.dc4?! Qc5 20.0-0 Qe7+= (20...Bc4?? 21.Qc2+-)) 19...Nb2? (19...Qb4 20.Kf1 Nd2 (20...Nb2?? 21.Qb1+-) 21.Kg1 Qb2+-) 20.Qb3 Qf7 21.Qb2 (better is 21.Qa2!? Na4 22.Nf8 Nc3 23.Qf7 Kf7+-) 21...Qe6 22.b7 Ra7 23.Qb6 1–0. Hernandez Ayala,J (1760) – Perez Cadenas,Cesar (2005), Pasao op, 1997.

6.Ne2 Bg4 7.h3 de3 8.fe3=.

6.Nf3 de3 7.fe3 Bf5 8.Be2 (8.d4 Bb4 9.Bc3 Qe7 10.Bb4 Qb4 11.Qd2 Qd2 12.Nbd2 Nd7+=) 8...Bd3 9.0-0 Ne7 10.Nc3 (10.Ne1 Be2 11.Qe2 0-0+=) 10...0-0 (10...a6 11.Ne1 Bg6 12.Bf3 ab5 13.cb5=) 11.Na4+= Bb4 (better 11...Be2 12.Qe2 Bb6+=) 12.Re1 (better 12.a3!? Be2 13.Qe2+/-) 12...Be2=+ 13.Re2 Qd3 14.Bc3 (better 14.a3 Ba5 15.Rc1=) 14...Qc4?? (14...Bc3 15.Nc3 Qc4 16.Rc1-/+) 15.Bb4?? (better 15.d3 Qb5 16.Qb3 Nd5 17.Bb4+/-) 15...Qb4-/+ 16.Rb1 Qd6 17.Qb3 Kh8 18.d4 Nd7 19.Rd2 (19.Nc3 Rae8=+) 19...e4-/+ 20.Ne1 f5 21.Rc1 Nf6 (21...f4 22.Nb2-/+) 22.Rb2 (22.Nc5!? Ng4 23.g3-/+) 22...Ned5-+ 23.Rbc2? (23.h3 Qg3-+) 23...Rac8 (23...Ng4 24.g3 Nge3 25.Re2-+) 24.Nc5? (24.h3 Qg3-+) 24...b6 (24...Ng4 25.g3 Nde3 26.Rd2-+) 25.Na6 (25.Nb7 Qd7 26.Rc6-+) 25...Ne3?? (better 25...Ng4 26.g3 Nde3-+ (26...Nge3?! 27.Rc6 Qd7 28.Nc7 Rc7 29.Rc7 Nc7 30.Qe3-+)) 26.Qe3+/- f4 (26...Ng4 27.Qg3 Qd4 28.Kh1+=) 27.Qc3 e3 (27...Rfd8 28.a3+/- (worse 28.Nc7 Rd7-/+)) 28.Rd1 (28.Nf3!? Nd5 29.Qd3 Qd8+-) 28...Ne4 29.Qd3 (29.Qc4 Nd2 30.Qe2 c5 31.dc5 bc5+/-) 29...Nd2? (29...Nf2 30.Rf2 ef2 31.Kf2+=) 30.Nf3 (better 30.Rc6!? Qd7 31.Rdc1+/-) 30...Nf3+= 31.gf3 Qg6? (31...Qd5!? 32.Qe2 c6+/-) 32.Kh1 (better 32.Qg6 hg6 33.Rc7+-) 32...Qh5 33.Rg2?? (better 33.Qe2+/-) 33...Qf3=+ 34.Rdg1 (34.d5 Qh3=) 34...g6 (34...c6!? 35.bc6 Rc6-/+) 35.d5= Rf6 (better 35...Rf5!? 36.Qc3 Kg8 37.Nc7 Rh5=) 36.Qd4+/- Rcf8 (better 36...Kg7!? 37.Qe5 Qh3 38.Nc7 Qf5 39.Ne6 Kg8+-) 37.Nc7+- Kg8 38.Ne6 Re6 39.de6 Re8 (39...Qb7 40.Qe5 Qf3+-) 40.e7! e2?? (40...Re7 41.Qc4 Pinning) 41.Qc4 Kg7 42.Qe2 Kh6 (42...Qe2 43.Re2 Kf6+-) 43.Qf3 Re7 (43...Kg7 44.Qc6 Kf7 45.Rg6 hg6 46.Qg6 Ke7 47.Re1 Kd8 48.Re8 Kd7 49.Qc6) 44.Qh3 (44.Rg6 hg6 45.Qg4 Re6 46.Qe6 Kg7 47.Rg6 Kh7 48.Qg8) 44...Kg7 45.Qg4 (45.Qf5 h6 46.Rg6 Kh8 47.Rg8) 45...Kg8 46.Qg6! Rg7 (46...hg6 47.Rg4 Double attack (47.Rg4 Decoy)). ClayPigeons (2050) - Ragnas (2095), Rated Bullet game, lichess.org, 2020.

6.Nf3 de3 7.fe3 Bg4 8.Be2 c6 9.0-0+= Nd7 (9...cb5 10.d4 Be7 11.cb5 ed4 12.Nd4 Be2 13.Qe2+- (13.Ne2?! Qd1 14.Rd1 a6+=)) 10.a4 (10.d4 ed4 11.ed4 Bd6+-) 10...Qa5 (10...Ne7 11.d4 ed4 12.Nd4 Be2 13.Qe2 Bd4 14.ed4+=) 11.bc6 bc6 12.h3 Bf5 (12...Be6 13.d4 Rb8 14.Qc2+=) 13.Nh4 (13.Ne5 Ne5 14.Rf5 g6+-) 13...Bb1 (13...Be6 14.Bg4 Bg4 15.Qg4+=) 14.Rb1+- Rb8 15.Bh5 (15.d4 ed4 16.ed4 Bb4+-) 15...Kf8 (15...g6!? 16.Bf3 Qa6+=) 16.d4 Bd6?? (better 16...ed4 17.ed4 Bb4+-) 17.c5 (better 17.de5 Qc5 18.Qd6 Qd6 19.ed6+-) 17...Be7 18.de5 (better 18.Qg4 Qd8 19.Nf5+-) 18...Bc5?? (18...Qc7+-) 19.ef6 Ndf6 20.Kh1 (20.Bf6 Be3 21.Kh1 g6 22.Rb8 Qd8 23.Qd8 Kf7 24.Qe8) 20...Ne7?? (better 20...Rd8 21.Qb3 Rd5+-) 21.Bf6 gf6 (21...Qd8 22.Rb8 Qb8 23.Ba1 Nf5 24.Rf5 Kg8 25.Bf7 Kf8 26.Be6 Ke8 27.Qd7) 22.Rf6 (22.Rb8 Kg7 23.Qg4 Ng6 24.Nf5 Kf7 25.Qc4) 22...Kg7 (22...Kg8 23.Qg4 Ng6 24.Qe6 Kg7 25.Nf5) 23.Rf7 (23.Qg4 Ng6 24.Rg6 Kf8 25.Rf6 Ke7 26.Qg7 Kd8 27.Rb8) 23...Kh6+- 24.Rb8 Rb8 25.Rf6 (25.Qf1 Bd4 26.Qf4 Qg5 27.Qd6 Ng6 28.Rh7 Kh7 29.Bg6 Qg6 30.Qg6 (30.Qd4?! Qb1 31.Kh2 Rb7+=) 30...Kh8 31.ed4+-) 25...Kg7+- 26.Qf3?? (better 26.Qa1 Rb1 27.Qb1 Kf6 28.Qf1 Ke6 29.Bg4 Ke5 30.Qf4 Kd5 31.Nf3+-) 26...Qe1–+ 27.Kh2 (27.Qf1 Qh4 28.Rf7 Kh6–+) 27...Qh4 28.Rf7 Kh6 (better 28...Kg8!? 29.Rf6–+) 29.Rf6 Kg7 (better 29...Ng6 30.Bg6 hg6–+) 30.Bg4?? (30.Rf7 Kg8 31.Rf6–+) 30...Qe1 (better 30...Qf6 31.Qd1 Qe5 32.Kg1 Nd5–+) 31.Rf7+- (31.Rf7 Kg8 32.Qf6 Bd6 33.Qd6 Kf7 34.Be6 Kf8 35.Qb8 Kg7 36.Qe5 Kg6 37.Qf4+-) 1–0. GuestDZWJ – GuestZVBW, freechess.org, 2020.

6.Nf3 de3 7.fe3 Bg4 8.Be2 Ne7 9.h3 Bh5 10.0-0 h6 (10...Bb4 11.a3 Bd6 12.Nc3+=) 11.Nh4 (better is 11.d4 ed4 12.ed4+/–) 11...Bg6?? (better is 11...Be2 12.Qe2 0-0=) 12.Ng6+- Ng6 13.Bh5 Ke7 (13...0-0 14.Bg6 Qe7 15.Be4+-) 14.Bg6 Nd7 (14...Bd6 15.d4 c5 16.Be4+-) 15.Nc3 (15.d4!? Bd6 16.c5 Nc5 17.dc5 Bc5+-) 15...c6 16.Qf3 (16.Be4 Nb8+-) 16...Rc8 (16...Nf8 17.d4 Ng6 18.dc5+-) 17.a4 Nf8 (17...Qc7 18.Bf5+-) 18.Bf5 Rc7 19.bc6 bc6 20.Ne4 Bb4 21.c5 Ne6 (21...Qd5 22.d4 ed4 23.Qg3+-) 22.Be6 Ke6 23.Qg4 Kf7 24.Nd6 Kf8 25.d4 (25.Qb4!? Kg8+-) 25...Kg8 (25...ed4 26.Bd4 Rd7 27.Qg6+-) 26.Qe6 (better is 26.de5 Bc5 27.Qc4 Kh7 28.Qc5 fe5 29.Be5 Rf8+-) 26...Kh7 27.Qf5 Kg8 28.de5 Bc5 29.Qe6 (better is 29.Rad1!? Be3 30.Kh1 Qb8+-) 29...Kh7 30.Nf5 (30.Bd4!? Bd4 31.ed4 fe5 32.de5 Qg5+-) 30...Re8 31.Qc4 Bb6 (31...Qd5 32.Rac1 Rb8 33.Ba1 Qc4 34.Rc4+-) 32.Qe4 (better is 32.a5 fe5 33.ab6 ab6+-) 32...Qd5 33.Qg4 (better is 33.Qc2!? Qc5 34.Qc5 Bc5 35.ef6 gf6+-) 33...fe5 34.Kh1 Re6 35.e4 Qd2 36.Bc1 Qg5 (36...Qc3 37.Rb1 Rg6+-) 37.Bg5 (37.Bg5 Rg6 38.h4+-) 1–0. GuestVBSS – GuestCXPS, freechess.org, 2017.

6.Nf3 Ne7 7.a4 Bg4 8.Bd3= 0-0 9.Qc2 (better 9.ed4 ed4 10.0-0=) 9...f5?? (better 9...Bf3 10.gf3 f5=+) 10.Ne5+/- de3 (10...Bh5 11.0-0+/-) 11.de3 (better 11.Ng4 Bd4 12.Ra2 ed2 13.Nd2 fg4 14.Bh7 Kh8 15.0-0+-) 11...Nd7? (better 11...Bh5+/-) 12.Ng4+- fg4 (12...Bb4 13.Nd2 Bd2 14.Qd2 fg4 15.Rd1+-) 13.Bh7 Kh8 14.Bd3 Nf6 15.0-0 Qe8 16.Nd2 Qh5 17.Ne4 Ne4 18.Be4 Nf5 (18...Bd6 19.g3 c6 20.Rad1+-) 19.Qc3 (19.Bb7 Rab8 20.Bc6 g3 21.hg3 Ne3+-) 19...Bd6 (19...Rf6 20.Rfd1 (20.Bb7?! Rb8+-) 20...g3 A) 21.fg3?? Ne3 22.Rd4 A1) worse 22...Bd4 23.Qd4 Qg5 24.Ba3+= (24.Bb7?! Raf8 25.Bf3 Nc2=); A2) 22...Nd1-+; B) 21.hg3 Ne3 22.fe3+-) 20.Bf5?? (better 20.h3 Qh6 21.c5+-) 20…Qh2 0-1. ClayPigeons (2110) - f_aceved (2215), Rated Bullet game, lichess.org, 2020.

6.Nf3 Bg4 7.Qb3 Bf3 8.gf3 Ne7 9.a4 b6 (9...f5 10.f4 e4 11.d3 de3 12.fe3 Be3 13.de4=) 10.Bd3 Nd7 (10...f5 11.a5=+) 11.Qc2 g6 12.h4 f5 13.Ke2 (13.h5!? Rf8 14.hg6 hg6 15.Be2=) 13...Nf6-/+ 14.Qb3 (14.Rg1 c6-/+) 14...e4 15.ed4? (better 15.Bc2!? d3 16.Bd3 ed3 17.Qd3 Qd3 18.Kd3-/+) 15...ed3-+ 16.Qd3 Bd6 17.d5 0-0 18.Qd4 (18.a5 ba5 19.Ra5 c6 20.dc6 Qa5 21.Qd6 Rae8 22.Qe6 Kg7-+) 18...c5 (better 18...f4!?-+) 19.bc6 Bc5 (19...Qc7 20.Kd1-+) 20.Qe5-/+ Nc6 (better 20...Kg7 21.Qe6 Bd6-/+) 21.Qe6= (21.dc6?? Re8 22.Kf1 Re5 23.Be5 Rc8-+) 21...Kg7 22.Qc6 (22.dc6?? Re8 23.Qe8 Qe8 24.Kf1 Qc6-+) 22...Re8 (22...Rc8 23.Qb5=) 23.Kd1 Rc8 24.Bf6 Qf6 25.Qf6 Kf6 26.d3 Bf2 27.h5 Bd4 28.Nd2?? (better 28.Ra3+=) 28...Ba1-+ 29.Kc2 Bd4 30.Nb3 (30.Rh4 Bf2 31.Rh2 Bg3-+) 30...Bc5 (30...Re2 31.Kd1 Rb2 32.Nd2-+) 31.d4 (31.hg6 Kg6 32.Nc5 bc5 33.Rg1 Kf6-+) 31...Bb4 32.Kd3 a6 (32...f4!? 33.c5 bc5 34.Kc4-+) 33.hg6 hg6 34.Rh7 (34.Na1-+) 34…b5! (34...b5 35.c5 f4-+) 0-1. ClayPigeons (2100) - Docben (2085), Rated Bullet game, lichess.org, 2020.

6.Nf3 Bg4 7.h3 Bh5 8.Be2 d3 9.Bf1 e4 10.g4 Bf7 (10...ef3? 11.gh5 c6 12.Qf3+-) 11.Nh4 Bc4 (11...Nd7 12.Nc3 Ne5 13.Ne4 Nc4 14.Bc3+/-) 12.Qa4 Qd5 (12...Bf7 13.Qe4 Ne7 14.Nc3+/- (14.Bd3?? Bd5-+)) 13.Nc3+- c6?? (better 13...Qf7 14.Ne4 Nd7+/-) 14.Nd5 (14.Nd5 Bd5 15.bc6 bc6 16.f3 ef3 17.Bd3+-) 1-0. pcmvr - bolu (2210), net-chess.com, 2021.

6.ed4 Bd4

7.Nc3 e4 8.Qb3 (8.Qh5 g6 9.Qe2 Kf7+=) 8...f5 (8...Nd7!?+=) 9.Nge2 Bc5? (9...Bf6 10.Nd5=) 10.Na4 (better is 10.Ne4!? Bf8 11.N4g3+/–) 10...Bf8+= 11.Nf4 (11.Rd1 Nf6+=) 11...Nf6 (11...Qd6 12.Qg3 Nf6 13.c5+=) 12.d3 (12.c5!?=) 12...Bd6+= 13.Nh5?? (better is 13.Ne2 ed3 14.Qd3 Bb4 15.Nec3=) 13...Nh5–+ 14.de4 (14.c5 Bf4–+) 14...Nf6 (better is 14...Qe7!? 15.Qf3 Qe4 16.Qe4 fe4 17.c5–+) 15.e5 Qe7 16.0-0-0? (better is 16.f4 Bb4 17.Bc3 Bc3 18.Nc3–+) 16...Be5 17.Be5 Qe5 18.c5 (18.Qc3 Qe7–+) 18...Be6 19.Bc4 (19.Qc2 0-0–+) 19...Bc4 (better is 19...Qf4 20.Kb1 Bc4–+) 20.Qc4 Qa1?? (better is 20...a6 21.ba6 Na6–/+ (21...ba6 22.Rhe1 Ne4 23.Nc3 Qf4 24.Re3+-)) 21.Kc2+- Qe5 22.Rhe1 Ne4 23.f3 Nd7 c5 draws heavy fire 24.c6 Ndc5?? (24...Ndf6 25.fe4 fe4 (25...Ne4?? 26.cb7 Rb8 27.Nc5+-) 26.cb7 Rb8+-) 25.cb7 (better is 25.Nc5 Rd8 26.cb7+-) 25...Nb7 26.fe4 Na5 27.Qd5 (better is 27.Qb4!? c5 28.Qa5 0-0+-) 27...Qd5 28.ed5 (28.ef5 Kf7 29.Rd5 Rhd8+-) 28...Kd7 29.Nc5 Kd6 30.Ne6 g6 31.Kc3 Rhe8 32.Kb4 Nb7 33.Rc1 c5?? (better is 33...Nd8+/–) 34.bc6 (better is 34.dc6 a5 35.Ka3 Re6 36.cb7+-) 34...a5 (34...Nd8 35.c7 Ne6 36.de6+- (worse is 36.Re6 Kd7+-)) 35.Ka4 Nc5 (35...Nd8 36.c7 Nf7 37.Red1+-) 36.Nc5 (36.Rc5!? Re6 37.de6 Kc5 38.Rc1 Kd6+-) 36...Re1 37.Nb7 Kd5 38.Re1 Kc6 39.Na5 Kc5 40.Rc1 Kd4 (40...Kd5 41.Rc7+-) 41.Kb4 (41.Rc7 h5+-) 41...Rb8 42.Ka4 Ra8 43.Rc4 (43.Rc7 h5+-) 43...Kd3 44.Rb4 (44.Rc7 h5+-) 44...Kc3 (44...Rc8 45.Nc4+-) 45.Rb7 h5 46.Rc7 Kb2 47.a3 g5 (47...h4 48.Rc6+-) 48.Rc5 Ka2 (48...Rf8 49.Nc4 Ka2 50.Nd6+-) 49.Rf5 Kb2 (49...Rg8 50.Kb4+-) 50.Rg5 Ka2 (50...Rh8 51.h4+-) 51.Rh5 Kb2 (51...Rg8 52.Nc4 Rg2 53.Kb4+-) 52.Rf5 (52.g4 Re8 53.Rb5 Kc3+-) 52...Ka2 (52...Rg8 53.g3+-) 53.Rf2 Kb1 54.g4 Kc1 55.g5 Rg8 56.h4 Rh8 57.Rh2 Kd1 (57...Rg8 58.Kb5+-) 58.h5 Kc1 59.g6 Re8 60.h6 Re4 61.Kb5 Re5 62.Kb6 Re6 63.Nc6 Rg6 64.h7 Rg3 (64...Rd6 65.h8Q Rd2 66.Qc3 Kb1 67.Qd2 Ka1 68.Rh1) 65.h8Q Rb3 (65...Ra3 66.Qb2 Kd1 67.Qd2) 66.Kc7 (66.Nb4 Rb4 67.ab4 Kd1 68.Qa1) 66...Ra3 (66...Kb1 67.Qh7 Ka1 68.Qg7 Rc3 69.Qc3 Kb1 70.Qb2) 67.Qb2 1–0. GuestLTQB – Janur, freechess.org, 2017.

7.Nc3 Ne7 8.Be2 0-0 9.Nf3 Ng6 10.Nd4 ed4 (10...Qd4 11.Nd5 Qb2 12.Nc7=) 11.Nd5 c6 12.bc6 bc6 13.Bd4 (better 13.Nb4!? Nf4 14.Kf1-/+) 13...cd5-+ 14.0-0 Kh8 (14...Be6 15.Qa4-+) 15.Bc5 (better 15.Bf3 Bb7 16.Re1-/+) 15...Nd7?? (better 15...Re8-+) 16.Bf8= Ndf8 17.cd5 (17.d4 dc4 18.Bc4 Be6=+) 17...Qd5?? (better 17...Bb7=+) 18.Bf3+- (18.Bf3 Qd8 19.Ba8+-) 1-0. brucepeng (2030) - CmonManEasy (2025), lichess.org, 2021.

7.Nc3 Ne7 8.Qh5 g6 9.Qe2=.

7.Nc3 Bf5 8.Nf3 (8.Qf3 Qc8=) 8...Ne7 9.Nd4 Qd4 (9...ed4 10.Na4 Qd6 11.Qf3=) 10.Na4 (10.Qf3 c6=) 10...Qe4 11.Qe2 (11.Be2 Nd7= (11...Qg2? 12.Bf3 Qg5 13.Bb7+-)) 11...Qc2+= 12.Qd1 b6 (12...Qd1!? 13.Kd1 Nd7+=) 13.Qc2 Bc2 14.Nc3 Nf5?? (14...a6 15.d3 ab5 16.Nb5=) 15.Nd5?? (15.Rc1 Nd4 16.Nd5 Be4 17.Nc7 Kd7 18.Na8 Ba8+-) 15...0-0?? (better is 15...Kd8=) 16.Nc7+- Nd7 17.Na8 Ra8 18.Be2 (18.Rc1 Be4+-) 18...Be4 (18...Nc5 19.Rc1 Nd3 20.Bd3 Bd3 21.Rc3+-) 19.0-0 (19.f3 Bb7+-) 19...Nh4 (19...Nc5 20.Rfe1+-) 20.f3 Bb7 (20...Bg6 21.f4+-) 21.Bd3 (21.d4!? ed4 22.Bd4 Nf5+-) 21...Nc5 22.Bc2 Rd8 23.Rad1 (23.Bc3 Bc8+-) 23...Nd3 24.Bc3 (24.Bd3 Rd3 25.Kf2 Nf5+-) 24...Ng6 (24...Nf4 25.Kf2 Nfg2 26.Kg3+/–) 25.Bd3 Rd3 26.Rde1 Nf4 (26...a6 27.Re3 Nf4 28.Kf2+-) 27.Kf2 1–0. GuestTJTY – GuestLDHG, freechess.org, 2016.

7.d3?? Bb2–+ 8.Nd2 White launches an attack 8...Ba1 9.Qa1 Qd4 (9...a6 10.Ngf3–+) 10.Qc1 (10.Qd4 ed4 11.Ne2 a6 12.Nd4 ab5 13.Nb5 Kd8–+) 10...c5 (10...a6 11.Ngf3 Qd8 12.Qa3–+) 11.Ngf3 b6 (better 11...Qd8–+) 12.Nd4+- cd4 13.Be2 Bb7 14.0-0 Nd7 15.Nb3 (better 15.Qd1+-) 15...0-0-0? (better 15...a6!?+-) 16.a4 (16.c5!? Nc5 17.Nc5 bc5 18.Qc5 Kb8+-) 16...Kb8 (16...Ne7 17.c5 bc5 18.Nc5+-) 17.a5 Rc8 (17...Nh6 18.ab6 ab6 19.c5 bc5 20.Nc5 Nc5 21.Qc5+-) 18.a6 (18.Bg4!? Rc7+-) 18...Ba8 19.Qd1 Ne7 20.Bf3 (20.Bg4 Rc7+-) 20...Bf3 21.Qf3 Threatening mate... how? (21.gf3?! g5=) 21...Kc7? (better 21...Rc7+-) 22.Qb7 Kd8 (22...Kd6 23.Nd2 (23.Qa7 Rc7 24.Qc7 Kc7–/+) 23...f5 24.f4+-) 23.Qa7 Rc7 24.Qa8 Nc8 25.c5 (better 25.f4!? Ra7 26.Qd5 Ne7+-) 25...bc5 26.Rc1 c4 (26...Ndb6 27.Qf3 Na4+-) 27.Rc4 Ndb6 28.Qe4 (better 28.Qb8 Rc4 29.dc4 Nc4+-) 28...Nc4 (28...Nd6 29.Rc7 Ne4 30.Rb7+- (30.Rg7?! Nd6=)) 29.dc4 Ke7 (29...Nd6 30.Qa8 Rc8+-) 30.c5 Rd8 31.b6 Nb6 32.cb6 Rc3 Black intends d3 33.g4 (33.Qb1 Rd6 34.a7 Rb6 35.a8Q Rcb3 36.Qa7 Kf8 37.Qb6 Rb1 38.Qb1+-) 33...d3?? (33...Rb3 34.Qc2 Rc3=) 34.Nd2 (34.Qb4 Ke6 35.Qc3 d2 36.Nd2 h5+-) 34...Rd4 (34...Rc1 35.Kg2 Ra1+-) 35.Qe3 (better 35.Qd4! ed4 36.b7 Rc1 37.Kg2 Ra1+-) 35...Kd6 (35...Rg4 36.Qg3! Rg3 37.hg3+-) 36.h4 (better 36.Qd4! ed4 37.a7 Ra3+-) 36...Ra3 (36...Rg4 37.Kh2 Rh4 38.Kg2 Rg4 39.Kh3+-) 37.Kh2 (better 37.a7 Kc6 38.Qf3 Kb6+-) 37...Ra6 38.b7 (better 38.Nb3 d2 39.Nd2+-) 38...Rb6?? (better 38...Kc7+-) 39.Ne4 (better 39.Nc4! Kc7 40.Nb6 Kb7 41.Na4 Ra4 42.Qd3+-) 39...Kd5 40.Nc3 Kc4? (better 40...Kd6 41.g5 Ke6 42.gf6 gf6+-) 41.Na4?? (better 41.Qc1 Rb7 42.Ne2 Kd5 43.Qh1 e4 44.Nd4 Kd4 45.Qa1 Kc5 46.Qa5 Rb5 47.Qc3 Kd6 48.f3+-) 41...Rb7=+ 42.Nb2?? (better 42.Qd2=+) 42...Rb2–+ 43.Qf3 d2 44.Qc6 (44.Qc6 Kd3 45.Qf3 Kc2 46.Qe2–+; 44.Qd1–+). BeepBeepImAJeep (2580) – BB09 (2040), lichess.org, 2018.

7.Bd4 Qd4=.

5.c4 Ne7

6.Qb3 Be6 7.Nf3 (7.d4 ed4 8.ed4 Bb6=) 7...Nd7 (7...e4 8.Nd4 Bd4 9.Bd4=) 8.a4 (8.d4 ed4 9.Bd4 a6=) 8...0-0 (8...e4 9.Nd4 dc4 10.Qc2+=) 9.d4= Nb6?? (better is 9...ed4 10.Bd4 c6=) 10.dc5+- dc4? (better is 10...Nc4 11.Bc4 dc4+-) 11.Qc2 Nbd5 12.Bc4 a5 (12...Kh8 13.Qb3 Qd7 14.0-0+-) 13.Nc3 (13.e4 c6+-) 13...Kh8 (13...Qe8 14.Nd5 Nd5 15.Ba3+-) 14.Nd5 Nd5 15.Ba3 (better is 15.0-0-0 c6 16.e4 Rc8 17.ed5 cd5+-) 15...b6 (15...c6+-) 16.Rd1 Rf7 17.e4 (17.c6!? Qe8 18.Bd5 Bd5 19.Rd5 Kg8+-) 17...Rd7 18.ed5 Bd5 19.Bd5 Ra7 (19...Rd5 20.0-0+-) 20.0-0 (better is 20.Qe4 bc5 21.Bc5 Rb7+-) 20...c6 (20...Rd5 21.Rd5 Qd5+-) 21.Bc6 Rd1 22.Rd1 Qc7 23.Rd7 (23.Qf5 h6 24.Be4 g5 25.cb6 Qd6 26.Rd6 Rd7 27.Rd7 Kg8 28.Qh7) 23...Qb8 24.Ra7 Qa7 25.Qf5 Qc7 26.cb6 (26.Ng5 g6 27.Qf6 Qg7 28.Nf7 Kg8 29.Nh6 Kh8 30.Qd8 Qf8 31.Qf8) 26...Qd8+- 27.Qd7 Qb8 28.Bd6 (28.b7 h6 29.Qc8 Qc8 30.bc8Q Kh7 31.Be4 g6 32.Qd7 Kg8 33.Bg6 f5 34.Qh7) 28...Qg8 29.b7 1–0. Dumontelle,Joe – Haas, Feb, 1978.

6.Nc3 0-0 7.cd5 Nd5 (7...a6!?+=) 8.Qb3 Be6 9.Bc4 c6 10.a4?? (better is 10.bc6 bc6 11.e4+-) 10...Re8 (10...Qd7 11.bc6 bc6 12.e4=) 11.Nf3 h6 (11...Qd7 12.Rd1 a6 13.d4 ed4 14.bc6 Nc6 15.Nd5+/–) 12.0-0+= a6 13.bc6 bc6 14.a5 Bf7?? (14...Kh8 15.d4 ed4 16.Ne4+=) 15.Ne4?? (better is 15.e4+-) 15...f5?? (better is 15...Nd7+=) 16.Nc5+- e4 17.Ne5 Qd6 (17...Re7 18.Nf7 Kf7 19.Ba3+-) 18.Nf7 Kf7 19.Qb7 Nd7 20.Nd7 Ke6 21.Be5 Qd7 22.Qd7 Kd7 23.Bd5 cd5 24.Bg7 h5 25.Rfc1 Ke6 26.Rc6 Kf7 27.Bd4 h4 28.Rc7 Ke6 29.Rac1 Red8 30.Rh7 Rab8 31.Rc6 Rd6 32.Rh6 Ke7 33.Rc7 Rd7 34.Rh7 Ke6 35.Rh6 Ke7 36.Bf6 Ke8 37.Rh8 Kf7 38.Rd7 Ke6 39.Rb8 Kd7 40.Rb6 Kc7 41.Be5 Kc8 42.Ra6 Kb7 43.Rb6 Ka7 44.Bd4 Ka8 45.a6 Ka7 46.Rd6 Ka8 47.Rd8 1–0. gtate (1930) – dbeckett (1610), net–chess.com, 2004.

6.Nc3 c6 7.d4 Bb4 (7...ed4 8.ed4 Bb4 9.a3 Bc3 10.Bc3=) 8.de5 fe5 9.Qb3 (9.a3 Ba5=) 9...Bd6 (9...Qa5!? 10.a3 Bd6 11.bc6 bc6 12.cd5 cd5 13.Qb5 Nbc6=) 10.bc6+= bc6 11.cd5 cd5 12.Rd1 (12.Nd5? Nd5 13.Bb5 Ke7–+) 12...Nbc6 13.Bb5 Rb8 14.Bc6 Nc6 15.Qd5 Nb4 16.Qd6 Nc2 17.Kf1 Qd6 18.Rd6 Rb2 19.Nf3 0-0 20.Kg1 Bb7 21.Rd7 (21.e4 Na3 22.h3 Nb1 23.Nb1 Rb1 24.Kh2 Rh1 25.Kh1 Be4 26.Ne5 Rf2=) 21...Bf3+= 22.gf3 Rf3 23.Ra7?? (better is 23.Kg2 Rf7 24.Rf7 Kf7 25.Kf3=) 23...Ne3!–+ 24.fe3 (24.fe3 Re3 Combination) 24...Re3 25.Ra8 Kf7 26.Ra7 Kg6 27.Ne2 (27.Ra6 Kf5 28.Ne2 Ree2 29.Kf1 Rec2 30.Rf6 gf6 31.Rg1 Rc1) 27...Ree2 28.Kf1 Rec2 29.Rg1 Kh5 0–1. Bonetti,Shane – KilledByDeath (2190), ICC, 2002.

6.Nc3 Be6 7.d4 ed4 8.ed4+=.

6.d4 ed4 7.Bd4 Bb4 8.Bc3 Qd6=.

6.d4 ed4 7.Bd4 Bd4 8.Qd4 Be6=.

6.cd5 Nd5 7.Qb3 Be6 8.Bc4 0-0 9.Nc3 c6 10.bc6 bc6 11.Qb7 (better 11.e4!?+-) 11...Qd7 (11...Rf7 12.Qa8 Nc7 13.Be6 Na8 14.Ne4+=) 12.Qa8+/- Na6 13.Qf8 Kf8 14.Nd5?? (better 14.Ba6 Nb4 15.Be2 Nc2 16.Kd1 Na1 17.Ba1+=) 14...Bd5-/+ 15.Bd5 Qd5 (worse 15...cd5 16.Ne2=+) 16.Nf3 e4 17.Ng1? (better 17.Nd4-/+) 17...Nb4-+ 18.Bc3 (18.d4 Nc2 19.Kf1 Na1 20.Ba1-+) 18...Nd3 (better 18...Nc2 19.Kd1 Na1 20.Ba1 Qd3-+) 19.Ke2 Qc4 20.Nh3 (20.f3 Bb4 21.Bb4 Nb4 (21...Qb4?! 22.fe4 Qe4 23.Nf3=) 22.Kf2 Nd3 23.Ke2 Nc1 24.Kf2 Qc2 25.Rc1 Qc1 26.fe4 Qd2 27.Ne2 Qa2-+) 20...Bb4 (20...Nf4 21.Kd1 Qe2 22.Kc1 Ng2 23.Rb1-+) 21.Bb4 Qb4 (21...Nb4 22.Kd1-+) 22.Rhc1? (22.f3 Ne5 23.fe4 Qe4-/+) 22...Qd6 (better 22...Nc1!? 23.Rc1 Qb5 24.Ke1-+) 23.Rc3 (23.Rh1 Nb4-/+) 23...Qh2 24.Nf4 (24.Rg1 g5 25.Rc6 g4-/+) 24...Nf4-+ 25.ef4 Qg2 26.Re3? (better 26.Rac1-+) 26...Qg4 27.f3 (27.Kf1 Qh5 28.Rae1 a6-+) 27...ef3 (better 27...Qg2 28.Kd1 ef3-+) 28.Rf3 h5 (better 28...Qe6 29.Re3 Qc4 30.Kf3 Qd4-+) 29.Raf1? (29.Rc1 Qg2 30.Ke3 g5 31.fg5 Qg5 32.Rf4 c5-+) 29...h4 (29...Qe6 30.Re3 Qc4 31.Ke1 Qa2 32.f5-+) 30.R1f2 (30.a3 c5-+) 30...g6 (30...Qe6 31.Kf1 Qa2 32.Rh3 Qb1 33.Ke2 Qb5 34.Ke1-+) 31.Ke3? (31.d4 Ke7-+) 31...Qf5 (31...Qe6!? 32.Kd4 Qa2 33.Rc3-+) 32.Ke2 (32.d4 c5 33.dc5 Qc5 34.Ke2 Qc4 35.Ke1 Kg7-+) 32...Qc5 (32...Qe6!? 33.Kf1 Qa2 34.Rh3 Qc4 35.d3-+) 33.Kd1 (33.Rh3 Qc4 34.Kd1 Qa2 35.Rh4 Qb1 36.Ke2 Qe4 37.Kf1 g5 38.Rh8 Kg7-+) 33...f5 (33...Qh5 34.Ke2-+) 34.Re3 Kf7 (better 34...Qd4-+) 35.Rd3?? (35.Rh2 Qc4 36.Rh4 Qa2-+) 35...Qb5 (better 35...Qf2 36.Kc2 Qf4 37.Rd7 Ke6-+) 36.Re2?? (better 36.Rh3-+) 36…Qb1 0-1. ClayPigeons (2145) - stration (2185), Rated Bullet game, lichess.org, 2019.

6.cd5 Nd5 7.Bc4 Be6 8.Qb3 0-0?? (better 8...Qd7=) 9.e4+- Bf2?? (better 9...c6 10.bc6 bc6+-) 10.Kf2 c6 11.bc6 (11.Nc3!? Nd7 12.Ba3 N7b6 13.Bf8 Nc4 14.ed5 cd5+-) 11...bc6 12.ed5 (12.Nc3 Na6 13.ed5 Nc5+-) 12...cd5 13.Be2 Nc6 14.Nc3 (better 14.Ba3 Nd4 15.Qd1+-) 14...Rb8 15.Qc2?? (better 15.Nb5!? a6 16.Ba3 ab5 17.Bf8+-) 15...Nd4 (15...Qb6 16.Ke1 Qb2 17.Qb2 Rb2 18.Na4=) 16.Qc1 (16.Qb1 Ne2 17.Nge2 Qb6 18.d4 Qb2+=) 16...Qb6= 17.Rb1?? (better 17.Na4 Ne2 18.Nb6 (worse 18.Ke2 Qa6 19.Kf2 Qa4-/+) 18...Nc1 19.Bc1 Rb6 20.Nf3=) 17...Nb3-+ 18.Ke1 (18.Kg3 Nc1 19.Bc1-+) 18...Nc1 19.Bc1 Qb1 (19...Qb1 20.Nb1 Rb1-+) 0-1. brucepeng (2010) - dukemcnukem (2110), lichess.org, 2021.

6.Be2 c6 7.d4= Bb4 8.Bc3 Bc3 9.Nc3 0-0 10.a4 Qa5 11.Qd2 Nd7 12.Nf3 Nf5 (better is 12...cb5!? 13.Nb5 Qd8+/–) 13.cd5 cd5 14.de5 Qb6? (better is 14...fe5 15.Nd5 Qd8+-) 15.Nd5 Qd8 16.e4 Ne7 17.Rd1 Nd5 18.Qd5 (18.ed5?! Ne5 19.Ne5 fe5+-) 18...Kh8 19.e6 (19.e6 Qa5 20.Qd2 Qd2 21.Rd2+- (21.Nd2?! Nc5+-; 21.Kd2?! Nc5+-)) 1–0. rcm06 (1960) – talentedmrripley, gameknot.com, 2012.

6.Be2 Be6!? +=.

6.Nf3 0-0 7.Nc3 Bg4 (7...e4 8.d4 Bb4 9.Nd2=) 8.Be2 (8.cd5 Nd5 9.Bc4 c6+-) 8...c6 9.d4 White gets the initiative 9...ed4 10.Nd4 Be2 11.Nce2 dc4 12.Qa4 Bd4 13.Qc4 Kh8 14.Nd4 Qd6 15.a4 cb5 16.Qb5 Nbc6 17.0-0 (17.Qb7? Rab8 18.Ba3 Qa3 (18...Rb7?! 19.Bd6 Nd4 20.ed4=) 19.Ra3 Rb7 20.Nc6 Nc6–+) 17...Rfe8 18.Rad1 (worse is 18.Qb7 Rab8 19.Ba3 Nd4 (worse is 19...Rb7 20.Bd6 Nd4 21.ed4+/–) 20.ed4 Qd4= (worse is 20...Rb7 21.Bd6 Kg8 22.Rfe1+/–)) 18...a6 (18...Qd5 19.Nb3 (19.Qb7 Rab8 20.Nc6 Rb7 21.Rd5 Nd5–/+) 19...Qf5 20.Qf5 (20.Qb7? Reb8 21.Qa6 Rb3–+) 20...Nf5 21.Rd5+=) 19.Qb7+/– Reb8? (better is 19...Na5 20.Qe4 Qb4+=) 20.Nc6+- Rb7 21.Rd6 Nc6 22.Bf6! (22.Rc6?! Rb2 23.Rfc1 Kg8+/–) 22...gf6 23.Rc6 Kg7 24.Rfc1 Rb4 25.Ra1 Kg6 26.g3 a5 27.Rc5 f5 28.Rd5 h5 29.h4 Kf6 30.Rd7 (30.Rc1 Ra4 31.Rc6 Kg7 32.Rd7 Kg8 33.Rg6 Kf8+-) 30...Kg6 31.Rc1 Threatening mate: Rc6 31...Ra6 32.Rc8 (32.Rd4!? Rd4 33.ed4 Rd6+-) 32...Ra4 33.Rg8 Kh6 34.Rgg7 (better is 34.Rg5+-) 34...f4?? (better is 34...Rd6+/–) 35.ef4+- (35.gf4?! Rg6 36.Rg6 Kg6 37.Rd6 Kg7+-) 35...Rb4 (35...Rf6 36.Rh7 Kg6 37.Rdg7 Kf5 38.Rh5 Ke4+-) 36.f5 Rb5 37.Rh7 1–0. Zylla,Johannes – Ludewig, Betriebssport Brett, 1988.

6.Qh5 g6+= 7.Qf3 0-0 (7...Bf5 8.d4 Bb4 9.Bc3=) 8.Nc3 (8.cd5 Nd5 9.Bc4 Be6=) 8...d4 (8...c6 9.bc6 bc6 10.cd5 cd5 11.Rc1=) 9.Ne4 (better is 9.Na4 Bb4 10.ed4=) 9...Nf5?? (better is 9...Nd7=) 10.Nc5+- de3 (10...c6 11.Ne2+-) 11.de3 c6 (11...Qd6 12.Qd5 Kg7 13.Bd3+-) 12.Nb3 Be6 (12...Nh4 13.Qe4 Nf5 14.Rd1+-) 13.e4 Nd4 (13...Ng7 14.Ba3 Rf7 15.Rd1+-) 14.Bd4 ed4 15.Qd3 (15.Rd1 Qe7 16.Nd4 Qb4 17.Rd2 Bc4+-) 15...cb5 16.cb5 Nd7 (16...Bb3 17.ab3 Re8 18.Ne2+-) 17.Nf3 (17.Qd4 Bb3 18.ab3 Qe7+-) 17...Ne5 18.Ne5 (better is 18.Qd4!? Nf3 19.gf3 Bb3 20.Qd8 Rfd8 (20...Rad8?? 21.ab3 Kg7 22.Ra7+-) 21.ab3 Kf8+-) 18...fe5 19.Be2 (19.Nc5 Bf7+-) 19...Qh4 (19...Rc8 20.0-0+-) 20.0-0 Rac8 21.Rac1 Rc1 22.Nc1 (worse is 22.Rc1 Qf2 23.Kh1 Qh4+-) 22...Qg5 (22...Qf4 23.g3 Qf6 24.f4+-) 23.Nb3 h5 (23...Qf4 24.Nc5 Ba2 25.Nb7+-) 24.Qg3 (better is 24.Nc5 Qe7 25.Ne6 Qe6 26.Bd1+-) 24...Qh6?? (24...Qg3 25.hg3 Rc8+-) 25.Nc5 (25.Qe5!? Bb3 26.ab3 Qg7 27.Qd5 Kh8+-) 25...Ba2 26.Qe5 Qd2 (26...Qg7 27.Qd6+-) 27.Ne6 Rf7 (27...Be6 28.Qe6 Kg7 29.Bc4+-) 28.Bf3 (better is 28.Nd4 Kh7+-) 28...Bc4 (28...Be6 29.Qe6 Kg7 30.Qe5 Kh7 31.Rd1+-) 29.Qb8 (better is 29.Rd1!? Qh6 30.Rd4 Be6 31.Rd8 Rf8 32.Qe6 Kh8 33.Qf6 Kg8 34.Rf8 Qf8 35.Qg6 Qg7 36.Qe8 Qf8 37.Qh5 Qd6+-) 29...Kh7 30.Rd1 Qc2 (30...Qh6 31.Nd4 a6 32.b6+-) 31.Nd4 (31.Ng5 Kg7 32.Qe5 Kg8 33.Nf7 Kf7 34.Qc7 Ke6 35.Rd4 Qb1 36.Rd1 Qb4 37.Qd7 Kf6 38.Rd6 Qd6 39.Qd6 Kf7 40.Qc7 Kf6 41.Qc4 b6 42.Qd4 Ke6 43.e5 h4 44.Qd6 Kf7 45.Qf6 Kg8 46.Qg6 Kf8 47.Bh5 a6 48.Qf7) 31...Qa4 32.Re1 (32.Qd6 a5+-) 32...Bb5 (32...Rd7 33.Qe5 Qb4+-) 33.Ne6 Qb4 34.Ng5 Kg7 35.Qe5 Kg8 36.Rd1 Rf8 (36...Bc6 37.Be2 Qe7 38.Nf7 Qe5 39.Ne5 Be4 40.Bc4 Kf8 41.Rd8 Ke7 42.Rd7 Kf8 43.Rf7 Ke8 44.Bb5 Kd8 45.f3+-) 37.h3 (37.Qc7 Qe1 38.Re1 Rf6 39.Qh7 Kf8 40.Rd1 Bd3 41.Rd3 Ke8 42.Qg8 Ke7 43.Qd8) 37...a5 (37...Re8 38.Qd5 Kh8+-) 38.Rd6 (38.Qc7 Qe1 39.Kh2 Qg1 40.Kg1 Bd7 41.Qd7 Ra8 42.Qf7 Kh8 43.Qh7) 38...Be8 39.Qe7 Qe1 40.Kh2 Qf2 (40...Qh1 41.Kh1 Bf7 42.Rd8 Kg7 43.Qf8 Kf6 44.Nh7 Ke5 45.Qd6) 41.Qh7 1–0. jaddwarrior (1860) – inukpuk, ChessWorld.net, 2013.

5.d4 Bb4

6.c3 Ba5 (6...Bd6 7.de5 Be5 8.f4+=) 7.de5 Bf5 8.Nf3 c6 (8...fe5 9.Ne5 Nf6 10.Qa4+/–) 9.Nd4 Bd7 (9...Bg6!? 10.ef6 Nf6+/–) 10.e6+- Bc8 11.Ba3 (11.Bd3 g6 12.0-0 c5+-) 11...Ne7 12.Qh5 g6 13.Qh6 Be6? (better is 13...Bc7+-) 14.Ne6 Qd7 15.Qg7 Rg8 16.Qf6 cb5 (16...Nf5+-) 17.Ng7 Kd8 18.Bb5! Nbc6 (18...Qb5 19.Be7 Deflection (19.Be7 Overloading)) 19.Bc6 bc6 20.Be7 Kc8 (20...Qe7 21.Qc6 Bc3 22.Nc3 Rg7 23.Qa8 Kd7 24.Nd5 Qe5+-) 21.Ne6 Bb6 (21...Re8 22.Nc5 Re7 23.Nd7 Kd7 24.0-0+-) 22.Nf8 Kb7 (22...Rf8 23.Qf8 Kb7+-) 23.Nd7 1–0. pcmvr (1700) – mlaurent (1955), net–chess.com, 2006.

6.Nd2 c6 (6...ed4 7.Bd4 Ne7 8.Qh5 g6 9.Qh4=) 7.a4 (better 7.de5!? Nd7 8.bc6 bc6 9.Ngf3 fe5 10.Ne5 Ne5 11.Be5+=) 7...Qa5 (7...ed4!? 8.ed4 Nh6=) 8.de5+=. onur604 (2320) - ABS1186 (1920), lichess.org, 2020.

5.d4 ed4

6.ed4 Bb6 7.c4 dc4 8.Bc4 Ne7 (8...Qe7 9.Kf1=) 9.Nf3+= Nf5 The pressure on the isolated pawn grows (9...a6 10.ba6 Na6 11.0-0+=) 10.0-0+/- h5? (better 10...Qd7+/-) 11.Re1+- Kf8 12.Ba3 Nd6 13.Nh4 g6 (13...g5 14.Bd6 cd6 15.Ng6 Kg7 16.Nh8 Qh8 17.Nc3+-) 14.Ng6 (14.Bd6 cd6 15.Ng6 Kg7 16.Nh8 Bg4+-) 14...Kg7 15.Nh8 Qh8 (15...Bg4 16.Qd3 Bf5 17.Qg3 Kh8 18.Bd6 cd6+-) 16.Re7 Kf8 17.Bd6 cd6 (17...Be6 18.Qe2 Bf7 19.Rf7 Kg8 20.Rc7) 18.Qe2 f5 (18...Qg8 19.Re8 Kg7 20.Rg8 Kh6 21.Qe3 Kh7 22.Qe7 Kh6 23.Qg7) 19.Rf7 Kg8 20.Qe8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.ed4 Bb6 7.Bd3 Ne7 8.Nf3 (8.Ne2; 8.a4) 8...a6 9.a4 Ba5 10.c3 Bf5 11.0-0 +=.

6.ed4 Bb6 7.Nf3 Ne7 (7...Bf5 8.Be2=) 8.Nc3 (8.Bd3 Ba5 9.Bc3 Bc3 10.Nc3 0-0+=) 8...0-0 9.Bd3 Bf5 (9...Bg4 10.Na4=+) 10.Bf5 (10…Nf5 11.0-0=; 10.0-0 Re8=). Waibel,Ulrich – Butler,Thomas J, compuserve, 1995.

6.ed4 Bb4

7.c3 Ba5 8.Nf3 (8.Bd3 Ne7 9.Nf3 a6 10.ba6 Na6 11.Qa4=) 8...a6 9.ba6 Na6 10.Bd3 Ne7 11.0-0=.

7.c3 Qe7 8.Be2 Bd6 9.Nf3 Bg4 10.0-0 Nd7 11.Re1+=.

7.c3 Be7 8.Bd3 (8.c4; 8.Nf3) 8...Nh6 9.Nf3 a6 10.Bc1 Nf7 11.ba6+=.

7.c3 Bf8 8.Bd3 (8.Nf3; 8.Be2; 8.c4) 8...Nh6 9.Nf3 Bd6 10.0-0 0-0 11.Qc2+=.

7.Nd2 Qe7 8.Be2 Be6 (8...Bd7 9.c3 Bd6 10.Qb3=) 9.Ngf3+= Nd7 10.c3 Bd6 11.0-0 Qf7 12.Qc2 (12.a4 Ne7+=) 12...Ne7 13.c4 dc4 (13...Bf5 14.Bd3 Bd3 15.Qd3+=) 14.Nc4+= 0-0 (14...Nb6 15.Nd6 cd6 16.Rfe1+=) 15.Nd6 cd6 16.Ba3 (16.Qc7 Rfc8 17.Qd6 Nf5+-) 16...d5 (16...Rfc8!? 17.Qb1 d5+=) 17.Bd3+- g6 18.Rfe1 Rac8? (better 18...Rfe8+-) 19.Qe2+- Bf5 (19...Bg4 20.Qe7 Qe7 21.Be7+-) 20.Be7 (20.Qe7?! Bd3 21.Qe3 Bb5 22.Bf8 Qf8 23.Qe6 Qf7+-) 20...Rfe8 (20...Bd3 21.Qd3 Rfe8+-) 21.Bf5 gf5 22.Nh4 Nf8 (22...Ne5 23.Nf5 Qg6 24.de5 Qf5 25.Bf6+-) 23.Nf5 (23.Nf5 Kh8 24.Qf3+-) 1–0. onur604 (2320) – ulukyo (2235), lichess.org, 2020.

6.ed4 Bd6

7.Ba3 A) 7...Bf5 8.Bd6 (8.Bd3 Qe7 9.Kf1 Ba3 10.Na3 Be4 11.f3=; 8.Ne2 Ne7 9.Ng3 Ba3 10.Na3 Qd6 11.Qc1=; 8.c4 Ba3 9.Na3 Ne7 10.Nf3 a6 11.Be2=; 8.Qf3 Qe7 9.Kd1 Be4 10.Qh5 Bg6 11.Qf3=) 8...Qd6 9.Bd3 Bd3 10.Qd3 Ne7 11.Ne2=; B) 7...Ba3 8.Na3 Qe7 9.Qe2 Kf7 10.Qe7 Ne7 11.Bd3=; C) 7...Qe7 8.Qe2 Ba3 9.Na3 Be6 10.c4 Nd7 11.c5+=.

7.Nd2 Be6 8.Ngf3 Nd7 (8...a6 9.Bd3=) 9.Bd3 Nb6 (9...Ne7 10.0-0+=) 10.0-0 Qd7 11.Nh4 (11.a4 Nh6+=) 11...g6 12.Re1 0-0-0 13.a4 Nh6 14.a5 Nc4 15.Bc1 Ng4 16.h3 (better 16.Nhf3+=) 16...Nf2? (better 16...Bh2 17.Kf1 Bg3=) 17.Kf2+- Bh3 (17...Bb4 18.Nhf3+-) 18.Nc4 (18.gh3 Qh3 19.Rh1 Qg3 20.Ke2 Rde8 21.Ne4 f5=+; 18.Bc4?! dc4 19.b6 Bc5 20.dc5 Qd4 21.Kf1 Qa1 22.gh3 Qa5 23.ba7 c3+-) 18...dc4 19.Bc4 (19.gh3?! Qh3 20.Rh1 Qg3 21.Kf1 cd3=) 19...Bg4 (19...Bb4 20.Re4 f5 21.Be6 (21.gh3 fe4 22.Qg4 Qg4 23.hg4 Rd4 24.Be6 Kb8=+) 21...fe4 22.Bd7 Bd7 23.b6+-) 20.Qg4! Qg4 21.Be6 Qe6 22.Re6 Rhf8 (22...Kd7 23.Re3+- (23.Rf6?! Be7 24.Rf4 g5+/-)) 23.c3 (23.a6 Kd7 24.d5 Be5+-) 23...Rde8 (23...Kd7 24.Re2+-) 24.Re8 Re8 25.Nf3 h5 26.Ba3 Kd7 27.Bd6 Kd6 (27...cd6 28.a6 b6 29.d5+-) 28.c4 (28.Nh4 Rg8+-) 28...Re4 (28...a6 29.Nh4 Rg8 30.Rb1+-) 29.Re1 Rg4 (29...Re1 30.Ke1 Ke6 31.Ke2+-) 30.Re8 c6 31.c5 Kd5 (31...Kd7 32.b6 ab6 33.a6 ba6 34.cb6 Ke8 35.b7+-) 32.b6 (32.Rd8 Ke6 33.a6 ba6 34.bc6 Ke7+-) 32...ab6 33.cb6 g5 (33...Rd4 34.Nd4 Kc5 35.Re7 Kd4 36.Rb7+-) 34.a6! ba6 35.b7 (35.b7 Rg2 36.Kg2 g4 37.Nh4 Kc4 38.b8Q c5 39.Qb2 Kd5 40.Qb3 Kc6 41.Qe6 Kb5 42.Rb8 Ka4 43.Qa6) 1-0. gytto (2160) - RACIMOV (2105), Rated Blitz game, lichess.org, 2016.

7.Nd2 Qe7 8.Qe2=+.

7.Bd3 Be6 8.Nf3 Nh6 9.Bc1 Nf7 10.0-0 0-0 11.Re1=.

7.Bd3 Nh6 8.Qe2 (8.Qh5; 8.Ne2; 8.Nc3; 8.Bc1) 8...Qe7 9.Qe7 Be7 10.Bc1 a6 11.Bh6=.

7.Be2 A) 7...Ne7 8.Nf3 (8.c4 dc4 9.Bc4 a6 10.Qa4 c6 11.Nf3=; 8.Bh5 g6 9.Be2 a6 10.Nf3 Bg4 11.ba6=) 8...0-0 9.c4 a6 10.c5 Bf4 11.a4=; B) 7...a6 8.ba6 (8.Nc3 Ne7 9.Nf3 0-0 10.0-0 c6 11.a4=; 8.Bd3 Ne7 9.Qh5 g6 10.Qf3 Bf5 11.Bf5+=; 8.Nf3 ab5 9.Bb5 Bd7 10.Be2 Ne7 11.0-0=; 8.a4 Ne7 9.Nf3 0-0 10.0-0 ab5 11.ab5=) 8...Na6 9.Nf3 Ne7 10.0-0 Bf5 11.c4=.

7.Qf3 A) 7...c6 8.a4 (8.Ba3 Ne7 9.Bd6 Qd6 10.Nc3 a6 11.ba6+=; 8.Nd2 Qe7 9.Be2 Be6 10.bc6 Nc6 11.Qb3+=; 8.Bd3 Ne7 9.Ne2 cb5 10.Nbc3 a6 11.Qh5+=; 8.Be2 Ne7 9.c4 Bb4 10.Bc3 Bc3 11.Qc3=) 8...Ne7 9.Bd3 Qa5 10.Bc3 Qc7 11.Ne2=; B) 7...a6 8.Bd3 (8.Ba3 Ne7 9.Bd3 ab5 10.Bb5 c6 11.Bd6+=; 8.Nc3 Ne7 9.Bd3 c6 10.Qh5 g6 11.Qf3+=; 8.Qh5 g6 9.Qf3 Bf5 10.Nc3 c6 11.bc6=; 8.Nd2 Ne7 9.Qh5 g6 10.Qf3 0-0 11.c4+=) 8...Ne7 9.Ne2 ab5 10.Bb5 c6 11.Bd3=.

7.Nf3 a6 8.Nc3 (8.Be2 ab5 9.Bb5 Bd7 10.Be2 Ne7 11.0-0= ; 8.ba6 Na6 9.Be2 Ne7 10.0-0 Bf5 11.c4= ) 8...Ne7 9.Bd3 0-0 10.0-0 Re8 11.Re1=.

7.Nf3 Ne7 8.c4 0-0 9.c5 Bf4 10.Be2 a6 11.Qa4=.

7.Nf3 Ne7 8.Be2 a6 9.0-0 ab5 10.Bb5 Bd7 11.Bd3=.

7.Nf3 Bf5 8.Be2 Ne7 9.c4 0-0 10.0-0 a6 11.c5=.

7.Nf3 Bf5 8.Bd3 (8.Be2 Ne7 9.c4 0-0 10.0-0 a6 11.c5= ; 8.c4) 8...Qe7 9.Be2 Nh6 10.0-0 0-0 11.Re1+=.

7.Nf3 Bg4 8.Be2 (8.Nbd2 a6 9.h3 Bd7 10.a4 Qe7 11.Qe2+=) 8...Ne7 9.0-0 a6 10.ba6 Na6 11.c4=.

7.Nf3 Nh6 8.Be2 0-0 9.c4 dc4 10.Bc4 Kh8 11.0-0=.

7.Qh5 g6 8.Qd5?? (better is 8.Qf3=) 8...Bb4–+ 9.Nc3 (9.c3 Qd5 10.cb4–+) 9...Qd5 (9...Qd5 10.Nf3 Bg4–+) 0–1. GuestNGLS – GuestBFYF, freechess.org, 2017.

7.Bd3 Ne7

8.Nc3 0-0 9.Nf3 Qe8 10.0-0 Qh5 11.Ne2 =.

8.c4 dc4 9.Bc4 a6 10.Qa4 c6 11.Nf3 =.

8.Ne2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 =.

8.Nf3 a6 9.Nc3 0-0 10.0-0 Re8 11.Re1 =.

8.Qh5 g6 9.Qf3 Bf5 10.Bf5 Nf5 11.Nd2 =.

8.Qh5 g6 9.Qf3 Bf5 10.Bf5 Nf5 11.Ne2 =.

8.Qh5 g6 9.Qh6 Ng8?? (9...Nf5 10.Qd2=) 10.Qg7?? (better is 10.Bg6 Kd7 11.Bf5 Ke8 12.Qh5 Ke7 13.Bc8 (13.Bh7 Kf8+=) 13...Qc8 14.Qd5+-) 10...Qe7= 11.Qe7 Ne7 12.Nf3 (12.Ba3 Ba3 13.Na3 a6=) 12...Bg4 13.Nbd2 a6 14.a4 ab5 15.ab5 Ra1 16.Ba1 0-0 (16...Kd8 17.c4=) 17.h3 (17.c4 Re8=) 17...Bf5 18.Bf5 Nf5 19.g4 (19.c4 dc4 20.Bc3 Rd8=) 19...Ng7 (19...Ne7 20.Ke2=) 20.c4 Re8 (20...Nd7 21.c5 Bf4 22.Ke2=) 21.Kd1 dc4 (21...Nd7 22.Re1=) 22.Nc4+= Bf4 23.Re1 Re1 (23...c6 24.bc6 bc6 25.Re8 Ne8 26.Bc3+=) 24.Ne1 Nd7 (24...c6 25.Nd3 cb5 26.Na3+=) 25.Nd3 (25.d5 Ne8+=) 25...Bd6 26.Bc3 (26.d5 Ne8+=) 26...Kf7 (26...f5 27.g5+=) 27.Ke2 (27.Na5 b6 28.Nc4 Ne6+=) 27...Ne6 (27...Ke6 28.Na5+=) 28.Ke3 (28.d5 Nec5+=) 28...Nb6 29.Nb6 cb6 30.f4 (30.Bb4 Bb4 31.Nb4 Nc7=) 30...Nc7= 31.Bb4?? (31.Ke4 Nb5 32.Bb2 Ke7=) 31...Nb5?? (better is 31...Nd5 32.Ke4 Nb4 33.Nb4 Bb4–+) 32.Ke4= Ke6 33.d5 Kd7 34.Bd2 Nc7 (34...Bc5 35.f5=) 35.Bc3 (35.f5 Na6=) 35...f5 36.gf5 gf5 37.Kf5 Nd5 38.Bd4 Kc6 (38...Ke7 39.Be5=) 39.Ke4 Bc5 (39...b5 40.f5=) 40.Bb2 b5?? (40...Nb4 41.Ne5 Kd6 42.Nf3+=) 41.f5?? (better is 41.Ne5 Kd6 42.Nf7 Ke7 43.Kd5+-) 41...Bf8 (41...Be7 42.Nf4 Nf4 43.Kf4=) 42.f6 (42.Ne5 Kd6 43.Nf7 Kc6 44.Nd8 Kd6 45.Nb7 Kc7 46.Kd5 Kb7+/–) 42...b4 (42...Kd6 43.Kf5=) 43.Kf5 (43.Ne5 Kd6 44.Nf7 Kc6+/–) 43...Ne3 (43...Kd7 44.Ne5 Kd6 45.Nf7 Kc6 46.h4+=) 44.Ke6 Nc4 45.Bd4 b5? (45...b3 46.f7+=) 46.Kf7 (46.Bc5 Bc5 47.Nc5 Nd6+-) 46...Bh6? (better is 46...Bd6 47.Kg8 Kd5=) 47.Nb4+- Kd6 48.Nd3 (48.Kg8 Ke6+-) 48...Kd5+/– 49.Bc3 Nd6 (49...Nb6 50.Ba1+/–) 50.Kg8+- Kc4 51.Be5 Nf5 (better is 51...Ne4 52.Ne1 Be3+-) 52.Nb2 (better is 52.Nf4+-) 52...Kb3? (better is 52...Kd5 53.Bc3 Ke6+=) 53.f7+- (53.f7 Kc2 54.Kh7+-) 1–0. Doda (2070) – Macfalanga, Freundschaftspartie, 5m + 0s, 2007.

6.ed4 Qe7

7.Qe2 Bd6 8.Ba3=.

7.Qe2 Bd6 8.c4 Bg4 9.Qe7 Ne7=.

7.Qe2 Bd6 8.g3 Bf5 (8...Be6 9.Bg2+=) 9.Bg2 c6 10.c3 (10.Ba3 Ba3 11.Na3 Be4 12.Be4 de4=) 10...Nd7 (10...Kf7 11.bc6 bc6 12.Nd2+=) 11.a4 (11.Ba3 Kf7 12.bc6 bc6 13.Bd6 Qd6 14.Qh5 Bg6+=) 11...Kf7 12.Qe7 Ne7 13.Nf3 (13.Ba3 c5+=) 13...Rhe8–/+ 14.0-0 Ng6 (14...cb5 15.Ba3 Ba3 16.Na3 ba4 17.Nb5–/+) 15.Re1 (15.Ba3 Ba3 16.Na3 a5+=) 15...Re1–/+ 16.Ne1 Re8 17.Kf1 Nb6 (17...a5 18.Ba3 Ba3 19.Na3+=) 18.Nd2 a5 19.ba6 ba6 20.Ba3 Ke6 (20...Ba3 21.Ra3 a5 22.Rb3 Na4 23.Ra3=) 21.a5 (21.h3 Ba3 22.Ra3 Kd6=) 21...Nd7 22.c4 Ne7 (22...Bc7 23.h3 Ne7 24.Be7 Re7 25.Ra3=) 23.Bd6 Kd6 24.c5 Kc7 25.Ra3 Nc8 (25...g5 26.Re3=) 26.Re3+= Re3 27.fe3 Na7 28.Kf2 ½–½. Oze,Kristian (1845) – Sillye,Kalman (2165), Berze mem 7th, 1996.

7.Be2 Bb4 8.c3 (8.Bc3 Bd7 9.Bb4 Qb4 10.Qd2 Qb2 11.Qc3=) 8...Bd6 9.Nf3 Bg4 10.0-0 Nd7 11.Re1 +=.

7.Be2 Bd6 8.Nf3 Bf5 (8...Bg4 9.0-0 Nd7 10.Nbd2 0-0-0 11.Re1+=) 9.0-0 Nh6 (9...Qd7 10.Re1 Ne7 11.c4+=) 10.Re1 0-0 11.c4 dc4?? (better is 11...Qf7+=) 12.Bc4+- Be6 (12...Kh8 13.Re7 Be7+-) 13.Re6 (13.Re6 Qf7 14.Qe2 Bh2 15.Nh2+-) 1–0. marcosramos (2410) – fersbery (2145), net–chess.com, 2007.

6.Bd4 Bd4

7.ed4 Ne7 8.Nf3 0-0 9.Be2 c6 10.c4 dc4 11.Bc4 Kh8 12.0-0 cb5 13.Bb5 Bd7 14.Bd7 Qd7 15.Nbd2 Nbc6 16.Nb3 Rad8 17.Qc2 g6 (17...Rfe8 18.Rac1=) 18.Rad1 Kg7? (18...b6 19.Rfe1=) 19.Rfe1 (better is 19.Nc5 Qc8 20.Rfe1+-) 19...Rfe8? (better is 19...b6=) 20.Nc5+- Qc7?? (20...Qc8 21.Ne6 Kg8 22.Nd8 Rd8+-) 21.Ne6 (21.Ne6 Kg8 22.Nc7+-) 1–0. valpa – Mercator, playchess.de, 2003.

7.Qd4 Bf5 8.c4 c6 9.Nc3 Ne7 10.a4 a6 11.Rd1 Be6 12.e4 Qd6 (better is 12...Qa5!? 13.cd5 cd5+=) 13.ed5 cd5 14.Nge2 Qd7 15.Nf4 0-0 16.Ne6 Qe6 17.Be2 dc4 18.0-0 ab5 19.ab5 Re8?? (better is 19...Rc8+=) 20.Bc4+- (20.Bc4 Qc4 21.Qc4 Kf8 22.Rfe1+-; 20.Qc4?! Qc4 21.Bc4 Kf8+/–) 1–0. Gratton,D (1745) – Asanin,Zvest, 15th HIT Open B, Nova Gorica SLO, 2010.

7.Qd4 Ne7

8.Nc3 0-0 A) 9.e4 de4 (9...Be6 10.ed5 c6 11.0-0-0 cd5 12.Bc4 a6+= ; 9...c6 10.0-0-0 Qd6 11.ed5 Rd8 12.Qa4 cd5+=) 10.Bc4 Kh8 11.Qe4 c6 12.Rd1 Qc7=; B) 9.Nf3 a6 (9...c6 10.Qd2 a6 11.bc6 Nbc6 12.Be2 b5= ) 10.Rd1 ab5 11.Bb5 c6 12.Be2 Qa5=; C) 9.Bd3 a6 (9...c6) 10.Qa4 c5 11.Rd1 Nd7 12.Qh4 h6= ; D) 9.Rd1 Be6 (9...c6 10.Be2 Qa5 11.Qd2 a6 12.bc6 bc6= ) 10.Nf3 a6 11.Bd3 ab5 12.Qh4 h6=; E) 9.0-0-0 Be6 (9...c6 10.e4 Qd6 11.ed5 Rd8 12.Qa4 cd5+= ) 10.e4 Qd6 11.Nd5 Bd5 12.ed5 a6=.

8.Nc3 a6 9.Rd1 (9.Nf3 0-0 (9...Be6 10.Qa4 Nc8 11.ba6 c6 12.Rb1 b6+=; 9...ab5 10.Bb5 c6 11.Bd3 Qa5 12.0-0 Na6=; 9...c6 10.bc6 Nbc6 11.Qd2 b5 12.Be2 0-0=; 9...b6 10.Qa4 0-0 11.Bd3 Nd7 12.Qh4 f5=) 10.Rd1 ab5 11.Bb5 c6 12.Be2 Qa5= ; 9.ba6 b6 (9...Na6 10.Nf3 c6 11.Ba6 Ra6 12.0-0 Nf5=) 10.Bd3 Na6 11.Nf3 c5 12.Bb5 Bd7=; 9.e4 ab5 (9...de4 10.Qd8 Kd8 11.0-0-0 Nd7 12.ba6 b6=; 9...c6) 10.ed5 c6 11.Rd1 Qa5 12.Rd2 0-0+=; 9.Rb1 ab5 (9...0-0; 9...b6; 9...c6; 9...Qd6) 10.Bb5 Nbc6 11.Bc6 Nc6 12.Qd5 Qd5=) 9...Be6 (9...ab5 10.Bb5 c6 11.Bd3 b5 12.Nge2 Qa5=; 9...c6 10.bc6 Nbc6 11.Qd2 Bf5 12.Nf3 Rc8=; 9...b6 10.Qa4 Bb7 11.ba6 Bc6 12.Qd4 Qd6=) 10.Nf3 ab5 11.Bb5 c6 12.Be2 b5 =.

8.Nc3 c6 A) 9.Bd3 cb5 (9...a6 10.b6 Nd7 11.Na4 Ne5 12.Ne2 Nf5= ; 9...0-0 10.Nge2 cb5 11.Nb5 Nbc6 12.Qa4 Bd7=; 9...Qa5 10.Nge2 cb5 11.Bb5 Nbc6 12.0-0 0-0=; 9...b6 10.Nge2 a6 11.bc6 Nbc6 12.Qa4 Ra7=) 10.Bb5 Nbc6 11.Nf3 0-0 12.Qd2 a6=; B) 9.Rb1 Qa5 (9...Nf5 10.Qd3 Nd6 11.Nf3 Qa5 12.Qd2 a6= ; 9...Bf5 10.Bd3 Nd7 11.bc6 bc6 12.Nge2 c5+=; 9...0-0 10.Nf3 Qa5 11.Qb4 Qb4 12.Rb4 c5=; 9...a6 10.b6 Nd7 11.Nf3 c5 12.Qg4 Kf7=) 10.Be2 a6 11.bc6 Nbc6 12.Qd2 b5+= ; C) 9.Rd1 Qa5 (9...a6 10.bc6 Nbc6 11.Qd2 Bf5 12.Nf3 Rc8= ; 9...0-0 10.Be2 Be6 11.Nf3 a6 12.Qa4 Qb6=; 9...Bf5 10.e4 Be6 11.Nf3 0-0 12.Be2 Qc8=; 9...Nf5 10.Qd2 Qe7 11.bc6 bc6 12.Nd5 cd5+=) 10.Nf3 0-0 11.Be2 cb5 12.Qd2 a6=; D) 9.Qd2 0-0 (9...Nd7 10.Be2 Ne5 11.Nf3 cb5 12.Nb5 Bg4+= ; 9...Bf5 10.Nf3 a6 11.bc6 Nbc6 12.Be2 b5=; 9...a6 10.bc6 Nbc6 11.Rd1 Bf5 12.Nf3 Rc8=; 9...Be6 10.Bd3 a6 11.bc6 Nbc6 12.Nge2 b5=) 10.Nf3 a6 11.bc6 Nbc6 12.Rd1 Be6=; E) 9.Nf3 a6 (9...0-0 10.Be2 a6 11.Qa4 Qd6 12.bc6 Nbc6= ; 9...Qa5 10.Be2 a6 11.bc6 Nbc6 12.Qd2 Be6=; 9...Be6 10.Bd3 Nd7 11.Be2 Nf5 12.Qd2 0-0=; 9...Bf5 10.Bd3 Bd3 11.cd3 cb5 12.0-0 Qd7=) 10.ba6 Na6 11.Ba6 Ra6 12.0-0 Nf5=.

8.Nc3 Be6 A) 9.Nf3 Qd6 (9...Nd7 10.Rd1 c5 11.bc6 bc6 12.Be2 0-0= ; 9...a6 10.Qa4 Nc8 11.ba6 c6 12.Rb1 b6+=; 9...c6 10.Bd3 a6 11.Qa4 Nd7 12.bc6 Nc6=; 9...Nf5 10.Qd2 a6 11.Rd1 ab5 12.Bb5 c6+=) 10.Rd1 Nd7 11.Be2 Nc5 12.0-0 Nf5= ; B) 9.Rd1 0-0 (9...a6 10.Nf3 ab5 11.Bb5 c6 12.Be2 b5= ; 9...Nd7 10.Nf3 c5 11.bc6 bc6 12.Be2 0-0=; 9...Qd6 10.Bd3 Nd7 11.Nge2 Nc5 12.0-0 Nd3=; 9...c6 10.Bd3 a6 11.bc6 Nbc6 12.Qh4 Ne5=) 10.Nf3 a6 11.Bd3 ab5 12.Qh4 h6=; C) 9.e4 Qd6 (9...0-0 10.ed5 c6 11.0-0-0 cd5 12.Bc4 a6+= ; 9...c6 10.Rd1 Qa5 11.Qd2 0-0 12.ed5 cd5=) 10.Rd1 c5 11.Qd3 d4 12.Nce2 Ba2=; D) 9.Be2 a6 (9...Nf5 10.Qd2 a6 11.Nh3 c6 12.bc6 bc6+=; 9...0-0 10.Nf3 a6 11.Qa4 Qd6 12.Rb1 Nd7=) 10.Bh5 Bf7 11.Bf7 Kf7 12.Nf3 ab5=; E) 9.Bd3 a6 (9...Nd7 10.Nge2 c5 11.bc6 Nc6 12.Qh4 Nde5= ; 9...0-0 10.Nf3 a6 11.Rb1 ab5 12.Rb5 b6+=; 9...Qd7 10.Nge2 a6 11.Qa4 Nc8 12.0-0 Nb6+=; 9...c6 10.Nf3 Qa5 11.Rb1 Nd7 12.Qb4 Qb4=) 10.Qa4 Nd7 11.ba6 c6 12.Nf3 Nc5=.

8.Nc3 Bf5 9.0-0-0 (9.Rd1) 9...c6 (9...Be6 10.e4 c6 11.ed5 cd5 12.Bc4 Nd7+/–) 10.e4 Be6 11.ed5 cd5 12.Bc4 Nd7 +/–.

8.c4 0-0 9.Nc3 (9.cd5; 9.Nf3; 9.Bd3) 9...c6 10.cd5 Nd5 11.Bc4 Be6 12.Bd5 Bd5 +=.

8.c4 a6 A) 9.cd5 Nd5 (9...Qd5 10.Qb2 0-0 11.Nc3 Qf7 12.Rc1 Rd8=) 10.Nf3 c6 11.Bd3 0-0 12.ba6 Qa5=; B) 9.Nf3 dc4 (9...ab5 10.cb5 Bf5 11.Nc3 0-0 12.Be2 Qd6=; 9...Be6 10.cd5 Nd5 11.Qe4 Kf7 12.Nd4 Qd7=) 10.Qc4 ab5 11.Qb5 c6 12.Qb3 b5=; C) 9.Nc3 ab5 10.cd5 c6 11.Rd1 Qa5 12.Rd2 0-0=.

8.c4 dc4 A) 9.Bc4 Qd4 (9...Bd7 10.Nc3 a6 11.Rd1 ab5 12.Nb5 Na6+=) 10.ed4 a6 11.Nc3 Bf5 12.ba6 Na6=; B) 9.Qd8 Kd8 10.Bc4 a6 11.Nc3 ab5 12.Nb5 Bd7=.

8.c4 c6 9.Nf3 (9.Nc3 Be6 10.cd5 Nd5 11.Nd5 Qd5 12.Nf3 Nd7=; 9.cd5 Nd5 (9...Qd5 10.Nc3 Qd4 11.ed4 Be6 12.Nge2 Nd7=) 10.Nf3 a6 11.Bd3 0-0 12.ba6 Qa5=; 9.Nd2 a6 (9...Be6; 9...Nf5; 9...0-0; 9...Qa5) 10.cd5 ab5 11.e4 Be6 12.Ngf3 cd5=; 9.Bd3 a6 (9...dc4; 9...Be6; 9...Bf5) 10.cd5 Qd5 11.bc6 Qd4 12.ed4 Nbc6+=) 9...a6 (9...Be6 10.cd5 Nd5 11.Qe4 Qe7 12.Nd4 Bd7+=; 9...Nf5 10.Qc3 Be6 11.Nbd2 Qe7 12.Rd1 0-0=) 10.cd5 Qd5 11.ba6 Qd4 12.Nd4 Na6 =.

8.c4 Qd6 A) 9.cd5 Qd5 (9...Nd5 10.Nc3 Be6 11.Rd1 Nc3 12.Qc3 Qe7+=) 10.Nf3 Qd4 11.Nd4 c5 12.bc6 Nbc6=; B) 9.Nc3 Be6 (9...c5 10.Qd2 d4 11.ed4 cd4 12.Nf3 Qe6+=) 10.cd5 Nd5 11.Rd1 Nc3 12.Qc3 Qe7+=.

8.c4 Be6 A) 9.Nc3 Nf5 (9...Qd6 10.cd5 Nd5 11.Rd1 Nc3 12.Qc3 Qe7+= ; 9...c6 10.cd5 Nd5 11.Nd5 Qd5 12.Nf3 Nd7=) 10.Qd3 d4 11.Qe4 Kf7 12.Rd1 Nd7=; B) 9.Nf3 dc4 (9...Nf5 10.Qc3 Qd7 11.Na3 Nd6 12.Rd1 c6+= ; 9...Nd7 10.cd5 Nd5 11.Bd3 Qe7 12.0-0 N7b6=) 10.Nbd2 a6 11.Bc4 Qd4 12.Nd4 Bc4=; C) 9.Nd2 c6 (9...Nd7 10.cd5 Nd5 11.Ngf3 Qe7 12.Rc1 N7b6= ; 9...0-0 10.Bd3 a6 11.Ngf3 ab5 12.cb5 Qd6=; 9...Nf5 10.Qf4 Nd6 11.c5 g5 12.Qa4 Nf5+=; 9...a6 10.Ngf3 ab5 11.cb5 Qd6 12.Bd3 0-0=) 10.cd5 Nd5 11.Ngf3 Qe7 12.Bc4 a6=; D) 9.Ne2 dc4 (9...c5; 9...Qd6) 10.Qd8 Kd8 11.Nd2 a6 12.Nd4 Bd5= ; E) 9.cd5 Nd5 (9...Qd5 10.Nf3 c5 11.Qa4 Qd6 12.Nc3 Nd7+= ) 10.Nf3 Nd7 11.Bd3 Qe7 12.0-0 N7b6=.

8.Qd1 0-0 A) 9.Nf3 a6 (9...Bg4; 9...Re8; 9...Qd6; 9...c6) 10.Bd3 ab5 11.Bb5 Nbc6 12.Bc6 Nc6+=; B) 9.Bd3 a6 (9...Nd7; 9...Bd7; 9...c5; 9...c6) 10.Nf3 ab5 11.Bb5 Nbc6 12.Bc6 Nc6+=; C) 9.Nc3 a6 (9...c6; 9...Qd6) 10.Nf3 ab5 11.Bb5 c6 12.Bd3 Bg4+=; D) 9.Nd2 a6 (9...Bf5; 9...Re8; 9...Qe8; 9...Bd7) 10.Ngf3 Re8 11.Bd3 ab5 12.Bb5 c6=; E) 9.c4 a6 (9...Be6 10.cd5 Nd5 11.Bc4 a6 12.Nc3 Nf4=; 9...c5 10.cd5 Nd5 11.Bc4 Be6 12.Nf3 Nc7=; 9...Re8 10.cd5 Nd5 11.Bc4 Be6 12.Nc3 Nf4=) 10.cd5 ab5 11.Bb5 c6 12.Bc4 cd5=.

8.Qd1 a6 9.Qh5 (9.Nc3 0-0 (9...Bf5; 9...ab5; 9...Be6; 9...c6) 10.Nf3 ab5 11.Bb5 c6 12.Bd3 Bg4+=; 9.Nf3 Bg4 (9...0-0; 9...b6; 9...Bf5; 9...Qd7) 10.Bd3 ab5 11.Bb5 Nd7 12.0-0 c6+=; 9.Bd3 ab5 (9...0-0; 9...Bd7; 9...Bf5; 9...Be6) 10.Bb5 Bd7 11.Be2 0-0 12.Nf3 b5=; 9.c4 dc4 (9...ab5 10.cb5 Bf5 11.Nf3 c5 12.bc6 bc6=; 9...Be6; 9...Qd6; 9...0-0) 10.Qd8 Kd8 11.Bc4 ab5 12.Bb5 Nd5+=) 9...g6 10.Qd1 ab5 11.Bb5 c6 12.Bd3 Na6 =.

8.Nd2 0-0 A) 9.Bd3 a6 10.Qa4 Bf5 11.Ngf3 Nd7 12.Bf5 Nf5=; B) 9.c4 Be6 (9...a6 10.cd5 ab5 11.Bb5 Nd5 12.Ngf3 c6= ; 9...f5 10.Ngf3 a6 11.Bd3 ab5 12.cb5 Ra3=) 10.Bd3 a6 11.Ngf3 Bf7 12.ba6 Na6=; C) 9.Qf4 Re8 (9...a6 10.Ngf3 Ng6 11.Qa4 Ne5 12.Be2 Qe7= ; 9...Ng6; 9...Nd7; 9...c5) 10.Bd3 a6 11.Ngf3 ab5 12.Bb5 Bd7=; D) 9.Be2 Nf5 (9...a6 10.c4 ab5 11.cb5 Nf5 12.Qc3 Re8= ; 9...Bf5; 9...c6) 10.Qf4 a6 11.Bd3 Nd6 12.ba6 Na6=; E) 9.Ngf3 a6 (9...Nf5 10.Qf4 a6 11.Bd3 Nd6 12.c4 dc4=) 10.c4 ab5 11.cb5 Bf5 12.Be2 Qd6=.

8.Nd2 a6 9.Ngf3 (9.ba6 Na6 (9...b6) 10.Ngf3 0-0 11.Bd3 c5 12.Qc3 c4=; 9.Bd3 ab5 (9...0-0) 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Qd6= ; 9.Qa4 Bf5 (9...0-0 10.Bd3 Bf5 11.Ngf3 Nd7 12.Bf5 Nf5=; 9...Bd7 10.Ngf3 Nc8 11.Qb3 Nb6 12.c4 ab5=; 9...c6 10.Rb1 0-0 11.Ngf3 Nd7 12.bc6 bc6=; 9...c5 10.Ngf3 0-0 11.Be2 b6 12.0-0 Bb7=) 10.Ngf3 Nd7 11.ba6 0-0 12.e4 Be6= ; 9.c4 c6 (9...Be6 10.Ngf3 ab5 11.cb5 Qd6 12.Bd3 0-0=; 9...dc4 10.Qc4 ab5 11.Qb5 Nec6 12.Ngf3 b6=; 9...ab5 10.cb5 Nf5 11.Qc5 Be6 12.Bd3 Nh4=) 10.cd5 ab5 11.e4 Be6 12.Ngf3 cd5=) 9...b6 (9...Bf5 10.c4 dc4 11.Qc4 c6 12.bc6 Nbc6=; 9...Bd7 10.Qa4 Nc8 11.Qb3 Nb6 12.c4 ab5=; 9...0-0 10.c4 ab5 11.cb5 Bf5 12.Be2 Qd6=; 9...Nf5 10.Qa4 c6 11.bc6 Nc6 12.Bd3 Be6=) 10.Bd3 ab5 11.Bb5 Bd7 12.Bd3 c5 =.

8.Nd2 c6 A) 9.c4 a6 (9...Be6; 9...Nf5; 9...0-0; 9...Qa5) 10.cd5 ab5 11.e4 Be6 12.Ngf3 cd5=; B) 9.Bd3 Qa5 (9...cb5 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Bf5= ; 9...0-0; 9...Bf5; 9...a6) 10.Rb1 Nd7 11.Ne2 c5 12.Qc3 Qc3= ; C) 9.Ngf3 a6 (9...Qa5 10.c4 Be6 11.cd5 Bd5 12.e4 Be6= ; 9...Bd7; 9...Nf5; 9...0-0) 10.ba6 Na6 11.Bd3 c5 12.Qb2 c4= ; D) 9.Be2 Qa5 (9...cb5 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Bf5= ; 9...Nf5 10.Qf4 Nd6 11.c4 Be6 12.bc6 Nc6=; 9...Bf5 10.c4 dc4 11.Nc4 Qd4 12.ed4 Kd7=; 9...a6 10.ba6 Na6 11.Ngf3 Qa5 12.0-0 Nb4=) 10.Bh5 g6 11.Be2 0-0 12.c4 Be6=; E) 9.Rb1 Nd7 (9...Qa5 10.Bd3 Nd7 11.bc6 Nc6 12.Qg4 Kf8= ; 9...a6 10.Qa4 0-0 11.Ngf3 Nd7 12.bc6 Nc6=; 9...cb5 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Bf5=; 9...0-0 10.Ngf3 Qa5 11.Qb2 c5 12.Be2 a6=) 10.bc6 bc6 11.Ngf3 Qa5 12.Bd3 c5=.

8.Nd2 Qd6 A) 9.Bd3 a6 (9...Nf5 10.Qg4 g6 11.c4 Qe5 12.Rc1 Ne7+=; 9...Bf5 10.Ngf3 a6 11.e4 Qe6 12.0-0 de4+=; 9...0-0 10.Ngf3 a6 11.a4 Bf5 12.0-0 Re8=; 9...c5 10.Ne4 Qh2 11.Rh2 cd4 12.Nd6 Kd7+=) 10.Qa4 Bf5 11.e4 de4 12.Ne4 Qe5=; B) 9.Rd1 a6 (9...Nf5; 9...Be6; 9...0-0; 9...Qa3) 10.Qa4 Nd7 11.ba6 0-0 12.Qh4 b6+=; C) 9.Rb1 a6 (9...Nf5 10.Qb4 c5 11.bc6 Qb4 12.Rb4 Nc6= ; 9...c5; 9...0-0; 9...Be6) 10.Qa4 0-0 11.Bd3 Nd7 12.Qh4 f5+= ; D) 9.Qc3 0-0 (9...a6; 9...Bf5; 9...Bg4; 9...Bd7) 10.Ngf3 a6 11.a3 ab5 12.Bb5 c6=; E) 9.Ngf3 a6 (9...Nf5 10.Qd3 a6 11.c4 dc4 12.Qc4 ab5= ; 9...Bf5 10.c4 c5 11.Qh4 Nd7 12.cd5 Nd5+=; 9...0-0 10.c4 c5 11.Ne4 cd4 12.Nd6 de3+=; 9...Be6 10.Bd3 a6 11.Qa4 0-0 12.Rb1 Nd7=) 10.Qa4 0-0 11.Bd3 Bf5 12.Bf5 Nf5=.

8.Nd2 Be6 A) 9.Bd3 a6 (9...Nf5 10.Qf4 Nd6 11.Ngf3 Qe7 12.0-0 Nd7= ; 9...0-0 10.Ngf3 a6 11.c4 ab5 12.cb5 Ra3=; 9...Qd6 10.Ngf3 Nd7 11.0-0 Ne5 12.Qc3 0-0+=) 10.Qa4 0-0 11.Ne2 Bf5 12.Nd4 Bd3=; B) 9.Rd1 a6 (9...Nf5 10.Qf4 Qd6 11.Ne2 Qe7 12.Nc3 g5= ; 9...0-0; 9...c6; 9...Nd7) 10.Qa4 0-0 11.Bd3 Nd7 12.Qh4 Ng6= ; C) 9.Ngf3 0-0 (9...a6 10.Qa4 0-0 11.Bd3 Nd7 12.Qh4 Ng6= ; 9...Nf5 10.Qf4 g5 11.Qa4 Nd7 12.Be2 Qe7=; 9...Qd6 10.Bd3 Nd7 11.0-0 Ne5 12.Qc3 0-0=; 9...c6 10.Rb1 Qa5 11.Bd3 a6 12.a4 b6+=) 10.Bd3 a6 11.c4 Bf7 12.cd5 Bd5=.

8.Nd2 Bf5 A) 9.Bd3 Qd7 (9...a6 10.Bf5 Nf5 11.Qd3 Qd7 12.c4 Ne7= ; 9...Bd3; 9...0-0; 9...Qd6) 10.Ngf3 Bd3 11.Qd3 a6 12.Rb1 ab5= ; B) 9.c4 dc4 (9...Be6 10.cd5 Bd5 11.e4 Bg8 12.Qc3 Nd7= ; 9...a6 10.cd5 ab5 11.Bb5 c6 12.dc6 Nbc6+/– 1.03; 9...c6 10.cd5 cd5 11.Ngf3 Qa5 12.Be2 a6+=; 9...Qd7 10.cd5 Nd5 11.Rd1 c6 12.Ngf3 Bg6+=) 10.Qd8 Kd8 11.Rd1 a6 12.Nc4 Nd7=.

8.Nd2 Nf5 A) 9.Qc3 0-0 (9...d4 10.ed4 Qd4 11.Qd4 Nd4 12.0-0-0 a6= ; 9...a6; 9...Nd6; 9...Bd7) 10.Ngf3 a6 11.ba6 Na6 12.Bd3 Qe7=; B) 9.Qd3 Qd6 (9...Be6 10.c4 Ne7 11.e4 c6 12.Ngf3 0-0= ; 9...0-0 10.c4 Ne7 11.cd5 Nd5 12.Rc1 c6=; 9...a6 10.Ngf3 ab5 11.Qb5 c6 12.Qb1 Na6=; 9...c5) 10.c4 d4 11.e4 Ne7 12.Ne2 c5+=; C) 9.Qf4 a6 (9...Nd6 10.c4 dc4 11.Bc4 a6 12.ba6 Na6= ; 9...Be6 10.Bd3 Nd6 11.Ngf3 a6 12.Qa4 Bd7=; 9...Qd6 10.Ne2 a6 11.Qd6 Nd6 12.Nf4 ab5=; 9...Qe7 10.Bd3 Nd6 11.Ngf3 a6 12.Qa4 Bd7=) 10.Bd3 Nd6 11.ba6 Na6 12.Ne2 Nc5=; D) 9.Qg4 0-0 (9...Be6) 10.Qf3 a6 11.Bd3 Nh6 12.Rb1 ab5+= ; E) 9.Qb4 a6 (9...Be6 10.Ngf3 Nd7 11.c4 c5 12.bc6 bc6+= ; 9...Nd6 10.c4 Be6 11.Ngf3 0-0 12.Nd4 Bf7+=; 9...Nd7 10.Bd3 Ne5 11.Ngf3 Qd6 12.Rb1 Qb4=; 9...Qd6 10.Qd6 Nd6 11.Rb1 a6 12.b6 cb6=) 10.Ngf3 Qd7 11.c4 dc4 12.Bc4 Nd6=.

8.Bd3 0-0 A) 9.Nf3 a6 (9...Bf5 10.Nc3 c6 11.0-0 Qd6 12.Bf5 Nf5+=; 9...Re8 10.c4 a6 11.Nc3 ab5 12.cd5 c6+=; 9...c6 10.c4 Bf5 11.Bf5 Nf5 12.Qd3 Qa5+=; 9...Be6 10.0-0 a6 11.c4 ab5 12.cb5 Qd6+=) 10.Qa4 Nd7 11.Qh4 h6 12.ba6 b6=; B) 9.Ne2 a6 (9...Bf5 10.Nbc3 c6 11.Bf5 Nf5 12.Qd3 Ne7=; 9...c6 10.a4 Bf5 11.0-0 Nd7 12.Bf5 Nf5=; 9...Re8 10.c4 a6 11.cd5 Nd5 12.Bc4 Be6+=; 9...Qd6 10.Nbc3 c5 11.Ne4 cd4 12.Nd6 de3=) 10.c4 ab5 11.cb5 Nd7 12.Qh4 h6=; C) 9.c4 a6 (9...Be6 10.Nf3 Kh8 11.cd5 Bd5 12.e4 Be6=; 9...Re8 10.Nc3 Be6 11.Rd1 c6 12.Nge2 Qc8+=; 9...c6 10.Nf3 a6 11.0-0 ab5 12.cb5 cb5+=; 9...Kh8 10.Nf3 Be6 11.cd5 Bd5 12.e4 Be6=) 10.Nc3 c6 11.ba6 Na6 12.cd5 Nd5=.

8.Bd3 a6 A) 9.Nf3 ab5 (9...Qd7; 9...Bf5; 9...0-0) 10.Bb5 c6 11.Bd3 Qa5 12.Nbd2 c5+=; B) 9.Ne2 ab5 10.Bb5 Bd7 11.Bd3 Nbc6 12.Qb2 b6=; C) 9.Nc3 0-0 (9...ab5 10.Nb5 c6 11.Nc3 Nd7 12.Qg4 0-0= ; 9...Be6; 9...c6; 9...Qd7) 10.Qh4 g6 11.ba6 Na6 12.Nf3 c5+= ; D) 9.ba6 b6 (9...Na6 10.Nf3 c5 11.Qb2 c4 12.Be2 Qa5=) 10.Nf3 Na6 11.0-0 Nc5 12.Nc3 Nd3=; E) 9.Qa4 0-0 (9...Qd7 10.Ne2 b6 11.Nbc3 Bb7 12.Qf4 Ng6= ; 9...Bd7 10.Nc3 0-0 11.Nf3 c6 12.0-0 cb5=; 9...Qd6 10.Nf3 Nd7 11.ba6 ba6 12.Nbd2 Rb8=; 9...c6 10.bc6 Nbc6 11.Nf3 Bf5 12.0-0 b5=) 10.Nf3 Nd7 11.Qh4 h6 12.ba6 b6=.

8.Bd3 c6 9.Ne2 (9.Nf3 Qa5 (9...cb5 10.Bb5 Bd7 11.Bd3 Nbc6 12.Qb2 Bg4=; 9...a6 10.bc6 Nbc6 11.Qf4 Qa5 12.Nbd2 Qc3=; 9...Bf5 10.0-0 Bd3 11.Qd3 Nd7 12.bc6 bc6=; 9...0-0 10.c4 a6 11.0-0 ab5 12.cb5 cb5=) 10.Qc3 Qc3 11.Nc3 a6 12.bc6 Nbc6= ; 9.Nc3 cb5 (9...a6 10.b6 Bf5 11.Nf3 Nd7 12.Na4 Rc8=; 9...0-0 10.Nge2 cb5 11.Nb5 Nbc6 12.Qa4 a6=; 9...Qa5 10.Nge2 a6 11.bc6 Nbc6 12.Qa4 b5=; 9...b6 10.Nge2 a6 11.Qa4 Bd7 12.bc6 Nbc6+=) 10.Bb5 Nbc6 11.Nge2 a6 12.Qa4 Bf5=; 9.Nd2 Qa5 (9...cb5 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Bf5=; 9...0-0; 9...Bf5; 9...a6) 10.Rb1 Nd7 11.Ne2 c5 12.Qc3 Qc3=; 9.Qa4 Nd7 (9...0-0 10.Nf3 Bd7 11.c4 dc4 12.Bc4 Kh8=; 9...Bd7 10.Nc3 a6 11.Nf3 cb5 12.Nb5 0-0=) 10.bc6 bc6 11.Nf3 Nc5 12.Qa3 Qd6=) 9...cb5 (9...a6 10.ba6 Na6 11.0-0 c5 12.Bb5 Bd7=; 9...Bf5 10.0-0 Bd3 11.Qd3 Nd7 12.Nd4 Ne5=; 9...Qa5 10.Qc3 Qc3 11.Nbc3 Nd7 12.bc6 bc6+=) 10.Bb5 Bd7 (10...Nbc6 11.Qd2 0-0 12.0-0 a6=) 11.Bd3 (11.Qb2 Qa5 12.Nbc3 Nbc6=) 11...Nbc6 12.Qb2 Qc7 13.Nbc3 0-0 14.Rb1 Rab8 15.0-0 Qe5 16.Qa3 Bg4 17.Rfe1 f5 18.Nf4 g5 19.Nfd5 Nd5 20.Bc4 Bh5 21.Bd5 Bf7 22.Red1 a6 23.Rd3 Qf6 24.Qc5 Rfc8 25.Qb6 Qg6 26.e4 Bd5 27.Rd5 fe4 28.Re1 Re8 29.Qc5 b6 30.Qc4 Kh8 31.Ne4 (31.Re4?! b5 32.Qd3 b4+=; 31.Qa6?! Nb4 32.Qb5 Nd5 33.Nd5 Rbc8=) 31...g4 32.Kf1 Rbc8 33.Rd6 (33.Qa6 Nb4 34.Qb7 Nd5 35.Qd5 Rc2 36.Qd4 Qg7 37.Qb6 Ra2–/+) 33...Qg8 34.Qg8 Rg8 35.Nf6 Rgd8 36.Ree6 Rd6 37.Rd6 Ne5 38.Rb6 Rc2?? (38...Kg7+-) 39.Rb7 Rc1 40.Ke2 Rc2 41.Kd1 1–0. pcmvr (2735) – jjones (2685), net–chess.com, 2007.

8.Bd3 Be6 9.Ne2 0-0 10.0-0 c6 11.Nbc3 cb5 12.Qh4 Ng6 13.Qh5 (13.Bg6 hg6 14.Nd4 Bf5 15.Nf5 gf5+/–) 13...Bf7 14.Rfb1 Nd7 15.Rb5 Increasing the pressure on the isolated pawn on d5 (15.Nd5?! Nde5 16.Ndc3 Nd3 17.cd3 Ne5=) 15...Nb6 16.a4 a6 17.Rb4 Nf4?? (better is 17...f5+-) 18.Qh7 1–0. pcmvr (2845) – pallen (2125), net–chess.com, 2011.

8.Bd3 Bf5 A) 9.Ne2 Bd3 (9...c6 10.0-0 Bd3 11.Qd3 Nd7 12.Nd4 Ne5= ; 9...Qd7 10.Bf5 Nf5 11.Qd3 c6 12.Nbc3 Nd6+=; 9...a6 10.Bf5 Nf5 11.Qd3 Ne7 12.Nbc3 Qd7=; 9...Qd6 10.Nbc3 Bd3 11.cd3 a6 12.Rc1 0-0+=) 10.cd3 a6 11.ba6 Na6 12.0-0 0-0= ; B) 9.Bf5 Nf5 10.Qg4 g6 11.Nc3 c6 12.bc6 bc6=; C) 9.Nc3 c6 (9...Bd3 10.cd3 a6 11.Rb1 0-0 12.b6 c6=) 10.Nf3 Bd3 11.cd3 cb5 12.0-0 Qd7=; D) 9.Nd2 Qd7 (9...a6 10.Bf5 Nf5 11.Qd3 Qd7 12.c4 Ne7= ; 9...Bd3; 9...0-0; 9...Qd6) 10.Ngf3 Bd3 11.Qd3 a6 12.Rb1 ab5= ; E) 9.Nf3 Bd3 (9...Qd7 10.0-0 a6 11.ba6 Na6 12.Nbd2 0-0= ; 9...a6 10.Nc3 Bd3 11.Qd3 Nd7 12.ba6 ba6=) 10.cd3 a6 11.ba6 Na6 12.0-0 0-0=.

8.Bd3 Nf5 9.Qf4 (9.Qa4; 9.Qg4) 9...Ne7 (9...Nd6 10.Nc3 Be6 11.Nge2 Nd7 12.Qg3 g5+=; 9...Qd6 10.Ne2 c6 11.Nbc3 a6 12.b6 Qe5+=; 9...g5 10.Qf3 Nh4 11.Qh5 Ke7 12.g3 Ng6+/–; 9...Nh6 10.Nf3 a6 11.Nc3 c6 12.Qa4 0-0+=) 10.Nf3 a6 11.Nc3 c6 12.Qa4 Nd7 +=.

8.Be2 0-0 A) 9.c4 Be6 (9...a6 10.Nc3 ab5 11.cd5 c6 12.Nf3 Nd5=) 10.Nc3 Nf5 11.Qd3 d4 12.Rd1 c5=; B) 9.Nc3 a6 10.Rd1 ab5 11.Bb5 c6 12.Bd3 Qa5+=; C) 9.Nd2 Nf5 (9...a6 10.c4 ab5 11.cb5 Nf5 12.Qc3 Qd6= ; 9...Bf5 10.c4 a6 11.cd5 Bg6 12.ba6 Na6+=) 10.Qf4 a6 11.Bd3 Nd6 12.ba6 Na6=; D) 9.Nf3 a6 (9...Nf5 10.Qd2 a6 11.Nc3 Be6 12.Bd3 ab5= ; 9...Be6 10.0-0 a6 11.c4 Nf5 12.Qc3 ab5=; 9...Qd6 10.0-0 Bf5 11.c4 c5 12.Qd2 Rd8+=; 9...Re8 10.c4 Be6 11.0-0 a6 12.Rd1 ab5=) 10.c4 ab5 11.cb5 Qd6 12.0-0 Be6=.

8.Be2 a6 9.Bh5 (9.Qa4 0-0 (9...Nd7 10.Nf3 Nb6 11.Qb4 0-0 12.ba6 ba6=; 9...Qd7; 9...c6; 9...Bf5) 10.Nf3 Nd7 11.0-0 Nb6 12.Qf4 ab5=; 9.Nf3 ab5 (9...Qd6; 9...Bf5; 9...Qd7; 9...0-0) 10.Bb5 c6 11.Bd3 Qa5 12.Qc3 b5=; 9.ba6 Na6 (9...b6 10.Bh5 g6 11.Bf3 Rf8 12.Nc3 c6+=) 10.Nf3 Bf5 11.0-0 Bc2 12.Qb2 Bb1=) 9...Kf8 (9...g6 10.Bf3 0-0 11.c4 ab5 12.cd5 Qd6=) 10.c4 Qd6 11.Nc3 dc4 12.Qc4 Be6 =.

8.Be2 c6 A) 9.Bh5 g6 (9...Kf8 10.Be2 cb5 11.Bb5 Nbc6 12.Bc6 Nc6= ) 10.Be2 Nf5 11.Qa4 a6 12.Nc3 Qd6=; B) 9.Nd2 a6 (9...cb5 10.Bb5 Nbc6 11.Ngf3 0-0 12.Qb2 Bf5= ; 9...0-0 10.c4 a6 11.Ngf3 ab5 12.cb5 Nf5=; 9...Nf5 10.Qa4 Bd7 11.Ngf3 Nd6 12.bc6 Nc6=; 9...Bf5 10.c4 dc4 11.Nc4 Qd4 12.ed4 Kd7=) 10.ba6 Na6 11.Ngf3 Qa5 12.0-0 Nb4=; C) 9.Qd2 0-0 (9...a6 10.bc6 Nbc6 11.Nf3 b5 12.0-0 Qa5= ; 9...Bf5 10.Nf3 cb5 11.Bb5 Nbc6 12.Nc3 a6=; 9...Qc7 10.Nf3 a6 11.bc6 Nbc6 12.0-0 Be6=; 9...cb5 10.Bb5 Nbc6 11.Ne2 0-0 12.0-0 Bg4=) 10.Nc3 a6 11.bc6 Nbc6 12.Rd1 Be6=; D) 9.Nc3 0-0 (9...cb5 10.Bb5 Nbc6 11.Nf3 0-0 12.Qd2 a6= ; 9...Bf5 10.Qd2 0-0 11.Nf3 Nd7 12.0-0 Ne5=; 9...a6 10.bc6 Nbc6 11.Qd2 d4 12.ed4 Qd4=) 10.Qd2 Be6 11.Rd1 a6 12.bc6 Nbc6=; E) 9.Nf3 a6 (9...Bf5 10.Qd2 cb5 11.Bb5 Nbc6 12.Nc3 a6= ; 9...0-0 10.c4 a6 11.0-0 ab5 12.cb5 Qd6=; 9...cb5 10.Bb5 Nbc6 11.0-0 a6 12.Qa4 Bf5=; 9...Nf5 10.Qa4 Qb6 11.Nbd2 Be6 12.0-0 0-0+=) 10.bc6 Nbc6 11.Qd2 b5 12.0-0 Qa5=.

8.Be2 Qd6 A) 9.Nc3 Be6 (9...Bf5 10.Rd1 Nd7 11.Bh5 g6 12.Bf3 c6+= ; 9...0-0 10.Rd1 Be6 11.Nf3 a6 12.0-0 ab5=; 9...a6 10.Bh5 Kd8 11.Bf7 ab5 12.Nb5 Qe5=; 9...Nd7 10.Rd1 Nb6 11.a4 Be6 12.a5 Nd7=) 10.Nf3 Nd7 11.Rd1 Nc5 12.0-0 Nf5= ; B) 9.Nf3 a6 (9...0-0 10.0-0 a6 11.c4 ab5 12.cb5 Be6=; 9...Bf5 10.c4 c5 11.Qd1 Be6 12.Nc3 Qd7+=; 9...c5 10.Qd2 0-0 11.Nc3 Be6 12.0-0 Nd7=) 10.Nc3 Bf5 11.Qd2 ab5 12.Nb5 Qd7=; C) 9.Qc3 a6 (9...0-0; 9...Bd7; 9...Nd7; 9...Bf5) 10.Nf3 ab5 11.Bb5 c6 12.Bd3 b5=; D) 9.Bh5 g6 (9...Kd8 10.Nc3 a6 11.Bf7 ab5 12.Nb5 Qe5= ; 9...Kf8 10.Nc3 a6 11.Bf3 ab5 12.Nb5 Qd7=) 10.Bf3 Nd7 11.Nc3 c6 12.Be2 Nf5=; E) 9.c4 Be6 (9...c5 10.Qd2 0-0 11.Nc3 d4 12.ed4 cd4+=) 10.Bh5 g6 11.Bf3 Nd7 12.Nc3 c5=.

8.Be2 Bf5 A) 9.c4 a6 (9...dc4 10.Qd8 Kd8 11.Bc4 a6 12.ba6 Na6= ; 9...Be4 10.Bf3 c5 11.Qc5 Nd7 12.Qd4 Bf3+=) 10.Nc3 dc4 11.Qd8 Kd8 12.Bc4 ab5=; B) 9.Qb2 0-0 (9...a6 10.Nf3 0-0 11.Nd4 Qd7 12.Qa3 Bg6= ; 9...Qd6 10.Nf3 Nd7 11.0-0 Ne5 12.Nd4 0-0=; 9...Nd7 10.Nf3 Nb6 11.0-0 0-0 12.a4 a5+=; 9...c6 10.Nf3 Qb6 11.a4 a6 12.a5 Qc5=) 10.Nf3 a6 11.Nd4 Qd7 12.b6 c5= ; C) 9.Qd2 a6 (9...0-0; 9...Be4; 9...Qd6; 9...b6) 10.Nf3 ab5 11.Bb5 c6 12.Bd3 Bg4=; D) 9.Qc3 c6 (9...0-0 10.Nf3 a6 11.Nd4 ab5 12.Bb5 Bd7= ; 9...Qd7 10.Nf3 a6 11.Na3 ab5 12.Nb5 Nbc6=; 9...a6 10.Nf3 0-0 11.Nd4 ab5 12.Bb5 Bd7=; 9...Qd6) 10.Nf3 a6 11.bc6 Nbc6 12.Qb3 d4=; E) 9.Bh5 Bg6 (9...Ng6 10.c4 dc4 11.Qc4 Qd6 12.Nc3 Nd7+= ; 9...g6 10.Bf3 Qd6 11.Nc3 c6 12.e4 Bd7+=; 9...Kd7 10.Nc3 Kc8 11.Rd1 Bc2 12.Rc1 Bf5+=) 10.Bg6 hg6 11.Nc3 a6 12.Rb1 ab5=.

8.Be2 Nf5 A) 9.Qd1 a6 (9...0-0 10.Nf3 Be6 11.Bd3 Qd6 12.Nc3 Rd8= ; 9...Be6 10.Nh3 g5 11.0-0 a6 12.Nc3 Ne7+=; 9...c6 10.Nf3 Qa5 11.Qd2 Qd2 12.Nbd2 a6=; 9...Qd6 10.Nf3 Be6 11.Nc3 Nd7 12.Bd3 Nb6=) 10.Nc3 d4 11.ed4 Nd4 12.Nf3 Nb5=; B) 9.Qf4 0-0 (9...a6 10.Nf3 0-0 11.Bd3 Nd6 12.Qa4 c5= ; 9...c6 10.Bd3 Nd6 11.bc6 bc6 12.Nf3 Qe7+=; 9...c5 10.Nf3 Qa5 11.Nfd2 0-0 12.Bd3 g6+=; 9...Qe7 10.Nf3 a6 11.Bd3 Nd6 12.Nc3 Be6=) 10.Nc3 Be6 11.Nf3 a6 12.0-0 ab5=; C) 9.Qc3 a6 (9...Nd6 10.Nf3 a6 11.ba6 Na6 12.0-0 Qe7= ; 9...0-0 10.Nf3 a6 11.a4 Nd6 12.Nbd2 Bd7=; 9...d4 10.ed4 Nd4 11.Na3 Qd6 12.Rd1 Qa3+=; 9...c6 10.Nf3 Nd6 11.0-0 Ne4 12.Qb2 Qb6+=) 10.Nf3 0-0 11.a4 Nd6 12.Nbd2 Bd7=; D) 9.Qb4 c6 (9...a5 10.Qd2 d4 11.g4 Nh6 12.Qd4 Qd4=; 9...a6 10.Qa4 0-0 11.Nf3 Nd7 12.ba6 Nb6=; 9...Nd7 10.Nf3 Ne5 11.Nc3 Be6 12.Rd1 c6+=; 9...Qe7 10.Qd2 Be6 11.Nc3 c6 12.Nf3 Nd7=) 10.Nf3 a6 11.Qa3 Qe7 12.bc6 Nc6=; E) 9.Qd2 Nh4 (9...0-0 10.Nc3 Be6 11.Rd1 c6 12.bc6 bc6= ; 9...Be6 10.Nc3 a6 11.Nh3 c6 12.Nf4 Qe7+=; 9...a6 10.Nc3 ab5 11.Qd5 b4 12.Qe4 Qe7=; 9...d4 10.g4 Nd6 11.Qd4 a6 12.Nc3 ab5+=) 10.g3 Ng6 11.Nc3 c6 12.Rb1 0-0=.

8.Ne2 a6 9.c4 (9.ba6 Na6 (9...Nbc6; 9...ba6; 9...b6) 10.Nf4 0-0 11.Ba6 Ra6 12.0-0 c6=; 9.Nf4 c6 (9...ab5; 9...b6; 9...Bf5; 9...0-0) 10.ba6 Na6 11.Be2 Qa5 12.Nc3 Bf5+=; 9.Ng3 c6 (9...Be6 10.ba6 Na6 11.Qb2 Ra7 12.Ba6 ba6=; 9...0-0; 9...b6; 9...ab5) 10.ba6 Na6 11.Nc3 b5 12.Be2 Qa5+=; 9.Nec3 c6 (9...Be6 10.Bd3 ab5 11.Nb5 Nbc6 12.Qc3 Bf5=; 9...0-0 10.Bd3 ab5 11.Nb5 c6 12.N5c3 Re8=; 9...Bf5; 9...b6) 10.ba6 Na6 11.Bd3 c5 12.Bb5 Bd7+=) 9...dc4 10.Qc4 c6 11.ba6 b5 12.Qc1 Na6 =.

8.Ne2 Nf5 A) 9.Qd2 a6 (9...c6 10.Nbc3 Qe7 11.bc6 bc6 12.Rb1 Be6= ; 9...0-0 10.Nbc3 c6 11.Rd1 Qa5 12.Nf4 Re8=) 10.Nbc3 ab5 11.Qd5 c6 12.Qd8 Kd8=; B) 9.Qd1 0-0 (9...c6 10.Nf4 0-0 11.bc6 bc6 12.Bd3 Na6= ; 9...Qd6 10.Nbc3 c6 11.Ng3 Ng3 12.hg3 Qe5=; 9...Qd7 10.Nbc3 c6 11.Ng3 Qe7 12.bc6 Qe5=) 10.Nf4 c6 11.bc6 bc6 12.Bd3 Na6=; C) 9.Qf4 c6 (9...Be6 10.Nbc3 c6 11.e4 de4 12.Qe4 Qe7= ; 9...a6 10.Nec3 d4 11.Bd3 Qd7 12.ed4 Nd4+=; 9...g5 10.Qf3 Be6 11.Nd4 Nd4 12.ed4 Qe7=) 10.Nec3 Qe7 11.Bd3 Qe5 12.bc6 bc6=; D) 9.Qd3 a6 (9...0-0 10.c4 dc4 11.Qc4 Kh8 12.Nbc3 a6= ; 9...c6 10.Nbc3 Ne7 11.Rb1 Nd7 12.bc6 bc6=; 9...Ne7 10.Nbc3 a6 11.Nf4 c6 12.bc6 bc6+=; 9...Qd6 10.Nbc3 c6 11.Rd1 Be6 12.e4 Ne7+=) 10.Nbc3 Ne7 11.Nf4 ab5 12.Nfd5 c6=.

8.e4 0-0 9.Nc3 de4 10.Qc4 Kh8 11.Rd1 Bd7 12.Qe4 Qc8 13.Bd3 (worse is 13.Qe7 Re8 14.Qe2 Re2 15.Nge2 c6–+) 13...Bf5 14.Qh4 (worse is 14.Qe7 Re8 15.Qe8 Qe8 16.Nge2 Bd3 17.Rd3 Nd7–/+) 14...Bd3 15.Rd3 Ng6 16.Qd4 Ne5 17.Rg3 Re8 18.Nge2 Qf5 19.0-0 Nbd7 20.Ne4 (20.f4 Nf7=) 20...b6 (20...a6 21.Rc3 ab5 22.Rc7 Ra4= (22...Ra2? 23.Nd6 Qe6 24.Ne8 Qe8 25.Qd5+-)) 21.f4 Ng6 22.N4c3 Rad8 (22...a6 23.a4+=) 23.Qa4 (23.Rd3 a5+=) 23...Ra8 (23...Qc5!? 24.Kh1 Qe7=) 24.Nd4+= Qc5 25.f5 Nge5 26.Kh1 Nf8 27.Rd1 (27.Nb3!? Qe7 28.Re3=) 27...Nc4+= 28.Qb3?? (28.Nde2+=) 28...Nd2 (better is 28...Qd4! 29.h3 Qf2 30.Rg7 Kg7 31.Qc4 Qc2–+) 29.Qd5 (29.Qf7 Re7 30.Qd5 Rae8+=) 29...Qe7 (29...Ne4 30.Qe4 Re4 31.Ne4+=) 30.h3 (30.Ne6 Ne6 A) 31.Qd2?! Nc5=; B) worse is 31.Qe6 Qe6 32.fe6 Re6+=; C) 31.Rd2?? Nf4 32.Qe4 Qc5 (32...Qe4?! 33.Ne4 Re4 34.h3–+) 33.Qa8 Ra8–+; D) 31.Re3+/–) 30...Rad8–/+ 31.Nc6?? (better is 31.Qd8 Qd8 32.Rd2+=) 31...Rd5 (better is 31...Qe1! 32.Re1 Re1 33.Kh2 Nf1 34.Kg1 Rd5 35.Nd5 Ng3 36.Kf2 Rd1–+) 32.Ne7+= Rdd8 33.Nc6 (33.Re3 Nc4 34.Rd8 Rd8+/–) 33...Rd6 (better is 33...Ne4!? 34.Rf3 Rd1 35.Nd1 Nd6=) 34.Rd3+/– (worse is 34.Na7 Ne4 35.Rf3 Rd1 36.Nd1 Ra8=) 34...Nc4 35.Rd6 (35.Na7 g6+/–) 35...Nd6 36.Rf1 (36.g4!?+/–) 36...Nd7= 37.Na7 Re5 38.Nc6 Rc5= 39.Rf3 Nb5 40.Nb5+= Rc6 41.Rd3 Nf8 42.Rd8 Kg8 43.Nd4 Rd6 44.Rd6 cd6 45.a4 Nd7= 46.Nb3 Kf7 47.g4 d5 48.a5 ba5 49.Na5 Ke7 50.Nc6 Kd6 51.Nd4 Ke5 52.Nc6 Kf4 53.Kg2 Ne5 54.Nd4 g6 55.Ne6 Ke3 56.Kg3 gf5–/+ 57.gf5 Ke4 58.Ng7 Nc4 59.Kf2 Ne3 60.Nh5 Nc2 ½–½. tschulz – SurfPete, mySchach.de, 2004.

8.Nf3 0-0 A) 9.Bd3 a6 (9...Bf5 10.Nc3 c6 11.0-0 Qd6 12.Bf5 Nf5+= ; 9...Re8 10.c4 Be6 11.Nc3 a6 12.Qh4 h6+=; 9...c6 10.c4 Bf5 11.Bf5 Nf5 12.Qd3 Qa5+=; 9...Be6 10.0-0 a6 11.c4 ab5 12.cb5 Qd6+=) 10.c4 ab5 11.cb5 Bf5 12.Bf5 Nf5= ; B) 9.Be2 Nf5 (9...a6 10.c4 ab5 11.cb5 Be6 12.0-0 Qd6= ; 9...Be6 10.0-0 a6 11.c4 Nf5 12.Qc3 ab5=; 9...Qd6 10.0-0 a6 11.c4 ab5 12.cb5 Be6=) 10.Qd2 a6 11.Nc3 Be6 12.Bd3 ab5=; C) 9.c4 c6 (9...Be6 10.Bd3 Kh8 11.cd5 Bd5 12.e4 Be6=; 9...a6 10.cd5 ab5 11.Bb5 Nd5 12.Nc3 Nc3+=; 9...Qd6 10.cd5 Nd5 11.Bc4 Be6 12.Nc3 Nc3+/– 1.12) 10.cd5 Nd5 11.Bc4 Be6 12.Nc3 Qa5=.

8.Nf3 a6 9.Qa4 (9.Nc3 0-0 (9...ab5 10.Bb5 c6 11.Bd3 Nf5 12.Qg4 g6=; 9...Be6 10.Qa4 Nc8 11.ba6 c6 12.Rb1 b6+=; 9...c6 10.bc6 Nbc6 11.Qd2 b5 12.Be2 Be6=; 9...b6 10.Qa4 0-0 11.Bd3 Nd7 12.Qh4 f5=) 10.Rd1 ab5 11.Bb5 c6 12.Be2 Qa5= ; 9.Bd3 ab5 (9...Qd7 10.b6 Nbc6 11.Qc5 Qd8 12.bc7 Qc7=; 9...Bf5 10.Nc3 Bd3 11.Qd3 Nd7 12.ba6 ba6=; 9...0-0 10.c4 ab5 11.cb5 Bf5 12.Bf5 Nf5=) 10.Bb5 Nbc6 11.Nc3 Qd6 12.Rd1 Bd7=; 9.Be2 ab5 (9...0-0 10.c4 ab5 11.cb5 Be6 12.Nc3 Qd6=; 9...Qd6 10.Nc3 Bf5 11.Qd2 ab5 12.Nb5 Qd7=; 9...Bf5 10.Qa4 Nd7 11.ba6 0-0 12.Qf4 ba6=; 9...Qd7 10.ba6 b6 11.0-0 Ba6 12.Ba6 Ra6=) 10.Bb5 Nbc6 11.Nc3 Qd6 12.Rd1 Bd7= ; 9.ba6 Na6 10.Bd3 c5 11.Qb2 c4 12.Be2 Qa5=) 9...Qd6 (9...0-0 10.Bd3 Nd7 11.Qh4 h6 12.ba6 b6=; 9...Qd7 10.c4 0-0 11.Nc3 c6 12.cd5 cd5+/–; 9...Bd7 10.Nc3 0-0 11.Rd1 Be6 12.Bd3 Qd6+=; 9...Bf5 10.Nd4 Qd7 11.c4 Be4 12.Nc3 c5+=) 10.Bd3 Nd7 11.ba6 ba6 12.Nbd2 Rb8 =.

8.Nf3 Bf5 A) 9.Bd3 a6 (9...Qd7 10.Nc3 a6 11.Qa4 0-0 12.0-0 c5+=; 9...Bd3 10.cd3 a6 11.ba6 Na6 12.0-0 0-0=) 10.Nc3 Bd3 11.Qd3 Nd7 12.0-0 ab5=; B) 9.c4 dc4 (9...Be4 10.Nc3 Bf3 11.gf3 c6 12.cd5 cd5+= ; 9...c6 10.Nc3 Qa5 11.Rc1 Nd7 12.cd5 Nd5=; 9...a6 10.Nc3 dc4 11.Bc4 c6 12.Qd8 Kd8 13.Rd1=; 9...Be6 10.cd5 Nd5 11.Bc4 c6 12.Qe4 Qe7+=) 10.Bc4 a6 11.Nc3 c6 12.Qd8 Kd8 13.Rd1=.

8.Nf3 Nf5 9.Qf4 (9.Qd2; 9.Qd1; 9.Qc3; 9.Qb4) 9...g5 (9...a6 10.Bd3 Nd6 11.Qa4 0-0 12.Nc3 Be6+=; 9...Nd6 10.Nc3 c6 11.Qa4 0-0 12.Bd3 f5+=) 10.Qb4 Qe7 11.Qe7 Ne7 12.c4 c5 =.

8.Qf4 c5 9.Nd2 (9.Nc3 0-0 (9...a6 10.Qa4 0-0 11.Rd1 Be6 12.Nf3 Nd7=; 9...Qa5; 9...Be6; 9...Nd7) 10.0-0-0 Be6 11.Bc4 Qa5 12.Nd5 Nd5+=) 9...a6 (9...Ng6 10.Qa4 Bf5 11.Ngf3 Nd7 12.Be2 0-0=; 9...Be6 10.Ngf3 0-0 11.Bd3 a6 12.Qh4 Bf5=) 10.Ngf3 c4 11.Nd4 ab5 12.Nb5 0-0 =.

8.Qf4 c6 A) 9.Nd2 Ng6 (9...Qa5 10.bc6 Nbc6 11.Bd3 Qc3 12.Rb1 Qa3=; 9...Bf5; 9...a6; 9...0-0) 10.Qg3 0-0 11.Bd3 Ne5 12.Ngf3 Nd3=; B) 9.bc6 Nbc6 (9...Qa5 10.Nd2 Nbc6 11.Bd3 Qc3 12.Rb1 Qa3=; 9...Nec6 10.Bd3 Qb6 11.Nd2 Qb2 12.Rb1 Qa2=) 10.Nd2 Ng6 11.Qa4 d4 12.ed4 Qd4=.

8.Qf4 Nd7 A) 9.Nf3 Ng6 (9...Nc5 10.Nc3 c6 11.Qd4 Qd6 12.Be2 Bf5=; 9...a6 10.ba6 b6 11.Nc3 Nc5 12.Nb5 Ne6=) 10.Qg3 Nc5 11.Nbd2 0-0 12.Be2 f5=; B) 9.Nc3 Ne5 (9...Nc5; 9...0-0; 9...c6; 9...Ng6) 10.Nf3 Qd6 11.Be2 Bf5 12.Qa4 Nf3=; C) 9.Be2 Nc5 (9...Ng6 10.Qd4 Nde5 11.Nc3 c6 12.f4 Nf7=; 9...Ne5 10.Nf3 N7g6 11.Qg3 Qd6 12.Nbd2 Qc5=) 10.Nc3 Bf5 11.Bh5 g6 12.Bf3 c6=; D) 9.Bd3 Nc5 (9...Ne5 10.Nf3 N7g6 11.Qg3 Nf3 12.Qf3 Ne5=) 10.Nf3 a6 11.ba6 b6 12.Nc3 Ba6=.

8.Qf4 Ng6 A) 9.Qg3 Bf5 (9...Nd7) 10.c4 d4 11.Nd2 de3 12.Qe3 Kf7+=; B) 9.Qd4 c6 (9...Be6 10.Nf3 a6 11.Nc3 c6 12.ba6 Na6=; 9...Ne5 10.Nc3 Be6 11.0-0-0 c6 12.e4 a6+=; 9...a6 10.Nc3 Ne7 11.Rd1 ab5 12.Bb5 c6=; 9...Bf5 10.Nc3 c6 11.bc6 bc6 12.Bd3 Bd3=) 10.Nc3 Be6 11.Nf3 a6 12.ba6 Na6=.

5.d4 Bd6

6.de5 Bc5 7.Bd3+/– Nd7 8.Qh5 Kf8? (better is 8...Ke7+-) 9.e6 Nb6 (9...Ne5 10.Be5 g6+-) 10.Qf7 1–0. pcmvr (2735) – dmendiola (2270), net–chess.com, 2006.

6.de5 fe5!? 7.Be5 Nf6+=.

6.de5+= Be5 7.Be5+/– fe5 8.Qh5 Kd7 9.Qe5 Nf6 10.g3 c6?? 11.Bh3 (11.Bh3 Ng4 12.Bg4) 1–0. PawnPower – kess, Kess, 2006.

5.Nf3 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 (8...Bd6 9.c4=) 9.c4 (better is 9.Ne5!? Ne7 10.Nd3+/–) 9...Ne7 10.Be2 (10.d4 Bb4 11.Bc3 Bc3 12.Nc3 Bg4=) 10...0-0 (10...Be6 11.cd5 Bd5 12.d4 Bb4 13.Bc3 Bc3 14.Nc3=) 11.0-0 Be6 (11...e4 12.Nd4=) 12.d4+= ed4 13.ed4 Bd6 +=. Karpoff – Hasler,Ulrich, corr ICCF TT–4–90, 1990.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Qd7 (8...Bd6 9.d4 e4 10.Nfd2=) 9.c4 (9.d4 ed4 10.Bd4 Bb4 11.c3 Bd6+=) 9...dc4= 10.Bc4 c6 (10...Qg4!? 11.d3 Qg6=) 11.Qb3 Nh6 12.d4 ed4 13.Nd4 Bd4 14.Bd4 Qe7 15.0-0 Nf5 16.Bb2 Nd6 17.Be2 (better is 17.Ba3!? Nd7 18.bc6 bc6 19.Rd1+-) 17...Qf7 18.Qc3 0-0 19.Bf3 (better is 19.Ba3 Ne4 20.Qc2+/–) 19...cb5?? (19...Nb5 20.Qd2+=) 20.Nd2?? (better is 20.Ba3 Nc4 21.Bf8 Qf8 22.Bd5 Kh8 23.Nd2+-) 20...Bf5 (20...Nc4 21.Rc1=) 21.e4 Be6 22.e5 Rc8 23.Qd4 Nf5 24.Qf4 Nc6 (better is 24...Nd7!? 25.ef6 Rc2=) 25.ef6+/– gf6 (25...Rd8 26.fg7 Ng7 27.Qe3+=) 26.Qg4 (26.Ne4!? Ne5 27.Be5 fe5 28.Qe5+-) 26...Qg7 27.Qf4 Nce7 28.Ne4 Exerts pressure on the isolated pawn 28...Rc4? 29.Nf6 Kh8?? 30.Qb8 Rc8 31.Qb7 h5?? 32.Bh5 Rf8 33.Rb1 Rf6+/– 34.Bf6 Qf6 35.Qb8 Kg7 36.Qb5 Qh6 37.Bf3 Qg6 38.Qb2 Kf7 39.Qe2 Nh4?? 40.Be4 Bf5 41.g3?? Be4–+ 42.Rb4?? Nf3 43.Kf1 Qh5 44.Qe4 Qh3 45.Ke2+- (45.Ke2 Ng1 46.Kd2+-) 1–0. ATUK – tambor17, Live Game Caissa's Web, 2005.

6.a4 Bd7 7.c4 ab5 8.ab5 Ra1 9.Ba1 c6 (9...Bg4 10.cd5 Qd5 11.Nc3=) 10.bc6 bc6 (worse is 10...Nc6 11.cd5 Nb4 12.d4 ed4 13.Nd4+/–; 10...Bc6?! 11.cd5 Qd5 12.Nc3=) 11.cd5 cd5 12.Be2 (12.d4 ed4 13.Bd4 Qa5 14.Bc3 Bb4+=) 12...Ne7 13.0-0 Nbc6 14.Nc3 0-0 15.Qb3 Be6 Black plans d4 16.Qb5 (16.d4 ed4 17.Na4 Bd6 18.Bd4 Qb8=) 16...Qd6 17.Rd1 d4?? (17...Ra8 18.Qb3 Qd7 19.d4 ed4 20.Na4 Ra4 21.Qa4 de3 22.fe3 Be3 23.Kh1+=) 18.ed4?? (18.Ne4 Qd5 19.Nc5+- (19.Qc5?! Qe4 20.d3 Qg6+=)) 18...ed4?? (18...Nd4 19.Nd4 Qd4+= (19...ed4? 20.Ne4 Qe5 21.Nc5+-)) 19.Ne4+/– Na7?? (better is 19...Qd5 20.Nc5 Rb8+/–) 20.Qc5+- Qc5 21.Nc5 Bf5 (21...Bd5 22.Bd4 Nac6 23.Be3+-) 22.Nd4 Rc8 23.Nf5 Nf5 24.Nb3 (24.Bc4 Kf8 25.d4 Nd6+-) 24...Re8 25.Bg4 Nd6 26.Kf1 Nab5 27.Bd7 Rb8 28.Bb5 (28.Nc5 Kf8+-) 28...Nb5 29.Nd4 Nd6 30.Bc3 Re8 31.Re1 Re1 32.Ke1 Kf7 33.f3 g6 34.Ke2 g5 35.g4 Kg6 36.h3 Ne8 37.Nf5 Ng7 38.Ng7 Kg7 39.d4 Kf7 40.Ke3 Ke6 41.Ke4 h6 (41...Kd6 42.Bb4 Kd7 43.Kf5+-) 42.d5 Kf7 43.Kf5 Ke7 44.Bf6 (better is 44.Bb4 Kd7+-) 44...Kd6 45.Ke4 Kd7 If Black now only could play Bxg5... 46.Ke5 Ke8 47.Ke6 Kf8 48.d6 Ke8 49.d7 Kf8 50.d8Q 1–0. Hal1958 – Djusta, playchess.de, 2005.

5.Nf3 Bb6

6.a4 a5 7.c4 Be6 8.cd5 Qd5 9.Nc3 Qd7 10.Be2 Ne7 11.0-0 (11.d4 ed4 12.Nd4 Bd4 13.Qd4 Qd4 14.ed4 Nd7+=) 11...0-0 (11...Nf5 12.Ne4=) 12.Rc1 Nd5 (12...Nf5 13.Ne4=) 13.Nd5 Qd5 14.Bc4 Nd7 1–0. GuestBFQC – rbpl, freechess.org, 2017.

6.c4 c6 7.cd5 cd5 8.Be2 Ne7 9.a4 0-0 10.0-0 Be6 11.d4 e4 12.Nfd2 Qd6 (12...Nd7 13.Nc3=) 13.Ba3+= Qd7 14.f3 (14.Nb3 Re8+=) 14...ef3 (14...Nf5 15.Qb3 (15.fe4? Ne3 16.Qc1 Nf1 17.Kf1 de4–+; 15.Bf8 Ne3 16.Qc1 Nf1–/+) 15...Rc8 16.Ra2= (16.fe4? Nd4 17.ed4 Bd4 18.Kh1 Ba1–+)) 15.Bf3 (15.Nf3 Bf5+=) 15...Re8 (better is 15...Nf5 16.Qb3 Rc8=) 16.h3?? (better is 16.Be7 Qe7 17.Nc3+=) 16...Nf5–+ 17.Bg4?? (better is 17.Qe1 Nd4! 18.Bd1–+) 17...Ne3 18.Be6 (18.Qb3 Bg4 19.hg4 Bd4–+) 18...Re6 (better is 18...Qe6 19.Qe2 Bd4 20.Nb3 Ba1 21.Re1–+) 19.Qf3 Nf1 20.Qf1 (20.Kf1 Bd4 21.Ra2–+) 20...Bd4 21.Kh1 Ba1 0–1. GuestYRDG – rbpl, freechess.org, 2017.

5.Nf3 Ne7

6.c4 Be6 7.cd5 Nd5 8.Be2 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nd7 13.d4 ed4 14.Bd4 Qe7 15.Bc5 Qc5 16.Nd4 Bf7 17.Bf3 Ne5 18.Qc1 Nf3 19.Nf3 Qb5 20.Nd4 (20.e4!? Nb4 21.Qc7=) 20...Qb6 21.Nd2 c5 22.Ne2 Qc6 23.Ne4 Rc8 24.N4c3 b5 25.Nd5 Bd5 26.f3 b4 Black prepares c4 27.e4 Bf7 28.Rd1 c4 29.Nd4 Qc5 30.Kf1 c3 31.Nf5 (31.Ne2–+) 31...Bc4 (31...Bc4 32.Rd3 Bd3 33.Ke1 Qg1) 0–1. Hal1958 – Emerson (1765), playchess.de, 2006.

6.c4 Bg4 7.cd5 Nd5 8.Qc2 Bb6 (8...Nd7 9.Be2=) 9.Bc4 (9.Qe4 Be6=) 9...Bf3 10.gf3 a6 (10...c6!?=) 11.Qe4+= c6 (11...Ne7 12.Qb7 Nd7 13.Qe4+/– (13.ba6?? Nc5–+)) 12.bc6+/– bc6 13.Nc3 (13.f4 Ra7+/–) 13...Nb4 (better is 13...Nc3!? 14.dc3 Qe7=) 14.a3+/– Nd5 15.Nd5 f5?? (better is 15...cd5 16.Bd5 Ra7+/–) 16.Qe5+- Kf8 17.Qg7 1–0. DEFFM – GuestMRBP, freechess.org, 2017.

6.Be2 Be6 7.0-0 Nc8 8.d4 ed4 9.Bd4 (9.Nd4 Bf7+=) 9...Bd4 10.Nd4 Bf7 11.c4 (11.Nc3 0-0+/–) 11...dc4+= 12.Qa4 (12.Qc2 Nd6+=) 12...0-0 (12...Nb6 13.Qc2=) 13.Nd2 c4 becomes the focus of attention (13.Bc4 Nb6 14.Bf7 Rf7+=) 13...Nd7 (13...c5!? 14.N4f3 Nb6=) 14.Bc4 Nd6 15.Rfd1 Nc4 16.Nc4 Nc5 (16...a6 17.Rac1+=) 17.Qb4 b6 (17...Qd5 18.Rac1+=) 18.Nb2 (18.Ne6 Be6 19.Rd8 Rad8+/–) 18...h6 (18...Qe8 19.Na4 Na4 20.Qa4+=) 19.Nc6 (19.Ne6 Be6 20.Rd8 Rad8+/–) 19...Qe8 20.Nd3 Nd3 21.Rd3 a5 (21...a6 22.Qf4 ab5 23.Qc7 Qe4+/–) 22.Qf4+/– Rc8 23.Na7 (23.a4!?+/–) 23...Rd8+= 24.Rd8 Qd8 25.Nc6 Qd2 26.Ne7 (26.a4 Qd6+/–) 26...Kh8 (26...Kh7 27.a4+=) 27.a4 (27.Qc7 Qb2 28.Rc1 Qb5 29.a3+=) 27...Re8 (27...Rd8!? 28.Qg4 Qd7 29.Qd7 Rd7=) 28.Qc7+/– Bb3? (28...Qd8 29.Qd8 Rd8 30.Kf1+/–) 29.Ng6 (better is 29.Nf5 Rg8 30.Nd4 Ba4 31.h3+-) 29...Kh7+/– 30.Nf4 (better is 30.Nh4 Qb2 31.Re1+/–) 30...Ba4?? (better is 30...Qb2 31.Re1 Ba4 32.Qb6 Qb5=) 31.Qc6 (31.Nh5 Rg8 32.Nf6 Kh8 33.Ng8 Bd1+-) 31...Rd8?? (31...Qb2!? 32.Re1 Qb5–/+) 32.g3 (32.Qe4 f5 33.Qf5 Kh8 34.Ng6 Kg8 35.Ne7 Kh8+/–) 32...Qb2?? The isolani on b5 becomes a target (better is 32...Bd1=) 33.Qe4 (33.Ra4 Qb1 34.Kg2 Rd1+-) 33...Kg8 (33...Kh8 34.Ng6 Kg8 35.Qa4+-) 34.Qe6 (better is 34.Qa4!? f5+-) 34...Kh8 35.Ng6 (better is 35.Ra4 Qb5 36.Ra1+-) 35...Kh7+/– 36.Nf8 (36.Ra4!? Kg6 37.Qb6 Rd1 38.Kg2+/–) 36...Rf8= 37.Qe4 (37.Qf5!? Kh8 38.Ra4=) 37...g6 (37...f5!? 38.Qa4 Rc8–/+) 38.Qa4+= Rc8 39.Qd4 (better is 39.Rd1 Rc1 40.Rc1 Qc1 41.Kg2=) 39...Rc2?? (better is 39...Qd4 40.ed4 Rc4+=) 40.Qd7+/– Kg8 41.Qe8 Kg7 42.Qe7 Kg8 43.Qe8 Kg7 44.Qe7 Kh8?? 45.Qf8 Kh7 46.Qf7 Kh8 47.Qf8 Kh7+/– 48.Qf7 Kh8 49.Qf8 ½–½. gtate (1940) – roadrunner (2090), net–chess.com, 2004.

6.d4 ed4

7.Bd4 Bd4 8.Nd4 c5 9.bc6=.

7.Bd4 Qd6 8.Bc5 Qc5 9.Bd3 (9.Nd4 a6 10.Qh5 g6 11.Qd1 0-0 12.c4 ab5 13.cb5 Nf5=) 9...a6 10.Nd4 ab5 11.Nb5 0-0 12.0-0 Nd7 13.Qh5 g6=.

7.Bd4 Qd6 8.Nbd2 A) 8...0-0 9.Bc5 (9.Bd3 a6 10.a4 Bd4 11.Nd4 ab5 12.Nb5 Qc6 13.0-0 b6=) 9...Qc5 10.c4 a6 11.Rc1 Qd6 12.Qa4 Be6 13.Bd3 Qd7+=; B) 8...a6 9.c4 (9.a4 0-0 10.Bd3 Bd4 11.Nd4 ab5 12.Nb5 Qc6 13.0-0 b6=) 9...0-0 10.Bc5 Qc5 11.Rc1 Qd6 12.Qa4 Be6 13.Bd3 Qd7+=; C) 8...Bg4 9.Be2 (9.Bc5 Qc5 10.c4 a6 11.ba6 Na6 12.cd5 Bf3 13.Nf3 Nb4=) 9...a6 10.0-0 ab5 11.Bb5 Nbc6 12.h3 Bf3 13.Nf3 0-0=.

7.Bd4 Qd6 8.Bd3 A) 8...Bg4 9.Bc5 (9.0-0 Nd7 10.Nbd2 Ne5 11.Be2 Bd4 12.ed4 Nf3 13.Bf3 Bf3=) 9...Qc5 10.h3 Qb4 11.Nbd2 Bf3 12.Qf3 Qc3 13.Rd1 a6+=; B) 8...0-0 9.0-0 (9.Bc5 Qc5 10.Nd4 a6 11.Qh5 g6 12.Qe2 ab5 13.Nb5 Nbc6=) 9...a6 10.c4 Bg4 11.Bc5 Qc5 12.Nbd2 f5 13.Rb1 Qa3+=; C) 8...a6 9.Nc3 (9.Bc5 Qc5 10.Nd4 ab5 11.Nb5 Nd7 12.0-0 Ne5 13.Nd4 Bg4=) 9...Bg4 10.Rb1 Bd4 11.ed4 ab5 12.Nb5 Qc6 13.0-0 0-0=.

7.Bd4 Qd6 8.Be2 0-0 (8...a6 9.Nc3 (9.0-0 ab5 10.Bb5 Nbc6 11.c4 0-0 12.Bc6 Qc6 13.cd5 Nd5=) 9...ab5 10.Nb5 Qb6 11.0-0 0-0 12.Bc5 Qc5 13.Nfd4 Qb6=; 8...Bf5 9.Nc3 (9.0-0 Nd7 10.Nbd2 0-0 11.Nb3 Bb4 12.a4 Qe6 13.Nh4 Be4=) 9...Nd7 10.0-0 0-0-0 11.a4 Ne5 12.a5 Bb4 13.Qb1 Bc3+=) 9.0-0 (9.Nc3 Bf5 10.0-0 Nd7 11.Qd2 Bb4 12.Rfd1 c5 13.bc6 bc6=) 9...c6 (9...a6 10.c4 ab5 11.cb5 Bg4 12.Bc5 Qc5 13.Nbd2 Nd7=) 10.c4 (10.Nc3 Bb4 11.bc6 bc6 12.Rb1 Ba6 13.Ba6 Na6=) 10...Bb6 (10...Bd4 11.Qd4 c5 12.Qd2 Be6 13.Nc3 Rd8+=) 11.Bb2 (11.Bb6 ab6 12.cd5 Qd5+= (12...Nd5? 13.e4+-) 13.Nc3 Qd1+=) 11...Bg4 (11...Rd8 12.Nbd2 Be6 13.a4 Nd7=) 12.Nbd2 (12.cd5 cb5 13.Bb5 Qd5+=) 12...Nd7 (12...Rd8 13.Bd3 Be6+=) 13.bc6 (13.cd5 Nd5+=) 13...bc6 (worse is 13...Nc6 14.cd5 Ne7 15.e4 Bf3 16.Nf3+/– (worse is 16.gf3 Bc7 17.f4 Qf4–/+)) 14.cd5 cd5 (14...Qd5?? 15.Bc4+-) 15.Nc4 Qb4?? (better is 15...Qc7 16.Nb6 ab6+=) 16.Ba3+- (16.Nb6?! ab6 17.Bd4 Ra3=) 16...Bf3 (16...Qb5 17.Nb6 Qb6 18.Be7 Rfe8 19.Qd5 Be6+-) 17.Bb4 (17.Bb4 Be2 18.Qe2+- (18.Be7?! Bd1 19.Nb6 ab6 20.Bf8 Be2+/–)) 1–0. pzn2pawn (1825) – blunt hedgehog (1675), redhotpawn.com, 2016.

7.Nd4 0-0 8.Bd3 Bd4 (8...a6 9.c4=) 9.Bd4+= Bf5 10.Bc5 Bd3 11.Qd3 c6 12.c4 Nd7 13.Be7 Qe7 14.cd5 Qb4 15.Nc3 cb5 16.Rb1 Ne5 17.Qd4 (17.Rb4? Nd3 18.Kd2 Nb4–+) 17...Qd4 18.ed4 Nc4 19.Rb5 Rac8 20.Rc5 (20.Ke2 Rfe8 21.Kd3 b6+/–) 20...b6 21.Rc6 Rfd8 (21...Na5 22.Rc8 Rc8 23.Kd2+=) 22.0-0 (22.Ke2 Na5 23.Rc8 Rc8+/–) 22...Na5+= 23.Rc8 Rc8 24.Nb5 a6 25.Nd6 Rd8 26.Nf5 Kf7 (26...Nc4+=) 27.Re1 (better is 27.Rc1!? Kg6 28.Ne7 Kg5 29.Rc7+/–) 27...Rd5+= 28.g4 g6 29.Re7 Kf8 30.Ne3 Rd4 31.Rh7 (31.Re6!? Nc4 32.Nc4 Rg4 33.Kf1 Rc4 34.Rf6 Ke7 35.Rb6+=) 31...Nc4–/+ 32.Kf1 Ne3 33.fe3 Rg4 34.Rb7 b5 (34...Rb4!?–/+) 35.Rb6+= Ra4 (35...Ke7 36.Ra6 Rc4 37.Ra7 Kd6 38.Ra6 Rc6 39.Rc6 Kc6 40.Ke2+=) 36.Rf6 Kg7 (36...Ke7 37.Rf2+=) 37.Rf2= Ra3 38.Re2 Kf6 39.Kf2 b4 (39...Kf5 40.Kf3+=) 40.Kf3= Kf5 41.h3 (41.h4 a5+=) 41...a5 42.Rc2 Rc3 43.Rd2 Ke5 44.h4 a4 (44...Ra3 45.Rg2+=) 45.Rd4= Ra3 46.Rb4 Ra2 47.Rb5 Kf6 48.Ke4 (better is 48.Ra5!?=) 48...Rh2–/+ 49.Rb6 Kg7 50.Rb7 Kh6 51.Ke5 (51.Kd5 Rh4 52.Ra7 Rb4–/+) 51...Rh4 52.Ra7 Rb4 53.e4 Kg5 54.Ra6 ½–½. Mezheritsky,Yuri (2090) – Ignatchuk,Viktor, Kiev Independence Cup op, 1998. (=1.Nf3 d5 2.b4 f6 3.Bb2 e5 4.b5 Bc5 5.e3 Ne7)

5.Nf3 Bg4

6.Be2 Ne7 7.d4 Bb4 8.c3 Bd6 9.de5=.

6.Be2 Ne7 7.h3 Bh5 8.0-0 0-0 (8...Bd6 9.Nc3=) 9.c4 (9.d4 ed4 10.Bd4 Bd4 11.Qd4 a6=) 9...dc4 (9...Bf3 10.Bf3 e4 11.Be2=) 10.Qc2= Bf7 (10...Bd6 11.Ng5 fg5 12.Bh5=) 11.Bc4 Bc4 12.Qc4 1–0. DEFFM – GuestHCST, freechess.org, 2016.

5.Qh5 g6

6.Qd1 Bb6 7.a4 a5 (7...Ne7 8.Nf3=) 8.c4 (8.d4 ed4 9.Bd4 Bd4 10.Qd4 Bf5+=) 8...Be6 (8...d4 9.Bd3=) 9.cd5 Bd5 10.Nc3 Ne7 11.Nd5 Qd5 12.Nf3 Nd7 13.Qc2 (13.d4 ed4 14.Nd4 Rd8+=) 13...0-0-0 (13...e4!? 14.Bc4 Qf5=) 14.Bc4+/– Qd6 15.0-0 g5 (15...Nd5 16.d4+/–) 16.Ba3 (16.d4 ed4 17.Nd4 Bd4 18.Bd4 Ng6+-) 16...Bc5 17.Bb2 (17.Bc5 Qc5 18.d4 Qb6+/–) 17...g4 (17...Bb6!?=) 18.Nh4+= Nb6 19.Bb3 Qd2? (better is 19...Nbd5+/–) 20.Nf5?? (better is 20.Be6 Kb8 21.Qc5+-) 20...Qc2–/+ 21.Ne7 Be7 22.Bc2 Rd2 (better is 22...Kb8 23.Bc3 Nc4+=) 23.Bf5+= Kb8 24.Bc3 Rd5 25.Bg4 (better is 25.Ba5 h5 26.Bb6 cb6 27.Bg6+/–) 25...Rg8? (better is 25...Bb4 26.Bb4 ab4+/–) 26.Be6+- Rc5 (26...Rgd8 27.Bd5 Rd5 28.Ba5+-) 27.Bg8 Rc3 28.Bh7 Rc4 29.Rfd1 Na4 (29...Ra4 30.Ra4 Na4 31.h4+/–) 30.Rd7 Bd6? (30...Ba3 31.h4 Bb2 32.Ra2 Rc1 33.Kh2+-) 31.Rf7 (better is 31.b6 Nb6 32.Rd8 Nc8 33.Bf5+-) 31...e4 32.h4 (better is 32.f4 Ka7 33.Rf6+-) 32...Be5+/– 33.Rd1 Nc3 (33...Ka7 34.h5 Nc3 35.Rd8+=) 34.Rd8 (34.b6!? cb6 35.Rdd7+-) 34...Ka7+= 35.g3 (35.h5!?+=) 35...a4= 36.Rff8 Nb5 37.Ra8 (37.f4 Bb2=) 37...Kb6 38.Rfe8 (38.h5 a3 39.Bg8 Rc3+/–) 38...a3 (38...c6 39.Bg8 Rb4 40.h5+/–) 39.Re6 (better is 39.Bg8!? Rc1 40.Kg2=) 39...c6–/+ 40.Bg8 Rc1 (40...Na7!? 41.Re5 Rc1 42.Kg2 fe5=) 41.Kg2+= Na7 42.h5?? (better is 42.Ree8 Nb5 43.Ra4+=) 42...a2–+ 43.Rc6 Rc6 (43...Nc6!? 44.Ra2 Nb4 45.Ra8–+) 44.Ba2–/+ f5 45.Bd5 (45.Rf8 Bf6–/+) 45...Rh6 (45...Rh6 46.Re8 Bf6–/+) 0–1. GuestXYFF – rbpl, freechess.org, 2017.

6.Qd1 Be6 7.d4 Bb4 8.Nd2=.

6.Qd1 Ne7 7.d4 ed4 8.ed4 Bd6 9.Nf3 (9.c4 Bf5=) 9...Bg4 (9...a6 10.Bd3=) 10.Be2 (10.Bd3 a6=) 10...0-0 (10...a6 11.ba6 Na6 12.0-0=) 11.h3 (11.0-0 c6=) 11...Bd7 (11...Bf3 12.Bf3 Qd7 13.Nc3=) 12.0-0 (12.Ba3 Bf5=) 12...a6 13.a4 ab5 (13...Re8 14.Ba3=) 14.ab5 Ra1 15.Ba1 Qe8 (15...Re8 16.Re1=) 16.c4+= dc4 17.Bc4 Kg7 18.Nc3 Nf5 (18...Bf5 19.Re1+=) 19.Re1 Qd8 20.d5 c6? (20...Bc8 21.g4 Nh6 22.g5+/–) 21.Ne4?? (21.dc6 bc6 22.g4 cb5 23.Bf1+-) 21...Bb4 (21...cb5 22.Nd6 Nd6 23.Bd3+=) 22.Re2 (22.dc6!? bc6 23.bc6 Be1 24.cd7 Bf2 25.Nf2 Qd7 26.Qe1+/–) 22...cb5+= 23.Bb3 Na6 (23...h6 24.Nd4+=) 24.Nfg5 (24.g4 Nd6 25.Nf6 Rf6 26.g5+-) 24...Nc5+= 25.Nf6 (better is 25.Qc2 Ne4 26.Qe4+=) 25...Rf6–/+ 26.Bc2 h6 0–1. GuestTCYY – GuestQTVH, freechess.org, 2016.

6.Qd1 Ne7 7.Nf3 0-0 8.Be2 (8.d4 Bb4 9.c3 Bd6=) 8...a6 9.a4 (9.d4 ed4 10.Bd4 Bd4 11.Nd4 ab5 12.Nb5 c6=) 9...ab5 (9...Be6 10.ba6 Na6 11.0-0+=) 10.ab5 Ra1 11.Ba1 c6 (11...Bd6 12.0-0=) 12.c4 (12.0-0 Bd6=) 12...cb5 (12...Be6 13.cd5 Bd5 14.d4 ed4 15.Bd4 Bd4 16.Qd4 Bf3 17.Qd8 (17.gf3? Qd4 18.ed4 Rd8–+) 17...Rd8 18.Bf3 cb5 19.Bb7+=) 13.cb5= Qa5 (13...Bd6 14.Nc3=) 14.Nc3 (14.Bc3 Bb4+=) 14...Bd7 Exerts pressure on the isolated pawn (14...Be6 15.0-0=) 15.0-0 Rc8 16.Qb3 Be6 (16...Qa3 17.Qb1=) 17.Bb2 (better is 17.Ne4! Nd7 A) 18.Nc5?! Nc5 (worse is 18...Rc5 19.d4 ed4 20.Bd4+/–) 19.Qb2 Bf5+=; B) 18.d4 ed4 19.Nd4+/–) 17...Qb4= 18.Qa2 (18.Qb4 Bb4 19.Ra1 Kf7=) 18...Kf7 (better is 18...Nd7=) 19.Rb1?? (better is 19.Qa1=) 19...Qg4?? (better is 19...d4 20.Qa1 dc3 21.Bc3 Qa3–+) 20.Ne5!+- (20.Ne5 fe5 21.Bg4 Bg4 22.Nd5+-) 1–0. GuestHYVZ – GuestTZDV, freechess.org, 2016.

6.Qd1 Ne7 7.Nf3 Bf5 8.d4 Bb4 9.c3+=.

6.Qd1 Ne7 7.Nf3 Bg4 8.Be2= Nd7 9.0-0 e4 10.Nd4 Be2 11.Qe2 Nf8? (better 11...Bd4!? 12.ed4 0-0=) 12.f3+/- Qd7? (better 12...Bd4!? 13.ed4 f5+/-) 13.fe4+- de4 (13...Ne6 14.Ne6 Qe6 15.Nc3+-) 14.Rf6 (better 14.Nb3 Ne6 15.Rf6 Rf8 16.Rf8 Kf8+-) 14...0-0-0 (14...Nd5 15.Rf2 0-0-0+-) 15.Nb3 Bb6 (15...b6 16.Nc5 bc5 17.b6 cb6 18.Qa6 Qb7 19.Qb7 Kb7 20.Rf7+-) 16.Rb6! ab6 (16...ab6 17.Bh8 Discovered attack; 16...cb6 17.Qc4 Double attack (17.Bh8 Discovered attack)) 17.Bh8 Ne6 (17...Nf5 18.Nc3 Qe7 19.Qg4+-) 18.Bb2 Nf5 (18...Nd5 19.c4 Nb4 20.Nc3+-) 19.Nc3 Ng5 (19...Nc5 20.Nc5 bc5 21.Ne4+-) 20.Qg4 h6 (20...Qe7 21.a4+-) 21.Ne4 Kb8 (21...Ne4 22.Qe4 Re8 23.Qa4+-) 22.Ng5 hg5 23.Qg5 Rg8 (23...Nd6 24.Nd4 Qe8 25.d3+-) 24.Rf1 Qb5 25.e4 Nd6 26.Qb5 Nb5 27.d3 1-0. bjoernsen (2310) - gamal1957 (2185), Rated Blitz game, lichess.org, 2016.

6.Qd1 h5 7.Nf3 Bg4 8.Be2 Bf3 9.Bf3 e4 10.Be2 d4 11.0-0 d3? (better is 11...h4 12.Bc4 Ne7 13.ed4 Bd4+/–) 12.cd3+- ed3 13.Bf3 c6 14.Qb3 Qd6 (14...Ne7 15.Nc3 Nd7 16.Qe6+-) 15.Nc3 Ne7?? (15...Qd7+-) 16.Ne4 Qd5 (16...Qd8 17.Nf6 Kf8+-) 17.Nf6 Kf8 18.Nd5 cd5 19.Bh8 Kg8 20.Bf6 (20.Qc3 Kf7 21.Qc5 Nd7 22.Bd5 Ke8+-) 20...Nd7 21.Bd5 (better is 21.Be7!? Be7 22.Qd5 Kh8 23.Qd7 Bf6 24.Qb7 Rg8 25.Qa7 Rg7+-) 21...Kh7 22.Be7 Be7 23.Bb7 Rb8 24.Be4 (better is 24.Qf7 Kh8 25.Be4 Rg8 26.Qe7 Rg7 27.Qe8 Kh7 28.Bg6 Rg6 29.Qd7 Rg7 30.Qd3 Kh6+-) 24...Nf6 25.Qd3 (better is 25.Qf7 Kh8 26.Qe7 Ne4 27.Qe5 Kh7 28.Qb8 Nd2+-) 25...Rg8 26.Rac1 Rg7 27.Rc7 Ne4 28.Qe4 Bf6 29.Rg7 Kg7 30.Qb7 Kh6 31.Qa7 h4 32.b6 h3 33.b7 1–0. MasterofDisaster – RUaKnight, Live Game Caissa's Web, 2004.

6.Qh4 Qd6 7.f4 d4 8.Bd3 de3 9.Bg6 hg6 10.Qh8 Kf7? 11.Qh7 Kf8 12.de3 Be3 13.Nf3 Bf4?? 14.0-0 Bf5 15.Nc3 Qe7+= 16.Qe7 Ne7 17.Rad1 Nd7 18.Nd5?? Nd5–+ 19.Rd5 Nb6 20.Rc5?? Be3–+ 21.Kh1 Bc5 22.Nh4 Kg7 23.Nf5 gf5 24.Rf5 Nd5 25.a4 Ne3 26.Rf3 Rd8 27.h4 Rd2 28.Rg3 Kh6 29.Bc1 Rd1 30.Kh2 Rc1 0–1. elsh1403 – mazrekaj10, internet, 2011.

6.Qh4 Be6 7.f4 Nd7 8.Nf3 e4 9.Nd4 Bd4 10.Bd4 c5 11.Bb2 Qe7 12.Be2 h6 13.0-0 g5?? 14.fg5+- fg5 15.Qf2?? Rh7+= 16.Bh5 Bf7 17.g4 Bh5–/+ 18.gh5 0-0-0 19.Nc3 Rf8 20.Qg3 Qe6 21.Rf8 Nf8 22.Rf1 Nd7 23.h3 Ngf6 24.Ne2 Nh5 25.Qg4 Qg4?? 26.hg4+- Ng7 27.Rf7 Kd8 28.Rg7 Rg7 29.Bg7 Ke7 30.Bh6 Kf6 31.Ng3 Kg6 32.Nf5 Ne5 33.Bf8 Ng4 34.Nd6 b6 35.Nc8 1–0. elsh1403 – catamef, internet, 2011.

6.Qh4 Be6 7.f4 ef4 8.ef4 Nd7 9.Bd3 Be7?? 10.Bg6!+- hg6 11.Qh8 Kf8 12.Nf3 Bc5 13.d4 Bd6 14.0-0 Bf4 15.Nbd2 Qe7 16.Rae1 Qf7 17.Ba3 Bd6 18.Bd6 cd6 19.Ng5!! fg5 20.Rf7 Bf7 21.Nf3 g4 22.Ng5 Ndf6 23.Nh7 Nh7 24.Qh7 Rc8 25.Qh4 Rc2 26.Qg4 Ra2 27.Rc1 Rd2 28.Qf4 Re2 29.Rc7 Re7 30.Qd6 a6 31.Qe7 Ne7+= 32.Re7?? Ke7–+ 33.h3 Kd6 34.h4 ab5 35.g3 Be6 36.Kf2 Bf5 37.g4 b6 38.Kg3 (38.Kg3 Be4 39.h5–+) 1–0. elsh1403 – kuba112 (1710), internet, 2011.

6.Qh4 Ne7?? 7.Qf6+- Rf8 8.Qe5 Nd7 9.Qg5 c6 10.c4 Qb6 11.Nc3 d4? 12.Ne4 Rf5 13.Qh6 de3 14.fe3 Rh5? 15.Qg7+- Be3? 16.Qh8 Nf8 17.Nf6 Kf7 18.Nh5 gh5 19.Qg7 Ke8 20.Bf6 Bc5?? 21.0-0-0 Bf5 22.Re1 Qc7 23.Nf3 a6 24.Ne5 ab5 25.Qf7 Kd8 26.Qf8 1–0. elsh1403 – sirius, internet, 2011.

6.Qh4 Kf7 7.f4 ef4= 8.ef4 d4 9.Nf3 Bf5 10.Bc4 Kg7 11.0-0 Bc2 12.Kh1 Bf5 13.g4 Be4=+ 14.d3 Bd5 15.Kg1 Ne7 16.Nbd2 Nd7 17.Nb3 Bd6 18.Nfd4 c5?? 19.bc6!+- bc6 20.Ne6 Be6+= 21.Be6 Qb6?? 22.Kh1+- Nc5 23.Qf6 Kh6 24.Qg5 1–0. elsh1403 – rossolimo, internet, 2011.

4.e3 c6

5.Ba3 Ba3 6.Na3 Qa5 7.Nb1 cb5 8.Nc3 b4 9.Nb5 Na6 10.a4 Ne7 11.c4 0-0 12.d4? (12.Nf3 Be6-+) 12...ed4 (better 12...b3 13.Qd2 Nb4 14.cd5-+) 13.ed4?? (13.Nd4 Rd8 14.cd5-+) 13...dc4 (13...b3 14.Qd2 Nb4 15.Rb1-+) 14.Qd2?? (14.Bc4!? Kh8 15.Nf3=+) 14...Kh8 (14...Be6 15.Nh3 Rfe8 16.Be2-+) 15.Ne2?? (better 15.Bc4 Rd8 16.Nf3-+) 15...c3 16.Qd3 b3 (better 16...Bf5 17.Qc4 Rac8-+) 17.Nd6 (17.Qc3 Nb4 18.Nf4-+) 17...c2 18.Nc3 Nb4 (better 18...b2 19.Rd1 c1Q-+) 19.Qd2 Bd7 (better 19...b2 20.Rb1 Ned5 21.Rb2 Nc3-+) 20.Nc4 Qg5 21.Qg5 fg5 22.Kd2 (22.Ne4 Be6 23.Nb2 Bd5-+) 22...b5 (22...Rf2!? 23.Be2 Be6 24.Nb2-+) 23.Nb2 (23.ab5 Rf2 24.Be2 Be6-+) 23...ba4 (better 23...Rf2 24.Be2 ba4 25.Raf1 Rg2 26.Rfg1 Rg1 27.Rg1-+) 24.Kc1 (24.f3 Rf4 25.Ne2 Rh4-+) 24...a3 (better 24...Rac8 25.Bc4 Rf2-+) 25.Nba4 (25.Ra3 Ned5 26.Rb3 Nc3 27.Rc3 Na2 28.Kc2 Rf2 29.Kd3 Rb2 30.Rc5-+) 25…b2 (25...b2 26.Nb2 ab2 27.Kb2 Rab8-+) 0-1. BitChess (2340) - AMADAN (2355), Rated Bullet tournament DH1ZkyHD, lichess.org, 2016.

5.a4 Qa5 6.Nc3 (6.Nf3 Bd6 (6...c5 7.c4 Ne7 8.cd5 Nd5 9.Bc4 Nb4+=; 6...Bf5 7.Be2 Bd6 8.0-0 Ne7 9.d4 e4=; 6...Nh6 7.Be2 Bd6 8.0-0 0-0 9.Ba3 Ba3=) 7.Be2 Ne7 8.0-0 0-0 9.d4 e4=; 6.Be2 Bb4 (6...c5 7.Nc3 Be6 8.Bh5 g6 9.Bg4 f5=; 6...Nh6 7.Nf3 Bd6 8.0-0 e4 9.Ne1 Qc7=; 6...Bf5 7.Nf3 Bd6 8.0-0 Ne7 9.d4 e4=; 6...Bd6 7.Nf3 Ne7 8.0-0 0-0 9.d4 e4=; 6...Be6 7.Nf3 Bd6 8.0-0 Ne7 9.Ba3 c5=) 7.Bc3 Ne7 8.Bb4 Qb4 9.Bh5 g6=) 6...Be6 (6...Bd6 7.Ba3 Ba3 8.Ra3 Ne7 9.Qh5 g6=; 6...Ne7 7.Ba3 Be6 8.bc6 Nec6 9.Bf8 Kf8=; 6...Bb4 7.Nf3 Ne7 8.Be2 0-0 9.0-0 Be6+=; 6...Bf5 7.Nf3 Bd6 8.Ba3 Ba3 9.Ra3 Ne7+=; 6...Nh6 7.Qh5 Nf7 8.Nf3 Bb4 9.Be2 g6=; 6...Bc5 7.bc6 bc6 8.Ba3 Ba3 9.Ra3 Ne7=) 7.Nf3 (7.Be2 Bb4 8.Bh5 g6 9.Bg4 Bd7=) 7...c5 8.Be2 d4 (8...Bd6 9.e4 d4+=) 9.Ne4 (9.ed4 cd4=) 9...Be7 (9...Bd5=) 10.c3 (10.ed4 cd4 11.c3 dc3 12.Bc3 Qd8+=) 10...de3 (10...Bd5 11.Qb1 f5 12.Ng3=) 11.de3= Nd7 12.Nfd2 0-0-0 13.Bc4 Bc4 (better is 13...Bf5!?=) 14.Nc4+- Qc7 15.Ncd6 Bd6 16.Nd6 (16.Qd6?! Nh6=) 16...Kb8 17.Nf7 Ne7 18.Nh8 Rh8 19.Qg4 Ng6 20.Rd1 Nb6 21.a5 Nc8 22.a6 Rd8 (22...Qb6 23.ab7 Qb7 24.0-0 Qb5 25.Rb1+-) 23.Rd8 Qd8 24.ab7 Nb6 25.0-0 (25.0-0 Kb7 26.Rd1+-) 1–0. pierre – mbz_iran, internet, 2008.

5.a4 Qb6 6.c4 a5 7.Nf3 (7.Nc3 Be6+/–) 7...Be6+= 8.Qc2 Nd7 9.Be2 (better is 9.bc6 Qc6 10.Nc3 dc4 11.d4=) 9...Rc8 (9...Bb4 10.0-0=) 10.d3 (better is 10.cd5 Bd5 11.Nc3+/–) 10...cb5 11.ab5 Qb5 (11...Bb4 12.Nbd2=) 12.Nc3 (worse is 12.cb5 Rc2 13.Bc3 Rc1 14.Bd1 Bb4 15.Bb4 ab4–/+) 12...Qc6 13.cd5 (13.Ra5 dc4 14.dc4 Bc4 15.Bc4 Qc4=) 13...Bd5= 14.e4 Be6 (better is 14...Bf7 15.0-0 Bb4=) 15.Ra5?? (better is 15.d4 Bb4 16.0-0=) 15...Bb4–+ 16.Ra4 (16.Ra7 Bc3 17.Qc3 Qc3 18.Bc3 Rc3 19.Rb7 Nc5 20.Rg7 Nd3 21.Kd2 Nf2 22.Kc3 Nh1–+) 16...Bc3 17.Bc3 Qc3 18.Qc3 Rc3 19.Ra8 Kf7 20.0-0 (20.Kd2 Rc7–+) 20...Nb6 21.Rb8 (21.Ra7 Bc8 22.d4–+) 21...Nd7?? (21...Bc8 22.Rb1 Nd7 23.Ra8–+) 22.Rb7?? (22.Ra8 Bg4 23.Rb1 Bf3 24.gf3–+) 22...Ne7–+ 23.Rfb1?! (23.d4 ed4 24.Nd4 Nc5–+) 23...Rhc8 (23...Nc5 24.Rc7–+) 24.h3? (24.d4 ed4 25.Nd4 Nc5–+) 24...Rc1 (24...Nc5 25.Ra7 Kf8 26.Ne1–+) 25.Kh2 (25.Bf1 Rb1 26.Rb1 Nc6–+) 25...Rb1 26.Rb1 Rc2 27.Bf1 Rf2 28.Kg1 (28.Rc1 Rb2–+) 28...Rc2 29.d4 ed4 30.Nd4 Rc7 31.Ne6 (31.Be2 Ng6–+) 31...Ke6 32.Kf2 Nc5 (32...Rc2 33.Ke3–+) 33.Kf3 (33.Ke3 Ra7–+) 33...Ng6 (33...Ra7!? 34.Rb6 Ke5 35.Rb5 Ra3 36.Kf2–+) 34.Bc4 (34.Ke3 Ne5–+) 34...Ke7 (34...Ke7 35.Bg8 Ne6–+) 0–1. GuestCNQL – GuestBXXT, freechess.org, 2017.

5.a4 Be7 6.Be2 Nh6 7.g4 (7.Nf3 e4 8.Nd4 c5=) 7...0-0–/+ 8.g5 Nf7 9.g6 hg6 10.Nf3 Bd7 (10...g5 11.Rg1–/+) 11.Nh4 g5 (11...Kh7 12.Rg1 g5 13.Ng2–/+) 12.Ng6+= Re8 13.h4 gh4 14.Rh4 (14.Ne7 Qe7 15.Rh4 Be6+=) 14...Nh6 (better is 14...Bd6+=) 15.Rh6? (better is 15.Ne7 Qe7 16.Ba3+=) 15...gh6–+ 16.Bh5 (16.Ne7 Qe7 17.Bh5 Qb4 (17...cb5?! 18.Be8 Be8 19.Qf3–/+) 18.Be8 Be8–+ (18...Qb2 19.Qh5 Qa1 20.Qg6 Kh8 21.Qh6 Kg8 22.Qg6 Kh8 23.Qf6 Kg8 24.Bf7 Kf8 25.Bg6 Kg8 26.Qf7 Kh8 27.Qh7)) 16...Kh7 17.Nc3? (17.Ne7 Re7 18.Qf3–+) 17...Rg8 18.Qf3 Be6 (better is 18...Rg6 19.Bg6 Kg6–+) 19.0-0-0? (19.Ne7 Qe7 20.a5–+) 19...Bd6 (19...Bd6 20.Rg1 e4–+; better is 19...Rg6 20.Bg6 Kg6 21.Rg1 Kh7 22.Qh5–+) 0–1. Hyperboleweevil (1900) – guest25, ICC, 2003.

5.Nc3 cb5 6.Qf3 (6.Bb5 Bd7 7.a4 (7.Qh5 g6 8.Qe2 Ne7 9.Ba3 Nbc6 10.Be7=) 7...a6 8.Bd7 Qd7 9.Qh5 g6 10.Qf3=) 6...Be6 7.Bb5 (7.Qh5 Bf7 8.Bb5 Nc6 9.Qd1 a6 10.Bc6+=) 7...Nc6 8.d4 (8.e4 Nge7 9.Ba3 Qd7 10.Nge2+=) 8...e4 9.Qg3 (9.Qd1 Bd6 10.Rb1+=) 9...Nge7 10.Rb1 (10.f3 Nf5 11.Qf2 Nd6–/+) 10...Ng6 (10...Nf5!? 11.Bc6 bc6–/+) 11.Nge2+= Bd6 12.f4 ef3 (12...0-0!?–/+) 13.Qf3= 0-0 14.0-0 Nce7 15.Bd3 Qc7 16.Qh5 (16.Nb5 Qc6+= (worse is 16...Bh2 17.Kh1 Qb8 18.g3+-)) 16...Rac8 (16...Qd7 17.h3=) 17.Nb5 Qb6 18.Nd6 Qd6 19.Bc3 Bf7? (better is 19...Qd7 20.h3 Bf7+=) 20.Rb7+- Nf4?? (better is 20...Rc7 21.Bb4 Qc6 22.Rc7 Qc7+-) 21.Qh7 1–0. wesolyPolak (1820) – Drezgach (1720), GameColony.com, 2002.

5.Nc3 Bc5 6.Qh5 g6 7.Qd1 Be6 8.bc6 (8.Nf3 a6 9.a4 Bd6=) 8...Nc6+= 9.Bb5 Nge7 10.Nge2 (10.Nf3 a6 11.Be2 0-0+=) 10...Qc7 11.d4 Bd6 12.0-0. Langguth,Wilhelm – Stoyanov,Angel M, ICCF World Cup8–9 prel–184, 1990.

5.c4 b6 6.bc6 Nc6 7.cd5 Qd5 8.Nc3 Qf7 9.Nf3 Bc5 10.Bb5 Bd7 11.0-0 Nge7 12.d4 ed4 13.ed4 Bd6 (13...Bb4 14.d5 Nb8 15.d6 Bc3 16.Bc3 Bb5 17.Re1+/-) 14.Re1 0-0 15.d5 (15.Qa4 Qe8+/-) 15...Ne5 (15...Nb8+=) 16.Ne5 (better 16.Re5 Be5 17.Bd7 Bc3 18.Be6 (18.Bc3?! Nd5 19.Bc6 Nc3=) 18...Qe6 19.de6 Bb2 20.Rb1+-) 16...fe5= 17.Bd7 Qf2 18.Kh1 Qb2 19.Ne4 Rad8 (19...Bb4!? 20.Re2 Qa3+=) 20.Be6+= Kh8 21.Ng5 e4 22.Nf7 (better 22.Qh5 h6 23.Nf7 Rf7 24.Qf7+=) 22...Rf7=+ 23.Bf7 Qe5 (23...Qf6 24.Rf1 Qh4 25.g3 Bg3 26.Qe2=+) 24.g3 (24.Qh5 Qh5 25.Bh5 g6=) 24...e3 (24...Bb4 25.Rf1 Nd5 26.Rc1=+) 25.Qf3 (better 25.Qd3!? Qf6 26.Rf1+=) 25...Rf8=+ 26.Rad1 Rf7?? (26...Nf5 27.Be6 Nd4-+) 27.Qf7+- Qe4 28.Kg1 e2?? (28...Ng8 29.Re2 Qg4+-) 29.Rd2 (better 29.Qe8 Ng8 30.Qe4 ed1R 31.Rd1+-) 29...Bc5-+ 30.Qf2 Nd5 (30...Bf2 31.Kf2 Nd5 32.Ree2 Qf5 33.Kg2-+) 31.Rde2 (31.Qc5 bc5 32.Ree2 Qb1 33.Kg2 Nf6 34.Rd8 Ng8-+) 31...Bf2 32.Kf2 Qd4 33.Kg2 h6 34.Re4 Qb2 (34...Qd3 35.R4e2-+) 35.R1e2 Qb5 36.Re5 Qc6 37.Kh3 (37.Kg1 Kh7-+) 37...Kh7 (better 37...Nf4 38.Kg4 Ne2 39.Re2-+) 38.g4 (38.Rf2-+) 38...Qc3 39.Kg2 Nf4 40.Kf2 (40.Kf1 Qh3 41.Ke1 Nd3 42.Kd2 Ne5 43.Re5 Qh2 44.Re2 Qf4 45.Re3 Qd4 46.Ke2 Qg4 47.Kd3 Qd1 48.Ke4 Qc2 49.Kf4 g5 50.Kf3 Qa2-+) 40...Ne2 (better 40...Nd3 41.Kf1 Ne5 42.a4-+) 41.Re2 Qh3 42.Re4 (42.Ke1-+) 42...Qg4 (better 42...Qh2 43.Kf3 Qa2-+) 43.Rg4+- g5 (43...b5 44.Re4+-) 44.Re4 Kg6 (44...Kg8 45.Re7 a5 46.Rb7+-) 45.Re7 Kf6 46.Ra7 h5 (46...b5 47.Ra6 Ke5 48.Rh6+-) 47.Rb7 h4 (47...Ke5 48.Rb6 h4 49.a4+-) 48.Rb6 Kf5 (48...Ke7 49.Rg6+-) 49.Kg2 (better 49.a4 g4 50.a5 g3 51.hg3 hg3 52.Kg3 Ke5 53.a6 Kd4 54.a7 Kc4 55.a8Q Kc5 56.Rc6 Kd4 57.Qa4 Ke3 58.Rd6 Ke2 59.Qe4 Kf1 60.Rd1) 49...Kg4 (49...Ke4+-) 50.h3 Kh5 51.Rb4 g4 52.hg4 (52.hg4 Kg6 53.a4+-) 1-0. ClayPigeons (2140) - Namanporwal1312 (2250), Rated Bullet game, lichess.org, 2021.

5.c4 Qb6 6.a4 a5 (6...Be6 7.cd5 cd5 8.d4=) 7.cd5 cd5 8.Qh5 g6 9.Qd1 Nd7 10.Qb3 (10.Nc3 Qe6=) 10...Ne7 11.Nc3 (11.d4 Bg7=) 11...Nc5+= 12.Nd5 (better is 12.Qa2+=) 12...Nb3?? (better is 12...Qd6 13.Nf6 Qf6–/+) 13.Nb6+/– Na1 14.Na8 Nc2 15.Kd1 Bf5 (15...Nb4 16.e4+/–) 16.Nc7 (better is 16.g4 Ne3 17.de3 (worse is 17.fe3 Be4+=) 17...Bg4 18.f3+-) 16...Kd8+/– 17.b6 Nc6? (17...Nb4 18.f4 Nc8 19.fe5 Nb6 20.ef6+/–) 18.d3 (better is 18.g4!? Ne3 19.de3 (worse is 19.fe3 Be4–/+) 19...Bg4 20.Be2+-) 18...N6b4 19.e4 (19.d4 ed4 20.ed4+/– (worse is 20.Bd4 Nd4 21.ed4 Bc2 22.Kd2 Ba4+=)) 19...Bd7= 20.Be2 (20.f4 Nd4=) 20...Ba4 21.Kd2 (21.f4+=) 21...Na2 (better is 21...Bh6!? 22.Kc3 Nd4–+) 22.Ne6= Kd7 (better is 22...Ke7!? 23.Nf8 Rf8= (23...Kf8? 24.f4+-)) 23.Nf8+/– Rf8 24.Nf3 (24.Bd1!? Nab4 25.Bc3+/–) 24...Ncb4 25.d4 Rc8 26.Bd3 (better is 26.Ne5 Ke7 27.Nc4+/–) 26...Nd3–/+ 27.Kd3 Nb4 (27...Rc2!? 28.Rb1 Rf2–/+) 28.Ke3= Rc2 29.Ba3?? (better is 29.Rb1 Bb5 30.de5 Re2 31.Kd4=) 29...Rc3–+ 30.Kd2 Ra3 31.Rc1 (31.Rc1 ed4 32.Rc7 Kd6 33.Rc8–+). GuestRVLP – GuestKLBX, freechess.org, 2017.

5.c4 dc4 6.a4 cb5 7.ab5 Be6 8.Na3 Nd7 (8...Ba3 9.Ra3 Qd5 10.Qa4–/+) 9.Nc4 Rc8 10.Na5 Qb6 11.Nf3 Bc5 (11...Ne7 12.d4=+) 12.Be2 (12.Ra4 Ne7=) 12...Ne7=+ 13.Nc4 (better 13.Ra4=+) 13...0-0?? (better 13...Bc4 14.Bc4 Be3 15.de3 Rc4–/+) 14.Nb6+- ab6 (14...Bb6 15.d4 e4 16.Nd2+-) 15.0-0 Nd5 (15...e4 16.Nd4 Bd4 17.Bd4+-) 16.d4 ed4 17.Nd4 Bf7 (17...Bd4 18.Qd4 Rfd8 19.Rfd1+-) 18.Bf3 (better 18.Bg4!? Ne5 19.Bc8 Rc8+-) 18...Rfd8 (18...Ne5 19.Be4+-) 19.Rc1 (19.Be4 Bd4 20.ed4 Nf8+-) 19...Ne5 20.Bg4 Ng4 21.Qg4 g6 (21...Bg6 22.Rfd1 Nc7 23.Nb3+-) 22.Rfd1 (better 22.e4 Ne7+-) 22...f5 (22...Ra8 23.Rd2+-) 23.Nf5 Nf6 (23...Kf8 24.Nh6 Ne3+-) 24.Bf6 (24.Bf6 Ra8 25.Nh6 Kf8 26.Qf4 Rd1 27.Rd1 Be6 28.Qc7 Bd5 29.Qd7 Be3 30.Qe7) 1–0. BeepBeepImAJeep (2605) – TOMADO1 (2220), lichess.org, 2017.

5.c4 Bd6 6.Qh5 g6 7.Qd1 Ne7 8.Nf3 0-0 9.Be2 Be6 10.Qc2 Nd7 11.0-0 Rc8 12.bc6 bc6 13.d3 Kg7 14.Nbd2 Bf7 15.Rac1 Nc5 16.d4 Ne4?? (better 16...ed4 17.Nd4 Qd7=) 17.de5+- fe5 (17...Nd2 A) 18.Nd2?! Be5 (18...fe5? 19.Nf3+-) 19.Be5 fe5+/-; B) worse 18.Qd2 fe5 19.Ne5 Be5 20.Be5 Kg8+-; C) 18.ef6 Kg8 19.Qd2+- (19.fe7?! Nf3 20.Bf3 Be7+-)) 18.Ne5 (18.Ne4 de4 19.Ne5 Be5 20.Be5 Kg8+-) 18...Kg8 (18...Nf6 19.Bg4 Nf5 20.Nf7 Kf7 21.Bf5 gf5 22.cd5 cd5 23.Qf5 Rb8+-) 19.Ne4 de4 (19...Be5 20.Be5 de4 21.Ba1+-) 20.Qe4 (better 20.Ng4 Be5 21.Be5+-) 20...Nf5 21.Rfd1 (21.Ng4 Rb8 22.Nf6 Kh8+-) 21...Qc7 (21...Qe7 22.Ng4 Be6 23.c5+-) 22.Ng4 Be7 (22...Rfd8 23.Nf6 Kf8 24.Nh7 Kg8 25.Nf6 Kf8 26.g3+-) 23.Nf6 (23.Qf5 h5 24.Nf6 Kg7 25.Qg5+-) 23...Bf6 24.Bf6 Rce8 25.Qg4 Be6 26.Qg5 Qf7 27.Ba1 Ne3 (27...c5 28.Qf4 Ng7 29.Qf7 Rf7+-) 28.Qe3 Bd5 (28...h5+-) 29.Qd4 (29.cd5?! Re3 30.fe3 Qf2 31.Kh1 Qe2 32.dc6 Rc8+- (32...Qa2?? 33.Rd7 Rc8 34.Rf1 Qa1 35.Ra1 Rc6 36.Rda7+-; 32...Qe3 33.c7 Rc8 34.Rd8 Kf7 35.Rf1 Ke6 36.Bd4 Qd4 37.Rc8+-)) 29...Re5 30.cd5 Rfe8 31.Bf3 (31.dc6 Kf8 32.c7 Re4 33.Qh8 Qg8 34.Qc3 Qf7 35.c8Q Rc8 36.Qh8 Ke7 37.Rc7 Rc7 38.Qd8 Ke6 39.Bg4 Rg4 40.Qd6 Kf5 41.Qe5) 31...Qe7 32.g3 (better 32.Qe5 Qe5 33.Be5 c5+-) 32...c5 33.Qd2 (better 33.Qe5 Qe5 34.Be5 Re5+-) 33...Qf6 34.d6 Qf3 35.Be5 Re5 36.d7 Kg7 37.d8Q Qf7 (37...a6 38.Qc7 Qf7 39.Qe5 Kg8 40.Qd8 Qf8 41.Rd7 c4 42.Qg7) 38.Q2d7 (38.Qb2 Kh6 39.Qe5 Qf5 40.Qh4 Qh5 41.Qhh5 gh5 42.Rd6) 38...Rf5 39.Qf7 Rf7 40.Qd6 h5 (40...Rf5 41.Rc5 Rf3 42.Rc7 Kh6 43.Qd2 Kh5 44.Rh7 Kg4 45.h3 Kf5 46.Qd5 Kf6 47.Rf7) 41.Qe5 Kh7 (41...Kg8 42.Rd8 Rf8 43.Qe6 Kg7 44.Rd7 Kh8 45.Qg6 Rf7 46.Rf7 c4 47.Rh7) 42.Rd6 (42.Rd8 g5 43.Qg5 a6 44.Rg8 Rf2 45.Qg6) 42...Rg7 (42...c4 43.Qe4 Rg7 44.Rc4 Kg8 45.Rg6 Kh7 46.Rg4 Kg8 47.Rc8 Kf7 48.Rf4) 43.Qe4 Kh6 (43...Rg8 44.Rc5 Kh8 45.Qe5 Rg7 46.Rg6 Kh7 47.Qg7) 44.Rc5 h4 (44...Kh7 45.Rh5 Kg8 46.Qe8) 45.gh4 (45.Qh4) 45...Kh7 (45...a6 46.Rg5 a5 47.Rdg6 Kh7 48.Rh5 Kg8 49.Qe8) 46.Rc8 (46.Rc8 a6 47.Qa8 Kh6 48.Rh8 Rh7 49.Qe8 Kh5 50.Qg6 Kh4 51.Rh7; 46.Rh5 Kg8 47.Qe8) 1-0. bjoernsen (2300) - babak1777 (2195), Rated Blitz game, lichess.org, 2016.

5.c4 Nd7 6.d4 Bb4 (6...Ne7 7.Nd2=) 7.Nc3 (7.Bc3 Bc3 8.Nc3 Ne7=) 7...Ne7 8.Qb3 Bc3 9.Bc3 0-0 10.Nf3 e4 11.Nd2 Kh8 (11...f5 12.Bb4 Nf6 13.Be2+=) 12.Bb4 White intends c5 12...Nb6 (12...dc4 13.Bc4 cb5 14.Qa3+/-) 13.Be7 (13.bc6!? bc6 14.cd5 cd5 15.a4+=) 13...Qe7+= 14.c5 Nd7 15.a4 (15.Be2 Qe6+=) 15...f5 16.g3 (16.Be2 Qf6+=) 16...g5 Black prepares the advance f4 (16...a6 17.Qc3=) 17.h4 f4 18.hg5 (18.a5 fg3 19.fg3 gh4 20.gh4 Qg7=+) 18...fg3 19.fg3 Qg5 20.Rg1 Nf6 21.Be2 Bg4 22.Nf1 (22.Bf1!?=) 22...Be2-/+ 23.Ke2 Ng4 24.Ra2 (24.Re1 Rf2 25.Kd1 Raf8-/+) 24...Rf7 (better 24...Rf2!? 25.Ke1 Qf6 26.bc6 Rf8-+ (worse 26...bc6 27.Nh2 Rh2 28.Rf1-+)) 25.Ke1-/+ Raf8 26.Re2 (26.bc6 bc6 27.Re2 Qh6-+) 26...Nf2 (26...Qh6 27.Nd2 Rf2 28.Rf2 Nf2 29.bc6 Nd3 30.Kd1 Qe3 31.Rh1 bc6 32.Kc2 Qd4 33.Qc3 Qc3 34.Kc3-+) 27.Kd2 Nd3 28.Nh2 Rf2 29.Rg2 Re2 30.Re2 Qg3 31.bc6 bc6 32.Qb7 (32.Qd1-+) 32…Qg1 (32...Qg1 33.Kc3 Qa1 34.Rb2 Qa4-+) 0-1. ClayPigeons (2150) - hoscarua (2270), Rated Blitz game, lichess.org, 2020.

5.c4 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.c4 c6).

5.bc6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c5 5.bc6).

5.d4 Qa5 6.Qd2 (6.Bc3 Bb4 7.Qd2 Bc3 8.Nc3 ed4 9.ed4 a6=) 6...Qb4 (6...Bb4 7.c3 Bd6 8.c4 Qd2 9.Nd2 Nd7=; 6...Qd2 7.Nd2 ed4 8.Bd4 Bd7 9.bc6 Nc6=; 6...Qc7 7.bc6 bc6 8.c4 Ne7 9.de5 fe5+=) 7.c3 Qa4 8.bc6 Qc6 9.de5 fe5 =.

5.d4 Nd7!? =.

5.Be2 A) 5...cb5 A1) 6.f4 ef4 (6...Nd7 7.fe5 fe5 8.Bb5 Bd6 9.Qh5 g6=; 6...Nc6 7.fe5 fe5 8.Nf3 Bd6 9.Bb5 Bg4=; 6...Bd6 7.Bb5 Bd7 8.Qg4 Bf8 9.Qh5 g6=; 6...e4 7.Bb5 Nc6 8.Nc3 a6 9.Ba4 Nge7=) 7.Bb5 Nc6 8.ef4 a6 9.Qh5 g6+=; A2) 6.Bb5 Bd7 7.Bd7 Nd7 8.Nc3 Nb6 9.Rb1 Bb4=; B) 5...Ne7 B1) 6.Nc3 a6 (6...Bf5 7.Nf3 a6 8.bc6 Nbc6 9.0-0 b5= ; 6...Nf5 7.Nf3 e4 8.Nd4 Nd4 9.ed4 a6=) 7.bc6 Nbc6 8.Nf3 b5 9.0-0 Bf5+=; B2) 6.d4 Ng6 (6...ed4 7.Bd4 Nf5 8.Nf3 Nd4 9.Nd4 Bd6= ; 6...e4 7.c4 cb5 8.cb5 Be6 9.Qb3 Nf5=) 7.de5 Ne5 8.Nd2 Qa5 9.bc6 Nbc6=; B3) 6.Nf3 cb5 (6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Nf5= ; 6...Bd7 7.Nc3 a6 8.a4 ab5 9.ab5 Ra1=) 7.Bb5 Nbc6 8.Nc3 a6 9.Be2 e4+=; B4) 6.bc6 Nbc6 7.Nc3 Nf5 8.Bh5 g6 9.Bf3 d4+=; B5) 6.a4 Ng6 7.Nf3 Bd6 8.Nc3 0-0 9.0-0 Qc7=; C) 5...Bd7 C1) 6.Nc3 Bd6 (6...Bb4 7.bc6 Bc6 8.Nf3 Ne7 9.0-0 0-0=; 6...Bf5 7.Nf3 cb5 8.Bb5 Nc6 9.0-0 a6=; 6...cb5 7.Nf3 b4 8.Nd5 Bc6 9.c4 e4=; 6...Ne7 7.Nf3 a6 8.a4 ab5 9.ab5 Ra1=; 6...Nh6 7.Nf3 Bd6 8.bc6 bc6 9.0-0 0-0=; 6...a6 7.bc6 Bc6 8.Nf3 b5 9.Nb1 Bd6=) 7.bc6 Bc6 8.Nf3 Ne7 9.Nb5 Bb5+=; C2) 6.d4 e4 (6...ed4 7.Bd4 cb5 8.Bd3 Qa5 9.Nd2 Ne7= ) 7.c4 dc4 8.Bc4 cb5 9.Bg8 Rg8=; C3) 6.a4 Nh6 (6...a6 7.Nf3 Bd6 8.Ba3 c5 9.d4 e4=; 6...Bd6 7.Ba3 Ba3 8.Ra3 Ne7 9.Nf3 e4=) 7.Nc3 Nf5 8.bc6 Bc6 9.Nf3 Bb4=; C4) 6.Nf3 Bd6 (6...cb5 7.Nc3 b4 8.Nd5 Bc6 9.c4 e4= ; 6...Ne7 7.Nc3 cb5 8.Nb5 Bf5 9.Ba3 Ng6=) 7.Nc3 Ne7 8.0-0 0-0 9.a4 a6=; D) 5...Bd6 6.d4 (6.Nc3 Ne7 7.Bh5 g6 8.Be2 a6 9.a4 0-0+= ) 6...Be6 (6...Qa5 7.Qd2 Qd2 8.Nd2 ed4 9.Bd4 c5=; 6...Ne7 7.c4 dc4 8.de5 fe5 9.Bc4 cb5=; 6...a6 7.de5 fe5 8.Nf3 Qe7 9.bc6 bc6=) 7.de5 fe5 8.Nf3 Qf6 9.Nbd2 Nd7+=.

5.Be5 fe5 6.Qh5 Kd7 7.Qe5 Qf6 8.Nf3 (8.bc6 bc6 9.Nf3 Bd6-+) 8...Qe5 (8...Bd6 9.Qd4-+) 9.Ne5 Ke6 10.d4 (10.Nf3 a6 11.c4 ab5 12.cd5 Kd5-+) 10...Bd6 11.Nf3 Nf6 12.c3 (12.c4 Ke7-+) 12...Ne4 (12...Bd7 13.bc6 Nc6 14.Nbd2-+) 13.Bd3 Rf8 (13...Kf6 14.Be4 de4 15.Nfd2-+) 14.0-0 (14.Be4 de4 15.Ng5 Kf5-+) 14...h6 (14...cb5 15.Bb5 Nc6 16.Bd3-+) 15.a4 Ke7 (15...Nd7 16.Nbd2 Nc3 17.Rfc1-+) 16.c4 Bf5 17.c5 Bc7 18.Rc1 (18.Nh4 Bh7 19.g4 g5 20.Nf5 Bf5 21.gf5 Ba5-+ (worse 21...Rf5 22.f3+=)) 18...Ng3 (better 18...Ng5!? 19.Ne1 Nd7-+) 19.Bf5-/+ Nf5 20.Nc3 (20.Nbd2 Ke6-/+) 20...Nd7 21.a5 (better 21.Rab1-/+) 21...Rae8?? (21...a6!? 22.b6 Bb8 23.h3-+) 22.Rcb1?? (22.a6 ba6 23.Ra6 Kd8 24.Ra7 Ne7 25.bc6 Nc6 26.Ra8 Bb8 27.Nd5 Rf5+-) 22...cb5?? (better 22...a6 23.bc6 bc6=+) 23.Nd5 (23.Rb5 Rb8 24.Nd5 Kd8+/-) 23...Kd8 24.Rb5 Kc8 25.a6 b6 (25...ba6 26.Ra6 Nf6 27.Nc7 Kc7 28.Ne5 Re5 29.de5+-) 26.cb6 (better 26.Rc1 Kd8 27.Nc7 Kc7 28.cb6 Kb8 29.ba7 Ka8 30.Rb7+-) 26...Nb6 27.Nb6 (27.Rc1!? Nd5 28.Rd5+/-) 27...Bb6+= 28.Rc1 Kb8 (28...Kd8!?+=) 29.Ne5+/- Nd6? (better 29...Ka8+/-) 30.Rd5+- Rc8 (30...Re5 31.de5 (31.Rd6?! Ra5=+) 31...Ne4 32.Rd7+-) 31.Nd7 (better 31.Nc6!? Rc6 32.Rc6 Ne8+-) 31...Ka8 32.Nb6?? (better 32.Re1 Ne4 33.Nf8 Rf8 34.Rd7+-) 32...ab6= 33.Rb1 (33.Rc8 Rc8 34.f3 Nc4=+) 33...Rc6 34.g3 (34.Re5 Rc2 35.f3 Nf5=+) 34...Ne4 (better 34...Ka7=+) 35.f4?? (better 35.Rb2=+) 35...Nc3-+ 36.Rbb5 (36.Rdb5 Nb5 37.Rb5 Ka7-+) 36...Nd5 (worse 36...Nb5 37.Rb5 Ka7 38.Kf2-+) 37.Rd5 Ka7 (37...Rc2 38.Rb5 Ka7 39.e4-+) 38.Rd7 (38.Rb5 Ka6 39.Rb1 Rc2-+) 38...Ka6 39.Rg7 (39.Kf2 b5 40.Ke2 b4-+) 39...b5 40.Kg2 (40.d5 Rc2 41.Rg6 Ka5 42.Kf1-+) 40...b4 41.d5 Rd6 (better 41...Rc2 42.Kf3 b3-+) 42.Rc7 b3 43.Rc3 (43.Rc1 Rd5 44.Kf3 Rb8-+) 43...b2 44.Ra3 (44.Rb3 Rb6 45.Rb2 Rb2 46.Kf3 Kb5-+) 44...Kb7 45.Rb3 Rb6 46.Rb2 Rb2 47.Kf3 Kc7 48.e4 (48.h3 Rb3 49.g4 Re8 50.Kg2 Ree3 51.Kf2 Rh3 52.g5 Rb2 53.Kg1 Rc3 54.d6 Kd6 55.gh6 Rc1) 48...Kd6 49.Kg4 White prepares f5 49...Rh2 50.f5 Ke5 51.d6 (51.Kf3 Rc8 52.Kg4 Ke4 53.f6 Rg8) 51...Ke4 52.f6 (52.d7 Rg8) 52…Rg8 0-1. miskob (2155) - Fasmc17 (2145), Rated Blitz game, lichess.org, 2017.

5.Nf3 d4 6.ed4+/– ed4 7.Nd4 cb5 8.Bb5+- Bd7 9.0-0 Bb5 10.Nb5 Nc6 11.Re1 Be7 12.N1c3 1–0. xadrezpg – danfroskel, net–chess.com, 2010.

5.Nf3 Bd6 A) 6.Be2 Ne7 (6...Bf5 7.Nc3 Ne7 8.0-0 0-0 9.Re1 cb5=; 6...e4 7.Nd4 c5 8.Nb3 Ne7 9.d3 ed3=; 6...Be6 7.Nc3 Ne7 8.0-0 0-0 9.bc6 Nbc6+=; 6...Nh6 7.Nc3 Be6 8.a4 c5 9.0-0 0-0=) 7.0-0 0-0 8.a4 a6 9.bc6 Nbc6+=; B) 6.d4 e4 (6...Bg4 7.h3 Bf3 8.Qf3 e4 9.Qg4 Qd7=) 7.Nfd2 Ne7 8.c4 0-0 9.Nc3 f5=.

5.Nf3 Bd7 6.Nh4 f5?? (better is 6...Nh6+=) 7.Qh5+- g6 8.Ng6! Nf6 (8...hg6 9.Qg6 Mate attack) 9.Qh4 Rg8 10.Ne5 Ne4?? (10...Be7+-) 11.Qh5 Ke7 (11...Rg6 12.Ng6 hg6 13.Qg6 Ke7 14.f3+-) 12.Qf7 Kd6 13.Ba3 (better is 13.Qg8 Qe7+-) 13...Ke5 (13...c5 14.Qg8 Ke5+-) 14.f4 1–0. Offenbach/Holaus,V (2285) – Man,Master (1775), remoteschach.de, 2006.

5.Nf3 Ne7 A) 6.Nc3 Bf5 (6...a6 7.a4 Bf5 8.Be2 Ng6 9.0-0 Bb4=) 7.Be2 cb5 8.Bb5 Nbc6 9.0-0 a6=; B) 6.d4 e4 7.Nfd2 Be6 8.c4 dc4 9.Bc4 Bc4=; C) 6.Be2 cb5 (6...a6 7.bc6 Nbc6 8.0-0 Be6 9.Nc3 b5+=; 6...Bd7 7.Nc3 a6 8.a4 ab5 9.ab5 Ra1=) 7.Bb5 Nbc6 8.0-0 Qb6 9.Nc3 a6+=; D) 6.a4 c5 (6...Ng6 7.Nc3 Bd6 8.Be2 0-0 9.0-0 e4=; 6...e4 7.Nd4 c5 8.Nb3 c4 9.Nd4 Nf5=; 6...Nf5 7.d4 e4 8.Nfd2 Be6 9.Be2 a6=) 7.d4 e4 8.Nfd2 cd4 9.Bd4 Nf5=.

5.Nf3 Bg4 6.Be2 Bd6 (6...Bf3 7.Bf3 cb5 8.Nc3 Ne7 9.Ba3 e4=; 6...cb5 7.Bb5 Nc6 8.Nc3 a6 9.Be2 Be6=) 7.0-0 Ne7 8.Nc3 0-0 9.Re1 a6 +=.

5.a4 a5

6.c4 d4 7.ed4+= ed4 8.Qh5 (8.Bd3 Nh6+=) 8...g6= 9.Qe2 Ne7 10.Nf3 c5 11.d3 Qc7 12.Nbd2 Bg7 13.0-0-0 (13.Ba3 b6=) 13...0-0+= 14.g3 Re8 15.Re1 Nd7 (15...Bh6 16.Bg2=) 16.Bg2 (16.Qe6 Kh8 17.Qf7 Qd8=) 16...Nb6 17.Qd1 Bd7 (17...Bf5 18.Ne4+=) 18.Qb3 Kf8 (18...Rad8 19.h4=) 19.Kc2 (19.Ba3 f5=) 19...Rac8 20.Re2 (20.Bc1 Bf5=) 20...Nf5 21.Rhe1 Nd6 (21...Re2 22.Re2 Nd6 23.Kb1=) 22.Ba3 Bf5 23.Nh4 (23.Kd1 Re2 24.Re2 Qd7=) 23...Bg4 24.Re8 Re8 25.Re8 Ke8 26.f3 Be6 27.f4 g5 28.fg5 fg5 29.Nhf3 g4 (29...h6 30.Kb1+=) 30.Ne1 (30.Ng5 Bf5=) 30...Nf5 31.Be4 Ne3 32.Kb1 Bf6 33.Ng2 Nc8 (33...Bg5!? 34.Bc1 Qf7–/+) 34.Nf4= Bg8 35.b6 Qb6 (35...Nb6 36.Qb5 Kd8 37.Qa5 Nd7 38.Qa8 Qc8 39.Bb7 Qa8 40.Ba8 Kc7+/–) 36.Qb6+= Nb6 37.Bb7 Kd8 38.Bc6 (worse is 38.Bc5 Na4 39.Bd6 Nc3 40.Kb2 Bf7+=) 38...Kc7 39.Bb5 Be7 (39...Nd1 40.Ne4 (40.Bc5?! Na4 41.Ba4 Nc3 42.Kc2 Na4+=) 40...Be7 41.Bc5 (worse is 41.Nc5 Nc3 42.Kc2 Kc8+/–) 41...Bc5 42.Nc5 Nc3 43.Kc2+-) 40.Nb3 Nf1 41.Nc5 Bg5?? (better is 41...Kc8 42.Ka2 Nh2+/–) 42.Nfe6+- (42.Nfe6 Be6 43.Ne6 Kb7 44.Ng5 Nh2 45.Ne6+-) 1–0. De Visser,Arno – van der Vliet, Noordkop, 1993.

6.c4 Bf5!? =.

6.d4 Nd7 =.

6.d4 e4 7.c4 Bb4 8.Bc3 Qe7 9.c5 Bc3 10.Nc3 Nh6 11.Nh3 (11.Qh5 Qf7 12.Qf7 Nf7+=) 11...0-0 (11...Bg4!? 12.Be2 Bh3 13.gh3 0-0+=) 12.Nf4+= Be6 13.Ne6 Qe6 14.Be2 f5 15.Qd2 Nd7 16.h3 g5 Black plans f4 17.b6 f4 18.0-0-0 Rf6 19.Bg4 (better is 19.h4!? fe3 20.Qe3+=) 19...Ng4+= 20.hg4 Kg7 (20...fe3 21.Qe3 Qg4 22.Rh2+=) 21.Rh5 (21.ef4 Rf4 22.f3 ef3 23.gf3 h6=) 21...h6 22.Ne2 Qg4 23.Rdh1? (23.Rh2 fe3 24.Qe3 Raf8=) 23...Nf8?? (better is 23...fe3 24.Qe3 Qg2–/+) 24.ef4= gf4 25.R5h4 Qg5 (25...Qg2? 26.Rg1 Qg1 27.Ng1+-) 26.Rh5 (better is 26.f3 Ng6 27.Rg4+/–) 26...Qg4+= (26...Qg2? 27.Rg1 (27.Nf4 Qf3 28.R5h4 Qa3 29.Kb1 Qb3 30.Kc1 Kf7+=) 27...Qg1 28.Ng1+-) 27.R5h4 Qg5 (27...Qg2? 28.Rg1 Qg1 29.Ng1+-) 28.Rh5 (28.f3 Ng6 29.Rg4 Qf5 30.Nf4 Qf4 31.Rf4 Nf4+/–) 28...Qg4+= (28...Qg2? 29.Rg1 (29.Nf4 Qf3 30.R5h4 Qa3 31.Kb1 Qb3 32.Kc1 Kf7+=) 29...Qg1 30.Ng1+-) 29.R5h4 Qg5 (29...Qg2? 30.Rg1 Qg1 31.Ng1+-) ½–½. whitecat25 – shakattack, ChessWorld.net, 2011.

6.Nf3 c5 7.d3 b6 8.Be2 Bb7 9.0-0 Bd6 10.Nbd2 Ne7 0–1. finnforce – shakattack, ChessWorld.net, 2011.

6.Qh5 g6 7.Qh4 Bg7 8.f4 Nh6 9.fe5 fe5 10.Qd8 Kd8 11.Nf3 Nf7 12.Na3 Be6 13.c4 Nd7 14.bc6 bc6 15.cd5 cd5 16.Bb5 Nc5 17.0-0 Ke7 18.Rac1 Rhc8 19.d4 e4 20.Nd2 Nh6 21.Rfe1 (21.dc5? Bb2 22.Nab1 Ng4–+) 21...Bd7 22.Rc2? (better is 22.Rc5 Rc5 23.dc5 Bb2 24.Bd7 Kd7 25.Nb5+=) 22...Na4–+ 23.Bd7 Rc2 24.Nc2 Nb2 25.Bh3 Nf5 26.Rb1 Rb8 27.Bf5 gf5 28.Na3 (better is 28.Kf1–+) 28...f4 29.ef4 Bd4 30.Kf1 a4 31.Nc2 Bc5 32.Ke2 a3 33.Ra1 Ra8 34.Nb3 Bd6 35.Nbd4 Bf4 36.Na3 Nc4 37.g3 Bd6 (37...Ra3?! 38.Ra3 Na3 39.gf4–+; 37...Na3?! 38.gf4 Ra4 39.h3–/+) 38.Nf5 Ke6 39.Nd6 (better is 39.Nd4 Kd7 40.Nac2 Ra1 41.Na1–+) 39...Ra3 (39...Na3 40.Nb5 Nb5 41.Ra8 Nd4 42.Ke3 Nf5 43.Kf4+/–; 39...Nd6?! 40.Nc2 Ra1 41.Na1–+) 40.Ra3 Na3 (40...Nd6?! 41.g4=; 40...Kd6?! 41.Ra7=) 41.Nb7 d4 42.Nc5 Kd5 43.Nb3 d3 44.Kd1 (44.Kd2 Nc4 45.Kc3 Ne5–+) 44...e3 45.g4 (45.Nc1 Kc4 46.Ne2–+) 45...Nc2 (45...Nc2 46.Nc1 Ke4–+; better is 45...e2 46.Kd2 Nc4 47.Ke1 Ne3–+) 0–1. Krafzik,Joachim (1935) – Kraft,Hans (2080), 13sen.WttgEM/Ellwangen, 2001.

5.a4 a6

6.Nc3 Bb4 7.f4 (7.Bd3 Ne7 8.Qh5 g6 9.Qh4 Qd6 10.e4+=; 7.Qh5 g6 8.Qh4 Qd6 9.Na2 Ba3 10.Rb1+=; 7.Nf3 Ne7 8.Be2 0-0 9.0-0 b6 10.Re1+=; 7.Be2 Ne7 8.Bh5 g6 9.Be2 b6 10.Nf3+=) 7...Nh6 8.Qh5 Nf7 9.Nf3 ef4 10.ef4+=.

6.Nc3 b6 7.f4 (7.Nf3 Bb4 8.Be2 Ne7 9.0-0 0-0 10.bc6+=; 7.Be2 Bb4 8.Nf3 Ne7 9.0-0 0-0 10.Rb1+=; 7.d4 e4 8.f3 Bb4 9.fe4 de4 10.Bc4+=) 7...ef4 8.ef4 Bf5 9.bc6 Nc6 10.g4=.

6.Nc3 c5 7.Be2 a5 (7...d4 8.Ne4=) 8.d3 (8.f4 Bf5+=) 8...d4 9.ed4 (9.Ne4 Be6=) 9...cd4= White has a new backward pawn: c2 10.Na2 Bc5 11.c3 Be6 12.Nf3 dc3 13.Bc3 Ne7 14.d4 ed4 15.Nd4 Bd4 16.Bd4 White has the pair of bishops 16...Nf5 17.Bc5 White traps the enemy king in the center (17.Bc3 Qd1 18.Bd1 Nd7=) 17...Qd1=/+ 18.Bd1 Nd7 Black threatens to win material: Nd7xc5 19.Ba3 Kf7 Black loses the right to castle 20.0-0 White castles and improves king safety 20...Rac8 21.Nc1 Rhe8 22.Bb3 Nd4 (22...Ne5 23.Be6 Re6 24.Rd1+=) 23.Be6 (23.Rd1!? deserves consideration 23...Nb3 24.Nb3=) 23...Re6=/+ 24.Rd1 (24.Bb2 Nc2 25.Ra2 Nb4–/+) 24...Nc2 25.Ra2 Re1 (better is 25...Nb6 26.f3 Rc4–/+) 26.Re1= Ne1 27.Re2 White threatens to win material: Re2xe1 27...Nc2 Black threatens to win material: Nc2xa3 28.Bb2?? White lets it slip away (28.Re7 Kg6 29.Bd6 Nb6 30.Rb7 Na4=) 28...Nb4?? not a good decision, because now the opponent is right back in the game (better is 28...Nb6 a shame that Black overlooked this excellent chance 29.h3 Na4–+) 29.Nb3= White threatens to win material: Nb3xa5 29...Nd3 30.Kf1 b6 Controls a5+c5 31.Bd4 (31.Rd2 Nb2 32.Rd7 Kf8+=) 31...Rc4 Black threatens to win material: Rc4xa4 (better is 31...Nc1!? 32.Rb2 Nb3 33.Rb3 Rc4–/+) 32.Rd2= N7c5 33.Bc5 Nc5 34.Nc5 bc5 A rook endgame occured (34...Rc5 35.Rd6=) 35.Rb2+/= Rb4?? (better is 35...Re4+= was a good chance to save the game) 36.Rb4+- ab4 37.b6 c4 38.b7 c3 39.b8Q c2 40.Qc7 Kg6N 41.Qc2 f5 42.a5 h6 43.a6 h5 44.a7 b3 45.Qb3 h4 46.a8Q Kg5 47.Qd8 Kh5 48.Qh8 Kg6 49.Qh4 f4 50.Qe6 1–0. Lopez Alfonso,A – Hernandorena de la Cruz,E, Oberena op 2nd, 1998.

6.Nc3 Bd6 7.Be2 (7.Nf3 Ne7 8.ba6 Na6 9.Be2 Bf5 10.Ba3+=; 7.bc6 bc6 8.Rb1 Ne7 9.Qh5 g6 10.Qf3+=) 7...Ne7 8.Bh5 g6 9.Be2 0-0 10.Nf3+=.

6.Nc3 Bd7 7.Be2 (7.bc6 bc6 8.Rb1 Qa5=) 7...Bb4 8.Nf3 (8.Bh5 g6 9.Be2 Ne7=) 8...Ne7 9.0-0 0-0 10.e4 (10.Na2!? Bd6 11.Nc3+=) 10...Bc3–/+ 11.Bc3 (11.dc3 de4 12.Nd2–/+) 11...Be6 (11...de4 12.Ne1–/+) 12.Bb4 (better is 12.ed5!? Nd5 13.Bb2=) 12...de4–/+ 13.Ne1 Re8 (13...b6 14.d3 c5 15.Bc3 ed3 16.Bd3 ab5 17.ab5 Ra1 18.Qa1–/+) 14.c4 (14.Bh5 g6 15.Be2 Nd5–/+) 14...Nf5 (14...ab5 15.ab5 Ra1 16.Qa1 cb5 17.cb5 Nd5–+) 15.Qc2 (better is 15.d3–/+) 15...Nd4–+ 16.Qe4 ab5 (16...f5 17.Qd3 e4 18.Qe3–+) 17.cb5 Bd5 (better is 17...f5!? 18.Qe3 f4 19.Qe5 Bb3–+) 18.Qe3 cb5 (18...Ne2?! 19.Qe2 cb5 20.Qb5–/+) 19.Bh5 Nbc6 (19...Re6 20.Bg4 f5 21.Bd1–+) 20.Bc3 (better is 20.Be8 Qe8 21.Bd6–/+) 20...b4 (20...Re7 21.ab5 Ra1 22.Ba1 Nb5 23.Nc2–+) 21.Bb2?? (21.Be8 Qe8 22.Bd4 ed4=) 21...Qd6?? (21...Re6 22.Bg4 f5 23.Bd1–+) 22.Nd3?? (better is 22.Be8 Re8 23.f4=) 22...Bc4 (better is 22...Red8!? 23.Ne1 Nb3–+) 23.Rfe1? (better is 23.Be8 Re8 24.Bd4 Nd4 25.Nb2 Bf1 26.Rf1–+) 23…Nf5 (23...Nf5 24.Qh3 Bd3 25.Be8 Re8–+; 23...g6 24.Bd4 ed4 25.Qf3 gh5 26.Re8 Re8 27.Rc1–+) 0–1. Norbeck,Ivar – Johansson,Knut, corr SSKK, 1985.

6.Nc3 Bf5 7.Nf3 (7.Be2 d4 8.ed4 ed4 9.Nb1 ab5 10.ab5=) 7...Ne7 8.Be2 b6 9.0-0 Ng6 10.d4=; E) 6...Be6 7.Nf3 Bd6 8.Be2 Qc7 9.Rb1 ab5 10.ab5+=.

6.c4 a5 7.Nc3 b6 (7...Be6 8.cd5 cd5 9.Rc1=) 8.cd5 (8.bc6 Nc6 9.cd5 Nb4+/–) 8...cd5+= 9.d4 Bb7 (9...ed4 10.Qd4 Bb4 11.Rd1+=) 10.Nf3 (10.de5 Bb4 11.Rc1+/–) 10...h5? (10...e4!? 11.Nd2 Bd6+=) 11.Be2 (11.de5 fe5 12.Ne5 Bd6+-) 11...g6 (better is 11...Qd6!?+/–) 12.de5+- Rh7 (12...Nd7 13.ef6 Qf6 14.Rc1+-) 13.Qc2 Rc7?? (13...f5+-) 14.Qg6 Rf7 (14...Kd7 15.Qf5 Ke8 16.Qh5 Kd7 17.Qg4 Ke8 18.Qg6 Kd7 19.Qg8+-) 15.e6 Nh6 16.ef7 Nf7 17.Qh5 1–0. Porkolab,Sandor – Lowrance,Mackenzie (1800), FICGS, 2009.

6.c4 ab5 7.ab5 Ra1 8.Ba1 dc4 9.Bc4 Bd7 10.Bg8 (better 10.Be5 cb5 11.Bg8+-) 10...Rg8=+ 11.Qh5 g6 12.Qh7 (better 12.Qd1–/+) 12...Bf5?? (better 12...Rg7 13.Qh4 Qa5 14.Be5 fe5–+) 13.Qg8+- Bb1 14.Ne2 (14.f4 Qd6+-) 14...Bf5 (14...Bd3 15.bc6 Nc6 16.f4+-) 15.bc6 (15.Nc3 Bd3 16.e4 g5 17.Qe6 Qe7 18.Qc8 Qd8 19.Qb7 Qd6+-) 15...bc6 (15...Qd3 16.Nc1 Qa3 17.0-0 Nc6 18.Bc3+-) 16.0-0 (16.d4 Qd6+-) 16...Qe7 (16...Qd5 17.Qh8+-) 17.Ng3 (17.d4 Nd7+-) 17...Bd3 18.Rb1?? (better 18.Rc1 Qf7 19.Qh8+-) 18...Nd7?? (better 18...Bb1 19.Qb3 Qb4 20.Qe6 Be7–+) 19.Rb7+- ½–½. aravind555 – Bezhval, lichess.org, 2019.

6.c4 Bc5 7.Nc3 Ne7 8.d4 Bb4 9.Qb3 a5 10.de5 fe5 11.0-0-0 Qc7 12.Na2 cb5 13.ab5 (13.Nb4 ab4 14.ab5 0-0 15.Qb4 Rf2+=) 13...Be6 (better is 13...Bd6!?–/+) 14.Nb4= ab4 15.Qb4 dc4 (better is 15...Nd7!?=) 16.Qd6+/– Qd6 17.Rd6 Bd5 18.Be5 0-0 19.Nf3 Ra5 (19...Bf3 20.Bc4 Deflection (20.Bc4 Decoy)) 20.e4! Bf7 (20...Be4 21.Rd4 Double attack (21.Bc4 Deflection; 21.Rd4 Decoy)) 21.Ng5 Rb5? (better is 21...Rc8 22.Nf7 Kf7+-) 22.Nf7 Rc8 23.Rd8 (23.Rd2!? Kf7 24.Bb8 Ra5+-) 23...Rd8 24.Nd8 Re5 25.Bc4 Kf8 26.Ne6 Kf7 27.Kd2 (better is 27.f4!? Ra5 28.Rd1 Ra1 29.Kd2 Rd1 30.Kd1+-) 27...Re6+/– (27...Re4?? 28.Ng5 Kg6 29.Ne4+-) 28.Be6 Ke6 29.Rb1 Kd6 30.Rb7 Nbc6 ½–½. Petrushin,Maxim – Samborskaya,Oksana, Maestro Open, Berdsk RUS, 2008.

6.bc6 A) 6...bc6 7.Nf3 (7.Nc3 Nd7 8.Bd3 Nh6 9.Be2 Rb8 10.Rb1+=; 7.Ba3 Ba3 8.Na3 Nd7 9.Nf3 Ne7 10.Be2+=) 7...Nd7 8.Ba3 Ba3 9.Ra3 Ne7 10.Be2+=; B) 6...Nc6 7.Nc3 (7.Nf3 Bf5 8.Be2 Bd6 9.0-0 Nge7 10.c4+=) 7...Be6 8.Nf3 e4 9.Ng1 Bd6 10.Qh5+=.

6.Bd3 A) 6...Ne7 7.f4 (7.Nc3 b6 8.Ba3 Be6 9.Be2 d4 10.ed4+=; 7.Ba3 b6 8.Qh5 g6 9.Be7 Ke7 10.Bg6+=; 7.Be2 b6 8.Nf3 Nf5 9.0-0 Bd6 10.d3=) 7...e4 8.Be2 Ng6 9.h4 ab5 10.ab5=; B) 6...Be6 7.Nf3 (7.Nc3 b6 8.Nf3 Bb4 9.0-0 Ne7 10.e4+=) 7...ab5 8.ab5 Ra1 9.Ba1 e4 10.Nd4=; C) 6...e4 7.Be2 Bd6 8.Bh5 g6 9.Be2 Nd7 10.Nc3=; D) 6...Nh6 7.Nc3 (7.f4 Nf7 8.fe5 fe5 9.Qh5 Bd6 10.e4+=) 7...Nd7 8.Be2 Nf5 9.e4 de4 10.ba6+=.

6.d4 A) 6...Bb4 7.Nd2 (7.c3 Bd6 8.c4 ed4 9.Bd4 ab5 10.ab5=) 7...ab5 8.ab5 Ra1 9.Qa1 ed4 10.Bd4=; B) 6...Nd7 7.de5 fe5 8.Nf3 Qa5 9.Nbd2 Bd6 10.Be2=; C) 6...e4 7.c4 ab5 8.ab5 Bb4 9.Nc3 Ra1 10.Qa1=; D) 6...ed4 7.Bd4 ab5 8.ab5 Bb4 9.Nd2 Ra1 10.Qa1=; E) 6...ab5 7.ab5 Ra1 8.Ba1 e4 9.c4 Be6 10.bc6=.

6.Be2 Bd6 7.Bh5 (7.Ba3 Ne7 8.Bd6 Qd6 9.Nc3 0-0 10.Nf3+=; 7.d4 Bf5 8.Nf3 e4 9.Nfd2 ab5 10.ab5=; 7.Nc3 Ne7 8.bc6 Nbc6 9.Bh5 g6 10.Be2+=; 7.ba6 Na6 8.Nf3 Ne7 9.0-0 0-0 10.c4+=) 7...g6 8.Be2 Ne7 9.Nf3 Qc7 10.Ba3 =.

6.Nf3 Bd6 (6...Bg4 7.Be2 Bd6 8.0-0 Ne7 9.h3 Be6 10.d4+=; 6...ab5 7.ab5 Ra1 8.Ba1 Nh6 9.Nc3 Bd6 10.Be2=) 7.Nc3 Ne7 8.ba6 Na6 9.Be2 0-0 10.0-0+=.

6.f4 A) 6...Nd7 7.Bd3 (7.fe5 fe5 8.Nf3 Bd6 9.Be2 Ngf6 10.0-0+=; 7.Nc3 Bd6 8.Qh5 g6 9.Qf3 Nc5 10.bc6+=; 7.Nf3 Bd6 8.fe5 fe5 9.Be2 Ngf6 10.0-0+=; 7.Qh5 g6 8.Qf3 Bd6 9.Nc3 Nc5 10.bc6+=) 7...Ne7 8.Nh3 ab5 9.ab5 Ra1 10.Ba1+=; B) 6...ab5 7.ab5 Ra1 8.Ba1 ef4 9.ef4 Bd6 10.Qh5+=; C) 6...e4 7.Qh5 g6 8.Qd1 Bd6 9.Ne2 Bg4 10.Nbc3=; D) 6...ef4 7.ef4 Bf5 8.Ne2 Bc5 9.Ng3 Qe7 10.Be2+=.

6.Qh5 g6 7.Qd1 Bd6 8.Be2 b6 9.Nf3 Ne7 10.0-0 +=.

6.Nc3 ab5

7.ab5 Ra1

8.Qa1 Bd6 9.Qd1 A) 9...Bf5 A1) 10.Nf3 Ne7 11.Nh4 Be6 12.Be2 Qa5 13.bc6 bc6 14.Nf3+=; A2) 10.Nge2 Ne7 (10...Bg4 11.h3 Bh5 12.g4 Bf7 13.f4 Ne7 14.Bg2+=; 10...Bg6 11.Ng3 Ne7 12.Be2 Qa5 13.0-0 Qb4 14.Ba1=; 10...Be6 11.Ng3 Ne7 12.Qh5 Bf7 13.Qf3 Qd7 14.Be2+=; 10...Nh6 11.Ng3 Be6 12.Bd3 0-0 13.0-0 Nd7 14.Qh5=) 11.Ng3 Be6 12.Qh5 Bf7 13.Qf3 0-0 14.Be2+=; A3) 10.Be2 Qa5 (10...Qc7 11.Nf3 Ne7 12.Nh4 Be6 13.Bh5 g6 14.Bg4+=; 10...d4 11.Nb1 de3 12.de3 cb5 13.Bb5 Nc6 14.Ne2=; 10...Nd7 11.Nf3 Ne7 12.0-0 0-0 13.Re1 Nb6 14.d3+=; 10...Qb6 11.Bg4 Bg6 12.Bh5 Ne7 13.Bg6 hg6 14.Qg4+=; 10...Ne7 11.Nf3 Qa5 12.0-0 Qb4 13.Qb1 Nd7 14.d3+=) 11.Bg4 Bg6 12.Be6 Qb4 13.Qc1 Nd7 14.Nf3+=; B) 9...Be6 B1) 10.Nf3 Ne7 (10...Qc7 11.e4 d4 12.Nb1 Ne7 13.c3 c5 14.Na3=; 10...c5 11.Be2 Ne7 12.0-0 0-0 13.d3 Nd7 14.Qd2+=; 10...Nh6 11.Be2 0-0 12.0-0 Qc7 13.h3 Nd7 14.Qa1+=) 11.Be2 0-0 12.0-0 Qc7 13.h3 c5 14.d3+=; B2) 10.Qh5 g6 (10...Bf7 11.Qg4 Bg6 12.Bd3 e4 13.Be2 f5 14.Qh3=) 11.Qh4 Nd7 12.Nf3 Ne7 13.e4 0-0 14.bc6+=; B3) 10.Bd3 Ne7 (10...e4 11.Be2 Ne7 12.f3 Bf5 13.fe4 de4 14.Bh5=) 11.Qh5 Bf7 12.Qg4 0-0 13.Qh3 e4 14.Be2+=; B4) 10.d4 Nh6 (10...Qa5 11.de5 fe5 12.Qh5 g6 13.Qd1 Bb4 14.Qd2–/+; 10...Ne7 11.de5 fe5 12.Nf3 0-0 13.Ng5 Bc8 14.Qh5+=; 10...e4 11.Nge2 Ne7 12.Nf4 Bf4 13.ef4 0-0 14.Ba3+=; 10...ed4 11.Qd4 Ne7 12.Nf3 Nd7 13.Be2 Ne5 14.0-0=) 11.de5 fe5 12.Nf3 0-0 13.Bd3 e4 14.Ne4–+; B5) 10.Qf3 Nd7 (10...Ne7 11.Qh5 g6 12.Qd1 0-0 13.Be2 Nf5 14.h4+=; 10...Nh6 11.Be2 0-0 12.Nh3 Bg4 13.Qg3 Be2 14.Ke2+=; 10...Qc7 11.Be2 Nh6 12.Qh5 Qf7 13.d4 Qh5 14.Bh5+=) 11.Qg3 Qe7 12.Be2 Nh6 13.Qh4 0-0 14.e4–/+; B6) 10.Be2 Ne7 (10...Nh6 11.Nf3 c5 12.d3 Nf7 13.Qa1 d4 14.Ne4=) 11.Bg4 f5 12.Bh5 g6 13.Be2 d4 14.Nb1=; C) 9...Ne7 10.Be2 (10.Qh5 g6 11.Qd1 0-0+= 12.Be2 Qc7 13.h4 Bf5 14.h5+=) 10...0-0 11.Nf3 e4 12.Nd4 c5 13.Nb3 Qc7 14.d3+=; D) 9...Qc7 D1) 10.Qh5 Qf7 11.Be2 Ne7 12.Qf7 Kf7 13.Nf3 Bf5 14.d3+=; D2) 10.Be2 Nh6 (10...Bf5 11.Bh5 g6 12.Be2 Ne7 13.Nf3 Be6 14.Qc1=; 10...Ne7 11.Bh5 g6 12.Be2 Bf5 13.Nf3 Be6 14.bc6=; 10...Nd7 11.Bh5 g6 12.Be2 Nb6 13.Nf3 Ne7 14.bc6=) 11.Bh5 Nf7 12.Nge2 g6 13.Bf3 e4 14.Be4+=; D3) 10.h3 Ne7 (10...Bf5 11.e4 de4 12.Qe2 Qa5 13.Ne4 Be4 14.Qe4+=; 10...Be6 11.Nf3 c5 12.Be2 Ne7 13.0-0 0-0 14.Qa1+=; 10...Nh6 11.Qh5 Qf7 12.Qf7 Nf7 13.Kd1 Be6 14.Nf3+=) 11.Qh5 g6 12.Qf3 0-0 13.e4 Be6 14.ed5+=; D4) 10.Nf3 Ne7 (10...Be6 11.e4 d4 12.Nb1 Ne7 13.c3 dc3 14.Nc3=; 10...Nh6 11.Be2 0-0 12.h3 Be6 13.0-0 Nd7 14.Qa1+=) 11.e4 0-0 12.bc6 bc6 13.ed5 Qb6 14.Ne4+=; D5) 10.Nge2 Nh6 (10...Ne7 11.Ng3 0-0 12.Bd3 Nd7 13.Qh5 g6 14.Qh4=; 10...Be6 11.Ng3 Nh6 12.Qh5 Qf7 13.Be2 Qh5 14.Nh5+=; 10...Bg4 11.h3 Bh5 12.g4 Bg6 13.Bg2 Ne7 14.d3+=) 11.Ng3 0-0 12.Be2 f5 13.Bh5 f4 14.ef4+=; D6) 10.Qe2 Nh6 (10...Be6 11.Qh5 Bf7 12.Qg4 Bg6 13.Qd1 Ne7 14.Nf3+=; 10...Ne7 11.Qh5 g6 12.Qd1 Bf5 13.Nf3 0-0 14.Be2+=) 11.Nf3 0-0 12.e4 Nf7 13.h3 Rd8 14.ed5+=; D7) 10.Qf3 Ne7 (10...Be6 11.Qh5 g6 12.Qh4 Nd7 13.Nf3 Ne7 14.Bd3+=; 10...Nh6 11.Be2 Nf5 12.e4 Nd4 13.Qh5 g6 14.Qh4+=; 10...Qf7 11.e4 d4 12.Nd1 Ne7 13.Ne2 0-0 14.c3+=) 11.Be2 0-0 12.e4 Be6 13.Nh3 Nd7 14.bc6–/+; D8) 10.Bd3 Ne7 (10...e4 11.Bf1 Nh6 12.d3 Qa5 13.bc6 Bb4 14.Qd2=; 10...Nh6 11.Qh5 Qf7 12.Qf7 Nf7 13.e4 d4 14.Na4+=; 10...Be6 11.Nf3 Ne7 12.e4 d4 13.Nb1 Ng6 14.Bf1+=) 11.e4 d4 12.Nce2 Be6 13.c3 c5 14.cd4+=; D9) 10.e4 d4 11.Nb1 Be6 12.c3 c5 13.Nf3 Qf7 14.Ba3=; E) 9...Qa5 E1) 10.Be2 Bf5 (10...Qb4 11.Ba1 Ne7 12.Bh5 Ng6 13.Nf3 Bg4 14.Bg4+=; 10...Ne7 11.Nf3 Qb4 12.Ba1 0-0 13.0-0 Bf5 14.d4+=; 10...Nh6 11.Nf3 Qb4 12.Ba1 0-0 13.0-0 Nf5 14.d3+=; 10...Be6 11.Bh5 g6 12.Be2 c5 13.Nf3 e4 14.Nh4=) 11.Bg4 Bg6 12.Be6 Qb4 13.Qc1 Nd7 14.Nf3+=; E2) 10.Nf3 Qb4 (10...Ne7 11.Be2 Qb4 12.Ba1 Bf5 13.0-0 d4 14.ed4+=; 10...Bg4 11.h3 Be6 12.Be2 Qb4 13.Ba1 Ne7 14.0-0+=; 10...Nh6 11.Be2 Qb4 12.Ba1 0-0 13.0-0 Nf5 14.Ne1=; 10...Be6 11.Be2 Qb4 12.Qb1 Ne7 13.0-0 0-0 14.Qa2=; 10...Nd7 11.Be2 Qb4 12.Qa1 Ne7 13.0-0 e4 14.Nd4=; 10...Qc7 11.Be2 Ne7 12.e4 0-0 13.bc6 bc6 14.ed5+=) 11.Qb1 Bf5 12.Be2 Ne7 13.bc6 bc6 14.0-0+=; E3) 10.Qh5 g6 11.Qd1 Ne7 12.Nf3 c5 13.e4 d4 14.Nb1+=; F) 9...Qb6 F1) 10.Nf3 Ne7 11.Be2 0-0 12.0-0 Bg4 13.Ne1 Be2 14.Qe2+=; F2) 10.Be2 Ne7 (10...Nh6 11.Nf3 0-0 12.0-0 Be6 13.Qa1 Nf5 14.Ba3=; 10...Bf5 11.Bg4 Bg6 12.Bh5 Ne7 13.Bg6 hg6 14.Qg4=; 10...Be6 11.Bh5 g6 12.Bg4 Bd7 13.Nh3 Ne7 14.Bd7+=; 10...Nd7 11.Nf3 Ne7 12.0-0 Qc7 13.d3 0-0 14.Qd2=) 11.Bh5 g6 12.Be2 0-0 13.Nf3 Bd7 14.bc6+=; F3) 10.Bd3 Ne7 11.Qh5 g6 12.Qd1 0-0 13.Be2 Bd7 14.Qb1+=; F4) 10.e4 Be6 (10...d4 11.Nb1 Bc5 12.Qh5 g6 13.Qf3 cb5 14.Qb3+=; 10...Ne7 11.Qh5 Kd8 12.Nf3 Be6 13.ed5 cd5 14.Be2+=) 11.ed5 cd5 12.Qh5 Kd8 13.Bd3 Nd7 14.Be2+=; F5) 10.Qh5 g6 11.Qd1 Ne7 12.Nf3 0-0 13.Be2 e4 14.Nd4=; G) 9...Nd7 G1) 10.Nf3 Nb6 (10...f5 11.Be2 Ngf6 12.Ng5 Nb6 13.0-0 0-0 14.Nf3+=; 10...e4 11.Nd4 Ne5 12.Be2 c5 13.Nb3 Ne7 14.d3=; 10...Ne7 11.Be2 0-0 12.0-0 Qc7 13.e4 d4 14.bc6+=; 10...Qc7 11.e4 Ne7 12.Be2 0-0 13.0-0 f5 14.bc6+=) 11.e4 Ne7 12.Be2 d4 13.Na2 Be6 14.Qb1–/+; G2) 10.Be2 Nh6 (10...Qc7 11.Bh5 g6 12.Be2 Nb6 13.Nf3 e4 14.Nd4+=; 10...Qa5 11.Nf3 Qb4 12.Qa1 Ne7 13.0-0 e4 14.Nd4=; 10...e4 11.d3 Qa5 12.de4 Qb4 13.bc6 bc6 14.Qa1+=; 10...Qb6 11.Nf3 Ne7 12.0-0 0-0 13.e4 f5 14.ed5=; 10...Ne7 11.Bh5 g6 12.Be2 c5 13.Nf3 e4 14.Ng1=; 10...Nb6 11.Bh5 g6 12.Be2 Ne7 13.Nf3 e4 14.Nd4=) 11.Bh5 Nf7 12.Nge2 g6 13.Bf3 Ng5 14.Ng3+=.

8.Qa1 Bd6 9.Be2 Ne7 10.Nf3 0-0 (10...e4 11.Nd4+= c5=) 11.0-0= (11.Qa2 Bf5=) 11...Be6 (11...e4=) 12.Qa7 (White is in command) 12...Qc7 13.b6 Qc8 (13...Qd7 14.Qa5+=) 14.Ba3= Ba3 15.Qa3 c5 (15...Qd8 16.Qa7 Nd7 17.Rb1=) 16.Na4+= Nd7 17.Bb5 Nf5 (17...Nc6 18.Nc5 Nb6 19.Rb1+=) 18.Bd7+/– Bd7 19.Nc5 Bc6 (19...Bb5 20.d3+/–) 20.Ra1 Nd6 21.d3 Nb5 (21...d4 22.ed4 Bf3 23.gf3+/–) 22.Qb3+- Nd6 (22...Be8!? 23.Qb4 Nd6+-) 23.e4 Kh8 24.ed5 Be8 (24...Bd7 25.d4+-) 25.Ne6 Rg8 26.Qa3 (26.d4 e4 27.Nd2 Bf7+-) 26...Nb5 27.Qe7 Qc2 28.h4 (better is 28.Ng7 Qc3 29.Rf1+-) 28...Qd3? (better is 28...Qc8+-) 29.Ra8 (29.Qb7?! Nd6 30.Qa8 Qb3+/–) 29...Qb1 30.Kh2 Qg6 31.Nf8 Qf7 32.Qe8 (32.Re8?! Qe7 33.Re7 Rf8 34.Rb7 Rd8+-) 32...Qd5 (32...Qe8 33.Re8 Nd6+-) 33.Ne6 (33.Ne6 Qe6 34.Qe6 Ra8 35.Qd5+-; better is 33.Qh5 h6 34.Qg6 Rf8 35.Rf8 Qg8 36.Rg8 Kg8 37.Qe8 Kh7 38.Qb5 h5+-) 1–0. pierre – thealchimist, internet, 2008.

8.Ba1 Ba3 A) 9.Be2 Ne7 (9...Bf5 10.Bh5 g6 11.Be2 b6 12.Nf3 Ne7 13.0-0=; 9...Be6 10.Bh5 g6 11.Be2 c5 12.Nb1 Bb4 13.Bc3=; 9...Nh6 10.Nf3 e4 11.Nd4 c5 12.Nb3 c4 13.Nd4=; 9...Bd7 10.Bh5 g6 11.Be2 Ne7 12.Nf3 0-0 13.0-0=; 9...b6 10.d4 e4 11.bc6 Bb4 12.Bb5 Qd6 13.Qb1+=; 9...c5 10.e4 d4 11.Nd5 f5 12.Bc4 Qh4 13.ef5+=) 10.Bh5 g6 11.Be2 0-0 12.Nf3 Bf5 13.0-0=; B) 9.Nf3 Bf5 (9...Ne7 10.Be2 0-0 11.0-0 Be6 12.Re1 b6 13.bc6=; 9...Be6 10.Be2 Ne7 11.0-0 0-0 12.Re1 b6 13.bc6=; 9...Bd7 10.Be2 Ne7 11.0-0 0-0 12.Re1 e4 13.Nd4=; 9...Nh6 10.Be2 0-0 11.0-0 Be6 12.Qe1 Qe8 13.Qd1=; 9...e4 10.Nd4 c5 11.Nb3 c4 12.Nd4 Ne7 13.d3=; 9...Nd7 10.Be2 Ne7 11.0-0 0-0 12.e4 Bb4 13.Re1=) 10.Be2 Ne7 11.0-0 0-0 12.Nh4 Be6 13.Nf3+=; C) 9.f4 Bd6 (9...Bf5 10.Nf3 Bd6 11.Nh4 Be6 12.Qh5 Bf7 13.Qg4=; 9...ef4 10.ef4 Qe7 11.Nge2 d4 12.Na4 d3 13.cd3=; 9...Nd7 10.Qh5 g6 11.Qh4 Ne7 12.fe5 fe5 13.Nf3=; 9...Qe7 10.fe5 fe5 11.Qh5 Kd8 12.Nf3 Nd7 13.Be2=; 9...Nh6 10.fe5 fe5 11.Nf3 Bd6 12.bc6 bc6 13.e4+=; 9...e4 10.Qh5 g6 11.Qd1 Be6 12.Nge2 c5 13.Nb1=) 10.Qh5 g6 11.Qe2 ef4 12.ef4 Ne7 13.bc6+=; D) 9.e4 Nh6 (9...Bc5 10.bc6 bc6 11.Qh5 g6 12.Qh4 Qa5 13.Bb2+=; 9...d4 10.Nb1 Bc5 11.bc6 Nc6 12.Bc4 f5 13.Bg8=; 9...de4 10.Ne4 Bf5 11.Qf3 Ne7 12.Ne2 Be4 13.Qe4=; 9...Ne7 10.Qh5 g6 11.Qh6 d4 12.Nb1 Bc5 13.Qg7=; 9...Be6 10.bc6 bc6 11.ed5 cd5 12.Bb5 Kf7 13.d4=; 9...Bb4 10.bc6 bc6 11.ed5 cd5 12.Bb5 Kf7 13.Qh5=) 10.d4 Bb4 11.Nge2 Qa5 12.de5 d4 13.ef6+=; E) 9.d4 Qa5 (9...Nd7 10.de5 fe5 11.Qh5 g6 12.Qd1 Ngf6 13.Nf3=; 9...ed4 10.Qd4 Bd6 11.Bd3 Qa5 12.Qa4 Qa4 13.Na4=; 9...Nh6 10.e4 Bb4 11.Nge2 Qa5 12.de5 d4 13.ef6+=; 9...e4 10.Nb1 Bb4 11.c3 Ba5 12.Nd2 Ne7 13.Qh5+=; 9...Bb4 10.de5 Qa5 11.Kd2 fe5 12.Qe1 Nf6 13.f3–/+; 9...Bd6 10.de5 fe5 11.Nf3 Nf6 12.Bb2 0-0 13.Be2+=) 10.de5 Bb4 11.Kd2 fe5 12.Qe1 Nf6 13.Bd3–+; F) 9.bc6 bc6 (9...Nc6 10.Qh5 g6 11.Qf3 Nb4 12.Qd1 Bf5 13.Bb5=) 10.Nf3 Ne7 11.Be2 0-0 12.0-0 Bf5 13.d4+=; G) 9.Qh5 g6 10.Qd1 Ne7 11.Be2 b6 12.Nf3 0-0 13.0-0=.

8.Ba1 Bb4 A) 9.f4 Nh6 (9...Bd6 10.fe5 fe5 11.Qh5 g6 12.Qe2 Nf6 13.bc6+=; 9...Nd7 10.Qh5 g6 11.Qh4 Ne7 12.fe5 Qa5 13.Bb2+=; 9...Qe7 10.fe5 fe5 11.Qh5 g6 12.Nd5 cd5 13.Qe5=; 9...ef4 10.ef4 Qe7 11.Kf2 Qc5 12.d4 Qd6 13.Qh5+=; 9...Bf5 10.g4 Be6 11.f5 Bf7 12.Bb2 Ne7 13.Nf3+=; 9...e4 10.Qh5 g6 11.Qd1 Be6 12.Nce2 c5 13.Bc3=) 10.fe5 fe5 11.Nf3 e4 12.Nd4 0-0 13.bc6+=; B) 9.Be2 Bd7 (9...Nh6 10.Nf3 e4 11.Nd4 c5 12.Nb3 c4 13.Nd4=; 9...Bf5 10.f4 Bd6 11.Nf3 ef4 12.Nd4 Ne7 13.ef4=; 9...Ne7 10.Nf3 0-0 11.0-0 Be6 12.Bb2 Nd7 13.Re1=; 9...Be6 10.Bh5 g6 11.Be2 c5 12.Nf3 d4 13.ed4=; 9...Nd7 10.Nf3 Ne7 11.0-0 0-0 12.Bb2 Nb6 13.Na2=; 9...c5 10.f4 ef4 11.ef4 Ne7 12.Bh5 g6 13.Be2=) 10.Nf3 Ne7 11.0-0 0-0 12.Bb2 Qb6 13.Na2=.

8.Ba1 Bd6 A) 9.Be2 Ne7 (9...Be6 10.Bh5 g6 11.Be2 c5 12.e4 d4 13.Nd5+=; 9...Bf5 10.Nf3 Ne7 11.0-0 0-0 12.Re1 Qb6 13.e4=; 9...Nh6 10.Bb2 0-0 11.Nf3 e4 12.Nd4 Nf5 13.Nf5=; 9...Qc7 10.Bh5 g6 11.Be2 Ne7 12.Nf3 e4 13.Nd4=; 9...e4 10.Bh5 g6 11.Be2 Qc7 12.f3 Bf5 13.fe4=; 9...Nd7 10.Nf3 Ne7 11.0-0 0-0 12.Bb2 Nb6 13.bc6=) 10.Bh5 g6 11.Be2 c5 12.d4 cd4 13.ed4+=; B) 9.Nf3 B1) 9...e4 10.Nd4 c5 11.Qh5 g6 12.Qd5 Ne7 13.Qc4=; B2) 9...Bf5 10.Be2 Ne7 11.0-0 0-0 12.Bb2 Qc7 13.d3=; B3) 9...Bg4 10.h3 Be6 11.Be2 Ne7 12.0-0 0-0 13.Re1+=; B4) 9...Nh6 10.Be2 e4 11.Nd4 Nf5 12.Nf5 Bf5 13.0-0=; B5) 9...Ne7 B51) 10.Be2 0-0 (10...e4 11.Nd4 c5 12.Nb3 Qc7 13.Bb2=) 11.0-0 Qc7+= (11...e4 12.Ne1 Qc7 13.h3=) 12.Qb1 e4 13.b6+=; B52) 10.bc6 bc6 11.Be2 e4 12.Nd4 Qc7 13.d3=; B6) 9...Qc7 10.Bb2 Ne7 11.Be2 e4 12.Nd4 0-0 13.f4=; B7) 9...Be6 10.Be2 Ne7 11.0-0 Qc7 12.e4 d4 13.Na4+=; C) 9.Qh5 g6 10.Qh4 Bf5 11.Qa4 Qb6 12.Nf3 Ne7 13.e4=.

8.Ba1 Be6 A) 9.Bd3 Nd7 (9...c5 10.f4 c4 11.f5 Bf7 12.Be2 Nh6 13.Bg4+=; 9...Nh6 10.Bb2 c5 11.e4 d4 12.Nd5 Bd5 13.ed5+=; 9...e4 10.Be2 Bd6 11.d3 Bb4 12.Bb2 c5 13.Bg4+=; 9...Bd6 10.Qh5 Bf7 11.Qg4 g6 12.Bb2 Nd7 13.Be2=; 9...Ne7 10.f4 e4 11.Be2 Nd7 12.Bh5 g6 13.Be2+=; 9...Qd6 10.Qh5 g6 11.Qd1 Ne7 12.Be2 Nf5 13.Nf3=) 10.Nf3 Nc5 11.Be2 d4 12.ed4 ed4 13.Nb1–/+; B) 9.Nf3 Qc7 (9...c5 10.Be2 Bd6 11.0-0 Ne7 12.d4 cd4 13.ed4+=; 9...Bd6 10.Be2 Ne7 11.0-0 0-0 12.Bb2 c5 13.d3+=; 9...Ba3 10.Be2 Ne7 11.0-0 0-0 12.Qe1 b6 13.bc6+=; 9...Nh6 10.Be2 Bd6 11.0-0 Qc7 12.h3 0-0 13.Bb2=; 9...Bb4 10.Be2 Ne7 11.0-0 0-0 12.Re1 c5 13.Bb2+=; 9...Be7 10.Be2 Nh6 11.0-0 0-0 12.Bb2 Qd6 13.Re1=) 10.Be2 Bd6 11.Bb2 Ne7 12.h3 0-0 13.0-0+=; C) 9.Bb2 Bd6 (9...Bb4 10.Nf3 Ne7 11.Be2 0-0 12.0-0 Nd7 13.Re1=; 9...Nh6 10.Qh5 Bf7 11.Qh3 Bd6 12.Be2 Qd7 13.Qd7+=; 9...Ne7 10.Nf3 Nf5 11.e4 Nd6 12.ed5 cd5 13.Bd3=; 9...Nd7 10.Nf3 Bd6 11.Be2 Ne7 12.0-0 0-0 13.Qe1+=; 9...c5 10.d4 cd4 11.ed4 Bb4 12.Nf3 Qc8 13.Qd2+=; 9...Be7 10.Bd3 Nh6 11.Nf3 c5 12.Be2 e4 13.Ng1+=) 10.Nf3 Ne7 11.Be2 Qc7 12.h3 0-0 13.0-0+=; D) 9.Qh5 Bf7 (9...g6 10.Qd1 c5 11.Nf3 Bd6 12.Be2 e4 13.Ng1=) 10.Qf3 Bd6 11.Qg4 Bg6 12.Nf3 Ne7 13.Be2+=; E) 9.d4 Nh6 (9...e4 10.Nge2 Bb4 11.bc6 Nc6 12.Nf4 Bf5 13.Bb5=; 9...ed4 10.Qd4 Bd6 11.Nf3 Ne7 12.Bd3 Nd7 13.0-0=; 9...Bd6 10.de5 fe5 11.Qh5 g6 12.Qd1 Qa5 13.bc6+=; 9...Nd7 10.de5 Ne5 11.Nf3 Nf3 12.Qf3 Qa5 13.Bb2+=; 9...Qc7 10.de5 fe5 11.b6 Qd6 12.Nf3 Nd7 13.Qb1=) 10.de5 fe5 11.Qh5 Nf7 12.Bd3 Qa5 13.Qd1–+; F) 9.Nge2 Bc5 (9...Bb4 10.Ng3 Nd7 11.Qh5 g6 12.Qf3 Nh6 13.h3+=; 9...Ne7 10.Ng3 Nd7 11.Be2 Nf5 12.Nf5 Bf5 13.0-0=; 9...Bd6 10.Ng3 Ne7 11.Qh5 Bf7 12.Qg4 Bg6 13.Be2+=; 9...Nd7 10.Ng3 Bd6 11.Be2 Ne7 12.Bh5 g6 13.Be2=; 9...cb5 10.Nb5 Nc6 11.Nec3 Nge7 12.Be2 Nf5 13.Bg4=; 9...Qb6 10.Ng3 Bd6 11.Bd3 Ne7 12.0-0 Nd7 13.Bb2=) 10.Ng3 Ne7 11.Qh5 Bf7 12.Qf3 Bg6 13.e4+=; G) 9.Be2 Nh6 (9...Bd6 10.Bh5 g6 11.Be2 c5 12.Nf3 e4 13.Ng1=; 9...c5 10.Bh5 g6 11.Be2 Ne7 12.Nf3 e4 13.Ng1=; 9...Bb4 10.Bh5 g6 11.Bg4 f5 12.Be2 d4 13.Nb1=; 9...Ba3 10.Bh5 g6 11.Be2 c5 12.Nb1 Bb4 13.Bc3=; 9...d4 10.ed4 ed4 11.Nb1 Bc5 12.Nf3 Ne7 13.0-0=) 10.Nf3 Bd6 11.0-0 Qc7 12.Qb1 Nd7 13.Qa2+=.

8.Ba1 Ne7 A) 9.f4 Ng6 (9...ef4 10.ef4 Ng6 11.Qh5 Qe7 12.Nce2 Qb4 13.Bd4+=; 9...Bf5 10.fe5 fe5 11.Nf3 Qd6 12.Be2 d4 13.Nb1=; 9...Be6 10.fe5 fe5 11.Nf3 Ng6 12.Be2 Bd6 13.0-0=; 9...Nd7 10.Nf3 c5 11.fe5 Ne5 12.Ne5 fe5 13.Qh5=; 9...e4 10.Nge2 c5 11.Ng3 Nf5 12.Nf5 Bf5 13.d3=; 9...Qd6 10.fe5 fe5 11.Be2 b6 12.bc6 Nbc6 13.Nb5=) 10.Qh5 Qa5 11.Bb2 Qb4 12.Bc1 ef4 13.Bd3–/+; B) 9.Nf3 Ng6 (9...e4 10.Nd4 c5 11.Nb3 c4 12.Nd4 Nf5 13.d3=; 9...c5 10.Be2 e4 11.Nh4 Qd6 12.f4 Nf5 13.Bg4=; 9...Nf5 10.e4 de4 11.Ne4 Be6 12.Be2 Nd6 13.Nc5=; 9...Bf5 10.Bb2 c5 11.Nh4 Be6 12.Be2 Qa5 13.Nf3=; 9...Bg4 10.Be2 cb5 11.Bb5 Nbc6 12.Be2 Qd7 13.0-0=; 9...Nd7 10.Be2 c5 11.0-0 Nb6 12.d3 Be6 13.d4=) 10.Be2 Bd6 11.0-0 0-0 12.Bb2 Qc7 13.bc6=; C) 9.Bb2 Nf5 (9...Be6 10.Be2 Nf5 11.Nh3 Nd6 12.Bh5 g6 13.Bg4=; 9...Bf5 10.Nf3 Nd7 11.Be2 c5 12.0-0 d4 13.Nb1=; 9...c5 10.d4 cd4 11.ed4 e4 12.Be2 Ng6 13.Bc1=; 9...Ng6 10.Nf3 e4 11.Nd4 c5 12.Nde2 c4 13.Ng3=; 9...Qd6 10.Nf3 Qb4 11.Ba1 Bd7 12.bc6 bc6 13.Be2=; 9...Qb6 10.Nf3 c5 11.Be2 e4 12.Nh4 g5 13.Na4=) 10.Be2 Bc5 11.Bh5 g6 12.Be2 Nh4 13.g3=; D) 9.Qh5 g6 (9...Ng6 10.Nf3 Qd7 11.e4 d4 12.Nd1 Qg4 13.Qg4+=) 10.Qf3 Nf5 11.Be2 e4 12.Ne4 de4 13.Qe4–/+; E) 9.Bd3 c5 (9...Be6 10.bc6 Nec6 11.Bb5 Bb4 12.Nf3 0-0 13.0-0+=; 9...Ng6 10.f4 e4 11.Be2 Bb4 12.Bh5 c5 13.Nge2=; 9...Nf5 10.e4 Nd4 11.ed5 cd5 12.Nge2 Bg4 13.Nb1=; 9...Bf5 10.Bf5 Nf5 11.e4 de4 12.bc6 Nc6 13.Ne4=; 9...Bd7 10.Bb2 Qb6 11.Qh5 g6 12.Qf3 Bg7 13.Be2=; 9...Qb6 10.Be2 c5 11.Nf3 e4 12.Nh4 g5 13.Na4=) 10.Be2 Ng6 11.e4 d4 12.Nd5 Be6 13.Bf3+=; F) 9.bc6 bc6 (9...Nbc6 10.Nf3 Nf5 11.Bb5 Bb4 12.0-0 0-0 13.Qe2=; 9...Nec6 10.e4 de4 11.Ne4 Be6 12.Bb5 Bb4 13.Qh5=) 10.Nf3 Ng6 11.Be2 Bd6 12.0-0 0-0 13.d3+=; G) 9.Be2 Nf5 (9...Bf5 10.bc6 Nec6 11.Nf3 Bc5 12.0-0 Nb4 13.Bb5=/4; 9...cb5 10.Bb5 Bd7 11.Bd7 Nd7 12.Nf3 f5 13.Qb1=; 9...Bd7 10.Nf3 cb5 11.Nb5 Qb6 12.0-0 Nf5 13.Qb1=; 9...c5 10.Nf3 Bf5 11.Nh4 Be6 12.0-0 Qb6 13.f4=) 10.Bh5 g6 11.Be2 Nh4 12.g3 Nf5 13.f4=.

8.Ba1 Bf5 A) 9.Nf3 c5 (9...Bd6 10.Nh4 Be6 11.Qh5 g6 12.Qd1 g5 13.Nf3+=; 9...Bb4 10.Be2 Ne7 11.0-0 0-0 12.Nh4 Be6 13.Bb2+=; 9...Qa5 10.Bb2 Qb4 11.Ba1 Bd6 12.bc6 bc6 13.Be2+=; 9...Ba3 10.Nh4 Be6 11.Be2 Ne7 12.0-0 0-0 13.Nf3=; 9...Ne7 10.Bb2 c5 11.Nh4 Be6 12.Be2 Qa5 13.Nf3=; 9...Nh6 10.Bb2 c5 11.d4 ed4 12.ed4 c4 13.Be2=) 10.d4 cd4 11.ed4 e4 12.Nh4 Be6 13.Qe2+=; B) 9.Nge2 Bg4 (9...Bc5 10.Ng3 Be6 11.Be2 Ne7 12.d4 Bb4 13.0-0+=; 9...Ne7 10.Ng3 Bg6 11.Be2 Nf5 12.Nf5 Bf5 13.0-0=; 9...Be6 10.Ng3 Bd6 11.Qh5 g6 12.Qf3 Nd7 13.Qd1+=; 9...Nh6 10.Ng3 Be6 11.Be2 d4 12.ed4 ed4 13.Nb1=; 9...Qa5 10.Bb2 Qb4 11.Ba1 Bd6 12.Ng3 Bg4 13.Be2=; 9...Bg6 10.Ng3 Nh6 11.Bb2 Bb4 12.Be2 0-0 13.0-0=) 10.h3 Bh5 11.f3 Bg6 12.Bb2 Bd6 13.d3+=.

8.Ba1 Nh6 A) 9.Nf3 Bg4 (9...Bb4 10.Be2 0-0 11.0-0 Bf5 12.Nh4 Be6 13.Nf3=; 9...Bf5 10.Be2 d4 11.ed4 ed4 12.Na2 d3 13.Bd3=; 9...Be7 10.Be2 e4 11.Nd4 0-0 12.0-0 c5 13.Nb3=; 9...e4 10.Nd4 c5 11.Qh5 g6 12.Qd5 cd4 13.Ne4=; 9...Be6 10.Be2 Bb4 11.0-0 0-0 12.Bb2 Nd7 13.Na2=; 9...Bd6 10.Be2 e4 11.Nd4 Nf5 12.Nf5 Bf5 13.0-0=) 10.Be2 Bb4 11.0-0 0-0 12.Bb2 Qb6 13.bc6+=; B) 9.Be2 Bc5 (9...Bd6 10.Nf3 e4 11.Nd4 Nf5 12.Nf5 Bf5 13.0-0=; 9...Bf5 10.Nf3 d4 11.ed4 ed4 12.Nb1 d3 13.Bd3=; 9...Bb4 10.Nf3 0-0 11.0-0 Bf5 12.Bb2 Qd7 13.b6=; 9...Be7 10.Nf3 e4 11.Nd4 0-0 12.f3 c5 13.Nb3=; 9...Nf5 10.Bh5 g6 11.Be2 Bc5 12.Nf3 e4 13.Ng1=) 10.Nf3 0-0 11.0-0 Bf5 12.d3 Qc7 13.e4=; C) 9.Qh5 g6 (9...Nf7 10.Nf3 Bd6 11.Be2 e4 12.Nd4 Qd7 13.d3=) 10.Qd1 Bd6 11.Be2 Nf5 12.e4 de4 13.Ne4=.

6.c4 Be6

7.Qc1 Bb4 A) 8.Nf3 Ne7 (8...ab5 9.ab5 Ra1 10.Ba1 Ne7 11.Bc3 Bd6+=; 8...Nh6 9.Ba3 Ba3 10.Ra3 Bg4 11.cd5 cd5+=; 8...cb5 9.ab5 Ne7 10.cd5 Bd5 11.Nc3 Bc3=; 8...Bg4 9.cd5 cd5 10.Be2 ab5 11.Bb5 Nd7+=) 9.Ba3 Ba3 10.Na3 Bg4 11.Be2 e4+=; B) 8.Ba3 Ba3 (8...Ba5 9.Nf3 Nh6 10.cd5 cd5 11.Qb2 Qd7=; 8...Qa5 9.Bb4 Qb4 10.cd5 Bd5 11.Nc3 Ne7=; 8...Be7 9.Nf3 Bg4 10.Rg1 e4 11.h3 Bc8+=; 8...Qe7 9.Bb4 Qb4 10.cd5 Bd5 11.Nc3 Ne7=) 9.Ra3 Ne7 10.Nf3 Bg4 11.cd5 Nd5+=; C) 8.Be2 Ne7 (8...ab5 9.cb5 Ne7 10.Nf3 Nd7 11.0-0 c5+=; 8...Qd6 9.Nf3 ab5 10.cb5 Nh6 11.Bc3 0-0+=; 8...Nh6 9.Nf3 ab5 10.ab5 Ra1 11.Ba1 0-0+=; 8...cb5 9.ab5 Nd7 10.ba6 ba6 11.Bc3 Bd6+=) 9.Nf3 ab5 10.ab5 Ra1 11.Ba1 0-0+=; D) 8.ba6 Na6 (8...ba6) 9.cd5 Bd5 10.Bc3 Ne7 11.Qb2 Bd6–/+; E) 8.cd5 cd5 (8...Bd5 9.Nc3 Be6 10.Nf3 Ne7 11.Qc2 ab5+=; 8...Qd5 9.Nc3 Qd7 10.Nf3 Ne7 11.d4 e4+=) 9.Bc3 Bd6 10.d4 Nd7 11.de5 fe5+=.

7.Qc1 ab5 A) 8.ab5 Ra1 (8...Ra5 9.Ra5 Qa5 10.cd5 cd5 11.Nf3 Nh6=) 9.Ba1 Bb4 10.cd5 cd5 11.Bc3 Bd6+=; B) 8.cb5 c5 9.Be2 Bd6 10.d4 Nd7 11.dc5 Nc5–/+; C) 8.cd5 Bd5 (8...Qd5 9.Nc3 Qd8 10.ab5 Ra1 11.Qa1 Ne7=) 9.ab5 Ra1 10.Ba1 Bd6 11.Nc3 Ne7+=.

7.Qc1 cb5 8.cd5 Qd5 (8...Bd5 9.ab5 a5 10.Nc3 Be6 11.Nf3 Nd7=) 9.ab5 Bb4 10.Nc3 Qd6 11.ba6 Na6=.

7.Qc1 dc4 8.Bc4 Bc4 9.Qc4 Qd5 (9...Ne7 10.Nc3 (10.ba6 Na6 11.d4+= Qd5+=) 10...Nd7 11.bc6 Nc6=) 10.Qd5= cd5 11.d4 (11.Nc3 ab5=) 11...Bb4 (11...e4=) 12.Nd2 (12.Bc3 Bd6=) 12...Nd7 13.Ne2 Rc8 14.Rc1 Ne7 (14...Rc1 15.Bc1 Nb6 16.de5 fe5 17.Bb2+=) 15.Rc8= Nc8 16.Bc3 Bc3 17.Nc3 ab5 18.Nb5 0-0 (18...Ke7 19.Ke2+=) 19.0-0 (19.Ke2 ed4 20.Nd4 Ncb6+=) 19...Ne7 20.Rc1 Nc6 21.Nd6 ed4 ½–½. Skaug,Thorbjorn – Lea,Per, Nakskov Norway, 1985.

7.Qc1 e4 8.Ne2 dc4 (8...Bf7 9.cd5 Bd5 10.Nbc3 ab5 11.Nd5 Qd5=; 8...ab5 9.ab5 Ra1 10.Ba1 dc4 11.Nd4 Bd5=; 8...Bg4 9.bc6 bc6 10.Nbc3 Bb4 11.Nd4 Ne7=) 9.Nf4 Bf5 10.Bc4 ab5 11.ab5 Ra1=.

7.Qc1 Be7 A) 8.c5 ab5 (8...Bf5 9.b6 Nd7 10.d4 Nh6 11.Nf3 Bg4+=; 8...Nh6 9.Nf3 ab5 10.ab5 Ra1 11.Ba1 b6+=; 8...b6 9.cb6 Qb6 10.a5 Qb7 11.b6 Nd7=; 8...Nd7 9.d4 Nh6 10.Nc3 0-0 11.Bd3 f5+=) 9.ab5 Ra1 10.Ba1 b6 11.cb6 Qb6+=; B) 8.cd5 cd5 (8...Qd5 9.Nc3 Qd8 10.Nf3 g5 11.h3 Bb4=; 8...Bd5 9.Nc3 Be6 10.Nf3 g5 11.h3 Bb4=) 9.d4 Nd7 10.ba6 ba6 11.de5 fe5=.

7.Qc1 Ne7 A) 8.Nf3 dc4 (8...b6 9.cd5 Bd5 10.Bc4 Bc4 11.Qc4 Qd5+=; 8...Nf5 9.d4 e4 10.Nfd2 ab5 11.ab5 Ra1=; 8...Ng6 9.c5 ab5 10.ab5 Ra1 11.Ba1 Bg4+=; 8...ab5 9.ab5 Ra1 10.Ba1 cb5 11.cd5 Nd5+=) 9.Na3 ab5 10.ab5 Ra4 11.bc6 Nbc6+=; B) 8.d4 ed4 (8...ab5 9.ab5 Ra1 10.Ba1 Ng6 11.Nf3 Bg4=; 8...Ng6 9.c5 ab5 10.ab5 Ra1 11.Ba1 b6+=; 8...dc4 9.de5 fe5 10.Bc4 Bc4 11.Qc4 Nd5=; 8...Nd7 9.Nd2 Bf5 10.c5 Ng6 11.Ne2 Bg4=) 9.Bd4 Nf5 10.Nf3 dc4 11.ba6 Na6+=; C) 8.ba6 Na6 9.d4 ed4 10.Bd4 Nf5 11.Nf3 Bb4+=; D) 8.Be2 dc4 9.Bc4 Bc4 10.Qc4 ab5 11.ab5 Ra1+=; E) 8.c5 ab5 (8...Nd7 9.d4 ab5 10.ab5 Ra1 11.Ba1 Ng6=; 8...Ng6 9.d4 ab5 10.ab5 Ra1 11.Ba1 b6+=; 8...Bf5 9.Nf3 ab5 10.ab5 Ra1 11.Ba1 b6=; 8...Nf5 9.d4 ed4 10.ed4 ab5 11.ab5 Ra1+=) 9.ab5 Ra1 10.Ba1 b6 11.d4 bc5+=.

7.Qc1 Nh6 A) 8.c5 ab5 (8...Qe7 9.d4 ed4 10.ed4 Bd7 11.Ne2 ab5=; 8...Be7 9.d4 ed4 10.Bd4 ab5 11.ab5 Ra1+=; 8...Qd7 9.d4 ed4 10.ed4 Be7 11.Nc3 Bg4=; 8...Nf7 9.d4 ab5 10.ab5 Ra1 11.Ba1 b6+=) 9.ab5 Ra1 10.Ba1 b6 11.d4 ed4+=; B) 8.ba6 Na6 9.d4 Bb4 10.Nd2 ed4 11.ed4 Bd2–/+; C) 8.cd5 cd5 (8...Qd5 9.Nf3 Bb4 10.Nc3 Qd6 11.Ne4 Qe7+=; 8...Bd5 9.Nc3 Be6 10.Nf3 Nf5 11.e4 Nd4=) 9.d4 Bd6 10.de5 fe5 11.Nf3 Nf7+=; D) 8.d4 ab5 (8...ed4 9.Bd4 Bb4 10.Bc3 Bd6 11.Nd2 ab5+=; 8...Bb4 9.Bc3 Bc3 10.Qc3 ed4 11.ed4 ab5+=; 8...dc4 9.Bc4 Bb4 10.Ke2 Bd5 11.Bd5 Qd5+=; 8...cb5 9.ab5 dc4 10.Bc4 Bb4 11.Ke2 Qd7=) 9.cb5 Nf7 10.bc6 Nc6 11.Bb5 Bb4+=; E) 8.Nf3 ab5 (8...Bb4 9.Ba3 Ba3 10.Ra3 Bg4 11.cd5 cd5+=; 8...Be7 9.c5 ab5 10.ab5 Ra1 11.Ba1 b6+=; 8...b6 9.cd5 Bd5 10.Nc3 Bf3 11.gf3 Bb4+=; 8...Nf5 9.c5 e4 10.Nd4 Nd4 11.ed4 b6+=) 9.ab5 Ra1 10.Ba1 Bb4 11.Bc3 Bd6+=.

7.bc6 Nc6 8.cd5 Qd5 9.Nc3 Qb3 10.Qb3 Bb3 11.Bd3 Nb4+=.

7.d3 Bb4 8.Bc3 Bc3 9.Nc3 ab5 10.ab5 Ra1 11.Qa1 Ne7 12.Qa7 (12.Nf3 Bg4=) 12...Qc7 (12...cb5 13.cb5 Qc8 14.Nge2=+) 13.b6= Qc8 14.Nge2 (14.Nf3!?=) 14...0-0 15.g3 (15.cd5 cd5 16.Qa3 Nec6–/+) 15...Nd7 (15...dc4 16.dc4 Na6 17.Nc1–+) 16.Bg2 (16.Qa3 c5 17.cd5 Nd5–/+) 16...dc4 17.dc4 Bc4 18.0-0 Nd5 19.Rd1 (19.Rb1 f5–/+) 19...Be2 (19...N5b6 20.Qa3–+) 20.Ne2 N7b6?? (better 20...N5b6 21.Qa2 Kh8–+) 21.e4+= Ne7? (21...Qg4 22.Re1 Rf7 23.Qb8 Rf8 24.Qb7 Qc8 25.Qc8 Rc8+- (25...Nc8? 26.ed5 cd5 27.Bd5 Kh8 28.Rc1+-)) 22.Qb6+- c5 (22...Ng6 23.Nc3+-) 23.Nc3 Qc6 24.Qc6 Nc6 25.Bf1 b6 (25...Nd4 26.Rb1 Rb8 27.Rb6+-) 26.Bb5 (26.Rd6!? Nd4+-) 26...Nd4 27.Bc4 Kh8 28.Kf1 Rb8 29.Ke1 (29.Rb1 g5+-) 29...b5? (better 29...g6!?+-) 30.Bb5! Nb5 (30...Rb5 31.Nb5) 31.Nb5 Rb5?? (31...Kg8 32.Nd6 Kf8+-) 32.Rd8 1–0. aravind555 – stingraypoint, lichess.org, 2018.

7.cd5 cd5 8.Nc3 Bb4 9.Nf3 Ne7 10.Be2 0-0 11.0-0 ab5 12.ab5 Ra1 13.Qa1 Nd7 14.d4 e4 15.Nd2 Nb6 16.Ba3 Ba3 17.Qa3 Qc7 18.Nb3 Ra8 (18...Qc3? 19.Rc1 (19.Qe7?! Bc8 20.Nc5 Qa5+/–) 19...Qc1 20.Nc1+-) 19.Qc5 Qd8 20.Qb4 g5 (20...Nf5 21.Nc5 Qe7 22.Bg4+=) 21.Nc5+/– Bc8 22.N3a4 Na4 23.Na4 f5 24.f3 Ng6 25.fe4 fe4 26.b6 Nh4 27.Qb3 Kg7 (27...Be6!?+/–) 28.Nc3+- Ra5 29.Qb4 Ra8 30.Nd5 Nf5 31.Qc5 Be6 (31...Ra2 32.Bg4 Nd6 33.Bc8 Nc8+-) 32.Nc7 (32.Nc7 Bd7 33.Qe5 Qf6 34.Qf6 Kf6 35.Na8+-) 1–0. Braak,Jelle van den (1945) – Roldan,Carlos Daniel (1810), ARG–NED, 2011.

7.cd5 cd5 8.Nc3 Bd6 9.ba6 ba6 10.Ba3 Ba3 11.Ra3 d4+=.

7.cd5 cd5 8.d4 Nd7 (8...Bb4 9.Bc3 Qa5 10.Qd2 Bc3 11.Nc3 Nd7=; 8...e4 9.Qb3 Nd7 10.Nd2 f5 11.Nh3 Ngf6=; 8...Qa5 9.Bc3 Bb4 10.Qd2 Bc3 11.Nc3 Nd7=) 9.de5 fe5 10.Nf3 Bd6 11.Nc3 Bb4=.

7.cd5 cd5 8.Nf3 Bd6 (8...Nh6 9.d4 e4 10.Nfd2 Be7 11.Qb3 Qd7=; 8...Nd7 9.d4 e4 10.Nfd2 f5 11.Ba3 Ba3=; 8...Ne7 9.Nc3 Nf5 10.d4 e4 11.Nd2 Be7=; 8...Bb4 9.Ba3 Ba3 10.Ra3 Ne7 11.d4 Nd7=) 9.d4 Nd7 10.de5 fe5 11.Nc3 Bb4=.

7.cd5 Qd5 A) 8.bc6 Nc6 9.Nc3 Qb3 10.Qb3 Bb3 11.Bd3 Nb4+=; B) 8.Nc3 Qd8 (8...Qd7 9.Nf3 Bb4 10.d4 ab5 11.ab5 Ra1=) 9.Nf3 Bb4 10.Qc2 ab5 11.ab5 Ra1=; C) 8.d4 ab5 9.ab5 Bb4 10.Nc3 Ra1 11.Ba1 ed4+=; D) 8.Qc2 Bb4 9.Nc3 Bc3 10.dc3 ab5 11.ab5 Ra1=; E) 8.Nf3 Qd7 (8...ab5 9.Nc3 Qb3 10.Qb3 Bb3 11.ab5 Ra1=; 8...Bb4 9.Nc3 Qd7 10.d4 ab5 11.ab5 Ra1=; 8...Qd8 9.Qc2 cb5 10.ab5 Qd7 11.d4 ed4+=) 9.Nc3 Bb4 10.d4 ab5 11.ab5 Ra1=.

7.cd5 Bd5 8.Qc2 ab5 (8...Ne7 9.Nc3 Be6 10.Nf3 Bf5 11.e4 Bg4=; 8...Be6 9.Nf3 cb5 10.ab5 Qd7 11.d4 ed4+=; 8...Bd6 9.Nc3 Ne7 10.Nd5 Nd5 11.Nf3 Qd7=; 8...Nh6 9.Nc3 Be6 10.Nf3 Bf5 11.e4 Be6=) 9.ab5 Ra1 10.Ba1 Bd6 11.e4 Be6=.

7.cd5 Bd5 8.Nc3 Bb4 9.Nf3 Bc3 10.Bc3 Bf3 (10...ab5!? 11.ab5 Ra1 12.Qa1 e4=) 11.Qf3+= ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Bc3 Qa3? (14...Qa2 15.Qe4 Qd5 16.Qa4+/–) 15.Be2 (better is 15.Qg4 Ne7 16.Qg7 Qc1 17.Ke2+-) 15...Qc1+/– 16.Bd1 Qa3? (better is 16...Ne7+/–) 17.Qg4+- Qe7 18.Qc8 Qd8 19.Qb7 Ne7 20.Bb4 (better is 20.bc6 Qc8 21.Qc8 Nc8 22.Bf3+-) 20...Nd5?? (20...c5 21.Bc5 Nd7+-) 21.bc6 (better is 21.Qg7 h5 22.Bc2+-) 21...Qc7 22.Qc7 (22.Ba4!? e4+-) 22...Nc7 23.Ba4 Kf7 24.0-0 Rd8 25.Ba5 Nba6 26.Rb1 Rd2 (26...Ke6+-) 27.Bd2 1–0. forsetinn – murfmonkey, gameknot.com, 2013.

7.cd5 Bd5 8.Nc3 ab5 9.Nd5 Qd5 10.ab5 Ra1 11.Qa1 Bb4=.

7.cd5 Bd5 8.Nc3 Be6= 9.Nf3 Bb4 10.Qc2 ab5 11.ab5 Ra1=.

7.cd5 Bd5 8.Nc3 Ne7 9.d4 ab5 10.de5 ba4 11.ef6 gf6=.

7.cd5 Bd5 8.Nc3 Bf7 9.Nf3 Bb4 10.Be2 Ne7 11.0-0 Nd5=.

5.a4 Bb4

6.Be2 A) 6...Ne7 7.Bh5 (7.Nf3 Bg4 8.0-0 0-0 9.d4 e4 10.Nfd2=; 7.Bc3 Bd6 8.Nf3 Qc7 9.h3 0-0 10.0-0+=; 7.Ba3 Ba3 8.Na3 0-0 9.Nf3 Qa5 10.0-0+=) 7...g6 8.Be2 0-0 9.Nf3 e4 10.Nd4=; B) 6...Bd6 7.Bh5 (7.Nc3 Ne7 8.Nf3 0-0 9.0-0 a6 10.e4+=) 7...g6 8.Be2 Ne7 9.Nf3 e4 10.Nd4=; C) 6...Nh6 7.Nf3 (7.Ba3 Ba3 8.Ra3 c5 9.d4 cd4 10.ed4+=) 7...e4 8.Nd4 0-0 9.0-0 Bd6 10.Nc3=; D) 6...Bf5 7.Nc3 (7.Nf3 Ne7 8.0-0 Bd6 9.Nc3 0-0 10.Re1=; 7.c3 Bd6 8.Nf3 Ne7 9.0-0 a6 10.Nh4+=) 7...Ne7 8.Bh5 g6 9.Be2 d4 10.ed4=; E) 6...c5 7.Bc3 Bc3 8.Nc3 Ne7 9.Nf3 e4 10.Ng1=.

6.Nf3 Bd6 7.Be2 e4 8.Nd4 c5 9.Nb3 Ne7 10.d3 =.

6.Nf3 e4 7.Nd4 Ne7 8.bc6 Nbc6 9.Qh5 g6 10.Qh4 =.

6.Nf3 Ne7 7.Ba3 Ba3 8.Ra3 0-0 9.d4 Qd6 10.Rb3 =.

6.Nf3 Ne7 7.Bc3 Bd6 8.bc6 Nbc6 9.Be2 Qc7 10.h3 –/+.

6.Nf3 Ne7 7.c4 c5 8.cd5 Nd5 9.Nc3 Be6 10.Be2 Nd7 11.0-0 0-0 12.Bc4 N7b6 13.Nd5 Bd5 14.Bd5 Qd5 15.d4 Nc4 (15...cd4!? 16.ed4 e4+=) 16.Qb3= Rad8 17.dc5 Bc5 18.Rfd1 Qf7 19.Rdc1 Nb2 20.Qb2 b6 21.Rd1 e4 22.Nd4 Bd4 23.Rd4 f5 24.Rad1 Rd4 25.Qd4 h6 26.h3 g5 27.Rc1 Qf6 28.Qd5 Qf7 0–1. finnforce – matty722, ChessWorld.net, 2012.

6.Nf3 Ne7 7.Be2 0-0 8.0-0 Bg4 9.d4 e4 10.Nfd2 =.

6.Nf3 Bg4 7.Be2 Ne7 8.0-0 0-0 9.d4 e4 10.Nfd2 =.

5.a4 cb5

6.ab5 a5 7.d4 e4 8.c4 dc4 9.Bc4 Bf5 10.Ne2 Bd6 11.Nd2 +/–.

6.ab5 a6 7.d4 Bb4 (7...e4 8.c4 (8.Nd2 Be6 9.Nh3 Bd6 10.ba6 Na6 11.Bb5=; 8.ba6 ba6 9.c4 f5 10.cd5 Qd5 11.Nc3=) 8...dc4 9.Bc4 Ne7 10.Nc3 f5 11.f3+/–) 8.Bc3 Qd6 9.Qd2 Bc3 10.Qc3 Ne7 11.de5 +=.

6.ab5 b6 7.c4 Bb7 8.Qb3 Bc5 9.Nf3 Ne7 10.d4 ed4 11.ed4 Bd6 12.Be2 0-0 13.0-0 Kh8 14.Nc3 dc4 15.Bc4 (15.Qc4 Nd5+=) 15...Bf3= 16.gf3 Qe8 (16...f5 17.Rfe1 Ng6 18.Bc1=) 17.Ne4+= Qg6 (17...Bc7 18.Rfe1 f5 19.Ng3+-) 18.Ng3 (better 18.Kh1 Bf4 19.Ba3+-) 18...Nf5?? (better 18...f5=) 19.Bd5+- Bg3 20.fg3 (20.Ba8?? Bf4 21.Kh1 Qh5 22.Qg8 Rg8 23.h3 Qh3 24.Kg1 Qh2; 20.hg3?! Ng3 21.fg3 Qg3 22.Kh1 Qh3 23.Kg1 Qg3 24.Kh1 Qh3 25.Kg1 Qg3=) 20...Ng3 21.Kf2 (21.Rf2 Nd7 22.Ba8 Ra8 23.hg3 Re8+-) 21...Nd7?? (better 21...Nf1 22.Ba8 Nh2 23.Ra7 Re8=+) 22.Ba8 (better 22.hg3 Rac8 23.Rfc1+- (23.Ra7?! Rc2 24.Ke1 Re8 25.Be4 Qg3 26.Kd1 Qg2 27.Qc2 Qf1 28.Kd2 Qb5+-)) 22...Nf5?? (better 22...Nf1 23.Bc6 Nd2+-) 23.Be4 Re8 (23...Qg5 24.Qd3 (24.Ra7?! Qd2 25.Kg1 Ne3+-) 24...Nh4 25.Rg1+- (25.Ra7?! Qg2 26.Ke3 Qb2+-)) 24.Rg1 (better 24.Qd5 Qh6 25.Qd7 Qh2 26.Ke1 Nd6 27.Ra7 Qg2+-) 24...Qh6 (24...Qh5 25.Bf5 Qf5+-) 25.Bf5 (25.Bf5 Nf8 26.Rg2+-) 1-0. CronusCR (2250) - wanderlust9 (1785), Hourly Bullet Arena, lichess.org, 2017.

6.ab5 Qb6 7.c4 Be6 8.cd5 Bd5 9.Nc3 Be6 10.Nf3 Nh6 (10...Nd7 11.Bd3+/–) 11.h3 (11.d4 Nd7+/–) 11...Be7 12.Be2 0-0 13.0-0 Nd7 14.d4 ed4 (14...Rfd8 15.Na4 Qc7 16.Qb1+/–) 15.Nd4+- Bf7 (15...Ne5 16.f4 Nc4 17.Ne6 Qe3 18.Kh1 Nb2 19.Qb3+-) 16.Bf3 (16.Nc6! bc6 17.Qd7 Bb4+-) 16...Ne5 17.Bd5 (17.Nd5 Nf3 18.Qf3 Bd5 19.Qd5 Kh8+-) 17...Rfd8 18.Bf7 Nhf7 19.Qb3 Nd7?? (better is 19...Qd6+/–) 20.Na4 (better is 20.Nd5!? Nc5 21.Ne7 Kf8+-) 20...Nc5 21.Nc5 (better is 21.Nb6!? Nb3 22.Na8 Na1+-) 21...Qc5? (21...Bc5 22.Rfc1 a6 23.Ne6+/–) 22.Ba3 (better is 22.Ne6 Qd5 23.Qd5 Rd5 24.Nc7+-) 22...Qc7?? (better is 22...Qe5+/–) 23.Ne6+- (23.Ne6 Qd7 24.Nd8 Bd8 25.Rfd1+-) 1–0. GuestJCLC – GuestXHBS, freechess.org, 2017.

6.ab5 Bc5 7.d4 Bb6? (better is 7...Bb4!? 8.Bc3 Qd6+= 9.Ra4 Bc3 10.Nc3=) 8.de5+/– fe5 9.Qh5 Kf8 10.Qe5 Nf6 11.Bd3 Bd7 12.Nf3 Qc7 13.Nbd2 Qe5 14.Be5 Be6 15.Bd6 Kf7?? (15...Ke8+-) 16.Ng5 Ke8 17.Ne6 1–0. marcosramos (2410) – alwayslosing (1920), net–chess.com, 2007.

6.Bb5 Nc6 7.Nf3 Bd6 8.d4 e4 9.Nfd2 a6 10.Be2 =.

6.d4 ba4 7.de5 Nc6 8.Bd3 +=.

6.d4 b4 7.de5= Nc6 8.Nf3 (8.Bd3 g6 9.Nf3 Bg7 10.ef6 Nf6=) 8...Bf5 (8...Bg4 9.ef6 Nf6 10.Bd3=) 9.Bb5+= a6 10.Bd3 Bd3 11.cd3 Be7 (11...fe5 12.Ne5 (worse is 12.Be5 Ne5 13.Ne5 Qg5+=) 12...Nf6 13.Nd2=) 12.0-0+= fe5 13.Ne5 Ne5 (13...Nf6 14.Nd2+=) 14.Be5 Bf6 (14...Nf6 15.Qb3+=) 15.d4 Qe7 16.Bg3 Rc8 (16...Nh6 17.Qb3+=) 17.Qb3+/– Qd7 18.Qb4 Ne7 19.Nd2 Nf5 (19...Nc6 20.Qb2+/–) 20.Rab1 (20.Be5 Be5 21.de5 Qe7 22.Qe7 Ke7+/–) 20...Ng3 21.hg3 Rc7 (21...Rb8 22.a5+/–) 22.a5 Kf7 23.Nb3 (23.Rfc1 Rhc8 24.Rc7 Rc7+/–) 23...Be7 24.Qd2 Rhc8 25.Rfc1 Rc1 (25...Kg8 26.Rc7 Rc7 27.Qd3+/–) 26.Nc1+/– Rc4 (26...Kg8!?+/–) 27.Nd3+- Kg8 (27...Bd6 28.Qd1 Kg6 29.Qf3+-) 28.Ne5 Qc8? (28...Qf5 29.Rb7 Rc2 30.Rb8 Bf8+-) 29.Nc4 dc4 30.Qc3 (30.Qa2 Kf8+-) 30...Bd8 31.e4 Qc7 (31...Qc6 32.d5 Qc7 33.Rc1+-) 32.Rb6 (32.Rb4 h6+-) 32...Kf8 (32...h6 33.Qb4 Kh7 34.Rb7+-) 33.Qf3 Kg8 34.Qf5 Qe7 (34...Qf7 35.Qf7 Kf7 36.Rb7 Ke8+-) 35.Qd5 Kh8 (35...Kf8 36.Rb7 Bc7 37.Qc4+-) 36.Rb7 h6 White now must not overlook the idea Qg5 37.Re7 (37.Re7 Be7 38.Qc4+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.ab5 Bb4

7.Ra4 A) 7...Qe7 8.Nc3 (8.Bd3 Be6 9.Qh5 Kd8 10.Bc3 Bc3 11.Nc3=; 8.b6 Nc6 9.Bb5 Qc5 10.Ra7 Ra7 11.ba7=; 8.Qf3 Be6 9.b6 a6 10.Bb5 Nd7 11.c3=; 8.Nf3 Nd7 9.Ba3 Ba3 10.Ra3 Nh6 11.Be2=) 8...Be6 9.b6 a5 10.Nb5 Na6 11.c3=; B) 7...Bd6 8.d4 Nd7 9.Ba3 Nb6 10.Bd6 Na4 11.de5+=.

7.Nc3 Ne7 8.Ra4 a5 9.ba6 Bc3 10.Bc3 =.

7.Be2 A) 7...Bf5 8.Ra4 (8.Nf3 Ne7 9.Ba3 Ba3 10.Ra3 0-0 11.d4=; 8.Bc3 Bd6 9.d4 Ne7 10.de5 fe5 11.Bh5=; 8.Bg4 Bd7 9.Ra4 a5 10.Bh5 g6 11.Be2=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Bh5 g6 11.Be2=) 8...Bd6 9.Nc3 Ne7 10.e4 de4 11.Ne4=; B) 7...Nh6 8.Nf3 (8.Ra4 Bd6 9.d4 Nd7 10.de5 Nb6 11.Bh5=; 8.Nc3 Be6 9.Ra4 Be7 10.Qa1 a6 11.ba6=; 8.c3 Bd6 9.Qb3 Be7 10.Ba3 Be6 11.Nf3=; 8.Bh5 Nf7 9.Bf7 Kf7 10.Qh5 g6 11.Qh4=) 8...0-0 9.0-0 Qc7 10.c3 Bd6 11.Qb3=; C) 7...Qc7 8.c3 (8.Ra4 Bd6 9.d4 Be6 10.de5 fe5 11.Nf3=; 8.Ba3 Ba3 9.Na3 Ne7 10.Bh5 Kd8 11.Be2=; 8.Nf3 Ne7 9.Ra4 Bd6 10.Ba3 Ba3 11.Ra3=; 8.Bc3 Bd6 9.Bh5 g6 10.Be2 Ne7 11.Nf3=) 8...Be7 9.Qb3 Qd8 10.c4 Be6 11.d4=; D) 7...Nd7 8.Nf3 (8.Bh5 g6 9.Be2 Ne7 10.Nf3 0-0 11.0-0=; 8.c3 Bd6 9.Ba3 Ba3 10.Na3 Ne7 11.Nf3=; 8.Ba3 Ba3 9.Na3 Ne7 10.Nf3 Nb6 11.c4=; 8.f4 Ne7 9.fe5 fe5 10.Nf3 Qc7 11.Ng5=) 8...Ne7 9.0-0 0-0 10.d4 Qc7 11.c4=; E) 7...Ne7 8.Nf3 (8.Bh5 Ng6 9.Ra4 Qe7 10.Nf3 Nd7 11.Nh4=; 8.Nc3 0-0 9.Nf3 a6 10.0-0 Be6 11.Ra4=; 8.Ra4 Bd6 9.Nf3 Nd7 10.0-0 0-0 11.Ra2=; 8.c3 Bd6 9.Bh5 g6 10.Be2 Bf5 11.Nf3=) 8...0-0 9.0-0 a6 10.d4 e4 11.Nfd2=.

7.Nf3 a6 8.c4 (8.ba6 ba6 9.Bc3 Bd6 10.d4 e4 11.Nfd2=; 8.Bc3; 8.Ra4; 8.Be2) 8...Be6 9.cd5 Qd5 10.Qa4 Qd6 11.Bc3 +=.

7.Nf3 Bd7 8.c4 (8.Ba3 Ba3 9.Ra3 Ne7 10.d4 Bg4 11.Be2=; 8.Bc3 Bd6 9.Be2 Ne7 10.–0 Qc7 11.h3+=; 8.Be2 Ne7 9.Ba3 Qa5 10.c3 Ba3 11.Na3=; 8.Ra4 a5 9.Ba3 Ba3 10.Na3 Be6 11.d4=) 8...Be6 9.Ra4 Ba5 10.Bc3 Bc7 11.cd5 +=.

7.Nf3 Nd7 8.Be2 (8.c3 Bd6 9.d4 Ne7 10.c4 dc4 11.de5=; 8.Ba3 Ba3 9.Ra3 Ne7 10.d4 Qc7 11.Nbd2=; 8.Nc3 Ne7 9.Be2 0-0 10.–0 Nb6 11.Ba3=; 8.Bc3 Bd6 9.d4 e4 10.Nfd2 Ne7 11.Bb2=) 8...Ne7 9.0-0 0-0 10.d4 Qc7 11.c4 =.

7.Nf3 Ne7 8.Ba3 Ba3 9.Ra3 0-0 10.Be2 a5 11.0-0 =.

7.Nf3 Ne7 8.Ra4 Bd6 9.Ba3 0-0 10.d4 Ba3 11.Ra3 =.

7.Nf3 Ne7 8.c3 Bd6 9.Be2 Bf5 10.c4 dc4 11.Bc4 =.

7.Nf3 Ne7 8.Nc3 0-0 9.Ra4 Bd6 10.e4 d4 11.Bc4 =.

7.Nf3 Ne7 8.Be2 0-0 9.0-0 a6 10.d4 e4 11.Nfd2 =.

7.Nf3 Ne7 8.Be2 Bf5 9.Ba3 Ba3 10.Na3 =.

7.Nf3 Nh6 8.Ra4 (8.Ba3 Ba3 9.Na3 0-0 10.Be2 Be6 11.0-0=; 8.Be2 0-0 9.0-0 a6 10.ba6 ba6 11.d4=; 8.Nc3; 8.c3) 8...Be7 9.Nc3 a6 10.Qa1 Bf5 11.ba6 +=.

7.f4 ef4 8.ef4 Qe7 9.Ne2 Bd7 10.c3 Bd6 11.Qb3 =.

7.Qh5 g6 8.Qh4 (8.Qd1) 8...Bd6 9.Bd3 e4 10.Be2 Be6 11.Bd4 +=.

6.ab5 Qc7

7.Nc3 Be6 8.Be2 Bc5 9.Bh5 g6 10.Bg4 =.

7.d4 Nd7 8.Nd2 Bb4 9.Rc1 Bc3 10.Bc3 Qc3 11.Ne2 +=.

7.d4 Nd7 8.Be2 e4 9.Ba3 Ba3 10.Ra3 Ne7 11.Nd2 =.

7.d4 Nd7 8.de5 fe5 9.Qd5 Qc2 10.Qd2 =.

7.d4 Nd7 8.Nf3 e4 9.Nfd2 Nb6 10.Ba3 Ba3 11.Na3 =.

7.d4 e4 8.Qh5 (8.Ba3; 8.Nd2; 8.c4; 8.Ne2) 8...g6 9.Qd5 Qc2 10.Qc4 Qc4 11.Bc4 +=.

7.d4 Bf5 8.de5 Qc2 9.Qc2 Bc2 10.Nd2 Nd7 11.Ngf3+=.

6.ab5 Bd6

7.Nc3 Be6 8.Qh5 (8.Nf3 Ne7 9.Be2 0-0 10.0-0 a6 11.Re1=; 8.Be2 Ne7 9.Bh5 g6 10.Bg4 f5 11.Be2=; 8.Ba3 Ne7 9.Be2 Ba3 10.Ra3 0-0 11.Nf3=; 8.d4 Ne7 9.de5 fe5 10.Nf3 0-0 11.Ng5=) 8...g6 9.Qf3 Bc5 10.Be2 e4 11.Qf4 =.

7.c4 dc4 8.Bc4 Qe7 (8...Ne7 9.d4=) 9.Qb3 Nh6 10.Nf3 (10.Nc3 Nf5+=) 10...Nd7 11.d4 Nb6 12.Bd5 (12.de5!? fe5 13.Nbd2=) 12...Nd5=+ 13.Qd5 Be6 14.Qe4 0-0 (14...f5!? 15.Qh4 e4 16.Qe7 Ke7=+) 15.de5= fe5 16.Ne5 Bd5?? (better 16...Nf7=) 17.Qd5+- Kh8 18.0-0 Rad8 (18...Rf5 19.f4+-) 19.Qe4 (19.Ra7 Rf5 20.Rd1 Bc7 21.Qd8 Bd8+-) 19...Nf5 (19...Rfe8 20.Ra7 Be5 21.Be5 Qe5 22.Qe5 Re5 23.Rb7+-) 20.Nd2 (20.Ra7 Be5 21.Qe5 Qe5 22.Be5 Rd5+-) 20...Bb8? (20...Be5 21.Qe5 Qe5 22.Be5 Rd2+-) 21.Ndf3 Qf6 (21...Rde8 22.Rfd1 Nd6 23.Qg4+-) 22.Nc4 (22.Qb7 Nd6 23.Qa6 Qe6+-) 22...Qg6 (22...Qf7 23.Nfe5 Qd5 24.Qd5 Rd5 25.b6+-) 23.Nfe5 (23.Qb7 Qh5+-) 23...Qg5 (23...Qe6 24.Qb7 Be5 25.Ne5 Nd6+-) 24.Nd2 Rfe8?? (24...Rd2 25.Qb4 Double attack (25.Qb4 Decoy)) 25.Ndf3 (better 25.Nf7 Kg8 26.Ng5 Re4 27.Nde4 h6+-) 25...Qg6 (25...Qf6 26.Qb7 Re5 27.Ra7+-) 26.Qg4 (better 26.Ng6 hg6 27.Rad1+-) 26...Qg4 27.Ng4 Nd6 (27...Rd5 28.Rfb1+-) 28.h3 (28.Rfd1 Kg8 29.Rd5 Nc4 30.Rd8 Rd8+-) 28...Ne4 (28...Nb5 29.Nh6 Rf8 30.Ng5+-) 29.Rfd1 Rd1 (29...Kg8 30.Kf1+-) 30.Rd1 h5 31.Rd7 (better 31.Nh6! Kh7 32.Nf5 Rc8+-) 31...hg4 32.hg4 (worse 32.Bg7 Kg8 33.hg4 Nc5+-) 32...Nc5 (32...b6+-) 33.Rb7 (better 33.Rg7 Be5 34.Ne5 Kg7 35.Nd7 Kg6 36.Nc5+-) 33...Nb7-+ 34.Nh4 (34.Nd4 Nd6-+) 34...Nc5 (34...Nd6 35.Nf5 Nf5 36.gf5-+) 35.Nf5 (better 35.Kf1-+) 35...Kg8 (35...Ne6 36.f4-+) 36.Nh4? (better 36.Bg7 Ne6 37.Bd4-/+) 36...Kf7 (better 36...Rd8 37.Kf1 Rd1 38.Ke2 Rb1-+) 37.Ng6?? (37.Nf3 Bd6-+) 37...Bd6 (better 37...Kg6 38.Bd4 Ne6-+) 38.Nf4 (38.Nh4 g6 39.Nf3-+) 38...Re6! 39.Bd4? (39.Ne6 Ne6 Combination) 39...Re4 (39...Re7 40.Nd5 Rb7 41.Nc3-+) 40.Ne2 Nd3 (better 40...Rg4 41.f4-+) 41.Ng3? (better 41.Nc3 Re7 42.Kf1-+) 41...Bb4 (41...Bg3 42.fg3 Rg4 43.Ba7-+) 42.Nh5 (better 42.Ne4 Ke6 43.Ba7+-) 42...a6 (better 42...Rg4 43.Ng7 Rg5-+) 43.Nf4?? (better 43.ba6 Bc5 44.a7-/+) 43...Ke8 (better 43...Nf4 44.Ba7 Nd3 45.ba6 Re6-+) 44.Kh2?? (44.Nd3 a5+-) 44...Kd8 (better 44...Bd6 45.ba6 Bf4 46.Kg1 Rd4 47.ed4 Bb8-+) 45.Kh3?? (better 45.ba6 Bc5 46.Nd3 Bd4 47.ed4+-) 45...Kc8 (45...Nf4 46.ef4 Rd4 47.ba6-+) 46.Ne6?? (better 46.Nd3 a5 47.Bg7+- (47.Nb4?! Rd4 48.Nc6 Ra4+=)) 46...Kd7 (better 46...Re6 47.ba6 Nf2 48.Kg3 Nd3-+) 47.Nc7 (47.Nc7 Kc7 48.ba6-+). ClayPigeons (2155) - ram_123 (2190), Rated Bullet game, lichess.org, 2019.

7.d4 A) 7...e4 8.Ba3 (8.c4; 8.Nd2) 8...Ba3 9.Ra3 Ne7 10.c4 0-0 11.Qb3+=; B) 7...Nh6 8.de5 (8.Be2; 8.Nc3) 8...Be5 9.Be5 fe5 10.c4 Be6 11.cd5+=; C) 7...Ne7 8.c4 (8.de5 fe5 9.Nf3 e4 10.Ne5 0-0 11.Qd4=) 8...Nd7 9.Qg4 Kf7 10.cd5 Nd5 11.Nf3=; D) 7...Nd7 8.de5 Ne5 9.Bd4 Bf5 10.Ba7 Qc8 11.b6=.

7.Qh5 g6 8.Qf3 Qc7 9.Qd5 Qc2 10.Bc3 Ke7 11.Bd3 +/–.

6.ab5 Nd7

7.Nc3 A) 7...Ne7 8.Qh5 (8.Nf3 Nb6 9.Be2 Nc4 10.Bc4 dc4 11.Qe2=; 8.Ba3 Nb6 9.Nf3 Bg4 10.Be2 Nc4 11.Bc5=; 8.Be2 Nb6 9.Nf3 Nc4 10.Bc4 dc4 11.Ba3=; 8.d4 Nb6 9.de5 fe5 10.Na4 Nd7 11.c4=) 8...g6 9.Qf3 Qc7 10.Nge2 a6 11.Ba3+=; B) 7...Nb6 8.Nf3 (8.Be2 Bb4 9.Nf3 Ne7 10.0-0 0-0 11.Na4=; 8.d4 e4 9.Ba3 Qc7 10.Qd2 Ba3 11.Ra3=; 8.Bd3 Nh6 9.Be2 Bd6 10.Nf3 0-0 11.0-0=; 8.Qh5 g6 9.Qd1 Bb4 10.Nf3 Bg4 11.Be2=) 8...Bb4 9.Be2 Ne7 10.0-0 0-0 11.d4=.

7.c4 Nb6 8.cd5 Nd5 Black creates threats along the open c–file 9.Nc3 Nc3 10.Bc3 Be6 11.Nf3 Bd6 (11...Bd5 12.Ra4=) 12.Be2 Ne7 13.0-0 0-0 14.Qc2 Nd5 15.d4?? (better 15.Bd3 h6 16.Bc4=) 15...Rc8–+ 16.Ra7 (16.Bd3 Nc3 17.Bh7 Kh8–+) 16...Rc3 (16...Nc3 17.de5 Nb5 18.Qd3 Na7 19.ed6–+) 17.Qb2 (17.Qb1 Qb6 18.Ra1 Rc7–+) 17...Qc8 (better 17...e4!? 18.Nd2 Bh2 19.Kh2 Qb8 20.Kg1 Qa7 21.Ne4–+) 18.de5 Rc2 19.Qa1 (19.Qb1 Bb8 20.Bd3 Rf2–+) 19…Be5 (19...Be5 20.Ne5 fe5–+; 19...Re2?! 20.ed6 Rc2 21.Nd4=+) 0–1. RichardSommer (2110) – arminahadian29 (2160), lichess.org, 2020.

7.d4 Bb4 (7...Qc7 8.de5 (8.Nf3; 8.Be2; 8.Nd2; 8.Ra2) 8...fe5 9.Qd5 Qc2 10.Qd2 Qb3 11.Nf3+=; 7...Nh6 8.de5 (8.Nf3; 8.Nd2; 8.Ne2; 8.Ra2) 8...Ne5 9.Bd4 Bb4 10.c3 Ba5 11.Ne2+=) 8.Bc3 (8.c3 Be7 9.Qf3 ed4 10.cd4 Nb6 11.Bd3=; 8.Nd2 a6 9.de5 fe5 10.Ngf3 Qc7 11.c3=) 8...Bc3 9.Nc3 Ne7 10.de5 Ne5 11.Qd4 =.

7.Be2 A) 7...Bb4 8.Nf3 (8.c3 Bd6 9.Ba3 Nb6 10.Bh5 g6 11.Be2=; 8.Ba3 Ba3 9.Na3 Ne7 10.Nf3 Nb6 11.c4=; 8.Bh5 g6 9.Be2 Ne7 10.Nf3 0-0 11.0-0=; 8.Bc3 Bd6 9.d4 e4 10.Ba5 b6 11.Bd2=) 8...Ne7 9.0-0 0-0 10.d4 Qc7 11.Ba3=; B) 7...Bd6 8.Bh5 (8.Nf3 Ne7 9.0-0 0-0 10.d4 e4 11.Nfd2=; 8.Ba3 Ba3 9.Na3 Ne7 10.Bh5 g6 11.Be2=; 8.Nc3 Ne7 9.Bh5 g6 10.Be2 Nb6 11.Nf3=; 8.d4 Ne7 9.de5 fe5 10.c4 Nb6 11.c5=) 8...g6 9.Be2 a6 10.d4 e4 11.Nd2=; C) 7...a6 8.Nf3 (8.Nc3 Nb6 9.ba6 ba6 10.Bh5 g6 11.Be2=; 8.ba6 ba6 9.Nc3 Nb6 10.Bh5 g6 11.Be2=; 8.d4 e4 9.Ba3 Ba3 10.Ra3 Ne7 11.Nd2=; 8.Bh5 g6 9.Be2 Bd6 10.d4 e4 11.Nd2=) 8...Bd6 9.ba6 ba6 10.Ba3 Ba3 11.Na3=; D) 7...a5 8.d4 (8.Nf3 Bd6 9.d4 Ne7 10.de5 Ne5 11.Ra4=; 8.Nc3 Nb6 9.Nf3 a4 10.Ba3 Ba3 11.Ra3=; 8.ba6 ba6 9.Nc3 Nb6 10.Bh5 g6 11.Be2=; 8.Bh5 g6 9.Be2 Nb6 10.d4 e4 11.Ba3=) 8...Bb4 9.Bc3 Bc3 10.Nc3 Ne7 11.de5=; E) 7...Nb6 8.d4 (8.Nf3 Bd6 9.Ba3 Ne7 10.d4 0-0 11.0-0=; 8.Ba3 Ba3 9.Na3 Ne7 10.Bh5 g6 11.Be2=; 8.Nc3 Bd6 9.Bh5 g6 10.Be2 Ne7 11.Nf3=) 8...Bb4 9.Nd2 e4 10.c3 Be7 11.Ba3=.

7.Nf3 A) 7...Bb4 8.Be2 (8.c3 Bd6 9.d4 Ne7 10.c4 dc4 11.Bc4=; 8.Ba3 Ba3 9.Ra3 Ne7 10.d4 Qc7 11.Nbd2=; 8.Nc3 Ne7 9.Be2 0-0 10.Ba3 Ba3 11.Ra3=; 8.Bc3 Bd6 9.d4 e4 10.Nfd2 f5 11.Bb2=) 8...Ne7 9.0-0 0-0 10.d4 Qc7 11.c4=; B) 7...Nb6 8.d4 (8.Be2 Bd6 9.0-0 Ne7 10.d4 Qc7 11.Ba3=; 8.Ba3 Ba3 9.Na3 Ne7 10.Be2 0-0 11.0-0=; 8.Nc3 Bd6 9.Be2 Ne7 10.Ba3 0-0 11.Bd6=; 8.d3 Bd6 9.Be2 Ne7 10.Ba3 a6 11.Bd6=) 8...e4 9.Nfd2 Nh6 10.Be2 Bd6 11.Ba3=; C) 7...Bd6 8.d4 (8.Nc3 Ne7 9.Be2 Nb6 10.0-0 0-0 11.Ba3=; 8.Be2 Ne7 9.0-0 0-0 10.d4 e4 11.Nfd2=; 8.Ba3 Ba3 9.Ra3 Ne7 10.d4 Qc7 11.Be2=) 8...Ne7 9.de5 Ne5 10.Bd4 Nf3 11.Qf3=; D) 7...Be7 8.Be2 (8.d4; 8.Nc3; 8.Ra2) 8...Nb6 9.d4 e4 10.Nfd2 Qc7 11.Ba3+=; E) 7...Qc7 8.d4 (8.Be2 Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Nc3=; 8.Nc3 Nb6 9.Be2 Bd6 10.Ba3 Ba3 11.Ra3=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Be2 0-0 11.0-0=) 8...e4 9.Nfd2 Nb6 10.Ba3 Ba3 11.Ra3=.

7.Qh5 g6 8.Qe2 (8.Qf3 Nb6 9.d4 Qc7 10.Qd1 Bb4 11.c3+=; 8.Qd1 a6 9.d4 e4 10.Nd2 Nb6 11.Ba3=; 8.Qg4 Nb6 9.Qd1 Qc7 10.Nc3 Bf5 11.Nf3=) 8...Nb6 9.f4 a6 10.fe5 Nc4 11.Bd4 =.

6.ab5 Be6

7.Nc3 A) 7...Nd7 8.Nf3 (8.Be2 Bd6 9.Bh5 g6 10.Be2 Nb6 11.Nf3=; 8.Qh5 g6 9.Qf3 Nb6 10.Ba3 Ba3 11.Ra3=; 8.Qf3 Nb6 9.Nh3 Nh6 10.Ba3 Ba3 11.Ra3+=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Nf3 Nf5 11.d4=) 8...Bd6 9.Ba3 Nc5 10.d4 Ne4 11.Ne4=; B) 7...Bd6 8.Qh5 (8.Be2 Ne7 9.Bh5 g6 10.Be2 0-0 11.Nf3=; 8.Nf3 Ne7 9.Be2 0-0 10.0-0 a6 11.ba6=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Qa1 Qb6 11.Nf3=; 8.d4 Ne7 9.de5 fe5 10.Nf3 0-0 11.Ng5=) 8...g6 9.Qf3 Bc5 10.Be2 Nh6 11.e4=; C) 7...Ne7 8.Nf3 (8.Ba3 a6 9.Nf3 Nf5 10.ba6 ba6 11.Bf8=; 8.Be2 Nf5 9.Nf3 e4 10.Ng1 Bd6 11.Bg4=; 8.Bd3 Qb6 9.Be2 Ng6 10.Bg4 Bb4 11.Na4=; 8.f4 Nf5 9.Nh3 Bd6 10.Be2 0-0 11.0-0=) 8...Nf5 9.Be2 e4 10.Ng1 Bd6 11.Bg4=; D) 7...Be7 8.d4 (8.Nf3 Nh6 9.Be2 0-0 10.0-0 Nf5 11.e4=; 8.Be2 Nh6 9.Nf3 0-0 10.0-0 a6 11.d4=; 8.Qh5 g6 9.Qf3 Nd7 10.h3 Nb6 11.Ba3=; 8.Qf3 Nh6 9.e4 d4 10.Nd5 Bd5 11.ed5=) 8...Qd6 9.Be2 e4 10.Qd2 Nd7 11.f3=; E) 7...Nh6 8.d4 (8.Nf3 Bd6 9.Be2 0-0 10.0-0 a6 11.Re1=; 8.Qh5 g6 9.Qf3 Nf5 10.g4 Nh6 11.Bg2=; 8.f4 Bd6 9.Qh5 Bf7 10.Qf3 e4 11.Qh3=; 8.Be2 Bd6 9.Nf3 0-0 10.0-0 a6 11.ba6=) 8...e4 9.Nge2 Bd6 10.Ba3 a6 11.ba6=.

7.Bd3 A) 7...Nd7 8.Be2 (8.Nf3 Bc5 9.Be2 Ne7 10.0-0 Qc7 11.d4=; 8.f4 Bd6 9.f5 Bf7 10.Qg4 Bf8 11.Nc3+=; 8.Nc3 Qb6 9.Nf3 Bb4 10.Be2 Ne7 11.0-0=) 8...Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Bh5=; B) 7...Ne7 8.Nc3 (8.f4 e4 9.Be2 Ng6 10.Bg4 Bg4 11.Qg4=; 8.Nf3 Nf5 9.e4 de4 10.Be4 Nd6 11.Nc3=; 8.Be2 Nf5 9.Nf3 Bd6 10.0-0 a6 11.Re1=; 8.Ne2 Nd7 9.f4 Bg4 10.h3 Bh5 11.g4=) 8...Qb6 9.Be2 Ng6 10.Bg4 Bb4 11.Na4=; C) 7...Bd6 8.Qh5 (8.Ba3 Ne7 9.Qh5 g6 10.Qh4 0-0 11.Nf3=; 8.Nf3 Ne7 9.Nc3 0-0 10.Be2 Qc7 11.Ba3=; 8.Nc3 Ne7 9.Nf3 0-0 10.Be2 a5 11.0-0=) 8...Bf7 9.Qg4 Bf8 10.Nc3 Nd7 11.Ba3=; D) 7...Bc5 8.f4 (8.Qh5 Bf7 9.Qg4 g6 10.Be2 Nd7 11.Nc3=; 8.Ne2 Ne7 9.0-0 0-0 10.Ng3 a6 11.Qh5=; 8.Nc3 Ne7 9.Qh5 Bf7 10.Qh3 Nd7 11.Be2+=; 8.Be2 Ne7 9.d4 Bb4 10.Nd2 e4 11.Ra4=) 8...ef4 9.Qh5 Bf7 10.Qg4 Ne7 11.Qg7=; E) 7...Nh6 8.Nc3 (8.Nf3 Bc5 9.Be2 0-0 10.d4 Bb4 11.Bc3=; 8.Ne2 Nd7 9.0-0 Nc5 10.Nc1 Bd6 11.Be2+=; 8.Be2 Bd6 9.Nf3 Nf5 10.0-0 a6 11.Re1=) 8...Bc5 9.Be2 Nf5 10.e4 de4 11.Ne4=.

7.d4 Bb4 8.Nd2 (8.Bc3 Bc3 9.Nc3 Ne7 10.de5 Qc7 11.Qd2=; 8.c3) 8...e4 9.Ne2 Bg4 10.h3 Bh5 11.Ra4 +=.

7.d4 Nd7 8.Be2 (8.Nf3 Bd6 9.Ba3 Bc7 10.de5 fe5 11.Bb4=; 8.de5 fe5 9.Nf3 Bd6 10.Bd3 Ngf6 11.Ng5=; 8.Nd2 Bd6 9.Ba3 Bc7 10.Bd3 e4 11.Be2=) 8...Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Bh5 =.

7.d4 e4 8.Nh3 (8.Nd2 Nh6 9.Ne2 Bd6 10.Ba3 Bc7 11.Ng3=; 8.Ne2 Bd6 9.Ba3 Ne7 10.Bd6 Qd6 11.Nf4=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Ne2 Ng6 11.h4=; 8.Be2 Nh6 9.Ba3 Ba3 10.Ra3 0-0 11.f3=) 8...Bd6 9.Ba3 Ne7 10.Bd6 Qd6 11.Nf4 =.

7.Be2 A) 7...Bd6 8.d4 (8.Bh5 g6 9.Be2 Ne7 10.Nf3 Nf5 11.0-0=; 8.Nf3 Ne7 9.Ba3 a6 10.Nc3 0-0 11.0-0=; 8.Ba3 Ne7 9.Bh5 g6 10.Be2 a6 11.Bd6=; 8.Nc3 Ne7 9.Bh5 g6 10.Be2 0-0 11.Nf3=) 8...Nd7 9.Ba3 Ba3 10.Ra3 Ne7 11.Bh5=; B) 7...a5 8.Bg4 (8.ba6 ba6 9.Nc3 Qb6 10.Rb1 Qc6 11.Bg4=; 8.Nc3 Bb4 9.Bh5 g6 10.Bg4 Bg4 11.Qg4=; 8.d4 e4 9.Ba3 Ba3 10.Ra3 Ne7 11.Bh5=; 8.Nf3 Bd6 9.0-0 Ne7 10.Ba3 0-0 11.d4=) 8...Qb6 9.Nc3 Bf7 10.f4 ef4 11.ef4=; C) 7...Nd7 8.d4 (8.Nc3 Bd6 9.Bh5 g6 10.Be2 Nb6 11.Nf3=; 8.Nf3 Bd6 9.0-0 Ne7 10.d4 e4 11.Nfd2=; 8.Bh5 g6 9.Be2 Ne7 10.Nf3 Qc7 11.0-0=) 8...Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Bh5=; D) 7...Qb6 8.d4 (8.Nf3 Bd6 9.Bc3 a5 10.ba6 ba6 11.Na3=; 8.Nc3 Bd6 9.Nf3 Ne7 10.Ba3 0-0 11.Bd6=; 8.f4 ef4 9.ef4 Bc5 10.Nf3 Ne7 11.Nc3=; 8.Bc3 a5 9.ba6 Na6 10.Nf3 Bd6 11.Na3=) 8...Nd7 9.de5 fe5 10.Nf3 Bb4 11.Nbd2=; E) 7...Nh6 8.Nc3 (8.Nf3 Bd6 9.0-0 0-0 10.Ba3 a6 11.d4=; 8.d4 e4 9.Ba3 Ba3 10.Ra3 0-0 11.Nd2=; 8.Ba3 Ba3 9.Na3 0-0 10.Nf3 Nf5 11.0-0=; 8.Bf3 a6 9.d4 e4 10.Be2 Nf5 11.ba6=) 8...Bd6 9.Nf3 0-0 10.0-0 a6 11.ba6=.

7.Ne2 A) 7...Nd7 8.Nbc3 (8.Nec3 Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Qh5=; 8.Ng3 Bd6 9.Ba3 Ba3 10.Na3 Nh6 11.Be2=) 8...Bb4 9.Ng3 Ne7 10.Qh5 g6 11.Qh6=; B) 7...a6 8.d4 (8.Nec3 Qb6 9.Bd3 Nd7 10.0-0 Nh6 11.f4=; 8.Ng3 Qb6 9.Nc3 Bd6 10.Ba3 Ne7 11.Bd6=; 8.ba6 ba6 9.Nec3 Qb6 10.Ba3 Ba3 11.Ra3=; 8.Nbc3 Qb6 9.Ng3 Bd6 10.Ba3 Ne7 11.Bd6=) 8...Bd6 9.de5 fe5 10.Nf4 Bf7 11.ba6=; C) 7...Qb6 8.Nec3 (8.Ng3 Bd6 9.Ba3 Ba3 10.Na3 Nh6 11.Bd3=; 8.Nbc3 Nd7 9.Ng3 Bd6 10.Be2 Ne7 11.0-0=; 8.Nc1 Bd6 9.Ba3 Ba3 10.Na3 Ne7 11.Be2=) 8...Bd6 9.Qh5 g6 10.Qf3 e4 11.Ne4=; D) 7...Bd6 8.Nec3 (8.Ng3 Ne7 9.Qh5 Bf7 10.Qf3 0-0 11.Nc3+=; 8.d4 Ne7 9.Ba3 0-0 10.Ng3 Ba3 11.Ra3=; 8.f4 Ne7 9.Nbc3 0-0 10.g3 Nd7 11.Bg2+=; 8.Ba3 Ne7 9.Nec3 0-0 10.Bd3 Ba3 11.Ra3+=) 8...Ne7 9.Qh5 Bf7 10.Qf3 0-0 11.Be2=; E) 7...Nh6 8.Ng3 (8.Nec3 Bd6 9.d4 0-0 10.de5 Be5 11.Bd3=; 8.d4 Bd6 9.de5 fe5 10.Nec3 Bb4 11.Ra4=; 8.Nbc3 Bb4 9.Ra4 Be7 10.d4 Nd7 11.Qa1=; 8.g3 Nf5 9.Bg2 Qd7 10.Nbc3 Bb4 11.0-0=) 8...Bd6 9.Be2 0-0 10.0-0 Nd7 11.d4=.

7.Nf3 A) 7...Nh6 8.d4 (8.Be2 Bd6 9.0-0 0-0 10.Ba3 a6 11.d4=; 8.Nc3 Bd6 9.Be2 0-0 10.0-0 a6 11.Re1=; 8.Ba3 Ba3 9.Ra3 0-0 10.Be2 Nf5 11.d4=; 8.Bd3 Nf5 9.e4 de4 10.Be4 Nd6 11.Nc3=) 8...e4 9.Nfd2 Qc7 10.c4 dc4 11.Ne4=; B) 7...Qc7 8.d4 (8.Be2 Bd6 9.Ba3 Ba3 10.Na3 Ne7 11.0-0=; 8.Bc3 Bd6 9.Be2 Ne7 10.Ba5 b6 11.Bc3+=; 8.Nc3 Bd6 9.Be2 Ne7 10.Ba3 0-0 11.0-0=; 8.Bd3 Bc5 9.Be2 Ne7 10.0-0 Bd6 11.Ba3=) 8...Bb4 9.c3 Bd6 10.de5 fe5 11.Ng5+=; C) 7...Bd6 8.d4 (8.Be2 Ne7 9.Nc3 0-0 10.0-0 a6 11.ba6=; 8.Ba3 Ne7 9.Be2 a6 10.Nc3 0-0 11.Bd6=; 8.Nc3 Ne7 9.Be2 0-0 10.0-0 a6 11.ba6=) 8...e4 9.Nfd2 Ne7 10.c4 dc4 11.Ne4=; D) 7...Bb4 8.Be2 (8.Ra4 Bd6 9.Be2 Ne7 10.Ba3 Ba3 11.Na3=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Be2 0-0 11.0-0=; 8.Bc3 Bd6 9.Be2 Ne7 10.0-0 0-0 11.Bb2=; 8.c3 Bd6 9.Be2 Ne7 10.0-0 0-0 11.Ba3=) 8...Ne7 9.0-0 0-0 10.d4 e4 11.Nfd2=; E) 7...Nd7 8.Nc3 (8.Be2 Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.d4=; 8.d4 Bd6 9.Ba3 Ba3 10.Ra3 Ne7 11.Be2=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Be2 0-0 11.0-0=) 8...Nh6 9.Be2 Bb4 10.0-0 0-0 11.Ra4=.

7.Qh5 A) 7...g6 8.Qd1 (8.Qf3 Nh6 9.Nc3 Nf5 10.g4 Nh6 11.Bg2=; 8.Qe2 Nd7 9.Nf3 Nb6 10.Qd1 Qc7 11.Be2=; 8.Qh4 Nd7 9.f4 Qc7 10.Nc3 Nh6 11.Bd3=) 8...Nd7 9.Be2 Ne7 10.Nf3 Qc7 11.d4=; B) 7...Bf7 8.Qe2 (8.Qd1 Bd6 9.d4 Nd7 10.Qg4 g6 11.Qe2=; 8.Qf3 Bd6 9.c4 Ne7 10.d3 a6 11.Nc3+=) 8...Bd6 9.Qg4 Bg6 10.Bd3 Ne7 11.Bg6=.

6.ab5 Ne7

7.Nc3 A) 7...Bf5 8.d4 (8.Nf3 Ng6 9.Be2 d4 10.ed4 ed4 11.Na4=; 8.Be2 d4 9.ed4 ed4 10.Nb1 Ng6 11.Bg4=; 8.d3 a6 9.Nf3 Qd6 10.ba6 Ra6 11.Rb1=; 8.Qh5 Bg6 9.Qd1 d4 10.ed4 ed4 11.Na2=) 8...ed4 9.ed4 Nd7 10.Nf3 Nb6 11.Bd3=; B) 7...Nf5 8.f4 (8.Bd3 Bc5 9.e4 de4 10.Ne4 Bd4 11.Bd4=; 8.Nf3 Be6 9.Be2 e4 10.Ng1 Bd6 11.Bg4=; 8.e4 de4 9.Ne4 Be6 10.Nf3 Be7 11.Be2=; 8.Be2 Be6 9.Nf3 Be7 10.0-0 0-0 11.e4=) 8...Bc5 9.g4 Ne7 10.g5 Ng6 11.gf6=; C) 7...a5 8.Nf3 (8.ba6 ba6 9.Bb5 Kf7 10.Qf3 Bb7 11.Be2=; 8.Be2 Be6 9.Bh5 g6 10.Be2 Nf5 11.Nf3=; 8.Qh5 g6 9.Qf3 Bg7 10.Ba3 Be6 11.Be7=; 8.Bd3 b6 9.f4 e4 10.Be2 Be6 11.Bg4=) 8...Nf5 9.Be2 e4 10.Nd4 Nd4 11.ed4=; D) 7...Ng6 8.Bd3 (8.Nf3 Bf5 9.Be2 d4 10.ed4 ed4 11.Na4=; 8.Qh5 Be6 9.Be2 Bf7 10.Qg4 Bd6 11.Nf3=; 8.Be2 Nh4 9.Bd3 Ng2 10.Kf1 e4 11.Ne4=) 8...Be6 9.Nf3 Kf7 10.Nh4 Ne7 11.Ba3=; E) 7...Be6 8.f4 (8.Nf3 Nf5 9.Be2 e4 10.Nd4 Nd4 11.ed4=; 8.Be2 Nf5 9.Nf3 Be7 10.0-0 0-0 11.e4=; 8.Bd3 Qb6 9.Be2 Nf5 10.Nf3 Be7 11.0-0=; 8.Ba3 a6 9.Nf3 Nf5 10.ba6 ba6 11.Bf8=) 8...Nd7 9.fe5 Ne5 10.Nf3 Nf3 11.Qf3=.

7.d4 Ng6 (7...e4 8.c4 (8.Ba3 a6 9.c4 ab5 10.Be7 Ra1 11.Bd8=; 8.Nd2 Be6 9.Ba3 a6 10.Nh3 Ng6 11.Bf8=; 8.Be2 Nf5 9.Nd2 Nh4 10.g3 Nf5 11.Ba3=; 8.Ne2 Ng6 9.Ng3 Be6 10.Be2 Bb4 11.Nd2=) 8...dc4 9.Bc4 Nf5 10.Nc3 Nd6 11.Bb3=; 7...Qc7 8.de5 (8.Nd2; 8.Be2; 8.Ra2) 8...fe5 9.Nf3 Nd7 10.Be2 Ng6 11.Qd5+=; 7...Nd7 8.de5 (8.Nc3 Nb6 9.de5 fe5 10.Na4 Nd7 11.c4=; 8.Nd2 e4 9.Ba3 Nb6 10.c4 dc4 11.Nc4+=; 8.c4 dc4 9.Bc4 Nb6 10.Bb3 ed4 11.Qd4=; 8.Be2 e4 9.Nd2 Nb6 10.Ba3 a5 11.c4+=) 8...fe5 9.c4 dc4 10.Bc4 Nf5 11.Nf3+=; 7...Qd6 8.de5 (8.Nd2; 8.Ba3; 8.Nf3; 8.Be2) 8...fe5 9.Nf3 Nd7 10.c4 Qe6 11.Nbd2+=) 8.de5 fe5 (worse is 8...Ne5 9.Be5 fe5 10.Qh5 g6 11.Qe5 Kf7 12.Nf3+/–) 9.Qh5 (9.Nf3 Bg4= 10.Be2 Bd6 11.h3=) 9...Qc7 (9...Bb4 10.Bc3 Qd6 11.Bd3+=) 10.Kd1 (10.Nf3 Nd7 11.Bc3=) 10...Nd7 (10...Bd6 11.Bd3=) 11.Nf3 (better is 11.Bd3 e4 12.Be2=) 11...Nb6?? (11...Bd6 12.Bd3 e4 13.Bg7 ed3 14.cd3 Rg8–/+) 12.Be5 (12.Ne5 Qd6 13.Bd3 Nc4 14.Ng6 Nb2 15.Ke2 Bg4 16.Qg4 hg6 17.Bg6 Kd8+-) 12...Qf7 13.Bd4 Be7?? (better is 13...Nc4+-) 14.Bb6 Qf6 (14...a6 15.Nc3+-) 15.Bd4 Qf7 16.Be2 b6 (16...Bf5 17.b6 (worse is 17.Ba7 Bc5+-) 17...a6 18.Bb5 Kf8 19.Nc3+-) 17.Bb6! 0-0 (17...ab6 18.Ra8) 18.Bd4 (18.Ra7 Ra7 19.Ba7 Be6+-) 18...Bd7 (18...Bf5 19.Nc3+-) 19.Kd2 (19.h4 Bf5+-) 19...Bf6 (19...Bf5 20.Nc3+-) 20.Bf6 Qf6 21.Nc3 Be6 (21...Bf5 22.Ra6 Qd8 23.g4+-) 22.Bd3 (22.Ng5 Rfc8 23.Qh7 Kf8 24.Ne6 Qe6+-) 22...Rfd8 (22...Rfe8 23.Nd5 Bd5 24.Bg6 Qg6 25.Qd5 Kh8 26.Ne5+-) 23.Ng5 Qf2 (23...Ne5 24.Qh7 Kf8 25.Ne6 Qe6 26.Ra6 Nc4 27.Ke1+-) 24.Ne2 Qh4 25.Bg6 Qh5 26.Bh5 Bd7 27.Nd4 Rdb8 28.Rhb1 Rb7 29.Bf7 Kf8 30.Bd5 (30.Bd5 Rab8 31.Bb7 Rb7 32.Nh7 Kf7 33.Ng5 Ke8 34.Ne4+-) 1–0. mic (2200) – pblanctranchant (2230), net–chess.com, 2007.

7.Be2 A) 7...Nf5 8.d4 (8.Nf3 Bd6 9.Nc3 e4 10.Ng1 Be6 11.Bg4=; 8.Nc3 Be6 9.Nf3 e4 10.Nd4 Nd4 11.ed4=; 8.Bh5 g6 9.Be2 a6 10.d4 e4 11.Ba3=; 8.Bd3 Be6 9.Nc3 Bc5 10.Nge2 0-0 11.Bf5=) 8...e4 9.Nd2 Bd7 10.Nh3 Bd6 11.Ba3=; B) 7...Bf5 8.Nf3 (8.d4 e4 9.Ba3 a5 10.c4 dc4 11.Bc4=) 8...Ng6 9.0-0 a6 10.Nc3 Bb4 11.Ra4=; C) 7...Qc7 8.Nc3 (8.Nf3 Nf5 9.0-0 Bd6 10.Ba3 0-0 11.Bd6=; 8.d4) 8...Bf5 9.Nf3 a5 10.Ba3 Qd7 11.0-0+=; D) 7...a6 8.Nf3 (8.d4 e4 9.Nd2 Be6 10.Ba3 ab5 11.Bb5=; 8.Nc3 Nf5 9.Nf3 e4 10.Nd4 Nd4 11.ed4=; 8.ba6 ba6 9.d4 Qb6 10.Ra2 Nbc6 11.c4=) 8...Nf5 9.0-0 Bd6 10.Nc3 e4 11.Nd4=; E) 7...Ng6 8.d4 (8.Nf3 Bd6 9.d4 e4 10.Nfd2 f5 11.Ba3=; 8.Nc3 Nh4 9.Bf1 Be6 10.Qh5 Ng6 11.Be2=; 8.Bh5 a6 9.Nf3 Be6 10.d4 e4 11.Nh4=; 8.Ra4 Nd7 9.Nf3 Nb6 10.Ra2 Bd6 11.Ba3=) 8...Be6 9.de5 fe5 10.Nf3 Bb4 11.Nbd2=.

7.Nf3 A) 7...Nf5 8.d4 (8.Be2 Be6 9.0-0 Bd6 10.d3 0-0 11.c4=; 8.Nc3 Be6 9.Be2 e4 10.Nd4 Nd4 11.ed4=; 8.Ra4 Nd7 9.Be2 Nb6 10.Ra1 Bd6 11.0-0=; 8.Na3 Bd6 9.d4 e4 10.Nd2 Qc7 11.Qe2=) 8...e4 9.Nfd2 Be6 10.c4 dc4 11.Bc4=; B) 7...Be6 8.d4 (8.Ba3 Nd7 9.Be2 Nf5 10.Bf8 Nf8 11.d4=; 8.Nc3 Nf5 9.Be2 e4 10.Ng1 Bd6 11.Bg4=; 8.Be2 Nf5 9.0-0 Bd6 10.d3 0-0 11.c4=; 8.Bc3 Nf5 9.Ba5 b6 10.Bc3 Bd6 11.Be2+=) 8...e4 9.Nfd2 Nf5 10.c4 dc4 11.Bc4=; C) 7...Bf5 8.d4 (8.Be2 Ng6 9.0-0 a6 10.Nc3 Bb4 11.Ra4=; 8.Nc3; 8.Ba3; 8.Bc3) 8...e4 9.Nfd2 Be6 10.Ba3 Nd7 11.Be2+=; D) 7...a6 8.c4 (8.Nc3 Bf5 9.Be2 Qd7 10.d4 e4 11.Nd2+=; 8.d4 e4 9.Nfd2 Be6 10.Ba3 Qd7 11.Bc5=; 8.ba6 ba6 9.d4 e4 10.Nfd2 Be6 11.Ba3=; 8.Be2 Nf5 9.0-0 Bd6 10.Nc3 e4 11.Nd4=) 8...dc4 9.Bc4 Nf5 10.ba6 Na6 11.d4+=; E) 7...Ng6 8.d4 (8.Be2 Bd6 9.d4 e4 10.Nfd2 f5 11.Ba3=; 8.Nc3 Be6 9.Bd3 Bd6 10.0-0 Qc7 11.h3=; 8.h3 Bb4 9.Nc3 Be6 10.Ra4 Bd6 11.Qa1=; 8.Ra2 Be6 9.Bd3 Qb6 10.Nh4 Nh4 11.Qh5=) 8...e4 9.Nfd2 Be6 10.c4 dc4 11.Bc4=.

6.ab5 Bf5

7.Bc3 Bd6 8.d4 Ne7 9.de5 fe5 10.Nf3 Nd7 11.Bc4 +=.

7.Nc3 A) 7...Nh6 8.f4 (8.Qh5 Bg6 9.Qf3 e4 10.Qd1 Bc5 11.Ra4+=; 8.Nf3 Bb4 9.Ra4 Bc3 10.Bc3 Qc7 11.Be2=; 8.Qf3 Be6 9.e4 d4 10.Nd5 Nd7 11.Bc4=; 8.Be2) 8...ef4 9.ef4 d4 10.Na4 Be7 11.Qh5+=; B) 7...Be7 8.Qh5 (8.Qf3 Be6 9.Be2 Nh6 10.e4 d4 11.Nd5=; 8.Nf3 Nh6 9.Be2 0-0 10.d4 e4 11.Nd2=; 8.Ra4; 8.d4) 8...g6 9.Qf3 e4 10.Qd1 Nh6 11.d3+=; C) 7...Ne7 8.d4 (8.Nf3 Ng6 9.Be2 d4 10.ed4 ed4 11.Na4=; 8.Be2 d4 9.ed4 ed4 10.Nb1 Ng6 11.Nf3=) 8...e4 9.Ba3 Be6 10.Nge2 Ng6 11.Bf8=; D) 7...Bc5 8.Nf3 (8.Be2 Ne7 9.Nf3 Qc7 10.0-0 Nd7 11.d4=; 8.Nge2 Ne7 9.Ng3 Be6 10.Bd3 0-0 11.0-0=) 8...Ne7 9.d4 ed4 10.Nd4 Bd4 11.Qd4+=; E) 7...Bb4 8.f4 (8.Nge2 Ne7 9.Ng3 Bg6 10.Be2 0-0 11.0-0=; 8.Nf3 Ne7 9.Ra4 Ba5 10.Nd5 Nd5 11.e4=; 8.Be2 Ne7 9.Ra4 a5 10.ba6 Bc3 11.Bc3=; 8.Ra4 Bc3 9.dc3 Be6 10.c4 dc4 11.Bc4=) 8...d4 9.ed4 ed4 10.Na4 Ne7 11.Nf3=.

7.c4 A) 7...Be6 8.cd5 (8.Ra4 Nd7 9.cd5 Bd5 10.Ra1 Bb4 11.Nc3= ; 8.Qb3 a5 9.d4 dc4 10.Bc4 Bc4 11.Qc4=) 8...Qd5 9.Nc3 Qd8 10.Nf3 Bb4 11.Qa4=; B) 7...dc4 8.Bc4 Bd3 9.Qb3 Bc4 10.Qc4 Qd7 11.d4=; C) 7...Ne7 8.c5 (8.Nf3 dc4 9.Bc4 Bd3 10.Qb3 Bc4 11.Qc4= ; 8.Nc3 dc4 9.Bc4 Nd7 10.d4 ed4 11.Qd4=; 8.d4 Nd7 9.Nd2 Bg6 10.Rc1 Rc8 11.Ra1+=) 8...Nd7 9.d4 Ng6 10.Nf3 Be6 11.c6+=; D) 7...a5 8.Nc3 (8.cd5 Qd5 9.Nf3 Qd7 10.d4 ed4 11.Bd4+= ; 8.d4 Bb1 9.Qb1 Bb4 10.Kd1 Ne7 11.c5=; 8.Nf3 dc4 9.Bc4 Bb4 10.Bc3 Bc3 11.Nc3+=; 8.ba6 Ra6 9.Ra6 ba6 10.Nc3 Ne7 11.Qa4=) 8...dc4 9.Bc4 Bb4 10.Nd5 Bd6 11.d4+= ; E) 7...Nh6 8.cd5 (8.Nf3 Nd7 9.cd5 Nb6 10.Nc3 Nd5 11.Nd5= ; 8.d4 dc4 9.Bc4 Nd7 10.Ne2 Rc8 11.Bd5=; 8.Nc3 dc4 9.Bc4 Nd7 10.d4 Nb6 11.Bb3=) 8...Qd5 9.Nc3 Qd8 10.d4 ed4 11.Qd4=.

7.d4 Nd7 (7...e4 8.Nd2 Nh6 9.c4 dc4 10.Bc4 Bb4 11.Ne2+=; 7...Bb4 8.c3 (8.Nd2 Nd7 9.de5 fe5 10.c3 Bd6 11.c4=; 8.Bc3 Bc3 9.Nc3 Ne7 10.de5 fe5 11.Qd2=) 8...Ba5 9.de5 fe5 10.Nf3 Bg4 11.Nbd2+=; 7...Qc7 8.de5 Qc2 9.Qc2 Bc2 10.Nd2 Nd7 11.Ngf3+=; 7...Qc8 8.de5 Qc2 9.Qc2 Bc2 10.Nd2 Nd7 11.ef6+=) 8.de5 (8.Nf3 e4 9.Nfd2 Bd6 10.Ba3 Ba3 11.Na3=; 8.Ne2 Be6 9.Nec3 Bb4 10.Be2 Ne7 11.Ra4=; 8.Nd2 Bb4 9.c3 Ba5 10.Nb3 Bb6 11.c4=; 8.Bc3 e4 9.Ne2 Bd6 10.Ng3 Be6 11.Nh5=) 8...Ne5 9.Ne2 Nc4 10.Bd4 Bb4 11.Bc3 =.

7.Be2 A) 7...Qc8 8.Nc3 (8.Bc3; 8.d3; 8.b6; 8.c3) 8...Qd8 9.Nf3 Bb4 10.Ra4 Bc3 11.Bc3+=; B) 7...Bb4 8.Ra4 (8.Nf3 Ne7 9.Ba3 Ba3 10.Na3 Nd7 11.0-0= ; 8.Bc3 Bd6 9.d4 Ne7 10.de5 fe5 11.Bh5=; 8.Bg4 Bd7 9.Ra4 a5 10.Bh5 g6 11.Be2=; 8.Ba3 Ba3 9.Ra3 Ne7 10.Bh5 g6 11.Be2=) 8...Bd6 9.Nc3 Ne7 10.e4 de4 11.Ne4= ; C) 7...a5 8.d4 (8.Nf3 Bd6 9.Nc3 Ne7 10.0-0 0-0 11.Re1= ; 8.Nc3 Bb4 9.Bh5 g6 10.Be2 Ne7 11.Nf3=; 8.ba6 Na6 9.Bb5 Kf7 10.Nc3 Bb4 11.Nge2=; 8.Bh5 g6 9.Bf3 Bb4 10.Nc3 Ne7 11.Ba3=) 8...e4 9.Nd2 Nd7 10.Ba3 Ne7 11.Ra2=; D) 7...Nd7 8.Nf3 (8.Nc3 Nb6 9.Nf3 Bb4 10.Nh4 Be6 11.Bg4= ; 8.d4 Qc7 9.de5 fe5 10.Qd5 Qc2 11.Qd2=; 8.Bh5 g6 9.Bg4 Bg4 10.Qg4 Nb6 11.Qe6=; 8.Bc3 Bd6 9.Nf3 Ne7 10.0-0 0-0 11.Ba5+=) 8...Bd6 9.d4 Ne7 10.de5 fe5 11.c4=; E) 7...Bd6 8.Nf3 (8.Nc3 Ne7 9.Bh5 g6 10.Bg4 d4 11.ed4= ; 8.Bh5 g6 9.Bg4 Bg4 10.Qg4 Qd7 11.Qa4=; 8.d4 Ne7 9.de5 Be5 10.Be5 fe5 11.Bh5=; 8.Bg4 Bg4 9.Qg4 Qd7 10.Qh5 g6 11.Qe2=) 8...Ne7 9.d4 e4 10.Nfd2 Nd7 11.c4=.

7.Ne2 A) 7...Be6 8.Nec3 (8.d4 Nd7 9.Nbc3 Nb6 10.Nc1 Bd6 11.Ba3=; 8.Ng3 Bd6 9.Be2 Ne7 10.Bh5 g6 11.Bf3=; 8.Nbc3 Bd6 9.Ng3 Ne7 10.Qh5 Bf7 11.Qg4=; 8.f4 Bd6 9.Nbc3 Ne7 10.g3 a6 11.Bg2=) 8...Bd6 9.Qh5 g6 10.Qf3 e4 11.Qd1= ; B) 7...Nd7 8.Ng3 (8.Nbc3 Be6 9.Ng3 Bd6 10.Be2 Ne7 11.0-0=; 8.d4 Be6 9.Nd2 Bb4 10.Ng3 Nh6 11.Bd3=) 8...Be6 9.Be2 Nb6 10.0-0 Nc4 11.Bc3=; C) 7...Bb4 8.Ng3 (8.Ra4 Bd6 9.e4 Be4 10.Nec3 Bg6 11.Nd5= ; 8.Nbc3 Ne7 9.Ng3 Bg6 10.Be2 0-0 11.0-0=; 8.Bc3 Bd6 9.Ng3 Bg6 10.Be2 Ne7 11.0-0=; 8.c3 Bd6 9.Ng3 Bg6 10.c4 dc4 11.Bc4=) 8...Be6 9.Qh5 g6 10.Qh4 Be7 11.Bd3= ; D) 7...Bd6 8.Nbc3 (8.Ng3 Be6 9.Bd3 Nh6 10.0-0 0-0 11.Nc3=; 8.d4 Ne7 9.Nbc3 e4 10.Ba3 0-0 11.Bc5=; 8.Ba3 Ne7 9.Ng3 Bg6 10.Be2 0-0 11.0-0=) 8...Ne7 9.Ng3 Bg6 10.Be2 0-0 11.Bh5=.

7.Nf3 a5 8.Be2 (8.d4 e4 9.Nfd2 Nd7 10.c4 dc4 11.Bc4+=; 8.c4 dc4 9.Bc4 Bb4 10.Bc3 Bc3 11.Nc3+=; 8.ba6 ba6 9.Nh4 Be6 10.Bb5 Nd7 11.Ba6+=; 8.Nc3) 8...Bd6 9.d4 e4 10.Nfd2 Ne7 11.c4 +=.

7.Nf3 Qc7 8.Nc3 Ne7 9.Ba3 Qd8 10.Be2 d4 11.ed4 +=.

7.Nf3 Bd6 8.d4 (8.Ba3 Ne7 9.d4 0-0 10.c4 Ba3 11.Ra3=; 8.Be2 Ne7 9.d4 e4 10.Nfd2 Nd7 11.c4=; 8.Nc3 Ne7 9.Be2 0-0 10.0-0 a6 11.Re1=; 8.c4 Ne7 9.d4 Nd7 10.Nbd2 Bg6 11.cd5=) 8...e4 9.Nfd2 Nd7 10.Ba3 Ba3 11.Na3 =.

7.Nf3 Nd7 8.d4 (8.Nc3 Nb6 9.Be2 Bb4 10.Nh4 Be6 11.Bg4=; 8.Be2 Bd6 9.d4 Ne7 10.de5 fe5 11.c4=; 8.Nh4 Be6 9.Be2 Nh6 10.0-0 Bd6 11.Bh5=) 8...e4 9.Nfd2 Nh6 10.Be2 Qc7 11.c4 =.

7.Nf3 Ne7 8.d4 (8.Be2 Ng6 9.0-0 Bd6 10.Nc3 Be6 11.Re1=; 8.Nc3; 8.Ba3; 8.Bc3) 8...e4 9.Nfd2 Be6 10.Ba3 Nd7 11.Be2 +=.

7.f4 Bd6 8.fe5 (8.Nc3 Ne7 9.fe5 fe5 10.e4 de4 11.Bc4+=; 8.Ne2 Ne7 9.Ng3 Bg6 10.fe5 fe5 11.Nc3+=; 8.Nh3 Ne7 9.g4 Be6 10.g5 Ng6 11.gf6=) 8...fe5 9.Nf3 Nd7 10.Be2 Ngf6 11.Nc3 =.

7.h3 A) 7...Bd6 8.Nf3 (8.d4 Ne7 9.de5 fe5 10.Nf3 Qc7 11.c4+=; 8.Nc3 Ne7 9.Nf3 0-0 10.Be2 Nd7 11.0-0=; 8.Be2 Ne7 9.Nf3 0-0 10.Nc3 Qc7 11.Ba3+=; 8.c4 Ne7 9.d4 Nd7 10.Nd2 Bb4 11.Ngf3=) 8...Ne7 9.d4 e4 10.Nfd2 0-0 11.c4=; B) 7...Bb4 8.Ra4 Bd6 9.e4 Be4 10.Nc3 Bg6 11.Nd5=.

7.Qh5 Bg6 8.Qd1 Bd6 9.d4 Ne7 10.de5 fe5 11.Nf3 =.

6.ab5 Nh6

7.Nc3 Bb4 8.Ra4 (8.Qh5 Nf7 9.Nf3 0-0 10.Be2 Be6 11.0-0=; 8.f4 0-0 9.Ra4 Bg4 10.Qa1 Bc3 11.Bc3=; 8.Nf3 Bg4 9.Be2 0-0 10.Ra4 a5 11.0-0=; 8.Be2 Bf5 9.Ra4 a5 10.ba6 Bc3 11.Bc3=) 8...a5 9.ba6 Bc3 10.Bc3 Na6 11.f4=.

7.Nc3 Be6 8.f4 (8.Be2 Bd6 9.Nf3 0-0 10.0-0 a6 11.Re1=; 8.Qh5 g6 9.Qd1 Nf5 10.Nf3 e4 11.Ng1=; 8.d4 e4 .Nge2 Bd6 10.Ba3 Nf5 11.Bc5=; 8.Nf3 Bd6 9.Be2 0-0 10.0-0 a6 11.Re1=) 8...Bd6 9.Qh5 Bf7 10.Qf3 e4 11.Qh3=.

7.Nc3 Be7 8.Nf3 (8.d4 Be6 9.de5 fe5 10.Nf3 Nf7 11.Bd3=; 8.Be2 0-0 9.Nf3 Be6 10.0-0 a6 11.d4=; 8.Qh5 Nf7 9.Ba3 Ba3 10.Ra3 Be6 11.Nf3=; 8.e4 de4 9.Ne4 Be6 10.d4 ed4 11.Qd4=) 8...Be6 9.Be2 0-0 10.0-0 a6 11.d4=.

7.Nc3 Bf5 8.Qh5 (8.Nf3; 8.Qf3; 8.f4; 8.Be2) 8...Bg6 9.Qf3 e4 10.Qh3 Bf5 11.Qh5+=.

7.Nc3 Nf5 8.f4 (8.Bd3 Bc5 9.e4 de4 10.Ne4 Bd4 11.Bd4=; 8.Nf3 Be6 9.Be2 e4 10.Ng1 Bd6 11.Bg4=; 8.e4 de4 9.Ne4 Be6 10.Nf3 Be7 11.Be2=; 8.Be2 Be6 9.Nf3 e4 10.Ng1 Bd6 11.Bg4=) 8...Bc5 9.g4 Ne7 10.g5 fg5 11.Na4=.

7.d4 Bd6 (7...Nf7 8.de5 (8.Be2; 8.Nf3; 8.Nd2) 8...fe5 9.e4 d4 10.c3 Bc5 11.cd4+=; 7...e4 8.c4 (8.Nd2; 8.Ne2; 8.Be2; 8.Ba3) 8...Bg4 9.Qc2 Be6 10.c5 Nf5 11.Ne2+=; 7...Bb4 8.Bc3 Qd6 9.Ra4 Bc3 10.Nc3 Be6 11.de5+/–; 7...Nd7 8.de5 (8.Nf3; 8.Nd2) 8...Ne5 9.Bd4 Bb4 10.c3 Ba5 11.Ne2+=) 8.de5 Be5 9.Be5 fe5 10.c4 Be6 11.cd5 +=.

7.Be2 A) 7...Bb4 8.Nc3 (8.Nf3 0-0 9.0-0 Be6 10.d4 e4 11.Nfd2=; 8.Ra4 Bd6 9.d4 Nd7 10.de5 Nb6 11.Bh5=; 8.c3 Bd6 9.Qb3 Be7 10.Ba3 Be6 11.Nf3=; 8.Bh5 Nf7 9.Bf7 Kf7 10.Qh5 g6 11.Qh4=) 8...Be6 9.Ra4 Qe7 10.b6 a5 11.Nb5=; B) 7...Bd6 8.d4 (8.Nf3 0-0 9.0-0 Be6 10.Ba3 a6 11.d4=; 8.Nc3 Be6 9.Nf3 0-0 10.0-0 a6 11.Re1=; 8.Bf3 Be6 9.Nc3 Bb4 10.Ra4 Bc3 11.Bc3=; 8.Ba3 0-0 9.Nf3 Be6 10.0-0 Nf5 11.d4=) 8...Be6 9.de5 fe5 10.Nc3 Bb4 11.Nf3=; C) 7...Nf7 8.Nf3 (8.Nc3; 8.d4; 8.Ra4; 8.Ba3) 8...Bd6 9.d4 0-0 10.c4 e4 11.Nfd2=; D) 7...Qc7 8.d4 (8.Nc3 Be6 9.Nf3 Nf5 10.e4 de4 11.Ne4=; 8.Nf3 Be6 9.0-0 Bd6 10.Ba3 Ba3 11.Ra3=; 8.Bf3 Be6 9.Nc3 Qd7 10.Be2 Nf5 11.Nf3=; 8.Bh5 Nf7 9.Nc3 Be6 10.Nge2 Qd7 11.Bf7=) 8...e4 9.c4 dc4 10.Ra4 Bf5 11.Rc4=; E) 7...Be6 8.Nc3 (8.Nf3 Bd6 9.0-0 0-0 10.Ba3 Nf5 11.d4=; 8.d4 e4 9.Ba3 Ba3 10.Ra3 0-0 11.f3=; 8.Ba3 Ba3 9.Ra3 0-0 10.Nf3 Nf5 11.d4=; 8.Bf3 Nf5 9.Nc3 Nh4 10.Ra4 Nf3 11.Nf3+=) 8...Bd6 9.Nf3 0-0 10.0-0 a6 11.Re1=.

7.Nf3 A) 7...Be6 8.d4 (8.Be2 Bd6 9.0-0 0-0 10.Ba3 a6 11.d4=; 8.Nc3; 8.Bd3; 8.Ba3) 8...e4 9.Nfd2 Qc7 10.c4 dc4 11.Ne4+=; B) 7...Nf5 8.d4 (8.Be2 Bd6 9.Nc3 e4 10.Ng1 Be6 11.Bg4=; 8.Nc3 Be6 9.Be2 e4 10.Ng1 Bd6 11.Bg4=; 8.Ra4 Nd7 9.Be2 Nb6 10.Ra2 Bd6 11.0-0=; 8.h3 Be6 9.Nc3 Be7 10.Be2 0-0 11.0-0=) 8...e4 9.Nfd2 Be6 10.c4 dc4 11.Bc4=; C) 7...Bb4 8.Ra4 (8.Ba3 Ba3 9.Na3 Bg4 10.Be2 0-0 11.d4=; 8.Nc3 Bg4 9.Be2 0-0 10.Ra4 a5 11.0-0=; 8.Be2 0-0 9.0-0 a6 10.ba6 ba6 11.d4=; 8.c3 Be7 9.Be2 Be6 10.0-0 0-0 11.Qb3=) 8...Be7 9.Nc3 a6 10.Qa1 Bf5 11.ba6=; D) 7...Bg4 8.Be2 (8.Nc3 Bb4 9.Be2 0-0 10.Ra4 a5 11.0-0=; 8.h3 Be6 9.d4 e4 10.Nfd2 Nf5 11.Be2=) 8...Be7 9.0-0 0-0 10.d4 e4 11.Nfd2=; E) 7...Bd6 8.c4 (8.Nc3 Be6 9.Be2 0-0 10.0-0 a6 11.Re1=; 8.Ba3 0-0 9.d4 Ba3 10.Ra3 Bg4 11.Be2=; 8.h3 0-0 9.Nc3 Be6 10.Be2 Nd7 11.0-0=; 8.Be2 0-0 9.Nc3 Be6 10.0-0 a6 11.ba6=) 8...Bg4 9.d4 e4 10.c5 ef3 11.gf3=.

7.f4 Nf7 8.fe5 fe5 9.Nc3 Be6 10.Nf3 =.

5.a4 c5

6.c4 d4 7.d3 Nd7 8.Nf3 a5 (8...Qa5 9.Qd2 Qd2 10.Nbd2=) 9.Be2 b6 (9...Ne7 10.ed4 cd4 11.0-0=) 10.0-0+= Bb7 11.Ba3 (11.Nfd2 Qc7+=) 11...Bd6 (11...Qc7 12.e4=) 12.ed4+= ed4 13.Nd4 Ne7 (13...Be5!? 14.Ne6 Qe7=) 14.Ne6+- Qb8 15.Ng7 (15.f4 Kf7 16.Bg4 f5 17.Ng5 Ke8 18.Bh5 g6+-) 15...Kf7+= 16.Ne6?? (better 16.Bh5 Ng6 17.Nf5 Bh2 18.Kh1+=) 16...Ke6 (16...Bh2 17.Kh1 Ke6 18.Re1-/+) 17.Bg4 f5 18.Re1 Kf6 (18...Kf7 19.Bh5 Ng6-/+) 19.Bh3?? (better 19.Bb2 Kf7 20.Bf5+=) 19...Be5 (19...Bh2!? 20.Kh1 Be5 21.d4 Bd4 22.Re7-+) 20.Ra2 Bd4 (better 20...Bh2!? 21.Kh1 Be5-/+) 21.Qh5=+ Ng6?? (21...Ne5 22.Bb2 Bb2 23.Rb2=+) 22.Bc1 (better 22.Qf5 Kg7 23.Qd7 Kf8 24.Qd4+-) 22...Kg7?? (22...Nde5 23.Bh6 (worse 23.Qf5 Kg7-/+) 23...Bc8 24.Rae2=) 23.Bf5 (23.Bh6 Kg8 24.Qf5+- (24.Bf5?! Ndf8+-)) 23...Nf6 (23...Re8 24.Rae2 Re2 25.Re2=) 24.Bh6 (24.Qh6 Kf7 25.Be6 Ke7 26.Qg7 Kd6 27.Bf5+-) 24...Kf7+= 25.Qg5 Qd6 (25...Re8 26.Rae2 Re2 27.Re2=) 26.Be6+= Qe6 27.Re6 Ke6 28.Re2 Kf7 (28...Kd6 29.Qg3 Kd7 30.Nd2+=) 29.Nd2 (better 29.Qg3 Rhd8 30.Qc7 Rd7 31.Qb6+-) 29...Rhe8= 30.Re8 Re8 31.h3?? (31.Qg3!?=) 31...Be5 (better 31...Re2 32.Qg3 Be5-+) 32.Ne4?? (better 32.g3-/+) 32...Be4-+ (32...Ne4?! 33.de4 Be4 34.Qh5=) 33.de4 Ne4 (better 33...Bf4 34.Qf5 Bh6-+) 34.Qf5= Nf6 35.Bg5 Bd4 36.Bf6 Bf6 37.Qd7 Re7 38.Qd5 Re6 39.Kh2 Kg7?? (39...Bd4 40.Qb7 Kf6 41.Qh7 Bf2 42.Qb7=) 40.g3 (better 40.Qe6 Bd4 41.Qb6+-) 40...Re7 (40...Kf7 41.f4 Ne7 42.Qd3+=) 41.Qd6 Bd4 (41...Re2 42.h4 (worse 42.Qb6 Rf2 43.Kh1 Bd4+=) 42...Rf2 43.Kh3+-) 42.Qb6 Bf2 (42...Re2 43.Qc7 (worse 43.Qa5 Rf2 44.Kh1 Rf1 45.Kg2 Rf2 46.Kh1 Rf1 47.Kg2 Rf2 48.Kh1=) 43...Kg8 44.h4+- (44.Qa5?! Rf2 45.Kh1 Rf1 46.Kg2 Rf2 47.Kh1 Rf1 48.Kg2 Rf2 49.Kh1=)) 43.Qd6 (better 43.Qa5!? Be1 44.Qd8+-) 43...Bd4+= 44.Qe7?? (better 44.h4 h5 45.b6+=) 44...Ne7-+ 45.g4 (45.b6 Be5 46.b7 Nc6-+) 45...Kf6 (45...Nc8 46.Kg3-+) 46.Kg2 (46.b6 Be5 47.Kg2 Nc8-+) 46...Ke5 (better 46...Nc8!? 47.Kf1-+) 47.Kf3 (47.Kf3 Nc8 48.Ke2-+; 47.Kg3 Nc8 48.g5 Kf5-+). RichardSommer (1930) - Ododo57 (1975), lichess.org, 2020.

6.c4 d4 7.d3 Be6 8.Be2 Nd7=.

6.c4 d4 7.d3 Be6 8.Nf3 Nd7 9.Be2 Bd6 10.Ba3 (10.Nbd2 Nh6=) 10...Ne7 (10...Qe7!?=) 11.ed4+= ed4 12.Nd4 Bf7 (12...cd4 A pinning theme 13.Bd6) 13.Nf3 0-0 14.0-0 Nf5 15.d4 b6 (15...Qc7 16.d5+-) 16.dc5 (16.Bd3 Bg6+-) 16...Nc5 17.g3 (17.Re1 Rc8+-) 17...Qc7 18.Nd4?? (better 18.Nc3+=) 18...Nd4-+ 19.Qd4 (19.Bc5 Bc5 20.Bd3 Rad8-+) 19...Be5 20.Bc5 Bd4 (better 20...bc5 21.Qh4 Ba1-+) 21.Bd4 Rad8 (21...Bc4 22.Rc1+-) 22.Be3 Qe5 (22...Bc4 23.Rc1+-) 23.Na3 Rfe8 24.Rac1? (24.Bf3 Rd3-+) 24...Qe7 (better 24...Qb2 25.Nc2 Bg6-+) 25.Nc2 Bg6 (better 25...Qe4 26.Ne1 Qf5-+) 26.Nd4?? (26.a5 Qc7-+) 26...Qa3 (better 26...Rd4 27.Bd4 Qe2 28.a5-+) 27.Nc6 Rd7 (27...Re3 28.Ra1 Qc5 29.fe3 Qe3 30.Rf2-+) 28.Bf3 Re3 29.fe3 Qe3 30.Kg2?? (30.Kh1 Be4 31.Be4 Qe4 32.Kg1-+) 30...Rd2 31.Kh3 (31.Kh1 Be4 32.Nd4 Qd4 33.Rc3-+) 31…Qh6 (31...Qh6 32.Kg4 f5) 0-1. RichardSommer (2025) - tony_luna_3000 (2005), lichess.org, 2020.

6.c4 d4 7.d3 Be6 8.Nf3 Ne7 9.Be2= Nd7 10.Ba3 (10.0-0 de3 11.fe3 Nf5=) 10...Ng6 11.0-0 b6 12.h3 (12.Nbd2=) 12...Bd6 (better 12...a6!?=) 13.ed4+- ed4 (13...0-0 14.d5 Bf7 15.Nc3+-) 14.Nd4! Bf7 (14...cd4 A pinning theme 15.Bd6) 15.Nc6 (15.Nf5!? Bf8 16.Re1+-) 15...Qc7+- 16.Bf3 Rc8 (16...0-0 17.Nc3+-) 17.Bb2 0-0 18.d4 (better 18.a5 Rce8 19.ab6 ab6 20.Ra7+-) 18...cd4= 19.Qc2 (19.Na3 Nde5 20.Bd4 Nc6 (worse 20...Nc4 21.Nc4 Bc4 22.Re1+-; 20...Bc4?? 21.Nc4 Nc6 22.Nd6 Qd6 23.bc6+-; 20...Nf3?! 21.Qf3 Rfe8 22.a5+=) 21.bc6 Ba3 22.Ra3 Rfd8=) 19...Be5 (19...Nde5 20.Nd4 Bc4 21.Be2=+) 20.Nd2 (20.Bd4 Bd4 21.Nd4=) 20...Nc5 (20...d3 21.Qb1=+) 21.a5 (21.Bd4 Bd4 22.Nd4+=) 21...Nf4 (better 21...d3 22.Qc1 Rfe8=) 22.ab6+- (22.Nd4 Bg6 23.Qd1 Rfd8 24.Bd5 Nd5 25.cd5 Rd5-/+) 22...ab6? (better 22...Qb6 23.Ne7 Kh8 24.Nc8 Rc8+-) 23.Ra7 (23.Bd4?! Bd4 24.Nd4 Bg6+-; 23.Nd4 Bg6 24.Qc1 Ncd3-+) 23...Qd6 Black intends d3 (23...Nb7 24.Ne5 fe5 25.Bb7 Qb8 26.Bc8 Qa7+-) 24.Ne7 Kh8 25.Nc8 Rc8 (25...Qe6 26.Bg4 d3+-) 26.Ne4 (better 26.Rf7 Qe6 27.Bg4 Qf7 28.Bc8+-) 26...Ne4+- 27.Be4 (27.Qe4 Bc4 28.Rc1+-) 27...d3? Exerts pressure on the backward pawn (27...Bc4 A) worse 28.Bh7 d3 29.Bd3 Qd3 (29...Bd3?? 30.Qc8 Kh7 31.Qg4+-; 29...Nd3?! 30.Be5 Qe5 31.Rd1-/+) 30.Qd3 Bd3 31.Be5 fe5-/+; B) 28.Rc1 Qd8 29.Bf3=) 28.Qb1?? (better 28.Be5 Qe5 29.Bd3+-) 28...Bc4=+ 29.Be5 fe5 (better 29...Qe5 30.Bf3 Qb5 (worse 30...Bb5 31.Qb4=) 31.Qb5 Bb5=) 30.Bh7?? (better 30.Kh2=) 30...Kh7-+ 31.Qd1 (31.Kh2 Qg6 32.Rg1 Ne2-+) 31...Ne2 (31...Qg6!? 32.Qg4 Qg4 33.hg4-+) 32.Kh1 Rf8 (better 32...d2 33.Ra1 Bb5 34.Qb1 Qd3-+) 33.Re1 (33.Ra4 Qd5 34.Kh2 e4-+) 33...Bb5 (better 33...Rf2 34.Re2 Re2-+) 34.Re2 de2 35.Qd6 The mate threat is Qxf8 35...e1Q 36.Kh2 Qf2 (better 36...Rf2 37.Rg7 Kg7 38.Qc7 Rf7 39.Qb6-+) 37.Qe6 (37.Qe5 Qf4 38.Qf4 Rf4-+) 37...Bf1 (37...Qf4!? 38.Kh1 Qg3 39.Ra1-+) 38.Qg4 Threatening mate: Qxg7 38...Bg2 (better 38...Qf4 39.Qf4 Rf4-+) 39.Qg7 1-0. RichardSommer (2115) - Ammine (2105), lichess.org, 2020.

6.c4 d4 7.d3 Be6 8.Nf3 Nh6 9.Nbd2=.

6.c4 d4 7.d3 Be7 8.Nf3 Nh6 9.Be2 Nf5 10.0-0 (10.e4!? Nd6 11.Nbd2=) 10...de3-/+ 11.Qc1 ef2 12.Rf2 Nd4 (12...0-0 13.a5-/+) 13.Nd4=+ ed4 14.Bf3 Be6?? (14...Nd7!?=+) 15.Re2 (better 15.Bb7 Nd7 16.Ba8 Qa8 17.Qf4+-) 15...Qc8?? (better 15...Bc8=) 16.Qe1+- Kf7 (16...Nd7 17.Re6 Ne5 18.Bd5+-) 17.Re6! Qe6 Decoy theme: e6. Do you see the mate threat? 18.Bd5 A pinning theme 18...Qd5 19.cd5 Re8 (19...Rd8 20.Qe6 Kf8+-) 20.Qe6 Kf8 21.d6 Bd8 22.Qd5 Nd7 23.Ba3 (better 23.Qb7 Nb6 24.a5 f5+-) 23...Bb6 24.Qb7 (better 24.Nd2 a6+-) 24...Ne5 (24...Rad8 25.Nd2 Ne5 26.Rd1 Rd6 27.a5+-) 25.a5 (25.d7 Red8 26.a5 Rab8+-) 25...Rab8 (25...Nd3 26.h3 Ba5 27.d7+-) 26.Qd5 (better 26.Qa6 Nd3 27.Nd2 Re2 28.ab6 ab6+-) 26...Bd8 (26...Nd3 27.Nc3! Re5+-) 27.Bc5 Nd3 (27...Nd7 28.Bd4 Ba5 29.Ra5+-) 28.d7 Re7 29.Be7 (29.Ba7?? Re1) 29...Be7 30.Qd4 (better 30.b6 a6 31.Ra4+- (31.Qd4?! Bc5 32.Ra4 Rd8+-)) 30...Bc5+- 31.Qc5 (31.Ra4 Rd8 32.Kf1 Bd4 33.Rd4 Nc5+-) 31...Nc5+= 32.Nc3 Nd7 33.Rb1 Ne5 34.b6 ab6 35.Rb6 Ra8 (35...Rc8 36.Ne4+=) 36.a6 Nc4 (36...Nd7 37.Rc6 Ne5 38.Rd6+=) 37.Rc6 Ne5 38.Re6 Kf7 (38...Nd3 39.Nb5 Nc5 40.Nc7+-) 39.Rb6+- Nd7? (better 39...Kf8 40.Nb5 Nd7+-) 40.Rb7+- Ra6 41.Rd7 Kg6 42.Ne4 Ra1 43.Kf2 Ra2 44.Kf3 Ra4 (44...Ra3 45.Kf4+-) 45.Kf4 (45.Nc5 Ra3 46.Kf4 Ra2+-) 45...f5 (45...Ra2 46.Rd2 Ra4+-) 46.g4 (better 46.Rd6 Kf7 47.Kf5 Ra5 48.Kf4+-) 46...Re4-+ (46...fe4?! 47.Rd6 Kf7 48.Rd7 Kf6 49.g5 Kg6 50.Rd6 Kh5 51.Rd7=) 47.Kg3 Rg4 (47...Rg4 48.Kf2 Rc4-+) 0-1. RichardSommer (2165) - Tobbe326 (2080), lichess.org, 2020.

6.c4 d4 7.d3 Bf5 8.Nf3 Nd7 9.Be2 b6 (9...de3 10.fe3 Qe7 11.Nc3+=) 10.Ba3 (10.0-0 a6+=) 10...Qc7 11.0-0 Bd6 12.h3 (12.a5 ba5 13.Nh4 Bg6=) 12...g5 (12...Ne7 13.Nh4=) 13.Nbd2 h5 14.Nb3 (14.a5 g4 15.Nh4 Bh7+=) 14...Ne7= 15.ed4 (15.e4 Bg6=) 15...ed4 16.Nbd4 (better 16.Nfd4!? cd4 17.Bh5 Kd8 18.Bf3=+) 16...cd4-/+ 17.Nd4 Ba3 (17...g4!?-/+) 18.Nf5 Nf5 19.Ra3 (better 19.Bh5 Kd8 20.Bf3=+) 19...Nc5?? (better 19...g4 20.a5 Rc8-/+) 20.Bh5+- Rh5?? (better 20...Kf8 21.Qf3 Kg7 22.Qf5 Rh5+=) 21.Qh5+- Qf7 22.Re1 (better 22.Qf3 0-0-0 23.Qf5 Qe6 24.Qe6 Ne6+-) 22...Kd7 (22...Ne7 23.Qf3 Rd8+-) 23.Qf7 (23.Qf7 Ne7 24.Qe7 Kc8 25.Qe8 Kc7 26.Qc6 Kd8 27.Re8) 1-0. RichardSommer (1945) - THAPLER (1950), lichess.org, 2020.

6.c4 d4 7.ed4 cd4 8.d3 Qa5 9.Nd2 Bb4 10.Qh5N White gets the initiative g6 11.Qd1 Bd2 (11...Bf5 12.Ba3=+) 12.Qd2= Qd2 13.Kd2 Ne7 (13...g5 14.Re1 Ne7 15.Nf3=) 14.Nf3 (14.f4 a6+=) 14...Bg4 (14...Nd7 15.Ba3 Nf8 16.Re1=) 15.Be2 Nd7 (better 15...Bf5!?=) 16.Nd4!+- Be2 (16...ed4 17.Bg4) 17.Ne2 (worse 17.Ke2 ed4 18.Bd4 Nf5-/+) 17...a6 (17...0-0-0 18.Rhe1+-) 18.Rhe1 Kf7 19.d4 ab5 20.ab5 Ra1 21.Ra1 ed4 22.Bd4 Nf5 23.Bc3 (23.Ra7!? Nd6 24.Kd3+-) 23...Nc5 (23...Rc8 24.Ra7 Nd6 25.Nd4=) 24.Ra7 Rd8 (24...Nd6!?+=) 25.Kc2+- Re8 (25...Nd6 26.Bb4 Rc8 27.Nd4+-) 26.Nf4 Nh4? (better 26...Nd6 27.f3 Rc8+-) 27.g3 (27.Bd4 Re4 28.Kc3 Na4 29.Ra4 Rf4+-) 27...Nf3 28.Nd5?? (better 28.Nd3 Ne4 29.Rb7 Re7 30.Re7 Ke7 31.c5+-) 28...Re2 (28...Re4 29.Ne3+- (worse 29.Nf6 Rc4 30.Kb2 Na4 31.Ra4 Ra4=+)) 29.Kd1 Re4 30.Bf6 (30.Bb4 Rc4 31.Bc5 Rc5 32.Rb7 Ke6 33.Nc7 Kd6 34.Ne8 Ke6+-) 30...Re1 (better 30...Nh2!? 31.Bg5 Rd4 32.Ke2 Rc4+-) 31.Kc2+- Re2 32.Kc3 Ne4?? (better 32...Nd2+-) 33.Kd3 Re1 34.Bh4 (better 34.Rb7 Kg8 35.Bd4 Nd4 36.Kd4 Nf2 37.Nf6 Kf8 38.b6 Rd1 39.Ke3+-) 34...Nc5+= 35.Kc3 Nh4 (better 35...g5!?+=) 36.gh4+- Rh1? (better 36...Ke6 37.Nf4 Kd6+-) 37.Kb4 (37.Kd4 Ne6 38.Ke5 Nc5+-) 37...Nd3 38.Kc3?? (38.Ka5 Ra1 39.Kb6 Rc1 40.Rb7 Ke6 41.Re7 Kd6+-) 38...Nc5 39.Kd4 Ne6 40.Ke4 (better 40.Ke5!? Nc5 41.Nc3 Kf8+-) 40...Nc5 41.Kf3 (41.Kf3 Rh2 42.Kg3+-; better 41.Ke5!? Rh2 42.Kd6 Ne4 43.Kc7 Rh4 44.Rb7+-) 1-0. aravind555 (1660) – amsantosr, lichess.org, 2018.

6.d4 cd4 7.ed4 e4 8.c4 f5 9.c5 Nf6 10.Nh3 g6 (10...b6 11.c6=) 11.Be2+= Bg7 12.0-0 Be6 13.Nf4 Bf7 14.a5 0-0 15.Re1 g5 16.Nh3 h6 17.Qd2 f4 18.Ba3 (18.Ra3 Be6=) 18...Re8 19.a6 ba6 20.ba6 Qd7 21.Nc3 f3 22.Bf1 fg2 23.Kg2 Nc6 24.Ng1 Ng4 25.h3? (25.Nb5 Rf8+=) 25...Nf6 (better is 25...Nd4!? 26.Rad1 Qf5–+) 26.Nb5 Rf8 27.Rab1 Nh5 28.Bb2 Nf4 29.Kh2 Be6 30.Nd6 Rf7 (better is 30...Rab8+=) 31.Nf7+/– Qf7 32.Bc3 Rf8 33.Rb7 Qg6 34.Bb5 Bf5 (34...Bc8 35.Rc7 Nb8 36.Ra7 Ba6 37.Ba6 Na6 38.f3+/–) 35.Bc6+- Qc6 36.Ra7 Bc8 (36...Nd3 37.Ra1+-) 37.Re4 Qg6 (37...Ba6 38.Ree7 Bf6 39.Rh7+-) 38.Ree7 Bf6 39.Re1 Qf5 40.Qe3 h5 (40...Nd3 41.Re2+-) 41.Ra1 h4 (41...g4 42.Ra3+-) 42.Ra8 g4 (42...Nh5 43.a7 Bd8 44.Kg2 Nf4 45.Kh1+-) 43.a7 Nh3 44.Rc8! (44.Rc8 Rc8 45.Nh3 gh3 46.a8Q Ra8 47.Ra8 Kh7 48.Ra7 Bg7 49.Qe5 Qf2 50.Kh3 Qf3 51.Kh4 Qf2 52.Qg3 Qf6 53.Kg4 Qe6 54.Kf3 Qe4 55.Kf2 Qc2 56.Kg1 Qd1 57.Kh2 Qe2 58.Qg2 Qh5 59.Qh3+-) 1–0. b4_player (2220) – Raspoutine (2255), GameColony.com, 2003.

6.Qh5 g6 7.Qd1 Bd6 8.Nf3 Ne7 9.d3 0-0 10.Nbd2 b6 11.e4 Bb7 12.c3 (12.Be2 a6=) 12...Nd7 13.Qb3 (13.Be2 a6=) 13...Kh8 (13...c4 14.Qc2-/+) 14.Be2 f5 (better 14...c4 15.Qc2 Nc5=+) 15.h4? (better 15.ed5!? Nd5 16.Nc4=) 15...fe4 (15...c4 16.dc4 de4 17.Nh2-+) 16.de4-/+ de4 17.Ng5 Bd5 (17...e3 18.fe3 Bg2 19.Rg1=) 18.Qc2 The pressure on the isolated pawn grows (better 18.Bc4 Nf6 19.Bd5 Ned5 20.Ne6+= (worse 20.Nge4 Nf4=+)) 18...e3=+ 19.fe3 Nf5 20.0-0-0?? (20.Qd3 Bg2 21.Rg1=) 20...Ng3?? (better 20...Ne3 21.Qd3 Nd1 22.Rd1 Nf6-/+) 21.Bf3 (21.Bc4!? Bc4 22.Nc4 Nh1 23.Nd6+=) 21...Bf3=+ (worse 21...Nh1 22.Bd5 Nf2 23.Nc4 Nd1 24.Nd6+=) 22.Ndf3 Nh1 23.Rd6 Qe7 (better 23...Qe8!?=) 24.Qd1+/- Nf2? (24...Rad8 25.Re6 Qg7 26.Qh1 Kg8+-) 25.Rd7+- Rad8 (25...Nd1 26.Re7 Ne3 27.Ne5 Kg8+-) 26.Rd8 (better 26.Re7 Rd1 27.Kc2+-) 26...Rd8?? (26...Nd1 27.Rd1 Kg8 28.c4+-) 27.Qe2 (better 27.Qd8! Qd8 28.Nf7 Kg7 29.Nd8+-) 27...Nd3+/- 28.Kc2 (28.Kb1+/-) 28...Nb2? (better 28...h6!? 29.Nh3 a6 30.ba6 e4=) 29.Kb2+- e4 (29...Rf8 30.Qc4 h6 31.Ne4+-) 30.Nd2 (30.Ne5 Rf8 31.Nc6 Qf6+-) 30...Qe5?? (better 30...h6 31.Nge4 Qh4+-) 31.Nf7 (31.Nf7 Kg7 32.Ne5+-) 1-0. bjoernsen (2290) - GrezaM (2190), Rated Blitz game, lichess.org, 2016.

5.a4 Bc5

6.Na3 Be6 (6...Ne7 7.Nf3+=) 7.c4 (7.Nf3 Qa5+=) 7...cb5 (7...Ba3 8.Ba3 dc4 9.Rb1–/+) 8.ab5 (8.cd5 Bd5 9.Bb5 Nc6+=) 8...Nd7 (8...Ne7 9.Qh5 g6 10.Qf3+=) 9.Qc2 (9.cd5 Bd5 10.Ne2 Rc8+=) 9...Rc8 (9...Nb6+=) 10.d4 (10.Nf3 dc4 11.Nc4 Ne7+=) 10...ed4 (10...Bb4 11.Bc3 Qa5 12.Bb4 Qb4 13.Qd2 Qd2 14.Kd2 ed4 15.ed4 dc4 16.Nb1+=) 11.ed4 Bb4 12.Bc3 Bc3 (12...Qa5! 13.Bb4 Qb4 14.Kd1 Kf7+=) 13.Qc3= dc4 (better is 13...Nh6=) 14.Bc4?? (better is 14.Nc4 Nb6 15.Qe3=) 14...Nb6?? (14...Qe7 15.Kf1 Nb6 16.d5 Bd5 17.Re1–+) 15.d5?? (better is 15.Qe3 Nc4 16.Qe6 Qe7 17.Qe7 Ke7 18.Nc4 Rc4 19.Ra7 Rd4 20.Rb7 Kd6 21.Ne2+-) 15...Bd5 16.Qe3 Qe7 17.Qe7 Ne7 18.Bd5 Ned5 19.Nf3 Kf7–+ 20.0-0 Rhe8 21.Rac1 Rc1 22.Rc1 Re2 23.h3 Ra2 24.Nc4 Nc4 25.Rc4 Rb2 26.Rc5 Ke6 27.Nd4 Kd6 28.Rc1 a5 29.ba6+= ba6 30.Ra1 Kc5–/+ 31.Nf3 Kb6 32.Rd1 Nb4 33.Rd7–/+ a5 34.Rg7 a4 35.Rh7 a3 36.Rh8 a2 37.Ra8 Na6 0–1. chessleon – wilierescape (2125), net–chess.com, 2006.

6.c4 d4 7.Bd3 (7.ed4 Bd4 8.Bd4 Qd4=) 7...Ne7 (7...f5 8.f4+=) 8.Ne2 (8.Nf3 Bg4=) 8...Nf5 (8...Bf5 9.Bf5 Nf5 10.0-0=) 9.Bf5 (9.0-0 0-0=) 9...Bf5 10.Ng3 (10.ed4 ed4 11.0-0 0-0=) 10...Qd7 (10...Bg6 11.e4+=) 11.0-0 (11.Nf5 Qf5 12.ed4 ed4=) 11...Bd3+= 12.Re1 (12.Qh5 g6 13.Qh4 A) worse is 13...Bc4 14.Qf6 Rf8 15.Qe5 Qe7 16.Qe7 Be7 17.bc6 (17.Bd4?! Bf1 18.Kf1 a6=) 17...Nc6 18.Rc1+=; B) 13...Qf7+=) 12...Bc4 (12...de3 13.de3 Bc4 14.bc6 bc6 15.Qc2+=) 13.Qc2 (better is 13.Ne4!? b6 14.d3+=) 13...cb5–/+ 14.d3 de3 15.fe3? (15.Rd1 Qe6 16.dc4 Qc4 17.Qc4 ef2 18.Kf1 bc4 19.Nd2+=) 15...Qd3–+ 16.Qd3 (16.Qf2 ba4 17.Nc3 Bb3 18.Na4 Ba4 19.Ra4 Nc6–+) 16...Bd3 17.ab5 Bb5 18.Nc3 Bc4 (18...Bc6 19.Nce4 Be7 20.Ba3–+) 19.Rac1 (19.Nce4 Bf8–+) 19...b6 (better is 19...Bf8!? 20.Nce4 b5 21.Nf5–+) 20.Nce4 Bb4?? (better is 20...Be6 21.Nc5 bc5 22.Rc5 Kf7–+) 21.Rc4= Be1 22.Rc8 Kf7 23.Rh8 h6 24.Ba3 a5 25.Nd6 Ke6 26.Nb5 Kd7 27.Bb2?? Bb4 28.Nf5= Kc6 29.Nc3 Bc5 30.Kf2 Kb7 31.Ng7+/– Nd7 32.Ra8 Ka8 33.Nd5 Kb7 34.Kf3 Kc6 35.e4 a4 36.g4 a3= 37.Ba1 b5+= 38.Nf5 b4 39.Ke2 b3 40.Kd3 b2 41.Bb2= ab2 42.Kc2 Ba3 43.Nh6 Nc5 44.Nf6 Kd6 45.g5 Ke6 46.Nhg4 Nb3 47.Nd5 Nd4 48.Kb1 Nf3 49.Nc3 Ng5= 50.Ka2 Bb4 ½–½. hal1958 – fedeb, playchess.de, 2002.

6.c4 Ne7 7.cd5 cd5 8.Nf3 Bg4 9.Be2 Nd7 10.d4 Bd6 11.de5 fe5 12.0-0 0-0 13.Nbd2 Qe8 (13...Rc8 14.e4=) 14.h3 (14.Nc4 Qb8 15.Nd6 Bf3+/-) 14...Bf3= 15.Nf3 e4 16.Nd4 Qg6 17.Bg4 Ne5 18.Ne6 Rf6 19.Nf4 Exerts pressure on the backward pawn 19...Qg5? (better 19...Qf7=) 20.Nd5+- Nd5 (better 20...Rh6 21.Ne7 Qe7 22.Qd5 Qf7 23.Qe4 Ng4 24.Qg4 Rg6+-) 21.Qd5 Kh8 22.Qb7 (worse 22.Qe4 Ng4 23.Bf6 Nf6 24.Qb7 Re8 25.Qa7 Qe5+-) 22...Raf8 23.Rad1 (23.Qe4 Ng4 24.Qg4 Qg4 25.hg4 Rg6+-) 23...Ng4 (23...h5 24.Be2 Nf3 25.Kh1 Rg6+-) 24.hg4?? (24.Bf6 Bh2 25.Kh1 gf6 26.Qe7+- (26.hg4 Qh4 27.Rfe1 Bg3 28.Kg1 Bf2 29.Kf1 Be1 30.Re1 f5-/+)) 24...Qh4?? (better 24...Qh6 25.Rd6 Rd6+-) 25.g3 (better 25.Rd6 R6f7 26.Rd7+-) 25...Bg3!-+ 26.Bf6 (26.fg3 Qg3 Mate attack) 26…Qh2 0-1. brucepeng (2020) - edmemphis (2065), lichess.org, 2020.

6.d4 Bb4 7.c3 Bd6 =.

6.d4 ed4 7.ed4 Bd6 8.Qh5 g6 9.Qe2 Ne7 10.c4 Bf5 (10...dc4 11.Qe3=+) 11.c5 Bc7 12.g3 (12.g4 Bc8=) 12...Nd7 (12...0-0 13.Nd2=+) 13.Bh3 (better 13.g4 Be4 14.f3 Bb1 15.Rb1=+) 13...h5 (better 13...Kf7=+) 14.Bf5+- gf5 15.Nh3 (15.Nf3 f4+=) 15...Ba5 (15...h4!?+=) 16.Nd2 Bd2 17.Qd2 Nf8 18.Nf4 Qd7 19.0-0 0-0-0 (19...h4+-) 20.b6 (20.bc6!? bc6 21.Qe2+-) 20...a6+= 21.Rfe1 Re8 (21...Neg6 22.Bc3=) 22.Re2 (22.Qe2 h4+=) 22...Neg6 Black intends h4 23.Re8 White terminates the opponent with strong threats 23...Qe8 24.Re1 Qd7 25.Bc1 h4 26.Qe2 hg3 (26...Nf4!? 27.Bf4 Ng6+-) 27.fg3+- Rg8?? (27...Nf4 28.Bf4 (28.gf4?! Kd8=) 28...Ng6 29.Qe6+-) 28.Nh5 (better 28.Qe8 Qe8 29.Re8 Kd7 30.Rb8 Nf4 31.Bf4+-) 28...Qf7?? (better 28...Nh7+-) 29.Qe8 Qe8 30.Re8 Kd7 31.Nf6 1–0. aravind555 – slavonik, lichess.org, 2019.

6.Nf3 Ne7 7.c4 0-0 8.cd5 Nd5 9.d4 (9.e4 Nf4=+) 9...ed4 (9...Bb4 10.Nfd2 ed4 11.Bd4 c5=) 10.Nd4= Bd4 (10...a6 11.Nd2=) 11.Bd4 Bf5 (11...a6!?=) 12.Bc4+= Qa5 13.Nd2 Nd7 14.0-0 Ne5 (14...Be6 15.e4 Nc7 16.Qc2+/-) 15.Be5 fe5 16.e4 Kh8 (16...Be6 17.ed5 cd5 18.Nb3+-) 17.ef5 Nc3 (17...Rad8 18.bc6 Nb6 19.Ra2 bc6 20.Be6+-) 18.Qb3 (18.Qc2 cb5 19.ab5 Qb4+-) 18...Rad8 (18...Nb5 19.ab5 Qd2 20.Rfd1+-) 19.Nf3 e4 (19...Rf5 20.Rfc1 Nd5+-) 20.Nd4 (better 20.Ne5+-) 20...Rd4= 21.Be6 (21.Rac1 Nd5=) 21...Ne2 (worse 21...Na4 22.bc6 b5 23.Rfc1+-; worse 21...cb5 22.ab5 Qb4 23.Qb4 Rb4 24.Ra7 Rb5 25.h4=) 22.Kh1 Nf4 23.Qb2 (23.Qe3 Ne6 24.fe6 Ra4 25.Ra4 Qa4=+) 23...Rd2 (23...Ne6?! 24.fe6 Ra4 25.Rad1=) 24.Qe5 (24.Qa3 Re8 25.Bf7=) 24...Ne6 (better 24...Nd3!? 25.Qg3 cb5 26.ab5 Qb5-+) 25.Qe6 (25.fe6 cb5 26.Rfc1+- (26.Qb5?! Qb5 27.ab5 Rb2+=)) 25...cb5=+ 26.Qe4 ba4 27.Ra4 Qf5 28.Qf5 Rf5 29.Ra7 h6 30.Rb7 (30.g4 Rf7=+) 30...Rff2 31.Rg1 Kh7 32.Rb3 h5 33.Rg3 Kh6 34.h3 g5 35.Kh2 Kg6 36.Re1 Rf6 (36...h4 37.Rg4=+) 37.Rg1 (37.Re8 Rf5=) 37...Rf4 38.Re3 Kf5 Black prepares g4 (38...h4 39.Re6 Rf6 40.Rf6 Kf6 41.Rf1 Ke6 42.Re1 Kf5 43.Rf1 Kg6 44.Rf8=+) 39.Rc3 (39.Rge1 Rff2 40.Re5 Kg6 41.Re6 Rf6=) 39...g4 (39...h4 40.Rc8=+) 40.Rc5= Ke4 (40...Kg6 41.Ra1 gh3 42.Ra6 Rf6 43.Rf6 Kf6 44.Kh3=) 41.Rc4 (41.Rh5 gh3 42.Kh3 Rd3 43.g3+/-) 41...Ke3? (41...Rd4 42.Rd4 Kd4 43.Kg3=) 42.Rf4?? (better 42.Re1 Kf2 43.Rf4 Ke1 44.hg4 hg4 45.Rg4+-) 42...Kf4= 43.hg4 hg4 44.Rf1 Kg5 45.Kg3 Rd3 46.Kh2 Kh4 47.Kh1 (47.Rf4 Rd1=+) 47…Rd2 0-1. brucepeng (2000) - Parsadan (2045), lichess.org, 2020.

6.Nf3 Bf5 7.Be2 a6 8.0-0 Ne7 9.d4 Bd6 10.c4 0-0? (better is 10...e4 11.Nh4 Qc7=) 11.c5+/– Bc7 12.b6 Bb6 13.cb6 Qb6 14.Qc1 e4 15.Nfd2 Nd7 16.Ba3 Rfe8 17.Nc3 Qc7?? (17...Be6 18.a5 Qc7 19.Qc2+-) 18.Nb3 (18.Be7 Re7 19.Nd5 Qd6 20.Ne7 Qe7+-) 18...b6?? (better is 18...Be6+-) 19.Be7 Re7 20.Qd1 (better is 20.Nd5 Qd8 21.Ne7 Qe7 22.Qc6+-) 20...Re6 21.Bg4 Bg4 22.Qg4 Qd6 23.Ne2 Rf8 24.Nf4 f5 25.Qe2 Rh6 26.Qa6 g5 27.Nh3 g4 28.Nf4 Nf6 29.Qb6 g3 30.fg3 Ng4 31.h3 Ne3 32.Rf2?? Kh8?? 33.Qc5+- Qb8 34.Na5 Qc8 35.Re2 Ng2 36.Kg2 Rg8 37.Qe7 Rg7 38.Qe5 Qa6 39.Rb1 (39…Qa8 40.Rb8 Qb8 41.Qb8 Rg8 42.Qe5 Rf6 43.Qf6 Rg7 44.Ne6 f4 45.Qg7) 1–0. hal1958 – JTM, playchess.de, 2003.

6.Nf3 Bg4 7.Be2 Ne7 8.0-0 0-0 9.c4 (9.d4!? Bf3 10.Bf3= (worse is 10.dc5 Be2 11.Qe2 Nd7+=)) 9...Bf3+= 10.Bf3 dc4 (10...e4 11.Be2=) 11.Nc3 (11.Be2 Kh8=) 11...Nd5 (11...Qd7 12.Qc2 Qd3 13.Rfc1 Qc2 14.Rc2+=) 12.Bd5 (better is 12.Qe2 Nc3 13.Qc4 Nd5 14.bc6 bc6 15.Qc5+/–) 12...cd5+= 13.d3 d4 (13...f5 14.a5 a6 15.Na4=) 14.ed4+= ed4 (14...Qd4!? 15.dc4 Qc4+=) 15.Ne4= c3 (15...Be7 16.dc4 f5 17.Ng3+=) 16.Nc5 cb2 17.Qb3 Kh8 (17...Rf7 18.Qb2 Qd5 19.Rac1+=) 18.Qb2 Re8 (18...Qd5 19.Rfc1 Nd7 20.Qb3 Qb3 21.Nb3+/–) 19.Rfe1 (worse is 19.Nb7 Qc7–/+) 19...b6? (better is 19...Re5!? 20.Nb3 Nd7+/–) 20.Nb7 Qd7 21.Re8 (21.Qd4 a6+- (21...Qd4?? 22.Re8)) 21...Qe8 22.Nd6 Qe6 23.Qd4 Nd7 24.Ne4 Re8 25.Ng3 (25.f4 Qg4+/–) 25...Nc5 26.Qc4 Qe7 (26...Qc4 27.dc4 Rd8 28.h3+/–) 27.h3 (27.d4 Nb7+/–) 27...Qe5 (27...f5!?+/–) 28.d4+- Qe6 29.Qe6 Ne6 (29...Re6?? 30.Rc1+-) 30.d5 (30.Re1 Nc7 31.Re8 Ne8+-) 30...Nc5 31.Nf5 Re4 (31...g6 32.Nd6 Re7 33.a5+-) 32.Nd6 (32.a5 Nb3 33.ab6+-) 32...Ra4? (32...Rd4+-) 33.Rd1?? (33.Ra4 Na4 34.Nc8+-) 33...g6 (33...a6 34.ba6 Ra6 35.f4+/–) 34.Nf7 (34.Nc8!?+/–) 34...Kg7+= 35.d6?? (better is 35.Nd8 a6 36.ba6 Ra6 37.Ne6 Ne6 38.de6=) 35...Kf7–/+ 36.d7 Ne6 37.d8Q Nd8 38.Rd8 Re4 39.Rd7 Re7 40.Rd6 f5 41.Rc6 Re5 42.Rc7 Re7 43.Rc6 h6 44.f4 Re4 45.g3 Rb4 46.Rc7 Ke6 47.Ra7 Rb5 48.Kg2 Ra5 49.Rb7 b5 0–1. gtate (1815) – knightmare (2165), net–chess.com, 2002.

5.a4 Bd6=+

6.Ba3 Ne7 7.d4 Bf5 8.Nd2 Ba3 9.Ra3 0-0 10.c4 Re8 11.de5 fe5 12.Ngf3 d4 13.e4 Be6 14.Ne5 Qd6–/+ 15.Qh5 Nd7 16.c5? Qe5 17.Qe5 Ne5 18.f4 Nd7 19.Bc4? Bc4 20.Nc4 Nc5 21.e5 Ne4 22.g3 Rad8 23.Nd6 Rd6 (24.ed6 Nd6 25.bc6 bc6–+; better is 23...Nd6 24.ed6 Nf5 25.Kf2 Nd6 26.Rd3–+) 0–1. Lima,Paulo Sergio (2065) – Di Berardino,Diego Rafael (2020), Vila Velha Cup, 2000.

6.Na3 Be6 7.Nf3 Qe7 8.c4 dc4 9.Nc4 Nd7 10.Nd6 Qd6 11.Ba3 Qc7 12.Be2 Ne7 13.0-0 Nd5 14.d4 e4 15.Nd2 0-0-0? 16.Ne4+- N7b6? 17.Nc5 Bf7? 18.Bg4 Kb8 19.Ne6 Be6 20.Be6 g5? 21.Bc5 Nc3 22.Qb3 Ne4 23.a5 Nc8 24.b6 ab6 25.ab6 Qg7 26.Qa4 Nb6 27.Bb6 (27.Bb6 Rd4 28.Qa8) 1–0. poganinbezdom (1615) – oberleis, internet, 2011.

6.Nc3 A) 6...Nd7 7.Be2 (7.Nf3 Ne7 8.Be2 Qc7 9.bc6 bc6 10.Ba3+=) 7...Ne7 8.Nf3 Qc7 9.bc6 bc6 10.Ba3+=; B) 6...Be6 7.Be2 (7.Nf3 c5 8.e4 d4 9.Nb1 c4 10.Na3+=) 7...c5 8.Bh5 g6 9.Bg4 f5 10.Bf3+=; C) 6...Bf5 7.Nf3 (7.Nge2 Ne7 8.Ng3 Bg6 9.Be2 0-0 10.0-0+=; 7.Be2 Ne7 8.Nf3 0-0 9.0-0 Qc7 10.Ba3+=; 7.bc6 bc6 8.Nge2 Nd7 9.Ng3 Be6 10.Be2+=) 7...Ne7 8.Be2 0-0 9.0-0 Qc7 10.bc6+=; D) 6...Ne7 7.Qh5 g6 8.Qf3 0-0 9.bc6 bc6 10.e4+=.

6.c4 dc4 7.Bc4 cb5 8.ab5 Ne7 9.Nf3 Nd7 10.0-0 (10.d4 e4 11.Nfd2 Nb6+=) 10...Nb6 (10...e4 11.Nd4 Bh2 12.Kh2 Qc7 13.Kg1 Qc4 14.Qh5 Qf7=) 11.Be2 Be6 12.Nc3 0-0 13.d4 ed4 14.Nd4 Bf7 15.Bf3 (15.Ba3+=) 15...Rb8? (better 15...Qc7!? 16.h3 Bh2 17.Kh1 Be5=) 16.Ra7+- Be5 17.Na4 (17.Qc2 Qc7+-) 17...Na4 (17...Qc7!? 18.Nc6 Bh2 19.Kh1 Na4 20.Ne7 Qe7 21.Qa4 Bd6+-) 18.Qa4+- Qb6 19.Ra1 (19.Qa5 Qa5 20.Ra5 Rfd8+-) 19...Nd5 (19...Nc8 20.Ra5+-) 20.Qc2 (20.Qa5 Bc7 21.Qd2 Rbd8+-) 20...Rfc8 21.Qe4 Nb4 (better 21...Rc7+-) 22.Rb7 Rb7 23.Qb7 Qb7 24.Bb7 Rb8 25.Bc6?? (25.Ra8 Ra8 26.Ba8 Nd3+-) 25...Nd3?? (better 25...Nc6 26.Nc6 Bb2=) 26.Ba3 (26.Bc3 g5+-) 26...Bd4 (26...Bc4 27.Rd1+-) 27.ed4 Bc4 28.Rc1 (better 28.Bd6 Rb5 29.Bb5 Bb5 30.d5+-) 28...Nc1= 29.Bc1 Bb5 30.Bb5?? (better 30.Bf4 Rb6 31.Bd5 Kf8 32.Be4=+) 30...Rb5–+ 31.Kf1 Rb1 32.Ke2 Rc1 33.Kf3 (33.Ke3 Kf7–+) 33…Rc2 (33...Rc2 34.Ke3 Kf7–+) 0–1. RichardSommer (2015) – cocoitis (2175), lichess.org, 2020.

6.c4 Qe7 7.d4 ½–½. Schatz,Hans Ullrich – Bomert,Egon (2160), Kassel op, 1999.

6.c4 Bf5 7.Nf3 Ne7 8.d4 (8.Be2 0-0 (8...cb5 9.ab5 dc4 10.Bc4 Nd7 11.Nh4 Bb1=; 8...dc4 9.Bc4 cb5 10.ab5 Nd7 11.Nh4 Bb1=; 8...Be6 9.d4 e4 10.Nfd2 dc4 11.Ne4 cb5+=; 8...Bg4 9.d3 a6 10.Nc3 0-0 11.0-0 Nd7=) 9.0-0 Be6 10.Qc2 Nd7 11.Nc3 dc4=; 8.Nc3 Be6 (8...0-0 9.d4 Qa5 10.Qd2 Nd7 11.de5 Ne5=) 9.cd5 cd5 10.d4 e4 11.Nd2 0-0=) 8...Bb1 (8...e4 9.Nfd2= 0-0 10.c5 Bc7 11.Nc3 Nd7=) 9.Rb1 Bb4 10.Nd2 e4 (10...ed4 11.Bd4 c5=) 11.Be2 (11.Bc1 a5+=) 11...Qa5 12.Bc1 dc4 (12...0-0 13.0-0 f5 14.f3+=) 13.Bc4+/– Nd5 (13...f5 14.Qb3 Bd6 15.0-0+/–) 14.Bd5 (14.bc6 bc6 15.Qg4 Nd7+-) 14...cd5 15.Qb3 (15.Qh5!? Kd8 16.Qd5 Nd7 17.Ke2+/–) 15...Bd2+/– 16.Bd2 Qd8 17.Bb4 (17.0-0 0-0+/–) 17...b6 18.0-0 Kf7 (18...a5 19.Ba3+/–) 19.Rfc1 Qd7? (19...a5 20.Ba3 Ra7 21.Rc3+/–) 20.Rc3 (better is 20.Rc7! Qc7 21.Qd5 Kg6 22.Qe4 (22.Qa8?! Re8+-) 22...Kh6 23.Qa8+-) 20...Qf5 21.Rc7 Nd7 22.Rbc1 h5 (22...Rhd8!?+/–) 23.R1c6+- Kg6 24.Rd6 Rac8 25.Rdc6 (25.Rc8 Rc8 26.Ba3 Rc4+/–) 25...Nb8 (25...Ra8 26.Ba3 Rhd8+-) 26.Rc8 Rc8 27.Rc8 Qc8 28.Qc3 (28.Qd1!?+=) 28...Qc3= 29.Bc3 Kf7 30.Kf1 Ke6 31.Ke2 f5 ½–½. Labahn,Wolfgang – Scholle,R, corr, 1981.

6.d4 e4 7.c4 Nd7?? 8.cd5+/- cd5 9.Be2 (better 9.Qh5!? g6 10.Qd5+/-) 9...Qe7 10.Nh3 Nh6 11.f3?? (11.a5!? f5 12.Nc3+=) 11...Nf7 (11...ef3 12.Bf3 Nb6 13.Nc3 Qe3 14.Qe2 Qe2 15.Ke2-/+) 12.Nf2 0-0 13.f4 f5 14.Nc3 g5 (14...Nf6 15.0-0=) 15.h3 (15.Nd5!? Qe6 16.Bc4 gf4 17.ef4+/-) 15...gf4 16.ef4 Bf4?? (better 16...Nf6 17.0-0 Be6=+) 17.g4?? (better 17.Nd5 Qh4 18.Nf4 Qf4 19.0-0+/-) 17...Bg3 (better 17...Qh4 18.Qb3 e3 19.Nd5 ef2 20.Kf1-+) 18.Rf1?? (better 18.Nd5 Qh4 19.0-0-+) 18...e3-+ 19.Qc2 Bf2 20.Rf2 (20.Kd1 Nf6 21.gf5 Qc7-+) 20...ef2 21.Kf2 fg4 22.hg4 Nfe5 23.Ke3 (23.Kg3 Ng6 24.Rf1 Rf1 25.Bf1-+) 23...Nc4 (23...Qg5) 24.Kd3 Qe3 0-1. TimC (2425) - Killerkaz (2455), Rated Bullet game, lichess.org, 2015.

6.d4 Ne7 7.c4 (7.de5 fe5 8.Qh5 g6 9.Qg5 Bf5 10.Nf3+=; 7.Ba3 Bc7 8.Nf3 Ba5 9.Nfd2 ed4 10.ed4=) 7...ed4 8.Bd4 c5 9.Bc3 Be6 10.Ra2=.

6.d4 Nh6 7.de5 Be5 8.Be5 fe5 9.c4 0-0 10.cd5+=.

6.Nf3 Ne7 7.c4 Be6 8.Qc2 Nd7 9.Be2 Rc8 10.0-0 (10.d3 dc4 11.dc4 Qb6=+) 10...dc4–/+ 11.Bc4?? (better 11.Ba3 Qc7 12.Rc1–/+) 11...cb5–+ 12.ab5 (12.Qd3 Bc4 (12...bc4?! 13.Qd6 Nc5 14.Qd8 Rd8 15.Ba3–+; 12...Rc4?! 13.Qd6 Rc6 14.Qa3–/+) 13.Qd6 Rc5–+) 12...Bc4 13.Qe4 (13.Rc1 Bb5 14.Nc3 Qb6–+) 13…Bf1 (13...Bf1 14.Kf1 Nc5–+) 0–1. RichardSommer (2195) – Meysam017 (2210), lichess.org, 2020.

6.Nf3 Ne7 7.Be2 0-0 8.0-0 Be6 9.d4 e4 10.Nfd2 Nd7 11.c4 Rc8 12.c5 Bb8 13.Nc3 Qc7 14.g3 Ng6 15.Bg4 f5 16.Bh3 Ne7 17.f4 Rf6 18.Rf2 Rh6 19.Bf1 Rf8 20.a5 Nf6 21.b6 Qc8 22.Be2 a6 23.Kg2 Ng4–/+ 24.Bg4 fg4 25.Qe2 Nf5 26.Rh1 Rh3 27.Kg1 Rf6 28.Nd1 Rfh6 29.Rg2 Kh8 30.Nf2 R3h5 31.Ng4 Nd4! 32.Bd4 Bg4 33.Qe1 Kg8 34.Qa1 Qd7 35.Rf2 Rh3 36.Be5 Be5 37.Qe5 Re6 38.Qd4 ½–½. hal1958 – ian371, playchess.de, 2002.

6.Qh5 g6 7.Qd1 Ne7 8.c4 Be6–/+ 9.cd5 Nd5 10.Nc3 b6 (10...0-0 11.Bc4–/+) 11.Nf3 g5 (11...0-0 12.d4 Nc3 13.Bc3=) 12.h3 (12.d4 Nc3 13.Bc3 e4+=) 12...Bb4 (12...a6 13.d4=) 13.Qb3 (13.e4 Nc3 14.dc3 Bd6+=) 13...c5 (better is 13...Bc3!? 14.dc3 Nd7=) 14.Bc4+= Bc3 15.dc3 e4 16.Nh2 a6 (16...g4 17.Rd1 gh3 18.gh3 Qc7 19.Bd5 c4+-) 17.Rd1 ab5 18.ab5 (18.Rd5 Bd5 19.Bd5 ba4 20.Qb5 Nd7 21.Ba8 Qa8+-; < 18.Bd5 Bd5 19.Rd5 Qc7 20.Qb5 Qc6+-) 18...Ra7 (18...Rg8 19.Bd5 Bd5 20.c4+- (< 20.Qd5 Qd5 21.Rd5 Ra2+-)) 19.Bd5 (19.Rd5?! Bd5 20.Bd5 f5+-) 19...c4 (19...Bd5 20.c4 Nd7 21.cd5 Qe7+-) 20.Bc4 (20…Bd7 21.Bf7 Ke7 22.Bh5+-; 20.Be6?! cb3 21.Rd8 Kd8 22.Bb3 Nd7+-) 1–0. Holz auf der Heide,Gerhard – Forchmann,Matthias, Leipzig VfB op 4th, 1997.

6.Qh5 g6 7.Qd1 Ne7 8.d4 0-0 9.de5 fe5 10.Nf3 +=.

6.Qh5 g6 7.Qd1 Ne7 8.Nf3 Bg4 =+.

6.c4 Be6

7.Na3 Ne7 8.bc6 bc6 (8...Nbc6!? 9.Rc1 0-0-/+) 9.cd5=+ Nd5 (9...cd5 10.Nb5=+) 10.Nc4 (10.e4 Nc7=) 10...Bc7 (10...0-0 11.Nf3=+) 11.Nf3 (11.Qh5 Bf7 12.Qg4 0-0=) 11...Nd7 (11...c5 12.Qb1=+) 12.d4 (12.e4 Rb8=) 12...e4 13.Nfd2 f5 14.Be2 (14.Qh5 g6 15.Qh6 Kf7=) 14...0-0 15.0-0 Rb8 16.Ba3 (16.Rb1 Qe7=) 16...Nc3=+ 17.Qe1 Rf6 (17...c5 18.Rc1 Ne2 19.Qe2 cd4 20.ed4=+) 18.g3 (18.Rc1 Nd5=+) 18...g5 (better 18...c5!?-/+) 19.Rc1= Ne2 20.Qe2 Bd5 21.f3 (21.Rb1=) 21...Nf8 (better 21...ef3!? 22.Nf3 Kh8=+) 22.fe4+= fe4 23.Rf6 Qf6 24.Rf1 (24.Qh5 Rd8+=) 24...Qe6= 25.Qh5 Bc4 (25...Ng6 26.Qe2=) 26.Nc4+= Qc4?? (better 26...h6+=) 27.Bf8 (27.Rf8!? Rf8 28.Qg5 Kf7 29.Qf5 Ke8 30.Qe4 Kd7 31.Qe7 Kc8 32.Qf8 Kd7 33.Qf5 Kd8 34.Qh7 Qa4 35.Qg8 Kd7 36.Qg4 Kd8+-) 27...Rf8?? (better 27...Qe6 28.Qg5 Qg6+-) 28.Qg5 (28.Qg5 Kh8 29.Rf8 Qg8 30.Rg8) 1-0. foytik (2290) - dirlic (2290), Rated Classical game, lichess.org.

7.Qb3 Qc7 8.Nc3= d4 (8...Ne7 9.cd5 cd5 10.e4=) 9.Ne4 c5 10.Nd6 Qd6 11.Ba3 (11.ed4 ed4 12.Nf3 Nd7=) 11...b6 (11...Nd7 12.Nf3=+) 12.a5 Nd7 13.g3 (13.Bd3 f5=) 13...Ne7 14.Bg2 Rd8 15.Nf3 0-0 (15...ba5 16.0-0 d3=+) 16.ed4 (16.ab6 de3 17.ba7 ef2 18.Kf2 e4=) 16...ed4 (better 16...e4!? 17.Nh4 Qd4-+) 17.0-0 Ne5 (17...ba5 18.Rfe1=+) 18.d3 N7g6 (18...Bh3 19.Nd2 (worse 19.Bh3 Nf3 20.Kg2 Nd2-+) 19...Bg2 20.Kg2=) 19.Rfe1 Qd7 (19...Nf3 20.Bf3 Ne5 21.Bg2=) 20.Re2 (20.Ne5!? fe5 21.Bc1=) 20...Bg4=+ 21.Ne5 Ne5 22.Re4 Bf5 23.ab6 (23.Re2 Nd3 24.Bc6 Qc7=+) 23...ab6 24.Rae1 (24.Re2 Nd3 (worse 24...Bd3 25.Re5 fe5 26.Bd5 Kh8 27.Qd3+=) 25.Bd5 Kh8=+) 24...Be4-+ 25.Be4 Kh8 26.Bb2 (26.f4!? Ng6 27.Bc6-/+) 26...Rde8-+ 27.Qa4?? (27.Qd1 f5 28.Bh1 f4-+) 27...Qc7 (27...Nd3 28.Bd3 Re1 29.Kg2 Qb7 30.f3-+) 28.Qa6?? (better 28.Qd1-+) 28...f5 (better 28...Nd3!? 29.Bd3 Re1 30.Kg2-+) 29.Bd5 Nf3!! Black intends f4 30.Bf3 Re1 31.Kg2 Re7 (31...g5!? 32.Qa3 Qe5 33.Qb3-+) 32.Bc1 f4! 33.Bf4 (33.Bf4 Qd7 Decoy; 33.gf4 Qd6 Decoy) 33...Rf4?? (better 33...Qa7-/+) 34.Qa8 Rf8 (34...Qd8 35.Qd8 Re8 36.Qe8 Rf8 37.Qf8) 35.Qf8 1-0. ClayPigeons (2135) - ErwinMelendez38 (2095), Rated Bullet game, lichess.org, 2020.

7.Qb3 Qd7 8.d4 e4 9.Nc3 Ne7 10.c5 Bc7 11.a5 a6 (11...cb5 12.Bb5 Nec6 13.Nge2=) 12.b6 Bd8 13.Nge2 f5 (13...Ng6 14.h4=) 14.h4 0-0 15.g3 Qe8 16.Nf4 Bf7 17.g4 White intends h5 (better 17.h5!?+=) 17...fg4-/+ 18.h5 (18.Be2 h5-/+) 18...Nf5 19.Be2 Nh6 (19...g3 20.fg3 Ng3 21.Rh3 Ne2 22.Nce2-/+) 20.0-0-0 (20.Qd1 Bg5 21.Bg4 Bf4 22.ef4 Be6-/+) 20...Nd7 (20...Bg5!?-/+) 21.Rdg1=+ Nf6 22.Qd1 (22.Rh2 Nh5 (worse 22...Bh5 23.Nh5 Nh5 24.Nd5+/-) 23.Nh5 Bh5 24.Ne4 Qe4 25.Rh5 Rf2-+) 22...Qd7 (22...Nh5 23.Nh5 Bh5 24.Rh2-/+) 23.Rh2 Qf5 24.Rhg2 Bh5 25.Nh5 Qh5 26.Rh1 Qf7 27.Rh6 (27.Qg1!?-/+) 27...gh6-+ 28.Bg4 Ng4 29.Qg4 Bg5 30.Ne2 (30.Rh2 Qf3 31.Qg1 Kf7-+) 30...Qf5 (30...Qf3 31.Nf4 Qg4 32.Rg4-+) 31.Nf4 (31.Qg3 Qf3 32.Nf4 Kh8-+) 31...Qg4 32.Rg4 Kf7 33.Nh5 (33.Nh3 Ke7-+) 33...Rg8 34.Kd1 (34.Rg3 Bh4 35.Rh3 Rg1 36.Kd2 Bf2-+) 34...Raf8 (34...Kg6 35.Nf4 Kf5 36.Rg3 Bf4 37.ef4 Rg3 38.fg3-+) 35.Ke2 Ke6 36.Bc3 Bf6 37.Nf4 Kf5 38.Rg8 (38.Rg3 Rg3 39.fg3 h5-+) 38...Rg8 39.Be1 (39.Nh5 Be7-+) 39...Kg4 (39...Bd4 40.Nd5 Bc5 41.Nf4-+) 40.Ne6 (40.Kf1 Bd4! 41.Nd5 Rg5-+ (worse 41...cd5 42.ed4 Kf3 43.c6 bc6 44.Bb4-+)) 40...h5 41.Nf4 h4 42.Kf1 Bg5 (better 42...Bd4 43.Bb4 Bb2-+) 43.Ne6 (43.Ne2 h3-+) 43...Bh6 (43...Kf3 44.Kg1 Ke2 45.Bc3 Be3 46.Kh2 Kf2 47.Be1 Ke1 48.Kh3-+) 44.Kg2 Re8 (44...Kf5!? 45.Kh3 Ke6 46.Kh4 Bg5 47.Kh3-+) 45.Nc7 Re7 (45...h3 46.Kh1 Rg8 47.Ne6-+) 46.Kh2 (46.Bb4 h3 47.Kh2 Rf7-+) 46...Bg5 47.Kg2 h3 48.Kh2 Kf3 49.Kh3 h5 50.Kh2 Ke2 51.f4 (51.Bb4 Kf2 52.Nd5 cd5 53.c6-+) 51...ef3 52.Bg3 f2 53.Bf2 (53.Kh3 f1Q 54.Kh2 Kf3 55.Nd5 Qg2) 53...Kf2 54.e4 (54.Ne6 Re6 55.Kh1 Re4 56.Kh2 Rh4) 54...de4 (54...Re4 55.Nd5 Rh4) 55.d5 cd5 (55...e3 56.Ne6 Re6 57.de6 e2 58.e7 Bf4 59.Kh3 e1Q 60.e8Q Qh1) 56.c6 (56.Nd5 Re5 57.Nc3 e3 58.Nd1 Kf3 59.Nb2 e2 60.Nd3 Bf4 61.Nf4 e1Q 62.c6 Qf2 63.Kh3 Qg3) 56...Bf4 (56...e3 57.Nd5 Re4 58.Nf4 Rf4 59.cb7 Rh4) 57.Kh3-+ Bc7 58.cb7 Bb8 59.Kh4 e3 (59...Re5 60.Kh3 e3 61.Kh4 e2 62.Kh3 e1Q 63.Kh4 Qh1) 60.Kh5 (60.Kg5 e2 61.Kh6 e1Q 62.Kh5 Qg1 63.Kh6 Bf4 64.Kh5 Qg5) 60...e2 61.Kg6 (61.Kh6 e1Q 62.Kh5 Rg7 63.Kh6 Be5 64.b8Q Qh1) 61...e1Q 62.Kf6 (62.Kg5 Rg7 63.Kh6 Be5 64.b8Q Qh1) 62...Qe5 63.Kg6 Rg7 64.Kh6 Qg5 0-1. zembelek (2165) - Serzh1956 (2185), Rated Blitz tournament, lichess.org, 2016.

7.Qb3 Nd7 8.d4 ed4 9.ed4 dc4 10.Bc4 Bc4 11.Qc4 Rc8 +=.

7.Qb3 Nd7 8.d4 Ne7 9.Nf3 0-0 10.Be2 Bf7 11.Nc3 (11.c5 Bb8=) 11...Rc8 12.0-0 dc4 (12...ed4 13.ed4 cb5 14.c5 (worse 14.Qb5 a6 15.Qb3 dc4-/+; 14.cb5?! Re8=) 14...Bc5 15.Nb5=+) 13.Bc4 Nb6 (13...ed4 14.Bf7 Rf7 15.Ne4+=) 14.Bf7+= Rf7 15.de5 fe5? (better 15...Be5 16.Rad1 Qf8+/-) 16.Ng5+- Nbd5? (better 16...Qf8+-) 17.Nf7 Kf7 18.e4 Kf8 (18...Bc5 19.ed5 cd5 20.Ne4+-) 19.ed5 cd5 20.Nd5 Nd5 (20...Ng6 21.Rad1 Qh4 22.b6+-) 21.Qd5 e4 (21...Rc5 22.Qb7 Rc7 23.Qe4+-) 22.Qf5 Kg8 23.g3 (better 23.Rad1 Qf8 24.Qe6 Kh8 25.Qd6 Qd6 26.Rd6+-) 23...Qe7 (23...Bf8 24.Qe4 Qd7 25.Qd4+-) 24.Rae1 (better 24.Qc8 Qf8 25.Qe6 Qf7 26.Qd6+-) 24...Rf8 (24...Re8 25.Bd4+-) 25.Qe4 (25.Qe4 Qe4 26.Re4+-) 1-0. ClayPigeons (2150) - Murkoletta (2085), Rated Bullet game, lichess.org, 2020.

7.Qb3 Ne7 8.Nf3 (8.d4 ed4 9.ed4 0-0 10.c5 Bc7 11.Nf3 Nd7=; 8.cd5 Bd5 (8...cd5 9.d4 Nd7 10.Bd3 Rc8 11.a5 ed4+=) 9.Qc2 Nd7 10.e4 Be6 11.Bc4 Bc4+=; 8.Nc3 Nd7 9.d4 ed4 10.ed4 0-0 11.Bd3 dc4+=) 8...Nd7 9.d4 e4 (9...ed4 10.Nd4 Bf7 11.bc6 bc6=) 10.Nfd2 0-0 (better is 10...f5!?= 11.c5 Bc7=) 11.c5+= Bc7 12.Ne4 Bf7 (12...Ng6 13.Bd3+/–) 13.Ned2 f5 14.f4 (14.Bd3 f4+/–) 14...Re8+= 15.Nf3 (15.Bd3 Ng6 16.Kf2 Qf6+=) 15...Ng6 16.Kd1 (16.Be2 Nh4 17.Kf2 Nf3 18.Bf3 Bh5+=) 16...Nh4 (16...Nf6 17.Ra2=) 17.Ne5 (17.Nbd2 Bh5+=) 17...Be5 (17...Ne5 18.fe5 Qg5 19.g3 Bh5 20.Kc1=) 18.fe5+= Qg5 19.g3 Bh5 20.Kc1 Nf3 21.Nd2 Nf6 (21...Nd2 22.Kd2 Bf3 23.Rg1+=) 22.Bg2 (22.ef6!? Re3 23.Qb4 Qf6 24.bc6 bc6 25.Ra3 Re1 26.Kc2 Nd2 27.Qd2+/– (27.Kd2? Qe7–+)) 22...Nd2+= 23.Kd2 Qg4 24.Rae1 (24.Qd3 Ne4 25.Ke1 Qg6+=) 24...Ne4 25.Kc1 Qg6 26.Rhf1 Qe6 27.Rf4 g5 (27...b6 28.bc6 bc5 29.c7=) 28.Rff1 Rf8 29.Rg1 b6 (29...cb5 30.ab5 (30.Qb5?! b6=) 30...a5 31.g4+/–) 30.g4!+/– Bg4 (30...fg4 31.Be4; 30...Bg4 31.bc6) 31.h3 Bh5 32.Be4 fe4 33.Rg5 Bg6 34.h4 Rf5 35.Reg1 Kh8 36.bc6 Qc6 37.h5! Rg5 38.Rg5 Bf7 39.Kb1 Rg8 40.Rf5 Qd7+= 41.Rf6 Be6 42.Qb5 Rg1 43.Ka2 Qc8 44.c6 Rg3 45.Ba3 Rf3 46.a5 Rf6 47.ef6 Qc7 48.Qb4 Qf7 49.Qe7 Qg8 50.c7 ba5 51.Qd8 a4 52.f7! (52.f7 Bf7 53.h6 Qe8 54.Qf6 Kg8 55.Qg7#) 1–0. Dzieniszewski,Andrzej – Bajgrowicz, Krosno Odrzanskie Poland, 1983.

7.Qc2 Nd7 8.d4 (8.bc6 bc6 9.cd5 cd5=) 8...Nh6 (8...Ne7 9.Nf3=+) 9.Nf3 0-0 (9...cb5 10.c5 Bf5 11.Qb3 ba4 12.Qd5+=) 10.Ba3 Ba3 (10...Bf5 11.Qc3 c5 12.dc5 Nc5 13.Bc5 Bc5 14.cd5=) 11.Na3 (11.Ra3 Bf5 12.Qd1 Bb1 13.Qb1 Qa5 14.Kd1 e4=+) 11...Rc8=+ 12.Qb2 (12.c5 Bg4=+) 12...Qa5 (12...e4 13.bc6 bc6 14.Nd2=+) 13.Nd2 (13.Qd2!? Qd2 14.Nd2=+) 13...ed4–/+ (13...Qa4? 14.Nc2 Qa1 15.Na1+-) 14.Qd4 Nf5 15.Qb2 Ne5 16.Rc1 Qa4 17.Be2 cb5 18.cd5 Rc1 19.Qc1 Rc8 20.Qb2 Bd5 21.0-0 b4 22.Rc1 Rc1 23.Qc1 ba3 24.Bd1 Qb4 25.e4 Be4 26.Bb3 Kf8 27.Ne4 Qb3 28.Nd2 Qb2 29.Qc8 Kf7 30.g4 Ne7 31.Qd8 Qd2! (32.Qd2 Nf3 33.Kf1 Nd2 34.Ke2 Nb1–+) 0–1. Bryan,Jarod J – Butler,Corey, Orono,Maine, 1993.

7.Qc2 Ne7 8.d4 =+.

7.d3 Ne7 8.Nf3 a6 9.Nbd2 Bb4 10.Be2 Qa5 (10...ab5 11.ab5 Ra1 12.Ba1 cb5 13.cb5=+) 11.0-0= 0-0 12.Nb3 (12.c5 A) worse 12...ab5 13.ab5 Bd2 14.Ra5 (14.Qd2?! Qd2 15.Nd2 Nd7+=) 14...Ba5 15.d4+-; B) 12...Nd7 13.Nb3 Qc7=) 12...Qb6 (12...Qc7 13.ba6 Na6 14.Qc2=+) 13.a5 Qd8 14.b6 Nd7 15.Ra4 Bd6 16.d4 White prepares c5 16...e4 17.Nfd2 f5 18.c5 Bb8 19.f3 (19.g3 Ng6=) 19...Ng6 (19...f4 20.ef4 Nf5 21.Qc1–/+) 20.fe4 (20.f4 Qf6=) 20...de4 21.Qc2 (21.Qe1 f4=) 21...Bd5 (21...Qh4 22.h3 Qg3 23.Bc4 Bc4 24.Qc4 Kh8 25.Rf2 Qh2 26.Kf1–+) 22.Bc4 (22.Nc4 Qg5=) 22...Nf6 (22...Qh4 23.g3 Bg3 24.Nb1–+) 23.Rf5 (23.h3 Bc4 24.Nc4 Nd5=+) 23...Ne7 (23...Bh2 24.Kh1=+ (24.Kh2?? Ng4 25.Kg1 Rf5 26.Ne4 Ne3–+)) 24.Rf1 (24.Re5 Bc4 25.Qc4 Ned5=) 24...Ng4=+ 25.Bd5 (better 25.Rf8!? Qf8 26.Ne4=+) 25...Nd5–/+ Threatening mate... how? 26.Ne4?? (better 26.g3 Nde3 27.Qe4 Rf1 28.Nf1–+) 26...Bh2 27.Kh1 Rf1 0–1. retiponziani (1650) – matty722 (1820), ChessWorld.net, 2008.

7.cd5 Bd5 8.Nc3 Ne7 (8...Be6 9.d4 ed4 10.Qd4 Qe7 11.Nf3 a6=) 9.Nd5 cd5 10.Rc1 0-0 11.Nf3 a6 =.

7.Nf3 Ne7 8.cd5 cd5 9.d4 e4 10.Nfd2 0-0 11.Na3 (11.Be2!?=+) 11...Nd7 12.Nc2 f5 13.Ba3 Ba3 14.Ra3 f4 15.Nb4? (15.ef4!? Rc8 16.Be2-/+) 15...Nb6 (better 15...fe3!? 16.fe3 Rc8 17.g3-+) 16.Be2 f3?? (better 16...fe3 17.fe3 Qd6-+) 17.gf3= ef3 18.Bf3 Nc4 19.Nc4 dc4 20.Bb7 Rb8 21.Nc6 (better 21.Be4!? Qd6 22.Nc2=) 21...Qd6 22.Ne7?? (better 22.Nb8 Rb8 23.d5=+) 22...Qe7-+ 23.Bc6 (23.Rc3 Rb7 24.Qc2 Qh4 25.Rc4 Bc4 26.Qc4 Kh8-+) 23...Qa3 24.0-0 Qd6 25.d5 (25.f4-+) 25...Bh3 26.f4 (26.Kh1 c3 27.f4 Bf1 28.Qf1-+) 26...Qg6 27.Kf2 Qg2 28.Ke1 0-1. TimC (2220) - Nimrod64 (2305), Rated Bullet game, lichess.org, 2015.

7.cd5 cd5

8.Ba3 Ne7 9.Nf3 Ba3 10.Ra3 0-0 11.d4 +=.

8.d4 Nd7 9.Nc3 Ne7 10.de5 fe5 11.Nf3 Qa5 +=.

8.Be2 Ne7 9.Nf3 0-0 10.0-0 Nf5 11.Nc3 e4 +=.

8.Nf3 Qa5 9.Bc3 Qc7 10.a5 Ne7 11.b6 Qd8 +=.

8.Nf3 Nd7 9.Be2 a5 10.0-0 (10.Ba3 Qc7 11.d4=) 10...Ne7 11.d4 (11.Ba3=) 11...e4 12.Nfd2 f5 13.Ba3 Nf6 14.Bd6 Qd6 15.Nb3 b6 16.N1d2 (16.Bh5 Bf7 17.Bf7 Kf7=) 16...0-0+= 17.Rc1 Rac8 18.Rc8 Rc8 19.Qa1 f4 20.Rc1 fe3 21.Rc8 Bc8 22.fe3 Bg4 23.Bg4 Ng4 24.Nf1 Nf5 25.Qc3 Nfe3! 26.Ne3? (26.h3 Qf4 27.Qc8 Kf7 28.Qb7 Kg6 29.Qb6 Nf6 30.Nbd2 Nf1 31.Nf1–+) 26...Qh2 27.Kf1 Qf4 28.Ke1 (28.Kg1 Qf2 (28...Qe3?! 29.Qe3 Ne3 30.Na5–+) 29.Kh1 Ne3 (29...Qe3 30.Qc8 Kf7 31.Qg4=) 30.Qc8 Kf7 31.Qc7 Kg6 32.Qd6 Kg5 33.Qe5 Nf5 34.Qd5 e3–+) 28...Qf2 29.Kd1 Ne3 (29...Qe3 30.Qc8 Kf7 31.Qd7 Kf6 32.Qd6 Kg5 33.Qd5 Kh4 34.Kc2 Qd3 35.Kb2–+) 30.Kc1 Qf1 31.Kd2 Nc4 32.Kc2 Qg2 33.Kb1 e3 34.Nc1 Qd2 (34...Qd2 35.Qd2 Na3 36.Kb2 ed2–+) 0–1. Koerner,H – Grachul,H, tt, 1973.

8.Nf3 Nd7 9.Be2 Rc8 10.0-0 Ne7 11.Ba3 Ba3 =.

8.Nf3 Nd7 9.Be2 Ne7 10.0-0 0-0 11.Ba3 +=.

8.Nf3 Ne7 9.Be2 0-0 10.0-0 Nf5 11.d3 =.

8.Nf3 Ne7 9.Be2 Qc7 10.Nc3 0-0 11.Rc1 Qa5 =.

8.Nf3 Bg4 9.Be2 Ne7 10.0-0 0-0 11.d4 Nd7 =.

8.Nf3 Nh6 9.Nc3 Nf5 10.d4 e4 11.Nd2 Bc7 =.

6.c4 Ne7

7.Qb3 0-0 8.Nc3 Be6 9.d4 e4 10.c5 Bc7 11.Ne4 Nd7 12.Nd2 f5 13.Ngf3 Nf6 14.Bd3 Qd7 15.0-0 Ne4 16.Rad1 Rae8 17.Ne5 (17.Qc2 Nd2 18.Rd2 Ng6+/-) 17...Qc8 (better 17...Be5 18.de5 Nc5=) 18.Ndf3+/- g5 (18...Rf6+/-) 19.Be4 (better 19.b6!? ab6 20.cb6+-) 19...de4+/- 20.d5 Bd5 (better 20...Be5 21.Ne5 Nd5+=) 21.Rd5?? (21.Qc3 Qe6 22.Ng4+-) 21...Nd5-/+ (21...cd5 22.Qc3 Qe6 23.Nf7+-) 22.Ng5?? (better 22.Rd1 ef3 23.bc6 Be5 24.cb7-/+) 22...Be5-+ (22...Re5?! 23.Be5 Be5 24.Rd1-+) 23.Be5 Re5 24.Qb2 Qe8 25.Nh3 f4 26.ef4 Nf4 27.Nf4 Rf4 28.bc6 bc6 29.Qd2 (29.Qb3 Rf7-+) 29...e3 30.fe3 Rf1 31.Kf1 Re3 32.Kf2 Re5 33.g4 Qf7 34.Kg3 Qd5 35.Qc3 Qc5 (better 35...Re2 36.h3 Qg2 37.Kh4 Qf2 38.Qg3 Qf6 39.g5 Re4 40.Qg4 Rg4 41.Kg4 Qd4 42.Kf5 Qc5 43.Kf4 Qd6 44.Kf5 Qd7 45.Kf4 Qh3 46.Ke5-+) 36.Qb3 Kg7 37.Qb7 (37.Qb2 Qe3 38.Kg2 Kg6 39.Qc2 Kg5-+) 37...Re7 (better 37...Kh6 38.Qb3 Re3 39.Qe3 Qe3 40.Kg2 Kg5 41.h4 Kh4 42.a5 Qe2 43.Kg1 Kg3 44.g5 Qd1) 38.Qc8 (38.Qb2 Kg6 39.Qb1 Kh6 40.Qd1-+) 38...Re3 (38...Qg1 39.Kh3 Re3 40.Kh4 Qh2 41.Kg5 h6 42.Kf5 Qe5) 39.Kf4 (39.Kh4 Qe7 40.g5 Qf7 41.Qg4 Qf2 42.Qg3 Re4 43.Kh3 Qf1 44.Qg2 Qf5 45.Kg3 Qf4 46.Kh3 Qh4) 39…Qe5 0-1. zembelek (2035) - Pskov_rulit (2085), Rated Blitz game, lichess.org, 2013.

7.Qb3 0-0 8.bc6 bc6 9.d4 –/+.

7.Qb3 0-0 8.d4 Kh8 (8...ed4 9.Bd4 c5 10.Bc3=) 9.Nd2 Be6 10.c5 Bc7 11.Ngf3 e4 12.Ne4? (better 12.Ng1!? Nd7 13.Be2=) 12...de4-+ 13.Qe6 ef3 14.gf3 Qd7 (14...Ba5 15.Kd1-+) 15.Qb3 (15.Qd7 Ba5 16.Kd1 Nd7=+) 15...Qd5 (15...Ba5 16.Kd1-/+) 16.Qd1? (better 16.Qd5!? Nd5 17.Bc4=+) 16...Nd7 (16...Ba5 17.Ke2-+) 17.Rc1 Rae8 18.Bc4 Qh5 19.h4 (19.Be6 Rd8-/+) 19...Nd5-+ 20.Be2?? (20.f4 Ba5 21.Kf1 Qf5-/+) 20...Re7 (better 20...Ba5 21.Kf1 Re3-+) 21.f4 (21.Qd3 Rd8-+) 21...Qg6 22.h5 Qe4 23.Rh4? (better 23.0-0-+) 23...Bf4! 24.Bf3? (24.ef4 g5 Double attack (24...g5 Decoy); 24.Rf4 Nf4 Decoy) 24...Qf5 (better 24...Ne3 25.Be4 Nd1 26.Rf4 Nb2-+) 25.Bd5?? (25.bc6 Ne3! 26.fe3 Be3-+ (26...Re3?! 27.Kf2 Bg5 28.cd7-/+)) 25...Bg5 (better 25...Be3 26.fe3 Re3 (26...cd5?! 27.Qe2=+; 26...Qd5?! 27.Qe2-/+) 27.Qe2 Re2 28.Ke2 cd5-+) 26.Qg4 (26.Qf3 Qf3 27.Bf3 Bh4 28.Ke2-+) 26...Qg4?? (better 26...Qd5 27.Rh3 Qb3-+) 27.Rg4+= cd5 28.c6 bc6 29.Rc6 (better 29.bc6 Be3 30.fe3=) 29...Nb6?? (better 29...Ref7-/+) 30.Ba3+/- Ree8 31.Bf8 Rf8 32.a5 Nc4 33.Ra6 h6 34.Ra7 f5 35.Rg1 f4 36.b6 fe3 37.fe3 Be3 38.Rf1?? (better 38.b7 Bf4 39.Ra8+-) 38...Re8 39.Kd1 Bd4 40.b7?? (better 40.Rf4 Be5 41.Rf3+=) 40...Ba7-+ 41.Rf7 Ne3 (better 41...Na5 42.Rd7-+) 42.Kc1 d4 (42...Kh7!? 43.Rc7 Nc4 44.Rc8 Re1 45.Kc2 Na5 46.Ra8 Nb7 47.Ra7-+) 43.Rd7 (43.Rc7 Rb8-+) 43...Re6 (better 43...Kh7 44.a6-+) 44.Rd8 Kh7 45.b8Q (45.Ra8 Rd6 46.Kd2 d3-+) 45...Bb8 46.Rb8 Re5 0-1. zembelek (2060) - amayak (2075), Rated Blitz game, lichess.org, 2013.

7.Qb3 Nd7 8.d4 ed4 (8...0-0 9.bc6 bc6 10.e4–/+) 9.ed4 (9.Bd4 Nc5 10.Bc5 Bc5 11.cd5 Nd5+=) 9...dc4 (9...0-0 10.Qe3 Nb6 11.c5+/–) 10.Bc4= Nb6 (10...Rb8 11.Bf7 Kf8 12.Nf3=) 11.Bf7 Kf8 12.Bh5 (12.Nc3 Bf5=) 12...Nbd5 13.Nc3 Be6 14.Nge2 (better is 14.bc6!? bc6 15.Qc2+=). Kukel,Imre (2085) – Manik,Mikulas (2410), SVK–chB op Kaskady, 2002.

7.Nc3 0-0 8.Qb3 (8.d4 Qa5 9.Nf3 Bf5 10.Qd2 Nd7 11.de5 Ne5=; 8.cd5 cd5 9.Rc1 Be6 10.Nf3 Nd7 11.Be2 Qe8+=9; 8.Rc1 d4 (8...Be6 9.cd5 cd5 10.d4 Qa5 11.de5 fe5+=; 8...Bf5 9.cd5 cd5 10.Qb3 Be6 11.Ne4 Bc7=) 9.Ne4 c5 10.Qf3 f5 11.Nd6 Qd6+=) 8...Bc7 (better is 8...Be6!?+= 9.Nf3 Rf7 10.Rc1 Nd7 11.d4 Qa5=) 9.cd5+= cd5 10.e4 (10.Ba3!? Bd6 11.Nd5+= Kh8+=) 10...Be6= 11.ed5 (11.Nd5 Bd5=) 11...Nd5?? (11...Bf7 12.Ba3=) 12.Nd5?? (better is 12.Bc4 Nf4 13.Be6 Kh8 14.Bd5+-) 12...Bd5= 13.Bc4 Bc4 14.Qc4 Kh8 15.Ne2 Nd7 16.0-0 Nb6 17.Qc2 Rc8 18.Bc3 (18.a5 Nd5 19.Rfc1 Nb4+=) 18...Nd5+= 19.Rfd1 Bb6 20.Qb2 Qd7 21.a5 Bc7 22.Ng3 Nf4 (22...Rfd8 23.Ne4+=) 23.d4= Qd5 24.f3 Rfd8 25.Rd2 Qc4 26.de5 Nd3 27.Qa3 Be5 (27...fe5 28.Ne4 Qb5 29.Rad1+=) 28.Be5= fe5 (28...Ne5 29.Rd8 Rd8 30.Qe3=) 29.Ne4 (29.Rad1 Qd4 30.Kf1 Rc3+/–) 29...Rd7 (29...Nb4 30.Rd8 Rd8 31.Rc1=) 30.Rad1+= Rcd8 31.Nf2 Nc5?? (better is 31...Qc5 32.Qc5 Nc5 33.Rd7 Rd7+/–) 32.Rd7+- Rd7 (32...Nd7 33.Qe7 Qc7 34.Ng4 Qa5 35.Ne5+-) 33.Rc1 Qb5 (33...Qf4 34.Qc5 Rd8 35.Re1+-) 34.Qc5 (better is 34.Rc5 Qb1 35.Rc1 Qc1 36.Qc1+-) 34...Qc5 35.Rc5 h6 36.Re5 Rc7 37.g4 Kg8 38.Kg2 Kf7 39.Ne4 Rc6 40.Kg3 b6 41.h4 1–0. Bugayev, Nikolai Vasilyevich – Steinitz,Wilhelm, Moscow sim RUS, 1896.

7.d3 0-0–/+ 8.Nd2 Be6 9.Be2 Nd7 (9...Bb4 10.Ngf3–/+) 10.Ngf3+= Qe8 (10...dc4 11.dc4 cb5 12.ab5+=) 11.0-0 Kh8 (11...Qg6 12.d4+=) 12.Nh4 (12.a5 cb5 13.cb5 Qg6=) 12...g5 (12...c5 13.cd5 Nd5 14.Ne4+=) 13.Bh5 (13.Nhf3 g4 14.Nh4 Qh5+=) 13...Bf7 (13...Qd8 14.Nhf3=) 14.Bf7+= Qf7 15.Nhf3 Rg8 (15...Nc5 16.Qe2+=) 16.g3 (16.e4 g4 17.Ne1 f5+=) 16...Rad8 (16...g4 17.Ne1=) 17.Ne1 (17.a5 g4 18.Ne1 cb5 19.cb5 Qe6=) 17...Rg6 (17...g4 18.f4=) 18.Qe2 (18.Qg4 f5 19.Qf3 g4=) 18...Qe6 19.f3 Rh6 20.Rf2 Kg8 21.Nf1 (21.Nc2 f5=) 21...f5 (21...dc4 22.dc4 Nb6 23.bc6 Nc6 24.Rc1 Na4 25.Nd3–+) 22.Rg2 (22.Nd2 Nc5+=) 22...Ng6 (22...dc4 23.dc4 Nb6 24.bc6 bc6 25.Nd2–/+) 23.Nc2 (23.Nd2 Nc5+=) 23...Kf7 (23...dc4 24.dc4 Nc5 25.a5+=) 24.Rb1 (24.cd5 cd5 25.f4 gf4 (25...ef4? 26.Nd4 Qf6 27.Nc6+-) 26.ef4 ef4 27.Qe6 Ke6 28.Nd4 Kf7 29.Nf5 Bc5 30.d4 Bf8 31.Nh6 Bh6+-) 24...Nc5 (24...dc4 25.dc4 Ke8 26.bc6 bc6 27.a5=) 25.a5 (25.bc6 bc6 26.Nb4 dc4 27.dc4 Ne7+=) 25...Ne7 (25...dc4!? 26.dc4 cb5 27.cb5 Ke8=) 26.d4= Nb3 (26...Nd7 27.c5 Bc7 28.b6 ab6 29.cb6+=) 27.de5+= Bc7 28.Nd4 Nd4 29.ed4 dc4 30.bc6 (30.a6 ba6 31.ba6 Bb6+=) 30...Qc6 (30...Nc6 31.Bc3 Nd4 32.Bd4 Rd4 33.Rb7+=) 31.Rc1+= Ba5 32.Rc4 Qd7 (32...Qe6 33.f4 g4 34.Ne3=) 33.Kh1 (33.Qe3 Rc6 34.Rgc2 Rc4 35.Rc4 Qe6+/–) 33...b5= 34.Rc2 Bb6 Pawn d4, live or die! (34...Re6 35.Qe3 h6 36.Rge2=) 35.Rd2 (35.Qe3 Re6 36.Qg5 Bd4+-) 35...a5 (35...Nd5 36.Ne3=) 36.Ne3 (36.Qe3 Rh5 37.Rge2 Qe6=) 36...Nd5+= 37.Qd3 Ne3 38.Qe3 Rg6 39.Qb3 (39.Rge2 Qe6+=) 39...Qd5= 40.Qd3 Ke6 41.Qe2 (41.Rde2 g4 42.Rgf2 a4+= (worse is 42...Bd4 43.Bd4 Qd4 44.Qb5=)) 41...Rc8 (41...g4 42.Rf2=) 42.g4 (42.Rf2 g4=) 42...fg4+= 43.fg4 Rf8 (43...Rc4 44.Qd3+=) 44.h3 (44.Kg1 b4=) 44...Rf4+= 45.Kh2 (better is 45.Qd1+=) 45...Bd4+/– 46.Bd4?? (better is 46.Qd1 Qf3 47.Bd4 Qd1 48.Rd1+-) 46...Rd4–/+ 47.Rd4 Qd4 48.Qa2 Ke5 (48...Qd5 49.Qa5 Qe5 50.Kh1–+) 49.Qa5+= Rb6 (49...Qf4 50.Rg3+=) 50.Qe1 Kf6 51.Rf2 Kg7 52.Qe7 Kh6 53.Qf7 (53.Qf8 Qg7 54.Qc5 Rf6=) 53...Qe5 54.Kg2 Threatening mate... how? 54...Rg6 (54...Qe4 55.Kh2+=) 55.Qf8= Qg7 56.Qc5 (56.Qb8!?=) 56...Qb7+= 57.Kh2 Rc6 (57...Qb8!? 58.Kg2 Re6+=) 58.Qf8= Qg7 59.Qe8 Threatening mate: Qh5 59...Qc7 60.Kg2 Rg6 61.Qb5 ½–½. Holz auf der Heide,Gerhard – Geiling,Christian, Leipzig VfB op 3rd, 1996.

7.d4 0-0 8.Qb3 Be6 9.c5 Bc7 10.Nc3 ed4 11.ed4 Nf5 (11...Ng6!?=+) 12.Nf3= Re8 13.Be2 Nd7 (13...b6 14.0-0=) 14.0-0 Bf7 (14...Ne7 15.Rae1+=) 15.Rfe1 (15.Bd3 Ne7+=) 15...Nf8 16.Rad1 Ng6 17.Bf1 (17.Bd3 Nge7+=) 17...Qd7= 18.Bc1 Ngh4 19.Nh4 Nh4 20.Ne2 (20.Be2 Qf5 21.Qb2 Bh2 22.Kf1 Bg3-+) 20...Nf5= 21.g3 Bh5 22.f3 (better 22.Qd3!?=) 22...Ba5-/+ 23.g4 (better 23.Bd2!? Bd2 24.Rd2-/+) 23...Be1-+ 24.Re1 (24.gh5 Ba5-+) 24...Nd4! 25.Nd4 Re1 26.Bd2 Ra1 (26...Rf1 27.Kf1 Bg6 28.Bf4-+) 27.Bc3? (better 27.bc6 bc6 28.gh5-+) 27...Rc1 28.Qb2 Rc3! 29.Qc3 Bg6 30.h3 Re8 (30...cb5 31.ab5 Qc7 32.Bg2-+) 31.Qd2 (31.f4 f5 32.g5 Qc7 33.bc6 bc6-+ (33...Qf4?! 34.cb7 Qc7 35.c6=)) 31...h5 (31...Qe7 32.bc6 bc6 33.Qc3-+) 32.Kg2 (32.gh5 Bh5 33.f4 Qe7-+) 32...hg4 33.hg4 Kf7 (33...Qe7 34.Qc3 Qc7 35.bc6 bc6 36.Nc6 Qc6 37.Bb5-+) 34.Qf4 (34.Qa5 Ra8-+) 34...Re5 35.Kg3 (35.Qd2 Qc7 36.bc6 bc6-+) 35...Kg8 (35...Qc7 36.bc6 Bd3 37.Nf5 (37.Bd3?? g5 38.Qe5 Qe5 39.Kh3 bc6 40.Nc6 Qe3-+) 37...Bf1 38.cb7 Qc5 39.Qd4-+) 36.Bh3 (36.Kg2 Qc7 37.bc6 bc6-+) 36...Qe8 37.Nf5 (37.Kg2-+) 37...Bf5 38.gf5 Re1 (38...cb5 39.Qb4 Re1 40.Qd4-+) 39.bc6 Qe2 (better 39...bc6 40.Bg2 Qe5 41.Qe5 fe5-+) 40.Kg4?? (better 40.cb7 Rg1 41.Kh4 Qe1 42.Kh5 Qe8 43.Kh4=+) 40...bc6 (40...Rg1 41.Kh5 bc6 42.a5 Qe8 43.Kh4 Qe1 44.Kh5-+) 41.Qb8 Kh7 42.Qg3 Rg1 (better 42...Ra1 43.Kh4 Ra4 44.Bg4 Qe3-+) 43.Kh4 (43.Kh4 Qc4 44.f4 Rg3 45.Kg3 Qc5 46.Bg2-+). zembelek (2095) - insertcoin (2065), Rated Blitz game, lichess.org, 2013.

7.d4 0-0 8.Qb3 Kh8 9.Nc3 Be6 (9...ed4 10.ed4 Nf5 11.Rd1-/+) 10.c5 Bc7 11.Nf3 e4 (11...Bg4 12.Be2=) 12.Nd2 f5 13.h3 (13.Be2 Rf6=) 13...Bf7 (13...Rf6 14.bc6 bc6 15.Rb1=+) 14.g4 (14.Be2!?=) 14...f4=+ 15.bc6 bc6 16.Qb7 Nd7 17.Ba3 (17.Rb1 a5-/+) 17...fe3 18.fe3 Bg3 19.Kd1 Bc7 (19...a5 20.Rb1-/+) 20.h4 (20.Ba6 Nf6-/+) 20...Ba5 (20...Be6 21.Be2-/+) 21.Qb3 (21.Rc1!?-/+) 21...Rb8 22.Qc2 h6 (better 22...Be6 23.Be2 Nf6-+) 23.g5? (23.Be2 Be6=+) 23...h5 (better 23...Nf5 24.Ke1 Ne3-+) 24.Be2 Nf5 25.Rh3? (25.Nf1 Kg8-/+) 25...Bg6 (better 25...Be6!? 26.Nb3 Qc7 27.Na5 Qa5-+) 26.Nf1 Bb4 (26...Qe7 27.Bb2-/+) 27.Bb4=+ Rb4 28.a5 Qb8 29.a6? (better 29.Rb1!?=+) 29...Rb2 (better 29...Nd4!? 30.ed4 Rd4 31.Kc1 Rf1 32.Bf1 Qf4 33.Kb2 Rd2-+) 30.Qa4-/+ Rc8 (better 30...Nd4!? 31.Qd4 Re2 32.Ne2 Rf1 33.Kd2 Nc5 34.Rf1 Nb3 35.Ke1 Nd4 36.ed4 c5 37.dc5 Qb4 38.Kf2 Qc5 39.Kg2 d4-+) 31.Kc1 Rb4 32.Qa2 Rb3 (32...Rf8 33.Qd2=+) 33.Kc2-/+ Qb4?? (better 33...Nd4 34.ed4 e3 35.Kd1 Rc3 36.Re3 Re3 37.Ne3 Qg3-/+) 34.Qb3+- Qb3 (34...Nd4 35.ed4 e3 36.Kb2 Qd4 37.Rd1 (37.Ne3?! Rb8 38.Qb8 Nb8+=) 37...Qc5 38.Qa3 Qb6 39.Ka1+-) 35.Kb3 Rb8 36.Kc2 Kg8 37.Rb1 Rb1 38.Nb1 Kf7 39.Nbd2 Ke6 40.Kc3 Ke7 (40...Nb8 41.Nb3+-) 41.Nb3 (41.Ng3 Ne3 42.Nge4 Nf5+-) 41...Nf8 42.Na5 Kd7 43.Ng3 Ne3 44.Ne4! Nf5 (44...de4 45.Re3 Discovered attack; 44...Be4 45.Re3 Discovered attack) 45.Nd2 (45.Ng3 Ng3 46.Rg3 Ne6+-) 45...Ne6 46.Bd3 Nf4 47.Bf5 Bf5 48.Rf3 (48.Rh2 Nd3+-) 48...Ne2 49.Kb4 (49.Kb2 Be6 50.Rb3 Nd4 51.Rb7 Kc8 52.Ra7 Nb5 53.Rg7 Bd7+-) 49...Bg6 (49...Nd4 50.Rf4 Nc2 51.Kc3 d4 52.Kb2 Ne3+-) 50.Ndb3 Nd4 (50...Be8 51.Re3 Nf4 52.Nc6 Kc6 53.Re8 Nd3 54.Ka5+-) 51.Nd4 (51.Nd4 Ke7 52.Nac6 Ke8 53.Na7 Kd8 54.Nab5 Kd7 55.a7 Kd8 56.a8Q Kd7 57.c6 Ke7 58.Qf8) 1-0. zembelek (2120) - amayak (2085), Rated Blitz game, lichess.org, 2014.

7.d4 0-0 8.c5 Bc7 9.Qh5 ed4 10.Bd4 Nf5 11.Nd2 Nd4+=.

7.d4 0-0 8.Nf3 ed4 9.Qd4 c5 10.Qd2 Be6 11.Nc3 dc4 =.

7.d4 ed4 8.Bd4 c5 9.Bc3 Be6 10.Ra2 Nd7 11.Rd2 d4 =.

7.cd5 cd5 8.d4 0-0 9.Nf3 e4 10.Nfd2 b6 11.Qb3= Be6 12.Ne4!+/– de4? 13.Qe6+- Kh8 14.Qe4 Nd7 15.Qe6 Bb4 16.Bc3 Bc3 17.Nc3 Rc8 18.Ne4 f5 19.Nd6 Rf6 20.Qf6! Nf6 21.Nf7 Kg8 22.Nd8 Rd8 23.Bc4 Kf8 24.Ke2 Ne4 25.Rhc1 1–0. pcmvr (2870) – cczekaj (2385), net–chess.com, 2009.

7.cd5 cd5 8.d4 e4 9.Nc3 0-0 10.Qb3 Bc7 11.Ne4+/– Kh8 12.Nd2 Nd7 13.Ngf3 Nb6 14.a5 Nd7 15.Bc3 b6 16.ab6 Nb6 17.Bb4 Be6 18.Bd3 Re8 19.0-0 Nec8 20.Rfc1 Nd6 21.Rc6 Ndc4 22.Qc2 Nd2? 23.Nd2 Qd7 24.Rc7 Qd8 25.Raa7 Ra7 26.Ra7 Qb8 27.Qc6 (27.Qc6 Nc4 28.b6 Nd2 29.Bd2+-) 1–0. pcmvr (2870) – cczekaj (2385), net–chess.com, 2009.

7.cd5 cd5 8.Be2 Be6 9.Nf3 0-0 10.0-0 Nd7 11.d4 e4 12.Nfd2 Rc8 13.Qb3 f5 14.Ba3 Bc7 15.Nc3 Rf6 16.Be7 Qe7=+ 17.Nd5?? Qd6–+ 18.g3 Bd5 19.Bc4 Nb6 20.Bd5 Nd5 21.Nc4 Qd7 22.Rac1 Kh8 23.Rc2 Rcf8 24.Rfc1 Bb8 25.a5 b6 26.ab6 Nb6 27.Na5 g5 28.Rc6 f4 29.Rf6 Rf6 30.Rc6 Rc6 31.bc6 Qh3?? 32.Qf7= h6 33.Qf8 Kh7 34.Qf7 ½–½. hal1958 – ian371, playchess.de, 2002.

7.cd5 Nd5 8.Nc3 0-0 9.Bc4= Be6 10.Qb3 Be7?? 11.0-0-0?? Qd6=+ 12.e4 Nf4–/+ 13.Be6 Qe6 14.Qe6= Ne6 15.Nf3 Bc5=+ 16.Rhf1 Nf4 17.Ne1 cb5 18.Nb5 Bb6 19.Bc3 Nc6=+ 20.g3 Nh3 21.Nd3 Rfd8 22.Kc2 Rac8 23.Rb1 Nd4–+ 24.Nd4 ed4 25.f4 dc3 26.dc3 Bd4 27.Rb3 Rc4 28.Nb2 Rc7 29.Rd1 Nf2 30.Re1 Nh3 31.Rd1 Kf7?? 32.Kb1= Nf2 33.Rd4 Rd4 34.cd4 Ne4 35.d5? Nd2–+ 36.Ka2 Nb3 37.Kb3 Ke7 38.Nc4 Rc5 39.d6 Kd7 40.Kb4 Rc4! 41.Kc4 Kd6 42.Kb5 Kd5 43.a5 Ke4 44.Kc5–/+ Kf3 45.Kd6 Kg2 46.Kc7 b5 47.ab6 ab6 48.Kb6 Kh2 0–1. katchum (1605) – knightmare (1725), net–chess.com, 2001.

7.Be2 0-0 8.Nf3 (8.d4 Bf5+=) 8...Be6 (8...e4 9.Ng1–/+) 9.Qc2 Nd7 10.d4 (10.0-0 c5+=) 10...Rc8 (10...Bf5 11.Qc3+=) 11.c5 Bb8 12.0-0 e4 13.Nfd2 Qc7 14.f4 ef3 15.Nf3 Bg4 (15...Bf5 16.Qd2=) 16.Nbd2 Nf5 17.Ra3 (17.Bd3 Ne3 18.Bh7 Kh8–/+) 17...Rce8 18.b6 (better is 18.Kf2!?=) 18...ab6–/+ 19.cb6 Nb6 20.e4? (better is 20.a5 Ne3 21.ab6 Qb6 22.Re3 Re3 23.Ng5 fg5 24.Rf8 Kf8 25.Bg4–/+) 20...de4 (20...Bf3 21.Nf3 de4 22.g3 ef3 23.Rff3–+) 21.Ne4 Bf3 22.Rff3 Qh2 23.Kf1 Nh4 24.Bc4 (24.Rfe3–+) 24...Nc4 25.Qc4 Kh8 26.Rfe3 Qg2 27.Ke1 Re4 28.Re4 Qe4 (28...Qe4 29.Kd1 Qh1 30.Kc2 Qg2 31.Kb1 Bd6–+) 0–1. Thompson,Samuel – Manion,Josh, WI championship, 1990.

7.Nf3 0-0 8.Qb3 Be6 9.d4 Nd7 10.c5 Bc7 11.Nc3 e4 (better 11...ed4 12.ed4 Re8=) 12.Ne4+/- Re8 (12...Bg4 13.Be2+/-) 13.Ned2 f5 (13...b6 14.cb6 Bb6 15.Bd3+/-) 14.Be2 f4 15.e4 de4?? (better 15...Kh8 16.Ng5 Bg8+/-) 16.Qe6+- Kh8 17.Qe4 (better 17.Ng5 Rf8 18.Nf7 Rf7 19.Qf7 Nf6+-) 17...Nd5 18.Qd3 Nb4 (18...Qe7 19.Kf1+-) 19.Qc4 Qe7 20.0-0 Qe2 21.Qb4 a5 (21...Qe6 22.Rfe1 Qd5 23.bc6 Qc6 24.Rab1+-) 22.ba6! Qa6 (22...Ra6 23.Qb7 Discovered attack; 22...ba6 23.Qb7 Double attack (23.Qb7 Decoy); 22...Qa6 23.Qb3 Combination) 23.Nc4 Nf6 24.Nfe5 Nd5 25.Qd2 (25.Qb3 Re6+-) 25...f3 26.gf3 Re6 27.Kh1 Rh6 (27...Rae8+-) 28.Nf7 (28.Nf7 Kg8 29.Nh6 Kf8 30.Nf5 Qc4 31.Qg5+-) 1-0. zembelek (2115) - insertcoin (2050), Rated Blitz game, lichess.org, 2013.

7.Nf3 0-0 8.d4 e4 9.Nfd2 f5 10.g3 Nd7 11.Nc3 Nf6 12.Be2 Be6 13.Qb3 Qd7 14.0-0 g5 (14...dc4 15.Bc4 Bc4 16.Qc4 Kh8 17.Ba3+=) 15.bc6 bc6 16.cd5 Ned5 17.Nd5 Bd5 18.Qc3 f4 19.Rfc1 fg3 20.fg3 Qh3 21.Bf1 Qh5 22.Nc4 Bg3? (22...Be7 23.Ne5=) 23.hg3 Ng4 24.Rc2 Rf3 25.Ba3 Rg3 26.Bg2 Qh2 27.Kf1 Rg2! 28.Rg2 (28.Rg2 Bc4 Deflection (28...Bc4 Decoy)) 28...Qh1 29.Rg1 Qf3 30.Ke1 Qf2 31.Kd1 Qg1 32.Kc2 Qf2 33.Kc1 Qf1 34.Kd2 Qc4 35.Qc4 Bc4 36.Rg1 Be6 37.Bc5 (37.Rc1 Bd5 38.Rg1 h5–+) 37...Kf7 38.Rb1 h5 39.Rb7 Kg6 40.Ba7 (40.Ra7 Ra7 41.Ba7 h4–+) 40...h4 41.Ke2 h3 42.Kf1 (42.Bb8 Ra4 43.Rb2–+) 42...Rf8 43.Kg1 (43.Ke2 Rf2 44.Ke1 h2 45.Rh7 Kh7 46.a5 h1Q) 43...h2 44.Kg2 Rf2 45.Kh1 Rf1 46.Kg2 Rg1 0–1. Schiefelbusch,Dirk (2060) – Dahm,Jochen (2235), Ruhrgebiet Regionalliga, 2003.

7.Nf3 Be6 8.Be2 d4 9.ed4= ed4 (better 9...e4!? 10.Ng1 0-0+=) 10.Nd4+- Bf7 11.0-0?? (11.Nf3 0-0+-) 11...0-0?? (11...Be5 12.Nc6 Nbc6 13.bc6 Bb2 14.Ra2–+) 12.Bf3?? (12.Nf3 Ng6+-) 12...Bc7 (12...Be5 13.Qe2 Bd4 14.Bd4 Qd4 15.Qe7 A) 15...Qc4? 16.Qb7 Qd4 17.Qa8 (17.bc6?! Nc6 18.Ra3 Ne5+=) 17...Qa1 18.bc6+-; B) 15...Bc4=) 13.bc6 Nbc6 The passed pawn on d2 will quickly become a dangerous weapon 14.Nc6 Nc6 15.d3 Qd6 Do you see the mate threat? 16.g3 Rfd8 17.Be4 Nb4 The pressure on d3 grows 18.Ba3 (18.Ra3 Bc4 19.Qh5 Bd3 (19...Nd3? 20.Qh7 Kf8 21.Rd3 Bd3 22.Ba3 Qa3 23.Na3 Bf1 24.Kf1 Rd1 25.Ke2+-) 20.Qh7 Kf8 21.Bf6 Qf6 22.Bd3 Nd3 23.Rd3 Rd3 24.Qh8 Kf7 25.Qa8 Qc6 26.Qa7 Bb6=) 18...a5 (better 18...Qd4=) 19.Nc3+- (19.Bb7?! Rab8 20.Bb4 ab4=) 19...Bb6 20.Nd5 Qe5?? (20...Bd4 21.Rb1 f5+-) 21.Nb4 (better 21.Nb6 Ra6 22.Bb4 Rb6 23.Bd2+-) 21...ab4+- 22.Bb4 Rac8? (better 22...Bc4 23.Re1 Qb2+-) 23.Qf3+- g6 (23...Bh5 24.Qf5 Qf5 25.Bf5 Rc7+-) 24.Bb7 Rc7 25.a5 f5 (25...Bf2 26.Kf2 Qb2 27.Kg1 Qb4+-) 26.ab6 Rcd7 27.Bc6 Rd3 28.Qg2 (better 28.Qd3! Rd3 29.Ra8 Kg7 30.b7+-) 28...Bc4 29.b7 Rb8 30.Ba5 (better 30.Rfe1 Qg7+-) 30...Rd6 (30...Bd5 31.Bd5 Qd5 32.Qd5 Rd5+-) 31.Bb4 (31.Bc7 Bf1 32.Qf1 Qf6 33.Bb8 Rd8+-) 31...Rc6?? (31...Rd3 32.Rfe1 Qd4+-) 32.Bc3 (32.Qc6 Bf1 33.Ra8 Ba6 34.Qa6 Kf7 35.Qc4 Kg7+-) 32...Bd5?? (better 32...Qe8 33.Ra8! Ra8+-) 33.Be5+- Bg2 34.Kg2 (better 34.Ra8 Kf7 35.Rb8 Bf1 36.Rf8 Kf8 37.b8Q Ke7 38.Qb7 Ke6 39.Qc6 Ke5 40.f4 Kd4 41.Kf1+-) 34...Rb7 35.Rfe1 Kf7 36.Bf4 Re6 37.Re5 Re5 38.Be5 Rb3 (38...Re7 39.f4+-) 39.Bf4 (39.Ra7 Ke6 40.f4 Rb6+-) 39...Rb5 (39...Rb7 40.h3+-) 40.Be3 (40.Ra7 Kg8+-) 40...h6 (40...Rb7 41.h3+-) 41.Ra7 Kf6 42.Ra6 Ke5 (42...Kf7 43.Bh6 Rb7 44.Be3+-) 43.Ra7 (43.Ra7 Kf6 44.Bh6+-; better 43.Bh6 Rd5 44.Bf4 Ke4 45.Rg6+-) 1–0. RichardSommer (1950) – Umut034 (2000), lichess.org, 2020.

7.Nc3 Be6

8.Qb3 Nd7 9.d4 0-0 10.c5 Bc7 11.Nf3 e4 12.Ne4 Bf7 13.Ned2 Rb8 14.Bd3 g6 (14...Bg6 15.0-0+/-) 15.0-0+- Re8 16.Qc2 Nf8 17.e4 (17.a5 cb5 18.Bb5 Nc6+-) 17...de4+/- 18.Ne4 Nd5 19.Bc4 Kg7 20.Bd5 (20.Rae1!?+/-) 20...Bd5+= 21.Ng3 (21.Rfe1!?+=) 21...Bf3= 22.gf3 Qd5 23.Kg2 (23.Qc3 Ne6=) 23...Ne6=+ The backward pawn on d4 becomes a target 24.Qe4?? (better 24.Ra3=+) 24...Nf4-+ 25.Qf4 (25.Kg1 Re4 26.fe4-+) 25...Bf4 26.Rfe1 (26.Ne4 f5 27.Ng3 Bg5-+) 26...Re1 27.Re1 Kf7 (27...Qb3 28.Re7 Kf8 29.Re2-+) 28.Re4 g5 29.Ne2 1-0. zembelek (2095) - itsmagic (2105), Rated Blitz game, lichess.org, 2014.

8.d3 0-0 9.Nf3 Bb4 10.Qb3 c5 11.d4+=.

8.d3 0-0 9.Nf3 Bb4 10.Qc2? d4–+ 11.Qb3 (11.Be2 dc3 12.Bc3 Qa5 13.Bb4 Qb4 14.Qd2 Qd6–+) 11...Bc3 12.Bc3 dc3 13.Qc3 cb5 (13...a6 14.bc6 Nbc6 15.Be2–+) 14.ab5 Nd7 15.h3 Qb6 16.Be2 Rfc8 17.g4 (17.d4 Qc7–+) 17...Qb5! 18.0-0 (18.cb5 Rc5 Double attack (18...Rc3 Pinning; 18...Rc3 Deflection; 18...Rc5 Decoy)) 18...Qc6 19.Nd2 a6 (19...Nb6 20.Bf3 Qd7 21.Qb3–+) 20.Nf3 (20.Qb4 Rc7 21.d4 ed4 22.ed4–+) 20...b5 21.d4 (21.Qb4 Ng6–+) 21...e4 (better is 21...Bc4!? 22.Qc2–+) 22.d5 (22.Nd2 bc4 23.Rfc1 Nb6–+) 22...Nd5 (22...Nd5 23.Qa3 ef3 24.cd5 Bd5–+; 22...ef3?! 23.dc6 fe2 24.Rfb1 Nc6 25.cb5–+) 0–1. Baer,Cy (1895) – Huwer,Stephan (1950), RSX7D – Oldenburg–1, 2007.

8.d3 0-0 9.Nf3 Bb4 10.Nd2 (10.Qb3 Qa5 11.d4 Nd7 12.Rc1 Rae8+=) 10...Nd7 (10...d4 11.ed4 Qd4 12.Qb3+= c5+=) 11.Be2+= dc4 (11...Qa5 12.Qc2+= d4+=) 12.dc4 Nc5 13.0-0 Nd3 (13...Bf5 14.Bf3+=) 14.Qb1 (14.Qb3 Nb2 15.Qb4 Qd2=) 14...Nb2 15.Qb2 Qa5 16.Nce4 Bd2 17.Qd2 Qd2 18.Nd2 Rfd8 19.Ne4 Bf5 20.Ng3 Bd3 21.Rfd1 Be2 22.Ne2 Kf7 23.Nc3 f5 24.f3 Ke8 25.Kf2 Rd1 26.Rd1 Rd8 27.Ke2 Rd1 28.Kd1 Kd7 29.Kc2 Kd6 30.Kb3 Ng8 31.bc6 bc6 32.Kb4 Nf6 33.c5 Kd7 34.e4 g6 35.a5 Ke7 36.Kc4 fe4 37.Ne4 Ne4 38.fe4 Kf6 39.Kd3 Kg5 40.Ke3 Kg4 41.g3 (41.Ke2–+) 41...Kh3 42.Kf3 Kh2 43.Kg4 h6 44.Kf3 Kh3 (44...Kh3 45.a6 h5–+) 0–1. De Visser,Arno – Klarenbeek, 1985.

8.d3 0-0 9.Nf3 Qc7 10.Be2 Rd8 11.0-0 dc4 12.dc4 Nd7=.

8.d3 d4 A) 9.Ne4 Bb4 10.Ke2 0-0 11.Qb3 a5 12.ed4 ed4–/+; B) 9.Nb1 Bb4 (9...0-0 10.Nf3 Bb4 11.Nbd2 de3 12.fe3 Nf5–/+; 9...Bc5 10.ed4 Bd4 11.Bd4 Qd4 12.Nd2 a6+=; 9...Nf5 10.Qh5 g6 11.Qe2 a6 12.g4 Bb4+=; 9...Qa5 10.Nd2 de3 11.fe3 Nf5 12.Qe2 0-0–/+) 10.Nd2 de3 11.fe3 a6 12.d4 Nf5–/+; C) 9.ed4 ed4 10.Ne4 Bb4 11.Nd2 0-0 12.Ngf3 c5+=.

8.cd5 A) 8...cd5 A1) 9.d4 Qa5 (9...0-0 10.de5 fe5 11.Nf3 Qa5 12.Ng5 Bb4=; 9...a5 10.de5 fe5 11.Nf3 Nd7 12.Ng5 Bg8=; 9...a6 10.de5 fe5 11.Nf3 0-0 12.Ng5 Qd7=; 9...Nd7 10.de5 fe5 11.Nf3 Qa5 12.Rc1 Qb4+=) 10.Nf3 Nd7 11.Rc1 Rc8 12.de5 Bb4+=; A2) 9.Be2 Nd7 (9...0-0 10.Nf3 Qa5 11.0-0 Nd7 12.d4 e4=; 9...Qa5 10.Nf3 Nd7 11.0-0 Rc8 12.Re1 0-0=) 10.Nf3 Rc8 11.0-0 Qa5 12.Rc1 Nb6+=; A3) 9.Rc1 Nd7 (9...0-0 10.d4 Qa5 11.de5 fe5 12.Nf3 Qb4+=; 9...Qb6 10.d4 ed4 11.Qd4 Qd4 12.ed4 a6=; 9...a6 10.Nf3 0-0 11.Be2 Qb6 12.0-0 Nd7=; 9...Qa5 10.Qh5 Bf7 11.Qg4 0-0 12.Nf3 f5=) 10.d4 Qa5 11.de5 fe5 12.Nf3 Qb4+=; A4) 9.Nf3 Nd7 (9...0-0 10.Be2 Qe8 11.0-0 Qg6 12.Ba3 Ba3=; 9...Qd7 10.d4 e4 11.Nd2 0-0 12.Ba3 Rc8=) 10.Be2 0-0 11.0-0 Rc8 12.d4 e4+=; B) 8...Nd5 B1) 9.Qh5 g6 (9...Bf7 10.Qg4 0-0 11.Nf3 a6 12.Nd5 Bd5+=) 10.Qf3 Nb4 11.Rc1 Bb3 12.Be2 Nc2+=; B2) 9.Nf3 a6 (9...Nc3 10.dc3 a6 11.Bd3 0-0 12.Qb1 f5=; 9...0-0 10.Bc4 Nd7 11.e4 Nf4 12.Be6 Ne6=; 9...Nd7 10.Ne4 Bb4 11.bc6 bc6 12.Rc1 Rc8=) 10.e4 Nc3 11.dc3 0-0 12.Be2 ab5+=.

8.Qh5 Bf7 9.Qg4 0-0 10.cd5 cd5 11.Nf3 Nd7+=.

8.Qh5 Bf7 9.Qg4 0-0 10.cd5 f5 11.Qh3 cd5 12.Nf3 Nd7=.

8.Qh5 g6 9.Qf3 Nd7 10.bc6 bc6 11.cd5 Nd5 12.Ne4 Be7+=.

7.Qh5 g6

8.Qd1 0-0 (8...Be6 9.cd5 Nd5 10.Nf3 c5 11.Nc3 Nc3 12.dc3 Qe7=) 9.Nf3 (9.d4 ed4 10.Qd4 Be6 11.cd5 Nd5 12.Nf3 Nd7+=; 9.cd5 cd5 10.d4 Be6 11.de5 fe5 12.Nf3 Nd7+=) 9...Bg4 (9...e4 10.Ng1 Be6 11.Nc3 Be5 12.cd5 Nd5+=) 10.Be2 (10.cd5 cd5 11.Be2 Nd7 12.0-0 Qc7+=) 10...cb5 (10...Qc7 11.Nc3 Be6 12.cd5 Nd5=) 11.ab5 e4 (11...Be6 12.d4 (12.d3= Qc7=) 12...dc4=; 11...a5 12.cd5 Nd7+=) 12.Nd4 Be2 13.Qe2 Qd7 14.Nc3 Bb4 15.0-0 Rc8 16.cd5 Bc3 17.Bc3 (17.dc3 Qd5 18.Rfd1 a6+=) 17...Qd5 (17...Nd5 18.Qe1+=) 18.Rfc1. Arechabaleta Saez,Julian – Weise,G, corr ICCF–Cup8/9 V018, 1990.

8.Qf3 0-0 9.d4 (9.Nc3 e4 10.Qe2 Nd7 11.cd5 Nc5 12.Ne4 Ne4+=; 9.cd5 cd5 10.Nc3 Be6 11.Ba3 Ba3 12.Ra3 Qa5+=) 9...ed4 (9...e4 10.Qd1 Be6 11.c5 Bc7 12.Nd2 Nd7=) 10.Bd4 Nd7 11.Qd1 c5 12.Bc3 Nb6 =.

8.Qf3 Bf5 9.Nc3 Nd7 (9...e4 10.Qd1 0-0 11.cd5 cd5 12.d3 Be5=) 10.cd5 cd5 11.e4 de4 12.Ne4 Be4 +=.

8.Qh6 Nf5 9.Qh3 Nd4 10.Qh6 Bf8 11.Qh4 Nc2 12.Kd1 Na1 13.Ba1 Bg7 (13...Be6 14.cd5 Bd5 15.Nc3-+) 14.cd5 cd5 15.Qb4 Qe7 (15...Be6 16.d4-+) 16.Qe7 Ke7 17.d4 Bf5 18.Nc3 Rd8 19.Bb2 Ke6 (19...a6 20.h3-+) 20.f4 (20.Nf3 Bg4-+) 20...Bg4 21.Be2 Be2 22.Nge2 Nd7 23.e4 Nb6 (23...de4 24.fe5 fe5 25.Ne4-+) 24.a5-/+ Nc4 25.ed5 Ke7 26.Bc1 Rac8 (better 26...ed4!? 27.Nd4 f5 (27...Na5?! 28.Ne6 Rg8 29.Re1=+) 28.Re1 Kf7-+) 27.fe5=+ fe5 28.Bg5 Bf6 29.Bf6 Kf6 30.Rf1 Ke7 31.Kc2?? (better 31.de5 Ne3 32.Ke1 Nd5 33.Ne4-+) 31...Ne3 32.Kd3 Nf1 33.de5 Nh2 34.Ke4 (34.Kd4 Ng4-+) 34...Rc4 35.Kd3 Rdc8 36.Ne4 Re4! 37.Ke4 Ng4 38.d6 (38.Nd4 Rc4 39.a6 ba6 40.ba6-+) 38...Kd7 39.Kd5 (39.Nd4 Rc5 40.Nf3 Rb5-+) 39...Ne3 (better 39...Re8 40.Nc3-+) 40.Ke4 (40.Kd4 Ng2 41.Nc3 Nf4-+) 40...Ng2 41.Kd5 (41.Nd4 Rc3 42.Kd5 Nf4 43.Ke4 Ne6-+) 41...Ne3 42.Ke4 (42.Kd4 Nc2 43.Kd5 Nb4 44.Kd4 a6 45.ba6 ba6-+) 42...Ng4 43.Kd5 (43.Nd4 Rc5 44.Nf3 Rb5-+) 43...Ne5! 44.Ke5 (44.Ng3 Ng4 45.Ne4 b6-+) 44...Rc5 (better 44...Re8!? 45.Kf6 Re2 46.Kg5-+) 45.Kf6 Rb5 46.Ng3 h5 47.Kg6 h4 48.Nf5 (48.Ne4 h3 49.Nf6 Kd6-+) 48...h3 (better 48...Rf5 49.Kf5 h3 50.Kf4-+) 49.Ng3 h2 50.Kf6 Kd6 (better 50...Ra5 51.Kg6 Ra3 52.Nh1-+) 51.a6 ba6 52.Ne4 Kd7 53.Ng3 Rb1 0-1. odin_tip1 (2150) - alexyarovoy85 (2115), Rated Blitz game, lichess.org, 2016.

5.a4 Bd7

6.c4 Bb4 7.cd5 cd5 8.Be2 Ne7 9.Bf3 a6 (9...Be6!?=+) 10.Qb3= White gets in control 10...a5 (10...Ba5 11.Bd5 Nd5 12.Qd5=) 11.Bd5+= Nd5 12.Qd5 Qc7 (12...Qc8 13.Ba3+=) 13.Nf3 Bf5 14.0-0 Nd7 (14...Qd7 15.Nc3+=) 15.Rc1+- Qd6 (15...Qb6!? 16.d4 Be6+-) 16.Qb7+- Rd8 (16...Rb8 17.Qc8 Rc8 18.Rc8 Kf7 19.Rh8=) 17.e4 (17.d4 0-0+-) 17...Be6 (17...Bg4 18.Ne1+-) 18.Nc3 (18.d4 Bg4 19.Nbd2 ed4+-) 18...Nc5 19.Qg7 Rg8 20.Qf6 (20.Qh7!? Nb3+-) 20...Nd3 (20...Rg2 21.Kh1 Rg6 22.Qh8 Rg8 23.Qh7 Nd3+-) 21.Ne2?? (better 21.Nd1 Rg2 22.Kh1+-) 21...Rg6?? (better 21...Bh3! 22.Qd8 Qd8–+) 22.Qh8+- Kf7 (22...Rg8 23.Qh7 Nb2+-) 23.Qh7 Rg7 24.Ng5 (24.Qh5 Kg8 25.Be5 Bg4 26.Qg4 Ne5+- (26...Rg4?? 27.Bd6 Nc1 28.Rc1 Bd6 29.Nc3+-)) 24...Kf8 (24...Kf6 25.Qg7 Kg7 A) 26.Ne6 Qe6 27.Rc2 Kg8–/+ (worse 27...Nb2 28.Rb2 Qc4 29.Ng3=); B) 26.Rc6+-) 25.Ne6 (better 25.Qh8 Bg8 26.Rc6 Rg5 27.Rd6 Rd6 28.Ba3+-) 25...Qe6 26.Qf5 (better 26.Qh8!? Rg8 27.Qh4 Be7+-) 26...Qf5 27.ef5 Nc1 (27...Nb2 28.d4 Re7 29.de5 Re5 30.Nf4+-) 28.Rc1 (28.Bc1 Rd3+-) 28...Bd2 (28...Rd2 29.Be5 Re2 30.Bg7 Kg7 31.g4+-) 29.Rd1 (29.Be5 Re7 30.Bf6 Re2 31.Bd8 Bc1 32.Ba5 Bd2 33.Bd2 Rd2=) 29...Bg5 (29...Rg4 30.Bc1 Bg5 31.Rd8 Bd8 32.f4+-) 30.Rd8 Bd8 31.Be5 Rf7 (31...Rd7 32.g4+-) 32.g4 Kg8 (32...Bc7 33.Bc3+-) 33.Nd4 Kh7 (33...Rd7 34.Nc6+-) 34.b6 (better 34.Ne6 Re7 35.g5+-) 34...Bb6 35.Kg2 (better 35.g5 Kg8 36.g6 Rd7+-) 35...Bd4 36.Bd4 Kh6 (36...Rc7 37.Kf3 Rc4+-) 37.Bc3 Kg5 (37...Kh7 38.Kg3+-) 38.h3 (38.Kg3 Ra7+-) 38...Ra7 39.Kg3 Ra6 (39...Kh6 40.h4+-) 40.h4 (40.Bg7 Rf6 41.h4) 40...Kh6+- 41.Kf4 (41.f6 Ra7+-) 41...Kh7 42.g5 Kg8 (42...Rc6 43.Ba5 Rc4 44.Kg3 Ra4 45.Bc7+-) 43.h5 Rc6 44.Bd2 (better 44.Ba5 Rc4 45.Ke3 Ra4+-) 44...Rc4 45.Ke5 Rh4 (45...Ra4 46.g6 Ra2+-) 46.h6 Ra4 (46...Rc4 47.g6 Rc7+-) 47.g6 Rh4 48.f6 Rh5 49.Ke6 White prepares f7 49...Rh6 (49...Rh3 50.f7 Kf8 51.g7) 50.Bh6 a4 (50...Kh8 51.f7 a4 52.f8Q) 51.f7 Kh8 52.f8Q 1–0. aravind555 – gale2016, lichess.org, 2018.

6.c4 cb5 7.cb5 a6 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 Ne7 11.Nc3 Ng6 (11...Be6 12.d4 e4 13.Nd2=) 12.Be2 (12.Nd5 Bg4 13.Qb3 Bf3 14.gf3 Bd6+/-) 12...Bb4 (12...Be6 13.0-0=) 13.0-0 (13.Nd5!? Bd6 14.d4+/-) 13...Bc3 (13...Be6 14.Qb3 Be7 15.d4=) 14.dc3 (better 14.Bc3 Bg4 15.h3 Bf3 16.Bf3+= (worse 16.gf3 Qd7-/+)) 14...0-0?? (14...Be6 15.c4=) 15.c4?? (better 15.Qd5 Kh8 16.Qb7+-) 15...dc4 16.Bc4 Kh8 17.Qc2 Re8 (17...Bg4 18.Nd2+=) 18.Rd1 (18.Bf7 Bb5 19.Rd1 Qc8+/-) 18...Qc7 19.Bd3 (better 19.Qb3+=) 19...Qc2-/+ 20.Bc2 Bb5 21.Rb1 Bc6 Black prepares the advance e4 22.Bc3 Na6 23.Bb3 (23.Nd2 b5-/+) 23...Nc5 24.Bc4 e4 25.Nd4 Na4 (25...Ne5 26.Be2-/+) 26.Bb4 (26.Nc6 bc6 27.Bd4 Ra8=+) 26...Rd8 (26...Ne5 27.Be6-/+) 27.Nc6 bc6 28.Rc1 (28.Bb3 c5 29.Ba4 Rb8=) 28...c5 (28...Nb2 29.Be6 Nd3 30.Ba5-/+) 29.Bc3 (better 29.Ba5 Ra8 30.Bc7=) 29...Ne5?? (better 29...Nc3 30.Rc3 Ne5-/+) 30.Be5+= fe5 31.Bb5 Nb6 32.g3 (32.Rc5!? Rd1 33.Bf1=) 32...Rc8=+ 33.Rb1 Rc7 (33...Nd5 34.Bd7 Rd8 35.Bc6=) 34.Ba6 (34.Be8 Nc8 35.Rb8 Kg8=) 34...Nd7=+ 35.Rb5 (35.Bb7 c4=+) 35...h6 (35...c4 36.Kf1-+) 36.Rb2 (36.Rb7 Rb7 37.Bb7 Nf6-/+) 36...c4-+ 37.Rc2 c3 38.Bb5 Nb6 39.Kf1 Nd5 40.Ba4? (better 40.Ke2-+) 40...Nb4 41.Ke2 (41.h4 Nc2 42.Bc2 g6-+) 41...Nc2 42.Bc2 Kh7 (42...g6 43.g4-+) 43.f3? (43.Be4 g6 44.Kd1-+) 43...Kg8 (43...g6!? 44.fe4 Rd7 45.Bd3-+) 44.fe4 Kf7 45.Kf3 (45.Bb3 Kf6 46.Kd3 g5-+) 45...Ke6 (45...Rd7 46.Bb3 Kf6 47.h3-+) 46.Bb3 (46.Ke2-+) 46...Kd6 47.g4 Kc5 48.Bc2 Kb4 49.h3 Ka3 50.h4 Kb2 51.Ba4 c2 (better 51...Ra7 52.Bd1-+) 52.Bc2 Kc2 53.g5 Kd3 54.Kg4 Rc6 (better 54...hg5 55.h5-+) 55.Kf5 g6 56.Ke5 hg5 57.hg5 Ke3 58.Kd5 Rc8 59.e5 Re8 60.Kd6 Kf4 61.e6 Kf5 62.Kd7 Re6 (62...Re6 63.Kd8 Kg5 64.Kc7 Kf6 65.Kb7 g5 66.Kb8 g4 67.Kb7 g3 68.Kc8 g2 69.Kd7 g1Q 70.Kc7 Qc5 71.Kd7 Qc6 72.Kd8 Re8) 0-1. Jimito100 (2030) - Mordlin (2030), Rated Bullet game, lichess.org, 2020.

6.c4 cb5 7.cb5 Bb4 8.Be2 (8.Qb3!? Qe7 9.Qd5+=) 8...Ne7= 9.Nf3 a6 10.Nc3 Ba5 (10...ab5 11.ab5 Ra1 12.Qa1=) 11.0-0 Qb6 12.Qb3 Bc3 13.dc3 Nbc6 14.c4 (14.Ba3!?+=) 14...Na5= 15.Qa2 Be6 (15...Nc4!? 16.Bc4 dc4 17.Qc4 ab5 18.ab5 Rc8–/+) 16.cd5= Bd5 17.Qa3 Bc4 (17...Nc4 18.Qb4 Nc6 19.Qb3=) 18.Bc4 Nc4 19.Qb4 Nb2 20.Qb2 0-0 21.Qb3 Kh8 22.h3 (22.Rfb1 Rfd8=) 22...Rad8 ½–½. Ruhle,Ernst Albrecht (1605) – Benz,Urs (1720), Weggis Seniors op 7th, 2006.

6.c4 cb5 7.cb5 Bf5 8.d4 Nd7 9.de5 Ne5 10.Nc3=.

6.c4 dc4 7.Bc4 Bb4?? 8.Qb3+- Bd2 9.Nd2 (9.Kd2?! cb5 10.Bf7 Kf8+-) 9...Kf8 (9...Ne7+-) 10.Bg8 g6 11.Qf7 1–0. Hal1958 – Mrempel, playchess.de, 2002.

6.c4 Bd6 7.Qb3 Ne7=+ 8.Nc3 Be6 9.d4 (9.cd5 cd5 10.e4 Bc5=+) 9...ed4=+ 10.ed4 0-0 11.c5 Bc7 12.Bd3 Nf5 (12...b6 13.Qc2 h6 14.Qe2=) 13.Nce2 (13.bc6 bc6 14.Qb7 Nd7 15.Bf5 Bf5 16.Qc6 Re8 17.Nge2 Rb8+=) 13...Re8 (13...Ba5 14.Bc3=) 14.Nf3+= Nh6 15.0-0 Bg4 16.Qc2 (16.Bc1 Nf5 17.Nf4 Ne7+=) 16...Bf3= 17.Bh7?? (better 17.gf3 f5 18.Rae1=) 17...Kh8-+ 18.gf3 Re2 (better 18...f5!? 19.Bf5 Nf5 20.Qf5 Re2-/+) 19.Qe2=+ Kh7 20.Qd3 (20.Rfe1!?=+) 20...f5-/+ 21.Kh1 (21.Bc1!? Qh4 22.f4-/+) 21...Qh4-+ 22.Rg1?? (better 22.f4-+) 22…Qh2 0-1. zembelek (2100) - lexich (2195), Rated Blitz game, lichess.org, 2014.

6.c4 Bd6 7.d4 e4 (7...Ne7 8.c5 Bc7 9.de5 fe5 10.Qh5 g6 11.Qh4=) 8.Nc3 Ne7 9.Be2 (9.bc6 A) worse 9...Nbc6 10.cd5 (10.Nd5?! Nd5 11.Qh5 g6 12.Qd5 Bb4 13.Kd1 Qe7=) 10...Nb4 11.Ne4+/-; B) 9...bc6 10.Ba3 Ba3 11.Ra3 0-0+=) 9...Be6 10.cd5 cd5 11.Qb3 0-0 (better 11...Qa5=) 12.Ne4!+/- Bb4 (12...de4 13.Qe6 Double attack (13.Qe6 Pinning; 13.Qe6 Deflection; 13.Qe6 Decoy)) 13.Nc3 Bc3 14.Bc3 Nd7 15.Bf3 (15.a5 Qe8+-) 15...Nb6+/- 16.Ne2 Nc4 17.0-0 Bf7 18.Rfd1 Ng6 19.Nf4 (19.Bb4!? Re8 20.Nc3+/-) 19...Nf4+= 20.ef4 Re8 21.Ra2 Qd6 22.g3 g5 (22...a6 23.a5+=) 23.fg5+/- fg5 24.Re2 Re2 25.Be2 Re8 26.Bc4 (26.Re1!?+/-) 26...dc4+= 27.Qb4 (27.Qb1 Qa3 28.Qc2 Bg6+=) 27...Qd5 28.Qc5 Qf3 (better 28...b6!? 29.Qd5 Bd5=) 29.Qg5+/- Bg6 (29...Kh8 30.Re1 Re1 (30...Qc3? 31.Re8 Be8 32.Qe5 Kg8 33.Qe8 Kg7 34.Qd7 Kg6 35.Qd6 Kg7 36.Kg2+-) 31.Be1 Bd5 32.Qe5 Kg8 33.Qe8 Kg7 34.Qe7 Kg8 35.Qd8 Kg7 36.Qd7 Kg8 37.Qc8 Kg7 38.Qc7 Kg8 39.Qb8 Kg7=) 30.Rf1?? (30.Re1 Re1 31.Be1 Kf7+/-) 30...Re4?? (30...Qc3 31.Qd5 Kh8 32.h4-/+) 31.d5?? (better 31.Qd5 Qf7 32.Qc5+-) 31...Rg4?? (31...Qc3 32.h4-/+) 32.Qh6 (32.Qe5 Kf7 33.Qe6 Kf8 34.Qc8 Ke7 35.Qb7 Kf8 36.Qc8 Kf7 37.Qd7 Kf8 38.Bg7 Kg8 39.Bh6+-) 32...Be4?? (better 32...Qc3 33.f3 Rd4-+) 33.Qe6+- (33.Qe6 Kf8 34.Qc8 Kf7 35.Qd7 (35.Qb7 Kg6 36.Qg7 Kh5 37.Qe5 Rg5 38.Qe8 Kg4 39.Qe4 Qe4 40.f3 Qf3 41.Rf3 Kf3-+) 35...Kg6 36.Qe8 Kh6 37.Bd2 Rg5 38.Bg5 Kg5 39.h4 Kh6 40.Qe6 Kg7 41.Qh3 Bd5 42.Re1+-) 1-0. Thumbull (2170) - BangBangBangDrama (2180), Rated Bullet game, lichess.org, 2021.

6.c4 Nh6 7.Nf3 Bd6 8.cd5 cd5 9.Be2 0-0 10.0-0 Be6 11.h3 Nd7 12.Nc3 Nc5 (better is 12...Rc8!?+=) 13.d4+= ed4 14.Nd4 (worse is 14.Qd4 Nb3 15.Qd3 Na1 16.Ra1 Bb4+=) 14...Bf7 15.Bf3 Attacking the isolated pawn on d5 15...Be5 16.Nde2 Ne4 17.Be4 (17.Rc1 Rc8 A) worse is 18.Ne4 de4 (18...Bb2? 19.Rc8 Qc8 20.Nd6+-) 19.Be4 Bb2 20.Rc8 Qc8–/+; B) 18.Nd4+=) 17...de4+= 18.Qc2 Qd3 19.Qd3 (19.Qb1 Bc4+=) 19...ed3–/+ 20.Nd4 Rad8 21.Ne4 Rfe8 22.Rfd1? (22.Nc5 Bd4 23.Bd4=) 22...Bg6?? (better is 22...Bd4 23.Bd4 Re4 24.Rd3 Nf5–+) 23.Nc5= Nf5 24.Nf5 (24.Nb7!? Rd5 25.Rd3 Nd4 26.Rd4 Bd4 27.Bd4+= (worse is 27.ed4 Re2 28.Bc3 Rc2=)) 24...Bb2+= (worse is 24...Bf5 25.Be5 Re5 26.Nb7+=) 25.Ra2 Bf5 26.Rb2 b6 27.Nb3 Re4 28.Nd4 Bg6? (better is 28...Rdd4!? 29.ed4 Rd4=) 29.Rd3+/– Rc8 30.Rd1 Rc4 31.Ra2 Bf7 32.Raa1 Re8 33.Nf5 Rc7 34.Nd6 Rd8 35.Nf7 Rd1 36.Rd1 Kf7 37.Kf1 Ke6 38.Ke2 Ke5 39.f4 Ke6 40.g4 Rc2 41.Rd2 Rc4 42.Rd4 Rc2 43.Kf3 Rh2 44.Kg3 Ra2 45.h4 Ra1 46.f5 Ke5 47.Rc4 Ra3 48.Kf3+- Kd5 49.Rd4 Ke5 50.Re4 Kd5 51.Kf4 Kc5 52.g5 Ra1 53.gf6 gf6 54.Rd4 h5+/– 55.Kg3 Ra2 56.Kf3 ½–½. Hal1958 – Chessy371 (2200), playchess.de, 2006.

6.d4 Bb4 7.c3 Bd6 =.

6.Nf3 a6 7.c4 ab5 8.ab5 Ra1 9.Ba1 Bc5 10.cd5 (10.d4 ed4 11.Bd4 (11.Nd4 Ne7 12.Qh5 g6 13.Qf3 Bb4 14.Bc3 Bc3=) 11...Bb4 12.Bc3 Bc3 13.Nc3 Qa5 14.Qd2 Ne7+=) 10...cd5 (worse is 10...cb5 11.d4 Bb4 (11...ed4 12.Nd4 Qa5 13.Nd2+/– Bb4 14.Nc2 Na6+/–) 12.Bc3 Bc3 13.Nc3 Qa5 14.Qb3 Na6+/–) 11.d4 Bb4 12.Bc3 Bc3 13.Nc3 e4 (13...Qa5 14.Qb3 Qa1+=) 14.Nd2 Ne7 (better is 14...Be6!?+=) 15.Nd5!+- Nd5 (better is 15...Bf5!? 16.Nf4 Qd7+-) 16.Qh5 Kf8 (16...Ke7 17.Qd5 Qb6 18.Bc4+- (18.Ne4?! Qa5 19.Nd2 Rc8+-)) 17.Qd5 g6 18.Bc4 Qe7 (18...Kg7 19.Ne4 Qe7 20.Qb7 Qb4 21.Nd2+-) 19.Ne4 (19.Qb7 Kg7+-) 19...Qb4 (19...Kg7 20.Nd6 b6 21.e4+-) 20.Ke2 Kg7 21.Qf7 Kh6 22.Nf6 Bg4 (22...Qf8 23.Ng8 Rg8 24.Qg8 Qg8 25.Bg8 Bb5 26.Kd2 Kg7+-) 23.Ng4 1–0. pierre – petrit5, internet, 2008.

6.Nf3 Bc5 7.d4 ed4 8.Nd4 Ne7 (8...Bb4 9.Bc3 Bc3 10.Nc3+=) 9.c4 (9.Bd3 Bb4 10.c3 Bd6+=) 9...0-0 10.cd5 (10.Bd3 Bb4 11.Bc3 Bd6+=) 10...Nd5 (10...cd5 11.Bd3+/–) 11.Bc4 Kh8 (11...Bd4 12.Bd5 cd5 13.Bd4+=) 12.0-0+/– Nb6 (12...Nb4 13.Qh5 Qe7 14.Rd1+/–) 13.Bd3 a6? (13...cb5 14.Qh5 h6 15.Qc5 Na4+-) 14.Qh5+- f5 15.Nf5 Bf5 16.Bf5 Rf5 17.Qf5 Be7 (17...Qf8 18.Qf8 Bf8 19.Rd1+-) 18.Nd2 (18.a5 Nc4 19.Bg7 Kg7 20.Qg4 Kh8 21.Qc4 ab5+-) 18...N8d7 (18...cb5 19.ab5 Qd5 20.Qd5 Nd5 21.Rfc1+-) 19.bc6 (19.a5 Nd5 20.e4 N5f6 21.bc6 bc6+-) 19...bc6 20.Rfc1 c5 (20...Rc8 21.a5 Nd5 22.e4+-) 21.a5 Nc8 22.Ne4 Qc7 (22...Nd6 23.Qg4 Nf6 24.Bf6 Bf6 25.Nf6 Qf6+-) 23.Ng5 Nf8 24.Qf7 1–0. pcmvr (2715) – dmendiola (2275), net–chess.com, 2006.

6.Nf3 Bd6 7.Nc3 =.

5.a4 Nd7

6.c4 Bd6 7.Nf3 Ne7 8.cd5 cd5 9.Be2 0-0 10.0-0 b6 11.d4 Bb7 12.de5 (12.Ba3 Ba3 13.Na3 a6+=) 12...fe5 13.Nc3 Rc8 14.Rc1 Nc5 15.Ba3 Qd7 16.Na2 (16.Nh4 Rcd8=) 16...Ne4 (16...Qe6 17.Nc3=+) 17.Bd6= Qd6 Black launches an attack 18.Qb3 Rc5 (18...Nc5 19.Qd1=+) 19.Nb4 (19.Qb2 Ng6=) 19...Rfc8=+ 20.Nc6? (better 20.Na2!?=+) 20...Nc6–/+ 21.bc6 R8c6 22.Rcd1 (22.Rc5!? Rc5 23.Bd3–/+) 22...Nc3–+ 23.Rd2? (23.Bb5 Rc8 24.Rd2–+) 23...Ne2 24.Re2 Kf8 (better 24...Ba6 25.Ree1 Rc3–+) 25.Rd2–/+ Ba6 26.Rfd1 Bc4 27.Qb2 Rc7 (27...e4 28.Ne5 Bb3 29.Qb3 Qe5 30.h3–/+ (30.Rd5 Rd5 31.Rf1 Rc3 32.Qb4 Kg8–+)) 28.Qe5 (better 28.Ne5 Qe6 29.Nc4 Rc4 30.a5+= (30.Rd5?? Qd5 31.Qb1 Qd1 32.Qd1 Rc1–+)) 28...Qe5–/+ 29.Ne5 Ke7 (29...Bb3 30.Nd3 Rc4 31.Re1–/+) 30.g3 Kf6 (30...Ra5 31.Nd3–/+) 31.Nf3 (31.Nd3 Ra5=+) 31...R7c6 (better 31...Ra5!?–/+) 32.Nd4= Rc7 (32...Rc8 33.Rb2=+) 33.Ra1 (33.Nf3 Ra5–/+) 33...a6 34.a5 (34.Rb2 Rb7=) 34...b5 (34...Ra5 35.Ra5 ba5 36.Rd1–/+) 35.Nc2=+ Re7 (35...Be2 36.Ne1 Bg4 37.Nd3=) 36.Nb4= Bb3 (better 36...Re6=) 37.Na6+- Rc4 (37...Rc3 38.Nb4 Ke6 39.Kg2+-) 38.Rd5+- Ra4 39.Ra4 ba4 40.Rd6 Ke5 41.Rb6 Ra7 (41...Kd5 42.Nb4 Kc5 43.Nd3 Kc4 44.Nc1+-) 42.Nc5 Kd5? (better 42...Bd1 43.Nd3 Kf5 44.Rb5 Ke6+-) 43.Nb3 (43.Rb3?! Kc5 44.Rb1 a3=) 43...ab3 44.Rb3 Ra5 45.Rb4 (45.Rb7!? g6 46.Rh7 Ke6+-) 45...Ke6 (45...Ra7 46.e4 Kc5 47.Rb2+-) 46.Rf4 (46.f4 Ra2+-) 46...g6 47.h4 g5 (better 47...Ra2+-) 48.Kg2?? (better 48.hg5 Rg5 49.Kg2+-) 48...gf4–+ 49.ef4 (49.gf4 Kf5 50.Kf3 Ra3–+) 49...Kf5 50.Kh3 (50.f3 Ra2 51.Kg1 h5–+) 50...Ra4 51.f3 (51.Kg2–+) 51...Ra2 52.h5 h6 53.g4 Kf4 54.g5 Rf2 (54...hg5 55.h6 Kf3 56.h7 Kf4 57.h8Q g4 58.Kh4 Rh2) 55.gh6–+ Rf3 56.Kg2 Ra3 57.h7 Ra8 58.Kh3 (58.Kf2 Rh8–+) 58...Kg5 (58...Rh8 59.Kg2 Rh7 60.Kh3 Rh5 61.Kg2 Rg5 62.Kf2 Re5 63.Kg2 Re2 64.Kf1 Kf3 65.Kg1 Re1 66.Kh2 Rd1 67.Kh3 Rh1) 59.Kg3–+ Rh8 60.Kf3 Rh7 61.Ke4 Rh6 62.Ke5 Rh5 63.Ke4 Rh4 64.Kf3 Rg4 65.Ke3 Rf4 66.Ke2 Kf5 67.Ke3 Re4 68.Kf3 (68.Kd3–+) 68...Ke5 (68...Re5 69.Kg3 Re3 70.Kf2 Kf4 71.Kg2 Re2 72.Kf1 Kf3 73.Kg1 Re1 74.Kh2 Rd1 75.Kh3 Rh1) 69.Kf2 (69.Kg3 Rf4 70.Kh3 Kf5 71.Kg3 Kg5 72.Kh2 Kg4 73.Kg2 Rf5 74.Kh2 Kf3 75.Kg1 Rh5 76.Kf1 Rh1) 69...Rf4 (69...Kf4 70.Kg2 Re2 71.Kf1 Kf3 72.Kg1 Re1 73.Kh2 Rd1 74.Kh3 Rh1) 70.Kg3 (70.Ke3–+) 70...Rf5 (70...Kf5 71.Kh3 Rf3 72.Kh2 Kg4 73.Kg2 Rf4 74.Kh2 Kf3 75.Kh3 Kf2 76.Kh2 Rh4) 71.Kg2 (71.Kg4 Kf6 72.Kh4 Rf4 73.Kh3 Kg5 74.Kg3 Rf5 75.Kh2 Kg4 76.Kg2 Rf6 77.Kh2 Kf3 78.Kg1 Rh6 79.Kf1 Rh1) 71...Rf6 (71...Kf4 72.Kf2 Re5 73.Kg2 Re2 74.Kf1 Kf3 75.Kg1 Re1 76.Kh2 Rd1 77.Kh3 Rh1) 72.Kh3 (72.Kg1 Rf3 73.Kh2 Ke4 74.Kg1 Ke3 75.Kg2 Kf4 76.Kh2 Rf2 77.Kh1 Kg4 78.Kg1 Kg3 79.Kh1 Rf1) 72...Rg6 (72...Kf4 73.Kg2 Kg4 74.Kh2 Kf3 75.Kg1 Rh6 76.Kf1 Rh1) 73.Kh2 Rf6 (73...Ke4 74.Kh3 Kf4 75.Kh2 Kf3 76.Kh1 Kf2 77.Kh2 Rh6) 74.Kh3 Rf7 (74...Kf4 75.Kg2 Kg4 76.Kh2 Kf3 77.Kg1 Rh6 78.Kf1 Rh1) 75.Kh2 (75.Kg3 Ke4 76.Kg4 Rg7 77.Kh5 Kf5 78.Kh4 Rg8 79.Kh3 Kf4 80.Kh2 Kf3 81.Kh1 Kf2 82.Kh2 Rh8) 75...Rg7 76.Kh3 ½–½. BeepBeepImAJeep (2715) – Melliasoux (2340), lichess.org, 2020.

6.c4 Ne7 7.Nf3 (7.d4 a6=) 7...Ng6 (7...dc4 8.Bc4 e4 9.Nh4=+) 8.Be2 Be7 9.0-0 0-0 (9...dc4 10.bc6 bc6 11.Qc2=) 10.Nc3 cb5 11.Nd5 bc4 12.Bc4 Kh8 13.d4 Nb6 14.Nb6 ab6? (14...Qb6 15.Qb3 Qb3 16.Bb3+=) 15.Rc1 (15.de5!? fe5 16.Ne5 Ne5 17.Be5 Qe8+-) 15...ed4 (15...e4 16.Nd2 f5 17.Qb3+=) 16.Nd4 Bc5 17.Ne6 (17.Qb3!?+-) 17...Be6 18.Be6 Qd1 19.Rfd1 Rfe8 (better 19...Ra4!? 20.Bb3 Ra7+=) 20.Bd7 Red8 21.Bb5 Kg8 22.Kf1 Kf8 23.Ke2 Ne7 24.Rd8 Rd8 25.Bc3 Nc6 26.Rc2 Ne5 27.Rd2 Rd2 28.Bd2 Ke7 29.f3 Nd7 30.e4 Bd6 31.Bf4?? (better 31.g3+-) 31...Bf4–+ 32.g3 Bd6 33.f4 Bc5 (33...g5 34.Kf3–+) 34.Kf3 f5 (34...g6 35.h4–+) 35.h3 (35.ef5 Nf6 36.Bc4–+) 35...fe4 36.Ke4 Kf6?? (36...Nf6 37.Kf3–+) 37.g4?? (37.Bd7 b5 38.Bb5 b6+-) 37...g6?? (37...Ke7 38.g5–+) 38.Kf3?? (38.Bd7 b5 39.Bb5 h6+-) 38...Kf7?? (38...Nb8 39.h4–+) 39.Bd3?? (better 39.Bd7 b5 40.Bb5+-) 39...h6 40.Bc4 Kg7 41.h4 White intends g5 (41.Bb5 Nf6–+) 41...Kf6 (41...Bb4 42.Bd3–+) 42.g5 (42.g5 hg5 43.hg5 Kg7 44.Kg4–+). BeepBeepImAJeep (2555) – mjuhb (1945), lichess.org, 2018.

6.Be2 Bd6 7.Nc3 (7.Nf3 Ne7 8.Nc3 Qc7 9.bc6 bc6 10.Ba3+=) 7...Ne7 8.Nf3 c5 9.0-0 e4 10.Ne1=.

6.Be2 Nh6 7.Nf3 (7.Nc3 Nf5 8.e4 de4 9.Ne4 Nc5 10.Bf3+=) 7...Bd6 8.Nc3 Qc7 9.Ba3 Ba3 10.Ra3=.

5.a4 Be6

6.Nc3 A) 6...Bb4 7.Nf3 (7.Be2 Ne7 8.Nf3 0-0 9.0-0 Nd7 10.Ba3+=) 7...c5 8.Na2 Ba5 9.Nc1 e4 10.Ng1+=; B) 6...Nh6 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Nf5 10.e4=; C) 6...Bd6 7.Be2 Ne7 8.Nf3 0-0 9.0-0 c5 10.a5+=.

6.c4 dc4 7.Qc2 cb5 8.ab5 Qa5. GuestPPCJ – GuestTFQZ, freechess.org, 2017.

6.bc6 Nc6 7.Be2 (7.Nf3 Bd6 8.Nc3 Nge7 9.Nb5 Bc5 10.d4+=; 7.Nc3 Bb4 8.Qh5 g6 9.Qh4 d4 10.ed4+=; 7.Bb5 Bd6 8.Nf3 Nge7 9.0-0 0-0 10.Ba3+=) 7...Qb6 8.Ba3 Ba3 9.Na3 Nge7 10.Rb1+=.

6.Bd3 A) 6...Nh6 7.Nf3 (7.Ne2 Nd7 8.Ng3 Bd6 9.0-0 0-0 10.Nc3+=; 7.Be2 Nf5 8.d4 Bd6 9.Ba3 a6 10.Nf3+=; 7.Nc3 c5 8.Qh5 g6 9.Qf3 Nf7 10.Nh3+=) 7...c5 8.e4 c4 9.ed5 Bd5 10.Be2=; B) 6...Nd7 7.Be2 (7.Nf3 Bd6 8.Nc3 c5 9.e4 d4 10.Nd5+=) 7...Bd6 8.Nf3 c5 9.d3 Ne7 10.a5+=; C) 6...Ne7 7.a5 (7.Be2 Nf5 8.d4 Bd6 9.Ba3 a6 10.Nf3+=) 7...a6 8.b6 Kd7 9.Be2 Kc8 10.Nf3+=; D) 6...e4 7.Bf1 (7.Be2 Bd6 8.Nc3 Ne7 9.Bh5 g6 10.Be2+=) 7...Bd6 8.d3 Nh6 9.Nd2 ed3 10.Bd3=; E) 6...c5 7.Nc3 (7.Qh5 Bf7 8.Qh3 Nh6 9.Nc3 Be7 10.Be2+=; 7.Be2 Bd6 8.Bh5 g6 9.Be2 Nh6 10.d4+=) 7...Nh6 8.Qh5 g6 9.Qf3 Nf7 10.Nh3+=.

6.d4 Qa5 7.Qd2 (7.Nd2 Nd7 8.de5 fe5 9.Ngf3 Bd6 10.Bd3=; 7.Bc3 Bb4 8.Qd2 Bc3 9.Nc3 Ne7 10.Nf3=) 7...Qd2 8.Nd2 Nd7 9.Be2 Rc8 10.de5=.

6.d4 Bb4 7.Nd2 (7.Bc3 Bc3 8.Nc3 Ne7 9.de5 fe5 10.Nf3+=; 7.c3 Bd6 8.Ba3 Ne7 9.Bd6 Qd6 10.Qh5+=) 7...ed4 8.Bd4 c5 9.Bb2 c4 10.c3=.

6.d4 ed4 7.ed4 Bd6 8.Bd3 Nh6 9.Ne2 0-0 10.0-0 f5 11.f3 (11.Ba3 Ng4 12.h3 Nf6=) 11...Qh4 12.g3 Qg5 13.Bc1 Qf6 14.c3 g5 (14...c5!?=) 15.Ba3 Ba3 16.Na3 Nd7 17.Nc2 (17.f4 g4=) 17...Rac8 18.Qd2 Nf7 19.Rf2 Nd6 20.Re1 Nb6 21.Ra1 (21.Ne3 Na4 22.bc6 Rc6=) 21...Nbc4+= 22.Bc4 Nc4 (22...dc4?! 23.bc6 bc6 24.Re1+=) 23.Qc1 Rfe8 24.Ne3 Ne3 25.Qe3 Bd7 26.Qd3 Re7 27.c4 dc4 28.Qc4 Kg7 29.Qb4 c5 30.Qc3 cd4 31.Qd4 Qd4 32.Nd4 Rc4 33.Re2 Re2 34.Ne2 ½–½. Turczynowicz,Jolanta – Milewski,T, Olsztyn Poland, 1965.

6.d4 Nd7 7.Nf3 (7.de5 fe5 8.Nf3 Bb4 9.Nbd2 Qc7 10.Ng5=) 7...e4 8.Nfd2 Bd6 9.c4 Ne7 10.Nc3=.

6.d4 e4 7.Ne2 (7.Nd2 Nh6 8.Ne2 Bd6 9.Ba3 Ba3 10.Ra3=; 7.Ba3 Ba3 8.Ra3 a6 9.Rb3 Qa5 10.Qd2=) 7...Nh6 8.Nf4 Bg4 9.Be2 Be2 10.Qe2=.

6.Be2 Bd6 (6...c5 7.Bh5 g6 8.Bg4 Qe7 9.Be6 Qe6 10.Nc3=; 6...Nd7 7.Bh5 g6 8.Be2 Bd6 9.Nf3 Ne7 10.0-0=) 7.Nf3 Ne7 8.0-0 c5 9.d3 a6 10.c4 =.

6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 c6 6.a4).

6.f4 A1) 6...ef4 7.ef4 Bd6 8.Ne2 Qd7 9.Nbc3 Ne7 10.bc6+=; B) 6...Nd7 7.Nf3 (7.fe5 fe5 8.Nf3 Bd6 9.Nc3 c5 10.e4+=) 7...Bd6 8.Be2 Nh6 9.0-0 0-0 10.fe5+=; C) 6...Bd6 7.fe5 fe5 8.Nf3 Nd7 9.Nc3 c5 10.e4+=.

6.Qh5 A) 6...g6 7.Qd1 (7.Qe2 Bd6 8.Nc3 Ne7 9.Nf3 c5 10.a5+=) 7...Bd6 8.Be2 Ne7 9.Nf3 Qc7 10.Nc3+=; B) 6...Bf7 7.Qd1 Bd6 8.d4 Ne7 9.Ba3 0-0 10.Bd6+=.

5.a4 Ne7

6.Nc3 A) 6...Be6 7.Nf3 (7.a5 Nf5 8.Nf3 Bd6 9.bc6 Nc6 10.a6+=; 7.Ba3 Nd7 8.bc6 Nc6 9.Bf8 Nf8 10.Rb1=; 7.Bd3 c5 8.a5 a6 9.b6 Nbc6 10.Qh5+=) 7...c5 8.a5 Ng6 9.Be2 Bd6 10.0-0=; B) 6...Bf5 7.a5 (7.Nf3 c5 8.a5 d4 9.ed4 cd4 10.Ne2+=) 7...Ng6 8.Nf3 Bb4 9.a6 ba6 10.bc6=; C) 6...a6 7.Nf3 Bf5 8.Be2 Ng6 9.0-0 Bb4 10.d4=; D) 6...Nf5 7.e4 (7.Bd3 Bc5 8.e4 Ne7 9.Qh5 g6 10.Qf3=) 7...de4 8.Ne4 Be6 9.Nf3 Bb4 10.c3=; E) 6...Ng6 7.Nf3 (7.Qh5 Be6 8.Be2 Qd7 9.Bd3 e4 10.Be2+=) 7...Bb4 8.Be2 0-0 9.0-0 a6 10.Re1+=.

6.c4 dc4 7.Bc4 cb5 8.ab5 Bd7 9.Qb3+= Ng6?? (9...Qb6 10.d4+=) 10.Nf3 (10.Bf7 Ke7 11.Ba3) 10...Bc5 (10...Bd6 11.Bf7 Kf8 12.d4+=) 11.Nc3 a6 (11...Bg4 12.Bf7 Kf8 13.Bd5+/-) 12.0-0 (better 12.ba6 Na6 13.Qb7+-) 12...Ke7? (better 12...Bg4+/-) 13.d4 (13.Ne4 b6 14.Bd5 Bb5 15.Ba8 Bf1 16.Kf1 Qc8+-) 13...ed4 (13...Bd6 14.Ne4 ab5 15.Ra8 bc4 16.Qb7+-) 14.ed4 (better 14.Ne4 b6 15.Nc5 (15.ba6?! de3 16.Nc5 ef2 17.Rf2 bc5+-) 15...bc5 16.ed4+-) 14...Bb6?? (14...Bd6 15.ba6 Na6+-) 15.Nd5 (15.Ba3 Bc5 16.Bc5 Ke8 17.Bf7) 15...Kf8 16.ba6 (16.Ba3 Ke8 17.Rae1 Ne5 18.de5 Bf5 19.ef6 Kd7 20.ba6 Ra6+-) 16...ba6 (16...Bc5 17.dc5 ba6+-) 17.Nb6 (17.Ba3 Ne7 18.Ne7 Qe7 19.Be7 Ke7 20.Rfe1 Be6 21.Re6 Kd8 22.Qb6 Kc8 23.Rc6 Kd7 24.Qb7 Kd8 25.Rc8) 17...Ra7 18.Ba3 Ke8 (18...Ne7 19.Be7 Qe7 20.Nd7 Nd7+-) 19.Rfe1 (19.Bf7) 19...Be6+- 20.Re6 (20.Re6 Re7 21.Qa4 Kf8 22.Nh4 Nh4 23.Re7 Nf3 24.gf3 Qe7 25.Re1 Nc6 26.Qc6 g6 27.Qf6 Ke8 28.Qe7) 1-0. ClayPigeons (2200) - Misterlooser00 (2060), Rated Bullet game, lichess.org, 2020.

6.c4 dc4 7.Bc4= Ng6 8.Nf3 (8.Qb3 Bd6=) 8...Bc5 (better 8...e4!? 9.Ng1 a6=) 9.0-0+= Nd7 10.d4 ed4 11.Nd4 Nb6 (11...Nde5 12.Be2+=) 12.Bb3 Bf5?? (better 12...cb5 13.Nb5 a6+-) 13.Nf5+- Qd1 (13...Bf8 14.Qc2 Qc7 15.Qe4 Ne7 16.Qe6+-) 14.Rd1 (14.Ng7 Ke7 15.Nf5 Ke8 16.Rd1 Ne5+-) 14...Nd7 (14...Bf8 15.a5 Nd7 16.a6 ba6 17.bc6+-) 15.Ng7 Kd8 (15...Ke7 16.Nc3 Rhd8 17.Ne4+-) 16.Ne6 Kc8 17.Rd7! Kd7 Decoy to d7 18.Nc5 Kc7 (18...Kc8 19.Bf6 Rf8 20.Bd4+-) 19.Nc3 (19.Bf6 Rhc8+-) 19...cb5 (19...Rhe8 20.Ne6 Kb8 21.Ba3+-) 20.Nb5 Kb6 (20...Kc6 21.Ne6 Kb6 22.Nec7+-) 21.Bd4 (21.Nd7 Kc6 22.Be6 b6 23.Rc1 Kb7 24.Bd5 Ka6 25.Nc7 Ka5 26.Bc3 Ka4 27.Ra1) 21...Kc6 (21...Rac8 22.Ne6 Ka5 23.Bf6+-) 22.Nd3 (22.Rc1 Ne5 23.Ne6 Nc4 24.Rc4 Kd7 25.Rc7 Ke8 26.Nd6) 22...b6 (22...Kd7 23.Bf6 a6 24.Bh8 ab5 25.Bd4 ba4 26.Ba4 Ke7 27.Nc5+-) 23.Nf4 (23.Rc1 Kd7 24.Rc7 Ke8 25.Nd6 Kd8 26.Rb7 Re8 27.Bf6 Re7 28.Ne5 Ne5 29.Be7) 23...Ne7 (23...Nf4 24.ef4 Rhc8 25.Bf6 a6 26.Rc1 Kd7 27.Rd1 Ke8 28.Re1 Kf8+-) 24.Rc1 Kb7 25.Nd5 (better 25.Nd6 Kb8 26.Bf6+-) 25...Nd5 26.Bd5 Ka6 (26...Kb8 27.Bf6 Rc8 28.Be5 Rc7 29.Rc7 h6 30.Rc5) 27.Ba8 (27.Nc7 Ka5 28.Bc3 Ka4 29.Ra1) 27...Ra8+- 28.Nc7 (28.Nc7 Kb7 29.Na8 Ka8 30.Bf6+-) 1–0. RichardSommer (1705) – mindlessfungames (1770), lichess.org, 2020.

6.Be2 Ng6 7.Nc3 (7.bc6 Nc6 8.Nf3 Be6 9.0-0 Bd6 10.Nc3+=; 7.a5 Bb4 8.Bc3 Bd6 9.Nf3 0-0 10.0-0+=; 7.Ba3 Ba3 8.Ra3 Nh4 9.Bd3 f5 10.Bf1+=) 7...Nh4 8.Bd3 Ng2 9.Kf1 e4 10.Ne4 =.

6.Nf3 a6 7.Be2 ab5 8.ab5 Ra1 9.Ba1 e4 10.Nd4 c5 11.Nb3 c4 12.Nd4 Nf5 13.0-0 Nd4 14.Bd4 Bd7 15.Nc3 Bb4? (better is 15...Be6+/–) 16.Nd5+- Qa5 (16...Bd6 17.Bc4 Bf5 18.f3 ef3 19.Qf3+-) 17.Bc4 (17.Nb4?! Qb4 18.Bh5 g6+-) 17...Be6 (17...h5+-) 18.Nf6! (18.Nf6 gf6 19.Be6 Qb5 20.Bf6+-) 1–0. Hal1958 – GCP, playchess.de, 2004.

6.Nf3 c5 7.d4 e4 8.Nfd2 cd4 9.Bd4 Nf5 10.Bb2 =.

6.Nf3 e4 7.Nd4 (7.Nh4 Qd6 8.bc6 bc6 9.g3 Nd7 10.Nc3+=) 7...c5 8.Nb3 c4 9.Nd4 Nf5 10.Be2 =.

6.Nf3 Nf5 7.d4 (7.Nc3 Bb4 8.Ba3 Ba3 9.Ra3 a6 10.bc6+=; 7.Be2 Bd6 8.0-0 e4 9.Nd4 Nd4 10.Bd4=) 7...e4 8.Nfd2 Be6 9.Be2 a6 10.Ba3 =.

6.Nf3 Ng6 7.Nc3 Bb4 8.Be2 0-0 9.0-0 Be6 10.Ba3 +=.

5.a4 Bf5

6.Nc3 A) 6...Bc5 7.Nf3 Ne7 8.d4 Bd6 9.de5 fe5 10.Be2=; B) 6...Bb4 7.Nge2 (7.Be2 Ne7 8.Nf3 0-0 9.0-0 c5 10.Na2+=; 7.Nf3 Ne7 8.Nh4 Be6 9.Qh5 g6 10.Qh6=) 7...Ne7 8.Ng3 Bg6 9.Be2 0-0 10.0-0=; C) 6...Bd6 7.Nf3 (7.bc6 bc6 8.Nge2 Nd7 9.Ng3 Be6 10.Be2+=; 7.Be2 Ne7 8.Nf3 0-0 9.0-0 Qc7 10.bc6+=; 7.Nge2 Ne7 8.Ng3 Bg6 9.Be2 0-0 10.0-0+=) 7...Ne7 8.Be2 0-0 9.0-0 Qc7 10.bc6+=.

6.c4 Bc5 7.Nf3 Ne7 (7...d4 8.ed4 ed4 9.d3+=) 8.d4= White fights for the initiative 8...Bb4 (8...ed4 9.Nd4 Bb1 10.Qb1 Bb4 11.Ke2 dc4 12.Qc2=) 9.Nc3 (9.Bc3 Bc3 10.Nc3 e4+=) 9...Bc3 (9...e4 10.Nd2=) 10.Bc3+= Nd7 (10...e4!? 11.Nh4 Be6=) 11.de5+/– fe5 12.Ne5 Ne5 13.Be5 Ng6? (better is 13...0-0!?+/–) 14.Bg7+- Rg8 15.Bc3 dc4 (15...Ne7 16.Qh5 Bg6 17.Qe5+-) 16.Bc4 Rf8 17.Bg7 Qe7 (17...Qa5 18.Kf1 Rd8 19.Qb3+-) 18.Bf8 Qf8 (18...Kf8 19.0-0+-) 19.0-0 Rd8 (19...Ne5 20.Qh5 Ke7 21.Rac1+-) 20.Qf3 (20.Qh5 Qb4+-) 20...Qc5 (20...Ne5 21.Qh5 Ke7 22.Rac1+-) 21.Rfc1 (21.Rac1 Ke7+-) 21...Qf8 (21...Ke7 22.Be6! Qc1 23.Rc1 Be6 24.bc6+-) 22.e4 (better is 22.bc6 bc6 23.Qc6 Bd7+-) 22...Ne5 (22...Bd7 23.Qh5 Qe7+-) 23.Qf5 (23.Qh5 Bg6 24.Qe5 Qe7+-) 23...Nc4 (23...Qf5 24.ef5 Ke7 25.Rab1+-) 24.Qf8 Kf8 25.Rc4 cb5 26.ab5 b6 (26...a6 27.Rc7 ab5 28.Rh7+-) 27.f3 (27.Rc7 h6+-) 27...a5 (27...Rd7 28.Rca4 Ke8 29.Ra7 Ra7 30.Ra7+-) 28.ba6 (28.ba6 b5 29.Rc7+-) 1–0. Dessing,Bastiaan – Van Bokhorst,Friso, Hengelo op U12, 2001.

6.c4 Bd6 7.Nf3+=.

6.bc6 Nc6 7.Nc3 (7.Nf3 Rc8 8.Ba3 Ba3 9.Na3 Nge7 10.Rb1+=; 7.Be2 Qb6 8.Ba3 Nb4 9.Bb4 Bb4 10.Bb5+=; 7.Bb5 a6 8.Be2 Rc8 9.Nc3 Nb4 10.Rc1–+) 7...Bb4 8.Nf3 Nge7 9.Bb5 0-0 10.0-0 +=.

6.d4 A) 6...Bb4 7.c3 (7.Bc3 Bd6 8.de5 fe5 9.Nf3 Qf6 10.Nbd2+=) 7...Ba5 8.Nf3 Nd7 9.Be2 Ne7 10.0-0=; B) 6...Nd7 7.Nf3 (7.c4 Rc8 8.Nd2 Bb4 9.Rc1 cb5 10.ab5=) 7...e4 8.Nfd2 Bd6 9.c4 Ne7 10.Nc3=; C) 6...Bd6 7.c4 (7.de5 fe5 8.Nf3 Nd7 9.c4 Ngf6 10.Nc3+=; 7.Be2 Ne7 8.Nf3 e4 9.Nfd2 Qc7 10.c4=) 7...Bb1 8.Qb1 Qa5 9.Kd1 Ne7 10.c5+=; D) 6...ed4 7.Bd4 Bb4 8.c3 Bd6 9.c4 Ne7 10.c5=; E) 6...Qa5 7.Bc3 Bb4 8.Qd2 Bc3 9.Nc3 ed4 10.ed4=.

6.Be2 Bd6 7.Nc3 Ne7 8.Nf3 0-0 9.0-0 Qc7 10.bc6 +=.

6.Be2 Bd6 7.Nf3 Ne7 8.0-0 a6 9.d4 e4 10.Nh4 +=.

6.Be2 Bd6 7.Nf3 Ne7 8.0-0 cb5 9.d4 e4 10.Bb5 Nbc6 11.Nfd2 =+.

6.Be2 Bd6 7.Nf3 Ne7 8.0-0 Bc7 9.d3 Qd6 (9...0-0 10.Nbd2=) 10.Ba3 c5 11.e4 (11.d4 Nd7=) 11...Bg4 (11...de4!? 12.de4 Be4+=) 12.Nbd2 Bf3 (12...0-0 13.ed5 Bf3 A) worse is 14.Bf3 A1) 14...Nd5? 15.Ne4 Qd8 16.Nc5+- (16.Bc5?! Rf7+-); A2) 14...e4 15.g3 ef3–/+; B) 14.gf3 e4 15.f4 Qf4 16.d6 Bd6 17.Nf3 ef3 18.Re1 Qh2 19.Kf1 Qg2; C) 14.Nf3 Nd5 15.d4 ed4 16.Qd4 cd4 17.Bd6 Bd6 18.Bc4+/–) 13.Nf3 (worse is 13.gf3 f5+=) 13...g5 (13...0-0 14.Qd2+=) 14.Nd2 (14.c4 d4+/–) 14...Nd7 15.Re1 (15.c4 d4+=) 15...Nb6 (15...0-0-0 16.ed5 Nd5 17.Ne4+=) 16.c3 (16.ed5 f5+/–) 16...0-0 17.Qb3 (17.ed5 f5 18.c4 Nd7+/–) 17...Ng6 (17...f5+/–) 18.d4 (better is 18.ed5 e4 19.g3 ed3 20.Bd3+-) 18...ed4= The mate threat is Qxh2 19.Nf1 dc3 20.Qc3 (20.a5 Nd7 21.Qc3=) 20...de4 (better is 20...Qf4!? 21.Qc5 Be5+= (21...de4? 22.a5+-)) 21.Bc5+/– Qe5 22.Qe5 (22.Qb3 Qd5 23.Qd5 Nd5 24.Bc4+- (24.Bf8 Kf8 25.Bc4 Nb6+-)) 22...Be5+= (worse is 22...Ne5 23.Bf8 Rf8 24.Red1+/–) 23.Bf8 Ba1 24.Bc5 (better is 24.Bb4 Nf4 25.a5 Ne2 26.Re2=) 24...Bc3–/+ 25.Rc1 Na4 (25...Bb2 26.Rc2 Na4 27.Be3–/+) 26.Bc4 (26.Be3 Be5 27.f3 ef3 28.Bf3 Nc3–/+) 26...Kg7 (26...Kh8 27.Be3 Be5 28.Ng3–/+) 27.Ba3 (27.Bd6 Ne5 28.Bb3 Nd3+=) 27...Bb2 (better is 27...Be5!?–+) 28.Bb2+= Nb2 29.Bd5 f5 (29...Nf4 30.Rc7 Kh8 31.Bb7 Ne2 32.Kh1+=) 30.Bb7 Rb8 31.Bc6 (31.Rc7 Kf6+=) 31...Nd3 (31...Rc8 32.Ra1 Rc7 33.g4 fg4 34.Ng3–/+) 32.Ra1+= Nb4 (32...Kf6 33.Ra7 Ne7 34.f3+=) 33.Ra7= Kh6 (33...Kf6 34.Rd7=) 34.Rb7 (34.Ne3 Nh4+/–) 34...Nc6 35.bc6 Rc8 (35...Ra8+/–) 36.c7 (better is 36.Ne3!? Nh4 37.c7+-) 36...Ne7= 37.Ne3 (37.g3 Kg6 38.Ne3 f4=) 37...f4 38.Nc4 Nd5 39.Nd6 Rc7 40.Rc7 Nc7 41.Ne4 ½–½. Roitzsch,Hans Werner – Mette,Ingmar, GER North–ch U12, 2001.

6.Be2 Nd7 7.Nf3 (7.Nc3 Bd6 8.Nf3 Ne7 9.0-0 0-0 10.Re1+=) 7...Bd6 8.0-0 Ne7 9.Ba3 c5 10.d4 +=.

6.Be2 Nh6 7.Nf3 Bd6 8.0-0 0-0 9.Nc3 a6 10.bc6 =.

6.Nf3 Bd6 7.d4 (7.Nc3 Ne7 8.Be2 0-0 9.0-0 Qc7 10.bc6+=; 7.Be2 Ne7 8.0-0 0-0 9.c4 Be6 10.Qc2=) 7...e4 8.Nfd2 Ne7 9.c4 0-0 10.c5 =.

6.Qh5 Bg6 7.Qd1 Bd6 8.Be2 Ne7 9.Nf3 Nd7 10.Nh4 Bf7 11.Bh5 (11.0-0 0-0+=) 11...g6 (11...0-0 12.Bf7 Rf7 13.0-0+=) 12.Bg4 f5 (12...Nb6 13.0-0+=) 13.Be2= 0-0 14.Nf3 e4 15.Ng5 Be5 (15...f4 16.Nf7 Rf7 17.Nc3+=) 16.Be5 Ne5 17.d4 (17.0-0 Qd6=) 17...ed3 18.cd3 Ng4 (18...d4 19.0-0=) 19.Nf7 (19.Bg4 Qa5 20.Nd2 fg4 21.Qg4 Nf5+/–) 19...Rf7 20.Nd2 (20.Bg4 fg4 21.bc6 Nc6=) 20...Nf6 (20...d4 21.Nc4=) 21.Nf3 (21.0-0 f4 22.e4 Qd6+=) 21...Qa5 (21...Qd6 22.d4=) 22.Qd2+= Qd2 Black gets the initiative 23.Kd2 Ng4 (23...Rc8 24.Ne5 Rg7 25.Rab1+=) 24.Ng5 (24.h3 Nf6+/–) 24...Rff8 (24...Nf2? 25.Rhf1 (25.Nf7?! Nh1 26.Nd6 Nf2+/–) 25...Nd3 26.Nf7+-) 25.Ne6 (25.h3 Nf6+=) 25...Rf6 (25...Nf2 26.Rhf1 Rf6 27.Nc5+=) 26.Nc7 (better is 26.bc6 bc6 27.Nc5+/–) 26...Rc8–/+ 27.b6 (better is 27.h3!? Nh6 28.g4 fg4 29.hg4–+) 27...ab6–+ (27...Nf2 28.ba7 Nh1 29.a8Q Ra8 30.Na8=) 28.h3 Ne5 (28...Rc7?! 29.hg4 fg4 30.Rhf1–/+) 29.d4 (29.f4 Nd7 (29...Rc7?! 30.fe5 Re6 31.d4+=) 30.Nb5 cb5 31.ab5 Rd6–+) 29...Nd7 (better is 29...Nc4 30.Bc4 dc4–+ (30...Rc7?! 31.Bb3+=)) 30.Rhc1? (better is 30.Nb5 cb5 31.Bb5–+) 30...Rc7 31.f4 (31.g3 g5–+) 31...Rf8 (31...Re6 32.Rab1–+) 32.g4 Ra8 33.gf5 Nf5 34.Bg4 (34.Rcb1 Re8 35.Bd3 c5 36.Bf5 gf5 37.Rg1 Kf7–+) 34...Nf6 35.Bf3 (35.Rcb1 Ne4 36.Kd3 Ra6–+) 35...Nh4 (35...Re7!? 36.Re1–+) 36.Bh1 (36.Bg4–+) 36...Nf5 (better is 36...Re7 37.Rcb1–+) 37.Rg1?? (37.Bf3 Re7 38.Re1–+) 37...Ne4 (37...Re7 38.Rge1–+) 38.Ke2 Neg3 39.Kd3 Nh1 40.Rh1 Re7 41.Rae1 Rae8 42.e4 Re4 43.Re4 Re4 44.Rg1 Rd4 45.Kc3 Ra4 46.h4 Rf4 47.h5 Kf7 48.hg6 hg6 49.Re1 b5 50.Re2 d4 51.Kd3 Rf3 52.Ke4 Re3 53.Re3 de3 (53...de3 54.Kf3 b4–+) 0–1. HeresJhonny – Wookie2009, Caissa.com, 2004.

5.a4 Nh6

6.Nc3 Bb4 +=.

6.c4 Be6 7.Nf3 (7.cd5 cd5 8.d4 Bb4 9.Bc3 Bd6=) 7...Bb4 (7...dc4 8.Qc2 cb5 9.ab5+=) 8.Be2 (8.cd5 cd5 9.Be2 Qd6=) 8...0-0 (8...dc4 9.Na3 cb5 10.ab5 Ba3 11.Ra3–/+) 9.0-0 (9.Qb3 c5=) 9...Nd7 (9...dc4!? 10.Na3 cb5 11.ab5 Qc7–/+) 10.d4 e4 11.Nfd2 f5 12.Ba3 Ba3 13.Ra3 Ng4 14.f3 ef3 15.gf3 Ne3 16.Re3 Qg5 17.Kf2 Rf6 (better is 17...Qh4!? 18.Kg2 Qg5 19.Kf2 Qh4 20.Kg2 Qg5 21.Kf2=) 18.f4+/– Qf4 19.Nf3 dc4 20.Re6 Re6 21.Bc4 Qe3 22.Kg2 Kh8 23.Be6 Qe6 24.Nc3 Nf6 25.Re1 Qc4 26.Qd2 h6 (26...cb5!? 27.Ne5 Qb3 28.Rb1+-) 27.Ne5 Qb3 28.Rb1 Qe6 29.Qa2 Nd5 (29...Qa2 30.Na2 cb5 31.Rb5+-) 30.Nd5 cd5 31.Rc1 Rf8 (31...Kh7 32.a5+-) 32.Qa3 (32.Rc7 f4 33.Qc2 Kg8+-) 32...Kg8 33.Rc7 Re8 (33...a6 34.Qg3 g5 35.Rb7 ab5 36.Rb5+- (worse is 36.ab5 Qc8 37.Rb6 Qc2 38.Qf2 Qe4 39.Kg1 Ra8 40.Rg6 Kh7+-)) 34.Rd7 (34.Rb7 Qc8 35.Ra7 Qc2 36.Kh3 Qe2+-) 34...Qf6 (34...Qb6 35.Rd5 Qf6 36.Rd7+-) 35.Qg3 (35.Qf3 Qg5 36.Kh3 b6+-) 35...g5 (35...Re7 36.Rd5 Kh7 37.a5+-) 36.Rf7 (better is 36.Rb7!? a6+-) 36...Qb6 37.Qd3?? (better is 37.Rf5 Qd4 38.Rg5 Kh8 39.Rg6 Qe4 40.Kh3 Qf5 41.Kh4 Qe4 42.Rg4 Qe5 43.Rg8 Rg8 44.Qe5 Kh7 45.Qd5+-) 37...Re5= 38.de5 Kf7 39.Qf5 Kg7 (better is 39...Ke7!?+=) 40.Qd7+/– ½–½. Jamieson,Ian (2000) – Surtees,Michael (2145), Paington op, 2009.

6.d4 Bb4 7.Nd2 Nd7 8.Qh5 Nf7 9.c3=+.

6.d4 e4 7.c4= cb5 8.ab5 Bb4 (8...Bg4 9.Qc2=) 9.Bc3+= Bc3 (9...Be7 10.Qh5 Nf7 11.Qd5 (worse 11.cd5 g6 12.Qd1 Qd5=) 11...Qd5 12.cd5+/-) 10.Nc3+/- Be6 11.Qb3 dc4 (11...f5!?+/-) 12.Bc4+- Bc4 13.Qc4 f5 (13...Nd7 14.Qd5 f5 15.Qb7 0-0+-) 14.Nge2 (better 14.Nd5 Kd7 15.Qc5+-) 14...Nd7+/- 15.0-0 Rf8 (15...Nf6 16.Qc5 Qd7 17.Rfd1+/-) 16.Nf4 (16.Nd5 Rc8 17.Qb3+-) 16...Rc8? (better 16...Nb6!? 17.Qe6 Qe7+/-) 17.Qe6+- Qe7 18.Ncd5 Qe6 19.Ne6 Rf7 20.Ra7 Nf6 21.Nf6 (21.Ng7 Rg7 22.Nf6 Kd8+-) 21...gf6 22.b6 Rc6 (22...Kd7 23.Nc7 Kc6 24.Rb1+-) 23.Nc7 Kd7 (23...Rfc7 24.bc7 Rc7 25.Rb1+-) 24.Rb1 (24.Rb7?! Kc8 25.d5 Rd6+-) 24...Kc8 25.Ra8 Kd7 26.Rb8 f4 27.Rb7 Kc8 28.Ra7 Rcc7 (28...Rfc7 29.bc7 Rc7 30.Rc7 Kc7 31.ef4+-) 29.bc7 (29.Ra8 Kb7 30.bc7 Kc7 31.ef4 Rd7+-) 29...Rc7 30.Rc7 Kc7 31.ef4 f5 (31...Nf5 32.Kf1+-) 32.f3 (32.Rb5!? Kc8+-) 32...ef3 33.gf3 (33.Ra1 Ng8 34.Ra7 Kd6 35.Rh7 fg2+-) 33...Nf7 (33...Ng8 34.Kf2 Ne7 35.Kg3+-) 34.Kf2 Kc6 35.Ke3 Nd6 36.Rc1 Kd7 37.d5 h5 (37...Nf7 38.Rc6+-) 38.Kd4 Ke7 39.Ke5 Kd7 40.Rc6 (40.Rc6 Nb7 41.Rh6+-) 1-0. Mely (2265) - trikazhipuram (2040), ChessWorld.net, 2016.

6.Qh5 g6= 7.Qd1 Bg7 (7...Bd6 8.Nc3+=) 8.Nf3 (8.Be2 c5=) 8...0-0 (8...e4 9.Nd4=) 9.Be2 (9.Ba3 Rf7=) 9...Bg4 (9...e4 10.Nd4=) 10.0-0 Kh8 (10...e4 11.Ne1=) 11.h3 (11.Nc3 f5=) 11...Be6 (11...Bf3 12.Bf3 (worse is 12.gf3 f5+=) 12...f5 13.d4=) 12.d4 (12.Ba3 Re8=) 12...e4 13.Nh2 (13.Nfd2 a6=) 13...f5 (13...Qc7 14.Nc3=) 14.Nc3 (14.f3 Qg5 15.Qd2 Nd7=) 14...Nd7 (14...f4 15.ef4 Rf4 16.Bc1+=) 15.bc6 (15.a5 cb5 16.Nb5 a6+=) 15...bc6 16.Ba3 Re8 17.Rb1 (17.Bd6 Nf7 18.Bg3 h5=) 17...Nf7 (17...f4 18.Ng4+=) 18.Qd2= Rc8 (18...Qf6 19.Rb7=) 19.f4 (19.Rb7 Rc7 20.Rfb1 Rb7 21.Rb7 Qa8=) 19...Nb6 (19...c5 20.dc5 Nc5 21.Rfd1=) 20.a5 Nc4 (20...Nd7 21.Na4=) 21.Bc4 dc4 22.Na4 Bd5 (22...Nd6 23.Bc5=) 23.Nc5+= Rc7 (23...Qh4 24.Rb4=) 24.a6 Bf8 (24...Qh4 25.Qf2 Qf2 26.Kf2+=) 25.Nb7+/– Qf6 26.Bf8 Rf8 27.Qa5 Rfc8 (27...Rcc8 28.Rb2+/–) 28.Qc5 Ra8 29.c3 Qe7 (29...Rd7 30.Qa5+=) 30.Qa5 (30.Qe7 Re7 31.g4 Rb8+/–) 30...Nd6 31.Rb4 (better is 31.Nc5+/–) 31...Nb7+= 32.ab7 Rb7 33.Rfb1 (33.Rb7 Qb7 34.Ra1 Qb5+=) 33...Rab8 (33...Rb4 34.Rb4 g5 35.fg5 Qg5 36.Nf1–/+) 34.Rb7+= Rb7 35.Rb7 Qb7 36.Qd8 Bg8 (36...Kg7 37.Qd6+=) 37.Qf6= Qg7 38.Qc6 Qf7 (38...Qe7 39.Nf1=) 39.Nf1 (39.d5 h6 40.d6 Qf6+/–) 39...Qe6 (39...Kg7 40.Qd6+=) 40.Qc7 (40.Qc5 a6=) 40...Qf7 (40...a6 41.Nd2 Bf7 42.Qa5=) 41.Qe5 Qg7 42.Qb8 Qf7 (42...h6 43.Nd2 Qf7 44.Qe5 Kh7 45.Kh2=) 43.Nd2 (43.g4 a6+=) 43...Kg7= 44.Nb1 (44.Qe5 Qf6 45.Qc5=) 44...a5 (better is 44...Qe7!?=) 45.Qe5+/– Kh6 46.Qa5 Qb7 47.Qb4 Qd5 48.Na3 g5 49.fg5 Kg5+/– 50.Nb5 f4? 51.Qe7+- Kh5 52.Nc7 Qf5 53.Ne8 Qa5 54.Nf6 Kg6 55.Ng8 Qc3 56.Qf6 Kh5 57.Qh6 1–0. mic (2100) – abhailey (2250), net–chess.com, 2008.

5.Nc3 a6

6.a4 Bb4 7.Bd3 Ne7 8.Qh5 g6 9.Qh4 Qd6 10.e4+=.

6.a4 Bb4 7.Be2 Ne7 8.Bh5 g6 9.Be2 b6 10.Nf3+=.

6.a4 Bb4 7.Nf3 Ne7 8.Be2 0-0 9.0-0 b6 10.Ne1+=.

6.a4 Bb4 7.f4 Bd6 8.bc6 bc6 9.fe5 fe5+=.

6.a4 Bb4 7.f4 Nh6 8.Qh5 Nf7 9.Nf3 ef4 10.ef4+=.

6.a4 Bb4 7.Qh5 g6 8.Qh4 Qd6 9.Na2 Ba3 10.Rb1+=.

6.a4 b6 7.d4 e4 8.f3 ef3 9.bc6 Bb4 10.Nf3+=.

6.a4 b6 7.d4 e4 8.f3 ef3 9.Nf3 Bb4=.

6.a4 b6 7.Be2 Bb4 8.f4 Ne7 9.fe5 fe5 10.Nf3+=.

6.a4 b6 7.Nf3 Bb4 8.Be2 Ne7 9.0-0 0-0 10.Re1+=.

6.a4 b6 7.f4 ef4 8.ef4 Bf5 9.g4 Qe7 10.Kf2=.

6.a4 Bd6 7.bc6 bc6 8.Ba3 Ne7 9.Qh5 g6 10.Qf3=.

6.a4 Bd6 7.bc6 bc6 8.Rb1 Ne7 9.Qh5 g6+=.

6.a4 Bd6 7.Be2 Ne7 8.Bh5 g6 9.Be2 0-0 10.Nf3+=.

6.a4 Bd6 7.Nf3 e4 8.Nd4 ab5 9.ab5 Ra1 10.Ba1=.

6.a4 Be6 7.Be2 d4 8.ed4 ed4 9.Ne4 ab5=.

6.a4 Be6 7.Nf3 Bd6 8.Be2 Ne7 9.0-0 Qc7 10.ba6+=.

6.a4 Be7 7.Bd3 Be6 8.Qh5 Bf7 9.Qg4 g6=.

6.a4 Bf5 7.Be2 d4 8.ed4 ed4 9.Nb1 ab5 10.ab5=.

6.a4 Bf5 7.Nf3 Ne7 8.bc6 Nec6 9.Be2 d4=.

6.a4 Bf5 7.Nf3 Ne7 8.Be2 b6 9.0-0 Ng6 10.d4=.

6.a4 Nh6 7.Nf3 Bb4 8.Be2 0-0 9.0-0 b6+=.

6.bc6 Nc6 7.a4 Bf5 8.Nge2 d4 9.ed4 ed4 10.Nb1+=.

6.bc6 Nc6 7.Be2 b5 8.a3 Be6 9.Bg4 f5+=.

6.bc6 Nc6 7.Be2 b5 8.Nf3 e4 9.Nd4 Nd4 10.ed4+=.

6.bc6 Nc6 7.e4 d4 8.Nd5 f5 9.Bd3 Nf6 10.Nf6+=.

6.bc6 Nc6 7.Nf3 b5 8.e4 d4 9.Nd5 f5 10.Qe2+=.

6.bc6 Nc6 7.f4 b5 8.Qh5 g6 9.Qd1 Bc5 10.Nce2+=.

5.Nc3 Bd6

6.a4 Nd7 7.Ba3 Ba3 8.Ra3 Qe7 9.Ra1 d4=.

6.a4 Nd7 7.Be2 Ne7 8.Nf3 Qc7 9.bc6 bc6 10.Ba3+=.

6.a4 Nd7 7.Nf3 Ne7 8.Be2 Qc7 9.bc6 bc6 10.Ba3+=.

6.a4 Be6 7.a5 Ne7 8.Qh5 g6 9.Qd1 0-0+=.

6.a4 Be6 7.Be2 c5 8.Bh5 g6 9.Bg4 f5 10.Bf3+=.

6.a4 Ne7 7.Qh5 g6 8.Qf3 0-0 9.Rb1 Be6+=.

6.a4 Bf5 7.Nf3 (7.bc6 bc6 8.Nge2 Nd7 9.Ng3 Be6 10.Rb1+=; 7.Be2 Ne7 8.Nf3 0-0 9.0-0 Qc7 10.bc6+=) 7...Ne7 8.Be2 0-0 9.0-0 Qc7 10.bc6+=.

6.Rb1 Be6 7.Qh5 (7.Be2 Ne7 8.Bh5 g6 9.Bg4 f5 10.Bf3+=; 7.Nf3 c5 8.d4 cd4 9.ed4 e4 10.Nd2+=; 7.Bd3 Ne7 8.Qh5 Bf7 9.Qg4 0-0 10.Qh3+=) 7...g6 8.Qh4 a6 9.Qa4 Ne7 10.Ba3=.

6.Rb1 Ne7 7.Qh5 g6 8.Qf3 Nd7 9.e4 d4 10.bc6=.

6.bc6 bc6 7.Be2 (7.Qh5 g6 8.Qd1 Ne7 9.Rb1 0-0 10.Nf3=; 7.Nf3 Ne7 8.Be2 0-0 9.Rb1 Nd7 10.e4+=; 7.Rb1 Ne7 8.Qh5 g6 9.Qd1 0-0 10.Nf3=; 7.e4 d4 8.Na4 Be6 9.c3 c5 10.Bb5=) 7...Nh6 8.Nf3 0-0 9.0-0 Qc7 10.e4=.

6.Bd3 A) 6...e4 7.Be2 (7.Bf1 Ne7 8.bc6 bc6 9.d3 Be5 10.Rb1+=) 7...Ne7 8.d3 Qa5 9.Qd2 ed3 10.Bd3=; B) 6...Ne7 7.a3 (7.Rb1 0-0 8.Qh5 g6 9.Qd1 Be6 10.Be2+=; 7.Qh5 g6 8.Qh4 e4 9.Be4 de4 10.Ne4–/+; 7.bc6 Nbc6 8.e4 d4 9.Nb5 Be6 10.Nf3+=; 7.Rc1 0-0 8.Rb1 a6 9.bc6 Nbc6 10.e4–/+) 7...0-0 8.Rb1 Qa5 9.bc6 Nbc6 10.e4+=.

6.Be2 Ne7 7.Nf3 0-0 8.0-0 a6 9.bc6 Nbc6 10.a4+=.

6.Be2 Ne7 7.Nf3 a6 8.a4 0-0 9.0-0 Qc7+=.

6.Be2 Ne7 7.Bh5 g6 8.Bg4 0-0 9.Nh3 a6 10.a4+=.

6.Qf3 A) 6...Be6 7.bc6 (7.Qh5 g6 8.Qf3 Nd7 9.bc6 bc6 10.Rb1+=; 7.Be2 Ne7 8.Qh5 g6 9.Qh4 Nf5 10.Qa4+=; 7.Rb1 Ne7 8.Qh5 g6 9.Qh4 0-0 10.Be2+=) 7...bc6 8.Rb1 Ne7 9.Qh5 g6 10.Qd1+=; B) 6...Ne7 7.Qh5 (7.bc6 bc6 8.Rb1 0-0 9.a3 Be6 10.e4+=; 7.Rb1 Be6 8.Qh5 g6 9.Qh4 0-0 10.Be2+=) 7...g6 8.Qf3 Nd7 9.Rb1 Rb8 10.e4+=; C) 6...Nh6 7.bc6 bc6 8.Nd5 cd5 9.Qd5 Qb6 10.Ba3+=.

6.Nf3 Ne7 7.bc6 (7.Be2 a6 8.ba6 Na6 9.0-0 0-0 10.a4+=) 7...Nbc6 8.Nb5 0-0 9.Nd6 Qd6 10.Be2+=.

6.Qh5 g6 7.Qh4 (7.Qf3 Be6 8.bc6 bc6 9.e4 d4 10.Nd1+=) 7...a6 8.bc6 bc6 9.Bd3 e4 10.Be2=.

5.Nc3 Be6

6.Bd3 a6 7.a4 b6 8.Nf3 Bb4 9.0-0 Ne7 10.e4+=.

6.Bd3 a6 7.a4 e4 8.Be2 Bd6 9.f3 Be5=.

6.Bd3 c5 7.a3 Ne7 8.Be2 Ng6 9.Rb1 d4 10.Ne4+=.

6.Bd3 c5 7.a4 c4 8.Be2 Bb4 9.Bh5 g6 10.Bg4=.

6.Bd3 c5 7.Be2 Bd6 8.e4 d4 9.Nd5 Bd5 10.ed5+=.

6.Bd3 c5 7.f4 Nh6 8.fe5 fe5 9.Qh5 Nf7+=.

6.Bd3 c5 7.Qh5 Bf7 8.Qd1 Nh6 9.Qf3 Qd7 10.Be2+=.

6.Be2 a6 7.a4 d4 8.ed4 ed4 9.Ne4 f5 10.Ng3=.

6.Be2 a6 7.bc6 Nc6 8.Nf3 Bd6 9.0-0 Nge7+=.

6.Be2 cb5 7.Bb5 Nc6 8.f4 Bd6 9.Nf3 Nh6=.

6.Be2 c5 7.Bh5 g6 8.Bg4 f5 9.Bf3 Bg7=.

6.Be2 Nh6 7.Nf3 Bd6 8.a4 0-0 9.0-0 a6 10.ba6+=.

6.Nf3 a6 7.a4 Bd6 8.Be2 Ne7 9.0-0 Qc7 10.ba6+=.

6.Nf3 a6 7.ba6 Na6 8.Be2 Bd6 9.a4 Ne7 10.Ba3+=.

6.Nf3 a6 7.bc6 Nc6 8.Be2 b5 9.0-0 b4 10.Nb1=.

6.Nf3 a6 7.bc6 Nc6 8.Be2 Bd6 9.0-0 Nge7+=.

6.Nf3 c5 7.a3 Bd6 8.Be2 Ne7 9.0-0 0-0 10.d3+=.

6.Nf3 c5 7.Be2 Bd6 8.0-0 Ne7 9.d3 0-0+=.

6.Nf3 Bd6 7.Bd3 Ne7 8.Be2 0-0 9.0-0 c5 10.d3+=.

6.Nf3 Bd6 7.Be2 Ne7 8.0-0 0-0 9.a4 a6+=.

6.Nf3 Bd6 7.Be2 Ne7 8.0-0 0-0 9.bc6 Nbc6 10.Nb5+=.

6.Nf3 Nh6 7.Be2 Bd6 8.a4 0-0 9.0-0 Nf5=.

6.Nf3 Nh6 7.Be2 Bd6 8.a4 c5 9.0-0 0-0 10.a5+=.

6.Qh5 Bf7 (6...g6 7.Qd1 a6 8.a4 Ne7 9.f4 ab5=) 7.Qd1 a6 8.a4 Bd6 9.Qg4 Bg6+=.

6.Be2 Bd6

7.a4 c5 8.Bh5 g6 9.Bg4 f5 10.Bf3+=.

7.Rb1 Ne7 8.Bh5 g6 9.Bg4 f5 10.Bf3+=.

7.Nf3 Ne7 8.0-0 0-0 9.a4 c5+=.

7.Nf3 Ne7 8.a4 0-0 9.0-0 a6 10.Re1+=.

7.Bh5 g6 8.Bg4 f5 9.Be2 a6 10.bc6+=.

5.Nc3 Ne7

6.Nf3 a6 7.a4 Bf5 8.Be2 Ng6 9.0-0 Bb4 10.d4=.

6.Nf3 a6 7.ba6 Na6 8.Be2 b5 9.0-0 e4+=.

6.Nf3 a6 7.bc6 Nbc6 8.Be2 e4 9.Nh4 b5 10.d3+=.

6.Nf3 c5 7.Be2 e4 8.Nh4 Be6 9.d3 ed3=.

6.Nf3 Bf5 7.Be2 a6 8.bc6 Nbc6 9.0-0 b5=.

6.Nf3 Bf5 7.Be2 cb5 8.Bb5 Nbc6 9.0-0 a6 10.Be2=.

6.Qh5 g6 7.Qf3 Bg7 8.Rb1 a6 9.bc6 Nbc6+=.

6.Qh5 g6 7.Qf3 Bg7 8.Be2 a6 9.a4 Bf5 10.e4+=.

5.Nc3 Bf5

6.Nf3 a6 7.a4 Ne7 8.Be2 b6 9.0-0 Ng6 10.bc6=.

6.Nf3 a6 7.a4 Ne7 8.Nh4 Bd7 9.Bd3 Be6 =.

6.Nf3 a6 7.bc6 Nc6 8.Be2 b5 9.0-0 Nh6 10.d4=.

6.Nf3 c5 7.a3 d4 8.ed4 cd4 9.Ne2 Nd7 10.Ng3=.

6.Nf3 c5 7.d4 cd4 8.ed4 e4 9.Nd2 Be6 10.Ne2=.

6.Nf3 c5 7.Be2 d4 8.Nb1 Nh6 9.0-0 Bd6=.

6.Nf3 c5 7.Be2 d4 8.Nb1 Nh6 9.0-0 Qd7 10.a4=.

6.Nf3 Be7 7.d4 e4 8.Nd2 a6 9.bc6 Nc6=.

6.Nf3 Ne7 7.Be2 cb5 8.Bb5 Nbc6 9.0-0 a6=.

6.Nf3 Nh6 7.Be2 a6 8.a4 ab5 9.ab5 Ra1=.

6.Nf3 Nh6 7.Be2 a6 8.bc6 Nc6 9.0-0 b5 10.d4=.

5.c4 a6

6.a4 ab5 7.ab5 cb5?? (better is 7...Ra1 8.Ba1 Bf5+=) 8.Ra8+- Na6 9.cb5 (9.cd5 Nc7 10.Rb8 Bd6+-) 9...Nc5 (9...Nc7 10.Ra4+-) 10.d4 Ne6 (10...Ne4 11.Bd3+-) 11.de5 fe5 (11...Nc7 12.Rb8+-) 12.Be5 (12.Qh5 Ke7+-) 12...Ne7 (12...Bb4 13.Nd2 Nh6 14.Bd3+-) 13.Bd3 Ng6 (13...Qd7 14.Qh5 Kd8 15.Nc3+-) 14.Bc3 Qd7 (14...Be7 15.Bf5 Kf7 16.Nf3+-) 15.Nd2 (better is 15.Qh5 Rg8+-) 15...Nc7 (15...Be7 16.Bf5 0-0 17.Qg4+-) 16.Rb8 b6 (16...Bc5 17.Bg7! Rg8 18.Bg6 hg6 19.Qc2+-) 17.Ngf3 (better is 17.Qh5 Rg8 18.Qh7 Ne7+-) 17...Kf7 (17...Bd6 18.Bg7! Qg7 19.Rc8 Kf7 20.Rh8 Qh8+-) 18.Bg6 hg6 19.Ne5 Kg8 20.Nd7 Bd7 21.Qf3 Ne6 22.Rf8! Nf8 23.Qd5 Be6 24.Qb7 (better is 24.Qe5 Rh7+-) 24...Rh5 25.Qg7 1–0. GuestCMWC – GuestYLZL, freechess.org, 2017.

6.bc6 Nc6 7.cd5 Qd5 8.Nc3 Qa5 9.Qb3 Bb4 10.Nf3 Nge7 11.Bc4 b5 12.Be2 Bf5 13.a4+= Bc3 14.ab5+/– (14.ab5 Qd8 15.Bc3 ab5 16.Ra8 Qa8 17.Qb5+/–; 14.Bc3?! b4 15.Bb2 Be4=; 14.Qc3?! Qc3 15.dc3 ba4 16.Ra4 a5=) 1–0. pcmvr (2870) – cczekaj (2385), net–chess.com, 2009.

5.c4 Bb4

6.a4 Ne7=+ 7.Qb3 a5 8.ba6 (8.Nc3 Nd7=+) 8...Na6-/+ 9.cd5 Qd6 (better 9...Nd5!? 10.Nc3 Nc5-/+) 10.dc6= Nc6 11.Bb5 Be6 12.Bc4? (12.Qc2 Nc5 13.Nc3 0-0=) 12...Bc4 (better 12...Nc5!? 13.Qc2 Bc4 14.Qc4 Nd3 15.Ke2 Nb2-+) 13.Qc4=+ Rc8 (13...Nc5 14.Bc3=+) 14.Qa2 (14.Nf3!?=) 14...Nc5-/+ 15.Nf3 (15.Bc3 Nd3 16.Kf1 Qd7=+) 15...Nd3 (15...e4 16.Nh4 Nd3 17.Kf1-+) 16.Ke2-/+ e4 17.Nd4?? (better 17.Ne1 Nce5 18.Nc3 Bc3 19.Bc3-+) 17...Nd4 18.Bd4 (18.ed4 Qa6 19.Kd1 Nf2 20.Ke1 Nh1 21.Qd5-+) 18...Bc5 (better 18...Qa6 19.Nc3 Nc1 20.Kd1 Na2 21.Ra2 Qd3-+) 19.Bc5? (19.Qc4 Qd7 20.Qb5 Rc6=) 19...Nc5?? (better 19...Qa6 20.Qa3 Nc5 (20...Rc5?! 21.Nc3=) 21.Kd1 Nd3-+) 20.Nc3 Qd3 21.Ke1 Ke7 (21...f5 22.Rb1=) 22.Nd5 (22.f3 Rhd8+=) 22...Kd6 (22...Ke8 23.Rc1+=) 23.Nf4+= Qa6 Exerts pressure on the isolated pawn 24.Qd5 (24.Qf7 Rc7 25.Qd5 Ke7+=) 24...Ke7= 25.Rb1 (25.f3 Rhd8 26.Qf5 Qa5 27.Qh7 Qd2 28.Kf1 A) worse 28...Qe3 29.Qg7 Ke8 A1) 30.Qf6 Nb3 (30...ef3?? 31.Re1 fg2 32.Ng2 Qe1 33.Ne1+-) 31.Qe6 Kf8 32.Qh6 Kg8 33.Qg6 Kf8 34.Qf5 Kg8 35.Qg5 Kf7 36.Qh5 Kg7 37.Qg4 Kf7 38.Qf5 Kg8 39.Qe6 Kf8 40.Qf6 Ke8 41.Qh8 Kd7 42.Rd1 Nd2 43.Rd2 Qd2 44.Qh7 Kd6 45.Qg6 Kc7 46.Qe4 Kb8-+; A2) 30.Qg6 Ke7 31.Qh6+=; B) 28...Kf7 29.Qh5 Kg8=+) 25...Rhd8 26.Qa2 (26.Qh5 h6= (worse 26...Qa4 27.Qh7 Kf7 28.Rd1=)) 26...g5 (26...Na4 27.h4=+) 27.Nd5 Kf8 28.Nb4 Nd3 (28...Qa4 29.Qa4 Na4 30.f3=) 29.Nd3 Qd3 30.Rd1 Rc2 31.Qe6?? (better 31.Qb1=) 31...Rd2 (better 31...Rd6 32.Qd6 Qd6-+) 32.Qf6+/- Kg8 33.Qg5 Kf7 34.Qf5 (better 34.Qh5 Kg8 35.Rc1+=) 34...Ke7?? (better 34...Kg7!? 35.Qe5 Kg8 36.Qe6 Kg7 37.Qe7 Kg6 38.Qe6 Kg7 39.Qe7 Kg6 40.Qe6 Kg7=) 35.Qe5?? (35.Qh7 Ke6 36.Qg6 Ke7 37.Qg7 Ke6 38.Qg4 Kf6 39.Rc1=) 35...Kd7?? (better 35...Kf7 36.Qh5 Kg8+=) 36.Rd2+- Qd2 37.Kd2 Kc8 38.Ke2 Rd3 1-0. zembelek (2135) - likor64 (2050), Rated Blitz game, lichess.org, 2014.

6.Qb3 a5 7.a3 Bc5 8.Nf3 (8.d4 a4 9.Qc2 ed4 10.ed4 Bb6+=) 8...e4 (8...Bg4 9.d4 a4 10.Qa2 ed4 11.Nd4=) 9.Nd4 Ne7 10.Nc3 (10.cd5 cd5 11.d3+=) 10...Nf5 (10...Bd4!? 11.ed4 Be6=) 11.cd5 (11.Nf5 Bf5 12.cd5 cd5+/-) 11...Bd4 12.ed4 Nd4 13.Qc4 (better 13.Qa4!? c5 14.Ne4+=) 13...Nc2=+ 14.Kd1 Na1 15.dc6 bc6 (15...Nb3 16.Qb3 bc6 17.Ne4=) 16.bc6 (16.Qe4 Qe7 17.Qe7 Ke7=) 16...Qd6 (16...Nb3 17.Qb3 Bg4 18.Be2 Be2 19.Ke2 Nc6 20.Qe6 Ne7 21.Ne4=+) 17.Nb5 (better 17.Ne4 Qc6 18.Ba1=+) 17...Qe5?? (better 17...Qc6 18.Nc7 Ke7 19.Na8 Bg4 (19...Qa8?! 20.Qc5 Kd8 21.Ba1=) 20.f3 A) 20...Qa8? 21.fg4 (21.Ba1?! Rc8 22.Qd4 Bf5=) 21...Nd7 22.Ba1+-; B) 20...Qc4 21.Bc4 ef3 22.Re1 Kd6 23.gf3 Bf3 24.Be2 Be2 25.Re2 Nc6-/+) 18.Be5+- fe5 1-0. ClayPigeons (2135) - Perform (2015), Rated Bullet game, lichess.org, 2021.

6.Qb3 Qd6 7.a3 Bc5 8.Nc3 dc4 (better 8...Ne7!?=) 9.Bc4+/- Ne7?? (better 9...Qf8+/-) 10.Bf7 Kf8 11.Ne4 Qc7 12.Nc5 cb5 13.Ne6 Be6 14.Be6 (worse 14.Qe6 Na6 15.d4 ed4 16.ed4 Rd8+-) 14...Nbc6 15.Bg4 (15.Qb5 Rd8 16.Nf3 Qd6+-) 15...g6 (15...a6 16.Nf3+-) 16.Qb5 Kg7 17.Rc1 Rhd8 18.Nf3 a6 (18...Rd5 19.Qb3+-) 19.Qb3 Qa5 (19...Rd5 20.Be6 Rb5 21.Qc2+-) 20.Bc3 (20.0-0 Qd5 21.Qb6 Ra7+-) 20...Qc7 (20...Qb5 21.Qc2+-) 21.Bb4 (better 21.d4!? ed4 22.Bd4 Nd5+-) 21...Nd5 22.Bc5 (22.Be6 Ndb4 23.Qb4 Rd6+-) 22...Rab8 (22...f5 23.Bh3+-) 23.0-0 (23.Be6!? b6 24.Bf8 Kf8 25.Bd5 Rd6+-) 23...f5 24.Bh3 h6 (24...Rbc8+-) 25.Ne5! Qe5 (25...Ne5 26.Bf8 Double attack; 25...Qe5 26.d4 Passed pawn) 26.Bb6 (better 26.d4 Qf6 27.Bb6 Nb6 28.Qb6+/-) 26...Nb6= 27.Qb6 Rd2 28.Rc6 (better 28.Rc5 Qd6 29.g4=) 28...bc6-/+ 29.Qa7 Kf6 30.f4?? (better 30.g3!?-/+) 30...Qd6 (better 30...Qb5 31.Rc1 Qb1-+) 31.g4? (31.a4 c5-+) 31...Rd8 (31...Rbb2 32.Qh7 fg4 33.Qh8 Ke7 34.Qh6 gh3 35.Qg7 Kd8 36.Qh8 Kc7 37.Qh7 Qd7 38.Qh3 Qh3 39.Rf2 Rd1 40.Rf1 Qf1) 32.g5? (better 32.gf5 Qd3 33.Qc5 gf5 34.Qc6 Rd6 35.Qc5-+) 32...hg5 33.fg5 (33.Bg2 gf4 34.ef4 Qa3-+) 33...Kg5 34.Rf2 (34.Bg2 Rh8 35.Rf2 Rf2 36.Kf2 Rh2 37.Kg1-+) 34...Rf2 35.Kf2 Qh2 36.Ke1 Qh3 (36...Qh3 37.Qe7 Kg4 38.Qd8 Qh4 39.Qh4 Kh4-+; 36...Qd2 37.Kf1 Qd1 38.Kf2 Rd2 39.Kg3 Qe1 40.Kf3 Qf2) 0-1. ClayPigeons (2150) - fortaleza1983 (2210), Rated Bullet game, lichess.org, 2019.

5.c4 cb5

6.cb5 a6 7.a4 Qa5 8.Bc3 Qb6 9.d4+= e4 10.Qh5+/– g6 11.Qd5 f5?? 12.Qb3 Be6?? 13.d5+- Bf7 14.Bh8 Qc5 15.Nd2 Bd5 16.Bc4 Bc4 17.Qc4 Qb4 18.Qc8 Kf7 19.Qb7 (19.Qb7 Ne7 20.Qa8+-) 1–0. valpa – footyhead, playchess.de, 2002.

6.cb5 Bb4 7.Qh5 g6 8.Qh4 Bd7?? (better is 8...Qe7=) 9.Qb4+- a5 (9...Bf5 10.d4 Nd7 11.de5 Ne5 12.Bd4+-) 10.Qd6 Ne7 (10...Qe7 11.Qd5 Be6 12.Qf3+-) 11.Qf6 Rf8 12.Qe5 Rf5 (12...Bg4 13.Qd4 h5 14.Nc3+-) 13.Qh8 Rf8 14.Qh7 Bf5 15.Bg7 Rg8 16.Bf6 (better is 16.Nc3 Nd7+-) 16...g5 (16...Rf8 17.Bd4+-) 17.Qg8! Ng8 18.Bd8 Kd8 19.Nf3 1–0. pcmvr (1700) – philippajames (1930), net–chess.com, 2006.

6.cb5 b6 7.Qh5 g6 8.Qd1 Bc5 9.Ne2 (9.d4 Bb4 10.Bc3 Qd6+=) 9...Bb7 10.d4 Bb4 11.Bc3 (11.Nd2 Nd7+=) 11...Bc3 (11...Bd6 12.Nd2=) 12.Nbc3+= e4 (12...Ne7!?+=) 13.Nf4 g5? (better 13...Ne7+-) 14.Qh5+- Kd7 15.Nfd5 a6 (15...Bd5 16.Nd5 Qf8+-) 16.Qf7 Ne7 17.Nf6 Kd6 (17...Kc7 18.Rc1 Nd7 19.Ncd5 Kb8 20.Ne7 ab5 21.Rc8 Bc8 22.Nc6 Kc7 23.Nd8 Rd8 24.Nd5 Kd6 25.Qe7 Kd5 26.Qd8+-) 18.Nce4 Be4 19.Ne4 Kd7 (19...Kc7 20.d5! Kb7 21.d6+-) 20.ba6 (better 20.d5 Qc8 21.Qe6 Kd8 22.Qb6 Qc7 23.Qc7 Kc7 24.d6 Kd7 25.de7 g4+-) 20...Na6 21.Bb5 Kc7 22.Rc1 Kb8 23.0-0 (23.Ng5 Nc7 24.Ne6 Ne6 25.Qe6 Rg8+-) 23...Nc7 24.a4 h6 25.Nf6 Rf8 (25...Nb5 26.ab5 Qd6 27.Qg7+-) 26.Nd7 Kb7 27.Qc4 (27.Nf8 Qf8 28.Qh7 Qf6+-) 27...Nb5 28.Qb5 (28.Nf8 Nd6 29.Qc3 Ne8+-) 28...Rf5 (28...Ra5 29.Nc5 Ka8+-) 29.Ne5 (better 29.Nc5 Rc5 30.dc5 Ra5+-) 29...Ra5 (29...Rf6+-) 30.Qd3 (better 30.Qb3+-) 30...Rae5 (30...Rfe5 31.Rc4 Rac5+-) 31.a5 (better 31.Rc4!?+-) 31...Ra5+= 32.Rc2 Rfb5 33.Rfc1 Nd5 (better 33...Rd5+=) 34.e4?? (better 34.Qh7 Ka6 35.h3+-) 34...Nb4–/+ 35.Rc7 Ka6?? (35...Qc7 36.Rc7 Kc7 37.Qc4 Kd6 38.e5 Ke7=+) 36.Qf3?? (better 36.Qc4 Qe8 37.f3+-) 36...Qd4 (better 36...Qc7! 37.Rd1 Qf4 38.Qf4 gf4–+) 37.e5? (better 37.Qf8 Re5 A) 38.Qh6? Nd3 (38...Re4?! 39.Qf8–/+) 39.Qh8 Nc1 40.Rc1 Qe4 41.Qc8 Qb7–+; B) 38.Qc8 Kb5 39.R7c4=) 37...Qe5?? (better 37...Re5 38.Qf8 Kb5–+) 38.Qb7 1–0. aravind555 (1710) – Majid1999Iran (1730), lichess.org, 2020.

6.cb5 Qb6 7.Nc3 a6? 8.Nd5+- Qc5?? (better 8...Qd6 9.Rc1 Kd8+-) 9.e4 (9.Rc1 Qd5 10.Rc8 Kd7 11.Qg4 Qe6 12.Qe6 Ke6 13.Bc4 Ke7 14.Ba3 Kd7 15.Rf8 ab5 16.Bg8 Ra3 17.Rb8 Kd6+-) 9...ab5 (9...Nd7 10.Rc1 Qa7 11.Nc7 Kd8 12.Na8 Qa8+-) 10.Rc1 Qb4 (10...Ra2 11.Bb5!! Bd7 12.Rc5 Bc5 13.Qb3+-) 11.Bb5!! Nc6 (11...Qb5 Decoy to b5 12.Nc7 Theme: Double Attack) 12.Bc3 (better 12.Nb4 Bb4 13.Rc6+-) 12...Qe4=+ 13.Ne3 f5?? (better 13...Ra2 14.Nf3 Nh6=+) 14.Nf3+- f4 (14...Ra3 15.Rc2+-) 15.d3 Qg6 16.Ne5 Qe6 (16...Qd6 17.Qh5 g6 18.Qf3 fe3 19.Nc6 ef2 20.Kf1+- (20.Kf2?! Ra2 21.Kg1 bc6 22.Bc6 Bd7 23.Bh8 Ne7 24.Bd7 Qd7+-)) 17.N3g4 (better 17.Bc4 fe3 18.Be6 ef2 19.Kf2 Be6 20.Re1+-) 17...Nf6 18.0-0 Ng4 19.Re1 Nge5 20.Re5 Qe5 (20...Ra2 21.Qg4 (worse 21.Re6 Be6 22.Qh5 Kd7+-) 21...Kf7 22.Re6 Be6 23.Qf4 Kg8 24.Bc4+-) 21.Bc6 bc6 22.Be5 Ra2 (22...Be6 23.Rc6 Bd5 24.Qh5 Bf7 25.Qf5+-) 23.Bf4 (better 23.Qh5 g6 24.Qf3+-) 23...Bc5 (23...Be7 24.Qh5 g6+-) 24.Rc5 (better 24.Qh5 Ke7 25.Qc5 Kf7 26.Qc6+-) 24...0-0 (24...h5+-) 25.Qb3 Kh8 26.Qa2 Re8 The mate threat is Re1 27.Be3 (27.Re5 Bd7 28.Re8 Be8 29.Be5 c5 30.Qe6 Bf7 31.Qf7 c4 32.Qg7) 27...Be6 28.Qa7 (better 28.Qb2 Kg8+-) 28...Rd8 29.d4 (better 29.Rc6 Rd3 30.Qa1+-) 29...Rd7 30.Qb8 Bg8 31.Rc6 (31.Ra5 Rd5 32.Ra8 Rd8 33.Qd8 c5 34.Qg8) 31...Rd5 32.Rc8 Ra5 (32...Rd8 33.Rd8 h6 34.Rg8 Kh7 35.Qe8 g5 36.Qf7) 33.Rg8 1–0. aravind555 (1725) – BGChessking (1710), lichess.org, 2020.

6.cb5 Bc5 7.Nf3 a6 8.ba6 A) 8...ba6 9.d4 Bb4 (9...ed4 10.Bd4 Bb4 11.Bc3 Qa5 12.Bb4 Qb4+=; 9...Qa5 10.Nbd2 ed4 11.Bd4 Ne7 12.Bd3 Nbc6+=) 10.Nbd2 Bd2 11.Nd2 Nc6 12.Rc1 Nge7+=; B) 8...Na6 9.d4 Bb4 (9...ed4 10.Nd4 Ne7 11.Qh5 g6 12.Bb5 Bd7+=) 10.Nfd2+= e4 11.Bb5 Kf7 12.Qb3 Be6=.

6.cb5 Bc5 7.Nf3 a6 8.d4 Bb4 9.Nfd2 (9.Bc3 Bc3 10.Nc3 e4 11.Nd2 Ne7 12.ba6 Na6+=) 9...Nd7 10.Qb3 Bd2 11.Nd2 Ne7 12.e4 ed4+=.

6.cb5 Bc5 7.Nf3 a6 8.Ne5 fe5–/+ 9.Qh5 Kf8 10.Qe5 (10.Be5 Nd7 11.ba6 ba6 12.Bf4 Ngf6–/+) 10...Nf6 11.ba6 (11.Nc3 Kf7 12.Qg5 Be6–/+) 11...ba6 (11...Na6 12.Be2 Bd6–/+) 12.Be2 (12.Ba3 Ba3–/+) 12...Nc6 13.Qc3 Qd6 14.0-0 d4 15.Qc1 Rb8 16.d3? (better is 16.Ba3 Nb4 17.ed4 Bd4 18.Nc3–+) 16...de3 17.fe3 Be3! 18.Qe3 Rb2 19.Nc3 Qd4 20.Qd4 Nd4 21.Bd1 Bb7 (21...Rd2 22.Ne4 Rd3 23.Nf6 gf6 24.Rf6 Ke7 25.Rf2–+) 22.Ne4 Ke7 23.Rf2 Rf2 24.Nf2 Rd8 25.Rb1 Bc6 26.a4 (26.Rb6 a5–+) 26...Nd5 27.Ne4 Ne3 28.Nc5 Rf8 29.Bb3 (29.Bf3 Bf3 30.gf3 Nf3 31.Kh1 Rf6 32.Rb7 Kd8–+) 29...Nb3 (29...Ne2 30.Kh1 Bg2) 30.Nb3–+ Kd6 (30...Bg2?! 31.Re1 Rf3 32.Nd2–/+) 31.Nd4 Ba4 32.Re1 Nc2 33.Re6 (33.Re4–+) 33...Kd5 34.Ra6 Nd4 (34...Nd4 35.h3 Bb5–+) 0–1. Hage – De Visser,Arno, Noordkop, 1999.

6.cb5 Bd7 7.Nc3 Ne7 8.a4 a6 9.Qb3 ab5 10.ab5 Ra1 11.Ba1 Be6 12.Nf3 Kf7 13.Be2 h5 14.0-0 h4 15.d4 e4 16.Nd2 h3 17.g3 Qd7 18.Na4 Bg4? 19.Bg4 Qg4+/– 20.Nc5 b6 21.Nb7?? Qe2 22.Nd6 Ke6? 23.N2e4?? Qf3 24.Ng5 fg5 (24...fg5 25.Qd5 Nd5 26.e4 Qg2) 0–1. elsh1403 – abond, internet, 2011.

6.cb5 Nd7 7.a4 b6 8.Nf3 Bb7 9.Be2 Bd6 10.0-0 Ne7 11.d3 0-0 12.Nbd2 (12.Ba3 Nf5=) 12...Ng6 (12...a6 13.Ba3 Ba3 14.ba6 Ba6 15.Ra3=) 13.Rc1 f5 14.Qb3 Rc8 (14...Qf6 15.Ba3=) 15.Rc8 Qc8 16.Rc1 Qd8 17.Ne1 Qe7 Black prepares the advance e4 18.Nc2 Rc8 19.Nf3 f4 20.d4 fe3 21.Ne3 (worse 21.Qe3 e4 22.Ne5 Nde5 (worse 22...Be5 23.de5 Nde5 24.Nd4=+) 23.de5 Be5 24.Be5 Qe5–/+; worse 21.fe3 e4 22.Nd2 Qh4=+) 21...e4?? (better 21...Rc1 22.Bc1 Nf4=) 22.Rc8+- Bc8 23.Nd5 (worse 23.Qd5 Kf8 24.Nf5 Qf6 25.Qd6 Qd6 26.Nd6 Nf4+-) 23...Qe6 (23...Qf8 24.Nb6 Kh8 25.Nd7 Bd7+-) 24.Ng5 (better 24.Ne7 Kh8 25.Qe6 Be7 26.Bc4+-) 24...Qf5 (24...Ndf8 25.Bg4!! Nf4 26.Ne6 Be6 27.Be6 N4e6+-) 25.Ne7 (25.Nf6! Kh8 26.Qg8) 25...Kf8+- 26.Nf5 Ne7 (26...Nh8 27.Qe6 Nf6 28.Qd6 Kg8 29.Qd8 Ne8 30.Qe8) 27.Nh7 (27.Qf7) 27...Ke8+- 28.Nd6 Kd8 29.Nc8 Kc8 30.Qe6 Kb7 31.Qd7 (31.Qd7 Kb8 32.Bg4 Ka8 33.Qe7 a6 34.Bc8 ab5 35.Qb7) 1–0. BeepBeepImAJeep (2620) – Svjatoslav (1860), lichess.org, 2016.

6.cb5 Nd7 7.a4 Nc5 8.Nf3 (8.d4 Ne4 9.Bd3 Bb4 10.Kf1 ed4 11.Bd4 Bf5=) 8...e4 9.Nd4 Ne7 10.Be2 Ng6 (10...Nf5 11.d3=) 11.0-0 Ne5 12.f4 Ned3 13.Ba3 Bd6? (13...Kf7 14.a5+=) 14.Nc3 (better 14.Bd3!? ed3 15.Qh5 g6 16.Qd5+-) 14...Bc7 15.Bd3 Nd3 16.Qb3 Bb6 17.Qd5 (17.Nd5 Qd7 18.f5 Bd4 19.ed4+-) 17...Qd5= 18.Nd5 Bd4 19.ed4 The passed pawn on d4 will become decisive later 19...Kf7 20.Ne3 f5 21.a5 Bd7 22.Rab1 a6? (better 22...Rhd8=) 23.ba6+- ba6 (better 23...Ra6 24.Rb7 Rd8 25.Nf5 Ra5+-) 24.Bc5 (24.Rb7!? Ke8+-) 24...Bb5 (24...Rab8 25.Rb6+-) 25.Bb6 (better 25.Nf5!? Nc5 26.dc5 Bf1 27.Kf1+-) 25...g6+= 26.Rb3 (26.h3 Rab8+=) 26...Rac8= 27.Rc3 (27.Rbb1 Ke6=) 27...Ke6 (27...Rc3 28.dc3 Rc8 29.d5 Rc3 30.h3=+) 28.Rb1 (better 28.d5!? Kd6 29.Bd4+=) 28...Nf4–/+ 29.Kf2 (29.Kh1 Nd3 30.d5 Kd6–/+) 29...Nd3 30.Kg1 f4 (30...Rc3 31.dc3 Rc8 32.d5 Kd6 33.Bd4–+) 31.Ng4 (31.Nd1 Rhe8–/+) 31...Rc3–+ 32.dc3 Rc8 33.g3 (33.d5 Kd6 34.Nf6 e3–+) 33...fg3 (33...g5!? 34.d5 Kf5 35.Nh6 Kg6 36.Ng4–+) 34.hg3 Rc3 35.Ne3 Nc1 (35...Bc6 36.Bc7–+) 36.Kf2 (36.Kf2 Kd6 37.d5–/+; 36.d5 Kd6–/+) 1–0. BeepBeepImAJeep (2310) – chessstrategy (2320), lichess.org, 2015.

6.cd5 Qd5 7.Nc3 Qd8 8.Bb5 Nc6 9.Nf3 Bd7 10.0-0 Bb4 11.d4 a6 12.Ba4 Qa5 13.Bc6 Bc6= 14.Ne4?? Be4–+ 15.a3 Bd6 16.de5 Be5 17.Ne5 fe5 18.Qh5 Bg6 19.Qe5 Qe5 20.Be5 Nf6 21.Rfd1 0-0 22.Rd4 Rfd8 23.Rb4 b5 24.Rc1 Rac8 (24...Rac8 25.Rc8 Rc8–+) 0–1. gtate (1945) – jrichner (2150), net–chess.com, 2005.

6.cd5 Qd5 7.Nc3 Qd8 8.Bb5 Bd7 9.Bc4 Bc5 (9...Nc6 10.Nf3=) 10.Qb3 (better 10.d4 ed4 11.ed4+/-) 10...Nc6?? (10...Nh6 11.Ne4 Be7 12.Nf3=) 11.Bf7 (11.Bg8 Qe7 12.Bh7+- (12.Qb7?! Rb8 13.Qa6 Rg8=+)) 11...Kf8= 12.Qd5 (12.Nf3=) 12...Bb6 (12...Nge7 13.Qc5 Kf7 14.Ne4=+) 13.Nb5 (better 13.Bg8!? Rg8 14.Ba3 Ne7 15.Qb7+=) 13...Nge7 14.Ba3 g6 15.Nd6?? (15.Be6 Bc8=) 15...Kg7 (better 15...Nd5 16.Bd5 Kg7-+) 16.Bg6?? (better 16.Qf3=) 16...Nd5-+ (16...Kg6 17.Qf7 Kh6 18.Qf6 Ng6 19.Nf7 Kh5 20.Qg7 Be3 21.fe3+-; 16...Ng6?! 17.Qf7 Kh6 18.Nb7-/+; 16...hg6?! 17.Qf7 Kh6 18.Qf6=) 17.Be4 Be6 18.Nf3 (18.Nb7 Qd7 19.Nc5 Bc5 20.Bc5 Ndb4-+) 18...h6 (18...Qd7 19.g4-+) 19.g4 (19.Nh4 Ndb4 20.Nhf5 Bf5 21.Nf5 Kg8-+) 19...Na5 (19...Ndb4!? 20.Bb4 Nb4 21.Nf5 Kf7 22.0-0-+) 20.Nh4 Ne7 21.Nhf5 (21.Rg1 Qd7 22.d3 Bc7 23.Ndf5 Bf5 24.Nf5 Nf5 25.gf5 Kh7-+) 21...Bf5 22.gf5 Rc8! 23.Rg1 (23.Nc8 Nc8 Combination) 23...Kh7 24.Bd5 (24.Nc8 Nc8 25.d3-+) 24...Nd5 25.Nf7 Rg8 26.Rg6 Rg6 (better 26...Qd7 27.Nd6 Rc6-+) 27.fg6 Kg6 28.Nd8 Rd8 29.Ke2 (29.Rc1 Nc6 30.Ke2 Ndb4 31.Bb4 Nb4-+) 29...Rc8 (29...Nc4 30.Bc1-+) 30.Rg1 (30.f3 Nc4 31.Bc1 f5-+) 30...Kf7 31.Rg3 (31.Rc1 Rc4-+) 31...Bc5 (better 31...Rc2 32.Kd1 Ra2 33.Bc1-+) 32.Bb2 (32.Bc5 Rc5 33.Rh3 Rc2-+) 32...Bb4 33.d4 (33.a3 Bc5 34.Rg4-+) 33...Rc2 34.Kf3 Rb2 35.de5 Ne3! 36.Rh3 (36.fe3 Rh2 Combination; 36.Ke3 Nc4 Double attack) 36...Nf5 (better 36...Nd1 37.ef6 Rf2 38.Kg4-+) 37.Rh5 Rf2! 38.Ke4 (38.Kf2 Bc5 Double attack) 38...Ng7 (better 38...Kg6!? 39.Rf5 Rf5 40.ef6-+) 39.Rh6 f5 40.Kd5 Re2 (40...Rd2) 41.e6 (41.e6 Ke7 42.Kd4 Ne6 43.Re6 Ke6 44.a3-+). ClayPigeons (2185) - GEORGY534 (2190), Rated Bullet game, lichess.org, 2021.

6.cd5 Qd5 7.Nc3 Qd8 8.Bb5 Bd7 9.Nf3 Bb5 10.Nb5 Nc6 11.0-0 a6 12.Nc3 Bb4 13.d4+= e4 (better 13...Nge7!?+=) 14.Ne4+- Nge7 15.Rc1 (15.a3!? Qd5 16.Nf6 gf6 17.ab4+-) 15...Qd5+/- 16.Nc3 Bc3 17.Bc3 0-0 18.Qb3 Rac8 (18...f5 19.Rc2+/-) 19.e4 Qb3 20.ab3 Rfd8 (20...f5 21.e5+-) 21.Rfd1 b6 22.d5 Nb8 23.Nd4 a5 24.Ne6 Rd7 25.Bd4 Rc1 26.Rc1 Kf7 (26...Rd6+-) 27.Rc8 (better 27.Bb6 Nd5 28.ed5 Rd5 29.Nc5+-) 27...Nc8-+ 28.f4 (28.f3 Na6-+) 28...b5 (better 28...Nd6 29.Bb6 Ne4 30.Nc7-+) 29.Kf2 (29.Nc5 Rd8-+) 29...a4 (29...Na6 30.g4-+) 30.ba4 (30.Nc5 Re7 31.e5 a3-+) 30...ba4 31.Ke3 a3 32.g4 a2 33.g5 (33.Ba1 Rd6-+) 33...fg5 (33...f5!? 34.g6 hg6 35.Nc5-+) 34.Ng5 Kg8 35.Kd3 (35.Ne6 Rb7 36.Kd3 g6-+) 35...Nc6! 36.Bc3 (36.dc6 Rd4 Promotion) 36...Nb4! 37.Kd2 (37.Bb4 a1Q Combination) 37...Nb6 (better 37...h6 38.Ne6 Nd6 39.Ke3-+) 38.Ne6 (38.Ba1 Rc7 39.d6 Rc2 40.Ke3 Nc4 41.Kf3-+) 38...N6d5! 39.ed5 Nd5 40.Ba1 Nf4 41.Ke3 (41.Nd4 Ne6 42.Kc2 Nd4 43.Kb2 Ra7-+) 41…Ne6 (41...Ne6 42.Bc3 Rc7-+) 0-1. jhonores (2135) - Yusupov_Sarvar2303 (2140), Hourly SuperBlitz Arena, lichess.org, 2020.

6.cd5 Ne7 7.Bb5+= Bd7 8.Bd7 Qd7 (8...Nd7 9.Nc3+=) 9.e4+/- Kf7 (9...Ng6 10.Nh3+/-) 10.Ne2 (10.d4 ed4 11.Bd4 Ng6+-) 10...Na6 11.d4 ed4 (11...Ng6 12.de5 fe5 13.Nbc3+/-) 12.Bd4 Ng6 13.0-0 Bd6 14.g3 (14.f4 Kg8+-) 14...Rhe8 15.Nd2 Nc5 16.f3 f5 17.Rc1 Rac8 18.Nc3 (18.ef5 Ne5+/-) 18...Kg8 (18...f4 19.Ne2 b6 20.Nc4+=) 19.Qe2 (19.ef5!? Qf5 20.Nde4 Ne4 21.fe4+/-) 19...f4+= 20.g4 Ne5 21.Nb5 Ned3 22.Nd6 (22.Rb1!? Be5 23.Bc5 Nc5 24.Nc4+/-) 22...Nc1= (worse 22...Qd6 23.Rc3 Nb4 24.Qb5+-) 23.Rc1 Qd6 24.Nc4 (24.Qc4 Qd7 25.Bc5 b6=) 24...Qf8 (better 24...Qa6=+) 25.Ne5? (25.e5 b5 26.Nd2 Ne6 27.Rc8 Nd4-/+) 25...Qd6 (better 25...Nb3! 26.Rc8 Nd4-+) 26.Nc4=+ Qa6 27.Kf1 (27.Rc3 Re7 28.Rc2 Qa4=+) 27...b5 (better 27...Ne4 28.fe4 f3-+) 28.Ne5= Na4 (28...Qa4!? 29.Bc5 Re5=) 29.Nc6+= Nb6? (better 29...Rc7+=) 30.Kf2?? (better 30.Bb6 ab6 31.d6+-) 30...Nc4 (30...Nd5 31.Qc2 Nb6 32.Qb3 Nc4 33.Na7-/+) 31.h4 (better 31.a4!? Qa4 32.Ra1+=) 31...Rc6-/+ 32.dc6 Qc6 33.a4 Qh6 (33...a6 34.Qd3-/+) 34.h5 (better 34.ab5 Qh4 35.Kg1+/-) 34...a6=+ 35.ab5 ab5 36.Rb1 (36.Rc4!? bc4 37.Qc4 Qe6 38.Qc7 Qa2 39.Kf1=) 36...Qg5 37.Kg2 Ne3?? (better 37...Rd8 38.Rd1 Kf7=+) 38.Be3+/- fe3 39.Kg3 (better 39.Qb5!? Qb5 40.Rb5+-) 39…Rd8 (39...Rd8 40.Rb5 Qe7+-). zembelek (2030) - AnatoliyPechenkin (2065), Rated Blitz game, lichess.org, 2014.

5.c4 Bc5

6.a4 Ne7 7.Nf3 (7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 0-0=) 7...0-0 (7...Be6 8.d4 ed4 9.Bd4 Bb4 10.Bc3 Bc3 11.Nc3 dc4 12.Qd8 Kd8 13.Nd2=) 8.Be2 (8.d4 ed4 9.Bd4 Bd4 10.Qd4 Be6=) 8...Bg4 9.0-0 Nd7 (9...Bf3 10.Bf3 e4 11.Be2=) 10.d4 ed4 (10...Bd6 11.Ba3 Ba3 12.Na3=) 11.Nd4 (11.Bd4 Bf3 12.Bf3 Bd4 13.Qd4 Ne5=) 11...Be2 12.Ne2 (better 12.Qe2 Bd4 13.Bd4=) 12...Ng6 (12...dc4 13.bc6 Nc6 14.Qd5 Kh8 15.Qc4=) 13.Nd2 (better 13.cd5!? cb5 14.ab5+-) 13...Nde5 14.cd5 cd5 (14...Qd5 15.Nb3 Qd1 16.Rfd1=) 15.Nd4 Qe7 16.N2b3 Bd6? (better 16...Bb4+=) 17.Nf5+- Qd7 18.Qd5 (better 18.Nd6 Qd6 19.Ba3+-) 18...Kh8?? (better 18...Qf7 19.Rfd1 Bb4+-) 19.Nd6 (19.Qd6?! Qf5 20.Qd5 Qc2+-) 19...Ne7 20.Qd4 Rad8 (20...Nc8 21.Nc8 Rfc8 22.Qd7 Nd7 23.Rfd1+-) 21.Rfd1 Qe6 (21...b6 22.f4 Qe6 23.fe5 Qb3 24.ef6 gf6 25.e4+-) 22.Nc5 Qg4 (22...Qg8 23.Ncb7 Ra8 24.Qe4+-) 23.Nf7! Kg8 (23...Nf7 Theme: Deflection from g4 24.Qg4) 24.Qg4 Rd1 25.Qd1 Ng4 26.Qg4 Kf7 27.Qe6 Kg6 28.Qe7 (28.Nd7 Kh6 29.Qh3 Kg5 30.g4 Rd8 31.Qh5) 28...Rf7 29.Qe8 f5 30.Ne6 h6 (30...f4 31.Nf4 Kh6 32.Qe6 Kg5 33.Qe5 Rf5 34.Qg7 Kh4 35.Qg3) 31.Nf4 Kg5 32.Qf7 g6 33.Qg6 Kh4 34.g3 (34.Bf6) 1–0. BeepBeepImAJeep (2695) – ntheory (2025), lichess.org, 2017.

6.cd5 cd5 7.d4 Bb4 8.Nc3 Ne7 9.de5 fe5 10.Nf3 Ng6 11.Qb3 Ba5 12.Rd1 Increases the pressure on d5 12...Be6 13.Bc4! Ne7 (13...dc4 14.Rd8 Pinning (14.Rd8 Deflection)) 14.e4 (14.Ne5 Qc7–+) 14...Qb6 15.ed5 Bf7? (better is 15...Bg4 16.Be2 Nd7+-) 16.d6 Bc4 17.Qc4 Ng6 18.Qc8 Qd8 19.Qe6 Kf8 20.d7 Nf4 (20...Na6 21.ba6 b5+-) 21.Ba3 Qe7 (21...Bb4 22.Bb4 Qe7 23.Be7) 22.Be7 1–0. pcmvr (2845) – stefandima (2060). net–chess.com, 2011.

5.c4 d4

6.a4 c5 7.ed4 b6?? 8.d3?? (8.Qh5 g6 9.Qf3 e4 10.Qe4 Qe7+-) 8...cd4? (8...ed4 9.Be2 Nd7 10.Nf3=) 9.Nf3?? (better 9.Qh5 g6 10.Qf3 Bb4 11.Nd2+-) 9...Bb4 10.Nfd2 Bd2 (10...a6 11.Be2=) 11.Nd2 Ne7? (11...a6 12.Be2=) 12.Be2 (better 12.Qh5 Kf8 13.Qf3+-) 12...0-0?? (better 12...Bb7+=) 13.Bf3+- Bf5 (13...Nbc6 14.Ba3+- (14.Bc6?! Nc6 15.bc6 Qc7+-)) 14.Ba8 Bd3 15.Be4 Be4 16.Ne4 f5 17.Ng3 Ng6 18.0-0 Qf6 (18...f4 19.Ne4+-) 19.Qd3 (better 19.f4!? Nf4 20.Bd4 Qe6+-) 19...Nd7 20.Ba3 Nc5 (20...e4 21.Qd1 Rd8 22.f3+-) 21.Bc5 bc5 22.f3 Nf4 23.Qd2 g5 (23...Rd8 24.a5+-) 24.Ne2 Ne6 25.a5 Qg6 26.b6 ab6 27.ab6 Rb8 28.Rfb1 Nd8 (28...e4 29.b7 Qf6 30.Ra8+-) 29.Ra7 Rb6 (29...e4 30.b7 e3+-) 30.Rb6 Qb6 31.Ra8 (31.Qg5 Kf8 32.Qg7 Ke8 33.Qe7) 31...Qb1 (31...f4+-) 32.Qc1 (32.Kf2 g4 33.Rd8 Kf7 34.Qg5 Qb6 35.Rd7 Kf8 36.Qg7 Ke8 37.Qe7) 32...Qb6 (32...Qc1 33.Nc1 e4+-) 33.Qg5 Kh8 34.Rd8 Qd8 35.Qd8 Kg7 36.Qe7 Kg6 37.Qe5 (37.Ng3 h5 38.Qe6 Kh7 39.Qf7 Kh6 40.h4 e4 41.Nf5) 37...d3 (37...f4 38.Nf4 Kf7 39.Qc7 Ke8 40.Nd5 Kf8 41.Qe7 Kg8 42.Nf6 Kh8 43.Qh7) 38.Nf4 Kg5 (38...Kf7 39.Qe6 Kf8 40.Qd7 Kg8 41.Ne6 d2 42.Qe8) 39.Nd3 (39.g3 d2 40.Qg7) 39...h5 (39...Kg6 40.Nf4 Kf7 41.Qf5 Ke8 42.Qe6 Kf8 43.Qd7 Kg8 44.Ne6 h6 45.Qg7) 40.Qf4 (40.Qg7 Kh4 41.Qe7) 40...Kf6 (40...Kg6 41.Qd6 Kf7 42.Ne5 Ke8 43.Qe6 Kd8 44.Qd7) 41.h4 (41.Qd6 Kg7 42.Ne5 Kh8 43.Qg6 h4 44.Nf7) 41...Ke6 42.Qe5 Kf7 (42...Kd7 43.Nc5 Kc6 44.Qd5 Kc7 45.Qd7 Kb6 46.Na4 Ka6 47.Qc7 f4 48.Nc5) 43.Qf5 (43.Qd6 Kg7 44.Ne5 Kh8 45.Qg6 f4 46.Nf7) 43...Ke7 44.Qh5 (44.Ne5 Kd6 45.Qf6 Kc7 46.Qc6 Kb8 47.Nd7 Ka7 48.Qb6 Ka8 49.Qb8) 44...Kd7 45.Qc5 Ke6 46.Qd5 Kf6 47.Qe5 (47.Qd7 Kg6 48.g4 Kf6 49.g5 Kg6 50.Nf4) 47...Kg6 (47...Kf7 48.Qc7 Ke6 49.g4 Kf6 50.g5 Kg6 51.c5 Kf5 52.Qf7) 48.c5 (48.Qe6 Kh7 49.Qg4 Kh8 50.Ne5 Kh7 51.Qg6 Kh8 52.Nf7) 48...Kh6 (48...Kf7 49.Qf5 Kg8 50.Ne5 Kh8 51.Qf6 Kg8 52.Qf7 Kh8 53.Ng6) 49.c6 (49.Qf6 Kh7 50.h5 Kg8 51.h6 Kh7 52.Qg7) 49...Kg6 (49...Kh7 50.Qe7 Kg6 51.Ne5 Kh6 52.c7 Kh5 53.Qg5) 50.c7 Kf7 51.c8Q Kg6 52.Qg8 Kh6 53.Qeg5 (53.Qgg7) 1-0. BeepBeepImAJeep (2550) - djorfchess20 (1780), lichess.org, 2017.

6.ed4 ed4 7.Bd3 Bd6 (better is 7...Nh6=) 8.Bd4?? (8.Qh5 Kf8+=) 8...Be5?? (8...Be7 9.Qh5 Kf8=) 9.Qh5+/– g6? (better is 9...Kf8 10.Be5 Qd3 11.Bb8 Rb8 12.Qc5 Kf7 13.Qa7 Qe4 14.Ne2 Qg2+/–) 10.Bg6!+- hg6 11.Qh8 Qd4 12.Qg8 Kd7 13.Nc3 Kc7 (13...Qg4 14.Nf3 Qg2 15.Ke2 Bc3 16.dc3+-) 14.Nf3 Qd5 1–0. GuestTLPB – GuestXTVQ, freechess.org, 2017.

6.ed4 ed4 7.Nf3 c5 8.Bd3 b6?? (8...Qe7!? 9.Qe2 Qe2 10.Be2 Bf5=) 9.0-0 (9.Qe2 Kf7 10.Be4 d3+-) 9...Bd6?? (better 9...Bb7+-) 10.Re1 Ne7 11.Be4 0-0 (11...Be6 12.Ba8 Bc4 13.Qa4+-) 12.Ba8 Bg4 13.h3 Bh5 14.d3 (better 14.Qe2!? f5 15.Na3 Qc7+-) 14...Nd7 15.Bc6 (15.Qe2 Qc7 16.Be4 f5+-) 15...Ne5 (15...Nc6 16.bc6 Ne5 17.g4+-) 16.Nbd2 (better 16.Be4+-) 16...N7c6 17.bc6 Qc7 (17...Nd3 18.Rf1 Qc7+-) 18.Qc2 Qc6 (18...Bf3 19.Nf3 (19.gf3?! Qc6 20.Re4 Qd7+-) 19...Nf3 20.gf3 Qc6 21.Qe2+-) 19.Ne5 fe5 20.Ne4 Bc7 21.Bc1 Qg6 (21...Bg6 22.a4+-) 22.Ng3 (better 22.g4 Rf3 23.Qe2 Rh3+-) 22...Bf3 (22...Qe8+-) 23.gf3 Rf3 24.Qe2 (24.Re4 Qe6+-) 24...Rf6 (24...Qd3 25.Kg2 Qe2 26.Ne2+-) 25.Qg4 Qf7 (25...Qg4 26.hg4 Rf7+-) 26.Qc8 Qf8 27.Qf8 (better 27.Qc7 Rf2 28.Qe5 h6 29.Qe6 Kh8+-) 27...Rf8 28.Bd2 (better 28.Rb1 h6+-) 28...g6 (28...Rf3 29.Kf1 Rd3 30.Ke2+-) 29.Ne4 (29.Ne4 Rf3 30.Reb1 Rh3 31.Rb3+-; 29.Bh6!? Rf3 30.Rad1 a6+-) 1–0. BeepBeepImAJeep (2535) – cane44 (1800), lichess.org, 2017.

6.Qh5 g6 7.Qf3 (7.Qe2 de3 8.de3 Be6=) 7...c5 (7...de3 8.de3 Nh6 9.Nc3=) 8.Ne2 (8.Bd3 a6=) 8...Qb6 (8...a6 9.ed4 cd4 10.Qe4+=) 9.d3 (9.Ng3 a6=) 9...Nc6 (9...a6 10.a4–/+) 10.a4 (10.Nc1 Bd6+=) 10...Nb4 11.a5 (11.Kd2!?+=) 11...Qd8–/+ (worse is 11...Nd3 12.Kd2 de3 13.Kd3 Bf5 14.Kc3+/–) 12.Kd2 de3 (12...Bg4 13.Qg3 de3 14.Qe3–+) 13.Qe3 Bh6 14.f4 Be6 (14...Bf5 15.Ra3 Qd6 16.g4 Bg4 17.Bg2–+) 15.Kc3 (better is 15.Ra3!?–/+) 15...Ne7–+ 16.Qc5? (16.Qd2–+) 16...Rc8 17.Qc8 Ned5! (17...Ned5 18.Kb3 Qc8–+ (worse is 18...Bc8 19.Ng3–+); 17...Qc8?! 18.Kb4 Nd5 19.Kb3 Nf4 20.Nf4 Bf4 21.Nc3–+; 17...Bc8?! 18.Kb4 Qd3 19.Nd4–+) 0–1. Whitehead – Olle, corr CCLA, 1970.

5.c4 Ne7

6.a4 Ng6 7.Nf3 Bb4 8.cd5 cd5 9.Be2 0-0 10.0-0 Nd7 (10...Be6 11.d4 Nd7 12.Qb3=) 11.d4 (11.Qb3 Qa5 12.Bc3 Bc3 13.Qd5 Kh8 14.Nc3 Nb6+-) 11...Nb6 (11...e4!? 12.Nfd2 Bd2 13.Nd2 f5+=) 12.de5+- fe5 13.Ne5 (worse 13.Be5 Rf3 14.Bf3 Ne5–/+) 13...Ne5 14.Be5 Qg5 (14...Qe7 15.Bd4 Nc4 16.Bf3+-) 15.Bg3 (15.f4 Qe7+-) 15...Be7 (15...Qf6 16.Nd2 Be6 17.Nf3+-) 16.Nd2 Nc4? (16...Be6 17.Nf3 Qg6 18.Nd4+-) 17.Nf3 (17.Nc4 dc4 18.Bc4 Kh8+-) 17...Qf6? (better 17...Qf5+-) 18.Qd5 Kh8 (18...Be6 19.Qb7 Nd6+-) 19.Bc4 Bf5 (19...Bb4 20.Ne5 Bc3 21.Rad1 Be5 22.Be5+-) 20.Ne5 Rad8 (20...h6 21.Qb7 Bc5 22.Rad1+-) 21.Nf7 Rf7 22.Qf7 Qf7 23.Bf7 Rf8 (23...Bc2 24.e4 Bg5 25.f4+-) 24.Bd5 h6 (24...b6 25.e4 Bd7 26.Rac1+-) 25.Bb7 Bf6 26.Bf3 (better 26.Rac1 Rf7 27.Bc6 Be6+-) 26...Ba1 27.Ra1 Bd3 28.Bc6 (better 28.Rc1 Rf7+-) 28...a6 (28...Rc8+-) 29.b6 a5 30.b7 Ba6 31.b8Q Rb8 32.Bb8 Kh7 33.Bg3 (better 33.Be4 Kg8 34.Bg6 Bd3 35.Bd3 Kf7+-) 33...Bc4 34.Bb5 Be6 35.Bd3 (35.Bc7 Bd5+-) 35...g6 36.e4 Kg7 37.Bb5 (37.Bc7!? Kf7+-) 37...Kf6 38.f3 h5 39.Bf2 (39.Bc7 Bc8+-) 39...Kg5 40.Rc1 h4 41.Be1 (better 41.Rc6 Bf7 42.Be3 Kh5+-) 41...Kh5 42.Bd2 g5 43.Ba5 (better 43.Rc6!? Kg6 44.Re6 Kf7+-) 43...g4 44.h3 (44.Rc6 Kg6 45.Re6 Kf7+-) 44...gh3 45.gh3 Bh3 46.Kh2 Be6 47.Bd2 h3 48.Be3 (48.Be8 Bf7 49.Rc6 Bg6 50.Rc5 Kh4 51.Be1) 48...Kh4 49.Bf2 (49.Rc5 Bf5 50.ef5 Kh5 51.Be8 Kh4 52.Rc4) 49...Kh5 50.Bg3 (better 50.a5 Kg5 51.Be3 Kf6+-) 50...Kg5 51.Rc5 Kf6 52.Re5 (52.Re5 Bc8 53.Re8+-) 1–0. BeepBeepImAJeep (2605) – djorfchess20 (1740), lichess.org, 2016.

6.Nc3 Be6 7.cd5 (7.Nf3 dc4 8.d4 cd3 9.Bd3 a6 10.bc6 Nbc6 11.0-0 Rc8 12.Qb1) 7...Nd5 8.Nf3 a6 9.a4 Bb4 10.Qb3 Bc3 11.Bc3 0-0 12.Bc4.

6.Nf3 Be6 7.Qb3 a6 8.a4 dc4 9.Bc4 Bc4 10.Qc4 ab5 11.ab5 Ra1 12.Ba1 Qd5 13.Qd5 Nd5 14.bc6 Nc6 15.Nc3 Nc3 16.Bc3 b5 17.d4 b4 18.Bb2 ed4 19.Nd4 Nd4 20.ed4 Bd6 21.Kd2 0-0 22.Rb1 Rb8 23.Kc2 Kf7 24.Bc1 Ke6 25.g3 Rc8 26.Kd3 Rc3 27.Ke2 Kd5 28.Bd2 Rc2 29.Kd3 Rc4 30.Be3 Rc3 31.Kd2 Kc4 32.Rc1 Rc1 33.Kc1 Bc7 34.Bd2 Bb6 35.d5 Bc5 36.Kc2 b3 37.Kb2 Bd4 38.Ka3 b2 39.Ka2 Kd3 0–1. purplegadge (1795) – soltpl (1880), gameknot.com, 2014.

6.Nf3 Be6 7.Qb3 a6 8.Nc3 ab5 9.cb5 Nd7 10.d4 Kf7 11.Be2 e4 12.Nd2.

6.Nf3 Be6 7.d4 dc4 8.Nc3 Nd5 9.de5 Bb4 10.Qd2 cb5 11.Nd4 Qb6 12.ef6.

5.c4 Bf5

6.d3 dc4–/+ 7.e4 Be6 8.Nc3 cb5 9.Qc2? b4–+ 10.Rd1 bc3 11.Bc3 cd3 12.Bd3 Nc6 13.Nf3 Qe7 14.0-0 Rd8 15.Bb5 Rd1 16.Rd1 Kf7 17.Nh4 Qc5 18.Qd3 Nh6 19.a4 a6 20.Bc6 Qc6 21.a5 Be7 22.Qf3 Bg4 23.Qd3 Bd1 24.Qd5 Qd5 25.ed5 Rc8 26.Bd2 Bb3 27.h3 Bd5 28.Kh2 Rc2 29.Be3 Bd6 30.g3 g5 31.Ng2 Nf5 32.Bb6 Nd4 33.Kg1 Nf3 34.Kf1 Bc4 0–1. WillForkU – Clay56, ChessWorld.net, 2009.

6.cd5 cd5 7.Nc3 Ne7 8.Nf3 Nd7 9.Be2 Rc8 10.0-0 Nb6 11.d4 e4 12.Nd2.

6.Nf3 Bd6 7.Nc3 (7.Nh4 Be6 8.bc6 bc6 9.cd5 cd5 10.Qa4 Kf7= (10...Kf8 11.Nc3 a6 12.Be2) 11.Nc3 Ne7 12.Nb5) 7...Ne7+= 8.d4 (8.bc6 bc6 9.cd5 cd5 10.Qa4 (10.Rc1 0-0 11.Qb3 Nd7 12.Nd5) 10...Nd7= (10...Kf7 11.Nh4 Be6 12.Nb5) 11.e4 Bg6 12.Nh4) 8...Qa5 (8...Nd7 9.Be2 0-0 10.0-0 Rc8 11.Qb3 ed4 12.ed4) 9.c5 (9.Be2 Ba3 10.Qd2 Bb2 11.Qb2 Nd7 12.0-0) 9...ed4 (9...Bc7 10.Nd2 ed4 11.ed4 Bf4 12.Nb3) 10.ed4 (worse is 10.cd6 dc3 11.Bc1 Nc8–+ 12.Qb3; 10.Qd4?! Bc7 11.Be2 cb5+= (11...0-0 12.0-0) 12.Qd2) 10...Bf4 (10...Bc7 11.Bd3 Bd3 12.Qd3) 11.g3 (11.Bd3 Kf7 12.g3) 11...Bh6 12.Nh4 (12.Bg2 Qb4 (worse is 12...cb5 13.Nh4+/–) 13.Qb3 Qb3 14.ab3 Kf7+=) 12...Kf7 (12...Qb4 A) worse is 13.Nf5 Qb2 (worse is 13...Nf5 14.Rb1 Nd4 15.Bd3+/–) 14.Nd6 Kf8–/+; B) 13.Qb3 Qd4 14.Rd1 Qe5 15.Be2=) 13.Nf5+= Nf5 14.Bh3 Re8 15.Kf1 Qb4 16.Rb1 Nd4 17.Kg2 Ne6?? (17...Qc4 18.Qh5 Kf8+-) 18.Qh5+- Kf8 (18...g6 19.Qh6 Ng5 20.bc6 Nc6 21.Ba1 Qc5 22.f4 Nh3 23.Kh3+- (23.Qh3?! Kg8 24.Rb7 Re7 25.Re7 Qe7+-)) 19.Rhe1 Nd7 20.Be6 Re7 (20...Re6 21.Re6 Nc5+-) 21.Bd5! Rae8 (21...cd5 22.Nd5 Double attack (22.Qf5 Decoy)) 22.bc6 bc6 23.Bb3 (23.Re7!? Re7 24.Bc6 Qd4+-) 23...Nc5 24.Re7 Re7 25.Rd1 Nd7 26.Qf5 g6 (26...Ke8+-) 27.Qh3 (27.Qh3 Ke8 28.Qh6+-) 1–0. Sokolski,Alexey – Csaszar, corr, 1958.

6.Nf3 Nd7 7.bc6 (7.Nh4 Be6 8.bc6 bc6 9.cd5 cd5 10.Nc3 Nh6 11.Bb5 Rb8 12.Rb1) 7...bc6 8.cd5 cd5 9.Nc3 Rb8 10.Nh4 Rb2 11.Nf5 g6 12.Ng3.

6.Nf3 Ne7 7.d4 (7.Nc3 Nd7 8.d4 Qa5 9.Qd2 Rc8 10.Rd1 Kf7 11.Be2 cb5 12.Nb5) 7...Nd7 8.de5 Ne5 9.Ne5 fe5 10.bc6 Nc6 (10...d4 11.cb7 Rb8 12.Qa4) A) worse is 11.Qd5 Qc7 (11...Bb4 12.Nc3) 12.Be2 Rd8+=; B) 11.cd5 Bb1 12.Bc3+= (worse is 12.Qb1 Bb4 13.Ke2 Qd5–/+; 12.Rb1?! Qa5 13.Ke2 Rd8+=.

5.d4 Bb4

6.c3 Bd6 7.c4 Ne7 8.de5 fe5 9.c5 Bc7 =.

6.Bc3 Qa5 7.Qd2 Bc3 8.Nc3 ed4 9.Qd4 Ne7 =.

6.Bc3 Bc3 7.Nc3 Ne7 =.

6.Bc3 Bd6 7.de5 fe5 8.bc6 Nc6 9.Qd5 +=.

6.Bc3 Qe7 7.bc6 bc6 8.Nf3 Bg4 9.Be2 Nd7 =.

5.d4 ed4

6.ed4 Bd6. Franke.

6.Qd4 Bd6 7.Nf3 Ne7 8.Nc3 Be6 9.Be2 0-0 10.0-0 c5 (10...c5 11.Qa4 Nd7=). Rossbach – Schirmer,Michael, corr SOK–90–63, 1990.

6.Bd4 Qa5 7.Bc3 Qa4 8.bc6 bc6 9.Bd3 Bg4 =.

6.Bd4 a6 7.bc6 Nc6 8.Nf3 Bd6 9.Bd3 Nge7 =.

6.Bd4 Bb4 7.c3 Bd6 8.bc6 bc6 9.Bd3 =.

6.Bd4 c5 7.Bc3 Be6 8.Nh3 Qd6 9.Nf4 Bf7 +=.

6.Bd4= Bd6 7.c4 Ne7 8.Nc3 Be6 (8...c5 9.Bf6 gf6 10.Qh5 Kf8–/+) 9.Bd3?? (9.c5 Be5=) 9...Nf5?? (better is 9...c5 10.Nf3 dc4–+) 10.cd5 Nd4 11.de6 Ne6 12.Qh5 Kd7 13.Bf5 (13.Rb1!?+/–) 13...g6= 14.Be6 Ke6 15.Qg4 Kf7 16.Nf3 (16.bc6 Nc6 17.Rd1 Rc8=) 16...Qa5 (16...cb5 17.Rd1=) 17.Qc4+= Kg7 18.0-0 (18.Rc1 Rd8=) 18...Bb4 19.Rac1 cb5 (19...Re8 20.Nd4+=) 20.Nb5 Nc6 21.Nfd4 Nd4 (21...Rhe8 22.Nc6 bc6 23.Qc6+-) 22.Nd4 Rhc8 23.Ne6 Kh8?? (better is 23...Kg8 24.Qc8 Rc8 25.Rc8 Kf7 26.Nd8 Ke7 27.Nb7 Qa2 28.Rc7 Ke6 29.Nd8 Kf5 30.Rh7 Qd2+/–) 24.Qc8+- Rc8 (24...Qd8 25.Nd8 Rc8 26.Rc8 Kg7 27.Nb7 a5+-) 25.Rc8 1–0. Richter,Rainer (2220) – Sebestyen,A, Timisoara op, 1995.

6.Bd4 Bd6 7.c4 Ne7 8.Qh5 g6 9.Qh4 Nd7 =.

6.Bd4 Bd6 7.Bd3 Qa5 8.Qd2 Qd2 9.Nd2 c5 =.

6.Bd4 Bf5 7.Nf3 Bd6 8.c4 a6 9.cd5 ab5 =.

6.Bd4 Nh6 7.Bd3 c5 8.Bc3 Be6 9.Nf3 Bd6 =.

5.d4 Bd6

6.de5 fe5 7.Be5 Be5 8.Qh5+/– Kd7 9.Qe5 Qe7 10.bc6 bc6 11.Qd4 Qf6 12.c3 Qd4 (12...Ke8 13.Nf3+/–) 13.cd4+- Na6 14.Nf3 Ne7 (14...Nb4 15.Kd2 Nf6 16.Nc3+-) 15.Nc3 Nb4 (15...Rb8 16.Ne5 Ke8 17.Rc1+-) 16.Rc1 Ng6 (16...Ba6 17.Ne5 Ke6 18.a3 Bf1 19.Kf1+-) 17.a3 Na6 18.h4 h5 (18...Rb8 19.h5 Ne7 20.h6+-) 19.Rh3 Kd6 (19...Rg8 20.Rg3 Ne7 21.Rg5+-) 20.Rg3 Rh6 (20...Nf8 21.Rg7 Ne6 22.Rf7+-) 21.Bd3 Ne7 22.Rg7 (better is 22.Ne5+-) 22...Nf5 (22...Nc7+-) 23.Bf5 Bf5 24.Ne5 Be6 (24...Nc5 25.Nb5! cb5 26.Rc5 Rc8 27.Nf7 Ke6 28.Nh6 Rc5 29.dc5 Be4+-) 25.Nb5! cb5 1–0. Taulien,Hans_Juergen (2350) – Boldt,Alex (1960), 2002.

6.de5+= fe5 7.Be5 Nf6 8.Bd6 Qd6 9.c4 0-0 10.Nf3 Bg4 11.Nbd2 Nbd7 12.Be2 dc4 13.Bc4 Kh8 14.0-0 c5 (14...Ne5 15.Rc1+=) 15.Qc2 Ne5 16.Be2 Rad8 17.Nc4 (17.Rad1 Nf3 18.Nf3 Qb6+/–) 17...Nc4+= 18.Qc4 Qe7 19.Rfd1 Ne4 20.Rd8 Rd8 21.Rd1 Rd1 22.Bd1 Bf3 23.Bf3 (23.gf3?? Qg5 24.Kf1 Nd2 25.Ke2 Nc4–+) 23...Nd2 24.Qd5 Nf3 25.Qf3 h6 26.Qd5 Kh7 27.g3 (27.e4 g5+/–) 27...b6 28.e4 g6 29.e5 Kg7 30.f4 Kf8 31.Kf2 h5 32.Ke3 Qc7 33.Ke4 Qe7 34.Qd6 (34.Qd6 Qd6 35.ed6+-) 1–0. Franke,Claus Peter – Stabenow,Juergen, corr SOK–87–12, 1988.

6.de5 fe5 7.Be5 Nf6 8.Bd6 Qd6 9.c4 Be6 10.Nf3 idea Ng5.

6.de5+/– fe5 7.Be5 Nf6 8.Bd6 Qd6 9.Nf3+=.

6.de5 fe5 7.Be5 Nf6 8.Nf3 0-0 9.Nbd2 Bg4 10.Bd6 Qd6 11.Rb1 Nbd7 12.Be2 Rae8 (12...Nc5 13.bc6 bc6 14.h3=) 13.0-0+= c5 14.Rb3 h6 (14...Bf3 15.Nf3 Ne4 16.Ra3+/–) 15.c4 Nb6 16.cd5 Kh8 (16...Nfd5!? 17.h3 Bf5+=) 17.Nh4+/– Be2 18.Qe2 Nfd5 19.Qd3 Re6 20.Nc4 (20.Rc1 Rc8 21.Nf5 Qd7+/–) 20...Nc4 21.Qc4 Nb6 22.Qg4 Rf7?? (better is 22...c4 23.Rc3 Ref6+=) 23.Rd1+- (23.Rd1 Qe7 24.Ng6 Rg6 25.Qg6+-) 1–0. Simonyi,Zoltan (2195) – Juhasz,Bencze (1860), Open Senta, 2010.

5.d4 e4

6.Nc3 Bb4 7.bc6 Nc6 8.Bb5 (8.a3 Ba5+=) 8...Nge7 (8...Qa5 9.Qd2+=) 9.Nge2 0-0 10.h3 (10.0-0 Qa5+=) 10...f5 (10...a6 11.Bc6 bc6 12.Rb1–/+) 11.0-0+= Ng6 12.Ba4 f4 (12...Be6 13.Rb1–/+) 13.Nd5= f3 (13...Qd5 Decoy theme: d5 14.Bb3 A pinning theme) 14.gf3 Bh3 (14...Qd5? 15.Bb3 Qb3 16.ab3 ef3 17.Nf4 Nf4 18.ef4 Rf4 19.d5+-; 14...ef3?! 15.Ng3 Bd6 16.Bb3–/+) 15.fe4 Rf3 (better is 15...Qg5!? 16.Ng3 Bf1 17.Qf1 Ba5+=) 16.Ng3+/– (16.Nb4 Qg5 17.Ng3 Rg3 18.Kh2 Re3 19.Bb3 Rb3–+) 16...Bg4 17.Qd3 (17.Nb4 Rg3 18.fg3 Bd1 19.Nc6 Qg5 20.Rad1 Qg3 21.Kh1 Qh3 22.Kg1 Qe3 23.Rf2 Rf8 24.Ne7 Ne7 25.Bb3 Kh8–+) 17...Qh4 18.Qc4 (better is 18.Qe2!?+/–) 18...Rg3= 19.fg3 Qg3 20.Kh1 Nh4 The mate threat is Qg2 21.Nf4 (21.Nb4?? Kh8 22.Rf8 Rf8 23.Qe2 Be2 24.Bc6 Bf3) 21...Kh8 Threatening mate: Nf3 22.Bc6 (22.d5 Nf3 23.Bg7 Kg7 24.Qc3 Bc3 25.Rf3 Bf3 26.Ng2 Qg2) 22...Nf3 0–1. Rauramaa,Kari – Gruenthal,Riho, corr Finland, 1979.

6.c4 Bb4 7.Bc3 Bc3 (7...Be7 8.bc6 bc6 9.Nd2=) 8.Nc3+= Be6 9.bc6 bc6 10.Nge2 Ne7 11.Nf4 Bf7 12.cd5 cd5 (12...Nd5 13.Nfd5 Bd5 14.Qh5 g6 15.Qd1+=) 13.Bb5+/– Kf8 (13...Nbc6 14.Rc1+/–) 14.0-0 a6 15.Ba4 Nd7 16.f3 Nb6 (16...Rc8!? 17.Rc1 ef3 18.Rf3 Ke8+/–) 17.fe4+- de4 18.Ne4 Ned5 19.Nd5 Bd5 20.Nc5 Nc4 21.Rb1?? (better is 21.Qe2+-) 21...Ne3+= 22.Qe2 Attacking the isolated pawn on a6 22...Nf1 23.Nd7 Kf7 24.Qh5 (24.Qh5 g6 25.Qd5 Kg7 26.Rf1+-) 1–0. pcmvr (2870) – cczekaj (2385), net–chess.com, 2009.

6.c4 Be6 7.Nc3=.

6.c4 Ne7 7.Nc3 Be6 (7...Kf7 8.Nh3+/–) 8.Nge2 dc4 (8...Nd7 9.Nf4 Bf7 10.Be2+/–) 9.bc6 (9.Nf4 Bd5+/–) 9...Nbc6 (9...Nec6 10.Nf4 Bf7 11.d5+/– (11.Ne4?! Bb4 12.Bc3 Bc3 13.Nc3 Qa5=)) 10.Nf4+/– Bf7 11.d5 (11.Ne4?! Ng6 12.Ng6 hg6+=) 11...Ne5 12.Qa4 (better is 12.Bc4!? Nc4 13.Qa4 Nc6 14.Qc4+/–) 12...Qd7+= 13.Nb5 Kd8?? (better is 13...0-0-0 14.Na7 Kb8+=) 14.Be5+- fe5 15.Ne6! Be6 (15...Kc8 16.Qc4 Nc6 17.dc6 Qc6+-) 16.de6 Qe6 (16...Qc6 17.Rd1 Kc8 18.Bc4 a6+-) 17.Rd1 Kc8 18.Rd6 Qd6 (18...Qg6 19.Rg6 hg6 20.Bc4+-) 19.Nd6 Kc7 20.Nb5 (better is 20.Ne4 Nc6 21.Bc4 Rc8+-) 20...Kb6 (20...Kb8 21.Bc4 a6 22.Nc3+-) 21.Bc4 Nc6 (21...a5 22.0-0 Nc6 23.Rb1+-) 22.0-0 a6 23.Nc3 Ka7 (23...Rb8 24.Rd1 Rc8 25.Rb1 Nb4 26.Ba6 Rc3 27.Qb5 Kc7 28.Qb7 Kd8 29.Rd1 Rd3 30.Bd3 Nd3 31.Qe4+-) 24.Rb1 Rd8 (24...Rc8 25.Ba6! ba6 26.Nb5 Kb7 27.Nd6 Kc7 28.Nc8 Bc5+-) 25.Rb7! Kb7 26.Qa6 Kb8 27.Qb6 Ka8 (27...Kc8 28.Qc6 Kb8 29.Ba6 Rd1 30.Nd1 Bc5 31.Qb7) 28.Qc6 Ka7 (28...Kb8 29.Ba6 Rd1 30.Nd1 Bc5 31.Qb7) 29.Nb5 Kb8 30.Qc7 Ka8 31.Qa7 1–0. Taulien,Hans_Juergen (2350) – Buelling,Stephan (2205), remoteschach.de, 2002.

6.c4 Ne7 7.bc6 bc6 8.cd5 cd5 9.Bb5 Nec6 10.Ne2 Bb4 11.Nd2 Bd7 12.0-0 Bd6 13.Nc3+= (13.Nc3 Nb4 14.a3 Bb5 15.Nb5+=). gtate (2005) – arsigval (1970), net–chess.com, 2004.

6.Nd2 Ne7 7.c4 Ng6 8.bc6 bc6 9.cd5 cd5 10.Ne2 Bd6 11.Nc3 Bc7 12.Qa4 Bd7 13.Bb5 Bb5? (13...Ba5 14.Nd5 Bd2 15.Kd2 Ne7 16.Ne7 Qe7+/–) 14.Qb5+- (14.Nb5?! 0-0+=) 14...Qd7 15.Nd5 Qb5? (15...Na6 16.Nc7 Nc7 17.Qd7 Kd7 18.Ne4 Na6+-) 16.Nc7 Kd7 17.Nb5 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

6.Nd2 f5 7.a4 a6 8.c4 Nf6 9.c5 ab5 10.ab5 Ra1 11.Qa1 cb5 12.Bb5 Bd7 13.Qa4 Qc7= 14.Ne2 g6 15.0-0+= (15.0-0 Bg7 16.Nf4+=). Friberger,Torbjoern – Johansson,Mattias, corr SSKK 2–753, 1991.

5.Nf3 cb5

6.Bb5 Nc6 7.0-0=.

6.Bb5 Bd7 7.Bd7 Nd7 (7...Qd7 8.0-0=) 8.0-0 (8.Nc3 Nb6=) 8...Bd6 (8...Qb6 9.Ba3=) 9.d3 (9.Nc3 Ne7=) 9...Ne7 10.Nbd2 Rc8 11.c4 dc4 (11...Nc5 12.Qc2=) 12.Nc4 Bb8 (12...Nb6 13.Nb6 Qb6 14.Qa4 Rc6 15.Rfb1=) 13.Rc1 0-0 (13...Nc5 14.d4 ed4 15.ed4+= (worse is 15.Qd4 Nd3+=)) 14.Ba3+= b6 15.Nfd2 (15.Qb3 Kh8+=) 15...Nc5 (15...f5 16.Qb3 Kh8 17.Rc2=) 16.Bc5 Rc5 17.Qb3 Kh8 18.Rfd1 Rd5 19.Nb1 (19.Nf3 b5 20.Na3 a6=) 19...b5 20.Nca3 a6 21.Nc2 Qd7 (21...f5 22.Nb4 Rd6 23.Nc3=) 22.Nb4 (22.d4 ed4 23.Nd4 Qd6+=) 22...Rd6 23.Rc3 (23.Nc3 f5=) 23...Rd8 (23...a5 24.Nc2=) 24.Qf7 (24.Qa3 Qe6=) 24...a5+= 25.Nc2 h6 (25...b4 26.Rb3+=) 26.Ne1= b4 (26...e4 27.Nd2 b4 28.Rb3=) 27.Rb3 (27.Rc5 Nc6 28.Qd7 R8d7= (28...R6d7? 29.Rc6 f5 30.Rdc1+-)) 27...Nc6 (27...Nd5 28.Qh5+=) 28.Qd7 (28.Qh5 a4 29.Rb2 Kh7=) 28...R8d7 29.a3 (29.Nd2 a4 30.Rbb1 f5+=) 29...a4 30.Rb2 b3 (30...ba3!? 31.Na3 Rd5+=) 31.Nc3= Ra7 32.Nb5 Rdd7 (32...Rb7!? 33.Nd6 Bd6=) 33.Na7+/– Ba7 34.Rc1. Kalchbauer,M – Vinarcik,Jan, Slovan open, Bratislava, 1994.

6.Bb5 Bd7 7.Ne5 fe5 (7...Bb5 8.Qh5 Ke7 9.Qf7 Kd6 10.Nc3+-) 8.Qh5 Ke7 9.Qe5 Be6 10.f4 Nc6?? (better is 10...Nd7 11.Qd4 Nh6–/+) 11.Bc6+/– bc6 12.f5 Kd7? (better is 12...Qd6 13.Ba3 c5+/–) 13.Qe6+- Kc7 14.Be5 Kb7 15.Nc3 Qh4 (15...Rc8+-) 16.g3 Qh6 (16...Qb4 17.Qd7 Ka6 18.Qc6 Qb6 19.Qa8 Bd6 20.Bg7 Ne7 21.Bh8 Qb7+-) 17.Rb1 Ka6 (17...Bb4 18.Rb4 Ka6 19.Ra4 Kb6 20.Nd5 Kb5 21.Nc3 Kb6 22.Qb3 Kc5 23.Ne4) 18.f6! Ne7 (18...Nf6 19.Qc6) 19.Qd6 gf6 (19...Qe3 20.de3 Nc8 21.Qc6 Nb6 22.Rb6 ab6 23.Qa8) 20.Qa3 1–0. b4_player (2150) – chechenchess (1675), GameColony.com, 2004.

5.Qh5 g6

6.Qd1 Bd7 7.a4 Bb4 8.c4 a5 9.Nf3 c5 (9...e4 10.Nd4=) 10.Be2 (10.cd5 Bf5+=) 10...b6 (10...e4 11.Ng1 d4 12.ed4 cd4 13.Bd4 Bb5 14.Be3=) 11.0-0 Be6 12.cd5 Bd5 13.Nc3 Bf3 14.Bf3 Ra7 15.Nd5 Qd6 16.e4 (better is 16.d4!? Nd7 17.Qd3 cd4 18.ed4+-) 16...Ne7+= 17.Qc2 (17.Ne3 Rd7+= (17...Bd2? 18.Nc4 Qd8 19.Nd2+-)) 17...Nd5= 18.ed5 0-0 19.Rad1 Nd7 20.Be4 f5 21.Bf3 e4 (better is 21...Nf6!?–/+) 22.Be2= Qd5?? (better is 22...Re8=) 23.Bc4+- Nf6 (23...Qf7 24.d3 Re8 25.Bf7 Kf7 26.de4 Re4 27.Rd6+-) 24.Bd5 (better is 24.Bf6 Rf6 25.Bd5 Kg7+-) 24...Nd5 25.Qc4 Rd7 26.d3 (26.d4 Rc8 27.dc5 Rc5+-) 26...e3 (26...Re8 27.de4 Re4 28.Qa2+-) 27.fe3 Rfd8 (27...Rff7 28.Rf3 f4 29.ef4+-) 28.e4 fe4 (28...Re8 29.g4 Kf7 30.ed5+-) 29.de4 (29.de4 Ba3 30.Ba3+-) 1–0. GuestLLWG – GuestMFTM, freechess.org, 2017.

6.Qd1 Bd7 7.a4 cb5 8.ab5 Ne7 9.c4 (9.Nc3 Be6=) 9...dc4 (9...Be6 10.d4 dc4 11.de5=) 10.Bc4 Bg7 (10...Nf5 11.Nc3=) 11.Qb3 1–0. GuestSDWF – GuestMPSW, freechess.org, 2016.

6.Qd1 Bd7 7.a4 Bd6 8.Ba3 Ba3 9.Ra3=.

6.Qd1 Bd7 7.a4 Ne7 8.c4 Bg7 9.Nc3 (9.cd5 cd5 10.Be2 a6=) 9...0-0 (9...Be6 10.cd5 Nd5 11.Nf3=) 10.cd5= cd5 11.Nf3 (11.Ba3 Be6=) 11...a6 (11...Be6 12.Rc1=) 12.Be2 (12.Qb3 Be6=) 12...ab5 (12...Be6 13.Ba3=) 13.ab5 Ra5 (13...Ra1 14.Qa1 Be6 15.0-0=) 14.0-0 (14.Ra5 Qa5 15.Qb3+/–) 14...Qb6? Increasing the pressure on the isolated pawn on b5 (14...Ra1!? 15.Qa1 Be6+=) 15.Qb3 (15.Ba3 Qe6+/–) 15...Be6 (15...Ra1 16.Ra1 (worse is 16.Ba1 Be6+=) 16...Be6 17.Ba3+/–) 16.Ra5 (16.Ba3 Qa7+/–) 16...Qa5 17.Ra1 (17.Ba3 Qc7+/–) 17...Qb6 (17...Qd8 18.Ba3+=) 18.Na4 (18.Ba3 Qa5+/–) 18...Qd6 (18...Qd8 19.Nc5 Qb6 20.Ba3+/–) 19.Ba3+/– Qd8 20.Be7 (20.Nc5!? Bc8 21.Bb4+/–) 20...Qe7= 21.Nb6 (21.d4=) 21...d4 (better is 21...Qd6!? 22.Na8 Rc8=) 22.Bc4+/– Bc4 23.Qc4 Qf7 (23...Kh8 24.Ra7+=) 24.Nd5 (24.Ra7 Qc4 25.Nc4 Rc8 26.Rb7 Rc4 27.Rb8 Bf8+/–) 24...Nd7 (24...de3 25.de3 h6 26.e4+=) 25.e4 (25.ed4 e4 26.Re1 ef3+-) 25...Kh8 26.Qc7 Qe8 (26...f5 27.Ng5 (27.Qb7?! fe4 28.Ra7 ef3 29.Qd7 Qg8+=) 27...Qe8 28.ef5 gf5 29.Qb7+/–) 27.Qb7 (better is 27.Ra7 f5 28.Qb7+-) 27...Qb8?? (better is 27...Nc5!? 28.Qc6 Ne4 29.Qe8 Re8+/–) 28.Qc6 (better is 28.Qd7 Rd8 29.Qh3+-) 28...Qc8 29.Ra8?? (better is 29.d3+-) 29...Qc6 (better is 29...Qa8 30.h3 Qc6 31.bc6 Nc5–+) 30.Rf8+- (30.bc6?? Ra8 31.g4 Nc5–+) 30...Bf8 (30...Nf8 31.bc6 Ne6+-) 31.bc6 Nb6 32.Nb6 (32.Nb6 Bd6 33.Nd5+-) 1–0. GuestPRXR – secki, freechess.org, 2016.

6.Qd1 Be6 7.Nf3 Qb6 (7...Ne7 8.Nc3=) 8.a4 (8.Ne5!? a6 9.a4+/-) 8...Nh6 9.Be2 Be7 10.0-0 Kf7 (10...0-0 11.d4 e4 12.Nfd2=) 11.Nc3 c5 12.d3 d4 13.Ne4 Nd7 14.c4 a5 15.ed4 cd4 16.Ba3 Ba3 17.Ra3 Nc5 18.Nc5 Qc5 19.Ra1 b6 20.Nd2 Nf5 21.Bf3 Rac8 22.Re1 g5 (22...Qc7 23.Rc1=) 23.Bh5 Kg7 24.Ne4 Qe7 25.Qe2 Nd6 (25...Rhf8 26.Bf3+=) 26.Nd2 (26.Ng5!? Bf5 27.Nf3+/-) 26...Bf5 27.Bf3 h5 28.Bh5 (28.Ne4 Ne4 29.Be4 Bg4+=) 28...Rh6 (28...Kf8 29.Bg4 Qh7 30.h3+=) 29.h3 (29.Bg4 Qe6 30.Bf5 Qf5+/-) 29...Rch8+= 30.Bg4 Qe6 (30...Bg4 31.Qg4 Rh4 32.Qe2=) 31.Bf5+/- Qf5 32.Qf3?? (32.f3 Nb7+/-) 32...Qg6?? (better 32...Qf3 33.Nf3 g4-/+) 33.Qd5 (33.Qc6 Nf7 34.Qb6 Qd3 35.Qa5+=) 33...Nf5? (better 33...Nf7 34.f3 Qd3=) 34.Qb7+- Kf8 35.Qb8 (35.f3 Ne3 36.Qb8 Kg7 37.Qb6 Qd3+/-) 35...Kf7 36.Qb6 g4 37.Qc7 (37.Qa5!? gh3 38.g3 Ne7+-) 37...Ne7+/- 38.Ne4 (38.Qa5 Rh3 39.gh3 gh3 40.Kf1 Qd3 41.Kg1 Qg6 42.Kf1 d3 43.Re5 fe5-+) 38...gh3 39.g3 h2 (39...Qh5 40.Kh2 (40.Qa5 Qf3 41.Nd6 Kg6 42.Kf1 h2 43.Re5 h1Q) 40...Qf3 41.Rg1 Qd3 42.Rae1+/-) 40.Kh1 (better 40.Kg2+-) 40...f5? (40...Qh5 41.Nd2 Qf5 42.f4+/- (42.Qa5 Qf2 43.g4 Rg8-/+)) 41.Qe5 (41.Nd2 Qd6 42.Qd6 Rd6 43.Re5 Kf6+-) 41...Re8? (better 41...fe4 42.Re4 Qd6 43.Qd6 Rd6+-) 42.Nc5 (42.Nd2 Qb6+-) 42...Qg4 43.Qf4 (43.Qe2!? Qe2 44.Re2 f4 45.gf4 Reh8+-) 43...Qf4 44.gf4 Ng6?! (44...Rh3 45.Rad1 Rh4 46.Re5 Rf4 47.Rde1 (47.Kh2 Rg8 48.Rf5 Nf5 49.Rb1 Rh4) 47...Rf2 48.Nb7+-) 45.Re8 Ke8 46.Ne6 (46.b6 Ne7 47.b7 Rb6+-) 46...Nh4 (46...Kd7 47.Nd4 Nf4 48.Rd1+-) 47.Re1 (47.Nd4 Rd6 48.Re1 Kd7+-) 47...Kf7 (47...Nf3 48.Ng7 Kd7 49.Re7 Kd8 50.Re8 Kc7+-) 48.Nd4 Nf3 (48...Rd6 49.Nc6 Nf3+-) 49.Nf3 Rg6 (49...Kf6 50.c5 Rh7 51.c6+-) 50.Ng5 (50.Ne5 Kf6 51.Ng6 Kg7 52.b6 Kg6 53.b7 Kg7 54.b8Q Kh7 55.Re7 Kh6 56.Qg8 Kh5 57.Qg5) 50...Kf6 51.Kh2 (51.Re6 Kg7 52.Rg6 Kg6 53.b6 Kh5 54.b7 Kg6 55.b8Q Kh5 56.Qh8 Kg4 57.Qh3 Kf4 58.Qg3) 51...Rh6 (51...Rg8 52.Re6 Kg7 53.Ra6+-) 52.Kg3 Rh5 53.Re6 (53.c5 Rh8 54.b6 Rb8+-) 53...Kg7 54.Ra6 Rh8 (54...Rh1 55.d4+-) 55.Ra5 Kg6 56.Ra7 (56.Ra6 Kg7+-) 56...Rd8 57.Ra6 (57.Ra6 Kh5 58.d4+-) 1-0. bjoernsen (2325) - ehsanpanjali2000 (2205), Rated Blitz game, lichess.org, 2016.

6.Qd1 Bg7 7.a4 Nh6 (7...Ne7 8.Be2=+) 8.Nf3 0-0 9.Be2 a6 10.c4 (10.0-0 c5=) 10...Be6 (10...e4 11.Nd4=+) 11.Qc2 (11.cd5 Bd5 12.bc6 Nc6=) 11...Nd7 (11...ab5 12.cd5 cd5 13.Bb5=+) 12.0-0= Rc8 13.d3 (13.ba6 ba6 14.d4 Nf7=) 13...g5 (13...ab5 14.c5-/+) 14.Nc3= g4 15.Nd2 f5 16.ba6 ba6 17.Ba3 Rf6 (17...Re8 18.Rab1=) 18.Qa2 (18.d4 Ra8+=) 18...d4= 19.ed4 ed4 20.Ncb1 Rg6 21.Re1 Qh4 (21...Be5 22.Bd1=+) 22.Bf1 c5 23.Nb3 f4 24.g3 (24.N1d2 f3=+) 24...Qf6 (24...Qh5 25.N1d2-/+) 25.gf4 (better 25.N1d2!?=+) 25...Qf4-/+ 26.Bc1 Qf6 27.Bg2 (better 27.N1d2-/+) 27...Nf5?? (better 27...Ne5 28.Qc2 Nf3 29.Kf1 Nh2 (29...Ne1?! 30.Ke1 Qe5 31.Be4-+) 30.Ke2 g3-+) 28.Re6!+- Qh4 (28...Qe6 29.Bd5 Pinning (29.Bd5 Decoy)) 29.Rg6 (better 29.Qe2!? Rd8+-) 29...hg6 30.Qe2 (30.Bf4!? Re8 31.Qd2 Qf6+-) 30...Be5 31.Qe4 (31.Kf1!? Ne3 32.Be3 de3+-) 31...Qh2 32.Kf1 Rf8 33.Ra2?? (33.Ke2 Nh4 34.Qd5 Rf7 35.Be4=+) 33...Ng3 34.Ke1 Qg1 35.Kd2 (35.Bf1 Qf1 36.Kd2 Rf2 37.Qe2 Qe2) 35...Rf2 36.Qe2 Re2 0-1. bjoernsen (2285) - hualason (2320), Rated Blitz game, lichess.org, 2016.

6.Qf3 Bf5 =+.

6.Qh4 Bd6 7.f4 a6 8.c4 dc4 9.Bc4 ab5 10.Bd3 Kf7 11.Nf3 Nd7 12.0-0 Kg7 13.fe5+= Ne5 14.Bc2 Qc7 15.Nc3 Nh6 16.Nd4 g5 17.Qf2?? Neg4–+ 18.Qf3 Bh2 19.Kh1 Bg1?? 20.Qh3?? Nf2 21.Rf2 Bh3 22.gh3 Bf2?? 23.Ne6+= Kf7 24.Nc7 Rad8 25.Ne4+- Bh4? 26.Rf1 f5 27.Bh8 Rh8 28.Nd6 Ke7 29.Nf5 Nf5 30.Rf5 (30.Rf5 Rc8 31.Nb5 cb5 32.Bb3+/–) 1–0. elsh1403 – sakkmat, internet, 2011.

6.Qh4 Bd7 7.c4 dc4 8.Bc4 cb5 9.Bb3 Nc6 10.f4 Bd6 11.Nf3 ef4 12.ef4 Qe7 13.Kf2 Bc5 14.d4+= Bb4 15.Nc3 0-0-0 16.Nd5 Qd6 17.Rac1 Kb8 18.Nb4 Nb4 19.Rhd1 a5 20.Ne5 a4?? 21.Nf7+- Qb6 22.Bc2 Re8? 23.Nh8 Nc2 24.Rc2 Bf5 25.Rcd2 Qc7 26.d5 Qc5 27.Bd4 Qe7 28.Kg1 h5 29.Qf2 Qg7 30.Ng6! Qg6 31.Ba7 Ka8 32.d6 Rd8 33.d7 Qf7 (33...Qf7 34.Qb6 Rd7+-). elsh1403 – prutis, internet, 2011.

6.Qh4 Be6 7.Nf3 Nd7 8.Be2 Bg7 9.0-0 Ne7 10.Rd1 0-0 11.Qa4 Nb6 12.Qa5 Rc8 13.d4 e4 14.Nfd2 f5 15.Ba3 f4 16.Be7 Qe7 17.Qa7 Qc7 18.Qa3 Bh6 19.bc6 fe3 20.fe3 bc6 21.Nc3 Be3–+ 22.Kh1 Bd4 23.Qb3? Be5 24.Nce4 Bh2 25.Ng5 Bf5 26.Ndf3 Be5 27.Ne5 Qe5 28.Re1 Qf4 29.Nh7?? Qh4–+ 30.Kg1 Kh7 31.Qb6–/+ Be4 32.Qe3 Rf4 33.Bf3 Rcf8 34.Rf1?? Bf3–+ 35.Rf3 Rf3 36.gf3 Rf4 (36...Rf4 37.Kg2 Qg5 38.Kf2 Kg7 39.Qa7 Rf7 40.Qd4 Kg8=) 0–1. elsh1403 – braknika321 (1735), internet, 2011.

6.Qh4 Be7 7.Nf3 f5 8.Qa4+/– Bd7 9.c4 e4 10.Bh8+- ef3 11.gf3 Bf6 12.Bf6 Qf6 13.Nc3 d4 14.bc6 Bc6+/– 15.Nb5 de3 16.Nc7?? Kd7 17.Qd1 e2?? 18.Be2–/+ Kc7 19.0-0 Nd7 20.d4 Nh6?? 21.d5+/– Re8 22.dc6 bc6 23.Re1 f4 24.c5! Qg5 25.Kh1 Qc5 26.Rc1 Qb6? 27.a4?? a5? 28.Bb5+- c5 29.Qd7 Kb8 30.Re8 Qd8 31.Rd8 1–0. elsh1403 (1615) – dominiczek5 (1665), internet, 2011.

6.Qh4 Be7 7.f4 Nd7 8.Nf3 e4 9.Ng5?? fg5–+ 10.fg5 Ngf6 11.gf6 Bf6 12.Bf6 Qf6 13.Qf6 Nf6 14.Be2 0-0 15.0-0 Bg4 16.Nc3 h5 17.Rab1 Be2 18.Ne2 c5 19.d3 ed3 20.cd3 Rae8 21.Nf4 Kg7 22.Rbe1 g5 23.Nh3 Kg6 24.Rf3 g4 25.Rg3?? h4–+ 26.Nf4 Kg5 27.Nh3 Kh6 28.Rg4 Ng4 29.Nf4 Rf4 0–1. elsh1403 – braknika321 (1715), internet, 2011.

6.Qh4 Be7 7.f4 Nd7 8.Nf3 ef4 9.ef4 h5 10.Bd3 Kf7 11.0-0 Nh6 12.Ng5 fg5 13.fg5 Nf5 14.Bf5 Kg8?? 15.Be6 Kh7 16.Rf7 Kg8 17.Re7 Kf8+- 18.Rf7 Ke8 19.Bh8 Ne5 20.Bf6 Qd6 21.Re7 Kf8 22.Bc8 Rc8 23.Qf4 Re8 24.Be5 Ke7 25.Bd6 Kd7 26.Nc3 1–0. elsh1403 (1680) – brzek, internet, 2011.

6.Qh4 Bf5 7.c4 Be7 8.Nf3 g5 9.Qh5 Bg6 10.Qh3 Nd7 11.cd5 cd5 12.Nc3 Bf7 13.Be2 h5 14.g4 Nh6–/+ 15.gh5? g4–+ 16.Qh4 f5 17.Qg3 gf3 18.Bf3 Rg8 19.Qh3 Nc5 20.Ke2 e4 21.Bg2 Qd6 22.Rhg1 0-0-0 23.Rac1 Kb8 24.Bh1 Nd3 25.Rb1 Rg1 26.Rg1 Nb2 27.Qf1 d4 28.ed4 Qd4 29.Qb1 Bc4 30.Ke1 Nd3 31.Kd1 Nf2 32.Kc1 Qd2 0–1. elsh1403 (1645) – anelehd (1640), internet, 2011.

6.Qh4 Bf5 7.g4? Bc2–+ 8.f4? ef4 9.ef4? Bc5 10.Nf3? Qe7 11.Be2 Bd3 12.Ne5 fe5 13.Be5?? Qh4–+ (13...Qh4 14.Kd1 Be2 15.Kc1 Nf6–+) 0–1. elsh1403 – vajgl, internet, 2011.

6.Qh4 Bg7 7.c4 Ne7 8.f4 0-0 9.Nf3 e4 10.Nd4 c5 11.Nb3 Nf5 12.Qf2 b6 13.Nc3 d4 14.ed4 cd4 15.Ne4+= Re8 16.Bd3?? Nd6–/+ 17.0-0 Ne4 18.Be4 Re4 19.Nd4? f5–+ 20.Nc6 Nc6 21.Bg7 Kg7 22.bc6 Qc7 23.d3 Re7 24.Qd4 Kf7 25.Rae1? Be6–+ 26.Re5 Rd8 27.Qc3 Bc8 28.Re7 Qe7 29.d4 Qd6 30.d5 Qc5 31.Kh1 b5 32.Re1 bc4–+ 33.Qe5 Qd6 34.Qe2? Ba6?? 35.c7? Qc7 36.Qe6–/+ Kg7 37.Qa6 Rd5 38.h3 Rd6 39.Qb5 c3 40.Qe2 c2 41.Rc1 Rd1! 42.Rd1 cd1Q 43.Qd1= Qf4 44.Qd7 Kh6 45.Qa7 Qf1 46.Kh2 Qc1 47.Qf2 f4 48.h4 Qe3?? 49.Qf1 Kh5 50.Qd1 Kh4–/+ 51.Qf3 Qf3?? 52.gf3+- Kg5 53.Kg2 Kf5–+ 54.a4 Ke6 55.a5 Kd6 56.a6 Kc6 57.a7 Kb7 0–1. elsh1403 (1625) – merk99 (1640), internet, 2011.

6.Qh4 Bg7 7.Nf3 Ne7 8.Be2 0-0 9.0-0 a6 10.e4? ab5 11.ed5 Nd5 12.c4?? bc4 13.Bc4–/+ Be6 14.Re1 Nd7 15.Nd4 Bf7 16.Nc3? ed4 17.Nd5 cd5 18.Bb3 f5 19.Qf4 Nc5 20.Bd4 Nb3 21.ab3 Ra1 22.Ra1 Re8 23.g3 Re4 (23...Re4 24.Qf3 Bd4–+) 0–1. elsh1403 – lakyluciano (1635), internet, 2011.

6.Qh4 Bg7 7.Nf3 Ne7 8.Be2 Nf5 9.Qa4 Bd7 10.0-0 0-0 11.c4 Kh8 12.Ba3 Re8 13.cd5 cd5 14.Nc3 Be6 15.d4 e4 16.Nd2 Nd7 17.Rac1 Nb6 18.Qb3 Bf8? 19.Na4 Na4 20.Qa4 Qb6 21.Nb3 Ba3 22.Qa3 Rac8 23.Nc5 Bf7 24.Qb3 Red8 25.a4 Rb8? 26.Ra1 Qd6 27.Rfc1 b6 28.Na6 Rbc8+/– 29.Qb2 Ne7 30.Rc2 Rc2 31.Qc2 Rc8 32.Qb2 f5 33.Rc1 Qd7 34.Nb4 Kg7 35.Bd1 Kf6 36.Bb3 Be6 37.h3 g5 38.Rc8 Qc8 39.Qa2 Qd7 40.Qe2 Qd6 41.Qd2 h6 42.Nc2 f4 43.Qb4 Qb4 44.Nb4 fe3 45.fe3 h5 46.Nc6 Nc6=+ 47.bc6 Ke7 48.c7 Kd7 49.Kf2 Kc7 50.g3 Kd6 51.g4? hg4 52.hg4 Bg4 53.Kg3 a6 54.Kg4+- b5 55.Kg5 ba4 56.Ba4 1–0. elsh1403 – htz, internet, 2011.

6.Qh4 Bg7 7.Nf3 Ne7 8.Be2 Nf5 9.Qa4 Bd7 10.c4 0-0 11.0-0 cb5 12.cb5 a6 13.Nc3 Be6 14.Rfd1 Nd7 15.d4 e4 16.Nd2 Nb6 17.Qb3 Bf7 18.a4 ab5 19.Bb5 Rc8 20.Ba3 Nc4? 21.Bf8 Bf8 22.Nc4 dc4 23.Qb1 Nd6 24.Ne4 Ne4 25.Qe4 Bd5 26.Qh4 Be7 27.Rac1 f5 28.Qg3 Bd6 29.Qh3 Kg7 30.g3 Ba3 31.Rc2 c3 32.Qh4?? Qh4= 33.gh4 Bb3 34.Rcc1?? Bd1–+ 35.Rd1 c2 (35...c2 36.Re1 Bb4–+) 0–1. elsh1403 – 18smok (1820), internet, 2011.

4.e3 d4

5.Bc4 c5 6.Nf3 h5 (6...e4 7.Nh4 Ne7 8.ed4 cd4 9.Qe2+=) 7.ed4 cd4 8.0-0 Bg4 (8...Ne7 9.c3 d3 10.Qb3+=) 9.Re1 Bb4? (9...Ne7 10.h3 Bf5 11.c3+/-) 10.c3 (better 10.h3!? Bf3 11.Qf3+- (11.gf3?! g5=)) 10...dc3+= 11.Nc3 Bf3 (better 11...Ne7!?+/-) 12.Qf3+- (12.gf3?! Ne7+=) 12...Qc7 (better 12...Nd7+-) 13.Bg8 Bc3 14.Rac1 (worse 14.Bc3 Rg8 15.Rac1 Nd7 16.Be5 Qc1 17.Rc1 fe5 18.Qb7 Ke7+-; 14.dc3?! Rg8 15.Ba3 Nd7 16.Qh5 g6+-; 14.Qc3?! Qc3 15.Bc3 Rg8+-) 14...a6 (14...Rg8 15.Bc3 Nd7+-) 15.Rc3 (better 15.Bc3 Rg8 16.Be5 Qc1 17.Rc1+-) 15...Qa5 (15...Qd7 16.Rd3 Rg8 17.Be5 Qe7+-) 16.Rc8 Ke7 17.Ba3 (17.Re5 fe5 18.Qf7 Kd6 19.Qe6) 17...Kd7 (17...Qa3 18.Re5!! fe5 19.Qf7 Kd6 20.Qe6) 18.Qf5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 ed4

6.Bd3 Ne7 +=.

6.Qe2 Kf7 7.Qe4+/– Qe7 8.Bc4 Be6?? 9.Be6 Qe6+/– 10.Qe6 Ke6 11.Bd4 c5 12.bc6! Nc6 13.Bc3 Bc5 14.Nh3 Nge7 15.0-0 Nd5 16.Re1 Kf7 17.d3 Nc3 18.Nc3 Bb4 19.Rab1 Bc3 20.Rb7 Kg6 21.Nf4 Kh6 22.Re6?? Rab8 23.Rb8 Rb8 24.g3 Nd4 25.Ra6 Rb7 26.Nd5 Bd2 27.c4 Kg6 28.c5 Rb1 29.Kg2 Rc1 30.Ne7 Kf7 31.Ra7 Rc5?? 32.Nf5 Kg6 33.Nd4 Rd5 34.Nf3 Rd3 35.Nd2 Rd2 36.a4 Ra2 37.a5 h5 38.a6 h4 39.gh4 Kh5 40.Rg7 Ra6 41.Rg3 f5? 42.Rf3 f4? 43.Rf4 Ra7 44.Kf3 Rb7 45.Ke4 Rb4 46.Ke5 Rb5 47.Ke6 Rb6 48.Kd7 1–0. poganinbezdom – pompkafr (1850), internet, 2011.

6.Nf3 Bc5 7.Bc4 (7.Qe2 Ne7+=) 7...Bg4 (7...Ne7 8.0-0+=) 8.0-0 (8.Qe2 Ne7 9.Qe4 Bf3 10.Qf3 Nd7 11.Qb7 Ne5+/–) 8...Ne7+= 9.Qe2 Bf3 (better is 9...Nd7!? 10.Be6 Be6 11.Qe6 d3+=) 10.Qf3+- (10.gf3?! Qd6+=) 10...c6?? (10...Nd7 11.Re1 c6 12.bc6 bc6+-) 11.d3 (better is 11.Qh5 g6 12.Qc5+-) 11...cb5 (11...Qb6 12.Qg4 g6 13.a4+=) 12.Qb7 (12.Qh5!? Kd7 13.Bb5 Kd6 14.Nd2+-) 12...Nd7+= 13.Bb5 (13.Qb5? Rb8 14.Qa4 Rb2–+) 13...Rb8 14.Bd7 Kf7 15.Be6 Ke6 16.Qe4 Kf7 17.Ba3 f5 (17...Qc7 18.Bc5 Qc5 19.Re1+=) 18.Qh4 (better is 18.Qe5 Bb4 19.Bb2+/–) 18...Rb1 (18...Bd6!?+=) 19.Bc5+/– (19.Rfb1?! Ba3 20.Rb7 a5+=) 19...Rf1 (19...Nc6 20.Qh5 g6 21.Qf3 Rf1 22.Kf1+/–) 20.Kf1 (20.Rf1 Nc6 21.Qh5 g6+-) 20...Nc6+/– 21.Qh3 g6 22.Qf3 Qd7+/– 23.Re1 Re8 24.Re8 Ke8 25.Qg3 Qb7= 26.Ke2 Nb4?? 27.Qe5+- Kf7 28.Bd4 Qc6 29.Qg7 Ke8 30.Qg8 Kd7 31.Qh7 Kc8 32.Qg8 Kb7 33.Qb3 Qc2 34.Qc2 Nc2 35.Bc5 a5 36.a3 Kc6 37.d4 Kd5 38.Kd3?? Ne1+/– 39.Kc3 Ng2 40.Bb6 g5 41.Ba5+- Ne3?? 42.a4 Nd1 43.Kc2 Nf2 44.Bb6 f4 45.Kd2 Ne4 46.Ke1 f3 47.a5+/– Kc4?? 48.a6+- Kd3 49.d5 (49.d5 f2 50.Bf2+-) 1–0. AbstractPoetic (1635) – Svenfromntbym, Sven, 2007.

6.Nf3 c5

7.Bc4 Qe7 8.Be2 +-.

7.bc6 bc6? 8.Bc4 (8.Nd4 Nh6 9.Bc4 Qe7 10.Kf1 Qe5+-) 8...Nh6? (better is 8...Qe7 9.Kf1 Nd7 10.Nd4 Ne5+-) 9.0-0 (9.Nd4?! Qe7 10.Kf1 Qe5+-; 9.Bd4?! Nf5 10.Qe2 Be7+-) 9...Qd6 (9...Bc5 10.Nd4 Kf8 11.Qh5+-) 10.Nd4 Qf4 (10...Be7+-) 11.g3 Qe4 (11...Qd6+-) 12.Re1 Bf5 (12...Qe1 13.Qe1 Kd8+-) 13.Nf5 Qe1 14.Qe1 Kd7 15.Nh6 gh6 16.Bf6 Rg8 17.Bg8 1–0. pierre – tafeh, internet, 2010.

7.bc6 Nc6 8.Bb5 Bd7 (8...Bg4 9.0-0+=) 9.0-0 a6 (9...Qb6!? 10.Qe2 Be7+=) 10.Re1+/– Be7 11.Bc6 bc6 12.Nd4 c5 13.Ne6 Be6 14.Re6 Nh6 (14...Qd7 15.Re3+-) 15.Qh5 Kf8 16.Na3 (better is 16.d3+-) 16...Qd7? (better is 16...Qd2 17.Rae1 Ng8+-) 17.Rae1 Re8 (17...Ng8 18.Nc4+-) 18.Nc4 (better is 18.Bf6 gf6 19.Qh6 Kf7 20.Nc4+-) 18...g6 (18...Nf7+-) 19.Qh6 Kf7 20.Qh4 (better is 20.Qh3 Qd5 21.Qb3+-) 20...Bd6 (20...Qe6 21.Re6 Ke6 22.Qe4 Kf7 23.Qd5 Kg7+-) 21.Qf6 Kg8 22.Nd6 Rf8 (22...Qe6 23.Qh8) 23.Qh8 1–0. GuestMNLQ – GuestDLZY, freechess.org, 2017.

7.bc6 Nc6!? 8.Bc4 Qe7 9.Qe2 Bg4 =.

4.e3 Qd6

5.a4 Qb4 6.Ba3 Qa4?? (better 6...Qa5=) 7.Bf8+- Qa1 8.Bg7 Ne7 (8...Bg4 9.Qc1+-) 9.Bh8 Nd7 10.c4 dc4? (better 10...Kf8 11.Bd3 e4+-) 11.Bc4 Qb2 (11...Ng6 12.Bg7+-) 12.Be6 (12.Nc3 Kd8+-) 12...Nb6 (12...Qb5 13.Qh5 Kd8 14.Nc3+- (14.Qh7?! Nf8 15.Qe4 Be6 16.Bf6 Qd5+=)) 13.Bc8 Nbc8 (13...Rc8 14.Bf6 Qb5 15.Be7 Ke7 16.Qc2+-) 14.Bf6 (14.Nc3 a6+-) 14...Nd6 (14...Nd5 15.Bh4 Nce7 16.Be7 Ke7 17.Nf3+-) 15.Be7 (15.Nc3 Ng6+-) 15...Ke7 16.Nf3 (16.Nc3 Nb5 17.Nb5 Qb5+-) 16...Nb5 17.0-0 Rg8 (17...e4 18.Ng5+-) 18.Qa4 a6 (18...Re8 19.Qh4 Kd7 20.Nc3 Nc3 21.dc3+-) 19.Qh4 Kd7 (19...Ke8+-) 20.Qh7 Kc6 21.Qg8 e4 22.Qe6 Nd6 23.Ne5 Kb6 24.Nc4 Ka7 25.Nb2 b6 26.Nc4 a5 27.Nd6 cd6 (27...Ka6 28.Qc8 Ka7 29.Qb7) 28.Qd6 (28.Qd7 Ka6 29.Na3 b5 30.Qb5 Ka7 31.Rb1 a4 32.Qa4) 28...Ka6 (28...a4 29.Qd7 Ka6 30.Na3 b5 31.Qb5 Ka7 32.Rb1 Ka8 33.Qa4) 29.Nc3 a4 (29...Kb7 30.Nd5 Ka8 31.Qc7 b5 32.Nb6) 30.Rb1 Ka5 (30...Ka7 31.Qb6 Ka8 32.Qb7) 31.Qb6 1–0. RichardSommer (2005) – sugarglider83 (1975), lichess.org, 2020.

5.c4 dc4 6.Bc4 Be6 7.Be6 Qe6= 8.Nf3 Bd6 9.Nc3 Ne7 10.0-0 0-0 11.Ne4 c6 (11...f5 12.Nfg5 Qc4 13.Nd6 cd6 14.a4=) 12.a4 (12.bc6 Nbc6 13.d4 Rfd8=) 12...cb5 13.ab5 b6 (13...Rd8 14.Qa4=) 14.Rc1 (14.d4 Rd8 15.de5 Bc7+- (15...fe5?? 16.Nfg5 Qd5 17.Nd6 Rd6 18.Qh5+-)) 14...Nd7 (14...Rd8 15.Qc2=) 15.d4+= Ng6?? (15...ed4 16.Nd6 Qd6 17.Nd4+= (worse 17.Qd4 Qd4 18.Nd4 Nc5=)) 16.de5?? (better 16.Rc6 Qa2 17.Rd6 (worse 17.Nd6 Qb2 18.Qa4 a5+-) 17...Qb2 18.Rd7 Qb5 19.de5 Ne5 20.Ne5 Qe5 21.Qb3 Kh8 22.Nd6+-) 16...Be5+= 17.Be5 Nde5 18.Ne5 (18.Nd4 Qd5 19.Nc3 Qc4+=) 18...Qe5 (18...Ne5 19.Qa4+=) 19.Nd6 White gets kings attack 19...Rad8? (better 19...Qe6 20.Qd4 Rfd8+=) 20.Qb3+- Kh8 21.Nf7 Rf7 22.Qf7 Nh4 (22...Qb5 23.Qa7 Nf8 24.Rb1+-) 23.Rc7 (23.Rfd1 Rd1 24.Rd1 h6+-) 23...Rg8 (23...Qg5 24.g3+-) 24.Ra7 (24.Rd1 h6 25.Qc4 Qg5+-) 24...Qg5 Do you see the mate threat? 25.Qb7 Qb5 26.Rc1 Qg5 27.Rc8 (27.Rb1 h6+-) 27...h6 28.Rg8 Kg8 29.Qe4 Threatening mate: Ra8 29...f5 30.Ra8 Kh7 31.Qd5 Qf6 (31...Qg4 32.h3 Qe2 33.Qg8 Kg6 34.Ra1+-) 32.f4 (better 32.g3 h5 33.gh4 Qg6 34.Kf1+-) 32...g5?? (better 32...Qc3 33.Kf2 Qb2 34.Kg3 Qe2+-) 33.Ra7 (33.Qg8) 33...Kg6+- 34.fg5 (34.e4 b5 35.Kf1 gf4+-) 34...Qg5?? (34...Kg5 35.g3 Ng6 36.h4 Kg4 37.Ra4 f4+-) 35.Qf7 1–0. aravind555 – Matador64, lichess.org, 2018.

5.c4 c6 6.cd5 cd5 7.Qh5 g6 8.Qd1 Bg7 9.Qc2 Ne7 10.Nf3 0-0 11.Be2 Be6 12.0-0 Nd7?? (12...Rc8 13.Nc3=) 13.d4?? (better is 13.Ba3 Rfc8 14.Bd6 Rc2 15.Be7+-) 13...Rac8 14.Qa4 Nb6 15.Qd1 (15.Qa3 Qa3 16.Ba3 Rfe8=) 15...Nc4 16.Bc4 Rc4 17.de5 fe5 18.a4 Rfc8 19.Ba3 Qd7 20.Nbd2 Ra4?? (better is 20...Rc2+=) 21.Qa4+- e4 22.Nd4 Nf5 1–0. GuestDNWV – GuestWVNP, freechess.org, 2017.

5.c4 d4 6.ed4 ed4 7.Bd3 Qe5 8.Qe2 Bg4 9.Qe5 (9.f3!? Be6 10.f4 Qe2 11.Ne2+=) 9...fe5= 10.f3 Bh5 11.Ne2 Bg6 (11...Nf6!?=) 12.Bg6+= hg6 13.Ng3 Nf6 14.0-0 Bb4 (14...Nbd7 15.Re1 Be7 16.a4=) 15.d3 (better is 15.Re1!? Kf7 16.Re5+/–) 15...a6 16.Ne4 Ne4 17.fe4 ab5 18.a3 Bd6 19.cb5 Ra4 (better is 19...Nd7!?+=) 20.Nd2+= Nd7 21.Nc4 Nc5 22.Rfd1 Nb3 23.Ra2 Na5 24.Nd6 cd6 25.Bc1 Kd7 26.Bd2 b6 27.Bb4 Nb3 28.Rf2 Ke6 29.Rdf1 Nc5 30.Bc5 bc5 31.Ra1 Rha8 32.Rb2 Rb4 (32...d5!? 33.ed5 Kd5=) 33.Rb4 cb4 34.a4 Kd7 35.Kf2 Kc7 36.Ke2 (36.a5!? b3 37.b6 Kb7 38.Kf3+=) 36...Kb6= 37.Kd2 Rf8 38.Ke2 (38.a5 Kb5 39.a6 Ra8=) 38...g5 39.Rc1 (better is 39.Ra2=) 39...Rd8?? (39...Ka5 40.Rc6 b3 41.Ra6 Kb4 42.b6–+) 40.Rb1?? (better is 40.Rc6 Kb7 41.Rc4+-) 40...Ka5–/+ 41.Ra1 Rc8 42.Kd2 b3 43.Ra3 Rc2 44.Kd1 Rg2 45.Rb3 Kb6?? 46.a5!+/– Kb7 47.b6 Ra2+= (47...Ra2 48.Rb5 g4+= (worse is 48...Rh2 49.a6 Kb8 50.Rd5+-); worse is 47...Rh2 48.a6 Kb8 49.b7+/–). PruneFace – RUaKnighted, Live Game Caissa's Web, 2005.

5.c4 Bd7 6.cd5 Qd5 7.Nc3 Qe6 8.Be2 (8.d4+=) 8...h5 (better 8...a6!?=) 9.Bf3 c6 10.bc6 (10.Bh5 Kd8+-) 10...Nc6 11.Bh5 Kd8 12.Bf3 Nb4 13.Qb1 Qf5 (13...Nc6!?+=) 14.Be4+- (worse 14.Bb7 Qb1 15.Rb1 Rb8+=) 14...Qe6 15.Nge2 f5 16.Bb7 (16.Ba3!? a5 17.Bb7+-) 16...Rb8+= 17.a3 Rb7 18.ab4 Rb4 (better 18...Bb4!? 19.Qc2 Bc6+=) 19.Ra7+- Rb8 20.Qa2 Qc6 (20...Qa2!? 21.Ra2 Rh6+-) 21.Qa5+- Ke8?? (21...Qb6 22.Qb6 Rb6 23.Ra8 Bc8+-) 22.Qe5 Be7 (22...Kf7 23.Qb8 Nf6 24.f3+-) 23.Qb8 Bd8 (23...Kf7 24.Nf4 g5 25.Nd3 Qg2 26.Rf1 Qh2 27.Ne5 (27.Rd7 Qb8 28.Nd5 f4+-) 27...Kg7 28.Rd7+-) 24.Ra8 Qg2 25.Qd8 Kf7 26.Qd7 (26.Qf8 Kg6 27.Nf4 Kh6 28.Ng2 Bc8 29.Ne4 Rh7 30.Ra6 Nf6 31.Rf6 Kh5 32.Qe8 Kg4 33.Rg6 Kh3 34.Rg3) 26...Ne7 27.Rg1 Qh2 28.Rh8 (28.Rg7 Kg7 29.Nd5 Qe5 30.Be5 Kg6 31.Ne7 Kf7 32.Nd5 Kg6 33.Qg7 Kh5 34.Rh8) 28...Qh8 29.Nd5 Qh4 (29...Qe8 30.Rg7 Kf8 31.Qe6 f4 32.Qf6 Qf7 33.Qf7) 30.Rg7 (30.Rg7 Kf8 31.Qd8) 1–0. aravind555 – vsuponev, lichess.org, 2019.

5.d4 Ne7=.

5.Nf3 a6 6.c4 Ne7 7.Nc3 Be6 8.Qa4 c6 9.Ba3 Qd7 10.b6 g6 (10...Kf7 11.Be2+=) 11.d4 e4 12.Nd2 Qd8 13.Qb3 Nd7 14.Na4 1–0. Silent Move (2115) – MichielDielman, redhotpawn.com, 2015.

5.Nf3 Be6 6.c4 Ne7 7.Ba3=.

5.Nf3 Ne7 6.Be2=.

5.Nf3 Bf5 6.Be2 (6.Ba3 c5=) 6...Qc5 (6...Nd7 7.Ba3 Qe6 8.Bf8 Nf8 9.d4=) 7.Bc3 (7.d4 ed4 8.Nd4 Be4+/–) 7...Be7 (7...Bd6!?=) 8.d4+= ed4 9.Nd4 Be4 (9...Bd7 10.Bd3+=) 10.f3= Bg6 11.Ne6 Qb6 12.Nf4 (better is 12.Qd5 Bc2 13.Nd2+/–) 12...Qe3?? (better is 12...c6 13.bc6 bc6 14.Ng6 hg6+=) 13.Nd5+- (13.Ng6?! hg6 14.Qd5 Bc5=) 13...Qc5 14.Bb4 (14.Ne7?! Ne7 15.a4 Nd5=+) 14...Bc2 (14...Qb4 15.Nb4 Bb4 16.c3+-) 15.Bc5 Bd1 16.Nc7 (16.Kd1?! Bc5 17.Nc7 Kd7 18.Na8 Bd4+-) 16...Kf8 (16...Kd7 17.Na8 Be2 18.Ba7 Bb5+-) 17.Be7 Ne7 18.Bd1 (18…Nbc6 19.Na8+-; 18.Kd1 Nd5 19.Na8 Ne3 20.Kd2 Ng2+-) 1–0. Wall,Bill – Dizzy, Internet, 2003.

5.Qh5 g6 6.Qh4 Bg7 7.Nf3 Ne7 8.Be2 Nf5 9.Qa4 Bd7 10.c4 c6 11.Nc3 0-0 12.Ba3 c5 13.Nd5 Kh8? 14.0-0 a6 15.Rfd1 Be8? 16.d4+- ed4 17.ed4 b6 18.dc5 bc5 19.Rac1 Nd7 20.Nd4?? Nd4+= 21.Rd4 Ne5? 22.Rcd1 f5 23.Nf4 Qb6 24.Rd6 Qb7 25.Ne6?? ab5+= 26.Qb3 b4? 27.Bb2 Rg8?? 28.Ng7+- Qg7 29.Qe3 Nf3 30.Bf3 Qb2 31.Bd5 Ra3? 32.Qe7 Qg7 33.Re1?? Qe7= 34.Re7 Rf8?? 35.Rd8 Ra2 36.h3 b3 37.Ree8 Re8 38.Re8 Kg7 39.Rb8 b2 40.Kh2 Kf6 41.Bf3 Ke5= 42.Bd1 Kd4–/+ 43.Bb3?? Ra3 44.Bd1–/+ Ra2 45.Bb3 Ra3 (45...Ra3 46.Bd1 Kc3–/+) 0–1. elsh1403 – lakyluciano (1645), internet, 2011.

4.e3 Bd6

5.a4 a6 6.d4 ab5 7.ab5 Ne7?? (better is 7...Ra1 8.Ba1 e4=) 8.Ra8+- Nd7 9.Qh5 g6 10.Qh6 (better is 10.Qd1 Nb6 11.Ra7 0-0+-) 10...Nf5 11.Qh3 Nb6 12.Rc8! Qc8 (12...Nc8 13.g4 Combination; 12...Qc8 13.de5 Combination) 13.e4! de4 14.de5 Be5 15.Be5 fe5 16.Nc3 (16.Nd2 Qa8 17.Qc3 Nd4 18.Ne4 Nd5+-) 16...Nd4 17.Qc8 Nc8 18.Ne4 Nc2 19.Kd2 Nd4 20.Bc4 Nb6 21.Bd3 Nd5 22.Ne2 Rf8 (22...Ne2 23.Be2 Ke7 24.Nc5+-) 23.Nd4 ed4 24.Bc4 Nb6 (24...c6 25.bc6 bc6 26.Kd3+-) 25.Kd3 c5 (25...Ke7 26.Re1+-) 26.bc6! bc6 27.Kd4 Kd7 28.Rd1 (28.Ra1 Nc4 29.Ra7 Ke6 30.Kc4 h6+-) 28...Kc7 29.Bd3 Nd5 30.g3 Nb4 31.Kc5 Nd5 (31...Nd3 32.Rd3 Rf5 33.Kc4+-) 32.Bc4 (32.Ra1 Rf5+-) 32...Ne7 (32...Nb6 33.Be6+-) 33.Be6 h6 (33...Rd8 34.Ra1 Kb8+-) 34.Rd7 1–0. Baer,Cy (1895) – Fares,Rodolpho JR, CiF, 2007.

5.Be2 Nd7 6.Nc3 Ne7 7.e4 =+.

5.Be2 Be6 6.Ba3 (6.Nf3 e4 7.Nd4 Qe7=) 6...Ba3 7.Na3 Qd6 8.Nb1 c6 (8...Nd7 9.Nf3=+) 9.a4 (9.Nf3 Ne7=) 9...Ne7 10.Nf3 0-0 11.0-0 f5 (11...c5 12.a5=+) 12.d4= e4 13.Ne5 Nd7 14.f4 ef3 (14...c5 15.a5=) 15.Nf3 f4 16.ef4 (16.Ra3 Rae8=) 16...Rf4 17.Ng5 (17.bc6 Nc6 18.a5 Raf8=+) 17...Raf8=+ 18.Ra3 (18.Rf4 Rf4 19.Qd2 Bf5=+) 18...Rf1 19.Bf1 Qf4 20.Ne6?? (better is 20.Nf3–/+) 20…Qf2 0–1. Jereb,Juergen – Sekyra,Michael, Vienna op–F, 1996.

5.Be2 Ne7 6.c4 b6 (6...Be6!?+= A) 7.Qc2 Nd7 (7...c5 8.cd5 Nd5 9.Nc3 Nb4 10.Qe4 Nd7 11.Kf1 Rb8 12.a3 f5=; 7...Bf5 8.Qb3 Nd7 9.d4 ed4 10.ed4 dc4 11.Bc4 Nb6 12.Bf7 Kf8=; 7...c6 8.c5 Bf5 9.Qc3 Bc7 10.Nf3 0-0 11.0-0 cb5 12.Bb5 Nbc6+=) 8.Nf3 c6 9.cd5 cd5 10.Nc3 Rc8 11.0-0 Nf5 12.d4 e4+=; B) 7.Bh5 g6 (7...Kf8 8.Qc2 Nd7 9.d3 a6 10.ba6 Ra6 11.Ne2 dc4 12.dc4 Bb4+=) 8.Bf3 e4 9.Bg4 Bg4 10.Qg4 Nd7 11.cd5 f5 12.Qh4 Ne5–/+; C) 7.Bg4 Qc8 (7...Qd7 8.Be6 Qe6 9.Qh5 Kd8 10.d4 dc4 11.de5 Be5 12.Be5 fe5+=; 7...Bf7 8.cd5 Bd5 9.Bf3 e4 10.Bh5 g6 11.Nc3 Be5 12.Be2 Qd6=; 7...Bg8 8.Bh5 g6 9.Bf3 c6 10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 a6=) 8.Bh5 g6 9.cd5 Nd5 10.Be2 Qd7 11.d4 ed4 12.Bd4 a6+=; D) 7.Nf3 Qd7 (7...c5 8.cd5 Nd5 9.Nc3 Nd7 10.Nd5 Bd5 11.Qc2 e4 12.Nh4 Ne5+=; 7...c6 8.cd5 Bd5 9.Nc3 e4 10.Nd4 Be5 11.d3 Bd4 12.ed4 ed3=; 7...dc4 8.Qc2 a6 9.Bc4 Bc4 10.Qc4 ab5 11.Qb5 Nd7 12.d4 c6=) 8.cd5 Nd5 9.0-0 a6 10.d4 e4 11.Nfd2 f5 12.ba6 Na6+=) 7.cd5+= (7.Nc3 dc4 (7...c6 8.cd5 Nd5 9.Bh5 Ke7 10.Bf3 Nc3 11.Bc3 Bb7 12.d4 a6=; 7...Bb7 8.Bf3 a6 9.ba6 Na6 10.Nd5 Nd5 11.cd5 0-0 12.Qc2 f5=) 8.Bc4 a6 9.Qh5 Ng6 10.Nf3 Qd7 11.Bd5 Ra7 12.Nh4 Qg4=; 7.d4 ed4 (7...c6 8.de5 Be5 9.Be5 fe5 10.cd5 Qd5 11.Nc3 Qf7 12.Bh5 g6+=; 7...a6 8.cd5 Nd5 9.de5 Be5 10.Be5 fe5 11.Bf3 Bb7 12.Be4 0-0=) 8.Bd4 c6 9.Nf3 a6 10.bc6 Nbc6 11.0-0 Nd4 12.Qd4 dc4=) 7...Nd5 8.Bf3 Bb7? (better is 8...Be6!?= 9.Nc3 Bb4 10.Qa4 Qd6 11.Nd5 Bd5 12.Bd5 Qd5+-) 9.Qb3+/– Be7? (9...Bb4 10.Nc3 Bc3 11.dc3 e4 12.Be4 Nd7 13.Bd5 Nc5 14.Bb7 Nb3 15.ab3 Rb8 16.Bc6 Kf7+-) 10.Nc3+- Nb4 11.Bb7 Nd3 12.Ke2 Nc5 13.Qd5 (13.Ba8?! Qd3 14.Ke1 Nb3 15.ab3 Qc2+-) 13...Qd5 (13...Nb7 14.Qb7 Nd7+-) 14.Bd5 Nbd7 (14...c6 15.bc6 Nca6+-) 15.Ba8 0-0 (15...a6 16.a4+-) 16.Bd5 Kh8 17.Bc6 (better is 17.d4 ed4 18.ed4 Bd6 19.dc5 Nc5+-) 17...Rd8 18.Nd5 Bd6 19.a4 (19.d4!? Na4 20.Bc1 ed4 21.ed4 Ne5+-) 19...Nb3 20.Ra2 Ndc5 21.f3 e4 (21...Na5 22.Nh3+-) 22.fe4 Ne4 23.Nf3 Ra8 (23...Na5 24.d3 Nc6 25.bc6 Nc5 26.Nf6 Ne6+-) 24.Ba8 Nbc5 25.d3 Ng5 26.Ng5 fg5 27.a5 ba5 28.Ra5 Nb3 29.Ra7 1–0. Szakats,S (1855) – Somogyi,Akos, FSFMB October, 2010.

5.Ne2 Be6 6.Ng3 c6 7.a4 Nd7 8.c4 Ne7 9.Nc3 (9.bc6 bc6 10.Ba3 Ba3 11.Na3 0-0=+) 9...0-0 (9...dc4 10.Nge4 Bc7 11.Ba3–/+) 10.cd5 cd5 11.Be2 Rc8 12.0-0 Qc7 13.Qb3 Bf7 (13...f5 14.a5=+) 14.Ba3 (14.d4 Nb6=) 14...d4 15.Bd6 Qd6 (15...Bb3!? 16.Bc7 Rc7=+ (worse 16...dc3 17.Bd6+-)) 16.Nce4= Qe6 17.Qe6 Be6 18.ed4 ed4 19.Bf3 (19.Nd6!? Rc5 20.Rae1+=) 19...Ne5= 20.Bd1 Nd5 (20...Rc7 21.f4 Nd3 22.Rf3=) 21.Nd6= Rc7 22.f4 Nc4 (22...Nf7 23.f5 Nd6 24.fe6+=) 23.Nc4 Rc4 24.Bf3 (24.Bb3!? Rc5 25.Rae1+-) 24...Re8 (24...Nf4 25.Bb7 Nd3 26.Be4=) 25.f5 Bf7 26.d3 (26.Ne4 Rd8=) 26...Rc3 27.Be4 Rec8 (better 27...Ne3!? 28.Rfc1 b6=) 28.Ne2+- R3c7 29.Nd4 Ne3 (better 29...Nc3+-) 30.Rfd1?? (better 30.Rfe1 Nd5 31.Ne6 Be6 32.fe6+-) 30...Nd1=+ 31.Rd1 Rc1 (31...Re7 32.Kf2=+) 32.Rc1= Rc1 33.Kf2 Rc7 34.a5 b6 35.a6 Rd7 (35...Rc5 36.g4=) 36.Nf3 (36.Ke3 Kf8+=) 36...Bd5= 37.Nd2?? (better 37.Ke3=) 37...Be4–+ 38.Ne4 Rd3 39.g4 (39.Ke2 Rd5 40.Nc3 Re5 41.Kd3 Rf5–+) 39...Rd4 (39...Rd5 40.Nc3 Rc5 41.Ne2 Rb5 42.h4–+) 40.Nc3? (better 40.Ke3 Rd1 41.Nc3–+) 40...Rg4 41.Kf3 (41.Ke3 Rh4–+) 41...Rg5 42.h4 (42.Ke4 g6 43.Kd5 Rf5 44.Kd6–+) 42...Rf5 43.Ke4 Rh5 (43...Rc5 44.Kd4–+) 44.Kd4 Rh4 45.Kd5 f5 46.Kc6 f4 (better 46...Rc4 47.Kb7 Rc3 48.Ka7–+) 47.Nd1 f3 48.Kb7 Rb4 (better 48...Rd4 49.Nf2 Rd7 50.Kc6–+) 49.Ka7 Rb5 50.Kb7 Ra5 51.a7 (51.Kb6 Ra1 52.a7 g5–+) 51...Ra1 (51...b5 52.Kb6 Ra7 53.Kb5–+) 52.Ne3 (52.Kb6 Kf7–+) 52...f2 (52...b5 53.a8Q Ra8 54.Ka8 f2–+) 53.a8Q (53.Kb6 g5 54.Kb7–+) 53...Ra8 54.Ka8 b5 55.Kb7 b4 56.Kb6 b3 57.Kb5 b2 (57...b2 58.Kc4 b1Q–+) 0–1. aravind555 – Nirgold, lichess.org, 2019.

5.a4 Ne7

6.Na3 0-0 7.c4 Bf5 8.cd5 Nd5 9.Qb3 c6 10.Bc4 Bc7 11.Ne2 Kh8= 12.0-0 Nb6 13.d3 N8d7 14.e4 Bg4 15.f3 Bh5 16.Ng3 Be8 17.a5 Nc5 18.Qc3 Nc4 19.Nc4? Qd3 20.Qd3 Nd3 21.Bc3? cb5–+ 22.Ne3 b4 23.Bd2 Bb5 24.Rfb1 Bd6 25.Nd5 Bc5 26.Be3 Be3 27.Ne3 Rac8 28.Ngf5 Rfd8 29.Ne7 Rc3 30.N7d5 Rc5 31.Nb4 Nb4 32.Rb4 a6 33.Rb2 Rd3 34.Nd5 Bc6 35.Nb4 Rdc3 36.Nc6 Rc6 37.Rb7 h6 38.Kf2 Rc2 39.Kg3 Rd2 40.Rg1 Ra2 41.Rb6 Rb6 42.ab6 Rb2 43.Ra1 Rb6 44.h4 Kg8 45.Kg4 g6 46.h5 gh5 47.Kh5 Kf7 48.g4 Ke6 49.Kh6= Rc6 50.Ra3 Kf7 51.g5 f5 52.Kh5 fe4 53.fe4 Rg6 54.Rc3 Re6 55.Rc7 Kg8 56.g6 1–0. poganinbezdom – fischerhono (1740), internet, 2011.

6.Na3 Ng6 7.Nf3 0-0 8.c4 c6 9.cd5 cd5 10.Be2 Qe7 11.0-0 Be6 12.Nc2 b6 13.d4 e4 14.Nd2 f5 15.f4 Nd7 16.Ba3 Rac8 17.Bd6 Qd6 18.Ra2 Rc3 19.Qb1 Rfc8 20.Nb4? Nb8?? 21.Rc2 Rc2?? 22.Nc2= a5 23.h3 Nd7 24.g4 Nh4 25.Kh2 Nf3 26.Nf3 ef3 27.Bf3 fg4 28.hg4 Nf6 29.Kh3 h5 30.Rg1?? hg4–+ 31.Bg4 Ng4 32.Rg4 Bg4 33.Kg4 Qg6 34.Kf3 Qc2 35.Qg1 Qe4 36.Kf2 Rc2 37.Kg3 Re2 38.Kh4–+ Rg2 39.Qg2 Qg2 40.f5 Kf7 41.Kh5 Kf6 42.Kh4 Qe4 43.Kg3 Qe3 44.Kg4 Qe4 45.Kg3 Kf5 (45...Kf5 46.Kh3 Kf4 47.Kh2 Qe2 48.Kh3 g6 49.Kh4 Qg4) 0–1. poganinbezdom (1650) – kalipe, internet, 2011.

6.c4 c6 7.Nf3 0-0 8.Be2 Be6 9.d4 e4 10.Nfd2 f5 11.Nc3 Nd7 (11...f4 12.bc6 Nbc6 13.ef4 Nd4 14.cd5 Nd5 15.Nd5 Ne2 16.Nf6 gf6 17.Qe2=+) 12.Qb3 Qe8 13.g3 (13.0-0 Qg6 14.Ba3 f4 15.Bd6 Bh3+-) 13...Qf7 14.a5 a6 15.c5 White plans b6 15...Bc7 16.b6 Bb8 17.0-0-0 g5 Black prepares f4 18.Qc2 f4 (better 18...Ng6!?+=) 19.gf4+- gf4 20.Rdg1 Kh8 (20...Ng6 21.h4 f3+=) 21.Nd1?? (better 21.Nce4 h6 22.Nc3+-) 21...f3= 22.Bf1 Rg8 23.Kb1 Nf6 24.Nc3 Rg1 25.Rg1 Bh2 26.Rh1 Qh5 27.Ka1 Rg8 28.Nce4 Ne4 29.Ne4 de4?? (29...Bf5 30.Bd3 A) 30...Be4?! 31.Be4 Rg2 32.Bd3=; B) 30...de4 31.d5 Rg7 B1) 32.Bg7?! Kg7 33.Qb2 Kf8 34.Ba6 Qg5+= (34...ba6 35.d6 Qe8 36.Qf6 Kg8 37.de7+-; 34...Nd5? 35.Bb7 Bg6 36.a6 Nb6 37.cb6 Qa5 38.Kb1+-; 34...cd5? 35.Bb7 Qg5 36.a6+-); B2) 32.Be4 cd5 33.Bf5 Qf5 34.Qf5 Nf5 35.Rh2+-; C) 30...Qg6–/+) 30.d5+- Rg7 31.de6 (31.Bg7 Kg7 32.Qb2 Kg6 33.de6 h6+-) 31...Qc5 (31...Kg8 32.Qc4 Nd5 33.Qe4 Qg4+-) 32.Qc5 (32.Qc5 Ng6 33.e7 h6 34.Qd4 Ne5 35.Qe5 Be5 36.Rh6 Rh7 37.e8Q Kg7 38.Rg6) 1–0. BeepBeepImAJeep (2545) – Wilsonpalencia (2095), Titled Arena Jan '19, 2019.

6.d4 0-0 7.Nc3 (7.c4 ed4 8.Bd4 c5+=) 7...Be6 (7...Bb4 8.de5 fe5 9.Nf3–/+) 8.de5+= fe5 9.Nf3 e4 10.Nd4 Qd7 11.Ne6 Qe6 12.Be2 c6 13.Bg4 Nf5 14.bc6 bc6 15.Qd2 Qg6 16.Qe2 (16.f3 ef3 17.Bf3 Nd7–/+) 16...Nd7 17.0-0 Ne5 18.Bh5 Qe6 (18...Qg5 19.h3–+) 19.Ba3–/+ Ba3 (19...Qf6 20.Bd6 Nd6 21.Qd1–/+) 20.Ra3 g6 (20...Nh4 21.Kh1–/+) 21.Bg4+= Nc4 (21...Ng4 22.Qg4 Rab8 23.a5–/+) 22.Rb3 Qe5 23.Na2 ½–½. Kellerer,Horst – Hasler,Ulrich, CiF, 1989.

6.Be2 0-0 7.c4 c6 8.cd5 cd5 9.Nf3 Be6 10.0-0 Nd7 11.d3 Nc5 12.d4= Ne4 13.Nbd2 Rc8 14.de5+= fe5 15.Ne5 Be5 16.Be5+/– Ng6 17.Bb2 Bf5 18.Nf3 Re8 19.Qb3 Be6 20.Nd4 Bf7 21.Bg4 Rc7 22.Bh5?? Nd2= 23.Qa2 Nf1=+ 24.Rf1 Qe7 25.Bg6 hg6 26.Nf3 Rec8 27.Nd4 Rc4 28.h3 Qg5 29.Qb1 Ra4=+ 30.Qd3 Ra2?? 31.Ba1?? a6 32.Nf3 Qe7 33.Qd4 Be6–/+ 34.Ne5 Rc7 35.Ng6 Qf7 36.Nf4 ab5=+ 37.Ne6 Qe6–/+ 38.Kh2 Qd6 39.g3 Qf8?? 40.Rd1?? Qf2 41.Kh1 Qg2# 0–1. ATUK – Serial, Live Game Caissa's Web, 2005.

6.Nf3 0-0 7.Be2 c6 8.c4 cb5 9.ab5 dc4 10.Bc4 Kh8 11.d4 e4 12.Nfd2 Nd7 13.Ne4+/– Nb6 14.Qb3 Nc4 15.Qc4 b6 16.Nd6 Qd6 17.0-0 Bb7 18.Nd2 Rac8 19.Qe2 Qd5 20.e4 Qg5 21.f3 Ng6 22.Bc1?? Nf4–+ 23.Qf2 Nd3 24.Qg3?? Qg3?? 25.hg3+/– Nc1 26.Rac1 Kg8 27.d5 Kf7 28.Nc4 Ke7 29.Ne3 Kd6 30.Nf5 Kd7 31.Ng7 Rf7 32.Nh5 f5 33.Nf4 fe4 34.fe4 Rg7 35.Kf2 Rcg8 36.Rc3 a6 37.ba6 Ba6 38.Rfc1 b5 39.Rc7 Kd6 40.R7c6 Ke5 41.Ra6 Rg3 42.Nh3 Rg2 43.Kf1 R2g3 (43...R2g3 44.Re6 Kd4 45.Rd1 Ke3 46.Re1 Kd4+-) 1–0. j1a9n55 – u127, internet, 2011.

5.Nc3 Be6

6.d4 e4 7.Nge2 f5 8.Nf4 Bf4 9.ef4 Nf6 10.Be2 0-0 11.Ba3 Rf7 12.Rb1 Nbd7 13.Na4 Nb6 14.Nc5 Bc8 15.0-0 Nc4 16.Bc4 dc4 17.d5 b6 18.Ne6–/+ Be6?? 19.de6+- Qd1 20.ef7 (20.ef7 Kf7 21.Rfd1+-; 20.Rbd1?! Rff8 21.Bf8 Kf8+-) 1–0. Fritz 11 – amateur, 2011.

6.d4 Ne7 7.Nh3 0-0 8.de5 Be5 9.Bd3 Qd6 10.Qh5 g6 11.Qh4 Nf5 12.Bf5 Bf5 13.Qa4 Qc5 14.Qb3 Bh3 15.gh3 Rf7 16.Na4 Qe7 17.0-0-0 c6–/+ 18.bc6 bc6 19.Ba3 Bd6 20.Bd6=+ Qd6 21.c4 dc4 22.Rd6= cb3 23.ab3 a5 24.Nc5 g5 25.Rhd1 Kg7 26.Kd2 Re7+= 27.Ke2 Re5 28.Ne6 Kg6 29.f4+- gf4 30.Rg1 Kh6 31.Nf4 Rf5 32.Rg8 a4 33.ba4 c5 34.Rdd8 Ra4 35.Rb8 Ra2 36.Kf3 c4 37.Rb6 Ra1 38.Rc8 Rc1 39.Rbc6 Rf1 40.Kg4 Rg5 41.Kh4 Rf5 42.Rc4 Re1 43.Kg4 Rg5 44.Kf3 Rf1 45.Ke4 Rh1 46.R8c6 Re5 47.Kf3 Rh2 48.Rf6 (48.Rf6 Kg7 49.Rb6+-) 1–0. Prestige – Constellation3 6, 1983.

5.c4 dc4

6.Bc4 b6 7.Qh5+/- g6 8.Qf3 Bb7?? (better 8...c6 9.bc6 Ne7 10.Qf6 Rf8+/-) 1-0. DEFFM – GuestTYVM, freechess.org, 2020.

6.Bc4 Qe7 7.Qb3 Nh6 8.Nf3 a6 9.a4 (9.Nc3 ab5 10.Nb5 Nc6=) 9...ab5=+ 10.ab5 Ra1 11.Ba1 c6 (11...e4 12.Nd4=) 12.Nc3 Bg4 13.0-0 Bh5 (13...e4 14.Nd4=) 14.d3 (14.bc6 Bf3 15.gf3 Nc6+/-) 14...Bf7 (14...Bf3 15.gf3 f5 16.Rb1=) 15.bc6 Nc6 16.Bf7 (16.Rb1 0-0+=) 16...Nf7 (16...Qf7 17.Qb6+=) 17.d4 (17.Rb1 Nfd8+/-) 17...0-0+= 18.Nd5 Qd8 (18...Qe6!?+=) 19.Qb7+/- Ne7 (better 19...Qa8!? 20.Qa8 Ra8+/-) 20.Ne7+- Be7 21.de5 h6 (21...fe5 22.Be5 Re8 23.Bd4+-) 22.ef6 (22.Nd4!? Ne5 23.Ne6 Qd7 24.Qd7 Nd7 25.Nf8 Kf8+-) 22...Bf6 23.Bf6 Qf6 24.Qe4 Nd6 25.Qd4 Kh8 (25...Qe6 26.Qe5 Qe5 27.Ne5+-) 26.Qf6 Rf6 27.Nd4 Ne4 (27...Kh7 28.Rc1+-) 28.g3 (28.f3 Ng5+-) 28...Rb6 29.Kg2 (29.f3 Nc5+-) 29...Nd2 (29...Rb2 30.g4+-) 30.Re1 Rb2 (30...g6 31.Re2 Nc4 32.e4+-) 31.Re2 Kh7 (31...Kg8 32.f4+-) 32.Nf3 Nc4 33.Rb2 Nb2 34.Nd4 (34.Ne5 Kg8+-) 34...Nd3 35.f3 Ne5 36.e4 Nd7 (36...g6 37.f4 Nc4 38.e5+-) 37.Nf5 Kg6 38.Ne7 (38.f4 h5+-) 38...Kf7 39.Nd5 Ne5 40.Kf2 Nd3 41.Ke3 Nc5 42.f4 Ne6 (42...Ke6 43.h3+-) 43.Nc3 (43.f5 Nd8+-) 43...Nd8 (43...Nc5 44.e5+-) 44.f5 (44.e5 h5+-) 44...Kf6 (44...Nc6 45.Nd5+-) 45.Kf4 Kf7 46.Nd5 Nc6 47.e5 Nd8 48.Ne3 Nc6 49.Nc4 Nd8 50.Nd6 Kf8 51.g4 Nc6 52.h4 White plans g5 52...Ne7 (52...Ke7 53.g5 hg5 54.hg5+-) 53.g5 hg5 54.hg5 Nd5 (54...g6 55.f6 Nd5 56.Ke4+-) 55.Ke4 Ne7 (55...Nc3 56.Kd4 Ne2 57.Ke3+-) 56.g6 Nc6 (56...Kg8 57.Ne8 Kf8 58.Nc7+-) 57.Kd5 (57.f6 Ne7 58.fe7 Ke7 59.Nf5 Ke6 60.Ng7 Ke7 61.Nf5 Kd8 62.g7 Kc8 63.g8Q Kb7 64.Nd6 Kb6 65.Qb8 Kc6 66.Qb7 Kc5 67.Qb5) 57...Ne7 58.Ke6 Nc6 59.Nc8 (better 59.f6 Nd4 60.Kd5+-) 59...Nd4 60.Kd5 White prepares e6 60...Nf3?? (better 60...Nf5 61.e6 Ne3 62.Ke4 Ng4+-) 61.Nd6 (better 61.e6 Ng5+-) 61...Ng5 (61...Nh4 62.e6 Ng2+-) 62.e6 Nh3 63.Ne4 Nf4 64.Ke5 (64.Kd6 Ne6 65.fe6 Ke8 66.Nf6 Kd8 67.e7 Kc8 68.Kc6 Kb8 69.Kb6 Kc8 70.e8Q) 64...Nh3 (64...Nh5 65.Nc5 Ke7+-) 65.Ng5 Nf2?? (65...Ng5 66.f6 Combination) 66.Nh7 (66.Kd6 Nd3 67.e7 Ke8 68.Ne6 Nf4 69.Ng7) 66...Ke7+- 67.Ng5 (better 67.f6 gf6 68.Nf6+-) 67...Ng4?? (67...Kf8 68.Kd6 Nd3 69.e7 Ke8 70.Ne6 Nf4 71.Ng7) 68.Kf4+- Nf6 69.Kg3 (69.Ne4 Ng8+-) 69...Nd5 (69...Kd6 70.Nf7 Ke7+-) 70.Nf3 (better 70.Ne4!? Kf8+-) 70...Nf6?? (better 70...Kf6=) 71.Ne5+- Ne4 (71...Nd5 72.Nd7+-) 72.Kf4 Nf6 73.Ng4 Nd5 74.Kg5 Nf6 (74...Nc7 75.Nf6! Kf8+-) 75.Nf6 gf6 76.Kh6 Kd6 77.Kh7 Ke5 78.g7 Kf5 (78...Ke4 79.e7 Kd4 80.g8Q Kc3 81.e8Q Kd4 82.Qd8 Kc3 83.Qa2 Kb4 84.Qda5) 79.e7 Ke5 80.e8Q Kf4 (80...Kd5 81.g8Q Kd4 82.Qd8 Kc3 83.Qa2 f5 84.Qdd2) 81.g8Q f5 (81...Kf3 82.Qg1 Kf4 83.Qee3 Kf5 84.Qg6) 82.Qgf7 (82.Qg1 Kf3 83.Qee3) 82...Kf3 (82...Kg4 83.Qh5 Kf4 84.Qh2 Kf3 85.Qee2) 83.Qef8 (83.Qf5 Kg3 84.Qe3 Kh4 85.Qfg5) 83...f4 (83...Ke2 84.Q8e7 Kf3 85.Qf5 Kg2 86.Qe2 Kg3 87.Qef2) 84.Qf5 (84.Qf4 Ke2 85.Q8d6 Ke1 86.Qdd2) 84...Kg3 (84...Ke2 85.Qe4 Kf2 86.Qff4 Kg1 87.Qg5 Kf2 88.Qgg2) 85.Qf4 Kg2 (85...Kh3 86.Q8h6 Kg2 87.Qhh2) 86.Qg8 Kh3 87.Qff7 (87.Qgg3) 87...Kh2 (87...Kh4 88.Qf6 Kh5 89.Qgg6) 88.Qgg6 (88.Qh5) 88...Kh1 (88...Kh3 89.Qff5 Kh4 90.Qgg5) 89.Qff6 Kh2 90.Qfg5 (90.Qh4) 90…Kh1 (90...Kh3 91.Qg3) ½-½. ClayPigeons (2150) - Jagulep (2290), Rated Bullet game, lichess.org, 2020.

6.Bc4 Ne7 7.Qh5 Ng6 8.Nf3 Be6?? (8...Qd7=) 9.Bd3 (9.Be6!? Ke7 10.Bf5 Qe8+-) 9...Nd7?? (9...Bf7 10.Qg4=+) 10.Bf5?? (better 10.Bg6 Ke7 11.Bc2+- (11.Bh7?! Nf8 12.Ng5 Bg8+/-)) 10...Bf5= 11.Bc3?? (better 11.Qf5 a6 12.ba6 Ra6 13.0-0=) 11...0-0 (better 11...Bd3-+) 12.Qg4 (12.Qg4 Bg4 13.d4-+). opperwezen (2785) - mathace (2505), lichess.org, 2017.

5.c4 c6

6.a3 Ne7 7.Nf3 (7.Qh5 g6 8.Qf3 Bf5=+) 7...e4 8.Nd4 0-0 (8...c5 9.Nb3 0-0 10.d4=) 9.Qc2 (9.d3 c5 10.Nb3 dc4 11.dc4 Be6–/+) 9...Bg4 (9...c5 10.Nb3 Nd7=) 10.c5 Be5 11.a4 (11.f4 ef3 12.gf3 Bd4 13.fg4 Bb2 14.Qb2 b6 15.cb6 ab6 16.bc6 Nbc6=+) 11...Nf5 (11...Nd7–/+) 12.d3 (12.Nf5 Bf5 13.Ra2 Nd7–/+) 12...Nd4 (better is 12...Bd4!? 13.ed4 Re8–/+) 13.ed4 ed3 (13...Qa5 14.Bc3 Bd1 15.Qd1 Qc7 16.de5 ed3 17.ef6 Re8 18.Kd2 Qf4 19.Kd3 Qf5 20.Kd2 Qf2 21.Kc1 Qc5+-) 14.Bd3 Bf4 15.0-0 h6 16.h3 Be6 17.Bg6 Nd7 18.Nc3 Qe7 19.Rae1 Rfb8 20.Re2 Nf8 21.Bh5 Rd8 22.Rfe1 Qd7 23.bc6 bc6 24.Bf3 Rab8 25.Qd3 Bf5 26.Qd1 Ne6 27.a5 Rb4 28.Na2 Rb5 29.a6 Rdb8 30.Qa1 Bd3+= 31.Re6 Rb2 32.Nc3 Be4+/– 33.Be4 de4 34.R6e4 Qf5 35.Re8 Kh7 36.Rb8 Rb8 37.Re7 Qd3 38.Qe1 Qd4 39.Ne2 Qc4 40.Nf4 Qf4 41.Ra7 Rb5 42.Rb7 Qa4 43.Qe7 Qa1 44.Kh2 f5 45.Rb5 cb5 46.a7 Qa4 47.Qc7 Qa2 48.c6 Qa6 49.Qb7 Qa4 50.Qb8 Qd4 51.a8Q Kg6 52.Qg3 Kh7 53.Qf8 Qf6 54.Qf6 gf6 55.c7 f4 56.Qd3 Kg7 57.c8Q h5 58.Qcf5 Kf7 59.Qdd7 Kg8 60.Qg6 Kf8 61.Qde8 1–0. SuperForte – REXChess, 1994.

6.a4 (--> 4.e3 c6 5.a4 Bd6 6.c4).

6.Qb3 Ne7 7.a4 0-0 8.d4 Kh8 (8...ed4 9.Bd4 c5 10.Bc3=) 9.Nd2 e4 (9...ed4 10.Bd4 c5 11.Bc3=) 10.c5 Bc7 11.Bc3 Qe8 12.a5 White intends b6 (12.Ne2 Nd7=) 12...Qg6 (12...cb5 13.Qb5 Nbc6 14.Qb3=+) 13.h4 (13.b6 Bd8=) 13...h5 (13...cb5 14.h5 Qh6 15.Bb5=+) 14.Nh3 (14.b6 ab6 15.ab6 Ra1 16.Ba1 Bd8+=) 14...Bg4 (14...cb5!? 15.Qb5 a6=) 15.b6+= ab6 16.ab6 Ra1 17.Ba1 Bd8 18.Nf4 Qf7 19.Be2 (19.Qa4!?+/-) 19...Be2= 20.Ke2 Nf5 21.g3 Be7 22.Bc3 Nd7 (22...Na6 23.Ra1=) 23.Ra1+= Rb8? (23...g5 24.Ng2 gh4 25.Nh4 Nh4 26.gh4=) 24.Ra7 (better 24.Ne4!? g6 25.Nd2+-) 24...g5= 25.hg5 fg5 26.Nh3 Qf6 (26...h4!? 27.g4 Nh6=+) 27.Qb2 Kh7 28.Qa1 (28.Qc2 Bf8=) 28...h4 (28...Kg8 29.Ke1=) 29.g4 Nh6 30.Rb7?? (better 30.f3=) 30...Rb7-+ 31.Qa8 (31.f3 Qe6 32.Qg1 ef3 33.Nf3 Nf7-+) 31...Rb8 32.b7 (32.Qa6 Rf8-+) 32...Ng4 (32...Ra8?! 33.ba8Q Qe6 34.Qe8 Qg4 35.f3 ef3 36.Nf3=+) 33.Qa6 (33.Ba5 Rf8 34.Bc7 Qf5-+) 33...Nh6 (33...Rf8 34.Qa5-+) 34.Ng5 (34.Ke1 Qe6 35.Ng1 Ng4-+) 34...Qg5 35.Qc6 Qf5 36.Qc7 (36.f3 h3 37.Qc7 Rg8 38.fe4 de4-+) 36...h3 37.Ba5 (37.Qh2 Qh5 38.f3 ef3 39.Nf3 Rg8-+) 37...h2! 38.Qh2 Qg4 39.f3 (39.Ke1 Rb7 40.c6 Ra7-+) 39...ef3 40.Nf3 Rb7 41.Bd2 (41.Qg1 Rb2 42.Bd2 Rd2 43.Kd2 Qf3-+) 41...Rb2 (better 41...Bc5 42.Qh4 Qh4 43.Nh4 Be7-+) 42.c6 (42.Qg1 Rd2! 43.Kd2 Qf3-+) 42...Nf6 (42...Bb4 43.Kf2 Bd2 44.Qh6 Kh6 45.cd7 Bc3 46.Nd2 Rd2 47.Kf1 Qd1) 43.c7 (43.Qg1 Qg1 44.Ng1-+) 43...Ne4 44.Kd3 Qf5 (44...Qf3 45.Qh6 Kh6 46.c8Q Rd2) 45.Nh4 (45.Ke2 Nc3 46.Kf2 Rd2 47.Ke1 Rd1 48.Kf2 Ne4 49.Ke2 Ng3 50.Kf2 Rd2 51.Ke1 Qb1 52.Kd2 Bb4) 45…Qe6 (45...Qe6 46.Ke2 Qa6 47.Kd1 Nc3 48.Ke1 Bh4 49.Qh4 Qe2; 45...Qf1 46.Qe2 Rd2) 0-1. zembelek (2090) - amayak (2095), Rated Blitz game, lichess.org, 2014.

6.Qb3 Ne7 7.Nc3 d4 (7...Nd7 8.d4=) 8.Ne4 c5 (8...Bf5 9.Bd3=) 9.Ba3 (better is 9.Nf3=) 9...b6 (better is 9...Qc7=) 10.ed4+/– ed4 (better is 10...Bf5 11.dc5 Bc5 12.Nc5 bc5 13.Bc5 Nd7 14.Be7 Ke7 15.Qa3 Kf7+-) 11.Be2?? (better is 11.Qf3 Be5 12.Ng3+-) 11...Bb7 (11...a6 12.Bb2=) 12.Bf3 Nc8 13.0-0-0 (13.Ne2 Qe7 14.Nd6 Nd6 15.Bb7 Qb7=) 13...Qc7 14.Nd6 Nd6 15.Re1 Kf7 (15...Kd8 16.Ne2 Bf3 17.Qf3=) 16.Ne2+= Nd7 (16...Rc8 17.Nd4 a6 18.Bg4 cd4 19.Bd6 Qc4 20.Kb2 Qb3 21.ab3+/–) 17.Nd4 Ne5 (17...cd4 Exploits the pin 18.Bd6) 18.Nc6 (18.Bh5 g6 19.Bf3 a6 (19...Ndc4? 20.Re5 fe5 21.Qc4 Kf6 22.Bb7 ed4 23.Ba8 Ra8 24.Qd5+-; 19...Nf3?! 20.Nf3 a6 21.Bb2=) 20.Bb7 Nb7=) 18...Nc6+= 19.Bd5 Kf8 20.bc6 Bc6 21.Qf3 (21.d4 A) 21...cd4 22.Re6 Bd5 23.Bd6 Kf7 24.Rf6 (worse is 24.Bc7 Be6 25.Rd1 Rhc8+-) 24...gf6 25.Bc7+-; B) 21...Bd5 22.cd5 Kf7=) 21...Rc8 (21...Bd5 22.Qd5 Rd8 23.Bb2=) 22.Re6 (22.Bc6 Qc6 23.Qc6 Rc6+=) 22...Bd5 23.Qd5 Nf7 24.Rhe1 Rd8 (24...Qh2 25.Qd7 g6 26.Rf6 Kg7 27.Rf7 Kh6 28.Re3 Rce8 29.Rh3 Kg5 30.Rf5 gf5 31.Qg7 Kf4 32.Rf3 Ke4 33.d3) 25.f4 (25.Bb2 Ng5 (25...Qh2?? 26.Qd7 Ne5 27.Qe7 Kg8 28.Be5+-) 26.Rc6 Qb8+-) 25...Ne5 (25...Qf4 26.Qd7 g5 27.Qe7 Kg7 28.Bb2 Qd2 29.Kb1 Qd3 30.Ka1 Qd1 31.Rd1 Rd1 32.Bc1 Rc1 33.Kb2=) 26.fe5= With the decisive threat Rd6 26...Rd5 27.cd5 The passed pawn on d5 will become decisive later 27...Kf7 28.Bb2 Rf8 29.Rc6 (29.d6!? Qd8 30.ef6 gf6 31.Bf6 Qf6 32.Rf6 Kf6 33.d4+/–) 29...Qb7= 30.e6 Kg6 (better is 30...Kg8 31.Bc3 Re8=) 31.Rd6 (31.Re3 h5=) 31...Re8 (31...Qc7 32.Rc6 Qh2+=) 32.Rd7= White prepares the advance e7 32...Qa6 33.e7?? (better is 33.Re3=) 33...Qc4 34.Kb1 (better is 34.Bc3 Qa2 35.g4–+) 34...Qd3 (better is 34...Qf4!? 35.Kc1 Qh4–+) 35.Kc1–/+ Qc4 (35...Kf7 36.d6 b5–/+) 36.Kb1–+ Qf4 37.Ka1 (37.Kc1 Qh4 38.g3 Qh2–+) 37...Qd2 (37...Qh2 38.d6 Qg2 39.Bc3–+) 38.Rc1 Qg2 39.d6 White is in command 39...Qe2?? (39...Kf7 40.Rd8 Qd2 41.Kb1–+) 40.h4? (40.Rd8 Kf7 41.d7 Re7 42.Rf8 Kf8 43.d8Q Re8–/+) 40...Qe6?? (better is 40...Qd2–+) 41.Rd8–/+ Re7 (41...Kf7!? 42.d7 Re7 43.Rf8 Kf8 44.d8Q Re8+=) 42.de7= Qe7 43.Rcd1 (43.Rg1 Kf7 44.Rgd1=) 43...c4 (better is 43...Qe6!?+=) 44.R8d7+= Qe3 (44...Qe4 45.Rg1 Kf5 46.Ra7+/–) 45.h5!+/– (45.Ra7?! c3 46.Bc1 Qg3=) 45...Kf5 (45...Kh5 A deflection 46.Rg7) 46.Rc1 Ke6 (46...Qg3!?+/–) 47.Rg7+- b5 48.Rh7 a5 (48...Qe2 49.Rh8 Kf7 50.h6+-) 49.Rb7 b4 (49...a4 50.a3 (50.Rb5?! a3 51.Ba3 Qa3 52.Rc4 Qf3+-) 50...Qg5 51.Rf1+-) 50.Rc4 a4 51.Rbb4 Qe1 52.Bc1 Qe5 53.Rd4 (53.Kb1 Qh5 54.Re4 Kf7 55.Ra4 Qf3+-) 53...Qh5 54.Ra4 Qh1 The mate threat is Qxc1 55.Kb2 (55.Rac4 f5+-) 55...Qg2 56.Bd2 f5 57.Kb3 (57.Rab4 Ke5+-) 57...Qf3 (57...Qg3 58.Bc3+-) 58.Bc3 (58.Kc2 Qf2+-) 58...Qf1 59.Kb2 (59.Rab4 Qb1 60.Bb2 Qf1+-) 59...Qg2 (59...Qf2 60.Rd2 Qf3 61.Ra6 Kf7 62.Rb6+-) 60.Rd2 Qf1 61.Ra5 Kf7 62.Rad5 f4 (62...Kg6 63.a4+-) 63.Rd1 (63.Rf5 Kg6 64.Re5 Qa6 65.Rg2 Kf7 66.Rf5 Ke7 67.Bb4 Ke6 68.Rg6 Kf5 69.Ra6 f3+-) 63...Qe2 64.R5d2 (64.Kb3 Qe6+-) 64...Qb5 65.Ka1 Qc4 (65...Qc5 66.Rd3 Qf2 67.Rd7 Ke6 68.R7d6 Ke7 69.Rh6+-) 66.Bb2 Ke6 (66...Qe4 67.Rf1+-) 67.Rd6 Kf5 68.Rg1 (68.Rf6 Kg4 69.Be5 Qc5 70.Rf4 Kg5+-) 68...Qb5 (68...Qb4 69.Rd5 Ke6 70.Rd4+-) 69.Rd2 (69.Rf6!? Ke4 70.Re1 Kf3+-) 69...Ke4 (69...Qa6 70.Rd8+-) 70.Rf2 (70.Re1 Kf3 71.Be5 Qc4+-) 70...Qd3 (70...Qb4 71.Rd1 Kf5 72.Rfd2+-) 71.Re1 Kf5 72.Ref1 (72.Rg2 f3 73.Rg8 Qd6+-) 72...Qc4 (72...Qe4 73.Bc1 Qd4 74.Rb2+-) 73.Rc1 (better is 73.a3!? Qe4 74.Bc1 Qd4 75.Rb2 Qc3 76.Rf4 Ke6+-) 73...Qe4 (73...Qd5 74.Rfc2 Qf3 75.Rc5 Ke6 76.Re1 Kd6 77.Rf5+-) 74.Rfc2 Qe3 (74...Qa8 75.Rc5 Kg4 76.R1c4+-) 75.Rc5 Kg4 (75...Ke6 76.Re5 Kd6 77.Re3 fe3 78.a4+-) 76.R5c4 (76.R1c4!? Qh3+-) 76...Kf5 77.Bd4 (77.Rf1!? Qg3+-) 77...Qd3 78.Kb2 Ke6 (78...f3 79.R1c2+-) 79.a4 f3 80.R1c2 Kd5 81.Rb4 Kd6 (81...Qf1 82.Rh2 Qd3 83.a5+-) 82.a5 (82.Rb6!? Kd5 83.Rc5 Kd4 84.Rd6 Kc5 85.Rd3 f2 86.Rc3 Kb4+-) 82...Kd7 (82...Kd5 83.Bb6 Qf1 84.Rf2+-) 83.Rbc4 Qf5 (83...Qe4 84.a6 f2 85.Bf2 Qe5 86.Rd4 Ke6+-) 84.Rc7 Kd8 (84...Ke8 85.Rh2 Qb5 86.Kc1+-) 85.Rb7 f2 86.Bb6 1–0. Katalymov,Boris N – Golyak,Isay, Karaganda, 1958.

6.Qb3 Ne7 7.d4 0-0 8.c5 Bc7 9.a4 Kh8 10.Nd2 Ba5 11.Ngf3 e4 12.Ng1 f5 13.Bc3 Bc3 14.Qc3 f4 15.ef4 Rf4 16.Ne2 Rf8 17.Ng3 Ng6 18.Be2 Qh4 19.0-0 Nf4 20.Qe3 (20.Kh1 Rf6 21.Qe3 Ng2 22.Kg2 Bh3 23.Kg1 Bf1 24.Rf1 Rh6=) 20...Nd7 (better 20...Bh3!? 21.gh3 Qh3-/+) 21.Rfe1 Nf6 22.Ndf1?? (better 22.f3+=) 22...Bg4?? (22...Ng4 23.Bg4 Bg4 24.bc6 Ng2 25.cb7-+) 23.Bg4 (better 23.Qf4 Rac8 24.Ne3+-) 23...Ng4-+ (23...Qg4 24.h3 Qg5 25.f3=+) 24.Qd2 Rae8 25.bc6 bc6 26.Ra3 (better 26.Rab1-+) 26...h5?? (26...Ng2!? 27.Kg2 Rf2 28.Qf2 Nf2 29.Kf2 Qf6 30.Kg2 Qd4 31.Ree3-+) 27.h3? (27.Rc3 Ng2 28.Kg2 Rf2 29.Qf2 Nf2 30.Kf2 Qf6 31.Kg2 h4-+) 27...Nh6?? (better 27...Nf2!? 28.Qe3 N2d3-+) 28.Rae3 (better 28.f3!?=) 28...Qg5-/+ 29.f3 h4 30.fe4 hg3 31.Rg3 (better 31.ed5!? Re3 32.Re3 Qd5 33.Ng3-+) 31...Nh3! 32.gh3?? (32.Rh3 Rf1 Eliminates the defender f1) 32...Rf1! Annihilates a defender: f1 33.Rf1 Theme: Blockade. The mate threat is Qxg5 (33.Kf1 Qd2) 33...Qd2 34.ed5 Qd4 35.Rf2 (35.Kh2 Re2 36.Rg2 Rg2 37.Kg2 Qd5 38.Kg1 Qg5 39.Kh1 Nf5 40.Rf5 Qf5-+) 35...Qc5 (35...Re1 36.Kg2 Qd5 37.Rgf3-+) 36.dc6 (36.Rgf3 Re1 37.Kg2 Qd5-+) 36...Rf8 (36...Re1 37.Kg2 Nf5 38.Rf5 Qg1 39.Kf3 Re3 40.Kg4 Qg3 41.Kh5 Kh7 42.Rf7 Re5 43.Rf5 Rf5) 37.Rgg2 Rf2 38.Rf2 Qc6 39.Rf4 (39.a5 Qc3 40.Kg2 Qa5-+) 39...Qb6 (better 39...Qc1!? 40.Rf1 Qg5 41.Kh1-+) 40.Kg2 g5 41.Re4 (41.Rf3 Qc6 42.Kg3 Qa4-+) 41...Kg7 (41...Qc6 42.Kf3-+) 42.Kf3 (42.Re7 Kf6 43.Re2 Qc6 44.Kf1 Qh1 45.Kf2 Qh3-+) 42...Nf5 (better 42...Qc6 43.a5-+) 43.Re5 Kf6 (43...Qb3 44.Ke4 Nd6 45.Kd4 Qc4 46.Ke3 Qc3 47.Kf2 Qd4 48.Ke2 Qe5 49.Kd3 Qe4 50.Kc3 Qe3 51.Kb4 a5 52.Ka5 Qc5 53.Ka6 Qc6 54.Ka5 Qb7 55.h4 Nc4) 44.Rb5 Qe3 45.Kg2 Qe2 46.Kg1 Ne3 (46...Nh4 47.Rb6 ab6 48.a5 Qg2) 47.Rg5 Kg5 48.h4 Kh4 (48...Kh4 49.a5 Qg2) 0-1. zembelek (2130) - amayak (2090), Rated Blitz game, lichess.org, 2014.

6.Nc3 Be6 7.bc6 bc6 8.cd5 cd5 9.Rc1 a6 10.Nf3 (10.Qa4!? Kf7 11.Nb5=) 10...Ne7= 11.Qa4 Nd7 (11...Bd7 12.Nb5 0-0 13.Ba3 Ba3 14.Qa3=+) 12.Ba3= (12.Ba6?? Qb6-+) 12...Ba3 13.Qa3 0-0 14.Be2 (14.Ba6?? Nb8-+) 14...Nf5 15.0-0 (15.Ba6? Qb6 16.Nd5 Bd5-+ (16...Ra6?! 17.Qf8 Kf8 18.Nb6 Rb6 19.d3=+)) 15...e4 16.Ne1 (16.Nd4 Nd4 17.ed4 Qb6+=) 16...Ne5 17.d3 Nd6 18.Na4 (18.de4 de4 19.Rd1 Nec4 20.Bc4 Nc4=+) 18...Nb5 19.Qb2 Rb8 (19...Qe7 20.de4 de4 21.f4 ef3 22.Nf3=) 20.Nc5= Qd6 (20...Nd6 21.Qc3 Qe7 22.d4=) 21.de4 de4 (21...Nc4 22.Bc4 dc4 23.Ne6 Qe6 24.Nf3=) 22.Ne4+= Qd5 23.Nc5 Bf7?? (better 23...Rfc8 24.Ne6 Rc1 25.Qc1 Qe6+/-) 24.Na6+- Rb6 25.Nc7 Qg2 (25...Nc7 26.Qb6 Qa2+-) 26.Kg2 1-0. allyouneedisluft (2450) - chessforce (2225), Rated Blitz game, lichess.org, 2017.

6.Nc3 Ne7 7.Qb3 Be6 8.d4 0-0 9.c5 Bc7 10.Nf3 e4 11.Ne4!+/- h6 (11...de4 12.Qe6 Double attack (12.Qe6 Pinning; 12.Qe6 Deflection; 12.Qe6 Decoy)) 12.Ned2 f5 (12...b6 13.Bd3+/-) 13.a4 f4 14.e4 Bf7 (14...Rf7 15.Be2+-) 15.e5+- Be6 (15...b6 16.Bd3+-) 16.Bd3 Nd7 17.h4 (17.0-0!? Re8+-) 17...Nf5 18.h5 Ba5 19.Ke2 (19.Kf1!? Rc8+-) 19...Rc8+/- 20.Bc3 (20.Rab1 Bd2 21.Kd2 b6 22.bc6 Rc6+/-) 20...Bc3 21.Qc3 b6 22.cb6 cb5 (22...Qb6 23.Rhc1 c5 24.Kf1+/-) 23.Qb4 Qb6 24.a5 (24.ab5!? Qb8 25.Rhe1+-) 24...Qb8 25.Qb5?? (better 25.a6+/-) 25...Qb5?? (better 25...Nd4 26.Nd4 Qe5 27.Kf1 Qd4-+) 26.Bb5+- Rc2 (26...Kf7 27.Rhc1+-) 27.Bd3 Rb2 28.Rhb1 Rfb8 29.Rb2 Rb2 30.Rb1 (30.Rc1 Nb8 31.Rc7 a6+-) 30...Ra2 (30...Rb1 31.Bb1 Ne7 32.Nh2+-) 31.a6 Nb6 32.Rb5 (better 32.Kd1+-) 32...Bf7?? (32...Bc8!?+/-) 33.Rc5 (33.Bf5 Bh5 34.Be6 Bf7 35.Bf7 Kf7+-) 33...Bh5? (better 33...Ne7 34.Rc7 Nbc8+-) 34.Kf1 (better 34.Bf5 Bf3 35.gf3 Ra6 36.e6+-) 34...Ne7?? (better 34...Nd4 35.Rc1 g5-/+) 35.Rc7+/- Nec8 (better 35...Nbc8!?+/-) 36.Bf5+- Ra1 37.Ke2 Ra6 (better 37...Be8 38.Nh4 Bb5 39.Kf3 Ba6 40.Be6 Kh7+-) 38.Bc8 (38.Rc8?! Nc8 39.Bc8 Rb6+/-) 38...Nc8 (38...Ra2 39.Bb7+-) 39.Rc8 Kh7 40.Rc5 Bf7 41.Kd3 Ra3 42.Rc3?? (42.Kc2 Ra6+-) 42...Ra2?? (better 42...Bg6 43.Ke2 Rc3-+) 43.Ne1 a5 44.Nc2?? (44.Ke2 g5+-) 44...a4?? (better 44...Bg6!? 45.Ke2 Bc2=+) 45.Ra3?? (better 45.Nb4 Ra1 46.Rc7+-) 45...Bg6+= 46.Ke2 Rc2 47.Ra4 Bf5 48.f3 (48.Ra5 Be6+=) 48...g5 (48...Rc3!?=) 49.Ra5+= Be6. zembelek (2130) - amayak (2045), Rated Blitz game, lichess.org, 2014.

6.Nc3 Ne7 7.Nf3 Be6 8.cd5 cd5 9.d4 e4 10.Nd2 f5 11.f4 0-0 A) 12.Rc1 A1) 12...Nd7 13.Qb3 (13.Be2 Nf6 14.0-0 Ng4 15.Bg4 fg4 16.Qb3+=) 13...Rc8 14.Be2 Nb6 15.0-0 Qd7 16.Na4=; A2) 12...a6 13.Qa4 (13.Be2 ab5 14.Nb5 Ra2 15.Qb3 Ra8 16.Nd6+=) 13...Nd7 14.ba6 ba6 15.Ba3 Nb6 16.Qb3+=; B) 12.Be2 Nd7 13.0-0 (13.Rc1 a6 14.Qb3 Qa5 15.Rc2 Rfc8 16.0-0=; 13.Qb3 Rc8 14.Rc1 Nf6 15.0-0 Qa5 16.a4=) 13...Rc8 14.Rc1 g5 15.fg5 Ng6 16.Qb3=.

6.Nc3 Ne7 7.Nf3 Be6 8.cd5 cd5 9.d4 e4 10.Nd2 f5 11.f4 Nd7 A) 12.Qh5 Bf7 (12...Ng6 13.Be2 Rc8 14.Rc1 0-0 15.0-0 Qf6 16.Rc2=; 12...g6 13.Qh6 Rc8 14.Qg7 Rg8 15.Qh7 Bb4 16.Ndb1=) 13.Qg5 (13.Qh4 Rc8 14.Rc1 Qa5 15.Kf2 Ba3 16.Nb3+=; 13.Qd1 Rc8 14.Rc1 Nb6 15.Be2 g5 16.fg5+=) 13...h6 14.Qh4 Rc8 15.Rc1 Qa5 16.Nb3+=; B) 12.Be2= B1) 12...Rc8 13.Qa4 (13.0-0 0-0 14.Rc1 g5 15.fg5 Ng6 16.Qb3=; 13.Rc1 Nb6 14.a4 0-0 15.0-0 Nc4 16.Nc4+=) 13...Nb6 14.Qa5 Bc7 15.Qa3 Ra8 16.0-0=; B2) 12...0-0 13.Qb3 (13.Rc1 Nf6 14.0-0 Ng4 15.Bg4 fg4 16.Qb3+=; 13.0-0 Rc8 14.Rc1 Nb6 15.Rc2 g5 16.Qe1+=) 13...Nb6 14.0-0 Qd7 15.Na4 Na4 16.Qa4+=; C) 12.Rc1 0-0 13.Be2 (13.Qb3 Rc8 14.Be2 Nf6 15.0-0 Qa5 16.Ncb1=) 13...Nb6 14.0-0 Rc8 15.Qb3 Qe8 16.Na4=.

6.Nc3 Ne7 7.Nf3 Be6 8.cd5 cd5 9.d4 e4 10.Nd2 f5 11.f4 g5 12.Qh5 Ng6 13.Qg5 (13.fg5 f4 14.ef4 Bf4 15.Nb3 0-0 16.Nc5+=) 13...Qg5 14.fg5 f4 (14...Be7 15.Na4 Bg5 16.Nc5=) 15.Be2 (15.ef4 A) worse is 15...Nf4 16.Nce4 de4 17.d5+/– (17.Ne4?! Be7=); B) 15...Bf4 16.Nb3 Nd7= (worse is 16...Bg5 17.Nc5 Bf7 18.Nb7+/–)) 15...fe3 (15...Nd7 16.ef4 Bf4 17.Nb3+=; 15...Rf8 16.h4=) 16.Nf1 Bf4 17.h4 h6 (better is 17...Rf8!?=) 18.Bh5+/– Kf7 19.g3 Bd6 20.Ne4! Bb4 (20...de4 21.Bg6 (21.d5)) 21.Ke2 Rc8? (better is 21...Bd7 22.Nf6 Bb5 23.Ke3 hg5 24.hg5 Nd7 25.Nd5 Rae8 26.Kf2 Rh5 27.Rh5 Re2 28.Kf3 Rb2 29.Rh7 Kf8+/–) 22.Ne3+- (22.gh6?! Rc2 23.Kd3 Rb2 24.Ng5 Ke7 25.Bg6 e2 26.Ne6 Ke6+/–; 22.Ke3?! de4 23.gh6 Nd7+=) 22...Bd7 (22...Kg7+-) 23.a4 (better is 23.Nd5 Rc2 24.Ke3 Rb2 25.gh6 Bb5 26.Nc7+-) 23...de4+/– 24.gh6 Be8 25.Nd5 Rc2 26.Ke3 Nd7 27.Nb4 (27.Bc1!? Bd6+-) 27...Rb2 28.Nd5 Rb3 29.Ke4 Rg3 30.Rhg1 (30.Rac1 Kg8 31.Rc7 Ngf8+-) 30...Nf6+/– 31.Nf6 Rg1 32.Rg1 Kf6 33.Rf1 Ke7 34.h7 (34.Kf5 Nh8 35.Re1 Kf8 36.Be8 Rd8+-) 34...Bf7 (34...Nh8 35.Rf5+/–) 35.Rc1 (35.Kf5 Nh8 36.Re1 Kd6 37.Bf7 Rf8 38.Re6 Kd7+-) 35...Kd6 (better is 35...Kf6 36.Rc7 Re8 37.Kf3 Rh8 38.Bg6 Kg6+/–) 36.a5 (better is 36.Rg1!? Re8 37.Kf5 Ne7 38.Kg5 Bh5 39.Kh5+/–) 36...Rh8= 37.b6? (better is 37.Rc5 Rh7 38.a6+=) 37...ab6–/+ 38.ab6 Rh7 39.Rc7? (better is 39.Bg6 Bg6 40.Kf4–/+) 39...Bd5–+ 40.Kf5 Rh5 (40...Rh5 41.Kg6 Rh4–+; 40...Nh4?! 41.Kg5 Rh5 42.Kh5–+) 0–1. Rosell,Per – Knudsen,Per, DEN–chB Horsens, 1978.

6.d4 e4 7.Qb3 Ne7= 8.Nc3 0-0 (better 8...Qa5!?=) 9.c5 Bc7 10.Ne4 cb5 11.Bb5 (11.Qb5? de4 12.f3 f5-+) 11...Kh8 (11...Nbc6 12.Nc3+/-) 12.Nd2 f5 (12...Nbc6 13.Ngf3+/-) 13.Ngf3 f4 14.e4 de4 15.Ne4 Bf5 16.Ned2 Nd5 17.0-0 Nc6 18.Rae1 Nf6 (18...Rb8 19.Re2+/-) 19.Ne5 (19.Re2 a6 20.Bd3 Na5+-) 19...Nd4 20.Bd4 Qd4 21.Ndf3 (21.Nf7 Kg8 22.Nh6 Kh8 23.Nf5 Qd2+/-) 21...Qd5 (21...Qc5 22.Nf7 Rf7 23.Qf7+=) 22.Qd5+/- Nd5 23.Bc4 Rad8 (23...Be5 24.Ne5 Nb4 25.g4 fg3 26.fg3+- (26.hg3?! b5 27.Bb5 Rac8+=)) 24.Rd1 (24.Ng5!? Kg8 25.Rd1 Be5 26.Rd5 Rd5 27.Bd5 Kh8 28.Re1+- (worse 28.Bb7 g6+/-)) 24...Be6+= 25.Rfe1 Bg8 26.h3 (26.Rb1 b6 27.c6 Rfe8+/-) 26...Nf6 27.Bg8 Kg8 28.Rd8 Rd8 29.Ng5 (29.Rb1 Rb8+=) 29...Be5= 30.Re5 h6 31.Nf3 Rd1 32.Kh2 (32.Re1 Re1 33.Ne1 Ne4=+) 32...Ra1 (32...Kf7 33.Re2 Nd7 34.Rc2=) 33.Re7= Rb1 34.a4 (34.Nd4 Nd5 35.Re8 Kf7=) 34...Kf8 35.Rc7 Nd5 36.Rd7 Nc3 (36...Nf6 37.Rd8 Ke7 38.Rb8=) 37.Ne5 (37.Rd4 Ra1+=) 37...Na4= 38.Ng6 Kg8 39.Ne7 (39.c6 bc6 40.Ra7 Nc5=) 39...Kh7=+ 40.Nf5 Nc5 41.Rg7 Kh8 42.Rc7 Ne4 (42...Nd3 43.g3=+) 43.Nh6 (43.Rc4 Nf2 44.Rf4 Rb2=) 43...Nf2 44.h4?? (better 44.g3 f3 45.Nf7 Kg8 46.Nh6 Kf8 47.Rf7 Ke8 48.Rf3 Nh3 49.g4-/+) 43…Rh1 0-1. zembelek (2090) - MagnusCa (2190), Rated Blitz game, lichess.org, 2013.

6.d4 e4 7.Nc3 Ne7= 8.f3 f5 9.f4 (9.bc6 A) 9...Nbc6 10.cd5 (worse is 10.Nd5 Nd5 11.cd5 Qa5 12.Kf2 Qd5+=) 10...Nb4 11.fe4 fe4 12.Bb5 Bd7 13.Bd7 Qd7 14.Ne4=; B) 9...bc6 10.Rb1 0-0=) 9...0-0 10.Nh3 h6 (10...Bc7 11.Be2=) 11.Be2 (11.Qb3 Kh7=) 11...Be6 (11...b6 12.Qb3 Be6 13.0-0=) 12.Qb3 (12.c5 Bc7=) 12...dc4 13.Bc4 Bc4 14.Qc4 Kh7 15.0-0 Nd7 16.a4 Nb6 17.Qe2 Ned5 18.bc6 bc6 19.Nf2 Rb8 20.Nfd1 a5 21.Kh1 (21.Ba3 Ba3 22.Ra3 Qd6+=) 21...g5 (21...Bb4 22.Rb1–/+) 22.g3 (22.fg5!? Qg5 23.Ba3=) 22...gf4+= 23.ef4 (23.gf4 Rg8+=) 23...Qf6 (better is 23...Qd7–/+) 24.Ne3?? (better is 24.Nd5 Nd5 25.Rb1+=) 24...Ne3–+ 25.Qe3 Nc4 26.Qe2 (26.Ne4 Qe7 (26...fe4?! 27.Qe4 Qf5 28.Qf5 Rf5 29.Bc3–+) 27.Ng5 hg5 28.Qe7 Be7–+) 26...Nb2 (26...Rb2?! 27.Qc4 Qf7 28.Qf7 Rf7 29.Rfb1–/+) 27.g4 (27.Qe3–+) 27...Qd4 28.gf5 (28.Qc2 Nd3 29.Ne2 Qd5–+) 28...Qc3 29.Qh5 (29.Qe4 Qc4 30.Rae1 Qe4 31.Re4 Rf5–+) 29...Qf6 30.Rac1 Qf5 31.Qh4 (31.Qf5 Rf5 32.Rc6 Rf4–+) 31...e3 32.Rf3 Qe4 33.Qh3 Rf4 34.Qg2 Qf3 35.Rc6 Qf1 (35...Qf1 36.Qf1 Rf1 37.Kg2 Rf5 38.Kh3 Rg8 39.Rc7 Bc7 40.Kh4 Bd8 41.Kh3 Rf3; 35...Qd1 36.Qg1 Qd5 37.Qg2 Rf1) 0–1. Pats,V (1995) – Rychkov,O (2315), Vladivostok RUS, Russian Cup, 2012.

6.d4 e4 7.bc6 bc6 8.cd5 cd5 9.Bb5 Kf7 10.Qh5 Ke6+=.

6.d4 e4 7.Nd2 Ne7 8.Qb3 f5 9.c5 Bc7 10.a4 (10.Nh3 0-0=) 10...0-0 (10...Nd7 11.Nh3=) 11.g3 (11.Ne2 Nd7=) 11...Ba5 12.Bc3 Nd7 13.h4 Bc3 14.Qc3 b6 15.cb6 cb5 (15...ab6 16.bc6 Qc7 17.Bb5=) 16.ba7+= (worse 16.Bb5 ab6 17.Ne2 Nf6=+) 16...Ra7 17.Bb5 Ba6 18.Ne2 Bb5 19.ab5 Ra1 20.Qa1 Qb6 21.Nc3 Rc8 22.0-0 f4 (22...Qd6 23.Rc1+=) 23.gf4 (23.Qa3 Qe6 24.ef4 Nb6+/-) 23...Qe6 (23...Qg6 24.Kh2=) 24.f3 (24.Rc1 Nb6+=) 24...Qh3 (24...ef3 25.Rf3 Nf5 26.Nd1=) 25.Rf2+= Nf5? (better 25...Nf6+=) 26.Nd5+- Nh4?? (26...ef3 27.Nf3 Qg4 28.Kf1 Nf6 29.Nf6 gf6 30.Qa2 Kh8+/-) 27.fe4 (better 27.Ne7 Kh8 28.Nc8 Qg3 29.Kf1 Qh3 30.Ke1 Qh1 31.Rf1+-) 27...Qg3 (27...Rb8 28.Qa6+-) 28.Kf1 Nf6 29.Ne7 (better 29.Nf6 gf6 30.Ke2+-) 29...Kf7?? (29...Kh8 30.Qa6 Re8=) 30.Nc8+- Qe3 (30...Ng4 31.Qa2 Kf8+-) 31.Qa7 (better 31.Qa2 Kf8 32.Nd6 Qh3 33.Ke1 Qd7 34.Qa8 Ke7+-) 31...Kg6 (31...Kg8 32.Qa2 Kh8 33.Ne7+-) 32.Ne7 (better 32.Rg2 Ng2 33.Ne7 (33.Kg2? Qd2 34.Kg1 Qe3 35.Kf1 Qf4 36.Ke1 Qe4 37.Kd2 Qf4 38.Kc2 Qf5 39.Kb2 Qc8-+) 33...Kh6 34.Nf5 (34.Kg2?! Qd2 35.Kf1 Qf4 36.Ke2 Ne4=) 34...Kh5 35.Qf7 Kg4 36.Qg7 (36.Kg2 Qd2 37.Kg1 Qe1 38.Kh2 Qf2 39.Kh1 Qf1 40.Kh2 Qf4 41.Kg1 Ne4 42.Qg7 Kf5 43.Qh7 Kg4 44.Qg8 Kf3 45.Qb3 Ke2 46.Qb2 Nd2-+) 36...Kf4 37.Qh6 Kg4 38.Ne3 (38.Qf6?! Qe1 39.Kg2 Qd2 40.Kf1 Qd1 41.Kf2 Qd2 42.Kg1 Qc1 43.Kh2 Qf4 44.Kh1 Qc1 45.Kg2 Qd2 46.Kf1 Qd1 47.Kf2 Qd2 48.Kf1=) 38...Ne3 39.Qe3 Nh5 40.Qg1 Ng3 41.Kf2 Kg5 42.Qg3 Kf6 43.b6 Ke6 44.Qg8 Kf6 45.b7 h5 46.b8Q h4 47.Qd6) 32...Kh5 (32...Kh6 33.Qc5 Qd3 34.Ke1 Ne4 35.Ne4 Qe4 36.Kd2 g6+-) 33.Qc5 Kg4 (33...Nd5 34.Qd5 Kg4 35.Rg2 Ng2 36.Qg5 Kh3 37.Qg2 Kh4 38.Nf5 Kh5 39.Qg5) 34.Qg5 (34.Rg2 Kh3 35.Qc8 Nf5 36.Qf5 Kh4 37.Rh2 Qh3 38.Rh3) 34...Kh3 35.Nf5 (35.Rf3! Qf3 36.Nf3 Nf3 37.Qg2 Kh4 38.Kf2 Ne4 39.Kf3 Nd2 40.Qd2 Kh3 41.Qg2 Kh4 42.Qg4) 35...Qd3 36.Re2 (36.Re2 Nf5 37.Qg2 Kh4 38.Nf3 Qf3 39.Qf3 Ng3 40.Kg2 Ng4 41.Qg3 Kh5 42.Rc2 g5 43.Qh3 Kg6 44.Qg4 h5 45.Qg5 Kf7 46.Rc7 Ke6 47.Qe5; 36.Kg1 Nf3 37.Rf3 Qf3 38.Qh4) 1-0. zembelek (2125) - amayak (2075), Rated Blitz game, lichess.org, 2013.

6.d4 Ne7 7.c5 Bc7 8.de5 Be5 9.Be5 fe5 10.Qd2 +=.

6.cd5 cd5 7.Qb3 Ne7 8.Nf3 Nd7 9.Be2 0-0 10.0-0 Kh8 (10...Nc5 11.Qc2+=) 11.d4 (11.Rc1 Nc5 12.Qc2 Bf5+=) 11...e4 12.Nfd2 f5 (12...Qc7 13.h3+=) 13.Nc3 Nf6 14.Ba3 f4 15.Bd6 Qd6 16.Rfe1 (16.Rac1 Bg4=) 16...g5 (16...fe3!? 17.fe3 Nf5+=) 17.Rac1 (17.Nd1 Ng4 18.Bg4 Bg4=) 17...Nf5 18.Nf1 Be6 19.Na4 (19.Qa4=) 19...Nh4 (better is 19...fe3!? 20.fe3 Rac8=) 20.Nc5+/– Ng2 21.Ne6 Qe6 22.Kg2 f3 23.Kh1 (23.Bf3 ef3 24.Kg1 Qh3 25.Qd5 Qg2) 23...Qh3–/+ Threatening mate... how? 0–1. Kreuzer,Uwe – Geier, Landesliga Mannheim, 1989.

6.cd5 cd5 7.Nc3 Be6 8.Nf3 (8.d4 Ne7=) 8...Nd7 9.a4 (9.Be2 Ne7=) 9...Ne7 10.d4 e4 11.Nd2 0-0 12.Be2 f5 13.0-0 Kh8 (13...Rc8 14.Rc1+=) 14.f3 Nf6 (14...f4 15.fe4 fe3 16.e5 Be5 17.de5 ed2 18.Rf8 Qf8 19.Qd2=) 15.Nb3 White intends a5 (15.Ba3 ef3 16.Nf3 Ne4=) 15...Rc8 (15...ef3 16.Bf3 Ne4 17.Rc1=) 16.Qd2 (16.Nc5 Bc5 17.dc5 Rc5=) 16...Qe8 (16...ef3 17.Bf3 Ne4 18.Be4 de4 19.Nc1–/+) 17.Ba3= Ba3 18.Ra3 b6 (18...ef3 19.Bf3 Ne4 20.Be4 de4 21.Rf2=) 19.a5 Qd7 (19...ef3 20.Bf3 Ne4 21.Be4 de4 22.ab6 ab6 23.Rfa1=) 20.Rc1 (20.ab6 ef3 21.Bf3 ab6=) 20...Qb7 (20...ef3 21.Bf3 Ne4 22.Be4 de4 23.Rca1=) 21.Na4 (21.f4 Kg8+=) 21...g5 (21...ef3 22.Bf3 Ne4 23.Rc8 Rc8 24.Qb4=) 22.Raa1 (22.Rc8 Nc8 23.ab6 ab6+=) 22...Bd7 (22...ef3 23.gf3 g4 24.ab6 ab6 25.Nb6 Rc1 26.Qc1 gf3 27.Bf3 Rg8 28.Kh1 Qb6 29.Ra6 Qb5 30.Re6–/+) 23.Qb4 Be6 (23...Rce8!?+/–) 24.Qd6 (24.Rc8 Rc8 25.ab6 ab6 26.Qd6 ef3 27.Qe6+-) 24...Qd7 ½–½. Schmidt,Alexander – Jurga,David, NRW–chT, 1993.

6.cd5 cd5 7.d4 e4=.

6.cd5 cd5 7.Nf3 Ne7 8.Be2 0-0 9.0-0 Be6 10.d4 e4 11.Nfd2 Ng6 12.Nc3 f5 13.Qb3 Bc7 14.Rac1 f4 (better is 14...Rf7!?+=) 15.Nde4! fe3 (15...de4 16.Qe6 Double attack (16.Qe6 Pinning; 16.Qe6 Deflection; 16.Qe6 Decoy)) 16.fe3 1–0. DEFFM – GuestMKWT, freechess.org, 2017.

6.Nf3 e4 A) 7.Nh4 Be6 (7...Ne7 8.bc6 bc6 9.cd5 Qb6 10.Bd4 c5 11.Bc3=) 8.bc6 (8.Nc3 g5 9.bc6 bc6 10.Qb3 gh4 11.cd5+=) 8...bc6 9.cd5 cd5 10.Qa4 Kf7 11.Qd1+=; B) 7.Ng1 B1) 7...Ne7 8.Qh5 (8.bc6 bc6 9.Qh5 Kf8 10.cd5 cd5 11.f3=) 8...g6 9.Qh4 Ng8 10.Nc3 Be7 11.bc6+=; B2) 7...dc4 8.Nc3 (8.Bc4 Bf5 9.Nc3 Nd7 10.bc6 bc6 11.d4=) 8...Be5 9.Bc4 cb5 10.Bb5 Bd7 11.d4=; B3) 7...Be6 8.Nc3 dc4 9.Ne4 Bd5 10.Nc3 Bb4 11.Nd5=; B4) 7...Qe7 8.d4 (8.Nc3 Be6 9.bc6 bc6 10.Qa4 Bd7 11.cd5+=; 8.cd5 cd5 9.Qh5 Qf7 10.Qf7 Kf7 11.d3=; 8.bc6 bc6 9.Nc3 dc4 10.Bc4 Nd7 11.Bg8+=) 8...Be6 9.c5 Bc7 10.Qa4 Bd8 11.Nc3+=; B5) 7...Bf5 8.cd5 (8.Nc3 Ne7 9.d3 Qa5 10.Qd2 ed3 11.cd5=; 8.bc6 bc6 9.Nc3 Ne7 10.d4 Nd7 11.c5+=; 8.d4 dc4 9.Bc4 cb5 10.Bb5 Nd7 11.Qb3=) 8...cd5 9.Nc3 Ne7 10.Nge2 Be5 11.Ng3=; C) 7.Nd4 c5 8.Nb3 dc4 9.Bc4 Bf5 10.Nc3 Qe7 11.Na5+/–.

6.Nf3 Be6 7.cd5 cd5 8.d4 (8.Ba3 Ba3 9.Na3 Ne7 10.Be2 Qa5 11.Nb1=) 8...e4 9.Nfd2 Ne7 10.Qb3 Qd7 11.Ba3=.

6.Nf3 Qe7 7.d4 (7.Nc3 d4 (7...Be6 8.bc6 bc6 9.Qb3 dc4 10.Bc4 Nd7 11.Be6+=; 7...dc4 8.Bc4 Bg4 9.Ne4 Nh6 10.0-0 Bc7 11.bc6=; 7...e4 8.Nd4 dc4 9.Bc4 Be5 10.Qc2 f5 11.bc6+=) 8.Ne4 Bc7 9.ed4 f5 10.Ng3 ed4 11.Qe2=) 7...e4 (7...dc4 8.Bc4 Bg4 9.de5 Be5 10.Bc3 cb5 11.Bb5=; 7...Bg4 8.de5 Be5 9.Bc3 Bf3 10.gf3 dc4 11.Bc4=) 8.Nfd2 f5 (8...Be6 9.bc6 bc6 10.Nc3 Nh6 11.cd5+=) 9.Nc3 (9.Qa4 f4 10.ef4 e3 11.fe3=) 9...Nf6 10.a4 (10.Qa4 Qf7 (10...Qd7+= 11.bc6+/–) 11.Ba3+=) 10...0-0 (10...Be6 11.c5=) 11.a5 (11.Qb3 Qf7=) 11...f4 12.c5 (12.Qb3 fe3 13.fe3 Be6+=) 12...fe3 13.fe3 Bc7 14.b6 Bd8 15.Be2 Ng4 16.Bg4 Qh4 17.g3 Bg4 18.Qc2 (18.gh4?? Bh4) 18...Qh6 19.Nf1 Bg5 20.Bc1 ab6 21.cb6 Rf6 (21...Be7 22.Ra4–+) 22.Nd1 (22.h4 Rf3–/+) 22...Nd7 (22...Bf3 23.Rg1 Qg6 24.Qc3–+) 23.Nf2 (23.h4 Bd1 24.Qd1 Rf7–+) 23...Bh3 (23...Bf3 24.Rg1 Rf7 25.Ra4–+) 24.Nh3 Qh3 25.Ra2 ½–½. Kilpatrick,Robert – Watson,Joe, corr SCCA, 1978.

6.Qh5 g6 7.Qd1 Ne7 (7...Be6 8.cd5 cd5 9.d4+=) 8.a4 (8.d4 0-0=) 8...cb5 (8...Be6 9.cd5 cd5 10.Nf3+=) 9.ab5 Be6 10.Nf3 dc4 11.Nc3 (11.Qc2 Qc7+=) 11...0-0 12.Be2 (12.Qa4 Qc7–/+) 12...Bb4 (12...Nd7 13.Ne4 Nb6 14.Nd6 Qd6 15.Ba3–/+) 13.0-0 (better is 13.Qa4 a5 14.Na2+=) 13...Nd5 (13...Qd7 14.Qa4 a5 15.Rfd1+=) 14.Nd5?? (14.Bc4!? Kg7 15.Qb3 Bc3 16.dc3+- (16.Bc3?! Qd7+=)) 14...Bd5 (14...Qd5!? 15.Qa4 Be7+=) 15.Qa4 (15.Qc2 Qc7+=) 15...Qd6 (15...Qe7 16.Bc3 Bc3 17.dc3+=) 16.Rfd1 (16.Bc3 Bc3 17.dc3 Rc8=) 16...Qc5 (16...a5 17.e4 Be4 18.Bc4 Kg7 19.d4 Bf3 20.gf3–/+) 17.d4 (better is 17.Rdc1 Rc8 18.e4 Be4 19.d4 (19.Bc4?! Qc4 20.Rc4 Rc4+-) 19...ed4 20.Rc4+- (20.Bc4?! Kg7 21.Be6 Bc3 22.Bc3 dc3 23.Qe4 Rc7+-)) 17...ed4 (better is 17...cd3 18.Rd3 Be6+=) 18.Bd4+/– (worse is 18.Nd4 c3 19.Rac1 a6+=) 18...Qe7 19.Bf6! Rf6 (19...Qf6 20.Rd5 Discovered attack (20.Qb4 Deflection; 20.Qb4 Overloading); 19...Rf6 20.Rd5 Discovered attack) 20.Rd5 c3 21.Bc4 (21.Re5!? Qf8 22.Re4+-) 21...Kg7+/– 22.Rad1 (22.Re5 Qf8 23.Re4+/–) 22...a5 (22...Ba3 23.Qc2 Bb2 24.Ne5+/–) 23.Rd8 (23.ba6!? ba6 24.Rd7 Nd7 25.Rd7+-) 23...Rf8 (23...Rd6 24.R1d6 Bd6 25.Rg8 Kh6 26.Qc2+/–) 24.R8d4 (24.Rf8 Qf8 25.Ng5 Qe7 26.Ne6 Kh6+-) 24...b6 25.Bd5 Ra7 26.Re4 Qc5? (better is 26...Qd7+/–) 27.Ng5+- Rf6 (27...Re7 28.Re7 Qe7 29.Ne6 Kg8 30.Nf8 Kf8 31.Rd4+-) 28.Ne6 (better is 28.Rh4 h6 29.Ne4+-) 28...Kh8?? (28...Re6 29.Be6 Nd7+-) 29.Nc5 Bc5 30.Re8 (30.Re8 Rf8 31.Rf8 Bf8 32.Qf4+-) 1–0. DEFFM – stjurs, freechess.org, 2016.

6.Qb3 Be6

7.a4 Ne7 8.Nf3 Nd7 9.d4 e4 10.Nfd2 Rc8 11.c5+/- Bb8 12.Ne4 0-0 13.Ned2 (13.Bd3 Rf7 14.Nd6 Bd6 15.cd6 Ng6+/-) 13...Bf7 (13...b6 14.cb6 Qb6 15.bc6 Nc6 16.Nc3+/-) 14.Nc3 (14.bc6 bc6 15.Ba6 Rc7+-) 14...f5 (14...Nc5 15.dc5 d4 16.Bc4 dc3 17.Bc3 cb5 18.Qb5+/-) 15.g3 (15.bc6 Nc6 16.Qb7 f4+-) 15...Nf6 (15...Re8 16.Bg2+/-) 16.h4 (16.bc6 bc6 17.Ba6 Rc7+/-) 16...Ne4 17.Nce4 (17.bc6 bc6 18.Ba6+/-) 17...fe4? (17...de4 18.Bc4+=) 18.Be2 (better 18.Bh3!?+-) 18...Qd7 19.Qd1 (19.h5 Be6+=) 19...Be6= 20.h5 h6 21.Rh4 (21.Qb3 Rf7 22.b6 ab6-/+) 21...Kh7 (21...Nf5 22.bc6 Rc6 23.Rh2 Ne3 24.Qb3-/+) 22.Bg4 (22.Qc2 Kg8=) 22...Ng8 (22...Nf5!? 23.Bf5 Rf5 24.bc6 bc6-/+) 23.Be6= Qe6 24.Qg4 Qf7 25.Rh2 Nf6 26.Qf5 Kh8 27.0-0-0?? (better 27.Bc3!?=) 27...Qc7 (27...cb5 28.Kc2 ba4 29.Rb1-+) 28.Qg6 (28.Bc3!?-/+) 28...Qa5 29.bc6 (29.f3 ef3 30.Nf3-/+) 29...bc6 (better 29...Rc6!? 30.f4 b6-+) 30.f3-/+ ef3 31.Nf3 (31.Rf2 Bc7 32.Rdf1 Rb8-/+) 31...Qa4 32.Ne5 Kg8 (32...Be5 33.de5 Ng8 34.e6=+) 33.Rf2=+ Ne4 (33...Be5 34.de5 Nh7 35.Rf4=+) 34.Rf8 Rf8 35.Qc6 Qb3 36.Qe6 Kh7 37.Qg6 Kg8 38.Qe6 Kh7 39.Qg6 Kg8 40.c6?? (40.Qe6 Kh7=) 40...Rf2 (40...Be5 41.Qe6 Kh8-+) 41.Qe8= Kh7 42.Qg6 Kg8 43.Qe6 Kh7 44.Qg6 Kg8 ½-½. zembelek (2140) - Serzh1956 (2210), Rated Blitz tournament, lichess.org, 2016.

7.d4 ed4!? 8.Bd4 Nd7=.

7.d4 e4 8.Nd2 f5 (8...dc4 9.Bc4 Bc4 10.Nc4+=) 9.c5 Be7 10.Nh3 (10.bc6 Nc6 (worse 10...bc6 11.Qb7 Nd7 12.Qc6+-) 11.Qb7 Bd7+=) 10...Nh6 (10...Qd7 11.Nf4+=) 11.Be2 (11.bc6 Nc6 12.Qb7 Bd7+/-) 11...0-0 12.a4 (12.bc6 Nc6 13.Qb7 Bd7+/-) 12...Nd7 (12...b6 13.0-0+=) 13.Bc3 White intends a5 13...g5 (13...Rc8 14.0-0+=) 14.a5 (14.bc6 bc6 15.Qb7 Rc8+/-) 14...a6 15.bc6 bc6 16.Qb7 Qc8 17.Qc8 (17.Rb1 f4+=) 17...Rfc8= (worse 17...Rac8 18.Ba6 Rb8 19.f4+-) 18.f3 (18.Rb1 Rcb8=) 18...ef3 (18...Bf6!?=) 19.gf3+= (worse 19.Bf3 Bf6 20.Be2 Nc5=+) 19...Rcb8 (19...Kh8 20.Rg1 Rg8 21.Nf2+=) 20.Nf2 (20.Rg1 g4+/-) 20...Rb7 21.Kd1 Raa7 (21...Bf6 22.Ra3+=) 22.Kc2 Bd8 23.Rhg1 Nf7 24.h4 h6 25.hg5 hg5 26.Nh3 (better 26.Nd3+=) 26...f4? (better 26...Kf8=) 27.Nf4+- Bf5 28.Bd3 (28.e4 de4 29.fe4 Kf8+-) 28...Bd3 29.Nd3 Kh7 (29...Rb5 30.e4 Nb8 31.ed5 cd5 32.f4+-) 30.Rh1 (30.e4 de4 31.fe4 Be7+-) 30...Kg6 31.Rag1 (31.e4 de4 32.fe4 Rb5+-) 31...Nh6? (better 31...Rb5 32.Rb1 Rab7+-) 32.Nf4 Kh7 (32...Kf7 33.Nd5 Nf5 34.Nb6 Ne3 35.Kd3+-) 33.Ne6 Bf6 34.Ng5 (34.f4 Kg6 35.fg5 Nf5 36.gf6 Kf6+-) 34...Bg5 35.Rg5 Nf6 36.e4 Rb5 (36...Rg7 37.Rg7 Rg7+-) 37.e5 Nfg8 38.f4 (38.Rg8 Kg8 39.Rh6 Rc7+-) 38...Rf7 (38...Rb8 39.f5 Rf7 40.Nf1+-) 39.Rh4 (better 39.Rg8 Kg8 40.Rh6 Rc7+-) 39...Ne7 40.Rgh5 Nef5 41.Rg4 (better 41.Rh3+-) 41...Ne3-+ 42.Kd3 Neg4 43.Nf3 (43.f5 Rf5 44.Rf5 Nf5-+) 43...Rf4 44.Rh3 (44.Nd2 Kg6 45.Rh1 Nf5-+) 44...Rb3 (better 44...Nf2 45.Ke3 Nh3 46.Ng5 Ng5 47.Kf4 Ne4-+) 45.Kc2 Rb5 (better 45...Rb7!? 46.Bd2 Rf8 47.e6-+) 46.Bd2?? (46.Kd3 Nf2 47.Ke3 Nh3 48.Ng5 Ng5 49.Kf4 Ne4-+) 46...Rf8 (better 46...Re4 47.Ng5 Kg6 48.Ne4 de4-+) 47.Ng5?? (better 47.Nh2 Kg7 48.Ng4 Ng4 49.Rg3=+) 47...Kg6-+ 48.Ne6 Rf1 (48...Rf2 49.Nf4 Kf7 50.e6 Ke7 51.Kc1-+) 49.Nf4 (49.Nd8 Nf5 50.Nc6 Ra1-+) 49...Kf5 (49...Kf7 50.Rh5-+) 50.Nd3 Kg6 51.Nf4 Kf5 (51...Kf7 52.Rh5-+) 52.Nd3 Kg6?? (52...Nf7 53.Rh5 Ke6 54.Rh4-+) 53.Rg3?? (53.Nf4 Kf7 54.Rh5 Ra1 55.e6 Kf6-+) 53...Kh5 (better 53...Kf7-+) 54.Rh3= Kg6 55.Rg3?? (55.Nf4 Kf7 56.Rh5 Ra1 57.Nd5 cd5 58.Bh6 Ra2 59.Kc1 Ra4 60.Rf5 Ke8 61.Rf8 Ke7-+) 55...Kf5 (55...Kf7 56.Nb4 Nf5 57.Rg4 Rb4 58.Bb4 Ne3 59.Kd3 Ng4 60.Bd2-+) 56.Nc1?? (56.Rh3 Nf7 57.Rh5 Ke6 58.Rh4-+) 56...Rf2 57.Nd3 Rf1 (better 57...Rh2!? 58.Rf3 Ke6 59.Nf4 Kd7 60.Rh3 Rh3 61.Nh3-+) 58.Rh3 Ke4?? (better 58...Nf7-+) 59.Rh4-/+ Kf5 (59...Rg1 60.Bh6 Kd4 61.e6 Rg2 62.Bd2-/+) 60.Bh6 (60.Rh3 Nf7-+) 60...Nh6 (better 60...Ra5 61.Nb4 Ra3 (61...Nh6?! 62.Rh6 Rf2 63.Kb3 Rf3 64.Kc2=) 62.Nc6 Rf2 63.Kb1 Rb3 64.Kc1 Rg3-+) 61.Rh6= Kg5 (61...Ra1 62.Rc6 Ke4 63.Rh6 Ra2 64.Kc3 Ra3 65.Kc2 Rd3 66.Rh4 Ke3 67.Rh3 Kd4 68.Rd3 Ke5 69.c6 Rc5 70.Kd2 Rc6 71.Re3 Kd4 72.Rb3-+) 62.Rc6+= Ra5 63.Rb6 (63.Rc8 Rfa1 64.Rg8 Kf5+=) 63...Ra2= 64.Rb2 Rb2 65.Nb2 (65.Kb2 a5=) 65...Kf5 66.c6 Ke6 (better 66...Ke4 67.Na4 Rf7=+ (67...Kd4? 68.e6 Rf8 69.e7+-)) 67.Na4 Rf4 68.Kc3 Ke7? (68...a5 69.Nc5 Ke7+-) 69.Nc5?? (69.Nb6 Rf3 70.Kb4+-) 69...a5+/- 70.c7 Rf8 71.Kb3 Rc8 72.Na6 Ra8?? (72...Kd7 73.Ka4 Kc6 74.Ka5 Ra8=) 73.Ka4 (better 73.Nb8 Kf7 74.c8Q Rb8 75.Qb8 a4 76.Ka4 Kg6 77.Qg8 Kf5 78.e6 Kf6 79.Qf7 Kg5 80.e7 Kg4 81.e8Q Kh4 82.Qf3 Kg5 83.Qeh5) 73...Kd7 74.Ka5 (better 74.Kb5 Rh8 75.Ka5+-) 74...Kc6= 75.e6 Kb7 76.Kb5 Ra6 77.c8Q Kc8 78.Ka6 Kc7 79.Kb5 Kd6 80.Kb6 Ke6 81.Kc6 Ke7 82.Kd5 Kd7 83.Ke5 Ke7 84.Kd5 Kd7 85.Kc5 Kc7 86.d5 Kd7 87.Kd4 Kd6 88.Ke4 Kd7 89.Ke5 Ke7 90.d6 Kd7 91.Kd5 Kd8 92.Kc5 Kc8?? (better 92...Kd7=) 93.Kc6+- Kd8 94.d7 (94.d7 Ke7 95.Kc7+-) 1-0. zembelek (2055) - amayak (2075), Rated Blitz game, lichess.org, 2013.

7.d4 Ne7 8.c5 Bc7 9.Nd2 0-0 10.Ngf3 Nd7 11.a4 (11.Be2 Rb8=) 11...Rc8 12.Bd3 Ng6 (12...Kh8!? 13.Be2 e4=) 13.Bg6 hg6 14.0-0 Qe7 15.a5 cb5 (15...a6 16.b6 Bb8 17.Qb4=) 16.Qb5 (16.Ba3 Qf7 17.a6 e4 18.ab7 Rb8+-) 16...Rb8 17.Ba3 Qf7 (17...Qd8 18.a6 e4 19.ab7 ef3 20.Nf3+/-) 18.de5 (18.a6!? e4 19.Ne1 ba6 20.Qa6+=) 18...Ne5= (18...fe5? 19.c6 bc6 20.Qc6+/-; worse 18...Be5 19.Nd4 Rfe8 20.a6+/-) 19.Nd4 Bd7 20.Qe2 Nc6 21.Nb5 (21.Bb2 Qe7=) 21...Be5 22.Rad1 a6 23.Nd6 (23.f4 ab5 24.fe5 Ne5=) 23...Bd6=+ 24.cd6 Na5 25.Nf3? (25.Qf3!?=+) 25...Nc4 (25...Bb5 26.Qd2 Bf1 27.Qa5-+) 26.Qa2-/+ a5 27.Nd4 (better 27.Rd3!?-/+) 27...b5-+ 28.Bc5 (28.Bc1 b4-+) 28...Rfc8 29.Ne6?? (29.Ba3-+) 29...Qe6 30.Bd4 b4 31.Rb1 (31.Qb1 Qf5 32.Qa1 a4-+) 31...a4 Black prepares the advance b3 32.Qa1 (32.Rbd1 Qd6 33.f3 Qc6-+) 32...b3 (32...Nd2!? 33.Rfd1 Nb1 34.Rb1 Qd6 35.Ba7-+) 33.Rfc1 a3 34.Rc4 dc4 35.Qa3 c3 (35...c3 36.h3 Qd5-+) 0-1. zembelek (2085) - amayak (2085), Rated Blitz game, lichess.org, 2013.

7.d4 Ne7 8.Nd2 0-0 9.c5 Bc7 10.Ngf3 Nd7 11.a4 Bf7 12.Rc1 e4 13.Ng1 cb5 (13...f5 14.Ne2=+) 14.ab5 b6 (14...f5!?=) 15.c6+= Nb8 16.Ra1 (16.Ba3 Re8+=) 16...f5 17.Nh3 Qd6 (17...a6 18.Be2+=) 18.Ng5 Bg6? (18...a5 19.Ba3 Qd8 20.Be2+/-) 19.h4 (better 19.Ba3 Qf6 20.Be7 Qe7 21.Qd5 Kh8 22.h4+-) 19...h6?? (19...a6 20.h5 Bf7 21.Ba3+/-) 20.Nh3 (better 20.Ba3 Qf6 21.Be7 Qe7 22.Qd5 Bf7 23.Nf7 Qf7 24.Bc4 Qd5 25.Bd5 Kh8 26.g4+-) 20...a6 21.Nf4 White prepares the advance h5 (worse 21.ba6 Nbc6 (21...Nec6? 22.Ba3 Qd8 23.Bf8 Kf8 24.Rc1+-; worse 21...Qc6 22.Ba3 Bd6 23.Bb5+/-) 22.Ba3 Qf6=) 21...ab5?? (better 21...Bf7+=) 22.Ra8+- Nbc6 (22...b4 23.Ng6 Qg6 24.Qb4 Nbc6 25.Rf8 Kf8 26.Qb5+-) 23.Rf8 Kf8 24.Ba3 (better 24.Bb5 Na5 25.Qc3 Bf7+-) 24...Qf6 (24...b4 25.Bb2+-) 25.h5 (25.Nd5 Bf7 26.Bb5 Na5 27.Nf6 Bb3 (27...Nb3?? 28.Nd7 Kg8 29.Be7+-) 28.Nh7 Kg8 29.Nb3 Nb3+-) 25...Be8 (25...Bf4 26.hg6 Bd6 27.Bb5 Qg6 28.Bc6 Ba3 29.Bd5 Qg2+-) 26.Nd5 Qf7 (26...Bf7 27.Bb5 (27.Nc7?! Bb3 28.Nb3 b4+=) 27...Na5 28.Qc3 Bd5 29.Qc7+-) 27.Bb5 (27.Bb5 Bd8 28.Qc4+-) 1-0. zembelek (2105) - amayak (2070), Rated Blitz game, lichess.org, 2013.

7.d4 Nh6 8.Nd2 (8.bc6 Nc6 9.Qb7 Ne7+=) 8...0-0 (8...Nd7 9.c5 Be7 10.Be2=) 9.c5 Be7 (9...Bc7 10.Ngf3=) 10.Ngf3 (10.bc6 Nc6 11.Qb7 Bd7+=) 10...e4 (better 10...Nd7!?=) 11.Ne4!+/- Qd7 (11...de4 12.Qe6 Double attack (12.Qe6 Pinning; 12.Qe6 Deflection; 12.Qe6 Decoy)) 12.Ned2 f5 13.a4 a6 (13...b6 14.Ne5 Qb7 15.Rc1 bc5 16.dc5+-) 14.Rb1 (14.Bd3 Bf6+-) 14...ab5+/- 15.ab5 Qc7 16.Bc3 (16.b6 Qd8+-) 16...b6 (16...f4 17.e4+/-) 17.cb6 Qb6 18.bc6 Qb3 19.Rb3 (19.Nb3 Nc6 20.Nc5 Bf7+-) 19...Nc6+/- 20.Bb5 Na5 21.Ba5 Ra5 22.0-0 (better 22.Ke2+/-) 22...Rb8?? (22...Ra2 23.Rfb1+/-) 23.Rfb1 (better 23.Bd7! Bd7 24.Rb8 Bf8+-) 23...Nf7 (23...Rc8 24.Bd3+/-) 24.Bc6 (better 24.Bd7! Rb3 25.Nb3+- (25.Be6 Rb1 26.Nb1 g6=)) 24...Rb3+/- 25.Rb3 Nd6 26.g3 Nc4 (26...Kf7 27.Rb6+/-) 27.Rb8 (27.Rb7 Nd2 28.Nd2 Kf7+/-) 27...Kf7 28.Bb5 Nd6 29.Bc6 Nc4 30.Kg2 g5 31.Bb5 Nd6 (31...Bf6 32.Rb7 Kg8 33.Nb3+=) 32.Ne5 Kf6 33.Bd7 Ra2 34.Be6 (34.Nb3 Bd7 35.Nd7 Kg7+/-) 34...Ke6+= 35.Nb3 (35.Nf1+=) 35...Ne4 (35...Nc4!?=) 36.Nd3 (36.Rb6 Bd6 37.Nc5 Nc5 38.dc5 Ke5 39.Rd6 Rc2+/-) 36...g4 37.Rb6 Kf7 38.Rb5 Nc3 39.Ra5 Rc2 (39...Ra5 40.Na5 Kf6 41.h3+/-) 40.Ne5 Kf8 41.Ra8 Kg7 42.Ra7 Kf8 43.Nc5 (43.Rc7 Bd6 44.Rf7 Ke8 45.Rf5 Be5 46.Re5 Kf7+-) 43...Bc5 44.dc5 Nd1 45.Rf7 (45.Kg1 Nf2 46.Rf7 Ke8 47.Rf5 Ne4 48.Ng4 Rc5+/-) 45...Ke8 46.Kg1 Rc1 (better 46...Nf2 47.Rf5 Ne4+/-) 47.Nd3?? (better 47.Kf1!? Nc3 48.Kg2+/-) 47...Rc3 (better 47...Ra1 48.Ra7 Ra7 49.Kf1-+) 48.Nf4?? (48.Ne5 Rc1 49.Kf1 Nc3 50.Kg2 Ne2+/-) 48...Rc1 (better 48...Kf7!? 49.Ne2 Rc5 50.Kf1-+) 49.Nd3 Rc3 (better 49...Ra1 50.Ra7 Ra7-+) 50.Rf5 (50.Ne5 Rc1 51.Kf1 Nc3 52.Kg2+/-) 50...Rd3-/+ 51.c6 Kd8 52.Rf7 (52.Rf4 h5 53.Kf1 Nc3-+) 52...Nc3 (52...Rd2!? 53.Kf1 Rc2 54.e4 Rc6 55.ed5-+) 53.Rh7-/+ Ne4 54.Rh5 (54.h4 gh3! 55.Rh3 Kc7-/+) 54...Kc7 (54...Rd1 55.Kg2-+) 55.Kg2 (better 55.h4!?-/+) 55...Kc6 56.h4?! (56.Rf5 Rd2 57.Rf4-+) 56...Rd2 (better 56...gh3 57.Rh3 Rd2-+) 57.Rf5-/+ Kd6 58.h5 Ke6 59.Rf4 (better 59.Rf8!?-/+) 59...Nf6 60.Rg4?? (60.h6 Rc2 61.Kf1-+) 60...Ng4 61.Kf3 (61.Kf1 Rf2 62.Ke1 Rh2-+) 61...Nf2 (61...Kf5 62.e4 de4 63.Kg2 Rf2 64.Kg1 e3 65.Kh1 e2 66.h6 e1Q) 62.g4 (62.Kf4-+) 62...Ne4 63.g5 Rh2 (63...Kf5 64.g6 Rf2) 64.Kg4-+ Rg2 65.Kf4 Rg5 66.h6 Rh5 67.Kg4 Rh6 68.Kf3 Rf6 69.Kg4 Rg6 (69...Rf2 70.Kh4 Kf5 71.Kh3 Rd2 72.Kh4 Rh2) 70.Kf4 Kf6 (70...Rg2 71.Kf3 Rf2 72.Kg4 Kf7 73.Kh4 Kf6 74.Kg4 Kg6 75.Kh4 Kf5 76.Kh3 Rd2 77.Kh4 Rh2) 71.Kf3 Rg3 72.Ke2 Rg2 73.Kf3 Rf2 74.Kg4 Ke5 75.Kh4 Rg2 (75...Kf5 76.Kh3 Rd2 77.Kh4 Rh2) 76.Kh3 Rg8 77.Kh4 d4 78.ed4 (78.Kh3 de3 79.Kh4 e2 80.Kh5 e1Q 81.Kh6 Qh4) 78...Kf4 79.Kh5 Nf6 80.Kh6 Kf5 81.d5 Rg6 0-1. zembelek (2160) - amayak (2120), Rated Blitz game, lichess.org, 2013.

6.bc6 bc6

7.Nc3 Be6 8.cd5 cd5 9.Qa4 Kf7 10.Nf3+=.

7.Nc3 Be6 8.cd5 cd5 9.Bb5 Nd7 10.Rb1=.

7.Nc3 Be6 8.cd5 cd5 9.d4=.

7.Nc3 Ne7 8.Qh5 g6 9.Qf3 0-0 (9...Bf5 10.cd5 cd5 11.Nd5+=) 10.cd5 Bb7 11.dc6 Bc6 (11...Nbc6 12.Rb1+=) 12.Qg4 (12.Bc4 Kg7 13.e4 f5+/–) 12...Bd7 (12...Kg7 13.Rb1+=) 13.Bc4 (13.Qc4 Kg7+/–) 13...Kh8 (13...Kg7 14.Qf3 Nbc6 15.Ne4+=) 14.Qe2 Nbc6 15.Nf3 Rb8 (15...Bf5 16.Rd1+/–) 16.d3 (16.Rb1 Na5+/–) 16...Bg4 (16...Na5 17.0-0+=) 17.0-0 (17.Rb1 Qa5 18.0-0 Bf3 19.gf3 Bb4+/–) 17...Bf3+= 18.gf3 Qd7 19.Ne4 Rb6 (19...Na5 20.Rfd1+=) 20.a4 (20.Rab1 Na5+/–) 20...Na5 21.Bb5 Qe6 (21...Nac6 22.Rfc1+/–) 22.Nd6 Qd6 (22...Rd6 23.Ba3 Rb6 24.Qa2+/–) 23.Ba3 Qc7 (23...Qe6 24.Qa2 Qa2 25.Ra2+/–) 24.Rac1 (24.Bb4 Nac6 25.Rfc1 Rc8+-) 24...Qb7 (24...Qd8!?+/–) 25.Bb4+- a6 (25...Nb3 26.Rc3 a6 27.Rb3 ab5 28.Bc5+-) 26.Ba5 ab5 27.Bb6 Qb6 28.Qc2 (28.ab5 Qb5 29.Rc4 Nd5+-) 28...Nf5 (28...Qb7 29.ab5 Qb5 30.Rfd1+-) 29.Qb3 Rb8 (29...Qb7 30.Qb4 Rb8 31.Qb5 Qb5 32.ab5 Rb5 33.Rc7+-) 30.Qf7 ba4 (30...Nh6 31.Qd7 Rb7 32.Rc8 Ng8+-) 31.Rc7 (31.Rc7 Qc7 32.Qc7+-) 1–0. pcmvr (2100) – leen (2200), net–chess.com, 2006.

7.Nc3 Ne7 8.Qh5 g6 9.Qf3 0-0 (9...Bf5!?=) 10.cd5+= Bb7 11.dc6 Nbc6 12.Qd1 (12.Rb1 Kg7+=) 12...Qd7 (12...Rc8 13.Rb1 Kg7 14.Nf3+=) 13.Nf3 (13.Ne4 Rab8+=) Nb4. pcmvr (2225) – leen (2170), net–chess.com, 2006.

7.Nc3 Ne7 8.Qh5 g6 9.Qf3 Bf5 10.cd5 e4 (10...Qb6 11.Na4 Qb4–/+) 11.Ne4+/– Be4 (better is 11...Nd5!? 12.Bc4 Be5+/–) 12.Qe4+- cd5 (12...0-0 13.dc6 Nbc6 14.Bc4 Kg7 15.Rb1+-) 13.Bb5 Kf7 (13...Nd7 14.Qe6 Be5 15.Be5 fe5 16.Nf3+/–) 14.Qf3 f5 15.g4 (15.Bh8 Qh8 16.Rb1 Qd8+-) 15...Rf8 (15...Rg8 16.gf5 gf5 17.Qh5 Ke6 18.Nf3+- (18.Qh7 Nbc6 19.Nf3 Qb6 20.Bc6 Qb2 21.Nd4 Kf6 22.Bd5 Qa1 23.Ke2 Qd4 24.Qf7 Kg5 25.ed4 Rae8+-)) 16.gf5 Kg8 (16...gf5 17.Qh5 Kg8+-) 17.f6 Nf5 (17...Qb6 18.fe7 Rf3 19.e8Q Rf8 20.Qe6 Rf7 21.Qd5 Nc6 22.Qc6 Rb8 23.Qb6 Rb6+- (23...ab6?? 24.Bc4+-)) 18.Qd5 Rf7 19.Qa8 Qb6 20.Qd5 Bc5 (20...Nh6 21.Rc1 Qd8 22.Be5+-) 21.Be8 (21.Be8 Nh6 22.Rc1 Qb2 23.Bf7 Nf7 24.Qc5+-) 1–0. pcmvr (2225) – leen (2220), net–chess.com, 2006.

7.d4 Ne7+= 8.de5 fe5 9.Nf3 (9.Nc3 Qa5+=) 9...e4 (9...Nd7 10.cd5 cd5 11.Nc3+=) 10.Ng5 (10.Nd4 Qb6 11.Bc3 0-0=) 10...0-0+= 11.cd5 Nf5?? (better is 11...cd5!? 12.Qd4 Rf6 13.Ne4 de4 14.Bc4 Kf8 15.Qe4 Bb4 16.Ke2 Rg6 17.Qf3 Bf5+=) 12.Ne4 (better is 12.h4!? Qa5 13.Nc3+/–) 12...Ne3+= 13.Qb3 Bf5 (13...Nf1 14.Kf1 Rf7=) 14.Nd6?? (14.dc6 Kh8 A) worse is 15.fe3 Be4 16.Nd2 Nc6–/+ (16...Bc6?! 17.0-0-0 Qe7 18.Nc4+=); B) 15.Qe3?! Be4 16.Nd2 Bc6=; C) 15.Nbd2 Be4 C1) worse is 16.fe3 Nc6 (16...Bc6?! 17.0-0-0 Nd7 18.Qe6=) 17.0-0-0 Rc8 18.Ne4 Na5 19.Kb1 Nb3 20.Nd6 Nc5–/+; C2) 16.Ne4 Bb4 17.Bc3+=) 14...Nc2–+ 15.Kd1 Qd6 16.Nd2 (16.Na3 Na1 17.Ba1 cd5–+) 16...Na1 17.Ba1 cd5 18.Be2 (18.Qg3 Qe7 19.Bb5 Rc8–+) 18...Nc6 19.Bf3? (19.Qg3 Qd7 20.Nb3–+) 19...Nb4 20.Qc3 (20.Be4 Rac8 21.Bf5 Rf5 22.Bb2–+) 20...Bc2 21.Ke1 Qe7 (21...Rae8 22.Ne4 Rf7 23.Kf1 Be4 24.Be4 de4 25.Qd4 Qa6 26.Kg1–+) 22.Kf1 (22.Qe3 Rae8 23.Nc4–+) 22...Bd3 (22...Bd3 23.Qd3 Nd3 24.Bd5 Kh8–+) 0–1. Brazhnikov,Vladimir – Epifantsev,Igor, Novokuznetsk Winter Open, 2010.

7.cd5 cd5 8.Nc3 Ne7 9.Qh5+= g6 10.Qf3 0-0 11.Nd5+/– f5?? 12.Ne7+- Qe7 13.Qa8 Bb7 14.Qa7 Nc6 15.Qa4 Nb4 16.Qb3 Bd5 17.Bc4 Bc4 18.Qc4 Kg7 19.a3 (19.a3 Rc8 20.Qc8 (20.ab4 Rc4 21.Bc3 Bb4–/+) 20...Nd3 21.Kf1 Nb2 22.Rb1 Ba3 23.Qc3+-) 1–0. spanish – Canyonlands, Live Game Caissa's Web, 2005.

6.Nf3 Ne7

7.a4 Be6 8.cd5 cd5 9.Nc3 Nd7 10.Be2 0-0 11.0-0 h6 12.a5 Rc8 13.Ba3 Qc7?? (better is 13...Ba3 14.Ra3 Qc7=) 14.b6+- Qb8 (14...Qd8 15.Bd6 ab6 16.Nh4 ba5 17.Be7 Qe7 18.Ng6+- (18.Ra5?! Qd8 19.Rb5 f5+-)) 15.ba7 (15.ba7 Qa7 16.Bd6+-) 1–0. pierre – Toren1, ChessHere.com, 2006.

7.Nc3 0-0 8.Qb3 Be6 9.d4 e4 (9...Nd7 10.Rb1=) 10.Nd2 f5 11.c5 Bc7 12.a4 Qe8 (12...Nd7 13.Be2=) 13.h3 (13.bc6 Nbc6 (13...Qc6?? 14.Bb5+-; 13...bc6? 14.Qb7+-) 14.Qb7 Ba5=) 13...b6 (13...Qd7 14.Be2=+) 14.Ba3= f4 (14...Qd7 15.bc6 Nbc6 16.cb6 ab6 17.Bb5=) 15.cb6 Bb6 (15...ab6 16.bc6 fe3 17.fe3 Nbc6 18.Nce4 Na5=) 16.Be7?? (better 16.Nce4 fe3 17.fe3+=) 16...Qe7-/+ 17.a5 Bc7 18.Be2 fe3 19.fe3 Qg5 (19...cb5 20.Nb5 Nc6 21.Nc7 Qc7 22.Kd1-/+) 20.Nce4=+ de4?? (better 20...Qg2 21.Rf1 cb5=+) 21.Qe6+- Kh8 22.Nf1?? (better 22.Qe4 Nd7 23.bc6+- (23.Qc6 Qe3 24.b6 Rae8-/+)) 22...cb5?? (22...Qg2 23.Qe7 Na6 24.ba6 Rf2-+) 23.Qe4+/- Nd7 (23...Na6 24.h4 Qh6 25.Bb5 Nb4+/-) 24.h4 (24.Qb7 Qd8 25.Qb5 a6+=) 24...Qh6? (better 24...Qd8!?=) 25.Bb5 Nf6 (25...Qd6 26.Bd3 Qb4 27.Kd1+=) 26.Qc6 (26.Qf5!? Ng8 27.Qc5+/-) 26...Rac8+/- 27.Rc1?? (better 27.Qb7+/-) 27...Bg3!! 28.Ke2 (28.Ng3 Rc6 Discovered attack) 28...Rc6 29.Bc6 Qh5 30.Kd3 Qg6 31.e4 (31.Kd2 Bd6 32.Rh3 Rb8-+) 31...Bf4 (31...Ng4 32.Ng3 Nf2 33.Kc2 Qc6 34.Kd2 Qh6 35.Ke2 Qa6 36.Ke1 Nh1 37.Nf5-+) 32.Rc2 Rc8 33.h5 Qg4 34.Ne3 (34.Nd2 Bd2 35.e5 Bg5-+) 34...Be3 35.Ke3 (35.Rb1-+) 35...Qg3 36.Kd2 Qg2 37.Kc1 Qh1 38.Kb2 Rb8 39.Kc3 (39.Bb7 Rb7 40.Kc3 Qf3 41.Kc4 Qb3 42.Kc5 Ne4 43.Kc6 Qb5) 39...Qf3 40.Kc4 (40.Kd2 Rb3 41.Rc4 Qf2 42.Kc1 Rb2 43.e5 Qd2) 40...Qb3 41.Kc5 Qb4 0-1. zembelek (2100) - amayak (2050), Rated Blitz game, lichess.org, 2013.

7.d4 ed4 8.Bd4 c5 9.Bc3 Be6 10.Bd3 a6 11.cd5=; B) 7.cd5 cd5 8.Be2 (8.d4 e4 9.Nfd2 0-0 10.Qb3 f5 11.Ba3=; 8.Nc3 0-0 9.d4 e4 10.Nd2 Be6 11.Qb3=; 8.Ba3 Ba3 9.Na3 Bg4 10.h3 Bf3 11.Qf3+=) 8...0-0 9.d4 e4 10.Nfd2 Qe8 11.Ba3=.

7.d4 ed4 8.Nd4= 0-0 (8...a6 9.Nc3 ab5 10.cd5=) 9.Nc3+= a6 10.a4 (10.cd5 A) 10...Nd5? 11.bc6 Nc3 12.Qb3 (12.Bc3?! Nc6 13.Nc6 bc6+=) 12...Nd5 13.cb7 (13.Qd5?! Kh8 14.0-0-0 bc6 15.Nc6 Nc6 16.Qd6 Bf5+/–) 13...Bb7 14.Qb7 Qa5 15.Kd1+-; B) worse is 10...ab5 11.Qb3 Kh8 12.Rd1+=; C) 10...cd5 11.Qb3 Qa5+=) 10...ab5= 11.ab5 Ra1 12.Qa1 c5 13.Nf3 Be6 14.Nd5 (better is 14.Qa2!?+=) 14...Nd5= 15.cd5 Bd5 16.Be2 Qc7 17.h3 Nd7 18.0-0 Nb6 19.Rc1 Ra8 20.Qb1 Ra2 (20...Qd7 21.Rd1 Bc4 22.Bc4 Nc4 23.Bc3+=) 21.Nd2 Bh2 22.Kf1 Be5 23.Be5 Qe5 (worse is 23...fe5 24.Nb3 Ra4 25.Nc5+/–) 24.Nf3 Qe7 25.Rc2 (25.e4 Qe4 26.Qe4 Be4 27.Rc5 Ra1 28.Ne1 Bg2 29.Kg2 Re1=) 25...Qe4 26.Rc1 Qb1 27.Rb1 Na4 28.Rc1 b6 29.e4 Be6 30.Ke1 Nb2 31.Rc2 Kf7 32.e5 (32.Nh4!?+=) 32...h6–/+ 33.ef6 Kf6 34.Nh2 Ke5 35.Ng4 (35.Nf3 Kd6–/+) 35...Kd4 (35...Bg4 36.hg4 Kd4–+) 36.Ne3–/+ Bb3 ½–½. Rohde_Jensen,Kristian – Hanison,Bernard, corr ICCF TT–4–90, 1991.

7.d4 ed4 8.Nd4= a6 9.Nc3 ab5 10.cd5=.

7.d4 ed4 8.Nd4 c5 9.Nf3 Be6 10.Nc3 dc4 11.Qa4=.

7.d4 Nd7?! 8.de5 fe5 9.cd5 cd5 10.Be2 0-0 idea a3, g3 –+. Golyak – Shadursky, corr 1971.

7.d4 Bg4 8.Be2= e4 9.Nfd2 Be2 10.Qe2 0-0 11.c5 Bc7 12.a4 f5 13.0-0 f4 14.Qg4 (14.ef4 Bf4 15.g3 Bh6=+) 14...Ng6 (14...Rf6 15.g3-/+) 15.Nc3=+ Kh8 (15...Qd7 16.Qd7 Nd7 17.Ba3=+) 16.g3 (16.Qh3 Nh4=) 16...f3=+ 17.Ra3 Nd7 18.Rb3 Nf6 19.Qe6 Re8 20.Qh3 a6 21.b6 (21.bc6 bc6 22.Rb1 Nf8-/+) 21...Bb8-/+ 22.a5 Qe7 23.Na2 Kg8 24.Nb4 Kf7 25.Re1 Rh8 26.Qf5 h5 27.Rc3 Rg8 (27...Qe8 28.h4-/+) 28.h3. onur604 (2320) - Matvienko_Vitaliy (2250), Casual Rapid game, lichess.org, 2021.

7.d4 e4

8.Nfd2 Be6 9.bc6 (9.c5 Bc7=) 9...bc6 10.Be2 Nd7 11.cd5 cd5 12.Ba3 Ba3 13.Na3 f5 14.Nb5 0-0 15.Rc1 Bf7 (15...f4 16.Nc7 fe3 17.fe3+/–) 16.0-0 Nf6 17.Rc5 (17.a4 a6 18.Nc7 Rc8 19.Na6 Rc1 20.Qc1 f4+/–) 17...g5 (17...Ng6 18.Rc7+=) 18.Qc2 f4 19.ef4 (19.a4 Nf5 20.ef4 a6+=) 19...gf4 20.Rc1 Bh5? (20...e3!? 21.fe3 fe3+=) 21.Bh5+/– Nh5 22.Nc7 f3 (22...e3 23.fe3 fe3 24.Nf3+-) 23.Ne4! de4? A pinning theme (23...Nf4 24.Ng5 Ne2 25.Kh1 Rf5 26.Nf3 Nc1 27.Na8 Na2+-) 24.Rh5 (24.Na8?! Nf4 25.gf3 Qa8 26.Qe4 Ned5+/–) 24...Rc8 25.Qe4 Threatening mate: Qxh7. 25...Rf7 26.Rhc5 Qd7 (26...fg2 27.Ne6 (27.Kg2?! Qd7+-) 27...Rc5 28.Rc5+-) 27.Ne6 Re8 28.Ng5 (28.Ng5 Rg7 29.Rc7+-) 1–0. Oestblom,Stig – Moen,Kjetil, corr NC II 1–07, 1992.

8.Nfd2 0-0

9.Qb3 Be6 10.c5+/– Bc7 11.Ne4 Qd7 12.Ned2 a6 13.b6 Bd8 14.Bd3 Ng6 15.Nc3 f5 16.Qc2 Bg5 17.f4 Be7 18.Nf3 Qe8 19.Ne5 Ne5 20.fe5 (20.de5?! Bc5 21.Nd5 Bd5 22.Qc5 Nd7+=) 20...Nd7 21.0-0 g6 22.Ne2 Bg5 23.Bc1 Bh6 24.Bd2 Bg5 25.Rf2 Qe7 26.Raf1 Rf7 27.Nf4 Bf4 28.Rf4 Raf8 29.Be1 Nb8 30.Kh1 Qd7 31.Bh4 h6 32.Bf6 Qc8 33.g4! Nd7 (33...fg4 34.Bg6 Pinning (34.Bg6 Deflection)) 34.gf5 gf5 (34...Nf6 35.fe6 Qe6 36.Bg6 Rd7 37.ef6 Qh3+-) 35.Rg1 Kh7 (35...Rg7 36.Rg7 Kh8 37.Rg8 Kg8 38.Qg2 Kf7 39.Qg7 Ke8 40.Qe7) 36.Bf5 Bf5 37.Qf5 1–0. Boysan,Ferit – Walny,Yair, Internet Section, 2003.

9.Qb3 Be6 10.c5 Bc7 11.Ne4 Re8 12.Ng3 f5 13.Nd2 (13.Bd3 Nd7+/-) 13...f4+= Black gets strong initiative 14.ef4 Bf4 15.Nf3 Bg4 16.Be2 Bf3 (16...Ng6 17.Kd1+=) 17.Bf3 (17.gf3?! Ng6=) 17...Nf5 18.Kf1 Qf6? (better 18...Ne7!?+/-) 19.Bd5! Kh8 (19...cd5 20.Qd5 Theme: Double Attack) 20.Nf5 Qf5 21.bc6 Nc6 22.g3?? (better 22.Rd1+-) 22...Be3-+ Do you see the mate threat? 23.f3?? (23.Kg2 Na5 24.Qe3 Re3 25.Bb7-+) 23...Nd4 (better 23...Qh3 24.Ke2 Qg2 25.Kd3 Qd2 26.Kc4 Na5 27.Kb5 Nb3 28.ab3 Qb2-+) 24.Bd4?? (better 24.g4 Qg5 25.Bd4 Bd4 26.Rd1 Bc5 27.Qb5=+) 24...Bd4 (24...Qh3 25.Ke1 Bd4 26.Be4 Qg2-+) 25.Re1 (25.g4 Qe5 26.Kg2 Ba1 27.Bb7-+) 25...Re1 (25...Qh3) 26.Ke1-/+ Re8 27.Kf1?? (27.Kd1 Rd8 28.Re1 g6-/+ (28...Qd5?? 29.Qd5 Rg8 30.Qd4+-)) 27...Re3 (27...Qh3) 28.Qe3?? (better 28.g4 Rb3 29.gf5-/+) 28...Be3-+ 29.Be4 Qc5 (better 29...Qh3!? 30.Ke2 Qg2 31.Ke3 Qh1 32.h4-+) 30.Kg2 Qc3 31.Rb1 (31.Rd1 g6 32.Kh3 Qc8 33.g4 Bf4-+) 31...g6 (31...Qd2 32.Kh3-+) 32.Rb7 (32.Kh3 Qd2 33.Bb7 Qa2-+) 32...Qd2 33.Kh3 h5 (better 33...Bg1 34.Kg4-+) 34.Rb8 (34.Bg6 Bg1 35.Rh7 Kg8 36.Rh5 Qh2 37.Kg4 Qa2 38.Re5-+) 34...Kg7 35.Re8 (35.Rb7 Kf6 36.Rc7-+) 35...Qd7 (35...Bg1 36.Rg8 Kg8 37.Bd5 Kg7 38.Kh4 Qh2 39.Kg5 Qg3) 36.g4-+ Qe8 37.gh5 Qe5 (37...Qe6 38.Kg3 Qd6 39.Kg4 gh5 40.Kh5 Qf4 41.h4 Bf2 42.a3 Qh4) 38.hg6 (38.Bg6 Bg1 39.Be4 Kf6 40.Kg4 Bh2 41.h6 Qf4 42.Kh5 Qg5) 38...Qg5 (38...Bf4 39.Kg2 Qb2 40.Kh3 Qh2 41.Kg4 Qg3 42.Kf5 Bc7 43.Ke6 Qd6 44.Kf5 Qg6) 39.Ba8 Bf4 40.Bb7 (40.Be4 Qh5 41.Kg2 Qh2 42.Kf1 Bg3 43.f4 Qf2) 40...Kg6 (40...Qh5 41.Kg2 Qh2 42.Kf1 Bg3 43.f4 Qf2) 41.Bc6 (41.Be4 Kh5 42.a4 Qg1 43.Bg6 Kg5 44.Be4 Qh2) 41...Kh5 (41...Qg1 42.Be4 Kg5 43.a3 Qh2) 42.Be8 Kh6 43.Bc6 (43.a3 Qg1 44.Bc6 Bh2 45.f4 Qg3) 43...Qc5 (43...Qh5 44.Kg2 Qh2 45.Kf1 Bg3 46.f4 Qf2) 44.Kg4 (44.Kg2 Qc2 45.Kf1 Be3 46.Ke1 Qd2 47.Kf1 Qf2) 44...Qf2 (44...Bh2 45.Kh3 Qg1 46.f4 Qg3) 45.Kf4-+ (45.Kf4 Qc5 46.Ba8 Qf8 47.Kg4 Qa8 48.a3-+). zembelek (2030) - jiktak (2035), Rated Blitz game, lichess.org, 2014.

9.Qb3 f5!?=.

9.Nc3 Nd7 10.c5 Bc7 11.Qh5=.

9.c5 Bc7 10.Qh5=.

9.Nc3 f5

10.Rb1 Be6 11.Qb3=.

10.bc6 bc6 11.c5 Bc7=.

10.g3 Ng6 11.cd5+= (11.Qb3 Be6 12.c5 (12.bc6 Nc6 13.cd5 Na5 14.Qd1 Bd7 15.g4 f4=) 12...Bc7 (12...Be7 13.bc6 Nc6 14.Qb7 Rc8 15.Qa6 Qc7+/–) 13.bc6 Nc6 14.Qb7 Nge7 15.Qa6 Rb8+=) 11...cb5 (11...cd5 12.Nd5 Be6 13.Bc4 Kh8 14.Rc1 a6 15.Qb3 ab5+=) 12.Bb5 (12.Nb5 Bb4+= 13.Bc3 Bc3 14.Nc3 b6 15.Rc1 a6+/–) 12...Bb4 (12...a6 13.Be2= b5 14.Qb3 Nd7 15.Ba3 Nf6+=) 13.a4 (13.Qb3 Bd6+/– 14.Nc4 Rf6 15.Nd6 Rd6+/–) 13...Ne7 (13...a6!? 14.Bc4 Nd7+= 15.Qb3 Qa5+/–) 14.Qb3+/– Bc3 (14...Qd6!?+/– 15.Ba3 Ba3+/–) 15.d6+- (15.Qc3?! Nd5 (15...Qd5?? 16.Bc4+-) 16.Qc2 Be6+=) 15...Kh8 16.de7 (16.Bc3?! Qd6 17.Bb4 Qd8+=) 16...Bd2 17.Kd2 Qe7 18.Ba3 Qf7 19.Bc4 Qf6 20.Bf8 Qf8 21.Rac1 Nc6 22.Qc3 (22.Rhd1 Na5 23.Qb5 Qd8+-) 22...Qd6 23.h4 Be6 24.h5 h6 25.Be6 (25.Rhd1 Rc8 26.Be6 Qe6+-) 25...Qe6 26.Qc4 Qd7 27.Ke2 Rd8 28.Rb1 b6 29.Rhc1 Ne7 30.Qf7 Ng8? (better is 30...Rc8+-) 31.Rc7 Qf7 32.Rf7 1–0. Wall,Bill – Pennell,Gary, Taylorsville, NC, 1975.

10.g3 Nd7

11.Qb3 Nf6 12.a4 Be6 13.Ba3 (13.c5 Bc7= 14.Be2 Qd7 (14...Rb8 15.0-0 Qd7 16.a5 cb5 17.Nb5 Nc6=) 15.0-0 Ba5 16.Rab1 Rae8 17.f3 Rf7=) 13...Kh8 (13...Ba3 14.Ra3 Rc8 (14...Rf7 15.c5= b6 16.Qb4 Nd7 17.cb6 Qb6=; 14...b6 15.cd5 Ned5 16.Bc4 Qd6 17.0-0 Rac8=) 15.c5 b6 16.Qb4 bc5 17.dc5 Nd7=) 14.Bd6= Qd6 15.c5 Qc7 (15...Qd7 16.a5 Rad8 17.Be2 cb5=) 16.b6 (16.Rb1 Rab8= (16...b6 17.cb6 ab6=) 17.Be2 b6=) 16...Qd7 (16...ab6 17.cb6 Qd8 18.a5+=) 17.ba7 (17.Be2 ab6=) 17...Ra7 18.h4 Bf7 19.a5 Rfa8 20.Rb1 Ra5 21.Qb7 Qb7 (21...Qe8 22.Qc7+=) 22.Rb7= R5a7 23.Rb6 Nd7 24.Rb2 Bh5 ½–½. Sokolski,Alexey – Golovko,N, corr URS–ch05, 1960.

11.a4 Nf6

12.Ba3 Ba3 13.Ra3 b6 14.cd5 cd5 15.a5= Be6 16.Be2 Rc8 =.

12.Ba3 Ba3 13.Ra3 dc4 14.Bc4 Ned5+=. Sokolski.

12.Ba3 Ba3 13.Ra3 Be6 14.c5 Qa5 15.Qb3 Rae8 16.Be2 Rd8 =.

12.Ba3 dc4 13.a5 Ned5 (13...Qa5 Deflection from d6 14.Bd6 Discovered attack) 14.Bc4 (14.Bd6 Qd6 15.Nc4 Qb4–+) 14...Ba3 15.Ra3 Qd6 (15...cb5 16.Nb5 Be6 17.a6+=) 16.Qb3 (16.bc6 Qc6 17.Nd5 Nd5 18.Bd5 Qd5=) 16...Be6+= 17.bc6 (17.a6 b6+=) 17...Qc6 Black creates threats along the open c–file 18.Na4 (18.Nd5 Nd5 19.0-0 Rac8=) 18...Bf7 (18...Rac8 19.Nc5 Rf7 20.Ne6 Qe6 21.0-0+=) 19.Nc5= b6 20.ab6 (20.Qa4 Qa4 21.Na4 Rfc8+=) 20...ab6 (20...Nb6?! 21.Bf7 Rf7 22.Qe6 Qe6 23.Ne6=) 21.Na6 Nc7 (21...Rfc8 22.0-0+=) 22.Nc7 (22.Nb4 Qd7=) 22...Ra3+= 23.Qa3 Bc4 24.Qc3 (24.Qe7 Bd5 25.0-0 Rc8 26.Nd5 Nd5+=) 24...Qc7 (24...b5 25.Qa5–/+) 25.Qc4 Qc4 26.Nc4 Rc8 27.Nb2 Rc2 28.Nd1 b5 29.0-0 b4 30.f3 (30.Kg2 b3 31.Re1 b2 32.Nb2 Rb2–+) 30...g6 (30...Rd2 31.fe4 Ne4 32.g4 fg4 33.Re1–+) 31.h3 (31.Rf2 Rc1 32.Rf1 ef3–+) 31...b3 32.g4 fg4 33.fg4 Kg7 34.Rf2 Rc1 35.Rd2 (35.Rf1 Nd5 36.Kf2 b2 37.Nb2 Rc2 38.Kg3 Rb2–+) 35...Nd5 (better is 35...b2!? 36.Rb2 Rd1 37.Kf2 g5–+) 36.Kf2–/+ Kf6 37.Kg3 (37.Ke2 g5–/+) 37...Rc2 (37...g5 38.Kf2–/+) 38.Rf2 (38.Nf2 Nc3 (38...Rd2?! 39.Ne4 Ke6 40.Nd2+=; 38...Ne3 39.Ne4 Ke6 40.Kf4–+) 39.g5 Kg5–+) 38...Rf2 (38...Ke6 39.g5–/+) 39.Kf2 Kg5 (39...g5 40.Nb2–/+) 40.Kg3 (better is 40.Ke2–/+) 40...Kf6 (40...h6 41.Nf2 Nc3 42.h4 Kf6 43.Kf4–/+) 41.Kf2 h6 (41...g5 42.Nb2–/+) 42.h4 (42.Nb2 Ke6–/+) 42...Ke6 (42...h5 43.g5 Kf5 44.Ke2–/+) 43.Nb2 h5 44.Na4 (44.g5 Kf5 45.Ke2 Kg4–+) 44...Ke7 45.g5 Ke6?? (better is 45...Nb4+=) 46.Nc5+/– Kf5 (46...Kd6 47.Nb3 Ke7 48.Nc5+-) 47.Nb3 Kg4 48.Nc5 Nc3 49.Ke1 Kh4 50.Kd2 Nd5? (50...Nb1 51.Kc2 Na3 52.Kb3 Nb1 53.Ne4 Kg4+-) 51.Ne4+/– Ne7 52.Kd3 Kg4 (52...Nd5 53.Ke2+/–) 53.d5+- Kf5 54.Kd4 Nc8 55.d6 Ke6 56.Kc5 h4 57.Kc6 Na7 (57...h3 58.Nc5 Ke5 59.Nd3 Ke6 60.Nf4 Kf7 61.Nh3+-) 58.Kb6 Nc8 59.Kc7 Nd6 60.Nd6 Ke5 (60...h3 61.e4+-) 61.Nc4 (61.Kc6 h3 62.e4 h2–+) 61...Ke4 (61...Kf5 62.Kd6+-) 62.Kd6 h3 63.Ne5 ½–½. Waibel,Ulrich – Scammon,Craig, compuserve, 1995.

12.Ba3 c5 13.dc5 Be5 14.Rc1 Bc3 15.Rc3 d4 16.Rb3 d3 +=.

12.Ba3 Bc7 13.a5 (13.bc6 bc6 A) 14.Rc1 Be6= (14...Rf7 15.Be2 Be6 16.0-0 Rb8=) 15.cd5 Nfd5 16.Nd5 cd5=; B) 14.Rb1 Rb8 15.Rb8 Bb8 16.Be2 Be6=; 13.Rb1 Be6 (13...Bd7 14.bc6 bc6 15.Be2 Be6 16.0-0 Rb8=) 14.bc6 bc6 15.Be2 dc4 16.Nc4 Nfd5=; 13.Rc1 Be6 (13...Rf7 14.bc6 bc6 15.Be2 Be6 16.0-0 Rb8=) 14.bc6 bc6 15.cd5 Nfd5 16.Nd5 cd5=; 13.cd5 Nfd5 (13...cd5 14.Bg2 Ba5 15.Rc1 a6 16.0-0 ab5=) 14.bc6 bc6 15.Nd5 cd5 16.Rb1 Bd6=; 13.Bc5 Ba5 (13...Bb6 14.Bb4 a5 15.Be7 Qe7 16.c5 Bd8=) 14.Rc1 cb5 15.ab5 Be6 16.Be2 Rc8+=) 13...a6 (13...cb5 14.cb5 Bd7 15.Be2= Rf7 16.Bb4 b6=) 14.b6= Bb8 15.Nb3 (15.cd5 Nfd5 16.Bc4 Be6=) 15...Rf7 16.Nc5 (16.Rc1 Be6=) 16...g5 (16...Bd6 17.cd5 cd5 18.Rc1=) 17.Qb3 Bd6 18.0-0-0 h6 19.cd5 (19.h3 Bc5 20.Bc5 Be6+=) 19...cd5= (worse is 19...Nfd5 20.Bc4+/–) 20.h4 g4 21.Rd2 Rb8 22.Rc2 Bc5 23.Bc5 Nc6 24.Qa3 Bd7 25.Kb2 Rc8 26.Be2 Be6 27.Na2 Ne8 28.Rhc1 Nb8 29.Bb4 (29.Kb1 Nc6+=) 29...Rc2 (29...Nc6 30.Qa4=) 30.Rc2+= Qd7 31.Nc1 Nc6 32.Nb3 Nb4 33.Qb4 Qd6 (33...Nd6 34.Nc5 Qe7 35.Kb3+=) 34.Qa3 (34.Qd6 Nd6 35.Nc5 Bc8+/–) 34...Qa3 35.Ka3 Nd6 36.Nc5 Rf8?? (36...Bc8 37.Kb4+/–) 37.Kb4 (better is 37.Ne6 Rf7+-) 37...Kf7?? (37...Rc8 38.Rc3 Kf7 39.Na4+/–) 38.Na6 (better is 38.Nb7 Nb7 39.Rc7 Kf6 40.Rb7+-) 38...ba6+/– 39.Ba6 Ke8 (39...Ke7 40.Rc7 Bd7 41.Kc5+/–) 40.Rc6 Kd7 (better is 40...Ke7 41.Kc5 Ra8 42.Rc7 Bd7+-) 41.Kc5 (41.Kc5 Nc8 42.Rc7 Kd8 43.Rh7 Nb6 44.ab6+-) 1–0. Sokolski,Alexey – Zhukhovitsky, Kiev, 1945.

12.Ba3 Be6 13.Bd6 Qd6 14.c5=.

12.Be2 Bb4 A) 13.Qb3 c5 14.Rc1 b6 15.0-0 Be6 16.Rfd1 Rc8=; B) 13.0-0 Be6 14.c5 b6 15.Nb3 Bc3 16.Bc3 Qe8=.

10.g3 Be6

11.a4 dc4 12.Bc4 Bc4 13.Nc4=+.

11.a4 Nd7 12.Qb3 Kh8 (12...Nf6 13.c5 Bb8 14.Be2=) 13.c5= Bc7 14.Ne2 (14.Be2 cb5 15.ab5 Nf6=) 14...Rf6 (14...Ng6 15.Rb1=+) 15.h4 (15...b6 16.bc6 Nc6 17.Qb5=+). Sternik,Ryszard – Cvetnic,Vladimir, corr ICCF EU–M–GT–34, 1991.

11.a4 Nd7 12.c5= Bc7 13.Nb3 (13.Be2 Ba5 (13...b6 14.cb6 ab6 15.bc6 Nc6 16.Rc1 Nf6=) 14.Rc1 a6 15.0-0 ab5 16.ab5 b6=; 13.Rc1 Rb8 (13...Ng6 14.Rb1 Ba5 15.Be2 Qg5 16.Nb3 Bb4+=) 14.Be2 Qe8 15.0-0 Qg6 16.f4 Nf6+=; 13.Rb1 Rc8 (13...Ba5 14.bc6 bc6 15.Ne2 Rb8 16.Bc3 Rb1=) 14.f3 Ba5 15.bc6 Nc6 16.Nb5 ef3=; 13.f3 ef3 14.Nf3 Nf6 15.Be2 Ne4 16.0-0 Qb8=) 13...g5 (13...Nf6 14.Be2= Qe8 15.a5 Qg6 16.b6 Bb8=; 13...Ng6 14.Be2 Nf6 15.0-0 Qe7 16.a5 cb5=) 14.a5= f4 (14...Rf6 15.a6 Rb8 16.ab7 Rb7=) 15.gf4 gf4 16.Rg1 (16.a6 ba6 17.Ra6 fe3 18.fe3 Rf3=) 16...Kh8= 17.ef4 Bf4 18.Ne4 Ng6 (18...de4 19.d5 Be5 20.de6 Bb2 21.ed7 Bc3 22.Nd2 Qd7 23.Rc1–/+) 19.bc6 (19.a6!? Bh2 20.Rh1+=) 19...bc6+= 20.Qh5?? (20.Ng3 Qh4 21.Nc1 Bg4= (worse is 21...Qh2 22.Rh1 Qf2 23.Kf2 Bc1 24.Kg2 Bb2 25.Ra2+-)) 20...Nf6?? (better is 20...Rb8 21.Rg6 Bf7–+) 21.Nf6+= Qf6 22.Bd3 Be3 23.Rf1 (23.fe3 Qh4 (23...Qf2; 23...Qf3)) 23...Bf2+= 24.Kd1 Qf4 25.h3 (25.Be2 Qe3 26.Ra3 Nf4 27.Qe5 Qe5 28.de5 Ne2 29.Ke2 Bg4 30.Kd3 Bc5+=) 25...Kg7 (25...Qg3 26.Bg6 Qg6 27.Qg6 hg6 28.Ra3+=) 26.Bc1 (26.Ra3 Qg3 27.Nd2 Qh3 28.Bg6 Bg4 29.Kc1 Bh5 30.Rh3 Bg6–+) 26...Qg3 27.Kc2 Rf3 (27...Bh3 28.Bg5 Rab8 29.Rh1+/–) 28.Bh6 Kg8 29.Rad1 (29.Qg5 Qg5 30.Bg5 Bh3–/+) 29...Bh3 30.Rh1 Rb8 31.Qg5 (31.Bf4!? Nf4 32.Qh7 Kf8 33.Qh8 Ke7 34.Qb8 Rd3 35.Qa7 Ke6 36.Qb7 Rb3 37.Qb3 Bf5 38.Kb2 Bd4 39.Ka3–+) 31...Bg4–+ 32.Qd2?? (better is 32.Bg6 Rc3 33.Kd2 Be3 34.Qe3 Re3 35.Bh7 Kf7 36.Be3 Qg2 37.Kc3 Bd1 38.Rd1–+) 32...Rd3 33.Qd3 Bf5!! (33...Bd1?! 34.Rd1 Qh2 35.Rd2 Qh6 36.Rf2–/+) 34.Rh3 (34.Qf5 Qb3 (34...Rb3)) 34...Qh3 (34...Qd3?! 35.Rdd3 Rb4 36.Rhf3 Bd3 37.Rd3–/+; worse is 34...Bd3 35.Rd3 Qg2 36.Kc1–+; 34...Bh3 35.Qg3 Bg3 36.Kc3–+) 0–1. Gerold,G – Poletaev,SM, corr ICCF EU/M/GT/069 (year?).

11.Qb3 Nd7 12.a4 Bf7 13.Ba3 Ba3 14.Ra3 c5 15.Nd5 (15.a5 dc4 16.Bc4 cd4 17.ed4 Nf6+=) 15...Nd5–/+ 16.cd5 cd4 17.Bc4 (17.ed4!? Rc8 18.f3–/+) 17...Nb6 18.0-0 Rc8 19.Qb4 Nd5 (19...d3!?–+) 20.Bd5–/+ Qd5 21.ed4 Rc2 22.Re1 (22.Rd1!?–/+) 22...Rd8–+ 23.Nf1 Qd4 24.Qd4 Rd4 25.Ne3 Rc5 26.Raa1 g5 27.Rec1 Rc1 28.Rc1 Be6 29.a5 f4 30.gf4 gf4 31.Ng2 f3 32.Nf4 Bc4 33.h4 (33.b6!? ab6 34.ab6–+) 33...Bb5 34.Ne6 Rc4 35.Rd1 e3 36.fe3 (36.Rd8 Kf7 37.Ng5 Ke7 38.fe3 Kd8 39.Nf3 Ra4–+) 36...Rc2 (36...Rh4?! 37.Rd8 Kf7 38.Nd4–+) 37.Nd4 f2 38.Kh1 Rd2! (38...Rd2 39.Rc1 f1Q 40.Rf1 Bf1–+) 0–1. Vehre,John – Eisen,David, corr, 1988.

11.c5 Bc7=.

5.c4 Be6

6.Qb3 Ne7 7.d4 c5 8.Nd2 cd4 9.ed4 0-0 10.c5 Bc7 11.Ngf3 e4 (11...Ng6!?=) 12.Ne4+= Bf7 (12...de4 Exploits the pin 13.Qe6) 13.Ned2 Re8 14.Be2 Ng6 15.Nf1 Nf4 16.Ne3 Ne2 17.Ke2 Nd7 (17...f5 18.Kf1 f4+=) 18.h3 (18.Rhc1 Nf8+=) 18...Nf8 (better 18...Nc5!? 19.dc5 d4=) 19.Rhe1+= Ng6 20.Kf1 Nf4 21.a4 Ba5 22.Bc3 Bc7 23.a5 Bh5 24.Nh2 Nd3 25.Kg1 (25.Nd5 Ne1 26.Nf6 Kh8 A) 27.Nh5?! Bh2 28.Re1 Re1 29.Be1 Qe8+=; B) 27.Re1?? Qf6 (27...gf6?! 28.Re8 Be8 29.Ng4 Ba5 30.Nf6 Qf6 31.Ba5-+) 28.Kg1 Re1 29.Be1 Qd4-+; C) 27.Ne8 Be8 28.Re1 (worse 28.Ke1 Bh2 29.Kf1 Qd7=+) 28...Bh2 29.g3+-) 25...Bh2 (25...Ne1 26.Be1 Bf7 27.Bd2=+) 26.Kh2= Ne1 27.Re1 Bf7 28.Nf5 Re1 29.Be1 a6 30.b6 Qe8 31.Qe3 Qe3 32.fe3 White gets the initiative 32...Re8 (32...Be8 33.c6+/-) 33.Bf2 Bg6? (better 33...Be6!? 34.Nd6 Rb8 35.Nb7 Rb7+-) 34.Nd6+- Re7? (34...Rb8 35.Nb7! Be8+-) 35.g4 (35.Nb7 Be8 36.Nd8 Kf8+-) 35...Be4?? (better 35...Be8+=) 36.Kg3 (36.Nb7 f5 37.Nd6 fg4+-) 36...g6 (36...h5 37.Nb7! h4 38.Kh2+-) 37.h4 (37.h4 f5 38.Nb7+-) 1-0. zembelek (2210) - tranca (2055), Rated Blitz game, lichess.org, 2014.

6.Qb3 Ne7 7.d4 c6 8.c5 Bc7 9.a4 Nd7 10.Nd2 0-0 11.Ngf3 e4 12.Ne4 Bf7 13.Ned2 Ng6 14.Bd3+- Ba5 15.0-0 Re8 16.Bc3 Ndf8 (16...Bc3 17.Qc3 Rc8 18.Rac1+-) 17.Ba5 Qa5 18.Rab1 Ne6 19.Qb4 Qb4 20.Rb4 h6 21.Rfb1 Ng5 (21...Ne7 22.bc6 bc6 23.h4+-) 22.Ng5 hg5 23.g3 (23.bc6 bc6 24.Rb7 Re7+-) 23...Re7 (23...Ne7 24.Nb3+-) 24.bc6 bc6 25.Rb7 (25.Nb3 Nf8+-) 25...Rae8 26.Re7 Re7 27.a5 Nf8 28.a6 Bg6 (28...Be8 29.Rb7 Kf7 30.g4+-) 29.Bg6 Ng6 30.Rb7 Kf7 (30...g4 31.Nb3+-) 31.Nb3 Nf8 (31...Ke6 32.Na5 Kf5 33.Nc6+-) 32.Na5 Ne6 (32...Rb7 33.ab7 Nd7+-) 33.Nc6 (33.Nc6 Rc7 34.Nd8 Ke8 35.Ne6+-) 1-0. zembelek (2040) - tranca (2065), Rated Blitz game, lichess.org, 2014.

6.Qb3 Ne7 7.d4 ed4 8.ed4 dc4 9.Bc4 Bc4 10.Qc4 Nd7 11.Nf3 Nb6 12.Qb3 Qd7 13.0-0 0-0-0 14.a4 g5 (14...Nbd5 15.a5=) 15.a5 Nbd5 16.Nc3 (16.b6 ab6 17.Nc3 Qf5=) 16...Nc3 17.Bc3 g4 18.Nh4 (18.Nd2 Nd5=) 18...Ng6 19.Ng6? (19.b6 a6 20.bc7 Bc7 21.Rfb1+=) 19...hg6-/+ 20.f4 gf3! 21.Rf3 (21.Rf3 Bh2 Combination; 21.gf3 Qh3 Combination) 21...Bh2 22.Kf2 Bd6 23.b6 a6 24.bc7 Rde8 25.d5?? (better 25.Qb6 Qe6 26.Re1 Qa2 27.Qb2 Qb2 28.Bb2 Re1 29.Ke1-/+) 25...Bc5-+ 26.Kg3 Re4 (26...Qd6 27.Be5 Qe5 28.Rf4 Bf2 29.Kf2 Qf4 30.Qf3 Qd4 31.Qe3 Qe3 32.Kf1 Rh1) 27.Rf4 Rf4 28.Kf4 (28.Qb7 Kb7 29.Rb1 Kc7 30.Be5 fe5 31.d6 Kc6 32.Rb6 Bb6 33.ab6 Qg4) 28...Rh4 29.Kf3 (29.Kg3 Qg4) 29…Qg4 0-1. zembelek1 (2155) - 2Ap (2210), Rated Blitz tournament, lichess.org, 2016.

6.Qb3 Ne7 7.Nf3 Nd7 8.d4 dc4 9.Bc4= Bc4 10.Qc4 Nb6 11.Qb3 e4 12.Nfd2 f5 13.0-0 Ned5 14.Nc3 Be7 15.a4 Nc3 16.Qc3 0-0 17.Nc4 Nd5 18.Qb3 Kh8 19.Ba3 c6 20.Rfc1 Ba3= 21.Na3 f4 22.bc6 bc6 23.Rc6 f3 24.Nc2 Qg5 25.g3+= Qh5 26.Ne1. gtate (1900) – thefrench (2390), net–chess.com, 2004.

6.Qc2 b6 7.d4 (7.cd5 Bd5 8.Nc3 Bb7=) 7...e4 (7...ed4 8.Bd4 a6 9.Nc3=) 8.Nd2 (8.Nc3 Bb4+=) 8...f5 9.Qb3 (9.c5 Be7+=) 9...Nf6= 10.h3 (10.cd5 Nd5 11.Bc4 Bb4=) 10...0-0 (10...a6 11.cd5 Nd5 12.Bc4=+) 11.Be2 (11.cd5 Bd5 12.Bc4 Bf7=) 11...Kh8 (11...a6 12.Ba3=+) 12.Rc1 a6 13.c5 Be7 14.a4 (14.cb6 cb6 15.Ba3 ab5 16.Be7 Qe7 17.Bb5 Qa3=+) 14...Qe8 (14...ab5 15.cb6 ba4 16.bc7 ab3 17.cd8Q Rd8 18.Rc3-/+) 15.c6 (15.cb6!? cb6 16.ba6=) 15...Qg6 16.g3 Nh5 17.Nf1 ab5 18.ab5 Bd6 Black plans f4 19.Bh5 Qh5 20.Ne2 g5 (20...Qf3 21.Rg1=+) 21.h4 f4 22.Rh2 Bg4?? (better 22...fe3 23.Ne3 Rf3=+) 23.hg5+- Qg5 24.gf4 Qg6 (24...Qd8 25.Nc3 Be6 26.Ng3+- (26.Nd5 Bd5 27.Qd1 Qf6-/+)) 25.Neg3 (better 25.Qd5 Be2 26.Ke2 Qg4 27.Kd2 Bb4 28.Bc3+-) 25...Bf4?? (better 25...Qf7+/-) 26.ef4+- Rf4 (26...Qd6 27.Ne3 Be6 28.f5+-) 27.Rc2 (27.Qd5 Qg7+-) 27...Rf3 (27...Be6 28.Bc1 Rf3 29.Rc3+-) 28.Rc3 (better 28.Qd5 Rf8 29.Qe5 Qg7+-) 28...e3 (28...Qf7 29.Rh4 Rc3 30.Bc3+-) 29.Ne3 (29.Re3?! Qb1 30.Kd2 Ra2+-) 29...Qb1 (29...Be6+-) 30.Rc1 Qg6 (30...Qa2 31.Qc2 Rf7 32.Ng4 Re7 33.Ne2 Qc4 34.Qc4 dc4 35.d5 Kg8 36.Nf6 Kf8 37.Nh7 Kf7 38.Ng5 Kg6+-) 31.Rh4 (better 31.Qd5 Qg7 32.Ng4+-) 31...Be6 (31...Qg5 32.Rh1 Rf2+-) 32.Qc2 (32.Rh1 Kg7+-) 32...Qg7?? (better 32...Re3 33.fe3 Qg3 34.Qf2 Qf2 35.Kf2 Ra2+/-) 33.Qe2 (33.Ke2 Qe7 34.Rh7 Qh7 35.Kf3 Qc2 36.Nc2 Ra5+-) 33...Rf8 (33...Rg3 34.fg3 Qg3 35.Qf2 Qf2 36.Kf2+-) 34.Qh5 (34.Rh5 Ra2+-) 34...Bg8 (34...Ra5 35.Ne4!+- (worse 35.Nd5 Bf7 36.Rg4 Bh5 37.Rg7 Kg7+-)) 35.Qe5 (35.Nd5 Bf7 36.Qf3 Ra2+-) 35...Ra2 (35...Ra5 36.Nh5 Qe5 37.de5 Rb5 38.Bd4+-) 36.Qg7 (36.Rc2!? Qf6+-) 36...Kg7 37.Rc2 Na6 (37...Ra5+-) 38.ba6 Ra6 39.Ngf5 Kg6 (39...Kh8 40.Ne7 Rd8 41.Re2+-) 40.Ne7 (better 40.Rh6 Kf7 41.Nd5 Re8 42.Kf1 Re6 43.Nc7 Rh6 44.Nh6 Kf8 45.Na6 Be6+-) 40...Kf7 41.N7d5 (41.N3d5 Ra5 42.Re2 Rfa8+-) 41...Ra7 42.Kd2 (42.Re2 Ke8+-) 42...Kg7 (42...Ke8 43.Kd3+-) 43.Kc3 (43.Rg4 Kf7+-) 43...Rf3 (43...Bd5 44.Nd5 Rf5 45.Nf4+-) 44.Rg4 (better 44.Kb4 Bd5 45.Nd5 h5+-) 44...Kh8 (44...Kf8 45.Nf4 Ra5 46.Kb4+-) 45.Rg8! Kg8 46.Nc7! Rc7 47.d5 (47.Kb4 Rff7+-) 47...Kf7 (47...Rf4 48.Kb3 Rf8 49.d6+-) 48.Kd4 Ke7 (48...Ke7 49.Ke5 Kd8+-). zembelek (2055) - artin_iran (2065), Rated Blitz game, lichess.org, 2014.

6.Qc2 dc4 7.Bc4 Bc4 8.Qc4 =.

6.Qc2 c6 7.a4 Ne7 8.cd5 cd5 9.Nc3 Nd7 10.Nf3 Rc8 11.Be2 Nf5 12.Qd1 0-0 13.0-0 e4 14.Ne1 Ne7 15.f3 f5 16.fe4 (16.Rc1 Qb6=+) 16...fe4 17.Nc2 Qc7 18.Ba3? (better is 18.g3!?–/+) 18...Bh2 19.Kh1 Nf5 (19...Rf1!? 20.Bf1 Nf5 21.Rc1–+) 20.Bf8 (20.Rf5 Rf5 21.Nd4 Rf6 22.Ne6 Re6 23.Nd5 Qe5 24.Ne7 Re7 25.Be7 Bg3–/+) 20...Ng3 (20...Nf8?! 21.Rf5 Bf5 22.Nd4=+; 20...Kf8?? 21.Nd4 Ke8 22.Nf5+- (22.Ne6?! Ng3 23.Kh2 Nf1 24.Kg1 Qe5+-; 22.Rf5?! Bf5 23.Nf5 Qe5+-); 20...Rf8?! 21.Rf5 Bf5 22.Nd4–/+) 21.Kh2 Nf1 22.Kg1 Qh2 23.Kf1 Rf8 24.Bf3 ef3 25.gf3 Bh3 (25...Ne5 26.Qe2 Bh3 27.Qg2 Qg2 28.Ke1 Qf1) 26.Ke1–+ Ne5 27.Qe2 Qg1 0–1. Otte,Marco – Cornelissen,P, Gent, 2000.

6.Qc2 Nd7 7.Nf3 (7.cd5 Bd5 8.Nc3 c6=) 7...Ne7+= 8.Be2 Bf5 9.Qd1 (9.d3 dc4 10.Qc4 a6+=) 9...dc4 10.Bc4 Nb6 11.Be2 0-0 (11...Ned5 12.0-0+=) 12.Nc3 c5 13.Qb3 Kh8 14.d3 (14.Nh4 Bd7=) 14...Qd7+= 15.Nd2 (15.Rc1 Rfd8+=) 15...Be6 16.Nc4 Qc7 (16...Nf5 17.Ne4 Rfd8 18.0-0= (worse is 18.Ned6 Nd6 19.0-0 Nb5–/+)) 17.Qc2 (17.Ne4 Rfd8=) 17...Nd7 (17...Nc4 18.dc4 Rfd8 19.0-0=) 18.Ne4 (18.b6 Qc6 19.Bf3 Nd5+=) 18...Bc4 (18...Nc8 19.0-0=) 19.dc4 (worse is 19.Nd6 Bd5 (worse is 19...Qd6 20.dc4 Qe6 21.Bf3+=) 20.Ne4 Qa5 21.Bc3 Qb5–/+) 19...Ng6 (19...f5 20.Nd6 Qd6 21.0-0+=) 20.0-0-0 (20.Rd1 Be7+=) 20...Be7 21.h4 Nh4? (better is 21...Rfe8+=) 22.Rh4+- f5 23.Rh2 fe4 24.Qe4 Threatening mate... how? 24...Nf6 25.Rh7!! Nh7 26.Rh1 g6 (26...Kg8 27.Qh7 (27.Rh7?! Bf6+/–) 27...Kf7 28.Bh5 Ke6 29.Qg7+-) 27.Be5 Qe5 28.Qe5 Bf6 29.Qc7 Bg7 30.Qh2 Kg8 (30...Bh6 31.Qh6 Rf7 32.Bd3+-) 31.Qh7 Kf7 32.Bd3 Ke7 33.Qg7 Rf7 (33...Ke6 34.Rh7 Rae8 35.Qg6 Rf6 36.Qe8 Kd6 37.Qe7) 34.Qe5 Kd7 35.Bf5! gf5 (35...Rf5 Theme: Deflection from h7 36.Rh7 The nicest combinations are those leading to mate) 36.Rd1 A beautiful mate combination 36...Kc8 37.Qc5 Rc7 38.Qf8 1–0. Pagni,Carlo Alberto – Norman, corr th, 1990.

6.d4 dc4 7.de5 Bb4 8.Nc3 (8.Bc3 Qd1 9.Kd1 Bc3 10.Nc3 Nd7 11.ef6 Ngf6=) 8...Qd1 9.Rd1 a6 10.a3 (10.ba6 Ra6 11.Rd2 fe5-/+) 10...Ba5 (10...Bc3 11.Bc3 ab5 12.Bb2-/+) 11.ba6=+ Na6 12.Nf3 Nc5 13.Nd2 (13.Nd4 Bg4 14.ef6 A) 14...Bd1?? 15.fg7 Na4 16.gh8Q+- (16.gh8B?! Nb2 17.Ne6 Ne7+=; 16.gh8N? Nb2 17.Kd2 Rd8-+); B) 14...Nf6=+) 13...fe5 (13...Bc3 14.Bc3 Ra3 15.ef6 gf6=+ (15...Rc3?? 16.fg7 Nd3 17.Bd3 Rd3 18.gh8Q+-)) 14.Bc4= 0-0-0 (better 14...Rd8!? 15.Be2 Nf6=+) 15.Be6+/- Ne6 16.Nc4 Bc3 17.Bc3 e4 18.Rd8 Kd8 19.Ke2 (19.Nd2 Nf6 20.Bf6 gf6 21.Ne4 f5+/-) 19...Ne7 (19...Nf6 20.Nd2+=) 20.Ne5 (better 20.Nd2!?+/-) 20...Rf8 21.Rd1 Kc8 22.Rd7 (22.Nc4 Rf5 23.Nd2 Rh5+=) 22...Re8 23.Rd1 (23.f4 ef3 24.gf3 Ng6=) 23...g6 (23...Rd8 24.Rd8 Kd8 25.Nc4=) 24.Ng4+= Rd8 (24...Ng8!?+=) 25.Rd8+/- Kd8 26.Nf6 c6 27.Ne4 Nd5 28.Bb4 (28.f4 h5+/-) 28...b6 29.Kd3 Kd7 30.Nc3 (30.f4 h5+/-) 30...Nb4 (30...Nf6!? 31.Nd1 b5+=) 31.ab4+/- b5 (31...h5!? 32.f4+-) 32.Ne4+- Ke7 33.g4 (33.Nc5 Nc7+-) 33...g5 (33...Nc7 34.Nc5+-) 34.Ng3 (34.Nc5!? Nc7+-) 34...Kf6 35.Nh5 Ke5 36.f3 h6 37.Ng3 (37.Kc3 Nc7 38.f4 Kd6+/-) 37...Nc7 38.e4 (38.Nf5 Nd5 39.Nh6 Nb4 40.Kd2 Nd5+/-) 38...Kf4 (38...Na6 39.Kc3=) 39.Nf5 Kf3 40.Nh6 Kf4 41.h3 (41.Nf7 Na6 42.e5=) 41...Kg3 (41...Na6 42.Kd4 Nb4 43.e5 Nc2 44.Kc3=) 42.Ke3 (better 42.Kd4!?+/-) 42...Kh3 43.Kf3 (43.e5 Nd5 44.Ke4 Nb4=) 43...Ne6=+ 44.Nf5 (44.e5!?=+) 44...c5-/+ 45.bc5 Nc5 46.e5 (46.Nd6 b4-+) 46...b4 47.Ne3 (47.Nd6 Ne6-+) 47...b3-+ 48.Nc4 Ne6 49.Nb2 Kh4 50.Nd3 Nc5 51.Nb2 Kh3 ½-½. Mely (2285) - TheShrink (2050), ChessWorld.net, 2016.

6.cd5 Bd5

7.Nc3 Ne7 8.Qg4+= 0-0?? (better is 8...g6+=) 9.Nd5+- Nd5 10.Qe6 Kh8 11.Qd5 a6 (11...c6 12.Qb3+-) 12.Qb7 Nd7 13.Qc6 (13.ba6?! Rb8 14.Qc6 Rb2+/–) 13...Nc5 14.Ba3 Nd3 15.Bd3 Ba3 16.Be2 (16.Bf5 ab5 17.Qb5 g6+-) 16...Bb4 (16...ab5 17.Bb5 f5 18.Nf3+-) 17.Nf3 ab5 18.Bb5 g5 (18...f5 19.0-0 (19.Ne5 Qd2 20.Kf1 Ra2 21.Nf7 Rf7 22.Qa8 Ra8 23.Ra8 Rf8 24.Rf8 Bf8–+) 19...e4 20.Ne5+-) 19.Qe4 h5 (19...Ba3+-) 20.Qb4 (20.Qb4 Qd5 21.Bc4+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

7.Nc3 Be6

8.a4 Ne7 9.Nf3 0-0 10.Be2 c5 11.d4 ed4 12.ed4 Nd7 13.0-0 Qc7 14.Rc1 (14.Ne4 Bd5 15.Nd6 Qd6=) 14...Bf4=+ 15.Ra1 cd4 (15...Rad8 16.g3 Bd6 17.Re1=) 16.Nd4 Bh2 (16...Bf7 17.g3 Be5 18.f4 Bd4 19.Qd4=) 17.Kh1+= Bf7 Black gets the initiative 18.Rc1 (18.g3!? Bg3 19.fg3 Qg3 20.Qe1 Qh3 21.Kg1=) 18...Bf4=+ 19.Nd5 Qd6 (19...Bd5?? 20.Rc7 Bc7 21.Nf5 Bg2 22.Kg2 Nf5 23.Qd7+-; 19...Nd5 20.Rc7 Bc7 21.Nf5+=) 20.Ne7 (20.Nf4 Qf4 21.Bf3 Ne5 22.Bb7 Rab8–/+) 20...Qe7–/+ 21.Rc3 Rad8 (21...Qb4 22.Rf3 Be5 23.Bc3–/+) 22.Rd3?? (better 22.Ba3 Qe5 23.g3+=) 22...Ne5–/+ 23.Nf5 Qc7 24.Rd4 Nc4 25.Bc4 Bc4 26.Qg4?? (better 26.Re1 Be5 27.Rd8 Rd8 28.Qg4–/+) 26...Rd4–+ (26...Bf1?! 27.Rf4 Be2 28.f3–+) 27.Bd4 (27.Re1 Bd2 28.Bd4 Be1–+) 27...Bf1 28.Bc5 (28.b6 ab6 29.Bb6 Be2 30.Bc7 Bg4 31.Bf4 Bf5–+) 28...Re8 29.Be3 Be3 30.fe3 (30.Ne3 Bd3 31.Qd4 Be2–+) 30...Bd3 31.Nh6 (31.Kg1 Kh8 32.Qf3 Bf5 33.Qf5 Qc1 34.Kh2 Qe3–+) 31...Kh8 32.Qh5 (32.Nf5 Re4 33.Qg3 Qg3 34.Ng3 Ra4–+) 32...Bg6 (better 32...Re3 33.Nf7 Kg8 34.Nh6 gh6 35.Qg4 Kf7 36.Qh5 Ke7 37.Qh4–+) 33.Qd5 (33.Qf3 Re5 34.Kg1 Qc1 35.Kf2 Qc2 36.Kg1 Qd2–+) 33...Qc1 34.Kh2 gh6 (better 34...Qe3 35.Nf7 Bf7 36.Qf3–+) 35.Qd6 (35.Qd6 Qb2 36.Qd4 Qd4 37.ed4–+). BeepBeepImAJeep (2480) – kingston_1972 (2380), lichess.org, 2015.

8.Bc4! Bc4 9.Qg4+/–.

8.Bc4 Qd7 9.Qb3 Bc4 10.Qc4 c6 11.a4 Ne7 12.Nf3 Qc7 13.Ne4 Nd7 14.Qe6 Bc5 15.0-0 f5? (better is 15...Rc8+/–) 16.Neg5+- Qd6 17.Qf7 Kd8 18.bc6 Nc6 19.d4 ed4 20.ed4 Bb6 (20...Nd4?? 21.Bd4 Kc8 22.Bg7+-) 21.d5 Nce5 22.Be5 Ne5 23.Ne5 Qe5 24.Ne6 Kc8 25.Rfc1 Kb8 26.Nf8 (26.Nf8 a6 27.Nd7 Ka7 28.Ne5+-; 26.Qg7?! Qg7 27.Ng7 Bd4 28.Nf5 Ba1 29.Ra1 Kc7+/–) 1–0. Geiger,Walter (2050) – Wurm,Tamas, IECG, 2006.

8.d3 Ne7 9.d4 (9.Nf3 a6 10.d4 0-0+=) 9...0-0 (9...ed4!? 10.Qd4 Nd7+=) 10.Nf3= Nd7 11.Bd3 ed4 12.Nd4 Bf7 13.0-0 Ne5 14.Ne4 Nd3 15.Qd3 c5 16.Ba3 (16.bc6 Nc6 17.Nd6 Qd6+/–) 16...Bh2 (better is 16...c4 17.Qc3 Nd5–/+) 17.Kh2+= cd4 18.ed4 Bd5 19.Rfe1 f5 (19...Rc8!?+=) 20.Nc3+- Re8 21.Re7 Re7 22.Nd5 (22.Be7?! Qe7 23.Qf5 Bc4+=) 22...Rd7 23.Nf4 (23.Ne3!? Rd4 24.Qb3 Kh8 25.Bb2+- (25.Nf5 Rf4 26.Qf7 Qg8 27.Qg8 Kg8+=)) 23...Rd4 (23...Qh4!? 24.Nh3 Qd4 25.Qf5 Rf7+/–) 24.Qf5 1–0. Maly,Guenther (1740) – Mantau,Jan (2085), RSX7E – A00 – Sokolsky–1, 2008.

8.d4 ed4 9.Qd4 Nd7 =.

8.Ne4 Ne7=.

8.Nf3 Nd7 9.d4 Qe7 A) 10.Bd3 ed4 11.Nd4 Nc5 12.Bc2 Rd8 13.Rc1 Be5; B) 10.Be2 Nh6 (10...Rd8 11.Qa4 Ra8 12.0-0 Nh6 13.Rfd1 0-0; 10...ed4 11.Nd4 0-0-0 12.Ne6 Qe6 13.Rc1 Kb8; 10...0-0-0 11.d5 Bf7 12.Qa4 Kb8 13.e4 f5; 10...Nb6 11.Qc2 Rd8 12.0-0 Nh6 13.Rfd1 Bf5) 11.0-0 0-0 12.Ne4 a6 13.ba6 ba6; C) 10.Rc1 Nh6 11.Bd3 ed4 12.Nd4 Nc5 13.Ne6 Qe6; D) 10.Qc2 ed4 (10...0-0-0 11.Rc1 Nb6 12.Bd3 ed4 13.Nd4 Kb8) 11.Nd4 Ne5 12.Rd1 0-0-0 13.Be2 Nh6.

8.Nf3 Nd7 9.d4 Ne7!?+= 10.Bd3 0-0 (10...f5 11.e4 f4 12.0-0 Ng6 13.Nd5 0-0) 11.0-0 Qe8 12.Ne4 Nd5 13.Nd6 cd6.

8.Nf3 Nd7 9.d4 Bg4 10.Bc4+/– (10.Be2 Qe7 (10...Ne7 11.0-0 Be6 12.de5 Ne5 13.Ne4 0-0; 10...Be6 11.0-0 Ne7 12.de5 Ne5 13.Nd4 Bf7; 10...Nh6 11.0-0 Be6 12.Bd3 0-0 13.Ne4 Nf7) 11.Nd5 Qd8 12.de5 fe5 13.Rc1 Ngf6) 10...Ne7 (10...ed4 11.Qd4 Bf3 12.gf3 Ne5 13.Be2 c5) 11.h3 Bf3 (11...Bh5 12.0-0+- ed4 13.ed4 Nb6; 11...Nb6 12.Bb3 Bh5 13.de5 fe5) 12.Qf3 (12.gf3?! Kf8+/– (12...ed4 13.Qd4 Ne5) 13.Rg1 Nb6) 12...c6 (12...Nb6 13.Be6 A) 13...Bb4 A1) 14.Qb7 Na4 15.0-0-0 Bc3 (15...Nc3? 16.de5 Qb8 17.Qf3 Nd1 18.Rd1+-) 16.Bc3 Nc3 17.de5 Nd1 18.Rd1 Qb8+/–; A2) 14.0-0 Bc3 15.Bc3+-; B) 13...ed4+/–; 12...ed4 13.ed4 Nb6) 13.0-0 (13.Qg4 Ng6) 13...Nb6 (13...ed4 14.ed4 Nb6 15.Be6+-) 14.Be6 Ned5 (14...ed4 15.Ne4 Qc7 16.Bd4 Bh2 17.Kh1 Be5+-) 15.bc6 (15.Nd5?! cd5 16.de5 Qe7 17.Bd5 Be5 18.Bb7 Bb2 19.Ba8 Ba1 20.Ra1 0-0+-; 15.Bd5?! cd5 16.Nd5 0-0+-) 15...bc6 16.Nd5 (16.Bd5?! cd5 17.Nd5 0-0+-) 16...Nd5 (16...cd5 17.de5 (17.Bd5?! Nd5 18.de5 Be5 19.Be5 0-0+-) 17...Ke7 18.Bd5 (18.ed6?! Ke6 19.Ba3 Rc8+-) 18...Nd5 19.Qd5+-) 17.de5 Be5 18.Be5 fe5 (18...Ke7 19.Rac1 fe5 20.Rc6 Nf6+-) 19.Qf7 1–0. pereira – tehpb, internet, 2009.

8.Nf3 Nd7 9.d4 Nh6 10.Bd3 f5 (10...0-0 11.0-0 f5 12.e4 ed4 13.Nd4 Qh4; 10...Bg4 11.0-0 ed4 12.ed4 0-0 13.Re1 Re8; 10...Nf7 11.0-0 Qe7 12.Qc2 ed4 13.ed4 c6; 10...Rc8 11.0-0 0-0 12.Ne4 Nf7 13.Qb1 h6) 11.e4 0-0 12.0-0 Qe7 13.ef5 Bf5.

8.g3 Ne7+= 9.Bg2 c6 10.Nge2 0-0 11.0-0 (11.d4 Qb6=) 11...f5 (11...Qd7 12.Ne4+=) 12.f4 (12.d4 Bc4=) 12...e4 13.d3 (13.g4 cb5 14.gf5 Nf5 (14...Rf5? 15.Nd4 Qd7 16.Ne4+-; worse is 14...Bf5 15.Qb3 Kh8 16.Ne4+=) 15.Nb5 Qd7 16.Nd6 Nd6+=) 13...ed3 (13...Bc5 14.de4 Bc4 15.Qd8 Be3 16.Kh1 Rd8 17.Rfd1=) 14.Qd3 Bc5 (14...Bb4 15.Qd8 Rd8 16.Rfd1=) 15.Nd4 Bd4 (15...a6 16.bc6 Nbc6 17.Rad1=) 16.Qd4+= Qd4 17.ed4 Rd8 18.Rfe1 Kf7 19.bc6 (19.Ba3 Nd5 20.Re6 Nc3 21.Re7 Kg8 22.Rb7 cb5+-) 19...bc6 (19...Nbc6 20.Re6 Ke6 21.d5 Kf7 22.dc6 bc6 23.Ba3+/–) ½–½. Rodriguez de Castro,Ayar – Gavrilakis,Nikolaos, Wch U20 prel–A, 1973.

8.Be2 Ne7

9.Ne4 0-0 10.Nd6 cd6 11.Qc2 Nd7 12.Nf3 Rc8 13.Bc3 d5 14.0-0 Nb6 15.d4 (15.d4 Bg4 16.Rac1=). super knight – Hartur, internet, 2006.

9.Nf3 0-0 10.Ne4 (10.d4 a6=) 10...Nd7 (10...Bb4 11.a3 Bd6 12.d4+=) 11.a4 (11.0-0 Bd5 12.Qc2 Bb4=) 11...Nc5 (11...Nd5 12.Nd6 cd6 13.0-0=) 12.Nc5 Bc5 13.Rc1 (13.Qc2 Qd5+=) 13...Bb6 (13...Bd6 14.Qc2+=) 14.0-0 (14.d4 e4 15.Nd2 f5=) 14...Nd5 (14...e4 15.Nd4 Bd5 16.d3+=) 15.Bc4 (15.d4 e4 16.Nd2 f5=) 15...Qd7 (15...e4 16.Nd4 Bf7 17.d3 ed3 18.Qd3+/–) 16.Qb3 (16.d4 e4 17.Nd2 f5=) 16...Rfe8 (16...e4 17.Nd4 Bf7 18.d3+=) 17.Rc2 (17.d4 e4 18.Nd2 f5=) 17...Rad8 (17...e4 18.Nd4 Bf7 19.d3+=) 18.Rfc1 (18.d4 e4 19.Nd2 f5=) 18...Ba5 (18...e4 19.Nd4=) 19.Ba3 (19.e4 Nf4 20.d4 ed4 21.Nd4 Bc4 22.Qc4 Qf7=) 19...Bb6 (19...e4 20.Nd4=) 20.Kf1 (20.e4 Nf4 21.Rd1 Nd3+=) 20...c6 (20...e4 21.Ne1–/+) 21.Rb2 (21.e4 Nf4=) 21...Rc8 (better is 21...e4 22.bc6 bc6+=) 22.Ke2? (22.bc6 Rc6 23.e4 Nf4=) 22...c5 (22...e4 23.Ne1–+) 23.Rbc2 (23.e4 Nf4 24.Kf1 Kh8=) 23...Nc7 (better is 23...e4!? 24.Ne1 Rcd8–/+) 24.d3 Red8 25.Rd1 (25.a5 Ba5 26.Be6 Ne6 27.Rc5 Qf7+=) 25...Qf7 (25...e4 26.Nd2+=) 26.e4 (26.Kf1 e4 27.Ne1 Nd5=) 26...Bc4+= 27.Qc4 Qc4 (27...Ne6 28.Kf1=) 28.Rc4 (28.dc4 Rd1 29.Kd1 Rd8 30.Rd2 Rd2 31.Kd2 Ne6+=) 28...Ne6= 29.g3 (29.Bc1 Nd4 30.Nd4 cd4 31.Rc8 Rc8=) 29...Nd4 30.Nd4 Rd4 (worse is 30...ed4 31.Rdc1+/–) 31.Rdc1 Increases the pressure on c5 31...Rcd8 (31...Kf7 32.Rd4 ed4 33.a5 Ba5 34.Rc5+= (34.Bc5? Bb4–+)) 32.Rd4 cd4 (32...Rd4 33.Bc5 (33.Rc5? Bc5 34.Bc5 Ra4–+) 33...Bc5 34.Rc5 Ra4 35.Rc8 Kf7 36.Rc7 Kg6 37.Rb7 Ra2 38.Ke3+/–) 33.Bb4 (33.Be7 Rd7 34.Bb4 Kf7+=) 33...a5 34.Ba3 (34.Be7 Rd7 35.Ba3 Kf7+=) 34...Kf7 35.Kd2 (35.f4 Ke6+=) 35...Ke6 36.Bc5 (36.f4 f5=) ½–½. Dessing,Bastiaan – Swinkels,Robin, NED–ch U12 Rijswijk, 2001.

9.Nf3 c5 10.Ne4=.

9.Nf3 Nd7 10.0-0 0-0 11.Ne4 Bb4 12.a3 Ba5 13.d4 ed4 14.Nd4 Bf7 15.Nb3 Bb6 16.a4 c6 17.Nd6 cb5 18.Nf7 Kf7 19.Bb5 Ne5 20.Be5 Qd1 21.Rfd1 fe5 22.a5 Bc7 23.Rd7 Rac8 24.Rc1 a6 25.Rcc7 Rc7 26.Rc7 ab5 27.Rb7 Ra8 28.Rb5 Nc6 29.g3 Ke6 30.Kg2 Ra7 31.a6 Kd6 32.Rb7 Rb7 33.ab7 Kc7 34.Nc5 Kd6 35.Na6 1–0. rayfranke (2470) – rollerblade (2420), net–chess.com, 2014.

9.Bh5 Ng6=.

8.Nf3 Ne7

9.d4 ed4 10.Nd4+= White begins to deal mighty blows. 10...Qc8 (10...Bc8 11.Qh5 g6 12.Qh4+/–) 11.Ne6+/– Qe6 12.Qh5 Ng6 (12...Kd8 13.Bd3+/–) 13.Bd3 Qf7 14.Be4 c6 15.0-0 (15.Rd1 Be5+/–) 15...a6 (15...Ne7 16.Qf3+/–) 16.Rad1 (16.Rfd1 Be5 17.a4 ab5 18.ab5 Ra1 19.Ba1 0-0+/–) 16...Ne5 (16...Be5 17.Qg4 Ne7 18.bc6 bc6 19.Bd3+/–) 17.Qh3 Ke7?? (better is 17...Qd7 18.Bf5 Qe7+-) 18.bc6+- bc6 (18...Nbc6 19.Bd5 Qe8 20.Qe6 Kf8 21.Qd6 Qe7 22.Ba3 Qd6 23.Bd6 Ke8 24.Rb1+-) 19.Nd5! (19.Nd5 cd5 20.Bd5 Qd5 21.Rd5+-; 19.Bh7 Qe6 20.Qe6 Ke6 21.Bf5 Kf5 22.Rd6 Ra7 23.e4 Kg6+/–) 1–0. Kilpatrick,Robert – Reeman,Ian F, corr SCCA cand, 1986.

9.d4 ed4 10.Nd4 Bd7 11.Bc4 Nf5 (11...Be5 12.Qh5 g6 13.Qf3+/–) 12.Ne6 Be6 13.Be6 Nh6 14.Nd5 c6?? (better is 14...Nf7+/–) 15.Bf6+- Qa5 16.Bc3 Qb5 17.Rb1 Qa6 18.Qh5 Kd8 19.Qg5 Ke8 20.Nc7!! Bc7 21.Qg7 Rf8 22.Qc7 Qd3 23.Rb3 b6 (23...Qd8 24.Qb7 Nd7 25.Bd7 Qd7 26.Qa8 Kf7+-) 24.Bf6! Qd2 (24...Rf6 25.Rd3 Discovered attack) 25.Kd2 Rf6 26.Rd3 Na6 27.Qc6 1–0. pcmvr (2845) – bienopia (2155), net–chess.com, 2011.

9.d4 Nd7 10.Bd3=.

9.Be2 0-0 10.0-0 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 c6 14.d4 ed4 15.Nd4 Bf7 16.bc6 (16.Ne4 Bd5 17.Qb1 Be5+/–) 16...Nbc6+= 17.Nc6 Nc6 18.Ne4 Be5 19.Nc3 Qc7 20.h3 Nb4 21.Nb5 Bb2 (21...Qc2 22.Be5 Qe2 23.Nd4+=) 22.Qb2+= Qe7 23.Rc1 Rd8 (23...Nc6!?+=) 24.Rc7+/– Qe4 (24...Qf8!?+/–) 25.Bf3+- Nd3 26.Qc3 (better is 26.Qf6 Qe8 27.Qh4+-) 26...Qa4?? (26...Qb4 27.Qb4 Nb4 28.Rb7+/–) 27.Rb7 (better is 27.Rd7! Rf8 28.Qd3+- (28.Rd3?! Qb5 29.Rd6 b6+/–)) 27...Bc4 (27...Ne5!? 28.Be2 h6+/–) 28.Nd4+- Ne5 29.Rb4 Nf3 30.gf3 Qd1 31.Kg2?? (31.Kh2 Bf7+/–) 31...Bf7?? (better is 31...Qf1 32.Kh2 Qf2 33.Kh1 Be2 34.Qb3 Kh8 35.Ne2 Qf3 36.Kg1 Qe2–/+) 32.Rb7+- g5?? (better is 32...Rf8+-) 33.Qc7 Rf8 34.Ne6!! (34.Ne6 Qb3 35.Rb3 Be6 36.Rb6+-) 1–0. GuestFQKP – GuestTHLY, freechess.org, 2017.

9.Be2 Nd7 10.0-0 0-0 11.d4 ed4 12.Nd4+= Bf7 13.Ne4 Bb4 14.a3+/– Ba5 15.Qa4 Bb6 16.Bc4 Nc5 17.Bf7 Rf7 18.Nc5+- Bc5 19.Ne6 Qd6 20.Qc4 Bb6 21.Rfd1 Qc5 22.Nc5 (22.Nc5 Bc5 23.Qc5+-) 1–0. algernon (2155) – lesieges (2310), net–chess.com, 2003.

9.Ne4 0-0 10.Qc2 Nd7 11.Bd3 f5 12.Neg5 Bd5 13.e4 fe4 14.Be4 Be4 15.Qe4 Nf6 16.Qc4 Kh8 17.Ne6 Qd7 18.Nf8 Rf8 19.Be5 Nf5 20.0-0 Nh6 21.Bd6 Qd6 22.Qd4 Nd5 23.Qe5 Qd7 24.a4 c6 25.bc6 bc6 26.Nd4 Nf4 27.Ne2 Ng4 28.Qe4 Nd3 29.f3 Nge5 30.f4 Ng4 31.Ra3 Rd8 32.Rc3 c5 33.Nc1 Nc1 34.Rcc1 Qd2 35.Rc5 h5 36.Rh5 Kg8 37.Qe6 1–0. purplegadge (1725) – brainbox (1875), gameknot.com, 2014.

9.Ne4 0-0 10.d4=.

9.Ne4 Bb4 10.Qa4 c5 (better is 10...Nd5!?=) 11.a3+/– Bd5 12.Nf6! gf6 13.ab4 Bf3 14.gf3 0-0? (better is 14...Nd7+/–) 15.Rg1 Kh8 16.bc5 Qd5 (16...Nd7 17.d4+-) 17.Be2 (17.d4 Ng6+-) 17...Nd7 18.d4 ed4 (18...Qe6 19.Qc4 Qc4 20.Bc4+-) 19.Bd4 (better is 19.Qd4!? Qd4 20.Bd4 Rfc8+-) 19...Nc5 20.Qb4 (20.Qb4 b6 21.Qc3+-) 1–0. GuestMKNW – GuestMCGL, freechess.org, 2017.

7.Nc3 Bf7

8.d4 ed4 9.Qd4 c5 (better is 9...Ne7!?= 10.Ne4 Bd5 11.Nd6 Qd6 12.Rd1+=) 10.Qg4+/– Bg6 (10...g6 11.0-0-0 Qc7 12.b6+-) 11.Rd1 Nh6 (11...Ke7 12.Ne4 Qa5 13.Bc3 Qa4 14.Nf6 Qg4 15.Ng4 Nf6 16.Nf6 gf6 17.Bf6 Kf6 18.Rd6 Ke7+-; 11...Qd7 12.Qf3+-) 12.Qe6 Qe7 13.Qc8 (worse is 13.Rd6 Qe6 14.Re6 Kd7+-; worse is 13.Qd6 Qd6 14.Rd6 Nf7+-) 13...Qd8 14.Qb7 Bc2 15.Rd2 Nd7 16.Rd6 Rc8 (16...Bf5 17.e4 Nf7 18.Ra6+-) 17.Bc4 Rc7 (17...Qc7 18.Re6 Kd8 19.Qc7 Rc7 20.Nd5+-) 18.Qd5 Qe7 (18...Bf5 19.e4 Qe7 20.Qa8 Qd8 21.Qd8 Kd8 22.ef5 Nf5+-) 19.Qa8 Qd8 20.Re6 Kf7 21.Qd8 Rd8 22.Rc6 Kg6 23.Rc7 Ne5 24.Rc5 Nf5 (24...Bd3 25.Bb3 Bf5 26.Rd5 Nd3 27.Kd2+-) 25.Nge2 1–0. Kuhlmann – Brand, 1956.

8.d4 Nd7 9.Nf3 Ne7 10.Be2 0-0 11.0-0 Ng6 12.Qc2+=.

8.Nf3 Nd7 9.Be2 Ne7 10.d4 0-0 11.0-0 Qe8 12.Ne4+=.

8.Nf3 Ne7 9.d4 ed4 10.Nd4 0-0 11.Bd3 c5 12.Nf3 Qc7 13.Qc2 Bg6 14.0-0 Nd7 (14...Bd3 15.Qd3 c4 16.Qe4+=) 15.Ne4 Rac8 16.Nd6 Qd6 17.Bg6 Ng6 18.Qc4 Kh8 19.Rfd1 Qe7 20.a4 Rc7 21.a5 Rfc8 (21...Nde5 22.Be5 fe5 23.Rac1+=) 22.Rac1 b6 23.Bc3 ba5 24.Ba5 Nge5 25.Ne5 Ne5 26.Qd5 (26.Qe4 Rd7=) 26...Rd7= 27.Qe4 Qf7 (27...Qe8 28.Qf5=) 28.h3 (28.Qf5 Rd1 29.Rd1 Re8=) 28...Rd1+= 29.Rd1 Kg8 (29...Qb3!? 30.Rb1 Qd3 31.Qd3 Nd3=) 30.Bc3+= Qb3 31.Qd5 (31.Rc1 Qb5 32.Be5 fe5 33.Qd5 Kh8 34.Qe5 Qc6+=) 31...Qd5= 32.Rd5 c4 33.f4 Nd3 34.Kf1 Rc7 35.Ke2 Kf7 36.f5 Ke7 37.Kd2 Rb7 38.Bd4 g6 (38...g5 39.Kc3 Rc7 40.b6 ab6 41.Rb5+=) 39.fg6 (39.Kc3!?+/–) 39...hg6= 40.Kc3 Rc7 41.h4 (41.e4 Ke6+=) 41...Nf2 (41...f5 42.h5 Ke6 43.Rd8 gh5 44.Rf8+=) 42.Kc2 (42.Bc5!? Ke6 43.Rd6 Kf5 44.Rc6+/–) 42...Ne4= 43.g4 White prepares the advance h5 43...Rb7 44.h5 Ke6 45.Rd8 gh5 46.gh5 (46.Re8!? Kd5 47.Rd8 Nd6 48.gh5=) 46...Rb5+= 47.Re8 Kf5 48.Ba7 Ra5 49.Bd4 Ra2 50.Kb1 Rh2 51.Rh8 Nd6 52.Rf8 Ne4 53.Rh8 Nd6 54.Rf8 Ne4 (54...Ke4 55.Rf6 Nf5 56.h6+=) 55.Rh8 Kg5 Attacking the isolated pawn on h5 56.Rg8 Kf5 57.Rh8 Kg5 (57...Re2 58.Kc1+=) 58.Rg8= Kh6 59.Bf6 Nf6 60.Rg6 Kh5 61.Rf6 Re2 62.Rc6 Re3 63.Rc4 ½–½. Krivoshapko,Alexander – Sadovnichuk,Sergey, Half Omsk, 2009.

8.Nf3 Ne7 9.d4 Nd7 10.Be2 0-0 11.0-0 Nb6 12.de5+=.

8.Qg4 g6 9.Bc4 (9.Rd1 f5 10.Qf3 c6=) 9...Qd7 (9...Bc4 10.Qc4 a6 11.Ne4=) 10.Qe4 (10.Qf3 c6 11.Bf7 Kf7=) 10...c6 11.f4 (11.Bf7 Kf7 12.Nf3 cb5=) 11...Qf5 (11...Bc4 12.Qc4 a6 13.b6=) 12.Nf3 (12.Bf7 Kf7 13.fe5 Qe5+=) 12...Bc4= 13.Qc4 ef4 14.0-0 (better is 14.ef4 Bf4 15.0-0=) 14...Ne7? (better is 14...fe3 15.Rae1 Bc5=) 15.Ne4+- Bc7? (15...Kd7 16.Nf6 Kc8+-) 16.Nf6 (16.Bf6 Rf8 17.Be7 Ke7 18.Qb4 Ke8 19.bc6 Nc6 20.Qb7 Qe4 21.Qa8 Ke7+-) 16...Kd8 17.Nd4 (17.Nd4 Qf6 18.Nc6 bc6 19.Bf6+-) 1–0. pcmvr (2780) – iivanov (2590), net–chess.com, 2006.

8.Qg4 Bg6 9.Nf3 Qd7 10.Qd7 Nd7 11.d4 Ne7 12.Rd1=.

8.Qg4 Bg6 9.h4 Nh6 10.Qf3 c6 11.Bc4 Bf7 12.Bf7 Nf7 13.Nge2 Qb6 (13...0-0 14.d4+=) 14.a4= a5 15.Qg4 0-0 16.Ng3 Qd8 (16...Kh8!?=) 17.Nf5+= g6 18.h5 g5 19.Ne4 Bb4 20.h6 (20.0-0 cb5 21.ab5 Qb6+/– (21...Bd2?? 22.Ba3+-)) 20...Nd7 21.Ng7 Nc5 (21...Nh6 22.Qh3 (22.Rh6?! Kg7 23.Qh5 Rh8=) 22...Kg7 23.Qh6 Kf7 24.Qh7 Ke6 25.Rh6+/–) 22.Ne6+/– Ne6 23.Qe6 Be7? (better is 23...Kh8 24.bc6 bc6 25.Qf6 Qf6 26.Nf6 Rfd8+/–) 24.Ba3+- Re8 25.Be7 Qe7 (25...Re7 26.Qf6 (26.Nf6?! Kh8 27.Qg4 cb5+/–) 26...Qf8 27.bc6 bc6 28.Qc6+-) 26.Qf6 (26.Nf6?! Kh8 27.Qe7 Re7 28.bc6 bc6+-) 26...Nh8 27.bc6 (27.Qg5?! Qg5 28.Ng5 cb5 29.ab5 Nf7+-) 27...bc6 28.Rc1 Rac8 29.Rh5 Ng6 30.Rg5 Rc7 31.Rc5 Qe6 (31...Ra7 32.Qc6 Kh8 33.Qf6 Qf6 34.Nf6+-) 32.Rce5 (32.Rce5 Qe5 33.Re5 Ne5 34.Qg5 Kf8 35.Nf6+-; worse is 32.Ra5 Qf7+-) 1–0. Novikov,Konstantin Ivan (2225) – Priklonsky,Elektron (2110), Rassadnev mem, 2006.

8.Qg4 Kf8

9.Bc4 Nh6= 10.Qe2 Nd7 (10...a6 11.Bf7 Kf7 12.Qc4 Ke8 13.Nf3=) 11.Nf3+= Bc4 12.Qc4 Nb6 13.Qb3 Qe7 14.0-0 Rd8 15.Ne4 Nd7 16.Rac1 Nb6 17.d4 ed4 (better is 17...Qf7!?+/–) 18.Nd6+- cd6 19.Nd4 (19.Nd4 Re8 20.Rfd1+-) 1–0. Yates,Normajean (1945) – Czekaj,Christophe (1660), FICGS, 2008.

9.Rd1 a6+=.

9.Nge2 a6 10.d4+=.

9.Nge2 Nd7 10.Ng3 (10.d4 a6+=) 10...Nh6 (10...Ne7 11.Qf3+=) 11.Qf3 Qc8 (11...Rb8 12.Be2+=) 12.Nge4 (12.Be2 Ke8+=) 12...f5 (12...Be7 13.d4+=) 13.Nd6+/– cd6 14.Be2 (14.Rc1 Nb6+/–) 14...Nf6 15.0-0 (better is 15.Qg3!?+/–) 15...Bh5= 16.Qh3 Be2 17.Ne2 Qd7 (17...Qc4 18.Nc3=) 18.a4+= Kf7 19.f4 e4 20.Qh4 Qe7 21.Bd4 (21.Nd4 Rhc8+=) 21...a6 22.b6 Rhc8 23.Rfc1 Nhg8 (23...Nd5 24.Qh5 Kg8 25.a5+=) 24.h3 (24.Ng3 Nh6+/–) 24...h5 (24...a5 25.Ng3 Qd7 26.Kh2+=) 25.a5+/– g6 26.Bb2 (26.Nc3!?+/–) 26...Nd5 (26...Nd7 27.Qg3+=) 27.Qe7 (27.Qg3 Nb4+=) 27...Nge7= 28.Ba3 White gets the initiative 28...Ke6 29.Nd4 Kd7 30.Kf2 Nc6 (30...Rg8 31.Bb2=) 31.Nc6 Rc6 (31...bc6?? 32.b7+-) 32.Rc6 Kc6 33.Rc1 Kb5 (better is 33...Kd7!?=) 34.Bd6+/– Ka5 (34...Nf6 35.Be7 Ng8 36.Rc5 Kb4 37.Rc8 Ne7 38.Ra8 Ka5 39.Re8+-) 35.Rc5 Kb6 36.Rd5 Kc6 37.Rd4 a5 38.Ba3 (38.Be5 Kc5+-) 38...a4 (38...b5!?+/–) 39.Rd6+- Kb5 40.Ke2 (40.Rg6 Rd8 41.Ke2 Rd3+-) 40...Rc8 (better is 40...Ra6 41.Rd7 Rb6+-) 41.Rg6 Rc2 (41...Kc4 42.Rb6 Rg8 43.Rb4 Kd5+-) 42.Rf6 Ra2 (42...Kc4 43.Rf5 Kb3 44.Bf8+-) 43.Rf5 (better is 43.Be7+-) 43...Kc4 (43...Kc6 44.Be7 Kd7+-) 44.Rc5 Kb3 45.Rc3 1–0. Neuwald,Volker – Rimpler,Rafael, Baden–ch HT2, 2002.

9.Nf3 Nd7+=.

5.c4 Ne7

6.Qb3 Be6 7.d4 e4?? 8.c5+- 0-0 9.cd6 cd6 10.Nd2 f5 11.f4 ef3 (11...Rf6+-) 12.Ngf3 f4 13.e4 (13.ef4 Qd7+-) 13...Qd7 (13...Bf7 14.Qa3+-) 14.Ng5 Bg4 15.h3 Bh5 16.ed5 (16.Bd3 h6 17.Ngf3 Kh8+-) 16...Nf5 17.Ne6 Re8 18.Bc4 Ng3 19.Kf2 (19.Rg1 Qe7+-) 19...Nh1 20.Rh1 Qf7 (20...Qe7 21.Rf1+- (21.Nf4?! Qf6 22.Qg3 g5+=)) 21.Rf1 Nd7 22.Kg1 f3 23.Nf3 Qe7 24.Ba3 Nb6 25.Ne5 (better 25.Bd3 Bf3 26.Rf3+-) 25...Rac8?? (25...Qh4 26.Ng4 Bg4 27.hg4 Qe7+-) 26.Bd3 (better 26.Qg3 Nc4 27.Rf7 Qf7 28.Nf7+-) 26...Nd5 (26...Qh4 27.Kh2 de5 28.g3+-) 27.Qd5 (better 27.Ng5! Qg5 28.Qd5 Kh8 29.Nf7 Bf7 30.Qg5+-) 27...Qe6 28.Qe6 Re6 29.Bf5 Re5 (29...Rce8 30.Be6 Re6+-) 30.Bc8 (30.de5 Rb8 31.Be6 Kh8 32.ed6 Be2+-) 30...Re8 31.Bb7 Be2 32.Bd5 Kh8 33.Rf7 (33.Bd6?! Bf1 34.Bc6 Re1+-) 33...Bb5 (33...Rd8 34.Ra7 Bb5 35.Bd6+-) 34.Bd6 (34.Bd6 Re1 35.Kh2+-) 1-0. zembelek (2205) - tranca (2060), Rated Blitz game, lichess.org, 2014.

6.Nc3 0-0 7.cd5 f5 8.Nh3 Ng6 9.d3 f4 10.e4 Nh4 11.Ng1 f3 12.Nf3 Bg4 13.Be2 Ng2 14.Kd2 Qf6 15.Rg1 Bf3 16.Bf3 Nh4 17.Rg3?? (better is 17.Bg4=) 17...Nf3–+ 18.Ke3 (18.Qf3 Qf3 19.Rf3 Rf3 20.Ke2–+) 18...Qf4 19.Ke2 Nd4 20.Kf1 (20.Ke1 Qf2) 20…Qf2 0–1. Garcia,Eric – Wall,Bill, chess.com, 2009.

6.Nc3 c6 7.a4 0-0 8.Nf3 Be6 9.bc6 bc6 10.cd5 (10.Rc1 Nd7-/+) 10...cd5-/+ 11.Nb5 Nbc6 (11...Bb4 12.Be2-/+) 12.Nd6 Qd6 13.Be2 Rab8 14.Ba3 Qd7 (14...Nb4 15.0-0=+) 15.0-0= Rfc8 16.Bb5 (16.Ba6 Rc7=) 16...Qb7 (16...Nf5 17.d4 e4 18.Nd2=) 17.Rb1 (17.Bd6 Ra8=) 17...Qc7 (17...e4 18.Nd4 Nd4 19.ed4=) 18.Ba6 Rb1 19.Qb1 Rb8 20.Qc2 Qb6 21.Bb5 a6 22.Bc5 Qb7 (22...Qa5 23.Be2=) 23.Be2 e4 24.Nd4 Nd4 25.Bd4 Nc6 26.Bc5 a5 27.d4 Nb4 28.Qc3 Bd7 29.Ra1 g6 30.Qb3 (30.h3 Nd3 31.Bd3 ed3 32.Qd3 Bf5+=) 30...Kg7 (30...Nd3 31.Qb7 Rb7 32.Be7=) 31.h3 (31.Bb4 ab4 32.Rb1 Kf7+=) 31...Bc6 (31...Nd3 32.Qb7 Rb7=) 32.Bb5 (better 32.Rb1+=) 32...Bb5-/+ 33.ab5 Qb5 34.Qd5?? (better 34.Qc3 Rb7 35.Qd2-/+) 34…Nd5-+ (34...Nd5 35.Bd6 Rc8-+) 0-1. Butterbrot (2110) - Narekhovakimyan (2130), Rated Blitz game, lichess.org, 2017.

6.Nc3 c6 7.Qh5 Kf8 (7...g6 8.Qf3=) 8.bc6 (8.cd5 Nd5 9.bc6 bc6+=) 8...bc6 (8...Nbc6 9.cd5 Nb4 10.Rc1 Ned5 11.Nd5 Nd5 12.Bc4=) 9.cd5 cd5 10.Rc1 Be6 11.Nb5 Bf7 (11...Nbc6 12.Nf3=) 12.Qe2 a6 (12...Nbc6 13.Nd6 Qd6 14.Nf3=) 13.Nd6+= Qd6 14.d4 Nbc6 15.de5 fe5 16.Qd2 a5 Black prepares d4 (16...Bg6 17.Nf3 Kf7 18.Ng5 Ke8 19.Bc4+=) 17.Nf3 Ng6 (17...Kg8 18.a3+=) 18.Qc3 (18.Bb5 Nge7+/–) 18...Nb4 (18...Be8 19.Bd3 Kg8 20.0-0+/–) 19.a3 (19.Ne5 Ne5 20.Qe5 Qe5 21.Be5 Na2+-) 19...d4 (19...Na2 20.Qc7 Qc7 21.Rc7+/–) 20.ed4+- ed4 21.Qd4 Qd4 22.Bd4 Nd5 23.Bb5 (23.Kd2 Ngf4+-) 23...Ndf4 (23...Rb8 24.Rc5+-) 24.Ng5 (24.Bc5!? Kg8 25.g3+-) 24...Ng2+/– 25.Kf1 Bd5 (better is 25...N2h4 26.Rc7 Ne7+-) 26.Rc7 N2f4 27.Bg7 (27.Bg7 Kg8 28.Rg1+-) 1–0. pcmvr (2530) – wstanevans (2150), net–chess.com, 2006.

6.d4 0-0?? 7.c5+- e4 (7...Bc5 8.dc5 Bf5+-) 8.cd6 Qd6 9.Nc3 f5 (9...Qb4 10.Qc1 Rf7 11.Ba3+-) 10.Nh3 Ng6 11.a4 f4 (11...Rf6+-) 12.Ba3 c5 (12...Qd8 13.Bf8 Bh3 14.Bc5+-) 13.Bc5 (worse is 13.dc5 Qd8 14.Qd5 Qd5 15.Nd5 Bh3+-) 13...Qc7 14.Nd5 Qd7 (14...Qa5 15.Qd2 Qd2 16.Kd2+-) 15.Bc4 Kh8 16.Bf8 f3 17.Nhf4 Nf8 18.Rg1 Qg4 (18...fg2 19.Qc2 Qd8 20.Qe4+-) 19.Kf1 (better is 19.Nc7 Qh4+-) 19...fg2 20.Rg2 Qh4 (20...Qd1 21.Rd1 Nbd7 22.Bb3+-) 21.Qh5 (better is 21.Nc7 Nbd7 22.Na8 Nf6+-) 21...Qh5 22.Nh5 Bh3 (22...Be6 23.Rg7 Nbd7 24.Re7+-) 23.Nc7 Na6 24.Na8 Nb4 25.Nf4 Bg2 26.Kg2 Nc2 27.Rc1 Na3 28.Bd5 g5 29.Ne6 (29.Ne6 Ne6 30.Be6+-) 1–0. Fournier,Frederic – Baldeck Nicolas, Ch Club, 1996.

6.d4 ed4 7.Bd4 c5 =.

6.Nf3 dc4 7.Bc4 Nd7 8.a4 Nb6 (8...e4 9.Nh4 Be5 10.Bc3 Bc3 11.Nc3=) 9.Qe2 (9.Bb3 a6=) 9...Nc4 10.Qc4 Ng6 11.Nc3 Qe7 (11...f5 12.d3=) 12.h4 (12.Nd5!? Qf7 13.Rc1=) 12...Be6=+ 13.Qd3 Qf7 (13...0-0-0 14.Qc2=+) 14.Ne4 0-0 (14...Bb4 15.h5 Ne7 16.Ba3=) 15.h5= Ne7 16.Nd6 (16.Qd6 cd6 17.Nd6 Rfc8 18.Nf7 Kf7+/-) 16...cd6= 17.Qd6 Rfd8 18.Qc5 Rac8 (18...Bd5 19.d4 Rac8 20.Qb4=) 19.Qb4 (19.Qa7!? Nd5 20.h6+=) 19...Bc4 20.Ba3 (20.h6 g6=) 20...Nd5 21.Qb2 Qe6 22.Rc1 (22.h6 Nf4! 23.ef4 ef4 24.Ne5 Rd5-+ (24...Qe5?! 25.Qe5 fe5 26.Rh5=)) 22...Qf5 (better 22...Nf4 23.ef4 ef4 24.Ne5 Rd5-+ (24...Qe5?! 25.Qe5 fe5 26.h6=+)) 23.Nh4?? (better 23.Qb1 Qg4 24.Rh2-/+) 23...Qd3-+ (23...Qh5?! 24.f3-/+) 24.Rc4 Rc4 25.f3 (25.Nf3 Rc2 26.Qc2 Qc2-+ (26...Qa3 27.0-0+/-)) 25…Rc2 (25...Rc2 26.Qc2 Qc2-+ (26...Qa3 27.0-0+=)) 0-1. BitChess (2325) - Rijeka (2485), Rated Bullet game, lichess.org, 2016.

6.Nf3 c6 7.a4 (7.d4 e4 8.Nfd2 0-0=) 7...Be6 (7...0-0 8.d4 e4 9.Nfd2+=) 8.Qb3 (8.d4 e4 9.Nfd2 0-0+=) 8...0-0 9.Nc3 Nd7 10.cd5 (10.bc6 Nc5 11.Qd1 bc6+=) 10...Nc5–/+ 11.Qa2 (11.Qc2 Nd5 12.d4 Nb4–/+) 11...cd5 12.d4 ed4 (12...Nd7 13.Ba3 Ba3 14.Qa3+=) 13.Nd4= Bf7 (13...Qa5 14.Ne6 Ne6 15.Rc1=) 14.Be2 Qc7 15.g3 Rac8 16.0-0 Ne4 (16...Be5=) 17.Ne4 (better is 17.Rac1!? Qa5 18.Qb3=) 17...de4–/+ 18.Ne6 Qb6 (18...Qc2!? 19.Bg4 Rfd8+=) 19.a5= Qc7 20.Nc7 (20.Rac1 Qb8=) 20...Ba2 21.Ra2 Rc7 22.b6 (22.Bd4 Ra8+=) 22...ab6 23.ab6 (23.Rd1 Rc2 24.Rd6 Re2 25.Rb6 Rd8 26.Rb7 Rd1 27.Kg2 Rdd2=) 23...Rc6 (23...Rc2 24.Bg4 f5 25.Bd1+=) 24.Bd4= Bc5 (24...Rfc8 25.f3=) 25.Bb5+= Bd4 26.Bc6 Nc6 27.ed4 Rd8 28.Rd1 (better is 28.Ra7 Na7 29.ba7+/–) 28...Rd5? (better is 28...Nd4!? 29.Rda1 Nf3 30.Kg2 Rd6+=) 29.Ra4+- Kf7 30.Kg2 Ke6 31.Re1 (31.h4 f5 32.h5 g5+-) 31...Rb5 (31...f5 32.f3 Rd4 33.Rd4 Nd4 34.fe4 Nc6+-) 32.Re4 Kd6 (32...Kd5 33.Rg4 g5 34.f4+=) 33.Rh4 (33.Rg4 g6+-) 33...h6 34.Ra8 (better is 34.Rg4 g5 35.Re4 f5+-) 34...Ne7? (34...Rb6 35.Rg8 Kd5 36.Rg7 h5+-) 35.Rd8 Kc6 36.Re8 (better is 36.Re4 Rd5 37.Re6 (37.Re7?! Rd8 38.Rg7 Rd4+/–) 37...Kb5 38.Red6+- (38.Re7?! Rd8 39.Rg7 Kb6+-)) 36...Kd7 37.Rb8 Rb6 38.Rg4 (38.Re4 f5 39.Re5 Nc6=) 38...g5 39.d5 (better is 39.Re4!?+-) 39...Nd5+= 40.Rd4 Kc7 41.Rh8 Rd6 42.Rc4 Rc6 (42...Kb6 43.Rh6 Kb5 44.Rc8+-) 43.Rc6 Kc6 (43...bc6 44.Kf3+/–) 44.Rh6+- b5 45.Kf1 (45.h4 Kc5+-) 45...b4 46.Ke1 (46.h4 Kc5+/–) 46...Kd6 (46...b3 47.h4+/–) 47.Kd2 Ke5 (47...b3 48.h4 b2 49.Kc2+-) 48.h4 gh4 (48...b3 49.h5+/–) 49.gh4 Kf5 (49...b3 50.h5+/–) 50.Rh8 Kg6 (50...Nf4 51.Rb8 Nd5 52.h5+-) 51.f3 (51.h5 Kf5+-) 51...Ne7 (51...Kf5 52.h5+-) 52.h5 Kg7 53.Re8 (53.Rb8 Nd5+-) 53...Nf5 54.Re4 Kh6 55.Rb4 Kh5 56.Rg4 Nh4 57.Ke3 (57.Ke3 Nf5 58.Ke4 Nd6 59.Kd5+-) 1–0. Woronowicz,Zbigniew – Bobon,Andrzej, corr Poland, 1995.

6.Nf3 Be6 7.d4 e4 8.Nfd2 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Bd6 6.d4 e4 7.Nfd2 Ne7 8.c4).

6.Nf3 Bg4 7.Be2 dc4 8.Qc2 c6 (8...Qd7 A) 9.Bc4 a6 (9...Bf3 10.gf3 a6 11.Qb3 ab5 12.Bb5 c6 13.Bc4=+) 10.Nc3 (10.ba6 Na6 11.Nc3 Bf3 12.gf3 Qh3 13.Ke2=+) 10...ab5 11.Nb5 Nbc6 12.d4 Bf3 13.gf3=+; B) 9.Qc4 Bf5 10.Nc3 (10.d4 e4 11.Nfd2 Be6 12.Qa4 f5 13.Nb3=; 10.0-0 a6 11.Nc3 ab5 12.Nb5 Nbc6 13.d4=) 10...Be6 11.Qe4 c5 12.0-0 f5 13.Qc2=; 8...Nd7 9.Qc4 Bf5 10.e4 Bg6 11.Qc2 Nd5 12.d3 Nf4 13.0-0=+) 9.a4 (9.Qc4 A) 9...Qc8 10.Nc3 (10.d4 e4 11.Nfd2 Be2 12.Qe2 f5 13.Ba3=) 10...Be6 11.Qa4 Nd5 12.Ne4 Be7 13.d4=; B) 9...Bf5= 10.e4 Bg6 11.0-0 a6 12.a4 ab5 13.ab5=) 9...Nd7 (9...cb5 10.ab5 Nd7 11.Qc4 Bf5 12.Nc3 Nb6 13.Qb3–/+; 9...Nd5 10.h3 (10.Bc4 Nb4 11.Qb3 e4 12.Nd4 Nd7 13.Bf7=+) 10...Be6 11.Bc4 Nb4 12.Qc3 Qd7 13.0-0=+) 10.Qc4 Nc5?? (better is 10...Bf5=+ 11.0-0 cb5 12.ab5 Nb6 13.Qb3=) 11.Qg4+- 1–0. Koerner – Stabenow,Juergen, corr SOK–87–08, 1987.

6.Qh5 g6 7.Qf3 Bf5 8.cd5 (8.g4 Be4 9.Qf6–+) 8...e4=+ 9.Qe2 Nd5 10.g4 Be6 11.Bg2 0-0 (11...Nd7 12.Be4 Nc5 13.d3=) 12.Be4 c6 13.Nc3 Nc3 14.Bc3 Qc7 (14...Qd7 15.h3=) 15.h3 a6 16.a4 (16.bc6 Nc6 17.d3 Rac8+=) 16...ab5= 17.ab5 Ra1 18.Ba1 f5 (better is 18...cb5!? 19.Bb2 b4=) 19.gf5+/– gf5 20.Bf3 (20.Nf3 fe4 21.Rg1 Kf7 22.Rg7 Ke8 23.Rc7 ef3 24.Qd3 Bc7 25.Qe4=+) 20...cb5+= 21.Bb2 Bc4 22.Qd1 Nc6 23.Ne2 Bh2? (23...Be5 24.Rg1 Kh8+/–) 24.Qa1?? (better is 24.Nf4 Qf4 25.ef4 Re8 26.Be2 Be2 27.Qe2 Re2 28.Ke2 Bf4 29.Rg1 Kf7 30.Rg7 Ke6 31.Rh7+-) 24...Nb4= 25.Kf1 Nc6 (25...Nc2 26.Qa7=) 26.Bh5 (better is 26.d3!? Bd3 27.Bd5 Rf7 28.Ke1+/– (28.Bf7?! Kf7 29.f4 Bg3+-)) 26...Bd5= 27.f3 Nb4 (27...b4 28.Kf2 Rc8 29.Qb1+/–) 28.Kg2 Bd6? (better is 28...Nc2 29.Qb1 Bd6+=) 29.Rg1+- 1–0. Psion – Psion, 4 Min/Zug, 1990.

6.cd5 Nd5

7.Nc3 Nc3 8.Bc3 Be6 9.Nf3 (9.d4 ed4 10.Qd4 Nd7=) 9...0-0 (9...Nd7 10.d4=) 10.d4 (10.Qc2 Bd5=) 10...ed4 (10...e4 11.Nd2 f5 12.Bc4 Bc4 13.Nc4=) 11.Nd4+= (worse is 11.Bd4 Bb4 12.Nd2 c5 13.bc6 Nc6+= (13...bc6?! 14.a3 c5 15.ab4 cd4 16.Bc4 Bc4 17.Nc4=)) 11...Bf7 (11...Bd5 12.Bd3 Be5 13.Qc2+=) 12.Be2 (12.Bd3 c5 13.bc6 Nc6+=) 12...Nd7 ½–½. Smirnov,Vladimir S (2250) – Anjuhin,Alex (2385), Ladoga Summer, Novaya Ladoga RUS (6), 2007.

7.Nc3 Be6 8.Nd5 Bd5 9.Nf3 0-0 10.a4 b6 11.Rc1 (11.Qc2 Qe8=) 11...Kh8 12.Be2 Nd7 (12...a6 13.Qc2=+) 13.0-0 Qe7 14.d3 Rac8 15.e4 Be6 (15...Bb7!?=) 16.d4+= Bg4 17.d5 f5 18.ef5 (18.Nd2 Be2 19.Qe2+=) 18...Rf5 (18...Bf5!? 19.Rc3 Nc5=) 19.Nh4!+/- Be2? (19...Qh4 20.Bg4 Discovered attack) 20.Nf5+- Qf6 21.Qe2 Qf5 22.Rfe1 Rf8 23.Rcd1 (23.Qc2 Qh5+-) 23...Bc5 (23...Nc5!? 24.f3 (24.Be5?! Be5 25.Qe5 Qf2 26.Kh1 Nd3+/-) 24...Na4 25.Be5+-) 24.Rf1 h6 25.Rd3 e4 26.Rd2 (26.Rdd1!? Ne5 27.Be5 Qe5+-) 26...e3+/- 27.fe3?? (better 27.Rd3 ef2 28.Kh1+/-) 27...Be3-+ 28.Kh1 (28.Rf2 Bf2 29.Kh1-+) 28…Qf1 (28...Qf1 29.Qf1 Rf1) 0-1. brucepeng (2005) - Alv73 (2045), lichess.org, 2021.

7.Bc4 Nb6 8.Qb3 Nc4–/+ 9.Qc4 Nd7 10.Nc3 Nb6 11.Qb3 Bf5 12.Nf3 Bd3–/+ 13.Nd5? Bc4–+ (13...Bc4 14.Nb6 Bb3 15.Na8 Be6–+ (15...Qa8?! 16.ab3 Kf7 17.e4–+)) 0–1. gtate (2020) – goldbachconjecture (2655), net–chess.com, 2006.

7.Bc4 Nb6 8.Bb3 Bd7 9.Nf3 Bb5–/+ 10.Nc3 Bd7 11.0-0 Nc6 12.d4 Qe7 13.Nd5 Nd5–/+ 14.Bd5 0-0-0 15.a4 Nb4 16.Ba3?? Nd5–+ 17.Bd6 Qd6 18.Qb3 Bc6 19.Rfd1 e4 20.Nd2 f5 21.Nc4 Qb4 22.Rdb1 Qb3 23.Rb3 Rhe8 24.a5 Nf6 25.Ne5 Bd5 26.Rb2 Nd7 0–1. gtate (1925) – quetzalkoatl (2710), net–chess.com, 2006.

7.Nf3 Be6 8.e4 Nf4 9.d4 Nd7 10.Nbd2 Qe7 (10...0-0 11.Qc2+=) 11.d5 Bf7 12.g3 Nh5 13.Be2 g6 14.0-0 Ng7 (14...f5 15.Bc4=) 15.Nc4 0-0 (15...Bc5 16.Qc2+=) 16.Nd6 cd6 17.Nd2 Nc5 18.f4 ef4 19.Rf4 f5 20.ef5 Nf5 21.Nf1 Be8 (21...Qg5 22.Bg4 Rae8 23.Rc1+=) 22.Qd2 Na4?? (better is 22...Bf7+=) 23.Ra4+- (23.Ra4 a6 24.Re1+-) 1–0. Dopper,Johan – Regeer,Gerard, corr, 1990.

6.Nf3 0-0

7.a4 c6 8.Be2 e4 9.Nd4 c5 10.Nb3 f5 (10...Be6!? 11.cd5 Nd5+=) 11.Nc3+= Be6 12.cd5 Nd5 (12...Bd5? 13.Nd5 Nd5 14.Bc4+-) 13.Bc4 Nc7 14.Qe2 (14.Na5 Qd7 15.Be6 Ne6+=) 14...Kh8 (14...Nd7 15.Na5 Ne5 16.Be6 Ne6 17.Nb7+=) 15.d4 Nd7 16.Be6 Ne6 17.Rd1 (17.d5 Ng5 18.h4+=) 17...Qb8 (17...cd4 18.Nd4 Nd4 19.Rd4+=) 18.dc5 (better is 18.d5!? Nd8 19.g4+=) 18...Ndc5 19.Nc1 (19.Nc5!? Nc5 20.f4–/+) 19...Be5 20.Nd5 (20.f4!? ef3! 21.gf3–/+) 20...Na4–+ 21.Be5 Qe5 22.0-0 Nac5 (22...Nb2!? 23.Rd2 Rad8 24.Rb2 Rd5 25.Ra2–+) 23.Qc4 a5 (23...Rac8 24.h3–/+) 24.Nb6 (24.ba6!? Ra6 25.Nf4–/+) 24...Rad8–+ 25.Rd5 Rd5 26.Qd5 Qd5 27.Nd5 a4 28.Na2 Rd8 29.Nb6 (29.Nac3 Nb3 30.Rb1 Nec5–+) 29...Rd3 30.Nc4 Rb3 31.Nd6 (31.b6 g6–+) 31...g6 32.Rd1 (32.Ra1 Nc7 33.Kf1 Nb5 34.Nb5 Rb5–+) 32...Kg7 (32...Rb2 33.Nc3 a3 34.b6–+) 33.g3 Ng5 34.Ne8 (34.Ra1 Kf6–+) 34...Kf7 35.Nc7 (35.Nd6 Ke6 36.Kg2–+) 35...Nd3 36.Nd5 (36.Rf1 Ra3 37.Ra1 Nf3 38.Kg2 Nfe1 39.Kf1 Nc2–+) 36...Nf3 (36...Nf3 37.Kg2 Rb2 38.Rd3 Ne1 39.Kf1 Nd3–+) 0–1. algernon (2510) – wvmaniac (2515), net–chess.com, 2015.

7.d4 ed4 8.Qd4 c5 9.Qd2 dc4 (9...Be6 10.Nc3 dc4 11.Rd1=) 10.Bc4+= Kh8 11.0-0 Qc7 (11...Qb6 12.Bc3 Qc7 13.Rd1+=) 12.Rd1 Rd8 13.Kh1 (13.Be5 Nf5 14.Bf4 Qd7+=) 13...Bf5 (13...Bg4 14.Nc3 Rd7 15.Qe2+=) 14.Nc3+/– Qc8 15.Qe2 a6 16.ba6 Na6 17.Nb5 Qc6 18.e4 Bg4 19.Nd6 Rd6 20.Rd6 Qd6 21.e5 fe5 22.Qe5 Qe5 23.Ne5 (worse is 23.Be5 Nc6 24.Bc3 Bf3 25.gf3 Nc7=) 23...Bh5 24.Re1 Rd8 25.Nd3 Nd5 26.a3 Bg6 (26...b5 27.Bb5 Nac7 28.Bc6+/–) 27.Ba6 ba6 28.Nc5 Nf4 29.h3 (29.Na6 Nd3 30.Re6 Nb2–+) 29...Rd2 30.Bc3 Rf2 31.Bd4 Rd2 (31...Rg2? 32.Rf1 (32.Na6 Rd2 33.Bc3 Rd3+=) 32...Ra2 33.Rf4+-) 32.Be3 Re2 33.Re2 Ne2 34.Na6 Kg8 (34...Nc3 35.Nc5+/–) 35.a4 Bd3 (35...Ng3 36.Kg1+-) 36.Nc5 Bc4 37.a5 Nc3 (37...Bd5 38.a6+-) 38.a6 Bd5 39.a7 Kf7 40.Nd7 Na4 (40...Bb7 41.Kh2+-) 41.Bd4 Ke7 42.Ne5 g6 43.Nf3 (43.Kg1 Ke6+-) 43...Kd6 44.Ng5 h6 (44...h5 45.Kg1+-) 45.Nf7! Kc7 (45...Bf7 46.a8Q) 46.Ne5 (46.Nh6 Nb6+-) 46...g5 47.Ng4 Nb6 (47...Kb7 48.Nh6 Nb6 49.Kh2+-) 48.Nh6 Kb7 49.Bb6 Kb6 50.Nf7! g4 (50...Bf7 51.a8Q) 51.h4 (51.hg4?! Ka7 52.Nh6 Kb6+-) 51...Ka7 52.Ng5 1–0. pereira – Dimitri, internet, 2006.

7.d4 e4 8.Nfd2 f5 9.Be2?? Be6?? 10.0-0?? Ng6 11.Qb3 Ne7?? 12.c5+- Bh2 13.Kh2 Ng6 14.Rh1 Qg5 15.Kg1 Nh4 16.g3 Ng6 17.Rh5 Qf6 18.Na3 Nd7 19.c6 bc6 20.bc6 Nb6 21.Nb5 Qf7 22.Rc1 Ne7 23.Rh2 g5?! 24.Nc7 Rac8 25.Ne6 Qe6 26.Ba3 Rf7 27.Be7 Re7 28.Kg2 Rc6 29.Qd1 Rc1 30.Qc1 Qg6 31.Bh5 Qg7 32.Qc6 f4 33.Bg4 f3 34.Nf3! ef3 35.Bf3 Rd7? 36.Bg4 Re7 37.Be6 Kh8? 38.Bd5 Nd5 39.Qd5 Qg6 40.Rh1 1–0. valpa – KrylovaOO, playchess.de, 2002.

7.Be2=+.

5.d4

5.d4 (--> 4.d4 Bd6 5.e3).

5.d4 e4 (--> 4.d4 e4 5.e3 Bd6).

5.Nf3 Ne7

6.a4 c5 7.c4 d4 8.ed4 ed4 9.d3 0-0 10.Be2 Re8 11.0-0 Bg4 12.Nbd2 Nd7 13.Ne4 Bc7 14.h3 Bh5 15.Ba3 b6 16.Bc1 Ne5 17.Ne5 Be2 18.Qe2 Be5 19.a5 Ng6 20.ab6 ab6 21.Ra8= Qa8 22.Qg4 Qc8 23.Qd1 Qf5 24.Re1 Ra8 25.g4 Qd7 26.Ng3 Bg3 27.fg3 Ne5 28.Rf1 Ra2 29.Bf4 Qb7 30.Rf2 Qa8 31.Be5?? fe5 32.Ra2= Qa2 33.Qf3 Qb1 34.Kg2 Qc2 35.Kf1 Qc1 36.Kf2 Qc2 37.Qe2 Qe2 38.Ke2 Kf7 39.Kf3 Ke6 40.Ke4 g6 41.g5 Kd6 42.g4 Ke6 43.h4 Kd6 44.h5 Ke6 45.Kf3?? Kd6?? 46.h6 Ke6 47.Ke4 Kd6 48.Kf3 Ke6 49.Kg3?? Kd6 50.Kf2?? Ke6 51.Ke2?? Kd6 52.Kf3= ½–½. fagus54 – egomi, internet, 2011.

6.c4 c6 7.Nc3 Be6 (7...0-0 8.d4=) 8.Qb3 Qd7 (8...0-0 9.d4+=) 9.cd5 (9.bc6 A) 9...Nbc6? 10.cd5 (10.Nd5?! Rc8=) 10...Nd5 11.Nd5+-; B) worse is 9...Qc6 10.cd5 Bd5 11.Nd5 Qd5 12.Bc4+-; C) 9...bc6 10.d4 Na6 11.cd5 Nd5=) 9...cd5 10.Qa4 (10.d4 e4 11.Nd2 0-0=) 10...0-0 (10...Nc8 11.Qh4+=) 11.Be2 Nc8 (11...Rc8 12.0-0=) 12.Rc1 (12.Qh4 Nb6=) 12...Nb6+= 13.Qc2 Qf7 (13...Rc8 14.0-0+=) 14.0-0 N8d7 15.a4 (15.d4 e4 16.Nd2 Qg6+=) 15...Rac8 16.a5 Nc4 17.Bc4 Rc4 18.d3 Rg4 Black prepares the advance e4 (18...Rc7 19.Qe2–/+) 19.Ne2+= e4 (19...Qg6 20.Ng3+=) 20.de4= de4 21.Nfd4 Bd5 22.Ng3 (better is 22.h3 Rg5 23.Nf4=) 22...g6 (22...Bg3 23.fg3 Ne5 24.Ba3=) 23.Qe2 (better is 23.h3!? Rg3 24.fg3 Bg3 25.Ne2+/–) 23...Rh4= 24.Rc2 (24.Rfd1 Ne5=) 24...Ne5 25.Ngf5? (better is 25.Rd1=) 25...gf5–+ 26.Nf5 Nf3! 27.gf3 ef3 28.Qd2 (28.Ng3 fe2 29.Re2–+) 28...Rh2 29.Nd6 Rg2 0–1. Zilles,Paul (1780) – Grochal,Joey (2200), Belgian Championship, 2016.

6.c4 c6 7.bc6 bc6 8.cd5 cd5 9.Qb3 Ba3?? (better 9...Nbc6-/+) 10.Ba3+- Kf7 (10...Nbc6 11.Bb5 Kf7 12.Nc3+-) 11.Ke2. opperwezen (2655) - TwelveTeen (2720), lichess.org, 2018.

6.c4 c6 7.d4 e4 8.Nfd2 0-0=.

6.c4 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Bd6 6.c4 Ne7).

6.d4 Nd7 7.c4 e4 8.Nfd2 c6 9.Qb3 Bc7 10.Nc3 Nf8 11.a4 Nfg6 12.Ba3 a6 (12...Bg4 13.h3 Bf5 14.Be2+=) 13.Be7 (13.Be2 Bf5+=) 13...Ne7= 14.c5 (14.cd5!? cd5 15.Rc1=) 14...ab5–/+ 15.Be2 0-0 (15...Bf5!?+=) 16.Nde4= Bf5 17.Ng3 Bg6 18.0-0 Bg3 19.hg3 Qd7 (19...Qa5!?+=) 20.ab5+/– Nf5 21.Na4 Qe6 22.Bf3 Rfe8 23.bc6 (23.Nb6!? Rab8 24.Ra7+-) 23...bc6+/– 24.Nb6 Ra1 25.Ra1 h5 (25...Qe7 26.Ra6 Rd8 27.g4+/–) 26.Ra8 Ra8 27.Na8 h4 28.Qb8 Kh7 (28...Kf7 29.Qc7 Kf8 30.g4+-) 29.g4 (better is 29.gh4 Ne7 30.Qd6+-) 29...Ne3+/– 30.Qd6 (30.fe3?! Qe3 31.Kh2 Qd4=) 30...Qc8 31.Nb6 (31.fe3?! Qa8 32.Kh2 Bd3=) 31...Qe8 32.fe3 Qe3 33.Kh2 Qd4 34.Nd7 (34.Qc6?! Qe5 35.Kg1 Qe1 36.Kh2 Qe5 37.Kh1 Qe1 38.Kh2 Qg3 39.Kg1 Qe1 40.Kh2=) 34...Bd3 35.Nf8 (35.Qc6?! Qf4 36.Kg1 Qc1 37.Kf2 Qd2 38.Kg1 Qc1 39.Kh2 Qf4 40.Kh1 Qc1 41.Kh2 Qf4=) 35...Kg8 36.Ne6 Qe5 37.Qe5 (37.Kh3!? Kh7 38.Nf8 Kh6 39.Kh4 Qe1 40.Kh3 Qh1 41.Qh2 Qh2 42.Kh2+-) 37...fe5+/– 38.Kg1 (38.Kh3 e4 39.Bd1 e3+/–) 38...e4 (38...Bb5 39.Nc7 Ba4 40.Nd5 cd5 41.Bd5 Kf8 42.Kh2=) 39.Bd1 Bb5 (better is 39...Kf7!? 40.Nd4 e3+/–) 40.Nd4+- Kf7? (40...Kf8 41.Bb3+-) 41.Bb3 (41.Nb5!? cb5 42.Bb3 Ke6+-) 41...Bc4 42.Bc4 dc4 43.Kf2 c3 44.Ke3 (44.Nc6?? c2 45.Ke3 c1Q 46.Ke4 h3 47.gh3 Qh1 48.Kd4 Qc6–+) 44...Kf6 45.Ke4 1–0. Boysan,Ferit – Schiller,Eric (2200), Internet Section, 2004.

6.d4 e4 7.Nfd2 0-0 8.c4 c6 9.bc6 bc6 (worse is 9...Nec6 10.cd5 Nb4 11.Ne4+/–; worse is 9...Nbc6 10.cd5 Nd5 11.Ne4 Bb4 12.Nbd2+=) 10.Nc3 Be6 11.cd5 cd5 12.Nb5 Bb4 13.Rc1 Nbc6 14.Bc3 a6 (14...a5 15.a3 Bc3 16.Nc3=) 15.Nc7 (15.Bb4!? ab5 16.Rc6 Nc6 17.Bf8 Ra2 18.Bg7+=) 15...Qc7= 16.Bb4 Qd7 17.Bc5 f5 18.f4 ef3 19.Nf3 (worse is 19.gf3 f4 20.Rc3 fe3 21.Re3 Rf4–/+) 19...f4 20.ef4 Rf4 21.Be2 Nf5 22.Qd2 Rg4 (22...Re4 23.Rc3+=) 23.0-0+/– h6 24.Qc3 Re4 25.Rf2 g5 26.Bd3 Rg4 27.Rcf1 (27.a3 Rf4+/–) 27...Nd6+/– 28.Nd2 Ne4 (better is 28...Nb7+-) 29.Be4 de4 (29...Re4 30.Ne4 de4+-) 30.d5! Qd5 (30...Qd5 31.Rf8 Mate attack; 30...Bd5 31.Rf8 Mate attack) 31.Rf8 Rf8 32.Rf8 Kh7 33.Qh8 Kg6 34.Rf6 1–0. pcmvr (2100) – ilivanov (2000), net–chess.com, 2006.

6.Be2 0-0 7.d4 e4 8.Nfd2 Be6 9.c4= c6 10.a4 (10.c5 Bc7=) 10...f5 (10...dc4 11.Ne4 a6 12.Nd6 Qd6 13.Ba3+=) 11.g3 (11.c5 Bc7=) 11...g5 (11...dc4 12.Nc4 Bc7 13.0-0=+) 12.Rg1 (12.c5 Bc7=) 12...Ng6 (12...dc4 13.Nc4 Bc7 14.Nc3=+) 13.Qb3 Nd7 14.Nc3 Nf6 15.a5 (15.Ba3 Ba3 16.Ra3 Rc8=) 15...a6 (15...g4 16.a6 Rb8 17.c5=) 16.b6 (16.c5 Be7 17.b6 Qd7=) 16...Qd7 (16...g4 17.h3=) 17.h4 (17.c5 Be7=) 17...h6 (17...g4!?=) 18.hg5+= hg5 19.Ba3 (19.c5 Be7+-) 19...Kg7 (19...Ba3 20.Qa3 Kf7 21.cd5 Bd5 22.Nd5 Nd5 23.Bh5+=) 20.0-0-0 (20.Bd6 Qd6 21.c5 Qe7+-) 20...Rh8 (20...dc4 21.Nc4 Ba3 22.Qa3+=) 21.Rh1 (21.Bd6 Qd6 22.c5 Qe7+-) 21...f4 (21...dc4 22.Nc4 Ba3 23.Qa3+=) 22.gf4 gf4 (22...Ba3 23.Qa3 gf4 24.Rdg1+=) 23.Bd6+- Qd6 24.c5 Qd7 25.ef4 (25.Rdg1 Rh1 26.Rh1 f3=) 25...Nf4 26.Rdg1 (26.f3 Kf7+=) 26...Kf7+= 27.Bf1 (27.Qd1 Rh1 28.Rh1 Ke7+=) 27...Rae8 (27...Rag8 28.Rh8 Rh8 29.Nd1+=) 28.Nd1 (28.Ncb1 Bh3 29.Qg3 N6h5=) 28...Bh3 29.Qe3 Qf5 30.Bh3 Rh3 31.Rh3 Nh3 32.Rh1 (32.Rf1 Nf4 33.f3 ef3 34.Qf3 Nd3 35.Kb1 Qf3 36.Rf3 Re1 37.Rd3 Rd1 38.Kb2 Ne4=) 32...Nf4=+ 33.Nf1 (33.Kb2!?=+) 33...Ng4–/+ 34.Qd2 (better 34.Qb3 Ne2 35.Kb2 Nd4 36.Qc3 Nf2 37.Nfe3–+) 34...Rg8 (better 34...e3 35.Nde3 Nd3 36.Kb1 Ne3–+) 35.Ng3 (35.Nb2 Ke8 36.Rg1 Kd8=+) 35...Qg5 36.Kc2 (36.Rh7 Ke6 37.Nc3 Nf2–+) 36...Rg7 (36...Ke6 37.Ne2 Ne2 38.Qe2 Nf6=) 37.Nf1 (37.Ne3 Ne3 38.fe3 Qg3=+) 37...Qf6 (37...Ne6 38.Nde3=+) 38.Ng3 Nd3 Can f2 get defended? (better 38...Ne6 39.Ne2 Qf3–/+ (39...Nf2 40.Rf1 Rg2 41.Qe3+-)) 39.Nh5? (39.Kb1=+) 39...Qf3?? (better 39...Qd4 40.Kb1 Rh7–+) 40.Ng7= Qh1 41.Nf5 Ke6 1–0. Kalashnikov,Konstantin (2380) – Roppel,Konstantin (2295), Sibiria Region–ch, 2003.

6.Be2 0-0 7.d4 e4 8.Nfd2 f5 9.c4 c6 10.a4 f4 11.ef4 Bf4 12.Qb3 Kh8 13.cd5 cd5 14.Ba3 Bd6 (14...Re8 15.g3 Bh6 16.Bc5+=) 15.f3 (15.0-0 Nf5 16.Qc3 a6=) 15...Nf5+= 16.Qc3 Ba3 17.Na3 Qh4 18.Kd1 Qf2 19.Nc2 Qg2 20.Re1 Nd7 21.fe4 de4 22.Kc1 (22.Ne3!? Ne3 23.Qe3–/+) 22...Nf6–+ 23.Bc4 Bd7 24.Re2 Qg4 25.Ne3 Qf4 (25...Qh5 26.Nf5 Bf5 27.Kb2–+) 26.Kb2 Qd6 27.Nf5 Bf5 28.Rf1 Bg6 29.Rg2 Rac8 30.Rg6 hg6 31.Ne4 Qh2 32.Rf2 Qh4 33.Qc2? (better is 33.Qd2 Qe4 34.Rf6–+) 33...Rc4 (33...Ne4?! 34.Rh2 Rf4 35.Rh4 Rh4 36.Qd3–/+) 34.Qc4 Qe4 35.Qc3 Rd8 (35...Rd8 36.Rd2 g5–+) 0–1. Sieber,M (2035) – Lys,J (2170), Chance Cup Open, 2011.

6.Be2 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Bd6 6.Be2 Ne7).

5.Nf3 Bg4

6.Be2 Qd7 7.a4 Qe6 (7...Ne7 8.0-0=) 8.0-0 (8.Nd4 Be2 (worse is 8...ed4 9.Bg4 f5 10.Bh5 g6 11.Bd4+/–) 9.Ne6 Bd1 10.Kd1 g6=) 8...Bf3 (8...Nh6 9.h3 Bf5 10.d3=) 9.Bf3+= Ne7 10.c4 0-0 11.cd5 Nd5 12.Qb3 e4 13.Be4! Qe4 14.Nc3 Qd3 15.Qd5 Qd5 16.Nd5 Rf7 17.d4 Nd7 18.Rfc1 Nf8 (18...Nb6 19.Nb6 ab6 20.Rc4+-) 19.Ba3 Ba3 20.Ra3 Rc8 21.Rac3 Ne6 22.a5 Rd7 23.Nb4 White prepares a6 23...Ng5 24.a6 ba6 (24...Rb8 25.Rc7 Rc7 26.Rc7 ba6 27.Na6 Rb5 28.f3+-) 25.Na6 Ne4 (25...Ne6 26.g4+-) 26.Rc7 Rdc7 27.Rc7 Rc7 28.Nc7 Nc3 29.Kf1 Kf7 30.f3 Ke7 31.Ke1 Kd7 32.Kd2 Nb1 33.Kc2 Kc7 34.Kb1 Kb6 35.Kb2 Kb5 36.Kb3 h5 (36...g5 37.e4+-) 37.e4 h4 38.g3 h3 (38...g5 39.gh4 gh4 40.f4+-) 39.f4 White plans e5 39...g6 40.e5 f5 (40...fe5 41.fe5 g5 42.e6+-) 41.d5 (41.d5 Kc5 42.d6+-) 1–0. Lippmann,Ulrich (2060) – Zotin,Vladimir (2030), Niedersachsen–ch Seniors, 2004.

6.Be2 Ne7 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nd7 11.c4 (11.d4!?=) 11...dc4–/+ 12.Bc4 e4 13.h3 Bh5 (13...ef3?! 14.hg4 fg2 15.Kg2=) 14.g4 Bg6 (worse is 14...ef3 15.gh5 Nb6 16.Be6 Bh2 17.Kh1+=) 15.Nd4 Nc5 16.f3 ef3 17.Qf3 Be5 18.Na3 (18.g5 Qd6 (worse is 18...fg5 19.Bf7 Bf7 20.Qf7 Kd7 21.Rf5+/–) 19.gf6 Bf6+=) 18...Be4–/+ 19.Qf2 h5 20.Nac2? (better is 20.Nf5 Bf5 21.gf5+=) 20...hg4–+ 21.Ne6 (21.h4 g3 22.Qe2 Rh4 23.Nf3–+) 21...Ne6 (21...Ne6 22.Qe2 Ng5–+) 0–1. Neumann,Frank (1650) – Ahrens,Gerhard (2235), RSX7D – Oldenburg–1, 2007.

5.Qh5 g6=+

6.Qd1 a6 7.a4 (7.d4 e4+=) 7...ab5 (7...Ne7 8.Be2+=) 8.ab5 Ra1 9.Ba1 c6 (9...Ne7 10.Be2+=) 10.c4 (10.d4 e4=) 10...Bd7 (10...Bf5 11.Nf3+=) 11.cd5 (11.d4 ed4 12.Bd4 dc4 13.Bc4 cb5=) 11...cb5 (11...cd5 12.Nc3 Be6 13.d4=) 12.Nf3 (12.Nc3 Qa5+=) 12...Ne7 (12...Qa5 13.Bb2=) 13.Qb3 The isolani on b5 becomes a target (13.Nc3 0-0+=) 13...0-0 (13...Qa5 14.Bb2 Qa4 15.Qa4 ba4 16.e4–/+) 14.Bb5 (14.Nc3 Na6 15.Nb5 Nc5=) 14...Qb6 (better is 14...Qa5!? 15.Bd7 Nd7+=) 15.Nc3+= Rc8 16.0-0 (better is 16.Bc4 Qb4 17.Qb4 Bb4 18.Bb3+=) 16...Rc3–/+ 17.dc3 Qb5 (17...Bb5? 18.c4+-) 18.Rb1 (18.Qb5 Bb5 19.Rb1 Bc4–/+) 18...Qb3–/+ 19.Rb3 b5 (better is 19...Nd5 20.Rb7 Bc6–/+) 20.c4? (better is 20.e4–/+) 20...bc4–+ 21.Rb6 Bc7 22.Rb7 (better is 22.Rb4 Nd5 23.Rc4–+) 22...Bd6?? (better is 22...Nd5 23.e4 Bc8 24.Rb8 Bb8 25.ed5 Bb7–+) 23.e4 (23.Rb6 Nc8 24.Rb7–+) 23...Kf7?? (better is 23...Bg4–/+) 24.Nd2+- Ke8? (better is 24...Bc8 25.Nc4 Bb7 26.Nd6 Kg7 27.Nb7 Nd7+-) 25.Nc4 Bc8 (25...Nc8 26.Nd6 Nd6 27.Rb8 Kf7+-) 26.Nd6 Kf8 (26...Kd8 27.Rb8 Kc7 28.Rc8 Nc8 29.Ne8 Kd8 30.Nf6 h6+-) 27.Nc8 1–0. DEFFM – GuestYBLX, freechess.org, 2016.

6.Qd1 Be6 7.Nf3 Ne7 8.d3 Nd7 9.Nbd2 0-0 10.c4 c6 11.a4 Qc7 12.Be2 Rae8 (12...dc4 13.dc4 Nc5 14.0-0=+) 13.h3 c5 (13...dc4 14.dc4 Rd8 15.0-0=) 14.cd5 Nd5 15.Nc4 Be7 16.0-0 b6 (16...N7b6 17.a5 Nc4 18.dc4=) 17.Qb3 Nb4 18.Rfd1 Kg7 19.Nfd2 Rd8 20.Bc3 Rfe8 21.Rac1 (21.Rdc1 Nd5+=) 21...h5 (21...Nd5 22.Bf3=) 22.Ne4 (22.Nf3 Nd5+=) 22...Qb8 (22...Nd5 23.Bb2+=) 23.Qb2 Kh7 24.g4 (24.Bb4 cb4 25.d4 f5+=) 24...hg4= 25.hg4 (worse 25.Bg4 Bc4 26.Bd7 Nd3 (26...Rd7?! 27.dc4 Nd3 28.Qc2-/+) 27.Rd3 Bd3 28.Be8 Be4-+) 25...Nd5 26.g5 (26.Bf3!?=) 26...Nc3-/+ 27.Qc3 f5 (worse 27...fg5 28.Kf1=) 28.Nf6 (28.Ned2 Bg5 29.Kf1 Bf6-/+) 28...Nf6 29.gf6 Bf6 30.Kg2 Kg7 31.Rh1 (31.Qc2 Bd5 32.e4 Ba8-/+) 31...Bd5 Black prepares the advance e4 32.e4 (32.f3 e4 33.Qc2 ef3 34.Bf3 Bc4 35.Qc4 Bb2-/+ (35...Re3?? 36.Rh7 Kh7 37.Qf7 Kh6 38.Qf6 Qh2 39.Kh2 Rf3 40.Qd8+-)) 32...fe4 33.de4 Be4 34.f3 Bf5 35.Rcd1 (35.Qe3 e4 36.Qh6 Kf7-+) 35...e4 36.Qc1 Rd1 (36...Rh8 37.Rd8 Qd8 38.Rh8 Qh8 39.Qf4 Qh3 40.Kf2 Bh4 41.Ke3-+) 37.Bd1 (37.Qh6 Kf7 38.Rd1 Rh8 39.Nd6 Ke7-+) 37...Kf7 (37...Rh8 38.Rh8 Qh8 39.Qf4 Qh3 40.Kg1 Bd4 41.Ne3 ef3 42.Bf3-+) 38.Rh7 Bg7 (38...Kg8 39.Qh6 Re6 40.Ne3-/+) 39.Qh6 Rg8 40.Bb3 ef3 41.Kh1? (better 41.Kf3 Kf6 42.Qe3-/+) 41...Be6 (41...Qg3 42.Rg7 Rg7 43.Ne3 Be6 44.Be6 Ke6 45.Qg7 Qe1 46.Kh2 Qe3 47.Qg6 Kd5 48.Qf7 Ke4 49.Qg6 Kd4 50.Qg4 Kc3 51.a5-+) 42.Qe3 Qg3 (42...Rh8 43.Qf3 Ke7 44.Rh8 Qh8 45.Kg2-+) 43.Ne5 Kf8 (43...Qe5 44.Qe5 Bb3 45.Qf4 Ke7 46.Qe4 Kf8 47.Qf3 Bf7 48.Qa8 Ke7 49.Qa7 Ke8 50.Qb8 Ke7 51.Qb6 Bd5 52.Kg1+-) 44.Nf3 Bb3 45.Qb3 Rh8 (45...Rh8 46.Rh8 Bh8-+) 0-1. bjoernsen (2265) - GoKnight123 (2365), Rated Blitz game, lichess.org, 2016.

6.Qf3 c6 7.c4 Be6 8.bc6 bc6 9.cd5 cd5 10.Bb5 Nd7=+ 11.Bc6 Rb8 12.Ba3 Qc7?? 13.Bd5= Bd5 14.Qd5 Rb1 15.Rb1+= Ba3 16.Qa8 Ke7 17.Ne2 Nb6 18.Qf3 Nh6 19.0-0 Nf5?? 20.e4+- Nd6 21.Qa3 Rd8 22.d4 Kf7 23.Rfc1 Qd7 24.de5 Ne4 25.Qb3 Kg7 26.ef6 Nf6 27.Rd1 Qe7 28.Rd8 Qd8 29.Rd1 Qe7 30.Nf4 h5 31.Ne6 Kh7 32.Re1 Qd6 33.Ng5 Kg7 34.Qf7 Kh6 35.Ne6 (35.Ne6 Qe6 36.Re6+-) 1–0. pumpkin (2320) – pispindroi, net–chess.com, 2008.

6.Qf3 Be6 7.Nc3 e4 8.Ne4 de4 9.Qe4 =+.

6.Qh4 a6 7.Nf3 Qe7 8.Be2 Nd7 9.0-0 Nc5 10.c4 ab5 11.cd5 Na4 12.Bb5 Bd7 13.Ba4 Ra4 14.d4 ed4 15.Nd4 c5 16.dc6! bc6 17.Nc3 Rb4 18.Ba3 Rd4 19.ed4 Ba3 20.Rfe1 Be6 21.d5 cd5 22.Nd5 Qd6?? 23.Qa4 Kf7+= 24.Qa7 Ne7 25.Ne7 Qe7 26.Qe7 Be7 27.Rab1? Rd8 28.h3 f5 29.Rb7 g5 30.a4–/+ h5 31.a5 g4 32.hg4 hg4 33.a6 Bd5?? 34.Ree7+- Kf8 35.Rf7 Bf7=+ 36.a7 Bd5 37.Rb8? Ke8 38.Kh2 f4 39.g3? f3–+ 40.Kg1 Bc6 41.Rd8? Kd8 42.Kf1 Ba8 43.Ke1 Kc7 44.Kd2 Kb6 45.Ke3 Ka7 46.Kf4 Bb7 47.Kg4 Kb6 48.Kf4 Kc5 49.g4 Kd6 50.g5 Ke7 51.Kg3 Kf8 52.Kg4 Kg7 53.Kf4 Kg6 54.Kg4 Bc6 55.Kf4 Bd5 56.Ke3?? Be6 57.Kd4?? Kg5–+ 58.Ke5 (58.Ke5 Kh4 59.Kf4–+) 0–1. elsh1403 – suxfyjh, internet, 2011.

6.Qh4 c6 7.a4 Qe7 8.Nf3 Be6 9.Be2 Nd7 10.bc6 bc6 11.a5 Qg7 12.0-0 Ne7 13.d3 Nf5 14.Qa4 Rc8 15.Nbd2 0-0 16.c4 e4 17.cd5?? Nc5 18.Qd1 cd5 19.de4= de4 20.Nd4 Bf7 21.Nc4 Bc7 22.Ba3 Qh6 23.g3 Ne6? 24.Nf5 gf5 25.Bf8 Rf8 26.Rc1 Ng5 27.h4 Nh3 28.Kh2 Nf4?? 29.Nd2 Bb8?? 30.Bc4 Kh8?? 31.Bf7 Nd3 32.Qb3 Ne5 33.Be6 Ng4 34.Kg2 Bg3 35.fg3 Ne3 36.Kg1 Nf1 37.Rf1 Qd2 38.Bf5 Qd3? 39.Qd3 ed3 40.Bd3 Rd8 41.Rd1 Kg7 42.Be2 Rd1 43.Bd1 Kf7 44.Kf2 Ke7 45.Ke3 Kd6 46.Kf4 Ke7 47.Kf5 h6 48.g4 a6 49.g5 Kd7 50.gf6 Kc6 (50...Kc6 51.f7 Kd6 52.f8Q Kd5 53.Qb4 Kc6 54.Qb6 Kd7 55.Ba4 Kc8 56.Ke6 h5 57.Bd7) 1–0. elsh1403 – wadud (1675), 5807607 internet, 2011.

6.Qh4 Qe7 7.Nf3 Be6 8.Be2 Nd7 9.0-0 0-0-0 10.Qa4 Kb8 11.d4 e4 12.Nfd2 f5 13.c4 dc4 14.Nc4 Nb6?? 15.Nb6+- cb6 16.Nc3 Bc7? 17.d5!+- Bd7 18.Rfd1 Bd6? 19.Qd4?? Nf6+= 20.a4 Be5 21.Qd2 Rc8 22.a5 ba5 23.Ra5 b6 24.Ra6 Qd6 25.Rda1 Rc7 26.Na4 Bc8–+ 27.Be5 Qe5 28.Nb2 Ba6 29.Ra6 Qd6 30.Nc4 Qd5 31.Qd5? Nd5 32.Ne5 Kb7 33.Nc6 Ka8 34.Bc4 Ne7 35.Be6 Nc6 36.Bd5 Kb8 37.bc6 Rd8 (37...Rd8 38.Bb3 Rc6–+) 0–1. elsh1403 – fandasa54, internet, 2011.

6.Qh4 Be7 7.Nf3 f5 8.Qa4 Bf6 9.Be5 Be5 10.Ne5 Qd6 11.d4 Bd7 12.c4 a6 13.Nc3 Nf6 14.cd5 Nd5 15.Nd5 Qd5 16.Nd7 Nd7 17.Bc4?? Qg2= 18.b6?? Qh1–+ 19.Ke2 Qa1 20.Be6 Qb2 21.Kf3 c6 22.d5 Nb6 23.Qf4 Nd5 24.Qd6 Qf6 25.Qd7 Kf8 26.Qd6 Ne7 0–1. elsh1403 – 08ani, internet, 2011.

6.Qh4 Ne7 7.Qf6+= Rf8 8.Qh4 Bf5 9.d3 a6 10.g4 Be6 11.Nh3 ab5 12.Ng5 Qd7?? 13.Nh7+- Rf7 14.Nf6 Rf6 15.Qf6 Nbc6 16.h4 0-0-0 17.g5 Rf8?? 18.Qf8 Nd8 19.Qf6 c6 20.Be5 Be5 21.Qe5 Bg4 22.Nd2 Bh5 23.Bh3 Nf5 24.e4 de4 25.de4 Nf7 26.Qf4 Qe7 27.0-0 Kd8 28.ef5 gf5 1–0. elsh1403 – antoniusz555, internet, 2011.

6.Qh4 Ne7 7.Qf6+= Rf8 8.Qh4 Nf5 9.Qd8 Kd8 10.Nf3 Be6? 11.Ne5 Be5 12.Be5 c6 13.a4 cb5 14.ab5 b6 15.Be2 Nd7 16.Bg3 Ng3 17.hg3 Nc5 18.d3 h5 19.Nd2 Kd7 20.c4 dc4 21.dc4 Nb3?? 22.Nb3 Rf6 23.Rd1 Kc7 24.Rh4 Raf8 25.Bf3 Bc4 26.Rc1 g5 27.Rhc4 Kb8 28.Rc7 g4 29.Rb7 Ka8 30.Rf7 gf3 31.Rf8 Rf8 32.gf3 Rf3 33.Nd4 Rf8 34.Rc7 Kb8 35.Rh7 Rc8 36.Nc6 Ka8 37.Ra7 1–0. elsh1403 – asso79, internet, 2011.

6.Qh4 f5 7.Qd8+= Kd8 8.f4! Nd7 9.Nf3 Ne7?? 10.fe5+- Bb4 11.e6 Re8 12.ed7 Bd7 13.Be2 1–0. elsh1403 – divad (1725), internet, 2011.

6.Qh4 f5 7.Qd8+/– Kd8 8.f4! Nd7 9.Nf3 Ne7?? 10.fe5+- Bc5 11.e6 Nf8 12.Bh8 Be6 13.Bf6 Kd7 14.Be7 Be7 15.Be2 a6 16.0-0 ab5 17.Bb5 c6 18.Be2 Kd6 19.d3 Nd7 20.Rd1 Bf6 21.d4 Nb6 22.Nbd2 Nc8 23.c4 Ne7 24.cd5 Nd5 25.Nc4 Kc7 26.Nce5 Nc3 27.Rd2 Ra3 28.Bc4 Ne4 29.Rc2 Bd7 30.Re1 g5 31.Nd7 Kd7 32.Ne5 Kc7 33.Bd3 Be5 34.Be4 fe4 35.de5 Ra5 36.Rf1 Re5 37.Rf7 Kd6 38.Rh7 b5 39.Rh6 Kd5 40.Rhc6 Re8 41.R6c5 Kd6 42.Rb5 Ra8 43.Rg5 Ra3 44.Kf2 Rd3 45.h4 Ke6 46.h5 Kf6 47.Rg8 Kf7 48.Rg3 Rd5 49.h6 Rh5 50.Rg7 Kf8 51.Rc8 1–0. elsh1403 – mariok2 (1850), internet, 2011.

6.Qh4 f5 7.Qd8+/– Kd8 8.f4! Nd7 9.Nf3 Ngf6?? 10.fe5+- Ne5 11.Ne5 Re8 12.Nf7 Ke7 13.Nd6 cd6 14.Be2 Ne4 15.0-0 Bd7 16.d3 Ng5 17.a4 Rac8 18.Na3 Kf7 19.h4 Ne6 20.Bf3 Nc7 21.Rac1 Re3 22.Rfe1 Rce8 23.Kf2 f4 24.Bd4 Re1 25.Re1 Re1 26.Ke1 b6 27.Bc3 Be6 28.Bd2 d4 29.Bf4 Ke7 30.Nc4 Ne8 31.Ke2 d5 32.Ne5 Bg8 33.Nc6 Ke6 34.Nd4 Kd7 35.Bg4 Kd8 36.Nc6 1–0. elsh1403 – jajele (1760), internet, 2011.

6.Qh4 Bf5 7.c4 Bb1 8.Rb1 c6 9.cd5 cd5 10.Nf3 Nd7 11.Be2 Ne7 12.0-0 Nf5 13.Qa4 Nc5 14.Qc2 Rc8 15.Qd1 Ne4 16.Rc1 0-0 17.Qb3 Rc1?? 18.Qd5+- Kg7 19.Rc1 Ng5 20.Qb7 Rf7 21.Qd5 Nf3 22.Bf3 Ne7 23.Qb3 Bb8 24.d4 ed4 25.Bd4 Nf5 26.Bb2 Rd7 27.Qe6 Rd6 28.Qb3 Rd2?? 29.g4 Nh4 30.Bc6 Qd6 31.f4?? g5?? 32.Be8?? Qd5?? 33.Qc3?? Qg2 0–1. elsh1403 – papa222 (1750), internet, 2011.

6.Qh4 Bf5 7.Nf3 Bc2 8.Nc3 Be4 9.Be2 c6 10.Ne4+= de4 11.Qe4 Ne7 12.0-0 0-0 13.Bc4 Kg7 14.Qc2 Nd7 15.d4 cb5 16.de5 Be5 17.Ne5 Ne5 18.Bb5 Rc8 19.Qb3 Qd5 20.Qa4 a6= 21.Be2 Qd2 22.Be5 fe5 23.Bf3 Rfd8? 24.Rad1 Qb2 25.Rb1 Qc3? 26.Rb7+- Rc4 27.Re7?? Kf8+= 28.Qa6 Ke7 29.Qb7 Rd7 30.Qb5 e4 31.Bg4 Rd6 32.Qb7 Kf6 33.Qe4?? Re4–+ 34.f3 Qe3 35.Kh1 Rg4! 36.fg4 Kg5 37.h3 Kh4 38.Rf3 Rd1 39.Kh2 Qg1 0–1. elsh1403 – botvinnikk, internet, 2011.

6.Qd1 Ne7

7.c4 c6 8.a4 (8.d4 0-0=) 8...0-0 9.Nf3 a6 (9...e4 10.Ng1–/+) 10.Be2 (10.d4 e4 11.Nfd2 ab5=) 10...ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Be6 14.cd5 Nd5 15.0-0 Bb4 16.Bc4 Bf7 17.Ne4 Kg7 18.Ne5 (better is 18.Qb3!?=) 18...fe5+= 19.Be5 Kg8 20.Bd5 Bd5 (20...cd5?? 21.Nf6 Kg7 22.Ng4 Kg8 23.Nh6) 21.Nf6 Kf7 (21...Rf6 22.Bf6 Qb5 23.Qg4=) 22.Nh7 (22.Qg4 h5 23.Qf4 Ke6+/–) 22...Re8+= 23.Ng5 Kg8 (23...Ke7 24.bc6 Nc6 25.d4+=) 24.d4 (24.Qc2 Bf7 25.Nf7 Kf7 26.Qc4 Ke7 27.Qh4 Ke6 28.Qf6 Kd7+-) 24...Qb5 (24...Nd7 25.Qd3 Ne5 26.de5 Kg7+= (26...Re5?? 27.Qg6 Kf8 28.Nh7 Ke7 29.Qf6 Ke8 30.Qe5 Be7 31.bc6 bc6 32.e4+-; 26...Qb5?? 27.Qg6 Kf8 28.e6 Be6 29.Qh6 Kg8 30.Ne6 Re6 31.Qe6 Kf8 32.Rd1+-)) 25.Qg4+/– Be7 (better is 25...Bc3+/–) 26.Ne6 Qd3 27.Nc7 Rf8 28.Nd5 cd5 29.Qe6 Rf7 30.Bb8 Qf5 31.Qf5 gf5 32.Be5 b5 33.Rb1 b4 34.Rc1 Bf8 35.Rc8 Ra7 36.g3 Kf7 37.Rb8 Ra1 38.Kg2 Rb1 (38...Be7 39.Rb7 Ke6 40.h4+-) 39.h4 (better is 39.Rd8!? b3 40.Rd5 Bb4+-) 39...b3 40.h5 b2 41.Rb7 Kg8 42.Bf4 Ba3 43.h6 Rc1 (43...Be7 44.Re7 Rg1 45.Kg1 b1Q 46.Kg2 Qe4 47.Re4 fe4+-) 44.h7 1–0. GuestPBBY – GuestXYMG, freechess.org, 2017.

7.Nf3 0-0

8.d3 c5 9.c4 d4 10.ed4 cd4 11.Be2 Nd7 12.0-0 Nc5 13.Nbd2 Qc7 14.Re1 Be6 15.g3 Rae8 16.Bf1 f5 (16...a6 17.a4=+) 17.Ng5 (17.Nb3!? f4 18.Nc5 Bc5 19.Ne5 fg3 20.hg3=) 17...Bc8 18.Bg2? (better 18.Ba3=) 18...h6-+ 19.Ngf3 Kh7?? (better 19...Nd3 20.Re2 Bd7-+) 20.Qc2= Ng8 21.Re2 (21.Nb3 Nf6 22.Nc5 Bc5=) 21...Nf6 (21...e4 22.de4 d3-+) 22.Rae1? (22.Nb3 Bd7=) 22...Bd7?? (better 22...e4 23.Qb1 Nd3 24.Nd4 Ne1 25.Qe1 b6-+) 23.Qb1 b6 24.Nb3 Bc8 25.Nc5 Qc5 26.Qa1 Re7? (26...Qc7 27.Qd1=) 27.Bc1?? (27.Nd4 ed4 28.Bd4 Re2 29.Re2+- (29.Bc5?! Re1 30.Qe1 Bc5=)) 27...Rfe8 28.Bd2 Qc7 29.Qc1 Bc5 (better 29...g5=+) 30.Bh6+/- e4 31.Ng5 Kg8 32.h4 (32.Nh3!? ed3 33.Re7 Re7 34.Re7 Qe7 35.Nf4+=) 32...ed3 (better 32...e3!? 33.Bd5 Nd5 34.cd5 ef2 35.Kf2 Re2 36.Re2 Re2 37.Ke2 Qg3-+) 33.Re7= Re7 (33...Be7? 34.Bc6 Bd7 35.Ne6 Be6 36.Be8+-) 34.Nf3 Re2 35.Bf4 Qe7 36.Ne5?? (better 36.Qb1 Bb7 37.Rf1-+) 36...Ne4 (better 36...d2 37.Bd2 Qe5 38.Re2 Qe2-+) 37.Nd3+= Nc3 (37...Ra2? 38.Qb1 Ra3 39.Nc5 bc5 40.f3+- (40.Be4?! fe4 41.Re4 Bf5 42.Re7 Bb1+=)) 38.Kh2 Re1 39.Qe1 (worse 39.Ne1 Ne2 40.Qd1 Nf4 41.gf4 Qh4 42.Kg1 Qf4-/+) 39...Qe1 40.Ne1 Na2 41.Nd3 Nc3 42.Be5 Ne2 (better 42...Kf7!?=) 43.Bd5 Kf8 (better 43...Kh7!?+/-) 44.Nc5+- bc5 45.Bd6 Kg7 46.Bc5 d3 47.Bf3 (better 47.Be3 Kf6 48.Bc6+- (48.Ba7?? d2-+)) 47...Nc1?? (better 47...Bb7! 48.Be2 de2=) 48.Bd4 (48.Ba7 Kf6 49.Be3 Ne2+-) 48...Kh7 (48...Kf7 49.Ba7 Ne2 50.Kg2+-) 49.Be3 (better 49.Ba7!? Ne2 50.Be3 Nc3+-) 49...Nb3 (49...Ne2+-) 50.Bd5 (better 50.c5 Nc5 51.Bc5+-) 50...d2+/- 51.Bd2 (better 51.Bf3 Be6 52.c5 Nc5 53.Bd2+/-) 51...Nd2= 52.c5 Ne4 53.b6 ab6 54.cb6 Nd6 55.f4 Bb7 56.Be6? (better 56.Bb7 Nb7 57.g4=) 56...Kg7-+ 57.h5 Kf6 58.Bd7 (58.Bb3!? gh5 59.Bd1-+) 58...gh5 59.Kh3 Ke7 60.Ba4 Nc4 61.Bb3 Nb6 62.Kh4 (62.Bd1 Nd5 63.Bh5 Nf6-+) 62...Bd5 (62...Bf3 63.Kg5 Bg4 64.Bc2-+) 63.Bc2? (better 63.Bd1 Bf7 64.Kg5-+) 63...Kf6 64.Kh5 (64.Bd1 Bf7-+) 64...Be4 (64...Bf3!? 65.Kh4 Bg4 66.Bd3-+) 65.Bb3? (65.Bd1 Nd5 66.Kh4 Ne3-+) 65...Nd5 (better 65...Bf3 66.Kh4 Bg4-+) 66.g4?? (66.Kh4 Ne3 67.Ba4-+) 66...Ne3 (better 66...Nf4 67.Kh4 Ng6 68.Kh3 f4-+) 67.gf5 (67.gf5 Kf5 68.Kh6-+). bjoernsen (2120) - RaySalo (2145), Rated Bullet game, lichess.org, 2015.

8.d3 c6 9.a4 a6 10.c4 ab5 11.ab5 Ra1 12.Ba1 Bg4 13.bc6 e4 (better 13...Nbc6!? 14.Qb3 Bf3 15.gf3 Bb4 16.Bc3 Qa5=+) 14.de4+= de4 15.h3 Bh5 (15...Bb4 16.Bc3 Bc3 17.Nc3+=) 16.g4 ef3 17.gh5 (better 17.cb7!? Bb4 18.Bc3 Bc3 19.Nc3+/-) 17...Nbc6 18.hg6 hg6 (18...Bb4 19.Bc3 Bc3 20.Nc3 Qd1 21.Kd1 hg6 22.h4=) 19.Qc2 (19.Qf3 Bb4 20.Bc3 Bc3 21.Nc3 Qa5=+) 19...Nb4 (19...Be5!? 20.Bc3 Qb6=) 20.Qb3+= Bc5 (20...Bc7 21.Nd2 (21.Qb4? Ba5 22.Qc3 Bc3 23.Bc3 Qd7-+) 21...Ba5 22.c5 (22.Nf3?? Na2 23.Bc3 Bc3 24.Qc3 Nc3-+) 22...Kh7 23.Qc4=) 21.Nd2+/- Qa5 22.Bc3 Rd8 23.Nf3 (worse 23.Bf6 Rd2 24.Kd2 Nbd5 25.Kd1 Nf6-/+) 23...Nf5 (23...Nd3 24.Bd3 Rd3 25.Ba5 Rb3 26.Ke2+/-) 24.Be2 (better 24.Bg2 Rd3 25.Ke2 Ne3 26.fe3 Re3 27.Kd1 Qd8 28.Nd2+/-) 24...Ne3?? (better 24...Kf7+/-) 25.fe3+- Qc7 (25...Kg7 26.Rf1 Rd6 27.Rg1+-) 26.Kf2 (26.Kf2 Nd3 27.Kf1+-) 1-0. bjoernsen (2415) - mxmlxv (2365), Rated Blitz game, lichess.org, 2016.

8.Be2 c5 9.0-0 Qc7 10.h3 b6 11.d3 Nd7 12.Nbd2 Nf5 13.e4 de4 (13...Nd4 14.Nd4 cd4 15.ed5=) 14.de4+= Nd4 15.Nc4 Bb7 16.Nfd2 (16.Nd6 Qd6 17.Bc4 Kg7+=) 16...Rad8 (16...Nb5 17.Na5 ba5 18.Bb5=) 17.Bg4 (better 17.Nd6 Ne2 18.Qe2 Qd6 19.Rfd1+=) 17...Nb8?? (17...Nb5 18.c3 a6 19.a4=+) 18.a4?? (18.c3 h5 19.cd4 hg4 20.de5 Be5 21.Be5 fe5 22.Qg4 Kg7+-) 18...Be7 (18...f5 19.ef5 gf5= (worse 19...Nf5 20.Re1+=)) 19.c3+/- f5 20.cd4 fg4 21.d5 (21.dc5 gh3 22.Qb3 A) 22...Bc5? 23.Ne5 Rf7 24.Rad1+- (24.Qf7?! Qf7 25.Nf7 Rd2 26.Nh6 Kf8+=); B) 22...hg2 23.Kg2 Bf6+/-) 21...gh3+= 22.Be5 Qd7 23.Ra3 hg2 24.Kg2 Bf6 25.Qa1 (25.Rd3 Be5 26.Ne5 Qe8+=) 25...Be5 (25...Bd5!? 26.ed5 Qd5 27.Nf3 Qc4 28.Bf6 Qg4 29.Kh1 Rd5+/-) 26.Qe5 Rde8 27.Qg5 Qg7 28.Nd6 Re5 29.Qg3 (29.Qh4 Qc7 30.N2c4 Rh5+/-) 29...Bc8 (better 29...Qe7!? 30.Nf5 Rff5 31.ef5 Rd5=) 30.f4 Re7 (30...Rh5 31.Nc8 Rc8 32.Qg4+/-) 31.e5+- Nd7 (31...Bf5 32.N2c4+-) 32.Nf3 (32.N2c4 Nb8+-) 32...Qh6 (better 32...Rd8+-) 33.Ng5 Ne5 (33...Nf6 34.Nc8 (worse 34.ef6 Re2 35.Kg1 Bd7 36.f7 Kh8+-) 34...Rc8 35.ef6 Re2 36.Kg1+-) 34.Rh1 (34.Rh1 Nf7 35.Rh6 (35.Ndf7?! Re2 36.Kg1 Qg7 37.Nh6 Kh8+-; 35.Ngf7?! Re2 36.Kg1 Qg7+-) 35...Nh6 36.Re3+-) 1-0. bjoernsen (2310) - mxmlxv (2310), Rated Blitz game, lichess.org, 2016.

8.Be2 c5 9.0-0 e4 10.Ne1 Be6 11.f4 Nd7 12.d3 f5 13.Nd2 Qc7 14.c4 ed3 15.Bd3 Rad8 16.Qc2 Nb6 (16...g5 17.Nef3 (worse 17.fg5 Bh2 18.Kh1 Ne5=+) 17...h6 18.fg5+-) 17.Nef3 dc4 18.Nc4 Ned5 19.a3 Be7 20.Rfe1 Bf6 21.Nce5 (21.Bf6 Nf6 22.Nce5 Rc8+=) 21...Rfe8 (21...Rc8 22.Rac1=) 22.Rac1 Rc8 23.Ng5 Bg5 24.fg5 Qe7 25.h4 c4 (25...Qd6 26.Rcd1=) 26.Nc4+= Nc4 27.Bc4 Nb6 28.Be6 (28.Qc3!? Bc4 29.Qh8 Kf7 30.Qh7 Kf8 31.Qh6 Kf7 32.Qg7 Ke6 33.Qg6 Kd7 34.Qf5 Qe6 35.Red1 Nd5 36.e4 Qf5 37.ef5+-) 28...Qe6+= 29.Qd3 Qe4 (29...Rc4+=) 30.Qd6 (better 30.Qd4!? Qd4 31.Bd4+/-) 30...Rc1= 31.Bc1 (31.Rc1 Qe3 32.Kh2=) 31...Qe6 (better 31...Qh4 32.Rf1 Qe4=+) 32.Qd4+= Qe5 (32...Qe4 33.Bb2 Qd4 34.Bd4+/-) 33.Qb4 (33.Kf2!?+/-) 33...Qe4 34.Qb3 Qc4 35.Qb2 (better 35.Qc4!? Nc4 36.Rd1+=) 35...Qh4=+ 36.Rd1 Qg5 The isolani on e3 becomes a target (36...Qc4 37.Qd4=+) 37.e4 (37.Qb3 Kf8=+) 37...f4 (37...Qe7!? 38.ef5 Qc5 39.Qf2 Qf5 40.Qf5 gf5=+) 38.Qb3= Kg7 39.Bb2 Kh6 40.Qh3 (40.Qf7 Re7 41.Qf8 Kh5 42.Bf6+-) 40...Qh5-/+ 41.Qd3 Nc4 42.Bf6 (42.Qc4 Qd1 Deflection) 42...Ne5 (42...Ne3!? 43.Rd2 Ng4-/+) 43.Qd6 Re6?? (better 43...Qe2 44.Be5 Re5 45.Qf8 Kg5 46.Qd8 Kg4 47.Qd7 Kh4=+) 44.Qf8 (44.Qe6?? Qd1 45.Kh2 Ng4 46.Qg4 Qg4-+) 1-0. bjoernsen (2345) - AntoineBriet (2490), Rated Blitz game, lichess.org, 2016.

8.Be2 c6 9.a4 Be6 10.0-0 Nd7 11.d3 Qe8 (11...a6 12.Ba3 c5 13.c4=) 12.Nbd2 Rc8 13.c4 g5 14.Rc1 Qg6 15.a5 h6 16.a6 b6 (16...ba6 17.ba6 g4 18.Ne1=) 17.bc6 Rc6 18.cd5 Rc1 19.Qc1 Bd5 (19...Nd5?? 20.Qc6+-) 20.e4 Ba8 (20...Bf7 21.Qd1=) 21.Nc4 (21.Qc4 Qf7 22.d4 Qc4 23.Bc4 Kh7+=) 21...Bb8 (21...Bc5 22.Nfd2+=) 22.Ne3 (22.Ba3 Re8+/-) 22...Nc5 (22...Rc8 23.Qb1+=) 23.Qc4 (23.Ba3 Rc8 24.Qb2 Kg7+=) 23...Kh8 (23...Qf7 24.d4 ed4 25.Qd4+=) 24.Ba3 (24.Rc1 Qf7+=) 24...Rc8 (24...Bd6 25.Qc3+=) 25.Qb5 Bc6 26.Qb1 Ba8 (26...Bd7 27.Rc1+=) 27.Rc1+/- f5 (27...Qe8 28.Bc5 Rc5 29.Rc5 bc5 30.Qb3+=) 28.Bc5 (28.ef5!? Qg7+-) 28...bc5+/- 29.Ne5?? (better 29.Rc5! Rc5 30.Qb8 Qg8 31.Qa7 Rc1 32.Bf1+/-) 29...Be5-+ 30.ef5 Nf5 (better 30...Qa6 31.d4 Bh2 32.Kh2 Qe2 33.Rc5 Qf2 34.Rc8 Nc8 35.Qb3 Qh4 36.Kg1-+) 31.Nc4?? (better 31.d4 Bh2! 32.Kh2 Qd6 33.Kh1 Nd4 34.Qb2-/+) 31...Bd4-+ 32.Bg4 Rf8 33.Re1 (33.Qc2-+) 33...Nh4 (33...Qa6?! 34.Bf5 Qc6 35.Be4 Bf2 36.Kh1 Be1 37.Qe1-+) 34.Re2 Qc6 35.Re4 (35.Qf1 Ng2 36.Re6-+) 35...Rf2 36.Kh1 Rg2 (better 36...Qb5! 37.Qc1 Rg2-+) 37.Qb8 Kh7 38.Re7?? (38.Bf5 Nf5 39.Kg2 Nh4 40.Kf1 Qf6 41.Ke2 Be4 42.Qa7 Kg6 43.Qb6-+) 38...Bg7 39.Rg7 Kg7 40.Qa7 Kg6 (40...Kf6 41.Qg7 Kg7 42.Bf3 Qf3 43.Ne3 Re2 44.Kg1 Qf2) 41.Ne5+- Kf6 42.Nc6 Bc6 43.Qb6 Rg4 (43...Rf2 44.Qc6 Kg7 45.Qb7 Kg6 46.Qe4 Kg7+-) 44.Qc6 Kf5 45.Qc5 Kg6 46.Qc6 Kh5 47.a7 Ra4 48.Qe8 Ng6 49.Qa4 Nf4 (49...Ne5 50.a8Q Kg6 51.Q4e4 Kg7 52.Qe5 Kg6 53.Qae8 Kh7 54.Qf7) 50.a8Q Kh4 (50...Kg4 51.Qg2 Kf5 52.Qge4 Kg4 53.Qd1 Kh4 54.Qee1 Kh3 55.Qf3) 51.Qf3 h5 (51...g4 52.Qaf4 h5 53.Qf6) 52.Qaf4! g4 (52...gf4 53.Qf4 Mate attack) 53.h3 (53.Qf6) ½-½. bjoernsen (2390) - Partisiano (2225), Rated Blitz game, lichess.org, 2016.

8.Be2 Be6 9.d3 a6 10.a4 Nd7 11.Nbd2 c5 (11...b6 12.0-0=) 12.c4 d4 (12...Qc7 13.0-0=) 13.ed4 (13.Ne4 Bc7=) 13...cd4=+ 14.0-0 a5 (14...Nc5 15.Re1=+) 15.Nb3 b6 16.Nfd2 Nc5 17.Bf3 (17.Nc5 Bc5 18.Bg4 Nf5=) 17...Rc8 (17...Nd3 18.Ba8 Qa8 19.Ba3-/+) 18.Nc5 Bc5 19.Ba3 f5 (19...Ba3 20.Ra3 Nf5 21.Re1=) 20.Re1 (20.Bc5 Rc5 21.Re1 e4+/-) 20...Qd6 (20...Ba3!? 21.Ra3 Qd6+=) 21.Bc5+/- Rc5 (21...Qc5 22.Qe2 e4 23.Rac1+/-) 22.Qe2 g5 (22...e4 23.Be4! Rf6 24.Bf3+-) 23.Nb3+- g4? (better 23...Rfc8+-) 24.Bc6?? (better 24.Nc5 Ng6 25.Ne6 gf3 26.Qf3 Qe6 27.Rac1+-) 24...Rc6+/- 25.bc6 Nc6 26.Rec1 (26.Nd2 Bd7+=) 26...e4 (26...f4!? 27.f3 gf3 28.Qf3 Nb4=) 27.c5+/- Qe5 (better 27...bc5!? 28.Nc5 Bd5+/-) 28.cb6+- Nb4 29.Rc5 (better 29.Nc5!?+-) 29...Qd6+/- 30.Ra5 (30.de4 Bb3 31.Ra5 d3+-) 30...Bb3 (30...Nd3!? 31.Nc1 Qb6+/-) 31.de4+/- d3 32.Qb2 Bc2? (better 32...Bc4 33.Rf5 Rf5 34.ef5 Nc2+- (34...Qb6?? 35.Rb1+-)) 33.b7 (better 33.e5 Qb6 34.Rb5+-) 33...d2=+ (33...fe4 34.Rg5 Kf7 35.Qg7 Ke6 36.Qh6 Rf6 37.Qh5+-) 34.Rd5 Nd5 35.Qc2 Nc3?? (35...Qe5 36.Rd1 Nc3 37.Rd2 fe4 38.Qb3 Kg7+=) 36.Qb3+- Kg7 37.Qc3 Kh6 (37...Kg6 38.Rd1 Qb6 39.Qd2 Qb7+-) 38.Rd1 Rd8 (38...Qd7 39.Qd2 Qd2 40.Rd2+-) 39.ef5 Qe7 (39...Rb8 40.Rd2 Qe7 41.h3 Rb7 42.hg4+-) 40.Kf1 (better 40.h3 Kg5 41.Rd2+-) 40...Qb7 (40...Rb8+-) 41.Qf6 Kh5 42.Qd8 Qa6 43.Kg1 Qe2 (43...Qa4 44.Rd2 Qe4 45.Rd1+-) 44.Qd2 Qe5 (44...Qd2 45.Rd2 Kg5 46.a5+-) 45.Qd3 (45.Qd7!? Kg5 46.Qd8 Kf5+-) 45...g3 (45...Qf6 46.f3 Qb6 47.Kh1 Kg5 48.Qd2 Kf5 49.fg4 Kg6 50.Qc2 Kh6 51.Rd7 Qe6 52.Rh7 Kg5 53.Rh5 Kf4 54.Qf2 Ke4 55.Qe2 Kd4 56.Qe6 Kc3 57.Qc6 Kd4 58.Rd5 Ke3 59.Qc3 Ke2 60.Rd2 Kf1 61.Qc1) 46.hg3 h6 47.Qf3 (47.Qc4 Qe7 48.Rd6 Qe1 49.Kh2 Qe7 50.g4 Kg5 51.Rg6 Kh4 52.g3) 47...Kg5 48.Rd5 Qa1 49.Kh2 Qa4 (49...Kf6 50.Rd6 Ke7 51.Re6 Kf8 52.Qa8 Kg7 53.Qb7 Kf8 54.Qc8 Kf7 55.Qd7 Kf8 56.Re8) 50.f6 (50.Rd6 Qh4 51.gh4 Kh4 52.Qf4 Kh5 53.Rh6) 50...Kg6 51.Qf5 Kf7 52.Rd7 (52.Qh7 Ke6 53.Qg8 Kf6 54.Qf8 Kg6 55.Rd6 Kg5 56.Qf6 Kg4 57.Qg6) 52...Ke8 53.Qe6 Kf8 54.Qf7 1-0. bjoernsen (2340) - the_phoenix (2360), Rated Blitz game, lichess.org, 2016.

6.Qh4 Be6

7.Nf3 Nd7 8.Be2 Nc5 9.0-0 Qd7 10.d4 ed4 11.ed4 Ne4 12.Nbd2?? g5–+ 13.Qh5 Bf7 14.Qh3 Qh3 15.gh3–/+ 0-0-0 16.Ne4 de4 17.Nd2 f5 18.c4 Bf4 19.Rfd1 e3 20.Nb3 ef2–/+ 21.Kf2 Nf6 22.c5 Rhg8 23.Bf3 Bh2 24.d5 g4?? 25.Bf6= gf3 26.Bd8 Rd8 27.Kf3 Bd5 28.Kf2 f4 29.Nd4 Bg3 30.Kg1 Rg8 31.Kf1 Bc4 32.Ne2?? f3–+ 33.Re1 Be1 34.Ke1 fe2 35.a4 Rg1 (35...Rg1 36.Kd2 Ra1 37.Kc3 e1Q 38.Kc4 Qe4 39.Kc3 Rc1 40.Kb3 Qb1 41.Ka3 Rc3) 0–1. elsh1403 – shmiraka43, internet, 2011.

7.Nf3 Nd7 8.Be2 Ne7 9.0-0 Nf5 10.Qa4 0-0 11.c4 Nb6 12.Qc2 Nc4 13.Bc4 dc4–/+ 14.Nc3 Qe7 15.Ne4 Bd5 16.Nd6 Nd6 17.Nh4 Qf7 18.a4 Rad8 19.Rfe1 Be4 20.Qc3 Bd3 21.Ba3 Rd7 22.f3? Rfd8 23.g4 Ne8 24.Ng2 Ng7 25.Reb1?? Ne6 26.Ne1? e4 27.Nd3 cd3 28.fe4 Ng5 29.Qb4 Qe6 30.e5 Qe5 31.Rf1 Ne4 32.Bb2–/+ Qe6 33.Rf4 Re8 34.Raf1 Rf7 0–1. elsh1403 – horrorvacui (1845), internet, 2011.

7.Nf3 Nd7 8.Be2 Ne7 9.0-0 Nf5 10.Qa4 Nc5 11.Qa5 b6 12.Qc3 Na4 13.Qb3 Nb2 14.Qb2 0-0 15.d3 e4 16.Nd4 Nd4 17.ed4 f5 18.Nd2 Qe7 19.c4 dc4 20.dc4 Ba3 21.Qc3 Bb4 22.Qe3 Rad8 23.Nb3 Qf7 24.Rac1 Rfe8 25.d5 Bc8 26.Nd4 Bc5 27.Rfd1 f4 28.Qc3 f3 29.gf3 Bd4 30.Qd4 ef3 31.Bf3?? Qf3–+ 32.Rd3 Qf7 33.Rf1 Bf5 34.Rf3 Re4 35.Qc3 Rde8 36.Rg3 Rg4 37.Qf3? Rg3 38.fg3 Qg7 39.g4 Qd4 40.Rf2 Bg4 41.Qg3 Re1 42.Kg2 Bf5! 43.Qc7 Be4 44.Kh3–+ Qf2 45.Qd8 Kg7 46.Qe7 Kh6 47.Qh4 (47.Qh4 Qh4 48.Kh4 Rg1 49.d6 g5 50.Kh3 Bf5) 0–1. elsh1403 – lmouse, internet, 2011.

7.Nf3 g5 8.Qa4 c6 9.c4 Ne7 10.Nc3 0-0 11.Be2 Nd7 12.bc6 bc6 13.cd5 cd5 14.0-0 Nb6 15.Qb3 Qd7 16.Bb5 Qc8 17.Rac1 d4 18.Nd5 Bd5 19.Rc8 Bb3 20.Rf8 Rf8 21.ed4?? Ba2 22.de5 Be5 23.Ne5 fe5 24.Be5 Ng6 25.Bc3 Bc4 26.Rb1 Bb5 27.Rb5 Rd8 28.Rg5 Rd5 29.Rg4 Rb5 30.h3 a5 31.Rd4 a4 32.Rd8 Kf7 33.Rd6 a3 34.Kh2 a2 35.Ba1 Rb1 36.Rf6 Ke7 37.Bc3 Nd5 38.Ra6 Nc3 39.dc3 a1Q (39...a1Q 40.Ra1 Ra1–+) 0–1. elsh1403 – velryba (1710), internet, 2011.

7.f4 Qe7 =+.

7.f4 f5 8.Qd8+/– Kd8 9.fe5 Bc5 10.d4 Bb6 11.Nd2 Nd7 12.a4 a6 13.c4 ab5 14.cb5 Ke7 15.Ngf3 h6 16.Bd3 Kf7 17.0-0 Ne7 18.Nb3 c5 19.a5 c4 20.ab6 cd3 21.Nc5 Nb6 22.Nb7 Nc4 23.Bc3 Ne3 24.Rfc1 Rab8 25.Nd6 Kg7 26.Ra7 Kf8 27.Rb7 Rb7 28.Nb7 Rh7 29.Bb4 Ke8 30.Nd6 Kd7 31.b6 Nc6 32.b7 Nc4 33.Bc5 N4a5 34.Rb1 Kc7?? 35.Ne8 Kb8 36.Bd6 Ka7 37.b8Q Nb8 38.Rb8 Nc4 39.Rc8 d2?? 40.Rc4?? d1Q–+ 41.Kf2 Rh8 42.Rc7–/+ Kb6 43.Nf6?? Rc8?? 44.Rc8 Bc8 45.Nd5 Kc6 46.Ne7 Kd7 47.Ng6 Qc2 48.Kg3= f4 49.Kf4?? Qg6–+ 50.Nh4 Qg5 51.Kf3 Qh4 52.g3 Qh5 53.g4 Qh3 54.Kf4 Qh2 55.Kf5 Qf2 (55...Qf2 56.Kg6 Qd4–+) 0–1. elsh1403 – kalmaka, internet, 2011.

4.e3 Bd7

5.a4 Bc5 6.c4 dc4 7.Bc4 Ne7 8.Nf3 c6 (8...a6 9.0-0=) 9.d4+= White gets the initiative 9...Bb4 10.Nbd2 (10.Bc3!? Bc3 11.Nc3+=) 10...cb5 11.ab5 b6?? (better 11...e4 12.Ra4 Ba5=) 12.0-0 (12.de5 Bg4+-) 12...ed4 (12...Bg4 13.de5 Nd7 14.Ne4 fe5 15.Qb3+-) 13.Nd4 Bd2 14.Qd2 Qc7 (14...Qc8 15.Rac1 Qb7 16.Rfd1+-) 15.Rfc1 (15.Qc2!? Qc5+-) 15...Qb7 16.Qb4 Nd5 (16...a5 17.ba6 Na6 18.Ba6 Ra6 19.Nb5+-) 17.Qb3 Ne7 18.Ba3 Qe4 (18...a6 19.Bf7 Kd8 20.Qd3+-) 19.Be7 (better 19.Bf7 Kf8 20.Bd5 Qe5 21.Ba8 f5+-) 19...Qe7 20.Bd5 Be6 (20...a5 21.Ba8 Qd6+-) 21.Ne6 (21.Ne6 Nd7 22.Ba8+-) 1–0. BeepBeepImAJeep (2635) – jonisace321 (1920), lichess.org, 2015.

5.a4 Bc6?? 6.c4 (better 6.bc6 Nc6 7.Nc3+-) 6...Bd7+/- 7.cd5 c6 (7...Bf5 8.Nc3+=) 8.Nf3 (better 8.dc6!? bc6 9.Bc4+/-) 8...cd5= 9.Qb3 Be6 10.Qc2 Bd6 11.Be2 Ne7 12.0-0 a6 13.d4 ab5 (better 13...e4!? 14.Nfd2 ab5 15.Bb5 Nbc6=) 14.de5+/- Be5 (14...fe5 15.Bb5 Nbc6 16.Be5 Be5 17.Ne5+/-) 15.Ne5+- fe5 16.Bb5 Kf8 (16...Nec6!? 17.Be5 0-0+/-) 17.Be5+- 1-0. Jimito100 (2060) - krylt (2025), Rated Bullet game, lichess.org, 2020.

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.cd5 cb5 (9...cd5 10.d4 Bb4 11.Bc3 Bc3 12.Nc3=) 10.Nc3 b4 11.Nb5 (11.Ne4 f5+=) 11...Bb5?? (11...Qa5 12.Be5 fe5 13.Qh5 Kd8 14.Qe5 A) 14...Bb5? 15.Qb8 Ke7 16.d6 Kd7 17.Bb5 Qb5 18.Qc7 (worse is 18.Qf8 Qe5+-) 18...Ke6 19.Qc8 Qd7 20.Qf8+-; B) 14...Na6=) 12.Bb5+/– Nd7 13.Nf3 Qb6 (13...Kf7 14.Bd7 Qd7 15.e4+/–) 14.Qa4 Qc7 15.0-0 Ne7 16.Qa8 (16.e4 Ng6+-) 16...Kf7 17.d4 (better is 17.Qa2 Ke8 18.e4+-) 17...Nd5? (17...e4 18.Qa2 Ke8 19.Nd2+-) 18.Bd7 (better is 18.Qa2 N7b6 19.e4+- (19.de5?! Qc5 20.Bd3 Be7+-)) 18...Qd7+/– 19.de5 f5? (better is 19...Nb6 20.Qa2 Qd5+-) 20.e6! Qe6 (20...Qe6 21.Ng5 Double attack (21.Qb7 Deflection; 21.Ng5 Decoy); 20...Ke6 21.Rd1 Combination) 21.Qb7 (better is 21.Ng5 Ke7 22.Ne6 Ke6 23.Qc8 Kf7 24.Qc4+-) 21...Kg6 22.Ne5 Kh6 (22...Kh5 23.Nf7 f4 24.Nh8 fe3 25.fe3+-) 23.Nf7 Kh5 24.Nh8 Nf6 (24...Qg8+-) 25.Bf6 Qf6 (25...Kh6 26.Be5! f4+-) 26.Nf7 (26.Qf3 Kg5 27.Qg3 Kh5 28.Qh3 Qh4 29.Qf5 Qg5 30.Qh7 Qh6 31.Qf5 Qg5 32.g4 Kh4 33.Ng6 Qg6 34.Qg6 b3 35.Qh5) 26...Be7 (26...Qe7 27.Qd5 Qe4+-) 27.f4 (better is 27.Qf3 Kg6 28.Nh8 Kh6 29.Qh3 Qh4 30.Nf7 Kg6 31.Ne5 Kh6 32.Qf5+-) 27...Qf7 28.Rf3 (28.Rc1 g5 29.g4 fg4+/–) 28...g5 (28...Qe6!?+/–) 29.Rh3 Kg6 30.Qb6 (30.fg5 Kg5 31.Qc6+-) 30...Bf6?? (30...Qf6 31.Qf6 Bf6 32.fg5 Bg5 33.Kf2+/–) 31.Qb4 (better is 31.fg5 Kg5 32.Qb4+-) 31...g4+/– 32.Rg3 Bh4 33.Qd6 Qf6? (33...Kg7 34.Qe5 Kf8 35.Qc5 Kg7 36.Qd4 Kf8 37.Qb4 Kg7 38.e4 Bg3 39.hg3 fe4 40.Qe4+/–) 34.Qd2?? (better is 34.Qf6 Bf6 35.e4 fe4 36.Rg4 Kf5 37.Rg3+-) 34...Bg3= 35.hg3 Qa1 36.Kf2 Qh1?? (better is 36...Qa3=) 37.Qd6+- Kg7 (37...Kf7 38.Qd5 Ke8 39.Qe6 Kd8 40.Qf5+-) 38.Qe7 Kg6 39.Qe6 (39.Qe6 Kg7 40.Qf5+-) 1–0. GuestRRKZ – GuestWTZZ, freechess.org, 2017.

5.c4 Bc5 6.cd5 Ne7 7.Bc4 a6 8.a4 (8.ba6 b5 9.Bb3 Ra6+/–) 8...ab5 9.ab5 Ra1 10.Ba1 Ng6 (10...Nf5 11.d3+=) 11.d4+/– ed4 (11...Bd6 12.Bd3+/–) 12.Bd4 Bb4 13.Nd2 0-0 14.Ngf3 Bg4 15.Qb3 Bd6 16.0-0 c6? (better is 16...Ne5+/–) 17.dc6+- Kh8 18.cb7 Qc7 19.Bd5 Rd8 20.h3 Bf3 21.Nf3 (21.gf3?! Bh2 22.Kh1 Be5 23.Be5 Qe5+-) 21...Ne5 22.Qb2 (22.Rd1 Re8+-) 22...Nf3 (22...Qe7 23.Qc2+-) 23.Bf3 Nd7 (23...Qe7 24.Rd1+-) 24.Rc1 (24.Qc3 Bh2 25.Kh1 Qc3 26.Bc3 Bc7+-) 24...Qb8 25.Bc6 (25.Qc3 Ne5 26.Qc8 Nf3 27.gf3 Rg8+-) 25...Ne5 26.Ra1 Nd3 (26...Qc7+-) 27.Qc3 Bh2 28.Kf1 Ne5 29.Ra8 Qc7 (29...Qd6+-) 30.Bb6! Qb6 31.Qc5!! Qc7 (31...Qc5 32.Rd8 Mate attack) 32.Qf8!! 1–0. GuestPBNJ – VjjV, freechess.org, 2017.

5.d4 ed4 6.Qh5 g6 7.Qd5 Bb4 8.c3 dc3 9.Bc3 c6 +=.

5.Nf3 Bb5?? 6.Bb5+- c6 7.Be2 Bc5 8.d4 Bd6 9.de5 fe5 10.Ne5 Be5 11.Be5 Nf6 12.Bh5 g6 13.Qf3 Kf7? 14.Qf6 Qf6 15.Bf6 Kf6 16.Bf3 Nd7 17.Nc3 Ne5 18.Ke2 Rab8 19.Rab1 Rhe8 20.Rhd1 Ke6 21.h3 b6 22.Bg4 Kf6 23.f4 Nc4 24.Kf3 Re3–+ 25.Kf2 Rc3 26.Re1 Rc2 27.Kg1 Na3 28.Re6 Kf7 29.Rbe1 Kg7 30.Re7 Kh6?? 31.Ra7?? Nc4?? 32.Ree7 Rh8 33.Bf3?? Ne3?? 34.Kh2 b5?? 35.Kg1?? d4?? 36.g4+- Rc1 37.Kf2 Rc2 38.Kg3 Nf1?? 39.Kh4 g5 40.fg5 Kg6 41.Be4 1–0. j1a9n55 – andrevvvv, internet, 2011.

5.Nf3 Ne7 6.c4 dc4 7.Bc4 Nf5 8.0-0 Nd6 9.d3 Nb5?? 10.Qb3?? Nd6=+ 11.Ba3 Nc4 12.Bf8 Na5 13.Qb4?? Nbc6–+ 14.Qh4 Rf8 15.Qh7 Qe7 16.Nc3 0-0-0 17.Rfc1 Rh8 18.Qe4 f5 19.Qa4 Nd4 20.Qa5–/+ Nf3 21.gf3 Qg5 22.Kf1 Rh2 23.Ke2 Qg2 24.Rf1? e4! 25.de4 fe4 26.Ne4 a6 27.Rac1?? Bb5–+ 28.Ke1 Qf1 0–1. horacyad2010 – qigwai, internet, 2011.

5.Nf3 Bg4 6.Be2 Bd6 7.0-0 Qd7 8.Ne1 (8.Nc3 Ne7= (8...Be6 9.a4 Ne7 10.Ba3 Ba3 11.Ra3 0-0 12.d4 e4=) A) 9.a3 Be6 10.d4 e4 11.Nd2 0-0 12.Nb3 Nf5=; B) 9.Rb1 Be6 (9...Bf5 10.a4 a6 11.Nh4 Be6 12.Bh5 g6=) 10.a4 0-0 11.Re1 c5 12.d3 a6+=; C) 9.Re1 Be6 (9...Bf5 10.a4 a6 11.Ba3 Ba3 12.Ra3 ab5=) 10.a4 0-0 11.Ba3 a6 12.Bd6 Qd6+=; D) 9.a4 Be6 (9...Bf5 10.d4 e4 11.Nd2 Qe6 12.Ncb1 Nd7=) 10.Ba3 0-0 11.d4 e4 12.Nd2 a6=) 8...Nh6 (8...Be2 9.Qe2 Ne7 10.Nc3 0-0 11.a4 a6 12.Rb1 f5+=) 9.Bg4 (9.Nc3 Be6 10.f4 e4 11.Bh5 Nf7 12.d3 0-0=) 9...Ng4 10.a4 (10.Nc3 0-0 11.f3 Nh6 12.Nd3 Qe6=) 10...e4 11.g3 (11.f4 0-0 12.Nc3 c6=) 11...Nh6 (11...Ne5 12.d3 Qh3=) 12.Qh5 (12.Nc3 c6=) 12...Nf7?? (better is 12...Qf7 13.Qf7 Nf7=) 13.Qd5+- c6 14.Qe4 Be5 (14...Qe7 15.Qe7 Be7 16.Nc3+-) 15.Be5 Ne5?? (15...fe5 16.f4 Qe7+-) 16.d4 1–0. Engles,Michael – Araujo,Jose Pedro, WCCF, 2002.

5.Nf3 Nh6 6.Be2 Bc5 7.0-0 (7.d4 ed4 8.Nd4 c6+=) 7...e4 (7...Bd6 8.d4 e4 9.Nfd2=) 8.Nd4+= 0-0 9.c4 White launches an attack 9...c6 (9...a6 10.ba6 Na6 11.cd5+=) 10.a4 (better 10.cd5 cd5 11.Qb3+-) 10...Be8? (better 10...Nf5=) 11.Ne6+- Qe7 12.Nf8 (12.Nc5 Qc5 13.Ba3 Qb6 14.Bf8 Kf8+-) 12...Qf8 13.cd5 cd5 14.Nc3 Bf7 15.d3 ed3 (15...Qe7 16.a5+-) 16.Bd3 (16.Qd3 Nd7 17.Nd5 Rd8+-) 16...f5 (16...Qd6 17.a5+-) 17.Qc2 Be6 18.Rac1 Nd7 19.h3 (19.Ne2 Bd6+-) 19...Bd6 (19...d4 20.ed4 Bd4 21.Nd1 Bb2 22.Nb2+-) 20.Ne2 Nc5 21.Nd4 Bd7 22.Be2 Ne4 23.Qb3 Nf6 (23...Qf7 24.Qd1+-) 24.Rfd1 (24.Nf3 Be6+-) 24...Kh8 (24...Rd8 25.a5+-) 25.Rc2 (25.Bf3 f4+-) 25...Qf7 (25...f4 26.ef4 Bf4 27.Bf3+-) 26.Rdc1 (26.Nf3 Nhg8+-) 26...Nhg8 (26...f4 27.Ba3 Ba3 28.Qa3 fe3 29.Qe3+-) 27.Bd3 Ne7 (27...f4 28.e4 Be5 29.ed5 Qd5 30.Qd5 Nd5 31.Rc5+-) 28.b6 (28.Ba3 Ba3 29.Qa3 Ne8+-) 28...a6 (28...Be5 29.f4 Bb8 30.ba7 Ra7 31.Bb5+-) 29.a5 (29.Ba3 Ba3 30.Qa3 Nc6+-) 29...Ne4 (29...f4 30.Ba3 Ba3 31.Qa3 fe3 32.fe3+-) 30.Be4 (30.Ba3 Ba3 31.Qa3 Nc6+-) 30...fe4 31.Ba3 Ba3 32.Qa3 Nc6 33.Nc6 Bc6 34.Rc6 bc6 35.Rc6 h6 36.Qc5 Rb8 (36...Qd7 37.Rc7 Qa4 38.Rc8 Rc8 39.Qc8 Kh7 40.Qf5 Kg8 41.Qd5 Kh7+-) 37.Rc8 Rc8 38.Qc8 Kh7 39.b7 (39.b7 g6 40.b8Q+-) 1–0. retiponziani (1970) – Rednose1312 (1925), ChessWorld.net, 2017.

5.a4 a6

6.c4 dc4 7.Bc4 ab5 8.ab5 Ra1 9.Ba1 Bb4?? 10.Qb3+- Qe7 11.Bg8 Bb5 12.Bc4 (better 12.Bh7!? c5+-) 12...Bc4 13.Qc4 Nc6 (13...Na6 14.Bc3+-) 14.Nf3 (14.Nc3 Na5 15.Qe4 Qd6+-) 14...Na5 (14...Qf7 15.Qc2+-) 15.Qc2 0-0 16.0-0 Nc6 17.Nc3 Kh8 (17...Qf7 18.e4+-) 18.Nd5 Qd6 19.Nb4 Qb4 (19...Nb4 20.Qe4+-) 20.d4 e4 (20...ed4 21.Nd4 Qd6 22.Rc1+-) 21.Qe4 Re8 (21...Ra8+-) 22.Qe8 (22.Qe8 Qf8 23.Qf8) 1–0. BeepBeepImAJeep (2565) – jjj333 (1865), lichess.org, 2016.

6.c4 dc4 7.Bc4 ab5 8.Bg8 Rg8 9.ab5 Ra1 10.Ba1 Qe7 11.Ne2 Bb5-/+ 12.Qb3 Be2 (better 12...Qb4!? 13.Qe6 Kd8-/+) 13.Qg8= Bd3 14.Qb3 Be4 (14...Qc5 15.Nc3 Qc6 16.f3=+) 15.0-0 Nd7 16.Nc3 (16.d4 Qf7 17.Qb2+=) 16...Bc6 (16...Nc5 17.Qg8 Bd3 18.Rc1=+) 17.Ne2 (17.d4!?+/-) 17...Nc5 (17...Qd6 18.Qc2+=) 18.Qg8 h6 (18...Bb5!? 19.Re1 Bd3+=) 19.d4+/- Nd7 20.de5 (20.Nc3 Nb6 21.de5 fe5+/-) 20...fe5 21.Qh7 Qf7 22.Qd3 Bd6 23.Ng3 Nc5 24.Qf5 Attacking the isolated pawn on e5 (24.Qh7 Qd5 25.e4 Ne4 26.Ne4 Qe4 27.Qg7 Qf4+/-) 24...Bd7 (24...Qf5 25.Nf5 Bb5 26.Rc1+= (26.Ng7?! Kf7 27.Nf5 Bf1 28.Kf1 Kg6=+)) 25.Qf7 (better 25.Qh7!?+=) 25...Kf7= 26.h3 b5 27.Rc1 Nd3 (27...Ke6 28.Rb1=+) 28.Rd1= Nb4 (28...Nc5 29.Rc1=) 29.Ne4 (29.Be5!? Be5 30.Rd7 Ke6 31.Rd8+/-) 29...Ke6+= 30.Nd6 cd6 31.Bc3 Nd5 32.Ba1 b4 33.Rb1 Kf5 34.f4 (34.Re1 Nc7=) 34...Ba4 (34...Ke4!?=+) 35.fe5= de5 36.Rc1 Ke4 37.Rc5 Bb3 38.Rb5 Bc4 39.Rb7 (39.Rb8 b3=+ (worse 39...Ne3 40.Rb4 Kd5 41.Rb7+/-)) 39...g6 40.Rg7 g5 41.Rg6 (41.Rg8 b3=+) 41...Ne3-/+ 42.Rh6 Nc2 43.Bb2 Nd4 (43...Ne1!?-/+) 44.Rh5=+ Kf4 (44...Ne6 45.h4=+) 45.Kh2 (45.Kf2 g4+=) 45...b3 (better 45...Ne6=+) 46.g3? (46.Bc1 Ke4 47.Rg5 Ne6=) 46...Kf5 (46...Ke3!? 47.h4 Nf3 48.Kh3 g4 49.Kg2 e4-+) 47.g4 (47.Kg2 Nc2 48.h4 Ne1 49.Kg1 Ke4=+) 47...Kf4-/+ 48.Rh8 (48.Kg2 Ne6-/+) 48...Nf3 49.Kg2 Bd5 (better 49...Ne1 50.Kh2 Bd5-/+) 50.Rf8 (50.Rf8 Ke3 51.Kg3-/+). brucepeng (2025) - gunawan_mn (2135), lichess.org, 2020.

5.c4 dc4

6.Bc4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Qe7 10.Qb3 Nh6 11.Nf3 (11.d4 ed4 12.Bd4 c5=) 11...c6 12.0-0 cb5 13.Bb5 Bb5 14.Qb5 Nc6 15.d4 ed4 (15...e4 16.Nfd2 f5 17.d5+-) 16.Nd4 (16.ed4 Qd7+-) 16...Qd7+= 17.Nc6 Qc6 18.Qb6?? (better 18.Qh5 Nf7 19.Bb2+=) 18...Qb6–+ 19.Nd2 Bb4 20.Nf3 Qa6 21.Bd4 0-0 22.Rb1 (22.Rc1 Ra8 23.h3 Qe2–+) 22...Ba5 (22...Qd3 23.Ra1–+) 23.h3 (23.Ra1 Rc8 24.e4 Qc6–+) 23...Rd8 24.Ra1 Rd4 (better 24...Qc4 25.g3 Qd5 26.Nh4–+) 25.Nd4 Qb5 (better 25...Qc4–+) 26.Nb5+- Bc3 (26...b6+-) 27.Nc3 Nf7 (27...Kf7+-) 28.Ra8 Nd8 29.Rd8 Kf7 30.Rb8 Ke7 31.Rb7 Kd6 32.Rg7 Kc5 33.Rh7 Kc4 34.Rf7 (better 34.Rc7 Kd3+-) 34...Kc3 35.Rf6 Kd3 36.Rf4 Kd2 37.Rd4 Ke1 (37...Kc2 38.f4 Kc1 39.g4 Kb1 40.g5 Kb2 41.f5 Kc2 42.f6 Kc3 43.f7 Kb2 44.f8Q Kb1 45.Rd2 Kc1 46.Rg2 Kd1 47.Qf1) 38.h4 (38.e4 Ke2 39.e5 Ke1 40.e6 Ke2 41.e7 Ke1 42.e8Q) 38...Ke2+- 39.h5 (39.h5 Ke1 40.h6 Ke2 41.h7 Ke1 42.h8Q Ke2 43.Qh5 Ke1 44.Qd1; 39.e4 Ke1 40.e5 Ke2 41.e6 Ke1 42.e7 Ke2 43.e8Q) 1–0. BeepBeepImAJeep (2775) – stas1991 (2010), lichess.org, 2016.

6.Bc4 a6 7.ba6 Na6=.

6.Bc4 a6!? 7.Qb3 Nh6=.

6.Bc4 Bb4?? 7.a3?? (better is 7.Qb3 Qe7 8.Bg8+-) 7...Ba5 8.a4 (8.Be5 a6 9.ba6 Na6+-) 8...c6 (8...Bf5 9.Bc3 c6 10.Ne2=) 9.Qc2 (9.Bg8 Rg8 10.Qh5 Ke7 11.Ba3 Ke6 12.f4 cb5 13.f5 Kd5 14.Qf7 Be6 15.Qe6 Ke4 16.Nh3 Qd2 17.Nd2 Bd2 18.Kd2 Rd8 19.Ke2 Rd2 20.Kd2 Nc6 21.Nf2) 9...Ne7 10.Nf3 Bg4 11.Nh4 Nd7 12.h3 Bh5 13.g4 Bf7 14.f4 (better is 14.bc6 bc6 15.Nf5 Nf5 16.Bf7 Kf7 A) < 17.Qf5 Nc5 18.0-0 A1) 18...Bd2? 19.Rd1+- (19.Nd2 Qd2 20.Rac1 Na4+-); A2) 18...Qd3–/+; B) 17.Qc4 Kf8 18.gf5+=) 14...Bc4 15.Qc4 Nb6 16.Qc2 ef4 17.ef4 0-0 18.Nf5 (better is 18.0-0!?–/+) 18...Nf5–+ 19.Qf5 Qd2?? (19...Re8 20.Kf1 g6 21.Bf6 Qd6–+ (< 21...gf5 22.Bd8 Rad8 23.Rh2–+)) 20.Nd2+- Rad8 (20...Rfe8 21.Kf2 Bd2+-) 21.0-0-0 Bd2 22.Rd2 cb5 23.ab5 Rc8 24.Kb1 Nc4 25.Rc2 Ne3 26.Qe4 Nc2+- 27.Rc1 Rfe8 28.Qb7 Rb8 29.Qa7 Nb4 30.Rc7 Nc6 31.Rg7 Kf8 32.Qf7 1–0. Galaxy8 – jakesh, Live Game Caissa's Web, 2004.

6.Bc4 Bb5?? 7.Bb5+- c6 8.Bc4 Na6 9.Qb3 (better 9.Nf3!? Qb6 10.Qc1 0-0-0+-) 9...Qe7 (9...Nc5 10.Qc2 Ne7+-) 10.Bg8 (10.Bg8 Nc5 11.Qc4+-) 1–0. Beljushina,Sonja (1635) – Gusev,Fedor, Championship Ufa, 2012.

6.Bc4 c6 7.a4 Ne7 8.Nf3 cb5 9.ab5 Bg4? 10.h3 (10.Ne5 fe5 11.Qg4 Nd7+-) 10...Bh5? (better 10...Bf5+=) 11.Ne5!+- Bd1?? (11...fe5 12.Qh5) 12.Bf7 1–0. aravind555 (1635) – nea_ion (1615), lichess.org, 2018.

6.Bc4 Bd6 7.Qb3 Qe7?? 8.Bg8+- Bb5 (8...Bf5+-) 9.Qb5 c6 10.Qb7 (better 10.Qc4 b5 11.Qb3+-) 10...Qb7-+ 11.Bc3 (11.Bb3-+) 11...Rg8 12.Nf3 Nd7 13.0-0 Rb8 (13...e4 14.Nd4-+) 14.d4 ed4 (14...e4 15.Nfd2 c5 16.a4-+) 15.Bd4 c5 16.Bc3 Ne5 17.Nbd2 Nf3 18.gf3 (18.Nf3 Kf7-+) 18...Be5 (18...Qc7 19.h3-+) 19.Rfc1 (19.Ne4 Ke7 20.Rfc1 Rgc8-+) 19...Bc3 20.Rc3 Rc8 (20...Qb2!? 21.Rb1 Qc3 22.Rb8 Kf7 23.Rb7 Kg6 24.Ne4 Qe1 25.Kg2-+) 21.Rac1 Qb2 (21...Qd5 22.Nb3-+) 22.R3c2 (22.Nc4 Qb8 23.Rb3 Qc7-+) 22...Qe5 (22...Qa3 23.Ne4-+) 23.Kg2 (23.Ne4 c4!-+) 23...Qg5 24.Kf1 h5 (better 24...Qh5!? 25.Kg2-+) 25.Ne4 Qh4 (25...Qe5 26.Kg2-+) 26.Kg2 (26.Nd6 Kd7 27.Nc8 Rc8 (worse 27...Kc8 28.Rc5 Kb7 29.Kg2-+) 28.Rc5 Rc5 29.Rc5 Qh2-+) 26...Kd7 (26...g6 27.Nd6 Kd7 28.Nc8 Qg5 29.Kf1 Rc8 30.Ke2-+) 27.Nc5 (27.Rc5 Rc5 28.Rc5 g6-+) 27...Ke7 28.Rc4 Qg5 29.Kf1 Rc6 30.Ke2 (30.Re4 Kf7 31.Rec4 Rgc8-+) 30...Rgc8 31.Ne4 (31.h4 Qd5 32.e4-+) 31...Qb5 32.Nd2 (32.a4 Qa6 33.Nd2 Rc4 34.Nc4 Rc4 35.Rc4 Qc4 36.Ke1 Qa4-+) 32...Rc4 33.Nc4 Rc4 34.Rd1 Qb2 (34...Rc2 35.Ke1 Qe2) 35.Ke1 Rc2 36.Rb1 (36.Rd4 Rf2 37.Re4 Kf7 38.Re7 Ke7 39.e4 Qd2) 36…Qb1 0-1. ClayPigeons (2160) - Lez1995 (2100), Rated Bullet game, lichess.org, 2021.

6.Bc4 Qe7 7.Qb3 Nh6 8.Ba3 Qd8 9.Nf3 Ba3 10.Qa3 (10.Na3 Qe7=) 10...Qe7 (10...Bg4 11.d3=) 11.Qb3 (11.d4 ed4 12.Nd4 a6+=) 11...a6 (11...Bg4 12.Bd5 c6 13.bc6 bc6 14.h3=) 12.Nc3 (12.ba6 ba6 13.0-0 Nc6+=) 12...ab5= 13.Nb5 Bb5 (13...Bg4 14.Nc3 Bf3 15.gf3=) 14.Bb5 c6 15.Bc4 Na6 (15...b5 16.Be2=) 16.0-0 Nc5 (16...e4 17.Nd4+=) 17.Qc2 e4 18.Nd4 g5 (18...Ra3 19.Rfb1 Qe5 20.f4 ef3 21.Nf3+=) 19.Rfc1 f5 (19...Ra3 20.Rab1 Rf8 21.Be2+-) 20.a4 (20.Be2 Nd3 21.Bd3 ed3 22.Qd3 Rf8+-) 20...g4 (20...Rf8!?+=) 21.a5 Nd7 (21...Rf8 22.a6! Rf6 23.ab7 Qb7 24.Ra8 Qa8 25.Be2+-) 22.Ne6 Ne5 (22...Nf8 23.Qb2 Rg8 24.Nc5+-) 23.Bb3 (23.Qb2!? Ng6+-) 23...Nd3 24.Rcb1 g3 (24...Rc8 25.Bc4+-) 25.hg3 (25.fg3 Rc8+-) 25...Ng4 (25...Rc8 26.Qc3 Rg8 27.Bc4+-) 26.Qc3 (26.a6 Rc8 27.ab7 Qb7 28.Qc3+-) 26...Rf8? (better 26...Nge5+/-) 27.Nf8+- Qf8 28.Bc2 Qh6 (28...Nde5 29.Bd1 Qe7 30.Bg4 fg4 31.Rb4+-) 29.Bd3 (better 29.Qh8 Qf8 30.Qf8 Kf8 31.Bd3 ed3 32.Rb7 Ra6+-) 29...Qh2 30.Kf1 ed3 (30...Qh1 31.Ke2 ed3 32.Qd3+-) 31.Qd3 Rd8 (31...Qh1 32.Ke2 Qh5+-) 32.Qf5 Rd2 33.Qe6 (better 33.Qc8 Rd8 34.Qg4+-) 33...Kf8 (33...Kd8 34.Ke1 Rd7 35.Qg4 Ke7 36.Qg5 Ke6+-) 34.Qc8 Kg7 35.Rb7 Kh6 (35...Kg6 36.Qe8 Kf5 37.e4 Kf6 38.Rf7 Kg6 39.Qg8 Kh5 40.Rf5 Kh6 41.Qg5) 36.Qe6 Kh5 (36...Kh5 37.Rh7 Kg5 38.f4; 36...Nf6 37.Qf6 Kh5 38.Rh7 Kg4 39.Qg6). ClayPigeons (2170) - mate_in_x (2080), Rated Blitz game, lichess.org, 2021.

6.Bc4 Qe7 7.Bg8 Rg8 8.Qh5 g6=+ 9.Qe2 (9.Qf3!? e4 10.Qe2=+) 9...Qb4–/+ 10.Ba3 Qb5 11.Qb5 Bb5 12.Bf8 Rf8 13.Nc3 Bd3 14.Nd5 (14.a3 Nc6–/+) 14...Rf7 (14...Na6 15.Nf3–+) 15.Rc1? (15.Nb4 Be4 16.f3 a5–+) 15...Nc6 (15...Be4 16.Nc7 Rc7 17.Rc7 Bg2 18.Rh7 Bh1 19.Rh8 Ke7 20.f3–+) 16.Ne2 (16.Nc3 Rd8–+) 16...0-0-0 (16...Be4 17.Ndc3 Bg2 18.Rg1–+) 17.Nec3 Na5 (17...f5 18.f3–+) 18.Nb4 Nc4 (18...Rfd7 19.Nd3 Rd3 20.Rc2–+) 19.Nd3 (19.Nb5 a6 20.Na7 Kb8 21.Nac6 bc6 22.Nd3 Rd3 23.Rc4 Rfd7=+) 19...Rd3–+ 20.Ke2 (20.Ne4 b5–+) 20...Rfd7 (20...Rd2 21.Kf3 Nd6 22.Rhd1 e4 23.Kg4 f5 24.Kg3–+) 21.Rhd1 (better 21.Ne4 b5 22.Rhd1–+) 21...Nd2?? (better 21...Nb2 22.Ne4 Nd1 23.Rd1 Ra3 24.Nf6 Rf7–+) 22.Rc2 e4?? (better 22...Rc3 23.Rc3 Ne4=+) 23.Rcd2+- Rc3? (better 23...Rd2 24.Rd2 f5+-) 24.Rd7+- Rc2 25.R7d2 (better 25.Ke1 b5 26.Rh7+-) 25...Rc4 (25...Rd2 26.Rd2 f5 27.f3+-) 26.f3 (26.Rd8) 26...ef3 27.Kf3 b6 (27...b5 28.g4+-) 1–0. aravind555 (1785) – hasan21 (1775), lichess.org, 2020.

6.Bc4 Bc5

7.Qb3 Qe7?? 8.Bg8+- a5 (8...a6 9.ba6 Ra6 10.Bd5+- (10.Qb7?! Rb6 11.Qe4 Bc6+=)) 9.Bc4 (better 9.Bh7!? a4 10.Qd3 Qd6+-) 9...a4 10.Qc2 b6 (10...a3 11.Bc1+-) 11.a3 c6 12.Nc3 cb5 13.Bb5 (13.Nb5 Bc6 14.Nf3 Qd7+-) 13...Nc6 (13...Bb5 14.Nb5 Qd7 15.Nc3+-) 14.Na4 Ra5 15.Nc3 0-0 16.Qb3 Kh8 17.Nge2 Be6 18.Qc2 (18.Bc4 Bc4 19.Qc4 Rd8+-) 18...Bd7 (18...Rc8 19.Qb1+-) 19.Kf1 (19.0-0!? Rc8+-) 19...Rb8 20.Nd5 (20.Bd3 h6+-) 20...Qe6 (20...Qd6 21.Bc4+-) 21.Bc4 Qg4 (21...b5 22.Ba2 b4 23.d4 ed4 24.Nb4 Nb4 A) 25.Be6? Nc2 26.Rc1 Be6 27.Rc2 d3-+ (27...de3?! 28.fe3 Bf5 29.Rc5 Rc5 30.Bd4-+); B) 25.ab4?! Ra2 26.Qc5 Rb2=; C) 25.Qc5 Rc5 26.Be6+/-) 22.h3 Qg5 23.d4 (23.Kg1 Qh4+-) 23...ed4 24.ed4 Bd6 25.f4 (better 25.Ndc3 Re8+-) 25...Qg6 (25...Qh4+-) 26.Qg6 hg6 27.Bc3 (better 27.Kf2 b5 28.Bd3 Bf5 29.Bf5 gf5+-) 27...Be6 (27...Ra3 28.Ra3 Ba3+-) 28.Ba5 Na5 29.Ba2 Bd5 (29...Ba3 30.Nf6! Bb2 31.Be6 Ba1 32.Nd7+-) 30.Bd5 Rd8. ClayPigeons (2125) - mefjacz (2080), Rated Bullet game, lichess.org, 2021.

7.Qb3 Nh6 8.Nf3 Qe7 9.0-0 c6 10.a4 (10.d4 e4 11.Nfd2 Bd6+-) 10...Nf7 (10...e4 11.Nd4 Nf7+-) 11.d4 Bb6? (11...Bd6 12.Nbd2 Kf8 13.d5+-) 12.de5 (12.Ba3 Nd6 13.a5 cb5 14.Bd6 Qd6 15.Bf7 Kf8 16.ab6 a5 17.de5 fe5+-) 12...fe5 (12...Ne5 13.Ne5 fe5+-) 13.Bf7 (better 13.Nc3 Nd6 14.Ba3+-) 13...Qf7 14.Qf7 Kf7 15.Ne5 Kf8 (15...Ke6 16.Na3+-) 16.Rd1 Be8 (16...Ke7 17.a5 Bc5 18.Nc3+-) 17.Nc3 cb5? (17...Kg8 18.Rac1 h6 19.Ne4+-) 18.Nb5 (better 18.ab5!? Bc7 19.Nd5 Be5 20.Be5 Nd7+-) 18...Nc6 19.Nd6 (better 19.Nd7 Ke7 20.Nb6 ab6+-) 19...Rb8? (better 19...Ne5 20.Be5 Bc6+-) 20.Ne8 (20.Nf5 h6+-) 20...Re8 (20...Ke8 21.Nd7 Rc8 22.Bg7+-) 21.Nc6 bc6 22.Rd7 (better 22.a5 Bc5 23.Rac1 Bb4+-) 22...Rg8 (22...Re7 23.Ba3 c5 24.Re7 Ke7+-) 23.Ba3 c5 24.a5! Re7 (24...Ba5 25.Bc5 Deflection (25.Bc5 Decoy)) 25.Re7 (25.ab6?! Rd7 26.Bc5 Kf7 27.ba7 Ra8+-) 25...Ke7 26.ab6 ab6 27.Rb1 (27.Bb2!? g6+-) 27...Rb8 (27...Ra8 28.Bb2 g5+-) 28.Bc5! (28.Bc5 Kd7 29.Rb6+-) 1-0. Pandacmoi (2140) - hoscarua (2215), Rated Blitz game, lichess.org, 2017.

7.Nc3 c6+= 8.Ne4 cb5?? (better is 8...Be7 9.Be5 cb5 10.Bg8 Rg8 (worse is 10...fe5 11.Qb3 Bc6 12.Ng5+/–) 11.Qh5 g6 12.Qh7 Be6+=) 9.Bg8+- Be3 (9...Bf8 10.Qb3 Qe7+-) 10.Qb3 (10.fe3 Qe7 11.Qb3 f5 12.Bf7 Kd8+-) 10...Bd2 (10...Bf2 11.Nf2 Qc7 12.Qf7 Kd8 13.Qg7 Rg8 14.Qg8 Be8 15.Ne4+-) 11.Nd2 (11.Kd2?! Be6 12.Qd3 Qd3 13.Kd3 Rg8 14.Nd6 Kd7 15.Nb5 Nc6+=) 11...Qe7 12.Ba3 Qa3 13.Qa3 Rg8 14.Ne4 Nc6 15.Nd6 Kd8 (15...Kf8 16.Nb5 Ne7 17.Nc7+-) 16.Nb5 Re8 17.0-0-0 Kc8 (17...Re7 18.Qb3 Rc8+-) 18.Qd6 Bf5 (18...Rd8 19.Qc7) 19.Qc7 1–0. pierre – opportox, internet, 2010.

7.Be5!+- fe5?? 8.Qh5 g6 9.Qe5 Be7 (9...Be6 10.Qe6 Qe7 11.Qc8 Qd8 12.Qb7 Nd7+-) 10.Qh8 Bf6 (10...Bf8 11.Qg8 Qe7 12.Nc3+-) 11.Qg8 (11.Qg8 Ke7 12.Qh7 Kd6 13.Qg6+-) 1–0. pierre – ppjw, internet, 2010.

7.Be5!? Be7 8.Bf4+-.

6.Bc4 Ne7

7.Qb3 Bf5?? 8.Bf7+- Kd7 9.Nc3 Kc8+= 10.e4 Bg6 11.Be6 Nd7 12.Rc1 c6 13.bc6 Nc6 14.Nb5 a6 15.Na3 Ba3 16.Ba3 Qc7 17.f3 Re8 18.Ne2 b5? 19.d4! ed4 20.Nd4! Kb7 21.Rc6 Qc6 22.Nc6 Nb6 23.Na5 Ka7 24.0-0 Red8 25.Rc1 Rab8 26.Rc7 Ka8 27.Qc3 Be8 28.Nc6 Bc6 29.Qc6 (29.Qc6 Rb7 30.Qb7) 1–0. elsh1403 – hakigashi (1680), internet, 2011.

7.Qb3 Nf5 8.Bf7 Ke7+=.

7.Qb3 Ng6?? 8.Nf3 Be7 (8...Bd6 9.Bf7 Kf8 10.Nc3+=) 9.d4 e4 (9...ed4 10.Bd4 c6 11.0-0+/-) 10.Nfd2 f5 11.Nc3 (11.Bg8 Qc8+/-) 11...c6 (11...Bd6 12.Bf7 Kf8 13.g4+/-) 12.a4 (12.Bg8 Qa5 13.Qf7 Kd8 14.Bh7 Rh7 15.Qg6 Rh4 16.Qg7 Be8+-) 12...cb5 13.ab5 b6?? (13...Rf8!?+/-) 14.Nd5 (better 14.Bd5 Na6 15.Ba8 Nb4 16.Ra7 Nd3 17.Kf1 Qb8+-) 14...Kf8? (14...Bd6 15.Nb6! Qb6 16.Bd5 Bb5 17.Ba8+-) 15.0-0 (15.Ne7 Ne7 16.Bd5 Bc6 17.Bc6 Nbc6 18.bc6 Qd5 19.Qd5 Nd5+-) 15...Be6?? (better 15...Bc8+-) 16.Ne7 Bc4 17.Qc4 (better 17.Ng6 hg6 18.Nc4+-) 17...Qe7?? (better 17...Ne7 18.Ba3 Nd7+-) 18.Ba3 (18.Ba3 Nd7 19.Be7 Ke7 20.Qd5+-) 1-0. ClayPigeons (2075) - Elmir_2007 (2030), Rated Bullet game, lichess.org, 2020.

7.Qb3 Ng6?? 8.Bf7 1–0. GuestMMFQ – GuestXDYX, freechess.org, 2017.

7.Nc3 c6 8.a4 (8.Qb3 Qc7+=) 8...cb5 (8...Nf5 9.d4=) 9.ab5+= g6? (9...Nf5 10.Nf3+=) 10.Ne4 (better 10.Qf3!? Nc8 11.Nd5+-) 10...Nf5+= 11.f4 ef4?? (better 11...Nd6 12.Nd6 Bd6+-) 12.Nf6+- Ke7 13.Nd5 (13.Qc2 Nd6 14.Ne4 Ke8+-) 13...Ke8 14.Bh8 (worse 14.ef4 Be6 15.Nf6 Ke7 16.Be6 Bg7+-) 14...Qh4 15.Kf1 Ng3 (15...f3 16.Qc2 Ng3 17.hg3 Qh1 18.Qe4 Kd8 19.Qf3 Bf5 20.Bf6 Be7 21.Ne7 Bd3 22.Bd3 Ke8 23.Qe4 Qg1 24.Kg1 Kd7 25.Qb7 Ke8 26.Qc8 Kf7 27.Rf1 a5 28.Bc4) 16.hg3 Qh1 17.Nc7 Kd8 18.Na8 fg3 (18...Bc5 19.Bf6 Be7 20.Be7 Ke7 21.ef4+-) 19.Bf6 Kc8 20.Be5 (20.Qc1 Qh5 21.Be2 Qc5+-) 20...Qh5 (20...Bf5 21.Qf3 Qh4 22.Be6 Nd7 23.Bd7 Kd8 24.Bf5 Qc4 25.Ke1 gf5 26.Qb7+-) 21.Qh5 gh5 22.Bg3 a6 23.Nb6 Kd8 24.Nd7 (24.Bb8 Bb5 25.Bb5 ab5+-) 24...Nd7 25.ba6 ba6 26.Ba6 (26.Ba6 Bg7 27.d4+-; 26.Ra6 Bb4+-) 1–0. aravind555 – kipsa, lichess.org, 2018.

5.c4 c6

6.a4 a6 7.Qb3 Qc7 (7...Be6!?+=) 8.cd5+= ab5 9.ab5 (9.dc6!? bc6 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qc1 13.Ke2 Bb5 14.Qb5 Nd7 15.Bc3+=) 9...Ra1= 10.Ba1 c5 (10...cd5!? 11.Nc3 Ne7=) 11.e4+/– Bd6 12.Be2 Ne7 13.Nf3 0-0 14.0-0 f5? (14...Ng6 15.Bc4+/–) 15.Nc3 (15.Be5 fe4 16.b6 Qc8 17.Bd6 ef3 18.Bf3 Re8+-) 15...b6 (15...Qd8 16.Ne5! Be5 17.d6 Kh8 18.de7 Qe7 19.Qd5+=) 16.Bb2 (16.Ne5 Re8+-) 16...Ng6+/– 17.Ng5 fe4 18.Ne6 Rf6?? (better is 18...Be6 19.de6 Re8+-) 19.Nc7 Bc7 (19...Nf4+-) 20.d6 Be6 21.Bc4 (better is 21.dc7 Bb3 22.cb8Q Rf8 23.Qb6 Rc8+-) 21...Bd6 22.Be6 (22.Be6 Kh8 23.Ne4+-) 1–0. GuestMZCR – GuestKVTF, freechess.org, 2017.

6.a4 a6 7.Nf3 ab5 8.ab5= Ra1 9.Ba1 dc4 10.Bc4 cb5=+ 11.Bg8 Rg8 12.Qb3 Rh8 13.Nc3 Qb6 14.0-0 Be6=+ 15.Qb5 Qb5 16.Nb5 Na6 17.Rc1 Bc5 18.d4= ed4 19.ed4 Be7=+ 20.Nc7 Nc7 (20...Nc7 21.Rc7 Bd5=+). Istvanny – Rickytan (1765), internet, 2007.

6.a4 cb5 7.ab5 dc4 (7...Be6 8.cd5 Qd5 9.Nc3=) 8.Bc4 Qb6 (8...Bf5 9.d4=) 9.Bg8 (9.Qb3!? Nh6 10.d4+=) 9...Rg8= 10.Qh5 (10.Nc3 Rh8= (worse 10...Bb5 11.Qb3 Ba6 12.Qg8 Qb2 13.Qe6 Kd8 14.Rb1+=)) 10...g6=+ 11.Qh7 Rg7 12.Qh8 Qb5 13.Ba3 Threatening mate... how? 13...Rf7 14.Nc3 Be6?? (better 14...Qd3=) 15.Bf8 (better 15.Nb5 Kd7 16.Bf8+-) 15...Rf8 (15...Qc6 16.Bg7 Ke7+-) 16.Qh6 (better 16.Qf8 Kf8 17.Nb5+-) 16...Bf7?? (16...Qd3 17.Nge2=+) 17.Nge2 (better 17.Nb5 Na6 18.Nd6 Ke7 19.Nf7 Rf7 20.Qg6+-) 17...Qc6 (17...Qd3 18.Qh4=) 18.0-0+= Nd7 19.Rac1 (better 19.Rfc1+=) 19...Qe6?? (19...b5 20.e4 Nc5 21.d4 Ne4 22.de5 fe5 23.Ne4 Qe4 24.Nc3+-) 20.Ne4 (better 20.Nb5 Qg4 21.Nc7 Ke7 22.Na8 Qe2 23.Nc7+-) 20...Qf5?? (better 20...b6=) 21.Nd6+- (21.Nd6 Kd8 22.Nf5 gf5 23.d4+-) 1–0. aravind555 – sidb21, lichess.org, 2019.

6.cd5 cd5 7.f4 ef4 (7...Bd6 8.fe5 fe5 9.Be5+/-) 8.Qh5+/- (8.ef4?! Qe7 9.Qe2 Bg4 10.Qe7 Ne7=) 8...g6 9.Qd5 fe3? (better 9...Qc7 10.Bc4 Bf5 11.ef4 Nd7 12.Qf7 Kd8+/-) 10.Qb7+- (10.de3?! Qc7+=) 10...ed2 (10...Bb4 11.Qa8 Bd2 12.Kd1+-) 11.Nd2 Bb4 12.Ngf3 (better 12.Rd1 Bg4 13.Qa8 Bd1 14.Qe4 Qe7 15.Kd1 Bd2 16.Qe7 Ne7 17.Kd2+-) 12...Bg4 13.0-0-0 (better 13.Qe4 Qe7 14.Ne5 fe5 15.Qa8+=) 13...Nd7?? (better 13...Bf3 14.Nf3 Nd7+/-) 14.Qe4+- Kf7 1-0. onur604 (2320) - glimsbirne (2210), Casual Rapid game, lichess.org, 2021.

5.c4 Be6

6.cd5 Qd5 7.Nc3 Qd8 8.Nf3 Bd6 9.Be2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Ne7 13.0-0 0-0 0–1. St_Jean,Benoit – Pons,Francisco, ZI–2010-0-00774, 2010.

6.cd5 Bd5 7.Nc3 c6 8.Nf3 a6 9.a4 (9.Nd5 Qd5 10.Qb3 ab5 11.Qd5 cd5 12.Bb5 Nd7=) 9...cb5 (9...ab5!? 10.Nd5 Qd5 11.ab5 Ra1 12.Qa1 e4 13.bc6 A) 13...ef3?? 14.c7 Kf7 15.cb8Q+- (15.cb8B?! fg2 16.Bg2 Qg2 17.Qa2 Ke8 18.Qa4 Kd8 19.Qa5 Ke8 20.Qb5 Kf7+=); B) 13...Qc6? 14.Nd4 Qd5 15.Qa4 Nc6 16.Bc4+-; C) 13...bc6=) 10.Nd5 Qd5 11.ab5 e4 12.Nd4 Nd7 (12...Bc5!?+/–) 13.ba6 Rb8 (better is 13...ba6!? 14.Ba6 Rb8+-) 14.a7+- Ne7?? (14...Ra8+-) 15.ab8Q Kf7 (15...Nb8 16.Ra8 Kf7 17.Rb8 f5+-) 16.Qc7 (better is 16.Qd8!? f5 17.Qc2 Kg6+-) 16...Ne5 17.Ra5 Qd7 18.Qd7 Nd7 19.Bc4 Ke8 (19...Nd5 20.Bd5 Ke7 21.Ba3 Nc5 22.Bc5 Kd7 23.Qa4 b5 24.Qb5 Kc7 25.Ne6 Kc8 26.Ra8) 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.

5.d4 e4

6.c4?? Be6= 7.cd5 Qd5 (7...Bd5 8.Nc3=) 8.Nc3 Bb4 9.Qa4 Bc3 10.Bc3 Bd7 (10...c6 11.Bb4=) 11.Bc4 (11.Rc1 a6 12.Bb4 Bb5 13.Bb5 Qb5+=) 11...Qg5 12.g3 Ne7 13.Qb3 c6 14.h4 (14.h4 Qh5 15.bc6 Bc6 16.Qd1 Qd1 17.Rd1+=). Fredek (2090) – Guest1756886, Freundschaftspartie, 5m + 0s, 2005.

6.Qh5 g6 7.Qd5 Ne7? 8.Qb7 (8.Qe4?! c6+-) 8...Bg7 (8...Nbc6 9.bc6 Nc6+-) 9.Qa8 0-0 (9...a6 10.ba6 Bc6 11.Bb5 Bb5 12.a7+-) 10.Bc4 Kh8 11.Qa7 f5 (11...Nf5 12.Ba3 Nd6 13.Bd6 cd6 14.a4+-) 12.Ne2 Rf6 (12...c6 13.b6 Nd5 14.Ba3+-) 13.d5 Rd6 14.Bg7 Kg7 15.Qd4 Kg8 16.Nf4 Kf8 (16...h6 17.a4 g5 18.Nh5+-) 17.Qh8 Ng8 18.Ne6 (better 18.Qh7 Qf6 19.c3 Ne7+-) 18...Be6 19.de6 Rd1 (19...Qe7+-) 20.Ke2 Rh1 Do you see the mate threat? 21.Qg8! Ke7 (21...Kg8 A deflection 22.e7 A double attack) 22.Qf7 Kd6 23.e7! Qe7 Blocks the square `8 24.Qd5 A beautiful mate combination 1–0. GuestMFWQ – GuestPDSF, freechess.org, 2020.

5.Nf3 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 dc4 10.Bc4 cb5 11.Ba2 Ne7 12.Qb3 Bc6 (12...Qc7 13.Nc3=) 13.Qf7 Kd7 14.Be6 (better is 14.Qe6!? Ke8 15.Qf7 Kd7 16.0-0=) 14...Kc7+= 15.Nc3? (better is 15.Qh5 Qd3 16.Nc3–/+) 15...Be8 16.Nd5 (16.Ne5 Bf7 17.Nf7–+) 16...Kd6 17.Be5 (17.Ne5 fe5 (17...Bf7?! 18.Nf7 Ke6 19.Nd8 Kd5 20.d3–+) 18.Qf3 Ke6 19.Ne7 Qe7 20.Qg4 Kd5–+) 17...fe5 18.Ne5 (18.Ng5 Bf7 19.Nf7 Ke6 20.Nd8 Kd5–+) 18...Bf7 (better is 18...Ke5 19.Qf4 Ke6 20.Nc7 Kd7 21.Nb5–+) 19.Nf7 Ke6 20.Nd8 Kd5 21.e4 (21.Ke2 Nec6 22.Nb7 Bb4–+) 21...Ke4 22.0-0 (22.Nf7 Rg8–+) 22...Kd3 (22...Nec6!? 23.Nf7 Rg8 24.Rb1–+) 23.Nf7 Rg8 24.Rb1 Nec6 25.Rb5 Kd2 26.g3 Bb4 27.Rb7 Rf8 (27...Re8 28.Kg2–+) 28.Kf1 (28.Ng5 Be7 29.Ne6 Rf7–+) 28...Bc5 (28...Be7 29.Ne5–+) 29.f4 h6 30.Rb2 Kd3 31.Rb3 (31.Rb7 Ke4 32.h3 Kd5–+) 31...Kd4 32.Rb7 g5 (32...Kd5 33.Kg2–+) 33.Ke2 (33.Nh6 gf4 34.Rf7 f3–+) 33...gf4 34.gf4 h5 (34...Ke4!? 35.Rc7–+) 35.Kf3 Kd5 36.Ng5 (36.Kg3 Nd4 37.Kh4 Kc6 38.Rb8 Rb8 39.Kh5 Kd5–+) 36...Bd6 37.Rb5 (37.Nh3 Nd4 38.Ke3 Re8 39.Kf2 Re2 40.Kg1 h4–+) 37...Kc4 (37...Kc4 38.Rb1 Rf4 39.Ke3 Nd4 40.Rc1 Kd5–+) 0–1. GuestFLYG – GuestCLTZ, freechess.org, 2017.

6.Nc3 Ne7 7.ba6 Na6 8.Be2=.

5.Nf3 c6

6.a4 a5 7.ba6 (7.Be2 Bd6=) 7...Na6=+ 8.c4 Nb4 9.cd5 Bf5 10.d3 (10.Na3 Nd5 11.Bc4 Qb6=+) 10...Qd5 (10...Nd5 11.e4 Qb6 12.Ba3 Qa5 13.Nfd2 Ba3 14.Na3+-; 10...cd5?! 11.Be2=+) 11.e4 Be4 12.de4 Qe4 13.Be2 Nc2 14.Kf1 Na1 15.Nc3 Qc2 16.Qc2?? (better 16.Qa1 Bb4 17.Ne1=+) 16...Nc2–+ 17.Bd3 Nd4 18.Nd4 ed4 19.Ne4 (19.Ne2 c5–+) 19...Ra4 20.Ke2 (20.Ke1 b5–+) 20...Rb4 (better 20...Ra2 21.Rb1 Ba3 22.Bc4 Rb2 23.Rb2 Bb2 24.Nd6 Kf8 25.Nf7–+) 21.Rb1 (21.Ba3 Rb3 22.Bc1 c5–+) 21...Nh6 (21...b5 22.Kd1–+) 22.Ng3 (22.Bc1 Rb1 23.Bb1 Nf7–+) 22...Bd6 (22...c5 23.Bc1 c4 24.Rb4 cd3 25.Kd3 Bb4 26.Bh6 gh6 27.Kd4–+) 23.Nf5 (23.Ne4 Be7–+) 23...Bh2 (better 23...Nf5!? 24.Bf5 g6 25.Be4–+) 24.Bd4 Rb1 25.Bb1 Be5 (25...Nf5!? 26.Bf5 Bd6 27.Bb6–+) 26.Be5 (26.Ng7 Kf7 27.Be5 fe5–+) 26...Nf5 27.Bf5 (27.Bf6 Ng3 28.Kf3 gf6 29.Kg3 b5–+) 27...fe5 28.g4 (28.Be4 Kd7–+) 28...Kf7 29.Kf3 (29.Be4 g6–+) 29...g6 30.Bd3 h5 31.gh5 Rh5 (31...gh5!? 32.Bf5–+) 32.Bc4 Kf6 33.Kg3 Rg5 34.Kf3 Kf5 (34...Rf5!? 35.Ke3–+) 35.Bd3 Kf6 (35...Ke6 36.Be4–+) 36.Ke3?? (36.Bc4 Rf5 37.Ke3–+) 36...Rg4 37.Be2 Rh4 38.Bd3 Rh3 (better 38...Rd4 39.Bc2–+) 39.Ke2 (39.f3 b5–+) 39...g5 (better 39...Rd3 40.Kd3 Kf5 41.Ke3–+) 40.Be4 g4 41.Bg2 (41.Kf1 Kg5 42.Bc2 Rc3–+) 41...Rh2 42.Be4 Kg5 (better 42...g3 43.Kf1 Rf2 44.Kg1–+) 43.Ke3 b5 (better 43...Rh3!? 44.Ke2–+) 44.Bc6 b4 45.Ba4 Rh3 46.Ke4 Rh2 (better 46...Rf3 47.Ke5 Rf2–+) 47.Ke5?? (47.Ke3 b3 48.Bb3 Rh3 49.Ke4 Rb3 50.Kd5–+) 47...Rf2–+ 48.Ke4 g3 49.Ke3 Kg4 (better 49...Rf6 50.Kd4–+) 50.Bd7 Kh4 51.Be6 Rh2 (better 51...Rf1 52.Bd5 b3 53.Kd2–+) 52.Bd5 g2 (better 52...Rc2 53.Kd3 Rc5–+) 53.Bg2 (53.Kf2–+) 53...Rg2 54.Kd4 Rc2 55.Kd3 (55.Kd5 b3 56.Kd4 b2 57.Ke4 b1Q 58.Kd5 Rd2 59.Ke5 Qb8 60.Ke6 Qf8 61.Ke5 Kg5 62.Ke4 Qf4) 55...Rc8 (55...b3 56.Kd4 b2 57.Ke4 b1Q 58.Kd4 Qd1 59.Ke5 Re2 60.Kf6 Qd6 61.Kf5 Qe6 62.Kf4 Qe4) 56.Kd4 (56.Kd2 b3 57.Ke3 b2 58.Ke4 b1Q 59.Ke5 Rc5 60.Kd4 Qb4 61.Ke3 Rc3 62.Ke2 Qb2 63.Ke1 Rc1) 56...b3 57.Ke4 (57.Ke3 b2 58.Ke2 b1Q 59.Ke3 Qd1 60.Kf4 Re8 61.Kf5 Qd7 62.Kf6 Re6 63.Kf5 Qf7) 57...b2 58.Kf5 (58.Kd3 b1Q 59.Kd4 Qd1 60.Ke4 Re8 61.Kf5 Qd7 62.Kf6 Re6 63.Kf5 Qf7) 58...b1R (58...b1Q 59.Ke5 Rc5 60.Kf4 Qb4 61.Ke3 Rc3 62.Ke2 Qb2 63.Ke1 Rc1) 59.Ke6 Rd1 60.Kf5 Re8 (60...Re1 61.Kf6 Rc6 62.Kg7 Re7 63.Kf8 Rb7 64.Ke8 Rc8) 61.Kf6 Kg3 62.Kf7 Re2 (62...Re4 63.Kf8 Rf1 64.Kg7 Rg4 65.Kh6 Rh1) 63.Kf6 (63.Kg6 Rd6 64.Kg7 Rd7 65.Kf6 Kg4 66.Kg6 Re6) 63...Kf3 (63...Rd7 64.Kg5 Rd6 65.Kf5 Rde6 66.Kg5 R2e5) 64.Kf5 (64.Kg6 Rd6 65.Kg7 Rd7 66.Kg6 Kg4 67.Kf6 Rde7 68.Kg6 R2e6) 64...Rd4 (64...Rd6 65.Kg5 Re5 66.Kh4 Rh6) 65.Kf6 (65.Kg6 Rf4 66.Kg5 Rg2 67.Kh5 Rfg4 68.Kh6 Rh4) 65...Kf2 (65...Rf4 66.Kg5 Rg2 67.Kh5 Rfg4 68.Kh6 Rh4) 66.Kf5 (66.Kg7 Rg4 67.Kf7 Rf4 68.Kg6 Kf3 69.Kg5 Rg2 70.Kh5 Rfg4 71.Kh6 Rh4) 66...Ke1 (66...Rd6 67.Kf4 Rd5 68.Kg4 Re4 69.Kh3 Rh5) 67.Kf6 Rf2 (67...Rf4 68.Kg5 Rf1 69.Kg4 Rg2 70.Kh3 Kf2 71.Kh4 Rh1) 68.Ke5 Rd3 69.Ke4 (69.Ke6 Re2 70.Kf7 Rf3 71.Kg6 Rg2 72.Kh5 Rh3) 69...Re2 (69...Rfd2 70.Kf5 Rd6 71.Kg5 Ke2 72.Kg4 R2d4 73.Kf5 Kf3 74.Kg5 R4d5 75.Kh4 Rh6) 70.Kf4 (70.Kd3 Re8 71.Kd4–+) 70...Kd2 (70...Rd5 71.Kg3 Re3 72.Kg4 Kf2 73.Kf4 Red3 74.Kg4 R3d4 75.Kh3 Rh5) 71.Kf5 (71.Kg4 Rf2 72.Kg5 Rg3 73.Kh4 Rg1 74.Kh3 Rf5 75.Kh4 Rf7 76.Kh5 Rh7) 71...Rd8 (71...Rf3 72.Kg4 Ke3 73.Kg5 Rg2 74.Kh4 Kf4 75.Kh5 Rh3) 72.Kf6 Rf8 73.Kg7 Rf1 74.Kg6 (74.Kh6 Rg1 75.Kh5 Rh2) 74...Rg2 75.Kh5 Rh1 0–1. sirgeshdb – redihokuto, lichess.org, 2020.

6.d4 Bd6 7.de5+/– fe5 8.Be5 Be5 9.Ne5 Qf6 (9...Nf6 10.c4+/–) 10.Qd4 Ne7 11.Nc3 (11.Nd7 Qd4 12.ed4 Nd7+/–) 11...0-0 (11...Nf5 12.Nd7 Qd4 13.ed4 Kd7 14.0-0-0+/–) 12.Nf3+/– Nf5 (12...Qf7!?+/–) 13.Qf6+- Rf6 14.Bd3 (14.bc6 bc6 15.Rb1 Nd6+/–) 14...Ne7 (14...Nd6 15.h3+/–) 15.Rb1 b6 (15...c5 16.Rd1 Kh8 17.e4+-) 16.a4 (16.e4 de4 17.Ne4 Rf4+/–) 16...c5 (16...Bh3 17.Bh7 Kh8 18.Ng5 Bg2 19.Rg1+-) 17.Rd1 c4 (17...Be6+-) 18.Be2 Be6 19.Ng5 (better is 19.e4 Bg4+-) 19...Bf7 (19...a6+-) 20.Nf7 Kf7 (20...Rf7 21.Nd5 Nd5 22.Bc4+- (worse is 22.Rd5 Nd7+-)) 21.Nd5 Nd5 22.Bc4 Nd7 (22...Rd6+-) 23.Bd5 Kg6 (23...Ke7 24.Ba8 Nc5 25.Ke2+-) 24.Ba8 Nc5 25.Ra1 (25.Rd4 Rf8 26.Bc6 Ne6+-) 25...Rf8 (25...Rd6 26.a5+-) 26.Bc6 a6 (26...Rd8 27.a5+-) 27.ba6 Na6 28.Rb1 Rf6 (28...Rb8 29.Bd5+-) 29.Rb6 Nc5 30.a5 Kh6 31.Ke2 Ne6 32.a6 Nd8 33.a7 Rc6 34.Rhb1 Rb6 35.Rb6 1–0. pierre – Dannysgh, ChessHere.com, 2006.

6.d4 e4 7.Nfd2 cb5? 8.Qh5+- Ke7 9.Qd5 f5 10.Bb5 Nf6? (better is 10...Qc7 11.Ba3 Ke8+-) 11.Qb7 (11.Ba3 Ke8 12.Qb7 Bb5 13.Qa8 Qc7+-) 11...Qb6 12.Qa8 Bb5 13.d5 Ba6 (13...Kf7 14.Bf6 Kf6 15.Nc3+-) 14.Bd4 Qb5 (14...Qc7+-) 15.Nc3 Qb2 (15...Qb7 16.Qb7 Bb7+-) 16.Rb1 Qc2 (16...Qa3 17.Qa7 Nbd7 18.Nc4 Qc3 19.Bc3 Bc4 20.Bf6 gf6 21.Rb7 Bd5 22.Rd7 Ke6 23.Rd5+-) 17.Qa7 Nfd7 18.Rb8 Bd3 19.Nb3 Kd6 20.Rd8 (20.Qa3 Kc7 21.d6 Kb8 22.Qa7 Kc8 23.Qc7) 20...Be7 (20...Qc3 21.Bc3 Kd5 22.Qd7 Bd6 23.Qd6 Kc4 24.Qc6) 21.Qd7 1–0. pierre – bosperty, CheeeHere.com, 2005.

6.d4 e4 7.Nfd2 cb5? 8.Qh5+- g6!? 9.Qd5 Bc6 10.Qd8 Kd8+/–.

6.d4 e4!? 7.Nfd2 f5=.

5.Nf3 Bd6

6.a4 Ne7 7.c4 Be6 (7...e4 8.Ng1=+) 8.Qc2 (8.d4 dc4 9.de5 Bb4 10.Nc3 Nd5+=) 8...dc4 (8...Bf5 9.Qb3=) 9.Nc3 (9.Bc4 Bc4 10.Qc4 a6+=) 9...0-0 (9...Nd7!?=+) 10.Ne4 Nd7 11.Nd6 (better is 11.Bc4 Nd5 12.a5+=) 11...cd6–/+ 12.Be2 d5 13.0-0 Qe8 14.e4 d4 (14...Rc8 15.ed5 Nd5 16.Rfe1–/+) 15.d3 (better is 15.Bc4!? Ng6 16.Rfc1=+) 15...c3 16.Ba3 Rf7 17.Nh4 Kh8 18.g3 (18.f4 Rf8=+) 18...Qg8 19.Ng2 Ng6 20.Bd1 Re8 21.Ne1 Nb6 22.a5 Nd7 23.Qa4 Ne7 24.Bb3 Bb3–/+ 25.Qb3 f5 26.ef5 Rf5 27.Nc2?? Qb3 28.Be7 Re7 29.f4 Qc2 30.fe5 Rf1 31.Rf1 h6 32.Rf5 Qd3 33.g4 c2 34.h3 c1Q 35.Kg2 Qcd2 36.Rf2 Qe4 37.Kg3 Qde3 38.Rf3 Q4f3 39.Kh4 Qh3 0–1. OPA – chaser, Live Game Caissa's Web, 2004.

6.c4 dc4 7.Bc4 Qe7 8.0-0 Be6 9.Qb3 Bc4 10.Qc4 Nd7 11.d4 Nb6 12.Qb3 ed4 13.ed4 0-0-0 14.a4 Nd5 15.Qd5?? (better is 15.a5+=) 15...Nh6 (better is 15...Bh2 16.Kh2 Rd5–+) 16.Qb3+- Rhe8 17.Nc3 Bb4 18.Nd5 Rd5 (18...Qe6 19.Qb4 Qd5 20.a5+-) 19.Qd5 1–0. stoker – CapCarnage, Live Game Caissa's Web, 2004.

5.Qh5 g6

6.Qd1 a6 7.a4 (7.d4 ed4 8.ba6 Na6 9.Bd4 Bf5=) 7...ab5 (7...Bd6 8.Nc3 ab5 9.ab5 Ra1 10.Ba1=) 8.ab5 Ra1 9.Ba1 b6 (9...Be6 10.Be2=) 10.c4 (10.d4 e4 11.Nd2=) 10...d4 (10...c6!?=) 11.ed4+/– Bd6 (11...ed4 12.Bd4 Bb5 13.Bb6 Bc4 14.Bc4 cb6 15.Ne2+/–) 12.Nf3 (12.de5 Be5 13.Nc3 Ne7+/–) 12...e4 13.Qe2 h5? (better is 13...Qe7!? 14.Ng1 Bf5+/–) 14.Qe4 (14.Nc3 Rh7 15.d3 e3+-) 14...Qe7 15.Bd3 f5 (15...Bf5 16.Qe7 Ne7 17.Bf5 Nf5 18.d5+-) 16.Qe7 (16.Qe3 Bf4 17.Qe2 Qe2 18.Be2 h4+-) 16...Ne7 17.0-0 (17.c5 Bf4+-) 17...0-0 (17...Rh6 18.Rc1 c6 19.bc6 Nbc6 20.c5+-) 18.Nc3 Kh7 (18...Re8 19.Re1+-) 19.Bb2 (19.Re1 Bc8+-) 19...Kh6 (19...Rd8 20.Re1 Kg8 21.Ne5+-) 20.Re1 (20.Ne5 g5+-) 20...c6 (20...g5 21.Ne5+-) 21.Bc2 (better is 21.c5 bc5 22.Ba3 Nc8 23.dc5 Be7+-) 21...c5? (21...cb5 22.cb5 Re8+-) 22.d3 (better is 22.Na4!? Nc8 23.dc5 bc5+-) 22...cd4 23.Nd4 (23.Na4 Nc8 24.Bd4 Bc7+-) 23...Bc5 (23...Re8 24.h4+-) 24.Nce2 (better is 24.Na4!? Bb4 25.Rb1 Ba5+-) 24...Bb4 (24...Re8 25.h4+-) 25.Ra1 Bd2 (25...g5 26.h4! Ng6 27.hg5 Kg5 28.Nc3 Bc3 29.Bc3+-) 26.Nb3 (26.Ra8 Bb4 27.Bc1 Kg7+-) 26...Bg5 (26...Bb4 27.Bc1 Kh7 28.Bf4+-) 27.g3 (27.Ra8 f4 28.Be5 Nbc6 29.bc6 Ra8 30.cd7 Rd8+-) 27...Be6 (27...Bf6 28.Bf6 Rf6 29.Ra7+-) 28.h4 (28.Ra7 Nc8 29.Rb7 Nd6 30.Rb6 Bc4+-) 28...Bf6 29.Bc1 (better is 29.Bf6!? Rf6 30.Ra7 Nd5+-) 29...Kh7 (29...Kg7 30.Ra7 Rd8 31.Be3+-) 30.Ra7 Nd7 (30...Rd8+-) 31.Nf4 (31.Nf4 Nc8 32.Rb7+-) 1–0. GuestHMFH – GuestQGNV, freechess.org, 2016.

6.Qd1 Bg7 7.Nf3 Ne7 8.c4 dc4 9.Bc4 c6 10.a4 cb5 (10...Nf5 11.Nc3=) 11.ab5+= Bg4 12.Qb3 (12.h3 Qc8 13.Na3 Be6+=) 12...Nd7 13.Ba3 Nb6 (13...e4 14.Nd4 Ne5 15.Nc3+/-) 14.Bf7+= Kf8 15.h3 Bf3 16.gf3 Qc7 (16...f5 17.Nc3+=) 17.Nc3 Rd8? (17...f5 18.Rc1 Qd8 19.Rg1+/-) 18.Rc1 (18.Ne4 Nbc8 19.Nc5+-) 18...Qd7? (better 18...Rd3+/-) 19.Ne4+- f5 (19...Na8 20.Be6 Qe8+-) 20.Ng5 (20.Nd6 e4 21.Be8 Qe8 22.Ne8 Ke8 23.Be7 Ke7 24.fe4 fe4 25.Qb4 Kd7 26.Qe4 Rb8+-) 20...Bf6?? (20...Qd2 21.Kf1 Qd3 22.Kg2 Qb3 23.Bb3 Rd7 24.Ne6 Kf7 25.Nc5 Rd5+-) 21.Ne6+- Kf7 22.Nd8 Kg7? (22...Ke8 23.Nf7 Rf8 24.Nd6 Kd8 25.Qd3+-) 23.Ne6 (better 23.Qf7!? Kh6 24.Qf6 Rd8 25.Qh4 Kg7 26.Qe7 Qe7 27.Be7 Rd5+-) 23...Kh6 24.Rc7 Qd5 Black prepares e4 (24...Qe8 25.e4+-) 25.Qd5 Ned5 26.Rb7 Re8 (26...Nc8 27.Rd7 Nde7 28.Bc5+-) 27.Nf8 (better 27.Bf8 Rf8 28.Nf8+-) 27...Bg7 28.Nd7 e4 (28...Ra8 29.d3+-) 29.Nb6 (better 29.fe4!? fe4 30.Ra7 Nd7 31.Rd7 Nb6+-) 29...ab6 30.fe4 Re4 (30...fe4 31.Rd7 Nf6 32.Rd6+-) 31.d4! Ne3? (31...Bd4 32.Bf8 Deflection) 32.fe3 (better 32.Bc1 f4 33.fe3 Bd4 34.Ke2 Be3 35.Kf3+-) 32...Re3+/- 33.Kd2 (33.Kf2 Ra3 34.Rd1 Rh3 35.Rb6 Kg5+/-) 33...Ra3 34.d5 Bd4 (34...Bc3!? 35.Ke2 Ra2 36.Kd3 Ba5+/-) 35.d6+- Bf6? (35...Ra8 36.Kd3 Bc5 37.d7+-) 36.Rf7 (better 36.Rb6!? Ra7 37.Rc6+-) 36...Bh4 37.Kc2 Ra5 38.Rb1 Ra2 39.Rb2 Ra1 40.d7 (40.Rb3 Ra2 41.Kd3 Bg5+-) 40...Rh1 41.Rb3 Rh2 42.Kd3 Rh1 (42...Rh3 43.Kc4 Rb3 44.Kb3 Bd8+-) 43.Kc4 Rd1 (43...Rc1 44.Kd5+-) 44.Rd3 Rc1 (44...Rb1 45.Rf8+-) 45.Kd5 Rc5 (45...Bg5+-) 46.Ke6 Rb5 (46...Rc7+-) 47.d8Q (better 47.Rf6 Bf6 48.Kf6+-) 47...Bd8 48.Rd8 Rb3 49.Rdd7 Rh3 (49...Kg5 50.Rh7 Rb4+-) 50.Rh7 Kg5 51.Rh3 Kg4 52.Rh6 g5 53.Rg7 f4 54.Rhg6 f3 55.Rg5 Kf4 56.Rf5 Ke3 57.Re7 f2 (57...Ke4+-) 58.Kd6 (58.Kd5 Kd2 59.Rf2 Kc3 60.Re3 Kb4 61.Kc6 Ka5 62.Re4 b5 63.Ra2) 58...Kd2 (58...Kd3 59.Rf3 Kd2 60.Rf2 Kc3 61.Rf3 Kd2 62.Ra7 Ke2 63.Rh3 b5 64.Ra2 Kd1 65.Rh1) 59.Rf2 Kd3 60.Rf4 (60.Rf3 Kc2 61.Re2 Kd1 62.Rb2 Kc1 63.Rg2 b5 64.Rf1) 60...b5 (60...Kd2 61.Kd5 Kc2 62.Re2 Kb3 63.Rf3 Kb4 64.Kc6 Ka5 65.Re4 b5 66.Ra3) 61.Ree4 (61.Rf3 Kd2 62.Rf2 Kd3 63.Kc5 b4 64.Rfe2 b3 65.R7e3) 61...Kc3 (61...b4 62.Rb4 Kd2 63.Rb3 Kc2 64.Rh3 Kd2 65.Rf2 Ke1 66.Rb2 Kd1 67.Rh1) 62.Rb4 (62.Rb4 Kd3 63.Rb3 Ke2 64.Rh4 Kd2 65.Rh2 Kc1 66.Rf3 b4 67.Rf1; 62.Re2 Kd3 63.Rfe4 Kc3 64.Kc5 Kb3 65.R4e3 Ka4 66.Ra2) 1-0. bjoernsen (2285) - RicardoCMa (2200), Rated Blitz game, lichess.org, 2016.

6.Qh4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Be7 10.c4 Be6 11.Nc3 d4 12.ed4 ed4 13.Ne4 Bf5?? 14.Bd3 Nd7 15.Nf3 Nc5? 16.Nc5+- Bc5 17.Bf5 Qe7?? 18.Be4 f5 19.Qe7 Ne7 20.Bb7 0-0 21.0-0 Rb8 22.Ba6 c6 23.Nd4 cb5 24.Bb5 Bd4 25.Bd4 Rd8 26.Bc3 Kf7 27.Re1 g5 28.d4 h5 29.Bb4 Ng6 30.d5 Nf4 31.Re7 Kf6 32.d6 Nd3 33.Ba3 Ne5 34.c5 g4 35.c6 Nc6 36.Bc6 Ra8 37.Re3 Rc8 38.Rc3 Ke6 39.d7 Rd8 40.h3 1–0. elsh1403 – cigu, internet, 2011.

6.Qh4 Bb5?? 7.Bb5+- c6 8.Bd3 Nd7? 9.Bg6! Ke7 10.Bf5 Nb6 11.Ba3 Ke8 12.Qh5 1–0. elsh1403 – kijano19, internet, 2011.

6.Qh4 Bd6 7.Nf3 c6 8.a4 cb5 9.ab5 Be6 10.Be2 h6 11.0-0 Nd7 12.c4 Qc7?? 13.Rc1 Qd8 14.cd5 Bd5 15.Bd3 Nc5? 16.Bg6+- Bf7 17.Qh5 Qe7 18.Nh4 Ne4?? 19.Nf5 Qe6 20.Ng7 Kd8 21.Ne6 Be6 22.Be4 Rb8 23.Nc3 Ne7 24.Ra7 f5 25.Bb7 1–0. elsh1403 – finladia1000ml, internet, 2011.

6.Qh4 Qe7 7.Nf3 Nh6 8.Be2 Nf5 9.Qa4 a6 10.c4 c6 11.Nc3 dc4 12.Bc4 cb5 13.Nb5 Bb5 14.Bb5= Kf7 15.Qb3 Kg7 16.Bd3 e4 17.Be4?? Qe4=+ 18.Ng5? Nd6?? 19.Ne4+- Ne4 20.Qb7 (20.Qb7 Nd7 21.Qd7 Kh6 22.Qg4+-) 1–0. elsh1403 – aoniceseidan (1630), internet, 2011.

6.Qh4 Be7 7.Bd3 e4 8.Be2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.c4 cb5 13.cd5 Bf5 14.g4 Bd7 15.g5 Kf7 16.Qe4 Na6?? 17.Nc3 Nc7 18.Nf3 Bd6 19.Nd4 f5 20.Qb1 Qg5? 21.Ncb5 Nb5 22.Nb5 Bb5 23.Qb5 Nf6 24.Qb7 Kg8 25.Qc8 Bf8 26.Qe6 Kg7 27.Bb5 f4+- 28.d6 Qf5 29.Bf6 Qf6 30.Qf6 Kf6 31.d7 Be7 32.0-0 fe3 33.fe3 Ke6 34.d4 Rd8 35.e4 g5 36.d5 Kd6 37.Rf7 h5 38.Rf5 h4 39.Bc6 g4 40.e5 Kc7 41.Rf7 Bc5 42.Kf1 g3 43.hg3 hg3 44.Kg2 Rg8 45.e6 Bf2 46.e7 Rh8 47.e8Q Rh2 48.Kf3 g2 49.d8Q 1–0. elsh1403 – asek100 (1610), internet, 2011.

6.Qh4 Be7 7.Nf3 c6 8.c4 dc4 9.Bc4 cb5 10.Bg8 Rg8 11.Qh7 Be6 12.0-0 Nc6 13.Nc3 Qd7 14.Nb5 0-0-0 15.Rac1 a6? 16.Na7+- Kb8 17.Nc6 bc6 18.Ne5?? fe5= 19.Be5 Ka7 20.Bd4 c5 21.Bc5 Bc5 22.Qd7 Rd7 23.Rc5 Ba2 24.Rfc1? Rgd8 25.d4= Bb3 26.Rb1 Ba4 27.Rbc1 Bb5 28.Rc7 Rc7 29.Rc7 Kb6 30.Rg7 Bd3 31.f3 Re8 32.Kf2 a5 33.e4+/– a4 34.Rg6 Kb5 35.Ke3 Bc4 36.Rg5 Kb4 37.Kd2 a3–/+ 38.Kc2?? a2–+ 39.Kb2 Ra8 40.Rg7?? a1Q 41.Kc2 Qc3 (41...Qc3 42.Kd1 Ra1; 41...Ra2) 0–1. elsh1403 – wojtek11091, internet, 2011.

6.Qh4 Be7 7.f4 ef4 8.Qf4 Bf5 9.Nf3 Bc2 10.Nd4 Bb1 11.Rb1 Qd6 12.Qf3 Nd7 13.Be2 Ne5 14.Qh3 Qd7 15.Ne6 Bd6 16.0-0 f5 17.Ng5 h6 18.Rbc1 Nf7?? 19.Nf7+- Rh7 20.Ne5 Be5 21.Be5 0-0-0 22.Rc7 Qc7 23.Bc7 Kc7 24.Rc1 Kb8 25.Qg3 Ka8 26.Rc7 Rc7 27.Qc7 Rb8 28.Bf3 Nf6 29.b6 a6 30.Be2 Ne4 31.Ba6! Nd2 32.Bd3 Ne4 33.Qc2 Re8 34.Be4 (34.Be4 Rd8 35.Qa4 Kb8 36.Bd5 Rh8 37.Qd7 Rd8 38.Qd8; 34.Qa4 Kb8 35.Qe8) 1–0. elsh1403 – coeee, internet, 2011.

6.Qh4 Kf7 7.c4 c6 8.f4 ef4 9.Qf4 Be6 10.Nf3 Kg7 11.Ng5 Bf5?? 12.Nf3 Bd6 13.Qd4 Nd7 14.cd5 c5 15.Qc3 b6 16.Bd3 Bg4 17.0-0 Bf3 18.Rf3 Be5=+ 19.Qc2 Bb2 20.Qb2 Ne5 21.Be4 Nf3 22.gf3 Qd6 23.Nc3 Ne7 24.Ne2 Kf7 25.Nf4 g5 26.Nh5 Rag8 27.Rf1 f5 28.Bd3 Kg6 29.Ng3 Qd5 30.Qc2? Rd8–+ 31.Bc4 Qd2 32.Qd2 Rd2 33.e4 f4 34.Ne2 Rhd8 35.Nc3 Kf6 36.Nd5 Nd5 37.Bd5 Ke5 38.Rf2 Rf2 39.Kf2 Rd5 40.ed5 Kd5 41.Ke2 Kc4 42.Kd2 Kb5 43.Kd3 Kc6 44.Ke4 c4 45.Kd4 b5 46.a3 a6 47.Kc3 h6 48.Kd4 Kd6 49.Kc3 Kc5 50.h3 Kd5 51.Kb4 Kd4 52.Ka5 c3 53.Ka6 c2 54.Kb5 c1Q 55.a4 Qc5 (55...Qc5 56.Ka6 Kd5 57.Kb7 Qc6 58.Kb8 Qb6 59.Kc8 Kd6 60.a5 Qc7; 55...Qc7 56.Ka6 Kc5 57.a5 Kc6 58.h4 Qb7) 0–1. elsh1403 – uplc (1735), internet, 2011.

6.Qh4 Bg7 7.Nf3 Ne7 8.Be2 0-0 9.0-0 c6 10.Qa4 cb5 11.Bb5 Nbc6 12.c4 a6 13.Bc6 Bc6 14.Qb3 dc4 15.Qc4 Kh8 16.Nc3 Rc8 17.Qe2 Nd5 18.Nd5 Qd5 19.Rfc1 g5 20.d3 g4 21.e4? gf3–+ 22.Qf3 Qe6 23.d4 ed4 24.Bd4 Be4 25.Qe3 Bd5 26.Qg3 Qe4 27.Be3 f5 28.Rc8 Rc8 29.h3 Ba1 30.Bh6 Be5 31.Qg5 Rg8 (31...Rg8 32.Bg7 Rg7 33.Qd8 Rg8 34.Qf6 Bf6 35.f3 Qf3 36.g3 Qg2; 31...Qe1) 0–1. elsh1403 – niluk, internet, 2011.

6.Qh4 h5 7.Nf3? g5 8.Qa4= a6 9.c4 dc4 10.Bc4 Bc5? 11.0-0 Ra7? 12.Qb3 Nh6+/– 13.d4 ed4 14.ed4 Bd6 15.Re1 Kf8 16.Nc3 ab5 17.Nb5 Bb5 18.Bb5 c6 19.Bd3 Kg7? 20.d5 cd5 21.Ng5 Re8 22.Ne6 Re6 23.Re6 Be7 24.Rae1 Nc6 25.R1e3 h4 26.Qc3 d4 27.Re7! Ne7 28.Qd4 Qd4 29.Bd4 b6 30.Rf3 Nhg8 31.Bc4 Ra4 32.Bg8 Ng8 33.Bb6 Ra2 34.h3 Kg6 35.Kh2 f5 36.g3 Rb2 37.Be3 Nf6 38.gh4 Ne4 39.Kg2 Rb5 40.Rf4 Kh5 41.Kf3 Nd6 42.Kg3 Rb7 43.Rd4+- Rg7 44.Bg5 Rg6? 45.f4 Ne4 46.Kf3 Ng5 47.hg5 Kh4 48.Kg2 Ra6 49.Rd2 Ra4 50.Rf2 Ra3 51.g6?? Ra7 (51...Ra7 52.Kh2 Rg7+-) 1–0. elsh1403 – surffailija (1755), internet, 2011.

4.e3 Nd7

5.a4 c5 6.c4 d4 7.ed4 (7.Bd3 Nh6=) 7...ed4 8.d3 (8.Qe2 Be7=) 8...Ne5 9.Nf3 (9.Be2 Qe7=+) 9...Bd6 (9...Qa5 10.Nfd2–/+) 10.Be2=+ Ne7 11.0-0 0-0 12.Nbd2 N5g6 (12...Bf5 13.Ne5 Be5 14.a5=+) 13.Re1 b6 14.Ne4 Bb7 15.Nd6 Qd6 16.Nd2 Rad8 (16...a6 17.Bf3 Bf3 18.Qf3=) 17.Bf3 Bc8 (17...Bf3 18.Qf3 Rfe8 19.a5+=) 18.g3 (18.Ne4 Qc7+=) 18...Nf5 (18...Ne5 19.Ne4 Nf3 20.Qf3=) 19.Bd5+= Kh8 20.Ne4 (20.a5 Rde8+=) 20...Qc7= 21.Bc1 (better 21.Nd2!?=) 21...Nfe7–/+ 22.Ba8 Bh3 23.Bd5 Nd5 24.cd5 Rd5 25.Qf3? (25.a5!?–/+) 25...Rf5 (25...Ne5!? 26.Qh1 Nd3 27.Rd1–+) 26.Qe2 (26.Bf4 Qd7 (26...Rf4?! 27.gf4 Nf4 28.Qg3–/+; worse 26...Nf4 27.gf4 Qf4 28.Qh3+-) 27.Kh1 Ne5–+ (27...Nf4?! 28.gf4 Rd5 29.a5–+)) 26...Re8 (26...Ne5!? 27.Nd2 Qb7 28.Qe4 Qe4 29.de4–+) 27.f4 h5 (better 27...Rd5 28.Bd2 Qd7–+) 28.Qf3? (28.Qd2 Qd7–/+) 28...Bg4?? (better 28...Ne5 29.Qd1 Bg4–+) 29.Qg2–/+ Rf4?? (better 29...Rd5–/+) 30.Bf4+- (30.gf4 Nh4 31.Qg3 Nf3 32.Kf1 Ne1 33.Ke1 Qe7=+) 30...Nf4 31.gf4 Qf4 32.Rf1 (better 32.Nf2 Re3 33.Ng4 hg4 34.Rf1+-) 32...Qe3+= 33.Nf2 (better 33.Rf2!?+=) 33...Bf3=+ 34.Qg3 Re5 35.h4 Qh6?? (better 35...Be2!? 36.Qg2 Bf1 37.Rf1 Qf4=+) 36.Rae1 (better 36.Qf3 Qe3 37.Qg2+-) 36...Be2+- 37.Nh3 (37.Ne4 Bf1 38.Ng5 Rg5 39.hg5 fg5 40.Rf1 Qg6+-) 37...Bf1 (better 37...Qe3 38.Qe3 Re3+- (38...de3?? 39.Re2 c4 40.dc4+-)) 38.Re5?? (38.Ng5! Rg5 39.hg5 fg5 40.Kf1+-) 38...fe5 (better 38...Bh3!? 39.Re7 Bg4 40.Ra7 Qc1 41.Kg2 Qd2 42.Kg1 Qd1 43.Kh2 Kh7–/+) 39.Kf1+= Qf6 (39...Qc1 40.Qe1 Qe1 41.Ke1+-) 40.Nf2 (40.Ke2 Qe7+-) 40...g6 41.Qg5 (41.Kg2!?+=) 41...Qg5 42.hg5 Kg7 43.Ne4 Kf7 (43...c4 44.dc4 h4+-) 44.Kf2?? (better 44.Nc5 h4 45.a5 ba5 46.Kg2+-) 44...Ke6= 45.Kf3 Kf5 (better 45...h4=) 46.Nd2?? (46.Nc5 bc5 47.a5+-) 46...Kg5–/+ 47.Nc4 Kf5 48.Nd6 (48.Nb6 g5 49.Nc4 e4 50.de4 Ke6 51.a5+-) 48...Kf6 49.Ne4 Kf5 (49...Ke6 50.Kg3–/+) 50.Ng3 (50.Nd6 Ke6 51.Ne4 g5 52.Ng5 Kd5–+) 50...Kg5 (50...Ke6 51.Ne4 c4 52.dc4 h4=) 51.Ne2?? (51.Ne4 Kf5 52.Nd6 Ke6 53.Nc8–+) 51...Kh4 (better 51...h4 52.Ng1 Kf5–+) 52.Ke4?? (52.Ng3 g5 53.Ne4 g4 54.Kg2 c4 55.dc4 g3+-) 52...g5 (better 52...Kg4 53.Ng1 h4–+) 53.Nf4?? (53.Kf5 e4! 54.Ke4 Kg4–+) 53...g4 (better 53...ef4 54.a5 ba5–+) 54.Ng6? (54.Ke5 g3 55.Kf5 c4 56.dc4 d3 57.Nd3 g2+-) 54...Kg5 (54...Kg3 55.Ne5 Kf2 56.Ng6–+) 55.Ne5 h4 56.Nf7 Kh5 57.Nd6 g3?? (57...h3 58.Nf5 h2–+) 58.Nf5?? (58.Kf3 Kh6 59.Nc4+=) 58...Kg4 (58...g2!? 59.a5–+) 59.Ng3 (59.Nh6 Kh3 60.Kf3–+) 59...Kh3 (better 59...hg3 60.Kd5 g2–+) 60.Ne2 Kg2 61.Nf4 Kg1 (better 61...Kg3!? 62.Nh5 Kf2=+) 62.Nh5?? (62.Nh5 h3 63.Kf3–+; better 62.Kf3+-) 1–0. BeepBeepImAJeep (2625) – boutique (2185), lichess.org, 2017.

5.Nc3 Nb6 6.a4 d4 7.ed4 Qd4 8.Nf3 Qd7 9.Be2 Qf7 10.d4 ed4 11.Qd4 Be6 12.a5 Nc4 13.a6 c5 14.Qe4 Nb2 +-.

5.c4 c6 6.bc6 (6.d4 Ne7=) 6...bc6 7.Ba3 (7.d4 Ne7=) 7...Ba3=+ 8.Na3 Qa5 (8...Ne7 9.cd5 cd5 10.Qh5 g6 11.Qf3=+) 9.Nc2 (9.Qc1 Ba6=+) 9...Ba6 (10.Qg4 g6 11.cd5 f5+=; better is 9...Ne7!?=+). abt – NathanB, Live Game Caissa's Web, 2004.

5.d4 Bb4 6.Bc3 Bc3 7.Nc3=.

5.d4 Bd6 6.de5 (6.c4 dc4 7.Bc4 ed4 8.Bg8 Rg8 9.Qh5 Ke7 10.Bd4 a6=) 6...Be5 (6...Ne5 7.Nf3 Bg4 8.Be2=) 7.Be5 (7.Nc3 Ne7=) 7...Ne5 8.Be2 (8.Nf3 Ne7=) 8...Ne7 9.Nf3 0-0 10.0-0 Bd7 (10...a6 11.ba6 b6 12.Nd4=) 11.a4 c6 (11...Bg4 12.Nc3=) 12.Ne5 (12.Nbd2 Qc7=) 12...fe5+= 13.c4 c5 (13...Rc8 14.Nd2=) 14.Qb3 (better is 14.cd5!? Nf5 15.Nd2+/–) 14...d4= 15.ed4 (15.Bf3 Qc7+=) 15...ed4 (15...cd4 16.c5 Kh8 17.Nd2=) 16.Bf3 Rb8 17.Nd2 (17.Re1 Bf5=) 17...b6 (17...Qc7 18.Rfe1 Bf5 19.a5=) 18.Ne4 (18.Rae1 Bf5=) 18...Bf5 (18...Ng6 19.Rae1=) 19.Ng5 (19.a5 Qc7=) 19...Qd7 (19...Re8 20.Rfe1=) 20.Rfe1 (20.a5 Qc7 21.ab6 ab6= (worse is 21...Qb6 22.Rfe1 Rbe8 23.Qa3+/–)) 20...Rbe8 21.Bh5 (21.a5 Qc7=) 21...Bg6 (21...Rd8 22.a5=) 22.Bg6 (22.Bf3 Qf5 23.Ne6 Rf7=) 22...Ng6+= (22...hg6? 23.Qg3 Rf5 24.Qh4+-) 23.g3 (23.Ne4 Qf7 24.Qc2 Nf4–/+) 23...Ne5 (23...Qg4 24.Re8 Re8 25.Nf3–/+) 24.Qb1? (better is 24.f4 Nf7 25.Nf7 Rf7 26.a5+=) 24...d3–+ 25.Re3 (better is 25.Qb2 Qf5 26.f4 Nc4 27.Qb3–+) 25...Qf5?? (25...h6 26.Qb2 Qd4 (26...hg5?! 27.Re5 Qf7 28.Re8 Re8 29.Qc3+=; 26...Nc4?! 27.Qb3 Qd4 28.Rd1 Re3 29.fe3 Qe3 30.Kh1–+) 27.Qd4 cd4 28.Re5 A) 28...hg5?! 29.Rd5= (worse is 29.Rg5 Re2 30.f4 Rc8–/+); B) 28...Re5–+) 26.h4?? (better is 26.f4+=) 26...Qf2–+ 27.Kh1 Qe3 (27...Qe3 28.Qg1 Qg1 29.Rg1 Nc4–+) 0–1. mic (2110) – johnb (2200), net–chess.com, 2008.

5.d4 Ne7 6.c4 c6 7.Nc3 Qa5 8.Nf3 cb5 9.cb5 Ng6 10.de5 Ba3 11.Qa4 Qa4 12.Na4 Bb2 13.Nb2 fe5 14.Be2 a6 =.

5.Be2 Bd6 6.Nf3 Ne7 7.0-0 0-0 8.c4 c6 9.Ba3 Ba3 10.Na3 Qa5 11.Qc1 Nb6 12.cd5 cd5 13.d4 Bg4 14.Bd1 Rac8 =+.

5.Nf3 Ne7 6.d4 e4 7.Nfd2 Ng6 8.c4 Bb4 9.Qb3 Bd2 10.Nd2 dc4? 11.Bc4+- Nb6 12.Bf7 Kd7?? 13.Qe6 1–0. guest2247 – guest573, ICC, 2005.

5.Nf3 Nh6 6.a4 Be7 7.Na3 0-0 8.c4 Nb6 9.cd5 Nd5 10.Bc4 Kh8 11.Qb3 Nb6 12.Be2 Nd5 13.a5 Be6 14.Bc4 Qd7 15.0-0 Rad8 16.d4 e4 17.Nd2 f5 18.f3 ef3 19.Nf3 Ng4 20.Rae1 c6 21.h3 Ngf6 22.Ne5 Qc8 23.bc6 bc6 24.Nc2 Qc7 25.Qa2 Rb8 26.Ba3 Qa5?? 27.Ra1?? Ba3=+ 28.Qa3 Qa3 29.Ra3 Rb2 30.Ne1 Rb7 31.Nc6 Rc8?? 32.Bd5?? Nd5= 33.Ne5 g6 34.N1f3 Rcb8 35.Ng5 Bg8 36.Nc6 Rc8 37.Ne5 Kg7 38.Rfa1 h6 39.Ngf3 Rcc7 40.Nd3 Ne3 41.Nc5 Rb6?? 42.Ra7 Rbc6? 43.Rc7?? Rc7= 44.Kf2 Nd5 45.Ra6 Nf6 46.Ne5 Bf7 47.Rd6 Ra7 48.Ned7 Nd7 49.Rd7 Rd7 50.Nd7 Bd5 51.Ne5 g5 52.g4 Kf6 53.Kg3 f4–/+ 54.Kf2 Be4 55.Nd7 Ke6 56.Ne5 Bd5 57.Ng6 Kf6 58.Nf8?? Kf7 59.Nd7=+ Ke7 60.Ne5 Kf6 61.Ke2 Ke6 62.Nf3 (62.Nf3 Bf3 63.Kf3–+). poganinbezdom (1650) – kubajakub11 (1745), internet, 2011.

5.Qh5 g6 6.Qh4 Bg7 7.f4 ef4 8.Qf4 Ne5 9.Nf3 Nf3 10.Qf3 c6 11.c4 Be6 12.Be2 Qb6 13.0-0 0-0-0 14.a4 dc4 15.Na3 cb5 16.Nb5 Rd2 17.Rac1 Rb2 18.Bc4 Bc4?? 19.Rc4 Kb8 20.Qf4 Ka8 21.Rc8 1–0. elsh1403 – piki127 (1640), internet, 2011.

5.c4 dc4

6.Qb3 dc4 7.Bc4 Nc4 8.Qc4+=.

6.Qb3 Be6 7.d3 (7.cd5 Bd5 8.Qc2 Bd6=) 7...d4 (7...Bd6!?–/+) 8.ed4= Nh6 (better is 8...ed4 9.Be2 a5=) 9.de5+/– Bc5 (9...fe5 10.Nf3+/–) 10.Nd2 (10.ef6 gf6 11.Nf3 Qe7+/–) 10...Ng4 (10...fe5 11.Ne4 (11.Be5?! Ng4 12.Ne4 Bf2 13.Nf2 Ne5=) 11...Nd7 12.Nf3+/–) 11.Ne4 a5?? (better is 11...Bd4 12.ef6 Nf6 13.Bd4 Qd4+/–) 12.Nc5+- Qe7 13.Bd4 (better is 13.Nb7 Ne5 14.Be2+-) 13...fe5+/– 14.Ne6 Qe6?? (14...ed4 15.c5 a4+-) 15.Bb2 (better is 15.Bc5+-) 15...Nf2 (15...0-0 16.Nf3 a4+-) 16.Kf2 0-0 17.Nf3 Nd7 (17...a4 18.Qa3+-) 18.Be2 (18.Re1 a4 19.Qa3 c6+-) 18...Nc5 (18...e4 19.de4 Nc5 20.Qe3 Ne4 21.Kg1+-) 19.Qc3 b6 (19...Qb6 20.Ke1+-) 20.Qe5 Rf7 (20...Qf7 21.Rhf1+-) 21.Rhf1 (21.d4 Re8 22.Qe6 Ne6+-) 21...Re8 (21...Qd7 22.Qd4+-) 22.Qe6 Ne6 (22...Re6 23.d4 Na4 24.Ba3+-) 23.Kg1 (23.Rae1 Nf4 24.d4 g5+-) 23...Nc5 (23...Nf4 24.Bd1 Nd3 25.Bc3+-) 24.Rae1 (24.Ne5 Rf6 25.Bf3 Ne6+-) 24...h6 (24...Na4 25.Bd4+-) 25.d4 Nd7 26.Bd3 Rd8 (26...Rfe7 27.Ne5 Ne5 28.de5+-) 27.d5 (27.Be4 Rff8+-) 27...Nc5 28.Bc2 (28.Bg6 Rff8+-) 28...Nb7 (28...Rff8 29.Nd4 Rf1 30.Kf1 Rf8 31.Kg1+-) 29.Nd4 (29.Bg6 Rfd7 30.Bf5 Nc5+-) 29...Nd6 (29...Rf1 30.Rf1 Nd6 31.Ne6+-) 30.Bd3 (30.Ne6 Rf1 31.Rf1 Rc8 32.Bg7 Nc4 33.Bh6 a4+-) 30...Rf1 (30...Rdd7 31.Ne6 g5 32.Be5+-) 31.Rf1 Nf7 (31...a4 32.Ne6 Rc8 33.Bg7+-) 32.Ne6 (32.Ne6 Rc8 33.Bg7+-) 1–0. Hasler,Ulrich – Bauer,HJ, corr ICCF 2–GT, 1993.

6.cd5 Nd5 7.d4 Bb4 8.Nd2 Bc3 9.Bc3 Nc3=.

6.cd5 Nd5 7.Qh5 g6+= 8.Qd1 Bd7 (8...Be6 9.a3+=) 9.Bc4 (9.e4 Nf4=) 9...Nge7 (9...Nb6 10.Be2=) 10.Nf3 (10.Qb3 Bf5+=) 10...Nb6 11.Qb3 (11.Be2!?=) 11...Nc4+= 12.Qc4 Nd5?? (12...c6 13.d4 cb5 14.Qb3 ed4 15.0-0+=) 13.0-0?? (better is 13.Qd5 c6 14.Qb3+-) 13...Nb6 14.Qb3 Qe7 15.a4 (15.d4 e4 16.Nfd2 Bg7+=) 15...0-0-0 (15...Qe6 16.Qc2 c6 17.Nc3=) 16.Ba3 Qe8 (16...Qe6 17.Qc2=) 17.Nc3 (17.Rc1 Bg4+=) 17...Ba3 18.Ra3 (18.Qa3 Bg4 19.a5 Nd5+=) 18...c6 (18...Be6!? 19.Qc2 Bc4=) 19.a5 Na8 (19...Be6 20.Qb4 Nc4 21.bc6 Qc6+/–) 20.Rc1+/– Nc7 (20...Be6 21.Qb1 Qe7 22.bc6 bc6 23.Nb5+-) 21.b6+- ab6 22.ab6 (22.Qb6 Bg4 23.Rb3 Bf3 24.gf3 Rd6+-) 22...Na6 23.Ra6 ba6 24.b7 Kc7 25.Nd5 Kb8?? (25...Kd6 26.Nf6 Qe6 27.Ne4 Kc7+-) 26.Qb6 (26.Nf6?! Qe7 27.Ne4 c5+-) 26...cd5 27.Qa6 (27.Qc7 Ka7 28.b8Q) 27...Bc6+- 28.Rc6 Rc8 (28...Qc6 29.Qc6 Rhf8+-) 29.Qa8 1–0. GuestMKNW – GuestWVNT, freechess.org, 2017.

5.c4 dc4

6.Bc4 Nb6 7.Be2 Nd5 8.Nc3 Bf5 9.Nf3 Nb4 10.e4 Bg4 11.0-0 Bf3 12.Bf3 Nd3 13.Rb1 Bc5 14.Qc2 Ne7+=.

6.Bc4 Nb6 7.Be2 Be6 8.Nf3 Qd7 (8...a6 9.ba6 ba6 10.Nc3=) 9.Qc2 Bd6 (9...c5 10.bc6 Qc6 11.Qc6 bc6 12.d4 Bb4 13.Nfd2 ed4 14.Bd4=) 10.d4+= ed4 11.Nd4 Bf7 12.Qe4 Ne7 13.Nc3 (13.Qb7?! Bd5 14.Qa6 Bg2+=) 13...0-0-0? (better is 13...Qc8+/–) 14.Bg4+- f5 15.Nf5 (15.Bf5?! Nf5 16.Qf5 Bg6 17.Qd7 Rd7+=) 15...Kb8 16.Ng7 (16.Ng7 Bg6 17.Bd7 Be4 18.Ne4 Rd7 19.Ne6+-; 16.Nd6?! Qd6 17.Rd1 Qc5+/–) 1–0. pierre – fsakvador, ChessHere.com, 2005.

5.c4 Ne7

6.d4 c6 7.cd5 Nd5 8.de5 fe5 9.Nd2=.

6.cd5 Nd5 7.Bc4 c6 (7...N7b6 8.Be2=+) 8.a4 (8.d4 Bb4 9.Nd2 N7b6=+) 8...Nc5 (8...N7b6 9.Be2=+) 9.d4= ed4 10.ed4 (10.Bd4 Bf5=) 10...Qe7 (10...Ne4 11.Nf3 Bb4 12.Nfd2 Nd2 13.Nd2=+) 11.Ne2= Ne4 (11...Nb6 12.Nd2 Nc4 13.Nc4=) 12.0-0+= Be6 13.Bd3 (13.Bd5 cd5 14.Nf4 Kd8+-) 13...f5 14.Nbc3 Ndc3 (14...Qh4 15.bc6 bc6 16.Nd5 Bd5 17.f3+=) 15.Nc3+- (15.Bc3?! Qh4+=) 15...Nc3 16.Bc3 0-0-0? (better 16...Qd7!?+-) 17.bc6+- bc6 18.Rb1 Kc7 (18...Qd6+-) 19.Ba5 Kd7 (19...Kc8 20.Ba6 Kd7 21.Re1+-) 20.Rb7 (20.Rb7 Ke8 21.Re7 Be7 22.Bd8 Kd8 23.Re1+-) 1–0. DEFFM – GuestDHKK, freechess.org, 2020.

6.cd5 Nd5 7.d4 Bb4 8.Nd2 Qe7=.

6.cd5 Nd5 7.Be2 Bd6+= 8.Bh5 (8.d4 a6+=) 8...g6 9.Bf3 Ne7 (9...N7b6 10.d4+=) 10.Qc2 (10.Ne2 a6=) 10...0-0 (10...Nf5 11.Nc3=) 11.Ne2 Nc5 (11...a6 12.Nbc3=) 12.Ng3 (12.d4 Ne6=) 12...f5 (12...a6 13.ba6 Ra6 14.d4=) 13.Be2 (13.d4 ed4 14.Bd4 Ne6=) 13...Be6 (13...Nd5 14.0-0=) 14.Bc4 (14.d4 Nd7=) 14...Bc4 (14...Nd5 15.d4 ed4 16.Bd4=) 15.Qc4 Rf7 16.0-0 (16.d4 Nd7 17.0-0=) 16...b6 (16...a6!? 17.ba6 b5=) 17.d4+= Ne4?? (better is 17...Nd7+=) 18.Ne4+- fe4 19.de5 Bc5 (19...Be5 20.Be5 Qd3 21.Qa4+-) 20.Qe4 (better is 20.e6!? Rg7 21.Bg7 Kg7+-) 20...Qd5 (20...a6 21.e6 Rf5 22.g4+-) 21.Qc2 (21.Nc3!? Qd8+-) 21...Rd8 (21...c6 22.Nc3 Qe6 23.Qb3 Qb3 24.ab3 cb5 25.Nb5+-) 22.Nc3 Qd3? (22...Qe5 23.Ne4 Qf5 24.Qc3+-) 23.Qb3 (23.Qd3!? Rd3 24.Rad1 Rd1 25.Rd1 Rf8+-) 23...Qf5 24.Ne2 Rd2 (24...Rd3 25.Qc4 Rd2 26.Qc3+-) 25.Nf4 (25.e6 Rf8 26.Qc3 Rb2 27.Qb2 c6+-) 25...g5 26.Nh5 (better is 26.Bc3 Rf2 27.Kf2 (27.Rf2?! Be3 28.Raf1 Qf4+/–) 27...gf4 28.Kg1+-) 26...g4? (26...Nd5 27.e6! Rf8+-) 27.Nf6 (27.e6!? Rf8 28.Qc3 Bd4 29.ed4 Rb2 30.Qb2 Qh5+-) 27...Kf8 28.e4 (28.Rad1 Rd1 29.Rd1 g3 30.hg3 h5+-) 28...Qf4 29.Nd7! Ke8 (29...Rd7 30.e6 Double attack (30.e6 Decoy; 30.e6 Passed pawn)) 30.Nc5 bc5 (30...Rf2 31.Qf7! Qf7 32.Rf2+-) 31.Bc1 c4 (31...c6 32.bc6 Nc6 33.Qe6 Ne7 34.g3+-) 32.Qc4 1–0. GuestHCWQ – GuestPWWL, freechess.org, 2016.

5.Nf3 Nb6

6.a4 Bd6 7.Be2 Ne7 8.0-0 h5 9.d3 g5 10.Nfd2 Be6 11.Bh5 Kd7 12.a5 Nbc8 13.c4 c6 14.Bf3 (better is 14.e4!?+/–) 14...e4= 15.bc6 bc6 16.cd5 (16.de4? Bh2 17.Kh1 Be5 18.Kg1 Bb2–+) 16...Bh2 17.Kh1 Be5 18.Bh5? (18.Kg1 Nd5 19.Be5 ef3 20.Nf3–+) 18...Bf7–+ (18...Bb2 19.de6 Ke6 20.Ra2=) 19.Be5 fe5 (19...Bh5 20.Qe1 fe5–+) 20.dc6–/+ Nc6 21.g4 ed3 22.Ne4 Kc7 23.Nbc3 Rb8 24.Kg2 Bh5 25.gh5 N8e7 26.Nc5 Kc8?? (better is 26...Qc8+/–) 27.Qg4+- (27…Kc7 28.Ne6 Kb7 29.Nd8 Rhd8 30.Rfb1 Ka8 31.Rb8 Kb8 32.Rb1 Ka8 33.h6+-) 1–0. hal1958 – REIS, playchess.de, 2003.

6.Be2 Bd6 7.0-0 Ne7 8.a4 c6 9.d3 Qc7 10.a5 Nd7 11.Nc3 Bb4 12.bc6 bc6 13.Qd2 Rb8 14.Rfb1 c5 =+.

4.e3 e4

5.c4 b6? 6.cd5 (6.Qh5 g6 7.Qd5 Qd5 8.cd5 Bf5+/–) 6...Qd5 7.Nc3 Qe5 8.Qc2 (8.Bc4+/–) 8...Ne7 (8...Bb7 9.Nge2+=) 9.f4 (9.Ne4!? Qe6 10.Bc4+-) 9...Qc5 (9...ef3 10.Nf3 Qh5 11.Ne4+/–) 10.Qe4 (10.Qe4 c6 11.Rc1+/–) 1–0. GuestFKKV – GuestTMYK, freechess.org, 2017.

5.c4 c6 6.bc6 bc6 (6...Nc6 7.Nc3 Be6 8.Qb3+=) 7.cd5 (7.Nc3 f5+=) 7...cd5 8.Qh5 (8.Nc3 Bb7=) 8...g6= 9.Qd1 f5?? (better is 9...Nc6=) 10.Bh8+- Nf6 11.Ne2 (11.Nc3 Nbd7+-) 11...Ba6 (11...Nbd7 12.Nbc3+-) 12.Qa4 (12.Nbc3 Be7+-) 12...Kf7 (12...Qd7 13.Qd4 Bg7 14.Bg7 Qg7 15.Nbc3+-) 13.Nbc3 (13.Bf6 Qf6 14.Nbc3 Qc6+-) 13...Bh6 (13...Qd7 14.Qd1+-) 14.Bf6 Kf6 15.Rb1 Bd3 (15...Bc4 16.Rb7 Qg8 17.Nd4+-) 16.Nf4 (better is 16.Rb7 g5+-) 16...Bf4 17.ef4 (17.Bd3!? Be5+-) 17...Bb1 (17...d4 18.Rb7 dc3 19.Qb3 cd2 20.Kd1+-) 18.Qd4 (worse is 18.Nb1 d4+-) 18...Ke6 19.Bc4 (19.Nb1?! Nc6 20.Qa4 Ne7+-) 19...Nc6 20.Bd5 Kd7 (20...Kd6 21.Qc4 Qb6 22.Bc6 Qc6 23.Qb4 Ke6 24.Qb1+-) 21.Qg7 Kd6 (21...Kd6 22.Qh7 Kc5 23.Bc6 Kc6 24.Qg6 Qd6 25.Qd6 Kd6 26.Nb1 Rg8+-). GuestHGYP – GuestHNTT, freechess.org, 2016.

5.c4 Be7 6.a4 (better 6.Qh5!? g6 7.Qd5 Qd5 8.cd5+-) 6...c6 7.cd5 cd5 8.Ne2 (8.Nc3 Be6=) 8...Bd7 (8...Bd6 9.d3=) 9.Ng3 Nh6? (9...Be6 10.d3+=) 10.Be2?? (better 10.Qh5 Nf7 11.Qd5+-) 10...Nf5+= 11.0-0 (11.Nc3 Be6+=) 11...Ng3= 12.fg3 0-0 13.Nc3 (better 13.Bd4=) 13...f5 (better 13...Be6=) 14.Nd5+- Bg5? (14...Bd6 15.d3 ed3 16.Qd3+-) 15.Nf4 (better 15.Qc2!? a5+-) 15...Bh6 (better 15...Kh8!?+-) 16.Bc4 Kh8 17.Qb3 (17.Qh5 Qg5+-) 17...Qe7? (better 17...a6+-) 18.Ba3 g5 (18...Qd8 19.Bf8 Qf8+-) 19.Be7 Re8 20.Qc3 (20.Bf6 Bg7 21.Bg7 Kg7 22.Qc3 Re5 23.Qe5 Kf8 24.Qf6 Ke8 25.Nd5 Bb5 26.Qe7) 20...Bg7 21.Bf6 gf4 (21...h5 22.Bg7 Kh7 23.Qf6 Re6 24.Ne6 Be6 25.Qh6 Kg8 26.Be6) 22.Bg7 1–0. BeepBeepImAJeep (2565) – holst, lichess.org, 2017.

5.c4 Ne7 6.Qh5+= g6 (6...Ng6 7.Qd5 Qd5 8.cd5+/–) 7.Qd1 (7.Qh4 g5 8.Qh5 Ng6 9.cd5 Bb4+/–) 7...Be6 (7...Bg7 8.Qc2=) 8.cd5 (8.Bf6 Rg8+/–) 8...Bd5 (8...Nd5 9.Qc2+=) 9.Nc3 (9.Bf6 Rg8+/–) 9...Be6 (9...Rg8!?+=) 10.Ne4+/– Nf5?? (better is 10...Nd5+/–) 11.Nf6 (better is 11.Bf6 Be7 12.Bh8+-) 11...Kf7 12.Nf3 h5 (12...Bh6+-) 13.Ng5 Kg7 (13...Ke7 14.Ne6 Ke6 15.Bc4 Ke7 16.Nd5 Kd7 17.Bh8 Kc8+-) 14.Ne6 (14.Ne6 Kf7 15.Nd8 Ke7 16.Nb7+-) 1–0. GuestKFYB – GuestHTCW, freechess.org, 2017.

5.c4 Bf5!?=.

5.Nf3 Bd6 6.Be2 Be6 7.0-0 Ne7 8.d3 0-0 9.Nbd2 c5 10.c4 Nd7 11.a4 Nb6 12.cd5 Ned5 13.Nc4 Nc4 14.dc4 Nb4 15.e4 Qe7 16.Qb3 Bc7 17.Rad1 Rad8 18.Rd2 Rd2 19.Nd2 Rd8 20.Rd1 Rd4!? 21.Bd4 ed4 22.g3 f5 23.Qf3 f4 24.g4 Na2 25.Kg2? (25.Nb1 Nc3? 26.Nc3 dc3 27.Qc3+-) 25...Nc3 26.Rh1? (26.Ra1 b6 27.Nb1 Be5 28.Nc3 dc3 29.Rc1 Qd6 30.Qd3 Qd3 31.Bd3) 26...Na4 27.h4 Nc3 28.Bd3 Qf7 29.Re1 Be5 30.Rg1 Qd7 31.Kf1 a4 32.Qg2 h5 33.f3 Nd1 34.Qh3 Ne3 35.Ke1 hg4 36.Qh1 g3 37.Ke2 g2 38.Rg2 Ng2 39.Qg2 a3 40.Nb3 b6 41.Qg5 Qc7 42.h5 Bf6 43.Qg2 Qe5 44.h6 g5 45.Qh2 a2 46.h7 Kh8 47.Qh5 g4 48.Qh6 g3 49.Kd1 (49.Kf1 Qg5 50.Qf8 Kh7 51.e5 Bf5 52.Bf5 Qf5 53.Qf7 Kh6 54.Qf6 Qf6 55.ef6 Kg6 56.Kg2 Kf6 57.Na1 d3 58.Nb3 d2–+) 49...Qg5 50.Qf8 Kh7 51.e5 Bf5 52.Bf5 Qf5 53.Qf7 Kh6 54.ef6 Qd3 55.Kc1 Qe3 0–1. Plock,Joerg – Enigk, Magdeburg, 1995.

5.Nh3 Bh3 6.Qh5 g6 7.Qh3 Nd7 8.Qe6 Qe7 9.Qd5 0-0-0 10.Nc3 c6 11.bc6 (11...Nc5 12.Qc4 bc6 13.Rb1+-) 1–0. 34qaz – riser, Live Game Caissa's Web, 2004.

5.c4 Be6

6.d4 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.c4).

6.cd5+= Bd5 7.Nc3 Bb4 8.Nd5 (8.Qh5 Bf7 9.Qg4 Bc3 10.dc3 Bg6+=) 8...Qd5 9.Qc2 Ba5? (better is 9...Ne7!?+=) 10.Bc4+- Qg5?? (10...Qf5 11.Ne2 a6 12.Ng3+-) 11.g3 (better is 11.Qe4 Ne7 12.Qb7+-) 11...Qg4 (11...Qf5 12.f3! Ne7 13.Qe4 Nd7+/–) 12.Qb3 (better is 12.Qa4 Bb6 13.Bd5+-) 12...Nd7?? (better is 12...Ne7+=) 13.Bf7 Ke7 (13...Kd8 14.Bg8 Nc5 15.Qd5 Kc8+-) 14.Be6 (better is 14.Ba3 Kd8 15.Bg8+-) 14...Qe6–/+ 15.Qa3 Kf7 (15...Ke8 16.Qa5 Nc5 17.Bd4 Nd3 18.Ke2–/+) 16.Qa5 Ne7 (16...b6 17.Qc3 Nc5 18.Ne2 Nd3 19.Kf1–/+) 17.Ne2+= c6 18.Nf4 Qd6 (18...Qf5 19.a4–/+) 19.Ba3 Qb8 (19...Qe5!? 20.Rd1 a6+=) 20.Be7+= Ke7 (20...Qe5 21.Bf6 Nf6 22.0-0=) 21.bc6 (21.Qb4!? Qd6 22.Qe4 Qe5 23.Qb4 c5 24.Qb1+/–) 21...bc6= 22.0-0 (22.Qa4 Qe5 23.Rc1 Rhb8=) 22...g5 23.Qa3 (23.Nh5 Qb5 24.Qa3 Qc5 25.Qc5 Nc5 26.Rfc1=) 23...Kf7 (better is 23...Qd6!? 24.Qd6 Kd6–/+) 24.Ne2 Ne5 25.Nd4 Rc8 (better is 25...g4!?=) 26.f4 gf4 27.Rf4 (27.Rab1!? Qc7 28.ef4+/–) 27...c5+= 28.Raf1 (better is 28.Nf5 Ke6 29.Raf1+/–) 28...Nd7?? (better is 28...cd4 29.Qa6 Qc7 30.Qf6 Kg8 31.Re4 Re8 32.Rd4 Rab8=) 29.Nf5 h5 (29...Re8 30.Qa4 Ne5 31.Qe4+-) 30.Re4 Ne5 (30...Ne5 31.d4 Ng6+-). GuestFBRQ – GuestVFWV, freechess.org, 2017.

4.e3 Ne7

5.a4 a6 6.c4 ab5 7.cb5 Bf5 8.a5 c6 9.b6 Ng6 10.g4 (10.Ne2 Be6=+) 10...Bb1 (10...Be6 11.h4–/+) 11.Qb1=+ Na6 12.Ba6 (12.f3 Bb4=+) 12...Ra6–/+ (12...ba6?! 13.Qf5=) 13.Qf5 Bb4 Black fights for the Initiative 14.Bc3 Bc3 15.dc3 Kf7 (15...Qa8 16.Qe6 Ne7 17.Qd6–/+) 16.h4 White prepares the advance g5 16...Qc8 17.Qc8 Rc8 18.h5 Nf8 19.Nf3 (better 19.h6!?–/+) 19...Rca8–+ 20.g5 (20.Ke2 Ra5 21.Ra5 Ra5–+) 20...Ra5 21.Ra5 Ra5 22.0-0 Nd7 23.gf6 gf6 24.Kh2 Ke6 25.h6 Nb6 26.Rg1 Ra2 27.Rg7 Nc4 (27...Na4 28.Kg1 Nc3 29.Rh7 Ne2 30.Kh2–+) 28.Rh7 (better 28.Kg1–+) 28...Ne3 29.Rb7 (29.Kg1 Ng4 30.Rh8 Nh6 31.Rh6 Ra3–+) 29...Ng4 (29...Rf2 30.Kg3 Rg2 31.Kh3–+) 30.Kg3 (30.Kg1 Nh6 31.Rc7 Kd6–+) 30...Nh6 (30...Nf2?! 31.h7 Ne4 32.Kg4–+) 31.Rh7 (31.Rb6 Kd6–+) 31...Nf7 32.Rh4 (32.Kg2 Nd6 33.Nh2 Ne4–+) 32...Rc2 (32...Nd6!? 33.Kg2 Ne4 34.Kg1–+) 33.c4 d4 (33...Nd6 34.cd5 cd5 35.Rb4–+) 34.Rg4 (34.Rd4 Rc3 (34...ed4?! 35.Nd4 Ke5 36.Nc2–/+) 35.Re4 f5–+) 34…Rc4 (34...Rc4 35.Nd2 Rc1–+) 0–1. hamiltonharris (1960) – esteritafelix (2135), ChessWorld.net, 2020.

5.Nc3 Bf5 6.Nf3 a6 7.a3 Ng6 8.d4 e4 9.Nh4 Nh4 10.Qh5 g6 11.Qh4 h6 12.ba6 Na6 13.Be2 Be7 14.f3 ef3 =.

5.c4 Bf5 6.cd5 Nd5 7.Bc4 c6 (7...Nb4!? 8.Na3 Nd3 9.Bd3 Qd3–/+) 8.Qb3 a6 9.bc6 bc6 10.Nc3 Be6 (10...Nd7 11.Nd5 cd5 12.Bd5=) 11.Nf3 (better is 11.Qb7 Bc5 12.Qa8+/–) 11...a5?? (better is 11...Nd7 12.Qb7 N7b6 13.Nd5 Bd5 14.Bd5 cd5=) 12.Qb7+- Nd7? (12...Qc7 13.Qa8 Nb6 14.Qa5 Bc4+-) 13.Qc6 (13.Nd5?! cd5 14.Qc6 Bg8=) 13...Bb4 (13...Bg8 14.Nd5 Rc8+-) 14.Qe6 Qe7 15.Qd5 (15.Qd5 Rc8 16.0-0+-) 1–0. GuestNRRC – GuestXxXx, freechess.org, 2017.

5.d4 e4 6.c4 Be6 7.Nc3 dc4 8.Ne4 Nd5 9.Qd2=.

5.Be2 a6 6.d4 e4 7.ba6 Na6 8.c4 Be6 9.Nc3 dc4 10.Ne4 Bd5 11.f3 b5 12.Kf2 f5 13.Nc3 Bc6 14.a4 b4 =+.

5.Nf3 a6 6.Be2 ab5 7.Bb5 c6 8.Be2 Nf5 9.0-0 Qb6 10.Qc1 Bd6 11.d3 Bc5 12.Ba3 Ra3 13.Na3 Qa7 14.Nb1 Ne3 =+.

5.Nf3 Bd7 6.a4 (6.d4 e4 7.Nfd2 f5=) 6...a6 7.c4 (7.Be2 Nf5=) 7...ab5 8.ab5 Ra1 9.Ba1 Be6 (9...Bg4 10.h3 Bh5 11.d4=) 10.cd5 (10.d4 e4 11.Nfd2 c6=) 10...Bd5 (10...Nd5 11.e4 Nf4 12.d4 Bb4 13.Nbd2 ed4 14.g3+=) 11.Nc3= Be6 (11...Nd7 12.d4=) 12.Be2 (12.d4 Nd7+=) 12...Nd7 (12...Nf5 13.0-0=) 13.0-0 Nb6 (13...Ng6 14.d4+=) 14.d3 (14.d4 Ng6+=) 14...Qd7 (14...Ned5 15.Ne4=) 15.Qc2 (15.d4 Ng6+=) 15...Ned5 1–0. DEFFM – GuestFerdz, freechess.org, 2016.

5.Nf3 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Ne7).

5.Nf3 Bf5 6.c4 a6 (6...Bg4 7.cd5 Nd5 8.Bc4=) 7.Qa4 (7.cd5!? Qd7 8.Nh4 ab5 9.d6 Qd6 10.Nf5 Nf5 11.Qf3+/– (11.Bb5?! c6 12.Bc4 b5=)) 7...Nd7+= 8.Nc3 (8.d4 Nb6 9.Qd1 dc4 10.ba6 Ra6 11.de5 Qd1 12.Kd1 Na4=) 8...Nc5 (8...Nb6 9.Qb3 dc4 10.Bc4 Nc4 11.Qc4–/+) 9.Qd1 ab5 10.cb5 d4 11.Nb1 (11.ed4 ed4 12.Nb1 d3–/+) 11...de3 12.de3 Qd1 13.Kd1 Rd8 (13...Nd5 14.Nbd2–/+) 14.Ke1 Nd5 15.a3 (better is 15.Ba3!?–/+) 15...Nb3–+ 16.Nbd2 (16.Nfd2 Na1 17.Ba1 Nb6–+) 16...Na1 17.Ba1 Ba3 (better is 17...Nb6 18.Bb2–+) 18.Bc4? (18.e4 Nb4 19.Be5 fe5 20.ef5 Rf8–+) 18...Nb4 (18...Bb4 19.Bb2–+) 19.Bc3 (19.e4 Bg4–+) 19...Nd3 20.Kf1 (20.Ke2 Nc1 21.Ke1 Bc2–+) 20...Bb2 21.Bb2 Nb2 22.Be2 0-0 (22...Ra8 23.Ne1–+) 23.h3 Bd3 24.Bd3 Nd3 25.Ke2 Rd5 26.Rb1 Ra8 (better is 26...Rfd8 27.g3–+) 27.Ne1 (27.g3 Kf7–+) 27...Ne1 (better is 27...Nf2!? 28.e4 Rd7 29.Rc1–+) 28.Ke1 Ra5 29.b6 cb6 30.Rb6 Rab5 31.Rb5 Rb5 32.Kd1 (32.e4 Rc5–+) 32...Kf7 (32...Rb2 33.Ke2–+) 33.Nc4 (33.Kc2 Ra5–+) 33...Ke6 34.Ke2 (34.Kc2 Rc5 35.Kb3 Kd5 36.Nb6 Ke4–+) 34...Kd5 (34...Kd5 35.Nd2 e4–+) 0–1. Engles,Michael – Haet,Olivier, IECC, 2001.

5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 Qd7 8.c4 c6 9.Bg4 (9.cd5!? Nd5 10.Qb3+=) 9...f5 10.Bh5 Ng6 11.Be5 (better is 11.Qf3 dc4 12.Qh3=) 11...Kd8?? (better is 11...dc4 12.Bb8 Rb8 13.bc6 Qc6=) 12.Bb8+- Rb8 13.cd5 (13.bc6 bc6 14.cd5 Nh4+-) 13...Qd5+/– 14.Nc3 (better is 14.0-0 Nh4 15.f3 Qb5 16.Bf7+/–) 14...Qe5? (better is 14...Qg2 15.Bf3 Qh3 16.bc6 Ne5+/–) 15.d4 Qf6 16.Qa4 Ra8 (16...cb5 17.Nb5 (worse is 17.Qb5 Qc6 18.Qa5 b6 19.Qd5 Qd5 20.Nd5 Bd6+/–) 17...Qa6 18.Qb3+-) 17.Rc1 f4 (17...cb5 18.Nb5 Qe7 19.Qc2+-) 18.Ne4 Qf5 19.bc6 b5 (19...bc6 20.Qc6 Rc8 21.Qc8 Qc8 22.Rc8 Kc8 23.Bg6 hg6 24.ef4 Kd7+-) 20.c7 Kd7 (20...Ke7 21.Qb4 Ke8 22.Nd6 Bd6 23.Qd6+-) 21.Qa6 (21.Bg4 Bb4 22.Qb4 Qg4 23.Qb5 Ke7 24.Qc5 Ke8 25.Qd5+-) 21...Ne7 (21...Bb4 22.Kf1 Qh5+-) 22.c8B! Nc8 (22...Rc8 23.Qd6) 23.Qc6 Ke7 24.Qe8 1–0. Francia,P – Dillhole, itsyourturn.com, 2004.

5.f4 ef4 6.Qh5 g6 7.Qh4 Bg7 8.Qf4 Bf5 9.c4 Nd7 10.Nf3 Nc5 11.Qd4 Ne6 12.Qh4 g5 13.Qf2 Rc8 14.Nc3 dc4 +=.

5.f4 Bf5 6.Nf3 e4 7.Nd4 Bd7 8.Be2 c5 9.Nb3 b6 10.0-0 Nf5 11.g4 Ne7 12.d3 ed3 13.Bd3 c4–+ 14.Nd4 cd3 15.cd3 Qc8 16.f5 a6 17.Nc3 ab5 18.Ncb5 Bb5 19.Nb5 Qc5 20.Nd4 Nd7 21.Rc1 Qb4 22.Bc3 Qa4 23.Ne6 Kf7 24.g5? Nc5?? 25.gf6?? Qd1–/+ 26.Ng5 Ke8 27.f7 Kd8 28.Rfd1? Ra2 29.Bb4? Nf5–+ 30.Bc5 bc5 31.Ne6 Ke7 32.Nf8 Kf8 33.Rc5 Kf7 34.Rc7 Kg6 35.Kh1 (35.Kh1 Re8 36.Rg1 Kh6 37.Rc6 g6 38.Rg2 Ra1 39.Rg1 Rg1 40.Kg1 Re3 41.Rc3–+) 0–1. elsh1403 – hazielklop, internet, 2011.

5.c4 dc4

6.Bc4 Nf5 7.Nc3 c6 (7...a6 8.a4=) 8.a4 Nd7 (8...Nd6 9.Bb3=) 9.Qh5 (9.bc6 bc6 10.Qh5 g6=) 9...g6 10.Qd1 (10.Qe2 Nd6=) 10...c5 (10...cb5 11.ab5 Nb6 12.Bb3=) 11.Qb3 (11.a5 Nd6 12.Bd5 Be7+=) 11...Nd6 12.Be2 (12.d3=) 12...b6 (12...c4!? 13.Qd1 Nc5+=) 13.Bf3+= c4 (13...Rb8 14.d3+=) 14.Qc2 (14.Qa2 Rb8 15.Ba3 Nc5 16.Bc5 bc5+=) 14...Rb8 (14...Bb7 15.Ba3=) 15.Nge2 (15.Ba3 f5 16.Bc6 Bb7+=) 15...Bb7 16.0-0 (16.Bb7 Nb7 17.0-0 Ndc5=) 16...Bf3+= 17.gf3 f5 (17...Nc5 18.Nc1+=) 18.d4 (18.f4 Bg7=) 18...Qg5 (18...cd3 19.Qd3 Rc8 20.f4+=) 19.Kh1= Nf6?? (better is 19...Qh5!? 20.Kg2 Bg7=) 20.Rg1 (20.de5 Qh5 21.Kg2 Nde4 22.fe4 Ne4 23.Ne4 fe4 24.Qe4 Qe2 25.Qc6 Kf7 26.Qf6 Ke8 27.Qe6 Be7+-) 20...Qh4 (better is 20...Qh5!? 21.de5 Qf3 22.Rg2 Nde4 23.Ne4 Ne4+-) 21.de5+- Qf2 22.Rg2 Qf3 23.ef6 (better is 23.Nd4 Qb7 24.ef6+-) 23...h5? (better is 23...Kf7+-) 24.Nd4 Qe3 (24...Qb7+-) 25.Re2 Qe4 (25...f4 26.Nd5 Kf7 27.Ne3 fe3 28.Nc6+-) 26.Re4 (26.Ne4 fe4 27.Ba3 Rc8 28.Bd6 Bd6 29.Qe4 Kd7 30.Qe6 Kc7 31.Qf7 Kb8 32.Nc6 Rc6 33.bc6 Be7 34.Qe7 Kc8 35.Qd7 Kb8 36.Qb7) 26...fe4 27.f7! Kf7 (27...Nf7 28.Qe4 Double attack (28.Qe4 Deflection; 28.Ne4 Zwischenzug); 27...Kf7 28.Rf1 Double attack (28.Rf1 Decoy; 28.Ne4 Zwischenzug)) 28.Rf1 Kg7 29.Ne6 Kh7 30.Ng5 (30.Ne4 Be7 31.Nd6 c3 32.Rf7 Kh6 33.Rg7 Bd6 34.Qg6) 30...Kh6 31.Nce4 Ne4 32.Ne4 Bb4 33.Qc1 Kh7 34.Ng5 Kg8 (34...Kh6 35.Nf7 Kh7 36.Qh6 Kg8 37.Qh8) 35.Qc4 1–0. GuestQHBS – flopez, freechess.org, 2016.

6.Bc4 Ng6 7.Qb3 Bd6 8.h4 (8.Bf7 Ke7=) 8...Nd7 9.h5 Ne7 10.Bf7 Kf8 11.Nf3?? (better 11.d4=) 11...Nc5-+ 12.Qc4 a6 (12...e4 13.h6 Nd3 14.Kf1 Nb2 15.Qe4 Kf7 16.hg7 Kg7 17.Qc2-+) 13.a4? (13.d4 ab5 14.Qb5 c6-/+ (14...Kf7?! 15.dc5 c6 16.Qb4=+)) 13...ab5 (better 13...e4 14.Kf1 ef3 15.h6 ab5 16.ab5 Ra1 17.Ba1-+) 14.ab5 Ra1 (14...Bf5 15.Ra8 Qa8 16.0-0-+) 15.Ba1 Bd7?? (better 15...Bf5!? 16.0-0 Bd3-+) 16.Nc3 (16.d4 Qa8 17.Bc3 ed4 18.Nd4 Nc8=) 16...Qc8 (16...e4 17.d4 Nd3 18.Ke2 ef3 19.Kd3 fg2 20.Rg1-/+) 17.Bd5 (better 17.d4!? ed4 18.Nd4=) 17...Nd5-/+ 18.Qd5?? (better 18.Nd5 Be6 19.d4-/+) 18...Be6-+ 19.0-0 (19.Qc5 Bc5 20.h6 Qd7-+) 19...Bd5 20.Nd5 Qe6 21.Nc3 f5 (better 21...e4 22.Nd4 Qe5 23.g3-+) 22.d4 ed4 23.Nd4 Qh6 24.Nf5 Qh5 (better 24...Bh2 25.Kh2 Qh5 26.Kg1 Qf5-+) 25.Nd4 (25.Nd6 cd6 26.e4 Kf7-+) 25...Be5 (25...Qh2) 26.Nce2 (26.Nf3 Kf7 27.Ne5 Qe5-+) 26...Bd4 (26...Qh2) 27.Bd4 (27.Nd4 Kf7-+) 27...Ne4 (27...Qe2 28.Bc5 Kf7 29.b6 cb6 30.Bd4-+) 28.Nf4 (28.f3 Nd6 29.b6 cb6 30.Rc1-+) 28...Qg5 (better 28...Qb5 29.f3 Nf6-+) 29.Rc1?? (29.Ne6 Kf7 30.Ng5 Ng5 31.Be5+=) 29...c6 (better 29...Qh4!? 30.Rc7 Qf2 31.Kh2 Qh4 32.Kg1 Qe1 33.Kh2 Qg3 34.Kg1-+) 30.bc6?? (30.Ne6 Ke7 31.Ng5 Ng5 32.bc6 bc6 33.Rc6 Ne6+-) 30...bc6?? (30...Qh4 31.cb7 Qf2 32.Kh1 Ke7 33.Rc7 Kd6=) 31.Rc6?? (better 31.Ne6!? Ke7 32.Ng5 Ng5 33.Rc6+-) 31...Kf7 (better 31...Qf5-+) 32.Rc7= Ke8 33.Rc8 Kd7 34.Rh8 Nf2?? (better 34...Qh4 35.Nd3 g5=) 35.Kf2 (better 35.Rh7 Nh3 36.Nh3+-) 35...Qa5? (35...Qh4 36.Kf3 g5+-) 36.Kf3 1-0. ClayPigeons (2130) - sahinmltyy (2015), Rated Bullet game, lichess.org, 2020.

5.c4 c6

6.a4 Be6 7.Qc2 (7.c5 Nd7 8.d4 Rc8=) 7...Nd7 (better is 7...Bf5 8.Bd3 Bd3 9.Qd3 Nd7+=) 8.Ne2 (8.d4 cb5 9.ab5 dc4+=) 8...c5 (better is 8...dc4!? 9.Ng3 Nc5–+) 9.f4 (9.Nec3 Bf5 10.e4 de4 11.Ne4 Ng6=) 9...d4 (9...Bf5 10.Qb3+=) 10.Ng3 (10.a5 a6 11.b6 Nc6+=) 10...de3 (10...ef4 11.ef4 Qc7 12.Qe4=) 11.de3= Qc7 (11...ef4 12.ef4 Qc7 13.Qe4=) 12.fe5 (12.f5 Bf7=) 12...Ne5 13.Be2 0-0-0 (13...N7g6 14.0-0=) 14.0-0 N7g6 15.Nd2 (15.a5 Bd6=) 15...Bd6 16.Nde4 1–0. GuestFJQJ – GuestKNNP, freechess.org, 2016.

6.Qb3 dc4 7.Bc4 Nd5 8.bc6 bc6 9.e4 Nb6 10.Bf7 Ke7 11.Nf3 N8d7?? (better 11...Qd6!?+=) 12.d4 (12.Qe6) 12...Qc7?? (12...Kd6 13.0-0 Rb8 14.Rc1+-) 13.0-0 (13.Qe6 Kd8 14.Qe8) 13...Ba6?? (13...Kd8 14.Rd1 Bd6+-) 14.Qe6 Kd8 15.Qe8 1-0. ClayPigeons (2195) - Shouder (2070), Rated Bullet game, lichess.org, 2020.

5.c4 d4

6.ed4 ed4 7.Nf3 c5 8.bc6 (8.Bd3!?+=) 8...Nbc6+= 9.Bd3 Bf5 10.Qe2 (10.Bf5 Nf5 11.0-0=) 10...Qd7 (better is 10...Bg4!?=) 11.Bf5+/– Qf5 12.Nd4 Nd4 13.Bd4 Qd7 (13...Kf7 14.0-0+/–) 14.Qe3 (14.Be3 g6+/–) 14...0-0-0 (better is 14...Kf7!? 15.Qc3 Ng6+=) 15.Ba7+- Nf5 16.Qh3 Re8 17.Be3 Bc5 (17...Ne3 18.Qd7 Kd7 19.de3+/–) 18.0-0 (18.Nc3 Nd6 19.Qh4 g5+-) 18...Nd4 (18...Bd4 19.Bd4 Nd4 20.Qd7 Kd7 21.Nc3+-) 19.Qd7+- Kd7 20.Nc3 b6 (20...Kc6 21.Rab1+-) 21.Nb5 Nc2 22.Rad1 (22.Rab1 Ne3 23.fe3 Ra8+-) 22...Re6 (22...Ra8 23.Nc3+-) 23.Bc5 bc5 24.d4 cd4 (24...Nd4 25.Nd4 cd4 26.Rd4 Kc6 27.h4+-) 25.Nd4 (better is 25.Rd2!? Nb4 26.Nd4 Rd6+-) 25...Nd4 26.Rd4 Kc6 27.Rd5 (27.Rc1!? Ra8+/–) 27...Ra8+/– 28.g3 (28.Rd2!?+/–) 28...Ra2+= 29.h4 Rc2 30.Ra5 (better is 30.Rd8+=) 30...Rc4 (better is 30...Re7=) 31.Ra6+/– Kd5?? (better is 31...Kd7 32.Rd1 Ke7 33.Ra7 Ke8+-) 32.Rd1+- Ke5 33.Re1 Re4 34.Re4 Ke4 35.Re6 Kf5 36.Re7 Kg6 37.g4 h6 (37...f5 38.Re6 Kf7 39.gf5+-) 38.f4 1–0. GuestQJFT – sindoseijo, freechess.org, 2017.

6.ed4 ed4 7.Nf3 Nf5 8.Qe2 (8.Bd3 Bc5+=) 8...Kf7= 9.g4 d3 (9...Bc5 10.Qd3 (10.gf5? Re8–+) 10...Nd6 11.Bd4 Bd4 12.Qd4 Re8 13.Be2=) 10.Qe4 (10.Qd3 Qe7 11.Be2 Nd6+/–) 10...Ne7 (10...Nd6 11.Qf4+=) 11.Bd3 (11.g5 Nd7 12.Qd3 Ke8+/–) 11...Nd7 (better is 11...Bg4 12.c5 Be6+=) 12.c5?? (better is 12.Bd4+/–) 12...Nc5+= 13.Bc4 Be6 (13...Ke8!? 14.Qe3 Bg4+=) 14.Be6= Ne6 15.0-0 (15.Nc3 a6 16.g5 ab5 (worse is 16...fg5 17.Ne5 Kg8 18.Qb7+=) 17.gf6 gf6 18.Nb5 Nc5+=) 15...Qd5 16.Qe3 (16.Nc3 Qe4 17.Ne4 Nf4=) 16...Ng6 (16...Qc4!?–/+) 17.Nc3+= Bc5?? (better is 17...Qd7+=) 18.Nd5+- Be3 19.fe3 Rhd8 20.Nc3 Nc5 (20...a6 21.g5+-) 21.h4 White prepares g5 (better is 21.d4!? Ne6+-) 21...Nd3 22.Ba3 (22.Rab1 a6 23.h5 Nf8+-) 22...Nge5 23.Ne5 Ne5 24.g5 Rd2 (24...Nc4 25.Bc1+-) 25.gf6 gf6 26.Ne4 Rg8 27.Kh1 Rgg2 (27...Rc2 28.Rf6 Kg7+-) 28.Rf6 Ke8 (28...Kg7 29.Nd2 Rd2 30.Rf5+-) 29.Nd2 Rd2 30.Raf1 (better is 30.Re6 Kd8 31.Re5+-) 30...Ra2 (30...Kd7+-) 31.Re6 Kd7 32.Re5 (32.Re7 Kd8 33.Rf8) 32...Ra3 33.Rf7 (33.Rd1 Rd3 34.Rd3 Kc8 35.Re8) 33...Kd6+- 34.Re4 c6 (34...a6 35.Rd4 Ke6 36.Rc7 ab5 37.Rh7 Re3 38.Rb4+-) 35.Rd4 (better is 35.Rb7!? cb5 36.Rb5 a6+-) 35...Kc5 36.Rf5 (36.bc6 bc6 37.Rf5 Kb6 38.Rb4 Ka6+-) 36...Kb6 37.Rd6 (37.bc6!? Kc6 38.Re4 Kd6+-) 37...Re3 38.Kg2 a5 (38...Re7 39.Rh6+-) 39.bc6 (39.ba6 ba6 40.Rf7 a5+-) 39...bc6 40.Kf2 a4 (40...Re7+-) 41.Ke3 1–0. GuestJHTS – GuestMVQD, freechess.org, 2017.

5.c4 Be6

6.cd5 Bd5 7.Nc3 Nd7 8.Nd5 Nd5 9.Bc4 N7b6 10.Bb3 Nb4 11.d4 ed4 (11...e4!? 12.Bc2 f5+=) 12.Bd4+= N4d5 13.a3 Qd7 14.Qe2 (14.Qd3 a6 15.ba6 Ra6 16.Qe4 Be7+=) 14...0-0-0 (14...a6!? 15.ba6 Ra6=) 15.Nf3+/– Nf4?? (better is 15...Bd6+/–) 16.ef4+- Re8 17.Be3 Bc5 18.0-0 Be3 19.fe3 Re4 20.Rad1 Qe7 21.Rd3 (21.Rfe1!? Re8 22.Bc2 Rc4+-) 21...Re8 22.Rfd1 (better is 22.Nd4 Re3 23.Qg4 Nd7 24.Nf5 Rd3 25.Ne7 Re7 26.Be6+-) 22...Rf4 (22...Re3 23.Qc2+-) 23.Qd2 (better is 23.Bf7! Qf7 24.ef4 g6+- (24...Re2?? 25.Rd8)) 23...Re4 24.a4! Re3 (24...Na4 25.Rd7 Combination) 25.Re3 (25.a5 Rd3 26.Qd3 Nd7+-) 25...Qe3 26.Qe3 Re3 27.Nd4 c5? (27...a5 28.Kf2 Re8 29.g3+-) 28.bc6 (28.Ne6!? Nd7 29.Bd5 c4 30.Bc4 g6+-) 28...bc6 29.Kf2 (29.a5 Nd5 30.Nc6 Rb3 31.Rd5 a6+-) 29...Rc3 30.Be6 Kc7 (30...Kb7 31.a5 Nd5 32.Nc6+-) 31.a5 Na4 32.Rb1 (better is 32.Ne2 Rc2 33.Rd7 Kb8 34.Rg7+-) 32...Nc5+/– 33.Bf7 Ra3 34.a6 Ra6 (34...Ra6 35.Ne6 Double attack; 34...Na6 35.Ne6 Double attack) 35.Ne6 Ne6 36.Be6 Ra2?? (36...Kd6 37.Bc4 Ra4 38.Be2=) 37.Kf3 (better is 37.Ba2 h6 38.Re1+-) 37...Ra3= 38.Kf2 a5 (38...Kd6 39.Bg4=) 39.Ke2 (39.Rd1!?+/–) 39...Rc3 (39...Ra4 40.Ke3=) 40.Kd2 (40.Rd1 Rc5 41.Rd7 Kb6=) 40...Rc5 41.Ra1 Kb6 42.Rb1 (better is 42.g3=) 42...Ka6?? (better is 42...Rb5 43.Kc2 Rb1 44.Kb1 Kb5+=) 43.Bc8+- Ka7 44.Rb7 Ka8 45.Rg7 a4 (better is 45...h5+-) 46.Bb7 (better is 46.Rh7 a3 47.Be6+-) 46...Kb8+= 47.Ba6 a3 48.Rb7 Ka8 49.Rb1 (49.Rh7?? a2 50.Rh8 Ka7–+) 49...Ka7 50.Bc8 (50.Bd3 Rg5 51.Be4 Rh5+-) 50...h6 (50...Rg5 51.g3+/–) 51.Be6 (51.Ra1!? Ra5+-) 51...Re5 52.Ba2 (52.Bc4 Rg5 53.g3 Rh5+/–) 52...Rf5 53.Ke2 Re5 (53...Rb5 54.Kd3 Kb6 55.Kc3+/–) 54.Kd3+/– Rf5 55.Rb3 Ra5 (55...Rf2!? 56.Ra3 Kb6+/–) 56.Kc4+- Ka6 57.Rb8 (57.Kb4 Kb6+-) 57...Ka7 (57...Rh5 58.Ra8 Kb6 59.Ra3 Rh2 60.Rb3 Kc7 61.Rg3+/–) 58.Rb4 Ka6 (58...Rh5 59.h3+-) 59.Kc3 (better is 59.Kb3+-) 59...c5? (59...Rh5 60.h4+-) 60.Bc4 (better is 60.Rh4!? Kb5 61.Rh6 Ra4 62.Rf6 Re4+-) 60...Ka7 61.Rb1 a2 (61...Ra4 62.Rc1+-) 62.Ra1 Ra3 63.Kb2 Kb6 (63...Ra4 64.Ra2 Ra2 65.Ba2+-) 64.Ba2 (better is 64.Ka3 Kc6 65.Ra2+-) 64...Rd3 65.Bc4?? (better is 65.Kc2 Ra3 66.Rb1 Kc7 67.Bb3+-) 65...Rd2+/– 66.Kc3 Rg2 67.Rf1 (better is 67.Ra2!? Ra2 68.Ba2+/–) 67...Rh2= 68.Rf6 Kc7 69.Bd5 Rh3 (69...h5!?=) 70.Kc4+/– h5 71.Kc5 h4?? (71...Rc3 72.Bc4+/–) 72.Rh6 (better is 72.Rf7 Kd8 73.Kd6+-) 72...Rh2 (72...Rc3 73.Bc4+/–) 73.Rh7+- Kd8 74.Kd6 Rd2?? (better is 74...Re2+-) 75.Rh8 1–0. GuestBKQH – GuestXxXx, freechess.org, 2017.

6.cd5 Bd5 7.Nf3 Nd7 (7...e4 8.Nh4=) 8.Nc3= Be6 (8...e4 9.Nd4 Ne5 10.Qb1=) 9.Be2 (9.d4 Nd5+=) 9...Nd5 (9...Ng6 10.d4=) 10.0-0 Bd6 11.d4 Nc3 12.Bc3 e4 13.Nd2 Bd5 14.f3 (14.Bc4 Bc4 15.Nc4 Nb6 16.Nd6 Qd6+=) 14...ef3 (14...f5 15.fe4 fe4 16.Rf5=) 15.Bf3+= (15.Nf3?! Qe7 16.Bd2 Qe4=) 15...Bf3 16.Qf3 (16.gf3?! f5=) 16...Qc8 (16...Qe7 17.Nc4 Rb8 18.e4+/–) 17.Qh5 (17.Nc4 Be7+/–) 17...g6 18.Qd5 (18.Qh6 Bf8 19.Qh3 Nb6+/–) 18...Ke7 (18...a6 19.Qe6 Kd8 20.d5+/–) 19.Qb3 (19.Ne4 Nb6 20.Qb3 f5 21.Nd6 cd6+/–) 19...Qg8 (19...a6 20.Ne4+/–) 20.d5 Nb6?? (better is 20...Be5 21.Rac1 Rc8+/–) 21.Bf6+- Kd7 22.e4 Qe8 (22...h6 23.Qh3 Ke8 24.Bh8 Qh8 25.Qe6 Kd8+-) 23.Qh3 1–0. Janek – Tyldum, internet, 2017.

5.c4 Ng6

6.a4 Be6 7.Nc3 (7.cd5!? Bd5 8.Nc3=) 7...dc4-/+ 8.Qc2 Bb4 (8...c6!?-/+) 9.Nf3=+ 0-0 (9...c6 10.Na2 Bd6 11.Bc4 Bc4 12.Qc4=) 10.Na2 Ba5 11.Bc4 Re8 12.0-0 Bc4 13.Qc4 Kh8 14.d4 (14.Bc3 c6+=) 14...Nd7 (14...e4 15.Ne1=) 15.Rad1 (15.Bc3 Bc3 16.Nc3 a6+=) 15...Nb6 16.Qb3 e4 17.Nd2 Qe7 (17...a6 18.Bc3 ab5 19.ab5=) 18.Ba3 (18.Bc3 Bc3 19.Nc3 f5+/-) 18...Qd7+= 19.Nc3 (better 19.Bb4 Bb4 20.Nb4+=) 19...Rad8?? (19...Bc3 20.Qc3 Na4 21.Qc2 Qb5 22.Ne4=+) 20.Qc2?? (20.Nce4 Nh4+/-) 20...Nd5?? (better 20...Bc3 21.Qc3 Na4=+) 21.Nce4 (21.Nd5 Qd5 22.Nc4 Bb6+-) 21...Bd2 22.Nd2 (22.Rd2 Nh4 23.Re2 Re4 24.Qe4 Nc3+/-) 22...Qg4 (better 22...Nh4+/-) 23.Nf3 (23.h3 Qh5+/-) 23...Nh4 (better 23...Ngf4 24.ef4 Nf4=) 24.Nh4+- Qh4 25.g3 (25.Bc5 b6 26.Ba3 Qe4 27.Qe4 Re4+/-) 25...Qh5 26.Rfe1 (26.e4 Qg6 27.Rfe1 c6 28.bc6 bc6+-) 26...f5 27.Rc1 (27.Bc5 Re6+/-) 27...h6 (27...f4 28.e4 f3 29.Qb3=) 28.Qe2 Qg6 29.Qf3 Nf6? (29...Kg8!?+/-) 30.Rc7 (30.Qb7 f4 31.Rc7 fg3 32.fg3 Nd5+-) 30...Ne4? (better 30...Rd4 31.ed4 Re1 32.Kg2 b6+-) 31.Rb7 h5 (31...a6+-) 32.Ra7 h4 33.Rc1 hg3 34.hg3 Re6 (34...Rc8 35.d5 Rc1 36.Bc1+-) 35.Kg2 (better 35.Rcc7 Ng5 36.Qh1 Nh7 37.Rg7 Qg7 38.Rg7 Kg7 39.Qb7 Kg6 40.d5+-) 35...Qh6 (35...f4 36.Qf4 Rf6 37.Qh4 Kg8+-) 36.Rh1 Qh1 37.Kh1 Rh6 (37...Rh6 38.Kg2 Rf6+-). ClayPigeons (2100) - aloisquetin (2135), Rated Bullet game, lichess.org, 2020.

6.cd5 Qd5 7.Nc3 Qd8 8.Bc4 Bd7 (8...a6 9.Qb3 Qd7 10.Nf3=) 9.Qb3+= Qe7 10.h4 b6?? (better 10...Qb4 11.Nd5 Qd6+/-) 11.h5+- Nf4 12.ef4 ef4 13.Nge2 Bf5 (13...f3 14.Rh4 f5 15.Rh3+-) 14.0-0 (14.Bd5 f3+-) 14...Nd7 15.Nf4 (better 15.Nd4!? Nc5 16.Qd1 Qd7+-) 15...0-0-0 16.Be6 (16.Rae1 Nc5 17.Re7 Nb3+-) 16...Be6 17.Qe6 g6 (17...Qb4 18.Nd3 Qh4+-) 18.Qe7 (18.Ncd5!? Qd6 19.Rac1 Kb8+-) 18...Be7 19.hg6 hg6 20.Ng6 Rh7 21.Ne7 (21.Rfe1 Bc5 22.Nd5 Kb7+-) 21...Re7 22.Nd5 Ne5 (22...Re6+-) 23.Ne7 (23.Ne7 Kb7 24.Rad1+-) 1-0. zembelek (2105) - mehranalivand1 (2105), Rated Blitz game, lichess.org, 2016.

5.d4 ed4

6.ed4 A) 6...Nf5 A1) 7.Nd2 a6 8.Bd3 ab5 9.Bb5 Bd7 10.Bd3 Nc6+=; A2) 7.Qf3 Qd7 8.Bd3 a6 9.Nd2 ab5 10.Qe2 Kd8+=; A3) 7.Bd3 a6 8.Qe2 Be7 9.Qf3 Qd7 10.Nc3 Bb4=; B) 6...Bf5 7.Bd3 a6 (7...Bd3 8.Qd3 Qd7 9.Ne2 c6 10.a4 Qf5=; 7...Qd6 8.Ba3 Qd7 9.Ne2 Bd3 10.Qd3 c6=; 7...Qd7 8.Ne2 Bd3 9.Qd3 a6 10.ba6 Na6=; 7...c6 8.Nf3 Qd7 9.Nc3 cb5 10.Bb5 Nbc6=) 8.Nf3 ab5 9.Bb5 c6 10.Bd3 Qb6=; C) 6...a6 C1) 7.Bd3 ab5 (7...Bf5 8.Nf3 ab5 9.Bb5 c6 10.Be2 Qa5=) 8.Bb5 c6 9.Bd3 Ng6 10.Bc1 Bb4=; C2) 7.Be2 Ng6 (7...ab5 8.Bb5 c6 9.Bd3 Bf5 10.Nf3 Bd3=; 7...Nf5 8.Nf3 ab5 9.Bb5 c6 10.Bd3 Qe7=; 7...Bf5 8.Nf3 ab5 9.Bb5 c6 10.Bd3 Bd3=) 8.Nf3 ab5 9.Bb5 c6 10.Be2 Nf4=; C3) 7.Nd2 Bf5 8.Ngf3 Ng6 9.ba6 Na6 10.Ba6 Ra6+=; C4) 7.Bc1 Nf5 8.Nf3 Bd6 9.Bd3 Qe7 10.Qe2 Qe2+=; C5) 7.Nf3 Nf5 (7...Bf5 8.Be2 ab5 9.Bb5 c6 10.Bd3 Bd3=) 8.Bd3 ab5 9.Bb5 c6 10.Bd3 Bb4=; D) 6...Be6 D1) 7.Nf3 Ng6 (7...a6 8.Bd3 Qd7 9.a4 Ng6 10.0-0 Nf4=; 7...Nf5 8.Bd3 Bb4 9.c3 Bd6 10.0-0 0-0+=) 8.Bd3 Bb4 9.c3 Bd6 10.0-0 Nf4=; D2) 7.Nd2 a6 (7...Ng6 8.Qf3 a6 9.Bd3 Bd6 10.Ne2 ab5=) 8.Ngf3 Ng6 9.ba6 Na6 10.Bb5 c6+=; D3) 7.Qh5 g6 (7...Ng6 8.Bd3 Bf7 9.Qe2 Be7 10.Nh3 0-0=; 7...Bf7 8.Qe2 Nd7 9.Nf3 Nb6 10.a4 Nc4=) 8.Qe2 Kf7 9.Nf3 Bh6 10.Qd1 a6=; D4) 7.Be2 Ng6 (7...Nf5 8.Nf3 Bd6 9.0-0 0-0 10.Re1 Qd7=; 7...Nd7 8.Nf3 Nb6 9.0-0 Qd7 10.Ba3 Nc4=; 7...Nc8 8.Nf3 Bd6 9.0-0 0-0 10.Nbd2 a6=; 7...a6 8.Nf3 Ng6 9.0-0 Bd6 10.Re1 0-0=) 8.Nf3 Bb4 9.c3 Bd6 10.0-0 0-0=; D5) 7.Bd3 Ng6 (7...a6 8.Nf3 ab5 9.Bb5 c6 10.Bd3 Na6=; 7...Qd7 8.Nf3 a6 9.a4 Ng6 10.0-0 Nf4=; 7...Nf5 8.Nf3 Bb4 9.c3 Bd6 10.0-0 0-0+=; 7...Bd7 8.Nf3 c6 9.a4 g6 10.0-0 a6+/–) 8.Nf3 Bb4 9.Bc3 Bd6 10.0-0 Nf4=; E) 6...Ng6 E1) 7.Qf3 Bd6 8.Nd2 Be6 9.c4 0-0 10.c5 Re8+=; E2) 7.Nc3 Be6 (7...Bb4 8.Qe2 Qe7 9.0-0-0 Be6 10.Re1 Kf7=; 7...Bf5 8.Bd3 Bd3 9.Qd3 Bb4 10.Nge2 0-0=; 7...c6 8.Qh5 Be6 9.Bd3 Bf7 10.Qf3 Bd6=; 7...Qe7 8.Qe2 Qe2 9.Be2 c6 10.bc6 bc6=) 8.Nf3 Bd6 9.Bd3 Nf4 10.0-0 0-0+=; E3) 7.Nf3 Qe7 8.Kd2 Bf5 9.Ba3 Qd7 10.Bf8 Rf8+=; E4) 7.Bc1 Qe7 (7...Bb4 8.c3 Bd6 9.Qh5 f5 10.Bg5 Qd7=; 7...Bd6 8.Bd3 0-0 9.Qf3 Be6 10.Bg6 hg6=; 7...Bf5 8.Bd3 Bd3 9.Qd3 Bb4 10.c3 Bd6=; 7...a6 8.Bd3 ab5 9.Qh5 Qe7 10.Ne2 Qf7=) 8.Qe2 Bf5 9.Nc3 Qe2 10.Nge2 Bb4=.

6.Qd4 a6 7.Nc3 ab5 8.Bb5 c6 9.Be2 Nf5 10.Qd2 Bb4 11.Nf3 0-0 12.0-0 Nd7 13.a3 (13.Rfb1 Ne5+=) 13...Ba5+= 14.g4 (14.Rfd1 Nc5+=) 14...Nd6–/+ 15.Qd4 Qe8 16.h3 (16.Nb1 Ne4–/+) 16...Ne5 17.Ne5 (17.Rfb1 Ndc4–/+) 17...fe5 (17...Qe5?! 18.Bd3+=) 18.Qd1 Qe7 19.Nd5 (19.Kh2 b5–+) 19...cd5 20.Qd5 Nf7 21.Bc4 Kh8 22.f4 Bd7 (22...ef4 23.ef4 Bd7 24.Rad1 Bb6 25.Kh2–+) 23.Qd3 (23.Be5 Bc6 24.Qd4 Rfd8 25.Bg7 Kg8–+) 23...Qh4 (23...ef4 24.ef4 Rad8 25.Qd4–+) 24.Kg2 (better is 24.Qd7 Qg3 25.Kh1–+) 24...Rad8 25.Bd5 Bg4! 26.e4? (26.hg4 Qg4 Double attack) 26...ef4 (better is 26...Be6! 27.Be5 Ne5 28.fe5 Qg5 29.Kh1 Qe5 30.c4–+) 27.hg4 Qg4 28.Kf2 f3! 29.Rg1 (29.Qf3 Ng5 Double attack (29...Ng5 Decoy)) 29...Bb6 30.Bd4 Qh4 31.Rg3 (31.Kf1 Ne5 32.Bb6 Nd3 33.cd3 f2–+) 31...Ne5 (31...Ne5 32.Bb6 Nd3 33.cd3 Qh2 34.Ke3 Rd5 35.ed5 Qg3–+) 0–1. Kreutzberg,Steffen (2335) – Goerz,Peter (2415), remoteschach.de, 2006.

6.Qd4 a6 7.Nf3 Bd7 (7...Nf5 8.Qa4 c6 9.Bd3 cb5 10.Bb5 Bd7=; 7...b6 8.a4 c6 9.Bd3 Bd7 10.0-0 ab5+=; 7...c6 8.bc6 Nbc6 9.Qd2 Qb6 10.Bc3 Qc7=; 7...Be6 8.Qa4 Nc8 9.ba6 c6 10.Nd4 Bd7=) 8.ba6 Na6 9.Nc3 c6 10.Bd3 Nc5+=.

6.Qd4 c6 7.Nf3 Nf5 (7...a6 8.bc6 Nbc6 9.Qd2 Qb6 10.Bc3 Qc7=; 7...Bf5 8.c4 Be6 9.cd5 Nd5 10.Qe4 Bb4=; 7...Bd7 8.Nc3 a6 9.bc6 Nbc6 10.Qd2 Rc8=; 7...Qd7 8.Nc3 a6 9.bc6 Nbc6 10.Qd2 Qg4=) 8.Qd2 a6 9.bc6 Nc6 10.Nc3 d4=.

6.Qd4 Bd7 7.Nc3 c6 (7...Be6 8.Nf3 Nf5 9.Qd2 Bb4 10.a3 Ba5=) 8.Nf3 Nf5 9.Qd2 Bb4 10.bc6 bc6=.

6.Qd4 Nd7 7.Be2 Nb6 (7...Ne5 8.Nf3 Nf5 9.Qd2 Bd6 10.0-0 c6=; 7...a6 8.ba6 ba6 9.Nc3 c6 10.Rb1 Nf5=; 7...c5 8.Qd2 Nb6 9.Nf3 a6 10.ba6 ba6+=; 7...c6 8.Nf3 a6 9.bc6 bc6 10.0-0 Rb8=) 8.Bh5 Ng6 9.Qd3 Be6 10.Bd4 Qd6=.

6.Qd4 Be6 A) 7.Qd2 Nf5 (7...Qd6 8.Nf3 Nd7 9.Nd4 Nf5 10.Ba3 Qb6=; 7...Nd7 8.Ne2 Ne5 9.Nd4 Bg4 10.h3 Bf5=; 7...a6 8.Nf3 Nf5 9.a4 Nd7 10.Bd3 ab5=; 7...Bg4 8.Nc3 a6 9.h3 Bh5 10.Nge2 ab5=) 8.Nf3 a6 9.a4 Nd7 10.Bd3 Nc5=; B) 7.Qd1 Nf5 (7...a6 8.Nf3 Nf5 9.Nc3 Bb4 10.a3 Ba5=; 7...Nd7 8.Nf3 Nf5 9.Bd3 Nc5 10.0-0 Bd6=; 7...Ng6 8.Nf3 Bb4 9.Bc3 Bd6 10.Bd3 Qe7=; 7...Nc8 8.Nf3 Bb4 9.Bc3 Bd6 10.Nd4 Qd7=) 8.Nf3 a6 9.Nc3 Bb4 10.a3 Ba5=; C) 7.Bd3 c5 (7...Nf5 8.Qg4 Qd7 9.Qh5 g6 10.Qd1 Bb4=) 8.Qa4 Nd7 9.Nd2 c4 10.Ngf3 Nc5–+; D) 7.Ne2 c5 (7...Ng6 8.Nbc3 Bd6 9.Qd2 c6 10.Nd4 Qe7=; 7...Nf5 8.Qg4 Bd6 9.Nf4 Bf4 10.Qf4 Qd6=; 7...Qd7 8.Nf4 Nf5 9.Qd1 a6 10.Bd3 ab5=) 8.Qd2 Ng6 9.Nbc3 a6 10.ba6 Na6=; E) 7.Nf3 Nf5 (7...a6 8.Qa4 Nc8 9.ba6 c6 10.Nd4 Bd7=; 7...Ng6 8.Be2 a6 9.Qa4 c6 10.bc6 Nc6=) 8.Qd2 a6 9.a4 Nd7 10.Bd3 Nc5=.

6.Qd4 Bf5 7.c4 c6 8.Nc3 Be6 9.Rd1 Nd7 10.cd5 Nd5=.

6.Qd4 Bf5 7.c4 Be6 8.Nc3 c5 9.Qd3 dc4 10.Qe4 Qb6+=.

6.Qd4 Nf5 7.Qd2 (7.Qg4 Qe7 (7...Be6 8.Nh3 Qd7 9.Nf4 h5 10.Qf3 Nh4+=; 7...Bc5 8.Bd3 g6 9.Qe2 Nh4 10.g3 Nf5=; 7...Be7 8.Bd3 g6 9.Nd2 Ne3 10.Bg6 Kf8=; 7...Bd6 8.Bd3 g6 9.Qd1 a6 10.Nc3 Bb4=) 8.Nc3 Be6 9.Qh5 g6 10.Qe2 Nd7=; 7.Qd1 Be6 (7...a6 8.Nc3 Bb4 9.a3 Ba5 10.Nf3 Qd6=; 7...Bb4 8.Bc3 Bc5 9.Bd3 a6 10.Nf3 0-0=; 7...c6 8.Nf3 Bb4 9.Bc3 Bd6 10.Bd3 0-0=; 7...Bd6 8.Bd3 Be6 9.Nf3 c6 10.a4 Nd7=) 8.Nc3 a6 9.Nf3 Bb4 10.a3 Ba5=) 7...c5 (7...Bd6 8.Nf3= a6 9.Nc3 Be6 10.Bd3 Bb4=; 7...a6 8.Nf3 Be6 9.Bd3 ab5 10.Bb5 c6+=; 7...Be6 8.Nf3 a6 9.Nc3 Bb4 10.a3 Ba5=; 7...Bc5 8.Nc3 c6 9.Nf3 Nd7 10.Be2 Qe7=; 7...Be7 8.Nc3 d4 9.ed4 Qd4 10.Qd4 Nd4+=) 8.Ne2 (8.Nc3 d4 9.ed4 Qd4 10.Bd3 Qg4+=) 8...Be6 (8...Qd7 9.Ng3= c4 10.Nc3 Bb4+=) 9.Nf4+= Qd6 (9...Bf7 10.Bd3 Qd7+=) 10.e4 (10.Be2 Nd7+=) 10...Ne7 (10...Nd4 11.ed5 Bd5 12.Bd4 cd4 13.Qd4+= (worse is 13.Nd5 Qd5 14.c3 Bc5=)) 11.Bc4!+/– (11.Ne6?! Qe6 12.Bd3 de4=) 11...Bf7 (11...dc4 12.Qd6) 12.Nd5 Nd5 13.Bd5 Bd5 14.ed5 Be7 15.0-0 0-0 16.c4 Nd7 17.Re1 Ne5 (17...Rfe8 18.Re6 Qb8 19.Qe3+/–) 18.Na3 (18.Be5 fe5 19.Nc3 Rad8+-) 18...Rae8 19.Re4 Bd8 20.Rae1 Bc7?? (better is 20...Re7+-) 21.f4 Qe7 22.fe5 fe5 23.Nc2 Qd6 (23...Bd6 24.Be5 Be5 25.Re5 Qe5 26.Re5 Re5 27.Qd3+-) 24.Re5 1–0. Dziel,Jaromir – Unger,M, corr SOK–96–112, 1996.

6.Bd4 Nf5 A) 7.Bc3 Qd7 (7...Be7 8.Ne2 0-0 9.Nf4 c6 10.Bd3 Qd7=; 7...a6 8.Nh3 ab5 9.Bb5 c6 10.Bd3 Bd6=; 7...Be6 8.Bd3 a6 9.Ne2 ab5 10.Nf4 Qd7=; 7...Bc5 8.Bd3 a6 9.Qf3 Qd7 10.a4 Qe6=) 8.Nh3 c6 9.bc6 Nc6 10.Bb5 a6=; B) 7.Bd3 a6 8.ba6 Na6 9.Nf3 Nb4 10.0-0 Bd6+=; C) 7.Bb2 a6 (7...Be6 8.Bd3 a6 9.Nh3 Bd6 10.Nc3 Be5=; 7...Bb4 8.c3 Bc5 9.c4 d4 10.ed4 Bd4=; 7...Bd6 8.Nc3 c6 9.Bd3 Be6 10.Nf3 Nd7=; 7...c6 8.Nf3 Bb4 9.Bc3 Bd6 10.Bd3 0-0=) 8.Nf3 Bb4 9.Bc3 Bc5 10.g4 Ne7=; D) 7.c4 dc4 (7...Nd4; 7...Be6; 7...c5) 8.Bc4 Nd4 9.ed4 Bb4 10.Kf1 a6+=; E) 7.Nf3 a6 8.Bd3 ab5 9.Bb5 c6 10.Bd3 Nd4=.

5.d4 Nd7

6.c4 c6 7.Nd2 Qa5 8.cd5 =.

6.de5 Ne5 7.Nf3 Bg4 8.Be2 Qd6 9.Bd4 Bf3 10.Bf3 Nf3 11.Qf3 c5 12.bc6 bc6 13.0-0 c5 14.Bc3 Qe6 =.

6.Nf3 e4

7.Nfd2 f5

8.c4 a6 9.ba6 A) 9...ba6 10.Nc3 Rb8 11.Rb1 c6 12.Be2 dc4 13.Bc4+=; B) 9...b6 10.cd5 Nf6 11.d6 Qd6 12.Nc4 Qe6 13.Ne5+=.

8.c4 Nb6 9.c5 Nd7 10.Nc3 a6 11.Qb3 c6 12.bc6 bc6 13.Qa4+=.

8.c4 Rb8 9.Be2 A) 9...c6 10.0-0 Nf6 11.Ba3 a6 12.Nc3 ab5 13.cb5+=; B) 9...a6 10.a4 dc4 11.0-0 Ra8 12.ba6 b6 13.Bc4+=; C) 9...dc4 10.0-0 (10.Nc3 c6 11.0-0 Nd5 12.bc6 bc6 13.Nc4=) 10...Nd5 11.Nc4 a6 12.ba6 ba6 13.Nc3+=; D) 9...Ng6 10.0-0 Nf6 11.Nc3 Be6 12.Qa4 Ra8 13.f3+=; E) 9...Nf6 10.0-0 dc4 11.Nc4 Be6 12.Nc3 Ned5 13.Nd5=.

8.c4 dc4 9.a4 A) 9...a6 10.ba6 (10.Ba3 ab5 11.ab5 Nb6 12.Bc4 Ng6 13.0-0=; 10.Bc4 Nb6 11.ba6 ba6 12.Bb3 Nbd5 13.0-0=) 10...b6 11.Bc4 Ba6 12.Be6 Bd3 13.Qb3+=; B) 9...Nd5 10.Bc4 (10.a5 Qg5 11.Nc3 N7f6 12.h4 Qg6 13.Nc4=; 10.Nc3 Nc3 11.Bc3 Nb6 12.Qc2 Qg5 13.a5=) 10...N7b6 11.Bb3 Qh4 12.0-0 Bd6 13.h3=; C) 9...c6 10.Ba3 (10.Qh5 g6 11.Qh4 cb5 12.ab5 Nd5 13.Qd8=) 10...cb5 11.ab5 Nd5 12.Bf8 Nf8 13.Bc4+=; D) 9...Nf6 10.Bc4 Ned5 11.0-0 Ng4 12.h3 Nge3 13.fe3=.

8.c4 dc4 9.Bc3 Nb6 10.Nc4 Be6 11.Ne5 Qd6 12.Qc2 Ng6 13.Nd2=.

8.c4 dc4 9.Nc3 A) 9...a6 10.ba6 Ra6 11.Bc4 Rg6 12.Qb3 Rf6 13.g4+/–; B) 9...Ng6 10.Bc4 Nb6 11.Bb3 a6 12.ba6 Ra6 13.0-0=; C) 9...c6 10.bc6 Nc6 11.Nc4 Nf6 12.Ne5 Qa5 13.Bb5+=; D) 9...Nb6 10.Qh5 (10.Bc4 Nc4 11.Nc4 Be6 12.Ne5 a6 13.a4=) 10...g6 11.Qh4 Bg7 12.a4 Be6 13.a5=.

8.c4 dc4 9.Bc4 Nb6 10.Bb3 (10.Nc3 Nc4 11.Nc4 Be6 12.Ne5 a6 13.a4=; 10.Be2 Ned5 11.0-0 Qh4 12.Ba3 Ba3 13.Na3=) 10...Ned5 11.0-0 (11.a4 Qh4 12.0-0 Bd6 13.h3=) 11...Be6 12.a4 a5 13.ba6 Ra6 14.a5 Nd7 15.Bc4 Ra8 (better is 15...Ra7!?=) 16.Qb3+/– N7f6 17.Nc3 c6 18.Ba3 (18.f3 A) worse is 18...Ra5 19.Ra5 (19.Qb7 ef3 20.Nf3 Bc8 21.Qc6 Bd7+-) 19...Qa5 20.fe4+/– (20.Qb7?! ef3 21.Ra1 Qc7 22.Qa8 Qc8+=); B) 18...ef3 19.Nf3 Ra7+=) 18...Ba3 (18...Qa5 19.Bb2 Qd8 20.Nd5 (worse is 20.Qb7 Rb8 21.Qc6 Bd7 22.Bd5 Bc6 23.Bc6 Kf7+=) 20...cd5 21.Bb5 Kf7 22.Ra8 Qa8 23.Ra1+=) 19.Qa3+= Qe7 20.Bd5 Bd5 21.Rfb1 Qa3 22.Ra3 b5 23.Nd5 (23.f3 ef3 24.gf3 Be6+/–) 23...Nd5 24.Rc1 (24.a6 Ra7+=) 24...Kd7 25.Rc5 g6 (25...Ra6 26.Kf1=) 26.Ra1 Ra7 27.Nb3 Kd6 28.Rac1 Ra6 29.Kf1 Rf8 30.Ke2 Nb4 31.Ra1 Nd3 32.Rc2 f4 (better is 32...b4=) 33.Nd2+/– Kd5 34.Ne4 Ke4 35.f3 Kd5 36.Kd3 fe3 37.Ke3 Rfa8 38.Rc5 Kd6 39.Rac1 Rc8 40.Rb5 Re8 (40...cb5 41.Rc8 Ra5 42.h4+/–) 41.Re5! Re5 42.de5 Ke5 43.Rc5 Kd6 44.Kd4 Ra8 45.g3 h6 (45...Rb8!? 46.a6 Kc7+/–) 46.f4 Ra7 47.h4 Ra8 (47...Rb7 48.a6 Ra7 49.h5+-) 48.h5 Rg8 49.a6 Kc7 50.hg6 Rg6 51.Rc3 Kb6 52.Ra3 Ka7 53.Ke5 h5 (53...Rg8 54.f5 Re8 55.Kf6+-) 54.f5 Rg5 55.Ke6 c5 56.f6 (56.f6 Rg6 57.Ke7+-) 1–0. Massana,Jorge – Pettersen,L, Manhattan CC–ch, 1985.

8.c4 dc4 9.Be2 A) 9...a6 10.ba6 (10.Bc4 ab5 11.Bb5 c6 12.Be2 Nf6 13.0-0=; 10.Nc3 ab5 11.Nb5 Nd5 12.Bc4 N7b6 13.Bb3+=) 10...b5 11.a4 c6 12.d5 Nb6 13.dc6=; B) 9...Nb6 10.a4 (10.Nc4 Be6 11.Nbd2 Ned5 12.0-0 Be7 13.a4=; 10.Na3 c3 11.Bc3 Ned5 12.Qc1 Nc3 13.Qc3+=) 10...Be6 11.a5 Nbd5 12.Nc4 a6 13.ba6=; C) 9...Nd5 10.0-0 (10.Bc4 N7b6 11.0-0 Be6 12.Qh5 Bf7 13.Qe2=) 10...Be7 11.Nc3 N7b6 12.Nc4 Be6 13.Nd5=.

8.c4 dc4 9.Qh5 g6 10.Qh4 (10.Qg5 Nd5 11.Qd8 Kd8 12.a3 Be7 13.Nc3=; 10.Qd1 Nd5 11.Bc4 N7b6 12.Bb3 a6 13.ba6=) 10...Nd5 11.Qd8 Kd8 12.a3 Be7 13.Nc3=.

8.c4 Nf6 A) 9.Be2 A1) 9...Be6 10.0-0 (10.Nc3 dc4 11.Nc4 a6 12.Qa4 Ned5 13.ba6=; 10.c5 Ng6 11.0-0 Be7 12.f3 0-0 13.Nc3=; 10.Qc2 dc4 11.Nc4 Ned5 12.0-0 Be7 13.Nc3=) 10...dc4 11.Nc4 Ned5 12.Nc3 Be7 13.Ne5=; A2) 9...a6 10.ba6 Ra6 11.Nc3 Ra8 12.0-0 dc4 13.Bc4=; A3) 9...Ng6 10.Nc3 (10.0-0 Be6 11.Nc3 dc4 12.Bc4 Bc4 13.Nc4=; 10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Qg5 13.g3=) 10...Be6 11.0-0 Be7 12.Qb3 0-0 13.cd5=; A4) 9...dc4 10.Nc3 (10.0-0 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1=; 10.Bc4 Ned5 11.Nc3 Be6 12.0-0 Qd6 13.Nd5=; 10.Nc4 Ned5 11.0-0 Be7 12.Ba3 0-0 13.Be7=) 10...Be6 11.Nc4 a6 12.Qa4 Ned5 13.ba6=; B) 9.c5 Ng6 10.Be2 (10.Nc3 Be7 11.Qa4 0-0 12.Be2 f4 13.0-0=; 10.h4 f4 11.h5 fe3 12.hg6 ed2 13.Nd2+=; 10.a3 Be7 11.Be2 f4 12.0-0 0-0 13.Nc3=; 10.a4 f4 11.ef4 Nf4 12.Qb3 Be7 13.Qe3+=) 10...f4 11.0-0 Be7 12.Qb3 Be6 13.f3=.

5.d4 Ng6

6.a3 A) 6...c6 A1) 7.c4 dc4 (7...Bd6 8.bc6 bc6 9.de5 Be5 10.Be5 fe5=; 7...ed4 8.Qd4 Ne5 9.cd5 Qd5 10.Nd2 Qe6=; 7...Be6 8.cd5 cd5 9.de5 fe5 10.Nf3 Nd7=) 8.Bc4 a6 9.ba6 Na6 10.Nf3 ed4=; A2) 7.de5 fe5 8.c4 Be6 9.cd5 Qd5 10.Nc3 Qd1=; B) 6...Be6 7.de5 fe5 8.c4 c6 9.cd5 Qd5 10.Nc3 Qd1=; C) 6...Bd6 7.c4 ed4 (7...c6 8.bc6 bc6 9.de5 Be5 10.Be5 fe5=; 7...dc4 8.Bc4 ed4 9.Bd4 c5 10.Bc3 Ne5=) 8.Bd4 dc4 9.Nd2 a6 10.Nc4 ab5=.

6.c4 Bb4 7.Bc3 Bc3 8.Nc3 dc4 9.Bc4 ed4 10.Qd4 Nd7 (10...Qd4!? 11.ed4 Kd8=) 11.Rd1+/– Nb6?? (better is 11...Qe7+/–) 12.Qd8 1–0. Rosner,Dirk – Rau,Johann, CiF, 2000.

6.c4 dc4 7.Bc4 A) 7...a6 8.Qb3 Qd7 9.de5 Ne5 10.Be5 fe5 11.Nf3=; B) 7...Bb4 8.Bc3 Bd6 9.Nf3 a6 10.de5 fe5 11.0-0+=; C) 7...c5 8.Nf3 cd4 9.ed4 Bb4 10.Bc3 Qc7 11.Qb3=; D) 7...ed4 8.Qd4 (8.Bd4 c5 9.Bc3 Qd1 10.Kd1 Nd7 11.Nd2+=) 8...Bb4 9.Nd2 Qd4 10.Bd4 c5 11.Bb2=.

6.c4 c6 7.de5 fe5 8.Nf3 Bb4 9.Bc3 Bc3 10.Nc3 dc4 11.Qd8+=.

6.c4 ed4 A) 7.Bd4 Be6 8.cd5 (8.Qb3 Nh4 9.c5 Nd7 10.Qc3 c6 11.Nd2=) 8...Bd5 9.Nf3 Bb4 10.Bc3 Bc5 11.Ba5=; B) 7.Qd4 Be6 8.cd5 (8.Nc3 c5 9.Qd2 dc4 10.Qd8 Kd8 11.Rd1+=) 8...Qd5 9.Nf3 Bc5 10.Qd5 Bd5 11.Nc3=.

6.c4 e4 7.Nc3 A) 7...Be6 8.cd5 Bd5 9.a3 c6 10.bc6 Nc6 11.Qh5+=; B) 7...Bb4 8.cd5 (8.Qb3 Bc3 9.Bc3 Be6 10.Rc1 a6 11.ba6=) 8...Qd5 9.Qa4 Bc3 10.Bc3 Be6 11.Ne2=.

6.c4 Be6 A) 7.cd5 Qd5 8.Nd2 Bb4 9.de5 fe5 10.a3 Ba5 11.Ngf3=; B) 7.Nc3 B1) 7...Bb4 8.Qb3 (8.de5 Ne5 9.cd5 Bd5 10.a3 Ba5 11.Nh3=; 8.cd5 Bd5 9.a3 Ba5 10.de5 Ne5 11.Nh3=; 8.Qa4 Qe7 9.de5 Ne5 10.cd5 Bd5 11.a3=; 8.c5 0-0 9.Qa4 Bc3 10.Bc3 Nd7 11.Qc2=) 8...ed4 9.Qb4 dc3 10.Qc3 dc4 11.Bc4=; B2) 7...ed4 8.Qd4 c5 9.Qd2 dc4 10.Qd8 Kd8 11.Rd1+=; C) 7.de5 fe5 8.cd5 (8.a3 c6 9.cd5 Qd5 10.Nc3 Qd1 11.Rd1=) 8...Bd5 9.a3 Bd6 10.Nf3 a6 11.Nc3+=.

6.de5 fe5 7.c4 Be6 (7...Bb4 8.Bc3 Bc3 9.Nc3 d4 10.ed4 ed4=; 7...d4 8.ed4 Bb4 9.Nd2 ed4 10.Qe2 Ne7=; 7...c6 8.bc6 bc6 9.cd5 Qd5 10.Nc3 Bb4=) 8.cd5 Bd5 9.a3 Bd6 10.Nf3 a6=.

6.Nf3 e4 7.Nfd2 Be6 (7...a6 8.c4 Be6 9.cd5 Bd5 10.Qa4 f5+=; 7...c6 8.c4 Be6 9.Qb3 Qd7 10.Nc3 dc4=; 7...Bb4 8.c4 Be6 9.Qa4 Bd2 10.Nd2 f5=) 8.c4 dc4 9.Qc2 f5 10.Bc4 Bc4=.

6.Nf3 Bg4 7.h3 (7.de5 fe5 8.Nbd2 Bb4 9.c3 Bc5 10.h3 Bf3=) 7...Bf3 (7...Bb4 8.c3 Bf3 9.Qf3 Ba5 10.Be2 a6=) 8.Qf3 Bd6 (8...c6 9.a3= Bd6 10.c4 ed4=; 8...e4 9.Qg4 Qd7 10.Qd7 Nd7=) 9.Nd2 (9.c4 e4 10.Qf5 c6 11.bc6 bc6 12.cd5 cd5 13.Bb5 Kf8+=) 9...e4 10.Ne4 (10.Qh5 c6+=; 10.Qg4 c6=) 10...de4= 11.Qe4 Ne7 12.Qb7 Nd7 (12...Nbc6 13.Qa6 Nb4 14.Qa4=) 13.Bd3 (13.a3 Nf8+=) 13...0-0 (13...a6 14.a4 (14.ba6? Rb8–+) 14...ab5 15.ab5 (15.Bb5? Rb8 16.Qe4 c6–+; 15.Qb5? Rb8–+) 15...Ra1 16.Ba1+=) 14.Qf3 Nb6 15.0-0 Na4 16.Bc1 Qd7 (16...f5!?+/–) 17.c4 Bb4 (better is 17...a6!? 18.Qd1 ab5+-) 18.Qd1+- Nc3 (18...Nb6 19.Rb1 Ba5 20.c5+-) 19.Qb3 c5 20.Bb2 Na2 (20...Rfd8 21.Rfc1+-) 21.Ra2 Rfe8 (21...f5 22.Rd1 Qc7 23.Ra6+-) 22.Rfa1 Nc8 (22...f5 23.Be2+-) 23.Qc2 h6 (23...Nd6 24.Bh7 Kf8 25.Ra6+-) 24.Be4 (24.Be4 Re4 25.Qe4+-) 1–0. Dzieniszewski,Andrzej – Grzybek, Boleslawiec Poland, 1977.

5.Nf3 Ng6

6.d4 ed4 7.ed4 Qe7 8.Qe2 Qe2 9.Be2 Nf4+=.

6.d4 ed4 7.Qd4 c5 8.Qd2+= Be6 9.c4 (9.Nc3 a6+=) 9...dc4 10.Qd8 Kd8 11.Nbd2 c3 (11...a6 12.b6=) 12.Bc3+= Nd7 13.Bc4 Bc4 (13...Ke7 14.Bd3=) 14.Nc4+= Kc7 15.Ke2 Be7 16.Rhd1 Rhd8 17.a4 Nb6 18.Ba5 Rd1 19.Rd1 Rd8 20.Rd8 Bd8 21.Nfd2 Kd7 22.Bb6 ab6 23.f4 Ne7 24.e4 Bc7 25.Ke3 f5 26.g3 Ke6 27.Kd3 h6 28.Nf3 (28.a5 ba5 29.b6 Bd8+/-) 28...fe4 29.Ke4 Nf5 (29...Ng8 30.f5 Ke7 31.Kd3+=) 30.g4+/- Ne7 31.f5 Kf6 32.h4 h5? (32...Nc8 33.g5 Ke7 34.Kd5+/-) 33.g5+- Kf7 34.Nfe5 Ke8 (34...Kf8 35.Nb6! Bb6 36.Nd7 Kf7 37.Nb6+-) 35.f6 gf6 36.gf6 Nc8 (36...Kf8 37.fe7 Ke7 38.Ng6 Kd7 39.Nf4+-) 37.Kd5 (37.Kf5 Bd8 38.f7 Ke7 39.Kg6+-) 37...Be5 (37...Bd8 38.Ke6 Bf6 39.Kf6 Kd8+-) 38.Ne5 Kf8 (38...Kd8 39.Ke6 Na7 40.f7 Nc8 41.f8Q Kc7 42.Qf4 Nd6 43.Nd7 Kd8 44.Qd6 Ke8 45.Nf6) 39.Ke6 White prepares the advance f7 39...Ke8 (39...Kg8 40.f7 Kg7 41.Nd7 Kh7 42.f8Q Nd6 43.Nf6 Kg6 44.Qg8 Kh6 45.Qg5) 40.f7 Kd8 41.f8Q (41.f8Q Kc7 42.Qf4 Nd6 43.Nd7 Kd8 44.Qd6 Ke8 45.Nf6) 1-0. Osmak,Iulija (2425) - Buksa,N (2410), Women's Speed Chess Q4 KO, 2021.

6.d4 ed4 7.Qd4 Bd6 8.c4 Bb4 (8...Ne5 9.Qd5 c6 10.Qe4+/–) 9.Bc3 Bc3 (9...c5 10.Qd5 Qa5 11.Bb4 Qb4 12.Nbd2+/–) 10.Nc3 Be6 (10...dc4!? 11.Qc4 c6+/–) 11.cd5+- Bf7 12.Bd3 0-0 13.0-0 Nd7 14.Rad1 (14.Bg6 Bg6 15.Rfc1 Qe8+-) 14...Nde5 (14...Nge5 15.Ne5 fe5 16.Qg4+-) 15.Ne5 Ne5 16.Bf5 Qe7 (16...a6 17.ba6 Ra6 18.Qb4+-) 17.Qe4 (better is 17.a4+-) 17...Rfd8? (better is 17...Bg6+-) 18.f4 Ng6 (18...g6 19.Bh3+- (19.fe5?! gf5 20