2.Bb2 g6?? 3.Bh8 f6 4.a3 Kf7 5.d4 Nh6 6.e4 Kg8 7.Bf6 Qf6 8.e5 Qf4 9.Nc3 Ng4?? (9...Nc6 10.Nf3 d5+-) 10.Nh3 Qf5 11.Bd3 Qh5 12.Be2 Qh3 (12...Qh4 13.Bg4 d6+-) 13.gh3 Nh6 14.h4 d5 15.h5 g5 16.h4 (better is 16.Qd2 Be7+-) 16...Nf7 17.hg5 Ng5 18.Rg1 h6 19.f4 Be7 20.fg5 Bg5 21.Qd3 Kh8 (21...Nd7 22.Qg6 Kf8 23.Rf1 Bf6 24.ef6 Nf6 25.Rf6 Ke7 26.Qg7 Kd6 27.Nb5 Kc6 28.Qc7) 22.Qg6 Nc6 (22...a6 23.Bd3 Bh4 24.Ke2 Nc6 25.Qh6) 23.Rg5 hg5 24.h6 Nd4 25.Qg7 1–0. Fritz11 – jumbo, casual, 2013.

3.a3?? Qb2 4.Nc3 a5?? 5.Ra2 (5.Rb1 Qa3 6.Nb5 ab4 7.Na3 ba3+=) 5...Qa2= 6.Na2 ab4 7.Nb4 Ra3 8.Nd3 Nf6 9.e3 Be7 10.Nf3 0-0 11.Be2 Nc6 12.0-0 b6 13.Qb1 Bb7 14.Qb2 Rfa8 15.Nfe5 Ra2 16.Qc3?? (16.Qc1 Ne5 17.Ne5 d6-/+) 16...Nd5 (better 16...Ne4 17.Qc4 R2a4-+) 17.Nc6?? (better 17.Qb3-/+) 17...Nc3-+ (17...dc6?! 18.Qb3-/+; 17...Bc6?! 18.Qb3 Bf6 19.Qb1-/+) 18.Ne7 Kf8 19.dc3 Ke7 (19...Rc2!? 20.Ng6 hg6 21.Re1-+) 20.Nb4 Rb2 21.Rd1 (21.Rc1 Ra3 22.Nd3 Rba2-+) 21...c5 22.Bb5 (22.Nd3 Rc2 23.Bf1 Rc3-+) 22...d5 23.Nd3 (23.Bd3 cb4 24.cb4 Ba6-+) 23...Rb5 24.e4 (24.f3 Ra2 25.Ne1 Rba5-+) 24...de4 25.Ne5 Bc8 (25...Rd8 26.Re1-+) 26.Nc6 (26.Nc4 f6-+) 26...Kf6 27.g4 g5 28.Kg2 (28.h4 gh4 29.Kh2 Rb2-+) 28...Rb2 29.Kg3 (29.h4 Rc2 30.hg5 Kg5-+) 29...h6 (29...Rc2 30.h4 Rc3 31.Kh2 gh4 32.Rb1-+) 30.h4 (30.Rd2 Ra3 31.Nb8 Rc3 32.Kg2 Rcc2 33.Rc2 Rc2-+) 30...Bb7 (30...Rc2 31.hg5 hg5 32.c4-+) 31.Nd8 (31.hg5 hg5 32.Nd8 Bd5-+) 31...Bd5 32.c4 gh4 33.Kh4 Rd8 34.cd5 Rd5 35.Ra1 Rc2 36.Ra8 Rf2 37.Rh8 Rh2 (37...Ke5 38.Kg3 Rf3 39.Kh4 e3 40.Ra8 Rd1 41.Ra1 Ra1 42.g5 Ra4 43.Kh5 Rh3) 38.Kg3 Rh1 (38...e3 39.Ra8-+) 39.Kg2 Rdd1 (39...e3 40.Kf3 Rh3 41.Kg2 e2 42.g5 Rg5 43.Kh3 e1Q 44.Rh6 Ke7 45.Kh2 Qf2 46.Kh3 Qg3) 40.Rb8 Rdg1 41.Kf2 Rg4 42.Rb6 Rh5 (42...Rh2 43.Ke3 Kf5 44.Re6 Rg3) 43.Rb5 (43.Ra6 Rh2 44.Ke3 Kf5 45.Re6 Rg3) 43...Rhg5 (43...Rh2 44.Ke3 Rg3 45.Kf4 Rc3 46.Kg4 h5 47.Kf4 Rh4) 44.Ke3 (44.Ke2 Rg2 45.Ke3 R5g3 46.Kf4 Rf3 47.Ke4 Rc3 48.Kf4 h5 49.Rc5 Rg4) 44...h5 (44...Rg3 45.Ke2 Rg2 46.Ke3 R5g3 47.Kf4 Rf3 48.Ke4 Rc3 49.Kf4 h5 50.Rc5 Rg4) 45.Ke2 h4 (45...Rg2 46.Ke1 Ra2 47.Kf1 e3 48.Ra5 Rf2 49.Ke1 Rg1) 46.Ke3 (46.Rb6 Rg2 47.Kd1 Rh2 48.Re6 Ke6 49.Ke1 Rg1) 46...h3 (46...Rg3 47.Kf2 Rg2 48.Ke1 Ra2 49.Kf1 e3 50.Ra5 Rf2 51.Ke1 Rg1) 47.Ke2 (47.Rb2 Rg3 48.Ke2 h2 49.Rb1 Rg2 50.Ke3 Ke5 51.Rf1 R5g3 52.Rf3 Rf3) 47...h2 48.Rc5 (48.Rb1 Rg2 49.Ke3 Ke5 50.Rf1 R5g3 51.Rf3 Rf3) 48...Rc5 49.Ke3 (49.Kd2 h1Q 50.Ke2 Rc2 51.Ke3 Qg1) 49...Rcg5 (49...h1Q 50.Kd2 Qc1 51.Ke2 Rg2) 50.Ke2 Kg6 (50...Kg6 51.Kf2 Rg3 52.Ke2 Rf3 53.Ke1 h1Q 54.Ke2 Rg2; 50...h1Q 51.Kd2 Qf3 52.Ke1 Rg1 53.Kd2 R5g2) 0-1. javirod1983 (2335) - zsolti_83 (2375), Rated Bullet game, lichess.org, 2017.

3.Bf6+- Be7 4.a3 Bf6 5.Nc3 Bc3 6.dc3 d6 7.Nf3 Bd7 8.e3 Nc6 9.Be2 Nf6 10.0-0 0-0-0 11.b5 a6 (11...Ne7 12.a4+-) 12.bc6 Bc6 13.Nd4 Be4 14.Rb1 Bc2 (14...e5 15.f3 Bg6+-) 15.Qc2 Nd5 16.Qb3 Nb6 17.a4 a5 18.Qb5 (18.Nb5 Rd7 19.Nc7 Rc7 20.Qb6 d5+-) 18...Kb8 19.Bf3 (19.Nc6!? Kc8 20.Nd8 Rd8 21.Qa5 Rd7+-) 19...d5 20.Qa5 Rd6 21.Nb5 Rc6 22.Qa7 Kc8 23.a5 Kd7 24.ab6 Rb6 25.Nc7 Kc7 26.Qb6 Kb8 (26...Kd7 27.Qb7 Kd6 28.Rb6 Ke5 29.Qf7 Rb8 30.Qe6) 27.Qb7 1-0. FeegLood (2730) - alexr22, lichess.org, 2017.

3.Bf6+- gf6 4.b5 Nc6 5.bc6 dc6 6.e4 Nh6 7.Nf3 e5 8.d4 Bg4 9.de5 (9.h3 Be6+-) 9...fe5 10.Be2 Rd8 (10...Bf3 11.Bf3 Rg8 12.Qd2+-) 11.Qc1 f5 (11...Bf3 12.Bf3 Bg7 13.Qa3+-) 12.Ne5 (better is 12.ef5 Rd5+-) 12...fe4 (12...Be2 13.Ke2 Bg7 14.c3+-) 13.Ng4 Bc5 14.Qh6 e3 15.Nf6 Kf7 16.Bh5 Ke6 (16...Ke7 17.Qg7 Ke6 18.Bg4 Kd6 19.Ne4 Kd5 20.Qg5 Ke4 21.Bf3 Kd4 22.Qf4) 17.Nh7 Ke7 18.Qf6 Kd7 19.Bg4 Ke8 20.Qe6 Be7 21.Bh5 1–0. DEFFM – GuestYWJB, freechess.org, 2018.

3.Bf6+- gf6 4.c3 c5 5.bc5 Bc5 6.e3 Nh6 7.Nf3 f5 8.Be2 Ng4 9.0-0 f4 10.ef4 Bf2 (10...d5 11.f5! Nc6 12.fe6 Be6 13.Qa4+-) 11.Rf2 b6 (11...Nf2 12.Kf2 Nc6 13.Na3+-) 12.Rf1 Bb7 13.d4 (13.Nd4 Nh6+-) 13...Na6 (13...Ne3 14.Qc1 Nf1 15.Qf1+-) 14.Ba6 d5 (14...Ba6 15.Re1 Nf6+-) 15.Bb7 Rc8 16.Bc8 0-0 17.Ba6 (17.Ne5 Ne3 18.Qh5 Nf5 19.Qg5 Kh8 20.Qf6 Kg8 21.Nf7 Rf7 22.Be6 Nd6 23.Bf7 Nf7 24.Re1 Ne5 25.Re5 h6 26.Re8 Kh7 27.Qf7) 17...Kh8 18.Bd3 Rg8 19.Nbd2 (19.Ng5 f5+-) 19...f6 20.Ne5! f5 (20...fe5 21.fe5 Decoy) 21.Ng4 Rg4 22.Rf2 Rg8 23.Nf3 e5 24.de5 a5 25.Qc2 b5 26.a3 (26.Bb5 Rf8 27.e6 Kg7+-) 26...d4 27.cd4 b4 28.ab4 ab4 29.Rb1 (29.Qc6 Rg6 30.Qc7 Rg8 31.Bf5 Rg2 32.Kg2 b3 33.Qh7) 29...b3+- 30.Qb3 h5 (30...Rc8 31.Qe6 Rf8 32.Qe7 Rc8 33.Rb8 Rb8 34.Qf6 Kg8 35.Bc4) 31.Qb8! Rb8 (31...Rb8 32.Rb8 Mate attack) 32.Rb8 Kh7 (32...Kg7 33.Rb7 Kg6 34.Nh4 Kh6 35.Nf5 Kg6 36.Rg7) 33.Rb7 Kh6 (33...Kg6 34.Nh4 Kh6 35.Nf5 Kg6 36.Rg7) 34.Ng5 (34.Bf5 h4 35.Rh7) 34...h4 (34...Kg6 35.Rfb2 h4 36.R2b6 Kh5 37.Be2) 35.g3 (35.Bf5 Kh5 36.Rh7) 35...hg3 36.hg3 (36.Bf5 gf2 37.Kf2 Kh5 38.Rh7) 36...Kh5 (36...Kg6 37.g4 Kh6 38.Rh2 Kg6 39.Bf5) 37.Kg2 (37.Kg2 Kg6 38.g4 Kh6 39.Rh7 Kg6 40.Bf5; 37.Bf5 Kh6 38.Rh2) 1–0. Fournier,Frederic (1975) – ipafla (1665), Active, 2009.

3.Bf6+- Nf6 4.c4 Nc6 5.a3 Nd4 6.e3 Nc6 7.Nf3 b6 (7...Be7 8.d4+-) 8.d4 Bb7 9.Nc3 e5 (9...Be7 10.Bd3+-) 10.de5 (10.b5 Na5 11.de5 Ng4+-) 10...Ng4 11.Nd5 (11.Nb5 0-0-0+-) 11...Kd8 (11...0-0-0 12.Nd4 Nce5 13.f4 Bd5 14.cd5 Ne3 15.Qa4+-) 12.Be2 Nge5 13.Ne5 Ne5 14.0-0 Bd5 (14...g5+-) 15.Qd5 c6 16.Qe5 f6 17.Qd4 Kc7 18.Rfd1 Rd8 19.Bg4 c5 20.Qf4 (20.Qd5 d6 21.Qf7 Kb8 22.Bf3 d5 23.Rd5 Be7 24.Qe7 Rd5 25.Bd5 Kc8 26.Qb7 Kd8 27.Bf7 cb4 28.Rd1) 20...Kb7 21.Bd7 Be7 22.Qe4 Kb8 23.Qe7 Rdf8 (23...a6 24.Qd6 Kb7 25.Qc6 Ka7 26.Qc7 Ka8 27.Bc6) 24.Bc6 Re8 (24...Rf7 25.Rd8 Rd8 26.Qd8) 25.Qb7 1-0. Mr_Penings (2740) - Kushian_12, 2024 Summer Marathon, lichess.org, 2024.

3.ba5 Ra5 (--> 1.b4 a5 2.ba5 Ra5 3.Bb2 e6).

3.ba5 c6 4.c4 Qa5 5.e3 Bb4?? (better 5...d5=) 6.Bg7+- f6 (6...Nf6 7.Bh8 Qe5 8.Nc3 Bc3 9.Nf3+-) 7.Bh8 (better 7.Qc2+-) 7...d5 (7...Qe5 8.Nc3! Bc3+-) 8.Qh5 Ke7 (8...Kd8 9.Qh7 Ne7 10.Bf6+-) 9.Qh7 Kd6 10.Qg8 Bd7 11.Qf8 (better 11.Bf6 c5 12.Be5 Kc6 13.cd5 Kd5 14.Bb8+-) 11...Ke5 12.Bf6 Ke4 (12...Kf5 13.Bd3 Kg4 14.Qg7 Kh5 15.g4) 13.f3 Kf5 14.Bd4 (14.Bd3) 14...Kg6 (14...Bf8 15.Bd3 Kg5 16.Nh3 Kh6+-) 15.Qf6 Kh7 16.Qg7 1-0. ClayPigeons (2085) - vit1977 (1940), Rated Bullet game, lichess.org, 2019.

3.b5 d6 4.e3 Bd7 5.Nf3 c6 6.a4 cb5 7.Bb5 Nf6 8.0-0 Be7 9.d4 0-0 10.Nbd2 Qb6 11.c4 d5 12.c5 Qd8 13.Qb3 Nc6 14.Rfc1 Ng4 15.h3 Nh6 16.Qd3 f5 17.Ne5 Ne5 18.de5 Rc8 19.Nb3 g5 20.f4 gf4 21.ef4 Kh8 22.Bd4 Rg8 23.Rc2 Bh4 24.Qf3 Rg3 25.Qh5 Rb3 26.Qh6 Bb5 27.ab5 Rb5 28.Qe6 Rc6 29.Qf5 Rg6 30.g4 Rb3 31.e6 Bf6 32.Bf6 Rf6 33.Qe5 Kg8 34.g5 Rg6 35.Kh2 Rb4 36.Ra5 Qa5 37.e7 1–0. Orang4Utan (1690) – varicocha (1845), lichess.org, 2017.

3.b5 f5 4.a4 Nf6 5.e3 Be7 6.c4 0-0 7.Nf3 d6 8.Be2 e5 9.0-0 Be6 10.d4 e4 11.Nfd2 Nbd7 12.f3 Qe8 13.fe4 fe4 14.Nc3 Qg6 15.Qc2 Can e4 get defended? 15...Bh3 (15...d5!? 16.cd5 Bd5 17.Nd5 Nd5 18.Qe4 Qe4 19.Ne4 Ne3 20.Rf8 Rf8+=) 16.Rf2+/- Nd5?? (better 16...Rae8+/-) 17.Nd5+- (17.cd5?! Rf2 18.Kf2 Qg2 19.Ke1 Qh1 20.Nf1 Bf1 21.Bf1 Rf8=) 17...Bh4 (17...Bg5 18.Rf8 Rf8 19.gh3+-) 18.Rf8 Rf8 19.Qe4 Rf2 (19...Qe4 20.Ne4 Bf5 21.Bf3 Be4 22.Be4 Bf2 23.Kh1+-) 20.Qg6 (better 20.Ne7 Be7 21.Qg6 hg6 22.Kf2 Be6+-) 20...hg6 21.gh3 Re2 22.Rd1 c6 23.bc6 bc6 24.Nf4 (24.Nc3 Re3 25.d5 c5+-) 24...Re3 (24...Bf2 25.Kf1 Rd2 26.Rd2 Be3 27.Bc3 Bf4 28.Rb2+- (28.Ba5?! Bd2 29.Bd2 Nb6+/-)) 25.Nf1 White prepares the advance d5 (better 25.d5!? c5 26.Ng2 Rh3+-) 25...Rb3 26.Bc1 Nf6?? (26...Rb4 27.Ng6 Bf6+-) 27.d5 (27.Ng6 Rh3 28.Kg2 Rc3 29.Nh4 Rc4+-) 27...c5 (27...cd5 28.Ng6 (28.cd5?! Rb4+-) 28...Rh3 29.Kg2+-) 28.Ng6 Rh3 29.Nh4 (better 29.Kg2 Rc3 30.Nh4 Rc4+-) 29...Rh4 30.Ng3 (better 30.Ne3+-) 30...Rc4 31.Rf1 (better 31.Bg5!?+-) 31...Nd5 32.Bg5 (32.Nf5!?+/-) 32...Ra4= 33.Bd8 Ra2 34.Nf5 a4 35.Nd6 Ne3 36.Nc4?? (36.Re1 Rg2 37.Kh1+/-) 36...Nf1-+ 37.Kf1 Rc2 38.Ne3 Rh2 (38...Rc1 39.Ke2 a3 40.Bc7-+) 39.Ng2 (39.Bb6 Rh5 40.Nc4-+) 39...a3 40.Kf2 (40.Bc7 Rh5 41.Ba5 Rh1 42.Ke2-+) 40...Rg2! 41.Kg2 a2 42.Be7 (42.Bb6 a1Q 43.Bc5 Qd1-+) 42...a1Q (better 42...c4 43.Bg5-+) 43.Bc5 Qb2 44.Bf2 Qc3 45.Kf1 Qd3 46.Kg1 g5 47.Kh2 g4 48.Bg1 (48.Kg2 Qh3 49.Kg1 g3-+) 48...Qf3 (48...Qh3) 49.Bc5 Kf7 50.Kg1 Ke6 51.Bf2 Kd5 52.Kf1 (52.Bb6 Ke4 53.Bc5 Qg3 54.Kf1 Kf3 55.Bd4 Qg2 56.Ke1 Qe2) 52...Ke4 53.Ke1 (53.Kg1 Qh3 54.Bc5 Kf3 55.Bd4 Qg2) 53...Kd3 (53...Qd3 54.Bg1 Kf3 55.Bd4 Qe2) 54.Bg3 (54.Kf1 g3 55.Kg1 Qf2 56.Kh1 Qf1) 54…Qe2 0-1. Ligonazo (2320) - IMaDale (2490), Rated bullet game, lichess.org, 2021.

3.b5 f6 (--> 2.Bb2 f6 3.b5 a5).

5.Ba1 c6 6.Nf3 Na6 (6...Nf6 7.b5=) 7.b5 Nc5 8.e3 cb5 (8...d5 9.Nc3+=) 9.Bb5 Nf6 10.0-0 Nce4 11.d3 (11.Nc3 Nc3 12.Bc3 Be7+=) 11...Nd6 12.Ba4 b5 13.Bb3 Bb7 14.Nbd2 (14.e4 Ng4+=) 14...Nf5 (14...b4 15.Be5=) 15.e4 Nh6 16.Nd4 Nfg4 (16...b4 17.c4+=) 17.Nb5 (17.h3 Nf6 18.Nb5 Bb4+-) 17...Rg8 (better 17...Qb8!? 18.g3 Ba6+-) 18.h3+- Qh4? (better 18...Nf6+-) 19.hg4 Ng4 Threatening mate... how? 20.Nf3 Qh5 21.Nc7 (better 21.Ba4+-) 21...Kd8+- 22.Nb5 (better 22.Qd2 Bd6 23.Ne6 fe6 24.Qg5 Qg5 25.Ng5 Bh2 26.Kh1+-) 22...Bc6?? (better 22...Ke8=) 23.Nbd4+- Bd6 24.Nc6 dc6 25.d4 (better 25.g3+-) 25...Bh2= 26.Kh1 Bg3 27.Kg1 Bh2 28.Kh1 Bf4 29.Kg1 Nh2?? (better 29...Bh2 30.Kh1=) 30.g3 (better 30.Ne5 Qh4 31.Re1+- (31.Nf7?! Ke8 32.Re1 Kf7+-)) 30...Nf1 31.Qf1?? (better 31.Kf1 Bc7 32.Ba4+-) 31...Qf3= 32.gf4 Qf4 (32...Qg4 33.Kh1 Qh5 34.Kg2 Qg4 35.Kh1 Qh5 36.Kg1 Qg4 37.Qg2 Qd1 38.Qf1 Qg4=) 33.Qg2 (33.Qe1 Qg4 34.Kf1 Kd7+=) ½–½. aravind555 – Marko31, lichess.org, 2018.

5.Ba1 Nf6 6.b5 c6 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 c6).

4.a3 c6 5.e3 d5 6.c4 Nf6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4 a4).

4.a3 f5 5.d3 Nf6 6.Nd2 b6 7.e4 fe4 (7...Bb7 8.ef5 ef5 9.Qe2 Kf7 10.Nc4=) 8.de4+= Bc5 9.e5 Nd5 10.Ne4 0-0 11.Nc5 bc5 12.Nf3 c6 13.Bd3 (better 13.c4!? Nf4 14.Rc1+=) 13...cb5=+ 14.h4 (14.0-0 b4=+) 14...h6 15.Ng5? (better 15.0-0!?=+) 15...Bb7 (better 15...hg5 16.hg5 Kf7-+) 16.Qg4? (better 16.Ne4 c4 17.Be2 Qa5 18.Qd2-+) 16...Qa5 (16...hg5?! 17.hg5 Qa5 18.c3-+) 17.c3 Qc7 (17...Nc3 18.0-0 hg5 19.Qh5-+) 18.Nf3 Nf4 19.Bc2 (19.Bf1 c4-+) 19...Bf3 (better 19...Ng2 20.Qg2 Bf3-+ (20...Rf3?! 21.0-0-0-+)) 20.Qf3 Qe5 21.Kf1 Nc6 22.Re1 Qd5 23.Qg4?? (23.Qd5 Nd5 24.Be4-+) 23...Ne5 (better 23...Qa2 24.Re2 h5 25.Qf3-+) 24.Qg3 (24.Re5 Qe5 25.g3-+) 24...Qc4 25.Kg1 Ne2 26.Re2 Qe2 27.c4 Qc2 (better 27...Ng4 28.f3 Qc2 29.fg4 Qb2 30.cb5 Qb5-+) 28.Be5 Rf7 29.Kh2 (29.cb5 Ra5-+) 29...Qc4 30.f4 Qe4 31.Rd1 d5 32.Re1 Qf5 33.Qf3 h5 34.Rg1 Qe5! 35.fe5 0-1. is_er_nog_hoop (2530) - pekowitsch (2540), 1e klasse zondag Team Battle, lichess.org, 2021.

4.a3 f6 5.c4 e5 6.e3 c5 7.Nf3 d5 8.d4 cd4 9.ed4 e4 10.Nfd2 Bf5 (10...f5!?+=) 11.Nc3+/- Ne7 12.Na4 Nd7 13.Nc3 Nb6 14.c5 Nbc8 15.a4 Ng6 (15...g6 16.b6+-) 16.Be2 (16.Qb3!? Be6+-) 16...Be7 17.0-0 h5 (17...Nf4 18.Re1+-) 18.Qb3 (18.Bh5!? Kf8+-) 18...Nf4 19.Rfe1 Be6 20.Nce4 (better 20.Bf1 f5 21.b6+-) 20...de4= 21.Bc4 (21.Qg3 Qc7 22.Ne4 Ne2 23.Re2 Qg3 24.Ng3 Kf7+=) 21...Bc4=+ 22.Nc4 Qd5 23.Qg3 (23.Qe3!? g5 24.Qe4 Qc4 25.Qb7=) 23...g5 (worse 23...Qc4 24.Qf4 Ra4 25.Ra4 (worse 25.Re4 Ra1 26.Ba1 b6-/+) 25...Qa4 26.Qc7= (worse 26.Qe4 Qb5 27.Rb1 0-0=+)) 24.Ne3 (24.Qc3 Nd3 25.Red1 Rh6=+) 24...Qd7 (better 24...Qb3 25.Nd1 Qc4-/+) 25.h4? (25.Nd1!? f5 26.c6=+) 25...Rg8 (25...Nd3 26.hg5 Rg8 27.Qh4 Rg5 28.Qe4 Nb2 29.d5 Na4 30.c6 bc6 31.dc6=+) 26.c6? (better 26.Nc4!? Qe6 27.Ne3-+) 26...bc6-+ 27.bc6 Qc6 28.d5 (28.hg5 Nd3 29.Qh4 Ne1 30.Qh5 Kd8 31.Re1 Rg5 (31...Ra4?! 32.gf6 Bd6 33.d5-/+; 31...Qa4?! 32.gf6 Bd6 33.d5-/+) 32.Qh8 Qe8 33.Qe8 Ke8-+) 28...Nd5 (28...Qb7!? 29.Nd1 f5 30.a5-+) 29.Nf5 Nf4 (29...Qb6 30.Bc1 Qb4 31.Rd1-+) 30.Rac1 (30.Qb3 Rg6 31.Rac1 Qd5 32.Qd5 Nd5 33.Re4 Kf7-+) 30...Qd7 (better 30...Qe6!? 31.Nd4 Qa2 32.Qc3-+) 31.Ne7 Qe7 (31...Ne7 32.Bf6 Ra4 33.Qb3 gh4 34.Qb8 Kf7 35.Qf4-+) 32.Rc4? (32.Bf6 Qf6 33.Re4 Ne7 34.hg5 Rg5 35.Qf4 Qf4 36.Rf4 Re5-/+) 32...Nd6 (better 32...f5!? 33.Qb3 Rg6 34.Qb5 Qd7 35.Qe5 Qe6 36.Qb5 Kf8 37.Rd4-+) 33.Ba3 f5 (33...Qe6 34.Rc6 Rd8 35.Bd6 Rd6 36.Rd6 Qd6 37.Re4 Kd7 38.Qf3-+) 34.hg5 Nd3 (better 34...Qg5!? 35.Bd6 Qg3 36.fg3 Nd3-/+) 35.Bd6=+ Qg5 36.Ree4 fe4 37.Re4 Kd7 38.Re7?? (38.Qh3 Kc6 39.Rc4 Kb6 40.Qf3=+) 38...Qe7-+ 39.Qd3 Qe6 (39...Qd6 40.Qh7 Kc6 41.Qh5 Ra4 42.Qf3 Kb6 43.Qe3 Kc7 44.Qc1 Kd8 45.Qe1 Qd5 46.f3 Qf3 47.Qd2 Ke7 48.Qe1 Kf7 49.g3 Ra1 50.Qa1 Rg3 51.Kh2 Qg2) 40.Bg3 Ke8 41.a5 (41.Qb5 Ke7-+) 41...Qe1 (41...Ra5 42.Qb1 Rc5 43.Qb8 Qc8 44.Qb2-+) 42.Kh2 Qe7 (better 42...Ra5!? 43.Qd6-+) 43.a6?? (better 43.Qd5!? Ra5 44.Qa5=+) 43...Kf7 (43...Rg5 44.Bf4 Rg7 45.Bh6 Qh4 46.Kg1-+) 44.Qd5?? (better 44.Qh7 Kf8 45.Qf5 Kg7 46.Be5 Kh6 47.Bf4 Rg5 48.Bg5 Qg5 49.Qe6 Kg7 50.Qd7 Kh8 51.Qd6-+) 44...Qe6 45.Qh5 (45.Qb7 Kg6 46.a7-+) 45...Qg6 (better 45...Kf6-+) 46.Qd5= Kg7 47.Be5 Kh7?? (better 47...Kh6 48.Bf4 Kh7 49.Qb7 Qg7 50.Qe4 Qg6 51.Qb7 Qg7 52.Qe4 Qg6 53.Qb7=) 48.g3?? (48.Qb7 Kh6 49.Bf4 Kh5 50.Qd5 Kg4 51.Qf3 Kf5 52.Bb8 Ke6 53.Qc6 Ke7 54.Qb7 Kf8 55.Qb4 Kg7 56.Qb2 Kh6 57.Bf4 Kh7 58.Qb7 Qg7 59.Qe4 Qg6 60.Qb7 Qg7 61.Qe4 Qg6 62.Qb7=) 48...Qh6 (better 48...Rge8 49.Qd7 Kg8 50.Qd5 Qf7 51.Qf7 Kf7-+) 49.Kg2=+ Qg6?? (49...Ra7 50.Bd4 Rga8 51.Ba7 Ra7 52.Qe4 Qg6 53.Qh4 Kg8 54.Qc4 Qf7 55.Qc8 Kg7 56.Qg4 Kf8 57.Qc8 Ke7 58.Qc5 Kd8 59.Qd6 Qd7 60.Qb6 Kc8 61.Kh2-/+) 50.Qd7 (better 50.Qb7 Rg7 51.Qa8+-) 50...Kh6?? (50...Rg7!? 51.Bg7 Qg7 52.Qf5 Qg6 53.Qd7 Kh8 54.Qd4 Qg7=+) 51.Qh3 (better 51.Bf4 Qg5 52.Qe6 Kh5 53.Bg5 Rg5 54.f3+-) 51...Qh5= 52.Qe6 (52.Bf4!? Kg6 53.Qe6 Kg7 54.Be5 Kh7 55.Qe7 Kg6 56.Qf6 Kh7 57.Qe7 Kh6 58.Bf4 Kg6 59.Qe6 Kh7 60.Qe7 Kg6 61.Qe6=) 52...Rg6-/+ 53.Bf4 Kh7 54.Qf7 Kh8 55.Be5 Rf6?? (better 55...Qe5 56.Qg6 Ra7-/+) 56.Bf6 1-0. jhonores (2220) - markomarkovictangens (2200), Hourly SuperBlitz Arena, lichess.org, 2020.

4.e3 a3 5.Bc3 d5 6.d4 Nd7 7.Qd2 (7.Nf3 Ngf6=) 7...Nb6 (7...Ngf6 8.Bd3=+) 8.Bb4= Bb4 9.Qb4 Bd7 10.Na3 Ne7 (10...Ra4 11.Qb2=) 11.Nb1 0-0 12.a4 c6 13.a5 (13.Ra3 Nc4 14.Bc4 dc4+=) 13...Nc4 (13...cb5!? 14.Bb5 Bb5 15.Qb5 Nc4=) 14.Bc4+= dc4 15.Qc4 (15.b6 Nd5 16.Qc4 Nb6+=) 15...cb5 (15...Ra5 16.Qc3 Rb5 17.Nf3=) 16.Qb4 (16.Qc3 Nc6+=) 16...Bc6 (16...Nc6 17.Qc3=) 17.Nf3+= Nd5 18.0-0?? (better 18.Qd2+=) 18...Nb4-+ 19.c3 Nd3 (better 19...Nc2!? 20.Ra2 Bf3 21.gf3 Qg5 22.Kh1-+) 20.Nbd2 e5 (20...Ra5 21.Rab1-+) 21.Rfb1 (21.de5 Ra5 22.Rad1 Ra2-+) 21...Bf3 (21...Ra5 22.de5 Bf3 23.Nf3 Ra1 24.Ra1-+) 22.Nf3 e4 (22...Ra5!? 23.Ne1 Ra1 24.Ra1 Ne1 25.Re1-+) 23.Ne1 (23.Nd2 Qd5-+) 23…Qc7 0-1. fishissushi (1935) - dExta (1920), Rated Bullet game, lichess.org, 2020.

4.e3 a3 5.Bd4 b6 6.Nf3 c6 7.Ne5+= Bc5? 8.Nc6!+- dc6? 9.Bg7 Nf6 10.Bh8 Kf8 11.Qf3 Be7 12.bc6 Kg8 13.c7! (13.c7 Qc7 14.Bf6 Bf6 15.Qf6 Qc2 16.Qd8 Kg7 17.Nc3+-) 1–0. Bonetti,Shane – guest672, ICC, 2002.

4.e3 f6 5.Bd3 a3 6.Bc3 e5? 7.Qh5+- g6 8.Bg6! Ke7 9.Na3! Bg7 10.Bd3 d6 11.Nc4 Qe8 12.Qf3 Qd8 13.Ne2 h5 14.Ng3 Bg4 15.Qb7 Nd7 16.Bb4 Rb8 17.Qd5 Be6 18.Nf5 Kf7 19.Ncd6! cd6 20.Nd6 Ke7 21.Qe6! Ke6 22.Bc4 Ke7 23.Nf5 Ke8 24.Ng7# 1–0. wyssy – ante, internet, 2011.

4.e3 Nf6 5.a3 b6 6.Nf3 Bb7 7.d4 Be7 8.c4 0-0 9.Nc3 d6 (9...Ne4 10.Na4 Bh4 11.g3+= (11.Nh4? Qh4 12.g3 Ng3-+)) 10.Na4 Ne4 (10...c6 11.Nc3+/-) 11.Be2 Bf6 (11...d5 12.Qc2+/-) 12.Nc3 Nc3 13.Bc3 c5 14.0-0 Nd7 15.Qb3 (15.Qc2 cd4 16.ed4 Qc7+/-) 15...Qc7 16.Qb2 Rfc8 17.h3 (17.Rfd1 cd4 18.Bd4 e5+=) 17...Ra4 (17...cd4 18.Bd4 e5 19.Bc3=) 18.Nd2+= Rca8 19.Bd1 R4a7 20.a4 (20.Bc2 cd4 21.Bd4 e5+=) 20...d5 (20...cd4 21.ed4 d5 22.Bb3=) 21.dc5 (21.cd5 Bd5 22.e4 Bb7+=) 21...Bc3= (worse 21...Qc5 22.Bf6 Nf6 23.Rc1+/-; worse 21...Nc5 22.Bf6 gf6 23.Qf6 Na4 24.Qg5 Kf8 25.Qh6 Ke8 26.Bh5+-) 22.Qc3 Nc5 23.cd5 Bd5 24.Bf3 Bf3 25.Nf3 Na4 26.Qc7 Rc7 27.Rfc1 Rc1 28.Rc1 g6 (28...h6 29.Ne5 f6 30.Nd7=) 29.Nd4 (29.Ne5 Ra5+=) 29...Rd8 (29...Nc5 30.g4=) 30.Rc6 (30.Rc7 Rd5 31.f4 e5 32.fe5 Re5+=) 30...Rd5 (30...e5 31.Nc2 Rd1 32.Kh2 Rb1=) 31.Kf1 (31.f4 Kg7+=) 31...Rc5 (better 31...e5!? 32.Nf3 Rb5-/+) 32.Rc5 (32.f4 Kf8+=) 32...Nc5 33.Ke2 Kf8 34.f3 Ke7 35.Kd2 Kd6 36.Kc3 f6 37.Kc4 e5 38.Nc6 Nb7 39.Nb4 (39.g4 Ke6=) 39...Na5=+ 40.Kd3 (40.Kc3 Kc5-/+) 40...Kc5-/+ 41.Na6 Kb5 42.Nc7 Kc6 43.Ne8 f5 44.Nf6 (44.g4-/+) 44...h6 (44...h5!?-/+) 45.Ng8=+ Kd6 (45...Kd5 46.e4 Ke6 47.ef5 gf5 48.Nh6=+) 46.Nh6 Ke6 47.g4 Kf6 (47...fg4 48.hg4 b5 49.f4=+) 48.h4 (48.gf5 Kg5 49.Ng4 Kf5=) 48...Nb7 (48...Kg7 49.g5=) 49.g5 (49.gf5 gf5 50.Ng8 Kf7 51.Nh6 Kg6=) 49...Ke6=+ 50.Kc4 (50.Ng8 e4 51.Ke2 ef3 52.Kf3 b5=+) 50...Nd6-/+ 51.Kb4 f4 (51...e4!? 52.fe4 Ne4-/+) 52.e4= Nf7?? (52...b5 53.Ng4=) 53.Ng4 (better 53.Nf7 Kf7 54.Kb5+-) 53...Kd6 54.Kb5 Kc7 (better 54...Nd8!?=) 55.Nf6 Nd6 56.Kb4 (56.Ka6 Nf7+/-) 56...Nf7 (56...Nc8!?+=) 57.Nd5+/- Kd6 58.Ne7?? (better 58.Nb6 Ke6 59.Nd5+/-) 58...Ke7-+ 59.Kb5 (59.Kc4 Ke6-+) 59...Nd6 60.Kb6 (60.Kc6 Ke6 61.Kb6 Ne4-+) 60...Ne4! 61.fe4 (61.Kb5 Nd2 62.Kb4 e4-+) 61...f3 62.Kc5 f2 63.Kd5 f1Q 64.Ke5 Qg2 65.h5 Qh3 (65...Qg5 66.Kd4 gh5 67.Kc4 h4 68.Kd3 h3 69.Kc3 Qe3 70.Kb4 h2 71.Kb5 h1Q 72.Kc6 Qhe4 73.Kb5 Qb7 74.Kc4 Qbb3) 66.h6 (66.hg6 Qg4 67.Kd4 Qg5-+) 66...Qh5 (better 66...Qe3!? 67.Kd5-+) 67.Kd4 Kf7 68.h7 Qg5 (better 68...Qh7 69.Kd5 Qh5-+) 69.h8Q= Qf6 70.Ke3 (70.Ke3 Qh8 71.Kd3-+). aymarc_Gutierrez (2615) - CocoDoYouLoveMe (2735), Rated bullet game, lichess.org, 2023.

4.e3 Nf6 5.Nf3 Be7 6.h3 0-0 7.Bc4 d5 8.Be2 Nbd7 9.0-0 Nc5 (9...a3 10.Bf6 Nf6 11.d4=+) 10.d3 Bd7 11.Nbd2 (11.c4!?=) 11...Bb5-/+ 12.Nh2 (12.Rb1 Bc6-/+) 12...Bd6 13.Bf6 (13.Nhf3 b6-/+) 13...Qf6 (13...gf6?! 14.d4 Be2 15.Qe2=+) 14.Ng4 Qg6 (14...Qc3 15.d4 Be2 16.Qe2-+) 15.Nf3 f5 (15...Rfb8 16.d4 Be2 17.Qe2-/+) 16.Nge5-/+ Qf6 17.d4 Be2 18.Qe2 Ne4 (better 18...Ra7!?-/+) 19.Nd7+= Rf7 (19...Rf7 20.Nf6 Nf6+-). Dont_give_up (1870) - unjournakamura (2455), Hourly Crazyhouse Arena, lichess.org, 2019.

4.a4 Bb7 (--> 1.b4 a5 2.b5 b6 3.a4 Bb7 4.Bb2 e6).

4.a4 c5 5.e4 d5 6.ed5 Qd5 (6...ed5 7.Nf3=) 7.c4 (7.Be2 Bb7 8.Bf3 Qd7+=) 7...Qd8 (7...Qd6 8.Be2=) 8.Nf3 (8.Qf3 Ra7+=) 8...f6 (8...Nf6 9.Ra3=) 9.Be2+= h5 (9...e5!?+=) 10.0-0 (better is 10.Nh4+/–) 10...g5? (better is 10...Bd6+/–) 11.Ng5!+- fg5 (11...Ke7+-) 12.Bh8 Nf6 (12...g4 13.Qc2 Qg5 14.f4+-) 13.Bh5 Nh5 14.Qh5 Kd7 15.f4 Bb7 16.Qf7 Kc8 (16...Be7 17.Bf6 Qe8 18.Qh7+-) 17.Qe6 (better is 17.Bf6 Be7 18.Qe6 Kc7 19.Qe7 Qe7 20.Be7 gf4+-) 17...Nd7 18.Nc3 Kb8 (18...Be7 19.Bg7 g4 20.Be5+-) 19.Be5 (19.fg5!? Qg5 20.g4 Qe7+-) 19...Ka7 20.Nd5 Bd5 21.Qd5 (worse is 21.cd5 Rc8+-) 21...g4 (21...gf4 22.Rf4 Ne5 23.Qe5+-) 22.Ra3 g3 (22...Be7 23.Rd3 Nf6 24.Qc6+-) 23.hg3 (23.Rg3 Qe8 24.Rd3 Rd8+-) 23...Be7 (23...Ne5 24.fe5 Qd5 25.cd5+-) 24.Rd3 Bf6 (24...Nf6 25.Qc6 Qc8+-) 25.Bf6 (25.Qd7 Qd7 26.Rd7) 25...Nf6 26.Qf7 Nd7 (26...Qd7 27.Rd7 Nd7 28.Qd7 Kb8 29.Re1 Ra7 30.Re8) 27.Rd7 Qd7 28.Qd7 Kb8 29.f5 (29.Re1 Ra7 30.Re8) 29...Ra7 30.Qd6 (30.Qd8 Kb7 31.Re1 Ra8 32.Re7) 30...Ka8 (30...Rc7 31.Re1 Kc8 32.Re8 Kb7 33.Qd5 Rc6 34.Qc6 Ka7 35.Qd7) 31.f6 (31.Qd8 Kb7 32.Re1 Ra8 33.Re7) 31...Rf7 (31...Rc7 32.f7 Rc8 33.f8Q Rf8 34.Rf8 Kb7 35.Qe7) 32.Qd5 (32.Re1 Rc7 33.Re8 Kb7 34.Qd5 Rc6 35.Qc6 Ka7 36.Qd7) 32...Rb7 (32...Kb8 33.Re1 Rc7 34.Re8 Rc8 35.f7 Rd8 36.Qd8 Kb7 37.Qe7) 33.Qb7! Kb7 (33...Kb7 34.f7 Mate attack) 34.f7 Kc8 35.f8Q Kc7 (35...Kd7 36.Rf7 Ke6 37.Qe7) 36.Rf7 1–0. rcm06 (1930) – larry126, gameknot.com, 2012.

4.a4 c6 5.c4 Nh6 6.e3 d5 7.d4 Bb4 8.Bc3 Bc3 9.Nc3+= 0-0 10.Be2 dc4 11.Bc4=. Trkn – ANDRE BALLICO, itsyourturn.com, 2001.

4.a4 d5 5.e3 Bc5?? 6.Bg7+- Nf6 7.Bh8 Ke7 8.Bf6 Kf6 9.Qh5 Ke7 10.d4 Bd6 11.Nf3 Nd7 12.Ng5 Qf8 13.Qh7 Bb7 14.Qh4 Ke8 15.Be2 Be7 16.Bh5 Qg8 17.Bf7 Qf7 18.Nf7 Bh4 19.Nh6 Bg5 20.Ng4 Ke7 21.h4 Bf6 22.Nf6 Nf6 23.Nd2 Rg8 24.g3 Ng4 25.Ke2 Nf6 26.Rhf1 Rf8 27.Nf3 Ng4 28.Ne5 Nf6 29.Nc6 Bc6 30.bc6 Kd6 31.Rac1 Kc6 32.c4 dc4 33.Rc4 Kd6 34.Rfc1 Rc8 35.Rc6 Kd7 36.f3 Nd5 37.e4 Nb4 38.R6c4 Kd6 39.Ke3 Kd7 40.f4 Kd6 41.g4 Na2 42.R1c2 Nb4 43.g5 Nc2 44.Rc2 Rh8 45.Rh2 c6 46.h5 b5 47.h6 b4 48.g6 Ke7 49.g7 Rg8 50.h7 Rg7 51.h8Q Rg3 52.Kf2 Rg2 53.Rg2 b3 54.Rg1 Kd6 55.Rb1 c5+- 56.Rb3 c4 57.Qe5 Kd7 58.Rb7 Ke8 59.Qh8# 1–0. Onkel_Luis – elbusto, ICC, 2003.

4.a4 d5 5.e3 Nf6 6.c4 Bb7 7.Nf3 Nbd7 8.Be2 dc4 9.0-0 Be7 10.Bc4 0-0 11.d4 Ne4 12.Nbd2 Ndf6 (12...Nd2 13.Nd2 Rc8 14.Rc1=) 13.Be2 (13.Ne4 Be4 14.Ne5 Bd6+=) 13...Nd2 14.Nd2 Bd6 (14...Rc8 15.Rc1=) 15.Bf3 Bf3 16.Qf3 Qd7 (16...Nd5 17.Ba3+=) 17.Rac1 Rac8 18.Rc6 Nd5 19.Rfc1 (19.Nc4 Qd8+=) 19...Nb4 20.R6c4 Nd3 21.R1c2?? (21.Rb1 e5+=) 21...Nb2?? (better 21...Ne1 22.Qc6 Qc6 23.Rc6 Nc2 24.Rc2 Rfd8-/+) 22.Rb2+= f5 23.Rbc2 e5 24.Qd5 Qf7 25.Qf7 Rf7 26.Nf3 e4 27.Nd2 Kf8 (27...Re8 28.Rc6+-) 28.g3 (28.Rc6 Rb8+-) 28...Ke8 (28...Bb4!?+=) 29.Rc6+- Kd7 30.Nc4 Rf6?? (better 30...Rb8+-) 31.Nb6!+- cb6 A pinning theme 32.Rc8 Eliminates the defender c8 32...h5 (32...h6 33.R2c6+-) 33.R8c6 (33.R2c6 h4+-) 33...h4 (33...Be7 34.Rc7 Ke8 35.R2c6+-) 34.Rb6 hg3 35.hg3 Rh6 (35...g5 36.Ra6+-) 36.Rcc6 g5 (36...Bb4 37.Rb7 Kd8 38.Rg7 Rc6 39.bc6+-) 37.Rd6 Rd6 38.Rd6 Kd6 39.Kf1 (better 39.g4 f4 40.ef4 gf4+-) 39...g4 40.Ke2 Kd5 41.Kd2 Kd6 42.Kc3 Kd5 43.Kb3 Ke6 44.Kc4 Kd6 45.d5 Ke5 46.Kc5 f4 47.gf4 (47.gf4 Kf6 48.d6+-) 1–0. BeepBeepImAJeep (2610) – JAMAISJEPAYE (2250), lichess.org, 2017.

4.c4 Bb7 5.e3 d5 6.Nf3 dc4 7.Bc4 Nf6 8.0-0 Be7 9.Bf6 (9.Nc3 c6+=) 9...Bf6= 10.d4 Bd5 (10...c5 11.bc6 Nc6 12.Nbd2=) 11.Nbd2 (11.Bd5 Qd5 12.Nc3 Qb7+/-) 11...0-0+= 12.Bd5 (12.Rb1 Be7+=) 12...ed5 (12...Qd5 13.Qb1+=) 13.Rc1 Nd7 (13...Qd7 14.Qa4+/-) 14.Qc2 Rc8 15.a4 Re8 16.h3 (16.Qb3 Nb8+=) 16...Re6 17.Qd3 Rd6 18.Rc3 Nf8 (18...c5 19.bc6 Rdc6 20.Rc6 Rc6 21.Qb5+/-) 19.Rfc1 Ne6 20.Ne5 (20.Nf1!?+/-) 20...Be5+= 21.de5 Rd7 22.Nf3 (22.Rc6 Nc5 23.Qd4 Qg5=) 22...Nc5 23.Qc2 Ne4 (23...Qe7 24.Rd1=) 24.Rc6+= Nc5 25.Nd4 White prepares e6 25...Qe7 26.f4 f6? (26...Re8!?=) 27.e6 (27.Nf5!? Qe8 28.ef6 gf6 29.Rf6 Ne4 30.Rb6 Ng3+-) 27...Rd6 (27...Rdd8 28.Qd1 g6 29.f5+/-) 28.Rc5 bc5 29.Qc5 Re8 (29...Qe8+/-) 30.Nf5 (better 30.f5 g6 31.Qc7 Qc7 32.Rc7 gf5 33.Kf2+-) 30...Qe6+= 31.Nd6 cd6 32.Qd4 Qe4 (better 32...Qe3!? 33.Qe3 Re3+/-) 33.Qe4+- Re4 34.Rb1 (better 34.b6 Rb4 35.Rc8 Kf7 36.Rc7 Kg6 37.b7+-) 34...Rb4?? (better 34...Re3 35.b6 Re8+=) 35.Rb4+- ab4 36.b6 b3 37.b7 b2 38.b8Q Kf7 39.Qb2 Ke6 40.Qd4 g6 41.g4 (41.a5 Ke7 42.a6 Kd7 43.a7 h6 44.Qa4 Ke7 45.a8Q f5 46.Q8e8 Kf6 47.Qd4) 41...g5 42.f5 Kf7 (42...Kd7 43.a5 Kd8 44.Qb6 Kd7 45.Qb7 Ke8 46.a6 Kd8 47.a7 d4 48.a8Q) 43.Qd5 Kg7 (43...Ke8 44.a5 h5 45.a6 Ke7 46.Qb7 Kd8 47.a7 hg4 48.a8Q) 44.Qe6 (44.Qb7 Kg8 45.a5 Kf8 46.a6 d5 47.a7 d4 48.a8Q) 44...Kh6 (44...h6 45.Qe7 Kh8 46.a5 Kg8 47.a6 d5 48.a7 d4 49.a8Q) 45.Qf6 1-0. HIALUPHARMpl (2600) - mago_pol (2615), Rated bullet game, lichess.org, 2021.

4.c4 c6 5.Nf3 Nf6 6.a4 (6.e3 Be7=) 6...Be7 7.e3 0-0 8.d4 c5 (8...Bb7 9.Bd3=) 9.Be2 d5 10.0-0 cd4 (10...Nbd7 11.Ne5+=) 11.ed4 (11.Qd4!? Bb7 12.cd5+=) 11...dc4= 12.Bc4 Nd5 13.Nbd2 Bb7 14.Qb3 h6 (14...Nd7 15.Rac1=) 15.Rfe1 Nd7 16.Rad1 N7f6 17.Ne5 Rc8 18.Ndf3 (18.Ba3 Ba3 19.Qa3 Nf4=) 18...Bd6 (18...Rc7 19.Ba3=) 19.h3 (19.Ba3 Qe7 20.Bd6 Qd6=) 19...Qc7 (19...Rc7 20.Ba3=+) 20.Kf1 (20.Rc1 Qe7=+) 20...Rfd8 21.Bd3 Nf4 22.Rc1 Qe7 23.Bc4 (23.Nc6 Bc6 24.bc6 Nd3 25.Qd3 Nd5=+) 23...Be5 (23...N6d5 24.Bd5 Bd5 25.Qe3 Be5 26.de5-/+) 24.de5 Ne4 25.Nd4?? (better 25.Red1!?=+) 25...Nc5 (better 25...Nd2 26.Kg1 Nb3 27.Bb3 Rc1 28.Rc1 Rd4 29.Bd4 Qg5-+) 26.Qg3 Bg2 27.Kg1 Qg5 (27...Na4 28.Qf4 Nb2 29.Kg2 Nc4 30.Nc6 Rc6 31.bc6-/+) 28.Rcd1? (28.Qg5 hg5 29.Ra1 Ne4-+ (29...Bh3?! 30.Nc6-/+)) 28...Bh3 (better 28...Na4 29.Bc1 Qg3 30.fg3 Rc4 31.Bf4 Bh3 32.Nc6 Rd1 33.Rd1-+) 29.Kh2?? (better 29.Qg5 hg5 30.Nc6 Na4 31.Rd8 Rd8 32.Bd4-+) 29...Bg4 (better 29...Na4 30.Nc6 Nb2 31.Rd8 Rd8 32.Nd8 Nc4-+ (32...Qd8?! 33.Qf4 g5 34.Rg1-+)) 30.Rg1 (30.Ra1-+) 30...Bd1 (30...Qh5 31.Qh4 Qh4) 31.Qg5-+ hg5 32.Rg5 (32.Nc6 Rc6! 33.bc6 Ba4-+) 32...Ba4 (better 32...Na4 33.Nc6 Nb2 34.Nd8 Rd8 35.Bf1-+) 33.Ne6 (33.Nc6 Rc6 34.bc6 Bc6 35.Bc1-+) 33…Nfe6 (33...Nfe6 34.Rg4 Bd1-+) 0-1. ClayPigeons (2145) - terelj (2145), Rated Bullet game, lichess.org, lichess.org, 2019.

4.e3 c6 5.a4 c5 6.Nf3 Bb7 7.Be2 Bd6?? 8.d4 (better 8.Bg7 Nh6 9.Bh8+- (9.Bh6?! Qf6+-)) 8...cd4 (8...Nf6 9.0-0+=) 9.Bd4 Nf6 10.0-0 (10.Nbd2 Bc7+=) 10...0-0 (10...Qc7 11.Nbd2 Bc5 12.c3+=) 11.Nbd2 Qe7? (11...Bc5 12.Bc5 bc5 13.Rb1+=) 12.c4 (12.Nc4!? Bc5 13.Nb6 Bb6 14.Bb6+-) 12...e5 (12...Bc7 13.Qc2+=) 13.Bb2 (13.Bb6!? Rc8 14.Ne1+=) 13...e4= 14.Nd4 (14.Ne1 Be5 15.Be5 Qe5=) 14...Be5 (14...Qe5 15.g3=) 15.Nf5 (15.f4 ef3 16.N2f3 Qe8+-) 15...Qe6 16.g4?? (16.Be5 Qe5 17.Nd4 Rc8=) 16...g6 (better 16...Bb2 17.Rb1 Be5-+) 17.Nd4+= Qd6 (17...Qe7 18.f4 ef3 A) 19.Rf3? Ng4 (19...Bf3?! 20.Bf3 Ra7 21.Qb3-/+) 20.Nf1 Qh4-+ (20...Bf3?! 21.Bf3 Qg5 22.Bg4-+); B) 19.Bf3 Ng4 20.Bb7 Ne3 21.Qe2 Nf1 22.Kf1 (22.Qf1?! Qg5 23.Qg2 Qe3 24.Qf2 Bh2 25.Kg2 Qf2 26.Kf2 Ra7=) 22...Qf6 23.Qf3+=) 18.f4 (18.Ba3 Qc7 19.Bf8 Kf8+-) 18...Bd4? (better 18...ef3 19.Bf3 A) 19...Bh2? 20.Kh1 Ng4 21.Bb7 Ne3 22.Qf3 (22.Ba8?! Nd1 23.Rad1 Bf4=) 22...Nf1 23.Nf1+- (23.Rf1?! Be5 24.Qe3 Nc6 25.bc6 Rae8+-; 23.Qf1?! Be5+-); B) 19...Ng4 20.Bb7 Bd4 21.Qg4 B1) 21...Be3? 22.Kh1 Qd2 23.Ba3+- (23.Ba8?! Qb2 24.Bd5 Kg7+-); B2) 21...Bb2+=) 19.Bd4+- Qe7 (better 19...h6+-) 20.g5 Nh5 (20...Ne8 21.Bb6 d5 22.Nb3+-) 21.Bh5 gh5 22.Qh5 Qe6 (22...Qd6 23.Rf2+-) 23.Bf6 (23.f5 Qd6 24.Rf4+-) 23...d6 (23...Qf5 24.Qh6 Qg6 25.Qg6 hg6+-) 24.Qh6 Qg4 25.Kh1 Qe2 (25...Qf3 26.Nf3 ef3 27.Qg7) 26.Qg7 1–0. GuestNVBF – GuestQGKZ, freechess.org, 2020.

4.e3 f5 5.Be2 Nf6 6.Bf3 d5 7.c4 Bb7 8.cd5 Nd5 9.Qb3 Nd7 10.d4 N7f6 11.Ne2 Bb4 12.Bc3 Nc3 (better 12...Bd6!?=) 13.Qe6+/- (13.Nec3?! Bd5 14.Qd1 c6=; 13.Nbc3?! Bd5 14.Bd5 Qd5 15.Qd5 Nd5=) 13...Qe7 14.Bc6 (14.Qe7 Ke7 15.Nbc3 Bf3 16.gf3 Rac8+/-) 14...Bc6? (better 14...Kd8!? 15.Qe7 Ke7 16.Nbc3 Bc6 17.bc6 Kd6+=) 15.Qc6+/- Qd7? (better 15...Kf7 16.Nbc3 Rhc8+/-) 16.Qa8= (16.Nbc3?! Qc6 17.bc6 Nd5+=; 16.Nec3? Qc6 17.bc6 Ne4-+) 16...Kf7 17.Qh8 Nb1 (17...Ne2 18.Ke2 Qb5 19.Kf3 Qd5 20.Ke2 Qb5 21.Kf3 Qd5 22.Ke2 Qb5=) 18.Kf1 Nd2 19.Kg1 Qb5 20.Nf4 Bc3 (20...Bd6 21.Qc8+-) 21.Rd1 Qa4 22.Rc1 Qa3 (22...c5 23.Qc8 Bb2 24.Qe6 Kf8+-) 23.Rd1 (better 23.Nd3 Kg6 24.Qd8+-) 23...Qa4 24.Rc1 Qa3 25.Nd3 Nde4 (25...Kg6 26.Qd8+-) 26.Ne5 Ke6 (26...Ke7 27.Qg7 Kd8 28.Rc2+-) 27.Qc8 Kd6 (27...Kd5 28.Qb7 Ke6 29.Qc6 Qd6 30.Rc3 Nc3 31.Qc3 Nd5+-) 28.Qf8 Ke6 29.Qa3 1-0. bjoernsen (2380) - Clubolim (2340), Rated blitz game, lichess.org, 2021.

4.e3 Nf6 5.c4 Be7 6.Nf3 0-0 7.a4 Bb7 8.Be2 c6 9.0-0 cb5 10.cb5 d5 11.d4 Nbd7 12.Nbd2 Rc8 13.Rc1 Bd6 14.Ne5 Qe7 15.Ndf3 (better 15.Nc6 Qe8 16.Qb3=) 15...Ne5?? (better 15...Rc1 16.Qc1 Rc8=) 16.de5+- (16.Ne5?! Rc1 17.Bc1 Ne4=) 16...Ba3 (16...Ne4 17.ed6 Qd6 18.Be5+-) 17.ef6 Qd6 (17...gf6 18.Rc8 Bc8 19.Ba3 Qa3 20.Qd4+-) 18.fg7 Rfe8 (18...Rfd8 19.Ba3 Qa3 20.Rc8 Rc8 21.Qd4+-) 19.Rc8 Rc8 20.Be5 (20.Bf6 h6 21.Bd3 e5 22.Be5 Qe6+-) 20...Qe7 21.Qd4 Bc5 (21...Ra8 22.Bf6 Qc5 23.Qd3+-) 22.Qf4 Bb4 (22...d4 23.Ng5 de3 24.Bd3+-) 23.Bd3 (better 23.Qh6 Re8 24.Bd3+-) 23...f5 24.Qh6 (better 24.g4 Bc3 25.gf5 Be5 26.Qe5 Qg7 27.Qg7 Kg7 28.fe6+-) 24...Bd6 (24...Qf7+-) 25.Ng5 Be5 26.Qh7 1–0. BeepBeepImAJeep (2635) – Kostya_Pereslegin (1850), lichess.org, 2015.

4.e3 Nf6 5.Nf3 Bb7 6.d4 a4 7.a3 Be7 8.Be2 0-0 9.0-0 Ne4 10.c4 f5 11.Nc3 Bf6 (11...Nc3!? 12.Bc3 Ra7+=) 12.Na4+/- d6 13.Nc3 Nd7 14.Ne4 fe4 15.Nd2 d5 16.Qc2 Qe7 (16...Rc8 17.Qb3+/-) 17.a4 (17.cd5 Bd5 18.Ne4 Rac8+-) 17...Rf7 (17...Rfc8 18.f3 e5 19.cd5 ed4 20.Ne4 (20.Qe4?! de3 21.Bf6 Qf6 22.Qe3 Bd5+/-; 20.fe4?! de3 21.Bf6 Nf6+/-) 20...de3 21.Bc4+/-) 18.Ba3 (better 18.cd5 ed5 19.Qc7+-) 18...Bh4?? (better 18...Qd8+/-) 19.Be7+- Be7 20.cd5 ed5 (20...Bd5 21.Ne4 Rc8 22.Bd3+-) 21.Qc7 (21.Qc7 Nc5 22.dc5 Bc5 23.Qe5+-) 1-0. Jaymarc_Gutierrez (2625) - YEMENchess (2675), Rated bullet game, lichess.org, 2023.

4.Nf3 Nf6 5.e3 Be7 6.c4 0-0 7.Qc2 c6 8.Ng5 h6 (8...Re8 9.Be2=) 9.h4 (9.Bf6 hg5 10.Be7 Qe7+=) 9...g6 (9...Re8 10.Nf3=+) 10.Nc3 (better 10.Ne4!?=) 10...cb5 11.cb5 d5 (11...hg5 12.hg5 Nh5 13.Be2 Bg5 14.Bh5 gh5 15.Ne4+-) 12.h5 (better 12.Nf3=) 12...hg5-/+ 13.hg6 Kg7 (13...e5 14.Rc1-/+) 14.gf7 (14.Nd5 fg6 15.Ne7 Qe7 16.Rc1=) 14...Rh8?? (better 14...Kf7 15.Rh6 Rg8-/+) 15.Rh8+= Qh8 16.Ne2 (better 16.Na4 Qd8 17.Bd4+=) 16...Kf7-/+ 17.Ng3 Bd7 18.0-0-0 (better 18.Bd4-/+) 18...Be8?? (18...Bd6 19.Be2-+) 19.Kb1?? (better 19.Qc8+-) 19...Nbd7 20.Bd3 Nc5 21.Bg6 (21.Rh1 Qf8 22.Bg6 Kg8 23.Bh7 Kg7=+) 21...Kf8 22.Rh1 (22.Be8 Ke8 23.Rh1 Qg8-/+) 22...Qg8 23.Bh7?? (23.Be8 Ke8 (23...Ne8? 24.Rh8+-) 24.Rh6 Qf7-/+) 23...Qg7 (better 23...Nh7 24.Rh7 Bb5 25.Re7 Bd3-+) 24.d4 (24.Bf6 Qf6 25.d4 Nb7-+) 24...Ncd7 (24...Nb7 25.Bd3-/+) 25.Bd3-/+ Bf7 26.e4 de4 27.Ne4 Ne4 (27...Rd8 28.Nf6 Qf6 29.Be4-+) 28.Be4-/+ Nf6 29.d5 (29.Ba8? Bg6 30.f3 Bc2 31.Kc2 Qg6 32.Kd2 g4-+) 29...Ne4?? (better 29...ed5 30.Bd3 Rd8-+) 30.Bg7+- Kg7 31.Qe4?? (better 31.f3 Nf6 32.Qc6+/-) 31...Rd8?? (better 31...Bg6 32.Qg6 Kg6-+) 32.Qd4 (better 32.Rh7 Kg8 33.de6 Rd1 34.Kc2 Rd2 35.Kd2 Bh5 36.Re7 Kf8 37.Qh7 Bf3 38.Qf7) 32...Bf6 33.Qb6 Bg6 (33...Rd5 34.Qa5 Bg6 35.Kc1 Rc5 36.Kd2 Rd5 37.Ke1 Re5 38.Kf1 Bd3 39.Kg1 Bb5 40.Qc7 Kf8 41.Qc8 Be8 42.Kf1+-) 34.Kc1 Rd5 35.Qc7 Bf7 (35...Kf8 36.b6 Be5 37.Rh8 Bh8 38.b7 Bb2 39.Kb2 Rb5 40.Kc3+-) 36.b6 (better 36.Qa5 Bd4 37.Qa8+-) 36...Rb5 (36...Be5 37.Qc8 Bf4 38.Kb2 Kg6+-) 37.b7 Be5 (37...Kg6 38.b8Q Rb8 39.Qb8+-) 38.Qe5! Re5 39.b8Q Rc5 40.Kd2 Rd5 41.Ke3 Kg6 (41...Bg8 42.Qb2 Kf7+-) 42.Qh8 Kf5 (42...Re5 43.Kd3 Rd5 44.Ke4 Rd4 45.Kd4 g4 46.Rh6 Kf5 47.Qe5) 43.Rh6 (43.g4 Kg4 44.Qh3) 43...Re5+- 44.Qe5! Ke5 45.Rh3 (45.Rh8 g4+-) 45...Kf5 (45...Be8 46.f3+-) 46.g3 (46.Rf3 Kg6+-) 46...Kg6? (46...e5 47.a3 g4 48.Rh7+-) 47.f4 (better 47.Rh8!? e5 48.Ra8 Ba2 49.Ra5 Bb1 50.Re5 Kf6+-) 47...e5 48.Rh1 (better 48.fe5 Ba2 49.Ke4+-) 48...Be6?? (48...gf4 49.gf4 ef4 50.Kf4 Ba2 51.Ra1+=) 49.Kf2?? (better 49.fe5 Ba2 50.Ra1+-) 49...ef4 50.Kg1?? (50.a3 fg3 51.Kg3 a4+=) 50...Bf5?? (better 50...Ba2 51.gf4 Bd5=) 51.Rh2 Be4 (better 51...Be6+=) 52.Rg2?? (better 52.gf4 gf4 53.Rb2+/-) 52...Bg2-+ 53.Kg2 fg3 (better 53...Kf5 54.a4 Ke4 55.gf4 Kf4-+) 54.Kg1 (54.a4-+) 54...Kf5 55.a3 g4 (better 55...Kg4 56.Kg2-+) 56.Kf1 Kf4 57.Kg1 (57.Kg2 a4-+) 57...Kf3 58.Kh1 g2 (58...Kf2 59.a4 g2 60.Kh2 g1Q) 59.Kg1 (59.Kg1 Kg3 60.a4 Kh3 61.Kf2 Kh2 62.Ke3 g1Q 63.Kf4 Qd4 64.Kg5 g3 65.Kf5 Qd7 66.Kf4 g2 67.Ke5 g1Q 68.Ke4 Qgd4 69.Kf3 Q7g4). Mr_Penings (2830) - AbuHorairaSourov (2500), 2024 Summer Marathon, lichess.org, 2024.

4.c4 d5 5.a4 b6 6.e3 Nf6 7.d4 Nbd7 8.Nf3 cd4 9.Nd4 Bb4 10.Bc3 Bc5 11.Nc6 Qc7 12.Nd2 0-0 13.Rc1 Bb7 14.cd5 Nd5 15.Bd4 Bc6 16.Bc5? Nc5-+ 17.bc6 Qc6 18.Bb5-/+ Qb7 19.0-0 Rac8 20.Nf3 Rfd8 21.Qe2 Qe7 22.Nd4 Qh4 23.g3 Qf6 24.Rfd1 h6 25.Kg2 Ne4 26.Nc6 Rf8 27.Rd4 Nec3 28.Qc2 Nb5 29.ab5 Nb4 30.Qc4 Nd5 31.e4+= Nc7? 32.Rd7 Rfe8 33.Rc2 Qg5 34.f3?? Kh7= 35.Rf7 Nb5 36.Qd3 Qh5 37.Rb7 Nc7? 38.Rb6 Qe5?? 39.f4 Qa1+/– 0–1. amator111 (1685) – fontolos (1820), kurnik, 2011.

4.bc6 Nc6 5.e3 Nf6 6.Nf3 Qb6 (6...d5 7.Nc3=) 7.Bf6+= gf6 8.d4 (8.c4 Bb4+=) 8...f5 9.Nbd2 Bb4 (9...Qb2 10.Bd3+=) 10.a3 Bc3 11.Rb1 Qc7 12.Bd3 Rg8 13.0-0 a4 14.Kh1 d5 15.Bb5 (15.Rb5 b6+=) 15...Bd7 16.Bc6 (16.Qe2 Qd6 17.Qd3 Qa3=) 16...Bc6=+ 17.Ne5 f6 (17...Qe7 18.Qc1=) 18.Qh5 Kd8 19.Nef3 (19.Nc6 bc6 (19...Qc6? 20.Qh7 Qe8 21.Rb7+-) 20.Nf3 Rf8=) 19...Qg7 (19...Rg7 20.Qh6 Qe7 21.Rb6=+) 20.Qh3 (20.Rg1!?=+) 20...Qg4-/+ 21.Qg4? (better 21.Rg1 Qh3 22.gh3-/+) 21...fg4-+ (21...Rg4?! 22.h3 Rg8 23.Rb6=+) 22.Ne1 (22.Rfd1 gf3 23.Nf3 b5-+) 22...Bd2 23.Nd3 Bc3 (23...Ke7 24.Nb4-+) 24.g3 (24.Rfd1 b5-+) 24...Kc7 (24...e5 25.Nc5-+) 25.Kg1 Ra6 (25...e5 26.Nc1-+) 26.Nf4 (26.Nc5 Ra7 27.Ne6 Kd6-+) 26...Re8 (26...e5 27.Ne2 Ba5 28.f3-+) 27.Nh5 (27.Ne2 Ba5-+) 27...f5 28.Nf6 Re7 29.Ng8 (29.f3 gf3 30.Rf3 b5-+) 29...Rf7 30.Nh6 Rg7 (30...Rf6 31.Ng8 Rf8 32.Nh6-+) 31.f4 (31.f3 gf3 32.Rf3 Rb6 33.Rb6 Kb6-+) 31...Rb6 (better 31...Be8!? 32.Kf2-+) 32.Rb6 Kb6 33.Rb1 Kc7 34.Kf2 b5 35.Kg2 (35.Rd1 b4 36.Rd3 Bb2 37.ab4 a3-+) 35...b4! 36.ab4 Bb5 37.Kf2 (37.h3 gh3 38.Kh3 a3-+) 37...a3 38.Kg2 a2 39.Rc1 a1Q 40.Ra1 Ba1 41.Kf2 (41.h4 Be8 42.h5 Bh5-+) 41...Bc3 42.Kg2 Kd7 43.Kf2 Ke7 44.Kg2 Kf6 45.Ng4 fg4 (45...fg4 46.Kf2 Bb4 47.Kg1 Bd2 48.h3 Be3 49.Kh2 Rc7 50.c3 Rc3 51.hg4 Rc2 52.Kh1 Bd3 53.g5 Ke7 54.f5 Be4) 0-1. cipiripi (2505) - SantosBarrios (2590), Rated bullet game, lichess.org, 2021.

4.e3 b6 5.c4 d5 6.f4 f5 7.Nf3 Nf6 8.Be2 Nbd7 9.0-0 Bb7 10.d4 h6 11.Nbd2 g6 12.Ne5 Bg7 13.Ng6+/– Qc7? 14.Ne5?? 0-0-0? 15.Ndf3 Ne4 16.Qc2 Rdg8? 17.Bd3 h5? 18.cd5 Bd5 19.dc5?? Ndc5 20.Rac1 Kb7 21.Bd4 h4 22.Be4 fe4 23.Nd2 h3 24.g3 Qe7? 25.Bc5 bc5? 26.Qc5 Qc5 27.Rc5 Kb6? 28.Nd7 Kb7 29.Rfc1 Rc8 30.Rc8 Rc8 31.Rc8 Kc8 32.Ne5 Ba2 33.Kf2 Bd5 34.Ke2 Kb7 35.Ndc4 a4 36.Kd2 Be5 37.Ne5 Kb6 38.Kc3 Kb5 39.g4 a3 40.g5 Ka4 41.g6 a2 42.Kb2 Kb4 43.g7 a1Q 44.Ka1 Kc3 45.g8Q Kd2 46.Qg3 Kc3 47.Qh3 1–0. carocan (1770) – nikb, kurnik, 2011.

4.a4 cb5 5.ab5 Qb6 6.Na3 Ba3? (6...d5 7.e3=) 7.Ba3?? (better 7.Bg7 Bb2 8.Bb2+-) 7...Qb5= 8.e4 (8.e3 Qf5=) 8...Qc6 (better 8...Qe5 9.Bd3 Nc6=) 9.d3 (9.Qg4!? g6 10.Qf4=) 9...b5 (better 9...Qc3 10.Ke2 d5 11.ed5 ed5-/+) 10.Nf3?? (10.Bb2 f6=+) 10...b4?? (better 10...Qc3 11.Nd2 b4 12.Bb4 Qb4-+) 11.Bb2=+ Nf6 (11...f6 12.Nd4 Qc5 13.Nb3=+) 12.Ne5 (12.Qd2 0-0=+) 12...Qc7 (12...Qc5=+) 13.Be2 (13.Nc4!? d5 14.Be5=+) 13...d6 (better 13...d5-/+) 14.0-0?? (better 14.Nc4 Nbd7 15.Ra4-/+) 14...de5-+ 15.Rc1 (15.c3 bc3 16.Qc2 Nc6 17.Qc3 0-0-+) 15...0-0 16.Qd2 (16.c3 Qd6-+) 16...Nc6 (16...Rd8 17.Qg5 Nbd7 18.c3-+) 17.f4 Nd4 18.Bd4 (18.Bd1 Rd8 19.Qf2 Ba6-+) 18...ed4 19.e5 (19.Ra1 Bb7-+) 19...Nd5 20.Bf3 Bb7 21.Bd5 Bd5 22.Rf3 (22.f5-+) 22...Bf3 23.gf3 Qe7 (23...Rfc8!? 24.Kh1-+) 24.Kf2 (24.Rb1 Qc5-+) 24...Qh4 25.Ke2 (25.Kg2 f6-+) 25...Qh2 26.Kd1 Qd2 (26...Qh1 27.Ke2 Qg2 28.Ke1 Qf3 29.Qf2 Qf2 30.Kf2-+) 27.Kd2 a4 28.Rg1 (28.Rb1 a3-+) 28...a3 29.Ra1 (29.Kc1 f6 30.Kb1 fe5 31.fe5 h5-+) 29...a2 (29...f6 30.Ke2-+) 30.Kc1 Rfb8 (30...h5!? 31.f5-+) 31.Kb2 f6 (31...h5!? 32.f5-+) 32.ef6 gf6 33.Ra2 (33.f5 e5 34.Rg1 Kf7 35.Ra1-+) 33...Ra2 34.Ka2 Kf7 35.Kb3 h5 36.Kc4 h4 37.Kd4 h3 38.Ke4 h2 39.f5 h1Q (39...ef5 40.Kd4 h1Q 41.Kc4 Qe1 42.Kd4 Qe5 43.Kc4 Qc3 44.Kd5 Rd8) 40.fe6-+ Ke6 41.d4 Qe1 42.Kd3 Qg1 (42...Qc3 43.Ke2 Qc2 44.Ke3 Kf5 45.f4 Kg4 46.d5 Re8 47.Kd4 Qc3) 43.d5 (43.c4 Kf5 44.d5 Qd1 45.Ke3 Re8 46.Kf2 Qe1 47.Kg2 Rg8 48.Kh3 Qg3) 43...Kd5 44.f4 (44.c4 bc3! 45.Kc3 Qd1 46.f4 Rb3) 44...Qd4 (44...Re8 45.c4 Kc5 46.Kc2 Re2 47.Kb3 Qd1) 45.Ke2 Qf4 (45...Re8 46.Kf3 Qe4 47.Kg3 Rg8 48.Kf2 Rg2 49.Kf1 Qe2) 46.c4 Kc4 (46...bc3 47.Ke1 Re8 48.Kd1 Qd2) 47.Ke1 (47.Kd1 Qf1 48.Kc2 Re8 49.Kd2 Re2) 47...b3 (47...Re8 48.Kd1 Qf1 49.Kd2 Re2) 48.Ke2 b2 49.Ke1 (49.Kd1 b1Q 50.Ke2 Rb2) 49...b1Q 50.Ke2 Rb3 (50...Rb2) ½-½. alessandrocarvalhaes (1920) - Mohaned0877 (1905), lichess.org, 2020.

4.a4 cb5 5.ab5 Qb6 6.e3 Nf6 7.c4 d5 8.Bf6 gf6 9.cd5 a4 (better 9...ed5!? 10.Nc3 Be6+-) 10.Ra4 Ra4 11.Qa4 Bd6 (11...ed5 12.Nc3 Be6 13.Be2+-) 12.Nc3 Bd7 (12...Nd7 13.de6 fe6 14.Nf3+-) 13.Nf3 0-0 (13...h5 14.Qh4 Rh6 15.Be2+-) 14.Qh4 Be7 (14...Kg7+-) 15.Bd3 e5 (15...f5 16.Qe7 Qd8 17.Qd8 Rd8+-) 16.Qh7 1–0. Pierre – GuestDQrQv, internet, 2020.

4.a4 Qb6 5.c4 d5 6.e3 dc4 7.Bc4 cb5 8.ab5 Bd7 9.Nc3 Bb4? (better 9...Nf6+=) 10.Na4+- Qc7 11.Rc1 Nf6 12.Be6 Qd6 (12...Be6 13.Rc7 Discovered attack; 12...fe6 13.Rc7 Discovered attack) 13.Bd7 Nbd7 14.Nf3 0-0 15.0-0 Ne4 16.d3 Nec5 17.Nc5 Nc5 18.Nd4 a4? (better 18...Rfd8+/-) 19.Nf5+- Qg6 (19...Qd3 20.Ne7 Kh8+-) 20.Ne7 (20.Ne7 Kh8 21.Ng6 hg6 22.Rc4+-) 1-0. bjoernsen (2375) - Dragoner97 (2335), Rated blitz game, lichess.org, 2021.

4.a4 Qb6 5.c4 d5 6.Nf3 dc4 7.Na3 cb5 8.ab5 Bd7 (8...Nf6 9.Nc4 Qb5 10.e3+=) 9.Nc4+/- Qb5? (better 9...Qc7!? 10.Qb3 Qc5+/-) 10.Bg7!+- Bg7? (better 10...Qc4 11.Bh8 b5+-) 11.Nd6 Ke7 12.Nb5 Bb5 13.d4 Nf6 (13...Bc6 14.e3+-) 14.Qb3 Bc6 15.Ra5! Ra5 16.Qb4 Kd7 17.Qa5 Na6 (17...Bf3 18.gf3 Nc6+-) 18.Ne5 (18.Ne5 Kd6 19.e3+-) 1-0. Vendelo – Lynnersi, internet, 2021.

4.a4 Qb6 5.c4 Nf6 6.Nc3 Be7 7.e3 0-0 8.Nf3 d5 9.Be2 Nbd7 10.0-0 Nc5 (10...c5 11.d4+=) 11.Qc2 Re8 12.Rfc1 Bf8 13.h3 (13.d4 Ncd7+/-) 13...Bd7 14.Ne5 Rad8 (14...Bd6 15.d4 Be5 16.de5+/-) 15.Rab1 (15.d4 Nce4+/-) 15...Qc7 (15...cb5!? 16.d4 bc4 17.dc5 Qc5 18.Nd7 Rd7+=) 16.d4+/- Nce4 17.Nd1 (17.Ne4 de4 18.c5 cb5 19.ab5 Ra8+/-) 17...dc4 (better 17...cb5 18.ab5 dc4 19.Bc4 Rc8+=) 18.Qc4?? (18.Bc4 Rc8 19.Bd3+/- (worse 19.Nd7 Qd7 20.Nc3 Nd6 21.bc6 Rc6+=)) 18...c5?? (18...Nd2 19.Qc2 Nb1 20.Rb1-/+) 19.f3?? (19.Qc2 c4+-) 19...Ng3?? (better 19...Nd2 20.Qd3 Nb1 21.Qb1 Rc8-/+) 20.Bd3 Qb8? (better 20...Bd6!?+/-) 21.dc5+- Nd5? (21...Qc7 22.c6 bc6 23.Qf4+-) 22.e4 (better 22.c6 Bc8 23.Qc2+-) 22...Nf4 23.Kf2 (23.Nf2 Qc7+-) 23...Ngh5 (23...Nh1 24.Kf1 Ng3 25.Ke1 A) worse 25...Ng2 26.Kf2 Nf4 27.Kg3 (27.Nd7 Rd7 28.Bf1 Rd2 29.Ke1 Nf1 30.Kf1 Rh2-+) 27...Bb5 28.Qb5 (28.Kf4? Bc4 29.Bc4 f6-+) 28...Nd3 29.f4 Nc1 30.Rc1+/-; B) 25...Bc8=) 24.Bf1+/- (24.Nd7 Rd7 25.Bf1 Nh3 26.gh3 Qh2 27.Bg2 Rd2 28.Ke1 Rg2-+) 24...f6 25.Nd7 Rd7 26.Rc2 Kh8 (26...Red8 27.Ke1 Rc7=) 27.g3?? (better 27.c6 bc6 28.bc6+-) 27...Ng6 (27...Nh3 28.Bh3 Qg3 29.Ke3-+) 28.f4 (better 28.e5 Rd5 29.c6 Ne5 30.Be5 Qe5 31.f4 Bc5 32.Kg2=) 28...Ngf4?? (better 28...Ng3 29.Kg3 Qf4 30.Kg2 Nh4 31.Kh1 Qf3 32.Kh2 Rd1 33.Rd1 Qd1=+) 29.e5 (29.gf4!? Qf4 30.Ke1+-) 29...Nd5+/- 30.Qg4 (30.Be2!? Bc5 31.Qc5 Ng3 32.Qc4 Ne2 33.Re2+/-) 30...g6+= 31.ef6 Rf7 32.Bg2 (32.Kg2 Nhf6 33.Qg5 Bg7+=) 32...Nhf6 (32...Nb4!? 33.Rd2 Bc5 34.Ke1 Bd6-/+ (worse 34...Qg3 35.Qg3 Ng3 36.Be5+=)) 33.Bd5 ed5 34.Kg2 Kg8 35.Qd4 Bg7 36.Nf2 Ne4 37.Qd5?? (better 37.Qd3=) 37...Qg3-+ 38.Kh1 Nf2 39.Rf2 Qf2 40.Bg7 Kg7 41.c6 Re1 (41...Re2 42.Qd4 Qd4 43.Rc1 Qe4 44.Kg1 Qg2) 42.Re1 Qe1 43.Kg2 (43.Kh2 Rf1 44.Qd4 Kh6 45.Qd5 Qf2 46.Qg2 Qf4 47.Qg3 Rf2 48.Kh1 Qe4 49.Qf3 Qe1) 43...Rf2 (43...Qe2 44.Kg3 Qf2 45.Kg4 Qf4) 44.Kg3 Qe3 (44...Qe3 45.Qf3 Qf3 46.Kh4 Qf4) 0-1. bjoernsen (2380) - tricksya (2345), Rated blitz game, lichess.org, 2020.

4.a4 d5 5.e3 Nd7 6.Nf3 Ngf6 7.Be2 Bd6 8.0-0 0-0 9.d4 Re8 10.Nbd2 e5 11.de5 Ne5 12.Ne5 Be5 13.Be5 Re5 14.Nf3 Re8 15.c4 Be6 16.cd5 Bd5 17.Qc1 Ne4 18.Rd1 Qf6 19.bc6 Bc6 20.Nd4 Rac8 21.Rf1 Bd5 22.Qb2 Nc3 23.Bg4 Qg6 24.Bf3 Bf3 25.Nf3 Qd3 26.Qb7 Rc5 27.Nd4 Rg5 28.g3 h5 29.h4 Rg4 30.Rac1 Re3 31.Qc8 Kh7 32.Rc3 Qc3 33.Qf5 Kg8 34.fe3 Qe3 35.Qf2 Qf2 36.Kf2 Rd4 37.Ra1 g6 38.Kf3 Kg7 39.Ke3 Rg4 40.Ra3 Rg3 0–1. Orang4Utan (1890) – tlutard (1915), lichess.org, 2018.

4.a4 d5 5.e3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 a5).

4.a4 d5 5.Nf3 Nf6 6.e3 Be7 7.Be2 0-0 8.0-0 Nbd7 9.c4 Re8 10.Nc3 Bf8 (10...Nb6 11.cd5 ed5 12.bc6 bc6 13.Qc2=) 11.bc6 (11.d4 Bb4+=) 11...bc6= 12.cd5 ed5 13.d4 g6 (13...Ba6 14.Ba6 Ra6 15.Ba3=) 14.Rc1 (14.Ba3 Bb4 15.Qb3 Rb8+=) 14...Nb6 (14...Ba6 15.Qc2+=) 15.Bd3 (15.Ne5 Bd7+=) 15...Bg7 (15...Ba6 16.Ba6 Ra6 17.Qe2=) 16.Re1 (16.Ne5 Qd6+=) 16...Bg4 17.h3 Bf3 18.Qf3 Rb8 (18...Qe7 19.Rc2+=) 19.Ba3+/- Qd7 20.Rb1 Nc4 21.Bc4 dc4 22.Bc5 (22.Rb8 Rb8 23.Bc5 Rb3+=) 22...Nd5 (22...Rb3 23.Rec1+=) 23.e4 (better 23.Ne4!?+/-) 23...Nb4= 24.Red1 (24.Qg3 Rbd8 25.Bb6 Nd3 26.Bd8 Ne1=) 24...Nd3 25.e5 (25.Rb8 Rb8 26.Qg3 Rb2 27.Rd3 cd3 28.Qd3 h6=+) 25...Nc5 (25...Rb1 26.Rb1 Nc5 27.dc5 Be5 28.Rd1-/+) 26.dc5 (26.Rb8!? Rb8 27.dc5=+) 26...Qe6 27.Rd6?? (better 27.Ne4 Be5 28.Rb8 Rb8 29.Qe3-/+) 27...Qe5-+ 28.Rb8 (28.Rd7 Qc3 29.Qf7 Kh8-+) 28…Rb8 0-1. Skiadopoulos,Nikolaos (1880) - Rengifo Blancas,Renzo Jhonathan (2115), Titled Tue 4th Feb Early (1), 2025. — — Nikolaos Skiadopoulos is a Greek chess player born in 1954, holding the FIDE title of Candidate Master, which he earned in 2023. He is affiliated with the Greek Chess Federation and hails from Kavala, with an association to Jovan Petronic. In addition to his playing career, he has been a licensed National Arbiter since 2013. — — His current FIDE ratings include a standard rating of 1882 (inactive), a rapid rating of 1871 (active), and a blitz rating of 2022 (inactive). Skiadopoulos reached a peak Elo rating of 2285 during his career, with his Elo history showing fluctuations over the years, such as around 2340 in 1989 down to about 1890 more recently. He does not appear in active world or national rankings for standard chess, placing him at 141989 overall among all players globally and 1367 in Greece. — — Over his chess career, Skiadopoulos has played 899 recorded games, with an overall performance of about 22% wins, 8% draws, and 70% losses. His results are similar whether playing as White or Black. Among his notable achievements is a strong win against the higher-rated Martin Bitelmajer (2475) while Skiadopoulos was rated 1896, ending 1-0. On the other hand, one of his weaker losses was to Maria Tsakona (1407) when he was rated 2036, resulting in 0-1. He has struggled against certain opponents, such as Daniel E. Shapiro, against whom he has five losses with no wins or draws. — — In terms of openings, when playing as White, Skiadopoulos often favors uncommon openings, the Caro-Kann Defense, Sicilian lines, the Alapin variation of the Sicilian, and the French Advance. As Black, he commonly employs Sicilian defenses, including the B32 and B30 variations, the Benko Gambit, the Alapin Sicilian, and closed Sicilian systems. Recent games from 2024 and 2025 include losses to players like Eyal Noy (2308) in an uncommon opening and Volen Dyulgerov (2200) in a Sicilian, as well as a win against Juan Miranda Camus (2196) in a Sicilian. He remains active in online platforms like chess.com under the username stratacticos and World Chess, where he has played thousands of games with a win rate around 61% in some online contexts. — — Note created: December 2025. (AI)

4.a4 Nf6 5.e3 b6 6.Nf3 Bb7 7.Be2 (7.Na3 c5 8.Nc4 d5=) 7...cb5 8.ab5 (8.Bb5 Nc6+=) 8...Be7 (8...d5 9.c4=) 9.0-0 0-0 10.d3 Qc7 11.c4 Ng4 (11...d5 12.Nbd2+=) 12.h3 (12.Nbd2 d6+/–) 12...Bf3 13.hg4 Be2 14.Qe2 d6 15.Qf3 Nd7 16.Nd2 Ne5 17.Qg3 (better is 17.Qe2=) 17...Nd3-/+ 18.Bd4 Nc5 19.Bc5 Qc5 (19...bc5?! 20.Ra4+=) 20.Rac1 (20.Ra4 Qe5 21.Qe5 de5-+) 20...Rfd8 (20...a4 21.Ne4 Qe5 22.Qe5 de5 23.Rfd1-+) 21.Ne4 (21.Nb3 Qe5 22.f4 Qe4-+) 21...Qe5 22.Qe5 de5 23.Rfd1 (23.c5 bc5 24.Nc5 Rab8-+) 23...Rd1 24.Rd1 Rd8 (24...a4!? 25.c5 f5 26.gf5 ef5 27.Nd6 Bd6 28.Rd6-+) 25.Rd8 Bd8 26.Nd6 (better is 26.Nc3-+) 26...a4 27.Ne4 a3 28.Nc3 Kf8 29.Kf1 Be7 30.Ke2 f5 (30...Bb4 31.Na2 Bc5 32.e4-+) 31.f3 (31.Kd2 fg4 32.Kc2 h5-+) 31...Kf7 (31...Bb4 32.Na2 Bd6 33.gf5 ef5 34.Kd3-+) 32.gf5 (32.Kd3 Bc5 33.e4 fg4 34.fg4 Ke7-+) 32...ef5 33.Kd3 h5 34.Kc2 g5 35.Kb3? (35.Na4 h4 36.Nb6-+) 35...g4 36.Nb1 (36.fg4 fg4 37.Ne4-+) 36...gf3 37.gf3 h4 38.Na3 (38.Nd2-+) 38...Ba3 39.Ka3 h3 40.c5 h2 41.cb6 h1Q 42.b7 Qa1 (42...Qa1 43.Kb4 Qa7-+) 0–1. GuestQVBQ – GuestLCHL, freechess.org, 2017.

4.a4 Nf6 5.e3 c5 6.Nf3 d5 7.c4 b6 8.d4 Bb7 9.dc5 Bc5 10.Nbd2 0-0 11.Be2 dc4 12.Bc4 Nbd7 13.0-0 Rc8 14.Rc1 Qe7 15.Qe2 Ba3 16.Ba3 Qa3 17.Ra1 Qb4 18.Rfb1 (18.Nd4 Ne5 19.Rfb1 Qd6=) 18...Qe7 (18...Bf3 19.gf3 Qc5 20.f4=+) 19.Nd4 Nc5 20.Rd1 Rfd8 21.N2f3 (21.N4b3 Nb3 22.Bb3 Rc3=) 21...Nfe4 22.Ne5? (better 22.Qc2!?=+) 22...Nc3-+ 23.Qg4 Nd1 24.Nec6?? (better 24.Rd1 Qf6 25.Ndc6 Rd1 26.Qd1 Bc6 27.Nc6-+) 24...Bc6 25.Nc6 Qf6 (better 25...Rc6 26.bc6 Nf2-+) 26.Rd1 Rd1 27.Qd1 e5 (27...Rc7!? 28.f4 Rd7 29.Nd4-+) 28.h3 h6 29.Qg4 Rc6 (better 29...Re8!?-+) 30.bc6-/+ Qc6 (30...Na4 31.c7 Kh7 32.c8Q+-) 31.Bb5 Qe6 32.Qf3 e4 33.Qf4 Kh7 34.g4 Nd3 35.Qc7 (35.Qf5 Qf5 36.gf5 Ne5-/+) 35...Qf6 (35...Qa2 36.Bd3 ed3 37.Qd7-+) 36.Qc2 Qe5?? (better 36...Nc5-/+) 37.Bd3+= ed3 38.Qd3 g6 39.Qd7 Kg7 40.Kg2 Qc5 (better 40...Qe4 41.Kg3 Qe5 42.Kg2 Qe4 43.Kh2 Qe5 44.Kg1 Qe6 45.Qe6 fe6+/-) 41.f4?? (41.h4 Qe5+=) 41...Qb4?? (better 41...Qe3!? 42.Qd6 Qe4 43.Kg3 Qa4 44.Qb6 Qa1-+) 42.f5 (42.Qd4 Kg8+=) 42...Qb2 (42...gf5 43.gf5 Qe4 44.Kf2 Kf6 45.Qd6 Kf5 46.Qb6 Qh4 47.Ke2 Qa4 (worse 47...Qh3 48.Qa5 Ke6 49.Qb6 Kd7 50.Qd4 Ke8 51.Qe5 Kd7 52.Qd5 Ke7 53.a5+=) 48.Qh6 Qc4 49.Kd2 a4=+) 43.Kg3 Qe5 44.Kf3 gf5 45.Qf5 Qd6 46.Qb5 Qf6 47.Kg3 Qd6 48.Kf3 Qe7 (48...Qf6 49.Ke4=) 49.e4 (better 49.Qb6!? Qh4 50.Qd4 Kg8 51.Kg2+/-) 49...Qf6 50.Qf5 (better 50.Ke2!?=) 50...Qc3-/+ 51.Kf4 Qd2 (51...Qc1 52.Ke5 Qa1 53.Kf4 Qa4 54.Qe5 Kh7 55.Qf5 Kg8 56.Qf6-/+) 52.Kf3 (better 52.Kg3!?=) 52...Qd1-/+ 53.Kg2 (53.Ke3 Qa4 54.Qe5 Kh7 55.Qf5 Kg8 56.Qc8 Kg7 57.Qc3 Kh7-/+) 53…Qd2 (53...Qd2 54.Kf3 Qd3 55.Kf4 Qh3 56.Qe5 Kh7 57.Qf5 Kg8=+) 0-1. jhonores (2220) - Alex_Stepo (2220), Hourly SuperBlitz Arena, lichess.org, 2020.

4.c4 cb5 5.cb5 Qb6 6.a4 d5 7.e3 Nd7 8.Nf3 f6 9.Be2 Nc5 10.Ba3 g5 11.Nd4 e5= 12.Bh5 Kd8 13.Nb3 Nd3=+ 14.Ke2 e4?? 15.Bf8+- Qe6 16.Bg7 Nb2 17.Qc2 Nc4 18.Bh8 g4 19.h3 f5 20.Bd4 Qh6 21.hg4 f4 22.Nc3 f3 23.gf3 ef3 24.Kf3 Qf8 25.Ke2 Na3 26.Ra3! Qa3 27.Bc5 (27.Bc5 Qc5 28.Nc5+-) 1–0. bcholy – gummi57, ChessWorld.net, 2005.

4.c4 cb5 5.cb5 Qb6 6.a4 d5 7.e3 Nf6 8.Nf3 (8.Bf6 gf6 9.Nc3 Bd7+=) 8...Bb4 (8...Nbd7 9.Be2=) 9.Be2 0-0 10.0-0 Nbd7 11.Qb3 Nc5 12.Qc2 Bd7 13.d4 (13.Bf6 gf6 14.Qb2 Qd8+=) 13...Nce4= 14.Qb3 Rac8 15.Rd1 (15.Ne5 Bd6=) 15...Rc7 (15...Ng4 16.Rf1=+) 16.Ne5= Rfc8 17.Nd2?? (better 17.f3 Nd6 18.Nd3=) 17...Nd2-+ 18.Nd7 (18.Qd3 Nc4 19.Nc4 dc4-+) 18…Nb3 (18...Nb3 19.Nb6 Na1 20.Ra1 Rd8-+) 0-1. ClayPigeons (2130) - zmagar (2260), Rated Bullet game, lichess.org, lichess.org, 2020.

4.c4 Qb6 5.e3+= d5 6.a4 Nd7 7.d4 Bb4 8.Nd2 dc4 9.Bc4+= Ngf6 10.Qc2 0-0 11.Ngf3 Re8 12.0-0 c5 13.Nb3 Qd6 14.Bd3 b6 15.Nfd2 Bb7 16.dc5 bc5 17.Nc4 Qd5 18.f3 e5 19.Rfd1 Qe6+/– 20.Bf5 Qe7 21.Bc3 g6 22.Bb4 cb4 23.Bd7 Nd7 24.Nba5 Nc5 25.Nd6 e4 26.f4 Nd3 27.Ne8 Re8 28.Nb7 Qb7 29.Rd3 ed3 30.Qd3 Qb6 31.Kf2 Rd8 32.Qc2 Rd4 33.Rb1?? Rf4+/– 34.Ke2 Rg4?? 35.Qc8+- (35.Qc8 Kg7 36.Qg4+-) 1–0. Nordbrink,Juergen – Karlsson,Ewald, corr, 1980.

4.c4 c5 5.e3 d5 6.a4 Nf6 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Nbd7 10.d4 dc4 11.Bc4 (11.dc5 Bc5 12.Bc4 b6=) 11...cd4 (11...b6=) 12.Nd4 (12.Qd4 Qc7 13.Rd1+=) 12...b6?? (12...Bh2 13.Kh2 Qc7 14.Kg1 Qc4 15.Qb3=+) 13.Nc6 (better 13.Ne6 Bh2 14.Kh2 fe6 15.Be6 Kh8 16.Ba3+-) 13...Qc7=+ 14.h3 Bb7 15.Nd2 Bc6 16.bc6 Qc6 17.Rc1 Qb7 18.Bb5 Ne5 (18...Rad8 19.Qe2=+) 19.Nb3 (better 19.f4!? Ned7 20.Bc6+-) 19...Rfd8 20.Nd4 Qe7 (20...Rac8 21.Rc8 Qc8 22.Qa1=) 21.Qe2 (21.f4 Ned7 22.Nc6 Qf8 23.Nd8 Rd8+-) 21...Rac8 (21...Rdc8 22.f4 Ned7 23.Bc6=) 22.Rfd1 (22.f4!? Ng6 23.Nc6 Rc6 24.Rc6+-) 22...Nd5 (22...Rc1 23.Rc1 Qf8 24.f4=) 23.Nf5 White is in command 23...ef5 24.Rd5 Rc1 25.Bc1 Bb4 (25...f6 26.Qc2=) 26.Qd1 Rd5 27.Qd5 h6 (27...Qd6 28.Qa8 Qf8 29.Qb7=) 28.Bb2+= Bd6 29.Qd4 Qc7 (better 29...f6!?+=) 30.f4+- f6 31.fe5 Be5 32.Qd5 (32.Qc4 Qc4 33.Bc4 Kh7+-) 32...Kh7 33.Be5 Qc1? (better 33...Qe5 34.Qd4 Qc5+-) 34.Kh2 fe5 35.Qe5 (better 35.Bd7 Qc7 36.Bf5 g6 37.Be4+-) 35...Qf1 (35...Qc5 36.Qe6 Qc7 37.Kg1 g6+-) 36.Bd7 (36.Bf1 h5 37.Qf5 g6 38.Qf7 Kh6 39.Bd3 b5 40.Qg6) 36...g6 37.Qe7 Kh8 38.Qf8 (38.Qf8 Kh7 39.Qf7 Kh8 40.Be6 Qg2 41.Kg2 b5 42.Qg8) 1–0. BeepBeepImAJeep (2720) – imonahorse (2435), lichess.org, 2016.

4.c4 d5 5.e3 dc4 6.Bc4 cb5 7.Bb5 Bd7 8.Nc3 Nf6 9.Nf3 Bd6 10.a4 0-0 11.Qc2 Nc6 12.Ng5 h6 13.h4 Nb4 (13...hg5 14.hg5 Nb4 15.Qb1+/–) 14.Qb1 Bb5 (14...hg5 15.hg5 Bb5 16.Nb5+/–) 15.Nb5 Be7 (better is 15...e5!?+=) 16.Bf6+= Nd3 17.Ke2 (17.Ke2 gf6 18.Ne6 fe6 19.Qd3 Qd3 20.Kd3+/–) 1–0. combijack (1820) – aleatorical (1715), gameknot.com, 2011.

4.c4 d5 5.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 a5).

4.c4 Nf6 5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 a5).

4.bc6 Nc6 5.e3 d5 6.Nf3 e5 (better is 6...Qb6!? 7.Bc3 Nf6=) 7.Ne5+/– Ne5 8.Be5 Qh4 (8...Ne7 9.Qh5+/–) 9.Bg3 Qe4 (better is 9...Qg5+-) 10.Nc3 Qe5 (10...Qf5 11.Bd3 Qg5+-) 11.Be5 Ne7 12.Bb5 (better is 12.Nb5 Kd7 13.Nc7 Ra7+-) 12...Nc6 13.Nd5 Bg4 14.Qg4 Bd6 15.Bd6. Fournier,Frederic (1625) – brothers, ChessOK.com, 2012.

4.e3 Nf6 5.Nf3 Nd5 6.c4 Nb6 7.a4 (7.Qc2 d5+=) 7...cb5 (7...d5 8.cd5 ed5 9.Qc2+=) 8.cb5+= Nd5 9.Nc3 Nc3 10.Bc3 d5 11.Bd3 Bd7 (11...Nd7 12.0-0+=) 12.Ra2 Qb6 13.Qa1 (better 13.Ng5 h5 14.Qa1+-) 13...Bb4?? (better 13...f6+/-) 14.Bg7+- Rg8 15.Bh7 Rg7 16.Qg7 Qc5 (16...Bf8 17.Qf6 Be7 18.Qh8 Bf8 19.Ne5+-) 17.0-0 (17.Rc2 Qf8 18.Qf8 Kf8+-) 17...d4 (17...Qf8 18.Qf8 Kf8 19.Rc2+-) 18.Ne5 (better 18.Be4 Ra7+-) 18...Qd5 (18...Qf8 19.Qf8 Kf8+-) 19.Rc2 Kd8 (19...d3 20.Rc4 Bc5+-) 20.Nf7 Ke8 21.Bg6 (21.Bg6 Bc6 22.Qh8 Ke7 23.Qh4 Kf8 24.e4 Kg7 25.Qh6 Kf6 26.Bh5 Ke7 27.ed5 Kd7 28.b6 Ke7 29.Qe6 Kf8 30.Nh6 Kg7 31.Qg6 Kh8 32.Nf7) 1-0. FeegLood (2390) – ALKA. Time forfeit, lichess.org, 2015.

4.a4 c6 5.e3 Bd7 6.c4 dc4 7.Bc4 cb5 8.ab5 Bb4?? 9.Bg7+- Qg5 10.Bh8 Qg2 11.Qf3 Qf3 12.Nf3 f6 (12...Ke7 13.Bc3 Bc3 14.Nc3+-) 13.Rg1 Kf7 (13...Ne7 14.Bf6 Bd6 15.Nc3+-) 14.Rg7 Kf8 15.Rh7 (better 15.Nd4 Ne7 16.Ne6 Be6 17.Be6 Ke8+-) 15...b6 (15...Bc5 16.Nc3 b6 17.Na4+-) 16.Ke2 (better 16.Nd4 e5 17.Ne6 Be6 18.Be6 a4+-) 16...Be8 (16...Bc5 17.Nc3 Ra7 18.d3+-) 17.Be6 (better 17.Nd4 Bd7 18.Ne6 Be6 19.Be6 a4+-) 17...Bb5 18.d3 (18.Kd1 Nc6 19.Rb7 Nd8 20.Bg7 Ke8 21.Rb6 Ne6 22.Rb5 Rc8+-) 18...Nc6 (18...Na6 19.Ba2 Nc5 20.Bg7 Ke7 21.Bh6 Kd8 22.Rh8 Bd3 23.Kd1+-) 19.Bd5 (19.Rb7!? Nd8 20.Rb6 Ne6 21.Rb5 Re8+-) 19...Rd8 20.Bg7 Ke7 (20...Ke8 21.Be4+-) 21.Bh6 (21.e4!? Kd6+-) 21...Kd6 22.Bg8 (22.Bc6 Bc6 23.Nd4 Nh6 24.Rh6 Rf8+-) 22...Rg8 23.Rg7 (23.Bf4!? Ke6 24.Bc7 Bc5+-) 23...Rd8 24.Bf4 (better 24.Na3 Ba6+-) 24...Ne5 (24...Ke6 25.Ne1 Be1 26.Ke1 Nb4+-) 25.Be5 fe5 26.Rg6 Kd5 (26...Ke7 27.Ne5 Bd6 28.Nc4+-) 27.e4 Kc5 28.Ne1 (better 28.Ne5 Be8 29.Rg5 Kd6+-) 28...Be1 29.Ke1 Bd3 30.Nd2 Kd4 (30...Kb5 31.Ra3 Rd4 32.Rb3 Kc5 33.Rbb6 Re4 34.Ne4 Be4 35.Rh6+-) 31.Ra4 (better 31.Rb6 Kc5 32.Rb3+-) 31...Kc3 (31...Kc5+-) 32.Rc6 Kb2 33.Rb6 Kc2 (33...Kc1 34.Ra1 Kc2 35.Rb3 Rc8 36.Ra2 Kc1 37.Rb1 Bb1 38.Nb3) 34.Ra2 (34.Rb3 Kc1 35.Ra2 Rc8 36.Rb1 Bb1 37.Nb3) 34...Kc3+- 35.Re6 (better 35.Ra5 Bc4 36.Ra3 Kd4+-) 35...Kd4 (35...Kb4 36.Re5 a4 37.Re7+-) 36.Ra5 (better 36.Ra4 Kc5 37.Ra5 Kb4 38.Rae5 Bc4+-) 36...Be4 37.Ne4 Ke4 38.Ree5 Kd4 (38...Kf4 39.Ke2+-) 39.f4 1-0. Wutendes_Heer (1945) - bvamrx (1920), lichess.org, 2021.

4.a4 Nd7 5.e3 Ngf6 6.Nf3 c5 7.Be2 b6 8.c4 Bb7 (8...Bd6 9.Na3=) 9.0-0 dc4 10.Bc4 Bd6 11.d4 Qc7 12.Nbd2 0-0 (12...cd4 13.ed4 Bf3 14.Qf3=+) 13.h3 (13.dc5 Nc5 14.Bf6 gf6=) 13...Rac8 14.Be2 cd4 15.Nd4 Nc5 16.Bf3 e5 (16...Bf3 17.Qf3 Nd3 18.Ba3=) 17.Nc6 (better 17.Bb7!? Nb7 18.Nc6+-) 17...e4 18.Be2 Bc6 19.bc6 Qc6 (19...Be5 20.Be5 Qe5 21.Bb5=) 20.Bb5 (20.Bf6 gf6 21.Bg4=) 20...Qd5 (20...Qb7!? 21.Bf6 gf6=) 21.Bf6+= gf6 22.Nc4 (22.Ne4!? Bh2 23.Kh2 Qe4 24.Qe2+-) 22...Qd1= 23.Rad1 Bc7 24.Rd5 Rfd8 25.Rfd1 Kf8 (25...f5 26.Rd8 Rd8 27.Rd8 Bd8 28.Nd6=) 26.g3 Rd5 27.Rd5 Ke7 (27...Rd8 28.Rd8 Bd8 29.Nd6=) 28.Rh5 (28.Na5 Be5 (worse 28...ba5 29.Rc5 Kd6 30.Rc6 Kd5 31.Rc4+-) 29.Nc6 Ke6+=) 28...Ne6 (28...Bd8 29.Nd2=) 29.Rh7+= Bd8 (29...Ng5 30.Rh5=) 30.Rh5 (30.Rf7! Kf7 31.Nd6 Kg6 32.Nc8+-) 30...Rc5+= 31.Rh4 (better 31.Rc5 bc5 32.Bc6+=) 31...Rd5? (better 31...f5 32.Rh6 Kf8 33.Rh8 Kg7=) 32.Re4+- Rd1 (32...f5 33.Rh4+-) 33.Kg2 f5 34.Rh4 Kf6 35.Rh8 Ke7 (35...Kg7 36.Rh5+-) 36.Re8 Kf6 37.h4 (37.Kf3 Rd3 38.Ne5 Rc3 39.Nd7 Kg7+-) 37...Rc1 (37...Kg7 38.Kf3+-) 38.h5 Be7 (38...Rd1 39.Rg8 Ng5 40.h6+-) 39.h6 (39.Nb6 Bd6+-) 39...Ng5 (39...Bf8 40.Rb8+-) 40.Nb6 Nh7 (40...Bc5 41.Nc4 Bb4+-) 41.Nd5 Kg6 42.Re7 Kh6 (42...Ng5 43.Ra7+-) 43.Nf4 (43.Rf7!? Ng5 44.Rf5 Ne4+-) 43...Kg7 44.Rd7 (44.Ra7 Ng5+-) 44...Kf6 (44...Nf8 45.Ra7+-) 45.Rd5 Ng5 46.Rd4 (46.Bd3 Ne4 47.Ra5 Nc5+-) 46...Ne6 (46...Ne4 47.Nd3 Rc2 48.Rd5+-) 47.Rc4 (47.Rd6 Ke7 48.Rd7 Kf6+-) 47...Ra1 (47...Rc4 48.Nd5 Ke5 49.Bc4+-) 48.Ne6 (better 48.Rc6+-) 48...Ra2 (48...fe6 49.Rc6+-) 49.Rc6 (better 49.Nf4 Ra1+-) 49...fe6 50.Bc4 (50.Re6! Ke6 51.Bc4 Kd6 52.Ba2 Kc5+-) 50...Ke5 (50...Ra4 51.Be6 Ra1+-) 51.Re6 1–0. BeepBeepImAJeep (2700) – GianFresco (2395), lichess.org, 2015.

4.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a5).

4.e3 Nf6 5.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3).

4.e3 d5 5.Nf3 Nd7 6.c4 Ngf6 7.d4 Nb6 8.c5 Nc4 9.Bc4 dc4 10.Nbd2 Bd7 11.a4 (< 11.Nc4 Bb5 12.Nce5 Nd7+=) 11...Bc8 12.Nc4 Nd5 13.0-0 h6 14.Qc1 f5 15.Nce5 Bd7?? (better is 15...Qf6+-) 16.c6 (16.Ng6!? Qf6 17.Nh8 g6+-) 16...bc6 17.bc6 (17.Nc6?! Qf6+-; 17.Nd7?! Qd7 18.Ne5 Qd6+-) 17...Bc8 18.Ng6 Qf7 (18...Qf6 19.Nh8 g5+-) 19.Nh8 (19...Qf6 20.Ne5+-) 1–0. Wall,Bill – Tattoo, Microsoft Gaming Zone, 2004.

4.e3 f6 5.Nf3 g5 6.c4 Bg7 7.a4 h5 8.d4 f5 9.Be2 c5 10.Ne5 cd4 11.Bd4 Qb4 12.Nd2 Qd6 13.Bh5 Rh5 14.Qh5 Ke7 15.Ng6 Kd8 16.Qg5 Bf6 17.Bf6 Nf6 18.Qf6 Kc7 19.Nf3 b6 20.0-0 Bb7 21.Nfe5 Bg2 22.Kg2 Nc6 23.bc6 Rg8 24.cd7 f4 25.Kh1 fe3 26.fe3 b5 27.ab5 Qb6 28.Rfe1 Qb7 29.Nc6 Qa8 30.Qe6 Qf8 31.Qe5 Kb6 32.Qd4 Kc7 33.b6 Kb7 34.Nf4 Qg7 35.Qg7 Rg7 36.d8Q Kc6 37.Red1 Rb7 38.Rd6 Kc5 39.Qc8 Kd6 40.Qb7 Ke5 41.Qd5 Kf6 42.Rg1 Ke7 43.Qe6 Kd8 44.Rg7 1–0. axtur777 – Alx_Chess, lichess.org, 2019.

4.e3 d5 5.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3).

4.e3 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.e3 a5).

4.e3 c6 5.Nf3 Qf5 6.c4 cb5 7.cb5 b6 8.a4 Bb7 9.Be2 Nf6 10.0-0 Bd6 11.Nc3 Ng4 12.h3 Bf3 13.Bf3 Ne5 14.Ba8 g5 15.Ne4 Bc7 16.Ng3 Qg6 17.Be4 f5 18.Bc2 Qh6 19.f4 gf4 20.ef4 Ng6 21.Bh8 Nh8 22.Qh5 Qh5 23.Nh5 Ng6 24.Nf6 Ke7 25.Nh7 Nf4 26.Ng5 Ne2 27.Kf2 Nd4 28.Bd3 Kf6 29.Nf3 Nf3 30.Kf3 d5 31.Rac1 Bd6 32.Ke2 Nd7 33.Rc6 Be7 34.Rf5 Kg7 35.Re6 Bf6 36.Rd5 Ne5 37.Rde5 Be5 38.Re5 Kf6 39.Rf5 Kg6 40.g4 Kh6 41.Kf3 Kg6 42.Rc5 Kf6 43.Rc6 Kg5 44.Kg3 ½–½. Abdullaevich (1800) – welliton2121, lichess.org, 2018.

4.Nf3 Qb5 5.Qc1 Nc6 6.e3 Qh5 7.Be2 Qg6 8.0-0 Bd6 9.d4 a4 10.a3 Nge7 11.c4 Nf5 12.Bd3 Qh5 13.c5 Be7 14.Nbd2 0-0 15.e4 Nh6 0–1. Orang4Utan (1725) – DamienStClaire (1700), lichess.org, 2017.

3.a3 c5 4.bc5 Nf6 5.d4 Nc6 6.Nf3 b6 7.cb6 Qb6 8.Qc1 (8.Ra2 Rb8+=) 8...Bb7 (8...Rb8 9.Ra2=) 9.c4+= Be7 10.c5 Qc7 11.Nc3 0-0 (11...d6 12.cd6 Qd6 13.Qd1+=) 12.e3 (12.e4 Rfc8+/-) 12...d6 13.cd6 Bd6 14.Be2 Rac8 15.0-0 (15.e4 e5 16.d5 Nd4+=) 15...e5 16.d5 Ne7 (16...Na5!? 17.Qb1 Nb3+=) 17.e4+/- Qb8 18.Qd2 Ng6 19.g3 (19.Rab1 Nf4 20.Bd3 Nd3 21.Qd3 Rc5+/-) 19...h5 (19...Rc3 20.Qc3 Ne4 21.Qb3+/-) 20.Rfe1 h4 21.Bf1 Rfd8 22.Rab1 Qa7 (22...hg3 23.hg3 Rc7 24.Rec1+/-) 23.Na4 (23.Nh4 Nh4 24.gh4 Rc7+-) 23...hg3+/- 24.hg3 Ng4 (better 24...Rc7+/-) 25.Qg5?? (better 25.Bh3 Rc4 26.Bg4 Ra4 27.Bh5+-) 25...Qf2-+ 26.Kh1 Qf3 27.Bg2 Qg3 28.Qd2 Qh2 0-1. black_bishop_88 (2530) - Nezh2 (2030), 1st CL WorldCup Semifinal, lichess.org, 2020. (=1.a3 e6 2.b4 a6 3.Bb2)

3.a3 c6 4.Nf3 b5 5.e3 Bb7 6.Be2 d6 7.0-0 Nf6 8.c4 h6 9.cb5 ab5 10.d4 g5 11.h3 Bg7 12.Nbd2 Nfd7 13.Qc2 e5 (13...Nf6!?+=) 14.de5+/– de5 15.Rfd1 Qc7 (15...0-0+-) 16.Ne4 Na6?! (16...0-0+-) 17.Nd6 Kf8 18.Nb7 (better is 18.Qb3!? Nb6 19.Ne5 Nd5 20.Ndf7 Rh7+-) 18...Qb7 19.Qd3 Re8?? (better is 19...e4 20.Bg7 Kg7 21.Qe4 Rhe8+-) 20.Qd7 Qd7 21.Rd7 Rg8 22.Rad1 e4 23.Bg7 Rg7 24.Nd4 c5 25.bc5 Nc5 26.Rc7 Na4 27.Bb5 Nc3 28.Rc3 Rd8 29.Rdc1 f5 30.Nf5 Rf7 31.Nh6 Rf6 32.Ng4 Rg6 33.Rc8 Rc8 34.Rc8 Ke7 35.a4 Rd6 36.Rc7 Kd8 37.Rd7! Rd7 38.Bd7 Kd7 39.Nf6 Kc7 40.Ne4 Kb6 41.Ng5 Ka5 42.h4 Ka4 43.h5 Kb4 44.h6 Kc5 45.h7 Kd6 46.h8Q (46.h8Q Kc7 47.Qe5 Kb6 48.e4 Kc6 49.Qd5 Kc7 50.Ne6 Kb6 51.Qc5 Kb7 52.Qb5 Kc8 53.Qc6 Kb8 54.Qb6 Kc8 55.Qc7) 1–0. Fournier,Frederic (1880) – nachofranco, Active, 2008.

3.a3 Bd6?? 4.Bg7+- Be7 (4...Be5 5.Be5 Nf6 6.Bb2+-) 5.Bh8 Bf6 6.Bf6 Qf6 7.Nc3 d5 8.Nf3 Nc6 9.e3 e5 (9...Nge7 10.b5 ab5 11.Bb5+-) 10.Nd5 Qd6 11.c4 e4 (11...Be6 12.Qc2 h6 13.Bd3+-) 12.Ng1 (better is 12.Ng5!? Nf6 13.Nf6 Qf6 14.Ne4 Qe5+-) 12...Be6 13.d3 Bd5 14.cd5 Qd5 15.de4 Qe4 16.Nf3 h6 17.Bd3 Qg4 18.0-0 Nf6 19.Nd4! Nd4 20.Qg4 Ng4 21.ed4 0-0-0 (21...c6+-) 22.Bf5 Kb8 23.Bg4 Rd4 24.Bf3 f5 (24...c6 25.Rad1 Rd1 26.Rd1+-) 25.Rfd1 Rc4 26.Rac1 Rc1 27.Rc1 Kc8 28.Rc5 f4 29.Rf5 c6 30.Rf4 b5 31.Rf7 h5 32.Bc6 Kd8 33.f4 Kc8 34.f5 Kd8 (34...h4 35.f6 a5 36.Rb7 a4 37.f7 Kd8 38.f8Q) 35.f6 Kc8 36.Rd7 Kb8 (36...h4 37.f7 a5 38.f8Q) 37.f7 Kc8 38.f8R (38.f8Q) 1–0. Knight32 – glo1, ChessWorld.net, 2012.

3.a4 Bb4 4.Bg7 f6 5.Bh8 Kf7 6.e3 (better 6.c3 Bd6 7.e4 Nh6 8.Qh5 Kg8 9.Qh6 Kh8+-) 6...Ne7 (6...Nh6 7.c3 Bf8 8.Qf3+-) 7.Qh5 Ng6 (7...Kg8 8.Bf6 Qf8+-) 8.Qh7 Kf8 9.Qg6 (better 9.Qg7 Ke8 10.Qg6 Ke7 11.Bf6 Kd6 12.Bd8+-) 9...Qe7 10.Bf6 Qd6 11.Qg7 Ke8 12.Qg8 (12.Be2 Qd2 13.Nd2 Bd2 14.Kd2 d6 15.Qe7) 12...Qf8+- 13.Qf8 Kf8 14.Nc3 (14.h4 d5+-) 14...Kf7 15.Bh4 (15.Bd8 Ba5+-) 15...Bc3 16.dc3 Nc6 17.Nf3 Ne5 18.Ne5 (18.Ne5 Kg7 19.Bd8+-) 1-0. Bostonbliz (2600) - jsbabach1 (2600), Casual bullet game, lichess.org, 2022. (=1.b4 a6 2.Bb2 e6 3.a4)

3.a4 b5 4.ab5 Bb7 5.ba6 Na6 6.b5 Nc5 7.e3 (7.Ra8 Ba8 8.Nf3 Bf3 9.ef3 d5+/-) 7...Ra1+= 8.Ba1 Qa8 9.Bc3 Bg2 10.Qg4?? (better 10.Bg2 Qg2 11.Qf3 Qf3 12.Nf3+=) 10...Bf1 11.Bg7 Qh1 12.Bh8 (12.Kf1 Nh6 13.Bh6 Bh6 14.Qf3 Qf3 15.Nf3-+) 12...Nh6 13.Qg3 Bg2 14.Nc3 (14.d3 Nf5 15.Qc7 Qg1 16.Kd2-+) 14...Qg1 15.Ke2 Qf1 0-1. BeepBeepImAJeep (2720) - TwelveTeen (2620), lichess.org, 2016.

3.a4 b6 4.e3 Nf6 5.b5 Bb7 6.c4 Be7 7.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 a6 7.a4).

3.a4 c6 4.e3 Bb4?? 5.Bg7+- Qh4 (5...d5 6.Bh8 Nf6 7.Nf3+-) 6.Bh8 Bd6 (6...d5 7.Bd3+-) 7.Nf3 (7.Nf3 Qh5 8.a5+-) 1-0. DEFFM – GuestMXRW, freechess.org, 2021.

3.a4 Ne7 4.e3 Ng6 5.b5 f6 6.c4 (6.Bd3 Qe7=) 6...Be7 7.Nf3 0-0 8.Be2 c6 (8...b6 9.0-0=) 9.0-0 d5 10.d4 Qc7 11.Nbd2 Nd7 12.Qb3 Kh8 (12...b6 13.Rac1 cb5 14.ab5+- (14.cb5?! Qd8+=)) 13.Rfc1+- dc4 (13...Qa5 14.Bc3 Qd8 15.cd5 cd5 16.a5+-) 14.Nc4 Nb6 (14...ab5!? 15.ab5 Ra1 16.Ra1 cb5 17.Qb5 b6+-) 15.bc6+- Nc4 16.Rc4 (16.Qc4 Rb8+-) 16...e5 (16...bc6 17.Bd3+-) 17.d5 (17.cb7 Qb7 18.Qb7 Bb7 19.de5 Bf3 20.Bf3 Rab8 21.ef6 Bf6 22.Bf6 Rf6+-) 17...bc6 18.Rc6 (18.dc6?! Rb8 19.Qc2 Be6=) 18...Qd7 19.Ba3 (19.Rd1!?+-) 19...Ba3 (19...Bb7 20.Be7 Ne7 21.Rb6 Bd5 22.Rd1=) 20.Ra3 (20.Qa3 Qd5 21.Rd6 Qb7+=) 20...Bb7 21.Rc5 Rab8 (21...Rac8 22.Rc8 Rc8 23.e4 Rc1 24.Bf1+=) 22.Qc2 Bd5? White creates threats along the open d–file (better 22...Rfc8 23.e4 f5+-) 23.Rd3+- (23.Ba6 Bf3 24.gf3 Nh4=+) 23...Ne7 24.e4! Be4 Exploits the pin (better 24...Qb7 25.Rc7 Bb3+-) 25.Rd7 Discovered attack 25...Bc2 26.Rc2 (26.Re7?! Rb1 27.Bf1 Bd3+=) 26...Nf5 (26...Rb1 27.Bf1 Ng6 28.Ra7+-) 27.g4 Nh6 28.h3 Nf7 (28...a5 29.Rcc7 Rg8 30.g5 fg5 31.Bc4+-) 29.Rcc7 Ng5 (29...e4 30.Nd4 Rfd8 31.Rd8 Nd8 32.Ba6 h5+-) 30.Ng5 fg5 31.Rg7 Rb1 (31...Rf4 32.a5 Rc8 33.Rh7 Kg8 34.Rcg7 Kf8 35.Ra7+-) 32.Kg2 (32.Kg2 Rf4 33.Rh7 Kg8 34.Rh5+-) 1–0. BeepBeepImAJeep – Lerto (2005), lichess.org, 2016.

3.a4 h6 4.e3 d5 5.b5 a5 (5...Nf6 6.Nf3=) 6.Nf3 c6 7.Be2 c5 8.c4 Nf6 9.0-0 d4 (better 9...Bd6!?+=) 10.ed4+- cd4 11.Bd4 Be7 12.Qc2 b6 13.c5 Nbd7 (13...bc5!? 14.Bc5 Bc5 15.Qc5 Nbd7+/-) 14.c6+- Nc5 15.Bc5 (15.Nc3!? 0-0+-) 15...Bc5 16.d4! Bd6 (16...Bd4 17.c7 Passed pawn) 17.Nbd2 Qc7 18.Nc4 Bb4 19.Nfe5 0-0 20.Bd3 Nd5 21.Bh7 Kh8 22.Be4 Bc3 23.Rad1 Bb4 24.Rd3 Bd6 (24...Re8 25.Rc1+-) 25.Bd5 ed5 26.Nd6 Qd6 27.Rg3 Qf6?? (better 27...Qb4+-) 28.Rf3 Qe7 (28...Qe6 29.Ng6!! Kg8 30.Nf8+-) 29.Rf7! Rf7 (29...Rf7 30.Ng6 Double attack) 30.Ng6 Kg8 31.Ne7 Re7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.c4 Bb4?? 4.Bg7 d5 5.Nf3 dc4 6.Qa4 Nc6 7.a3 Ba5 (7...b5 8.Qc2 Nf6 9.Bh8+- (9.ab4?! Rg8 10.Bf6 Qf6+-)) 8.Qc4 Qd5 9.e3 Qc4 10.Bc4 Nf6 11.Bh8 (worse is 11.Bf6 Rg8 12.Bd3 h6+-) 11...Nd5 12.Bb2 b5 13.Bd5 ed5 14.0-0 (14.Ke2 Be6+-) 14...Bf5 15.d4 h6 16.Nc3 Be6 17.Rfc1 f6 (17...Ne7 18.h3+-) 18.Ne2 (18.Nb5 Kd7 19.Nc3 Rb8+-) 18...Bd7 19.Nf4 Ne7 20.Bc3 Bb6 21.Bb4 Nc6 (21...c6 22.Kf1+-) 22.Nd5 a5 (22...Kf7 23.Bd6!+-) 23.Bc5 (better is 23.Nf6 Kd8 24.Bf8 h5+-) 23...a4 (23...Kd8+-) 24.Bb6 cb6 25.Nc7 Ke7 26.Na8 f5 27.Nb6 Be8 28.Rc5 Ke6 29.Rac1 (better is 29.d5 Kd6 30.dc6 Bc6 31.Rf5 Kc7 32.Nd5 Kb8+-) 29...b4 30.ab4 (30.d5 Kf7 31.dc6 Bc6 32.Rc6 Kg7 33.Rd1 Kf8 34.Rd7 ba3 35.Rc8#) 30...Nb4 31.Re5 Kf6 32.Re8 a3 33.Ra1 Nc2 34.Ra2 Nb4+- 35.Ra3 Nc6 36.Nd5 Kf7 37.Raa8 h5 38.Ng5 Kg6 39.Rg8 Kh6 40.Nf7 Kh7 41.Nf6# 1–0. algernon (2165) – valerypavlovich (2100), net–chess.com, 2012.

3.e3 Bb4?? 4.Bg7 Be7 5.Bh8 Bf6 6.Bf6 Qf6 7.Nc3 d5 8.Nf3 Ne7 9.Be2 (9.d4 Nbc6+-) 9...Nd7 10.0-0 c5 11.d4 c4 (11...cd4 12.ed4 Ng6 13.Bd3+-) 12.a4 h5 13.Ne5 (13.e4 Qf4+-) 13...h4 (13...Ne5 14.de5 Qe5 15.Qd2+-) 14.Nd7 Bd7 15.h3 Bc6 16.Bf3 Kd7 17.e4 Rg8 18.ed5 ed5 19.Re1 Kc7 20.Rb1 Qd6 (20...Kd8 21.a5+-) 21.Re5 (21.Re7 Qe7 22.Nd5 Bd5 23.Bd5 Rb8+-) 21...f6 (21...Kd8 22.Qd2+-) 22.Re3 (22.Re7 Qe7 23.Nd5 Bd5 24.Bd5 Rb8 25.Bc4 Qd6+-) 22...Nf5 23.Re2 Qa3 (23...Rg7 24.Qd2+-) 24.Nd5 Kb8 25.Re6 Rg5 (25...Ka7+-) 26.Rc6 Qa4 27.Rcb6 (27.Rcb6 Rg7 28.Rb7 Rb7 29.Rb7 Kb7 30.Nc3 Qc6 31.Bc6 Kc6 32.Qf3 Kd6 33.Qf5 Ke7 34.d5 a5 35.Qe6 Kf8 36.Qf6 Kg8 37.d6 Kh7 38.d7 a4 39.d8Q a3 40.Qdh8) 1-0. brucepeng (2045) - LEONPIRU (2030), lichess.org, 2020.

3.e3 b6 4.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 a6).

3.e3 c5 4.bc5+= Bc5?? (better is 4...Nf6+= 5.d4 b6 6.cb6 Qb6 7.Bc1 Nc6 8.Nf3 Rb8) 5.Bg7+- Qb6 (5...d5 6.Bh8 Nc6 7.d4 Bb4 8.c3+-) 6.Bh8 Nc6 7.Nc3 Nb4 8.a3 Nd5 9.Na4 Qa5 10.Nc5 Qc5 11.Bd4 Qa5 12.e4 Ndf6 13.e5 Nd5 14.c4 Nde7 15.Nf3 Nc6 16.Bc3 Qc5 17.Qc2 Ne5 18.Be5 b5 19.Qh7 Qf8 20.Bg7 Nf6 21.Bf6 Bb7 22.Ne5 1–0. marre – MentalConfusion, internet, 2010.

3.e3 d5 4.c4 c6 5.a4 Nf6 6.b5 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4).

3.e3 d6 4.c4 b6 5.Nf3 h6 6.d4 Nd7 7.Bd3 Ne7 8.0-0+/– g5 9.Nbd2 Bg7 10.Qc2 Bb7 11.Rac1 g4 12.Ne1 h5 13.c5 Nf6 14.e4 Bh6 15.Rd1 b5 16.a4 Nc6 17.Qb3 ba4 18.Qa4 0-0 19.Nc2 h4 20.Qa1 a5+= 21.b5 Nb4 22.Nb4 ab4 23.Qb1 g3 24.Nf3 gf2 25.Kh1 Ng4 26.c6 Bc8 27.Bc1 Ne3 28.Be3 Be3 29.Qb4 h3 30.g3 e5+= 31.de5 Ra2= 32.Be2 Re2 33.Qc4 Re1 34.Ne1 Bg4 35.Qd3 Bd1 (35...Bd1 36.Qe3 fe1Q (36...fe1B?! 37.Rf6 Bh5 38.Qg5 Bg6 39.Rg6 fg6 40.Qg6 Kh8 41.Qh6 Kg8 42.Qg6 Kh8 43.Qh6 Kg8 44.Qg6=; 36...fe1N?! 37.ed6 Qd6 38.Re1-/+; 36...fe1R?! 37.Qe1 Bh5 38.ed6 Qd6 39.Qe3-+) 37.Qe1 Bh5-+) 0–1. Roldan,Antonio – Mary,Laurent, IECG, 1999.

3.e3 h6 4.a3 d6 5.c4 (5.Nf3 e5=) 5...Ne7 (5...a5 6.Nf3=) 6.Nf3 Nd7 7.d4 g5 (7...a5 8.b5+=) 8.d5 e5 9.e4 Ng6 10.Nbd2 Nf6 11.Bd3 (11.h3 Be7+=) 11...g4= 12.c5?? (better 12.Ng1=) 12...gf3-+ 13.Qf3? (13.Nf3 Nf4 14.g3 Nd3 15.Qd3 Bh3-+) 13...Nf4 (better 13...Nh4 14.Qd1 Ng2 15.Kf1 Bh3-+) 14.cd6 Bd6 (14...Qd6?! 15.Nc4 Nd3 16.Qd3-/+) 15.Nc4 (15.Bf1-+) 15...Bg4 16.Qg3 h5 (better 16...Rg8 17.Bc2 Bf5 18.ef5 Rg3 19.hg3 N4d5 (19...Ng2?! 20.Kf1-+) 20.Rh6 Bf8-+) 17.Ne5-/+ Nd3 18.Qd3 Qe7 19.Ng4? (better 19.f4!?=+) 19...hg4-+ 20.0-0?? (20.0-0-0 Rh5-+ (worse 20...Bh2 21.g3-/+)) 20...0-0-0 (better 20...Bh2 21.Kh1 Qf8 22.Qh3 gh3 23.g3-+) 21.Rfe1?? (21.e5 Be5 22.Qf5 Nd7-+) 21...Be5 (better 21...Bh2 22.Kf1 Be5 23.Be5 Qe5-+) 22.Be5 Qe5 23.g3 (23.Qg3 Rde8-+) 23...Nd7 (23...Qh5!? 24.h4 gh3 25.Rac1-+) 24.Rac1 (24.f4 gf3 25.Qf3 Nf6-+) 24...Qh5 25.Qc3?? (25.Kf1-+) 25...Qh2 26.Kf1 Do you see the mate threat? 26...Qh1 27.Ke2 Qe4 28.Kd1 Qd5 29.Kc2 c6 30.Red1 (30.Kb1 Rh2 31.Rc2 Qf5-+) 30...Qa2 (better 30...Qf5 31.Kb2 Rh2-+) 31.Kd3 (31.Qb2 Qe6 32.Kb1-+) 31...Qf2 (31...Nc5! 32.Ke3 Rde8 33.Qe5 Re5 34.Kf4 Qf2 35.Ke5 Re8 36.Kd6 Ne4) 32.Rd2 (32.Kc4 Rh2 33.Kb3 Qa2 34.Ka4 Nb6 35.Ka5 Rd1 36.Kb6 Qf2 37.Qc5 Rc1 38.Qf2 Rf2 39.Ka5 Kc7 40.b5 Rc4 41.b6 Kd6 42.a4 Rf5) 32...Qg3 (32...Qf5 33.Ke2 Rde8 34.Qe3 Qf3 35.Kd3 Re3 36.Kc2 Ra3 37.Kb1 Qe4 38.Rdc2 Rh2 39.b5 Qb4 40.Rb2 Qb2) 33.Kc2 Qc3 34.Kc3 Nb6 (34...Nb6 35.Rd8 Rd8-+) 0–1. sirgeshdb (1895) – Val_1 (1895), lichess.org, 2020.

3.e4 Bb4?? 4.Bg7 h5 5.Bh8 Nh6 (5...Qh4 6.Qf3+-) 6.Qh5 Ng8 (6...Bf8 7.g4 Qe7 8.g5+-) 7.e5 (better is 7.Bg7 Nc6+-) 7...d6 (7...Nc6 8.Nf3 Bf8 9.Qh7+-) 8.Qh7 (better is 8.Qg4 Ne7 9.Qb4 Nbc6+-) 8...Ke7 (8...Qg5 9.c3 Bc5 10.Nf3+-) 9.Qg7 (better is 9.Qh4 Ke8 10.Qb4 de5+-) 9...de5 10.Nf3 (10.h4 Nc6+-) 10...e4 (10...Nc6 11.Ne5 Ne5 12.Qe5+-) 11.Ne5 Nc6 (11...Qe8 12.Nc3 e3 13.Ne4 ed2 14.Kd1+-) 12.c4 (better is 12.Qf7 Kd6 13.Nc4 Kc5+-) 12…Nd4 (12...Nd4 13.Qg5 f6 14.Qg7 Kd6 15.Nf7 Kd7 16.Nd8 Ne7+-; 12...Ne5 13.Qe5 Bd7+-). Pumphut – Anji, internet, 2003.

3.e4 d5 4.ed5 (4.Nc3 Nf6 (4...d4 5.Nce2 Nc6 6.Nf3 e5 7.c3 dc3 8.Nc3 Nf6 9.b5 ab5; 4...Nc6 5.ed5 ed5 6.Nf3 Nf6 7.a3 Bd6 8.Bd3 Qe7 9.Qe2 Qe2) 5.e5 Nfd7 6.Nf3 Bb4 7.Be2 c5 8.a3 Ba5 9.d4 Nc6) 4...Qd5 (4...ed5 5.Nf3 Nf6 6.a3 Bd6 7.Bd3 Qe7 8.Qe2 Qe2 9.Ke2 0-0; 4...Nf6 5.Nf3 ed5 6.Bd3 Bb4 7.Qe2 Be7 8.Bf6 gf6 9.0-0 Nc6) 5.c4 (5.Nc3 Qe5 (5...Qd6 6.a3 Nf6 7.Nf3 Nc6 8.Bd3 Be7 9.0-0 0-0) 6.Qe2 (6.Be2 Nf6 7.Nf3 Qd6 8.b5 Qb6 9.a4 Bb4) 6...Qe2 7.Nce2 (7.Be2 Nc6 8.a3 Nf6 9.Nf3 Bd6) 7...Nc6= (7...Bb4? 8.Bg7 Nc6 9.Bh8+-; 7...Nf6 8.a3 a5 9.b5 Bd6) 8.a3 Nf6 9.Nf3 Bd7) 5...Qe4 6.Qe2 (6.Be2 Qg2 7.Bf3 Qg6 8.Ne2 Nf6 9.Qa4 Bd7) 6...Qg6 (6...Qc2 7.Be5 f6 8.Na3 Qa4 9.Bb2 Nc6) 7.a3 (7.Nf3 Nc6 8.a3 Qc2 9.d4 Nb4) 7...c5 (7...Nc6 8.Nf3 Nf6 9.Nc3 Bd6) 8.b5 (8.Qe5 Nc6 (8...cb4 9.Qg3 Nc6) 9.Qe2 (9.Qg3 cb4) 9...Nf6-/+ – (9...cb4-/+); 8.Nc3 Nf6 9.Nd5 Nd5) 8...Be7 (8...ab5 9.cb5 Nd7) 9.Nf3 (9.Nc3 Nf6) 9...Nd7 (9...ab5+=) 10.d4 ab5 11.cb5 Bf6 12.dc5 Ra4 13.Kd1 (13.Bf6 Qf6 14.Ra2 Nc5=) 13...Nc5 14.Qc2 (14.Ne5 Qf5 15.Ke1 Re4-+) 14...Qc2 15.Kc2 Ne4 16.Nc3 Nf2 17.Na4 Nh1 18.Nb6 Ne7 (18...Bb2 19.Kb2 Ne7 20.Rc1=) 19.a4 (19.Bf6 gf6 20.Bd3 Nf2=) 19...0-0 (19...Bb2 20.Kb2 Nf2 21.Rc1=) 20.a5 (better is 20.Bf6 gf6 21.Bd3=) 20...Nd5?? (better is 20...Bb2!? 21.Kb2 Nd5+=) 21.Nd5+= ed5 22.Bf6 gf6 23.a6 b6 24.Bc4 dc4+/– 25.Rh1 Rd8 26.Rd1 Bf5+= 27.Kc1 Bd3 28.Ne1 Kf8 29.Nd3 cd3 30.Kd2 Ke7 31.Rc1 Kd6? 32.Rc6 Kd5 33.Rb6 Kc4 34.a7 Rg8 35.g3 Ra8 36.Rb7 Re8 37.Rb8 (37.Rb8 Re2 38.Kd1+-) 1–0. Stabenow,Juergen – Diener,Rudolf, corr SOK–87–08, 1988.

3.e4 d6 4.Nf3 h6 (4...d5 5.ed5 ed5 6.Qe2 Qe7 7.c4=) 5.Bc4 (5.Nc3 Nc6+=) 5...Qe7 (5...Nf6 6.Nc3=) 6.0-0 (6.a3 d5 7.ed5 ed5 8.Be2 Be6+=) 6...e5 (6...d5!? 7.ed5 Qb4=) 7.Nc3 g5? (better is 7...Nf6+=) 8.Nd5+- Qd8 9.d4 (9.Ne5 Rh7 10.Ng4 Bg7+-) 9...Bg7 (better is 9...c6 10.Ne3 g4+/–) 10.de5+- de5 11.Be5 Be5 12.Ne5 Bd7?? 13.Nc3 f6?? 14.Nf7 Qe7+- 15.Nh8 Nc6 16.Ng6 Qb4 17.Qd3 0-0-0 18.Nd5 Qd6 19.Rad1 Nge7 20.Nge7 Ne7 21.Ne7 Qe7 22.Ba6 ba6 23.Qa6 Kb8 24.Rb1 (24.Rb1 Qb4 25.Rb4 Bb5 26.Rb5#) 1–0. TriAngel – UncleTupelo, ICC, 1999.

3.Nf3 Bb4?? 4.Bg7+- Nh6 5.Bh8 (worse is 5.Bh6 d5+-) 5...Ng4 6.a3 Bc5 7.d4 Bb6 8.e4 Ke7 9.Bg7 Qg8 10.Be5 d6 11.Bg3 f5 12.e5 Bd7 13.h3 Nh6 (13...Ba5 14.Nbd2 Nh6 15.c4+-) 14.ed6 cd6 15.Qd2 Nc6 (15...Nf7 16.Qb4 Bb5 17.c4+-) 16.Qh6 Re8 (16...Bc7+-) 17.Bh4 Kf7 (17...Qg5 18.Bg5 Kf7 19.Qh7 Kf8 20.Bh6#) 18.Qf6# 1–0. b4_player (2185) – Ruz_t_Shackleford (1695), GameColony.com, 2003.

3.Nf3 b6 4.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 a6).

3.Nf3 c5 4.bc5+= Nc6 (4...Nf6 5.Ba3+=) 5.d4 Qc7 (5...b6 6.cb6 Qb6 7.Bc1+=) 6.Nc3 (6.e4 d6+/–) 6...d6 7.cd6 Bd6 8.e4 (8.d5 Nd8+/–) 8...Qb6 (8...Nge7 9.Bd3+/–) 9.Rb1 Qc7 (9...Qa5 10.Be2+/–) 10.e5 (10.Be2 b5+/–) 10...Be7 (10...Bb4 11.Qd2+/–) 11.Bd3 Qa5 (11...b5 12.0-0+/–) 12.0-0 Bb4 (12...Nb4 13.Be4+/–) 13.Qd2 Nd4? (better is 13...b6+-) 14.Nd4 Qe5 15.Rfe1 Qd4 (15...Qa5+-) 16.Bb5! Bd7 (16...ab5 17.Qd4) 17.Qd4 (17.Qd4 Bb5 18.Qg7 Bc3 19.Bc3+-) 1–0. Wall,Bill – Northbound, internet, 2003.

3.g3 Nc6 4.a3 Nf6 5.Bg2 Be7 6.e3 d5 7.Ne2 b5 8.Nbc3 Ne5 (better is 8...0-0!?+=) 9.Nd5+/– Bd6?? (better is 9...ed5 10.Be5 0-0+/–) 10.Nf6+- Qf6 11.Ba8 Nf3 12.Kf1 Qb2 13.Bf3 0-0 (13...Qf6 14.Bc6 Kf8 15.Kg2+-) 14.Nc3 (14.Nc3 Bb4 15.ab4 Qb4 16.Kg2+-) 1–0. marekt – Heimdallr, ChessWorld.net, 2012.

3.g3 Nf6 4.a3 d5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.g3 a6).

4.Nc3 Be7 5.Nf3 Bb7 6.e4 d6 7.d3 Bf6 8.Be2 Nc6 9.0-0 Nd4 10.Nd4 Bd4 11.h3 Ba7?? (11...c5 12.Qd2=) 12.Bf3 (better is 12.Nb5!? Nf6 13.Na7 Ra7 14.Bd4+-) 12...f6 (12...Bd4 13.a4=) 13.Ne2 Ne7 (13...e5 14.d4+=) 14.Ng3 (14.Nf4 Kf7 15.Bh5 g6+/–) 14...h6 (better is 14...0-0!?=) 15.Bh5+/– g6 16.Bg4 Qd7 (16...e5 17.Be6+=) 17.Bf6+/– Rg8 (17...0-0 18.Bb2+/–) 18.c4 h5 19.Bf3 bc4 20.dc4 e5 21.Be7 (21.Be2 Qe6 22.Bg5 Bd4+/–) 21...Qe7 22.Rc1 Qh4 (22...Rf8 23.Rb1+/–) 23.c5 dc5 24.bc5 Rd8?? (24...Rg7 25.Qa4 c6 26.Be2+/–) 25.Qa4 (better is 25.Qb3 Bd5 26.ed5+-) 25...c6+/– 26.Rfd1 Rd1 27.Rd1 Rg7 28.Rd5 Qe7 29.Ne2 Attacking the isolated pawn on c5 29...Kf8 30.Nc1?? Bc5 31.Rd3= Qh4 32.Kh2?? Bf2?? 33.Qb4 Kg8 34.Bd1 Qf4 35.Kh1 Qc1?? 36.Rd8+- Kh7 37.Qf8 Kh6 38.Qh8 Rh7= 39.Qe5?? Bh4 40.g4?? Bd8 41.Qd4 Bg5 (41...Bg5 42.gh5 c5-+; better is 41...c5!? 42.Qd3 Be4 43.Qe4 Qd1 44.Kg2 Qd2 45.Kh1-+) 0–1. I need chocolate... – kingsknight59, ChessWorld.net, 2005.

4.e3 Bb7 5.Nf3 Nf6 6.Be2 d5 7.0-0 Nbd7 8.d3 Bd6 9.c4 dc4 10.dc4 bc4 11.Bc4 0-0 12.Nd4 Ne5 13.Be2 Rc8 14.Nd2 c5 15.bc5 Rc5 16.Qb3 Bd5 17.Qb6?? Qb6-+ (17...Qb6 18.Rab1 Ba2-+) 0–1. elsh1403 (1620) – delcrimar, kurnik, 2011.

4.Nf3 Bb7 5.c4 bc4 6.Nc3 d5 7.d4 cd3 8.Qd3 Nf6 9.e3 Bd6 10.Be2 0-0 11.h3 Nbd7 12.0-0 c5 13.bc5 Nc5 14.Qc2 Rb8 15.Na4 Qe7 16.Nc5 Bc5 17.Bd4 Ne4 18.Bd3 Rfc8 19.Bc5 Rc5 20.Qe2 Nc3 21.Qe1 e5 22.Nd2 e4 23.Be2 a5 24.Nb1? Ne2 25.Qe2 Qf6 26.Ra2 Ba6 27.Qg4 Bf1 28.Nd2 Bc4 29.Nc4 Rc4 30.g3 Qf3 31.Qf3 ef3 32.Rd2 Rc1 33.Kh2 Rbb1 34.g4 g5 35.Kg3-+ Rc3 36.Kf3 Ra3 37.Rd5 a4 38.Rg5 Kf8 39.Ra5 Rb2 40.Ra8 Kg7 41.Ra5 Raa2 42.Rg5 Kh6 43.h4 Rf2 44.Ke4 Rab2 45.Rh5 (45.Rh5 Kg7 46.Rg5 Kf8 47.Kd4-+) 0–1. iczker – delcrimar (1640), kurnik, 2011.

(--> 1.b4 e6 2.Bb2 Nf6 3.a3 a6).

4.Nf3 c5 5.c3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.c3 a6).

4.Ra3 Bb4-/+ 5.Rg3 Bf8 6.Na3 c6 7.Qa1 d5 8.Nf3 Nbd7 9.h4 b5 10.a5? c5 11.h5 d4 12.c3 Ne4 13.Rg4 f5 14.Re4? fe4 15.Nh4 Be7 16.g3 Bh4 17.Rh4 e5 18.Re4 Bb7 19.Rg4 Qf6 20.cd4 cd4 21.e3 de3 22.de3 0-0-0 23.Bh3 Kb8 24.Rb4 Rhe8 25.Nb5 ab5 26.Rb5 Qc6 27.Bf1 Ka7 28.Be5?? Ne5 29.Re5 Re5 30.Qe5 Rd5 31.Qb2-+ Qd6 32.Be2 Ba6 33.Qg7-/+ Qd7 34.Qb2? Be2-+ 35.Qb6? Ka8 36.Ke2 Rd6 37.Qc5 Rd2-/+ 38.Kf1 Rd1 39.Kg2 Qd5 40.Qd5 Rd5 41.f4 Ra5 42.Kf3 Kb7 43.g4 Ra4 44.f5 Kc6 45.e4 Kd6 46.Kf4 Ke7 47.g5 Kf7 48.f6?? Ra5 49.e5-/+ Ra4?? 50.Kf5+/– Ra5 51.g6 hg6 52.hg6 Kg8 53.f7 Kg7 54.Ke6 Ra6 55.Ke7 Ra7 56.Ke6 Ra6 57.Ke7 Ra7 58.Ke6 Ra6 ½–½. xtom (1635) – ita1979 (1620), kurnik, 2011.

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.a4).

4.b5 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.c4 ab5 5.cb5 c6 6.a4 cb5 7.ab5 Ra1 8.Ba1).

4.b5 ab5 5.ab5 Ra1 6.Ba1 d5 7.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1).

4.b5 ab5 5.ab5 Ra1 6.Ba1 Be7 7.e3 0-0 8.Nf3 d5 9.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

4.b5 ab5 5.ab5 Ra1 6.Ba1 Be7 7.e3 c6 8.c4 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 Be7).

4.d3 Nf6 5.Nd2 d5 6.Ngf3 c6 (6...Be7 7.e4-/+) 7.e4 de4 8.de4 Be7 9.e5 Nd5 10.c4 bc4 11.Bc4 b5 12.Bd5 cd5 13.0-0 0-0 14.Qb3 b4 (14...Qa5 15.Rfc1-/+) 15.a3=+ ba3 16.Ba3 Ba3 17.Ra3 Ra3 18.Qa3 Nc6 19.Rc1 Ne7 20.Nd4 Ng6 21.Qe3 Ba6 22.N2f3 Qb6 23.h3 h6 24.Rc6 Qb1 25.Kh2 Bc4 26.Nd2 Qd1 (better 26...Qd3 27.Qd3 Bd3-/+) 27.N2b3?? (better 27.Nc4 dc4 28.Rc4=) 27...Bb3-+ 28.Nb3 Ra8 (28...Ne5!? 29.Qe5 Qb3 30.f4-+) 29.Rc1-/+ Qh5 30.Nd4? (better 30.f4!?-/+) 30...Qe5-+ 31.g3 Qe3 32.fe3 Ra2 33.Kg1 Ne5 34.Rc7 g6 35.Nb5 (35.Rc2 Rc2 36.Nc2 f5-+) 35...Nc4 (better 35...Re2 36.Rc3-+) 36.Rc5 (36.e4 Ne3 37.ed5 Rg2 38.Kh1 ed5-+) 36...Re2 (better 36...Ne3!? 37.Kh1-+) 37.Rc8 Kg7 38.Nd4 (38.e4 Re4 39.Kf2 Kf6-+) 38...Re3 39.Nc2 (39.Kf2 Rd3 40.Nb5 Rd2 41.Kf1 Rh2-+) 39...Re2 (better 39...Rg3!? 40.Kh2 Rd3 41.Nb4 Rd2 42.Kh1-+) 40.Nb4 (40.Nd4 Rd2 41.Nf3 Ra2-+) 40...Rb2 41.Nd3 (41.Nc6 Ne3 42.Kh1 Kf6-+) 41...Rd2 (41...Rb3!? 42.Nc5 Rg3 43.Kh2-+) 42.Nf2 Ne3 43.Ng4 (43.Re8 d4-+) 43…Ng4 (43...Ng4 44.hg4 Kf6-+) 0-1. Antares_Sco (1870) - grayfolk (2180), Rated Blitz game, lichess.org, 2016.

4.e3 b4 5.a4 Nf6 6.a5 (6.Nf3 d5-/+) 6...c5 (6...Nc6 7.Nf3-/+) 7.Nf3 Ra5 8.Ra5 Qa5 9.Bc4 (9.Be2 d5-/+) 9...d5-+ 10.Bb3? (better 10.Be2-+) 10...c4 11.Bc4 (11.Bf6 gf6 (11...cb3?! 12.Be5 bc2 13.Qc2-+) 12.0-0 cb3 13.cb3 e5-+) 11...dc4 12.Qe2 (12.Bf6 gf6 13.Rg1 e5-+) 12...b5 (better 12...Qa2 13.0-0 Qb2 14.Qc4-+) 13.Nd4 (13.Bf6 gf6 14.0-0 Bb7-+) 13...Bd7 (13...Qa2 14.0-0 Qb2 15.Qf3-+) 14.0-0 (14.Qd1 Be7-+) 14...Nc6 (better 14...Qa2 15.Bc3-+) 15.d3 (15.Nc6 Bc6 16.Bf6 gf6-+) 15...c3 16.Bc1 (16.Nb3 Qa6 (16...cb2?! 17.Na5 Na5 18.Qf3=+) 17.Nc3 bc3 18.Bc3 e5-+) 16...Nd4 (better 16...Qa2!? 17.Qf3 Nd8 18.Bd2 cd2 19.Qd1-+) 17.ed4 Bd6 18.Be3 (18.Qf3 Qc7 19.h3 Bc6-+) 18...0-0 (18...Qc7 19.h3-+) 19.Qf3 (19.Bg5 Nd5 20.Rc1 Qa2-+) 19...Nd5 20.Re1 (20.Rc1 Qc7-+) 20...Qa2 21.h3 (21.Qd1 b3! 22.cb3 c2-+) 21...Qc2 22.Rc1 Qd3 23.h4 (23.Rd1 c2 24.Rd3 cb1Q 25.Rd1 Qg6-+) 23...Bc6 (23...c2 24.Nd2 b3 25.Nb3 Qb3 26.Qe2 Ne3 27.Qe3-+) 24.Nc3 (24.Bg5 Qf3 25.gf3 h6-+) 24...bc3 25.Rf1 b4 (better 25...Ne3 26.Qe3 Bh2 27.Kh2 Qf1 28.d5 Bd5 29.f3-+) 26.Rd1 Ne3 27.Rd3 Bf3 28.gf3 c2 29.fe3 (29.Re3 c1Q 30.Kg2 Ra8 31.Re2 Ra1 32.Re5 Qg1 33.Kh3 Qf2 34.h5 Rh1 35.Kg4 Qh4) 29…c1Q (29...c1Q 30.Kf2 Qc2 31.Ke1 Bg3 32.Kf1 Qf2) 0-1. chessbit - dragonwelb (2340), Hourly Bullet Arena, lichess.org, 2019.

4.e4 b4 5.Qg4 (5.a3 ba3 6.Ra3 Na6=+) 5...Nf6-/+ 6.Qh4 Be7 7.e5 Nd5 8.Qg4 g6 (8...0-0 9.a3-/+) 9.h4 (9.a3 f5 10.Qf3 Nc6-/+) 9...h5 10.Qg3 Nc6 11.Bd3 Rg8 12.Nf3 d6 13.a3 (13.Be4 de5 14.Ne5 f5-/+) 13...de5 14.ab4 Ra1 15.Ba1 Ndb4 16.Ne5 (16.Be4 Nd4 17.Kd1 Nbc6-/+) 16...Ne5-+ 17.Be5 Nd3 18.cd3 Bd6 (18...c5 19.Bc7 Qd4 20.Nc3-+) 19.d4 Be5 (19...f6!? 20.Bd6 Qd6-+) 20.de5-/+ Qd3?? (better 20...Bd7-/+) 21.Qd3+- 1-0. the_phoenix (2485) - Berthe (2440), Rated Bullet game, lichess.org, 2016.

4.a3 b6 5.d4 a5 6.b5 d5 7.e3 Bd6 8.Nc3=.

4.a3 b6 5.e3 Bb7 6.Nf3 Be7 7.Be2 d6 (7...0-0 8.Nc3= (8.0-0=); 7...d5 8.d4=) 8.d4 (8.0-0=) 8...Nbd7 9.0-0 Rc8 10.a4 (10.Nc3 0-0=) 10...0-0 11.a5 (11.b5 c5=) 11...Ra8 (11...ba5 12.ba5 Rb8 13.Ra2=) 12.Nbd2 (12.Qa4 c5=) 12...c5 13.Bc3 (13.Qa4 cb4 14.Qb4 Rb8=) 13...Ne4 (13...cb4 14.Bb4 Qc7 15.Bd3=) 14.Ne4+= Be4 15.ab6 (15.Nd2 Bg6=) 15...Nb6 (15...cb4 16.b7 Bb7 17.Bb4=) 16.bc5 dc5 17.Ba5 Qd6 18.Nd2 Bb7 (better is 18...Bf5 19.dc5 Qc5+-) 19.Nb3?? (19.Qb3 Bd8 20.Rfb1 Bc7+-) 19...Qc7? (better is 19...Nd7=) 20.Rb1 (20.dc5 Bc5 21.Nc5 Qc5+-) 20...Be4 21.dc5 Bc5 22.Nc5 Bb1 23.Qb1 Qc5 24.Bb6 Qc8 25.c5 Rb8 26.Qa2 Qd7 27.Rd1 Qc6 28.Rd6 Qe8 29.Ba6 Ra8 30.Qc4 Qe7 31.g3 Qf6 32.Rd1 Qf3 33.Rd2 Qf6 34.Kg2 Qa1 35.Qa2 Qe5?? 36.Rd4+- Qf6 37.Qc4 e5 38.Rd6 Qe7 39.Qe2 e4 40.Rd4 h6 41.c6 Rfb8 42.Rd7 Qf6 43.Bb7 Rb7 44.cb7 Re8 45.Bc7 Qc6 46.Re7! Re7 47.b8Q Re8 48.Qb6 Qd7 49.Qeb2 Qf5 50.Bf4 Qg4 51.Q6d4 Re6 52.h3 Qg6 53.Qb8 Kh7 54.Qdd8 Qf5 55.Qh8 Kg6 56.Qbg8 (56.Qbg8 Qh3 57.Kh3 Re7 58.Qgg7 Kf5 59.Qf6; 56.Qbf8 Kh5 57.Qhg7 Qh3 58.Kh3 Rg6 59.Qh6 Rh6 60.Qh6) 1–0. Nordbrink,Juergen – Filor,E, corr, 1980.

4.a3 b6 5.Nf3 Nc6 6.Nc3 Bd6 7.e4 0-0 8.d4 Bf4.

4.a3 b6 5.Nf3 d5 6.e3 dc4 7.Bc4 b5 8.Be2=.

4.a3 Nc6 5.Nf3 d5 6.cd5 ed5 7.e3 Bg4 8.h3 Bf5.

4.a3 d5 5.e3= (5.cd5 ed5 6.Nf3 Nc6 7.e3 Bf5 8.Nc3 Bd6) 5...a5 6.b5 Bd6 7.Nf3 Nbd7 8.d4 0-0.

4.a3 Bd6 5.Nf3 Nc6 6.Nc3 0-0 7.e3 b6 8.Bd3 Bb7.

4.a3 Be7 5.Nf3 Nc6 6.Nc3 0-0 7.e3 d5 8.Bd3 dc4.

4.Qa4 b6 5.Nf3 Bb7 6.Nc3 Nc6 7.a3 Bd6 8.e3 0-0.

4.Qb3 c6 5.a4 Qe7 6.b5 Qb4 7.Qb4 Bb4 8.e3 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 Be7 12.Nf3 d5 13.d4 Bd6 14.Bd3 0-0 15.Nbd2 Bb4 16.Ke2 Bd7 17.Rc1 Rc8 18.Rc8 Bc8 19.Ne5 Bd2 20.Kd2 Nfd7 21.f4 Ne5 22.fe5 Nd7 23.e4 b6 24.ed5 ed5 25.Bb2 Nf8 26.Ke3 Be6 27.Ba3 Ng6 28.Bd6 f5? 29.ef6! gf6 30.Bc7 Nh4 31.g3 Nf5 32.Bf5 Bf5+/– 33.Bb6 Bd7 34.Bd8 Bb5 35.Bf6 Kf7 36.Bh8 Kg6 37.Kf4 h5 38.Be5 Bd3 39.Bc7 Be4 40.Bd8 Bh1 41.h3 Be4 42.g4 hg4 43.Kg4 Bg2 44.h4 Be4 45.h5 Kh7 46.Bg5 Bd3 47.Kf4 Be2 48.h6 Bf1 49.Ke5 Bg2 50.Kf6 Bh1 51.Bf4 Bg2 52.Bg5 Bh1 53.Bf4 Bg2 54.Bg5 ½–½. carocan (1700) – tomborell, kurnik, 2011.

4.Qb3 Be7 5.d4 d5 6.c5 0-0 7.Nf3 Ne4 8.Nbd2 Nc6 9.e3 f5 10.Bd3 Bf6 11.Rd1 Bd7 12.0-0 Qe8 13.Bc3 g5 14.Ne5 (better is 14.Bb2=) 14...Ne5-/+ 15.de5 Ba4 (15...Nc3?! 16.Qc3 Bg7 17.f4=) 16.Qb2 Nc3 17.Qc3 Bd1 18.Rd1 Bg7 19.f4 gf4 20.ef4 Bh6 21.Qd4 (21.Rf1!?-/+) 21...Qa4-+ 22.Rb1 a5 23.g3 ab4 24.Qb4 Qb4 25.Rb4 Rfb8 26.Rb2 Bf8 27.Nb3 Ra3 28.Kf1 Rba8 29.Bb1 R8a4 30.Ke2 Rb4 31.Rc2 Rc4 32.Rc4 dc4 33.Nd4 Kf7 34.c6 bc6 35.Nc6 (better is 35.Nf3 Bc5 36.Nd2-+) 35...Bc5 36.Nd8 (36.Kd1 Ke8-+) 36...Ke7 37.Nc6 Kd7 38.Nb8 Kc8 39.Nc6 Kd7 (39...Ra6!? 40.h3 Rc6 41.g4-+) 40.Nb8 Kc8 41.Nc6 Ra6 42.Kd2 (42.h3 Rc6 43.g4 Rb6-+) 42...Rc6 43.Kc3 Bg1 0–1. Arlt,Ronald (1725) – Denker,Stephan (2035), Bad Harzburg op, 2007.

4.c5 Nc6 5.a3 d6 6.cd6 Bd6 7.Nf3 e5 8.e3 Bg4 9.Be2 Bf3 10.Bf3 e4 11.Be2 Nd7 12.Qc2 Qh4 13.g3 Qe7 14.Nc3 Nf6 15.Bc4 Ne5 16.Be2 Qe6 17.Ne4 h6 18.Nf6 Qf6 19.f4 0-0-0 20.Be5 Be5 21.fe5 Qe5 22.0-0 g5 23.d4 Qe6 24.Qf5 h5 25.Bc4 Qf5 26.Rf5 g4 27.Raf1 h4 28.Rf7 hg3 29.hg3 Rde8 30.Re1 Rh3 31.Kg2 Rh6 32.Rg7 Reh8 33.Rg4 Rh2 34.Kf3 Kb8 35.Rg8 Rg8 36.Bg8 Rh6 37.e4 Rf6 38.Kg2 Rc6 39.Re3 Rc2 40.Kf3 Rc1 41.e5 Rf1 42.Kg2 Rd1 43.e6 Rd2 44.Kf3 Rd4 45.e7 1–0. purplegadge (1680) – rbatiste, gameknot.com, 2014.

5.Qb3 cb4 6.ab4 Nc6 7.b5 Ne7 8.ba6 Ra6 9.Ra6 ba6 10.e3 Nf5 11.d4 d5 12.c5 Ne4 13.Bd3 Qa5 14.Nc3 Bc5? (14...Nh4!?+=) 15.dc5 (better is 15.Be4!? Qb4 16.Qc2 de4 17.dc5+-) 15...Nc5+/– 16.Qc2 Nd3 17.Qd3 Qb4 18.Qd2 d4 19.ed4 Nd4 20.Nge2 e5 21.0-0 (better is 21.Nd4!? Qd4 22.Qd4 ed4 23.Ne4+-) 21...0-0+/– 22.Nd4 ed4 23.Ne4 Qd2 24.Nd2 d3 25.Rd1 Bd7 26.Nf3 Bb5 27.Ne1 Rd8 28.f3 (better is 28.Rd2+=) 28...d2-/+ 29.Nc2?? (29.Bc3 de1Q 30.Re1 Rc8-/+) 29...Ba4 (29...Be2 30.Ne3 Bd1 31.Nd1-+) 30.Ne3?? (better is 30.Bc3-/+) 30...Bd1-+ 31.Nd1 Rc8 32.Bc3 a5?? (better is 32...Re8 33.Kf2 Re1-+) 33.Kf2+= (33.Bd2? Rd8 34.Ba5 Rd1 35.Kf2 f6-+) 33...a4 34.Ke2 (34.Bd2? a3 35.Nc3 a2 36.Na2 Rc2-+) 34...a3 35.Kd2 a2 36.Ba1 Rb8 37.Ne3 Rb1 38.Nc2 Rg1 ½–½. Kulik,Roman (1940) – Salamon,Jan (1890), Polfinal Mistrzostw Polski Niewidomych Poland, 2008.

5.bc5 Bc5 6.d4 Be7 7.Nc3 0-0 (7...d5 8.e3= (8.cd5 ed5) 8...Nc6; 7...Nc6 8.Nf3 0-0) 8.Nf3 (8.e4 d5 9.e5 Ne8=) 8...d5 (8...Nc6=) 9.c5. algernon (2175) – pushtiu (2230), net–chess.com, 2010.

5.bc5 Bc5 6.e3 0-0 7.Qc2 Be7 8.Nf3 d5 9.cd5 Qd5 10.Nc3 Qd8 11.g4 (11.d4!?=) 11...Ng4=+ 12.Rg1 Nf6 13.Ne4 Nbd7 14.Neg5 h6 15.h4? (15.Nh7 Re8=+) 15...Bd6?? (better 15...hg5 16.hg5 Nd5-+) 16.Ne4=+ Be7 17.Neg5 Bd6?? (better 17...hg5 18.hg5 Nd5-+) 18.Nh7 (18.Ne4!? Bb8 19.Rc1=+) 18...Re8=+ 19.Nf6 Nf6 20.Ne5 Be5 (20...Rf8!?=+) 21.Be5= Kh8 22.Rb1 Rg8 23.Qc3 Ne8 24.Qd4 (24.Bg2 A) 24...Qh4? 25.Rh1 (25.Bb7?! Bb7 26.Rb7 Qh5=) 25...Qg5 26.Bf4+-; B) 24...f6 25.Bh2 e5=) 24...Qd4 25.Bd4 f6 26.Bg2 Exerts pressure on the backward pawn 26...Nc7 (26...e5 27.Bc5 Nc7 28.h5=) 27.Ke2 Rb8 28.Bc5 Nd5 29.Bd6 Ra8 30.Rgc1 b5 31.e4 Rd8 32.Bh2 Ne7 33.Rc7 Rd7 34.Rbc1 e5 35.d4 (35.h5 g5=) 35...Rc7 (35...ed4 36.Bf3 d3 37.Kd2+=) 36.Rc7= Ng6 37.Bf3 (37.de5 Nh4 38.Bh1 Bg4 39.f3 Be6+=) 37...a5 (better 37...Nh4!? 38.de5 Be6=+) 38.h5+= Nh4 39.de5 b4 40.ef6 gf6 41.Bd6 (41.Rc6 Ba6 42.Ke3 Rc8 43.Ra6 Rc3 44.Kf4 Nf3= (44...Rf3 45.Kg4 Rf2 46.Bg3+-)) 41...ba3 (41...Ba6 42.Ke3 Rd8 A) 43.ab4? Rd6 (43...Nf3 44.Rc6 Bb5 45.Rb6+=) 44.Be2 Ng2 45.Kf3 Be2 46.Ke2 ab4-+; B) 43.Rc6=) 42.Ba3 (42.Be7!? Kg7 43.Bd8 Kf8 44.Bf6+=) 42...Ba6= 43.Ke3 Nf3 44.Kf3 Rc8 45.Ra7 Rc3 46.Kf4 Be2 (46...Ra3? 47.Ra6 Kg7 48.Ra7 Kf8 49.Kf5 Rf3 50.Kg6 Rf2 51.Ra5+-) 47.Kf5 Ra3 48.Kg6 Bc4 49.Ra8 (49.Kf6 Rb3 50.Ra8 Bg8 51.Ra5 Rb6 52.Kf5 Bf7=+) 49...Bg8 50.f4 (50.Kf6 Rb3=+) 50...Rg3 (50...Re3!?-/+) 51.Kh6 Ra3 (better 51...Re3!?=) 52.Kg6+/- Re3 53.h6 (53.Kf6?! Re4 54.Ra5 Rf4 55.Kg5 Rd4=) 53...a4 54.h7 (54.Ra4 Re4 55.Re4 Bh7 56.Kf6 Be4=) 54...Rg3 55.Kf6 Kh7 56.Ra4 Rg6 ½-½. vanycuba (2220) - alekhinebattery (2425), gameknot.com, 2021.

5.bc5 Nc6 6.Nf3 Bc5 7.d4 Be7 8.Nc3 0-0.

5.Nf3 cb4 6.ab4 Bb4 7.Nc3 Nc6 8.e3 0-0.

4.c4 Bb4?? 5.Bg7 (5.cb5?! Nf6=) 5...bc4 6.Bh8+-.

4.c4 bc4 5.Bc4 Bb7 6.Nf3 d5 7.Be2 Nd7 (7...Bb4?? 8.Bg7 Nd7 9.Bh8+-) 8.0-0 c5 (8...Ngf6 9.Qa4=) 9.bc5+= Bc5?? (better 9...Nc5 10.d4 Nd7+=) 10.Bg7+- (10.Bg7 Ne7 11.Bh8+-) 1–0. aravind555 (1705) – novik2 (1710), lichess.org, 2020.

4.c4 bc4 5.Bc4 d5 6.Bb3 (6.Be2 Nf6= 7.Nf3 Nbd7 8.Qa4 c5 9.a3=; 6.Bd3 Nf6 7.Nf3 Nbd7 8.Qa4 c5 9.bc5=) 6...Bb7 (6...Nf6 7.a3= c5 8.bc5 Bc5 9.Nf3=) 7.Nf3 (7.a3 Nf6 8.Ba4 Nbd7 9.Nf3=) 7...Nf6 (7...Bb4?? 8.Bg7 Nf6 9.Bh8+-) 8.a3 (8.Ba4 c6 9.a3=) 8...Nbd7 (8...Bd6 9.Be5=) 9.d4 (9.Ba4 Bd6=) 9...Bd6 10.Nbd2 (10.Nc3 0-0=) 10...0-0 11.Rc1 Re8 12.Ne5 Ne4 (12...Qe7!?=) 13.Ne4+/– de4 14.Nd7 Qd7 15.Qg4 (15.Ba4 c6 16.Qc2+=) 15...f5?? (15...Red8 16.0-0 Bd5 17.Bd5 ed5 18.Qd7 Rd7 19.Rc6=) 16.Qd1?? (better is 16.Qf5! a5 17.b5+/–) 16...Bd5= 17.Ba4 c6 18.Qd2 Rf8 19.Qc2 Rac8 20.Qe2 Qb7 21.f3? ef3 22.gf3-/+ Bb4! 23.Kd1 Be7 24.Rg1 Bf6 25.e4 fe4 26.fe4 Bb3 27.Bb3-/+ Qb3 28.Rc2 e5 29.Rg3 Qe6 30.de5 Be5-+ 31.Be5 Qe5 32.Qc4 Kh8 33.Rcg2 Rcd8 34.Kc2 Rd4 35.Qc6 Re4 36.Qa6 Qf5 37.Qd3? Qc5 38.Kb2 Rb8 39.Ka2 Rd4 40.Qc2 Qd5 41.Rb3-/+ Rd8 42.Qc3?? Qg2-+ 43.Rb2 Qd5 (43...Qd5 44.Qb3 Qa5-+) 0–1. Vahl,Laurens – Van der Eijk,Martijn, NED–ch U16 op, 2000.

4.c4 bc4 5.Bc4 Qh4 6.Bd4= (6.Qb3 Bb7 7.Bf1 Nf6 8.a3 Bd6 9.Qc2+=) 6...Nc6 7.Nf3 Qg4 8.Be2 Qg6 9.a3=.

4.c4 bc4 5.Qf3 Nc6 (5...d5 6.Bc4 Nd7 7.a3 c5 8.Bd3 Rb8 9.Bc3+=) 6.a3 Rb8 7.Qg3 f6 8.Nf3 a5 9.Bc4+=.

4.Qf3 Nc6 5.a3 Bb7 6.Qg3 Nf6 7.Nf3 Rb8 8.Nc3 d5 9.Bd3 Nh5 10.Qg4 Nf6 11.Qh3 (11.Qg5 h6 12.Qg3 g5=) 11...h6 (11...e5 12.Ng5=) 12.Ne2 e5 (better 12...Bd6!? 13.Ng3 0-0=) 13.Ne5+/- Ne5 14.Be5 Bc8 (14...Bd6 15.Bd4+/-) 15.Qg3+- Rb7 16.Nf4 Qe7 17.Bf6 (17.Bd4 c6+/-) 17...Qf6 18.Ke2 (18.c3 c6+/-) 18...Bd6 19.Nh5 (better 19.Nd5 Qa1 20.Qd6 Bg4 21.f3 cd6 22.Ra1+=) 19...Bg3?? (better 19...Qa1! 20.Ra1 Bg3 21.Ng3 Bd7=+) 20.Nf6+- gf6 21.hg3 h5 22.Rh4 Ke7 (22...Rg8 23.a4 Ke7 24.ab5 ab5 25.e4+-) 23.Rah1 Be6 24.f3 d4 (24...f5 25.Rh5 Rh5 26.Rh5+-) 25.Rh5 (better 25.ed4 Rg8 26.Kf2+-) 25...de3?? (25...Rh5 26.Rh5 de3 27.Ke3 Ra7+-) 26.Rh8 ed2 27.Kd2 c5 (27...Rb6 28.g4+-) 28.Re1 (28.bc5 Ra7+-) 28...cb4 (28...c4 29.Be4 Rd7 30.Kc3+-) 29.ab4 Rd7 30.Re6! fe6 (30...Ke6 31.Ke3 Combination; 30...fe6 31.Rh7 Skewer) 31.Rh7 Kd6 32.Ke3 1-0. FeegLood (2655) - Ottogiugno (1630), Time forfeit, lichess.org, 2015.

4.Nf3 Ra7 5.c4 (5.Bd4 Ra8 (5...Rb7 6.a4 Nf6+= 7.ab5 ab5 8.c3 d6+=) 6.a4 ba4 7.Ra4 Nf6 8.Bd3 Nc6=; 5.a4 Nf6 (5...Nc6 6.Ne5 Nb4 7.ab5 a5 8.Bd4 Rb7+/–) 6.Bd4 Rb7 7.ab5 ab5 8.c3 d6+=; 5.a3 Nf6 6.c4 bc4 7.Bc4 d5 8.Be2 c5=; 5.Be2 Nf6 (5...Rb7 6.0-0 Nf6 7.c3 c5 8.bc5 Bc5+=; 5...Bb7 6.a4 Nc6 7.c3 ba4 8.Ra4 Nf6+=; 5...Nc6 6.a3 Bb7 7.Nc3 Nf6 8.e4 Be7+=) 6.a4 Bb4 7.ab5 Bb7 8.0-0 0-0=) 5...bc4= (5...Bb4?? 6.Bg7 (6.cb5?! Nf6=) 6...bc4 7.Bh8+-) 6.Bc4 (6.Qa4 Bb7 7.Bc4 Bc6 8.Qd1 Rb7=) 6...Rb7 7.a3 (7.Bc3= d5 8.Ba6 Na6=) 7...h5 (7...c5 8.Bc3 d5 9.Be2=) 8.0-0 (8.Qa4 c5+/–) 8...a5 (8...c5 9.Be2+=) 9.b5+/– c6 10.a4 d6 (10...d5 11.Be2+/–) 11.Nc3 (11.Qc2 Ne7+/–) 11...e5 (11...d5 12.Be2+/–) 12.d4 (12.Rb1 Nf6+/–) 12...ed4 (12...e4!? 13.Nd2 d5+=) 13.Qd4 Rh6 (13...Bg4 14.Be2+/–) 14.bc6 (better is 14.Rab1+-) 14...Rb2? (better is 14...Nc6 15.Qd5 Qd7+/–) 15.Nd5+- Rc2 (15...Nc6 16.Qb2 Nge7+-) 16.c7 (16.c7 Qc7 17.Nc7 Kd8 18.Nb5+-) 1–0. Wall,Bill – Ifanoff, internet, 2001.

4.a3 a5 5.b5 a4 6.c4 Bc5 7.d4 Bb6 8.Nc3 Ba5 9.Bd3 0-0 10.Nge2 d5 11.c5 c6 12.b6 Nbd7 13.f4 Bc3? 14.Bc3 Ne4 15.Bb2 f6 16.0-0+/– e5 17.Be4 de4 18.Ng3 ef4 19.Rf4 Rf7 20.Ne4+- Nf8 21.Nd6 Rd7 22.Qc2 Ne6 23.Rf3 Ng5 24.Rg3 Qe7 25.Re1 Rd6 26.cd6 Qd6 27.Qc5 Qe6? 28.e4!+- Bd7 29.Bc3 Re8? 30.h4?? Ne4= 31.Qb4 Qf5 32.Rf3 Qg4 33.Bb2 Qh4 34.Qa4?? Bg4 35.Rfe3 f5 36.Qb3 Kh8 37.Qf7 Qf2 38.Kh2 Qf4 39.Kg1 Rg8?? 40.Re4!+- Qe4 41.Re4 fe4 42.Qf4 Bh5 43.Qe4 Bg6 44.Qe5 h6 45.d5 Kh7 46.dc6 bc6 47.b7 (47.b7 Bc2 48.b8Q Kg6 49.Qe6 Kg5 50.Qg3 Kh5 51.Qeg4) 1–0. amator111 (1665) – frankfurti, kurnik, 2011.

4.a3 b5 5.c4 Bb7 6.Nf3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.c4).

4.a3 c5 5.bc5 Bc5 6.c4 Nc6 7.Nc3 0-0 8.Nf3 b6 9.Qc2 Bb7 10.Na4 Be7 11.Rb1 Qc7 12.Nb6!+/– Qb6 13.Bf6 Qb1?? 14.Qb1+- Bf6 15.Qb7 Rab8 16.Qd7 Rb1 17.Ke2 Na5 18.Qc7 Nb3 19.d4 Nc1 20.Kd2 Na2 21.e4 Rb2 22.Ke3 Rfb8 23.c5 g5 24.Bc4 Nc3 25.c6 Nb5 26.Qb8 Kg7 27.c7 (27.c7 Nc7 28.Qb2+-) 1–0. pereira – oppo, internet, 2009.

4.a3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6).

4.a3 Be7 5.Nf3 b5 6.c4 bc4 7.Bc4 Bb7 8.0-0+= 0-0 9.d3 d6 10.Nbd2 Nbd7 11.Bb3 c5 12.Rb1 cb4 13.ab4 d5 14.Ba2 Bc6 15.Ne5 Ne5 16.Be5 Bb5 17.Nf3 Nd7 18.Re1 Ne5-/+ 19.Ne5 Qc7 20.d4=+ Bd6 21.Nf3 Qe7 22.Qd2 Rac8 23.Rb2 Rc7-/+ 24.Reb1 Rfc8 25.g3 h6 26.Ne1 Rc3 27.Rb3 R3c7 28.Nd3?? Rc2-+ 29.Rc1 Rd2 30.Rc8 Kh7 31.Nb2 Bb4 32.Kg2 a5 33.Bb1 f5 34.g4 Qg5 35.h3 Qh4 36.Nd3 Bd3 37.Rd3 Qf2 (37...Qf2 38.Kh1 Qf1#) 0–1. Dreyer – Fauth,D, Frankfurt a Main GER, 1987.

4.a3 d5 5.e5 Nge7 6.d4 Ng6 7.Nf3 Be7 8.g3 (8.Bc1 Nb8+=) 8...b6 (8...Bd7 9.h4=) 9.Bg2 (9.h4 0-0+=) 9...Bb7 (9...a5 10.b5 Na7 11.a4=) 10.0-0 Na7 11.Nbd2 c5 12.bc5 bc5 13.c4 0-0 14.dc5 Bc5 15.Nb3 Be7 16.cd5 Bd5 17.Rb1 (better 17.Nbd4!?=) 17...Rb8-/+ 18.Nfd4?? (better 18.Nbd2-/+) 18...Bb3-+ 19.Nb3 Qd1 20.Rbd1 (20.Rfd1 Rb3 21.Ba1 Ra3-+) 20...Rb3 21.Rd7 (21.Ba1 Ba3 22.Rd7 Nb5-+) 21...Rb2 (21...Ba3?! 22.Ba3 Ra3 23.Ra7 Ne5 24.f4-+) 22.f4 (22.Ra7 Ba3 23.Ra6-+) 22...Rd8 (22...Rc8 23.Rfd1 Ba3 24.R1d2-+) 23.Rd8 Bd8 24.Rd1 (24.h4 Nb5-+) 24...Be7 25.h4 (25.a4 Bc5 26.Kh1 Ra2-+) 25...h6 (25...Ba3 26.Kh2-+) 26.Rd3 (26.h5 Nf8-+) 26...Bh4! 27.gh4 (27.Kf1 Rb1 28.Ke2 Bg3 29.Rg3 Nf4 30.Kf3 g5-+) 27…Rg2! (27...Rg2 28.Kf1 Rg4 29.Rd8 Kh7-+) 0–1. Sapareva,Magdalena (1620) – Dochev,Delyan (1785), 124th MGU Open, 2014.

4.a3 Qh4 5.Nc3 (5.d3 Nf6=) 5...b5 (5...Nf6!? 6.Nf3 Qf4+=) 6.Nf3 Qd8 (6...Qg4 7.d4+=) 7.d4+/– Nce7 (7...d5 8.Bd3+/–) 8.Bd3 d6 (8...Ng6 9.0-0+/–) 9.0-0+- Bb7 (9...Ng6+-) 10.Ng5 (10.d5 Nf6+-) 10...h6 (10...Nc6 11.f4 Nd4 12.a4+/–) 11.Nh3 Bc8 (11...d5 12.Qe2+/–) 12.f4 (12.a4 ba4 13.Ra4 Rb8+-) 12...g6 (12...Nf6 13.Nf2+-) 13.e5 (13.a4 ba4 14.Na4 Bg7+-) 13...d5 14.a4 Bb7 (14...Nf5!? 15.Qd2 Bb4 16.ab5 c6+/–) 15.ab5+- ab5 16.Ra8 Ba8 (16...Qa8 17.Nb5 (worse is 17.Bb5 c6+-) 17...Qd8 18.Nf2+-) 17.Nb5 Nf5 (17...Bb7 18.Qd2+-) 18.Bf5 (18.Qa1!? Bb7 19.Qa7 Qc8+-) 18...gf5 19.c4! c6 (19...dc4 20.Qa4) 20.Na3+- Bb4 (20...Bb7+-) 21.cd5 cd5? (21...Ba3 22.Ba3 Qd5+-) 22.Qa4 Kf8 23.Qb4 (23.Qb4 Kg7 24.Nb5+-) 1–0. Wall,Bill – Luv2Play, internet, 2006.

4.a3 Bb7 5.e3 Nf6 6.Be2 c5 7.bc5 Bc5 8.0-0 Qc7 9.d3 Rg8 (9...0-0 10.Bf6 gf6 11.a4=) 10.d4 Ba7 (10...Bd6 11.Ne5=) 11.Nbd2+= Nc6 12.c4 bc4 13.Bc4 Na5 (13...Rb8 14.Rb1+=) 14.Ba2 (14.Bd3 Rc8+/–) 14...Bb8 15.Rc1 Qd6 16.Qa4 Nc6 17.Qd1 (17.e4 Qf4+/–) 17...Ng4 (17...Na5!?= The pressure on h2 grows) 18.h3 Nf6 (18...Nh2 19.Re1 Nf3 20.Nf3+= (20.Qf3 Nd4 21.Rc8 Ke7 22.Re8 Re8-+)) 19.Qe2 (19.e4 Qf4 20.e5 Nh5+/–) 19...Nd5 (19...g5 20.e4 g4 21.e5 gf3 22.Nf3= (22.ed6?? Rg2 23.Kh1 fe2-+)) 20.Nc4 (20.Ne4 Qe7+/–) 20...Qc7 (20...Qe7 21.Qd3+=) 21.Qd3 (21.Nce5 Qd6+/–) 21...g6 (21...f5 22.Nce5 Qd6 23.Rc2+/–) 22.Ng5?? (better is 22.Nce5+/–) 22…Qh2# 0–1. FatMaHa – kingsknight59, ChessWorld.net, 2005.

4.e3 Bb7 (--> 1.b4 b5 2.Bb2 Bb7 3.e3 a6 4.Nf3 e6).

4.e3 Nf6 5.a4 ba4 6.Ra4 c6 7.c4 d6 8.d4 Bd7 9.Nc3 c5 10.b5 Qb6 11.dc5 dc5 12.Bd3 Ra7 13.Qa1 Bd6 14.0-0 0-0 15.Ra3 Bc7? (better is 15...Bc8+/–) 16.Na4+- Qd6 17.b6 Bb6 18.Nb6 Qb6 19.Bf6 gf6 20.Qf6 Qd8 (20...Rd8 21.Bh7 Kf8 22.Rd1+-) 21.Bh7! Kh7 (21...Kh7 22.Ng5 Combination) 22.Ng5 Kg8 23.Qh6 Qg5 24.Qg5 Kh8 25.e4 f6 (25...e5 26.Qh6 Kg8 27.Rg3 Bg4 28.Rg4#) 26.Rh3# 1–0. Fournier,Frederic (2445) – Bullofthewest, Chessworld.net, 2012.

4.a3 d5 5.g3 Nf6 6.Bg2 Bd6 7.d3 b5 8.Nbd2 Bb7 9.0-0 0-0 10.Re1 Re8 11.e4 e5 (better is 11...de4!? 12.de4 e5=) 12.ed5+/– Nd5 13.c4 Nf6 14.c5 Bf8 (14...Be7!?+/–) 15.Ne5 Ne5 16.Bb7 (worse is 16.Re5 Bg2 17.Kg2 Qd3+=) 16...Nd3 (16...Ra7 17.Bg2 Nd3 18.Re8 Qe8 19.Bf6 gf6 20.Ne4+-) 17.Re8+- Ne8 18.Ba8 Nb2 19.Qc2 Qa8 20.Qb2 Qd5 21.Nf1 Nf6 22.Qd2 Qe5 23.Re1 Ne4?? (23...Qf5+-) 24.Qe3 1–0. Beltyukov,Denis – Nikolaev,Peter, Samara op, 2008.

4.a3 Nge7 5.e3 Ng6 6.c4 Nce7 7.Be2 Nf5 8.0-0 d6 9.d3 e5 10.Nbd2 Nfh4 11.Nh4 Nh4 12.Nf3 Nf3 13.Bf3 Be7 14.d4 Bf6 15.de5 Be5 16.Be5 de5 17.Qd8 Kd8 18.Rfd1 Ke7 19.c5 c6 20.Rd6 f5 21.Rad1 e4 22.Be2 Be6 23.f3 Bd5 24.fe4 fe4 25.Bg4 Rhd8 26.Rd8 Rd8 (worse is 26...Kd8 27.Be6 Kc7 28.Bd5 cd5 29.Rd5+/–) 27.g3 g6 28.h4 h5 29.Be2 Rf8 30.Rf1 Rf5? (better is 30...Rf1!? 31.Kf1 Be6=) 31.Rf5+/– gf5 32.Bh5 Kf6 33.Be2 Kg7 (better is 33...Be6+-) 34.Bh5 Kh6?? (34...Kf6 35.g4 Ke5+-) 35.Be8 Be6 36.Kf2 Kg7 37.h5 Kf8 38.Bg6 Ke7 39.Ke2 Kd8?? 40.Kd2 Kc7?? 41.Kc3 b6 42.Kd4 bc5 43.Kc5 Bd5 44.Bf5 Kd8 45.h6 Ke7 46.g4 Kf6 47.h7 Kg7 48.g5 Bf7 49.g6 Be8 50.Be4 Bd7 51.Bc6 Bf5 52.Kb6 Bg6 53.Ka6 Bh7 54.Kb6 Bc2 55.a4 Kf6 56.a5 Ke5 57.a6 Kd6 58.b5 Bd3 59.a7 Ke5 60.a8Q Ke6 61.Qe8 Kf6 62.e4 Be4 63.Be4 Kg5 64.Qf8 Kg4 65.Qf3 Kg5 66.Qf5 Kh6 67.Kc6 Kg7 68.Bd5 Kh6 69.Kd6 Kg7 70.Ke7 Kh6 71.Bf3 Kg7 72.Qg5 Kh7 73.Kf7 Kh8 74.Qh6 (74.Qh4) 1–0. Fournier,Frederic (1775) – wantmoe (1655), Active (5/0), 2005.

4.a3 Nf6 5.e3 d6 6.Be2 Bd7 7.0-0 e5 8.d3 h5 (8...Be7 9.c4=) 9.c4+= Ng4 (9...Be7 10.d4 ed4 11.Nd4 Nd4 12.Bd4+=) 10.Nbd2 h4 (10...Qf6 11.d4 Qg6 12.Qb1+-) 11.h3 Nh6 (11...Nf6+-) 12.Ne4 (better 12.d4+-) 12...Bh3?? (better 12...f5 13.Nc3 g5+=) 13.gh3+- Qd7 14.Nfg5?? (better 14.Kg2+-) 14...f6+- 15.Bh5 Kd8 16.Nf7 (better 16.f4+-) 16...Nf7= 17.Bg4?? (better 17.f4=) 17...f5-+ Black gets strong initiative 18.Bf5 (18.f3 Nh6-+) 18...Qf5 19.Kh2 Ng5 20.Ng5 Qg5 21.Rg1 Qf5 22.e4 (22.Qe2 Rh7-+) 22...Qf4 (22...Qf2 23.Rg2 Qf4 24.Kg1 Qe3 25.Kh2-+) 23.Kh1 (23.Kg2 Be7-+) 23...Qf6 (23...Qf2 24.Rb1-+) 24.Bc1 (24.Rg2 Be7-+) 24...Qe6 (24...Qf2 25.Qf1 Qf1 26.Rf1-+) 25.Rg4 (25.Qg4 Qg4 26.Rg4 Nd4-+) 25...Be7 26.Kh2 Nd4 27.Bg5 (27.Rg7 Rf8 28.Be3 Nf3 29.Kg2 Qf6-+) 27...Rf8 (27...Bg5!? 28.Rg5 Rf8 29.Rg7 Rf2 30.Kg1-+) 28.Be7 (28.Be3 Nf3 29.Kg2 Qf7-+) 28...Ke7 (28...Qe7 29.Ra2-+) 29.Kg1 (29.Rg7 Kd8 30.Qg4 Qg4 31.hg4 a5-+) 29...Nf3 30.Kf1 (30.Kg2-+) 30...Nh2 31.Ke1 (31.Kg2 Ng4 32.Qg4 Qg4 33.hg4 Rf4-+) 31...Ng4 32.hg4 (32.Qg4 Qg4 33.hg4 Rf3-+) 32...Rf4 33.f3 (33.Ra2 Qg4 34.Qg4 Rg4-+) 33...Raf8 34.Kf2 (34.Kd2 Rf3 35.Qe1 Qg4-+) 34...Rf3 (better 34...Qg4! 35.Ke1 Rf3 36.Kd2 Qg2 37.Kc3-+) 35.Qf3 Rf3 36.Kf3 Qf6 37.Kg2 (37.Ke2 Qf4 38.b5 Qg4 39.Kd2 h3-+) 37...Qf4 38.Kh3 (38.c5-+) 38...Qg4 (38...Qg3) 39.Kg4+- g5 (39...Kf6 40.Kh4 Kg6 41.Rf1+-) 40.Kg5 h3 41.Rh1 Kd7 42.Rh3 Kc6 43.Rh7 b6 44.Kf6 Kb7 45.Ke6 Kc6 (45...b5 46.Kd7 bc4 47.dc4+-) 46.Ke7 Kb7 47.Kd8 Kc6 48.Rc7 1–0. aravind555 – elmaurox, lichess.org, 2017.

4.a3 b5 5.e3 d5 6.a4 c6 (6...Bb4 7.ab5 0-0 (7...Bd6 8.Be5 0-0 9.d4 Be5 10.Ne5 Ne4=; 7...Bb7 8.ba6 Na6 9.Bf6 gf6 10.Nd4 Qc8+=; 7...c6 8.Be5 Bd6 9.d4 0-0 10.Nbd2 cb5=) 8.Be2= c6 9.bc6 Nc6 10.0-0 Qe7=; 6...ba4 7.Ra4 c5 (7...Nbd7 8.b5 Nb6 9.Ra2 a5 10.Be2 a4=; 7...Bd7 8.b5 c5 9.Be5 Be7 10.Nc3 0-0=) 8.bc5 Bc5 9.Be5 Nc6 10.d4 Be7=) 7.ab5 (7.c3= Bd7 (7...Bb7 8.d4 Bd6 9.Bd3 Nbd7 10.0-0 Nb6=; 7...Qb6 8.Be2 ba4 9.Qa4 Bd6 10.d4 0-0=; 7...ba4 8.Qa4 Bd6 9.c4 dc4 10.Na3 0-0+=) 8.ab5 cb5 9.Be2 Bd6 10.0-0 0-0=; 7.Be5 Bb4 8.ab5 cb5 9.Bb5 Bd7 10.Be2 a5=; 7.Bc3 ba4 8.Ra4 c5 9.bc5 Bc5 10.Be5 Nc6=; 7.Ne5 Bb4 8.ab5 Qb6 9.Nc3 Bc3 10.Bc3 cb5=) 7...cb5 (7...Bb4!? 8.Be5 cb5 (8...Bd6= 9.d4 0-0 10.Nbd2 cb5=) 9.Bb5 Bd7 10.Be2 a5=) 8.Bb5+= Bd7 9.Bd7 Qd7 (9...Nbd7!? 10.c3 Bd6+=) 10.Bf6+/– gf6 11.c3 Bg7 (11...Nc6 12.0-0+/–) 12.0-0 0-0 (12...Rg8 13.Nd4+/–) 13.Qe2 Nc6 (13...f5 14.Ng5+-) 14.Ra6 Qb7 15.Ra8 Ra8 16.b5 (16.e4 Ne7 17.Re1 f5 18.ed5 Nd5+-) 16...Na5 (16...Na7 17.Nd4+-) 17.Nd4 Nc4 (17...f5 18.Na3+-) 18.d3 Nd6 19.c4 Qc7 (19...f5 20.Rc1+-) 20.cd5 Ra5 (20...ed5 21.Qh5 Qc5 22.Nd2+-) 21.Qd2 (better is 21.de6 fe6 22.Ne6+-) 21...Nb5 (21...f5+-) 22.Rc1 (22.de6?! Nd4 23.ef7 Kf7 24.ed4 f5+-) 22...Qb6 (22...Qc1 23.Qc1 Nd4 24.ed4 Rd5 25.Qc8 Bf8+-) 23.Rc8 Bf8 24.Qb4 (24.Qb4 Qd6 25.Qa5 Nd4 26.ed4+-) 1–0. gtate (2655) – bigal (2160), net–chess.com, 2007.

4.a3 b5 5.e3 d6=.

4.a3 b5 5.g3 Bb7 6.Bg2 Be7 (6...c5 7.d3=) 7.0-0 d6 8.d3 Nbd7 (8...0-0 9.c4=) 9.e4 (9.a4 Qc8+=) 9...e5 (9...0-0 10.Qc1=) 10.Nbd2 (10.a4 c5=) 10...0-0 11.Nb3 Bc8 12.Qe2 (12.d4 c5 13.bc5 Qc7+/–) 12...Re8 (12...Nb6 13.d4 Na4 14.de5 Nb2 15.ef6 Bf6 16.e5 de5 17.Ne5+/–) 13.c4 (13.a4 c6+=) 13...c6 (13...Nb6 14.c5 Na4 15.Rac1+=) 14.Rac1 Nf8 (14...bc4 15.dc4 Bf8 16.Qd3+=) 15.cb5 cb5 16.d4 (16.Na5 Ng6+/–) 16...Be6 (16...ed4 17.Rfd1+/–) 17.d5 (17.Na5!? ed4 18.Nd4+- (18.Bd4?! Rc8+=)) 17...Bd7 18.Na5 Qb6 19.Rc2 Rac8 20.Rfc1 Rc2 21.Rc2 Ng6 22.Bc1 Rc8 23.Rc8 Bc8 24.Qc2 Bd7 25.Be3 Qb8 26.h3 Qc8 27.Qc8 Bc8 A minor pieces endgame occured 28.Nd2 Nh5 29.Bb6 Kf8 30.Bf3 Nf6 31.Kg2 h6 32.Bc7 Ne8 33.Bb6 Bg5 34.Nb1 Bc1 35.Bg4 Ne7 36.Bc8 Nc8 ½–½. Salazar Bernard,JI – Rodriguez Bernardo,G, Orense op 9th, 2000. (=1.Nf3 Nf6 2.b4 a6 3.Bb2 e6)

4.a3 b6 5.c4 Bb7 6.e3 c5 7.bc5 bc5 (7...Bc5 8.d4 (8.Nc3 Be7 9.Rb1 d6 10.d4 Qc7 11.Bd3 0-0) 8...Be7 (8...Bf8 9.Nbd2 Be7 10.Bd3 d5 11.cd5 Nd5; 8...Bd6 9.Bd3 Qc7 10.Nc3 0-0 11.e4 Be7) 9.Bd3 0-0 10.0-0 d5 11.cd5 Qd5) 8.g3 (8.Be2 Nc6= (8...d5 9.cd5 ed5 10.0-0 Bd6 11.Nc3 0-0; 8...Be7 9.d3 0-0 10.0-0 Nc6 11.Nbd2 Rb8; 8...Bd6 9.0-0 0-0 10.d4 Bf3 11.Bf3 Nc6) 9.Nc3 Rb8 10.Rb1 Be7 11.0-0 0-0; 8.Nc3 d5 9.cd5 ed5 10.Rb1 Bd6 11.Be2 0-0; 8.Bd3 d5 (8...Be7 9.Nc3 Nc6 10.0-0 Rb8 11.Rb1 0-0; 8...Nc6 9.0-0 Be7 10.Nc3 Rb8 11.Qc2 0-0; 8...d6 9.0-0 Be7 10.Nc3 0-0 11.Rb1 Nc6) 9.cd5 ed5 10.0-0 Bd6 11.Qa4 Nbd7) 8...d6 (8...Nc6 9.Bg2= Be7 10.0-0 Rb8 11.d3 0-0; 8...d5 9.cd5 ed5 10.Bg2 Bd6 11.0-0 0-0; 8...Be7 9.Bg2 d5 10.cd5 ed5 11.0-0 0-0) 9.Bg2 Be7 10.Nc3 (10.d3 Nbd7 11.Nbd2 Rb8) 10...0-0 (10...Nbd7 11.0-0 Rb8) 11.0-0 Qc7 (11...Nc6=) 12.d3 Nc6 13.Qc2 Nd7 14.Rab1 Nce5 (14...Rfb8 15.Ne4=) 15.Ne5 Bg2 (15...Ne5 16.Bb7 Qb7 17.Ne4=) 16.Kg2 (16.Nd7!? Bf1 17.Nf8+/–) 16...Ne5= 17.f3 (17.f4 Qc6 18.Kh3 Nd7=) 17...f5 18.Ne2 Bf6 19.Nf4 Qf7 20.Ne2 g5 (20...Rab8 21.Be5 Be5 22.d4 cd4 23.ed4=) 21.d4 Ng6 (21...cd4 22.ed4 (worse is 22.Nd4 Rac8-/+) 22...Nc6 23.Rfe1=) 22.f4 (22.dc5 dc5 23.Bf6 Qf6=) 22...Qb7 (22...Rab8 23.fg5 Bg5 24.Qd3=) 23.d5+= Qf7 (23...Bb2 24.Rb2 Qe7 25.Qd2+=) 24.fg5 (24.de6 Qe6 25.Bf6 Qf6+/–) 24...Bb2 25.Rb2 ed5 26.cd5 (26.Rd1!?=) 26...Qd5+= 27.Kg1 Qe5 (27...Ne5 28.Nf4 Qe4 29.Qe2=) 28.Qd2 (28.Rb3 Qe6=) 28...Rad8 (28...Rfe8 29.Rb3=) 29.Kf2 (29.Nf4 Rb8 30.Rb8 Rb8=) 29...d5 30.Qc3 d4 31.ed4 cd4 32.Qd3 f4 33.gf4 Nf4 34.Nf4 Rf4 35.Kg2 Qg5 36.Qg3?? Rg4-+ 37.Rf3 Rf8 38.Rbb3?? Rff4 39.h3? Rf3-+ 40.Rf3?? Rg3 41.Rg3 Qg3 42.Kg3 Kf7 43.Kf3 Kf6 44.Ke4 ½–½. Satka,Martin – Mueller,Guenter(31Ludw), 9sen.Brandenburg op, 2000.

4.a3 d5 5.e3=.

4.a3 d6 5.Nc3 b5 (5...d5 6.Rb1=) 6.e4 Bb7 7.d3 c5 8.bc5 (8.Be2 d5 9.e5 Nh5=) 8...dc5 9.Be2 Nc6 10.0-0 (10.e5 Nd7=) 10...Qc7 11.Re1 Rd8 12.Qc1 (12.Qb1 Bd6+=) 12...Be7 (12...Nd4 13.Bd1+=) 13.a4 (13.Rb1 0-0+=) 13...b4 14.Nd1 a5 (14...Nd4 15.Ne3+=) 15.Ne3 0-0 16.Nc4 h6 (16...Nd4 17.Nd4 cd4 18.Qg5+=) 17.h3 (17.Nfe5 Nd4=) 17...Ba6 18.Nfe5 Bc4 19.Nc4 Nd4 20.Qd2 (20.Qd1 Bd6=) 20...Nc6 (20...Bd6 21.Rab1+=) 21.e5 (21.Qe3 Rfe8=) 21...Nd7 (21...Nd5 22.Bf3=) 22.Qf4 (22.Qe3 Nb6=) 22...Bg5 (22...Nb6 23.Nb6 Qb6 24.Qg3=) 23.Qe4 Be7 (23...Nb6 24.Nb6 Qb6 25.f4+=) 24.Bf3+= Ncb8? (better is 24...Ndb8+=) 25.Qa8 (25.Qb7 Qb7 26.Bb7 h5+-) 25...f6 (25...Nb6 26.Qa5 N8d7 27.Qb5+-) 26.ef6 Bf6 27.Bf6 Nf6 28.Qa5 Qa5 29.Na5 Rde8 30.Nb7 Nfd7 31.a5 e5? 32.a6 Nb6 33.a7 N8d7 34.Ra5 c4 35.Nd6 Re6 36.Nc4 Nc4 37.a8Q Ra8 38.Ra8 Kh7 39.dc4 (39.dc4 Rd6 40.Be4 g6 41.Ra7+-) 1–0. Wall,Bill – Wang,Willy, internet, 2003.

4.a3 Bd6 5.Nc3 (5.e4 Ne4 6.Bg7 Rg8=) 5...0-0 (5...Nc6 6.e4+=) 6.d4 a5 7.b5 c6 (7...Be7 8.e4+=) 8.e4 Bf4 (8...Be7 9.e5 Nd5 10.Ne4+=) 9.Bd3 (9.e5 Nd5+=) 9...d5 (9...d6 10.Ne2 Bh6 11.e5 de5 12.de5+=) 10.e5 Ng4? (better is 10...Nfd7+=) 11.g3+- Bg5? (11...Bh6+-) 12.Ng5 Qg5 13.f4 Qh5 14.h3 f5 15.Kd2 Nf6 16.ef6 Qd1 17.Rad1 Rf6 18.g4 cb5 19.Nb5 fg4 20.hg4 Rf4 21.Bh7 Kf8 22.a4 Nc6 23.Ba3 Nb4 24.c3 Rf2 25.Ke3 Rg2 26.Rdf1 Ke7 27.Bg6 Rg3 28.Kf4 Rg2 29.Kg5 Kd7 30.cb4 Kc6 31.ba5 Ra5 32.Rc1 Rc2 33.Rc2 Kd7 34.Rc7 Kd8 35.Be7# (35.Rh8#) 1–0. wiking – SAND0KAN, internet, 2010.

4.a3 Be7 5.e3 0-0 6.Be2 b6 7.0-0 Bb7 8.c4 c5 9.Qb3 (9.bc5 bc5 10.Qc2 d6=) 9...Qc7 (9...Nc6 10.bc5 bc5 11.Qc2= (worse is 11.Qb7 Na5 12.Qa8 Qa8-+)) 10.d4 (10.d3 Nc6=) 10...cd4 (10...cb4 11.ab4 Nc6 12.Bc3=) 11.Nd4 d6 (11...Nc6 12.Nd2=) 12.Nd2 Nbd7 (12...Nc6 13.f4=) 13.Rac1 Rfe8 (13...Rac8 14.f4=) 14.N2f3 (14.Bf3 Rac8=) 14...Rac8 (14...Ne4 15.Qc2=) 15.Rfd1 Qb8 (15...Bf8 16.Nd2=) 16.a4 (16.Ng5 h6 17.Ngf3 Red8=) 16...d5 (16...a5 17.Nb5=) 17.cd5 (17.Ba1 dc4 18.Rc4 Bd5 19.Rc8 Rc8=) 17...Bd5 18.Bc4?? (18.Qa3 a5 19.Bc3 Red8=) 18...Bc4?? (better is 18...Rc4 19.Rc4 b5 20.Nb5 ab5 21.ab5 Qb5 22.Rd5 ed5-+ (22...Nd5?! 23.Nd4 Qb6 24.Nc6-+)) 19.Rc4= Ng4?? 20.Nc6+- Qb7?? 21.Rdc1 b5?? 22.Ne7 (22.Ne7 Re7 23.Rc8 Nf8 24.Qd3+-) 1–0. StephenHilton – kostovist, internet, 2006.

4.a3 h6 5.d3 Nc6 6.e4 d6 7.Be2 Be7 8.0-0 b5 9.c4 bc4 10.dc4 Bb7 11.Nbd2 0-0 12.Qc2 Rc8 13.Rfd1 Nh5 14.g3 Bf6 15.Bf6 Nf6 16.Nb3 Qe7 17.Rac1 Ne5 18.Ne5 de5 19.f3 Rfd8 20.c5 Rd1 21.Rd1 Rd8 22.Kf2 Rd1 23.Qd1 g5 24.h3 Kg7 25.Ke3 a5? 26.Bc4 ab4+= 27.ab4 Qe8 28.Na5 Ba8 29.b5 h5? 30.c6 Qe7+/– 31.Qb3 Qc5 32.Ke2 g4 33.hg4 hg4 34.Qe3 Qb4 35.Qd2?? gf3-+ 36.Kf3?? Qa3 37.Ke2?? Ne4-+ 38.Qe3 Nc3 39.Kf3?? Qa5?? 40.Qg5= Kf8 41.Qe5?? Nd5! 42.Bd5 ed5 43.Qd5 Qc3-/+ 44.Kf2 Qf6 45.Kg2 Qb2 46.Kh3 Qh8 47.Kg4 Qg7 48.Kf3 Qf6 49.Kg2 Qb2 50.Kf3 Qc2 51.Kg4 Qg6 52.Kf3 Kg7 53.Kg2 Qc2 54.Kh3 Qh7 55.Kg2 Qc2 56.Kh3 Qh7 57.Kg2 Qc2 ½–½. bratek55 – cioculet, kurnik, 2011.

4.h3 Bb4-/+ 5.Bf6 Qf6 6.c3 Be7 7.e4 e5 8.h4 (8.d4 ed4 9.e5 Qe6 10.cd4 d5-/+) 8...h6 9.Qa4 (9.d3 d6-+) 9...0-0 10.Na3 (10.d4 ed4 11.Qd4 Re8-+) 10...Qc6 (better is 10...Qf4-+) 11.Qc2?? (11.Qc6 Nc6 12.Nc2 b6-/+) 11...d6 (better is 11...Ba3!? 12.Ne5 Qe6 13.Nc4-+) 12.c4 (12.Nc4 Re8-/+) 12...Bg4 (12...f5 13.Bd3-+) 13.Be2 (13.Nb1 Qd7-+) 13...Bf3 (13...f5!? 14.ef5 Bf5 15.Qb3-+) 14.Bf3 Nd7 15.Nb1 Nb6 16.Na3 Qa4 17.Qc3 Qd7 18.h5 f5 19.0-0-0? Rab8 20.ef5-/+ Rf5 21.Bg4+= Na4 22.Qd3 Rbf8= 23.Bf5 Rf5 24.f3 Nc5 25.Qc2 Rf4 26.Nb1 Qe6 27.Na3 b5 28.d3 Rd4 29.cb5 ab5 30.Nb5 Bg5 31.Kb1 Rb4 32.Ka1 Rb5 33.g4 Be3 34.Rb1 Rb1 35.Rb1 Bd4 36.Rb2 Qe7 37.Kb1 Bb2 38.Qb2 Qf6 39.Qb8 Kh7 40.Qc7 Nd3 41.a4 Qf3 42.Qc2 Qb7 43.Ka1 e4 44.a5 Qb5 45.Qa2 0–1. pinecrest1981 – tfjv, Live Game Caissa's Web, 2004.

5.c3 c4 6.e3 (6.d3 cd3 7.ed3 d5=) 6...b5 (6...d5 7.d3 cd3 8.Bd3=) 7.a4 Bb7 8.ab5 (8.Na3 Qb6=) 8...ab5 9.Na3 Bc6 10.Ne5 Qb6 11.Nc6 Nc6 (better is 11...Qc6 12.d3 d5=) 12.Nc4+/– Ra1 13.Nb6 Rd1 14.Kd1 Ne4 (14...Na7 15.Be2 Kd8 16.Na8+=) 15.Ke1 Nd6 16.d4 (16.Na8 Kd8 17.d4 Kc8+=) 16...Be7 (16...Kd8 17.d5 Nb8 18.c4 bc4 19.Nc4 Nc4 20.Bc4 Bb4 21.Ke2+/–) 17.e4! f6 (17...Ne4 18.Bd3 Double attack (18.Bb5 Deflection; 18.Bd3 Decoy)) 18.d5 (18.Na8 Kd8 19.f4 Kc8+/–) 18...Nb8 (18...Bd8!?+/–) 19.f3 (19.Bd3 Bd8 20.Na8 Kf7+-) 19...0-0 (19...Bd8 20.Na8+-) 20.de6 (20.Bc1 Bd8 21.Na8 Na6+-) 20...de6+/– 21.g3 (21.Bc1!?+/–) 21...Bd8+= 22.Na8 Nc4? (better is 22...Rf7 23.Bh3 f5 24.ef5 Ra7 25.fe6 Ra8=) 23.Bc4+- bc4 24.Ke2 Rf7 (24...Nc6 25.Rd1 Ba5 26.Rd6 (26.ba5?! Ra8 27.Ke3 Ra5=) 26...Ra8 27.Rc6 (27.ba5?! Na5 28.Re6 Nb3=) 27...Bb4 28.Rc4+/–) 25.Rd1 Nc6 1–0. Bonetti,Shane – guest1597, ICC, 2002.

5.c3 Nc6 6.g3 d5 7.Bg2 c4 8.0-0 Be7 9.a4 0-0 10.d3 Qc7 11.Nbd2 Na7 12.dc4 dc4 13.Qc2 Bd7 14.a5 Rac8 15.Rfd1 Bb4 (better is 15...Nb5=) 16.Nc4?? (better is 16.cb4 c3 17.Qc3 Qc3 18.Bc3 Rc3 19.Ne4+/–) 16...Bc3?? (better is 16...Qc4 17.Ne5 Qc7 18.Nd7 Nd7+=) 17.Qc3+- (17.Bc3?! Qc4 18.Ne5 Qc3 19.Qc3 Rc3 20.Nd7 Nd7 21.Rd7 Nc6 22.Rb7 Rc5=) 17...Qc4 18.Qe3 Ng4 19.Qa7 Qe2 20.Qd4 f6 21.Qg4 Qb2 22.Rab1 f5 23.Qf4 Qa2 24.Ra1 Qb2 25.Qd6 Rfd8 26.Ne5 Rc2 27.Qe6!! (27.Qe6 Kh8 28.Nf7 Kg8 29.Nh6 Kh8 30.Qg8 Rg8 31.Nf7) 1–0. Wuersig,Mathias – Schoenemann,Manfred (1805), Berlin Lichtenberger op 7th, 2008.

5.c3 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.c3 a6).

6.c4 Qb6 7.Qc2 Bf2 8.Kd1 Bc5 9.Bf6 gf6 10.Nc3 Nc6 11.Ne4 Ke7 (11...Be7 12.Qc3+=) 12.Rb1 (12.e3!? Qa5 13.Qb2+=) 12...Qa5= 13.Qb2 e5 Exerts pressure on the isolated pawn 14.Qb3 (better is 14.Nc5!? Qc5 15.e4+=) 14...Qa3-/+ (14...Ba3 15.Ra1 Qb4 16.Ra3 Qb3 17.Rb3+/–) 15.Nc5 Qc5 16.e3 e4 17.Ne1 Ne5 18.Be2 Rd8 19.Nc2 d5 20.cd5 Qd5 21.Qa3 (21.Qb4 Qd6-+) 21...Qd6 22.Qc3 b5 23.Nd4 Be6 24.Ke1 Rac8 25.Qa5 Nc6 26.Qa6 Nd4 27.Qd6 Rd6 28.ed4 Bc4 (28...Rd4!? 29.Bb5 Rc2 30.Kf2-+) 29.Bc4 Rc4 30.Ke2 b4 31.Rb2 Rcd4 32.Ra1 f5 33.Ra5 f4 (33...Rg6 34.Kf1-+) 34.Rb5 f3! 35.gf3 ef3 36.Kf3 Rd2 37.R2b4 (better is 37.R5b4!? Rb2 38.Rb2-/+) 37...Rh2-+ 38.Rb7 Kf8 (better is 38...Rd7!?-+) 39.Rf4-/+ f6 40.Kg3 Rh5 41.Ra4 Re6 42.Raa7 Rg5 43.Kf4 h6 (better is 43...h5!?-/+) 44.Rh7= Rg8 ½–½. Morgenstern,Frank – Vonhoff,Joerg, Blankenburger op–B, 2007.

6.d4 Be7 7.Nbd2 d5 8.e3 0-0 9.Bd3 Nc6 10.0-0 b5 11.e4 de4 12.Ne4 Nd5 13.c4 bc4 14.Bc4 Rb8 15.Rb1 Qc7 16.Bd5 ed5 17.Ng3 Na5 18.Qd2 Nc4 (18...Nc4 19.Qc2 Be6-/+) 0–1. ramoschessbrasil (2480) – acidtest, net–chess.com, 2011.

6.e3 0-0 7.c4 g6 8.Nc3 d5 9.Qc2 Nc6 10.d4 Be7 11.Bd3 dc4 12.Bc4 b5 13.Bd3 Bb7 14.0-0 Rc8 15.Qe2 Qc7 16.Rfc1 Ng4 17.Ne4 Qd8 18.Nc5 Bc5 19.Rc5 Na5 20.Rc8 Qc8 21.Rc1 Qd7 22.Nd2 f5 23.f3 Nf6 24.e4 Re8 25.Qf2 Nh5 26.Qe3 Nc6 27.Nb3 Nf6? (better is 27...e5 28.d5 Nd8+-) 28.Nc5+- Qc8 29.Nb7 Qb7 30.d5 Nd5 (30...ed5 31.Bf6 fe4 32.fe4 Re6+-) 31.ed5 Na5 (31...Qa7 32.Qa7 Na7+-) 32.Qe5 Qd5 (32...Re7+-) 33.Qg7 1–0. Fournier,Frederic (1990) – Cutedorange, Active, 2007.

6.e3 b5 7.c4 bc4 8.Bc4 (8.Bc4 d5 (8...Nc6 9.Qc2 Rb8 10.0-0 Be7 11.Bf6 Bf6=) 9.d4= Bd6 10.Bd3 Nc6 11.Qc2 Bb7=). lasker (2265) – buba12 (2045), internet, 2008.

6.Be5 Nc6 7.d4 Be7 8.Nbd2 0-0 9.e4 Ne4?? (better is 9...d6 10.Bf6 Bf6+=) 10.Ne4+- Qa5 (10...d5 11.Ned2+-) 11.Qd2 Qd8 (11...Qb6 12.c4 Ne5 13.de5 Ba3 14.Ra3 Qb1 15.Qd1 Qe4 16.Re3+-) 12.Bd3 d5 13.Neg5 g6 14.Bf4 (14.Nh3!? Ne5 15.de5 f6+-) 14...f6+/– 15.Nh3 g5 16.Bg3 (better is 16.Bg5!? fg5 17.Nhg5+/–) 16...g4+= 17.Qh6 Rf7 18.Nhg1 gf3 19.Nf3 e5 (better is 19...Qb6!?+=) 20.de5+= fe5 21.Be5 Ne5 22.Ne5 Bg5 (22...Qa5!? 23.Ke2 Rg7+=) 23.Qh5+/– Qa5?? (better is 23...Rg7+/–) 24.Kf1+- Rg7 (24...Rc7 25.Qg5 Rg7+-) 25.Qe8 1–0. Yannick – Tiit145, playchess.de, 2005.

3.a3 d5 4.e3+=.

3.a3 Nf6 4.e3+= b6 (4...Nb8 5.Nf3=) 5.c4 (5.Qf3 Rb8+=) 5...Be7= 6.d4 (6.Nf3 0-0=) 6...0-0 (6...Bb7 7.Nf3+=) 7.Nf3 (7.Bd3 d5=) 7...Ne4 (7...Bb7 8.Bd3+=) 8.Bd3+= Bb7 9.0-0 Ng5 (9...f5 10.Nfd2+=) 10.Nbd2 (10.Ng5 Bg5 11.f4 Be7+/–) 10...Nf3+= 11.Nf3 g6 (11...f5 12.c5+=) 12.e4 (12.Bc3 c5 13.Rb1 Bf6+/–) 12...d5 (12...Nb8 13.Bc1+/–) 13.cd5 (13.ed5 ed5 14.c5 Re8+/–) 13...ed5 14.e5 (14.Re1 Nb8+/–) 14...Bc8 (14...c5 15.dc5 bc5 16.bc5 Nc5 17.Re1+=) 15.Nd2 (15.b5 Nb8+/–) 15...Nb8 (15...c5 16.dc5 bc5 17.Qa4+=) 16.f4 (16.Qc2 c6+/–) 16...a6 (16...c5 17.f5 Bf5 18.Bf5 gf5 19.bc5 bc5 20.Rf5+=) 17.f5 Qe8 (17...Bg5 18.Qe2+/–) 18.fg6 (18.f6 Bd8+-) 18...fg6 19.Rc1 (19.Rf8 Bf8 20.Qf3+=) 19...Nc6 (19...c6 20.Qc2+=) 20.Rf8 (20.Qb3!? Be6+-) 20...Qf8?? (better is 20...Bf8 21.Qc2 Bd7+/–) 21.Rc6+- 1–0. Wall,Bill – Babinba, internet, 2004.

3.b5 Nb4 (--> 2.Bb2 Nc6 3.b5 Nb4).

3.b5 Bc5?? 4.Nc3 (better is 4.Bg7 Nf6 5.Bh8 Nb4+-) 4...Qf6?? (better is 4...Nb8+/–) 5.Rb1 (better is 5.Nf3 b6 6.ba6 Ba6 7.Nb5 Qb2 8.Nc7 Kf8 9.Na6+-) 5...Bf2# (5...Qf2#) 0–1. De Oliveira,GM – Rebelo,YC, Juiz de Fora BRA, World Schools Ch U09b, 2014.

4.e3 d5=.

4.e3 Qf6?? 5.Bf6+- gf6 (5...Nf6 6.d4 Nce4 7.a3+-) 6.c4 Bg7 (6...Ne4 7.f3 Nd6 8.Nc3+-) 7.d4 Ne4 (7...f5 8.Nd2 Ne4 9.Ne4 fe4 10.Qg4+-) 8.Bd3 (better is 8.Qg4!? Ng5 9.h4 h6 10.hg5 fg5+-) 8...f5 9.Be4 fe4 10.Nc3 (10.Qg4 Bf8 11.Qe4 d6+-) 10...d5 (10...Nf6 11.Nge2+-) 11.cd5 a5 (11...Nf6 12.de6 Be6 13.Qc2+-) 12.de6 Be6 13.Ne4 1–0. Trkn – kas1975, itsyourturn.com, 2001.

4.Nf3 Nh6 5.c4 b6 6.e3 Bb7 7.d4 Ne4 8.Be2 Ng4 9.0-0 Bd6 10.h3 Nh2?? (better is 10...Ngf6=) 11.Nh2+- Qg5 12.Nf3 Qg6 13.Bd3 f5 14.Nbd2 (14.Be4 fe4 15.Ne5 Be5 16.de5 a6+-) 14...0-0-0?? (better is 14...Nd2 15.Nh4 Qg5 16.Qd2 Qh4+=) 15.Qc2 (15.Ne4 fe4 16.Bc2 Rhf8+-) 15...Rhf8?? (15...Nd2 16.Nh4 Nf3 17.Kh1 Nh4 18.f4 Ng2 19.e4 Nf4 20.Rf4 Bf4 21.Qg2 fe4 22.Be2-+) 16.a4 (better is 16.Be2+-) 16...a5?? (better is 16...Nd2 17.Nh4 Nf3 18.Kh1 Nh4-+) 17.ba6!+- Ba6 (17...Bc6 18.Be2 Ng5 19.Ng5 Qg5 20.Nf3+-) 18.Ne4 f4 (18...fe4 19.Be4 Qh5+-) 19.Nd6 Kb8 20.Bg6 hg6 21.Nb5 fe3 22.fe3 Rf5 23.e4 Rf7 24.a5 ba5 25.Ra5 Bb7 26.Rfa1 c6 27.Nd6 (27.Qa4 cb5 28.Ra8 Ba8 29.Qa8 Kc7 30.Ra7 Kd6 31.Ba3 b4 32.Bb4) 27...Rf4 28.Nb7 (28.Qb3 Kc7 29.Qb7 Kd6 30.Ba3 c5 31.Bc5) 28...Kb7 29.Qb3 Kc7 (29...Kc8 30.Ra7 Rdf8 31.Qb7 Kd8 32.Qd7) 30.Ra7 Kd6 31.Qb4 c5 32.Qc5 1–0. Fournier,Frederic (1800) – jonyth, Active (2/6), 2004.

3.a3 Be7 4.e3 Nf6-/+ (--> 1.b4 e6 2.Bb2 Nf6 3.e3 Bb4 4.a3 Be7).

3.Bg7 a6 4.Bh8 c6 5.Bc3 Bd6 6.Nf3 Qc7 7.e3 c5 8.Be2 Nc6 9.0-0 b6 10.d4 Bb7 11.dc5 Bc5 12.Bd4 Bd6 13.c4 0-0-0 (13...Nd4 14.ed4 (worse is 14.Nd4 Bh2 15.Kh1 Be5+-; 14.Qd4?! Bf3 15.Bf3 Bh2 16.Kh1 Be5+-) 14...Bf3 15.Bf3+- (15.gf3?! Bh2 16.Kg2 Bf4+-)) 14.Nc3 Nd4 15.Nd4 (15.ed4 Nf6+-) 15...Nf6 (15...Bh2 16.Kh1 Ne7 17.Rb1+-) 16.Rc1 (better is 16.f4!? Bb4 17.Na4 d6+-) 16...Bh2 17.Kh1 Rg8 18.Bf3 Bf3 (18...Be5 19.Qd3+-) 19.Qf3 Ng4 20.g3 (better is 20.Qa8 Qb8 21.Qa6 Kd8+-) 20...h5 (20...Qb7 21.e4 f6 22.Rb1+-) 21.Qa8 (better is 21.Nd5!? Ne5 22.Qe4 f5+-) 21...Qb8 22.Qb8 (better is 22.Qa6!? Qb7 23.Qb7 Kb7+-) 22...Kb8 23.Nf3 (better is 23.Rb1!? Kc7+-) 23...Bg3 24.fg3 Ne3 25.Rg1 Nc4 26.Ne4 Ne3 (26...d5 27.Nf6 Rg6 28.Nd7 Kb7 29.Kh2+-) 27.Nd6 (27.Nf6 Rg7 28.Nd7 Kb7+-) 27...Ng4 (27...f6 28.a3+-) 28.Nf7 Nf2 29.Kg2 Nd3 30.Rcd1 Nf4 31.Kh2 Ne2 (31...Nd5 32.N3e5+-) 32.Rg2 d5 (32...Nc3 33.Rd7 Ne4+-) 33.Re2 Rf8 34.N7g5 Rf5 35.Re6 Rg5 36.Ng5 (36.Ng5 Ka7 37.Re7 Kb8 38.Rf1 d4 39.Rf8) 1–0. Fournier,Frederic (1800) – 78julio (1695), Active, 2005.

3.Bg7 c6 4.Bh8 Qb6 5.e3 Qa5 6.c3 Bd6 7.Bd3 Be5 (7...h6 8.Qg4 Ne7 9.Bf6+-) 8.Qh5 Bh8 (8...Qd5 9.Bf1 Bh8 10.Qh7 Qd6+-) 9.Qa5 b6 10.Qh5 Nf6 11.Qg5 (11.Qh6 d5+-) 11...Ke7 12.e4 d6 13.f4 Nbd7 14.e5 de5 15.fe5 Bb7 16.Bh7 Kd8 17.ef6 Nf6 18.Nf3 Kd7 19.Ne5 Kd6 20.Nf7 Kc7 21.Nh8 (21.Qe5 Kc8 22.Qe6 Nd7 23.Bf5 a5 24.Qd6 Ba6 25.Bd7 Kb7 26.Bc6 Ka7 27.Qc7 Bb7 28.Qb7) 21...Nh7 22.Qg7 (22.Qe7 Kb8 23.Qd6 Kc8 24.Nf7 Ba6 25.Qd8 Kb7 26.Nd6) 22...Kd6+- 23.Qh7 c5 24.0-0 (better is 24.Nf7 Kc6 25.Ne5 Kd5 26.0-0 Rf8 27.Qd7 Ke4 28.d3 Ke5 29.Qc7 Kd5 30.Rf8 Bc6 31.Rd8 Bd7 32.Rd7) 24...Ba6 25.Nf7 Kc6 (25...Kd5 26.c4! Kc6 27.Ne5 Kd6 28.Qd3 Ke5 29.Qg3 Kd4 30.Qc3 Ke4 31.Qe3) 26.Qe4 (26.Ne5 Kd5 27.Qd7 Ke4 28.Nd3 Rf8 29.Rf8 Bd3 30.Qe6) 26...Kc7 27.Qe5 (27.Ne5 Be2 28.Qc6 Kd8 29.Qd7) 27...Kc6 28.Qd6 (28.Qe6 Kc7 29.Ne5 Bb5 30.Qe7 Bd7 31.Qd7 Kb8 32.Rf8) 28...Kb5+- 29.Na3 Ka4 30.Rf4 (30.Qc6 Ka3 31.Qe6 Ka4 32.Qb3 Ka5 33.Qa3 Kb5 34.Ne5 Re8 35.Rab1) 30...Ka3 (30...Ka5 31.Qc6 c4 32.Rc4 Bc4 33.Qc4 Rf8 34.Qb5) 31.Qc6 (31.Qe6 Bc4 32.Qc4 Kb2 33.Qb3 Ka1 34.Rf1) 31...Kb2+- 32.Qa4 Ka1 (32...Bc4 33.Rff1 Bf1 34.Qd1 Bg2 35.Qc1) 33.Qa6 (33.Qd1 Kb2 34.Qb3 Kc1 35.c4 Bb7 36.Qc3 Kd1 37.Rf1 Ke2 38.Qe3) 33...Rd8 (33...Kb1 34.Rf1 Kb2 35.Qc4 Kc2 36.Qe4 Kd2 37.Rf2 Kc3 38.Rc2) 1–0. GuestVHSX – GuestTSGT, freechess.org, 2017.

3.Bg7 Bd2 4.Qd2 Nf6 5.Bh8 Ke7 6.Bf6 Kf6 7.Qd4 (7.Qh6 Ke7+-) 7...Ke7 (7...Kg6 8.Nf3+-) 8.Qg7 Qf8 (8...h5 9.e4+-) 9.Qh7 Nc6 10.Nc3 Nd4 (10...d6 11.Nf3+-) 11.Qh4 f6 12.Qd4 e5 13.Qc5 (13.Qc5 Ke8 14.Qc7+-) 1-0. PERIERA - diya17, Rated rapid game, lichess.org, 2022.

3.Bg7 Qh4 4.Nf3 Qe4 5.Bh8 b5 6.Nc3 Qc4 (6...Bc3 7.Bc3 Bb7 8.e3+-) 7.e3 Qc3 (7...Qg4 8.h3 Qh5 9.Nb5 Ba5+-) 8.Bc3 Bc3 9.dc3 Nc6 10.Bb5 Na5 11.0-0 (better is 11.Ne5 c6 12.Qh5 cb5 13.Qf7 Kd8 14.Qg8 Kc7+-) 11...c6 12.Bd3 d5 13.Bh7 Nf6 14.Bd3 Ne4 15.Be4 de4 16.Nd2 (better is 16.Ne5 Nc4 17.Nc4 Ba6+-) 16...c5 17.Ne4 Ba6 18.Re1 (18.Qd6 f6 19.Qe6 Kf8 20.Qf6 Kg8 21.Qg6 Kf8 22.Nd6 Ke7 23.Nf5 Kd7 24.Qd6 Kc8 25.Ne7 Kb7 26.Rab1 Nb3 27.Rb3 Bb5 28.Rb5) 18...Rd8 19.Qb1 (better is 19.Qh5 Bb7 20.Rad1 Bd5+-) 19...Nc4 20.Rd1 Na3 21.Rd8 Kd8 22.Qd1 (22.Qd1 Kc7 23.Qd6 Kc8 24.Nc5 Bb5 25.Rd1 Bd3 26.Qc6 Kd8 27.Qd7; 22.Qb8 Bc8 23.Rd1 Ke7 24.Qd6 Ke8 25.Nf6) 1–0. Fournier,Frederic (1830) – yairivanandon (1700), Active, 2011.

4.Nf3 Nh6 5.Bh8 Bb7 6.Bb2 Bc5 7.e3 Nc6 8.Bd3 Qe7 9.Nc3 0-0-0 10.Qe2 Nb4 11.a3 Nc6 12.Ne4 d5 13.Bf6 Qf8 14.Nc5 Re8 15.Nb7 Kb7 16.Ne5 Qd6 17.Ba6 Kb8 18.Qb5 Ng8 19.Nc6 Ka8 20.Be5 Qd7+- 21.Qa4 Ne7 22.Bb5 Ng6 23.Qa7# 1–0. pumpkin (2275) – mleek (1755), net–chess.com, 2008.

4.Bh8 Bb7 5.Bb2 Nc6 6.Nf3 Na5 7.e3 d6 8.Be2 Qe7 9.0-0 0-0-0 10.d4 Nh6 11.c3 Bc5 12.dc5 dc5 13.Qc2 f5 14.Nbd2 Qd6 15.Rfd1 Qe7 16.Ne5 Rg8 17.Bf3 Qg7 18.Bb7 Nb7 19.g3 Qe5 20.c4 Qd6 21.Nf3 Qe7 22.Be5 Nf7 23.a4 h5 24.Kf1 Nbd6 25.Bd6 Nd6 26.a5 Ne4 27.ab6 cb6 28.Qa4 Kb8 29.Qc6 Qb7 30.Qb7 Kb7 31.Rd7 Kc6 32.Raa7 b5 33.Rdc7 Kb6 34.Rab7 Ka6+- 35.cb5 Ka5 36.Ne5 Nd2 37.Ke2 Nb3 38.Nc6 Ka4 39.b6 Ka3 40.Ra7 Kb2 41.b7 Nc1 42.Kf3 Nb3 43.b8Q Rb8 44.Nb8 e5 45.Rc5! Nd2 46.Ke2 Ne4 47.Kf3 Nc3?? 48.Rc3! Kc3 49.Re7 Kd3 50.Re5 Kc4 51.Rf5 h4 52.Rh5 Kd3 53.Rh4 Kc3 54.e4 Kb3 55.Kf4 Kc3 56.e5 Kb3 57.e6 Kc3 58.e7 Kb3 (58...Kb4 59.Ke3 Kc5 60.e8Q Kb6 61.Qc6 Ka7 62.Ra4 Kb8 63.Ra8) ½–½. bratek55 (1630) – gozef (1700), kurnik, 2011.

4.dc3 Nc6 5.Bh8 Nh6 (5...Nf6 6.e3+-) 6.e3 (better is 6.Nf3+-) 6...Qf6 (6...Ke7 7.Bd4 Qg8+-) 7.Bf6 Ne5 8.Be5 c5 9.Qh5 Rb8 10.Bb8 (10.Qh6 d6 11.Bd6 Kd7 12.Qf8 Kc6 13.Bb8 b5 14.Qc8 Kb6 15.Qc7 Ka6 16.Qa7) 10...b6 11.Qh6 Ba6 (11...d6 12.Qf6 c4 13.Bd6 Kd7 14.Qe7 Kc6 15.Qc7 Kd5 16.Nd2 Bd7 17.Bc4) 12.Bd6 Bf1 13.Qf8 1–0. Bonetti,Shane – guest187, ICC, 2002.

4.dc3 e5+-.

4.Bc3 Nf6+-.

4.Nc3!? b6+-.

4.Nc3 f6 5.Bh8 Nc6 6.Nf3 (6.e3 Qe7+-) 6...Nh6 (6...Kf7 7.e3 Nh6 8.Bf6 Qf6 9.Ne4+-) 7.Bg7 (better is 7.Ne4 Ng4 8.h3 d5 9.hg4 de4+-) 7...Nf5 8.Bh8 Ke7 (8...Kf7 9.e4 Nfd4 10.Nd4 Nd4 11.Qh5 Kg8 12.Bf6 Qf6 13.e5+-) 9.Bf6! Kf6 10.e3 e5 11.Bd3 e4 (11...d5 12.e4 d4 13.Nd5 Kg7 14.Nc7 Qc7 15.ef5+-) 12.Ne4 Ke7 13.Neg5 d6 14.Nh7 Ng7 15.0-0 Bf5 16.Bf5 Nf5 17.d4 Qh8 18.Nhg5 Rg8 19.Qd3 Rf8 (19...Qf6 20.Qe4 Kd7 21.Qf4+-) 20.Qe4 Kd7 21.Qe6 Kd8 22.Nf7 Rf7 23.Qf7 Nce7 24.c4 b5 (24...Kd7 25.Rab1 Nh6 26.Qh5+-) 25.Rab1 a6 26.cb5 ab5 27.Rb5 Nh6 28.Rb8 (28.Qe6 Nc6 29.Rfb1 Qd4 30.Rb8 Nb8 31.Rb8) 28...Nc8 29.Qg6 (29.Qe6 Qd4 30.Rc8) 29...Ng4 30.Qg4 (30.Qg4 Ke7 31.Rc8 Qc8 32.Qc8 c6 33.Qc7 Kf6 34.Qd6 Kg7 35.Ne5 Kh8 36.Qg6 c5 37.Nf7; 30.Qe6 Qh2 31.Nh2 Nh2 32.Rc8) 1–0. Fournier,Frederic (1700) – HEBERDANIEL84(C) (1725), Active, 2005.

4.Nc3 Nf6 5.Bh8 e5 6.e4+-.

4.Nc3 Nh6 5.Bh8 f6 (5...d6 6.e4+-) 6.e3 Kf7 7.Qh5 Kg8 8.Qh6 Qe7 (8...Kh8 9.Ne4 f5+-) 9.Bf6 Qf7 10.Nf3 Qg6 11.Qf4 (11.Qg6!? hg6 12.Ne5 Kh7+-) 11...d6 12.Bd3 (12.e4 Nc6+-) 12...Qf7 13.Ng5 Qe8 14.Bh7 Kf8 15.Bd8 Kg7 16.Qf6 1–0. Rush,Bradley – Withrow,Avis, IECG, 1995.

4.e3 Ne7 5.Bh8 Ng6 6.Bb2 (6...d5 7.Nc3+-) 1–0. Bonetti,Shane – pcisme, ICC, 2002.

4.Bh8 d5 5.e3+-.

4.Bh8 Qh4 5.d4 (5.d4 Bb6 6.Nf3+-) 1–0. Wall,Bill – Zlulian, chess.com, 2009.

4.Bh8 Bc5 5.Nc3 Qh4 6.e3 Nd4 7.ed4 Bd4 8.g3 Qe4 9.Ne4 Bf2 10.Kf2 f5 11.Qh5 Kd8 12.Qf7 Ne7 13.Qf8# 1–0. marre – MarsPF2, internet, 2010.

4.Bh8 d5 5.a3 Be7 6.e3 1–0. Finogenov,Mikhail – Koltsov,Andrey, RUS–Cup sf, 2005.

4.Bh8 d5 5.e3+-.

4.Bh8 f6 5.a3 Bd6 6.e4 Qe7 7.Qh5 (7.d4 Bf4+-) 7...Qf7 (7...Kd8 8.Nf3+-) 8.Be2 (8.Qf7 Kf7 9.Nf3 Nge7+-) 8...Ne5 (8...Qg6 9.Qg6 hg6 10.Nf3+-) 9.Qf7 Nf7 10.Bh5 (10.Bg7 Ng5 11.Bh5 Kd8+-) 10...h6 (10...Be5 11.c3+-) 11.Nc3 (11.d4 Kf8 12.Bf7 Kf7+-) 11...Kf8 12.Bf7 Kf7 13.d4 (13.Nb5 Bf4+-) 13...Kg6 (13...Ne7 14.e5 fe5 15.de5+-) 14.e5 (14.Nb5 a6 15.Nd6 cd6+-) 14...fe5 (14...Be7 15.Nb5 c5 16.Nc7+-) 15.Be5 Be5 16.de5 d6 (16...d5 17.Nf3+-) 17.ed6 (17.Nb5 de5 18.Nc7 Rb8+-) 17...cd6 18.0-0-0 d5 19.Nf3 Nf6 20.Rhe1 Bd7 21.Ne5 Kg7 (21...Kf5 22.Nd7 Nd7 23.Nd5+-) 22.Nd7 Nd7 23.Re6 Nb6 (23...Rf8 24.Re7 Rf7 25.Nd5 Re7 26.Ne7+-) 24.Nd5 Nd5 (24...Nc4 25.Re7 Kg6 26.Rb7+-) 25.Rd5 b6 (25...Kf7 26.Rh6 Kg7 27.Rhd6+-) 26.Rdd6 (26.Rd7 Kf8 27.Rh6 Kg8+-) 26...Rf8 (26...Kf7 27.Rh6 Kg7 28.f4+-) 27.Rh6 (better is 27.Re7 Rf7 28.Rf7 Kf7 29.Rh6 b5 30.Rh7 Kf6 31.Ra7 Ke6+-) 27...Rf2 28.Rdg6 (28.Rhg6 Kh7 29.Kb2 Rf5+-) 28...Kf7 29.Rg3 Re2 (29...b5 30.Ra6 Re2 31.Ra7 Kf6 32.Ra6 Kf5 33.Rb6+-) 30.Rh7 Ke6 31.Ra7 Kd5 32.Ra4 (32.Rg6 b5 33.Rb7 Re1 34.Kd2 Rb1 35.Rg5 Kd6 36.Rb6 Ke7 37.Rg7 Kf8 38.Rc7 Rd1 39.Kd1 Kg8 40.Rb8) 32...Kc5 (32...b5 33.Rb4 Kc6 34.Rg6 Kc5 35.Rg5 Kd6 36.Kb2+-) 33.h4 (33.Rb4!? Rf2+-) 33...Re8 (33...b5 34.Rb4 Re5 35.Rc3 Kd6 36.a4 ba4 37.Ra4+-) 34.Rg5 (34.Rc3 Kd5+-) 34...Kc6 (34...Kd6 35.Rd4 Kc7 36.g4+-) 35.h5 (better is 35.Rc4 Kb7 36.g4 Re3+-) 35...b5 (35...Re6 36.Rg6 Kd5 37.c4 Ke5 38.Re6 Ke6 39.Rb4+-) 36.Rh4 (36.Rb4 Ra8+-) 36...Re1 (36...Ra8 37.h6 Ra3 38.h7 Ra1 39.Kd2 Rd1 40.Kd1 Kb6 41.h8Q Ka5 42.Qd8 Ka6 43.Rh6 Kb7 44.Rg7) 37.Kd2 (37.Kb2!? Re8+-) 37...Re8 (37...Ra1 38.Rb4 Kd6 39.Rb3+-) 38.h6 (better is 38.c4 Rd8 39.Kc3 bc4+-) 38...Rh8 (38...Rd8 39.Ke3 Ra8 40.Rg6 Kd7 41.h7 Re8 42.Kd4+-) 39.h7 Kd7 40.Rg8 (40.Rg8 Rh7 41.Rh7 Kc6 42.Rh6 Kc5 43.Rg5 Kd4 44.Rh4) 1–0. Choong,Yita – Cohn,Jason, AUS–ch U12 Sydney, 2002.

4.Bh8 c6 5.Bb2 Nd7 6.e3 Qe7 7.Nf3 (7...e5 8.Be2+-) 1–0. Bonetti,Shane – DoctorRook, ICC, 2002.

4.Bh8 Nc6 5.e3 d4 6.ed4 Nd4 7.c3 Nc6 8.cb4 Nb4 9.Qg4 Nc2 10.Kd1 Na1 11.Qg8 Kd7 12.Qh7 Qe7 13.Ba1 b6 14.Bb5 c6 15.Bc6 Kc6 16.Qe4 Kd7 17.Qa8 Qb4 18.Qa7 Kc6 19.Nc3 Qg4 20.Nf3 Qg2 21.Ne5 Kc5 22.Qc7 Kd4 23.Ne2 Ke4 24.Qc2 Kd5 25.Qc6# 1–0. Rosner,Dirk – random2, atlanticchess.com, 2001.

4.Bh8 Na6 5.Bc3 f6 (5...Nf6 6.e3+-) 6.Nf3 (6.e3!? Bc3 7.Qh5 Kf8 8.Nc3 Kg7+-) 6...e5 7.e3 Bg4 8.h3 Bf3 9.Qf3 Rb8 10.Ba6 Ke7 (10...ba6 11.Qh5 Ke7 12.Qh7 Ke6 13.Qd3+-) 11.Bb4 (better is 11.Bb7 a5+-) 11...Ke6 (11...ba6 12.Nc3 c5 13.Ba3+-) 12.Bc4 Ke7 13.Nc3 (better is 13.Qf5!? Qf8 14.Qh7 Kd8 15.Bg8 Qe7+-) 13...Qd7 14.Qh5 (better is 14.Qg3 Rf8 15.Bg8 Kd8+-) 14...h6 15.Qf7 (15.Qf7 Kd8 16.Qg8 Qe8 17.Qg7+-) 1–0. Fournier,Frederic (2065) – elgueroarroyo (1780), Active, 2004.

4.Bh8 d5 5.e3 Nf6 6.Nf3+-.

4.Bh8 e5 5.c3 Bc5 6.e3 Bf5 7.Qf3 Qg5 (7...Ne7+-) 8.Qb7 1–0. Karlsson,Patrik (1885) – Cory,David, IECG, 2002.

4.Bh8 d5 5.Nf3+-.

4.Bh8 f6 5.e3 Qf8 6.Qh5 Ke7 (6...Qf7 7.Qf7 Kf7 8.Bd3+-) 7.Qh7 Qf7 8.Qf7 Kf7 9.Nf3 Nh6 10.Nc3 Bc3 11.dc3 Nc6 12.Bb5 (12.Be2 d5 13.Nh4 e5 14.Bh5 Ke6+-) 12...Ne7 13.0-0 (better is 13.Nh4 d5 14.Be2 e5 15.Bh5 Ke6+-) 13...Ng6 14.Bf6! Kf6 15.Bd3 Ne5 16.Ne5 Ke5 17.f4 Kd6 18.Rad1 Ke7 19.f5 (19.h3 b6+-) 19...d5 (19...Nf5 20.Bf5 ef5 21.Rf5+-) 20.f6 Kf7 21.e4 Ng4 22.ed5 (better is 22.Rde1!? Bd7+-) 22...Ne3 23.de6 (better is 23.g4!? ed5 24.g5 Bh3+-) 23...Be6 24.Rde1 Nf1 25.Rf1 Re8 26.h3 (better is 26.a4 Rh8+-) 26...Ba2? (26...Rh8 27.a4+-) 27.g4 (27.c4 Re6 28.g4 Rf6+-) 27...Be6 (27...Re3 28.c4 Rh3 29.Kg2+-) 28.Kh2 (28.g5 Rg8 29.h4 a5+-) 28...b6 (28...Rg8 29.Kg3+-) 29.g5 c5 (29...Kf8 30.g6+-) 30.g6 Kg8 (30...Kf8+-) 31.f7 Bf7 32.gf7 Kf8 33.fe8Q Ke8 34.h4 Ke7 35.h5 Ke6 36.h6 Ke5 (36...Ke7 37.h7 Ke6 38.Bc4 Ke7 39.Rf7 Kd6 40.h8Q b5 41.Qf6) 37.h7 Kd5 (37...Ke6 38.h8Q c4 39.Rf6 Ke5 40.Qd8 cd3 41.Qd4) 38.h8Q c4 (38...a6 39.Qf6 b5 40.Rf5) 39.Qd8 (39.Qf6 cd3 40.Rf5 Kc4 41.Qc6) 39...Kc5 (39...Kc6 40.Be4 Kb5 41.Qd5 Ka4 42.Ra1) 40.Qd4 (40.Rf5 Kc6 41.Be4) 40...Kb5 (40...Kc6 41.Be4 Kb5 42.Qe5 Ka4 43.Ra1) 41.Qc4 Ka5 42.Qb5 (42.Ra1) 1–0. Fournier,Frederic – trancadis, Active, 2007.

4.Bh8 Nf6 5.Bf6 (5.c3!? Bc5+-) 5...Qf6 6.c3 Bc3 (6...d5+-) 7.Nc3 Nc6 8.e3 Nb4 9.Nf3 Qf5 10.d4 (10.Nd4 Qe5+-) 10...Qc2 (10...Nc2 11.Kd2 Na1 12.Qa1+-) 11.Qc2 (better is 11.Rc1 Qd1 12.Kd1 a6+-) 11...Nc2 12.Kd2 Na1 13.Bd3 b6 14.Ra1 Bb7 15.Bh7 Bf3 16.gf3 Ke7 17.Be4 Rh8 18.Rh1 a6 19.a4 b5 (19...c5 20.d5+-) 20.ab5 ab5 21.Nb5 d5 22.Bd3 c6 23.Nc3 Ra8 24.h4 Rh8 25.h5 Kf6 26.e4 de4 27.fe4 Kg5 28.Be2 Kf4 29.Kd3 e5 30.d5 cd5 31.ed5 Rd8 32.f3 f6 (32...Kf5 33.Ke3 Kf6 34.Ne4 Kg7 35.Rg1 Kh6 36.Nf6+-) 33.h6 (33.Rg1 f5+-) 33...Rh8 (33...Kg5 34.h7 Rh8 35.Kc4+-) 34.h7 (better is 34.Ne4!? Rd8 35.Rh4 Kf5+-) 34...Kf5 35.Ne4 Kg6 36.d6 Kf7 37.Nc5 Ke8 38.Kc4 Kd8 39.Kd5 (39.Rg1 Rf8 40.Rg8 Ke8 41.h8Q Kf7 42.Qg7 Ke8 43.Qf8) 39...Kc8 (39...Ke8 40.f4! Kf8 41.Ne6 Ke8 42.Bh5 Kd7 43.Rc1 Rc8 44.h8R Rc1 45.Rd8) 40.Bb5 White prepares the advance d7 (40.Ra1 Kb8 41.Nd7 Kc8 42.Kc6 Rh7 43.Ra8) 40...Kd8 (40...Kb8 41.Nd7 Kb7 42.Bc6 Kc8 43.Rb1 Rh7 44.Rb8) 41.d7 (41.Ra1 Rh7 42.Ra8) 41...e4 (41...Ke7 42.Rg1 Kf7 43.Bc4 f5 44.Ke5 Ke7 45.Rg7 Kd8 46.Ne6) 42.fe4 (42.Kd6 Rh7 43.Ne6) 42...Kc7 43.Ne6 Kb6 44.d8Q Rd8 45.Nd8 Kb5 46.h8Q Kb4 47.Qf6 Kb3 48.Qb6 (48.Rh3 Ka4 49.Qa6 Kb4 50.Nc6) 48...Kc3 (48...Kc2 49.Kc4 Kd2 50.Qf2) 49.Rc1 (49.Rh2 Kd3 50.Qd4) 49...Kd2 50.Qb2 (50.Qc5 Ke2 51.Qc3 Kf2 52.Rc2 Kf1 53.Qa1) 50...Ke3 51.Qd4 (51.Rc3 Kf4 52.Ne6 Kg4 53.Qg2 Kh5 54.Qg5) 51...Kf4 (51...Kf3 52.Qc3 Kf4 53.Ne6 Kg4 54.Rg1 Kh5 55.Qh8) 52.Rf1 (52.Qf2 Kg4 53.Rg1 Kh5 54.Qh2) 52...Kg5 (52...Kg3 53.Qc3 Kh4 54.Rg1 Kh5 55.Qh8) 53.Qf6 (53.Rg1 Kf4 54.Qf2) 53...Kh5 54.Qg7 Kh4 55.Rh1 1–0. Fournier,Frederic – trigo1, Active, 2007.

4.Bh8 f6 5.Bg7 (better is 5.e4 Nh6 6.Qh5 Nf7 7.Qh7+-) 5...Kf7 6.e4 (6.Bh8!? Nh6+-) 6...Kg7 7.d4 Nh6 8.Bd3 Qe8 (8...d5 9.Nf3+-) 9.Nh3 (9.Qf3 c5 10.c3 d5+-) 9...e5 10.0-0 (10.d5 Bc5+-) 10...d6 11.Kh1 Bg4 12.Be2 f5 13.ef5 Bf5 14.Bd3 e4 15.Be2 d5 (15...Bh3 16.gh3 Bf6 17.c3+/–) 16.Nf4+- Qf7 17.Bh5 (17.f3!? e3 18.Qc1 Nc6 19.Qe3 Re8+-) 17...Bg6+/– 18.Ng6 hg6 19.Be2 Nd7 20.Nd2 Nf5 21.Bg4 Rh8 22.Rb1 Bd6 23.Bh3 (23.h3 Nb6+/–) 23...b6+= 24.Qg4 (24.c4 c5 25.dc5 Nc5 26.cd5 Qd5+=) 24...Rh5 (24...Nd4 25.c3 Nf6 26.Qg5-/+) 25.c4 (better is 25.Nb3+=) 25...e3?? (better is 25...Nd4 26.cd5 Nf6+=) 26.fe3+- Nf6 27.Qe2 Ne4 (27...Qe6 28.Rbe1+-) 28.Ne4 de4 29.Rf2 Rg5 (29...Qf6 30.Rf5! Rf5 31.Bf5 gf5+-) 30.g4 Bg3 (30...Ng3 31.hg3 Qe6 32.Rbf1+-) 31.Rf5 (better is 31.Rff1+-) 31...gf5 32.hg3 Kf6 (32...fg4 33.Bg2+- (worse is 33.Bg4 Qg6 34.Bh3 Rg3+-)) 33.Rf1 Qh7 (33...Qg8 34.Qc2 Rg4 35.Qf2+-) 34.Kg2 Ke6 (34...Ke7 35.gf5 Qg8 36.Qf2 Qc4 37.Qf4+-) 35.d5 (35.Rf5 Qg8+-) 35...Kd6 (35...Kd7 36.gf5 Kd8 37.f6+-) 36.Rf5 Rg8 (36...Rg6 37.Qf2 Qg7 38.Qf4 Kc5 39.d6 Kb4 40.Qe4 Qb2 41.Rf2+-) 37.g5 Rh8 (37...c6 38.Qb2 Qg7 39.Qa3 c5 40.Rf6 Qf6 41.gf6 Rh8 42.Qa7 Re8 43.Qb6 Ke5 44.f7 Re7 45.f8Q Rh7 46.Qe6) 38.Qg4 (38.Rf6 Ke7 39.Qg4 Qh3 40.Qh3 Rh3 41.Kh3 b5+-) 38...Kc5 (38...Qh5+-) 39.d6 Kd6 (39...Kb4 40.Rb5 Kc3 41.dc7+-) 40.Rd5 (40.Qf4 Kc6 41.Qe4 Kd6 42.Qe5 Kd7 43.Rf7 Kc6 44.Qc7) 40...Kc6+- 41.Qd7 (better is 41.g6 Qe7 42.Qe6 Qe6 43.Be6 Rb8+-) 41...Qd7 (41...Kb7 42.Qh7 Rh7 43.g6+-) 42.Bd7 Kb7 43.g6 c6 (43...Rg8 44.Bf5 a6 45.Be4 Kc8+-) 44.Rg5 Rg8 45.g7 Rd8 46.Be6 Kc7 (46...Ka6 47.Rf5 Re8 48.c5+-) 47.g8Q Rg8 48.Rg8 (48.Bg8 a6+-) 48...Kd6 49.Bf7 Ke7 (49...Kc5 50.Re8 b5 51.cb5 cb5 52.g4+-) 50.Bh5 (50.Bg6 Kd6+-) 50...Kf6 (50...Kd6 51.Bg6+-) 51.g4 c5 52.Kg3 Ke5 53.Re8 (53.Rg6 b5 54.Rh6 a6 55.Bf7 bc4 56.Bc4 a5 57.Re6) 53...Kf6+- 54.Re4 a6 55.Rf4 Ke5 56.g5 b5 (56...Kd6 57.g6 Ke6 58.g7 Kd6 59.Rf6 Ke5 60.g8Q Kf6 61.Qf7 Ke5 62.Qe7 Kf5 63.e4) 57.g6 bc4 (57...Kd6 58.g7 Ke6 59.g8Q Ke7 60.Qg7 Ke6 61.Rf6 Ke5 62.Qe7) 58.Rc4 (58.g7 Kd5 59.g8Q Kc6 60.Qc8 Kb5 61.Qb7 Ka5 62.Rf6 c3 63.Ra6) 58...Kd5 59.Rc5! (59.Rc5 Kd6 60.Rc8 Ke6 61.g7 a5 62.g8Q Ke5 63.Rc5 Kd6 64.Qf8 Ke6 65.Bg4) 1–0. Trigance,Emile – Salinas,Marcelo, FICGS, 2011.

4.Bh8 Bf6 5.Bf6 Qf6 6.Nc3 a6 7.e3 b5 8.a3 a5 (8...Ne7 9.Nge2+-) 9.Nb5 c6 (9...Kd8+-) 10.Nc7 Ke7 11.Na8 Na6 12.Nb6 Bb7 13.Nf3 (13.Rb1 Nc5+-) 13...Nc5 14.Be2 (14.d4 Ne4 15.Qb1 Nd6+-) 14...Ne4 15.0-0 c5 16.d3 (16.Rb1 Nd6+-) 16...Ng5 17.Ng5 Qg5 18.Bf3 Bf3 19.Qf3 Qf6 20.Nc4 (20.Qb7 Qc3 21.Nd7 c4 22.Ne5 Kf6 23.Qf7 Ke5+-) 20...e5 21.Qf6 (better is 21.Qa8 Nh6+-) 21...Nf6 22.f4 1–0. Fournier,Frederic – paniker, Active, 2006.

4.Bh8 Bf6 5.Bf6 Qf6 6.Nc3 Nh6 7.e3 Nc6 8.Nf3 d5 9.Bb5 Bd7 10.Bc6 Bc6 11.0-0 0-0-0 12.d4 Rg8 13.g3 Qf5 14.Nh4 Qh3 15.Nf3 Ng4?? (15...Qf5 16.Rb1 f6+-) 16.Ne2+- Bb5 17.Re1 Nf6 18.Nf4 Qf5 19.a4 Ba6 20.Nh4 Qg5 21.Qf3 (better is 21.Nhg2+-) 21...Qh4 22.Ng2 (22.Nd3 Bd3 23.cd3 Rg6+-) 22...Qg5 23.Ra3 (23.Reb1 Qg6+-) 23...Qh6 24.Qf4 Qg6 25.Rc3 Bc4 26.f3 Qg7 (26...Nh5 27.Qe5+/–) 27.e4+- c6 (27...Ne8 28.e5+-) 28.e5 Nd7 29.Ne3 Ba6 30.Rb3 Nb6 31.Rb4 Rh8 32.a5 Nc4 33.Nc4 Bc4 34.Reb1 ½–½. Paauwe,J – Zweedijk,L, PK Zeeland, 2001.

4.Bh8 Bf6 5.Bf6 Qf6 6.d4 c5 7.Nf3 Nc6 8.e3 e5 9.de5 Ne5 10.Nbd2 b6 11.Ne5 Qe5 12.Nf3 Qc3= 13.Nd2 Nf6?? 14.Be2 Ne4 15.0-0 Nd2 16.Re1 Ne4?? 17.Qd5 Rb8 18.Qe4 Kd8 19.Qh4 Kc7 20.Qh7 Qf6 21.Bc4 Bb7 22.Qf7 Qg5 23.Qf4 Qf4 24.ef4 Rg8 25.g3 d5 26.Bb5 a6 27.Bd3 c4 28.Bf5 Rf8 29.g4 b5 30.h4 a5 31.h5 a4 32.h6 b4 33.h7 b3 34.ab3 ab3 35.cb3 c3 36.Re7 Kc6 37.Rg7 (37.Rg7 Rh8 38.Ra7+-) 1–0. Miner,P Allen – Chen,H (2190), 1st Thanksgiving Open, Stillwater USA, 2009.

4.Bh8 d6 5.Bf6 Nbc6 (5...Nd7 6.Bh4+-) 6.e3 Qd7 7.Bb5 a6 8.Be7 Qe7 (8...ab5 9.Bg5 e5 10.c3+-) 9.Bc6 bc6 10.Nf3 Rb8 11.a3 Bc5 12.Nc3 Bb6 13.Rb1 Bb7 14.d3 c5 15.e4 Qf6 16.Na4 Ba5 17.Nd2 Kd8 (17...Qd4 18.c3! Bc3 19.Nc3 Qc3 20.Rb3+-) 18.Nb2 (18.0-0 Bd2 19.Qd2 h6+-) 18...Kc8 (18...Be4 19.de4 Rb2 20.0-0+-) 19.Nbc4 Bd2 20.Qd2 d5 21.Na5 Ba8 22.Rb8 Kb8 23.0-0 d4 (23...de4 24.de4 Qd4 25.Qg5+-) 24.Rb1 Kc8 25.Nc4 Bc6 26.Qa5 Qg7 (26...Bb5 27.Nd2 e5+-) 27.Qa6 Kd7 28.Na5 (better is 28.Rb8!? Ke7 29.Qc6 Kf6 30.Qc7 h5+-) 28...f5 (28...Ba4 29.Qc4 Bc2 30.Qb5 Ke7 31.Qc5 Kf6 32.Nc6+-) 29.Qc6 (29.Qc6 Ke7 30.Qc7 Kf6 31.Qd8 Kg6 32.Rb7 fe4 33.Rg7 Kg7 34.Qe7 Kg6 35.Qe6 Kg7 36.Qe7 Kg8 37.de4 d3 38.cd3 c4 39.e5 h6 40.e6 Kh8 41.Qf7 cd3 42.e7 d2 43.e8Q) 1–0. Fournier,Frederic – rafai, Active, 2007.

4.Bh8 Ng6 5.Bc3 Bc3 6.Nc3 Qf6 7.e3 Nc6 8.Qf3 Nb4 (8...Qg7+-) 9.Qf6 1–0. Fournier,Frederic – gorimoto, Active echecs21.com, 2004.

4.Bh8 Ng6 5.Bc3 Bc5 6.d4 Bb6 7.e3 d5 8.Nf3 Qf6 9.Bb5 c6 10.Be2 Nd7 11.Nbd2 c5 12.Bb5 a6 13.dc5 (13.dc5 Qc3 14.Bd7 (14.cb6?! ab5 15.Nd4 Nb6+-) 14...Bd7 15.cb6+-) 1–0. Schandorff,L – Klein,Heinz, Beijing, 1998.

4.e4 e5 (4...Ne7 5.Qh5 Ng6 6.Bh8+-) 5.Qh5 Ke7 6.c3 Ba5 7.Bh8 1–0. Wall,Bill – JD, chess.com, 2009. — — William Dale Wall, a prominent American chess historian and author, has made significant contributions to the literature of the game, particularly regarding chess miniatures and opening traps. — — Birth and Early Life: Bill Wall was born on May 11, 1951, in Raymond, Washington. He was introduced to chess around the age of 10 by his parents, both of whom were chess players. He grew up in various locations but became more seriously involved in the chess community in the late 1960s after joining the Tacoma Chess Club in 1969. — — Professional and Chess Career: His professional life was primarily centered on military service and computer science. He served as an officer in the United States Air Force from 1970 to 1995 and later worked as an information systems security engineer for organizations like NASA and L3Harris. — — Within the chess world, Wall is best known as a prolific writer and historian. He has authored over 40 books and written more than 1,000 articles. His work often focuses on: * Chess miniatures: Short games typically lasting 25 moves or fewer; * Opening traps: Hidden tactics that can lead to quick wins or losses in the early stages of a game; * Chess history and trivia: Lesser-known facts about famous players, celebrities who play chess, and the general evolution of the game. — — He has also held leadership roles in the chess community, serving as the president of both the North Carolina Chess Association and the Ohio Chess Association. — — Chess Openings and Style: Wall is known for a tactical and adventurous playing style, which he has sometimes self-deprecatingly described as trappy. He has a particular affinity for unusual or provocative openings, which is reflected in his extensive bibliography. Key openings he has written about or played include: * The Grob Attack: 1. g4; * The Orangutan or Sokolsky Opening: 1. b4; * The King's Gambit: 1. e4 e5 2. f4; * The Smith-Morra Gambit: 1. e4 c5 2. d4; * Larsen's Opening: 1. b3. — — His books on these subjects, such as 700 Opening Traps and 500 Sicilian Miniatures, are considered staples for amateur players looking to learn tactical shortcuts and avoid early blunders. — — Tournaments: While primarily recognized for his research and writing, Wall has been an active tournament player for decades. He has participated in hundreds of events across the United States and abroad while stationed with the Air Force. Some notable tournament participations and records include: * U.S. Open: Participated in several editions, including 1988 in Boston; * New York Open: Competed in the 1992 event; * Air Force Championship: A regular competitor during his military career, including the 1992 championship; * Regional Events: He was one of the most active players in various states, including North Carolina, Ohio, and California, during different periods of his life. — — He reached the level of a USCF National Master and has also served as a certified tournament director. — — Note created January 2026. (AI)

4.Nf3 Ne7 5.Bh8 Kf7 6.Bf6! Kf6 7.c3 Ba5 8.Qa4 Nbc6 9.Qf4 Kg7 10.e3 Ng6 11.Qg3 Nce7 12.Bd3 c6 13.Nh4 Bc7 14.Qg4 d5 15.Bg6 hg6 16.d4 e5 17.Qg5 e4 18.0-0 Qf8 (18...Qd6 19.f4+-) 19.f4 (19.f3 ef3 20.Rf3 Qe8+-) 19...Bd8 20.Qe5 Kh7 21.Qd6 Qe8 22.Nd2 Bd7 23.c4 (23.g3 Nc8 24.Qe5 Bh4 25.gh4 Nb6+-) 23...Kg8? (better is 23...Nc8 24.Qe5 Bh4 25.cd5 cd5 26.Qd5 Bc6+=) 24.a4 Kh7 25.Rab1 Nc8 26.Qe5 Bh4 27.Qe8 Be8 28.Rb7 Kh6 29.f5?? (better is 29.g4 g5 30.f5+-) 29...gf5= 30.Rf5? (better is 30.Rb3=) 30...Nd6-+ 31.Rf4 Nb7 (better is 31...Bg5 32.Rb4 Bf4 33.ef4 e3-+) 32.Rh4-/+ Kg7 33.cd5 (33.Rg4!? Bg6 34.Rg5-/+) 33...cd5-+ 34.Rg4 Kf6 35.Rf4 Ke6 36.Rf8 Rd8 37.g4? (better is 37.Rh8!?-/+) 37...Ba4-+ 38.Rd8 Nd8 39.Nb1 a5 40.Kf2 Bb3 41.h4 a4 42.Kg3 Nf7 43.Kf4 Kf6 44.Na3 Bd1 45.Nb1 Bc2 46.Na3 Bd3 47.h5 Ng5 48.Kg3 Nh7 49.Kf4 Be2 50.Nc2 (50.Nb1 Kf7-+) 50...Bd1 51.Na3 Bb3 (51...Ng5!? 52.Kg3-+) 52.Nb1 Bc2?? (better is 52...Bc4-+) 53.Na3= Bd3 54.h6 Kg6 55.Ke5 Bc4 56.Kd6 (56.Kf4 Bb3-+) 56...Kh6 57.Kc5 Bb3 58.Nb1 Nf6 59.Kb4 Ng4 60.Nc3 Ne3 61.Na4 (61.Ne2-+) 61...Ba4 62.Ka4 Kg5 0–1. Beljushina,Sonja (1635) – Plekhanov,Georgy, Sterlitamak RUS, Rochinskiy Open, 2012.

4.Bh8 c6 5.e3 Qb6 (5...Qe7+-) 6.Qh5 Kd8 7.Qf7 Kc7 8.Qg8 Qc5 (8...Be7 9.Nc3 Qb2 10.Rb1 Qc2 11.Qf7+-) 9.Bf6 Qc2 10.Qd8 Kd6 11.Ne2 Kd5 12.Nf4 Kc5 (12...Kd6 13.Qf8 Kc7 14.Bd8) 13.Qf8 d6 14.Bd4 1–0. Fournier,Frederic (1765) – layner322(C), Active, 2006.

4.Bh8 d5 5.e3 Qe7 6.Qg4+-.

4.Bh8 d5 5.e4! Qe7 6.c3 Bd6 7.Qg4+-.

4.Bh8 Bd6 5.e3 Be5 (5...Qe7 6.Qh5 Qf7 7.Qf7 Kf7 8.Bd3+-) 6.c3 (better is 6.d4!? Bd6 7.Qh5 Kf8+-) 6...Qe7 7.d4 Bd6 8.Nf3 b6 9.Be2 Nc6 10.Nbd2 Bb7 11.0-0 0-0-0 12.Bb5 (better is 12.Ne4!? Ba3 13.Qa4 Na5+-) 12...Na5 (12...Nh6 13.Bf6! Qf6 14.Ne4+-) 13.Qe2 (13.c4 c6 14.c5 Bc7+-) 13...c6 (13...Nh6 14.Bf6! Qf6 15.Bd3+-) 14.Ba6 b5 (14...Nh6 15.Nb3 b5 16.Bb7 Nb7 17.a4+-) 15.Bb7 Nb7 16.Ne4 (16.a4 Nh6 17.ab5 Rh8 18.Ra7 c5+-) 16...Bc7 (16...Bb8 17.a4 d5 18.Ned2+-) 17.a4 f5 (17...d5 18.ab5 de4 19.bc6 ef3 20.cb7 Kb8 21.Qf3+-) 18.Nc5 (18.Ned2 Nh6 19.Be5 ba4 20.Bc7 Kc7+-) 18...Nh6 (18...Nc5 19.dc5 Qc5 20.ab5 cb5 21.Rfb1+-) 19.Be5 (19.Nb7 Rh8 20.ab5 Kb7 21.bc6 Kc8 22.Ra7 Qd6 23.Ra8 Bb8+-) 19...Be5 20.Ne5 Qd6 (20...Nc5 21.ab5 Rg8 22.Ra7 Qg7+-) 21.Nb7 Kb7 22.ab5 Ka8 (22...cb5 23.Qb5 Qb6 24.Rfb1 Qb5 25.Rb5 Ka8 26.Rba5+-) 23.bc6 (better is 23.b6 Qb8 24.Rfb1+-) 23...dc6 24.Qa6 Qc7 25.Nc6 Rd6 (25...Rd7 26.Rfb1 Qh2 27.Kh2 Ng4 28.Kg1 Rd4 29.Qa7) 26.Qa7 Qa7 27.Ra7 1–0. Fournier,Frederic (1670) – bigtiger02(C) (1690), Active, 2004.

4.Bh8 Bd6 5.e4!? Qe7+-.

4.Bh8 Bd6 5.Nf3 Kf7 6.e3 (better is 6.e4 Ne7 7.e5 Qh8 8.ed6 cd6+-) 6...Nh6 7.Bf6! Qf6 (7...Qf6 8.Nc3 Combination; 7...Kf6 8.Nc3 Combination) 8.Nc3 Bb4 9.Ne4 Bd2 (9...Qe7+-) 10.Nfd2 (10.Qd2?! Qa1 11.Ke2 b6+= (worse is 11...Qa2 12.Qc3+/–); worse is 10.Kd2 Qe7+-) 10...Qe5 11.Bd3 d5 12.Ng3 Nc6 (12...Kg8 13.Rb1+-) 13.Qh5 (13.Bh7!? Qg7 14.Bd3 Ke8+-) 13...Kg7 14.0-0 Bd7 15.Qe5 (15.Rab1!? b6+-) 15...Ne5 16.f4 Nd3 17.cd3 Bb5 18.Rfb1 a6 19.a4 Bd3 20.Rb7 Rc8 21.Rc1 Kf6 22.Rcc7 Rc7 23.Rc7 Ng4 (23...Nf5 24.Nf5 Kf5 25.Rh7+-) 24.e4 d4 (24...de4 25.Nde4 Be4 26.Ne4 Kf5 27.Nc5 Kf4 28.Rh7+-) 25.Rd7 (25.Nf3!? e5+-) 25...e5 26.fe5 Ke5 27.Nf3 Kf4 28.Rd4 Ke3 29.Nf1 (better is 29.Nf5 Ke2 30.Ng5+-) 29...Bf1 30.Kf1 (30.h3!? Bg2 31.Kg2 Ne5+-) 30...Nh2 31.Ke1 (31.Nh2!? Kd4 32.Nf3 Ke4 33.Ng5 Kd5 34.Nh7 Kd6+-) 31...Nf3 32.gf3 Kd4 33.Ke2 h5 (33...Ke5 34.Ke3+-) 34.a5 h4 35.Kf2 Ke5 36.Kg2 Kf4 37.Kh3 Kf3 38.e5 Ke4 39.e6 Kd5 40.e7 Kc5 41.e8Q Kb4 42.Kh4 (42.Qd8 Kc4 43.Qc7 Kd5 44.Qb7 Ke5 45.Qa6 Kd5 46.Qb5 Ke6 47.a6 Ke7 48.a7 Ke6 49.a8Q Ke7 50.Qe5 Kd7 51.Qae8) 42...Ka5 43.Qb8 (43.Qc6 Kb4+-) 43...Ka4 44.Kg4 a5 45.Kf4 Ka3 46.Ke4 a4 (46...Ka2 47.Kd3 a4 48.Kc2 a3 49.Qb1) 47.Kd3 Ka2 48.Kc2 a3 49.Qb1 1–0. Fournier,Frederic (1935) – pablogolz (1750), Active, 2004.

4.Bh8 Kf7 5.c3 Bf8 6.Qc2 f5 7.g4! d6 (7...fg4 8.Qh7 Double attack (8.Qh7 Pinning; 8.Qh7 Deflection; 8.Qh7 Decoy)) 8.Bh3 (better 8.gf5 ef5 9.Nf3 Ne7+-) 8...Qh4 (8...Nh6 9.gf5 Kg8 10.Bd4+-) 9.gf5 e5 (9...Ke8 10.fe6 Ne7 11.Qd3+-) 10.f6 (better 10.Qb3!? Ke8 11.Qg8 Qh5+-) 10...Bh3 11.Nh3 (11.Nf3 Qh5 12.Qb3 Be6 13.Qb7 e4 14.Qa8 ef3 15.Qb8 Qe5+-) 11...Qh3 12.Bg7! Bg7 (12...Qg2 13.Qb3 Kg6 14.Rf1 Bg7 15.Qg8 (15.fg7?! Nd7+-) 15...Kf6 16.f4+- (16.Qh7?! Nc6+-)) 13.fg7 (13.Qb3 Qe6 14.Qb7 Nf6 15.Qa8 Qd5 16.Qd5 Nd5+-) 13...Nd7?? (13...Qg2 14.Rf1 Kg7 15.d4+-) 14.Na3 (14.Qb3!? Kg7 15.Rg1 Kf6 16.Rg8 Qh2+-) 14...Ndf6? (14...Kg7 15.Rg1 Kh8 16.Qe4+-) 15.0-0-0 (better 15.Qb3!? Kg7 16.Qb7 Qc8+-) 15...Kg7 16.Rdg1 Kh8 (16...Kf8 17.Rg3 Qh5 18.Rhg1+-) 17.Rg3 (17.Qb3!? b6+-) 17...Qe6 18.Rhg1 (18.d3 Nh5 19.Rg5 h6+-) 18...a6 (18...Nh5 19.Rf3+-) 19.Qb3 Qb3 20.ab3 b5 (20...Nh5 21.Rf3+-) 21.Nc2 (21.Rg7 c5+-) 21...c5 (21...Nh5 22.Re3+-) 22.d4 Ne4 (22...Rd8 23.de5 de5 24.Rg5+-) 23.Re3 d5 (23...Nf2 24.dc5 dc5 25.Re5+-) 24.f3 cd4 25.cd4 (25.fe4?! de3 26.ed5 Nf6 27.Ne3 a5+-) 25...ed4 26.Nd4 (26.fe4?! de3 27.ed5 Nf6 28.Ne3 Re8+/-) 26...Rc8 (26...Nef6+-) 27.Kb2 Nef6 28.Re6 Ra8 29.Nc6 (better 29.Ra1!? a5+-) 29...a5 (29...Re8 30.Ne5 h5 31.Ng6 Kh7 32.Ra6+-) 30.Ne5 Ra7 31.Rd6 (31.Ra6 Re7 32.f4 a4+-) 31...a4 (31...Re7 32.f4+-) 32.ba4 ba4 33.Ka3 Re7 34.f4 Ra7 35.Rd8 h6 36.Nd7! Rd7 (36...Rd7 37.Rgg8 Double attack; 36...Nd7 37.Rdg8 Mate attack) 37.Rgg8! Kh7 (37...Ng8 38.Rd7 Deflection (38.Rd7 Overloading)) 38.Rh8 Kg7 39.Rd7 (39.Ka4?! Re7+=) 39...Nd7 40.Rd8 Nf6 41.Ka4 Kg6 42.Kb5 Kf5 (42...Ng4 43.Rg8 Kf5 44.h3+-) 43.Rd6 (43.Rf8 Ke6 44.Rf6 Kf6+-) 43...h5 (43...Ne4 44.Rd5 Kf4+-) 44.Kc6 (better 44.Rf6 Kf6 45.Kc5 Kf5 46.Kd5 Kf4+-) 44...h4 (44...Ng4 45.Rd5 Kf4 46.Rh5+-) 45.e3 (45.Rf6 Kf6 46.Kd5 Kf5+-) 45...h3 (45...Ng4 46.Rd5 Ke4 47.Rd4 Ke3 48.Rb4+-) 46.Rd5 (better 46.Rf6 Kf6 47.Kd5+-) 46...Nd5 (46...Ke4 47.Re5 Kd3+-) 47.Kd5 Kg4 48.Ke5 (better 48.Ke4!? Kh5+-) 48...Kf3 49.f5 Kg2 50.f6 Kh2 51.f7 Kg1 52.f8Q h2 53.Qg7 Kf2 54.Qh6 Kg1 55.Qh2! Kh2 56.Kf4 Kh3 57.e4 Kh4 58.e5 Kh5 59.Kf5 Kh6 60.Kf6 Kh7 (60...Kh5 61.e6 Kg4 62.Ke5 Kf3 63.e7 Kf2 64.e8Q Kg3 65.Ke4 Kf2 66.Qf7 Ke2 67.Qa2 Ke1 68.Ke3 Kd1 69.Qd2) 61.Kf7 (61.e6 Kh6 62.e7 Kh5 63.e8Q Kh4 64.Qe1 Kg4 65.Qe3 Kh4 66.Qg1 Kh3 67.Kf5 Kh4 68.Qg4) 61...Kh8 (61...Kh6 62.e6 Kg5 63.e7 Kf4 64.e8Q Kf3 65.Qe6 Kf2 66.Kg6 Kf1 67.Kf5 Kg2 68.Kf4 Kf2 69.Qa2 Ke1 70.Ke3 Kd1 71.Qd2) 62.e6 (62.e6 Kh7 63.e7 Kh6 64.e8Q Kh5 65.Qg8 Kh4 66.Kf6 Kh3 67.Kf5 Kh2 68.Ke4 Kh3 69.Kf3 Kh4 70.Qg4) 1-0. Skiadopoulos,Nikolaos (1880) - Lewandowski,Ra (2115), Titled Tue 1st Apr Early (7), 2025. — — Nikolaos Skiadopoulos is a Greek chess player born in 1954, holding the FIDE title of Candidate Master, which he earned in 2023. He is affiliated with the Greek Chess Federation and hails from Kavala, with an association to Jovan Petronic. In addition to his playing career, he has been a licensed National Arbiter since 2013. — — His current FIDE ratings include a standard rating of 1882 (inactive), a rapid rating of 1871 (active), and a blitz rating of 2022 (inactive). Skiadopoulos reached a peak Elo rating of 2285 during his career, with his Elo history showing fluctuations over the years, such as around 2340 in 1989 down to about 1890 more recently. He does not appear in active world or national rankings for standard chess, placing him at 141989 overall among all players globally and 1367 in Greece. — — Over his chess career, Skiadopoulos has played 899 recorded games, with an overall performance of about 22% wins, 8% draws, and 70% losses. His results are similar whether playing as White or Black. Among his notable achievements is a strong win against the higher-rated Martin Bitelmajer (2475) while Skiadopoulos was rated 1896, ending 1-0. On the other hand, one of his weaker losses was to Maria Tsakona (1407) when he was rated 2036, resulting in 0-1. He has struggled against certain opponents, such as Daniel E. Shapiro, against whom he has five losses with no wins or draws. — — In terms of openings, when playing as White, Skiadopoulos often favors uncommon openings, the Caro-Kann Defense, Sicilian lines, the Alapin variation of the Sicilian, and the French Advance. As Black, he commonly employs Sicilian defenses, including the B32 and B30 variations, the Benko Gambit, the Alapin Sicilian, and closed Sicilian systems. Recent games from 2024 and 2025 include losses to players like Eyal Noy (2308) in an uncommon opening and Volen Dyulgerov (2200) in a Sicilian, as well as a win against Juan Miranda Camus (2196) in a Sicilian. He remains active in online platforms like chess.com under the username stratacticos and World Chess, where he has played thousands of games with a win rate around 61% in some online contexts. — — Note created: December 2025. (AI)

4.Bh8 Kf7 5.e3 Kg6 6.Bd3 (better 6.Qg4 Kf7 7.Qg7 Ke8 8.Be2 Ne7 9.Bh5 Ng6 10.Qh7 Kf8 11.Qg7 Ke8 12.Bg6) 6...f5 (6...Kf7 7.Bh7 d5 8.Qh5 Ke7 9.Qg6+-) 7.Qg4 Kh6 (7...Qg5 8.Qb4 Kf7+-) 8.Qg7 (8.Bg7) 8...Kh5 9.Qh7 (9.Be2 Kh4 10.Qg3) 9...Kg5 (9...Nh6 10.Be2 Kg5 11.h4) 10.f4 Kg4 11.Qh3 (11.Be2) 1-0. Bostonbliz (2700) - ALEXSADERISPUSHKINO (2605), Casual bullet game, lichess.org, 2024.

4.Bh8 Kf7 5.e3 Nh6 6.Qh5 Kg8 7.Qh6 Kh8 8.Bd3 Qg8 (8...Qe7 9.a3 Bc5 10.Nc3+-) 9.Qf6 Qg7 10.Qg7 (10.Qd8!? Qg8 11.Qc7 Nc6+-) 10...Kg7 11.Nf3 h6 (11...b6 12.Nc3+-) 12.c3 (12.Nc3 Nc6+-) 12...Bd6 (12...Be7 13.c4+-) 13.h4 (13.c4 Na6+-) 13...Nc6 14.g4 (14.a4 Na5 15.Ra2 Kf6+-) 14...Ne7 (14...a6 15.Bc2+-) 15.g5 (better is 15.a4 b6+-) 15...Nf5 (15...b6 16.Be4 Rb8 17.d4+-) 16.Rg1 (16.Bf5 ef5 17.Nd4 f4 18.Nf5 Kg6 19.Nd6 cd6+-) 16...h5 17.Bf5 (17.Nd4 Ne7+-) 17...ef5 18.d4 (18.c4 b6+-) 18...c5 (18...b6 19.Ne5+-) 19.Nbd2 b5 (19...b6 20.Nc4 Bf8 21.dc5 bc5 22.0-0-0+-) 20.a4 a5 (20...b4 21.dc5 Bc5 22.cb4 Bb4 23.Rc1+-) 21.ab5 Bb7 22.Ke2 a4 (22...Bd5 23.Ra4+-) 23.Nc4 Bc7 (23...Be7 24.Nb6 Rb8 25.Nd7 Bf3 26.Kf3 Rb5 27.Ra4 cd4 28.cd4+-) 24.b6 (better is 24.dc5 Bd5 25.Nfe5 Be5 26.Ne5 Bb3+-) 24...Bb8 (24...Bd5 25.Nfe5 Be5 26.Ne5+-) 25.Nce5 (better is 25.dc5 f4+-) 25...cd4 (25...d6 26.Nd3 Ra6 27.Rgb1+-) 26.ed4 Bc8 (26...d6 27.Nd3 Ra6 28.Rgb1+-) 27.Rgb1 Bb7 28.Nd7 Bf3 29.Kf3 Bf4 30.Kf4 a3 (30...Re8 31.b7 Re4 32.Kf5 Re7 33.b8Q Rd7 34.Qe5 Kh7 35.g6 Kg8 36.Rb8 Rd8 37.Rd8) 31.b7 Ra7 (31...Rd8 32.Ra3 Kh7 33.Ra8 Rb8 34.Rb8 Kg7 35.Kf5 Kh7 36.Re1 Kg7 37.Re7) 32.Ne5 a2 (32...Kh7 33.b8Q Re7 34.Qf8 Re5 35.de5 a2 36.Ra2 Kg6 37.Qg8) 33.Rb6 Ra3 (33...Ra5 34.b8Q Re5 35.Qe5 Kf7 36.Rb7 Kg6 37.Qf5) 34.b8Q (34.b8Q Rb3 35.Rb3 Kh7 36.Rb7) 1–0. Rush,Bradley – Huseby,Juan Carlos, OP–2012–0-02198, 2012.

4.Bh8 Nh6 5.Bg7 Ng8 (5...Nf5 6.Bh8+-) 6.e3 Qe7 7.Qh5 Kd8 (7...Qf7 8.Be2 Qg6 9.a3+-) 8.Qh7 c6 (8...Qf7+-) 9.Qg8 Kc7 10.Nf3 (better is 10.Qh8 f5+-) 10...Qd6 (10...d5 11.Nh4 Bd7 12.Qh8+-) 11.Bf6 b6 12.Be5 Bd2 13.Nbd2 Qe5 14.Ne5 Ba6 15.Ba6 Na6 16.Qa8 Nb8 17.Qa7 Kc8 (17...Kd6 18.Qb8 Ke7 19.Ne4 b5 20.Qd6 Ke8 21.Qd7 Kf8 22.Qf7) 18.Qb6 d6 (18...Na6 19.Rb1 Nb4 20.Rb4 d6 21.Qb8) 19.Nc6 (19.Rb1 de5 20.Qb8 Kd7 21.Rb7) 19...Nc6 20.Qc6 Kb8 (20...Kd8 21.Rb1 Ke7 22.Rb7 Kf6 23.Ne4 Kf5 24.Rg7 d5 25.Rg5 Ke4 26.Qe6) 21.Rb1 Ka7 22.Qb7 1–0. Fournier,Frederic (1975) – vicrey(C), Active, 2005.

5.Bh8 Kf7 6.Qh5 Kf8 7.Bd3 f5 8.Be2 Nd5 9.Qh6 Ke7 10.Qg5 Ke8 11.Bh5 (11...Kf8 12.Qd8) 1–0. Kuhn,Heinz (1675) – Weinz,Andre, GER Cup Amateur GrC 1st, 2000.

5.Bh8 Ng6 6.a3 Bf8 7.Qh5+-.

5.Bh8 Ng6 6.Qh5 Qe7 7.a3 Bd6+-.

5.e3 b6 6.Qh5 Ke7 7.Qh7 Kd6 8.c3 Bc5 (8...Ba5 9.Na3 Nce7 10.Nc4 Kc6 11.Nf3+-) 9.d4 Nge7 10.Nd2 Qg8 11.Ne4 Kd5 12.c4 1–0. Plock,Joerg (2120) – Lausch,Axel (1915), remoteschach.de, 2003.

5.e3 b6 6.Qh5 Kf8 7.a3 Bd6 8.Bd3+-.

5.e3 b6 6.Qh5 Kf8 7.Nf3 Qe7+-.

5.e3 Qe7 6.c3 Bd6 7.d4+-.

5.e4 Qe7+-.

5.c3 Ba5+-.

5.e3 Nh6 6.Qh5 Nf7 7.Qh7 Nc6 (7...d5 8.Bg7+-) 8.Qg8 Qf8 9.Qf8 Kf8 10.Bf6 e5 11.Nf3 d6 12.Bc4 Nh6 13.0-0 (13.c3 Ba5+-) 13...Bg4 14.Be2 (14.a3!? Bc5+-) 14...Kf7 (14...e4 15.a3 Ba5+-) 15.Bg5 Nf5 16.c3 Bc5 17.d4 (17.h3 Bf3 18.Bf3 Kg6+-) 17...Bb6 (17...ed4 18.cd4 Bf3 19.Bf3 Nfd4 20.ed4 Bd4 21.Na3 Ba1 22.Ra1+-) 18.Nbd2 Rg8 (18...Ba5 19.Rac1 Nfe7 20.e4+-) 19.h3 (better is 19.Bc4!? Kf8 20.Bg8 Kg8+-) 19...Bf3 20.Nf3 e4 (20...Kg6 21.Bd3 d5 22.e4 de4 23.Be4 ed4 24.g4+-) 21.h4 (better is 21.Bc4 Kf8 22.Bg8 Kg8+-) 21...ef3 22.Bf3 (22.Bc4 Kg7 23.Bg8 fg2 24.Kg2 Kg8+-) 22...Nce7 (22...Rh8 23.h5+-) 23.Be7 (better is 23.g4!? Ng7 24.Bb7 Ne6+-) 23...Ke7 24.g3 Nh4 25.Bb7 Nf5 26.c4 Kd7 27.Be4 Nh6 28.a4 c6 29.d5 cd5 30.Bd5 Rg7 31.a5 Bd8 32.a6 Bf6 (32...Bb6 33.Rfb1 Kc7 34.Rb3+-) 33.Rab1 Be5 (33...Kc8 34.Kg2 Re7 35.Rb3+-) 34.Rb7 Ke8 35.Rg7 Bg7 36.Rb1 Be5 37.Rb7 Nf5 38.Ra7 Ne7 39.Ra8 Kd7 40.a7 (40.a7 Bd4 41.ed4 Nc6 42.Bc6 Kc6 43.Rd8 Kb7 44.a8Q Kb6 45.Rb8 Kc7 46.Qb7) 1–0. Fournier,Frederic (1760) – omega06 (1660), chess16.com, 2008.

5.e4 d5 6.a3 Bd6 7.Nc3+-.

5.Nf3 Nh6 6.e3 (6.a3 Bd6 7.e4 Nc6+-) 6...Nf5 (6...Qf8 7.c3 Be7 8.Bf6 Qf6+-) 7.c3 Bd6 8.Bd3 h6 (8...Qf8 9.e4+-) 9.Qc2 (9.Bf5!? ef5 10.Nh4 Qf7+-) 9...Qh7 10.Bf6 Nc6 (10...Qg6 11.Be5 Qg2 12.Rg1 Qf3 13.Be4+-) 11.Bf5 ef5 12.0-0 b6 13.d4 Bb7 14.Be5 (14.Nh4 Kf7 15.Be5 Be5 16.de5 Ke6+-) 14...Be5 15.Ne5 Ne5 16.de5 0-0-0 17.Nd2 Qg7 18.g3 Qe5 19.Qd3 h5 20.f4 Qe6 21.Nf3 Qc6 22.Rad1 h4 23.c4 (better is 23.Qf5 hg3 24.hg3 Qc3+-) 23...h3 (23...hg3 24.hg3 (24.Qf5?! gh2 25.Kh1 Qc4+-) 24...Qc5 25.Rf2+-) 24.Qd5 (better is 24.Qf5!? Qc4 25.Rd7 Rd7 26.Qd7 Kd7 27.Ne5 Ke6 28.Nc4 Bg2+-) 24...Qa4 25.Qf5 (25.Qd4 Qa2 26.Rf2 Qb3+-) 25...Qa2?? (25...Bf3 26.Rc1 Bg2+-) 26.Rf2 (26.Nd2!? Bg2 27.Rf2 Qa3+-) 26...Qc4 27.Qh3 Qc5 (27...Qe4 28.Re1+-) 28.Re1 Re8 29.Nd4 Ba6 (29...Qd5 30.Rc2+-) 30.Rc2 Qd5 31.Qg2 Qg2 32.Kg2 c6 (32...c5 33.Nf5 Kc7 34.Rd2 Bb7 35.Kf2+-) 33.Kf2 Rh8 34.h4 Rg8 (34...Bd3 35.Rc3 Be4 36.Nb5+-) 35.Rec1 (better is 35.Ra2!? Bb7 36.Ra7 c5+-) 35...Bb7 36.Nf5 c5 (36...Kc7 37.Ra1 Ra8 38.g4+-) 37.Nd6 (better is 37.Ne7 Kd8 38.Ng8 Bd5+-) 37...Kc7 38.Nb7 Kb7 39.Ra1 a5 40.Ra4 (40.Rb1!? Kc7+-) 40...d5 41.Kf3 Rd8 42.g4 Kc6 43.g5 Kb5 44.Ra1 c4 45.Rb1 Kc5 46.h5 b5 47.h6 b4 48.Ra2 1–0. Fournier,Frederic (2015) – drikeknigth (1700), Active, 2004.

4.Bh8 Bc5 5.Bf6 (better is 5.d4 Be7 6.e3+-) 5...Qf6= 6.Nf3 Qa1 7.e3 d5 8.Be2 Nc6 9.0-0 Qg7 (9...Qa2 10.d4 Bb4 11.Qd3+=) 10.g3 (10.d4!? Bd6 11.c4=) 10...e5+= 11.Nc3 e4 (11...Bh3 12.Re1 e4 13.Nh4-/+) 12.Nh4 (12.Nd5!? Bd6 13.Nh4=) 12...Be6 13.Nb5 0-0-0 14.d4 Bd6 (better is 14...Be7!? 15.Ng2 a6-/+) 15.Nd6= Rd6 16.Qb1 b6 17.Qb5 Na5 18.Qa6 Kb8 19.Qb5 Nc4 20.Qe8 Kb7 21.Bc4 dc4 22.Rb1 Qg4 23.Qb5 Qe2 24.a4 Qc2 25.a5 c3 26.a6 Kb8 27.Qe8 Bc8 28.Qb5? (28.Rf1 Qb2 29.Nf5 Re6-+) 28...Qd2 29.Nf5 (29.Qf1 c2 30.Ra1 c5-+) 29...Re6 (29...Rf6!? 30.Rf1 c2 31.g4-+) 30.d5 (30.Rf1 c2 31.Qb2 Ba6 32.Qc1-+) 30...c2 31.Rf1 (31.de6 Ba6 (31...cb1R?! 32.Qb1 fe6 33.Ne7-+; 31...cb1Q?! 32.Qb1 fe6 33.Ne7-+; 31...cb1N?! 32.ef7 Nc3 33.Qe8 Qd1 34.Kg2 Qf3 35.Kg1 Qd1 36.Kg2 Qf3 37.Kg1 Qd1=; 31...cb1B?! 32.Qb1 fe6 33.Ne7-+) 32.ef7 Bb5 33.f8Q Kb7 34.Rb5 c1Q 35.Kg2 Qdd1 36.Nd6 cd6 37.Rb6 ab6 38.Qf7 Ka6-+) 31...Rf6 32.Ne7 (32.g4 c1Q 33.Rc1 Qc1 34.Kg2-+) 32...c1Q 33.Rc1 Qf2 34.Kh1 Qf3 35.Kg1 Qe3 36.Kh1 Qf3 (36...Qc1 37.Kg2 Qd2 38.Kh1 Qe1 39.Kg2 Rf2) 37.Kg1-+ Qf2 38.Kh1 Qf3 (38...Rh6 39.Qb6 ab6 40.a7 Ka8 41.h4 Qg3 42.Nf5 Bf5 43.Rc2 Rh4 44.Rh2 Rh2) 39.Kg1 Qe3 40.Kh1 Qc1 41.Kg2 Qd2 42.Kg1 (42.Kh1 Qe1 43.Kg2 Rf2) 42...Qf2 (42...Qe1 43.Kg2 Rf2) 43.Kh1 Qf1 (43...Qe1 44.Kg2 Rf2) 44.Qf1-+ Rf1 45.Kg2 Rf6 (45...Ba6 46.Nc6 Kb7 47.Nd8 Ka8 48.Nc6-+) 46.Nc6 Ka8 47.Ne7 (47.Nb4 e3 48.g4 e2-+) 47...Bg4 (47...e3 48.Nc8 e2 49.Kh3 e1Q 50.Nd6 Qe2 51.Nf7 Qh5 52.Kg2 Qf3 53.Kh3 Rf4 54.d6 Qf1) 48.h3 (48.Ng8 Rf5 49.Nh6 Bf3 50.Kf2 Rd5 51.Nf7 c5-+) 48...Bd7 (48...e3 49.hg4 e2 50.Nf5-+) 49.g4 (49.Ng8 Rd6 50.g4 Bb5-+) 49...b5 (better is 49...e3 50.Nf5 Bf5 51.Kf3 Bg4 52.Ke3 Bh3 53.Kd4-+) 50.Ng8 Rg6 51.Ne7 Rd6 52.Kf2 Kb8 53.Ke3 c5 54.Ke4 c4 55.Kd4 Kc7 56.Kc3 Kb6 57.Kb4 (57.Kb2 b4 58.Kc1 Ka6-+) 57...Rf6 58.Nf5 (58.d6 Rd6 59.Kc3 Rd3 60.Kb2 b4 61.h4 c3 62.Kb3 Kc5 63.Kc2 Rd2 64.Kc1 Ba4 65.Kb1 Bb3 66.g5 Rd1) 58...Bf5 59.gf5 Rf5 (59...Rf5 60.Kc3 Rd5 61.Kb2 f5 62.Kc2 f4 63.Kb1 f3 64.Kc1 f2 65.h4 f1Q 66.Kb2 Rd2 67.Kc3 Qd3 68.Kb4 Qb3) 0–1. Fournier,Frederic (1970) – pedropere, Active, 2005.

4.Bh8 d5 5.Nf3 Nc6 6.e3 Qe7 7.a3 Bd6 8.Nc3 Bd7 9.Nb5 a6 10.Nd6 cd6 11.c4 dc4 12.Bc4 d5 13.Be2 1–0. Fournier,Frederic (2295) – cptnNEMO, Active, 2007.

4.Bh8 Bd6 5.Nf3 Ba3 (5...b6+-) 6.Na3 b6 7.e3 Bb7 8.Be2 Nc6 9.0-0 Qe7 10.Nc4 0-0-0 11.Bf6 Qf6 12.a4 a5 13.d4 Qg6 14.Nce5 (14.Bd3!? f5+-) 14...Ne5 15.de5 Rg8 16.g3 h5 17.Qd3 Qg7 18.c4 f6 (18...Qg4 19.Nd2 Qh3 20.Bf3 Bf3 21.Nf3+-) 19.c5! fe5 (19...bc5 20.Qb5 Double attack (20.Qb5 Decoy)) 20.cb6 cb6 (20...e4 21.Qc2 d6 22.Nd2+-) 21.Rfc1 (better is 21.Qd6 Bc6 22.Ba6 Kd8 23.Ne5 Ke8 24.Nc6 Qf8+-) 21...Kb8 (21...Kd8 22.Qd6 Bf3 23.Bf3 Qf8 24.Qb6 Ke7+-) 22.Qd6 Ka7 23.Rc7 (23.Rab1 Ka8 24.Qb6 Qg3 25.fg3 Rg3 26.hg3 Bf3 27.Qa5) 23...Rc8 24.Rac1 (24.Rc8 Qg3 25.hg3 Bc8 26.Rb1 b5 27.Rb5 Bb7 28.Qb6 Ka8 29.Qb7) 24...Rc7+- 25.Rc7 Qg4 26.Qd3 e4 27.Qa6 Kb8 28.Qb7 1–0. Fournier,Frederic (1700) – fercosan (1730), Active, 2004.

4.Bh8 Qe7 5.c3 Bc5 6.d4 Bb6 7.Qd3+-.

4.Bh8 Qe7 5.c3 Bc5 6.d4 Bb6 7.Bf6 Qf6 8.Nf3 d5 9.e3 c5 10.Nbd2 Nc6 11.Bd3 e5 12.de5 Ne5 13.Ne5 Qe5 14.Rc1 Be6 15.Bb5 Ke7 16.Nf3 Qh5 17.c4 Rg8 18.cd5 Bd5 19.e4! Ba5 (19...Be4 20.Qd7 Combination) 20.Kf1 Be6 21.h3 Rd8 22.Qe2 a6 23.Bc4 Bg4 24.Bd5 (24.hg4?! Qh1 25.Ng1 Qh6+-) 24...Kf8 (24...b6 25.Qd3+- (worse 25.hg4 Qh1 26.Ng1 Qh6+-; 25.Qa6?! Bf3 26.gf3 Qf3+-)) 25.Rc5 Bb6 26.Rc3 Bd4 (26...Ba5 27.Rd3 b5 28.Qb2+-) 27.Rd3 (27.Rc7 b5+-) 27...Bb6 (27...Bf6 28.Bb7 Rb8 29.Kg1 Bf3 30.Qf3 Qf3 31.Rf3 Rb7 32.Rf6+-) 28.Kg1 Rc8 (28...Bd7 29.Bb7 Qb5+-) 29.hg4 (29.hg4 Rc1 30.Rd1 Rd1 31.Qd1+-) 1-0. bjoernsen (2435) - IDantesI (2425), Rated blitz game, lichess.org, 2021.

4.Bh8 Qe7 5.c3 Bc5 6.d4 Bd6 7.Bf6 (7.e3 Ne4+-) 7...Qf6 8.e3 Nc6 9.Bd3 Qh6 10.Nf3 e5 (10...Be7 11.Qc2+-) 11.0-0 ed4 12.ed4 (12.Nd4?? Qh2) 12...Kd8 13.Qd2 (13.Re1 Bf4+-) 13...Bf4 14.Qb2 d5 15.Re1 Bg4 16.Nbd2 b6 17.c4 dc4 18.Bc4 f5 (18...Qf6+-) 19.d5 (better is 19.Re6 Qg7 20.Rc6 Bh3+-) 19...Ne7 (19...Ne5 20.Re5 Be5 21.Qe5 Bf3 22.Nf3 b5 23.Qh8 Ke7 24.Qa8 Kf7 25.d6 bc4 26.Qd5 Kg7 27.dc7 Qf6+-) 20.Qh8 Kd7 21.Qa8 Bd2 22.Re6 Qf4 23.Bb5 c6 24.Bc6 Nc6 (24...Kc7 25.Qb7 Kd8 26.Qd7) 25.Qc6 Kd8 26.Re8 1–0. Pommerel,Wim – Van Breda, CiF, 1989.

5.c3 Bc5 6.d4 Bf8 7.Nd2 Nc3 8.Qc2+-.

5.c4 d5+-.

5.e3 Qh8 6.Nf3 Ne4 7.c3 a5 (7...d5 8.d4 (8.cb4?! Qa1 9.Qc2 Kd8+=) Bd6 9.Bd3+-) 8.Bd3 (8.cb4?! Qa1 9.Qc2 f5+/-) 8...Nc5 (8...d5 9.Be4 (9.cb4?! Qa1 10.Qc2 ab4=) de4 10.Ng5+- (10.cb4 Qa1 11.Ng5 f5=+)) 9.Bc2 Nca6 10.0-0 (10.d4 Bd6+-) 10...Bd6 11.a4 h5 (11...Nb4 12.Bb3+- (12.cb4?! Qa1 13.b5 Qg7+/-)) 12.Na3 h4 (12...Ba3 13.Ra3 b6 14.e4+-) 13.Nb5 Nc6 (13...Bc5 14.d4 Bb6 15.Rb1+-) 14.Nd6 (14.d4 h3 15.g3 Qh5+-) 14...cd6 15.d4 b6 (15...h3 16.g3+-) 16.Be4 (16.Rb1 Rb8+-) 16...d5 17.Bd3 d6 18.Re1 Nc7 19.Bf1 (19.Rb1 Rb8+-) 19...Bd7 (19...h3 20.g3+- (worse 20.gh3 e5+-)) 20.Rb1 Rb8 21.c4 (21.h3 Qf6+-) 21...Ne8 (21...h3 22.g3 dc4 23.Bc4 Nb4+-) 22.cd5 Nb4 23.Qb3 (23.de6 fe6 24.h3 Rc8+-) 23...ed5 (23...Nd5 24.e4 Nb4 25.h3+-) 24.Nd2 Ng7 Black intends h3 25.Nf3 Ne6?? (25...Ne8 26.Rec1 Qf6+-) 26.Be2 Rg8 27.Bf1 h3?? (27...Rb8 28.h3 Qf6+-) 28.g3+- Ng5 (28...Qf6 29.Be2+-) 29.Ng5 Rg5 30.e4 (better 30.Rec1!? Qe8+-) 30...Qd4 31.ed5 Kf6 (better 31...Kf8 32.Rbd1 Qc5+-) 32.Qe3?? (better 32.Rbd1 Qc5 33.Re4+-) 32...Qd5?? (better 32...Qe3 33.fe3 Rd5=) 33.Rbd1 (33.Qe7 Kg7 34.Qd7 Rg6+-) 33...Qc5 (33...Qe5 34.Qb6 Qf5 35.Rd6 Be6+-) 34.Bh3 (better 34.Qe7 Kg7 35.Qd7+-) 34...Qe3= 35.Re2?? (better 35.Re3 Bh3 36.Rd6 Kg7 37.f4=+) 35...Bh3 (better 35...Qe2 36.Rd6 Be6-+) 36.Re3. Bostonbliz (2700) - ALEXSADERISPUSHKINO (2605), Casual bullet game, lichess.org, 2024.

6.c3 Ba3 7.Na3 1–0. Fournier,Frederic (1830) – artes, KasparovChess Playing Zone, 2002.

6.e3 Qg8 7.Qf3 Ke7 8.Qg3 Qh8 9.c3 Bd6 10.Qh4 Ke8 11.d4 Nc6 12.Nf3 b6 13.Nbd2 Be7 14.Qh6 d6 (14...Qg8 15.h4+-) 15.Bd3 Kd7 16.Qh7 (16.Qh7 Qh7 17.Bh7+-) 1–0. Van Rooijen,Peter – van Dijk,Edgar, C–2001–557 (FCV), 2001.

4.Bh8 Bc5 5.Bb2 Qf5 6.Nf3 1–0. Fournier,Frederic – bagoneta (1720), Active (5/0), 2004.

4.Bh8 Bc5 5.Nf3 Qf5 6.Bb2 b6 7.e3 Bb7 8.Be2 Nc6 9.d4 Bd6 10.Nbd2 (10.Bd3 Qg4+-) 10...0-0-0 (10...Nb4 11.Kf1+-) 11.c4 Nge7 (11...Qg6 12.Bf1+-) 12.a4 (12.c5!? bc5 13.e4 Qg6+-) 12...Na5 13.Bc3 Nec6 14.Ba5 Na5 15.Nb3 (15.Qb1!? Qb1 16.Rb1 c5+-) 15...Bf3 16.Bf3 Nc4 17.Qe2 Na5 (17...Bb4 18.Kd1 d5 19.e4+-) 18.Na5 (better is 18.g4 Qf6 19.Na5 Bb4 20.Kd1 Re8 21.Qa6 Kd8 22.Nb7 Ke7+-) 18...Qa5 19.Kf1 f5 20.g3 h5 (20...c6 21.Qc2+-) 21.Kg2 Rh8 22.h4 Bb4 23.Rhc1 d5 (23...Kd8 24.Qb2+-) 24.Qb5 Qb5 25.ab5 Kb7 26.Rc6 Rg8 (26...Bd6 27.Rc2 Kb8+-) 27.Re6 Rh8 28.Rf6 Bc3 29.Rc1 (29.Rc1 Bd2 30.Rc2+-) 1–0. Fournier,Frederic (1880) – cobralunar, Active, 2005.

4.Bh8 Nc6 5.Bc3 Bc5 6.Nf3 Qf5 7.e3 d5 8.d4 Bd6 9.Bd3 Qg4 10.0-0 Bd7 11.Ne5 Qd1 12.Rd1 Be5 (12...f5 13.Nd2+-) 13.de5 0-0-0 (13...h6 14.Nd2+-) 14.Bd4 (14.Bh7!? Nh6 15.Nd2 Ne7+-) 14...Nh6 15.Nd2 Rg8 (15...Nf5 16.Nf3+-) 16.g3 (better is 16.Bh7!? Rh8 17.Bd3 Ng4+-) 16...Ng4 17.c4 Rg5 (17...Nge5 18.Bh7 Rh8 19.cd5 ed5 20.Bb1+-) 18.cd5 ed5 19.Nf3 Rh5 20.h4 Nb4 (20...Nge5 21.Ne5 Ne5 22.Be5 Re5 23.Bh7+-) 21.Be2 Nc2 22.Rac1 Nd4 23.Nd4 (better is 23.ed4 Rf5+-) 23...c6 (23...Re5 24.Nf3 Rf5 25.Kg2+-) 24.Nb5 (24.e6 fe6 25.Bg4 Rh6+-) 24...a6 (24...Re5 25.Nd6 (worse is 25.Na7 Kb8 26.Bg4 Bg4+-) 25...Kc7 26.Nf7+-) 25.Nd6 Kc7 26.Nf7 Be6 27.Ng5 Rh6 (27...Rg5 28.hg5 Ne5 29.f4+-) 28.Ne6 Re6 29.Bg4 Re5 30.Kg2 b5 (30...Kd6 31.Rd2+-) 31.Bf3 (better is 31.f4 Re3 32.Rd5 Ra3+-) 31...a5 (31...Kb6 32.Rd4 h6 33.e4 de4 34.Re4 Re4 35.Be4+-) 32.Rd5 Rd5 33.Bd5 Kd6 34.Bc6 1–0. Fournier,Frederic (1720) – yakka, Active, 2008.

4.Bh8 d5 5.Nc3+-.

4.Bh8 Qf5 5.Bc3 Bc5 6.Nf3 h5 7.e3 Bd6 8.Bd3 c5 (8...Qc5+-) 9.Bf5 ef5 10.Nh4 Nf6 1–0. Fournier,Frederic – Ithorian,Guy, Active, 2005.

4.Bh8 Nf6 5.Nf3 Qc5 6.Bf6 (6.Bf6 Qf5 7.Bc3+-) 1–0. Bonetti,Shane – volkswagenbetle, ICC, 2002.

4.Bh8 Nf6 5.Nf3 Qf5 6.a3 Bc5 7.e3 d5 8.d4 Bb6 9.Bd3 Ne4 10.Be4 (10.Nbd2 Nd7+-) 10...de4 11.Nfd2 f6 (11...Nc6 12.Nc4+-) 12.Nc3 Ba5 13.Ne2 Qg6 (13...Kf7 14.Nf4+-) 14.Nf4 Qf7 15.Qh5 Bd2 (15...f5 16.Qf7 Kf7 17.0-0-0+-) 16.Kd2 Nd7 17.g4 (17.Ne6 Qh5 18.Ng7 Kf7 19.Nh5 b6+-) 17...Kf8 18.g5 Kg8 (18...Qh5 19.Nh5 f5 20.Rhb1+-) 19.Qf7 (19.Bf6 Qh5 20.Nh5 b6+-) 19...Kf7 20.gf6 b6 (20...Nf6 21.Rhg1 Ne8 22.Rg5+-) 21.Rhg1 Nf6 22.Rg7 Kf8 23.Rag1 e5 24.de5 Nd7 (24...Ne8 25.e6 Ng7 26.Rg7 Ke8+-) 25.Rg8 Ke7 26.R1g7 1–0. Trigance,Emile – Salinas,Marcelo, FICGS, 2012.

4.Bh8 Nf6 5.Nf3 Qg6 6.Bf6 Qf6 7.c3 Bc5 8.e3 Nc6 9.Be2 d5 10.0-0 b6 11.d4 Bd6 12.Nbd2 Bb7 13.e4 de4 14.Ne4 Qe7 15.Nd6 Qd6 16.Qd3 0-0-0 17.a4 e5 18.Qc4 (better is 18.Qf5!? Qd7 19.Qd7 Rd7 20.de5 Rd5+-) 18...ed4 19.cd4 Qg6 (19...Nd4 20.Nd4 Qd4 21.Qf7+-) 20.g3 (20.Rac1 Rd7 21.Rfd1 Na5+-) 20...Qe4 (20...Nd4 21.Nd4 Qe4+-) 21.Rfe1 (better is 21.Rac1+-) 21...Nd4+= 22.Nh4?? (better is 22.Kf1 Nf3 23.Qe4 Nd2 24.Kg2 Be4 25.f3+=) 22...Ne2 (22...Qh1) 23.Qe2 Qh1 0–1. Fournier,Frederic – CHICK197878, Partie evaluee, 1m + 2s, 2009.

4.Bh8 Nf6 5.Bf6 Qf6 6.c3 Nc6 7.e3 (< 7.cb4 Qa1 8.b5 Ne5+-) 7...Bc5 (7...d5 8.Qf3 Qf3 9.Nf3+-) 8.d4 Bb6 9.Nf3 e5 10.Nbd2 ed4 11.cd4 Nd4 (11...d5 12.Bd3+-) 12.ed4 Bd4 13.Nd4 Qd4 14.Rc1 Qe5 15.Be2 a5 (15...d5 16.Qc2+-) 16.0-0 b5 (16...Kd8+-) 17.Re1 Ra6 18.Bb5 Qe1 19.Qe1 Re6 20.Ne4 Ke7 21.Rc7 Kd8 22.Qa5 Re4 23.Rd7 (23...Ke8 24.Qd8) 1–0. Mehlhorn,Uwe – Abersfelder,Michael, remoteschach.de, 2003.

5.Nf3 Qh6 6.c3 Bc5 7.d4 Bd6 (7...Be7 8.Nbd2+-) 8.e4 Ne7 9.Nbd2 Qf8 (9...Nbc6 10.Nc4+-) 10.Bf6! Qf6 11.e5 Be5 12.Ne5 Nbc6 (12...d6 13.Ng4 Qg7 14.Qf3+-) 13.Qh5 Ng6 14.Ndf3 (14.Nc6 bc6 15.Qh7 Rb8+-) 14...d6 (14...Nce5 15.de5 Qg7 16.Bd3+-) 15.Ng4 (15.Nc6 bc6 16.Qh7 Qf7 17.Qf7 Kf7+-) 15...Qf4 (15...Qf5 16.Qf5 ef5 17.Nf6 Kf8 18.Kd2+-) 16.Bd3 Nce7 17.0-0 (17.Ng5!? e5 18.Bg6 Ng6 19.Nh7 Qf5 20.Nhf6 Kd8+-) 17...Bd7 18.Qg5 (18.h3!? 0-0-0+-) 18...0-0-0 19.Qf4 (19.Rfe1!? Rf8+-) 19...Nf4 20.Bh7 Ne2 21.Kh1 Rh8 22.Bd3 Nc3 23.Rfc1 Ncd5 24.Kg1 (24.Rab1 e5 25.Ne3 ed4 26.Nd5 Nd5 27.Nd4 b6+-) 24...e5 25.Ne3 Nf4 26.Bf1 Rg8 27.g3 (27.de5?! Nh3 28.Kh1 Nf2 29.Kg1 Nh3 30.Kh1 Nf2 31.Kg1 Nh3 32.Kh1 Nf2=) 27...e4 28.Nh4 (28.Nd2 Bc6+-) 28...Nc6 29.Rd1 Nb4 (29...Ne7 30.f3 Bc6 31.fe4 Be4 32.Rd2+-) 30.a3 Nbd3 (30...Nbd5 31.Nd5 Nd5 32.Bc4+-) 31.Bd3 (better is 31.f3!? d5 32.Nd5 Nd5 33.fe4 Ne3 34.Rd3 Nf1 35.Kf1 Bb5+-) 31...ed3 1–0. Atamer,T (1935) – Ozkahya,Emiray, Turkish Cup, 2015.

4.Bh8 Qe7 5.e4 e5 6.Qh5 Nc6 7.Qh6 f6 8.Be2 Na5 9.Bf6 Qd6 10.Bh5 1–0. pcmvr (1700) – edonaghy, net–chess.com, 2005.

4.Bh8 f6 5.c3 Bf8 6.e4+-.

4.Bh8 f6 5.Nf3 Kf7 6.Bf6! Qf6 (6...Qf6 7.c3 Combination; 6...Kf6 7.e3 Combination) 7.c3 Bc5 8.e3 Nf5 9.Be2 Nc6 10.d4 Bd6 (10...Be7 11.e4 Nh4 12.e5+-) 11.Nbd2 b6 (11...Be7 12.e4 Ng7 13.Bb5+-) 12.Ne4 Qe7 13.Nd6 Qd6 14.g3 h5 (14...Bb7 15.e4 Nfe7 16.Nd2+-) 15.Bd3 Bb7 16.Bf5 ef5 17.0-0 Ne7 18.Ne5 Kf6 19.Qh5 Ke6 (19...Kg7 20.Qf7 Kh6 21.g4 fg4 22.Ng4 Kg5 23.f3+-) 20.c4 (20.Qf7) 20...c5 (20...Rf8+-) 21.Qf7 1–0. Fournier,Frederic – solrac80, Active, 2007.

3.a3 a6 4.e4 d6 5.c4 c6 6.d3 Bb7 (6...Nf6 7.Nc3=) 7.c5 (7.Nc3 Nf6=) 7...dc5= 8.bc5 Bc5 (better 8...Nd7!? 9.d4 e5 10.de5 Nc5=+) 9.Bg7+- Bd4 10.Bh8 Bh8 11.Ra2 Bd4 (11...Nd7 12.Be2+-) 12.Nf3 Bg7 13.Be2 Qa5 14.Qd2 (14.Nbd2 c5+-) 14...Qd2 15.Nbd2 Nd7 16.Nb3 Rd8 17.d4 White plans e5 (better 17.0-0+-) 17...Nb6? (better 17...c5+=) 18.Nc5+- Bc8 19.e5 Nd5 20.Bd3 h6 21.Be4 (21.Kd2 Nge7+-) 21...Nge7 22.Rc2 f5 23.Bd5 Nd5 24.g3 Bd7 (24...Nb6 25.Ke2+-) 25.Na6 (better 25.Ke2!? a5+-) 25...Ra8+- 26.Nc5 Ra3 27.Ke2 Nc3 28.Kd2 (28.Rc3 Rc3 29.Ra1 Rc5 30.dc5 Bf8+-) 28...Nd5 29.Ke2 (29.Nh4 Bf8+-) 29...Ke7?? (29...Nc3 30.Rc3 Rc3+-) 30.Rhc1+- Kd8 (30...Be8 31.Nd2+-) 31.Nh4 (31.Nd7 Kd7 32.Rc6 Bf8+-) 31...Ne7 (31...b4 32.Nd7 Kd7 33.Rc6 Nc3 34.R1c3 bc3 35.Rd6 Ke7 36.Kd3+-) 32.Rb2 (32.Ng2 Nd5+-) 32...Nd5 33.Nb3 (33.Nb7 Ke8+-) 33...h5 (33...Bf8 34.f4+-) 34.Ng6+- Ra4 35.Ra1 (35.f4 Ke8+-) 35...Bh6 (better 35...Ra1!? 36.Na1 c5+-) 36.Ra4+- Nc3 37.Kd3 Na4 38.Ra2 Ke8 (38...Be8 39.Nf4 Bf4 40.gf4+-) 39.Nc5 Nc5 40.dc5 Kf7 41.Ra7 Kg6 (41...Ke8 42.Nh8+-) 42.Rd7 Bc1 (42...f4 43.Ke4 Bf8 44.Kd4 fg3 45.hg3+-) 43.Rd6 (43.Re7 f4 44.Ke4 fg3 45.hg3 b4+-) 43...Kf7 44.Rc6 Ba3 (44...Bb2 45.f4 h4 46.Rd6+-) 45.Rc7 (45.Rc8 Ke7 46.c6 Bd6 47.Re8 Ke8 48.ed6 f4+-) 45...Kg6 (45...Ke8 46.c6 Kd8 47.Rd7 Kc8+-) 46.c6 (46.c6 Bb2 47.Re7 Be5 48.Re6 Bf6 49.c7 Kg5 50.c8Q Bh8 51.Qg8 Bg7 52.Qg7) 1–0. petrobbo (1965) – WILRUS (2110), ChessWorld.net, 2011.

3.a3 c6 4.Nf3 d5 5.e3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 b5).

3.a3 f6 4.e4 c6 5.Nf3 e5 6.Nh4 Nh6 7.c4 g6 8.cb5 f5 9.Nf3 Bd6 10.Ne5 cb5 11.Ng4 (11...Ng4 12.Bh8+-) 1–0. Wall,Bill (2365) – MajCoffee (2335), Microsoft Gaming Zone, 1999.

3.a3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b5).

3.a4 c6 4.Ra3 Nf6 5.h4 Bb4 6.h5? Ba3-+ 7.Na3 h6 8.Qa1 ba4 9.g4 d5 10.g5 hg5 11.h6 Nbd7 12.Nf3 Rh6 13.Rg1 g4 14.Ne5 Ne5 15.Be5 Rg6 16.e3 c5 17.Nb5 Ne4?? 18.Bg7?? Qh4 19.Rg2 Bd7 20.Nc7 Ke7 21.Na8 g3 22.f3-/+ Ng5 23.f4 Nf3-+ 24.Ke2 Nh2 25.Be5? Bb5 26.d3?? Qg4 27.Kd2 Qf3 28.Qe1 Nf1 29.Kc1 Ne3 30.Re2 g2 31.Rg2 Ng2 32.Qd2 Qe3 33.Qe3 Ne3 34.Nc7 Bd7 35.Na6 Nf5 36.Nc5 Rg2 37.Na4 Ne3 38.Nc3 Rc2 39.Kb1 d4! (39...d4 40.Bd4 a5-+) 0–1. xtom – callman (1630), kurnik, 2011.

3.c3 a5 4.e3=.

3.c3 Bb7 4.Qc2 Nc6 5.Ba3 g6 6.e3 Ne5 7.Bd3?? Nd3-+ 8.Qd3 Bg2 9.h3 Bh1 10.c4 bc4 11.Qc4 Bg7 12.Nc3 Bb7 13.Qb5 Bc3 14.dc3 Rb8 15.c4 c6 16.Qa4 a6 17.Rd1 d5 18.c5 Nf6 19.b5 cb5 20.Qb4 Nd7 21.Nf3 Bc6 22.Nd4 Rc8 23.Nb5 Rg8 24.Nd6 Ke7 25.Nc8 Qc8 26.h4 Qb8 27.Qc3 Qh2 28.Qd2 Qh4 29.Bb2 Bb5 30.c6 Qh1# 0–1. soraya – ajeffries (1840), net–chess.com, 2008.

3.c3 c6 4.e4 e5 5.Qf3 Nh6 6.Bc1 c5 7.d3 g6? 8.a3 Nc6 9.Bh6 Bh6= 10.d4 c4 11.Qh3 Qg5-/+ 12.Nf3?? Qc1-+ 13.Ke2 Qb2 14.Nfd2 Bd2 15.Nd2 Qa1 16.d5 Nd4! 17.Ke3 Qc3 18.Bd3 Qd3# 0–1. Pekin Dragons – sr25sulu, ChessWorld.net, 2011.

3.c3 Ne7 4.a4 ba4 5.Ra4 Bb7 6.e3 a6 7.Nf3 h5 8.d4 Rh6 9.Bd3 Nbc6 10.0-0 Ng6 11.Nbd2 e5 (11...Be7!?+/–) 12.Bg6+- Rg6 13.d5 (13.de5?! Ne5 14.e4 Nd3+=) 13...Nb8 14.Ne5 Rg5 (14...Rg2 15.Kg2 Qg5 16.Kh1 Qe5 17.e4+-) 15.f4 Rg6? (15...Re5 16.fe5 Bd5 17.Qh5 Nc6+-) 16.Ng6 fg6 17.Qb1 c6 (17...Qf6+-) 18.Qg6 Ke7 19.d6 1–0. Wall,Bill – Tartaric, internet, 2002.

3.e3 Bb4?? 4.Bg7 f6 5.Qh5 Ke7 6.Bh8 Qe8 (6...h6 7.Qg4 Nc6 8.Bb5+-) 7.Qh7 Qf7 8.Qh4 (better is 8.Qe4 Nc6 9.Bb5 Rb8 10.Bc6 dc6+-) 8...Bb7 (8...Bd6+-) 9.Qb4 d6 (9...Ke8 10.Nc3 a6 11.Qh4+-) 10.Qb5 Bc6 11.Qa5 Kd7 12.Bb5 (better is 12.Qc3 Qg6 13.e4 Be4+-) 12...Bb5 (12...Qh7 13.Bf6! Nf6 14.Na3+-) 13.Qb5 Nc6 14.Nf3 Nh6 (14...Nge7 15.Bf6! Qf6+-) 15.Nd4 Rh8 16.Qc6 Kc8 17.Qa8 (17.Qa8 Kd7 18.Qh8+-) 1–0. GuestTQVC – GuestTUBH, freechess.org, 2017.

3.e3 d6 4.Bb5 c6 5.Be2 a6 (5...e5 6.Nf3+/–) 6.a4 (6.Nf3 Nf6+/–) 6...e5 7.b5 (7.Nf3 e4 8.Nd4 c5 9.bc5 dc5+/–) 7...Qb6 (7...Qg5!?+/–) 8.a5+- Qb7 9.b6 Nd7 10.Nf3 (10.d4 Ngf6+/–) 10...h6 (10...Rb8 11.0-0+-) 11.0-0+- Ngf6 12.d4 e4 13.Nfd2 d5 14.c4 g6 (14...Rb8 15.Nc3+-) 15.cd5 (15.Ba3 Ba3 16.Na3 Rb8+-) 15...cd5 16.Qb3 (16.Ba3 Rb8+-) 16...Be7 (16...Nb8 17.Rc1 Nc6 18.Nc3+-) 17.Ba3 (17.Rc1 Rb8+-) 17...Ba3 18.Qa3 Kd8 (18...Qb8 19.Rc1+-) 19.Rc1 Qb8 20.Rc7 1–0. DEFFM – GuestHFJJ, freechess.org, 2018.

3.e3 f6 4.Bb5 Bb4 5.Qh5 (5.Qg4 Qe7+=) 5...g6 6.Qh4 Qe7 (6...Be7 7.Nf3+=) 7.Ne2 (better is 7.Bd3+/–) 7...Qc5? (better is 7...Ba6!? 8.Nbc3 Bb5 9.Nb5 d5+=) 8.Bd3 (better is 8.Bf6 Nf6 9.Qf6+-) 8...Nc6? (better is 8...g5 9.Qh5 Ke7+/–) 9.Bg6!+- Kd8 (9...hg6 10.Qg3 Double attack (10.Qh8 Pinning; 10.Qh8 Deflection; 10.Qg3 Decoy)) 10.Bf6 Nf6 (10...Nge7 11.Qh6 Bb7+-) 11.Qf6 Ne7 (11...Qe7 12.Qh8 Qf8 13.Qf8 Bf8 14.Bh7+-) 12.Qh8 Ng8 13.Qg8 Ke7 14.Qh7 (better is 14.Qf7 Kd6 15.Be4 c6+-) 14...Kd6 15.0-0 (15.c3 Ba5+-) 15...c6 16.d4 Qg5 17.a3 Ba5 18.Nbc3 Bb7 19.Ne4 Kc7 20.Ng5 c5 21.Ne6 (21.Ne6 Kd6 22.dc5 Kc6 23.Be4 Kb5 24.Qd7 Bc6 25.Qc6 Kc4 26.Bd5) 1–0. DEFFM – GuestGkgkg, freechess.org, 2018.

3.e4 Bb4?? 4.Bg7+- Bb7 5.Bh8 Be4 6.Bb5 Bg2 7.Qg4 Bh1 8.Qg8 Bf8 9.Bg7 Qe7 10.f3 h5 11.Nc3 c6 12.Bd3 d5 13.Bf8 Qf8 14.Qf8 Kf8 15.0-0-0 Nd7 16.Ba6 Ne5 17.Be2 d4 18.f4 Nd7 19.Nf3 f5?? 20.Nd4+- Nc5 21.Rh1 h4 22.Nc6 Ke8 23.Bh5 Kd7 24.Ne5 Kd6 25.Nb5 Ke7 26.Nc6 Kf6 27.Nc7 Kg7 28.Na8 1–0. MARYMARY – The Monopoly Guy, ChessWorld.net, 2011.

3.e4 Bb7 4.a3 Nf6 (4...a5 5.f3=) 5.Bb5 Ne4 6.Qe2?? (6.Nf3 a5=) 6...f5?? (better is 6...Nc3! 7.Bc3 Bg2 8.Bg7 Bg7-+) 7.Nh3 (7.Qh5 g6 8.Qe2 Rg8+=) 7...c6 (7...Qh4 8.0-0=) 8.Qh5 g6 9.Qd1 cb5 (9...e5!? 10.Bd3 d6+=) 10.Bh8+/– Qb6 (10...Ng5!? 11.Ng5 Qg5+/–) 11.0-0+- Bd6? (better is 11...Be7+-) 12.d3 Bc7 (12...Nf2 13.Rf2 Qc7+-) 13.de4 fe4 14.Nc3 (14.Ng5 e3 15.Nh7 ef2 16.Kh1 Nc6+-) 14...Qc6 (14...d5 15.Bd4 Qd6 16.f4 ef3 17.g3 f2 18.Rf2+-) 15.Ng5 e3 16.Nge4 d5 17.Nf6 Kf7 (17...Ke7 18.a4 Bb6 19.Ng8 Kf8 20.ab5 ef2 21.Kh1 Qc8+-) 18.fe3 Na6 (18...Ke7 19.Ng8 Ke8+-) 19.Qd4 Rh8 (19...Bd6 20.Nfe4 Ke8+-) 20.Nfd5 Ke8 21.Qh8 Kd7 22.Rf7 Kd6 23.Ne4 Kd5 24.Qd4 1–0. wiking – kre, internet, 2009.

3.e4 d6 4.Nf3 e5 5.Bb5 c6 6.Ba4 Bd7 7.0-0 h6 8.Bb3 Qc8 9.d4 Bg4 10.Qd3 Be6 11.de5 Bb3 12.Qb3 Qe6 13.ed6 Qb3 14.cb3 Bd6 15.Bg7 Rh7 16.Bd4 f6 17.Re1 Re7 18.Nh4 Kf7 19.Re3 Bf4 20.Rf3 Be5 21.Nf5 Bd4 22.Nd4 a6 23.Nd2 Re5 24.Re1 Ne7 25.Nc4 Rg5 26.Nd6 Kg6 27.Ne8 Nd7 28.Nc7 Ra7 29.Nce6 Re5 30.Rg3 Rg5 31.Ng5 hg5 32.Ne6 Ne5 33.f4 Nf7 34.e5 f5 35.fg5 f4 36.Nf4 Kg7 37.Ne6 Kg6 38.Rf3 Ng5 39.Rg3 Nd5 40.Rg5 Kh7 41.Re4 Kh8 42.Nf8 Ne7 43.Rh4 Black king mated 1–0. Crusader Rabbit (1685) – Tony _ R, ChessWorld.net, 2020.

3.e4 Nf6 4.Nc3 c6 5.Be2 Be7 6.a3 0-0 7.Nf3 Bb7 8.0-0 d6 9.Bd3 Nbd7 10.Re1 Nb6 11.Ne2 e5 12.Ng3 Nc4 13.Bc3 a6 14.Bc4 bc4 15.d4 ed4 16.Qd4 d5 17.Nf5 Qc7 18.e5 Ne4 19.e6 fe6 20.Qg7 Black king mated 1–0. Crusader Rabbit (1790) – mike1745, ChessWorld.net, 2018.

3.e4 Qh4 4.Qf3 Nf6 5.e5 Qe4 (5...Nd5 6.Bb5 Qb4 7.Qb3 Qe4 8.Kf1+=) 6.Be2+= Qf3 7.Bf3 Nd5 8.Bd5 ed5 9.Nc3 c6 10.a3 d6 11.Nf3 Bf5 (11...Bg4 12.d4+=) 12.0-0-0 (better is 12.Nd4 Bg4 13.h3 de5 14.Ndb5 cb5 15.hg4+=) 12...d4?? (better is 12...de5 13.Ne5 a5+=) 13.Nd4+/– Bg4 Black fights for the Initiative 14.f3 de5 15.Nc6 (better is 15.Rhe1!? Kd7 16.Re5+- (16.fg4?! ed4 17.Ne4 d3+=)) 15...Nc6+= 16.Nb5 The passed pawn on c2 will quickly become a dangerous weapon (16.fg4 a5 17.Nb5+-) 16...Rb8= 17.Na7 The passed pawn on b4 quickly leads to threats 17...Na7 18.Be5? (better is 18.fg4!? Bd6 19.c4=) 18...Rb5-/+ 19.Rhe1 Be6 20.c4 Rb7 (20...Bc4 21.Bg7 Theme: Double Attack) 21.f4 f6 (21...Kd7 22.d3-/+) 22.Bd4 (22.Bf6 Kd7 23.Be5 Bc4 24.d3-+) 22...Kf7 23.Re3? (better is 23.d3-/+) 23...Nc6-+ 24.Bb2 Bd6 (24...Bc4 25.d3 Bd5 26.g4-+) 25.Rde1 (25.b5 Na5 26.d3 Bf4-+) 25...Re8 (better is 25...Bc4!? 26.d3 Bd5-+) 26.g3 h6 27.b5 Nd8 28.a4 g5 (28...Rbe7!? 29.d3 Ra7-+) 29.fg5 hg5 30.a5 Bc4?? (better is 30...Ra7 31.Bc3 Nb7-/+) 31.Re8+- Bb5?? (31...Ne6 32.d3 Bd5+/–) 32.Rd8 Bc7 33.Rd5 (better is 33.Ra8!? g4+-) 33...Ba5 34.Rd6 Rc7 35.Kb1 Rc6 36.Rc6 (36.Rd7 Kg6+-) 36...Bc6 37.Rf1 Be4 38.Kc1 f5 39.g4 f4 40.h4 gh4?? (40...Bd3 41.Rf3 Be2+-) 41.Rf4 (41.Rf4 Ke6 42.Re4 Kd7 43.g5+-) 1–0. Wall,Bill – Flores,Tom, Mt View CA, 1988.

3.Nf3 Bb4?? 4.Bg7+- Nf6 5.Bh8 Nc6 6.c3 Bd6 7.Bf6 Qf6 8.e3 Ne5 9.Be2 Ba6 10.d4 Ng4 11.h3 Nh6 12.a4 Qg6 13.ab5 Bb7 14.Rg1 0-0-0 (14...c6 15.Ne5 Qf6 16.bc6 dc6 17.Qb3+-) 15.Ra7 Qe4 (15...Bd5 16.Bd3 f5 17.Qa4+-) 16.Qa4 (better is 16.Bd3 Qd5 17.e4+-) 16...Nf5 (16...Qb1 17.Kd2 Qb2 18.Kd3 c6+-) 17.Bd3 Qd5 18.c4 1–0. Kappel,Ray – Holmquist,Marson, 2011 SB–1 Lechenicher SchachServer, 2011.

3.Nf3 Nc6 4.a3 Bb7 5.e3 Nf6 6.Bb5 a5 7.c3 ab4 8.ab4 Ra1 9.Ba1 Na7 10.Be2 g6 11.0-0 Bg7 12.d4 0-0 13.Nbd2 Nc8 14.c4 Nd6 15.Bc3 Nfe4 16.Ne4 Ne4 17.Bb2 Qe7 18.c5 Bd5 19.Qc2 c6 20.Ra1 Rb8 21.Bc3 Ng5? 22.Ng5+- Qg5 23.e4 Be4 24.Qe4 f5 25.Qf3 h5 26.Ra7 Bd4 27.Bd4 Rb4 28.Be3 f4 29.Bd2 Rb1 30.Bf1 Qc5 31.Ra8 (31.Ra8 Kg7 32.Qf4+-) 1–0. Fournier,Frederic (1885) – Mansard Williams, Coupe, 2006.

3.Nf3 d5 (--> 1.b4 d5 2.Bb2 e6 3.Nf3 b5).

3.Nf3 g6?? 4.Bh8+- f6 (4...Bb4 5.e4 Bb7 6.Bb5 Be4 7.Nc3 Bf3 8.Qf3+- (worse is 8.gf3 a6 9.Be2 d5+-)) 5.e4 d6 (5...Nh6 6.e5 fe5 7.Be5+-) 6.Bb5 c6 7.Be2 (better is 7.Ba4 Bd7 8.d4 Nh6+-) 7...Nh6 8.0-0 Nf7 9.Bf6! Qf6 10.c3 Bh6 11.d4 e5 12.a4 Ng5 13.Nbd2 Nd7 14.Ng5 Qg5 15.Nf3 Qg4 (15...Qf4 16.Bd3+-) 16.Ne5 Qe4 17.Bf3 Qh4 18.Nc6 Nf6 (18...Kf8 19.Qb3 Nf6 20.Nd8+-) 19.Re1 (19.Qe2 Ne4 20.Be4 Kf8+-) 19...Kf8 20.Qe2 Kg8 (20...Ne4 21.Be4 Bb7 22.Bd5+-) 21.Ne7 Kh8 22.Ba8 Bg4 23.f3 1–0. Crazy_chess – Flab, playchess.de, 2001.

3.g3 a5 4.Bg2 d5 5.e4 (5.ba5 Nf6=) 5...Bb7 (5...ab4 6.Qe2 de4 7.Be4-/+) 6.ed5 (6.ba5 de4 7.Nc3 Nf6 8.Nb5 Ra5+=) 6...Bd5-/+ (6...ed5?! 7.ba5 Ra5 8.Ne2=) 7.Bd5 (7.Nf3 ab4 8.0-0 Ra2 (worse is 8...Ba2 9.Ne5 Ra6 10.Qh5=) 9.Ra2 Ba2-/+) 7...Qd5 (7...ed5?! 8.Qe2 Qe7 9.a4 ab4 10.ab5 Ra1 11.Ba1=) 8.Nf3 f6 (better is 8...ab4!? 9.0-0 Ra2 10.Ra2 Qa2-/+) 9.Nc3= Qd7 10.Qe2 (10.a4 ab4 11.Nb5 Ne7=) 10...c6 (10...ab4 11.Nb5 c6 12.Nbd4=) 11.0-0 (11.ba5 b4 12.Na4 Ra5+=) 11...Bb4 (11...ab4 12.Nd1-/+) 12.Rfe1+= White gets the initiative 12...Ne7 (12...Kf7 13.Ne4 Qd5 14.a3+=) 13.Qe6= Qe6 (13...Na6 14.Qe2=) 14.Re6 0-0 (14...Kd7 15.Rae1=) 15.a3+= Bc3 16.Bc3 a4?? (better is 16...Nd5+=) 17.Re7+- Na6 (17...Rf7 18.Re8 Rf8 19.Re6+-) 18.Ng5 (better is 18.Nd4 Rac8+-) 18...Rfe8 19.Rae1 (better is 19.Re8!? Re8 20.Nf3 Nc7+-) 19...Re7 20.Re7 h6?? (better is 20...fg5 21.Rg7 Kf8 22.Rh7 Re8+-) 21.Ne6 c5 (21...Kh8+-) 22.Rg7 Kh8 23.Bf6 b4 (23...Rb8 24.Nf4 b4 25.Ng6) 24.Nf4 b3 25.Ng6 1–0. Robinson,E – Shull,D, Flint ch–MI class–C, 1992.

3.g3 Bb7 4.Nf3 Bf3 5.ef3 a6 (5...Bb4?? 6.Bg7 Be7 7.Bh8+-) 6.Bg2 Bb4?? (6...Nf6 7.a4=) 7.a3 (better is 7.Bg7 Be7 8.Bh8+-) 7...Bf8-/+ 8.0-0 Nf6 9.d3 Bd6 10.Nd2 c6 11.Ne4 Ne4 (11...Be7!?-/+) 12.fe4 0-0 13.Qg4 f6 14.f4 e5 15.f5 Qa5 16.Rad1? (better is 16.c3!?+=) 16...Ba3-+ 17.Ba1 Qa4 18.Rd2 Bb4 19.Re2 Bc5 20.Kh1 Bd4 21.Bd4 (21.c3 Bb6 22.Bb2-+) 21...Qd4 (21...ed4 22.e5 fe5 23.f6=) 22.Qh5 a5 23.g4 g5 (better is 23...a4-+) 24.fg6+- hg6 25.Qg6 (25.Qg6 Kh8 26.Ref2 Qa7 27.Rf5 Qg1 28.Kg1 Rf7 29.Rh5 Rh7 30.Rh7) 1–0. Salvatore – Daz101, ChessWorld.net, 2012.

4.ba5 Ra5 5.e3 c6 6.c4 bc4 7.Bc4 Nf6 8.Nf3 Be7 9.0-0 d5 10.Be2 Nbd7 11.Qc2 c5 12.Rc1 0-0 13.d3 Ra8 14.a4 Ba6 15.Na3 Qc7 16.Nb5 Qb6 17.d4 c4 18.Bc3 (better is 18.Nc3!?=) 18...Bb5-/+ 19.ab5 Qb5 20.Rcb1 Ra1 1–0. madik – irade92, gameknot.com, 2009.

4.e3 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.Bb5 Bb4 8.Nf3 0-0 9.0-0 Bb7 10.Be2 d5 11.d3 Nbd7 12.Nbd2 Bd6 13.c4 c5 14.cd5 ed5 (14...Bd5? 15.e4+-) 15.Qc2 Qb6 (15...Qe7 16.Rb1 Rb8 17.Nb3=) 16.Rb1 Qa7 (16...Qc7 17.Bc3=) 17.Bc3 Rb8 18.Ra1 Qb6 19.Rb1 Qc7 20.Ba1 Bc6 21.Nf1 h6 22.Rb8 Qb8 23.h3 Qb4 24.N1d2 Ba4 25.Qc1 Bb5 26.Bc3 Qa4 27.Kf1 Qa6 28.Qc2 Ne4 (better 28...Qa3!?=) 29.Ne4+/- (worse 29.de4 Be2 30.Kg1 Bd3-/+) 29...de4 30.Ne1 (better 30.de4!? Nb6 31.Bb5 Qb5 32.Kg1+/-) 30...ed3 31.Bd3 (31.Nd3 c4 32.Nb4 Bb4 33.Bb4 Ne5=) 31...c4 (31...Bd3 32.Qd3 Qd3 33.Nd3=) 32.Be2 (32.Bh7 Kh8=) 32...Nc5 33.Bd4 Attacking the isolated pawn on c4 33...Nd3 34.Qc3?? (34.Qb1 Bc5=) 34...Bf8 (better 34...Bb4 35.Qc2 Be1 36.Bg7 Bf2 37.Bd4-+) 35.Bf3?? (35.Qc2 Bb4 36.Nf3 Bc6=+) 35...Qg6 (better 35...Bb4 36.Qa1 Qa1 37.Ba1 Be1-+) 36.Be2?? (better 36.Nd3 Qd3 37.Be2 Qb1 38.Qe1 Qe1 39.Ke1 Bb4 40.Kd1 Ba4 41.Kc1=) 36...Bb4-+ 37.Qa1?? (better 37.Bd3 cd3 38.Qb4 d2 39.Qb5-+) 37...Ne1 (worse 37...Be1 38.Qa8 Kh7 39.Qb8-+) 38.Qb1 (38.Qa8 Kh7 39.g3-+) 38…Qb1 (38...Qb1 39.g3 Bc6 40.e4 Be4 41.f3 Nf3 42.Kg2 Ng5 43.Bf3 Bf3 44.Kf2 Qe1; 38...Qg2) 0-1. javirod1983 (2520) - anjin_san (2605), Rated bullet game, lichess.org, 2022. (=1.b4 b5 2.Bb2 e6)

4.e4 c6 5.d4 (better 5.Nf3!?=) 5...ab4-/+ 6.ab4 Ra1 7.Ba1 Bb4 8.c3 Ba5 9.Bd3 d6 10.Ne2 c5 (10...Nf6 11.0-0-/+) 11.0-0 (11.Bb5!? Bd7 12.Bd3=) 11...c4=+ 12.Bc2 Nf6 13.Na3 Bd7 14.Qd2 (14.Qb1 Qb6=+) 14...0-0 15.Rb1 Attacking the backward pawn on b5 15...e5 (15...Bc6!?=+) 16.Nb5= Bc6 (16...Qb6 17.Na3 Qc7 18.Ng3=) 17.d5 (17.Ng3 Na6+-) 17...Bb5= 18.Rb5 Nbd7 19.g3 (19.Ng3 Bb6+=) 19...Nc5 (19...Bb6!? 20.h3 Qa8=+) 20.f3 Qc7 21.Qd1 Rb8 22.Qb1 Rb5 23.Qb5 g5 (23...Nd3 A) worse 24.Bd3 Qb6 25.Nd4 cd3 (worse 25...ed4 26.Qc4 dc3 27.Kf1+-) 26.Qd3 ed4 27.cd4 Ne8-/+; B) 24.Kf1=) 24.g4 (24.Qc4 g4 25.f4 Nce4 26.Qc7 Bc7=) 24...Qb6 25.Qb6 (25.Qc4? Nce4 26.Nd4 ed4 27.Be4 d3 28.Kg2 Qb1 (28...Ne4?! 29.Qe4 Qb1 30.Qa4 Qc2 31.Qc2 dc2 32.Bb2-+) 29.Qd3 Qa1-+) 25...Bb6 26.Kf1 h5 27.h3 (27.gh5 g4 28.fg4 Ng4=) 27...hg4 (27...h4 28.Ke1=) 28.hg4 Ne8 29.Nc1 Nc7 30.Ke2 Ba5 31.Kd2 Nb5 32.Bb2 f6 (32...Kf8 33.Bd1=) 33.Na2 (better 33.Bd1=) 33...Nb3 (better 33...Nd4! 34.Bd1 Kf7=) 34.Bb3+- cb3 35.Nc1 Nd4 36.Ke3 Nc2 37.Ke2 Bb6 38.Nb3 Kf7 39.Bc1 Ke7 40.Nd2 Ne3 41.Kd3 Ng2 42.Nc4 Bc5 43.Ba3 Ba3 44.Na3 Nh4 45.Ke2 Ng6 46.Nb5 Kd7 47.Na7 Ne7 48.Kd3 Kc7 49.Nb5 Kd7 50.c4 Nc8 51.Kc3 (51.Kc2 Ne7+-) 51...Nb6 (51...Ne7 52.Kc2+-) 52.Kb4+- Ke7? (better 52...Nc8+-) 53.Nd6 Nd5 54.ed5 (54.cd5 Kd6) 54...Kd6 55.Kb5 Kc7 56.c5 (56.c5 Kd7 57.Kb6+-) 1–0. petrobbo (2035) – joynme (1975), ChessWorld.net, 2013.

4.e3 a6 5.Nf3 a5 6.ba5 (6.Bb5 ab4 7.ab4 Ra1 8.Ba1 Nf6+/–) 6...Ra5 (6...c6 7.c4+=) 7.Bc3+/– b4 8.ab4 Ra1 9.Ba1 c5 (9...Nf6 10.b5+/–) 10.bc5 Qa5 11.Be5 (11.Bd4 f6+/–) 11...Bf3 (11...Nc6 12.Bd6+/–) 12.Qf3 d6?? (better is 12...Nc6 13.Bc3 Qc5+/–) 13.Qb7+- (13.Bd6?! Bd6 14.cd6 Qb4+-) 13...Nd7 (13...de5 14.Bb5 Kd8 15.Qb8 Ke7+-) 14.Bb5 (14.Bb5 Qd8 15.Bd7 Qd7 16.c6 Qb7 17.cb7 de5 18.b8Q Ke7 19.Qe5+-) 1–0. Wall,Bill – Abusch, internet, 2001.

4.e3 a6 5.Nf3 Nf6 6.c4 bc4 7.Bc4=.

4.e3 a6 5.Nf3 h6 6.c4+= bc4 7.Bc4 d5 (7...Nf6 8.0-0+=) 8.Be2 Nf6 9.Nc3 (9.Qc2 Nbd7+=) 9...Be7 (9...c5 10.bc5 Bc5 11.0-0+=) 10.0-0 0-0 11.Na4 (11.Rc1 Nbd7+=) 11...Nbd7 12.Qc2 Nh7 (12...a5!? 13.b5 Bd6+=) 13.Rac1 Rc8 14.Ne5 Ne5 (14...Nhf6 15.Nc6 Bc6 16.Qc6+/–) 15.Be5 Bd6 (15...Qd7 16.d4+/– (16.Bc7 Bd6-/+)) 16.Nc5 Bc5 (16...Rb8!? 17.f4 a5+/–) 17.Qc5+- c6 18.Qa7 (better is 18.d4+-) 18...Qd7? (better is 18...f6 19.Qb7 fe5 20.Rc6 a5 21.Re6 Rf7+-) 19.Ba6 f6 20.Qb7 (20.Bb7?! Rf7 21.Bd6 Qb7+-) 20...Qb7 21.Bb7 fe5 22.Bc8 Rc8 23.Rc5 Nf6 (23...Ra8 24.Ra5 Rc8 25.Rc1+-) 24.Rfc1 1–0. pierred (2695) – kashikoi (2105), net–chess.com, 2008.

4.e3 Nf6 5.f3 (5.Bb5?? Bg2 6.Be2 Bh1-+) 5...a6 6.Ne2 c5 7.Be5 Nc6 8.Bf6 Qf6 (8...gf6?! 9.bc5 Bc5 10.a4=) 9.c3 cb4 10.a4 ba4 11.Ra4 bc3 12.Nbc3 Bd6 13.Ne4 Qe7 14.g3 Ne5 15.Ra3?? (better is 15.N2c3-/+) 15...Ba3 16.N2c3 (16.Nd4 Rc8 17.Nc3 Bb4-+) 16...0-0 (16...f5 17.d4 fe4 18.de5-+) 17.h4 (17.f4 Bb4 18.fe5 Bc3 19.dc3 Be4-+) 17...d5 18.Ng5 h6 19.Nh3 Nf3! 20.Qf3 d4! 21.Ne4 (21.ed4 Qf6 Double attack (21...Bf3 Discovered attack; 21...Qf6 Decoy)) 21...de3 (better is 21...f5 22.Bg2 fe4 23.Qg4 de3 24.Nf4-+) 22.Qe3 f5 23.Bg2 Be4 24.Be4 fe4 25.Nf4 Rab8 26.Ke2 (26.Qe4 Qd6 27.Rh2 Rb5-+) 26...e5 27.Ng6 (27.Ra1 Bb2 28.Ra4 ef4 29.Re4 Qe4 30.Qe4-+) 27...Qf6 (better is 27...Qb4 28.Ne7 Kh7 29.Qc3 Qb5 30.d3-+) 28.Qa3 (28.Nf8 Qf7 29.Ne6-+) 28...Qg6 29.Qb3 Rb3 30.h5 (30.d4 Rb2 31.Kd1 e3 32.de5 Qb1#) 30...Qg3 (30...Qg4 31.Ke1 Rb1#) 31.Re1 (31.Rh3 Qg4 32.Rf3 Qf3 33.Ke1 Rb1#) 31...Rf2 (31...Qf3#) 32.Kd1 Rb1 33.Kc2 Qb3# (33...Qd3#) 0–1. karlsdad – Darkseid, ChessWorld.net, 2012.

4.Nf3 Nf6 5.e3 (--> 1.b4 Nf6 2.Bb2 b5 3.e3 Bb7 4.Nf3 e6 5.a3).

4.bc5+/– Bc5?? 5.Bg7+- Nf6 6.Bh8 Bd4 7.c3 Be5 8.Nf3 Bf4 9.g3 Bh6 10.Qc2 Ke7 11.Bf6 Kf6 12.Qh7 Qf8 13.e4 Bb7 14.e5 Ke7 15.Bg2 Nc6 16.d4 Na5 17.0-0 Nc4 18.a4 ba4 19.Ra4 Bd5 20.Nh4 Bg2 21.Kg2 Nb6 22.Rb4 Nd5 23.Rb7 Bg5 24.Ng6 Kd8 25.Nf8 Kc8 26.Rd7 Ne7 27.Qf7 a5 28.Qe8# 1–0. HMBCHESS2 – windmill, Live Game Caissa's Web, 2005.

4.e4 Nf6 5.e5 Nd5 6.Bb5 cb4 7.Nf3 Nc6 8.0-0 a6 9.Bc4 Bb7 10.Bd5 ed5 11.d4 a5 12.Nbd2 Be7 13.Re1 ba3 14.Ba3 Ba3 15.Ra3 0-0 16.c4 dc4 17.Nc4 Nb4 18.Nd6 Bd5 19.Nd2 Qg5 20.N2e4 Qg6 (better is 20...Be4!? 21.Re4 Qh6+/–) 21.Rg3+- Qe6? (better is 21...Be4 22.Rg6 Bg6+-) 22.Nf6 Kh8 23.Qh5 (better is 23.Rg7 Kg7 24.Qh5+-) 23...h6?? (better is 23...gf6 24.Rh3 Qh3 25.Qh3 Rg8+-) 24.Rg7!! Kg7 25.Nf5 Qf5 26.Qf5 Rh8 27.Re3 Be6 28.Qe4 Rag8 29.d5 Nd5+- 30.Nd5 Kf8 31.Nf6 Rg4 32.Ng4 Rg8 33.Nf6 Rg5 34.Qa8 Ke7 35.Qe8 1–0. rmagas – rogeliovargas (2260), net–chess.com, 2011.

4.Ra4 a5 5.Ra5 Ra5 6.ba5 c6 (6...c5 7.Nh3+=) 7.e3 (7.Bc3 Nf6+=) 7...Qa5 8.Bd3 (8.Nf3 d6+=) 8...Nf6 (8...Ba6 9.Ba6 Na6 10.Nf3=) 9.Bf6 (9.Nf3 d5=) 9...gf6= 10.Nh3 (10.Qf3 Qa1 11.c3 Ba6=) 10...h5 (10...d5 11.Qf3 Nd7 12.0-0=) 11.0-0 (11.Qf3 Be7+=) 11...d5= 12.Nf4 Bd6 (12...h4 13.h3=) 13.Nh5+= White fights for the Initiative 13...Ke7 14.Qg4 Nd7 15.Be2 Ne5 (better 15...Ba6!?+=) 16.Qg7+- Rf8 (16...Ng6!?+-) 17.Nf6 Ba6 (17...Ng6 18.f4 Ba6 19.Ba6 Qa6 20.Nh7+-) 18.Ba6 Qa6 19.Qg5 Ng6 (19...Nd7 20.Nd5 Ke8 21.Qe7 Be7 22.Nc7 Kd8 23.Na6+-) 20.Nh7 Ke8 21.Nf8 Bf8 (21...Nf8 22.Qh5+-) 22.Nc3 Be7 23.Qg3 Qc4 (23...Kd7 24.Rb1 Bd6 25.Qh3+-) 24.Qb8 Bd8 25.Ra1 Ne5 (25...Qg4 26.Qd6 Nh4 27.Qc6 Kf8 28.Qd6 Kg7+-) 26.Ra8 (26.Ra8 Nf3 27.gf3+-) 1–0. DEFFM – GuestNDKJ, freechess.org, 2020.

4.Ra4 d5 5.e3 Bd7 6.b5 Nc6?? (better is 6...c6 7.Nc3 Nf6=) 7.bc6+- Bc6 8.Ra6 Qd7 (8...Ne7+-) 9.Nf3 Bb7 (9...f6 10.Nd4 Rb8 11.Ba3+-) 10.Ne5 Qe7 (10...Qc8 11.Bb5 Ke7 12.Bd7 Ba6 13.Bc8 Bc8 14.Nf7 Kf7 15.Qh5 Ke7 16.Ba3 Kd8 17.Bf8+-) 11.Bb5 (11.Bb5 Kd8 12.Nc6 Bc6 13.Bc6+- (13.Rc6?! Qb4 14.Ba3 Qb5 15.Bf8 Nh6 16.Bg7 Rg8 17.Bf6 Kd7+-)) 1–0. Pommerel,Wim – Bourgoyne, 1985.

4.Ra4 Nf6 5.b5 Bb7 6.Nc3=.

4.Ra4 Nf6 5.b5 Bb7 6.Nf3 a6 7.e3 ab5 (7...Be7 8.Be2=) 8.Ra8 Ba8 9.Bb5 Be4 (9...Bc6 10.Nc3=) 10.Nc3+= c6 (10...Bc6 11.0-0+=) 11.Ne4 Ne4 12.Bd3 (12.Be2 d5+=) 12...Nc5 (12...d5 13.0-0+=) 13.Be2 Ne4 (13...d5 14.0-0+=) 14.0-0 Nf6 15.Qa1 (15.Be5 d6 16.Bd4 d5+/–) 15...Be7 (15...d5 16.Rb1+=) 16.Rb1 d6 (16...0-0 17.Qa4+=) 17.Bc3 0-0 18.Ba5 (18.Rb7 Qe8+/–) 18...Qc8 19.Bc3 (better is 19.Qd4+=) 19...Ne8?? (better is 19...Qd8=) 20.Qa7+- Nc7 21.Rb7 Nb5? (21...Nd5 22.Re7 Ne7 23.Qe7+-) 22.Bb5 cb5 23.Rc7 (23.Re7 Nc6 24.Qb7 Ne7 25.Qe7+-) 23...Qd8+/– 24.g3 (24.Bg7!? Kg7 25.Re7+/–) 24...Bf6+= 25.Bb4 (25.Bf6 Qf6 26.Nd4 e5 27.Nb5 d5+/–) 25...Be7 (25...h6!?=) 26.Nd4 Na6?? (26...Re8 27.Nb5 e5 28.Nd6 Bd6 29.Rf7+-) 27.Nc6 (27.Re7 Nb4 28.Ne6 fe6 29.Rg7 Kh8 30.Rh7 Kg8 31.Qg7) 27...Qc7+= 28.Ne7 Kh8 29.Ng6?? (better is 29.Qa6 Qc2 30.Qd6 Qc1 31.Kg2+/–) 29...hg6 (29...fg6!? 30.Qa6 Qc2 31.Qb5-+) 30.Qa6 Rc8 31.c3 Qc6 32.Qc6 Rc6 33.h4 (33.f4 Ra6-+) 33...Kh7 (33...d5 34.f4-+) 34.d4 (34.d3 Ra6-+) 34...d5 35.f4 (35.Kg2 Kh6-+) 35...Kh6 (35...Rc4 36.g4-+) 36.Kf2 Kh5 37.Kf3 f6 38.Bc5 Ra6 39.Bf8 Ra2 (39...f5 40.Bc5-+) 40.Bc5 (better is 40.Bg7!? f5 41.Bf8-/+) 40...Rc2-+ 41.Bb4 g5 (41...Rc1 42.Ke2-+) 42.hg5 fg5 43.fg5 (43.g4 Kh4-+) 43...Kg5 44.Ba5 (44.Be7 Kg6 45.Bb4 Kf5-+) 44...Rc1 45.Bb4 Rf1 46.Ke2 Rf5 47.e4 (47.Bd6 Kg4 48.Kd2 g5-+) 47...de4 48.Ke3 Rf3 49.Ke4 Rg3 50.d5 (50.Ke5 Re3 51.Kd6-+) 50...Rg4 51.Ke5 ed5 (51...Rb4 52.de6 Rc4 53.e7 Rc3 54.Kd4 Rc4 55.Ke3-+) 52.Kd5 (52.Bd6 Rc4-+) 52...Rf4 (better is 52...Rb4!? 53.cb4 Kf4 54.Kc5-+) 53.Kc6 (53.Kc5 Rf5 54.Kd4 Kg4-+) 53...Rf5 54.Bc5 (54.Kd6 Kf4-+) 54...Kf4 (54...Rc5 55.Kc5 Kf4 56.Kb5-+) 55.Kb5 (55.Bd6 Ke4 56.Bc7-+) 55...g5 56.c4 g4 57.Kb4 Rc5! 58.Kc5 g3 59.Kd6 g2 60.c5 g1Q 61.c6 Qg6 (better is 61...Qd4 62.Kc7-+) 62.Kd7 Qf7 63.Kc8 (63.Kd6 Qf6 64.Kc7 Ke5-+) 63...Ke5 64.c7 Kd6 (64...Kd6 65.Kb7 Qb3 66.Ka6 Kc7 67.Ka5 Kc6 68.Ka6 Qb6) 0–1. Engles,Michael – Krmpotic,Roman, IECC, 2002.

4.Ra4 Nf6 5.b5 d6 6.e3 Bd7 7.Nf3 c6 8.c4 (8.Bf6 Qf6 9.b6 a5=) 8...cb5 9.cb5 a6 (9...Be7 10.Be2=) 10.Nc3 Be7 11.Be2 0-0 12.0-0 Qb6 13.Ra2 (13.Qa1 d5+=) 13...Rc8 14.d4 d5 15.Ne5 Qd6 (15...Bb4!? 16.Qa1 a5+=) 16.Ba3 Qb6? (better is 16...Qa3!? 17.Ra3 Ba3+/–) 17.Be7 (better is 17.Na4!? Qa5 18.Be7 Bb5 19.Bb5 ab5+-) 17...Rc3 18.Qa1 a5?? (18...Rc8 19.ba6 Qc7+-) 19.Qc3 1–0. DEFFM – goscha, freechess.org, 2018.

4.Ra4 Nf6 5.Nf3 Bb7 6.Nc3 Be7+=.

4.b5 Nf6 5.c4 c6 6.Qa4 cb5 7.cb5 Be7 (7...Bb7 8.Nc3=) 8.e3 0-0 9.Nf3 a6 10.Qc2 (10.Nc3 Bb7=) 10...Bb7 11.Nc3 ab5 12.Ra8 Ba8 13.Bb5 Nc6 14.0-0 Nb4 15.Qa4 Nbd5 (15...Qc7 16.Nd4=) 16.Ne2 h6 17.Ne5 Nb6 18.Qd4 The pressure on d7 grows 18...d5 (18...d6 19.Nc6 Bc6 20.Bc6=) 19.Rc1 (better 19.Ra1+-) 19...Nc8? (better 19...Qb8+=) 20.Nd7+- Nd6 21.Nf8 Nb5 (21...Bf8 22.Ba6 Qb8 23.Ng3+-) 22.Qa4 Nd6 23.Bf6 Bf6 24.Nd7 Be7 25.Nd4 Nc4?! (25...Bb7+-) 26.d3 Ne5 1–0. onur604 (2320) – Howdo (2105), lichess.org, 2020.

4.c4 Bb4?? 5.Bg7 Bb7 6.Bh8+-.

4.c4 Nf6 5.b5 (5.Qa4 Nc6 6.b5 Nb4=) 5...c6 (5...a6 6.Ra4 Bb7 7.Nc3=+) 6.e3 Be7 7.Nf3 0-0 8.Be2 d5 9.0-0 Bb7 10.cd5 ed5 (10...Nd5 11.Qa4 cb5 12.Qb5=) 11.Qa4 cb5 12.Qb5 Qb6 13.Nc3 Nbd7 14.Rfb1 Bc6 15.Qd3 Qc7 16.Nd4 Ne5 (16...Nc5 17.Qf5+=) 17.Qf5 Bd7 (17...Nc4 18.Nc6 Qc6 19.Nd5 Nd5 20.Rc1+-) 18.Qf4 Bd6?? (better 18...Rfe8+-) 19.Ndb5 Nc4 (19...Qc6 20.Nd6 Qd6 21.Nb5 Bb5 22.Be5 (22.Bb5?! Nc4 23.Qd6 Nd6+-) 22...Qe5 23.Qe5 (23.Bb5 Qf4 24.ef4 Rfb8=+) 23...Be2 24.Rb7+-) 20.Nc7 Bf4 21.Na8 Nb2 22.ef4 Ra8 (22...d4 23.Nd1 (worse 23.Rb2 dc3 24.dc3 Ra8+-; worse 23.Ra7 dc3 24.dc3 Na4+-) 23...d3 24.Bf1+-) 23.Rb2 1–0. onur604 (2320) – owl77 (1995), lichess.org, 2020.

4.e3 Bb4?? 5.Bg7 Nf6 6.Bh8+-.

4.e3 Bb7 5.b5 (5.Ra4 Nf6=) 5...c6 (5...a6!? 6.Ra4 ab5 7.Ra8 Ba8-/+) 6.Nf3 Qb6 7.c4 (7.Nc3 cb5 8.Bb5 Na6+=) 7...cb5 (7...a6 8.bc6 Nc6 9.Nc3=) 8.cb5 a6 9.Bd4 Bc5?? (better is 9...Qd6+=) 10.Bg7+- ab5 11.Bh8 f6 (11...Ne7 12.Nc3+-) 12.Nd4! Bd4 13.Qh5 Kf8 (13...Kd8 14.ed4 Qd4+-) 14.Qh7 (better is 14.ed4 Qd4 15.Nc3+-) 14...Ba1+= 15.Qg7 Ke8 16.Qg8 Ke7 17.Nc3 b4?? (better is 17...Bc3 18.Qg7 Kd6 19.dc3 a3 20.Qf8 Kc7 21.Bf6 a2 22.Bd8 Kc6 23.Bb6 a1Q 24.Ke2 Qb2 25.Kf3 Kb6 26.Kg3 Qc3 27.Qd8 Ka7-+) 18.Qh7 (better is 18.Bf6!? Kd6 19.Qg3 Kc6 20.Bb5 Qb5 21.Nb5 Kb5 22.Ba1 a3+-) 18...Kd6 (18...Kd8 19.Bf6 Kc7+-) 19.Ne4 (better is 19.Nb5 Qb5 20.Bb5 Bg2 21.Rg1+-) 19...Kc7 (19...Be4 20.Qe4 Nc6 21.Qd3 Kc7 22.Qb1-/+) 20.Be2 (20.Nf6 Qc5 21.Qb1 Bf6 22.Bf6 Qf5+=) 20...b3 (20...Qc6 21.f3 Qc1 22.Bd1 Be4 23.Qe4 Nc6-+) 21.0-0 (worse is 21.Bf6 Be4 22.Qe4 Bf6 23.Qa8 b2-/+) 21...b2 (21...Qc6 22.f3 Qc2 23.Ra1 b2+=) 22.Nf6+- b1Q?? (better is 22...Ba6 23.Ne8 Kc8 24.Ba6 Qa6+-) 23.Rb1 (23.Qb1?! Qb1 24.Rb1 Bf6 25.Bf6 a3+-) 23...Bb2 (23...Qb1 24.Qb1 Bf6 25.Bf6+-) 24.Qc2 (24.Rb2 Qc6 25.Ne8 Kc8+-) 24...Bc6 (24...Qc6 25.Rb2 Qc2 26.Rc2 Nc6+-) 25.Rb2 Qa5 26.Ne8 Kd8 (26...Kc8 27.Rb5 Qa7 28.Nd6 Kc7 29.Be5+-) 27.Nd6 (better is 27.Bf6 Kc8 28.Nd6 Kc7+-) 27...Ke7 28.Ne4 (28.Rb5 Qb5 29.Nb5 Kd8 30.Qc5 Kc8 31.Nd6 Kd8 32.Qb6 Ke7 33.Nc8 Kf7 34.Qd8 Kg6 35.Qf6 Kh7 36.Qg7) 28...a3 29.Bf6 (29.Bf6 Kf8 30.Rb5+-) 1–0. GuestFYYM – GuestHRPF, freechess.org, 2018.

4.e3 Nf6 5.b5 (5.Ra4 Bb7=) 5...c5 (5...a6 6.Ra4 Bb7 7.Nf3=) 6.c4 (6.Ra4 d5=) 6...Bb7 7.Nf3 Qb6 (7...a6 8.Ra4 ab5 9.Ra8 Ba8 10.cb5=) 8.Be2 (8.Nc3 a6=) 8...d5 (8...a6 9.Qa4 Be7 10.Nc3=) 9.0-0 (9.Bf6 gf6 10.cd5 Bd5+=) 9...dc4 (9...a6 10.Bf6 gf6 11.ba6 Qa6 12.cd5+=) 10.Bc4 (10.Bf6 gf6 11.Na3 Nd7+=) 10...Nbd7 (10...a6 11.Nc3=) 11.Nc3 (11.d3 a6 12.ba6 Ba6 13.Ra4 Qb2 14.Ba6 Be7+=) 11...Rd8 (11...Bd6 12.d3=) 12.Na4 (12.d3 Bd6+=) 12...Qc7 13.Nc3 (13.d3 Bd6 14.e4 0-0+=) 13...Nb6 (13...Bd6 14.g3=) 14.Be2+= Bd6 15.Ra7 Qb8 16.Qa1 Bf3 (better is 16...Rd7!? 17.Ra5 c4+=) 17.Bf3+- Bh2 18.Kh1 Be5? (18...Nbd7 19.g3 Bg3 20.Ra8+-) 19.Bc6?? (19.Rb7 Qc8 20.Rb6 Rd2+-) 19...Nfd7?? (19...Nbd7!?+-) 20.f4 (20.Rb7 Qc8 21.Ne4 0-0 22.Be5 Ne5 23.Qe5 Nc4+-) 20...Bf6? (20...Bc7 21.Ne4 0-0 22.Bg7 Rfe8+-) 21.Qa3 (better is 21.Rb7 Qd6 22.Ne4+-) 21...0-0+/– 22.Ne4 Attacks the isolani on c5 (22.d3!?+/–) 22...Bb2= 23.Qb2?? (better is 23.Qa2 Nf6 24.Rb7=) 23...Qa7-+ 24.Ra1 Qc7 25.Qb3 (25.Qa2 Rc8-+) 25...Nb8 (better is 25...e5 26.f5-+) 26.Ng5 (26.Qa3 Nc6 27.Qc5 f5-+) 26...Nc6 (better is 26...h6 27.Nf3 Nc6 28.bc6-+) 27.Ne6 (27.Qc2 f5 28.Qc5 Rd6-+) 27...fe6 28.Qe6 Kh8 (28...Rf7 29.Qc6 Qc6 30.bc6-+) 29.bc6 (29.Qc6 Qc6 30.bc6 Rd2-+) 29...Rf6 (29...Rf6 30.Qe4 Qc6 31.Qc6 Rc6-+) 0–1. GuestYPXH – GuestNFSF, freechess.org, 2018.

4.a3 Bb7 5.f4 (5.Nf3 Nf6=) 5...Nf6 6.Nf3 c5 7.c3 (7.bc5 Bc5 8.c4 bc4 9.Bc4 d5=) 7...c4 8.Be2 Bd6 (8...Be7 9.d3=) 9.0-0 (9.d3 cd3 10.Bd3 Nd5=) 9...Qb6 10.Nd4 0-0 11.d3 cd3 12.Bd3 Be4 13.Be4 Ne4 14.Qh5 (14.Qd3 f5=) 14...Nf6 (14...Be7!?+=) 15.Qf3= Nc6 16.Nd2 (16.c4 bc4 17.Nc6 Qc6 18.Qc6 dc6 19.Bf6 gf6+=) 16...Be7 (16...a5 17.Qg3=) 17.c4 bc4 (17...d5 18.Rac1 Rac8 19.cd5 Nd5 20.Ne4+=) 18.Nc4+= Qd8 (18...Nd4!? 19.Bd4 Qd8+=) 19.Nc6+/– dc6 20.Qc6 Qd5 21.Qd5 Nd5 (21...ed5 22.Nb6 Rab8 23.Bd4+/–) 22.Rac1 (22.e4 Nf6 23.Bf6 Bf6+-) 22...Nf6 23.Ne5 Rac8 (23...Rfc8 24.Nc6 Kf8 25.Rfe1+/–) 24.Nc6 Bd8 25.Rfd1 Nd5 26.Kf2 Bf6?? (26...Ne7 27.Rd8 Rc6 28.Rc6 Rd8 29.Ra6 f6+-) 27.Bf6 Nf6 (27...gf6 28.e4 Nb6 29.Ne7 Kg7 30.Nc8 Rc8 31.Rc8 Nc8+-) 28.Ne7 (28.Ne7 Kh8 29.Rc8 Rc8 30.Nc8+-) 1–0. Wall,Bill – Captive, internet, 2005.

4.c4 Bb7 5.Nf3=.

4.c4 c6 5.Nf3 Nf6 (5...Bb4 6.Bg7 Bd2 7.Nbd2+-) 6.a3 d6 7.Nc3 Be7 8.Qc2 (8.a4 bc4 9.Bc4 d5+=) 8...h6 (8...0-0 9.a4=) 9.Nd4 (9.a4 ba4 10.Ra4 c5+=) 9...Bb7 (9...e5 10.Nf5 Bf5 11.Qf5=) 10.cb5 (10.a4 c5 11.bc5 dc5 12.Ne6 fe6 13.Qg6 Kf8 14.cb5 Nbd7+=) 10...cb5 (10...ab5 11.a4=) 11.Bd3 (11.a4 e5 12.Nf5 0-0+=) 11...Nbd7 (11...e5 12.Nf5 0-0 13.Ne7 Qe7 14.0-0=) 12.f4 (12.0-0 e5 13.Nf5 0-0=) 12...Rc8 13.0-0 White prepares the advance f5 13...0-0 (13...e5 14.Nf5 e4 15.Be2+=) 14.Qb3 (14.a4 ba4 15.Qa4 Nb6+=) 14...Nb6 15.f5 (15.e4!?=) 15...e5-/+ Black is in command 16.Nde2 Qd7 17.Ng3 Nc4 18.Rf2 (18.Bc4 Rc4 19.d3 Qc6+=) 18...d5 19.Bc4 dc4 20.Qc2 Qc6 (20...Qd3 21.Qd3 cd3 22.e4-/+) 21.h3 (21.e4 Qb6 22.Rc1 Ng4-+) 21...Bd6 22.Nce2 (22.e4 Qb6-/+) 22...Qc7 (22...Rfd8 23.Nc3-/+) 23.e4 Qc6 24.Nc3 Bb8 (24...Qb6 25.Rc1-/+) 25.Kh2 Rcd8 26.Raf1 (26.a4 Bd6 27.ab5 ab5-/+) 26...Rd3 27.Rf3 Rfd8 28.R1f2 (28.Rd3 Rd3 29.Rc1 Qd6-/+) 28...Ba7-+ 29.Re2 Qb6 (29...Qd6 30.Nf1-+) 30.Qd1 (30.Rf1 Qd6-+) 30...Qd6 31.Nd5 (31.Rd3 Qd3 32.Qb1 Qd6-/+) 31...Nd5 32.ed5 Rd5 33.Ne4 Qb6 (33...Qd7 34.f6-+) 34.Nc5 Bb8 35.Ne4 (35.Rfe3 Re8-+) 35...f6 (35...Rd3 36.Rd3 Rd3 37.Nc5 e4 38.Kh1-+) 36.Rg3 Rd3 (36...Ba7 37.Nc5-+) 37.Bc3 (37.Rd3 Rd3 (worse is 37...cd3 38.Re3-+) 38.Nc5 Rd5-/+) 37...Rg3-+ 38.Kg3 Rd3 39.Kh2 Be4 (39...Bd6 40.Qc2-+) 40.Re4 Qd8 (40...Ba7 41.Qe1-+) 41.Qg1 (41.Qg4 Ba7-+) 41...Qd5 42.Rg4? (better is 42.Qe1-+) 42...e4 43.Kh1 e3! 44.de3?? A deflection (44.Qe3 Re3) 44...Rc3-+ 45.Rd4 Qe5 (45...Qe5 46.Rd7 Kh7-+) 0–1. Dillimann,Hans_Peter – Kienle,Paul, Afro op Germany, 1994.

4.Be2 Bb4?? 5.Bg7 Bb7 6.Bh8+-.

4.Be2 Bb7 5.Nf3 Bb4 6.Bg7 Bf3 7.gf3 Qg5 8.Bh8 Qg2+-.

4.Be2 Bb7 5.Nf3 Bb4 6.Bg7 Bf3 7.Bf3+-.

4.Be2 Bb7 5.Nf3 Bb4 6.Bg7 Bf3 7.Bh8?! Be2 8.Qe2 Nf6+-.

4.Be2 Bb7 5.Nf3 Nf6=.

4.Nf3 Bb4?? 5.Bg7+- Nc6 6.Bh8 f6 (6...Bb7 7.a4 ba4 8.c3+-) 7.Nh4 (7.a4 ba4 8.c3 Bc5+-) 7...Qe7 8.Qh5 Kd8 9.Bd3 (9.a4 ba4 10.c3 Bc5+-) 9...f5 10.Nc3 (10.c3 Bc5+-) 10...d5 (10...Nf6 11.Qh6 Ng4 12.Nf5 ef5 13.Qh5+-) 11.f4 (11.a4 ba4 12.Ra4 Nf6 13.Bf6 Qf6+-) 11...Bd7 (11...Nf6 12.Bf6 Qf6 13.Qh7+-) 12.Qg5 (12.a4!? Be8 13.Qg5 Qg5 14.fg5 ba4+-) 12...Qg5 13.fg5 Kc8 (13...Nce7 14.g4 c5 15.gf5 ef5 16.Rf1+-) 14.0-0 Kb7 (14...Nge7 15.Rab1+-) 15.Nf3 (15.Rab1 Nge7 16.Bf6 Bc3 17.Bc3 Rg8+-) 15...Nge7 16.Ne5 (16.Bf6 Bc3 17.Bc3 Rg8+-) 16...Be8 (16...Rh8 17.Nd7 Rd8 18.Nf6+-) 17.Bf6 (17.Nf3 Bd7 18.Bf6 Bc3 19.Bc3 Rg8+-) 17...Bd6 (17...Bc3 18.dc3 Ne5 19.Be5+-) 18.Nc6 (18.Nf3 Nb4+-) 18...Bc6 19.Be7 (19.Be2 Rg8+-) 19...Be7 20.h4 Rg8 (20...b4 21.Rab1+-) 21.Ne2 (21.g4 b4 22.Ne2 fg4+-) 21...h6 (21...Bb4 22.c3 Bd6 23.g4+-) 22.Nf4 (22.gh6 Rh8+-) 22...hg5 (22...e5 23.Ne6 hg5 24.hg5+- (24.Rf5 gh4 25.Re5 Bf6+/–)) 23.hg5 (23.Ne6 gh4 24.Bf5 Bd6+-) 23...Bd7 24.g6 c6 (24...Bd6 25.a4+-) 25.Rf3 (25.a4 Bd6+-) 25...e5 (25...Bd6 26.Rh3+-) 26.Bf5 (26.Nh3 e4 27.Be4 de4+/–) 26...Bf5 27.Nd5! cd5 28.Rf5 Rg6 29.Rf7 Re6 30.Raf1 Kb6 31.R1f5 d4 (31...b4 32.g4+-) 32.e4 Kc5 33.g4 Kc4 34.Rf3 (34.g5 Bb4 35.d3 Kc3+-) 34...b4 (34...Bg5 35.c3 Rc6+-) 35.g5?? (better is 35.Kf2+-) 35...Bg5+/– 36.Rc7 Kb5 37.d3 (37.Rf2 Rg6 38.Rb7 Kc6=) 37...Bf4 (37...Be3 38.Kf1+/–) 38.Kf1 (38.Rf7 Rh6+/–) 38...Rh6 39.Rf4?? (better is 39.Rb7 Kc5 40.Rg7+/–) 39...ef4-/+ 40.Rf7 Rh2 (40...Rh1 41.Kg2 Rh4 42.Kf3=) 41.e5 (better is 41.Rf4!? Rc2 42.Rf2 Rc1 43.Ke2+=) 41...Rc2-/+ 42.e6 (42.Rf4 Kc5 43.Rf2 Rf2 44.Kf2-+) 42...Rc1?? (42...Ra2 43.Rf4 Kc5 44.e7 Ra1 45.Ke2 Ra2 46.Kf3+-) 43.Ke2-/+ Rc6?? (43...Ra1 44.Kf3 Kc6= (44...Ra2 45.e7 Rf2 46.Kf2+-)) 44.e7+= Re6 45.Kf3 Kc5 46.Kf4 Kd6 47.Kf5 Re5 48.Kf4 Re6 (48...Re3 49.a3+=) 49.Kf3 (49.Kf5 Re7 50.Rf6 Kc5 51.Ra6 Re3-+) 49...a5 (49...Re3 50.Kf4-/+) 50.Kf4? (better is 50.Rf4!?+=) 50...a4-/+ 51.e8Q Re8 52.Ra7 a3 53.Rb7 Kc5 (53...Re3 54.Rb4 Rd3 55.Ke4 Re3 56.Kd4-+) 54.Rc7-/+ Kd5 (better is 54...Kb5!?-/+) 55.Rc4? (better is 55.Rd7 Ke6 56.Rd4+=) 55...Rb8 (55...Rb8 56.Kf5 b3-+) 0–1. Dopper,Johan – van Dalsen,Jan, 1994.

4.Nf3 c6 5.c4 bc4 6.Bc4 d5 7.Bb3 a5 (7...Bb4?? 8.Bg7 Nf6 9.Bh8+-) 8.ba5 Qa5 9.0-0 Bd7 (9...Nf6 10.Qc2=) 10.Bc3 Qd8 11.Qe2 (11.Ne5 Nf6+=) 11...Nf6= 12.d3 Be7 13.Nbd2 Na6 14.Kh1 Nc5 15.Qd1 (better 15.Bc2!?+=) 15…Nd3-/+ (15...Nd3 16.a3 c5-/+ (worse 16...Ra3 17.Bf6 gf6 18.Ra3 Ba3 19.Nb1+=)) 0–1. aravind555 (1675) – lfs000 (1655), lichess.org, 2020.

4.Nf3 Nf6 5.a3 c5 6.bc5 Bc5 7.d4 Bb6 8.Bd3 Bb7 9.0-0 Qc7 10.Nbd2 d5 11.c3 Nc6 12.e4 (12.a4 Na7+=) 12...de4= 13.Ne4 Nd5 14.Qd2 (14.a4!?+=) 14...Na5 15.Qg5 f6 16.Qh5 g6 17.Qh4 0-0-0 (better is 17...0-0=) 18.Nfd2?? (better is 18.Nf6 Nb3 19.Rae1 Nc3 20.d5 Bd5 21.Nd5 Rd5 22.Qf6+-) 18...Nf4 19.Qg3 f5 (19...Nd3?! 20.Qd3 f5 21.Ng3=) 20.Ng5 h6 (better is 20...Qc6 21.Rae1 Bc7-+) 21.Nh3+= Ng2 22.c4?? (better is 22.a4 Nc4 23.Qc7 Kc7 24.Bc4 bc4 25.Nc4+=) 22...Bd4-+ (22...bc4 23.Nc4 Nc4 24.Bc4 Qg3 A) 25.fg3? e5-+ (25...Bd4?! 26.Bd4 Rd4 27.Be6 Kb8 28.Bf7-/+); B) 25.hg3=; 22...Nc4 23.Nc4 bc4 24.Bc4 Qg3 A) 25.fg3? e5-+ (25...Bd4?! 26.Bd4 Rd4 27.Be6 Kb8 28.Bf7-/+); B) 25.hg3 Bd4 26.Bd4 Rd4 27.Be6 Kb8 28.Rfb1=) 23.Bd4 Rd4 24.f4 Rhd8 (worse is 24...bc4 25.Be4 Rd2 26.Bb7 Qb7 27.Rf2 Rf2 28.Nf2-+; 24...Nc4?! 25.Bc4 Rd2 26.Be6 Kb8 27.Bb3-+) 25.Nf2 (25.Nf3 Rd3 26.Kg2 Nc4 27.Qg6-+) 25...Nf4 26.cb5 (26.Qe3 bc4 27.Nc4 Nc4 28.Bc4 Rc4 29.Rfe1-+) 26...Rd3 27.Nd3 Ne2 (27...Qb6 28.Rf2 Ne2 29.Kf1 Ng3 30.hg3 Qb5 31.Rc1 Kb8 32.Kg1 Rd3 33.Nf1-+) 28.Kf2 Qg3 (better is 28...Ng3 29.Rac1 Nf1 30.Rc7 Kc7 31.Nf1 Rd3-+) 29.hg3 Rd3 30.Ke2 Rg3 31.Rac1 Kd7 32.Rfd1 Ke7 33.Kf2 (better is 33.a4 Rg2 34.Ke1-+) 33...Rg2 (33...Ra3 34.Ra1 Ra1 35.Ra1 ab5 36.Ra5+=) 34.Kf1 Rg4 (better is 34...ab5 35.Rc7 Kf6 36.Rb7 Rd2 (36...Nb7?! 37.Kg2 Nd6 38.Nb1=) 37.Rd2 Nb7-+) 35.Rc7 Kf6 36.b6 Ra4 (36...Rg3 37.a4 Rg4 38.Ra1-+) 37.Nb1 h5 38.Rdd7 Bc6 39.Rd6 Rc4 (39...Bd5 40.Rd8-+) 40.Kf2 (40.Nd2!? Rf4 41.Kg1-+) 40...h4 41.Nd2 Rc3?? (41...Rc2 42.b7 Rb2-+ (42...Nb7?! 43.Rcc6 Nd6 44.Rc2=)) 42.b7+= Nb7 43.Rdc6 Rc6 44.Rc6 a5 45.Rb6 (45.Nc4 g5=) 45...Nc5= 46.Rb5 Nd3 47.Ke3 Ne5 48.Ra5 g5 49.Kf2 g4 50.Rb5 Nd3 51.Ke3 Ne5 52.a4 g3 (52...h3 53.Kf2 Nd3 54.Kg3=) 53.a5 (53.Rb1 Kg5+=) 53...h3+/– 54.Re5?? (54.Rb1 h2 55.Nf3 Nc4 56.Kf4+-) 54...Ke5 (better is 54...h2 55.Ne4 Ke5 56.Ng3 f4 57.Kf2 fg3 58.Kg2 Kd5-+) 55.a6 (55.Kf3 h2 56.Kg2 Kd5-+) 55...h2 56.a7 h1Q (better is 56...g2 57.Nf3 Kd6-+) 57.Nf3-/+ Kd6 58.a8Q Qc1 59.Ke2? (better is 59.Kd3!? Qb1 60.Kc3-/+) 59...Qc4-+ 60.Kd1? (60.Ke1 Qe4 61.Qe4 fe4 62.Ng1+=) 60...Qd5 61.Qd5 Kd5 (61...ed5 62.Ke2 Ke6 63.Ke3-/+) 62.Ke2 (62.Ng5 f4 63.Ke2 Ke5-+) 62...e5 (62...f4 63.Ng5-+) 63.Nh4 (63.Ng5 Kd4-+) 63...Ke4 64.Ng2 f4 65.Ne1 (65.Nh4 Kd5 66.Kf3 Kd4-+) 65...Kf5 66.Nf3 e4 67.Nd2 (67.Ne1-+) 67...e3 (67...g2 68.Ne4 Ke4 69.Kf2 f3 70.Kg3 g1Q 71.Kh3 Kf4 72.Kh4 Qg4) 68.Nf3 Ke4?? (68...g2 69.Nh4 Ke4-+) 69.Ng5-/+ Kd4 (69...Ke5 70.Nh3 Kf5=) 70.Nf3?? (70.Kf3 Ke5=) 70...Kc3 (70...Kd5 71.Kd3 g2-+) 71.Ne1= Kd4 72.Nf3 Kc4 (72...Kd5 73.Kd3 g2 74.Ke2-+) 73.Ne5?? (better is 73.Ne1!?=) 73...Kd5?? (73...Kc3 74.Nf3 g2-/+) 74.Nf3 g2 75.Ke1? (75.Ng1 Ke4 76.Nf3 g1N 77.Ng1 Kd4=) 75...Ke4 (better is 75...Kc4 76.Kd1 Kc3-+) 76.Ke2= Kd5 77.Ke1 Ke6 (77...Kc4 78.Ke2 Kc3 79.Ng1+=) 78.Ke2 Kf6?? (78...Kd6 79.Ng1 Ke5+=) 79.Ng1= Kf5 80.Kf3 Ke5 81.Kg2 Ke4 82.Ne2 (82.Nh3 f3 83.Kg3 e2 84.Ng5 Ke3 85.Nf3 Kd3=) 82...f3 83.Kf1 Kd3 84.Ng1 Ke4 85.Nh3 (85.Ne2 f2=) 85...e2 (better is 85...Kf5!?-/+) 86.Ke1 Ke3 87.Nf2 Kf4 88.Nd3 Kg3 89.Nf2 Kg2 90.Nd3 Kg3 91.Nf2 Kf4 92.Nd3 Ke4 93.Nf2 Ke3 94.Ng4 ½–½. Franco Rincon,D (1670) – Enfedaque Jimenez,JC, Championship de Madrid Individual Absol, 2013.

4.Nf3 Nf6 5.a4 Bb4=.

(--> 1.b4 b5 2.Bb2 Bb7 3.e3 e6).

4.Nf3 a6 (--> 1.b4 b5 2.Bb2 Bb7 3.e3 a6 4.Nf3 e6).

4.Nf3 Nf6 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6).

4.a4 a5 5.ab5+/– cb5 6.Bb5 (6.Qf3 Nc6+/–) 6...Bb7+= 7.Nf3 ab4 8.Ra8 Ba8 9.c3 (9.0-0 Qb6 10.c4 bc3 11.Nc3 Nf6+=) 9...bc3 (9...Qf6 10.Be2+=) 10.Nc3 Bc6 11.Be2 (11.0-0 Nf6+=) 11...Nf6 12.0-0 Be7 13.d4 (13.Qc2 0-0+=) 13...0-0 (13...Bf3 14.Bf3 d5 15.Qa4 Nbd7 16.Rb1=) 14.Qc2 (14.Ne5 d5+=) 14...g6 (14...Qc7 15.Rc1=) 15.Ne5+= Bd5 (15...d6 16.Nc6 Nc6 17.Rb1+=) 16.e4 (better is 16.Rc1+/–) 16...Be4? (better is 16...Bb7+=) 17.Ne4+- Ne4 (17...d6 18.Nf6 Bf6 19.Ng4+-) 18.Qe4 d5 (18...d6 19.Ng4+-) 19.Qc2 (19.Qe3 Bd6+-) 19...Bd6 20.Rc1 Be5 (20...Qh4 21.Ra1+-) 21.de5 Qb6 (21...Qg5 22.Qc7 Qd2 23.Ba3 Qe2 24.Bf8 Kf8 25.Qb8 Kg7 26.h4+-) 22.Ba3 Re8 23.Bd6 (23.Qa4 Rd8 24.Be7 Nd7+-) 23...Qd8 (23...Nd7+-) 24.Qc7 Qc7 (24...Kg7 25.Qb7 Qg5 26.Rb1+- (26.Bb8 Qc1 27.Bf1 d4-/+)) 25.Rc7 Rd8 (25...Kg7 26.Bb5 Rg8 27.Kf1+-) 26.g3 Nd7 (26...f5 27.Kf1 d4 28.Bc4+-) 27.Be7 Ne5 (27...Ra8 28.Rd7 Rb8 29.f4+-) 28.Bd8 Kg7 1–0. GuestKCMN – GuestTFPY, freechess.org, 2016.

4.a4 Bb7!?+=.

4.Nf3 Bb4?? 5.Bg7+- Qa5 6.Bh8 Bd2 (6...Be7+-) 7.Nbd2 f6 (7...d6 8.Ng5 h6 9.Nge4+-) 8.Nd4 Ba6 (8...b4 9.Bd3 h6+-) 9.Qh5 Kd8 10.Qh7 Ne7 11.Bf6 Kc7 12.Qe7 Bc8 13.Ne6 Kb6 (13...Kb7 14.Nc5 Kb6 15.Qd8 Kc5 16.Be7 Kd5 17.Qg8 Ke5 18.f4 Kf5 19.g4) 14.Qd8 Ka6 (14...Kb7 15.Nc5) 15.Nc5 1–0. GuestNQCZ – GuestCNTD, freechess.org, 2017.

4.Nf3 Bb4?? 5.Bg7 Nf6 6.Bh8+-.

4.Nf3 Nf6 5.a3 Bd6 6.c4 0-0 7.cb5 cb5 8.Bb5 Qb6 9.Be2 Ba6 10.Nc3 Rc8 11.b5 Bb7 12.0-0 a6 13.Rb1 a5 14.Na4 Qd8 15.Rc1 Ne4 16.Rc8 Qc8? (better is 16...Bc8 17.d3 Nf6+-) 17.Nb6 Qd8 18.Na8 Ba8 19.Qc2 Qc7 (19...Nc5+-) 20.Qc7 Bc7 21.Rc1 f6 (21...Nc6+-) 22.Rc7 Nd6 23.a4 Ne4 24.Rc8 Kf7 25.Rb8 Bd5 26.d4 g5 27.h3 h5 28.b6 g4 29.hg4 hg4 30.Ne1 Bc6 31.Ba3 Nc3 32.Bg4 f5 33.Bf3 Ba4 34.b7 Bc6 35.Rf8 Kg6 (35...Kg7 36.b8Q Nd5 37.Qg3 Kh7 38.Rf7 Kh6 39.Qg7) 36.b8Q a4 (36...Nd5 37.Qg3 Kh7 38.Rf7 Kh6 39.Qg7) 37.Qe8 (37.Qg3 Kh7 38.Rf7 Kh6 39.Qg7) 37...Kg5 (37...Kh6 38.Qh5 Kg7 39.Rf7 Kg8 40.Qh7) 38.Qh5 1–0. Van Esbroeck,Dirk – Puri,Chaand, SN–2010-0-00292, 2010.

4.Nf3 Nf6 5.a4 Bb4 6.ab5 0-0=.

4.a3 Qg5 (4...a6 5.Nf3+=) 5.Nf3 (better 5.Nh3 Qh4 6.Bb5 Nb4 7.ab4 Qb4 8.Nc3 Qb2 9.Rb1+-) 5...Qd5? (5...Qe7 6.Bb5 Nb4 7.ab4 Qb4 8.Nc3 Qb2 9.Ne5+-) 6.d4 (6.Nc3 Qh5 7.Nb5 Kd8+-) 6...Nf6? (6...a6 7.c4! bc4 8.Nc3+/-) 7.Nbd2 (better 7.Nc3 Qf5 8.Bd3+-) 7...Bb7+= 8.c4 bc4 9.Bc4 Qf5 10.0-0 d5 (10...Be7 11.Re1+=) 11.Be2 (11.Bb5 a6 12.Ba4 Kd8+-) 11...Ne4 (11...Bd6 12.b5 Ne7 13.Ne5+/-) 12.Qb3 (12.Rc1 Nd2 13.Qd2 Kd8+-) 12...a6 (12...Nd2 13.Nd2 Bd6 14.Qc3+=) 13.Bd3 (13.Rfc1 Nd2 14.Nd2 Bd6+/-) 13...Bd6 (13...Nd2 14.Nd2 Qh5 15.Qd1 Qd1 16.Rfd1+/-) 14.Qc2+/- h5? (better Ne7+/-) 15.Ne4+- (15.Be4?! de4 16.Qe4 Qe4 17.Ne4 Nd8 18.Nd6 cd6+/-) 15...de4 16.Be4 Qb5 17.a4 Qb6 18.Rfc1?? (better 18.a5 Qb5 19.Bd3+-) 18...Nb4+= 19.Qb1 0-0 (19...Rb8 20.Ba3+=) 20.Ba3 (20.Bb7 Qb7 21.Ng5 g6 22.Ne6 Rfb8+-) 20...a5 21.Bb7 Qb7 22.Ne5 (better 22.Ng5 g6 23.Ne6 fe6 24.Qg6 Kh8 25.e4+/- (25.Qh5?! Kg7=)) 22...Rab8? (22...Be5 23.de5 Rfd8 24.Rc4=) 23.Qb3?? (better 23.Nd7+-) 23...c5 (23...Be5 24.de5 Rfd8 25.Bb4 Qb4 26.Qc2=) 24.Nc4+= Qd5 (better 24...Bc7!?+=) 25.Na5+/- cd4 26.Qd5 ed5 27.ed4 (better 27.Nc6!? de3 28.fe3+-) 27...Rfe8+/- 28.Bb4 Bb4 (28...Rb4!? 29.Nc6 Rb2+/-) 29.Nc6+- Rb6 (29...Bd2 30.Rc5 Rb6+-) 30.Nb4?? (better 30.a5 Rb7 31.a6+-) 30...Rb4+/- 31.a5 Ra8 32.a6 Ra7 33.Rd1 Rb2 (33...Rb6 34.Ra5+/-) 34.h3 Kf8 35.Rdc1 (35.Ra5 Rb6+-) 35...Ke7 (35...Rb4!?+/-) 36.Rc5+- Kd6 (36...Ke6 37.Raa5+-) 37.Rca5 (better 37.Raa5!?+-) 37...Rc2 38.R5a4 Rc4 39.g3 f6 40.Kg2 g6 41.Kf3 Rc2 42.R1a2 Rc3 43.Ke2 Rc8 44.Kd3 Rc1 45.R4a3 Rac7?? (45...Rd1 46.Ke3+/-) 46.Rb3 (46.a7 Rd1 47.Ke2 Ra7 48.Ra7 Rd4 49.R2a6 Kc5 50.Rc7 Kb4 51.Rb6 Ka5 52.Rf6 g5+-) 46...h4?? (better 46...Ra7+-) 47.a7 (better 47.Rb6 R1c6 48.a7 Ra7 49.Rc6 Kc6 50.Ra7 hg3 51.fg3 Kd6+-) 47...Ra7 (47...Rd1 48.Ke2 Ra7 49.Ra7 Rd4 50.Ra6 Kc5 51.Rf6+-) 48.Ra7 hg3 49.Ra6 Kd7 50.fg3 Rd1 51.Ke2 Rd4 52.Rb7 Kc8 53.Rg7 Kb8 54.Rg6 Rb4 55.Raf6 Rb2 (55...Rc4 56.h4+-) 56.Kf3 Rb3 57.Kg4 d4 58.Kh5 (58.Rg8 Ka7+-) 58...d3 (58...Rc3 59.Rd6+-) 59.g4 d2 60.Rd6 (60.Rf8 Ka7 61.Rf7 Rb7 62.Rb7 Kb7+-) 60...Kc7 (60...Rh3 61.Kg5+-) 61.Kh4 (61.h4 Rb2+-) 61...Rb6 62.Rd2 (better 62.Rb6 d1Q 63.Rgc6 Kd7 64.Rd6 Qd6 65.Rd6 Kd6 66.Kg5+-) 62...Rg6 63.Rc2 (63.g5 Rg7+-) 63...Kd7 64.Kg3 Rd6 65.Rf2 Rd5 66.Rf3 Ke6 67.h4 Rd7 68.g5 Rg7 (68...Rd1 69.h5+-) 69.Kg4 Rc7 (69...Rd7 70.g6 Rc7 71.h5+-) 70.Rf4 (70.g6 Kd5+-) 70...Ke5 (70...Rc1 71.g6 Rc8 72.h5+-) 71.h5 (71.g6 Ke6 72.h5+-) 71...Rh7 (71...Rc1 72.Rf5 Ke6 73.Rf3 Rg1 74.Rg3+-) 72.Rf5 (better 72.g6 Rg7+-) 72...Ke6 73.g6 Rh8 (73...Rg7 74.Kg5 Rd7 75.Rf6 Ke5 76.h6+-) 74.Kg5 Rh6 (74...Rh5 75.Kh5 Kf5+-) 75.Rf6 Ke5 76.Kh6 Kf6 77.Kh7 Kg5 78.g7 Kh5 (78...Kf6 79.g8Q Ke5 80.Kg7 Kd4 81.Qd8 Ke3 82.h6 Kf3 83.Qd5 Kf2 84.h7 Ke3 85.h8Q Kf4 86.Qh2 Ke3 87.Qhd2) 79.g8Q (79.g8R Kh4 80.Kh6 Kh3 81.Kh5 Kh2 82.Kh4 Kh1 83.Kg3 Kg1 84.Rf8 Kh1 85.Rf1) 79...Kh4 80.Kg7 (80.Qg2 Kh5 81.Kg7 Kh4 82.Kf6 Kh5 83.Qg5) 80...Kg3+- 81.Kf6 (81.Kf6 Kf2 82.Qe6 Kg2 83.Qe2 Kg3 84.Kg5 Kh3 85.Kf4 Kh4 86.Qg4) 1-0. Jaymarc_Gutierrez (2610) - JMESHUG (2670), Rated bullet game, lichess.org, 2023. (=1.b4 b5 2.Bb2 e6)

4.a4 ba4 (4...Bb7 5.ab5 Nb4 6.Nf3=) 5.b5+= Nce7 6.Nf3 c6 7.c4 (worse is 7.Ra4 cb5 8.Bb5 Rb8=) 7...cb5 8.cb5 Bb7 9.Be2 Nd5 10.0-0 Ngf6 (10...a6 11.ba6 Ba6 12.Ba6 Ra6 13.Ra4 Ra4 14.Qa4+=) 11.Qa4 Be7 12.Qd4 (12.Rc1 0-0+=) 12...Qb6 13.Qc4 Rc8 (13...a6 14.ba6 Qb2 15.ab7 Qb7 16.Ra8 Qa8 17.Rc1=) 14.Qa4 Ra8 15.Bd4 Qd8 16.Nc3 (16.Ba7?! Bc5 17.Bc5 Ra4 18.Ra4 d6=) 16...Nc3 17.dc3 0-0 18.Ne5 (18.Rfd1 Qc8+=) 18...Nd5 19.c4 (19.Qc2 d6 20.Nf3 Qc7+=) 19...Nb6 20.Qc2 White intends c5 20...Bf6 (20...d6!? 21.Nc6 Bc6 22.bc6 Qc7+=) 21.c5+/– Nd5 22.Bd3 g6 23.c6 (23.Rfd1 Qc7 24.Qb2 Be5 25.Be5 Qc5+-) 23...Bc8 (23...dc6!? 24.bc6 Bc8+/–) 24.Be4 Be5 25.Be5 f6? (better is 25...dc6 26.Qc6 Bd7+-) 26.c7 Qe7 27.Bd4 (27.Bd5 ed5 28.Bd4 a6+-) 27...f5 (27...Bb7 28.Bd5 Bd5 29.Ra7+-) 28.Bd5 ed5 29.Ba7 Ra7 (29...d6+-) 30.Ra7 d6 (30...f4 31.Qb3 Qc5 32.b6 fe3 33.fe3+-) 31.b6 1–0. DEFFM – GuestCCJN, freechess.org, 2018.

4.Bb5 c6 5.Bd3 a6 (5...Nf6 6.a3+/–) 6.Nf3+/– Qb6 (6...Nf6 7.a3+/–) 7.a3 Nd7 8.Bd4 (8.Nc3 c5+/–) 8...Qc7 9.Bb2 (9.e4 e5 10.Bb2 Ngf6+/–) 9...e5 (better is 9...Qb6!?=) 10.e4+/– d4 (10...Ngf6 11.Qe2 Bd6 12.c4 dc4 13.Bc4+/–) 11.0-0 (11.c3 c5 12.Qc2 dc3 13.dc3 Be7+/–) 11...Ngf6 (11...c5 12.c3 c4 13.Bc2=) 12.c3+/– c5 13.cd4 cd4 14.Nh4 (14.Qe2 Qb7+/–) 14...Nb6 (14...a5 15.b5+=) 15.Nf5 (15.f4 Bd6+/–) 15...Bf5 16.ef5 Be7 (16...Bd6 17.Qf3+=) 17.Qe2+/– 0-0 18.Rc1 (18.f4 Na4 19.Rc1 Qb6 20.fe5 Nb2 21.ef6 Bf6=) 18...Qd6 19.Re1 (worse is 19.Ba6 Na4 20.Bd4 ed4-/+) 19...Na4 20.Ra2 (better is 20.Bc1+=) 20...Nd5? (better is 20...Rfe8!?+=) 21.Qe5+- Qe5 (21...Nb2 22.Rb2 Nf4 23.Qd6 Bd6 24.Bc4+-) 22.Re5 Rfd8 (22...Nb2 23.Rb2 Nf4 24.Ba6+/–) 23.Be4 (23.Bd4 Bf6 24.Re4 Rac8+-) 23...Bf6 (23...Rac8 24.g3 (24.Bd5?! Nb2 25.g3 Bf6 26.Rb2 Be5=) 24...Nf6 25.Bd3+-) 24.Rd5 (24.Bd5?! Rac8 25.Re1 Rd5+=) 24...Rd5 25.Bd5 Rd8 (25...Rc8 26.f4 Rc2+-) 26.Bb7 (26.Bc4 Rc8 27.d3 h6+-) 26...Rd6 27.f4 (27.Be4 Rd8+-) 27...Rb6 28.Be4 a5 29.Ba1 ab4 30.Rc2 h6 (30...Kf8 31.Rc4 Ra6 32.Rb4+-) 31.Rc4 Nb2 (31...b3 32.Ra4 b2 33.Bb2 Rb2 34.Ra8 Kh7+-) 32.Bb2 ba3 33.Rc8 Kh7 34.Ba3 Rb3 35.Bc5 d3 (35...h5 36.Na3 Rb2 37.Nc4+-) 36.Na3 Rb2 (36...Bd4 37.Bd4 h5 38.Bd5 Ra3 39.Bf7+-) 37.Bd5 Rd2 38.Bf7 Rd1 39.Kf2 Rd2 (39...Bh4 40.g3 Rd2 41.Kf3 Rf2 42.Bf2 g6 43.fg6 Kg7 44.Bd4 Bf6 45.Rg8) 40.Kf3 h5 (40...Rg2 41.Kg2 h5 42.Bg6 Kh6 43.Rh8) 41.Bg6 Kh6 42.Rh8 1–0. DEFFM – griffel, freechess.org, 2018.

4.Bb5 Bd7 5.Bd7 Nd7 6.Ne2 (better 6.Nf3+=) 6...Bb4?? (better 6...Rb8+=) 7.Bg7+- f6 (7...Ngf6 8.Bh8 Bd6 9.Nbc3+-) 8.Bh8 Qe7 9.Nd4 0-0-0 (9...Ne5 10.Qe2+-) 10.Nc6 Qc5 (10...Qf8 11.Qe2 Nb8 12.Nd8 Kd8 13.Qg4+-) 11.Nd8 Kd8 12.0-0 (better 12.c3 Ba5+-) 12...d4 (12...Qf8 13.c3 Bd6 14.Qc2+-) 13.ed4 (better 13.a3 Ba5 14.Qg4 Qf8 15.ed4 Ne7+-) 13...Qd4 (13...Qf8 14.Qg4+-) 14.c3 f5 1–0. aravind555 (1610) – gernase1, lichess.org, 2019.

4.Nf3 Bb4?? 5.Bg7+- (5.Bb5?! Kf8+/–) 5...Nc6 (5...Ne7 6.Bh8 Ng6 7.Bg7+- (worse is 7.Bb5 c6+-)) 6.Bb5 Bd7 7.Bh8 Na5 (7...Nf6 8.c3 Be7 9.Bf6 Bf6 10.Qc2+-) 8.Bd7 Qd7 (8...Kd7 9.Ne5 Kc8 10.Nf7+-) 9.Be5 (better is 9.Ne5 Qa4 10.Qh5 0-0-0 11.Qf7 Qc2 12.Qe6 Kb7+-) 9...Nc4 10.0-0 f6 11.Bb2! Nb2 12.Qe2 Qc6 (12...Rb8+-) 13.Nd4 Qd6 (13...Qd7 14.Ne6! Qe6 15.Qb5 Kd8 16.Qb4+-) 14.c3 Ba3 (14...c5 15.Nb5 Qd7 16.cb4+-) 15.Na3 Qa3 16.Ne6 Rc8 17.Qb5 (better is 17.Qh5 Ke7 18.Nd4 Kf8+-) 17...c6 18.Qb7 Ne7 19.Qb4 Qb4 20.cb4 Nd3 21.a3 Kf7 22.Nd4 h5 23.Ne2 (23.Rfb1 Rg8+-) 23...a6 24.Nc1 Ne5 25.Nb3 Nc4 26.d3 Ne5 27.d4 Nc4 28.Nc5 Nd2 29.Rfd1 Nb3 (29...Nc4+-) 30.Nb3 Rg8 31.Nc5 Ra8 32.Nd3 h4 33.h3 Nf5 34.Rac1 a5 35.Rc6 ab4 36.ab4 Ra3 37.Nf4 Ne7 38.Rc5 Rb3 39.Nd5 Nd5 40.Rd5 Rb4 41.Rh5 1–0. Valpa – Ronan48, playchess.de, 2005.

4.Nf3 Nf6=.

4.a3 a6 5.c4 bc4 6.Bc4 Bb7 7.Nf3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.c4 bc4 7.Bc4).

4.a3 a6 5.Nf3 c5 6.bc5 Bc5 7.Be2 d5 8.0-0 Qc7 9.d3 Bd6 10.Nbd2 Ng4 11.h3 Nh2 12.Nh2 Bh2 13.Kh1 0-0 14.Nf3 Bd6 15.Rc1 e5 16.c4 e4 17.Nd4 dc4 18.de4 Be6 19.Bf3 Nd7 20.Ne6 fe6 21.e5 Ne5 22.Ba8 Nd3 23.Qc2 Nc1 24.Qc1 Ra8 25.Rd1 Rf8 26.Qc3 e5 27.f4 ef4 28.Rd6 fe3 29.Rd1 e2 30.Re1 Rf1 0–1. Phomopsis (1655) – LeraBe (1630), lichess.org, 2020.

4.Bb5 Bb4 5.Nf3 Ba6 6.Ba6 Na6 7.0-0 Be7 8.c4 0-0 9.d3 Rb8 10.Ba3 c5 11.Nc3 (11.Qa4 Rb6=) 11...Nb4 (11...Qa5 12.Nb5=) 12.Nb5 (12.Bb4 cb4 13.Nb5 Qa5=) 12...a6 13.Nc3 d5 14.cd5 ed5 15.Bb4 Rb4 16.a3 Rb8 17.Rb1 (17.Qa4 Qb6=) 17...Qd6 (17...Qa5 18.Rb3=+) 18.Rb8 Rb8 19.d4 (19.Qc2 c4 20.dc4 Rc8=) 19...h6 (19...c4 20.Nb1-/+) 20.dc5=+ Qc5 21.Ne2 (21.Nb1 Bd6=+) 21...Qa3-/+ 22.Ned4 Qc5 (22...Rb2 23.Nf5 Bc5 24.N3d4-/+) 23.Qa4=+ a5 24.Ne5 Rb4 (24...Ra8 25.Nec6=+) 25.Qa1= a4?? (25...Rb7=) 26.Ndc6?? (better 26.Nd3 Qc7 27.Nb4 Bb4 28.Rc1+-) 26...Rb6 (26...Re4 27.Rc1 Qa3 28.Ne7 Qe7 29.Nc6=+) 27.Ne7 (27.Qa4!? Bd6 28.Qa7=+) 27...Qe7-/+ 28.Nf3 a3 29.Rc1 Kh7 30.Rc3 (30.Qd4 Rb2 31.Rf1 Kg8-/+) 30...Ra6 (better 30...Ne4!? 31.Rc1 Qb4-+) 31.h3 (31.Nd4 Ne4 32.Rc2 Qb4-/+) 31...a2 (31...Qb4 32.Rc2-/+) 32.Rc2 Qa3 33.Nd4 Ne4 34.f3?? (34.Kh1!?-/+) 34...Nc5 (better 34...Qe3 35.Kh2 Ng5-+) 35.Ne2?? (35.Kf2-+) 35...Nb3 (35...Qe3 36.Kh1 Nb3 37.Qa2 Ra2 38.Ra2 d4 39.Nd4 Qe1 40.Kh2 Nd4-+) 36.Qc3 (36.Ra2 Qa2 37.Qd1-+) 36...a1Q 37.Kh2 Qc3 38.Rc3 Qb4 (38...Qb4 39.Rd3 Qc4-+; 38...Qb2 39.Rb3 Qb3 40.e4 de4 41.fe4 Qb8 42.Kg1 Qb1 43.Kh2 Qe4 44.Nc1 Qf4 45.Kg1 Ra1 46.g4 Qd2 47.g5 Rc1) 0–1. Markzela (1715) – yasareker (1975), lichess.org, 2020.

4.Bb5 Bb4 5.Nf3 Bd6 6.Na3 c5 (6...Bb7 7.Rb1+=) 7.Nc4 (7.Rb1 0-0+=) 7...Be7 (7...Bc7 8.0-0=) 8.0-0 (8.Bf6 gf6 9.Rb1 Rg8+=) 8...a6 (8...0-0 9.Rb1=) 9.Ba4+= Bb7 (9...0-0 10.Rb1+=) 10.Rb1 (10.Rb1 Bd5 11.Nb6 Qb6 12.Bf6=). GuestGRDT – GuestTKJK, freechess.org, 2020.

4.Bb5 Bb7 5.a3?? (5.Nf3 Bb4 6.a3 Be7=) 5...a6 (better 5...Bg2 6.Be2 Bh1-+) 6.Bf1+= d5 7.Nf3 c5 8.bc5 Bc5 9.c4 Nc6 (9...dc4 10.Bc4 Nbd7 11.d4+=) 10.cd5+- ed5 11.Nc3 0-0 12.Rb1 Qd6 (better 12...Bd6!?+-) 13.Na4+- Ba7?? (better 13...Rab8 14.Nc5 Qc5 15.Bf6 gf6+-) 14.Bf6 Rab8 (14...Qf6 15.Rb7 Qd6 16.Qc2+- (16.Ba6?! Na5+-)) 15.Bc3 (better 15.Bh4!? Qa3 16.Bg3 d4+-) 15...Qa3 16.Ne5 (better 16.d4+-) 16...Rfe8 (16...d4 17.ed4 Qe7+-) 17.Nd7 (17.Rb7 Rb7 18.Nc6 Qd6 19.Na7 d4+-) 17...d4 18.Nb8 dc3 19.Nc6 (19.Na6?! cd2 20.Qd2 Qa4+-; 19.Ba6?! cd2 20.Qd2 Rb8 21.Rb7 Qa4+-) 19...cd2 20.Qd2 Bc6 21.Nc3 Qe7 22.Ne2 (22.Ba6 Bg2 23.Rg1 Ba8+-) 22...Rd8 23.Qb4 (23.Qa5 Qd7+-) 23...Bc5 Threatening mate: Bxb4 24.Qb2 (better 24.Qc3 Ba4 25.Nc1 Rd1 26.Ke2 Qd8+-) 24...a5 (24...Be4 25.Nf4 Ba3+-) 25.Nf4?? (better 25.Nc3 Bb4 26.Bc4+-) 25...Bb4-/+ 26.Ke2 Rd2?? (26...Rd2 27.Qd2 Bd2 28.Rb8 Be8+-; 26...Qe4 27.f3 Qb1 28.Qb1 Rd2 29.Ke1 Rb2 30.Kd1 Rb1 31.Kc2 Re1-+) 0–1. aravind555 – Bassnectar (1610), lichess.org, 2019.

4.a3 Bb7 5.f3 Bd6?? 6.Bg7+- Qh4 7.Ke2 Be4 8.Bh8 Nh6 9.fe4 Qe4+/– 10.Kf2 Ng4 11.Qg4 Qg4 12.Nf3 e5 13.Be5?? Be5-/+ 14.Ne5? Qd4-+ 15.Kf3 Qa1 16.Nc3 Nc6 17.Nc6 dc6 18.g3?? Qa3 19.Bd3 Qb4 20.Re1 Kf8 0–1. bunnyrabbitz – alignment, ChessWorld.net, 2011.

4.d4 Bb4=+ 5.Nc3 Bb7-/+ 6.e5 d6 7.ed6 Qd6 8.a3 Bc3 9.Bc3 Nc6 10.Nf3 Nf6-/+ 11.Bd3 0-0 12.d5? ed5 13.Ng5 h6 14.Nf3 Rfe8 15.Be2 Ne4 16.Bb2 Qg6 17.0-0 Rad8 18.a4 b4 19.c4?? dc4 20.Qe1 c3 21.Bc1 Bc8 22.Nh4 Qf6 23.Bf3 c2 24.Be3 b3 25.Bd1 Qa1 (25...Qa1 26.Bc2 Qe1 (26...bc2?! 27.Qa1 Nb4 28.a5-+) 27.Re1 bc2-+) 0–1. West Islander – glo1, ChessWorld.net, 2009.

4.f4 Bb7-/+ 5.Bd3 Nf6 6.Qe2 Bb4 7.Nf3 Bc5 8.e5 Nd5 9.g3 Nc6 10.Be4 f5 11.ef6 Nf6 12.d4 Nd4-+ 13.Bd4 Bd4 14.Bb7 Ba1 15.Ba8 Qa8 16.0-0 Qd5 17.c3 Qc5 18.Kg2 Bc3 19.Rc1 b4 20.Qa6 Nd5?? 21.Qa8 Kf7? 22.Qh8?? Ne3= 23.Kg1 Nd1 24.Kh1 Qd5 25.Kg2 Ne3 26.Kf2 Nf5?? 27.Ng5 Ke7 28.Nc3 bc3 29.Nf3?? Qa2-+ 30.Kg1 Qb2 31.Re1 c2 32.g4? c1Q 33.Rc1 Qc1 (33...Qc1 34.Kf2 Qe3 35.Kg2 Qe2 36.Kg1 Qf3 37.gf5 Qg4 38.Kh1 Qf4 39.Qg7 Kd6-+) 0–1. baovn21 – guiovanni, kurnik, 2011.

4.a3 c6 5.e3=.

4.a3 d5 5.e3 a6 6.Be2 Nbd7 7.0-0 c5 8.bc5 Bc5 9.d3 0-0 10.Nbd2 Bb7 11.c4 bc4 12.dc4 dc4 13.Bc4 Nb6 14.Be2 Qe7 15.Rb1 Rfd8 16.Bd4 Bf3 17.Bf3 Rab8 18.Bc5 Qc5 19.Qc1 Qc1 20.Rfc1 g6 21.Nb3 Nbd5 22.Nc5 a5 23.Nb7+/– Rdc8 24.Rc8 Rc8 25.Na5 Nc3 26.Rb4 Nfd5 27.Rc4 Rb8 28.h4 Rb1 29.Kh2 Ra1 30.e4+- Ra3 31.ed5 ed5 32.Rc5 d4 33.Nc6 d3 34.Ne5 Nb1 35.Rd5 d2 36.Nc4 Ra2 37.Be4 d1Q 38.Rd1 Nc3 39.Rd2 Ra4 40.Rd8 Kg7 41.Bd3 f5 42.Rd7 Kh6 43.g4 fg4 44.Ne5 Ra1 45.Ng4 Kh5 46.Kh3 Rh1 47.Nh2 Kh6 48.Bc2 Ne2 49.Kg2 Rc1 50.f4 Rc2 51.Ng4 Kh5 52.Nf6 (52.Nf6 Kh4 53.Rh7#) 1–0. Schalkwijk,Peter – Sarihan,Sefa, ZL–2006–0-00015, 2006.

4.a3 g6 5.e3 (5.e4 a6 6.c4+/–) 5...Rg8 (5...c6 6.Ne5 Bg7 7.Qf3+=) 6.Nc3 (better is 6.Bb5!? Bb7 7.0-0+-) 6...a6+= 7.Bd3 (7.Be2 Bb7+=) 7...Bg7 8.0-0 (8.Be2 Bb7+=) 8...d5 (8...Bb7 9.Be2+=) 9.Rb1 (9.Be2 Qe7+=) 9...Nbd7 10.e4 de4 (10...Bb7 11.Qe2+=) 11.Ne4 (11.Be4 Ne4 12.Ne4 Bb2 13.Rb2 Bb7+=) 11...Ne4 (11...Bb7 12.Qe2+=) 12.Be4+/– Rb8 13.Bg7 Rg7 14.Ng5?? (better is 14.d4+/–) 14...Qg5-+ 15.Bc6 (15.Re1 Kf8-+) 15...Kd8 (15...Rb6 16.Qf3-+) 16.Re1 Bb7 17.Bd7?? (17.Bb7 Rb7 18.Qf3 Qd5-+) 17...Kd7 (17...Qg2) 18.d4 (18.f3-+) 18...Qg2 0–1. Nautiluschess – Odranoel, ICS blitz, 2001.

4.e4 Ne4 5.Bb5 Bb4 6.Bg7 Rg8 7.Bb2 Rg2 8.Rf1 c5 9.c3 Ba5 10.d3 Nd6 11.Ba4 Qb6 12.Bb3 Bb7 13.Nbd2 Nc6 14.Qe2 Ba6 15.0-0-0 0-0-0 16.c4 Rgg8 17.Ne4 Ne4 18.Qe4 Nb4 19.Qa8 Kc7 20.Qe4 Rb8 21.Qf4 Kc8 22.Qf7 Rd8 23.Bf6 Na2 24.Ba2 Qb4 25.Rd2 Qa3 26.Rb2 Qd3 27.Rb8 1–0. mania_mania (1850) – inderos_39 (1860), lichess.org, 2020.

3.a3 a5 4.e3 ab4 5.ab4 Ra1 6.Ba1 Bb4?? (better is 6...Nf6 7.b5 d5=) 7.Bg7+- f6 (7...Ba6 8.Ne2+-) 8.Bh8 Qe7 9.Qg4 Qf7 (9...Kf8 10.Nf3+-) 10.Bf6 (better is 10.Qb4 Nc6 11.Qc3 Qg6+-) 10...Bd2 11.Nd2 Nf6 12.Qc4 Ba6 (12...Nc6+-) 13.Qc7 Bf1 14.Qb8 Ke7 15.Kf1 Ng4 (15...Qg6 16.c4 Qc2 17.Ke1+-) 16.Ngf3 e5 (16...Qg6 17.c4+-) 17.Qb6 e4 18.Qb4 d6 19.Qe4 (19.Qe4 Ne5 20.Ne5 de5 21.Qe5 Qe6 22.Qe6 Ke6 23.c4+-) 1–0. PepRally – grigoropoulo3, Live Game Caissa's Web, 2004. (=1.a3 b6 2.b4 e6 3.Bb2)

3.a3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6).

3.b5 Bb4?? 4.Bg7+- Qg5 5.Bh8 Qb5 6.e3 Qg5 7.Nf3 Qh5 8.g4! Qh6 (8...Qg4 9.Rg1 Decoy) 9.h4 Bb7 10.g5 Qh5 11.Be2 Qg4 12.Rg1 Qf5 13.Nd4 (13.Ne5 Nc6 14.Bd3 Qh3+-) 13...Qh3 14.Be5 Bc5 (14...Bd6 15.Bf1 Qh4 16.Bd6 cd6 17.Nb5+-) 15.Bg4 Qh4 16.Nf3 Bf3 17.Qf3 Nc6 18.Bf4 Nf6 19.gf6 0-0-0 (19...Qf6 20.Bc7 Qg7 21.Rg2+-) 20.Bg3 Qg5 21.Nc3 Ba3 (21...Bb4 22.Ne4 Qa5 23.c3+-) 22.Rb1 a6 23.Bh5 Qc5 24.Qf4 Nb4 25.Kf1 (25.Bf7 Rf8 26.Qe4 Qc6 27.Qh7 Nc2 28.Ke2 Bd6+-) 25...Kb8 26.Rb3 Nc2 (26...d6 27.Ra3 Nd5 28.Qa4 Nc3 29.Qa6 Qb5 30.Qb5 Nb5 31.Rb3+-) 27.Bd1 Bc1 28.Nb1 d6 29.Qa4 Na3 30.Na3 Ba3 31.Bf3 Qc1 32.Ke2 b5 33.Rb5! Ka7 (33...ab5 34.Qa8 Mate attack) 34.Rb7 (34.Rb7 Ka8 35.Qa6) 1–0. Taulien,Hans_Juergen (2350) – Kueppers,Michael (1995), remoteschach.de, 2002.

3.b5 c6 4.a4 a6 5.c4 (5.Nf3 d5=) 5...d6 6.e3 ab5 (6...Nf6 7.Nf3=) 7.ab5 Ra1 8.Ba1 cb5 9.cb5 Bd7 10.Nf3 Be7?? (10...Nf6 11.Bf6 Qf6 12.d4=) 11.Be2?? (better 11.Bg7 Bf6 12.Bh8 Bh8 13.d4+-) 11...Nf6= 12.0-0 0-0 13.d4 Qe8 Exerts pressure on the isolated pawn 14.Nbd2 (better 14.Qd3+=) 14...Bb5-/+ 15.Bb5 Qb5 16.Qc2 Qc6 17.Qb3 Qd7 (17...Nbd7!?-/+) 18.Qb6=+ Nc6 19.Rc1 Rc8 20.Bb2 Bd8 21.Qb5 Na7 22.Qd7 Nd7 23.Rc8 Nc8 24.Kf1 Ncb6 25.Ke2 (25.Ke2 d5 26.Ba3=). BeepBeepImAJeep (2575) – german11, lichess.org, 2016.

3.b5 f5 4.e3 Nf6 5.c4 Be7 6.a4 (6.Nf3 a6=) 6...0-0 (6...Bb7 7.Nf3=) 7.Nf3 d6 8.Be2 Bb7 9.Nc3 e5 10.d4 Nbd7 (10...e4 11.Ng5 Bc8 12.0-0+=) 11.Ng5+= Qe8 12.Ne6 Rf7? (better 12...Qg6!? 13.Nf8 Qg2+=) 13.Nc7+- Qc8 (13...Qd8 14.Na8 Bg2 15.Rg1 Ba8 16.a5+-) 14.Na8 Qa8 (14...Bg2 15.Nb6 Nb6 16.Rg1+-) 15.d5 f4 (15...Nc5 16.a5 ba5 17.Ra5+-) 16.e4 (16.ef4!? ef4 17.a5 ba5 18.Ra5 Bd8+-) 16...Nc5 17.f3 (17.Bf3 a5+-) 17...g5 (17...Qd8 18.0-0+-) 18.Ba3 (18.0-0 Bc8+-) 18...Kh8 (18...Qc8 19.0-0+-) 19.Bc5 bc5 20.a5 a6 (20...Bc8 21.0-0+-) 21.ba6 Qa6 22.Nb5 Bc8 23.h3 (23.0-0 Bd8+-) 23...Nh5 (23...Bd8 24.Qd2+-) 24.Qb3 (24.0-0 Ng3 25.Re1 Bd8+-) 24...Ng3 25.Rg1 (25.Rh2 Bd8+-) 25...Bd7 (better 25...Bd8+-) 26.Nc7 Qc8 27.Nb5 (better 27.a6 Qc7 28.a7+-) 27...Qf8?? (27...Qa6 28.Kf2 g4 29.hg4 Bh4+-) 28.a6+- Qh6 (28...Bb5 29.cb5 Ne2 30.Ke2 Bf6+-) 29.a7 Qh4 (29...Rf8 30.a8Q Ra8 31.Ra8 Bf8 32.Nc3+-) 30.Kd2 (better 30.a8Q Kg7 31.Kd1 Ne2 32.Ke2 Qg3+-) 30...Ne2 31.Ke2 Rf8 32.a8Q Ra8 33.Ra8 Kg7 34.Ra7 g4 35.Rd7 gf3 36.gf3 Kh6 37.Qd1 (37.Nd6 Qf6 38.Qb7 Qg5 39.Re7 Qg6 40.Rg6 Kg6 41.Rh7 Kf6 42.Qg7) 37...Qh3 38.Re7 Qh2 39.Kd3 Qf2 (39...Qh3 40.Rh1 Kg6 41.Rh3 Kf6 42.Re6 Kg7 43.Qg1 Kf8 44.Nd6 h5 45.Re8) 40.Qe1 Qb2 (40...Qf3 41.Kc2 Qg3 42.Rg3 fg3 43.Qg3 Kh5 44.Rh7) 41.Qh4 1–0. BeepBeepImAJeep (2615) – wildtal (1930), lichess.org, 2015.

3.c3 Bb7 4.e3 g6 5.Nf3 Bg7 6.d4 Ne7 7.Bd3 0-0 8.Nbd2 h5 9.0-0 c6 10.a3 d5 11.Qc2 a5 12.Rfe1 Nd7 13.e4 ab4 14.ab4 Ra1 15.Ra1 de4 16.Ne4 Nd5 17.Ned2 Re8 18.Re1 Qc7 19.Ra1 Bf8?? (19...Qd8 20.Nc4 Qc7 21.Ra7+=) 20.Nb3 (better is 20.Bg6!? Nf4 21.Be4+-) 20...Be7 21.Nbd2 Bd8 (21...Bf8!?=) 22.Be4 Qd6 23.Bd5 (23.Nc4!? Qc7 24.Nfe5 Ne5 25.Ne5+/–) 23...cd5 24.Re1 Bc7 25.Ra1 Qh2?? (better is 25...Ra8=) 26.Nh2+- Bh2 27.Kh2 Nf6 28.Kg1 Ng4 (28...Rc8 29.Qd3 Rc7 30.Ra7+-) 29.Kf1 (29.Qa4!? Nf6+-) 29...b5 30.Kg1 f5 (30...Bc6 31.Nf3+-) 31.Nf3 (better is 31.Ra7 Bc6 32.Rc7+-) 31...f4 (31...Re7 32.Ra7 Kf7 33.Qe2+-) 32.Re1 (better is 32.Qg6 Kf8 33.Qh5 Re7+-) 32...g5 33.Ne5 (better is 33.Qg6 Kf8 34.Ng5 Nh6 35.Nh7 Ke7 36.Qe6 Kd8 37.Qd6 Kc8 38.Re8) 33...Nf6 34.Nf3 (34.Qg6 Kf8 35.Qf7) 34...g4?? (34...Ng4 35.Qg6 Kf8 36.Ng5 Re7 37.Re6 Bc6 38.Qf5 Ke8 39.Qf7 Kd8 40.Qe7 Kc8 41.Rc6 Kb8 42.Qc7 Ka8 43.Ra6) 35.Ne5 (35.Qg6 Kh8 36.Re5 Re7 37.Qf6 Kg8 38.Rg5 Kh7 39.Qe7 Kh6 40.Qg7) 35...h4 Black prepares the advance g3 36.Bc1 (36.Qg6 Kf8 37.Qf7) 36...g3 37.fg3 (37.Qg6 Kf8 38.Qf7) 37...fg3 38.Nf3 (38.Qg6 Kf8 39.Qf7) 38...Ng4 (38...Ne4+-) 39.Be3 (39.Qg6 Kh8 40.Qe8 Kg7 41.Re6 h3 42.Re7 Kf6 43.Qf7) 39...e5 40.Qd2 (40.Qg6 Kf8 41.Qg4 h3 42.Qf5 Ke7 43.Bg5 Kd6 44.de5 Kc7 45.Qf7 Kb8 46.Qe8 Bc8 47.Bf4 h2 48.Kh1 Kc7 49.e6 Kb6 50.Qd8 Ka7 51.Qc7 Ka6 52.Ra1) 40...ed4 (40...e4 41.Nh4 Ra8 42.Qe2+-) 41.Bd4 Re1 42.Qe1 Nh6 43.Be5 (43.Qe8 Kh7 44.Ng5) 43...Nf5+- 44.Bd4 h3?? (44...Nh6 45.Qe8 Kh7 46.Ng5) 45.gh3 (45.Qe6 Kf8 46.Ng5 h2 47.Kh1 Nd4 48.Qf7) 45...Nd4 46.Nd4 Kh7 47.Qg3 (47.Qg3 Bc8 48.Qc7 Kg6 49.Qc8 Kf7 50.Qe6 Kf8 51.Nf5 d4 52.Qf6 Ke8 53.Qe7; 47.Qe7 Kg6 48.Qe6 Kh7 49.Nf5 Kh8 50.Qe5 Kh7 51.Qg7) 1–0. Fournier,Frederic – pascale, Active Blind, 2008.

3.c3 Nf6 4.d4 Be7 5.Nd2 0-0 6.Ngf3 a5 7.b5 c6 8.c4 d5 9.e3 dc4 10.Bc4 cb5 11.Bb5 Ba6 12.a4 Qd5 13.Qe2 Nbd7?? 14.0-0 Bb5= 15.ab5 Ne4 16.Rfd1 Ndf6 17.Ne4 Ne4 18.Ne5 Rac8 19.Nc6 Bf6 20.Ba3 Rfe8 21.Rac1 h6 22.f3 Ng5 23.h4 Nh7= 24.Rc2 Bh4 25.Rdc1 Qd7 26.Ne5 Rc2=+ 27.Rc2 Qd5 28.Qc4 Qc4 29.Rc4 Bf6 30.Rc6 1–0. ashllley – bobnyc, caissa.com, 2006.

3.c4 a6 A) 4.Nf3 A1) 4...Bb7 5.b5 (5.a3 Nf6 6.Nc3 Nc6 7.d4 Ne7 8.e3 Nf5 9.Bd3) 5...ab5 6.cb5 Nf6 7.e3 d5 8.Be2 c5 9.Nc3; A2) 4...Nc6 5.b5 (5.a3 Nf6 6.Nc3 Bd6 7.e3 Bb7 8.Bd3 0-0 9.0-0) 5...Nce7 6.Nc3 Nf6 7.e3 ab5 8.Nb5 Bb7 9.Bd3; A3) 4...Nf6 5.a3 (5.b5 Bb7 6.Nc3 Bd6 7.e3 0-0 8.Bd3 ab5 9.cb5) 5...Nc6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 Qe7 9.0-0; B) 4.Nc3 B1) 4...Nc6 5.a3 (5.b5 ab5 6.cb5 Ne5 7.Nf3 Nc4 8.Bc1 Nf6 9.e4) 5...Bb7 6.e3 Nf6 7.Nf3 Bd6 8.Bd3 h6 9.0-0; B2) 4...Nf6 5.b5 (5.a3 Bb7 6.Nf3 Bd6 7.e3 Nc6 8.Bd3 0-0 9.0-0) 5...Bb4 6.Nf3 ab5 7.cb5 0-0 8.g3 d5 9.Bg2; B3) 4...Bb4 5.Nf3 (5.e3 Nc6 6.a3 Be7 7.Nf3 f5 8.d4 Nf6 9.d5) 5...Nf6 6.e3 Nc6 7.Bd3 0-0 8.Qb3 Bb7 9.0-0; C) 4.b5 C1) 4...Bb7 5.Nc3 (5.Nf3 Nf6 6.Nc3 ab5 7.cb5 d5 8.e3 c5 9.bc6) 5...Nf6 6.Nf3 ab5 7.cb5 c5 8.g3 d5 9.Bg2; C2) 4...Nf6 5.Nc3 (5.Nf3 ab5 6.cb5 d5 7.g3 Bd6 8.Nc3 c5 9.Bg2) 5...ab5 6.cb5 d5 7.Nf3 Bd6 8.g3 c5 9.Bg2; C3) 4...ab5 5.cb5 Nf6 6.Nf3 d5 7.g3 c5 8.Bg2 Nbd7 9.Nc3; D) 4.a3 D1) 4...Nc6 5.Nf3 (5.e3 f5 6.Nf3 Bb7 7.Nc3 Nf6 8.d4 Bd6 9.Bd3) 5...Nf6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 Bb7 9.0-0; D2) 4...Bb7 5.Nc3 (5.Nf3 Nf6 6.Nc3 Nc6 7.e3 Bd6 8.Bd3 Qe7 9.0-0) 5...Nf6 6.Nf3 Bd6 7.e3 Nc6 8.Bd3 Qe7 9.0-0; D3) 4...Nf6 5.Nc3 (5.Nf3 Nc6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 Bb7 9.0-0) 5...Nc6 6.Nf3 Bd6 7.e3 0-0 8.Bd3 Bb7 9.0-0.

3.c4 Na6 A) 4.b5 Nc5 5.Nf3 (5.Nc3 Bb7 6.Nf3 Nf6 7.g3 g5 8.h3 Bg7 9.Bg2) 5...Bb7 6.Nc3 Nf6 7.g3 a6 8.Bg2 ab5 9.cb5; B) 4.e3 B1) 4...Nf6 5.a3 (5.b5 Nc5 6.Nc3 Bb7 7.Nf3 a6 8.ba6 Ra6 9.Be2) 5...c5 6.b5 Nc7 7.Nc3 d5 8.Nf3 Bd6 9.Bd3; B2) 4...Bb7 5.a3 (5.b5 Nc5 6.Nf3 a6 7.Nc3 Nf6 8.ba6 Ra6 9.Be2) 5...c5 6.b5 Nc7 7.Nc3 Nf6 8.Nf3 Bd6 9.Bd3; B3) 4...Nb4 5.a3 (5.Nc3 Nf6 6.a3 Na6 7.d4 Bb7 8.Nf3 Bd6 9.Bd3) 5...Nc6 6.Nf3 f5 7.Nc3 Nf6 8.Be2 Be7 9.0-0; C) 4.Nf3 C1) 4...Nf6 5.a3 (5.b5 Nc5 6.Nc3 Bb7 7.g3 g5 8.h3 h5 9.Bg2) 5...Bb7 6.Nc3 Bd6 7.e3 0-0 8.Bd3 c5 9.b5; C2) 4...Bb7 5.a3 (5.b5 Nc5 6.Nc3 Nf6 7.g3 g5 8.h3 h5 9.Bg2) 5...Nf6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 c5 9.b5; C3) 4...Nb4 5.a3 (5.Nc3 Nf6 6.a3 Nc6 7.e3 Bb7 8.Bd3 Ng4 9.Qc2) 5...Nc6 6.e3 Nf6 7.Nc3 Bb7 8.Bd3 Ng4 9.Qc2; D) 4.a3 D1) 4...Bb7 5.Nf3 (5.Nc3 Nf6 6.Nf3 Bd6 7.e3 0-0 8.Bd3 c5 9.b5) 5...Nf6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 c5 9.b5; D2) 4...Nh6 5.Nc3 (5.Nf3 Bb7 6.Nc3 Bd6 7.Nb5 0-0 8.Nd6 cd6 9.e3) 5...Bb7 6.Nf3 Bd6 7.Nb5 0-0 8.Nd6 cd6 9.e3; D3) 4...Nf6 5.Nc3 (5.Nf3 Bb7 6.Nc3 Bd6 7.e3 0-0 8.Bd3 c5 9.b5) 5...Bd6 6.Nf3 Bb7 7.e3 0-0 8.Bd3 c5 9.b5.

3.c4 Nc6 A) 4.a3 A1) 4...Bb7 5.Nf3 (5.Nc3 a5 6.b5 Ne5 7.e4 Nf6 8.d4 Ng6 9.e5) 5...Nf6 6.Nc3 Bd6 7.Nb5 Be7 8.e3 a6 9.Nc3; A2) 4...a6 5.Nf3 (5.Nc3 Nf6 6.Nf3 Bb7 7.e3 Bd6 8.Bd3 0-0 9.0-0) 5...Nf6 6.Nc3 Bd6 7.e3 Bb7 8.Bd3 0-0 9.0-0; A3) 4...Nf6 5.Nf3 (5.e3 Bb7 6.Nf3 Bd6 7.Nc3 a5 8.Nb5 ab4 9.Nd6) 5...Bb7 6.Nc3 Bd6 7.Nb5 Be7 8.e3 a6 9.Nc3; B) 4.Nf3 B1) 4...a6 5.b5 (5.a3 Nf6 6.Nc3 Bd6 7.e3 0-0 8.Bd3 Bb7 9.0-0) 5...Na5 6.e3 ab5 7.cb5 Nf6 8.Nc3 Bb7 9.Bd3; B2) 4...Nb4 5.Nc3 (5.e3 Nf6 6.a3 Na6 7.d4 Bb7 8.Nc3 Bd6 9.Bd3) 5...Nf6 6.a3 Na6 7.g3 Bb7 8.Bg2 Bd6 9.0-0; C) 4.e3 C1) 4...Bb7 5.b5 (5.Nf3 Nb4 6.a3 Nc6 7.Nc3 Nf6 8.Bd3 Ng4 9.Qc2) 5...Na5 6.Nf3 Nf6 7.Nc3 Qe7 8.Na4 a6 9.Be5; C2) 4...a6 5.a3 (5.Nf3 Nb4 6.Nc3 Nf6 7.a3 Nc6 8.Bd3 Bb7 9.0-0) 5...f5 6.Nc3 Nf6 7.d4 Bd6 8.Nf3 0-0 9.Bd3; C3) 4...Nb4 5.Nf3 (5.a3 Nc6 6.Nf3 Bb7 7.Nc3 Nf6 8.Bd3 Ng4 9.Qc2) 5...Nf6 6.a3 Nc6 7.Nc3 Bb7 8.Bd3 Ng4 9.Qc2; D) 4.b5 D1) 4...Nce7 5.Nf3 (5.Nc3 Nf6 6.Nf3 Bb7 7.e3 a6 8.Bd3 ab5 9.Nb5) 5...Nf6 6.Nc3 Bb7 7.e3 a6 8.Bd3 ab5 9.Nb5; D2) 4...Na5 5.e3 (5.Qa4 Nf6 6.Nf3 Bb7 7.Nc3 a6 8.e3 ab5 9.cb5) 5...Nf6 6.Nf3 Bb7 7.Nc3 Bd6 8.Bd3 0-0 9.0-0.

3.c4 f5 4.Nf3 (4.Qa4 A) 4...a6 5.Nc3 (5.Nf3 Bb7 6.Nc3 Nc6 7.a3 Nf6 8.d4 Bd6 9.c5) 5...Bb7 6.Nf3 Nc6 7.a3 Nf6 8.d4 Bd6 9.c5; B) 4...Na6 5.a3 (5.Bc3 Nf6 6.d3 Bb7 7.Nf3 Bd6 8.Na3 c6 9.Rb1) 5...Nf6 6.Nc3 Bb7 7.Nf3 Be7 8.e3 0-0 9.Bd3; C) 4...Bb7 5.Nc3 (5.Nf3 a6 6.d4 Nc6 7.a3 Nf6 8.Nc3 Bd6 9.c5) 5...a6 6.Nf3 Nc6 7.e4 fe4 8.Ne4 Nf6 9.Nf6; 4.b5 A) 4...Nf6 5.Nf3 (5.Nc3 a6 6.Nf3 Bb7 7.e3 ab5 8.cb5 Bd6 9.Bc4) 5...Bb7 6.Nc3 a6 7.e3 ab5 8.cb5 Bd6 9.Bc4; B) 4...Bb7 5.Nf3 (5.Nc3 Nf6 6.Nf3 a6 7.e3 ab5 8.cb5 Bd6 9.Bc4) 5...Nf6 6.Nc3 a6 7.e3 ab5 8.cb5 Bd6 9.Bc4; C) 4...a6 5.Nc3 (5.Nf3 Nf6 6.Nc3 Bb7 7.e3 ab5 8.cb5 Bd6 9.Bc4) 5...Nf6 6.Nf3 Bb7 7.e3 ab5 8.cb5 Bd6 9.Bc4; 4.a3 A) 4...Nf6 5.Nf3 (5.Nc3 Bb7 6.Nf3 Nc6 7.e3 Bd6 8.Nb5 Be7 9.Bd3) 5...Bb7 6.Nc3 Nc6 7.e3 Bd6 8.Nb5 Be7 9.Bd3; B) 4...Nc6 5.Nf3 (5.Nc3 Nf6 6.Nf3 Bb7 7.e3 Bd6 8.Nb5 Be7 9.Bd3) 5...Nf6 6.Nc3 Bb7 7.e3 Bd6 8.Nb5 Be7 9.Bd3; C) 4...Bb7 5.Nf3 (5.Nc3 Nc6 6.Nf3 Nf6 7.e3 Bd6 8.Nb5 Be7 9.Bd3) 5...Nf6 6.Nc3 a5 7.b5 Bd6 8.g3 g5 9.Rg1) 4...Nf6 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+-; 4...Bb7 5.b5 (5.Qa4 a6 6.Nc3 Nc6 7.a3 Nf6 8.d4 Bd6 9.c5) 5...Nf6 6.Nc3 a6 7.e3 ab5 8.cb5 Bd6 9.Bc4; 4...Na6 5.a3 (5.b5 Nc5 6.Nc3 Nf6 7.d4 Nce4 8.Ne5 Bb4 9.Qb3) 5...Nf6 6.Nc3 Bb7 7.d4 Bd6 8.b5 Nb8 9.g3) 5.b5 (5.Qa4 Be7 6.Nc3 0-0 7.g3 Bb7 8.Bg2 Nc6 9.b5) 5...Bb7 6.g3 (6.e3 a6= 7.Nc3 ab5 8.cb5 Bd6 9.Bc4) 6...d6 (6...Bf3 7.ef3 a6 8.f4= (8.Bd3 Bd6 9.0-0) 8...c6 9.Nc3; 6...g5 7.Rg1 g4 8.Nh4 a6 9.Nc3) 7.Bg2 e5 (7...a6 8.0-0= (8.Nc3 ab5 9.cb5) 8...ab5 9.cb5; 7...Nbd7 8.0-0 Qc8 9.Nc3) 8.d3 (8.Qc2 Qc8+= (8...Be7 9.Qf5) 9.Nc3) 8...Be7 (8...a6 9.0-0=) 9.0-0 (9.d4 e4 10.Ng5 d5=) 9...0-0 10.Nc3 Nbd7 (10...a6 11.d4 e4 12.Ng5=) 11.e4 (11.Ne5 Bg2 12.Nd7 Qd7 13.Kg2 a6+/–) 11...f4 (11...fe4 12.Ng5 Nc5 13.Nce4 Nfe4 14.Ne4 Ne4 15.Be4 Be4 16.de4=) 12.Nd5 (12.gf4 a6+=) 12...Nc5 (12...fg3 13.fg3 a6 14.a4=) 13.gf4 (13.Ne7 Qe7 14.gf4 ef4+=) 13...Nd5= 14.cd5 (14.ed5 Rf4 15.d4 ed4=) 14...Rf4 15.d4 ed4 16.Nd4 (worse is 16.Qd4 Qf8 17.Qd1 Ne4-/+) 16...Bf6 (16...a6 17.Ne2 Rh4 18.Ng3 ab5 19.Nf5+=) 17.f3 (17.Rb1 Be5= (17...Ne4?? 18.Ne6 Qe7 19.Nf4+-)) 17...Rh4 (17...a6 18.Qd2 Bg5 19.Qe2+=) 18.Qd2 Bc8 (18...a6 19.a4=) 19.f4+= Bd7 (19...Qe8 20.Rae1 Rh5 21.e5 de5 22.Nc6+=) 20.Rae1 Bd4 21.Qd4 Rg4 22.Kh1 Bb5 (22...Qh4 23.Bf3 Rg6 24.f5+/–) 23.Rg1+/– Qf6 24.Qb4?? (24.Qf6 gf6 25.h3+/– (worse is 25.Bf6 Nd3 26.Ref1 Nf4+=)) 24...Nd3-+ 25.Rgf1 (25.Qd2 Nb2 26.Rb1-+) 25...Nb4 (25...Nb2?! 26.Qb5 Qc3 27.Qe2=; worse is 25...Qb2 26.Qb2 Nb2 27.Bh3-+) 26.Bf6 Bf1 (26...Bf1 27.Rf1 gf6-+) 0–1. Borgbjerg,E (2300) – Woodward,T (2350), FSIMA August, Budapest HUN, 2006. (=1.c4 b6 2.b4 e6 3.Bb2 f5)

3.e3 Ba6 4.b5 Bb7 5.Nf3 Bf3 (5...a6!?=) 6.Qf3+= c6 (6...d5 7.c4 a6 8.cd5 ed5 9.Nc3+-) 7.c4 (7.Be2 a6+=) 7...d5 (7...a6 8.Be2+=) 8.Be2 (better 8.Nc3 Nf6 9.Rc1+-) 8...Nd7? (8...dc4 9.Na3 Ne7 10.Nc4+-) 9.cd5 (better 9.bc6!? Ndf6 10.cd5 Nd5 11.Nc3+-) 9...cd5+= 10.0-0 Be7?? (10...Ngf6 11.Rc1+=) 11.d4 (better 11.Bg7 Bf6 12.Bh8 Bh8 13.d4+-) 11...g6 (11...Ngf6 12.Rc1+=) 12.Nd2 (12.Rc1 Ngf6+-) 12...Bf6 (12...Bb4 13.Nb3+-) 13.Rac1 Rc8 (13...Ne7 14.Ba3+-) 14.Rc8 Qc8 15.Rc1 Qd8 16.e4 (16.Qg3 Be7+-) 16...Ne7 (16...Bg5 17.Rc2 Ne7 18.Ba3+-) 17.ed5 (17.Rc2 Bg7+-) 17...Nd5 18.Ne4 (18.Bc4 Bg5 19.Bd5 Bd2+-) 18...0-0 19.Nd6 (19.Bc4 Bg5 20.Re1 Be7+-) 19...Qe7 (19...Qb8 20.Qg3+=) 20.Ba3+- Bd4 (better 20...Rb8 21.Rc4 Ra8+-) 21.Nc8?? (21.Nf5 Qf6 22.Nd4 Qd4 23.Bf8 Kf8+-) 21...Qf6?? (21...Qg5 22.Na7 Ra8-/+) 22.Bf8+- Qf3? (better 22...Kf8!? 23.Na7 Qg5+-) 23.Bf3+- (23.gf3?! Nf4 24.Kf1 Kf8+-) 23...Kf8 24.Na7 (24.Rd1 Bc5 25.Bd5 ed5 26.Rd5 Nf6+-) 24...h5 (24...Nc3 25.Rc2+-) 25.Rc8 (better 25.Rd1 Bc5 26.Bd5 ed5 27.Rd5+-) 25...Ke7?? (better 25...Kg7+-) 26.Nc6 Kd6 27.Nd4 Nf4 (27...N5f6 28.Nc6+-) 28.Rc6 (28.Nc6 Nd3+-) 28...Ke5 29.Nb3 Nd5 (29...g5 30.g3 Nd5 31.Bh5+-) 30.a4 (better 30.Bd5 ed5 31.Nd2+-) 30...Kf6 (30...Nb4 31.Nd2+-) 31.a5 (better 31.Bd5 g5+-) 31...ba5 32.Na5 (32.Bd5 a4 33.Nc5 Nb8+-) 32...Ke7 (32...N5b6 33.Nc4 Nc4 34.Rc4+-) 33.Bd5 ed5 34.Rc7 (better 34.b6!? Nb6 35.Rb6 Kd7+-) 34...Kd8 35.Rb7 (35.Ra7 f6+-) 35...d4 36.Nc6 Kc8 37.Ra7 d3 38.Ne7 (38.Kf1!? g5+-) 38...Kd8 39.Nd5 d2 (39...Nc5 40.Kf1 h4 41.Rf7+-) 40.Ra8 Nb8 41.Rb8 Kd7 42.Ne3 (42.Nc3 Kc7 43.Re8 Kd7+-) 42...Kc7 43.Rf8 Kb6 44.Rb8 Kc5?? (44...Kc7 45.Re8 h4+-) 45.b6 Kc6 (45...h4 46.Kf1+-) 46.b7 (46.Kf1 d1Q 47.Nd1 g5+-) 46...Kc7 (46...f5 47.Rd8 Kb7 48.Rd2+-) 47.Rf8 Kb7 48.Rf7 Kb6 49.Rf6 Kc5 50.Rg6 Kd4 51.Rc6 (51.Rd6 Kc3 52.f4 h4+-) 51...Kd3 52.Kf1 h4 53.f4 (better 53.Rh6!? h3+-) 53...h3 (53...Ke3 54.Rd6 Kf4 55.Rd2+-) 54.g3 (better 54.Kf2 hg2 55.Rd6 Ke4 56.Ng2 Kf5+-) 54...d1Q (54...Ke3 55.Rd6 Ke4 56.Rd2 Kf5+-) 55.Nd1 Kd2 56.Rd6 (56.Nf2 Ke3 57.Rd6 Kf3 58.Rd3) 56...Kc2+- 57.f5 Kc1 (57...Kb3 58.f6 Kb4 59.f7 Kc4 60.f8Q Kb4 61.Rd5 Kb3 62.Qb8 Ka4 63.Nc3 Ka3 64.Ra5) 58.f6 Kc2 (58...Kb1 59.f7 Kc2 60.f8Q Kb3 61.Qb8 Kc4 62.Qc7 Kb4 63.Rb6 Ka4 64.Qa7) 59.Ke2 (59.f7 Kb3 60.Rc6 Kb4 61.f8Q Kb5 62.Qc5 Ka4 63.Ra6 Kb3 64.Qc3) 59...Kb3 60.Rc6 Kb4 61.Kd2 (61.f7 Kb5 62.Rc8 Ka6 63.Rb8 Ka5 64.f8Q Ka4 65.Qb4) 61...Kb5 62.Rc8 Kb6 (62...Ka4 63.f7 Kb5 64.f8Q Ka6 65.Qf6 Ka5 66.Qb2 Ka4 67.Ra8) 63.Kc3 (63.f7 Ka7 64.f8Q Kb6 65.Qf6 Ka5 66.Qb2 Ka4 67.Ra8) 63...Kb7 (63...Kb5 64.f7 Ka6 65.Rb8 Ka5 66.f8Q Ka4 67.Qb4) 64.Rc4 Kb6 (64...Ka7 65.f7 Kb8 66.f8Q Ka7 67.Qa3 Kb7 68.Qb3 Ka6 69.Ra4) 65.Nb2 (65.f7 Ka6 66.f8Q Ka7 67.Qa3 Kb7 68.Qb3 Ka6 69.Ra4) 65...Kb5 (65...Ka6 66.f7 Kb6 67.f8Q Ka7 68.Qa3 Kb7 69.Qb3 Ka6 70.Ra4) 66.Na4 (66.f7 Kb6 67.f8Q Ka7 68.Rc7 Kb6 69.Qd6 Kb5 70.Rc5) 66...Ka5 (66...Ka6 67.f7 Kb5 68.f8Q Ka6 69.Qa8 Kb5 70.Rc5) 67.Rb4 Ka6 68.Kc4 (68.f7 Ka7 69.Nc5 Ka8 70.f8Q Ka7 71.Rb7) 68...Ka5 (68...Ka7 69.f7 Ka8 70.f8Q Ka7 71.Qc5 Ka6 72.Qb6) 69.Kc5 (69.Rb7 Ka6 70.Nc5 Ka5 71.Rb5) 69...Ka6 70.Rb8 (70.Rb6 Ka5 71.f7 Ka4 72.f8Q Ka5 73.Qa8) 70...Ka7 71.Rb2 (71.f7 Kb8 72.Kb6 Kc8 73.f8Q Kd7 74.Nc5) 71...Ka6 (71...Ka8 72.f7 Ka7 73.f8Q Ka6 74.Qa8) 72.Nc3 Ka5 (72...Ka7 73.f7 Ka6 74.f8Q Ka7 75.Qe7 Ka6 76.Ra2) 73.Ra2 1–0. DEFFM – GuestGZHT, freechess.org, 2016.

3.e3 c6 4.Nf3 d6 5.Be2 e5 6.c4 f6 7.Nc3 a6 8.Qc2 g6 9.0-0 f5 10.e4 f4 11.c5! bc5 (11...bc5 12.bc5 Combination; 11...dc5 12.Ne5 Deflection) 12.bc5 dc5 (12...Nf6 13.Na4 Bg4 14.Nb6+-) 13.Ne5 Ne7 (13...Bd6 14.Nf3 Bc7+-) 14.Qb3 a5 (14...Qd4 15.Nc4 Qd8+-) 15.Qf7 1–0. b4_player – juanorte, casual, 2013.

3.e3 d5 (--> 1.b4 d5 2.Bb2 e6 3.e3 b6).

3.e3 d6 4.Nf3 e5 5.d4 e4= 6.Nfd2 d5 7.c4 c6 8.cd5 cd5 9.Nc3 Bd7 10.b5 Be6 11.a3 Ne7 12.Be2 g6? 13.Bg4 Bg4 14.Qg4 Bg7 15.0-0 Qd7 16.Rfe1?? 0-0 17.Qd7= Nd7 18.Ne2 a6 19.ba6 Ra6 20.Nf4 g5=+ 21.Nh5 f5 22.a4 Nf6 23.Nf6 Bf6=+ 24.Ba3 Rfa8 25.Be7=+ Be7 26.f3? Ra4 27.fe4?? Ra1 28.ef5 Re1 29.Kf2 Rea1 30.Nf3 R1a2 31.Kg3 Kf7 32.Ne5 Kf6 33.Nd7 Kf7 34.Nb6?? Rb8 35.Nd5 Rbb2 36.e4 h5 37.Ne3-+ Ra3 38.Kf3 Bb4 39.h3 Bd2 40.e5 Re3 41.Kf2 Rd3 42.Ke2 Rdb3 43.d5 Bf4 44.Kd1 Ra3 45.e6 Ke7 46.f6 Kf6 47.d6 Ra1# 0–1. badboy1221 – ribsnrice, Live Game Caissa's Web, 2006.

3.e3 h5 4.Nf3 h4 5.h3 Bd6? (better is 5...Nf6!? 6.a3 d5+=) 6.Bg7+- Rh7 7.Bc3 Bb7 8.Be2 a5 9.ba5 ba5 10.Bb2 c6 (10...Nc6 11.0-0+-) 11.c4 Ba6 12.Qc2 Rh6 13.c5 (better is 13.0-0+-) 13...Bc5?? (better is 13...Be2 14.Ke2 Be7+/–) 14.Qc5+- Be2 15.Ke2 Na6 16.Qc3 Nb4 17.a3 Nd5 18.Qg7 Ndf6 (18...Rg6 19.Qh8 Nde7+-) 19.Bf6 Rf6 20.Qg8 Ke7 21.Qg5 Qb6 (21...Qg8 22.Qg8 Rg8 23.Nh4+-) 22.Nc3 Qb2 (22...d5+-) 23.Rab1 Qa3 24.Ne4 d5 25.Qf6 (25.Rb7 Kf8 26.Nf6 Qe3 27.fe3 a4 28.Qg8) 25...Kd7 26.Qf7 Qe7 (26...Kd8 27.Ne5 Qd3 28.Kd3 de4 29.Ke4 a4 30.Qd7) 27.Ne5 (27.Rb7 Kc8 28.Re7 de4 29.Qf8) 27...Kd8 28.Nf6 (28.Nc6 Kc8 29.Qe7 de4 30.Qd8) 28...Ra7 (28...Qf7 29.Nf7 Ke7+-) 29.Rb8 (29.Qg8 Qf8 30.Qf8 Kc7 31.Qb8) 29...Kc7 30.Qe7 (30.Qe7 Kb8 31.Qd8 Kb7 32.Rb1 Ka6 33.Qb6) 1–0. GuestHKRL – Xali, freechess.org, 2017.

3.e4 a5 A) 4.ba5 A1) 4...ba5 5.Nc3 (5.Nf3 Nc6 6.Nc3 Nf6 7.Rb1 Rb8 8.Bc4 Bb4 9.0-0) 5...Nc6 6.Nf3 Nf6 7.Rb1 Bb4 8.Bd3 Ba6 9.Ba6; A2) 4...Nf6 5.e5 (5.ab6 Nc6 6.e5 Ne4 7.Nc3 Nc3 8.Bc3 Bc5 9.bc7) 5...Nd5 6.c4 Nb4 7.ab6 Qh4 8.d3 Bc5 9.g3; A3) 4...Ra5 5.Nc3 (5.Nf3 Nf6 6.e5 Nh5 7.Bc3 Ra4 8.d4 Nc6 9.Bb5) 5...Nc6 6.Nf3 Nf6 7.Bc4 Bb4 8.a3 Be7 9.0-0; B) 4.b5 B1) 4...Nf6 5.Nc3 (5.Bd3 Bb7 6.Nc3 a4 7.a3 Bc5 8.Nf3 d6 9.0-0) 5...Bb7 6.e5 Ne4 7.Ne4 Be4 8.Nf3 c6 9.Be2; B2) 4...Bb7 5.Nc3 (5.Bd3 Nf6 6.Nc3 a4 7.a3 Bc5 8.Nf3 d6 9.0-0) 5...Nf6 6.e5 Ne4 7.Ne4 Be4 8.Nf3 Bb4 9.Bc4; B3) 4...a4 5.Nf3 (5.Nc3 Bb7 6.Nf3 a3 7.Bc1 Nf6 8.e5 Nd5 9.Be2) 5...Bb7 6.Bd3 Nf6 7.e5 Nd5 8.0-0 Nf4 9.Na3.

3.e4 a6 A) 4.a3 A1) 4...c5 5.Nf3 (5.bc5 Nc6 6.Nf3 bc5 7.Nc3 Nf6 8.Bd3 Bd6 9.0-0) 5...Nc6 6.bc5 Nf6 7.Nc3 bc5 8.Rb1 Bd6 9.Bd3; A2) 4...Bb7 5.Nf3 (5.Nc3 Nc6 6.Nf3 Nf6 7.e5 Nh5 8.Bc4 b5 9.Be2) 5...a5 6.Nc3 Nf6 7.e5 ab4 8.ab4 Ra1 9.Qa1; A3) 4...a5 5.b5 (5.Nf3 ab4 6.ab4 Ra1 7.Ba1 Bb7 8.b5 Be4 9.Nc3) 5...Nf6 6.Nc3 Bb7 7.Bd3 d5 8.e5 Ne4 9.Nf3; B) 4.Bd3 B1) 4...Nf6 5.a3 (5.e5 Nd5 6.Nc3 Nc6 7.Nd5 ed5 8.a3 Qg5 9.Kf1) 5...Bb7 6.Nc3 Nc6 7.Nf3 Bd6 8.Qe2 Ne5 9.0-0; B2) 4...Nc6 5.a3 (5.Nf3 Nb4 6.Nc3 Bb7 7.Bc4 Nf6 8.a3 Nc6 9.0-0) 5...Nf6 6.Nf3 Be7 7.0-0 0-0 8.Nc3 d6 9.Ne2; B3) 4...Bb7 5.Nf3 (5.a3 Nf6 6.Nc3 Nc6 7.Nf3 Bd6 8.0-0 0-0 9.Qe2) 5...Nf6 6.Nc3 Bb4 7.e5 Nh5 8.g3 0-0 9.0-0; C) 4.Nc3 C1) 4...Nc6 5.a3 (5.b5 ab5 6.Bb5 Nf6 7.Nf3 Be7 8.e5 Nh5 9.0-0) 5...Nf6 6.Nf3 Be7 7.d4 d5 8.Bd3 de4 9.Ne4; C2) 4...Bb7 5.a3 (5.Nf3 Bb4 6.Bd3 Nc6 7.a3 Bd6 8.Nb5 Bf8 9.Nbd4) 5...Nc6 6.Nf3 Nf6 7.e5 Nh5 8.Bc4 b5 9.Be2; C3) 4...Bb4 5.a3 (5.Nf3 Nc6 6.a3 Be7 7.Bd3 Nf6 8.0-0 0-0 9.Qe2) 5...Be7 6.Nf3 Nc6 7.Bd3 Nf6 8.e5 Nh5 9.g3; D) 4.Nf3 D1) 4...Nc6 5.a3 (5.Nc3 Bb4 6.a3 Be7 7.Bd3 Nf6 8.e5 Nh5 9.0-0) 5...Nf6 6.Nc3 Be7 7.Bd3 0-0 8.0-0 d6 9.Ne2; D2) 4...Nh6 5.a3 (5.Bd3 Nc6 6.a3 f6 7.Nd4 Nd4 8.Bd4 a5 9.b5) 5...Bb7 6.Bd3 Nc6 7.0-0 f6 8.Nd4 Nf7 9.Qh5; D3) 4...Bb7 5.Bd3 (5.Bc4 Nf6 6.e5 Ne4 7.Nc3 Bb4 8.Ne4 Be4 9.a3) 5...Nf6 6.0-0 Bb4 7.Nc3 Nc6 8.e5 Nh5 9.g3.

3.e4 Bb4 4.a3 Bf8 5.a4 Bb7 6.Nc3 d5 7.f3 a6 8.Nge2 Bd6 9.d4? Ne7 10.Qd2 Bb4 11.e5 Nd7 12.g3 c5-+ 13.Bh3 cd4 14.Nd4 Nf8?? 15.Qd3 Nc6 16.0-0?? Bc5 17.f4? Qc7 18.Kh1?? Nd4 19.Ne2 Nc6 20.Rfd1 0-0-0 21.c3 Ne7 22.c4 dc4 23.Bg2 Rd3 24.Bb7 Qb7# 0–1. Gregor123 – chiha, mySchach.de, 2004.

3.e4 Nf6 4.e5 (4.Nf3 A) 4...Ne4 5.Bd3 (5.Nc3 Bb7 6.a3 Ng5 7.Be2 Qf6 8.Ng5 Qg5 9.Bf3) 5...Bb7 6.Nc3 Ng5 7.b5 Nf3 8.gf3 a6 9.Qe2; B) 4...Bb7 5.a3 (5.e5 Ne4 6.b5 Bc5 7.d4 Be7 8.Bd3 a6 9.0-0) 5...Be4 6.Nc3 Bg6 7.Bc4 Nc6 8.0-0 Bd6 9.Nb5; C) 4...Bb4 5.a3 (5.e5 Nh5 6.a3 Ba5 7.Nd4 Qg5 8.Qf3 Qe5 9.Be2) 5...Bc5 6.e5 Nh5 7.d4 Be7 8.Nc3 Bb7 9.Bb5; 4.Nc3 A) 4...Bb7 5.e5 (5.a3 Ne4 6.Nf3 Ng5 7.Be2 Qf6 8.Ng5 Qg5 9.Bf3) 5...Ne4 6.Qf3 Nd6 7.Qh3 Nf5 8.Bd3 Nc6 9.Nf3; B) 4...h5 5.b5 (5.Nf3 Bb4 6.e5 Bc3 7.dc3 Ne4 8.Bd3 Bb7 9.0-0) 5...Bb7 6.e5 Ne4 7.Nf3 a6 8.a4 Bc5 9.Ne4; C) 4...Bb4 5.e5 (5.Nf3 Nc6 6.Bd3 0-0 7.0-0 Ng4 8.Nb5 f6 9.Nbd4) 5...Bc3 6.dc3 Nd5 7.c4 Ne7 8.Nf3 0-0 9.Bd3; 4.b5 A) 4...Bb7 5.e5 (5.Nc3 Ne4 6.Nf3 a6 7.Ne4 Be4 8.a4 Bd6 9.d3) 5...Ne4 6.d3 Nc5 7.Nc3 Qh4 8.Nge2 Be7 9.d4; B) 4...a6 5.e5 (5.Nc3 ab5 6.Bb5 Nc6 7.Nf3 Bb4 8.e5 Nh5 9.0-0) 5...Ne4 6.Nc3 Nc3 7.Bc3 ab5 8.Bb5 Nc6 9.Nf3; C) 4...Ne4 5.Nc3 (5.Bd3 Nc5 6.Nf3 Nd3 7.cd3 a6 8.Nc3 Bb7 9.0-0) 5...Bb7 6.Nf3 a6 7.Ne4 Be4 8.Qe2 f5 9.Ne5) 4...Nd5 5.b5 (5.Nc3 Bb7 6.b5 Nc3 7.Bc3 a6 8.Nf3 ab5 9.Bb5; 5.Nf3 Bb4 6.c4 Ne7 7.a3 Ba5 8.Nc3 Ng6 9.d4) 5...c5 (better is 5...Qh4!?= 6.Nf3 Qb4 7.Bd4 Bc5 8.a3 Qa4 9.Bc5) 6.c4+/– Nf4?? (better is 6...Nc7+/– 7.Nf3 Bb7 8.Bd3 d6 9.Nc3) 7.Qf3+- 1–0. Pies,Gerhard – Seelig,Jochen, Leverkusen op, 2004.

3.e4 Nh6 A) 4.b5 A1) 4...a6 5.Nf3 (5.Nc3 ab5 6.Bb5 Nc6 7.Nf3 Bd6 8.0-0 0-0 9.d4) 5...Bb7 6.Nc3 ab5 7.Bb5 Nc6 8.0-0 Bd6 9.Bc4; A2) 4...c6 5.Nf3 (5.a4 d5 6.Bd3 a6 7.Nc3 ab5 8.ab5 Ra1 9.Qa1) 5...a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bb7 9.Nc3; A3) 4...Bb7 5.Nc3 (5.Nf3 a6 6.Nc3 ab5 7.Bb5 Nc6 8.0-0 Bd6 9.Bc4) 5...a6 6.Nf3 ab5 7.Bb5 Nc6 8.0-0 Bd6 9.Bc4; B) 4.Bc4 B1) 4...Nc6 5.Nf3 (5.b5 Na5 6.Bd3 a6 7.a4 Qg5 8.Nf3 Qh5 9.0-0) 5...Ng4 6.h3 Nf6 7.b5 Na5 8.Bd3 a6 9.e5; B2) 4...Bb7 5.Nf3 (5.Nc3 Nc6 6.Nf3 Bb4 7.a3 Bd6 8.Nb5 0-0 9.0-0) 5...Be4 6.0-0 Nc6 7.Re1 Bf3 8.Qf3 Nb4 9.Bb3; B3) 4...Qe7 5.Bc3 (5.a3 a5 6.b5 f5 7.ef5 Nf5 8.Nf3 d5 9.Bd3) 5...Nc6 6.Nf3 d5 7.b5 Qc5 8.Qe2 dc4 9.bc6; C) 4.Nc3 Bb4 5.Qh5 (5.a3 Be7 6.Qh5 0-0 7.Nf3 f5 8.Bd3 Na6 9.Na4) 5...Ng8 6.e5 Nc6 7.Ne4 Nge7 8.Nf3 h6 9.a3; D) 4.Nf3 D1) 4...a6 5.a3 (5.Bd3 Nc6 6.a3 f6 7.0-0 Bd6 8.Nd4 0-0 9.Nc6) 5...Nc6 6.Be2 f6 7.d4 Bd6 8.0-0 0-0 9.Nbd2; D2) 4...Na6 5.a3 (5.Bc4 Nb4 6.0-0 Bb7 7.Nc3 Be7 8.a3 Nc6 9.d4) 5...Bb7 6.Bd3 c5 7.Qe2 Nc7 8.0-0 Ng4 9.h3; D3) 4...Bb7 5.Bd3 (5.b5 a6 6.Nc3 ab5 7.Bb5 Nc6 8.0-0 Bd6 9.Bc4) 5...Nc6 6.a3 f6 7.b5 Na5 8.Nc3 Bd6 9.0-0.

3.f3 Ba6 4.e4 Nf6 (4...Bf1 5.Kf1 Nf6 6.a3+=) 5.Ba6 Na6 6.b5 Nc5 7.Nc3 d5 8.d4 Nb7 9.Nge2 de4 10.fe4 Nh5 (10...a6!? 11.a4 Ng4=) 11.0-0+/– e5 (better is 11...Nf6!?+/–) 12.Rf5+- g6? (better is 12...Nf6 13.Re5 Be7+-) 13.Re5 Be7 (13...Kd7 14.Rd5 Nd6+-) 14.Nd5 0-0 15.Re7 c6 (15...Nd6 16.Qd3 a6 17.Rc7+-) 16.bc6 (16.bc6 Na5 17.Rd7+-) 1–0. pierre – tyrg, internet, 2011.

3.f3 Qh4 4.g3 Qb4 5.Bc3 Qe7 6.e4 Nf6 7.d3 Nc6 8.Ne2 Ba6 9.Bg2 h5 10.0-0 h4 11.Nf4 Qc5 12.d4 (better is 12.Rf2-+) 12...hg3 13.hg3 (13.dc5?? Bc5 14.Bd4 Bd4 15.Qd4 Nd4-+) 13...Qg5 14.Kf2 Bf1 15.Qf1 e5 16.de5 Bc5 17.Ke2 Ne5 18.Nd2 (18.Kd1-+) 18...Nh5 19.Be5 (19.Nh5 Qe3 20.Kd1 Qc3 21.Ng7 Kf8 22.Rb1 Kg7 23.Qe2-+) 19...Ng3 (19...Ng3 20.Kd3 Qe5-+) 0–1. dariuscyclone (2000) – pierred (2765), net–chess.com, 2011.

3.Nf3 Ba6 4.a4 c6 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+-) 5.Na3 Nf6 (5...Bb4?? 6.Bg7 f6 7.Bh8+-) 6.b5 Bb7 (6...Ba3 7.Ra3 cb5 8.g4+=) 7.Nc4 Ne4 8.e3 a6 9.Bd3 cb5 10.ab5 a5 (better is 10...ab5 11.Ra8 Ba8=) 11.Be4+/– Be4 12.Bd4 Bc5?? (better is 12...a4+/–) 13.Bc5+- bc5 14.Nd6 Ke7 15.Ne4 Qc7 16.Qb1 d5 (16...d6 17.Qb2 Kf8 18.0-0+-) 17.b6 Qb7 18.Nc5 Qc6 19.Na4 Nd7 20.Nd4 Qb7 21.Qb5 Rhc8 22.0-0 g6 (22...h6 23.Rfb1+-) 23.f4 f5 (23...Kd8 24.c3+-) 24.Rf3 Ra6 25.Rh3 h5 26.Rb1 Nc5 (26...Raa8+-) 27.Nc5 Rc5 28.Qc5 (28.Qc5 Kf7 29.Qc7 Qc7 30.bc7+-) 1–0. pierre – Pahan, internet, 2011.

3.Nf3 Na6 4.a3 c5 5.b5 (5.bc5 Nc5 6.d4 Na4=) 5...Nc7= 6.e4 d5 7.ed5 Nd5 (7...ed5 8.Be2=) 8.Nc3 (8.Be2 Ngf6=) 8...Nc3 (8...Ngf6 9.Nd5 Qd5 10.Qe2=) 9.Bc3 Bb7 10.Bd3 Nf6 11.0-0 Bd6 12.Qe2 Qc7 (12...Nd5 13.Be5=) 13.g3 (13.Bf6 gf6 14.Be4=) 13...a6 (better is 13...0-0!? 14.Bf6 gf6=) 14.ba6+/– Bf3 (14...Bc6 15.Ne5 Bd5 16.Nc4+/–) 15.Qf3 0-0 16.Bf6 gf6 17.Rfe1 (17.Rab1+/–) 17...c4? (better is 17...f5!? 18.Bc4 Rfd8+/–) 18.Re4 (better is 18.Qg4 Kh8 19.Qc4+-) 18...cd3?? (better is 18...f5 19.Rc4 Qd7+-) 19.Rg4 Kh8 20.Qf6 1–0. pierre – dezem, internet, 2009.

3.Nf3 d6 (--> 2.Bb2 d6 3.Nf3 b6).

3.Nf3 f6 4.b5 d5 5.e3 Bb7 6.Be2 c5 7.0-0 e5 8.c4 d4 9.ed4 cd4 10.d3 Bc5 11.Nfd2 Nd7 12.Bh5 g6 13.Bf3 Bf3 14.Nf3 Ne7 15.Nbd2 Nf8 16.Ne4 Nd7 17.Nfd2 Qc7 18.Qf3 f5?? 19.Ng5 Rc8+= 20.Ne6 Qd6 21.Ng7?? Kf7 22.Nh5 gh5-+ 23.Qh5 Qg6 24.Qf3 Qe6 25.Ne4 Rhg8 26.Qh5 Qg6 27.Qg6 Ng6 28.Nc5 Nc5 29.Rad1 Nf4 30.g3 Nfd3 31.Bc1 e4 32.Kh1 Ne5 33.f4 Nf3 34.Kg2 Rcd8 35.Ba3 Ne6 36.Bb2 d3 37.Be5 Ned4 38.a4 Rc8 39.a5 Rc4 40.ab6 ab6 41.Ra1 Rc2 42.Rf2 d2 43.Ra7 Kg6 44.Bd4 Nd4 45.Rd2 Rd2 46.Kf1 e3 47.Ke1 Nf3 48.Kf1 Rd1 49.Ke2-+ Rgd8 50.Ke3 R8d3 51.Ke2 Nh2 52.Rg7 Kg7 53.g4 R1d2 (54.Ke1 Nf3 55.Kf1 Re3 56.gf5 Re1#) 0–1. GULP – grigoropoulo3, caissa.com, 2004.

3.Nf3 h6 4.e3 a6 5.a3 Bb7 6.Be2 d6 7.0-0 Nd7 8.d3 Rh7 (8...Ngf6 9.c4+=) 9.c4 a5 (9...Ngf6 10.d4+=) 10.d4+/– Ne7 (10...ab4 11.ab4 Ra1 12.Ba1+/–) 11.Nc3 g6 12.b5 Bg7 13.e4 e5 14.de5 Ne5 15.Nd4 Nd7 16.Nd5 Nd5 (16...Nc5 17.Qc2+/–) 17.cd5 Qe7 18.Bd3 Nc5 19.Qc2 (19.Rc1 Be5+/–) 19...Be5 (19...0-0-0 20.Rae1+/–) 20.f4 Bd4 (20...Bg7 21.Rae1 0-0-0 22.Qc4+/–) 21.Bd4+- 0-0-0 22.Bc5 (22.Rac1 Re8+-) 22...dc5+/– 23.Rac1 f6 (23...Rg7 24.Rfd1+/–) 24.f5 (24.Kh1 Kb8+/–) 24...g5 25.Qe2 Kb8 26.Rc4 Bc8 27.Rfc1 (27.Qb2 Re8+/–) 27...Rhh8 (27...Bd7 28.R4c3+/–) 28.Qc2 Rd6 (28...Rhe8 29.Kh1+/–) 29.Rc3 (29.Qb3 Re8 30.R1c2 Bf5 31.ef5 Qe3 32.Rf2 Rd5+=) 29...Re8 30.Qd1 Qf7 (30...Qe5 31.Qf3+/–) 31.Rc4 (31.Qa4 Re5+/–) 31...Bd7 32.Qa4 Re5 33.R4c2 Kb7 (33...Qh5 34.Qc4+/–) 34.Rc3 Re8 (34...Qh5 35.Qc4+/–) 35.Rc4 (35.Kh1 Qh5+/–) 35...Re5 36.Kh1 Qh7 37.Qb3 h5 38.Kg1 (38.Qa4 Qe7 39.R4c2 h4+/–) 38...h4 39.Qa4 h3 40.g3 Qh5 41.Rf1 Qg4 42.Kf2 Be8?? (better is 42...Qh5+/–) 43.Be2+- Qe2 (43...Rf5 44.ef5 Qf5 45.Kg1+-) 44.Ke2 Bh5 (44...Rdd5 45.Re1 Rd8+-) 45.Kf2 Bf7 (45...Rd7 46.Rfc1+-) 46.Kg1 (46.g4 Rd8+-) 46...Rd7 (46...Bh5 47.Qc2+-) 47.g4 Rde7 48.Rf3 Re8 49.Rd3 Rd8 (49...Rh8 50.Qb3+-) 50.Rh3 Rd6 51.Rh7 Re7 52.Rh8 Be8 53.Rf8 Kc8 (53...Bd7 54.Kg2+-) 54.Qc2 Kd7 (54...Kb7 55.Qb2 Bf7 56.Rh8+-) 55.Qb2 Bf7 (55...Bf7 56.h4! gh4+-). market (2240) – mirage (1660), GameColony.com, 2002.

3.h4 Bb7 4.h5 Be7 5.Bg7 Bf6 6.Bh8 Bh8 7.c3 d5 8.h6 Nd7 9.Qc2 c5 10.Qh7 Ndf6 11.Qh8 Qe7 12.h7 0-0-0 13.Qg7 Nh7 14.Rh7 cb4 15.Rh8 f6 16.Qg4 Qf7 17.Rh3 Ne7 18.cb4 d4 19.a3 Rg8 20.Qd4 Bg2 21.Qc4 Kb7 22.Bg2 Rg2 23.Qe4 Nd5 24.Qg2 Kc7 25.Qh2 Kd7 26.Rh7 Qh7 27.Qh7 Kd6 28.Nc3 Nc3 29.dc3 a5 30.ba5 ba5 31.Rd1 Ke5 32.Qh5 f5 33.Nf3 Ke4 34.Qh4 f4 35.Rd4 Kf5 36.Qh7 Kg4 37.Qg7 1–0. FelixMart – axtur777 , lichess.org, 2019.

(--> 1.b4 b6 2.Bb2 Bb7 3.a3 e6).

4.e3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7).

4.e3 Nf6 5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7).

4.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.a3).

4.Nf3 f6 5.e3 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 f6 4.Nf3 e5 5.a3).

(--> 1.b4 b6 2.Bb2 Bb7 3.a4 e6).

4.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.a4).

4.b5 c5 5.Nf3 f5 6.e3 Qd7?? 7.Ne5+- Qd6 8.Qh5 g6 9.Ng6! e5 10.Nh8 Kd8 11.Nf7 Ke7 12.Nd6 Kd6 13.Qf7 c4 1–0. guest449 – maanjongen, ICC, 2003.

4.g3 c5 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+-) 5.bc5 Bc5?? (better is 5...bc5 6.Bg2 Nc6=) 6.Bg7+- f6 (6...Bd4 7.Bd4 Nf6 8.e3+-) 7.e3 Qe7 8.Bh8 Qf7 9.a5 b5 (9...ba5 10.d4 Bb4 11.c3+-) 10.Bb5 Bd7 11.Nc3 Nc6 12.Rb1 0-0-0 (12...Na5 13.Ba6 Nh6+-) 13.Ba6 Kc7 14.Nb5 Kb8 15.Nd6 Ka8 16.Bb7 Kb8 17.Nf7 Nb4 18.Nd8 Kc7 19.Qg4 Kd8 20.Qg8 Kc7 21.Qh7 Kb7 22.Qd7 Ka6 23.d4 (23.c3 Nc2 24.Ke2 Bb6 25.ab6 ab6 26.Qb5 Kb7 27.Qb6 Kc8 28.Qc6 Kd8 29.Bf6) 23...Ka5 (23...Be7 24.Qe7 Kb5 25.Qb7 Ka5 26.Qb4 Ka6 27.Qb5) 24.Ra1 Kb6 (24...Na2 25.Ra2 Kb6 26.Rb2 Bb4 27.Rb4 Ka5 28.Qb5) 25.Qa7 Kb5 (25...Kc6 26.Qc5 Kd7 27.Ra7 Ke8 28.Qe7) 26.Qc5 1–0. Janek – wpis, internet, 2016.

4.b5 a6 (4...d5 5.Nf3= (5.e3 Nbd7 6.Nf3 Bd6 7.Nc3 0-0 8.Be2 Nc5 9.0-0) 5...Nbd7 6.Nc3 Bd6 7.g3 Bb7 8.Nd4 Ne5 9.e3; 4...Bc5 5.Nf3 (5.e3 0-0 6.Nf3 d6 7.d4 Bb4 8.Nbd2 d5 9.Bd3) 5...d5 6.e3 Nbd7 7.Bd3 0-0 8.0-0 Qe7 9.Nc3; 4...Bb7 5.Nf3 (5.Nc3 Bb4 6.Nf3 0-0 7.g3 d5 8.Bg2 Qd6 9.0-0; 5.e3 d5 6.Nc3 Nbd7 7.Nf3 Bb4 8.Be2 0-0 9.0-0) 5...Bb4 6.Nc3 0-0 7.e3 d5 8.Bd3 Nbd7 9.Nd4; 4...Bd6 5.Nf3 (5.Nc3 0-0 6.Nf3 Bb7 7.e3 Ng4 8.Be2 a5 9.h3; 5.e3 0-0 6.Nc3 Bb7 7.Nf3 a6 8.Bd3 Qe7 9.a5; 5.Na3 0-0 6.Nf3 Bc5 7.e3 d5 8.Bd3 Bb7 9.Ne5) 5...Bb7 6.Nc3 0-0 7.e3 Ng4 8.Bc4 a6 9.h3; 4...a5 5.Nf3 (5.Nc3 d5 6.e3 Nbd7 7.Nf3 Nc5 8.Nd4 Bd6 9.Bd3; 5.e3 d5 6.Nf3 Bd6 7.Bd3 Nbd7 8.Nd4 Ne5 9.Nc3) 5...d5 6.c4 Bb4 7.cd5 ed5 8.g3 0-0 9.Bg2) 5.Nf3 (5.Nc3 d5= (5...Bb7 6.Nf3 Bd6 7.e3 0-0 8.Bd3 Qe7 9.a5) 6.e3 Bd6 7.Nf3 0-0 8.a5 ba5 9.Ra5) 5...h6 (5...ab5 6.ab5 Ra1 7.Ba1= d5 8.e3 Nbd7 9.Nd4) 6.e3 (6.Nc3 d5= (6...Bb7 7.e3 Bd6 8.Be2 0-0 9.0-0) 7.e3 Bd6 8.a5 0-0 9.ab6) 6...Bb7 (6...ab5 7.ab5 Ra1 8.Ba1= Bb7 9.Bd3) 7.Be2 (7.Nc3 d5+= (7...Bd6 8.Be2 0-0 9.0-0) 8.a5 c6 9.ba6) 7...Bd6 (7...ab5 8.ab5 Ra1 9.Ba1=) 8.0-0 (8.Nc3 0-0+= 9.0-0) 8...c6 (8...ab5!? 9.ab5 Ra1 10.Ba1 Ng4+=) 9.Na3+/– 0-0 10.c4 (10.Nc4 Bc7+=) 10...Ba3 (10...Qe7 11.Bd3=) 11.Ra3+= d6 12.ba6 (12.Qb1 c5+=) 12...Na6+= 13.Bf6 (13.Qb3 Nc5 14.Bf6 gf6+=) 13...Qf6= 14.Qb1 Qd8 (14...Qe7 15.Rb3+=) 15.Rb3 Nc5 (15...b5 16.ab5 Nc5 17.Rb4+=) 16.Rb6+/– Qe7?? (better is 16...Ba6+/–) 17.d4+- Na4 (17...Rfb8 18.dc5 dc5 19.Qb3+-) 18.Rb7 Qd8 (18...Qe8 19.Qc2 c5 20.d5+-) 19.Qc2 c5 (19...Ra5 20.Rfb1 c5 21.Bd3+-) 20.Bd3 (better is 20.Ra1 Qc8 21.Rb5+- (21.Ra4?! Qb7 22.dc5 Ra4 23.Qa4 dc5+-)) 20...f6 (20...Qc8 21.Rb5 cd4 22.ed4 Qc7+-) 21.Bh7 Kh8 22.Qg6 (22.Qg6 Rg8 23.Bg8 Qg8 24.Ra1+-) 1–0. marekt – Stallan, ChessWorld.net, 2003.

4.e3 Be7 5.b5 0-0 6.Be2 Bb7 7.Nf3 c6 8.0-0 cb5 (8...a6 9.Nc3=) 9.ab5 d5 10.c4 (10.Bd4 Qc7=) 10...Nbd7 11.d4 dc4 12.Bc4 Bd5 13.Nbd2 Bb4 14.Bd3 Ba5 15.Ba3 Re8 16.Rc1 Qb8 17.e4 Bb7 18.e5 Nd5 19.Nc4 (19.Ng5 g6 20.Nc4 Bb4 21.Bb4 Nb4+-) 19...Bb4 20.Bb4 Nb4 21.Nd6 Rf8 (better is 21...Nd3 22.Qd3 Re7+/–) 22.Bh7! Kh8? (22...Kh7 23.Ng5 Double attack) 23.Ng5 (23.Nb7 Qb7 24.Ng5 g6+-) 23...g6 24.Ndf7 Rf7 (24...Kg7 25.Nd6 Bd5 26.Qg4+-) 25.Bg6 Rg7 (25...Rf3 26.Nf3 Qd8+-) 26.Qh5 Kg8 27.Bf7 Kf8 28.Ne6 Ke7 29.Ng7 Qf8 30.Nf5 Kd8 31.Qg5 Nf6 32.Qf6 Kd7 (32...Qe7 33.Qe7) 33.e6 1–0. DEFFM – troubadour, freechess.org, 2018.

4.a4 a5 5.e3 (---> 1.b4 a5 2 b5 b6 3.a4 Bb7 4.Bb2 e6 5.e3).

4.a4 ab5 5.ab5 Ra1 6.Ba1 Bb7 7.e3 f5 8.Nf3 Nf6 9.d3 Bb4 10.Nbd2 0-0 11.Be2 d6 12.0-0 Bd2 13.Nd2 Nbd7 14.Bf3 Qa8 15.Bb7 Qb7 16.Bb2 Ra8 17.Qb1 e5 18.c4 Nc5 19.d4 Nce4 20.Ne4 Ne4 21.de5 Nd2 22.Qf5 Nf1 23.Qe6 (better 23.e6!? c6 24.bc6+-) 23...Kh8= 24.Kf1 (24.ed6!? Ne3 25.fe3 cd6 26.Qd6+=) 24...Qe4-/+ 25.Bd4 de5 26.Be5?? (26.Qe5 Qb1 27.Ke2 Qc2 28.Ke1 Qc1 29.Ke2 Qc4 30.Kf3 Qf7 31.Kg3 Rd8-/+) 26...Qd3 (better 26...Ra1! 27.Ba1 Qe6-+) 27.Ke1=+ Rd8 (27...Rf8 28.Bc7 Qb1 29.Kd2 Rf2 30.Kc3 Qa1 31.Kd3 Qf1 32.Kd4=+) 28.Bd4= Qg6?? (28...Qb1 29.Ke2 Qc2 30.Ke1=) 29.Qe7?? (better 29.Qg6 hg6 30.Be5+-) 29...Rc8 30.h4 h5 31.Kf1 Kh7 32.g3 Qg4 (32...c5 33.bc6 Rc6 34.Qg5=) 33.Kg2 c5 34.bc6 Rc6 35.f3 Qg6 36.e4 (better 36.Qg5=) 36...b5?? (better 36...Rc4 37.Qe5 b5-/+) 37.c5 (better 37.cb5!? Rc2 38.Kh3+-) 37...Ra6+= 38.Kh3 (38.Qd7!?+=) 38...Ra3= 39.c6 (39.Kg2 Ra2 40.Bf2 Re2+=) 39...Rf3 40.Be5?? (better 40.Qg5=) 40...Qg4-+ 41.Kg2 Re3 42.Bf4 (42.Qg7 Qg7 43.Bg7 Kg7 44.c7-+) 42...Re2 (42...Qf3 43.Kh2 Re2 44.Kg1 Qg2) 43.Kg1 Re1 44.Kh2 (44.Kg2 Qe2 45.Kh3 Rh1) 44…Qe2 (44...Qe2 45.Kh3 Rh1) 0-1. bjoernsen (2460) - sibupk (2425), Rated blitz game, lichess.org, 2021.

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 Qg5 9.e3 Nf6 10.Nf3 Qf5 11.Nc3 Ng4 (11...Bb7!?=) 12.Na4 (better 12.Qa4+-) 12...Ne5?? (better 12...Bb7+-) 13.Ne5 f6 14.Bd3 (14.Nf3 Bc5+-) 14...Qg5 15.Qc2 Bb7 16.Qc7 Qg2 17.Qc8 (better 17.Qb8 Ke7 18.Rf1 fe5 19.Nb6+-) 17...Ke7 (better 17...Bc8 18.Rf1 fe5 19.Nb6 e4-+) 18.Nc6= Nc6 (better 18...Bc6!? 19.Rf1 Be4=+) 19.Qb7+= Qh1 20.Bf1 Na5?? (better 20...Qe4 21.bc6 Qc6 22.Qc6 dc6 23.Nb6 Kd8+-) 21.Qh1+- Nb3 (21...d5 22.Bd4+-) 22.Bc3 Kf7 23.Nb6 Nc5 (23...d5 24.Nd5! Bd6 25.Qf3+-) 24.d4 Ne4 25.Qe4 d5 26.Nd5! ed5 27.Qd5 Kg6 28.Bd3 (28.Be2 f5 29.Qc6 Bd6 30.Qd6 Kf7 31.Bc4 Ke8 32.Qe6 Kd8 33.Ba5) 28...f5 29.Qf5 Kh6 30.e4 (30.d5 Bd6 31.Qg4 Bh2 32.Bg7) 30...g6 (30...Bd6 31.Bd2 Bf4 32.Bf4 g5 33.Qg5) 31.Bd2 Kg7 32.Qe5 Kg8 (32...Kf7 33.Bc4) 33.Bc4 1–0. DEFFM – malouda, freechess.org, 2019.

4.a4 ab5 5.ab5 Ra1 6.Ba1 d5 7.e3 Nd7 8.Nf3 Ngf6 9.Be2 Bd6 10.0-0 0-0 11.c4 Re8 12.d4 Ne4 13.Nbd2 Ndf6 14.Bb2 Bb7 15.Qc2 Nd2 16.Nd2 c6? (16...Qe7!?=) 17.c5 (17.bc6 Bc6 18.cd5 Bb7 (18...Bd5? 19.e4+-) 19.de6 Re6+/-) 17...bc5 18.dc5 Be7 (18...Bf8 19.Ra1+/-) 19.Ra1+- cb5 20.Bb5 Rf8 21.c6 Bc8 22.Ra7 White plans c7 (22.c7 Qd6+-) 22...Bd6 23.c7 Qe7 24.Nb3 (24.Nf3 Ne8+/-) 24...Ne4 (24...Ne8 25.Be8 Re8 26.Nd4+/-) 25.Bd3 f5 26.Bd4 Qh4 27.g3 Ng3?? (better 27...Qh6+/-) 28.hg3+- Bg3 (28...Qg5+-) 29.fg3 Qg3 30.Qg2 Qe1 (30...Qg2 31.Kg2 Kf7 32.Na5+-) 31.Bf1 f4 (31...g6 32.Qg5 e5+-) 32.Qg7 1-0. DEFFM – GuestKXGN, freechess.org, 2021.

4.e4 ab5 5.Bb5 Bc5?? (better is 5...Bb7=) 6.Bg7+- Bf2 (6...Qg5 7.Bh8 Qg2 8.Qf3 Bf2 9.Ke2+-) 7.Kf2 Qh4 8.g3 (better is 8.Kf1 Qg5 9.Bd7 Nd7 10.Bh8 Qg6+-) 8...Qe4 (8...Qg5 9.Bd7! Nd7 10.Bh8+-) 9.Qf3 (better is 9.Nf3+-) 9...Qc2 (9...Bb7 10.Bh8 Bd5 11.Qe4 Be4+-) 10.Qa8 Qd2 11.Nd2 (11.Nd2 Ne7 12.Bh8+-) 1–0. pierre – colly, internet, 2011.

4.a4 d5 5.e3 a6 6.Nf3 Ne7 7.Be2 ab5 8.ab5 Ra1 9.Ba1 c6 10.c4 cb5 11.cb5 Nd7 12.d4 Qc7 13.Nbd2 Nf5 14.0-0 Bb4 15.Qb3 Ba5 16.Bb2 0-0 17.Rc1 Qd6? 18.Ba3+- Qb8 19.Bb4?? Bb4+= 20.Qb4 Rc8 21.g4?? Nh6 22.Rc8+= Qc8 23.h3 Qc7 24.Kg2 f5? 25.Qe7+/– fg4?? 26.hg4 Nf8?? 27.Qc7 1–0. blackiwhite (1645) – delugens (1750), kurnik, 2011.

4.a4 Nf6 5.c4 Be7 6.e3 0-0 7.Nf3 d5 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0 8.a4).

4.a4 Nf6 5.Nf3 d5 6.d4 Ne4 7.c4? Bb4-+ 8.Nbd2 g5?? 9.e3?? g4-+ 10.Ne5?! Nd2 11.Qg4 Nc4 12.Ke2 Nb2 13.Nf7 Kf7 14.Qh5 Ke7 15.Qg5 Kd7 16.Qg7 Be7 17.Kf3 Nc4 18.Bc4 dc4 19.e4 Rg8 20.Qe5 Qf8 21.Ke3 Rg2 22.Rhf1 Bg5 23.f4 Bf6 24.Qh5 Qb4 25.Qh7 Be7 26.Rad1 Qc3 (26...Qc3 27.Rd3 Qd3) 0–1. iczker – logika7, kurnik, 2011.

4.a4 g6?? 5.e3 f6 6.Nf3 Bg7 7.Nh4 Ne7 8.Nf3 d6 9.Be2 Nd7 10.0-0 Nc5 11.Nc3 e5 12.d4 Ne6 13.de5 de5 14.Qd8 Rd8 15.Rfd1 0-0 16.Rd8 Rd8 17.Rd1 Rd1 18.Nd1 Nc5 19.Nc3 Bf3 20.Bf3 Nf5 21.Ba3 Bf8 22.Bc5 Bc5 23.Nd5 Bd6 24.Nf6 Kg7 25.Ne4 Bb4 26.Ng5 Bd6 27.Ne4 h6?? 28.Kf1 g5 29.Bg4 Nh4 30.g3 Ng6 31.Bf5 Ne7 32.Be6 Ng8 33.Ke2 Nf6 34.Nf6 Kf6 35.Bb3 h5 36.Kf3 Bb4 37.Ke4 Be1 38.f3 Bf2 39.g4 hg4 40.fg4 Be1 41.h3 Bg3 42.Kf3 Be1 43.e4 Bb4 44.Bd5 Ke7 45.c4 Bd2 46.Kg3 Be1 47.Kg2 Kd6 48.Kf3 Kc5 49.h4 gh4? 50.g5+- Bd2 51.g6 Bh6 52.Kg4 h3 53.Kh3 Bg7 54.Kg4 Kb4? 55.Kf5 Ka4 56.Ke6 Kb4 57.Kf7 Bh6 58.g7 Bg7 59.Kg7 Kc3 60.Kf6 Kd4 61.Ke6 Ke3 62.Ke5 Kf3 63.Kf5 Kg3 64.e5 Kf2 65.e6 Ke3 66.e7 Kd3 67.Kf6 Kd4 68.Kf7 Kc5 69.e8Q Kb4 70.Qc6 a5 71.Qc7 (71.Qc7 Kb3 72.c5 Kc2 73.cb6 Kb2 74.b7 Kb1 75.Qc3 a4 76.Be4 Ka2 77.b8Q a3 78.Qh2) 1–0. j1a9n55 – zacier, kurnik, 2011.

4.e3 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.b5).

4.e3 f5 5.Nf3 Nf6 6.Be2 Be7 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 b6 6.Be2 Bb7).

4.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.b5).

4.Nf3 Nf6 5.e3 (--> 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3).

4.e3 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3).

4.e3 Bb7 5.c4 Be7 6.Nf3 0-0 7.Be2 d5 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 d5 7.Be2 0-0).

4.a4 c6 5.Nc3 a6 6.Nf3 Qf5 7.e4 Qf6 8.a5 ab5 9.Na4 ba4 (better is 9...Qd8 10.Nb6 Ra7+/–) 10.Bf6 a3 (10...Nf6 11.e5 Ne4+-) 11.Bc3 b5 12.Ng5 h6 (12...Nh6 13.Rb1+-) 13.Qh5 g6 14.Qf3 (14.Bh8?! gh5 15.Nh7 Bc5+=) 14...b4 (14...hg5 15.Bh8 Na6+-) 15.Qf7 Kd8 16.Qf8 Kc7 17.Be5 d6 (17...Kb7 18.Qb4 Ka7 19.Qb6) 18.Qd6 Kb7 19.Qc7 1–0. pierred – kevin_alden, Yahoo, 2005.

4.e3 d5 5.Nf3 Qe7 6.Bd3 c6 7.a4 cb5 (7...a6 8.0-0+=) 8.ab5+/- Qd7 9.Ne5 (better 9.Ng5 f5 10.0-0+/-) 9...Qd6?? (better 9...Qc7+=) 10.Nf7!+- Kf7 11.Qh5 Ke7 (11...g6 12.Qf3 Ke8 13.Bh8+-) 12.Ba3 Qa3 13.Na3 g6 (13...Nf6 14.Qe5+-) 14.Qe5 Bd7 (14...Nf6 15.Qc7 Nbd7+-) 15.Qh8 (15.Qh8 Nf6 16.e4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

(--> 1.b4 b6 2.Bb2 Bb7 3.c4 e6).

4.e3 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.c4).

4.e3 f5 5.Nf3 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

4.e3 Nf6 5.b5 Be7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4).

4.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.c4).

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.c4).

4.Qa4 A) 4...a6 5.Nc3 (5.a3 Nc6 6.Nf3 Bd6 7.Nc3 Bb7 8.d4 a5 9.b5) 5...Bb7 6.Nf3 Nc6 7.a3 Bd6 8.d4 a5 9.b5; B) 4...Na6 5.a3 (5.Nf3 Bb4 6.Nc3 0-0 7.Ne5 Bb7 8.f3 Ba5 9.Nd3) 5...c5 6.b5 Nc7 7.Nf3 Bb7 8.Nc3 Bd6 9.e3; C) 4...Bb7 5.Nf3 (5.Nc3 a6 6.Nf3 Nc6 7.a3 Bd6 8.d4 a5 9.b5) 5...Bd6 6.d4 0-0 7.Nbd2 Nc6 8.c5 Be7 9.b5.

4.Qb3 A) 4...d5 5.Nf3 (5.Nc3 a5 6.ba5 dc4 7.Qb5 Bd7 8.Qc4 Ra5 9.Nf3) 5...Nc6 6.Qa4 Bd7 7.b5 Na5 8.cd5 ed5 9.Ne5; B) 4...a6 5.b5 (5.Nf3 Nc6 6.a3 Bd6 7.Nc3 Qe7 8.e3 0-0 9.Bd3) 5...d5 6.Nf3 Nbd7 7.cd5 Nd5 8.Na3 Nc5 9.Qc2; C) 4...Nc6 5.b5 (5.a3 Be7 6.Nf3 Bb7 7.Nc3 0-0 8.e3 a5 9.b5) 5...Na5 6.Qd3 Bb7 7.Nf3 Bc5 8.Nc3 0-0 9.e3.

4.b5 a6 5.Nc3 (5.Nf3 ab5 6.cb5 Bb7 7.Nc3 d5 8.h3 Bd6 9.e3) 5...Bb7 6.Nf3 ab5 7.cb5 d5 8.g3 d4 9.Na4.

4.b5 Bb7 5.Nc3 a6 6.e3 ab5 7.cb5 c5 8.Nf3 d5 9.Bd3.

4.b5 Bb7 5.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.c4).

4.b5 Bb7 5.Nf3 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.Nf3 Bb7 5.c4).

4.b5 Be7 5.Nc3 (5.Nf3 d6 6.g3 Nbd7 7.Bg2 Bb7 8.0-0 0-0 9.Nc3) 5...d6 6.Nf3 Nbd7 7.e3 0-0 8.Be2 Bb7 9.0-0.

4.b5 a4 5.c4 Bd6?? (better is 5...a3 6.Bc3 Nf6=) 6.Bg7+- f6 (6...Be5 7.Be5 f6 8.Qh5 Ke7 9.Qg4+-) 7.Bh8 Qe7 8.Qh5 (8.Nc3 Bb7+-) 8...Qf7 9.Be2 Qh5 (9...Bb7 10.Qf7 Kf7 11.Bh5 Ke7 12.Bf3 Bf3 13.Nf3+-) 10.Bh5 Kf8 11.Nf3 (11.Bf3 Ra7+-) 11...Be7 12.0-0 (better is 12.e4 Bb7 13.d3 Nh6+-) 12...Nh6 13.Nc3 (13.g4!? Nf7 14.Bf7 Kf7+-) 13...Kg8 14.Bf6! Bf6 15.g4 (15.d4 Nf5+-) 15...Bb7 16.g5 Bc3 17.dc3 (17.gh6?! Ba1 18.Ra1 Ra5+-) 17...Nf5 18.Ne5 White intends g6 18...Nd6 (18...Nh4 19.c5! bc5 20.Rad1+-) 19.f4 a3 (19...Ne4 20.Bf3+-) 20.g6 (20.Rad1 Kf8+-) 20...hg6 21.Ng6 (better is 21.Bg6!? Ne4+-) 21...Nc4 22.f5 ef5 23.Rf5 Be4 (23...Kh7 24.Ne7 Nd6 25.Rg5+-) 24.Ne7 Kg7 25.Rf4 Bd3 (25...Nd6+-) 26.Kf2 Ra5 (26...Nc6 27.Rg1 Kh8 28.bc6 Bh7 29.Ng6 Bg6 30.Bg6 Rg8 31.cd7 Nd6 32.Bd3 Ne4 33.Be4 Rg1 34.d8Q Rg8 35.Qd4 Rg7 36.Rf8) 27.Rg1 Kh6 (27...Kh7 28.Bg6 Kh6 29.Ng8 Kg7 30.Bd3 Kh8 31.Rh4) 28.Bf3 Rb5 (28...Bg6 29.Rg6 Kh7 30.Rh4) 29.Rh4 Rh5 30.Rh5 1–0. GuestQWHV – GuestJMLH, freechess.org, 2017.

4.b5 Bb7 5.Nf3=.

4.b5 c6 5.c4 (5.Nc3 Nf6=) 5...cb5 (5...Nf6 6.Nc3=) 6.cb5 (6.Qf3 Ra7 7.Qg3 d6 8.Bg7 Bg7 9.Qg7 Qf6 10.Qf6 Nf6 11.cb5 Rc7+=) 6...Nf6 (6...d5 7.Nf3=) 7.Nc3 (7.Nf3 d5=) 7...Be7 (7...d5 8.Nf3=) 8.Nf3 0-0 9.Na4 (9.Be2=) 9...Nd5 (9...d6!?=) 10.e4+= d6?? (better is 10...Nf6 11.Bd4 Bc5 12.Nc5 bc5 13.Bc5 d6 14.Bd6 Qd6+/–) 11.ed5+- ed5 (11...e5 12.d4+-) 12.Bd3 Qe8 (12...Bg4 13.h3 Be6 14.Nd4+-) 13.0-0 Nd7 14.Qc2 Ne5 (14...h6+-) 15.Ne5 de5 16.Nb6 (16.Be5 Ra7+-) 16...Rb8 17.Nd5 Bd7 (17...Bd6 18.f4 Rb5 19.Bb5 Qb5 20.fe5 Qd5 21.ed6+-) 18.Be5 Rd8 (18...Rb7 19.Nc7 Qb8 20.Bh7 Kh8 21.Rfe1+-) 19.Bh7 Kh8 20.Nc7 Bf5 (20...Rc8 21.Bg7! Kg7 22.Ne8 Rfe8+-) 21.Qf5 Qd7 22.Qh5 Qd2 (22...Qh3 23.gh3 Rfe8 24.Be4 Kg8 25.Qh7 Kf8 26.Qg7) 23.Be4 Kg8 (23...Qh6 24.Qh6 Kg8 25.Qg7) 24.Qh7 1–0. Intruder – inator2, internet free game, 2018.

4.Bg7 Bb7 5.Nf3 d6 6.Bh8 Nd7 7.a3 Ba5 8.Bc3 Bc3 9.Nc3 Qf6 10.Be2 0-0-0 11.a4 Nc5 12.a5 Ne7 13.ab6 cb6 14.Ra7 Nc6 15.Ra3 Qe7 16.Qa1 Kc7 17.0-0 Nb4 18.Qb2 Nd5 19.Nd5 ed5 20.Rb1 Nd7 21.Rc3 Bc6 22.Nd4 Rb8 1–0. nordlicht – vahann_1, gameknot.com, 2001.

4.Bg7 Be7 5.Bh8 Bf6 6.Bf6 Qf6 7.Nc3 Bb7 8.Nf3 Qg6 9.Nb5 Na6 10.Rb1 Bc6 (10...Nf6 11.d4+-) 11.d4 (better 11.Ne5 Qg5 12.Nc6 dc6+-) 11...0-0-0 (11...f6+-) 12.Ne5 Qe4 (12...Qg7 13.Na7 Kb7 14.Nac6 dc6 15.Ba6 Ka6 16.Qf3+-) 13.Nc3 Qf5 14.Ba6 Kb8 15.Bd3 Bg2 (15...Qf6+-) 16.Bf5 Bh1 17.Bh7 Nf6 18.Nf7 Rf8 19.Bg6 Ng4 20.Qg4 Bb7 21.Ne5 d6 22.Nd7 Kc8 23.Nf8 Bd5 (23...Bc6 24.Qe6 Kb8 25.Bf5 Bd7 26.Qd7 a5 27.Qc8 Ka7 28.Nb5) 24.Nd5 a5 (24...Kb7 25.Be4 a5 26.Nb6 d5 27.Nd5 Ka7 28.Nc7 a4 29.Rb7) 25.Qe6 Kb7 (25...Kb8 26.Qe7 Ka8 27.Qc7 b5 28.Nb6) 26.Qd7 Ka6 27.Qc7 b5 28.Qb6 1-0. PERIERA (2120) – Vezirbaz, Casual blitz game, lichess.org, 2024.

4.Bg7 Nf6 5.Bh8 Ke7 6.Bf6 Kf6 7.Nc3 d5 8.Nf3 Bb7 9.Nd4 c5 10.Qf3 Ke7 11.Nde2 Qd7 12.Qh5 d4 13.ed4 cd4 14.Nd1 d3 15.cd3 Qd3 16.Qg5 Kd7 17.Nec3 Qc2 18.Qb5 Nc6 19.Bd3 a6 20.Qc6! Bc6 21.Bc2 Bg2 22.Rg1 Rg8 23.Ne3 Bc3 24.dc3 Be4 25.Rg8 (25.Rg8 f5 26.Be4 fe4 27.Rd1 Ke7 28.Ra8+-) 1–0. Fournier,Frederic – digerin, kurnik.com, 2009.

(--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6).

4.c4 Nf6 5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.c4).

4.Nf3 a5 5.b5 (--> 1.b4 a5 2.b5 b6 3.e3 Bb7 4.Bb2 e6 5.Nf3).

4.Nf3 d5 5.c4 Nf6 6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.c4).

4.Nf3 f5 5.c4 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

4.Nf3 f5 5.Be2 Nf6 6.b5 Be7 7.c4 0-0 (---> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3 Be7 7.Be2 0-0).

4.Nf3 Nf6 5.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3).

4.Nf3 Nf6 5.a3 Be7 6.c4 0-0 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.c4).

4.Nf3 Nf6 5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3).

4.Nf3 Nf6 5.b5 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5).

4.Nf3 Nf6 5.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7).

4.Nf3 Nf6 5.b5 Be7 6.c4 d5 7.a4 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0 8.a4).

4.Nf3 Nf6 5.b5 Be7 6.Be2 0-0 7.c4 c5 8.0-0 d5 9.a4 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

4.bc5 bc5 5.Nf3 Nf6 6.Na3 Ba6 (6...Be7 7.Rb1=) 7.Ba6 Na6 8.0-0 Be7 9.e4 d5 (9...Ne4? 10.Qe2+- (10.Bg7?! Rg8 11.Be5 d5=)) 10.ed5 Qd5 11.c4 Qb7 12.Qa4 Nd7 13.Qb5 Qb5 14.cb5 Nb4 15.Bg7 Rg8 16.Bb2 a6 (16...Nd3 17.Bc3=) 17.Bc3 (17.Rfb1 Nd3 18.Bc3 ab5 19.Nb5 Ra4+=) 17...Nd5 (17...ab5 18.Nb5 Ra2 19.Ra2 Na2 20.Ra1 Nc3 21.dc3+=) 18.g3 (18.Rfb1 Rg4 19.ba6 Ra6+=) 18...h5 (18...Rg4!? 19.ba6 Ra6+=) 19.Rfb1+= h4 20.Kg2 ab5 21.Nb5 Ra4 22.a3 f5 23.Rg1 f4 (23...c4 24.Rge1+=) 24.Rae1 fg3 25.fg3 Rag4 (25...c4!?+=) 26.Kf2+- (26.Re6? Nf4 27.Kh1 Ne6-+) 26...hg3 27.Rg3 Kf7 28.Re2 Nf4 29.Re3 (29.Rg4 Rg4 30.Re4 Kg6+/–) 29...c4 30.Rg4 Rg4 31.Re4 Nd3 32.Ke3 Bc5 33.Bd4 Re4 34.Ke4 Nf6 35.Ke3 Ng4 36.Ke2 Nf4 37.Kf1 Bd4 38.Nbd4 e5 39.Ne2 Ke6 (39...Nd3 40.h3 Nf6 41.Nc3+/–) 40.Nf4 ef4 41.h4 Kd5 42.h5 Kc5 43.Ke2 Kb5 (43...Kd5 44.a4+-) 44.Nd4 Ka4 45.Kf3 Nf6 (45...Nh6+-) 46.h6 Ka3 47.Kf4 (47.Kf4 Nh7 48.Kf5+-) 1–0. marekt – suopis, internet, 2014.

4.bc5 Bc5 5.Bg7 Be7 6.Bh8 Bf6 7.Bf6 Qf6 8.d4 Bb7 9.Nf3 Nc6 10.Bb5 Nce7 11.0-0 a6 12.Ba4 b5 13.Bb3 Nh6 14.Nbd2 0-0-0 15.c4 Rg8 16.cb5 ab5 17.Rc1 Bc6 18.Ne4 Qg7 19.Ng3 Nhf5 20.Rc6 Nc6 21.Qc2 Ng3 22.fg3 h5 23.Ne5 f5 24.Nc6 dc6 25.Qc6 Kd8 26.Qe6 Re8 27.Qd5 Kc7 28.Qb5 Re3 29.Rc1 Kd8 30.Qb6 Ke8 31.Rc8 Ke7 32.Rc7 Kf8 33.Rg7 Kg7 34.d5 Re1 35.Kf2 1–0. Phomopsis – PapaWasiy55, lichess.org, 2018.

4.a3 A) 4...Nf6 A1) 5.Be2 a6 6.Nf3 Bb7 7.Nc3 Bd6 8.0-0 0-0 9.Ra2 b5 10.d3 Re8=; A2) 5.Bd3 Be7 (5...a6 6.Nf3 Be7 7.c4 Bb7 8.0-0 0-0 9.Qc2 h6 10.e4 d6=; 5...Bd6 6.Nf3 a6 7.e4 e5 8.0-0 0-0 9.Nc3 Be7 10.Nd5 d6=; 5...Bb7 6.Nf3 a6 7.0-0 Be7 8.e4 0-0 9.Qe2 d6 10.Nc3 Qd7=) 6.b5 Na5 7.Qe2 d5 8.Nf3 c5 9.bc6 Nc6 10.0-0 0-0=; A3) 5.Nh3 Bb7 (5...a6 6.Be2 Bb7 7.0-0 Be7 8.Nf4 0-0 9.c4 d5 10.cd5 Nd5=; 5...d5 6.Bb5 Bd7 7.Ba6 Bd6 8.f4 Qe7 9.b5 Na5 10.Bc3 Nc4=; 5...Be7 6.Be2 a6 7.0-0 0-0 8.Nc3 Bb7 9.Ng5 b5 10.f4 h6=) 6.f3 Be7 7.Be2 0-0 8.0-0 a6 9.Nf4 d5 10.d4 Bd6=; A4) 5.Nf3 a6 (5...Bb7 6.d4 a6 7.Bd3 Be7 8.0-0 0-0 9.c4 Re8 10.e4 d5+=) 6.Nc3 Bb7 7.e4 Bd6 8.d4 Ng4 9.h3 Nh6 10.Bc1 Qf6+=; B) 4...a5 5.b5 Na7 (5...Nce7 6.Nf3 Bb7 7.Be2 Nf6 8.0-0 Ng6 9.Ne5 Bd6 10.f4 0-0=; 5...Nb8 6.Nf3 Nf6 7.Bd3 Be7 8.0-0 Bb7 9.Nc3 0-0 10.Re1 d5=) 6.Nf3 Nf6 7.Be2 Bb7 8.Nc3 Be7 9.0-0 0-0 10.Ne5 c6=; C) 4...a6 C1) 5.Bd3 d5 (5...Bb7 6.Nf3 Nf6 7.0-0 Be7 8.Nc3 0-0 9.e4 d6 10.Qe2 b5=; 5...Nf6 6.Nf3 Bb7 7.0-0 Be7 8.e4 0-0 9.Nc3 d6 10.Qe2 Qd7=; 5...e5 6.Nf3 d6 7.Nc3 Nf6 8.0-0 Be7 9.Ng5 d5 10.Be2 e4+=) 6.Nf3 Nf6 7.Qe2 Bd6 8.0-0 0-0 9.Re1 Re8 10.e4 de4+=; C2) 5.Be2 Nf6 (5...Bb7 6.Nf3 Nf6 7.Nc3 Bd6 8.0-0 0-0 9.d3 Qe7 10.Qd2 e5=) 6.Nf3 Bb7 7.0-0 Bd6 8.Nc3 0-0 9.Re1 e5 10.e4 Nd4=; C3) 5.Nc3 Bb7 (5...Be7 6.Nf3 Nf6 7.Be2 e5 8.0-0 0-0 9.d4 e4 10.Ne5 Qe8=; 5...Nf6 6.Nf3 Be7 7.Be2 e5 8.0-0 0-0 9.d4 e4 10.Ne5 Qe8=; 5...e5 6.Nf3 Nf6 7.e4 d6 8.Be2 Be7 9.d4 ed4 10.Nd4 Bd7+=) 6.Nf3 Nf6 7.Be2 Bd6 8.0-0 0-0 9.Re1 Qe7 10.e4 Bf4=; C4) 5.Nf3 Nf6 (5...Bb7 6.Nc3 Nf6 7.Be2 Be7 8.0-0 0-0 9.e4 b5 10.d4 d5+=) 6.Be2 Bd6 7.Nc3 Bb7 8.0-0 0-0 9.Re1 Ne5 10.Ne5 Be5=; D) 4...Bb7 D1) 5.Be2 Nb4 (5...Nf6 6.Nf3 a6 7.0-0 Bd6 8.Nc3 0-0 9.Re1 Ne5 10.Ne5 Be5=; 5...a6 6.Nf3 Nf6 7.Nc3 Bd6 8.0-0 0-0 9.Re1 Ne5 10.e4 c5=) 6.ab4 Bg2 7.Bf3 Bh1 8.Bh1 c6 9.Bd4 d5 10.Nf3 Nf6+=; D2) 5.b5 Na5 (5...Nce7 6.Nf3 a6 7.ba6 Ba6 8.Ba6 Ra6 9.0-0 d5 10.Qe2 Qa8=; 5...Nb8 6.Nc3 Nf6 7.Nf3 a6 8.a4 Bb4 9.Be2 0-0 10.0-0 d6=) 6.Nf3 Nf6 7.Nc3 Be7 8.Bd3 a6 9.ba6 Ba6 10.Ba6 Ra6=; D3) 5.Nf3 a6 (5...Nf6 6.Be2 a6 7.0-0 Bd6 8.Nc3 0-0 9.d3 Be7 10.e4 d5=) 6.Bc4 Nf6 7.0-0 Be7 8.Nc3 0-0 9.d4 d5 10.Bd3 Bd6=.

4.b5 Na5 5.Nc3 a6 (5...Bb7 6.Nf3 Nf6 7.a3 Be7 8.Be2 0-0 9.0-0 a6 10.ba6 Ba6=; 5...Nf6 6.Nf3 a6 7.Be2 d5 8.Ne5 Bd6 9.f4 Nd7 10.Nd7 Qd7=; 5...d5 6.Nf3 a6 7.e4 ab5 8.Bb5 c6 9.Bd3 Ba6 10.Ba6 Ra6+=) 6.Nf3 Nf6 7.Be2 ab5 8.Nb5 Be7 9.Nbd4 Bb7 10.0-0 0-0=.

4.b5 Na5 5.c4 Bb7 6.Nf3 Nf6 7.Be2 Bf3 (7...a6 8.0-0=) 8.Bf3+= Nc4 9.Bf6 (better 9.Ba8!? Qa8 10.0-0+=) 9...Qf6=+ 10.Ba8 Qa1 11.Qc2?? (11.Qb3=+) 11...Bb4 (better 11...Na3 12.Qd1 Qb1 (12...Nb1?! 13.0-0-+) 13.Qb1 Nb1-+) 12.0-0= d5 13.d3 Qb2 14.Bc6 (14.Rc1 Qc2 15.Rc2 Ke7 16.Bd5 ed5 17.dc4 Rd8=) 14...Ke7 15.Qa4 Nd2 (15...Ne5 16.Qa7 Bd6-/+ (worse 16...Nd3 17.Qc7 Kf6 18.Qb6+=)) 16.Nd2+- Qd2 17.Qa7 (17.Rd1 Qc3+-) 17...Bd6+= 18.d4 h5 19.a4 (19.Qa4 Qe2 20.Rc1 h4+=) 19...h4 20.h3 Qc2 (20...f5 21.Qa6=) 21.a5+= ba5 22.Qa5 Qf5 (22...g5 23.Re1=) 23.Qa7+- e5 (23...Kf6!?+-) 24.b6 ed4 25.bc7 Do you see the mate threat? (25.ed4 Qf4 26.Re1 Kf6=) 25...Qe5?? (25...Kf6 26.Qd4 Qe5 27.Bd5 Qd4 28.ed4 Bc7 29.Rc1+-) 26.c8Q (better 26.c8N Kf6 27.Nd6 Qd6 28.Qd4 Qe5 29.Qb6+- (worse 29.Bd5 Qd4 30.ed4 Rd8+-)) 26...Kf6+= The mate threat is Qh2 27.f4 (better 27.Qf5! Qf5 28.Qd4 Qe5 29.Bd5 Qd4 30.ed4+=) 27...Qe3=+ (27...Rc8 28.fe5 Kg5 29.Qf7 Kh6 30.Rf5 g6 31.Rf6 Rg8 32.Qg8 de3 33.Qg6) 28.Kh1 Threatening mate: Qf5 28...Rc8 29.Bd5 Rc2?? (better 29...Rc7 30.Qb6 Ke7=+) 30.Qf7 1–0. aravind555 (1610) – RLIV, lichess.org, 2020.

4.b5 Na5 5.Bd4 Nf6 (5...a6 6.Nf3 Nf6 7.Nc3 ab5 8.Bb5 Bb7 9.0-0 Be7 10.e4 0-0=; 5...Ne7 6.Nf3 a6 7.Ng5 Bb7 8.Qh5 Ng6 9.ba6 Ba6 10.Ba6 Ra6=; 5...Bb7 6.Nf3 Nf6 7.Be2 a6 8.ba6 Ba6 9.Ba6 Ra6 10.Qe2 Ra8=) 6.Nf3 a6 7.Nc3 Be7 8.e4 0-0 9.e5 Nd5 10.Nd5 ed5=.

4.b5 Na5 5.Be5 Nf6 (5...a6 6.Nf3 d5 7.Nc3 f6 8.Bg3 Bb4 9.Na4 ab5 10.Bb5 c6=) 6.Nc3 Bb7 7.Nf3 d6 8.Bf6 Qf6 9.Be2 Be7 10.0-0 0-0+=.

4.b5 Na5 5.Nf3 Nf6 (5...a6 6.a4 Bb7 7.ba6 Ba6 8.Ba6 Ra6 9.Qe2 Ra8 10.0-0 Nf6=; 5...Bb7 6.Be2 Nf6 7.0-0 a6 8.ba6 Ba6 9.Ba6 Ra6 10.Qe2 Ra8=; 5...Ne7 6.Nc3 Bb7 7.Rb1 a6 8.ba6 Ba6 9.Ba6 Ra6 10.Qe2 Ra8+=) 6.Bd4 a6 7.Nc3 ab5 8.Bb5 Bb7 9.0-0 Be7 10.e4 0-0=.

4.b5 Nb4 A) 5.c3 Nd5 6.e4 Nde7 7.d4 a6 8.Nd2 ab5 9.Bb5 Ba6 10.Ba6 Ra6=; B) 5.a3 Nd5 6.Qf3 c6 7.c4 Nde7 8.Bd3 a6 9.Ne2 ab5 10.cb5 Bb7+=; C) 5.Ne2 Bb7 (5...a6 6.a3 Nd5 7.e4 Nde7 8.Ng3 d5 9.ed5 Nd5 10.c4 Ndf6=; 5...Nd5 6.e4 Nde7 7.Ng3 a6 8.a4 Bb7 9.ba6 Ba6 10.Ba6 Ra6+=) 6.a3 Nd5 7.e4 Nde7 8.Ng3 d5 9.Qf3 Ng6 10.Nc3 d4=; D) 5.e4 Qh4 6.d3 d5 7.a3 de4 8.g3 Qd8 9.ab4 Bb4 10.Nd2 Nf6+-.

4.b5 Nb8 A) 5.Nf3 Nf6 (5...Bb7 6.Bc4 a6 7.Nc3 ab5 8.Nb5 Ra4 9.d3 d5 10.Bb3 Ra5=; 5...a6 6.a4 Bb7 7.Be2 Nf6 8.0-0 Be7 9.Nc3 0-0 10.ba6 Ba6=; 5...d5 6.Be2 a6 7.a4 Nf6 8.0-0 Bd6 9.Ne5 0-0 10.f4 Bb7=) 6.Be2 a6 7.Nc3 ab5 8.Nb5 c6 9.Nc3 d5 10.Ne5 Bd6=; B) 5.Qf3 d5 (5...c6 6.Nc3 Nf6 7.e4 d5 8.bc6 Nc6 9.Bb5 Bb7 10.ed5 Nd5=) 6.Qg3 Nf6 7.Nf3 Ne4 8.Qf4 f6 9.Qh4 h5 10.Be2 g5-/+; C) 5.Nc3 a6 (5...Bb7 6.Nf3 a6 7.Bc4 ab5 8.Nb5 Ra4 9.Bb3 Ra5 10.c4 Nc6=; 5...Nf6 6.Nf3 a6 7.a4 Bb4 8.Be2 0-0 9.0-0 Bb7 10.Ne5 d5=; 5...d5 6.Nf3 a6 7.a4 Nf6 8.Bd3 c5 9.ba6 Ba6 10.Nb5 Nbd7=) 6.Nf3 Nf6 7.Be2 ab5 8.Nb5 c6 9.Nc3 d5 10.0-0 Bd6+=; D) 5.a4 Nf6 (5...a6 6.Nf3 Nf6 7.Be2 Bb7 8.0-0 Bb4 9.Bc3 Bc3 10.Nc3 0-0=; 5...Bb7 6.Nf3 Nf6 7.Be2 Bb4 8.0-0 0-0 9.Nd4 a6 10.Nc3 e5=; 5...d5 6.Nf3 Nf6 7.Be2 a6 8.0-0 Bd6 9.Ne5 0-0 10.f4 Bb7=) 6.Qf3 d5 7.Be2 a6 8.Nh3 Bd6 9.0-0 c6 10.bc6 Nc6=.

4.b5 Nce7 5.Be2 (5.Nf3 a6 (5...Bb7 6.Be2 a6 7.ba6 Ba6 8.0-0 Be2 9.Qe2 d5 10.d3 Ng6+=) 6.Ne5 Nf6 7.Nc3 c6 8.Qf3 ab5 9.Ne4 Nf5 10.Ng5 Nd6=; 5.a4 a6 6.Nf3 Nf6 7.a5 ba5 8.Ra5 c6 9.Ra2 Ned5 10.ba6 Nb4+=; 5.Nc3 Nf6 (5...Bb7 6.Nf3 Nf6 7.Be2 a6 8.0-0 ab5 9.Nb5 Ng6 10.Bf6 gf6=; 5...a6 6.Nf3 Nf6 7.Be2 ab5 8.Nb5 Bb7 9.0-0 Ng6 10.Bf6 gf6=; 5...d5 6.Nf3 a6 7.a4 Nf6 8.Bd3 ab5 9.ab5 Ra1 10.Qa1 Ng6+=) 6.Nf3 a6 7.a4 Bb7 8.Be2 Ng6 9.0-0 Bb4 10.Re1 0-0=; 5.Qf3 c6 (5...d5 6.a4 a6 7.Bd3 f6 8.e4 Bb7 9.e5 f5 10.Ne2 Ng6=) 6.Ne2 Bb7 7.Nf4 Qc7 8.Na3 e5 9.Ne2 d5 10.c4 Nf6+=) 5...Bb7 (5...a6 6.a4 Nf6 7.Nf3 Bb7 8.0-0 Nf5 9.ba6 Ba6 10.Ba6 Ra6+=; 5...d5 6.Nf3 a6 7.a4 Nf6 8.0-0 Ng6 9.a5 ba5 10.Ra5 c5+=; 5...Nf6 6.Nf3 a6 7.a4 Nf5 8.0-0 Bb7 9.ba6 Ba6 10.Ba6 Ra6+=) 6.Bf3 (6.Nf3 a6 7.ba6 Ba6 8.Ba6 Ra6 9.0-0 d5 10.Re1 Nf5=) 6...Qc8 (6...d5 7.Ne2 a6 8.c4 Qc8 9.cd5 Nd5 10.ba6 Ra6=) 7.Bb7 (7.d3 a6 8.c4 ab5 9.cb5 Nd5 10.Ne2 Ra5=) 7...Qb7 8.Nf3 Nf6 (8...a6 9.a4 Nf6 10.0-0 d5+=) 9.d3 (9.c4 a6 10.d3 d5+=) 9...0-0-0 (9...a6 10.c4 d5+=) 10.a4 (10.0-0 Nf5+=) 10...Kb8 (10...Ng6+=) 11.c4 d5 12.Nbd2 Nc8? (12...dc4 13.Nc4 Nd7 14.0-0+-) 13.Bc3 (13.Ne5!? Re8 14.a5 ba5 15.Ra5 dc4 16.Nc6 Ka8 17.Nc4 Nd5+-) 13...Nd7 14.a5 Nc5 (14...dc4 15.Nc4 Qd5 16.Qb1+/–) 15.0-0 (better is 15.Ne5 Nd3 16.Nd3 dc4 17.Ne5 (17.Nc4?! Qg2 18.Rf1 f6+-) 17...Qg2 18.Rf1+-) 15...Nd3+/– 16.Qb1 dc4 17.Nc4 Bc5? (better is 17...c6 18.ab6 cb5+-) 18.Nce5+- (18.Bg7 Rhg8 19.Nce5 Ne5 20.Ne5 Ne7 21.Qh7 f6+/–) 18...Ne5 19.Ne5 (19.Be5?! f6+=) 19...Rd5 (19...Nd6 20.Nc6 Kc8 21.Bg7 Rhe8 22.ab6 Bb6 23.Nd8 Rd8 24.Qh7 Qd5+-) 20.Nc6 Ka8 21.a6 (21.a6 Qc6 22.bc6+-) 1–0. Vila Vila,Ricard (1860) – Baeza Fernandez,Jose Alfonso (1795), Vic ESP, 2011.

4.Qh5 Ke7 5.Qf3 c6 6.b5 Bb7 7.Qg3 Nf6 8.Nf3 d6 9.Bd3 Nbd7 10.bc6 Bc6 11.Nd4 Qc7 12.0-0 Nc5 13.f3 Kf7 14.Nc3 Nd3 15.cd3 Be7 (15...Rc8 16.Rac1 Qd7 17.Nc6 Rc6 18.Ne2=) 16.Rac1 (better is 16.Qg7! Kg7 17.Ne6 Kf7 18.Nc7+-) 16...Qd7+= 17.e4 g6? (better is 17...Nh5 18.Qf2 Rhc8=) 18.Nc6+- Qc6 19.Nd5 Qb5 20.Bf6 ed5 21.Be7 Ke7 (21...Rhe8 22.Bg5 Qd7+-) 22.Rc7 (22.Rc7 Qd7 23.Qg5 Ke8 24.Rd7 Kd7 25.ef5+-) 1–0. Krueger,Ingo (1765) – Olschok,Juergen (1720), Pinneberg–ch, 2005.

4.Qh5 g6?? 5.Qf3+- (5.Qf3 Nc6 6.Bh8 Bb4 7.Qh3+-) 1–0. DEFFM – IagoPrytherch, freechess.org, 2018.

4.a3 Bb7 5.c4 d5 6.Nf3 dc4 7.Bc4 e5? (better is 7...Qd7+/–) 8.Ne5!+- fe5 9.Qh5 g6 10.Qe5 Qe7 11.Qe7 (11.Qh8 Nh6+-) 11...Be7 12.Bh8 Bg2 (12...Nh6 13.f3 Nf7+-) 13.Rg1 (13.Bg8?! Bh1 14.d4 Nd7+/–) 13...Be4 14.Bg8 Nd7 15.Ke2 (better is 15.Nc3 Bd3 16.Bg7 c6+-) 15...Nf6 (15...0-0-0 16.Bh7 Rh8+-) 16.Bf6 Bf6 17.Ra2 Ke7 18.Bh7 Rh8 19.Bg6 Bd5 20.Rc2 c6 21.b5 c5 22.d4 Bb3 23.Rc3 c4 24.d5 Rh2 25.e4 Bc3 26.Nc3 Bc2 27.e5 Rh4 28.Bc2 Rh5 29.e6 Kd6 30.Rg7 Re5 31.Be4 Kc5 32.Rc7 Kd6 33.Rd7 Kc5 34.Kd2 Kd4 35.Bf3 Rf5 36.e7 Rf3 37.e8Q Rf2 38.Ke1 Kc3 39.Qe3 Kb2 40.Qf2 Ka3 41.Rc7 Kb4 42.Qb2 Ka5 43.Rc4 a6 44.Qa3 Kb5 45.Qb4 1–0. slavisa99 – grigoropoulo2, caissa.com, 2004.

4.a3 d5 5.Be2 c5 6.bc5 Bc5 7.Bh5 g6 8.Bf3 Nc6 9.c4 dc4?? 10.Bc6+- Ke7 11.Ba8 (11.Ba8 e5 12.Qa4+-) 1–0. revbodio – GRIGOROPOULOS18, Caissa.com, 2004.

4.c4 Bb4+= 5.Bd3 c5 (5...Bb7 6.Qh5 Kf8 7.Nf3+=) 6.Qh5= Kf8 7.a3 (7.Be4 Nc6=) 7...Ba5 (7...Bb7 8.Nf3 (worse is 8.ab4 Bg2 9.bc5 Bh1-+) 8...Ba5 9.Nc3=) 8.Ne2 (8.Be4 Nc6=) 8...Nc6 9.0-0 Qe7 (9...Nge7 10.Nbc3=) 10.Nf4 (10.Bh7? g5-+) 10...Nh6 (better is 10...Qd6!?=) 11.Bh7!+/– Rh7?? (better is 11...Qf7 12.Ng6 Ke8 13.Nh8 Qh5 14.Bg6 Qg6 15.Ng6 e5+/–) 12.Ng6+- Kg8 (12...Ke8 13.Ne7 Ke7+-) 13.Ne7 Ne7 (13...Kf8 14.Qg6 Rh8 15.Bf6 gf6 16.Qf6 Nf7 17.Ng6 Kg8 18.Nh8 Nh8+-) 14.Qe8 1–0. DEFFM – GuestYPZZ, freechess.org, 2018.

4.Qf3 d5 5.d4 (5.a3 a5 6.b5 e5=) 5...Bb7 (5...Bb4 6.Bc3 Bd6 7.Nd2-/+) 6.Ne2 a6 (6...Bb4 7.Bc3 Bd6 8.Nd2=+) 7.Qg3 b5 8.a3 Nh6 9.Nf4 Qd7 10.Nd2 Nf5 11.Qh3 Bd6 12.g3 (12.Ng6! Rg8 13.Qh7+/–) 12...Qf7 13.Nb3 Nd7 14.Nc5 Nc5 15.dc5 Bf4 16.gf4 c6 17.Bd3 Nh6 18.Rg1 Kf8 19.Qg3 g6 20.h4 Nf5 21.Qh3 Ne7 22.0-0-0 Rg8 23.h5 f5 24.h6 Ke8 25.Qh4 Kd7 26.Bg7 Rge8 27.Qg3 Ng8 28.Qf3 Nf6 29.Qe2 Nh5 30.Bb2 Nf6 31.Qd2 Rf8 32.Qc3 Ne4 33.Be4 fe4 34.Qe5 Qe7 35.Rg5 Rf5 36.Rf5 ef5 37.Qc3 Re8 38.Qb3 Bc8 39.Bg7 Qe6 40.a4 Kd8 41.ab5 ab5 42.Kb2 Qd7 43.Ra1 Ke7 44.Be5 Ke6 45.Qc3 Rf8? 46.Bd6 Rf7?? 47.Qe5 1–0. slavisa99 – grigoropoulo3, caissa.com, 2004.

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3).

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3).

4.Qf3 d5 5.Bf6 Qf6 6.Qf6 gf6 7.a3 f5 (7...Bd6 8.Nc3=+) 8.d4 (8.Nc3 c6=) 8...f6 (8...c5 9.bc5 bc5 10.Nc3=+) 9.c3 (9.c4 c6=) 9...e5 (9...Rg8 10.Nd2=+) 10.Nd2 (10.c4 dc4 11.Bc4 Bb7=) 10...Bb7 (10...Be6 11.c4=) 11.Ne2 Bh6 (11...a5 12.b5=) 12.c4 dc4 13.Nc4 ed4 (13...f4 14.Rd1+=) 14.ed4 (better is 14.Nd4!? f4 15.Rd1+/–) 14...Nd7 15.Ng3 f4 16.Nf5 Bg5 (better is 16...Bf8+=) 17.h4 Bh4? (better is 17...f3 18.g3 Be4 19.Ncd6 cd6 20.Nd6 Kd8 21.hg5 Bg6+-) 18.Rh4 0-0-0 19.f3 (19.Rc1 Rhe8 20.Kd2 Kb8+-) 19...Rhe8 20.Kf2 Nf8 21.Be2 Rd5 22.Rf4 Ng6?? 23.Ng7 Red8?? 24.Rc1 Nf4-+ 25.g3 Nh3 26.Kg2 Ng5 27.f4 Ne4 28.Bf3-/+ Rd4 29.Ne6 Rd2 30.Nd2= Rd2 31.Kh3?? Rd7 32.Be4 Be4-/+ 33.f5?? Bf5-+ 34.g4 Be6 (35.Rf1 h5 36.Rf6 hg4 37.Kg2 Rd2 38.Kg1 Bd5-+) 0–1. serbiansaint – GRIGOROPOULOS3, Caissa’s Web, 2004.

4.Nf3 Be7 5.Be2 h6 6.a3 Bb7 7.0-0 d6 8.d3 e5 9.Nbd2 Nc6 10.c4 d5 11.cd5 Nd5 12.Be5 0-0 13.Bb2 Bd6 14.Rc1 Nce7 15.Qc2 Ng6 16.Nd4 Qg5 17.N2f3 Qg4 18.Ne5 Qg5 19.Ndf3 Qe7 20.Ng6 fg6 21.e4 Nf4 22.g3 Nh3 23.Kg2 Bc8 24.Qc6 Bg4 25.Qc4 Kh7 26.Qc3 Qf7 27.Bd1 Bf3 28.Bf3 Qf3 29.Kh3 g5 30.Qg7 1–0. Phomopsis – orang_pendek, lichess.org, 2019.

4.a3 A) 4...Be4 5.Nc3 (5.Nf3 Nc6 6.Nc3 Bf3 7.Qf3 Nf6 8.Ne4 Be7 9.Bd3) 5...Bg6 6.Nf3 Nc6 7.b5 Na5 8.Bd3 Bd3 9.cd3; B) 4...Nf6 5.e5 (5.Nf3 Ne4 6.Nc3 Ng5 7.Be2 Bd6 8.Nb5 0-0 9.0-0) 5...Nd5 6.Nf3 a5 7.b5 Bc5 8.c4 Nf4 9.g3; C) 4...a5 5.Nc3 (5.ba5 Ra5 6.Nc3 Nf6 7.Nf3 Ne4 8.Be2 Nd6 9.0-0) 5...ab4 6.ab4 Ra1 7.Qa1 Bb4 8.Nd5 Bd5 9.Bg7.

4.b5+= A) 4...Be4 5.Nc3 (5.Nf3 Nf6 6.Nc3 Bc5 7.Be2 a6 8.Ne4 Ne4 9.0-0) 5...Nf6 6.Ne4 Ne4 7.Qf3 d5 8.Bd3 Nc5 9.Ne2; B) 4...a6 5.Nc3 (5.Nf3 Be4 6.Nc3 Nf6 7.Ne4 Ne4 8.Bd3 f5 9.a4) 5...ab5 6.Bb5 Nf6 7.Qe2 Bc5 8.Nf3 Nc6 9.0-0; C) 4...Nf6 5.e5 (5.Nc3 Ne4 6.Nf3 a6 7.Ne4 Be4 8.a4 Bd6 9.d3) 5...Ne4 6.Nf3 a6 7.Nc3 Nc3 8.Bc3 ab5 9.Bb5.

4.Nc3 a6 5.a3 (5.Nf3 Bb4 6.Bd3 Nc6 7.0-0 Nge7 8.Re1 Ng6 9.e5) 5...Nc6 6.Nf3 Nf6 7.e5 Nh5 8.Be2 d6 9.ed6.

4.Nc3 Bb4 5.a3 Bc3 6.Bc3-/+.

4.Nc3 Bb4 5.Bc4 Nf6 6.Nge2 Nc6 7.0-0 0-0 8.Bb3 Na5 9.f3.

4.Nc3 Bb4 5.Nf3 Nc6 6.a3 Be7 7.Bc4 Nf6 8.0-0 0-0 9.Qe2.

4.Nc3 Bb4 5.Qg4 h5?? (better 5...Nf6 6.Qg7 Rg8-/+) 6.Qg7+- Qf6 7.Qf6 (7.Nb5 Qg7 8.Bg7 Rh7 9.Nc7 Kd8=) 7...Nf6 8.Nb5 Ne4? (better 8...Ke7 9.a3 Ba5 10.Nc7 Be4 11.Na8 Ba8+/-) 9.Bh8 Bd2 10.Ke2 Na6 (10...Ba6 11.c4 Bb5 12.cb5 a6+-) 11.f3 0-0-0 (11...Ke7 12.fe4 Bh6 13.Bb2 Be4 14.c4+-) 12.fe4 Ba5 (12...Rh8 13.Kd2 Be4 14.Na7 Kb7 15.Nb5+-) 13.Bf6 Rg8 14.Nf3 (14.Na7 Kb8 15.Nb5 Be4+-) 14...Be4 15.Na7 Kb7 16.Nb5 Nb4 (16...Bc2 17.Ne5 Ba4 18.Rb1+-) 17.c4 c6 (17...d5 18.cd5 Nd5+-) 18.Nd6 (18.Nd6 Ka8 19.Ne4+-) 1-0. OnlyPolishOpening (2480) - brodov (2005), lichess.org, 2021. (=1.e4 e6 2.b4 b6 3.Bb2)

4.Nc3 Nc6 5.b5 Nce7 6.d4 (6.Nf3 Nf6 7.Bd3 a6=) 6...Ng6 7.Nf3 (7.a3 f5 8.ef5 ef5=) 7...Bb4 8.Bd3 (8.Nd2 Qf6=) 8...Qe7 (8...Nf6!? 9.Nd2 a6=) 9.0-0 Bc3 10.Bc3 0-0-0 (better 10...a6!?+=) 11.a4+/- Nh4 (11...Nf6 12.Qe1+/-) 12.Nh4+- Qh4 13.f3 g5 (13...Ne7 14.a5+-) 14.d5 (better 14.a5+-) 14...ed5?? (better 14...f6+-) 15.Bh8 de4 (15...g4 16.e5 g3 17.h3+-) 16.Be4 (16.fe4 Nh6 17.Be5 Qg4 18.Qg4 Ng4+-) 16...d5 (16...Be4 17.fe4 Qe4 18.a5+- (18.Rf7?! Nh6 19.Rf6 Ng4+-)) 17.Bf5 Kb8 18.Qd4 Ne7 (18...Qd4 19.Bd4 h6+-) 19.Bf6 (19.Qh4 gh4 20.Bf6 Nf5 21.Bd8 h3+-) 19...Nf5?? (better 19...Qd4 20.Bd4 Nf5+/-) 20.Qh4+- gh4 21.Bd8 Ne3 (21...h3 22.g4 Kc8 23.Bf6+-) 22.Rfe1 (22.Rf2!? h3+-) 22...Nc2 23.Re8 (23.Bc7!? Kc8 24.Rac1 Ne1 25.Bb6 Kd7 26.Rc7 Kd6+-) 23...Na1 24.Bh4 (better 24.Bf6 Bc8 25.Ba1+-) 24...Bc8 25.Bg3 d4 (25...Nb3 26.Rf8 f5 27.Rf7+-) 26.Re7 Bb7 (26...Be6+-) 27.Rc7 Ka8 28.Rf7 Bd5 (28...Bc8+-) 29.Rf8 Kb7 30.Rb8 1-0. OnlyPolishOpening (2470) - brodov (2005), lichess.org, 2021. (=1.e4 e6 2.b4 b6 3.Bb2)

4.Nc3 Nf6 5.e5 (5.b5 Ne4 6.Nf3 a6 7.Ne4 Be4 8.a4 Bd6 9.d3) 5...Ne4 6.Qf3 d5 7.ed6 Nd6 8.Qg4 h5 9.Qf4.

4.d3 Nc6 5.a3 f6 6.Nd2 Nge7 7.Qg4 (7.h4 Nc8=) 7...h5 (7...Ng6 8.Ngf3+=) 8.Qh3 Ng6 9.Be2 Nf4 10.Qf3 g5 11.Nh3 e5 (better is 11...Ne5!? 12.Be5 fe5 13.Nf4 gf4+=) 12.Nf4+/– ef4 13.Qh3 h4 14.Qf5 Rg8?? (better is 14...Bg7+=) 15.Bh5 (15.Bh5 Rg6 16.Bg6 Ke7 17.Qf6) 1–0. Cruz Vera,Javier – Gonzalez Diaz,Eusebio, San Cristobal ESP, 1st Verano Open, 2012.

4.f3 d5 5.ed5 Bd5 (5...Bb4?? 6.Bg7 Bd5 7.Bh8+-; 5...Qd5?! 6.a3=; 5...ed5?! 6.a3=) 6.c4 (6.a3 Nf6=) 6...Bb7 (6...Bc4!? 7.Bc4 Qh4 8.g3 Qc4-/+) 7.a4 Nf6 (7...Bb4?? 8.Bg7 Bd6 9.Bh8 Qh4 10.Ke2 Qc4 11.d3+-) 8.d4? (better 8.b5!?=+) 8...Bb4-+ 9.Nc3 (9.Bc3 Nc6 10.Ne2 a5-+) 9...0-0 10.Qd3 Nbd7 11.h3 (better 11.Rd1-+) 11...c5 12.dc5 Bc5 (12...Nc5 13.Qe3-+) 13.Nge2 Qe7 14.Nb5 Bb4 (14...Rad8 15.Qb3 Bb4 16.Bc3 Bc3 17.Nec3-+) 15.Nec3 (15.Bc3 a6 16.Qd2 Bc5-+ (16...ab5?! 17.Bb4 Nc5 18.cb5-/+)) 15...Rfd8 16.0-0-0 (16.Qe3 Nc5 17.Ba3 Ba3 18.Na3 Nh5-+) 16...Nc5 17.Qc2 a6 18.Nd4 Rac8 19.h4 Ncd7 (19...Qc7 20.Kb1-+) 20.Ne4 (20.Be2 Ne5 21.Qb3 Nh5-+) 20...Ne4 21.fe4 Nc5 22.g3 (22.e5-+) 22...Be4 23.Qh2 Bh1 (better 23...Qf6 24.Rd2 Bd2 25.Qd2 Bh1 26.Qf4-+) 24.Qh1 Rd4 (better 24...Na4 25.Qf3-+) 25.Bd4 Nb3 (25...Na4 26.Qf3-+) 26.Kc2 Nd4 27.Rd4 Qf6 28.Qg1 (28.Kd3-+) 28...Bc5 29.Qg2 (29.Rf4 Qf4! 30.gf4 Bg1-+) 29...Bd4 30.Bd3 Ba1 31.Kb1 (31.Kd1 Rd8 32.Qe4 Qf1 33.Kc2 Qf2 34.Kc1 Qg3 35.Kd2-+) 31...Bd4 (better 31...Rd8 32.Bh7 Kh7 33.Qc2 Kg8 34.Ka2-+) 32.Qe4?? (32.Kc2 Rd8 33.Qf1-+) 32...g6 (32...Qf2 33.Kc1 Bc3 34.Qe2 Qg3 35.Kc2-+) 33.h5 Ba1 (better 33...Qf2 34.Qe2 gh5 35.Kc2-+) 34.Qe2 (34.Kc2 Qf2 35.Qe2 Qg3 36.hg6 hg6-+) 34...Qc3 (34...Rd8 35.hg6 Rd3 36.gf7 Kf8 37.c5 Rb3 38.Kc1 Qc3 39.Qc2 Qe1 40.Qd1 Rc3 41.Kb1 Qd1 42.Ka2 Qe2 43.Ka1 Rc1) 35.hg6 hg6 36.g4 b5! 37.ab5 (37.cb5 Qb3 A classical mating theme) 37...ab5 38.cb5 Qc1 39.Ka2 Ra8 40.Kb3 Qc3 0–1. Delboy Smith (1710) – bnolan (1900), ChessWorld.net, 2013.

4.Nf3 Nc6 5.b5 (5.a3 Nf6 6.Bd3 Be7 7.0-0 0-0 8.b5 Na5 9.Nc3) 5...Na5 6.Nc3 Nf6 7.Bd3 Bd6 8.Qe2 e5 9.0-0.

4.Nf3 Be4 5.Nc3 (5.b5 Nf6 6.Nc3 Bc5 7.Bd3 Bd3 8.cd3 a6 9.Qa4) 5...Bg6 6.b5 Nf6 7.Ne5 Bd6 8.Qf3 c6 9.Ng6.

4.Nf3 Nf6 5.e5 (5.b5 Ne4 6.Nc3 Nd6 7.Bd3 a6 8.a4 Be7 9.0-0) 5...Nd5 6.b5 a6 7.c4 Nf4 8.g3 Ng6 9.Bg2.

4.Nf3 h6 5.d3 Nf6 (5...Bb4!? 6.Nbd2 Nf6-/+) 6.a3= Be7 7.Nc3 c6 (7...c5 8.bc5 bc5 9.e5=) 8.Be2 (8.e5 Nd5+/–) 8...d5 9.e5 Nfd7 10.Qd2 d4 (10...0-0 11.0-0+=) 11.Ne4 Qc7 (11...c5!? 12.Nd6 Bd6 13.ed6 Nc6+=) 12.Nd4 Ne5 13.0-0 Nbd7 (better is 13...Ned7!?+/–) 14.f4+- Ng6? (14...c5 15.Nb5 Qc6 16.fe5 Qb5+-) 15.f5 ef5 (15...Bg5 16.Ng5 (16.fg6 Bd2 17.gf7 Ke7 18.Nd2 Nf6+=) 16...hg5 17.fg6 Qh2 18.Kf2 Qh4 19.g3 Qh2 20.Ke1 Qg3 21.Kd1+-) 16.Nf5 0-0-0 17.Ne7 (17.Bg7?! Rh7+-) 17...Ne7 18.Rf7 Ng6 (18...Rhe8 19.Rg7 c5+-) 19.Bh5 Nge5 (19...Nh4 20.Qf2 g6 21.Bh8 Rh8 22.Nf6 gh5 23.Nd7+-) 20.Re7 Qd6 (20...Qb8 21.Qe3 c5 22.bc5 Be4 23.Qe4 Nc5 24.Be5 Ne4 25.Bg4 Rd7 26.Bb8 Kb8 27.Bd7 Nf6+-) 21.Nd6 Kb8 22.Nb7 Kb7 23.Be5 Kc8 24.Qc3 c5 (24...Nc5 25.bc5 Rd3 26.Qd3 Rf8 27.Qd7) 25.Qc4 Rhf8 (25...Rdf8 26.Qd5 Rf1 27.Rf1 Ne5 28.Qa8) 26.Qa6 1–0. Janek – tobokin, internet, 2017.

4.Bg7+- f6 5.Bh8 Nh6 6.c3 Kf7 (6...Nf7 7.cb4 Nh8 8.d4+-) 7.cb4 Kg8 (7...Qh8 8.Qc2 f5 9.d4+-) 8.Bf6! Qf6 9.Nc3 d6 (9...a6 10.Rb1+-) 10.Rc1 Bb7 11.Nb5 Na6 (11...Nc6 12.Nc7 Rc8 13.Nb5+-) 12.Nc7 Rc8 13.Na6 Ba6 (13...Rc1 14.Qc1 Ba6 15.Qc3 Qc3 16.dc3+-) 14.e3 (better is 14.Rc8 Bc8 15.e3+-) 14...Bf1 (14...Rc1 15.Qc1 Bb7+-) 15.Rc8 Kg7 16.Rc7 Kg6 17.Qc2 (17.Qc2 Nf5 18.Rf1+-) 1–0. pcmvr – cervejarj, net–chess.com, 2017.

4.Bg7+- Nf6 5.Bh8 Bb7 6.e3 Nd5 (6...Nc6 7.a3 Be7 8.d4+-) 7.Be2 (7.c3 Bd6+-) 7...Nc6 (7...f6 8.c3 Be7 9.Qc2+-) 8.0-0 f6 9.c4 Nde7 (9...Nf4 10.ef4 Kf7 11.Ne5 Ne5 12.fe5 Qh8 13.Qa4+-) 10.Bf6 d5 (10...Kf7 11.Bc3+-) 11.d4 (11.a3 Ba5+-) 11...Qd6 (11...Qd7 12.Nbd2+-) 12.Ne5 (12.Ng5 Qd7+-) 12...0-0-0 (12...dc4 13.a3 Ng8 14.Bh5 Kf8 15.Bh8+-) 13.Nf7 (13.Nf7 Qd7 14.Nd8 Qd8 15.a3+-; 13.a3 Ba5 14.Nf7 Qd7 15.Nd8 Qd8 16.cd5 Qd5+-) 1–0. Bommert,Christian – Krueger,Sven, Dortmund ABC Anfaenger, 2002.

(--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6).

4.e3 a5 5.b5 (---> 1.b4 a5 2.b5 b6 3.e3 Bb7 4.Bb2 e6 5.Nf3).

4.e3 Nc6 5.a3 Nf6 (--> 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Nc6).

4.e3 Nf6 5.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3).

4.e3 Nf6 5.a3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7).

4.e3 Nf6 5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 d6 9.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 d6 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1).

4.e3 Nf6 5.b5 Be7 6.a4 0-0 7.c4 d5 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0 8.a4).

4.e3 Nf6 5.b5 Be7 6.c4 0-0 7.Be2 d5 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 d5 7.Be2 0-0).

4.e3 Nf6 5.b5 Be7 6.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7).

4.g3 Nc6 5.a3 Nf6 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Nc6).

4.g3 Qe7 5.a3 Nf6 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Qe7).

4.g3 Nf6 5.Bg2 Be7 6.a3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Be7 6.Bg2).

4.e3 Nf6 5.b5 Bb7 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

4.g3 Nf6 5.a3 a5 (5...c5 6.b5=) 6.b5 Bb7 7.Bg2 Be7 8.0-0 0-0 9.d3 Qe8 (9...c6 10.c4=) 10.e3 d6 11.c4 Nbd7 (11...e5 12.Nc3=) 12.Nd4 Bg2 13.Kg2 Nc5 14.Nc6 Nfd7 15.Ne7 (15.d4 Ne4+=) 15...Qe7= 16.a4 (16.d4 Qf6=) 16...e5 (16...Rac8 17.Nc3=) 17.Nc3 Nf6 (17...Qf7 18.Nd5 Rac8 19.f3=) 18.d4 ed4 19.ed4 Nce4 20.Re1 Qf7 21.Qd3 (21.d5 Rae8=) 21...Rae8 22.f3 Nc3 23.Bc3 d5 (23...f4 24.d5=) 24.c5 g6 (24...f4 25.g4= (worse is 25.gf4 Nh5 26.Bd2 Nf4 27.Bf4 Qf4+=)) 25.Re8 (25.Bd2 Nh5+=) 25...Re8 26.Re1 Re1 (26...f4 27.Re8 Ne8 28.Bd2 fg3 29.hg3+=) 27.Be1 Qe7 (27...Nd7 28.Qe3+=) 28.Bf2 Kf7 29.Qe3 Nd7 30.Qe7 Ke7 31.Be3 Nf8 (31...bc5 32.dc5 Kd8 33.Bd4+=) 32.Kf2 (32.Bg5 Ke8 33.c6 Ne6+=) 32...Ne6= 33.c6 g5 34.Ke2 Kf6 35.Kd3 h5 36.h3 ½–½. Agrest,Roman (2070) – Halleroed,Ralph (2125), Schack–SM, 2008. (=1.Nf3 b6 2.b4 e6 3.Bb2 f5)

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.Nf3).

4.a3 Bb7 5.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3).

4.a3 Bb7 5.g3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3).

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.Nf3).

4.d4 Bb4 5.c3 Be7 6.Nbd2 Bb7 7.Qc2 d5 8.c4 c6 9.e3=+ Nbd7 10.Be2 0-0 11.0-0-0 c5 12.g4 Rc8 13.h3 dc4 14.Qc4?? cd4 15.Nd4 Rc4 (15...Rc4 16.Nc4 Bh1 17.Rh1 Qc7-+; 15...Bh1 16.Rh1 Rc4 17.Nc4-+) 0–1. Matthias – kalle, mySchach.de, 2004.

4.g3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6).

4.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3).

4.Nf3 Nc6 5.a3 Nf6 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Nc6).

3.a3 a6 4.e3 cb4 5.ab4 Nf6 6.c3 g6 7.Nf3 Bg7 0–1. ekosachro (2435) – danielro (2290), net–chess.com, 2011.

3.a3 Qb6 4.Nf3 Nf6 (4...Nc6 5.Nc3 cb4 6.ab4 Nb4 7.e3=+) 5.Nc3 (5.Bf6!? gf6 6.bc5 Bc5 7.e3=) 5...cb4=+ 6.Na4 Qc6 7.ab4 Bb4 8.Bf6 gf6 9.c3 Be7 10.g3 (10.Nd4 Qc7=+) 10...d5 11.Bg2 b5 12.Nb2 a6 13.0-0 Qb6 14.Qb1 Bb7 15.e4 (better 15.c4!?-/+) 15...de4-+ 16.Nd4 f5 17.Nc4 Qc7 18.Na5 Bd5 19.d3 (19.f3 e3!-+) 19...Qc3 20.de4 Bc4?? (better 20...fe4 21.Nab3 f5-+) 21.Nc4 Qd4 (21...bc4 22.Qb7 Qd4 23.Rfd1+- (23.Qa8?! 0-0+/-); 21...Qc4 22.Nb5 0-0 23.Rc1 Qb5 24.Qb5 ab5 25.Ra8 fe4 26.Be4+-) 22.ef5 Ra7 (worse 22...bc4 23.Ba8 0-0 24.fe6 fe6 25.Ra4+/-) 23.Ne3 e5 (23...0-0!?=+) 24.Rd1= Qb6 25.Nd5 Qc5? (25...Qd6!?+=) 26.f6 (better 26.Rc1 Qd6 27.Rc8 Bd8 28.Qb4 Qb4 29.Nb4+-) 26...Bd6?? (26...Bd8 27.Qf5 Nd7+-) 27.Qf5 (27.Rc1 Nd7+-) 27...Nd7 (27...Rd7 28.Rac1 Qa7 29.Nb4+-) 28.Rac1 Qa3 (28...Rg8+-) 29.Rc8 1-0. black_bishop_88 (2635) - dociv (2030), lichess.org, 2020. (=1.a3 c5 2.b4 e6 3.Bb2)

3.a3 Nc6 4.bc5 f6 (4...e5!?=) 5.d4+- d6 6.c4 (6.cd6!? Bd6 7.e4+-) 6...dc5= 7.d5 ed5 8.cd5 Ne5 (8...Qb6 9.Bc3 Ne5 10.e4+=) 9.e4+= b6? (9...Bd6 10.Nf3+=) 10.Qc2 (better 10.Be5 fe5 11.Qh5 Ke7 12.Qe5 Kf7 13.Qf4 Qf6 14.Qc7 Qe7 15.Qe7 Ne7 16.Nf3+-) 10...Ba6?? (better 10...Bd6=) 11.Ne2 (better 11.Ba6 Bd6 12.Ne2+-) 11...Qc7?? (11...Nd3 12.Kd2 Nf2 13.Qa4 Kf7-/+) 12.Nd2?? (12.Qa4 b5 13.Qa6 Nd3 14.Kd2 Nf2+-) 12...0-0-0?? (better 12...Nd3!? 13.Kd1 Nf2 14.Ke1-+) 13.0-0-0?? (13.Nf4 Bf1 14.Kf1 Qf7+-) 13...Bd6?? (13...Nd3 14.Kb1 Nf2 15.Nf4 Bf1 16.Rhf1 Nd1 17.Qd1-/+) 14.Nc4?? (better 14.Nf4 Bf1 15.Rhf1+-) 14...Nc4-+ 15.Bf6?? (15.Ng3 Bf4 16.Kb1-+) 15...Nf6 16.e5 (16.g3 Be5 17.Nc3 Bc3 18.Bc4 Bc4 19.Qc3 Be2-+) 16...Be5 17.f4 (17.Qa4 Bb5! 18.Qb3 Nd5-+) 17...Bd6 (better 17...Bb2 18.Qb2 Nb2 19.Kb2 Nd5 20.Nc3 Bf1 21.Nd5 Rd5 22.Rhf1 Rd1 23.Rd1-+) 18.Nc3 (18.g3 Ne3 19.Qa4 Be2 20.Be2 Nd1 21.Rd1 Nd5 22.Bf3-+) 18...Bf4 19.Kb1 Na3 20.Kb2 Nc2 21.Kc2 Bf1 (21...Bf1 22.Rhf1 Ng4-+) 0–1. pat_cash87 – advice01, lichess.org, 2020.

3.a3 Qf6 4.Bf6 Nf6 5.b5 a6 6.e3 ab5 (6...d5 7.ba6 ba6 8.c4+-) 7.Bb5 g6 (7...Be7 8.Qe2+-) 8.Nf3 Bg7 9.c3 0-0 10.d4 d6 11.0-0 b6 12.Nbd2 Bb7 (12...d5 13.Qe2+-) 13.a4 (13.Nc4 Nd5 14.Qb3 Rd8+-) 13...Nd5 14.Qc2 Rc8 (14...Rd8 15.Nc4 Na6 16.e4+-) 15.Rab1 (better 15.Nc4 cd4 16.cd4 Ra7+-) 15...cd4 16.c4 (worse 16.Nd4 Nc3 17.Rfc1 Nb1 18.Qc8 Bc8 19.Rc8 Bf8 20.Nb1 Kg7+-; worse 16.ed4 Nc3 17.Qd3 Nb1 18.Rb1 Bf3 19.Nf3 Nc6+-) 16...Nc3 17.Rbc1 (better 17.Rbe1 Nb5 18.ab5 d5+-) 17...Ne2 18.Kh1 Nc1 19.Rc1 de3 20.fe3 Bh6 (20...Na6 21.Ne4 Rd8 22.Rf1+-) 21.Re1 Nc6 (21...Na6 22.Ne4 Be4 23.Qe4+-) 22.Qd3 (22.Ne4!? Rd8+-) 22...Rd8 23.Nd4 (23.Rb1 Ne7+-) 23...Ne5 24.Qf1 Bg7 25.N2f3 Ng4 26.h3 Nf6 27.Nc6 Rf8 (27...Bc6 28.Bc6 Rac8 29.Bb5+-) 28.Nfd4 Ne4 (28...Kh8 29.Qf2+-) 29.Qf3 (29.Qf4 d5 30.cd5 ed5 31.Ne7 Kh8+-) 29...Nc5 30.Rf1 f5 31.Ne6! Ne6 32.Ne7 Kf7 33.Qb7 Rab8 34.Nf5?? (better 34.Qa7 Ra8 35.Qb6 Ke7 36.Qb7 Kf6 37.g4+-) 34...Rb7-/+ 35.Nd6 Ke7 36.Rf8 Kd6 37.Rf1 (37.Re8 Bh6-+) 37...Re7 38.Rd1 Ke5 (38...Kc7!? 39.g3-+) 39.Rd5 Kf6 (39...Ke4 40.Rd6 Ke3 41.Rb6-+) 40.Rd7? (better 40.Rd6-/+) 40…Rd7-+ (40...Rd7 41.Bd7 Bh6-+) 0-1. korse (2610) - SantosBarrios (2635), Rated bullet game, lichess.org, 2024. (=1.a3 e6 2.b4 c5)

3.b5 Qb6 4.c4 a6 5.a4 ab5 6.cb5 Nf6 7.e3 d5 8.Nf3 Nbd7 9.d4 c4 10.Nc3 Be7 (10...Bb4!?-/+) 11.Be2 0-0 12.0-0 Bb4 13.Qc2 Bc3 (better is 13...Re8!?=) 14.Bc3+= Ne4 15.Rab1?? (better is 15.Bb4 Nd6 16.a5+/–) 15...Nc3-/+ 16.Qc3 Ra4 17.Bd1 Ra8 18.Bc2 Nf6 19.Qd2 Bd7 20.Ne5 Be8 (20...Bb5?! 21.Qb4 Ra5 22.Ba4 Ra4 23.Qa4 Qd4 24.ed4 Ba4 25.Rb7=) 21.Qe2 Ne4?? (21...Bb5 22.Rb4 Ra5 23.Rfb1-/+) 22.f3?? (better is 22.Be4 de4 23.Nc4+=) 22...Nf6 23.Qf2 Bb5 24.Qh4 h6 25.Rb4 c3 26.Rfb1 Ra2?? 27.Rb5+- Qa6 28.Bd3 Qa3 29.R5b3 Qa5 30.Rb5?? Qa4?? 31.R5b4 Qa5 32.Rb5?? Qa4?? 33.R5b4?? Qa5 34.Ng4?? Ng4= 35.Qg4? Rd2-+ 36.Rb5 Qa2 37.h4?? Rd3-+ 38.f4 c2 39.R1b2 Qa1 40.Kh2 c1Q 41.Rb1 Qab1 42.Rb1 Qb1 43.h5 Re3 44.f5 Qf5 45.Qf5 ef5 46.Kg1 Re4 47.Kf2 b5 48.Kf3 b4 49.g4 b3 (50.g5 hg5 51.Kg2 b2 52.h6 Re2 53.Kf1 Rfe8 54.h7 Kh7 55.Kg1 b1Q) 0–1. slavisa10 – migottaichibolz9, caissa.com, 2004.

3.b5 c4 4.e4 Qc7 (better is 4...d5!?=) 5.Qe2+/– a6 6.a4 (6.Qc4!? Qc4 7.Bc4 ab5 8.Bb5+/–) 6...ab5 7.ab5 Ra1 8.Ba1 Qa5 9.Qc4 Nf6?? (better is 9...Qa1 10.Qc8 Ke7+=) 10.Qc8+- Ke7 (10...Qd8 11.Qb7 Be7 12.Bd4+-) 11.Bc3 (11.Be5 Qb4 12.Nc3 Ne4+-) 11...Qa7 (11...Qa2 12.Bb4 d6 13.Qc7 (13.Qb8?! Qb1 14.Ke2 Qb4 15.Qb7 Kd8+-) 13...Nfd7 14.Nc3 (worse is 14.Qd6 Ke8 15.Nc3 Qa1 16.Nd1 Bd6 17.Bd6 Qa4+=) 14...Qa1 15.Ke2+-) 12.Bb4 (12.Bb4 d6 13.e5+-) 1–0. GuestKVNL – GuestBRZJ, freechess.org, 2017.

3.b5 d6 4.c4 a6 5.a4 b6 6.e3 a5 7.Nc3 Bb7 8.Nf3 Nd7 9.Be2 h6 10.d4 cd4 11.ed4 Ngf6 12.0-0 Be7 13.d5 e5 14.Bd3 Rc8 15.Rc1 Nc5 16.Bc2 Qd7 17.Ba3 e4 18.Bc5 dc5 19.Be4 Ne4 20.Ne4 0-0 21.Ne5 Qf5 22.d6 Be4 23.de7 Rfe8 24.Nc6 Bc6 25.bc6 Re7 26.Re1 Rec7 27.Rc3 Rc6 28.Rce3 Re6 29.Re6 fe6 30.Qd7 Rf8 31.Qe6 Kh7 32.Qf5 Rf5 33.Re6 Rf4 34.Rb6 Rc4 35.g3 Ra4 36.Rb5 c4 37.Rc5 g5 38.Kg2 Kg6 39.h3 h5 40.Kh2 g4 41.hg4 hg4 42.Kg2 Kf6 43.Rc6 Ke5 44.Rg6 c3 45.Rg4 Rg4 0–1. A_VB – flamic77, lichess.org, 2019.

3.b5 f6 (--> 2.Bb2 f6 3.b5 c5).

3.b5 Nf6 4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 d5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

3.c3 b6 4.a3 Bb7 5.e3 d5 6.Nf3 Nf6 7.Be2 Bd6 8.h3 0-0 9.0-0 Re8 10.d3 e5 11.Nbd2 e4 12.de4 de4 13.bc5 ef3 14.cd6 fe2 15.Qe2 Qd6 16.Rad1 Qc6 17.Nf3 Nbd7 18.c4 a5 19.Bf6 Nf6 20.Qd3 h6 21.Rd2 Rad8 22.Qd8 Rd8 23.Rd8 Kh7 24.Rfd1 g5 25.R8d6 Qa4 26.Rf6 Qd1 27.Kh2 Bf3 28.Rf3 Kg6 29.Kg3 Qa4 30.e4 Qc4 31.Re3 b5 32.f3 Qc7 33.Kf2 Qc5 34.Ke2 b4 35.ab4 ab4 36.e5 Qc2 37.Ke1 b3 0–1. Phomopsis – wilcopro, lichess.org, 2018.

3.bc5 d6 4.cd6 Bd6 5.Bg7 Qb6 6.Bh8 Qb2 (6...Nd7+-) 7.Bb2 f6 8.e3 Nc6 9.Qh5 Kd8 10.Qh7 Nce7 11.h4 (11.Qd3!? Kc7+-) 11...Bd7 12.h5 Rc8 13.h6 Rc2 14.Qc2 Nh6 15.Rh6 Bc6 16.Bf6 Kd7 17.Rh7 Bb5 18.Bb5 Kd8 19.Rh8 1–0. Panza (2490) – jems123, ChessWorld.net, 2007.

3.bc5 f5 4.e3 h5 (4...Nf6 5.d4+/–) 5.d4 Nc6 6.Nf3 g5?? (better is 6...b6+/–) 7.d5+- (7.d5 Rh7 8.dc6 bc6 9.h4+-) 1–0. Wall,Bill – Guest2732, internet, 2003.

3.bc5 Nf6 4.d4+=.

3.bc5 Qg5 4.Nf3 Qc5 5.Ba3 Qf5 6.Bf8 Kf8 7.e3 Qf6 (7...e5 8.d4 e4 9.Nfd2+=) 8.Nc3 d5 9.Be2 Nh6 10.0-0 Ke7 (10...Nc6 11.Rb1+=) 11.Rb1 Rd8 12.Nb5 (12.d4 Kf8+=) 12...Rd7 13.c4 a6 (13...dc4!? 14.Bc4 Nc6+=) 14.Qa4+- Nc6 (14...Kf8 15.cd5 ed5 16.Nbd4+-) 15.cd5 (15.Qa3 Ke8 16.Nd6 Rd6 17.Qd6 dc4 18.Bc4+-) 15...Rd5? (15...ed5 16.Nbd4+-) 16.Nc7 (better 16.Qa3!? Kd7 17.e4 Rb5 18.Bb5 Ke8+-) 16...Ra5 17.Qb3 Rb8 (17...Ra7 18.Rfc1 Kd7 19.Qb6+-) 18.Qb6 (better 18.Rfc1 e5 19.Nd5 Rd5 20.Qd5+-) 18...Kf8?? (18...Bd7 19.Rfc1 Qg6 20.Nd4+-) 19.Na6! ba6?? A deflection. (19...Ra6 20.Ba6) 20.Qc6 Eliminates the defender c6 20...Rb1 (20...Rab5 21.Rb5 ab5 22.Qd6 Qe7 23.Qb8 Qb7+-) 21.Qc8 Ke7 22.Qc7 (22.Rb1!? Rb5 23.Rc1 Qf3 24.Bf3 Kf6+-) 22...Kf8 (22...Ke8 23.Rb1 Rd5+-) 23.Rb1 Ra2 24.Rb8 (24.Rb8 Qd8 25.Qd8) 1–0. aravind555 – justin_andrew, lichess.org, 2019.

3.bc5 Qh4 4.e3 Nc6 5.Nf3 Qd8 6.d4 b6 7.Nbd2 Nf6 (7...bc5 8.dc5 f6 9.Nd4+-) 8.Bd3 (8.cb6 Qb6 9.Bc3 Nd5+-) 8...bc5+= 9.dc5 Bc5 10.0-0 0-0 11.Rb1 a5 12.Nb3 Bb6 (12...Be7 13.Ng5 e5 14.f4+=) 13.a3 a4 14.Nbd2 d5 (14...Bc5 15.Ng5 e5 16.Nde4 Ne4 17.Ne4+=) 15.Bf6 gf6 16.c3 (16.c4 Ne5 17.Ne5 fe5 18.Qg4 Kh8+=) 16...Bc5= 17.Ra1 Qa5 (17...Qd6 18.c4=) 18.Qc2+= f5 19.e4?? (better 19.Rfb1+=) 19...de4 20.Nc4 (20.Ne4!? fe4 21.Be4-+) 20...Qd8 21.Be4 fe4 22.Qe4 Qd5 (22...Bb7-+) 23.Qd5? (better 23.Qg4 Kh8 24.Rfd1-/+) 23...ed5-+ 24.Ncd2 (24.Ne3 Be6-+) 24...Bf5 25.Rfc1 (25.Rfd1 Rab8-+) 25...Rab8 26.Ra2 Rfe8 27.Nf1 (27.c4 d4-+) 27...Ne5 (27...Bd3 28.Rd1 Bc4 29.Raa1-+) 28.Ne5 (28.Nd4 Bd3-+) 28...Re5 29.Ng3 (29.Rd1 Rb3-+) 29...Bg6 (29...Bd3 30.h4-+) 30.Rd1 (30.Rd2 Ba3 31.Rcd1 Rb2 32.Rd5 Rd5 33.Rd5 Rb1 34.Nf1 Bb2-+) 30...Rb3 31.Rc1 (31.Ne2 Ra3 32.Ra3 Ba3-+ (32...Re2?! 33.Ra4 Be4 34.Ra5 Bf2 35.Kf1-+)) 31...Re8 (31...Bd3 32.h4-+) 32.Nf1 Ra3 33.Ra3 Ba3 34.Rd1 (34.Ra1 Bb2 35.Ra4 Re1-+) 34...Rd8 (34...Bb2 35.Ne3-+) 35.Rd2 (35.Ne3 Be4 36.f3 Bf3 37.gf3 Bc5-+) 35...Bc5 (35...Bc1 36.Rd4 a3 37.Ra4-+) 36.Ra2 (36.Ne3 a3 37.Nd5 a2 38.Ra2 Rd5-+) 36...a3 37.Rd2 (37.h3 Rb8 38.Nd2 Rb2 39.Ra3 Ba3-+) 37...Bf5 (37...Bb1!? 38.g4-+) 38.Ne3 (38.g4 Bb1-+) 38...Be6 (38...Be3!? 39.fe3 Bb1 40.c4-+) 39.c4 (39.Kf1 d4 40.cd4 Bd4-+) 39...d4 40.Kf1 (40.Nf1-+) 40...a2! 41.Rd1 (41.Ra2 de3 Annihilates a defender: e3) 41...d3 (41...de3 42.Rd8 Kg7 43.Rd1 Bc4 44.Kg1 ef2 45.Kh1 f1Q 46.Rf1 Bf1 47.h4 a1Q 48.Kh2 Bd6 49.Kg1 Bg3 50.h5 Bd3) 42.Nd5 Bd5 43.cd5 Rd5 (better 43...Rb8 44.g3 Rb1 45.Kg2 Rd1 46.Kh3-+) 44.Ra1 d2 (44...d2 45.Ke2 d1Q 46.Rd1 Rd1 47.Kd1 a1Q 48.Kc2 Qa4 49.Kd2 Qd4 50.Kc2 Qc4 51.Kd2 Bb4 52.Ke3 f5 53.f3 f4 54.Kf2 Qd4 55.Ke2 Qe3 56.Kd1 Qd2) 0–1. petrobbo (1995) – OrangAttackMan (1930), ChessWorld.net, 2015.

3.Nf3 cb4 4.e3 Nf6 5.Bd3 d5 6.0-0 Bc5 7.c4 dc4 8.Bc4 Nc6 9.d4 Bd6 10.Bd3 Bb8 11.Qe2 Qd6 12.e4 Nd4?? (better 12...Qe7=) 13.Nd4?? (better 13.Bd4 Qc7 14.a3+-) 13…Qh2 0-1. CronusCR (2155) - Schachmalanders (2190), Rated Bullet game, lichess.org, 2017.

3.Bg7?? cb4 (3...Bg7 4.c3 cb4 5.e3-+) 4.c3 (better 4.Bh8 d5 5.Nf3+-) 4...Bg7-+ 5.d4 bc3 6.Nc3 Qb6 7.Rc1 (7.e3 d5-+) 7...Qa5 (7...Bd4!? 8.e3 Bc5 9.Bd3-+) 8.e3 e5 9.Qg4 ed4?? (better 9...Bf6 10.Qh5 Nc6-+) 10.Qg7+- Qd5?? (10...dc3 11.Nf3 Nc6 12.Qh8 Kf8+-) 11.Nd5 d6 12.Rc8 Kd7 13.Qf7 (13.Qg4 f5 14.Qf5) 13...Kc8 (13...Ne7 14.Qe7 Kc8 15.Qc7) 14.Qc7 1-0. FeegLood (2700) – Chesshedron, lichess.org, 2016.

4.ab4 (--> 1.b4 c5 2.a3 cb4 3.ab4 e6 4.Bb2).

4.e3 ba3 5.Ba3 Ba3 6.Na3 Nf6 7.d3 (7.Nb5 0-0 8.Na7 d5=) 7...0-0 8.c4 Nc6 9.Qc2 (9.Nf3 d5-/+) 9...d5 10.0-0-0? (better 10.Nf3!?-/+) 10...dc4 (10...e5 11.Kd2-+) 11.Qc4 (11.Nc4 b5 12.Na3 Nb4-+) 11...Qa5 12.Nb5 Bd7 13.d4 (13.Nc3 Rfc8 14.Kb2 Nd4 15.ed4 Rc4 16.dc4 Qb4 17.Kc2 Ba4 18.Na4 Qa4 19.Kc1 Ne4-+) 13...Rac8 (better 13...Ne4 14.Nh3 a6-+) 14.Bd3 (14.Kb2 Ne4 15.Nh3-+) 14...Nb4 (better 14...Ne5 15.Nd6 Nc4 16.Bc4-+) 15.Bh7 (15.Nd6 Nd3 16.Rd3 Qa1 17.Kd2 Rc4 18.Nc4-+) 15...Nh7 16.Nc7 Rc7 (16...Rc7 17.Kd2 Rc4-+) 0–1. pat_cash87 – mohammeddaas, lichess.org, 2020.

4.e3 ba3 5.Ba3 d6 6.Nf3. pieeater – john1007, ChessWorld.net, 2012.

4.Nf3 Nf6 5.d3 ba3 6.Na3 Nc6 7.e4 Qa5 8.Qd2 Qd2 9.Nd2 Be7 (9...d5=+) 10.Nac4 (10.Nb5 0-0=+) 10...0-0 (10...d5 11.Nb6 Rb8 12.e5-/+) 11.f4 (11.e5 Nd5-/+) 11...d5 12.Ne3 (12.Nb6 Rb8 13.Nc8 Rfc8-/+) 12...de4 13.de4 Bc5 14.Nec4 b5 15.Na5 Na5 16.Ra5 Bb6 (better 16...Bd7!? 17.Bd3 Rfd8-/+) 17.Rb5= Rd8 18.Rg5 (18.Bd3 Be3 19.Bf6 gf6=) 18...Ne8 (18...h6 19.Bf6 hg5 20.Bd8 Bd8 21.fg5 Bg5 22.Nf3=+) 19.Bd3 Be3 (19...a5 20.Nc4 Bc7 21.g3=) 20.Rf1 Rb8 21.Be5 Rb6 22.Bc3 f6 (22...Rc6 23.Ba5 Nc7 24.Ke2=) 23.Ra5 Rb8 24.Ke2 Bb6 25.Ra2 Bb7 26.Nc4 (26.Ba5 Nd6+=) 26...Bc5 27.Rb1 (27.Ra5 Rdc8+=) 27...Rdc8 (better 27...Be4 28.Rb8 Bd3 29.cd3 Rb8=+) 28.Rab2+/- Bb6? (better 28...Rc7!?+/-) 29.Nb6+- (worse 29.Rb6 ab6 30.Rb6 Be4 31.Re6 Bg2-/+) 29...ab6 30.Bd2 (30.Bd4 Bc6+-) 30...Bc6 31.Be3 (31.Rb6 Rb6 32.Rb6 Kf7+-) 31...b5 32.Bc5 (32.c4 Nd6+-) 32...Bd7 (32...Be4 33.Rb5 Rb5 34.Rb5 Bg2 35.c4=) 33.Be3 e5?? (better 33...Bc6=) 34.fe5 fe5 35.Rb4 (35.c4!? Nd6 36.c5 Ne8 37.Bb5 Bb5 38.Rb5 Rb5 39.Rb5 Kf7+-) 35...Nd6 (35...Nc7 36.c4 Na6 37.Rb5 Bb5 38.cb5=) 36.R1b2 (36.c4!? Bg4 37.Ke1 bc4 38.Rb8 cd3 39.h3+-) 36...Rb7 37.Rb1 Rbc7 38.R1b2 (38.Ra1 Nc4 39.Bf2 Kf7=) 38...Be6 (38...Nc4 39.Bc4 Rc4 40.Kd2=+) 39.Rb1 (39.Bb6 Rc3=) 39...Bc4=+ 40.R1b2 (40.Kf3!?=+) 40...Ne4-/+ 41.Bc4 (41.Rc4 Rc4 42.Bc4 bc4-/+ (42...Rc4?! 43.Rb5 Nd6 44.Rc5=)) 41...Rc4 42.Rc4 bc4 (42...Rc4?! 43.Rb5 Nd6 44.Re5 Rc2 45.Kf3=) 43.Kf3 c3 (43...Nc3 44.Rb7-/+) 44.Rb7 (44.Rb5!? Nd2 45.Ke2=+) 44...Nf6 45.Bg5 e4 (45...Rc4 46.Bf6 gf6 47.g3-/+) 46.Ke3=+ Rf8 (better 46...Rd8 47.Bf6 gf6=+) 47.Rc7?? (47.Bf6 Rf6 48.Rc7 Rh6 49.Ke4 Rh2=) 47...h6 (better 47...Nd5 48.Ke4 Nc7-+) 48.Bf4?? (better 48.Bf6 Rf6 49.Rc3+=) 48...Nd5-+ 49.Kd4 (49.Ke4 Nf4 (49...Rf4?! 50.Kd5 Rf2 51.Rc3=) 50.Rc3 Ng2-+) 49...Nc7 (better 49...Nf4 50.Ke4 Ng2 51.Rc3 Rf4 52.Ke5 Rh4-+) 50.Be5 (50.Bc7 Rf2 51.Ke4 Rc2 52.Kd3 Rg2 53.Kc3-+) 50...Rf4 (better 50...Nb5 51.Ke4 Rd8-+) 51.Bf4+/- Ne6 52.Ke5 (52.Ke4 Nc5 53.Kd5+-) 52...Nf4? (better 52...Nc5+=) 53.Kf4+- g5 54.Ke3 (54.Ke4 Kf7+-) 54...Kf7 55.Ke4 Kg6 56.Ke3 g4 57.Kd3 g3 (57...Kf5 58.Kc3 Ke5+-) 58.h3 (worse 58.hg3 Kf5 59.Kc3 Ke5+-) 58...Kg5 59.Kc3 Kf4 60.Kd3 (60.Kd3 h5 61.Kd4+-) 1-0. Dikarkaz (2610) - SantosBarrios (2640), Rated bullet game, lichess.org, 2023.

4.a4 c4 5.e3 (5.e4 d5 6.Nc3 Bc5 7.ed5 ed5 8.Nd5=) 5...Qh4? (better is 5...d5!?= 6.d3 cd3 7.Bd3 Bb4 8.Nd2=) 6.Nf3+/– Qe4 7.Nc3 Qg4 8.Ne2 (better is 8.h3!? Qh5 9.Bc4+-) 8...d5+= 9.Ne5 Qh5 10.g3 f6 11.Nc4 (11.g4!? Qh6 12.Nf3=) 11...dc4-/+ 12.Nf4 (12.Nc3 Qc5-/+) 12...Qc5 (12...Qd1 13.Rd1 ab5 14.ab5-+) 13.Bg2 (better is 13.Bd4 Qc7 14.Qh5 Qf7 15.Qf7 Kf7 16.Bc4-/+) 13...e5?? (better is 13...Ne7-+) 14.Qh5+/– Ke7?? (better is 14...g6 15.Ng6! hg6 16.Qh8 Ne7+/–) 15.Ba3+- Nd7 (15...Qa3 16.Ra3 Nh6+-) 16.Bc5 Nc5 17.Nd5 Kd6 (17...Kd8 18.Qf7 Ne6+-) 18.Qe8 Ne7 19.Nb6 Rb8 20.Nc4 Kc7 (20...Ke6 21.d4 ed4 22.ed4 f5 23.dc5 g6+-) 21.b6 1–0. Trkn – shred, itsyourturn.com, 2000.

4.a4 d5 5.e3 (5.Nf3 Nf6 6.e3 Bd6 7.Be2 Nbd7 8.0-0+=) 5...Nf6 6.Nf3 Bd6 7.Be2 0-0 8.0-0=.

4.a4 Nf6 5.e3 (5.Nf3 d5 6.e3 Bd6 7.Be2 0-0 8.0-0+=; 5.ba6 ba6 6.Nf3 d5 7.Na3 Bd6 8.c4+=; 5.Nc3 d5 6.e3 e5 7.ba6 ba6 8.Rb1+=) 5...d5 6.Nf3 Bd6 7.Be2 ab5 8.ab5=.

4.e3 A) 4...Nf6 5.ba6 (5.Nf3 d5 6.ba6 ba6 7.Be2 Bd6 8.Na3+=; 5.Nc3 d5 6.Nf3 Bd6 7.Be2 e5 8.0-0+=; 5.Be2 d5 6.a4 Bd6 7.Nf3 ab5 8.ab5=) 5...Na6 6.Nf3 Be7 7.Nc3 0-0 8.Be2=; B) 4...d5 5.a4 (5.Nc3 Nf6 6.Nf3 Bd6 7.Be2 e5 8.0-0+=; 5.Nf3 Nf6 6.ba6 ba6 7.Be2 Bd6 8.c4+=; 5.Be2 ab5 6.Bb5 Bd7 7.Be2 Nf6 8.Nc3+=) 5...Nf6 6.Nf3 Bd6 7.Be2 ab5 8.ab5=.

4.e4 d5 5.ed5 (5.Qe2 Ne7 6.Nf3 ab5 7.ed5 Nd5 8.Qb5=) 5...ed5 6.Nf3 c4 7.ba6 Na6 8.Be2=.

6.Ba1 Qa5 7.Bc3 Qb5 8.Nf3 (8.e3 Qb6+=) 8...Nc6 9.e3 (9.e4 Qa4 10.Bd3 d5 11.ed5 ed5-/+) 9...Qb6 10.Bd3 (10.Na3 d5+=) 10...Nge7 (10...d5 11.0-0-/+) 11.0-0 (11.Na3 d5+=) 11...Nd5 (11...d5 12.Be2-/+) 12.Ba1 Ndb4 13.Be2 d5 14.Re1 Bd7 15.d3 (15.Nc3 c4-/+) 15...Qa5-/+ 16.Bb2 f6 (16...Qa2 17.Qc1+=) 17.c3 Na6 18.Qb3 (18.e4 d4+=) 18...Bc8 (18...b5 19.c4+=) 19.Nbd2 (19.Na3 Be7+=) 19...Be7 (19...Bd6 20.e4 Nc7 21.d4 cd4 22.Ra1=) 20.Ra1 Qc7 21.e4 de4 (21...c4 22.dc4 Nc5 23.Qc2 de4 24.Ne4 Ne4 25.Qe4=) 22.de4 (22.Ne4 0-0+=) 22...Na5 (22...0-0 23.Bc1+=) 23.Qa2 (23.Qb5 Nc6=) 23...Nc6 24.Qb3 0-0 25.Nc4 Kh8 (25...Rd8 26.Bc1=) 26.g3 (26.Nb6!?=) 26...e5+= 27.Ne3 Nab8 (27...Bd6 28.Nd5 Qf7 29.Bc1+=) 28.Nd5 Be6 29.c4 (29.Ba3 Rd8+=) 29...Bd5 (29...Qd7 30.Qb6+=) 30.ed5 (30.cd5 Nb4=) 30...Nd4 (30...Nb4!?+=) 31.Nd4+= ed4 32.Ra7 Attacking the backward pawn on b7 32...Qe5 (32...Rd8 33.Qb7 Qb7 34.Rb7+=) 33.Bf1 (better is 33.Bd3+=) 33...Na6?? (better is 33...Rd8=) 34.Qb7+- (34.Rb7?! Nb4=) 34...Nb4 (34...Rb8 35.Qe7 Qe7 36.Re7+-) 35.Qe7 Qe7 36.Re7 d3 (36...Kg8 37.Rc7 Na6 38.Rc6+-) 37.Bc3 Rd8 (37...Rb8 38.Bb4 cb4 39.Bd3+-) 38.Rb7 (38.Bb4 cb4 39.Bd3 g6+-) 38...h5 (38...Na6 39.Bd3 Kg8 40.Bf5+-) 39.Bb4 cb4 40.Bd3 Rc8 (40...Kg8 41.c5 Kf8 42.d6+-) 41.c5 Rc5 (41...b3+-) 42.Rb8 (42.Rb8 Rc8 43.Rc8) 1–0. DEFFM – GuestPYHW, freechess.org, 2018.

6.Ba1 Qa5 7.Nc3 d5=.

6.Ba1 Qa5 7.Nc3 Nf6 8.e3 d5 9.Nf3 (9.f4 c4=) 9...Be7 (9...Bd6 10.Ng5=+) 10.Be2= 0-0 11.0-0 Nbd7 12.Qb1 Qc7 13.Nd1 (13.Qa2 Qd6=) 13...b6 14.c4 Bb7 15.d4 (15.cd5!? Bd5 16.Nc3=+) 15...dc4-/+ 16.Bc4 (16.dc5 Qc5 17.Nc3 Ne5-/+) 16...cd4 17.Be2 de3 18.Ne3 Nc5 (18...Rc8 19.Bb2-/+) 19.Be5 Qc8 (19...Bd6 20.Bf6 gf6 21.Ng4-/+) 20.Qb2 Rd8 21.Rc1 Qd7 22.h3 (22.Nd4 Be4=+) 22...h6 (22...Bf3 23.gf3 Nd3 24.Bd3 Qd3 25.Bc7-+) 23.Qc2 (23.Nd4!?=+) 23...Be4-/+ 24.Qc3 (24.Qc4 Ne8-/+) 24...Qb7 (24...Bf3 25.Bf3 Qb5 26.Bc7-+) 25.Rd1 (25.Nd4 Rc8-/+) 25...Rd1 26.Bd1 Qd7 27.Be2 Qb7 (better 27...Bf3 28.gf3 Qa7-/+) 28.Bc4?? (28.Bd1 Bd3 29.Qb2-/+) 28...Ncd7 (better 28...Bf3!? 29.gf3 Qf3-+) 29.Nd2-/+ Ne5 30.Qe5 Bg6 31.Nf3 Bc5 32.Nd4 (32.Ne1 Qd7 33.Nf3 Be4-/+) 32...Qd7 (32...Be4 33.Ndc2-+) 33.Nc6 (33.Nb3 Bd6 34.Qd4 Qc7-/+) 33...Kh7 (33...Qd2 34.Qa1-+) 34.Be2? (34.Qb2-+) 34...Nd5?? (better 34...Qd2 35.Kf1 Bd3 36.Bd3 Qd3 37.Kg1 Ne4-+) 35.Nd5-/+ ed5 36.Bg4 f5 Black plans d4 37.Bf3 d4 38.Qe2 (38.Qf4 d3-/+) 38...d3 39.Qd2 (39.Qd1 Qe6-/+) 39...f4 (39...Qd6 40.Qc3-/+) 40.Ne5 (40.h4 Qf5-/+) 40...Qf5 (40...Qd4 41.Ng6 Kg6 42.h4-+) 41.Ng6 Qg6 (better 41...Kg6 42.Kf1 Bd6-/+) 42.Qf4= d2 43.Qd2 Bd6 (better 43...Qb1!? 44.Bd1 Qb5 45.Bc2 Kg8 46.Qd5 Kf8 47.Qf5 Ke7 48.Qe4 Kf7=) 44.Qe1 Kg8 45.Bd5 Kh7?? (better 45...Kf8+-) 46.Be4+- (46.Be4 Bc5 47.Bg6 Kg6 48.Qe6 Kh7 49.Qf5 Kg8 50.Qc5 bc5 51.b6+-) 1–0. BeepBeepImAJeep (2735) – gmtabito21 (2640), lichess.org, 2020.

6.Ba1 Qa5 7.Nc3 g6?? 8.Ne4+- Qb5?? (better is 8...f6 9.Nf6 Nf6 10.Bf6 Rg8+-) 9.Bh8 Qc6 10.Nf6 (10.Nc3 b5+-) 10...Nf6 11.Bf6 Na6 12.Nf3 Bd6 (12...Qa4 13.Bc3+-) 13.e3 Nb4 14.Be2 Nd5 (14...Qa4 15.c4 Qd1 16.Kd1+-) 15.Qa1 Nf6 16.Qf6 b5 (16...h6+-) 17.Ng5 Be7 (17...Qa8 18.0-0+-) 18.Qh8 Bf8 19.Qh7 Qg2 (19...Qd6 20.Qf7 Kd8 21.Qg6 Qe7+-) 20.Qf7 Kd8 21.Qf8 Kc7 22.Qf4 Kb6 23.Bf3 Qf3 24.Nf3 Bb7 25.Qd6 Ka5 26.Qc7 (26.0-0 Bd5 27.Ra1 Kb4 28.Qe5 Ba2 29.Qc3 Ka4 30.Ra2) 26...Ka6 (26...Kb4 27.0-0 Bf3 28.Rb1 Kc4 29.Qd7 Be4 30.Qe6 Bd5 31.Qg4 Be4 32.Qe4) 27.0-0 Bf3 (27...b4 28.Ra1 Kb5 29.Qb7 Kc4 30.Ne5) 28.Ra1 1–0. DEFFM – GuestRQTR, freechess.org, 2018.

6.Ba1 b6 7.e3 Nf6 (7...d5 8.Be2=) 8.Nf3 Be7 (8...d5 9.Be2=) 9.c4 (9.d4 d5=) 9...0-0 10.Be2 Ne4 (10...d5 11.d3=) 11.d3 Ng5 (11...Nf6 12.0-0=) 12.0-0 (12.Ng5 Bg5 13.Bf3 d5=) 12...d5 13.Ne5 (13.Nfd2 f6+=) 13...dc4 (13...f6 14.Nf3=) 14.Nc4+= Bd7? (better is 14...f6!?+=) 15.h4+- Nh3 16.gh3 Bh4 (16...Bb5 17.Qb3 Bc4 18.dc4 Bh4+-) 17.Qb3 (17.Nba3 e5 18.Bg4 f6+-) 17...Qg5 (17...Bc8 18.Bf3+-) 18.Kh2 e5 (18...Qd8 19.Be5+-) 19.Be5 Qf5 (19...Qh6+-) 20.Bg4 Qf6 (20...Qg6 21.Rg1 Qh6 22.Bd7 Nd7 23.Rg7 Qg7 24.Bg7 Kg7+-) 21.Bf6 (21.Bf6 Bf6 22.Nb6+-) 1–0. DEFFM – GuestYGGX, freechess.org, 2018.

6.Ba1 d5 7.e3 b6 8.c4 Bb7 9.Nf3 Nf6 10.d4 dc4 (10...cd4 11.Bd4 Bb4 12.Nbd2=) 11.Bc4 Nbd7 12.0-0 Bd6 13.Nbd2 Qc7 14.Qb3 0-0 15.Rc1 cd4 16.ed4 (16.Bd4 Rc8=) 16...Qb8 (16...Bf4 17.Rc2 Ra8 18.Bc3=+) 17.Bb2 Nd5 18.h3 Nf4 19.Qd1 Bd5 (19...Rc8 20.Qb3=+) 20.Be2 (20.g3!? Nh3 21.Kg2 Nf2 22.Kf2 Bg3 23.Ke2=) 20...Qb7-/+ 21.Bf1 Nf6 (21...Ra8 22.g3 Ra2 23.Rc2=+) 22.Bc4 (22.g3 Ng6=+) 22...Bc4 (22...Bb4 23.Bc3 Ba3 24.Ra1-/+) 23.Nc4=+ Bb8 24.Qd2? (24.Nce5 Qd5 25.Ba3 Re8=+) 24...N6d5 (better 24...Nh3!? 25.gh3 Qf3-+) 25.Nce5 Rc8 26.Nc6 (26.g3 Be5 27.Rc8 Qc8 28.de5 Ng6= (worse 28...Nh3 29.Kh2+/-)) 26...Bd6=+ 27.Nfe5 Be5 (27...Ra8!?=+) 28.de5+= Qd7?? (28...Ra8 29.Rc4 Ng6 30.Bd4+=) 29.Kh2 (better 29.Ne7! Ne7 30.Qd7 Ne2 31.Kh2 Nc1 32.Bc1+-) 29...Ng6+= 30.g3 f6 (30...Ra8 31.Bd4=) 31.ef6+= gf6 32.Re1 e5?? (32...Ra8 33.Bd4+=) 33.Qd3 (better 33.Rd1 Kf7 34.Qd5 Qd5 35.Rd5+-) 33...Qe6 34.Rd1 Nde7 35.Qd7 (better 35.Ne7 Ne7 36.Ba3=) 35...Qd7-/+ 36.Rd7 Kf7?? (better 36...Nc6 37.bc6 Rc6-/+) 37.Ne7+/- Ne7 38.Rb7 (better 38.Ba3 Re8 39.Rb7+/-) 38...Rc4?? (better 38...Ke8+=) 39.Bc1 (better 39.Ba3 Ke6 40.Re7 Kd5 41.Rd7 Ke4 42.Rb7+-) 39...Ke6?? (better 39...Rc1 40.Rb6 Rc2-+) 40.Rb6+/- (40.Rb6 Kf5 41.Ba3+-) 1-0. ClayPigeons (2170) - VKcarlsen (2250), Rated Bullet game, lichess.org, 2020.

4.e3 Bb7 5.Nf3 d5 6.c4 Nd7 7.cd5 ed5 8.Be2 Ngf6 9.0-0 Bd6 10.Nc3 0-0 11.Qc2 Rc8 12.Qf5 Re8 13.Rac1 h6 14.a4 Ne5 15.Nd1 (15.d4 Qd7 16.Qd7 Ned7 (16...Nfd7? 17.de5 Be5 18.Ne5 Ne5 19.Rfd1+-) 17.dc5 bc5= (worse 17...Rc5 18.Ba3+/-)) 15...Qc7 16.Ne5 Be5 17.Be5 Re5 18.Qh3 d4 19.d3 Rg5 20.Bf3 Bf3 21.Qf3 Ng4 22.Qh3 g6 (22...Re8 23.ed4 Qf4 24.Rc4=+) 23.f4 Nh2? (better 23...Ne3 24.fg5 Nf1 25.gh6 Re8=) 24.Qh2+- (worse 24.Kh2 Rh5 25.Qh5 gh5 26.ed4 Qd6-+) 24...Rh5 25.Qg3 de3 26.Ne3 Qd7 27.Rfd1 Qd4 (27...Rd8 28.Rc4+-) 28.Rc4 Qb2 29.Qf3 Rc7 (29...Rd8 30.f5+-) 30.f5 Rg5 31.Rf1 Kh7 32.Rh4 Qd2 (32...Re7 33.Qf4 f6+-) 33.Rd1 Qc3 (33...Rg2 34.Ng2 Qg5 35.fg6 fg6 36.d4+-) 34.Qf4 (34.Qf4 Qf6 35.Qc7 gf5 36.d4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Nf6 5.Nf3 d5 6.Be2 Nbd7 7.c4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Nbd7).

4.Nf3 Bb7 5.g3 a6 6.Nc3 (6.ba6 A) 6...Na6 7.Bg2 (7.c4 Bf3 8.ef3 Nf6 9.Be2 Be7 10.Nc3 0-0+=; 7.Nc3 Nf6 8.Bg2 d5 9.0-0 Be7 10.a4 0-0+=; 7.h3 Nf6 8.c4 Bf3 9.ef3 Be7 10.f4 0-0+=) 7...Nf6 8.0-0 Be7 9.Nc3 d5 10.a4 0-0+=; B) 6...Ba6 7.Bg2 (7.d3 d5 8.Bg2 Nf6 9.c4 dc4 10.Nfd2 Ra7=; 7.e4 Bf1 8.Kf1 Nf6 9.e5 Ng4 10.h3 Nh6=; 7.Nc3 d5 8.Bg2 Nf6 9.a4 Be7 10.0-0 Nc6+=) 7...d5 8.d3 Nf6 9.c4 dc4 10.Nfd2 Ra7=; C) 6...Bf3 7.ef3 Nf6 8.Nc3 Be7 9.Rb1 Na6 10.a3 Nc7+=) 6...ab5 (6...Nf6 7.Bg2 (7.e3 d5 8.ba6 Ba6 9.Bg2 Be7 10.d3 b5+=; 7.ba6 Na6 8.Bg2 d5 9.0-0 Be7 10.Ne5 Nd7+=; 7.a4 d5 8.ba6 Na6 9.Bg2 Be7 10.0-0 0-0+=) 7...d5 8.ba6 Na6 9.0-0 Be7 10.Ne5 Nd7+=; 6...d5 7.ba6 (7.e3 Nf6 8.ba6 Ba6 9.Nb5 Be7 10.Be2 0-0+=) 7...Na6 8.e3 d4 9.ed4 cd4 10.Nb5 d3+=) 7.Nb5 Bc6 (7...Bf3 8.ef3 Nc6 9.c4= f6 10.f4 g6+=) 8.a4 (8.Nd6 Ke7 9.Ne5 Kd6 (9...Nh6 10.Nc6 Nc6+=) 10.Nf7 Ke7+=) 8...Bb5 (8...d5 9.Bg2= f6 10.d3 Nh6=) 9.ab5+= Ra1 10.Qa1 Ne7 (10...Nf6!?+=; 10...f6+=) 11.Bg7+/– Bg7 (11...Rg8 12.Bf6+/–) 12.Qg7+- Rg8 (12...Ng6 13.Ne5 Rf8 14.Ng4+-) 13.Qh7 d5 14.h4 Qd7 (14...Nd7 15.Ng5 Rf8 16.e3+-) 15.Ne5 Rg7 (15...Qa7 16.Qf7 Kd8+-) 16.Qg7 (16.Qg7 Qb5 17.Qh8 Ng8 18.Qg8 Ke7 19.Qf7 Kd8 20.e3 Qb1 21.Ke2 Qb5 22.c4+-) 1–0. Janek – Vesely, internet, 2016.

4.Nf3 Nf6 5.e3 Be7 6.Be2 0-0 7.0-0 Bb7 8.a4 d5 9.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

4.a4 Nf6 5.e3 c4 (---> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 c4).

4.c4 d4 5.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 d4).

4.e3 Nd7 5.Nf3 Ngf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Nbd7).

4.e3 Nd7 5.Nf3 Ngf6 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3).

4.e3 Nf6 5.Nf3 Nbd7 6.c4 dc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 dc4).

4.Bd4 Nc6 5.Be3 Bc5 6.Bc5 Qc5 7.Nc3 Nf6 8.Nf3 b6 9.e3 0-0 10.Bd3 Nb4 11.Ne4 (11.Be2 Bb7=+) 11...Qe7 (better 11...Ne4 12.Be4 f5-/+) 12.c3?? (better 12.Nc3=+) 12...Nd3-+ 13.Ke2 Nc5 (better 13...Ne4 14.Qa4 d5-+) 14.Nf6 (14.Nc5 Qc5 15.Ke1 Bb7-+) 14...Qf6 15.Re1 (15.Kf1 Ba6 16.Kg1 d6-+) 15...Bb7 (better 15...Ba6 16.d3 Bd3 17.Qd3 Nd3 18.Kd3-+) 16.Kf1 (16.d3 Qc3 17.Qd2 Qf6-+) 16...Nd3 17.Nd4 (17.Qe2 Ne1 18.Ne1 d6-+) 17...Ne1 (17...Qf2) 18.Qe1-+ Qg6 19.f3 e5 20.Ne2 f5 21.Ng3 (21.Qg3 Qd6-+) 21...f4 22.Ne4 (22.ef4 ef4 23.Nh1-+) 22...Be4 23.fe4 (23.ef4 Rf4 24.Qg3 Qd6-+) 23...Qe4 (better 23...fe3 24.Kg1 Rf2 25.Qf2 ef2 26.Kf2 Qe4 27.Kg1-+) 24.ef4 Qe1 25.Re1 ef4 (25...Rf4 26.Ke2-+) 26.Re7 d5 27.Rd7 f3 28.g3 (28.Kf2 fg2 29.Kg2 Rfd8-+) 28...f2 (28...Rae8 29.Rb7 f2 30.Rg7 Kg7 31.g4 Re1 32.Kg2 f1Q 33.Kg3 Qf2 34.Kh3 Rf3) 29.Rd5 (29.Re7 d4 30.Re2-+) 29...Rae8 30.g4 (30.Rf5 Rf5 31.g4 Re1 32.Kg2 f1Q 33.Kg3 Qf2 34.Kh3 Rf3) 30...Re1 31.Kg2 f1Q 32.Kg3 Qf3 (32...Qf2 33.Kh3 Rf3) 33.Kh4 Qd5 (33...Qd5 34.c4 Qd8 35.Kh3 Qg5 36.c5 Rf3 37.Kg2 Qg4; 33...Qf2 34.Kg5 Qf6 35.Kh5 Qh6) 0–1. aravind555 (1770) – p12d5a (1825), lichess.org, 2020.

4.Bd4 Nc6= 5.Be3 Bc5 6.Bf4 Bd4 7.c3=+ Bf6 8.e3 d5 9.Ne2 Qb6 10.d4= Bd7 11.Nd2 Qd8 12.Nb3 b6 13.Ng3 g5 14.Bd6+= Qc8 15.Nh5 Nce7 16.Nf6 Nf6 17.Be5 Neg8 18.Nd2 Qc3 19.Rc1 Qb2 20.Rc7 h5 21.Be2 Rh6 22.0-0 Ne7 23.Ba6+/– Qa2 24.Bb7 Rd8 25.Bf6 Rf6 26.Qh5 Rg6 27.Nf3+- f6 28.Qh8 Rg8 29.Qf6 Nf5 30.Ne5 Rf8 31.Qg6 Ke7 32.Qg5 Kd6+- 33.Rcc1 Bb5 34.Ra1 Qc2 35.Rfc1 Qe4 36.Ra7 Rg8 37.Nf7 Kd7 38.Bd5 (38.Bd5 Ke8 39.Qg8#) 1–0. pinecrest1981 – yxcvb1000, Live Game Caissa's Web, 2005.

4.e3 Qc5 5.Ba3 Qb6 6.Bf8 Kf8 7.Nf3 Nf6 8.Be2 Nc6 9.0-0 d6 10.c4 e5 11.Nc3 Bg4 12.Rb1 Qc7 13.Nb5 (13.d4 Bf5 14.Rb2 Re8+-) 13...Qd7+= 14.Ne5?? (better 14.d4+=) 14...Ne5 15.Bg4 Neg4 (15...Qg4?! 16.Nd6 Qe6 17.c5=) 16.f4 a6 17.Nd4 Nh6 (17...d5 18.h3 Nh6 19.Qf3-+) 18.Rf3 (18.Qf3 d5-/+) 18...Rb8 (18...d5 19.cd5 b5 20.Qc2-+) 19.Rg3 (19.Qc2 Rc8-/+) 19...d5 20.cd5 White launches an attack 20...Qd5 21.Rg5 Qe4 (21...Qa2 22.Qc1 Ne4 23.Rb7 Re8=+) 22.Re5= Qg6 23.Rg5 Qe4 (23...Qd3 24.Qc1 Re8 25.Rb7+=) 24.Re5 Qg6 25.Rg5 Qe4 (25...Qd3 26.Qc1 Re8 27.Rb7+=) 26.Re5 Qg6 27.Rg5 Qe4 (27...Qd3 28.Qc1 Re8 29.Rb7=) 28.Re5 Qd3 29.Qc1 g6?? (better 29...Ra8=) 30.Rb3+- Qb3 31.ab3 Kg7 32.Re7 Nd5 (32...Rhc8 33.Ne6 Kg8+-) 33.Qb2 Ne7 (33...Kf8 34.Nc6! bc6 35.Qh8 Ng8+-) 34.Ne6 Kg8 35.Qg7 1–0. aravind555 (1655) – snipermove (1670), lichess.org, 2019.

4.e3 Qc5 5.Nc3 a6 6.Nf3 Nc6 7.Bd3 b5 8.a4 Bb7 (8...b4 9.Ne4 Qd5 10.Neg5+=) 9.Ne4 Qe7 10.ab5 ab5?? (better is 10...Nb4 11.ba6 Nd3 12.cd3 Ba6+-) 11.Ra8+- (11.Bb5?! Ra1 12.Ba1 Nb4+/–) 11...Ba8 12.Qa1 Bb7 (12...Na7 13.Qa7 Be4 14.Be4+-) 13.Bg7 (13.Bb5 Nb4 14.Qa7 Nc2 15.Kf1 Be4+-) 13...f6 (13...f5 14.Nf6 (worse is 14.Bh8 fe4 15.Be4 Nb4+-) 14...Nf6 15.Bf6+- (15.Bh8?! Bg7 16.Bg7 Qg7+-)) 14.Bh8 Bg7 (14...f5 15.Nf6 Nf6 16.Bf6 Qc5+-) 15.Bg7 Qg7 16.Nd6 (16.Nd6 Ke7 17.Nb7+-) 1–0. usingprogram – joule, internet, 2011.

4.e3 Qc5 5.Nf3 Nf6 6.Nc3 Be7 7.Rg1 (7.Nb5 Qb6+=) 7...h5 (7...0-0 8.Nb5 Nc6 9.Rb1=) 8.a4 Nc6 9.Nb5 0-0 10.h3 a6 11.Nbd4 Nd4 12.Nd4 b6 (better 12...d5!?=) 13.Ba3+/- (13.Ba3 Qa3 14.Ra3 Ba3 15.g4 hg4 16.hg4+/-) 1-0. is_er_nog_hoop (2625) - Kesha05 (2585), Rated blitz game, lichess.org, 2023.

4.Nf3 Qc5 5.e3 d5 6.c4 (6.Ba3 Qa5 7.Bf8 Kf8+=) 6...Nf6 (6...dc4 7.Ba3 Qc7 8.Qa4 Bd7 9.Qc4 Qc4 10.Bc4=) 7.Bf6+= gf6 8.d4 Qa5 9.Qd2?? (better 9.Nbd2+=) 9...Bb4-+ 10.Qb4 (10.cd5 Bd2 11.Nbd2 Qd5-+) 10...Qb4 11.Nbd2 Qb2 12.Rb1 Qa2 13.Bd3 0-0 (13...Qa3 14.Ke2-+) 14.0-0 Nc6 15.Ra1 Qb2 16.Rfb1 Qc3 17.Bf1 dc4 18.Bc4 e5 (18...Qc2 19.Rb3 Qg6 20.Bd3-+) 19.d5 (19.Bd5 Kg7-+) 19...Na5 (19...Nb8 20.Rc1 Qb4 21.Bd3-+) 20.Rc1 (20.Bb5 Bf5 21.e4 Nb3-+) 20...Qb4 (better 20...Qb2-+) 21.Ne4 (21.Rcb1 Qc4! 22.Nc4 Nc4 23.Kf1-+) 21...Nc4 22.Nf6 Kg7 23.Nh5 Kh6 24.Rab1 Qc5 25.Nf6 b5 26.Ne4 (26.Ne5 Qd6 27.Nc4 bc4 28.Rc4 Qf6-+) 26...Qb6 (better 26...Qd5 27.Nc3 Qc6 28.Rb5-+) 27.Rc4 bc4 28.Rb6 ab6 29.h4 (29.g4 Bg4 30.Ne5 f5 31.Ng4 fg4-+) 29...Bb7 (29...f6 30.Nfd2 Ra1 31.Kh2-+) 30.Ne5 Bd5 31.Ng4 (31.Nd6 Be6 32.Nec4 Rfd8-+) 31...Kg7 32.Nef6 (32.Nc3 Be6 33.Ne5 Ra3-+) 32...h6 (better 32...c3 33.Nh5 Kh8-+) 33.Nd5 Ra1 (better 33...Rfc8!? 34.Nc3-+) 34.Kh2 c3! 35.Nc3 Rc1 (35...f5 36.Ne5 Rc8 37.Ne2-+) 36.Nd5 (36.Ne2 Rc5 37.e4 Rd8-+) 36...h5 (better 36...f5!? 37.Ne5 Rc5 38.Nb6 Re5 39.Nd7-+) 37.Ne5 (37.Ngf6 Rh8 38.e4 b5-+) 37...Rd8 38.Nb6 (38.Nf4 Rh8-+) 38…Rb1 (38...Rb1 39.Nbc4 Rdd1-+) 0-1. Bostonbliz (2700) - AshuSahu (2550), Casual bullet game, lichess.org, 2024. (=1.b4 c5 2.Bb2 e6 3.bc5)

4.d4 Nf6 5.Nf3 b6 6.cb6 ab6 (6...Qb6 7.Bc1+=) 7.e3+/- Be7 8.Be2 0-0 9.0-0 d6 10.c4 Bb7 11.Nbd2 Qd7 12.a3 Rfc8 13.Bc3 (13.Qb3 Bc6+/-) 13...h6 (13...b5!?+=) 14.Qb3+/- Bd8 15.Rfc1 Rcb8 16.h3 Nc7 17.a4 (17.Rcb1 Ne4+/-) 17...Bc6 18.Ne1 (18.Bd1!?+/-) 18...Ba4= 19.Qb2 Bc6 20.Ra8 Ra8 21.Bf3 (21.Rb1 Ne4+=) 21...Bf3 22.Ndf3 b5 23.cb5 (23.c5 Ne4=) 23...Qb5 24.Nd3?? (better 24.Qc2=) 24...Qd3-+ 25.Ra1 (25.Be1 Nb5-+) 25...Ra1 26.Qa1 Ncd5 27.Qa8 Qc3 28.Qd8 Kh7 29.Qd6 Qc1 30.Kh2 Qf1 31.Qf8 Qf2 32.Qf7 (32.Qb8 Ne3 33.Qb1 g6 34.Qg1-+) 32...Ne3 33.Nh4 Qf4 (33...Qh4 34.Kg1 Qe1 35.Kh2 Nf1 36.Kg1 Ng3 37.Kh2 Nfe4 38.Qg7 Kg7 39.d5 Qh1) 34.g3 Qf2 35.Kh1 Qg3 (35...Qf1 36.Kh2 Nfg4 37.hg4 Ng4) 36.Qe6 (36.Qg6 Qg6 37.Ng6 Kg6 38.Kg1-+) 36...Qh4 (better 36...Qe1 37.Kh2 Qh4 38.Qe3 Ng4 39.Kg2 Ne3 40.Kf3 Qh3 41.Ke4 Nc2-+) 37.Qe3 Qe4 38.Qe4 Ne4 39.Kg2 Nd6 40.Kf3 Kg6 41.Kf4 Kf6 42.h4 (42.d5 h5-+) 42...g6 43.Kg4 h5 44.Kf4 Nf7 (44...Nf5!? 45.d5-+) 45.d5 Nd6 46.Ke3 Ke5 47.Kf3 Kd5 48.Kf4 Ke6 (48...Nf5 49.Kg5 Nh4 50.Kf4 Ng2 51.Kf3-+) 49.Kg5 Ne4 (better 49...Kf7-+) 50.Kh6 (50.Kg6 Ng3 51.Kg5 Ke5-+) 50...Ng3 (better 50...Kf5-+) 51.Kg6 Ke5 52.Kg5 Ke4 53.Kg6 Kf3 (53...Kf4 54.Kf6-+) 54.Kg5 Kg2 (54...Ke3 55.Kf6 Kf4 56.Ke6-+) 55.Kf6 Kh3 (55...Kh3 56.Kg5 Kh2-+) 0-1. Bostonbliz (2630) - weijima (2610), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2)

4.d4 Nf6 5.Nf3 b6 6.cb6 Bb7 7.c4 ab6 8.e3 Bb4 9.Bc3 Ne4 10.Bb4 Nb4 11.Bd3 (11.Qb3 Nc6+/-) 11...Ra2 (11...Nd6 12.0-0=) 12.Ra2+= Na2 13.0-0 Nb4 14.Be4 Be4 15.Qb3 (15.Nc3 Bd3 16.Re1 Qe7+=) 15...Bf3 16.Qb4 Ba8 (16...Qg5!? 17.g3 Qa5+/-) 17.Nc3+- Qe7 18.Rb1 Qb4 19.Rb4 Ke7 20.Rb6 Bc6 21.f3 Ra8 22.d5 (22.e4 Ra3 23.Ne2 Ra4+/-) 22...Ra1 23.Kf2 ed5 24.cd5 Ba8 (24...Ra3!? 25.dc6 Rc3 26.cd7 Kd7+/-) 25.e4+- Rc1 (25...f5 26.Nb5+-) 26.Ne2 Rc2 27.Ke3 h5 (27...Ra2 28.Nd4 g6 29.Rb8+-) 28.h4 (28.Nd4 Rc3 29.Kd2 Rc8+-) 28...f6 (28...Ra2 29.Nf4 g6 30.e5+-) 29.g3 (29.Nf4 Ra2+-) 29...g5 (29...Ra2 30.Nf4+-) 30.Nd4 Rc3 31.Kd2 Rc4 (31...Ra3+-) 32.Nf5 Kd8 33.hg5 (better 33.Rf6 Bd5 34.ed5 gh4 35.gh4 Rc5+-) 33...Kc7 (33...fg5 34.Rg6 g4 35.Rg8 Kc7 36.Ra8 gf3+-) 34.Rf6 Ra4 (34...Bd5 35.ed5 Ra4 36.g6+-) 35.Rh6 (35.g6 Ra2 36.Kc3 Bd5 37.ed5 Ra3 38.Kc4 Ra8+-) 35...Ra2 (35...Ra5 36.d6 Kb6 37.Ke3+-) 36.Ke3 Ra1 (36...Ra3 37.Kf4 Ra4 38.Ne7+-) 37.Rh5 (better 37.g6!? Ra3 38.Kd4 Bd5 39.ed5 Ra4 40.Ke5 Ra8+-) 37...Ra3 38.Kf4 Ra1 (38...Ra4 39.Ke5 Bb7 40.g6+-) 39.Rh7 (better 39.g6 Bd5 40.ed5 Ra8+-) 39...Rf1 (39...Ra6 40.Rh6 Ra4+-) 40.g6 Bd5 41.ed5 Kb6 42.Rd7 (42.g7 Rb1 43.g8Q Rb4 44.Ke5 Rb2 45.Qd8 Kc5 46.Qa5 Rb5 47.Qc7 Kb4 48.Rh4 Kb3 49.Qc4 Ka3 50.Qc3 Ka2 51.Ra4 Kb1 52.Ra1) 42...Kc5 43.g7 Kc4 44.g8Q Kd3 45.Re7 (45.Qe6 Rf3 46.Kf3 Kc4 47.Rb7 Kd3 48.Rc7 Kd2 49.Qe2) 45...Kd2 (45...Re1 46.d6 Re5 47.Re5 Kc3 48.Re3 Kc2 49.Qc4 Kd1 50.d7 Kd2 51.d8Q) 46.Re3 Kd1 (46...Rg1 47.Qh8 Kd1 48.Qd4 Kc2 49.Rc3 Kb2 50.Qb4 Ka2 51.Ra3) 47.Re1! (47.Re1 Re1 48.d6 Kc1 49.Qc4 Kb2 50.Qb4 Ka1 51.Qe1 Ka2 52.d7 Kb3 53.d8Q Kc4 54.Qda5 Kd3 55.Qe4) 1-0. Bostonbliz (2620) - weijima (2625), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2)

4.cb6 ab6 5.Bc1 Ba6 6.Nc3 Bb4 7.Rb1 Qh4 (7...Bc3 8.dc3 Nc6+=) 8.Rb4?? (better 8.Nf3 Qe7 9.Bb2+/-) 8...Qb4=+ 9.Nf3 Qb1?? (9...d5 10.a3 Qd6 11.e4 Bf1 12.Rf1-/+) 10.g3 (10.Nb1 Ne7+-) 10...Ra7?? (better 10...Qa1=+) 11.Nb1+- Be2 (11...Ne7+-) 12.Nc3 (better 12.Qe2 Ne7 13.Nc3+-) 12...Bd1 13.Kd1 (13.Nd1?! Ra2 14.Bb2 Nf6+/-) 13...Rc7? (better 13...Nf6+-) 14.Nb5 Rc5 (14...Rc6 15.Ne5+-) 15.Nd6 (15.d4 Rh5 16.g4 Rb5 17.Bb5 Nf6+-) 15...Ke7 16.Ne4 (better 16.Nb7 Nf6 17.Nc5 bc5 18.d4+-) 16...Re5?? (better 16...Ra5 17.Bb2 f6+-) 17.Ba3 (better 17.Ne5 Kf8 18.Ba3 Ne7+-) 17...d6 (17...Rc5 18.d4 d6 19.dc5 dc5+-) 18.Ne5 f6 19.Bd6 Kd8 20.Bb5 (20.Bb5 fe5 21.Be5+-) 1-0. FeegLood (2750) – Nathrot, Time forfeit, lichess.org, 2016.

4.cb6 ab6 5.Nc3 Nc6 6.e3 Ba6 7.Ba6 Ra6 8.Qe2 Nf6?? (better 8...Nb4+/-) 9.Qa6+- Be7 (9...Bc5+-) 10.Na4 (10.a3 e5+-) 10...0-0 (10...Nb4 11.Qb6 Qa8 12.Rb1 Nc2 13.Kd1 Qa4 14.Bf6 Bf6 15.Qb3+-) 11.Qb6 (11.a3 Ne4+-) 11...Qe8 (11...Qa8 12.Bf6 Bf6 13.Nc3+-) 12.Qb3 (12.Bf6 Bf6 13.c3 Qa8+-) 12...Nd5 (12...Qa8 13.Nb6 Qa6 14.Nc4+-) 13.c3 (13.c4 Nf6+-) 13...f5 (13...Qa8 14.Nf3+-) 14.d4 (better 14.c4!? Nf6+-) 14...f4 (14...Qg6 15.Ne2 Qg2 16.Rg1 Qh2 17.Bc1+-) 15.e4 Nf6 (15...Qg6 16.ed5 Qg2 17.dc6 Qh1 18.Kd2 Qc6 19.c4+-) 16.f3 Qh5 17.Ne2 Qh4 18.Kf1 Nh5 (18...Rb8 19.Qc4+-) 19.Nc5 (19.d5 Ne5 20.c4 Bf6+-) 19...Ng3 (19...Bc5 20.dc5 Ng3 21.Ng3 fg3 22.Qc2+-) 20.Ng3 fg3 (20...Rb8 21.Qc4 Rb2 22.Nd3+-) 21.h3 (21.Nd7 Qe4 22.Qd1 Rf7 23.hg3 Bd6+-) 21...Qf4 (21...Bc5 22.dc5 Qe4+-) 22.Bc1 (22.Nd7 Qd2 23.Qe6 Kh8 24.Qg8 Rg8 25.c4 Qf2) 22...Qc7 23.Be3 Nd8 (23...Bc5 24.dc5 Qa5 25.Kg1+-) 24.Rb1 (better 24.Qb5 d6 25.Qd7 Qa5 26.Qe7 Qc3+-) 24...Qc6 (24...Bc5 25.dc5 Nc6 26.Qd1+-) 25.Qb5 (better 25.d5 Qd6+-) 25...Qc7 (25...Bc5 26.Qc6 Nc6 27.dc5+-) 26.Na6 (better 26.Qd7 Qd6+-) 26...Qc8 (26...Qc3 27.Qb3 Qa5+-) 27.Qb8 (better 27.c4!? Nc6+-) 27...Qc3 (27...Qa6 28.Ke1 Qa2+-) 28.Qb3 Qc8 29.Nb4 (29.Nc5!? Bc5 30.dc5 Qa6 31.Kg1 Qe2+-) 29...Bb4 30.Qb4 Qa6 31.Kg1 Qa2 32.h4 Nc6 33.Rh3 (better 33.Qe1 Ra8 34.Rh3+-) 33...Nb4-+ 34.Re1 (34.Rf1 Nc2 35.Bg5-+) 34...Nd3 35.Rf1 Qe2 36.Bf4 (36.Rg3 Qe3 37.Kh2 Rf4-+) 36...Nf4 37.Rg3 Qe3 (37...Qe3 38.Kh2 Ne2-+) 0-1. ClayPigeons (2110) - Smowheer (2200), Rated Bullet game, lichess.org, 2020.

4.cb6 ab6 5.e3 Ba6 (5...Nc6 6.Nf3+=) 6.Ba6+/– Na6 7.Nf3 Nb4 (7...Nf6 8.Nc3+/–) 8.Nc3 Nf6 9.0-0 Nfd5 (9...Be7!?+/–) 10.Nd5+- ed5 (10...Nd5 11.e4 Nf6 12.e5+-) 11.Re1 Na2?! (11...Bd6 12.a3 Nc6 13.Bg7 Rg8+-) 12.e4 de4 (12...d4+-) 13.Re4 Be7 14.Bg7 Rg8 (14...d5 15.Re1 (15.Bh8?! de4 16.Nd4 Nb4+-) 15...Rg8 16.Bf6+-) 15.Bf6 Nc3 16.Re7 Kf8 17.dc3 Rg6 18.Rf7! Kf7 19.Bd8 Rd8 20.Ne5 (20.Ne5 Kg7 21.Ng6 h6 22.Qd4 Kg6 23.Qb6 Kh7 24.Qd8 Kg7 25.Qd7 Kf6 26.Qd6 Kf5 27.Ra5 Kg4 28.Qd4) 1–0. pierre – apoxiris, internet, 2009.

4.cb6 ab6 5.e4 Nc6+/–.

4.cb6 Nf6 5.ba7 Ra7 6.Bd4 (6.Nf3 Rb7 7.Bc3 d5+-) 6...Ra8 7.e3 Nc6 8.Bc3 Nd5 9.Bb2 (9.Nf3 Nc3 10.Nc3 Bb4+/-) 9...Qb6 10.Bc1 Bb4 11.Nf3 f5 12.Be2 0-0 13.0-0 Bb7 14.c4 Nf6 15.Bb2 Bd6 16.Qc1 Qc7 (16...Nb4 17.a3 Na6 18.Nc3+-) 17.Nc3 Ne4 (17...Na7 18.h3+-) 18.h3 (18.Nb5 Qb8+-) 18...Nc3 (18...Bc5 19.Nb5 Qa5 20.d3+-) 19.Qc3 (19.dc3?! Ne5+=) 19...Rf7 20.a4 h6 (20...Bb4 21.Qb3+-) 21.Rfb1 Na5 22.Ba3 Be4 (22...Ba3 23.Ra3 (worse 23.Qa3 Bf3 24.Bf3 Nc4+-) 23...d6 24.d4+-) 23.Bd6 Qd6 24.d3 Bc6 25.Rb6 Qc7 26.Qb4 (26.c5 f4 27.e4 d6+-) 26...f4 (26...Rff8 27.Rb1+-) 27.e4 Rff8 28.Nd4 Rfb8 29.Nc6?? (29.c5!? Qc8+-) 29...Nc6?? (better 29...Rb6 30.Ne7 Kh7-+) 30.Qb5?? (better 30.Rb8 Rb8 31.Qc3+-) 30...Rb6-+ 31.Qh5 Rba6 32.Bd1 Qe5 33.Rb1 (33.Qe5 Ne5 34.Bc2 Rb6-+) 33...Qh5 (33...Ra4?! 34.Qe5 Ne5 35.Ba4 Ra4 36.Rb3-+) 34.Bh5 Ra4 35.Rb7 (35.g3 Ne5-+) 35...R4a7 (35...Ra1 36.Kh2 Rf1 37.Be2 Rf2 38.Bh5-+) 36.Rb6 (36.Ra7 Ra7 37.g3 Ra3 38.gf4 Rd3-+) 36...Ra6 (36...Ra1 37.Kh2 Rf1 38.g3 Rf2 39.Kg1 fg3 40.Rb1-+) 37.Rb7 (37.Ra6 Ra6 38.g3 Ne5-+) 37...R8a7 (37...Ra1 38.Kh2 Rf1 39.Be2 Rf2 40.Bh5-+) 38.Rb5 (38.Ra7 Ra7 39.g3 Ra3 40.gf4 Rd3-+) 38...Ra5 (38...Ra1 39.Kh2 R7a2 40.f3-+) 39.d4 (39.Ra5 Ra5 40.Be8 Ne5-+) 39...Rb5 40.cb5 Nd4 41.Bd1 (41.Kh2-+) 41...Ra1 42.Kh2 Rd1 43.b6 Rb1 44.b7 (44.h4 Rb6 45.g3 f3-+) 44...Rb7 45.g3 e5 46.gf4 ef4 47.Kg2 Ne6 (47...Rb2 48.h4-+) 48.h4 Rb3 49.f3 h5 50.Kh3 Rf3 (50...Rb2 51.e5 Nd4 52.e6 Nf3 53.ed7 Ng1) 51.Kg2-+ Rg3 52.Kf2 Rg4 (52...Nc5 53.e5 Ne4 54.Ke2 Re3 55.Kd1 f3 56.e6 f2 57.Kc2 f1Q 58.e7 Qf2 59.Kd1 Qd2) 53.Ke2 Rh4 54.Kd3 Rh3 55.Kc4 Re3 56.Kd5 Re4! 57.Ke4 (57.Ke4 g5 Passed pawn) 57...f3! 58.Kf3 g5 59.Kg3 Kf7 (59...Kf7 60.Kf2 d5-+) 0-1. Bostonbliz (2640) - weijima (2630), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2)

5.Qc1 Bb7 6.e3 f6 (6...Nc6 7.Nc3+/–) 7.Bd4 (better is 7.Nc3+/–) 7...e5?? (better is 7...Qc7+=) 8.Bb6+- ab6 0–1. GuestVLLC – GuestMDHT, freechess.org, 2016.

5.Qc1 Nf6 6.e3 Bb7 7.Bf6 gf6 8.Nc3 h5 (8...Rg8 9.Rb1 Qc7 10.f3+/-) 9.Rb1 Qc7 10.Nf3 (10.Nh3 a6+/-) 10...Rg8 11.g3?? (better 11.Qd1+/-) 11...Bf3-+ 12.Rg1 h4! 13.Nb5 (13.gh4 Qh2 Double attack (13...Rg1 Pinning; Rg1 Deflection; Qh2 Decoy)) 13...Qa5 14.Bg2 (14.Qb2 a6 15.Nd4 Bd5-+) 14...Bg2 15.Rg2 hg3 (15...Nc6 16.Rb3-+) 16.hg3 (16.Rg3 Rg3 17.hg3 Nc6-+) 16...Nc6 17.Qb2? (17.Rh2 a6 18.Nc3 Bb4-+) 17...Be7 (better 17...Rb8!? 18.c4 a6 19.Qc3-+) 18.Qc3 (18.Nc3 Rb8 19.Qa1 Rb1 20.Qb1 Rh8-+) 18...Qc3 (18...Bb4!? 19.Rb4 Qb4 20.Nc7 Ke7 21.Qb4 Nb4 22.Na8 Ra8 23.a4-+) 19.Nc3 Rb8 (19...Rh8 20.Ke2-+) 20.Rb8 Nb8 21.Ke2 Nc6 22.Rh2 d5 23.Nb5 (23.Rh7 a6-+) 23...a6 24.Nc7? (24.Nc3-+) 24...Kd7 25.Na6 (25.Nd5 ed5 26.a4 Rb8-+) 25...Ra8 26.c4 (26.a4 Ra6 27.Rh4 f5-+) 26...dc4 27.Rh4 Ra6 28.Rc4 Ra2 29.g4 (29.Kd1 Ne5 30.Rc2 Rc2 31.Kc2 Ng4-+) 29...Ne5 (29...Bb4 30.Rf4-+) 30.Rd4 Ke8 (30...Bd6 31.Rf4-+) 31.f3 Bc5 32.Rc4 (32.Re4 Rb2 33.f4 Ng4 34.Rc4-+) 32…Nc4 (32...Nc4 33.Kd3 Nd2-+) 0-1. Bostonbliz (2640) - weijima (2630), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2)

5.Qc1 Nf6 6.e3 Nc6 7.Nf3 Rb8 8.Ba3 (8.Bf6 gf6 9.Nc3 Qa5+/-) 8...Nb4 (8...d6 9.Nc3+=) 9.Be2 (9.c3 Nbd5+/-) 9...Bb7 10.0-0 h5 (10...Bf3 11.Bf3 Qc7 12.Nc3+=) 11.c3 Nbd5 (11...Bf3 12.Bf3 (12.Bb4? Be2 13.Re1 Bd3-+) 12...Nc6 13.d4+/-) 12.Bf8 Kf8 13.c4 Nb4 14.Nc3 Qc7 (14...Bf3 15.Bf3 Qc5 16.Qa3+/-) 15.Qa3 (15.Nb5 Qa5+-) 15...a5 16.Nb5 Qb6 17.c5 (better 17.Rfc1!?+-) 17...Qc5+= 18.Rfc1 Qe7? (better 18...Qb6!?+=) 19.Qa5+- Kg8 20.Qc7 Kh7 (20...Na6 21.Qd6 Qd6 22.Nd6 Bf3 23.gf3+-) 21.Nd6 (21.Ng5 Kg6 22.Nf7 Qf7+-) 21...Nfd5 (21...Bf3 22.Bf3 (22.gf3?! Nfd5 23.Qc5 Rb6+=) 22...Nfd5 23.Qc5+-) 22.Qc5+- Na6? (better 22...Ba6 23.Ba6 Na6+-) 23.Qc2 g6 24.Nb7 Rb7 (24...Nab4 25.Qb1 Rb7 26.a3+-) 25.Ba6 Nb4 26.Qa4 (better 26.Qb3 Rbb8 27.Be2+-) 26...Ra8 27.Qd1 (27.Rcb1!? Rbb8 28.Ne5 Ra6 29.Qd7 Qd7 30.Nd7 Rd8 31.Rb4 Rd7+-) 27...Ra6+/- 28.a3 Nd3 29.Rcb1 (29.Rc3 Nc5+/-) 29...Rc7? (29...Rb1 30.Rb1 Ra3 31.Rb3=) 30.Qe2 (better 30.Rb3 Nc5 31.Rc3+/-) 30...Rd6?? (better 30...Ra3!? 31.Ne1 Ra1 32.Ra1 Qf6=) 31.h4 (31.Nd4 Ne5+-) 31...Qf6? (31...Rc8 32.a4+/-) 32.Nd4 (32.Ng5 Kg7 33.Ne4 Qe5 34.Nd6 Qd6+-) 32...e5 (32...Nf4 33.Qf3 (33.ef4?! Rd4 34.Qe5 Qf4 35.Qf4 Rf4=) 33...Rc4 34.d3+/- (worse 34.ef4 Rdd4 35.f5 Rd2=+)) 33.Qd3 (better 33.Nb5!? Rcc6 34.Nd6 Rd6 35.Qf3+-) 33...ed4+/- 34.ed4 (better 34.e4!?+/-) 34...Rd4= 35.Qg3 (35.Qe3 Rc2 36.Rd1 Qh4=) 35...Rcc4 (35...Rd2 36.Rf1 Rdc2 37.a4=) 36.a4 (36.Ra2 Rh4 37.Qd3 Rcd4=) 36...Rg4 (36...Ra4 37.Ra4 Ra4 38.Qg5 Qg5 39.hg5=+) 37.Qe3 (37.Qa3 Qc6 38.g3 Ra4=) 37...Qh4 (better 37...Ra4!? 38.Ra4 Ra4=) 38.a5+= Rce4 39.Qb3 Ref4 40.f3 (better 40.g3 Qf6 41.Qb6+=) 40...Rg3-/+ 41.d4 (better 41.Qd1!?-/+) 41...Rff3 42.Qf3 Rf3 43.gf3 Qg3 44.Kf1 Qf3 45.Ke1 Qe3 46.Kd1 (46.Kf1 Qd3 47.Kg2 Qe2 (47...Qd4?! 48.a6-/+) 48.Kh1 Qe4 49.Kh2 Qd4-+) 46...Qd4 47.Ke1 Qe4 48.Kf1 (48.Kf2-+) 48...Qd4 49.Kg2?? (49.Ke1 g5-+) 49...Qe4 50.Kh3?? (50.Kf1 Qd3 51.Kf2-+) 50...Qf4 (50...g5 51.Kh2 g4-+) 51.Rb3?? (better 51.a6 h4 52.Rg1 Qe3 53.Kh2-+) 51...Qe4 (better 51...Qf5 52.Kg2 Qc2 53.Kh1 Qb3-+) 52.Rg3?? (52.Rbb1 g5 53.Kg3 h4 54.Kh3 Qe3 55.Kh2-+) 52...Qe3?? (better 52...h4 53.Rga3 g5-+) 53.Re3+- g5 54.Re8 g4 55.Kg2 (55.Kh4 g3 56.a6 Kg7 57.a7 Kh6 58.a8Q Kg7 59.Rg8 Kf6 60.Qe4 g2 61.Ra6 d6 62.Rd6) 55...Kg6 56.Kf2 1-0. NguyenMinhTam (2645) - SantosBarrios (2755), Rated bullet game, lichess.org, 2025.

5.Bc1+=.

Qb6 5.Bc3 Nc6 6.e3 (6.Nf3 d5 7.e3 Rb8+/–) 6...a5 (6...Qc7 7.Nf3+/–) 7.Na3 (7.Nf3 Rb8+/–) 7...Ba6 8.Rb1 Qa7 (8...Nb4!?+/–) 9.Ba6 (9.Nb5 Bb5 10.Bb5 Qc7+-) 9...Qa6 10.Nb5 Qc8?? (better is 10...Rc8+-) 11.Bg7!! Nge7 (11...Bg7 Theme: Deflection from d6 12.Nd6 A double attack) 12.Nd6 (12.Nd6 Kd8 13.Nc8 Bg7 14.Nd6+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Bc3 Nf6 6.e3 Bb4 7.Nf3 Bc3 8.Nc3 0-0 9.Rb1 Qa5 10.Bc4 (10.Nd4 d5+/-) 10...Nc6 11.0-0 Ba6 12.Ba6 Qa6 13.Ne2 (13.e4!?+/-) 13...Rab8 (13...Qa2 14.d3=) 14.Ned4 Nb4 (14...Nd4 15.Nd4 Ne4 16.Rb8 Rb8 17.f3+=) 15.a3 Nbd5 16.Ra1 (16.Rb8 Rb8 17.Qa1 d6+/-) 16...Ne4 (16...d6 17.Re1+=) 17.Ne5 (better 17.c4 Ndf6 18.d3+/-) 17...d6? (better 17...Qd6 18.Nd3 Rfc8+=) 18.Nd7+- Rb2 (18...Ndf6 19.Nf8 Kf8 20.c4+-) 19.Nf8 Kf8 20.Qc1 Qb7 (20...Rb6 21.c4 Ndf6 22.Qc2+-) 21.Rb1 (better 21.Nb3 Rb3 22.cb3 f5+-) 21...Rb1 22.Qb1 Qb1 23.Rb1 Nd2 24.Rb7 a5 25.Nb5 (better 25.Nc6!? Ke8+-) 25...Nc4 26.a4 g6 27.e4 Nc3?? (better 27...Nb4+-) 28.Rc7 (better 28.Nc3!? h5+-) 28...Nb5 29.ab5 (29.Rc4?! Na3 30.Rc7 Ke8+-) 29...d5 (29...Nb6 30.Rc6 Nd7 31.b6 Nb6 32.Rb6+-) 30.ed5 (30.Rc4 dc4 31.b6 a4+-) 30...ed5 (30...Nb6 31.d6 Ke8+-) 31.Rc5 (better 31.Rc4 dc4 32.b6 Ke7+-) 31...a4 (31...Ke8 32.Rd5 h6 33.Rc5+-) 32.Rd5 (better 32.Rc4 dc4 33.b6+-) 32...a3 33.Rd8 (33.Rd7 Ke8 34.Rc7 Nd6+-) 33...Kg7 (33...Ke7 34.Rc8 Nd6 35.Rc7 Kd8+-) 34.Ra8 Kf6 (34...a2 35.Ra2 Kf8 36.Ra6+-) 35.b6! Nb6 36.Ra6 a2 37.Rb6 Ke5 38.Ra6 Kd5 39.Ra2 Kc4 (39...h5 40.Ra5 Kd6 41.Ra7+-) 40.Ra3 (40.Ra7!? f6+-) 40...Kb4 (40...Kd5 41.Rd3 Kc6 42.g4+-) 41.Rd3 1-0. ClayPigeons (2160) - salparadise27 (2145), Rated Bullet game, lichess.org, 2021.

4.d4 Be7 5.d5 Nf6 6.de6 de6 7.Qd8 Bd8 8.Nc3 0-0 9.0-0-0 Nc6 10.e3 Bb6 11.Bd3 Ba5 (11...Ng4 12.Nh3=+) 12.Nf3 a6 13.Ne4 Ne4 14.Be4 e5 (14...Bc7 15.c4+=) 15.Kb1 (15.Bc6 bc6 16.Ne5 Bb7+-) 15...Be6 (15...f6 16.a3=) 16.Bd5 (better 16.Ne5 Ne5 17.Be5+/-) 16...f6?? (better 16...Bd5 17.Rd5 f6=) 17.Be6+- Kh8 18.Nh4 (18.Rd7 Rfe8 19.Bf5 Re7+-) 18...Rae8 (18...Rfe8 19.Bd7 Red8 20.c4+-) 19.Bb3 Rc8 20.Nf5 g6 21.Nd6 Kg7 (21...Rc7 22.a3+-) 22.h4 (22.Nc8!? Rc8 23.Rd7 Kh6 24.Rb7 Rc7 25.Rc7 Bc7+-) 22...Rcd8 (22...Rc7 23.h5 gh5 24.Bd5+-) 23.h5 (23.Nb7 Rd1 24.Rd1 Rc8+-) 23...g5 (23...gh5 24.Nb7 Rd1 25.Rd1+-) 24.h6 (24.Nb7!? Rd1 25.Rd1 Bb4+-) 24...Kg6 25.c4 f5 26.c5 e4 (26...Rd7 27.Bd5+-) 27.f4 (better 27.Bg7!? Bc7 28.Nb7 Rc8+-) 27...b6 (27...ef3 28.gf3 Bc7 29.Bg7+-) 28.cb6 (better 28.g4 bc5 29.gf5 Rf5+-) 28...Bb6 29.g3 (29.g4 Be3 30.gf5 Rf5 31.Nf5 Kf5 32.Rd8 Nd8+-) 29...g4 (29...Be3 30.Bg7+-) 30.Rh4 Nb4 (30...Nd4 31.Nf5 Rf5 32.ed4 e3+-) 31.Rdh1 (31.Be6 Nd3 32.Bf5 Rf5 33.Rg4 Kh5 34.Rg7 Nf2 35.Rh1 Nh1 36.Nf5 Rd1 37.Kc2 Rd2 38.Kd2 Ba5 39.Kc2 Ng3 40.Rg5) 31...Nd3?? (better 31...Rd6 32.Be5 Rd3+=) 32.Ne4 (better 32.Nf5 Nb2 33.Rc1+- (33.Kb2?! Kf5 34.Rc1 Rc8+/-)) 32...fe4?? (32...Nb2 33.Rc1 Rc8 34.Bf7 Kf7 35.Rc8 Rc8 36.Nd6 Ke6 37.Nc8 Bd8+-) 33.Rh5 (33.Rg4 Kf5 34.Rg5) 33...Rf5?? (better 33...Nb2 34.Rg5 Kf6 35.Kb2 Be3=) 34.Rg5 (better 34.Rf5 Ne5 35.Re5 Rd4 36.Rc1 Kh6 37.Rg5 Rd2 38.Bg7) 34...Rg5-+ 35.fg5 Kg5 36.Bd4 (better 36.Bg7 Be3 37.Bf7-+) 36...Kg6?? (better 36...Bd4 37.ed4 e3-+) 37.Be5?? (better 37.Bb6 Rb8 38.Bd4+-) 37...Rc8 (better 37...Ne5 38.Rf1 Nf3-+) 38.Bf4=+ Rc1?? (better 38...Nf4 39.ef4 Bf2=+) 39.Rc1+- Nc1 40.Kc1 Be3 (40...Bd8+-) 41.Kb2 (better 41.Be3 Kf5 42.Kd2+-) 41...Bf4-+ 42.Ka3? (42.Be6 Bg3 43.Bg4 Kh6-+) 42...Kf5 (better 42...Bg3 43.Be6 Bd6 44.Kb2-+) 43.Bd5?? (43.Bg8 Bd6 44.Kb3-+) 43...Bg3 44.Be4 (44.Kb3 Bd6 45.Kc3-+) 44...Ke4 45.Kb4 Kf3 46.Ka5 Bf4 47.Ka6 g3 48.Kb6 g2 49.Kb5 g1Q 50.Kc4 Qb1 (50...Qb1 51.Kc5 Qf5 52.Kc6 Qe6 53.Kc5 Be3 54.Kb5 Qd5 55.Kb4 Bd2 56.Ka3 Qb7 57.Ka4 Qb4) 0-1. CronusCR (2150) - Schachmalanders (2195), Rated Bullet game, lichess.org, 2017.

4.e3 a6?? 5.Bg7+- Nf6 6.Bh8 Be7 (6...d5 7.Nf3+-) 7.Bf6 (7.c3 Nc6+-) 7...Bf6 8.c3 b5 (8...d5 9.d4+-) 9.Nf3 (9.Qh5 d5+-) 9...Qc7 (9...Bb7 10.d4+-) 10.Be2 (10.Qc2 h6+-) 10...Bb7 11.0-0 Bf3 (11...Bd5 12.d4+-) 12.Bf3 h5 (12...Nc6 13.d4+-) 13.g3 (13.Ba8 d5 14.f4 Nd7+-) 13...Be5 (13...Nc6 14.Bh5 d5 15.a4+-) 14.Bh5 (better is 14.Ba8 h4+-) 14...Bd6 (14...Nc6 15.a4 ba4 16.d4+-) 15.Bf3 (better is 15.Qf3 Qc5+-) 15...Nc6 Black prepares the advance b4 16.d4 Ne5 (16...Rc8+-) 17.de5 Be5 18.Ba8 b4 19.cb4 (better is 19.Qc2 Ke7+-) 19...Ba1 20.Nd2 (20.Qa4 Qb8 21.Be4 Ke7+-) 20...Be5 21.Bg2 Bd6 22.Nf3 (better is 22.Qa4 Be7+-) 22...Qb7 (22...Bb4 23.Qa4 a5+-) 23.Qd6 Qb5 24.Rc1 Qb8 25.Qb8 Ke7 26.b5 (26.Qg8 a5 27.Qg5 f6 28.Qg7 Kd6 29.e4 ab4 30.Qf8) 26...Kf6 (26...ab5 27.Qb5 f6 28.Rc7 Kf8 29.Qd7 e5 30.Qd8) 27.ba6 (27.Qd8 Kg7 28.Qg5 Kh7 29.Rc4 ab5 30.Rh4) 27...d6 (27...Kg7 28.Rc8 d6 29.Rg8 Kf6 30.e4 d5 31.Qd8) 28.Qd8 Kg6 (28...Kg7 29.Qg5 Kh7 30.Rc4 d5 31.Rh4) 29.Qd6 (29.Qg8 Kh6 30.Rc4 d5 31.Rh4) 29...Kf6 (29...Kg7 30.Qe5 f6 31.Rc7 Kg6 32.Nh4 Kh6 33.Qf6 Kh5 34.Bf3) 30.Qd8 Kf5 (30...Kg7 31.Qg5 Kh7 32.Rc4 e5 33.Rh4) 31.Qg5 Ke4 32.Nh4 (32.Ne5) 32...Kd3 33.Qc5 Ke2 (33...e5 34.Qc2) 34.Qc4 (34.Qc2) 34...Kd2 35.Qc3 (35.Nf3) 35...Ke2 36.Rc2 (36.Bf3) 36...Kd1 37.Qd2 (37.Bf3) 1–0. Fournier,Frederic (1840) – M4T4D0R, Active, 2005.

4.e3 Nf6= 5.d4 Be7 6.c3 0-0 7.Nd2 Nc6 8.Bd3 d5 9.Ne2 b6 10.0-0 Bb7 11.c4 dc4 12.Nc4 Rc8 13.a4 h6 14.e4 Qc7 (14...Nb4 15.e5 Nfd5 16.Ne3-/+) 15.e5 Nd5 16.Ng3 Na5 (better is 16...Ncb4 17.Be2 Rfd8-/+) 17.Na5+= ba5 18.f4?? (better is 18.Qg4 Qd7 19.Nh5+=) 18...Qc2?? (better is 18...Ne3 19.Qe2 Nf1 20.Rf1 Bd5-/+) 19.Bc2+- (19.Bc2 Ne3 20.Bh7 Kh8 21.Qb3 Nf1 22.Qb7 Ng3 23.hg3+-) 1–0. tumachov – Fournier,Frederic (1815), Active, 2011.

4.e3 Nf6 5.Nf3 Nc6 6.Bd3 d5 7.Nc3 a6 8.Ne2 b5 9.a4 b4 10.Nf4 (10.0-0 0-0=) 10...Bd6=+ 11.Bf6 Qf6 12.Nh5 Qh6 13.Nh4? (better 13.Ng3!?-/+) 13...Ne5 (13...g5 14.Rb1-+) 14.0-0? (better 14.g3-+) 14...Nf3 (better 14...Nd3 15.cd3 g5-+) 15.Qf3+- (worse 15.Nf3 Qh5 16.c3 e5-/+) 15...Bh2?? (better 15...g5 16.Qf6 Qf6 17.Nf6 Ke7 18.Nf5 ef5 19.Nd5 Kd8+-) 16.Kh1 (better 16.Kh2 f5 17.Be2+-) 16...Be5+= 17.Bb5?? (17.Rab1 g6 18.Rb4 gh5+=) 17...Kd8?? (17...ab5 18.d4 Bf6 19.Nf6 gf6 20.Qg3 ba4 21.Rfb1-/+) 18.Qf7?? (18.Bc6 Ra7 19.Rab1=) 18...Qg5?? (better 18...ab5 19.d4 Bd6 20.Qg7 Qg7 21.Ng7 ba4-+) 19.Qe7 (better 19.Nf3 Qf5 20.Qf5 ef5 21.Ne5 ab5 22.ab5 Ra1 23.Ra1+-) 19...Ke7-+ 20.Nf6 Qh4 (20...Qh4 21.Kg1 Qh2) 0-1. FeegLood (2185) - AMADAN (2125), lichess.org, 2015.

4.Nf3 Qb6= 5.Bg7?? (better is 5.Qc1 Bf2 6.Kd1=) 5...Bf2 0–1. Fournier,Frederic (1845) – sefiroth (1730), Active, 2005.

4.Bg7+- Qb6 5.e3 f6 6.Qh5 Ke7 7.Bh8 Qb2 (7...h6 8.Nc3 Bb4 9.Nb5+-) 8.Qh7 (better is 8.Qc5 Kd8 9.Qc3 Qc3 10.Nc3 b6+-) 8...Kd6 9.Qd3 Ke7 10.Qc3 Qb6 11.Nf3 Nc6 12.Na3 Ba3 (12...d5 13.Rb1 Qa5 14.Nb5 Qc3 15.Nc3+-) 13.Qa3 Nb4 (13...d6+-) 14.c3 1–0. GuestDPNV – GuestQYXL, freechess.org, 2017.

4.Bg7+- Qb6 5.e3 f6 6.Bh8 Nc6 7.Nc3 (7.Nc3 Kd8 8.Qh5+- f5 9.Rb1 Qa5+-; 7.Qh5 Kd8 8.Nc3 f5 9.Rb1 Qa5+-) 1–0. pierre – azmir, internet, 2008.

4.Bg7+- Qb6 5.e3 f6 6.Bh8 Nc6 7.Nf3 d5 8.d4 Bb4 9.c3 Ba5 10.Bd3 (10.Qc2 Qc7+-) 10...Qb2 11.Nbd2 Qc3 (11...Bc3 12.Rc1 h6 13.0-0+-) 12.Bh7 Nh6 (12...Nce7 13.h4+-) 13.Bf6 Ng4 14.0-0 (better 14.Rc1 Qa3 15.Bg5+-) 14...Nf6 15.Bg6 Ke7 16.Rc1 Qb4 17.Nb3 Bc7 18.Ne5! Qd6 (18...Ne5 19.Rc7 Pinning (19.Rc7 Deflection); 18...Be5 19.de5 Combination) 19.f4 Bd7 (19...Bb6 20.Nc5+-) 20.Qf3 (20.Nc5 Bb6 21.Nb7 Qc7+-) 20...Rf8 (20...Bb6 21.Qh3 Qb8 22.Qh6+-) 21.Bd3 (worse 21.Nd7 Nd7 22.Qh3 Bb6+-) 21...Kd8 22.Ng6 (22.Nc5 Bc8+-) 22...Rg8 23.h3 (23.Nc5 Bc8+-) 23...a6 (23...Nb4 24.Nc5 Bc8 25.Ne5+-) 24.Nc5 Kc8 (24...Bc8 25.Qf2 a5 26.Ne5+-) 25.Nd7 (25.Rb1!? Na5+-) 25...Qd7 26.Ne5 Ne5 (26...Be5 27.fe5 Ne8 28.Qf7+-) 27.de5 Ne8 28.g4 Kb8 29.Rc2 Rf8 30.Rfc1 (30.Qe2 Kc8+-) 30...Be5 31.Rc8! Qc8 32.Rc8 Kc8 33.f5 (better 33.Bf5! ef5 34.fe5 Nc7+-) 33...Nd6 34.e4 de4 35.Be4 b5 (35...ef5 36.Bf5 Nf5 37.gf5+-) 36.Kg2 (36.Qe3 Kd8 37.Bb7 Nc4+-) 36...Nc4 (36...ef5 37.Bd3 Kd7+-) 37.Qd3 (better 37.Bd3 ef5 38.Qa8 Bb8 39.Qa6 Kc7 40.Bc4 bc4 41.Qc4 Kd7 42.gf5+-) 37...Rd8 38.Qb3 (38.Bb7 Kc7 39.Qf3 Rd2 40.Kh1 ef5 41.Qc6 Kb8 42.Qc8 Ka7 43.Qa8 Kb6 44.Qa6 Kc5 45.gf5 Rd3 46.Qc6 Kb4+-) 38...Rd2+/- 39.Kf1?? (39.Kh1 Re2 40.Bf3 Rb2+-) 39...Rd1?? (better 39...Rd4 40.Kg2 Re4=) 40.Ke2 Rd2 41.Ke1 Rh2? (41...Bd4 42.Qf3 Ra2=) 42.fe6 Kd8 (42...Bd6 43.a4 Rb2+-) 43.e7! Ke7 44.Qf3 (44.Bd5 Rb2 45.Qd3 Ra2 46.Bc4 bc4 47.Qc4 Rh2+-) 44...Bf6? (better 44...Ra2 45.Bb1 Ra3 46.Qb7 Kd6+=) 45.Qf5?? (better 45.Bd5 Ra2 46.Qe4 Kd6 47.Bc4 bc4 48.Qc4+-) 45...Bh4 46.Kd1?? (46.Kf1 Ne3 47.Kg1 Nf5 48.Kh2-+) 46...Rd2 (better 46...Ne3 47.Kc1 Nf5 48.Bf5 Ra2-+) 47.Kc1+/- Bf6 (47...Rd1 48.Kd1 Ne3 49.Ke2 Nf5 50.gf5+/-) 48.Qh7 (48.Qc5 Rd6+-) 48...Ke6 (better 48...Kf8 49.Bc2 Bb2 50.Kb1 Rf2+/-) 49.Bd5?? (better 49.a4+-) 49...Kd5-/+ 50.Qf5? (better 50.Qf7!? Ke5 51.a4-+) 50...Be5-+ 51.g5?? (51.Qd7 Ke4 52.Qd2 Bf4 53.Qf4 Kf4-+) 51...Ra2 (better 51...Rd1 52.Kd1 Ne3 53.Ke2 Nf5-+) 52.g6 (52.Qf3 Kd4 53.Qg4 Kc5 54.Qf3-+) 52...Ra1 53.Kc2 Kd4 (better 53...Ne3 54.Kb3 Nf5-+) 54.Qg4-/+ Kc5 55.Qc4?? (better 55.Qg5 Ra2 56.Kb1 Rb2 57.Kc1-/+) 55...Kc4 56.Kd2 Ra2 (better 56...b4 57.Ke3-+) 57.Ke3 Rb2 (better 57...Bd4 58.Kf4 b4 59.h4-+) 58.Ke4 Rb3 (58...Rg2 59.Ke5 b4 60.h4 b3 61.g7 b2 62.g8Q Rg8 63.Kf6 b1Q 64.Ke6 Qe4 65.Kf7 Qg6 66.Ke7 Kd5 67.h5 Qe6) 59.Kf5 (59.Ke5 Rh3 60.Kf4-+) 59...Re3 60.h4 Bd4 (60...b4 61.g7 Bg7 62.Kf4 Re7 63.h5 Be5 64.Kf3 b3 65.Kg4 b2 66.Kh4 b1Q 67.h6 Qe4 68.Kg5 Rh7 69.Kh5 Qf5 70.Kh4 Rh6) 61.h5 Rf3 62.Ke6 (62.Kg4 Rf1 63.g7 Bg7-+) 62...Rf6 (62...b4 63.g7 Bg7 64.h6 Bh6 65.Kd6 b3 66.Kd7 b2 67.Ke7 b1Q 68.Ke6 Qg6 69.Ke7 Rf7 70.Kd8 Qg8) 63.Ke7 Rg6! 64.hg6 Bc5 (better 64...b4 65.Kf7 b3-+) 65.Kf7= Bd6?? (65...Bd4 66.Ke7 b4-+) 66.Ke6 (66.Ke6 Bf8 67.Kf7-+). Jaymarc_Gutierrez (2555) - markb0716 (2665), Rated bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2 Bc5)

4.Bg7+- Nc6 5.Bh8 b6 6.Bb2 Qg5 7.Nf3 Qf5 8.Nc3 Bb7 9.e3 0-0-0 10.Be2 Nh6 11.d4 Bb4 12.Qd3 Qg4 13.Rg1 Qg7 14.a3 Bc3 15.Bc3 d5 16.a4 a5 (16...Qg6 17.Qd2+-) 17.Qb5 Ng4 (17...f6 18.Qb6 Qc7 19.Qc7 Kc7 20.Bd3+-) 18.Qb6 Qg6 (18...f5 19.Ba5 Na5 20.Qa5+-) 19.Bd3 (19.Ba6 Rd6 20.Qb7 Kd8 21.Qc8 Ke7 22.Qc7 Rd7 23.Qc6 Qg8+-) 19...Qh6 20.Rb1 (better is 20.Ba6 Rd6 21.Qb7 Kd8+-) 20...Rd7 21.Ba5 (better is 21.Ba6 Nb4 22.Bb4 ab4 23.Rb4 Rc7 24.Bb7 Kd7+-) 21...Ne3 (21...Na5 22.Qa5 Rc7 23.h3+-) 22.Bd2 Nc2 23.Bc2 Qf6 24.a5 (better is 24.Bg5!? Qg7 25.Bf4 Re7+-) 24...Qd8 25.Ba4 Qb6 26.Rb6 Rd6 27.a6 Ba6 28.Ra6 Kb7 29.Rc6 Rc6 30.Bc6 Kc6 31.Ne5 (31.Ne5 Kb6 32.Nf7+-) 1–0. Fournier,Frederic (1695) – 26stack (1820), Active, 2004.

4.Bg7+- Bd4 5.Bd4 f6 6.e3 (6.e4 Nc6+-) 6...Nc6 (6...Nh6; 6...d6) 7.Qh5 (7.Bc3) 7...Ke7 8.Nf3 (8.Bb2) 8...Qb6 (8...Nd4 9.ed4 b6+-) 9.Bb6 (9.Bb6 ab6 10.Nc3+-) 1–0. pierre – LurZa_boY, internet, 2008.

4.Bg7+- Bd4 5.Bd4 Nf6+-.

4.Bg7+- Bf2 5.Kf2 Qg5 6.Bh8 Nh6 7.Nf3 Qh4 (7...Qg8 8.Bb2 Ng4 9.Kg1 Qg6+-) 1–0. Bonetti,Shane – Abismo, ICC, 2002.

4.Bg7+- f6 5.Bh8 Qb6 6.e3 Qb2 7.Nc3 Nc6 8.Rb1 Qa3 9.Nb5 Qa5 10.Qh5 Kd8 11.Qf7 Nce7 12.Qf8 1–0. DEFFM – GuestMPYH, freechess.org, 2018.

4.Bg7+- f6 5.Bh8 Bd4 6.c3 Be5 7.e3 (7.d4 Bc7+-) 7...Qe7 8.Nf3 (8.d4 Bc7+-) 8...Bd6 (8...Bc7 9.d4+-) 9.Bd3 (9.d4 Bc7+-) 9...h6 (9...Nc6 10.Nd4 f5 11.Qh5 Qf7 12.Qf7 Kf7 13.Bc4+-) 10.Bg6 Kf8 (10...Kd8 11.e4+-) 11.0-0 Nc6 12.Nd4 (12.d4 Nd8+-) 12...Nd8 (12...Ne5 13.Qc2+-) 13.f4 (13.Nb5 Bb8+-) 13...Nf7 14.Bf7 Qf7 15.Nb5 (15.Qa4 Ke7 16.Na3 Bc5+-) 15...Bb8 16.Qa4 a6 (16...d5 17.f5!+-) 17.f5 (better is 17.Rf3+-) 17...ab5 (17...Qh7 18.fe6 Qh8+-) 18.Qa8 Bh2 19.Kh2 Qh5 20.Kg1 Ne7 21.Bf6 Kf7 22.Be7 Ke7 23.f6 Kf7 24.Qc8 d5 25.Qb7 Kg6 (25...Kf8 26.Qg7 Ke8 27.Qe7) 26.Qg7 1–0. GuestVSMQ – GuestSVKR, freechess.org, 2018.

4.Bg7+- Nf6 5.Bh8 Kf8 (5...d5 6.e3+-) 6.Nc3 (6.d4 Kg8 7.dc5 Kh8+-) 6...Kg8 (6...d5 7.e3+-) 7.Bf6 Qf6 Do you see the mate threat? 8.Ne4 Qe5 (8...Qd4 9.Nc5 Qc5 10.e3+-) 9.Nc5 Qc5 10.e3 b6 (10...Nc6 11.Qg4 Kh8 12.c3+-) 11.Bd3 (11.Qg4!? Kf8 12.Qe4 Nc6 13.Qh7 Ke7+-) 11...Bb7 (11...Qe5 12.Nf3 Qg7 13.0-0+-) 12.Qg4 Kf8 (12...Kh8 13.Nf3 Nc6 14.Qh4+-) 13.Nf3 (13.Bh7 Qe5 14.Rd1 Qg7 15.Qb4 Ke8+-) 13...d5 (13...h5 14.Qf4 Ke8 15.Ne5+-) 14.Ne5 Qe7 (14...f6 15.Bh7 fe5 16.Qg8 Ke7 17.Qg7 Kd6 18.Qb7+-) 15.Bh7 Ke8 (15...Qf6 16.d4+-) 16.Qg8 Qf8 17.Nf7 Qg8 18.Bg8 Nd7 (18...Kf8 19.Nd8 Kg8 20.Nb7+-) 19.Ng5 Nf6 (19...e5 20.d4+-) 20.Be6 Ke7 21.Bf5 (21.d4 Bc8 22.Bc8 Rc8+-) 21...d4 22.0-0 de3 (22...Rg8 23.h4 Bc8 24.Bd3 de3 25.Rae1+-) 23.Rae1 Rg8 (23...Bd5 24.Re3 Kd6 25.Be6+-) 24.Re3 Kf8 25.f4 Nd5 (25...Bd5 26.Be6 Be6 27.Re6+-) 26.Rd3 Nf4 27.Rd8 Ke7 28.Rg8 (28.Rg8 Bd5 29.Re1 Kd6 30.Rd8 Kc7 31.Rc8 Kb7 32.Re7 Ka6 33.g3 Ne2 34.Re2+-) 1–0. pierre – mag1987, internet, 2008.

4.Bg7+- Nh6 5.Bh8 (5.Bh6 Qf6 6.Nf3 Qa1=) 5...Ng4 6.e3 Qh4 7.g3 Qg5 8.Nf3 Qg8 9.Bd4 Bd4 10.Nd4 Nc6 11.Nc6 bc6 12.Be2 Nf6 13.Nc3 Qg5 14.0-0 d6 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.a3 e5= 5.Nf3 Bc5 6.e3 (worse 6.Ne5 Bf2 7.Kf2 Qb6 8.e3 Qb2 9.Nc6 Qa1-/+ (9...dc6?! 10.Nc3=; 9...bc6?! 10.Nc3=)) 6...d6 7.Nc3 f5 (7...Nge7 8.Be2=) 8.Na4+= Bb6 9.Nb6 Qb6 10.Rb1 Nf6? (better 10...Qc7!?+=) 11.Be5+/- Qd8 12.Ba1 0-0 13.Bc4 Kh8 14.Ng5 (14.0-0 d5 15.Be2 Qd6+/-) 14...d5+/- 15.Ba2 h6 (15...f4 16.0-0+/- (worse 16.ef4 Qe7 17.Qe2 Qa3+=)) 16.h4 (better 16.Nh3+-) 16...hg5?? (better 16...f4+/-) 17.hg5+- Nh7 (17...Kg8 18.Bf6 Rf6 19.gf6 Qf6 20.Bd5 Kf8+-) 18.Qh5 Kg8 19.g6 Re8 20.Qh7 Kf8 21.Qg7 1-0. FeegLood (2235) - TheLlamaLord (1950), lichess.org, 2015.

4.c4 e5 5.Nf3 Bc5 6.e3= (6.Be5? Ne5 7.Ne5 Bd4-+).

4.c4 Nge7 5.f3 (5.d4!?+/–) 5...Ng6 (5...Nf5!? 6.Nh3 Bc5+=) 6.e3 f6 (6...Qa5 7.f4=) 7.f4 (better is 7.d4!?+/–) 7...Bc5= 8.Nc3 a6 (8...0-0 9.Nf3=) 9.Ne4 (9.d4 Bb4=) 9...Be7 10.Nf3 0-0 11.Be2 d5 12.cd5 ed5 13.Qb3?? (better is 13.Ng3=) 13...Na5-+ 14.Nf6 Bf6 (14...gf6?! 15.Qd3-+) 15.Bf6 (15.Qb4 Bb2 16.Qb2 b5-+) 15...Rf6 (15...Nb3!? 16.Bd8 Na1 17.Bb6-+) 16.Qa4 (16.Qb4 Nc6 17.Qb3 Bf5-+) 16...b5 17.Qd4 Bb7 (17...Bf5 18.0-0-+) 18.0-0 Qe7 19.f5 (19.Bd3 Nf8-+) 19...Nf8 (19...Rf5 20.Bd3 Nc6 21.Qg4-+) 20.Ne5 Nd7 21.Ng4 Raf8 (better is 21...Rd6-+) 22.Nf6-/+ Nf6 (22...gf6 23.Rfb1 Qe5 24.Qe5 fe5 25.a4+=) 23.Bf3 Nc4 24.g4 Ne4 (better is 24...Ne5!?-/+) 25.d3= Ned2 26.dc4 Nf3 (26...Nf1 27.Rf1 dc4 28.Bb7 Qb7 29.g5+=) 27.Rf3+= dc4 28.Rf4 (28.Rf2 h5+=) 28...Rd8= 29.Qc3 (29.Qa7!?=) 29...Rd3+= (29...Rd3 30.Qb2 Qe3 31.Qf2 Qe5+=) 0–1. GuestTQVC – GuestCMQN, freechess.org, 2017.

4.c4 Nf6 5.d4+= d5 6.cd5 Nd5 (6...ed5 7.e3+=) 7.e4 Nf6 8.Bd3 (8.Nd2 Be7+/–) 8...Be7 (8...b6 9.cb6 Qb6 10.Bc3+/–) 9.Ne2 (9.Nf3 0-0+/–) 9...0-0 10.0-0 a6 (10...Nb4 11.e5 Nfd5 12.Be4+/–) 11.Qb3 (11.e5 Nd5+/–) 11...Rb8 12.Nd2 (12.e5 Nd5 13.Nbc3+/–) 12...Bd7 (better is 12...b6 13.cb6 Rb6+/–) 13.d5+- ed5 14.ed5 Na5 15.Qc3 Ne8 (15...Rc8!? 16.Bh7 Kh7+/–) 16.Qc2 Bf6 (16...Rc8 17.Bh7 Kh8+-) 17.Bh7 Kh8 18.Be4 Qe7 (18...Rc8 19.Rac1+-) 19.Nd4 Bd4 (19...Qd8 20.Rfe1+-) 20.Bd4 f5 21.Bf3 Bb5 22.Rfb1 Qh4 (22...Rc8 23.a4 Bd7 24.Qc3+-) 23.Qc3 (better is 23.Bc3 Nc4 24.Rb4 Rc8+-) 23...Nf6 (23...Rc8 24.a4 Nc6 25.dc6 Bc6 26.Bc6 bc6 27.Rb6+-) 24.a4 Be8 25.g3 Qg5 26.h4 Qg6 27.Qa5 f4 (27...Bf7 28.Qb6+-) 28.Be5 fg3 (28...Rc8 29.Rb7 fg3 30.fg3+-) 29.Bg3 (29.Bb8!? gf2 30.Kf2 Ng4 31.Ke2 Bf7+-) 29...Nh5 (29...Bf7 30.c6 bc6 31.Rb8 Rb8 32.dc6+-) 30.Rb6 (30.Bh5 Qh5 31.Bb8 Qd5+-) 30...Qf7 (30...Nf6 31.c6 Bf7 32.cb7+-) 31.Bb8 1–0. DEFFM – GuestNLRD, freechess.org, 2018.

4.d4 b6 5.cb6 Qb6+=.

4.d4 Nf6 5.c3 a5 6.Nd2+/- a4 (6...b6 7.cb6 d5 8.Rb1+/-) 7.a3 Na5 (7...d6 8.cd6 Bd6 9.e4+/-) 8.Qc2 (8.e4 b6 9.e5 Ng8+-) 8...Nb3 (8...b6 9.cb6 Qb6 10.Rb1+/-) 9.Nb3+- ab3 10.Qb3 Be7 (10...d6 11.cd6 Bd6 12.Nf3+-) 11.e3 0-0 12.Nf3 b5 (12...d6 13.cd6 Bd6 14.Bd3+-) 13.cb6 (13.Bb5!? Bb7+-) 13...Rb8 14.a4 Bb7? (14...Rb6 15.Bb5+-) 15.Qc2 (15.a5 Bf3 16.gf3 d5+-) 15...Nd5?? (better 15...Bf3 16.gf3 Qb6+/-) 16.a5+- Ra8 17.Be2 Ba6 (17...Nf6 18.0-0+-) 18.0-0 Be2 19.Qe2 d6 20.c4 Nb4 21.Rfc1 White prepares c5 (21.d5 Bf6+-) 21...Na6 22.Qd2 Rc8 (22...Qc8 23.Rab1 Rd8 24.e4+-) 23.Qd3 d5 (23...Ra8+-) 24.c5 Nb4 25.Qb3 Nc6 26.a6 Rb8 (26...Qd7 27.Rcb1 Bd8 28.Qb5+-) 27.Qb5 (better 27.a7 Ra8+-) 27...Qd7 (27...Na7 28.Qe2+-) 28.Bc3 (28.a7 Rbd8+-) 28...Ne5 (28...Ra8 29.b7 Ra7 30.Ne5 Ne5 31.b8Q+-) 29.Qd7 (29.Ne5?! Qb5 30.a7 Rfd8+-) 29...Nd7 30.Rcb1 Nc5 (30...Bc5 31.dc5 Nc5 32.Be5+-) 31.dc5 Bc5 32.b7 Ba7 33.Bd4 Bd4 34.Nd4 e5 35.Nc6 Rbd8 36.Nd8 Rd8 37.b8Q Rf8 38.a7 g6 (38...h6 39.Qf8! Kh7 40.Qf7 d4 41.a8Q e4 42.Qag8) 39.Qe5 Rb8 (39...f6 40.Qe7 d4 41.a8Q Ra8 42.Ra8) 40.Rb8 (40.ab8Q) 1-0. ClayPigeons (2135) - felicia2020 (2080), Rated Bullet game, lichess.org, 2020.

4.d4 Nf6 5.c3 d5 6.cd6 Bd6 7.Nd2 0-0 8.Ngf3 h6 (8...e5 9.e4+=) 9.e3 a6 (9...Be7 10.e4+/-) 10.Bd3 b5 (10...e5 11.0-0+/-) 11.0-0 Bb7 12.c4 Nb4 13.Bb1 bc4 14.Nc4 Be7 15.Nce5 Nbd5 16.Qd3 (16.e4 Nc7 17.Re1 Rb8+/-) 16...Nb4 (better 16...Rb8+/-) 17.Qd1 Nbd5 18.a3 Nd7 19.Qd3 f5 (19...N5f6 20.Bc3+/-) 20.Ng6 Rf6 21.Nfe5 (21.Ne7 Qe7 22.Ba2 N5b6+/-) 21...Ne5 (21...Bd6 22.Qe2+/-) 22.Ne5 (22.de5? Rg6 23.g3 Rc8-+; 22.Ne7?! Qe7 23.de5 Rg6+/-) 22...Bd6 23.f4 Rc8 24.Rf2 Qc7 25.Rc2 Qb8? (25...Qd8 26.Rc8 Qc8 27.Ba2+/-) 26.Rc8 (26.Nd7 Rc2 27.Bc2+- (27.Nb8 Rg2 28.Kg2 Nf4 29.Kf1 Nd3 30.Bd3 Bb8-/+; 27.Qc2?! Qe8 28.Nf6 Nf6+-; 27.Nf6?! Nf6 28.Qc2 Nd5+-)) 26...Qc8 27.Ba2 Qf8? (27...Be5 28.fe5 Rg6 29.g3+/-) 28.Rc1 (better 28.Nd7!? Qe7 29.Nf6 Qf6 30.Qb3+-) 28...Be5 29.de5 Rg6 30.g3 Rg4 (30...Qd8 31.Bd4+/-) 31.Qb3 (better 31.Bd5 Bd5 32.Qa6+-) 31...h5?? (better 31...Qf7+-) 32.Qb7 Ne3 (32...Ne7 33.Be6 Kh8+-) 33.Be6 Kh8 34.Bd4 (34.Rc8 Qc8 35.Qc8 Kh7 36.Qg8 Kg6 37.Bf7 Kh6 38.Qh8) 34...Qa3 35.Qc8 (35.Rc8 Kh7 36.Bg8 Kh8 37.Bf7 Kh7 38.Rh8 Kh8 39.Qc8 Qf8 40.Qf8 Kh7 41.Qg8 Kh6 42.Qh8) 35...Kh7 36.Bg8 Kg6 (36...Kh8 37.Bf7 Qf8 38.Qf8 Kh7 39.Qg8 Kh6 40.Qh8) 37.h3 (37.Qe6) 37...Rg3= 38.Kf2 (38.Kf2 Ng4 39.hg4 Qf3 40.Ke1 Qe4 41.Kf1 Qg2 42.Ke1 Qe4 43.Kf1 Qg2 44.Ke1 Qe4=) 1-0. ClayPigeons (2150) - tomthomas1234 (2135), Rated Bullet game, lichess.org, 2020.

4.e3 Qa5 5.Nc3 Qc5 6.Nf3 b6 7.Be2 Qb4 8.Rb1 Qg4 9.0-0 Bb7 10.h3 Qg6 11.Bd3 Qh5 12.Nd4 Qd1 13.Rbd1 Nd4 14.ed4 f5 15.a3 Nh6 16.Ne2 g5 17.d5 Rg8 18.de6 de6 19.Bb5 Kf7 20.Nc3 g4 21.h4 f4 22.Rde1 Bd6 23.Ne4 Bc5 24.Ng5 Ke7 25.Re6 Kf8 26.Rh6 g3 27.Nh7 Kf7 28.Ng5 Kf8 29.Ne6 Ke7 30.Nc5 gf2 31.Rf2 bc5 32.Rh7 Kd6 33.Rb7 Rg6 34.Rf4 Rag8 35.Rf2 Kd5 36.Ra7 Rb8 37.c4 Ke4 38.Re7 Kd3 39.Be5 Rh6 40.Bb8 1–0. Phomopsis (1680) – Rully1308 (1640), lichess.org, 2020.

4.e3 a6 5.Nf3 b6 6.cb6 Qb6 7.Bd4 Qc7 8.c4 Bb7 9.Nc3 h5 10.Be2 e5 11.Nd5 Qb8 12.Bb6 Bd6 13.c5 Nd4 14.ed4 Bd5 15.de5 Bc7 16.Rb1 Be5 17.d4 Bc7 18.0-0 Nf6 19.Ne5 Be5 20.de5 Qe5 21.Re1 0-0 22.Bc4 Qg5 23.Bd5 Nd5 24.Qd3 Rfe8 25.Red1 Nf4 26.Qf3 h4 27.g3 hg3 28.hg3 Ng6 29.Rd7 Rf8 30.c6 Nh4 31.Qf4 Qf4 32.gf4 Nf3 33.Kg2 Nh4 34.Kg3 Nf5 35.Kf3 Rac8 36.c7 g6 37.Ba7 Kg7 38.Rb8 Kf6 39.Rc8 Rc8 40.Bb6 Nh4 41.Kg4 Nf5 42.Rd8 Nh6 43.Kg3 Nf5 44.Kg2 Ne7 45.Kf3 Ke6 46.Ke2 Kf5 47.Kf3 g5 48.Kg3 gf4 49.Kf3 Ke6 50.Kf4 Nd5 51.Ke4 Nb6 52.Kd4 Rc7 53.Rb8 Nd7 54.Ra8 Rc6 55.Rd8 f6 56.Rd7 Kd7 57.Kd5 Rc2 58.f4 Ra2 59.f5 Rb2 60.Ke4 a5 61.Kd3 a4 62.Kc3 a3 63.Kc4 Rb1 64.Kc3 a2 65.Kd4 a1Q 66.Ke3 Rb3 67.Kf4 Qa4 0–1. OnlyPolishOpening (1850) – adversaurio (1740), lichess.org, 2020.

4.e3 b6 5.cb6 ab6 (5...Qb6 6.Ba3 Ba3 7.Na3+=) 6.Nf3 Ba6 (6...Nf6 7.Nc3+=) 7.Ba6+/– Ra6 8.0-0 Nf6 9.Qe2 Ra8 10.e4 d6 (10...Bc5 11.d4 Be7 12.Rd1+-) 11.Qb5 Qc7 12.Bf6 gf6 13.Nd4 Rc8 (13...Kd7 14.Nb3+/–) 14.Nc3+- Be7? (better is 14...Ke7 15.Nb3 Bg7+-) 15.Nd5! ed5 16.ed5 0-0 17.dc6 Ra8 (17...d5 18.Qd3+-) 18.Qd5 Ra5 (18...Rfc8 19.Rfe1 Ra5 20.Qf3+-) 19.Nb5 Rb5 20.Qb5 Ra8 (20...Rc8 21.Rae1 d5 22.Qd5+-) 21.Rfb1 (21.Rab1 Ra2 22.Qb3 Ra5 23.Qb6 Qb6 24.Rb6 Rc5+-) 21...Bd8 (21...Rc8 22.Qb6 Qc6 23.Qc6 Rc6 24.a4+-) 22.Rb3 (22.Re1 Be7+-) 22...Ra5 23.Rg3 Kf8 24.Qd3 Qc6 25.Qh7 Rc5 (25...Ke7+-) 26.Rg7 Qd5 27.Re1 Qe5 (27...Qg2 28.Kg2 Rg5 29.Rg5 fg5 30.Qh8) 1–0. DEFFM – GuestBKPX, freechess.org, 2017.

4.e3 Nf6 5.d4 Be7 6.Nf3 0-0 7.Be2 Rb8 (7...b6 8.cb6 Qb6 9.Bc1+=) 8.0-0 (8.c4 d6 9.cd6 Bd6+-) 8...b6+= 9.Ba3 (9.cb6!? Rb6 10.Qc1+=) 9...bc5= 10.Bc5 Bc5 11.dc5 Qa5 12.Nbd2 Qc5 13.Rb1 Rb1 14.Qb1 Ba6?? (better 14...d5=) 15.Ba6+- Nb4 16.a3?? (better 16.Bd3+-) 16...Na6= 17.Qb7 Qc6 (17...Nb8 18.Rb1 Nc6 19.Qb3=) 18.Qa7 (18.Rb1 Qa4+=) 18...Ra8= 19.Qd4 Qc2 20.Ne5 The backward pawn on d7 becomes a target (20.Qc4 Qc4 21.Nc4 Nc5=) 20...Nd5 (20...d5 21.Ndf3=+) 21.Ne4 (21.e4 Qc3 22.Nef3 Qd4 23.Nd4 Nf4=) 21...Rd8 (better 21...Nac7 22.Nd6 f6=) 22.Qa7?? (22.Nd6 f6 23.Qc4 Nc3+=) 22...Nac7?? (better 22...Qe4 23.Nf7 Kf7 24.Qa6 d6-+) 23.Nd6= f6 24.e4 (better 24.Nec4 Nb5 25.Nb5 Qc4 26.a4=) 24...fe5-/+ 25.ed5 Nd5 (25...ed5?! 26.Qe3 e4 27.Nf5=) 26.Re1 (26.Qa5 Rf8 27.Qa6-/+) 26...e4 (better 26...Qc6 27.Nb7 Nf4-+) 27.h3?? (27.Ne4 Nf4=) 27...Nf4?? (27...e3 28.Kh2 Qf2 29.Qa5 Qf4 30.Kh1-+) 28.Re4?? (28.Ne4!? Ne2 29.Kf1 Qe4 30.Re2=) 28...Ne2 (better 28...Qd1 29.Kh2 Qd6-+) 29.Kh1?? (better 29.Kh2 Qd1 30.f4 Qd6 31.Re2 Qf4 32.g3-/+) 29...Qd1 30.Kh2 Qg1 0–1. Markzela (1710) – johnbjornar (1690), lichess.org, 2020.

4.d4 a6 5.Nf3 b6 6.cb6 Qb6 7.Bc1 +/–.

4.d4 a6 5.Nf3 Be7 6.e3 (6.e4 d6 7.cd6 Bd6+/–) 6...Nf6 7.Bd3 (7.c4 b6 8.cb6 Qb6+/–) 7...h5 (7...b6!?+/–) 8.0-0 Nc6 9.Nbd2 Ng4 (9...d6 10.cd6 Bd6 11.e4+-) 10.h3 b5 11.Ne4 (better is 11.a4 ba4 12.hg4 hg4+-) 11...Bb7? (11...Nf6 12.Nf6 Bf6 13.a4 ba4 14.Ra4+-) 12.c3 (12.d5 ed5 13.Nd6 Bd6 14.cd6 Qd6+/–) 12...0-0-0? (better is 12...Nf6+-) 13.a4 (13.hg4?! hg4 14.a4 gf3+=) 13...f5 14.Ned2 (14.Nd6 Bd6 15.cd6 Qd6 16.ab5 Nd4 17.cd4 Bf3 18.Qc1 Kb8+-) 14...Na7 (14...ba4 15.Qa4 (15.hg4?! hg4 16.Qa4 Rh7 17.Ba6 Rdh8 18.Bb7 Qb7 19.Qa8 Kc7 20.Qb7 Kb7+/–) 15...a5 16.Rfb1+- (16.hg4?! hg4 17.d5 ed5+/–)) 15.ab5 (worse is 15.hg4 hg4 16.Ne5 Rh6+-) 15...Nb5 16.Bb5 (16.hg4 hg4 17.Ne5 Rh6+-) 16...ab5 17.Qb3 (17.c4 bc4 18.hg4 Bf3 19.Nf3 hg4+-) 17...Bc6 (17...Nf6 18.Qb5 Bc6 19.Qd3+-) 18.Ra2 (18.hg4 hg4 19.Ne5 Rh6+-) 18...g5 19.Rfa1 Qb7 (19...Nf6 20.Ne5 (worse is 20.Ng5 Rhg8 21.Ndf3 Qb8+-) 20...Bb7 21.Qb5+-) 20.Ra7 Qb8 21.hg4 hg4 22.Ne5 d6 (22...Bd5 23.c4 bc4 24.Qb8 Kb8+-) 23.Nc6 Qa7 24.Ra7 dc5 (24...Rd7 25.Qb5 Rh1 26.Kh1 Ra7 27.Na7 Kc7 28.Qb6 Kd7 29.Qc6 Kd8 30.Qc8) 25.Qb5 (25.Qe6 Rd7 26.Qd7) 25...Rd7 (25...Rh1 26.Kh1 Rh8 27.Kg1 Rh1 28.Kh1 cd4 29.Qb7) 26.Qb8 1–0. Fournier,Frederic (1710) – guaicaipuro, Active, 2006.

4.d4 a6 5.Nf3 f6 6.e3 Ne7 7.Bd3 b5 8.0-0 Bb7 9.Nbd2 Nbc6 10.a3 Ng6 11.c3 d6 12.Qc2 (12.cd6 Bd6 13.c4 bc4 14.Nc4 0-0+-) 12...Qf7 (better is 12...dc5!? 13.a4 b4+=) 13.cd6+- Bd6 14.c4 bc4 15.Nc4 Rc8?? (better is 15...Bc7+-) 16.Nd6 (16.Nd6 Ke7 17.Nf7 Kf7 18.Qc5+-) 1–0. Fournier,Frederic (1610) – Dwhako, Active, 2007.

4.d4 Nf6 5.e3 Nc6 6.Nf3 b6 7.cb6 ab6 8.Bd3 Bb7 9.Kf1 (9.a3 d5+/–) 9...h5 (9...Nb4 10.Nc3=) 10.Ke2 (10.a3 d5+=) 10...Ng4 11.h3 Nf6 12.Nbd2 (12.Nc3 Nb4+=) 12...Ba6 13.c4 Nb4 14.Qb3 Nd3 15.Qd3 Be7 (15...d5 16.Rhc1=) 16.Rhc1+= Bb7 (16...d5 17.Qb3+=) 17.Kf1 g5 18.Ng5 Qh2 19.g3 Qg2 (19...h4 20.gh4 Rh4 21.Ke2+/–) 20.Ke2 Rg8 21.Rg1 Qc6 22.h4 Ng4 0–1. Fournier,Frederic (1780) – guaicaipuro, Active, 2006.

4.d4 Nf6 5.e3 d6 6.cd6 Bd6 7.Nf3+=.

4.d4 Nf6 5.e3 Be7 (5...d6 6.cd6 Bd6 7.Nf3+=) 6.Nf3 0-0 7.Be2 b6 8.cb6 Qb6 9.0-0?? (better is 9.Bc1+=) 9...Qb2-+ 10.Nbd2 Qb6 (10...Nc6 11.Nc4 Qb8 12.Nfe5-+) 11.c4 Bb7 12.c5 Qc6 13.Rb1 d6 (13...Qc7 14.Qb3 Bd5 15.Bc4-+) 14.Bb5 (14.Qb3!? Bc8-+) 14...Qc7 15.c6 (15.cd6 Bd6 16.Rc1-+) 15...Bc6 16.Bc6 Qc6 17.Qb3 Nbd7 (17...Rc8 18.Qb2-+) 18.Nc4 (18.Rfc1 Qa6-+) 18...Ne4 (18...Rab8 19.Qd3-+) 19.Qd3 (19.Na5 Qc7 20.Qb7 Rfc8-+) 19...d5 (19...Rfc8 20.Na5 Qc2 21.Qc2 Rc2 22.Rb7-+) 20.Ncd2 (20.Nce5 Ne5 21.Ne5 Qc3-+) 20...Nd2 (20...Rfc8 21.Rb2-+) 21.Qd2 e5! 22.de5 (22.de5 Nb6 Combination; 22.Ne5 Ne5 Combination) 22...Ne5?? (better is 22...Rfb8-+) 23.Ne5+= Qd6 24.Nf3 Bf6 25.Rfd1 Rad8 (25...Rfb8 26.e4 Rb1 27.Rb1=) 26.Qb4 (26.Qa5 Qc6+=) 26...Be7 (better is 26...Qb4!? 27.Rb4 Rd7+=) 27.Qd6+/– Bd6 28.Nd4 Be5? (better is 28...Rfe8+/–) 29.Nf3 f5?? (better is 29...Bd6=) 30.Ne5+- f4 (30...Rfe8 31.f4+-) 31.ef4 Rf4 32.g3 (32.Nc6 Re8 33.Rd5 Re2+-) 32...Rff8 (32...Rf6 33.f4 h6 34.Rd4+-) 33.Kg2 (33.Rb7 h6+-) 33...Rfe8 34.Nd3 (34.Nc6 Rd7+-) 34...Rd7 (34...d4 35.Rb7 a6 36.Rc1+-) 35.Nf4 Red8 (35...d4 36.Rb4+-) 36.Rd5! (36.Rd5 Rd5 37.Nd5 Rd5 38.Rb8 Kf7 39.Rb7 Kf6 40.Ra7+-) 1–0. Fournier,Frederic (1865) – Gregmontero, Active, 2005.

4.d4 Nf6 5.Nf3+=.

4.Nf3 Qc5 5.e4+=.

4.d4 b6 5.cb6 Qb6 6.Bc3 d5 7.e3 Ba6 8.Bd3+=.

4.d4 Bc5?? 5.dc5+- d5 (5...Qa5 6.Qd2 Qc5+-) 6.cd6 Nd7 (6...Nh6 7.e4+-) 7.e3 Qb6 8.Qd4 Qa5 (8...e5 9.Qb6 Nb6 10.Nc3+-) 9.Bc3 (9.Nc3 Nh6+-) 9...Qa2 (9...Qf5+-) 10.Ra2 1–0. GuestRSYJ – GuestJGMB, freechess.org, 2017.

4.d4 Nc6 5.c3 Nge7 6.Nd2 Nd5 (6...Ng6 7.e4+/-) 7.Ngf3 Be7 (7...Nc7 8.Nc4+/-) 8.e4+- Nf4 9.g3 Ng6 10.Bg2 (10.d5 Na5 11.d6 Bf8+-) 10...0-0+/- 11.0-0 d5 12.cd6! Bd6 (12...Qd6 13.Rb1 Combination; 12...Bd6 13.Rb1 Combination) 13.Qb3 b6 (13...Na5 14.Qc2+/-) 14.a3 (14.Nc4 Be7+-) 14...Kh8 (14...Na5 15.Qb5+/-) 15.c4 (15.Nc4 Ba6+/-) 15...Na5 (15...e5 16.d5 Na5 17.Qd3+/-) 16.Qc2 Ba6 17.Rfc1 Rc8 18.Bf1 (better 18.Qa4 Qe8 19.Qe8 Rfe8 20.Bf1+/-) 18...h5?? (18...Nc4 19.Nc4 Bc4 20.Bc4+/-) 19.h4 (19.e5 Ne5 20.de5 fe5+-) 19...f5? (19...e5 20.Qd1 Qe8 21.Ne1+-) 20.e5 (better 20.Ng5!? Qe8 21.Qd1 Nh4+-) 20...Be7 21.Qd1 f4 (21...Kh7 22.d5! ed5 23.Nd4+-) 22.Ne1 f3 (22...Rf5 23.Bh3 Qf8 24.Qe2+-) 23.Nef3 Kg8 24.Ne1 Bh4 25.Qh5 (better 25.Bh3 Re8 26.Qc2+- (26.gh4?! Qh4 27.Rc3 Nf4+-)) 25...Bg3 (25...Qg5 26.Qg5 Bg5+-) 26.fg3 (26.Qg6?! Bf2 27.Kg2 Bb7 28.Nef3 Be3+-) 26...Qe8 (26...Rf1 27.Kf1 Ne7 28.Nef3 Nc4 29.Ng5 Qf8 30.Ke1+-) 27.Bd3 Ne7 (27...Rf5 28.Bf5 ef5 29.Qf5 Nc4 30.Nc4 Bc4+-) 28.Qh7 (28.Bh7 Kh8 29.Bg6 Kg8 30.Qh7) 28...Kf7+- 29.Ng2 (better 29.Ne4 Nf5 30.Nd6 Nd6 31.Bg6 Ke7 32.ed6 Kd6 33.c5 Kd7 34.Be8 Rfe8+-) 29...Nf5 (29...Rh8 30.Qe4 Kg8 31.Qg4+-) 30.g4 (better 30.d5 Ke7 31.Nf4 Nc4 32.Nc4 Bc4 33.Bc4 ed5+-) 30...Ke7 (30...Rh8 31.Qh8! Qh8 32.gf5 Qh3 33.fe6 Ke7+-) 31.gf5 ef5 32.d5 Qd7 (32...Qf7 33.Nh4 Kd8 34.Nf5+-) 33.d6 (better 33.e6 Qb7 34.Qg7 Ke8 35.Qg6 Ke7+-) 33...Kd8 34.Rf1 Rc5 (34...Rc6+-) 35.Bf5 Rf5 36.Qf5 (better 36.Rf5 Kc8 37.Qg8 Kb7+-) 36…Kc8 (36...Kc8 37.Qf8 Kb7+-). ClayPigeons (2215) - Mortinho (2275), Rated Bullet game, lichess.org, 2019.

4.d4 Nc6 5.e4 e5 6.d5 (6.c3 d5+-) 6...Nb4? (better 6...Bc5!? 7.Qd2 Qb6=) 7.c3+- Qa5 (7...Na6 8.Ba6 ba6 9.Ba3+-) 8.cb4 Qb4 9.Qd2 Qe4 10.Be2 (10.Ne2 Bc5 11.Nbc3 Qb4+-) 10...Bc5 11.Nf3 Ne7 (11...Qg6 12.0-0+-) 12.Nc3 Bb4?? (better 12...Qg6 13.Nh4 Qf7+-) 13.Ne4 (13.Ne4 Bd2 14.Kd2+-) 1–0. DEFFM – GuestDFJQ, freechess.org, 2020.

4.d4 e5 5.e3 b6 6.de5+- Bc5 (6...Bb7 7.cb6 Qb6 8.Bc3+-) 7.Bc4 (7.Qh5 Kf8+-) 7...Nc6 8.Bg8 Ne5?? (better is 8...Rg8 9.Qh5 Kf8 10.ef6 gf6 11.Qh6 Kf7 12.Qh7 Kf8 13.Qh6 Kf7 14.Qh5 Ke6+-) 9.Bd5 (better is 9.Be5 Bb7 10.Bd5 Bd5 11.Qd5 fe5 12.Nf3+-) 9...Rb8 (9...Nc6 10.Qh5 g6 11.Qh4+-) 10.Qc1 (better is 10.Be5 d6 11.Bf4+-) 10...Bb7 11.e4 (11.Bb7!? Rb7 12.Ne2 Nc4+-) 11...Bd5 12.ed5 Nc4 (12...Qc7 13.Nd2+-) 13.Ne2 Qe7 (13...0-0 14.Nd2 Nb2 15.Qb2+-) 14.Nbc3 0-0 (14...b5 15.0-0+-) 15.0-0 Bd4 (15...Rbe8 16.Ng3+-) 16.Re1 (better is 16.Nd4 Rbc8 17.Re1+-) 16...Qc5 (16...Be5 17.a4+-) 17.Nd4 Qd4 18.Re4 (18.Rd1 Qe5+-) 18...Qc5 19.Rc4! Qc4 20.Qd2 Rfe8 21.h3 (21.a3 Rbc8+-) 21...b5+/– 22.Nd1 (22.a3 a5 23.Nd1 Re2 24.Qa5 Qc2+/–) 22...Re2 23.Qd3 (23.Qd4 Qd4 24.Bd4 Rc2+/–) 23...Re1 (23...Qc2 24.Qg3 Re1 25.Kh2+=) 24.Kh2+/– Qc7 (24...Qd3!? 25.cd3 Rc8+=) 25.Qg3+- d6 (25...Qg3 26.Kg3 b4 27.Ne3 Ra1 28.Ba1+/–) 26.Ne3 (better is 26.Bf6 Re2 27.Rc1+-) 26...Re3? (26...Ra1 27.Ba1 Kh8+-) 27.fe3 (27.Qe3 Kh8+-) 27...Qc2 (27...Qe7 28.Rb1+-) 28.Bf6 g6 (28...Rb7 29.Bd4 Rd7+-) 29.Qd6 Rf8 30.Qe6 (30.Bd4 Qf5+-) 30...Rf7 31.Rf1 Qe2 (31...Qc7 32.d6 Qd7+-) 32.Rf3 (32.Rc1 Qg2 33.Kg2 h5 34.Rc8 Kh7 35.Rh8) 32...Qa2 33.Qe8 (33.Bb2! Qb2 34.Qf7 Kh8 35.Qf8) 33...Rf8+- 34.Qe7 (34.Qe5 Qa6 35.Bh8 Qb7 36.Qe6 Kh8 37.Rf8 Kg7 38.Qf6 Kh6 39.Rh8 Qc7 40.d6 Qc4 41.Qf8 Kh5 42.g4 Qg4 43.Rh7 Kg5 44.Qe7 Kf5 45.Rf7) 34...Rf7 35.Qe6 b4 (35...Qe2 36.Bd4 Qf3 37.gf3 Kf8 38.Qc8 Ke7 39.Bc5 Kf6 40.Qd8 Kf5 41.Qh4 g5 42.Qe4 Kf6 43.Bd4) 36.Bd4 Qa5 (36...Qg2 37.Kg2 Kf8 38.Qf7) 37.Qf7 1–0. GuestFRKZ – Guestiwin, freechess.org, 2016.

4.e3 Qa5 5.Nc3 (5.Ba3 Nc6 6.Bd3 f5 7.Qh5 g6 8.Qd1+=) 5...Bc5 6.Bb5 e5 7.Qg4 Bf8 8.Nf3+=.

4.e4 Qa5+= 5.Nc3 (5.a3 Nc6 6.Nf3 Bc5 7.Bc3 Qa4 8.d4+=; 5.c4 e5 6.Bc3 Qc5 7.Nf3 b6 8.d4+=; 5.Bd4 e5 6.Bc3 Qc5 7.d4 ed4 8.Bd4+=; 5.Ba3 b6 6.Qh5 g6 7.Qh4 Bc5 8.Bc5=) 5...Bc5 6.Nb5 e5 7.Bc3 Qb6 8.d4+=.

4.e4 Bc5?? 5.Qh5+- Kf8 6.Qc5 Ne7 7.Bc4 (7.Qd6 b6+-) 7...b6 8.Qa3 d5 9.ed5 ed5 10.Qf3 Kf7 11.Bb3 Be6 12.Ne2 Nf5 (12...Re8 13.0-0 Qd7 14.Re1+-) 13.0-0 Re8 (13...Nc6 14.Nf4 Ncd4 15.Bd4 Nd4+-) 14.Nf4 g6 (14...Nh4 15.Qh5 Ng6 16.Ne6 Re6 17.Bd5+-) 15.Ne6 Ke6 16.Re1 Kd6 17.Re8 Qe8 18.Ba3 (better is 18.Nc3!? Nc6 19.Nd5 Qd8+-) 18...Kc7 19.Nc3 Ne7 (19...Nc6+-) 20.Qf4 (20.Be7 Nc6 21.Nb5 Kb8 22.Qf4 Ne5 23.Bf6 Qb5 24.Qe5 Kb7+-) 20...Kc8 21.Re1 Nbc6 22.Nd5 Ne5 23.Re5 (better is 23.Ne7!? Kb7 24.Bd5 Ka6+-) 23...fe5 24.Qe5 Qd7 25.Ne7 Kb7 26.Bd5 Ka6 27.Bc6 Qd2 (27...Qd3 28.cd3 Re8 29.Qb5) 28.Qb5 1–0. marus – chico, internet, 2001.

4.e4 Bc5 5.Qh5 g6 6.Qc5 1–0. pierre – opporax, internet, 2010.

4.Nc3 Bc5= 5.d4 (5.e3 0-0=) 5...Bb4 6.e3 Qc7 7.Qd3 d5 8.Nf3?? (better is 8.a3 Ba5 9.Rb1+=) 8...Ne4-+ 9.Qb5 Nc6 10.Qd3 0-0 (better is 10...Qa5 11.Nd2 Bc3 12.Bc3 Qc3 13.Qc3 Nc3 14.Nb1-+) 11.0-0-0?? (11.a3 Ba5 12.Nd2 Nc3 13.Bc3 Ne5 14.de5 Bc3-+) 11...Nd6 12.e4 de4 13.Ne4+= Ne7 14.Nd6 Bd6+= 15.g3 Bd7 16.Ng5 g6 17.h4 h5 18.Ne4 Bb4?? 19.Nf6 Kg7 20.d5 Kh6?? 21.Qe3 Kg7 22.Ne8 (22.Ne8 Kh7 23.Nc7+-) 1–0. hockhin (2395) – rpatru (2180), net–chess.com, 2010.

4.c4 Bc5 5.e3 0-0 (5...Nc6 6.d4 Bb4 7.Nc3 d5 8.a3 Bd6=; 5...d5 6.cd5 ed5 7.Bf6 Qf6 8.Nc3 Qd8=) 6.d4 Bb6 (6...Bb4 7.Bc3 Be7 8.Nf3 d5=) 7.Nf3 Re8 (7...d5 8.Bd3 dc4=) 8.Qc2 (8.Bd3 d6=) 8...h6 (8...Nc6=) 9.e4 e5 (9...d6!?=) 10.de5+= (worse is 10.Ne5 d6 11.Nf3 Ne4-/+) 10...Ng4 11.Be2?? (better is 11.c5 Bc7 12.Nbd2+=) 11...Bf2-+ 12.Kf1?? (12.Kd2 Nc6-+) 12...Be3 (better is 12...Ne3 13.Kf2 Nc2-+) 13.Nd4 (13.h3 Nf2 14.Rh2+=) 13...Ne5-+ 14.Nf5 Bg5 (14...Bc5 15.Nd2-+) 15.Bd3 (15.c5!?-/+) 15...d6 16.Nd2 Bf5 17.ef5 Qf6 18.Ne4 (better is 18.Nf3-+) 18...Qd8 (better is 18...Qf5!? 19.Qf2 Qf2 20.Nf2 Nd3 21.Nd3 Re4-+) 19.g3 (19.Nd2 Nbc6 20.Be2 d5 21.Be5 Ne5 22.cd5 Qd5-+) 19...Nf3 (better is 19...Na6 20.a3 Rc8 21.Be5 Re5-/+) 20.Kg2= Re4?? (better is 20...Ne5 21.Kf1 Na6-/+) 21.Be4+- Ne5 22.f6 (better is 22.Be5 de5 23.Bb7+-) 22...Bf6+/– 23.Bh7 (better is 23.Be5!? Be5 24.Rab1+/–) 23...Kh8= 24.Bf5 Qb6 25.Be5 Qc6?? (better is 25...Be5 26.Rab1 Qc7=) 26.Be4+- (26.Be4 Qc7 27.Bf6 gf6 28.Qf2+-) 1–0. Nautiluschess – Newcomf, ICS blitz, 2000.

4.c6 Nc6 5.e3 Be7 6.Nf3 0-0 7.Bb5 d5 8.Bc6 bc6 9.0-0 Bd7 10.Re1 Rb8 11.d4?? (better 11.Be5 Rb7 12.Nc3=+) 11...Rb2-+ 12.Qc1 Rb8 13.Nc3 (13.c4 c5-+) 13...Qc7 (better 13...Bb4 14.Na4 Be1 15.Qe1-+) 14.Qd2 (14.Ne2 c5-+) 14...Qa5 (14...Bb4 15.Qd3 c5 16.Ne2 Be1 17.Ne1-+) 15.Rab1 (15.a3 Rfe8-+) 15...Bb4 16.Rb4 Qb4 17.Rb1 Qa5 18.Rb8 Rb8 19.h4 (19.g3 Qc7-+) 19...Rb2 20.Qd3 Rb8 21.Ne2?? (21.Qd2 Qc7 22.Ne5-+) 21...c5 (21...Rb1 22.Kh2 Ne4 23.Ng3 Nf2 24.Qd2 Qd2 25.Nd2-+) 22.Nf4 (22.Nc3 Rc8 23.Nd1 Qa2-+) 22...Bb5 23.Qd2 Qd2 24.Nd2 cd4 25.ed4 Rc8 26.Kh2 (26.c3 Rc3 27.Nb3 Bc4-+) 26...Rc2 27.h5 (27.Nf3-+) 27...Rd2 28.h6 Rf2 29.hg7 Rd2 (better 29...Rf4 30.a3-+) 30.Kh3 Kg7 31.g3 h5 (31...Bf1 32.Ng2 Bg2 33.Kh2 Ng4 34.Kg1 Bf3 35.a3 Rd1) 32.Kh4 (32.Nh5 Nh5 33.a4 Bf1 34.Kg4 Be2 35.Kh3 f5 36.Kg2 Bc4 37.Kg1 Ng3 38.a5 Bf1 39.a6 Rg2) 32...Kh6 (32...Rh2 33.Nh3 Ne4 34.g4 Bf1 35.gh5 Bh3 36.h6 Kh6 37.a3 Bf5) 33.Nh5 Rh2 0-1. anotherheaven (1645) - MattyDPerrine (2290), Daily Bullet Arena, lichess.org, 2015.

4.d4 a5 5.c4 Na6 6.e3 d6 7.cd6 Bd6 8.Nf3 Qb6 (8...b6 9.Nc3+/-) 9.Qc2 Qc7 10.Bd3 (10.c5 0-0+/-) 10...b6 (10...Nb4 11.Qd1+/-) 11.0-0 (11.a3!?+/-) 11...Nb4 12.a3?? (12.Qc3 Bb7 13.Nbd2 Ng4+/-) 12...Nd3 (better 12...Nc2 13.Bc2 Qc4-+) 13.Qd3+/- Bb7 14.h3 (14.Nbd2 Ng4 15.h3 Nh2+/-) 14...Bf3+= 15.gf3 Qb7 (15...Rc8 16.Nd2+=) 16.d5 Rd8 17.Bf6 gf6 18.de6?? (better 18.f4!?+/-) 18...fe6 (18...Rg8 19.Qg6 Rg6 20.Kh1 Qf3) 19.Qc3?? (better 19.Qe4 Qg7 20.Kh1=+) 19...Qf3 (19...Rg8 20.Kh1 Qf3) 20.Qc1 (20.Qd4 Rg8 21.Qg4 Rg4 22.hg4 Qg4 23.Kh1 Qh3 24.Kg1 Qh2) 20…Rg8 0-1. fishissushi (2005) - HerrDiemer (2265), Casual Bullet game, lichess.org, 2020.

4.d4 Qa5 5.Bc3 Qd8 6.Nf3 Be7 7.e3 0-0 8.Be2 Nc6 9.0-0 Ne4 10.Qd3 f5 11.Nbd2 Nd2 12.Qd2 a5 13.Rab1 Qc7 14.Bb5 Bf6 15.Bc6 Qc6 16.Ba5 Qa4 17.Bc3 Qc6 18.Rb6 Qc7 19.Ra1 d6 20.Rd6 Rd8 21.Rd8 Qd8 22.Bb2 Qd5 23.a3 Bd7 24.Bc3 Bc6 25.Bb4 g5 26.Qc1 g4 27.Ne1 h5 28.c4 Qe4 29.Qc2 h4 30.Qe4 Be4 31.g3 h3 32.a4 e5 33.de5 Be5 34.Ra3 Bb2 35.Rb3 Be5 36.a5 Bc7 37.Ra3 Ra6 38.Kf1 Ra8 39.Ke2 Rd8 40.a6 ba6 41.Ra6 Be5 42.Ra2 Rb8 43.Bd2 Rc8 44.Nd3 Bd3 45.Kd3 Rc5 46.Ra5 Ra5 47.Ba5 Kf7 48.c5 Ke6 49.c6 Kd6 50.c7 Kd7 51.Kc4 Bc7 52.Bc7 Kc7 53.Kd5 Kd7 54.Ke5 Ke7 55.Kf5 Kf7 56.Kg4 Kg6 57.Kh3 Kf5 58.f3 Kg5 59.f4 Kf5 60.Kh4 Ke4 61.Kg5 Ke3 62.g4 Kf3 63.h4 Ke4 64.f5 Ke5 65.f6 Ke6 66.Kg6 Ke5 67.Kg7 Kf4 68.h5 Kg4 69.h6 Kg5 70.f7 Kh5 71.f8Q Kg5 72.Qf6 Kg4 73.h7 Kg3 74.h8Q Kg4 75.Qhh4 1–0. Phomopsis (1740) – ndukwugc (1740), lichess.org, 2019.

4.d4 Qa5 5.Nd2 Nc6 6.e3 b6 7.cb6 ab6 8.Ngf3 Ba6 9.Ba6 Ra6 10.0-0 d5 11.c4 Nb4 (11...dc4 12.Nc4 Qd5 13.Qe2+/-) 12.a3 (12.cd5 ed5 13.Ne5 Qa4+-) 12...Nc6 (12...Nd3 13.Qb3 Nb2 14.Qb2+/-) 13.cd5 Nd5 14.Nc4 (14.Re1 Qb5 15.Rb1 f5+-) 14...Qa4+/- 15.Nce5 Bd6?? (better 15...Ne5 16.Ne5 Bd6+/-) 16.Qa4+- (16.Qa4 Ra4 17.Nc6+-) 1-0. javirod1983 (2610) - Ader87 (2600), Rated bullet game, lichess.org, 2024. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

4.d4 Qc7 5.Nf3 b6 6.cb6 ab6 7.e3 Bb7 8.Be2 h5 (8...Bf3 9.Bf3 d5 10.Nd2+-) 9.0-0 Ng4 10.h3?? (better 10.Nbd2+-) 10...Bf3-+ 11.hg4 (11.g3 Ne3! 12.Qc1 Be2 13.Re1-+) 11...hg4 12.Bf3 (12.Re1 Qh2 13.Kf1 Qg2) 12…Qh2 (12...gf3?! 13.g3-/+) 0–1. Markzela (1760) – Blauauge2508 (2290), lichess.org, 2020.

4.d4 e5 5.de5 Ne4 6.Nf3 Bc5 7.e3 Qb6 8.Bd4 Nc6 9.Bc5 Qc5 10.Bd3 d5 11.ed6 Nd6 12.0-0 0-0 13.Nbd2 Bg4 14.h3 Bh5 15.Nb3 Qa3 16.Be2 Rad8 17.Qc1 (17.Qc1 Qa4 18.Qb2+=) 1-0. diotarolo (2060) - MisterBiggStuff (2145), Rated Bullet game, lichess.org, 2014.

4.d4 Be7 5.Nd2 Nc6 6.Nb3 a5 7.a4 0-0 (7...d6 8.Nf3+=) 8.Nf3 (8.c4 Nb4 9.e3+/-) 8...Nd5 (8...b6!?+=) 9.e3 Ndb4 10.c3 Nd5 11.Bd3 (11.c4 Ndb4+-) 11...Bf6 (11...b6!?+/-) 12.0-0 h6 (12...Be7 13.Qd2+-) 13.Qc2 (13.Qd2 Be7+-) 13...Nde7 (13...b6 14.e4 Nf4 15.Bb5+-) 14.Qe2 (14.e4 e5+-) 14...d5 (14...b6 15.Rab1+-) 15.Bc2 (better 15.cd6!? Qd6 16.e4+-) 15...b6+/- 16.cb6 (16.Bd3 Rb8 17.Rab1 bc5 18.Nc5 e5+-) 16...Qb6 (16...Ba6 17.Bd3 Qb6 18.Nc5 Bd3 19.Qd3+/-) 17.Qd3 (17.Nc5 e5 18.Rab1 Qa7+/-) 17...Ng6 18.Ba3 (18.Rfb1 Qc7+/-) 18...Re8 (18...Ba6!? 19.Qd2 Bf1 20.Bf8 Bc4+/-) 19.Rfb1 Ba6 20.Qd2 Qc7 21.Nc5 Bc4 22.Qc1 (22.Rb7 Qc8+-) 22...Rab8 (22...e5 23.Rb7 Qc8 24.Qb1+/-) 23.Nd2+- Rb1 24.Rb1 (worse 24.Nb1 e5 25.Nd2 Be2+/-) 24...Rb8 (better 24...Be2+-) 25.Nc4 Rb1 26.Bb1 dc4 27.Qc2 (27.Qf1 Nce7+-) 27...Be7 28.g3 (better 28.Ne6!? Qc8 29.Nc5 Bd6+-) 28...Qb6 (28...Nce5 29.Qd1 Bc5 30.Bc5+- (30.dc5?! Qb7+=)) 29.h4 Bc5 30.Bc5 (30.dc5?! Qd8+=) 30...Qb3 31.Qe4 (better 31.Kf1+-) 31...Kh7?? (better 31...Qa4 32.h5 Nf8+=) 32.h5+- (32.Qc6?! Qb1 33.Kg2 Qd3+=) 32...Qd1 33.Kg2 Qh5 34.Qc6 Qd1 35.Qe4 (35.Bg6 Kg6 36.Qe4 Kh5 37.Qe5 Kg6+-) 35...Qb3 (35...Qa4 36.d5 ed5 37.Qd5+-) 36.Bc2 (better 36.Qc2 Qb7 37.f3 h5+-) 36...Qc3 37.Bf8 (better 37.Bd1+-) 37...Qd2?? (37...f5!? 38.Qe6 Qc2=+) 38.Be7 (38.Qe5! f6 39.Qc7 Qf2 40.Kf2 f5 41.Qg7) 38...f5= 39.Qe6 Ne7?? (better 39...Qc2 40.Bf6 Qa4=) 40.Bf5+- (40.Qe7?! Qc2 41.Qe5 c3 42.Qa5 Qe4 43.Kg1 Qb1 44.Kh2 c2 45.Qf5 Kh8 46.Qf8 Kh7 47.Qf5 Kh8 48.Qc8 Kh7 49.Qf5=; 40.Qc4?! h5+-) 40...Nf5 41.Qf5 Kh8 42.Qf8 (better 42.Qc8 Kh7 43.Qc4+-) 42...Kh7+/- 43.Qf5 Kh8 44.d5 (better 44.Qc8 Kh7 45.Qc4+-) 44...c3= 45.Qf8 Kh7 46.Qf5 Kh8 47.d6 (47.d6 Qd6 48.Qc8 (48.Qa5?? Qc6 49.Kh2 Qc8-+) 48...Kh7 49.Qc3 Qd5 50.f3 Qa2 51.Kf1 Qa4 52.Ke2=) 1-0. ClayPigeons (2135) - zsuetam (2275), Rated Bullet game, lichess.org, 2021.

4.d4 Be7 5.Nf3 0-0 6.g3 (6.c4 b6+=) 6...b6 7.cb6 Qb6 8.Bc1 Bb7 9.Bg2 Na6. Vazovski,Sergey (1745) – Colarina,Floram, FICGS, 2010.

4.d4 Be7 5.Nf3 b6 6.e3 (6.cb6 Qb6 7.Bc1 d5+=) 6...bc5= 7.dc5 Bc5 8.Bb5?? (8.Bd3 Nc6=) 8...Qb6?? (better 8...Qa5 9.Bc3 Qb5-+) 9.a4+= a6 10.Bf6 ab5 11.Bg7 Rg8 12.a5 (12.ab5!? Bb7 13.Ra8 Ba8 14.Be5 Rg2 15.Qe2=) 12...Ra5=+ 13.Ra5 Qa5 14.Bc3 b4 15.Bd2? (better 15.Be5 Nc6 16.Bg3=) 15...Rg2-+ 16.Ne5 (16.c3 Bb7 17.cb4 Bb4 18.Bb4 Qb4 19.Nbd2 Na6-+) 16...Be3! 17.Nc4 (17.Be3 Qe5 Annihilates a defender: e5) 17...Bf2 18.Kf1 Qb5?? (18...Qa8 19.Nd6 Kf8 20.Bb4 Na6 21.Ne4 Nb4 22.Qd6 Ke8 23.Nf6 Kd8 24.Qf8 Kc7 25.Ne8 Kb8 26.Qb4 Qb7 27.Qf4 Ka8-/+) 19.Kg2= Bh4?? (better 19...Qc4 20.Kf2 Qh4 21.Ke3 Qg5 22.Kf2 Qh4 23.Ke3 Qg5 24.Kf2 Qh4=) 20.Nd6+- Ke7 21.Nb5 Bb7 22.Kh3 Bh1 23.Bb4 Ke8 (23...Kd8 24.Qd6 Bg2 25.Kg2 Bf6 26.Qb8) 24.Kh4 (24.Qd6 Bg2 25.Kg2 Bf6 26.Qf8) 24...Bc6 25.Nc7 (25.Qd6 Bb5 26.Qb8) 25...Kd8+- 26.Qd6 Kc8 (26...Na6 27.Na6 e5 28.Qf8) 27.Qc6 (27.Ba5 Bh1 28.Nd5 Kb7 29.Qc7 Ka6 30.Qb6) 27...dc6 (27...Nc6 28.Bd6+-) 28.Ne8 Kd7 (28...f5 29.Kg5+-) 29.Nf6 Kc7 30.Nh7 Na6 31.Nc3 (better 31.Bc3 Kd6 32.Kg5+-) 31...Nb4 32.Ne4 (32.Ng5!? Nc2 33.Nf7 Ne1+-) 32...Nc2 (32...f5 33.c3 Nd3 34.Nd2+-) 33.Nhg5 f5 (better 33...Nd4 34.Nf7 Nf3 35.Kg3 Nh2+-) 34.Ne6 Kb6 (34...Kd7 35.N4c5 Kd6 36.Kg5+-) 35.Ng3 (35.N4c5 Ne1 36.h3 f4+-) 35...Ne3 (35...Ne1 36.Ng5 c5+-) 36.Kg5 c5 37.Nf5 (37.h4 f4 38.Nf4 Nc4+-) 37...Nf5 (37...Ng2+-) 38.Kf5 c4 39.Ke4 (39.h4 c3 40.Nd4+-) 39...Kb5 (39...c3 40.Nd4 Kc7+-) 40.h4 Kc6 41.h5 Kd6 42.Nd4 (better 42.h6 Ke6 43.h7+-) 42...Ke7 43.h6 Kf7 44.Nf5 Kg6 45.Kd4 c3 46.Kc3 Kf5 (46...Kh7+-) 47.h7 Kg6 48.h8R (better 48.h8Q Kf5+-) 48...Kf5 49.Rh6 Kg5 50.Ra6 Kf4 51.Ra5 Ke4 52.Rc5 Kf4 53.Rd5 Ke4 54.Kc4 Ke3 55.Rd4 Kf3 (55...Ke2 56.Rd3 Kf2 57.Kd4 Ke2 58.Kc3 Ke1 59.Re3 Kf1 60.Kd2 Kf2 61.Rc3 Kf1 62.Ke3 Kg2 63.Ke2 Kg1 64.Kf3 Kh2 65.Rc1 Kh3 66.Rh1) 56.Kd3 Kf2 57.Re4 (57.Rf4 Kg3 58.Ke3 Kg2 59.Rg4 Kh3 60.Kf3 Kh2 61.Rh4 Kg1 62.Rh3 Kf1 63.Rh1) 57...Kf3 58.Kd4 (58.Kd4 Kf2 59.Kc3 Kg3 60.Kd2 Kf3 61.Rc4 Kf2 62.Rc3 Kf1 63.Ke3 Kg2 64.Ke2 Kg1 65.Kf3 Kh2 66.Rc1 Kh3 67.Rh1; 58.Rb4 Kf2 59.Rf4 Kg2 60.Ke4 Kg3 61.Ke3 Kg2 62.Rg4 Kh3 63.Kf3 Kh2 64.Rh4 Kg1 65.Rh3 Kf1 66.Rh1) 1–0. aravind555 – yuriprm, lichess.org, 2018.

4.e3 b6 5.cb6+/- Qb6 (5...ab6 6.Nf3+/-) 6.Bc3 (6.Bf6 gf6 7.Nc3 Bb7+/-) 6...Nc6 (6...Be7 7.Bd4 Qd8 8.Nf3+=) 7.Nf3 (7.Bf6 gf6 8.Nc3 Bb4+/-) 7...Bb7 (7...Be7 8.a4+=) 8.Be2 Rc8 (8...Be7 9.0-0+=) 9.0-0 (9.Bf6 gf6 10.Nc3 Ne5+/-) 9...a6 10.a4 Qc7 11.Na3 Ng4 12.h3 h5 13.Nc4 (13.hg4?! hg4 14.Re1 d5=) 13...Nb4? (better 13...d5 14.Na3 Nf6+/-) 14.g3?? (14.hg4 hg4 15.Nfe5 d5+-) 14...Nd5?? (better 14...Bf3!? 15.Bf3 Qc4 16.Bb4 Bb4=) 15.Bb2 (15.Ba5 Qc6 16.Rb1 Ndf6+-) 15...h4? (better 15...Ngf6+/-) 16.Nh4?? (better 16.hg4 hg3 17.Be5 gf2 18.Rf2+-) 16...Rh4=+ 17.Bg4 Rh8?? (better 17...Rg4!? 18.Qg4 Qc4 19.Qc4 Rc4=) 18.Ne5 (18.d3 Nf6+/-) 18...Bd6 (18...d6 19.Nd3+=) 19.f4 (19.Rb1 Nf6+/-) 19...Nf6 20.Bf3 (20.Rb1!?+=) 20...Rh3= 21.Kg2 Rh8 22.Rh1 Ke7 (22...Rh1 23.Qh1 Bf8 24.Qc1=) 23.Bd4 (better 23.Rh8!? Rh8 24.Rb1+=) 23...Rh1=+ 24.Kh1 Rh8 (24...Be5 25.fe5 Ng4 26.Kg1 Bf3 27.Qf3 Ne5 28.Qf4=+) 25.Kg2 Bd5 (better 25...Be5!? 26.fe5 Ng4=+) 26.c4+= Bb7 (26...Bc4 27.Rc1 Decoy) 27.Rb1 Bf3 28.Qf3 (28.Kf3? Be5 29.Be5 Qc6 30.Ke2 Rh2 31.Kd3 Ne4-+) 28...g6 (better 28...Qa5!? 29.Qd1 Ne4+/-) 29.Rb7+- Qc8 30.Ng4 (30.Nd7 Nd7 31.Bh8 Qc4 32.Bf6 Ke8+-) 30...Ng4 31.Bh8 Nh6 (31...f5 32.Bc3+/-) 32.Bd4 (32.c5 Bc5 33.Be5 Ng4+-) 32...Nf5 33.c5! Bc5 34.Bc5 (34.Be5 Bd6+-) 34...Qc5+/- 35.Rb3 (35.e4 Nd6 36.Rb8 Qa7+-) 35...Nd6 (better 35...Qc2!? 36.e4 Nd4=) 36.e4+/- Qc4 (36...f6 37.Rd3+/-) 37.e5 Nf5 38.Rd3 (better 38.Rb6+-) 38...Qc5? (better 38...Qa4 39.Ra3 Qb4+/-) 39.Qb7+- Nd4 40.Qe4 (better 40.Qa6 Qd5 41.Kf2+-) 40...Nc6 41.Rc3 Qb6 42.Rc6 (better 42.Qe3 Qb1 43.Qd3+-) 42...Qc6 43.Qc6 dc6 44.d4 c5? (better 44...Kd7 45.Kf3 Kc7+/-) 45.dc5+- Kd7 46.f5 (better 46.Kf3 Kc6 47.Kg4 Kc5 48.Kg5+-) 46...Kc6 (better 46...gf5 47.Kf3 Kc6-+) 47.fg6+- fg6 48.Kf3 Kc5 49.Kg4 Kb4? (better 49...Kd5 50.Kf4 a5=) 50.Kg5+- Ka4 51.Kg6 Kb5 52.Kf6 a5 53.g4 a4 54.g5 a3 55.g6 a2 56.g7 a1Q 57.g8Q Qf1 58.Ke7 Kc5 59.Qe6 Qc4?? (59...Qg2+-) 60.Qc4 Kc4 61.Kd6 Kd4 62.e6 Ke4 63.e7 Kd4 64.e8Q Kc4 (64...Kd3 65.Kd5 Kd2 66.Kc4 Kd1 67.Kd3 Kc1 68.Qb5 Kd1 69.Qb1) 65.Qe6 (65.Qe4 Kb3 66.Qd3 Ka2 67.Kd5 Kb2 68.Kc4 Kc1 69.Qe2 Kb1 70.Kc3 Kc1 71.Qc2) 65...Kd4 66.Qd7 (66.Qd5 Kc3 67.Ke5 Kb2 68.Kd4 Kb1 69.Kc3 Ka1 70.Kb3 Kb1 71.Qd1) 66...Kc4 (66...Ke4 67.Qg4 Ke3 68.Kd5 Kf2 69.Kd4 Kf1 70.Ke3 Ke1 71.Qe2) 67.Qc6 (67.Qg4 Kc3 68.Kc5 Kd3 69.Qf3 Kc2 70.Kc4 Kd2 71.Qf2 Kd1 72.Kd3 Kc1 73.Qc2) 67...Kd4+- 68.Qd5 Kc3 69.Qe5 (69.Qe5 Kb3 70.Kc5 Kc2 71.Kd4 Kb3 72.Qg3 Kc2 73.Qc3 Kd1 74.Qb2 Ke1 75.Ke3 Kd1 76.Qd2; 69.Kc5 Kb2 70.Qd2 Kb3 71.Qd3 Ka2 72.Kc4 Kb2 73.Qe2 Kc1 74.Kc3 Kb1 75.Qb2) 1-0. FeegLood (2380) - ferrari9182 (2335), Time forfeit, lichess.org, 2015.

4.e3 Nc6 5.Nf3 Bc5 6.Rg1 a6 7.g4 b5 (better 7...0-0!?=+) 8.g5+= Ne4 9.Bg7 Rg8 10.Bb2 (10.Bh6 d5+=) 10...Bb7 Will g5 fall? (10...Ng5 11.Rg3=) 11.Bd3 (11.h4 d5+/-) 11...d5 (11...Ng5 12.Nh4 Bf8 13.a4=+) 12.Nc3 (better 12.h4+=) 12...Nd6?? (better 12...Ng5 13.Ke2 Kd7 14.Ng5 Rg5 15.Bh7 Rh5=+) 13.Bh7+- Rh8?! (13...Rf8 14.Ne2 Kd7 15.Bg7+-) 14.g6 (14.Nd5!? Rf8 15.Nf4 Nc4+-) 14...fg6 (14...Ke7 15.Ng5 d4 16.g7 Rh7 17.Nh7 dc3 18.Bc3+-) 15.Bg6 (15.Nd5 Kd7 16.Ng5 Rf8 17.Ne6 Ke6 18.Rg6 Kd7 19.Qg4 Nf5 20.Rg7 Kc8 21.Bf5 Kb8+-) 15...Kd7 16.Nd5! ed5 17.Ng5 (better 17.Bh8 Qh8 18.a4+/-) 17...Rf8?? (better 17...Rh4=) 18.Qg4+- Kc7 19.Ne6 Kb6 20.Nc5 (better 20.Nd8 Rfd8 21.a4+-) 20...Kc5+/- 21.a4 b4 22.a5 Ne4 (22...Qc8 23.d4 Kb5 24.Bd3 Nc4 25.Bc4 dc4 26.Qg6+-) 23.Be4 (23.Bg7 Qe7 24.Bf5 Rf5 25.Qf5 Bc8+-) 23...de4+/- 24.Qe4 Qd5?? (24...Rg8 25.Rg8 Qg8+/-) 25.Qh4 (better 25.d4 Nd4 26.Bd4 Kd6 27.Qg6 Ke7 28.0-0-0+-) 25...Rad8 (25...Rg8 26.Bg7 Kd6 27.Qf4 Kd7 28.Rg5+=) 26.Rg5+/- Rf5 27.d4 Kb5 28.e4 (better 28.Rf5 Qf5 29.c4 bc3 30.Bc3=) 28...Rg5?? (28...Re8 29.Rf5 Qf5-/+) 29.ed5+- Rgd5 (29...Rdd5 30.Qh7 Nd8 31.Qd3 Kc6 32.Qc4 Kd7 33.Qb4+-) 30.Qe4 (better 30.Qh7 Re8 31.Kd2+-) 30...Nd4 (30...Na5 31.c3 Kb6+-) 31.Bd4 R5d7 (31...Kc6 32.Bb6 R8d7 33.Qb4+-) 32.Qd3 Kc6 33.Qc4 Kd6 34.0-0-0 Bd5 35.Bf6 Ke6 36.Qf4 (better 36.Re1 Kf7 37.Qf4 Be6 38.Bd8 Kg8 39.Re6 b3 40.Qg4 Kf8 41.Re8 Ke8 42.Qg8) 36...Rc8 37.Re1 Kf7 (37...Be4 38.Re4 Kd5 39.Qf5 Kc6 40.Rc4 Kb7 41.Qd7 Rc7 42.Rc7 Kb8 43.Qd8) 38.Ba1 (38.Be7 Kg6 39.Rg1 Bg2 40.Rg2 Kh5 41.Qg5) 38...Kg8 39.Rg1 (39.Rg1 Bg2 40.Rg2 Rg7 41.Rg7 Kh8 42.Qh4) 1-0. FeegLood (2445) - ferrari9182 (2300), lichess.org, 2015.

4.e3 d6 5.cd6+= Bd6 6.g4 (6.Na3 e5+=) 6...Nc6 (better 6...e5!? 7.Bb5 Bd7 8.Bd7 Qd7= (worse 8...Kd7 9.g5 Ne8 10.Qg4 Ke7 11.Nf3+/-)) 7.g5+/- Nd7 (better 7...Qb6 8.Qc1 Nd5+/-) 8.h4 (8.Bg7!? Rg8 9.Bh6+-) 8...Rg8 (8...0-0 9.Nc3=) 9.Nf3 Qb6 (9...e5 10.Nc3+/-) 10.Bc3 (10.Na3 Be7 11.Rb1 Qa5+/-) 10...Qc7 11.Bd3 b6 (better 11...h6!?+/-) 12.Bh7+- Rh8 13.Be4 Nde5?? (better 13...e5+-) 14.Ne5 Be5 15.Be5 Qe5 16.Bc6 Ke7 (16...Bd7 17.Ba8 Qa1 18.Nc3 Qd1 19.Kd1+-) 17.Nc3 Rb8 18.Qf3 (18.Nb5 a6 19.d4 Qf5+-) 18...Ba6 19.Qf4 (19.Rb1!? Rbd8+-) 19...Qf4 20.ef4 Rbc8 21.Bf3 Rc5 22.Be2 (22.h5!? Rf5 23.Rh4 f6 24.gf6 Rf6+-) 22...Bb7 23.Rh3 Rf5 24.f3 (better 24.h5!? Rf4 25.Rb1 Rf5+-) 24...Rf4 25.Kf2 Rhh4 26.Rh4 Rh4 27.Kg3 Rd4 28.f4 (better 28.Bd3!? e5+-) 28...Rd2 29.Rc1 Rd4 30.Kf2 (30.Bd3 f6+-) 30...Rd6? (better 30...Rf4 31.Ke3 Rh4+=) 31.Ke3+- Rd7 32.Nb5 Rc7?? (32...a6 33.Nd4 f6+-) 33.Nc7 Kd6 (33...g6 34.Rd1 Bg2 35.Bb5+-) 34.Na6 (34.Nb5!? Kc5 35.Na7 f6+-) 34...Bc6 35.Rd1 Ke7 36.c4 Bd5 (36...Ba4 37.Rd3 Bc2+-) 37.cd5 e5 38.Nb4 (38.d6 Kd7 39.Nb8 Ke6 40.d7 Kf5 41.Bd3 Kg4 42.Rg1 Kh5 43.d8Q ef4 44.Kf4 f5 45.Rh1 Kg6 46.Qe8) 38...Kd7 39.fe5 f6 40.Bg4 Ke7 41.gf6 gf6 42.Nc6 Ke8 (42...Kf8 43.Rg1 Kg7 44.Bf5 Kf7 45.Be6 Ke8 46.Rg8) 43.Be6 Kf8 (43...f5 44.Rg1 f4 45.Kf4 a6 46.Rg8) 44.Rg1 fe5 45.Rg8 1-0. FeegLood (2840) - ferrari9182 (2490), lichess.org, 2015.

4.Bf6 Qf6= 5.d4 (5.Nc3 Nc6=) 5...Bc5+= 6.e3 Be7 7.Nf3 (7.Qf3 Nc6=) 7...d6 (7...d5 8.Bd3+=) 8.Be2 (8.Nbd2 0-0=) 8...Nc6 9.c3 (9.Nbd2 0-0+=) 9...0-0 10.0-0 Bd7 11.Nbd2 e5 (11...Rfc8 12.Ne4 Qh6 13.c4=) 12.d5 (12.Rb1 Rfb8=) 12...Nb8 13.e4 (13.Ne4 Qh6=) 13...Bg4 (13...b6 14.Rb1=) 14.Ne1 Be2 (14...Bc8 15.Nd3=) 15.Qe2 Nd7 (15...Rc8 16.Rb1=) 16.c4 (16.Rb1 b6+=) 16...Qg6 (16...Rfc8 17.Qf3=) 17.Rb1 f5? (17...Bg5 18.Nd3=) 18.f3 (18.Rb7 Qe8 19.Nd3 fe4 20.Ne4 Rc8+-) 18...f4?? (18...Nb6 19.Nd3=) 19.Qf2?? (19.Rb7!? Qe8 20.Nd3+-) 19...Qh5 (19...Nb6 20.Nd3=) 20.Nd3 (better is 20.Rb7!? Bh4 21.Qe2+/–) 20...Bh4 21.Qe2 g5? 22.Nf2?? b6 23.Ng4 Qg6 24.Nb3 h5 25.Nf2= g4 26.fg4 Kh7? 27.gh5+- Qg5 28.Nh3 Qg7 29.Qf3 Rg8 30.Rf2?? Nf6?? 31.Rbb2?? Bf2= 32.Rf2 Ng4+= 33.Re2 Ne3 34.Nd2 Qh6 35.Re3 fe3-+ 36.Nf1 Raf8 37.Qe3?? Rf1!-+ 38.Kf1 Qe3 39.Ng5 Kh6 40.h4 Rf8 41.Nf3 Rf3 42.gf3 Qf3 43.Kg1 Kh5 44.Kh2 Kg4 45.Kg1 Qg3 46.Kf1 Qf3 47.Kg1= Kg3 (47...Kg3 48.c5 Qg2) 0–1. Onkel_Luis – Quickdraw, ICC, 2003.

4.g4 b6 5.cb6 Qb6 (5...ab6!? 6.Bg2 d5+=) 6.Bf6+/- gf6 7.Bg2 Nc6 8.e3 Bb7 9.Nc3 Rc8 10.Nge2 (10.Rb1 Qc7+/-) 10...Qc7 11.Rb1 a6 12.Nd4 Ba8 13.Nc6 Bc6 14.Bf3 Rg8 15.Rg1 Bd6 (15...d5+=) 16.Kf1 (better 16.Bc6!? Qc6 17.f4+/-) 16...Bh2= 17.Rh1 Bd6 (17...Bf3!? 18.Qf3 Be5=) 18.Rh7+= Be5 19.Ne4 (19.Rb3 a5+=) 19...Ke7 (better 19...Bb5 20.Be2 Be2 21.Ke2 d5=+ (worse 21...Rg4 22.f4+/-)) 20.d4+/- Bd6 21.c4 (better 21.Rb3!?+/-) 21...Be4= 22.Be4 Rg5?? (better 22...Qc4 23.Bd3 Qa2=) 23.Bd3 (23.c5!? Bc5 24.f4 Rgg8 25.dc5 Qc5+-) 23...Rcg8 24.Qf3 (24.c5 Bh2 25.Be2 f5+-) 24...Rg4 (24...Qa5!? 25.e4 Bc7+=) 25.c5 Rg1? (better 25...Bh2 26.Rb6 R4g7+-) 26.Ke2+- Rb1 27.cd6 Qd6 28.Bb1 Qb4 29.Qe4 (29.Qh5!? Qb5 30.Bd3 Qh5 31.Rh5 d5+-) 29...Qb2 (29...Rg1 30.Bc2+-) 30.Qc2 Qb5 31.Qd3 Qc6 (31...Qb2 32.Bc2 Rc8+-) 32.Qc2 Qd6?? (32...Qb5 33.Qd3 Qc6 34.Qa3 d6+-) 33.Qc5 (33.Qc3!? f5+-) 33...Qc5 34.dc5 e5? (34...Rg5 35.a4+-) 35.c6! d5?? (35...dc6 36.Bd3 Combination) 36.c7 (better 36.Bf5 Kd6 37.Rf7 Kc6 38.Rf6 Kc5 39.Ra6+-) 36...d4 (36...Ke6 37.Bc2 e4+-) 37.Bf5 d3 (37...de3 38.fe3 Rg2 39.Kd3+-) 38.Kd3 Rc8 (38...a5 39.e4 Ra8+-) 39.Ke4 (better 39.Bc8 Kd6 40.Rf7 Kc6 41.Ba6 Kc5 42.c8Q Kb6 43.Qb7 Kc5 44.Rc7 Kd6 45.Qc6) 39...Rc7 40.Bg6 Rc5 (40...Kf8+-) 41.Kf5 Rc4 (41...e4 42.Ke4 f5 43.Bf5+-) 42.Rf7 Kd6 (42...Kd8 43.Rf6 Ra4 44.Bf7+-) 43.Rf6 Kd5 Black intends e4 (43...Kd7 44.Ra6 Rc5 45.a4+-) 44.Re6 (better 44.Bf7 Kc5 45.Bc4 Kc4 46.Ra6 e4+-) 44...e4 45.Re5 Kd6 46.Bf7 (46.Re4 Rc2 47.Re6 Kc7 48.Ra6 Rf2 49.Ke6 Rg2+-) 46...Rc5 (46...Rc2 47.Ke4 Rf2 48.Bc4+-) 47.Rc5 Kc5 48.Ke4 Kb6 49.Bb3 Ka5 (49...Kc5 50.Kf5 a5+-) 50.Ba4! Kb6 (50...Ka4 51.f4 Passed pawn) 51.Kd3 (better 51.f4 Kc5 52.Ke5 Kb4+-) 51...a5 (51...Kc5 52.f4 Kd6 53.e4+-) 52.Kc2 Kc5 53.Bb3 Kb6 (53...Kd6 54.f4 Ke7 55.Kb2+-) 54.Kb2 (better 54.e4!? Kc5 55.e5 a4+-) 54...Ka6 55.a3 Kb6 (55...Kb5 56.e4 Kc5 57.f4+-) 56.Ba4 (better 56.e4!? Kc5 57.e5 a4+-) 56...Ka6 57.Kb3 Kb6 58.e4 Ka6 (58...Kc5+-) 59.e5 Kb6 White now must not overlook the idea e6 60.e6 Ka6 (60...Kb7 61.e7 Kb8 62.e8Q Ka7 63.Qd7 Kb6 64.Qc6 Ka7 65.Kc4 Kb8 66.f4 Ka7 67.Qc7 Ka6 68.Bb5) 61.e7 Kb6 62.e8Q Kc5 (62...Kb7 63.Qd7 Kb6 64.Kc4 Ka6 65.Qc6 Ka7 66.Qc7 Ka6 67.Bb5) 63.Qc6 Kd4 64.Qb5 (64.Qb5 Ke4 65.Qg5 Kf3 66.Bc6 Kf2 67.Qf4 Ke2 68.Bb5 Ke1 69.Kc3 a4 70.Qd2; 64.Qf6 Ke4 65.Kc3 Kd5 66.f3 Kc5 67.Qc6) 1-0. FeegLood (2840) - ferrari9182 (2445), Time forfeit, lichess.org, 2015.

4.g4 Ng4!? 5.e3 Nf6=+.

5.cb6 d6? 6.ba7+- Ra7 7.e3 Nc6 8.Nd2 Be7 9.Ngf3 0-0 10.c4 Bb7 11.Be2 Qa8 12.a3 Rb8 13.Qc2 Na5 (13...d5 14.c5+-) 14.0-0 (14.d5 Bc8+-) 14...Ne4 15.Rfb1 f5 (15...Nd2 16.Nd2 (16.Qd2?! Nb3 17.Qd1 Na1 18.Ra1 Bc6=) Bg2 17.e4+-) 16.Bc3 (16.d5 ed5 17.Bd4 Bf6 18.Bf6 gf6+-) 16...Nc3 17.Qc3 Nc6 18.Ne1 Bf6 19.Bf3 Nd8 (19...Kh8 20.Qb2 Rc8 21.Qc2+-) 20.Qc2 (20.Nd3 Bf3 21.Rb8 Qb8 22.Nf3 Qc8+-) 20...Bf3 (20...Ra3 21.Ra3 Qa3 22.d5+-) 21.Nef3 (21.gf3?! Rb1 22.Nb1 Nf7+/-) 21...Rb1 22.Nb1 Nc6 23.c5 d5 24.g3 (24.a4 Rb7+-) 24...Na5 25.Nbd2 Qb8 (25...Nc6 26.Qc3+-) 26.Rb1 Rb7 27.Rb7 Qb7 28.Qa4 Nc6 29.Nb3 Bd8?? (29...g5+-) 30.Ne5 1-0. javirod1983 (2635) - BatGatham (2555), Rated bullet game, lichess.org, 2024. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

5.Nc3 bc5= 6.e3 Nc6 7.Nf3 (7.Rb1 cd4 8.ed4 Rb8+=) 7...Rb8+= 8.Bb5 (8.Rb1!?+=) 8...cd4 9.ed4 Qa5 10.0-0 Rb5 11.Nb5 Qb5 12.Rb1 Ba6 13.Re1 Qd5 14.Ne5 Be7 15.c4 (15.Nc6 Qc6 16.d5 Nd5 17.Bg7-+) 15...Bc4 16.Nc4 Qc4 17.Rc1 (17.a3 0-0-+) 17...Qa2 18.d5 (18.Re2 Qd5-+) 18...Qd5 (18...Qb2?! 19.dc6 Qb8 20.c7-+) 19.Qd5 Nd5 20.Bg7 Rg8 21.Be5 a5 22.g3 a4 23.Rc4 a3 24.Ra4 f5 25.f4 Ne5 26.Re5 Bd6 27.Re1 Ke7 28.Kf2 (28.Kh1 Rb8 29.Ra1 Ne3-+) 28...Rb8 29.Ra5 (29.Kg2 Rb2 30.Kh3 Nf6-+) 29...Rb2 30.Kf3 Bb4 (30...Bb4 31.Rd5 Be1-+) 0–1. hockhin (2395) – pierred (2765), net–chess.com, 2010.

5.Nc3 bc5= 6.Nf3 Bb7 7.e3 Bd6 8.Nb5+= Qa5 9.Bc3 Qb6 10.Rb1 0-0? 11.Nd6+- Qd6? 12.Rb7 Ne4 13.Qd3 Qc6 14.Rb3 a5? 15.Ne5 Qd5 16.Bb2 f6 17.c4 Qd6 18.Qe4 Na6 19.Bd3 fe5 20.Qh7 Kf7 21.Bg6 Kf6 22.de5 Qe5 23.Be5 Ke5 24.Qg7 Kd6 25.Rd3 Kc7 26.Qd7 Kb8 27.Rd6 (27.Rd6 Ra7 28.Rb6 Ka8 29.Be4 Rb7 30.Qb7#) 1–0. pierre – oppohel, internet, 2010.

6.c4 d5 7.cd5 ed5 8.e3 Bd6 9.Nf3.

6.c4 d5 7.cd5 ed5 8.Nf3 Bb4 9.Nbd2 Qe7 (9...0-0 10.e3+=) 10.e3+/- 0-0 11.Bd3 (11.a3 Ba5+/-) 11...Ne4 (11...Ba6 12.Ba6 Na6 13.0-0+=) 12.0-0 (12.a3 Bd2 13.Nd2 Bf5+/-) 12...Nd2 (12...Bg4 13.Nb1+=) 13.Nd2+/- Ba6 14.Ba6 Na6 15.a3 Ba5 16.Nb3 Nc7 17.Qe2 Ne6 18.Rfc1 Nf4? (18...Rfc8 19.Rab1+/-) 19.Qf3 (19.Qb5 Ng6 20.Qd5 Rad8+-) 19...Ng6? (19...Nd3 20.Na5 Ra5 21.Rc2+=) 20.Rc6 (20.Qd5!? Rfd8 21.Qf3 Nh4+-) 20...Rad8 (20...Qb7 21.Rac1 (21.Qd5? Ne7 22.Qd6 Nc6-+; 21.Na5?! ba5 22.Rc2 Rac8+/-) 21...Rac8 A) 22.Qd5? Ne7 23.Qg5 Rc6 (23...Nc6?! 24.d5 f6 25.dc6 Qc6 26.Rc6 fg5 27.Nd4=+) 24.Rc6 Qc6-+ (24...Nc6?! 25.d5 f6 26.dc6 Qc6 27.Nd4=+); B) 22.Na5?! ba5 23.R6c3 Ne7+/-; C) 22.Rc8 Rc8 23.Qd1+/-) 21.Na5 ba5 22.Bc3 (22.Rac1 Rb8 23.Rc7 Qd6+/-) 22...Nh4 (22...Rc8 23.Rc8 (23.Qd5?! Qb7 24.Rc5 Qd5 25.Rd5 Rc3=) 23...Rc8 24.Bd2+/-) 23.Qg3 (23.Qh3 Rb8 24.Be1 Ng6+-) 23...Nf5 (23...Rc8 24.Rc5 Nf5 25.Qf4 Rc5 26.dc5 Qc5 27.Ba5 (27.Qf5?! Qc3 28.Rd1 Qa3=) 27...Qa5 28.Qf5+/-) 24.Qh3 (24.Qf4 Qd7 25.Rc7 Qe6 26.Ba5 Ra8+-) 24...Nh6? (better 24...Qd7 25.Rb6 a4+-) 25.Ba5 Ra8 26.Bb4?? (better 26.Rc5+-) 26...Qb4-/+ 27.Rh6 (27.g4 Qb2 (27...Ra3 28.Ra3 Qa3 29.g5+/-) 28.Rac1 Kh8-/+ (worse 28...Ra3 29.g5+=)) 27...Ra3-+ 28.Rf1 Ra1?? (better 28...gh6 29.Qg3 Kh8 30.Qe5 f6 31.Qd5 Rfa8-+) 29.Ra1+- Qc3 (29...gh6 30.Qg3 Kh8 31.Qe5 Kg8 32.Qd5+-) 30.Rf1 (30.Rha6 Qb3+-) 30...Qc2 (30...gh6 31.Qg3 Kh8 32.Qe5 Kg8 33.Qd5 Qd3+-) 31.Rh4 (31.Rd6 h6+-) 31...h6 (31...Qg6 32.Rh5 f5 33.Rc1+-) 32.Rg4 (32.Qd7 Qc4+-) 32...Kh7 (32...Qc6 33.Qg3 Qf6 34.e4 de4 35.Re4+-) 33.Qg3 Rg8 (33...g6 34.Qd6 Qc8 35.Rf4+-) 34.h4 (34.Qf3!? f5 35.Rf4 Rd8+-) 34...Qf5 (34...Qc6 35.Rf4 f6 36.h5+-) 35.Qf3 (better 35.Rc1+-) 35...Qf4 (35...Qf3 36.gf3 Rd8+-) 36.Qf4 f5 37.Qf5 Kh8 (37...g6 38.Rg6! Rg7 39.Rc6 Kh8 40.Rc8 Rg8 41.Qf6 Kh7 42.Rc7 Rg7 43.Qg7) 38.Rg6 (38.Rc1 g5 39.Rc7 Rg7 40.Qf8 Kh7 41.Qg7) 38...Rf8 (38...Rb8 39.Qe5 Rb7 40.Rh6 Kg8 41.Qe8) 39.Qf8 Kh7 40.Qf7 (40.Rg7) 40...h5 41.Qg7 1-0. ClayPigeons (2100) - gochica (2095), Rated Bullet game, lichess.org, 2020.

6.Nd2 Bb7 7.Nb3 Qc7 8.a3=.

6.Nd2 Bb7 7.Nb3 Be7 8.Nf3 0-0 9.e3 Qc7 10.Qd2 (10.c4 Rc8+=) 10...Rc8 11.Bd3 Nc6 (11...Ne4 12.Qc1=) 12.0-0 (12.a3 Na5=) 12...Nb4 Exerts pressure on the backward pawn 13.Rfc1 (13.Ne5=) 13...Nd3 (better 13...Bf3!? 14.gf3 Na2=+) 14.cd3+= (worse 14.Qd3 Bf3 15.gf3 d5=+) 14...Qb8 15.Ne1 (15.Rc8 Qc8 16.e4 d5+=) 15...Ba3 (15...Rc1 16.Qc1 Ng4 17.f4=) 16.f3 (16.Ba3 Ra3 17.Rc8 Qc8+/-) 16...Bb2 (16...Rc1!? 17.Bc1 Bd6=) 17.Qb2+= Qd6 (17...Rc1 18.Rc1 Qa7 19.Rc2+=) 18.Rc8 Rc8 19.Rc1 Ra8 20.Rc3?? (20.Nd2!?+/-) 20...Qb4 (better 20...Nd5 21.Rc1 Ne3-/+) 21.Rc2?? (21.Nc2 Ra2 22.Nb4 (worse 22.Qa2 Qc3 23.Nba1 Qa5 24.Qa5 ba5=+) 22...Rb2 23.Rc7+/-) 21…Qe1 0-1. ClayPigeons (2135) - xxcandice (2145). Rated Bullet game, lichess.org, 2020.

6.Nd2 Bb7 7.Nb3 Be7 8.Nf3 0-0 9.e3 d5 10.Bd3+=.

6.Nd2 Bb7 7.Nb3 Be7 8.Nf3 0-0 9.e3 d6 10.Bd3 Nbd7 11.0-0 Qc7 12.c4 Rfc8 13.Nbd2 1-0. ClayPigeons (2070) - zolo77 (1960), Rated Blitz game, lichess.org, 2019.

6.e3 d5 7.Nf3 Bb4 8.c3 Bd6 9.Qb3.

6.Nf3 Ba6 7.e3 Bf1 8.Rf1 d5 9.Qd3.

6.Ba3 Ba3 7.Na3 0-0 8.e3 Bb7 9.Rb1 Qa5 10.Qd2 Qa3 11.Rb7 Qa2 12.Nf3 Ne4 13.Qd3 Nd6 14.Rb3 Qa1 15.Qd1 Qa5 16.Qd2 Nc4 17.Bc4 Qa1 18.Qd1 Qd1 19.Kd1 Nc6 20.Rb7 a5 21.Rd7 a4 22.Kd2 a3 23.Ra1 g6 24.Rc7 Nb4 25.Kc3 Nd5 26.Bd5 ed5 27.Ne5 Rfb8 28.Rf7 a2 29.Nc6 Rb1 30.Ra2 Ra2 31.Rd7 Ra3 32.Kd2 Ra6 33.Ne7 Kf8 34.Nd5 Rb2 35.Rd8 Kg7 36.Rd7 Kh6 37.Nf6 Rf6 0–1. Phomopsis (1745) – foxiSVK (1750), lichess.org, 2020.

6.Qc1 a5 7.Nf3 Ba6 8.Nbd2 Nc6 9.c4 Rc8 10.e3 d6 11.Rb1 e5? (11...Qd8 12.Be2+/-) 12.Bc3 (better 12.de5 de5 13.Be5+-) 12...Nb4? (better 12...Qc7+-) 13.a3 (worse 13.de5 de5 14.a3 e4+-) 13...ed4 (13...e4 14.Nh4 (14.Bb4?! ef3 15.Bc3 Qc6 16.gf3 d5+-; 14.ab4?! ef3 15.Qc2 fg2 16.Bg2 ab4+-) 14...g5 15.Nf5+- (15.Bb4?! ab4 16.Rb4 Qc7+-)) 14.Bd4 (14.Bb4?! de3 15.Bc3 ed2 16.Nd2 Qc6+/-; 14.ab4?! dc3 15.Qc3 Nd5+/-; worse 14.Nd4 d5 15.ab4 ab4+-; 14.ed4?! d5 15.Ne5 dc4 16.ab4 Bb4+-) 14...Qc7 15.ab4 a4 (15...ab4 16.Bf6 gf6 17.Qd1+-) 16.b5 (better 16.Bf6 gf6 17.Qc2 Bb7 18.Qa4 Bc6+-) 16...Bb5 (16...Bb7+-) 17.Rb5 d5 (17...Be7 18.Qc2+-) 18.c5 (18.Bf6!? gf6 19.Rd5 a3+-) 18...Be7 19.Bd3 0-0 20.0-0 Ra8 21.Qa3 Rfc8 22.Rfb1 Qd7 23.Rb7 (better 23.R1b4 Qe8+-) 23...Qe6 (23...Qd8 24.Ne5+-) 24.Ng5 (better 24.R1b6 Bc5 25.Bc5 Rc6+-) 24...Qg4 25.Re7 Qg5 26.Nf3 Qg4 (26...Qh6 27.Rbb7 Qh5 28.Bf6 gf6 29.Rb4+-) 27.h3 (27.Rf7 Qh5 28.Rg7 Kg7 29.Rb7 Kg8 30.Bf6 Rc6+-) 27...Qh5 28.Bf6 gf6 29.Qc3 (29.Rb4 f5+-) 29...Rc6 (29...Qh6 30.Qd4 Rd8 31.Rbb7+-) 30.Nd4 Rcc8 31.Nf5 Rc6 (31...Qg5 32.Rb4 h5 33.h4+-) 32.Rbb7 (better 32.Reb7 Rac8+-) 32...a3 (32...Rf8 33.Nd6 d4 34.ed4 Rd6 35.cd6+-) 33.Bb1 (33.Qa3 Rcc8 (33...Ra3?? 34.Re8) 34.Qb2 d4 35.Rf7 Rc5 36.Rh7 Qd1 37.Kh2 Qh1 38.Kh1 Rc7 39.Nh6 Kf8 40.Qb4 Ke8 41.Bg6 Kd8 42.Qf8) 33...Qd1 (33...a2 34.Ba2 Qf5+-) 34.Kh2 Qb1 35.Rb1 a2 36.Ra1 (36.Ra1 Kf8 37.Qb4 Rd6 38.Qg4 d4 39.Qg7; 36.e4 h5 37.Qg3 Kh7 38.Qg7) 1-0. O_Almeida (2700) - SwamiChaturanga (2545), Rated bullet game, lichess.org, 2019.

6.Qc1 Bb4 7.c3 Ba5 8.Nf3 Nc6 9.e3 Rb8 10.Ba3 Ne4 (10...Ba6 11.Bc5 Qb7 12.Nbd2+=) 11.Bd3 d5 (11...f5 12.0-0+/-) 12.Be4 de4 13.Nfd2 Ba6 (13...Qd8!?+/-) 14.Ne4+- Bd3 15.Nbd2 Be4 16.Ne4 Kd7 (16...Qa6 17.Qd2+-) 17.Nd6 (better 17.0-0+-) 17...Rhf8? (better 17...Qa6 18.Qd2 Bc7 19.Nf7 Qa3 20.Nh8 Rh8+-) 18.Nc4 Qc7 (18...Qa6 19.Na5 Qa5 20.Bf8 Rf8 21.0-0+-) 19.Na5 (19.Bd6 Qd8+-) 19...Qa5 20.Bf8 Rf8 21.0-0 Ke7 (21...Rc8 22.Qc2+-) 22.c4 Rc8 23.Rd1 (23.Qb1 Qh5+-) 23...a6 (23...Kf8 24.Qd2+-) 24.Qb2 Nd8 (24...Kf8 25.Qb1 g6 26.d5+-) 25.d5 (25.Qc2 g6+-) 25...ed5 (25...Rc4 26.Qg7 ed5 27.Qe5 Ne6 28.Rab1+-) 26.cd5 f6 (26...Kf8 27.e4+-) 27.d6 Kf7 28.d7 Rc7 29.Rac1 Rd7 (29...Rc1 30.Rc1 Qd5+-) 30.Rd7 (30.Rd7 Kg6 31.Qb3+-) 1-0. javirod1983 (2655) - cyrilou69 (2625), Rated bullet game, lichess.org, 2025. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

6.Qc1 Bb4 7.Nd2 Bd2 8.Kd2 Ne4 9.Ke1 0-0 (9...Nc6!? 10.e3 Rb8=) 10.f3+= Qa5 11.c3 Nf6 12.e4 d6 13.g4 e5 14.g5 Nh5 15.Ne2 Nc6 16.Kf2 (16.d5 Ne7+/-) 16...Ba6 17.d5 Qb6 18.Kg2 (18.Ke1 Na5=) 18...Be2 (18...f5 19.ef5 Rf5-+) 19.Be2= Nf4 20.Kf1 Ne7 21.h4 Rab8 22.Ba3 f6 23.g6 (23.c4 Qd4 24.Qd1 Ne2 25.Ke2 Qc4 26.Qd3 Qc7=) 23...hg6 (23...Neg6 24.Bc4 Rfc8-+) 24.Bc4?? (24.Ke1!?=) 24...Rfc8 (24...f5 25.Ke1 Ng2 26.Ke2 fe4 27.Qg5 (27.fe4?? Qf2 28.Kd1 Ne3 29.Qe3 Qe3-+) 27...Nf4 28.Kd1-+) 25.Bb3 (25.Be2!?-/+) 25...Qa6 (25...f5!? 26.c4 fe4 27.c5-+) 26.Kf2 (26.Kf2 Qe2 27.Kg3 Qg2). is_er_nog_hoop (2495) - MrSuccess (2425), Rated blitz game, lichess.org, 2018.

6.Qc1 Bb4 7.Nd2 Ne4 8.c3 Nd2 9.Qd2?? (better 9.cb4 Ne4 10.Qc8 Ke7 11.Qc4+- (11.Qh8?? Qb4 12.Bc3 Qc3 13.Kd1 Nf2)) 9...Be7 10.e4 0-0 11.Bd3 Bb7 12.Nf3 f5 13.ef5 Bf3 14.gf3 Nc6 (better 14...ef5!? 15.Kd1 Nc6+=) 15.fe6+- Rf3 16.ed7 (16.Be4 Rf6 17.ed7 Rd8+-) 16...Rd8? (16...Rd3 17.Qd3 Qb2+-) 17.Qe2?? (17.Rb1 Nd4 18.Be4 Rd7 19.cd4 Bb4 20.Bf3 Bd2 21.Kd2 Qh6 22.Kc2 Qg6 23.Kd2 Qh6 24.Ke2 Qe6 25.Kd2 Qh6=) 17...Rf6? (better 17...Rd3!? 18.Qd3 Qb2+=) 18.Bc4 (18.Rb1!? Qc7+-) 18...Kh8 19.0-0-0 Na5 (19...Rd7 20.Rd2+/-) 20.Bd3 (20.Qe7?! Nc4 21.Ba3 Na3 22.Qa3 Qc6+/-) 20...Rd7 21.Rhg1 Rb7 22.Rd2 h6 (better 22...Qd8+-) 23.Qe4 Kg8 (23...g6 24.d5 (worse 24.Rg6 Rg6 25.Qg6 Qg6 26.Bg6 Bg5-/+) 24...Kh7 25.c4+-) 24.d5 (better 24.Qh7 Kf7 25.Rg7 Ke8 26.Re2+-) 24...Kf8 25.Qh7 Ke8 26.Rg7 Ba3 (26...Kd8+-) 27.Re2 Kd8 28.Rg8 (28.Ba3 Rf8 29.Rb7 Qb7 30.Qh6 Nb3 31.ab3 Rf6 32.Qf6 Qe7 33.Re7 a6 34.Qf8) 28...Rf8 (28...Bf8 29.Qe4 Qd6+-) 29.Rf8 (better 29.Ba3 Qf6 30.Rf8 Qf8 31.Bf8 Rh7 32.Bh7+-) 29...Bf8 30.Qf5 Nc4 (30...Qc5+-) 31.Qf8 (31.Qf8 Kd7 32.Re7 Kd6 33.Re8 Re7 34.Qe7 Kd5 35.Be4) 1-0. is_er_nog_hoop (2365) - Unicornz (2300), Lichess Titled Arena, lichess.org, 2018.

6.Qc1 Bb7 7.c3 d5 (7...Na6 8.Nd2=) 8.Nd2 Bd6 (8...Qa5 9.Ngf3+=) 9.e3 (9.Ba3 Ba6+=) 9...0-0 (9...Qa5 10.c4+=) 10.Ngf3 (10.Ba3 Ba3 11.Qa3 Rc8+/-) 10...h6 (10...Ba6 11.c4 dc4 12.Rb1+= (worse 12.Bc4 Rc8=+)) 11.Bd3 (11.Ba3 Rc8+/-) 11...Nbd7 (11...Ba6 12.c4 dc4 13.Nc4 (worse 13.Bc4 Rc8=+) 13...Bc4 14.Bc4+=) 12.0-0 (12.c4 Qa6+/-) 12...e5 13.c4 e4 14.c5 Nc5 (14...Bc5!? 15.dc5 Nc5+/-) 15.dc5+/- Bc5? (15...Qc5 16.Qb1 Qb6 17.Bf6 gf6 18.Be4 de4+-) 16.Nb3?? (better 16.Rb1 ef3 17.Nf3+-) 16...Rac8 (16...Be7 17.Bd4 Qd8 18.Be2 ef3 19.Bf3+=) 17.Nc5 Qc5? (better 17...Rc5!? 18.Qd2 ef3+=) 18.Qc5+- Rc5 19.Ba3 Rcc8 20.Bf8 ef3?? (better 20...Kf8 21.Rab1 Rc7+-) 21.Bd6 (21.Rfb1 Kf8 22.Rb7 Rc3+-) 21...fg2 22.Rfc1 (22.Rfb1 Bc6+-) 22...Rd8 (22...Ne4 23.Be5+-) 23.Be5 Ng4 (23...d4 24.Bd4 a5 25.Rc7+-) 24.Bg3 (better 24.Bd4!? a5+-) 24...d4 25.e4 (25.ed4 Rd4 26.Rab1 Rd3 27.Rb7 a5+-) 25...f5 26.Rab1 (better 26.ef5 Rd7+-) 26...Be4 27.Rd1 Bf3 28.Rd2 h5 (28...Nf6 29.Bf5 Kf7 30.Rb8 Rb8 31.Bb8+-) 29.Bf5 Rd5 (29...Kf7 30.Rb3 Bc6 31.Rb8 Rb8 32.Bb8+-) 30.Bd3 (better 30.Be6 Kh7 31.Bd5 Bd5+-) 30...g5 (30...Ne5 31.Be5 Re5 32.Bc4 Kh7 33.Rd4 g5+-) 31.Bc4 1-0. ClayPigeons (2205) - atanedim (2210), Rated Bullet game, lichess.org, 2021.

6.Qc1 Bb7 7.Nd2 a5 8.Ngf3 a4 (8...Bf3 9.Nf3 Nc6 10.Rb1+=) 9.Ba3 (9.Rb1 Bf3 10.ef3 Be7+/-) 9...Ba3 10.Qa3 Nd5? (10...Qc7 11.e3+/-) 11.e3 (11.e4 Ne7+-) 11...Ba6 (11...Qb4 12.Qb4 Nb4 13.Rb1 Bf3 14.Rb4+/- (14.Nf3?! Nc2 15.Kd2 Na3+=)) 12.c4 Nb4 (better 12...Qb4 13.Qb4 Nb4+-) 13.c5 (better 13.Qc3!? Qa5 14.Rb1 N4c6 15.Qa5 Na5+-) 13...Qa5 (13...Qc5! 14.dc5 Nc2 15.Kd1 Na3+=) 14.Rc1+/- Bf1 15.Rf1 Qb5 (15...N8c6 16.Kd1+/-) 16.Ne5 (16.Nc4 0-0+-) 16...f6 (16...0-0 17.Ne4+/-) 17.Nec4+- 0-0 18.Nd6 Qa5 19.Rc4 (19.f4 N8c6+-) 19...N8c6+/- 20.Ke2 f5 21.Rb1 Rab8 22.f3 (22.Kf1 f4 23.e4 f3 24.gf3 Na6 25.Rb8 Rb8+-) 22...h6 23.Nb3?? (better 23.Kd1!?+-) 23...Qa6?? (better 23...ab3 24.Rb3 Qa3 25.Ra3 Ra8-+) 24.Nd2 e5?? (24...Qa5 25.Kd1 Kh7+/-) 25.Ke1?? (better 25.de5!? Nd5 26.Kf2 Ne5 27.Rb8 Rb8 28.Ra4+-) 25...ed4?? (25...Qc4 26.N2c4 Nc2 27.Ke2 Na3 28.Na3 ed4 29.Rb8 Rb8 30.Nab5 de3 31.Ke3-/+) 26.ed4?? (better 26.Rcb4 Rb4 27.Rb4 de3 28.N2c4 Nb4 29.Qb4+-) 26...Rfe8?? (better 26...Qc4! 27.N2c4 Nc2 28.Ke2 Na3 29.Na3 Nd4 30.Kd3 Ne6-/+) 27.Kf2 (better 27.Ne8 Re8 28.Kf2+-) 27...Qa8?? (27...Re6 A) 28.Rbb4?! Rb4 29.Qc3 f4=; B) 28.Rcb4?? Qe2 (worse 28...Rb4 29.N6c4 Rb1 30.d5-+) 29.Kg1 Rb4-+; C) 28.Nf5 Qa5 29.d5 Nd5 30.Rb8 Nb8 31.Qb2+-) 28.Kg1 (better 28.Ne8 Re8 29.Rcb4 Nb4 30.Qb4+- (worse 30.Rb4 Qd8 31.Kg1 Qh4+-)) 28...Nd5? (28...Re2 29.Rb2 (29.Rbb4?! Nb4 30.Rb4 Rd2=) 29...f4 30.Nf1 (30.Rbb4 Nb4 31.Rb4 Rd2=+) 30...Rb2 31.Qb2+-) 29.Rbc1?? (better 29.Rb8 Qb8 30.Ne8 Qe8 31.Kf2+- (31.Ra4?! Qe1 32.Nf1 Nf4=+)) 29...Ncb4?? (better 29...Re3 30.Qa4 Re2+/-) 30.Rb4 (better 30.Ne8 Re8 31.Rb4 Nb4 32.Qb4+-) 30…Nb4 (30...Nb4 31.Ne8 Qd5+-). ClayPigeons (2175) - Trigoi2 (2160), Rated Bullet game, lichess.org, 2019.

6.Qc1 Bb7 7.e3 Bb4 8.c3 Ba5 9.Nf3 0-0 10.Be2 d6 11.0-0 Nbd7 12.Nbd2 d5 (12...Rab8 13.Rb1+/-) 13.Nb3 (13.c4!?+/-) 13...Rfc8+= 14.Nfd2 Ba6 15.Ba6 Qa6 16.Na5 Qa5 17.c4 (17.Qc2 Nb6=) 17...dc4 18.Bc3 (18.Nc4? Qd5-+) 18...Qa6 19.a4 Nd5 20.Qc2 Rc7 21.Rfb1 Rac8 22.Rb5 Qd6 (22...Qc6 23.Ba5 N7b6 24.Ne4+=) 23.Rab1 (23.Ba5 N7b6+=) 23...g6 (23...a6!? 24.Ne4 Qe7=) 24.Ba5+= Attacking the isolated pawn on c4 24...Rc6 25.Ne4 (25.Rb7 Ra6 26.Ne4 Qa3 27.Rd7 Ra5+=) 25...Qe7 (25...Qa3!?+=) 26.Rb7+/- Qe8 27.h3 (27.Ra7!? Ra8 28.Rbb7 Ra7 29.Ra7+/-) 27...f5 28.Nc3 N5f6 (28...a6!?+=) 29.Nb5 Ra6? (better 29...Rb8 30.Na7 Rb7 31.Nc6 Rb1 32.Qb1 Nd5+-) 30.Na7?? (better 30.Nc7 Qd8 31.Na6 Qa5 32.Ra7+-) 30...Ra5= 31.Nc8 Qc8 32.Qc3 (32.R7b4 c3=) 32...Ra8 (32...Ra4!? 33.Qc2 Qc6-/+) 33.a5 (33.R7b4 Ne4 34.Qc2 Nd6=) 33...Kf7 (33...Ne4 34.Qb4 c3=+) 34.a6 (better 34.Qb4+=) 34...Nd5?? (better 34...Ra6 35.Qb2 Qc6-/+) 35.Qa3+/- White plans a7 35...Qc6 36.a7 (better 36.Qc5 Qc5 37.dc5 Ra6 38.Rd7 Kf6 39.Rc1+/-) 36...Ke8?? (better 36...e5+=) 37.Rb8+- Kf7 38.Ra8 (better 38.R1b7 Kf6 39.Rd7 Qd7 40.Ra8+-) 38...Qa8 39.Qa4 (better 39.Rb7! Qb7 40.a8Q Qa8 41.Qa8+-) 39...N7b6+= 40.Qa6 Ke7?? (better 40...Qc6+=) 41.Rb6+- Nb6 42.Qb6 c3 43.Qc5 (43.Qc7 Kf6 44.Qb8 Qa7 45.Qa7 c2+-) 43...Kf7 (43...Kd7 44.d5 c2 45.Qc2 Qa7 46.Qc6 Kd8 47.Qe6 Qa1 48.Kh2 Qh8+-) 44.Qc3 (better 44.Qc7 Kf6 45.Qb8+- (45.Qh7?! Qc8+/-)) 44...Qa7+/- 45.Qc6 Qe7 46.Kh2 Kf6 (46...h5 47.Qc5+/-) 47.g3 (47.d5!? Kf7 48.d6 Qd8+-) 47...Kf7 48.Qc5 (48.Kg2 h6+/-) 48...Qf6 (48...Qc5!? 49.dc5 e5+/-) 49.Qe5 Qe5 50.de5 Ke7 (50...g5 51.f4 Kg6 52.Kg2+-) 51.Kg2 Kd7 52.Kf3 Kc6 53.Ke2 (better 53.e4!? fe4 54.Ke4 Kd7+-) 53...Kd5 54.f4 Ke4 55.Kf2 h6 (55...Kd5 56.Kf3 h6 57.Kf2+-) 56.g4 (56.Ke2!? Kd5+-) 56...g5 57.fg5 (57.gf5 Kf5 58.Kg3+-) 57...hg5+= 58.gf5 Kf5 59.Kf3 Ke5 60.Kg4 Kf6 61.Kh5 Kf5 62.Kh6 e5 63.Kh5?? (better 63.e4 Ke4 64.Kg5=) 63...e4-+ 64.Kh6 g4 65.hg4 Kg4 66.Kg6 Kf3 67.Kf6 Ke3 68.Ke5 Kf3 69.Kf5 e3 70.Kg5 e2 71.Kf5 e1Q 72.Kg5 Qe2 (72...Qe5 73.Kg6 Qe8 74.Kh7 Ke4 75.Kg7 Kf5 76.Kh7 Qd7 77.Kh6 Kf6 78.Kh5 Qh3) 73.Kf5 Qe3 74.Kf6 Qd3 (74...Ke4 75.Ke7 Ke5 76.Kf7 Kf5 77.Kg7 Qe7 78.Kh6 Qd7 79.Kh5 Qh7) 75.Ke5 Qc3 (75...Qc3 76.Kd5 Kf4 77.Kd6 Qc4 78.Kd7 Ke5 79.Ke7 Qc7 80.Ke8 Ke6 81.Kf8 Qf7; 75...Qd8 76.Kf5 Qd6 77.Kg5 Qe6 78.Kh5 Qg8 79.Kh6 Kf4 80.Kh5 Qg5) 0-1. Jaymarc_Gutierrez (2640) - BeStRoMaNo (2645), Rated bullet game, lichess.org, 2024.

6.Qc1 d5 7.e3 Ne4 8.Nf3 Bb4 9.c3 Bd6 10.Be2 Ba6 11.Ba6 Na6 12.Nbd2 Nf6 (12...Rc8!?=) 13.0-0 Rc8 14.c4 0-0 15.c5 Qd8 (15...Qb5 16.Qc3 (worse 16.cd6 Rc1 17.Bc1 Qa4-/+) Bc7 17.Rfc1+/-) 16.Ba3 (16.Qc2 Bb8+/-) 16...Nb8 17.Qd1 (17.cd6?! Rc1 18.Rac1 Qa5=) 17...Bc7 18.Qa4 Nc6 19.h3 Bb8 20.Rab1 e5 (20...Re8 21.Rb5+/-) 21.Rb7 (21.Ne5 Ne5 22.de5 Be5+-) 21...ed4 (21...e4 22.Nh2+/-) 22.ed4 (22.Nd4 Nd4 23.Qd4 Re8+/-) 22...Ne4 23.Re1 Nd2 24.Nd2 Qf6 (24...Re8 25.Re8 Qe8 26.Nf3+/-) 25.Nf3 Rfe8 26.Rbb1 (26.Re8 Re8 27.Bc1+/-) 26...g5 (26...Bc7 27.Re8 Re8 28.Rb7+=) 27.Qc2 (27.Re8!? Re8 28.Ng5+-) 27...h5 (27...Nd4 28.Nd4 Qd4 29.c6+=) 28.Bb2 g4 29.hg4 hg4 30.Ne5 Ne5 (30...Be5 31.de5 Decoy; 30...Ne5 31.de5 Decoy) 31.de5 Be5 32.Be5 (32.Re5 Re5 33.Qd1 Rc5 34.Be5 Qe5 35.Qg4 Kh7=) 32...Re5 33.Re5 Qe5 34.c6 d4 35.Rd1 (35.Qc4 g3 36.fg3 Qe3 37.Kf1 Qg3 38.Qd4 Rc6=) 35...Qd6 (35...g3 36.fg3 Qg3 37.Qe4 (37.Rd4?? Qe1 38.Kh2 Qe5 39.g3 Qd4-+) 37...Qe3 38.Qe3 de3 39.Rc1=) 36.Qc4 Exerts pressure on the isolated pawn (36.Qe4!? Rc6 37.Qg4 Kf8 38.Qd4 Qd4 39.Rd4+/-) 36...Rc6= (worse 36...Qc6 37.Qd4 Qc4 38.Qa7+/-) 37.Qd4 Qd4 38.Rd4 f5 39.Ra4 (39.Rd8 Kf7=) 39...a6 40.Ra5 Rf6 41.Kh2 Kf7 42.Kg3 Kg6 43.Kf4 Rc6 44.a4 (44.Rf5?? Rc4 45.Ke5 Rc5 46.Kf4 Rf5 47.Kg3 Ra5-+) 44...Rc4 45.Kg3 Kg5 46.Ra6 Rc3 47.Kh2 Rc2 48.Kg1 Rb2 (better 48...Rc1 49.Kh2 Rf1=) 49.g3+/- Rb1 50.Kg2 Ra1 51.a5 Ra2 52.Ra8 f4?? (better 52...Kf6+/-) 53.a6 (better 53.gf4 Kf4 54.a6+-) 53...f3= 54.Kh2 Rf2 55.Kg1 Ra2 56.a7 f2?? (better 56...Ra1 57.Kf2 Ra2 58.Ke1 Ra1 59.Kf2 Ra2 60.Kf1 Ra1 61.Kf2=) 57.Kg2+- Kf5 58.Kf1 (58.Rf8 Ke5 59.a8Q Ra8 60.Ra8 f1Q 61.Kf1 Ke6+-) 58...Ra1 59.Kf2 Ke4 (59...Ra2 60.Ke3 Ra3 61.Kd4 Ra4 62.Kd5 Ra5 63.Kc6+-) 60.Re8 Kd5 61.a8Q Kd4 (61...Ra8 62.Ra8 Ke4+-) 62.Qa1 (62.Qe4 Kc5 63.Re5 Kd6 64.Qd5 Kc7 65.Re7 Kb6 66.Rb7 Ka6 67.Qb5) 62...Kd3 (62...Kc5 63.Qe5 Kc6 64.Re6 Kd7 65.Rd6 Kc8 66.Qe7 Kb8 67.Rd8) 63.Qg7 (63.Rd8 Ke4 64.Qd4 Kf5 65.Rd6 Kg5 66.Qe5) 63...Kc4 (63...Kc2 64.Rc8 Kd3 65.Qd7 Ke4 66.Re8) 64.Qg4 (64.Qc7 Kd5 65.Rd8 Ke6 66.Qc6 Ke5 67.Rd5 Ke4 68.Qe6) 64...Kd5 (64...Kb5 65.Qf5 Kc4 66.Rc8 Kd4 67.Qc5 Ke4 68.g4 Kf4 69.Qf5) 65.Qf4 (65.Qe6 Kc5 66.Rc8 Kd4 67.Rc4 Kd3 68.Qd5) 65...Kc5 (65...Kc6 66.Qc4 Kb7 67.Re6 Kb8 68.Rb6 Ka7 69.Qa6) 66.Rd8 (66.Re5 Kc6 67.Qf6 Kd7 68.Re7 Kc8 69.Qf8) 66…Kc6 (66...Kb6 67.Qb4 Kc6 68.Rd6 Kc7 69.Qb6 Kc8 70.Rd8) ½-½. Jaymarc_Gutierrez (2560) - Blitzek (2740), Rated bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

6.Qc1 d5 7.Nf3 Na6 (7...Nc6 8.c4+=) 8.Nbd2 Bd6 (8...Rb8 9.Rb1+=) 9.e3 0-0 (9...Rb8 10.Rb1+=) 10.Be2 (10.c4 Rb8 11.Ba3 Ba3 12.Qa3 Qb4+/-) 10...Bd7 (10...Rb8 11.Ba3+/-) 11.0-0 (11.c4 Qa5+/-) 11...Bb5 12.c4 dc4 (12...Rac8 13.Ne5+/- (13.cb5?! Rc1 14.Rfc1 Nb8=)) 13.Nc4 (13.a4 c3 14.ab5 cd2 15.Nd2 Nb4+/-) 13...Bc4 14.Bc4 (14.Qc4 Qb2 15.Qa6 Rfb8+/-) 14...Rac8 15.Nd2 (15.Qc2 Rc6 16.Qe2 Rfc8+/-) 15...Bb4 (15...Rc6 16.Ba3 Nb4 17.Qd1+=) 16.Bc3+/- Bc3 (16...Ne4 17.Bb4 Qb4 18.Ne4 Rc4 19.a3+/-) 17.Qc3 Nd5 18.Qb3 (better 18.Qa3 Nab4 19.Rab1+-) 18...Qb3? (better 18...Qa5+/-) 19.ab3+- (19.Bb3?! Rc6+/-) 19...Nab4 20.Ra7 Nb6 21.g3 g6 (21...Nc6 22.Ra6 Rb8 23.Rc1+-) 22.Kg2 Rfd8 23.Rc1 e5 (23...Ra8 24.Rb7 Rdb8 25.Rb8 Rb8 26.Ne4+-) 24.Bf7 Kh8 (24...Kf8 25.Rc8 Nc8 26.Rb7 ed4 27.Bc4 (27.Rb4?! de3 28.Nf3 Kf7+-) 27...de3 28.Ne4+- (28.Rb4 ed2 29.Be2 d1Q 30.Bd1 Rd1-/+)) 25.Rc8 Rc8 (25...Nc8 26.Ra8 ed4 27.ed4+-) 26.de5 (26.Rb7 N4d5 27.e4 Nc3+-) 26...Rc2 (26...Nc6 27.Rb7 Ne5 28.Bg6 hg6 29.Rb6+-) 27.Nf3 (better 27.Ne4 N4d5+-) 27...Nd3 28.e6 (28.Ng5 Rf2 29.Kg1 Rf5+-) 28...Nd5 (28...Rf2 29.Kh3 Rf3+-) 29.e7 (29.Nd4!? Rf2 30.Kh3 Kg7 31.Be8 Kf8+-) 29...Ne7?? (better 29...Ne3 30.Kh3 Nf2 31.Kh4 Kg7+/-) 30.Re7 (30.g4 Nc6 31.Rc7 Nd4 32.Rc2 Nc2+-) 30...Rf2 31.Kh3 Rf3 32.Bd5 Rf5 33.e4 Rf2 34.b4! Nb4 35.Rb7 (35.g4 g5+-) 35...Nd3+/- 36.Rb3 Rd2 37.Kg4 Nf2?? (37...h6 38.h4+-) 38.Kf3 (better 38.Kg5 Kg7 39.Rb7 Kf8 40.Rf7 Ke8 41.Rh7+-) 38...Nh3 39.Rb8 Kg7 40.Rb7 Kh6 41.Bg8 (better 41.Ke3 Rh2 42.e5+-) 41...Ng5+= 42.Kg4 Rh2 (better 42...Rd4 43.Re7 Re4 44.Re4 Ne4+=) 43.e5 (better 43.Re7+=) 43...Re2-/+ 44.e6?? (better 44.Rb4 Re5 45.Bb3-/+) 44…Re4 0-1. NguyenMinhTam (2655) - Frogkiller (2675), Rated bullet game, lichess.org, 2025. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

6.Qc1 Be7 7.c3 0-0 8.Nf3 a5 (8...Bb7 9.Nbd2+=) 9.Nbd2 Ba6 10.e3 (10.Rb1 d5+=) 10...d5 11.c4 Rc8 12.c5 Qa7 13.Qc2 Nbd7 (13...Nc6 14.Ba6 Qa6 15.a3+=) 14.Bd3+/- Bd3 15.Qd3 e5 (15...Rab8 16.Rb1+/-) 16.Qc2 (16.Ne5!? Ne5 17.de5+/-) 16...ed4 17.ed4 Ne4 (17...Qa6!? 18.Nf1 Rab8+=) 18.0-0 Nd2 19.Nd2 Bf6 20.Nf3 Rab8 21.Bc1 (21.Rab1 Qc7+/-) 21...a4?? (better 21...Nc5 22.Bf4 Rb4=) 22.Be3 (22.Bf4 Rb4 23.Rab1 Rb1 24.Rb1 Qa6+-) 22...a3 (22...Qa8 23.Rfe1+/-) 23.Rab1 (23.Qf5 Qb7+-) 23...g6 (23...Rb2 24.Rb2 ab2 25.Rb1 Qa2 26.Qb2+-) 24.Rb3+- Qa4 25.Rfb1 Rb3 26.Qb3 (better 26.Rb3 Nb6 27.cb6 Rc2 28.b7 Ra2 29.b8Q Kg7 30.h3 Ra1 31.Rb1 Rb1 32.Qb1-+) 26...Qa5? (26...Rb8 27.Qd3+/- (27.Qa4?? Rb1 28.Bc1 Rc1 29.Qd1 Rd1 30.Ne1 Re1)) 27.Qb7?? (27.Qd5 Qa4+-) 27...Rc7?? (better 27...Rb8 28.Qb8 Nb8 29.Rb8 Kg7+=) 28.Qb4 (28.Qd5!? Qa4+-) 28...Qa6 29.Qb5 Qa7 (29...Qa8 30.Bf4 Rc6 31.Rb4+-) 30.Bg5 (30.Bf4 Rc8 31.c6 Nf8+-) 30...Bg7 (better 30...Bg5 31.Ng5 Qa8+-) 31.Bf4 Rc8 32.Qb7 (32.c6!? Nf8 33.Qb7 Qa8+-) 32...Qb7 33.Rb7 Bd4 (33...Nf8 34.Rb8 Rb8 35.Bb8+-) 34.Nd4 (34.Rd7 Bc5 35.Rd5 Bf8+-) 34...Nc5 35.Rb1 (35.Ra7 Ne6 36.Ne6 fe6+-) 35...Nd3 36.Be3 Nb2 37.g3 (37.Nb5!? Nc4+-) 37...Nc4 38.Nb5 h5. ClayPigeons (2090) - Jahongir776 (2195), Rated Bullet game, lichess.org, 2020.

6.Bc1 Nc6 7.c3 d5 8.e3 a5 (8...Ba6 9.Nf3=) 9.Nf3 Bd6 10.Bd3 (10.Ba3 Ba3 11.Na3 Qb2+/-) 10...0-0 (10...Ba6 11.Na3+=) 11.0-0 (11.Ba3 Qc7+=) 11...Ne4 (11...Ba6 12.Ba3 Qb8 13.Qe2 Bd3 14.Qd3+=) 12.Qc2 (12.c4 Qd8+/-) 12...f5 (12...Ba6 13.Nbd2+=) 13.Nbd2 (13.Ba3 Ba6+/-) 13...Rf6 14.Rb1 (worse 14.Be4 fe4 15.Ne1 Ba6=+) 14...Qc7 15.g3 (worse 15.Ne4 fe4 16.Be4 de4 17.Qe4 Bb7-+) 15...g5 16.Kg2 g4 17.Nh4 (17.Be4 fe4 (worse 17...de4 18.Ne1=) 18.Ne1 Ba6-/+) 17...Rh6 18.f3 (better 18.Ne4!? fe4 19.Bb5+=) 18...Ng3 19.hg3 Bg3 20.Nf5?? (20.fg4 Bh4 21.Rf3 fg4-+) 20...Rh2 21.Kg1 ef5 22.f4 Qe7 23.Bf5 (23.Nf3 Rc2 24.Bc2 gf3-+) 23...Rh1 (23...Qe3 24.Rf2 Qf2) 24.Kg2-+ Rh2 25.Kg1 Qe3 26.Rf2 Qf2 0-1. ClayPigeons (2225) - socoban (2205), Rated Bullet game, lichess.org, 2021.

6.Bc1 Nc6 7.c3 e5 8.e3 d5 9.Nf3 e4 10.Ng1 (10.Nfd2 Qa5+=) 10...Bd6 11.Nd2 0-0 12.Rb1 Qc7 13.Qb3 (13.c4 dc4 14.Bc4 Na5=) 13...Be6 (13...Rb8 14.Qd1=+) 14.h3 (14.Ba3!?=) 14...Rab8 15.Qc2? (better 15.Qa4=+) 15...Nb4!-+ 16.Qa4 (16.Rb4 Bb4 Combination; 16.cb4 Qc2 Pinning (16...Qc2 Deflection; 16...Qc2 Clearance)) 16...Qc3 17.Ne2 (17.Bb2 Nd3 18.Bd3 Qd3 19.a3-+) 17...Nd3 18.Kd1 Nf2 19.Ke1 Nd3 20.Kd1 Nf2 (better 20...Rb1 21.Qc2 Nf2 22.Ke1 Qc2 23.Kf2 Rc1 24.Nc1 Qd2 25.Be2 Nh5-+) 21.Ke1 Qe3 22.Rb8 (22.Nb3 Nd3 23.Kd1 Nc1 24.Nec1 Ng4-+) 22...Rb8 23.Nf3 (23.Nc4 Nd3 24.Kd1 dc4 25.Be3 Nb2 26.Ke1 Na4 27.Bc1-+) 23...Nd3 (better 23...Rb1 24.Qc2 ef3 25.Qb1 Bb4 26.Qb4 Nd3 27.Kd1 fe2 28.Kc2 Nb4 29.Kb2 Qd4 30.Kb3 Qc4 31.Ka3 Qc3 32.Ka4 Bd7 33.Ka5 Qc5) 24.Kd1 Qc1! 25.Nc1 Nb2 26.Kc2 (26.Kd2 Bf4 27.Kc2 Na4-+) 26...Na4 (26...ef3 27.Qa7 Bf5 28.Bd3 fg2 29.Rg1 Nd3 30.Nd3-+) 27.Nb3 ef3 28.gf3 Bf5 (28...Rc8 29.Kd1-+) 29.Kd1 (29.Bd3 Rc8 30.Nc5 Be6-+) 29...Bf4 30.Ba6 Re8 31.Re1 (31.Be2 Nc3 32.Ke1 Re2 33.Kf1 Nh5 34.Rg1 Bh3 35.Rg2 Ng3 36.Kg1 Rg2) 31…Nc3 0-1. Antokpemainkuat (2055) - Arifars17 (2500), CF Edisi Juli I Arena, lichess.org, 2020.

6.Bc1 Nc6 7.e3 e5 8.d5 Ne7 (8...Qa5!? 9.Bd2 Qd5=) 9.c4+= Ng6 10.Nf3 Bb4 11.Nfd2 d6 12.Be2 0-0 13.0-0 e4 (13...Bf5!?+=) 14.a3 Bc5 15.Nc3 Qd8 (15...Be3 16.Rb1 (16.Nde4?! Ne4 17.Ne4 Bc1 18.Rc1 Re8+/-; 16.Nce4?! Ne4 17.Ne4 Bc1 18.Rc1 Re8+/-) 16...Qa5 17.Nb3 (worse 17.Nde4 Ne4 18.Ne4 Bc1 19.Qc1 Bf5+/-; worse 17.Nce4 Ne4 18.Ne4 Bc1 19.Qc1 Bf5+/-) 17...Bf2 18.Kf2 Qc3 19.Bb2 Ng4 20.Bg4 e3 21.Kg1 Qc4 22.Be2+-) 16.Rb1 (16.Nde4!? Ne4 17.Ne4 Bb6+-) 16...Re8 17.Bb2 h5 (17...Rb8 18.Na4 Nd7 19.Qc2+-) 18.Na4 Bg4 (18...h4 19.Nc5 dc5 20.Nb3+-) 19.Nc5 dc5 20.Nb3 (20.Bf6 Be2 21.Bd8 Bd1 22.Rfd1 Rad8+-) 20...Rc8 21.Bf6 Qf6 (21...Be2 22.Qe2 Qf6 23.Qh5+-) 22.Bg4 hg4 23.Qg4 Kh7 (23...Qc3 24.d6 Red8 25.Qe4+-) 24.Na5 Rh8 (24...a6 25.Rfd1 Nf8 26.Nb7+-) 25.Qe4 Rce8 26.Qd3 Kg8 27.Nc6 Ne5 (27...a6 28.Rb6+-) 28.Ne5 (28.Qe4 Rh5+-) 28...Qe5 29.f4 Qh5 30.h3 g5 (30...f5 31.d6+-) 31.Rb7 (better 31.Qf5!? Qe2 32.fg5 Qe3 33.Kh2 Qe7+-) 31...g4 32.d6 gh3 33.Qd5 (33.d7 Rd8 34.gh3 Qh3+-) 33...hg2 (33...Qd5 34.cd5 h2 35.Kh1+-) 34.Qg2 Kf8 35.d7 (35.Ra7 Rg8 36.Qg8 Kg8-+) 35...Rd8 36.Qd5?? (36.Kf2 Qf5 37.Rg1 a6+-) 36...Rg8 (36...Qh2) 37.Kf2+- Qh2 38.Ke1 Rg2 (38...Qg3 39.Kd1 Qe3 40.Qd6 (40.Ra7?! Qb3 41.Ke2 Qc2 42.Kf3 Qg2 43.Ke3 Qf1 44.Qc5 Kg7 45.Qg5 Kh7 46.Qh5 Kg7 47.Qg5 Kh7 48.Qh5 Kg7 49.Qg5=) 40...Kg7 41.Qd2+-) 39.Qd6 (39.Qc5 Kg7 40.Qe5 Kf8 41.Qd6 Kg7 42.Qd4 Kg8+-) 39...Kg7 40.Qd3 (40.Qe5 Kh7 41.Qe7 (41.Qc5 Qg3 42.Kd1 Qg4 43.Kc1 Qe2 44.Rh1 Kg8 45.Rh8 Kh8 46.Qe5 Kh7 47.Qe4 Kh6 48.Qc6 Kg7 49.Qg2 Qg2-+; 41.Ra7?! Rc2 42.Qf5 Kg7 43.Qg5 Kh7 44.Qf5 Kg7 45.Qg5 Kh7 46.Qf5=) 41...Re2 42.Kd1 Rd2 43.Kc1 R8d7 44.Qe4 Kg7 45.Rh1 Rc2 46.Kb1 Rb7 47.Qb7+-) 40...Rd2?? (40...Ra2 41.e4 Kg8-+) 41.Qd2+- Qe2 (41...Qd2 42.Kd2 a6+-) 42.Qe2 (42.Ke2 a6 43.Rg1 Kh7 44.Qe1 Rd7 45.Qh4) 42...Rd7 (42...a6 43.Rg1 Kf8 44.Qh5 f6 45.Qh7 Rd7 46.Rg8) 43.Qd3! (43.Qd3 Rd3 44.Ra7 Re3 45.Kd2+-) 1-0. FeegLood (2760) - littleplotkin (2565), Time forfeit, lichess.org, 2017.

6.Bc1 d5 7.e3 Ba6 8.Ba6 Na6 9.Ne2 Bb4 (9...Rb8!?=) 10.c3+/- Bd6 11.0-0 (11.Qa4 Ke7+/-) 11...0-0 12.Nd2 Rfc8 13.Qb3 (13.Qa4!?+=) 13...Qc6=+ 14.c4 (better 14.a4!?=+) 14...dc4-/+ 15.Qc2 (15.Qc3 Nd5 16.Qc2 c3-/+) 15...c3 (15...Nb4 16.Qd1-+) 16.Nb1 (better 16.Nf3-/+) 16...Ne4?? (better Nb4 17.Qb3 c2-+) 17.f3 Nb4 18.Qb3 (better 18.Qe4 Qe4 19.fe4+/-) 18...c2=+ 19.fe4 cb1Q 20.Qb1 (better 20.Rb1 Qe4 21.Bd2=+) 20...Nc2 21.Bb2 (21.e5 Be5 22.de5 Rab8-+) 21...Na1 (21...Rab8 22.Nc3 Ba3 23.Qc2 Rb2 24.Qd1 Qc3 25.Qf3-+) 22.Ba1 Rab8 23.Qd3 Qc2 24.Qa6? (24.Qc2 Rc2 25.Nc3 Bb4-+) 24...Bf8 (24...Qe4 25.Kh1 (25.Qd6?? Qe3 26.Kh1 Qe2-+) 25...Qe3 26.d5-+) 25.Rc1? (better 25.d5 Bc5 26.Be5 Be3 27.Kh1-+) 25...Qe4 26.Rc8 Rc8 (better 26...Qe3 27.Kf1 Rb1 28.Nc1 Rc1 (28...Ra1?! 29.Qc4-+) 29.Rc1 Qc1 30.Kf2 Qa1 31.Qa7 Qb2 32.Kf3 Qc3 33.Ke2 Qc4 34.Ke3 e5-+) 27.Qc8+/- Qb1? (better 27...Qe3 28.Kf1 Qd2+/-) 28.Kf2?? (better 28.Qc1 Qa2 29.Bb2+-) 28...Qa1= 29.Qa6 Qh1 (29...Bb4!? 30.e4 h5 31.Qc8 Kh7=) 30.Qa7+= Qh2 31.Qb7 Qh4 32.Kf1 Qh6 33.Kf2 g6 (33...Qh4!? 34.g3 Qh2 35.Qg2 Qg2 36.Kg2 Bb4+=) 34.a4+= Qh4 35.Kf1 Qh1 36.Ng1 Qh4 (36...Bd6 37.Qb1+=) 37.Qb3 (37.a5!? Qf6 38.Ke2+-) 37...Qe4+= 38.a5 (38.Nf3!?+=) 38...Bh6 (38...Qf5!? 39.Nf3 Qa5=+) 39.a6 Be3 40.a7 Bd4 41.Qb8 Kg7 42.a8Q Qd3 (42...Qd3 43.Ke1 Bc3 44.Kf2 Bd4 45.Ke1 Bc3 46.Kf2 Bd4 47.Ke1=) 0-1. NguyenMinhTam (2690) - Frogkiller (2755), Rated bullet game, lichess.org, 2024.

6.Bc1 d5 7.e3 Ba6 8.Ne2 Qc7 9.Nd2.

6.Bc3 Bb4 7.Bb4 Qb4 8.Nd2 (8.c3!? Qb2 9.Nd2+-) 8...Qd4= 9.Ngf3 (9.e3 Qc5=) 9...Qd6 (9...Qc3 10.Rb1=) 10.e3 0-0 11.Be2 (11.Nc4 Qb4 12.Qd2 Qb7=) 11...Bb7 12.0-0 Nc6 13.Qb1 (13.Nc4!? Qd1 14.Rfd1= (worse 14.Bd1 Ba6 15.Be2 d5-+)) 13...Rab8=+ 14.Qb3 (14.Qd1!?=+) 14...Ba6-/+ 15.Nc4?? (better 15.Ba6 Rb3 16.ab3-/+) 15...Qc5-+ (15...Rb3?! 16.Nd6 Rb6 17.Ba6 Ra6 18.a3=) 16.Qc3 (16.Qa4 Bb5 17.Qb3 d5-+) 16...Ne4 17.Qd4 (17.Qd3 d5 18.Nfd2 Nd2 19.Qd2 Bc4 20.Bd3-+) 17…Nd4 (17...Nd4 18.ed4 Qc7-+) 0–1. aravind555 (1620) – jess1966 (1610), lichess.org, 2020.

6.Bc3 Bb4 7.Qd2?? a5?? 8.Bb4+= ab4 9.Qc1 (9.c3 Nc6 10.e3 Ne4=) 9...Ne4 (better 9...Qd4 10.c3 Qc5=+) 10.f3?? (10.e3 0-0+=) 10...Nc3 (better 10...Qd4 11.fe4 Qa1-+) 11.Nc3+= bc3 12.e3 Ba6 13.Ba6 Qa6 14.Ne2 Nc6 (14...Qc4 15.Rb1+/-) 15.Nc3 0-0 16.Ne4 (16.Qd2 d5+/-) 16...f5 (16...d5!? 17.Nc5 Qc4+/-) 17.Nc5 Qa5 (17...Qc4 18.Nd7 Rfd8 19.Nc5+/-) 18.c3 d6 19.Ne6 Rfe8 20.Nf4 (20.Qd2 Re6 21.d5 Ree8 22.dc6 Rac8+/-) 20...Nd4+/- 21.0-0 Ne6 (better 21...Nb5+/-) 22.Nd5?? (better 22.Ne2+-) 22...Qd5-+ 23.Rd1 Qe5 24.Re1 (24.c4 Nc5-+) 24...Nc5 (24...Rec8 25.Qd2-+) 25.Qd2 Rad8 (25...Ra3 26.Rad1-+) 26.Kf2 (26.Rad1 Na4 27.c4 Nb2-+) 26...g5 (26...Qh2 27.Qd5 Re6 28.Rh1-+) 27.g3 (27.Rad1 Qh2 28.Qd5 Re6-+) 27...h5 Black plans g4 (27...g4 28.Red1 Rb8 29.Rac1-+) 28.a4 (28.Red1 Na4 29.Rac1 Rc8 30.Qd5 Qd5 31.Rd5 Nc3 32.Rf5 Ne4 33.fe4 Rc1 34.Rg5 Kf7 35.Rh5 Re4 36.Rh7 Ke6-+) 28...g4 29.a5 gf3 30.Kf3 (better 30.Qd4-+) 30...Qe4 31.Kf2 Nd3 32.Kg1 Ne1 33.Qa2 (33.Re1 h4 34.Kf2 hg3 35.hg3 Rd7-+) 33...Qe6 34.Qf2 (34.Qe6 Re6 35.Re1-+) 34...Nd3 (34...Qe3 35.Qe3 Re3 36.a6-+) 35.Qf4 (35.Qe2 Qe3 36.Qe3 Re3 37.a6-+) 35…Nf4 (35...Nf4 36.Rd1 Qe3 37.Kf1 Qf3 38.Kg1 Ne2) 0-1. ClayPigeons (2150) - Surcouf69 (2290), Rated Bullet game, lichess.org, 2021.

6.Bc3 Bb4 7.Qd2?? Nd5?? 8.Bb4+/- Nb4 9.c3 Nd5 10.Na3 (10.e4 Nc7+/-) 10...Qa5 (10...Nf6 11.Rb1 Qc6 12.Rb3+/-) 11.e4 (better 11.Nc4 Qc7 12.e4+/-) 11...Qc3? (better 11...Qa3 12.ed5 ed5+=) 12.ed5?? (better 12.Qc3 Nc3 13.Rc1+-) 12...Qa1-+ (12...Qa3?! 13.de6 de6 14.Bd3=) 13.Qd1 Qa2 (better 13...Qc3 14.Qd2 Qa3 15.de6 de6 16.Bb5 Bd7 17.Bc4-+) 14.Qd2 (14.Qc1 Ba6 15.de6 Qe6 16.Be2-+) 14...Qa1 15.Qd1 Qd1 (better 15...Qa3 16.de6 de6-+) 16.Kd1 0-0 17.de6 de6 18.Bb5 (18.Bd3 Bb7 19.f3 Rd8-+) 18...Rd8 19.Nf3 Bb7 20.Ke2 Nc6 (20...a6 21.Bd3-+) 21.Rd1 Nb4 22.Nc4 (22.Bc4 a5-+) 22...Bf3 (22...Na2 23.Kd3 Be4 24.Ke4 Nc3 25.Kd3 Nd1 26.Nfe5 Nf2 27.Ke2-+) 23.Kf3 Nc2 24.Bc6 (24.Ke4 f5 25.Kf4 Nd4-+) 24...Rac8 25.Na5 (25.d5 Nb4 26.Rb1 ed5 27.Rb4 Rc6-+ (worse 27...dc4 28.Rc4 Rd6 29.Bd5 Rc4 30.Bc4-+)) 25...Nd4 26.Kg3 (26.Ke4 f5 27.Ke3 Nc2 28.Ke2 Rd1 29.Kd1 Nd4-+) 26...Nc6 (better 26...Nf5 27.Kh3 Rd1 28.Be4-+) 27.Nc6 Rd1 28.Ne7 Kf8 29.Nc8 Rd7 30.Na7 (30.Kf4 Ke8 31.h4 Kd8 32.Na7 Ra7-+) 30...Ra7 31.f3 (31.Kf3 Ra3 32.Ke2 Ke7-+) 31...Ra2 (31...e5 32.h4-+) 32.Kh3 Ke7 0-1. ClayPigeons (2180) - CafeRegence (2295), Rated Bullet game, lichess.org, 2020.

6.Bc3 Bb4 7.Qd2?? Ne4 8.Qe3 Bc3 9.Nc3 Qa5-+.

6.Bc3 Qc7 7.Bd2 Bb7 8.Nf3 (8.e3 Nc6+=) 8...Ne4 (8...Bf3 9.ef3 Nc6 10.Be3=) 9.e3+= f5 10.Bd3 Nd2 11.Nbd2 (worse 11.Nfd2 Bg2 12.Rg1 Qh2-/+; 11.Kd2?! Nc6+=) 11...d6 (11...Be7 12.0-0+/-) 12.c4 (12.Rb1 Be7+/-) 12...Nd7 (12...Be7 13.Rb1+/-) 13.0-0 Nf6 (13...Be7 14.Ng5! Nf8 15.Rb1+/-) 14.Rc1 Be7 (14...g6 15.Rb1+-) 15.c5! dc5 16.Nb3 Nd7 17.Bb5 0-0 Black prepares f4 18.Bd7 Qd7 19.Nc5 Bc5 20.Rc5 Bd5 21.a4 (21.Ne5 Qb7+/-) 21...f4 (21...Bf3 22.Qf3 Qa4 23.Rc6+/-) 22.Re1 (better 22.Ne5!? Qb7 23.ef4 Rf4 24.Qc1 Rd4 25.Rc7+-) 22...fe3+= 23.Re3 Bf3 24.Rf3 Rf3 25.gf3 (25.Qf3 Rd8 26.h3 Qd4=) 25...Rf8= 26.Re5 Rf4 Exerts pressure on the isolated pawn 27.Re4 Rf5 28.Kg2 h6 29.h4 Rf6 30.Qe2 Qf7 31.Re5 Qg6 32.Kf1 (32.Kh1 Qe8=) 32...Qb1=+ 33.Qe1 Qb2 (33...Qb3!? 34.Qe2 Kf8=+) 34.Re6+= Rf3?? (better 34...Qd4 35.Re8 Kf7 36.Qe7 Kg6 37.Qe4 Qe4 38.fe4 Ra6=) 35.Re8+- Kf7 36.Qe6 1-0. Bostonbliz (2640) - weijima (2630), Casual bullet game, lichess.org, 2023.

6.Bc3 Ne4 7.Qd3 Nc3 8.Nc3 Bb4 9.Kd1.

6.Bc3 Be7 7.Nf3 (7.e3 Ba6+=) 7...0-0 8.e3 Bb7 9.Bd3 Nc6 (9...Rc8!?=) 10.0-0+= Rac8 11.Bd2 Nb4 12.Nc3 (better 12.Bb4!? Qb4 13.Nbd2+-) 12...Nd3= 13.cd3 Ba6 (13...Bf3 14.gf3 Qa5 15.Ne4=+) 14.Qe2 Bb4 (14...Qa5 15.Rfc1+=) 15.Rab1 (15.Rfb1 Qa5 16.Ne4 Bd2 17.Nf6 gf6 18.Nd2 Rc2 19.Qg4 Qg5+-) 15...Qa5 16.Ne4 Nd5 (16...Bd2 17.Nfd2 (worse 17.Qd2 Qd2 18.Nf6 gf6 19.Nd2 Bd3-/+) 17...Rc2 18.Rfc1 Ra2 19.Nf6 gf6 20.Qg4 Qg5 21.Qg5 fg5 22.Ra1 Rd2 23.Ra6=) 17.Bb4 Nb4 18.Nc5 (18.Ne5 f6 19.Nc4 Qa2+-) 18...d6 (18...Rc5 19.dc5 Bd3 20.Qd2 Bb1 21.Rb1+-) 19.Na6+- Na6 20.Rb2 Rc3 21.Nd2 Rfc8? (21...d5 22.Rfb1+-) 22.Nb3?? (better 22.Nc4 Qd5 23.Qd2 R3c4 24.dc4 Rc4 25.Rc1+-) 22...Qa3 23.h3 (23.d5!?+=) 23...Nb4=+ 24.Rfb1 Nd3 25.Rd2 Nb4 26.Qb5 Nd5 27.Qb7?? (27.e4 a6 28.Qa5 Rb3 29.Qa3 Ra3 30.ed5 ed5=) 27...h6 (better 27...R3c7 28.Qc8 Rc8-+) 28.Qb5 (28.Rbb2 Nb6 29.Re2 R3c6=+) 28...a6 29.Qa5?? (29.Qe2 Nb4=+) 29...Rc1 (better 29...Rb3 30.Qa3 Ra3-+ (30...Rb1 31.Kh2+-)) 30.Rc1= White gets in control 30...Rc1 31.Kh2 Qa5 32.Na5 Ra1 (32...Kf8 33.Rb2=) 33.Nc4 Nb4 (33...Nc3!?=) 34.a3+- (34.Nd6?! Ra2 (worse 34...Na2 35.Rb2+-) 35.Ra2 Na2=) 34...Nc6 35.d5 ed5 (35...Ne7!? 36.de6 d5 37.ef7 Kf7+=) 36.Rd5+- (36.Nd6?! Ra3 37.Rd5 Rc3=) 36...Ra2 (36...Rc1!? 37.Nd6 Rc3+-) 37.Rd6+- Ne7 38.Rd8 Kh7 39.Rd2 (39.Rd7 Rc2 40.Nd6 Nc8 41.Nc8 Rc8 42.Rf7 Rc2+-) 39...Ra1? (better 39...Rd2!? 40.Nd2 Kg6+-) 40.Rd7+- Nf5 (40...Rc1 41.Ne5 (41.Re7?! Rc4 42.Rf7 Ra4+-) 41...f6 42.Re7 fe5 43.Re6+-) 41.Rf7 Rc1 42.Rf5 Rc4 43.Ra5 Rc2 (43...Rc6 44.f4+-) 44.Kg3 (44.Kg3 Rc6 45.e4+-; 44.Ra6 Rf2 45.Kg3 Ra2+-) 1–0. BeepBeepImAJeep (2730) – nopawns (1920), 2015 Winter Marathon, 2015.

7.Nd2 Rb8 8.Rb1 Qc7 (8...Qa5 9.Ngf3=) 9.e3 d5 (9...Qa5 10.c4+=) 10.Ngf3 (10.c4 Bd7+=) 10...Bd6 (10...Nb4 11.c4 Na2 12.Qd1+=) 11.Be2 (11.c4 Bd7+/-) 11...0-0 (11...Nb4 12.c4 Na2 13.Qd1 dc4 14.Qa4 Bd7 15.Qa2+=) 12.0-0 Re8 13.a3 e5 (13...Na5 14.Ne5+=) 14.de5+/- Ne5 15.Rd1 Neg4 16.h3 Ne3?? (better 16...Bh2 17.Kf1 Nf2-/+) 17.fe3+- Re3 18.Nc4?? (better 18.Bd3 Bc5 19.Kh1+-) 18...Re2-/+ 19.Nd6 Qd6 20.Qg5? (20.Nd4 Re7 21.Re1 Ne4-/+) 20...Rb2 (better 20...h6!? 21.Qh4 Qc5 (21...Rc2?! 22.Bf6 Rb1 23.Rb1 Qf6 24.Qf6 gf6 25.Nd4-/+) 22.Bd4 Rb1 23.Bc5 Rd1 24.Kh2 Rc1-+) 21.Rb2-/+ h6 22.Qh4 Qc5 (22...Qa3 23.Rb3 Qc5 24.Nd4 Rc2 25.Rb5-/+) 23.Kh1 (23.Nd4 Qa3 24.Rb8 Re8=) 23...Rc2 (23...Qa3 24.Rb3 Qa2 25.Nd4 Rc2 26.Rb8-/+) 24.Rc2 Qc2 25.Re1 Be6 26.Qg3 (26.Qd4 a6 27.Qb6=+) 26...Ne4 (better 26...Qb2!?=+) 27.Qb8+= Kh7 28.Nd4?? (better 28.Qa7 Nc5 29.Kg1+=) 28...Qf2-+ 29.Rg1?? (better 29.Re4 de4 30.Qa7-+) 29...Qd4 30.Kh2 Qf2 31.Qc7 (31.Rb1 d4 32.Rg1 Bd5-+) 31...Nd2 (31...Bh3 32.a4 Bf5 33.Rc1-+) 32.Rd1 Nf3 (better 32...Nf1!? 33.Rf1 Qf1 34.Qa7 Qf4 35.Kh1-+) 33.Kh1 Bh3! (33...Bh3 34.gh3 Nh4-+) 0-1. ClayPigeons (2130) - Altarius (2235), Rated Bullet game, lichess.org, 2021.

7.Nd2 Nd4 8.Nc4 Qb4 9.c3 Qc4 10.cd4 Ba6 11.Nf3? (better 11.Qc4 Bc4 12.Bc1-/+) 11...Bb4-+ 12.Nd2? (12.Kd1 Ng4 13.Qc4 Nf2 14.Kc2 Bc4 15.Rg1-+) 12...Rc8 (better 12...Ne4! 13.e3 Qd5-+) 13.e3 Qd5 14.Ba6? (14.Qd1 Bf1 15.Kf1 Bd2 16.Qd2 Qb5 17.Qe2 Qe2 18.Ke2 Rc2 19.Kf3 Rb2 20.Rhb1 Rb1 21.Rb1-+) 14...Rc1-+ 15.Rc1 (15.Bc1 Qg2 16.Rf1 Qh2-+) 15...0-0 (better 15...Bd2 16.Kd2 Qa5 17.Kd1 Qa6 18.Rc2-+) 16.f3 (16.Bd3-+) 16...Bd2 (better 16...Qa2 17.Bc3 Bc3 18.Rc3 Qa1 19.Kf2 Qc3 20.Ke2-+) 17.Kd2 Qa5 (17...Qa5 18.Bc3 Qa2 19.Rc2 Qa6-+) 0-1. bjoernsen (2330) - stupid_box (2415), Rated blitz game, lichess.org, 2024.

7.e3 Bb7 8.Nd2 d5 9.Ngf3 Rc8 10.Rb1 Nb4 11.Ba3 Qa5 12.Bb4 Bb4 13.Bd3 Ne4 14.Be4 de4 15.Ne5 Ba6 16.f3 0-0 17.fe4 f5 18.ef5 Rf5 19.h3 Rcf8 20.g4 Rf1 0–1. AstrocruncH – JatFM, ICS, 2000.

7.e3 Rb8 8.Bc3 Ne4 9.Bd3 Nc3 10.Nc3 Bb4 11.Nge2 Qa5 12.Qd2 Ne7 13.e4 d5 (13...Rb7 14.a3 Rc7 15.ab4 Qa1 16.Qd1=) 14.e5 (14.a3 de4 15.Be4 Ba6=) 14...Nc6 (14...Bd7 15.Rb1 Rc8=) 15.a3 (better 15.Rb1!?=) 15...Nd4=+ 16.0-0?? (better 16.Ra2 Bc5 17.Nd1 Qd2 18.Kd2 Ne2 19.Ke2=+) 16...Ne2-+ 17.Qe2 Bc3 18.Rab1 Rb1 19.Rb1 0-0 20.Rb5 (20.Rb3 g6-+) 20...Qa3 21.Rb3 (21.Rb1 Qc5-+) 21...Qa1 22.Qf1 Qf1 23.Bf1 (23.Kf1 Be5 24.Ra3 Bd4-+) 23...Be5 24.g3 Bd7 25.Ra3 Bd4 26.Kg2 (26.c3 Bb6-+) 26...Bb6 (26...Rc8 27.Ra2-+) 27.Bd3 e5 28.f3 (28.c4 e4 29.Bb1 dc4 30.Be4 Rc8-+) 28...f5 Black intends e4 29.Rb3 (29.c4 e4 30.Bc2 Rc8-+) 29...e4 30.Bb5 Bb5 (30...Be6 31.Rb1-+) 31.Rb5 Rc8 32.fe4 (32.c3 Rc3 33.fe4 Rc2 34.Kf1 de4-+) 32...fe4 33.Rd5 Rc2 34.Kh3 (34.Kf1 Rh2 35.g4 e3-+) 34...Bg1 (better 34...e3 35.Re5-+) 35.Re5 (35.Kg4 Rh2 36.Re5 e3-+) 35...Rh2 (35...h5 36.Kh4 e3 37.Kh5-+) 36.Kg4 g6 (better 36...e3 37.Kf3-+) 37.Re4 Kg7 38.Re7 (38.Re1 Bb6-+) 38...Kh6 (better 38...Kf6 39.Rc7 h5 40.Kf3 Bb6-+) 39.Ra7 (39.Re1 Bb6 40.Rb1-+) 39...Ba7 40.Kf4 Bb8 (better 40...g5 41.Kf3 Kh5-+) 41.Kg4 Rg2 (41...Rf2 42.Kh4 g5 43.Kh3 Kg6 44.Kg4 h5 45.Kh3 g4 46.Kh4 Rh2) 42.Kf3-+ Rg3 43.Ke4 Kg5 44.Kd4 h5 45.Kd5 h4 46.Ke6 (46.Kc4 h3 47.Kd4 h2 48.Kd5 h1Q 49.Kc5 Rc3 50.Kb4 Qc6 51.Ka5 Bc7 52.Kb4 Qc4) 46...h3 47.Ke7 (47.Kd7 h2 48.Kc6 h1Q 49.Kc5 Rc3 50.Kb4 Qc6 51.Ka5 Bc7 52.Kb4 Qc4) 47...h2 48.Kd7 (48.Ke8 Re3 49.Kd8 h1Q 50.Kc8 Qh7 51.Kb8 Re8) 48…h1Q (48...h1Q 49.Ke7 Re3 50.Kf8 Kf6 51.Kg8 Re8; 48...Rc3 49.Ke6 h1Q 50.Kd7 Qb7 51.Ke6 Re3) 0-1. ClayPigeons (2160) - kopa851 (2215), Rated Bullet game, lichess.org, 2021.

7.Nf3 Ba6 8.Nbd2 Bb4 9.c3 Be7 10.e3 (10.c4 Rb8 11.Bc3 d5+=) 10...Bf1 11.Nf1 0-0-0? (11...Rc8!?+=) 12.Ng3 (12.c4 Rdf8+-) 12...Qa6 (12...d5 13.Ba3+-) 13.Ne2 (13.c4 Bb4 14.Nd2 Bd2 15.Qd2 Qc4+-) 13...h5 (13...d5 14.a4+=) 14.Qd2 (14.c4 Qa5 15.Nc3 d5+-) 14...h4 15.0-0 h3 16.g3 Ne4 17.Qc2 f5 (17...d5 18.a4+-) 18.a4 (18.c4 g5+-) 18...d5 19.Rab1 (19.Nf4 Kd7+-) 19...g5 20.Ba1 (20.Ne5 Ne5 21.de5 g4+=) 20...g4+= Black is in command 21.Ne5 Ne5 22.de5 Bc5 (22...Kd7 23.Rfd1+=) 23.Qb3 (better 23.Rb5!? Qc6 24.Rfb1+-) 23...Kd7 (23...Nd2 24.Qb8 Kd7 25.Rb7 Ke8 26.Qc7 Nf3 27.Kh1+=) 24.Qb7 (24.Qd1!?=) 24...Qb7=+ 25.Rb7 Kc6 26.Rb5 a6 27.Rb3? (better 27.Rb2=+) 27...Nd2-+ 28.Rfb1 (28.Rb2 Nf1 29.Kf1 Rb8-+) 28...Nb1 29.Rb1 Rb8 The mate threat is Rxb1 30.Rb8 (30.Rd1-+) 30...Rb8 31.Nd4 (31.Kh1 Rb1 32.Ng1 f4 33.c4 fe3 34.Bd4 ef2 35.cd5 ed5 36.Bf2 Bf2 37.e6 Rg1) 31...Bd4 32.cd4 Rb1 0–1. aravind555 (1805) – batboldb (2075), lichess.org, 2020.

7.Nf3 Rb8 8.Bc3 Ne4 9.a3=+.

7.Nf3 Rb8 8.Bc3 Ne4 9.e3?? Nc3-+ 10.Nc3 Bb4 11.Kd2 Qa5 12.Rb1 Bc3 13.Kd1 Qa2 14.Rb8 Nb8 15.Nd2-+.

7.Nf3 Rb8 8.Bc3 Ne4 9.e3?? Nc3-+ 10.Nc3 Bb4 11.Kd2 Qa5 12.Qb2 Ba3 13.Qb3 (13.Qb8 Nb8 14.Rb1 Bb4-+) 13...Rb3 (13...Bb2 14.Qc4 Ba1 15.Bd3-+) 14.ab3 Qb4 15.Ra2 Bc1! 16.Kc1 Qc3 17.Be2 Nb4 18.Rb2 Ba6 (18...Bb7 19.Nd2 Bg2 20.Rg1-+) 19.Ba6 Na6 20.Rd1 Nb4 21.Ne5 (21.Ng1 0-0 22.Ne2 Qc7-+) 21...Ke7 22.Nd3 (22.e4 Rc8 23.Nc4 Rc6-+) 22...Rc8 (better 22...Nd3 23.Rd3 Qe1 24.Rd1 Qf2 25.c4 Qe3 26.Kc2-+) 23.Nb4 Qb4 24.Ra2 (24.h3 d5-+) 24...a5 (24...Qb3 25.Rb2 Qd5 26.Rg1-+) 25.Rd3 (25.Kb1 d5-+) 25...Rc3 (better 25...Qe1 26.Rd1 Qf2 27.e4-+) 26.Rc3 Qc3 27.Ra4 (27.Kd1 Qc6 28.Ra5 Qg2-+) 27...Qe1 28.Kb2 Qf2 29.Ra5 Qe3 30.Ra4 Qf4 (30...Qd2 31.d5 Qd5 32.g3-+) 31.Rc4 (31.g3 Qf2 32.d5 Qh2 33.de6 de6-+) 31...Qh2 32.g3 (32.g4 Qg2-+) 32...Qg3 33.b4 (33.Rc3 Qf4 34.Rd3 g5-+) 33...Qb8 (33...h5 34.b5-+) 34.Kb3 (34.c3 g5 35.Kb3 g4-+) 34...d5 35.c3 (35.Rc6-+) 35...dc4 36.Kc4 Kd6 37.Kd3 Qb5 38.c4 Qb4 39.Ke4 Qc4 40.Ke3 Qd5 41.Kf4 Qf5 42.Kg3 Kd5 43.Kh4 (43.Kg2 Ke4 44.d5 Qf3 45.Kh2 Qf2 46.Kh3 Kf4 47.de6 Qg3) 43...Kd4 (43...Qf3 44.Kg5 h6 45.Kh4 g5) 44.Kg3-+ e5 (44...e5 45.Kh2 Ke3 46.Kg2 Qg6 47.Kf1 f5 48.Ke1 Qg1; 44...Ke3 45.Kh4 Qf3 46.Kg5 h6 47.Kh4 g5) 0-1. Bostonbliz (2700) - weijima (2670), Casual bullet game, lichess.org, 2024. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

7.Nf3 Rb8 8.Bc3 Ne4 9.e3?? Nc3-+ 10.Nc3 Bb4 11.Qd2 Qa5 (11...Qa5 12.Qd1 Bc3 13.Nd2 Nb4-+) 0-1. is_er_nog_hoop (2425) - Benek77 (2490), Rated bullet game, lichess.org, 2017.

5.a3 b6 6.cb6 Qb6 7.Nf3 Qb2 8.Nbd2 Nd4 9.Nd4 Qd4 10.Nb3 Qc3 11.Qd2 Qd2 12.Nd2 Bc5 13.Ne4 Ne4 0–1. Evgenii_777 (1775) – Lazlodamus (1770), lichess.org, 2020.

5.c3 b6 6.cb6 Qb6 7.Qc2 Rb8 8.Bc1 Bd6 (8...d5 9.Nf3=) 9.e3 0-0 10.Nd2 e5 (10...Qc7 11.Bd3+=) 11.Nc4 (11.d5 Ne7 12.Rb1 Qc7 13.Rb8 Qb8+/-) 11...Qc7+= 12.Nd6 Qd6 13.a4 Qe6 (13...Qc7 14.Ba3 Re8 15.Nf3+=) 14.Nf3 ed4 15.cd4 (15.Nd4 Nd4 16.cd4 Bb7+=) 15...d5?? (15...Nb4 16.Qc3 Qf5-/+) 16.Bd3 (16.Ba3 Nb4 17.Bb4 Rb4+/-) 16...Ne4 (16...Nb4 17.Qd1=) 17.0-0 (17.Ba3!? Nb4 18.Bb4 Rb4 19.Rb1 Rb1 20.Qb1+/-) 17...Nb4+= 18.Qe2?? (better 18.Qb3+=) 18...Nd3-/+ 19.Qd3 Ba6 20.Qd1 Bf1 21.Qf1 Rfc8 22.Ba3 (22.Qd1 Rc3-/+) 22...Qc6 (better 22...Rc2!? 23.Rb1 Qc8-+) 23.Ne5-/+ Qc2 24.Bd6?? (better 24.Nd7 Nd2 25.Qe1-/+) 24...Nd6-+ 25.g3 Ne4 26.Nd7 (26.Nd3-+) 26...Rb2 27.Nc5 Nf2 28.Rc1 (28.Qg2 Qc3 29.Qf2 Rf2 30.Kf2 Qc2 31.Kg1 Rb8 32.Rf1 Rb2 33.Rf2 Qf2 34.Kh1 Qh2) 28...Nh3! 29.Qh3 (29.Qh3 Qf2 Mate attack) 29...Qc1 30.Qf1 Qe3 (30...Qd2 31.Qf3 Qh2 32.Kf1 Rb1 33.Qd1 Rd1) 31.Kh1 Re2 (31...Re2 32.Nb3 Rcc2 33.Nd2 Red2 34.Qf7 Kf7 35.h3 Rh2; 31...Qd2 32.Qg1 Qe2 33.Qf2 Qf2 34.h3 Qe1) 0-1. ClayPigeons (2175) - danteneo (2350), Rated Bullet game, lichess.org, 2019.

5.c4 b6 6.Nc3 (6.cb6!? ab6 7.Nf3+=) 6...bc5= 7.d5 ed5 8.cd5 Nb4 (8...Rb8 A) worse is 9.dc6 Rb2 10.Nf3 Qa5+= (10...dc6? 11.Qd8 Kd8 12.0-0-0 Kc7 13.Kb2+-); B) 9.Rb1 Ne5 10.e4=) 9.a3+= Nbd5?? (better is 9...Na6+=) 10.Nd5+- 1–0. DEFFM – GuestXVBC, freechess.org, 2017.

5.e3 Qa5 6.Bc3 Qc7 7.Nd2 Nd5 8.Bb2 Be7 9.Ngf3 b6 10.cb6 ab6 11.Be2 Ba6 12.0-0 Be2 13.Qe2 0-0 14.c4 Ndb4 15.Nb3 Ra2 16.Ra2 Na2 17.c5 Ncb4 18.Qb5 bc5 19.Nc5 Rb8 20.Qa4 Bc5 21.dc5 Qc5 22.Ba3 Qb5 23.Qb5 Rb5 24.Nd4 Rb8 25.Rb1 h6 26.Rb2 Kf8 27.Nc2 Rc8 28.Ra2 Ke8 29.Bb4 d5 30.g3 Rb8 31.Bd6 Rb1 32.Kg2 Kd7 33.Be5 f6 34.Bb2 e5 35.Nb4 Ke6 36.Nd3 Rd1 37.Ra6 Kf5 38.Nc5 d4 39.ed4 ed4 40.Ra4 d3 41.Rd4 d2 42.Bc3 Rc1 43.Bd2 Rc5 44.Rf4 Kg6 45.h4 h5 46.Bb4 Rc2 47.Rf3 Ra2 48.Bf8 Ra7 49.Bc5 Kf7 50.Be3 Kg6 51.Rf4 Ra2 52.Rd4 Re2 53.Rd7 Ra2 54.Bc5 Ra8 55.Kh3 Rg8 56.f4 f5 57.Rd6 Kh7 0–1. Abdullaevich (1660) – ayan116 (1675), lichess.org, 2019.

5.e3 b6 6.cb6 Qb6 7.Bc3 Bb4 8.Bb4 Qb4 9.Nd2 Nd5 10.Rb1 (10.c4 Nf6+-) 10...Qa3 (10...Qa4 11.Rb3+-) 11.Nc4 Qc3 12.Qd2 Qd2 13.Kd2 0-0 (13...Nf6!? 14.Bd3+-) 14.Nf3 Ba6 15.Nd6 Bf1 16.Rhf1 Rab8 (16...Nb6 17.c4+-) 17.a3 (17.c4 Nc7+-) 17...Rb1 18.Rb1 Rb8 (18...Nb6 19.c4+-) 19.Rb8 Nb8 20.Ne5 f5 21.Nb7 (better 21.c4 Nf6 22.f3+-) 21...d6? (better 21...Nf6+-) 22.Nd6 Nb6 (22...Ne7 23.Nef7+-) 23.Nec4 (23.Nb5 N6d7 24.Nd7 Nd7 25.Na7 Nf6+-) 23...N8d7 (23...Kf8 24.Na5+-) 24.Nb6 (24.Na5 Nf6+-) 24...Nb6 (24...ab6 25.c4+-) 25.Kc3 (25.c4 Kf8+-) 25...Kf8 26.Kb4 Ke7 27.Nc4 Nd5 28.Kb5 Nc3 29.Ka6 Nd1 30.f3 Kd7 31.Ka7 Kc6 32.a4 Kd5 33.Nb6 Kc6 34.e4 fe4 35.fe4 Ne3 (35...Nc3 36.d5 Kd6 37.a5 Ne4 38.a6+-) 36.c4 Ng2 37.a5 g5 (37...Kc7 38.d5 Ne1 39.de6+-) 38.c5 (38.Kb8 Ne3+-) 38...h5 (38...g4 39.a6 Kc7 40.d5+-) 39.Na8 (better 39.Kb8 e5 40.a6 ed4 41.a7 Kc5 42.Kc7+-) 39...Ne3 (39...e5 40.d5 Kc5+-) 40.Nb6 (better 40.a6 Nc2 41.d5 ed5 42.ed5 Kc5 43.Kb7+-) 40...Ng4?? (40...Ng2 41.Kb8 e5+-) 41.Na4 (41.Kb8!? e5 42.a6 ed4+-) 41...Ne3 (41...Kc7+-) 42.Kb8 Nd1 (42...Kb5 43.c6! Kc6+-) 1–0. aravind555 (1820) – AlicusLomov (1830), lichess.org, 2020.

5.e3 d5 6.cd6 Qd6 7.Nd2 Qb4 8.Rb1 Na5 (8...Qa5 9.c3+-) 9.Ngf3 Nc4?? (better 9...Qa4+-) 10.Bc4 Ne4 (10...Qa5 11.0-0+-) 11.0-0 Nd2 12.Nd2 (12.Qd2?! Qc4 13.a3 Bd6+-) 12...Bd6 (12...Qa5 13.Ne4+-) 13.Ba1 (13.d5 Qa5 14.de6 fe6+-) 13...Qa5 14.Bb5 Ke7 15.Nc4 Qa4 (15...Qc7 16.Nd6 Qd6+-) 16.Na5 (better 16.Ba4 Bc7 17.Qg4+-) 16...Qa5 17.c4 Qa3 (better 17...a6 18.Ba4 b5 19.cb5 Bd7+-) 18.c5 Bc7 19.Qb3 (better 19.Qe2!? a6 20.Rb3 Qa5+-) 19...Qb3 20.Rb3 a6 (20...Rd8 21.Bd3+-) 21.Be2 b5?? (21...Ra7 22.e4 Re8 23.d5 ed5 24.ed5+-) 22.Bf3 (better 22.cb6 Bd6 23.b7+-) 22...Rb8 23.Rfb1 (23.e4 Rd8+-) 23...Bb7 24.Bb7 Rb7 25.a4 (25.a4 Rhb8 26.e4+-) 1–0. BeepBeepImAJeep (2575) – ratio1212, lichess.org, 2017.

5.e3 d5 6.cd6 Bd6 7.Nf3 0-0 8.Bd3 e5?? (better is 8...Qb6 9.Bc3 Rd8+/–) 9.de5+- (9.Ne5?! Be5 10.de5 Ng4+-) 9...Bb4 10.c3 Ne5 11.Ne5 Bd6 12.Nf3 Bg4 13.Be2 Ne4 (13...Qe7 14.Nbd2+-) 14.Nbd2 Ng5 (14...Nd2 15.Qd2 Qe7 16.Nd4 Be2 17.Qe2+-) 15.Ng5 Be2 16.Qe2 (16.Nf7!? Bd1 17.Nd8 Rad8 18.Rd1 b5+-) 16...Qg5 17.0-0 Rae8 18.Nf3 Qf4 (18...Qh5 19.h3+-) 19.Qc2 (worse is 19.ef4 Re2 20.Rab1 Rb8+-) 19...Qh6 20.c4 1–0. Fournier,Frederic (1670) – guest21, ChessOK.com, 2012.

5.e3 d5 6.Nf3 Be7 7.Bd3 0-0 8.0-0 h6 9.Nbd2 Nh7 (9...b6!?+/–) 10.c4 dc4 11.Nc4 Ng5 12.Ng5 Bg5 13.f4 Bf6 14.Qg4 (better is 14.Qf3!?+-) 14...e5+/– 15.Qg3 ed4 16.ed4 Bd4 17.Bd4 Nd4 18.Rad1 (18.Nd6!?+=) 18...Qd5 19.Ne5 Qc5 20.Bc4?? (better is 20.Kh1+=) 20...Ne2-+ 21.Kh1 Ng3 22.hg3 Kh8 (22...Be6 23.Be6 fe6 24.Rd2-+) 23.Rd5 (23.Nf7 Kh7 24.Ne5 Bf5-+) 23...Qe3 (23...Qe7 24.Re1 Kg8 25.Rdd1-+) 24.Kh2 (24.Nf7 Kh7 25.Kh2 Qe7-+) 24...Be6 25.Rd3 Qe4 (25...Qe2!? 26.Be6 Qf1 27.Bc4-+) 26.Be6 fe6 27.Rfd1 Rf5 28.Ng6 Kh7 29.Nh4 Rh5 30.Kh3 (30.Rd4 Qe2 31.R4d2 Qg4-+) 30...Rf8 (30...g5 31.Rd7 Kh8 32.R1d4 Qf5 33.Kh2 gh4 34.Rd8 Rd8 35.Rd8 Kg7 36.Rd7 Kf8 37.Rd8 Ke7 38.Rd4-+) 31.Rd7 Rh4! 32.Kh4 (32.gh4 Qf5 Double attack; 32.Kh4 Qg2 Combination) 32...Rf5 (32...Qg2 33.R1d5 ed5 34.Kg4 Rf4 35.Kf4 Qe4) 33.g4 (33.R1d2 Rg5 34.Rg7 Rg7 35.Rf2 Qf5 36.Rd2 Qg4) 33...Rf4 34.Kh3 Rg4 35.g3 h5 (35...Rg5 36.Rg7 Kg7 37.Rd7 Kf6 38.Rf7 Kf7 39.Kh2 Qe2 40.Kh1 Qf1 41.Kh2 Rh5) 36.Kh2 Qf3 (36...Qe2 37.Kh3 Qf3 38.Rg7 Rg7 39.Rg1 Rg3 40.Rg3 Qh1) 37.R7d3-+ Qg2 (better is 37...Qf2 38.Kh1 h4-+) 38.Kg2+- h4 (38...Rb4 39.Ra3 g5 40.Rd6 Rb2 41.Kf3 g4 42.Kf4 Rf2 43.Ke5+-) 39.Re1 hg3 40.Rg3 Ra4 41.Re2 b5 42.Kf1 e5 43.Rge3 b4 44.Re5 a5 45.Rb2 Kg6 46.Rb5 Kf6 47.Kf2 (47.Rf2 Kg6+-) 47...g5 (47...Ra3 48.Rc2+-) 48.Ke3 Kg6 49.Ke4 (better is 49.Rb6 Kf5 50.Rf2 Kg4 51.Rg2 Kh5 52.Rb5+-) 49...b3-/+ 50.Kd3? (better is 50.Ke3 ba2 51.Rb6 Kf5 52.Rf2 Ke5 53.Rb5 Ke6 54.Rb6 Ke7 55.Rh2-/+) 50...ba2-+ 51.Ra2 Ra2 52.Kc3 a4 53.Kb4 (53.Rb4-+) 53...Rb2 54.Ka4 Rb5 55.Kb5 g4 56.Kc4 g3 57.Kd5 g2 58.Kd4 g1Q 59.Kd5 Kf5 60.Kc4 Qd1 61.Kc5 Ke4 62.Kc4 (62.Kc6 Qd5 63.Kc7 Qc5 64.Kb7 Kd5 65.Kb8 Kc6 66.Ka8 Qe7 67.Kb8 Qb7) 62...Qd4 (62...Qd4 63.Kb5 Kd5 64.Ka5 Qc5 65.Ka4 Qc2 66.Kb4 Qb2 67.Ka4 Kc4 68.Ka5 Qb5) 0–1. Fournier,Frederic (1880) – polymaarifa1 (1740), Active, 2005.

5.e3 d6 6.cd6 Bd6 7.c4 0-0 8.Nd2 Bc7 9.Ngf3 a6 10.Bd3 Rb8 (10...b6 11.Ne4+/-) 11.0-0 b5 12.cb5 ab5 13.e4 (13.Qb1 Bd7+/-) 13...Bb7 14.e5 Nd5 (14...Nh5 15.Bb5 Ne5 16.de5 Bf3 17.Nf3 (worse 17.gf3 Rb5 18.Bc3 Qh4-/+) 17...Rb5 18.Qe2+/-) 15.Ne4 (15.Qb1!?+-) 15...Nf4+/- 16.Bb1 (16.Bb5 Na7 17.Nc3 Nb5 18.Nb5 Bf3 19.Qf3 Rb5-+) 16...h6 (16...Ne7 17.Bc1 Neg6 18.Bf4 Nf4 19.Qc2+/-) 17.Qd2 (17.Bc1 Ng6+/-) 17...Ng6 18.Rc1 Nce7 19.Nc5?? (19.Ba3 Ba5 20.Bb4 Bb4 21.Qb4 Bd5+/-) 19...Bb6?? (better 19...Bf3 20.gf3 Ne5-/+) 20.Qd3 (20.Nb7 Rb7 21.Be4 Nd5+-) 20...Bc5+/- 21.Rc5 Bd5 22.Nh4 (22.Rb5?! Bf3 23.gf3 Nf5=) 22...Bc4 23.Qe4 Bd5 24.Qc2 (24.Qg4 Nh4 25.Qh4 Qd7+/-) 24...Rc8 (24...f5 25.Ng6 Ng6 26.f3+/-) 25.Ng6 Ng6 26.Rc8 Qc8 27.Qc8 Rc8 28.Bd3 (28.g3 Ne7+/-) 28...Nf4+= 29.Bb5 Ng2 30.Rc1 Rb8 (30...Rc1!? 31.Bc1 Nh4+=) 31.a4+/- Nf4 (31...Nh4 32.Kf1+/-) 32.Ba3 Rb5? (better 32...Ra8!?+-) 33.Rc8 (33.ab5?! Ne2 34.Kf1 Nc1 35.Bc1 Bc4 36.Kg2 Bb5=) 33...Kh7 34.ab5 Ne2 35.Kf1 Nd4 36.b6 Nb5 (36...Nf3 37.Bd6+-) 37.Rc5 (37.Bb2 Bb7 38.Rc5 Kg6+-) 37...Na3 (37...Nd4 38.Bb2 Nc6+-) 38.Rd5! Nc4 (38...ed5 39.b7 Passed pawn) 39.b7 ed5 40.b8Q Ne5 (40...Kg6 41.Qe8 Kf5 42.Qf7 Ke5 43.Qg7 Ke4 44.Ke2+-) 41.Qe5 1-0. Zorbos (2730) - bamboszko (2655), Rated bullet game, lichess.org, 2022. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

5.e3 d6 6.cd6 Bd6 7.c4 0-0 8.Nf3 Bd7 9.Nbd2 b6 10.Bd3 (10.e4 Bf4+/-) 10...Ne7 (10...Nb4 11.Be2+/-) 11.a3 Ng6 12.Qc2 Bc7 13.h4 h6 14.Bg6 fg6 15.Qg6 Qe8 (15...Rc8 16.Rb1+-) 16.Qc2 (16.Qe8!? Rae8 17.Rc1 Bc6+-) 16...Qf7 17.0-0-0 (17.Rc1!? Rac8+-) 17...Bc6 18.Ng5 (better 18.e4+/-) 18...Rad8?? (better 18...Qe8 19.d5 Ba4+=) 19.d5 (better 19.Nf7!? Rf7 20.e4 Rc8+-) 19...ed5 (19...hg5 20.hg5 Nh5+-) 20.Nf7 Rf7 21.Bf6 Rf6 22.cd5 (22.Nf3 Bd6+-) 22...Bd5 23.Ne4 Re6 (23...Rc6 24.Nc3 Bg2+-) 24.Qc7 Rde8 25.Rd5 Re4 26.Rd7 Rg4 27.Rh3 Rg2 28.Rg3 Rg1 (28...Rg3 29.Qg3 Re7 30.Re7 Kh7 31.Qg7) 29.Rg1 Rf8 (29...Re7 30.Rd8 Kh7 31.Qe7 a6 32.Rg7) 30.Rgg7 (30.Rdg7 Kh8 31.Rh7) 30...Kh8 31.Rh7 Kg8 32.Qg3 1-0. FeegLood (2680) - dangling2809 (1815), lichess.org, 2015.

5.e3 d6 6.cd6 Bd6 7.Nf3 0-0 8.Nbd2 Be7 9.Bd3 a6 10.0-0 Nb4 11.Be2 Bd7 (11...b6 12.c4+-) 12.a3 Nc6 13.c4 Rc8 14.c5 b6 15.cb6 (15.Ba6 Rb8 16.Qc2 b5+-) 15...Qb6+- 16.Rb1 Qa7 17.Nc4 Rb8 18.Nfe5 Ne5 19.Ne5 Bb5 20.Bb5 Rb5 21.a4 Rbb8? (21...Rb6 22.Qc2 Bd6 23.Rfc1+-) 22.Bc3 (better 22.Nc6 Qd7 23.Nb8 Rb8 24.d5+-) 22...Rb1 23.Qb1 a5 (23...Rb8 24.Qd3 Qb7 25.a5+-) 24.Qd3 (24.Qb5 Nd5 25.Qa5 Qb7+-) 24...Qb8 (better 24...Rc8!?+-) 25.Nc6 Qc7 26.Ne7 (26.Na5?! Ra8+-) 26...Qe7 27.Ba5 Nd5 (27...Ra8 28.Qb5+-) 28.Qb5 Qe8 (28...Rc8 29.Rb1+-) 29.e4 (29.Qe8 Re8 30.Ra1 f5+-) 29...Qb5 (29...Nf4 30.Re1 Qa8 31.Bc7+-) 30.ab5 Nf6 (30...Nf4 31.Rb1 Ne2 32.Kf1 Nd4 33.Bb6+-) 31.f3 Nd7 (31...Rb8 32.b6+-) 32.b6 Nb8 (32...Ra8 33.Rc1 g5 34.Rc7 Ra5 35.Rd7+-) 33.Rb1 (33.Rc1 f5+-) 33...Na6 (33...f5 34.b7 Rf7 35.ef5 ef5 36.d5+-) 34.b7 Rb8 (34...h6 35.Rc1 Rb8 36.Rc8 Kh7 37.Rb8 Nb8 38.Bc7+-) 35.d5 (35.Rb6 Kf8+-) 35...ed5 36.ed5 g6 (36...Kf8 37.Bd2+-) 37.d6 Kg7 (37...Nc5 38.Rb5 Nd7 39.Bc7+-) 38.Bc7 (38.d7 Nc5 39.d8Q Rd8 40.Bd8 Nb7 41.Rb7 h6+-) 38...Rb7 (38...Rf8 39.Ra1 Nc5 40.b8Q Rb8 41.Bb8+-) 39.Rb7 Nc7 (39...Nc5 40.Ra7 Kf6+-) 40.dc7 h6 (40...Kf6 41.c8Q h6 42.Qd8 Ke5 43.Rb6 Kf4 44.Qd4 Kf5 45.Qf6) 41.c8Q (41.c8Q h5 42.Qc7 Kh6 43.Qf7 h4 44.Qf6 Kh5 45.Rh7) 1–0. BeepBeepImAJeep (2585) – lishcp, lichess.org, 2017.

5.Nf3 Qa5 6.Bc3 Qd8 7.e3 Ne4 8.Bb2 Qa5 9.c3 Nb4 10.Qb3 Nd5 11.Bd3 Nef6 12.0-0 d6 13.Nbd2 dc5 14.e4 Nf4 15.Bc2 cd4 16.cd4 Be7 17.Nc4 Qh5 18.Rfd1 0-0 19.Qe3 Ng6 20.d5 ed5 21.Rd5 Nd5 22.ed5 Bg4 23.Rd1 Bf3 24.Qf3 Qf3 25.gf3 Ne5 26.Ne5 Bf6 27.f4 Be5 28.fe5 Rac8 29.Bb3 a5 30.a4 h6 31.d6 Rc6 32.f4 Rb6 33.Rd3 Rc8 34.Bd4 Rc1 35.Kg2 Rb4 36.Be3 Rb1 37.Bd5 R1b2 38.Kg3 Ra4 39.d7 Raa2 40.d8Q Kh7 41.Be4 g6 42.Qf8 Rh2 43.Qf7 Kh8 44.Rd8 1–0. Orang4Utan (1725) – saidabotaleb (1615), lichess.org, 2018.

5.Nf3 g6 6.e3 Bg7 7.Bd3 (7.Nbd2 0-0+/–) 7...0-0 (7...b6 8.cb6 Qb6 9.Ba3+/–) 8.0-0 Ne8 (8...b6 9.cb6 ab6 10.e4+/–) 9.Nbd2 (9.c4 f5+-) 9...f5 10.a3 (10.c4 b6 11.cb6 ab6+-) 10...f4 (10...b6 11.cb6 ab6 12.c4+/–) 11.Qe2 (11.e4 b6 12.cb6 ab6+-) 11...d6 (11...b6 12.cb6 ab6 13.e4+-) 12.Nc4 (12.cd6!? Nd6 13.e4 b6+-) 12...dc5+/– 13.dc5 Bb2 14.Nb2 e5 (14...fe3 15.Qe3 Nf6 16.Nc4+/–) 15.Bc4 (15.Be4 Qf6+-) 15...Kh8 16.Ng5?? (better is 16.ef4 ef4 17.Nd3+/–) 16...Qg5-+ 17.ef4 (17.Bd5 Nc7 18.Bc6 bc6 19.ef4 ef4-+ (19...Qf4?! 20.Nd3 Qf6 21.Qe5-/+)) 17...Rf4 (better is 17...ef4 18.Qd2 Qc5-+) 18.g3 (18.Qe3 Nd4-+) 18...Bh3 (better is 18...Nd4 19.Qe3 Nf3 20.Qf3 Rf3-+) 19.Rfe1 e4 (better is 19...Nf6 20.c3-+) 20.f3?? (better is 20.Qe3 Rf5 21.Be6 Qe3 22.Re3-+) 20...ef3 (20...Rf3 21.Qe4 Qc5 22.Kh1-+) 21.Qf2 Nf6 22.Nd3 (22.Bd3-+) 22...Ng4 (better is 22...Rc4 23.Qf3 Rc2-+) 23.gf4+- Nf2 (23...Qd8 24.Qf3 Qd4 25.Kh1 Qc4 26.Qh3 Qc2 27.Rad1+-) 24.fg5 Nd3 (24...Ng4 25.Nf2 Nge5 26.Bd5+- (26.Nh3?! Nc4 27.Re4 Nd2+-)) 25.Bd3 (25.cd3 Rd8+-) 25...Rf8 (25...Rd8 26.Rab1 Rd7 27.Kf2+-) 26.Kf2 Nd8 (26...Bc8 27.Re3+-) 27.Re7 Nf7 (27...Bc8 28.Be4+-) 28.Rae1 (28.Rg1 b6 29.Bc4 Nd8+-) 28...Ng5 (28...b6 29.cb6 ab6 30.Re8+- (30.Kf3?! Ng5 31.Ke3 Rf3 32.Kd4 Rf6+-)) 29.Re8 (better is 29.Rb7!? Bc8 30.Ra7 Nh3 31.Kg3 Ng5+-) 29...Kg7 30.R1e7 Rf7 (30...Kf6 31.Rf8 Ke7 32.Rb8+-) 31.Bc4 Re7 32.Re7 Kh6 (32...Kf6 33.Rb7 Ke5 34.Ke3+-) 33.Rb7 Bg2 (33...Ne4 34.Ke3 Nc5 35.Ra7+-) 34.c6 (34.Bd5 a6+-) 34...Ne4 35.Kg1 (better is 35.Ke3 f2 36.Ra7+-) 35...Bh3 36.c7?? (better is 36.Rf7 f2 37.Rf2 Nf2 38.Kf2+-) 36...f2= 37.Kh1 Nd6 38.Bf1? (better is 38.Rb3 Be6 39.Kg2 Bc4 40.Rh3 Kg7 41.Kf2=) 38...Bf1-+ (38...Nb7 39.Bh3 f1Q 40.Bf1+-) 39.Ra7?? (better is 39.c8Q Nc8 40.Rf7-+) 39...Bh3 (39...Bh3 40.c8Q f1Q) 0–1. GuestLGTH – GuestYYDM, freechess.org, 2016.

5.c3 Nc6 6.Nd2 Be7 7.e3 0-0 8.Ngf3 Ne4 (8...b6!?+=) 9.Ne4+/- de4 10.Nd2 f5 11.Bc4 Kh8 12.0-0 Bg5 13.Qe2 Bh6 14.Rae1 Qh4 15.f3 ef3 16.gf3 (16.Nf3!? Qg4 17.e4+-) 16...Rf6 17.Kh1 Rg6 18.Rg1 Rg1 19.Rg1 Bd7 20.Bd3 Ne7 21.Nc4 Nd5 22.Ne5 Be8 23.f4 Bh5 (better 23...Ne3 24.Qe3 Bf4+=) 24.Qd2?? (24.Qe1 Qe1 25.Re1+-) 24...Nf4?? (better 24...Ne3 25.Qe1 Qf4-/+) 25.ef4+- Bf4 26.Qg2 g5? (26...Rg8+-) 27.Nf3 (better 27.Bc1 Be5 28.Bg5+- (28.de5?! Rg8+-)) 27…Bf3 (27...Bf3 28.Qf3 Qh2) 0-1. bjoernsen (2350) - vitco0113 (2355), Rated blitz game, lichess.org, 2022.

5.c4 dc4 6.Nf3 (6.e3!?+/–) 6...b5= 7.Nc3 Bb7 (better is 7...Bd7!? 8.a3 a6=) 8.Nb5+/– Nd5 (8...Qa5!? 9.Nc3 Bf3 10.ef3 Nc6 11.Bc4 Rb8+/–) 9.Qa4+- Bc6 10.Ne5 a6? (better is 10...c3 11.Bc1 Bb5 12.Qb5 Nd7+-) 11.Nc6 Nc6 12.Nd6! Bd6 (12...Qd6 13.cd6) 13.Qc6 Theme: Double Attack (13.cd6?! 0-0 14.e3 Qb6+=) 13...Kf8 14.Qd6 (worse is 14.cd6 Rb8 15.0-0-0 g6+-) 14...Qd6 15.cd6 Ke8 16.e4 Nf4 (16...Rb8 17.Ba3 Nb6 18.Rb1+-) 17.Bc4 Kd7 18.Kf1 (18.g3 Ng6+-) 18...Kd6 19.g3 Ng6 20.Ba3 Kd7 21.Rb1 Rhb8 22.Ke2 Ne7 23.Bc5 Nc6 24.Rhd1 Na5 25.Rb8 Rb8 26.Ba6 Rb2 27.Rd2 Rd2 28.Kd2 f6 (28...Kc7 29.f4+-) 29.d5 ed5 30.ed5 Kc7 31.Bf8 g6 32.Be7 f5 33.a4 Nb3 34.Kc3 Nc1 (34...Na5 35.Kd4 Kb6 36.Bb5+-) 35.Kb2 (better is 35.Bb5 Ne2 36.Kd2 Nd4 37.d6 Kb6+-) 35...Nd3 36.Bd3 (36.Bd3 Kd7 37.Bb4+-) 1–0. pierre – omprakash231, Yahoo, 2005.

5.c4 Be7 6.e3 0-0 7.Nd2 b6 8.cb6 Qb6 (8...ab6 9.cd5 Qd5 10.Qb3+=) 9.Qb3 Qc7 10.Rc1 Qd8 (10...dc4 11.Qc4 Qa5 12.Bc3+/-) 11.Ngf3 Ba6 12.Bd3 Nbd7 13.0-0 Rb8 14.Qc2 h6 15.Ba1 Re8 16.cd5 (better 16.Ne5 dc4 17.Ndc4 Ne5 18.de5+/-) 16...Nd5?? (better 16...Rc8 17.Bc3 Nd5 18.Ba6 Rc3+/-) 17.Ba6+- Nb4 18.Qa4 Nb6 19.Qa5 N6d5 20.Be2 (better 20.Qd8 Red8 21.Bc4+-) 20...Qa5-+ 21.Nb3 (21.Nc4 Qa2 22.Bb2 Qa4-+) 21...Qa2 22.Bc4 (22.Nbd2 Rec8-+) 22...Rec8 (better 22...Nb6!? 23.Nbd2 Nc4 24.Rc4-+) 23.Nc5 Qa5 24.Nb3 Qd8 25.Ne5 (25.Nbd2 a5-+) 25...Rc4! 26.Nc4 (26.Rc4 Nb6 Decoy; 26.Nc4 Nd3 Combination) 26...Bf6 (26...Nd3!? 27.Rb1-+) 27.Nc5 Nd3! 28.Nd3 Qf8 29.Nce5 Be5 30.Ne5 Qd6 31.Nc4 (31.Rc6 Qd8-/+) 31...Qe7 32.Ne5 Qg5 33.Nf3 Qh5 34.Ne5 Nf6 (34...a5 35.Rc5 Ra8 36.Rfc1-/+) 35.h3 (35.Rc7 a6=+) 35...Re8 (better 35...Nd5!?-/+) 36.Rc7= Rf8 37.Nd7 (better 37.Bb2=) 37...Ne4?? (better 37...Nd7 38.Rd7 Ra8-/+) 38.Nf8+- Kf8 39.Rc8 (39.Ra7!? Qe2+-) 39...Ke7+/- 40.Rfc1 Kf6 (better 40...a6+/-) 41.R1c7?? (better 41.d5 Kg6 42.de6+-) 41...Qd1-+ 42.Kh2 Nf2?? (better 42...Qa1 43.Rf8 Nd6-+) 43.Rc2?? (better 43.Rc1 Qd3 44.R8c3=) 43...Qh1 (43...Qa1?! 44.Rf2 Kg6 45.Rc7=+) 44.Kg3 Ne4 (44...Qa1?! 45.Rf2 Kg6 46.Rc7=+) 45.Kf3 (45.Kg4 Qd1 46.Kf4 Qf1 47.Rf2 Qf2 48.Kg4 Qg2 49.Kf4 g5) 45…Ng5 (45...Ng5 46.Kf4 Qf1 47.Kg3 Ne4 48.Kh2 Qa1-+; 45...Qf1 46.Rf2 Qf2 47.Kg4 Qg2 48.Kf4 g5) 0-1. ClayPigeons (2195) - dkp80 (2250), Rated Bullet game, lichess.org, 2021.

5.Nd2 b6 6.cb6 Qb6 7.Qc1 Na6 8.c4 Rb8 9.Bc3.

5.cd6 Bd6 6.Nd2 0-0 7.Ngf3 Nc6 8.e3 Bd7 9.Bd3 h6 (9...Nb4!?+=) 10.a3 Nd5 (10...Rc8 11.0-0+/-) 11.c4 Nf6 12.Bb1 (12.0-0 Rc8+-) 12...Rc8 13.Qc2 b5? (better 13...Re8+/-) 14.d5+- (14.cb5?! Nd4 15.Qd3 Nf3 16.gf3 Qb6+/-) 14...ed5 (14...Re8 15.dc6 Bc6+-) 15.Bf6 Qf6 (15...Bf5 16.Qf5 g6 17.Bd8 gf5+-) 16.Qh7 1-0. FeegLood (2620) - AcoLaki (1935), lichess.org, 2015.

5.cd6 Bd6 6.e3 Qb6 7.Qc1 Bb4 8.Bc3 Nc6 9.Nf3 Qa5 10.Bb4 Qb4 11.Qd2 Qb2 12.Qc3 Qc3 13.Nc3 0-0 14.Be2 a6 15.0-0 Ne7 16.Na4 Ned5 17.Bc4 b5 18.Bd5 Nd5 19.Nb2 Bb7 20.Rfc1 Rac8 21.Ne5 Nc3 22.Kf1 f6 23.Ned3 Be4 24.Nc5 Bf5 25.Na6 Nd5 26.Nc5 Nb4 27.Ncd3 Nc2 28.Rab1 Nb4 29.Rc8 Rc8 30.Rc1 Bd3 31.Nd3 Rc1 32.Nc1 Kf7 33.Ke2 Ke7 34.a3 Nc2 35.Kd3 Na3 36.Nb3 Nc4 37.g3 g5 38.f4 g4 39.Nc5 f5 40.e4 Nd6 41.e5 Nc4 42.Na4 ba4 43.Kc4 a3 44.Kb3 a2 45.Ka2 Kd7 46.Kb3 Kc6 47.Kc4 h6 48.Kb4 Kd5 49.Kc3 h5 50.Kd3 Kc6 51.Kc4 Kd7 52.Kc5 Ke7 53.d5 ed5 54.Kd5 Kd7 55.e6 Ke7 56.Ke5 Kf8 1–0. Phomopsis – Wincatedral, lichess.org, 2019.

5.e3 (--> 1.b4 d5 2.Bb2 e6 3.e3 c5 4.bc5 Nf6 5.d4).

5.Nf3 b6 6.cb6 Qb6 7.Bc1 Nc6 8.e3 Ba6 9.Bd3.

5.c3 dc5= 6.Qa4 (6.e3 Nc6=) 6...Bd7=+ 7.Qb3 cd4 8.Qb7 (8.cd4 Bc6=+) 8...Bc6 (8...Nc6!? 9.Qb3 Rb8-/+) 9.Qb3-/+ dc3 (9...Nbd7 10.Nd2 Rb8-/+) 10.Qc3? (10.Nc3 Nbd7=+) 10...Qb6 (10...Ne4 11.Qb3 Bd5 12.Qa4 Nc6-+) 11.a3?? (11.Qc2 Bb4 12.Nc3 Be4-/+) 11...Bc5 (better 11...Ne4 12.e3 Nc3 13.Bc3 Nd7-+) 12.e3=+ Nbd7 13.Nf3 (13.Nd2 Rc8=) 13...Rb8 14.Bc1 0-0 15.Bd3 (15.Nbd2 Bf3 16.Nf3 Rfc8-/+) 15...Nd5 (better 15...Bf3 16.gf3 Bd6-/+) 16.Bh7?? (better 16.Qc2 f5 17.Nbd2=+) 16...Kh7-+ 17.Qd3 (17.Qc2 Kg8-+) 17...g6 (17...Kg8 18.Nc3-+) 18.Ng5 (18.h4 Qa5 19.Bd2 Qb5 20.Qb5 Rb5-+) 18...Kg7 19.0-0 (19.Nd2-+) 19...Bb5 20.Bb2 f6 (20...N5f6!? 21.Bf6 Nf6 22.Qb3 Bf1 23.Qb6 Rb6 24.Kf1-+) 21.Qe4 Bf1 22.Ne6 Kf7 23.Qd5 (23.Nf8 Kf8 24.Bc3-+) 23...Qe6 24.Qe6 (24.Qd2 Qg4 25.Qd5 Ke7-+) 24...Ke6 25.Kf1 Rb2 26.Nc3 Rfb8 27.Kg1 (27.a4 Rc2 28.Nd1 Bd6-+) 27...Ba3! 28.Kf1 (28.Ra3 Deflection from b1 28...Rb1 A classical mating theme) 28...Bb4 29.Na4 (29.Ne2 Ne5-+) 29...Rc2 30.Rb1 (30.h3 Nc5 31.Kg1 Nd3-+) 30...a5 (better 30...Ra2 31.g3-+) 31.Nb2 Ba3 32.Nd3 Rb1 33.Ne1 Bb4 34.g3 (34.g4 Be1 35.Kg2 Rf2 36.Kg3 Rb3 37.g5 Re3 38.Kg4 Ne5 39.Kh4 Rh2) 34...Be1 35.Kg2 Rf2 36.Kh3 f5 (36...Rb8 37.g4 Rbb2 38.Kg3 Rf1 39.Kh3 Rf3) 37.Kh4 (37.e4 Rb8 38.ef5 Kf6 39.fg6 Rh8 40.Kg4 Ne5) 37...Kf6 38.h3 (38.Kh3 Rbb2 39.e4 Rh2) 38...Rb8 39.g4 (39.e4 Rf4) 39…Rf3 (39...Rfb2) 0–1. sirgeshdb (1760) – kamalo7 (1685), lichess.org, 2019.

5.e3 dc5= 6.Nf3 cd4 7.ed4 Bb4 8.c3 Bd6 9.Nbd2 0-0 10.Bd3 Nc6 11.Nc4 Bc7 12.0-0 h6 13.Ba3 Re8 14.Nfe5 Ne7 15.Qc2 b6 16.f4 Bb7 17.Rae1 Ned5 18.Nf7 Kf7 19.Ne5 Kg8 20.Bg6 Bd6 (20...Be5 21.fe5 Nd7 22.Bf7 Kh8 23.Qg6+=) 21.Bf7 (better 21.Nf7!? Ba3 22.Nd8 Red8 23.Re6+/-) 21...Kf8+= 22.Be8 Ba3 (22...Ne8 23.Qg6 Qe7 24.Qh7+-) 23.Bf7 Rc8?? (better 23...Bd6 24.Be6 Ne7+/-) 24.Be6+- Rc3 (24...Be7 25.Ng6 Ke8 26.Bc8 Qc8 27.Ne7 Ne7 28.Qg6 Kf8 29.Re7 Ke7 30.Qg7 Ke8 31.Qf6 Qc3 32.Qe5 Kd7+-) 25.Ng6 Ke8 26.Bd5 Kd7 27.Qc3 Bd5 28.Ne5 (28.Ne5 Ke8 29.Nc6 Be7 30.Nd8 Kd8 31.Re5+-) 1-0. DEFFM – GuestVRMS, freechess.org, 2021.

6.Nd2 0-0 7.e4+/– Bb4 8.c3 (8.Bd3 e5 9.de5) 8...Ba5 (8...Be7 9.Bd3) 9.Ngf3 (9.Bd3+/–) 9...Nc6 10.Bd3 e5 (10...Nh5 11.0-0+/–) 11.d5+- (worse is 11.Ne5 Ne5 12.de5 Ng4+=) 11...Nh5 (11...Re8 12.0-0+-) 12.Nc4 Nf4 13.Bf1 (13.dc6 Nd3 14.Ke2 Nf4 15.Kf1 Be6 16.Nce5 Qb6=; worse is 13.Na5 Na5 14.0-0 f5+/–) 13...Nd4 (13...Nb8+-) 14.Nfd2 (14.Nd4?! ed4 15.Qd4 Re8+-) 14...Nb5 (14...Nf5 15.g3 Nd5 16.Na5+- (worse is 16.ef5 Bc3 17.Bc3 Nc3+-; worse is 16.ed5 Qd5 17.Qf3 Be6+-)) 15.Qa4 (15.Ne5?! Nc3 16.Qc2 Ncd5 17.ed5 f6+-; 15.Na5?! Qa5 16.Qb3 a6+-) 15...Bc3 16.Qb5 Bd7 (16...Bd2 17.Nd2 a6 18.Qb3+-) 17.Qb3 (17.Qb7?! Rb8 18.Qa7 Bb2+-) 17...Ba5 (17...Bd2 18.Nd2 Re8 19.Nc4+- (19.Qb7?! Rb8 20.Qa7 Rb2+-)) 18.Qb7 (18.Na5 Qa5 19.Be5 Ng6+-) 18...Rb8 (18...Bd2 19.Kd2 f6 20.Ba3+-) 19.Qa7 Bd2 20.Kd2 Qg5 (20...Ng6+-) 21.Qd7 Nd5 22.Ke1 Nf6 (22...Rfd8 23.Qf5 (23.ed5?! Rd7 24.Rd1 Qg6+/–) 23...Qf5 24.ef5+- (24.ed5 Qe4 25.Be2 Rb2 26.Nb2 Qb4 27.Kf1 Qb2-+)) 23.Qd3 (23.Qf5 Qf5 24.ef5 Nd7+-) 23...Rfd8 24.Qe2 (24.Qg3 Qg3 25.hg3 Ne4 26.Be5 Rb7+-) 24...Ne4 (24...Nd7 25.a4+-) 25.Qe4 (25.Be5!? Qg6 26.Bb8 Rb8+-) 25...Rb2 26.f4 ef4 27.Nb2 Qa5 28.Kf2 Qb6 29.Kf3 Qb2 30.Bd3 (30.Rd1 Rc8+-) 30...g6 31.a4 (31.Rhd1 Qa3+-) 31...Kf8 (31...Rd4 32.Qe2 Qb7 33.Be4 Qb3 34.Kf2+-) 32.Rhe1 Kg8 33.a5 h5 (33...Qc3 34.Red1 Kh8 35.a6+-) 34.a6 Qb8 (34...Qb3 35.a7 Qd3 36.Qd3 Rd3 37.Kf4 Rd4 38.Ke3+-) 35.a7 Qc8 36.a8Q Qg4 37.Kf2 Qh4 38.Kf1 (38.Kf1 Kh7 39.Ra7 Qg5 40.Qd8 Qf6 41.Qf6 Kg8 42.Qf7 Kh8 43.Qee8) 1–0. Bonetti,Shane – dltorre (2130), ICC, 2002.

6.Nd2 0-0 7.Ngf3 a5 8.e3 (8.e4 Bf4+/-) 8...a4 9.a3 Nc6 10.c4 Bd7 11.c5 Bc7 12.Bc4 Na5 13.Ba2 (13.Bd3 Rb8+/-) 13...Nb3 (13...b6!?+/-) 14.Nb3 ab3 15.Bb3 Ba5 16.Nd2 (better 16.Kf1!?+-) 16...Ne4+= 17.Bc1 Nc3 (17...Qh4 18.0-0 Bd2 19.Bd2+=) 18.Qc2 (18.Qh5 g6 19.Qh6 e5 20.de5 Ne4+/-) 18...Bb5 (18...e5 19.Qd3+/-) 19.f3 (19.Bc4 Ba4 20.Qd3 b5 21.cb6 Qb6+-) 19...Qh4 20.g3 Qh3 21.Kf2 e5 (21...Rfb8 22.Nc4 Bc4 23.Bc4+-) 22.d5 (22.Bb2 ed4 23.ed4+-) 22...e4? (better 22...Rfc8 23.a4 Bd7+/-) 23.Ne4+- Ne4 24.Qe4?? (24.fe4 Rfe8+-) 24...Rae8?? (better 24...Be1! 25.Ke1 Qg2=+) 25.Qc2 (25.Qh4 Qc8 26.a4 Bd7+-) 25...Kh8 (25...Bf1 26.Rg1+-) 26.Bb2 Qh6 27.e4 b6 28.c6 f5 (28...Rc8 29.Rad1+-) 29.e5 f4 30.g4 (30.Rad1 Rc8+-) 30...Qh4 (30...Rc8 31.Kg2+-) 31.Kg2 Qg5 (31...Rc8 32.Rhd1+-) 32.Rae1! h5 (32...Be1 33.Re1 Combination) 33.Re4 (better 33.h4 Qh6 34.g5+-) 33...hg4 34.h3?? (34.a4 gf3 35.Kf3 Qh5 36.Kf2 Qh4 37.Kg1=) 34...gf3 35.Kf3 Qg3 0-1. ClayPigeons (2205) - Crying__lightning (2200), Rated Bullet game, lichess.org, 2020.

6.Nd2 Qb6 7.Qb1+= Qa5 8.c3 0-0 9.e4.

6.Nd2 Nc6 7.e4 Bb4 8.c3 Be7 9.Bd3.

6.e3 0-0 7.Nd2 b6 8.Bd3 Bb7 9.Ngf3 Nc6 10.0-0 Rc8 11.c4 Nb4 12.Bb1 Ba6 (12...Ng4 13.e4+-) 13.a3 Nc6 14.Bd3 Na5 15.Rc1 Qe7 (15...Bb7 16.Rc3+-) 16.Qe2 (16.Qa4 Rfd8+-) 16...Ba3 17.Ba3 Qa3 18.Ra1 Qe7 19.c5 (19.Rfc1 Rfd8+-) 19...Bd3+= 20.Qd3 Nc6 21.cb6 ab6 22.Rfb1 Nb4 (better 22...Nd5+=) 23.Qb5 (23.Qa3!? Nfd5 24.e4+=) 23...Nbd5 (23...Nc2 24.Ra6 Na3 25.Qb4 Qb4 26.Rb4 Rc1 27.Nf1=+) 24.Ne5 (24.Rc1!?=) 24...Nc3=+ 25.Qb4 Nb1?? (better 25...Ne2 26.Kf1 Ng3 27.hg3 Rc1 28.Rc1 Qb4=) 26.Qe7+- Rc1?? (better 26...Nd2 27.Qb4 Rc2 28.Qb6 Nde4+-) 27.Nf1 Rfc8 (27...Ne4 28.Nd3 Rd1+-) 28.Qf7 Kh8 29.Nd3 (29.Ra7 Nh5 30.Re7 Rf1 31.Kf1 h6 32.Qh5 Rc1 33.Ke2 Nc3 34.Kf3 b5 35.Re8 Kh7 36.Qg6) 29...Rd1 (29...R1c7 30.Qe6 Nc3+-) 30.Ra7 Nh5 31.Qh5 Nd2 Threatening mate... how? 32.Qd1 Ne4 33.Qg4 Nc3 (33...Rg8 34.Ne5 g6 35.Nf7 Kg7 36.Ng5 Kf8 37.Qe6 Ng5 38.Qe7) 34.Qg7 1–0. BeepBeepImAJeep (2660) – chesshunter999 (2080), lichess.org, 2017.

6.e3 b6 7.Nf3 Bb7 8.Nbd2 Nbd7 9.c4 h6 10.Be2 g5 11.a4 (11.h3!?+/-) 11...g4+= 12.Nh4 (better 12.Ne5!? Bg2 13.Rg1+=) 12...Ne4-/+ 13.Ne4 Be4 14.Nf3 gf3 15.Bf3 Bf3 16.Qf3 Bb4 17.Ke2 Rc8 18.Rac1 Qf6 (18...Rg8!? 19.Rhd1-/+) 19.Qb7 Ke7 20.Rc2 (20.Qa7 Ra8 21.Qb7 Ra4-/+) 20...a5 (20...Qf5 21.Rhc1 Rhg8 22.h3-+) 21.d5 (better 21.Rhc1!? Qg6 22.Qf3-/+) 21...Qg6-+ 22.Rhc1 Rhd8 23.Kf1 (23.de6 fe6 24.h3 Rb8-+) 23...Rg8 (better 23...Qd3 24.Kg1 Bd2 25.Rd2 Qd2 26.Ba3 Ke8 27.de6 Rc4 28.ed7 Qd7 29.Qd7 Rd7-+) 24.de6-/+ Qe6 25.Rd1 Qc6 26.Bf6 Kf6 (26...Ke6 27.Qc6 Rc6 28.Bd4-+) 27.Rd7 Qb7 28.Rb7 Rc6 29.g3 Rgc8 30.Ke2 (30.Kg2 Kg7-+) 30...Rc4 31.Rb6 Kg7 32.Rc4 Rc4 33.h4 (33.h3 Rc2 34.Kf1 Ra2-+) 33...Rc3 (33...Rc2 34.Kf1-+) 34.g4 Ra3 35.f4 White prepares g5 35...Bc5 (35...Ra4!? 36.Rb5-+) 36.Rb5 Bb4 37.g5?? (37.Rb6 Ra4 38.Rc6-+) 37...hg5 38.hg5 (38.fg5 Ra2 39.Kf3 Rh2-+) 38...Ra4 39.f5 Ra2 40.Kf3 Be7 (40...Ra3 41.Rd5-+) 41.Kg4 (better 41.f6 Bf6! 42.gf6 Kf6 43.Rb6 Kg7 44.e4-/+) 41...Kf8?? (41...Rg2 42.Kf3 Rg5 43.Ra5-+) 42.f6?? (42.Rb8 Kg7 43.Rb5 Rg2 44.Kf3 Rg5 45.Ra5-+) 42...Bd6 43.Rb6 Rg2 44.Kf3? (better 44.Kf5 Bc7 45.Rc6-+) 44...Rg3 45.Ke4 Bc7 (better 45...Re3! 46.Kf5 Re5 47.Kg4-+) 46.Rb7 Rg5?? (better 46...Rg4 47.Kf3 Rc4-+) 47.Rc7+/- Kg8 48.Kf4 Rg6 (48...Rg6 49.Kf5 Rh6+/-). jhonores (2200) - LEGNA04 (2150), Rated Blitz game, lichess.org, 2020.

6.e3 Nc6 7.c4 b6 8.Ba3 e5 9.Bd6.

6.e3 Nc6 7.Nd2 0-0 8.Ngf3 Re8 9.Be2 e5 10.de5 Ne5 11.Ne5 Be5 12.Be5 Re5 13.0-0 Qc7 14.Nf3 Rh5 15.h3 Bh3 (better 15...Be6!?+=) 16.gh3+- Rh3 17.Qd4 (better 17.Kg2 Rh5 18.Rh1+-) 17...h5?? (17...Qc2 18.Qd3 Qc5 19.Kg2+-) 18.Qf4 (better 18.Kg2 Rd8 19.Qa4 Rd2+-) 18...Qd7?? (better 18...Qf4 19.ef4 Nd5+-) 19.Ng5 Re8 (19...Rf8 20.Rab1+- (worse 20.Nh3 Qh3 21.Rfd1 Qc8+-)) 20.Nh3 (better 20.Rad1 Qc8+-) 20...Qh3 21.Qg3 (21.Rfd1 b6+-) 21...Qf5 (21...Qg3 22.fg3 Re3 23.Kf2+-) 22.Bd3 Qe6 (22...Ne4 23.Qg2 Re6 24.Kh1+-) 23.Rab1 Ng4 (23...b6 24.Qh4+-) 24.Rb5 (24.Rb7 a5+-) 24...f5 (24...Ne5 25.Rb7 Qc6 26.Ra7 Nf3 27.Kh1 Nd2 28.Qg2 Qg2 29.Kg2 Nf1 30.Kf1+-) 25.Rf5 (better 25.Rb7 a6+-) 25...g6 (25...Nf6+-) 26.Rg5 Ne5 (26...Kf8 27.Qf4 Ke7 28.Rg6+-) 27.Rg6 (27.Bg6 Ng6 28.Rg6 Kh7 29.Re6 Re6 30.Qc7 Kh6 31.Qf4 Kg6 32.Kh2 Ra6 33.Rg1 Kh7 34.Qc7 Kh6 35.Qg7) 27...Ng6 28.Qg6 (better 28.Bg6 h4 29.Qg2 Kf8 30.Qf3 Kg8 31.Be8 Qe8+-) 28...Qg6 29.Bg6 Re5 30.Bd3 Rg5 (30...Kf8 31.e4+-) 31.Kh2 (31.Kh2 Kf8 32.Rb1+-) 1–0. BeepBeepImAJeep (2540) – urielchessCM (1985), lichess.org, 2019.

6.e3 Nbd7 7.Nf3 0-0 8.Bd3 Qb6 9.Qc1 Qc6 10.0-0 b6 11.Nbd2 Bb7 12.a4 Qc7 13.Ba3 Ba3 14.Qa3 Nd5 15.c4 Ne7?? (better is 15...N5f6+/–) 16.Qe7+- Rfe8 17.Qh4 (17.Qh4 h6 18.a5+-) 1–0. Kukel,Imre (1985) – Voros,Csaba, SVK–chT2B, 2008.

6.Nf3 0-0 7.c4 b6 8.e3 Nc6 9.Be2.

6.Nf3 0-0 7.Nbd2 a6 8.Nb3 (8.e4!? Bb4 9.a3+/-) 8...b5 9.e3 Bb7 10.c4 Qc7 (10...Bb4!? 11.Nbd2 Ne4+=) 11.cb5+/- ab5 12.Bb5 Bc6 (12...Bb4 13.Kf1+/-) 13.Bc6+- Nc6 14.0-0 Qd7 (14...Rfb8 15.Qe2+-) 15.Qe2 Rfb8 16.Rfc1 h6 (better 16...Qb7+-) 17.Nbd2?? (17.e4 Nh5+-) 17...Nb4?? (better 17...Rb2 18.Qc4 Ne7-+) 18.Nc4 (18.a3 Nbd5 19.Nc4 Rb7+-) 18...Be7 (better 18...Na2!? 19.Rcb1 Qb5+/-) 19.a3 Nbd5 (19...Nc6 20.Nfe5 Ne5 21.Ne5+-) 20.Rcb1 (20.e4 Nb6 21.Nce5 Qe8+-) 20...Rb7 (20...Qb5 21.Nfd2+-) 21.Nfe5 Qe8 (better 21...Qa4+-) 22.Bc1?? (22.e4 Nb6 23.Bc1 Rab8+-) 22...Rab8?? (better 22...Nc3 23.Qd3 Rb1 24.Rb1 Nb1 25.Qb1 Qa4=) 23.Rb7+- Rb7 24.a4 Nc3 25.Qc2 Nce4 26.a5 Ng5 (26...Nd6 27.Nd6 Bd6 28.Ba3+-) 27.a6 Rb8 (27...Rc7 28.f4 Ngh7 29.Nf7 Nf8+-) 28.a7 Ra8 (28...Rc8 29.Qa4 Qf8 30.a8Q Ra8 31.Qa8 Qa8 32.Ra8 Kh7 33.f3+-) 29.Nb6 Bd6 (29...Ra7 30.Ra7 Bf8 31.Nc6+-) 30.Na8 Qa8 (30...Nd5 31.Nc4 Qc6 32.Qb3+-) 31.Nc4 (better 31.Qc6 Qc6 32.Nc6+-) 31...Bc7 32.Qb3 (32.Ra6 Nd5 33.Qa4 Bd8+-) 32...Nd7 (32...Nd5+-) 33.Qb5 Nf8 (33...Nf6 34.Ra6 Ng4 35.Qc6 Bh2 36.Kf1 Qc6 37.Rc6+-) 34.Nb6 (better 34.Ra6 Qe4 35.a8Q Qc2+-) 34...Bb6 35.Qb6 Nd7 36.Qb5 Nf8 37.Qb8 Qe4 38.a8Q Qa8 39.Ra8 Kh7 40.Qf8 Kg6 41.Qe7 (41.h4 Ne4 42.h5 Kh5 43.Qf7 Kh4 44.Qg7 Kh5 45.Rh8 Ng5 46.Rh6 Kg4 47.f3 Kf5 48.Qf6) 41...h5 42.e4! Ne4 (42...Ne4 43.Ra7 Mate attack) 43.f3 Nf6 44.d5 (44.Ra7 Kh7 45.Qf7 Ne8 46.Re7 h4 47.Qh5 Kg8 48.Re8) 44...Kf5 (44...Nh7 45.Ra7 Nf6 46.Qf7 Kf5 47.Ra4 g5 48.g4 hg4 49.fg4 Ke5 50.Qe6) 45.Qf7 (45.de6 h4 46.ef7 Kg6 47.f8N Kh5 48.Qe5 g5 49.Qg5) 45...ed5 (45...Ke5 46.Qe6 Kd4 47.Ra4 Kd3 48.Qe3 Kc2 49.Qe2 Kc1 50.Ra1) 46.Qe6! Ke6 47.Ra6 Kf5 48.Rf6! gf6 (48...Kf6 49.Bb2 Pinning; 48...gf6 49.Kf2 Combination) 49.f4 Ke4 50.g3 (better 50.Kf2 Kd3+-) 50...f5 (50...d4 51.Kf2 f5 52.Bb2+-) 51.Kg2 Kd3 (51...d4 52.Kh3+-) 52.h4 (52.Kh3 Ke2+-) 52...Kc2 (52...Ke4+-) 53.Be3 Kd3 54.Bd4 (better 54.g4 fg4 55.f5 Ke3+-) 54...Ke4 (better 54...Kd4 55.Kf2 Ke4-+) 55.Be5+- d4 56.Kf2 d3 57.Ke1 1-0. ClayPigeons (2220) - le_batman (2230), Rated Bullet game, lichess.org, 2019.

6.Nf3 0-0 7.e3 a6 8.a4 b5 (better Nc6!?+=) 9.ab5+- a5? (9...Bb7 10.c4 ab5 11.Ra8 Ba8+-) 10.Be2 (10.c4 Bb4 11.Bc3 Bb7+-) 10...a4 (10...Ne4 11.0-0+-) 11.0-0 Nbd7 (11...Qa5 12.c4 Bb4 13.Bd3+-) 12.c4 Bb8 (12...Bb7 13.c5 Bc5 14.dc5 Nc5 15.Nc3+-) 13.Ra4 Ra4 14.Qa4 Bb7 15.Ba3 (15.c5 Qc7 16.b6 Qc8+-) 15...Ng4 (15...Qc7 16.g3 (16.Bf8?! Bf3 17.g3 Be2=) Rd8 17.Be7+-) 16.Bf8 Nf8 (16...Bf3 17.Bf3 (worse 17.gf3 Qh4 18.h3 Qh3 19.Bd6 Bd6 20.Qa8 Nf8 21.Qf8 Kf8 22.Rc1 Qh2 23.Kf1 Qf2) 17...Nh2 18.Qa8+-) 17.h3 (better 17.Nbd2 e5 18.h3 Nf6+-) 17...h5 (17...Bf3 18.Bf3 (18.gf3?! Qh4 19.fg4 Qh3=; 18.hg4?? Qh4 19.Rc1 Qh2 20.Kf1 Qh1) 18...Nh2 19.Rc1 Nf3 20.gf3+-) 18.Nbd2 (18.hg4 hg4 19.Ne5 Be5 20.de5 Qh4+-) 18...Qf6 (18...Nf6 19.c5+-) 19.Qa5 (19.hg4 hg4 20.Ne5 Be5 21.de5 Qh4+-) 19...Ng6 (19...Qh6 20.e4 Bf4 21.g3 Bg3 22.hg4+-) 20.Qb6 (20.c5 Qe7 21.c6 Bc6 22.bc6 Nf6+-) 20...Qe7 21.Ra1 (21.hg4 hg4 22.Ng5 Nf8+-) 21...Bc7 (21...Nf6 22.Ne5! Ne5 23.de5+-) 22.Qc5 (22.hg4?! Bb6 23.gh5 Nh4+-) 22...Bd6 23.Qg5 (23.Qa7!? Nh6+-) 23...Nf6 24.Ra7 (better 24.c5!? Bc7+-) 24...Bb8 25.Ra2 Qc7 (25...e5 26.de5 Ne5 27.Nd4+-) 26.c5 Bd5 27.Bc4 Ne4 28.Ne4 Bc4 29.Ra8 Qb7 (29...Bd5 30.b6 Qc8 31.Nd6+-) 30.Rb8! Qb8 31.b6 Bd5 32.Nd6 Qa8 33.Qh5 Qa1 (33...Qa2 34.Ng5 e5 35.e4 Qa1 36.Kh2+-) 34.Kh2 Qb2 (34...Qb1 35.Ne5 Qc2 36.e4 Qf2 37.Ng6 fg6 38.Qe5+- (38.ed5?! Qf4 39.Kh1 Qf1 40.Kh2 Qf4 41.Kh1 Qf1 42.Kh2 Qf4=; worse 38.Qg6 Qf4 39.Qg3 Qg3 40.Kg3 Ba8+-)) 35.Ng5 (better 35.Nf7 Kf7 36.Ne5 Kg8 37.Ng6 Qf2 38.Qh8 Kf7 39.Qf8 Kg6 40.Qf2+-) 35...Nf8 (35...Qf2 36.Qg4 Qe3 37.Ngf7 Nf8+-) 36.Qf7 Kh8 37.Qf8 1-0. Bostonbliz (2640) - weijima (2630), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

6.Nf3 Be7 7.e3 b6 8.Bd3 Bb7 9.Nbd2 Nbd7 10.0-0 Qc7 11.c4 h5 (11...0-0 12.Qb1+/-) 12.e4 Ng4 13.e5 f6 (13...Rd8 14.Qb3+-) 14.Bg6 Kf8 (14...Kd8 15.h3+-) 15.h3 fe5? (better 15...f5+-) 16.hg4 e4 17.Ne4 hg4 18.Ne5 Ne5 19.de5 Rh6 20.Qg4 Kg8 (20...Qc6 21.Rae1 Bb4 22.Bc1 Rg6 23.Qg6+-) 21.Qe6 Kh8 22.Nd6 Bd6 23.ed6 (23.Qd6?! Qd6 24.ed6 Rg6+/-) 23...Qc6 24.Qg4 (better 24.f3!? Qc5 25.Rf2 Qg5+-) 24...Qd6 (24...Qg2 25.Qg2 Bg2 26.Kg2 Rg6 27.Kh3 Rd6+-) 25.Bh5 Rg8 (25...Qc7 26.Rfe1 Rg8 27.Qg5+-) 26.Rad1 Qc5 (26...Qe6 27.Qg5 Be4+-) 27.Rd8! Qe7 (27...Rd8 28.Qg7 Mate attack) 28.Rd7 (28.Rd7 Bf3 29.gf3 Qd7 30.Qd7 Rh5 31.Qf7 Rg5 32.Kh2 Rf8 33.Qf8 Kh7 34.Rd1 Rh5 35.Kg3 Rg5 36.Kf4 Rg1 37.Rg1 g5 38.Rg5 a6 39.Qg7) 1-0. FeegLood (2430) - yoseph2013 (2125), lichess.org, 2017.

5.Nf3 0-0 6.Be2 d5 7.0-0 Nc6 8.c4 Bd6 9.d4 dc4 10.Bc4 a6 11.Nbd2 b5 12.Bd3 Bb7 13.Rc1 Qe7 14.Bb1 Rac8 15.Ng5 (15.e4 Bf4=) 15...h6 (15...Nb4 16.Qe2=+) 16.Nge4= Ne4 17.Ne4 Bb8 (17...Na5 18.Nd6 Rc1 19.Qc1 Qd6 20.Ba3=) 18.Nc5 Rfd8 (18...Na5 19.Nb7 Rc1 20.Bc1 Qb7 21.e4=) 19.Qd3 g6 20.Qe2 Nb4 21.Nb7 Qb7 22.a3 Nd5 23.e4 Nf4 (23...Nb6 24.Rc8 Rc8 25.e5=) 24.Qf3 Qe7 25.g3 Nh3 26.Kg2 Ng5 27.Qe3 Ba7 (27...f5 28.ef5 Qb7 29.f3 ef5 30.Qb3 Nf7 31.Qe6+/-) 28.h4 (28.Rc8 Rc8 29.h4 Nh7 30.Qh6 Qf6+/-) 28...Nh7 (28...Rc1!? 29.Qc1 Nh7+=) 29.Rc8+/- Rc8 30.Qh6 Nf6 31.d5! e5 (31...ed5 32.ed5 Passed pawn) 32.Qg5+- Re8 33.Rc1 Bd4 34.Bd4 ed4 35.Re1 (better 35.Rc6!? Kg7 36.Ra6+-) 35...Kg7 36.d6 (36.h5 Rd8 37.h6 Kh7+/-) 36...Qe6?? (better 36...Qd6 37.Qd2 Ng4=) 37.e5 (37.Qc5 Qc4 38.Rc1 Qc5 39.Rc5 Rd8+-) 37...Nd7 (37...Qd5 38.Kh2 Nd7 39.f4+/-) 38.f4 Qd5 39.Be4 Qa2 40.Kg1 (40.Kf1 Qc4 41.Kg1 Qc3+/-) 40...Qd2 (40...Qa3!? 41.h5 Qc3+-) 41.Kf1+- d3 (better 41...Qc3+-) 42.f5?? (better 42.Qe7 Re7 43.de7+-) 42...Re5?? (better 42...Qg5 43.hg5 Re5 44.f6 Kf8+/-) 43.Qd2+- gf5 44.Bd3 (44.Qg5 Kh8 45.Rc1 Kh7 46.Bd3 Nf8 47.Rc7 Nd7 48.Rc8 Re1 49.Ke1 Ne5 50.Qh5 Kg7 51.Qh8 Kg6 52.Rg8) 44...Re1 45.Qe1 Ne5 46.Qe5 f6 47.Qf5 (47.Qe7 Kg6 48.g4 b4 49.Bf5 Kh6 50.Qf6) 47...Kh6 (47...Kf7 48.Qd7 Kg8 49.Qh7 Kf8 50.Bg6 b4 51.Qf7) 48.Qg6 1-0. doreality1991 (2705) - IMFAR (2710), Rated bullet game, lichess.org, 2020. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

5.Nf3 Bb6 6.c4 d5 7.Be2 Nc6 8.0-0 0-0 9.Nc3 d4 10.ed4 Nd4 11.d3 Bd7 12.Rb1 Bc6 13.Ne5 Rc8 14.Nc6 Rc6 15.Re1 Ne2 16.Qe2 (worse 16.Ne2 Ng4 17.Nd4 Qh4-+ (17...Bd4?! 18.Qg4 Bb2 19.Rb2=+)) 16...Bd4 17.Nb5 Bb2 18.Rb2 (worse 18.Qb2 Qd3 19.Na7 Ra6 20.Qb7 Ra2-/+) 18...a6 19.Nc3 Qd4 20.Nd1 Rd8 (20...b6!?=) 21.Rb7+= h6 (21...Qd3?? 22.Qd3 Rcc8 23.Qa3+-) 22.Ne3 (22.Nb2!?+/-) 22...Qd3= 23.Qd3 Rd3 24.g3 Rd2 25.a3 Ne4 26.f3 Ng5 27.Rf1 Re2 28.Rb3 Rd6 29.h4? (29.Rd1 Rd1 30.Nd1 Re1 31.Kf2 Rd1 32.Rb8 Kh7-+) 29...Nh3 30.Kh1 Rdd2 31.Ng4 f5 (31...f5 32.Re3 fg4 33.Re2 Re2 34.fg4 Rc2-+) 0-1. bjoernsen (2360) - SillyManofwar (2315), Rated blitz game, lichess.org, 2024.

5.Nf3 d5 6.Bb5 Bd7 7.Be2 Nc6 8.c4 0-0 9.Ne5 Ne5 10.Be5 Bc6 11.cd5 Bd5 12.Bf3 Rc8 13.0-0 a6 14.d4 Bd6 15.Bd6 Qd6 16.Bd5 Nd5 17.a4 Rc6 18.Nd2 Rfc8 19.Nf3 Rc2 20.h3 Qb4 21.Ne5 Rb2 22.a5 Rcc2 23.Nd7 Ne3 24.fe3 Rg2 25.Kh1 Rh2 26.Kg1 Rbg2 0–1. axtur777 – COVID_19_Positive, lichess.org, 2020.

5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.c4 a6 9.cd5 Nd5 10.Nc3 Nc6 11.Rc1 Bf6 12.Ba1 Be7 13.Nd5 ed5 14.Qb3 Rb8?? (14...Qd6 15.Bd3+=) 15.Rc2 (better 15.Rc6 bc6 16.Qb8+-) 15...Be6 16.Rfc1 d4 17.Qb2 Bf6 18.ed4 Bd5 19.Qc3 (19.Ne5!?+=) 19...Bf3 20.Qf3 (20.Bf3? Nd4 21.Qc4 b5-+; 20.gf3?? Nd4 21.Qd3 Nc2 22.Qc2 Ba1 23.Ra1 Rc8-+) 20...Nd4 21.Bd4 Bd4 22.Bd3 b5 23.Be4 Qe7 24.d3 Qe5 25.Rc7 Rbd8 26.g3 h6 27.h4 g6 28.h5 g5 (28...Qg5 29.R1c6=) 29.Kg2 (better 29.R7c6+/-) 29...Qe6?? (better 29...f5 30.R1c6 fe4 31.Rg6 Kh8 32.Rh6 Kg8 33.Rg6 Kh8 34.Rh6 Kg8 35.Rg6 Kh8 36.Rh6=) 30.R1c6+- Qe5 31.Rh6 (31.Rh6 Qc7 32.Qf5-+) 1-0. ZibbitVideos (2430) - toar4 (2380), Rated Bullet game, lichess.org, 2015.

5.Nf3 Be7 6.Be2 d6 7.0-0 0-0 8.c4 Nbd7 9.d4 a6 (9...b6 10.Nc3=) 10.Nbd2 b6 11.a4 Bb7 12.Rb1 Qc7 13.Bc3 Rfb8 14.Qb3 d5 (14...Ne4 15.Ne4 Be4 16.Rb2=) 15.Rfc1 dc4 16.Qc4 (16.Bc4 Rc8+=) 16...Qd8 (16...Qc4 17.Bc4 Bc6 18.a5=) 17.Qb3 h6 (17...Bd5 18.Qd1=) 18.Nc4 (18.Bb4 Bb4 19.Qb4 Rc8+=) 18...Ne4 (18...b5 19.Ba5 bc4 20.Bd8 cb3 21.Be7=) 19.Ba1 (19.Bb4 b5 20.Be7 Qe7=) 19...Bd5 20.Qd3 Nd6 (20...Bh4 21.Nh4 Qh4 22.g3=) 21.Nce5 (21.Nd6 Bd6 22.e4 Bb7=) 21...Be4 22.Qd1 Bb1 23.Rb1 (23.Nc6 Qe8 24.Nb8 Rb8 25.Rb1 b5+=) 23...Ne5 (23...Rb7 24.Nd7 Rd7 25.Ne5=+) 24.Ne5= Rc8 (24...Qe8 25.Bf3 b5 26.Bc6=) 25.Bf3 Ra7 (25...Bf6 26.Ba8 Ra8 27.d5 ed5 28.Qd5=) 26.Nc6+= Rc6 27.Bc6 b5 28.ab5 ab5 29.d5 ed5 (29...Rc7 30.Bd4 Qc8 31.Bb6 (31.Bb5? Nb5 32.de6 fe6-+) 31...Rc6 32.dc6 Qc6 33.Bd4+=) 30.Qd5 (30.Qd4 Ra1 31.Qa1+- (worse 31.Ra1 Bf6 32.Qd1 Ba1 33.Qa1 b4=+)) 30...Qa5 31.g3 (31.Qe5 Bf8+/-) 31...b4+= 32.Qa5 (32.Qd4!? Bf8 33.Bb2+=) 32...Ra5= 33.Bd4 Nf5 34.Rb4?? (better 34.Kg2=) 34...Bb4-+ 35.Bb2 (35.Kf1 Nd4 36.ed4 Ra1 37.Ke2 Ra6-+) 35...Ra2 36.Be5 f6 (better 36...Be1 37.f4 Ne3-+) 37.Bd5 Kh8 38.Ba2 fe5 39.Kg2 e4 (39...g6 40.Kf3-+) 40.Bb1 (40.Bd5 Nd6-+) 40...Nd6 41.g4 (41.f3 ef3 42.Kf3 Nc4-+) 41...g5 42.Kg3 (42.f3 ef3 43.Kf3 Nc4-+) 42…Kg7 0-1. Bostonbliz (2640) - weijima (2630), Casual bullet game, lichess.org, 2023. (=1.b4 c5 2.bc5 e6 3.Bb2 Nf6)

5.g4 0-0 6.Qf3=+.

5.g4 0-0 6.g5 Ne4 7.h4 d5 8.Bd3 Nc6 (8...Qb6 9.Bc3-/+) 9.Nc3 (9.Be4 de4 10.Nc3 f5=) 9...Nb4 (better 9...Nc3!? 10.Bc3 e5-/+) 10.Be4+= de4 11.Ne4 Be7 12.a3 Nd5 13.Qg4 Kh8 14.h5 e5 (14...f5!? 15.gf6 Nf6+/-) 15.Qg3 Bf5?? (15...f6 16.h6 g6 17.Be5+/-) 16.h6 (16.Qe5!? f6 17.Qf5 fg5+-) 16...Be4?? (better 16...g6 17.Qe5 f6+-) 17.hg7+- Kg7 18.Qe5 Bf6 (18...f6 19.Qe4 Rh8+-) 19.gf6 Qf6 20.Qg5 Bg6 21.Bf6 (21.Qd5 Qb2 22.Ra2 Qc1 23.Ke2 Rfd8=+) 21…Nf6 1-0. is_er_nog_hoop (2445) - SomeCM (2375), Rated blitz game, lichess.org, 2020.

5.g4 0-0 6.g5 Ne8 7.h4 b6 8.Bg2 Nc6 9.c4 Bb7 10.Nc3 Qc7 11.Ne4 Ne7 12.Qh5 (12.h5 Nd6 13.h6 Ne4 14.hg7 f5+-) 12...d5 (better 12...Nd6 13.Be5 A) worse 13...Be4 14.Be4 Ng6 15.Bd6 (worse 15.Ba8 Ne5 16.Bg2 Bb4-/+) 15...Bd6 16.Ba8 Ra8 17.Qe2+=; B) 13...Ng6 14.Bd6 Bd6-/+) 13.Nf6? (better 13.Bg7 Kg7 14.Nf6 Nf6 15.gf6 Kh8 16.fe7=+) 13...gf6-+ 14.gf6 Ng6 (14...dc4?? 15.fe7 Ng7 16.Qg4+-) 15.Qh6 (15.cd5 Qd7-+) 15...dc4 (better 15...d4 16.Nf3 Bd6 17.Rh3 Nf6 18.h5-+) 16.Bb7? (better 16.Nf3 Bf3 17.Bf3-/+) 16...Qb7 17.Rh2 Rd8 (17...Bd6!? 18.Nh3 e5 19.h5 Nf6 20.Ng5-+) 18.h5 Qd5?? (18...Bb4 19.Nf3 Qd7 20.Bd4+/-) 19.0-0-0?? (19.hg6 Qd2 20.Kf1 Qd3 21.Ne2 Qg6 22.Rg2+-) 19...c3 20.Bc3?? (20.Bc3 Qa2 Discovered attack; 20.dc3 Qd1 Mate attack) 20...Qa2 21.Bb2 (21.Re1 Qb3 22.Qh7 Kh7 23.hg6 Kg8 24.Rh8 Kh8 25.g7 Kh7 26.d4 Qc3 27.Kb1 Qb3 28.Kc1 Bd4 29.gf8N Kg8 30.Kd2 Qa2 31.Kd3 Be5 32.Nd7 Rd7 33.Ke4 Qd5) 21...Ba3 22.Ba3 (22.Qg7 Ng7 23.Ba3 Rc8 24.Bc5 Rc5) 22...Rc8 23.Bc5 Rc5 0-1. is_er_nog_hoop (2575) - aram1985 (2430), Checkmate Coronavirus Bullet Arena, lichess.org, 2020.

5.g4 Qb6 6.Bc1 Ng4?? (better 6...e5=+) 7.Qg4+- 0-0 8.Nc3 d5 9.Na4 (9.Nf3 Qc7+-) 9...Qb4 10.Qb4 Bb4 11.Rb1 Nc6 12.Nf3 Bd7 (12...Bd6 13.Nc3+-) 13.Bb5 (13.c3!? Bd6+-) 13...Bd6 14.Rg1 a6 (14...Rfd8 15.Bb2 e5 16.Nc3+-) 15.Bc6 Bc6 16.Bb2 f6 17.Nb6 Rad8 18.Nd4 Rfe8?? (18...Kf7 19.f4 Rg8+-) 19.Nc6 bc6 20.Na4 (better 20.Bf6 Kf7 21.Bd8 Rd8 22.Rg4+-) 20...Bh2 (better 20...Rb8!? 21.h3 Re7+/-) 21.Rg2+- Be5 22.Be5 fe5 23.Nc5 (23.Rb7!? g6 24.Rh2 h5+-) 23...Rb8 24.Rb8 Rb8 25.Na6 Rb2 26.a4 Rc2 27.Ke2 Rc4 28.Nc7 (28.a5 Ra4+-) 28...Ra4+/- 29.Ne6 g6 30.Rg5 e4 31.Nd4 c5? (better 31...Rc4!?+/-) 32.Nc6 (32.Ne6 Ra6 33.Nc7 Rc6 34.Nd5 Kf7+-) 32...d4 33.ed4 (33.Rc5?! d3 34.Kf1 Ra2 35.Ne7 Kf7+/-) 33...cd4 34.Rd5 d3 35.Ke3 Ra2 (35...h5 36.Rd4 Rd4 37.Nd4+-) 36.Ne5 Kg7 37.Nc4 Rc2 38.Rd4 (38.Ke4?! Rc4 39.Kd3 Rc7=) 38...h5 39.Re4 h4 (39...g5+-) 40.Kd3 Rc1 41.Rh4 Kf6 42.Ne3 Ra1 43.Rg4 g5 44.Ke2 Ra5 45.d4 Ra2 46.Kf3 Ra3 47.d5 Ra5 48.Re4 Ra7 (48...Ra6 49.Kg4+-) 49.Re6 Kf7 50.Kg4 Ra2 51.Kg5 (51.f3 Rd2 52.Kf5 Rf2+-) 51...Rf2 52.Nf5 (52.Ng4 Rg2+-) 52...Rg2 53.Kf4 Rd2 54.Ke5 Re2 55.Kd6 Ra2 56.Nh6 Kf8 57.Nf5 Ra6?? (57...Kf7 58.Nd4 Rd2+-) 58.Ke5+- Ra5 59.Ne3 (59.Rf6!? Kg8+-) 59...Kf7 60.Rf6 Ke7 (60...Ke8 61.Nf5 Ra2 62.Ng7 Kd7 63.Rf7 Kc8 64.Ne6 Re2 65.Kd6+-) 61.Nf5 Kd7 62.Rf7 Kd8 (62...Kc8 63.Nd4 Kd8 64.Ke6+-) 63.Nd6 1-0. FeegLood (2580) - Arka50 (2710), Time forfeit, lichess.org, 2015.

5.g4 Qb6 6.Bc3 Bb4 7.g5 Bc3 8.Nc3 Qc6 9.Qf3 (worse 9.gf6 Qh1 10.Nf3 d5=) 9...Qf3 (9...Ng8!?+=) 10.Nf3+/- Ng8 (better 10...Nd5!? 11.Nd5 ed5+/-) 11.Nb5+- Na6 12.h4 (better 12.Nd6 Ke7 13.Ne5+-) 12...Ke7+= 13.h5 d6 14.Bd3 Bd7 15.Ke2 Nc5 16.a4 a6 17.Nc3 Bc6 Attacks the isolani on a4 18.g6 hg6 19.hg6 Nh6 20.gf7 Nf7 21.Rhg1 e5 22.Ng5 (22.Rg7 e4 23.Be4 Ne4 (23...Be4? 24.Ng5+-) 24.Ne4 Be4 25.Rf7 Kf7 26.Ng5 Ke7 27.Ne4 Rac8+=) 22...Ng5 23.Rg5 Ne6 24.Rg6 Raf8 25.Bc4 (25.Be4!?=+) 25...Bf3-/+ 26.Ke1 Rh1 27.Bf1 Rfh8 28.d3 Kf7 29.Rg3 e4?? (better 29...Bc6-/+) 30.de4 (worse 30.Ne4 Be4 31.de4 R8h4=) 30...Rf1 (better 30...Bh5!?+/-) 31.Kf1+- Bh5? (31...Rh1 32.Rg1 Rg1 33.Kg1+-) 32.Rg1 (32.Rb1 Nc5+-) 32...Bg6 (32...Bf3 33.Rb1 Nc5 34.Rb6+-) 33.f3 Nf8 (33...Rh2 34.Rb1 Nc5 35.Rb2+-) 34.Rd1 (better 34.Rb1 Rh3 35.Rb7 Kg8+-) 34...Nd7 (34...Rh2+-) 35.Rd6 Ne5 (35...Nf6 36.e5 Bc2 37.ef6 gf6 38.Rd7 Ke6 39.Rgg7+-) 36.Nd5 (better 36.f4 Nf3 37.Rgg6 Nd2 38.Kf2 Nc4+-) 36...Nf3 (36...Rh6 37.Nf4 Bh7 38.Rh6 gh6+-) 37.Rd7 (37.Rd7 Kf8 38.Rg6+-) 1-0. is_er_nog_hoop (2560) - martiand2 (2405), Rated bullet game, lichess.org, 2019.

5.g4 Qb6 6.Bf6 gf6 7.Nc3=.

5.g4 d5 6.g5+= Nfd7 7.h4 (7.Bg7!? Rg8 8.Bh6+=) 7...f6 (7...0-0 8.Nc3=+) 8.Qh5= g6 9.Qg4 0-0?? (better 9...Qb6 10.Bd4 Bd4 11.Qd4 Qd4 12.ed4 Nc6=) 10.Qe6+- Kh8 (10...Kg7 11.h5+-) 11.Qd5 Nc6 12.gf6 (better 12.h5 Nb4 13.Qc4 gh5 14.a3+-) 12...Rf6? (12...Qb6 13.Qb3 Nf6 14.h5+-) 13.Bh3 (better 13.Bc4!? Be7 14.h5 g5 15.Qg5 Qf8+-) 13...Qe7 (13...Nb4 14.Qb3+- (14.Bf6 Qf6 15.Qb3 Qa1-/+)) 14.Bd7 Bd7 15.Bf6 (15.h5 Be6 16.Qg5 Bd4 17.ed4 Bd5 18.Ne2 Re8+=) 15...Qf6 16.Nc3 Rd8?? (better 16...Nb4 17.Qd7 Nc2 18.Ke2 Qa6 19.d3 Na1+-) 17.Qc5 b6 (17...Rf8 18.f4+-) 18.Qg5 Qf8 (18...Kg7 19.Qf6 Kf6 20.h5+-) 19.Nge2 (19.h5 Qf5 20.Qf5 gf5+-) 19...Ne7 (19...Nb4 20.Rc1+-) 20.Qe5 Kg8 21.Nd4 Nf5 22.Nd5 (better 22.Qd5 Kg7+-) 22...Re8 (22...Nd4 23.Nf6 Kf7 24.ed4+-) 23.Nf6 Kf7 24.Ne8 Qe8 25.Qe8 Ke8 26.Nf5 Bf5 27.d3 1-0. 1280) FeegLood (2595) - worldsong (2320), lichess.org, 2015.

5.g4 d5 6.g5 Ne4 7.h4 (7.f3!? Qg5 8.fe4 Qh4 9.Ke2 Qh5 10.Ke1 Qh4 11.Ke2 Qh5 12.Ke1 Qh4 13.Ke2=) 7...0-0=+ 8.Bd3 f5 9.gf6 Nf6 10.Nf3 Nc6 11.Ng5 e5 12.c4 e4 (12...h6 13.Nh3-+) 13.Bc2 Bg4 14.Bf6 (14.Qc1=+) 14...Qf6?? (better 14...Bd1 15.Bd8 Bc2-+) 15.Qg4= Qa1 16.Ne6?? (16.cd5 Nb4 17.Be4+-) 16...Bd6?? (16...Nb4 17.0-0 Qe5 (17...Nc2? 18.Nc3 Qf1 19.Kf1+-) 18.Nf8 Rf8-+ (18...Nc2 19.Qe6 Qe6 20.Ne6+/-; 18...Kf8?! 19.Bb3-/+; 18...Bf8?! 19.Bb3=+)) 17.cd5 Nb4 18.Be4 Rac8?? (18...Rfc8 19.Ng5 Qf6 20.Bh7 Kf8+-) 19.d4 (better 19.Nf8!? Rf8 20.Qe6 Rf7 21.Qd6 Na2 22.Qb8 Rf8 23.Qa7 Qe5 24.Bh7 Kh7 25.Qa2 Qe4+-) 19...Rf7 (better 19...Rc1 20.Qd1 Rd1 21.Kd1 Rf2-+) 20.Bh7!+- Kh7 21.Ng5 Kg8 22.Qc8 Rf8 (22...Bf8 23.0-0 Rf6+-) 23.Qe6 Kh8 24.Qg6 (24.Qd6?? Qb1 25.Ke2 Qd3 26.Ke1 Nc2) 24...Nc2 25.Qc2 (25.Qc2 Qb1 26.Qb1 Rf5 27.Qf5 Bb4 28.Ke2 Kg8 29.Qe6 Kh8 30.Qe8 Bf8 31.Qf8; 25.Ke2 Rf2 26.Kf2 Kg8 27.Qf7 Kh8 28.Qe8 Bf8 29.Qf8) 1-0. is_er_nog_hoop (2540) - makaciko (2350), Rated blitz game, lichess.org, 2022.

5.g4 Be7 6.g5 Nd5 7.h4 (7.Bg7 Rg8 8.Bd4 Rg5=) 7...Rg8 (7...0-0!?=+) 8.Bd3+= g6 9.Nf3 Nc6 10.a3 Qb6 11.Ra2 d6 12.Nc3 Nc3 13.Bc3 (worse 13.dc3 h6=+) 13...e5 14.Rb2 Qc7 15.Qb1 (15.e4 h6=) 15...Rb8 (15...d5 16.Bb5 e4= (worse 16...Ba3 17.Be5 Bd6 18.d4+=)) 16.h5 (better 16.e4!?=) 16...Bg4-/+ 17.Be4 Qd7 (17...gh5 18.Rb5-/+) 18.Bd5 (18.hg6 hg6 19.Rg1 Be6=) 18...Be6 (better 18...gh5!? 19.Nh2 Rg5 20.Ng4 Rg4=+) 19.Be6= fe6 20.hg6 hg6 (20...Rg6 21.Rh7 e4 22.Nd4 Rg5 23.Qa2=) 21.Rh7+= Kf8 (21...Nd8 22.Ba5=) 22.Ke2 Rg7 (better 22...Ke8!?+=) 23.Qh1+- Bd8 24.Rh8 Kf7?? (24...Rg8+-) 25.Qh6 (better 25.Ne5 Ne5 26.Be5+-) 25...Bc7 (25...Qc7 26.Ke1+/-) 26.Nh4 (better 26.Rh7!? Kg8 27.Qg6 Rg6 28.Rd7+-) 26...Rh8+= 27.Qh8 Rg8 (27...Ba5 28.Ba5 Na5 29.d3+=) 28.Qh7 (better 28.Qf6!? Ke8 29.Rb7+-) 28...Rg7+= 29.Qh8 Bd8 (29...Rg8 30.Qf6 Ke8 31.Rb7 Ne7+-) 30.f4+/- Qe8?? (better 30...Rg8 31.Qh6 Be7+=) 31.Rb7+- Ne7 32.Qe8 Ke8 33.fe5 (worse 33.Ra7 Rh7 34.Ng2 Rh2+-) 33...Rh7 34.ed6 (34.Nf3!? d5+-) 34...Rh4 35.de7 Be7 36.Ra7 Bg5 37.Rg7 Rh2 (37...Be7 38.Rg6 Kf7 39.Rg7 Kf8 40.Be5+-) 38.Kd3 Rh6 (38...Be7 39.Rg6 Ba3 40.Re6 Kd7 41.Ra6+-) 39.a4 Be7 40.a5 Bf8 (40...Rh4 41.Bd4 Rh5 42.a6+-) 41.a6 Bg7 42.Bg7 (42.a7 Bc3 43.a8Q Kf7 44.Kc3 g5+-) 42...Rh7?? (better 42...Rh5 43.Bc3 Rc5+/-) 43.a7+- Rg7 44.a8Q Kf7 45.Qf3 Ke7 46.Ke4 Rf7 (46...g5 47.Ke5 Rg6 48.Qb7 Kf8 49.c4+-) 47.Qg3 Rf5 48.Qg6 Kd6 (48...Rb5+-) 49.Qf5! ef5 50.Kf5 Kd5 51.Kf4 Kc4 52.Kf3 (52.Kf3+-) 1-0. FeegLood (2575) - worldsong (2340), Time forfeit, lichess.org, 2015.

5.g4 Be7 6.g5 Ng8?? 7.h4 (better 7.Bg7 Bg5 8.Bh8+-) 7...f6 8.Bd3 Nc6 9.Qh5 Kf8 10.g6 (10.Bh7!? d5 11.Qg6+/-) 10...h6 11.Nh3 f5 12.Nf4 (12.Ng5 Nf6 13.Bf6 Bf6=) 12...Bf6 (12...Nf6!? 13.Qe2 e5=+) 13.Nc3+= a6 14.0-0-0 Nge7 15.e4 fe4 16.Ne4 Bb2 17.Kb2 Nf5 18.Qf3 d5 (18...Nh4?? 19.Ne6 Ke8 20.Qf7) 19.Ng3 Qf6 20.c3 Ng3 (20...Nh4? 21.Rh4 Ke8 22.Qh1+-) 21.fg3 (21.Qg3 Kg8 22.Rhe1=) 21...Bd7?? (better 21...e5 22.Qd5 ef4-/+) 22.Rhf1+/- Ke7? (better 22...Kg8+/-) 23.Nd5!+- ed5 24.Qd5 Be6 (24...Nb4 25.Qe4 Qe6 26.Qb4 (26.cb4?! Qe4 27.Rf7 Kd6 28.Be4 Rhg8+-) 26...Kd8 27.Rf7+-) 25.Rde1 (better 25.Qc5 Kd7 26.Rf6 gf6 27.Bf5 Bf5 28.Qf5 Kc7 29.Qf6+-) 25...Qf1 (25...Rhd8 26.Qc5 Rd6 27.Rf6 gf6 28.Re6 Ke6 29.Bf5 Ke7+-) 26.Qe6 Kd8 27.Qd6 Kc8 28.Rf1 (28.Bf1 b5 29.Qc6 Kb8 30.Qb6 Kc8 31.Bh3) 28...Rd8 (28...b5 29.Rf7 Ra7 30.Bf5 Rd7 31.Qd7 Kb8 32.Qb7) 29.Bf5 (29.Bf5 Rd7 30.Bd7 Kd8 31.Rf8) 1-0. is_er_nog_hoop (2495) - FranklinAPalomo (2380), Rated bullet game, lichess.org, 2019.

5.g4 Bf8 6.g5 Ne4 7.h4 d5 8.Bg2 Nd6 9.Ne2 Nc6 10.Nf4 a6 (10...Bd7 11.Nh5 Rg8 12.Bf6=) 11.Nh5= Rg8 12.Nc3 (12.Bf6 Qc7=+) 12...b5 (12...Nc4 13.Rb1=+) 13.Ne2 Bb7 14.Nef4 Rc8 15.Qg4 Nf5 (better 15...Ne7=+) 16.Nd5+/- ed5? (16...Ne5 17.Be5 Bd5+-) 17.Qf5+- Qd7 (17...Ne7 18.Qh7 Qc7 19.Bg7 Bg7 20.Ng7 Kd8+-) 18.Qh7 Nb4 (18...Ne7 19.Bg7 Bg7 20.Ng7 Kf8+-) 19.Qg8 Nc2 20.Kf1 (better 20.Ke2 d4 21.Ng7 Ke7+-) 20...Na1 (20...d4 21.Ng7 Ke7+-) 21.Ng7 (21.Ba1 Rc1 22.Ke2 Qg4 23.f3 Qg2 24.Kd3 Qh1 (24...Rh1?! 25.Ng7 Kd7 26.Qf7 Kc6 27.Qe8 Kb6 28.Qd8 Kc6 29.Qe8 Kb6 30.Qd8 Kc6 31.Qe8=) 25.Ng7 Kd7 26.Qf7 Kc6 27.Qf8 Qf1 (27...Ra1?! 28.Qf6 Kc7 29.Qe5 Kb6 30.Qd4 Ka5 31.Qc3 Kb6 32.Qd4 Kc7 33.Qe5 Kd7 34.Qe6 Kd8 35.Qe8 Kc7 36.Qe5=) 28.Kd4 Rc4 (worse 28...Ra1 29.Nf5 Qc4 30.Ke5+/-) 29.Ke5 Qa1 30.d4 Kb6-/+) 21...Kd8 22.Qf8 Kc7 23.Qb4 (23.Ba1?! Rf8 24.Be5 Kd8 25.Bf6 Kc7=) 23...Nc2 24.Qf4 Kb6 25.Bh3 Qc6 26.Bc8 Bc8 (26...Qc8 27.d3 d4 28.e4+-) 27.Bd4 (27.h5 Bb7+-) 27...Kb7 (27...Ka5 28.h5 Qc4 29.Kg2 Nd4 30.h6+-) 28.Kg2 (better 28.Qf7!? Bd7+-) 28...Nd4 29.Qd4 Bd7 (29...Qd6 30.h5 Qe7 31.h6 Qg5 32.Kf3+-) 30.Nh5 (30.h5 Qc8+-) 30...Qe6 (30...Qc4 31.Qc4 bc4 32.Nf6+-) 31.Nf4 (better 31.Nf6 Bc6+-) 31...Qg4 32.Kf1 (better 32.Kh2 Qh4 33.Kg1 Qg4 34.Ng2 Qg5 35.Kf1+-) 32...Qd1= 33.Kg2 Qg4 34.Kh2 Qh4 35.Nh3 (better 35.Kg1 Qg4 36.Ng2 Qg5 37.Kf1+-) 35...Qh3 36.Kg1 Qf5 37.Rh5 (37.f4 Qb1 38.Kg2 Qc2+-) 37...Qb1 (37...Qg6 A) 38.Qd5? Bc6 39.Qd8 Qb1 40.Kh2 Qh1 41.Kg3 Qf3 (41...Qh5?! 42.e4=+) 42.Kh4 Qf2 43.Kg4 Bf3 44.Kf4 Bh5 45.Ke5 Qg3 46.Kf6 Bg6-+; B) 38.Qh4+-) 38.Kh2 1-0. FeegLood (2510) - toar4 (2200), Time forfeit, lichess.org, 2015.

6.Qf3 Nc6 7.h4 d5 8.g5 hg5 9.hg5 Rh1 10.Qh1 Ne4 (10...Nd7 11.Qh8 Bf8 12.Bg7 Qg5 13.Bf8 Nf8 14.Nh3=) 11.d3 (better 11.Qh8 Kd7 12.Qg7 Qg5 13.Qf7 Qe7 14.Qf3+=) 11...Qa5-/+ 12.Ke2 Nd6?? (better 12...Qa4 13.Qh8 Bf8-+) 13.Qh8+= Kd7 14.Qg7 Ne7 15.Bh3 Qb4 16.a3 Qh4 17.Nc3 Qh5 18.Kd2 Nef5 19.Bf5 Nf5 20.Qf6 Be7 (20...Qh2 21.Qf7 Kc6 22.Nce2 Qf2 23.Bd4 Bd4 24.ed4 Qe3 25.Kc3 Qg5 26.Nf3+=) 21.Qe5 (better 21.Nd5 Bd8 22.Be5 Ne3 23.fe3 ed5 24.Qd6 Ke8 25.Bf6+-) 21...Qg5 (worse 21...Bg5 22.Nd5 ed5 23.Qf5 Kc6 24.Qe5+/-) 22.Nf3 Qg2 23.Nd5?? (better 23.Ke2 f6 24.Qf4=) 23...Qf2-+ (23...Qf3 24.Qc7 Ke8 25.Nf6 Bf6 26.Bf6-+) 24.Kc3 Bd6 (better 24...Qf3 25.Ne7 Ne7-+) 25.Nf6 Ke7?? (better 25...Kd8 26.Qe4 Ne3-+) 26.Nd5= Kd7 27.Nf6 Kd8 28.Qe4 Qe3 (28...Bd7 29.Ne1 Bc6-+) 29.Rh1=+ Qe4 30.de4 Ng3 31.Rh8 Ke7?? (better 31...Kc7+/-) 32.e5?? (better 32.Kd3 e5 33.Nd5 Kd7 34.Ne5 Be5 35.Be5+-) 32...Be5=+ 33.Ne5 Kf6 34.Kc4 (34.Kd3 b6 35.Rh7 Ba6 36.Ke3 Ke7=) 34...Ke7 (34...b5 35.Kb3=+) 35.Kc5 (35.Rh7 Nf5 36.Rf7 Kd6=) 35...Nf5 (35...Ne4 36.Kd4 b6 37.Nf7 Bb7 38.Ra8 Ba8-/+) 36.a4? (better 36.Rh7=+) 36...b6-+ 37.Kc6 Bb7! 38.Kb7 Rh8 39.Nc6 (better 39.Ng6 fg6 40.Bh8-+) 39...Kd6?? (better 39...Kd7 40.Bh8 Nd6 41.Ka6 Kc6-+) 40.Bh8+- Kd5 41.Ka7?? (better 41.Na7 Nd6 42.Kb6 Nc4 43.Kc7 f5+-) 41...Nd6?? (better 41...Kc6 42.Be5 Ne3-+) 42.Ne7 (better 42.Kb6!? Nc4 43.Kc7 Kc5+-) 42...Kc5 43.Be5 (better 43.c3 Nc4 44.Bd4 Kd6 45.Nc8 Kc6 46.Nb6+-) 43...Nc4+/- 44.Bg3 (44.Bf6 Kb4 45.Nc8 b5 46.ab5 Kb5+/-) 44...e5 (44...b5!? 45.a5 Na5 46.Bf2 Kb4=) 45.Bf2 Kd6? (better 45...Kb4!? 46.Nd5 Ka4+/-) 46.Nf5 Ke6 47.Ne3 (47.Ng7!? Kf6 48.Ne8 Kf5 49.Bb6 e4+-) 47...f5?? (better 47...Nb2+-) 48.Nc4 1-0. is_er_nog_hoop (2525) - DefiantChair (2470), Blitz Titled Arena January '23, lichess.org, 2023.

6.Bg2 Be7 7.h4 Nc6 (7...Qb6 8.Bc3 d5 9.f4=) 8.g5 hg5 9.hg5 Rh1 10.Bh1 Nd5 (10...Ng8!? 11.f4 Bf8=) 11.Qh5+/- Bf8 (11...Bg5? 12.Bd5 ed5 13.Qh8 Ke7 14.Qg7+- (14.Bg7?! Qh8 15.Bh8 d6=)) 12.g6 f6 13.Bd5 ed5 14.Qd5 Qe7 15.Qf7 (better 15.Nc3!?+/-) 15...Qf7= 16.gf7 Kf7 17.Nf3 (17.Nc3 b6=) 17...Kg8 (17...d5!?=+) 18.Nc3= Nb4 19.0-0-0 d5 20.Rg1 Kh8? (better 20...Be6!?+=) 21.Rh1 (21.Rh1 Kg8 22.a3+/-) 1-0. FeegLood (2360) - BulletWillian (2220), lichess.org, 2016.

6.h4 Qb6 7.Qc1 Ng4=+ 8.Bg7 Rg8 9.Bb2 Nc6 (9...Qc6 10.f3 Bd6 11.Ke2-/+) 10.Nc3 Qc7 11.Ne4 Be7 12.f3 (better 12.Nf3=+) 12...d5-+ 13.fg4 de4 14.Ne2 Rg4 15.Bc3 (15.h5 Bd7-+) 15...Bh4 16.Kd1 Be7 (better 16...Bg5!? 17.Bh3 Rh4 18.Qb2-+) 17.Rh6-/+ Rg8 18.Qb2 Bd7 19.a4 a5 20.Rh7 Nb4 21.Qb3 0-0-0 22.Kc1 Nd5 (22...Rdf8 23.Nd4-/+) 23.Bd4 (23.Rf7 Rdf8 24.Rf8 Rf8=) 23...Bb4 (23...Bc6 24.Rb1-/+) 24.Rf7 Rgf8 25.Rf8 Rf8 (worse 25...Bf8 26.Nc3+=) 26.Bh3? (better 26.Kb2!? Bd2 27.Bg2-/+) 26...Rf2 (26...Qh2!? 27.c3 Bd6 28.Qc4 Kb8 29.Bg4-+) 27.Nc3 Rh2 (better 27...Bc3!? 28.Bc3 Qg3-+) 28.Bg4 Nc3 (28...Rh1 29.Kb2 Ra1 30.Ka1 Bc3 31.dc3 Qc6=) 29.dc3= Exerts pressure on the isolated pawn 29...Bc5 (29...Rh1 30.Kb2 Ra1 31.Ka1 Bf8 32.Be6 Be6 33.Qe6 Qd7+=) 30.Be6+= Bd4 31.cd4 Kb8 32.Bd7 Qd7 33.Kb2 Qc7 34.Rg1 Re2 (better 34...Ka7!?+/-) 35.Rg8 Ka7 36.Rg5 b6 37.Rf5 Ka6?? (better 37...Qc6+-) 38.Qb5 Kb7 39.Qe2 Qd7 (39...Qe7 40.c3 Qe6 41.Qf1+-) 40.Rb5 (40.Qf1 Qd6 41.Rf7 Kb8 42.Rf8 Qd8 43.Rd8 Kc7 44.Qf6 b5 45.Qe7 Kc6 46.Rd6) 40...Qc6 41.c4 Qg6 42.c5 Qg1 43.Rb6 Kc8 44.Rb5 (44.Qa6 Kd8 45.Rb8 Ke7 46.Rb7 Kd8 47.Qa8) 44...Qg8 45.Ra5 (45.Qh2 Qd8 46.Rb8 Kd7 47.Qd6 Ke8 48.Rd8 Kf7 49.Rd7 Ke8 50.Qe7) 45...Kb7 46.Qb5 Kc7 47.Ra7 Kd8 (47...Kc8 48.Qc6 Kd8 49.Qd7) 48.Qb8 (48.Qd7) 1-0. is_er_nog_hoop (2450) - jshutzman (2435), Rated blitz game, lichess.org, 2021.

6.h4 Nc6 7.f4=+.

6.h4 Nc6 7.Nh3 d5 8.g5= hg5 9.hg5 Nh5?? (9...Ne4!? 10.Bg7 Rh4=) 10.Be2?? (better 10.Nf4 Qg5 11.Rh5 Rh5 12.Qh5 Qh5 13.Nh5+-) 10...Qb6+= 11.Bc3 (11.Ba3 Ba3 12.Na3 g6+=) 11...d4 (11...Nf4! 12.ef4 d4=) 12.ed4 Bd4? (12...Nd4 13.Bh5 Qc6=) 13.Bh5+- Bc3? (better 13...e5 14.g6 f6+-) 14.Nc3 (14.dc3?! Rh5 15.Qh5 Qb2+=) 14...Nd4 15.Rb1 (better 15.Nf4 Bd7 16.g6+-) 15...Qc6+/- 16.Rg1 (16.Rf1 Nc2 17.Qc2 Rh5+/-) 16...g6?? (better 16...e5 17.g6 f6=+) 17.Bg4+- Rh3? (better 17...e5 18.Rg3 Bf5 19.Bf5 Nf5+-) 18.Bh3 Nf3 19.Kf1 (19.Ke2 Ng1 20.Qg1 Bd7+-) 19...Ng1?? (better 19...Nh2 20.Ke2 Qf3 21.Ke1 Qh3+=) 20.Kg1+- Bd7 (20...Qc7 21.Bg2 Rb8+-) 21.Bg2 Qc5 22.Ne4 Qe5 23.Nf6 Ke7 24.Rb7 Rd8 25.Qg4 Qe1 (25...Qd6 26.Bf1 a6 27.Qa4+-) 26.Kh2 (better 26.Bf1 Qd2 27.Bb5 Qc1 28.Kg2 Qd2+-) 26...Rh8 (26...Qd2 27.Qg3 Qd6+-) 27.Kg3 Qe5 28.Qf4 Qf4 29.Kf4 Rd8 30.Ke5 1-0. FeegLood (2605) - worldsong (2310), lichess.org, 2015.

6.h4 Nc6 7.Nh3 e5 8.g5 Ne4 9.d3=.

6.h4 Nc6 7.Nh3 e5 8.g5 hg5 9.hg5 Ng8 (9...Ne4 10.g6 f6 11.c4=+) 10.Bg2 d6 (10...d5 11.Nc3=+) 11.Nc3= Nge7 12.Ne4 Bb6 13.Ba3 Bc7 14.Rb1 b6 (14...d5 15.Nc3=+) 15.Nf6 (15.c4!?=) 15...gf6-/+ 16.gf6 Bb7 (16...Rh3!? 17.Bh3 Ng6 18.Bc8 Rc8=+) 17.fe7= Qe7 18.Qg4 Qd7 19.Qd7 Kd7 20.Ng5 (20.d3 Rag8 21.Kf1 f5=+) 20...Rh1 21.Bh1 f6 (21...Rg8!? 22.Nh3 Rh8-/+) 22.Ne4=+ f5 (22...Rh8 23.Ke2 (23.Nf6? Ke6 24.Bd5 Kf6-+) 23...Ke6 24.Bg2=+) 23.Nf6= Ke6 24.Nd5 Bd8 25.Nc3 Na5 26.Ke2 Bh1 (26...d5 27.Bb4 Nc4 28.d3=) 27.Rh1 Rc8 (27...Nc4!? 28.Bc1 Rc8=) 28.Rh6+= Bf6 29.Bd6 Kd6? (better 29...Rh8 30.Rh8 Bh8+/-) 30.Rf6+- Ke7 31.Rf5 Nc4 32.d3 (32.f4 ef4 33.ef4 Ke6+-) 32...Na3 (better 32...Ke6!? 33.Rh5 Ne3 34.fe3 Rc3 35.Rh6 Kd7 36.Rh7 Ke6+/-) 33.Kd2+- (33.Re5 Kf6-/+) 33...b5 (33...Ke6 34.e4+-) 34.Re5 Kd6 (34...Kd7 35.Rb5 Nb5 36.Nb5+-) 35.Re4 (35.f4 Kd7 36.Rd5 Ke6 37.Rb5 Nb5 38.Nb5 a6 39.Nd4 Kf7+-) 35...a6? (better 35...a5 36.Nb5! Nb5+-) 36.Rb4 Kc5 37.Rb3 Kb6 (37...b4+-) 38.Ra3 b4 (38...Rd8 39.e4+-) 39.Rb3 a5 40.a3 Kc5 41.ab4 ab4 42.Ne4 Kb5 (42...Kc6 43.Rb4 Ra8 44.d4+-) 43.c3 (better 43.Nd6 Kb6 44.Nc8 Kc7+-) 43...Ka4 (43...Rh8 44.cb4 Rh2 45.Kc3+-) 44.Rb4 Ka3 (44...Ka5+-) 45.Kc2 Rh8 46.Nd2 (46.Nd6 Rh4 47.Nb5 Ka2 48.Rh4 Ka1 49.Ra4) 46...Rh2 (46...Ra8 47.Nb1 Ka2 48.c4 Ra3 49.d4 Ka1 50.Na3 Ka2 51.Ra4 Ka1 52.Nb5) 47.Nc4 Ka2 48.Ra4 1-0. FeegLood (2615) - worldsong (2310), lichess.org, 2015.

6.h4 Qc7 7.Nh3 b6 8.g5 hg5 9.hg5 Nd5 (9...Bb7 10.Rg1 Ne4 11.f4=) 10.Bg7+= Rg8 11.Bb2 Bb7 12.Bg2?? (12.Rg1 Nc6+/-) 12...Na6?? (better 12...Ne3 13.de3 Bg2-+) 13.Qe2?? (13.Rg1 Qh2 14.Qg4 Qc7+/-) 13...Nab4 (better 13...Ndb4 14.0-0 Bg2 (14...Nc2?! 15.d4 Bg2 16.Kg2-+) 15.Kg2 Be7=+) 14.d4 Ba6 (14...Nc3 15.Qg4 Bd4 16.ed4 Bg2 17.Qg2 Ncd5+/-) 15.c4+/- Be7 16.Na3 Rc8 (16...Bg5?? 17.Ng5 Rg5 18.Bd5 ed5 19.Bc3 Na2 20.Qa2+-) 17.Be4 (better 17.Bf1!? Nc6 18.Qc2+/-) 17...Bc4= (17...Bg5? 18.Ng5 Rg5 19.Qd2+-) 18.Nc4 Qc4 19.Qc4 (19.Rc1 Qe2 20.Ke2 Rc1 21.Rc1+= (worse 21.Bc1 Nc3 22.Kf3 Nba2-+)) 19...Rc4= 20.Kd2 f5 (20...Bg5 21.Rag1 Nf6 22.Bb1= (22.Ng5? Ne4 23.Ne4 Rg1 24.Rg1 Rc2 25.Kd1 Rb2 26.Rg8 Ke7-+)) 21.gf6 Nf6 (worse 21...Bf6 22.a3 Na6 23.Bd5 ed5 24.Nf4+/-) 22.Bb1 Rg2 23.a3 Nbd5 24.Bd3 Rc8 25.Rag1 Rg1 26.Rg1 Kf7 (26...Kd8 27.e4 Nc7 28.Nf4+/-) 27.e4 Nc7 28.e5 (28.Ng5 Kf8+/-) 28...Nfd5 29.Bg6 Kf8 30.Bc1 (better 30.Bh7!? Kf7 31.Ng5 Bg5 32.Rg5+=) 30...Nb5=+ The isolani on a3 becomes a target 31.Kd3?? (better 31.Rg3 Nd4 32.Bb2=) 31...Rc3-+ 32.Ke4 Rc1 (better 32...Rh3 33.Rg3 Rh4 34.Kd3 Ba3-+) 33.Rc1+- Nbc7 34.Kd3 (34.a4!? Ba3 35.Rh1 Ne7+-) 34...Ba3+/- 35.Rc7?? (better 35.Ra1 Nb5 36.Be4+/-) 35...Nb4?? (better 35...Nc7 36.f4 d6-/+) 36.Ke4+- Nd5 (36...Ke7 37.Rc3 Bb2 38.Rb3 Bd4 39.Kd4 Nc6 40.Ke4+-) 37.Rd7 (37.Rd7 Be7 38.Ra7+-) 1-0. FeegLood (2565) - venerius (2235), Time forfeit, lichess.org, 2015.

6.h4 d5 7.Qf3 Be7 (7...Nbd7!?=+) 8.g5+= Ne4 (8...hg5!? 9.hg5 Rh1 10.Qh1 Nfd7+=) 9.Bg7+/- Rh7 10.Bh6 Bf6? (better 10...Qb6!? 11.Qe2 Bd7+=) 11.c3+/- Qa5? (11...Qb6 12.Qe2 Ng5 13.Qb5 Qb5 14.Bb5 Bd7 15.Bd7 Nd7 16.Bg5 Bg5=) 12.Bd3+- (12.gf6?! Rh6 13.Qg4 Rg6+/-) 12...Be5 (12...Qa4 13.Be4 (13.gf6?! Rh6 14.Be4 Qe4+-) 13...Qe4 14.Qe4 (14.gf6?! Rh6 15.Qe4 de4+-; 14.Qf6? Qh1 15.Kf1 b6-+) 14...de4 15.f3+- (worse 15.gf6 Rh6 16.Na3 Rf6+-)) 13.Be4 de4 14.Qe4 Rh8 15.f4 Bd6 (15...Bf6 16.h5+- (worse 16.gf6 Rh6 17.Nf3 Nd7+-)) 16.Bg7 (16.Qd4 Rh6 17.gh6 Bf4 18.Qf4 Nc6+-) 16...Rg8 (16...Rh5 17.Ne2 Nd7 18.Ng3+-) 17.Bf6 (better 17.Qh7 Rg7 18.Qg7 Qd5+-) 17...Nd7 18.Bd4 Nf8 (18...Qb5 19.Kd1+-) 19.h5 Bd7 20.Rh4 (better 20.Qb7 Rb8 21.Qf3+-) 20...Bc6+= 21.Qc2 e5?? (better 21...Rg5!? 22.e4 Rh5 23.Rh5 Qh5=) 22.fe5 (22.Qf5 Bd7 23.Qf6 Be6 24.fe5 Be7+-) 22...Be5 (22...Rg5 23.Nh3 (23.ed6 Rg1 24.Ke2 Qg5-+) 23...Be5 24.Be5 (24.Ng5? Bg3 25.Kf1 Bh4-+) 24...Qe5 25.d4 (25.Ng5?! Qg3 26.Ke2 Qh4=) 25...Qe3 26.Qe2 Qe2 27.Ke2 Rg2 28.Nf2+-) 23.Ne2 (better 23.Re4 f6 24.Nf3+-) 23...Bd4 24.cd4 Qg5 (better 24...Rg5 25.Qc3 Qd8+/-) 25.Rf4 (better 25.Rh2+-) 25...Qh5= 26.Nbc3 (26.Rf1 Bg2 27.Rg1 Qh4 28.Kd1 Bf3=) 26...Ne6 (better 26...Bf3!? 27.0-0-0 Be2 28.Qe4 Ne6+=) 27.Rf1+= Ng5 28.0-0-0 Rc8 29.Qf5 Bd7 30.Qe5 Kf8 (30...Be6 31.Kb2 Kd8+/-) 31.Nf4 Qh6 32.Nfd5 Re8? (better 32...Qe6!?+-) 33.Qc7 Qe6? (33...Bg4 34.Rf6 (34.Qb7?! Bd1 35.Kd1 Qh3+/-) 34...Qh5 35.Rg1+-) 34.Rf6 (34.Nf6 Bc8+-) 34...Qg4 (34...Rc8 35.Qb7 (35.Re6?! Rc7 36.Re5 Rc6+-) 35...Qe8 36.Qb4 Kg7 37.Rg1+-) 35.Qc5 (better 35.Rf4!? Qe6 36.Qc5 Kg7+-) 35...Kg7 36.Rf4 Qg3 (36...Qg2 37.Nf6 Ne6 38.Ne8 Re8 39.Qe5 Kg8 40.Rh4+-) 37.Ne2 (37.Qd6 Qh3 38.Rg1 Re6 39.Qd7 Kh8+-) 37...Qg2 (37...Qh2 38.Nc7 Kh7 39.Ne8 Be8 40.Nc3+-) 38.Rg1 Qe2 (38...Qg1 39.Ng1 Rc8+-) 39.Rg5 Kh6 40.Rg8 (40.Qd6 Rg6 41.Rh4 Qh5 42.Rhh5 Kg7 43.Qf6 Kf8 44.Rh8 Rg8 45.Rhg8) 40...Rg8 (40...Qe1 41.Kc2 Ba4 42.Kb2 Rg8+-) 41.Nf6 (better 41.Rf6 Kg7 42.Rf7 Kh8 43.Rd7+-) 41...Qe1?? (better 41...Rg1 42.Kc2 Qd1 43.Kc3 Qa1 44.Kd3 Qb1 45.Ke2 Bb5 46.Kf3 Qf1 47.Ke4 Qd3 48.Kf3 Qe2 49.Ke4 Bd3 50.Ke5 Rg5 51.Kd6 Rc5 52.dc5 Qd2-+) 42.Kc2+= Rg1?? (better 42...Rc8 43.Nd7 Rc5 44.dc5 Qa1+=) 43.Qh5 (43.Qf8 Kg6 44.Qg8 Kh6 45.Qh7 Kg5 46.Qg7) 43...Kg7 44.Ne8 (44.Qh7 Kf8 45.Qh8 Rg8 46.Qg8 Ke7 47.Nd5 Kd6 48.Qf8 Kd5 49.Qc5 Ke6 50.Qe5) 44...Be8-/+ 45.Rg4 Rg4 46.Qg4 Kf8 47.Qc8 Qa1 (better 47...b6-/+) 48.Qc5= Kg8 49.Qa3?? (better 49.Qg5 Kh7 50.Qf5 Kh6 51.Qf6 Kh5 52.Qe5 Kg4 53.Qe8 Qa2 54.Kd3 Qb3 55.Ke4 Qc2 56.d3 Qg2 57.Ke5=) 49...a6-+ 50.d5 Qe5 51.Kd3? (51.Qb3 Bb5 52.Kc1-+) 51...Qd5 52.Ke2 Bc6 53.Qe7 Qc4 (53...Qa2?! 54.Qg5 Kf8 55.Qd8 Be8 56.Qd6 Kg7 57.Qe5 Kg6 58.Qe4 Kf6 59.Qe8 Qc4 60.Kd1-/+) 54.Kf2 Qa2 55.Ke2 (55.Qg5 Kf8 56.Qd8 Be8 57.Qd6 Kg8 58.Qg3 Kh7 59.Qh4 Kg6 60.Qe4 Kf6 61.Qe8 Qd2 62.Kf3 Qd1 63.Kf2 Qc2 64.Ke1 Qc1 65.Kf2 Qc6 66.Qh8 Kf5 67.Qh3 Ke5 68.Qh2 Ke6 69.Qh6 Ke7-+) 55...Qc4 56.Kf2 Qe6 57.Qd8 Kg7 58.Qg5 Qg6 59.Qe5 Kh7 0-1. is_er_nog_hoop (2405) - melmania (2315), 2-1 Blitz, lichess.org, 2020.

6.h4 Rg8 7.Nh3 Nc6 8.g5 hg5 9.hg5 Nd5 (9...Qb6 A) worse 10.gf6 Qb2 11.Nc3 Nb4= (11...gf6? 12.Rb1 Qa3 13.Rb3+-); B) 10.Bf6 gf6 11.gf6=) 10.Qh5 (10.c4 Nb6=) 10...g6 (10...Qb6 11.Bc3=) 11.Qh7+= Rf8? (better 11...Nce7!?+=) 12.Bg7+- b6 13.Nc3 (13.d4 Bb4 14.Kd1 Nc7+-) 13...Bb7? (better 13...Nc3 14.dc3 Bb7+/-) 14.Nd5+- ed5 15.Nf4 (15.d4 Bb4 16.Kd1 Rc8+-) 15...d4 (better 15...Qg5 16.Nd3 d4 17.Nc5 Qc5 18.Bf8 Qf8+/-) 16.Ng6 fg6?? (16...Nb4 17.Bf8 Nc2 18.Kd1 Ne3 19.fe3 Bf8+-) 17.Qg6 Rf7 18.Rh8 (18.Qe4 Re7 19.Rh8 Kf7 20.Qf5 Kg7 21.Qh7) 18...Ke7 19.Bf6 Kd6 20.Bd8 Rf6 (20...Kd5 21.Qf7 Kd6 22.Rh6 Ke5 23.f4 Ke4 24.Bg2) 21.Qf6 Kd5 22.e4! Ke4 (22...Ke4 23.Bg2 Mate attack) 23.Bg2 1-0. FeegLood (2605) - yolomcvikswag (1835), lichess.org, 2015.

5.d4 Bb4 6.Nbd2 0-0 7.a3 Ba5 8.e3 d5 (8...Ne4 9.Bd3 Nc3 10.Bc3 Bc3 11.Rb1=) 9.Be2 Ne4 10.0-0 f6 (10...Nc3 11.Bc3 Bc3 12.Rb1=) 11.Ne4+= de4 12.Nd2 f5 13.Rb1 Nc6 14.c3 h6 15.Qb3 Kh8 16.Bc4 (16.Rfd1 Bc7+/-) 16...Qe7 (16...Bc7 A) 17.Be6? Qd6 18.g3 Na5-+ (18...Qe6?! 19.d5 Qd6 20.dc6=+); B) 17.Qd1+=) 17.f3+/- Bc7 18.fe4 Na5 19.Qb4 Qb4 20.cb4 Nc4 21.Nc4 Bd7 22.ef5 Bb5 23.Rbc1 ef5 24.Rf4?? (better 24.Rf2+/-) 24...Bf4 25.ef4 Rac8 (better 25...Bc4 26.Rc4 Rac8-+) 26.Kf2?? (better 26.Nd6 Rc1 27.Bc1=+) 26...Rc4 27.Rc4 Bc4 28.Ke3 (28.Bc1 Bd5-+) 28...b5 (28...Re8 29.Kd2-+) 29.d5 Re8 30.Kd4 Bf1 (better 30...Rd8 31.Ke3-+) 31.d6 Bg2 32.Kc5 Rc8 33.Kb5 Bc6 (33...Bf1 34.Ka4-+) 34.Kc5 (34.Ka6 Rd8 35.Be5 Rd7-+) 34...Bd7 35.Kd5 Kg8 36.Be5 (36.Bd4 a6-+) 36...Kf7 37.Bd4 (37.h4 Rc2 38.b5 Ra2-+ (worse 38...Bb5 39.h5-+)) 37...g5 (37...Be6 38.Ke5-+) 38.Ke5 (38.fg5 hg5 39.Ba7 Rc3-+) 38...g4 39.Be3 (39.Bc5 Re8 40.Kd5 a6-+) 39...h5 (39...Re8 40.Kd4-+) 40.Bd4 (40.Ba7 Rc2 41.a4 Rh2-+) 40...h4 41.Bf2 (41.Ba7 h3 42.Bf2 Rc2-+) 41...Rh8 (41...Rc2!? 42.Bg1-+) 42.Kd5 (42.Ba7 Re8 43.Kd5 Re2-+) 42...a6 (42...g3 43.hg3 h3 44.Bg1-+) 43.Kc5 Ke6 44.Bd4 (44.Kb6 Kd6 45.Ka5 g3 46.hg3 h3 47.Bc5 Kc7-+) 44...g3 45.Be5 (45.hg3 Rc8 46.Kb6 Rc6 47.Ka7 hg3 48.Bg1-+) 45...gh2 46.Kd4 h1Q (46...Rc8 47.Ke3 h1Q 48.Bc3 Rc3 49.Kd2 Qc1 50.Ke2 Rc2 51.Kf3 Qa3) 47.Kc5 (47.Ke3 Qc1 48.Kf2 Qd2 49.Kf1 Bb5 50.Kg1 h3 51.Bh8 Qg2) 47...Qd5 48.Kb6 Qe5! 49.Ka7 (49.fe5 Rb8 Double attack (49...Rb8 Decoy; 49...h3 Passed pawn)) 49...Qf4 (49...Qd4 50.Kb7 Bc8 51.Ka8 Qe4 52.Kb8 Qb7) 50.Kb6 (50.b5 Qd4 51.Kb7 Bc8 52.Ka8 Qe4 53.Ka7 Qb7) 50...Qd6 51.Ka7 (51.Ka5 Qc7 52.Ka6 Ra8) 51...Ra8! 52.Kb7 (52.Ka8 Bc8 Mate attack) 52…Qc6 0-1. AlbertOOO44444 - vandameperu2 (2230), Casual Bullet game, lichess.org, 2020.

5.d4 Bb4 6.Nbd2 Ne4 7.a3 Nd2 (7...Nc3 8.Qc1 Ba5 9.e3=) 8.Nd2 Bd2 9.Qd2 0-0 10.0-0-0 (better 10.e4!?+=) 10...d5=+ 11.h4 b5 12.g4 a5 13.f4 b4 14.ab4 ab4 15.Qb4 Nc6 16.Qd2 (16.Qc3 Qc7=+) 16...Na5-/+ 17.Bg2? (better 17.e3-/+) 17...Nc4-+ 18.Qc3 (18.Qd3 Qc7 19.Rhf1 Ra2-+ (worse 19...Nb2 20.Kb2 Ba6 21.c4 Bc4 22.Qc3 Rfb8 23.Kc1-+)) 18...Rb8 (18...Ra2 19.Qb3 Qa5-+ (worse 19...Rb2 20.Qb2 Nb2 21.Kb2-+; 19...Nb2?! 20.Qa2 Nd1 21.Kd1=)) 19.Ba1? (19.Ba3 Qb6 (19...Na3?! 20.Qa3 Qc7 21.e3=) 20.Qb4 Qb4 21.Bb4 Rb4-+) 19...Qc7 (better 19...Rb5!? 20.Rh3 Qb6 21.Qb3 Rb3 22.Rb3-+) 20.e3 Bd7 (better 20...Qb6 21.Bb2 Bd7-+ (21...Qb2?! 22.Qb2 Rb2 23.Bf1 Ne3 24.Re1 Rc2 25.Kb1-+)) 21.Bf1-/+ Rfc8 (21...Rb6!?-/+) 22.Bc4=+ dc4 (22...Qd6 23.Kd2-/+) 23.Kd2 (better 23.d5 f6 24.g5 ed5 25.gf6+- (worse 25.Rd5 Qb7 26.Rdd1 Bg4-/+)) 23...Bc6?? (23...Qd6 24.d5 f6 25.Rhg1=) 24.Rhg1?? (better 24.d5 f6 25.dc6 Qc6 26.g5+-) 24...Be4 (24...Bf3 25.Rdf1 Bd5 26.h5=) 25.Rb1 (25.d5 f6 26.g5=) 25...g6 (better 25...Qd8!? 26.g5 Qd5=) 26.Rb8 Rb8 (better 26...Qb8 27.d5! e5 28.Qe5 Qe5 29.Be5 Bd5+-) 27.Rb1?? (27.d5 e5 28.Qe5 Qe5 29.Be5+- (29.fe5?! Bd5 30.Bd4 h6+=)) 27...Rb1-+ 28.Bb2 (28.d5 f6 29.Qf6 Qa5 30.Bc3 Qd5 31.Qd4-+) 28...Rb2! 29.Qb2 c3 30.Qc3 Qc3 31.Kc3 Bf3 32.g5 Kf8 (32...f5 33.Kb4=) 33.Kb3 Ke7 34.c4 Kd6 35.Kb4 Be2 36.c5 (36.Kc3!?=) 36...Kd5=+ 37.Ka5 Kc6 (37...Bg4!? 38.Kb5 Ke4-/+) 38.Kb4 Bf3 39.Ka5 Be4 40.Kb4 Bd5 41.Ka5 Bg2 42.Kb4 (42.Ka6 Be4=) 42...Bf1 (42...Kd5!? 43.Kc3 Ke4-/+) 43.Ka5 Kb7 44.Kb4 Ka6 45.Ka4 Be2 46.Kb4 Bf3 47.Ka4 Bd5 48.Kb4 Bc6 49.Kb3 Ka5 50.Kc3 Ka4 51.Kc4 Ka5 52.Kc3 Kb5 53.Kb3 Bd5 54.Ka3?? (54.Kc2 Be4 55.Kc3 Bf5=) 54...Ka5 (better 54...Kc4 55.Kb2 Kd3-+) 55.Kb2= Kb4 56.Kc2 Kc4 57.Kd2 Kb3 (57...Bg2 58.Ke2=) 58.Ke2 Kc3 59.Kf2 Kd3 60.Kg3 (60.c6 Bc6 61.d5 Bd5 62.Kg3 Ke3 63.Kg4-+) 60...Ke3 61.Kh2 (61.Kg4 Kd4 62.Kg3 Kc5-+) 61...Kd4 62.Kg1 (62.Kh3 Kc5 63.Kg4 Kd4-+) 62...Kc5 (better 62...Ke4!? 63.Kh2 Kf4 64.h5-+) 63.Kf1 Bc6 64.Ke1 Kd5 65.Kd2 (65.Kf2-+) 65...Kd4 66.Kc2 Ke4 67.Kb3 Kf4 68.Ka2 (68.Ka2 Kg4 69.Kb2-+). AlbertOOO44444 - vandameperu2 (2230), Casual Bullet game, lichess.org, 2020.

5.e3 0-0 6.Nc3 d5 7.Rg1 a6 8.g4 Ne4 9.Ne4 de4 10.Ne5 f6 11.Nc4 b5 12.g5 f5 13.Ne5 White prepares g6 13...Qc7 14.g6 h6 15.Nf7 Nd7?? (better 15...Qh2 16.Rg3 Re8=) 16.Qh5+- Be7?? (16...e5 17.Nh6! gh6 18.Qh6 Nf6+-) 17.Qh6!! Rf7 (17...gh6 18.Nh6 Mate attack) 18.Qh7 Kf8 19.Qh8 1-0. is_er_nog_hoop (2375) - gladius2009 (2420), Hourly SuperBlitz Arena, lichess.org, 2020.

5.e3 Nc6 6.d4 Be7 7.Be2 d5 8.c4 dc4 9.Bc4 a6 10.Nbd2 b5 11.Bd3 Bb7 12.0-0 Nb4 13.Be2 0-0 14.a3 Nbd5 15.h3 h6 16.Rc1 Rc8 17.Qb3 Bd6 18.e4 Nf4 19.Rfe1 Ne4 20.Ne4 Be4 21.Qe3 Bb7 22.Bf1 Qb6 23.Rcd1 Bd5 24.Nd2 Ng2 25.Bg2 Bg2 26.Kg2 Qc6 27.Nf3 Qc2 28.Rd2 Qg6 29.Kf1 Qh5 30.Ne5 f6 31.Ng4 e5 32.de5 Be5 33.Be5 fe5 34.Qe5 Qh3 35.Kg1 Qg4 36.Qg3 Qg3 37.fg3 Rc3 38.Kg2 Ra3 39.Re6 Kh7 40.Re7 Rff3 41.Rdd7 Rg3 42.Kf2 Rg6 43.Rc7 h5 44.Ke2 Kh6 45.Kf2 b4 46.Rb7 a5 47.Re5 Rc6 48.Rbb5 Rc2 49.Re2 Re2 50.Ke2 b3 51.Kd2 a4 52.Kc1 Ra2 53.Rb4 g5 54.Rb6 Kg7 55.Rb5 Kg6 56.Rb4 h4 57.Rd4 Kh5 58.Rb4 h3 59.Rb8 g4 60.Rh8 Kg5 61.Rg8 Kf4 62.Rf8 Kg3 63.Rh8 h2 64.Rh6 Kg2 65.Rh4 h1Q 66.Rh1 Kh1 67.Kb1 a3 68.Kc1 b2 69.Kb1 Ra1 70.Kc2 Rc1 71.Kd3 b1Q 72.Kd4 Qb3 73.Ke4 Rc4 74.Ke5 Qb5 75.Ke6 Rc6 76.Ke7 Qb7 0–1. amirgloo (1905) – Gogochari69 (1910), lichess.org, 2020.

5.e3 d5 6.d4 Bd6 7.Bd3 Ne4 8.Nbd2 f6 (better 8...Qb6!? 9.Rb1 Qa5=) 9.Ne4+/- de4 10.Be4 0-0 11.0-0 f5 12.Bd3 Nc6 13.Qe2 Bd7 14.c4 Rc8 (14...b6 15.Rab1+/-) 15.a3 Bb8 16.Rab1 Re8 17.Bc3 b6 18.Qc2 g6 (18...Bd6 19.e4+/-) 19.e4 (19.Qb3 e5 20.c5 Be6+-) 19...e5 20.ef5 (20.d5 Nd4 21.Bd4 fe4 22.Ne5 ed3+/-) 20...ed4+/- 21.Nd4 (21.Ba1 Qc7 22.Rbe1 Ne5 23.Ne5 Re5 24.fg6 hg6+/-) 21...Nd4+= 22.Bd4 Bf5 (22...Qh4 23.f4 Bf4 24.h3+=) 23.Bf5+/- Qd4? (better 23...Qd6 24.g3 gf5+/-) 24.Bc8+- Rc8 25.Rfd1 Qf4 (25...Qe5 26.g3 Bd6+-) 26.Qd2?? (better 26.g3 Qf8 27.Rd7+-) 26...Qh2= 27.Kf1 Qh1 28.Ke2 Qg2 (better 28...Re8!? 29.Kd3 Qg2=) 29.Qd5+/- Qd5 30.cd5 Rc3 (30...Bd6 31.Rb3+=) 31.Rbc1 (31.d6 Rc8+-) 31...Rc1+/- 32.Rc1 Bd6 33.Rc6 Ba3 34.d6 (34.Rc8!? Kg7 35.Rc7 Kg8 36.Ra7+/-) 34...Kf7+= 35.Kd3 (better 35.Rc7 Ke6 36.d7+=) 35...Ke6-/+ 36.Rc7 Bd6 (36...Kd6?! 37.Ra7 Bc5 38.f3=) 37.Ra7 h5 38.Rb7 Bc5 39.f3 (39.f4 Kf6=) 39...Kf5 (39...Ke5 40.Rg7 Kf4 41.Rf7 Kg3 42.Ke4-/+) 40.Rf7 Kg5 41.Ke4 (41.f4 Kh6 42.Ke4 Bf2=) 41...h4 (41...Kh6!?=+) 42.f4= Kg4 43.Rg7 Kh5 44.Kf3 g5? (44...Kh6!? 45.Rd7 g5=) 45.Rg5+= (45.fg5?! Bd4 46.Rg8 Bb2+=) 45...Kh6 46.Kg4 h3 47.Kh3 Be7 48.Kh4?? (better 48.Rb5 Bc5 49.Kg4+-) 48...Bg5= 49.fg5 Kg6 50.Kg4 b5 51.Kf4 b4 52.Ke4 b3 53.Kd3 b2 54.Kc2 b1Q 55.Kb1 Kg5 ½-½. AlbertOOO44444 - vandameperu2 (2230), Casual Bullet game, lichess.org, 2020.

3.a3 Qa5 4.ba5 Nf6 5.e3 a6 (5...Be7 6.Qf3+-) 6.d4 b6 (6...d5 7.Nf3+-) 7.c4 (7.ab6 d6+-) 7...Be7 (7...b5 8.Qc2+-) 8.ab6 d6 9.g3 (better is 9.Qf3+-) 9...Ra7 (9...Nbd7+-) 10.ba7 0-0 11.ab8Q d5 12.Qc8 (better is 12.Nf3 Bd7 13.Qa7 Rd8+-) 12...Ne4 13.Qf8 (better is 13.Qc6 Rb8 14.Qc2 Nf6+-) 13...Kf8 14.Bg2 (14.Qa4 Kg8+-) 14...Ke8 15.Qb3 (15.Qa4 Kf8 16.Be4 de4 17.Qa6 Bd8+-) 15...f6 16.Be4 (better is 16.Qb7 Nd6 17.Qc6 Kf7 18.cd5 g6 19.de6 Kf8+-) 16...e5 17.Qb8 Bd8 18.cd5 f5 19.de5 g6 20.e6 fe4 (20...Ke7 21.Qa7 Bc7 22.Qc7 Ke8 23.Qd7 Kf8 24.Qd8) 21.d6 (21.Bf6 cd5 22.Qd8) 21...Kf8 (21...g5 22.Bf6 g4 23.Qd8) 22.Qd8 1–0. Slavisa2 – book2, caissa.com, 2004.

3.a3 Na6 4.e4 Nc7 5.Nf3 Nb5 (5...d5 6.ed5 Nd5 7.Nc3=) 6.Be2 e5 (6...d6!?+/–) 7.Bb5+- cb5 8.Ne5 f6?? (better is 8...Nf6+-) 9.Qh5 g6 10.Ng6! (10.Ng6 hg6 11.Qh8+-) 1–0. Wall,Bill – Mocha, internet, 2003.

3.a3 Qc7 4.e3 a5 (4...d5 5.c4=) 5.b5 f6 6.c4 c5 (6...cb5 7.Qh5 Kd8 8.Qb5+=) 7.Nf3 Nh6 8.Be2 a4 (8...Be7 9.Nc3+=) 9.Nc3+- b6 (9...Qa5 10.0-0+-) 10.Na4 Bb7 11.0-0 (11.d4 Nf5+-) 11...Bd6 12.Nc3 Ng4 13.h3 Nh6 14.d4 cd4 15.ed4 Nf5 (15...0-0 16.Re1+-) 16.Re1 0-0 17.a4 e5? (better 17...Ra5+-) 18.de5+- fe5 19.Bd3 (19.Nd5 Qd8 20.Bd3 Nh4 21.Ne5 Qg5+-) 19...Bb4 20.Qb3 Bf3 21.gf3 (better 21.Qb4!? Bb7 22.Ba3+-) 21...Bc3 (21...Bc5 22.f4 ef4 23.Nd5+-) 22.Qc3 d6 23.Be4 Nd7? (23...Ra7 24.Qd3 Ne7 25.Ba3+-) 24.Ba8 (24.Qd3!? Nc5 25.Qd5 Kh8 26.Bf5 Qe7+-) 24...Ra8 25.f4 Nc5? (25...Qb7 26.Ra3 Rf8+-) 26.fe5 Ne6 (26...Qb7 27.ed6 Nh4 28.Kf1+-) 27.ed6 (27.Qf3 Rf8 28.Qd5 Qf7 29.ed6 Ng5+-) 27...Qd6 28.Qe5 Qe5 29.Re5 (worse 29.Be5 Kf7+-) 29...Ned4 30.Bd4 (30.Rd5!? Nf3 31.Kf1 g6+-) 30...Nd4 31.c5 (better 31.Re7 Nb3 32.Rd1+-) 31...Nf3+- 32.Kg2 Ne5 33.cb6 The passed pawn on b6 quickly leads to threats 33...Nd7 34.a5 Nc5? (better 34...Rb8+-) 35.a6 h5 (35...Kf7 36.Rc1 Ra6 37.ba6 Na6+-) 36.b7 Nb7 37.ab7 Ra1 38.b8Q Kh7 39.b6 (39.Qe5!? Ra4+-) 39...Rb1 40.Qb7 Kh6 41.Qc6 g6 42.b7 h4 (42...Kh7 43.Qc7 Kg8 44.b8Q Rb8 45.Qb8 Kf7 46.Qc7 Kg8 47.Qe7+-) 43.Qe4 Rb5 44.Qf4 Kg7 45.b8Q (45.Qd4 Kh6 46.Qh4 Kg7 47.Qd4 Kh6 48.Qh8 Kg5 49.h4 Kf4 50.Qf6 Ke4 51.Qc6 Ke5 52.Qb5 Kd6 53.b8Q Ke6 54.Q8e5 Kf7 55.Qbe8) 45...Rb8 46.Qb8 g5 47.Qe5 Kg6 48.Kf3 Kh6 (48...Kf7 49.Qg5 Ke6 50.Ke4 Kd6 51.Qe5 Kc6 52.Qd5 Kb6 53.Qd6 Kb7 54.Qe7 Kb6 55.Kd5 Kb5 56.Qb7 Ka5 57.Kc5 Ka4 58.Qb4) 49.Kg4 (49.Kg4 Kg6 50.Qf5 Kg7 51.Kg5 Kg8 52.Kg6 Kh8 53.Qc8) 1–0. retiponziani (1850) – longbow (1610), ChessWorld.net, 2010.

3.a3 Ne7 4.d3 (4.Nf3 d5=) 4...d5 5.Nf3 b6 6.Nbd2 f6 7.c4 c5 (7...a5 8.e4=) 8.g3 Nbc6 9.b5 Na5 10.Bg2 dc4 11.dc4 Bd7 12.Nh4 g5? (better is 12...Rb8+/–) 13.Bf6+- (13.Ba8?! Qa8 14.e4 e5+-) 13...Qc7 (13...Rg8 14.Nhf3 g4+-) 14.Ba8 Rg8 15.Nhf3 Rg6 (15...Bg7 16.Ne4 Nc4 17.Nfg5+-) 16.Bg5 Qb8 (16...Bg7 17.Rb1+-) 17.Be4 h6 (17...Nf5+-) 18.Be7 Be7 19.Bg6 Kd8 20.0-0 (20.Qc2 Kc7+-) 20...Kc7 21.Ne5 Be8 22.Be8 Qe8 23.Ne4 Nc6 24.bc6 h5 25.Qd7 (better is 25.Qa4 a5 26.Qb5 Bd6+-) 25...Qd7 26.cd7 Bd8 27.Kg2 a5 28.Rab1 a4 29.Nf7 (29.f4 h4 30.Ng5 h3 31.Kh3 b5 32.Ne6 Kd6 33.Nd8 Ke7 34.Ndc6 Kf6 35.d8Q Kg7 36.Qg5 Kf8 37.Qh6 Ke8 38.Qh8) 29...Kd7 30.Rfd1 Ke8 31.Nd8 e5 (31...b5 32.Rb5 h4 33.Rb7 h3 34.Kh3 e5 35.Nf6 Kf8 36.Ne6) 32.Nf6 Ke7 33.Rb6 Kf8 34.Rb7 (34.Rb7 h4 35.Ne6; 34.Rd7 h4 35.Ne6) 1–0. pcmvr – nimzou (1815), net–chess.com, 2014.

3.a3 Nh6 4.Nf3 Qb6 5.e3 Nf5 6.e4 Nh6 7.Bd4 c5 (7...Qd8!?+=) 8.bc5+/– Bc5 (better is 8...Qd8!?+/–) 9.Bg7+- Ng4 10.d4 (10.Bh8?! Nf2 11.Qc1 Nh1+-) 10...Qa5 11.Qd2 Qd2 12.Nbd2 Rg8 13.h3 (13.dc5 Rg7 14.Nc4 d5 15.cd6 b6+-) 13...Rg7 (13...Be7 14.hg4 Rg7+-) 14.dc5 Nf6 15.e5 Nd5 16.Ne4 b6 17.c4 Ne7 18.Nd6 Kd8 19.Ng5! bc5 (19...Rg5 20.Nf7) 20.Ngf7 Kc7 (20...Rf7 21.Nf7 Kc7+-) 21.Ne8 Kc6 (21...Kb6 22.Ng7 Nbc6 23.Ne8+-) 22.Ng7 Ba6 (22...Kb6 23.Bd3 Ba6 24.Ne8+-) 23.Ne8 Ng6 (23...d6 24.ed6 Nd7 25.Nc7+-) 24.Nd8 Kb6 25.Rb1 Ka5 26.Nc7 Ne5 27.Na8 Nbc6 28.Nc6 Nc6 29.Nc7 Ne5 30.f4 Nc4 31.Na6 (31.Na6 Na3 32.Rb3+-) 1–0. kamret (2275) – d101 (1655), GameColony.com, 2003.

3.a4 a6 4.e3 b6 5.b5 c5 (5...Nf6 6.Nf3=) 6.Nf3 Bb7 (6...Nf6 7.Be2=) 7.Be2 h6 (7...Nf6 8.0-0=) 8.0-0+= Ne7 (8...Nf6 9.d4+=) 9.c4 (9.Na3 Nf5+=) 9...Nf5 (9...d5 10.d3+=) 10.Qc2 (10.Nc3 Be7+=) 10...Nh4 (10...ab5 11.ab5 Ra1 12.Ba1+=) 11.Nh4 (11.e4 Bd6+=) 11...Qh4 12.a5 (12.Nc3 Bd6 13.f4 0-0+=) 12...ab5= 13.ab6 Ra1 14.Ba1 d6 (14...bc4 15.Qc4 Qg5 16.Qg4=) 15.Qa2+= Qd8 (15...Nc6 16.cb5 Nd8 17.f4+=) 16.Qa7+/– Qc8 17.cb5 e5 (17...Be7 18.d3+/– (18.Bg7? Rg8-+)) 18.Na3 (18.d4 cd4 19.ed4 Nd7+-) 18...Be7 (18...Nd7!?+/–) 19.Nc4 0-0? (better is 19...Nd7+-) 20.Na5 Bg2 21.Kg2 (21.Qe7?! Bf1 22.Kf1 Qh3 23.Ke1 Qf5+-) 21...Qd8 (21...Qe8+-) 22.Nc6 Qd7 (22...Nc6 23.bc6 Qc8 24.Qe7 Qc6 25.Kh3 Qb6+-) 23.Ne7 (23.Ne7 Kh7 24.Bd3 Kh8 25.Bf5+-) 1–0. DEFFM – GuestPKRM, freechess.org, 2018.

3.a4 d5 4.e3 (---> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.a4).

3.a4 d6 4.e3 e5 5.d4 (5.Nf3 e4 6.Nd4 Nf6=) 5...e4 (5...d5 6.b5 e4 7.c4=+) 6.c4 (6.d5 Nf6 7.Nc3 Be7=) 6...d5 (6...Nf6 7.d5=) 7.b5 Bb4 (7...Nf6 8.Nd2=) 8.Nc3 (8.Bc3 Be7=) 8...Be6 (8...Qa5 9.Qb3 Nf6 10.Rb1=+) 9.Qb3 Ba5 10.0-0-0 (10.Rc1!?=) 10...Nf6 11.Ba3 (11.bc6 bc6 12.Qb7 Nbd7-/+) 11...b6 (11...dc4!? 12.Bc4 Bc4 13.Qc4 a6-/+) 12.bc6 (12.cd5 cd5 13.Kd2 Nbd7=+) 12...Nc6 (12...Bc3!? 13.Qc3 Nc6 14.cd5 Bd5=+) 13.cd5= Nd5 14.Ne4 Nf6?? (better 14...Ncb4 15.Bb5 Kf8=) 15.d5!+- Bd5? (15...Bd5 16.Nd6 Double attack (16.Nd6 Decoy); 15...Nd5 16.Nd6 Double attack (16.Nd6 Decoy)) 16.Rd5! Nd5 (16...Qd5 17.Nf6 Double attack (17.Nf6 Decoy); 16...Nd5 17.Nd6 Double attack (17.Nd6 Decoy)) 17.Nd6 Kd7 (17...Ke7 18.Nb7 Bb4 19.Nd8 Rhd8 20.Bb4 Ndb4+-) 18.Qd5 (worse 18.Nf7 Kc7 19.Nd8 Rhd8+-) 18...Qe7 (18...Bb4 19.Nf7 Kc7 20.Qc6 Kc6 21.Nd8 Rhd8 22.Bb4 Rac8+-) 19.Nb5 (19.Nb5 Ke8 20.Qc6 Qd7 21.Qa8 Qd8 22.Nc7 Kd7 23.Bb5 Kc7 24.Qa7 Kc8 25.Ba6) 1–0. GuestTWBS – GuestJHMM, freechess.org, 2020.

3.b5 Ne7 4.e3 d5 5.a4 Nd7 6.c4 (6.Nf3 Ng6=) 6...b6 7.Nf3 cb5 8.ab5 Bb7 9.Qb3 (9.d4 a5+=) 9...dc4 10.Bc4 Nd5 (10...Nc5 11.Qa3=) 11.d4+= Nc5?? (better 11...Bb4 12.Nbd2 Bd2 13.Nd2 Qg5+=) 12.dc5+- Bc5 13.0-0 0-0 14.Rd1 Qc7 15.Nbd2 Rad8 (15...Qe7 16.Ra4+-) 16.Ra7 (better 16.e4 Nf6 17.Bf6 gf6 18.Ra7 Ra8+-) 16...Ne7 (16...Ra8 17.Be5 Qe7 18.Rda1+-) 17.Be5 (better 17.Qc3!? f6 18.Nd4 Nd5 19.Ne6 Nc3 20.Bc3 Qd6 21.Nd8 Bd5+-) 17...Qc8 (17...Bd6 18.Bd6 Rd6 19.Ng5+-) 18.Rc1 Ng6 19.Bd4 Bd4 20.Nd4 Qb8 21.Rca1 Rc8 (21...Ne7 22.Qc2+-) 22.N2f3 (22.Be6 fe6 23.Ne6 Kh8 24.Nf8 Nf8+-) 22...e5 (22...Rc7 23.Qa2+-) 23.Nf5 (23.Nc6 Bc6 24.Bf7 Kh8 25.bc6 Rc6+-) 23...Bf3 (23...Rc7 24.Ng5 Rd7 25.Nf7 Rff7 26.Bf7 Rf7 27.Qe6+-) 24.gf3 Rc7 25.Ra8! Qa8 26.Ra8 Ra8 27.Nd6 Raa7 28.Nf7 (28.Bd5 Nf8+-) 28...Kf8 (28...Rf7 29.Bf7 Rf7+-) 29.Ng5 h6 (29...Ke8+-) 30.Ne6 Ke7 (30...Ke8 31.Nc7 Rc7 32.Qd3+-) 31.Nc7 Rc7 32.Bd5 (better 32.Qa3 Ke8 33.Qd6 Rc4 34.Qg6 Ke7 35.Qg7 Kd6 36.Qh6 Kc5 37.Qc6 Kb4 38.Qb6 Rc5+-) 32...Nf8 (32...Rd7 33.Qa3 Kf6 34.Qa8+-) 33.Bc6 Ne6 34.Qd5 Nc5 (34...g6 35.Qe5 Rd7 36.Bd7 Kd7+-) 35.Qe5 Kf8 36.Qc7 (36.Qe8) 36...Ne6 37.Qb6 (37.Qd6 Kf7 38.Bd5 Kg8 39.Qe6 Kh7 40.Be4 g6 41.Qg6 Kh8 42.Qh7) 37...Kf7 38.Qb8 (38.Bd5 g6 39.Qe6 Kg7 40.Qf7 Kh8 41.Qg8) 38...Kf6 39.Qd6 Kf5 (39...g6 40.Bd5 h5 41.Qe6 Kg7 42.Qg8 Kh6 43.f4 h4 44.Qh8) 40.b6 (40.b6 g5 41.Bd5 g4 42.Qe6 Kg5 43.f4 Kh5 44.Be4 g3 45.Qh3; 40.Bd7 Kg6 41.Qe6 Kh7 42.Qf7 Kh8 43.Be6 Kh7 44.Bf5 Kh8 45.Qe8) 1-0. ClayPigeons (2165) - oreol (2225), Rated Bullet game, lichess.org, 2019.

3.c3 d5 4.Qb3 Na6 (4...Nf6 5.Nf3=+) 5.d4 b5 6.Nd2 Bd6 7.e4 de4 8.Ne4 Be7 9.Nf3 f5 10.Nc5 Bc5 11.dc5 h6 (11...Qd5 12.c4 Qe4 13.Be2+-) 12.Be2 (12.c4 bc4 13.Bc4 Qe7+-) 12...Qc7 (12...Qd5 13.c4 bc4 14.Qc3+- (14.Qc4?! Qc4 15.Bc4 Nb4+=)) 13.0-0 Ne7 14.Rfe1 Rf8 (14...0-0 15.c4 bc4 16.Bc4+-) 15.Rad1 Nd5?! (15...Kf7 16.c4 bc4 17.Qc3+-) 16.a4 (better 16.Bb5!? Ne7 (16...cb5?? 17.Qd5 Rb8 18.Re6 Be6 19.Qe6 Qe7 20.Qc6 Kf7 21.Rd7+-) 17.Ba6 Ba6 18.Qe6 Bb7+-) 16...ba4 17.Qa4 Nb8 18.c4 Nf4 19.Bg7?? (better 19.Be5 Ne2 20.Re2+-) 19...Qg7-/+ The mate threat is Qxg2 (19...Ne2?! 20.Re2 Qg7 21.Ne5=) 20.g3 Nh3 (better 20...Ne2!? 21.Re2 f4-/+) 21.Kg2= Nf4 22.Kh1 (22.Kg1 Ne2 23.Re2 f4-/+) 22...Nh3 (better 22...Ne2!? 23.Re2 f4-/+) 23.Kg2= Nf4 24.Kh1 Nh3 (better 24...Ne2!? 25.Re2 f4-/+) 25.Kg2= Nf4 26.Kh1 Ne2 27.Re2 Qg4 28.Red2?? (better 28.Qb3-/+) 28...Qf3-+ 29.Kg1 Kf7 30.Rd3 Qh5 (30...Qe2 31.f4-+) 31.b5 (31.Rd8 Rd8 32.Rd8 Nd7 33.Qc6 Qd1 34.Kg2 Bb7 35.Qb7 Rd8-+) 31...cb5 (31...f4 32.Qa5 Qc5 33.Qc7 Qe7 34.Qf4 Kg7 35.Qe5 Qf6 36.Qc7 Qf7 37.Qe5 Kg8 38.f4-+) 32.Qb5 (32.cb5 e5-+) 32...Ke7 (better 32...Ba6!? 33.Qa4 f4 34.c6-+) 33.c6 Qe8 34.Rd8 (34.Rd6-+) 34...Qc6 (34...Qd8 35.Rd8 Rd8 36.c7 Rd1 37.Kg2-+) 35.Qc6 (35.Qb4 Qd6 36.Qd6 Kf6 37.Rf8 Kg6 38.Rg8 Kh5 39.Rd4 e5 40.Qg6) 35...Nc6-+ (35...Rd8?! 36.Qc5 Ke8 37.Re1=) 36.R8d6 Rd8 37.Rd8 Nd8 38.h3 Ba6 39.Rd4 Nc6 (39...Rc8 40.f4-+) 40.Rf4 (40.Rh4 Kd6-+) 40...Rd8 41.c5 (41.Kh2 Nd4 42.g4 e5 43.Rf5 Nf5-+) 41...Bb7 (better 41...Rd1 42.Kh2 Bb7 43.g4-+) 42.Ra4 (42.Kf1 Ne5 43.g4 Bf3 44.Rf3 Nf3 45.gf5 ef5-+) 42...a5 (better 42...Rd1 43.Kg2 Ne5 44.f3 Bf3 45.Kf2 Rd2 46.Ke3 Re2 47.Kd4 Re4 48.Kc3 Ra4 49.Kc2-+) 43.Kh2 (43.f4 Rd1 44.Kf2 Rc1-+) 43...Rd2 44.Rf4 (44.g4 Rf2 45.Kg3 Rc2-+) 44...Ne5 (better 44...Nd4!? 45.g4-+) 45.g4 Be4 46.gf5 Bf5 (better 46...ef5 47.Kg3-+) 47.Kg3 Rd3 (47...Rd3 48.Kh2 Rh3 49.Kg2 Rc3-+) 0–1. WarlpiriMan – Pestel, ChessWorld.net, 2009.

3.c4 b5 4.c5 a5 5.Qb3 ab4 6.Qb4 Ra4 7.Qb3 Bc5 8.Bg7 Rc4?? 9.Nc3 Bd4 10.Bh8 Bh8 11.Nf3 Bc3 12.dc3 Qf6 13.Rc1 Na6 14.e3 Rc5 15.Be2 Ne7 16.0-0 Rh5 17.c4 Nf5 18.cb5 Nb8 19.b6 Nd6 20.a4 Nb7 21.Ra1 Na5 22.Qc2 Ba6 23.Ba6 Na6 24.Rfd1 Rd5 25.Rab1 Nb7 26.Rd5 ed5 27.Qh7 Qd6 28.Nd4 Qa3 29.Qh8 Ke7 30.Nf5 Ke6 31.g4 Qa4 32.Qe8 Kf6 33.Qe7 Kg6 34.f4 Qc2 35.Qg5 (35.Qg5 Kh7 36.Qg7#) 1–0. colinwebb – coolerdude, ChessWorld.net, 2004.

3.c4 b6 4.e3 Nf6 5.b5 cb5 6.cb5 Be7 7.Nf3 0-0 8.Be2 h6 9.0-0 Bb7 10.Nc3 d5 11.d4 Nbd7 12.a4 (12.Qa4 Bd6+=) 12...a5 13.Qb3 Nh7 14.Rac1 Ng5 15.Nd2 Nf6 16.f4 Nge4 17.Nce4 de4 18.Nc4 Bd5 19.f5 Rb8 20.fe6 Be6 21.Rf4 Bd6 22.Rf2 Rb7 23.Ba3 Ba3 24.Qa3 Bc4 (24...Rc7 25.Ne5=) 25.Bc4+= Rb8 (25...Rc7 26.Rfc2+=) 26.Ba2+/- Qd7 27.Rc6 Qg4 28.Qd6 Qd1 29.Rf1 Qe2 (29...Qa4? 30.Bf7! Rf7 31.Qb8 Rf8 32.Rc8 Rc8 33.Qc8 Kf7 34.Qd7 Kg6 35.Qf5 Kf7 36.Qh5 Kf8 37.Qd5+-) 30.Qg3 Nh7?? (better 30...Ng4+/-) 31.Rf7!+- Qa2 (31...Rf7 32.Bf7 Double attack (32.Qb8 Deflection; 32.Qf4 Decoy; 32.Qb8 Overloading)) 32.Qg7 1-0. DEFFM – GuestLBTR, freechess.org, 2021.

3.c4 Qb6 4.a3 Qa6 5.e3 c5 6.b5 Qd6 7.Nf3 f6 8.Qc2 b6? (better is 8...a6+/–) 9.Qe4+- (9.Qe4 Nc6 10.bc6 Qc6 11.Qc2+-) 1–0. Fournier,Frederic – Chenz, Active, 2011.

3.c4 Qg5 4.Nf3 Qg6 5.b5 Bc5 (5...Nf6 6.e3=) 6.e3 f6 (6...cb5 7.cb5 d5 8.Ne5+=) 7.Be2 (7.d4 Be7+/–) 7...h5 (better is 7...cb5!? 8.cb5 d5+=) 8.0-0+/– Ne7 (8...Be7 9.Nc3+/–) 9.Nh4 Qf7 10.d4 Kd8?? (better is 10...Bb6+/–) 11.dc5+- g6 (11...e5 12.f4 ef4 13.ef4+-) 12.f4 Nf5 13.Nf5 gf5 14.Qd4 Rh6 15.Nd2 a6 16.a4 d5 (16...Ke8 17.e4+-) 17.Bc3 (better is 17.cd6!? h4+-) 17...Nd7 (17...Ke8 18.Nf3+-) 18.Ba5 Ke8 19.bc6 bc6 20.cd5 ed5 21.Nf3 Kf8 (21...Qe7 22.Bb6+-) 22.Bd3 (22.Nh4 Qh7+-) 22...Nb8 (22...Ke8 23.Rae1 Qh7 24.e4 fe4 25.Be4 de4 26.Re4 Kf8 27.Qd6 Kg7 28.Re7 Kh8 29.Rh7 Rh7 30.Rb1+-) 23.Nh4 Ra7 (23...Qh7 24.Rab1 Be6 25.Qb4+-) 24.Bf5 Bf5 25.Nf5 Rg6 26.g3 (26.e4 Qe6 27.Ng3 Qf7+-) 26...Qg8 (26...Qe6 27.Nd6 Rg4 28.Rae1+-) 27.Rf2 (27.e4 Rh7 28.Rab1 Nd7 29.ed5 Qd5 30.Qd5 cd5+-) 27...h4 (27...Qe6 28.Qd3 Ra8 29.Bc7+-) 28.Rg2 (28.Nh4 Rh6+-) 28...h3 (28...hg3 29.Ng3 Kf7 30.Bc3+-) 29.Rb2 Rh7 (29...Nd7+-) 30.Rb8 Kf7 31.Nd6 Ke6 32.Rg8 (32.f5 Ke7 33.Rb7 Kf8 34.fg6 Qg6 35.Rh7 Qg5 36.Rf7 Kg8 37.Rb1 Qg3 38.hg3 h2 39.Kh2 f5 40.Rb8) 32...Rg8 33.Qd3 Rg3 34.hg3 h2 (34...Rd7 35.Qf5 Ke7 36.Qh7 Ke6 37.Qg8 Ke7 38.Qe8) 35.Kh1 Rh3 (35...Ra7 36.Qf5 Ke7 37.Qh7 Ke6 38.Qg8 Ke7 39.Qe8) 36.Qf5 Ke7 37.Qh3 (37.Qh3 d4 38.Qh7 Ke6 39.Qf7; 37.Qg6 Rg3 38.Qe8) 1–0. GuestPLLF – GuestGHTS, freechess.org, 2018.

3.c4 h6 4.e3 Na6 5.a3+= Nc7 6.Nf3 a6 (6...Nf6 7.d4+=) 7.Be2 d6 8.0-0 b5 9.d3 Nf6 10.Nbd2 Be7 11.h3 (11.Nd4 Qd7+=) 11...0-0 12.Nd4 Bb7 (12...Qe8 13.Bf3 Bd7 14.N4b3+=) 13.Bf3+= d5 14.N4b3 bc4 15.dc4 Rc8 16.Na5 Ba8 17.Rc1 (17.c5 Nd7+=) 17...Qd7 (17...c5 18.bc5 Bc5 19.Ndb3+=) 18.cd5 (18.Bd4 Rfd8+/–) 18...cd5+= 19.Qe2 Nb5 20.Nab3 Nh7 21.Nc5 Qd8 (21...Bc5 22.bc5 Ng5 23.Bh5+=) 22.a4 Bc6 (better is 22...Nc7!?+=) 23.Na6 Na7 24.b5 Bb7 25.Rc8 (25.Bd4 Ba6 26.Ba7 Ra8+-) 25...Bc8 (25...Nc8 26.e4+/–) 26.Rc1 (26.Bd4!? Ba6 27.Ba7+- (27.ba6?! Nc6+=)) 26...Ba6+/– 27.ba6 Bf6 28.Ba3 Be7 29.Be7 Qe7 30.Nb3 (30.e4!? d4 31.e5+/–) 30...Qa3 (30...Qa3 31.Qd1 Qa4+=). GuestMKCQ – GuestGCQL, freechess.org, 2017.

3.e3 a6 4.Nf3 h6 5.Be2 d5 6.d3 Nf6 (6...Bb4 7.Nfd2=+) 7.0-0 (7.Qd2 a5 8.ba5 Qa5=) 7...Bd6 (7...Bb4!? 8.Nbd2 Nbd7=+) 8.a3= Nbd7 9.c4 Bb8 (9...e5 10.Nc3=) 10.Qc2 (10.Qd2 e5=) 10...g5 (10...e5!?=) 11.Nbd2 g4 12.Nd4 Qc7 13.g3 h5 14.cd5 ed5 15.Nf5 Ne5 (15...Rh7 16.e4+-) 16.f4 Bf5? (better 16...gf3 17.Nf3 Neg4 18.Ng7 Kd7 19.Ne5 Ne5 20.Rf6 Kd8+-) 17.fe5+- (17.Be5?! Qe7 18.e4 Bd7+= (worse 18...Be5 19.fe5 Qe5 20.ef5+-)) 17...Nd7? (17...Qd7 18.Nb3 h4+-) 18.Rf5 Qb6 (18...h4 19.Nf1+-) 19.Bd4 Qd8 20.Raf1 Rf8 (20...Rh7 21.e4+-) 21.Rh5 b6 (21...a5 22.Bc5 Ba7+-) 22.Qc6 Bc7 23.e6 fe6 24.Bg4 Rf1 (24...Be5 25.Be5 Rg8 26.Rh7 Rg6 27.Rh8 Rg8 28.Rg8 Ke7 29.Qe6) 25.Kf1 Qe7 (25...Qh4 26.Qe6 Qe7 27.Rh8 Nf8 28.Qc6 Kd8 29.Qa8 Bb8 30.Qb8) 26.Rh8 (26.Rh8 Qf8 27.Bf6 Qh8 28.Qe6 Kf8 29.Qe7 Kg8 30.Be6) 1–0. Pierre – VerianM, internet, 2020.

3.e3 Bb4?? 4.Bg7+- Qc7 (4...d5 5.Bh8 Nf6 6.Nf3+-) 5.Bh8 f6 (5...Be7+-) 6.Qg4 Ne7 7.Qb4 (7...f5 8.Qh4+-) 1–0. Wall,Bill – Chezzter, internet, 2003.

3.e3 c5 4.b5 (4.bc5 Nf6+=) 4...a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa5 (7...d5 8.c4=) 8.Bc3+= Qa2 9.Nf3 d5 10.Be2 c4 (10...f6 11.0-0+=) 11.0-0 Ba3?? (better 11...f6+=) 12.Bg7+- 1-0. DEFFM – Guestkamali, freechess.org, 2021.

3.e4 Na6 4.a3 Nc7 5.d4 (5.Nf3 a5=) 5...d5 6.e5 a5 7.c3 Ne7 8.Nf3 Ng6 9.Nbd2 a4 (9...Be7 10.Nb3=) 10.h4+= Be7 11.h5 Nf8 12.h6 g5 13.g3 (13.Qc2 Ng6+=) 13...b6 14.Bd3 Ba6 15.Ba6 (15.c4 dc4 16.Nc4 Nd5+=) 15...Ra6 16.Kf1 (16.c4 dc4 17.Nc4 Ng6=) 16...Rg8 (16...Ng6 17.c4=+) 17.Nh2 c5 18.bc5 (18.Kg2 c4=) 18...bc5 19.Rc1 Qb8 20.Rb1 Qa7 (20...Qb5 21.Kg2=) 21.Ng4 Nd7 22.Nf3 (22.Kg1 cd4 23.cd4 Rc6=) 22...Rb6 23.Qc2 Rg6 24.Kg2 ½-½. OnlyPolishOpening (2465) - barquero (2055), lichess.org, 2021. (=1.e4 e6 2.b4 c6 3.Bb2)

3.e4 b6 4.Nf3+= (4.a3 d5 A) 5.e5 a5 (5...Nh6 6.Nf3 Be7 7.Be2 a5 8.b5 0-0; 5...Be7 6.Qg4 Bf8 7.Nf3 a5 8.b5 Nh6; 5...Ba6 6.Ba6 Na6 7.Nf3 Nc7 8.0-0 a5; 5...Ne7 6.Nf3 Nf5 7.Bd3 Be7 8.Nc3 0-0) 6.b5 Bd7 7.Nc3 Nh6 8.Nf3 Be7; B) 5.ed5 ed5 6.Nf3 Be6 7.Bd3 Nf6 8.Qe2 Be7; 4.Qe2 d5 (4...Ba6 5.c4 d5 6.b5 cb5 7.cb5 Bb7 8.ed5 Bd5) A) 5.b5 de4 6.Qe4 Nf6 7.Bf6 Qf6 8.d4 Qe7; B) 5.a3 de4 (5...Ba6 6.d3 de4 7.Qe4 Nf6 8.Qf3 Bb7) 6.Qe4 Nf6 7.Qf3 a5 8.b5 Bb7; C) 5.ed5 cd5 6.a3 Nf6 7.Nf3 Bd6 8.Nc3 0-0; 4.Qf3 A) 4...Bb7 A1) 5.Nh3 d5 (5...Nf6 6.e5 Nd5 7.a3 a5 8.c4 Ne7; 5...a5 6.ba5 Ra5 7.Be2 Nf6 8.e5 Nd5) 6.ed5 Qd5 7.Qd5 cd5 8.a3 Nd7; A2) 5.Bd3 Nf6 6.e5 Nd5 7.a3 c5 8.bc5 bc5; A3) 5.Ne2 Nf6 (5...a5 6.ba5 Ra5 7.Ng3 d5 8.ed5 Qd5; 5...d5 6.ed5 Qd5 7.Qe3 Qd8 8.a3 Nf6; 5...a6 6.Ng3 d5 7.a3 c5 8.bc5 bc5) 6.e5 Nd5 7.a3 a5 8.c4 Ne7; A4) 5.Be2 d5 (5...Qh4 6.g3 Qe7 7.a3 d5 8.Nc3 d4; 5...Qe7 6.a3 d5 7.ed5 cd5 8.Qf4 f6; 5...Nf6 6.e5 Nd5 7.a3 a5 8.c4 Ne7; 5...a5 6.ba5 Ra5 7.Nh3 Nf6 8.e5 Nd5) 6.ed5 cd5 7.a3 Nf6 8.Nh3 Bd6; A5) 5.a3 a5 (5...d5 6.ed5 cd5 7.Bb5 Nc6 8.Ne2 Nge7) 6.b5 d5 7.bc6 Bc6 8.ed5 Bd5; B) 4...a6 B1) 5.Bd3 d6 (5...d5 6.a3 Nf6 7.Ne2 de4 8.Be4 Ne4; 5...Bb7 6.a3 a5 7.ba5 Ra5 8.Qg3 Rg5) 6.Ne2 e5 7.0-0 Nf6 8.Qg3 Nbd7; B2) 5.Nh3 d5 (5...d6 6.Bc4 d5 7.Bd3 Qd6 8.ed5 ed5) 6.Bd3 d4 7.e5 Bb7 8.0-0 Qd7; B3) 5.Qg3 Nf6 (5...f6 6.Nf3 e5 7.Bd3 Ne7 8.0-0 Ng6) 6.e5 Ne4 7.Qf4 f5 8.d3 Ng5; B4) 5.a3 d5 6.Bd3 Nf6 7.Ne2 de4 8.Be4 Ne4; C) 4...d5 C1) 5.ed5 ed5 (5...cd5 6.a3 a5 7.ba5 Ra5 8.Bc3 Ra8) 6.a3 Ne7 7.Bd3 Qd6 8.Ne2 Nd7; C2) 5.Bd3 Nf6 6.ed5 ed5 7.Qe2 Be6 8.f4 Qe7; 4.c4 A) 4...a5 A1) 5.b5 cb5 (5...d5 6.cd5 ed5 7.ed5 cd5 8.Nf3 Nd7; 5...Nf6 6.e5 Ne4 7.Qf3 f5 8.Nc3 Nc3) 6.cb5 Ne7 7.Nf3 d5 8.Bd3 Nd7; A2) 5.ba5 Ra5 6.Nc3 Nf6 7.Nf3 d5 8.ed5 ed5; B) 4...Qe7 B1) 5.b5 d5 (5...Bb7 6.Nc3 d5 7.Qc2 d4 8.Nce2 e5; 5...cb5 6.cb5 Bb7 7.Nc3 d5 8.e5 Nd7) 6.e5 dc4 7.Bc4 a6 8.bc6 Nc6; B2) 5.a3 d5 (5...Bb7 6.Be2 d5 7.ed5 cd5 8.Nf3 dc4) 6.d3 a5 7.Nd2 Bb7 8.ba5 Ra5; C) 4...d5 5.ed5 (5.cd5 ed5 6.ed5 Qd5 7.Qe2 Ne7 8.Nc3 Qe6) 5...ed5 (5...cd5 6.cd5 ed5 7.Nf3 Qe7 8.Qe2 Bg4) 6.cd5 Qd5 7.Qe2 Ne7 8.Nc3 Qe6) 4...Nf6 (4...d5 5.ed5 ed5 6.b5 Qe7 7.Be2 cb5 8.Nc3 a6) 5.e5 Nd5 (5...Ne4 6.d3 Ng5 7.a3 Nf3 8.Qf3 Bb7; 5...Nh5 6.a3 a5 7.b5 Bb7 8.Nc3 Nf4) 6.a3 Be7 (6...d6 7.Nc3 de5 8.Ne5 Bd6) 7.c4 Nc7 (7...Nf4 8.h4 h5) 8.d4 0-0 (8...d5+=) 9.Bd3 d5 10.ed6 Bd6 11.0-0 f5 (11...Bb7 12.Qc2 h6 13.Nbd2+/–) 12.Re1 (12.Qe2 a5 13.c5 bc5 14.bc5 Bf4+/–) 12...c5+= 13.dc5 bc5 14.bc5 Bc5 15.Nc3 Bb7 16.Na4 Bb6 (16...Nd7 17.Bc2+=) 17.Be5 (17.Nb6 ab6 18.Qe2 Nd7+/–) 17...Nc6 (17...Nd7 18.Nb6 ab6 19.Bd6+=) 18.Bc7+/– Qc7 19.Re6 (19.Nb6!? ab6 20.Re6+/–) 19...Nd4+= 20.Nb6 Ne6 (20...Nf3 21.gf3 ab6 22.Qb3+=) 21.Na8 Ba8 22.Rc1 (22.Ne1 Nc5+=) 22...Nf4 (22...Rd8 23.Qe1 Nf4 24.Bf5 Bf3 25.gf3+=) 23.Bf1+/– Bf3 (23...Rd8!? 24.Qb3 Qb6+/–) 24.Qf3+- (24.gf3?! Rf6=) 24...Ne6 (24...Ng6 25.c5+-) 25.Qd5 Qf7 26.c5 Nc7 (26...Rd8 27.Qb3 Nd4 28.Qf7 Kf7 29.Ba6+/–) 27.Qb7 Nd5? (27...Qd7 28.Qa7 Ra8 29.Qb6+-) 28.c6 (better is 28.Qf7 Rf7 29.Rd1 Nb6 30.cb6 Rb7+-) 28...Qb7 (28...Nb6 29.c7 Qe6+-) 29.cb7 Nb6 30.Bc4 Kh8 31.Be6 (31.Be6 Rb8 32.Rc8 Nc8 33.bc8Q (33.Bc8?! Kg8=) 33...Rc8 34.Bc8+-) 1–0. Dlugolecki,Grzegorz – Leyun,Fernando, Eclipse Email, 2000.

3.e4 Qb6 4.a3 Nf6 (4...a5 5.Nf3=) 5.e5+= Ng4?? (better is 5...Nd5+=) 6.h3?? (better is 6.Qg4 c5 7.b5+-) 6...Qf2 0–1. b4_player – sandip6, GameColony.com, 2002.

3.e4 d6 4.h3 Nf6=+ 5.Nc3 b5 6.Nf3 Bb7 7.a4 a6 8.Bd3 Nbd7 9.0-0 Be7 10.Qe2 0-0 11.e5 de5=+ 12.Ne5 Ne5 13.Qe5 Bd6 14.Qe2 Re8 15.Ne4=+ Ne4 16.Be4 f5=+ 17.Bf3 Bc7 18.d4 Qd6 19.g3 Qb4=+ 20.Rfb1 Qe7 21.Bc1 Rab8 22.Ba3 Bd6 23.Rb3 Ba3 24.Raa3=+ e5 25.Re3? e4-+ 26.Bg2 c5 27.c3 c4 28.Ra2 Bd5 29.f3 Qb7 30.Rb2 Kf7 31.h4 ef3-+ 32.Bf3 Re3 33.Qe3?? Bf3 34.Rf2 Bg4 35.a5 Re8 36.Qd2 Qc7 37.Qa2 Qg3 38.Kf1 Bh3 39.Rg2 Qd3 40.Kg1-+ Qe3 41.Rf2 Qg3 42.Rg2 Re1# 0–1. gordiemac – urko, ChessWorld.net, 2009.

3.e4 f6 4.Nf3 Bb4=+ 5.c3 Be7 6.d4 g5 7.Bc4 h5 8.0-0 g4 9.Nh4 f5 10.Ng6 Rh6 11.Ne7 Qe7 12.ef5 h4? 13.fe6 de6? 14.Qg4+- Rh8 15.Nd2 Nf6 16.Qg6 Kd8?? 17.Rfe1 Rg8 18.Qd3 Qg7 19.g3 hg3 20.fg3 Qh8 21.Ne4 Ng4 22.h4 Qh6 23.Bc1 Qg7 24.Bg5 Kc7 25.Bf4 Kb6 26.Rab1 Ka5+- 27.Nd2 b5 28.Nb3 Kb6 29.Be6 Be6 30.Re6 Kb7 31.d5 Rc8 32.dc6 Nc6 33.Nc5 (33.Nc5 Kb6 34.Qb5#; 33.Qb5#) 1–0. philstar99 – Eries, ChessWorld.net, 2009.

3.e4 Qg5 4.Nf3 Qf4 5.Nc3 d5 6.d3 Bb4-/+ 7.Be2 Nf6 8.e5 Ng4 9.d4=+ 0-0 10.0-0 a6?? 11.Na4 Nd7 12.c4?? dc4 13.Nc5? c3 14.Bc1=+ Qf5 15.Nh4 Qh5 16.Bg4 Qh4 17.Be3? Nc5 18.dc5 Qe7 19.Qd6-/+ Qd7 20.Rfd1 Rd8-/+ 21.Rab1?? Ba5 22.Rb3?? Qd6 23.cd6= b5 24.Bg5 Rd7 25.Bf3 Bb7 26.Be7 b4 27.a3 c5 28.Bb7 Rb7 29.ab4 cb4 30.Kf1 Bd8 31.Bd8 Rd8 32.Rc1 Rb5 33.f4 f6 34.Ke2 fe5 35.fe5 Re5 36.Kf3 a5 37.Kf4 Rf5 38.Ke4 Rd6 39.h3 Rd2 40.g4 Rfd5 41.Rbb1 Rh2 0–1. kehrsam – jammboy, ChessWorld.net, 2009.

3.Nf3 b5 4.a4 Bb7 5.e3 c5 (better is 5...Nf6!?=) 6.bc5+/– Bc5?? (better is 6...ba4 7.d4 d6+/–) 7.Bg7+- (7.ab5?! Nf6+/–; 7.Bb5?! Nf6+/–) 1–0. Wall,Bill – WQRJ, FICS, 2011.

3.Nf3 Ne7 4.e3 d6 5.a3 e5 6.d3 f6 7.c4 Nd7 8.Be2 d5 9.cd5 cd5 10.Nbd2 Nf5 11.0-0 Ne7 12.e4 d4 13.Nb3 Ng6 14.g3 Bd6 15.Rc1 b6 16.Nfd2 Bb7 17.Nc4 Be7 18.Bh5 Bf8? (18...Bc8!?+=) 19.Qg4 (19.f4!? a5 20.f5 ab4 21.fg6 h6+-) 19...Qe7 20.Bg6 hg6 21.Qg6 Qf7 22.Qf7 Kf7 23.f4 g6?? (better is 23...Ke6+/–) 24.fe5+- Ne5 (24...Bh6 25.Rce1 b5 26.Nd6 Ke7 27.Nb7 fe5+-) 25.Ne5 Kg7 (25...Ke8 26.Ng6 Rg8 27.Nf8 Rf8 28.Rc7+-) 26.Nd7 (better is 26.Rc7 Kg8 27.Nd7 Bg7 28.Rb7 f5 29.ef5 Rh7+-) 26...Be7 27.Bd4 Bc6 (27...Rhc8 28.Nf6 Rc1 29.Nc1+-) 28.Nf6 (28.Rc6 Rac8 29.Rcf6 Bf6 30.Bf6 Kg8+-) 28...Bf6 (28...Ba4 29.Nd5 Kh6 30.Ne7 Bb3 31.Rc6 Kh5 32.g4 Kh4 33.Ng6 Kg4 34.Ne5 Kh4 35.Rf4 Kh3 36.Rf3 Kh4 37.Bf2 Kg5 38.Rf5) 29.Bf6 Kf7 30.Bh8 Ke6 31.Bf6 (31.Rc6 Ke7 32.Rc7 Kd6 33.Rfc1 Rh8 34.R1c6 Ke5 35.Re7) 31...Rf8 32.e5 (32.Rc6 Kd7 33.Rfc1 Rf6 34.Rf6 Ke7 35.Rg6 Kf7 36.Rgc6 Ke8 37.Rc8 Kd7 38.Nd4 Ke7 39.R8c7 Kf6 40.Nf3 Kg6 41.g4 b5 42.R1c6) 32...Ba4 33.Nd4 Kd5 34.Nf3 (better is 34.Ne2!? Ke6 35.Rc7 g5+-) 34...Bb5 35.Rfd1 g5 36.Ng5 Kd4 37.Ne6 Ke3 38.Nf8 Bd3 39.Rd3! Kd3 40.e6 (40.e6 Ke4 41.e7 Kf5 42.e8Q Kf6 43.Rf1 Kg7 44.Qf7 Kh6 45.Qg6) 1–0. Fournier,Frederic – Cervantes, Active, 2008.

3.g3 Bb4 4.Bg7 f6 5.Bh8 Qe7 6.Bg2 h5 7.e3 Qh7 8.Bf6 Nf6 9.Nc3 d5 10.a3 Bd6 11.Nf3 e5 12.Qe2 e4 13.Nd4 Bg4 14.f3 ef3 15.Bf3 Nbd7 16.Bg4 hg4 17.Rb1 Ne5 18.Ne6 Nf3 19.Kd1 Bg3 20.Nc7 Bc7 21.Rb7 Ne4 22.Ne4 de4 23.Qc4 Qg6 24.Rc7 Rd8 25.Qc6 Qc6 26.Rc6 Rd2 27.Kc1 Rh2 28.Rh2 Nh2 29.Re6 Kf7 30.Re4 g3 31.Rf4 Ke6 32.Rf8 Ke5 33.Kd2 Ke4 34.Ke2 Ng4 35.Rg8 1–0. Hgvanmoork (1995) – Projecttank (1910), lichess.org, 2018.

4.e3 Be7?? 5.Bg7+- Bf6 6.Bh8 Ba1? (6...Bh8 7.d4 a5+-) 7.Ba1 a5 8.ba5 Qa5 (8...d6 9.Qg4 Nf6 10.Bf6 Qf6 11.Qg8 Kd7 12.Qh7 Ra5 13.Nf3+-) 9.Nf3 (9.Qg4 Ne7+-) 9...b4 10.Bb2 ba3 11.Ba3 (11.Na3 Ba6+-) 11...Na6 (11...Ba6 12.c4+-) 12.Be2 Nc5 13.c3 Ba6 14.c4 d5 (14...Nf6 15.Bb2 Nfe4 16.Nc3+-) 15.cd5 (better 15.Qc2 Nf6 16.cd5 Nfe4 17.Bc5 Nc5 18.Ba6 Ra6 19.Qh7 cd5+-) 15...Be2 16.Qe2 Nb3 (16...cd5 17.Bc5 Qc5 18.0-0+-) 17.0-0 (better 17.de6 Qb5 18.ef7 Kf7+-) 17...Qd5 18.d4 Na5 (18...Nf6 19.Ne5+-) 19.Nc3 (better 19.Ne5 Nf6 20.Nc3+-) 19...Nc4 (19...Qb3 20.Bb2 Nc4+-) 20.Nd5 cd5 21.Bc5 Na5 22.Ra1 (22.Qb5 Nc6 23.Qc6 Kd8 24.Qa8 Kd7 25.Ne5 Kc7 26.Qc6 Kd8 27.Nf7) 22...Nf6 23.Ne5 Ne4 (23...Rb8 24.Qf3 Nc6 25.Qf6 Rb1 26.Rb1 Ne5 27.Qe7) 24.Qh5 (24.Qb5 Nc6 25.Ra8) 24...Nf6 25.Qf7 Kd8 26.Qf6 (26.Bb6 Kc8 27.Qc7) 26…Kc7 (26...Kc8 27.Qe6 Kb8 28.Rb1 Nb3 29.Rb3 Kc7 30.Qd7) 1–0. SieStein – daredevil8888, lichess.org, 2019.

4.e4 h5 5.c4 Ba6 6.c5 f6 7.Be2 g6 8.Nf3 h4 9.d4 g5 10.Qd2 Qe7 11.Nc3 Bh6 12.Qc2 Bg7 13.e5 Nh6 14.h3 f5 15.Bc1 f4 16.Qg6 Nf7 17.Qg7 Bb7 18.Ne4 Na6 19.Nfg5 Qf8 20.Nd6 Nd6 21.Qf8 Rf8 22.Bh5 Nf7 23.Bf7 Rf7 24.Nf7 Kf7 25.Bf4 Rh8 26.Bg5 Nc7 27.0-0-0 Nd5 28.Bd2 Rh5 29.g3 hg3 30.fg3 Ne7 31.g4 Rh7 32.Rdf1 Ke8 33.h4 Nd5 34.g5 Ne7 35.h5 Nf5 36.g6 Rh8 37.h6 Kf8 38.g7 Black resigned 1–0. themuttsknutts – pads (1680), ChessWorld.net, 2011. (=1.a3 e6 2.b4 c6 3.Bb2 b5)

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.a3).

4.e3 b6 5.Nf3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 b6).

4.e3 Nf6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6 5.a3).

4.Nf3 Nf6 5.e3 c5 6.bc5 Bc5 7.d4 Bd6 8.c4 Nc6 9.c5 Bc7 10.Nc3 e5 11.Nb5 e4 12.Nc7 Qc7 13.Ne5 h5 (13...0-0 14.Be2=) 14.Nc6 bc6 15.Be2 (15.Bc3 Rb8=) 15...a5 16.Bc3 Bg4 17.h3 Be2 18.Qe2 Rb8 (18...0-0 19.0-0=) 19.0-0 (better 19.Qa6+/-) 19...Ng4? (better 19...0-0+=) 20.hg4+- hg4 21.g3 f5 (21...Rb3 22.Rfc1+-) 22.Kg2 (22.Qa6 Qd7+-) 22...Qf7 (22...Qa7+-) 23.Rh1 Rg8 (23...Rh3 24.Qa6 Qb7 25.Qb7 Rb7 26.Ba5+-) 24.Ba5 g5 (24...Ra8 25.Bb6+-) 25.Rab1 (better 25.Qa6 Qb7 26.Qb7 Rb7 27.Rh6+-) 25...Rc8 (25...Ra8+-) 26.Qa6 f4 27.ef4 (27.Qc8 Ke7 28.Qc7 Kf6 29.Rh6 Kg7 30.Rh7 Kh7 31.Qf7 Kh6 32.Rh1) 27...gf4 28.Qc8 Ke7 29.Qc7 Ke6 (29...Kf6 30.Qf4 Kg6 31.Rh6 Kg7 32.Qg5 Kf8 33.Rb8 Qe8 34.Qf6) 30.Qf7 (30.Qe5 Kd7 31.Qd6 Ke8 32.Rb8) 30...Kf7+- 31.gf4 Kf6 32.Kg3 Kf5 33.Rh5 Kg6 34.Rg5 Kf7 (34...Kf6 35.Rg8 Ke7 36.Rb7 Kf6 37.Bd8 Kf5 38.Rg5 Ke6 39.f5) 35.Rb7 (35.Rb7 Ke6 36.Rg8 Kf5 37.Rg5 Kf6 38.Bd8 Ke6 39.f5) 1-0. ivan__durak (2140) - jiacomo (2015), lichess.org, 2020.

4.e3 Nd7 5.Nf3 Nb6 6.c4 Nf6 7.Be2 Be7 8.d3 Bd7 9.Nbd2 Qc7 10.0-0 0-0-0 11.Qc2 Kb8 12.Rfe1 Ka8 13.d4 Rhe8 14.Bd3 g6 15.e4 Qc8? (15...c5 16.e5 Ba4 17.Qb1 de5 18.dc5+/– (18.bc5?! Nbd7+=)) 16.e5?? (better is 16.c5 Nbd5 17.ed5 Nd5 18.Ne4 dc5 19.Ne5+-) 16...de5+/– 17.de5 Ng8 18.Rad1 Rf8 19.Be4 f6 20.ef6 Bf6 21.Bf6 Nf6 22.Nb3 Ne4 23.Re4 e5 24.Ree1 (24.Re5 Bf5 25.Rd8 Rd8+/–) 24...h5? (24...Bf5 25.Rd8 Qd8 26.Qc3+=) 25.c5 (25.Ne5 Bf5 26.Qc3 Rd1 27.Rd1 Re8+/–) 25...Nd5 26.h3 (better is 26.Ne5 Bf5 27.Qc4+/–) 26...Bf5 27.Qc1 Rfe8 (27...Bh3 28.Ne5 (28.Re5? Bg2 29.Nh2 Qh3-+) 28...Bf5 29.Nd4+=) 28.Rd2 (28.Re5 Re5 29.Ne5 Re8+/–) 28...Rd7 (28...Bh3 A) 29.Ne5? Bg2 30.f4 Bh3-+; B) 29.Re5? Bg2 30.Re8 Re8-+ (30...Bf3?! 31.Rd8 Qd8 32.Rd4+=); C) 29.gh3 Qh3 30.Qd1+=) 29.Red1 (better is 29.Re5!? Re5 30.Ne5+/–) 29...Rde7 30.Na1 e4 31.Nd4 e3 32.fe3 Ne3 33.Kh1?? (better is 33.Re1+=) 33...Nd1-+ 34.Qd1 (34.Rd1 Bh3! 35.Qf4 Re4-+) 34...Be4 (better is 34...Re1 35.Kh2 Qc7 36.g3 Rd1 37.Rd1 h4 38.Nf5 gf5 39.Kh1 Qg3 40.Nb3 Qf3 41.Kg1 Rg8 42.Kh2 Qg2) 35.Nac2 Bc2 (better is 35...Qh3! 36.Kg1 Qg3-+) 36.Nc2 Re1?? (better is 36...h4-+) 37.Ne1+- Qe6 (37...g5 38.Nc2 g4 39.h4+-) 38.Nf3 (better is 38.Rd8 Qc8 39.Rc8 Rc8 40.Qd7+-) 38...Qg8 39.Re2 Re2 40.Qe2 a6 41.Qe1 Ka7 42.Qg1 g5 43.Qe1 g4 44.Ng1 gh3 45.Nh3 (45.gh3?! Qd5 46.Kh2 Qa2 47.Kg3 Qa3 48.Nf3 a5 49.ba5 Qc5+-) 45...h4 46.Qg1 Qg3 47.Qh2 (47.Qf2 Qa3 48.Qh4 a5 49.ba5 Qc5+-) 47...Qe1? (47...Qa3 48.Qf4 a5 49.ba5 Qc5 50.Qh4 Qa5+-) 48.Qg1 Qg3 49.Qh2 (better is 49.Qf2!? Qa3 50.Qh4 a5 51.ba5 Qc5+-) 49...Qa3?? (49...Qe1 50.Ng1+-) 50.Qg1?? (better is 50.Qf4 a5 51.ba5 (51.Qh4 ab4 52.Kh2 b3=) 51...Qc5 52.Qh4 Qa5 53.g4+-) 50...Qb4+= 51.Qc1 a5 52.Ng1 a4 53.Nf3 a3 54.Nd2? (54.Qc2+=) 54...Qb2?? (54...a2 55.Kh2 Qf4 56.Kh1 Qa4-+) 55.Qb2= ab2 56.Kh2 Ka6 57.Kh3 Ka5? (57...b6 58.cb6 c5 59.b7 (59.Kh4? c4 60.Nb1 Kb6-+) 59...Kb7 60.Nb1+= (60.Kh4? c4 61.Nb1 Kb6-+)) 58.Nb1?? (better is 58.Nc4 Kb4 59.Nb2 Kc5 60.Kh4+-) 58...Ka4 59.g3?? (better is 59.Kh4 Kb3 60.g4=) 59...hg3-+ 60.Kg3 (60.Kg3 Kb5 61.Kf4 Kc5 62.Ke3-+) 1–0. Fournier,Frederic (1970) – burdeos (2035), Active Blind, 2007.

4.e3 Nd7 5.Nf3 Nb6 6.d4 Nf6 7.c4 g6 8.Bd3 Bg7 9.Nbd2 0-0 10.0-0 d5 11.cd5 Nbd5 12.Ne5 Re8 13.Rc1 Re7 14.f4?? (14.Qf3 Nd7 15.Nec4 Qc7+/–) 14...Qf8?? (14...Ne3 15.Qf3 Nf1 16.Nf1-+) 15.Ndf3?? (15.Qf3 Rc7+/–) 15...Nd7?? (15...Ne3 16.Qe2 Nf1 17.Rf1-+) 16.Qc2?? (better is 16.Qd2+/–) 16...Ne5 (16...Ne3!? 17.Qf2 Nf1 18.Rf1-+) 17.fe5-/+ Bd7?? (17...Ne3 18.Qc3-/+) 18.Nd2?? (18.Rce1 f5+/–) 18...Rd8?? (18...Ne3 19.Qc3 Nf1 20.Rf1-/+) 19.Nb3?? (19.Rf3 Bh6 20.e4 Nf4+/–) 19...b5?? (19...Ne3 20.Qf2 Nf1 21.Rf1-/+) 20.Nd2?? (20.Rce1 Bh6 21.Bc1 f5+-) 20...a6?? (20...Ne3 21.Qc5 Nf1 22.Rf1-/+) 21.Nb3?? (21.Rf3+/–) 21...h5?? (21...Ne3 22.Qf2 Nf1 23.Rf1+=) 22.Nc5?? (22.Rce1 f5+-) 22...Qe8?? (better is 22...Ne3 23.Qc3 Nf1 24.Rf1 f5=) 23.Nd7 (23.Rf3!? Bh6 24.e4 Ne3+-) 23...Red7 24.Qf2 Qf8? (24...Bh6!? 25.Rfe1 Ra7+/–) 25.Rc2 Bh6 26.Rfc1?? (26.Bc1 Ne7+-) 26...Qe8 (better is 26...Be3 27.Qe3 Ne3-+) 27.Qe2?? (27.Re1 Ra7+/–) 27...Ne7?? (better is 27...Be3 28.Kf1 f6 29.ef6 Bc1 30.Bc1 Nf6-+) 28.h3?? (better is 28.Rf1+-) 28...Nd5= 29.Qf2?? (29.Kh2 Ne3 30.Rc6 Nf5+=) 29...Ne3 (better is 29...Be3 30.Qe3 Ne3 31.Rc6 Rd4 32.Bd4 Rd4-+) 30.Qe3?? (better is 30.Rc6 Nf5 31.Re1 Nd4 32.Ra6 Nf3 33.Qf3 Rd3 34.Qe4=) 30...Be3-+ 31.Kh1 (31.Kf1 Bc1 32.Rc1 f6 33.ef6 Rf7-+) 31...Bc1 32.Rc1 Ra7 (32...Rd4 33.Bd4 Rd4 34.Be2-+) 33.Rf1 (33.Be4 Rc8-+) 33...Rda8 34.Bc2 a5 35.Bc3 ab4 36.ab4 (36.Bb4 Ra3 37.Ba3 Ra3 38.Rd1-+) 36...Ra1! 37.Ba1 (37.Ba1 Ra3 Decoy; 37.Ra1 Rd8 Combination) 37...Ra1! 38.Ra1 Kg7 39.Rb1 Qh8 40.Kh2?! (40.Be4 Qd8 41.Bc6 Qb6-+) 40...g5 (40...Qh6!? 41.Rd1-+) 41.Rd1 h4 42.Be4 1–0. Fournier,Frederic (1945) – burdeos (2015), Active Blind, 2007.

(--> 1.b4 e6 2.Bb2 Nf6 3.a3 c6).

4.Nf3 (--> 3.Nf3 Nf6 4.a3).

4.c3= a5 5.Qc2 (5.b5 d5=) 5...d5+= 6.e3 (6.ba5 Ra5 7.e3 e5+=) 6...ab4-/+ 7.cb4 Nf6 (7...Qb4 8.Nf3-/+) 8.a5 (8.b5 Be7+=) 8...Qd8 (8...Qb4 9.Bc3 Qe4 10.d3-/+) 9.a6 (9.Bc3!?+=) 9...ba6-/+ 10.b5 Qb6 11.Nc3 Bb7 (11...e5 12.Nf3 e4 13.Nd4-/+) 12.Na4 Qd8 13.bc6 (13.b6 Bd6-/+) 13...Bc6 (13...Nc6 14.Nc5 Bc5 15.Qc5-/+) 14.Nc5 Bc5 15.Qc5 Qe7 16.Ba3 (16.Qa5!?+=) 16...Qc5-/+ 17.Bc5 Kd7 (17...a5 18.d4-/+) 18.Nf3+= Rc8 19.Bd4 (19.Ne5 Ke8+=) 19...Ke8 (19...Ke7 20.Bc5 Ke8 21.d4-/+) 20.Bd3 Nbd7 (20...h6 21.Ra5-/+) 21.0-0 (better is 21.Ra6!? Ra6 22.Ba6=) 21...Bb5 22.Bb5 ab5 23.Ra8 Ra8 24.Rb1 Rb8 (24...Rc8-/+) 25.Bf6-+ gf6 (25...Nf6 26.Nd4 Ra8 27.Nb5 Ra2+=) 26.Nd4= b4 27.Nc6 Ra8 (27...Rb6 28.Nb4 Ne5 29.Rb2-/+) 28.Nb4= Rb8 (28...Ne5 29.d3=) 29.Rb2 (29.d4 e5=) 29...Nc5 (29...Ne5 30.d4 Nc4=) 30.Nd3 (better is 30.d4 Ne4 31.f3=) 30...Ra8 The mate threat is Ra1 31.Ne1 Ra1 Threatening mate... how? 32.Kf1 Nd3 (32...Re1 33.Ke1 Nd3 34.Ke2 Nb2 35.d3-+) 33.Rb8 Ke7 Threatening mate: Rxe1 34.Ke2 Ne1 (34...Re1?! 35.Kd3 e5 36.g4=) 35.Rb7 Kf8 36.Rb8 (36.g4 Kg7-+) 36...Kg7 37.g3 (37.g4 Kg6-+) 37...f5 38.f4 Rc1 39.Rb2 h5 40.h4 (40.d3 Kf6-+) 40...Nc2 41.d3 Na1 (41...d4 42.ed4 Nd4 43.Ke3-+) 42.Kd2 Rg1 43.Kc3 Rg3 (better is 43...Kf6 44.Ra2 Rb1 45.Rb2 Rc1 46.Kb4-+) 44.Re2? (44.Rb1 Re3 45.Ra1 Rh3-+) 44...Rh3 (44...Rg1!? 45.Ra2 Kf6 46.Ra8-+) 45.Kb2 (45.Rg2 Kf6-+) 45...d4 46.Ka1 (46.ed4 Rh4 47.Ka1 Rf4-+) 46...Re3 47.Rd2 (47.Rg2 Kh6-+) 47...Rh3 48.Kb2 Rh4 49.Rf2 f6 (49...Rh3 50.Kc2-+) 50.Kc2 (50.Kb3 Kg6-+) 50...Kg6 (50...Rh3 51.Re2-+) 51.Rd2 (51.Kb3-+) 51...e5 (51...e5 52.fe5 fe5-+) 0–1. Zylla,Johannes – Donner, BSF–VM B–Turnier, 1994.

4.Bc3!?=.

4.e3 Qb4+= 5.Ba3 Qb6 (5...Qa4 6.Nc3 Qh4 7.Bf8 Kf8 8.Nf3-/+) 6.Bf8+= Kf8 7.Nf3 d5 8.Nc3 Qc7 9.Be2 (9.d4 c5+=) 9...Nf6 10.0-0 h5 11.d4 Ne4 (better is 11...h4!?+=) 12.Ne4+= de4 13.Ng5 g6 (13...f5!?+=) 14.Ne4+/– Nd7 15.c4 h4 16.h3 f5 (16...e5 17.c5+/–) 17.Ng5 Nf6 18.a5 Ne4 (18...e5!?+/–) 19.Ne4+- fe4 20.Qc2 Qf7 (20...e5 21.Qe4 Bf5 22.Qe5 Qe5 23.de5+-) 21.Qe4 Bd7 (21...Qf5 22.Bd3 Ke7+-) 22.Rfb1 Rb8 (22...Bc8+-) 23.Qe5 Ke7 24.Qc5 Kf6 25.Qa7 Kg7 26.Rb7 Rbf8 (26...Rb7 27.Qb7 Rf8+-) 27.Rd7 1–0. DEFFM – GuestFRRV, freechess.org, 2018.

4.Ra3 Bb4 5.Rg3 0-0 6.Na3 Bd6 7.Rf3 Be7 8.Qa1 d5 9.h4 Nbd7 10.h5 e5! 11.h6 g6 12.e3 e4 13.Rg3 a6 14.Ne2 b5 15.a5 b4 16.Nb1 c5 17.Nf4 d4! 18.Bc4 Ne5 19.Ba2 c4?? 20.Bd4+= c3?? 21.dc3?? Ned7 22.cb4 Bb4 23.Kf1 Ba5?? 24.Nh5 Bc7 25.Rg5 a5?? 26.Nf6 Nf6+/– 27.Bf6?? Ba6 28.Kg1 Qd1 0–1. xtom – krawcuandy, kurnik, 2011.

4.Ra3 Bb4 5.Rg3 0-0 6.Na3 Be7 7.Qa1 Kh8 8.h4 d6 9.f4 Nh5?? 10.Bg7+- Kg8 11.Bf8 Kf8 12.Qh8 1–0. xtom (1625) – pionas54 (1650), kurnik, 2011.

4.Ra3 Bb4 5.Rg3 Bd6 6.Rg7= e5 7.Na3 Nh5 8.Rg4 f5 9.Rc4 Ba3 10.Ba3 d5 11.Rc3 Na6 12.Qa1 d4= 13.Rh3 Nf4 14.Rh6 Qg5 15.g3? Qh6-+ 16.gf4 Qf4 17.Nh3 Qh6 18.Rg1 Be6 19.Qb2 0-0-0 20.Rg3 f4 21.Rd3 e4 22.Rb3 Bb3 23.Qb3 Rhg8 24.e3 fe3 25.de3 de3 26.Qe3 Qe3 27.fe3 c5 28.Ba6 ba6 29.Bc5 Rg2 30.Ba7 Rh2 31.Nf4 Rdd2 32.c4 Ra2 33.Bd4 Rh1 0–1. xtom – gjanari, kurnik, 2011.

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4).

4.Bf6 Qf6 5.Nc3 Bb4 6.Ne4-/+.

4.b5 cb5 5.cb5 Nf6 6.e3 Be7 (6...d5 7.Nf3=) 7.Nf3 0-0 (7...d6 8.Be2=) 8.Be2 (8.Bf6 Bf6 9.d4 d6=) 8...d5 (8...d6 9.Nc3=) 9.0-0 Bd7 10.Nc3 Bd6 11.h3 (11.Na4 Bc8+=) 11...Qe7 (11...e5 12.Rc1=) 12.a4 (12.Na4 e5=) 12...Be8 (12...Rc8 13.Rc1=) 13.d4 Nbd7 14.Nb1 Nb6 (14...Rc8 15.Ba3=) 15.Nbd2 (15.Ba3 Bd7=) 15...Rc8 (15...Bd7 16.Ne5=) 16.Rc1 (16.Qb3 Bd7=) 16...Bd7 17.Qb3 Bb4 18.Bd3 h6 (18...Rfd8 19.Nb1=) 19.Rfd1 (19.Nb1 Ne4+=) 19...g5 (19...Rc1 20.Rc1 Rc8 21.Rc8 Bc8 22.Qc2+=) 20.Rc8 Rc8 21.Ne5 (21.Rc1 g4 22.Rc8 Bc8 23.hg4 Kg7+=) 21...Bd2= 22.Rd2 Qb4 23.Qb4 ab4 24.Nd7 (24.Rc2 Ra8 25.Rc7 Na4+=) 24...Nfd7= 25.Rc2 (25.a5 Nc4 26.Rc2 Kg7=) 25...Nc4 (25...Ra8 26.Rc7+=) 26.e4 (26.a5 Kg7 27.Be2 b3=) 26...Kg7 (26...Ndb6 27.ed5 ed5 28.a5-+) 27.ed5+= ed5 28.Re2 (28.Bf5 Rd8 29.a5 Na5-/+) 28...Rc7 (28...Ra8 29.f4 gf4 30.Bc1-/+) 29.Kh2 (29.f4!?+=) 29...Ndb6-/+ (29...Nb2?! 30.Rb2 Rc3 31.Bf5+=) 30.h4 (30.a5!? Na5 31.h4-+) 30...Na4-+ 31.Bc1 gh4 (better is 31...Nc3 32.hg5 hg5-+) 32.Bc4? (better is 32.Bf4 Rd7 33.Re1-/+) 32...dc4-+ 33.Bf4 Rc8 (33...Rd7 34.d5 b3 35.d6-+) 34.Re7 (34.d5 b3 35.d6 c3-+) 34...b3 ½–½. DEFFM – GuestXQCG, freechess.org, 2016.

4.b5 f6 5.a4 Qb6 (5...d5 6.e3=) 6.e3+= Qc5 (6...e5 7.Nc3+=) 7.Nc3 h5 (7...Qe7 8.d4+/–) 8.Be2 (8.d4 Qg5+/–) 8...h4 (8...Qg5 9.Ne4 Qh6 10.c5+/–) 9.d4 Qe7 10.Bh5 Kd8 11.Bf3 g6 12.Nh3 g5 13.0-0 f5 14.Be2 g4 15.Nf4 Qf7 (15...Qf6!?+/–) 16.d5+- e5? (16...ed5 17.Ncd5 Rh6 18.Nb6+-) 17.dc6 (17.Ne6 Ke7 18.Ba3 Kf6 19.Nf8 c5 20.Bc5 Kg7 21.Bg4 Rh6+-) 17...ef4? (better is 17...bc6 18.Nd3 Bg7+-) 18.ef4 (better is 18.c7 Ke8 19.Qd4+-) 18...bc6+= 19.bc6 (better is 19.Nd5!? Rh6 20.Nb6+=) 19...Nc6-/+ 20.Nd5 Rh6 21.Nb6? (better is 21.Rb1-+) 21...Rb8 22.Nd7 (22.c5 Bc5 23.Nc4 g3-+) 22...Bd7 23.Bc3 Bg7 24.Ba5 (24.Rc1 Bc3 25.Rc3 Nf6-+) 24...Kc8 (24...Na5!? 25.Rc1-+) 25.Rb1 (25.Bd2 Ba1 26.Qa1 h3-+) 25...Rb1 26.Qb1 Na5 27.c5 (27.Rd1 Re6 28.Bd3 Ba4-+) 27...Ba4 (better is 27...h3 28.g3 Qd5-+) 28.Ba6 (28.Qb4 Bc6 29.Qa5 Qd5-+) 28...Kd8 (better is 28...Ra6 29.Qd3 Qe6-+) 29.Qb8 Ke7 30.Qc7 Bd7 (30...Kf8 31.Qa5 h3 32.Rb1-+) 31.Re1 (31.Rd1 Qe8 32.Qa5 g3-+) 31...Re6 32.Rd1 Rc6 (better is 32...Nf6 33.Qa5 Qh5-+) 33.Rd7 Kf6 34.Rf7 (34.Rf7 Kg6 35.Rg7 Kh6 36.Rh7 Kg6 37.Qf7) 1–0. GuestZNZD – GuestCWGB, freechess.org, 2017.

4.a4 b6 5.b5 (5.Qb3 Nf6=) 5...ab5 6.ab5 Ra1 7.Ba1 cb5 8.cb5 Nh6 (8...d5 9.Nf3=) 9.e3 Nf5 10.Nf3 Nd6 11.Nc3 h5 (11...Bb7 12.Na4+=) 12.Be2 Ne4?? (better is 12...Bb7+/–) 13.Ne4+- Rh6 (13...d5 14.Nc3+-) 14.0-0 Bb7 15.Qc2 h4 16.h3 (16.Be5 d6 17.Bb2 h3+-) 16...Qc7 (16...f5 17.Nc3 g5+-) 17.Qc7 (17.Qc7 Be4 18.Qb8 Ke7 19.Be5 Bf3 20.Bf3 Rh8 21.Ra1 f6 22.Bd6 Kf7 23.Ra8 f5 24.Bf8 Kf6 25.Qd8 Kg6 26.Qe8 Kh7 27.Qh5 Kg8 28.Bd6) 1–0. GuestFMFP – GuestGHTZ, freechess.org, 2018.

4.a4 Nf6 5.Qb3+=.

4.Qb3 a5 (4...d5 A) 5.c5 a5 (5...b6 6.cb6 Qb6 7.e3 Nf6 8.Bf6 gf6 9.a3 c5 10.Qc3 Nd7 11.bc5 Nc5+=) 6.a3 b6 7.Nf3 Nf6 8.Bd4 Nbd7 9.cb6 ab4 10.Qc2 Bb7 11.ab4 Ra1-/+; B) 5.e3 Nf6 (5...Nd7 6.Nf3 Ngf6 7.d4 Be7 8.Nbd2 a5 9.ba5 Qa5 10.Bd3 dc4 11.Qc4 0-0=) 6.Nf3 Be7 7.Bf6 Bf6 8.d4 a5 9.Nbd2 ab4 10.Qb4 Nd7 11.Bd3 c5=; 4...Nf6 A) 5.Nf3 d5 (5...b5 6.e3 d5 7.c5 a5 8.a4 ab4 9.d4 ba4 10.Ra4 Ra4 11.Qa4 Nfd7=) 6.e3 Nbd7 7.d4 Be7 8.c5 b6 9.Bd3 a5 10.a3 Qc7 11.0-0 Ba6=; B) 5.e3 d5 (5...b5 6.Nf3 d5 7.c5 a5 8.a4 ab4 9.d4 ba4 10.Ra4 Ra4 11.Qa4 Nfd7=) 6.Nf3 dc4 7.Bc4 b5 8.Be2 Qd5 9.Qd5 Nd5 10.a3 a5 11.ba5 Ra5=) 5.b5 (5.ba5 Nf6 (5...d5 6.e3 Nf6 7.Nf3 Ra5 8.d4 Nbd7 9.Be2 dc4 10.Bc4 Bd6 11.0-0 0-0=) 6.Nf3 d5 7.e3 Nbd7 8.Bc3 Ne4 9.d4 Nc3 10.Nc3 Qa5 11.Rb1 dc4+=) 5...a4 (5...d5 6.Nf3 Nf6 7.cd5 a4 8.Qc2 a3 9.Be5 ed5 10.e3 Bg4 11.Bb8 Rb8=; 5...Nf6 6.Nf3 d5 7.cd5 a4 8.Qc2 a3 9.Be5 ed5 10.e3 Bg4 11.Bb8 Qb8=) 6.Qc2 (6.Qd3 Nf6 7.Nf3 d5 8.Na3 Nbd7 9.Rc1 Nc5 10.Qc2 Bd7 11.Ne5 cb5=) 6...c5 (6...d5 7.cd5 ed5 8.e3= (8.a3 Ne7 9.e3 Bf5 10.Qd1 Nd7 11.Nf3 Nc5=) 8...a3 9.Be5 Nd7 10.Bf4 c5 11.Nc3 Ndf6=; 6...a3 7.Bd4 d5 8.e3 c5 9.Be5 Nd7 10.Bc3 Nb6 11.cd5 ed5=) 7.Nf3 (7.a3 d5 8.e3 Nf6 9.Nc3 d4 10.Ne4 e5 11.Nf6 Qf6=) 7...h6 (7...d5!?= 8.e3 Nf6 9.Be2 Bd6 10.0-0 Nbd7 11.Bf6 Nf6=) 8.e4+= Qc7 (8...Ne7 9.d4 cd4 10.Bd4 Qa5 11.Nc3 d6+/–) 9.Be2 Ne7 (9...d6 10.0-0 Nf6 11.Bf6 gf6+=) 10.0-0 Ng6 (10...d6 11.a3 Ng6+/–) 11.g3 (11.a3 Nf4 12.Re1 d6+/–) 11...e5 (11...d6 12.Re1+=) 12.Nc3+/– d6 13.Nd5 Qd8 14.b6 Na6 15.Qa4 Bd7 16.Qb3 h5 17.Bc3 h4 18.Ba5 hg3 19.fg3 Bh3 20.Rf2 Bg4 (better is 20...Be6!?+/–) 21.Nd4!+- Be2 (21...cd4 22.Nc7; 21...ed4 22.Nc7) 22.Nc7 (22.Qb5 Qd7 23.Ne2 0-0-0+-) 22...Nc7 23.bc7 Qc8 24.Qb5 Ke7 25.Ne2 Rh7? (better is 25...Ke6+-) 26.Nc3 Ra5 (26...Ke6 27.Nd5 Ra6 28.Nb6 Rb6 29.Qb6+-) 27.Nd5 (27.Qa5 Ke6 28.Nd5 Ne7+-) 27...Ke6 28.Qa5 Ne7 29.Raf1 f6 (29...f5 30.ef5 Kf7+-) 30.Rf6! gf6 31.Rf6 Kd7 32.Nb6 Kc7 33.Nc8 Kc8 34.Rf8 Kd7 35.Rd8 Ke6 36.Qc7 b5 37.Rd7 b4 (37...Kf6 38.Qd6 Kg5 39.h4 Kg4 40.Qe6 Kh5 41.Re7 Re7 42.Qf6 Rg7 43.Qg7 b4 44.Qg5) 38.Qd6 Kf7 39.Re7 Kg8 40.Qd8 1–0. pierre – rolmont, internet, 2010.

4.e4 A) 4...b6 A1) 5.Nf3 Bb7 (5...d5 6.ed5 ed5 7.cd5 cd5 8.a3 Bg4 9.Be2 Nf6 10.Nd4 Be2 11.Qe2 Qe7+=) 6.a3 d5 7.ed5 cd5 8.cd5 Bd5 9.b5 ab5 10.Bb5 Bc6 11.Nc3 Nf6=; A2) 5.a3 d5 (5...Bb7 6.Nf3 d5 7.ed5 cd5 8.cd5 Bd5 9.Nc3 Bc6 10.Ne5 Nf6 11.b5 Bd7+=) 6.ed5 ed5 7.cd5 cd5 8.Nf3 Bg4 9.Be2 Nf6 10.Nd4 Bc8 11.Nc3 Bd6+=; B) 4...d5 B1) 5.ed5 cd5 (5...ed5 6.Nf3 Qe7 7.Qe2 Bg4 8.Qe7 Ne7 9.Nd4 a5 10.b5 c5 11.h3 Bh5=) 6.c5 Nf6 7.Nf3 Nc6 8.a3 d4 9.Bc4 b6 10.cb6 Qb6 11.0-0 Bd6=; B2) 5.cd5 cd5 (5...ed5 6.ed5 Qd5 7.Qe2 Ne7 8.Nc3 Qe6 9.a3 Nf5 10.Nf3 Qe2 11.Be2 Be6+=) 6.ed5 ed5 7.a3 Nc6 8.Bd3 Nf6 9.Qe2 Be6 10.Bf5 Qd7 11.Bf6 gf6=.

4.Nf3 Bb4?? 5.Bg7 d5 6.cd5+-.

4.Nf3 Nf6 5.a3 d5=.

4.Bg7 Bd6 5.Bh8 f6 (5...Bc7 6.e3+-) 6.e3 Be5 (6...Qe7 7.Qh5 Qf7 8.Be2+-) 7.d4 Bd6 8.Qh5 Kf8 9.Qh7 Qe7 10.Qe7 (10.Qg6 Qf7 11.Qf7 Kf7+-) 10...Be7 11.Nd2 (better 11.Ne2 Nh6+-) 11...Nh6 12.Ne4 Kg8 (12...d5 13.Nf6 dc4 14.Bg7 Kg7 15.Ne8 Kf7+-) 13.Bf6 Bf6 (13...Bb4 14.Kd1+-) 14.Nf6 Kf7 15.Ne4 d5 (15...Ke7 16.c5 b6 17.Rb1 bc5 18.dc5+-) 16.Nd6 Ke7 17.Nc8 Kd7 18.Nb6 (better 18.Na7 Ra7 19.Nf3+-) 18...Ke7 (18...ab6 19.Nf3+-) 19.Nf3 (better 19.Na8 Nd7 20.Nf3+-) 19...ab6 20.Be2 Nd7 21.0-0 (21.h4 dc4 22.Bc4 b5+-) 21...Rg8 22.cd5 cd5 (22...ed5 23.Rfb1+-) 23.a4 Ra8 24.Rfc1 Nf5 25.h3 Kd6 26.Bd3 Ne7 27.Bb5 Nf6 (27...Nc6 28.g4+-) 28.Rab1 Ne4 29.Bd3 Nf6 (29...Nc8 30.Be4 de4 31.Ne5+-) 30.Rb6 Nc6 31.Rb7 Ra4 32.Bb5 (better 32.Rb6 Ke7 33.Rcc6 Nd7+-) 32...Nd8 33.Rb6 Ke7 34.Rc7 Kf8 35.Ba4 (35.Rb8 Ne8 36.Rd8 Ra1 37.Kh2 Rh1 38.Kh1 e5 39.Re8) 35...Ne4 (35...Nh5 36.Rb8 Nf6 37.Rd8 Ne8 38.Re8) 36.Rb8 Nd6 (36...Nf6 37.Rd8 Ne8 38.Re8) 37.Rd8 Ne8 38.Re8 1–0. BeepBeepImAJeep – abd5461 (1680), lichess.org, 2017.

4.Bg7 f6 5.Bh8 Bc5 6.e3 Na6 (6...Qe7 7.d4 Bb4 8.Nd2+-) 7.Qh5 Ke7 (7...Kf8 8.Qh7 Qe7 9.Qh5+-) 8.Qh7 Kd6 9.d4 Bb4 10.Nd2 c5 11.a3 Bc3 12.0-0-0 cd4 13.Ne4 Ke5 (13...Kc6 14.Ne2 Qf8 15.Nd4 Bd4 16.Rd4 Qa3 17.Kd1 e5+-) 14.Nf3 1–0. DEFFM – GuestNHCV, freechess.org, 2017.

4.Bg7 Qg5 5.Bh8 f6 6.Nf3 Qg6 7.Qb3 a5 (7...Be7 8.Nh4 Qg4 9.Qg3+-) 8.a3 Bc5 9.d4 Bd6 (9...Be7 10.Nc3 h5 11.c5+-) 10.Nbd2 a4 (10...a4 11.Qe3 Be7+-) 1–0. b4_player (2175) – doc_moe, GameColony.com, 2004.

4.Qb3 dc4 5.Qc4 b5 6.Qb3 a5 7.ba5 Ra5 8.Nf3 c5 9.e3 c4 10.Qc3 Nc6 11.d3?? (better 11.a3=) 11…Bb4-+ (11...Bb4 12.dc4 bc4-+) 0-1. bjoernsen (2335) - PitZampas (2320), Rated blitz game, lichess.org, 2023.

4.c5 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 Na6 8.Qb3 Nf6 9.Nf3 Be7 10.e3 0-0 11.d4 Ne4 12.Bd3 f5 13.Nc3 Qc7 14.Ne5 Bh4 15.g3 Bf6 16.Nd7?? (better is 16.f3 Be5 17.de5= (worse is 17.fe4 Bg3 18.Kd1 Bf2-/+)) 16…Bd7-+ (16...Bd7 17.Na4 e5-+) 0–1. Van Loon,W – de Laat,Piet JM, corr Netherlands, 1989.

4.c5 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 b6 8.d4 Ba6 9.Nf3 Nd7 10.Qa4 Qc8 11.g3 Ngf6 12.Bg2 Bb5 13.Qa7= bc5 14.dc5 Be7 15.Nbd2 0-0 16.Nd4 Ba6 17.0-0 Re8 18.Bb2 e5 19.Ra1 Nb8 20.N4f3 e4 21.Nd4 e3 22.fe3 Ng4 23.Bh3 Bg5 24.Nf1 h5 25.Nf3 Be7 26.Be5 Bc4 27.N1d2 Be2 28.Nd4 Bg5 29.Bf4 Bf4 30.ef4 Qd8 31.Bf1 Bf1 32.Rf1 h4 33.N2f3 ½–½. "lasker" – Al Bundy, 2009.

4.c5 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 b6 8.d4 e5 9.e3 ed4 (9...e4 10.b5=) 10.ed4 Bf5 11.Nf3 (11.Bd3 Bd3 12.Qd3 Qg5=) 11...Nf6 12.Bd3 Bd3 (12...Qe7 13.Be2=) 13.Qd3= Qe7 14.Qe3 (14.Qe2 bc5 15.dc5 Na6+=) 14...Qe3 15.fe3 bc5 16.bc5 Be7 17.0-0 (17.Nc3 Nbd7=) 17...Nbd7 18.Nc3 0-0 19.Re1 (19.Rb1 Ra8=) 19...Ra8+= 20.h3 Bd8 21.Nd2 Bc7 (21...Ba5 22.g4=) 22.Kf2 Nf8 23.Rb1 Ne6 24.Bb2 Ng5 (24...Rb8 25.Nd1+=) 25.Bc1 (25.Ke2 Rb8=) 25...h5 (25...Ra7 26.Rb4=) 26.Ke2= ½–½. Van Esbroeck,Dirk – Rosner,Dirk, e–mail SOK–99–E005A, 1999.

4.c5 b6 5.d4 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 e5 9.de5 bc5 10.bc5 Bc5 11.e3 Bb4 12.Nd2 Ne7 13.Ngf3 0-0 14.Bd3 c5 15.Qc2 h6 16.0-0 (16.Bc3 Nbc6=) 16...Bg4 (16...c4 17.Be2 Bf5 18.e4 de4 19.Nd4 Bd2 20.Qd2=) 17.h3 Bh5 18.Bc3 Bc3 19.Qc3 c4 20.Bc2 Qd7 21.e4 Rc8 22.Nd4 Nbc6 23.Nc6 Qc6 (worse 23...Rc6 24.Ba4 d4 25.Qa5+= (25.Bc6?! dc3 26.Bd7 cd2=)) 24.ed5 Nd5 25.Qd4 c3 26.Ne4 Bg6 (26...Nf4 27.Qe3 Nd5 28.Qd4=) 27.Nd6+= Rb8 28.Bg6 fg6 29.Qe4 Kh7 30.g3 (30.Re1 Rb4 31.Qc2 Rb2-/+) 30...Rb4 (30...Rb2 31.Rc1=) 31.Qd3 c2 32.Rc1 Rb2 33.Nc4 Nb4 34.Qf1 Rb1! 35.Rb1 cb1Q 36.Qb1 Qc4 37.Qe1 Nc2 38.Qd2 Nd4 39.Qe3 Nf5 40.Qe1 Qd5 41.f4 Qf3 (41...Qf3 42.Qf2 Qg3 43.Qg3 Ng3-+) 0–1. Kucharkowski,Jens – Johannes,Jan, CiF, 2003.

4.c5 b6 5.d4 a5 6.a3 Nd7 7.e3 (7.Nc3 Ngf6=) 7...ab4 8.ab4 Ra1 9.Ba1 Ngf6 10.Bd3 Be7 11.Nf3 bc5 12.bc5 Ba6 13.0-0 Bd3 14.Qd3 0-0 15.Nbd2 Qc7 16.Qa6 e5 (16...Rb8 17.Bc3=) 17.Rb1 e4 18.Ne1 Rb8 19.Bc3 Rb1 20.Nb1 Ng4 21.g3 (21.h3 Nb8 22.Qa8 Nf6+-) 21...Bd8 (21...Nb8 22.Qa8=) 22.Qa8 f5 (22...h5 23.h3 Ngf6 24.Nd2=) 23.Nd2+= Ngf6 24.Nc2 g6? (better 24...Kf7!?+=) 25.Nb3+- Qb8 26.Qb8 Nb8 27.Ba5 Ba5 28.Na5 Kf7 29.Nb4 Ne8 (29...Ke6 30.Nac6 Nc6 31.Nc6+-) 30.Kg2 g5 31.Nbc6 Nc6 32.Nc6 Ke6 33.Ne5 (33.Kf1 Nc7+-) 33...Nc7 34.f4 g4 (34...ef3 35.Kf3 Ne8 36.h3+-) 35.h4 (35.Kf2!? Ne8+-) 35...Ne8+- 36.Kf2 Ke7 37.Nc6 Kd7 38.Ne5 Ke6 (38...Ke7 39.Ke2 Ke6+-) 39.Ke1 Kf6?? (better 39...Nf6+-) 40.Kd2+- Ke7 41.Ke1 (better 41.Kc3+-) 41...Kd8 (41...Kf6 42.Nd7 Ke7+-) 42.Ke2+- Nf6 43.Nc6 Ke8 44.Nb4 Kd7 45.Kf1 Ke6 46.Kf2 Nh5 ½–½. Gerold,Guenter – Joedicke,Bernd, corr, 1997.

4.cd5 cd5 (--> 1.b4 c6 2.c4 d5 3.cd5 cd5 4.Bb2 e6).

4.e3 f5 5.Nf3 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.Nf3).

4.e3 Nf6 5.b5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4).

4.e3 Nf6 5.b5 Be7 6.a4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

4.e3 Nd7 5.d4 (5.Nf3 A) 5...d5 6.c5 (6.a3 Ngf6 7.c5 a5 8.d4 ab4 9.ab4; 6.Qc2 Ngf6 7.c5 a5 8.a3 ab4 9.ab4; 6.b5 Ngf6 7.cd5 cd5 8.Be2 Bd6 9.0-0; 6.cd5 ed5 7.Be2 Ngf6 8.b5 Bd6 9.bc6) 6...a5 7.a3 Ngf6 8.Be2 b6 9.b5; B) 5...e5 6.Be2 (6.Nc3 Ngf6 7.d4 e4 8.Nd2 d5 9.Qb3; 6.d4 e4 7.Nfd2 Ngf6 8.d5 Ne5 9.Nc3; 6.a3 Ngf6 7.Be2 e4 8.Nd4 c5 9.Nc2; 6.b5 Ngf6 7.Be2 a6 8.0-0 Be7 9.Qc2) 6...Ngf6 7.d4 e4 8.Nfd2 d5 9.c5; 5.a3 A) 5...e5 6.d4 (6.Nc3 a5 7.b5 Ngf6 8.d4 ed4 9.ed4; 6.Nf3 Ngf6 7.Be2 e4 8.Nd4 c5 9.Nc2) 6...Ngf6 7.Nd2 a5 8.Bd3 Qe7 9.b5; B) 5...a5 6.d4 (6.Nc3 ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.Nf3; 6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.d4; 6.Be2 ab4 7.ab4 Ra1 8.Ba1 d5 9.cd5; 6.Ne2 ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.Ng3) 6...ab4 7.ab4 Ra1 8.Ba1 d5 9.c5; C) 5...d5 6.Nf3 (6.d4 Ngf6 7.Nf3 Be7 8.Bd3 dc4 9.Bc4; 6.cd5 ed5 7.Nf3 Ngf6 8.Be2 Bd6 9.0-0; 6.d3 Ngf6 7.Nf3 a5 8.b5 cb5 9.cb5; 6.c5 e5 7.Nf3 e4 8.Nd4 Ne5 9.Qc2) 6...Ngf6 7.d4 Be7 8.c5 0-0 9.Bd3; D) 5...Ngf6 6.d4 (6.Be2 a5 7.Nf3 e5 8.0-0 ab4 9.ab4; 6.Nc3 Be7 7.d4 e5 8.Nf3 e4 9.Nd2; 6.Nf3 e5 7.Be2 e4 8.Nd4 c5 9.Nc2) 6...d5 7.Nf3 Be7 8.c5 b6 9.Bd3; 5.Nc3 A) 5...d5 6.cd5 (6.b5 dc4 7.bc6 bc6 8.Bc4 Ne5 9.Bf1; 6.a3 dc4 7.Bc4 Ne5 8.Bf1 Nd3 9.Bd3; 6.c5 e5 7.d4 ed4 8.Qd4 Ngf6 9.Nf3) 6...ed5 7.Nf3 Bb4 8.Nd5 Bf8 9.Nc3; B) 5...e5 6.d4 (6.Nf3 Ngf6 7.d4 e4 8.Nd2 d5 9.Qb3; 6.Be2 Ngf6 7.Nf3 e4 8.Nd4 c5 9.bc5; 6.a3 a5 7.b5 Ngf6 8.d4 ed4 9.ed4) 6...Ngf6 7.Nf3 e4 8.Nd2 d5 9.Qb3; C) 5...Ngf6 6.Nf3 (6.a3 a5 7.b5 e5 8.d4 ed4 9.ed4; 6.d4 d5 7.c5 e5 8.de5 Ne5 9.Be2; 6.Be2 d5 7.cd5 cd5 8.a3 a5 9.Qa4; 6.b5 cb5 7.cb5 d5 8.Nf3 Bd6 9.Be2) 6...e5 7.d4 e4 8.Nd2 d5 9.b5; 5.Be2 A) 5...d5 6.cd5 (6.c5 Ngf6 7.Nf3 a5 8.a3 b6 9.b5) 6...ed5 7.Nf3 Ngf6 8.b5 Bd6 9.bc6; B) 5...e5 6.a3 (6.d4 Qg5 7.Bf1 Qg6 8.Nd2 Ngf6 9.b5; 6.Nc3 Ngf6 7.Nf3 e4 8.Nd4 c5 9.bc5) 6...Qg5 7.g3 Be7 8.Nf3 Qf5 9.h3) 5...Ngf6 (5...d5 6.c5 b6 7.Nf3 Ne7 8.Bc3 a5 9.cb6; 5...a5 6.ba5 (6.b5 Ngf6 7.Nc3 e5 8.Rb1 ed4 9.ed4) 6...e5 7.Bc3 Ngf6 8.Nf3 Ne4 9.Bd3; 5...Qb6 6.a3 (6.Bc3 Ngf6 7.Bd3 Be7 8.Nf3 e5 9.Nbd2; 6.Qb3 a5 7.ba5 Qa5 8.Nd2 Ngf6 9.Ngf3; 6.Qa4 Ngf6 7.Bd3 e5 8.Nd2 d5 9.c5; 6.Qd2 Ngf6 7.c5 Qc7 8.Bd3 e5 9.Nc3) 6...a5 7.Qa4 Qc7 8.Bd3 d5 9.c5; 5...e5 6.Nd2 Ngf6 7.a3 Be7 8.e4 a5 9.Ngf3) 6.Nc3 (6.Bd3 e5 7.Nd2 e4 8.Be4 d5 9.cd5; 6.a3 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1; 6.Nf3 e5 7.de5 de5 8.c5 Qc7 9.Bc4) 6...d5 (6...Be7 7.Nf3 c5 8.a3 cd4 9.Nd4) 7.c5 b6 (7...e5 8.Nge2= (8.de5 Ne5 9.Be2) 8...e4 9.Nf4) 8.b5 (better is 8.Nf3!?= Bb7 9.a3) 8...cb5 (8...Bb7 9.cb6) 9.c6 Nb8 10.Bb5 Qc7 11.Qa4 a6 12.Rc1 Ra7 13.Qb3 Nc6?? (better is 13...Qe7 14.Bd3 Qb4+=) 14.Nd5+- Qd8? (14...ed5 15.Rc6 ab5 16.Rc7 Rc7 17.Qb5 Bd7 18.Qb6 Rc6+-) 15.Bc6 (15.Rc6?! ab5 16.Nf6 gf6+=) 15...Bd7 16.Nb6 (16.Nb6 Bc6 17.Rc6+-) 1–0. Kleinke – Laufer, corr DDR, 1979.

4.e3 e5 5.Nf3 Bg4 6.Be2 Nf6 7.h3 Bf5 8.0-0 Qd7 (8...Be7 9.Nc3=) 9.Kh2 (9.Nh4 Be6+=) 9...Be7= 10.d3 b6 11.e4 Bg6 12.Nh4 0-0 13.Ng6 fg6 14.Nd2 Qe6 15.f4 ef4 16.Rf4 Nbd7 17.Nb3 (17.d4 d5 18.c5 g5 (18...Ne4? 19.Re4 Qf7 20.Rg4+-) 19.ed5 Nd5= (19...Qd5?? 20.Rf6 Nf6 21.Bc4+-)) 17...c5 (17...d5 18.cd5 cd5 19.Kh1+=) 18.d4 (18.a3 Ne5+=) 18...cd4 (18...Ne4? 19.d5 Qh3 20.gh3 Rf4 21.bc5 dc5 22.Nd2+-) 19.Nd4 Qe5 20.g3 1–0. GuestJTHK – GuestYZWN, freechess.org, 2017.

4.e3 Nf6 A) 5.Nc3 A1) 5...Be7 6.d4 (6.Nf3 d5 7.a3 0-0 8.d4 dc4 9.Bc4; 6.Be2 d5 7.cd5 ed5 8.a3 d4 9.ed4; 6.a3 a5 7.b5 0-0 8.Nf3 cb5 9.cb5) 6...d5 7.a3 0-0 8.Nf3 Nbd7 9.c5; A2) 5...Nbd7 6.d4 (6.Nf3 e5 7.d4 e4 8.Nd2 d5 9.Qb3; 6.a3 a5 7.b5 Be7 8.Nf3 e5 9.d4; 6.Be2 d5 7.cd5 ed5 8.b5 c5 9.Nf3) 6...e5 7.Nf3 e4 8.Nd2 d5 9.Qb3; A3) 5...a5 6.b5 cb5 7.Nb5 Be7 8.Nf3 0-0 9.Be2; A4) 5...e5 6.d4 (6.Nf3 e4 7.Nd4 c5 8.Nc2 Nc6 9.d3; 6.a3 Be7 7.Nf3 0-0 8.Be2 Re8 9.0-0) 6...e4 7.d5 Be7 8.Nge2 Na6 9.a3; A5) 5...d5 6.a3 (6.Qb3 dc4 7.Bc4 Be7 8.d4 Nbd7 9.Nf3; 6.b5 Bd6 7.Nf3 0-0 8.d4 dc4 9.Bc4; 6.c5 a5 7.a3 ab4 8.ab4 Ra1 9.Qa1) 6...dc4 7.Bc4 b5 8.Be2 a5 9.ba5; B) 5.d4 B1) 5...Be7 6.Bd3 (6.Nf3 d5 7.c5 b6 8.Ne5 Nfd7 9.Nd7; 6.a3 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1; 6.Nc3 0-0 7.Nf3 a5 8.b5 d5 9.Rc1) 6...d5 7.c5 b6 8.Qa4 a5 9.Nf3; B2) 5...a5 6.ba5 Ne4 7.Qc2 Qa5 8.Nc3 Nc3 9.Bc3; B3) 5...d5 6.c5 (6.a3 a5 7.b5 cb5 8.cd5 b4 9.Bb5; 6.Bc3 Ne4 7.c5 b6 8.Nf3 Qf6 9.Qb3) 6...Be7 7.Nf3 b6 8.Ne5 Nfd7 9.Nd7; C) 5.Be2 C1) 5...e5 6.d4 (6.a3 Be7 7.Nf3 e4 8.Nd4 c5 9.Nc2) 6...e4 7.Nc3 Be7 8.d5 0-0 9.a3; C2) 5...Be7 6.Nf3 (6.d4 d5 7.c5 0-0 8.Nf3 b6 9.a3) 6...e5 7.0-0 e4 8.Nd4 c5 9.Nc2; C3) 5...d5 6.c5 b6 7.d4 a5 8.Qa4 Bb7 9.Nf3; D) 5.Nf3 e5 6.Nc3 (6.d3 a5 7.b5 cb5 8.cb5 a4 9.Be2; 6.a3 Be7 7.Be2 e4 8.Nd4 c5 9.Nc2; 6.Be2 e4 7.Nd4 d5 8.Qb3 Nbd7 9.c5; 6.d4 e4 7.Nfd2 d5 8.b5 Be6 9.c5) 6...e4 7.Nd4 c5 8.Nc2 Nc6 9.d3; E) 5.a3= E1) 5...a5 6.Nf3 (6.Be2 d5 7.b5 dc4 8.Nc3 Bd6 9.Bc4; 6.Qa4 Nbd7 7.d4 d5 8.cd5 ed5 9.b5; 6.d4 ab4 7.ab4 Ra1 8.Ba1 d5 9.c5; 6.d3 d5 7.b5 dc4 8.dc4 Qd1 9.Kd1 Be7) 6...e5 7.Nc3 ab4 8.ab4 Ra1 9.Qa1; E2) 5...e5 6.d4 (6.Be2 Be7 7.d4 e4 8.d5 0-0 9.dc6; 6.Nc3 a5 7.d4 ed4 8.Qd4 ab4 9.ab4; 6.Qc2 a5 7.b5 cb5 8.cb5 Be6 9.Nf3) 6...e4 7.Nc3 d5 8.cd5 cd5 9.Rc1; E3) 5...Na6 6.d4 (6.Be2 Be7 7.d4 0-0 8.Nf3 c5 9.b5) 6...Nc7 7.Bd3 Be7 8.Nf3 0-0 9.e4; E4) 5...Be7 6.d4 (6.Be2 e5 7.Nf3 e4 8.Nd4 c5 9.Nc2; 6.Nc3 e5 7.Nf3 0-0 8.Be2 Re8 9.0-0) 6...a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1; E5) 5...d5 6.Nf3 (6.d4 a5 7.b5 Be7 8.Nc3 0-0 9.Nf3; 6.Nc3 dc4 7.Bc4 b5 8.Be2 a5 9.ba5; 6.Qf3 Nbd7 7.d4 Bd6 8.Nd2 0-0 9.Bd3; 6.c5 b6 7.d4 Be7 8.Nc3 0-0 9.Nf3) 6...dc4 7.Bc4 b5 8.Be2 a5 9.ba5.

4.Nf3 Be7?? 5.Bg7+- Bf6 6.Bh8 Bh8 7.d4 c5 8.a3 cd4 9.Nd4 Nc6 10.Nc6 bc6 11.e3?? Ba1-+ 12.Bd3 Qg5 13.0-0 Nf6 14.Nd2 Bc3 15.Ne4 Ne4 16.Be4 d5 17.cd5 ed5 18.Bh7 Bf5 19.Bf5=+ Qf5 20.Qc1 Qe5 21.Qc2 Kd7 22.Rc1+= Rh8 23.Qc3+/– Qh2 24.Kf1 Rc8 25.b5 Qd6 26.bc6 Rc6+/– 27.Qc6 Qc6 28.Rc6 Kc6 29.Ke2 Kb5 30.Kd3 Ka4 31.Kd4?? Kb3?? 32.Kd5+- a5 33.Kd4 a4 34.g4 Ka3 35.Kc3 Ka2 36.Kc2 a3 37.g5 Ka1 38.e4 a2 39.e5 f5 40.e6 f4 41.e7 f3 42.Kb3 Kb1 43.e8Q (43.e8Q a1N 44.Kc3 Nc2 45.Qb5 Nb4 46.Qb4 Kc1 47.Qb2 Kd1 48.Qd2#) 1–0. hal1958 – tensai, playchess.de, 2002.

4.e3 d5 5.Nf3 f6 6.a4 Nf5 7.b5 e5 8.d3 (8.d4 e4 9.Nfd2 Be6=) 8...Bb4 9.Nfd2 Be6 10.Be2 0-0 11.0-0 Nd7 12.d4 ed4 13.ed4 Nb6 (13...Qc7 14.c5+=) 14.c5= Nc4 15.Qc2 Nb2 16.Qb2 Ba5 17.Re1 Qd7 18.Bd3 Nh4 (18...Rae8 19.Na3=) 19.Qc2 Bf5 20.bc6 bc6 21.Re3 Bd3 22.Qd3 Rae8 23.Nf1 Qg4 24.Rg3 Qf4 25.Ra2 Nf5 26.Rf3 Qd4 0–1. DEFFM – GuestKXFJ, freechess.org, 2017.

4.e3 d5 5.Nf3+= f6 6.Nc3 Ng6 7.Be2 (7.a3!?+/–) 7...Bb4+= 8.cd5 (8.0-0 0-0=) 8...ed5 (8...cd5 9.a3 Ba5 10.0-0=) 9.Nd4 (9.Qb3!? Be7 10.h4=) 9...c5+= 10.Ndb5 (better is 10.Qa4!? Kf7 11.Nc2+=) 10...a6-/+ 11.Nd6?? (better is 11.Na3-/+) 11...Qd6-+ 0–1. GuestGCPD – GuestCCTP, freechess.org, 2017.

4.e3 d5 5.Nf3 f6 6.d4 dc4 7.Bc4 Nd5=.

4.e3 Nf5 5.b5+=.

4.f3 d5 5.c5 Nf5 6.g3 d4 7.Nh3 b6 8.Qc2 (8.cb6!? Bb4 9.a3-/+) 8...bc5 9.bc5 Qa5 10.Ng5 Bc5 11.Ne4 Be7 12.Bh3 Nd7 (12...e5 13.Bf5 Bf5 14.Nf6 Bf6 15.Qf5-/+) 13.g4-/+ Ne3 14.Qc6 Bb7! 15.Qb7 Rb8 16.Qc6 Bh4 17.Ng3 (17.Nf2 Rb2 18.Qc8 Bd8-+) 17...Rb2 18.Qc8 Bd8 19.Ne4 (19.Qc1 Nc2 20.Kd1-+) 19...Nc2 20.Kf2 Na1 21.Nd6 Ke7 22.Nf7 Rf8 23.Nd8 Rd8 24.Qc6 Qa2 25.g5 Rdb8 26.Na3 R8b6 27.Qe4 Rd2 28.Nb1 (28.Nc4 Qc4 29.Ra1 Qc3-+) 28...Re2! (28...Re2 29.Qe2 Rb2 30.Qb2 Qb2 31.Kg3 Qb8 32.f4 e5-+) 0–1. DEFFM – GuestHWDD, freechess.org, 2018.

4.Nf3 d5=.

4.Nf3 Nf5+=.

4.e3 Bb4?? 5.Bg7 Nf6 6.Bh8+-.

4.e3 Nf6 5.a3 d5 (5...a5 6.b5=) 6.Nf3 Bd6 (6...dc4 7.Bc4 b5 8.Bb3=) 7.c5+= Bc7 (7...Be7 8.d4+=) 8.Be5 (8.Be2 Qe7+=) 8...Nbd7 (8...Be5 9.Ne5 Nbd7 10.Nd7 Nd7 11.d4=) 9.Bc7 Qc7 10.d4 (10.Nd4 Nf8=) 10...0-0 (10...e5 11.Be2=) 11.Bd3+= Ne4 12.Nbd2 (12.0-0 e5+=) 12...Rf6 (12...e5 13.0-0=) 13.Qc2 (13.0-0 e5=) 13...Rh6 (13...e5 A) worse is 14.Be4 fe4 (14...de4?! 15.Ne5 Ne5 16.de5 Qe5 17.0-0=) 15.Ne5 Ne5 16.de5 Qe5-/+; B) 14.de5 Ne5 B1) worse is 15.Be4 fe4 (15...de4?! 16.Ne5 Qe5 17.0-0=) 16.Ne5 Qe5-/+; B2) 15.Ne4?? Nd3 (15...de4?! 16.Ne5 Qe5 17.Bc4 Be6 18.Rd1=; 15...fe4?! 16.Be4 de4 17.Ne5 Qe5 18.Rd1-+) 16.Qd3 fe4-+ (16...de4?! 17.Qe2 ef3 18.Qf3-+); B3) 15.Ne5 Qe5 16.0-0=) 14.Nf1 (14.Rd1 e5 15.de5 Ne5 16.Ne5 Qe5=) 14...e5= 15.Ng3? (better is 15.Rd1=) 15...Ng3-+ 16.Bf5?? (16.fg3 e4 17.0-0-+) 16...Nh1 17.Ng5 (17.Ke2 e4 18.Be4 de4-+) 17...Nf6 (17...e4 18.Be4 Nf6 19.Bh7 Nh7 20.Nf3 Rh2 21.Nh2 Qh2 22.0-0-0 Qg2 23.f4-+) 18.h3 (18.0-0-0 Rh2 19.Nf3 Bf5 20.Qf5 Rh5 21.Qe6 Kf8 22.Ne5 Re8 23.Qd6 Qd6 24.cd6 Nf2-+) 18...e4 19.Bc8 Rc8 20.0-0-0 Qh2 21.Qa4 Nf2 (21...Nf2 22.Rd2 Qg2-+) 0–1. Trkn – zweitausend, itsyourturn.com, 2001.

4.e3 Nf6 5.Qb3 Be7=.

4.e3 Nf6 5.b5 Be7 6.Nf3 0-0 7.Be2 b6 (7...d5 8.Qb3=) 8.0-0 Bb7 9.a4 a5 (9...a6 10.Nc3=) 10.Ne5 (10.Nc3 cb5 11.Nb5 Nc6+=) 10...c5 (10...d6 11.bc6 Nc6 12.Nc6 Bc6 13.d4=) 11.d4 d6 12.Nd3 Qc8 13.dc5 dc5 14.Nd2 Nbd7 15.Nf3 Rd8 16.Qb3 Ne4 (16...Bd6 17.Nf4 Re8 18.Rad1=) 17.Rad1 (17.Rfd1 Ndf6+=) 17...Bf6 (17...Bd6 18.Nf4 Nf8 19.Qa2=) 18.Bf6 (18.Nf4 Re8+=) 18...gf6 (18...Ndf6 19.Nf4+=) 19.Nf4+/– Kf7 20.Rd3 (20.Nd2 Qc7+/–) 20...Qc7+= 21.Rfd1 Nf8 22.Ne1 Ke7 23.Bh5 Rd3 24.Rd3 (24.Ned3 e5 25.Nd5 Bd5 26.cd5 c4+/–) 24...Rd8+= 25.Qc2 (25.f3 Nd6+=) 25...Rd3 (25...Qe5 26.f3 Qa1 27.Kf1 Rd3 28.Nfd3= (worse is 28.Qd3 Nd6+=)) 26.Nfd3 (26.Ned3 Kd8+=) 26...Nd7 27.f3 (27.Kh1 e5+=) 27...Ng5 (27...Nd6 28.Qb3=) 28.f4 (28.Nf2 Kf8+=) 28...Ne4= 29.Bf3 Nf8 30.Nf2 Nf2 31.Kf2 (31.Qf2 Bf3 32.Nf3 Qd6=) 31...Bf3= 32.Nf3 Ng6 (32...Kd8 33.Ne1=) 33.Qd3 (33.Qc3 Qd6=) 33...Qb8 (33...Qd6 34.Qe2=) 34.g3 (34.h4 Qd6 35.Qc2 Kd7=) 34...Qa8 (34...Qd6 35.Qc2=) 35.Qf1 (35.h4 h5=) 35...Qe4 36.Nd2 (36.Qe2 Qb1=) 36...Qc2+= 37.Ke1 (37.Ke2 Qa4 38.Qb1 Qa3+=) 37...Qa4 38.Qf3 (38.Qg2 Nf8+=) 38...Nf8 39.g4 (39.e4 Qa1 40.Ke2 Qg1-/+) 39...Qc2 40.gf5 Qf5 41.Kd1 (41.e4 Qg6-/+) 41...Qd3 42.Qg3 Nd7 43.e4 Qg3 44.hg3 Kf7 45.Nb1 (better is 45.Kc2-/+) 45...a4 (better is 45...Kg6-/+) 46.Nc3= a3 47.Kc2 Kg6 48.Kb3? (better is 48.Nd1+=) 48...Kh5-+ 49.Ka3 Kg4 50.Kb3 (50.e5 fe5 (50...Kg3?! 51.f5 Ne5 52.fe6 Nc4 53.Kb3+=) 51.fe5 Ne5-+) 50...Kg3 51.f5 e5 (51...ef5 52.ef5 h5 53.Ne2 Kg4 54.Nc1-+) 52.Kc2 h5 0–1. Hirt,Robert – Jordan, corr DDR, 1985.

4.Nf3 Bb4?? 5.Bg7 d6 6.Bh8+-.

4.Nf3 Nf6 5.a3 Be7=.

4.a3 Na6 5.d4 d6 6.Nf3 g5 (6...f5 7.Nc3+/–) 7.e4 Nh6 8.d5 Bg7 9.Ng5! e5 (9...fg5 10.Bg7 Pinning (10.Bg7 Deflection)) 10.Qh5+- Kd7? (better is 10...Ke7 11.Nf3 Qe8+-) 11.Ne6 Qe7 (11...Qg8 12.Bc1 Nf7 13.Nc3+-) 12.g3 (better is 12.Bc1!? Ng8 13.c5 Nc7 14.Ng7 Qg7+-) 12...Qf7 (12...Qf7 13.Qf7 Nf7 14.Ng7 cd5 15.ed5 Rg8+-). highvoltage (2445) – maviay (2020), net–chess.com, 2015.

4.a3 Na6 5.e3 c5 (5...Nc7 6.d4+=) 6.b5 (6.bc5 Nc5 7.Nc3 Qa5+=) 6...Nb8 (6...Nc7 7.Bd3 g6 8.Nf3+=) 7.Bd3 a6 (7...g6!?+=) 8.Qh5+- g6 (better is 8...Ke7!?+-) 9.Bg6! hg6 (9...Ke7 10.Qc5 d6 11.Qh5+-) 10.Qh8 Qe7 (10...Kf7+-) 11.Qg8 ab5 (11...Qg7 12.Qg7 Bg7 13.Nc3+-) 12.Qg6 Kd8 (12...Qf7 13.Qf7 Kf7 14.cb5 d5+-) 13.Bf6 Qf6 1–0. DEFFM – GuestWVCZ, freechess.org, 2018.

4.a3 b6 5.Nc3 Bb7 6.Nf3 h6 7.e3 Ne7 8.Bd3 d6 9.Nd4 e5 10.Qh5 Kd7 11.Qg4 Ke8 12.Ne6 Qd7 13.Qh5 g6 14.Bg6 Ng6 15.Qg6 Ke7 16.Ng7 Kd8? (better is 16...Qd8+-) 17.Qf6 Be7 (17...Qe7 18.Ne6 Ke8 19.Nc7 Qc7 20.Qh8 Qe7+-) 18.Ne6 Kc8 19.Qh8 Bd8 20.Qh6 Qf7 21.Nd8 Kd8 22.Ne4 d5 23.Nd6 Qe7 24.Be5! Kd7 (24...Qe5 25.Nf7 Double attack (25.Nb7 Deflection; 25.Nf7 Decoy; 25.Nb7 Overloading)) 25.Qf4 Na6 26.cd5 cd5 27.Nb7 Rf8 28.Qd4 Nc7 29.Rc1 Ke6 30.Rc6 Kf5 31.Qf4 1–0. usingprogram (2030) – bas11, kurnik, 2012.

4.a3 d5 5.c5 a5 6.e3 ab4 7.ab4 Ra1 8.Ba1 b5 (8...b6 9.d4=) 9.Qh5 (9.d4 Nh6+=) 9...g6= 10.Qh4 1–0. GuestHWQG – Guestkurex, freechess.org, 2017.

4.a3 d5 5.e3 h5 (5...dc4 6.Bc4 b5 7.Bb3=) 6.Be2 a6 (6...h4!?+=) 7.Bh5+/– Ke7 8.cd5 Bd7 (8...Qd5!? 9.Bf3 Qd6+/–) 9.de6+- Be6 10.Bg4 Bc4 11.h3 b6 (11...a5 12.ba5 Nh6 13.Be2 Be2 14.Ne2 (worse is 14.Ke2 Qd5+/–) 14...Ra5 15.Nf4+-) 12.Ne2 Nh6 13.Nf4 Rh7? (13...Bf7 14.Be6!+-) 14.Ng6 (14.Qc2 Bg8 15.Qe4 Kd6 16.Qd3 Kc7 17.Qh7 Bh7 18.Ne6 Kc8 19.Nd8 Kd8+-) 14...Kd6? (14...Kf7+-) 15.Qf3 (15.Nf8?! Qf8 16.Qf3 f5+-) 15...Kc7 (15...Ng4 16.Qg4 (worse is 16.Nf8 Qf8 17.Qf4 Ke7 18.Qe4 Ne5 19.Be5 fe5 20.Qh7 Be6+-) 16...Bd5 17.Qf4 Ke6 18.Nf8 Qf8 19.e4+-) 16.Qf4 Bd6 17.Qc4 Nd7 (17...Ng4 18.Qg4 Qd7+-) 18.Qf7 (better is 18.Bf3 Nb8 19.Nc3+-) 18...Nf7-+ 19.Nc3 Nde5 20.Ne5 Ne5 21.Bf5 (21.Be2 Qg8-+) 21...Rh6 (21...g6 22.Bc2-+) 22.Rc1 (22.d4 Nc4 23.Bc1 Qe7-+) 22...c5 (better is 22...g6 23.Bb1 Nc4 24.Nd5 cd5 25.d3-+) 23.0-0 Nd3?? (better is 23...Be7 24.bc5 bc5-+ (24...Bc5?! 25.d4-/+; 24...Qd2 25.cb6 Kb8 26.Na4=)) 24.Bd3+= cb4 (24...Bh2! 25.Kh2 Qd3 26.bc5 Rb8 27.cb6 Kd8+=) 25.Nd5 Kb7 (25...Kb8 26.Be4 Rh4 27.f4=) 26.ab4 (better is 26.Be4 Rh4 27.f4+/–) 26...f5 (better is 26...Bh2! 27.Kh2 Qd5=) 27.Bf5+- Qg5 (27...Bh2 28.Kh2 Qd5 29.Bg7+-) 28.e4 (better is 28.Be4 Re6 29.Bf3 Rae8 30.Nc7 Ka7 31.Ne6 Re6+-) 28...a5? (28...Rh4 29.f4! Rf4 30.Nf4 (30.Rf4?! Bf4 31.Bd7 Rf8+=) 30...Bf4 31.Be6+-) 29.ba5 (29.f4 Qh4+-) 29...ba5?! (29...g6 30.a6! Ka7 31.f4+-) 30.Bc3 (30.f4 Qd8 31.Bg7 Rh5 32.Rb1 Bb4+-) 30...a4 (30...Bc5+-) 31.Rb1 Kc6 (31...Ka6 32.Rb6 Ka7+-) 32.Rfc1 Re8 (32...Qf5 33.Bg7 Bc5 34.ef5 Rh7 35.Ne7 Kd6+-) 33.Bf6 Bc5 1–0. GuestQKGQ – GuestVVMS, freechess.org, 2017.

4.a3 e5 5.e4 g6 6.Nc3 b5 (better is 6...a5!? 7.b5 Bc5+=) 7.cb5+- c5 8.Qb3 cb4 9.Bc4 bc3 10.Bf7 Ke7 11.Bc3 Nh6 (better is 11...Qb6 12.Bb4 d6 13.Bg8 Kd8+-) 12.Bd5 Nc6 13.bc6 dc6 14.Bc6 Qb6 (14...Bd7 15.Bb4 Ke8 16.Qe6 Be7 17.Be7 Qe7 18.Bd7 Kf8+-) 15.Bb4 Qb4 16.ab4 Be6 17.Qd3 Rd8 18.Ra7 Bd7 19.Rd7 (19.Rd7 Ke8 20.Rh7 Rd7 21.Qd7) 1–0. Zedtler,Uwe – Krahl,Wolfgang, V0011 DESC, 1999.

4.b5 cb5 5.cb5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qa5 9.Nc3 Bb4 10.e3 Nh6 11.Be2 d5 12.Bh5 (12.Nf3 0-0=) 12...g6 (12...Nf7 13.Be2=) 13.Be2+= Ke7 (13...0-0 14.Nf3+=) 14.Nf3+/– Nd7 15.0-0 b6 (15...Nf5 16.Qc2+/–) 16.Nd4 g5?? (better is 16...Bb7+/–) 17.Nc6+- Kf7 18.Na5 Ba5 19.f4 (19.Qc2 Kg7+-) 19...g4 (19...gf4 20.Rf4 Ke8 21.Bh5 Ke7 22.Qb3 Bc3 23.Bc3+-) 20.Bg4 f5 (20...Ng4 21.Qg4 Bb7 22.Qh5 Ke7 23.Nb1+-) 21.Bh5 Ke7 22.Nd5! ed5 23.Bh8 Nc5 24.Qa1 Bb7 25.Qf6 (25.Qg7 Kd8 26.Qf8 Kd7 27.Qe8 Kd6 28.Be5) 25...Kd7 26.Qh6 (26.Qg7 Kc8 27.Qf8 Kd7 28.Qe8 Kd6 29.Be5) 26...d4 27.Qh7 (27.Qg7 Kd6 28.Qd4 Kc7 29.Be5 Kc8 30.Qd6 Na6 31.Qe6 Kd8 32.Qe8) 27...Kc8 28.Bd4 (28.Qg8 Kd7 29.Be5 Bd2 30.Qe8) 28...Ne4 (28...Kb8 29.Be5 Ka7 30.Bf3 Bd2 31.Ra1 Ba5 32.Qc7 Ne4 33.Qb8) 29.Be5 Nd2 (29...Nd6 30.Bd6 Bd2 31.Qc7) 30.Qc7 1–0. GuestNKFZ – GuestFJTD, freechess.org, 2017.

4.b5 cb5 5.cb5 Bb4 6.e3 Qa5 (6...d5 7.Qh5 g6 8.Qh4+=) 7.Bd3 (7.a3 Bf8 8.Bd3 d6+-) 7...a6 (7...d5 8.Qh5 Kf8 9.Nc3+/-) 8.Qh5 g6? (better 8...Kf8+-) 9.Bg6! Ke7 (9...hg6 10.Qh8 Pinning (10.Qh8 Deflection)) 10.Bd3 ab5 11.Nf3 Nc6 12.0-0 (12.Ng5 Qd8 13.Qf7 Kd6+-) 12...d5 (12...Bd6 13.Nc3 Ba3 14.Ba3 Qa3 15.Bb5 Kd8+-) 13.Bh7 (better 13.a3 Bd6+-) 13...Bd6?? (better 13...Qc7+/-) 14.Qg6 (better 14.Ng5!? Kd7 15.Nf7 Rh7 16.Qh7 Nce7+-) 14...Kf8 15.Bf6 Rh7 16.Qh7 Nf6 17.Qh6 Ke7 18.Qg7 Kd8 19.Qf6 Be7 20.Qh8 Kd7 (20...Kc7 21.Rc1 b4 22.Qg7+-) 21.Rc1 Qb4 (21...b4 22.Qb2+-) 22.Rc6! bc6 (22...bc6 23.Ne5 Combination; 22...Kc6 23.Nc3 Combination) 23.Ne5 Kd6 (23...Kc7 24.Nc3 Qd6 25.Rc1+-) 24.Nc3 Qb2 (24...Qh4 25.Qe8 Bb7 (25...Ke5?? 26.Qc6 Bb7 27.d4 Kf5 28.Qb7+-) 26.Qd7 Ke5 27.Qb7 Rh8+-) 25.Nc4! bc4 (25...bc4 26.Ne4 Double attack; 25...dc4 26.Ne4 Double attack) 26.Ne4!! Kd7 (26...de4 27.Qd4 Double attack (27.Qb2 Discovered attack)) 27.Qb2 Kc7 (27...de4 28.Qd4 Bd6 29.Qc4 Ra3+-) 28.Qg7 Kd7 29.Nc5 Kd6 30.a4 Ra7 31.Rc1 Kc5 32.Qd4 Kd6 33.Qa7 Bd7 34.Qb8 Kc5 35.d4 1-0. DEFFM – GuestGKXZ, freechess.org, 2021.

4.b5 d5 5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 Bd7 9.Bd3 Ne7 (9...Nh6 10.cd5 cd5 11.Nc3=) 10.Nc3 (10.Qh5!? g6 11.Qh4+/–) 10...Ng6 (10...dc4 11.Bc4 Nd5 12.bc6 bc6 13.Nf3=) 11.Qh5 f5 12.Nge2 (12.Nf3 cb5 13.cd5 b4+-) 12...Qh4 13.Qh4 Nh4 14.0-0 Rg8 (14...cb5 15.cd5 b4 16.de6 Be6 17.Nb5+/–) 15.Bb2 Bd6 16.f4 (16.Ra1 Ke7+=) 16...g5= 17.g3 Ng6 18.fg5 (18.bc6 bc6 19.Kf2=) 18...Ne7 (18...Ne5 19.bc6 bc6-/+ (19...Nd3?! 20.cd7 Nd7 21.cd5 Nb2 22.de6=)) 19.cd5 cd5 20.Nf4 (20.h4 Ng6+=) 20...Rg5 21.Nce2 (better is 21.Be2!?+=) 21...e5-/+ 22.Nh3 Rg4 Black intends e4 (22...Rg8 23.b6-/+) 23.Nf2 Rg8 24.Ra1 (better is 24.Nc3!?+=) 24...e4-/+ 0–1. GuestSNRH – GuestZPOT, freechess.org, 2017.

4.e3 Bb4+= 5.a3 Bc5?? (better is 5...Be7+=) 6.Qh5+- Ke7 (6...g6 7.Qc5 d6 8.Qb4+-) 7.Qc5 d6 8.Qh5 Nd7 (8...e5 9.d4+-) 9.Qd1 (9.d4 e5+-) 9...Nc5 (9...e5 10.d4+-) 10.d3 (10.d4 Ne4+-) 10...d5 (10...e5 11.d4 Ne6 12.Nf3+-) 11.Nd2 (11.d4 Ne4+-) 11...Qb6 (11...Qa5 12.d4 Na4 13.Qb3+-) 12.Qc2 (12.Bc3 e5+-) 12...e5 (12...dc4 13.Nc4 Qb3 14.Qb3 Nb3 15.Rb1+-) 13.Ngf3 (13.d4 Na4 14.Qa4 Qb2+-) 13...Bg4 (13...dc4 14.Nc4 (worse is 14.dc4 Bf5 15.Qf5 Qb2+-) 14...Qb3 15.Qb1+-) 14.Be2 (14.d4 Ne4 15.Ne4 de4+-) 14...h5 (14...Bf3 15.Nf3 (15.Bf3?! Qb2 16.Qb2 Nd3 17.Ke2 Nb2=) 15...Qb3 16.Qb3 Nb3 17.Rb1 dc4 18.dc4+-) 15.Rb1 (15.d4 Ne6 16.cd5 cd5 17.de5 Re8+-) 15...Qc7 (15...Bf3 16.Bf3 Qa6 17.Bc3+-) 16.a4 (16.cd5 cd5 17.d4 ed4 18.Bd4 b6+-) 16...Nh6 (16...b6 17.d4 ed4 18.Bd4+-) 17.Ba3 Qd6 (17...b6 18.cd5 Ke8 19.Rc1+- (worse is 19.Bc5 cd5 20.d4 bc5+-)) 18.Rb7! Ke6 (18...Nb7 19.Bd6 Pinning (19.Bd6 Deflection)) 19.cd5 (better is 19.Bc5!? Qc5 20.cd5 Qd5+-) 19...cd5 20.Qc5 Rac8 (20...Qc5 21.Bc5 Rhe8+-) 21.Qd6 (21.Qd6 Kf5 22.Nh4 Kg5 23.Rg7 Kh4 24.Qf6) 1–0. GuestZSWT – GuestGMMX, freechess.org, 2016.

4.f3 Bb4-/+ 5.Qb3 (5.a3 Ba5-/+) 5...a5 (5...Na6 6.f4-/+) 6.a3 (6.e3 d5-/+) 6...Bf8 (6...Be7 7.d4-/+) 7.e3 (7.e4 d5+=) 7...a4 (7...d5 8.d4-/+) 8.Qc2+= d5 9.cd5 ed5 10.Bd3 g6 11.Ne2 (11.Nc3 b5+=) 11...Bg7 (11...Nd7 12.0-0+=) 12.0-0 (12.h4 Ne7+=) 12...Qd6 (12...Ne7 13.f4+=) 13.Nbc3= b5 (better is 13...Nd7!?=) 14.Nb5!+/– cb5?? (better is 14...Qd8 15.Nbd4 Ne7+/–) 15.Qc8+- Kf7 (15...Qd8 16.Bb5 Ke7 17.Qb7 Nd7 18.Bd4+-) 16.Qb7 Ne7 17.Qa8 Nbc6 (17...Nd7 18.Qa5 Nc6 19.Qc3+-) 18.Qa6 Rb8 Black prepares the advance b4 19.Nd4 (19.Bb5 Qc5 20.Nc3 f5+-) 19...Qc5 (19...Qc7 20.Bb5 Qa7 21.Qa4 Qa4 22.Ba4 Rb2 23.Nc6+-) 20.Rac1 (better is 20.Nb5 Ne5 21.Be5 fe5 22.Qa4 Qc6+-) 20...Qa7 (20...Qb6 21.Qb6 Rb6 22.Nb5 f5 23.Bg7 Kg7+-) 21.Rc6 (21.Nc6?! Qa6 22.Nb8 Qd6+-) 21...Nc6 22.Qc6 (22.Nc6?! Qa6 23.Nb8 Qb7=) 22...b4 (22...Kg8+-) 23.Qd5 Ke8 24.Qg8 Bf8 25.Rc1 Qb6 26.Bb5 Ke7 (26...Qb5 27.Nb5 Rb6 28.Rc8 Kd7 29.Qf7 Be7 30.Rc7 Kd8 31.Qe7) 27.Rc7! Qc7 (27...Qc7 28.Qe6 Mate attack) 28.Qe6 Kd8 29.Qe8 1–0. DEFFM – GuestYP, freechess.org, 2018.

(--> 1.b4 c6 2.Bb2 Nf6 3.c4 e6).

4.a3 a5 5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5 4.b5 c6 5.c4).

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.c4).

4.b5 cb5 5.cb5 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

4.b5 cb5 5.Bb5 Nf6 6.a4 Be7= 7.Nf3 0-0 8.0-0 b6 (8...d5 9.Nc3=) 9.Be2 Ba6 10.d4 Be2 11.Qe2 Nc6 12.c4 d5 13.Nbd2 dc4 14.Nc4 Nb4 15.Nce5 Rc8 16.Rfc1 Ne4 17.h3 Bf6 (17...Rc1 18.Rc1 Qe8 19.Qd1=) 18.Nd3 (18.Ba3 Qd6+=) 18...Be7 19.Nb4 Bb4 20.Ne5 Qd5 21.Qd3 Nd6 (21...f6 22.Nc4 Rc6 23.f3=) 22.Ba3 Ba3 (22...f6 23.Bb4 fe5 24.Ba3=) 23.Qa3+= Nc4 24.Nc4 Rc4 25.Qb2 Rc6 26.Rc6 Qc6 27.Rc1 Qa4 28.Qb6 Qa2 29.Qb7 h6 30.Qa6 Rb8 31.Rc5 Attacking the isolated pawn on a5 31...a4 32.Ra5 Rb1 (32...Qc2 33.Rc5 (worse 33.Ra4 Rb2 34.Qa8 Kh7-/+) 33...Qb1 34.Kh2=) 33.Kh2+= Qf2?? (better 33...Ra1 34.Kg3 Qc2=) 34.Qa8+- Kh7 35.Ra4 (better 35.Qe4 f5 36.Qb1 Qe3 37.Ra4 Qf4 38.Kh1+-) 35...Rb2 (better 35...Qg1 36.Kg3 Rb3 (36...Qe3?! 37.Qf3 Qe1 38.Kh2-+) 37.Qe4 f5-+) 36.Qe4 (36.Ra3-/+) 36...g6?? (better 36...f5 37.Qc6 Qe3-+) 37.Ra7=+ Re2 38.d5 (better 38.Rc7!?=+) 38...Re3-/+ 39.Qc4?? (39.Qc4 Qg3 40.Kg1 Re1 41.Qf1 Qe3 42.Kh1 Rf1 43.Kh2 Qf4 44.g3 Qd2; better 39.Rf7 Qf7 40.Qe3 ed5 41.g4-/+). BeepBeepImAJeep (2640) – Takeda (2295), lichess.org, 2018.

4.b5 Qb6 5.a4 cb5 (5...d5 6.Nf3=) 6.ab5 (6.Bb5 Nf6+=) 6...Nf6 7.c4 d5 (7...Be7 8.Qa4=) 8.Nf3 (8.Bf6 gf6 9.cd5 ed5+=) 8...dc4 9.Bc4 Bd7 10.Qe2 Be7 11.0-0 0-0 12.Nc3 1–0. DEFFM – GuestTJYR, freechess.org, 2018.

4.a3 Nf6= 5.c4 (5.Nf3 a5=) 5...bc4 6.Bc4 d5 7.Be2 Bd6 (7...a5 8.ba5 Ba6 9.d3=) 8.Nf3 Qc7 (8...a5 9.Qa4=) 9.d4 (9.Bf6!? gf6 10.d4+=) 9...0-0 10.Nbd2 (10.Nc3 a5 11.ba5 Ba6=) 10...Nbd7 (10...a5 11.Bc3=) 11.Rc1+= (11.Rc1 Qb7 12.Qc2+=). Nemec,Zdenek – Michalcik,Jiri, CSLA, 1981.

4.a4 Bb4?? 5.Bg7 Nf6 6.Bh8+-.

4.a4 Bb7+=.

4.c4 a6 5.cb5 ab5 6.Be2 Bb4?? (better 6...Nf6 7.a3 Be7=) 7.Bg7+- Nf6 (7...Qg5 8.Bh8 Qg2 9.Bf3+-) 8.Bh8 Ne4 9.Bc3 (9.Nf3 f6 10.Qc2 d5+-) 9...Qa5 (9...Nc3 10.dc3 Qf6 11.Qd4+- (worse 11.cb4 Qa1 12.a3 h6+-)) 10.Bb4 (10.Qc2!? Bc3 11.Nc3 Nc3 12.dc3 d6+-) 10...Qb4 11.Qc2 d5 12.Nf3 Bb7 (12...f6 13.0-0+-) 13.0-0 Nd7 14.Nc3 Nc3 15.Qc3 (better 15.dc3!? Qe7+-) 15...Qc3 16.dc3 c5 (16...Nc5+-) 17.Bb5 Ra5 (17...Ba6 18.a4+-) 18.a4 (18.Bd7 Kd7 19.Ng5 Ba6+-) 18...Kd8 (18...Ba6 19.Rfb1+-) 19.Bd7 (19.Ng5 Nf6 20.Nf7 Ke7+-) 19...Kd7 20.Ne5 Ke7 21.Rab1 (better 21.Rfb1 Ba8 22.Rb5 Ra7+-) 21...Ba8 22.Ra1 (22.Rb8 Ra4 23.Rh8 Kf6 24.Nd7 Kg7 25.Nc5 Ra3+-) 22...Kf6?? (22...Bb7 23.Rfb1 Ra7+-) 23.Nd3 (23.f4 Ke7+-) 23...c4 24.Nb4 Ke5 25.Rfd1 f5 26.Rd4 Kd6 (26...Kf6 27.Rh4 Kg6 28.g4+-) 27.Rh4 Ra7 28.g3 (28.Rh6 Rf7+-) 28...Rg7 (28...Bc6 29.Nc6 Kc6 30.Rh6+-) 29.f3 (29.a5 Re7+-) 29...e5 (29...Rd7 30.a5+-) 30.Rh6 Kc5 Black plans d4 (30...Kc7 31.Rf6+-) 31.Re6 (31.Na6) 31...d4 32.Re5 Kd6 33.ed4 Bf3 34.Rf5 Be2 (34...Be4 35.Re5 Ba8 36.Rae1+-) 35.Re1 Bd3 36.a5 (better 36.Ra5 Rd7 37.Nd5+-) 36...Bf5 37.a6 h5 (37...Bh3 38.Re4+-) 38.Re5 Bg4 (38...Rf7 39.Kg2 Bg4 40.Rd5 Kc7 41.Rc5 Kb8 42.d5+-) 39.Rc5 (better 39.Rd5 Kc7 40.Rc5 Kb6 41.Rc4 Rf7+-) 39...h4 (39...Rf7 40.h3 (40.Rc4 Bh3 41.Rc6 Kd7 42.Rc7 Kc7 43.Nd5 Kd6-+) 40...Bh3 41.Rh5 Rf1 42.Kh2+-) 40.Rc4 (better 40.Rc6!? Kd7 41.a7 Rg8+-) 40...hg3 41.hg3 Be2 (41...Bh5 42.Kg2 Rf7 43.d5+-) 42.Rc6 Kd7 43.Kf2 Bb5 (43...Bg4 44.a7 Rf7 45.Ke3 Rf3 46.Ke4+-) 44.Rf6 (44.Rb6 Rf7 45.Ke3 Re7 46.Kf4 Rf7 47.Ke4 Ba6 48.Na6 Rf1+-) 44...Re7 (44...Rg8 45.a7 Bc4 46.Nc6+-) 45.Nd5 (45.a7 Re2 46.Kf3 Re8+-) 45...Re8 46.Ne3 (46.a7 Bc6 47.Nb6 Kc7 48.Rc6 Kc6 49.a8Q Ra8 50.Na8 Kd5 51.Nb6 Kc6+-) 46...Ba6 (46...Ra8 47.a7 Bd3 48.c4+-) 47.Ra6 Rf8 48.Kg2 Re8 49.Nf5 (49.Nd5 Re2 50.Kf3 Rd2+-) 49...Re2 (49...Rc8 50.Rd6 Ke8 51.Re6 Kf7 52.Re3+-) 50.Kh3 Rc2 51.Ra3 Ke6 52.g4 Rd2 (52...Rc1 53.Kh4+-) 53.c4 Rf2 (53...Kf6 54.c5 Rc2 55.Kh4+-) 54.c5 Rf3 (54...Rf1 55.d5! Ke5+-) 55.Kh4 (better 55.Rf3 Kd5 56.g5+-) 55...Ra3 56.Kg5 Ra7 57.Kf4 Kd5 58.g5 Ra4 (58...Ra6+-) 59.g6 Ra7 (59...Ra8 60.g7 Rd8 61.Ne7 Ke6 62.g8Q Rg8 63.Ng8+-) 60.Kg5 (60.g7!? Ra8+-) 60...Ra8 61.g7 Ke6 62.Kg6 Rg8 (62...Re8 63.Ne3+-) 63.Kh7 Ra8 64.g8Q Rg8 65.Kg8 Kf5 66.c6 Ke6 67.d5! Kd6 (67...Kd5 68.c7) 68.Kf7 Kd5 69.c7 Kd6 70.c8Q Ke5 (70...Kd5 71.Qe6 Kd4 72.Qd6 Kc4 73.Ke6 Kb3 74.Qd3 Kb2 75.Qd2 Ka1 76.Kd5 Kb1 77.Kd4 Ka1 78.Kc3 Kb1 79.Qb2) 71.Qe6 (71.Qc4 Kf5 72.Qd4 Kg5 73.Qe4 Kh5 74.Kf6 Kh6 75.Qg6) 71...Kd4 72.Qe5 (better 72.Kf6+-) 72...Kd3?? (better 72...Ke5 73.Kf8=) 73.Kf6 (73.Ke6 Kc4 74.Qe3 Kb4 75.Kd5 Kb5 76.Qb3 Ka5 77.Kc5 Ka6 78.Qb6) 73…Kc4+- ½–½. aravind555 (1615) – metalio (1625), lichess.org, 2019.

4.c4 bc4 5.Bc4 a5 6.a3 ab4=+ 7.ab4 Ra1 8.Ba1 Nf6 (8...Bb4?? 9.Bg7 Qg5 10.Bh8 Qg2 11.Qf3 Qf3 12.Nf3+-) 9.Bc3 c5 (9...d5 10.Be2=+) 10.bc5= Bc5 11.Ne2 (11.Qb3 Qb6=) 11...d5 12.Bb5 (12.Bd3 Nbd7=) 12...Bd7 13.Qa4 Bb5 (13...Qb6 14.Na3=) 14.Qb5 Nbd7 15.Ba5 (15.0-0 Qb6 16.Qb6 Bb6=) 15...Qc8 (15...Qe7 16.d4 Bd6 17.0-0=+) 16.d4= Be7 17.0-0 0-0 18.Rc1 Qe8 (18...Qb8 19.Qc6=+) 19.Bc7 Ne4 20.Nbc3 Nc3 21.Rc3 (21.Nc3 Nf6=) 21...Nf6 22.Qa6 Ne4 23.Rc1 (23.Rc2 Qd7 24.Bf4 Nd6=) 23...Qa8 (23...Bh4 24.g3 Be7 25.Nc3=) 24.Qa8 Ra8 25.f3 Nd2 26.Kf2 Nc4 27.e4 h6 (27...Ra7 28.Bg3=) 28.Nf4 (28.ed5!? ed5 29.Nc3=) 28...Ra2 29.Kg3 (better 29.Ne2=+) 29...g5-+ Black is in command 30.ed5 (30.Nd3 de4 31.fe4-/+) 30...ed5?? (better 30...gf4 31.Bf4 ed5-+) 31.Nd5+- Bd6 32.Bd6 (32.Kh3!? Bc7 33.Rc4 Ba5+-) 32...Nd6+- 33.Rc6 (better 33.Ne7!? Kf8 34.Re1+=) 33...Nf5= 34.Kg4 (34.Kh3 Kg7=) 34...Nd4=+ 35.Kg3?? (35.Rc8 Kg7 36.Kh3 h5=+) 35...Kg7 (35...Nc6 36.f4-+) 36.Rd6?? (better 36.Rc4 Rd2 37.Ne3=+) 36...Nf5-+ 37.Kh3 Nd6 38.Kg3 (38.Nc3 Rc2 39.Nd1 Nf5-+) 38…f5 (38...f5 39.Kh3 Nc4-+) 0–1. aravind555 (1700) – carlosmagali (1650), lichess.org, 2020.

4.Nf3 Nf6 5.a3 d5 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 b5).

4.a3 a5 5.b5 d5 6.Nc3 Nd7 7.Rb1 Ngf6 8.bc6 bc6 9.Nf3 Bd6? (better is 9...Rb8=) 10.Nd5!+- Qd8 (10...cd5 11.Bf6 Combination; 10...ed5 11.Bf6 Combination; 10...Nd5 11.Bg7 Combination) 11.Nf6 (11.Nf6 Nf6 12.Ne5+-) 1–0. Andersson,Lars H – Nilsson,Erik, corr SSKK 2–92, 1987.

4.a3 a5 5.c3 Nf6 6.Nf3 d5 7.d4 (7.Be2 Bd6 8.0-0 0-0 9.d4 Qc7 10.ba5 Ra5 11.c4 b6 12.Qc2=; 7.d3 Bd6 8.Be2 0-0 9.0-0 Re8 10.Nbd2 e5 11.c4 ab4 12.ab4=; 7.Qa4 Nbd7 8.Be2 Bd6 9.0-0 Ra7 10.Qc2 0-0 11.d4 Re8 12.c4=) 7...ab4 8.cb4 Bd6 9.Bd3 Nbd7 10.0-0 0-0 11.Qc2 Qa7 12.Rc1=.

4.a3 a5 5.c3 Nf6 6.Nf3 d6 7.Be2 (7.d4 ab4 8.cb4 Be7 9.Bd3 0-0 10.0-0 d5 11.Nc3 Nbd7 12.Qc2=; 7.d3 d5 8.Be2 Bd6 9.Nbd2 Nbd7 10.0-0 0-0 11.e4 e5 12.ed5=; 7.Bc4 d5 8.Be2 Bd6 9.0-0 Nbd7 10.d3 0-0 11.Nbd2 ab4 12.ab4=) 7...Be7 (7...d5 8.0-0 Bd6 9.d3 0-0 10.c4 ab4 11.Bd4 c5 12.ab4+=) 8.0-0 c5 (8...e5 9.d3 ab4 10.cb4 0-0 11.Nbd2 Be6 12.d4=) 9.b5 (9.Qc2 0-0 10.bc5 Qc5 11.c4 Nbd7 12.d4+=) 9...Qc7 (9...0-0 10.c4 e5 11.Nc3 Bf5 12.d3=) 10.c4 b6 (10...0-0 11.Nc3 Nbd7 12.Qc2+=) 11.d4 (11.Nc3 0-0 12.Qc2+=) 11...Bb7 (11...cd4 12.Nd4+=) 12.Nc3 White prepares the advance d5 (12.dc5 Qc5 13.Bd3 0-0=; 12.d5+=) 12...Nbd7 (12...cd4 13.Nd4 Nbd7 14.f4=) 13.Qc2 (13.d5 Ne5+/–) 13...g5 (13...0-0!?=) 14.d5 0-0-0 (better is 14...Rg8!?+/–) 15.Ng5+- Rdf8? (15...Rhg8 16.Nf7 (worse is 16.Nh7 ed5 17.Nd5 Nd5 18.cd5 Bd5+/–) 16...Rdf8 17.e4 ed5 18.Nh6 de4 19.Ng8 Rg8 20.f3 ef3 21.Bf3+-) 16.e4 (16.de6 Ne5 17.ef7 Qd7+-) 16...h6? (better is 16...e5+-) 17.Nf7! (17.de6?! hg5 18.Nd5 Bd5 19.ed7 Qd7 20.cd5 Rh4+-) 17...Rf7 18.de6 Rff8 19.ed7 Qd7 20.Nd5 Bd5 21.ed5 Kc7 (21...Rhg8 22.Rae1+-) 22.Rfe1 (22.Bd3!? Rhg8 23.Bf5 Qd8+-) 22...Rhg8 23.g3 Qh3 24.Bf1 Qd7 25.Re6 Rf7 26.Rae1 Rgf8 27.Bh3 Qd8 28.R1e3 Ng8 29.f4 (29.Qe2 Rf2 30.Qf2 Rf2 31.Kf2 Bg5+-) 29...Bf6 30.Bf6 Rf6 31.Re1 1–0. Kamaletdinov,Farit (1950) – Shantemirov,Samat, Astrakhan Reg. Championship Open, 2007.

4.a3 a5 5.c3 Nf6 6.Nf3 Be7 7.Be2 (7.d4 d5 8.Bd3 Nbd7 9.0-0 c5 10.Nbd2 c4 11.Bc2 0-0 12.Qe2=; 7.d3 0-0 8.Be2 c5 9.0-0 d5 10.Nbd2 Nc6 11.Qa4 Bd6 12.Rfb1=; 7.Qc2 d5 8.Be2 0-0 9.0-0 Nbd7 10.d4 Qc7 11.ba5 Ra5 12.c4=) 7...0-0 8.0-0 d5 9.d3 c5 10.Nbd2 Nc6 11.Qa4 Bd6 12.Rfb1=.

4.a3 c5 5.Nc3 cb4 6.Nb5 ba3 (better is 6...Nf6!?+=) 7.Be5+/– Nc6?? (better is 7...Na6 8.Nd6! Bd6 9.Bg7 Ne7 10.Bh8 Bc5+/–) 8.Nc7+- Kd8 9.Na8 Ne5 (9...Qc5 10.Bg3 b5+-) 10.Nb6 (10.Nb6 ab6 11.Qb1+-) 1–0. pierre (2025) – Netto, internet, 2006.

4.c4 Nf6 5.b5 c5 (5...a6!?=) 6.a4 d5 7.d3 (7.Bf6 gf6 8.cd5 ed5+/–) 7...Qc7 8.Nd2 Be7 9.Ngf3 0-0 10.Be2 Nbd7 11.0-0 b6 12.Qc2 (12.a5 a6=) 12...Bb7 (12...a6 13.h3=) 13.a5 ba5 14.Bc3 Nb6 (14...a6 15.Ba5 Qd6 16.b6 Nb6 17.Rab1=) 15.Ra5+= dc4 16.dc4 (16.Nc4?! Nc4 17.dc4 Ne4=) 16...h6 (16...a6!?+/–) 17.Rfa1+- Nc8 18.Ne5 Bd6 (18...Nd7 19.Nc6 Bc6 20.bc6+/–) 19.Bf3 (19.f4 Be5 20.fe5 Nd7+-) 19...Bf3 20.Ndf3 Be5 (20...Nd7 21.Nd7 Qd7 22.Rd1+/–) 21.Be5 (21.Ne5 Ne7+-) 21...Qe7 (21...Qb7 22.Qb2 Qe7 23.Bc3+-) 22.Nd2 (22.Ra6!?+-) 22...Nd7+/– 23.Qe4 Ne5? (better is 23...Ndb6!?+/–) 24.Qa8+- (24.Qe5?! Rd8 25.Nf3 f6=) 1–0. Chashchev,Sergey (2305) – Barsegian,Ararat (2195), Memory of Alexei Molozhay, 2009.

4.Bd3 Qb4+= 5.Ba3 Qb6 (5...Qa5 6.Bf8 Kf8 7.Nc3+=) 6.Bf8 Kf8 7.Nf3 (7.Nc3 Nf6+=) 7...Na6 (7...d6 8.Nc3+=) 8.0-0= Nb4 (8...Nf6 9.Nc3+=) 9.Be2 Qc5 (9...d6 10.Nc3=) 10.Nc3 (10.a3 Nd5= (worse is 10...Nc2 11.Ra2+/–)) 10...b6 (10...b5 11.a4=) 11.e4 (11.a3 Na6=) 11...Na6 (11...d6 12.a3 Na6 13.Nb1=) 12.a3 (12.e5 d5=) 12...Nh6 (12...e5 13.Bd3=) 13.e5 (13.Qe1 e5=) 13...Qe7 (13...d5 14.Qb1=) 14.d4 (14.Ne4 Nf5=) 14...d5 15.ed6 Qd6 16.Ne4 Qe7 (16...Qd5 17.Qd3=) 17.Ne5 (17.Bd3 Bb7=) 17...Nb8 (17...Qc7 18.Bd3+=) 18.Qd2 (18.Re1 Bb7=) 18...Bb7 19.Qf4 f6 (19...Nf5 20.Ng5 f6 21.Nh7 Kg8 22.Ng6=) 20.Nf3 (20.c3 Nf5 21.Nc4 Na6+=) 20...Nd7 (20...c5!? 21.Nd6 cd4 22.Nb7 Qb7 23.Nd4 e5 24.Ne6 Ke7+=) 21.Nd6+/– Nb8 (21...Rb8!?+/–) 22.Nb7 Qb7 23.Bc4 Qe7 (23...Nf7!?+/–) 24.Rfe1+- e5? (24...Nf7 25.Re6 Qd8+-) 25.Re5 (25.de5?! Nd7+-) 25...Qd7 26.Ng5 Nf7 (26...b5 27.Rae1 Na6 28.Ne6 Ke7 29.Nc5 Kd8 30.Nd7 fe5 31.Qg5 Kc8 32.Qg7+-) 27.Nf7 (27.Bf7 fe5 28.Qe5 h6 29.Ne6 Ke7 30.Qg7 Rh7 31.Qh7 Qc8+-) 27...b5 28.Bb3 fe5 (28...Qf7 29.Rae1 Nd7 30.R5e3+-) 29.Ne5 (29.Ne5 Ke8 30.Nd7 Kd7 31.Qf7 Kd8 32.Qb7+-) 1–0. DEFFM – GuestBRLC, freechess.org, 2018.

4.c4 a6 5.a4 b6 6.b5 Bb7 7.Nf3 d6 8.Be2 Nd7 9.0-0 Ngf6 10.d4 Be7 11.Nbd2 h6 12.Qc2 g5 13.Nb3 g4 14.Nfd2 h5 15.Rfc1+= h4 16.f4 gf3 17.Bf3 e5 18.c5 d5? 19.cb6+- Qb8 20.bc6 Bc6 21.Qc6 e4 22.Be2 Rg8 23.Nf1 Kf8 24.a5 Ng4 25.h3 Bd6 26.Bg4 Rg4 27.hg4 Nf6 28.Ba3 Ng4 29.Bd6 (29.Bd6 Kg7 30.Bb8 Rb8 31.Qd5+-) 1–0. carocan (1825) – joule (1610), kurnik, 2011.

4.c4 a6 5.a4 b6 6.b5 d6 7.Nf3 Be7?? 8.Be2?? h6? 9.d4 Nd7 10.0-0 c5 11.Nbd2 Ngf6= 12.Qc2 g5 13.Rfd1 g4 14.Ne1 h5 15.e4 e5 16.d5 h4 17.Nd3 g3 18.h3 gf2 19.Nf2 Nh5 20.Nf1 Ng3 21.Ng3 hg3 22.Ng4 Nf6 23.Ne3 Nh5 24.Rf1 Nf4 25.Nf5 Bf5 26.ef5 0-0-0? 27.Bg4 Bh4 28.ba6 Kb8 29.a5! Rdg8 30.ab6 Qb6 31.Rf4! ef4 32.Bh8 Ka7 33.Bc3 Rb8 34.Qa4 Qc7 35.f6 Rb4 36.Bb4 cb4 37.Qb4 Qc5 38.Qc5 dc5 39.Rf1 Bf6 40.Rf4 Bd4 41.Kf1 Ka6 42.Rf7 Ka5 43.h4 Kb4 44.Be2 Kc3 45.h5 Kd2 46.h6 Ke3 47.h7 Ke4 48.Rf8 Bg7 49.h8Q Bh8 50.Rh8 Kd4 51.Rh3 Ke3 52.Rg3 Kd2 53.Rf3 Kc1 54.d6 Kd2 55.d7 Kc1 56.d8Q Kb2 57.Qd2 Kb1 58.Kf2 Ka1 59.Ke3 Kb1 60.Rf1# 1–0. carocan (1840) – joule, kurnik, 2011.

4.Nf3 Nf6 5.a3 h6 6.d4 a6 7.Nbd2 b6 8.c4 Bb7 9.Be2 d6 10.0-0 Nbd7 11.h3 Be7 12.c5 b5 13.Bd3 e5 14.de5 Ne5 15.Ne5 de5 16.Be4 h5 17.Bc2 0-0-0 18.Qe2 Ng4?? 19.Bf5 Kb8 20.Bg4?? hg4= 21.Qg4 f5?? 22.Qg3 f4 23.ef4 Qd7?? 24.Be5+- Ka8 25.Ne4 Qe6 26.Nd6 Rh6 27.Rae1 Rg6 28.Qf3 Qa2 29.Qe4 Re6 30.Qf5 g6 31.Qf7 Bh4 32.Qb7# 1–0. wojtekkk – joule, kurnik, 2011.

(--> 1.b4 c6 2.Bb2 d5 3.e3 e6).

4.a3 Nf6 5.Nf3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6).

4.b5 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6).

4.c4 (--> 1.b4 c6 2.c4 d5 3.e3 e6 4.Bb2).

4.c4 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6).

4.c4 Nf6 5.b5 Be7 6.a4 Bd7 7.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Bd7).

4.Nf3 Nf6 5.a3 Be7 6.d4 0-0 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

4.Nf3 d5 5.Be2 (5.a3 Nd7=) 5...Ng6 (5...Nf5 6.a3=) 6.0-0 (6.h4 A) worse is 6...Bb4 7.h5 (7.Bg7?! Rg8 8.Bb2 f6=) 7...Ne7 8.h6+/–; B) 6...h5=) 6...Bb4 7.Bg7 Rg8 8.Bc3 (8.Bb2 Bd6=) 8...Bd6+= 9.d4 Nd7 (9...b6 10.Bd2+=) 10.Nbd2= Nb6 11.a4 Nc4 (better is 11...Nh4!? 12.g3 Nf3 13.Bf3 Qf6=) 12.Bc4 dc4 13.Nc4 Bc7 14.Qe2 Bd7 (14...h6 15.Rfd1+/–) 15.Rfb1 Qe7? (better is 15...Bc8+/–) 16.Rb7+- Bd6? (16...Bc8 17.Rb2 Nh4 18.Nh4 Qh4+-) 17.Rab1 Qd8 (17...f6+-) 18.Nd6 (18.Nd6 Kf8 19.Qa6+-) 1–0. Janek – Tundja, internet, 2017.

4.Nf3 d6 5.c4 c5 6.b5 Nd7 7.Be2 Ng6 8.0-0 e5 9.a4 a5 10.d4 Be7 11.de5 de5 12.Qc2 Nf6 (12...0-0!?+=) 13.Ne5+/– Bd6 14.Rd1 Qc7 15.Nf3 0-0 (15...Ne5 16.Be5 Be5 17.b6+-) 16.Bf6 Bg4? (better is 16...gf6 17.Ra2 Rd8+-) 17.b6 Qd7 (17...Qb6 18.Bc3 Rad8+-) 18.Qd2 Bh2 19.Kh2 Qf5 (19...Qd2 20.Nbd2 gf6 21.Ne4 Bf3 22.Bf3+-) 20.Bc3 Rad8 (20...Ne5 21.Ne5 Qh5 22.Kg1 Be2 23.Re1+-) 21.Qd8 Rd8 22.Rd8 Nf8 23.Be5 Qc2 24.Bd3 Qf2 25.Bd6 h5 26.Rf8 1–0. Taulien,Hans_Juergen – Taulien,Christian, remoteschach.de, 2001.

4.Nf3 Rg8 5.Be2 g6 6.c4 d5 7.d4 Nd7 8.c5 Nf5 9.0-0 Be7 10.Nbd2 h5 11.e4 de4 12.Ne4 Nf6 13.Nf6 Bf6 14.b5 Be7 15.Re1 g5 16.Ne5 g4 17.bc6 bc6 18.Nc6 Qc7 19.Bb5 Kf8 20.d5 Bc5 21.de6 Be6 22.Rc1 Bb6 23.Ba3 Kg7 24.Bb2 Kh7 25.Be5 Qe7 26.Ne7 Ne7 27.Bd3 f5 28.Bf6 Rge8 29.Re6 Rad8 30.Re7 Kg6 31.Re8 Re8 32.Bb2 Rd8 33.Qc2 Rf8 34.Ba3 Rf7 35.Qc6 Rf6 36.Qd7 Rf7 37.Rc6 Kg5 38.Bc1 f4 39.Qf7 Bf2 40.Kf2 g3 41.Kf1 1–0. Chess4Win – VictorRUS, lichess.org, 2019.

4.a3 a5 5.b5 cb5 6.Bb5 a4 7.Ne2 Qb6 8.c4 Bc5 9.0-0 e5 10.Nbc3 h5 11.Na4 Qd6 12.Nc5 Qc5 13.d4 ed4 14.Bd4 Qg5 15.Nf4 Ne7 16.Qf3 0-0 17.a4 h4 18.Bd7 Nd7 19.Ne6 Qf5 20.Ng7 Qf3 21.gf3 Kg7 22.Kh1 Kh7 23.Rg1 Nf5 24.Rg4 Nd4 25.Rh4 Kg7 26.Rd4 Nc5 27.a5 Nb3 28.Rg1 Kf7 29.Rd5 Na5 30.Ra1 b6 31.c5 Be6 32.Rd6 bc5 33.Rb6 Nc4 34.Rb7 Kg6 35.Rg1 Kf5 36.e4 Kf4 37.Re7 Ra6 38.Reg7 Kf3 39.R7g3 Ke4 40.Re1 Kd5 0–1. Abdullaevich (1620) – TheQueenTwo, lichess.org, 2017.

4.a3 d5 5.Bd3=.

4.a3 e5 5.Bd3 (5.d4 e4+=) 5...Qb6 (5...Nh6 6.f4 ef4 7.Qh5 Nf7 8.ef4+=) 6.Qh5+= Kd8 7.Bh7 Bb4?? (better is 7...a5=) 8.ab4+- Qb4 (8...Nh6 9.Be5! Qb4 10.Bc3+-) 9.Bc3 (9.Ba3 Qc4 10.Qg6 Rh7 11.Qh7 Qf7+-) 9...Qe7 (9...Qf8+-) 10.Ba5 b6 11.Bb6! ab6 12.Ra8 1–0. Wall,Bill – SteelyTom, internet, 2004.

4.Bd3 Bb4 5.Qh5 Kf8=.

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 c6 4.e3).

4.a3 d5 5.c4 Be7 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6).

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.e3).

4.Nf3 Bb4 5.Be2 Be7 6.0-0 0-0 7.d4 d5 8.c4 Nbd7 9.Nc3 dc4 10.Bc4 Nb6 11.Be2 Qc7 12.Re1 Ng4 13.h3 Nf6 14.e4 Bb4 (14...Rd8 15.Qc2=+) 15.e5 (better 15.Bd3=+) 15...Ne4?? (better 15...Nfd5 16.Qc2 Nf4-/+) 16.Ne4+- Be1 17.Qe1 f5 (17...Nd5 18.Rb1+-) 18.Nc5 (18.ef6 gf6 19.Ba3 Rf7+-) 18...Nd5 19.Bc4 b6 20.Nd3 a6 (20...a5 21.Ba3 Re8 22.Bd6+-) 21.Ba3+- Rf7 (21...Rd8 22.Bd6 Qb7 23.Rb1+-) 22.Bd5 (better 22.Ng5!? Re7 23.Be7 Qe7+-) 22...cd5 23.Bd6 (23.Ng5 Qc4 24.Nb2 Qd4+-) 23...Qa7 (23...Qd8 24.Qc3+-) 24.Rc1 (better 24.Ng5 Rb7 25.Nf4+-) 24...Bd7? (better 24...Rb7+-) 25.Rc7 Qb8 (25...Qc7 26.Bc7 Bb5+-) 26.Rd7! Qd6 (26...Rd7 27.Bb8) 27.ed6 Rd7 28.Qe6 Kf8 1–0. Markzela (1670) – s_erge_i (1750), lichess.org, 2020.

4.a3+= Nf6 (4...d6 5.Nf3 Qh5 (5...Qd8 6.Be2 e5 7.Nc3 Nf6 8.0-0 Be7; 5...Qh6 6.d4 Nf6 7.Bd3 d5 8.Nbd2 Bd6; 5...Qg4 6.d4 Nf6 7.c4 Be7 8.h3 Qh5; 5...Qe7 6.Be2 Nf6 7.Nc3 d5 8.Ra2 e5) 6.Be2 Qg6 7.Bd3 f5 8.g4 Nf6; 4...d5 A) 5.Bd3 Nd7 (5...Qe7 6.Nf3 Nd7 7.0-0 Ngf6 8.Ne5 Ne5; 5...Qh6 6.Nf3 Nd7 7.Ra2 Bd6 8.c4 dc4; 5...Nf6 6.Nf3 Qh5 7.Be2 Nbd7 8.0-0 Bd6; 5...f6 6.Nf3 Qh5 7.Be2 Bd6 8.0-0 Ne7) 6.Nf3 Qh6 7.0-0 Bd6 8.c4 e5; B) 5.Bd4 Nd7 (5...Qe7 6.Nf3 Nd7 7.Ne5 Ne5 8.Be5 f6) 6.Nf3 Qe7 7.Bb2 e5 8.Be2 Qe6; C) 5.Nf3 Qe7 (5...Qh6 6.Be2 Bd6 7.0-0 Nd7 8.c4 dc4; 5...Qd8 6.Be2 Nf6 7.0-0 Nbd7 8.d3 a5) 6.Be2 Nd7 7.c4 Ngf6 8.cd5 Nd5; 4...Qh6 A) 5.c4 Nf6 (5...d5 6.Nf3 Nf6 7.c5 Be7 8.d4 0-0; 5...Be7 6.Nf3 Nf6 7.d4 d5 8.Nbd2 Nbd7; 5...d6 6.d4 Nf6 7.Nf3 d5 8.Nbd2 Bd6; 5...a5 6.b5 cb5 7.cb5 d5 8.Nc3 Nf6) 6.Nf3 d5 7.c5 Be7 8.d4 b6; B) 5.Nc3 d5 (5...Nf6 6.e4 d6 7.d4 Be7 8.Nf3 0-0) 6.e4 d4 7.Nce2 e5 8.Nf3 Nd7; C) 5.Nf3 d5 (5...Nf6 6.Be2 d6 7.d4 d5 8.0-0 a5; 5...Be7 6.e4 d5 7.e5 b5 8.a4 ba4) 6.Be2 Nd7 7.Nc3 e5 8.d3 Bd6; 4...Qe7 5.Nf3 Nf6 (5...d6 6.Be2 Nf6 7.b5 e5 8.0-0 a6; 5...d5 6.Be2 Nd7 7.c4 Ngf6 8.cd5 ed5) 6.Nc3 d5 7.Be2 e5 8.Nb1 e4) 5.Nf3 (5.c4 Qh6 (5...d5 6.Nf3 Qh6 7.Nc3 Bd6 8.d4 0-0; 5...Be7 6.Nf3 Qh6 7.d4 d5 8.Nbd2 Nbd7; 5...d6 6.Nf3 Qh6 7.d4 d5 8.c5 Be7; 5...Ne4 6.Qf3 Ng5 7.Qf4 Qf4 8.ef4 Ne4) 6.Nf3 d5 7.d3 Nbd7 8.Nbd2 Bd6) 5...Qe4 (5...Qh6 6.Be2+= d5 7.Be5 Qg6 8.0-0 Nbd7) 6.Nc3 (6.Bf6 gf6 7.d4 d5+= 8.c4 Qg4) 6...Qf5 (6...Qg6 7.b5+= (7.Ne5 Qh6 8.Be2 d6) 7...d6 8.h3 e5) 7.d4 (7.Bd3 Qh5 8.Ne2 d5) 7...a5 (7...d5 8.Ne5 (8.Bd3 Qh5) 8...Qh5+= (8...Qg5 9.h4+/–)) 8.b5 (better is 8.Bd3 Qg4 9.h3+/–) 8...c5? (better is 8...d5+=) 9.Na4+- cd4? (9...c4 10.Bc4 Nd5+-) 10.Nd4 (10.Bd4?! e5 11.Be5 d6 12.Bf6 Qf6+-; 10.ed4?! Ra7 11.Nb6 Kd8+-) 10...Qe5 11.Nb6 Ra7 12.Nc8 Ra8 13.Nb6 Ra7 14.Bd3 (14.Nc4 Qg5 15.b6 Ra8+-) 14...Bc5 (14...Qc7 15.Na4 b6 16.Nf3+-) 15.Na4 0-0 (15...Qd5 16.Nc5 Qc5 17.Ne6 de6 18.Bd4+-) 16.Nc6 (16.Nf3 Qc7 17.Nc5 b6+-) 16...Qg5 (16...Qb2 17.Nb2 dc6 18.Na4+-) 17.Na7 Ba7 18.b6+-. marus – lugii, internet live, 2001.

4.Bc3 A) 4...Qe7 A1) 5.Be2 d5 (5...Nf6 6.Nf3 d5 7.0-0 Nbd7 8.b5 cb5; 5...e5 6.Nf3 e4 7.Nd4 d5 8.0-0 Qh4; 5...d6 6.Nf3 e5 7.0-0 Nf6 8.a4 e4) 6.Nf3 Nf6 7.a3 Nbd7 8.0-0 e5; A2) 5.a3 Nf6 (5...d5 6.Nf3 Nf6 7.Be2 Nbd7 8.0-0 e5; 5...d6 6.d4 a6 7.Nf3 b6 8.Bd3 Nf6; 5...e5 6.Be2 d5 7.Nf3 e4 8.Ne5 Nh6) 6.Nf3 d5 7.Be2 Nbd7 8.0-0 e5; A3) 5.d4 Nf6 (5...d5 6.a3 Nf6 7.Bd3 Ne4 8.Be4 de4) 6.Bd3 Nd5 7.a3 a5 8.b5 cb5; A4) 5.b5 d5 (5...Nf6 6.Nf3 d5 7.Be2 cb5 8.Bb5 Bd7; 5...a6 6.a4 e5 7.Nf3 e4 8.Nd4 d5; 5...e5 6.Nf3 d6 7.bc6 Nc6 8.d4 e4; 5...d6 6.Nf3 e5 7.bc6 Nc6 8.d4 e4) 6.Nf3 Nd7 7.d4 Ngf6 8.bc6 bc6; A5) 5.Nf3 d5 (5...Nf6 6.Be2 d5 7.a3 Nbd7 8.0-0 e5) 6.Be2 Nd7 7.0-0 e5 8.a3 Ngf6; B) 4...d5 5.Nf3 Qh6 (5...Qe7 6.a3 Nf6 7.Be2 Nbd7 8.0-0 e5; 5...Qd8 6.Be2 Nf6 7.0-0 Ne4 8.Bb2 Bb4) 6.Be2 Bd6 7.a4 Nf6 8.b5 Nbd7; C) 4...Qh6 C1) 5.Be2 d5 (5...Nf6 6.Nf3 d5 7.d3 Bd6 8.0-0 Nbd7; 5...Be7 6.Nf3 Nf6 7.0-0 0-0 8.a3 d6; 5...d6 6.Nf3 Nf6 7.d4 d5 8.Bd2 Ne4) 6.Nf3 Bd6 7.a3 Nd7 8.b5 e5; C2) 5.Bd3 d5 (5...Nf6 6.Nf3 d5 7.a3 Nbd7 8.0-0 Bd6; 5...f6 6.Nf3 e5 7.e4 d5 8.ed5 cd5; 5...Be7 6.a3 d6 7.Ne2 Nf6 8.0-0 0-0) 6.Nf3 Bd6 7.b5 cb5 8.Bb5 Bd7; C3) 5.a3 d5 (5...d6 6.Bb2 Nf6 7.d4 a5 8.b5 Bd7; 5...Nf6 6.Nf3 Be7 7.Be2 d6 8.d4 0-0) 6.Nf3 Nd7 7.d4 Bd6 8.Bd3 Ngf6; C4) 5.Nf3 d5 (5...Nf6 6.a3 d5 7.Be5 Nbd7 8.Bf4 Qg6) 6.a3 Nf6 7.Be5 Nbd7 8.Bf4 Qg6; D) 4...Nf6 5.Nf3 Qh6 6.a3 Be7 7.Be5 d6 8.Bf4 Qg6; E) 4...Qd8 E1) 5.Be2 Nf6 (5...d5 6.Nf3 Nf6 7.0-0 Bd6 8.d3 Nbd7; 5...Ne7 6.a3 Nd5 7.Bb2 d6 8.Nf3 e5) 6.Nf3 d5 7.a3 Nbd7 8.0-0 Bd6; E2) 5.Bd3 Nf6 (5...d5 6.Nf3 Nf6 7.a3 Nbd7 8.0-0 Bd6; 5...Ne7 6.a3 d6 7.Nf3 e5 8.0-0 Nd5; 5...d6 6.Nf3 e5 7.0-0 Nf6 8.Be2 Be7) 6.Nf3 d5 7.a3 Nbd7 8.0-0 Bd6; E3) 5.a3 d5 (5...Nf6 6.Nf3 d5 7.Be2 Nbd7 8.0-0 Bd6; 5...d6 6.Nf3 e5 7.Be2 e4 8.Nd4 Qg5) 6.Be2 Nf6 7.Nf3 Nbd7 8.0-0 Bd6; E4) 5.a4 Nf6 (5...d5 6.Nf3 Nf6 7.Be2 Bd6 8.b5 Nbd7) 6.Nf3 d5 7.Be2 Bd6 8.0-0 0-0; E5) 5.Nf3 Nf6 (5...d5 6.Bd3 Nf6 7.a3 Bd6 8.0-0 Nbd7; 5...d6 6.d4 Nf6 7.Be2 d5 8.0-0 Bd6) 6.Be2 d5 7.0-0 Bd6 8.d3 0-0.

4.c4 f6 5.a3 Na6 (5...a5 6.b5+=) 6.Nf3+- Be7 7.d3 (7.Nc3 0-0+-) 7...d6 (7...d5 8.Nc3+=) 8.Nbd2 0-0 9.Qb3 d5 10.Be2 dc4 (10...c5 11.Bc3+=) 11.dc4+- Nc7 12.0-0 e5 13.Rfd1 Be6 14.Ne4 Qe8 15.Qc2 Bf5 (15...Nf5 16.h3 Qf7 17.g4+-) 16.Nh4 Ne6 (better 16...Be6!? 17.c5 Rd8+=) 17.Nf5+- Nf5 18.Bd3 (better 18.c5 Kh8 19.Rd2+-) 18...Nd6?? (better 18...Nh4 19.c5 Kh8+-) 19.Nd6 Bd6 20.Bh7 Kh8 21.Rd6 Qf7 (21...Qe7 22.c5 Rfd8+-) 22.Bg6 Qg8 23.Qe2 Ng5 24.Qh5 Nh7 25.Rd7 Rad8 (25...a6 26.Rb7 Rad8 27.f4+-) 26.Rad1 b6 27.Rd8 Rd8 (27...f5 28.Rf8 Qf8 29.Qh7) 28.Rd8 Qd8 29.Qh7 1–0. UncleBulgaria (2405) – chytros (1655), ChessWorld.net, 2014.

4.Nf3 d5 5.c4 Nd7 6.a4 (6.a3 Nf6=) 6...dc4 7.Bc4 Nf5 8.0-0 (8.b5!?=) 8...Bb4=+ 9.Qb3 Bd6 (better 9...Ba5!?=+) 10.Be6+= fe6 11.Qe6 The passed pawn on e3 will quickly become a dangerous weapon. Theme: Double At 11...Kf8 (better 11...Qe7!? 12.Qf5 Ne5+=) 12.Qf5+- Nf6 13.Qc2 Bg4 14.Nd4 (14.Ne5 Be6+-) 14...c5 15.Nb5 a6 (15...Be7!?+-) 16.Nd6+- Qd6 17.h3 Be2 (better 17...Be6+-) 18.Re1 (better 18.Rc1+-) 18...Bd3+- 19.Qb3 Qd5 (19...b6 20.Na3+-) 20.Qd5 (20.Qb6 Nd7 21.Qc7 Qc6 22.Qc6 bc6+-) 20...Nd5 21.Nc3 (21.Ba3 Rc8+-) 21...Nc3 (21...Nb4!? 22.Rec1 Nc2+=) 22.Bc3 Re8 23.f4 Kg8 (23...Re4 24.Ra3 c4 25.Ra2+-) 24.Kf2 b6 25.Ra3 c4 26.g4 a5 (26...h5 27.g5+=) 27.h4 Re7 (27...h5 28.g5+-) 28.f5 (better 28.h5!?+-) 28...Kf7 29.Kg3 (29.Ra2 h5 30.Rg1 Rh7+-) 29...h5+= 30.g5 (30.f6 Re4 31.fg7 Rg4 32.Kf2 Rb8=) 30...Bf5= 31.Bd4 Re6 (31...Rb8 32.Kf4 Be4 33.Kg3=+) 32.Rc3 (better 32.Rf1!? Kg6 33.Bg7+-) 32...Bd3= 33.Ra1 Rf8 34.Ra2? (34.Rd3 cd3 35.Rf1 Kg8 36.Rf8 Kf8-/+) 34...Rc6?? (better 34...Re4 35.Rd3 cd3 36.Bb6 Rg4 37.Kh3 Ke6-+) 35.Rb2= Attacking the backward pawn on b6 35...Rb8 36.Kf4 Re6 37.Rb5 (37.Kg3 Rb7=) 37...Rb7 (37...Re4 38.Kg3=+) 38.Re5 Re5 39.Ke5 Re7 (39...b5!? 40.ab5 Rb5 41.Kd6 a4=) 40.Kd5+= Rd7 41.Kc6 Ke6 (41...Re7 42.Bb6 Re6 43.Kb7 Re7 44.Bc7+=) 42.Kb6+- Rf7 (42...Kf5!? 43.Ka5 Kg4+-) 43.Ka5+- Rf5 (better 43...Rf2+-) 44.Kb4 Rf2 45.Bg7 (45.a5 Rd2 46.Ra3 Rh2+-) 45...Kd5 (45...Rd2 46.a5 (46.Rc4?! Bc4 47.Kc4 Rh2+-) 46...Rb2 47.Ka4+-) 46.a5 Rd2 (46...Rf1 47.a6 Rb1 48.Ka4+-) 47.Ra3 Rh2 48.a6 Ke4 (48...Ke6+-) 49.a7 Ke3 50.a8Q Rh4 51.Qe8 (51.Bh6 c3 52.Kc3 Rc4 53.Kb3 Rf4+-) 51...Kf4 52.Qe5 Kg4 53.g6! c3 (53...Bg6 54.Rg3 A double attack) 54.Qd4 (54.Rc3 Kh3 55.Ka5 Re4 56.Rd3 Kg2 57.Qe4 Kf1 58.Rd2 h4 59.Qh1) 54...Kh3 55.Kc3 (55.Rc3 Rd4 56.Bd4 Kg4 57.Rd3 Kf5 58.g7 h4 59.g8Q h3 60.Rg3 Ke4 61.Kc5 h2 62.Qg4) 55...Rd4 56.Kd4 h4 (56...Kg4 57.Kd3 Kh4 58.Bd4 Kg4 59.g7 h4 60.g8Q Kf3 61.Ra8 h3 62.Rf8) 57.Rd3 Kg4 (57...Kg2 58.Bf6 Kg1 59.g7 Kf1 60.Rd1 Ke2 61.g8Q Kd1 62.Kd3 h3 63.Qg1) 58.Be5 h3 (58...Kg5 59.g7 Kg4 60.g8Q Kh5 61.Bf4 h3 62.Rh3) 59.g7 Kf5 (59...Kh4 60.g8Q h2 61.Qh7 Kg4 62.Rg3) 60.g8Q h2 61.Rf3 1–0. retiponziani (1875) – Watfordlover, ChessWorld.net, 2015.

4.Bg7 Nf6 5.Bh8 Ne4 6.Qg4+-.

4.Bg7 Qh4 5.Qf3 f6 6.Bh8 Bd6 7.Qe3 Bf4 8.g3 Be3 9.gh4 Bd4 10.c3 Be5 11.d4 Bf4 12.Ne2 Bh6 13.e5 f5 14.Rg1 Kf7 15.Nd2 d5 16.Nf3 Nd7 17.Ng5 Kf8 18.Ne6 Kf7 19.Nc7 Rb8 20.e6 Kf8 21.ed7 Bd7 22.Be5 Rc8 23.Bd6 Kf7 24.c4! dc4 25.Nf4 b5 26.Be2 Nf6 27.Bh5 Nh5 28.Nh5 c3 29.f4 a5 30.Rg3 b4 31.0-0-0 c5 32.Re1 Bf8 33.Bf8 Kf8+- 34.Rg7 Rc7 35.Ree7 Be8 36.Rc7 Bh5 37.Rh7 (37.Rh7 Kg8 38.Rh5 b3 39.Rc5 (39.dc5?! ba2 40.Rg5 Kh8 41.Rc8 Kh7 42.Rh5 Kg6+/–) 39...ba2 40.Ra5 Kg7 41.Ra2 Kg6 42.Rg5 Kf7 43.Rf5 Ke6 44.Re5 Kd6 45.Ra6 Kd7 46.Rg5 Kc7 47.Rg7 Kb8 48.Re6 Kc8 49.Re8#) 1–0. slagveld (1715) – lilgia, internet, 2007.

4.ed5 ed5 5.a3=.

5.a3 Nf6 6.Nf3 Bd6 7.Nc3 0-0 8.Be2 (8.Nb5 Be7= 9.Bd3 (9.Be5 Nc6 10.Bc7 Qd7 11.Ne5 Ne5 12.Be5) 9...a6 10.Nbd4 Re8 11.Ne5 Bd6 12.f4) 8...b6 (8...a6 9.0-0+= (9.d4 Nh5 10.0-0 Nf4 11.Bc1 Qc7 12.Bf4; 9.Na4 Nc6 10.0-0 e5 11.Re1 d4 12.Ng5; 9.Nb1 Nc6 10.d3 b6 11.c4 e5 12.b5; 9.Na2 Nc6 10.0-0 e5 11.Re1 Qc7 12.b5) 9...e5 10.Re1 Qc7 11.h3 d4 12.Na2; 8...a5 9.Nb5 (9.ba5 Bd7 10.a4 Bc5 11.0-0 Ra5 12.Nb5) 9...Be7 10.ba5 Qa5 11.0-0 Ne4 12.Rb1; 8...Nc6 9.0-0 a6 10.Re1 d4 11.Nb1 e5 12.c3) 9.0-0 (9.Nb5 Be7= 10.0-0 a6 11.Nbd4 Bd6 12.Nb3) 9...Bb7 (9...a6 10.Na4= (10.d4 Qc7 11.Re1 b5 12.Bd3) 10...Nbd7 11.Re1 e5 12.Nh4) 10.d4 (10.Nb5 Be7= 11.Re1 a5 12.Be5) 10...Nbd7 (10...a6 11.Re1 Qc7 12.Bd3) 11.Bd3 Ne4 (11...a6 12.b5=) 12.Qe2 (12.Re1=) 12...Nc3 13.Bc3 Rc8 (13...Qc7 14.Bb2=) 14.Bd2 Nf6 (14...Qc7 15.Rfe1=) 15.Bg5 Qc7 16.Bf6 gf6 17.Nh4 (better is 17.Rfd1!?+=) 17...Bh2-/+ 18.Kh1 Bf4 19.Qh5 f5 20.g4 (20.g3 Bd2 21.Nf3 Bc3 22.Qg5 Kh8 23.Qf6 Kg8 24.Qg5 Kh8 25.Qf6 Kg8 26.Qg5=) 20...Kh8+= 21.Nf3 f6 22.gf5 e5 23.Nh4 Rg8 (23...Kg8 24.Rg1 Bg5 25.Rg5 fg5 26.Qg5 Kh8 27.Qh6+=) 24.Ng6+/– Kg7 25.Rg1 Bg5 26.Ne5! Kf8 (26...fe5 27.Rg5) 27.Rae1 fe5? (better is 27...Rg7+/–) 28.Rg5+- Rg5 29.Qg5 e4 (29...Qg7 30.Qg7 Kg7 31.de5 d4 32.Kh2 Kf7+-) 30.Rg1 Qf7 31.Bb5 Bc6 32.Qh6 Ke7 33.Rg7 (33.Rg7 Rc7 34.Bc6 Rc6 35.Rf7 Kf7 36.Qc6+-; 33.Bc6?! Rc6 34.Qh4 Kd7=) 1–0. Blankenberg,Bruno (1960) – Meisinger,Peter (1710), DESC, 2000.

5.a3 Nf6 6.Nf3 Bd6 7.Nc3 a6 A) 8.Bd3 e5 9.Be2 Qc7 10.Na4 0-0 11.d4 e4 12.Ne5; B) 8.Be2 B1) 8...0-0 9.0-0 (9.Rc1 e5 10.0-0 Qc7 11.h3 b5 12.d4; 9.Nb1 Nc6 10.0-0 e5 11.Re1 Qc7 12.b5) 9...e5 10.Re1 Qc7 11.h3 d4 12.Na2; B2) 8...Qc7 9.Qb1 (9.0-0 e5 10.d4 e4 11.Ne5 0-0 12.Qd2; 9.Rb1 e5 10.Na4 0-0 11.Rc1 Nc6 12.d4; 9.h3 e5 10.d4 e4 11.Ne5 0-0 12.Ng4; 9.Rc1 e5 10.Na2 Nc6 11.b5 ab5 12.Nc3) 9...e5 10.Nd1 0-0 11.h3 b5 12.0-0; B3) 8...e5 9.0-0 (9.Na4 Qc7 10.Rb1 0-0 11.d4 e4 12.Ne5) 9...Qc7 10.d4 e4 11.Ne5 0-0 12.Qd2; C) 8.Ne2+= C1) 8...Nbd7 9.Ng3 (9.Ned4 0-0 10.Bd3 e5 11.Nf5 Bc7 12.Be2; 9.Nc1 e5 10.Be2 0-0 11.0-0 a5 12.b5) 9...0-0 10.Be2 b6 11.0-0 Qc7 12.Re1; C2) 8...0-0 9.Ng3 (9.Be5 Be5 10.Ne5 Qc7 11.d4 Bd7 12.Rc1) 9...Nc6 10.Be2 e5 11.0-0 Re8 12.Re1.

5.a3 Nf6 6.Nf3 Bd6 7.Nc3 Nc6 A) 8.Be2 A1) 8...e5 9.Nb5 Bb8 10.d4 e4 11.Ne5 0-0 12.c4; A2) 8...a6 9.0-0 (9.b5 Ne5 10.Ne5 Be5 11.Bd3 0-0 12.Rb1) 9...d4 10.Na2 0-0 11.Re1 e5 12.c3; A3) 8...Bf4 9.0-0 (9.g3 Bd6 10.Nb5 Be7 11.Nbd4 0-0 12.0-0; 9.Bd3 0-0 10.0-0 Ne5 11.Ne5 Be5 12.Re1; 9.b5 Ne5 10.g3 Nf3 11.Bf3 Bd6 12.Qe2; 9.Na4 0-0 10.0-0 a6 11.Nc5 Bd6 12.Re1) 9...0-0 10.Re1 a6 11.Bd3 b5 12.Ne2; A4) 8...0-0 9.0-0 a6 10.Re1 d4 11.Nb1 e5 12.c3; B) 8.Bb5 B1) 8...a5 9.ba5 Ra5 10.0-0 0-0 11.Be2 d4 12.Nb5; B2) 8...Bd7 9.0-0 (9.Qe2 0-0 10.0-0 a6 11.Bc6 Bc6 12.Rfe1; 9.Ba4 0-0 10.0-0 d4 11.Nb5 Bb8 12.c3; 9.Bc6 Bc6 10.Qe2 0-0 11.0-0 Qc7 12.Rfe1; 9.Bd3 0-0 10.0-0 e5 11.Nb5 Bb8 12.Ng5) 9...0-0 10.Re1 a6 11.Bc6 Bc6 12.Qe2; B3) 8...0-0 9.0-0 e5 10.Re1 e4 11.Bc6 bc6 12.Nd4; C) 8.Nb5 C1) 8...Be7 9.Be2 (9.Nbd4 a5 10.b5 Nd4 11.Bd4 Bd6 12.Ne5; 9.Rb1 0-0 10.Be2 a5 11.ba5 Qa5 12.0-0; 9.Bd3 a5 10.ba5 0-0 11.0-0 Ra5 12.Qe2) 9...a5 10.ba5 0-0 11.0-0 Qa5 12.Re1; C2) 8...Bf4 9.Nbd4 (9.Bd3 a5 10.Nbd4 Bd6 11.Nc6 bc6 12.Ne5; 9.Be2 0-0 10.Nbd4 Nd4 11.Bd4 a5 12.0-0; 9.g3 Bb8 10.Nbd4 Nd4 11.Bd4 0-0 12.Ne5) 9...Nd4 10.Bd4 0-0 11.Be2 a5 12.0-0.

6.a3 Be7 7.Nc3 a6 8.d4 0-0 9.Ne5 Nbd7 10.Bd3 Ne5 11.de5 Nd7 12.Qh5 g6 13.Qe2 Re8 14.0-0 b5 15.Rfe1 Nb6 16.Qf3 Bd7 17.Nd1 Nc4 18.Bc4 bc4 19.Ne3 a5 20.Ng4 ab4 21.Nh6 Kg7 22.Qf7 Kh6?? (better is 22...Kh8 23.ab4 Rc8+- (23...Bb4 24.Ra8 Bc5 25.Rd8 Bf2 26.Kf2 Rd8 27.Qf6)) 23.Re3+- Bh4 24.Rh3 g5 (24...Qf6 25.Qf6 ba3 26.Rh4) 25.Rh4! gh4 (25...gh4 26.Bc1 Mate attack) 26.Bc1 Qg5 27.Qf6 Kh5 28.Qg5# 1–0. Idelis – Mrchess, playchess.de, 2004.

7.Bd3 0-0 8.0-0 Re8 (8...a5 9.b5 (9.ba5 Nc6 10.Qe2 Ra5 11.Bc3 Ra8 12.Bb2) 9...Nbd7 10.Qe2 Nh5 11.Qe3 Nf4 12.Re1; 8...Nbd7 9.Qe2 (9.Re1 a5 10.ba5 Qa5 11.Qe2 b6 12.Nc3; 9.Nc3 Ne5 10.Ne5 Be5 11.Re1 Bf4 12.Ne2) 9...a5 10.b5 Re8 11.Ne5 Qc7 12.f4; 8...Nh5 9.Qe1 (9.Qe2 Nf4 10.Qe3 f6 11.Nc3 a5 12.b5; 9.Re1 Nf4 10.Bf1 Nc6 11.Nc3 Re8 12.g3; 9.g3 Nf6 10.Re1 a5 11.ba5 Ra5 12.Bc3; 9.Bb5 Nf4 10.Re1 a5 11.ba5 Ra5 12.Bf1) 9...Nf4 10.Qe3 f6 11.Nc3 a5 12.b5; 8...a6 9.Re1 (9.Qe2 Nc6 10.Ne5 a5 11.b5 Ne5 12.Be5; 9.Ne5 b5 10.Qe2 Nbd7 11.Re1 Ne5 12.Be5) 9...Nc6 10.Ra2 b5 11.Ra1 Bb7 12.Qe2) 9.Re1 (9.Ne5 Nbd7 10.Re1 Ne5 11.Be5 a5 12.b5) 9...Bd7 (9...a5 10.b5= (10.ba5 Nc6 11.Bb5 Ra5 12.Bc6) 10...Nbd7 11.Ne5 Ne5 12.Be5) 10.Ne5 (10.Ra2 a6= 11.Be5 Be5 12.Ne5) 10...a6 (10...Qc7 11.Qe2 Rc8 12.Nf3) 11.Qf3 (11.c4 Be5 12.Be5) 11...Nc6 (11...Qc7!?= 12.Qe3) 12.Bh7+= Kh7 13.Nf7 Qe7 (13...Qc7 14.Qd3 Kg8 15.Nd6 Rf8+-) 14.Qd3+/– Kg8 (14...g6 15.Nd6 Qd6 16.Bf6+/–) 15.Nd6 Qd6 16.Bf6 gf6?? (better is 16...e5 17.Bh4 Nd4+=) 17.Qg6+- Kf8 18.Qf6 Kg8 19.Re3 Qe7 (19...Re7 20.Rg3 Qg3 21.hg3 Rf8 22.Qg6 Rg7+-) 20.Rg3 Kh7 21.Rh3 (21.Rh3 Kg8 22.Rh8) 1–0. marekt – Edgarri, ChessWorld.net, 2003.

7.Bd3 0-0 8.Qe2 A) 8...a5 9.b5 Nbd7 10.0-0 Nh5 11.Qe3 Nf4 12.Re1; B) 8...Nbd7 9.0-0 a5 10.b5 Qc7 11.c4 dc4 12.Bc4; C) 8...a6 9.0-0 (9.Ne5 Qc7 10.0-0 Nbd7 11.f4 a5 12.b5) 9...Nc6 10.Ne5 Ne5 11.Be5 b6 12.Nc3; D) 8...Nh5 9.0-0 (9.g3 Nf6 10.0-0 a5 11.b5 Nbd7 12.Ne5; 9.Qe3 Nf4 10.Bf1 Nd7 11.g3 Ng6 12.Nc3) 9...Nf4 10.Qe3 f6 11.Nc3 a5 12.Bb5.

7.Bd3 a5 A) 8.ba5 A1) 8...Nc6 9.0-0 (9.Qe2 0-0 10.0-0 Ra5 11.Bc3 Ra8 12.Bb5) 9...e5 10.Re1 e4 11.Nd4 0-0 12.Be2; A2) 8...Ra5 9.0-0 (9.Qe2 0-0 10.Bc3 Ra4 11.0-0 Ne4 12.Bb2; 9.Bc3 Ra8 10.0-0 Nc6 11.Qe2 d4 12.Bd4) 9...0-0 10.Qe2 Nc6 11.Bc3 Ra8 12.Bb5; A3) 8...Qa5 9.Bf6 (9.Bc3 Qd8 10.0-0 0-0 11.Qe2 Nc6 12.Nd4; 9.Nc3 0-0 10.Nb5 Be7 11.0-0 Na6 12.Bc3; 9.0-0 Nbd7 10.Re1 0-0 11.Qe2 b6 12.Nc3; 9.Qe2 Nbd7 10.0-0 0-0 11.Nc3 Nc5 12.Nb5) 9...gf6 10.Nc3 Nc6 11.Nb5 Bc5 12.0-0; A4) 8...Nbd7 9.0-0 (9.Qe2 Qa5 10.0-0 0-0 11.Nc3 Nc5 12.Nb5) 9...0-0 10.Re1 Qa5 11.Qe2 b6 12.Nc3; A5) 8...0-0 9.0-0 Nc6 10.Re1 Ra5 11.Nd4 Bd7 12.Nf3; B) 8.b5 B1) 8...Nh5 9.0-0 (9.Be2 Nf4 10.0-0 0-0 11.Re1 Nd7 12.Bf1; 9.Ne5 Be5 10.Be5 Qg5 11.Bb8 Rb8 12.0-0; 9.g3 Nd7 10.0-0 0-0 11.Re1 Nhf6 12.Ne5) 9...Nf4 10.Be2 0-0 11.Re1 Nd7 12.Nc3; B2) 8...0-0 9.0-0 (9.Qe2 e5 10.Ne5 Re8 11.f4 Ng4 12.h3) 9...Nbd7 10.Qe2 Nc5 11.Be5 Be5 12.Ne5; B3) 8...Nbd7 9.Qe2 0-0 10.0-0 Nh5 11.Qe3 Nf4 12.Re1.

7.Bd3 a6 A) 8.Qe2 A1) 8...Nc6 9.0-0 (9.Nc3 b5 10.0-0 0-0 11.Rfe1 Bb7 12.Na2) 9...0-0 10.Ne5 Ne5 11.Be5 a5 12.b5; A2) 8...b5 9.0-0 (9.Ne5 0-0 10.0-0 Nbd7 11.Re1 Ne5 12.Be5; 9.a4 ba4 10.Ra4 0-0 11.b5 Nfd7 12.0-0; 9.Be5 Nc6 10.Bb2 0-0 11.0-0 Nh5 12.g3; 9.Qe3 0-0 10.0-0 Nc6 11.Qg5 h6 12.Bf6) 9...Nc6 10.Nd4 Nd4 11.Bd4 Qc7 12.h3; A3) 8...a5 9.b5 (9.ba5 0-0 10.Bc3 Nc6 11.0-0 d4 12.Bb4) 9...Nbd7 10.0-0 0-0 11.Ne5 Qc7 12.f4; A4) 8...b6 9.0-0 (9.Nc3 0-0 10.0-0 Qc7 11.Rae1 Nbd7 12.Nd1; 9.Ne5 0-0 10.0-0 Qc7 11.Qe3 a5 12.b5; 9.Ra2 0-0 10.0-0 Nc6 11.Rc1 Nh5 12.Qe3) 9...0-0 10.Re1 Nc6 11.b5 ab5 12.Bb5; A5) 8...0-0 9.0-0 (9.Ne5 Nbd7 10.0-0 Ne5 11.Be5 a5 12.b5) 9...Nc6 10.Ne5 Re8 11.Re1 Be5 12.Be5; B) 8.Ne5 B1) 8...Nbd7 9.Qe2 Ne5 10.Be5 Qc7 11.Bd6 Qd6 12.Qe3; B2) 8...Nc6 9.Nc6 (9.Qe2 a5 10.b5 Ne5 11.Be5 Qc7 12.Bd6) 9...bc6 10.c4 dc4 11.Bc4 c5 12.Qf3; B3) 8...0-0 9.0-0 (9.Qe2 Qc7 10.0-0 Bd7 11.Re1 Rc8 12.Nf3) 9...Nc6 10.Qe2 Ne5 11.Be5 a5 12.b5; B4) 8...Qc7 9.Qe2 Nbd7 10.f4 0-0 11.0-0 a5 12.b5; B5) 8...a5 9.ba5 (9.b5 Nbd7 10.Qe2 0-0 11.0-0 Qc7 12.f4) 9...Nbd7 10.Nd7 Bd7 11.Bc3 0-0 12.0-0; C) 8.0-0 C1) 8...Nc6 9.Re1 (9.Qe2 0-0 10.Ne5 a5 11.b5 Ne5 12.Be5) 9...0-0 10.Ne5 Ne5 11.Be5 Be5 12.Re5; C2) 8...b5 9.Re1 (9.Ne5 Nbd7 10.f4 Qb6 11.Kh1 0-0 12.Qe1; 9.Qe2 Nc6 10.Nd4 Nd4 11.Bd4 Qc7 12.h3) 9...0-0 10.Qe2 Nc6 11.Ne5 Bb7 12.Nc6; C3) 8...b6 9.Re1 (9.Qe2 0-0 10.Nc3 Re8 11.Rfe1 Nbd7 12.Rab1; 9.Ne5 0-0 10.Bd4 Qc7 11.f4 a5 12.b5; 9.Nc3 0-0 10.Qe2 Nbd7 11.Rae1 e5 12.Bf5; 9.Be2 Nbd7 10.Re1 0-0 11.d4 Qc7 12.Bd3) 9...0-0 10.Nc3 Qc7 11.Qe2 Nbd7 12.Rab1; C4) 8...0-0 9.Re1 (9.Ne5 Nbd7 10.f4 a5 11.b5 Nc5 12.Be2; 9.Qe2 Nc6 10.Ne5 Ne5 11.Be5 b6 12.Nc3; 9.Qe1 Nbd7 10.Ne5 a5 11.b5 Qc7 12.f4; 9.Ra2 Nc6 10.Qe2 Re8 11.Ne5 d4 12.f4) 9...Nc6 10.Ne5 Ne5 11.Be5 Be5 12.Re5.

7.Bd3 Nbd7 A) 8.0-0 e5 9.Nh4 0-0 10.Nf5 Bc7 11.Re1 e4 12.Be2; B) 8.Qe2 B1) 8...0-0 9.0-0 (9.Nc3 e5 10.Nb5 Bb8 11.Bf5 d4 12.a4) 9...Re8 10.Ne5 a5 11.b5 Qc7 12.f4; B2) 8...Nh5 9.0-0 (9.Qe3 Nf4 10.0-0 0-0 11.Bb5 Qc7 12.Bd7) 9...Nf4 10.Qe3 0-0 11.Bb5 Qc7 12.Bd7; B3) 8...a5 9.b5 (9.Nd4 ab4 10.Nf5 Bf8 11.ab4 Ra1 12.Ba1; 9.ba5 0-0 10.0-0 Qa5 11.Nc3 Nc5 12.Nb5) 9...Nh5 10.g3 Nhf6 11.0-0 Nc5 12.Re1; C) 8.Nc3 C1) 8...e5 9.Qe2 (9.Nb5 Bb8 10.Bf5 e4 11.Qe2 0-0 12.Ng5; 9.Nh4 e4 10.Nf5 Be5 11.Bb5 0-0 12.d4) 9...0-0 10.Nb5 Bb8 11.Bf5 e4 12.Ng5; C2) 8...a5 9.Nb5 (9.Qb1 0-0 10.0-0 Ne5 11.Ne5 Be5 12.Nb5) 9...Be7 10.ba5 0-0 11.Bc3 Ne4 12.Bb4; C3) 8...Ne5 9.Ne5 (9.Qe2 Nf3 10.Qf3 0-0 11.0-0 Bd7 12.Nb5) 9...Be5 10.Qe2 Bd4 11.0-0 e5 12.Na4; C4) 8...a6 9.0-0 (9.Qe2 Qc7 10.0-0 0-0 11.Rfc1 e5 12.Bf5) 9...0-0 10.Re1 Qc7 11.h3 e5 12.Nh4; C5) 8...0-0 9.0-0 (9.Qe2 e5 10.Nb5 Bb8 11.Bf5 d4 12.a4) 9...Ne5 10.Ne5 Be5 11.Re1 Bf4 12.Ne2.

4.a3 ab4 5.ab4 Ra1 6.Ba1 Qb6 7.c3 Nf6 8.e3 d6 9.Be2 Qa7 10.Bb2 h5 (10...Be7!?=) 11.0-0+= h4 12.h3 Ne4 (12...e5 13.Na3+=) 13.Qc2 f5 14.Na3 b5 15.Ra1 Qb7 16.c4 bc4 17.Nc4 Rh6 (17...Bd7 18.Bd4 d5 19.Na5+-) 18.d3 Nf6 19.Na5 Qd7 (19...Qb6 20.Bd4 Qc7 21.Nc4+/–) 20.Nd4+- g5 (20...c5 21.bc5 dc5+-) 21.Ndc6 Na6? (21...Nc6 22.Nc6 Bb7 23.Bf6 Qc6 24.Qc6 Bc6 25.Bg5 Rh7+-) 22.Bf6 Rf6 23.Bh5 Rf7 24.Qc3 g4 (24...e5+-) 25.Qf6 Nc7 26.Bf7 Qf7 27.Qd8 1–0. Efimov,Andrey (2085) – Roshin,Sergey, 53rd RTNG, 2010.

4.b5 cb5 5.Na3 (5.e4 b4=) 5...b4+= 6.Nb5 Qb6 (6...d6 7.e4+=) 7.e4 Nc6 (7...Nf6 8.Bd4 Bc5 9.e5=) 8.Bc4 (8.Nd6 Ke7 9.e5 f6+/–) 8...f6 (8...a4 9.Nd6 Ke7 10.Nc8 Rc8 11.0-0=) 9.0-0 (9.Rb1 Be7=) 9...Bc5 (9...Be7 10.Nfd4=) 10.d4 Be7 11.d5 (better is 11.Qe2+=) 11...ed5 (11...Na7!? 12.Na7 Ra7+=) 12.ed5 (12.Qd5 Nh6+/–) 12...Na7 13.Bd4 Bc5 14.Qe2 (worse is 14.Na7 Ra7 15.Re1 Kd8+=) 14...Ne7 (14...Kd8 15.Qe3 Bd4 16.Nfd4 Nb5 17.Ne6 Qe6 18.de6 de6 19.Qb6 Ke7 20.Bb5 Kf7+-) 15.d6! (worse is 15.Na7 Bd4 16.Nd4 Qd4+-) 15...Bd4 (15...Bd6 16.Bb6 Pinning (16.Bb6 Deflection)) 16.Qe7 (16.Nbd4?! Qd6 17.Rfe1 Nac6+=; 16.Nfd4 Qd6 17.Nd6 Kd8 18.Nf7 Kc7 19.Qe7 b6 20.Bd5 Ba6 21.Qd6 Kc8 22.Qb6 Nb5 23.Nb5 Bb5 24.Nd6) 1–0. marre – omfw, internet, 2010.

4.Bg7+- Qe7 5.Bh8 f6 6.a3 Bc5 7.e3 d5 8.Bd3 Nh6 9.0-0 Qf8 10.Bh7 Qh8 11.Bd3 e5 12.Bg6 Ke7 13.Nh4 Bg4 14.f3 Be6 15.Nc3 f5 16.a4 Kf6? 17.a5 Ng8 18.g3?? Ne7+/– 19.d4 Bd6 20.f4 ef4+= 21.ef4 Ng6= 22.Nf3 Nd7 23.Rb1= b6 24.ab6 Nb6 25.Ra1 Nc4=+ 26.Qd3 a5 27.Ra4? Rg8 28.Kf2 Nb2-+ 29.Qe3 Na4 30.Na4 Rc8 31.Nb6 Rb8 32.Na4 Rb4 33.Nc3 a4 34.Ra1 Qa8 35.Ng5 Bd7 36.Na2 Rb2 37.Qc3 a3 38.Nh7 Kg7 39.Ng5 Qa4 40.Nf3 Rc2 41.Ke3 Rc3 42.Nc3 Qb3 43.Kd3 Bb4 44.Rc1 a2 45.Ra1 Qc3 46.Ke2 Qa1 47.Kf2 Qb2 48.Ke3 a1Q 49.Nd2 Qd2 50.Kf3 Qf1# 0–1. gordiemac – maftei, ChessWorld.net, 2009.

4.Bg7+- Nf6 5.Bh8 Ke7 6.Bf6 Kf6 7.c3 Bd6 8.d4 Ke7 9.e4 Qg8 10.e5 Bc7 11.Na3 d6 12.Nh4 b5 13.c4 Ba5 14.Ke2 Qg4 15.Nf3?? Bb4 16.Nc2 Qe4 17.Ne3 bc4 18.Rb1 Ba3 19.Ng5 Qg6 20.Nf3 Ba6?? 21.h3 c3 22.Ke1 Bf1 23.Rb7 Nd7 24.Kf1 Rb8 25.Ra7 Rb1+/– 26.Qb1?? Qb1-/+ 27.Ne1 Bc1 28.N3c2?? Qb5 29.Kg1 Qb1 30.Kh2 Bf4 31.g3= Bd2 32.a3?? Be1 33.Ne1 Qb2 34.a4?? Qf2 35.Ng2 c2 36.Rb7 Qd2 37.h4 c1Q 38.Rc1 Qc1 39.Nf4 Qd2 40.Kh3 Qd4 41.a5 Qc4 42.ed6 Kd6 43.Nh5 Qa6 44.Rb1-+ Qa5 45.Rd1 Ke7 46.Nf4 Qf5 47.g4 Qf4 48.Ra1 f5 49.g5 Qf3 50.Kh2 Qe2 51.Kg1 Qg4 52.Kf2 Qh4 53.Ke2 f4 54.Ra3 e5 55.Ra5 Qg4 56.Kd2 f3 57.Ke3 Qf4 58.Kd3 f2 59.Kc3 Qc1 60.Kd3 f1Q 61.Ke4 Qff4 62.Kd3 Qcd2# (62...Qfe3#) 0–1. gordiemac – Eries, ChessWorld.net, 2009.

4.a3 a5 5.c3 ab4 6.cb4 f6 7.d4 Ne7 8.e3 Nf5 9.Nbd2 Be7 10.Bd3 0-0 11.0-0 Nd6 12.Qc2 g6 (12...f5 13.Rfc1+=) 13.Nc4 (better is 13.Bg6 f5 14.Bh5+-) 13...Nc4+= 14.Bc4 Qc7 15.h3 d6 16.e4 d5 17.ed5 ed5? (better is 17...cd5 18.Bd3 Qc2 19.Bc2 Bd6=) 18.Bd5!+/– Kg7 (18...cd5 19.Qc7 Pinning (19.Qc7 Deflection; 19.Qc7 Clearance)) 19.Be4 Qf4 20.Bc1 Qd6 21.Qd2 f5 22.Bc2 Bd8 (22...f4!?+/–) 23.Qh6+- Kf6?? (better is 23...Kg8+-) 24.Bb2 (better is 24.Re1 Rh8 25.Ne5 Qe5 26.Re5+-) 24...Kf7 25.Rfe1 Rh8 (25...Be7 26.Ng5 Ke8 27.Nh7 Rf7+-) 26.Bb3 Be6 27.Be6 Kf6 28.d5 Ke7 (28...Qe5 29.Be5 Ke7 30.Qg7 Ke8 31.Qf7) 29.Qg7 Ke8 30.Qf7 1–0. Fournier,Frederic (1605) – Drmojamed, Active, 2007.

4.a3 a5 5.c3 d5 6.e3 Nf6 7.Be2 Be7 8.0-0 0-0 9.d3 Nbd7 10.Nbd2 e5 11.Nb3 a4 12.Nbd2 Re8 13.c4 e4 14.de4 de4 15.Ng5 Bf8? (better 15...c5!? 16.Bc3 cb4 17.ab4 Bb4+=) 16.Qc2 c5 17.b5 Ne5 18.Nge4 Ne4 19.Ne4 Bf5 20.f3 Qe6 21.Qc3 Be4 22.fe4 b6 23.Rf5 f6 24.Rd1 Nf7 25.Bf3 Rad8 26.Rdd5 Nd6 The isolani on e4 becomes a target 27.Rf4 Nc8? (better 27...Nf7 28.Bg4 Qe7+/-) 28.Rff5 (better 28.Bg4 Qe7 29.Qd3+-) 28...Bd6 29.Qc2 Bb8?? (better 29...Ne7!? 30.Rh5 Nd5 31.cd5 Qf7=+) 30.Qa4 (30.Rd8!? Rd8 31.Rd5+- (31.Qa4?! Ne7 32.Rh5 g6+=)) 30...Ne7+/- 31.Rh5 Nd5 32.Rd5 Be5 33.Be5 fe5 34.Qd1 Rd5 35.ed5 (worse 35.Qd5 Qd5 36.ed5 Ra8-/+) 35...Qd6 36.Bg4 ½-½. pacalmisu (2420) - lollo9619 (2415), Rated blitz game, lichess.org, 2016.

4.a3 a5 5.c3 Nf6 6.e3 d5 7.Be2 Bd6 8.0-0 Nbd7 9.d3 c5 10.Nbd2 ab4 11.cb4 cb4 12.ab4 Ra1 13.Qa1 Qb4 14.Rb1 Qc5?? (14...e5 15.h3+/-) 15.Nb3 (better 15.Rc1 Qc1 16.Qc1+-) 15...Qc7 16.Nbd4 0-0? (better 16...Qd8+/-) 17.Nb5+- Qb8 18.Nd6 Qd6 19.Ba3 Qc7 20.Bf8 Nf8 21.Rc1 Qd6 (21...Qb8 22.Qe5 Qe5 23.Ne5+-) 22.Qe5 (22.Rc8 N6d7+-) 22...Qa3 (22...Qe5 23.Ne5 Bd7 24.d4+-) 23.Qc7 (better 23.Rc8 b6 24.Qc7+-) 23...Bd7 24.Ne5 Qb2 25.Bf3 g5 26.h3 h5 27.Qc3 Qb6 28.d4 Kg7 29.Qd3 Bb5 30.Qb1 N8d7 (30...Qa6 31.Qb2 Be8 32.Be2+-) 31.Nd7 (better 31.Qb4!? g4 32.Qe7 Ne5 33.de5 Ng8 34.Qg5 Kf8 35.Rc8 Be8 36.hg4 hg4 37.Bg4 Qb4+-) 31...Nd7 32.Bh5 Qa6 (32...Bc6 33.Qb6 Nb6 34.Be2+-) 33.Bf3 (33.Qb4!? Be2 34.f3 Qd3+-) 33...Bd3 34.Qb4 Nf6 35.Qe7 Bc4 36.Rb1 b5 37.Qb4 (better 37.Bh5! Nh5 38.Qg5 Kf8 39.Qh6 Ng7 40.Qh8 Ke7 41.Qg7 Qa2+-) 37...Qa2 38.Qb2 Qa4 39.Ra1 Qb3 40.Qc1 Qd3 41.Qd1 Qc3 42.Rc1 Qb2 43.Rc2 Qb3 44.Qc1 b4 45.e4 Ne4?? (better 45...Nh7+-) 46.Be4 de4 (46...f6 47.Bf3 Qa3 48.Bg4+-) 47.Qg5 (better 47.Rc4 e3+-) 47...Kf8 (47...Kh7 48.Rc1 e3 49.Qe3 Qe3 50.fe3 Bd5+-) 48.Rd2 (better 48.Qc5 Kg7 49.Rc4+-) 48...Bd3 (better 48...Qc3!? 49.Rd1 Bb3 50.Qd8 Kg7+/-) 49.Qc5 Kg7 50.Qe5 (50.h4 Qa4+-) 50...Kf8 (50...f6 51.Qg3 Kf7 52.Qd6+/-) 51.f3 Qc3?? (better 51...ef3 52.gf3 Qa3+-) 52.Rd1 (52.Ra2 Qc1 53.Kh2+-) 52...Bc2= 53.Rf1 Qe3?? (better 53...Bd3 54.Rd1 Bc2=) 54.Kh1 (better 54.Kh2 Ba4 55.fe4 Qc3+-) 54...Bd3 (54...Qe2 55.Ra1 Ba4 (55...ef3?? 56.Ra8 Ke7 57.Ra7 Ke8 58.Qb8) 56.fe4 Kg8+-) 55.Ra1 b3 (55...Qh6 56.fe4 Be4 57.Qe4 Qg5+-) 56.Ra8 Ke7 57.Qc7 (57.Ra7 Ke8 58.Qb8) 57...Kf6+- 58.Qd8 (58.Rf8 Qe1 59.Kh2 Qg3 60.Kg3 ef3 61.Qf7 Kg5 62.Rh8 Bh7 63.Rh7 fg2 64.h4) 58...Kf5+/- 59.Qh4?? (59.Ra5 Kg6 60.Qg8 Kf6 61.Qh8 Kg6 62.Qh5 Kg7 63.Qg4 Kf6 64.Qh4 Kg7 65.f4 Qc1 66.Kh2 Qc4 67.Ra8 Qd5 68.Qh8 Kg6 69.Rg8 Kf5 70.Qh7 Kf4 71.Qh6 Qg5 72.Qg5) 59...Qc1-+ (59...Qd4 60.Qg4 Kf6 61.Qf4 Ke7 62.Qg5 Kd6 63.Qd8 Kc6 64.Rc8 Kb7 65.Qc7 Ka6 66.Qc6 Ka5 67.Ra8 Qa7 68.Qc5 Ka4 69.Ra7 Ba6 70.Ra6; 59...ef3?! 60.Qg4 Kf6 61.Qh4 (61.Qf3?? Qf3 62.gf3 b2-+) 61...Qg5 62.Qh8 Qg7 63.Qh4 (63.gf3?? Qh8 64.Rh8 b2-+) 63...Qg5 64.Qh8 Qg7 65.Qh4 (65.gf3 Qh8 66.Rh8 b2-+) 65...Qg5=) 60.Kh2 Qf4 61.Qf4 Kf4 62.Rb8? (62.d5 ed5 63.Rb8-+) 62...Ke3?? (62...e3 63.Kg1 Kg3 64.Rg8 Bg6-+) 63.fe4 Ke4 (63...Ke4 64.Rb3 Kd4+-). pacalmisu (2355) - genodesis (2510), Rated blitz game, lichess.org, 2016.

4.a3 a5 5.Bd4 Qc7 6.e4 d5 7.ed5 cd5 8.Nc3 ab4 (8...Nc6 9.Bb5=) 9.Nb5+= Qf4?? (better is 9...Qd7+=) 10.Be3+- Qf6 (10...Qf5 11.Nc7 Kd8 12.Na8 ba3 13.Bd3+-) 11.Nc7 Kd8 12.Na8 ba3 (12...Ne7+-) 13.Bg5 a2 (13...Bc5 14.Ne5 Ke7 15.Bf6 Nf6 16.Qb1+-) 14.Bf6 Nf6 15.Ne5 Nbd7 16.Nf7 Ke8 17.Nh8 Nc5 18.Bb5 Kd8 19.Nf7 (19.Ra2 Nce4+-) 19...Ke7 20.Ne5 Nce4 21.Nb6 Kd8 22.0-0 Bc5 23.Nc8 Kc8 24.Ra2 Bf2 25.Rf2 Nf2 26.Kf2 Ne4 27.Ke1 (27.Ke1 Kb8 28.Qf3 Nd6 29.Qf8 Kc7 30.Qe7 Kb6 31.Qd6 Kb5 32.Rb2 Ka4 33.Qb4) 1–0. DEFFM – GuestKCDG, freechess.org, 2018.

4.a3 d5 5.e3 a6 6.c4 dc4 7.Bc4+- c5 8.bc5 Bc5 9.0-0 h5 10.Qb3 Qe7 11.d4 Bd6 12.Nh4 Rh6 13.d5 g6?? 14.Nd2 ed5?? 15.Bd5 Nc6 16.Bc6 bc6 17.Qg8 Kd7 18.Ng6 Rg6 19.Qg6 (19.Qg6 Qe8 20.Qf6+-) 1–0. thorr (2220) – nwishn (2090), net–chess.com, 2007.

4.a3 e5 5.e3 d5 6.c4 Be6 7.cd5 Bd5 8.Nc3 Be6 9.d4 Bd6? (better is 9...Nd7!?+=) 10.de5+- fe5 11.Be2 (better is 11.Ne4 Be7 12.Qd8 Kd8 13.Rd1 Ke8 14.Nd6 Bd6 15.Rd6+-) 11...Nf6+= 12.0-0 0-0 13.Qc2 g6 14.Rad1 Qc7 15.h3 e4? (better is 15...a5+=) 16.Ne4+- Ne4 (16...Be7+-) 17.Qe4 Bf5 (17...Bd5 18.Rd5 cd5 19.Qd5 Rf7+-) 18.Bc4 Rf7 19.Qe8 Bf8 20.Bf7 (20.Ng5 Be6 21.Be6 Qh2 22.Kh2 a5 23.Qf7) 20...Qf7 21.Rd8 (better is 21.Qe5 Qg7 22.Rd8 Qe5 23.Be5+-) 21...Bd7 (21...Qe8 22.Re8 Kf7+-) 22.Qf7 (22.Qe5 Qf6 23.Qf6 Be8 24.Re8 a5 25.Qf8) 22...Kf7+- 23.Ne5 (better is 23.Rd1 a5 24.Ne5 Ke7 25.R1d7 Nd7 26.Ra8 Ne5 27.Be5 ab4 28.ab4 Kf7+-) 23...Ke6 (23...Ke7 24.Nd7 Kd8 25.Nf8 a5+-) 24.Rf8 h6 (24...c5 25.Nd7 Kd7 26.Rd1 Kc6 27.Rc8 Kb5 28.bc5 h6+-) 25.Rd1 g5 26.Nd7 (26.Ng6 c5 27.Rf6) 26...Nd7+- 27.Ra8 Ne5 28.Be5 Ke5 29.Ra7 (29.Re8 Kf6 30.Rd6 Kf7 31.Rb8 h5 32.Rb7 Ke8 33.Rh6 c5 34.Rh8) 29...Ke4 30.g4 b5 31.Kg2 (31.Rd4 Ke5 32.Re7 Kf6 33.Rde4 c5 34.R4e6) 31...c5 (31...Ke5 32.Kg3 Kf6 33.f4 gf4 34.ef4 Ke6 35.Rad7 c5 36.R1d6) 32.Re7 1–0. Fournier,Frederic (1845) – Iger, Active, 2008.

4.c3 d5 5.a4 a6 (5...e5 6.e3=+) 6.e3 b6 7.b5 (7.Be2 Bd6=) 7...c5 (7...e5 8.bc6 Nc6 9.c4=+) 8.ba6 Ba6 9.Bb5 Bb5 10.ab5 Ra1 11.Ba1 Bd6 12.0-0 Ne7 13.d4 c4 14.Bb2 0-0 15.Ba3 Ba3 16.Na3 g5 (16...Qd6 17.Qa4=) 17.Nd2 Nd7 (17...Qd6 18.Qa4+=) 18.e4 (18.Qg4 Nf5+-) 18...h6 19.ed5 ed5 20.Qh5 Kg7 21.h4 (21.Re1 f5+=) 21...Ng6 22.hg5 (22.Nc2!?+=) 22...fg5= 23.Kh2?? (better 23.Qd1=) 23...Nf6-+ 24.Qe2 (24.Qh3 Qd6 25.f4 Qa3 26.fg5 hg5-+) 24...Re8 (24...Qd6 25.f4 Qa3 26.fg5 hg5 27.Nb1 Qd6 28.Kg1-+) 25.Qf3 g4 (25...Qd6 26.Qg3 Qa3 27.Qc7 Re7 28.Qg3-+) 26.Qf5?? (26.Qg3 Nh5 27.Qg4 Qd6 28.f4 Nhf4 (worse 28...Qa3 29.Qh5 Qd6 30.Kg1+-) 29.Nac4 dc4 30.Nc4 Qe6 31.Qe6 Re6-/+) 26...h5 (better 26...Qd6 27.g3 Qa3-+) 27.g3 (27.Kg1 Re2 28.Nab1 Qe8-/+) 27...Qc8 (27...h4 28.Kg1-/+) 28.Qc8=+ Rc8 29.Re1 (29.Ra1 Re8 30.Nab1 Ne4=+) 29...Re8 (29...Ra8 30.Nab1-/+) 30.Re8=+ Ne8 31.f3 gf3 32.Nf3 Nd6 33.Ne5? (better 33.Kg2!?=+) 33...Ne5-+ 34.de5 Ne4 35.Nb1 (better 35.Nc2-+) 35...Kf7 36.Kh3 Ke6 37.g4 hg4 38.Kg4 Ke5 39.Kf3 Ng5 (39...d4 40.Na3 Nd6 41.cd4 Kd4 42.Ke2-+) 40.Ke3 (40.Ke2-+) 40...Ne4 (40...Ne6 41.Na3-+) 41.Ke2?? (41.Kf3 d4 42.Na3 dc3 43.Ke2-+) 41...Nc5 (better 41...Kd6!? 42.Kf3 Kc5 43.Kf4 Kb5 44.Ke5-+) 42.Ke3 Nb3 (42...Na4 43.Kf3-+) 43.Na3 Nc5?? (better 43...Kd6-+) 44.Nc2?? (44.Nb1 Na4 45.Ke2-+) 44...Ne4-+ 45.Nb4 Nc3 46.Nc6 Kd6 47.Kd4 (47.Nd4-+) 47…Nb5 (47...Nb5 48.Ke3 Kc6-+) 0–1. aravind555 – VictorRUS, lichess.org, 2019.

4.a3 Nd5 5.c4 Nf6 6.e3 Be7 7.d4 0-0 8.Bd3 d5 9.Ne5 a5 10.0-0 (10.c5 b6=) 10...dc4=+ 11.Bc4 ab4 12.ab4 Ra1 13.Ba1 Nd5 (13...Bb4 14.Bd3=+) 14.Qd2 (14.b5!?=) 14...Bb4=+ 15.Nc3 Nd7 16.Nd7 Qd7 17.e4 Nc3 18.Bc3 Bc3 19.Qc3 b5 (19...Rd8 20.Rd1-/+) 20.Bb3 Bb7 21.Rd1 Rd8 22.f4 Re8 23.Rd3 (23.Qc5 Qd8=+) 23...Qe7 24.d5? (better 24.Qc5=+) 24…ed5 1-0. Nighthawk0085 – TheWelshKnight, ChessWorld.net, 2023.

4.a3 Bd6 5.Nc3 0-0 6.e4 c5? (better is 6...Bc7+=) 7.e5+- Be5 8.Ne5 Nc6 9.Nc6 dc6 10.Bd3 cb4 11.ab4 g6 12.0-0 Nd5 13.Nd5 ed5 14.Re1 h5 15.Qe2 Bg4 (15...Qg5 16.Bd4 Be6 17.Ra7 Ra7 18.Ba7+-) 16.Qe3 f5 (16...Kh7+-) 17.Qh6 Qd6 (17...Rf6 18.Ra7! Rb8 19.Rb7 Rb7 20.Bf6 Qf8 21.Qg6 Rg7 22.Bg7 Qf7 23.Qh6 Qe7 24.Re7 d4 25.Bc4) 18.Qg7 1–0. pcmvr (2845) – dweigel, net–chess.com, 2011.

4.a3 Bd6 5.c4 b6 6.e4 Ne4 7.Bg7 Rg8 8.Bb2 Bb7 9.d3 Ng5 (9...Nf6 10.Nc3=) 10.Nbd2 (10.Nfd2 h6+=) 10...c5= 11.Be2 (11.Ng5 Qg5 12.Ne4 Be4 13.de4 Be5=) 11...h6 (11...cb4 12.h4 Nf3 13.Bf3=+) 12.0-0 (12.h4 Nh7 13.bc5 Bc5+=) 12...Qc7 (12...cb4 13.ab4 Bb4 14.Kh1=+) 13.Ne4? (better 13.bc5!? Bh2 14.Kh1=) 13...Ne4-/+ 14.de4 Be4 (14...cb4?! 15.e5 Bf8 16.ab4 Bb4 17.Qc2=+) 15.Qd2 (better 15.Bd3 Bh2! 16.Kh1-/+) 15...Bf3?? (better 15...Bh2 16.Kh1 Qf4-+) 16.Bf3= Bh2 17.Kh1 Nc6 18.b5 Nd4?? (better 18...Bf4!? 19.Qe2 0-0-0 20.bc6 dc6+-) 19.Bd4 (19.Ba8 Nb3 20.Qh6 Be5 21.Be5 Qe5+-) 19...cd4 (better 19...0-0-0 20.Bc3 Be5+-) 20.Ba8 Qe5 (20...Bf4 21.Qd4 Be5+-) 21.f4 (better 21.g3 Bg3 22.fg3 Qg3 23.Bg2+- (23.Qh6?! Rg4+-)) 21...Qh5+- Threatening mate... how? 22.Rf3?? (22.Qd1 Qh4 23.Rf3 Bg3 24.Kg1+-) 22...Bg3?? (better 22...Bf4 23.Rh3 Qh3 (23...Bd2 24.Rh5 Be3 25.Bf3+-) 24.gh3 Bd2-+) 23.Kg1-/+ Qh2 24.Kf1 Qh1 25.Ke2 Qg2?? (better 25...Qa1 26.f5 Be5-+) 26.Kd1?? (better 26.Kd3 Qd2 27.Kd2+-) 26...Qg1-+ 27.Ke2 Qa1 28.Qd3 (28.Rf1 Qa3 29.Qd4 Qa2 30.Kd3 Rg4-+) 28...Qb2 (28...Qe1) 29.Qd2-+ Qd2 30.Kd2 h5 31.Kd3 h4 (31...Rg4 32.Rf1-+) 32.Kd4 Ke7 33.Be4 f5 34.Bd3 (34.Bb7 h3-+) 34...Rd8 (34...h3 35.Be4 fe4-+) 35.Bf1 d5 36.c5 (36.cd5 Kf6 37.Kc4 Rd5 38.Bd3-+) 36...bc5 37.Kc5 Rc8 38.Kb4 Be1 39.Kb3 Rc5 (39...Rg8 40.a4-+) 40.a4 d4 41.a5 (41.Rd3 Bf2-+) 41...Kd6 (41...Ba5 42.Ka4 Be1 43.Bd3-+) 42.b6 (42.Rh3 e5 43.fe5 Ke5-+) 42...ab6 43.ab6 Rc3 (better 43...Rc6 44.b7 Rb6 45.Kc4 Rb4 46.Kd3 Kc5-+ (worse 46...Rb7 47.Kd4 Bd2 48.Kd3 Rb3 49.Ke2 Rf3 50.Kf3-+)) 44.Rc3 dc3 45.Bg2 Kd7 46.Kc2 Kc8 47.b7 Kb8 48.Bf3 (48.Kd3-+) 48...h3 49.Kd1 Bd2 50.Kc2 h2 51.Kd1 (51.Bh1-+) 51...Bf4 52.Kc2 Be5 53.Kd3 Bf6 (better 53...Bd4-+) 54.Kc2 (54.Bg2 Bd4!-+) 54...Bd4 (better 54...e5 55.Bh1 e4 56.Kd1-+) 55.Kd3 (55.Kd1 e5 56.Bh1 e4-+) 55...e5 56.Kc2 e4 57.Bh1 Kb7 58.Kd1 Kb6 59.Kc2 Kb5 60.Bg2 Kc4 61.Kd1 Kb4 (61...Kb3 62.Bh1 c2 63.Kd2 Bc3 64.Ke3 c1Q 65.Kf2 Qg1 66.Ke2 Qe1) 62.Kc2-+ e3 63.Bf3 f4 (63...e2 64.Bd5 e1Q 65.Bb7 Qd2 66.Kb1 Qb2) 64.Be4 Kc4 (64...e2 65.Kd3 e1Q 66.Kd4 Qe3 67.Kd5 c2 68.Bh1 c1Q 69.Be4 Qcc5 70.Ke6 Qe4 71.Kf7 Qce7 72.Kg8 Qa8) 65.Bd3 (65.Bd3 Kc5 66.Be2 h1Q 67.Bf3 Qh7 68.Be4 Qe4 69.Kb3 Qb1 70.Ka3 Qb4 71.Ka2 Qb2). aravind555 (1630) – iosy (1685), lichess.org, 2018.

4.a3 Bd6 5.e4+= Ne4 6.Bg7 Rg8 7.Bb2 Qb6 (7...Bc7!?=) 8.Qe2+/– Nf2? (better is 8...f5+/–) 9.Qf2+- c5 (9...Qf2 10.Kf2 Bc7 11.Bd3+-) 10.Nc3 Nc6 (10...Be7 11.Na4 Qc7 12.bc5+-) 11.Nb5 Ke7 (11...Bb8 12.bc5 Qd8+-) 12.Qh4 Ke8 13.Nd6 Kf8 14.Qf6 Nd8 If Black now would get Rg6 in, he might survive 15.Ng5 Qd6 (15...Rh8 16.Ngf7 Qd6 17.Nd6 Kg8 18.Qh8) 16.Qd8 1–0. Woelfelschneider,Peter – Lorenz, 2009.

4.a3 Be7 5.e3 0-0 6.Be2 Nd5 7.0-0 Bf6 8.Bf6 Qf6 9.Ra2 b5 10.c4 bc4 11.Bc4 a5 12.Bb5?? (better is 12.Bd5 ed5 13.b5=) 12...cb5-+. Fournier,Frederic (1940) – DEVER (1760), Active, 2004.

4.a3 Be7 5.e3 d5 6.c4 Nbd7 7.d4 0-0 8.cd5 ed5 9.Bd3 Re8 10.Nbd2 Nf8 11.h3 Bd6 12.0-0 Bd7 13.Rc1 Ne4 14.Nb3 f5 15.Nc5 b6 (15...Qb6 16.Qc2=) 16.Nd7 Qd7 17.Nd2 Qe6 18.Ne4 fe4 (18...de4?? 19.Bc4 a5 20.Be6 Re6 21.d5 cd5 22.Qd5+-) 19.Be2 Qh6 20.Kh1 (worse is 20.Rc6 Bh2 21.Kh2 Qc6+=) 20...Rac8 21.b5 cb5 22.Bb5 Rc1 23.Qc1 Re6 24.Be2 Rg6 25.f4 Rg3 26.Kh2 Rg6 (26...Qg6 27.Bg4 Rg4 28.hg4 Qg4 29.Qc6+=) 27.Qd1 (27.g3!? Bb8 28.Qc8=) 27...Qg5 28.g4 h5 29.Rg1 h4 (29...hg4 30.Qb3 Kh8 31.Bg4= (31.hg4? Qh4 32.Kg2 Rg4 33.Bg4 Qg4 34.Kf1 Qf3 35.Ke1 Bf4-+)) 30.Kh1 Qe7 31.Qb3 Qf7 32.g5 Bf4? (better is 32...Be7+=) 33.ef4+- Qf4? 34.Qd5 Kh7 35.Bc1 Qf2 36.Qe4 Kg8 37.Qe3 Qf7 38.Rg4 Qd5 39.Bf3 Qc4 40.Rh4 1–0. Krc,Milan (1880) – Sladek,Vladislav (2000), Brno Trade op–A, 2005.

4.a3 h6 5.Nc3 (5.e4 Ne4 6.Bd3=) 5...Bd6 (5...a5!?=) 6.g3 (6.e4 Qc7+/–) 6...0-0 (6...a5 7.b5+=) 7.Bg2 (7.e4 Be7+/–) 7...b6 (7...a5 8.b5+=) 8.d4 (8.e4 Be7+/–) 8...Bb7 (8...Be7 9.0-0+=) 9.0-0 (better is 9.e4 Be7 10.0-0+=) 9...Ng4 (9...a5 10.b5+=) 10.Ne4 (10.e4!? Be7 11.e5+-) 10...Be7 (10...Bc7 11.h3 f5 12.Ned2+=) 11.c4 (11.Ne5 Nf6 12.Nf6 Bf6 13.c4+/–) 11...c5? (11...d5 12.Nc3+=) 12.d5 (12.Ne5!? Ne5 13.de5+/–) 12...ed5 (12...Na6 13.Ne5 Ne5 14.Be5 ed5 15.Nd6 Bd6 16.Bd6+=) 13.cd5 d6 (13...Na6+=) 14.Bc3 (better is 14.bc5!? bc5 15.Rb1+/–) 14...Nd7= 15.Qd2? (15.bc5 bc5 16.Qd3 Nb6=) 15...Ndf6 (better is 15...f5 16.bc5 fe4-+) 16.Nf6= Bf6 17.Bf6 (17.Rfc1 Re8=) 17...Qf6 (17...Nf6 18.Nh4=) 18.Rab1 (18.Rfc1 Rab8=) 18...Rae8 (18...Rac8!?=) 19.h3 Ne5 20.Ne5 Re5 21.e4 Rfe8 22.f3 Ba6 23.b5 Bb7 24.a4 Bc8 25.Kh2 Qg5?? 26.f4+- Qh5 27.fe5 Re5 28.Qf4 Rg5 29.Qd6 Kh7 30.Rf4 f6 31.Rbf1 Qe2 32.R1f2 Qc4 33.e5 Qb3 34.R2f3 Qb2 35.e6 Re5 36.Rf2 Qb3 37.Qc7 Be6 38.de6 Qe6 39.Rf6 Qc4 40.Qe5 Qd3 41.Be4 (41.Be4 Qe4 42.Qe4 g6 43.Qg6 Kh8 44.Rf8#) 1–0. ANZARBOND (1665) – helmisflorin, internet, 2009.

4.Nc3 Bb4-/+ 5.a3 Be7 6.e3 0-0 7.Be2 d5 8.0-0 Bd6 9.Re1 Qb6 10.Rb1 e5 11.Ba1 (11.h3 Qc7-/+) 11...Qa5 (11...Qc7 12.d3-+) 12.d3 Be6 (12...Qa3!? 13.Qd2-+) 13.Rb7-/+ Qa3 14.d4 e4 15.Ng5 (15.Ne5!? Bc8 16.Rb3-/+) 15...Bc8-+ 16.Rb3 Qa5 17.Bb2 h6 18.Nh3 Bh3 19.gh3 Qc7 20.Bf1 Bh2 21.Kh1 Nbd7 22.Ne2 a5 23.Ba3 Rfb8 24.Be7 Bd6 25.Bd6 Qd6 26.Nf4 a4 27.Rb8 Qb8 28.c4 a3 29.cd5 cd5 30.Qa1 Qb2 31.Rb1 (31.Kg2 Kf8-+) 31...Qf2 32.Qc3 a2 33.Ra1 Rb8 34.Qc1 Rb2 35.Bg2 Nh5 36.Qg1 Qg1 37.Kg1 Rb1 (37...Rb1 38.Rb1 ab1Q 39.Bf1 Nf4 40.ef4 e3 41.Kg2 Qb2 42.Be2 Qe2 43.Kg1 Qf2 44.Kh1 e2 45.f5 e1Q) 0–1. Staats,Carsten (2315) – Steingraeber,Barbara (2240), RSX9E – A00 – Sokolsky–1, 2002.

4.Nc3 Bb4 5.a3 Be7 6.e4 d6 7.d4 Bd7 8.Bd3 Qc7 9.0-0 e5 10.de5 de5 11.Ne2 Bd6 12.Ng3 Bg4 13.h3 Bh5 14.Nh5 Nh5 15.Ng5 Nf4 16.Bc4 Ne6 17.Qg4 Ng5 18.Qg5 0-0 19.f4 ef4 20.e5 Be5 21.Rf4 Bf4 0–1. Hgvanmoork – ruslan2351, lichess.org, 2018.

5.ba5 Ra5 6.e3 Ra8 7.Be2 b5 8.0-0 Be7 9.a4 0-0 (better 9...Ra4!? 10.Ra4 ba4=) 10.ab5+/- Ra1 11.Ba1 Qa5 12.Bf6 Bf6 13.bc6 Nc6 14.d3 d5 15.Nbd2 Qc3 16.Nb3 Nb4 Attacking the backward pawn on c2 17.Ne1 Bd7 18.h3 Ba4 19.Qb1 Rc8 20.Nd4 (better 20.d4!?=+) 20...Bd4-/+ 21.ed4 Bc2 22.Qc1 Bd3 23.Qc3 Rc3 24.Nd3 Nd3 (worse 24...Rd3 25.Bd3 Nd3 26.Rb1+/-) 25.Ra1 g6 26.Bd3 Rd3 27.Ra4 Kg7 28.g3 h5 29.Kf1 Kf6 30.Ke2 Rb3 31.Ra6 (31.h4 Kf5-+) 31...Kf5 (better 31...h4!? 32.gh4 Rh3 33.f3-+) 32.Ra7-/+ f6 33.Ra6 e5 34.de5 fe5 35.Ra5 d4 36.Ra7 Ke4 Black plans d3 37.Rg7 Rb2 38.Ke1 Kd3 39.Kf1 Kd2 (better 39...Rb1!? 40.Kg2 Ke2 41.Re7-+) 40.Rg6 d3 41.g4? (better 41.Re6 Kc1 42.Rc6 Rc2 43.Ra6-+) 41...hg4 42.hg4 Rb1 43.Kg2 Re1 (better 43...Ke2 44.f4 e4 45.Rd6-+) 44.Rd6 (better 44.g5 Ke2 45.Re6-+) 44...Ke2 45.Rd5?! (45.Re6 Kd1 46.g5-+) 45...e4 46.g5 d2 47.g6 d1Q 48.g7 (48.Rd1 Rd1 49.g7-+) 48...Qd5 49.f3 (49.Kg3 Qg5 50.Kh2 Kf2 51.g8Q Qh4) 49…Qg5 (49...Qg5 50.Kh2 Qh4 51.Kg2 ef3) 0-1. daur89 (2385) - Monroilovjr (2305), Rated Bullet game, lichess.org, 2019.

5.ba5 d5=.

5.c3 d5 6.e3 Bd6 7.d4 0-0 8.Be2 Nbd7 9.0-0 Ne4 10.c4 dc4 11.Qc2 Nef6 12.ba5 Qa5 13.Bc4 Qh5 14.e4 Bf4 15.Rd1 Ng4 Can h2 get defended? 16.h3 Ngf6 17.Nc3 Qg6 (better is 17...Rd8!?=) 18.Bd3+/– e5 19.Ne2 Qh5 20.Nf4 (better is 20.Ne5!? Be5 21.de5+-) 20...ef4+/– 21.Bc1 g5 (21...Qh6 22.a4+/–) 22.d5 (22.Bb2 Re8+-) 22...g4 (better is 22...cd5!? 23.ed5 Nb6+/–) 23.hg4+- Qg4? (better is 23...Ng4 24.dc6 Nde5 25.Bf4 Nf3 26.gf3 Ne5 27.Be5 Qe5 28.cb7 Bb7+-) 24.dc6 bc6 25.e5 (25.Qc6?! Ra7 26.Bb2 Bb7+-) 25...Nd5 26.Bh7 Kh8 27.Bf5 Qg7 (27...Qh5 28.Qc6 Qf5 29.Qa8+- (worse is 29.Rd5 Ra6 30.Qb5 Rh6+-; worse is 29.Qd5 Ra4+-)) 28.Qc6 (28.Qc6 N7b6 29.Rd5 Bf5 30.Rd1+-) 1–0. marekt – forkknight, ChessWorld.net, 2012.

5.c3 d5 6.e3 Bd6 7.d4 Ne4 8.Bd3 f5 9.0-0 0-0 10.Ne5 Be5 11.de5 Nd7 12.c4 ab4 13.ab4 Ra1 14.Ba1 Qc7 15.Qf3 dc4 (15...Ne5? 16.Qf4+-) 16.Bc4 Nb6 (16...Ne5? 17.Qf4+-) 17.Bd3 Ng5 18.Qg3 Nf7 19.Na3 Qe7 20.Nc2 Nd5 21.Rb1 Bd7 22.Bc4 Qg5 23.Bd5 (23.Qg5!? Ng5 24.Rd1+=) 23...cd5 24.f4 Qg3 25.hg3 Rc8 26.Nd4 Nh6 27.Bb2 Ng4 28.Rc1 Ne3 29.Rc8 Bc8 30.Bc1 Nc4 31.Kf2 Kf7 32.Kf3 Bd7 33.g4 fg4 34.Kg4 Ba4 35.Kf3 h5 36.g3 Bd1 37.Kf2 Ba4 38.Kf3 Bd1 39.Kf2 Bg4 40.Nb5 Ke7 41.Nd4 (41.Na3!?+=) 41...Kd7 42.Nb5 Kc6 43.Nd4 Kb6 44.Kg2 Kc7 45.Nb5 Kd7 46.Nd4 (46.Kf2 g5-/+) 46...Ke7 47.Kf2 Bd1 48.Ke1 Ba4 49.Kf2 Be8 50.Kf3 Bg6 51.Kf2 Be4 52.Kg1 g5! 53.Kf2 (53.fg5 Ne5 Deflection) 53...g4 (53...h4 54.f5 hg3 55.Kg3 Bf5 56.Bg5 Kd7 57.Bf6-/+) 54.Nb5 Bc2 55.Nd4 Ba4 56.Kg2 Bd7 57.Kf2 Nb6 58.Bb2 Nc4 59.Bc1 Be8 60.Kg2 ½–½. Matei,Ciprian (1795) – Szakats,Stefan (1865), XI Bancpost A, Miercurea Ciuc ROM, 2008.

5.c3 d5+= 6.g3 Bd6 7.d3 ab4 8.cb4 e5 (better is 8...Nbd7!?+=) 9.Ne5= 0-0 10.Bg2 Re8 11.Nf3 Bg4 12.0-0 Nbd7 13.Qc2 h5 14.Nc3 Ne5 15.Rfe1 Nf3 16.ef3 Bf5 17.Ne2 h4 18.Qd2 Bh7 19.Bh3 (worse is 19.gh4 Nh5=) 19...hg3 20.hg3 c5 21.Nf4 (21.f4 Be7+=) 21...Re1 22.Re1 (worse is 22.Qe1 cb4 23.ab4 Ra1 24.Qa1 Bf4 25.Bf6 gf6 26.gf4 Bd3+=) 22...d4 23.bc5 Bc5 24.Rc1 b6 (24...Ba3? 25.Ba3 g5 26.Ne2+-) 25.Rc4 Qd6 26.a4 Nd7 27.Bd7 Qd7 The isolani on a4 becomes a target 28.Qd1 Rd8 29.Qc1 Qb7 30.Kg2 Bf5 31.a5 Bg4 32.Qd1 g5 33.a6 (33.ab6 Bb6 34.Nh3 Be6+=) 33...Qc6 34.Nh3 f6 35.Ng1 Kf7 (35...Be6 36.Qa4 b5 37.Qa5 bc4 38.Qd8 Kf7 39.Bd4 Bd4 40.Qd4 Qa6 41.dc4 Qc4 42.Qc4 Bc4 43.g4+=) 36.Qc1 Qd5 37.a7 (37.Ba3 Bf3 38.Nf3 g4+=) 37...Bf5= 38.Ba3 (38.Ra4!?=) 38...Bd3+= 39.Ra4 Bb5 (better is 39...Ra8!?+=) 40.Bc5+= Ba4 (worse is 40...bc5 41.Ra5 Bd7 42.Rc5+/–) 41.Bb6 Ra8 42.Qa1 Bc6 43.Qd4 Qd4 44.Bd4 g4 0–1. marekt – TonyF1941, ChessWorld.net, 2012.

5.c3 Be7 6.Qc2 (6.e3 0-0=) 6...d5+= 7.d4 (7.e3 0-0+=) 7...Ne4 (7...0-0 8.e3+=) 8.Nbd2 (8.e3 0-0=) 8...f5 (8...Nd2 9.Nd2 ab4 10.cb4=) 9.Ne4 (9.e3 0-0=) 9...fe4+= 10.Ne5 0-0 (10...Nd7 11.e3+=) 11.e3 (11.f3 Bd6=) 11...Nd7+= 12.Nd7 (12.Be2 Ne5 13.de5 Qc7-/+) 12...Bd7-/+ 13.g3 (13.Qb3 b5-/+) 13...Qc7 (13...b5 14.Bg2-/+) 14.Bg2 Rf6 (14...e5 15.de5 Qe5 16.c4-/+) 15.0-0+= Raf8 16.ba5 (16.c4 ab4 17.ab4 Bb4-/+) 16...Qa5-/+ 17.c4 Qa6 (17...b5 18.c5-/+) 18.cd5 (18.c5!?+=) 18...ed5-/+ 19.Qb3 Kh8 (19...R8f7 20.Bc3-/+) 20.Bc3 Bg4 (20...b6 21.Rab1-/+) 21.Rab1 (better is 21.Bb4!? Bb4 22.ab4-/+) 21...Be2-+ (21...Ba3 22.Ra1+/–) 22.Rfe1 Rf2 23.Rb2 (23.Qb7 Bd6 (23...Ba3? 24.Qa6 Ba6 25.Ra1+-) 24.Qa6 Ba6+=) 23...Bg5 (23...Qd3 24.Bb4 Bb4 25.ab4 Qb3 26.Rb3-+) 24.Bb4 R8f7 25.Bd6 Bc4 (25...Kg8!? 26.Bf4 Bc4 27.Qb4 Rb2 28.Qb2-+) 26.Rf2-/+ Rf2 (26...Bb3?! 27.Rf7 h6 28.Bh3+=) 27.Qb4 (27.Qd1 Rf6 28.Bb4 Rg6-+) 27...Rf7 28.h4 (28.Bf4 Bf4 29.gf4 Bd3-/+) 28...Bd8 29.Rb1 (29.Rc1 Ba5 30.Qb2 Rf6-/+) 29...Ba5 30.Qc5 h6 (30...Qa8 31.Bf4-+) 31.Bf4 b5 (31...Qa8 32.h5-+) 32.Bh3 Bd8 (32...Bd2 33.Be6 Rf6 34.Be5 Be3 35.Kh1=) 33.Be6 (33.Bd7 Be7 (33...Rd7?! 34.Qf8 Kh7 35.Qf5 Kg8 36.Qd7+=) 34.Bd6 Qa4-+) 33...Be7-+ 34.Bd6 Bd6?? (better is 34...Rf6-+) 35.Qd6+- Threatening mate... how? 35...Qb7 (35...Qa7 36.Qd8 Kh7+-) 36.Bf7?? (better is 36.Qd8 Kh7 37.Qe8+- (37.Bf7?! Qf7 38.Qd6 Bd3=)) 36...Qf7= 37.Qf4 (37.Ra1 Kh7=) 37...Qa7 (37...Qh5 38.Ra1=) 38.Qf8 White gets kings attack 38...Kh7 39.Rb2 Qa4 (better is 39...Qa5=) 40.Rf2 Qb3 41.Qf5 Kg8 42.Qc8 Kh7 43.Rf8 Threatening mate: Qf5 (43.Qc6 Qe3 44.Kg2 Be2 45.Qd5 Bf3 46.Rf3 Qf3 47.Kh2 Qe2 48.Kg1 Qd1 49.Kg2 Qc2 50.Kh3 e3=) 43...Qd1?? (43...Qe3 44.Kg2 Qd2 (44...Qd4?? 45.Qf5 g6 46.Rf7 Qg7 47.Qf6 Qf7 48.Qf7 Kh8 49.Qg6+-) 45.Kh3 Bf1 46.Rf1 Qd4+-) 44.Kh2 Qe2 45.Kh3 Qh5 (45...Qf1 46.Rf1 Bf1 47.Kg4 Be2 48.Kf5 Bf1+-) 46.Rh8 Kg6 47.Qe8 Kf6 48.Rf8 Qf7 49.Qf7 1–0. Wagle,Rainer Georg – Beck,Frederik (2100), Baden–chT U16, 2002.

5.Nc3=.

5.c4 ab4 6.ab4 Ra1 7.Ba1 Bb4 8.e3 (8.Qb3 Na6-/+) 8...0-0 (8...d6 9.Bc3 Na6 10.Be2-/+) 9.Be2 (9.Qb3 Na6-/+) 9...b6 (9...d6 10.0-0-/+) 10.0-0 d5 11.Ne5 (11.Qb3 c5=+) 11...Qd6 (11...dc4 12.Bc4 b5 13.Be2-/+) 12.cd5 (12.Qb3 Bb7=+) 12...cd5 (12...Nd5 13.d4-/+) 13.Nd3 Ba5?? (13...Nfd7 14.Nb4 Qb4 15.f4=+) 14.Bf6?? (better is 14.Be5 Qe7 15.Bb8+-) 14...gf6-/+ 15.Bh5 e5 16.f4 Bf5 (better is 16...e4!? 17.Nf2 Re8-/+) 17.fe5+= fe5?? (better is 17...Qe6 18.Nf4 Qe5=) 18.Rf5+- e4 19.Qg4 Kh8 20.Ne5 Rg8 21.Nf7 1–0. abt – baisse, Caissa.com, 2004.

4.a3 d5 5.e3=.

4.a3 Ne7 5.e3 d6 6.Be2 e5 7.0-0 Ng6 8.c4 Be7 9.Nc3 Bg4 10.d4 ed4 (10...0-0 11.h3 Be6 12.d5+=) 11.Qd4+/– Ne5 (better is 11...Bf3!? 12.Bf3 Bf6+/–) 12.Ne5+- Be2 13.Nf7! Bf6 (13...Kf7 14.Ne2) 14.Nd8 Bd4 15.ed4 Bf1 16.Nb7 (16.Rf1?! Kd8 17.Ne4 Kd7=) 16...Bc4 (16...Bd3 17.Nd6 Kd7+-) 17.Nd6 (17...Kd7 18.Nc4+-) 1–0. Wall,Bill – Lolo, internet, 2003.

4.a4 Ne7 5.e3 d5 6.Be2 Nd7 7.0-0 Rg8 (7...Ng6 8.b5=) 8.c4 g5 9.cd5 (9.d3 g4 10.Nfd2 g3 11.hg3 e5+=) 9...Nd5 10.b5 c5 11.d4 b6 (11...Bg7 12.Nc3+=) 12.Na3 Bb7 13.Nc4 N7f6 (13...a6 14.ba6 Ba6 15.Rc1+=) 14.Nfe5 Nf4? (better 14...a6+-) 15.ef4+- gf4 16.g3 fg3 (16...Bd5 17.a5+-) 17.fg3 Qd5 (17...Rc8+-) 18.Bf3 Qf3 (18...Ne4 19.Re1 Qd8 20.Be4 Be4 21.Re4 Rg5+-) 19.Rf3 Bf3 (19...Be7 20.Rf6! Bf6 21.Nd6 Ke7 22.Nb7 Be5 23.de5+-) 20.Qf3 Rd8 21.Qf6 Rd4 22.Qf7 (22.Qf7 Kd8 23.Nc6 Kc8 24.Na7 Kb8 25.Nc6 Ka8 26.Nb6) 1–0. DEFFM – GuestVCHQ, freechess.org, 2020.

4.a4 Nf6 5.b5=.

4.e3 Qb6 5.a3+= a5 (5...d6 6.Be2+=) 6.c3 (6.b5 d6+=) 6...ab4 (6...d5 7.d3=) 7.cb4 Bb4?? (better is 7...Nf6=) 8.Bg7+- (worse is 8.ab4 Ra1 9.Bg7 Ra8 10.Bh8 d6+-) 8...Rh7 9.ab4 Rg7 (9...Ra1 10.Ba1 f6 11.Qa4+-) 10.Ra8 (10.Ra8 Qc7 11.Na3+-) 1–0. Wall,Bill – Funky, internet, 2006.

4.e3 Nf6 5.a3=.

3.a3 a6 (--> 1.b4 a6 2.Bb2 Nc6 3.a3 e6).

3.a3 d6 4.e3 (4.b5 Ne5=) 4...Nf6 (4...e5 5.Bb5=) 5.Nf3 e5 6.c4 (6.b5 Ne7=) 6...Bg4 7.d3 Be7 8.Nbd2 0-0 9.Be2 Nd7 (9...a5 10.b5 Nb8 11.0-0=) 10.Ne4 (10.0-0=) 10...a6 (10...f5 11.Ng3+=) 11.0-0 (better is 11.Ne5!? Be2 12.Nc6 Bd1 13.Nd8+/–) 11...f5= 12.Ned2 Bf6 (12...a5 13.b5 Ncb8 14.d4+=) 13.e4 (13.h3 Bh5=) 13...f4 (13...a5 14.b5 fe4 15.de4=) 14.Qb3 (14.Nd4 Be2 15.Ne2 Qe7=) 14...Be6 (14...Qe7 15.h3 Be6 16.Qc2=) 15.Qc2 g5 (15...Qe7 16.Rfe1=) 16.Ne1 (16.Rfe1 g4 17.b5 Na5-+ (17...gf3?! 18.bc6 fe2 19.cd7+=)) 16...Qe7 (16...g4 17.Rb1=) 17.f3 (17.Nef3 g4 18.Ne1 f3 19.gf3 a5=) 17...Qg7 (17...Nd4 18.Bd4 ed4 19.a4+=) 18.Rf2 (18.Rb1 Qg6=) 18...Nd4 19.Qb1 Ne2 20.Re2 g4 (20...b5 21.Qc2=) 21.Kh1 (21.Qc2 g3+=) 21...Qh6 (21...g3 22.h3+=) 22.Nf1 (22.fg4 Bg4 23.Nef3 a5=) 22...Bh4 (22...g3 23.h3-/+) 23.Qc1 (23.fg4 b5=) 23...Be1 24.Qe1 Nf6 (24...gf3 25.gf3 Rf7 26.Rg2 Kh8 27.Qf2+=) 25.Bc1 (25.fg4 Ng4 26.Bc1 Qf6+=) 25...Nh5 (25...gf3 26.gf3 Rf7 27.Rg2 Rg7 28.Qe2+=) 26.g3 (better is 26.fg4!? Bg4 27.Rf2=) 26...Qf6 27.Bb2 (27.gf4!? Nf4 28.Bf4 Qf4 29.fg4 Qf3 30.Rg2 Qd3 31.Nd2-/+) 27...fg3-+ 28.Ng3 Qf3 29.Kg1?? (29.Rg2 Nf4 30.Qf2 Ng2 31.Qg2 Qd3 32.c5-+) 29...Nf4 30.Rf2 (30.h4 Nd3 31.Qd2 Qg3 32.Rg2-+) 30...Nh3 31.Kf1 Nf2 32.Nf5 Nd3 (32...Nd3 33.Kg1 Ne1 34.Re1 Bf5 35.ef5 Rf5-+; 32...Nh3 33.Qf2 Qf2) 0–1. Casanova,G – De la Rosa,A, Pena San Jose, 1997.

3.a3 Bd6?? 4.Bg7+- Be5 5.Nc3?? (better is 5.Bh8 Bh8 6.c3+-) 5...Bg7-+ 6.Nf3 Bc3 7.dc3 d5 8.e3 e5 (8...Qf6 9.Qd2-+) 9.Bb5 e4-+ 10.Bc6 bc6 11.Nd4 Qg5 12.0-0? Bg4 13.Qd2 Rd8 14.Nc6?? Rd7 15.Qd4 Ne7?? 16.Qh8+- Ng8 17.Qe5 Qe5 18.Ne5 Nf6 19.Nd7 Bd7 20.Rad1 c6 21.f3 ef3 22.h3 c5 23.Rf3 Ne4 24.bc5 Nc3 25.Rdf1 Nb5 26.Rf7 Na3 27.Rh7 Nc2 28.Rff7 Ne3 29.Rd7 a5 30.Ra7 Nc4 31.Ra8 (31.Rh8) 1–0. Dazzer – Doobi, ChessWorld.net, 2005.

3.a3 f6 (--> 2.Bb2 f6 3.a3 Nc6).

3.a3 Qg5 4.e3 Nh6 5.d4 (5.Nf3 Qg6+=) 5...Nf5 (5...d5 6.Nf3 Qg6 7.b5+=) 6.c4 Qf6 (6...d5 7.Nf3 Qg6 8.Qa4+=) 7.c5 Nh6 (7...d5 8.Nf3+=) 8.Nd2 Qf5 (8...d5 9.Ngf3+=) 9.h3 (9.Ngf3 d5+-) 9...g5 (9...d5 10.Ngf3+=) 10.g4 (better 10.d5 Ne5 11.g4+-) 10...Qd5?? (better 10...Qf6+-) 11.f3 (11.e4 Qd4 12.Bd4 Nd4+-) 11...b6 (11...Nd4 12.Bd4 e5+-) 12.Qc2 (better 12.e4 Qd4 13.Bd4 Nd4 14.cb6 ab6+-) 12...e5?? (12...Nd8 13.Bd3 f5 14.e4+-) 13.0-0-0 (better 13.Bc4 Nb4 14.ab4+-) 13...Qa2?? (better 13...ed4 14.ed4 Ne7+- (14...Nd4?? 15.Ne4 Be7 16.Bd4+-)) 14.Bd3 (better 14.Bc4 Qb2 15.Qb2 ed4+-) 14...a5 (14...Qe6 15.d5! (15.Bh7?! bc5 16.dc5 Rb8+-) 15...Qd5 16.Bc4 Nb4 17.ab4+-) 15.b5 (better 15.Bc4 Qb2 16.Qb2 ab4 17.ab4 ed4+-) 15...Ne7 (15...Nb4 16.ab4 ab4 17.cb6 cb6 18.de5 Bc5+-) 16.Bh7 (better 16.Bc4 Qb2 17.Qb2 bc5 18.dc5+-) 16...Nd5+- 17.Qe4 (17.Nf1 Bb7 18.Bd3+- (18.de5?! Bc5 19.Qd3 Rh7=)) 17...Qc4?? (better 17...Kd8+-) 18.Kb1 (better 18.Nc4 Rh7 19.Qh7+-) 18...Qa4 19.Ne2 (better 19.Qe5 Kd8 20.Bc2 Nc3 21.Bc3 Qb5 22.Kc1 Rg8+-) 19...d6 (19...Bg7 20.Qd5 c6 21.bc6 dc6+-) 20.Qd5 Qb5 (20...Ra7 21.Nc3 Qd1 22.Rd1 Rh7 23.cb6+-) 21.Qa8 Qd3 (21...Kd8 22.Be4 bc5+-) 1–0. pat_cash87 – Dentc, lichess.org, 2020.

3.a3 h6 4.c4 Be7 (better is 4...Nf6!?=) 5.Bg7+/– Rh7 6.Bb2 d5 7.cd5 Qd5 8.Nf3 e5 9.e3 Bf5 (9...e4 10.Nc3 Qe6 11.Nb5+/–) 10.Nc3 Bg4?? (10...Qe6 11.Bb5+-) 11.Be2 (better is 11.Nd5 Bd6 12.Qc2+-) 11...Qe6 12.Qc2 (better is 12.d4 Bf3 13.Bf3 (13.gf3?! ed4 14.ed4 Qg6+/–) 13...ed4 14.Nb5+-) 12...Bf3?? (better is 12...Bf5!? 13.e4 Bg6+-) 13.Bf3 (better is 13.Qh7 Be2 14.Qg8 Bf8 15.Ne2+-) 13...Nf6 14.0-0-0 (better is 14.b5 Na5 15.Ne4+-) 14...0-0-0+/– 15.Bc6 (15.d4!? ed4 16.Ne2 d3 17.Rd3 Rd3+-) 15...Qc6 16.d4 Rg7? (better is 16...ed4 17.Qf5 Kb8 18.Rd4 Rd4 (18...Qg2?? 19.Rd8 Bd8 20.Rd1+-) 19.ed4 Qg2=) 17.de5+- Ng4 18.Rd8 Bd8 19.f3?? (better is 19.Qf5 Qe6 20.Qe6 fe6 21.Nd1+-) 19...Ne3= 20.Qd3 (20.Qd3 Ng2 21.Kb1+=) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

3.a3 Nh6 4.h3 e5 5.g3 (5.b5 Na5+=) 5...Qf6 (better is 5...f6+=) 6.f4 (better is 6.Nc3=) 6...ef4?? (6...Qg6 7.g4 Be7-/+) 7.Bf6+- gf6 8.e3 (8.gf4 d5+-) 8...d6 (8...fg3 9.Nc3 f5 10.Qf3+-) 9.Bb5 (9.ef4 Bd7+-) 9...a6 (9...fe3 10.Bc6 bc6 11.Qe2+-) 10.Bc4 (better is 10.Bc6!? bc6 11.Qf3 Bd7 12.Qe4 Be7 13.Qf4 Nf5+-) 10...Be6 11.d3 Bc4 12.dc4 fg3 13.Qh5 g2 14.Rh2 Rg8 15.b5 Ne5 16.Nd2 Rc8 17.Ne4 Rg6 18.ba6 ba6 19.Qh4 Nf3 20.Nf3 Rd8 21.Neg5! f5 22.Nh7 f4 23.c5+-. cgarcia – smeserkhani, net–chess.com, 2001.

3.b5 Ne5?? 4.Be5+- d6 5.Bb2 Nh6 6.e3 Qf6 (6...Qe7+-) 7.Bf6 (7.Bf6 gf6 8.d4+-) 1–0. Fournier,Frederic (1740) – evangelis (1650), Active, 2006.

3.Nf3 f6 4.e3 Bb4 5.Nh4 f5 6.Bg7 Qh4 7.Bh8 Ne5 8.Be5 Nf6 9.h3 Ne4 10.Qf3 Nd2 11.Nd2 Ba5 12.g3 Qh6 13.0-0-0 d6 14.Bf4 Qf6 15.Qh5 Kd7 16.Qh7 Kc6 17.Nb3 Bb4 18.Rd4 Ba3 19.Kd1 b6 20.Rc4 Kd5 21.Qc7 e5 22.Qc6 Ke6 23.Qa8 Bd7 24.Qg8 Qf7 25.Qf7 Kf7 26.Rc7 Ke7 27.Bg5 Ke6 28.Bc4 d5 29.Bd5 Kd6 30.Ra7 Bb2 31.c4 e4 32.Bf4 Ke7 33.Bc6 Kf6 34.Rd7 Ke6 35.Nd4 Kf6 36.g4 Bd4 37.g5 Kg6 38.Rd6 Kf7 39.ed4 e3 40.Rf6 Kg7 41.fe3 b5 42.h4 bc4 43.Bd6 c3 Black resigned 1–0. Crusader Rabbit (1740) – rol72, ChessWorld.net, 2015.

3.g3 Nb4-/+ 4.c3 Nd5 5.Qc2 b6 6.Bg2 f5 7.Ba3 (better is 7.Bd5 ed5 8.Qf5+=) 7...g6?? (better is 7...Ba3 8.Bd5 ed5 9.Na3 Ne7-/+) 8.c4+/– Ndf6?? (better is 8...Bg7 9.Bb2 Ngf6 10.cd5 Bb7+/–) 9.Ba8 Ne4 (9...Bg7 10.Bg2+-) 10.Bb2 (10.Bf8!? Kf8 11.Be4 fe4 12.Qe4 Kg7+-) 10...Nef6 11.Bd4 Qe7 12.Qc3 c6 13.Nh3 Ba6 14.Qa3 Bc4?? 15.Qa7+- Bh6 16.Qb6 Bg7 17.Qb8 Kf7 18.Na3! Be2 19.Ke2 Bh6 20.Rhb1 Qa3 21.Bb6 Ng4 22.Rb3 Qa4 23.a3 Qe4?? 24.Be3+- Qc4? 25.d3 Qb3?? 26.Qb3 Bg7 27.Ra2 N8f6 28.Rb2 Ra8 29.Qc4 d5 30.Qc6 Ne5 31.Qa8 Nfg4 32.Rb7 (32.Rb7 Nd7 33.Rd7 Kf6 34.Bd4 e5 35.Qc6) 1–0. Robert35 – Conny@, mySchach.de, 2003.

4.b5 Na7 5.e3 Nb5?? 6.Bb5+- c6 7.Be2 b5 8.Nf3 Nf6 9.d4 Bd6 10.Nbd2 0-0 11.0-0 h6 12.c4 b4 13.ab4 Bb4 14.Nb3 White prepares c5 14...Ba6 15.Qc2 White plans c5 15...Qb6 16.c5 Qb7 17.Na5 Nd5 (17...Ba5 18.Ra5 Bd3 19.Bd3 Ra5+-) 18.Nb7 Bb7 19.Ra8 Ra8 20.Ra1 Rb8 (20...Ra1 21.Ba1 g5 22.Qb3+-) 21.Ba3 (better is 21.Bc4!? d6 22.Qb3 Bc8+-) 21...Ba5 22.Rb1 Nc3 (22...Bc7 23.Rb3 Bc8 24.Rb8 Bb8 25.Qa4+-) 23.Rb2 (better is 23.Rb3 d6+-) 23...Kf8 24.Bb4 (better is 24.Ba6! Ra8 25.Bb7 Ra7+-) 24...Bb4 (24...Ne2 25.Qe2 Bc7 26.Qc2+-) 25.Rb4 Nb5 26.Bb5 cb5 27.Rb5 Ke7 28.Qb2 Kd8 29.Rb7 Rb7 30.Qb7 Ke7 31.c6 (31.Ne5 Kf8 32.Qc8 Ke7 33.Qd7 Kf6 34.Qf7 Kg5 35.Qg7 Kf5 36.Qg6) 31...Kf6 (31...e5 32.Qd7 Kf6 33.Ne5 g6 34.Qf7 Kg5 35.Qg6 Kh4 36.Qh6) 32.cd7 (32.cd7 g6 33.d8Q Kg7 34.Ne5 h5 35.Qf7 Kh6 36.Qg6) 1–0. Fournier,Frederic (1900) – urkore, Active, 2007.

4.b5 Na7 5.e3 b6 6.Nf3 d6 7.Be2 Bd7 8.0-0 (8.c4!?+=) 8...Bb5= 9.Bb5 Nb5 10.Qe2 Qd7 11.Nc3 Nc3 12.Bc3 Nf6 13.d4 (13.Bf6 gf6 14.d4 d5+=) 13...Nd5 (13...d5!?-/+) 14.Bb2 Nf4?? (better is 14...Be7+=) 15.ef4+- Be7 16.c4 0-0 17.Rfe1 d5 18.Ne5 Qd8 19.Rac1 Qe8 (19...Bd6 20.cd5 ed5 21.Qf3+-) 20.Qc2 (20.cd5!? ed5 21.Nc6 Bd6+-) 20...c5 21.dc5 Bc5 22.Nd3 (22.cd5 ed5 23.Ng6 hg6 24.Re8 Rae8+-) 22...Be7? (22...d4+-) 23.cd5 ed5 24.Qc3 Qd7 (24...f6+-) 25.Qg7 1–0. Fournier,Frederic (1945) – vlakix, Active, 2005.

4.b5 Na7 5.e3 d5=.

4.b5 Na7 5.e3 Qg5 6.Nf3 Qc5 7.d4 (7.d4 Qh5 8.c4+/–) 1–0. Fournier,Frederic (2015) – azmtsc (1730), Active, 2004.

4.b5 Nce7 5.a4 c6 6.c4 d5 7.e3 Nf5 8.Nf3 g6?? (8...Ngh6 9.Nc3=) 9.d4 (better 9.Bh8 Nf6 10.bc6 bc6 11.Ne5+-) 9...f6 10.Nc3 Nd6 (better 10...Bb4+=) 11.Bd3 (11.c5 Nf5+/-) 11...f5?? (better 11...dc4!? 12.Bc2 cb5 13.ab5 Bd7=+) 12.0-0 (12.c5 Nf7+/-) 12...Bh6 (12...Nc4 13.Bc4 dc4 14.Ne5+/-) 13.Re1 (13.c5 Ne4+-) 13...Qd7 (better 13...dc4!? 14.Be2 Ne7+/-) 14.Ne5+- Qe7 15.bc6 bc6 16.Nc6 (16.Nc6 Qb7 17.Nb5 Qc6 18.cd5 ed5 19.Rc1+-) 1-0. PrAnnaGo (2560) - Ronan mac, ChessWorld.net, 2006.

4.e3 a6 5.c4 bc4 6.Bc4 Nf6 7.Nf3 Be7 8.d4 0-0 9.0-0 Bb7 10.Nbd2 Rc8 11.Rc1 Na7 12.Qe2 d6 13.Rc2 e5? (13...c5 14.bc5 dc5 15.dc5 Bc5 16.Ba6 Ba6 17.Qa6 Be7+/–) 14.de5+- Ne4 15.Rfc1 (15.Ba6!? Ba6 16.Qa6 Nd2 17.Rd2 Ra8+-) 15...Nd2 16.Qd2 Bf3 (16...c5 17.ed6 Qd6 18.Qd6 Bd6 19.Rd2+-) 17.gf3 Nb5 (17...c5 18.Ba6 Rc6 19.b5+-) 18.Bb5 (better is 18.a4 de5 19.Qd8 Rcd8 20.ab5 ab5 21.Bb5 Bb4 22.Rc7+- (22.Be5?! Rd5+/–)) 18...ab5 19.ed6 Bd6 20.f4 Qh4 21.Qd4 (better is 21.Qd5!?+/–) 21...Rfd8?? (better is 21...Qg4 22.Kf1 Rfd8=) 22.Qg7 1–0. Fournier,Frederic (1790) – mcguiver, Active, 2006.

4.e4 a6!?=.

4.e4 h6? 5.Bb5+/– Bb7 6.Ba4 a6 (6...Qg5 7.Nf3 Qg6 8.d3+-) 7.d3 Bd6 (better is 7...Nf6!?+/–) 8.Bg7+- Rh7 9.Bc3 f6 (9...a5 10.b5 Ne5 11.g3+-) 10.Qh5 (10.Qg4 Kf7+-) 10...Ke7 11.Ne2 Rg7 12.Nd2 Rg5 (12...Rb8 13.0-0+-) 13.Qh3 Qe8 14.f4 Rh5 (14...Rg6 15.e5! Ne5 16.Ne4+-) 15.Qe3 (15.Qf3 a5 16.g4 ab4 17.ab4 Ra4 18.Ra4 Rb5+-) 15...Qg6 (15...e5 16.Nc4 ef4 17.Nf4 Bf4 18.Qf4+-) 16.Ng3 Rh4 (16...Ke8+-) 17.Nf5! ef5 (17...Kd8 18.Nh4 Qg4 19.g3+-) 18.ef5 Kf7 (18...Kd8 19.fg6 Nce7 20.Ne4 Bf4 21.Qf2 Ng6 22.Bb3 Be4 23.Bg8+-) 19.fg6 Kg6 (19...Kg7 20.0-0 Nge7 21.Bc6 Bc6 22.Bf6 Kf6 23.Ne4 Be4 24.Qd4 Kg6 25.Qe4 Kg7 26.Qa8 Rf4 27.Qe8+-) 20.Qg3 Kh5 21.Bb3 Bf4 22.Bf7 (22.Bg8?! Bg3 23.Ke2 Rg8 24.hg3 Rh1 25.Rh1 Kg6+/–) 1–0. michaelbuss (2840) – fuuusedale, ChessWorld.net, 2015.

4.b5 Na5=.

4.b5 Ne5?? 5.Be5+- Bb7 6.e3 Nf6 7.Nf3 Ne4 8.Be2 Bc5 9.0-0 a6 10.ba6 Ba6 11.Ba6 Ra6 12.d3 Ra4 (12...Nf6+-) 13.de4 Re4 14.Qd3 Ra4 (14...Rg4 15.Rd1 f6 16.Bf4+-) 15.Bd4 (15.Bg7 Rg8 16.Qh7 Rg7 17.Qg7 Bf8+-) 15...e5 (15...Bd4 16.Nd4 0-0 17.Nc3+-) 16.Bc5 bc5 17.Ne5 Qg5 (17...Qe7 18.Nc3 Ra8+-) 18.Qd7 Kf8 19.Qf7 1–0. Fournier,Frederic – harrymass, Active, 2004.

4.e3 Bb7 5.Nf3 Nf6 (--> 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Nc6).

4.Nf3 Bb7 5.e3 Qe7 6.d4 0-0-0 7.c4 d6 8.Nbd2 h5 9.Qb3 h4 10.h3 Nf6 11.a4 a5 12.b5 Na7 13.Rc1 Qe8 14.Be2 Rg8 15.Nh4 g5 16.Nhf3 g4 17.hg4 Ng4 18.g3 f5 19.Ba3 Kb8 20.c5 dc5 21.dc5 Rc8? 22.c6 Ba8 23.Bc4 Ba3 24.Qa3 e5? 25.Bg8 Qg8 26.Nh4 f4 27.ef4 ef4 28.Kf1 fg3 29.Qg3 Rf8 30.f3 Ne3 31.Kf2 Ng4 32.Kg2 Ne3 33.Kh2 Qa2 34.Rcd1?? Qa4?? 35.Rhg1?? Nd1 36.Rd1 Qd1 37.Ne4 Qe2 38.Kh3 Rc8 39.Nf2 Qb5 40.Kg2 Qc6 41.Nf5 Qf3! 42.Qf3 Bf3 43.Kf3 a4 44.Ke4 b5 45.Nd3 Kb7 46.Ne3 c6 47.Nc5 Kb6 48.Ne6 Ka5 49.Kf5 b4 50.Nc2 a3 0–1. futsalboy (1665) – saab78 (1675), kurnik, 2011.

4.Nf3 Bb7 5.g3 Nf6 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Nc6).

4.Nf3 Nf6 5.g3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Nc6).

4.e3 c6 5.Nf3 f6 6.d4 g6 7.Bd3 Bg7 8.c4 b6 9.Nbd2 Nh6 10.c5 b5 (10...0-0 11.0-0+/–) 11.Qc2 (11.a4 ba4 12.Qa4 0-0+/–) 11...Bb7 12.Nh4 (12.0-0 0-0+/–) 12...0-0+= 13.f4 (13.0-0 f5+=) 13...a6 (13...Nd5 14.Nf1+=) 14.Rg1 (14.Ne4!?=) 14...Ng4 15.Ke2 a5 (15...Nh2!? 16.Ne4 Ng4+=) 16.h3= Nh6 17.g4 ab4 18.ab4 Qc7 19.g5 (19.Nhf3!?=) 19...fg5-/+ 20.fg5 Nhf5 21.Bf5 Nf5 (21...ef5 22.Qb3 Nd5 23.Nhf3-/+) 22.Nf5 Rf5 (22...Qh2 23.Kd3 ef5 24.Nb3 Qh3 25.Rh1+=) 23.Ne4 Qh2 (23...Raf8!? 24.Rg2 Ra8=) 24.Kd3+= Ra1?? (better is 24...Qc7+=) 25.Qh2+- Ra2 (25...Rg1 26.Qg1 Rf8+-) 26.Bc3 (better is 26.Qb8 Rf8 27.Qb7 Rb2 28.Qd7+-) 26...Rh2-+ 27.Nd6 Ba6 28.Ra1? Rh3 29.Ra6? Rff3 30.Ra8 Bf8 31.Bd2 Rf2 32.Rd8 Rhh2 33.Bc3 Ra2 34.Ne4 h6 35.gh6 Rh6= 36.Rd7 Bg7 37.Rd8 Kh7?? 38.Ng5 1–0. slavisa10 – windmill, Live Game Caissa's Web, 2004.

4.e3 Ng6 5.d4 Nf6 6.Nd2 d6 7.c4 b6 (7...e5 8.de5 Ne5 9.Ngf3+=) 8.Ngf3+= a5 9.Bd3 Bb7 10.b5 Be7 11.h4 Nf8 12.h5 h6 13.e4 N8d7 14.Qe2 White plans e5 14...Nh7 15.Rd1 Bf6 (15...0-0 16.Qe3+=) 16.e5+/- de5 17.de5 Be7 18.Ne4 Qb8 19.Bc2 0-0?? (19...Nc5 20.Nc5 Bc5 21.0-0+/-) 20.0-0 (better 20.Rd7 Re8 21.0-0+-) 20...Qc8 21.Ng3 (21.Qd3!? f5 22.Qd7 fe4 23.Qc8 Rac8 24.Nd4+/-) 21...Rd8+= 22.Rfe1 Ndf8 23.Ne4 Rd1 24.Rd1 Qe8 25.Qd3 Rd8 26.Qe3 Rd1 27.Bd1 Qd8 28.Bc2 Be4 29.Qe4 Ng5 30.Ng5 Bg5 31.f4 (31.Qd3 Qe8+/-) 31...Bh4 (31...Be7 32.Qe1=) 32.Qe3 (32.Qd4+=) 32...Nd7 (better 32...Be7!? 33.Qe1 Bc5 34.Kh2 Bd4=) 33.Qd3 Be7?? (better 33...Kf8+/-) 34.Qh7 Kf8 35.Qh8 1-0. TwelveTeen (2495) - littleplotkin (2445), lichess.org, 2016.

4.e3 b5 5.d4 (better 5.Bb5!? Bb7 6.Nf3+-) 5...a6 6.c4 bc4 7.Bc4 d5 8.b5 (8.Bd3 Bd6+=) 8...ab5 (8...Na7!? 9.Bd3 ab5-/+) 9.Bb5= Bd7 10.Ne2 (10.Nc3 Bd6=) 10...Na5 (better 10...Qb8 11.a4 Na5 12.Bd7 Nd7=+) 11.Nec3?? (11.Bd3=) 11...Nc4?? (better 11...Bb5 12.Nb5 Qb8-+) 12.Bd7 (better 12.Bc4 dc4 13.Nd2+=) 12...Qd7-/+ 13.0-0?? (13.Qc1 c5-/+) 13...Bd6 (better 13...Nb2 14.Qe2 Nc4-+) 14.Bc1=+ 0-0 15.a4 e5 (15...Rfb8 16.Ba3-/+) 16.de5 (16.Nd2!? Nd2 17.Bd2=+) 16...Be5-/+ 17.Ba3 (17.Qd3 Qd6 18.f4 Bc3 19.Nc3 Rfe8-/+) 17...Rfe8 (better 17...Rfb8 18.Ra2 Ra5-/+) 18.Nd2?? (better 18.Bc5-/+) 18...Bc3-+ 19.Nc4 dc4 (better 19...Ba1 20.Bb2 dc4 21.Qa1 Ra4 22.Qc1-+) 20.Qd7 Nd7 21.Rad1 (21.Rac1 Be5 22.Rc4 Nb6-+) 21...Nb6 (21...Ra4?! 22.Rd7 Ra3 23.Rc7-+) 22.a5 (22.Rc1 Be5-+) 22...Ba5 (better 22...Ra5 23.Bc1-+) 23.Rd4 (23.h3 Re5-+) 23...Rad8 (23...Bc3 24.Bc5 Bd4 25.Bd4-+) 24.Rc1 (24.Bc5 c3 25.h3 Rd4 26.Bd4 Na4-+) 24...Rd4 25.ed4 Nd5 (better 25...Bd2!? 26.Rf1-+) 26.Rc4 (26.h3 Bc3 27.Bc5-+) 26…Re1 0–1. pat_cash87 – MeglioMorto, lichess.org, 2020.

4.e3 Be7 5.Nf3 0-0 6.Bc4 d5 7.Bb3 Bd6 8.0-0 a6 9.d3 a5 10.b5 Na7 11.a4 c6 12.bc6 Nc6 13.c3 Qe7 14.Nbd2 Qc7 15.Re1 e5 16.Qc2 Bg4 17.e4 d4?? (better is 17...de4 18.de4 Rad8+=) 18.cd4+/– ed4? (18...Bf3 A) worse is 19.gf3 ed4 (19...Nd4?! 20.Qc7 Bc7 21.f4=) 20.Nf1 Rac8+=; B) 19.Nf3 ed4 20.e5 (20.Bd4?! Nd4 21.Nd4 Bh2 22.Kh1 Qd7=) 20...Ne5 21.Ne5 Be5 22.Qc7 Bc7 23.Bd4+/–) 19.h3?? (better is 19.e5 Bf3 20.ed6 (20.Nf3?! Ne5 21.Ne5 Be5+/–) 20...Qd6 21.Nf3+- (21.gf3?! Qf4 22.Bc4 Rfe8+/–)) 19...Bf3+= 20.Nf3 (worse is 20.gf3 Qd7 21.Nc4 Bb4-+) 20...Bb4 21.Re2 Rfe8 22.e5 Rac8?? 23.ef6+- Re2 24.Qe2 Rd8 25.fg7 Qd7 26.Rc1 Re8 27.Qd1 Qf5 28.Nh4 Qe5 29.Qg4 Bd2 30.Rd1 Bb4 31.Nf5 Bc3 32.Bc3 dc3 33.Nh6 1–0. pieeater – Tonyone, ChessWorld.net, 2011.

4.e3 h5 5.d4 Ne4 6.Bd3 f5 7.Nd2 d5 8.c4 g5 (8...Qg5 9.g3+=) 9.Ngf3 (9.Ne4!? fe4 10.Be2+/–) 9...g4+= 10.Ne5 Ne5 11.de5 dc4 12.Nc4 c5? (better is 12...Qd5+=) 13.Be4+- Qd1 14.Rd1 fe4 15.Nd6 Bd6 16.ed6 (16.Rd6?! cb4 17.ab4 a5+=) 16...Bd7?? (better is 16...Rg8 17.bc5 Bd7+-) 17.Bh8 cb4 18.ab4 a5 19.ba5 Ra5 20.0-0 (20.h3 gh3 21.Rh3 Rg5+-) 20...b5 (20...Rd5 21.Bf6+-) 21.Rb1 (21.Ra1 Ra4+-) 21...Ra4 22.Rfd1 b4 (22...h4 23.h3 gh3 24.gh3+-) 23.Rd4 Kf7 (23...b3 24.Ra4 Ba4 25.Ra1+-) 24.Rdb4 Ra3 (24...Ra8 25.Bd4+-) 25.Be5 (better is 25.Rb7 Ke8 26.Rb8 Kf7+-) 25...h4 (25...Bc6 26.Rc1 Ra5 27.Bb2+-) 26.Rb7 Ke8 27.Rb8 Kf7 28.R1b7 Ra1 29.Ba1 (29.Ba1 Kg6 30.Rd7 e5 31.Rg8 Kf5 32.Re7 h3 33.Re5 Kf6 34.Ree8 Kf5 35.Bh8 hg2 36.Re5) 1–0. Fournier,Frederic – Jahr, Active, 2007.

4.Nf3 b5 5.e3 a6 6.c4 bc4 7.Bc4 Bb7 8.0-0 d5 9.Be2 Bd6 10.d4 0-0 11.Nbd2 Ne7 12.Ne5 Ng6 (12...a5 13.b5=) 13.Nb3+/– Qb8 14.Qc2 Ne4? (better is 14...Be5 15.de5 Nd7+/–) 15.Nd7+- Qe8 16.Nf8 Qf8 17.f3 Nf6 18.Bd3 Bc8 19.Nc5 Bc5 20.bc5 c6 21.Bc3 Bd7 (21...Nd7 22.Bg6 fg6 23.Qa4+-) 22.Rab1 a5 23.Rb7 Qc8 24.Rfb1 Be8 (24...Qd8 25.Qb2 Bc8 26.Rb8 Rb8 27.Qb8+-) 25.Ba5! Ra5 26.Rb8 (26.Rb8 Qc7 27.R1b7 Qb7 28.Rb7 Ra3 29.Bg6 hg6 30.Kf2+-) 1–0. Fritz 11 – pc4fun, internet, 2013.

4.Bc3 c6 (4...c5 A) 5.Nf3 d5 (5...Nf6 6.e3 d5 7.Be2 Bd6 8.0-0 a6 9.Be5 0-0) 6.e3 Nf6 7.Be2 Bd6 8.0-0 0-0 9.d4 c4; B) 5.e3 Nf6 (5...d5 6.Qg4 Nf6 7.Qa4 b6 8.Nf3 Bd6 9.Be2 0-0) 6.Nf3 (6.Be2 d5 7.Nf3 Bd6 8.Be5 0-0 9.0-0 a6) 6...d5 7.Be2 Bd6 8.0-0 a6 9.Be5 0-0; C) 5.e4 d5 6.e5 (6.ed5 ed5 7.Nf3 Be6 8.d4 Nf6 9.Be2 Ne4) 6...c4 7.d4 a6 8.ba6 b5 9.Bd2 Ra6; 4...Nc4 5.e3 Nb6 6.Nf3 (6.Be2 d5 7.Nf3 Nf6 8.0-0 Bd6 9.Be5 0-0; 6.Bd3 Nf6 7.Nf3 d6 8.a4 e5 9.Be2 Nbd5) 6...d5 7.Be2 Nf6 8.0-0 Nbd7 9.Bb2 Bd6) 5.bc6 (5.e3 Nf6= 6.Nf3 (6.Be2 cb5 7.Bb5 a6 8.Bd3 d5 9.Ne2 Bd6) 6...d5 7.Ne5 Nd7 8.Qg4 Ne5 9.Be5 Bd7) 5...bc6 (5...Nc6 6.Nf3= (6.e3 Nf6 7.Nf3 d5 8.Ne5 Ne4 9.Nc6 bc6) 6...Nf6 7.e3 d5 8.Bb5 Bd6 9.Ne5 Qc7) 6.Nf3 (6.e3 Nf6 7.Nf3 d5 8.Ne5 Bb7 9.d4 Ne4; 6.e4 Nf6 7.e5 Nd5 8.Nf3 Rb8 9.Be2 Bc5) 6...Ba6 (6...Rb8 7.e3 d6 8.Nd4 Ne7 9.Qf3 Bd7) 7.e3 (7.d3 Nf6= 8.e4 Rb8 9.Nbd2 Be7) 7...Qb6 (7...Bf1!? 8.Rf1 Nf6= 9.Qe2 Nb7) 8.Ba6 (8.d3 Rb8 9.Nbd2 Qc7) 8...Qa6 9.Qe2 (9.d3 Rb8+=) 9...Nc4 (9...Qe2 10.Ke2 Nb7 11.Na3=) 10.Ne5+= Ba3?? (better is 10...d5+=) 11.Nc4+- d5 (11...Kf8 12.Qg4 Nf6 13.Bf6 gf6 14.Nca3 Ke7+-) 12.Nd6! Kd7 (12...Bd6 13.Qa6) 13.Qa6 Rb8 14.Qa7 Kd8 15.Ba5 (15.Ba5 Rb6 16.Bb6) 1–0. Trkn – Leifern, itsyourturn.com, 2001.

4.d3 b6 5.c4 Bb7 6.e4 Nf6 7.e5 Ng8 8.Nf3 g6 (8...a6 9.Be2=) 9.Be2 Bg7 10.0-0 Ne7 11.Ng5 d5 12.cd5 (12.f4 a6+=) 12...Bd5 (12...Qd5 13.Nf3 Qb5 14.Qc2+=) 13.Bf3 Bf3 14.Qf3 (worse is 14.gf3 Qd5 15.Nc3 Qe5-/+) 14...Rb8?? (better is 14...0-0+=) 15.Qf7+- Kd7 16.Qe6 Ke8 17.Qf7 Kd7 18.e6 Kc8 19.Bg7 Re8 20.Nh7 Qd3 (20...Nf5 21.Bf6 Ne7+-) 21.Qe8 Kb7 22.Qe7 Nc4 23.Na3 (better is 23.Nc3 Qf5+-) 23...Na3 24.Be5 (24.Rad1!? Qb5 25.Qa3 Rg8 26.Qf3 Ka6+-) 24...Nb5 25.Nf6 Qc4 26.Rfc1 Qa2 27.Ra2 Rc8 28.Nd7 (28.Qd7 a5 29.Ra5 Nc3 30.Rc3 ba5 31.Rb3 Ka6 32.Qc8 Ka7 33.Qb7) 28...a6 29.Nb6! Kb6 (29...Ka7 30.Nc8 Ka8 31.Ra6 Kb7 32.Rb6 Ka8 33.Ra1 Na3 34.Ra3) 30.Qc5 Kb7 31.Qc6 Kb8 32.Ra6 Na7 33.Rb1 (33.Rb6) 33...Nb5 (33...Nb5 34.Rb5) +-. tromar (1745) – HONEYMONSTER3, GameColony.com, 2002.

4.e3 a6 5.a4 ab5 6.ab5 b6 7.Nf3 Bb7 8.d3 Ne7 9.Be2 Nd5 10.0-0 Bd6 (better is 10...Nf6!?+=) 11.Bg7+/– Rg8 12.Bb2 Nf6 13.Nbd2 Bf3 (13...Qe7!?+-) 14.Bf3 Nd5 15.Ne4 f5 (15...Be7 16.c4 Nb4 17.Nf6 Bf6 18.Bf6 Qf6 19.Ba8+-) 16.Nd6 cd6 17.c4 Nc4 (17...Ne7 18.Ba8 Qa8 19.Qh5 Kd8+-) 18.Ra8 Qa8 19.dc4 Qa2 20.Qd4 Nb4 (20...Nc7 21.Qf6 Rg6+-) 21.Ra1 Qb3 22.Ra8 Kf7 (22...Ke7 23.Qf6) 23.Qf6 1–0. Janek – Chris, internet, 2016.

4.e3 c6 5.a4 b6 6.c4 a6 7.Nc3 Bb4 (7...Nf6 8.Nf3=) 8.Ne4 Bf8? (8...Nf6 9.Nf6 gf6 10.Rb1=) 9.c5 (9.Nd6 Bd6 10.Bg7 Be5 11.Be5 f6+-) 9...d6? (9...Nh6!?+=) 10.cd6 (better is 10.Nd6!? Bd6 11.Bg7 (11.cd6?! Nf6+/–) 11...Bc5 12.Bh8+-) 10...Bd7 (10...Nh6 11.bc6 Nc6 12.Qf3+=) 11.ba6 Qh4 (11...Bc8 12.Bc3+/–) 12.d3 (12.Qc2 Qd8+-) 12...c5 (12...f5!? 13.Nd2 Nh6+/–) 13.Nf3+- Qd8 (13...Qh6 14.Ne5 f5 15.Qf3 (15.Nd7 Kd7 16.d4 fe4 17.dc5 bc5 18.Bb5 Kd8+-) 15...Ra6 16.Be2+- (16.Nd7?! Kd7 17.Be5 Qg6+-)) 14.Ne5 Nc6? (14...Nh6 15.Qh5 Ra7 16.Bc3+-) 15.d4 (better is 15.Nf7 Kf7 16.Qh5 g6 17.Qf3 Ke8 18.Bh8+-) 15...Ne5 (15...cd4 16.Nd7 Qd7 17.Bb5 Bd6 18.Nd6 Qd6 19.Qd4 (19.ed4?! Nge7+/–) 19...Qd4 20.Bc6 (20.ed4?! Nge7+-; worse is 20.Bd4 Nge7+-) 20...Qd7 21.Bd7 (21.Ba8?! Nf6+/–) 21...Kd7 22.Bg7+-) 16.de5 Nh6 (16...Bc6 17.a5! Qh4 18.Ra4+-) 17.Bb5 (17.a5 Rc8 18.ab6 Qb6+-) 17...Nf5 (17...Rc8 18.Qb3 c4 19.Bd7 (worse is 19.Bc4 Qh4 20.Bd3 Ng4+-) 19...Qd7 20.Qb6+-) 18.0-0 (18.Qb3 Rb8+-) 18...Bb5 (18...Ra7 19.Rc1+-) 19.ab5 Qd7 (19...Ra7 20.Qe2+-) 20.Qb3 g6 (20...Nh6+-) 21.Nf6 (21.Nf6 Kd8 22.Nd7 Kd7 23.Qc4+-) 1–0. GuestNSBZ – GuestHQLC, freechess.org, 2017.

4.e3 c6 5.c4 a6 6.a4 b6 7.Nc3 Bb7 8.Nf3 Nf6 9.Be2 Bb4 10.0-0 Bc3 11.Bc3 h6 12.Qc2 0-0 13.d4 c5 (13...cb5!? 14.Ba5 ba5 15.ab5 ab5 16.cb5 Be4+=) 14.dc5 bc5 15.Qb2 d6 16.Rfd1 Rb8 17.Bf6 gf6 18.Rab1 Bf3 19.Bf3 Nc4 20.Qc3 ab5 21.ab5 Ne5 22.Be2 Kg7 23.f4 Ng6 24.Rb2 Qb6 25.Rbd2 d5 26.Ra1 Ra8 27.Rda2 Ra2 28.Ra2 c4 29.Bc4?? (better is 29.f5 Ne5 30.fe6 fe6 31.Rb2-+) 29...dc4-+ 30.Qc4 Rb8 (30...Qe3!? 31.Rf2-+) 31.Kf2 e5 (better is 31...Qb5!? 32.Qb5 Rb5 33.h3-+) 32.Ra6 (32.f5 Ne7 33.Rb2-+) 32...Qb5 (32...Qb5 33.Qb5 Rb5-+) 0–1. Fournier,Frederic (2040) – cucho90 (2005), Active, 2004.

4.e3 d5 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Na5 4.e3 e6).

4.e3 Nf6 (--> 1.b4 Nf6 2.Bb2 Nc6 3.b5 Na5 4.e3 e6).

4.e3 Qg5 5.Nf3 Qg6 6.Ne5 Qf6 7.Nc4 Nc4 8.Bf6 Nf6 9.Bc4 d5 10.Bd3 Bd6 11.c4 0-0 12.Nc3 Be5 13.f4 Bc3 14.dc3 Rd8 15.0-0 dc4 16.Bh7 Kh7 17.Qd8 Ne4 18.Qc7 Nc3 19.Qf7 Ne2 20.Kh1 b6 21.Rf3 c3 22.Rh3 Black king mated 1–0. cutflower (2510) – themuttsknutts (1765), ChessWorld.net, 2010.

4.e4 b6 5.c4 Bb7 (5...a6 6.Nc3=) 6.Nc3 Nf6 7.d3 (7.e5 Ne4 8.Ne4 Be4=) 7...Bb4 (7...a6 8.e5 Ng8 9.Nf3=) 8.Nf3 (8.a3 Be7=) 8...c6 (8...a6 9.a3 Bc3 10.Bc3 ab5 11.cb5=) 9.a3 Bc3 (9...Be7 10.e5 Nh5 11.Bc1 cb5 12.Nb5=) 10.Bc3 cb5 (10...d6 11.Rb1+=) 11.e5 Ng4 12.h3 Nh6 13.cb5 a6 (13...Rc8 14.Rc1=) 14.Ba5 (14.ba6 Ra6 15.d4 Ra8+=) 14...ba5 15.d4 (15.ba6 Ra6 16.d4 Rb6=) 15...ab5= 16.Bb5 Qb6 (16...Rc8 17.Bd3+=) 17.Rb1 Bc6 (17...Qa7 18.Bd3+=) 18.Bd3 (18.Bc6 Qc6 19.0-0 0-0+/–) 18...Qc7 (18...Qa7 19.0-0+=) 19.0-0+/– a4 (19...Rd8 20.Ng5+/–) 20.Ng5 Qa5 (20...Qa7 21.Bc2+/– (worse is 21.Nh7 Qd4 22.Re1 Qd5+=)) 21.Qc2 (21.Rb4 Rc8+/–) 21...Nf5 (21...Rc8 22.Rfc1+/–) 22.Bf5+- ef5 23.Qf5 Bd5?? (better is 23...Qd5 24.Nf3 0-0+/–) 24.e6+- (24.Nh7?! Qd8+-) 24...Be6 (24...f6 25.ed7 Kd8+-) 25.Ne6 Qf5 26.Ng7 Kd8 (26...Ke7 27.Nf5 Kf6 28.Nd6+-) 27.Nf5 1–0. Wall,Bill – Spirant, internet, 2004.

4.e4 b6 5.Ne2 Bb7 6.Ng3 Qh4 7.d3 (7.Qh5 Qh5 8.Nh5 A) 8...Be4? 9.d3+- (9.Bg7 Bg7 10.Ng7 Kf8-/+); B) 8...f6=) 7...Ne7 (7...a6 8.ba6 Ra6 9.Nd2+=) 8.Bc3 Ng6 9.Ba5 (9.Be2 a6 10.ba6 Ra6=) 9...ba5= 10.Qd2 Nf4 (10...Bb4!? 11.c3 Bd6=) 11.Qa5+= Bc5 (11...Bd6!?+=) 12.Qc7+- Bc8?? (better 12...Qf6 13.c3 Bf2 14.Kd1 Bc8+-) 13.Qc5+- Ng2 (13...Bb7+-) 14.Bg2 Qf4 (14...Qe7 15.Qc7 Qd8 16.Qd8 Kd8 17.e5+-) 15.Qe3 (better 15.e5 Rb8 16.b6 d5 17.ba7 Qe5 18.Ne4 Kd7 19.ab8R Qb8+-) 15...Qe5 16.d4 Qb5 17.Qb3 (17.Nd2 Qc6 18.Nf5 Rg8+-) 17...Qa5 18.Nc3 (18.Nd2 Ba6+-) 18...0-0 19.0-0 (19.Nge2 Ba6 20.Qa4 Qa4 21.Na4 Rac8+-) 19...Ba6 20.Rfd1 (20.Rfb1 Rac8 21.Nd1 Qe1 22.Nf1 Bf1+-) 20...Rab8 (20...Rfc8 21.Nb1+-) 21.Qa4 Qc3 22.Qa6 Qc2 (22...Qc7 23.c3+-) 23.Qa7 (23.Rac1 Qb2+-) 23...Ra8 (23...Rb2 24.d5+-) 24.Qd7 Ra2 25.Ra2 Qd1 26.Bf1 g6 (26...e5 27.d5+-) 27.Ra7 h5 28.e5 Qf3 (28...h4 29.Ne2+-) 29.Qb7 (29.Bg2 Qd1 30.Nf1 h4+-) 29...Qd1 (29...Qb7 30.Rb7 Rd8+-) 30.Ne4 (better 30.Qe4+-) 30...Qg4= 31.Ng3 h4?? (31...Qd1 32.Qe4 Qb3+-) 32.f3 (better 32.Qe4 Qg5 33.f4+-) 32...Qd4 33.Kg2 hg3 34.hg3 Qd2 35.Kh3 Qh6 36.Kg2?? (36.Kg4 Qh5 37.Kf4 Qf5 38.Ke3 Qe5 39.Kf2 Qd4 40.Kg2 Qd2 41.Kg1 Qe3 42.Kh2 Qh6 43.Bh3 Qd2 44.Bg2 Qh6 45.Kg1 Qc1 46.Kf2 Qd2 47.Kf1 Qd1 48.Kf2 Qd2 49.Kg1 Qc1 50.Kh2 Qh6 51.Kg1 Qc1=) 36...Qe3?? (36...Qd2 37.Kg1 Qe3 38.Kh2 Qh6 39.Bh3 Qd2 40.Bg2 Qh6 41.Kg1 Qc1 42.Kf2 Qd2 43.Kf1 Qd1 44.Kf2 Qd2 45.Kg1 Qc1 46.Kh2 Qh6 47.Kg1 Qc1=) 37.Kh3 (better 37.f4!? Kg7 38.Ra8 Ra8 39.Qa8 Qd2 40.Kh3 Qd1+-) 37...Qe5?? (better 37...Qh6 38.Kg4 Qh5 39.Kf4 Qf5 40.Ke3 Qe5 41.Kf2 Qd4 42.Kg2 Qd2 43.Kg1 Qe3 44.Kh2 Qh6 45.Bh3 Qd2 46.Kg1 Qe1 47.Kg2 Qe2 48.Kh1 Qe1 49.Kg2 Qe2 50.Kg1 Qe1 51.Kg2=) 38.Bd3 (38.Qe4 Qc5 39.Ra8 Ra8 40.Qa8 Kg7+-) 38...Qh5 (38...Qe3 39.Ba6+-) 39.Kg2 Qe5 (39...Qg5 40.f4 Qf6 41.Qe7 Qb2 42.Kh3 Qh8 43.Qh4+-) 40.Be4 (better 40.Bg6!? Qf6 41.Bd3 Rd8+-) 40...Kg7 41.Qe7 Qd4 42.g4?? (better 42.Rd7 Qf6 43.Qf6 Kf6 44.Kf2+-) 42...Qd2= 43.Kg3 Qe1 44.Kf4 Qd2 45.Kg3 Qe1 46.Kf4 Qh1 (46...Qd2 47.Ke5 Qb2 48.Kd6 Qb6 49.Ke5 Qb2 50.Kd6 Qb6 51.Ke5 Qb2=) 47.Kg3 (better 47.Rc7+-) 47...Qg1 48.Kf4 White plans g5 48...Qh2 (better 48...Qh1!?=) 49.Ke3+- Qg1 50.Kf4 (better 50.Ke2 Qg2 51.Ke1 Qg1 52.Kd2 Qf2 53.Kd3 Qf1 54.Kd4 Qg1 55.Kc4 Rc8 56.Kb5 Qf1 57.Kb6 Qf2 58.Kb7+-) 50...Qh2= 51.Ke3 Qg3?? (51...Qg1 52.Ke2 Qg2 53.Ke1 Qg1 54.Kd2 Qf2 55.Kd3 Qf1 56.Kd4 Qg1 57.Kc4 Rc8 58.Kb5 Qf1 59.Kb6 Qf2 60.Kb7 Rc4+-) 52.g5 (52.Ra1 Rb8 53.Qa3 Rh8+-) 52...Qh4? (better 52...Qe1 53.Kd4 Qd2 54.Kc4 Qc1 55.Kb5 Qb2 56.Qb4 Qe5 57.Kc4 Rc8 58.Kb3 Qf4 (58...Qg5? 59.Rf7 Kf7 60.Qb7 Kf6 61.Qc8 Qe3 62.Kb4+-) 59.Qd4 Kg8+-) 53.Qf6 Kg8 54.Bg6?? (better 54.Ra1+-) 54...Qe1-/+ 55.Kf4 Threatening mate... how? 55...Qd2 (55...e5!? 56.Kg4 Qg1 57.Kh3 Qa7=+) 56.Kg4 (56.Kg3 Qe1 57.Kg2 Qe2 58.Kg3 Qe1 59.Kg2 Qe2 60.Kg3 Qe1=) 56...Qg2=+ 57.Kf4 Threatening mate... how? 57...Qh2 58.Kg4 (58.Ke4 Qc2 59.Ke3 Qc5 60.Qd4 Qg5 61.Kf2 Qg6=+) 58...Qg2 (better 58...Qg1!? 59.Kh3 Qa7-/+) 59.Kf4= The mate threat is Bxf7 59...e5 60.Qe5?? Theme: Deflection from g6 (60.Ke5 Decoy to e5 60...Qb2) 60...Qh2 61.Ke4 Do you see the mate threat? 61...Qh4 (61...Qe2 62.Kd4 Rd8 63.Qd5 Rd5 64.Kd5 Qe6 65.Kd4 Qb6 66.Ke5 Qb8 67.Ke4 fg6 68.Ra1 Qb4 69.Kd5 Qb3 70.Kd6 Qd3 71.Ke5 Qc3 72.Ke4 Qa1 73.f4-+) 62.Ke3 (better 62.Kd3 Rd8 63.Kc3 Rc8 64.Kb3 Qc4 65.Ka3 Qc3 66.Qc3 Rc3 67.Kb4 Rf3 68.Bc2+-) 62...Qe1-+ 63.Kf4 (63.Kd4 Rd8 64.Qd5 Rd5 65.Kd5 Qe6 66.Kd4 Qb6 67.Ke5 Qb8 68.Ke4 fg6 69.Ra1 Qb4 70.Kd5 Qb3 71.Ke4 Qc2 72.Kf4 Qf5 73.Kg3 Qe5 74.Kf2 Qa1 75.Ke2-+) 63...Qd2 (better 63...fg6 64.Qf6 Qb4 65.Ke3 Rf6 66.gf6 Qc5 67.Kd3 Qa7-+) 64.Kg3+- Qd8 65.Bf7 (better 65.Ra6 f6 66.gf6 Rf6 67.Bh7 Kf7 68.Ra7 Kf8 69.f4+-) 65…Rf7 (65...Rf7 66.Rf7 Kf7 67.Qf6 Qf6 68.gf6 Ke6+-). aravind555 (1615) – mecroy393939, lichess.org, 2019.

4.e4 Bc5?? 5.Bg7+- Qh4 6.Qf3 d5 7.Bh8 de4 8.Qg3 Qg3 9.hg3 c6 (9...h6 10.Rh5 f5 11.Be5+-) 10.Rh7 a6 11.ba6 ba6 12.Nc3 Rb8 (12...f5 13.Na4 Ra7 14.Ra7 Ba7 15.Bc3+-) 13.Ne4 Bb4 (13...Be7 14.Be5 Rb4 15.d4+-) 14.Be5 Rb5 (14...f5 15.Bb8 fe4 16.c3+-) 15.Bb5 ab5 16.Rh8 Nc4 17.Nf6 Kd8 (17...Ke7 18.Ng8 Kf8 19.Nf6 Kg7 20.Rg8 Kh6 21.Bf4) 18.Rg8 Ke7 (18...Bf8 19.Rf8 Ke7 20.Re8) 1–0. Woschkat,Karl_Heinz (1890) – VHopffgarten,Clemens (1960), remoteschach.de, 2002.

4.e4 d5 5.ed5 Qd5 (5...ed5 6.Nf3=) 6.Nc3 (6.Nf3 Nf6+=) 6...Qg5 (6...Qc5 7.Nf3=) 7.Nf3 Qg6 (7...Qf4 8.Ne2 Qd6 9.Ng3+=) 8.Ne5 Qg5 (8...Qf5 9.d4+=) 9.Ne4+/– Qf4 (9...Qh4!? 10.Qf3 f5+/–) 10.Bd3+- f5 (better is 10...Qh6+-) 11.Qh5 g6 12.Ng6 hg6 13.Qg6 (13.Qh8?! fe4 14.Qg8 ed3 15.Qg6 Kd8 16.Bf6 Be7 17.Qd3 Ke8+-) 13...Kd8 14.Nf6 (worse is 14.Bh8 fe4 15.Qe4 Qe4 16.Be4 Nc4+-) 14...Ne7 (14...Bd7 15.Nd7 Kd7 16.Bh8 Bb4+-) 15.Qe8 1–0. DEFFM – GuestDSXP, freechess.org, 2018.

4.e4 d5 5.Qf3=.

4.e4 Qh4 5.Nc3 Bb4 6.Nf3 Qg4 7.a3 Bc3 (7...Be7 8.Be2+=) 8.Bc3+/– (8.dc3 Qe4 9.Qe2 Qe2 10.Be2 a6=+) 8...Qe4? (better is 8...b6 9.Bd3 Nf6+/– (9...Qg2?? 10.Rg1 Qg1 11.Ng1+-)) 9.Be2+- Nc4? (9...Ne7 10.Ba5 b6+-) 10.Bg7 (10...Ne5 11.Be5+- (11.Ne5?! Qg2 12.Bh8 Qh1 13.Bf1 Qh2+-)) 1–0. Wall,Bill – GaryY, internet, 2002.

4.Nf3 Nc4 A) 5.Bd4 a6 (5...d5 6.e3 f6 7.Bc4 dc4 8.e4 Qd7 9.Nc3=; 5...Nd6 6.e3 Nf5 7.Bb2 Nf6 8.Bd3 d5 9.0-0=) 6.ba6 b6 7.e4 Ba6 8.Be2 c5 9.Bc3=; B) 5.Bc3 a6 6.ba6 b6 7.d3 Nd6 8.e4 Ba6 9.Be2=.

4.Nf3 c6 5.a4 cb5 6.ab5 Nc4 (6...d5 7.e3+=) 7.Bd4 b6 (7...d5 8.Nc3+= (worse is 8.Ba7 b6-/+)) 8.e4+/– Bb7?? (better is 8...d5 9.Nc3 de4 10.Ne4 Nd6+/–) 9.Bc4+- Be4 10.0-0 Nf6 11.Nc3 Bb7 12.Re1 d5 13.Bd3 Bd6 14.Ra4 0-0 15.Qe2 Bc8 (15...Qe7 16.Rea1+-) 16.Rea1 h5 (16...Nd7 17.Ra7 Ra7 18.Ra7+-) 17.Bf6 Qf6 18.Ne4! (worse is 18.Ra7 Ra7 19.Ra7 Rd8+-) 18...Qe7 (18...de4 19.Be4) 19.Nd6 Qd6 20.Ne5 f6 (20...g6+-) 21.Qh5 (21.Qh5 f5 22.Re1+-) 1–0. marekt (1815) – redwing777, internet, 2005.

4.Nf3 c6 5.a4 d5 6.e3 cb5 7.ab5 g5 8.Be2 g4 9.Ne5 Nh6 10.Ng4 f5 11.Nf6 Ke7 12.0-0 b6 13.Nd5 ed5 14.Bh8 Nf7 15.Bb2 Nd6 16.Nc3 Nac4 17.Bc1 Be6 18.Bf3 Ke8 19.Ba3 Qd7 20.Nd5 Nb5 21.Nf6 Kd8 22.Nd7 Kd7 23.Ba8 Nba3 24.d3 Ne5 25.f4 Ng4 26.Qf3 (26.h3?? Ne3) 26...Nc2 27.Rac1 Nce3 28.Qc6 Ke7 29.Rfe1 Bd7 30.Qc7 Ke6 31.h3 Nf6 32.Re3 Kf7 33.Bc6 Bc5 34.Rc5! bc5 35.Bd7 Nd7 36.Qd7 Kg6 37.Re6 1–0. Trkn – I's, itsyourturn.com, 2000.

4.Nf3 d5 5.e3 Ne7 (5...Nf6 6.Ne5 Bd6 7.Ng4 Be7 8.Qf3 Ng4 9.Qg4=; 5...f6 6.d4 Bd7 7.Nbd2 c6 8.bc6 Bc6 9.Bd3=) 6.Bc3 c6 7.d4 Qc7 8.Bb4 cb5 9.Bb5=.

4.Nf3 Nf6 5.e3 Ne4 (5...d5 A) 6.Ne5 Nd7 (6...Bd6 7.Ng4 Be7 8.Bd3 0-0 9.0-0 c5) 7.Qg4 c5 8.Qh5 Qe7 9.Bc3 Ne5; B) 6.Be2= Bd6 (6...a6 7.a4 Bd6 8.0-0 0-0 9.Bc3 c5) 7.0-0 a6 8.Nc3 e5 9.Rb1 0-0; 5...a6 A) 6.Nc3 d5 7.ba6 b6 8.a7 c6 9.Rb1 Bd6; B) 6.Bd3 ab5 (6...d5 7.ba6 ba6 8.Nc3 Bd6 9.e4 Nc6; 6...Be7 7.ba6 ba6 8.Nc3 Bb7 9.Rb1 Nc6) 7.Bb5 c6 8.Bd3 d5 9.0-0 Bd6; C) 6.a4 d5 7.Ne5 Bd6 8.Be2 Ne4 9.0-0 f6; D) 6.ba6 b6 7.Nc3 d5 8.Ne5 c6 9.Bd3 Bd6; E) 6.Be2 ab5 (6...Be7 7.a4 0-0 8.0-0 b6 9.d3 Bb7; 6...d5 7.a4 Bd6 8.0-0 0-0 9.Na3 b6) 7.Bb5 c6 8.Bd3 d5 9.Ne5 Bd6) 6.d3 (6.Be2 d5 (6...Be7 7.0-0 0-0 8.d3 Nd6 9.c4 a6) 7.d3 Nd6 8.0-0 Nb5 9.c4 Nd6) 6...Be7?? (better is 6...Nd6+= 7.c4 a6 8.Nc3 Be7 9.Be2 0-0; 6...Nf6 7.Bc3 b6 8.Be2 a6 9.a4 d5) 7.de4+- Bd6 (7...0-0 8.Qd4 f6 9.Bc3+-) 8.Qd2 (better is 8.Bg7 Rg8 9.Bc3 b6+-) 8...Be7 (8...b6 9.Bg7 Rg8+-) 9.Qa5 b6 10.Qc3 Bf6 11.e5 Be7 12.Ba3 Bc5 (12...Ba3 13.Na3 Bb7 14.Bd3+-) 13.Bc5 bc5 14.Qc5 Qe7 (14...Bb7 15.Be2+-) 15.Qc7 Qd8 16.Qd8 Kd8 17.Bd3 Bb7 18.Nbd2 d5 (18...f6 19.c4+-) 19.ed6 Kd7 20.Be4 (20.Ne5 Ke8+-) 20...Rab8 (20...Rhb8 21.Bb7 Rb7 22.Nc4+-) 21.Bb7 (better is 21.Ne5 Kc8+-) 21...Rb7 22.c4 (22.Nc4 f6 23.a4 Rc8+-) 22...Kd6 (22...Rc8 23.Ng5 f6 24.Nh7 Kd6 25.Nb3+-) 23.0-0 (23.Ne4 Ke7+-) 23...f5 (23...Rc8 24.Rfd1 Ke7 25.Ne5+-) 24.a4 e5 (24...Rc7 25.Rfd1+-) 25.Rfd1 Ke7 (25...Ke6 26.Nb3 Rc7 27.c5+-) 26.Ne5 Ke6 27.Ndf3 h6 28.Nc6 Rd7 29.Rd7 Kd7 30.Rd1 Ke6 31.Na7 g5 32.c5 Rh7 33.Rd6 (33.Rd6 Ke7 34.b6+-) 1–0. Trkn – POPPABEAR1, itsyourturn.com, 2001.

5.Nc3 Nf6 (5...a6 6.ba6 Nf6 7.e4 d5 8.ed5 ed5 9.Nb5=; 5...d5 6.Nf3 a6 7.a4 Nf6 8.Bd3 Be7 9.Ne5=; 5...Bb7 6.Nf3 Nf6 7.Be2 a6 8.ba6 Ba6 9.Ba6=) 6.Nf3 a6 7.Be2 ab5 8.Bb5 c6 9.Be2=.

5.c4 Bb7 6.Nf3 c6 (6...a6 7.ba6 Ba6 8.d3=) 7.a4 (7.Be2 a6=) 7...cb5 (7...Rc8 8.Be2=) 8.ab5 Bb4?? (better is 8...Nf6=) 9.Bg7+- 1–0. DEFFM – GuestWKTT, freechess.org, 2016.

5.Be5 a6 (5...Bb7 6.Nf3 Nf6 7.d4 d6 8.Bf6 Qf6 9.Nbd2=; 5...Nf6 6.Nc3 Bb7 7.Nf3 Be7 8.Be2 d6 9.Bg3=) 6.Nc3 d6 7.Bg3 ab5 8.Bb5 c6 9.Qf3=.

5.Nf3 a6 6.Ne5 Nf6 7.Ng4 Ng4 8.Qg4 d5 9.ba6=.

5.Nf3 Bb7 6.c4 c6 7.a4 cb5 8.ab5 Qc7 9.Be5 d6 10.Bc3 (10.Bb2!?=) 10...Nc4=+ 11.Be2 d5 12.0-0 Nh6 13.Qa4 Be7?? (better 13...Qd7=) 14.Bg7+- Ng4 (14...Rg8 15.Bh6 e5+-) 15.Bh8 d4 (15...Bd6 16.h3 Nge5+-) 16.Qc4 Bc5 (16...Qc4 17.Bc4 Bd6 18.Nd4 Bh2 19.Kh1+-) 17.g3 de3 (17...Bd5 18.Qd3 de3 19.de3+-) 18.Qg4 ef2 19.Rf2 (better 19.Kg2!? Qd8+-) 19...Bf2 20.Kf2 Qc5 21.d4 Qc3 (21...Qf8 22.Bf6 Qh6 23.Qg8 Qf8 24.Qh7 Kd7 25.Ne5 Kc7 26.Qc2 Kd6 27.Nc4 Kd7 28.Ra7 Qc8 29.Nb6 Ke8 30.Qh7 Qc5 31.dc5 Ra7 32.Qg8) 22.Qg8 Ke7 23.Bf6 Kf6 (23...Kd7 24.Qf7 Kc8 25.Qe8 Kc7 26.Be5) 24.Qg5 1-0. GuestNRDT – GuestXRVH, freechess.org, 2021.

5.Nf3 Bb7 6.Be2 a6 7.ba6 Ba6 8.0-0 Be2 9.Qe2=.

5.Nf3 Nb7 6.d4 Nd6 7.Bd3 Bb7 8.0-0 a6 9.a4 a5 (9...Nf6 10.c4+=) 10.c4+- Nf6 11.Nbd2 Be7 (11...Nde4 12.Ne4 Ne4 13.Rc1+=) 12.Rb1 (12.c5 Nc8+-) 12...Nf5 (12...0-0 13.Qc2+-) 13.Qc2 d5 14.Bf5 White fights for the Initiative 14...ef5 15.Qf5 dc4 16.Nc4 (16.Rbc1+-) 16...Bf3? (better 16...Be4 17.Qf4 Bb1 18.Rb1 Bd6+=) 17.Qf3+- 0-0 18.Ne5 Bd6 19.Nc6 Qe8 20.d5 Be5?? (better 20...Ne4 21.Qg4 f6+-) 21.Be5 Qe7 (21...Ne4+-) 22.Ne7 (22.Ne7 Kh8 23.Qf6 Rg8 24.Qf7 Rab8 25.Ng6 hg6 26.Qd7 Rge8 27.Qg7) 1–0. aravind555 – Mandhonma, lichess.org, 2018.

5.Nf3 c6 6.Nc3 d6 7.Be2 Nf6 8.0-0 c5 9.d3 Bb7 10.e4 g6 11.Qd2 Bg7 12.Qf4 0-0 13.Rae1 e5 14.Qh4 Nh5 15.Qd8 Rad8 16.g3 Bc8 17.Nh4 Be6 (17...Nf6!?+=) 18.Bh5+/– gh5 19.Nd5 Bd5 20.ed5 Nb7 21.Nf5 f6 22.f4 ef4 (22...Rde8 23.Re4+-) 23.Rf4 Rde8 24.Rfe4 Re4 25.Re4 c4 (25...Rf7 26.Kf2+-) 26.Rc4 Nc5 27.Rf4 Re8 28.Kf1 Nd7 29.Nd6 1–0. b4_player (2175) – newgelh, GameColony.com, 2004.

5.Nf3 Nf6 6.Be2 Nd5 (6...a6 7.a4= (7.0-0 ab5 8.Bb5 Bb7 9.Qe2=) 7...Bb4 8.0-0 0-0 9.Be5=) 7.Nc3 Bb4 (better is 7...a6!?+= 8.Nd5 ed5 9.ba6+=) 8.Nd5+/– ed5 9.Bg7 Rg8 10.Bc3 Bc3 11.dc3 c6 12.0-0 cb5 13.Qd5 Bb7 14.Qf5 Bf3 15.Bf3 Nc4?? (better is 15...Rc8+-) 16.Qe4 Kf8 17.Qa8 Qa8 18.Ba8 Nd2 (18...Ke7 19.Be4+-) 19.Rfd1 Nc4 (19...Ke7 20.Rd2 Ra8 21.Rad1+-) 20.Rd7 Ne5 (20...a5 21.Bd5 Ne5 22.Rd8 Kg7 23.Rg8 Kg8 24.Rb1+-) 21.Ra7 Kg7 22.Bd5 Ng4 (22...Rd8 23.Rd1 Rf8+-) 23.Bf7 Rf8 24.Bh5 Kh6 25.Bg4 Rd8 26.Rd1 Rd1 27.Bd1 Kg5 28.Rh7 Kf5 29.Rh6 b4 (29...Kg5 30.Rc6 Kf5 31.f4 Ke4 32.Kf2 Kf5 33.g4 Ke4 34.Bf3) 30.g4 Kg5 31.Rb6 b3 (31...Kh4 32.f4 b3 33.Rh6) 32.f4 Kh4 33.Rh6 1–0. pierre – vikkey, internet, 2008.

4.c4 a6 5.a3 ab5 6.ab4 Ra1 7.Ba1 bc4 8.Qa4 Bd6?? (better is 8...Ne7+/–) 9.Bg7+- Qe7 (9...Be5 10.Be5 f6 11.Bg3+-) 10.Bh8 Bb4 11.e4 Qd6 (11...f5 12.e5+-) 12.Bc4 c6 13.e5 Qd4 (13...Qc5 14.Bd3+-) 14.Qb4 (14.Qb4 b5 15.Na3+-) 1–0. market (2155) – IMOO (1770), GameColony.com, 2002.

4.c4!? c6 5.a3 cb5 6.ab4 bc4 7.Qa4+/–.

4.c4 c6 5.a3 cb5 6.ab4 bc4 7.Bd4+/–.

4.c4 Nf6 5.a3+- a5 A) 6.Nf3 d5 7.e3 dc4 8.ab4 Bb4 9.Bc4 0-0 10.0-0; B) 6.e3 d5 (6...b6 7.ab4 Bb4 8.Nf3 Bb7 9.Be2 0-0 10.0-0) 7.Nf3 dc4 8.ab4 Bb4 9.Bc4 0-0 10.0-0; C) 6.Bc3 d5 (6...Nc6 7.bc6 dc6 8.Nf3 Be7 9.e4 0-0 10.Qc2; 6...c5 7.e3 d5 8.ab4 cb4 9.Bd4 Bd6 10.Nf3) 7.e3 c5 8.ab4 cb4 9.Bd4 Bd6 10.Nf3; D) 6.e4+- d5 7.ed5 ed5 8.Qe2 Be6 9.ab4 Bb4 10.cd5.

4.c4 Nf6 5.a3+- Nc6 6.bc6 bc6 (6...dc6 7.Nf3 a6 8.Qc2 Be7 9.c5 Rb8 10.e4) 7.Nc3 Ba6 (7...e5 8.Nf3 e4 9.Nd4+- Rb8 10.Rb1; 7...d5 8.Nf3 Bd6 9.Qa4 Bd7 10.Qa5) 8.e4 Bc5 (8...e5 9.Nf3+- Bd6 10.Be2; 8...Bd6 9.Nf3 e5 10.Be2) 9.e5 Ng8 10.Nf3 d6 (10...Rb8 11.Na4 Bb6 12.Bd3+-) 11.Qa4 Bb7 (11...Rb8 12.d4 Rb2 13.dc5+-) 12.Ne4 Bb6 (12...f5 13.ef6! Nf6 14.Nc5 dc5 15.Rb1+-) 13.ed6 cd6 (13...f5 14.Nc5! Bc5 15.Bg7 cd6+-) 14.Bg7 d5 (14...f5 15.Nc3+-) 15.cd5 ed5 16.Ng3 Qe7 17.Be2 Nf6 18.Bh8 0-0-0 (18...Kd7 19.Bf6 Qf6 20.d4+-) 19.Bf6 Qf6 20.Rc1 d4 (20...Re8 21.d4+-) 21.Ba6 Qe7 (21...Re8 22.Kd1 Kb8 23.Bd3+-) 22.Kd1 d3 (22...Ba6 23.Qa6 Kc7+-) 23.Re1 Qd6 24.Rc6 Qc6 25.Qc6 (25.Qc6 Bc7 26.Qb7 Kd7 27.Bb5 Kd6 28.Qc6) 1–0. marekt (2490) – barryburn29223, ChessWorld.net, 2003.

4.c4 Nf6 5.a3 Nd3 6.ed3 e5 (6...d5 7.Nf3+-) 7.Be5 Qe7 (7...d6 8.Bf6 Qf6 9.Nc3+-) 8.Qe2 d6 (8...Kd8 9.Nf3+-) 9.Bf6 gf6 10.Nf3 (10.Nc3 Be6+-) 10...Bf5 (10...Be6 11.d4+-) 11.Nd4 (better is 11.Nc3+-) 11...Bd3 (11...Be6+-) 12.Qe7 Be7 13.Bd3 0-0-0 (13...d5 14.cd5 Bc5 15.Nf3+-) 14.Nc3 Rde8 15.0-0 f5 16.Bf5 Kb8 (16...Kd8 17.Nb3 Bf6 18.d4+-) 17.Nd5 Bg5 18.a4 (better is 18.f4 Bd8+-) 18...c5 (18...Bd2 19.Rfb1 Ba5+-) 19.bc6 b6 20.a5 ba5 21.Rfb1 Ka8 22.Nc7 1–0. DEFFM – GuestRZMF, freechess.org, 2017.

4.c4 Nf6 5.a3+- d5 6.ab4 (6.e3 dc4 7.ab4 Bb4 8.Bc4 Bd7 9.Nf3 c6 10.bc6) 6...dc4 7.e3 Bb4 8.Bc4 0-0 9.Qf3 Be7 10.Ne2.

4.c4 Nf6 5.a3 Qe7 6.ab4 Qb4 7.Qc2 b6 (7...a6 8.Nf3+-) 8.Ba3 Qa5 9.Bb2 (better is 9.Qb2!? c5+-) 9...Qb4 10.e3 Qd6 (10...Bb7 11.Nc3+-) 11.Nf3 Bb7 12.Be2 Ng4 (12...Qc5 13.Nc3+-) 13.h3 Nh6 (13...Nf6 14.0-0+-) 14.0-0 Be7 (14...a5+-) 15.Bg7 Rg8 16.Qh7 Bg5 (16...Rg7 17.Qg7 Bf8+-) 17.Ng5 (17.Ng5 Rg7 18.Qg7+-) 1–0. DEFFM – Chiccopaz, freechess.org, 2018.

4.e4 Bc5 5.a3 (5.a3 Qh4 6.d4 Qe4 7.Qe2 Nc2 8.Kd1 Qe2 9.Ne2 (9.Be2? Nd4 10.Nc3 Ne2 11.Ke2 Nf6-+) 9...Ba3 10.Kc2=; 5.Bg7 Qh4 6.Qf3 Bd4=) 1–0. Wall,Bill – Stauffer,Ken, San Antonio, 1994.

4.e4 Bc5 5.d4 Be7+-.

4.e4 Bc5 5.Nf3 Nf6 6.d4 Ne4 (6...Be7 7.Nbd2+-) 7.dc5 c6 (7...Qe7 8.Nbd2 (8.Bg7?! Qc5 9.Nd4 Rg8+=) 8...f5 9.Nb3+-) 8.c3 (8.Bg7 Rg8 9.c3 Rg7 10.cb4 cb5+-) 8...Nd5 9.Qc2 (9.Qd4 Ndf6+-) 9...Nef6? (9...Nc5 10.c4 Nf6 11.Bd4+-) 10.Bd3 (10.c4 Nc7+-) 10...Nh5 (10...cb5 11.Bb5 Qa5 12.Na3+-) 11.Nbd2 (11.a4 Nhf4 12.0-0 cb5 13.ab5 Qc7+-) 11...Ndf4 (11...cb5 12.Bb5 a6 13.Bf1+-) 12.0-0-0 (12.0-0!? cb5 13.Ne4 0-0+-) 12...Nd3 (12...cb5 13.Bb5 Ng2 14.Ne4+-) 13.Qd3 Nf4 (13...cb5 14.Ne4 0-0 15.Neg5+-) 14.Qe4 (better is 14.Qd6 Qf6 15.c4+-) 14...Ng2? (14...Qc7 15.Nc4 f5+-) 15.Rhg1 f5 (15...cb5 16.Rg2 Qe7 17.Rg7 Qc5 18.Qe5+-) 16.Qd4 Nh4 (16...cb5 17.Rg2 Rg8 18.Rg7 Rg7 19.Qg7+-) 17.Nh4 Qf6 (17...Rg8 18.Nf5! g5 19.Nd6 Kf8 20.Rg3+-) 18.Rg7 e5 (18...Qd4 19.cd4 Kf8 20.Rdg1 cb5 21.d5+-) 19.Re1 Qg7 20.Re5 Kf7 (20...Kd8 21.Re8! Re8 22.Qg7 cb5+-) 21.Re7! Ke7 Deflection from g7 22.Qg7 Theme: Double Attack 22...Ke6 (22...Ke8 23.Qh8 Kf7 24.Qh7 Ke8 25.Qg8 Ke7 26.Ng6 Kf6 27.f4 d5 28.c4 d4 29.Bd4) 23.c4 d6 (23...d5 24.Qf6 Kd7 25.Qf7 Kd8 26.Bf6) 24.Qf6 Kd7 25.Nf5 (25.Qf7 Kd8 26.Bf6) 25...cb5 26.Qd6 Ke8 27.Qe7 1–0. Roczniak,Jan – Polkowski,M, corr Poland, 1968.

4.e4 c6? 5.a3+- Na6 (5...Nf6 6.ab4 Ne4 7.Bd4+-) 6.ba6 ba6 7.Nf3 Rb8 8.Qc1 Qa5 9.Bc3 Qg5 (9...Qc7+-) 10.Ng5 h6 11.Nf3 c5 12.d4 cd4 13.Bd4 Bb7 14.Qb2 Bd6 15.Ba7 Rc8 16.Qb7 (better is 16.Qg7 Be4 17.Qh8 Ke7 18.Ba6 Ra8+-) 16...Rd8 17.Nc3 (17.e5 Be7 18.Bb6 h5+-) 17...Nf6 18.e5 Ng4 19.ed6 0-0 20.Ba6 Rb8 21.Bb8 Nf6 22.Ne5 g6 23.0-0 g5 24.f4 gf4 25.Rf4 Nh5 26.Rg4 Ng7 (26...Kh7 27.Bd3 f5 28.Qd7 Kh8 29.Nf7 Rf7 30.Qf7 fg4 31.Qf8) 27.Rf1 (27.Ne4 f5 28.Nf6 Rf6 29.Nd7 fg4 30.Nf6 Kh8 31.Qe7 e5 32.Qf8) 27...f5 (27...h5 28.Nd7 hg4 29.Nf6 Kh8 30.Qe7 Rb8 31.d7 Rg8 32.Qf7 Rd8 33.Qg6 Rd7 34.Qh6) 28.Ng6 (28.Qd7 fg4 29.Rf8 Kf8 30.Qf7) 28...Rf6 29.Qc8 Kh7 (29...Ne8 30.Qe8 Kg7 31.Qh8 Kf7 32.Ne5) 30.Nf8 (30.Qh8) 30...Kg8 (30...Kh8 31.Ne6 Ne8 32.Qe8 Rf8 33.Qf8 Kh7 34.Rg7) 31.Nd7 Kf7 (31...Rf8 32.Qf8 Kh7 33.Rg7) 32.Qf8 (32.Ne5) 1–0. kamera – karthikhome, GameColony.com, 2002.

4.e4 c6 5.a3 cb5 6.ab4 Bb4 (6...Nf6 7.e5 Nd5+- 8.Nc3 Bb4 9.Nd5 ed5 10.Qg4 Bf8 11.Nf3 Qb6 12.Nd4 b4; 6...Qb6 A) 7.Na3 Nf6 8.e5 Ne4 9.Qf3 d5 10.ed6 Nd6 11.Qh5 Bd7 12.Nf3 g6; B) 7.Nf3 Nf6 8.e5 Nd5 9.Bd4 Qc6 10.Na3 a6 11.Nb5 Nb4 12.Nc3 b5; C) 7.Nh3 h5 (7...a6 8.Qf3 Ne7 9.Be2 Ng6 10.Bc3 f6 11.Na3 Rb8 12.Nf4 Nf4; 7...Nf6 8.e5 Nd5 9.Nc3 Nb4 10.Bb5 Qd4 11.0-0 Qe5 12.Re1 Qf5) 8.Na3 Nf6 9.e5 Ng4 10.f3 Nh6 11.Nb5 Nf5 12.Bc3 Be7; D) 7.Qe2 Nf6 (7...a6 8.Nc3 Rb8 9.Nf3 h5 10.Ba3 Ne7 11.Rb1 Nc6 12.Qd3 Be7) 8.Nc3 a6 9.e5 Nd5 10.Nd5 ed5 11.Nh3 Qg6 12.Bc3 Qc2; E) 7.Qh5 Nf6 (7...a6 8.Nf3 Nf6 9.Bf6 gf6 10.Nc3 Bb4 11.Nb5 Bc5 12.d4 Be7) 8.Qb5 Qb5 9.Bb5 Bb4 10.e5 Nd5 11.Ne2 b6 12.Nbc3 Bb7; F) 7.Nc3 Bb4 8.Qg4 Be7 9.e5 g6 10.Nf3 Nh6 11.Qf4 Nf5 12.Bb5 a6) 7.Bg7 Ne7 (7...Nf6 8.Bh8 Ne4 (8...d5 9.ed5 Nd5 10.Nc3 Bd7 11.Nd5 ed5 12.Qh5 Qe7) 9.Qg4+- d5 10.f3 Kd7 11.Bb2 f5 12.Qg7 Kc6) 8.Bh8 Ng6 9.Bd4 (9.Bb2 Qb6 10.Nc3 Bc5 11.Qf3 Bd4 12.Nge2 Bc5) 9...e5 (9...Qh4 10.Qf3 f5 11.Nc3 Bc3 12.Bc3 fe4) 10.Be3 d5 11.Qf3 Qc7 (11...d4 12.Bb5 Bd7 13.Bd7 Qd7 14.Bg5+-) 12.Bb5 Bd7 (12...Kf8+- 9.82) 13.Bd7 Qd7 14.ed5 Qc7 15.Qe4 0-0-0 (15...Bc5+-) 16.Qb4 Qc2 17.Ra7 Qc1 18.Ke2 Rd5 19.Qb7 Kd8 20.Ra8 Qc8 21.Rc8 1–0. usingprogram – tomukas225, internet, 2011.

4.e4+- c6? 5.a3+- Nf6 6.ab4 Ne4 7.Bd4+-.

4.e4 Be7? 5.a3 (5.Bg7 Bf6 6.Bh8 Bh8+-) 5...Nc2 6.Qc2 d5? (6...Nf6+-) 7.Bg7 Bf6 8.Bh8 Bh8 9.Nc3 (9.Ra2 de4 10.Qe4 Nf6+-) 9...de4 (9...d4 10.Nd1 d3 11.Qc1 Ba1 12.Qa1+-) 10.Rc1 a6 (10...f5 11.d3+-) 11.Ne4 (11.ba6 f5 12.Nb5 c6+-) 11...ab5 (11...f5 12.Ng3 ab5 13.Qc7 Qc7 14.Rc7+-) 12.Bb5 (better is 12.Qc7 Qc7 13.Rc7 Nh6 14.Nd6 Kd8 15.Rc8 Rc8 16.Nc8 Kc8 17.Bb5 Nf5+-) 12...Bd7 (12...c6 13.Qc5 Qd5 14.Nd6 Kd7 15.Nc8 Qc5 16.Rc5 Kc8 17.Bd3+-) 13.a4 (better is 13.Qc7 Nf6 14.Nd6 Ke7+-) 13...Rc8 (13...f5 14.Nc5 Bb5 15.ab5 Qd5+-) 14.Nd6! cd6 15.Qc8 Bb2 (15...Bb5 16.ab5 b6+-) 16.Bd7 Kf8 17.Qd8 Kg7 18.Rc8 (18.Qg5 Kh8 19.Rc8 Bg7 20.Qd8 Bf8 21.Qf8 h6 22.Qg8) 18...Bf6 19.Qg8 Kh6 20.Be6! fe6 (20...fe6 21.Rc7 Mate attack) 21.Qe6 (21.Rc7 Be7 22.Re7 Kh5 23.Rh7) 21...Kg7 (21...Kh5 22.Qf6 b6 23.Nf3 d5 24.Qg5) 22.Rg8 Kh6 23.Qf6 Kh5 24.g4 1–0. mtr – tomppa, internet, 2001.

4.e4 Nf6 5.a3 Ne4 6.ab4 Bb4 (6...d5 7.Nf3+-) 7.Qg4 Nf2 (7...f5 8.Qg7 Rf8 9.Qh7 Qe7 10.Qe7 Be7+-) 8.Kf2 Bc5 9.Ke2 Rg8 10.Qh5 h6 (10...g5+-) 11.Qc5 b6 (11...d6 12.Qe3+-) 12.Qc4 Bb7 13.Nf3 Bd5 14.Qd3 f6 (14...Qe7 15.Nc3 Bf3 16.Kf3 Qf6 17.Kg3 Qe5 18.Kf2 Qf4 19.Kg1+-) 15.Nc3 Bb7 16.Qg6 Kf8 17.Kf2 Qe7 18.Ba3 d6 19.Bc4 c5 20.bc6! Bc6 21.Nd4 Bb7 22.Ne6 (22.Ne6 Qe6 23.Bd6 Qe7 24.Qf7) 1–0. marekt – 2pieR, ChessWorld.net, 2016.

4.e4 Qh4 5.Nc3 Bc5 6.Nh3+-.

4.e4 Qh4 5.d3 a6 6.Nf3 Qf4 (6...Qh5 7.c3 Qb5 8.cb4 Bb4 9.Nbd2+-) 7.a3 Nc2? (better is 7...ab5 8.ab4 Ra1 9.Ba1 Bb4 10.Nbd2 Nf6+-) 8.Qc2 b6 (8...f6 9.ba6 b6 10.Bc1+-) 9.Be5 Qh6 10.Qc7 Bc5 (10...ab5 11.Bb2+-) 11.Nc3 Ba3 (11...ab5 12.Nb5 Ba6+-) 12.Bf4 g5 (12...Qf4 13.Qf4 Bb2+-) 13.Bg5 Qf8 (13...Qg5 14.Ng5 Be7+-) 14.Qd8 1–0. wiking – cass, internet, 2009.

4.e4 Qh4 5.d3 Bc5 6.Nh3 (6.g3 Qh6 7.a3 Nd5 8.ed5 ed5 9.Qe2 Kd8+-) 6...Nf6 7.g3 Qg5?? (7...Qh6 8.a3+-) 8.a3 (better is 8.Ng5 Ng4 9.d4 Be7+-) 8...Ng4?? (8...Qg6 9.Nd2 Nbd5 10.ed5 Nd5+-) 9.ab4 (better is 9.Ng5 Nf2 10.Qd2 Nbd3 11.cd3 Nh1+-) 9...Bb4 10.c3 Bc5 (10...Nf2 11.Kf2 Qf6 12.Kg2 Be7+-) 11.Ng5 (11.Ng5 Nf2 12.Qh5 Nh1 13.Qf7 Kd8 14.Qh5 Bf2 15.Kd1+-) 1–0. GuestDGHQ – GuestVCWF, freechess.org, 2017.

4.e4 Qh4 5.d3 d5 6.a3+-.

4.e4+- Qh4 5.d3 Qg5+-.

5.c4 Nf4 6.e3 Ng6 7.Nf3 h6 8.Bd3 N6e7 9.0-0 c6 10.Nc3 c5 11.Qa4 b6 12.Ne5 Bb7 13.Be4 d5 14.Bf3 Ng6 (14...Qc7 15.Nb1+/–) 15.Nc6 (15.Ng6 fg6 16.d4 Nf6+-) 15...Bc6 16.bc6 Qc7? (better is 16...Ne5 17.cd5 Nf3 18.gf3 a6 19.de6 fe6+/–) 17.cd5 e5 (17...Ne5 18.Bh5 a6 19.de6 Kd8+-) 18.Nb5 Qc8 (18...Rc8 19.Nc7 Rc7 20.Bh5+-) 19.d6 Nf6 20.c7 e4 21.Bf6 a6 22.Na7 Qd7 23.Qe4 Qe6 (23...Ne7 24.Qa8 Nc8 25.Nc8 gf6 26.Nb6 Qc8 27.Qc8) 24.Qa8 Kd7 25.Qc8 (25.Qc6) 25...Kd6 26.Qb8 Qf6 27.c8Q Ke7 28.Qcc7 (28.Qbc7) 28...Ke6 29.Qbc8 1–0. DEFFM – RealSteel, freechess.org, 2017.

5.e3 Ndf6 6.Nf3 Bc5 7.Be2 b6 8.0-0 Bb7 9.d4 Bd6 10.c4 Ne4 11.Nbd2 Qf6 12.Qc2 Ng5 13.Ne5 Be5 14.de5 Qh6 15.Nf3 Ne7 16.Ng5+= Qg5 17.Qd1?? Qg2# 0–1. OPA – Gramps, caissa.com, 2004.

5.e4 Nb6 6.a4 a5 7.Nf3 (7.ba6!? Qh4 8.Bd3+/–) 7...Nf6+= 8.c4 (better is 8.e5!? Nfd5 9.Be2+=) 8...Ne4-/+ 9.Bd3 Ng5 (9...d5 10.cd5 Qd5 11.Qc2-/+) 10.0-0+= Bc5 (10...d5 11.cd5 Nd5 12.Re1+=) 11.Be2 (11.Ne1 d5 12.cd5 ed5 13.Bg7 Rg8+=) 11...c6 (11...0-0 12.Qc2-/+) 12.d4 (12.Ng5 Qg5 13.d4 Bb4+=) 12...Bb4 (12...Nf3 13.Bf3 Bb4 14.c5+=) 13.Ng5 Qg5 14.f4 Qh6 (14...Qf6 15.Qc2+=) 15.Nc3= g5 (15...d6 16.Na2 0-0 17.Bd3=) 16.fg5 (16.c5 Bc3 17.Bc3 Nd5 18.fg5 Qg5+=) 16...Qg5= 17.Ne4 (17.Bc1 Qg7 18.Ne4+=) 17...Qh6 (17...Qe3 18.Nf2 cb5 19.ab5 d5=) 18.Bh5?? (18.d5 Rf8 19.Nf6 Ke7 20.dc6 dc6 21.Nh7 Bc5 22.Kh1+-) 18...d5?? (better is 18...Qe3 19.Nf2 Nc4-/+) 19.Bc1 (better is 19.Rf7!? de4 20.d5 Bc5 21.Kh1 ed5 22.Bh8 Qe6+-) 19...Qg7 20.Bf7?? (better is 20.Rf7 Qf7 21.Bf7 Kd8 22.c5 de4 23.Qg4+-) 20...Kd8+= 21.Bg5 Kc7?? (better is 21...Be7 22.Be7 Ke7 23.cd5 cd5+=) 22.Bf6+- Qf7 (22...Qf8 23.Be5 Kd8+-) 23.Be5 (23.Bh8?! Qg6 24.c5 de4 25.Be5 Kd8 26.Rf8 Ke7+-) 23...Kd8 24.Rf7 (24.Bh8?! Qg6 25.c5 Qe4 26.Bf6 Ke8 27.cb6 cb5 28.Qh5 Qg6+-) 24...Rg8 25.Bc7 Ke8 26.Qh5 Be7 (26...Rg2 27.Kg2 Be7 28.Nf6 Bf6 29.Rf6 Kd7 30.Qf7) 27.Rg7 (27.Nd6 Kd7 28.Re7 Ke7 29.Qf7) 27...Kd7 28.Re7! Ke7 (28...Ke7 29.Qh7 Mate attack) 29.Qh7 Ke8 30.Nd6 Kf8 31.Rf1 1–0. Trkn – blazex, itsyourturn.com, 2000.

5.e4 Nb6 6.a4 d5 7.a5 Nc4 8.Bc4+/– dc4 9.Nf3 Ne7 (9...Nf6 10.Qe2+/–) 10.0-0 (10.Qe2 a6 11.ba6 Ra6+/–) 10...Bd7 11.Qe2 (11.Nc3 a6 12.ba6 Ra6+/–) 11...Bb5 12.Na3 Ba6 13.Nc4 Ng6 14.g3 Bc5 15.d4 0-0?? (better is 15...Bb4+/–) 16.dc5+- 1–0. pierre – popork, internet, 2010.

5.e4 Nb6 6.a4 d5 7.a5 Nd7!? 8.ed5 ed5 9.Qe2 Qe7 10.Qe7 Ne7+=.

5.e4 Nb6 6.a4 d5 7.a5 Nd7 8.ed5 ed5 9.Qe2 Ne7 10.Nf3=.

5.e4 Nb6 6.Nc3 d5+=.

5.e4 Nb6 6.c4 c6?? (better is 6...d5 7.c5 Nd7= (7...Bc5?? 8.Bg7 Nf6 9.Bh8+-)) 7.c5!+- Nc4 (7...Bc5 8.Bg7) 8.Bc4 cb5 9.Bb5 a6 10.Ba4 b5 (10...Qg5 11.Nf3 Qc5 12.Nc3+-) 11.cb6 Rb8 (11...Nf6 12.Qf3+-) 12.Qc2 (12.Bd4!? Nf6 13.d3 Be7+-) 12...Rb6 13.Nc3 (13.Nf3 Nf6+-) 13...Nf6 14.e5 (14.Nf3 Be7+-) 14...Ng4 (14...Bb7 15.f3 Nd5 16.Ne4+-) 15.Nf3 Bb7 16.Nd4 (better is 16.Nd1 f6 17.Qd3+-) 16...Bg2+/– 17.Rg1 Bh3?? (better is 17...Ne5 18.Rg2 Rb2+/–) 18.Rg3+- Bc5 (18...Qb8 19.Nb3 Ne5 20.Rh3 Nc4+-) 19.0-0-0 (better is 19.Ne4 Bf8 20.Nb3 Nf2 21.Nf2+-) 19...Nf2 (better is 19...Bd4 20.Rd3 Ne5 (20...Be5 21.Rd7 Nf2 22.Re1=; 20...Bf2? 21.Ne4+-) 21.Rd4 0-0=) 20.Bd7?? (better is 20.Ne4 Rb2 21.Qb2 Ne4 22.Rh3+/–) 20...Qd7-+ (20...Kd7 21.Na4 Bf8 22.Nb6 Qb6 23.Rdg1+-) 21.Nb3 (21.Nce2 Nd1 22.Qc5 Rb2 23.Kd1-+) 21...Nd1 (better is 21...Bf8-+) 22.Qd1 (22.Nc5 Qc7 23.Qa4 Ke7 24.Qh4 Ke8 25.Kd1 Qc5+=) 22...Bf2 (better is 22...Be7 23.Rh3 0-0-/+) 23.Na4?? (better is 23.Rh3 Qc7 24.Qc2=) 23...Rc6 (better is 23...Bg3 24.Nb6 Qc6 25.Qc2 Qh1 26.Qd1 Qh2 27.Nc5 Be5 28.Be5 Qe5 29.Qa4 Ke7 30.Qb4-+) 24.Bc3 (24.Rc3 Qd5 25.Nac5 Bc5 26.Nc5 Rc5 27.Qa4 Ke7 28.Qh4 Kd7 29.Qh3-+) 24...Bg3 25.Nac5 Bh2 (better is 25...Qd5 26.hg3 Rc5 27.Nc5 Qc5 28.Qa4 Qb5 29.Qb5 ab5-+) 26.Nd7+= Kd7 27.Qf3 (27.Kb2 Bf5 28.Qh5=) 27...Rd6?? (better is 27...Be5 28.Na5 Rc7 29.Qh3 Ke7-/+) 28.Qf7 Kc6 (28...Kc8 29.ed6 Bd6 30.Qf3 Ba3 31.Kd1+-) 29.ed6 Bd6 (29...Rc8 30.d7 Rd8 31.Nd4 Kd6 32.Qf3 Kd7 33.Qh3+-) 30.Nd4 Kd5 31.Qb7 Ke5+- 32.Nb5 Kf5 33.Nd6 Kf4 34.Qf7 Kg5 35.Qg7 Kf4 36.Be5 Kf3 (36...Kf3 37.Qg3 Ke2 38.Qe3 Kf1 39.Qh3 Ke1 40.Bg3 Ke2 41.Qg2 Kd3 42.Qe4). kamera – karthikhome, GameColony.com, 2002.

5.e4 Nb6 6.Nf3=.

5.e4 Nf4 6.Nf3 Nf6 (6...d5 7.e5=) 7.e5 (7.Bc1 Ng6 8.e5 Nh5+=) 7...Ne4 (7...N6d5 8.c4 Nb6 9.d4=) 8.g3 White fights for the Initiative 8...Nd5 (8...Ng6 9.d3 Nc5 10.d4+=) 9.c4 Nb6 10.Qc2 (better is 10.d3 Nc5 11.d4+=) 10...Nc5? (better is 10...Ng5 11.Nh4 f6+=) 11.d4+- Nca4 (11...Nba4 12.Bc1+-) 12.c5 Nb2 13.cb6 (13.Qb2?! Nd5+=) 13...cb6 (13...ab6 14.Qb2 d5 15.Qc2+-) 14.Qb2 Be7 15.Bd3 Qc7 (15...d6 16.Qc2+-) 16.0-0 (16.Nbd2 d6+-) 16...d6 17.Rc1 Qd7 18.Nbd2 d5 (18...de5 19.Ne5 Qd8 20.Rc4+-) 19.Nb3 (19.Rc3 Qd8+-) 19...a5 (19...f6 20.Qc2+-) 20.Qc2 a4 (20...f5 21.a4+-) 21.Nbd2 0-0 (21...Qd8 22.Qd1+- (22.Bh7?! g6+-)) 22.Bh7 Kh8 23.Bd3 f5 24.Nf1 (24.Qc7 Qc7 25.Rc7 Re8+-) 24...g5 (24...Qd8 25.Qc7+-) 25.Kg2 (25.Qd2 f4 26.g4 Kg7+-) 25...g4 26.N3d2 Qe8 (26...f4 27.f3+-) 27.Qc7 Bg5 (27...Bd8 28.Qd6+-) 28.Qb6 Qh5 (28...Bd8 29.Qc5+-) 29.Kg1 (29.Rc3 f4 30.Rc7 Kg8+-) 29...f4 (29...Re8 30.Ne3+-) 30.Rc7 fg3 (30...Qe8 31.Rac1 Be7 32.R1c3+-) 31.Ng3 (31.hg3 Kg8 32.Rh7 Qe8+-) 31...Qh3 (31...Qe8 32.Rh7 Kg8 33.Rd1+-) 32.Qc5 Kg8 (32...Rd8 33.Rh7 Qh7 34.Bh7 Kh7 35.Ndf1+-) 33.Bh7 (33.Bh7 Qh7 34.Rh7 Kh7 35.Qf8+-) 1–0. Wall,Bill – Genis, internet, 2005.

5.e4 Nf4 6.g3 Ng6 7.Nf3 h6 (7...d5 8.e5=) 8.Bd4 (8.Bg2 a6+=) 8...b6 (8...d6 9.Bc4=) 9.Nc3 Bb7 10.e5 (10.h4 N6e7+=) 10...N8e7 (10...Bc5 11.Bc5 bc5 12.Qe2=) 11.Bd3= Nd5 (11...Nf5 12.Bf5 ef5 13.h4=) 12.Ne4 (better is 12.Nd5 Bd5 13.c4=) 12...Be7?? (better is 12...Nde7=) 13.c4+- Ngf4 14.gf4 Nf4 15.Bc2 h5 (15...Nh3 16.Be3+-) 16.Rg1 g6 (16...f5 17.ef6 gf6 18.Be3+-) 17.Be3 Nh3 18.Rg3 Ng5 (18...g5 19.Rh3 g4+-) 19.Bg5 Bg5 20.Nfg5 h4 21.Rg4 Qe7 22.Nf6 (22.Qf3!? Rb8+-) 22...Kd8 23.Rd4 d6 24.Nfe4 Be4 25.Ne4 g5 (25...Rh5 26.ed6 Qf8 27.Ng5+-) 26.Qf3 Kd7 (26...g4 27.Qg4 Kc8 28.ed6 cd6 29.Nd6 Kb8+-) 27.Nd6! cd6 (27...cd6 28.Qc6 Double attack) 28.Qc6 Kd8 29.Qa8 Kd7 30.Qh8 (30.Qh8 d5 31.cd5+-) 1–0. mrkt – krak, internet, 2009.

5.e4 Nf4 6.g3 Nh5?? 7.Qh5+- Nf6 (7...d5 8.e5 a6 9.Nf3 ab5 10.Bb5 c6 11.Be2 b5; 7...d6 8.Qf3 (8.Nf3 Nf6 9.Bf6 Qf6 10.d4 Bd7 11.Nbd2 Qe7) 8...d5 (8...Ne7 9.Nh3 Ng6 10.d4 e5 11.Nd2 Be6) 9.ed5 ed5 10.Bg2 Ne7 11.Ne2 c6) 8.Qf3 Bc5 (8...Be7 9.e5 Nd5 10.Bg2+- (10.Ne2 a6 11.Nec3 ab5) 10...a6 11.ba6 ba6) 9.Nc3 (9.Bf6 gf6 10.Ne2 d6+- 11.Nf4 Rg8) 9...c6 (9...d5 10.Bg2+- c6 11.Nge2 Qb6) 10.e5 Nd5 11.Nh3 (11.Ne4 Be7+-) 11...Nc3 (11...0-0+-) 12.Bc3 (12.dc3?! cb5 13.Bd3 Qc7+-) 12...0-0 13.Bd3 cb5 (13...Qb6 14.bc6 dc6+-) 14.Bh7! Kh7 15.Qh5 Kg8 16.Ng5 f6 (16...Qg5 17.Qg5 Bb6+-) 17.Qh7 1–0. pereira – txfck, internet, 2009.

5.e4 Ndf6 6.e5 Nd5 7.d4 d6 8.c4 Nb6 9.Nf3 Na4?? 10.Qa4+- Bd7 11.Bd3 a6 12.Qb3 Ne7 13.Nc3 ab5 14.cb5 c6 15.0-0 d5 16.a4 Ng6 17.Bg6 hg6 18.b6 Ra6 19.a5 g5 20.Ne2 g4 21.Nd2 Qh4 22.Qg3 f5 23.Qh4 Rh4 24.g3 Rh8 25.Nf4 Bb4 26.Nb3 Be7 27.Ng6 Rh6 28.Ne7 Ke7 29.Nc5 Ra8 30.Kg2 Rah8 31.Rh1 Be8 32.Nb7 g5 33.a6 Bd7 34.Nc5 Bc8 35.a7 f4 36.a8Q fg3 37.Ra7 (37.Ra7 Kd8 38.Rd7 Ke8 39.Qc8) 1–0. akadawn – madidog, ChessWorld.net, 2005.

5.e4 Ndf6 6.e5!? Ne4 7.d3+=.

5.e4 Ndf6 6.Nf3 Ne4+= 7.Be2 (7.d3 A) 7...Nef6 8.Be2 (8.Nbd2 d5 9.Be2 Bd6 10.0-0 Nh6 11.c4) 8...d5 9.0-0 Bd6 10.c4 a6 11.ba6; B) 7...Ng5 8.Nfd2 (8.Be2 Nf3 9.Bf3 d5 10.c4 Nf6 11.0-0) 8...f6 9.d4 a6 10.Bd3 ab5 11.Bb5; C) 7...Nc5 8.d4 (8.Be2 Nf6 9.0-0 d5 10.d4 Nce4 11.Ne5) 8...Ne4 9.Bd3 d5 10.0-0 Ngf6 11.Ne5; D) 7...Nd6 8.Nc3 (8.c4 a6 9.a4 Nf6 10.Nbd2 Be7 11.d4) 8...Nf6 9.Be2 Be7 10.0-0 0-0 11.Re1) 7...Ngf6 (7...d5 8.0-0 (8.Nc3 Nc5 9.d4 Nd7 10.Bd3 Ngf6 11.0-0) 8...Ngf6 9.Ne5 Bd6 10.f3 Nc5 11.d4; 7...a6 8.ba6 (8.a4 Ngf6 9.0-0 d5 10.Ne5 Bd7 11.d3; 8.0-0 ab5 9.Bb5 Ngf6 10.Bd4 Be7 11.Re1; 8.d3 Nef6 9.ba6 Ra6 10.0-0 d5 11.Be5; 8.Nc3 Nc3 9.Bc3 ab5 10.Bb5 Nf6 11.a4) 8...ba6 9.Nc3 Rb8 10.Rb1 Nc3 11.Bc3; 7...Ng5 8.c4 (8.0-0 Nf3 9.Bf3 d5 10.Nc3 Nf6 11.Re1; 8.Ng5 Qg5 9.0-0 Nf6 10.f4 Qh6 11.Qe1; 8.Ne5 d6 9.Nd3 Nf6 10.0-0 Be7 11.a4; 8.Nc3 d5 9.0-0 d4 10.Na2 Nf3 11.Bf3) 8...d5 9.cd5 Qd5 10.Nc3 Nf3 11.Bf3) 8.0-0 (8.d3 Nd6 9.c4 a6 10.ba6 b6 11.Nc3; 8.Nc3 Nc3 9.Bc3 a6 10.a4 d5 11.0-0; 8.c4 d5 9.0-0 dc4 10.Bc4 Be7 11.Nc3) 8...b6 (8...d5 9.Ne5 Bd6 10.d4 Nd7 11.f3) 9.d3 (9.c4 a6+= 10.d3 Nd6 11.Nd4; 9.Ne5 a6 10.d3 Nd6 11.Bf3) 9...Nd6 10.Ne5 (10.Nc3 a6 11.a4 Bb7+=; 10.Nd4 Bb7 11.Bf3) 10...Bb7 (10...Nb5 11.Bf3-/+ (11.Nd2-/+)) 11.Bf3 (11.c4+=) 11...Qe7 (11...Bf3!? 12.Qf3 a6-/+) 12.Bb7= Nb7 13.Qf3 0-0-0 14.Nc3 d6?? (better is 14...Kb8=) 15.Nc6+- Qd7 16.Na7 Kb8 17.Nc6 Ka8 (17...Kc8 18.Nd8 Qd8 19.Ne2+-) 18.Ne4 Ne4 19.Qe4 Rc8 (19...Re8 20.Qa4 Na5 21.Na5 ba5 22.Qa5 Kb8 23.Rfb1+-) 20.Qa4 Na5 21.Na5 ba5 (21...Qb5 22.Qb5 Ka7 23.Qc6 Ka6 24.Qb7 Ka5 25.a4 Kb4 26.Qc6 Ka5 27.Qb5) 22.Qa5 Kb7 23.Qa6 Kb8 24.Bd4 c5 25.bc6! Qc7 (25...Rc6 26.Rab1; 25...Qc6 26.Qa7) 26.Rab1 Qb7 (26...Qb6 27.Qb6 Ka8 28.Qb7) 27.Qb7 (27.Rb7) 1–0. pereira – jula, internet, 2009.

5.a3 Nc2 6.Qc2 d4? 7.Nf3 b6 (7...f6 8.Bd4 Nh6 9.Bc4+-) 8.Nd4 Bb7 (8...Ne7 9.Nf3+-) 9.Nc6 Qg5 (9...Qd6 10.Be5 Qd7 11.Be2+-) 10.Be5 Bd6 11.f4 (11.d4 Be5 12.Ne5 Qd8+-) 11...Qh4 (11...Qg4 12.g3+-) 12.g3 Qh6 13.Be2 (13.d4 Be5 14.Ne5 Ne7+-) 13...Ne7 14.Bd6 (14.Ne7!? Be7 15.d3 Bd8+-) 14...cd6 15.Ne7 Ke7 (15...Qf6 16.Nc3 Qe7+-) 16.Qc7 Kf6 17.e5 de5 (17...Kg6 18.Qb7 de5+-) 18.fe5 Kg6 19.Bd3 Kg5 20.h4 Kg4 21.Qb7 (21.Qb7 Qf6 22.Qe4 Kh5 23.g4 Kh6 24.Qe3 g5 25.ef6 a6 26.hg5) 1–0. Pietrzak,Wojciech – Pietrzak,Bogdan, Mielec Poland, 2000.

5.a3 Nc2 6.Qc2 de4 7.Nc3+-.

5.a3 Nc2 6.Qc2 Qh4 7.ed5 ed5 (7...Qe7 8.de6 Be6 9.Be2+-) 8.Nf3 (8.Qc7 Qe4 9.Ne2 Nh6+-) 8...Qe7 (8...Qf4 9.Bd3 Bh3 10.Be5+-) 9.Be2 Bg4 10.Nd4 (10.0-0!? Nf6+-) 10...Be2 11.Ne2 Nh6 12.Bd4 Ng4 (12...a6 13.Nbc3 Qd7 14.Qb3+-) 13.Nbc3 Ne5 (13...Qe6+-) 14.Nd5 Qd6 (14...Nd3 15.Qd3 Qd7 16.Qe4 Kd8 17.Rc1+-) 15.Nc7 Kd7 (15...Kd8 16.Na8 Qb8 17.Be5 Qe5 18.Rc1+-) 16.Na8 Be7 17.Be5 (better is 17.Qe4 Nd3 18.Qd3 Ra8 19.Qh7 Bf6 20.Qf5 Ke8 21.Bf6 gf6+-) 17...Qe5 18.Qd3 (better is 18.d4 Qb8 19.Qf5 Kd8 20.Qf7 Rf8 21.Qd5 Ke8+-) 18...Bd6 19.Qh3 f5 20.f4 (better is 20.d4 Qb5 21.0-0 Ra8 22.Rab1+-) 20...Qa1+/– 21.Kf2 Qh1? (better is 21...Bc5 22.Kf3 Qa3 23.Nc3 g6+-) 22.Qf5 Ke7 23.Qe4 Kd7 (23...Kf8 24.Qb7 Qd1 25.Qc8 Kf7 26.Qh8 Bc5 27.d4 Bd4 28.Nd4 Qd4 29.Ke2 Qe4 30.Kd2 Qd4 31.Kc2 Qc4 32.Kb2 Qb5 33.Kc3 Qc5 34.Kd3 Qa3 35.Ke4 Qb4 36.Kd5 Qd2 37.Kc6 Qg2 38.Kd7 Qd5 39.Kc7+/–) 24.Qb7 Ke6 (24...Ke8 25.Qc8 Kf7 26.Qh8 Qh2 27.Qd8 Bf4 28.Qd7 Kg6 29.Qe6 Kg5 30.Qf7 Qh4 31.Kf1 Qh1 32.Ng1+-) 25.Qe4 (25.Nd4 Kf6 26.Qd7 (26.Qa7?! Qh2 27.Nb6 Qf4 28.Nf3 Kg6=) 26...Qg2 27.Kg2 g5 28.Qe6 Kg7 29.Nf5 Kf8 30.Nd6 Kg7 31.Qe7 Kg6 32.Qg5) 25...Kd7 26.Qb7 (better is 26.Qf5 Ke8 27.Qc8 Kf7 28.Qh8 Qh2 29.Qd8 Bf4 30.Qd7 Kg6 31.Qe6 Kg5 32.Qf7+-) 26...Ke6 27.Nd4 Kf6 28.Qa7 (28.Qd7 Qg1 29.Kg1 g6 30.Qd6 Kf7 31.Qe6 Kf8 32.Qd7 Kg8 33.Ne6 h6 34.Qg7) 28...Re8?? (28...Qc1 29.Qa5 Re8+=) 29.Nf3+- Re7 (29...Qa1 30.Qd7 Re6+-) 30.Qd4 Kf7 31.Ng5 (31.Qd6 h6 32.Ne5 Kg8 33.Qe7+-) 31...Kf8 (31...Kf8 32.Qd6 Qe1 33.Kf3 h6 34.Ne6 Qe6 35.Qe6 Re6+-). kamera – gadget27, GameColony.com, 2002.

5.a3 de4 6.ab4 Qd4?? 7.Bd4 Bd7 8.c4 (better is 8.Nc3 Ne7+-) 8...Bb4 9.Bg7 Ne7 10.Bh8 0-0-0 11.Bf6. Fournier,Frederic – jjak, rated standard game, 2002.

5.a3 de4 6.ab4 Nf6 7.Ra4+-.

4.c4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 cb5 9.cb5 b6 10.Nf3 Nf6 11.Be2 Be7 12.Nc3 (12.0-0 Bb7+=) 12...0-0 13.0-0 d5 14.d4 Bb7 15.Bd3 g6 (15...Qd6 16.Ne5=) 16.Qa4+= Nfd7 (16...Nbd7 17.Bb2+=) 17.Bb2+/– f5 18.Qa7 Qc7? (better is 18...Bc8+/–) 19.Rc1+- Rc8 20.Na2 Bc6 21.Qc7 (21.Qa4 Qd6 22.bc6 Rc6+-) 21...Rc7 22.bc6 (22.Rc6?! Nc6 23.bc6 Rc6+=) 22...Nf8? (22...Rc6 23.Nc3 g5+-) 23.Bb5 Bd8 24.Ne5 Ra7 25.Nb4 Bc7 26.Nd7 Ra5 (26...h6 27.Nb8 Bb8 28.Ra1+-) 27.Be2 (27.Nb8 Bb8 28.Na6 Bd6+-) 27...Ra4 28.Nd3 (better is 28.Nb8 Bb8 29.Na6 Bd6+-) 28...Ra2 (28...Na6+-) 29.Nb8 Kf7 (29...Bb8 30.c7 Bc7 31.Rc7+-) 30.Nd7 Ke7 31.Bc3 (better is 31.Nf8 Kf8 32.Rc3 Ke8+-) 31...Re2 (31...Nd7 32.Nb4 Re2 33.cd7 Kd7+-) 32.Bb4 Ke8 33.Nf8 Ra2 34.Ne6 Ra7 35.Nc7 Rc7 36.Bd6 (better is 36.Nf4 Rc8+-) 36...Rc8 37.c7 (better is 37.Nb4 Kf7 38.Nd5 b5+-) 37...Kd7 38.Be5 Ke6 39.Nb4 (better is 39.Nf4 Kf7 40.Nd5 b5+-) 39...h6 1–0. GuestRJPV – GuestJTVT, freechess.org, 2017.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 cb5 9.cb5 Qa5 10.Nc3 Bb4 11.Nf3 Bc3?? (better is 11...Nf6+=) 12.Bc3+- (12.dc3?! d5+/–) 12...Qb5 (12...Qc7 13.Bg7 d6+-) 13.Bb5 (13.Bb5 Ne7 14.Ng5+-) 1–0. GuestJHTS – GuestDGKZ, freechess.org, 2017.

4.e3 b6 5.Nf3 Bb7 6.c4 (6.Bc4 a6=) 6...f6 (6...a6 7.Be2=) 7.Be2+= Qe7 (7...a6 8.0-0+=) 8.0-0 h5 (8...a6 9.d4+=) 9.Nh4 (9.Nd4 Qf7+/–) 9...Qf7 10.f4 (better is 10.Bf3 c6 11.Qc2+=) 10...Nh6?? (better is 10...a6+=) 11.Bh5+- g6 (11...Be4 12.Bf7 Nf7 13.Qg4+-) 12.Bg6 Be7 13.Bf7 (13.Rf2 a6+-) 13...Nf7 14.Ng6 (14.Ng6 Rh6 15.Ne7 Ke7 16.Nc3+-) 1–0. GuestJKKR – GuestWKFS, freechess.org, 2017.

4.e3 d5 5.Be2 Nf6 (5...Nd7 6.Nf3 Ngf6 7.0-0 Bd6 8.d4 a6 9.Ba3=; 5...a6 6.a4 Nf6 7.Nf3 Bd6 8.0-0 0-0 9.Na3=; 5...f6 6.Nf3 Bd6 7.c4 a6 8.Qa4 c6 9.bc6+=) 6.Nf3 Bd6 7.0-0 a6 8.Nc3 0-0 9.ba6=.

4.e3 d5 5.Nf3 Nf6 (5...Nd7 6.Be2 Ngf6 7.0-0 Bd6 8.d4 a6 9.Ba3=) 6.Be2 a6 7.Nc3 Bd6 8.Rb1 ab5 9.Nb5+=.

4.e3 Qg5 5.Nf3 Qh5 6.g3 a6 7.c4 ab5 8.cb5 Ra5 9.a4 c6 10.Nc3 cb5 11.Nb5 Bb4 12.Bg7 Qd5 13.Bh8 Rb5 14.ab5 Ne7 15.Bg2 Qb5 16.Ra8 Nec6 17.Nd4 1–0. Abdullaevich (1755) – Xjurkmaster, lichess.org, 2019.

4.e4 c5 5.Nf3 (5.Be2 d5 6.e5 Nd7 7.Nf3 Qc7 8.0-0 d4 9.c3=; 5.d4 d5 6.ed5 ed5 7.dc5 Nf6 8.Bd4 Ne4 9.Nc3+=) 5...a6 (5...d5 6.ed5 (6.e5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1=) 6...ed5 7.Bd3= c4 8.Be2 Qb6 9.a4+=) 6.Nc3 (6.Be2 Nf6 (6...Ne7+= 7.0-0 d5 8.ed5 Nd5 9.Nc3+=) 7.e5 Nh5 8.0-0 d5 9.ed6+=) 6...ab5 (6...d5!?= 7.ba6 ba6 8.ed5 ed5 9.Qe2=) 7.Bb5+/– Qb6 (7...Nc6 8.0-0 Nd4 9.Nd4+/–) 8.0-0 (8.Rb1 Nf6 9.a4+/–) 8...Nc6 9.Qe2 (9.Rb1+/–) 9...Nf6 10.e5 Nd5 11.Ne4 Nd4 (11...Nf4!? 12.Qc4 Be7+/–) 12.Nd4+/– cd4 13.Qc4 Nf4 14.g3 Ng6 15.Bd4 Ra5?? (15...Qa5+-) 16.Qc8 Ke7 17.Qd7 1–0. pierre – LurZa_boY, internet, 2008.

4.e4 d5 5.ed5 ed5 6.Nf3 a6 7.ba6 Na6 8.Bb5 c6 9.Ba6=.

4.e4 Nf6 5.Nc3= d5 (5...Bc5 6.e5 Nd5 7.Ne4 Be7 8.c4 Nf4 9.h4+=; 5...d6 6.Nf3 Be7 7.Be2 d5 8.e5 Nfd7 9.a4+=; 5...a6 6.e5 Nd5 7.Nf3 Nc3 8.Bc3 Ba3 9.ba6=) 6.e5 Nfd7 7.Nf3 c5 8.bc6 Nc6 9.Bb5=.

4.e4 Nf6 5.e5 Nd5 6.Nf3 c6 (6...a6 7.Nc3=) 7.c4 Nf4 8.g3 (8.Qc2 a6+=) 8...Ng6= 9.a4 Bb4 (9...d6 10.ed6 Qd6 11.d4=) 10.Qb3 Qa5 (10...a5 11.Bc3+=) 11.h4 Bc5 (11...0-0 12.h5 Ne7 13.h6+=) 12.Nc3 (12.h5 Nf8 13.h6+/–) 12...d6 (better is 12...0-0!?+=) 13.Ne4+- 0-0 (13...Nd7 14.ed6 0-0+-) 14.ed6 (14.Nd6?! Nd7 15.Ne4 Bb4+/–) 14...f5?? (14...Nd7 15.h5 Nh8+-) 15.Nc5 Qb6 (15...Re8 16.Qe3 e5 17.h5+-) 16.a5 Qc5 (16...Qd8 17.h5 Nh8 18.h6+-) 17.Ba3 Qe5 (17...Qa3 18.Ra3 cb5 19.Qb5+-) 18.Ne5 Ne5 19.Bg2 (19.d7 Ned7 20.Bf8 Nf8+-) 19...Bd7 (19...Rd8 20.a6+-) 20.0-0 (20.0-0 Nf7 21.d4+-; better is 20.d4!? Nc4 21.Qc4 cb5+-) 1–0. pierre – harcer, internet, 2010.

4.e4 Nf6 5.e5 Ne4 6.d3 Nc5 7.Ba3 d6 8.d4 Ncd7 9.Nf3=.

4.e4 Qg5 5.Nf3 Qf4 6.e5 Qb4 7.Ba3 Qa4 8.Bf8 Kf8 9.Nc3 Qb4 10.Be2 Qb2 11.a3 c6 12.Ra2 (12.Ra2 Qa2 13.Na2 cb5 14.Bb5+-) 1–0. AbstractPoetic – Patchanka, internet, 2007.

4.Nf3 A) 4...Nf6 A1) 5.a4 d5 6.e3 Bd6 7.Be2 Qe7 8.Be5 Be5 9.Ne5=; A2) 5.c4 Be7 (5...d5 6.e3 a6 7.cd5 ed5 8.Qa4 Nbd7 9.ba6=; 5...a6 6.e3 d5 7.cd5 ed5 8.Qa4 Bd7 9.Be5=) 6.e4 Ne4 7.Bg7 Rg8 8.Bb2 d5 9.Qc2=; A3) 5.e3 d5 (5...a6 6.Be2 ab5 7.Bb5 c6 8.Be2 d5 9.0-0=; 5...Be7 6.Be2 d5 7.0-0 Nbd7 8.c4 0-0 9.Qc2=; 5...d6 6.Bd3 e5 7.Nc3 Be7 8.0-0 a6 9.a4=) 6.Be2 a6 7.Nc3 Bd6 8.ba6 Na6 9.Nb5=; A4) 5.a3 d5 6.e3 Bd6 7.c4 a6 8.Bf6 Qf6 9.Nc3=; B) 4...d5 5.e3 Nf6 (5...Nd7 6.Be2 Ngf6 7.0-0 Bd6 8.d4 a6 9.Ba3=) 6.Be2 a6 7.ba6 Na6 8.0-0 Bd6 9.Be5=.

5.a4 d5 6.Nf3 Nbd7 7.Be2 Bd6 8.Ba3 Ba3 9.Na3=.

5.Nc3 d5 6.f4 Be7 7.Nf3 0-0 8.Be2 a6 9.a4=.

5.Bd3 d5 6.Nf3 Nbd7 7.c4 Bd6 8.cd5 ed5 9.0-0=.

5.Be2 d5 (5...a6 6.Nf3 d5 7.ba6 Na6 8.Ne5 Nd7 9.Nd7=; 5...Be7 6.Nf3 d5 7.0-0 0-0 8.a4 Nbd7 9.d4=; 5...Bc5 6.Nf3 d5 7.0-0 0-0 8.d4 Be7 9.Ba3=; 5...d6 6.Nf3 a6 7.ba6 Na6 8.0-0 Be7 9.d4=) 6.Nf3 a6 7.Nc3 ab5 8.Bb5 Bd7 9.Be2=.

5.Nf3 a6 6.Be2 ab5 7.Bb5 c6 8.Be2 d5 9.0-0=.

5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 Nf6 5.Nf3 e6).

5.Nf3 d6 6.Be2 Be7 7.0-0 0-0 8.c4 Nbd7 9.Qc2=.

5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.Ne5 Nbd7 9.f4=.

5.f4 a6 (5...d5 6.Nf3 Be7 7.Be2 a6 8.a4 0-0 9.0-0=; 5...Be7 6.Bd3 d5 7.Nf3 Nbd7 8.0-0 0-0 9.Nc3=) 6.Nc3 d5 7.Nf3 Be7 8.Be2 ab5 9.Nb5=.

4.Bd4+- Nh6 5.e3 Ng4 (5...d6+-) 6.Qg4 Be7 (6...e5 7.Qe4 f6 8.c4+-) 7.Qg7 Rg8 (7...Rf8+-) 8.Qg8 Bf8 9.Bg7 Ke7 10.Bf8 Qf8 11.Qf8 (better is 11.Qh7!? d6+-) 11...Kf8 12.Nf3 d5 13.Nc3 Bd7 14.a4 e5 15.Nd5 Re8 16.Nc7 Re7 17.Nd5 Re6 18.Ng5 (18.e4 Kg7+-) 18...Rd6 19.c4 Rf6 20.Nf6 (better is 20.Nh7 Kg7 21.Nhf6 Be6+-) 20...Bf5 21.Nfh7 (better is 21.Ngh7 Kg7+-) 21...Bh7 22.Nh7 Ke8 23.d4 ed4 24.ed4 f6 25.Nf6 Kd8 26.c5 b6 27.cb6 ab6 28.d5 Ke7 29.Ne4 Kd7 30.Be2 Kc7 31.h4 Kd7 32.h5 Ke7 33.h6 Kf7 (33...Ke8 34.h7 Kf8 35.h8Q Kf7 36.Bh5 Ke7 37.Qe8) 34.h7 Kg7 (34...Kg6 35.h8Q Kf5 36.Nd6 Kg6 37.Qh6) 35.h8Q Kg6 (35...Kf7 36.Bh5 Ke7 37.Qe8) 36.Qf6 1–0. Fournier,Frederic (1780) – sdfg14 (1770), Active, 2005.

4.e3 Nf5 5.d4 Bd6 (5...d5 6.Nf3=) 6.d5 (6.e4 Nh4+=) 6...e5 (6...Nf6 7.Nd2 Bb4 8.c3=) 7.e4 (7.Nd2 Nfe7+=) 7...Nh4 8.Nd2 Qe7 9.Ngf3 Ng6 (9...Nf3 10.Qf3 Bb4 11.c3+=) 10.h4 (10.Bd3 Ba3 11.Ba3 Qa3=) 10...Nf6 (10...h5 11.Bd3+=) 11.h5 Ng4?? (better is 11...Nf4+=) 12.hg6+- fg6 13.Nh4 (13.Nb3 Nf6+-) 13...Kf7 (13...Nh6+-) 14.Qg4 (14.Qg4 Re8 15.Nhf3+-) 1–0. DEFFM – GuestYPKT, freechess.org, 2018.

4.e3 Nf5 5.Nf3 b6 6.c4 Bb7 7.Be2 g5?? (7...a6 8.0-0=) 8.h3 (better is 8.Bh8 g4 9.Ne5+-) 8...f6 (8...Bg7!? 9.Bg7 Ng7+=) 9.Ng5!+/– Bg2? (9...fg5 10.Bh5 Double attack (10.Bh8 Pinning; 10.Bh8 Deflection)) 10.Bh5+- Ke7 11.Nf7 (better is 11.Rg1 fg5 12.Bh8 (12.Rg2?! Nf6+-) 12...Bh3 13.d4+-) 11...Qe8?? (11...Bh1 12.Nd8 Rd8+-) 12.Rg1 (better is 12.Nh8 Qc8 13.Rg1+-) 12...Bh3 (12...Ng7 13.Nh8 Qh5 14.Rg2 Qh3+-) 13.Nh8 Qd8 14.Qf3 Ngh6 15.Qh3 1–0. GuestNSDK – GuestTBWT, freechess.org, 2017.

4.e3 Nf5 5.Nf3 d5 6.Bd3=.

4.e3 Nf5 5.Nf3 Nf6=.

4.a4 d5 5.e3 Nf6 6.c4 Ng6 7.Nf3 Bd6 8.Be2 c5 9.0-0 0-0 10.d4 cd4 11.Nd4 Re8 (11...e5 12.Nc2=) 12.cd5 Nd5 13.Nd2 Nf6 (13...e5 14.N4b3=) 14.N2f3 (14.N4f3 Nd5+=) 14...Bb8 (14...e5 15.Nb3=+) 15.Rc1 (15.Nb3 Nd7+=) 15...e5= 16.Nb3 e4 (16...Qe7!?=) 17.Qd8+= Rd8 18.Nfd4 (better 18.Bf6 gf6 19.Rfd1 Rd1 20.Bd1+=) 18...Ng4? (18...Bd6 19.Rfd1+=) 19.h3?? (better 19.Rc8 Bh2 20.Kh1 Rac8 21.Bg4+-) 19...N4e5 (19...Nf6 20.Rfd1+=) 20.Rfd1 Bd6 21.Na5 (21.Nc5 Bc5 22.Rc5 b6+-) 21...Bb4 22.Nab3 (22.Nc4 Be7+=) 22...Bd7 (better 22...Bd6!?=) 23.Nc5+- Bc5 24.Rc5 b6 (24...Rac8 25.Rd5 f6 26.Nb3+-) 25.Rd5 Be8 (25...Rdc8 26.Rd6 f6 27.Kh2+=) 26.Nf5+- Rd5 27.Rd5 f6 28.Rd4 Rc8 29.Bf1 (29.Bd1!?+-) 29...Rc2 (29...Bd7 30.Nd6 Rc2 31.Nc4=) 30.Ba3 (30.Rd8 Kf7 31.Be5 Ne5 32.Ra8+-) 30...Bd7= 31.Nd6 f5 32.Nc4 Be6 33.Ne5 Ne5 34.Rd8 Kf7 35.Rf8 (better 35.Ra8+=) 35...Kg6=+ 36.Re8 Kf7 (better 36...Kf6=+) 37.Re7+- Kf6 38.Ra7 Nd3 (38...Nd7 39.a5 ba5 40.Ra5+-) 39.Be7 Kg6 40.Bf8 Rc1 (40...Bf7!?+-) 41.Rg7+- Kf6 42.Rb7 Bc4 43.Bg7 (better 43.Rb6!? Kf7 44.Ba3+-) 43...Kg6= 44.Kh2 (44.Rb6? Kg7 45.Rb7 Kg6 46.Rb6 Kf7 47.Rb7 Ke6 48.Rh7 Nc5-+) 44...Rf1 45.Bd4 Nf2 46.Rg7 Kh6 47.h4?? (better 47.Kg3 Nd3 48.Rb7 f4 49.Kh4=) 47...Ng4 (47...Rd1 48.Rb7 f4 49.ef4 Rd4 50.Rb6 Kh5 51.Kg3 Nh1 52.Kh2-+) 48.Kg3 The mate threat is Rg5 48...Re1?? (better 48...f4 49.ef4 Rd1-/+) 49.Rg5 Ne3 (49...Re3 50.Kf4 Rf3 51.gf3 Nf6 52.Bf6 Bb5 53.Bg7) 50.Kf4 (50.Bg7) 50...Ng4?? (better 50...Nd5 51.Kg3 Ne3 52.Bg7) 51.Rf5 (51.Bg7) 51...Rf1-/+ 52.Kg4? (better 52.Ke4 Bd3! 53.Kd3 Rf5 54.Bb6-/+) 52...Be6 53.Be3 White prepares h5 53...Kg6 54.h5 Kg7 55.Kg3 (55.Bb6 Rf5 56.Kh4 Bb3-+) 55...Bf5 56.Bd4 (56.Bd4 Kh6 57.Bb6 Kh5 58.a5-+; 56.Bb6 Bd7-+). BeepBeepImAJeep (2725) – FatherGascoigne (2720), lichess.org, 2020.

4.Nc3 a6 A) 5.a4 A1) 5...Nf6 6.e3 (6.e4 d5 7.Bd3 Ng6 8.ba6 ba6 9.Nf3 Rb8 10.Rb1; 6.Nf3 d5 7.e3 Nf5 8.Bd3 Bc5 9.0-0 0-0 10.e4) 6...ab5 7.ab5 Ra1 8.Qa1 Nf5 9.Nf3 d5 10.Bd3; A2) 5...Nd5 6.Nf3 (6.e3 Nc3 7.Bc3 Nf6 8.Nf3 Ne4 9.Bd4 d5 10.Bd3; 6.Nd5 ed5 7.Nf3 Nf6 8.e3 Bc5 9.Bd3 0-0 10.0-0) 6...Ngf6 7.Nd5 ed5 8.e3 Bc5 9.Bd3 0-0 10.0-0; A3) 5...Ng6 6.Nf3 (6.e3 ab5 7.ab5 Ra1 8.Qa1 Nf6 9.Nf3 d5 10.Qa7; 6.g3 Nf6 7.Nf3 Bb4 8.e3 0-0 9.Bd3 b6 10.0-0) 6...ab5 7.ab5 Ra1 8.Qa1 Nf6 9.e3 d5 10.Qa7; A4) 5...d5 6.e4 (6.Nf3 Nf6 7.e3 Nf5 8.Bd3 Bc5 9.0-0 0-0 10.e4; 6.e3 Nf6 7.Nf3 Nf5 8.Bd3 Bc5 9.0-0 0-0 10.e4) 6...Nf6 7.e5 Nd7 8.Nf3 Ng6 9.d4 Bb4 10.Bd3; B) 5.e3 B1) 5...Nf6 6.Nf3 (6.a4 d5 7.Nf3 Nf5 8.Bd3 Bc5 9.0-0 0-0 10.e4; 6.ba6 b6 7.Nf3 Nc6 8.Bb5 Ba6 9.0-0 Be7 10.Ba6) 6...ab5 7.Nb5 Nc6 8.Bd3 Nb4 9.Be2 c6 10.Nbd4; B2) 5...Ng6 6.Nf3 (6.a4 Nf6 7.Nf3 Bc5 8.Bd3 0-0 9.h4 h6 10.h5; 6.Bd3 ab5 7.Nb5 c6 8.Nd4 Nf6 9.Ngf3 Qb6 10.Qb1) 6...Nf6 7.a4 Bc5 8.Bd3 0-0 9.h4 Ne7 10.h5; B3) 5...d5 6.ba6 (6.Nf3 ab5 7.Bb5 c6 8.Bd3 Nf6 9.0-0 Ng6 10.e4) 6...Nf6 7.Bd3 ba6 8.Nf3 Nc6 9.0-0 Bd6 10.Nd4; B4) 5...ab5 6.Nb5 (6.Bb5 Nf6 7.Nge2 Nc6 8.Nf4 d5 9.0-0 Be7 10.a3) 6...Nf6 7.Nf3 Nc6 8.Bd3 Nb4 9.0-0 c6 10.Nbd4; C) 5.ba6 C1) 5...Nf6 6.e4 (6.Nf3 Ra6 7.e3 Ra5 8.Bd3 Nc6 9.0-0 Be7 10.Nb5; 6.e3 b6 7.Nf3 Nc6 8.e4 Ba6 9.Ba6 Ra6 10.a4) 6...ba6 7.Nf3 Ng6 8.Bc4 d5 9.ed5 ed5 10.Bb3; C2) 5...Nc6 6.e4 (6.Nf3 Ra6 7.e3 Ra5 8.Bb5 Nf6 9.0-0 Be7 10.h3) 6...Nf6 7.Nf3 b6 8.h3 Bb4 9.e5 Bc3 10.dc3; C3) 5...b6 6.e4 (6.e3 Nf6 7.Nf3 Nc6 8.e4 Ba6 9.Ba6 Ra6 10.a4) 6...Nf6 7.Nf3 Nc6 8.e5 Ng4 9.d4 Ba6 10.Ba6; C4) 5...Ra6 6.e3 (6.Nf3 Nf6 7.e3 Ra5 8.Bd3 Nc6 9.0-0 Be7 10.Nb5) 6...Ra5 7.Nf3 Nf6 8.Bd3 Nc6 9.0-0 Be7 10.Nb5; D) 5.Nf3 D1) 5...Nf6 6.ba6 (6.e4 ab5 7.Bb5 c6 8.Bd3 Ng6 9.0-0 Qc7 10.Qe1; 6.e3 ab5 7.Nb5 Nc6 8.Bd3 Bc5 9.0-0 d6 10.Ng5) 6...Ra6 7.e3 Ra5 8.Bd3 Nc6 9.0-0 Be7 10.Nb5; D2) 5...Ng6 6.a4 (6.e3 Nf6 7.a4 d5 8.Bd3 Bd6 9.0-0 0-0 10.ba6; 6.ba6 Nf6 7.e4 ba6 8.Rb1 Bb7 9.Bd3 Rb8 10.0-0) 6...Nf6 7.e3 Bc5 8.Bd3 0-0 9.0-0 a5 10.h4; D3) 5...ab5 6.Nb5 Nf6 7.e3 Nc6 8.Bd3 Nb4 9.Be2 Bc5 10.0-0; E) 5.e4 E1) 5...Nf6 6.ba6 (6.Nf3 ab5 7.Bb5 c6 8.Bd3 Ng6 9.0-0 Qc7 10.Qe1; 6.Bd3 ab5 7.Nb5 Nc6 8.Nf3 Bc5 9.Qe2 d6 10.e5) 6...ba6 7.Nf3 Rb8 8.Rb1 Bb7 9.Bd3 Ng6 10.0-0; E2) 5...Ng6 6.Nf3 (6.ba6 Nf6 7.Nf3 ba6 8.e5 Rb8 9.Rb1 Ng4 10.Ne4; 6.a4 Nf6 7.Nf3 Bb4 8.e5 Ng4 9.Na2 Be7 10.h3) 6...ab5 7.Bb5 c6 8.Be2 Nf6 9.0-0 Qa5 10.d3; E3) 5...b6 6.Nh3 (6.Qf3 Ng6 7.h4 h5 8.e5 Ra7 9.Qg3 N8e7 10.Bd3; 6.Nf3 Nf6 7.e5 Nfd5 8.Nd5 Nd5 9.c4 Ne7 10.Bd3) 6...Ng6 7.Qf3 ab5 8.Nb5 c6 9.e5 Ba6 10.Nd6; E4) 5...ab5 6.Bb5 (6.Nb5 Ng6 7.e5 N8e7 8.Nf3 Nc6 9.Be2 Nf4 10.0-0) 6...c6 7.Bd3 Ng6 8.Nf3 Nf6 9.0-0 Qc7 10.Qe1.

4.Nc3 c6 5.Nf3 (5.e4 A) 5...Ng6 6.Nf3 (6.g3 Nf6 7.Nf3 Qa5 8.Bd3 Bd6 9.0-0 0-0 10.Ne2; 6.h4 Nh4 7.Nf3 Nf3 8.Qf3 Qc7 9.g4 Ne7 10.Ba3) 6...Nf6 7.e5 Nd5 8.g3 Be7 9.Nd5 ed5 10.bc6; B) 5...a6 6.ba6 (6.a4 Nf6 7.Nf3 Ng6 8.e5 Ng4 9.d4 ab5 10.ab5; 6.bc6 Nc6 7.Nf3 Nf6 8.Bd3 Bd6 9.Ne2 Qb6 10.Rb1) 6...b5 7.e5 Ba6 8.Nf3 Nh6 9.a4 b4 10.Ne4; C) 5...Qb6 6.Nf3 (6.Rb1 Nf6 7.Nf3 Ng6 8.e5 Ng4 9.d4 c5 10.Nd2; 6.a4 Nf6 7.a5 Qc7 8.Nf3 Ng6 9.Be2 Bb4 10.0-0) 6...Nf6 7.Rb1 Ng4 8.d4 d5 9.Bd3 de4 10.Ne4; D) 5...Nf6 6.Nf3 (6.Bd3 Qb6 7.e5 Nfd5 8.Nf3 Nc3 9.Bc3 Nd5 10.bc6 ; 6.a4 Ng6 7.Nf3 Bb4 8.Bd3 Nf4 9.0-0 0-0 10.Ne2) 6...Ng6 7.e5 Nd5 8.Bc4 Bb4 9.0-0 0-0 10.Rb1; 5.e3 A) 5...Nf6 6.Nf3 (6.Bd3 a6 7.ba6 b5 8.Nf3 b4 9.Ne4 Ne4 10.Be4; 6.Nh3 Ng6 7.Bd3 Bc5 8.0-0 0-0 9.Qe2 d5 10.f4) 6...a6 7.a4 Ned5 8.Nd5 Nd5 9.c4 Nb4 10.bc6; B) 5...Nd5 6.Nf3 (6.Bd3 Ngf6 7.Nf3 Nb4 8.Bc4 Be7 9.a3 Nbd5 10.0-0 ; 6.Nd5 cd5 7.Nf3 Nf6 8.c4 dc4 9.Bc4 d5 10.Bd3) 6...Ngf6 7.Bd3 Nb4 8.0-0 Be7 9.Bc4 0-0 10.a3; C) 5...d5 6.h3 (6.Nf3 Nf6 7.Bd3 c5 8.0-0 Ng6 9.Re1 Be7 10.h3; 6.Bd3 Nf6 7.Nf3 c5 8.a4 c4 9.Be2 Nf5 10.0-0) 6...Nf6 7.Nf3 Nf5 8.Bd3 Bd7 9.0-0 Bb4 10.a3; D) 5...a6 6.a4 (6.ba6 b6 7.Nf3 Nf6 8.Nd4 Ng6 9.Bd3 Ba6 10.Ba6; 6.bc6 Nc6 7.Bd3 Nf6 8.Nge2 d5 9.0-0 Bd6 10.a4) 6...Nf6 7.Nf3 Ned5 8.Nd5 cd5 9.Bd3 Ne4 10.0-0; 5.bc6 A) 5...bc6 6.Nf3 (6.Rb1 Nf6 7.e3 Rb8 8.Bd3 Ng6 9.Nf3 Be7 10.0-0; 6.e3 Nf6 7.Rb1 Rb8 8.Bd3 Ng6 9.Nf3 Be7 10.0-0) 6...Nf6 7.Rb1 Rb8 8.e3 Qa5 9.Bd3 Ng6 10.0-0; B) 5...dc6 6.Nf3 (6.e3 Nf6 7.Nf3 Ng6 8.h3 Bd6 9.Bd3 0-0 10.0-0; 6.e4 Nf6 7.Nf3 Ng6 8.d4 Be7 9.Bd3 0-0 10.0-0) 6...Nf6 7.e3 Ng6 8.Bd3 Bd6 9.0-0 0-0 10.Qe2; C) 5...Nc6 6.Nf3 (6.e3 Nf6 7.Bd3 d5 8.f4 d4 9.ed4 Qd4 10.Nge2; 6.Nh3 Nf6 7.e3 Be7 8.Nf4 d5 9.Bd3 e5 10.Nh5) 6...Nf6 7.e3 d5 8.Nb5 Bc5 9.Bd3 0-0 10.0-0; 5.Rb1 A) 5...Nd5 6.bc6 (6.e4 Nc3 7.Bc3 Nf6 8.bc6 bc6 9.Bd3 d5 10.e5; 6.Nf3 Ngf6 7.e3 Be7 8.Bd3 Nb4 9.0-0 0-0 10.Be2) 6...bc6 7.e4 Nc3 8.Bc3 Nf6 9.Bd3 d5 10.e5; B) 5...d5 6.e4 (6.Nf3 Nf6 7.e3 Nf5 8.Bd3 Bd6 9.e4 de4 10.Ne4; 6.e3 Nf6 7.Nf3 c5 8.Bd3 c4 9.Be2 Nf5 10.0-0) 6...d4 7.Nce2 c5 8.Nf3 Nf6 9.e5 Nfd5 10.Ng3; C) 5...a6 6.bc6 (6.ba6 b5 7.e4 b4 8.Nce2 Ba6 9.Nf3 Ng6 10.d3; 6.a4 ab5 7.ab5 Nf6 8.e4 Ng6 9.Nf3 Bb4 10.e5) 6...Nc6 7.Nf3 d5 8.e4 d4 9.Ne2 e5 10.c3; D) 5...Nf6 6.Nf3 (6.e4 Ng6 7.Nf3 Bb4 8.g3 0-0 9.Bd3 d5 10.bc6; 6.e3 a6 7.bc6 Nc6 8.Bd3 d5 9.f4 Bd6 10.Nf3) 6...a6 7.bc6 Nc6 8.e4 d5 9.ed5 ed5 10.Bd3) 5...a6 (5...Nf6 6.e4 (6.e3 Ned5 7.Nd5 cd5 8.c4 dc4 9.Bc4 d5 10.Bd3) 6...Ng6 7.e5 Nd5 8.Bc4 Bb4 9.0-0 0-0 10.Rb1; 5...Nd5 6.Nd5 (6.e3 Ngf6 7.Nd5 cd5 8.c4 dc4 9.Bc4 d5 10.Bd3; 6.bc6 bc6 7.e4 Rb8 8.Rb1 Nc3 9.Bc3 Rb1 10.Qb1) 6...cd5 7.e3 Nf6 8.c4 dc4 9.Bc4 d5 10.Bd3; 5...Qb6 6.Rb1 (6.e4 Nf6 7.Rb1 Ng6 8.e5 Ng4 9.d4 c5 10.Nd2; 6.e3 Nf6 7.Rb1 Qa5 8.Bd3 Ng6 9.h4 Bd6 10.Ne4) 6...Nf6 7.e3 Nf5 8.Bd3 d5 9.bc6 bc6 10.0-0) 6.ba6 (6.a4 Nf6 7.e4 Ng6 8.e5 Ng4 9.d4 ab5 10.ab5; 6.bc6 Nc6 7.e3 Nf6 8.Bd3 d5 9.0-0 Bd6 10.e4) 6...ba6 (6...b5 7.Ne4 Ng6 8.h4 d5 9.h5 de4 10.hg6) 7.Ne4 (7.Rb1 Nf6 8.e3 Rb8 9.Bd3 Ned5 10.Nd5) 7...Bb7?? (better is 7...d5 8.Ng3 Ng6= (8...Nf6 9.Rb1 Ng6 10.h4) 9.h4 h5 10.Rb1; 7...Ng6 8.Rb1 d5 9.Ng3 Nf6 10.h4) 8.Nd6 1–0. jasio – monica, internet, 2011.

4.Nc3 d5 A) 5.Nf3 A1) 5...Ng6 6.h4 (6.e4 Nf6 7.e5 Ne4 8.Bd3 Ng5 9.Ng5 Qg5 10.0-0; 6.g3 Nf6 7.h4 Bd6 8.h5 Ne5 9.h6 gh6 10.Ne5) 6...h5 7.e3 Bd6 8.Bd3 Nf6 9.Bg6 fg6 10.Qe2; A2) 5...Nf6 6.e3 (6.h3 Ng6 7.e3 Bd6 8.d4 0-0 9.Bd3 Bd7 10.0-0; 6.g3 Nf5 7.e3 Bd6 8.Bd3 0-0 9.0-0 Bd7 10.Re1) 6...Ng6 7.Bd3 Bd6 8.0-0 0-0 9.h3 Bd7 10.Re1; B) 5.g3 B1) 5...a6 6.Nf3 (6.e3 ab5 7.Bb5 c6 8.Be2 Nf6 9.a4 Nf5 10.g4; 6.e4 Nf6 7.e5 Nd7 8.Nf3 ab5 9.Bb5 c6 10.Bd3) 6...Nf6 7.e3 ab5 8.Nb5 c6 9.Nbd4 Nf5 10.Nf5; B2) 5...Ng6 6.e3 (6.Nf3 Nf6 7.h4 Bd6 8.h5 Ne5 9.Ne5 Be5 10.h6; 6.h4 Nf6 7.Nf3 Bd6 8.h5 Ne5 9.h6 gh6 10.Ne5) 6...Nf6 7.h4 Bd6 8.h5 Ne5 9.h6 g5 10.d4; B3) 5...Nf5 6.Nf3 (6.e4 de4 7.Ne4 Be7 8.Nf3 Nf6 9.Bd3 Ne4 10.Be4) 6...Nf6 7.e3 Bb4 8.Bd3 0-0 9.0-0 h6 10.Ne5; B4) 5...Nf6 6.Nf3 (6.e3 Nf5 7.Nf3 Bd6 8.Bd3 0-0 9.0-0 c5 10.bc6; 6.Bg2 Nf5 7.e3 a6 8.Nf3 ab5 9.Nb5 c6 10.Nbd4) 6...Nf5 7.Bh3 Be7 8.0-0 0-0 9.e3 Nd6 10.d3; C) 5.e4 C1) 5...de4 6.Ne4 (6.Nh3 Nf6 7.Ng5 Ned5 8.Nge4 Be7 9.Bd3 0-0 10.Qf3) 6...Nd5 7.Bc4 Qe7 8.Qf3 f5 9.Nc3 Ngf6 10.Nge2; C2) 5...Ng6 6.ed5 (6.Nf3 Nf6 7.e5 Nd7 8.d4 Nb6 9.a4 Bb4 10.a5; 6.Nh3 Nf6 7.Bd3 Bd6 8.f4 Nf4 9.Nf4 Bf4 10.ed5) 6...ed5 7.Nf3 Nf6 8.Bd3 Bd6 9.Qe2 Be6 10.0-0; C3) 5...f5 6.ed5 (6.e5 Nh6 7.Nf3 Ng6 8.g3 c5 9.bc6 bc6 10.Rb1; 6.Qh5 g6 7.Qh4 Bg7 8.ed5 Nd5 9.Qd8 Kd8 10.Nf3) 6...Nd5 7.Nd5 Qd5 8.Qh5 Ke7 9.Qh4 Nf6 10.Nf3; C4) 5...Nf6 6.e5 (6.Bd3 Ng6 7.Nge2 Bd6 8.0-0 0-0 9.h3 Ne5 10.ed5) 6...Nd7 7.Nf3 Ng6 8.d4 Bb4 9.a3 Ba5 10.Bd3; D) 5.e3 D1) 5...Nf6 6.Nf3 (6.Be2 Bd7 7.Nf3 Nf5 8.Ne5 Bd6 9.f4 0-0 10.0-0; 6.Bd3 e5 7.e4 d4 8.Nce2 Ng6 9.Nf3 Bg4 10.Neg1) 6...Ng6 7.Bd3 Bd6 8.h4 Ng4 9.h5 N6e5 10.Ne5; D2) 5...Bd7 6.Bd3 (6.Nf3 Nf6 7.Bd3 Ng6 8.h4 Bd6 9.h5 Ne5 10.Ne5; 6.Ba3 Nf6 7.Nf3 c6 8.Rb1 Nf5 9.Bf8 Kf8 10.Bd3) 6...Ng6 7.f4 Nf6 8.Nf3 Bc5 9.Ne5 0-0 10.0-0; D3) 5...Ng6 6.Nf3 (6.g3 Nf6 7.Nf3 e5 8.Bg2 Bd6 9.0-0 0-0 10.Re1; 6.Bd3 Nf6 7.Nf3 Bd6 8.0-0 0-0 9.Re1 Ng4 10.Be2) 6...Bd6 7.h4 h5 8.Bd3 Nf6 9.Bg6 fg6 10.Qe2; D4) 5...Nf5 6.Nf3 (6.Bd3 Nf6 7.Nf3 Bd6 8.e4 Ne4 9.Ne4 de4 10.Be4; 6.g4 Nd6 7.Nf3 Nf6 8.Rg1 Nfe4 9.g5 Be7 10.h4) 6...Nf6 7.Bd3 Bd6 8.e4 Ne4 9.Ne4 de4 10.Be4.

4.Nc3 Nd5 A) 5.e3 A1) 5...Ngf6 6.Nd5 (6.Nf3 Nc3 7.Bc3 a6 8.Bd4 ab5 9.Bb5 Be7 10.0-0; 6.Nge2 a6 7.Nd5 Nd5 8.c4 Nf6 9.Nf4 b6 10.Bd3) 6...ed5 7.Bd3 Bd6 8.Ne2 0-0 9.0-0 Re8 10.f4; A2) 5...Nc3 6.Bc3 (6.dc3 Qf6 7.Qf3 d5 8.0-0-0 Qf3 9.Nf3 Nf6 10.Bd3) 6...Nf6 7.Nf3 a6 8.a4 Ne4 9.Bb2 d5 10.Bd3; B) 5.Nd5 ed5 6.e3 (6.Nh3 Nf6 7.e3 Bd6 8.Bd3 0-0 9.Qf3 Re8 10.Qf5) 6...Nf6 7.Nh3 Bd6 8.Qf3 b6 9.Bd3 Bb7 10.Rb1; C) 5.Nf3 C1) 5...Nc3 6.Bc3 Nf6 7.e3 a6 8.a4 Ne4 9.Bd4 d5 10.Bd3; C2) 5...c6 6.e3 (6.Nd5 cd5 7.e3 Nf6 8.c4 dc4 9.Bc4 d5 10.Bd3; 6.bc6 bc6 7.e4 Rb8 8.Rb1 Nc3 9.Bc3 Rb1 10.Qb1) 6...Ngf6 7.Bd3 Bc5 8.Nd5 Nd5 9.bc6 dc6 10.0-0; C3) 5...a6 6.Nd5 (6.e3 Nc3 7.Bc3 Nf6 8.a4 Ne4 9.Bd4 d5 10.Bd3; 6.ba6 Nc3 7.Bc3 Nf6 8.e3 b6 9.Be5 Bc5 10.a4) 6...ed5 7.e3 ab5 8.Bb5 Nf6 9.0-0 Bc5 10.Nd4; C4) 5...Ngf6 6.e3 (6.Nd5 ed5 7.e3 Bc5 8.c4 dc4 9.Bc4 d5 10.Bd3) 6...Nc3 7.Bc3 a6 8.a4 Ne4 9.Bd4 d5 10.Bd3.

4.Nc3 Nf6 A) 5.e3 A1) 5...a6 6.Nf3 (6.Nh3 ab5 7.Bb5 c6 8.Bd3 Ng6 9.0-0 d5 10.Nf4; 6.ba6 b6 7.Nf3 Nc6 8.a7 Ra7 9.Nb5 Ra5 10.Bc4) 6...ab5 7.Bb5 Nc6 8.0-0 Be7 9.d4 d5 10.Bc6; A2) 5...Ned5 6.Nd5 (6.Nf3 Nc3 7.Bc3 a6 8.a4 Ne4 9.Bd4 ab5 10.ab5; 6.Nge2 a6 7.Nd5 Nd5 8.c4 Nf6 9.Nf4 d6 10.Nh5) 6...ed5 7.Bd3 Bc5 8.Nh3 d6 9.Nf4 Bg4 10.f3; A3) 5...Ng6 6.Nf3 (6.Bd3 d5 7.Nf3 Bd6 8.0-0 0-0 9.h3 Bd7 10.Re1; 6.h4 h5 7.Bd3 d5 8.Bg6 fg6 9.Nf3 Bd6 10.Qe2) 6...d5 7.h4 h5 8.Be2 Bd6 9.g3 Ng4 10.Nh2; A4) 5...d5 6.Nf3 (6.h3 e5 7.Nf3 e4 8.Ne5 Nf5 9.Rb1 Be7 10.d3; 6.Nge2 Ng6 7.h4 h5 8.Ng3 Bd6 9.Bd3 Bd7 10.Be2) 6...Nf5 7.Bd3 Bb4 8.0-0 0-0 9.Ne5 Qd6 10.a3; B) 5.Nf3 B1) 5...Ng6 6.g3 (6.h4 h5 7.e3 d5 8.Bd3 Bd6 9.Bg6 fg6 10.Qe2; 6.e4 d5 7.e5 Ne4 8.Bd3 Ng5 9.Ng5 Qg5 10.0-0) 6...a6 7.a4 Bc5 8.Bg2 d5 9.d4 Bd6 10.0-0; B2) 5...a6 6.e4 (6.e3 ab5 7.Bb5 Nc6 8.0-0 Be7 9.Qe2 0-0 10.e4; 6.g3 ab5 7.Nb5 Ned5 8.c4 Nb6 9.Qb3 c6 10.Nbd4) 6...ab5 7.Bb5 c6 8.Bd3 Ng6 9.0-0 Qc7 10.a4; B3) 5...b6 6.e3 (6.e4 Bb7 7.Bd3 Ng6 8.0-0 Bd6 9.g3 0-0 10.Qe2; 6.g3 Bb7 7.Bg2 a6 8.0-0 Ned5 9.a4 Bd6 10.Nd5) 6...Bb7 7.Bd3 Ng6 8.0-0 Bd6 9.Ng5 h6 10.Nge4; B4) 5...d5 6.e3 (6.g3 Nf5 7.Bh3 Be7 8.0-0 0-0 9.e3 Nd6 10.d3; 6.h3 Ng6 7.h4 h5 8.e3 Bd6 9.Bd3 0-0 10.Qe2) 6...Ng6 7.Bd3 Bd6 8.0-0 0-0 9.h3 Bd7 10.Re1; C) 5.Nh3 C1) 5...d5 6.e3 (6.e4 Ne4 7.Ne4 de4 8.Qe2 Qd5 9.c4 Qf5 10.g4) 6...e5 7.Be2 Nf5 8.0-0 Bd6 9.Nd5 Nd5 10.e4; C2) 5...Ng6 6.e3 (6.e4 a6 7.ba6 ba6 8.Rb1 Bb7 9.e5 Ne4 10.Ne4 6.Rb1 d5 7.e3 Bd6 8.Ng5 h6 9.Nf3 0-0 10.Be2) 6...d5 7.Bd3 e5 8.f3 Bh3 9.gh3 Qd7 10.Qe2; C3) 5...b6 6.e4 (6.e3 Bb7 7.f3 Nf5 8.Bd3 Bb4 9.Qe2 0-0 10.0-0; 6.f3 a6 7.e3 ab5 8.Nb5 Ba6 9.a4 Ng6 10.Be2) 6...Ng6 7.d4 Bb4 8.Bd3 d5 9.e5 Ne4 10.Be4; C4) 5...a6 6.a4 (6.e3 ab5 7.Bb5 Ng6 8.f4 Be7 9.0-0 0-0 10.Nf2; 6.e4 ab5 7.Bb5 c6 8.Be2 d5 9.Bf3 d4 10.Ne2) 6...ab5 7.ab5 Ra1 8.Qa1 b6 9.Qa7 Nf5 10.e4; D) 5.h3 D1) 5...d5 6.e3 (6.Nf3 Ng6 7.e3 Bd6 8.d4 0-0 9.Bd3 Bd7 10.0-0) 6...Ng6 7.Nf3 Bd6 8.d4 0-0 9.Bd3 Bd7 10.0-0; D2) 5...Ng6 6.Nf3 (6.e3 d5 7.Nf3 Bd6 8.d4 0-0 9.Bd3 Bd7 10.0-0; 6.a4 d5 7.e3 e5 8.Nf3 Be7 9.d4 e4 10.Ne5) 6...d5 7.e3 Bd6 8.d4 Bd7 9.Bd3 0-0 10.0-0; D3) 5...Ned5 6.Nf3 (6.Nd5 ed5 7.e3 Bc5 8.Ne2 0-0 9.Nf4 c6 10.Bd3; 6.e3 Nc3 7.Bc3 Ne4 8.Bd4 Qh4 9.g3 Qh6 10.Bd3) 6...a6 7.e3 ab5 8.Bb5 Bc5 9.0-0 0-0 10.Nd5; D4) 5...a6 6.Nf3 (6.e3 ab5 7.Bb5 Nc6 8.Nf3 Be7 9.0-0 0-0 10.a4; 6.a4 Ned5 7.Nf3 Bc5 8.Nd5 ed5 9.e3 0-0 10.Be2) 6...ab5 7.Nb5 Ng6 8.e3 c6 9.Nbd4 Qb6 10.Nb3; E) 5.e4 E1) 5...a6 6.ba6 (6.Nf3 ab5 7.Bb5 c6 8.Bd3 Ng6 9.0-0 Qc7 10.a4; 6.a4 ab5 7.ab5 Ra1 8.Qa1 d5 9.Bd3 Ng6 10.Nf3) 6...Ng6 7.Nf3 ba6 8.Bc4 Rb8 9.Rb1 Bb7 10.0-0; E2) 5...Ng6 6.Nf3 (6.Bd3 d5 7.ed5 Nf4 8.Qf3 N6d5 9.Be4 f5 10.Bd5; 6.Nh3 d5 7.Bd3 d4 8.Ne2 e5 9.0-0 Bc5 10.f4) 6...Bb4 7.Bd3 Nf4 8.0-0 0-0 9.Ne2 Nd3 10.cd3; E3) 5...b6 6.e5 (6.Nf3 Bb7 7.Bd3 Ng6 8.0-0 Bd6 9.a4 Nf4 10.Re1; 6.Bd3 Ng6 7.Nf3 Bb7 8.g3 h5 9.Qe2 Bd6 10.0-0) 6...Nfd5 7.Nd5 Nd5 8.c4 Ne7 9.Bd3 Bb7 10.Nf3; E4) 5...d5 6.e5 (6.Bd3 Ng6 7.Nf3 de4 8.Be4 Ne4 9.Ne4 f5 10.Ng3) 6...Nd7 7.Nf3 Ng6 8.d4 Bb4 9.a3 Ba5 10.Bd3.

4.Nc3 Ng6 A) 5.e3 A1) 5...Nf6 6.h4 (6.Nf3 d5 7.h4 h5 8.Bd3 Bd6 9.Bg6 fg6 10.Qe2; 6.Bd3 d5 7.Nf3 Bd6 8.h4 Ng4 9.h5 N6e5 10.Ne5) 6...h5 7.Bd3 Ne5 8.Nf3 Nd3 9.cd3 b6 10.e4; A2) 5...a6 6.a4 (6.Nf3 ab5 7.Bb5 Nf6 8.0-0 c6 9.Bd3 Be7 10.Qe2; 6.Bd3 ab5 7.Nb5 c6 8.Nd4 Qb6 9.Rb1 Ra2 10.Ba3) 6...Nf6 7.Nf3 Bc5 8.Bd3 0-0 9.0-0 d5 10.Qe2; A3) 5...Be7 6.Nf3 (6.Bd3 d5 7.f4 Nf6 8.Nf3 d4 9.Ne4 de3 10.de3; 6.f4 Nf6 7.Bd3 d5 8.Nf3 d4 9.Ne4 de3 10.de3) 6...Nf6 7.Bd3 d5 8.0-0 0-0 9.Qe2 Re8 10.a4; A4) 5...d5 6.g3 (6.Nf3 Nf6 7.Bd3 Bd6 8.0-0 0-0 9.h3 Bd7 10.Re1; 6.Bd3 Nf6 7.Nf3 Bd6 8.h4 Ng4 9.h5 N6e5 10.Ne5) 6...Nf6 7.Nf3 Bd6 8.Bg2 0-0 9.0-0 e5 10.Qe2; B) 5.Rb1 B1) 5...a6 6.e3 (6.ba6 Ra6 7.e3 Ra5 8.Nf3 Nf6 9.Bb5 c6 10.Bd3; 6.Nf3 ab5 7.Nb5 Nf6 8.e3 c6 9.Nbd4 Bc5 10.Bd3) 6...ab5 7.Bb5 c6 8.Bd3 b5 9.Nf3 b4 10.Ne2; B2) 5...Nf6 6.e3 (6.Nf3 b6 7.e3 Bd6 8.Bc4 Bb7 9.Qe2 Ng4 10.h3; 6.h4 a6 7.ba6 b6 8.e4 Ba6 9.Ba6 Ra6 10.Nf3) 6...b6 7.Nf3 Bd6 8.Bc4 Bb7 9.h3 0-0 10.Qe2; B3) 5...d5 6.Nf3 (6.e3 Bd6 7.f4 Nf6 8.Nf3 e5 9.fe5 Ne5 10.Be2; 6.Nh3 Nf6 7.e3 Bd6 8.Ng5 e5 9.Nf3 e4 10.Nd4) 6...Nf6 7.e3 Bd6 8.h4 h5 9.Bd3 0-0 10.0-0; B4) 5...b6 6.g3 (6.Nf3 Nf6 7.e3 Bb7 8.Bc4 Bd6 9.h3 0-0 10.Qe2; 6.e3 Nf6 7.Nf3 Bb7 8.Bd3 Bd6 9.0-0 0-0 10.Nd4) 6...Bb7 7.Nf3 Nf6 8.Bg2 Bd6 9.0-0 0-0 10.Re1; C) 5.e4 C1) 5...Bb4 6.Bd3 (6.Nf3 Nf6 7.Bd3 0-0 8.0-0 d6 9.g3 e5 10.a3; 6.g3 Nf6 7.Nf3 d5 8.Bd3 0-0 9.e5 Ng4 10.0-0) 6...Nf4 7.g3 Nd3 8.cd3 c5 9.Nf3 d6 10.Nd5; C2) 5...a6 6.Nf3 (6.ba6 Nf6 7.Nf3 ba6 8.Rb1 Bb7 9.Bd3 Rb8 10.0-0; 6.a4 Nf6 7.Nf3 ab5 8.ab5 Ra1 9.Qa1 d5 10.Qa4) 6...Nf6 7.ba6 ba6 8.Rb1 Bb7 9.Bd3 Rb8 10.0-0; C3) 5...d5 6.ed5 (6.Nf3 Nf6 7.e5 Ne4 8.Bd3 Ng5 9.Ng5 Qg5 10.0-0; 6.h4 de4 7.Ne4 f5 8.h5 Nf4 9.Qf3 Nd5 10.h6) 6...ed5 7.Nf3 Nf6 8.Bd3 Bd6 9.Qe2 Be6 10.0-0; C4) 5...Nf6 6.Nf3 (6.Bd3 Nf4 7.Qf3 Nd3 8.Qd3 a6 9.Nf3 ab5 10.Nb5; 6.Qe2 d5 7.e5 Nd7 8.Nf3 Nh4 9.Nd4 Ng6 10.Nf3) 6...Bb4 7.Bd3 a6 8.ba6 Nf4 9.Bf1 ba6 10.g3; D) 5.h3 D1) 5...b6 6.Nf3 (6.e3 Bb7 7.Nf3 Bd6 8.d4 Nf6 9.Bd3 0-0 10.0-0; 6.g3 Bb7 7.Nf3 Nf6 8.Bg2 Ne5 9.d3 Nf3 10.ef3) 6...Bb7 7.e3 Bd6 8.Bd3 Nf6 9.0-0 0-0 10.a4; D2) 5...Nf6 6.Nf3 (6.e3 d5 7.Nf3 e5 8.Be2 Bd6 9.0-0 0-0 10.a4; 6.a4 d5 7.e3 Bd6 8.Nf3 e5 9.Be2 0-0 10.0-0) 6...d5 7.e3 e5 8.Be2 Bd6 9.0-0 0-0 10.a4; D3) 5...d5 6.Nf3 (6.e3 Nf6 7.h4 h5 8.Nf3 Bd6 9.Bd3 0-0 10.a4; 6.Rc1 Nf6 7.Nf3 Bd6 8.e3 e5 9.Be2 0-0 10.0-0) 6...Nf6 7.e3 e5 8.h4 Bg4 9.Be2 Bc5 10.Na4; D4) 5...a6 6.e3 (6.a4 Nf6 7.Nf3 Bb4 8.e3 b6 9.Bc4 ab5 10.ab5; 6.Nf3 ab5 7.Nb5 c6 8.Nc3 Nf6 9.e3 d5 10.h4) 6...ab5 7.Bb5 c6 8.Bd3 Ne5 9.Nf3 Nd3 10.cd3; E) 5.Nf3 E1) 5...Nf6 6.e4 (6.e3 d5 7.Bd3 Bd6 8.h4 h5 9.Ne2 Bd7 10.Ng3; 6.h3 d5 7.e3 e5 8.Be2 Bd6 9.0-0 0-0 10.a4) 6...Bb4 7.Bd3 Nf4 8.0-0 0-0 9.Ne2 Nd3 10.cd3; E2) 5...a6 6.a4 (6.e3 ab5 7.Bb5 Nf6 8.h4 c6 9.h5 Ne7 10.Bd3; 6.ba6 Nf6 7.e4 ba6 8.Rb1 Bb7 9.Bd3 Rb8 10.0-0) 6...Nf6 7.e3 Bc5 8.Bd3 0-0 9.0-0 d5 10.ba6; E3) 5...Be7 6.e3 (6.a4 Nf6 7.e3 d5 8.h4 h5 9.Bd3 Bd6 10.Bg6; 6.h3 Nf6 7.e3 d5 8.Bd3 0-0 9.0-0 Bd6 10.a4) 6...Nf6 7.Bd3 d5 8.0-0 0-0 9.Qe2 Bd7 10.g3; E4) 5...d5 6.h4 (6.e3 Nf6 7.Bd3 Bd6 8.h4 h5 9.Ne2 Bd7 10.Ng3; 6.g3 Nf6 7.Bg2 a6 8.0-0 d4 9.Nb1 Bc5 10.Na3) 6...h5 7.e3 Nf6 8.Bd3 Bd6 9.Ne2 Bd7 10.Ng3.

4.c4 b6 5.e3 Bb7 6.Nf3 Ng6 7.Be2 Nf6 8.d3 Be7 9.Nbd2 (9.0-0 a6=) 9...a6 10.a4 d5 (10...0-0 11.0-0=) 11.cd5 (11.0-0 0-0=) 11...ed5 (11...Qd5 12.Rc1 Qd7 13.0-0=) 12.Nd4 ab5 (12...0-0 13.0-0+=) 13.ab5 Ra1 14.Qa1 Qa8 (14...Qd7 15.Qa7 Bc8 16.Nc6+/–) 15.Qa8+/– Ba8 16.0-0 0-0 (16...Nh4 17.Nc6+/–) 17.Rc1 (17.Ra1 Bb4 18.N2f3 Rc8+/–) 17...Bd8 (17...Bb4 18.N2b3 Rc8 19.g4+/–) 18.Bf3 (18.N2f3 Bb7+/–) 18...Ne5 19.Be2 (19.Ra1 Bb7 20.Ra7 Bc8+/–) 19...Nfd7 (19...Ng6 20.Nf5 Re8+/–) 20.N2f3 (20.f4 Ng6+/–) 20...Nf3 21.Bf3 Nc5 22.Be2 (22.Ba3 Nd3 23.Rc3 Nc5 24.Bc5 bc5 25.Rc5 Re8+/–) 22...Re8 (22...Bf6 23.Ba3 Re8 24.Nf5+=) 23.Kf1 (23.Nf5 g6 24.Ra1 Bb7+/–) 23...Ne6 (better is 23...Bf6!?+=) 24.Ne6+- Re6?? (24...fe6 25.Be5 Re7+-) 25.Bd4 (better is 25.Ra1 Bb7 26.Ra7+-) 25...c6 (25...c5 26.bc6 Bc6 27.Bg4+=) 26.bc6 (26.Bg4 Rg6+/–) 26...Bc6+= 27.Rb1 Re7 28.Bf3 (28.Bb6? Rb7-+) 28...f6 (28...b5 29.Rc1 Re6 30.Ke2+=) 29.Rb2+/– Kf7 30.Bb6 Rb7 31.Bd4 Rb2 32.Bb2 Bb6 33.Bd4 (33.h3!?+/–) 33...Bd4+= 34.ed4 Ke6 (34...g5 35.Ke2+=) 35.Ke2 f5 (35...g5 36.g3+=) 36.Kd2 (36.h4 g6+=) 36...g5 37.g3 g4 38.Bg2 h5 39.h3 (39.Ke3 Bb5+=) 39...Bb5 (39...Ba4 40.Ke3+=) 40.hg4 (40.Ke3 gh3 41.Bh3 Kf6+/–) 40...hg4 41.f3 Bc6 42.fg4 fg4 43.Kc3 Kd6 44.Bf1 Bd7 45.Be2 Bf5? (better is 45...Ke7!?+=) 46.Kd2+/– Ke6 47.Ke3 Kf6 (47...Kf7 48.Kf4 Kf6 49.Bg4 Bd3 50.Bc8+-) 48.Kf4 Kg6? (better is 48...Bg6+-) 49.Bg4 Bd3 50.Ke5 Bc4 (50...Kg5 51.Be6+- (51.Kd5?! Kg4 52.Ke5 Bc4=)) 51.Be6 Kg5 (51...Kg7 52.Bd5 Be2 53.Be6+-) 52.Bd5 Bb5 (52...Bd3 53.Be6 Kg6 54.d5+-) 53.Be6 Bc6 (53...Kg6 54.Bf5 Kf7 55.d5+-) 54.Kd6 (54.d5 Bb5+-) 54...Bf3 (54...Bb5 55.Bd7 Bc4 56.Ke5+-) 55.g4 (55.d5 Bg2+-) 55...Be4 (55...Kf6+-) 56.Ke5 Bf3 57.Bf5 Bb7 58.d5 Bd5 59.Kd5 Kf6 60.Ke4 (60.Kd6 Kg5+-) 60...Kg5 61.Bd7 Kh6 (61...Kf6 62.Kf4 Kg7 63.g5+-) 62.Kf4 (better is 62.Kf5 Kg7 63.g5+-) 62...Kg6 (62...Kg7+-) 63.g5 Kf7 64.Kf5 Kg7 65.g6 Kg8 66.Kf6 Kf8 67.g7 Kg8 68.Be6 (68.Be6 Kh7 69.g8Q Kh6 70.Qg6) 1–0. Skaug,Thorbjorn – Forfang,Asmund, NM Roros, 2002. — — Thorbjorn Skaug was born in 1952 and died in 2020 a few days before his 68th birthday. He was a Norwegian chess player and enthusiast who lived in the Oslo region before moving to Fredrikstad in 2000. In addition to chess he participated in tennis and held a long-term season ticket for Fredrikstad football club matches. He worked as a psychologist and writer and contributed articles and reports to Norwegian chess club websites and publications. — — Skaug began active club play in the late 1980s with As Sjakklubb and later transferred to Follo Sjakkforening where he competed in every longplay club tournament from the autumn event of 1988 through 1999. After relocating he joined Fredriksstad Schakselskap and represented that club in most subsequent events. Between 1988 and 2015 he took part in 22 Norwegian national tournaments known as Landsturneringer five times for As five times for Follo and thirteen times for Fredriksstad Schakselskap. In the 2002 national tournament he won the class 4 section while playing for Fredriksstad Schakselskap. He rarely entered team matches playing only three times for As and five times for Follo. He obtained the title of National Arbiter in 2013. His FIDE ratings which are now listed as inactive stood at 1612 for standard chess 1605 for rapid and 1633 for blitz. — — Skaug consistently opened as White with the move 1.b4 the Orangutan or Sokolsky Opening and was known among Norwegian players as its leading local expert. He played this line regularly in club and national events and expressed greater satisfaction with draws achieved through it than with wins obtained by other means. — — His style was that of a committed amateur who valued participation and the psychological and practical challenge of an unconventional opening over pursuit of high placements. He competed steadily for decades without nearing podium positions in major events yet never lost enthusiasm for the game and continued posting on club sites as late as October 2020. — — Skaug left a legacy in the Fredrikstad and Follo chess communities as an enthusiastic organizer of humorous Christmas calendar puzzle competitions on club websites often featuring clever and nerdy themes. He also wrote match reports and light-hearted articles for local chess pages and once considered running for president of the Norwegian Chess Federation though the idea received limited support. Fellow players remember him for his consistent good spirits his devotion to 1.b4 and his ability to encourage younger members right up to the final weeks of his life. — — Note created: March 2026. (AI)

4.c4 d5 5.Nf3=.

4.e3 a6 5.Nf3 ab5 6.Bb5 c6 7.Be2 d5 8.0-0 Nf6 9.c4 Ng6 10.cd5 (10.Qc2 dc4 11.Bc4 Bd6=) 10...ed5 11.Bf6 (11.Bd4 Bd6=) 11...Qf6=+ 12.d4 Bd6 13.Qb3 0-0 14.Nbd2 Nh4 (14...Ra3 15.Qb6=+) 15.Nh4 (15.a4 Re8=) 15...Qh4 16.Nf3 Qh6 17.Rfc1 Ra3 18.Qb2 Bg4 19.h3 Bc8 20.Ne5 Ra7 21.Nd3 (21.Qb6 Ra8=+) 21...g5 (21...Ba3 22.Qb6 Ra6 23.Qb3 Bc1 24.Rc1-+) 22.Bg4? (22.Ne5!?=) 22...f5 (22...Bg4!? 23.hg4 Qh2 24.Kf1 Rfa8-+) 23.Be2-/+ g4 (23...Ba3 24.Qb6 Ra6-/+ (24...Bc1? 25.Qa7 Be3 26.fe3+-)) 24.hg4?? (better 24.a4=+) 24...fg4 (24...Qh2 25.Kf1 Qh1) 25.Ne5 (25.g3 Bf5 26.Bf1-+) 25...Qg5?? (25...g3!? 26.Nf3 Ba3 27.Qd2 Bc1 28.Rc1-+) 26.g3 (26.a4 Be5 27.de5 g3-/+) 26...h5 (26...Ba3!? 27.Qb3 Bc1 28.Rc1-+) 27.Kg2 (27.Bd3!?=+) 27...h4-/+ 28.Rh1 h3 29.Kg1 Be5 30.de5 Qf5 31.Bf1 Qe4 32.Rd1 Bf5?? (32...Re8-/+) 33.e6?? (better 33.Rd4 Qf3 34.Rf4+/-) 33...Qe6 34.Rd4 (34.a4 Rfa8-+) 34...Be4 35.Rh2 Qf5 (35...Rfa8 36.Rd2-+) 36.Be2 (36.Rd2 b5-+) 36...b5 (36...Rfa8 37.a4 Ra4 38.Ra4 Ra4 39.Bd1-+) 37.Rd1 Rfa8 38.Qc3 (38.Ra1-+) 38...Ra2 39.Qc6 R2a6 (better 39...Rf8 40.Qb5 Bg2 41.Rg2 hg2 42.Qd5 Qd5 43.Rd5 Re2 44.Rg5 Kh7-+) 40.Qb5-/+ Ra1 41.Qb2 Rd1 42.Bd1 Qg6 (42...Bf3 43.Bf3 Qf3-+ (43...gf3?! 44.Rh1=)) 43.Qe2?? (better 43.Be2-/+) 43...Ra1-+ 44.Qd2 (44.Rh1 Bh1 45.Kh2-+) 44...Qg7 (44...Bf3 45.Rh1 Rd1 46.Qd1 Bd1 47.f3 Bf3 48.Rh2 Qb1 49.Kf2 Qd1 50.e4 Qe2 51.Kg1 Qe1) 45.f4 gf3 46.Kf2 Qg3 (better 46...Rb1 47.Ke1 Qg3 48.Qf2 Qg7-+) 47.Kg3+- Rd1 (47...f2 48.Rf2 h2 49.Rh2+-) 48.Qd1 Kf7 49.Qd4 Ke6 50.Rh3 f2 (50...Bf5 51.Rh6 Bg6 52.Rg6 Kf7 53.Qg7 Ke8 54.Rb6 d4 55.Rb8) 51.Rh6 Kf5 (51...Kf7 52.Qf6 Ke8 53.Qe6 Kd8 54.Qg8 Kc7 55.Qg7 Kd8 56.Rh8) 52.Kf2 (52.Qf6) 52...Kg4 53.Qf6 (53.Qf6 d4 54.Rh4) 1-0. HIALUPHARMpl (2705) - fizteh (2735), Rated bullet game, lichess.org, 2024. (=1.b4 Nc6 2.b5 e6 3.Bb2 Nce7)

4.e3 b6 5.a4 Bb7 6.Nf3 h5 (6...a6 7.Be2=) 7.Nc3 (7.Be2 a6+=) 7...Nd5 (7...Nf6 8.Be2+=) 8.Nd5 Bd5 9.Bd3 (9.Be2 Nf6+=) 9...h4 (9...Nf6 10.a5+=) 10.c4 (10.a5 ba5 11.e4 Bb7+=) 10...Bb7 11.a5 h3 12.g4 (better is 12.g3+=) 12...f6? (better is 12...ba5 13.Ra5 Nf6=) 13.a6 Bc8 (13...Bf3 14.Bg6 (worse is 14.Qf3 Ne7+/–) 14...Ke7 15.Qf3+-) 14.Bg6 Ke7 15.Nd4 (better is 15.Ne5 Nh6 16.Be4 fe5 17.Ba8+-) 15...e5? (15...Rh6 16.Ba3 c5 17.bc6 d6+-) 16.Ba3 d6 (16...c5 17.bc6 d6+-) 17.Nc6 Kd7 18.Qf3 Bb7 (18...Ne7 19.Nd8 Kd8 20.Qa8 Ng6 21.Qa7 Bg4 22.Qa8 Kd7+-) 19.Qf5 1–0. Cleo – Odette, internet corr, 2018.

4.e3 c6 5.a4 Qa5 6.c4 cb5 (6...d5 7.Nf3=) 7.ab5+= Qb4 (7...Qd8 8.Nf3+=) 8.Ba3 (8.Bd4!? a5 9.Bc3+/–) 8...Qa5 9.Nc3 Nf5?? (better is 9...Qd8+/–) 10.Bf8+- Qb6 (10...Qc7 11.Bb4+-) 11.Ba3 Nf6 (11...Qc7 12.g4 Nfh6 13.Ne4+-) 12.Nf3 (12.e4 Nd4 13.e5 Ng8+-) 12...d5 13.c5 Qc7 14.Be2 0-0 15.c6 (15.b6 Qb8+-) 15...Rd8 16.cb7 (16.cb7 Bb7 17.Rc1+-) 1–0. GuestYTSB – GuestLYTZ, freechess.org, 2017.

4.e3 d5 5.Nf3 Bd7 6.a4 h5 7.Be2 h4 8.h3 Nf6 9.d3 a6 10.ba6 Ra6 11.Bf6 gf6 12.c3 c5 13.Nbd2 Bc6 14.0-0 f5 15.Nb3 Ng6 16.Nbd2 e5 17.Qc2 d4 18.cd4 cd4 19.ed4 e4 20.de4 fe4 21.Ne5 Ne5 22.de5 Qd5 23.Bc4 Qe5 24.Ba6 Bd6 25.Rfb1 Qh2 26.Kf1 e3 27.Nf3 Bf3 28.gf3 ef2 29.Qf2 Qh3 30.Ke2 Qe6 31.Qe3 ba6 32.Qe6 fe6 33.Rb6 Kd7 34.Ra6 h3 35.Rd1 h2 36.Rad6 Kc7 37.Rd7 Kc6 38.R7d6 Kc5 39.Ra6 h1Q 40.Rh1 Rg8 41.Rh5 e5 42.Re5 Kd4 43.Re4 Kc3 44.Rc6 Kb2 45.Rb6 Ka3 46.Re3 Ka4 47.Rb7 Rg2 48.Kd3 Rd2 49.Ke4 Rd4 50.Kd4 Ka5 51.Re1 Ka6 ½–½. Phomopsis (1685) – vishuee001 (1665), lichess.org, 2018.

4.e3 d5 5.Nf3 Nf6 6.Be2 Ng6 7.0-0 b6 8.c4 Bd6 9.Nc3 Bb7 10.cd5 ed5 11.d4 0-0 12.a4 Ne4 13.Ne4 de4 14.Nd2 Qh4 15.g3 Qe7 16.Qc2 Rac8 17.Rac1 f5 18.Qb3 Kh8 19.Bc3 c5 20.dc5 Bc5 21.Bd4 Bd4 22.ed4 Qg5 23.Qe3?? (better is 23.Rc8 Rc8 24.Qf7 Qd2 25.Qb7=) 23...f4-+ 24.Qa3 f3 (better is 24...fg3 25.hg3 Qd2 26.Rc8 Rc8-+) 25.Rc8 Rc8 26.Bd1?? (better is 26.Ne4 Be4 27.Bf3 Bf3 28.Qf3-/+) 26...Qd2 27.Qd6 (27.Qe3 Qb4 28.Re1-+) 27...e3 28.fe3 (28.Qd7 e2 29.Be2 fe2 30.d5 ef1R 31.Kf1 Qd1 32.Kg2 Bd5 33.Qd5 Nf4 34.gf4 Qg4 35.Kf1 Rc1 36.Qd1 Rd1) 28...Qg2 0–1. Neumann,Frank – Bester,Kazimierz, RN–2012–0-00469, 2012.

4.e3 d6 5.c4 Nf6 (5...e5 6.d4 ed4 7.ed4=) 6.Nf3 h6 (6...Ng6 7.d4=) 7.Bd3 (7.d4 a6+=) 7...Bd7 (7...e5 8.0-0=) 8.0-0 b6 (8...e5 9.Nc3+=) 9.Nc3 Bc8 (9...a6 10.Qb3+=) 10.Ne4+/– Bb7? (better is 10...Ne4 11.Be4 d5 12.cd5 ed5+/–) 11.Bf6+- gf6 (11...Be4 12.Be4 gf6 13.Ba8 Qa8+-) 12.Nf6 1–0. GuestCSJR – GuestFPST, freechess.org, 2017.

4.e3 Ng6 5.c4 Bd6?? 6.Nf3?? (better is 6.Bg7 Nf6 7.Bh8 Nh8 8.Nf3+-) 6...Nf6= 7.Be2 0-0 8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 b6 12.Nc3 Bb7 13.d4 Bf3 (13...Qe7!?=) 14.Bf3+= Nh4 15.Be2 Ng2? (better is 15...Qa8 16.d5 Ng6+=) 16.Kg2+- Qc8 (16...Bb4 17.Qd3+-) 17.e4 e5 18.Rg1 ed4 19.Qd4 Bc5 20.Qe5 Re8 21.Qf5 Bd4 22.Kh1 Re5?? (22...g6 23.Qf3+-) 23.Qf4 (better is 23.Qf6! Qf8+-) 23...Qa8? (23...Re6+-) 24.f3 (better is 24.Qf6! Re4 25.Qf3+-) 24...Bg1+= 25.Qe5 Qa1 26.Kg2 Bc5 27.Kh3 (27.Qc7 Qc3 28.Qd8 Bf8 29.Qb6-+) 27...d6 (better is 27...Bd6 28.Qd4 Bb4-+) 28.Qe7+= h6 29.Nd5 Nd5 30.Qe8 Kh7 31.ed5 Qb2?? (better is 31...Qf6+=) 32.Bd3+- g6 33.Qf7 Kh8? (better is 33...Qg7 34.Bg6 Kh8 35.Qe8 Qg8+-) 34.Qe8 Kg7 35.Qg6 Kf8 36.Qh6 (36.Qf5 Kg7 37.Qg4 Kf8 38.Qc8 Kg7 39.Qc7 Kf6 40.Qd8 Kf7 41.Qd7 Kf8 42.Qf5 Kg7 43.Qg6 Kf8 44.Qh6 Qg7+-) 36...Ke7? (36...Qg7 37.Qh5 Qe5+-) 37.Qe6 Kd8 (37...Kf8 38.Qc8 Kf7 39.Qc7 Kf6 40.Qd8 Kf7 41.Qd7 Kf8 42.Qc8 Kf7 43.Qe6 Kf8 44.Bg6 Qh8 45.Kg4+-) 38.Bf5 (better is 38.Qg8 Ke7 39.Bg6+-) 38...Qh8 39.Kg4 Qg7 40.Bg6 Qd4 (40...Qd7 41.h4+-) 41.Be4 (better is 41.f4 Qg1 42.Kf5 Qb1 43.Kf6 Qb2 44.Kf7+-) 41...Qc4?? (better is 41...Qg1 42.Kh3 Qf1 43.Kh4 Qf2 44.Kg5 Qg2 45.Kf5 Qh2+-) 42.Qg8 Ke7 43.Qg5 (43.Qg7 Kd8 44.Qf8 Kd7+-) 43...Kf8?? (43...Kd7+-) 44.Qf6 (better is 44.Qh6 Ke8+-) 44...Ke8 (44...Ke8 45.Kh5 Qe4 46.fe4 Kd7 47.Qe6 Kd8 48.Kg6 Bf2 49.Kf7 c5 50.bc6 Kc7 51.Qd7 Kb8 52.Qb7) 0–1. GuestYRNW – GuestBXSV, freechess.org, 2017.

4.e3 Ng6 5.Nf3 f6 6.Bd3 N6e7 7.0-0 d5 8.a4 c6 9.Nh4 cb5 10.ab5 b6 11.Qh5 Kd7 12.Nc3 Qe8 13.Qf3 Bb7 14.Qh3 Bc8 15.Ne2 g5 16.Nf3 h5 17.Ng5 fg5 18.Bh8 h4 19.Qg4 Qf7 20.Qg5 Bh6 21.Qh4 Ng6 22.Bg6 Qg6 23.Nd4 Bg5 24.Qg3 Bb7 25.Be5 Nf6 26.Bf4 Ne4 27.Qg4 Nf6 28.Qg5 Qg5 29.Bg5 Ne4 30.Bh4 Nd2 31.Rfd1 Nc4 32.Nf3 Nd6 33.Ne5 Ke8 34.Bg3 Nb5 35.c4 Nc3 36.Rd3 Ne2 37.Kf1 Ng3 38.hg3 Ke7 39.cd5 Bd5 40.Ng6 Kf6 41.Nf4 Rd8 42.Ra7 Bc4 43.Ke2 Bd3 44.Nd3 b5 45.Rb7 Rd5 46.Nf4 Rc5 47.Rb6 Rc2 48.Kf3 Kf7 49.Re6 b4 50.Rb6 Rc4 51.g4 b3 0–1. Abdullaevich – mankka66 (1625), lichess.org, 2018.

4.e4 c6 5.c4 cb5 6.cb5 Qb6 (6...d5 A) 7.Nc3 Ng6 (7...d4 8.Nce2 e5 9.f4 Bg4 10.h3 Be2=) 8.ed5 ed5 9.b6 Nf6 10.Qb3 a6=; B) 7.Bd3 Ng6 (7...de4 8.Be4 Nd5 9.Nf3 Ngf6 10.Bd5 Nd5=; 7...Bd7 8.Nc3 Ng6 9.ed5 ed5 10.Nf3 Qe7=) 8.Qf3 Qd6 9.Bc2 Qb4 10.Ba3 de4=; C) 7.e5 Nh6 (7...Bd7 8.Nf3 Nf5 9.Nc3 Rc8 10.Rc1 Nh4=; 7...Nf5 8.Nf3 Bd7 9.Nc3 Rc8 10.Rc1 Nh4=; 7...a6 8.Nf3 ab5 9.Bb5 Bd7 10.Nc3 Bb5=; 7...Qa5 8.Nf3 Bd7 9.Bc3 Qc7 10.Be2 Ng6=) 8.Nf3 Ng6 9.Be2 Nf4 10.0-0 Bd7=; 6...Nf6 A) 7.e5 Nfd5 8.Ba3 Ng6 9.Bf8 Rf8 10.Nf3 d6=; B) 7.Bd3 Ng6 (7...d5 8.e5 Nd7 9.Nf3 Ng6 10.0-0 a6=; 7...d6 8.Nf3 Ng6 9.0-0 Be7 10.Nc3 0-0=) 8.e5 Nd5 9.Be4 d6 10.Nf3 de5+=; C) 7.Qf3 Ng6 8.Bf6 gf6 9.Nc3 f5 10.ef5 Nh4=; 6...Ng6 7.Nf3 Nf6 (7...d5 8.e5 Bd7 9.Nc3 Rc8 10.Rc1 Qb6=; 7...N8e7 8.h4 h5 9.Nc3 d5 10.Rc1 de4=; 7...Nf4 8.Bd4 d5 9.e5 Ne7 10.Be3 Nfg6+=) 8.e5 Nd5 9.Nc3 d6 10.Nd5 ed5=; 6...Nh6 A) 7.Nf3 Ng6 (7...d5 8.Nc3 Ng6 9.ed5 ed5 10.b6 Qb6+=) 8.Be2 d5 9.ed5 Qd5 10.0-0 Qf5=; B) 7.Nc3 d5 8.Nf3 Ng6 9.ed5 ed5 10.b6 a6+=) 7.Nf3 d5 8.Nc3 (8.e5 Nf5 9.Be2 Bd7 10.a4 Rc8+=) 8...Nf6 (8...Bd7 9.a4 Rc8 10.Bd3 Nf6+=) 9.e5 Nd7 10.Na4 (10.Be2 Ng6=) 10...Qa5 (10...Qd8=) 11.Bc3 Qc7 12.Rc1 f6?? (better is 12...Qd8+=) 13.ef6+- Nf6? (13...gf6 14.Bf6! Qc1 15.Qc1 Nf6+-) 14.Bf6 Qf4 15.Bg5 Qf5 16.d4 h6 17.Bd2 Qe4 18.Be2 Nf5 (18...Ng6 19.0-0+-) 19.0-0 (better is 19.Nc3!? Qg4 20.Ne5 Qd4 21.Bh5 g6 22.Ng6 Rg8+-) 19...Nd4 20.Nd4 Qd4 21.Bh5 Ke7 (21...Kd7 22.Rc7! Kd6 23.Qc2 Qd2 24.Qd2 Kc7 25.Rc1 Kd8 26.Qf4 Bd7 27.Qc7 Ke7 28.Nc5 b6 29.Qd7 Kf6 30.Qe6 Kg5 31.Qg6 Kh4 32.Qg4) 22.Rc7 (better is 22.Bg5! hg5 23.Qd4 Rh5+-) 22...Kd6 23.Rf7 e5 24.Qc1 Bd7 (24...Qc4 25.f4 Bd7 26.fe5 Kc7+-) 25.Qa3 Ke6 26.Qh3 Kd6 (26...Qg4 27.Qg4 Kd6 28.Rd7) 27.Rd7 (27.Qd7) 1–0. pierre – inflatedhead, internet, 2008.

4.e4 c6 5.c4 d6 6.Nf3 (6.Nc3 A) 6...d5 7.Nf3 Nf6 8.e5 Nd7 9.Rc1 c5 10.d4 Qa5; B) 6...Bd7 B1) 7.bc6 Bc6 8.d4 d5 9.ed5 ed5 10.Nf3 Nf6; B2) 7.Be2 d5 8.ed5 cd5 9.cd5 Nd5 10.Nd5 ed5; B3) 7.Rc1 a6 (7...Nf6 8.Nf3 Qa5 9.Be2 a6 10.a4 e5; 7...cb5 8.cb5 Nf6 9.Nf3 a6 10.Qc2 ab5; 7...Rc8 8.Nf3 Nf6 9.Be2 cb5 10.cb5 Qa5; 7...d5 8.Nf3 de4 9.Ne4 Ng6 10.Ne5 Ne5) 8.ba6 ba6 9.Nf3 Rb8 10.Rb1 Qa5; B4) 7.Nf3 Rc8 (7...cb5 8.cb5 Rc8 9.Be2 Nf6 10.0-0 Qa5; 7...Nf6 8.Be2 Ng6 9.0-0 Nf4 10.a4 a6) 8.Be2 cb5 9.cb5 Nf6 10.0-0 Qa5; C) 6...e5 7.Nf3 Nf6 (7...Bg4 8.Be2 Nf6 9.d4 Ng6 10.h3 Bf3; 7...f5 8.d4 fe4 9.Ne4 Nf6 10.Nf6 gf6; 7...Qa5 8.Be2 Bg4 9.0-0 Nf6 10.a3 Rc8) 8.Be2 Bg4 9.d4 Qa5 10.Qd2 Ng6; D) 6...Nf6 7.Nf3 d5 8.e5 Nd7 9.Rc1 c5 10.d4 Qa5) 6...d5 (6...Nf6 A) 7.Nc3 d5 (7...Bd7 8.Be2 Ng6 9.0-0 Nf4 10.d4 cb5) 8.e5 Nd7 9.Rc1 c5 10.d4 cd4; B) 7.Bf6 gf6 8.bc6 bc6 9.d4= Bg7 10.Bd3 c5; 6...Bd7 A) 7.Be2 cb5 (7...Nf6 8.Nc3 Ng6 9.0-0 Nf4 10.Re1 Be7) 8.cb5 Nf6 9.Nc3 Rc8 10.0-0 Qa5; B) 7.Nc3 Rc8 (7...Nf6 8.Be2 Qa5 9.0-0 cb5 10.cb5 Rc8) 8.Be2 Nf6 9.a4 Ng6 10.0-0 Be7) 7.Qc2 (7.Nc3 Nf6 8.e5 Nd7+= 9.Rc1 c5 10.d4 Qa5; 7.ed5 ed5 8.Be2 Bd7 9.bc6 Bc6 10.Ne5 Qb6) 7...Bd7 (7...de4 8.Qe4 cb5 9.cb5= Nf6 10.Bf6 gf6) 8.a4 (8.Nc3 Rc8= 9.a4 dc4 10.Bc4 cb5) 8...Rc8 (8...de4 9.Qe4 Nf6 10.Bf6 gf6 11.Be2=) 9.Ne5 (9.Nc3 dc4 10.Bc4 cb5 11.Nb5 Nc6=) 9...f6 (9...Ng6 10.Ng6 (10.bc6 Ne5) 10...hg6 11.d3=) 10.Nd7+= Qd7 11.d4 Ng6 (11...f5+=) 12.Bd3 (12.bc6 bc6 13.cd5 ed5+=) 12...Be7 (better is 12...Bb4 13.Kf1 dc4 14.Qc4 Nf4+=) 13.ed5+/– cd5 14.Bg6 hg6 15.Qg6 Kd8 (15...Kf8 16.c5+/–) 16.c5 Qc7?? (better is 16...Bf8+/–) 17.Qg7+- Rh4 (17...Rh2 18.Rh2 (18.Qg8?! Kd7 19.Qh7 Rh7 20.Rh7 Qf4+=) 18...Qh2 19.Qg8 Kd7 20.Qg7+-) 18.Qg8 Kd7 19.Qg3 Re4 (19...Qg3 20.fg3 (worse is 20.hg3 Rh1 21.Ke2 e5+=) 20...Re4 21.Kd1+-) 20.Kd2 Rf4 21.Kd3 e5 22.Qh3 f5 (22...Kd8 23.Qe6 Qd7 24.Qd7 Kd7 25.de5 fe5 26.Be5 Rf2 27.Nc3+-) 23.de5 Rf8 (23...Bc5 24.Rc1 Qb6 25.Qh7 Kd8 26.Qf7 Ra4 27.Qd5 Ke7 28.Ra4 Qb5 29.Qc4 Qb2 30.Qh4 Kd7 31.Qh7 Ke6 32.Qg6 Ke7 33.Qf6 Ke8 34.Qe6 Kd8 35.Rac4+-) 24.e6! Kd8 (24...Ke6 25.Re1 Double attack) 25.Bd4 (better is 25.Qg3 Bh4 26.Qg7+-) 25...Bc5?! (25...Rd4 26.Kd4 Qc5 27.Kd3 Qc4 28.Kd2 Bg5 29.Kd1 Qd4 30.Kc2 Qa1+-) 26.Bf6 (better is 26.Bc5 Qc5 27.e7 Qe7 28.Qe3+-) 26...Rf6= 27.Nc3 Bb4 28.Rhc1 (28.e7 Be7 29.Rad1-/+) 28...Qc4 29.Kd2 (29.Ke3 Re6 30.Kd2 Qe2) 29...Bc3 (29...Rf2 30.Kd1 Qf1) 30.Rc3 (30.Qc3 Rf2 31.Ke3 Re2 32.Kf3 Qg4) 30...Rf2 31.Kc1 (31.Ke3 Qf4 32.Kd3 Qd2) 31...Qf1 0–1. Trkn – Chess Player, itsyourturn.com, 2001.

4.e4 d6 5.Nc3 A) 5...Ng6 6.Nf3 (6.Be2 Nf4 7.Bf3 Ng6 8.a3 Nf6 9.Nge2=) 6...Nf6 7.Be2 Nf4 8.0-0 e5 9.Bc4=; B) 5...Nf6 6.Nf3 Ng6 7.Be2 Nf4 8.0-0 Ne2 9.Qe2=; C) 5...f5 6.d4 (6.Nf3 e5 7.ef5 Bf5 8.d4 e4 9.Nh4=; 6.ef5 Nf5 7.Nf3 Nf6 8.Bc4 d5 9.Bd3=) 6...Nf6 7.Bd3 c6 8.a4 Qa5 9.Qd2+=; D) 5...e5 6.Nf3 (6.Bc4 f5 7.Qh5 g6 8.Qf3 Nf6 9.Nge2=) 6...f5 7.d4 fe4 8.Ne4 d5 9.Ned2=; E) 5...d5 6.Nf3 Nf6 7.Bd3 Ng6 8.ed5 Nf4 9.de6=.

4.e4 d6 5.Bd3 Bd7 (5...e5 6.Nf3 (6.Ne2 Ng6 7.Nbc3 Be6 8.0-0 Qh4 9.Qe1=; 6.Nc3 Be6 7.Nge2 d5 8.f4 d4 9.Na4=) 6...Ng6 7.Bc4 Qf6 8.d4 Nf4 9.g3=; 5...Nf6 6.Nc3 (6.Ne2 Ng6 7.Nbc3 Ne5 8.Nc1 d5 9.ed5=; 6.Nf3 Ng6 7.0-0 Nf4 8.Nc3 Nd3 9.cd3=) 6...Ng6 7.Nge2 Ne5 8.Nc1 d5 9.ed5=; 5...Ng6 6.Nf3 (6.Ne2 Ne5 7.0-0 Nd3 8.cd3 Nf6 9.Qc2=) 6...Nf4 7.0-0 e5 8.Bc4 Qf6 9.Nc3=; 5...a6 6.ba6 (6.Nf3 ab5 7.Bb5 c6 8.Be2 Ng6 9.d4=) 6...ba6 7.Nc3 Rb8 8.Rb1 Ng6 9.Nge2=; 5...Qd7 6.Ne2 (6.Nc3 Ng6 7.Nge2 Nf6 8.0-0 Be7 9.f4=; 6.Nf3 e5 7.0-0 Nf6 8.Nc3 Qg4 9.Be2=) 6...d5 7.a4 de4 8.Be4 a6 9.Bd3=) 6.Nf3 (6.Nc3 Ng6 7.Be2 Qg5 8.g3 0-0-0 9.Nf3=; 6.Ne2 Ng6 7.0-0 Ne5 8.a4 Nd3 9.cd3=) 6...c5 (6...Nf6 7.0-0 c6 8.bc6 Nc6 9.Nc3=) 7.Nc3 (7.0-0 Nf6 8.e5 de5 9.Ne5+=) 7...g6 (7...d5 8.ed5 ed5 9.0-0+=) 8.e5 d5 9.0-0 Bg7 10.Na4 (10.a4 f6+=) 10...b6 (10...c4 11.Be2 Bb5-/+) 11.c4 d4 12.Be4 Rb8 13.Ng5 (13.Rb1 f5 14.ef6 Nf6=) 13...h6 (better is 13...Be5!? 14.Qe2 a6+=) 14.Nf3+= Qc7 15.d3 (15.Re1!?+=) 15...Be5= 16.Ne5 Qe5 17.Re1 Qg5 18.Bc1 Qh5 (18...Qf6 19.a3=) 19.Bf3 (better is 19.Qh5 gh5 20.Bf4+/–) 19...Qh4?? (better is 19...Qf5=) 20.g3+- Qf6 21.Bf4 (21.Bf4 Nc8 22.Bb8+-) 1–0. pierre – starpratik111, internet, 2008.

4.e4 d6 5.Be2 A) 5...d5 6.e5 a6 7.a4 Ng6 8.Nf3 Nf4 9.0-0=; B) 5...a6 6.ba6 (6.Nf3 ab5 7.Bb5 c6 8.Be2 e5 9.d4=) 6...ba6 7.Nc3 Bb7 8.Rb1 d5 9.ed5=; C) 5...Nf6 6.Nc3 (6.d3 Qd7 7.Nc3 Ng6 8.Nf3 d5 9.e5=) 6...d5 7.e5 Nd7 8.Nf3 Ng6 9.d4=.

4.e4 d6 5.Nf3 c6 6.a4 (6.Nc3 Nf6+/–) 6...Bd7 7.Nc3 Ng6 8.Bc4 N8e7 (8...d5 9.Bd3+=) 9.0-0 c5 (9...d5 10.Bb3+/–) 10.d4 (10.a5 Ne5 11.Ne5 de5+/–) 10...cd4+/– 11.Qd4 Nc8 (11...Qc7!? 12.Nd1 Ne5+/–) 12.a5+- e5? (better is 12...a6+-) 13.Qd5 Qe7 (13...Be6 14.Qb7 Bc4 15.Qc6 Qd7 16.Qa8 Bf1 17.Kf1 d5+-) 14.Qb7 Nf4 15.Qa8 Qd8 16.Qb7 Be7 (16...g5 17.h3 Be6 18.Nd5 Bd5 19.Bd5 Nd5 20.Qd5+-) 17.b6! 0-0 (17...ab6 18.a6 Passed pawn) 18.ba7 Na7 19.Qa7 Qc8 20.Ba6 Qd8 21.Rfd1 (better is 21.Ne5 de5 22.Rfd1 Qb8 23.Qb8 Rb8 24.Rd7 Rb2+-) 21...Bh3 22.Bf1 (better is 22.gh3!? Nh3 23.Kg2 Qb8 24.Qb8 Nf4 (24...Rb8?? 25.Bb5 Nf4 26.Kf1+-) 25.Kf1 Rb8+-) 22...Bg4 23.Ne5! de5 24.Rd8 Rd8 25.Qe7 (25.Qe7 Ra8 26.a6+-) 1–0. DEFFM – purushotham, freechess.org, 2018.

4.e4 d6 5.Nf3 d5 6.e5 (6.Nc3 Ng6 7.ed5 ed5 8.Qe2 N8e7 9.Qe3=) 6...a6 7.Nc3 ab5 8.Bb5 Bd7 9.a4=.

4.e4 d6 5.Nf3 Bd7 6.Nc3 (6.Be2 Nf6 7.Bf6 gf6 8.0-0 f5 9.e5=) 6...Nf6 7.Be2 Ng6 8.0-0 Nf4 9.Bc4=.

4.e4 d6 5.Nf3 e5 6.Nc3 (6.d4 f5 7.Nc3 fe4 8.Ne4 d5 9.Ng3=) 6...f5 7.d4 fe4 8.Ne4 d5 9.Ng3=.

4.e4 d6 5.Nf3 Nf6 6.Nc3 (6.Bf6 gf6 7.d4 f5 8.Nbd2 fe4 9.Ne4=) 6...Ng6 7.Be2 Nf4 8.0-0 Be7 9.Re1=.

4.e4 d6 5.Nf3 Ng6 6.d4 (6.Be2 Nf6 7.Nc3 Be7 8.0-0 0-0 9.Re1=; 6.Nc3 Nf6 7.Be2 Nf4 8.0-0 Be7 9.Re1=; 6.Bd3 Nf6 7.0-0 Nf4 8.Nc3 Nd3 9.cd3=) 6...Be7 7.Bd3 Nf4 8.0-0 Nf6 9.Re1=.

4.e4 Ng6 5.Nf3 d5 A) 6.ed5 ed5 7.Be2 Nf6 A1) 8.Nc3 Bd6 (8...Bc5 9.0-0 0-0=) 9.0-0= 0-0+=; A2) 8.0-0 Bd6 9.Re1 0-0=; B) 6.e5 B1) 6...Bd7 7.Nc3 Nh4 8.a4 Bb4 9.a5 a6=; B2) 6...N8e7 7.Be2 Nf4 8.0-0 Neg6 9.Ba3 Ba3=; B3) 6...Nh6 7.Be2 Nf5 8.0-0 Nf4 9.Ba3 Ba3=; B4) 6...Be7 7.Be2 Nf4 8.0-0 a6 9.a4 Bd7=; B5) 6...Nh4 7.Ba3 Ba3 8.Na3 Nh6 9.c3 0-0=; B6) 6...Qd7 7.Be2 Nf4 8.0-0 a6 9.a4 Ne7=; B7) 6...a6 B71) 7.Nc3 ab5 8.Bb5 (8.Nb5 Nh6 9.a4 c6=) 8...c6 9.Bd3 (9.Be2= d4=) 9...Nf4=; B72) 7.ba6 ba6 8.c4 N8e7 9.d4 dc4=; B8) 6...c6 7.bc6 bc6 8.Ba3 Ba3 9.Na3 f6=.

4.e4 Ng6 5.Nf3 Nf6 6.e5 Ne4=.

4.e4 Ng6 5.g3 b6 (5...d5 6.e5+=) 6.Bg2 Bb7 7.Ne2 f6 (7...a6!?=) 8.0-0 e5 9.d4 d6 (9...a6 10.a4+=) 10.de5 (10.c4!?+/–) 10...de5 11.Qd8 Rd8 12.c4 Bd6 13.Rd1 N8e7 14.Bc1 0-0 15.f4?? (better is 15.Nbc3=) 15...Bc5-+ 16.Kh1 (16.Rd4-+) 16...Rd1 17.Bf1 (17.Ng1 Rg1) 17...Rf1 (17...Be4) 18.Kg2-+ Rf2 19.Kh1 Be4 20.Kg1 Rf4 21.Nd4 Bd4 22.Be3 Be3 0–1. pierred – v(rus), Rated game, 2003.

4.Nf3 c6 5.e4 Ng6 (5...d5 6.Nc3=) 6.Be2 Bc5?? (better is 6...d5 7.ed5 cd5=) 7.Bg7+- f6 8.d4 Bd6 9.0-0 Qe7 10.Bh8 Nh8 11.c4 (11.a4 Bc7+-) 11...Bf4 (11...c5 12.dc5 Bc5 13.Nbd2+-) 12.Nc3 Ng6 13.Rb1 a6 (13...c5 14.dc5 Qc5 15.Na4+-) 14.ba6 Ra6 (14...ba6 15.c5+-) 15.c5 (better is 15.Na4+-) 15...e5 (15...Ra3 16.Qd3 Kf8+-) 16.Ba6 ba6 17.Rb8 Qd8 18.d5 d6 (18...cd5 19.Nd5 N8e7 20.Nf6 Kf7+-) 19.cd6 Kd7 (19...Qd7 20.Qa4 N6e7 21.de7 Ne7 22.dc6 Qc7+-) 20.dc6 Kc6 21.Na4 Qd6 22.Qc2 Kd7 (22...Qc5 23.Qc5 Kd7 24.Rd1 Ke8 25.Qc8 Kf7 26.Qg8 Ke7 27.Rb7) 23.Qc8 Ke7 24.Qe8 1–0. marekt – surfnsuds, internet, 2005.

4.Nf3 d5 5.e3 Nf5 6.c4 b6? (better is 6...Nf6+=) 7.cd5+- Qd5 8.Nc3 Qd8 9.Qc2 Bd6 10.e4 Nh4 11.Nh4 Qh4 12.g3 Qg4 13.Nd5 (13.Be2!? Qg6 14.Bd3 Qh6+/–) 13...ed5+/– 14.Be2 Qg6? (14...Qe4 15.Qe4 de4 16.Bg7 f6 17.Bh8 Ke7+=) 15.Qc6+- Kd8 16.Qa8 Qe4 17.0-0 Nf6 (17...Qe2?? 18.Bg7 Qb5 19.Bh8+-) 18.Rae1 Qf5 19.Bd1 h5 20.h4 Qh3 (20...Qd3+-) 21.Bf3 (21.Qa7?! Bg3 22.fg3 Qg3 23.Kh1 Qh3 24.Kg1 Qg3 25.Kh1 Qh3 26.Kg1 Qg3=) 21...Bg3 (21...Rh6+-) 22.fg3 Qg3 23.Bg2 Ng4 (23...d4 24.Bd4 Ne8+-) 24.Qd5 Bd7 25.Be5 Ne5 26.Re5 Rh6 27.Rf7 Rd6 28.Qa8 1–0. capablancaven (2055) – cothorabar, gameknot.com, 2013.

5.e5 a6 6.Nf3 A) 6...Nf5 7.d4 ab5 (7...Ngh6 8.Nbd2 ab5 9.Bb5 Bd7=) 8.Bb5 Bd7 9.Bd3= 9...Ngh6=; B) 6...Ng6 7.ba6 ba6 8.c4 N8e7 9.d4 dc4=; C) 6...Nh6 7.Nc3 ab5 8.Bb5 Bd7 9.a4 Nef5=; D) 6...ab5 7.Bb5 Bd7 8.Be2 Ng6 9.d4 N8e7=.

5.e5 Nf5 6.Nf3 A) 6...a6 A1) 7.a4 ab5 (7...Nge7 8.Be2 Ng6 9.0-0 Nf4=) A11) 8.Bb5 c6 9.Bd3= (9.Be2 b6=) 9...Ngh6=; A12) 8.ab5 Ra1 9.Ba1 Nge7=; A2) 7.d4 ab5 8.Bb5 c6 9.Bd3 b6=; B) 6...Ngh6 7.d4 a6 8.ba6 ba6 9.c4 c5=.

5.e5 Nh6 A) 6.Nf3 Nef5 (6...a6 7.Nc3 ab5 8.Bb5 Bd7 9.a4= Nef5=) 7.Bd3 a6 8.ba6 ba6 9.Nc3 c5=; B) 6.d4 Ng6 7.Nf3 Nh4 (7...Bd7 8.Bd3 Nf4 9.0-0 c6=) 8.Nbd2 N6f5 9.a3= Bd7=.

6.a4 Ng6 (6...a6 7.Nf3 Nf5 8.Be2 Nh4 9.Nh4 Qh4) 7.Nf3 Nh6 8.Be2 Nf4 9.0-0 Nf5.

6.c4 g6 (6...dc4!? 7.Bc4 c6= 8.Nc3 Nd5 9.Bd5 ed5) 7.Nf3 (7.Nc3 c6 8.Nf3 Bg7 9.d4 cb5) 7...a6 (7...Bg7 8.Nc3 Nh6 9.d4 c6) 8.Nc3 (8.ba6 ba6 9.Na3 Rb8+= (9...Bc6+=)) 8...c6 (8...dc4 9.ba6 (9.a4 ab5) 9...Ra6 10.Bc4+=; 8...ab5 9.cb5 Nf5) 9.Nd4 (9.ba6 ba6 10.Be2 Bg7+/–) 9...c5 (9...ab5 10.cd5 Nd5 11.Nd5 cd5 12.Nb5+=) 10.Nb3+/– Qc7 (10...dc4 11.Nc5 Qc7 12.ba6 ba6 13.N3e4+-) 11.f4. Schiffler.

6.Be2 Nf5 (6...Ng6 7.Nf3 Nh4 8.Nh4 Qh4 9.a4 Ne7=) 7.Nf3 Nh4 8.Nh4 Qh4 9.d4= f6=.

6.Nf3 Nf5 7.Bd3 Ngh6 8.0-0 Be7 9.Ba3 c5=.

6.Nf3 Ng6= 7.a4 a6 8.Be2 Nf4 9.0-0 Ne7.

6.Nf3 Ng6 7.a4 a6 8.Be2 Nf4 9.0-0= Nh6=.

6.Nf3 Ng6 7.a4 Be7 8.Be2 Nf4 9.0-0 a6=.

6.Nf3 Ng6 7.Nc3 Nh4 8.a4 Bb4 9.a5 a6=.

6.a3 a6 (6...N8e7 7.Nf3 a6 8.Nc3 ab5 9.Bb5 Bd7=; 6...Nh6 7.Nf3 Nf5 8.d4 a6 9.ba6 ba6=) 7.Nf3 ab5 8.Bb5 Bd7 9.a4 c6=.

6.d4 a6 (6...N8e7 7.Nf3 a6 8.Bc1 ab5 9.Bb5 Bd7=; 6...Bb4 7.Bc3 Bc3 8.Nc3 Nh6 9.Qd2 0-0=; 6...Bd7 7.Nf3 N8e7 8.Bc1 c5 9.h4 h5=) 7.ba6 ba6 8.Nd2 Rb8 9.Rb1 c5=.

6.Nf3 a6 7.a4 Nh6 8.Be2 Nf4 9.0-0 Nf5.

6.Nf3 a6 7.ba6 ba6 8.c4 N8e7 9.d4 Rb8=.

6.Nf3 Qd7 7.Be2 Nf4 8.0-0 a6 9.a4 Ne7=.

6.Nf3 Bd7 7.a4 Nh6 8.Be2 Nf5 (8...Nf4 9.0-0 Nf5=) 9.0-0= Nf4=.

6.Nf3 Bd7 7.Nc3 Nh6 8.Be2 f6 9.d4 Nf4=.

6.Nf3 Bd7 7.d4 Bb4 8.Bc3 Be7 9.Bd2 a6.

6.Nf3 Be7 7.Be2 Nf4 8.0-0 a6 9.a4 ab5=.

6.Nf3 N8e7 7.Be2 Nf5 8.0-0 Nf4 9.Ba3 Ba3.

6.Nf3 N8e7 7.Be2 Nf5 8.0-0 Nf4 9.d4 a6=.

6.Nf3 Nh4 7.d4 Nh6 8.c3 N6f5 9.Ba3 Ba3=.

6.Nf3 Nh6 7.Be2 Nf5 8.0-0 Nf4 9.Ba3 Ba3=.

4.bc6 bc6 5.g3 Rb8 6.Qc1 Be7 7.Bg2 0-0 8.Nf3 d5 9.0-0 Ng4 10.h3 Nh6 11.e3 f6 12.Nd4 c5? (better 12...Rb6+-) 13.Nc6 Bb7 (13...Qd6 14.Nb8 Bb7+-) 14.Nd8 Rbd8 (14...Rfd8 15.Na3+-) 15.Na3 e5 16.Kh2 (16.c4 c6+-) 16…e4 1-0. unjournakamura (2395) - mahdiafshari63 (1915), Hourly Crazyhouse Arena, lichess.org, 2021.

4.bc6 dc6 5.e3 b6 (5...Bd6 6.Bc4+-) 6.c4 (6.Nf3 Bb7+-) 6...Bb7 7.Nf3 Qe7 (7...Bd6 8.Qc2+-) 8.Be2 0-0-0 9.0-0 c5 10.a4 a5 11.Nc3 h6 12.Nb5 Rg8 (12...Nd7 13.Rb1+-) 13.Qc2 Nd7 (13...c6 14.Na3 Qc7 15.Rfb1+-) 14.d4 (better 14.Qh7 e5 15.Qg8+-) 14...cd4 15.Nfd4 Nc5 (15...Kb8 16.Bf3 Bf3 17.Nf3+-) 16.Bf3 (better 16.Na7 Kd7 17.Ndc6 Qh4 18.Nd8 Kd8+-) 16...e5 (16...Bf3 17.Nf3 g6+-) 17.Nc6 Qg5 (17...Qe8 18.Nba7 Kd7 19.Bg4 Ne6 20.Ne5 Ke7 21.Qh7+-) 18.Nba7 (better 18.Bg4! Ne6 19.Nba7 Kd7 20.Ne5 Ke8+-) 18...Kd7 19.Rfd1 (19.Ne5 Ke6 20.Bb7 Nb7+-) 19...Bd6 20.Be5 (20.Nd8 Bf3 21.g3 Rd8-+ (21...Bd1?! 22.Rd1 Rd8 23.Ba3=)) 20...Qe5 (20...Bc6 21.Nc6 Kc8+-) 21.Ne5 (21.Ne5 Ke8 22.Qf5+-) 1–0. RichardSommer (2010) – nenecito (1985), lichess.org, 2020.

(--> 1.b4 d5 2.Bb2 e6).

3.a3 f5 4.e3 Nf6 5.Nf3 c6 6.c4 Bd6 (---> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

3.a3 f6 (--> 2.Bb2 f6 3.a3 d5).

3.a4 Bd7 4.e3 Nf6 5.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd7 5.a4).

3.a4 f5 4.e3 Nf6 5.b5 c6 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.a4).

3.b5 Bd7 4.a4 c6 5.e3 (---> 1.b4 d5 2.Bb2 e6 3.b5 c6 4.e3 Bd7 5.a4).

3.b5 f5 4.e3 Nf6 5.Nf3 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.Nf3 Nf6 5.b5).

3.b5 f6 4.e3 (--> 1.b4 d5 2.Bb2 e6 3.e3 f6 4.b5).

3.d3 Nf6 4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 d5 4.d3).

3.d4 Nf6 4.a3 (---> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.d4).

3.e3 a5 4.b5 c5 (---> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6).

3.e3 b6 4.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 d5).

3.e3 Bd7 4.b5 c6 (--> 1.b4 d5 2.Bb2 e6 3.b5 c6 4.e3 Bd7).

3.e3 f5 4.Nf3 Nf6 5.a3 c6 6.c4 Bd6 (---> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

3.e3 f6 4.a3 (--> 2.Bb2 f6 3.a3 d5 4.e3).

3.Nf3 a6 (--> 1.b4 d5 2.Bb2 a6 3.Nf3 e6).

3.Nf3 b6 4.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 d5).

3.Nf3 e6 4.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3).

3.f4 Nf6 4.a3 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.f4).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.a3).

4.e3 f5 5.Nf3 Nf6 6.c4 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

4.Nf3 f5 5.e3 Ngf6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Nbd7).

4.Nf3 Ngf6 5.d4 Be7 6.e3 0-0 7.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

(--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5).

4.d4 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.d4).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3).

4.e3 a5 5.b5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5).

4.e3 a5 5.b5 a4 (---> 1.b4 a5 2.b5 d5 3.Bb2 a4 4.e3 e6 5.a3 Nf6).

4.e3 a5 5.b5 c5 6.bc6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.bc6).

4.e3 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6).

4.e3 c5 5.bc5 Bc5 6.Nf3 0-0 7.d4 Bd6 8.c4 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6 8.c4 0-0).

4.e3 c5 5.bc5 Bc5 6.Nf3 Bd6 7.d4 0-0 8.c4 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6 8.c4 0-0).

4.e3 c5 5.bc5 Bc5 6.Nf3 Be7 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

4.e3 Bd6 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3).

4.e3 Bd6 5.Nf3 0-0 6.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.d4 0-0 6.e3).

4.e3 Be7 5.d4 0-0 6.Nd2 c6 7.c4 Nbd7 8.Ngf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7 8.Nbd2).

4.e3 Be7 5.Be2 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2).

4.e3 Be7 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3).

4.e3 Be7 5.g4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.g4).

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3).

4.Nf3 a5 5.b5 c5 6.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.Nf3).

4.Nf3 c5 5.bc5 Bc5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3).

4.Nf3 c5 5.bc5 Bc5 6.e3 0-0 7.Be2 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0).

4.Nf3 c5 5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.e3).

4.Nf3 Bd6 5.e3 Nbd7 6.c4 c6 7.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.Be2).

4.Nf3 Be7 5.d4 0-0 6.e3 c6 7.c4 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

4.Nf3 Be7 5.e3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

4.Nf3 Be7 5.g3 0-0 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.g3).

(--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6).

4.b5 Be7 5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.a4).

4.a4 ab5 5.ab5 Ra1 6.Ba1 c5 7.e3 Nf6 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

4.a4 ab5 5.ab5 Ra1 6.Ba1 Bd7 7.e3 Nf6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7).

4.a4 ab5 5.ab5 Ra1 6.Ba1 Nf6 7.e3 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7).

4.a4 Nf6 5.e3 Bd6 6.Nf3 b6 7.c4 Bb7 8.Be2 0-0 9.0-0 Nbd7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.c4 Nf6 5.e3 a6 6.a4 Be7 7.Nf3 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

4.bc6 Nc6 5.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.bc6 Nc6).

4.e3 a5 (---> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6).

4.e3 b6 5.a4 Bb7 6.Nf3 Nd7 7.c4 Ngf6 8.Be2 Bd6 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

4.e3 Nf6 5.c4 b6 6.d4 Bb7 7.Nf3 Nbd7 8.Be2 Bd6 9.0-0 0-0 10.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.e3 Nf6 5.Nf3 Bd6 6.Be2 0-0 7.0-0 Nbd7 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0).

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4).

4.a4 cb5 5.ab5 Bd7 6.e3 Nf6 (--> 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 cb5 6.ab5 Bd7).

4.a4 Bd7 5.e3 (---> 1.b4 d5 2.Bb2 e6 3.b5 c6 4.e3 Bd7 5.a4).

4.e3 Nf6 5.a4 (--> 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3).

4.a4 Ngf6 5.e3 Be7 6.c4 0-0 7.Nf3 c6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

4.e3 Ngf6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Nbd7).

4.Nf3 Ngf6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.b5 Nbd7).

(--> 1.b4 e6 2.Bb2 Nf6 3.b5 d5).

4.a4 c6 (---> 2.Bb2 Nf6 3.b5 c6 4.a4 d5).

4.a4 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 Bd6).

4.a4 Bd6 5.e3 0-0 6.c4 c5 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 Bd6 5.e3 Nbd7 6.c4 c5 7.Nf3 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 Bd6 5.e3 Nbd7 6.c4 c5 7.Nf3 0-0 8.Be2 b6 9.0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4).

4.a4 Bd7 5.e3 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd7).

4.a4 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 Nbd7).

4.c4 b6 5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.c4).

4.c4 dc4 5.e3 Be7 6.Bc4 0-0 7.Nf3 c6 8.a4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

4.c4 c6 5.e3 cb5 6.cb5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

4.c4 Bd6 5.e3 0-0 6.Nf3 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c6).

4.c4 Bd6 5.e3 0-0 6.Nf3 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0).

4.d4 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.d4).

4.c4 Be7 5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4).

4.c4 Be7 5.e3 0-0 6.Nf3 dc4 7.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

4.c4 Be7 5.e3 0-0 6.Nf3 Nbd7 7.Be2 c5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7).

4.c4 Be7 5.e3 dc4 6.Nf3 0-0 7.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

4.e3 a5 5.Nf3 Bd6 6.Be2 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3 Bd6 6.Be2).

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

4.e3 a6 5.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.c4).

4.e3 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6).

4.e3 c6 5.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3).

4.e3 c6 5.c4 cb5 6.cb5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

4.e3 c6 5.c4 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

4.e3 Bd6 5.c4 0-0 6.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4).

4.e3 Bd6 5.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0).

4.e3 Bd6 5.Nf3 0-0 6.Be2 Nbd7 7.0-0 c5 8.c4 b6 9.a4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

4.e3 Bd7 5.c4 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd7 5.c4 c6).

4.e3 Nbd7 5.c4 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7).

4.e3 Be7 5.Nc3 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Nc3).

4.e3 Be7 5.c4 0-0 6.Nf3 c5 (without 7.bc6) (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

4.e3 Be7 5.Nf3 c6 6.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Be7 6.Nf3).

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.b5).

5.e3 ab5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5).

5.e3 ab5 6.ab5 Ra1 7.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1).

5.e3 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

5.e3 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4).

5.e3 ab5 6.ab5 Ra1 7.Ba1 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6).

5.e3 ab5 6.ab5 Ra1 7.Ba1 Bd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7).

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7).

5.e3 Bd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd7).

5.e3 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

5.e3 b6 6.c4 Bb7 7.Nf3 Nbd7 8.Be2 Bd6 9.0-0 0-0 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 b6 6.Nf3 Bb7 7.Be2 Bd6 8.0-0 Nbd7 9.c4 0-0 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 b6 6.Nf3 Nbd7 7.Be2 Bd6 8.0-0 0-0 9.c4 Bb7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 Bd6 6.c4 0-0 7.Nf3 b6 8.Be2 Bb7 9.0-0 Nbd7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 Bd6 6.c4 0-0 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.e3 Bd6 6.Nf3 Nbd7 7.c4 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.e3 Nbd7 6.c4 b6 7.Nf3 Bb7 8.Be2 Bd6 9.0-0 0-0 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 Nbd7 6.c4 b6 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Bb7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.e3 Be7 6.c4 0-0 7.Nf3 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.e3 Be7 6.Nf3 0-0 7.c4 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.a4).

5.e3 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 Be7).

5.e3 c6 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Be7).

5.e3 c6 6.c4 dc4 7.Bc4 0-0 8.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.a4).

7.Nf3 a6 8.Nc3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3).

7.Nf3 cb5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 cb5).

7.Nf3 b6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 b6).

7.Nf3 dc4 8.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

5.c4 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.c4 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 Nbd7 9.d4 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

5.c4 b6 6.Nf3 Be7 7.a4 0-0 8.Be2 Bb7 9.0-0 Nbd7 10.cd5 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.cd5).

5.c4 Nbd7 6.Nf3 Bd6 7.a4 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.c4 Nbd7 6.Nf3 Bd6 7.a4 0-0 8.Be2 b6 9.0-0 Bb7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.c4 Be7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3).

5.Nf3 Be7 6.c4 0-0 7.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

4.a4 Nf6 5.b5 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

4.a4 Nf6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Bd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7).

4.Nf3 Nf6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3).

4.b5 b6 5.c4 Bb7 6.Nf3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

4.b5 Nf6 5.a4 Bd6 6.Nf3 0-0 7.c4 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.b5 Nf6 5.c4 Be7 6.Nf3 0-0 7.a4 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

(--> 1.b4 c6 2.Bb2 d5 3.e3 e6).

4.a4 a6 5.b5 (--> 1.b4 d5 2.Bb2 e6 3.b5 a6 4.a4 c6 5.e3).

4.c4 (--> 1.b4 c6 2.c4 d5 3.e3 e6 4.Bb2).

4.c4 f5 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.c4 c6).

4.c4 f5 5.Nf3 Nf6 6.a3 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

4.b5 Na5 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Na5 4.e3 e6).

4.b5 Nb8 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 e6).

4.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nd7 4.c4 e6).

4.Nf3 Ngf6 5.a3 c5 6.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7).

4.Nf3 Ngf6 5.a3 g6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Bd6).

4.Nf3 Ngf6 5.b5 b6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Nbd7 5.Nf3 b6).

4.Nf3 Ngf6 5.b5 b6 6.c4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Nbd7).

4.Nf3 Ngf6 5.b5 c5 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3).

4.b5 Nf6 5.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3).

4.c4 c6 5.a4 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.a4).

4.c4 Nf6 5.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3).

4.Nf3 Nf6 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.Nf3 e6 4.a3 d5 5.e3).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6).

4.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3).

4.a3 a5 5.b5 a4 (--> 1.b4 a5 2.b5 d5 3.Bb2 a4 4.e3 e6 5.a3 Nf6).

4.a3 a5 5.b5 c6 6.bc6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.bc6).

4.a3 a5 5.b5 c6 6.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 a5 6.b5).

4.a3 a5 5.b5 Bd6 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 Bd6 6.e3).

4.a3 b6 5.d4 Bb7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.d4).

4.a3 b6 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 b6).

4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nc6 8.d4 Bd6 9.Nbd2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6 8.Nbd2 0-0 9.c4).

4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nbd7).

4.a3 c6 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 c6).

4.a3 Bd6 5.c4 c6 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 0-0 6.c4 c6).

4.a3 Bd6 5.Nf3 c6 6.c4 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

4.a3 Bd6 5.f4 Nbd7 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.f4 0-0 6.Nf3 Nbd7).

4.a3 Nbd7 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).

4.a3 Nbd7 5.Nf3 c5 6.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7).

4.b5 a5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a5).

4.b5 a5 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5).

4.b5 Bd7 5.a4 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 Bd7).

4.b5 Bd7 5.c4 dc4 6.Bc4 c6 7.a4 cb5 8.ab5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 cb5 6.ab5 Bd7 7.c4 dc4 8.Bc4).

4.b5 Bd7 5.Nf3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 Bd7).

4.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6).

4.c4 c6 5.cd5 cd5 6.b5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

4.c4 Be7 5.b5 0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0).

4.c4 Be7 5.b5 0-0 6.Nf3 c5 7.Be2 b6 8.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.c4 0-0 6.Nf3 dc4 7.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

5.d4 0-0 6.c4 c6 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.d4 0-0 6.Nf3 b6 7.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 b6).

5.Nf3 0-0 6.c4 dc4 7.Bc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

5.c4 c6 6.d4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.d4 0-0 6.c4 c6 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.d4 0-0 6.Nf3 Nbd7 7.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3).

5.Nf3 0-0 6.c4 a5 7.b5 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a5).

5.Nf3 0-0 6.c4 Nbd7 7.d4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

5.a4 ab5 6.ab5 Ra1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1).

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3).

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3 0-0 9.c4 Nbd7 10.Be2 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2 Nbd7).

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7).

5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 Nbd7).

5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

5.a4 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 c6).

5.a4 Be7 6.Nf3 0-0 7.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

5.Nf3 ab5 6.Bb5 c6 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.e3 ab5 5.Bb5 c6 6.Be2 d5 7.Nf3).

5.c4 Bb7 6.Nf3 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Nbd7).

5.c4 Bb7 6.Nf3 Be7 7.a4 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0 8.a4).

5.Nf3 Bb7 6.c4 c5 7.Be2 Be7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.Nf3 Nbd7 6.c4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Nbd7).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5).

5.a4 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 c5).

5.a4 Bd6 6.Nf3 0-0 7.Be2 Nbd7 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

5.c4 b6 6.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

5.c4 b6 6.Nf3 Bb7 7.Be2 Nbd7 8.0-0 Be7 9.d4 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

5.c4 b6 6.Nf3 Be7 7.Be2 Bb7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.c4 Bd6 6.Nf3 0-0 7.Be2 Nbd7 8.0-0 b6 9.a4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.c4 Bd6 6.Nf3 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Bd6).

5.c4 Nbd7 6.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

5.Be2 Bd6 6.c4 0-0 7.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.Nf3 b6 6.c4 Bb7 7.Be2 Be7 8.0-0 Nbd7 9.a4 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7).

5.Nf3 b6 6.Be2 Bb7 7.0-0 Nbd7 8.a4 Bd6 9.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.Nf3 Bd6 6.c4 0-0 7.Be2 b6 8.0-0 Bb7 9.a4 Nbd7 10.a5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.a5).

5.Nf3 Bd6 6.c4 0-0 7.Be2 Nbd7 8.0-0 b6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6).

5.Nf3 Nbd7 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3).

5.Nf3 Nbd7 6.c4 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Nbd7).

5.Nf3 Nbd7 6.c4 Be7 7.d4 0-0 8.Nbd2 b6 9.Be2 Bb7 10.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2).

5.Nf3 Nbd7 6.Be2 Bd6 7.a4 b6 8.c4 Bb7 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

6.Nf3 0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

6.Nf3 0-0 7.Be2 a6 8.a4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

6.Nf3 0-0 7.Be2 b6 8.0-0 Bb7 9.Qc2 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.Qc2).

6.Nf3 0-0 7.Be2 b6 8.0-0 Nbd7 9.d4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7).

5.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3).

5.a4 a6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 c6).

5.a4 Bd7 6.c4 cb5 7.ab5 (--> 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 cb5 6.ab5 Bd7 7.c4).

5.a4 Bd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd7 5.Nf3 c6 6.a4).

5.c4 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

5.c4 Be7 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c6).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6).

5.a4 0-0 6.Nf3 Nbd7 7.Be2 c5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.c4 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4).

5.c4 0-0 6.Nf3 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c6).

5.c4 0-0 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0).

5.c4 c5 6.Nf3 0-0 7.Be2 Nbd7 8.d3 b6 9.Nbd2 Bb7 10.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2).

5.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

5.c4 Nbd7 6.Nf3 c5 7.d3 0-0 8.Be2 b6 9.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3).

5.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0).

5.Nf3 0-0 6.Be2 c5 7.c4 b6 8.0-0 Bb7 9.d4 Nbd7 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7).

5.Nf3 0-0 6.Be2 Nbd7 7.0-0 c5 8.a4 b6 9.c4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.Nf3 b6 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 b6).

5.Nf3 c5 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5).

5.Nf3 c5 6.c4 0-0 7.Be2 Nbd7 8.0-0 b6 9.a4 Bb7 10.d3 Qe7 11.Nbd2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2 Qe7 11.a4).

5.Nf3 Nbd7 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3).

5.Nf3 Nbd7 6.c4 c5 7.a4 b6 8.Be2 0-0 9.0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4).

5.Nf3 Nbd7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 Nbd7).

5.a4 c5 6.Nf3 b6 7.Be2 Bb7 8.0-0 Bd6 9.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.Nf3 a5 6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

5.Nf3 c5 6.Be2 Bd6 7.c4 0-0 8.0-0 b6 9.d4 Bb7 10.a4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

5.Nf3 Bd6 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3).

5.Nf3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 Nbd7).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 Nbd7).

5.c4 0-0 6.Nf3 c5 (without 7.bc6) (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

5.c4 0-0 6.Nf3 c6 7.a4 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

5.Nf3 0-0 6.c4 b6 7.Be2 Bb7 8.0-0 Nbd7 9.d4 c5 10.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.d4).

5.Nf3 0-0 6.Be2 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

5.Nf3 0-0 6.Be2 c5 7.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2).

5.Nf3 0-0 6.Be2 c5 7.0-0 b6 8.d3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5).

5.Nf3 0-0 6.Be2 c5 7.c4 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7).

5.Nf3 c5 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.Nf3 c5 6.c4 0-0 7.Be2 b6 8.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.Nf3 c5 6.c4 0-0 7.Be2 b6 8.d4 Bb7 9.Nbd2 Nbd7 10.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2).

5.Nf3 c6 6.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Be7 6.Nf3).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.Nf3).

4.e3 Nf6 5.a3 Be7 6.d4 0-0 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

(--> 1.b4 d5 2.Bb2 Nd7 3.Nf3 e6).

4.a3 Ngf6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7).

4.e3 Ngf6 5.a3 c5 6.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7).

4.e3 Ngf6 5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.c4 e6).

4.a3 Nd7 5.e3 Ngf6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Nbd7).

4.e3 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.Nf3).

4.e3 Nf6 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3).

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6).

4.a3 a5 5.b5 c6 6.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 a5 6.b5).

4.a3 c5 5.b5 b6 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3).

4.a3 c5 5.bc5 Bc5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3).

4.a3 c5 5.bc5 Bc5 6.e3 0-0 7.Be2 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0).

4.a3 c5 5.bc5 Bc5 6.e3 Nc6 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nc6).

4.a3 c5 5.bc5 Bc5 6.e3 Nbd7 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nbd7).

4.a3 c6 5.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3).

4.a3 Nc6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nc6 5.Nf3).

4.a3 Bd6 5.e3 0-0 6.c4 c5 7.bc5 Bc5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.e3 0-0 6.c4 c5 7.bc5 Bc5).

4.a3 Bd6 5.e3 c6 6.c4 0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 0-0 6.c4 c6).

4.a3 Nbd7 5.e3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7).

4.a3 Nbd7 5.g3 Be7 6.Bg2 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.g3 Be7 5.Bg2 0-0 6.Nf3 Nbd7).

4.b5 a5 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5).

4.b5 a6 5.a4 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Nbd7 6.Nf3).

4.b5 c5 5.e3 Bd6 6.Be2 0-0 7.0-0 b6 8.a4 Bb7 9.d4 Nbd7 10.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.b5 c5 5.e3 Nbd7 6.c4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

4.b5 c6 5.a4 Bd6 6.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Bd6 6.Nf3).

4.b5 c6 5.a4 Be7 6.e3 0-0 7.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6 7.a4).

4.b5 c6 5.e3 Bd6 6.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Bd6 6.Nf3).

4.b5 c6 5.e3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c6).

4.b5 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3).

4.b5 Bd6 5.e3 c5 6.c4 Nbd7 7.d4 0-0 8.Be2 b6 9.0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4).

4.b5 Bd7 5.e3 c5 (without 6.bc6) (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd7).

4.b5 Nbd7 5.a4 Bd6 6.e3 0-0 7.c4 c5 8.Be2 b6 9.0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4).

4.b5 Nbd7 5.e3 c5 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3).

4.b5 Be7 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3).

4.b5 Be7 5.e3 0-0 6.c4 c6 7.a4 a6 8.Nc3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3).

4.b5 Be7 5.e3 0-0 6.Be2 c6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6).

4.b5 Be7 5.e3 Bd7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 Bd7).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.Nf3).

4.e3 Be7 5.a3 0-0 6.d4 c6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.d4 0-0 6.e3 c6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.e3 0-0 6.c4 dc4 7.Bc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

5.e3 0-0 6.d4 c6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

5.e3 c5 6.bc5 Bc5 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

5.e3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

5.e3 Nbd7 6.c4 0-0 7.d4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

3.a3 c6 4.e3 Nd7 5.Nf3 Ngf6 6.d4 Be7 7.c4 0-0 8.Bd3 a5 9.0-0 ab4 10.ab4 Ra1 11.Ba1 b6 12.Qc2 d5 13.cd5 cd5 14.b5 h6 15.Ne5 Bb7 16.Nc6 Bc6 17.bc6 Bd6? (better is 17...Qa8 18.Bb2 Rc8+=) 18.cd7+- Qd7 19.Nc3 Rc8 20.Qb2 Ng4 (20...Qc7 21.h3+-) 21.h3 (21.Qb6?! Bh2 22.Kh1 Bc7+-) 21...e5 (21...Nf6+-) 22.hg4 e4 23.Bb1 Qg4 24.Qb6 Bc7 (24...Bb8 25.Qb7 Rd8 26.Nd5+-) 25.Qb7 Kh7 (25...Bb8 26.Nd5 Re8 27.Qc6+-) 26.Nd5 Qd7 (26...Bd6 27.Qf7 Kh8 28.Ne7 Be7 29.Qe7+-) 27.f4 Rb8 28.Qc7 (28.Qc7 Qc7 29.Nc7+-) 1–0. marekt – sureet_sk, ChessWorld.net, 2013.

3.a3 Nd7 4.Nf3 b6 5.e4 Bb7 6.d3 e5 7.Be2 g6 8.0-0 f6 9.Nbd2 Bg7 10.d4 Ne7 11.Bc4 d5 12.ed5 Bd5 13.Bd5 Nd5 14.de5 fe5 15.Ne4 Nf4 16.g3 Ne6 17.Qd5 Qe7?? 18.Qa8 Kf7 19.Qd5 Rd8 20.Nfg5 (20.Nfg5 Kg8 21.Ne6+-) 1–0. pierre – thegod882002, Yahoo, 2005.

3.a3 e5 4.e4 Be6 5.Nc3 Nf6 6.Nf3 a6 7.d4+= ed4 8.Nd4 Bd7 9.Bc4 b5 10.Bb3 Be7 11.0-0 c5 12.Nf3 c4 13.Ba2 Bg4 14.h3 Be6+= 15.Nd5 0-0 16.Ne7 Qe7 17.Re1 Nbd7= 18.Qd4 d5?? 19.ed5+- Nd5 20.Qg7# 1–0. Wall,Bill – LasVegas, chess.com, 2008.

3.a3 f5 4.e3 Nf6 5.Nf3 Be7 6.Nc3 e5 7.Bc4 e4 (better 7...a5=) 8.Bb3?? (better 8.Ng5 d5 9.Nd5 Nd5 10.Bg7 Bg5 11.Qh5 Kd7 12.Bd5+/-) 8...ef3-+ 9.Qf3 Bd7 (9...c6 10.Ne2-+) 10.Nd5? (10.Qb7 Nc6 11.Nb5 Rc8=) 10...Bc6 (10...c6!? 11.Ne7 Qe7-+) 11.Nf6 (11.Qf5 Nbd7=+) 11...Bf6-/+ 12.Qh5?? (better 12.Qf5 Nd7 13.d4-/+) 12...Kd7 (better 12...g6 13.Bf6 Qf6-+ (13...gh5?! 14.Bd8 Kd8 15.f3-/+)) 13.Qf7 (better 13.Qf5 Ke8 14.Qe6 Qe7 15.Qc8 Qd8 16.Qe6 Qe7 17.Qc8 Qd8 18.Qe6=) 13...Qe7 14.Be6 Kd8 15.Bf6 gf6 16.Qe7 Ke7 17.Bf5 d5 (17...Rg8 18.b5 Bg2 19.Bh7-+) 18.Bh3 (18.d4 a5 19.Kd2 Be8-/+) 18...d4 (better 18...Bd7-/+) 19.g4?? (better 19.ed4 Kd6 20.d3=+) 19...d3 (better 19...Bh1 20.ed4 h5-+) 20.f3 (20.Rg1 dc2 21.Rc1 Ba4-+) 20...Nd7 (20...dc2 21.Kf2-+) 21.0-0 (21.cd3 Ne5 22.Bg2 h5-+) 21...Ne5 22.e4? (22.cd3 Rad8 23.Bg2 Rd3 24.Rf2-+) 22...dc2 23.Rae1 (23.d4 Nd3 24.Rfc1 Nc1 25.Rc1-+) 23...c1Q! 24.Rc1 Be4?? (24...Rad8 25.f4 Nd3 26.Rc3 Be4 27.Rc7 Rd7 28.Rc4-+) 25.Rc3?? (better 25.fe4 c6 26.d4 Ng4 27.Bg4+/-) 25...Bf3 (25...Bc6 26.f4 Nd7 27.Re1 Kd8 28.Bg2 Bg2 29.Kg2-+) 26.Rcf3? (better 26.d4 Bd5 27.de5 fe5 28.Rc7 Kd6 29.Rg7=) 26...Nf3-+ 27.Rf3 Rhf8 (27...h5 28.d4-+) 28.Bg2-/+ Kf7 (28...c6 29.b5-/+) 29.Re3 (29.Rh3 Kg7 30.Bb7 Rae8=+) 29...Rfe8 (29...c6 30.b5 cb5 31.Rh3-+) 30.Rf3 (30.Bb7 Rad8 31.Bc6-/+) 30...Re2 (30...Rad8 31.d3 Rg8 32.Rg3-+) 31.Rf2 (31.Rh3 Rh8-/+) 31…Re1-+ (31...Re1 32.Rf1 Rf1 33.Kf1 c6-+) 0-1. TwelveTeen (2185) - MansNotHot (2130), Time forfeit, lichess.org, 2017. (=1.a3 d6 2.b4 e6 3.Bb2)

3.a3 f6 (---> 2.Bb2 f6 3.a3 d6).

3.a3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d6).

3.a4 Nf6 4.b5 Be7 5.c4 0-0 6.e3 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c6 10.Be2 cb5 11.cb5 d5 12.Nc3 (12.Bf6 Bf6 13.d4 Nd7=) 12...Nbd7 13.0-0 Nc5 14.d4 Nce4 15.Ne4 Ne4 16.Nd2 Nc3?? (better 16...Nd6=) 17.Bc3+- Bd7 18.Qa1 Qb6 19.Qa5 Qd6 (19...Qa5 20.Ba5 Rc8 21.Ra1+-) 20.Rb1 g6 (20...Qb8+-) 21.Bb4 (21.Bb4 Qb8 22.Be7+-) 1–0. BeepBeepImAJeep (2540) – bulkinadivane (2330), Lichess Titled Arena, 2018.

3.b5 a6 4.a4 a5 5.e3 b6 6.Qf3 Ne7?? (better 6...Ra7=) 7.Qa8+- c6 (7...Nd7+-) 8.Qb8 Bd7 (8...d5 9.Be5 Bd7 10.Qb7 cb5 11.Bc7+-) 9.Qd6 Nf5 10.Qd3 c5 11.Nf3 Qc8 (11...Nd6 12.e4+-) 12.Na3 Be7 (12...Qc7 13.Be2+-) 13.Nc4 (13.g4 Nh4 14.Nh4 Bh4 15.Bg7 Qb7+-) 13...Bd8 14.g4 0-0 15.gf5 ef5 16.Qc3 f6 17.Nd6 Qc7 18.Qc4 Kh8 19.Nf7 Rf7 20.Qf7 Bb5 (20...Qd6 21.Bc4 Qd2 22.Nd2 Be6 23.Qf8 Bg8 24.Qg8) 21.Qf8 1-0. DEFFM – GuestYPVB, freechess.org, 2021.

3.b5 b6 4.Nf3 Bb7 5.e3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 d6).

3.b5 d5 4.a4 f5 5.e3 Nf6 6.c4 Bd6 7.Nf3 c6 8.Be2 0-0 9.d4 Ne4 10.0-0 Nd7 11.Ne5 (11.Qb3 Qf6+=) 11...Ne5 12.de5 Bc5 13.Nd2 Qg5 14.Nf3 Qh6 15.Nd4 (15.Qc2 Bd7+=) 15...f4= 16.ef4 (16.Bc1 Nc3 17.Qd3 Ne2 18.Qe2 Qg6=) 16...Qf4=+ 17.Bf3 (17.Nf3 dc4 18.Qe1 a6 19.bc6 bc6=) 17...Ng5 (17...Nd2 18.Bc1 Qe5 19.Bd2 Bd4 20.Rc1-/+) 18.Nb3 (18.cd5 Bd4 19.Qd4 Nf3 20.gf3 ed5 21.Qf4 Rf4-/+) 18...Nf3-/+ (worse 18...Qc4 19.Be2 Qb4 A) 20.Nc5?! Qb2 (worse 20...Qc5 21.Ba3 Qc3 22.Bf8 Kf8 23.bc6+-) 21.bc6 bc6=; B) 20.Ba3 Qa3 21.Ra3 Ba3 22.Bd3+=) 19.Qf3 Qc4 20.Qg3 Qc2 (20...Rf2 21.Rf2 Bf2 22.Qf2 Qb3-/+) 21.Nc5=+ Qc5?? (better 21...Qb2 22.Nb3 cb5 23.ab5 Bd7=+) 22.Ba3+- Qd4 23.Bf8 Kf8 24.Rad1 (better 24.bc6!? bc6 25.Qa3 c5 26.Rfc1+-) 24...Qa4+- 25.bc6 bc6 26.Rc1 Bd7 27.Rb1 (27.Ra1 Qb4+-) 27...Rc8 (27...c5!?+=) 28.Rfc1 c5 (28...Kg8+-) 29.Qe3 (29.Ra1 Qc6 30.Ra7 Kg8+-) 29...d4 (29...Qc6 30.Ra1 Qb6 31.Rcb1=) 30.Qf3 (30.Qf4 Kg8 31.Ra1 Qc6 32.Ra7 Be8+-) 30...Kg8+= 31.Rb7 (better 31.Ra1!? Qb5 32.Ra7+=) 31...Bc6?? (better 31...c4=) 32.Qf7 (32.Qf7 Kh8 33.Qg7) 1-0. BeepBeepImAJeep (2605) - e_player (2170), lichess.org, 2017.

3.b5 Be7?? 4.Bg7+- Bf6 5.Bf6 (better is 5.Bh8 Bh8 6.d4+-) 5...Nf6+= 6.Nc3 c6 7.a4 Nbd7 8.e3 Qc7 9.d4 Nb6 (9...e5 10.Nge2+/–) 10.bc6 Qc6?? (better is 10...a6+/–) 11.Bb5+- 1–0. Sorokin,Sergey – Voronov,Kondrat, UKR–ch U12 sf, 2004.

3.b5 f5 4.a4 (4.e3 Nf6=) 4...Nf6 5.e3 Be7 6.c4 (6.Nf3 0-0=) 6...0-0=+ 7.Nc3 Bd7 (7...a6 8.d4=) 8.Nf3 a6 9.d4 ab5 (9...c6 10.Be2=) 10.ab5 Ra1 11.Qa1 c6 12.Be2 cb5 13.cb5 Qe8 14.0-0 Ne4 15.Ne4 (15.Qa5!?+=) 15...fe4= 16.Nd2 d5 (16...Bb5 17.Bb5 Qb5 18.Ne4=) 17.Qa5 Bd8 18.Qb4 (18.Qa8 Bb5 19.Bb5 Qb5=) 18...Be7 19.Qb3 Bd6 20.Ba3 (20.Nb1=) 20...Qe7 (better 20...Ba3 21.Qa3 Bb5 22.Bb5 Qb5-/+) 21.Bd6+= Qd6 22.Rc1 Qb6 23.Qc3 Rc8 (23...Qd8!?+=) 24.Qc8+- Bc8 25.Rc8 Kf7 26.Rb8 Qa5?? (better 26...Qc7 27.Rh8 Qc2 28.Bh5 g6+=) 27.Nf1 (27.Rb7 Kf6 28.Nf1 h6+-) 27...Qa1? (27...b6+-) 28.Rb7 Kf6 29.b6 Qb2 30.Ba6 (30.Rb8 Qe2 31.b7+-) 30...h5 (30...Qb4+-) 31.Rb8 Qb4 32.b7 Qb6 33.Rf8 (33.Rf8 Ke7 34.b8Q Qb8 35.Rb8+-) 1–0. BeepBeepImAJeep (2575) – mMartunia (2110), lichess.org, 2016.

3.b5 Nf6 (--> 2.Bb2 Nf6 3.b5 d6).

3.c4 a5 4.b5 c6 5.a4 d5 6.e3 dc4 7.Bc4 Nf6 8.Nf3 Be7 9.0-0 0-0 10.d4 cb5 11.ab5 Nbd7 12.Nbd2 Nb6 Black intends a4 13.Bd3 a4 14.Ba3 Nfd5 15.e4 (15.Ne5 Ba3 16.Ra3 Qe7+=) 15...Nf4= 16.Qb1 Bd7 17.Rc1 Ba3 18.Ra3 Rc8 (18...Nd3 19.Rd3 Qe8 20.Rc7+=) 19.Bf1 (19.Rc8 Qc8 20.Bf1 Qc7+=) 19...Rc1 (19...Qe7!? 20.Rc8 Rc8+=) 20.Qc1+= Qe7 (20...f5 21.Qc5+=) 21.g3 (21.Qc5 Ng6 22.Ra1+/- (22.Qb6?! Qa3 23.Qb7 Rd8=)) 21...Rc8 22.Qb2 Nh5 23.Ne5 Nf6 24.Nd7 Qd7 25.Rc3 (25.e5 Nfd5=) 25...Rc3 26.Qc3 Qe7 27.Qc5 Qc5 28.dc5 Nbd7 29.c6 b6?? (better 29...bc6 30.bc6 Nb6=) 30.cd7 (better 30.c7+-) 30...Nd7 31.Nc4 f6 32.f4 Kf8 33.Kf2 Ke7 34.Ke3 e5 (34...Kd8 35.Kd4+-) 35.fe5 fe5 36.Bg2 Nc5 37.Kd2 Nb3 (37...Nd7 38.Kc3+-) 38.Kc3 Nd4 (38...Na5 39.Nb6 a3 40.Bf1+-) 39.Kb4 (worse 39.Ne5 Nb5 40.Kb4 a3+-; 39.Nb6?! Nb5 40.Kb4 a3+-) 1-0. jhonores (2275) - hammdan_cadas (2275), Rated Blitz game, lichess.org, 2020.

3.c4 Bd7 4.e3 Nc6 5.a3 Qe7 6.Nf3 0-0-0 7.d4 h6 8.Nc3 Rh7 9.Bd3 g6 10.b5 Nb8 11.Qa4 a6 12.Qb3 a5 13.b6 c6 14.Qa4 c5 15.Nb5 Bb5 16.Qb5 Qd7 17.Qa5+- Qc6 18.Rc1 Kd7 19.Bc2 Ke7 20.0-0 f6?? 21.Ba4 Qe4 22.dc5 dc5 23.Qc5 Kf7 24.Qc7 Nd7 25.Qd8 Nc5 26.Qc7 Be7 27.Bc2 Qc6 28.Qc6 bc6 29.Bd4 Nd7 30.b7 Bc5 31.Bc5 f5 32.Bd6 Kf6 33.b8Q Nb8 34.Bb8 Rb7 35.Be5 Ke7 36.Rb1 Rd7 37.Rfd1 g5 38.Rd7 Kd7 39.Rb7 Kc8 40.Rc7 Kd8 41.Rc6 Kd7 42.Rd6 Ke7+- 43.Nd4 Nf6 44.Re6 Kf7 45.Rf6 Ke7 46.Rf5 Kd7 47.Rf6 Ke8 48.a4 Kd8 49.a5 Kc8 50.a6 g4 51.a7 Kb7 52.Rf7 Ka8 53.Bb8 h5 54.Nb5 h4 55.Nc7 Kb7 56.a8Q Kb6 57.Rf6 Kc5 58.Be4 Kc4 59.Rc6 Kb3 60.Qb7 Ka4 61.Ra6 1–0. Fournier,Frederic (1910) – solraksad, Active, 2011.

3.c4 h6 4.Nf3= Nd7 5.Nc3 c5 6.bc5 dc5 7.e3 Bd6 (7...Ngf6 8.Be2+=) 8.d4 (8.Nb5!? Bf8 9.Qa4+/–) 8...Qa5 (8...Ngf6!?=) 9.Bd3 cd4 10.ed4 Ngf6 11.0-0 e5? (better is 11...0-0+=) 12.Nb5+- Bb8 13.de5 Ng8 (13...Nh5 14.e6 Ndf6 15.ef7 Kf7 16.Ne5 Be5 17.Be5+-) 14.Nd6 Bd6 15.ed6 Ngf6 (15...Kf8+-) 16.Qe2 Kf8 17.Rfe1 (better is 17.Qe7 Kg8 18.Rfe1 Nf8+-) 17...Qd8 18.Rad1 Ng4 (18...Nc5+-) 19.Qe7 Qe7 20.de7 Ke8 21.Bg7 (21...Rg8 22.Bc3+-; better is 21.Nh4 Nge5 22.Be5 Ne5 23.Re5 Bg4+-) 1–0. Wall,Bill – Chunku, internet, 2003.

3.e3 c5 4.c3 cb4 5.cb4 d5 6.Nf3 Nf6 7.a3 a5 8.ba5 Ra5 9.Bc3 Ra8 10.Bb5 Bd7 11.Bd7 Qd7 12.0-0 Bd6 13.Bf6 gf6 14.Qb3 Nc6 15.Nc3 Rg8 16.g3 h5 17.h4 Ne5 18.Ne5 fe5 19.Qb5 Qb5 20.Nb5 Be7 21.Nc7 Kd7 22.Na8 Ra8 23.Rfb1 Rg8 24.Rb7 Kd6 25.Kh2 Kc5 26.Re7 Kc4 27.Rf7 Kd3 28.Re7 Kd2 29.Re6 Ke2 30.Rf6 d4 31.ed4 ed4 32.Ra2 Kd3 33.Rd6 Kc4 34.Rd2 Kb3 35.R6d4 Ka3 36.Rd5 Kb4 37.Rh5 Re8 38.Kh3 Kb3 39.Kg4 Rg8 40.Rg5 Rf8 41.Re2 Kc3 42.Re3 Kd2 43.Rf5 Rg8 44.Kf4 Ra8 45.h5 Ra4 46.Kf3 Ra6 47.g4 Rb6 48.Rd5 Kc1 49.Rc3 Kb2 50.Rdc5 Rf6 51.Kg3 Rd6 52.f4 Rd1 53.Kh4 Rf1 54.f5 Rg1 55.Kg5 Re1 56.h6 Re7 57.Rc7 Re8 58.h7 Rf8 59.Rc8 Rf7 60.h8Q Rg7 1–0. Phomopsis (1670) – hk1973 (1665), lichess.org, 2020.

3.e3 d5 4.Nf3 f6 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+-) 5.a3 Nh6 6.c4 dc4 7.Bc4 c6 8.0-0 b5 9.Be2 e5 10.Ne5 (better is 10.d4 e4 11.Nfd2+=) 10...fe5+= 11.Be5 Bb7 12.Bh5 Kd7 13.Bd4 (13.Qf3 Qe7 14.d4 Kd8=) 13...Qg5 (13...a5 14.Bg4 Ke7 15.Bf3+=) 14.f4 Qd5 (14...Qh4!?=) 15.Nc3+= Qc4 16.Be2 (16.d3 Qe6+=) 16...Qf7= 17.Ne4 c5? (better is 17...a5=) 18.Nc5 Bc5 19.Bc5 (19.Bb5 Kd8 20.Bc5 Nd7+-) 19...Qg6 (19...Bc6 20.a4!+/–) 20.Bf3 (20.Bb5!? Kd8 21.Qe2+-) 20...Bf3+/– 21.Qf3 Qc6 22.d4 (better is 22.e4!?+/–) 22...Qf3+= 23.Rf3 Nf5 (23...Re8 24.f5+=) 24.g3 (24.e4!? Nd6 25.e5+/–) 24...Re8+= 25.Re1 a5 26.e4 Nc6 (26...ab4 27.ab4 Ra4 28.g4+=) 27.Rd3 ab4 28.ab4 Nh6? (better is 28...Ra4 29.Rb3 Ra2+=) 29.d5+- Nd8 30.Kf2 (better is 30.e5+-) 30...Ng4+= 31.Kf3 Nh2 32.Kg2 Ra2 33.Kh3 g6?? (better is 33...g5!? 34.g4 gf4+=) 34.Rh1 (34.Bg1 Nf1 35.e5 Rd2+-) 34...Re4 (34...g5 35.e5 g4 36.Kh4+/–) 35.Rh2 Ra1 36.Kg4 h5 37.Kg5 Ra6 38.Rd4?? (better is 38.Kh6+-) 38...Nf7= 39.Kh4 g5 40.Kh5?? (40.Kh3 Rd4 41.Bd4 gf4 42.gf4 Rd6=) 40...Rh6 (better is 40...Rd4!? 41.Re2 Rd5 42.Re7 Kc8 43.Rf7 gf4 44.Kg4 fg3 45.Kg3 Ra1-+) 41.Kg4+= Rd4 42.Rh6?? (better is 42.Re2 Rd5 43.Re7 Kc6 44.Rf7 gf4 45.gf4 Rc5 46.bc5=) 42...Nh6-+ 43.Kg5 Rd5?? (43...Nf7 44.Kf6 Rd5-+) 44.Kh6+/– Ke6 45.g4 Rd2?? (better is 45...Kf6+=) 46.Kg6+- White prepares the advance f5 46...Rd8 47.f5 Ke5 48.f6 Rg8 49.Kf7 Rg4 50.Ke7 Rf4 (50...Kf5 51.f7 Rg7 52.Ke8 Rf7 53.Kf7+-) 51.f7 (better is 51.Bd6 Ke4 52.Bf4 Kf4 53.f7+-) 51...Kd5 52.f8Q Rf8 53.Kf8 Kc6 54.Ke8 Kc7 55.Ke7 Kc6 56.Ke6 Kb7 57.Kd7 Ka6 58.Be7 Kb7 59.Bd8 Kb8 60.Kc6 Kc8 61.Ba5 (better is 61.Kb5 Kd8 62.Kb6+-) 61...Kb8 62.Kb5 Kb7 (62...Ka8 63.Kc6 Ka7 64.b5 Kb8 65.b6 Ka8 66.b7 Ka7 67.Bb6 Kb8 68.Bc7 Ka7 69.b8Q Ka6 70.Qb6) 63.Kc5 Ka6 (63...Ka7 64.Kc6 Kb8 65.b5 Ka7 66.b6 Ka8 67.b7 Ka7 68.Bb6 Kb8 69.Bc7 Ka7 70.b8Q Ka6 71.Qb6) 64.b5 (64.Kc6 Ka7 65.b5 Kb8 66.b6 Ka8 67.b7 Ka7 68.Bb6 Kb8 69.Bc7 Ka7 70.b8Q Ka6 71.Qb6) 64...Kb7 (64...Ka5 65.b6 Ka6+-) 65.b6 Kc8 Black threatens to counter with Kb5 66.Kc6 Kb8 (66...Kd8 67.b7 Ke8 68.b8Q Ke7 69.Qe5 Kf8 70.Qf6 Ke8 71.Qg6 Ke7 72.Bb4 Kd8 73.Qg8) 67.Bc3 (67.b7 Ka7 68.Bb6 Kb8 69.Bc7 Ka7 70.b8Q Ka6 71.Qb6) 67...Kc8 (67...Ka8 68.b7 Ka7 69.Be5 Ka6 70.b8Q Ka5 71.Qb5) 68.b7 Kb8 (68...Kd8 69.Kd6 Ke8 70.Ke6 Kd8 71.b8Q) 69.Be5 Ka7 70.Kc7 (70.b8Q Ka6 71.Qb6) 70...Ka6 71.b8R (71.b8Q Ka5 72.Bc3 Ka4 73.Qb4) 71...Ka5 72.Kc6 Ka4 73.Kc5 (73.Bd6 Ka5 74.Ra8) 73...Ka5 (73...Ka3 74.Kc4 Ka2 75.Ra8 Kb1 76.Kd3 Kc1 77.Ra1) 74.Ra8 1–0. Darkseid – karlsdad, ChessWorld.net, 2013.

3.e3 Kd7 4.c4 Kc6?? (4...Nf6!?+/-) 5.Qc2 (5.Qa4 Kb6 6.Qb5) 5...b5? (better 5...Kd7!?+-) 6.cb5 Kd7 7.a4 (7.Nf3 Nf6+-) 7...Ke7 (7...Nf6 8.Nf3+-) 8.Nf3 f6 (8...Nf6 9.Be2+-) 9.h4 (9.Bd3 Kf7 10.Nc3 Ne7+-) 9...h5 (9...Bb7 10.Nc3+-) 10.Be2 (10.Nc3 Kf7+-) 10...Nh6 (10...Kf7 11.Nc3+-) 11.Nc3 Nf7 (11...d5 12.Nd4 Ng4 13.f3+-) 12.Ne4 (12.Nd4 Ke8 13.Ne6 Be6+-) 12...Rg8 (12...Bb7+-) 13.g4! hg4 14.Nh2 (14.Nd4!? Ne5+-) 14...f5 (14...Bb7 15.Rg1 f5+/-) 15.Ng5 (15.Ng3!?+/-) 15...Ng5 (15...Bb7 16.Rg1 Ng5 17.hg5+=) 16.hg5 Kf7? (16...Bb7 17.0-0 Nd7 18.Rac1+=) 17.f3 (better 17.Rc1!? Nd7 18.Ng4 (18.Qc7?! Qc7 19.Rc7 d5+=) 18...fg4 19.Qe4+-) 17...g3= 18.Ng4 (18.f4!? gh2 19.Rh2=) 18...fg4=+ 19.fg4 Qg5?? (better 19...g2 20.Rg1 Rh8=+) 20.Rf1+- Ke8 21.b6?? White prepares the advance b5 (better 21.Bf3 d5 22.Qh7+-) 21...c6 (21...g2 22.Bb5 Bd7 23.b7 gf1Q 24.Bf1 Qh4 25.Kd1-+) 22.b5?? (better 22.Bf3 g2 23.Bg2 Qh4 24.Kd1+/-) 22...c5 (22...g2 23.Qh7 gf1B 24.Kf1 ab6 25.Qg8-+) 23.d4?? (better 23.Bf3 Be7 24.Ba8 ab6 25.Qh7+-) 23...ab6-+ 24.dc5 Qc5 (better 24...g2 25.Rg1 Rh8 (25...dc5 26.Qh7 Nd7 27.Qg8 Qh4 28.Kd2=; worse 25...Qe3 26.Rg2 Rh8 27.Rf2 Rh1 28.Rf1 Rf1 29.Kf1 dc5 30.Qg6 Ke7 31.Bg7-+) 26.Rg2 Rh1 (26...Qc5?! 27.Qg6 Kd8 28.Bf6 Kc7 29.Bd4 Qb4 30.Kf2-+) 27.Bf1 d5-+ (27...Qe3?! 28.Re2 Qg3 29.Rf2 bc5 30.Qe4-+)) 25.Qg6 Kd8?? (25...Kd7 26.Rc1 Qb4 27.Bc3 Qc5 28.Qf7 Be7 29.Qg8 g2+- (29...Qe3 30.Bd2 Qc5 31.Rc5 dc5 32.Bc4 Kc7 33.Rf7 e5 34.Re7 Bd7 35.Bc3 Nc6 36.Rd7 Kd7 37.bc6 Kc6 38.Qe6 Kc7 39.Be5 Kd8 40.Bb5 Ra4 41.Qd7)) 26.Qf7?? (better 26.Rc1 Qb4 27.Bc3 Qa4 28.Qf7=) 26...Qb4-+ 27.Kd1 Qb2 (27...Qb3 28.Kc1 Qe3 29.Kd1 g2 30.Qg8 gf1Q (worse 30...gf1B 31.Qf8 Kd7 32.Bf1 Qb3 33.Kc1 Qe3 34.Kc2+=; worse 30...gf1R 31.Bf1 Nd7 32.Ra3-+) 31.Bf1 Nd7-+) 28.Rc1 Qb3 (better 28...Qc1 29.Kc1 Rh8-+) 29.Ke1 (29.Rc2 Qb1 30.Rc1 Qc1 31.Kc1 Rh8-+) 29...Nd7 (better 29...Qb4 30.Kd1 Nd7 31.Qg8 d5 32.Rf8 Qf8 33.Qf8 Nf8-+) 30.Bc4 (30.Qg8 Qb4 31.Kd1-+) 30...Qb2 (30...Qe3 31.Kd1 g2 32.Kc2 gf1R 33.Qf1 Ra4 34.Ra1-+) 31.Rd1 g2 (better 31...Qc3 32.Rd2 Ra4-+) 32.Rf2 (32.Qg8 Qc3 33.Kf2 gf1Q 34.Bf1 (34.Kf1?? Qc4 35.Ke1 Ra4-+) 34...Qf6 35.Ke2 Ra4 36.Bg2 Ra2 37.Rd2 Rd2 38.Kd2 Qf2 39.Kc3 Qe3 40.Kb2 Qf2 41.Kc3 Qg3 42.Kb2 Qg2 43.Kc3 d5 44.Qh8 d4 45.Kc4 Qc2 46.Kd4 Qd2 47.Kc4 Bb7 48.Qh4 Nf6 49.Qg5 Qc2 50.Kd4 Bb4 51.Qf6 gf6 52.g5 Qe4) 32...g1Q 33.Rf1 (33.Bf1 Qc3 34.Rdd2 Qc1 35.Ke2 Qg4 36.Rf3 Qgc4 37.Kf2 Q4f1 38.Kg3 Qce1 39.Rff2 Qg1 40.Kf4 Ra4 41.Rd4 Qef2 42.Ke4 Qe3) 33...Qe3 34.Be2 Qbd2! (34...Qbd2 35.Rd2 Rh8-+; 34...Qee2?!=; 34...Qbe2?!=) 0-1. odin_enkl1 (1725) - Lance5500 (2485), lichess.org, 2018.

3.e3 Qe7 4.b5 b6 5.Nf3 Bb7 6.Be2 h6 7.d4 Nf6 8.0-0 Nbd7 9.a4 g5 (9...a5 10.c4=) 10.c4 (10.a5 Bg7+=) 10...Bg7 11.a5 Ne4 (11...ba5!? 12.Ra5 a6+=) 12.a6+/- Bc8 13.Qc2 Nef6 14.Nc3 Nf8 15.e4 Ng6 16.e5 de5 17.Ba3 (17.de5 Nd7+/-) 17...Qd8 18.de5 Nd7 19.Rfd1 Nge5 (better 19...g4 20.Nd4 Nge5 21.Bg4 Qh4+/-) 20.Ne5+- Be5 21.Qe4 Rb8 22.Rd7! Bd7 (22...Bd7 23.Qe5 Remove defender; 22...Qd7 23.Qe5 Remove defender; 22...Kd7 23.Qc6 Mate attack) 23.Qe5 Rg8 24.Rd1 f6 25.Bh5 (25.Bh5 Rg6 26.Bg6) 1-0. wgr069 (2365) - archi444 (1995), Rated Rapid game, lichess.org, 2021.

3.e3 Be7 4.Bg7 Bd7 5.Bh8 Bf6 6.Bf6 Qf6 7.Nc3 Nc6 8.a3 0-0-0 9.Nf3 Nh6 10.g3 Ng4 11.Bg2 Nce5 12.Ne5 Ne5 13.0-0 Nc4 14.d3 Ne5 15.Ne4 Qf5 16.c4 Qg4 17.d4 Qf4 18.b5 Qg4 19.Qg4 Ng4 20.a4 f5 21.Nc3 c6 22.c5 dc5 23.dc5 Ne5 24.Rfd1 cb5 25.ab5 Kb8 26.c6 bc6 27.bc6 Nc6 28.Bc6 Kc7 29.Bd7 Rd7 1–0. Abdullaevich – teguhperdana, lichess.org, 2017.

3.e3 f5 4.Qh5 Kd7 (4...g6 5.Qd1 Nf6 6.Nf3=) 5.c4 Ne7 6.Qd1 Ng6 7.Nc3 h6 (7...e5 8.Be2+=) 8.h4 (8.d4+/-) 8...f4 (better 8...h5!?+=) 9.h5+- Nh4 10.ef4 e5?? (10...Be7+-) 11.g3 (11.Qg4 Ke8 12.Qh4 Nc6+-) 11...ef4? (11...Nf5 12.Qg4 Qf6+-) 12.Bh3 (worse 12.gh4 Qf6+-) 12...Kc6 (12...Ke8 13.Bc8 Ng2 14.Kf1 Qc8 15.Kg2 fg3 16.Qe2 Kd8+-) 13.Qa4 Kb6 14.Nd5 1-0. FeegLood (2690) - verygame01, lichess.org, 2015.

3.e3 Qg5 4.c4 Nd7 5.d4 Ngf6 6.Nd2 Be7 7.g3 0-0 8.Bg2 c6 9.Ngf3 Qg6 10.Nh4 Qd3 11.Nhf3 h6 12.Bf1 Qg6 13.Qb3 b6 14.Bd3 Qh5 15.0-0 Ng4 16.h3 Qh3 0–1. ArgosZgZ (1700) – farzad21 (1695), lichess.org, 2018.

3.e4 c5 4.bc5 dc5 5.Nf3 Nc6 6.e5 c4? 7.Bc4+/– Bc5 8.0-0 f6 9.ef6 Nf6 10.Ne5 Ne5+/– 11.Be5 0-0 12.Re1?? Nd5?? 13.Nc3?? Nc3 14.dc3? Qg5?? 15.Bg3 a6 16.Be6 Be6+= 17.Re6 Rad8 18.Qe1 Rd2 19.Re5 Bf2?? 20.Bf2+- Qf4 21.Re2 Re2 22.Qe2 Rf6 23.Re1 Kf7 24.Qe7 Kg6 25.Qe8 Kg5 26.Be3 (26.Be3 Kh6 27.Bf4 Rf4 28.Qe3 Kg5 29.Qe5 Kh6 30.Qf4 g5 31.Re6 Kh5 32.g4 Kh4 33.Qg3#) 1–0. Nautiluschess – stewrat, ICS blitz, 2001.

3.e4 Nc6 4.b5 Ne5 5.Be5 de5 6.Nf3 g5 7.Ne5?? (better is 7.Nc3 f6 8.Ng1=) 7…Qd4-+ (8.Nc3 Qe5-+) 0–1. bashful – WhiteMamba, caissa.com, 2004.

3.e4 Nd7 4.Nf3 h6 5.Nc3 Rh7 6.d4 g6 7.Bd3 Be7 8.0-0 Nf8 9.a3 Rg7 10.Bc4 g5 11.Re1 Ng6 12.a4 g4 13.Nd2 h5 14.Kh1 Nf4 15.Ne2+/– Ng6 16.Ng3 Rh7 17.Re3 Bg5 18.Rd3 Nf4 19.Re3 Ne7 20.c3 Neg6 21.Ne2 Ng2 22.Kg2 Be3 23.fe3 Qg5 24.Qg1 h4 25.Kh1 Bd7 26.Nf3 Qh5 27.Nd2 g3=+ 28.h3 e5 29.Qg2 0-0-0 30.Qf1 f5 31.b5 Rf8 32.Qg2 f4 33.ef4=+ Nf4 34.Nf4 ef4 35.Be2 Bh3?? 36.Qh3+- (36.Qh3 Kd8 37.Bh5 Rh5 38.Rf1+-) 1–0. mtra – 10000BRUCELEE, internet, 2002.

3.f3 Nd7 4.g3 Ngf6 5.e4 Be7 6.Nh3 0-0 7.Nf2 e5 8.Bg2 d5 9.ed5 Nd5 (better 9...Bb4 10.Nd3 Nd5-/+) 10.Be5?? (better 10.f4 Nb4 11.fe5=+) 10...Ne5-+ 11.0-0 (11.c3 a5 12.f4 Nc4-+) 11...Nb4 12.Ne4 (12.a3 Nbc6-+) 12...Nbc6 (better 12...Qd4 13.Nf2 Qa1 14.f4-+) 13.d4 (13.Nbc3 f5 14.Nf2 f4-+) 13...f5 (better 13...Qd4 14.Qd4 Nd4 15.Nbc3-+) 14.c4 (14.de5 fe4 15.f4-+) 14...fe4 15.de5 Qd1 16.Rd1 ef3 17.Bf3 (17.Bf1 Bg4 18.Rd3 Ne5-+) 17...Rf3 18.Kg2 (18.Rd5 Re3 19.Kf2 Re5 20.Re5 Ne5-+) 18...Bg4 (better 18...Re3 19.h3-+) 19.Nc3 (19.h3 Rg3! 20.Kg3 Bd1 21.Nc3-+) 19...Rc3 20.Rd5 Bf3 21.Kf2 Bd5 22.Re1 Bc5 (22...Rf8 23.Ke2 Bg5 24.Rd1 Bc4 25.Rd3 Bd3 26.Kd1 Rf1) 23.Kf1 (23.Re3 Be3 24.Ke1 Bc4 25.e6 Rc1) 23...Bc4 (23...Rf8 24.Ke2 Rf2 25.Kd1 Bf3 26.Re2 Be3 27.e6 Rc1) 24.Re2 (24.Kg2 Bd5 25.Kh3 Be6 26.Kg2 Rc2 27.Re2 Re2 28.Kf3 Rf2 29.Ke4 Nb4 30.h3 Bd5) 24…Rf8 (24...Rf8 25.Kg2 Be2 26.Kh3 Bf1 27.Kh4 Be7 28.Kh5 Be2 29.g4 Rf5; 24...Rc2 25.Kg2 Re2 26.Kh3 Be6 27.g4 Re3 28.Kg2 Bd5 29.Kf1 Rf8 30.Kg1 Re5) 0-1. svintus34 (1980) - opperwezen (2440), lichess.org, 2020.

3.Nf3 a5 4.b5 Nf6 5.d3 Be7 6.e4 e5 7.d4 Bg4 8.h3+= Bf3 9.Qf3 0-0 10.Be2 ed4 11.Bd4 c5 12.Bb2 d5 13.ed5+/– Qd5 14.Nc3 Qg5 15.Ne4 Qg6 16.Bf6 gf6 17.Ng3 Qc2? 18.Nf5 Re8 19.Qg3 (19.Qg3 Kh8 20.Qg7#) 1–0. Marre – sergiejew, zagraj.pl, 2003.

3.Nf3 a6 4.e4 Be7?? 5.Bg7+- Bf6 6.Bh8 Bh8 7.c3 b6 (7...Nf6 8.Qc2+-) 8.Be2 (8.d4 Bb7 9.Nbd2 Nf6+-) 8...Bb7 9.d3 Nh6 10.0-0 Nd7 11.a4 (11.Qd2 Qf6+-) 11...Qe7 (11...c5 12.bc5 bc5 13.Qd2+-) 12.Ra2 (12.a5 c5 13.bc5 bc5+-) 12...f5 13.ef5 Nf5 14.Nd4 (14.d4 c5+-) 14...Qg5? (better 14...Bd4 15.cd4 Nd4+-) 15.Bh5 Ke7 The mate threat is Qxg2 16.Nf5 (better 16.Bf3 Bf3 17.Qf3+-) 16...Kf6 (16...Qf5 17.f4 Rg8+-) 17.Ng3 Ke7 (17...Qd5 18.Ne4 Ke7 19.Rd2+-) 18.Bf3 Bf3 19.Qf3 Rf8 20.Qe3 (20.Qc6 Qd5 21.Qd5 ed5 22.Re1 Kf7+-) 20...Qg6 (20...Qe3 21.fe3 Rf1 22.Kf1+-) 21.Re2 e5 (21...Bg7 22.Rfe1 e5 23.Qd4+-) 22.d4 (22.f4 Kd8 23.f5 Qf7+-) 22...Kd8 23.de5 Be5 24.Ne4 Qh5 Do you see the mate threat? 25.Ng3 (better 25.Qg5 Nf6 26.Qh5 Nh5 27.g3+-) 25...Kc8?? (25...Qg6 26.Rfe1 Kc8+-) 26.Nd2 (better 26.Nh5 h6 27.Qd3+-) 26...Bg3 27.hg3 (27.fg3 Rf1 28.Kf1 Ne5+-) 27...Ne5 28.Nf3 (28.Qe4 Kb8+-) 28...Ng4 (28...Nf3 29.gf3 Qf3 30.Qf3 Rf3 31.Re3+-) 29.Qe7 (29.Qg5 Qg5 30.Ng5 h6+-) 29...Rf3 30.Qf8 (better 30.Qe8 Qe8 31.Re8 Kd7 32.gf3 Ke8 33.fg4+-) 30…Rf8 ½–½. aravind555 – bash0707, lichess.org, 2018.

3.Nf3 c5 4.a3 b6 5.e4 Bb7 6.Nc3 Ne7 7.d4 Qc7 (better 7...cd4!? 8.Qd4 Nbc6+=) 8.Nb5 Qd7 (better 8...Qc6 9.dc5 Nc8+-) 9.dc5 bc5 (9...Ng6 10.cd6 Na6+-) 10.Nd6 Kd8 (10...Qd6 11.Qd6 Nbc6+-) 11.Ne5 (11.Ne5 Kc7 12.Nd7 Nd7 13.Nb7+-) 1-0. PEREIRA – Adlai, internet, 2021.

3.Nf3 c6 4.c4 Nd7 (4...Nf6 5.d4=) 5.Nc3 e5 6.d4 ed4 7.Qd4 (7.Nd4 Ngf6+=) 7...Ngf6= 8.Ne4 Be7 (better 8...d5!? 9.Nf6 Nf6 10.cd5 Qd5=) 9.Nd6+- Bd6 10.Qd6 Ne4 11.Qf4 0-0?? (better 11...Ndf6 12.Ng5 Qe7+-) 12.Qe4+- Nf6 (12...c5 13.a3+-) 13.Qd3 (13.Qh4 Nd7+-) 13...Qb6 (13...Qe7 14.Rd1+-) 14.Bf6 gf6 15.a3 Bg4 (15...Rd8 16.c5 Rd3 17.cb6+- (worse 17.ed3 Qd8=+)) 16.e4 (16.c5 Qd8 17.Nd4 Re8+-) 16...Rad8 17.Qc3 (17.c5 Qc7 18.Qe3 Bf3 19.gf3 Qe5+-) 17...f5 (17...Rfe8 18.Nd2 Rd2 19.Kd2 (19.Qd2?! Re4 20.Be2 Re2 21.Qe2 Be2 22.Ke2 Qd4=) 19...Qf2 20.Kc1+-) 18.ef5 (18.h3!? Bh5 19.g4 fg4 20.hg4 Bg6+-) 18...Bf5 19.Be2 Rfe8 20.Nd4 (20.Ra2 c5+-) 20...Bc8?? (20...Qd4 21.Qd4 Rd4-/+) 21.c5 (21.Qg3!? Kf8 22.c5 Qa6+-) 21...Qc7 22.0-0 (better 22.Rd1+-) 22...Re2 (22...Rd4 23.Qd4 Re2+-) 23.Ne2 Bg4 24.Qg3 (24.Ng3 Qd7+-) 24...Qg3 25.Ng3 Rd3 (25...Kf8+-) 26.Rfd1 (better 26.Ne4 Kf8 27.h3+-) 26...Rd1 (26...Bd1!? 27.Nf5+-) 27.Rd1+- Bd1 28.Ne4 Bc2 (28...b5 29.cb6 ab6 30.Nf6 Kg7 31.Nd7+-) 29.Nd6 b5 30.cb6 (30.Nc8 Kg7+-) 30...ab6 31.Kf1 (31.Nc8!? b5 32.Ne7 Kg7 33.Nc6 f5+-) 31...Kf8 32.Ke2 Ke7? (32...Bb3 33.Kd3 Be6 34.a4+-) 33.Nc4 (33.Nc8 Kd7 34.Nb6 Kc7+-) 33...Ke6? (better 33...b5 34.Nb2 Bb3+-) 34.Nb6+- Kd6 35.Kd2 Be4 36.g3 f5 37.Kc3 h5 (37...Kc7 38.Na4+-) 38.Kd4 Kc7 (38...Bc2+-) 39.a4 (better 39.Nc4+-) 39...Kb6-/+ 40.h3 (40.Kc4 Bd5 41.Kc3 c5-/+) 40...Bg2 (40...Bc2!? 41.a5 Kb5-/+) 41.h4=+ Bd5 (41...Bf3 42.Ke5=+) 42.b5 (42.Ke5 Bb3 43.a5 Kb5 44.Kf5 Bc4= (44...Kb4 45.a6 Bd5 46.g4+-)) 42...cb5 (42...Ka5 43.bc6 Bc6 44.Ke5=) 43.Kd5 ba4 44.Kc4 Ka5 (44...Kc6 45.f3 Kd6=) 45.Kc3?? (better 45.f3 a3 46.Kb3=) 45...Kb5-+ 46.f3? (better 46.Kb2-+) 46...Ka5 (better 46...Kc5 47.Kc2 Kd4-+) 47.g4?? (better 47.Kc4 a3 48.Kb3=) 47...fg4-+ 48.fg4 hg4 49.h5 (49.Kd2-+) 49...g3 50.h6 g2 51.h7 g1Q 52.h8Q Qa1 53.Kc4 Threatening mate: Qxa1 53...Qh8 (53...Qh8 54.Kd5 a3 55.Ke4 a2 56.Kd5 a1Q 57.Kc6 Qe8 58.Kd5 Qae5 59.Kc4 Q8b5) 0–1. aravind555 – IssQem, lichess.org, 2018.

3.Nf3 Qe7 4.Nc3 d5 5.e3 Na6 6.a3+= h6 7.Ne5 f6?? 8.Qh5+- g6 9.Qg6 Kd8 10.Nf7 Ke8 11.Nh8 Kd7 12.Qg8 b6 13.Ng6 Bb7 14.Ne7 Ke7 15.Qh7 Ke8 16.Bb5 c6 17.Qb7 cb5 18.Qa8 Kd7 19.Nb5 Be7 20.Qa7 Kc8 21.Qe7 (21.Qe7 Kb8 22.Qa7 Kc8 23.Nd6 Kd8 24.Bf6) 1–0. Fournier,Frederic – beefcake08, Active (5/0), 2005.

3.Nf3 Be7?? 4.Bg7 Bf6 5.Bh8 Bh8 6.Nc3 d5 7.d4 Nd7 8.e3 Nb6 9.Bd3 c6 (9...Qe7 10.Rb1+-) 10.0-0 (10.Bh7 Nf6 11.Bd3 Nfd7+-) 10...Bd7 (10...Nf6 11.a3+-) 11.a4 Qc7 12.a5 Nc8 13.e4 Nce7 14.ed5 (14.e5 f6+-) 14...ed5 15.Re1 0-0-0 16.Ne5 Be6 17.a6 (17.b5 Be5 18.de5 d4+-) 17...b6 18.b5 c5 19.dc5?? (19.Nb1 c4 20.Bf1 Ng6+-) 19...bc5?? (better 19...Be5 20.cb6 ab6 21.Re5 Qe5+=) 20.f4 (20.b6!? Qb6 21.Rb1 Qa5+-) 20...c4 21.Bf1 (21.Bh7?! Nf6 22.Qd4 Nh7+/-) 21...Nf5 (21...Qb6 22.Kh1 Ng6 23.Na4 Qb5 24.Qd4+-) 22.Qf3 (22.Na4 Nf6 23.Rb1 Nd7+-) 22...Qc5 (22...Qb6 23.Qf2 Qf2 24.Kf2+-) 23.Kh1 Nd4 (23...Nh4 24.Qe2 Ng6 25.g3+-) 24.Qf2 Qb6 (24...Nb3 25.Qc5 Nc5+-) 25.Rad1 (25.Na4 Qb5 26.Qd4 Be5 27.fe5 Rd7+-) 25...Nc2 (25...Nf5 26.Qb6 ab6+-) 26.Qb6 (better 26.Qc2 Nh6 27.Na4 Qb5+-) 26...ab6 27.a7 (better 27.Re2 Be5 28.fe5 Nb4+-) 27...Kb7 28.Nc6 (28.Re2!? Nb4 29.Rb2 Nd3 30.Bd3 cd3 31.Rd3 Ne7+-) 28...Ra8+/- 29.Rc1?? (29.Re2 Na3 30.Nd5 Nb5 31.Re6 fe6+-) 29...Nd4?? (29...Ne1 30.Nb1 Bd7-+) 30.Red1 (better 30.Nd5!? Bd5 31.Nd4 Bd4 32.Rcd1+- (32.Bc4?! Bc4 33.Rc4 Bc5=)) 30...Nc6 31.bc6 Kc6 32.Nd5 Kb7?? (better 32...Bd5 33.Bc4 Bc4 34.Rc4 Kb5+=) 33.Bc4+- Bd5 (33...Ra7 34.Rb1 Ra5+-) 34.Bd5 Ka7 35.Ba8 Ka8 36.Rd8 Kb7 37.Rg8 Ka6 (37...Bb2 38.Rc2 Bd4 39.Rd8+-) 38.Rb1 (better 38.Ra8 Kb5 39.Rh8 h6+-) 38...Bf6 (38...Bd4 39.Ra8 Kb7 40.Rd8+-) 39.Rd1 (39.Rf8!? Bc3+-) 39...Bc3 40.Rd2! Kb5?? (40...Bd2 41.Rf8 Combination) 41.h3 (41.Rd7 f6+-) 41...Kc4?? (41...Bd2 42.Rg5 Kc4 43.Rf5+-) 42.Kh2 (better 42.Rd7 h5 43.Rf7+-) 42...Bd2 43.g4 (better 43.Rc8!? Kd3 44.g3+-) 43...Be3? (better 43...Bf4 44.Kg2 f6+/-) 44.Kg2 1-0. CronusCR (2235) - PlatonN (2085), Rated Bullet game, lichess.org, 2017. (=1.Nf3 e6 2.b4 Be7 3.Bb2 d6)

3.f4 b6 4.Nf3 Bb7 5.e3 Bf3 6.Qf3 c6 7.Bd3 Qh4 8.g3 Qe7 9.Nc3 Nd7? (better is 9...Nf6+=) 10.Qc6+- Rd8? (10...Qd8+-) 11.Nb5 f5 (11...Rb8 12.Nd6! Kd8 13.Nb7 Ke8 14.Be5 Rb7 15.Qb7 Ne5 16.Qb8 Qd8 17.Qe5+-) 12.Nc7 (worse is 12.Na7 Kf7+-) 12...Kf7 13.Ne6! Ke6 (13...Qe6 14.Bc4 Pinning (14.Bc4 Decoy); 13...Ke6 14.Bc4 Mate attack) 14.Bc4 1–0. b4_player – mikrus, casual, 2013.

3.g3 a6 4.Bg2 Nf6 5.Nf3 Nc6 6.a3 g6 7.0-0 Bg7 8.c4 0-0 9.d4 e5 10.d5 Ne7 11.Nfd2 h5 12.Nc3 h4 13.c5 h3 14.Bh1 Nh5 15.cd6 cd6 16.Bf3 Nf5 17.g4 (better 17.e4!? Nh6 18.Re1+/-) 17...Nh4= 18.gh5?? (better 18.e3 Nf3 19.Qf3=) 18...Qg5-+ 19.Kh1 Nf3 20.Rg1 Ng1 (20...Qg1?! 21.Qg1 Ng1 22.Rg1 gh5 23.Nce4-/+) 21.Qg1 Qd2 22.hg6 (22.Qc1 Qd4 23.f3-+) 22...Qb2 23.Ne4 (23.Qc1 Qc1 24.Rc1 Bf5 25.gf7 Rf7-+) 23...Bf5 (better 23...Qe2 24.Ng5 f6 25.Nh3 Bh3 26.Qg3-+) 24.gf7 Rf7 25.Nd6 Rd8 (25...Qe2 26.Qg3 Be4 27.Ne4 Qe4 28.Kg1-+) 26.Nf7 Kf7 27.Rc1 (27.Qf1-+) 27...Qe2 28.Qg5 Qe4 (28...Qf3 29.Kg1 Rc8 30.Rf1 Bg4 31.Qe7 Ke7 32.d6 Kd6 33.Rd1 Qd1) 29.Kg1 Qg4 (29...Qg4 30.Qg4 Bg4 31.Rc7 Kg8-+) 0-1. is_er_nog_hoop (2640) - buildorderbot (2640), Rated blitz game, lichess.org, 2023.

3.g3 Nf6 4.Bg2 Be7 5.Nf3 0-0 6.0-0 Bd7 7.d3 e5 8.Nbd2 Ne8 (8...a5 9.a3=) 9.e4 (9.d4 ed4 10.Nd4 Nc6=) 9...Nc6 10.a3 a5 (10...f5 11.ef5 Bf5 12.Qe2=) 11.b5+= Nb8 12.a4 c6 13.bc6 (13.c4 f5+=) 13...Nc6= 14.Nc4 b6 (14...f5 15.Rb1=) 15.Ne3 Qb8 (15...Nf6 16.d4=) 16.Nd5 Nc7 (16...Nf6 17.d4 Nd5 18.ed5 Nd4 19.Nd4 ed4 20.Bd4+= (20.Qd4?? Bf6 21.Qd3 Bb2-+)) 17.Nc7 (17.Ne7!? Ne7 18.d4 ed4 19.Nd4+/-) 17...Qc7= 18.Nd2 (18.d4 Rac8=) 18...Nb4=+ 19.Nc4 Nd5?? (better 19...Rac8=+) 20.ed5+- Bf5 (20...b5 21.ab5 Bb5 22.Na3+-) 21.Qe2 (21.Be5 de5 22.d6 Bd6 23.Ba8 Bc5+-) 21…Bc8 1-0. unjournakamura (2390) – felistime, Hourly Crazyhouse Arena, lichess.org, 2019.

3.Bg7?? Bg7 4.c3 Nf6 5.d4 0-0 6.f4 (6.Nf3 e5!-+) 6...c5! 7.e4 (7.bc5 dc5 Combination; 7.dc5 dc5 Combination) 7...cd4 8.e5 (8.Qd4 Qc7 9.Ne2 Nd5-+) 8...de5 9.fe5 Nd5 10.Nf3 (10.Qd4 Nc6 11.Qe4 Be5-+) 10...Nc3 (better 10...dc3!? 11.Bc4 Be5 12.Ne5 Qh4 13.g3 Qe4 14.Kf2 Qe3 15.Kg2 Qe5 16.Qg4 Kh8 17.Bd5 ed5 18.Qf3-+) 11.Nc3 dc3 12.Qd7 (12.Rc1-+) 12...Qd7 (12...Nd7 13.Rc1-+) 13.Rd1 Qc7 (13...Qa4 14.Bd3-+) 14.Rc1 c2 (better 14...Nd7 15.Be2-+) 15.Be2 Be5 (15...Qc3 16.Kf2 Bh6 17.Rce1-+) 16.0-0 Bd4! 17.Nd4 Qb6 18.Rc2 Qd4 19.Kh1 Nc6 (19...Qb4 20.Bd3-+) 20.Rc4 Qg7 (better 20...Qd2 21.Bh5-+) 21.Rg4 Ne5 (better 21...Qg4! 22.Bg4 Nb4 23.Rf2-+) 22.Rg7 Kg7 23.Bf3 (23.Rd1 Bd7-+) 23...Ng6 (23...Rd8 24.Kg1-+) 24.Be4 (24.Kg1 e5-+) 24...f5 25.Bf3 e5 26.b5 (26.a3 e4 27.Be2 Be6-+) 26...e4 27.Be2 Be6 28.Bd1 Rad8 (28...Ba2 29.Be2-+) 29.Bb3 Bb3 30.ab3 Rd2 31.b6 ab6 32.h3 b5 (32...e3!? 33.Re1 e2 34.Kh2-+) 33.Kg1 Rfd8 34.Rb1 Rc2 (34...e3 35.Kh2 Rd1 36.Rc1 Rc1 37.Kg3 Rd3 38.Kf3 Rf1 39.Kg3 e2 40.Kh2 e1Q 41.g3 Qg3) 35.b4 Rdd2 36.g4 (36.Ra1 Rg2 37.Kh1 Rh2 38.Kg1 Rcg2 39.Kf1 Nh4 40.Ke1 Rh1) 36...Rg2 (36...Ne5 37.Rf1 Rg2 38.Kh1 Rh2 39.Kg1 Rcg2) 37.Kf1 (37.Kh1 Rh2 38.Kg1 Rcg2 39.Kf1 Nh4 40.gf5 Rh1) 37...Nf4 (37...Rcf2 38.Ke1 e3 39.gf5 Rg1) 38.Ke1 (38.gf5 Rcf2 39.Ke1 Nd3 40.Kd1 Rd2) 38...Rce2 (38...Rg1) 39.Kd1 (39.Kf1 Nh3 40.gf5 Rgf2) 39…Rg1 0-1. CronusCR (2265) - koko2 (2140), Rated Bullet game, lichess.org, 2017.

4.ba5 Ra5 5.g3 Ra8 6.Bg2 Nc6 7.e3 Bd7 8.Ne2 Nf6 9.c4 Be7 10.0-0 0-0 11.Nbc3 e5 12.d3 Be6 13.Qc2 Qd7 14.Rfd1 Bh3 15.Bh1 h5 16.Rac1 h4 17.Nd5 hg3 18.hg3 Bg4 19.f3 Bh5 20.Bg2 Rfe8 21.Nec3 Nd8 22.Ne4 Ne4 23.de4 c6?? (better 23...Nc6+=) 24.Nb6+- Qe6 (24...Qc7 25.Na8 Qa5+-) 25.Na8 Qg6 (25...Qh6 26.Nc7 Qe3 27.Qf2 Qf2 28.Kf2+-) 26.Nc7 Rf8 27.g4 Bg4 28.fg4 Qg4 29.Qf2 (29.Qb3 Kh7+-) 29...Bh4 (29...Qc8 30.Nd5! cd5 31.cd5+-) 30.Qf3 Qg5 31.Na8 (31.Qh3 Qf6+-) 31...Ne6 (31...f5 32.Rf1 Bg3 33.Bh3 Bf4 34.Kh1 Be3 35.Rce1+-) 32.Nb6 f5 33.Qh3 (better 33.Rd6 Nc5 34.Nd7 Ne4 35.Nf8 Nd6 36.Be5+-) 33...f4 (33...Rf6 34.Nc8 Rh6 35.Nd6 Bg3 36.Qh6 Qh6 37.Nf5 Qg5+-) 34.Qe6 Kh8 35.ef4 Rf4 36.Rd3 (better 36.Rf1 Kh7+-) 36...Bf2 (36...Rf2 37.Qh3 Rb2+-) 37.Kh1 Rh4 38.Rh3 (38.Rh3 Rh3 39.Qh3 Qh6 40.Nc8+-) 1-0. Agnewfan (2465) - yamac123 (2315), Rated Bullet game, lichess.org, 2016.

4.b5 b6 5.e3 Bb7 6.Nf3 Nd7 7.Be2 Ngf6 8.0-0 Be7 9.c4 0-0 10.d4 e5 (10...c5 11.bc6 Bc6 12.Nc3=) 11.Nc3 (11.de5 de5 12.Ne5 Bd6 13.Nd7 Nd7+/-) 11...e4 (11...Re8 12.Qd2+=) 12.Nd2+/- Re8 13.Rc1 Bf8 14.a4 Qe7 15.Nb3 Rac8 16.c5 (16.Qd2!?+=) 16...dc5= 17.dc5 Nc5 18.Nc5 bc5 19.Bc4 h5 (19...Rcd8 20.Qb3=) 20.h3 Qe5 (20...Rcd8 21.Qe2=) 21.Qb3+= Qg5?? (21...Qe7 22.Ne2+=) 22.Ne2?? (22.Bf7 Kh8 23.Be8 Re8+-) 22...Rcd8?? (22...Bd5 23.Ng3+=) 23.Nf4?? (23.Bf7 Kh7 24.Be8 Ne8+-) 23...Bc8?? (better 23...Rd7!?+=) 24.Rfd1 (better 24.Bf7 Kh8 25.Bf6 Qf6 26.Nh5+-) 24...Rd1+/- 25.Rd1 (25.Qd1?! Bd6+=) 25...Re7 26.Bf6 Bf5?? (better 26...Qf6 27.Nd5 Qg6 28.Ne7 Be7+-) 27.Bg5 1-0. FeegLood (2790) - Seppo (2505), lichess.org, 2016.

4.e3 cb4 5.ab4 Nc6 (5...Nf6!?=) 6.b5+= Nb4 7.Nf3 Nd5 8.c4 Ndf6 9.Nc3 Nh6 10.Be2 e5 11.h3 d5 (11...Be7!?+=) 12.cd5 Nd5 13.Ne5 Nc3 14.Bc3 Nf5 (14...f6 15.Nf3+-) 15.b6! Be6? (15...ab6 16.Ra8 Pinning (16.Ra8 Deflection; 16.Bb5 Decoy); 15...Qb6 16.Qa4 Double attack) 16.Bb5 (better 16.Qa4 Ke7 17.ba7+-) 16...Bd7 (16...Ke7 17.Ra7 Ra7 18.ba7 Qa8+-) 17.Nd7 (better 17.Bd7 Ke7 18.Bb4 Nd6+-) 17...a6 (17...Be7 18.Qg4 Nd6 19.Ba4 ab6 20.Nb6 Ra4 21.Qa4 Kf8 22.Qg4+-) 18.Ba4 (18.Nf6 Ke7 19.Qg4 Qd2 20.Kd2 Rd8 21.Ke1 Rd4 22.Qf5 gf6 23.Bd4 Bg7 24.Qd7 Kf8 25.Qe8) 18...Bb4 (18...Qh4 19.g3 Ng3 20.Ne5 Kd8 21.Nf7 Ke7+-) 19.Bb4 Ne7 20.Qg4 (20.Ne5 Nc6 21.Nc6 Qb6 22.Qf3 Qc6 23.Bc6 bc6 24.Qc6 Kd8 25.Qd6 Kc8 26.Rc1 Kb7 27.Qc7) 20...f5 21.Qg7 (21.Ne5 Nc6 22.Qg7 Qd2 23.Bd2 Rc8 24.Qf7 Kd8 25.Qd7) 21...Rf8 (21...Nc6 22.Ne5 Qd2 23.Bd2 Rc8 24.Qf7 Kd8 25.Qd7) 22.Nf6 (22.Qf8) 1-0. FeegLood (2520) - kawsar78 (1615), lichess.org, 2015.

4.e4 Nc6 5.bc5 dc5 6.Bb5 Bd7 7.Nc3 Nf6 8.Nf3 Be7 9.0-0 a6 10.Be2 b5 11.d3 0-0 12.Qd2 a5?? 13.Nb5+/– Na7 14.Na7+- Ra7 15.Ne5 Ra8 16.Nd7 Nd7+/– 17.Rfb1 Qc7 18.Bc3 Bd6 19.g3 g6 20.Bf3 Ne5 21.Bg2+- Rab8 22.Ba5 Rb1 23.Rb1 Qc8 24.Bc3 h5 25.Be5 Be5 26.Qg5 Qc7 27.Bf3 Qd8?? 28.Qe5 (28.Qe5 Qd4 29.Qd4 cd4 30.e5+-) 1–0. Wall,Bill – GhettoBudo, Microsoft Gaming Zone, 1999.

4.Bc3 Nb4?? 5.e3?? (5.ab4!? Nf6+-) 5...Nc2?? (better 5...Nd5-/+) 6.Qc2+- d5 7.Qa4 Qd7 8.Qc2 Nf6 (8...Qd8 9.Nf3 c6+-) 9.Bb2 Be7 10.Nc3 0-0 11.Nf3 Ne4? (11...Qd8 12.Be2+/-) 12.Bd3 (12.Ne4 de4 13.Qe4 f6+-) 12...Nc3 (better 12...f5+-) 13.Bh7 (13.Bc3?! f5+-; 13.Qc3?! f6+-) 13...Kh8 14.Bc3 d4?! (14...c5+-) 15.Bg8 (better 15.Bd4 Bd6 16.Be4+-) 15...Rg8 (better 15...d3 16.Qb2 f6 (worse 16...Kg8 17.Bg7 Rd8 18.h4+/-) 17.Be6 Qe6=+) 16.Qh7?? (better 16.Bd4 Qd8 17.h4+/-) 16...Kh7-+ 17.Nd4 e5 18.Nf3 e4 19.Ne5 Bf6 (better 19...Qd5 20.f3 Bh4 21.g3 f6-+) 20.Nf7 (20.Nf7 Qd3 21.0-0-0-+). TwelveTeen (2185) - Aurorachess11, Time forfeit, lichess.org, 2017. (=1.a3 e6 2.b4 d6 3.Bb2)

4.Bc3 e5=.

4.e3 a5 5.b5 Nce7 6.g4 Ng6 7.h4 (7.h3 Nf6=) 7...h5 (7...Nh4!? 8.f4 e5=+) 8.g5= d5 9.Be2 e5 10.Bh5 e4 (10...N8e7 11.Nc3=) 11.Bg6 fg6 (better 11...Qg5 12.Bf7 Kf7=+) 12.Ne2?? (12.Nc3 Bf5+/-) 12...Ne7?? (better 12...Qg5! 13.d3 Rh4 14.Rh4 Qh4=+) 13.Nf4+/- Qd6 14.d3 ed3 15.cd3 Nf5 16.Nd2 (16.Nc3 c6+/-) 16...Be7 (better 16...Nh4!? 17.Ke2 Qd7+/-) 17.Nf3+- c6 (better 17...d4 18.Qc1 de3 19.fe3 c5+-) 18.Nd4?? (18.Be5!? Qd8+-) 18...c5? (better 18...Bg5 19.Nf5 Bf5 20.bc6 bc6 21.Bg7 Rh4 22.Rh4 Bh4=) 19.Nf5+- Bf5 20.Bg7 Rh7 21.Bb2 (better 21.Bh6+-) 21...Bg5+= 22.Qf3 (22.Ng2!?+=) 22...Bf4=+ 23.ef4 Kf7 (23...d4=) 24.Kd2?? (better 24.0-0-0+=) 24...d4?? (better 24...Be4! 25.Qg4 Bh1 26.Rh1 Qe6-/+) 25.Qb7+- Qd7 26.Qa8 Rh8 (26...Qb5 27.Kc1 Bd3 28.Qd5 Kf8+-) 27.Qh8 (better 27.Qa5 Rb8 28.a4+-) 27...Bd3 (27...Qb5 28.Bd4! Qd3 29.Ke1 Qe4 30.Be3 Qh1 31.Ke2 Bg4 32.Kd2 Qd5 33.Kc3 Bf5 34.Qh7 Kf6+-) 28.Rae1 Qg4 29.Qe5 (29.Qe8 Kg7 30.Re7 Kh6 31.Qh8) 29...Qf5 30.Qe7 (30.Qe8 Kg7 31.Re7 Qf7 32.Qf7 Kh6 33.Qh7) 30...Kg8+- 31.Qe8 (better 31.Qd8 Kg7 32.Re7 Qf7 33.h5 g5 34.Rg1 Kf6 35.Rd7 Qe7 36.Qe7 Kf5 37.Qe5) 31...Kh7 32.Re7 Qf7 33.Qf7 Kh6 34.Qh7 1-0. FeegLood (2495) - Arka50 (2455), lichess.org, 2016.

4.e3 Nf6 5.b5 Na5 6.Nf3 b6 7.c4 Be7 8.Nc3 0-0 9.Qc2 Bb7 10.Be2 d5 11.cd5 Nd5 12.Nd5 Bd5 13.d4 (13.0-0 c5+=) 13...f5 (13...c6!?=) 14.Bc3+= Nb7 15.a4 (15.0-0 c6+=) 15...Bd6 16.0-0 Qe7 17.Ne5 Be5 18.de5 Qg5 Threatening mate: Qxg2 19.f3 (19.g3 Rac8=) 19...Nc5 (better 19...Qe3!? 20.Kh1 c6=+) 20.f4?? (better 20.Bd4 Nb3 21.Ra3 Nd4 22.ed4+=) 20…Qg2 0–1. Markzela – hammurapi21, lichess.org, 2020.

4.c4 Nc6 5.e3 Nce7 6.Nf3 Ng6 7.d4 Nf6 8.Bd3 Be7 9.0-0 0-0 10.Nbd2 e5 11.de5+/– Ne5 12.Ne5 de5 13.Be5 Be6 14.Nf3 Ng4 15.Bb2 Nf6 16.Qc2 g6 17.Rad1 c6? 18.Nd4 Bd7 19.c5 Qe8 20.Nf3 Bd8 21.Rfe1 Bc7?? 22.h3 Nh5 23.Rd2 Ng7 24.Red1 Be6 25.Bc4 Bc4 26.Qc4 Qe6 27.Qe6 Ne6 28.Bf6 Ng7 29.Bg7 Kg7 30.Rd7 Bd8? 31.Rb7 Bf6 32.Rbd7 Rad8? 33.Rd8 Rd8 34.Rd8 Bd8 35.a4 Bc7 (35...Bc7 36.Nd4 Kf6 37.Nc6 Ke6 38.Na7 Kd5+-) 1–0. Fournier,Frederic – juanfra, Active, 2007.

4.e3 Be7?? 5.Nf3?? f6 6.d4 f5 7.Be2 e5? 8.de5+- de5 9.Ne5 Bf6? 10.Nd3 Bb2+/– 11.Nb2 Qf6 12.c3 b6 13.Qd4 Qd4 14.cd4 c5 15.dc5 bc5 16.bc5 Be6?? 17.Nd2 Nc6 18.Nbc4 Bc4 19.Nc4 Nf6 20.Nd6 Ke7 21.0-0 Rad8 22.Bb5 Ne4 23.Ne4 fe4 24.Bc6 Rd2 25.Be4 Rhd8 26.c6 Kd6 27.Bf3 Kc5 28.Rfd1 Rd1 29.Rd1 Rc8 30.Rc1 Kd6 31.g3 Rb8 32.c7 Rc8 33.Bg4 Ke5 34.Bc8 (34.Bc8 a6 35.Bg4 g6 36.c8Q Kf6 37.Qd8 Kg7 38.Rc7 Kh6 39.Qh4) 1–0. Fournier,Frederic – Amiennois, Active (2/0), 2004.

4.e3 Bd7 5.d4 Bf6 6.Nf3 e5 7.c4 ed4 8.ed4 c5 (8...Ne7 9.Nc3=) 9.bc5 (9.Nc3 Bg4+=) 9...dc5= 10.Be2 (10.Nc3 cd4 11.Nd4 Qa5=) 10...Nc6 11.0-0 cd4 12.Nd4?? (12.Nbd2 Bf5 13.Re1 Kf8=) 12...Nd4?? (12...Qb6 13.Ra2 Bd4 (13...Nd4?! 14.Bd4 Bd4 15.Rd2=+) 14.Bd4 Nd4-+ (14...Qd4?! 15.Rd2 Qb6 16.Rd7=)) 13.Bd4= Bd4 14.Qd4 Nf6 15.Bf3 Rb8 (15...Qc7 16.Nc3 0-0 17.Nd5 Nd5 18.cd5+= (18.Qd5?! Bc6 19.Qc5 Rac8=)) 16.Re1 Kf8 (16...Be6 17.Qa7 0-0 18.Rd1+/- (18.Bb7? Qc7-+)) 17.Qd6 (17.Qa7!? Bg4 18.Nd2+- (18.Bb7 Qc7=+)) 17...Kg8+/- 18.Nc3 Bc6 (18...Be6 19.Qf4+/-) 19.Qd8 Rd8 20.Bc6 bc6 21.Rad1 Rf8 (21...Rd1!? 22.Rd1 h6+/-) 22.Rd6 h6 23.Rc6 Kh7 24.Rd6 (24.Rc1 Rb8+-) 24...Kg6 (24...Rc8 25.Rd4+-) 25.Nd5 Kh7 (25...Rd8 26.Ra6+-) 26.Nf6 gf6 27.Rf6 Rhg8 (27...Kg7 28.Ra6 Re8 29.Rc1+-) 28.Rf3 (28.Re7!? Kg7 29.Rf4 a5+-) 28...Rg7 29.h3 Rfg8 30.Rg3! Rg6? (30...Rg3 31.fg3 Combination) 31.Rg5?? (31.Re7 Rg3 32.fg3 a5 33.Rf7 Kg6+-) 31...f6 (better 31...Rg5 32.Re7 Rg2 33.Kf1 Rg1 34.Ke2 Kg7 35.Ra7 Rh1-+) 32.Rg6 (32.Re7 Kh8 33.Rg6 Rg6 34.Ra7 f5+-) 32...Rg6 (32...Kg6 33.g4 Rc8+-) 33.Re7 Rg7 (33...Kg8 34.Ra7 Rg5 35.Ra4+-) 34.Re6 (34.Rg7 Kg7 35.Kh2 f5+-) 34...Rg6 (34...Kg6 35.Rc6+-) 35.Re3 (better 35.g4!? Kg8+-) 35...Rg7 36.Rf3 f5 (36...Rf7+-) 37.g4 (37.Rf5 Kg6 38.g4 Rc7+-) 37...Rf7?? (better 37...fg4 38.Rg3 h5+-) 38.gf5 (38.Rf5!? Rb7+-) 38...Rg7 (38...Kg7 39.f6! Kf8 40.Rf4+-) 39.Kh2 (better 39.Kf1+-) 39...Rg5 (39...Rc7 40.Rf4+-) 40.Rg3 (40.f6 Rg8 41.f7+-) 40...Rf5 41.f3 (41.Kg2!? Rc5 42.Rd3 Kg6+-) 41...Re5 (41...Rc5 42.Rg4 Ra5 43.a4+/-) 42.h4 (42.f4 Re4 43.Rc3 Rf4+-) 42...Re3 (42...Rc5 43.Rg4 Ra5 44.a4+/-) 43.Kh3 (43.f4 Re2 44.Kh3 Rc2+-) 43...Re2 (43...Ra3!? 44.f4 Ra4+/-) 44.Kg4 Re4?? (44...Rc2 45.f4 Rc4 46.Rd3+-) 45.f4 (45.fe4 Kg8 46.Kh5 Kf7 47.c5+-) 45...Re5?? (better 45...Rc4 46.Rd3 Ra4+-) 46.fe5 Kg7 47.Kf5 Kf7 48.e6 Ke7 (48...Ke8 49.Rd3 Ke7 50.Rd7 Ke8 51.c5 a6 52.c6 h5 53.c7 a5 54.c8Q) 49.Rg7 (49.c5 Kd8 50.Rd3 Kc8 51.e7 Kc7 52.e8Q a5 53.Qd7 Kb8 54.Rb3 Ka8 55.Qb7) 49...Ke8 (49...Kd6 50.c5! Kc6 51.e7 Kb5 52.e8Q Kc4 53.Qe4 Kc3 54.Rg3 Kd2 55.Rd3 Kc1 56.Qe2 a6 57.Rd1) 50.Rd7 a6 51.Kf6 a5 (51...h5 52.Rd5 a5 53.e7 a4 54.Rd8) 52.Rd6 Kf8 (52...a4 53.e7 h5 54.Rd8) 53.Rd5 (53.Rd8) 53…Ke8 (53...Ke8 54.e7 a4 55.Rd8; 53...Kg8 54.e7 Kh7 55.e8Q a4 56.Rd7). Narkotik_Kal (2720) - JOHNJEREDSON (1840), Hourly HyperBullet Arena, lichess.org, 2024. (=1.b4 d6 2.a3 e6 3.Bb2)

4.e3 Bf6 5.d4 c5 6.bc5 dc5 7.Nf3 Nc6 8.Bb5 Nge7 9.Nbd2 a6 10.Bc6 Nc6 11.Rb1 (11.Ne4!?=) 11...cd4=+ 12.ed4 Nd4 (worse 12...Bd4 13.Nd4 Nd4 14.Nc4=) 13.Ne4 Nf3 14.Qf3 Bb2 15.Rb2 Qa5 16.c3 (16.Rb4 0-0=+) 16...0-0 17.0-0 Qa3 18.Rb4 a5?? (better 18...Rd8-/+) 19.Nf6 Kh8 20.Rh4 h6 21.Qf4 Qc1 1-0. is_er_nog_hoop (2545) - solomon88 (2425), Rated bullet game, lichess.org, 2019.

4.c4 Nd7 5.e3 b6 6.Nf3 Bb7 7.Be2 e5 8.0-0 g6 9.d4 Bg7 10.de5 de5 11.Nbd2 0-0 12.Qc2 Qc8 13.Rad1 c5 14.b5 a6 15.a4 ab5 16.ab5 e4? (better is 16...f5!?=) 17.Bg7+/– Kg7 18.Ng5 Nf6 19.Nge4 Ne4 20.Ne4 Be4 21.Qe4 Nf5 22.Qc2 Qc7 23.g3 Nd6 24.Bf3 Rad8 25.Be2 Kg8?? (25...Ra8 26.Rd5 Rfd8+-) 26.Rd5+- Nf5 27.Rfd1 Rd5 28.Rd5 Rd8 29.Qd3 Rd5 30.Qd5 Ne7 31.Qd2 Nc8 32.Qd5 Nd6 (32...Ne7 33.Qa8 Kg7 34.Qa1 f6+-) 33.Bf3 Kg7 34.Be2 f5?? (34...Kg8 35.Kg2 Qe7+-) 35.Qe5+- Kg8 36.Qe6 Kf8 37.Qf6 (37.Qf6 Nf7 38.Bf3+-) 1–0. Fournier,Frederic (1800) – medea (1670), Active (1/1), 2005. — — Frederic Fournier was born in 1966. — — He is a French chess player with FIDE ID 637777, active in both over-the-board and online chess. His current FIDE standard rating is 1782, rapid rating is 1820, and he has no blitz rating listed. He holds no FIDE titles and is ranked around 82077 worldwide among active players, 5378 nationally in France, and 59229 in Europe. He has played hundreds of games, with a focus on club-level and team events. — — In terms of openings, he often employs uncommon or unorthodox systems. As white, he has used A00 lines such as the Van Geet opening with 1.Nc3 or other irregular starts, D05 Queen's Pawn Game variations, and C15 French Defense Winawer. As black, he also favors A00 uncommon openings and has analyzed and played the Philidor Countergambit (1.e4 e5 2.Nf3 d6 3.d4 f5). He has contributed articles on unorthodox openings like the Van Geet and Latvian Gambit, showing interest in surprising and aggressive repertoires. — — For tournaments, he has participated in French team championships, including the FRA-chT4 in the 2005-2006 season. He has also competed in online events, such as 1.b4-themed tournaments on chessworld.net and correspondence games on FICGS, where he has drawn or won in defenses like the Two Knights. His over-the-board activity includes club and national events in France, though specific recent tournament details are limited in public records.— — Note created January 2026. (AI)

4.e3 Nd7 5.Nf3 c6 6.h4 (6.Be2 e5+=) 6...b6 7.h5 h6 8.g4 (8.Be2 e5+=) 8...Bb7 9.g5 (9.Rg1 e5=) 9...f6 (9...a5 10.g6=+) 10.gh6 (10.Nd4 e5 11.Ne6 Qb8 12.gf6 gf6+=) 10...gh6 (10...Rh6 11.Nc3=) 11.Nh4 (11.Nd4 e5 12.Ne6 Qb8+=) 11...Bg7 (11...Rg8 12.Ng6=) 12.Ng6 (12.Qg4 Kf7=) 12...Ng6 13.hg6 Qe7 14.Qh5 0-0-0 15.Nc3 c5 (better 15...f5=) 16.0-0-0?? (better 16.Rg1+=) 16...cb4-/+ 17.ab4 a5 (better 17...Bh1!? 18.Qh1 Kb8-/+) 18.ba5 ba5 (18...Bh1 19.Qh1 d5 20.Ba6 Kb8 21.Qh2 Ka7 22.Be2=) 19.Qa5 (better 19.Rh4 f5 20.Rc4 Kb8 21.Be2=) 19...Nc5 (better 19...Bh1 20.e4 Nb8 21.Ba6 Na6 22.Qa6 Qb7 23.Qb7 Kb7 24.Rh1 Kc6=) 20.Nb5?? (better 20.Rh2 Qc7 21.Qc7 Kc7 22.Bg2+/-) 20...Qc7 (20...Bh1 21.Qb6 Rd7-+) 21.Qc7 1-0. FeegLood (2845) - NeoGR13, lichess.org, 2016.

4.e3 Nd7 5.Nf3 h6 6.Be2 b6 7.0-0 Bb7 8.c4 f6 9.Nc3 e5 10.d4 Ng8? (10...f5 11.de5 de5 12.Qc2+/-) 11.d5 (better 11.Nh4!? Qb8 12.Ng6+-) 11...Ne7+/- 12.Qc2 c6 13.Nh4 cd5?? (13...Qc7 14.Ng6 Ng6 15.Qg6 Kd8 16.dc6 Bc6 17.Nd5 Bd5 18.cd5+-) 14.Nd5 (better 14.Bh5 g6 15.Ng6+-) 14...Nd5?? (better 14...Bd5 15.cd5 Qc8+-) 15.Qg6 Ke7 16.Nf5 Ke6 17.Bg4 (better 17.Ng7 Ke7 18.Bh5+-) 17...h5 (17...Qc8 18.Rfd1 e4 19.cd5 Bd5 20.Rd5 Kd5 21.Qf7 Kc6 22.Rc1 Kb7 23.Qd5 Ka6 24.Be2 Qc4 25.Bc4 b5 26.Qb5) 18.Nh6 hg4 19.Qf7 1-0. FeegLood (2830) - MenA_Fadel (2020), lichess.org, 2015.

4.e3 Ng6 5.Nf3 Nd7 6.h4 h5 7.d4 (7.Nc3 Be7+=) 7...Nf6 (7...a5 8.Bd3=) 8.Bd3 Ne7 (8...Be7 9.Bg6 fg6 10.Qd3+=) 9.Ng5 Nf5 (9...d5 10.c4+=) 10.Qf3 (better 10.e4!? Nh6 11.Nc3+/-) 10...d5+= 11.Nd2 (11.c4 g6+=) 11...Be7= 12.e4 de4 13.Nde4 Nd4 (13...Ne4 14.Be4 Nd6 15.Bc1+=) 14.Bd4+= Qd4 15.0-0 0-0?? (better 15...a5=) 16.Nf6+- Qf6 17.Qh5 Qh6 18.Bh7 Kh8 19.Nf7 Rf7 20.Qf7 Kh7 21.Qe7 e5 (21...b6 22.Rad1+-) 22.Rae1 Bf5 (22...Qd6 23.Re5 Bg4 24.Rfe1 Qe7 25.Re7+-) 23.Re5 Bc2 (23...Bg6 24.Qc7 b6 25.Re7+-) 24.Qc7 Bg6 25.Rfe1 (25.Qb7 Rf8+-) 25...Rf8 26.Qc4 (26.h5!? Bf7+-) 26...Qd2 27.Qe2 Qf4 (27...Qe2 28.R1e2 b6 29.h5+-) 28.h5 Bd3 (28...Bf7 29.Qd3 Kg8 30.Rf5+-) 29.Qe3 (better 29.Qd3 Kg8 30.f3 Qf6+-) 29...Qc4 (29...Qe3 30.R1e3 Bc4+-) 30.Re7 Bc2 (30...Qc2 31.Qd4 Qf2 32.Qf2 Rf2 33.Kf2+-) 31.h6 Kg6 (31...Rg8 32.Qg5 Bg6+-) 32.Rg7 Kh5 33.Qg5 1-0. Gao,Raymond (2000) - Cramling Bellon,Anna (2115), Titled Tue (7), 2024. (=1.a3 d6 2.b4 e6 3.Bb2) — — Raymond Gao was born in 2006 in Canada and represents the Canadian chess federation. He holds the title of National Master and maintains a peak FIDE standard rating of 2088 along with a peak Canadian rating of 2279. At age 19 he has accumulated more than ten years of competitive playing experience and more than five years of coaching experience. He is based in Toronto Ontario where he studies commerce at McMaster University and serves as president of the non-profit chess club Chess4win which has over one hundred members of varying levels. In that role he has organized and managed five chess tournaments each drawing more than one hundred participants. — — His chess career includes regular participation in Canadian national events such as the Canadian Open Chess Championship where he has drawn against titled players and the Canadian Youth Chess Championship. He has competed in online and over-the-board youth sections and more recently captained McMaster University Team A at the 2026 Canadian University Chess Championship. Notable individual results include a tournament victory at the Zugzwang Chess Club event and an upset win as Raymond Gao rated 2051 against grandmaster Aleksandra Goryachkina rated 2546. His database record across several hundred games shows an overall win rate of approximately 32 percent with higher success when playing white. — — Gao has employed the uncommon opening A00 as white with solid results in that category and has also used the Sicilian Alapin variation B22. He has not been documented as exclusively favoring 1.b4 but the A00 classification encompasses flank and irregular first moves including the Sokolsky system. — — His playing style is characterized by a willingness to enter offbeat and uncommon positions early in the game rather than adhering strictly to main-line theory which leads to creative middlegame struggles. — — As a young active player his legacy consists of contributions to the Toronto chess community through coaching organizing tournaments and university team leadership which support the growth of chess at amateur and scholastic levels in Canada. — — Note created March 2026. (AI)

4.Nf3 Nd7 5.g4 (5.e4 a5=) 5...a5 6.g5 ab4 7.ab4 Ra1 8.Ba1 Nd5 9.b5 h6 10.c4 N5b6 11.Rg1 (11.gh6 Rh6 12.d3 e5=) 11...hg5=+ 12.Rg5 Nc4 (12...f6 13.Rg4-/+) 13.Bg7 Bg7 14.Rg7 Qf6 15.Rg3 Ndb6 16.e3 Bd7 (16...Qb2 17.Nc3=+) 17.Nc3= Ke7 18.Ne4 (better 18.d4=) 18...Qe5?? (better 18...Qb2 19.Bc4 Nc4-/+) 19.Ne5+- Ne5 20.d4 Nec4 (20...Ng6 21.Qg4 Nd5 22.Bc4+-) 21.Bc4 (21.Qg4 c6+-) 21...Nc4 22.Nd2 (better 22.Qg4 Be8+-) 22...Nb6 (22...Bb5 23.Qg4 Ba6 24.Qg5 Ke8 25.Ne4+-) 23.h3 (23.Qf3 Ra8 24.Qb7 Ra1 25.Ke2 Bb5 26.Kf3 Rc1+-) 23...Ra8 (23...Bb5 24.Qg4 Ke8 25.Qg5+-) 24.Qc2 Nd5 (24...Ra1 25.Nb1+-) 25.Nb3 Bb5 (25...Rc8 26.e4 Nf4 27.Qd2+-) 26.h4 (better 26.e4 Nf6 27.Qc7 Bd7+-) 26...c6 27.h5 (27.e4 Nf4+-) 27...Nb4 28.Qc3 (better 28.Qb1 Nd3 29.Kd2 Nf2+-) 28...Nd3 29.Kd1 (better 29.Ke2!? Nf4 30.Kf3 Ne2+-) 29...Nf2 30.Kc1 Ne4 31.Qe1 Ra3 (31...Ng3 32.Qg3 Bc4 33.Qg5 Kd7+-) 32.Kb2 (better 32.Rg2 Rb3 33.Qh4 Kd7+-) 32...Ra4 (32...Ng3 33.Ka3 Nh5 34.Qh4 Nf6 35.Nd2+-) 33.h6 (better 33.Rg4 Bd3 34.Qh4 Nf6+-) 33...Bc4 (33...Ng3 34.h7 Ra8 35.Qg3 Rh8+-) 34.h7 Ng3 35.h8Q Ne4 36.Qhh4 (36.Qeh4 Ng5 37.Qg5 f6 38.Qgg7) 36...Nf6 37.Qef2 Rb4 (37...Kd7 38.Qff6 c5 39.Qd8 Kc6 40.Qc8 Kb6 41.Qhd8 Ka6 42.Qd6 Ka7 43.Qcb8) 38.Qff6 Kd7 (38...Ke8 39.Qe7) 39.Qd8 1-0. black_bishop_88 (2525) - besdide (2575), lichess.org, 2020. (=1.a3 e6 2.b4 d6 3.Bb2 Ne7)

4.a4 Ngf6 5.e3 c6 6.c4 (6.Nf3 d5=) 6...cb5 7.cb5 Be7 8.Nf3 0-0 9.Be2 b6 10.0-0 Bb7 11.d4 h6 (11...Rc8 12.Nc3=) 12.Nc3+= Nd5 13.Rc1 (13.Nd5 Bd5 14.Bd3 f5+=) 13...Nc3 14.Bc3 Rc8 15.Nd2 Nf6 16.Bf3 Nd5 17.Bb2 Ba8 (17...Rc1 18.Qc1 Qd7 19.Qa1=) 18.Qb3 Nf6 19.Rc8 Qc8 20.Rc1 Qd7 21.Bc6 Bc6 22.Rc6 Rc8 23.Qc2 Rc6 24.bc6 Qc7 25.e4 (25.Ba3 Nd5+=) 25...d5 26.e5 (26.f3 Bb4 27.Nb3 Nd7-/+) 26...Ne8 (better 26...Nd7!?-/+) 27.Nb1 f6 28.Na3 (better 28.Ba3 Bd8 29.f4=) 28...fe5?? (better 28...Ba3 29.Ba3 fe5 30.de5 Qe5-/+) 29.Nb5+- Qc8 (29...Qd8 30.Qg6 a6 31.Qe6 Kh8 32.Na7+=) 30.Na7 (30.de5?! a6 31.Nd4 Nc7+=) 30...Qc7 31.Nb5 Qc8 32.de5 Nc7 (32...Bb4!?+-) 33.Nd6 (33.Bd4 Nb5 34.ab5 Bd8+-) 33...Qf8 (33...Qa6+-) 34.Ba3?? (34.Qg6 d4 35.Bd4 Qf4+-) 34...Qd8?? (better 34...Qf4 35.Qc3 Qa4+=) 35.g3 (better 35.Nb7 Qe8 36.Bd6+-) 35...Na6? (35...Qa8 36.Qg6 Qf8 37.Bb2+-) 36.Nb7 (36.Qg6 Qf8 37.Qe6 Kh7 38.Qd5 Nc7+-) 36...Qc7 (36...Qe8 37.Bd6 Bd8+-) 37.Bd6 Bd6 (37...Qc8 38.Be7 d4+-) 38.ed6 (38.Nd6?! Nc5 39.Qg6 Qc6+-) 38...Qd6 39.Nd6 (39.Nd6 Nc5 40.c7 Ne4 41.c8Q Kh7 42.Ne4 Kg6 43.Qe6 Kh7 44.Nf6 Kh8 45.Qcc8) 1–0. BeepBeepImAJeep (2450) – Eungblut (1920), lichess.org, 2018.

4.a4 Ngf6 5.e3 Be7 6.c4 0-0 7.Ne2 a6 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 Nc5 11.Qc1 (11.d4!? Nce4 12.Ne4 Ne4 13.Bd3+=) 11...e5 12.d4 ed4 13.f4?? (better 13.Bd4 Nb3 14.Qd1 Nd4 15.Qd4-/+) 13...Re8 (better 13...de3!? 14.Be2 Nb3 15.Qe3 Na1 16.Qc3-+) 14.Bd4 g5 (14...Nb3 15.Qd1 Nd4 16.Qd4-+) 15.Bb2? (15.fg5 Ng4 16.h4 Nb3-+) 15...Bf8 (better 15...gf4 16.ef4 Bf8 17.Kf2 d5-+) 16.Nd2?? (better 16.fg5 Ng4 17.Be2 Qg5 18.0-0-+) 16...Bg7 (better 16...gf4 17.Bd4 Bh6-+) 17.Ba3 (17.fg5 Ng4 18.Be2 Qg5 19.Ndf1 Bb2 20.Qb2 Re3 21.Ne3 Qe3 22.Qc2-+) 17...Nfe4 (better 17...Re3 18.Kd1 gf4-+) 18.Nh5?? (better 18.Nge4 Ne4 19.Ne4 gf4 20.Bd3 Qh4 21.Kd1 Qg4 22.Kc2-/+) 18…Kh8. BeepBeepImAJeep (2630) - skopje123 (2320), Rated Bullet tournament vbWrRv3t, lichess.org, 2015.

4.a4 d5 5.c4 c6 (5...dc4 6.e4=+) 6.e3 dc4 7.Nf3 cb5 8.ab5 Bd7 (8...Nd5 9.Bc4 Nb6 10.Be2+=) 9.Bc4+= Nd5 (9...Nf5 10.Nc3+=) 10.0-0 b6 (10...Nb6 11.Be2+=) 11.d4 (11.Ne5!? Qe7 12.Qf3+-) 11...Bd6+- 12.Nbd2 Bc8 13.Ne4 Bc7 14.Ba3 Nd7 (14...Bb7 15.Ne5 Nf6 16.Ng3+-) 15.Nd6 Bd6 16.Bd6 N7f6 17.Ba3 (17.Be5 Bb7+-) 17...Bd7 (17...a5!?+-) 18.Ne5+- h5 (18...Bc8 19.Bd3+-) 19.Qf3 a6 (19...Bc8 20.e4 Ne7 21.d5+-) 20.Bd5 (20.ba6!? b5 21.Bd5 ed5+-) 20...ed5 21.ba6 Ra6? (21...Bc8 22.Qg3 Rh7 23.Nc6+-) 22.Bb4 (better 22.Be7! Qc7 23.Ra6 Ke7 24.Qg3+-) 22...Ra1 (22...Bb5 23.Qg3 Rg8 24.Nc6 Bc6 25.Qe5 Kd7 26.Qd6 Kc8 27.Qc6 (27.Ra6?! Qd6 28.Bd6 Bb5 29.Rc1 Kb7+-) 27...Qc7 28.Qc7 Kc7 29.Ra6+-) 23.Ra1 Qb8?? (23...Be6 24.Qe2 Nd7 25.Nd7 Bd7 26.e4+-) 24.h3 (better 24.Qg3 Rg8 25.Nc4 Qg3 26.Ra8 (worse 26.fg3 dc4 27.Ra8 Bc8 28.Rc8 Kd7 29.Rc4 Ra8=+) 26...Bc8 27.Rc8 (27.fg3 dc4 28.Rc8 Kd7 29.Rc4 Ra8=+) 27...Kd7 28.Nb6 (28.hg3? Kc8 29.Nd6 Kd7 30.Nf7 Ng4-+) 28...Ke6 29.Rc6 (worse 29.fg3 Rc8 30.Nc8 Ng4+-) 29...Kf5 30.hg3+- (worse 30.fg3 Re8+-)) 24...g5?? (better 24...Be6+-) 25.Qf6 Qd8 (25...Qd6 26.Ra8 Bc8 27.Rc8 Qd8 28.Qd8) 26.Qf7 (26.Qh8) 1–0. BeepBeepImAJeep (2465) – rouademunte (1655), lichess.org, 2018.

4.a4 Nd7 5.e3 a6 6.Nf3 a5 7.c4 b6 8.Be2 Bb7 9.0-0 Nf6 10.d4 g6 (10...c6 11.Bd3+=) 11.Nc3 (11.c5 Bd5+/-) 11...Bg7 12.Nd2 0-0 13.Bf3 Qc8 14.Bb7 Qb7 15.Qf3 Qf3 16.gf3 (16.Nf3 Rac8+=) 16...Nd7= 17.Nb3 e5 (17...Rac8 18.Rac1=) 18.c5 (18.Nd5!? Nd5 19.cd5=) 18...ed4=+ 19.ed4 (19.cd6!? dc3 20.de7=+) 19...dc5-/+ 20.dc5 Rfe8 (20...bc5 21.Rad1 Rfd8 22.Rd2-/+) 21.Rad1 Rad8 22.Rfe1 Kf8 (22...Ne5 23.Re2 Rd1 24.Nd1 Nd5 25.Be5 Be5=+) 23.Re2? (better 23.Re7 Ke7 24.Nd5 Kf8 25.Bg7 Kg7 26.Nc7=+) 23...Nf5?? (better 23...Nc5 24.Nc5 bc5-/+) 24.Red2+/- Ke7?? (24...Nh4 25.Kf1 (25.Rd7 Rd7 26.Rc1 Nf3 27.Kf1 Nh2 28.Kg2 Ng4-+) 25...Nc5 26.Rd8 Nb3 27.Ba3 Nc5 28.Ne4 Rd8 29.Rd8 Ke7 30.Rd3+-) 25.c6?? (25.Nd5 Kf8 26.Nc7 Bb2 27.Ne8+- (27.Rb2?! Nc5 28.Rd8 Rd8 29.Nc5 bc5=; 27.Rd7?! Rd7 28.Rd7 Re1 29.Kg2 Nh4 30.Kh3 Nf3+-)) 25...Nc5 (25...Nf6 26.Ba3 Nd6 27.Na5 ba5+-) 26.Ba3?? (better 26.Nc5 bc5 27.Rd7 Rd7 28.Rd7 (28.cd7?! Rd8=) 28...Kf8 29.Rc7+/-) 26...Bc3 (26...Rd2 27.Rd2 Bc3 28.Rd7 Kf6 29.Bc5 bc5 30.Nc5-+) 27.Rd8 (27.Nc5 Bd2 (27...Rd2?! 28.Ne4 Bb4 29.Bb4 ab4 30.Rd2=+; 27...bc5 28.Bc5 Rd6 29.Bd6 Nd6 30.Rd6 cd6 31.b6+/-) 28.Nd7 Ke6 29.Rd2 f6-+) 27...Rd8 28.Rd8 Kd8 29.Nc5 (29.Bc5 bc5 30.Nc5 Nd4-+) 29...bc5 30.Bc5 Bb4 (30...Bd4 31.Ba3-+) 31.Kf1?? (31.Be3-+) 31…Bc5 0-1. Bostonbliz (2640) - TheMadSponge (2810), Casual bullet game, lichess.org, 2023.

4.d4 Bb7 5.Nf3 Be7 6.e3 Nd7 7.Bd3 Bh4 8.0-0 Bf6 0–1. bispo (2000) – capacuba (2295), net–chess.com, 2011.

4.d4 Ne7 5.Nf3 Bb7 6.Nc3 Nf5 7.e4 Ne7 8.Be2 Nbc6 9.Qa4 Qd7 10.b5 Na5 11.c5! dc5 (11...bc5 12.Qa5 Deflection; 11...dc5 12.dc5 Combination) 12.dc5 g6? (better is 12...c6+/–) 13.Rd1 Qc8 14.c6 Nec6 (14...Bc6 15.bc6 Bg7+-) 15.bc6 Bc6 16.Bb5 Qb7 17.Bc6 Nc6 18.Ne5 (18.Ne5 Bg7 19.Nc6+-) 1–0. b4_player – story, casual, 2013.

4.e3 d5 5.Nc3 Bb4 6.Qb3 Bd6 7.Nf3 Ne7 8.d4 f6 9.c5 Bc7 10.Bd3 a5 11.0-0 Nd7 12.Rab1 g6 13.Bc1 f5 14.Bd2 h5 15.Na4 Nf6 16.Nb6 Ng4 17.Na8 Bb8 18.Nb6 Ng8 19.Nc8 Qc8 20.Qb7 Bh2 21.Nh2 Qd8 22.Qc6 Kf8 23.Qe6 Qh4 24.Qd6 Kg7 25.Rb7 Kh6 26.Ng4 hg4 27.Qf4 g5 28.Qd6 Kh5 29.Qh2 Qh2 30.Kh2 Nf6 31.g3 Kg6 32.Kg2 a4 33.Rb6 Kf7 34.Rh1 a3 35.Rh8 Ke7 36.Rf6 Kf6 37.Rh6 1–0. atomico (1620) – ebolowa, kurnik, 2012.

4.e3 Nd7 5.Nc3 Ne7 6.Nf3 b5 7.cb5+/– cb5 8.Bb5 a6 9.Ba4 Bb7 10.0-0 g6? 11.Ne2 e5 12.d4 Bg7 13.de5 de5? 14.Be5 0-0 15.Bg7 Kg7 16.Qd7 Qd7 17.Bd7 Bf3 18.gf3 Nd5 19.a3 a5 20.ba5 Ra5 21.Nd4 Nb6 22.Bc6 Nc4 23.a4 Nd2 24.Rfc1 Kh6 25.Ra2 Rc8 26.Rd2 Kh5 27.Rdc2 Ra6 28.f4 Rb8 29.Bb5 Rd6 30.Rc7 Rf8 31.R1c6 Rd5 32.Rf6 g5 33.Rcf7 Rf7+- 34.Rf7 gf4 35.Rf4 Kg5 36.Rf5! Rf5 37.Nf5 Kf5 38.a5 Ke5 39.a6 Kd6 40.a7 Kc7 41.a8Q Kb6 42.Qc6 Ka5 43.Bc4 Kb4 44.Qb5 Kc3 45.Kf1 Kd2 46.Qb3 h5 47.Qd3 Kc1 48.Bb3 Kb2 49.Bd1 h4 50.Qb3 (50.Qb3 Ka1 51.Bc2 h3 52.Qa3) 1–0. Fournier,Frederic (1745) – KolaYre2ZeUs (1720), Active echecs21.com, 2004.

4.e3 e5 5.Nc3 Be7 6.Nf3 Nd7 7.d4 f6 (7...f5 8.Be2=) 8.Be2 Nh6 9.0-0 0-0 10.Qb3 d5? (better is 10...a5!?+=) 11.cd5+- cd5 12.Nd5 Kh8 13.Rac1 b6? (13...Bd6 14.e4+-) 14.de5 Ne5 15.Nc7 Rb8 16.Rfd1 Bd7 (16...Bd6 17.Nb5 Nef7+-) 17.Be5 fe5 18.Ne5 Bf6 (18...Bd6 19.Rd6 Qh4 20.Rh6 Qf2 21.Kh1+-) 19.Nd7 Qe7 (19...Rf7 20.Nb8 Qb8 21.Ne6+-) 20.Ne6 Rfe8 21.Nb8 Rb8 22.Rc7 Qc7 (22...Qe8+-) 23.Nc7 Rc8 24.Rd7 Nf5 25.Qe6 Be5 26.Qf5 Bc7 (26...Bc3 27.Bd3 g6 28.Qf7 Rc7 29.Qh7) 27.Bd3 Bd6 (27...Bh2 28.Kh2 g6 29.Qf6 Kg8 30.Qg7) 28.Qh7 1–0. Fritz 11 – anony, internet, 2013.

4.e3 Nf6 5.Nf3 Be7 6.Be2 0-0 7.0-0 Nbd7 8.a4 d5 9.c5 (9.Qb3 dc4 10.Bc4 Nd5=) 9...b6 (9...a5!?+=) 10.d4= a6 11.Nbd2 Bb7 12.Nb3 h6 (12...a5 13.Qc2=) 13.h3 (13.a5 bc5 14.dc5 Bc8+=) 13...Nh7 (13...a5!?=) 14.a5 b5 15.Bd3 f5 16.Nc1 Ndf6 17.Ne5 Qe8 18.Ne2 Nd7 19.Nd7 Qd7 20.Nf4 Qe8?? (better is 20...Rf6+/–) 21.Ne6+- Qd7 22.Nf8 Rf8 23.Qh5 Bc8 24.f4 (24.Rae1!? Nf6 25.Qf3 Qe6+-) 24...Qe6 25.Bc3?? (better is 25.Rf3+-) 25...Qe3-/+ 26.Kh1 Qd3 27.Rf3 Qc2 28.Re1 Nf6 29.Qg6 Rf7 30.Rg3? Ne4-+ 31.Re4 fe4 32.Qc6 Rf8 33.Qd5 Kh8 34.Qe5 Bf6 35.Qd6 Rg8 36.f5 e3 37.Re3 Qc1 (37...Qc1 38.Re1 Qc3-+) 0–1. Hal1958 – XANDERKIRV, playchess.de, 2003.

4.b5 Na5 5.e4 Nf6 6.Nc3 g5 7.d4 Bd7 8.e5 de5 9.de5 Ng8 10.Rc1 Ne7 11.Ne4 Ng8 12.g3 h5 13.Bg2 g4 14.Ne2 a6 15.a4 h4 16.h3 ab5 17.cb5 hg3 18.N2g3 gh3 19.Rh3 Rh3 20.Bh3 Bh6 21.Rc2 Nb3 22.Qg4 Kf8 23.Ba3 Ne7 24.Nf6 Bg7 25.Ngh5 Bf6 26.ef6 c5 27.Qg7 Ke8 28.Qh8 1–0. Ladeira,Paulo Ribeiro Soare – Gomez,Pablo, IECC, 2013.

4.b5 Nce7 5.d4 Ng6 6.e4 Be7 7.Bd3 Nf8 8.Nf3 Nd7 9.0-0 f6 10.a4 e5 11.Nc3 c6 12.de5 fe5+= 13.Qb3 Nf8 14.Rad1 Be6 15.Be2 Nh6 16.Ne5!+- Nf7 17.Nf7 Bf7 18.f4 Qc7 19.Kh1 Ng6 20.g3 0-0 21.Bh5 Qc8 22.Bg6 Bg6 23.f5 Bh5 24.Rd2 g6?? 25.Rdf2 g5 26.Ne2 Bf6 27.Bf6 Rf6 28.Nd4 c5 29.Ne6 Bf7? 30.Ng5 Kh8?? 31.Nf7 Rf7 32.Qd3 Qd7 33.Rd2 Re8 34.Qd6 Qd6 35.Rd6 Re4 36.f6 Rc4?? 37.Rd8 Rf8 38.Rf8 1–0. ludice (1735) – jartcampos, kurnik, 2011.

4.b5= Nce7 5.e4 e5 6.d4 ed4 7.Bd4 c5 8.Bc3+= Be6 9.Nd2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 f6 13.f4 Nh6 14.Bf6!+- gf6 15.Qf6 Nf7 16.Qe6 Bg7 17.Ngf3 0-0 18.g3 Bc3 19.Bg2 Kh8 20.0-0 Ng6 21.Bh3 Qb8 22.Bf5 Nd8 23.Qd7 Nf7 24.b6 Qa8 25.Be6 Nd8 26.Ng5 Bd4 27.Kg2 Bg7 28.f5 Ne5 29.Qd6 Ne6 30.fe6 Nf7?? 31.Rf7 Rd8 32.Rd7 Rc8 33.Qe7 (33.Qe7 Qa1 34.Rd8 Rd8 35.Qd8 Bf8 36.Qf8#) 1–0. Dopper,Johan – Szabo,M, corr SOK–92–91, 1992.

4.d4 a5 5.b5 d5 6.e3 Ngf6 7.Nf3 Bb4 8.Bc3 dc4 (8...0-0 9.Bd3=) 9.Bc4+= Nb6 10.Bd3 Nfd5 11.Bb4 ab4 12.0-0 b3 (better 12...0-0!?+=) 13.Qb3+- 0-0 14.a4 Nd7 15.Rd1 b6 16.Nbd2 Bb7 17.g3 (17.Rac1 f5+-) 17...Qf6 18.Rac1 (18.Qc2 Nb4 19.Qc7 Bf3 20.Nf3 Qf3 21.Qd7 Rfd8+-) 18...Ne3+/- 19.fe3 Bf3 20.Nf3 (20.Bh7 Kh7 21.Qc2 Qg6 22.Nf3 Qc2 23.Rc2 Ra4 24.Rc7 Nf6+/-) 20...Qf3 21.Rc7 Qe3? (better 21...Nf6 22.Re1 Ng4+/-) 22.Kg2+- Nf6 (22...g6 23.Rd7 Rad8 24.Rd8 Rd8+-) 23.Bh7! Kh7 (23...Nh7 24.Qe3 Discovered attack; 23...Kh7 24.Qe3 Discovered attack) 24.Qe3 Ra4 25.Rf1 Ra2 (25...Nd5 26.Qd3 Kg8 27.Rb7+-) 26.Kg1 Nd5 (26...Kg8 27.Qg5 Nh7 28.Qc1+-) 27.Qe4 Kg8 (27...f5 28.Qe6 Nc7 29.Qa2 Nb5 30.Qd5+-) 28.Rcf7! Rf7 (28...Rf7 29.Qe6 Double attack (29.Qe6 Decoy)) 29.Qe6 Nf6 (29...Raa7 30.Qe8 Kh7 31.Rf7 Nf6+-) 30.d5 (30.Qa2 Kf8 31.Qa8 Ne8 32.Re1 Re7 33.Qa3 Nf6 34.Qe7 Kg8 35.Re5 Kh7 36.Rg5 Ne8 37.Qf7 Nd6 38.Qg7) 30...Rd2 (30...Ra8+-) 31.d6 Kf8 (31...Rd4 32.Rc1 g5 33.Rc7 Rd1 34.Kf2 Nd7 35.Kg2 Rd2 36.Kh3+-) 32.Rc1 (better 32.Qc8 Ne8 33.Re1+-) 32...Ne8 (32...g5+-) 33.Rc8 Rd1 (33...Rg2 34.Kg2 Kg8 35.Re8 Kh7 36.Qh3 Kg6 37.Qg4 Kf6 38.Re6) 34.Kg2 Rd2 35.Kh3 g6 (35...Kg8 36.Re8 Kh7 37.Qe4 Rf5 38.Qf5 g6 39.Qf7 Kh6 40.Rh8 Kg5 41.Qf4) 36.Re8 (36.Qe8 Kg7 37.Qh8) 36...Kg7 37.Qe5 Rf6 (37...Kh6 38.Rh8 Rh7 39.Kg4 Rf2 40.Rg8 Rf5 41.Qe3 g5 42.Qe6 Rf6 43.Qf6) 38.Re6 (38.Re7 Kf8 39.Qf6 Kg8 40.Qg7) 38...Kh6 (38...Rdf2 39.d7 Kh7 40.Re7 Kh6 41.d8Q Rh2 42.Kg4 Rh4 43.Kh4 Rf7 44.Qeh8 Rh7 45.Qh7) 39.Rf6 (39.Qf6 Rh2 40.Kh2 Kh7 41.Qg6 Kh8 42.Re8) 39...Kh7 (39...Rg2 40.Qf5 Rh2 41.Kh2 Kg7 42.Qg6 Kh8 43.Rf8) 40.Rf7 Kh6 41.Qf4 (41.Qh8 Kg5 42.Qh4) 41...g5 42.Qf6 (42.Qf6 Kh5 43.g4) 1-0. jhonores (2245) - hammdan_cadas (2310), Rated Blitz game, lichess.org, 2020.

4.d4 Ne7 5.Nd2 g6 6.e3 Bg7 7.Qf3 0-0 8.Ne2 e5 9.b5 f5 10.a3 Nc5 11.dc5 e4 12.Qh3 Bb2 13.Ra2 Bg7 14.cd6 Qd6 15.Qg3 Qg3 16.hg3 Bd7 17.Nb3 b6 18.Rd2 Rad8 19.Nbd4 c5 20.bc6 Nc6 21.Nc6 Bc6 22.Nd4 Bb7 23.a4 Rd7 24.a5 Rfd8 25.ab6 ab6 26.Rb2 Bd4 27.ed4 Rd4 28.Rb6 Rd1 29.Ke2 R1d2 30.Ke3 Ba8 31.Be2 Rc2 32.Rd1 f4 33.Kf4 Rd1 34.Bd1 Rf2 35.Ke3 Ra2 36.Bb3 Rg2 37.Rb8 Kf7 38.Ba4 Rg3 39.Ke2 Rg2 40.Kf1 e3 41.Ra8 Rh2 (42.Re8 Rf2 43.Ke1 Ra2+-). kamret (2205) – Uitlaat, GameColony.com, 2003.

4.d4 Ne7 5.e3 Nf6 6.Be2 Ng6 7.Nf3 Be7 8.0-0 0-0 9.Nbd2 Bd7 10.Qb3 Qc8 11.Rac1 e5 12.de5 de5 13.Ne5 Ne5 14.Be5 Be6 15.Bf6 Bf6 16.Ne4 Be5 17.Nc5 Bf5 18.Bf3 c6 19.g3 b6 20.Nd3+/– Bf6 21.Nf4 Rb8 22.Rfd1 c5 23.b5 g5 24.Nd5 Bg7?? 25.Ne7 Kh8 26.Nc8 Rbc8 27.Rd5 g4 28.Rf5 gf3 29.Rf3 Be5 30.Rd1 f6 31.Qd3 Rg8 32.Qd7 Rcf8 33.Qa7 Rg7 34.Qb6 Rfg8 35.Qc5 h5 36.Rd5 h4 37.Re5 fe5 38.Qe5 Kh7 39.Qh5 1–0. ludice (1745) – milanbroz, kurnik, 2011.

4.e3 Ngf6 5.Nf3 e5 6.Be2 Be7 7.d3 0-0 8.Nbd2 c6 9.a3 d5 (9...a5 10.0-0=) 10.cd5 cd5 11.0-0 (11.Ne5 a5+/–) 11...e4 (better is 11...Bd6!?=) 12.de4+/– de4 13.Nd4 Qb6 (13...Ne5!?+=) 14.Qc2 Re8 15.Ne4 Ne4 16.Qe4 Nf6 17.Qc2 Bg4 18.Bd3 h6 19.h3 Bd7 20.Nf3 Qe6 21.Rac1 Rac8 22.Qb1 Rc6 23.Bb5?? (better is 23.Ne5 Rc1 24.Rc1+-) 23...a6?? (better is 23...Rc1 24.Rc1 Bb5-+) 24.Bc6+- Bc6 25.Nd4 Qe4 (25...Qd7 26.Nc6 bc6 27.Qc2+-) 26.Qe4 (better is 26.Nc6 bc6 27.Qe4 Ne4 28.Rc6 Ra8+-) 26...Be4 (26...Ne4?? 27.Nc6 bc6 28.Rc6+-) 27.f3 Bd3 28.Rfd1 Bg6 29.e4 Bd6 30.Nb3 Be5 (30...Bf4 31.Rc2+-) 31.Be5 Re5 32.Rc8 Kh7 33.Rc5 (33.Nc5 b6 34.Na6 Ne4 35.fe4 Be4+-) 33...Rc5 (33...Re7 34.Rd8+-) 34.Nc5 Ne8 35.Nb7 f5 36.Nd6 (better is 36.Nc5!? Nc7 37.a4 fe4 38.fe4 Be8+-) 36...fe4 37.Ne8 Be8 38.fe4 Bb5 39.e5 Kg6 40.Rd6 Kf5 41.g4 Ke5 42.Rd7 (42.Rg6 Kf4 43.Kf2 Ke5+-) 42...g6 (better is 42...Bd7 43.Kf2 Kf4-+) 43.Rh7+- h5 44.gh5 gh5 45.Rh5 Kd4 46.Rb5! ab5 47.h4 Ke5 (47...Kc4 48.h5+-) 48.Kg2 Kf6 49.Kg3 Kg6 50.Kf4 Kh5 51.Ke5 Kh4 52.Kd5 Kg3 53.Kc5 Kf3 54.Kb5 Ke3 55.Kc5 Ke4 56.b5 Kd3 57.b6 Kc3 Black threatens to counter with a4 58.b7 Kd3 59.b8Q Ke4 60.Qd6 1–0. Fournier,Frederic (1815) – renebrizuela (1680), Active, 2005.

4.g4 Ne7 5.e3 Rg8 6.h4 g6 7.Nc3 h6 8.Qc2 Bg7 9.Bg2 (9.d4 e5=) 9...a6 (9...Ne5 10.Ne4 N7c6 11.a3 Ng4 12.Bg7 Rg7 13.b5-/+) 10.a4 (10.g5!?=) 10...a5 11.b5 Rb8 (11...Ne5 12.Ne4 Ng4 13.Bg7 Rg7 14.f3=+) 12.h5 (12.g5 e5+=) 12...g5 (12...gh5 13.Rh5 Ne5 14.Ne4=+) 13.Nge2 (13.d4=) 13...b6 (13...Ne5 14.Nd1=+) 14.Ne4 (14.d4 Bb7 15.Bb7 Rb7+=) 14...Bb2= 15.Qb2 Kf8 (15...Bb7 16.Rg1=) 16.Rf1 (16.d4 Bb7 17.0-0 f5 18.gf5 Nf5+=) 16...f5 (better 16...Ne5 17.Qc2 Ng4=+) 17.f4 (17.gf5 Nf5 18.d4 Bb7+=) 17...gf4 (better 17...fe4!? 18.fg5 Ke8 19.gh6 e5-/+ (19...Rg4? 20.h7 Ne5 21.h8R Rg8 22.Rg8 Ng8 23.Kd1+-)) 18.Nf4= Ne5 19.Nf6 Rg7 (19...Nc4? 20.Qc3 Ne5 21.Ng8 Kg8 22.gf5 Nf5 23.Rg1+-) 20.d4 Ng4 21.Ke2?? (better 21.Ng4 Rg4 22.0-0-0=) 21...Nf6-+ 22.d5 (22.Rg1 Rg5-+) 22…e5 0-1. is_er_nog_hoop (2570) - francy29 (2605), Rated blitz game, lichess.org, 2019.

4.a4 Ng6 5.b5 (5.e4 a5=) 5...f6 (5...Nd7 6.Nf3=) 6.e3 Be7 (6...e5 7.d4=) 7.Nc3 0-0 8.Nf3 Nd7 (8...e5 9.Be2=) 9.Be2 e5 10.0-0 f5 11.d4 e4 12.Nd2 Nf6 13.f4 (13.f3 ef3 14.Bf3+=) 13...Ng4 (better 13...c5!?=) 14.Bg4+- fg4 15.Nde4 Bf5 (15...a6!?+-) 16.Ng3+- Nh4 17.Nf5 Nf5 18.Qe2 (18.Qg4!? Qe8+-) 18...g3+- 19.h3 Bh4 (19...c6 20.Qd3+-) 20.Nd5 (20.Qd3!?+-) 20...c6+- 21.Nc3 Qe7 22.Rae1 Rfe8 (22...Bf6!?+-) 23.Qd3+- Nh6 24.e4 Qf6 25.e5 (25.Rf3 Qf7+-) 25...de5 26.fe5?? (better 26.de5 Qe7 27.Ne4+-) 26...Qe6?? (better 26...Qf2! 27.Kh1 Qb2=) 27.Ne4 (27.d5 cd5 28.cd5 Qb6 29.Kh1 Rac8+-) 27...Rad8 28.Nd6?? (better 28.bc6 bc6 29.Rf4 Be7+-) 28...Re7?? (better 28...Rd6 29.d5 cd5 30.ed6 Qe1 31.Qd5 Kh8=) 29.d5 cd5 (29...Rd6 30.bc6 (30.de6? Rd3 31.bc6 bc6-+; worse 30.ed6 Qd6 31.Qc3 Qg6+-) 30...bc6 31.Qf3+- (31.de6? Rd3 32.Rf4 Bg5-+; 31.ed6 Qd6 32.Qc3 Qd8+-)) 30.cd5 Rd6 (30...Qd7 31.Re4 Bg5 32.Qg3+-) 31.ed6 (31.de6? Rd3 32.Rc1 Rd8-+) 31...Qe1 32.de7 Qe7 33.d6 (better 33.Ba3!? Qd8 34.Rf8 Qf8 35.Bf8 Kf8+-) 33...Qd7 (33...Qe6+-) 34.Qd5 (34.Qd5 Nf7 35.Re1+-; better 34.Qc4 Nf7 35.Qh4 Qd6+-) 1–0. BeepBeepImAJeep (2470) – Diamond_Dave (1930), lichess.org, 2017.

4.e3 Nd7 5.d4 b6 6.Nf3+= g6 7.d5 e5 8.Nc3 Bg7 9.Bd3 0-0 10.0-0 Bb7 11.Qd2 Rc8 12.e4 c5 (12...c6!?+=) 13.Nb5+/– Nf6 14.Na7 Ra8 15.Nb5 Ba6 (15...Nh5!?+/–) 16.a4+- Bb5 17.ab5 Qd7 (17...Ra1 18.Ra1 Nd7 19.Bc3+-) 18.Ra6 Rab8 (18...cb4 19.Rfa1 Rab8 20.Qb4+-) 19.bc5 bc5 20.Rfa1 Nh5 21.g3 f5 22.Ng5 (22.Qe2 fe4 23.Be4 Nf6+-) 22...Bh6 23.Ra7 Qe8 (23...Qd8 24.h4+-) 24.h4 f4 (24...fe4 25.Be4 Nc8 26.R7a6+-) 25.Ne6 Rf7 (25...Nc8 26.Rc7+-) 26.g4 Nf6 (26...Ng7 27.g5 Nc8 28.Rf7 Kf7 29.Nf4 Bg5 30.hg5 ef4 31.Qf4 Kg8 32.e5+-) 27.g5 Ne4 (27...Bg7 28.gf6 Bf6 29.h5+-) 28.Be4 Bg7 (28...Bf8 29.h5!+-) 29.R7a6 Nf5 (29...Qd7 30.Qd3+-) 30.Bf5 Rf5 31.Rd6 f3 (31...Bf8 32.Rda6 h6 33.Nf8 Kf8+-) 32.Ng7 Kg7 33.Re6 Qf7 34.Re5 Re5 35.Be5 Kg8 36.Bb8 1–0. pierre – anony, internet, 2015.

4.Nf3 Rg8 5.e4 h6 6.Be2 g5 7.d4 Nd7 8.Qa4 Ng6 9.d5 e5 10.Nbd2 g4 11.Ng1 Nf4 12.g3 Ng6 (12...Ne2 13.Ne2 Qg5 14.Bc1=) 13.Rc1 Be7 14.Bg4 Kf8 15.Bh5 Nf6 16.Bg6 Rg6 17.Ngf3 Bg4 18.Nh4 Rg7 19.f3 Bh3 20.Kf2 Nh5 21.g4?? (better is 21.Nf5 Bf5 22.ef5+/–) 21...Bh4-+ 22.Ke2 Nf4 23.Ke3 Bg5 24.Rce1 Ng2 25.Kf2 Ne1 26.Ke1 Bf4 27.Bc1 Qh4 28.Ke2 h5 29.Qd1 hg4 30.Rg1 gf3 31.Nf3 Bg4 32.Bf4 ef4 33.h3 Bf3 34.Kf3 Qh5 35.Kf4 Qd1 36.Rd1 0–1. GorillaTest – NASA, caissa.com, 2004.

4.b5 e5 5.a4 Be7 6.Nc3 Nh6 7.e3 Nf7 8.Nf3 Be6 9.Be2 Nd7 10.d4 e4 (better 10...0-0!?+=) 11.Ne4+- f5 (11...0-0 12.0-0+-) 12.Nc3 Ng5 13.0-0 (13.Ng5 Bg5 14.Bd3 Qf6+-) 13...Ne4 (13...Nf3 14.Bf3 Bc4 15.Re1+-) 14.Ne4 (14.Qc2!? Nc3 15.Bc3 d5+-) 14...fe4 15.Nd2 Bf5 (15...d5 16.Bg4 Bg4 17.Qg4+-) 16.Bg4 g6?? (better 16...Bg4 17.Qg4 Nf6+-) 17.Bf5 gf5 18.Qh5 Kf8 19.Qf5 Nf6 20.Ne4 Qc8 21.Qf4 Rg8 (21...Qg4 22.Qg4 Ng4+-) 22.Nf6 Bf6 23.Qf6 Ke8 24.d5 (24.Qf3 Rg4+-) 24...Qg4 The mate threat is Qxg2 25.Qe6 (25.g3!? a6+-) 25...Qe6 26.de6 Rg6 27.f4 Re6 28.Rae1 Kd7 (28...Re4 29.Bd4+-) 29.e4 Rae8 30.e5 de5 31.Be5 c6 32.Rd1 Ke7 33.g4 (33.Bg7 Kf7 34.f5 R6e7+-) 33...cb5 34.cb5 a6 35.Rc1 (35.Rfe1 Kf7+-) 35...ab5 (35...Kf7 36.g5+-) 36.Rc7 Kf8 37.ab5 b6 (37...R8e7 38.Re7 Ke7 39.Rc1+-) 38.Rd1 Kg8 (38...Rg6 39.Rh7 Rg4 40.Kf2 Re5 41.fe5 Rf4 42.Ke3+-) 39.Rdd7 Rg6 40.Rh7 Rg4 41.Kf2 Rf8 42.Rh8 1–0. BeepBeepImAJeep (2660) – bestmann315 (1705), lichess.org, 2016.

4.d4 Nd7 5.e4 e5 6.d5 Ne7 7.g3 (7.Nf3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Ng6+=) 7...f5 8.Nc3 Nf6 9.Bg2 Ng6 10.Nge2 Be7 11.0-0 0-0 12.f4 fe4 13.Ne4 Ne4 14.Be4 ef4 (14...Bh3 15.Rf2+=) 15.Bg6+/- (15.Nf4?! Nf4 16.Rf4 Rf4 17.gf4 Bf6=) 15...hg6 16.Nf4 Bf6? (better 16...a5+/-) 17.Ng6+- Rf7?? (17...Qe8 18.Qh5 Qe3 19.Rf2 Qf2 20.Kf2 Bb2 21.Kg2 Rf5 22.Ne7 Kf8 23.Nf5 Ba1 24.Qh8 Kf7+-) 18.Qh5 Re7 19.Bf6 gf6 (19...Qf8 20.Qh8 Kf7 21.Bg7 Bf5 22.Rf5 Kg6 23.Qh5 Kg7 24.Rg5 Kf6 25.Rf1) 20.Qh8 Kf7 21.Rf6 1-0. jhonores (2220) - huayra34 (2245), Rated Blitz game, lichess.org, 2020.

4.a4 Be7 5.b5 c5 (5...e5 6.d4 Nbd7 7.Nd2=+) 6.e3 b6 (6...e5 7.d3=+) 7.Nf3 Bb7 8.Be2 d5 9.0-0 dc4 10.Bc4 Nbd7 11.d4 cd4 12.Nd4 0-0 13.Be2 (13.Nd2 Rc8=) 13...Rc8 14.Nd2 Nc5 15.Bf3 Bf3 16.N2f3 Qc7 17.Nc6 Rfe8 (17...Nd5 18.a5+=) 18.Be5 Qb7 19.Rc1 (19.a5 Nfd7+=) 19...Nfd7 20.Ba1 Bf8 21.Nfd4 Nb8 22.a5 (22.Nb8 Rb8 23.Nc6 Rbc8+=) 22...Nc6 (22...e5 23.Nb8 ed4=) 23.Nc6 (23.bc6 Qe7 24.f4=) 23...Rc6?? (better 23...a6 24.ab6 Qb6-/+) 24.bc6+- Qc6 25.ab6 ab6 26.Qg4 g6 (26...e5 27.Rfd1+-) 27.Qd4 (27.Qf4 Bg7+-) 27...Qb5?? (better 27...e5 28.Qb2 Bg7+-) 28.Qh8 1–0. BeepBeepImAJeep (2580) – gr44cz (2300), lichess.org, 2017.

4.a4 g6 5.b5 Bg7 6.e3 a6 7.Nc3 ab5 (7...0-0 8.Nf3=) 8.ab5 Ra1 9.Qa1 Nbd7 10.Nf3 Nc5 (10...e5 11.d4=) 11.Be2 Nb3 (11...e5 12.d4 ed4 13.ed4=) 12.Qd1 Nc5 13.0-0 0-0 14.d4 Nce4 15.Qc2 Nc3 16.Bc3 c6 17.Nd2 (17.bc6 bc6 18.e4 Qc7+=) 17...cb5 18.cb5 Nd5 19.Bb2 Bd7 20.Ba3 Qb6 The isolani on b5 becomes a target 21.Nc4 Qc7?? (better 21...Qb5 22.Nd6 Qa5+-) 22.Bd6+- Qc8 23.Bf8 Bf8 24.Qb3 b6 (24...Qe8 25.Ne5+-) 25.Ne5 Be8 26.Bc4 Nf6 27.Rc1 Qb8 28.h3 Ne4 (28...Kg7 29.Bd3+-) 29.Be6! fe6 (29...Nd6 30.Bd7 Bg7+-) 30.Qe6 Kh8 31.Rc8 Qd6 (31...Qc8 32.Qc8 Nd6+-) 32.Qe8 Nf6 33.Qf8 (33.Qf7 Nd7 34.Nd7 h6 35.Rf8 Qf8 36.Qf8 Kh7 37.Nf6) 33...Qf8+- 34.Rf8 Kg7 35.Rf7 Kh6 36.Rf6 (36.Rf6 Kg5 37.Rf7 Kh5 38.f4 Kh4 39.Kf2 h6 40.Nf3 Kh5 41.g4) 1–0. BeepBeepImAJeep – Mavira, lichess.org, 2017.

4.Qc2 Be7 5.e3 0-0 6.Bd3 Re8 (6...Nc6 7.a3=) 7.h4 (7.Bf6 Bf6 8.Bh7 Kf8=+) 7...Nbd7 8.f3 (8.g4 Nf8 9.g5 N6d7=) 8...Nf8 (8...Ne5 9.h5-/+) 9.g4=+ N6d7 10.g5 a5 11.b5 b6 (11...Nc5 12.Be2=+) 12.Be2 (12.Be4 Ra7=) 12...Bb7 13.d4 e5 (13...c6 14.Nc3=+) 14.d5= Nc5 15.Nd2 Bc8 (15...f6 16.Ne4=) 16.Ne4 Ne4 17.fe4 f5 (17...f6!?=) 18.Bd3 (better 18.ef5!? Nd7 19.0-0-0+-) 18...fe4 19.Be4 Qd7 (19...Bg4 20.Nf3+=) 20.0-0-0+/- Qg4 21.Nf3 Qh5 (21...Ra7 22.Rdf1+/-) 22.Rdg1 (22.Ne5 de5 23.d6 Rb8 24.de7 Re7+-) 22...Ng6 23.Nd2 Bg4? (23...Nf8 24.Bf3 Qf7 25.Rf1+/-) 24.Rg3?? (better 24.Nf1 Bc8 25.Ng3+-) 24...Rf8+= 25.Rhg1 Bd7 26.Qd3 Rf2 (worse 26...Nh4 27.Rh1 h6 28.Bf3 Rf3 29.Nf3+/-) 27.Rh3?? (27.Bg6 hg6 (worse 27...Qg6 28.Qg6 hg6 29.R1g2+=) 28.Be5 de5-/+) 27...Raf8 (27...Bh3 28.Bg6 hg6 29.e4-+) 28.Bc3?? (better 28.Bg6 hg6 29.Rhh1=) 28...Bh3-+ 29.Rg3 (29.Bg6 hg6 30.Rh1 Bg2-+) 29...Bd7 (29...Qh4 30.Rg1-+) 30.Kc2 (30.Bg6 hg6 31.Rg1 Qh4-+) 30...Rh2 (30...Qh4 31.Rg1-+) 31.Kb3 Rff2 (better 31...Nh4 32.Rg1-+) 32.Nb1 (32.Nf3 Rh3 33.Rh3 Bh3 34.Bg6 hg6-+) 32...Qh4 33.Rg1 Be8 (better 33...Ra2!? 34.Nd2 Rhd2 35.Bd2 Rd2 36.Qd2 Qe4 37.Kc3-+) 34.Be1 Qh3 (better 34...Rb2 35.Kc3 Qh5 36.Bd2 Ra2 37.Kb3 Rad2 38.Nd2-+) 35.Bf2 Rf2 36.Bf5 (36.Nc3-+) 36...Rf5 37.e4 (37.Nc3-+) 37...Qd3 38.Nc3 Rf3 (38...Rf2 39.Rc1 Qd2 40.Rb1 Qc2 41.Ka3 Qc3 42.Rb3 Qc1 43.Ka4 Ra2 44.Ra3 Qa3) 39.Rc1 (39.Rh1 Qc3 40.Ka4 Qc4) 39...Qc3! 40.Rc3 Rc3 41.Kc3 Bg5 (41...Bg5 42.Kc2 Nf4-+) 0-1. ClayPigeons (2155) - Flowol1210 (2300), Rated Bullet game, lichess.org, 2021.

4.d4 g6 5.Nd2 Bg7 6.e4 Nbd7 7.f4 b6 8.Ngf3 Bb7 9.Bd3 Qe7 10.Qe2 c6 11.0-0 d5 12.e5 Ne4 13.Ne4 de4 14.Be4 Qb4 15.a3 Qb3 16.Qc2 Qc2 17.Bc2 c5 18.Ba4 Ke7 19.Bd7 Kd7 20.Rad1 Ke7 21.d5 Ba6 22.d6 Kd7 23.Rc1 Rhb8 24.a4 ½–½. von Rosenberg,Clemens – Gomez,Pablo, IECC, 2013.

4.e3 b6 5.Nf3 Bb7 6.d4 Nbd7 7.Nbd2 Be7 8.Be2 0-0 9.0-0 a5 10.a3 ab4 11.ab4 c5 12.bc5 (12.Ra8 Ba8 13.Qb3 d5=) 12...bc5 (12...Ra1 13.Ba1 bc5 14.Qc2=) 13.Qc2 Qc7 14.Bd3 Rfc8 15.Ra8 Ba8 16.h3 h6 17.Be2 cd4 18.ed4 Bc6 19.Rc1 Rb8 20.Bc3 Nf8 21.Ne1 Ng6 22.Nd3 Ne4 23.Ne4 Be4 24.Qa4 Bc6 (24...Bg5 25.Ra1=+) 25.Qa2 Bg5 26.Bd2 Ra8 27.Qc2 Bf6 28.d5 Bd7 (28...Ba4 29.Qa2=) 29.de6 Be6 Attacks the isolani on c4 30.Bf3 (30.Be3 Ra3=) 30...Rc8 (30...Ra1 31.Ra1 Ba1 32.Qa4 Qc4 33.Qa1 Qd3 34.Be3-/+) 31.c5 (31.Qb3 Ne7=) 31...dc5 (31...Bf5 32.Bg4 Bg4 33.hg4 dc5 34.Qc5 Qc5 35.Nc5 Ne5-/+) 32.Bc3 (better 32.Nc5!? Qe7 33.Be3=) 32...Bc3-/+ 33.Qc3 c4 34.Nb4 Ne5 (34...Qe5 35.Nc6 Qc3 36.Rc3-/+) 35.Nd5 (35.Be4 Qd6-/+) 35...Nf3 36.Qf3 Bd5 37.Qd5 c3 38.Rc2 Qe7 (38...Rb8 39.g3-/+) 39.Qd3 Qe1 40.Kh2 Qe5 41.g3 Qf6 42.Kg2 h5 43.h4 g6 44.Qb5 Kh7 45.Qd3 Qc6 46.Kh2 Qc5 47.Qf3 Qc4 48.Kg2 Rc7 49.Kh2 Qc6 50.Qe3 Qf6 51.Kg2 Kg7 52.Kh2 Qc6 53.Qd3 Qc4 54.Qe3 Qb4?? (54...Qb3 55.Qe5 Kg8 56.Qe8 Kh7 57.Qe2-/+) 55.Qd3 (better 55.Qe5 Kg8 56.Qc7+-) 55...Qe7 (better 55...Rc8!?-/+) 56.Qd4 Qf6 57.Qd3 (57.Qe3 Rc6 58.Kg1-/+) 57...Qf5-/+ 58.Qe3?? (better 58.Qd4 f6 59.Rc3 Rc3 60.Qc3 Qf2 61.Kh1 Qf1 62.Kh2 Qe2 63.Kg1-/+) 58...Qc2-+ 59.Qe5 (59.Qd4 f6 60.Qb6 Rd7-+) 59...Kh7 60.Qc7 (60.Kg2 Rb7 61.g4 Qb2 62.gh5 c2 63.hg6 fg6 64.Qb2 Rb2 65.Kh2 c1Q 66.Kg3 Qe1 67.Kg4 Qf2 68.h5 Rb4 69.Kg5 Qf4) 60...Qf2 61.Kh3 Qf6 (better 61...c2 62.Qc4 Kh6-+) 62.Kg2 Qf5?? (62...Kg7 63.Qc5-+) 63.Kg1?? (better 63.Qc3 Kg8 64.Qe3-/+) 63...c2-+ 64.Kg2 (64.Qc4 Qf3 65.Qc2 Qg3 66.Kf1 Qh4-+) 64...Kg7 (64...Qd5 65.Kf2 Qd2 66.Kf3-+) 65.g4 (65.Qc3 Kg8 66.Qc4-+) 65...Qg4 66.Kf2 Qh4 67.Ke3 Qf6 (67...Qf6 68.Qc2 Qe5 69.Kf3 Qf5 70.Qf5 gf5-+) 0-1. HIALUPHARMpl (2610) - KnightPawer (2635), Rated bullet game, lichess.org, 2021. (=1.b4 d6 2.Bb2 e6 3.c4)

4.e3 d5 5.b5 c6 6.a4 (6.Nf3 Be7=) 6...Qa5 (6...Bd6 7.Nf3=+) 7.Nc3 (7.Bf6 gf6 8.Nf3 Bb4=) 7...dc4 (7...Bd6 8.Nf3=) 8.Bc4 Qb4 9.Qb3 cb5 (9...Qb3 10.Bb3 a6 11.Nf3=) 10.ab5 (10.Nb5 Qb3 11.Bb3 Na6+=) 10...Qd6 (10...Nbd7 11.Nf3=) 11.Nf3+= b6 (11...Qb4 12.0-0+=) 12.0-0 Be7 (12...Qb4 13.e4+-) 13.d3 (13.Ba3 Qc7+-) 13...0-0 14.Rfd1 (14.Ba3 Qc7+=) 14...Bb7+= 15.Ne4 Ne4 16.de4 Qc5 (16...Qb4 17.Qc2+=) 17.Ba3 (better 17.Rac1 Be4 18.Be6+-) 17...Qh5?? (better 17...Qc7 18.Rac1 Bc5+=) 18.Be7+- Re8 19.Ba3 (19.Rd4!? h6 20.Bd6 Nd7+-) 19...Be4 20.Be2 Bd5 (20...Qf5 21.Qb4 h6 22.Bb2+-) 21.Qc3 Nd7 (21...Qg6 22.Qc7+-) 22.Bb2 (22.e4 Rac8 23.Qd2 Bb3+-) 22...f6 (22...Nf6 23.Qc7+-) 23.Nd4 (better 23.e4 Rac8 24.Qb4+- (24.ed5?! Rc3 25.Bc3 ed5 26.Ra7 Nc5+-)) 23...Rac8 (23...Qg6 24.f3 Rec8+-) 24.Bh5 (24.Bh5 Rc3 25.Be8+-) 1–0. GuestLRSB – GuestLNNW, freechess.org, 2017.

4.e3 d5 5.cd5 Qd5 6.a3 Be7 7.Nf3 0-0 8.Nc3 Qd8 9.d4 Nc6 10.Be2 a6 11.0-0 Bd6 12.h3 Ne7 13.e4 Bf4 14.Bc1 c6?? 15.Bf4+- 1–0. Fournier,Frederic (1935) – karokan, Active, 2009.

4.e3 Be7 5.Nf3 0-0 6.d4 c6 7.Be2 d5 8.b5 Ne4 9.0-0 f5 (9...dc4 10.bc6 Nc6 11.Bc4=) 10.a4+= Bf6 11.Nbd2 Bd7 12.Qb3 Be8 13.Rfc1 Nd7 14.a5 a6 15.bc6 bc6 16.Ba3 Be7 (16...Rf7!?+/-) 17.cd5 cd5 18.Ne4 (better 18.Be7 Qe7 19.Qb7+/-) 18...fe4= 19.Nd2 Ba3 20.Qa3 Qh4 21.f4 ef3 22.Nf3 (worse 22.gf3 Nf6 23.Bd3 Ng4 24.fg4 Qg4 25.Kh1 Rf2=) 22...Qh6 23.Rab1 Bh5 24.Rb7 Nf6 25.Rcc7 Rf7 (25...Ne8 26.Rc6+=) 26.Rf7 Bf7 27.Qe7?? (better 27.Ne5 Bh5 28.Qb3+/-) 27...Qe3-/+ 28.Kh1 Rf8 29.Ba6 Ne4?? (better 29...Ng4!? 30.Qh4 Nf2 31.Kg1 Ne4 32.Kh1 Bh5-+) 30.h3 (30.h4 Nf2 31.Kh2 Ng4 32.Kg3 Qf2 33.Kh3 Ne3-+) 30...Ng3 (better 30...Nf2!? 31.Kh2 Qf4 32.Kg1 Nh3 33.Kh1 Qc1 34.Kh2 Nf2-/+) 31.Kh2= Nf1?? (better 31...Nf5 32.Qg5 Qc3=) 32.Bf1+- Qf4 33.Kg1 Qe3 34.Kh2 Qf4 35.Kg1 h6?? (35...Qe3 36.Kh1 Qc1+-) 36.Ne5 (better 36.a6 Ra8 37.a7+-) 36...Qd4-/+ 37.Kh1 Qe5 (37...Qe5 38.Bb5 Bg6-/+) 0-1. jhonores (2215) - masteresteban (2260), Rated Blitz game, lichess.org, 2020.

4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.d4 Bb7 8.Nbd2 c5 9.bc5 dc5 10.dc5 Bc5 11.Nb3 Qc7 12.Nc5+= Qc5 13.0-0 Nc6 14.Rc1 Ne4 15.Qd3 Ng5 16.Qc3 f6? 17.Ng5 Qg5= 18.Bf3 Rab8 19.Rcd1 Na5 20.Bb7 Nb7 21.Rd4 e5 22.Rd7 Qf5 23.Rfd1 a5 24.Ba3 Rfd8 25.Rd8 Rd8 26.Rd8 Nd8 27.Qc1 Nc6 28.h3 e4 29.c5 bc5 30.Bc5 Qd5 31.a3 Ne5 32.Bd4 Nd3 33.Qc8 Kf7 34.Qc7 Kg6 35.Qg3 Kf7 36.Qc7 Kg6 37.Qg3 Qg5 38.Qg5 Kg5 39.f3 ef3 40.gf3 Ne1 41.a4?? Nf3-+ 42.Kf2 Ne5 43.Be5? fe5-+ 44.Kg3 Kf5 45.Kf3 g5 46.e4 Ke6?? 47.Kg4+= Kf6? 48.h4?? h6 49.h5?? Kg7 50.Kf5= Kf7 51.Ke5 g4 (51...g4 52.Kf4 g3 53.Kg3 Ke7+-) 0–1. Fournier,Frederic (1660) – crisan27, Active, 2007.

4.e3 Be7 5.Nf3 0-0 6.Be2 e5 7.d3 Bf5 8.0-0 Nbd7 9.e4 Bg6 10.Nbd2 Nb6 11.Nh4 Ne4?? (better is 11...Qd7+=) 12.Ng6+- Nd2 13.Ne7 Qe7 14.Qd2 f5 15.f4 e4 16.de4 Qe4 17.Qc3 Rf7 18.Bh5 Raf8 (18...Qc4 19.Bf7 Qf7 20.Rfe1+-) 19.Bf7 Rf7 20.Rae1 Qc4 (20...Qc6+-) 21.Re8 Rf8 22.Qg7 1–0. Fournier,Frederic (2070) – nisad (2100), Active, 2004.

4.Nf3 c6 5.Nc3 Qb6 6.a3 a5 7.Qb3 Be7 8.e3 0-0 9.d4 Nbd7 10.Be2 e5 11.0-0 Re8 12.Rfe1 Bf8 13.c5 dc5 (better 13...Qc7+=) 14.dc5?? (better 14.Bc4 cd4 15.Bf7 Kh8 16.Na4+-) 14...Nc5!-/+ 15.Qc4 (15.bc5 Qb3 Pinning (15...Qb3 Deflection)) 15...Be6 16.Qh4 Nb3 17.Rad1 ab4 18.Ne4 (18.ab4 Qb4 19.Qb4 Bb4 20.Ne5 Nd5 21.Nd5 Bd5-+ (21...Be1?! 22.Nc7 Bb4 23.Ne8 Re8 24.Nd3-/+)) 18...Ne4 19.Qe4 ba3 20.Be5 a2 (better 20...Bd5 21.Qf5 Bf3 22.gf3 Qc5-+) 21.Ng5-/+ f5 (21...g6 22.Qh4 h6+/-) 22.Qh4+= h6 23.Ne6 Re6 24.Bc4 Rae8 25.Rd7?? (25.Be6 Re6 26.Qc4+=) 25...Kh7 (better 25...Qa5!? 26.f4 a1Q 27.Ra1 Na1-/+) 26.Be6= Re6 27.Qc4?? (better 27.Bb2=+) 27...Re5-+ 28.Qf7 (28.Qf1 Ra5-+) 28...a1Q (28...Qa5!? 29.Rdd1 Rd5 30.h4 Rd1 31.Rd1-+) 29.Ra1 Na1 30.h4 Qb1 31.Kh2 Re7! 32.Re7 Be7 33.h5 (33.Qe7 Nc2 34.Qf7 Ne1-+) 33...f4! 34.Qe7 (34.ef4 Bf6 Combination; 34.Qf4 Bg5 Decoy) 34...Qf5 35.Qe8 (35.Qb7 Qh5 36.Kg1 Qd1 37.Kh2 fe3 38.fe3 Qd6 39.Kg1 Nc2-+) 35...fe3 36.fe3 Nb3 37.e4 Qg5 38.Qf7 Nc5 39.e5 Ne4 (better 39...Qe5!? 40.Kh1-+) 40.e6 Nf6 41.e7 Qe5 42.Kh3 (42.Kg1-+) 42...Qf5 43.Kh2 Ng4 44.Kg3 Qe5 (better 44...Qf7 45.Kg4 Qe7-+) 45.Kg4+- Qe4 46.Kg3 (46.Kh3 Qd3 47.g3 Qd7 48.Kh4 Qd4 49.Qf4 Qd5+-) 46...Qe3?? (better 46...Qe1 47.Kh2 Qh4 48.Kg1 Qd4 49.Kf1 Qd1 50.Kf2 Qd2 51.Kf3 Qd3 52.Kg4 Qd1 53.Qf3 Qd4 54.Qf4 Qd1 55.Qf3 Qd4 56.Qf4 Qd1 57.Qf3=) 47.Kh2+- Qe5 48.g3 Qe2 49.Kh3 Qh5 (49...Qe4 50.e8Q Qe8 51.Qe8 c5 52.Qe4 Kh8 53.Qb7 Kh7 54.Kg4 c4 55.Qe4 Kh8 56.Kf5 Kh7 57.Ke6 Kh8 58.Qa8 Kh7 59.Kf7 c3 60.Qg8) 50.Qh5 g6 51.Qe5 (51.Qe5 g5 52.e8Q g4 53.Kh4 b5 54.Qf7; 51.Qf3 h5 52.e8Q Kh6 53.Qef8 Kg5 54.Q3f6) 1-0. bjoernsen (2315) - Yordan_Asenov (2310), Rated blitz game, lichess.org, 2021.

4.g3 Be7 5.Bg2 c6 6.e3 d5 7.c5 0-0 8.Ne2 b6 9.d4 b5 10.a4= Ba6 11.Nbc3 ba4 12.Ra4 Be2 13.Ne2 a6 14.Qa1 Nbd7 15.Ra6+/– Ra6 16.Qa6 Nb8 17.Qa3 Qc8 18.0-0 Na6 19.Ra1 Qb7?? 20.Qa6+- Qa6 21.Ra6 Rc8 22.Nf4 g6 23.Nd3 Ne8 24.Ne5 Nc7 25.Rc6 Kg7 26.b5! Rb8 27.b6 Ne8 28.Nd7 Rb7 29.Rc8 Nf6 30.Nf6 Bf6 31.Rc7 Rb8 32.b7 Bd8 33.Rd7 Ba5 34.c6 h5 35.Ba3 Bb6 36.Bd6 Re8 37.c7 Bc7 38.Bc7 g5 39.Rd8 Rd8 40.Bd8 g4 41.b8Q Kg6 42.Qe5 h4 43.Qg5 Kh7 44.Bf6 (44.Bf6 hg3 45.Qg7#) 1–0. Schutz – Termath, Vereinsmeisterschaft, 1985.

4.c4 b6 5.Qf3 c6 6.d3 Bb7 7.Nc3 Qd7 8.c5 d5 9.Na4 Ra7?? 10.Qg3+- Qd8 11.Bg7 Bg7 12.Qg7 Qf6 13.Qf6 Nf6 14.cb6 Ra8 15.Nc5 Bc8 16.b7 Bb7 17.Nb7 Ra7 18.Na5 h5 19.Rc1 Rc7 20.Nf3 Ke7 21.d4 Ne4 22.Ne5 Rf8 23.f3 Nf6 24.a4 Kd6 25.g3 Nfd7 26.Nd7 Kd7 27.Nb3 Kd6 28.Kd2 f5 29.Nc5 Rg8 30.Na6 Na6 31.Ba6 Ra8 32.b5 c5 33.b6 Rc6 34.dc5 Kd7 35.Bb5 Ra4 36.Ba4 Kc8 37.Bc6 Kb8 (37...Kb8 38.Ra1 e5 39.Ra8#) 1–0. b4_player (2160) – bad_leroy_brown, GameColony.com, 2004.

4.c4 b6 5.Nf3 h6 (5...Nf6 6.Be2= (6.d4 d5 7.a3 Be7 8.Bd3 dc4=) 6...Be7 7.0-0 0-0 8.d4 Bb7=) 6.d4 (6.Be2 Nf6 7.0-0 Be7 8.d4 0-0+=) 6...Nd7 (6...d5 7.a3+= Nf6 8.Nbd2 Bb7+=) 7.Bd3 (7.d5 e5 8.Bd3 Ngf6+=) 7...Ne7 (7...d5 8.a3+= (8.c5 e5+=) 8...dc4+=) 8.0-0+/– g5 (8...Bb7+/–) 9.Nbd2 Bg7 10.Qc2 Bb7 11.Rac1 (11.h3 Nf6+=) 11...g4 12.Ne1 h5 13.c5 Nf6 14.e4 Bh6 (14...dc5 15.dc5 Nc6 16.a3+=) 15.Rd1 (15.d5 Bg7 16.cb6 cb6 17.de6 fe6 18.Qa4 b5+=) 15...b5 (15...Bg7 16.a3+/–) 16.a4 (16.d5 Bg7 17.de6 fe6+-) 16...Nc6 17.Qb3 (17.Bc3 Bd2 18.Qd2 ba4+/–) 17...ba4 (17...dc5 18.dc5 Nd4 19.Qa3+/–) 18.Qa4 0-0 19.Nc2 h4 20.Qa1 (20.Nb3 Bg7+/–) 20...a5+= 21.b5 Nb4 22.Nb4 ab4 23.Qb1 g3 (23...h3 24.gh3 gh3 25.Kh1+/–) 24.Nf3 (24.c6 Bc8 25.h3 gf2 26.Kh1 Nh5 27.Rf2 d5+=) 24...gf2 25.Kh1 Ng4 26.c6 Bc8 27.Bc1 Ne3 28.Be3 Be3 29.Qb4 h3 30.g3 (30.e5 hg2 31.Kg2 Kh8+/–) 30...e5+= 31.de5 (31.Be2!? ed4 32.Nd4=) 31...Ra2= 32.Be2 Re2 33.Qc4 (33.ed6 Bg4 34.Nd4 Qf6 35.Rg1 Qf3 36.Nf3 Bf3 37.Rg2 hg2) 33...Re1 34.Ne1 Bg4 35.Qd3 Bd1 (35...Bd1 36.Qe3 fe1Q (36...fe1B?! 37.Rf6 Bh5 38.Qg5 Bg6 39.Rg6 fg6 40.Qg6 Kh8 41.Qh6 Kg8 42.Qg6 Kh8 43.Qh6 Kg8 44.Qg6=; 36...fe1N?! 37.ed6 Qd6 38.Re1-/+; 36...fe1R?! 37.Qe1 Bh5 38.ed6 Qd6 39.Qe3-+) 37.Qe1 Bh5-+) 0–1. Roldan,Antonio – Mary,Laurent, IECG, 1999.

4.d4 Nd7 5.Nf3 Ne7 6.c4 g6 7.Be2 Bg7 8.a3 b6 9.Nbd2 Bb7 10.Qc2 h6 11.0-0 g5 12.Rab1 Ng6 13.Rfc1 g4 14.Ne1 Qg5 15.Ne4 Be4 (15...Qf5!? 16.Bd3 Qh5+/–) 16.Qe4 Rc8 17.Qg4 Qe7 (17...Qg4 18.Bg4 c5 19.Bf3+-) 18.c5 Nf6 (better is 18...bc5 19.bc5 dc5 20.Ba6 Rb8+-) 19.Qf3 d5 (19...bc5 20.Ba6 Rb8 21.dc5+-) 20.Ba6 (20.cb6 Rb8 21.bc7 Rc8+-) 20...Nh4 (20...Rb8 21.Bb5 Kd8 22.cb6 Rb6 23.Bd3+-) 21.Qe2 (better is 21.Qh3 Ra8 22.Bb5 Nd7+-) 21...Rb8 22.cb6 Rb6 23.Rc2 Ne4 (23...Kd8 24.b5+-) 24.Rbc1 Ra6 (24...c6 25.Rc6 Rc6 26.Rc6+-) 25.Qa6 0-0 26.Rc7 Qf6 27.f4 (27.Qe2 Ra8+-) 27...Nd2 28.Rc8 (28.Qe2 Nc4+-) 28...Nc4 29.Rf8 Bf8 30.Rc4 dc4 31.Qc4 Qg6 32.g3 Qb1 (32...Nf5 33.d5+-) 33.Qc1 (33.gh4?! Qe1 34.Qf1 Qe3 35.Qf2 Qe4 36.Qg2 Qg2 37.Kg2 Bd6+-) 33...Qc1 (33...Qg6 34.e4!+-) 34.Bc1 Nf5 35.Nd3 1–0. Fournier,Frederic – NN, jeu.europe–echecs.com, 2013.

4.Nf3 b6 5.c4 Nd7 6.Be2 Bb7 7.0-0 h6 8.d4 Ne7 9.Nc3 g6 10.d5 Bg7 11.de6 fe6 12.Qc1 Nf5 13.Nd2 Qg5 14.Bf3 Bf3 15.Nf3 Qf6 16.Rd1 Ne5 17.Ne5 Qe5 18.Rb1 Nh4 19.Ne2 Qg5 20.Ng3 Bb2 21.Qb2 0-0-0 22.Qd4 Nf5 23.Qb2 h5 24.Nf5 gf5 25.f4 Qg6 26.a4 h4 27.h3 Qg3 28.Qd4 Rhg8 29.Rd2 Qh3 30.Qf6 Qe3 31.Kh1 Qd2 32.Qe6 Kb8 33.Qf5 Qg2 0–1. axtur777 – Jan2020, lichess.org, 2020.

4.Nf3 Nd7 5.c4 b6 6.Nc3 Bb7 7.Be2 c5 8.bc5 dc5 9.d4 Ngf6 10.d5 ed5 11.Nd5 Nd5 12.cd5 Rg8? (better is 12...Bd6!?+=) 13.0-0 Bd6 14.Rb1 Qc7 15.Qd3 g6 16.Qe4 Kf8? (better is 16...Be7+-) 17.Ng5 h6 (17...Be7 18.Nh7 Ke8 19.Nf6 Nf6 20.Bf6 Rd8+-) 18.Nh7 1–0. pierred – anony, internet, 2014.

4.a3 Bb7 5.Bb5 Nd7 6.Nf3 Ngf6 7.c4 a6 8.Ba4 g6 9.Nc3 Bg7 10.Rb1 0-0 11.0-0 c5 12.Bb3 a5 13.b5 Ne4 14.Ne4 Be4 15.Bg7 Kg7 16.Rb2 Bd3 17.Re1 Ne5 18.Ne5 de5 19.Qf3 e4 20.Qf4 Qd7 21.Bc2 Rad8 22.Qe5 f6 23.Qc3 e5 24.Rb3 Rfe8 25.a4 Bc2 26.Qc2 Qd2 27.Rb2 Qe1 0–1. Evgenii_777 (1785) – svetomir60 (1775), lichess.org, 2020.

4.c4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.c4 d6).

4.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 d6).

4.a4 a5 5.b5 c5 6.Nf3 Nd7 7.Be2 b6 8.0-0 Bb7 9.d4 h6 10.Nfd2 cd4 11.ed4 Ndf6 12.c4 d5 13.Bf3 Qc7 14.Nc3 dc4 15.Bb7 Qb7 16.Nc4 Nd5? (better 16...Bb4+=) 17.Nd5+- ed5 18.Re1 Ne7?? (better 18...Kd8 19.Ne5 Nf6 20.Nc6 Kd7+-) 19.Nd6 Kd7 20.Nb7 Rb8 21.Qg4 f5 22.Re7! Be7 (22...Ke7 23.Qg6 Mate attack; 22...Be7 23.Qf5 Double attack) 23.Qf5 Ke8 24.Nd6! Bd6 25.Re1 Kd8 26.Qd5 Kc7 27.Qc6 Kd8 28.Qd6 Kc8 29.Qc6 Kd8 30.Qd5 Kc8 (30...Kc7 31.Rc1) 31.Rc1 1-0. DEFFM – GuestJJQG, freechess.org, 2021.

4.a4 f6 5.b5 e5 6.c4 d5 7.Nc3 d4 8.ed4 ed4 9.Ne4 Bb4 (9...f5 10.Ng3=) 10.Qe2 Ne7 11.Nf3 (11.c5 Qd5 12.Rc1 Nd7 13.bc6 bc6=) 11...0-0 (11...c5 12.Rb1 a5 13.ba6 Ra6 14.Bd4=+) 12.Qd3 Will d4 fall? (12.Nd4 Nf5 13.Nc2 Ba5+-) 12...Bf5 (12...c5 13.Ba3 Ba3 14.Qa3=+) 13.Nh4 (better 13.Nd4 Be4 14.Qe4+=) 13...Be4-/+ 14.Qe4 d3?? (14...Re8 15.Kd1 Bc3 16.Bc3 dc3=) 15.Bd3+- f5 16.Qe5 (better 16.Qe6 Kh8 17.Qh6+-) 16...Bd2?? (better 16...Rf6 17.Qe3 Rd6+=) 17.Kd2+- Rf7 18.Rad1 cb5 (18...a6 19.Rhe1+-) 19.ab5 (19.cb5 Nd7 20.Qd4 Nb6+-) 19...Nd7 20.Qd4 Nc5 (20...Qc7+-) 21.Qc5 Qc8 (21...a6 22.Ke2 Qf8 23.Rhe1+-) 22.Qd4 (better 22.Qc8!? Rc8 23.Ra1 Rd8+-) 22...Qc7 Black prepares f4 23.Nf3 (better 23.Qe5 Qb6 24.Ke2 Ng6 25.Ng6 Qg6+-) 23...Qa5 (23...Rd8 24.Qa7 Qc4 25.Ke2 Qe6 26.Ne5+-) 24.Bc3 Qa2 (24...Qc7 25.Ng5 Rd8 26.Qh4+-) 25.Ke1 (25.Bc2 Rc8 26.Ne5 Qa3 27.Nf7 Kf7+-) 25...f4 (25...Nc6 26.bc6 bc6 27.c5 Re7 28.Kf1+-) 26.Rd2 (26.Ng5 Nf5 27.Bf5 Re8 28.Be6 Re6 29.Ne6 Qa3+-) 26...Nf5 (26...Qa3 27.Bh7! Kh8 28.Ng5+-) 27.Bf5 Re8 28.Ne5 (better 28.Kf1 Qa3 29.Bh7 Kh7 30.Ng5 Kg8 31.Nf7+-) 28...Qb1 29.Bb1 f3 30.gf3 (30.Qd5 Ref8 31.Nf7 Re8 32.Ne5 Kh8 33.Qd8 g6 34.Qe8 Kg7 35.Nf7) 30...Rf5 (30...a6 31.Qd5 Kh8 32.Qf7 Rb8 33.Ng6 hg6 34.Qg7) 31.Kd1 (31.Bf5 g5 32.Qd5 Kh8 33.Qf7 Re5 34.Be5) 31...Rg5 (31...Rfe5 32.Re2! a6 33.Re5 Re5 34.Qe5 Kf7 35.Re1 ab5 36.Qg7) 32.f4 (32.Qd5 Kh8 33.Nf7 Kg8 34.Ng5 Kh8 35.Qd8 Rd8 36.Rd8) 32...Rge5 (32...Rh5 33.Qd5 Kh8 34.Nf7 Kg8 35.Ng5 Kh8 36.Qd8 Rd8 37.Rd8) 33.Qd5 (33.fe5 Rf8 34.e6 Rf6 35.Qd8 Rf8 36.Bb4 Rd8 37.Rd8) 33...Kh8 34.Qe5 Rg8 35.Rd7 (35.Qf5 a5 36.Qh7) 35...h6 (35...a6 36.Qf5 ab5 37.Qh7) 36.Qg7! Rg7 Theme: Deflection from d8 37.Bg7 (37.Rd8) 37...Kg8 38.Bf6 (38.Re1 a5 39.Re8) 38...Kf8 39.Bg6 Kg8 (39...a5 40.Rd8) 40.Rd8 1–0. BeepBeepImAJeep (2465) – aloisp (1655), lichess.org, 2017.

4.Nf3 b5 5.a4+= ba4 6.Be2 Bd7 7.Ra4 c5 8.b5 a6 9.0-0 Qb6 10.c4+/– Nf6 11.d4 Be7 12.Ng5 h6 13.Nh3 cd4 14.Bd4+/– Qb7 15.Bf6 Bf6 16.Bf3 Bc6?? 17.bc6+- Nc6 18.Qd6 Be7 19.Qc6 Qc6 20.Bc6 Kf8 21.Ba8 g5 22.Ra6 Kg7 23.Nc3 Rc8 24.Bc6 Bb4 25.Rc1 Bc3 26.Rc3 Kg6 27.f3 Rb8 28.c5 Rb1 29.Kf2 Rb2 30.Kg3 h5 31.f4 h4 32.Kf3 g4 33.Kg4 Rg2 34.Bg2 f5 35.Kh4 Kf6 36.c6 (36.c6 Kg6 37.c7 Kf7 38.c8Q Kf6 39.Re6 Kf7 40.Rc7) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.Nf3 b5 5.d4 Bb7 6.c4 a6 7.a3+= Be7 8.d5 e5 9.Be2 Nf6 10.Nc3 Nbd7 11.0-0 0-0 12.Qc2 cd5 13.cb5+= Nb6 14.ba6 Ba6 15.Ba6 Ra6 16.Rfd1 Nc4 17.Nd5 Nb2 18.Qb2 Nd5 19.Rd5 Qb6 20.e4 f5 21.ef5 Rf5 22.Qc2 Bf6?? 23.Qf5 e4 24.Qe6 Kf8 25.Qc8 Kf7 26.Qd7 Kg6 27.Qf5 Kf7+- 28.Ng5 Ke7 29.Qe6 Kd8 30.Nf7 Kc7 31.Rc1 Kb7 32.Qd7 Ka8 33.Rc8 Qb8 34.Rb8 Kb8 35.Rb5 Ka8 36.Qb7 1–0. erisonpassos – belarybcia000, kurnik, 2011.

4.Nf3 b5 5.Be2 a6 6.0-0 Be7?? 7.h3?? Bf6+= 8.d3?? Bb2-+ 9.Nbd2 Ba1 10.Qa1 Qf6 11.Qc1 Bb7 12.Ne4 Qe7 13.c4 d5 14.cd5 cd5 15.Nc5 Bc6 16.Ne5 Nf6 17.d4 0-0 18.Bd3 Ne4 19.Ne4 de4 20.Bb1 Bd5 21.Qc2 Rc8 22.Qc8+- Qf8 23.Qc7 f6+= 24.Nd7 Nd7=+ 25.Qd7 Rd8 26.Qa7 Ra8 27.Qb6 Bc4 28.Rc1 Bd3?? 29.Bd3 ed3 30.Qe6 Qf7?? 31.Qf7 Kf7 32.Rd1 Rc8 33.Rd3 Rc1 34.Kh2 Rc2 35.Ra3 Rc6 36.f3 Ke6 37.Rd3 Kd5 38.a3 g5 39.e4 Kd6 40.Kg3 h5 41.f4 gf4 42.Kf4 Kd7 43.e5 fe5 44.de5 Ke7 45.Rd6! Rc4 46.Kg5 Re4 47.Ra6 Re5 48.Kh4 Re6 49.Re6 Ke6 50.Kh5 Kd5 51.Kg5 Kc4 52.Kf5 Kb3 53.h4 Ka3 54.h5 Kb4 55.h6 Ka4 56.h7 b4 57.h8Q Ka3 58.Qa1 Kb3 59.g3 Kc4 60.g4 b3 61.g5 Kb4 62.g6 Kc4 63.g7 Kd3 64.g8Q b2 (64...b2 65.Qd1 Kc3 66.Qgb3; 64...Ke2 65.Qc4 Kf3 66.Qf4 Ke2 67.Qaf1) 1–0. horacyad2010 – takise1xxx, kurnik, 2011.

4.Nf3 Ne7 5.Be2 Ng6 6.c4 e5 7.d3 Nd7 8.a4 Be7 9.b5 0-0 10.d4 e4 11.Nfd2 d5 12.0-0 Bf6 13.f3 Bg5 14.fe4 Be3 15.Kh1 de4 16.Ne4 f5 17.Ng3 f4 18.Ne4 Nf6 19.Nf6 Qf6 20.Bf3 Bf5 21.d5 Kh8 22.Bf6 1–0. Chess4Win (1795) – loyalist (1795), lichess.org, 2019.

4.Nf3 f6 5.Nh4 g6 6.Bd3 Bg7 7.Ng6 hg6 8.Bg6 Kf8 9.Qf3 e5 10.d4 Rh6 11.Bf5 Bf5 12.Qf5 Nd7 13.0-0 Ne7 14.Qe6 Ke8 15.de5 de5 16.Qg4 Rg6 17.Qh5 Kf7 18.f4 Qh8 19.Qh8 Rh8 20.fe5 f5 21.e4 Be5 22.Be5 Ne5 23.ef5 Rf6 24.Nd2 Rf5 25.Ne4 Rf1 26.Rf1 Ke8 27.Nd6 Kd7 28.Nb7 Rb8 29.Nc5 Ke8 30.a3 a5 31.c3 ab4 32.ab4 Ra8 33.Re1 N7g6 34.h4 Ra2 35.h5 Nf4 36.Re5 Kf7 37.Rf5 Ke7 38.Rf4 Ra1 39.Kh2 1–0. Abdullaevich (1715) – drestevan (1780), lichess.org, 2019.

4.Qg4 Nf6 5.Qd1 Nbd7 6.Nf3 e5 7.c4 Be7 8.d4 e4 9.Nfd2 d5 10.b5 Nf8 11.h3 Bd7 12.a4 a6 13.ba6 ba6 14.Be2 Ng6 15.Nc3 Be6 16.0-0 0-0 17.f3 ef3 18.Rf3 Nh4 19.Rf6 Bf6 20.cd5 cd5 21.a5 Bg5 22.Nf1 Re8 23.Na4 Qd6 24.Ba3 Qc6 25.Nc5 Bc8 26.Rc1 Qh6 27.Qb3 Be3 28.Ne3 Re3 29.Qd5 Bh3 30.Qa8 Bc8 31.Qc8 1–0. b4_Bb2 (1785) – mark19116 (1870), lichess.org, 2020.

5.d4 Qc7? 6.de5+- de5 7.Be5 (7.Ne5?! Bb4 8.Nd2 Nf6+=) 7...Qd7 (7...Qe7 8.a3+-) 8.Nbd2 f6 9.Bc3 Ne7 10.e4 Ng6 11.Qb1 Qe6 (11...Qe7 12.Nd4+-) 12.Qb2 (12.Bc4 Qe7 13.Nd4 Na6+-) 12...Bd6 13.0-0-0 (13.Bc4 Qe7+-) 13...b5 14.Nd4 Qd7 (14...Qf7 15.a4! a6 16.Qa3+-) 15.Nf5 Ne5 (15...0-0+-) 16.Nf3 Nf3 (16...Nf7 17.Nd6 Nd6+-) 17.Nd6 (17.gf3?! Bf4 18.Bd2 Be5+-) 17...Kf8 18.gf3 Bb7 19.Bf6 Na6 20.Bh3! Qc7 (20...Qh3 21.Bg7 Deflection) 21.Rhg1 1–0. pierred – anony, internet, 2015.

5.d4 e4 6.Nfd2 d5 7.a3=+.

5.d4 e4 6.Nfd2 f5 7.d5 Nf6 8.Nc3 Be7 9.Bc4 b5 10.Bb3 Bd7 11.a4 0-0?? (better is 11...ba4 12.dc6 ab3 13.cd7 Nbd7 14.Nb3 Nb6=) 12.dc6+- Kh8 13.ab5 (13.cd7!? ba4 14.Be6 Nbd7 15.Ra4 d5+-) 13...Be8 14.Nd5 Bf7 (14...Nd5 15.Bd5 Qc7+-) 15.c7 Qc8 (15...Qd7 16.Bf6 (16.cb8B?! Nd5 17.Bd5 Bd5+-) 16...Bf6 17.Nf6 (17.cb8B?! Ba1 18.Qa1 Rab8+-) 17...Qc7 18.Bd5 Bd5 19.Nd5+-) 16.cb8Q Qb8 17.Ne7 Bb3 (17...Bh5 18.Qb1 Qb5 19.c4+-) 18.Nb3 Qc7 (18...f4 19.ef4 Qb5 20.Qd6+-) 19.Nf5 (19.Bf6 gf6 20.Nf5 Qc3 21.Qd2 Qd2 22.Kd2 d5+-) 19...Rac8 (19...Ne8 20.Qg4 Rc8 21.Nbd4+-) 20.Qd6 Qc2 (20...Qd6 21.Nd6 Rc2 22.Bd4+-) 21.Qe7 Rc7 22.Qf8 (22.Qf8 Ng8 23.Qg7 Rg7 24.Bg7) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.d4 e4 6.Nfd2 Nf6+=.

5.d4 Bg4 6.Be2 Bf3 7.Bf3 ed4 8.Bd4 Nf6 9.a3 Nbd7 10.Nd2 Qc7 11.c4 Be7 12.0-0 Rd8 13.Qc2 Ne5 14.Bc3 Nf3 15.Nf3 0-0 16.Nd4 Qd7 17.Nf5 d5 18.c5 Rfe8 19.Rfd1 Bf8 20.Rd2?? Ne4-+ 21.Rdd1? g6 22.Ng3 Ng3 23.hg3= Qg4 24.Qb2 Re6 25.Rd4 Qf5 26.Rf4 Qg5 27.Bh8 f5 28.Rd1 Re4?? 29.Re4?? fe4=+ 30.Rd4 Rd7 31.Rd1 Bg7 32.Bg7 Rg7 33.Rd3?? h5 34.Rd5?? cd5 35.Qc3 h4 36.c6 bc6 37.Qc6 hg3 38.Qe8 Kh7 39.f3 (39.Qe6 gf2 40.Kf2-+) 0–1. slavisa10 – Ledgendari, caissa.com, 2004.

4.b5 Nb8 5.Be2 c6 6.a4 (6.Nf3 cb5 7.Bb5 Bd7+=) 6...cb5 (6...e5 7.Nf3=) 7.ab5+= a6 8.Bf3 (8.Nf3 e5+=) 8...d5= 9.Ne2 Qd7 (9...Nf6 10.0-0=) 10.Nbc3 Bb4? (10...Nf6 11.0-0+=) 11.0-0 (better is 11.Nd5 ed5 12.Bg7 Qb5 13.Bh8+-) 11...Bc3 (11...Nf6 12.Ra4 Bd6 13.b6+=) 12.Nc3 b6?? (better is 12...Nf6+=) 13.Na4 (better is 13.Nd5 Bb7 14.Bg7 Bd5 15.Be2+-) 13...Qb5?? (13...ab5 14.Bg7 ba4 15.Bh8 Nc6+-) 14.Bg7 f6 15.Bh8 Kf7 (15...Kd8 16.c4! Qc6 17.cd5 ed5 18.Qb3+-) 16.c4! Qc4 (16...dc4 17.Ba8) 17.Nb6 (17...Qc6 18.Qb1+-) 1–0. Hyperboleweevil (1900) – guest601, ICC, 2003.

4.b5 Nce7 5.Be2=.

4.b5 Nce7 5.Nf3 h6 6.a4 Nf6 7.Bf6 gf6 8.g3 Bd7 9.Bg2 Qc8 10.c4 d5 11.c5 a6 12.Nc3 ab5 13.ab5 Ra1 14.Qa1 Nf5 15.Qb2 Bc5 16.Na4 Bd6 17.Qf6 Rg8 18.Qb2 e5 19.Ne5 d4 20.Nd7 Kd7 21.0-0 h5 22.h4 de3 23.de3 Bg3 24.fg3 Ne3 25.Qd2 Nd5 26.Qd5 Ke8 27.Qf7 Kd8 28.Rd1 1–0. Abdullaevich (1655) – me_rci, lichess.org, 2018.

4.c4 a6 5.Nc3 Nf6 6.Nge2 (6.Nf3 a5 7.ba5 Ra5=) 6...Be7 7.Ng3 Rg8 (7...0-0 8.Be2=) 8.Qc2 g6 (8...Nc6 9.a3=) 9.Bd3 Nc6 10.a3 Ne5 (10...e5 11.0-0+=) 11.Be2 Neg4 12.h3 (12.0-0 h5+-) 12...Ne5 (12...Nh6 13.Bf3 c6 14.0-0+=) 13.d4+- Nc6 14.b5 (14.d5 Na7+-) 14...ab5+= 15.cb5 Na5 16.0-0 (16.e4 c6+-) 16...b6 (16...d5 17.e4 de4 18.Nge4 Ne4 19.Ne4+=) 17.Nge4 (17.e4 c6+-) 17...Nb7 (17...Ne4!? 18.Qe4 d5+=) 18.Nf6+- Bf6 19.Ne4 (19.Bf3 Ra7+-) 19...Be7 20.Rac1 Rc8 21.Bf3 (21.d5 ed5 22.Nc3 Bf5+-) 21...Na5 (better 21...d5 22.Nc3 c6+=) 22.Bc3 (better 22.Qe2!?+-) 22...Bb5 (22...d5 23.Ng3 Bb5 24.Ne2-/+) 23.Ba5= ba5 24.Be2 Bd7 25.a4 (25.Ba6 Ra8 26.Bb7 Rb8=) 25...f5 26.Nc3 d5 27.Nb5 The pressure on the backward pawn c7 grows 27...c6 28.Nc3 (28.Na7 Rc7 29.Nb5 Rb7=+) 28...Bb4 (28...c5 29.dc5 Bc5 30.Ba6=+) 29.f3 (29.Ba6 Rb8=+) 29...Qe7 (29...c5 30.Ba6 Rc7 31.Nb5 Bb5 32.ab5-/+) 30.e4 (30.Na2 Bd6=+) 30...f4 (30...c5 31.Ba6 Ra8 32.Nd5 ed5 33.Bb7-/+) 31.ed5 (31.Ba6 Rd8=+) 31...ed5 (31...cd5 32.Qb3-/+) 32.Rfe1 (32.Ba6 Rb8 33.Rfe1 Be6=) 32...Kf8 (32...Qe3 33.Kf1 Kd8-/+) 33.Bd3? (better 33.Ba6 Qf6 34.Bc8 Qd4 35.Kh2 Bc8 36.Red1 Qc3 37.Qc3 Bc3 38.Rc3=) 33...Qf6-+ 34.Re2? (better 34.Qf2!?-+) 34...Qd4 35.Kh1 Rg7 (better 35...Bc3 36.Qc3 Qc3 37.Rc3 Kf7-+) 36.Rce1?? (36.Na2-+) 36...Bc3 (36...Qc3!? 37.Qb1-+) 37.Rd1 Qf6 38.Kh2 (38.Qb3 Kg8-+) 38...Re8 (38...c5 39.Rc1 Bd4 40.Bb5-+) 39.Re8 Ke8 40.Qe2 (40.Rc1 Bd4 41.Rb1 Re7-+) 40...Re7 41.Qc2 Re3 42.Be2 (42.Qb3 Kf7-+) 42...Qg5 (better 42...Qh4 43.Bf1-+) 43.Rd3 (43.Bf1 Qg3 44.Kh1 Re1-+) 43...Qg3 44.Kg1 Qe1 45.Kh2 (45.Bf1 Bf5 46.Re3 fe3-+) 45...Qe2 (better 45...Re2 46.Qe2 Qe2 47.Rc3-+) 46.Re3 (46.Qe2 Re2 47.Rc3-+) 46...Qe3 (46...fe3?! 47.Qe2 d4 48.Qc4=+) 47.Qb3 d4 (47...Bd4 48.Qd1 Bh3 49.Qd4 Qd4 50.Kh3 Qf2 51.Kh2 d4 52.Kh1 d3 53.Kh2 d2 54.Kh1 d1Q 55.Kh2 Qh4) 48.Qg8 Ke7 49.Qh7 (49.Qg7 Kd6 50.Qf8 Kd5-+) 49...Kd6 50.Qg6 Kc7 51.Qe4 Qe4 52.fe4 Be6 (52...d3 53.g3 f3 54.Kg1 d2 55.Kf2 Bd4 56.Kf3 d1Q 57.Kf4 Qd2 58.Kf3 Qf2) 53.Kg1 Bb3 (53...d3 54.Kh2 d2 55.h4 d1Q 56.g4 Bd4 57.h5 Qg1 58.Kh3 Qg3) 54.Kf1 Ba4 (54...d3 55.g3 d2 56.gf4 Bd4 57.e5 d1Q 58.Kg2 Bd5 59.Kg3 Qf3 60.Kh4 Qf4 61.Kh5 Bf7) 55.Ke2-+ Bc2 56.e5 a4 57.e6 a3 (57...d3 58.Kf2 d2 59.g4 Bd4 60.Kg2 Be4 61.Kh2 d1Q 62.h4 Qh1) 58.h4 Kd6 (58...a2 59.Kf3 a1Q 60.Kf4 Qf1 61.Kg3 Be1 62.Kh2 Be4 63.g4 Qg2) 59.h5 a2 60.h6 (60.Kf2 a1Q 61.Kf3 Qf1 62.Kg4 Qg2 63.Kf4 Bd2) 60...a1Q 61.Kf3 Qd1 (61...Qf1 62.Kg4 Qg2 63.Kh4 Qg3 64.Kh5 Bg6) 62.Kf4 Bd2 (62...Qf1 63.Kg3 Be1 64.Kh2 Be4 65.h7 Qg2) 63.Kg3 Qh5 (63...Qe1 64.Kh3 Bf4 65.Kg4 Qg3 66.Kh5 Bg6) 64.Kf2 Qh6 (64...Qh6 65.g4 Qf4 66.Kg2 Be4 67.Kh3 Qh6 68.Kg3 Be1) 0–1. aravind555 (1680) – daviy (1770), lichess.org, 2020.

4.Nf3 Nc6 5.b5 Nce7 6.c4 c6 7.a4 Nf5 8.Be2 Nf6 9.0-0 Be7 10.d4 Ne4 11.d5 0-0 12.dc6 bc6 13.Nbd2 cb5 14.Ne4 Bf6 15.Nf6 gf6 16.cb5 Nh6 17.Qd6 f5 18.g3 f6 19.Bc4 Nf7 20.Be6 Be6 21.Qe6 Kg7 22.Rfd1 Qb6 23.Qb6 ab6 24.Rd7 Rad8 25.Rad1 Rd7 26.Rd7 Kg6 27.Rb7 Rd8 28.Rb6 Rd1 29.Kg2 Rb1 30.Bf6 Kh5 31.Bd4 Rb3 32.a5 Nd8 33.a6 Ra3 34.Rf6 Ra2 35.a7 Nb7 36.b6 Ra5 0–1. Abdullaevich (1845) – math_28, lichess.org, 2019.

4.Nf3 Be7 5.Bg7 Bf6 6.Bh8 Ba1 7.Ba1 Nc6 8.b5 Nce7 9.a4 Nh6 10.Bd3 e5 11.Bh7 Bg4 12.h3 Bh5 13.g4 Bg6 14.Bg6 Ng6 15.d3 Qe7 16.Nbd2 0-0-0 17.c4 f5 18.gf5 Nf5 19.Ne4 d5 20.cd5 Rd5 21.Rg1 Qb4 22.Ke2 Ngh4 23.Nh4 Nh4 24.Rg8 Kd7 25.Nf6 Ke6 26.Nd5 Kd5 27.e4 Ke6 28.Re8 Kd7 29.Re5 Ng2 30.Rd5 Kc8 31.Qd2 Qf8 32.Rf5 Qa3 33.Qb2 Qa4 34.Qh8 Kd7 35.Qg7 Kd6 36.Qg2 Qc2 37.Ke3 Qc1 38.Kf3 Qd1 39.Kg3 Qa1 40.e5 Ke6 41.Qf3 Qg1 42.Kh4 Qc1 43.Rf6 Kd7 44.Qd5 Ke7 45.Qe6 Kd8 46.Rf8 1–0. Phomopsis (1640) – Mahesh045 (1615), lichess.org, 2019.

4.Nf3 Nf6 5.Be2 Be7 6.0-0 0-0 7.d3 h6 8.Nbd2 b6 9.c4 a6 10.a4 c6 11.Qb3 c5 12.b5 ab5 13.ab5 e5 14.Ra8 Be6 15.Rfa1 Nfd7 16.h3 g5 17.Qa4 g4 18.hg4 Bg4 19.Qd1 f5 20.Nh2 Be2 21.Qe2 Bg5 22.Qh5 Kg7 23.Nhf3 Qe7 24.Ng5 hg5 25.Nf3 Nf6 26.Qg5 Kf7 27.Qh4 Ke6 28.Ng5 Kd7 29.R8a7 Kc8 30.Re7 1–0. Phomopsis (1670) – lespoir9 (1615), lichess.org, 2020.

4.c4 c6 5.c5 d5 (5...dc5!? 6.bc5 Nc5-/+) 6.Ne2 (6.d4 b6=) 6...e5 7.Ng3 Ngf6 8.Be2 Be7 (8...b6 9.Qa4 Bb7 10.d4 ed4 11.ed4=) 9.Nf5 Bf8 10.d4 e4 11.f3 (11.0-0 Nc5 12.Ng7 Bg7 13.dc5 Be6=) 11...Nb8 12.fe4 (12.Ng3 ef3 13.gf3 b6=) 12...Ne4=+ 13.Bg4?? (better 13.0-0 g6 14.Ng3 Ng3 15.hg3=+) 13...Qh4?? (better 13...Bf5 14.Bf5 Qh4 15.g3 Ng3 16.hg3 Qh1 17.Kd2 Qg2 18.Qe2 Qg3-+) 14.g3 (better 14.Nh4 Bg4 15.Qg4+-) 14...Qg5 (better 14...Qd8 15.Nc3 Nc3 16.Bc3 h5 17.Nd6 Bd6 18.Bc8 Qc8 19.cd6 Qe6-/+) 15.h4? (15.Ng7 Kd8 (worse 15...Qg7 16.Bc8 a5 17.Nc3+-) 16.Bc8 Kc8=) 15...Qf6 (better 15...Qd8!? 16.Qf3 g6 17.Nd6 Bd6 18.cd6 Bg4 19.Qg4 Qd6-+) 16.0-0 White launches an attack 16...Qg6 (better 16...Qd8!? 17.Qf3 f6-/+) 17.Bh5= Qe6 18.Bf7?? (better 18.Bg4 Qg6 19.Bh5=) 18...Qf7 (better 18...Kf7!? 19.Nd6 Ke7 20.Nc8 Qc8-+) 19.Nd6-/+ Bd6?? (19...Nd6 20.Rf7) 20.Rf7+= Kf7 21.cd6 h5 (21...Rf8!?+-) 22.Nd2 Nf6 (22...Nd6 23.Qf3 Ke7 24.e4+-) 23.e4 (better 23.Qb3 Re8 24.Re1+-) 23...Bg4? (23...de4!? 24.Qf1 Re8+-) 24.Qe1 (24.Qb3 Re8 25.b5 Kg8+-) 24...Nbd7 (better 24...de4 25.Ne4 Re8+-) 25.e5 Ne5 (25...Nh7+-) 26.de5 Ne4 (26...Nd7+-) 27.Ne4 de4 28.Qe4 Ke6 (28...Rh6+-) 29.Qg6 Kd5 30.Qf7 Ke4 31.Re1 Kd3 (31...Be2 32.Re2 Kd3 33.Qf3 Kc4 34.Qc3 Kb5 35.Qc5 Ka6 36.Qa5) 32.Qb3 Kd2 33.Qc3 1–0. aravind555 (1810) – Prashant_2142 (1810), lichess.org, 2020.

4.c4 Ne7 5.Qb3 e5 6.Nf3 Nf6 7.d4 Be6 (better 7...e4!? 8.Nfd2 d5=) 8.de5+/- de5 9.Ne5 Ng6 10.Nf3 Qe7 11.a3 0-0-0 12.Nc3 (12.Be2 Ne4+/-) 12...Nd7 (12...Bg4 13.Be2+/-) 13.Be2 f6 (13...Nh4 14.Nh4 Qh4 15.Rd1+/-) 14.Nd5 (14.0-0 Nde5+-) 14...Bd5 (14...Qf7!?+/-) 15.cd5+- Nde5 16.Rc1 Nf3 17.Bf3 Ne5 18.Be2 Qf7? (18...Qd7 19.Qc2 Bd6 20.0-0+-) 19.Rd1 (better 19.Be5 fe5 20.Bg4 Rd7 21.Qa4+- (worse 21.Bd7 Qd7 22.0-0 Bd6+-)) 19...Bd6 20.0-0 Kb8 21.f3 (21.Qa4 Qd7 22.b5 Qe7+-) 21...h5 (21...Rhe8 22.f4 Ng6 23.Bc4+-) 22.e4 h4 (22...Ng6 23.Bc4+-) 23.a4 (23.f4!? Ng6 24.e5 Qe8 25.ed6 Qe2 26.dc7 Kc7+-) 23...h3 (23...Ng6 24.Rc1+/-) 24.g3+- g5 (24...Qg6 25.Be5 Be5 26.f4+-) 25.a5 Ng6 (25...Qg6 26.Qe3+-) 26.b5 (26.a6 b6+-) 26...Rhe8 27.b6 cb6 28.ab6 ab6? (better 28...a6+-) 29.Qb6 Qc7 30.Qc7 Bc7 (30...Kc7 31.Bf6 Bc5 32.Kh1+-) 31.Rb1 (better 31.Bf6 Rd6 32.Bb5+-) 31...Be5 32.Ba3 (better 32.Kf2+-) 32...Rd7? (better 32...Bd6 33.Bd6 Rd6+-) 33.Bb5 Red8 34.Bd7 Rd7 35.Rfc1 (35.Kf2 Bd6 36.Bd6 Rd6+-) 35...Ne7 (35...Bd4 36.Kf1+-) 36.Rc2 Nc8 (36...Ng6 37.Kf2+-) 37.Bb2 Bb2 38.Rbb2 Nd6 39.Rb6 Ka7 40.Rbb2 Nf7?? (40...Kb8 41.g4 Ka7+-) 41.Kf2+- Ne5 42.f4 (better 42.Ke3!? Nf7+-) 42...Nd3 43.Kf3 Nb2 44.Rb2 gf4 (44...Re7 45.fg5 fg5 46.d6+-) 45.gf4 (45.Kf4 Ka6+-) 45...Rg7 (45...f5 46.Rd2 fe4 47.Ke4+-) 46.e5 fe5 47.fe5 Rg5 (47...Kb8 48.d6 Rf7 49.Ke4+-) 48.Ke4 (better 48.e6 Rd5 49.e7 Re5+-) 48…Rg2 (48...Rg2 49.d6 Rb2+-). ClayPigeons (2170) - chessi96 (2300), Rated Bullet game, lichess.org, 2020.

4.d4 Ne7 5.c4 b6 (5...Ng6 6.a3=) 6.Nc3 Bb7 7.Nf3 Rc8 (7...c5 8.a3+=) 8.b5 (8.Bd3 c5+=) 8...c6 9.a4 (9.Bd3 c5+=) 9...a5= 10.Be2 c5 (10...cb5 11.Nb5 Ng6 12.0-0+=) 11.0-0 (11.d5 Ng6+=) 11...Nf5 (11...cd4!? 12.Qd4 Nf5=) 12.d5+/– e5 (12...Qf6 13.Bd3+/–) 13.Ne4 (13.Bd3 Nh4+/–) 13...Nf6 14.Qc2 g6 15.Nf6 Qf6 16.Qe4 Bg7 17.Nd2 Qe7 18.Bg4 Nh6 (better is 18...Rd8!?+/–) 19.Bc8+- Bc8 20.f4?? (20.Qd3 0-0+-) 20...f5?? (better is 20...Bf5 21.Qf3 e4-/+) 21.Qc2+- e4 22.Ne4 Rg8?? 23.Nf2 Kd8 24.Rae1 Qh4 25.Bg7 Rg7 26.Qb2 Rg8 27.g3 Qe7 28.e4 Qf8 29.e5 Qg7 30.Re2 Nf7 31.Nd3 Re8 32.Rfe1 Kc7 33.ed6 (33...Kb8 34.Qg7+-) 1–0. Plantet,Marc (1920) – Baron,Romuald (1650), St Quentin op 5th, 2002.

4.d4 Ngf6 5.Bd3=.

4.Nf3 b6 5.Be2 Bb7 6.0-0 Ngf6 7.a3 h5 8.c4 h4 9.h3 Nh7 10.Nc3 Ng5 11.Ng5 Qg5 12.Bf3 c6 13.d4 Rc8 14.b5 e5 15.bc6 Bc6 16.Bc6 Rc6 17.Qa4 Rc7 18.Nd5 Rb7 19.Qc6 Rb8 20.de5 Qd8 (20...Rh6 21.Rfd1 a6+-) 21.Nc7 Ke7 (21...Qc7 22.Qc7 Rh5+-) 22.ed6 (22.Qd6?!=) 1–0. b4_player – kaller, internet, 2013.

4.Nf3 e5=.

4.Nf3 Ne5 5.Ne5+- de5 6.Be5 Nf6 7.b5 Be7 (7...Nd7 8.Bc3+-) 8.Nc3 c5 (8...0-0!?+-) 9.bc6+- bc6 10.Qf3 Bb7 (10...Bd7 11.Be2+-) 11.Rb1+- Qd7 12.Bc4 0-0 13.e4 a5 14.0-0 (14.Na4 Rad8 15.0-0 c5+-) 14...Ba6 15.Ba6 Ra6 16.d4 Re8 17.Qd3 Qa7 18.Bb8 Rb8? (better 18...Qa8+-) 19.Rb8 Qb8 (19...Qb8 20.Qa6 c5+-). marekt (2300) – JPKN3 (1995), ChessWorld.net, 2016.

4.Nf3 f6 5.c4 Be7 6.Ng5 Nf8 7.Nf3 Bd7 8.d4 Qc8 9.Nc3 a6 10.Be2 Bd8 11.0-0 Ne7 12.e4 Neg6 13.d5 e5 14.c5 Be7 15.cd6 cd6 16.Rc1 Qd8 17.b5 f5 18.ba6 ba6 19.a4 Nf4 20.g3 Nh3 21.Kg2 g5 22.Kh3 fe4 23.Kg2 ef3 24.Bf3 Ng6 25.Ne4 h5 26.Kg1 h4 27.Bh5 Kf7 28.Qf3 Kg7 29.Bg6 Kg6 30.Qd1 hg3 31.fg3 Qb6 32.Rf2 Rhf8 33.Rcc2 Rf2 34.Rf2 Rf8 35.Qc2 Ba4 0–1. Chess4Win (1720) – peketsu1234 (1700), lichess.org, 2019.

4.Nf3 Ngf6 5.d4 Be7 6.c4 0-0 7.Be2 b6 8.0-0 Bb7 9.Nc3 Re8 10.Qb3 Bf8 11.h3 (11.d5 c5+=) 11...e5 12.de5 de5 13.Rfd1 Qe7 14.a3 e4 15.Nd4 Ne5 16.Nd5 Nd5 17.cd5 Qg5 18.Nc6 Nc6 (18...Bd6 19.Be5 Be5 20.Rac1+=) 19.dc6 Bc6 20.Rac1 Re6 21.Bg4 (better 21.Bc4!? Re7 22.Bf7 Rf7 23.Rc6+=) 21...Rg6=+ 22.Kf1 (22.g3 Rd8=+) 22...h5 (22...a5!?-/+) 23.Rc6=+ Rc6 24.Bd7 (24.Rd5 Qe7 25.Rh5 Re8=) 24...Rd6 (24...Rg6 25.g3 a5-/+) 25.Rd6-/+ Bd6 26.Qc3 (26.Bc6 Rd8-/+) 26...Rd8 27.Bc6 Be7 28.Be4 Bf6 29.Qc2 Bb2 30.Qb2 Qf6 (30...c5!? 31.Kg1-+) 31.Qf6-/+ gf6 32.Ke2 Kg7 (32...c5 33.bc5 bc5 34.Bd3-/+) 33.Bf3 (33.b5 Re8 34.Kd3 f5=+) 33...h4 (33...c5 34.Bh5 c4 35.Bf3-+) 34.Be4 (better 34.b5!?=+) 34...c5-/+ 35.b5 (35.bc5!? bc5 36.Bd3-/+) 35...c4-+ 36.Bc2 c3 37.Bd3 Rc8 (37...f5 38.a4-+) 38.Bc2 (38.Kd1!?-/+) 38...Rc5 39.a4 Rd5 40.Bd3 f5 41.f3 (41.g3-+) 41...Kf6 42.e4 (42.f4 Ke7 43.e4 fe4 44.Be4 Rd2 45.Ke1-+) 42...fe4 43.fe4 Rd4 44.Ke3 Ra4 (44...Ke5 45.Bb1-+) 45.Bc2 Ra3 (better 45...Rb4 46.Kd3-+) 46.Kd3 (46.Kd4 Ra5 47.Kc4 Ke5-+) 46…Ke5 0-1. Jaymarc_Gutierrez (2605) - LaMoMia (2770), Rated bullet game, lichess.org, 2023.

4.Nf3 Ngf6 5.d4 Be7 6.Bd3 c6 7.0-0 Qc7 8.a3 a5 9.c3 0-0 10.Nbd2 ab4 11.cb4 e5 12.de5 de5 13.Ne4 Ne4 14.Be4 f6 15.Qc2 h6?? 16.Rfd1 Kh8? 17.Nh4+- Kg8?? 18.Qc4 Rf7 19.Bg6 Nb6 20.Qf7 Kh8 21.Bf5 Bf5+- 22.Nf5 Rg8 23.Qe7 Qe7 24.Ne7 Re8 25.Ng6 Kh7 26.Nh4 e4 27.Nf5 Nc4 28.Rab1 Nb2 29.Rb2 Re5 30.Nd4 h5 31.Ne2 g5 32.Rbd2 Kg6 33.Rd4 b6 34.Nc3 Kf5 35.Rc4 c5 36.bc5 bc5 37.Rd5 Rd5 38.Nd5 Ke5 39.Nb6 f5 40.a4 Kd6 41.a5 Kc6 42.Rc1 Kb5 43.Ra1 Ka6 44.Nc4 f4 45.ef4 gf4 46.Kf1 h4 47.h3 Kb5 48.a6 Kc4 49.a7 Kd3 50.a8Q c4 51.Qd5 Kc3 52.Rc1 (52.Rc1 Kb2 53.Qd2 Ka3 54.Ra1 Kb3 55.Rb1 Ka3 56.Qa5) 1–0. Fournier,Frederic – carlosdiaz (1725), Active, 2007.

4.Nf3 Ngf6 5.Be2 Be7 6.0-0 b6 7.Nd4 Bb7 8.Bb5 a6 9.Nc6+= Bc6 10.Bc6 Rb8 11.Qe2 b5 12.a4 ba4 13.Ra4 0-0 14.Bd4 Nb6 15.Ra6+- d5 16.c3 Nc4 17.Ba7+- Qc8 18.b5 Bd6 19.Bb8 Qb8 20.d4 Ne4 21.f3 Nf6 22.e4 Be7 23.ed5 Nd5 24.Bd5 ed5 25.Qe7 Re8 26.Qc5 Qd8 27.Na3 Nd2 28.Rd1 Nf3 29.gf3 Qg5 30.Kh1 h6 31.Qc7 Re2 32.Rg1 Qh5 33.Ra8 Kh7 34.Rg4 Qh3 35.Rh8 Kh8 36.Qc8 Kh7 37.Rg7! Kg7 38.Qh3 Re1 39.Kg2 Re2 40.Kf1 (40.Kf1 Ra2 41.Qg2 Rg2 42.Kg2+-) 1–0. guest2119 – guest624, ICC, 2002.

4.d4 Nf6 5.Nd2 Ng4 6.Ngf3 Qh4?? 7.Nh4+- Be7 8.Nhf3 Nc6 9.b5 Na5 10.de5 de5 11.Bc3 e4 12.Ne4 0-0 13.Qd4 Nc6 14.Qg7 1–0. Double Wood – Doobi, ChessWorld.net, 2005.

4.d4 Nf6 5.de5 Ne4 6.Bd3 Ng5 7.ed6 cd6 8.h3 d5 9.Nf3 Ne6? 10.a3+/– Nc6 11.0-0 Bd6 12.c4 0-0?? 13.cd5+- Ne7 14.de6 fe6 15.Qc2 Nf5 16.Qc3 Qf6 17.Qd2 e5 18.Be4 Bd7 19.Nc3 Rae8 20.Nd5 Qg6 21.Rac1 h5 22.Nh4 Qg5 23.Nf3 Qg6 24.Nc7 Bc7 25.Qd7 Re7 26.Qd5 Qf7 27.Ne5 Be5 28.Be5 Rd7 29.Qf7 Rdf7 30.Bd5 Re8 31.Bf7 Kf7 32.Rc7 Re7 33.Re7 Ne7 34.Rc1 Ke6 35.Bg7 Nf5 36.Rc7 h4 37.Rb7 Kd5 (37...Kd5 38.Ra7 Kc6+-). markmooney – Doobi, ChessWorld.net, 2005.

4.Nf3 Be6 5.Nc3 Nd7 6.d4 ed4 7.Nd4 Ngf6 8.Be2 Be7 9.g4 c6 10.g5 Nd5? (better is 10...Ng8+/–) 11.Ne6+- fe6 12.Nd5 cd5 13.Bh5 g6 (13...Kf8 14.Qf3 Bf6+-) 14.Bh8 gh5 (14...Bg5 15.Be2+-) 15.Qh5 Kf8 16.Qh7 Bg5 (16...Qc8 17.Qg6 Bd8 18.Qh6 Ke7 19.Qh7 Ke8 20.g6+-) 17.Bg7 Ke7 (17...Ke8 18.Qh5 Ke7 19.Qg5 Kf7 20.Qh5 Ke7+-) 18.Bh6 Kf6 19.Bg5 Kg5 20.Rg1 Kf6 21.Qg7 Kf5 22.Qg6 Ke5 23.f4 1–0. b4_player – bambi, casual, 2013.

4.c4 Nd7 5.Ne2 Ng6 6.Ng3 Be7 (6...a5 7.b5=) 7.Bd3 (better 7.Bg7!? Rg8 8.Bh6+=) 7...e5 8.Bg6 (8.0-0 0-0=) 8...fg6 (8...hg6 9.d4=) 9.Qf3 Bf6 10.Ne4 (10.0-0 0-0=) 10...0-0=+ 11.Nf6 Rf6 (11...Nf6 12.d4=+) 12.Qd5 (12.Qg3 a5 13.a3 Rf7=) 12...Kh8 (12...Rf7 13.0-0=+) 13.0-0= Nb6 14.Qd3 Bf5 (14...Be6 15.Na3=) 15.Qb3= Qf8 (better 15...Rf8=) 16.Nc3?? (better 16.f4 Qe7 17.fe5 de5 18.d3=) 16...Bd3-/+ 17.Nd5? (better 17.c5 dc5 18.bc5 Qc5 19.Rfc1-/+) 17...Bc4-+ (17...Nc4? 18.Qd3 Nb2 19.Qc2+-; 17...Bf1?! 18.Rf1 Nd5 19.cd5-+) 18.Qc3 (18.Nb6 Bb3 19.Na8 Bc4-+ (19...Qa8?! 20.ab3 Rf7 21.b5-+)) 18...Bd5 (18...Nd5?! 19.Qc4 c6 20.f4=+) 19.Qc7 (19.a4-+) 19…Rc8 (19...Rc8 20.Qc8 Qc8-+) 0–1. aravind555 (1800) – anilm_nityo (1675), lichess.org, 2020.

4.c4 e5 5.Nc3 Ng6 (5...a5 6.b5=) 6.d4 Be7 7.de5 de5 8.Nd5 (8.Qd8 Bd8 9.Nf3 Bg4+=) 8...0-0 9.Ne7 (9.a3 Be6=) 9...Qe7=+ 10.a3 Be6 (10...a5 11.b5=+) 11.Qf3 (11.Nf3 Rd8 12.Qc2 Bg4=) 11...c6 (11...c5 12.b5=+) 12.Ne2 (better 12.Rd1!?=) 12...Bc4-/+ 13.Ng3 (13.Rc1 b5-/+) 13...Bd5 (13...Bf1 14.Nf1 a5 15.ba5 Ra5 16.e4-/+) 14.e4 Be6 15.Bd3? (15.Nf5 Bf5 16.Qf5 Rd8-/+) 15...Nf4?? (better 15...Nh4 16.Qh5 Ng2 17.Kd2 Rd8 18.Qe5 f6-+) 16.Be5=+ Nd3 (16...Ng6 17.Bb8 Rfb8 18.0-0=+) 17.Qd3= Nd7 18.Bb2 (18.Bd6 Qf6 19.0-0 Rfd8=) 18...Nb6 19.0-0 Bc4 (19...Rad8 20.Qc3 f6 21.Rad1=) 20.Qc3+= Threatening mate... how? 20...f6 21.Rfd1 Rad8 22.a4 (22.Qf3 Be6+=) 22...Rd1= 23.Rd1 Bf7 (23...Be6 24.a5 Na4 25.Qd4=) 24.a5 (24.Nf5 Qe6 25.a5 Na4=) 24...Na4 25.Qd2 Nb2 26.Qb2 a6 27.Nf5 (27.Rd4 Be6+=) 27...Qe6 (27...Qe4!? 28.Ne3 f5=+) 28.Ng3 (28.Rd4 Re8 29.f3 Qe5+=) 28...Qg4 (28...Qe7 29.Rd4+=) 29.Qd4 h5 (better 29...Be6+=) 30.Qd8?? (30.h3 Qf4+=) 30...Be6 (better 30...Rd8 31.Rd8 Kh7-+) 31.Qc8?? (better 31.h3 Qg5 32.Qe7 Bh3 33.gh3+-) 31…Qd1-+ (31...Qd1 32.Nf1 Rc8-+) 0–1. aravind555 (1770) – pidodeguzman03 (1760), lichess.org, 2020.

4.c4 f6 5.b5 (better 5.d4=) 5...g6 (5...e5 6.Qh5 g6 7.Qf3=) 6.a4 (better 6.Bf6!? Rg8 7.Nf3+-) 6...Bg7 7.Nf3 0-0 8.Be2 e5 9.0-0 d5 10.cd5 Nd5 11.Nc3 (11.e4 Nf4+=) 11...Nc3 12.Bc3 Be6 13.h3 (13.Qc2 c5+=) 13...Qe7 (13...c6 14.d4 cb5 15.ab5+=) 14.Qc2 Rd8 15.Rfd1 (15.d4 ed4 16.Bd4 a6+=) 15...Qe8 (15...Qf7!?=) 16.d4+- Nd7 (16...ed4 17.Bd4 c6 18.Rac1+=) 17.de5 Ne5 (17...fe5 18.a5+=) 18.Ne5 (better 18.Be5!? Rd1 19.Rd1 (19.Bd1?! fe5 20.Qc7 Bd5+-; 19.Qd1?! fe5 20.Qc2 Qe7+-) 19...fe5 20.Ng5+-) 18...fe5+- 19.Bf3 (19.Qb2 Bd5+-) 19...Rab8 (19...c6!?+=) 20.Rd8+- Qd8 21.Rd1 Qe7 22.Qe4 Bf5 23.Qd5 Kh8 24.g4 (better 24.a5+=) 24...e4? (better 24...Be6!? 25.Qe4 Qc5+=) 25.gf5 (25.Bg7 Kg7 26.Bg2 Be6 27.Qe5 Kg8 28.Be4 a6+-) 25...Bc3 (25...ef3 26.Bg7 Qg7 27.Qd8 Qf8 28.Qc7+-) 26.Be4+- Re8 (26...Qg5 27.Kf1 Qh4 28.fg6+-) 27.Bc2 (27.Bg2 Rb8+-) 27...Bg7 (better 27...gf5 28.Qb7 Qg5 29.Qg2 Qh5+-) 28.fg6 h6 (28...Rf8 29.Qb7 hg6 30.Bg6+-) 29.Qf7 (29.Qb7 Rf8+-) 29...Qf7 (29...Qg5 30.Kh1 Rf8 31.Qc7+-) 30.gf7 Do you see the mate threat? 30...Rf8 31.Rd7 Be5 32.Bb3 Bd6 (32...Kg7 33.Kf1+-) 33.Kg2 Kg7 34.Kf3 (34.f4 Bc5+-) 34...Kf6 35.Ke4 Kg7 (35...h5 36.a5 b6 37.a6+-) 36.f4 (36.Kf5 Bh2+-) 36...h5 (36...Rc8 37.Kf5+-) 37.Kf3 (37.Kf5 Bc5 38.e4 c6+-) 37...Kf6 (37...Rc8 38.Bd5 Rf8 39.e4+- (worse 39.Bb7 Rf7 40.Rf7 Kf7+-)) 38.e4 Kg7 39.e5 Bc5 40.Rc7 Bb6 (40...Bb4 41.Rb7 Rc8 42.Be6+-) 41.Rb7 (better 41.e6 Bc7 42.e7 Bb8+-) 41...h4 (41...Rc8 42.Ke4 Bc5 43.a5+-) 42.Re7 (42.e6 Bc5 43.e7 Be7 44.Re7 Kf6 45.Ra7 Kg7+-) 42...Kh6 (42...Bg1 43.Rd7 Rc8 44.Kg4+-) 43.Re8 (43.e6 Kg7 44.Ra7 Bd8+-) 43...Kg7 44.Rf8 (better 44.e6 Bc5+-) 44...Kf8 45.f5 Bc7 46.Ke4 Bd8 (46...Ba5 47.f6 Be1 48.e6 Bb4 49.a5 Bd6 50.b6 Ba3 51.ba7 Be7 52.a8Q Bd8 53.Qd8) 47.Kd5 (47.f6 Bb6 48.e6 Bc5 49.a5 Ba3 50.b6 Bd6 51.ba7 Be7 52.a8Q Bd8 53.Qd8) 47...Be7 (47...Kf7 48.f6 Ke8+-) 48.Ke6 White prepares f6 48...Bc5 49.f6 Bb4 50.Kf5 Bc5 (50...Be1 51.e6 Bb4 52.a5 Bd6 53.b6 Ba3 54.ba7 Be7 55.a8Q Bd8 56.Qd8) 51.e6 Bb4 (51...Ba3 52.a5 Bd6 53.b6 Ba3 54.ba7 Be7 55.a8Q Bd8 56.Qd8) 52.e7 (52.a5 Ba3 53.b6 Bb4 54.ba7 Be7 55.a8Q Bd8 56.Qd8) 52...Be7+- 53.fe7 Ke7 (53...Ke7 54.a5 Kd6 55.f8Q Kc7 56.Qe7 Kc8 57.Be6 Kb8 58.Qd8 Kb7 59.Bd5) 0–1. RichardSommer (2130) – carless_carlsen (2105), lichess.org, 2020.

4.Nf3 Nd7 5.c4 c6 6.d4 a6 (6...d5 7.Nbd2=) 7.Nbd2 b6 8.Bd3 Bb7 9.b5 (9.0-0!?+=) 9...ab5= 10.cb5 c5 11.dc5 (11.0-0 Nd5+=) 11...dc5 (11...Nc5!? 12.Bc2 Nd5=) 12.0-0+= Nf6 13.Bf6 (13.Nc4 Ned5+=) 13...Qd3= 14.Be7 (14.Ne5 Qb5 15.Ndc4+-) 14...Be7=+ (14...Ke7?! 15.a4=) 15.Qb3 (15.a4 0-0=+) 15...Qb3 (15...Qg6!?-/+) 16.ab3=+ (16.Nb3? Bf6 17.Rad1 Ra2-+) 16...0-0 (16...0-0-0 17.Nc4 Kc7 18.Nfe5=+) 17.Nc4= Bf3 18.gf3 Ra1 19.Ra1 Rb8 20.Ra6 Bd8 21.Kf1 (21.Ne5!?+=) 21...f6 22.Ke2 h6 (22...Bc7 23.Ra7 Bh2 24.f4=) 23.Kd3 (23.Ra7 Kf8+=) 23...Kh7 (23...f5 24.Ne5 Bc7 25.Nc6=) 24.e4 Kg6 25.e5 (25.Ra7 h5+=) 25...f5 (25...Bc7!?=) 26.Ke3 h5 27.f4 h4 (27...Rb7 28.Ra8 Bc7 29.Ra4+=) 28.Kf3 Kh6 (28...Rb7 29.Ra8 Rd7 30.Rb8+=) 29.Kg2 (29.Ra7!? g5 30.Nd6+-) 29...g5 30.fg5 Kg5 31.Kf3 f4 (better 31...Rb7=) 32.Ra7+- Kg6 33.Kf4 Bg5 34.Kg4 (better 34.Kf3!?+-) 34...Rf8= 35.Ra2 Rf4 36.Kh3 Rf3 37.Kg2 (37.Kg4!? Rf4 38.Kh3 Rf3 39.Kg4 Rf4=) 37...Rb3=+ 38.Nb6 Rb5 39.Ra6 (39.Nc4 Rb4 40.Rc2 Bf4=+) 39...Kf5-/+ 40.Nd7 Bf4 (40...c4 41.Rc6=+) 41.Ra8 (41.Rc6!? Rb2 42.Rc8-/+) 41...Be5-/+ 42.Rf8 Ke4 43.f3 (43.Kh3 Bd6 44.Rf7 Rb3 45.Kg4 Kd4-+) 43...Kd4-+ 44.Ne5 Ke5 45.Rh8 Rb4 46.Kh3 (46.Rc8 Rc4-+) 46...Kd5 (46...Rf4 47.Kg2-+) 47.Rh5 (47.Rd8 Kc6 48.Rc8 Kd6 49.Rd8 Kc7 50.Rd2-+) 47...e5 48.Kg2 (48.Rh8 Rd4-+) 48...Rf4 (48...c4 49.Rh4 c3 50.Rb4-+) 49.Kf2 (49.Rh8 c4 50.Rd8 Kc5-+) 49...c4 50.Ke3 (50.Ke2 c3 51.Rh8 c2-+) 50...c3 51.Rh8 c2 The mate threat is c1Q 52.Rd8 Kc4 53.Rc8 Kb3 54.Rb8 (54.h3 Rc4 55.Rc4 Kc4 56.Kd2-+) 54...Kc3 55.Rc8 Rc4 56.Rc4 Kc4 57.Kd2 Kb3 58.Kc1 Kc3 59.h3 Kd3 60.Kb2 Kd2 (60...Kd2 61.Ka3 c1Q 62.Kb4 Qc3 63.Kb5 Qf3-+) 0–1. sirgeshdb (1955) – Lonelywolf (1945), lichess.org, 2020.

4.Nf3 Nd7 5.d4 g6 6.c4 Bg7 7.Nbd2 0-0 8.Qc2 e5 9.Bd3 ed4 10.ed4 Bd4?? (better 10...Nc6 11.a3 Re8 12.Kf1 d5=) 11.Bd4 (11.Nd4 Ne5+-) 11...Nf5? (11...Nc6 12.Bc3 Re8 13.Kd1 a5 14.ba5 Nce5+-) 12.Bf6 1-0. unjournakamura (2365) - JCF_TLKS (1660), Hourly Crazyhouse Arena, lichess.org, 2021.

4.Nf3 Ng6 5.Be2 Nd7 6.0-0 c6 7.d3 e5 8.Nbd2 Be7 9.c4 0-0 10.a4 a6 11.b5 ab5 12.cb5 c5 13.Qb3 Nb6 14.h3 Be6 15.Qc2 Qd7 16.Nc4 Nc4 17.dc4 Nh4 18.Ng5 Bf5 19.Ne4 Ng2 20.Kg2 Bh3 21.Kg1 Bf1 22.Rf1 f5 23.Ng3 f4 24.ef4 ef4 25.Ne4 f3 26.Bd3 Qh3 27.Nf6 Rf6 28.Bh7 Kh8 29.Bf6 Qg2 0–1. Phomopsis – chato1788, lichess.org, 2018.

4.c4 e5 5.Nf3 Ne7 6.d4 Nd7 (6...ed4 7.ed4 Bg4 8.Be2+=) 7.Qb3 (7.Bd3 Nb6+=) 7...Ng6 (7...a5 8.ba5 e4 9.Nfd2+=) 8.Nc3 (8.Bd3 a5+=) 8...Be7 9.Nd5 c6 10.Ne7 Qe7 11.a4 (11.Be2 0-0+=) 11...e4 12.Nd2 f5 13.g3 (13.Be2 0-0=) 13...Nf6 14.Ba3 (14.h4 h5=) 14...Be6 15.Rc1 Qf7 (15...0-0 16.Be2=) 16.Qc3 0-0 17.b5 c5 (better 17...Qc7!?=) 18.dc5+/- dc5 19.Bc5 Rfc8 20.Bd4 Ng4 21.h3 Nh6 22.Qb4 (22.g4 Qe7+/-) 22...Rd8 23.c5 Rac8 24.Bc4 Bc4 25.Qc4 Qc4 (25...Rd5 26.0-0+/-) 26.Nc4 Nf7 27.0-0 Nf8 (27...Rc7 28.Rfd1+/-) 28.Rfd1 (28.Na5!? Ne6 29.c6 b6+-) 28...Ne6+/- 29.Nd6 Nd6 30.cd6 Rc1 31.Rc1 Rd6 32.Ba7 Kf7 33.Bc5 Nc5 (33...Rd5!? 34.Bb4 h5+/-) 34.Rc5+/- Rd1 (34...Kf6 35.a5+/-) 35.Kg2+- Ke6 (35...Kf6 36.g4 fg4 37.hg4+-) 36.Rc7 Rd7 37.Rc5 (better 37.Rd7 Kd7 38.g4+-) 37...g6 (37...Rd1 38.g4 fg4 39.hg4 Rd7+-) 38.g4 Rd2 (38...Kd6 39.Rc8+/-) 39.gf5+- gf5 40.Rc7 (better 40.Kg3 Ra2 41.Rc7+-) 40...Rd7?? (better 40...f4 41.ef4 e3+-) 41.Rc5 (better 41.Rd7 Kd7 42.a5+-) 41...Rd3?? (41...Rd2 42.Kg3 Ra2+-) 42.Rc4 (42.Kg3 Ra3+-) 42...Ra3 (42...Rd7 43.f3 Ke5 44.Rc5 Ke6 45.Kg3+-) 43.h4 (better 43.Rc7 h5 44.Rb7 Ra4 45.Kg3+-) 43...Rb3? (43...h5 44.b6+/-) 44.Rd4?? (44.Rc7 Rb2 45.Kg3 h5 46.Rb7 Ra2+-) 44...Rd3? (better 44...Rc3+/-) 45.Rd3+- ed3 46.Kf1 d2? (46...Kd5+-) 47.Ke2 d1Q 48.Kd1 Kd5 (48...b6 49.Ke2 Kd5+-) 49.Ke2 Kc5 (49...b6 50.Kf3 Ke5 51.h5+-) 50.e4! Kb4 (50...fe4 51.Ke3 Decoy) 51.ef5 Ka4 52.f6 Kb5 53.f7 Ka4 54.f8Q (54.f8Q b6 55.Qe8 b5 56.f4 Ka5 57.f5 Ka6 58.f6 h6 59.f7 Ka5 60.f8Q Ka4 61.Qe4 Kb3 62.Qfb4 Ka2 63.Qa8) 1-0. ClayPigeons (2190) - MaxKing (2140), Rated Bullet game, lichess.org, 2020.

4.c4 Qe7 5.b5 Bd7 6.a4 d5 (6...Nh6 7.Nc3+=) 7.Nf3 dc4 8.Bc4 Nh6 9.0-0 c6 (9...a6 10.Ba3 Qd8 11.Bf8 Rf8 12.Nc3+-) 10.Be2 (10.Nc3 cb5 11.Nb5 Qd8+-) 10...c5 (10...a6 11.Ba3 Qd8 12.Bf8 Kf8 13.ba6 Na6 14.d4+-) 11.Nc3 a6 12.d4 b6 13.dc5 bc5 (13...Qc5 14.Bd3+-) 14.Qc2 ab5 15.ab5 Ra1 16.Ra1 Qd8 17.Ra7 (17.Na4 Qc7+-) 17...Qb6+- 18.Ra1 (18.Ra3 Qb7+-) 18...Bd6?? (18...Qd8 19.Na4 Qc7+-) 19.Na4 Qb7 (19...Qc7 20.Rc1+-) 20.Nc5 Bc5 (20...Qc7 21.Rc1 Nf7 22.Nd4 Bc5 23.Qc5 Qc5 24.Rc5+-) 21.Qc5 Qc8 (21...Nf5+-) 22.Qc8 Bc8 23.Ra8 0-0 (23...Kd7 24.Rb8 Kc7 25.Ra8+-) 24.Rb8 e5 (24...Bd7 25.Rf8 Kf8 26.b6+-) 25.b6 Nf5 (25...Kf7+-) 26.b7 Bb7 27.Rb7 (27.Bc4 Bd5 28.Bd5 Kh8 29.Rf8) 27...Nd6 (27...Rd8 28.Ba3 h6 29.g4+-) 28.Ra7 (28.Rd7 Ne4+-) 28...Kh8 (28...Rb8 29.Bc1+-) 29.Ne5! fe5 30.Be5 Ne4 (30...Ne8 31.Ra8 Rg8+-) 31.Bg7 Kg8 32.Bc4 Rf7 33.Rf7 (33.Bh6 Kh8 34.Ra8 Rf8 35.Rf8) 33...Nd6+- 34.Rd7 (better 34.Rf6!? Kg7 35.Rd6 h5+-) 34...Nc4 35.Bh6 Ne5 36.Ra7 (better 36.Rg7!? Kf8 37.Rg5 Kf7 38.Re5 Kg6 39.Re6 Kf7+-) 36...Kh8 37.Ra8 1–0. RichardSommer (2130) – amirhassan (1970), lichess.org, 2020.

4.d4 g6 5.c4 Bg7 6.Be2 Ne7 7.Nf3 c6 8.0-0 Nd7 9.a4 0-0 10.Nbd2 e5 11.de5 de5 12.Ne4 Nb8 13.Qd8 Rd8 14.Rfd1 Nd7 15.Nd6 Bf8 16.Nc8 Rac8 17.c5 Kg7 18.Bc4 a5 (better is 18...b6+/–) 19.Bc3 (better is 19.Be6!? Rc7 20.b5 Nc5 21.Rd8 Ne6 22.Rdd1+=) 19...ab4 (19...Nd5!? 20.Bd5 cd5 21.Rd5 ab4 22.Bb4 Nc5 23.Rd8 Rd8=) 20.Bb4+= Nf5? (20...Nd5!? 21.Ba5 Nc7+=) 21.Ba5 (21.Be6 Nc5 22.Bc8 Rc8 23.Bc5 Bc5 24.Rd7 Ne7+-) 21...b6 (better is 21...Bc5!? 22.Bd8 Rd8+/–) 22.cb6 Ra8?? (better is 22...Nc5 23.Rd8 Rd8+-) 23.Bc3 (better is 23.b7 Ra5 24.Rd7 Rd7 25.b8Q+-) 23...Nb6+= 24.Rd8 Rd8 25.Be6 Nd6 26.Ba5 Rb8 27.Bb6 Rb6+= 28.a5 Ra6 29.Nd2 Be7 30.Nc4 Nc4 31.Bc4+/– Ra7 32.a6 Bb4 33.Kf1 c5 34.Ke2 h5 35.f3 g5 36.h3 Kg6 37.e4 f5 38.ef5 Kf5 39.Bd3 Kf6 40.Ke3 Bc3 41.Bc4?? Bd4 42.Ke4 h4 43.Rb1+- Bc3?? 44.Rb7 Ra8 45.a7 Rd8 46.Bd5 Ba5 47.Rb8 Rd5 48.Kd5 Bc7 49.Rc8 Bb6 50.a8Q (50.a8Q Bd8 51.Qc6 Kg7 52.Rd8 e4 53.Rd7 Kf8 54.Qc8#) 1–0. Fournier,Frederic (1745) – Nik0, ChessOK.com, 2012.

4.Qh5 g6 5.Qh4 Nd7 6.Bd3 Bg7 7.Nf3 Ne7 8.Ng5?? fg5-+ 9.Qg5 Bb2 10.Nc3 Ba1 11.0-0 Bc3 12.dc3 Nf5 13.e4 Qg5 14.ef5 gf5 15.g3 f4 16.Re1 Ne5 17.Kf1 Nd3 18.cd3 fg3 19.hg3 Rf8 20.Re4 Qg3 21.Re2 Qd3 22.a4 Qc3 23.b5 e5 24.a5 Bh3 25.Kg1 Rg8 26.Kh2 Rg2 27.Kh1 Qc1 28.Re1 Qe1 0–1. elsh1403 – ksysiu12, kurnik, 2011.

4.Qh5 g6 5.Qh4 Be7 6.f4 f5 7.Qf2 Bf6 8.c3 c6 9.Nf3 d5 10.d4 Nd7 11.Ne5 Ne5 12.de5 Be7 13.a3 a6 14.c4 b5 15.cd5 cd5 16.Nd2 Qd7 17.Nf3 Bb7 18.Nd4 Bd8 19.Rc1 Bb6 20.Be2 Bd4 21.ed4 h5 22.0-0 Rc8 23.Rc8 Qc8 24.Rc1 Qd7 25.Rc5 Ne7 26.Bf3 Nc6 27.h3 Qe7 28.Rc2 Kf7 29.Rc5 Rc8 30.Rc2 Na7 31.g4 hg4 32.hg4 Rc2 33.Qc2 Nc6 34.g5 Kg7 35.Qh2 Kf8 36.Qh6 Qg7+= 37.Kf2 Qh6 38.gh6 Kg8 39.Bd1 Kh7 40.Bc3 Kh6 41.a4 g5 42.Ke3 g4 43.ab5 ab5 44.Be2 Ba6 45.Kf2 Kh5 46.Kg3 Na7 47.Bf1 Bb7 48.Be2 Bc6 49.Bf1 Bd7 50.Be2 Nc8 51.Bf1 Nb6 52.Be2 Na4 53.Bb2?? Nb6 54.Bc3-/+ Nc4 55.Bf1 Ne3 56.Be2 Nc2 57.Bd3 Na3 58.Bb2 Nc4 59.Bc3 Bc6 60.Bc4 bc4 61.Bd2 Bb5 62.Bc3 Ba4 63.Bd2 Bb5 64.Bc3 Ba6 65.Bd2 Bb5 ½–½. elsh1403 (1610) – ebolowa, kurnik, 2011.

4.Qh5 g6 5.Qh4 Bg7 6.Nf3 h5 7.b5 g5 8.Qa4 Ne7 9.Bc4 0-0 10.0-0 Bd7 11.Qb3 d5 12.Be2 g4 13.Nh4 c6 14.c4 cb5 15.cd5 ed5 16.e4 Bc6 17.Bb5 Bb5 18.Qb5 de4 19.Qc4 Kh7?? 20.Qe4+= f5 21.Qe6?? Bb2-+ 22.Nc3 Bc3 23.dc3 Nbc6 24.Rad1 Qc8?? 25.Qd6?? Qd8 26.Qe6 Qc8?? 27.Rd7+= Kh8?? 28.Rfd1 Rg8?? 29.Qh6 1–0. elsh1403 – ksysiu12, kurnik, 2011.

4.a3 Be7 5.Nf3 0-0 6.c4 c6 7.Qc2 b6 (7...e5 8.Nc3=) 8.d4 Bb7 9.Bd3 Nbd7 (9...c5 10.Nbd2=) 10.g4 (10.0-0 c5+=) 10...Ng4 11.Bh7 Kh8 12.Rg1 Nh6 (12...f5 13.Bg6 Bh4 14.Nh4 Qh4-/+) 13.Bf5?? (better 13.Bd3+=) 13...ef5 14.Qf5 (14.d5 Bf6 15.dc6 Bc6-+) 14...Nf6 (14...Nf5 15.Nc3-+) 15.Qh5?? (15.Qg5 Rg8 16.Qh4-+) 15...d5 (better 15...Nh5 16.Nbd2 a5-+) 16.Qg6 (16.Qg6 fg6 17.Ne5-+). unjournakamura (2410) - Realterminatorxxl (2100), Casual Crazyhouse game, lichess.org, 2021.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7 8.Nc3 Be7 9.Nf3 0-0 10.h3 c6 11.Be2 Qb6 12.0-0 cb5 13.Nb5 White gets in control 13...Bb5 14.Qb1 Nbd7 15.Bb5 Nc5 16.Bf6 Bf6 17.d4 Na6 18.Be2 Qb1 (better 18...Qc6!?+=) 19.Rb1+- Rb8?? (better 19...b5+-) 20.Ba6 b6 21.c4 Bd8 22.d5 ed5 23.Nd4 Bf6 24.Nc6 Re8 (24...Ra8 25.Rb6 dc4 26.Bc4+-) 25.cd5 Bd8 26.Nd8 Rd8 27.Rb6 h5 28.f4 g6 29.Bd3 Kg7 30.Kf2 Rd7 31.e4 f5 (31...Rd8 32.Ke3+-) 32.ef5 Kf6 (32...gf5 33.Bf5 Rd8 34.Rb7 Kf6 35.g4 hg4 36.hg4+-) 33.fg6 h4 34.g3 (34.g3 hg3 35.Kg3+-) 1–0. marekt – lefou, net–chess.com, 2020.

4.b5 e5 5.c4 Be7 6.Nf3 Bg4 7.Nc3 a6 8.h3 Bh5 9.Be2 ab5 10.cb5 c6 11.0-0 c5 12.g4 Bg6 13.Nh4 Nfd7 14.Ng6 hg6 15.Bf3 Rh3 16.Bb7 Ra7 17.Kg2 Rh4 18.Bf3 Nf6 19.Rh1 g5 20.Qc2 Nbd7 21.Rh4 gh4 22.a4 h3 23.Kh3 Ng8 24.Qb3 Bg5 25.Nd5 Ndf6 26.b6 Ra6?? (26...Rd7+-) 27.Nc7 Kf8 28.Na6 e4 29.b7 c4 (29...Nd7 30.Be4 Nb8 31.Nb8 Qb8+-) 30.b8Q ef3 31.Qd8 Ne8 32.Bg7! Kg7 33.Qg5 Kf8 34.Qc4 (34.Qb8 f5 35.Nc7 fg4 36.Kg4 Ngf6 37.Qf6 Kg8 38.Qe8 Kh7 39.Qeg6) 34...Ne7 (34...Ngf6 35.Qc8 Nh5 36.Qh5 Ke7 37.Qh8 d5 38.Qce8 Kd6 39.Qf6) 35.Qh6 (35.Qh6 Ng7 36.Rb1 Nc6 37.Qh8 Ke7 38.Rb7 Kf6 39.Rf7 Ke5 40.Qg7) 1–0. b4_player – kaller, internet, 2013.

4.b5 g6 5.a4 Bg7 6.Nf3 0-0 7.Be2 Nbd7 8.0-0 Re8 9.d4 e5 (9...a6 10.Na3+=) 10.c4 e4 11.Nfd2 Nf8 12.Nc3 h5 (12...c5 13.Nb3+=) 13.Qc2 e4 draws heavy fire 13...Bf5 14.a5 a6 15.c5 (15.ba6 ba6 16.Rfb1 Rb8+=) 15...d5 16.c6 (16.ba6 ba6 17.Rfb1 Ne6+=) 16...bc6= 17.ba6 (17.bc6 Qd6=) 17...g5 (17...c5!? 18.Nb3 c4=+) 18.Na4 Qd7 (18...Bg4 19.Bg4 Ng4 20.Ba3+=) 19.Nc5+/- Qc8 20.Ba3 g4 (20...Bg4 21.Bg4 Qg4 22.Rfb1+/-) 21.Qb3 (21.Qa4 h4+/-) 21...N8h7 (21...Ne6 22.Rfc1+/-) 22.Qb7 Qd8 (22...Ng5 23.Qc6 h4 24.Rfb1+/-) 23.Qc6+- Ng5 (23...h4 24.Rfc1+-) 24.Rfc1 Nf3? (24...h4 25.Nb7 Qc8 26.Qc7 Qc7 27.Rc7+-) 25.Nf3 (better 25.gf3!? gf3 26.Bb5 Qc8+-) 25...gf3 (25...ef3 26.gf3 Qb8 27.Ra2+-) 26.Bf1 (26.gf3 ef3 27.Bf3 Ne4 28.Ne4 de4+-) 26...Bg4 (26...fg2 27.Bg2 (27.Kg2 Ng4 28.h3 Qh4-/+) 27...Ra7 28.Rab1+-) 27.g3 Qc8 28.Rab1 Bh3 29.Bb5 Bg2 30.Nd7 Ng4? (30...Nd7 31.Qd7 Qd7 32.Bd7 Red8+-) 31.Qd5 Ra6 (31...c6 32.Rc6 Qd8 33.Bc4+-) 32.Qh5 (32.Nb6 Qe6 33.Be8 Qe8 34.Rc7 Qe6+-) 32...Rg6 (32...Nf2 33.Kf2 (33.Ba6?! Qa6 34.h4 Bh3+-) 33...Ra5 34.Bb4+-) 33.a6 (33.Bc4 Qd7 34.Qg6 Nh6+-) 33...Ree6 (33...Nh6+-) 34.Ne5 (better 34.Bc4!? Nf2 35.Kf2 Rh6+-) 34...Re5?? (34...Ne5 35.a7 Rh6 36.Rc7 A) 36...Rh5?? 37.Rc8 Kh7 38.h4+- (38.de5?? Rh2 39.Rh8 Bh8 40.Kh2 Rh6 41.Kg1 Rh1); B) 36...Qd8+-) 35.de5+- Ra6 (35...Rh6 36.Rc7! Rh5 37.Rc8 Kh7+-) 36.Ba6 Qa6 37.Qg4 (37.Rb8 Qc8 38.Rc8 Bf8 39.Rf8 Kg7 40.Rf7 Kg8 41.Qh7) 37...Qa7 (37...c5 38.Rb8 Kh7 39.Qh5 Qh6 40.Qf7+-) 38.Rc7! Qc7 (38...Qc7 39.Bd6 Decoy) 39.Bd6 (39.Bd6 Qd8 40.Rb8 Qb8 41.Bb8+-) 1-0. Bostonbliz (2485) - Ashruh (2455), Rated Bullet game, lichess.org, 2022.

4.Bb5 c6 5.Be2 e5 6.a3=.

4.Bb5 c6 5.Be2 Be7 6.Nf3 Qb6 7.a3 a5 8.b5 cb5 9.Bd4 Qc6 10.Nc3 0-0 11.Nb5 Qc7?? 12.Nc7+- (12.Nc7 Ra6 13.Na6 Na6 14.Ba6 ba6 15.Bf6 Bf6 16.Rb1+-) 1–0. marekt – guest, internet, 2007.

4.Bb5 c6 5.Be2 Rg8 6.Nf3 g6 (6...e5 7.0-0=) 7.0-0+= Bg7 (7...e5 8.Nc3+=) 8.Nc3 a5 9.b5 cb5 10.Nb5 Bd7?? (better is 10...Nc6+/–) 11.Nd6+- Ke7 12.Ba3 Nc6 (12...Nd5 13.Nb7 Ke8 14.Nd8 Ba1 15.Nf7+-) 13.Nb7 Nb4 14.Nd8 Rgd8 (14...Kd8 15.c3 Nc6 16.d4+-) 15.c3 Ng4 (15...Nfd5 16.Rb1+-) 16.d4 e5 17.cb4 ed4 18.Nd4 ab4 19.Bb4 Ke8 20.Nf5! Bf6 (20...gf5 21.Qd6) 21.Qd6 Ra7 (21...Ba4 22.Ng7! Bg7 23.Qe7) 22.Qf8 1–0. kamret (2230) – 4movecheckmate, GameColony.com, 2003.

4.Bb5 Bd7 5.Be2 a6 6.Nf3= Be7 7.a3 0-0 8.0-0 Bc6 9.d3 Nbd7 10.Nd4 e5 11.Nc6+= bc6 12.c4 d5 13.Qa4 c5 14.cd5 Nd5 15.Qc6+/– N5f6 16.Bc3 cb4 17.ab4 Bd6 18.Na3 Qe7 19.Rfb1 Nb6+= 20.Bf3 Rab8 21.Nc4 Nc4 22.Qc4 Qe6 23.Ra6 Qc4 24.dc4 e4 25.Be2 Rfe8 26.b5 Be5 27.Be5 Re5 28.Rc6 Rb7 29.c5 Nd7 30.Rd1 Nf8 31.Bc4 g6 32.h3 Kg7 33.Rd8 Ne6? 34.Be6 Re6 35.Re6 fe6 36.Rd7 Kf6 37.b6! Rb8 38.Rc7 Ke5 39.b7 Kd5 40.c6 Kc5 41.Rc8! Kb6 42.Rb8 Ka7 43.c7 (43.c7 Ka6 44.c8Q Kb6 45.Ra8 h6 46.b8Q) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.Bb5 Bd7 5.Be2 Be7 6.a4 0-0 7.c4 (7.b5 e5=) 7...Nc6 8.b5 Ne5 (8...Nb4 9.Nf3=+) 9.Nf3 Nf3 10.Bf3 e5 (10...c6!?=) 11.Bb7 Rb8 12.Bf3 a6 13.0-0 (13.Qc2+=) 13...Be6 (13...c6!?=) 14.Be2 c6 15.Nc3 (15.f4 e4+/–) 15...cb5 (15...d5!? 16.cd5 Nd5+=) 16.ab5+/– ab5 17.cb5 d5 18.d4 e4 19.Qb3 Bd6 20.Ba3 Qc7 21.Bd6 Qd6 22.Ra6?? Qc7 23.b6 Qb7 24.Na4 Nd7 25.Rb1 Bg4?? 26.Bg4+- Qa6 27.b7 Nf6+= 28.Bd1 Nd7 29.Nc5 Nc5 30.dc5+- Rfd8 31.h3?? Rd7-/+ 32.c6? Qc6-+ 33.Qa4 Qa4 34.Ba4 Rdb7 35.Rb7 Rb7 36.Bc6 (36...Rb1 37.Kh2-+). TIROLOCO – Orval, caissa.com, 2004.

4.Bb5 Nbd7 5.Nf3 a6 6.Bd7 Qd7 7.c4 b6 8.Bf6= gf6 9.0-0 Bb7 10.Nc3 Be7 11.d4 Rg8 12.d5 e5 13.Ne1+= 0-0-0 14.b5 a5 15.Qh5 Rg7 16.e4 Rdg8 17.f4 Kb8 18.f5 Qe8 19.Rf2 Rg5 20.Qh3 h5 21.Nf3 Rg4 22.Qh5 Qf8 23.Qh3 Qg7 24.Ne1 Rh8 25.Qe3 Qh7 26.Nf3 Bf8 27.Ne2 Bh6 28.Qd3 Rhg8 29.Rb1 Qg7 30.g3 Qh7 31.Rb3 Rh8 32.Qc2 Bf4 33.Nfd4 Bg3 34.Rg3 Rg3 35.Ng3 ed4 36.Qd2 Rg8 37.Qd4 Qh4 38.Rg2 Qg4 39.Qf6 Qd1 40.Kf2 Qc2 41.Kf3 Qc4 42.Re2 Qd3 43.Re3 Qd1 44.Kf2 Qc2 45.Ne2 Qa2 46.Qf7 Rc8 47.f6 Qa4? 48.Qe7 (48.Qe7 Qa1 49.Rf3+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.c4 a6 5.Nf3 h6 6.Be2 Be7 7.0-0 0-0 8.Nc3 b6 9.a4 Bb7 10.d4 Ne4 11.Ne4 Be4 12.Nd2 Bg6 13.Bf3 d5 14.cd5 ed5 15.Qb3 c6 16.b5 f5? (better is 16...Re8!?+/–) 17.bc6+- Bf7 18.Rfc1 Bd6 19.g3 Bc7 20.Bg2 a5 21.Nf3 Na6 22.Qb5 Be6 23.Ne5 Be5 24.de5 Nc7 25.Qb6 Rb8 26.Qd4 Rb4 27.Qd2 Qb8 28.Ba3 1–0. Vuojolainen,Kari – Hanninen,Olli, Joensuu We JoeSK op, 2004.

4.c4 Nbd7 5.Ne2 b6 (5...d5 6.c5=+) 6.Ng3 (6.b5 Bb7=) 6...Bb7 7.Nc3 a6 8.Nce2 (8.a3 c5=) 8...h6 9.Ng1 (9.d4 Be7=+) 9...Be7 (9...d5 10.cd5 Bd5 11.a3=+) 10.Nf3 c5 11.bc5 Nc5 12.Be2 0-0 13.0-0 Qc8 14.d4 Nce4 15.Qc2 (15.Ne4 Be4 16.Nd2 Bc6=) 15...d5 (15...Ng3 16.fg3 b5 17.Rac1=+) 16.Bd3 (16.Ne4!? Ne4 17.Rac1=) 16...Ng3=+ 17.fg3 dc4 18.Bc4 b5 Black gets strong play along the open c–file 19.Bd3 Qc2 20.Bc2 Nd5 21.Kf2 Rac8 22.Be4 (22.Rac1 Nb6 23.Ne5 Bd6-/+) 22...a5 (22...f5 23.Bb1-/+) 23.Nd2 (23.g4 b4 24.Rfc1 g6=+) 23...Bb4 (23...f5 24.Bd3-/+) 24.Nb3 (24.Nf3 f5 25.Bd3 Bd6=+) 24...Ba8 (better 24...f5 25.Bd3 a4-/+) 25.Bf3?? (25.a3 a4=+) 25...Rc7 (better 25...Rc2 26.Kg1 Rb2-+) 26.Rfc1 Rfc8 27.Rc7 Rc7 28.Rc1 Rc1 29.Bc1 Bb7 (29...a4 30.Nc5=) 30.Bd2 Bc8 (better 30...Bd2 31.Nd2 Bc8=) 31.Nc5?? (better 31.Ke2+=) 31...Bd2-+ 32.Bd5 ed5 33.Ke2 (33.e4 de4 34.Ne4 Bb4-+) 33...Bb4 34.Nd3 Bd6 35.Kf3 (35.Nc5 Bf5-+) 35...b4 (35...Bf5 36.Ke2-+) 36.Ke2 (36.e4 Ba6 37.Nb2 Bc4 38.Nc4 dc4-+) 36...Ba6 37.Kd2 Bc4 38.Nc1 a4 Black prepares the advance b3 39.Kc2 b3 (better 39...Bc7 40.Kd2-+) 40.ab3 ab3 41.Nb3 Bf1 42.Nd2 (42.Nc5 Bg2 43.Nb7 Bb4-+) 42...Bg2 43.Nf1 (43.Kd1-+) 43…Bf1 (43...Bf1 44.Kd2 Bb4 45.Kd1 Kh7-+) 0–1. aravind555 – pentrez (1795), lichess.org, 2019.

4.c4 g6 5.Nf3 Bg7 6.e4 0-0 7.e5 (7.Qc2!?=) 7...Nfd7-/+ 8.d4 de5 9.de5 b6 (9...Nc6 10.Qe2 Nb4 11.a3-/+) 10.Be2 (10.Qe2!?=) 10...Bb7 11.0-0 Nc6 Now all is on e5 12.Nbd2 (12.b5 Nce5 13.Ne5 Ne5-/+) 12...Nce5 13.Ne5 Ne5 14.Rb1 (14.Qc2 Qh4-/+) 14...Qd6 (14...Qg5 15.g3 Qh6 16.f4-/+) 15.c5 (15.Qc2 Rad8 16.Rfd1 Qc6-/+) 15...bc5 16.bc5 Qc6 (16...Qd5!? 17.Nf3 Qd1 18.Rfd1 Nf3 19.Bf3 Bf3 20.Bg7 Kg7 21.gf3 Rab8-/+) 17.Be5?? (better 17.Nf3=+) 17…Qg2 (17...Be5 18.Bf3 Qc5 19.Rb7+-) 0–1. aravind555 – Endarmir, lichess.org, 2018.

4.Be2 b6 5.Nf3 Bb7 6.0-0 Qe7 7.c4 Nbd7 8.d4 Ne4 9.Nbd2 Nef6 10.Bd3 g6 11.e4 Bg7 12.e5 (better is 12.Qe2!?+/–) 12...de5=+ 13.de5 Nh5 (13...Ng4 14.Qe2 Qb4 15.Rfb1=) 14.Re1 (14.a3 g5+=) 14...0-0 (14...Qb4 15.Qc2=) 15.Be2 (15.Qb3!?+/–) 15...f6 16.ef6 Nhf6 17.Bf6 (better is 17.b5!?+=) 17...Nf6=+ 18.Rb1 Rae8 19.Ne5 Nh5 (better is 19...Ne4!? 20.Ne4 Be5=) 20.Bh5 gh5 21.Qh5?? (better is 21.Qe2+=) 21...Rf5-+ 22.Qg4 Kh8?? (22...Rg5 23.Qd4 Rd8 24.Qd8 Qd8-+) 23.f4 Be5-/+ 24.Re5 Rf6?? 25.Rbe1 Rg8 26.Rg5 Rfg6 27.Rg6 Rg6-/+ 28.Qd1? Rg2-+ 29.Kf1 Qh4 30.Ne4 Qf4?? 31.Kg2= Be4 32.Re4 Qe4-+ 33.Qf3 Qc2 34.Kg3 Qg6 35.Kf2 h5 36.Qf8=+ Kh7 37.Qe7 Kh6 38.Qc7 Qc2 39.Kg3 Qc3 40.Kg2 (40...Qe3 41.c5=+). bashful – WhiteMamba, caissa.com, 2004.

4.Nf3 g6 5.c4 d5 6.cd5 ed5 7.Bb5 c6 8.Be2 Bb4 9.0-0 Bf8 10.Qb3 Bg7 11.d3 Nbd7 12.Nbd2 0-0 13.Rab1 Nc5 14.Qc2 Ne6 15.e4 de4 16.de4 Qc7 17.e5 Nd5 18.Qe4 Nc5 19.Qc4 b6 20.Ba3 Nf4 21.Qf4 Be6 22.Rbc1 Ba2 23.Bc5 bc5 24.Rc5 Rae8 25.Rfc1 Bd5 26.Bc4 Qb6 27.Bd5 cd5 28.Rd5 Qb2 29.Nc4 Qb4 30.g3 f6 31.ef6 Rf6 32.Qg4 Qb7 33.Rd7 Qf3 34.Qf3 Rf3 35.Nd6 Ref8 36.Rcc7 Bh6 37.Rh7 Rf2 38.Rh6 Rf1 39.Kg2 R1f2 40.Kh3 R8f5 41.Rg6 Kf8 42.Nf5 Rf4 43.Rh6 1–0. Chess4Win (1750) – ItuTheCol (1720), lichess.org, 2020.

5.Qb3 0-0 6.Nf3 Re8 (6...e5 7.d4 a5 8.de5 de5 9.Ne5 Bb4 10.Nc3=+) 7.d4= Nfd7 (7...a5 8.a3=) 8.Be2 (8.Bd3 c5+=) 8...Nf8 (8...a5 9.a3=) 9.Nc3+= Nbd7 10.0-0-0 (10.0-0!?+=) 10...a5 11.b5 b6 (11...c6 12.Bd3=) 12.h3 (12.Nd2 Bb7=) 12...Bb7 13.Rdg1 f6 (13...c6 14.Kd1=+) 14.g4 (better 14.d5=) 14...e5?? (14...c6 15.Kd1=) 15.Rh2?? (better 15.c5!? Kh8 16.c6 ed4 17.ed4 a4+-) 15...e4?? (better 15...c6!?=) 16.Nd2 (16.c5 Kh8 17.c6 ef3 18.cb7 Rb8 19.Bf3 h6+-) 16...d5 (16...c6!?+/-) 17.cd5+- (worse 17.Nd5 Bd5 18.cd5 Bd6+/-) 17...Bb4 (17...Bd6 18.Rhg2 Ng6 19.Nde4 a4+-) 18.Kb1 (18.Nde4 Bd6 19.f4 Ng6+-) 18...Qe7? (18...Bc3 19.Bc3 Nb8 20.d6 Ne6 21.dc7 Qc7 22.Rhg2+/-) 19.Rc1?? (19.Nde4 Bd6 20.Ng3 Qf7+-) 19...Qf7? (19...Qd6 20.Rg2 a4 21.Qc4 Bc3 22.Bc3 (worse 22.Qc3 a3 23.Ba1 Bd5+=) 22...Bd5 23.Bb4+=) 20.Bc4?? (20.Nde4 Bd6 21.Nd6 cd6+-) 20...Bd6? (better 20...Bc3!? 21.Qc3 Bd5 22.Bd5 Qd5+/-) 21.Rg2 a4 22.Na4 (better 22.Qc2+-) 22...Ra4? (better 22...Qg6+/-) 23.Qa4+- Ra8 (23...Bd5 24.Bd5 Qd5 25.Qc4+-) 24.Qb3 (better 24.Qc2 Bd5 25.Ne4 Ra5+-) 24...Kh8 (24...Re8 25.h4+-) 25.Ne4 Ng6 26.f4 Ne7 (26...Qe7 27.Qc2+-) 27.Nd6 cd6 28.e4 h6 (28...Kg8 29.Rgc2+-) 29.Bd3 Rd8 (29...Ng6 30.Rf2 Qe7+-) 30.Bc4 (30.Qa3 Qg8+-) 30...Nb8?? (30...Ra8 31.Rgc2 Qe8+-) 31.Rcg1 (31.Rgc2 Kg8+-) 31...Nd7 32.h4 Re8 (32...Rc8 33.f5+-) 33.g5 fg5 34.fg5 (34.hg5 h5+-) 34...h5 35.Rf1 Qg6 36.Bd3 Rf8 (36...Ra8 37.Rgf2 Qe8 38.Qd1+-) 37.Rgf2 Rf2 38.Rf2 Qe8 39.Qd1 (better 39.Ba3 Nd5 40.Bd6 Qg6+-) 39...Ng6 (39...Kg8 40.Ba3+-) 40.Qh5 Kg8 41.e5 Ndf8 (41...Bd5 42.Qg6 Qg6 43.Bg6 de5 44.Be8+-) 42.Rf8! Nf8 (42...Qf8 43.Bg6 Deflection (43.Bg6 Remove defender; 43.Bg6 Overloading); 42...Nf8 43.Qe8 Pinning (43.Qe8 Deflection); 42...Kf8 43.Bg6 Remove defender) 43.Qe8 Bc6 (43...g6 44.e6 Bd5 45.Qf7 Kh8 46.Qf8 Kh7 47.Bg6 Kg6 48.Qf7) 44.g6 (44.bc6 b5 45.g6 de5 46.Qf7 Kh8 47.Qf8) 44...Be8+- 45.Bf5 (better 45.h5 Bd7+-) 45...Ng6 46.ed6 Nf8 47.Ba3 (47.Be6 Kh8 48.a4 Bg6 49.Kc1 Bd3+-) 47...Nd7 (47...Bb5 48.Kc2 Bd7+-) 48.Be6 Kf8 49.Bc5! g6 (49...bc5 50.Bd7 Decoy; 49...Nc5 50.dc5 Combination) 50.Bb4 (50.a4!? g5 51.a5 gh4+-) 50...Kg7 51.Bd2 Bf7 (51...Nb8 52.a4 Bd7+-) 52.Bg5 (better 52.Bd7 g5 53.Bc6 Bg6 54.Kb2+-) 52…Be8 (52...Be8 53.a4 Nb8+-). ClayPigeons (2160) - Flowol1210 (2300), Rated Bullet game, lichess.org, 2021.

5.b5 c5 6.Nf3 Bd7 7.a4 0-0 8.Be2 h6 9.0-0 d5 10.d3 a6 11.h3 ab5 12.cb5 b6 13.Nc3 Bc8 14.Nh2 Nbd7 15.Ng4 Nh7 16.Bf3 Ndf6 17.Ne2 Qc7 18.Nf6 Bf6 19.Bf6 Nf6 20.Ng3 e5 21.Qb3 Be6 22.Qb2 Rfe8 23.Rfc1 Qd6 24.Nh5 Nh5 25.Bh5 e4 26.de4 de4 27.Be2 Qe7 28.Bc4 Rf8 29.Be6 fe6 30.Qe5 Rf5 31.Qe4 Raf8 32.Rc2 Qf6 33.Rf1 Kh8 34.Kh2 Rd8 35.f4 e5 36.Rcf2 ef4 37.Rf4 Rf4 38.Rf4 Qd6 39.Qf5 Ra8 40.Qe4 Rf8 41.h4 Rf4 42.ef4 Qf4 43.Qf4 c4 44.Qc4 1–0. Abdullaevich (1760) – topcop (1705), lichess.org, 2018.

5.Qc2 0-0 6.Nf3 Re8 (6...e5 7.d4=+) 7.d4= Nfd7 (7...c5!?=) 8.Bd3+= Nf8 9.h4 (9.0-0 Ng6+=) 9...Nbd7 10.g4 (10.Nc3 Nf6=) 10...a5 11.b5 b6 (11...e5 12.g5=) 12.g5 (12.Be4 Rb8+=) 12...Bb7= 13.Nbd2 e5 (13...Rc8 14.Qc3=) 14.d5 (14.Be4 Be4 15.Ne4 ed4 16.Nd4 Qc8+=) 14...Nc5 15.Bf5 g6 (15...a4 16.Ne4=) 16.Bg4 Bc8 17.Rg1 (17.Bc8 Rc8 18.e4 Nfd7+=) 17...Bg4 (17...f5 18.gf6 Bf6 19.Bc8 Rc8 20.h5=) 18.Rg4+= Qd7 19.Rg1 f5 (19...Qd8 20.e4+/-) 20.gf6+/- Bf6 21.0-0-0 (21.h5 Bg7+/-) 21...Kf7 (21...Qe7 22.h5+/-) 22.Ng5 Bg5 23.hg5 Ke7 (23...Qe7 24.Rg3+=) 24.f4 Kd8 (24...ef4 25.ef4 Qh3 26.Rh1 Nd3 27.Kb1+/-) 25.fe5 de5 26.e4 (26.Ba3 Qh3 27.Bc5 bc5+-) 26...Kc8 27.Rdf1 Kb7 28.Rf6 (28.Nf3 Qd6+/-) 28...Qg7 (28...Qe7 29.Nb3+=) 29.Rgf1+/- Nfd7 30.Rf7 Qg8 31.Nb3 Rf8 32.Qf2?? (32.Nc5 Nc5 33.R7f6 Nd7+=) 32...Rf7 (better 32...Nd3 33.Kc2 Nf2 34.R7f2 Qg7-+) 33.Qf7+/- Qf7 (33...Qd8!? 34.Nc5 Nc5+=) 34.Rf7 Rh8 (34...Nb3 35.ab3 Nc5 36.Re7+-) 35.Nc5 (35.Kc2 Kc8 36.Nc5 bc5+-) 35...Nc5 36.Be5?? (better 36.Kc2 Re8 37.d6+-) 36...Nd3-+ 37.Kd2 Ne5 38.Re7 Nc4 39.Kd3 Nd6 40.e5 Nb5 (40...Nf5 41.Re6-+) 41.d6 (41.Kc4!? Na3 42.Kb3-+) 41...Rd8 42.Ke4? (42.a4 Nd6! 43.ed6 Rd6 44.Ke4 b5 45.ab5 a4-+) 42...Nd6! 43.ed6 Rd6 44.Rh7 Rd2 45.Ke5?! (45.Rh6 Ra2 46.Rg6 a4-+) 45...Ra2 (45...Rf2!? 46.Rd7-+) 46.Kf6 Rf2 47.Kg6 Rg2?? (better 47...a4 48.Rh3 b5-+) 48.Kf6-/+ Rg5?? (48...a4 49.g6 a3=) 49.Kg5+/- a4 50.Kf4 Ka6 (50...b5 51.Ke5 Kb6 52.Kd4+-) 51.Ke3 (51.Rc7 Ka5 52.Ke4 b5+-) 51...c5 52.Rh1 (52.Rh6!? Ka5 53.Kd3 Kb5+-) 52...b5 (52...Ka5 53.Kd3 b5 54.Rh4+=) 53.Ra1 (53.Ke4!? Ka5 54.Kd5+/-) 53...Ka5 54.Kd3 b4 (54...Kb6+=) 55.Kc2?? (better 55.Rh1 Kb5 56.Rh8+-) 55...Kb5 56.Kd3 c4 0-1. ClayPigeons (2145) - Flowol1210 (2310), Rated Bullet game, lichess.org, 2021,

5.Be2 0-0 6.Nc3 h6 7.f4 Nbd7 8.Nf3= Nb6 9.0-0 Bd7 10.b5 c5 11.a4+= a5 12.Qc2 Qc7 13.Nd1 Rfd8 14.Nf2 Bc8 15.Bd3 Nbd7 16.Ne4 b6 17.Ng3 Bb7= 18.Qc3 Bf8 19.Qc2 Re8 20.Ne4 Ne4 21.Be4 Be4 22.Qe4 Nf6 23.Bf6+/– gf6 24.Nh4 Bg7 25.Rac1 f5= 26.Qd3 Rad8 27.Rf3 Qe7 28.Rh3 Qf6 29.Nf3 Qb2 30.Rb1 Qf6 31.Rg3 Kh7 32.Qc2 Qe7 33.Rh3 Bf6 34.Ne1 Rg8 35.e4 Bd4 36.Kh1+= Qf6 37.ef5 ef5 38.Nf3 Rg4 39.Nd4 cd4+= 40.Rf3 Re8 41.Qd3 Re4 42.Rbf1 Qe6 43.h3 Rg6 44.R3f2 h5 45.Qf3+= Kh6 46.Qd3 h4 47.Qc2 Qc8 48.d3+= Re3 49.Qd1 Qb7 50.Rf3+= Rg3 51.Rg3 Rg3 52.Rf3 Qe7 53.Kh2 Rg6 54.Qg1 Qe2= 55.Qf2 Qe7?? 56.Qd4+- (56.Qd4 Qd8 57.Re3+-) 1–0. Devis,Wim – Cools,Eric, Beveren, 1995.

5.Nf3 0-0 6.d4 d5 7.Qb3 a6 8.Bd3 dc4 9.Bc4 Nc6 10.a3 b6 11.0-0 b5 12.Bd3 Bb7 13.Nbd2 Bd6 14.Rfd1 Ne7 15.Rac1 Ng6 16.Qc2 Nd7 17.e4 Rc8 18.e5 Be7 19.Be4 c6 20.Nb3 Nb8 21.Nc5 Bc5 22.dc5 Qe7 23.Rd6 Rfe8 24.Rcd1 Nf8 25.Bc1 h6 26.Nd4 Nfd7 27.f4 Nf8 28.a4 Qc7 29.f5 ef5 30.Bf5 Re5 31.Bc8 Qc8 32.Nf3 Qf5?? 33.Qf5 Rf5 34.Rd8 Nbd7 35.R1d7 1–0. Solari,Pablo (1660) – Pintos,Luis, Montevideo URU, 2nd Latinoamerican Cup, 2011.

5.b5 0-0 6.a4 b6 7.Be2 Bb7 8.c4 Nbd7 9.d4 d5 10.0-0 c6 11.Nc3 dc4 12.Bc4 cb5 13.Bb5 Rc8 14.Qd3 Bf3 15.gf3 e5 16.Ne4 ed4 17.Bd4 Nc5 18.Nc5 bc5 19.Bf6 Bf6 20.Rad1 Qd3 21.Rd3 c4 22.Rd2 c3 23.Rc2 Rfd8 24.Rfc1 (24.f4 Kf8=+) 24...g6 25.f4 Kg7 26.Kg2 Rd2 (26...Ra8 27.e4 Bd4 28.Rd1=+) 27.Kf3 Rc2 28.Rc2 Rd8 29.Ke4 Rd1 30.f5 g5 31.Kf3 (31.f4 gf4 32.Rg2 Kh6 33.Kf4 Rb1=+) 31...h5 (31...Rh1 32.Kg3=+) 32.Be2 (32.Ke4 Rb1=+) 32...Ra1 33.Bb5 Be5 (better 33...Rh1 34.Kg2 Rb1=+) 34.e4?? (better 34.Ke4 Kf6 35.f4 gf4 36.ef4 Re1 37.Be2=) 34...Bh2 (better 34...Rh1!? 35.Bc4-+) 35.Rc3 Be5 (35...g4 36.Ke3 Be5 37.Rc5 Re1 38.Kd2 Re4 39.Bd3 Bf4 40.Kd1 Ra4 41.f6 Kh6 42.Bc4 Ra1 43.Ke2-+) 36.Rc5 (better 36.f6 Kg6 37.Rc5 g4 38.Ke3 Kf6 39.f4 gf3 40.Kf3 Ra3 41.Kg2-+) 36...Kf6 (better 36...g4 37.Ke3 Re1 38.Kd2 Re4-+) 37.Rc6= Kg7 38.Ke2?? (38.Rc5 g4 39.Ke3 Re1 40.Kd2 Re4 41.Rc4 Rd4 42.Ke3-+) 38...g4 (better 38...h4 39.f4 h3 40.fg5-+ (40.fe5 h2 41.Ke3 h1Q-+)) 39.Ra6? (better 39.Rc5 h4 40.Re5-+) 39...h4 40.Ra7 (40.f6 Bf6 41.Ra7-+) 40...h3 41.Bc4 (41.f6 Kg6 42.Ra8 Kf6 43.Rh8-+) 41...h2 42.Rf7 (42.f6 Kf6 43.Rf7 Kg6 44.Ra7 h1Q 45.Ra6 Kg5 46.Rg6 Kg6 47.Bf7 Kf7 48.Kd3 Qf1 49.Kd2 Ra2 50.Ke3 Qe2) 42...Kh6 43.Re7 (43.Rh7 Kh7 44.Kd2 h1Q 45.Bg8 Kg8 46.f6 Qd1 47.Ke3 Ra3) 43...h1Q 44.Re5 (44.Re6 Kg5 45.Rg6 Kf4 46.Rg4 Kg4 47.Ke3 Qf3 48.Kd2 Qc3 49.Ke2 Re1) 44...Qd1 45.Ke3 Qf3 (45...Ra3 46.Bb3 Rb3 47.Kf4 Qf3) 46.Kd4 Rd1 47.Kc5 Qf2 48.Kc6 Qc2 49.Rc5 (49.Kb7 Qc4 50.Re6 Kh5 51.Rf6 Rd7 52.Kb6 Rc7 53.Rc6 Rc6 54.Kb7 Qa6 55.Kb8 Rc8) 49...Rd4 (49...Qa4 50.Kb7 Rd7 51.Rc7 Rc7 52.Kc7 Qc4 53.Kd6 g3 54.f6 g2 55.f7 Qf7 56.e5 g1Q 57.Kc6 Qc4 58.Kb7 Qg7 59.Kb6 Qgc7) 50.Kb5 Qe4 51.Rc6 Kg5 52.Rc5 Rc4! 53.Rc4 (53.Rc4 Qb1 Double attack) 53...Qc4! 54.Kc4 g3 55.a5 (55.Kd4 g2 56.f6 Kf6 57.Kc4 g1Q 58.Kb5 Qa1 59.Kb4 Ke5 60.a5 Kd5 61.Kb3 Qa5 62.Kc2 Kc4 63.Kc1 Qa2 64.Kd1 Kd3 65.Ke1 Qe2) 55...g2 56.Kc5 g1Q 57.Kb5 (57.Kc6 Kf5 58.Kb7 Qg7 59.Kb6 Qg6 60.Kb7 Qe6 61.a6 Qd7 62.Kb6 Qc8 63.Kb5 Ke5 64.Ka5 Qc5 65.Ka4 Qc4 66.Ka3 Qa6 67.Kb4 Qd6 68.Kc3 Qc7 69.Kb3 Kd4 70.Kb2 Qc3 71.Ka2 Qb4 72.Ka1 Kc3 73.Ka2 Qb2) 57...Qa7 58.a6 Kf5 59.Ka5 (59.Kc4 Qa6 60.Kd4 Qd6 61.Kc4 Qe6 62.Kd4 Qe4 63.Kc3 Ke5 64.Kb2 Qb4 65.Kc2 Ke4 66.Kd1 Qb2 67.Ke1 Ke3 68.Kd1 Qd2) 59...Kf6 (59...Ke5 60.Kb5 Ke4 61.Kc4 Qa6 62.Kc5 Qa3 63.Kc6 Qa8 64.Kc5 Qd5 65.Kb6 Ke5 66.Ka7 Qa5 67.Kb8 Ke6 68.Kb7 Kd6 69.Kb8 Kc6 70.Kc8 Qc7) 60.Kb5 (60.Kb4 Qb6 61.Kc4 Qa6 62.Kc3 Qa3 63.Kd2 Qd6 64.Kc3 Qc5 65.Kb2 Ke5 66.Kb3 Kd4 67.Kb2 Qc4 68.Ka3 Qb5 69.Ka2 Kc3 70.Ka3 Qb3) 60...Ke7 (60...Ke5!? 61.Kc4 Qa6 62.Kc3 Qa4 63.Kd3 Qd4 64.Kc2 Qc4 65.Kd2 Kf4 66.Ke1 Qc2 67.Kf1 Kf3 68.Ke1 Qe2) 61.Kc6 Kd8 62.Kb5 (62.Kd5 Qa8 63.Kc4 Qa6 64.Kb3 Qd3 65.Kb2 Kd7 66.Ka1 Qc3 67.Kb1 Kc6 68.Ka2 Kb5 69.Kb1 Kc4 70.Ka2 Qd2 71.Ka3 Qf2 72.Ka4 Qa7) 62...Kc8 (62...Kc7!? 63.Ka5 Qb6 64.Ka4 Qa6 65.Kb3 Qb5 66.Kc2 Qc4 67.Kd2 Kb7 68.Ke3 Qb5 69.Kf2 Qe8 70.Kf3 Qf8 71.Ke3 Kc7 72.Ke4 Qa8 73.Kd4 Kc6 74.Ke4 Qa6 75.Ke3 Kd5 76.Kf4 Qc4 77.Kf3 Qe4 78.Kg3 Ke5 79.Kh3 Kf4 80.Kh2 Qc2 81.Kg1 Kf3 82.Kf1 Qf2) 63.Kc6 (63.Kb4 Qb6 64.Kc4 Qa6 65.Kd4 Kd7 66.Ke3 Qe6 67.Kf3 Qf7 68.Ke3 Qe8 69.Kd4 Kc6 70.Kc3 Qe3 71.Kb2 Qe2 72.Kb3 Kd5 73.Kc3 Kc5 74.Kb3 Qd2 75.Ka3 Kc4 76.Ka4 Qb4) 63...Kd8 (63...Qa6 64.Kd5 Qa2 65.Ke4 Kd8 66.Kd3 Qb1 67.Kd2 Qb2 68.Kd3 Qb4 69.Kc2 Ke7 70.Kd3 Qb5 71.Ke3 Qe5 72.Kd3 Qd5 73.Kc3 Kd6 74.Kc2 Qc4 75.Kd2 Ke5 76.Ke3 Qe4 77.Kf2 Kf4 78.Kg1 Qe2 79.Kh1 Kf3 80.Kg1 Qg2) 64.Kd5?? (64.Kb5 Kc7 65.Ka5 Qb6 66.Ka4 Qa6 67.Kb3 Qf1 68.Kb2 Qb5 69.Ka1 Qa5 70.Kb2 Qd2 71.Kb1 Kc6 72.Ka1 Kd5 73.Kb1 Kd4 74.Ka1 Kc3 75.Kb1 Qb2) 64...Kc8 65.Ke4?? (65.Kc6 Qa6 66.Kd5 Qa2 67.Kd6 Kb8 68.Kc6 Qc4 69.Kd6 Qe4 70.Kd7 Qf5 71.Kd6 Kb7 72.Ke7 Kc6 73.Ke8 Kd6 74.Kd8 Qd7) 65...Qa6 66.Kf3 Qa7 67.Kg2 (67.Ke4 Qc7 68.Kf5 Qc5 69.Ke4 Qc2 70.Ke5 Qh2 71.Kf5 Kd7 72.Ke4 Qe2 73.Kd5 Qe3 74.Kc4 Kc6 75.Kb4 Qd3 76.Ka4 Kc5 77.Ka5 Qb5) 67...Qb7 68.Kh2 Qc7 (68...Kc7 69.Kg3 Qe4 70.Kf2 Kd6 71.Kg3 Qe3 72.Kg2 Qe2 73.Kg3 Ke5 74.Kh4 Kf4 75.Kh3 Qc2 76.Kh4 Qh7) 69.Kh1 (69.Kg2 Qc6 70.Kg3 Qd7 71.Kf3 Qf5 72.Ke3 Qe6 73.Kd4 Kc7 74.Kc3 Qe3 75.Kb2 Qf3 76.Ka2 Kd6 77.Kb2 Qe2 78.Kb1 Kc5 79.Kc1 Kd4 80.Kb1 Kc3 81.Kc1 Qc2) 69...Qc6 70.Kh2 Qc5 (70...Qd6 71.Kg2 Kd7 72.Kf3 Qd3 73.Kf4 Ke6 74.Kg4 Ke5 75.Kg5 Qg3 76.Kh5 Kf5 77.Kh6 Qg6) 71.Kh1 (71.Kg3 Qc7 72.Kf3 Qc4 73.Ke3 Kd7 74.Kf3 Qd5 75.Ke3 Kd6 76.Ke2 Qe4 77.Kd2 Kc5 78.Kc3 Qe2 79.Kb3 Qd2 80.Ka3 Kc4 81.Ka4 Qb4) 71...Qc4 72.Kh2 (72.Kg2 Qe4 73.Kg3 Kd8 74.Kf2 Ke7 75.Kf1 Ke6 76.Kf2 Ke5 77.Kg3 Qe3 78.Kg2 Qe2 79.Kg3 Kf5 80.Kh3 Kf4 81.Kh4 Qg4) 72...Qb4 (72...Qc3 73.Kh1 Kd7 74.Kg2 Ke6 75.Kf1 Qd2 76.Kg1 Kf5 77.Kf1 Ke4 78.Kg1 Kf3 79.Kf1 Qf2) 73.Kh1 (73.Kg3 Kc7 74.Kf3 Qc3 75.Kf4 Qc1 76.Ke5 Qe3 77.Kf5 Kd7 78.Kf6 Qf4 79.Kg6 Ke7 80.Kh5 Qg3 81.Kh6 Kf6 82.Kh5 Qg5) 73...Qb3 (73...Qd4 74.Kg2 Kd7 75.Kg3 Qe3 76.Kg2 Qe2 77.Kh1 Kc6 78.Kg1 Kd5 79.Kh1 Ke4 80.Kg1 Kf3 81.Kh1 Qg2) 74.Kh2 Qb2 75.Kh1 (75.Kg3 Qc3 76.Kf4 Kc7 77.Kf5 Qh3 78.Kf6 Kd6 79.Kg5 Qe3 80.Kf5 Ke7 81.Kg6 Qe4 82.Kg5 Kf7 83.Kh5 Kf6 84.Kh6 Qg6) 75...Qa2 (75...Kd8 76.Kg1 Qd4 77.Kf1 Kd7 78.Ke2 Ke7 79.Kf3 Qd3 80.Kf2 Ke6 81.Ke1 Kf5 82.Kf2 Qd2 83.Kf3 Qe1 84.Kg2 Kg4 85.Kh2 Kf3 86.Kh3 Qg3) 76.Kg1 Qb2 (76...Qb2 77.Kh1 Qd2 78.Kg1 Qe1 79.Kh2 Qe5 80.Kg2 Kd7 81.Kf3 Ke7 82.Kf2 Kf7 83.Kg2 Kf6 84.Kf2 Kf5 85.Kf1 Qb2 86.Ke1 Ke4 87.Kd1 Kd3 88.Ke1 Qe2) 0-1. inSecOP (2600) - laurens97 (2605), Rated bullet game, lichess.org, 2023. (=1.b4 Nf6 2.Bb2 d6 3.e3 e6)

5.c4 0-0 6.Be2 d5 7.d4 Bb4 8.Nbd2 dc4 9.Bc4 c6 10.0-0 Be7 11.a4 Nbd7 12.a5 Nd5 13.Bd3 g6 (13...Nb4 14.Be2=+) 14.Ne4 Re8 (14...f5 15.Nc3=) 15.Qb3= Bf8 (15...f5 16.Nc3=) 16.Ne5 (16.Ba3 Ba3 17.Ra3 Qe7=) 16...Ne5 (16...f5 17.Ng3=+) 17.de5= Bg7 18.Rfd1 Qe7 19.Nf6 (better 19.Nd6!? Rd8 20.e4=) 19...Nf6-/+ 20.ef6 Bf6 21.Bf6 Qf6 22.Be4 e5 23.Qb4 Qe7 24.Qc3 Bg4 25.f3 Bf5 (25...Bd7 26.Rd2-/+) 26.Bf5 gf5 27.a6 ba6 28.Qc6 Rac8 (28...Qg5 29.Ra3-/+) 29.Qa6=+ Qc5 (29...Rc7 30.Rdc1=+) 30.Qd3 (30.Qa7!? Qa7 31.Ra7=) 30...e4 (30...f4 31.Re1-/+) 31.Qd4 (31.fe4 Re4 32.Ra3 Rc4-/+) 31...ef3 32.Qc5 f2 (better 32...Rc5 33.gf3 Re3 34.Ra7 Rc2-+) 33.Kf2+= Rc5 34.Ra7 Rc2 35.Kf3 Rc3 Attacks the isolani on e3 36.Re1 Kg7 37.Ra5 Re4 (37...Kf6!?=) 38.Rf5+/- Ra4 39.Rf4 Rf4 40.Kf4 Rc2 41.Kf3 Rc4 (41...f5+/-) 42.h4 (42.e4 Rc3 43.Re3 Rc2+/-) 42...Rc6? (42...Rh4!? 43.e4 Kf6=) 43.g3 (43.g4 h6+/-) 43...Rf6 44.Kg2 Re6 45.e4 Rg6 46.Kf3 Re6 (46...Rf6 47.Kg4+/-) 47.Ke3 (47.g4 h6+-) 47...f6 (47...Rg6 48.Kf4+/-) 48.Rf1 Kf7 49.Rf5 Ra6 50.Kf4 Ra3 (50...Ra1 51.g4 Kg6 52.h5 Kg7 53.Rd5+/-) 51.g4+- Ra4? (better 51...Kg6+-) 52.g5 Ra6 53.Rf6 Rf6 54.gf6 Kf6 55.Kg4 Ke6 56.Kg5 (better 56.h5 Ke5 57.Kf3+-) 56...Kf7?? (better 56...Ke5=) 57.Kh6+- Kg8 58.e5 Kf8 59.Kh7 Ke7 60.Kg6 Ke6 61.Kg7 Ke5 62.h5 Kf4 63.h6 1-0. Bostonbliz (2700) - JLRHei (2520), Casual bullet game, lichess.org, 2024. (=1.b4 Nf6 2.Bb2 d6 3.e3 e6)

5.c4 e5 6.a3 b6 (6...e4 7.Nd4+=) 7.Be2 (7.Nc3 a5+=) 7...Bb7 (7...e4 8.Nd4=) 8.0-0 (8.Nc3 0-0+=) 8...h6 (8...e4 9.Nd4+=) 9.d3 (9.Nc3 0-0+=) 9...Nbd7 (9...0-0 10.Nc3+=) 10.Nc3 Nh7 (10...0-0 11.Qc2+=) 11.d4 e4 (better is 11...0-0!?+=) 12.Nd2+- f5? (better is 12...Nhf6+-) 13.Bh5 Kf8 14.Bg6 c6 (14...Nhf6 15.Bf5 a5 16.Nde4 ab4 17.ab4 Ra1 18.Qa1+-) 15.Bf5 d5 (15...Nhf6 16.f3+-) 16.f3 ef3 17.Rf3 (17.Nf3 Ndf6 18.cd5 cd5+-) 17...Ndf6 18.c5 (18.h4 Bc8 19.Bc8 Rc8+-) 18...g5? (18...bc5 19.dc5 Ng5+-) 19.e4 Kg7 (19...g4 20.Rf2 g3 21.hg3 bc5 22.e5 cb4 23.ef6 Nf6 24.ab4+-) 20.e5 Nh5 21.Rf1 (21.Qc2 Nf8+-) 21...Qe8 22.Qg4 (22.g3 Bc8 23.Bc8 Rc8 24.cb6 ab6+-) 22...Bc8 (22...bc5 23.dc5 Ba6 24.Rf2+-) 23.Bc8 (23.b5 Bf5 24.Rf5 Rf8+-) 23...Rc8 24.Rf3 (24.b5!? Rf8 25.bc6 Nf4+-) 24...Rf8 25.Raf1 Rf3 (25...bc5 26.dc5 Rb8 27.Nb3+-) 26.Rf3 (26.gf3?! Nf4+/–; 26.Qf3?! bc5 27.bc5 Rb8+-) 26...Rd8 (26...bc5 27.dc5 Nf8 28.Nb3+-) 27.Ne2 (better is 27.b5!? cb5 28.c6 Qc6 29.Qh5 Rf8+-) 27...Qg6 28.Rh3 (better is 28.b5 Nf4 29.Nf4 gf4 30.Qg6 (30.Rf4?! Bg5+/–) 30...Kg6 31.cb6 (worse is 31.bc6 bc5 32.Rb3 cd4+/–) 31...cb5 32.ba7+-) 28...Nf4+/– 29.Nf4 (29.Rc3 bc5 30.dc5 h5 31.Nf4 hg4 32.Ng6 Kg6+-) 29...gf4 30.Qg6 (30.Qf4 Rf8 31.Qe3 Ng5+/–) 30...Kg6 31.Nf3 (31.Rc3!? Rc8 32.Nf3+/–) 31...bc5+= 32.dc5 (better is 32.bc5 Rb8 33.Bc3+=) 32...a5? (better is 32...Ng5 33.Ng5 hg5+=) 33.Nd4+- Rc8 (33...Ng5 34.Rd3 Rc8 35.Bc1+-) 34.Rf3 ab4 35.ab4 Bg5 (35...Ng5 36.Rf4 h5 37.e6+-) 36.Bc1 Ra8 (36...Nf8 37.Bf4 Bf4 38.Rf4+-) 37.Rf1 (37.Nc6 Ra1 38.Rf1 Nf8+-) 37...Ra1 (37...Ra6 38.Bf4 Bh4 39.Be3+-) 38.Nc6 Kf5 (38...Nf8 39.Nd4 Ra4 40.Bd2+-) 39.Bb2 (39.b5!? Rb1 40.b6 Ke4+-) 39...Ra2 40.Rb1 (better is 40.Bd4+-) 40...Ke4 (40...f3 41.gf3 Be3 42.Kf1 Ng5+-) 41.e6 (better is 41.b5 f3 42.gf3 Kf3+-) 41...Kd3 42.e7 Ra8 43.Re1 Re8 44.Be5 (44.Re6!? Kc4 45.Be5 Kb5+-) 44...Kd2 (44...Kc4 45.Bd6 f3 46.gf3+-) 45.Ra1 1–0. Trip,R – de Kruyk,N, Barneveld, 2000.

5.Be2 0-0 6.c4 a5 7.b5 c6 8.a4 c5 (8...d5 9.0-0=) 9.0-0 b6 10.d3 Bb7 11.e4 d5 12.e5 Nfd7 13.cd5 Bd5 14.Nc3 Bb7 15.d4 cd4 16.Nd4 (16.Qd4 Bc5 17.Qg4 Qc7+-) 16...Nc5 (16...Ne5 17.Nb3-/+) 17.Nc6 (better 17.Bf3+=) 17...Nc6-/+ 18.bc6 Bc6 19.Qc2 Rc8 20.Rad1 Qc7 21.Nb5 (21.f4 Rfd8-/+) 21...Bb5 (21...Qb7!? 22.f3 Bd5-+) 22.ab5 (22.Bb5 Rfd8=+) 22...Rfd8 23.Rd8 Rd8 24.Rd1 g6 (24...Rd1 25.Qd1 Qd8 26.Bd4-/+) 25.Rd8=+ Qd8 26.h3 Qd5 27.Bf3 (27.Bc3 Nb3 28.Qd3 a4-/+) 27...Qd3-+ 28.Qd3 Nd3 29.Bd4 Bc5 30.Bc5 Nc5 31.Kf1?? (31.Be2-+) 31...a4 32.Ke1 (32.Be2 Nb3 33.Bd1 Nd2 34.Ke1-+) 32...a3 33.Kd1 a2 34.Kc1 a1Q (34...a1Q 35.Kd2 Qb2 36.Kd1 Na4 37.Ba8 Nc3 38.Ke1 Qe2) 0–1. Markzela (1760) – ehret (1845), lichess.org, 2020.

5.Rg1 0-0 6.g4 Nbd7 (6...e5 7.g5 Nd5 8.b5-/+) 7.g5=+ Nd5 8.h4 (8.a3 N5b6=+) 8...e5 (8...Nb4!? 9.Nc3 Nb6-/+) 9.a3=+ b5 (9...N5b6 10.h5=+) 10.c4 (10.Bb5!? Bb7 11.d4+=) 10...bc4=+ 11.Bc4 N5b6 12.Bb3 a5 13.b5 a4 14.Bc2 d5 (better 14...Bb7=+) 15.Ne5+/- Ne5 16.Be5 Bd6 17.Bb2 (17.Bh7 Kh7 18.Qh5 Kg8 19.Bg7 Kg7 20.Qh6 Kg8+-) 17...Nc4?? (better 17...Re8+/-) 18.Bh7!+- Kh7 19.Qh5 Kg8 20.Bg7! Kg7 (20...Kg7 21.Qh6 Combination) 21.Qh6 Kg8 22.g6 Qh4 23.Qh5 (better 23.Qh4 fg6 24.Rg6 Kf7 25.Qh5+-) 23...Qh5-+ 24.gf7 Kh7 25.Nc3 Rf7 (25...Ne5 26.d3 Nf3 27.Kd1 Ng1 28.Kd2 Nf3 29.Kc1-+) 26.Ne2 Bb4! 27.ab4 c6! 28.Ng3 (28.bc6 Ne5 Decoy) 28...Qe5 (28...Qf3 29.Ne2 Qf2 30.Kd1 Nb2 31.Kc2 Qe2 32.Rh1 Kg7 33.Rag1 Kf8 34.Rh8 Ke7 35.Rh4 Bf5 36.Kc1 Nd3 37.Kc2 Nf4 38.e4 Qe4 39.d3 Qd3 40.Kb2 Qb3 41.Ka1 Qa3) 29.Rh1 Kg8 30.bc6 Qa1 31.Ke2 Qe5 (31...Bg4 32.f3 Bf3 33.Kf2 Bh1 34.Nf5 Rf5 35.Kg3 Qe5 36.Kh4 Rh5 37.Kg4 Qg5) 32.Rg1 Kf8 (32...Bg4 33.Kd3 Qb2 34.b5 Qd2) 33.Nf1 Qf6 (33...Ba6 34.b5 Bb5 35.Rg8 Kg8 36.f4 Rf4 37.c7 Nb2 38.d3 Bd3 39.Kd2 Rf2 40.Kc1 Qc7) 34.Rg8 Kg8 35.f4 (35.b5 Bg4 36.f3 Bf3 37.Kf2 Be2 38.Kg3 Rg7 39.Kh3 Qh6) 35...Qf5 (35...Bg4 36.Kf2 Qh4 37.Ng3 Qh2 38.Ke1 Qg3 39.Kf1 Nd2) 36.Ng3 (36.Ng3 Qh7 37.Kd1 Qd3 38.Nf1 Bg4 39.Kc1 Qb3 40.b5 Qd1) 1-0. FeegLood (2255) - grasshopper (1615), Time forfeit, lichess.org, 2015.

4.Bc4 c6 5.Bb3 a6 6.a3 b5 7.Ne2 Nf6 8.0-0 Be7 9.Ng3 0-0 10.d3 Bb7 11.Qd2 d5 12.Qd1 Qc7 13.Nd2 Nbd7 14.Nf3 Rad8 15.h3 e5 16.Nf5 Rfe8 17.Ne7 Re7 18.Nh2 c5 19.bc5 Nc5 20.Ba2 d4 21.ed4 ed4 22.Ng4 Ng4 23.Qg4 Bc8 24.Qh4 Qe5 25.Rae1 Qe1 26.Re1 Re1 27.Kh2 Rde8 28.Bd4 Ne6 29.Be3 Ng5 30.Qf4 Be6 31.Be6 Ne6 32.Qg4 Kh7 33.c4 bc4 34.Qc4 Rd1 35.Qa6 f5 36.g3 g5 37.Qa4 f4 38.Qe8 fe3 39.Qe6 ef2 40.Qf7 Kh8 41.Qf2 Rd3 42.Qf6 Kg8 43.Qg6 Kf8 44.Qd3 h5 45.Qf5 Ke7 46.Qg5 Kd6 47.Qh5 Kc6 48.g4 Kd6 49.Kg3 Ke6 50.Kf4 Kd6 51.Qb5 Kc7 52.Ke5 Kd8 53.Qb7 Ke8 54.Kf6 Kd8 55.Ke6 Ke8 56.Qb8 1–0. Abdullaevich – DaVoJ (1760), lichess.org, 2017.

4.Nf3 a6 5.c4 Nd7 6.Be2 Ngf6 7.d4 g5 8.d5 e5 9.h3 Bg7 10.Nfd2 Nf8 11.Bh5 Nh5 12.Qh5 Ng6 13.Ne4 Bd7 14.Nbc3 b6 15.0-0 0-0 16.a3 Be8 17.Qe2 f5 18.Ng3 f4 19.ef4 ef4 20.Nh5 Ne5 21.Ng7 Kg7 22.Ne4 Bg6 23.f3 Qe8 24.Rae1 Kh7 25.c5 bc5 26.bc5 Be4 27.Qe4 Kg8 28.Be5 de5 29.Qe5 Qe5 30.Re5 Rae8 31.Rfe1 Re5 32.Re5 Rf7 33.Kf2 Kg7 34.Re6 a5 35.Ra6 Rd7 36.Ra5 Rd5 37.g3 Rd2 38.Kg1 Rd1 39.Kf2 Rd2 40.Ke1 fg3 41.Kd2 g2 42.Ra7 g1Q 43.Rc7 Kg6 44.Rc6 Kh5 45.a4 Qf2 46.Kc3 Qf3 47.Kb4 Qc6 0–1. Chess4Win (1715) – anadir117 (1735), lichess.org, 2020.

4.Nf3 e5 5.a3 b6 6.c4 Bb7 7.Be2 g5 8.0-0 g4 9.Ne1 h5 10.d4 e4 11.d5 Rh7 12.f3 f5 13.fg4 fg4 14.Rf4 Qe7 15.Qc2 Nd7 16.Re4 Ne5 17.Nd3 Nf6 18.Ne5 de5 19.Re5 Qe5 20.Be5 Nd5 21.Qh7 0-0-0 22.cd5 Bd6 23.Bd6 Rd6 24.Qh8 Rd8 25.Qh5 Bd5 26.Qf5 Kb8 27.Ba6 g3 28.hg3 Bb7 29.b5 c6 30.a4 c5 31.Nc3 Bc8 32.Bc8 Rc8 33.Qe5 Rc7 34.Nd5 1–0. Chess4Win – Almakra, lichess.org, 2019.

4.Nf3 Ne7 5.d4 d5 6.c4 Nd7 7.c5 a6 8.Nc3 g5 9.e4 Nf6 10.ed5 ed5 11.Ne5 Nf5 12.Be2 Be6 13.0-0 h5 14.b5 a5 15.b6 c6 16.Bc1 g4 17.Bg5 Bg7 18.f3 gf3 19.Bf3 h4 20.Re1 Qe7 21.Bg4 0-0-0 22.Bf5 Bf5 23.Nc6 Qd7 24.Nd8 Qd8 25.Nb5 Qd7 26.Nd6 Kb8 27.Qd2 Qa4 28.Nf5 Nh5 29.Ng7 Ng7 30.Bf6 Rg8 31.Qf4 Ka8 32.Bg7 Rg7 33.Qc7 Qd4 34.Kh1 Rg8 35.c6 bc6 36.Qc6 Kb8 37.Qc7 Ka8 38.Qa7 1–0. Chess4Win (1780) – Tappita (1790), lichess.org, 2020.

4.Qg4 a6 5.Bg7+= Be7?? 6.Bh8+- Nf6 7.Qg7 1–0. Wall,Bill – Ogando, chess.com, 2008.

4.d3 Be7 5.c4 Bd7 6.Nf3= 0-0 7.Be2 Nc6 8.b5= Nb8 9.0-0 a6 10.a4 ab5 11.ab5+= c6?? 12.Ra8+- cb5 13.cb5 Bb5 14.Na3 Bc6 15.Qc2 Qd7 16.d4 b5 17.d5 Ba8 18.Bb5 Qd8 19.Nc4 ed5=+ 20.ed5 Bd5 21.Ne3 Be4 22.Qb3 Bd5?? 23.Nd5+- Nd5 24.Qd5 Qb6. Pierred – ahmedgamalelashry, Chesspark, 2008.

4.Nf3 Ne4=+ 5.Bd3 (5.a3 Bd7=+) 5...Nf6-/+ 6.0-0 Be7 7.c4 0-0 8.Nc3 b6 (8...d5 9.a3-/+) 9.Ng5 (better 9.Qc2=+) 9...Nfd7?? (better 9...d5 10.cd5 h6-/+) 10.Bh7+- (10.Nh7?! Re8 11.Qh5 Ne5+=) 10...Kh8 11.Nf7! Kh7 (11...Rf7 12.Be4 Combination) 12.Nd8 Rd8 (12...Bd8 13.Qg4 Bb7 14.Qe6+-) 13.Qh5 (13.Nd5 Bf6 14.Qf3 ed5 15.Qh5 Kg8 16.Qd5 Kh8 17.Bf6 Nf6 18.Qa8 Bd7 19.Qa7 Ne8+-) 13...Kg8 14.Nd5! ed5 (14...ed5 15.Qd5 Double attack) 15.Qd5 Kf8 16.Rfe1 c6 (16...Re8 17.Qa8 a6+-) 17.Bg7! Kg7 (17...Kg7 18.Re7 Mate attack) 18.Re7 Kf8 (18...Kg6 19.Qe4 Kf6 20.Qe6 Kg5 21.Rg7 Kh5 22.Qh3) 19.Qf7 1–0. GuestJLXB – GuestVGQX, freechess.org, 2020.

4.e3 Nd7 5.Be2 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 Qe7 9.0-0 Nh6 10.c4 e5 11.d3 Qe6 12.Nbd2 Be7 13.e4 0-0 14.Nb3 c5 15.b5 Nf6 (15...f5!?=) 16.Ng5+= Qd7 17.Qd2 Nfg4 18.h3 Nf6 19.Bc3 Ne8 20.Nf3 f5 21.ef5 Nf5 22.Nh2 h6 23.Bg4 Bg5 24.Qe2 Qf7 25.Nf3 Be6 26.Ng5 hg5 27.Nd2 Nh4 28.Be6 Qe6 29.Nf3?? (better is 29.d4+/–) 29...Nf3 30.gf3 Qh3 31.Ra1 Rf3 (better is 31...Rf4 32.Qf1 Qf3-+) 32.Qf1 Qf5 33.Rd1? (33.Bd2-+) 33…Rf4 (33...Rf4 34.f3 Rf3-+) 0–1. Fournier,Frederic (1850) – petrel (1635), Active, 2007.

4.e4 Bb7 5.Nc3 Qd7 6.d4 Nc6 7.a3 g6 8.Bd3 Nf6 9.0-0 Bg7 10.e5 (10.d5 Ne7+=) 10...Ng4 (better is 10...de5!? 11.Ne5 Qd4=) 11.h3 Nh6 12.Re1 0-0-0 13.Ne4 d5 (13...de5!? 14.de5 Nf5+=) 14.Nf6+/– Bf6 15.ef6 Nf5 16.Ne5 (better is 16.b5!? Na5 17.Ne5+/–) 16...Ne5+= 17.de5 Kb8 18.a4 d4 19.Qe2 Qd5 20.f3 (20.Qf1 Nh4 21.Be4 Qd7+/–) 20...Ne3+= 21.Bc1 (better is 21.Be4 Qc4 22.Bb7 Qe2 23.Re2 Kb7 24.Bd4 Rd4 25.Re3 Rb4 26.Rd3+=) 21...h5?? (21...Qe5 22.a5+=) 22.Bb2?? (better is 22.Be3 de3 23.Qe3+-) 22...Qe5+= 23.c3 dc3-/+ 24.Bc3?? Qc3-+ 25.Qe3 Rd3 26.Qf4 Bf3! 27.Rac1 Qb2 28.Qc7-/+ Ka8 29.gf3 Qd4 30.Kh1 Qd5 31.Re4? Rd1 32.Rd1 Qd1 33.Kg2 Qa4 34.Rd4 Qa2 35.Kg3= h4 36.Kg4?? Qg2-+ 37.Kf4 Qh2 38.Ke4 Qc7 (38...Qc7 39.Kd3 Rc8 40.Rc4 Qc4 41.Ke3 Qb3 42.Kf4 Rc4 43.Ke5 Qb4 44.f4 Qc5) 0–1. adamant – Idris, playchess.de, 2003.

4.a3 Bd7 5.e3 f6 6.c4 Qe7 7.Qb3 g6 8.Be2 Bg7 9.0-0 Nh6 10.Nc3 0-0 11.d4 Kh8 12.d5 Ne5 13.Nd4 ed5 14.Nd5 Qd8 15.Nf3 c6 16.Ne5 fe5 17.Nc3 Be6 18.Rad1 b5 19.Qc2 bc4 20.Ne4? Bf5-/+ 21.Qc4 d5 22.Qc6 Be4 23.f3 Rc8 24.Qb5 a6! 25.Qa6 Bc2 26.Rd2 Bb3 27.Rc1 Rc1 28.Bc1 Qc8 29.Bb2 Qa6 30.Ba6 Nf5 31.Kf2 d4 32.e4 Ne3 33.Bd3 Rc8 34.a4? Ba4-+ 35.g3 Bh6 36.f4 Ng4 37.Kf3 Nf6 38.Re2 Nd7 39.h4? Bd1 40.Bb5 Be2 41.Ke2 Nb6 42.fe5 Rc2 43.Kf3 Rb2 44.e6 Bf8 45.Bc4 Nc4 (45...Nc4 46.g4 d3-+) 0–1. orangutanb4 (1990) – amirbg (1730), kurnik, 2011.

4.b5 Na5 5.e3 b6 6.Be2 a6 7.c4 Bb7 8.0-0 ab5 9.cb5 c6 10.Nc3 c5 11.d4 c4 12.e4 Nf6 13.d5 e5 14.Nd2 h5 15.Bc4 g6 16.f4 Ng4 17.Qf3+- f5 18.h3 Qh4 19.ef5 gf5 20.Qd3 Bc8 21.Nf3 Qf6 22.Ng5?? Nc4? 23.Qc4+- Ne3 24.Qc6 Bd7 25.Qa8 Ke7 26.Ne6! Be6 27.de6 Nf1 28.Nd5 Ke6 29.Nf6 Kf6 30.fe5 Kg6 31.Qe8 Kg5 32.Rf1 Bg7 (32...Bg7 33.Bc1 f4 34.Bf4 Kf5 35.Bh6 Ke4 36.Qc6 Ke5 37.Bg7 Ke6 38.Qe4 Kd7 39.Rf7 Kd8 40.Qa8; 32...f4 33.Qd8 Kg6 34.Qb6 Be7 35.ed6 Bd8 36.Qd4 Rg8 37.Qe4 Kh6 38.Qf4 Bg5 39.Qe5 h4 40.a4 Ra8 41.Qg7 Kh5 42.Qh7 Bh6 43.Rf5) 0–1. ncc_1701 – Garyman, ChessWorld.net, 2005.

4.b5 Nb4? 5.c4+- d5 6.a3 dc4 7.ab4 Bb4?? (7...Nf6+-) 8.Bg7 (8...Bd7 9.Qa4+-) 1–0. Wall,Bill – Debonaire, internet, 2002.

4.b5 Ne5 5.Ne5+/– de5 6.Be5 Qd5 7.Bc7+/– Qb5 8.Nc3 Qc6 9.Be5 f6 10.e4 Bb4?? 11.Bb5+- (11.Bb5 fe5 12.Bc6 bc6 13.Qh5 Kf8 14.Qe5+-) 1–0. pierre – miketysonofchess, internet, 2011.

4.b5 Nce7 5.e4 Nf6 6.Nc3 g6 7.Be2 Bg7 8.Nb1 (8.d4!?+=) 8...0-0= 9.d3 c6 10.a4 b6 (10...a6 11.Nc3=) 11.c4 Bb7 12.Nc3 d5 13.cd5 ed5 (13...cd5 14.e5 Nd7 15.d4=) 14.bc6 (14.e5 Ng4 15.d4 f6+=) 14...Bc6 (14...Nc6 15.e5 Nh5 16.Nb5=) 15.Nd5 (15.e5!? Nh5 16.Qd2+=) 15...Ned5=+ 16.ed5 Bd5 17.0-0 Qc7 (17...Rc8 18.Re1=+) 18.d4 (18.Be5 Qd7=) 18...Rad8 (18...Ng4 19.h3 Bf3 20.hg4=+) 19.Bb5 (19.Ne5 Qb7 20.Bf3 Nd7=+) 19...Ne4 (19...Ng4 20.g3 Qb7 21.Nh4=+) 20.Nd2 (20.Re1 Rc8=) 20...Nd6 (20...Nc3 21.Qg4 f5 22.Qh3 Nb5 23.ab5=+) 21.Ba3 (21.Rc1 Qb7 22.Qg4 Nb5 23.ab5 f5=+) 21...Bd4 (21...Qc3 22.Re1-/+) 22.Rc1 Qb7 23.Qg4 Bf6 (23...Be5 24.Rfe1 f5 25.Qh4=+) 24.Rfe1=+ a6 (24...Be7 25.Qf4 h6 26.Qe5+-) 25.Bd6 (better 25.Qf4 Nf5 26.Bf8 ab5 27.Bb4 Bg2 28.ab5+=) 25...Rd6-/+ 26.Qf4 Qb8 (26...Re6 27.Bc4-/+) 27.Bf1 (27.Ba6 Rc6 28.Qb8 Rb8=) 27...Kg7 (27...Rfd8 28.Ba6 Bc3 29.Bb5-/+ (29.Rc3? Re6 30.Qe3 Re3 31.Rce3 Bg2-+)) 28.Ne4 (28.Ba6 Re6 29.Qb8 Rb8 30.Re6 Be6=+) 28...Be4=+ 29.Qe4 Re6 30.Qc4 Rfe8 (30...Be5 31.Kh1-/+) 31.Re6=+ Re6 32.Qa6 b5 (better 32...Qf4!? 33.Rc2 Qd6=+) 33.Qb5+= Qb5 (33...Qf4 34.Rc2+=) 34.ab5+- Rb6 35.g3 Bd4 36.Rc6 Rc6 37.bc6 Be5 38.Bb5 (38.f4 Bc7+-) 38...Kf6 39.Kg2 Ke6 40.Kf3 Kd5 41.Ke3 f5 42.f3 (42.f4 Bd6+-) 42...g5 43.Kd3 (43.f4!? gf4 44.gf4+-) 43...Kc5 44.Ba4 Kb4 45.Bb3?? (45.Bc2 Kc5+=) 45...Bd6?? (45...Kb3 46.g4 fg4 47.fg4 Bh2-/+) 46.Bd5 (46.Be6 f4 47.g4 Kc5+=) 46...h6 (46...Kc5!? 47.Be6 f4=) 47.Bf7 (47.Kd4 Kb5+-) 47...Kc5+= 48.Be8 Kb6 (48...f4 49.g4+-) 49.Bd7 (49.Kd4 Kc7+-) 49...Kc7 (49...Kc5 50.g4+-) 50.Kc4 f4 51.gf4 (51.g4 Kd8+-) 51...Bf4 52.Kd5 (52.Kd5 Bh2 53.Be8=; 52.h4!?+=) 1–0. aravind555 – tlochi, lichess.org, 2017.

4.e3 Bc6 5.b5 Bd7 6.Nc3 a6 7.a4 a5 8.Bc4 d5+/– 9.Bd3 Be7 10.0-0 Bf6 11.e4 de4 12.Be4 Bc6?? 13.bc6 bc6 14.Qe2 Ra7 15.Rab1 Rb7 16.d4! Rb4 17.h3 Rd4 18.Nd4 Bd4 19.Rfd1 c5 20.Nb5 c6 21.Nd4 cd4 22.Bd4 Nd7 23.Bg7 f5 24.Qh5 Ke7 25.Bh8 fe4 26.Qh7 Ke8 27.Qg8 Ke7 28.Qh7 Ke8 29.Bf6! Qf6 30.Qd7 Kf8 31.Rb8 Qd8 32.Rd8# 1–0. mtr – NN, internet, 2009.

4.e3 Be7?? 5.Bg7+- Bf6 6.Bh8 Ba1 7.Ba1 Nc6 8.b5 Ne5 9.Ne5 de5 10.Be5 f6 11.Bb2 b6 12.Qh5 Ke7 13.Ba3 c5 14.bc6 1–0. juanpacio – tche_elvio, internet, 2008.

4.g3 Be7 5.Bg2 Nf6 6.0-0 0-0 7.c3 (7.c4 c6=) 7...Nc6 (7...a5 8.ba5 Ra5 9.c4=+) 8.a3= d5 9.d3 Bd6 10.c4 dc4 (10...a6 11.Nbd2+=) 11.dc4+= Ne7?? (better 11...a6+=) 12.c5+- Bc5 13.bc5 Ned5 14.Ne5 Nb6 (14...Bb5 15.Re1+-) 15.Nd7 (better 15.cb6 ab6 16.Bb7+-) 15...Nh5 (15...Nbd7 16.c6 bc6+-) 16.Nf8 (better 16.cb6 ab6 17.Nf8 Qf8+-) 16...Kh8 (16...Qd1 17.Rd1 Na4+-) 17.Bg7! Kg8 (17...Ng7 18.cb6 Zwischenzug; 17...Kg7 18.cb6 Zwischenzug) 1-0. unjournakamura (2425) - King_Julien1 (1725), Hourly Crazyhouse Arena, lichess.org, 2021.

4.c4 Ngf6 5.b5 c6 (5...Be7 6.e3=+) 6.a4 Be7 7.e3 0-0 8.Be2 e5 9.0-0 Nc5 (9...c5 10.Nc3=) 10.d4+= ed4 11.ed4 (worse 11.Qd4 Nb3 12.Qd3 Na1 13.Ba1 Nd7-/+) 11...Nce4 12.Qc2 Bg4 13.Nbd2 Nd2 14.Qd2 Qd7 15.Qf4 Nh5 16.Qe4 Rae8 (16...Nf6 17.Qe3 a6=) 17.Bd3 (17.Ne5 de5 18.Qg4 Qg4 19.Bg4 Nf6+=) 17...g6 (better 17...f5 18.Qe2 Nf4=+) 18.c5?? (better 18.h3 Bf5 19.Qe3=) 18...Bf6-+ (18...dc5? 19.Ne5 Nf6 20.Nd7 Ne4 21.Nf8+-) 19.bc6 (19.Ne5 de5 20.de5 Bf5 21.bc6 bc6-+ (21...Be4 22.cd7 Re5 23.Be5 Bd3 24.Rad1 Be5 25.Rd3+-; 21...Qd3?! 22.Qd3 Bd3 23.Rfe1-+)) 19...bc6 20.Ne5 de5 21.d5 (21.de5 Bf5 22.Qb4 Bd3 (22...Qd3?! 23.ef6 Re4 24.Qb7-+) 23.ef6 Bf1 24.Rf1 Rb8-+) 21...cd5 (21...Nf4 22.Qe3 Rb8 23.Bc3-+) 22.Qe3 d4 23.Qd2 Qd5 24.Rfc1 (24.f3 Be6-+) 24...Nf4 25.f3 Bf3 26.gf3 Qf3 27.Bf1 Qg4 (better 27...Bg5!? 28.Ra3 d3 29.Rd3 Nd3 30.Qg5 Qf2 31.Kh1 Nb2 32.Qg2 Qg2 33.Kg2-+) 28.Bg2 (28.Kh1 e4 29.Qd1 Qd1 30.Rd1 Ne6-+) 28...Ne2 (28...e4 29.h3 Nh3 30.Kh1-+) 29.Kh1 Nc1 30.Rc1 Bg5 31.Qd1 Qh4 (31...Qd1!? 32.Rd1 Rb8 33.Ba3-+) 32.Rc2 Bf4 33.Bf3 (33.Bb7 Rd8-+) 33...Be3 (33...e4 34.Bg4 Rd8 35.Rg2-+) 34.c6 (34.Bb7 Rd8 35.Re2 Qg4-+) 34...Rc8 (better 34...e4 35.Bg2-+) 35.Rg2 (35.Bg2 Rfd8-+) 35...Rc7 (better 35...e4 36.Be2 d3 37.Rg4-+) 36.Rg4 (36.Ba3 Re8 37.Bd6-+) 36...Qf2 (better 36...Qe7-+) 37.Rg2-/+ Qh4 (better 37...Qg2 38.Kg2 Re8-/+) 38.Rg4-+ Qf6 39.Re4 (39.a5 Qe6 40.Ba3 f5-+) 39...Rc6 (better 39...Rb8 40.Re3 de3 41.Bc3-+) 40.Qf1 (40.Re5 Rb8 41.Re3 Rb2 42.Rb3 Rb3 43.Qb3-+) 40...Rc2 41.Rh4 (41.Bg2 Qf1 42.Bf1 Rb2 43.Re5-+) 41...Qh4 42.Bg2 (42.Be2 Re2! 43.Qe2 Qe4 44.Qg2 Qb1 45.Bc1 Qc1 46.Qf1 Qf1) 42...Rb2 (42...Rg2 43.Kg2 Qg4 44.Kh1 Qe4 45.Qg2 Qb1 46.Bc1 Qc1 47.Qf1 Qf1) 43.Bf3 (43.h3 Rc8 44.Qa1 Rg2 45.Kg2 Rc2 46.Kh1 Qh3) 43…Qh2 (43...Rh2?!=) 0–1. aravind555 – scaccomatto2017 (1615), lichess.org, 2018.

4.e3 c5 5.bc5 Nc5 6.Bb5 Bd7 7.Bd7 Qd7 8.Nc3 Na6 9.0-0 Nf6 10.e4 d5 11.ed5 ed5 12.Re1 Be7 13.Ba3 0-0?? 14.Re7 Qg4 15.Rb7 Nh5 16.Bf8 Rf8 17.Nd5 Nc5 18.Rc7 Ne4 19.Ne5 Qg5 20.Ne7 Kh8 21.Nf7! Rf7 22.Rc8 Rf8 23.Rf8 1–0. Fournier,Frederic (2080) – Laccompagnatrice, Active, 2004.

4.e3 Ngf6 5.Nc3 d5 6.Be2 (6.a3 a5=) 6...g6 (6...Bb4 7.0-0+=) 7.0-0 (7.a3 Be7=) 7...Bg7 (7...Bb4!? 8.a3 Be7+=) 8.h3 0-0 9.d3 a6 10.Qd2 b5 (10...Qe7!? 11.a4 b6=) 11.a4+/– c6 (better is 11...ba4 12.Na4 Rb8+/–) 12.e4?? (better is 12.ab5 cb5 13.Nb5+-) 12...de4+= 13.Ne4?? (better is 13.de4 Ne4 14.Ne4 Bb2 15.Ra2=) 13...Ne4-+ 14.de4 Bb2 15.Ra2 Bg7 16.Rd1 Bf6 (16...Qb6!? 17.Qf4-+) 17.ab5 Nb6?? (17...cb5 18.e5 Be7 19.Bb5 Qc7 (19...ab5?! 20.Ra8 Nb6 21.Qd8 Bd8 22.Ra5+=) 20.Bd7 Rd8-+) 18.Qd8 Rd8 19.Rd8 Bd8 20.ba6 Bc7 21.Nd4 Bd7 22.Nb3 f5 23.c4 fe4 24.Nc5 Bc8 25.b5 cb5 26.cb5 e5 27.Ne4= Be6 28.Rc2 Rc8 29.Ng5 Bf5= 30.Rc6 Bd8 31.g4 Rc6 32.bc6 Bc8 33.Ne4 Be7 34.a7 Kf8 35.Nc3 Be6?? 36.Ba6 Bb4+= 37.Nb5 Bd5 38.c7 Be6?? 39.Bb7 Bc5 40.a8Q Na8+/– 41.Ba8 Bc8 42.Kg2 Ke7 43.Kf3 Kd7= 44.Ke4 Bf2 45.Ke5 Bb6 46.Kf6 Bc7 47.Kg7 h5 48.Kg6 hg4= 49.hg4 Bf4 50.Kh5 Ke7 51.g5 Bd7 52.Nd4 Be8 53.Kh6 Bd7 54.Nf5 Bf5 0–1. soltpl (1705) – mauro1236, gameknot.com, 2013.

4.e3 Ngf6 5.d4 Be7 (5...e5 6.c4=) 6.Bd3 c6 (6...0-0 7.0-0=) 7.0-0 (7.c4 a5 8.b5 cb5 9.cb5 0-0+=) 7...Qb6 (7...d5 8.a3=) 8.a3+= e5 (8...d5!?+=) 9.de5+/– Nd5? (better is 9...de5 10.Ne5 Ne5 11.Be5 Bg4+/–) 10.ed6 (10.c4 Ne3 11.fe3 Ne5+-) 10...Bd6 (10...Bf6 11.Bf6 N5f6 12.e4+-) 11.Bg7 Rg8 12.Bd4 Qd8 (12...c5 13.Bh7 cd4 14.Bg8+-) 13.Bh7 Rf8 (13...Rg4 14.h3 Rh4 15.Nh4 Qh4 16.Bf5+-) 14.Bg7 1–0. Wall,Bill – Akibar, internet, 2005.

4.e3 Ngf6 5.Be2 d5=.

4.e3 h6 5.Be2 a6 6.0-0+= b6 7.a3 Bb7 8.c4 Ne7 (8...Ngf6 9.d4+=) 9.Nc3 e5 10.Qc2 g5 11.d4 Bg7 12.Rad1 White prepares d5 12...Ng6 13.d5 0-0 14.h3 (14.Bd3 Qe8+/-) 14...f5+= 15.e4 f4 (15...g4 16.hg4 fg4 17.Nh2+=) 16.Na4 Qe7 17.c5 dc5 18.bc5 bc5? (18...Nc5 19.Nc5 Qc5 20.Qc5 bc5 21.Rd2+=) 19.Rc1?? (19.d6 cd6 20.Qb3 d5 21.Qb7 d4+-) 19...Rac8? (19...Rab8!?+=) 20.Nc5 (better 20.d6!? cd6 21.Qb3 Kh7 22.Qb7+-) 20...Nc5+/- 21.Qc5 Qd6 22.a4 Bf6 23.Ba3 Qc5 24.Bc5 Rfe8 (better 24...Rf7+-) 25.Rb1 Ba8 26.Ba6 Rcd8 (26...Rb8+-) 27.Bb5 c6 28.dc6 Rd2 (28...Rc8 29.c7! Be4 30.Be8 Bb1 31.Rb1 Rc7+-) 29.Nd2 Rc8 30.f3 (better 30.Rfc1 Kf7+-) 30...Bc6 31.Bc6 (31.Rfc1 Bb5 32.ab5 Nf8 33.Bf8 Rf8+-) 31...Rc6 32.Rfc1 h5 (32...Ra6 33.a5! Ra8 34.Rb7+-) 33.Bb6 Rd6 34.Nf1 g4 (34...Nf8 35.Rc8 Kf7 36.Bc5+-) 35.hg4 hg4 36.fg4 Bg5 (36...Nf8 37.a5 Nd7 38.g3+-) 37.a5 f3 (37...Ne7 38.a6 Nc6 39.Bf2+-) 38.Be3 (38.Rc8 Kf7 39.gf3 Ne7+-) 38...Nf4 (38...fg2 39.Bg5 gf1Q 40.Rf1+-) 39.gf3 (better 39.Bf4!? f2 40.Kf2 Bf4 41.Rc8 Kf7+-) 39...Ne2 40.Kf2 Nc1 41.Rc1 Be3 (41...Bh4 42.Ke2+-) 42.Ke3 Rb6 (42...Rd4 43.Rc5+-) 43.Ra1 (43.ab6 Kg7 44.b7 Kh7 45.b8Q Kg7 46.Qb7 Kg6 47.Rc6 Kg5 48.Qe7) 43...Ra6 44.Nd2 Kf7 45.Nc4 Ke6 46.f4 (better 46.Rh1 Kf7+-) 46...ef4 47.Kf4 Rc6 48.Ne3 Ra6 49.Nd5 Kd6 50.g5 Kc5 (50...Ra8 51.g6 Ra7 52.Kf5+-) 51.Nf6 (better 51.Nc7 Rg6 52.a6 Rg8+-) 51...Kd6 52.Kf5 Ke7 (52...Kc6+-) 53.e5 (53.Rd1 Rd6 54.Rd6 Kd6 55.e5 Kc5 56.g6 Kd4 57.a6 Ke3 58.a7 Kd4 59.g7 Kd3 60.a8Q Kc3 61.g8Q Kb4 62.Qgd5 Kc3 63.Qa3 Kc2 64.Qdd3) 53...Kf7 54.g6 (54.Rd1 Ra7 55.Rd8 Re7 56.g6 Kg7 57.Nh5 Kh6 58.Rh8 Rh7 59.Rh7) 54...Kg7 55.e6 (55.Rh1 Ra8 56.Rh7 Kf8 57.Rf7) 55...Kf8+- 56.Nd5 Ra7 (56...Rd6 57.Rh1 Rd5 58.Kf6 Rf5 59.Kf5 Ke7 60.Rd1 Kf8 61.Kf6 Ke8 62.a6 Kf8 63.Rd8) 57.Kf6 White plans e7 (57.a6 Ke8 58.Rb1 Kf8 59.Rb8 Kg7 60.Nf6 Kh6 61.g7 Ra6 62.g8N Kg7 63.Rb7 Kf8 64.Rf7) 57...Kg8 58.e7 (58.Rb1 Ra8 59.Ne7 Kf8 60.g7 Ke8 61.g8Q) 58...Ra8 (58...Re7 59.Ne7 Kf8 60.Rd1 Ke8 61.a6 Kf8 62.Rd8) 59.a6 (59.Nc7 Re8 60.Re1 Kh8 61.g7 Kg8 62.Rh1 Re7 63.Rh8) 59...Kh8 (59...Rf8 60.ef8R Kf8 61.g7 Ke8 62.Ke6 Kd8 63.g8Q) 60.a7 (60.Kf7 Ra6 61.e8Q) 60...Kg8 61.Nc7 Rc8 (61...Kh8 62.Na8 Kg8 63.e8Q) 62.a8Q Ra8 63.Ra8 1-0. dannysmet (2045) - ParvizJP (2080), Rated Blitz game, lichess.org, 2021.

4.e4 Ngf6 5.Bd3 d5=.

4.e4 h6 5.Bd3 e5 6.0-0 g5 7.Nc3 c6 8.Be2 g4 9.Ne1 h5 10.d4 Bg7 11.d5 a6 12.dc6+/– bc6 13.Qd6 Bb7 14.a3 Bf8 15.Qd1+- Qg5 16.Bc4 0-0-0? 17.Qe2 Nb8 18.Bf7 Rd2 19.Bc1 Bh6 20.Qc4 g3 21.Bd2 gh2 22.Kh1 Qd2 23.Rd1 Qg5 24.Nf3 Qg7 25.Qe6 Kc7 26.Qd6 Kb6 27.Qc5 Kc7 28.Qa5 (28.Qa5 Kc8 29.Rd8#) 1–0. wesolyPolak (1700) – madlob (1605), GameColony.com, 2002.

4.e4 Qf6 (4...Nf6 5.Nc3=) 5.d4 Nc6 6.Bb5 Bd7 7.0-0 0-0-0 8.a3 a6 9.Bc6 Bc6 10.Re1 Ba4 (better 10...Qg6!?+=) 11.Nc3+- Bc6 12.Nd5 Bd5 13.de5 de5 14.ed5 Bd6 15.c4 Qf4 (15...Qf5 16.Be5 Be5 17.Re5+-) 16.c5 Be7 17.Be5 (17.Re5?! Bf6 18.Re2 Ne7+-) 17...f6?? (17...Qg4+-) 18.Bf4 1–0. Janek – Ccvmep, internet, 2019.

4.g3 Bg4 5.Bg2 Qc8 (5...Nc6 6.b5 Na5 7.d3+=) 6.d4+- Bh3 7.Bh3 Qh3 8.de5 de5 9.Qd5 (worse 9.Ne5 Bb4 10.Nc3 Ne7=) 9...Nc6 10.Ne5 (10.Be5?! Qf5 11.Nbd2 Bb4=) 10...Nge7?? (better 10...Qe6 11.Qe6 fe6 12.Nc6 bc6+-) 11.Qf7+- (11.Qf7 Kd8 12.Na3+-) 1–0. Pierre – Mascarone, internet, 2020.

4.c4 f6 5.d4 Nec6 (5...e5 6.e4=) 6.a3 Bd7 (6...e5 7.d5 Ne7 8.e4+=) 7.e3 a6 8.Nc3 Ne7 9.Qc2 b5 (better is 9...c5!?+/–) 10.cb5+- ab5 11.Nb5 Bb5 (11...Bc6 12.Be2+-) 12.Bb5 c6 13.Bc4 d5 14.Bd3 g6 15.0-0 Nc8 16.Rfe1 Nb6 17.e4 Bd6 (17...Kf7 18.Nd2+-) 18.e5 (18.ed5 Nd5 19.Re6 Kf7+-) 18...fe5 19.de5 Be7 20.Nd4 Qc8 (20...Kf7 21.Nc6 Nc6 22.Qc6+-) 21.Re3 (better is 21.Be2+-) 21...N8d7?? (21...Na4 22.Rh3 Kd7+-) 22.Bg6! hg6 (22...Kf8 23.Ne6 Kg8 24.Rg3 Bg5 25.Rg5 Qd8 26.Bh7 Kf7 27.Rg7 Ke6 28.Qc6) 23.Qg6 Kd8 24.Ne6 1–0. pierre (1985) – chsen, chesshere.com, 2006.

4.c4 Ng6 5.e3 Nd7 6.Be2 Nde5 (6...e5 7.Nc3=) 7.0-0+= Be7 8.Nc3 0-0 9.d4 Nf3 10.Bf3 c6 11.g3 (11.b5 d5=) 11...e5 (11...d5 12.Qb3=) 12.h4 Bh4 (12...Re8!?=) 13.gh4+= Nh4 14.Ne4 Bh3 15.Re1 d5 (15...f5 16.Ng3+=) 16.cd5+- cd5 17.Ng3 e4 18.Bh1 Qf6 (18...Rc8 19.Qe2+=) 19.Qh5+- Be6 (19...Qd8 20.Re2 g6 21.Qh6+-) 20.Rac1 (20.Rec1 Rfc8+-) 20...Nf3 (20...Rfc8!?+-) 21.Bf3+- ef3 (21...g6 22.Qh1 ef3 23.Rc7+-) 22.Rc7 (22.e4 g6 23.Qh6 a5 24.ed5 Bd5+-) 22...Rab8 (22...Rfc8!? 23.Rb7 Rc2 24.Rb1+-) 23.Rec1 g6 (23...Rfe8 24.Nf1+-) 24.Qh6 Rbc8? (24...Bg4+-) 25.Nh5! (25.Rb7?! Rc1 26.Bc1 Rc8+-) 25...Qh8 (25...gh5 26.Qf6 Pinning (26.Qf6 Deflection)) 26.Rc8 Rc8 27.Rc8 Bc8 28.Qg5 h6 29.Qd8 Kh7 30.Nf6 Kg7 31.Ne8 Kh7 32.Qc8 g5 (32...Qf8 33.Qd7 Kh8+-) 33.Qf5 Kg8 34.Nf6 Kf8 35.Qc8 Kg7 36.Nh5 Kh7 37.Qf5 Kg8 38.Qd5 (38.Qd5 a6 39.Qd7 Qf6 40.Qc8 Kh7 41.Nf6 Kg6 42.d5 h5 43.Qg8 Kf5 44.Qh7) 1–0. Pierre – Playmaster, internet, 2020.

4.e3 c6 5.Be2 Ng6 6.c3 (6.0-0 e5+=) 6...Be7 7.d4 d5 8.a4 a6 9.Nbd2 b5 (better 9...a5!? 10.Ba3 0-0=) 10.ab5+/- cb5 11.Bb5! Bd7 (11...ab5 12.Ra8 Pinning (12.Ra8 Deflection)) 12.Bd3 f5 (12...Qb6 13.0-0+/-) 13.h4! 0-0 (13...Bh4 14.Nh4 Decoy; 13...Nh4 14.Nh4 Combination) 14.h5 Nh8 15.Nb3 Nf7 16.Nc5 Bc5 17.dc5 Nc6 (17...Bc6 18.c4+-) 18.Ba6 Nce5 (18...Qc7 19.b5 Na5 20.Ba3+-) 19.c4 Nf3 20.gf3 f4 (20...dc4 21.Rg1 c3 22.Bc3+-) 21.ef4 Nh6 22.cd5 Qe7 (22...ed5 23.Qd5 Kh8 24.Rg1+-) 23.d6 Qf7 (23...Qe8 24.Rg1 Rf7 25.b5+-) 24.Rg1 Nf5 25.Bd3 g6 26.hg6 hg6 27.Ra8 Ra8 28.Bf5 ef5 29.Qd4 Re8 30.Kd2 Qh7 31.Rh1! (31.Rh1 Rd8 32.Rh7 Kh7 33.Qg7) 1-0. PEREIRA – Ciufe, internet, 2021.

4.e3 Ng6 5.Be2 e5 6.0-0 Be7 7.c4 0-0 8.d4 e4 9.Nfd2 f5 10.Nc3 c6 11.a4 d5 (11...Nd7!?+=) 12.cd5+/- cd5 13.Nd5! Be6 (13...Qd5 14.Bc4 Decoy) 14.Ne7 Qe7 15.b5 Nd7? (better 15...Qg5+/-) 16.Ba3+- Qf7 (16...Qg5 17.Bf8 Rf8 18.Qc2+-) 17.Bf8 Rf8 18.Qc2 Ne7 19.Qc7 Nd5 (19...Rb8 20.Bc4+-) 20.Qb7 Nc3 21.Bc4! Bc4 22.Nc4 Qe6 (22...Qc4 23.Qd7 f4 24.Rfe1 fe3 25.Re3 Ne2 26.Kh1+-) 23.Qa7 f4 24.ef4 Ne2 25.Kh1 Nf4 26.Ne3 Nf6 27.b6 Qc8 (27...Nd3 28.a5+-) 28.b7 Qb8 29.Qb8 Rb8 30.Rab1 N6d5 (30...Ne6 31.Rfc1 Kf7 32.a5+-) 31.Nd5 Nd5 32.Rfc1 Kf7 33.Rc8 1-0. PEREIRA – stouwa, internet, 2021.

4.e4 Ng6 5.Nc3 Be7 6.Be2 0-0 7.0-0 Nd7 8.d4 b6 9.Qd2 Bb7 10.Rfe1 Rb8 11.h3 c5 12.b5 cd4 13.Qd4 e5 14.Qd2 Nc5 15.Bc4+= Bf6 16.Rad1 d5 17.Nd5 Bd5 18.Qd5 Qd5 19.Bd5 Rbd8 20.g3 Ne7? 21.Ne5 Nd5 22.ed5 Be5 23.Re5 f6 24.Re3 Rf7 25.Ba3 Rfd7 26.Bc5 bc5 27.c4 g5 28.Kg2 Kg7 29.Re6 Kg6 30.Rde1 h5 31.Rc6 h4 32.Rc5 f5 33.Rc6 Kh5 34.Re5 Rf7 35.Rf5! Rf5 36.g4# 1–0. pierre – kajurore, internet, 2008.

4.Nc3 e5 5.e4+= Ne7 6.Bc4 a6 7.0-0 b5 8.Bb3 c6 9.a4 g6 10.d4 ed4? 11.Qd4+- Qc7?? 12.Qf6 Rg8 13.Bf7 Kd7 14.Ne5! de5 15.Rad1 Nd5 16.Qe6 Kd8 17.Qe8# (17.ed5?! Be6 18.de6 Kc8 19.Bg8 ba4+=) 1–0. pierre – darkheroe, internet, 2008.

4.d4 d5!?+=.

4.d4 g6 5.Nbd2 Nh6 6.c4 Nf7 (6...Bg7 7.e4+/-) 7.e3 Bg7 8.Be2 0-0 9.0-0 Re8 10.Re1 Nd7 11.c5 Nf8 (11...f5 12.Qb3+=) 12.Qb3 d5 13.Rad1 c6 14.a4 (14.h3 Nd7+/-) 14...a6 (14...a5 15.b5+/-) 15.e4 b5 16.h3 Kh8 (16...Bb7 17.Bd3+/-) 17.Bd3+- Kg8 18.Qa2 Bb7 19.Nb3 Kh8 (19...f5!? 20.e5 Ng5 21.Ng5 Qg5+-) 20.Na5+- Qc7 21.g3 (21.Re2 Kg8+-) 21...Kg8 22.Ra1 (better 22.Re2+-) 22...Bc8? (better 22...Nd7+-) 23.ed5 cd5 24.ab5 ab5 25.Bb5 Re7 (25...Bd7 26.Bd3 Reb8 27.Bc3+-) 26.Qb3 e5 (26...Bd7 27.Be2 f5+-) 27.Nc6 Ra1 28.Ne7 (28.Ra1 Rd7 29.Ra7 Bb7 30.de5 fe5 31.Nce5 Be5 32.Ne5 Ne5 33.Be5 Qe5 34.Bd7 Qb8 35.Rb7 Qb7+-; 28.Ba1?! Re6 29.Qd5 Bd7+-) 28...Qe7 29.Ra1 (worse 29.Ba1 Qe6 30.de5 fe5+-) 29...e4 30.Nh4 g5 (30...Qe6 31.Ng2 Bh6 32.h4+-) 31.Ng2 Bh3 32.Bc6 Bg2 (32...Be6 33.Ne3 Nd8 34.Bd5+-) 33.Kg2 e3 (33...h5 34.b5 e3 35.Qe3+-) 34.Qe3 Qe3 (34...Ng6 35.Bd5 f5 36.b5+-) 35.fe3 Nh6 36.Bd5 Kh8 37.c6 Nf5 38.c7 Ne3 39.Kg1 Nd5 40.c8Q (40.c8Q Ne7 41.Qc7+-) 1-0. Adlai – Kraentr, internet, 2021.

4.e4 Nc6 5.b5 Nce7 6.d4 Nh6 7.Bd3 Nf7 8.0-0 g6 9.Nbd2 Bg7 10.c4 0-0 11.Qb3 c6 12.a4 d5 13.ed5 cd5 14.Rfe1 f5 15.Ne5 Nd6 16.f3 dc4 17.Ndc4 Nc4 18.Bc4 Qb6 19.a5 Qd6 20.Rad1 Re8?? 21.Ba3 Qc7 22.Rc1 Kh8 23.Be6 Be6 24.Qe6 Nc6 25.Qb3 Nd4?? 26.Qd5 Qd8 27.Nf7 Kg8 28.Nd8 (28.Nd8 Ne6 29.Re6 Bd4 30.Re3 Re6 31.Qe6 Kg7 32.Qe7 Kh6 33.Qh4 Kg7 34.Rc7 Kg8 35.Qh7; 28.Nh6 Kh8 29.Qg8 Rg8 30.Nf7) 1–0. bratek55 (1605) – zakqpmk (1630), kurnik, 2011.

4.e4 Bd7 5.Bc4 Qe7 6.d4 d5= 7.Bd3 Kd8 8.c3 c6 9.0-0 Na6 10.Nbd2 Nc7 11.Re1 Qf7 12.ed5 ed5 13.a4 Ne7 14.Nb3 b6 15.h3 Nc8 16.Qc2 Nd6 17.Re2 Be7 18.Rae1 Re8 19.Bh7 Bf8 20.Bg6 Re2 21.Re2 Qg8 22.Bc1 Kc8 23.Bf4 Kb7 24.a5 Ne6 25.Bd6 Bd6 26.Qd3?? Nf4=+ 27.Qc2 Ne2 28.Qe2 Be8 29.Bd3 Bd7 30.Ba6 Kc7 31.Bd3 Re8 32.Qa2 b5 33.Nc5 Bc5 34.bc5 a6 35.Qc2 g5 36.Bf5 Bf5 37.Qf5 Qe6 38.Qh7 Re7 39.Qh8 Re8 40.Qh7 Qe7 41.Qf5 Rd8 42.Qg4 Rd7 43.h4 gh4 44.Qh4 Qh7 45.Qf4 Kb7 46.Qf6 Rf7 47.Qd6 Qb1 48.Kh2 Rh7 49.Kg3 Rg7 50.Kh3?? Qh7 51.Nh4-/+ Qd3 (51...Qd3 52.f3 A) < 52...Qc3 53.Qd8 Qd4 54.Qb6 Kc8 55.Qa6 (< 55.Qc6 Kb8=) 55...Kb8 56.Qc6+/–; B) 52...Qf1-/+) 0–1. bratek55 (1635) – maximus900, kurnik, 2011.

4.e4 g6 5.d4 Nh6 6.Bc4 Nf7 7.0-0+/– Bg7 8.Nbd2 0-0 9.Re1 c6 10.Bb3 d5 11.c4 f5 12.e5 g5 13.g3 h5 14.Rc1 h4 15.gh4 g4 16.Ng5 Ng5 17.hg5 Qg5 18.Kh1 Kf7 19.Rg1 Rh8 20.Rg2 Bh6 21.Nf1 Qh4 22.cd5 cd5 23.Rc7 Ke8?? 24.Rc8+- Ke7 25.Rh8 a5 26.Bc1 (26.Bc1 Kd7 27.Bh6+-) 1–0. bratek55 (1640) – zakqpmk, kurnik, 2011.

4.g3 Be7 5.Bg2 Bd7 6.c4 c6 7.Nc3 Na6 8.b5 Nc7 9.0-0 b6? (better is 9...cb5 10.cb5 d5=) 10.Nd4+- d5 11.bc6 Bc8 12.cd5 Nd5 (12...ed5 13.Qb3+-) 13.Nd5 ed5 14.Qb3 Bc5 15.c7 (15.Bd5?! Ne7 16.Bf7 Kf8+-; 15.Qd5?! Qd5 16.Bd5 Ne7+-) 15...Qc7 16.Bd5 (16.Qd5?! Rb8+-) 16...Rb8 17.Bg8 Bd4 18.Bd4 Bb7 19.Rac1 Qd6 (19...Qd7+-) 20.Qf7 Kd8 21.Qg7 Rg8 22.Bf6 Ke8 23.Qg8 Kd7 (23...Qf8 24.Qe6 Qe7 25.Qe7) 24.Qf7 Qe7 25.Qe7 1–0. b4_player – valentino, internet, 2013.

4.a3 a6 5.e3 Nc6 6.c4 d5 (6...e5 7.d4 e4 8.d5+=) 7.c5+= Qe7 8.Qc2 (8.d4!?+=) 8...e5= 9.b5 ab5 10.Bb5 e4 (worse 10...Qc5 11.Qc5 Bc5 12.Ne5+=) 11.Ne5 Bh3?? (better 11...Bd7 12.Bc6 Bc6 13.Nc6 bc6=) 12.0-0. unjournakamura (2415) - olegkoshel (2265), Rated Crazyhouse game, lichess.org, 2021.

4.c4 Be7 5.e3 0-0 6.Nc3 Nbd7 7.Qc2 e5 8.Be2 c6 9.d3 b5 (9...d5 10.a3=) 10.cb5+= cb5 11.Nb5 a6 (11...Qb6 12.d4=) 12.Nc7 Bb7? (12...Rb8 13.a3 Bb7-/+) 13.e4?? (better 13.Na8 Qa8 14.0-0+-) 13...Be4?? (better 13...Rc8-+) 14.Nh4 (14.Nh4 Bg2! 15.Rg1-/+). opperwezen (2650) - hansrx7 (1870), Hourly Crazyhouse Arena, lichess.org, 2017.

4.c4 g6 5.e3 a6 (5...Bg7 6.Nc3=) 6.Be2 b6 (6...Bg7 7.Nc3=) 7.Nc3 Bb7 8.a4 (8.Qa4 Qd7=) 8...a5= 9.ba5 (9.b5 Bg7=) 9...Ra5 10.Nb5 Bg7 11.Bc3 Ra8 12.a5 c6 13.Nbd4 e5 14.Nb3 0-0 (14...Ne4 15.Bb2=) 15.ab6+= Qb6? (better 15...Ra1!? 16.Qa1 Qb6+=) 16.Ba5+- Qa7 (16...Ra5 17.Na5 (17.Ra5?! c5+=) 17...Ba6 18.Qb3+-) 17.Bc7+- Ba6 18.Bd6 Rd8 (18...Re8 19.Be5 c5 20.Bc3+-) 19.Be5 Qd7 (19...c5 20.0-0+-) 20.0-0 Qe6 (20...Qe7 21.Na5 Rc8 22.Qc2+-) 21.Nc5 Qc8 (21...Qe7 22.Ra5 Bb7+-) 22.Bb8 Rb8 (22...Nd7 23.Ra6 Rb8 24.Nd7 Qa6 25.Nb8 Rb8 26.Qc2+-) 23.Na6 Rb2 (23...Rb6 24.Qa4+-) 24.d4 Ne4 (24...Nd7 25.c5 Nf6 26.Bd3+-) 25.Bd3 White prepares the advance c5 25...Nd6 (25...Re8 26.Be4 Re4 27.Qa4+-) 26.Qa4 Nb7 (26...Nf5+-) 27.Qa3 White intends c5 27...Rb6 28.c5 Nc5 29.Nc5 Qc7 30.Bc4 Rdb8 31.Ng5 Rf8 32.Nf7 Rf7 33.Qa7 Kh8 34.Qc7 Rc7 35.Ra8 Bf8 (35...Rb8 36.Rb8 Bf8 37.Rf8 Kg7 38.Ne6 Kh6 39.Nc7 c5 40.Rf4 cd4 41.Be2 g5 42.Rf6 Kg7 43.Ne8 Kg8 44.Bc4 Kh8 45.Rf8) 36.Rf8 Kg7 37.Ne6 Kh6 38.Rf4 g5 (38...Rb5 39.Bb5 g5 40.Rf6 Kh5 41.g4 Kh4 42.Rh6 Kg4 43.f3 Kf5 44.Bd3) 39.Rf6 Kh5 40.g4! Kg4 (40...Kg4 41.Be2 Mate attack) 41.Be2 Kh4 42.Rh6 1–0. Pierre – GuestOtmau, internet, 2020.

4.e3 a6 5.Be2 Be7 6.0-0 0-0 7.d3 h6 8.Nbd2 Bd7 9.c4 b6 10.a4 a5 11.b5 d5 12.Ne5 c6 13.Bf3 Bd6 14.Ng4 (better is 14.Nd7!? Nfd7 15.bc6+/–) 14...Ng4= 15.Bg4 f5 16.Bf3 Be8 17.e4 Be7 (better is 17...fe4!? 18.de4 d4=) 18.cd5 fe4 19.de4 cd5 20.ed5 ed5 21.Nc4! dc4 22.Ba8 Qc7? (22...Bf7 23.Qg4 Bf6 24.Rad1+-) 23.Bc3 (23.Rc1 Bd6 24.Rc4 Bc5+-) 23...Bf7? (23...Bd6 24.h3+-) 24.Bf3 (better is 24.Qg4 Bg5 25.f4+-) 24...Bb4 25.Qc2 Bc3 26.Qc3 Nd7 27.Rad1 Nf6 28.Bc6 Rd8 29.Rd8 Qd8 30.Re1 Qd3 31.Rc1 Qd6 32.Bf3 Bd5? (32...Qf4+-) 33.Bd5 Qd5 34.Qc4 Qc4 35.Rc4 1–0. Kappel,Ray – Kohler, 2011 SB–1 Lechenicher SchachServer, 2011.

4.e3 c5 5.bc5 dc5 6.Bb5 Bd7 7.Bd7 Nbd7 8.0-0 Be7 9.c3 0-0 10.d4 b6 11.Nbd2 Qc7 12.h3 e5 13.Rc1 ed4 14.cd4 Qb7 15.dc5 bc5 16.Rb1 Qc6 17.Qc2 a5 18.Rfc1 Rfc8 19.Nd4 Qa6 20.N4f3 a4 21.a3 Nd5 22.Qc4 N5f6 23.Ne4 Qc4 24.Rc4 Nb6 25.Nf6 Bf6 26.Rcc1 Bb2 27.Rb2 Nd5? 28.Rbc2 Ra5+= 29.Ne5 f6 30.Nc4 Rb5?? 31.Nd6+- Rcb8 32.Nb5 Rb5 33.Rc5 Rc5 34.Rc5 Nb6 35.Rb5 Nc4 36.Rb4 Na3 37.Ra4 Nc2 38.Kf1 1–0. Fournier,Frederic (1635) – chicovi (1650), Active, 2006.

4.e3 Be7 5.Be2 0-0 6.0-0 b6 7.c4 Bb7 8.d4 Nbd7 9.Nc3 Rc8 10.a4 a6 11.a5 b5 (better 11...ba5 12.ba5 Rb8=) 12.cb5+- c5 13.ba6 (better 13.bc6 Rc6 14.d5 Rc3 15.Bc3 Nd5 16.Bb2+-) 13...Ba8?? (better 13...Bf3 14.Bf3 cb4+=) 14.b5 cd4 (14...Bf3 15.Bf3 d5 16.dc5 Nc5 17.Na4+-) 15.Nd4 Ne4 (15...Ne4 16.Ne4 Be4+-). wvmaniac – lefou, net–chess.com, 2020.

4.e3 Be7 5.Be2 0-0 6.0-0 b6 7.Nc3 Bb7 8.a4 a6 9.a5 b5 10.d3 h6 11.Na2 Nc6 12.e4 d5 13.e5 Nd7 14.Qd2 f6 15.ef6 Bf6 16.d4 Kh8 17.Rae1 e5 18.de5 Nde5 19.Ne5 Be5 20.Be5 Ne5 21.f4 Nc4 22.Qd4 Qf6 23.Qf6 Rf6 24.Bc4 dc4 25.Re7 Rc8 26.Nc3 Kg8 27.f5 Kf8 28.Re5 Re8 29.Re8 Ke8 30.g4 Kf7 31.Kf2 Rd6 32.Ke3 Rd7 33.Rf2 Re7 34.Kd4 Rd7 35.Kc5 Rd6 36.h3+= Kf6 37.Re2 Rd7 38.Re3 Kg5 39.Re5 Kh4 40.f6 gf6 41.Rh5 Kg3 42.Ne2 Kf3-+ 43.Nc3 Kg3 44.Ne2 Kf3 (better is 44...Kf2!? 45.Nc3 Rd6 46.Nb5 Rc6 (46...ab5 47.Kb5 Rd5 48.Kc4 Rh5 49.gh5-+) 47.Kd4 ab5 48.Rb5 Rd6 49.Kc3 Bd5-/+) ½–½. kamret (2270) – jonathan.Quebec, GameColony.com, 2003.

4.g3 Nc6 5.Bg2 a6 (5...Nb4!? 6.0-0 Be7-/+) 6.a3= h5 (6...e5 7.0-0=) 7.0-0+= Qe7 8.c4 e5 9.Nc3 e4 (9...Be6 10.Qa4+=) 10.Ng5+/- Ne5 11.Qb3 h4 12.Nge4 hg3 13.hg3 Ne4 14.Ne4 Nf3?? (better 14...Qe6 15.f4 Ng4+/-) 15.ef3 Qe4 (15...f5 16.Nc3 Qf7 17.Rfe1 Kd8 18.f4+-) 16.Bg7 (better 16.fe4 Be6 17.d4+-) 16...Bg7 (16...Qh7 17.Qe3 Be7 18.Bh8 Qh8+-) 17.b5 1-0. unjournakamura (2410) - olegkoshel (2270), Rated Crazyhouse game, lichess.org, 2021.

4.Nc3 a6 5.e4 e5 6.d4 f6? 7.Bc4 Qe7 8.0-0 g5 9.Nd5 Qg7 10.a4 c6 11.Nb6 Nd7 12.Na8 Kd8 13.b5 h5 14.bc6 bc6 15.Qd2 g4 16.Qa5 Ke8 17.Nc7 Ke7 18.Ne6 Qh7 19.Qd8 Kf7 20.Nc7 Kg6 21.Qe8 Kh6 22.Bc1 Kg7 23.Ne6# 1–0. pierre – nagimi, internet, 2009.

4.Nc3 b6 5.e4 Bb7 6.Bc4 a6 7.0-0 Nd7 8.d4 Ne7 9.d5+/– e5 10.a4 a5 11.ba5 Ra5 12.Nd2 Nc5 13.Nb3 Ra8 14.Nc5 bc5 15.f4 f6 16.fe5 fe5 17.Qh5 Kd7 18.Qg4 Ke8 19.Bb5 c6 20.dc6 Bc6 21.Qe6 Qd7 22.Bc6 Rd8 23.Qf7# 1–0. b4_player – opponent, gamecolony.com, 2008.

4.e3 a6 5.c4 Nc6 6.b5 ab5 7.cb5 Na7 8.a4 Bd7 9.Be2 Nf6 10.Nc3 e5 11.d3 g5 (11...c6 12.d4 e4 13.bc6 Nc6 14.d5 ef3 15.dc6 bc6 16.Bf3=) 12.0-0+= Bg7 13.Ne4 Ne4 14.de4 0-0 15.Bc4 Kh8 16.Qb3 (16.Bd5 c6 17.bc6 bc6+=) 16...Qe7 17.Qb4 (better 17.a5+=) 17...Rab8? (better 17...f5+=) 18.Ne5?? (better 18.Qa5 Ra8 19.Qc7+-) 18...c5 19.Nf7 (19.Qc5 dc5) 19...Rf7=+ 20.Bg7 Rg7 (20...Kg7 21.Qa5 Ra8 22.Bf7 Kf7 23.f4 Qe4 24.fg5 Ke7 25.b6+-) 21.Qc3 (21.Qa5!? Ra8 22.Bd5=) 21...Qe4-/+ 22.f3 Qf5 Black intends g4 (22...Qe5 23.Qe5 de5 24.Rad1-/+) 23.f4 (23.Qa5 Ra8 24.b6 g4-/+) 23...g4 (23...gf4 24.Rf4 Qg5 25.Qd2-+) 24.e4 (better 24.Rad1 Nc8 25.a5-/+) 24...Qh5?? (better 24...Qe4!? 25.Rae1 Qd4 26.Qd4 cd4-/+) 25.f5 (25.Rad1 Kh7 26.Rd6+=) 25...Re8 (better 25...Rf8!?=+) 26.f6+- Threatening mate... how? 26...Rf7 27.Bf7 Qf7 28.Rf4 (28.Qd2 Re4 29.Qd6 Nc8 30.Qc5 Rc4+-) 28...h5 (28...Nc8 29.Qg3=) 29.Raf1 Nc8 30.Qg3 (30.Rc1 b6+=) 30...Nb6= 31.h3 (31.a5 Nc4=) 31...Na4 (31...gh3 32.Rh4 Rg8 (32...Na4?? 33.Rh5 Qh5 34.Qg7) 33.Qd6 Rg2 (worse 33...hg2 34.Rff4+-) 34.Kh1 Na4 35.Rh5 Kg8 36.Qb8 Be8+-) 32.hg4= Rg8 33.g5 The passed pawn on g5 will quickly become a dangerous weapon 33...Bb5 34.g6 Rg6 35.Qh4? (better 35.Qg6! Qg6 36.f7 Qf7 37.Rf7 Bf1 38.Kf1=) 35...Rh6 (better 35...Kg8 36.R1f2 Kf8-/+) 36.Rg4?? (better 36.Qg5 Kh7 37.R1f3-/+) 36...Bf1-+ (36...hg4? 37.Qh6 Qh7 38.Qh7 Kh7 39.f7 Bf1 40.f8Q+-) 37.Rg7 (37.e5 Bb5 38.Rg7-+) 37...Qf6 38.Qf6 Rf6 39.Rb7 Nc3 (39...Nc3 40.Kh2 Ne4-+) 0–1. aravind555 – adrenalin1mg (1695), lichess.org, 2018.

5.b5 a6 6.e4 Ng6 7.a4 (7.Bc4 ab5 8.Nb5 Nc6 9.0-0) 7...Nd7 8.d4 Nf6 (8...ab5 9.ab5) 9.ba6 ba6.

5.b5 Nd5 6.e3 Nc3 7.Bc3 Nd7 8.Bd3 Nc5 9.0-0.

5.e3 Nbc6 6.b5 Ne5 7.Ne5 de5 8.Qf3 Nf5 9.Ne4 Bd6.

5.e4 Nd7 6.d4 a6 7.Be2 Ng6 8.0-0 Nh4 9.Nh4 Qh4 10.d5 e5 11.Qd3 Nf6 12.Qc4 c6 (better is 12...Kd8!?+=) 13.dc6+- b5 14.Qd3 Be6 15.a4 Bc4 16.Qf3 Be2 17.Qe2 (17.Ne2?! ba4 18.Ra4 Qe4 19.Qe4 Ne4+-) 17...Ng4? (17...ba4 18.Ra4 Be7+-) 18.h3 Nf6 19.ab5 Be7 20.b6 0-0 21.c7 Nh5 (21...Rac8 22.Qa6 Kh7 23.Qc8 Rc8 24.b7 Rc7 25.b8Q+-) 22.b7 Rae8 (22...Nf4 23.Qe3 Qg5+-) 23.Qa6 Nf4 24.c8Q Rc8 25.bc8Q Rc8 26.Qc8 Kh7 27.Qf5 Ng6 28.Nd5 Bg5 29.g3 Qh5 30.f4 ef4 31.Qf7 Qh3 32.Qg7 1–0. Fritz 11 – headchoper, internet, 2014.

5.e4+= Nd7 6.d4 c6 7.Bd3 (7.Be2 Ng6 8.0-0 Nf4 9.b5) 7...Qc7 (7...Ng6 8.0-0 Qc7 (8...Be7 9.Qd2) 9.h3+/– (9.Qd2 Be7)) 8.0-0 (8.Qd2 Ng6 9.h4) 8...e5 (8...Ng6 9.g3+/– (9.b5 Be7)) 9.Ne2 (9.Qd2 Ng6; 9.a3+-) 9...a6 (9...Ng6+/–) 10.h4 (10.c4 Ng6+=) 10...ed4= 11.Ned4 b6 12.Nf5 Ng6 (12...Rg8!?+=) 13.Ng7 Bg7 14.Bg7 Rh7 15.Bc3 c5? (better is 15...Nde5 16.Ne5 de5+/–) 16.e5!+- de5 (16...de5 17.h5 Combination; 16...Nde5 17.Ne5 Combination; 16...Nge5 17.Bh7 Pinning (17.Bh7 Deflection; 17.Bh7 Clearance)) 17.h5 cb4 (17...Ngf8 18.Ne5! cb4 19.Nd7 Bd7 20.Bb4 f5 21.Re1 Kf7 22.Bf5 Bf5 23.Qd5 Kf6 24.Qa8 Ne6+-) 18.hg6 Rg7 19.Be5! Ne5 20.Ne5 f6 (20...f5 21.Re1 Kf8 22.Qf3+-) 21.Nf7 Rf7 (21...Kf8 22.Qf3 Bb7 23.Qf6 Qf7 24.Qd6 Qe7 25.Qf4 Qf7 26.Qb4 Qe7 27.Qf4 Qf7 28.Qf7 Rf7 29.gf7 Rc8+-) 22.gf7 Qf7 23.Re1 Be6 24.Qg4 Kd7 25.Re6! Qe6 (25...Qe6 26.Qe4 Double attack (26.Qe4 Decoy)) 26.Bf5 Qf5 27.Qf5 (27.Qf5 Kc6 28.Rd1 b5 29.Qe6 Kc7 30.Rd7 Kb8 31.Qe8#) 1–0. b4_player – Zustertje, internet, 2011.

5.e4+= Nd7 6.d4 d5 7.Bd3 de4 8.Ne4 Nd5 9.a3 a5.

5.e4+= Nd7 6.Be2 Ne5 7.d4 Nf3 8.Bf3 Ng6 9.0-0 Be7.

5.e4+= Ng6 6.Be2 Nf4 (6...Nc6 7.b5 Nce5 8.g3 Nf3 9.Bf3) 7.0-0 Nc6 8.b5 (8.Bb5 Be7 9.g3) 8...Ne5 9.g3 Ne2.

4.Bg2 Be7 5.Nf3= Bf6 (5...Nf6 6.d3=) 6.d4 e4 7.Nfd2 d5 8.c4 c6 9.0-0 Nh6 10.Nc3 (10.e3 Nf5=) 10...Bf5 (10...Bd4!? 11.cd5 cd5=) 11.e3+= Bg4 12.Qb3 White intends b5 12...Be6 13.b5 0-0 (13...Qd7!?=) 14.bc6+/– bc6 15.Ba3 Re8 16.Rab1 (16.Qb7 Qd7 17.Qa8 Na6 18.Qe8 Qe8+=) 16...Na6 (16...Qa5 17.cd5 cd5 18.Qb5 Qb5 19.Rb5+/– (19.Nb5?! Na6+=)) 17.Qa4 Qc8 (better is 17...Nb8+=) 18.Rfc1+- Ng4 (18...Bd7 19.cd5 cd5 20.Qb3+-) 19.cd5 Bd5 (19...Bd7 20.Nce4 cd5+-) 20.Nd5 Qe6 (20...Qf5 21.Nf4 (21.Qa6?! Qf2 22.Kh1 cd5+/–) 21...g5 22.Nh3+-) 21.Nf4 Qd7 (21...Qc8 22.Ne4 Nb8 23.Nd6+-) 22.Qa6 g5 (22...Bd4 23.Rb7 Qd8 24.Qc4+-) 23.Rb7 Qf5 (23...Qd8 24.Nh5 Bd4 25.Qc4+-) 24.Rc5 Qe6 25.Ne6 Re6 26.Ne4 Be7 27.Re7! Re7 28.Rg5 Kf8 (28...Kh8 29.Be7 h6 30.Rg4 h5 31.Qc6 Kh7 32.Nf6 Kh6 33.Ng8 Kh7 34.Qh6) 29.Be7 (29.Qc6 Rd8 30.Nf6 Nf6 31.Qf6 Rd4 32.Qe7) 29...Ke7 30.Qb7 1–0. Janek – Igor, internet, 2016.

4.Bg2 Nf6 5.c4 Be7 6.a3 Nbd7 (6...0-0 7.Nh3=+) 7.d3 c5 (7...c6 8.Nf3=) 8.b5 a6 9.a4 (9.ba6 Qb6 10.Qd2 Qa6=) 9...ab5 10.cb5 (better 10.ab5 Ra1 11.Ba1=) 10...b6?? (better 10...0-0=+) 11.Ba8+- d5 12.Bc6 0-0 13.e3 Nb8 (13...Bd6 14.Nf3+-) 14.Be5 Nc6 15.bc6 Bd6 16.Bb2 (16.Nf3 Re8 17.d4 Bg4+-) 16...Qe7 (16...d4 17.Nd2+-) 17.Nd2 (17.Na3 Bg4 18.f3 Qe3 19.Qe2 Re8 20.Qe3 Re3 21.Kd2 Bf3 22.Nf3 Rf3+-) 17...Be5 (17...Bc7 18.Rc1+-) 18.Be5 Qe5 19.Ngf3 (19.Rb1 Bf5+-) 19...Qe6 20.Rb1 Qc6 21.Ne5 (21.Qb3 Nd7+-) 21...Qb7 22.Rg1 (22.Qb3 Re8 23.Nef3 Re6+-) 22...Qc7 23.f4 Nd7 24.Nd7 Bd7 25.Qb3 Rb8 (25...Re8 26.Qb6 Qb6 27.Rb6 Ba4 28.Kf2+-) 26.Kf2 (26.a5 b5 27.Qd5 Re8+-) 26...h6 (26...Qd6 27.Kg2+-) 27.Nf3 (27.a5 b5 28.Qd5 Qa5+-) 27...Be6 28.Qb5 (28.Qb2 Qb7+-) 28...d4 (28...Bd7 29.Qb2 Ba4 30.Rgc1+-) 29.Rgc1 (better 29.ed4!? Bd7 30.Qc4 Be6+-) 29...de3 30.Ke3 g5 (30...Bd7 31.Qb3+-) 31.Rb4! gf4 (31...cb4 32.Rc7 Pinning (32.Rc7 Deflection)) 32.Rf4 Bd5 33.Qb2 Re8 34.Kf2 Bf3 35.Kf3 Qc6 36.Kf2 Rd8 (36...Qe6 37.Qf6+-) 37.Rg4 Kf8 38.Qg7 Ke7 39.Re1 (39.Re1 Kd7 40.Qf7 Kc8 41.Rg8+-) 1–0. Trigance,Emile – Gomez,Pablo (1700), FICGS, 2012.

4.Bg2 Nf6 5.d4+=.

3.a3 c6?? 4.Bg7+- Nf6 (4...Be5 5.Be5 Nf6 6.Bb2+-) 5.Bh8 Nd5 6.Bb2 c5 7.bc5 Bc5 8.e3 Qb6 9.Qc1 Nc7 10.Nc3 d6 (10...Nba6 11.Nf3+-) 11.Nf3 (better is 11.d4 Bd4 12.ed4 Nc6+-) 11...Qc6 12.Bb5! b6 (12...Nb5 13.Na4 Combination) 13.Bc6 Nc6 14.d4 a5 15.dc5 bc5 16.0-0 (better is 16.Ne4!? Ke7 17.Bf6 Kf8+-) 16...Rb8 17.Rb1 d5 18.Ba1 Ne7 19.Rb8 Kd8 20.Ne5 f6 21.Nf7 Kd7 22.a4 (better is 22.Na4 Na6 23.Qb2 e5+-) 22...c4 23.Nb5 (23.Qa3 Ke8 24.Nd6 Kd7 25.Qc5 Na6 26.Qa7 Nc7 27.Ncb5 e5 28.Qc7 Ke6 29.Qd8 Bd7 30.Nc7 Kd6 31.Rb6 Nc6 32.Ne8 Ke6 33.Qf6) 23...Nb5 24.ab5 d4 25.ed4 e5 26.de5 fe5 27.Ne5 Ke6 (27...Kd6 28.Rd1 Nd5 29.Qh6 Kc7 30.Qg7 Ne7 31.Nc6 Bb7 32.Qe7 Kb6 33.Rb7) 28.Rc8! Nc8 (28...Nc8 29.Qh6 Mate attack) 29.Nc6 (29.Qh6 Ke7 30.Rd1 c3 31.Rd7 Ke8 32.Qe6 Ne7 33.Qe7) 29...Kd7 30.Re1 Kc7 31.Qg5 Ne7 (31...Kb7 32.Qg7 Kb6 33.Bd4 Kb5 34.Qb7 Nb6 35.Qb6 Ka4 36.Qa5) 32.Qe7 (32.Re7 Kd6 33.Qe5) 32...Kb6 33.Rd1 (33.Re5 c3 34.Qa7) 33...a4 (33...Kb5 34.Qb7 Ka4 35.Bd4 c3 36.Qb3) 34.Bd4 (34.Bd4 Kb5 35.Qb7) 1–0. Fournier,Frederic – danielitrox, Active, 2007.

3.a3 Nf6=.

3.Bg7 f6 4.Bh8 Qe7 5.e3 Be5 (5...Bb4 6.a3 Bd6 7.Qh5 Qf7 8.Qf7 Kf7 9.Bd3+-) 6.d4 Bd6 7.Bd3 (7.a3 Qf7 8.c4 Ne7+-) 7...Bb4 (7...Qf7 8.a3+-) 8.c3 Ba3 (8...Bd6 9.Qh5 Qf7 10.Qh7+-) 9.Qh5 Kd8 (9...Kf8 10.Na3 Qa3 11.Ne2+-) 10.Na3 Qa3 11.Qf7 Qc3 12.Ke2 Qa1 (12...c5 13.Qg8 Kc7 14.Bf6 Nc6 15.Qg3 d6 16.dc5 Qc5+-) 13.Qf8 1–0. GuestXCXP – GuestJBRC, freechess.org, 2018.

3.Bg7 Qf6 4.Bf6 Nf6 5.a3 e5 6.Nf3 e4 7.Nd4 Be5 8.c3 Bd4 9.cd4 Nc6 10.e3 d5 11.Bb5 0-0 (11...Bd7 12.d3+-) 12.Nc3 (12.Bc6!? bc6 13.d3 a5 14.ba5 Ra5 15.de4 Ne4+-) 12...Ne7 13.0-0 c6 14.Be2 h5 (14...a5 15.b5+-) 15.Bh5 Nh5 16.Qh5 Bg4 (16...Nf5+-) 17.Qg4 Ng6 18.f4 f5 19.Qg6 Kh8 20.b5 1–0. Fournier,Frederic (1780) – kaballoloco, Active, 2006.

3.Bg7 Nh6 4.Bh8 (4.Bh6?! Qf6 A) 5.c3 Qh6+/– 6.Nf3 e5 7.e4 Rg8 (7...Qf4 8.d3 Rg8) 8.a3 a5; B) 5.Nc3 Qh6 6.Nb5 e5 7.e3 a6 8.Nd6 Qd6; C) 5.Na3 Qh6 6.Nb5 e5 7.e3 a6 8.Nd6 Qd6; D) 5.d4 Qh6 6.c3 e5 7.e3 Rg8 8.a3 a5+/– (8...Nc6)) 4...Na6 (4...Bb4 A) 5.e3+- A1) 5...Be7 6.Qh5 Bf6 7.d4 Bh8 8.Qh6 Qf6+- (8...Nc6); A2) 5...d5 6.Qh5 Bf8 7.Bd3 Nd7 8.Nc3 c5+- (8...Ng8); B) 5.e4 B1) 5...Qh4 6.Qe2 Nc6 7.c3 (7.Nf3 Qg4 8.a3 Bc5) 7...Be7 8.Nf3 Qg4; B2) 5...Nc6 6.Qh5 Bf8 7.Nf3 Nb4 (7...Qe7 8.Ng5 Nb4) 8.Nd4 (8.Kd1 Qe7) 8...b6+- (8...a6)) 5.Bg7 (better is 5.a3!? A) 5...b6 6.e4 Bb7 7.e5 (7.Qh5 Bf8 8.Nf3 Qe7) 7...Bf8 8.Nf3 (8.Qh5 Qc8) 8...Be7; B) 5...Be7 6.e4 Nb8 7.Qh5 (7.d4 a5 8.Qh5 Bf8) 7...Bf6 8.c3 Bh8; C) 5...f6 6.e3 Kf7 7.Qh5 Kg8 8.Qh6 Kh8; D) 5...Nb8+- 6.e4 a5 7.b5 Bf8 8.d4 (8.Nf3 f6) 8...d5+- (8...d6)) 5...Ng4 (5...Nf5 6.Bb2 Nb4 7.a3 Nc6 8.e4 Nh6) 6.Nf3 (6.a3 Nf2 7.Kf2 Qh4 8.g3 Bg3 9.hg3 Qh1+-; 6.b5 Qg5 7.Bd4 Nb4 (7...Qb5 8.e4 Qb4) 8.h3 Nh2) 6...Nb4 7.Bb2 (7.e4 f5 8.ef5 Qe7) 7...f5 (7...Nc6 8.e4 e5) 8.h3 (8.Nc3 Ne5) 8...Nf6 9.e3 Ne4 10.Bc4 c6 11.Nd4 (11.a3 b5+-) 11...Qh4 12.0-0 f4 (12...c5 13.Nb5 Bb8 14.d3+-) 13.Qg4 (13.Nf3 Qh6+-) 13...Qh6 (13...Qg4 14.hg4 fe3 15.de3+-) 14.Qg8 Bf8 15.Nf3 (better is 15.a3!? Nf6 16.Qh8 Nbd5 17.ef4 c5+-) 15...Nc2 16.d3 (16.Bd3!? Nf6 17.Qh8 Nb4+-) 16...Na1? (16...Nf6 17.Qg5 Nh5+-) 17.de4 (17.Ba1?! Nf6 18.Qh8 Nh5+-) 17...Nc2 18.Ng5 (better is 18.ef4 Qf4 19.Ng5+-) 18...fe3 (18...Qg6 19.Qg6 hg6 20.ef4 d5+-) 19.fe3 (19.Qf7 Kd8 20.Ne6 Qe6 21.Qf8 Kc7 22.Be6 de6 23.fe3 Kb6+-) 19...Ne3 (19...d5 20.Qf7 Kd8 21.Bf6 Qf6 22.Rf6+-) 20.Qf7 (better is 20.Nf7 Nc4 21.Nh6 Kd8 22.Rf8 Kc7 23.Qg3 Kb6 24.Bd4 c5 25.Qb3 Kc6 26.Qc4 d6+-) 20...Kd8 21.Qf8 (better is 21.Bf6 Qf6 22.Qf6 (22.Qf8?! Qf8 23.Rf8 Ke7 24.Rf7 Ke8+-) 22...Kc7 23.Qf4 Kb6 24.Qf8 Nf1 25.Bf1+-) 21...Kc7 (21...Qf8 22.Rf8 Ke7 23.Rf7 Ke8+-) 22.Be5 d6 23.Qd6 Kb6 24.Bd4 (24.Qb4) 24...Ka5 25.Qa3 1–0. Trkn – CartmanUSM, itsyourturn.com, 2000.

4.Be5 f6 5.Bc3 Nc6 (5...d5 6.e4!+-) 6.e3 (6.e4 Nh6+-) 6...d5 (6...Nh6 7.Qh5 Nf7 8.Nf3+-) 7.Qh5 Kd7 8.b5 Na5 (8...Nce7+-) 9.Ba5 b6 (9...Ne7 10.c4+-) 10.Bb4 (10.Bc3 Qe7+-) 10...Ne7 11.Nf3 a6 12.Nc3 h6 (12...Qe8 13.Qh4 c5 14.Na4+-) 13.Nd4 e5 (13...Qe8 14.Qf3 Qf7+-) 14.Nd5! Nd5 (14...Nd5 15.Qf7 Double attack) 15.Qf7 Ne7 16.Bc4 Rf8 17.Be6 1–0. wiking – COPPERHEADS, queenalice.com, 2009.

4.Be5 Nf6 5.e4! d6 6.Bb2+-.

3.b5 a6!? 4.c4 ab5 5.cb5 Nf6+/-.

3.b5 Ke8 4.a4 b6 5.c4 Bb7 6.Nf3 Nf6 7.e3 Ke7 (7...a6 8.Be2+=) 8.Be2 Ke8 9.0-0 d6 10.d4 Nbd7 11.d5 (11.Nc3 a6+/–) 11...e5 (11...ed5 12.cd5 Nd5 13.Re1+=) 12.Nbd2 Nc5 13.e4 (13.Nb3!?+/–) 13...Nfe4+= 14.Ne4 Ne4 15.Nd2 Nd2 16.Qd2 Be7 17.Bh5 Bf6 18.Qe2 g6 19.Bf3 Kf8 20.Rad1 Kg7 21.Bc1 h6 22.Qd3 Qe7 23.Be4 a5 24.f4 ef4 25.Bf4 Rae8 26.Rde1 Bc8 27.Bd2 Bg5?? (better is 27...Be5+=) 28.Bg6 fg6 (28...Bd2 29.Re7 Re7 30.Bf7 Rf7 31.Qd4 Kg8 32.Rf7 Be3 33.Qe3 Kf7+-) 29.Re7 Re7 30.Bg5 hg5 31.Qd4 Kh7 32.Qf6 Rg7 33.Qg5 Bf5 34.g4 Be4 35.h4 Re8 36.Qf6 Reg8? 37.g5 Bf5?? 38.Qd4 Re7 39.Kf2 Rge8 40.Kg3 Re3 41.Kh2?? Rh3?? 42.Kg2+- Re2 43.Kg1?? Rg3-+ 44.Kh1 Be4 45.Qe4 Re4 46.Rf7 Kg8 47.Kh2 Rc3 (47...Rc3 48.Rf6 Rh4 49.Kg2 Rg4 50.Kf2 Rg5-+) 0–1. stoker – Usuukamadeek, Live Game Caissa's Web, 2004.

3.b5 f6 4.e3+=.

3.e3 Nf6 4.Nf3 h6 5.c4 d6 6.Be2 g5 7.Nc3 g4 8.Nh4 h5 9.f3 Nbd7 10.0-0 a5 11.a3 b6 12.Ne4 Bg7 13.Qc2 (worse 13.fg4 hg4 14.g3 Rg8 15.Nf6 Bf6 16.Bf6 Nf6=) 13...Bb7 14.g3 Ne4 15.fe4 (15.Bg7 Ng5 16.ba5+= (worse 16.Bh8 Qh8 17.Rae1 Qf6=)) 15...Be4=+ 16.d3 Bb2 17.Qb2 Bh7 18.Qd4 ab4 19.ab4 Ra1 20.Qa1 f6 21.Qd4 Qg8 22.Qf4 Qg5 23.Qg5 (better 23.Ra1!?-/+) 23...fg5-+ 24.Ng2 Ra8 25.e4 Ra2 26.Re1 Ne5 27.Bf1 (27.Ne3-+) 27...Nf3 28.Kh1 Ne1 29.Ne1 Ra1 0-1. azer3136 (2300) - ladies_first (2635), Rated blitz game, lichess.org, 2016.

3.Nf3 d6 4.e3 Kd7 5.Be2 f6 6.0-0 b6 7.d4 Bb7 8.c4 Nc6 9.a3 Qe7 10.d5 ed5 11.Qd5 Rb8 12.Nc3 Nb4?? 13.Qb5 Nc6+/– 14.Nd5 Qf7 15.Nd4 Nge7?? 16.Bf3 a6= 17.Qa4 b5=+ 18.cb5 Nd4-/+ 19.Bd4 Nd5 20.ba6 Bc6 21.Qa5?? Be7 22.a7 Ra8?? 23.Rfb1 g5 24.Bd5?? Qd5-+ 25.Qd5 Bd5 26.Rb2 Rhc8 27.Rab1 c5 28.Rb8 cd4 29.R1b7 Bb7 30.Rb7 Rc7 31.Rb8 Raa7 32.h4 de3 33.fe3 gh4 34.Kf2 d5 35.Kf3 Ra3 36.Kf4 Rcc3 37.Kf5 Re3 38.Rb7 Kc6 39.Re7 Re7 40.Kf6 Re2 41.Kg7 d4 42.Kh7 d3 43.Kg6 d2 44.Kg5 d1Q 45.g4 h3 46.Kg6 h2 47.g5 h1Q 48.Kg7 Qd7 49.Kg6 Re6 50.Kf5 Ra5 51.Kg4 Qd4 52.Kg3 Qhg1 53.Kh3 Re3 0–1. erisonpassos – azrail44, kurnik, 2011.

4.c4 Kc5?? 5.Nc3+- Kc4 (5...c6 6.Ne4 Kb6 7.c5 Kc7 8.Be5 d6 9.Nd6 Bd6 10.cd6 Kd7 11.Bg7 Nf6 12.Bh8 Qh8+-) 6.Ba3!! Ba3 (6...Ba3 7.Qb3 Double attack (7.Qb3 Decoy)) 7.Qb3 Kd4 (7...Kc5 8.Qa3 Kb6 9.Na4 Ka5 10.Nc5 Kb5 11.Nb7 Qe7 12.e4 Kc6 13.Na5 Kb6 14.Rb1 Qb4 15.Qb4) 8.Qa3 (8.Nf3 Kc5 9.Na4 Kd6 10.Qa3 Kd5 11.Qd3) 8...Ke5+- 9.Qc5 (9.Nf3 Kf5 10.g4 Kg6 11.Ne5 Kh6 12.Nf7 Kg6 13.Nh8 Kh6+-) 9...d5 (9...Kf6 10.Nf3 h6 11.Ne4 Kg6 12.Ne5 Kh7 13.Nf7 Qe7+-) 10.f4! Kf6 (10...Kf4 11.Qd4 Double attack) 11.Nf3 Nd7 12.Qd4 (better 12.Qb4 Qf8 13.Qd4 Ke7 14.e3+=) 12...e5?? (better 12...Ke7+=) 13.fe5 (better 13.Nd5 Kg6 14.fe5 h5+-) 13...Ke7 14.Nd5 Ke8 (14...Kf8 15.Rc1 c5 16.bc6 bc6 17.Rc6+-) 15.Qc4 (15.Rc1 c5 16.bc6 bc6 17.Rc6 Ne7 18.Nc7 Kf8+-) 15...c6 (15...Kf8 16.Nc7 Rb8 17.e6+-) 16.bc6 bc6 (16...Nb6 17.cb7 Bb7 18.Nc7 Kf8 19.Qb4 Qe7 20.Qe7 Ne7 21.Na8 Ba8 22.e3+-) 17.Nf4 (better 17.Qc6 Rb8 18.Qd6 Ne7+-) 17...Ne7 18.Ng5?? (better 18.e6 Nb6 19.ef7 Kf8 20.Qc5+-) 18...Ne5+= 19.Qb3?? (19.Qc3 f6 20.Nfe6 Be6 21.Ne6 Qd6 22.Ng7 Kf7+=) 19...Qd6 (better 19...Qd4 20.Qc3 Qf4-+) 20.d4?? (20.e3 Qf6 21.Ne4 Nd3 A) worse 22.Qd3 Qa1 23.Kf2 Qe5=+ (23...Qa2? 24.Qc3 Rb8 25.Qg7+-); B) 22.Bd3 Qa1 23.Bb1+=) 20...Qd4-+ 21.e3 (21.Rd1 Qf4 22.Nf3-+) 21...Qd6 (better 21...Qa1 22.Kf2 Ng4 23.Kg1 Nd5-+) 22.Bc4?? (better 22.Rd1 Qb8 23.Bc4 Qb3 24.Bb3=+) 22...Qf6?? (22...Nc4 23.Qc4 Qf6 24.0-0 Qg5 25.Rad1-+) 23.Nf7?? (better 23.Ne4 Qh4 24.g3+-) 23...Nf7 (23...Nc4 24.Rc1 Rf8 25.Qc4 Qf7 26.Qf7 Rf7 27.0-0-+) 24.Bf7? (better 24.0-0 Nd6 25.Nd5 cd5 26.Rf6 dc4 27.Qb4 gf6 28.Qd6=+) 24...Qf7-+ 25.Qd3 (25.0-0 Qb3 26.ab3 a6-+) 25...Qf5 (25...g5 26.0-0-0 Qg7 27.Nh5 Qa1 28.Qb1 Qc3 29.Qc2 Qe3 30.Rd2-+) 26.Qd2 (26.Qa3 g5 27.Nh5 Qg6-+) 26...Qe4 (26...Ba6 27.Qb2-+) 27.0-0-0 (27.0-0 Rf8-+) 27...Kf7 (better 27...Bf5 28.Qd3 Qb4-+) 28.Nh5 (28.Qd3 Qb4 29.Rhf1 Qc5 30.Kd2-+) 28...Bf5 29.Rhf1 (29.Qb2 Qe3 30.Rd2 Qc5 31.Kd1 Bg4 32.Ke1-+) 29…Qb1 0-1. johannn (2010) - Lance5500 (2650), lichess.org, 2019.

4.c4 Ke7 5.d4 (better 5.Nc3+-) 5...Kd6? (better 5...a6+/-) 6.Nc3 Ke7 7.Nf3 Kf6 (7...Ke8 8.e4+-) 8.e3 (better 8.e4+-) 8...Kg6 (8...Ke7 9.Bd3+-) 9.Bd3 (9.Ne5 Kh6 10.Nf7 Kg6 11.Nh8 Kh6 12.Nf7 Kg6 13.Nd8 Nh6 14.Qf3 Nf5 15.g4 Bd6 16.gf5 Kf6 17.fe6 Bf4 18.Qf4 Kg6 19.Rg1 Kh5 20.Be2) 9...f5 (9...Kf6 10.0-0+-) 10.Ne5 Kf6 11.Qh5 Nh6 12.e4 d6 (12...g6 13.Qh4 g5 14.Qh5+-) 13.Nf3 (13.Bc1 f4 14.Bf4 g6 15.Qh4 Kg7 16.Bh6 Kg8 17.Qd8 Nd7 18.Qe8 Ne5 19.Qf8) 13...Ke7+- 14.ef5 Qe8 15.Qh4 Kd7 16.0-0 Qe7 (16...Nf5 17.Bf5 ef5+-) 17.fe6 Kd8 (17...Qe6 18.Ng5 Be7 19.Nd5+-) 18.Qe7 (better 18.Ng5 c6 19.d5+-) 18...Be7 19.Rae1 c6 (19...a6 20.h3+-) 20.bc6 (20.d5 Bf6+-) 20...bc6 (20...Nc6 21.Nd5 Ng4 22.Ba3+-) 21.Be4 (better 21.d5 Ng4+-) 21...Na6 (21...Be6 22.d5 Bd7 23.Nd4+-) 22.Bc6 Rb8 23.Na4 (23.Nb5!? Nb4 24.Na7 Bb7+-) 23...Nb4 24.Ba3 (better 24.Be4 Be6 25.d5+-) 24...Nc6+= 25.Ne5?? (better 25.d5 Na5 26.Re4+=) 25...de5-+ 26.de5 (26.Be7 Ke7 27.d5-+) 26...Ba3 27.Rd1 Ke7 28.Nc5 (28.Rd3 Bb4 29.a3-+) 28...Bc5 29.Rd5 Nd4 (better 29...Bb4 30.a3 Ba3 31.f4-+) 30.Rd1 (30.Rc5 Ne2 31.Kh1-+) 30...Ne2 31.Kf1 Nc3 32.Rc5 Ba6 (better 32...Nd1 33.Rc7 Ke6 34.Rg7-+) 33.Rd7 (33.Rc1 Na2 34.Ra1 Nb4 35.Rc7 Ke6-+) 33…Ke6 (33...Ke6 34.Rd6 Kf5 35.g4 Kg4 36.Rd4 Kf5-+) 0-1. johannn (2010) - Lance5500 (2650), lichess.org, 2019.

3.a3 a6 4.e4 b6 (4...Nc6 5.Nf3+=) 5.Nf3+= Bb7 (5...d5 6.ed5 ed5 7.Be2+=) 6.e5 (6.Bd3 d5 7.ed5 Bd5+=) 6...Nc6 7.Be2 0-0-0 (7...d6 8.0-0+=) 8.0-0 d6 9.d4 (better is 9.ed6!? Qd6 10.c4+=) 9...de5+= 10.Qd3 (10.c3!?+=) 10...ed4 (better is 10...e4 11.Qe4 Nb4-+) 11.Nd4? (better is 11.c3 e5 12.Qf5 Qd7 13.Qd7 Rd7 14.b5 ab5 15.Bb5-/+) 11...e5?? (better is 11...Nd4 12.Bd4 c5 13.Bc5 Qf6-+ (13...Rd3 14.Be7 Be7 15.Bd3+/–; 13...bc5?! 14.Qe3-+)) 12.Bg4 (12.Nc6 Bc6 13.Qa6 Bb7+=) 12...Kb8 13.Nc6 Bc6 14.Qa6 Bb7 (14...Qg5 15.Bh3=) 15.Qe2+= f6 (15...Nf6 16.Bf5+=) 16.c4 (16.Nd2 g5+=) 16...Nh6 17.Bf3 (17.Bh3 g6+=) 17...Bf3 (17...e4 18.Bh5=) 18.Qf3+= g5 (18...Qe6 19.c5+=) 19.Nc3+/– g4 (19...Qe6 20.Rad1 Bd6 21.Nd5+/–) 20.Qe2 Bg7 (20...Qe6 21.Rad1 Bg7 22.a4+/–) 21.Nd5 Qe6 (21...Qd6 22.a4+-) 22.Rfd1 (22.a4 Rd7+-) 22...Kb7 (22...Rd7+/–) 23.f3 (23.a4!? c6 24.Nc3+/–) 23...gf3+= 24.Qf3 e4 (24...c6 25.Ne3+=) 25.Qe3 (25.Qb3 Qf7+/–) 25...Ng4 (better is 25...Nf5 26.Qh3 Rde8+/–) 26.Qd4 (better is 26.Qf4!? Rd7 27.h3+/–) 26...Rhg8= 27.h3 (27.Nf4 Qf5 28.Nd5-/+) 27...f5-/+ 28.Qd2 e3 29.Qe2 (29.Qc2 Bb2 30.Qb2-+) 29...Nf2 (better is 29...Bb2 30.Qb2 e2-+) 30.Re1?? (30.Bg7 Rg7 31.Qe3 Qe3 32.Ne3 Nd1 33.Nd1-+) 30...Bb2-+ 31.Qb2 (31.Qf3 Ba1 32.Ne3 c6 33.Ra1-+) 31...Nh3 (better is 31...Rd5 32.Re2 Nh3 33.Kf1-+) 32.Kh1?? (32.Kf1 f4 33.Qe2-+) 32...Qe4 (32...Rd5 33.Re2 Qh6 34.Re3 Nf2 35.Kg1 Qh1 36.Kf2 Rg2 37.Kf3 Qh3 38.Kf4 Qg4) 33.Re2?? (better is 33.Re3 Qc4 34.Nf6+=) 33...Nf2-+ 34.Rf2 ef2 35.Qf2 Qc4 36.Nf6 (36.Ne3 Qe4 37.Rf1-+) 36...Qh4 (better is 36...Rg6-+) 37.Qh4+- Rd2 (37...Rg7+-) 38.Ng8 (38.Ng8 Rd7 39.Rf1+-) 1–0. gtate (2015) – maf (2105), net–chess.com, 2005.

3.a3= Na6 4.e3 (4.e4 d5+=) 4...b6 (4...Nb8 5.Nf3+=) 5.Nf3 (5.Qf3 c6+=) 5...Bb7 (5...c5 6.b5 Nc7 7.a4+=) 6.Be2 0-0-0 (6...c5 7.b5 Nc7 8.Nc3+=) 7.0-0 Nb4?? (better is 7...Nb8+/–) 8.ab4+- Qb4 9.Bc3 Qg4 (9...Qe4 10.Ra7 Kb8 11.Ra1+-) 10.Ba6 (better is 10.Ra7 Qg6+-) 10...Ba6 11.Ra6 Kb7 12.Qe2 b5 (12...d5+-) 13.Qb5 Ka8 (13...Kc8 14.Ra7 Qg2 15.Kg2 Nf6 16.Qb7) 14.Bd4 (14.Bd4 Qd4 15.Nd4+-; 14.Qa5 Qb4 15.Ra7 Kb8 16.Qc7) 1–0. Trkn – Ricky, itsyourturn.com, 2000.

3.a3 b5 4.e4 (4.Nc3 c6+=) 4...Bb7 (4...c6 5.Bc3=) 5.Nc3 a6 6.d4 g6 (6...d5 7.e5+=) 7.Nf3 Bg7 8.Bd3 Nc6 9.0-0 h6 (9...Nd4 10.Nd4 Bd4 11.Nd5 ed5 12.Bd4+/–) 10.Re1 (10.d5 Nb8+/–) 10...Kd8 (10...Rc8 11.Qc1 Nf6 12.e5+/–) 11.e5 h5 (11...Na7!?+/–) 12.d5+- Nb8 13.Nb5?? (better is 13.Be4 Qf8 14.de6 Be4 15.ef7+-) 13...ab5= 14.de6 (14.d6 cd6 15.ed6 Qf8 16.Bg7 Qg7 17.Bb5 Nc6=) 14...fe6 15.Bg6 (15.Bb5 Nh6=) 15...Bd5 16.Bd3 (16.Be4 c6 17.Bd4+=) 16...h4 (better is 16...c6!?+=) 17.Bb5+= Rh5 (17...h3 18.g3+=) 18.c4 (18.Be2 h3 19.c4 Bb7+=) 18...Bb7= 19.Bd4 (19.Re3 Rf5+=) 19...Nh6 (19...Qf7 20.Re3=) 20.h3 Nf5 (20...Rf5 21.Bc5 Qf7 22.Nh4+=) 21.Bc5 Qf7 22.Qb3 (22.Nh2 Qg6 23.Ng4 d6+=) 22...d6 (better is 22...Ne7!? 23.Re3 Rf5 24.Nh4 Re5 25.Re5 Be5+=) 23.Rad1+= d5?? (better is 23...c6 24.Ba4 d5+/–) 24.cd5+- ed5 (24...Bd5 25.Rd5! Kc8 26.Rd2+-) 25.e6 Qf6 (25...Qe7 26.Be7 Ne7+-) 26.Rd5 Bd5 27.Qd5 Kc8 28.Qa8 1–0. Wall,Bill – Rayani, internet, 2002.

3.a3 c6 4.e3 d5 5.Nf3 Na6 6.d4 Nc7 7.c4 dc4 8.Bc4 Bd7 9.Bd3 0-0-0 10.Nbd2 Kb8 11.0-0 Ka8 12.h3 Nf6 13.Re1 Nfe8 14.Rc1 f5 15.Nc4 Rg8 16.Qc2 Nf6 17.e4 fe4 18.Be4 Ne4 19.Qe4 h5?? (19...g5 20.Nfe5+/–) 20.Nce5 (better is 20.Qh7 Qf6 21.d5+-) 20...g5+/– 21.Nd7 Rd7 22.Ne5 Rd8? (22...Rd5+=) 23.b5?? (better is 23.Rc6 Nd5 24.Rc2+-) 23...cb5 24.Nf3 h4 (better is 24...g4!? 25.hg4 Rg4+=) 25.Rc2 Bg7 26.Rec1 (better is 26.Ng5 Bd4 27.Bd4 Rg5 28.Rec1+-) 26...Rgf8?? (better is 26...Nd5+=) 27.Bc3 (better is 27.Rc7 Qc7 28.Rc7+-) 27...Bh6?? (better is 27...Rf4 28.Bb4 A) 28...Re4?? 29.Be7 Rb8 30.Rc7 Bd4 31.Bd6+- (worse is 31.Bg5 Bb2+-; worse is 31.Nd4 Rd4 32.Bg5 a5+-); B) 28...Qd7 29.Qf4 gf4 30.Rc7 Qe8 31.Rg7 Rc8+-) 28.Ba5 (28.Bb4 Qe8 29.Bf8 Qf8 30.Rc7 Rb8 31.Qe6 g4 32.Rb7 Bc1+-) 28...Nd5 (28...Na6 29.Bd8 Qd8 30.Qe6 Qf6 31.Rc8 Nb8 32.Rb8 Kb8 33.Rc8 Rc8 34.Qf6 Bf8+-) 29.Bd8 Rd8 (29...Qd8 30.Qe6 Nb6 31.Qh6 Rg8+-) 30.Ne5 (30.Rc8 Rc8 31.Rc8) 30...Nf4 (30...Rb8 31.Qg6 Bg7+-) 31.Rc7 (31.Rc8 Rc8 32.Rc8) 31...Qe8 (31...Qc7 32.Rc7 Nd5+-) 32.Qb7 1–0. Fournier,Frederic (2025) – gaffio (1905), Active Blind, 2007.

3.a3 Nc6 4.b5 Na5 5.e3 b6 6.c4 Bb7 7.Nf3 Nf6 8.Be2 Ne4 9.0-0 Qc5 10.d3 Nf6 11.Nc3 Ng4 12.Nd4 Qd6?? 13.Bg4+- h5 14.Bf3 Bf3 15.Qf3 Rb8 16.Ne4 Qe7 17.a4 g6 18.Ba3 c5 19.bc6 d6 20.Bd6 Qh4 21.Bb8 Be7 22.Bg3 Qg4 23.c7 0-0 24.Nf6 Kg7 25.Ng4 hg4 26.Qg4 f5 27.Ne6 Kf7 28.Ng5 Kg7 29.Qd4 Bf6 30.Qd7 Kh6 31.Nf7 Kh5+- 32.c8Q Rc8 33.Qc8 Nb3 34.Rab1 Nd2 35.Rfd1 Nb1 36.Rb1 b5 37.ab5 a5 38.ba6 g5 39.Qf5 Bd4 40.Qg5 1–0. elsh1403 – lutkas11, kurnik, 2011.

3.a3 d5 (--> 1.b4 d5 2.Bb2 e6 3.a3 Qe7).

3.a3 Qd6 4.e3 Be7?? (better is 4...Qe7+=) 5.Bg7+- Bf6 6.Bh8 Bh8 7.Nc3 Bf6 8.Nf3 Na6 9.Be2 b6 10.Ne4 Qc6 (10...Qe7 11.d4 Bb7+-) 11.Nf6 Nf6 12.0-0 (better is 12.b5 Qc5 13.ba6 Qa5+-) 12...Qd6 13.c4 1–0. Fournier,Frederic – walter31(C), Active, 2007.

3.a3 e5 4.Nf3 (better 4.Nc3+=) 4...h6? (better 4...e4!? 5.Nd4 Nc6+=) 5.Be5+- d6 6.Bb2 Bg4 7.e3 Qe4? (better 7...Nc6+-) 8.Nc3 Qf5 9.Bd3 Qh5 10.Ne4 (10.Be4 c6 11.Ne2 d5+-) 10...Bf3 11.gf3 d5 (11...Ne7 12.Ng3 Qh3 13.f4+-) 12.Ng3 Qg5 13.Nf5 Qg2 (13...Rh7 14.f4 Qd8 15.Ng3+-) 14.Ng3 Qh3 15.Bf5 Qh4 16.Bc8 Nd7 17.Bb7 Rb8 18.Bd5 Ngf6 19.Bc6 Rb6 20.b5 a6 (20...Bd6 21.Nf5 Qg5 22.e4+-) 21.a4 (21.Bd4 Rb5 22.Qe2 Qg5+-) 21...Be7 (21...Qc4 22.Bf6 gf6 23.Nh5+-) 22.a5 Rb8 (22...Rc6 23.bc6 Nb8 24.Qe2+-) 23.Bd4 ab5 (23...Qh3 24.ba6 Qe6 25.a7 Qc6 26.ab8Q Nb8 27.c3+-) 24.a6 0-0 (24...Qh3 25.a7 0-0 26.ab8R Rb8 27.f4+-) 25.Nf5 Qg5 (25...Qh3 26.Ne7 Kh7 27.Rg1+-) 26.Ne7 Kh8 27.f4 Qh4 28.Qf3 Ng4 29.Bg7! Kg7 30.Nf5 Kh7 1–0. Pierre – Stept, internet, 2019.

3.a3 f6 (--> 2.Bb2 f6 3.a3 Qe7).

3.a3 Qg5 4.Nf3 Qg6 5.e3 b6 6.Bd3 Qh5 7.0-0 Nf6 8.Be2 Bb7 9.d3 Ng4 10.h3 Bd6?? 11.Bg7?? Rg8=+ 12.hg4? Qg4 13.Ne5?? Qg2 0–1. exp2005 – lutkas11, kurnik, 2011.

3.a3 Nh6 4.Nf3 Nc6 5.b5 Na5 6.e4 a6 7.ba6 ba6 8.Nc3 Bb7 9.Bd3 Ng4 10.Rb1 Qc5 11.0-0 Bd6 12.Be2 Nc4 13.d4 Qc6 14.d5 Qc5 15.Bc4 Qc4 16.Nd2 Qc5? (16...Qd4 17.Na2 Bh2 18.Kh1 Nf2 19.Kh2 Qb2 20.Rb2 Nd1 21.Rb7 Ne3+-) 17.Qg4 ed5 (17...Bf8+-) 18.ed5 Bd5 (18...0-0-0 19.Nde4 f5 20.Qf5+-) 19.Nd5 Qd5 20.Rfe1 Kf8 (20...Be7 21.Rbd1 h5+-) 21.Qg7 1–0. b4_player (2160) – frag, GameColony.com, 2003.

3.b5 d6 4.a4 c6 (4...Nf6 5.Nf3=) 5.e3 cb5 (5...Nf6=) 6.c4 (6.ab5 e5+=) 6...Bd7 (better 6...bc4!? 7.Bc4 Nc6-/+) 7.cb5 d5 (7...Nf6 8.Be2=) 8.Nf3+= f6 9.Be2 g6 (9...Qf7 10.Ba3+=) 10.0-0 Bg7 11.d4 Nh6 12.Nc3 Bc8 13.Ba3 Nd7?? (better 13...Qd8+-) 14.Be7+- b6 (14...Ke7 15.Rb1 Kf7+-) 15.Bd6 Bb7 16.a5 Ne5 17.a6 (better 17.de5 Nf7 18.a6 Nd6 19.ed6 Bc8 20.Nd5 Rb8+-) 17...Bc8 18.de5 Kd7 19.Bb4 (better 19.Nd5 Nf5 20.Nc7 Kd8+-) 19...fe5 20.Nd5! ed5 (20...Ke8 21.Ng5 ed5 22.Qd5 Bf6 23.Qc6 Bd7 24.Qf6 Bb5 25.Bb5) 21.Qd5 Theme: Double Attack. 21...Ke8 22.Qa8 (22.Bc4 g5 23.Qc6 Bd7 24.Qa8 Bc8 25.Qc8) 22...Kd7 (22...Bf6 23.Qc8 Kf7 24.Qd7 Be7 25.Qe7 Kg8 26.Qf8) 23.Qc6 Kd8 24.Rad1 Bd7 25.Qd7 1–0. BeepBeepImAJeep (2550) – HUN_ATTILA (1795), lichess.org, 2016.

3.c3 f5 4.e3 Nf6 5.d4 Nc6 6.Nf3 g6 7.Bd3 Bg7 8.a4 0-0 9.Nbd2 Kh8 10.Qc2 Qf7 11.0-0 Qg8 12.h3 d6 13.a5 Bd7 14.Rfe1 Be8 (14...a6 15.e4+=) 15.e4 Bf7 16.ef5 ef5 17.Re2 b6 (17...a6 18.Rae1+=) 18.ab6 ab6 19.Ra8 Ra8 20.Re1 Rb8 21.Ra1 Ne7 22.Re1 c6?? (22...Nc6!?=) 23.Qb1 (23.Re7 b5+-) 23...c5?? (better is 23...Re8!?+=) 24.dc5 (24.Re7!? cb4 25.c4 Qf8+-) 24...bc5? (24...Qd8 25.cb6 Rb6 26.Ng5+/–) 25.bc5?? (25.Re7 Nd5 26.Ra7 Nf4+-) 25...dc5? (better is 25...Qd8+/–) 26.Qc2?? (better is 26.Re7 Nd5 27.Re5+-) 26...Nd7?? (26...Nc6 27.Be2=) 27.Nc4 (better is 27.Re7 Be6 28.Ng5+-) 27...Bc4 28.Bc4 Qc4 29.Nd2?? (29.Re7 Nf8=) 29...Qg8 (29...Qa2 30.Rb1-+) 30.Nf3?? (30.Re7 Qd8 31.Re3 Ne5=) 30...Nf8 (better is 30...Nd5-+) 31.c4?? (better is 31.Re7 Qb3 32.Re2+=) 31...Bb2 (better is 31...Rb2 32.Qd3 Nc6-+) 32.Qb2 (32.Re7 Ne6 33.Qe2-+) 32...Rb2 (32...Rb2 33.Re7 Qc4-+) 0–1. Fournier,Frederic (1940) – dragofire (2095), Active, 2009.

4.b5 a4 5.Nf3 Ra5 (5...Nf6 6.e3=) 6.e3 b6 (6...d6 7.d4+=) 7.Be5 (7.c4 Bb7+/–) 7...d6+= 8.Bc3 Ra8 9.Bc4 f6 10.d4 Bb7 (10...d5 11.Bd3+=) 11.d5+/– e5 12.0-0 (12.e4 f5 13.ef5 Qf6+/–) 12...h5 (12...f5 13.Bb2+/–) 13.e4+/– h4 14.h3 g5 15.Nfd2 Bc8 16.Be2 Bh3?? (better is 16...Nh6+/–) 17.gh3+- Bh6 (17...Nh6 18.Nc4+-) 18.Bg4 Bg7 19.Nc4 Nd7 20.Bb4 c5 (20...Nh6+-) 21.dc6 Nc5 22.Nd6 Kd8 (22...Kf8 23.Bc5 bc5+-) 23.Bc5 Kc7 24.Nc8! Qc5 (24...Rc8 25.Be7) 25.Qd7 Kb8 26.Qb7 1–0. kamrat – mightyking2, GameColony.com, 2002.

4.b5 b6 5.e3 a4 (5...e5 6.Qf3 Ra7 7.Qf5+=) 6.Nf3 Bb7 7.Be2 c6 8.0-0 d5 9.c4 cb5 10.cd5 Bd5 11.Bb5 Bc6 12.Nc3 (12.Bc6 Nc6 13.Nc3 Nf6+/–) 12...Bb5+= 13.Nb5 Na6? (better is 13...Qd7 14.Nc3 Ra5+=) 14.Qa4+- Nc5 (14...Kd8+-) 15.Nc7 (15.Nd6! Kd8 16.Qa8 Kd7 17.Ne5 Kd6 18.Qc6) 15...Kd8+- 16.Qa8 Kc7 17.Ne5 Nf6 (17...f6 18.Qc6 Kd8 19.Qb6 Kc8 20.d4 fe5 21.dc5+-) 18.Qc6 Kb8 19.Qb6 Nb7 (19...Kc8 20.d4 Qc7 21.dc5 Bc5+-) 20.Nc6 Kc8 21.Na7 Kb8 22.Nc6 Ka8?? (22...Kc8 23.Ne7 Be7 24.Rfc1 Nc5 25.Qc6 Kb8 26.Be5 Ka7 27.Qc7 Ka8 28.Rab1 Nb3 29.Rc6 Bc5 30.Ra6 Ba7 31.Ra7) 23.Ne7 (23.Qa7) 23...Be7 24.Qa6 Kb8 25.Be5 Kc8 (25...Nd6 26.Rfc1 Nd5 27.Rab1 Nb6 28.Rb6) 26.Rac1 Kd7 (26...Bc5 27.Rc5 Kd8 28.Qb7 Nd7 29.Rc8 Ke7 30.Qb4 Nc5 31.Qc5 Kd7 32.Qc7) 27.Qb7 (27.Qc6 Kd8 28.Qc8) 27...Ke8 28.Rc8 Bd8 29.Rfc1 (29.Qc7! Kf8 30.Qd8 Ne8 31.Qe8) 29...Nd7+- 30.Qc6 f6 (30...h6 31.Bc7 Ke7 32.Qd6 Kf6 33.Rd8 Nf8 34.d4 Rg8 35.e4 Kg6 36.d5 Kh7 37.Rf8 e5 38.Rf7 Rb8 39.Bb8 h5 40.Qe5 Kg6 41.Qg7) 31.Bc7 (31.Qe6 Kf8 32.Rd8) 31...Kf7+- 32.Qd7 1–0. gtate (1815) – maf (1610), net–chess.com, 2002.

4.b5 d5 5.Nf3=.

4.b5 d6 5.c4 (5.Nf3 Nf6=) 5...f5 (5...Nf6 6.d4=) 6.g3 Nd7 7.Bg2 Ngf6 8.Nc3 (8.Nf3 Nb6 9.d3 e5+=) 8...Rb8 (8...Nb6 9.d3=) 9.Nh3 b6 10.0-0 h6 (10...Bb7 11.Bb7 Rb7 12.d4+=) 11.e4 Nc5 (better is 11...fe4!? 12.Ne4 Qf7+/–) 12.Nf4+- Qf7 13.ef5 e5 14.Bc6 Kd8 15.Ng6 Rg8 16.d4 (16.f4 Nd3 17.fe5 Nb2+/–) 16...ed4 17.Nd5 (17.Qd4 Bf5 18.Ne5 Qh5+-) 17...Bf5 18.Nh4 (18.Ngf4 d3+=) 18...Be6 (18...Bd3 19.Re1+=) 19.Bd4 (worse is 19.Qd4 Nb3 20.Qd3 Na1 21.Ra1 Kc8+=) 19...Nd5 20.cd5 Bh3 21.Ng2 (21.Re1 Be7 22.Nf3 Rf8+=) 21...g5 22.Ra2 Bg7 23.f4 (23.Bg7 Qg7 24.Re1 Qg6+/–) 23...Bg4 (23...Bd4 24.Qd4 gf4 25.Rf4+/–) 24.Qg4+/– Bd4 25.Kh1 Rf8 26.Re2 Nd7 (26...Qf6 27.Rfe1 Be5 A) worse is 28.Re5 de5 29.Qe2 e4-/+ (29...ef4?? 30.Qe8 Re8 31.Re8); B) 28.Rf2+/–) 27.Re6 (27.Qe6 h5+/–) 27...Ne5 28.Qe2 Nc6 29.bc6 b5 (29...Bc5 30.Qd3+=) 30.Rd1 (30.Qd2!? Bb6 31.Rb1+/–) 30...Bg7 31.Rb1 (31.Re1 b4=) 31...b4 (31...gf4? 32.Rb5 Ra8 33.Nf4+-) 32.ab4 ab4 (32...Rb4?? 33.Rb4 ab4 34.Qa6 Qe6 35.de6+-; 32...gf4 33.Nf4 ab4 34.Re4+-) 33.Qc4 Bc3?? (better is 33...Qh5+/–) 34.Qc3!!+- Qe6 (34...bc3 A pinning theme 35.Rb8 The nicest combinations are those leading to mate) 35.de6 bc3 36.Rb8 Ke7 37.Rb1 c2 38.Re1 Rb8 (38...d5 39.Ne3 Ke6 40.Nc2 Kd6 41.fg5 hg5 42.Nd4+-) 39.Ne3 gf4 (39...Ke6 40.Nc2 Kd5 41.f5+-) 40.Nc2 (40.Nd5 Ke8 41.gf4 Rb1 42.Nc7 Ke7 43.Nd5 Ke8 44.Nf6 Ke7 45.Ng8 Ke8 46.Nf6 Ke7 47.Nd5 Ke8 48.Nf6=) 40...fg3 (40...f3 41.Nd4 Rf8 42.Rf1+-) 41.hg3 d5 (41...h5 42.Nd4+-) 42.Nd4 Kf6 43.Kg2 (43.Kg2 h5 44.Kh3+-) 1–0. Bulcourf,Carlos (2300) – Minzer,Claudio Javier, Buenos Aires BCA op, 1989.

4.Nc3 ab4 5.Nb5 d5 (better is 5...Ra5 6.Nc7 Kd8 7.ab4 Ra1 8.Qa1 Kc7 9.Bg7 Bg7 10.Qg7 Qf6 11.Qg3 d6-/+) 6.e3 (better is 6.Be5 Na6 7.ab4=) 6...c6-/+ (6...ba3?! 7.Be5 Na6 8.Ra3=) 7.Nd4 (7.ab4 Ra1 (7...cb5?? 8.Ra8 Qc7 9.Bb5 Nc6 10.Be5+-) 8.Qa1 cb5-/+) 7...Nh6 (7...ba3 8.Ndf3-+) 8.Ngf3? (better is 8.ab4!? Ra1 9.Ba1 Qb4 10.f4+=) 8...ba3 9.Bc3 (better is 9.c4-+) 9...c5 (better is 9...e5 10.Ne2 Nd7-+) 10.Nb5-/+ a2 (10...Nc6!? 11.Na3 e5-/+) 11.Be5= Na6 12.Ra2 Ng4 (12...Nf5 13.Qa1+=) 13.Bg3 (13.Nd6 Kd8+=) 13...e5 (13...Qd7 14.h3 Nf6 15.Ra6 Ra6 16.Nc7 Ke7 17.Ne5+=) 14.Bh4 (14.h3!? Nf6 15.Be5+=) 14...Qd7 (14...f6!?-/+) 15.h3= c4 16.Nc3 Be7?? (16...Nh6 17.e4 de4 18.Ne5 Qd4 19.Nc4 Bb4+/–) 17.Be7+- Qe7 18.hg4 0-0 Black intends e4 (18...d4 19.Ne4 (19.ed4?! ed4 20.Ne2 d3+=) 19...Be6 20.Nfg5+- (20.Ne5?! Bd5 21.ed4 Be4+/–)) 19.Nd5 Qe6 (19...Qc5 20.e4 Be6 21.Ne3+- (21.Ne5?! Bd5 22.ed5 Rfe8+-)) 20.Nc3 (better is 20.Bc4!? b5 21.Bb3 Qd6+-) 20...e4 (20...Qd6 21.Bc4 Bg4 22.Bd5+-) 21.Ng5 (21.Ng5 Qc6 22.Nh7+- (22.Nce4?! h6+-; 22.Rh7?! f6+-)) 1–0. wlittle (2185) – maf (2105), net–chess.com, 2004.

4.e3 ab4 5.ab4 Ra1 6.Ba1 Nf6 (6...Qb4 7.Nf3=+) 7.Nf3 (7.b5 e5=) 7...Qb4=+ 8.Be2 Ne4 9.0-0 Nc6 10.d3 Qa4 11.Bg7 (11.Bb2 Qb5 12.Bg7 Nf2 13.Rf2 Bg7=+) 11...Bg7=+ 12.de4 Nb4 (12...Qe4 13.Na3=+) 13.c4 (13.c3 Qd1 14.Rd1 Nc6=) 13...Qd1=+ 14.Rd1 b6 15.e5 (15.Kf1 d6=+) 15...Nc6-/+ 16.Nc3 Ke7 (16...Bb7!?-/+) 17.Nb5= Kd8 (17...Bb7 18.Nc7 Ne5 19.Ne5 Be5 20.Nb5=+) 18.Nbd4 Ne5?? (better 18...Bb7 19.Nc6 Bc6=) 19.Ne5+- Be5 (19...Ke7 20.f4+-) 20.Nc6 Ke8 21.Ne5 f6 22.Bh5 (22.Nf3 Ke7+-) 22...Ke7 23.Nd3 Bb7 24.Bf3 (24.Ra1 d5 25.c5 Ra8 26.Ra8 Ba8 27.cb6 cb6+-) 24...Ba6 (24...Bf3 25.gf3 Ra8 26.Kg2+-) 25.Nb2 c6 26.Ra1 Ra8 27.Kf1?? (better 27.Be2+-) 27...Bc4!-+ 28.Nc4 Ra1 29.Ke2 b5 30.Nd2 Rh1 (30...d5 31.Nb3 Ra2 32.Kd1-+) 31.h3 d5 32.Kd3 (32.Nb3 Kd6-+) 32...c5 33.Kc2 Ra1 34.Nb3 Ra4 35.Kb1 Rb4 36.Kc2 Kd6 37.Nd4?? (better 37.Be2-+) 37...cd4 38.ed4 Rd4 39.Kc3 (39.g3 b4-+) 39...e5 (39...Rf4!? 40.Kd2-+) 40.Be2 Rf4 41.f3 b4 42.Kb3 Rd4 43.Ba6 (43.Kc2 Rc4 44.Kb2 Rc3-+) 43...f5 Black plans e4 44.Bc8 (44.Kc2 e4 45.Kb3 e3-+) 44...f4 45.Bf5 e4 46.fe4 de4 47.Bh7 (47.Bg4 Kc5 48.Kc2 e3-+) 47...Kd5 (47...e3 48.Bd3 Rd3 49.Kb4 e2 50.g4 e1Q 51.Kc4 Qb1 52.h4 Qb3) 48.Kc2 (48.Bf5-+) 48...Kc4 49.Bg8 Kc5 50.Bh7 Kd5 (better 50...b3 51.Kc3 e3 52.Bd3-+) 51.Bg8 (51.Bg6 Rd3-+) 51...Kc6 52.h4 (52.Bh7 e3 53.Bd3 b3 54.Kc3 Rd3 55.Kd3-+) 52...f3 (better 52...e3 53.Bc4 Rc4 54.Kd3-+) 53.gf3 ef3 (53...e3 54.Bc4 Rc4 55.Kd3 Rc3 56.Ke4 e2 57.Ke5 e1Q 58.Kf6 Qh4 59.Kg6 Qg3 60.Kf6 Rf3 61.Ke7 Qd6 62.Ke8 Rf8) 54.Be6 f2 55.Bh3 Rc4 56.Kd2 (56.Kb2 Rh4 57.Bf1 Rh1-+) 56...Rh4 (better 56...b3 57.Bf1 b2 58.Bc4-+) 57.Bg2 Kc5 58.Ke2 (58.Kc2 Rh1! 59.Kd3 b3-+) 58...Rf4 (58...b3 59.Kd2 Rc4-+) 59.Kf1 (59.Ke3 Rd4 60.Kf2-+) 59...b3 60.Bh3 Rh4 (60...b2 61.Ke2 b1Q 62.Ke3 Qc1 63.Kd3 Qd1 64.Kc3 Rf3 65.Kb2 Rb3 66.Ka2 Qb1) 61.Bf5 b2 62.Be4 Re4 63.Kf2 (63.Kg2 Rf4 64.Kg3 f1Q 65.Kh2 Qf2 66.Kh3 Rh4) 63...b1Q 64.Kf3 (64.Kg2 Qc2 65.Kf3 Qd3 66.Kf2 Re2 67.Kg1 Qd1) 64...Qd3 65.Kf2 Re2 66.Kf1 (66.Kg1 Qd1) 66…Qd1 0–1. BeepBeepImAJeep (2505) – KouheiTakai (2175), lichess.org, 2018.

4.c4 Bb7 5.e3 f6 6.d4 g5 7.c5 Bg7 8.h4 h6 9.Qc2 f5 10.hg5 hg5 11.Rh8 Bh8 12.f3 Qh7 13.Nc3 Qh2 14.Qf2 g4 15.Nge2 gf3 16.gf3 Qh7 17.0-0-0 a5 18.b5 Ne7 19.Bg2 Nd5? 20.Rh1+- Qg8 21.Nd5 Bd5 22.Nc3 bc5 23.Nd5 ed5 24.dc5 Bb2 25.Qb2 d4 26.Qd4 Qb3 27.Rh8 Kf7 28.Rh7 Ke8 29.Qe5 Qe6 30.Qe6 de6+- 31.f4 Ra7 32.b6 Ra6 33.bc7 (33.bc7 Rd6 34.cb8Q Rd8 35.Bc6 Kf8 36.Qd8) 1–0. carocan (1705) – xtom (1605), kurnik, 2011.

4.c4 Bb7 5.Nf3 Nc6 6.b5 Nb8 7.e3 Nf6 8.d4 g6 9.Be2 Bg7 10.0-0 0-0 11.Nbd2 c6 12.a4 a6 13.Ne5 ab5 14.ab5 Ra1 15.Qa1 cb5 16.cb5 d6 17.Nec4 Qc7 18.Rc1 Nbd7 19.Bf3 Bf3+= 20.gf3 d5 21.Ne5 Qd6? 22.Rc6?? Qe7?? 23.Ba3+- Ra8?? 24.Nb1 Qd8=+ 25.Qc3 Ne5 26.de5 Nd7 27.f4 f6 28.Bd6 fe5-/+ 29.Be5 Be5 30.fe5 Qg5 31.Kf1 Ne5 32.Rc8 Rc8 33.Qc8 Kg7 34.Nd2 Kh6 35.Qe6 Qh5 36.Ke1?? Nd3-+ 37.Kf1 Qh2 (37...Qh2 38.Ke2 Nf2-+) 0–1. bratek55 – dumnica (1630), kurnik, 2011.

4.g3 Bb7 5.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Qe7 5.a3).

5.d4 f5 6.Nf3 g5 7.Nbd2 g4 8.Ne5 Bg7 9.c4 Be5 (9...d6 10.Nd3=) 10.de5 Nc6 11.f4 (11.b5!? Na5 12.Rc1+/-) 11...gf3= 12.Nf3 0-0-0 (12...Nh6 13.Qd2=) 13.Qc2 h5 14.0-0-0 (14.c5!? bc5 15.b5+=) 14...Nh6= 15.b5 Nb8 16.Nd4 (16.Rd2!?=) 16...Ng4-/+ 17.Qe2 Rhg8 (17...h4 18.Nf3-/+) 18.Nb3 (better 18.Rd2=+) 18...Ne5 (better 18...h4 19.Rd3 Qg7-/+) 19.Be5+= Qa3 20.Kc2 (better 20.Qb2 Qb2 21.Kb2 Bg2 22.Rg1 Bf1 23.Rdf1+=) 20...Be4-/+ 21.Rd3 Bd3 (21...d5!? 22.Bb2 dc4 (22...Bd3?! 23.Qd3 Qa4 24.Kc1=+) 23.Ba3 cd3 24.Qd3 Bd3 (24...Rd3?! 25.Bd3 Rg2 26.Kc3=+) 25.Bd3 Rg2 26.Kc3 c5-+) 22.Qd3=+ d6 (22...a5 23.ba6 Na6 24.Kd1=+) 23.Bb2= Qb4 24.Qc3 Qc3 25.Bc3 Nd7 (better 25...a5=) 26.Be2 (better 26.g3+=) 26...Rg2-/+ 27.Kd3?? (better 27.Kd1-/+) 27...Rdg8 (better 27...Nc5 28.Kd2 Nb3 29.Ke1 Nc1-+) 28.Bf3 (28.Bh5 Rd8 29.Ba1 Ne5 30.Be5 de5 31.Kc3 Rh8-/+) 28...Rf2 (better 28...Ra2 29.Bh5 Rd8=+) 29.Be2? (29.Bh5 Rd8 30.Ba1=+) 29...Ne5 (better 29...h4-+) 30.Be5= de5 31.Re1?? (31.Bh5 Rh8 32.Bf7-/+) 31...e4 (31...Rh2!? 32.Kc3-+) 32.Kd4 Rgg2 (32...Rh2 33.c5 Kd7 34.Ke5-/+) 33.Nc1? (better 33.Bh5 Kd7 34.h4=+) 33...Rh2-+ 34.Ke5 Rhg2?? (34...Kb7 35.Bd1 Rh3 36.Nb3-+) 35.Ke6? (better 35.Bh5 Rg7 36.Ne2=) 35...h4-+ 36.Ke5? (36.Rh1 Rg3 37.Rh4-+) 36...h3 37.Bf1 Rg1 38.Bh3 Re1 39.Nd3 (39.Nb3 Re3 40.Bf5 Rf5 41.Kf5 Rb3 42.Ke4-+) 39...Rh2 (39...ed3 40.Bf5 Rf5 41.Kf5 d2 42.Kg5 d1Q 43.Kf5 Qf3 44.Ke5 Re3 45.Kd4 Qe4) 40.Bf5-/+ Kb7?? (better 40...Kb8 41.Ne1 Re2-/+) 41.Nb4?? (better 41.Be4 Kc8 42.Ne1+-) 41...Re3-+ 42.Nd5 (42.Be4 Kc8 43.Kf4 Ra3-+) 42...Rf3 (better 42...Re1!? 43.Be4 c5 44.Ne3 Kc7 45.Nf5-+) 43.Ne3 (43.Ne3 Re3 44.Be4 Kb8 45.Kd4-+). danishguy (2115) - r0610201 (2190), Rated Bullet game, lichess.org, 2020.

5.d4 f5 6.Nf3 g5 7.Nbd2 g4 8.Ng1 Bg7 9.Ne2 h5 10.c4 Nc6 (10...h4 11.Nf4 Rh6 12.Rg1=) 11.Nc3 (11.b5 Na5+=) 11...0-0-0 12.Qb3 (12.b5 Na5=) 12...Nf6 (12...h4 13.d5 Ne5 14.a4=) 13.0-0-0 (13.c5 h4=) 13...d5 (13...h4 14.b5 Na5 15.Qb4=+) 14.c5 Ne4 (14...bc5 15.bc5 e5 16.Qa4=+) 15.Nde4+= fe4 16.cb6 ab6 17.Kb1 h4 18.Na4 g3 19.hg3 hg3 20.Rh8 Rh8 21.fg3 Qg5 22.Rc1 Qg3 23.Ba6? (better 23.Nb6 Kd8 24.Nd5 ed5 25.Qd5 Qd6 26.Bc4+/-) 23...Bh6?? (23...Ba6 24.b5 Nd4 25.Nb6 Kd8 26.Bd4 Bd4 (26...cb6?? 27.Bg7 Qg7 28.ba6+-) 27.Nd5 ed5 28.ba6 c6=+ (28...Qe3?! 29.Qd5 Ke8 30.Rd1=)) 24.Bb7?? (better 24.Nb6 Kd8 25.Bb7+-) 24...Kb7-/+ 25.Rc6?? (better 25.Qc2 Ne7 26.Rh1-/+) 25...Kc6-+ 26.Qc3 Kb7 (26...Kb5 27.Bc1 Be3 28.Nc5 bc5 29.Qc5 Ka6 30.Be3-+) 27.b5 Be3 (27...Qe3?! 28.Qc6 Kb8 29.Nb6 Qe1 30.Ka2 cb6 31.Qb6 Ka8 32.Qa6 Kb8 33.Qb6 Ka8 34.Qa6 Kb8 35.Qb6=) 28.Qc6 Kb8 (better 28...Ka7 29.Qe6 Qg2-+) 29.Nb6= cb6 30.Qb6 Kc8 31.Qe6 Kd8 (better 31...Kb8!? 32.Qb6 Ka8 33.Qa6 Kb8 34.Qb6 Ka8 35.Qa6 Kb8 36.Qb6=) 32.Qf6+/- Kd7 33.Qh8 Qe1? (better 33...Bf2 34.Qh7 Kd6 35.Qh6 Ke7+/-) 34.Ka2+- Qd2 (34...Qg3+-) 35.Qg7 Ke6 (35...Kd8 36.b6 Bf4 37.Qf7+-) 36.Qg8 (36.Qe5 Kd7 37.Qd5 Kc8 38.Qe4 Kc7+-) 36...Kf5 (36...Ke7 37.Qd5 Qg2 38.b6+-) 37.Qf7 (better 37.Qd5 Kf6 38.Qe4+-) 37...Kg4 38.Qd5 Qg2 39.b6 Bc1 (39...Bf4 40.b7+-) 40.Qb5 (40.Qg8!? Bg5 41.b7 Qg3+-) 40...Qb2 (40...Bf4 41.b7 Qh2+-) 41.Qb2 Bb2 42.Kb2 (better 42.b7 Bd4 43.b8Q+-) 42...e3 43.b7 e2 44.b8Q e1Q 45.Qg8 Kh3 46.Qh7 Kg4 47.Qg6 Kh4 48.Qf6 Kg4 49.Qe5?? (better 49.Qd6+-) 49...Kh4?? (better 49...Qe5 50.de5 Kf5=) 50.Qe1+- (50.Qe1 Kg5 51.Qe4 Kf6 52.d5 Kf7 53.Qe6 Kf8 54.d6 Kg7 55.d7 Kh7 56.d8Q Kg7 57.Qdg8) 1-0. danishguy (2125) - r0610201 (2205), Rated Bullet game, lichess.org, 2020.

5.Nf3 h5 6.c4 (6.Nc3 Nf6+=) 6...h4 (6...Nf6 7.Nc3+=) 7.h3 (better 7.Nc3+=) 7...e5? (better 7...Nf6!?+=) 8.Be5+- d6 9.Bf4 Nd7 10.Nc3 0-0-0 (10...Ngf6 11.Be2+-) 11.Qa4 Kb8 12.c5! dc5?? (12...bc5 13.bc5 Combination; 12...dc5 13.Nb5 Combination) 13.Nb5 a6 (13...Qf6 14.d4 Ne7 15.bc5 a6 16.Nc7 Kc8 17.cb6 Nc5+-) 14.Nc7 Ka7 (14...Qe4 15.Ne6 Kc8+-) 15.Ba6 b5 16.Nb5 Kb6 (16...Ka8 17.Nc7 Kb8 18.Qb5 Nb6 19.Qb6 Qe3 20.Be3 Kc8 21.Bb7 Kd7 22.Ne5 Ke7 23.Bc5 Rd6 24.Qd6) 17.Qa5 Kc6 18.Nfd4! cd4 (18...cd4 19.Nd4 Mate attack) 19.Nd4 1–0. Pierre – Mirrimond, internet, 2020.

5.f4 f6 6.Nf3 g5 7.fg5 Bg7 8.gf6 Nf6 9.Be2 h5 10.b5 h4 11.c4 a6 12.a4 Ne4 13.Bg7 Qg7 14.Na3 Qg2 15.Rf1 Rf8 16.Nc2 Ng5 17.Ng5 Rf1 18.Bf1 Qg5 19.Qe2 d5 20.Nd4 Nd7 21.Ne6 Qe5 22.Nc7 Qc7 23.Qh5= Kd8 24.Qh4 Kc8 25.cd5 Bd5 26.Bh3 Kb7 27.Qg3?? Qg3 28.hg3=+ Ne5 29.ba6 Ra6 0–1. devo1 – xtom, kurnik, 2011.

5.d3 Nc6 6.e4 0-0-0 7.c4 f6 8.Be2 h5 9.Nc3 g5 10.Qa4 Bg7 11.0-0-0 f5 12.ef5 ef5 13.Rhe1 Qf7?? 14.Nd5?? g4=+ 15.Ng1 Bb2 16.Kb2 a6 17.f3 Nf6 18.Nc3 Rhe8 19.b5 ab5 20.Nb5 Qg7 21.Ka2 Ng8 22.d4= Nge7?? 23.d5+- Ne5 24.fg4?? fg4? 25.d6+- cd6 26.Nd6 Kb8 27.Ne8 Re8 28.Bd3 Nd3? 29.Rd3+- Qg6 30.Rde3 Bc6 31.Qb4 Qc2 32.Ka1 Kc7 33.Qc3 Qh7?? 34.Qe5 Kb7 35.Qf6 Ng8+/– 36.Qd6 Re3 37.Re3 Qg7 (37...Qg7 38.Ka2 Qf7+/–) 1–0. bratek55 (1630) – dumnica, kurnik, 2011.

5.g3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Qe7 5.a3).

5.g3 Nf6 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Qe7).

7.Nb5 Na6+= A) 8.Bd3 Bg7 9.0-0 0-0 10.Qe2 c5 11.Be5 Ne4 12.Be4 Be4 13.Bd6 Qd8; B) 8.Bc4 Bg7 9.0-0 0-0 10.Qe2 c6 11.Nc3 Nc7 12.Ne5 Nfd5 13.f4 a5; C) 8.Be5 d6 (8...Bg7 9.Bc7 Ne4 10.Bd3 0-0 11.Be4 Nc7 12.Bb7 Nb5 13.Ba8 Ba1) 9.Bf6 Qf6 10.c3 Be7 11.Nd6 Bd6 12.Ba6 Be4 13.Qe2 0-0; D) 8.g4 Bg7 (8...h6 9.Bg2 Bg7 10.0-0 0-0 11.Ne5 Bg2 12.Kg2 h5 13.h3 c6; 8...Rg8 9.Rg1 Ne4 10.Bd3 Bg7 11.Bg7 Rg7 12.Be4 Be4 13.g5 f5) 9.g5 Nh5 10.Bg7 Ng7 11.Rg1 h6 12.gh6 Rh6 13.Bd3 Qf6.

7.Nb5 d6?? 8.Bf6+- Qf6 9.Nc7 Kd8 10.Na8 Bg7 11.d4 Ba8 12.Bd3 Ke7 13.a4 Rc8 (13...Bf3 14.Qf3 Qf3 15.gf3+-) 14.a5 Nd7 (14...Bf3 15.Qf3 Qf3 16.gf3+-) 15.ab6 Nb6 (15...ab6 16.Ra7 Bc6 17.0-0+-) 16.Ra7 Kf8 17.h4 h5 (17...Qd8+-) 18.Ng5 Bg2 (18...Kg8 19.Rf7 Qf7 20.Nf7 Kf7+-) 19.Nh7 Kg8 20.Nf6 Bf6 21.Rg1 (better is 21.Bg6 Kf8 22.Qh5 Rc7 23.Rc7 Ke8 24.Qb5 Bc6 25.Qc6 Kd8 26.Qd6 Nd7 27.Qd7) 21...Bh3 22.Bg6! fg6 (22...fg6 23.Rg6 Mate attack) 23.Rg6 Kh8 (23...Kf8 24.Rf6 Kg8 25.Qh5 Bf5 26.Qf7 Kh8 27.Qg7) 24.Qh5 1–0. Anonymous – tdzf, internet, 2011.

7.Bc4 Nc6 A) 8.d4 d5 9.Bd3 a6 10.0-0 Bg7 11.Re1 0-0 12.Qd2 Rfd8 13.Qe2 Ne8; B) 8.g4 Bg7 (8...h6 9.Rg1 Bg7 10.Bd3 0-0-0 11.Na4 Kb8 12.Bc3 Qf8 13.b5 Ne7) 9.g5 Nh5 10.Rb1 a5 11.Nb5 d5 12.Bg7 Ng7 13.Bd3 ab4; C) 8.0-0 Bg7 (8...a6 9.b5 ab5 10.Nb5 Rc8 11.Ne5 Bg7 12.Nc6 dc6 13.Qf3 0-0) 9.d4 d5 10.Bd3 0-0 11.Qd2 a6 12.h3 e5 13.de5 Ne5; D) 8.h3 Bg7 (8...Bh6 9.0-0 0-0 10.e4 Bf4 11.g3 Bd6 12.d4 e5 13.Nd5 Nd5; 8...a6 9.0-0 Bg7 10.d4 d5 11.Bd3 0-0 12.Re1 Rfd8 13.Qe2 e5) 9.0-0 0-0 10.d4 a6 11.Bd3 Rfe8 12.Qd2 d5 13.Rfe1 e5; E) 8.Qe2 a6 (8...Bg7 9.e4 0-0 10.0-0 a6 11.h3 Nh5 12.Qe3 Qd6 13.Rfe1 b5) 9.0-0 Bg7 10.e4 0-0 11.h3 Nh5 12.Qe3 Qd6 13.Rfe1 b5; F) 8.e4 Bg7 (8...a6 9.0-0 b5 10.Be2 Bg7 11.d4 0-0 12.Qd3 Rfe8 13.e5 Nd5) 9.Qe2 0-0 10.0-0 a6 11.h3 Nh5 12.Qe3 Qd6 13.Rfe1 b5; G) 8.Bb3 Bg7 (8...a6 9.e4 Bg7 10.d4 d5 11.e5 Ng4 12.0-0 0-0 13.Bc1 Qd7; 8...d6 9.d4 Bg7 10.0-0 d5 11.b5 Na5 12.a4 Qb4 13.Ne2 Nc4; 8...0-0-0 9.0-0 Bg7 10.d4 d5 11.b5 Na5 12.a4 Qb4 13.Ne2 Qe7) 9.0-0 0-0 10.d4 d5 11.Qd3 a6 12.Rae1 Rfd8 13.e4 de4; H) 8.Nb5 Rc8 (8...d5 9.Nc7 Kd8 10.Na8 dc4 11.0-0 Ba8 12.Qe2 Bb7 13.Qc4 Bg7; 8...0-0-0 9.0-0 Bg7 10.Nbd4 Nd4 11.Bd4 d6 12.b5 e5 13.Bb2 Ne4) 9.g4 h6 10.Rg1 Bg7 11.h4 d5 12.Bd3 0-0 13.g5 hg5.

7.Bc4 Bg7 A) 8.b5 d5 (8...0-0 9.a4 Ne4 10.0-0 d5 11.Ba3 Nd6 12.Bd3 Nd7 13.Nd4 Ne5) 9.Bb3 0-0 10.0-0 Nbd7 11.a4 Ne4 12.d4 Nd6 13.h3 a6; B) 8.Bb3 0-0 (8...Nc6 9.0-0 0-0 10.d4 d5 11.Qd3 a6 12.Rfe1 Qd6 13.h3 e5; 8...d5 9.0-0 0-0 10.Qe2 Nbd7 11.h4 c5 12.Ng5 a5 13.bc5 Nc5; 8...a5 9.b5 0-0 10.0-0 d5 11.a4 Ne4 12.d4 Nd6 13.Qd3 Nd7; 8...d6 9.0-0 0-0 10.Qe2 a5 11.h3 Nc6 12.b5 Ne5 13.Nd4 Nh5; 8...a6 9.0-0 Nc6 10.h3 0-0 11.d4 d5 12.Re1 Rfd8 13.Qd3 e5) 9.0-0 d5 10.h3 Nbd7 11.Qe2 c5 12.d3 cb4 13.ab4 Qb4; C) 8.d4 a5 (8...d5 9.Bd3 0-0 10.0-0 a5 11.b5 Nbd7 12.h3 Ne4 13.a4 Rfe8; 8...0-0 9.0-0 d5 10.Bd3 Nbd7 11.Qe2 c5 12.bc5 bc5 13.Bb5 a6) 9.0-0 ab4 10.ab4 Qb4 11.Ra8 Ba8 12.Bb3 Bb7 13.Ne5 Nc6; D) 8.Bd3 0-0 (8...Nc6 9.0-0 0-0 10.b5 Na5 11.Qe2 Ng4 12.a4 Qd6 13.g3 Nb3; 8...d5 9.h4 0-0 10.0-0 e5 11.Ng5 h6 12.Nh3 a5 13.b5 Nbd7; 8...a6 9.0-0 0-0 10.Qe2 Nc6 11.h3 d5 12.Nd4 Nd8 13.Nf3 e5; 8...d6 9.Bb5 c6 10.Bd3 0-0 11.0-0 Nbd7 12.Qe2 d5 13.e4 Ne4) 9.0-0 e5 10.Ng5 e4 11.Be2 Nc6 12.d4 a5 13.b5 Nd8; E) 8.Qe2 0-0 (8...d5 9.Bb5 Nbd7 10.Ba6 Ba6 11.Qa6 0-0 12.Nb5 Ne4 13.Bg7 Kg7; 8...a6 9.0-0 0-0 10.Ng5 d5 11.Bb3 Nc6 12.d4 Ne8 13.Nh3 Nd6) 9.0-0 d5 10.Bd3 e5 11.e4 d4 12.Nd5 Nd5 13.ed5 Bd5; F) 8.Ng5 Nc6 (8...0-0 9.Nb5 d5 10.Bd3 a6 11.Nc3 h6 12.Nf3 e5 13.Nh4 e4; 8...h6 9.Nf3 Nc6 10.d4 d5 11.Bd3 0-0 12.0-0 a6 13.Qd2 e5; 8...d5 9.Bb3 0-0 10.0-0 Nbd7 11.d4 c5 12.Qd2 cd4 13.ed4 Rfe8; 8...Bg2 9.Rg1 Bb7 10.Nb5 d6 11.Be2 Nc6 12.Bf3 0-0 13.Ne4 Ne4; 8...Nh5 9.h4 Nc6 10.d4 Nf6 11.0-0 d5 12.Bd3 0-0 13.Re1 a6; 8...a5 9.Nb5 d5 10.Bd3 0-0 11.ba5 Ra5 12.0-0 h6 13.Nf3 Nc6) 9.d4 d5 10.Bd3 Rd8 11.0-0 0-0 12.Nf3 Ne4 13.Rb1 Nd6; G) 8.h3 0-0 (8...d5 9.Bd3 0-0 10.0-0 e5 11.Be2 a5 12.b5 Nbd7 13.a4 Rfe8; 8...Nc6 9.0-0 0-0 10.d4 d5 11.Bd3 Qd6 12.Qd2 Rfe8 13.b5 Na5; 8...a6 9.d4 0-0 10.0-0 d5 11.Bd3 Nbd7 12.Qe2 a5 13.b5 e5; 8...a5 9.b5 d5 10.Be2 0-0 11.0-0 Nbd7 12.a4 Ne4 13.Nd4 Nd6) 9.0-0 d5 10.Bb3 Nbd7 11.Qe2 a5 12.b5 Nc5 13.Ne5 Nfd7; H) 8.0-0 0-0 (8...Nc6 9.d4 d5 10.Bd3 0-0 11.h3 Rad8 12.Re1 Rfe8 13.Rb1 a6; 8...d5 9.Bb5 Nbd7 10.Bd7 Qd7 11.Ne5 Qe7 12.f4 0-0 13.Qf3 a5; 8...a6 9.Qe2 0-0 10.Ne5 d6 11.Nd3 d5 12.Bb3 Nc6 13.f3 Ne8) 9.Qe2 Nc6 10.e4 d5 11.ed5 ed5 12.Qe7 Ne7 13.Bb5 Nf5.

7.Bd3 A) 7...Nc6 8.Nb5 Rc8 (8...0-0-0 9.0-0 Bg7 10.c4 e5 11.Nc3 Qd6 12.Qe2 Kb8 13.Ng5 Qe7) 9.0-0 Bg7 10.Ne5 Ne5 11.Be5 d6 12.Bb2 c6 13.Nc3 0-0; B) 7...Bg7 B1) 8.Nb5 d6 9.0-0 0-0 10.Qe2 Nc6 11.e4 a5 12.Bc3 Ng4 13.Nfd4 Nd4; B2) 8.0-0 Nc6 (8...0-0 9.Qe2 d6 10.Ng5 h6 11.Nf3 a5 12.Rfd1 Nc6 13.b5 Ne5; 8...d5 9.Ne5 0-0 10.Nb5 Nc6 11.Qe2 a6 12.Nc6 Bc6 13.Nd4 Bb7) 9.b5 Na5 10.Qe2 0-0 11.h3 e5 12.e4 Nh5 13.g3 Nf6; B3) 8.h4 0-0 (8...Nc6 9.Nb5 Rc8 10.0-0 0-0 11.Qe2 e5 12.e4 a6 13.Nc3 Nd4) 9.h5 Nh5 10.g4 Nf6 11.g5 Nh5 12.Rb1 d5 13.Nb5 e5; B4) 8.Qe2 0-0 (8...a6 9.h3 Nc6 10.0-0 0-0 11.e4 Nh5 12.Qe3 a5 13.b5 Ne5; 8...d5 9.h4 0-0 10.0-0 Nbd7 11.Rab1 c5 12.Ba6 Ba6 13.Qa6 Ng4; 8...Nc6 9.b5 Na5 10.0-0 0-0 11.h3 e5 12.e4 Nh5 13.g3 Nf6) 9.0-0 d6 10.h3 a5 11.Nb5 Nc6 12.Bc3 e5 13.Bc4 d5; B5) 8.b5 d6 (8...0-0 9.a4 d6 10.a5 Nbd7 11.a6 Bf3 12.Qf3 Ne5 13.Qf4 Nd3; 8...a5 9.0-0 0-0 10.Qe2 d5 11.a4 Nbd7 12.Nd4 Nc5 13.f4 Rad8; 8...d5 9.a4 Nbd7 10.0-0 0-0 11.a5 ba5 12.Ra5 Nc5 13.Ne5 Qd6) 9.0-0 0-0 10.Qe2 Nbd7 11.Nd4 Nc5 12.f4 e5 13.Nc6 Qe8.

7.g4 A) 7...h6 A1) 8.b5 Bg7 (8...d5 9.h4 Nbd7 10.Bh3 Bg7 11.Qe2 e5 12.g5 hg5 13.hg5 Ne4; 8...d6 9.Rg1 Bg7 10.h4 Nbd7 11.Nd4 Nh7 12.Nf3 Ne5 13.Be2 0-0; 8...a6 9.Rg1 Bg7 10.h4 ab5 11.Nb5 Na6 12.g5 hg5 13.hg5 Nh5; 8...e5 9.h3 Bg7 10.a4 e4 11.Nd4 0-0 12.a5 c5 13.Nb3 d5) 9.Rg1 d5 10.a4 Nbd7 11.a5 ba5 12.Ra5 Nc5 13.Qa1 0-0; A2) 8.h4 Nc6 (8...Bg7 9.Nb5 Na6 10.Rg1 c6 11.Nc3 c5 12.b5 Nc7 13.h5 Ne4) 9.Rg1 Bg7 10.h5 gh5 11.gh5 Nh5 12.b5 Na5 13.Nh2 Qh4; A3) 8.Bd3 Bg7 (8...Nc6 9.Rg1 Bg7 10.b5 Na5 11.a4 e5 12.Ba3 d6 13.Be2 Qd7) 9.Rg1 Nc6 10.h4 0-0-0 11.b5 Na5 12.Na4 Kb8 13.Bc3 Rhg8; A4) 8.Bg2 Bg7 (8...a6 9.Qe2 Bg7 10.0-0 Nc6 11.Ne5 0-0 12.f4 d5 13.Nd3 Rad8) 9.Nb5 d6 10.Qe2 a6 11.Nc3 0-0 12.h3 d5 13.0-0 e5; A5) 8.Nb5 Na6 9.Bd3 Bg7 10.Rg1 c6 11.Nc3 c5 12.b5 Nc7 13.h4 e5; B) 7...Bg7 8.Nb5 Na6 9.g5 Nh5 10.Bg7 Ng7 11.Rg1 h6 12.h4 hg5 13.hg5 e5.

4.e3 b6 5.Nf3 Bb7 (--> 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Qe7).

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 7.0-0 d5 (7...d6 8.d4+=) 8.c4 (8.d4 Nbd7+=) 8...c5 (8...a5 9.b5+=) 9.d4 (9.cd5 ed5 10.bc5 Qc5+=) 9...cd4 (9...cb4 10.ab4 dc4 11.b5+=) 10.Bd4 Nc6? (better is 10...Rd8!?+=) 11.Bc5+- Qe8 12.Bf8 Qf8 13.Qb3 (13.cd5 Nd5 14.Ra2 a6+-) 13...Bd7 (13...a6 14.Nbd2+-) 14.Nbd2 Nd8 (14...Rd8 15.Rac1+-) 15.Rad1 (15.Rfd1 a5+-) 15...a5 16.b5 b6 (16...a4 17.Qa2+-) 17.e4 dc4 (17...de4 18.Ng5+-) 18.Nc4 Be8 (18...a4 19.Qb2 Ne4+-) 19.Nb6 Rb8 20.Qc2 (20.e5 Ne4 21.Qe3 Nc5+-) 20...Bb5 21.Bb5 Rb6 22.Qc7 Rb5 (22...Nd5 23.Rd5 (23.ed5?! Rb5 24.d6 Rb7+-) 23...Rb7 24.Qd8 (worse is 24.Rd8 Rc7 25.Rfd1 Bb2+-) 24...ed5 25.Qd5+-) 23.Rd8 (23.Qd8?! Ne4 24.Qc7 Rc5+=) 23...Ne8 (23...Ne4 24.Rf8 Bf8+-) 24.Qd7 Qa3 (24...Rb7 25.Qb7 Bf6+-) 25.Qb5 Bf8 26.Re8 (26.Qe8 Kg7 27.Rd7 Qe7 28.Re7 Be7 29.Qe7 e5 30.Ng5 Kh6 31.Nf7 Kg7 32.Ng5 Kh6 33.Ne6 a4 34.Qg5) 26...Kg7 27.Qe5 Kg8 28.Rd1 a4 (28...f6 29.Qe6 Kg7 30.Rd7 Qe7 31.Ree7 Be7 32.Qe7 Kh6 33.Qh7) 29.Qf6 Qb3 (29...Qb4 30.Ng5 Qe7 31.Re7 Be7 32.Qf7 Kh8 33.Qh7) 30.Rf8! Kf8 Decoy to f8 31.Rd8 1–0. Schellen,Anton – Willoughby,Peter, FICGS, 2006.

4.Nf3 Ng4 5.h3 (5.e4 d5 6.Nc3 c5+=) 5...Nh6 (5...Nf6 6.e3=) 6.e3 (6.e4 d5 7.Nc3 a5+=) 6...Rg8 (6...c6 7.Bd3+=) 7.d4 (7.Bd3 f5+=) 7...Nf5 8.Bd3 Nh4 (8...d5 9.Nc3+-) 9.0-0 h6 (9...Nf3 10.Qf3 Qh4 11.Nd2+-) 10.Nbd2 d6 (10...d5 11.e4+-) 11.Nh4 (11.c4 Nf3 12.Nf3 g5+-) 11...Qh4 12.Nf3 (12.c4 Be7+-) 12...Qe7 13.c4 b6 (13...g5 14.Nh2+-) 14.Bh7 (14.Re1 c6+-) 14...Rh8 15.Be4 d5 (15...c6 16.Qa4 Bd7 17.Qb3+-) 16.cd5 ed5 (16...Bb7!?+-) 17.Bd5+- c6 18.Bb3 (better 18.Qc2 Bb7 19.Be4+-) 18...Rg8?? (18...Nd7+-) 19.Ne5 Be6 (19...f6 20.Qh5 g6 21.Ng6+-) 20.d5 cd5 (20...f6 21.Ng6 Qd6 22.de6 Qd1 23.Rfd1+-) 21.Bd5 Bd5 (21...Nd7 22.Ba8 Ne5 23.Be5+-) 22.Qd5 (22.Qd5 Qe6 23.Qa8+-) 1–0. DEFFM – GuestGBTH, freechess.org, 2020.

4.Ba3 Qb5 5.Bf8 Kf8 6.e3 Qb2 7.Nc3 Nc6 8.Nb5 Qe5 (better 8...Nb4!? 9.Rc1 c6=+) 9.Nf3+= Qf6 10.Nc7 Rb8 11.Nb5 a6 12.Nd6 Qe7 13.Nc8 Rc8 14.Bd3 Nf6 15.0-0 g6 16.Rb1 b5 (16...d5 17.Qe2=) 17.a3 (17.a4 ba4 18.Ba6 Ra8=) 17...Kg7 18.Nd4 (18.c4 Qa3 19.Rb3 Qd6 20.cb5 Na5=) 18...Rhf8 (better 18...Nd4 19.ed4 Qa3-/+) 19.c4?? (better 19.a4 Nd4 20.ed4 ba4 21.Ra1=) 19...Nd4-+ 20.ed4 bc4 21.Be2 Qa3 22.Ra1 Qd6 23.Qa4 Qd4 24.Qa6 (24.d3 d5-+) 24...Ne4 (better 24...d5-+) 25.Rfd1 (25.Qa7 Qa7 26.Ra7 Nd2 27.Rd1-+) 25...Qf2 (25...Nf2 26.Qa7 Rc5 27.h3 Nd1 28.Kh2-+) 26.Kh1 Qe2 27.Qb7 (27.Rf1 Qd2 28.Qb6-+) 27...Nf2 28.Kg1 Nd1 29.Rd1 Qd1 30.Kf2 Qd2 31.Kg3 c3 32.Qc8 Rc8 (32...Rc8 33.h3 c2 34.h4 Rc3 35.Kh2 Qf4 36.g3 Qg3 37.Kh1 c1Q) 0–1. aravind555 – tb, lichess.org, 2018.

4.Bc3 Qb5 5.e3 Qc5 6.Bd4 Qd6 7.Nc3 c5 8.Ne4?? (8.Nb5 Qb6 9.Be5 d6 10.Nd6 Bd6 11.Bg7 Be5 12.Be5 f6+-) 8...Qb6?? (8...Qc6 9.Nc5 Bc5 10.Bg7+-) 9.Rb1?? (better is 9.Nc5 Qc7 10.Nd3+=) 9...Qc6-+ 10.Be5? (10.Nc5 Bc5 11.Bg7+-) 10...Qe4 11.Nf3 f6 12.Bd3 Qd5 13.c4 (13.e4 Qc6 14.Bg3-+) 13...Qd3 (13...Qd3 14.Bb8 Rb8-+) 0–1. shadowman – como2, caissa.com, 2007.

4.a4 Bb7 5.e3 a6 6.ba6 Ba6 7.Ba6 Ra6 8.Nf3 Nf6 9.0-0 g6 10.Nc3 Bg7 11.Nb5 d6 12.d4 0-0 13.h3 c6 14.Nc3 Nbd7 15.Re1 e5 16.de5 de5 17.Ne2 e4 18.Nfd4 c5 19.Nb5 Ne5 20.Be5 Qe5 21.Ng3 Nd5 22.Ra2 Nb4 23.Ra1? Raa8?? 24.c3 Nd3 25.Re2 Rad8 26.Qb3 h5 27.Qc4 h4 28.Ne4+/– Nf2?? 29.Nf2 Qf5 30.Qh4 Bf6 31.Qf4 Qe6 32.Ng4 Bg7 33.Rf1 Rde8 34.Nf6 Bf6 35.Qf6 Qc4 36.Ref2 Qa4 37.Nd6 Re6 38.Qe6! fe6 39.Rf8 Kg7 40.R1f7 Kh6 41.Rh8 Kg5 42.Rfh7 Qd1= 43.Kh2 Qd6-/+ 44.Kg1 b5 45.h4 Kg4 46.Rg8 e5 47.Rh6+/– Qd1 48.Kh2 Kf5 49.Rgg6 Ke4 50.Re6 Qg4 51.g3?? Qe2-+ 52.Kh3 Qf1 53.Kg4?? Qf3 54.Kg5?? Qg3 55.Kf6-/+ Qf3 56.Ke7 Qe3 57.Kd6?? Qd3?? 58.Kc5= Qc3 59.Kb5 Qd3 60.Kb6 Qb3 61.Kc6 Qc3 62.Kd6 Qd3 63.Ke7 Kd5?? 64.Rd6+- (64.Rd6 Ke4 65.Rd3 Kd3 66.h5+-) 1–0. wojtekkk (1680) – dumnica, kurnik, 2011.

4.a4 Bb7 5.e3 h6 6.Nf3 a5 7.Bd3 Nf6 8.0-0 g6 9.Qe2 (9.e4 Bg7+=) 9...Bg7 10.Na3 Nh5 11.Bg7 Ng7 12.e4 d6 13.e5 d5 14.c4 Nd7 15.cd5 Bd5 16.Nc2 (16.Be4 0-0+/–) 16...Nc5 (16...Bf3!? 17.Qf3 Rd8=) 17.Bc4+/– Bc4 18.Qc4 Rd8 19.d4 Ne4?? (better is 19...Nd7+-) 20.Qc6 Qd7 21.Qe4 0-0 (21...Nf5 22.Kh1+-) 22.Ne3 f5 (22...h5 23.Qf4 Kh7 24.Ng5 Kg8 25.Rfd1+-) 23.ef6! Rf6 24.Ng4 Rff8 (24...Rf3 25.Qf3 Qe7 26.Ne5+-) 25.Qg6 Qe7 (25...Qe8 26.Nf6 Rf6 27.Qf6 Rd6+-) 26.Nh6 Kh8 27.Ng5 Nf5 28.Nhf7 Rf7 29.Nf7 Qf7 30.Qf7 Rd4 31.Ra3 Rh4 (31...Rd3 32.Rd3 Nh6 33.Rd8 Ng8 34.Rg8) 32.Rd1 Rh7 (32...Nd6 33.Rd6! cd6 34.Rg3 Rg4 35.Rg4 d5 36.Rh4) 33.Rd8 1–0. Janek – arabica, internet, 2016.

4.e3 Qb4 5.Qc1 Bc5?? 6.a4 a6?? 7.Nf3 ab5?? 8.ab5 Ra1+= 9.Ba1 Qg4 10.Nc3 Ne7 11.Ne5 Qg5 12.Nf3 Qg6 13.Nh4 Qh6 14.g3 0-0 15.Ne4 Ng6 16.Ng6 Qg6 17.Bg2 Bb7 18.d3 d5 19.Nc5 bc5 20.0-0 Nd7 21.Qb2 e5 22.f4 f6 23.f5 Qg5= 24.e4 Qe3 25.Kh1 de4 26.de4 Be4-/+ 27.Be4 Qe4 28.Kg1 Nb6 29.Qb3 Kh8 30.Qd3 Qg4 31.Qf3 Qb4 32.Qd3 Nc4 33.Qd7 Ne3 34.Rc1 Qe4 35.Qc6 Qf5?? 36.Bc3?? c4 37.Be1?? Qf1 0–1. ventil (1610) – dumnica, kurnik, 2011.

4.e3 Bb7 5.Nf3 Nf6 6.Be2 d6 7.a4 Nbd7 8.Nc3 0-0-0 9.a5 Nc5 10.ab6 ab6 11.Ra7 Kd7? 12.Nd4 Bg2+/– 13.Nc6 Bc6 14.bc6 Kc6?? 15.Bb5 1–0. ventil (1715) – dumnica, kurnik, 2011.

4.e3 Bb7 5.Qg4 Nf6 6.Qg3 d6 7.Nf3 Nh5 (7...Ne4 8.Qh3+=) 8.Qg4 (8.Qh3 Nf6+=) 8...Nf6= 9.Qh4 Nbd7 10.Be2 (10.Nc3 Nc5+=) 10...e5 (10...Nd5 11.Qg3+=) 11.Qc4 (11.Nc3 0-0-0+=) 11...Nc5= 12.d4 (12.0-0 Qe6=) 12...Bd5 (better is 12...d5 13.Qc3 Na4+=) 13.Qb4+= Ncd7 (13...e4 14.Nfd2 Ncd7 15.Nc3+=) 14.0-0+/– h6 (14...Bb7 15.de5 de5 16.Qe7 Ke7 17.Nbd2+/–) 15.de5 (15.Nc3 Bb7+/–) 15...Ne5 16.Ne5 de5 17.Qe7 Be7 18.Be5 Bd6 19.Bd6 cd6 20.Rd1 0-0? (better is 20...Rc8!? 21.Bd3 Ke7+/–) 21.c4+- Bb7 22.Rd6 Ne4 23.Rd7 Nc5 24.Rd4 a6 25.Nc3 (better is 25.Nd2+-) 25...a5?? (better is 25...ab5 26.Rdd1 bc4 27.Bc4 Rfd8+/–) 26.Rad1 (26.Rd6 f5 27.Rb6 f4+-) 26...Ne6 (26...Rab8+-) 27.Rd6 Rad8 28.Rb6 Rb8 29.Nd5 Kh8 (29...Rfe8 30.Rd6+-) 30.Ne7 Rfd8 (30...Nc5 31.Nc6 Rbe8+-) 31.Rd8 Nd8 (31...Rd8 32.Rb7 Rd2 33.Bf1 Ra2 34.b6+-) 32.Bf3 Kh7 (32...g6 33.c5 Kg7 34.c6 Bc6 35.Rb8 (35.bc6 Rb6 36.h4 Rb1 37.Kh2 Rc1-/+; worse is 35.Rc6 Nc6 36.Bc6 Kf6 37.Nd5 Ke5+-) 35...Bb5 36.Rb5+-) 33.c5 Ne6 34.Rb7 (better is 34.c6!? Bc6 35.Rb8 Bf3 36.gf3 Nc5+-) 34...Rb7 35.Bb7 Nc5 36.Bc6 Na4 37.Be8 g6 (37...f6 38.Bg6 Kh8 39.Nc6+-) 38.Nc6 (better is 38.Bf7!? g5+-) 38...Kg7 39.Na5 Kf8 40.Bc6 Ke7 (40...Nb6 41.Kf1+-) 41.Nc4 Kd8 (41...Nc5 42.b6 f6 43.a4+-) 42.b6 Nb6 43.Nb6 Kc7 44.Be8 Kb6 45.Bf7 g5 (45...Kc5 46.Bg6 Kd5 47.f4+-) 46.e4 Kc6 47.e5 Kd7 48.a4 Ke7 49.e6 (49.e6+-) 1–0. Leon Manas,JF (1715) – Rodriguez Brito,GA, Torneo de Ajedrez Dia Universa, 2009.

4.e3 d5 5.Nf3 f5 6.d4 Nf6 7.Bd3 g6 8.Nbd2 Bg7 9.0-0 0-0 10.h3 Nbd7 11.Re1 e5 12.de5 Ne5 13.Ne5 Qe5 14.Nf3 Qe7 15.Qc2 Ne4 16.Be4 (better is 16.Rab1!?=) 16...fe4-/+ 17.Nd2? (17.Nd4 Be5-/+) 17...Be6 (better is 17...Qg5!? 18.Nf1-+) 18.Nf1 a5 19.ba5 Ra5 20.Ng3 Rfa8 21.Red1 (21.a4 b5 22.ab5 cb5-/+) 21...b5 22.a3 c5 23.Qd2 d4?? (better is 23...Ra4-/+) 24.cd4 (worse is 24.Ne4 Bb3 25.f3 Bd1 26.Rd1 de3 27.Qe3 c4-/+) 24...cd4 25.Bd4 (worse is 25.Ne4 Bc4 26.Ng3 de3 27.fe3 Bb2 28.Qb2 Qe3 29.Kh2 Qe7+=) 25...Bd4 26.ed4 Bc4 27.d5 (27.Re1 Ra3 28.Ra3 Ra3 29.Ne4 Bd5+/–) 27...Ra3 28.Ra3 Ra3 29.Kh2?? (29.d6 Qh4 30.Qd4 Rd3 31.Rd3 Bd3 32.Qd5 Kg7 33.Qb7 Kf8 34.Qb8 Kf7+-) 29...Rg3?? (better is 29...Rd3 30.Qe1 Qd6-/+) 30.fg3 b4? (better is 30...e3 31.d6 ed2 32.de7 Kf7+/–) 31.Qb2 b3 32.Rb1?? (better is 32.Qc3 Bd3 33.Qb3+-) 32...Qd6 (better is 32...Bd5 33.Qd4 Bf7+=) 33.Qb3?? (33.Ra1 Bd5 34.Ra7+-) 33...Bb3-+ 34.Rb3 h5 35.Rd3 (35.Rb2-+) 35...ed3 (35...ed3 36.Kg1 d2 37.Kf2 d1Q 38.Ke3 Qg3 39.Ke4 Qdd3) 0–1. Fournier,Frederic – frank001, Active Blind, 2008.

4.e3 d5 5.Nf3 Nf6 6.d4 g6 7.Bd3 Bg7 8.Nbd2 0-0 9.0-0 Re8 10.a3 Nbd7 11.Re1 b5 12.e4 Qd8 13.ed5 ed5 14.Re8 Qe8 15.Qf1 Qd8 16.Re1 Qc7 17.Qe2 Bb7 18.Qd1 Re8 19.Re8 Ne8 20.Qe2 Nef6 21.Nf1 Qc8 22.Ne3 Qe8 23.h3 Bh6 24.Nc2 Qe2 25.Be2 Kg7 26.Ne3 Be3 27.fe3 Nb6 28.Bc1 Nc4 29.Bc4 dc4 30.Kf2 (30.Kf1 Ne4 31.Bb2 Kf6+=) 30...Bc8 (30...Ne4 31.Ke1 Nc3 32.Bb2-/+) 31.Bd2 a6 32.e4 (better is 32.Ne5=) 32...Kg8?? (better is 32...Ne4 33.Ke3 f5-/+) 33.e5 Nd7 34.g4 Nb6 35.Kg2 Nd5 36.Kf2 Nb6 37.Kg2 Na4 ½–½. Fournier,Frederic (1995) – carlov (1980), Active Blind, 2008.

4.e3 b6 5.Nf3 Bb7 6.a3 a6 7.d4 0-0-0 8.Bd3 Kb8 9.Nbd2 d6 10.Qc2 Nf6 11.0-0 g6 12.h3 Bg7 13.Rfe1 Rdg8 14.e4 h5 15.e5 de5 16.Ne5 (16.de5!? Nd5 17.c4+/–) 16...Ne5= 17.de5 Nd7 18.Nf3?? (18.c4 Qg5 19.Be4 Be4 (19...Be5? 20.Nf3 Qd8 21.Be5+-) 20.Re4 Qf5+/– (20...Ne5? 21.Be5 Be5 22.Nf3+-)) 18...f6?? (better is 18...Bf3 19.gf3 Ne5-+) 19.ef6+= Nf6? (better is 19...Qf6 20.Be4 Re8+/–) 20.Be4?? (better is 20.Ne5 Qd6 21.Nf7+-) 20...Be4 21.Qe4?? (better is 21.Re4 Ne4 22.Qe4-/+) 21...Ne4-+ 22.Re4 Rd8 23.Rae1 Ka7 (better is 23...Rd6-+) 24.c4 (24.Re6 Qf8-+) 24...Rhg8 (better is 24...Bb2 25.Re6 Qf7-+) 25.Bg7 Qg7 (worse is 25...Rg7 26.Nd4 Rd4 27.Rd4-+) 26.R4e2 Rgf8 (26...Qc3 27.Re6 Qc4 28.R6e4-+) 27.Rc2 White plans c5 (27.Ng5 Qc3 28.Ne6 Qa3 29.Nf8 Rf8-+) 27...Rde8 28.Rec1 e5 29.c5 Kb8 30.cb6 cb6 31.Rc7 (31.Ng5 Qd7-+) 31...Qc7 32.Rc7 Kc7 33.Kh2 (33.Nh4 Rf6 34.Nf3 e4-+) 33...a5 (better is 33...e4 34.Ng1 Rf2 35.Kg3-+) 34.ba5 (34.Kg3 e4 35.Nd4 e3 36.fe3 Re3 37.Kh2 Rd8-+) 34...ba5 (34...e4!? 35.Nd4 Rf2 36.ab6 Kb6 37.Nb3-+) 35.Ne5 (35.Kg1 Rf4-+) 35...Re5 0–1. Fournier,Frederic (1845) – cheekkalluwa (1780), Active, 2009.

4.e3 d6 5.Nf3 Bd7 6.d4 Nd4?? (better is 6...Nf6+=) 7.cd4+- Nf6 8.a3 g6 9.Be2 Bg7 10.Bd3 0-0 11.Nbd2 Rfe8 12.0-0 Qf8 13.h3 Rad8 14.Rc1 c6 15.Re1 d5 16.Nb3 Kh8 17.Nc5 b6 (17...Bc8 18.Ne5+-) 18.Nd7 Nd7 19.Qc2 (19.Rc6 Rc8 20.Qa4 Rc6 21.Qc6 Nf6+-) 19...c5 (19...Nb8 20.Ne5+-) 20.dc5 Bb2 (20...bc5 21.bc5 Rc8 22.c6+-) 21.Qb2 (21.Qb2 Qg7 22.Qg7 Kg7 23.c6+-) 1–0. Fournier,Frederic (1990) – franklinwerbor (1915), Active, 2008.

3.a3?? Nf6 4.c4 0-0 5.Nf3 d5 6.e3 dc4 7.Bc4 c5 8.bc5 Bc5 9.0-0 Be7 10.d4 Nbd7 11.Nbd2 Nb6 12.Bb3 (12.Bd3 Bd7+=) 12...Nbd5 (12...Bd7 13.Rc1=) 13.a4 (13.Ne5 Nd7+=) 13...Nb6 (13...b6 14.Ne5=) 14.a5 Nbd7 15.Qe2 Re8 16.Rfc1 Rb8 17.Ba3 Nf8 18.Ba4 (18.Be7 Re7 19.Ne5 Rc7+/-) 18...Bd7+= 19.Be7 Re7 20.Ne5 Ba4 21.Ra4 N6d7 22.Ndc4 Ne5 23.Ne5 Rc7 24.Rac4 Rc4 25.Qc4 (25.Nc4!? Qd5 26.Qd3=) 25…Ng6 (25...Ng6 26.Ng6 hg6+=) 0-1. Chess__Academy (2490) - zsolti_83 (2510), Rated Bullet game, lichess.org, 2021.

3.e3?? Bf6 4.c3 a5 5.d4 ab4 6.cb4 c5 (6...Be7 7.a3=) 7.b5 (better 7.bc5!? b6 8.cb6+/-) 7...cd4 8.Bd4 d5 9.Bf6 Qf6 10.Qd4 Ne7 11.Nf3 Qd4 12.Nd4 (12.ed4 Nd7=) 12...Nd7 13.Nc3 0-0 14.Be2 Nf5? (14...e5 15.Nf3=) 15.0-0 (better 15.Nf5 ef5 16.Nd5+-) 15...Nd4= 16.ed4 e5? (16...Re8!?=) 17.de5 (17.Nd5 ed4 18.Rfd1 Ne5+/-) 17...Ne5 18.Nd5 Be6 19.Nc7 (19.Rfd1 Bd5 20.Rd5 Rfe8+/-) 19...Ra3 (19...Ra2!? 20.Ra2 Ba2+/-) 20.Ne6 fe6 21.f4 Nd3 22.Rf3 Rd8?? (better 22...Nf4 23.Ra3 Ne2 24.Kh1 Nd4+-) 23.Rd1 Ra2 24.Bd3 Rc8 (24...g6 25.Rff1+-) 25.f5 (better 25.Re3+-) 25...ef5 (25...e5+-) 26.Bf5 Re8 (26...Raa8 27.Be6 Kh8 28.Bc8 Rc8+-) 27.h4 (better 27.Be6 Kh8 28.Ba2+-) 27...Ree2 (27...g6 28.Bd3 Ra4 29.Rc1+-) 28.Bh3 (28.Be6! Re6 29.Rd8 Re8 30.Re8) 28...g6 (28...Ra8 29.Rd7 Rf8 30.Rc3+-) 29.Rd8 Kg7 30.Rd7 Kh6 (30...Kg8 31.Rff7 Ra1 32.Kh2 h5 33.Rg7 Kh8 34.Rh7 Kg8 35.Rdg7 Kf8 36.Rb7 Kg8 37.Rhg7 Kh8 38.Rg6 Rae1+-) 31.Rff7 Re1 (31...Rg2 32.Bg2 Kh5 33.Rh7 Kg4+-) 32.Kh2 g5 (32...Rh1 33.Kh1 Ra1 34.Kh2 Rh1 35.Kh1 g5 36.Rf6 Kh5 37.Rh7) 33.Rh7 (33.Rf6 Kh5 34.Rh7) 33...Kg6 34.Rdg7 (34.h5 Kf6 35.Rh6 Ke5 36.Re6 Kf4 37.Rf7) 34...Kf6+- 35.hg5 Ke5 36.Re7 Kd4 37.Re1 Kc3 38.Ree7 Kb4 39.Rb7 Rb2 40.Ra7 (40.g6 Rd2 41.g7 Rd8+-) 40...Rb1 41.Ra4! Ka4 42.b6! Kb4 (42...Rb6 43.Ra7 Decoy) 43.b7 Kc3 44.b8Q! Rb8 (44...Rb8 45.g6 Passed pawn) 45.Rh8! Rb6?? (45...Rh8 46.Kg3 Combination) 46.Rh7 Kd2?? (46...Rb8 47.g6 Rb5+-) 47.Rc7 (47.Bf5 Rb5 48.Rf7 Rb8+-) 47...Ke1 (47...Rg6 48.Rc5+-) 48.Rc4 (better 48.Re7 Kf2 49.Be6 Rb5 50.Rf7 Ke3+-) 48...Kf2 (48...Rg6 49.Re4 Kf2 50.Re5+-) 49.Re4 (better 49.Bf5 Rb5 50.Rf4 Ke3 51.Kg3+-) 49...Rb3 (49...Rg6 50.Re5+-) 50.Re6 (better 50.Rf4 Ke1 51.g6+-) 50...Rf3 (50...Rb8+-) 51.Rf6 (51.gf3 Kf3 52.g6 Kf4 53.g7 Kf3 54.g8Q Kf4 55.Qg3) 51...Kf1 (51...Rf6 52.gf6 Ke3 53.f7 Ke4 54.g4 Kd4 55.g5 Ke3 56.g6 Kd2 57.g7 Ke3 58.g8Q Kd4 59.Qd8 Kc4 60.Bf1 Kb3 61.Qd3 Kb2 62.f8Q Kc1 63.Qfa3) 52.Rf3 Ke1 53.Rf4 (53.g6 Kd2 54.g7 Kd1 55.g8Q Kd2 56.Qd5 Kc1 57.Qa2 Kd1 58.Rf1) 53...Ke2 54.Rf5 Ke1 (54...Kd2 55.g6 Kc2 56.g7 Kb3 57.g8Q Kc3 58.Qc8 Kb4 59.Rf4 Kb5 60.Bd7 Kb6 61.Rf6 Ka5 62.Qc5) 55.Rf6 (55.g6 Kd2 56.g7 Kc2 57.g8Q Kd3 58.Qb3 Kd2 59.Rd5 Ke2 60.Qf3 Ke1 61.Rd1) 55...Ke2 (55...Kd1 56.Rd6 Ke2 57.g6 Kf2 58.g7 Ke1 59.g8Q Kf2 60.Qe8 Kf1 61.Rf6) 56.g6 Kd1 (56...Ke3 57.g7 Kd3 58.g8Q Kc3 59.Rc6 Kb4 60.Qc4 Ka3 61.Be6 Kb2 62.Qa2) 57.g7 Kd2 (57...Ke2 58.g8Q Kd3 59.Qd5 Kc3 60.Rf3 Kb4 61.Rb3 Ka4 62.Bd7) 58.g8Q Kc1 (58...Kc3 59.Rc6 Kb4 60.Qc4 Ka3 61.Be6 Kb2 62.Qa2) 59.Qe6 (59.Qa2 Kd1 60.Rf1) 59...Kc2 (59...Kd2 60.Qd7 Kc3 61.Rc6 Kb4 62.Qb7 Ka4 63.Ra6) 60.Qc6 (60.Qc6 Kb3 61.Be6 Kb2 62.Rf2 Ka3 63.Ra2 Kb4 64.Ra4; 60.Qc4 Kd1 61.Qc3 Ke2 62.Bg4) 1-0. Zugswong (2605) - zsolti_83 (2550), Rated Bullet game, lichess.org, 2019.

3.Nf3?? Bf6 4.Nc3 Ne7 5.e4 a5?? (better 5...Nbc6+=) 6.e5+- ab4 7.Ne4 (better 7.ef6!? bc3 8.fe7 Qe7 9.Bc3 0-0+-) 7...Be5 8.Ne5 0-0 9.Bd3 (better 9.Qh5!? f6 10.Ng4 Nf5+-) 9...f5 10.Ng5 d6?? (10...h6 11.Nh3 d6 12.Nc4+-) 11.Nef3 (better 11.Qh5 h6 12.Nef7+-) 11...Nd5 12.h4 Nf4 13.g3 Nd3 14.cd3 c5 15.Qb3 Qe7 16.d4 b6 17.0-0 Bb7?? (better 17...h6 18.Nh3 Nc6+/-) 18.Rfe1 Rf6 (18...c4 19.Qc4 Bf3 20.Nf3 d5 21.Qd5 ed5 22.Re7 Nc6+-) 19.dc5 bc5 (19...Nd7 20.Bf6 gf6 21.Ne6+-) 20.Bf6 Qf6 (20...c4 21.Qb4 gf6 22.Re6 Nc6 23.Re7 Nb4 24.Rb7 fg5 25.Rb4 gh4 26.Nh4 f4+-) 21.Qe6 (21.Re6 Qf8 22.Re8 d5 23.Qe3 Nd7 24.Qe6 Kh8 25.Nf7 Kg8 26.Rf8 Rf8 27.Nh6 Kh8 28.Qg8 Rg8 29.Nf7) 21...Qe6+- 22.Re6 (22.Re6 Nd7 23.Rd6+-) 1-0. Trauma (2390) - Tijdverspilling (2515), Rated Bullet game, lichess.org, 2016.

4.Nc3 a5 5.b5 b6 6.e4 d5 7.ed5 ed5 8.Qe2 Kf8 9.0-0-0 Ne7 10.Nf3 Be6 11.Rg1 Nd7 12.g4 Nc5?? (12...c6 13.g5 Bc3 14.Bc3=) 13.g5?? (better 13.d4+-) 13...Bc3+= 14.Bc3 f6?? (better 14...c6!?+=) 15.Nd4 (better 15.gf6 gf6 16.Bf6+-) 15...Bf7 16.gf6 gf6 17.Bh3 Rg8 18.Rg8 Kg8 19.Rg1 Kh8?? (19...Ng6 20.Nf5+-) 20.Qf3 (better 20.Ne6 Ng8 21.Nd8+-) 20...Qf8?? (better 20...Ng8+-) 21.Qf6 Qg7 22.Qg7 (22.Qe7?! Qg1 23.Kb2 Kg8=) 1-0. is_er_nog_hoop (2625) - AbbotHayes (2425), Hourly HyperBullet Arena, lichess.org, 2020.

4.Nc3 d5 5.e3 c5 (5...Ne7!?=) 6.bc5+= e5 (6...Ne7 7.Nf3+=) 7.e4 (7.Nb5 e4 8.Nd6 Kf8+/-) 7...d4 8.Nd5 Nd7 9.Bc4 (better 9.Bb5!?+/-) 9...Nc5= 10.Nf3 Bg4 11.0-0 (11.Bb5 Kf8 12.Qe2 a6=) 11...a6 (11...Ne4 12.Re1 Bf3 13.gf3=) 12.a4 (12.h3 Be6=) 12...Qd6 (12...Rc8 13.Re1=+) 13.a5 (13.Ba3 Rc8+=) 13...Ne7 (13...Ne4 14.Re1 Ng5 15.Ba3=) 14.Ba3 Rc8? (14...Nd5 15.Bd5 (worse 15.ed5 Qc7=+) 15...Rb8 16.Rb1=) 15.Nf6?? (better 15.Nb6+-) 15...Qf6= 16.Be2 0-0 17.d3 (17.Bc5 Rc5 18.Nd4 Rd8=) 17...Ng6 (17...Be6 18.Rc1=+) 18.h3 (better 18.Nd4!? Bh3 19.Nf5 Bf5 20.ef5+=) 18...Bf3 (18...Be6 19.Bc1 h6 20.Ra3=+) 19.Bf3=+ Nf4 20.Rb1 Rfd8 (20...Qg5 21.Kh2=+) 21.Rb6 (21.Bg4 Rc6=) 21...Rd6=+ 22.Qb1 (better 22.Rd6!? Qd6 23.Bg4=+) 22...Rb6-+ 23.Qb6 Qb6 24.ab6 Na4 (better 24...Rc6!?-+) 25.Bd6=+ f6 (worse 25...Nb6 26.Rb1 Rc6 27.Be5+=) 26.g3? (26.Bc7 h5=+) 26...Ne6 (better 26...Nh3!? 27.Kg2 Ng5-+) 27.Bg4-/+ Kf7 28.Ra1 (28.Bc7 Nc3-/+) 28...Nc3 (28...Nb6 29.Rb1 Rc6 30.Bb8-/+) 29.Ra5 (better 29.Bb4!?=+) 29...Rc6-+ 30.Bb8 (30.Bb4 Rb6 31.Bc3 dc3-/+) 30...g6 (30...Rb6 31.f4 Rb1 32.Kf2 ef4 33.gf4-+) 31.f4 (31.Ba7 Nf8-/+) 31...h5 (31...ef4 32.gf4 Rb6 33.Be6 Ke6 34.Rc5-+) 32.Bf3 (32.Be6!? Re6 33.fe5 Rb6 34.ef6 Rf6 35.Rc5=+) 32...ef4 33.gf4 Nb5 (33...Rb6!? 34.f5 Ng5 35.Bg2-+) 34.f5-/+ gf5?? (34...Ng5!? 35.Bg2 h4-/+ (35...Rc2?! 36.h4=)) 35.Bh5?? (better 35.ef5 Nd8 36.Bc7 (36.Bh5?! Kf8=; 36.Bc6 Nc6 37.Rb5 ab5=) 36...Rc7 37.bc7 Nc7 38.Ra4+-) 35...Ke7= 36.ef5 Ng5 (36...Ng7 37.Bf3 Rb6 38.Be4=) 37.h4 Nh7? (37...Nf7 38.Bf3 Rb6 39.h5=) 38.Bg6 (better 38.Ra1!? Rb6 39.Re1 Kd7 40.Re8+-) 38...Nf8+= 39.Ra1 Rc2? (39...Ng6 40.fg6 f5 41.Re1 Kf6+-) 40.Re1+- Kd7 41.Be8 Kc8? (41...Kd8 42.Bb5 ab5+-) 42.Bb5 Kb8 (42...ab5 43.Re8 Kd7 44.Rf8 b4 45.Rf6 b3 46.Rd6 Ke8 47.Re6 Kf7+-) 43.Re8 (better 43.Bc4 Kc8 44.Re8 Kd7 45.Rf8+-) 43...Rc8+= 44.Rc8 (44.Ba4 Re8 45.Be8 Kc8+=) 44...Kc8 45.Ba4 (45.Bc4 a5+=) 45...Kd8= 46.h5 Ke7 47.Kf2 Kd6 48.Kf3 Ke5?? (48...Kc5 49.Bb3=) 49.Kg4?? (49.Bc6 Kd6 50.Bb7 Kc5 51.Ba6 Kb6+-) 49...Nh7?? (better 49...Kd5=) 50.h6 (better 50.Bc6 Kd6 51.Bb7+-) 50...Ng5?? (better 50...a5+/-) 51.Kh5+- Nh7 (51...Kf5 52.Bc6!! Ke5+-) 52.Kg6 Ng5 53.Bd7 (better 53.Bc6! a5+-) 53...a5 54.h7 Nh7 55.Kh7 a4 (55...Kd6 56.Ba4 Kd5+-) 56.Ba4 Kf5 57.Bc2 (better 57.Bc6! Ke6 58.Bb7 f5+-) 57...Kf4 58.Kg6 f5 (58...Ke5+-) 59.Kf6 Ke3 60.Kf5 (better 60.Bb3 f4 61.Bd5 Kd3 62.Bb7 Ke3+-) 60...Kd2 61.Ba4 (better 61.Ke4 Kc2 62.Kd4+-) 61...Kd3 62.Bc6 Kc3?? (62...bc6 63.b7 Passed pawn) 63.Bb7+- d3 64.Bf3 d2 65.Bd1 (better 65.b7+-) 65...Kb4 (65...Kb2+-) 66.b7 Kc5 (66...Kc3 67.b8Q Kc4 68.Ke5 Kc5 69.Ba4 Kc4 70.Qb5 Kc3 71.Qb3) 67.b8Q (67.b8Q Kc4 68.Qb3 Kc5 69.Qa3 Kb6 70.Qd6 Kb5 71.Be2 Ka4 72.Qb6 Ka3 73.Bd1 Ka2 74.Qb3 Ka1 75.Bc2 d1Q 76.Qa3) 1-0. only1b4 (2270) - zsolti_83 (2375), Rated Bullet game, lichess.org, 2018.

4.Bf6 Nf6 5.d4 0-0 6.c4 (6.Nf3 d6=) 6...Re8 7.Nd2 d6 8.Ngf3 Nfd7 (8...e5 9.de5 de5 10.e3=+) 9.e3= Nf8 (9...e5 10.Bd3=) 10.Bd3+= Nbd7 11.Bb1 Nf6 12.Qc2 N6d7 (12...e5 13.0-0=) 13.h4 (13.0-0 a5 14.Qc3 ab4 15.ab4 Ra1 16.Qa1 e5+=) 13...Nf6 14.Ng5 h6 15.Nge4 Ne4 16.Ne4 d5 17.Ng3 c6 18.h5 e5 19.de5 Re5 20.cd5 Rd5 21.0-0 (21.Ba2 Re5=) 21...Qh4 (21...Bg4 22.Ba2 Rd7 23.f3=+) 22.Rd1 (22.Ba2 Rd8=) 22...Be6 (22...Rd1!? 23.Qd1 Bg4-/+) 23.Rd5= Bd5 24.Qf5 (24.Qc3 Qg5=) 24...Be6 25.Qe4 (better 25.Qf4 Qf4 26.ef4=+) 25...Rd8?? (better 25...Qf6 26.Qd4 Qd4 27.ed4 Rd8-/+) 26.Ra2 (better 26.Qh4 Rd7 27.Be4+-) 26...Rd1-+ 27.Nf1 Qe4 28.Be4 Ba2 (28...Ba2 29.Bf3 Ra1-+) 0-1. javirod1983 (2310) - zsolti_83 (2395), Rated Bullet game, lichess.org, 2017

4.Bf6 Nf6 5.d4 a5 6.Nf3 (6.b5!?=) 6...ab4-/+ 7.a4 Nc6 8.Ne5 0-0 9.Nc6 bc6 10.Qd2 Rb8 (10...Qe7 11.c3-/+) 11.e3 Qe7 12.Bd3 Bb7 13.0-0 Ra8 14.c3 bc3 (14...c5 15.dc5 b3 16.Qd1-/+) 15.Nc3=+ Ba6 16.Rfd1 Ra7 17.Bc2 Rfa8 18.Ne4 (18.e4 Bc4=+) 18...Ne4 19.Be4 Bc4 (19...d5 20.Bc2=+) 20.Qc2 (20.Bh7 Kh7 21.Qc2 Kg8 22.Qc4 Ra5+=) 20...d5 (20...Bb5!? 21.Bh7 Kh8=+) 21.Bh7+= Kh8 22.Bd3 Bd3 23.Rd3 Ra4?? (better 23...Qd7+=) 24.Ra4+- Rb8 25.Rda3 Qd8 (25...c5 26.dc5 Kg8 27.Ra8+-) 26.h3 Qf8 (26...g6 27.Qc6 Rb1 28.Kh2 Qd6 29.Qd6 cd6 30.Ra7+-) 27.Ra1 g6 28.Qc6 Kg7 (28...Qd6 29.Qc2+-) 29.Ra8 (29.Qc7 Rc8 30.Qe5 Kg8+-) 29...Ra8 30.Ra8 Qb4 (30...Qe7+-) 31.Qc7 (31.Qe8 Qb1 32.Kh2 Qh1 33.Kh1 g5 34.Qh8 Kg6 35.Rg8 Kf5 36.Qe5) 31...Qe1 32.Kh2 Qf2 (32...Qc1 33.Qe5 f6 34.Ra7 Qc7 35.Rc7 Kh6 36.Qf6 e5 37.Qh4) 33.Qe5 (33.Qd8 Kh6 34.h4 g5 35.Qh8 Kg6 36.Rg8 Kf5 37.Qe5 Kg4 38.Qg5) 33...f6 34.Ra7 (34.Qe6 Qg2 35.Kg2 g5 36.Rg8 Kh6 37.Qf6 Kh5 38.Qg5) 34...Kh6+- 35.Qf4 (35.Qf4 Qf4 36.ef4+-) 1-0. javirod1983 (2305) - zsolti_83 (2400), Rated Bullet game, lichess.org, 2017.

5.Ba1 d6 6.Nf3 e5 7.e4 Nf6 (7...f5 8.Bc4 Nf6 9.d4+-) 8.d4 Ne4 9.de5 de5 10.Bd3 (10.Be5?! Qd1 11.Kd1 Nf2 12.Ke1 Nh1=) 10...Ng5 11.Ne5 Be6 (11...Qe7+-) 12.h4 Bd5 (12...Nh3 13.gh3 Qe7 14.a3+-) 13.hg5 Bg2 (13...Qg5 14.Bb5 c6 15.Qd5 Qc1 16.Ke2 Qc2 17.Nd2 Qf5+-) 14.Rh7 Bd5 15.Rh8 Ke7 16.Ng6! Kd6 (16...fg6 17.Bf6 Deflection (17.Rd8 Zwischenzug)) 17.Rd8 Kc6 (17...Nd7 18.Be4 c5 19.Qd5 Kc7 20.Rd7 Kb6 21.Qb7) 18.Ne7 Kb6 19.Bd4 c5 20.Nd5 Kc6 21.b5 1–0. wiking – Admilton, internet, 2010.

5.Ba1 Qe7 6.a3 a6 (6...Nf6 7.Nf3+-) 7.e4 Nc6 8.Qh5 (8.e5 d6 9.Qg4 Qf8+-) 8...Nf6 9.Bf6 Qf6 10.c3 (10.Qh7?! Qa1 11.Be2 Qb1 12.Bd1 Qb2+-) 10...Ke7 (10...h6 11.d4+-) 11.Qh7 Ne5 (11...e5 12.Nf3+-) 12.d4 Ng6 13.h4 Qh8 (13...d6 14.h5 Nf8 15.Qg8+-) 14.Qh8 Nh8 15.h5 b6 16.h6 f6 (16...Bb7 17.Bd3+-) 17.Nf3 (17.Nd2 Bb7+-) 17...Bb7 18.Nbd2 Nf7 (18...Ng6 19.Ke2+-) 19.h7 Rh8 (19...d5 20.Bd3+-) 20.Nh4 Kf8 21.Ng6 Kg7 22.Nh8 Kh8 23.Rh5 Ng5 (23...b5 24.g4+-) 24.e5 Nh7 (24...f5 25.Rg5 Kh7 26.g4+-) 25.ef6 Kg8 26.f7! Kf7 27.Rh7 Ke8 28.g4 Kf8 29.Rd7 Bc8 30.Rc7 (30...a5 31.Rc8 Ke7 32.Rc6+-) 1–0. b4_player (2220) – NN, GameColony.com, 2003.

5.Ba1 Qe7 6.a3 d5 7.e3 a6 (7...Nd7 8.Qg4 Ngf6 9.Qg7+-) 8.Nf3 (8.Qg4!? Nf6 9.Qg7 e5 10.Qh8 Kd7+-) 8...Nc6 9.Bd3 h6 10.Ne5 Nf6 (10...Ne5 11.Be5 Qg5 12.Bc7 Qg2 13.Rf1+-) 11.Qf3 Ne5 12.Be5 Ne4 13.Be4 de4 14.Qe4 f5 15.Qf4 Qg5 16.Qg5 hg5 17.Bc7 Bd7 18.c3 Bc6 19.f3 Bb5 20.d4 Rc8 21.Be5 Bd3 22.Kd2 Bc4 23.h4 g4 (23...gh4 24.Rh4 b5 25.Rh8 Kd7 26.Rc8 Kc8 27.e4+-) 24.f4 (24.h5!? Kd7+-) 24...Bd5 (24...Kf7 25.h5 Kg8 26.a4+-) 25.Rh2 (25.h5!? Kf7 26.h6 Bg2+-) 25...Be4 (25...Kf7 26.c4! Rc4+-) 26.Rh1 (better is 26.h5 Kd7+-) 26...Bg2?? (26...Bd5 27.h5 Kf7+-) 27.Rg1+- Be4 28.Rc1 Kd7 (28...b5 29.h5 Kf7 30.a4 ba4 31.Na3+-) 29.c4 (29.h5 g3 30.h6 g2+-) 29...Bf3 (29...Ke7 30.h5 Kf7 31.Nc3+-) 30.Ke1 (better is 30.h5 g3 31.h6 Ra8+-) 30...g3 31.Kf1 Rg8 32.Nd2 Bc6 33.Bf6 (33.Kg1 Rg4 34.b5 ab5 35.cb5 Bd5+-) 33...g2 34.Kg1 Rg3 35.Re1 Rh3 36.Kf2 Rh1 37.Rg1 Ke8 38.c5 (38.a4 Kf7 39.Bg5 Ba4+-) 38...Kf7 39.Bg5 Kg6 40.Nc4 Kh5 41.Ne5 Be4 42.a4 Rh2 43.b5 a5 44.c6 b6 45.Nf3 (better is 45.Nd7 Kg6 46.Nf6 e5 47.Ne4 Rh1+-) 45...Rh3 46.Ne5 Rh2 47.c7 Bb7 48.Nd7 Kg4 49.Nb6 (better is 49.Nf6 Kh3 50.h5 Rh1+-) 49...Kh3 50.c8Q Bc8 51.Nc8 Rh1 52.Rg2 (better is 52.b6 Kh2 53.Rg2 Kh3+-) 52...Rc1 53.Rg3 Kh2 54.Nb6 Rc2 55.Kf3 Rc1 56.Rg2 Kh1 57.h5 Rf1 58.Rf2 Rg1 59.h6 Rc1 60.h7 (60.h7 Rc7 61.h8Q Rh7 62.Qh7 Kg1 63.Qh2) 1–0. Pachurka,Roland – Vetter,Gerhard, Schleswig Holstein–ch Basis, 2008.

5.Ba1 Qe7 6.b5 Qb4 (6...Nf6 7.e3+-) 7.e3 Qa4 (7...d6 8.c4+-) 8.Nc3 Qa3 9.Bd3 Nf6 (9...d5 10.Bh7 Nf6 11.Bd3+-) 10.Nf3 (10.b6 c6 11.Nb5 cb5 12.Bf6 ab6+-) 10...Nd5 (10...Qe7 11.Ng5+-) 11.Nd5 ed5 12.0-0 Qa2 (12...a6 13.Ng5 ab5 14.Qh5+-) 13.Ne5 d6 14.Nf7! Kf7 (14...Ke7+-) 15.Qh5 Ke7 16.Qh7 Ke6 (16...Kf8 17.Qg7 Ke8 18.Bg6 Kd8 19.Bf6) 17.Bf5 1–0. GuestTXZF – GuestFXKT, freechess.org, 2017.

5.Ba1 Nf6 6.Bf6 Qf6 7.c3 Nc6 8.b5 Ne5 9.Nf3 Nf3 10.ef3 b6 11.Be2 Bb7 12.0-0 a6 13.ba6 Ba6 14.c4 d5 15.Qa4 Kf8 16.Qc6 Bb7 17.Qb7 Ra2 18.cd5 Ra1 19.de6 fe6 20.Qc8 Kg7 21.Qc7 Kh6 22.Nc3 Rf1 23.Bf1 b5 24.Nb5 Qa1 25.Qg3 Qb1 26.Nd4 Qc1 27.Ne6 Qd2 28.f4 Qd5 29.Qg7 Kh5 30.Qh7 Kg4 31.h3 1–0. pinecrest1981 – HarlemSoul, caissa.com, 2004.

5.c3 a5 6.b5 c6 7.a4 cb5 8.ab5 d5 9.e3 Qg5 10.Nf3 Qg7 11.Na3 Nd7 12.d4 f6 (12...Ngf6 13.Rg1+-) 13.c4 Ne7 14.c5 e5 (14...b6 15.c6 Nf8 16.Rc1+-) 15.g3 (15.b6!? Nf8+-) 15...e4 16.Nh4 Nf8 (16...f5 17.Ra2+-) 17.Be2 Qh6 (17...b6 18.Rc1+-) 18.Bg4 (better 18.b6!? Ne6+-) 18...f5 19.Bh5 Kd8 20.Ng2 Bf6 21.Nf4 Bg5 22.h4 Bf4 23.gf4 Bd7 24.Rg1 (24.Be2 Qg7+-) 24...Ne6 25.Nc2 (25.Rh1 Nc7 26.Be2 Qg7+-) 25...a4 (25...Bb5 26.Be2 Be2 27.Qe2+-) 26.b6 (26.Be2 Qh4 27.Nb4 Qh2+-) 26...Bb5 (26...Qf6 27.Rh1+-) 27.Nb4 (27.Bf7 Qf6 28.Be6 Qe6+-) 27...Kd7 (27...Qf6 28.Be2 Bd7 29.c6 Bc6 30.Nc6 Nc6 31.Ra4+-) 28.Be2 Bc6 (28...Be2 29.Qe2 a3 30.Qa2 Qh4 31.Nd5+-) 29.Nc6 Nc6 30.Bb5 Qh4 31.Ra4 Qh2 32.Bc6 Kc6 33.Rf1 Rg8 (33...Rd8 34.Ra7 Kd7 35.Qa4 Ke7 36.Rb7 Kf6 37.Qa7+-) 34.Ra7 Nc5 (34...Kd7 35.Rb7 Kc8 36.Re7+-) 35.dc5 (better 35.Qc2 Kd7 36.Qc5 Qg3 37.Rb7 Kd8 38.Qd6 Ke8 39.Qe7) 35...Kc5 (35...Rg1 36.Qa4 Kc5 37.Qd4 Kc6+-) 36.Rb7 (36.Ra5 Kd6 37.Qd5 Ke7 38.Qb7 Kf6 39.Qc6 Kg7 40.Ra7 Kh8 41.Qf6 Rg7 42.Qg7) 36...Kc6 37.Rc7 Kb6 (37...Kd6 38.Qd4 Qf2 39.Kf2 Rg2 40.Kg2 h5 41.Qe5) 38.Qc1 (38.Qc2 Rg2 39.Qc5 Ka6 40.Ra7) 38...Rg6 (38...Rg7 39.Qc5 Ka6 40.Rc6 Kb7 41.Qb6 Ka8 42.Rc8) 39.Qc5 Ka6 40.Ra7 1-0. MCHpenguin2 (2310) - zsolti_83 (2410), Rated Bullet game, lichess.org, 2019.

5.c3 d5 6.e3 e5N 7.Qc2 Nf6 8.d4 Nc6 (8...Nbd7 9.Nf3 Qe7 10.Be2+-) 9.b5 Na5 10.de5 Ne4 11.Nf3 Be6 12.Bd3 Bf5 13.Nbd2 Nd2 14.Bf5 Nf3 15.gf3 Be5 16.Rg1 Qf6 1–0. marekt – hotpawn, ChessWorld.net, 2002.

5.Nc3 Nc6 6.a3 Nge7 7.e3 Nd5 8.Nge2 b6 9.d4 Ba6 (9...Nf6 10.Ng3+-) 10.Nd5 (better is 10.b5!? Bb5 11.Nb5 a6+-) 10...ed5 11.Rc1 f5 (11...Qg5+-) 12.Ng3 Bf1 13.Nf1 (better is 13.Qh5!? Kf8 14.Qf5 Qf6 15.Rf1 Qf5 16.Nf5 b5+-) 13...Qe7 14.Qh5 Qf7 15.Qf7 Kf7 16.Ng3 Ke6 17.0-0 a5 18.b5 Na7 19.a4 c6 20.c4 (better is 20.bc6 dc6 21.c4 dc4 22.Rc4+-) 20...cb5? (20...dc4 21.Rc4 cb5 22.ab5 f4+-) 21.cb5 Bg7 22.Rc7 Nc8 23.Rfc1 Nd6 24.R7c2 Bh6 25.Ne2 Bg5 26.g3 h6 (26...Nc4 27.h4 Bh6 28.Kh2+-) 27.h4 Bf6 28.Nf4 Ke7 (28...Kf7 29.Rc7 Ke8 30.Nd5+-) 29.Nd5 Ke6 (29...Kf7 30.Nb6 Rd8 31.Rc7+-) 30.Nb6 (better is 30.Nc7 Kf7 31.Na8 Bd8+-) 30...Ra7 31.Nc4 Ne4 32.Nd2 (32.b6 Rb7 33.Rb1 Bd8+-) 32...Nd6 33.Rc7 Ra8 34.b6 (34.Nb3!? Ne4+-) 34...Rb8 35.Rb1 (35.Nb3 Ne4+-) 35...Bd8 36.Rcc1 (36.Ra7!? Rb6 37.Rb6 Bb6+-) 36...Bb6 37.Nc4 Nc8 38.Rb3 d5 (38...Ba7 39.Na5 Ra8+-) 39.Nb6 Nb6 40.Rcb1 Nd7 41.Rb8 Nb8 42.Rb8 (42.Rb8 Ke7 43.Rh8+-) 1–0. Fournier,Frederic – LUIS03ECO, Active, 2007.

5.Nc3 d5 6.d4 a5 7.b5 c6 8.Nf3 c5 9.e3 cd4 10.ed4 Nd7 11.Bd3 Ngf6 12.0-0 Qc7 13.Qd2 Bg7 14.Rfe1 b6 15.Ne5 (15.Qg5 Kf8 16.Ne2 Bb7+-) 15...Bf8? (15...Ne5 16.de5 Ng4+-) 16.Nc6 Bb7 17.Rab1 Bc6 18.bc6 Qc6 19.Bb5 Qc7 20.Na4 0-0-0?? (20...Rb8 21.Qg5 Ne4 22.Qh5+-) 21.c4! Bd6? (21...dc4 22.Bd7 Double attack) 22.cd5 (better 22.Ba6!? Kb8 23.Nb6 Nb6+-) 22...Bh2 23.Kh1 Kb8 (23...Bf4 24.Bd7 Kd7 25.de6 Ke7+-) 24.Rbc1 (better 24.Bd7 Nd5 25.Qa5+-) 24...Qd6? (24...Bf4 25.Qb2 Bc1 26.Rc1+/-) 25.Rc6?? (25.Nb6 Nb6 26.Rc6 Nfd5 27.Rd6 Bd6 28.Rb1+- (28.Qa5 Bb4 29.Qa6 Be1=+)) 25...Qd5+/- 26.Qd3 (better 26.Kh2 Qb5 27.Qc2 Qh5 28.Kg1+-) 26...Ne5?? (better 26...Rg8 27.Qf3 Qf3 28.gf3 Bc7=) 27.de5 (better 27.Rb6 Qb7 28.Rb7 Kb7+-) 27...Qd3 28.Bd3 Be5 29.Re5 Rd3 30.f3 (better 30.Rb6 Kc7 31.Ra5+-) 30...Ng4 (30...Nd7 31.Rh5 Rd4 32.Nb6 Kb7 33.Nd7 Kc6 34.Ne5 Kb6 35.Nf7 Ra4+-) 31.fg4 Rd4 32.Nb6 Kb7 33.Rec5 Rd1 34.Kh2 Rd3 35.Nc8 Rd4 (35...Rd5 36.Rb6 Ka8 37.Rc7 Rd7 38.Rd7 f5 39.Ra7) 36.Rb6 Ka8 37.Ra5 1-0. is_er_nog_hoop (2605) - butterflynight (2390), World Prize Team Battle, lichess.org, 2020.

5.Nc3 e5 6.e4 d6 7.Qh5 Nf6 8.Qh6 a6 9.Bc4 Nc6 10.a3 Nd4 11.0-0-0 (better 11.Rc1 b5 12.Ba2+-) 11...Qe7? (11...b5!? 12.Bd3 c6+/-) 12.h3 (better 12.Nd5!? Nd5 13.Qh7 Nb6 14.Qh8 Kd7+-) 12...a5 13.b5?? (better 13.Nd5 Nd5 14.Bd5 ab4 15.Qh7+/-) 13...d5= 14.Nd5 (14.ed5?? Qa3 15.Kb1 Nf5-+; 14.Bd5 Qa3 15.Kb1 Qb4 16.Kc1 Nd5-+) 14...Qa3 15.Kb1 Nd5 16.Bd5?? (16.Qh7 Qb4 17.Bb3-+) 16...Qb4-+ 17.Ka1 (17.Bb3 Nb3 18.Qe3 Nd2 19.Kc1 Ne4 20.Rd3-+) 17...Qa4 18.Ba2 Nc2 (better 18...Bg7! 19.Nf3 Bh6-+) 19.Kb2 Nd4 (19...Qe4 20.d3 Qd4 21.Kc2+=) 20.Qh7?? (20.Qh5 Qb5 21.Kc1 Qc6 22.Kb2-+) 20...Qb5 (20...Qd1?! 21.Qf7 Kd8 22.Qf8 Kd7 23.Qf7 (23.Qh8?? Qc2 24.Ka1 Qc1 25.Bb1 Nc2 26.Ka2 Qa3) 23...Kd6 24.Qf8 Kd7 25.Qf7 (25.Qh8 Qc2 26.Ka1 Qc1 27.Bb1 Nc2 28.Ka2 Qa3) 25...Kd8 26.Qf8 Kd7=) 21.Kc1 Qc5 22.Kb2 Qc2 23.Ka1 Qd1 24.Kb2 (24.Bb1 Qa4 25.Kb2 Qb4 26.Kc1 Nb3 27.Kb2 Na1 28.Kc1 Qc4 29.Kb2 Qd4 30.Kc1 Nb3 31.Kc2 Qd2 32.Kb3 Be6 33.Ka4 Qb4) 24...Qd2 (24...Qc2 25.Ka1 Qc1 26.Bb1 Nc2 27.Ka2 Be6) 25.Kb1 Qc2 26.Ka1 Qc3 (26...Qc1 27.Bb1 Qc3 28.Ka2 Be6) 27.Kb1 Qc2 28.Ka1 Qc3 (28...Qc1 29.Bb1 Qc3 30.Ka2 Be6) 29.Kb1 Qd3 (29...Qc2 30.Ka1) 30.Kb2 (30.Ka1 Qc3) 30...Qd2 (30...Qc2 31.Ka1) 31.Kb1 Qd1 (31...Qc2 32.Ka1) 32.Kb2 Qc2 33.Ka1 ½-½. is_er_nog_hoop (2440) - fallthrough (2550), Rated blitz game, lichess.org, 2018.

5.d4 a5 6.ba5 c5 7.e3 cd4 8.ed4 Nc6 9.Nf3 e5 10.de5 Ne5 11.Nbd2?? (11.c3 Qa5 12.Nd4 Nf6+-) 11...Qa5? (11...Nf3 12.gf3 (worse 12.Nf3 Qa5 13.Ke2 Ra6=) 12...Ba1 13.Qa1+/-) 12.Be2?? (better 12.Rb1+-) 12...Nf3+= 13.Bf3 Bc3? (better 13...Ba1 14.Qa1 Qa2+=) 14.Qe2+- Ne7 15.Rd1 Ra6 (15...Qa2 16.Qd3 Qe6 17.Kf1 Qa6 18.Qa6 Ra6+- (18...ba6?? 19.Ba8 a5 20.Ne4 Ba6 21.Kg1+-)) 16.0-0 Re6 17.Ne4 (17.Qd3 d5+-) 17...b6?? (better 17...d5 18.Nc3 Re2 19.Ne2 Qa2+/-) 18.Nd6+- Kd8 (18...Kf8 19.Qd3 Ba6 20.Qh7+-) 19.Nf7 Kc7 20.Qc4 Kb8 21.Qf4 Be5 22.Qg4 (better 22.Ne5 Qe5 23.Qd2+-) 22...Bb7 (22...Bc7 23.c4+-) 23.Ne5 (better 23.Rd7 Bc8 24.Qe6 Bd7 25.Qe7 Bh2 26.Kh2+-) 23...Qe5 24.Qg3 (better 24.Bb7 Kb7 25.Rd7 Kb8+-) 24...Qg3 25.hg3 Ba6 (25...Bf3 26.gf3 Kc7 27.Rfe1+-) 26.Rfe1 Bc8 (26...Kc7 27.Re6 de6 28.Rd4+-) 27.Re6 de6 28.Bg4 (28.Rd8 Kc7 29.Rh8 Kd6+-) 28...e5 (28...Kc7 29.f4+-) 29.Bf3 (better 29.Bc8 Kc8 30.Rd6+-) 29...Nc6 (29...Kc7 30.Be4+-) 30.Be4 (better 30.Bc6 Bf5+-) 30...Na5 (30...Kc7+-) 31.Bf3 (31.Rd5!? Nc4 32.Bh7 Be6+-) 31...Nc4?? (31...Nc6 32.Bc6 Bf5 33.Ba4+-) 32.Be4 Nd6?? (32...Na5 33.Bh7 Kc7+-) 33.Re1 (better 33.Rd6 Kc7 34.Rc6 Kb7 35.Rc5 Kb8 36.Re5 Kc7+-) 33...Nf5 (33...Ne4 34.Re4 Bf5 35.Re5 Bc2+-) 34.Re3! Nd4?? (34...Ne3 35.fe3 Combination) 35.Rf3! Ne2?? (35...Nf3 36.gf3 Combination) 36.Kf1 Nd4 37.Ke1 (37.Rf7 h6+-) 37...Bb7?? (37...Nf3 38.gf3 h6+-) 38.Kf1 Ka7?? (38...Bc8 39.Rf7+-) 39.Ke1 (better 39.Rf7 Nc2 40.Rb7 Ka6 41.Re7+-) 39...Ka6?? (better 39...Be4 40.Rf7 Ka6=) 40.Re3+- Ka5 (40...Be4 41.Re4 Nc6+-) 41.Re2 (41.Bb7 Nc2 42.Ke2 Ne3 43.Ke3 Ka4+-) 41...Kb4?? (41...Ne2 42.Bb7 Nc3+-) 42.Re3 (better 42.Bb7!? Ne2 43.Ke2 Kc5+-) 42...Kc5?? (42...Ka5 43.Bb7 Nc2 44.Ke2 Ne3 45.Ke3 Ka4+-) 43.Rd3 (better 43.Bh7 Kd6 44.c3+-) 43...Kd6?? (better 43...Be4 44.Rc3 Kd6-/+) 44.Rd4! Kc5 (44...ed4 45.Bb7 Zwischenzug) 45.c3 ed4 46.cd4 Kd6 (46...Kd4 47.Bb7 Ke5+-) 47.Bf5 (better 47.Bb7 h6 48.a4+-) 47...Kc7? (47...Kd5+-) 48.Be4 (better 48.Bh7 Bg2 49.a3+-) 48...Kd8?? (better 48...Be4 49.f3 Bb1=+) 49.Bf3 (49.Bb7 h6+-) 49...Ke7 (49...Bc8+-) 50.Be4 (50.Bb7 h6+-) 50...Kd6?? (50...Be4 51.f3 Bd5 52.a3=+) 51.Bf3 (51.Bb7!? h6+-) 51...Bc6?? (51...Ke7 52.Bb7 Kd6+-) 52.Be4 (better 52.Bc6 Kc6 53.Kd2 Kd5+-) 52...Bd5?? (52...Be4!? 53.Kd2 Bg2-/+) 53.Bf3 (53.Bd5 Kd5 54.Ke2 Kd4+-) 53...Bc4?? (53...Bc6 54.Bc6 Kc6 55.Kd2+-) 54.Be4 Bd5 55.Bf3 Bc4 56.Be4 (56.Be4 Bd5=) 1-0. psgsoccerook (2530) - zsolti_83 (2625), Rated Bullet game, lichess.org, 2020.

5.d4 Nc6 6.c3 d5 7.e3 e5 8.Bb5 ed4 9.Bc6 bc6 10.cd4 Ne7 11.Qh5 Bf5 12.Nd2 a5 13.ba5 c5 14.Nb3 c4 15.Nc5 Qb8 16.a6 Qb4 17.Kf1 Qb2 18.Re1 Qa2 19.Ne2 Bg6 20.Qh3 Qa5 21.Qd7 Kf8 22.Ng3 Rb8 23.Ke2 Rb2 24.Kf3 Rb8 25.Ra1 Qb6 26.a7 Ra8 27.Ra6 Qb2 28.Qc7 Bd4 29.Qb8 Kg7 30.Nd7 Be4 31.Kg4 f5 32.Kh5 Bf3 33.gf3 Qf2 34.Ne5 Qe3 35.Qa8 Qe5 36.Qb8 Qe3 37.Nf5 Kf7 38.Ne3 1–0. Machete99 (2190) – Ischoolyouboy (2005), ICC, 2002.

5.d4 d5 6.Nf3 Nc6 (6...Nd7 7.e3+-) 7.b5 Nce7 8.e3 Qd6 (8...Nf6 9.Bd3+-) 9.c4 c6 (9...e5 10.de5 Be5 11.c5+-) 10.bc6 (10.c5 Qc7+-) 10...Nc6 11.cd5 Qd5 (11...ed5 12.Bd3+-) 12.Nbd2 (12.Nc3 Qa5 13.Rc1 e5+-) 12...Bf6 (12...Nf6 13.Bd3+-) 13.Qc2 a5 (13...h5 14.Qh7 Kf8 15.Bc4+-) 14.Qh7 Kf8 15.Bd3 (15.h4 Bg7+-) 15...Nb4 (15...Bg7 16.Bc4 Qd8 17.Qh5+-) 16.Be4 Qd8 17.0-0 (17.a3 Nd5+-) 17...Ke7 (17...Bg7 18.a3 Nd5 19.Bd5+-) 18.Nc4 a4 (18...Ra6 19.Nce5 Qe8 20.Bg6 Be5 21.Ne5+-) 19.Nfe5 Qe8 (19...Be5 20.Ne5 Qe8 21.Rab1+-) 20.Ng6 Kd8 (20...Kd7 21.Nb6 Kc7 22.Na8 Kd8 23.Nb6+-) 21.Nd6 Qd7 22.Qg8 Kc7 23.Rfc1 (better is 23.Ne8 Kb6 24.Nf6 Qd6 25.Qf7 Ka7+-) 23...Kd6 24.Qf8 Be7 25.Qf7 Nc6 26.Rc6! bc6 (26...bc6 27.Qf4 Mate attack) 27.Qf4 e5 28.Qe5 1–0. michaelbuss (2855) – daft, ChessWorld.net, 2009.

3.a3 a5 4.h4 (4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5=) 4...ab4=+ 5.ab4 Ra1 6.Ba1 h5 7.Nf3 Nf5 (7...d5 8.e3=) 8.e3 (8.e4 Ne7+=) 8...Bb4 (8...d5 9.Bd3=) 9.Bd3 (9.e4!? Ne7 10.Bg7+=) 9...Bf8 10.Bf5 ef5 11.Nc3 c6 12.Ne2 d5 13.Ng3 Be6 (13...f6 14.0-0=+) 14.Qb1 Qd7 15.Nd4 (15.0-0 Na6=+) 15...Bd6 16.Nge2 0-0 17.Nf3 Na6 18.Nf4 g6?? (18...Bf4 19.ef4 c5 20.d4-/+) 19.Rh3?? (19.Qb2 d4 20.Qd4+/- (20.Nd4?! Be5=; 20.Ne6?! Qe6 21.0-0 Nb4=)) 19...Bf4-/+ 20.ef4 Re8 (20...c5 21.Kf1-/+) 21.Kf1 (21.Qb2 d4 22.Nd4 f6=) 21...Nc5 (better 21...c5!?-/+) 22.Qb2= d4 23.Nd4 Bc4 (better 23...Na4 24.Qc1 b5=) 24.d3+- Qe7?? (better 24...Na4 25.Qb4 c5 26.Qc4 cd4 27.Qd4 Qd4 28.Bd4 b5+/-) 25.Re3 Nd3 26.cd3 Bd3 27.Kg1 (27.Ne2 f6 28.Re7 Re7 29.Qf6 Be2 30.Ke1 Bc4 31.Qe7 Bf7 32.Qd8 Be8 33.Qe8 Kh7 34.Qh8) 27...Be4 (27...f6 28.Re7 Re7+-) 28.Nf5! (28.Nf5 Qe5 29.fe5+-) 1-0. FeegLood (2520) - chessBS_at_Twitch (2420), lichess.org, 2015.

3.b5 a5 4.a4 c6 5.c4 cb5 6.cb5 d5 7.e3 Nd7 8.Nf3 Ng6 9.Be2 Be7 (9...e5 10.0-0=) 10.0-0 (10.Bg7 Rg8 11.Bb2 e5+-) 10...Bf6 (10...0-0 11.d4=) 11.d4 0-0 12.Nbd2 e5 13.de5 Nde5 14.Ne5 Ne5 15.Bd4 Ng6 16.Nf3 Be6 17.Rc1 Rc8 (17...Bd4 18.Qd4 (worse 18.ed4 Nf4=) 18...Qe7 19.Bd3+-) 18.Rc8 Qc8 (18...Bc8 19.Bf6 Qf6 20.Qd5+-) 19.Bf6+- gf6 20.Nd4 (20.Qd2 Qd8+-) 20...Ne5 21.Qd2 Nc4 (21...Qc7 22.Rc1 Nc4 23.Qd1+-) 22.Bc4 dc4 23.Qa5 Bd5 24.Rc1 Qg4 Do you see the mate threat? 25.f3 Qg5 26.Qd2 Re8 27.Kf2 (27.Rc3 b6+-) 27...Qe5 (better 27...Qh4!? 28.Kf1 Qh2+-) 28.e4+- Be6 29.Ne2 (better 29.Ne6!? Qe6 30.Qd5+-) 29...Qh2 30.Qf4 Qh5 31.Qg3 (31.Qf6 Qc5 32.Nd4 Ra8+-) 31...Qg6 (31...Qg5 32.f4 Qg6 33.Rc3 Qg3 34.Ng3+- (34.Kg3?! f5+=)) 32.Nf4 Qg3 33.Kg3 Rc8 34.Rc3 Kf8 35.Kf2 Ke7 36.Ke3 Kd6 37.Kd4 Ra8 38.Ne6 fe6 39.Rc4 e5 40.Ke3 Ke6 41.g4 Rd8 (better 41...Kd6!?+-) 42.Rc7 Rd4 43.Rh7 Ra4 44.Rb7 Ra3 45.Kf2 Ra2 46.Kg3 Rb2 47.Rb6 Kf7 (47...Ke7+-) 48.Rb7?? (better 48.Rb8 Ke7+-) 48...Kg6?? (48...Ke6 49.Rb8 Kd7+-) 49.b6+- Rb5 50.Rb8 Rb3 51.b7 Kf7 (51...Kh7+-) 52.Rh8 Rb7 53.Rh7 Ke6 54.Rb7 (54.Rb7 Kd6 55.f4 ef4 56.Kf4+-) 1–0. BeepBeepImAJeep (2750) – speedcuber12 (2455), lichess.org, 2020.

3.b5 c5 4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 d5 8.c4 Bd7 9.Nf3 d4 (better 9...dc4!? 10.Bc4 Nf5=) 10.ed4+- cd4 11.Bd4 Nf5 12.Bb2 b6 (12...Bc8 13.Be2+-) 13.Be2 (13.Bd3 Nd6+-) 13...Bc5 14.0-0 0-0 15.d4 f6?? (better 15...Bd6+-) 16.dc5 bc5 17.Nc3 Qe7 (17...Qc7 18.Ba3+-) 18.Ne4 (18.Bd3 e5+-) 18...e5 (18...Bc8 19.Ba3 Nd7 20.Qd3+-) 19.Ba3 (better 19.Qd5 Be6 20.Qc5+-) 19...Nd4 (19...Rc8+-) 20.Bc5 Ne2 21.Qe2 Qf7 22.Bf8 Qf8 23.c5 Be6 24.c6 Bd5 (24...Qc8+-) 25.Rd1 Qf7 26.Nd6 (26.Rd5!? Qc7+-) 26...Qe6 27.c7 (27.c7 Qd6 28.c8Q Qf8 29.Qec2 Qc8 30.Qc8 Kf7 31.Ne5 fe5 32.Rd5 g6 33.Qb8 e4 34.Qc7 Kf6 35.Qe5 Kf7 36.Rd7 Kf8 37.Qb8) 1–0. BeepBeepImAJeep (2510) – InsertCheck (2115), lichess.org, 2017.

3.b5 c6 4.c4 cb5 (4...d5 5.e3=) 5.cb5 Ng6 6.a4 f6 7.e3 Bb4 (7...d5 8.Qh5=) 8.Nf3 (8.Bd3 Kf7+=) 8...b6 (8...d5 9.Qb3 Bd6 10.Bd3=) 9.Be2 0-0 10.0-0 d5 11.d4 Nd7 12.Nbd2 (better 12.Bd3+=) 12...e5?? (12...Qe7 13.Bd3+=) 13.de5 (13.Qb3 Bd2 14.Qd5 Kh8 15.Qa8 Bb4+-) 13...fe5?? (better 13...Nde5 14.Qb3 Bd2 15.Nd2 Bf5+-) 14.Qb3+- Bd2 (14...Nc5 15.Qb4 Qf6 16.Rad1+-) 15.Qd5 (15.Nd2?! Nc5 16.Qd1 Bf5=) 15...Kh8 16.Nd2 (better 16.Qa8 Bb4 17.Rac1+-) 16...Rb8 (16...Bb7 17.Qd3+-) 17.Nc4 Bb7 18.Qd2 Qg5 Threatening mate: Qxg2 19.f3 Nh4 (19...Rbd8 20.Qe1+-) 20.Rf2 (better 20.g3 Rfd8 21.e4 Qd2 22.Nd2+-) 20...Bf3?? Increases the pressure on g2 (20...Rf3 21.Bf3 (21.Qd7? Rf2 22.Kf2 Rf8 23.Ke1 Ng2 24.Kd2 Rd8 25.Qd8 Qd8 26.Kc1 Bd5 27.Ne5 Qg5-+) 21...Nf3 22.Rf3 Bf3 23.Rf1+-) 21.e4?? (better 21.Qd7 Rbd8 22.Qh3 (22.Qa7 Bg2 23.Be5 Bd5 24.Bg3 Rf2 25.Kf2 Rf8 26.Ke1 Bc4 27.Qb6 Ng2 28.Kd2 Rd8 29.Kc1 Be2-+) 22...Be2 23.Re2+-) 21...Bg2?? (better 21...Qd2 22.Nd2 Be2 23.Re2 Rbc8+=) 22.Qg5+- (22.Qd7 Bh3 23.Bg4 Rf2 (23...Bg4?! 24.Qd2 Rf4 25.Ne5 Bf3 26.Kf1-+) 24.Kf2 Rf8 25.Bf5 Nf5 26.ef5 Rf5 27.Qf5 Qf5 28.Ke3 Qf4 29.Kd3 Bf5 30.Kc3 Be6-+) 22...Nf3 23.Bf3 Bf3 24.Ne5 Ne5 25.Be5 Rbe8 (25...Rf6 26.Bf6 Rb7 27.Rc1 Bg4 28.Bg7 Rg7 29.Rf8 Rg8 30.Rg8) 26.Qg7 1–0. BeepBeepImAJeep (2740) – enzo17 (1740), lichess.org, 2016.

3.d4 d5 4.Nf3 a6 (4...Nf5 5.a3=) 5.Nbd2 b6 (5...Nbc6 6.c3=) 6.c4+= Bb7 7.a3 dc4 (7...Ng6 8.e3+=) 8.Nc4 Nd5 (8...Nd7 9.e3+=) 9.Qc2 (9.e4 Nf6+=) 9...Nc6 (9...f5!?+=) 10.e4+- Nde7 (better 10...Nf6!?+-) 11.Rd1+- Qd7 (11...Ng6 12.Bd3 Nf4 13.d5 Nb4 14.ab4 Bb4 15.Kf1+-) 12.Ne3 0-0-0? (12...f6+-) 13.d5 ed5 14.ed5 Na7 (14...Nd5 15.Nd5 (15.Rd5?! Nb4 16.ab4 Bb4 17.Rd2 Bf3 18.Ba6 Kb8+-) 15...Qe6 16.Ne3 Rd1 17.Qd1+-) 15.Ne5 Qe8 16.d6 Nec6 (16...Nd5 17.dc7 Nc7 18.Rd8 Kd8+-) 17.d7 Rd7 18.Nd7 Bd6 (18...Nb5 19.Be2 h5 20.0-0+-) 19.Nb6! cb6 20.Rd6 Kb8 (20...Kc7 21.Rd2 f6 22.Be2+-) 21.Bg7 1–0. Pierre – GuestAln123, internet, 2020.

3.e3 a6 4.c4 Nbc6 5.b5 ab5 6.cb5 Na7 (6...Na5 7.Nf3=) 7.h4 (7.Nc3!?+/–) 7...b6+= 8.Nf3 c5 9.d4 (9.h5 h6+=) 9...Nd5 (9...cd4 10.Bd4 Nf5 11.Bb2+=) 10.dc5 bc5 (better is 10...Bc5 11.Bg7 Rg8+/–) 11.Bc4?? (better is 11.e4 Nf6 12.e5+/–) 11...Qa5 12.Nfd2 (better is 12.Nbd2 Nb5 13.Qb3+=) 12...Nb4?? (12...Nb5 13.Qb3 Ndc7 14.a4-/+) 13.0-0?? (better is 13.Nc3!? d5 14.a3+-) 13...d5 (13...Nb5 14.a3 Nc6+=) 14.Nb3 (14.a3 dc4 15.ab4 Qb5+/– (15...Qb4? 16.Qf3 Qb2 17.b6 Qa1 18.Qa8+-)) 14...Qc7 (better is 14...Qb6 15.Be2 Nb5-/+) 15.Be2+= c4 16.Nd4 Bd6 (16...e5 17.Nf3 Nb5 18.Be5+=) 17.g3 (17.a3!? Nd3 18.Bd3 cd3 19.f4+/–) 17...0-0 18.Nc3 e5 (18...Rb8 19.a4 Bg3 20.a5=) 19.Nc2+= Bb7 (19...Qa5!? 20.Nb4 Qb4+=) 20.Nb4+/– Bb4 21.Nd5 Qd6 22.Bc4 Rad8?? (better is 22...Rac8 23.Rc1 Rc4 24.Rc4 Bd5 25.Be5 Qe5 26.Rb4 Nc8+- (worse is 26...Ba2 27.Qa1 Qe6 28.Rc1+-)) 23.e4 (better is 23.Nb4 Qb4 24.Qb3 Qb3 25.ab3 Nc8 26.Be5 Bf3+-) 23...Bc8 (23...Bd5 24.Qd5 Qd5 25.ed5 Rfe8+-) 24.Qf3 (24.Nb4 Qb4 25.Qb3 Qa5+-) 24...Kh8 (24...Be6+-) 25.Ba3 (better is 25.Nb4 Qb4 26.Qb3+-) 25...Ba3-/+ 26.Qa3?? (better is 26.Rfd1-/+) 26...Qg6 (better is 26...Qa3 27.Rac1 f5-+) 27.Qe3 White plans b6 (better is 27.Qa7 Qe4 28.Ne3 Bb7+-) 27...Bh3 28.Rfd1 (28.Qa7 Qe4 29.Ne3 Bf1 30.Rf1 f5+-) 28...Nc8 29.b6 Nd6 30.Bd3 f5 31.Ne7 Qe6 (31...Qf6 32.Nf5 Bf5 33.ef5 e4 34.Be4 Ne4 35.Qe4 Qb6+-) 32.Nd5 (better is 32.Nf5 Qf7 33.Nd6 Rd6 34.a4+-) 32...f4 (32...Qg6 33.ef5 Nf5+-) 33.gf4 (33.Qe1!? Bg4 34.Rdc1+/–) 33...ef4+= 34.Qf3 (34.Nf4 Qg4 35.Qg3 Qf4 36.e5 (worse is 36.Qh3 Qf2 37.Kh1 Rf4+=) 36...Qg3 37.fg3+=) 34...g5?? (34...Bg4 35.Nf4 Qc8= (35...Bf3 36.Ne6 Bd1 37.Rd1+-)) 35.Bf1?? (better is 35.hg5 Bg4 36.Nf4+-) 35...Bg4?? (better is 35...Bf1 36.Rf1 Ne4+=) 36.Qc3 (36.Nc7 Qd7 (36...Bf3?? 37.Ne6 Rg8 38.hg5+-) 37.Qc3 Qg7 38.Qg7 Kg7+-) 36...Kg8 37.f3 Bh5 (37...Ne4 A) 38.fe4 Bd1 39.Kh2 Rd5 (39...Qe4 40.Rd1 Ra8 41.b7 Ra2 42.Kg1+-) 40.Rd1 Qb6 41.Rd5 Qf2 42.Bg2 Qh4 43.Kg1 f3+-; B) 38.Qc4 Kg7 39.Qe4 (39.fe4?! Bd1 40.Qd4 Kg6 41.Rd1 Qg4 42.Kf2 Qh4 43.Ke2 Qh2 44.Kd3 Qa2+-; 39.fg4?! Qg4 40.Bg2 f3 41.Qc7 Kg8 42.Ne7 Kf7 43.Nc6 Kg8 44.Ne7 Kf7 45.Nd5 Kg8=) 39...Qe4 40.fe4 Bd1 41.Rd1 gh4 42.a4+-) 38.Bc4 (better is 38.hg5 Ne4 39.Qb3+-) 38...Bf7 (38...Nc4 39.Qc4 Bf3 40.Nf6 Kf7 41.Qe6 Ke6 42.Rd8 Rd8 43.Nh7 Kd6 44.Ng5 Bh5+-) 39.Nf6 Qf6 40.Qf6 Bc4 41.Qg5 Kh8 42.Qe5 Kg8 43.Rd6 Rde8 44.Qc5 (44.Qg5 Kh8 45.Kf2 Bd5 46.Rg1 Rf7 47.Rd8 Bc6 48.Qe5 Rg7 49.Qg7) 44...Be2 45.Kf2 Ba6 (45...Rf7 46.Rg1 Rg7 47.Rg7 Kg7 48.Qg5 Kh8 49.Rd7 Rg8 50.Qe5 Rg7 51.Qg7) 46.Rb1 (46.Rg1 Kh8 47.Qc3 Re5 48.Qe5 Rf6 49.Qf6) 46...Rc8 (46...Re7 47.Qd5 Kh8 48.Qd4 Rg7 49.Rg1 Rfg8 50.Rg7 Bc4 51.Re7 Rg7 52.Qg7) 47.Rc6 (47.Rg1 Kf7 48.Rd7 Ke6 49.Qe7) 47...Rcd8 (47...Rc6 48.Qc6 Rd8 49.b7 Rd2 50.Kg1 Rg2 51.Kg2 Bb7 52.Rb7 h6 53.Qe8) 48.Rb2 (48.Rg1 Kf7 49.Qf5 Ke8 50.Qe6) 48...Bb7 49.Rc7 (49.Qg5 Kh8 50.Rc7 Rd2 51.Rd2 Rg8 52.Qg8 Kg8 53.Rd8) 49...Rb8 (49...Rd2 50.Rd2 Bd5 51.Qd5 Kh8 52.Qe5 Kg8 53.Qg7) 50.Qe7 (50.Qe7 Rf7 51.Qf7 Kh8 52.Qh7; 50.Qg5 Kh8 51.Qg7) 1–0. Melzig,Ernst – Gafke,Manfred, Wch Seniors, 2002.

3.e3 b6 4.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 Ne7).

3.e3 c6 4.a4 Ng6 5.Nf3 f6 6.b5 cb5 7.ab5 Be7 8.Be2 0-0 9.0-0 d6 10.c4 Bd7 11.e4 a6 12.Nc3 a5 13.Na4 b6 14.Bd4 f5 15.ef5 Rf5 16.Nb6 Ra7 17.Na4 Rb7 18.h3 Bf6 19.Bf6 Qf6 20.Nh2 Nf4 21.Bf3 Rc7 22.d3 e5 23.Nb6 Be6 24.Bg4 Rg5 25.Kh1 Bg4 26.Ng4 Qg6 27.Nd5 Rf7 28.Nf4 Rf4 29.Ra5 h5 30.Ne3 Nd7 31.g3 1–0. Abdullaevich (1810) – Ve2 (1840), lichess.org, 2020.

3.e3 Nbc6 4.a3 d5 5.Nf3 Nf5 6.c4 d4 (6...dc4 7.Bc4 Be7 8.0-0=) 7.ed4 (better is 7.b5!? Nce7 8.e4+/–) 7...Ncd4= 8.Nd4 Nd4 9.d3 e5 10.Nd2 g6 (10...a5!? 11.ba5 Bd6+=) 11.Nf3= Bg7 12.Nd4 ed4 13.Be2 0-0 14.0-0 Qd6 15.Re1 Bf5 16.Bc1 Be5 17.g3 b6 18.Bf1 c5 19.b5 Qd7?? (better is 19...Rae8=) 20.Re5+- Bg4 21.Qe1 Rae8 22.Re8 Re8 23.Qd2 Qe6 24.a4 Qe1 25.Qe1 Re1 26.Bb2 Re6 27.a5 Re7 28.ab6 ab6 29.Bc1 Bc8 (29...Re1 30.f4+-) 30.Bh6 (30.Ra8 Re8 31.Bf4 Kf8 32.Bd6 Kg7+-) 30...f5 (30...Bb7+-) 31.Ra8 Re8 32.Rb8 Kf7 33.Rb6 Re6 (33...Bd7 34.Rb7 Ke7 35.Bg2+-) 34.Re6 Ke6 35.Bf4 (better is 35.Bf8 Bb7+-) 35...Bb7 36.Bg2 Bc8 (36...Bg2 37.Kg2 Kd7 38.Be5+-) 37.b6 Kf6 (37...Ba6 38.b7 Bb7 39.Bb7+-) 38.b7 Bb7 39.Bb7 g5 40.Bd6 h6 41.Bc5 f4 42.Bd4 Kf5 43.Be4 Ke6 44.c5 fg3 45.hg3 h5 46.c6 Kd6 47.f4 h4 48.fg5 hg3 (48...h3 49.g6 Ke7 50.g7 Kd6 51.g8Q h2 52.Kh2 Ke7 53.Qg7 Ke8 54.Bg6 Kd8 55.Qd7) 49.g6 Kc7 (49...Ke6 50.g7 Kd6 51.g8Q Kc7 52.Qf7 Kc8 53.Qd7 Kb8 54.c7) 50.g7 Kc8 (50...Kd8 51.g8Q Kc7 52.Qf7 Kc8 53.Qd7 Kb8 54.c7) 51.g8Q (51.Bb6 g2 52.g8Q) 51...Kc7 52.Be5 (52.Qh7 Kc8 53.Qd7 Kb8 54.c7) 52...Kb6 53.Qb3 Kc5 (53...Ka6 54.Bc3 g2 55.Qb7) 54.Qc4 (54.d4) 54...Kb6 55.Bd4 (55.d4 Ka7 56.Qc5 Ka6 57.Bd3) 55...Kc7 (55...Ka5 56.Qb3 g2 57.Bc3 Ka6 58.Qb7) 56.Be5 (56.Qf7 Kc8 57.Qd7 Kb8 58.c7) 56...Kb6 57.c7 Ka5 1–0. Fournier,Frederic (1710) – roquigar, Active, 2006.

3.e3 Nd5 4.b5 Ne7 5.Nf3 h6 (5...d5 6.Be2+=) 6.c4 (6.Be2 d5+=) 6...Ng8 (6...d5 7.Be2=) 7.Be2 Nf6 8.0-0 Nh7 (8...d5 9.d4+=) 9.a4 g5?? (better is 9...Nf6+/–) 10.Bh8+- Qf6 (10...d6+-) 11.Bf6 Nf6 1–0. GuestRTFM – GuestRDKB, freechess.org, 2018.

3.e3 Rg8 4.c4 Nec6 5.b5 Ne7 6.Nf3 d6 7.Nc3 Nd7 8.Be2 h6 9.0-0 g5 10.Qc2 Ng6 11.h3 Be7 12.Nd4 Nf6 13.Ne4 Nd7 14.a4 Ndf8 15.a5 Bd7 (15...e5 16.Nb3+=) 16.c5 (16.a6 b6+/–) 16...d5 (16...dc5 17.Nb3+/–) 17.Ng3 c6 18.a6 Qc8 19.Rfb1 e5? (19...ba6 20.bc6 Bc6 21.Ba6 Bb7 22.Bb5 Nd7+-) 20.ab7 Qb7 21.bc6 (21.Nc6?! Bc6 22.bc6 Qc6 23.Be5 Qc5 24.Qa4 Nd7+-) 21...Bc6 22.Ba3 Qc7 (22...Qb1 23.Qb1 ed4+-) 23.Nc6 Bf6 (23...Nd7 24.Ba6 Qc6 25.Bb7+-) 24.Nb4 a5 (24...Ne7 25.Nf5 Kd8+-) 25.Nd5 Qd8 26.Bb5 Nd7 27.c6 Ra7 28.cd7 Rd7 29.Nf6 Qf6 30.Qc8 Qd8 31.Bd7 1–0. Janek – Stephen, internet, 2016.

3.e4 d5 4.Nc3 d4 (4...Ng6 5.a3=) 5.Nce2 (5.Na4 Ng6 6.Nf3 Bb4 7.Bd4 0-0=) 5...e5 6.Nf3 Ng6 7.c3 d3 (better is 7...dc3!? 8.Bc3 Bg4=) 8.Nc1+/– Nf4 (8...a6!?+/–) 9.g3+- Ng6 10.Nd3 c6 (10...Qd6 11.Be2+-) 11.h4 Bd6 (11...h5 12.Nfe5 Ne5 13.Ne5 Qe7+-) 12.h5 Ne7 (12...Nf8 13.Nde5 Be5 14.Ne5+-) 13.h6 g6 14.Nfe5 (14.Nde5 Nd7 15.Nd3 f6+-) 14...Nd7 (14...0-0 15.Bg2+-) 15.Ng4 b6 (15...f6 16.c4+-) 16.e5 Ne5 (16...Bc7 17.c4 0-0 18.Bg2+-) 17.Nde5 Be5 18.Ne5 Nd5 (18...f6 19.Nf3 Qd6+-) 19.Nc6 Qd6 (19...Qc7 20.b5 0-0 21.Qf3 Re8 22.Be2+-) 20.Qe2 Be6 21.b5 (21.c4 0-0 22.Qe5 Qe5 23.Be5 Rfe8+-) 21...0-0 (21...Ne7 22.Bg2 0-0 23.a4 Nc6 24.Ba3+-) 22.c4 (22.Ba3 Qd7 23.Bf8 Rf8+-) 22...Nb4 (22...Rae8 23.Be5 Qa3 24.Bg2+-) 23.Be5 Qc5 (23...Qd7 24.Nb4 Rae8+-) 24.d4 (24.d4 Bg4 25.dc5 Nc6 26.Qg4 Ne5 27.Qf4+-) 1–0. marre – opponent, internet, 2009.

3.Nf3 b6 4.e3 Bb7 (---> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 Ne7).

3.Nf3 b6 4.g3 Ng6 5.a3 Bb7 6.Bg2 Nc6 7.0-0 a6 8.c4 a5 9.b5 Nce7 10.h4 Nf5 11.d3 h5 12.e4 Nfe7 13.Nd4 Ng8 14.Nc2 Nf6 15.Ne3 Be7 16.Nd2 Bd6 17.f4 e5 18.fe5 (18.Nf5!?+-) 18...Be5+/– 19.d4 (better is 19.Be5!? Ne5 20.d4+/–) 19...Bg3= 20.e5 (20.Nf5!? Bh4 21.Ng7 Kf8 22.Nf5=) 20...Bg2 21.Kg2 Ng4 22.Ng4 hg4 23.Qg4 Bh4 24.Rf5 Be7 25.Rh1 Rh4 26.Qg3 Ra7 27.Rhf1 Rh6 28.Rf7 Nh4 29.Kg1 Rg6 30.Qg6?? (better is 30.Rg7 Rg3 31.Rg3+/–) 30...Ng6-/+ 31.Rg7 Nf8 32.Rg8? (32.Ne4 d5 33.ed6 cd6 34.Re1=) 32...Qa8 33.d5 Qb7 34.Ne4 Ra8 35.Ng5 a4? (better is 35...d6+/–) 36.Nh7+- Bc5 37.Kh2 Ke7 38.Nf8 Re8 39.Ng6 Kd8 40.Re8 Ke8 41.d6! (41.d6 Bd6 42.ed6 Qf3 43.Rf3 cd6 44.Rf8) 1–0. roy1nc6 (1820) – closeaccount (1880), gameknot.com, 2012.

3.Nf3 Nbc6 4.a3 d5 5.e3 a6 6.d4 f6 7.c4 dc4 8.Bc4 Ng6 9.0-0 Be7 10.Nbd2 0-0 11.Rc1 Na7 12.Qc2 c6 13.Bd3 Qe8 14.Ne4 Nb5 15.Nc5 Nd6 16.Ne4 Ne4 17.Be4 Qf7 18.Bg6 Qg6 19.Qg6 hg6 20.Nd2 Rd8 21.Ne4 a5 22.ba5 Ra5 23.Ra1 b5 24.Bc3 (24.Rfc1 Kf7 25.f3+= (worse is 25.Rc6 Bb7 26.Ng5 fg5-/+)) 24...Ra3-/+ 25.Ra3 Ba3 26.Ra1 Be7 27.Ra8 (27.Ba5 Rd5+=) 27...Bd7 (27...b4!? 28.Be1 e5-/+) 28.Rd8+= Bd8 29.Nc5 Bc8 30.Kf1 Bb6 31.Bb4 Kf7 32.f3 e5 33.Ke2 ed4 34.ed4 Be6 35.Ke3 Bc5 36.Bc5 Bd5 37.g3 Ke6 38.f4 Kf5 39.h3 g5 40.fg5 Kg5 41.Bf8 g6 42.Bd6 f5 43.h4 Kg4 44.Kd3 Be4 45.Kc3 g5 46.hg5 Kg5 47.Bf4 Kg4 48.Kb4 Kf3 49.Kc5 Ke2 50.Kb4 Kd3 51.Be5 Bd5 52.Bf6 Ke4 53.Be5 Be6 54.Bf6 f4 55.gf4 Kf4 56.Be5 Ke4 57.Bf6 Kd3 58.Be5 Bd5 59.Bf6 Bc4 60.Be5 Ke4 61.Bf6 Kd5 62.Be5?? (better is 62.Bg7-/+) 62...c5!-+ 63.dc5 Ke5 64.c6 Kd6 65.c7 Kc7 66.Kc5 (66.Kc3 Kc6 67.Kb4 Bd5-+) 66...Kb7 67.Kb4 Kb6 (67...Kb6 68.Kc3 Kc5 69.Kd2 b4 70.Kd1 b3 71.Kc1 Be6 72.Kd2 Kb4 73.Kd1 Bf5 74.Ke2 b2 75.Kf1 b1Q 76.Kf2 Qd3 77.Ke1 Bg4 78.Kf2 Qf3 79.Kg1 Bh3 80.Kh2 Qg2) 0–1. Fournier,Frederic (1605) – Rdl234, Partie evaluee, 3m + 1s, 2007.

3.Nf3 Nd5 4.b5 a6 5.a4 (5.e4 Nf6 6.Nc3 ab5 7.Bb5 Be7+=) 5...ab5 6.ab5 (6.e4 Nf6 7.e5 Nh5 8.ab5 Ra1 9.Ba1 d6+=) 6...Ra1= 7.Ba1 c6 (7...Nf6 8.g3=) 8.c4 Qa5 9.Nc3 Nb4 10.Bb2 f6 (10...Be7 11.e3+=) 11.e3 d5 12.Be2 Bc5 (12...Kf7 13.0-0+/-) 13.d4 (13.0-0 dc4 14.Bc4 cb5 15.Nb5 N8c6+-) 13...Be7+/- 14.0-0 0-0 15.Qb3 dc4 16.Bc4 Nd5 (16...cb5 17.Be6 Kh8+-) 17.bc6 (17.Bd5?! cd5 18.Ra1 Qb4+=; 17.Nd5?! ed5 18.Bd3 Be6+/-) 17...Nc6 18.Nd5 ed5 19.Bd5 Kh8 20.e4 Qb4 21.Qc2 Bg4 22.Bc3 Qb5 (22...Qd6 23.Rb1 Bf3 24.gf3+-) 23.Rb1 Qa6 24.Nh4 1-0. DEFFM – GuestNBPM, freechess.org, 2021.

3.Nf3 d6 (--> 2.Bb2 d6 3.Nf3 Ne7).

3.f4 Ng6 4.e3 Bb4 5.Bg7 Rg8 6.Bh6?? (6.Bb2 d5=) 6...d5 (better is 6...Qh4 7.g3 Qh6-+) 7.Bg5 Qd7 (7...f6!? 8.Bh6 e5+=) 8.Qh5= Rf8 9.Bd3 Nc6 10.Bg6 hg6+= 11.Qh7 Ne7 12.Bh6+= Rg8 13.Nf3 Qb5 14.Ng5 Kd7? 15.Qf7 Kc6 16.Ne6 Be6 17.Qe6 Bd6 18.Nc3 Qb2 19.0-0 Qc2 20.Nd5! Nd5 21.Rac1 Qc5 22.Rc5 Kc5 23.Rc1 (23.Rc1 Kb5 24.Qd5 Ka6 25.Qd3 b5 26.a4+-) 1–0. wood – KANIUKA, Live Game Caissa's Web, 2005.

3.g3 Ng6 4.Bg2 f6 5.a3 d5 6.e3 Be7 7.d3 Nd7 8.Nd2 0-0 9.Ne2 Bd6 10.0-0 b5? (10...a5 11.b5=) 11.c4 (11.Nd4!? Nb6 12.Nb5+/–) 11...c6+= 12.c5 Bc7 13.e4 e5?? (better is 13...Nde5=) 14.ed5+- cd5?? (14...Nc5 15.bc5 cd5+-) 15.Nc3 (better is 15.Bd5 Rf7 16.Qb3+-) 15...Bb7+/– 16.Nd5 Bd5? (better is 16...Bc6+/–) 17.Bd5+- Kh8 18.Ba8 Qa8 19.Ne4 (19.a4 Rb8 20.Qg4 Ndf8+-) 19...Qd8 20.Rc1 f5 21.Nc3 a6 22.Nd5 Bb8 23.h4 f4 24.h5 Ne7 25.Ne7 Qe7 26.Qg4 f3 27.c6 Nb6 28.Rfe1 Bc7 29.d4 Nd5 30.de5 Rf7 31.Rcd1 Nb6 32.e6 Rf6 33.Bf6 Qf6 34.e7 h6 35.e8Q Kh7 36.Qgg6 Qg6 37.hg6 1–0. baudrey – TARKUS, Live Game Caissa's Web, 2004.

3.g3 h5 4.Bg2 h4 5.e3 hg3 6.hg3 Ng6 7.Rh8 Nh8 8.Qh5 Ng6 9.a3 Nc6 10.Ne2 Nce7 11.Nf4 d5 12.d4 Qd6 13.Nd2 Bd7 14.c4 dc4 15.Nc4 Qa6 16.Rc1 0-0-0 17.Na5 Bc6 18.Bc6 Nc6 19.Nc6 bc6 20.Ng6 fg6 21.Qg6 Rd6 22.Qe8 Rd8 23.Qe6 Kb8 24.Qc6 Qc6 25.Rc6 Kb7 26.b5 a6 27.a4 ab5 28.ab5 Ra8 29.Bc3 Ra2 30.f4 Rg2 31.d5 Rg3 32.Kf2 Rh3 33.e4 Be7 34.Bg7 Bh4 35.Kg2 Rb3 36.Be5 Bd8 37.f5 Re3 38.Bc7 Bc7 39.Re6 Kc8 40.Kf2 Rb3 41.f6 Rg3 42.f7 1–0. RaphaisL (1605) – vendra726 (1700), lichess.org, 2019.

3.Bg7?? Bg7 4.d4 d6 5.e3 Nd7 6.c4 (6.Nf3 e5-+) 6...Nf6 (6...e5 7.Nf3-+) 7.c5 Ng6 8.cd6 cd6 9.Nd2 0-0 10.Ngf3 e5 11.h4 (11.Rc1 Qe7-+) 11...ed4 12.h5 (12.Nd4 Nd5 13.h5 Nh4-+) 12...Ne5 (12...de3!? 13.fe3 Ne7 14.h6-+) 13.ed4 (13.Nd4 Be6-+) 13...Nf3 14.Nf3 Re8 15.Be2 Bg4 16.h6 Bh5?? (better 16...Bh8-+) 17.hg7= Bf3 18.gf3 Qe7 19.Rg1 (better 19.Rc1=) 19...Nd5-/+ 20.Qd2?? (better 20.Rc1 Nf4 21.Rc2-/+) 20...Nf4-+ 21.Kf1?? (21.Rg4 Qe2 (21...Ne2?! 22.Re4-/+) 22.Qe2 Ne2-+ (22...Re2?! 23.Kf1-/+)) 21...Qe2 (better 21...Qh4 22.Rc1-+) 22.Qe2 Ne2 (22...Re2?! 23.Rg4 Rc8 24.Rf4=+) 23.Re1 (23.Rg4-+) 23...Ng1 24.Re8 Re8 25.Kg1 d5 26.Kg2 b5 27.a4 (27.Kg3-+) 27...a5 (better 27...ba4 28.b5 a3 29.f4-+) 28.ab5 ab4 29.b6 b3 30.b7 Rb8 (30...b2 31.b8R Rb8 32.Kh2-+) 31.f4 b2 32.Kg3 b1Q 33.Kg4 Qg6 (33...f5 34.Kg3 Qg1 35.Kh3 Rb7 36.f3 Rg7 37.Kh4 Qh2) 34.Kf3 Qe6 (34...Rb7 35.f5 Qf5 36.Kg3 Rb3 37.f3 Qf3 38.Kh4 Qf4 39.Kh5 Rh3) 35.f5 Qe4 (35...Qf5 36.Ke2 Rb7 37.Kf1 Qh3 38.Ke1 Rb2 39.f4 Qh1) 36.Kg3 Qf5 (36...Rb7 37.f3 Rb3 38.Kh3 Qf3 39.Kh4 Qf4 40.Kh5 Rh3) 37.f3 (37.Kh4 Qf3 38.Kg5 h5 39.Kh6 Qg4 40.f4 Qg6) 37...Qg6 (37...Rb7 38.Kh4 Rb2 39.Kg3 Qg5 40.Kh3 Rg2 41.f4 Qg4) 38.Kf4 (38.Kh3 Rb7 39.f4 Rb3 40.Kh4 Rg3 41.f5 Qg4) 38...Rb7 39.Ke5 Qg7 (39...Qg5 40.Kd6 Qe7 41.Kd5 Rc7 42.f4 Qe6) 40.Kf5 (40.Kd5 Rd7 41.Kc4 Qd4 42.Kb5 Rd6 43.Ka5 Qc4 44.f4 Ra6) 40...Rb4 (40...h6 41.f4 Qg6 42.Ke5 Qe6) 41.Kf4 Qd4 (41...f6 42.Kf5 Kf7 43.f4 Qg6) 42.Kg3 Qf6 (42...Qh4 43.Kg2 Rb2 44.Kf1 Qf2) 43.Kh3 (43.f4 Qf4 44.Kh3 Qg5 45.Kh2 Rh4) 43...Qg6 (43...Qf3 44.Kh2 Rb2 45.Kg1 Qd1) 44.f4 Rf4 45.Kh2 Rh4 0-1. pigeons (2450) - opperwezen (2640), lichess.org, 2017.

3.h4 d6 4.h5 Nd7 5.h6 Rg8 6.hg7 Bg7 (worse 6...Rg7 7.Bg7 Bg7 8.d4+/-) 7.Bg7 Rg7 8.Nc3 a5 9.b5 c6 10.a4 cb5 11.Nb5 Nc5 12.Ra3 Nf5 (12...e5 13.d4 Ne4 14.Nf3+=) 13.Qa1 (better 13.Rah3+=) 13...Bd7?? (13...e5 14.d4 ed4 15.Nf3=) 14.Nd4?? (better 14.Nd6 Kf8 15.Nf5 ef5 16.Nf3+-) 14...Qf6 Attacking the isolated pawn on a4 (14...e5 15.Nf5 Bf5 16.Nf3=) 15.Nf5= Qa1 16.Ra1 ef5 17.e3 (17.Rh4 b5=) 17...Na4 (worse 17...Ba4 18.d4 Bc2 19.dc5 dc5 20.Rc1+=) 18.Nf3 b5 (18...Nc5!?=+) 19.Nd4+= Rb8 (better 19...Nb6+=) 20.Nb5?? (20.Rh5 h6+/-) 20...Bb5 (better 20...Rb5 21.Bb5 Bb5=+) 21.Bb5?? (21.Rb1 Ke7 22.c4+= (worse 22.Bb5 Rg2 23.Rb3 Nc5=+)) 21...Rb5-+ 22.Ke2 Nc5 23.Rh5 Rg2 24.Rf5 Rb2 25.Ra5 Rc2 26.Ra7 Nb3?? (26...Nd7 27.Rb5 Rc8 28.Rbb7-+) 27.Kf3?? (better 27.Rff7 Rh2 28.Rae7 Kd8 29.Rd7 Kc8 30.Ra7 Rd2 31.Kf1 Rd1 32.Ke2 Rd2 33.Kf1 Rd1 34.Ke2 Rd2=) 27...Rg7-+ 28.d4 Nd2 29.Kf4 Nc4 30.Ra8 Ke7 (30...Kd7 31.Ra7 Kc6 32.Ke4-+) 31.Ra7 Ke6?? (better 31...Kd8 32.Ke4 h6-+) 32.f3 (32.d5) 32...Ne3!-+ 33.Rh5 (33.Ke3 Kf5 Deflection (33...Kf5 Overloading)) 33...Nd5 (better 33...Ng2 34.Ke4 f5 35.Rf5 Re2 36.Kd3 Re3 37.Kc4 Ra7 38.Rh5 Rc7 39.Kb5-+) 34.Ke4 (34.Rd5 Kd5 35.Ra6 Rc3-+) 34...Nf6 (better 34...f5 35.Rf5 Re2 36.Kd3 Re3 37.Kc4 Rc3 38.Kb5 Ra7 39.Re5 de5 40.de5 Rb7 41.Ka4 Rb4 42.Ka5 Ra3) 35.Kd3 Nh5 36.Kc2 Kd5 (better 36...Nf4-+) 37.Ra5 Ke6?? (better 37...Kd4 38.Rh5 d5-+) 38.Rh5 (38.Ra7 Nf4-+) 38...Rg2 (38...f5 39.Kd3 Rb7 40.f4-/+) 39.Kd3=+ Rf2 (39...Rg3 40.Ke4=+) 40.Ke4 f6 (40...Re2 41.Kd3 Ra2 42.d5 Kf6 43.Rh7 Ra3 44.Ke4 Ra4 45.Ke3=) 41.Rh6 (better 41.d5 Kf7 42.Rh7 Kg6 43.Rd7+=) 41...Re2= 42.Kf4 d5 43.Rh7 Rd2 44.Ke3 (44.Ke3 Ra2 45.Rc7=). FeegLood (2560) - venerius (2240), Time forfeit, lichess.org, 2015.

4.e3 a5 5.b5 Nd7 6.Nf3 Nb8 7.d4 g6 (7...Ng6 8.c4+=) 8.c4 Bg7 9.Nc3 0-0 10.Be2 c5 11.0-0 cd4 12.Nd4 Nd7 (12...dc4 13.Bc4 Nd7 14.Qe2+=) 13.cd5+/- ed5 14.Qb3 (14.Rc1 Re8+/-) 14...Nc5+= 15.Qa2 b6 16.Nf3 (16.Rad1 Be6+=) 16...h6 (16...Be6 17.Rad1=) 17.Rfd1 Increasing the pressure on the isolated pawn on d5 17...Be6 18.Nd4 Bc8 (18...a4 19.Rab1=) 19.Rd2 (19.Nc6 Nc6 20.bc6 Bc3 21.Bc3 Be6+/-) 19...Qc7 (19...Be6 20.Rc1+=) 20.Rad1 (20.Bf3!?+/-) 20...Rd8 (20...Be6 21.Bf3 Rfd8 22.Nce2+=) 21.Bf3 (21.Nc6 Nc6 22.bc6 Bc3 23.Bc3 Qc6+=) 21...Bb7 22.Nde2 The pressure on the isolated pawn grows (22.Rc2 Be5+=) 22...Rac8 23.Nd5 (23.Ba1 a4+=) 23...Nd5 24.Bd5?? (better 24.Bg7 Ne3 25.Bb7 Nb7 26.fe3 Kg7 27.Nd4=) 24...Bd5-+ 25.Rd5 Rd5 26.Rd5 Bb2?? (better 26...Na4-+) 27.Qb2+/- Na4 28.Qd2 Nc3 29.Rd7?? (better 29.Nc3 Qc3 30.Rd8 Rd8 31.Qd8 (31.Qc3?? Rd1 32.Qe1 Re1) 31...Kh7 32.g3 Qa3 33.Qb6+/-) 29...Ne2-+ 30.Kf1 Qc1 31.Ke2?? (better 31.Qc1 Nc1 32.Rd6-+) 31...Rc2 32.Rd8 Kg7 33.h3 (33.Qc2 Qc2 34.Rd2 Qc5-+) 33...Rd2 34.Rd2 Qc4 (better 34...Qa3!? 35.f3-+) 35.Rd3 Qb5 36.f4 (36.e4 Qc6 37.Ke3 f5 38.ef5 Qg2 39.fg6 Qh3 40.Kd2 Qf5-+) 36...Qb2 (36...Qc6 37.Kf1-+) 37.Kf3 b5 (37...Qc1 38.Kg3-+) 38.g4 (38.Rd5 a4-+) 38...b4 39.ab4 a4 40.Rd4 (40.Rd5 a3 41.f5 a2-+) 40...a3 41.b5 a2 42.b6 (42.Ra4 Qb5 43.Ra7 Qf1 44.Kg3 a1Q 45.Ra1 Qa1-+) 42...Qb6 (42...a1Q 43.Ke4 Qh1 44.Ke5 Qb5 45.Kd6 Qhc6 46.Ke7 Qf6) 43.h4 (43.Rd1-+) 43...a1Q 44.h5 (44.Rd2 Qf1 45.Rf2 Qh3 46.Ke4 Qhe3 47.Kd5 Qbe6) 44...Qad4! 45.ed4 (45.ed4 gh5 Decoy) 45...Qd4 46.hg6 fg6 47.Kg3 g5 (47...Qe3 48.Kh2 Qf4 49.Kg2 Qg4 50.Kf1 Qe6 51.Kf2 h5 52.Kf3 g5 53.Kf2 g4 54.Kg3 Qe3 55.Kh2 Qf3 56.Kg1 h4 57.Kh2 h3 58.Kg1 Qg2) 48.f5 Qf4 49.Kg2 Kf6 50.Kh3 (50.Kg1 Qf3 51.Kh2 Qf2 52.Kh1 h5 53.gh5 g4 54.h6 g3 55.h7 Qf1) 50...Ke5 (50...h5 51.Kg2 h4 52.Kh1 Qf3 53.Kh2 h3 54.Kg1 Qg2) 51.Kg2 Qg4 52.Kh2 (52.Kf1 Qf3 53.Ke1 Kd4 54.Kd2 Qf2 55.Kd1 Kd3 56.f6 Qd2) 52...Qf5 (52...Ke4 53.f6 Kf3 54.f7 Qg2) 53.Kh1 (53.Kg1 Kf4 54.Kg2 Qc2 55.Kg1 Kf3 56.Kf1 Qd1) 53...Qg4 54.Kh2 Ke4 55.Kh1 Ke3 (55...Kf3 56.Kh2 Qg2) 56.Kh2 Kf2 57.Kh1 Qg2 (57...Qh5) 0-1. Jaymarc_Gutierrez (2610) - Mnyasta (2735), Rated bullet game, lichess.org, 2023.

4.e3 c5 5.Nf3 cb4 6.ab4 Nbc6 7.b5 Nb8 8.c4 Nd7 9.cd5 Nd5 10.Be2 Be7 11.0-0 0-0 12.Nc3 Bf6 13.Qb3 N7b6 14.Nd5 Nd5 15.Bf6 Nf6 16.d4 b6 17.Ne5 Bb7 18.Ra2 Qe7 19.Bf3 (19.Qa3 Qd8+/-) 19...Ne4 (19...Bf3 20.Nf3 Rfc8 21.Ne5+=) 20.Rfa1 Bd5 21.Qa3 Qa3 (21...Qe8!? 22.Be4 Be4+=) 22.Ra3+/- Rfc8 (22...Nd6 23.Bd5 ed5 24.Ra7 Ra7 25.Ra7 Nb5 26.Ra6+/-) 23.h3 (23.Be4!? Be4 24.f3+- (24.Ra7?? Ra7 25.Rd1 f6-+)) 23...Rc7+/- 24.Nd3 (24.Be4 Be4 25.f3+/-) 24...Rac8 (24...Nc3 25.Bd5 Nd5 26.Ra6=) 25.Be4 (better 25.Ra7!? Ra7 26.Ra7+-) 25...Be4+= 26.Ne5 (26.Nf4 Rc1 27.Rc1 Rc1 28.Kh2 Rc2+=) 26...f6= 27.Nf3 Rc1 28.Kh2 R1c2 (better 28...Ra1!? 29.Ra1 Rc7=) 29.Kg3+/- (29.Ra7?! Rf2 30.Kg3 Rcc2=) 29...Bf3 30.Kf3 Rb2 31.Ra7 Rcc2 (31...Rb5 32.g4 e5+/-) 32.Rf1 (better 32.Ra8 Kf7 33.R1a7 Kg6 34.Rg8 Rf2 35.Ke4+-) 32...Rb5 33.Re7 e5 (33...Rf5 34.Kg3+=) 34.Ra1+/- h5 (34...Ra5 35.Ra5 ba5 36.de5 fe5 37.Re5+/-) 35.Ra8 (35.Raa7 e4 36.Ke4 Rg5+/-) 35...Kh7+/- 36.Raa7 Kh6 (better 36...e4 37.Ke4 Rg5+/-) 37.Rg7+- Rbb2? (37...f5 38.Rge7 Ra5 39.Re6 Kg5+-) 38.Rh7 Kg6 39.Rag7 Kf5 40.g4 (40.Rh5?! Ke6 41.g4 ed4+/-) 40...Ke6 41.Re7 (better 41.Rd7 Rf2 42.Ke4 f5 43.gf5 Rf5 44.d5 Kf6 45.Rdf7 Kg5 46.Rf5 Kh4 47.Rfh5 Kg3 48.d6+-) 41...Kd6 (better 41...Kd5 42.Rd7 Kc4 43.Rh5 Rf2 44.Ke4 ed4 45.Rc7 Kb4 46.ed4 b5+-) 42.de5 (better 42.Rd7 Kc6 43.Rc7 Kb5 44.Rc2 hg4 45.hg4 Rc2 46.Rh5+-) 42...fe5+/- 43.Ke4 Rb4 44.Kd3 Rcb2 (44...Rf2 45.Rd7 Ke6 46.Rhe7 Kf6 47.Rf7 Ke6 48.Rf2 Kd7 49.g5 e4 50.Kc3+/-) 45.Rd7+/- Ke6 46.Rc7 (46.Rhe7 Kf6 47.Rf7 Ke6 48.Rde7 Kd6=) 46...R4b3 (46...e4 47.Kc3 hg4 48.hg4+=) 47.Rc3 (47.Ke4 Rb4 48.Kf3 hg4 49.hg4 e4 50.Kg3+-) 47...Rb4? (better 47...hg4 48.Rh6 Kf7 49.Rb3 Rb3 50.Kc4 g3 51.fg3 Re3+/-) 48.Rh5?? (better 48.e4 Kd6 49.Rh6 Kd7 50.Rh5 Rf2 51.Re5 Rf3 52.Kc2 Rf2 53.Kc1+-) 48…e4 0-1. HIALUPHARMpl (2605) - Mnyasta (2710), Rated bullet game, lichess.org, 2023.

4.a4 Bb7 5.c4 a5 6.e3 d6 7.Nf3 e5 8.Be2 f6 9.0-0 Ng6 10.d4 (10.d4 Be7 11.Qc2+=) 1–0. BeepBeepImAJeep (2545) – Montebaby, lichess.org, 2018.

4.e3 Bb7 5.Nf3 Ng6 6.Be2 f6 7.0-0 Be7 8.d4 0-0 9.a4 d5 10.c4 dc4 11.Nc3 Nd7 (better 11...Bb4!?+=) 12.Bc4+- Bd5?? (better 12...a6+-) 13.Nd5 ed5 14.Bd5 (14.Bd5 Kh8 15.Ba8 Qa8 16.Qc2+-) 1-0. DEFFM – GuestLCJM, freechess.org, 2021.

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 (8.Nf3 f6=) 8...h6 (8...Bd7 9.Nc3=) 9.Nf3 Qc7?? (9...dc4 10.Bc4 Bd7 11.Ne5+=) 10.Be2 (better 10.Be5 Qd8 11.Bb8+-) 10...Ng6 11.0-0 e5 12.d4 (12.b6 Qd6+=) 12...e4 13.Ne5 Ne5 14.de5 Be7? (better 14...dc4 15.Bc4 cb5+=) 15.cd5+- cd5 16.Qd5 Be6 (16...Bf5 17.Nc3+-) 17.Qe4 0-0 18.Nc3 (18.Bd4 Nd7+-) 18...g6 (18...Rd8 19.Bd3 g6 20.Be2+-) 19.Rd1 Bf5 (19...Rd8 20.Rd8 Bd8 21.Bf3+-) 20.Qd4 Bc5 (20...Be6 21.Bf3+-) 21.Qc4 (21.Qf4 Kh7+-) 21...b6 (21...Be6 22.Nd5 Qc8 23.Qf4+-) 22.Nd5 Qb7 23.Nf6 (23.Qh4 Be6 24.Qh6 Bd5+-) 23...Kg7 24.h3 (better 24.e6 fe6 25.Nd7 Kf7 26.Nf8 Kf8+-) 24...Nd7 (24...Be6 25.Qf4 Qe7+-) 25.Nd7 Bd7 (25...Be6 26.Qf4 Re8 27.Nf6+-) 26.Rd7! Qd7 Decoy theme: d7 (26...Qa8 27.Qc1 Kg8+-) 27.e6 Theme: Double Attack 27...Qd4 28.Bd4 Kh7 29.Bc5 bc5 30.e7 Re8 (30...Rg8 31.Qf7 Kh8 32.Bc4 Rg7 33.e8Q Kh7 34.Qeg8) 31.Qf7 Kh8 32.Qe8 Kh7 (32...Kg7 33.Qf8 Kh7 34.Qf7 Kh8 35.e8Q) 33.Qf7 (33.Qf7 Kh8 34.e8Q) 1–0. BeepBeepImAJeep (2605) – wow_dersin (1780), lichess.org, 2016.

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Ng6 8.c4 Be7 (8...dc4 9.Bc4 Nd7 10.Nf3=) 9.Nf3 (9.Bg7 Rg8 10.Bc3 dc4+=) 9...Bf6 (9...0-0 10.d4=) 10.Bf6+= Qf6 11.Be2 (11.d4 dc4 12.Bc4 0-0+=) 11...0-0 12.0-0 c6 (12...dc4 13.Qc2=) 13.d4 Bd7 14.Nc3 Rc8 (14...dc4 15.Bc4 cb5 16.Bb5 Bb5 17.Nb5+=) 15.c5 cb5 16.Bb5 (16.Qd2 b4 17.Na2 b3+=) 16...b6=+ 17.Bd7 Nd7 18.Qa4 (18.e4 bc5 19.ed5 Nf4 20.de6 Qe6=+) 18...Qe7 (18...Qd8 19.c6 Nb8 20.Nb5 Nc6 21.Ra1-/+) 19.Qa6 (better 19.e4=+) 19...Rb8?? (better 19...Qd8-/+) 20.c6+- Ndf8 (20...Nf6!? 21.Nb5 Qf8+-) 21.Nb5 f6? (21...Qe8 22.c7 Ra8+-) 22.c7 (22.c7 Re8 23.c8Q Rc8 24.Qc8+-) 1–0. BeepBeepImAJeep (2735) – speedcuber12 (2420), lichess.org, 2020.

4.a4 b6 5.e3 Bb7 6.c4 Nd7 7.Nf3 dc4 8.Bc4 Nd5 9.0-0 N7f6 (9...a6 10.d3+=) 10.d4 (10.d3 a6+=) 10...Bb4 11.Nbd2 0-0 12.Rc1 Bd2 (12...a6 13.Qb3=) 13.Qd2 Rc8 (13...a6 14.Bd3+=) 14.Ne5 c6 (14...Ne4!? 15.Qe2 Qg5+-) 15.bc6+- Bc6 16.Nc6 (16.Ba6 Qd6 17.Bc8 (17.Nc6?! Rc6 18.Ba3 Qa3 19.Rc6 Nb4+-) 17...Rc8 18.e4+- (18.Nc6?! Rc6 19.f3 Ne7+-; 18.Rc6?! Rc6 19.Nc6 Qc6+-)) 16...Rc6+- 17.Bd3 (17.Ba3 Ne7+-) 17...Rc1+= 18.Rc1 Qd7 (18...Qb8 19.g3+=) 19.a5 Rc8 20.ab6 (20.Rc8 Qc8 21.e4 Ne7+-) 20...Rc1+= 21.Qc1 ab6 22.h3 Qc7 23.Qb1 Nc3?? (23...Qc6 24.Ba1+=) 24.Qc2 (better 24.Qa1 Qd8 25.Bc3+-) 24...Nfd5 (24...Ncd5 25.Qc7 Nc7 26.e4+=) 25.e4 (better 25.Bh7 Kh8 26.Bd3+-) 25...Ne2?? (25...Nb4 26.Qd2 Nba2+-) 26.Qe2+- Nb4 (26...Nf4 27.Qf3+-) 27.Bc4 (better 27.Bb5 Qc2+-) 27...Qf4 (27...Nc6 28.d5 Na5 29.Ba2 ed5 30.Qd3+-) 28.g3 (28.d5!? e5 29.Bb5 h6+-) 28...Qc7 29.Kg2 (29.d5 e5+-) 29...h6 (29...Qc6 30.d5! ed5 31.Qg4+-) 30.Ba3 (better 30.d5!? ed5 31.ed5 Qc8+-) 30...Nc6 31.d5 ed5 32.Bd5 Ne7 33.Be7 Qe7 34.Qf3 (better 34.Qa6+-) 34...Qd6 (34...b5 35.Qb3 b4 36.f4+-) 35.Qf5 (35.Qf7 Kh7 36.Qg8 Kg6 37.Qe8 Kf6 38.Qf7 Ke5 39.Qf4 Kd4 40.Qe3 Ke5 41.Qc3) 35...b5 (35...Qe7 36.Qc8 Qf8+-) 36.Qf7 Kh7 37.Qf5 (37.Qg8 Kg6 38.Qe8 Kf6 39.Qf7 Ke5 40.Qf4 Kd4 41.Qe3 Ke5 42.Qc3) 37...Kh8 38.Qc8 Kh7 (38...Qd8 39.Qd8 Kh7 40.Bg8 Kg6 41.Qe8 Kf6 42.Qe6 Kg5 43.Qf5) 39.Bg8 Kg6 (39...Kh8 40.Bf7 Qf8 41.Qf8 Kh7 42.Qg8) 40.Qf5 1–0. BeepBeepImAJeep (2630) – theo91192 (2100), lichess.org, 2016.

4.a4 b6 5.e3 Bb7 6.c4 f6 7.Nf3 dc4 (7...a6 8.Nc3=) 8.Bc4+= Nd7 (8...Nd5 9.Nd4 Qd6 10.Qg4+=) 9.0-0+- Nc5 (9...Nd5!?+-) 10.d4+- Nd7 (10...Ne4 11.Be6 a6 12.Nbd2+-) 11.Be6 Nb8 (11...Ng6 12.Qb3 Bd6 13.Bf7 Kf8 14.Nbd2+-) 12.Qb3 (better 12.Nc3 Qd6 13.Qb3+-) 12...Nd5?? (12...Bd5 13.Bd5 Qd5 14.Qc2+-) 13.Nbd2 (13.Nc3 c6 14.bc6 Nc6 15.Bd5 Qd7+-) 13...Qe7?? (13...Qd6 14.Bf5 c6+-) 14.Bd5 c6 15.Ba3 cd5 (15...Qd7 16.Be6 Qc7+-) 16.Be7 Be7 17.Rac1 0-0 (17...Nd7+-) 18.Rc7 Bd6 19.Rb7 a6 20.Qd5 Kh8 21.Qd6 ab5 22.Qf8 1–0. BeepBeepImAJeep (2680) – theo91192 (2010), lichess.org, 2016.

4.a4 c5 5.e3 Nd7 6.Nf3 Nf6 7.c4 Ng6 8.Be2 b6 (8...Bd6 9.0-0=) 9.0-0 (9.a5 ba5 10.Qa4 Bb7+=) 9...Be7 (9...Bd6 10.d4=) 10.d4+= 0-0 11.cd5 ed5 12.Nc3 Be6 13.Ne5 cd4 (better Bd6 14.Ng6 fg6=) 14.Qd4?? (14.Ng6 fg6 15.Qd4 Bc5+=) 14...Rc8?? (better Bc5 15.Nc6 Bd4 16.Nd8 Bc3 (16...Rad8?! 17.ed4 Nf4 18.Rfe1=) 17.Ne6 Bb2 (worse 17...fe6 18.Bc3 Rac8 19.Bb4+=) 18.Nf8 Kf8-/+) 15.Bf3?? (better 15.Nc6 Qd7 16.Ne7 Ne7 17.Rfd1+=) 15…Bc5-+ (15...Bc5 16.Nf7 Rf7-+ (16...Bd4?! 17.Nd8 Bc3 18.Ne6 Bb2 19.Nf8 Kf8 20.Ra2=+; Kf7?! 17.Qd1-+; Bf7?! 17.Qd1-+)) 0-1. Bostonbliz (2610) - Agent071 (2600), Casual bullet game, lichess.org, 2022.

4.a4 c5 5.e3 Ng6 6.Nf3 Be7 (6...Nd7 7.c4=) 7.c4 (7.Bg7 Rg8 8.Bb2 Nd7+/-) 7...Bf6 (better 0-0=) 8.Be2?? (better 8.Bf6 Qf6 9.Nc3+=) 8...Bb2-+ 9.Ra2 Bf6 10.h4 (10.cd5 ed5 11.d4 c4-+) 10...Nh4 11.cd5 (11.Nh4 Bh4 12.Qc2 Nd7-+) 11...Nf3 (11...Ng2 12.Kf1 Nh4 13.Rc2-+) 12.Bf3 ed5 13.Nc3 Be6 14.Rc2 (14.d4 a6-+) 14...Nd7 (better a6!? 15.Rb2-+) 15.Nd5 Bd5 (15...Ne5!? 16.Nf6 Qf6 17.Rc3 Nf3 18.Qf3 Qf3 19.gf3-+) 16.Bd5 Rb8 17.Bf3 (17.Qf3 Qc7-+) 17...Qe7 (17...Ne5 18.Be4 c4 19.0-0-+) 18.a5 (18.d3 Ne5-+) 18...b6 (18...Ne5 19.Be2-+) 19.Ra2 (19.Bc6 Rd8-+) 19...0-0 (19...Ne5 20.Be4-+) 20.ab6 ab6 (worse 20...Rb6 21.Ra7 Rd8 22.Qb3-+) 21.Ra7 Qd6 22.Qa4 (22.Be4 h6-+) 22...Ne5 23.Qe4 (23.Be4 h6-+) 23...g6 24.Be2 Bg7 (better 24...Rfd8 25.Qc2 Nd3 26.Bd3 Qd3 27.Qd3 Rd3-+) 25.f4 Nd7 26.Bc4 (26.Qc6 Qc6 27.bc6 Nf6-+) 26...Nf6 27.Qc6 Qc6 28.bc6 Rbc8 29.Bb5 Nd5 30.0-0 (30.Rb7 Rfd8-+) 30...Nc7 31.Be2 b5 (31...Rfd8 32.Rf2-+) 32.Rb7 (32.f5 Be5 33.Rc1 c4-+) 32...b4 (32...Rfd8 33.Rd1-+) 33.Rc1 Ne6 34.Bc4 (34.Bf3 Rfd8 35.Rc2 Kf8-+) 34...Rc6 35.Bd5 (35.Be6 fe6 36.d4 Rfc8 37.Rc5 Rc5 38.dc5 Bc3-+) 35...Rcc8 36.g4 (36.Kf1 Rb8-+) 36...Rfd8 37.Bc4 (37.Be6 fe6 38.Rc2 Bf8-+) 37...Rc7 (37...Rd2 38.Be6 fe6 39.Rb4 cb4 40.Rc8 Bf8 41.Rb8-+) 38.Rc7 Nc7 39.Ra1 (39.Bb3 Bf8 40.Rd1 h5 41.gh5 gh5-+) 39...h5 (better 39...Ba1 40.d3 Nd5-+) 40.Ra7 Rd7 41.g5 (41.f5 Kh7 (worse 41...hg4 42.fg6 Kf8 43.gf7-+) 42.gh5 gh5-+) 41...Bf8 (41...Kf8 42.Bb5 Re7 43.Bc4-+) 42.Rb7 Re7 43.Kf2 Kg7 44.Kf3 h4 (better 44...Ne8!? 45.Rb5-+) 45.e4 (45.Kg4-+) 45…Ne6 (45...Ne6 46.Rb6 Nd4 47.Kg4 Re4-+) 0-1. Bostonbliz (2625) - martimhernandez (2640), Casual bullet game, lichess.org, 2022.

4.a4 Ng6 5.e3 Be7 6.Nf3 Bf6 7.d4 c5 8.Be2 0-0 9.0-0 Nd7 10.Nbd2 b6 11.c4 Bb7 12.a5 Rc8 13.ab6 ab6 (worse Qb6 14.dc5 Nc5 15.Bf6 gf6 16.Ra3+/-) 14.Ra7 Qc7 (14...Rc7 15.cd5 Bd5 16.Rc7 Qc7 17.Bd3=) 15.Qa1 (better 15.dc5!? bc5 16.Bf6 Nf6 17.Bd3+=) 15...Ra8=+ 16.Ra8 Ra8 17.Qb1 e5 18.de5 Nde5 19.Ne5 Ne5 (19...Be5 20.Be5 Ne5 21.Rd1=) 20.Rc1 (20.Rd1 Rd8=) 20...Rd8 Black prepares d4 21.h3 (21.cd5 Bd5 22.Ne4 Be4 23.Qe4 Qd6=) 21...h6 (21...d4 22.ed4 cd4 23.Rd1=) 22.Nf3 (22.cd5!? Bd5 23.Ne4 Be4 24.Qe4=) 22...d4=+ 23.Ne5 Be5 (23...Qe5 24.Bf1=+) 24.ed4 Bd4 25.Bd4 Rd4 26.Bf1 Qd6 (26...Be4 27.Qa1=+) 27.Qa1 (27.Re1 Qd7=) 27...Be4=+ 28.Qa7 g6 (28...Kh7 29.Re1 f5 30.Qa1=+) 29.Re1= Kg7 30.Re3 Bf5 31.Rf3?? (31.Be2 Re4 32.Re4 Be4 33.Qa1 Qd4=) 31...Be6?? (31...Rd1 32.g4 Qe6 33.gf5 Qc4 34.Kh2 Qf1 35.f6 Kg8 36.Qa8 Kh7 37.Rg3 Qf2 38.Qg2-+) 32.Re3?? (better 32.Qa1=) 32...Rd1-+ (worse 32...Bc4 33.Bc4 Rc4 34.Qa1 Qd4 35.Qf1-+) 33.Re6?? (33.Qa2 Qd4 34.Re6 fe6 35.Qe2-+) 33...Qe6 34.g3 (34.Qa2 Qe1 35.Qb2 Kh7 36.Kh2 Qf1 37.Qf6 Qc4 38.Kg3-+) 34...Qc4 (34...Qh3 35.Qf7 Kf7 36.f4 Rf1) 35.Qa1 (35.Kg2 Qf1 36.Kf3 Rd3 37.Kg4 Qe2 38.Kf4 Rd4) 35…Ra1 (35...Ra1 36.Kg2 Qf1 37.Kf3 Qd3 38.Kf4 Ra4 39.Ke5 Re4) 0-1. Bostonbliz (2625) - martimhernandez (2640), Casual bullet game, lichess.org, 2022.

4.c4 b6 5.e3= Bb7 6.Nf3 Nd7 7.d4 Nf6 8.Nc3 Qd7 (8...a6 9.a4=) 9.Qb3 (9.Ne5 Qd8 10.Be2+=) 9...0-0-0 (9...dc4 10.Bc4 Bf3 11.gf3=) 10.a4 (10.c5 Qe8+/-) 10...dc4 11.Bc4 (11.Qc4 Bf3 12.gf3+=) 11...Ned5 (11...Bf3!? 12.gf3 Ned5+/-) 12.a5 Nc3 13.Bc3 (13.Ne5 Qe8 14.Bc3 Nd5+/-) 13...Nd5 (13...Bf3 14.gf3 Nd5 15.Bd2+/-) 14.Bd2 g5 (14...Bd6!?+-) 15.ab6 ab6 16.Ne5 (16.Ng5?! Rg8 17.Nh7 Be7+/-) 16...Qe8 17.Nc6! Bc6 (17...Rd6 18.0-0+-) 18.bc6 Qc6 19.Bb5 Qb7 (19...Qd6 20.Qa4 c6 21.Bc6+-) 20.0-0 (20.Ba6 f5+-) 20...Bd6?? (better 20...Kb8+-) 21.Rfc1 (21.Ba6 Qa6 22.Ra6 Kb7+-) 21...f5 (21...Qb8 22.Bc6 Ne7+-) 22.Bc6 (better 22.Qa2 c5 23.Ba6 Qa6 24.Qa6 Kd7 25.Qb5 Ke7+-) 22...Qb8 23.Ra8 (23.Bd5?! ed5 24.Ra6 c5+-) 23...f4 (23...Qa8 24.Ba8 Rhg8+-) 24.e4 (24.Rb8 Kb8 25.Qa4 fe3 26.Qa8) 24...Ne7 (24...Qa8 25.Ba8 Ne7+-) 25.e5 (25.Qe6 Rd7 26.Qd7) 25...Nc6+- 26.Rb8 (26.Qe6 Kb7 27.Rb8 Nb8 28.ed6 Rd6 29.Qe4 c6 30.Qe7 Rd7 31.Qg5 Rhd8+-) 26...Nb8 (26...Kb8 27.Rc6 Be5 28.de5 Rd2 29.Rc7 Kc7 30.Qc3 Kb7 31.Qd2+-) 27.ed6 (27.Qb6 Kd7 28.Qb7 Rc8 29.ed6 Kd6+-) 27...Rd6 28.Bc3 (28.Qc4!? Rc6 29.Qb5 Rc1 30.Bc1 Rd8+-) 28...Rhd8 29.Re1 Kb7 (29...Nc6+-) 30.Re6 R6d7 31.Re5 (31.Qb1 Nc6 32.Qe4 Rd5+-) 31...g4 (31...Nc6 32.Rg5 Nd4 33.Bd4 Rd4 34.h3+-) 32.g3 (32.d5 c6 33.Ba5 Rd5 34.Qb6 Ka8+-) 32...f3 (32...fg3 33.hg3 Nc6 34.Rh5 Nd4 35.Bd4 Rd4 36.Rh7+-) 33.h3! h5 (33...gh3 34.Rh5 Decoy) 34.Rh5 gh3 35.Rh3 Re8 (35...Nc6 36.g4+-) 36.Rh4 Rde7 (36...Rf8 37.d5+-) 37.Kh2 Re2 (37...Rd7+-) 38.Kg1 Nc6?? (38...R2e7 39.Bb4 Rd7+-) 39.Rf4 (39.Qd5 R2e6+-) 39...Ra8 (39...Nd8 40.Rf3 Nc6 41.d5+-) 40.Rf3 Raa2 (40...Rae8 41.d5 Nd8 42.g4+-) 41.Kg2 Ne7 42.d5 1-0. ClayPigeons (2230) - orangad90 (2320), Rated Bullet game, lichess.org, 2019.

4.c4 Nf5 5.Nf3=.

4.e3 f6=.

4.h4 a6 5.e3=+.

4.h4 h6 5.h5 c5 6.a4 Nd7 7.c4 b6 (7...Nf5 8.e3=+) 8.e3= Bb7 9.Nf3 Qc7 10.Be2 e5 11.cd5 Nd5 12.Bc3 (12.a5 ba5 13.Nc3 Nb4=+) 12...Nc3 13.Nc3 e4 14.Nh4 Qe5 (14...Rd8 15.a5=+) 15.Qb3 (15.f4 Qe6=) 15...Bd6 16.Rc1 0-0 (16...Nf6 17.f4 ef3 18.Bf3=+) 17.g4 (better 17.Ng6!? Qg5 18.Nf8 Qg2 19.Rf1 (worse 19.Nd7 Qh1 20.Bf1 Rd8-/+) 19...Rf8 20.Qa2=+) 17...Qg5-/+ 18.Nf5 Bc7 (18...Be5 19.Qd1-/+) 19.Rg1 (19.Nd5 Be5 20.d3 ed3 21.f4 d2 22.Kd2 Bd5 23.Qd5 (23.fg5? Bb3 24.gh6 gh6-+) 23...Bf4 24.ef4 (24.Qd7? Rfd8 25.Qd3 Rd3 26.Bd3 Rd8-+) 24...Qf4 25.Kc2=) 19...Kh8 20.d3 (20.Qc2!? Rfe8 21.d4-/+) 20...ed3 21.Bd3 Ne5 22.Be2 g6?? (better 22...Nf3 23.Bf3 Bf3-+) 23.f4= Qh4?? (23...Qd8 24.Nh6 Nd3 25.Bd3 Qd3 26.Nf7 Kg7 27.h6 Kf6-/+) 24.Kd2 (24.Nh4!? Bd8 25.g5 hg5 26.fe5 g4 27.Rg4 gh5+-) 24...Qe7?? (better 24...gf5 25.fe5 Qf2-+) 25.Nh6 (better 25.Ne7 c4 26.Qb2 Rad8 27.Ke1+-) 25...c4 26.Qb2 Nd3?? (better 26...Qd8 27.Ke1 Qh4 28.Kd2 Rad8 29.Kc2 Nd3 30.Bd3 cd3 31.Kb1 Kh7+=) 27.Bd3+- cd3 28.Nd5 f6 (28...Be5 29.Ne7 Bb2+-) 29.Ne7 (29.Ne7 Bf4 30.ef4+-) 1-0. Bostonbliz (2625) - martimhernandez (2640), Casual bullet game, lichess.org, 2022.

4.a4 a6 5.e3 f6 6.c4 Bb4 7.Nf3 a5 (7...ab5 8.ab5 Ra1 9.Ba1=) 8.Be2 b6 9.0-0 0-0 10.d4 d6 11.Nc3 Nd7 (11...c5 12.bc6 Nc6 13.Rb1+=) 12.Nd2 (12.Na2 Rf7+-) 12...Bb7+= 13.Bf3 Bf3 14.Qf3 (worse 14.gf3 e5=+) 14...f5 15.Rfd1 Qe7 16.Rac1 Nf6 17.Nb3 Ng4 18.h3 Nf6 19.Na2 h6 (19...Ne4 20.Qe2=) 20.c5+= bc5 21.dc5 d5 22.Nb4 ab4 23.a5 The passed pawn on a5 will quickly become a dangerous weapon 23...Nh7 (23...Rfb8!? 24.b6 Ne4+-) 24.b6 Ng5 25.Qg3 f4 26.ef4 (better 26.Qg4!?+-) 26...Nf4= 27.Re1? (27.Rc2 Nfh3 28.Kh2 Nf4=) 27...Ne4 (27...Nfh3!? 28.gh3 Rf3 29.Qc7 Qc7 30.bc7 Rb3-+) 28.Re4 (28.Qf3!?=) 28...de4-/+ 29.Rc2 e5 30.b7 Rab8 (30...Ra6 31.Qg4 Rg6-+) 31.c6 Qe6 (31...Qd6 32.Kh2 Nd3=) 32.a6 (32.Nc5 Qd6 33.Kh2 Qc6 34.Be5+-) 32...Qb3?? (better 32...e3 33.a7 A) 33...Qb3 34.Be5 (34.ab8Q Rb8 35.Be5 g5 36.Bc7 Qc2 37.Bf4 e2+=) 34...Nh5 35.ab8R Rb8 36.Qg6+-; B) 33...e2-/+) 33.Qb3+- Kh8 34.a7 Nd3 35.ab8Q Rb8 36.Re2 Re8 1–0. BeepBeepImAJeep – Lerto (1995), lichess.org, 2016.

4.a4 d5 5.c4 f6 (5...d4 6.Nf3 e5 7.Qc2=+) 6.e3= e5 7.Nf3 (7.cd5 Qd5 8.Qc2 c6=) 7...c6 8.cd5 cd5 9.Be2 Be6 10.0-0 Bd6 11.d4 0-0 (11...e4 12.Nfd2=) 12.de5 fe5 13.Nc3 e4 14.Nd4 Qf6? (better 14...Bf7+=) 15.Ne6+- Qe6 16.Qd5 (16.Bg4 Qe5 17.Qd5 Kh8 18.Qe5 Be5+- (18...Ne5?? 19.Ne4 Ng4 20.Nd6+-)) 16...Qd5 17.Nd5 Nd7 18.Rfd1 Be5 19.Be5 Nde5 (19...Nge5 20.Rac1+-) 20.Nc7 (better 20.Nc3!? Rac8 21.Ne4 Rc2+-) 20...Rac8 21.Ne6 Rfe8 22.Nd4 Rc3 23.h3 Rec8 (23...Nd3 24.Nf5 Rf8 25.Nd6+-) 24.a5 Nd3 (24...Ne7 25.Ne6 Rc2 26.Kf1+-) 25.Nf5 (better 25.a6 b6 26.Nc6+-) 25...Nge5? (better 25...Rf8!? 26.Nd6 Rc2 27.Ne4 Nf2+-) 26.Nd6 (26.Ne7!? Kf8 27.Nc8 Rc8+-) 26...Rd8 27.Ne4 Rb3 (27...Rc2 28.Ng3 Rd7 29.f4+-) 28.f4 (better 28.Nc5 Rc3 29.Nd3 Nd3 30.Rd2+-) 28...Rb4 (28...Nf7+-) 29.Nc5! Rc8 (29...Nc5 A pinning theme 30.Rd8) 30.Nd3 Nd3 31.Bd3 Rc3 (31...Kf8 32.Kf2+-) 32.Kf2 (32.Rac1!? Rc1 33.Rc1 Ra4+-) 32...Rb2 33.Kf3 Kf7 (33...Rbb3 34.Ke4+-) 34.Rac1 Rbb3 (34...Rd2 35.Rc3 Rd1 36.Rc7 Ke8 37.Ke4+-) 35.Rc3 (better 35.Bc4 Rc4 36.Rc4 Rb5 37.Rd7 Kg6+-) 35...Rc3 36.a6 (better 36.Bh7!? Ke7+-) 36...ba6 37.ba6 Rd3 (37...g6+-) 38.Rd3 (38.Rd3 Ke6 39.Rb3+-) 1–0. BeepBeepImAJeep (2735) – Phoenix_Reborn (2060), lichess.org, 2015.

4.a4 f6 5.c4 Be7 6.e3 0-0 7.Nc3 d5 8.Nf3 c6 9.cd5 (9.d4 cb5 10.ab5 Rf7+=) 9...ed5 10.Be2 Bf5 (10...Bg4 11.0-0=) 11.0-0+= Nd7?? (better 11...Re8+=) 12.Nd4+- Nh4 13.bc6 bc6 14.g3 (14.Nc6 Qe8 15.Ne7 Qe7+-) 14...Bh3 (14...Qb6 15.gh4 Bh3 16.Rb1 Bf1 17.Qf1+-) 15.gh4 (15.Nc6!? Qe8 16.Ne7 Qe7 17.gh4 d4+-) 15...Bf1 16.Bf1 f5? (better 16...Qc8+-) 17.Ne6 (better 17.Nc6!? Qe8 18.Ne7 Qe7+-) 17...Qe8 18.Nf8 Nf8 19.Bg2 Bh4 20.Qb3 (better 20.Qf3 Rb8 21.Ba3+-) 20...Qg6? (20...Rb8 21.Qc2 Bf6+-) 21.Nd5! Kh8 (21...cd5 22.Qd5 A double attack) 22.Nf4 Qg4 23.h3 Qg5 24.Qf7 Ng6 (24...h6+-) 25.Qg7 (25.Bg7?!=) 1–0. BeepBeepImAJeep (2525) – arcymisio (1830), lichess.org, 2017.

4.e3 b6 5.Qf3 d5 6.c4 Nd7 (6...a6 7.a4=) 7.cd5 Bb7 8.e4 Nc5 (better is 8...ed5 9.ed5 Qe7 10.Qe3 Bd5=) 9.Bd3?? (better is 9.d4 Nd7 10.de6 fe6 11.Nd2+/–) 9...Nd3 10.Qd3 e5?? (10...ed5 11.e5 d4-/+) 11.Be5?? (better is 11.Qg3+/–) 11...Ne5-+ 12.Qg3 Ng6 13.Nf3 Bd6 14.e5 Bc5 15.0-0 0-0 16.d4 Bb4 17.a3 Ba5 18.Nbd2 Bd5 19.a4 Qe7 20.Rfd1 Bc3 21.Ra3 Bb4 22.Re3 h6 23.Rb1 Ba5 24.Nb3 Bb3 25.Reb3 Qe6 26.h4 Ne7 27.Nh2 Nf5 28.Qg4 Rad8 29.Rf3? Rd4 30.Qf5-/+ Qf5 31.Rf5 Rh4 32.Rf3?? Re4 33.Nf1 Re5 34.Rc1 c5 35.bc6-/+ Rc5 36.Rc5 bc5 37.Rf5 Bb6 38.a5+= Ba5 39.Rc5 Bb6 40.Rc4 Rc8 41.Nd2 Rc7 42.Ne4+= f5 43.Nd6 f4 44.Nb5 Rf7 45.c7+/– Bc7 46.Nc7 a5 47.Ne6+- f3 48.g3 Re7 49.Rc8 Kh7?? 50.Nf4 Re1 51.Kh2 Ra1 52.Ra8 a4 53.Ra7 a3 54.Ne6 Kg6 55.Ng7 a2 56.Ne6+- Kf5 57.Nd4 Ke4?! 58.Nc2 Rf1+/– 59.Ra2 Rf2 60.Kg1 Rg2= 61.Kf1 Rg3 62.Ra4 Kd3 63.Ne1 Kc3 64.Ra3 Kd2 65.Nf3 Kc1 66.Rc3 Kb2 67.Re3 h5 68.Kf2 Rg4 69.Re2 Kc1 70.Nh2 Rf4 71.Kg3 Rf5 72.Re1 Kc2 73.Kh4 Rb5 74.Nf3 Ra5 75.Rg1 Kd3 76.Ne5 Re5= 77.Rd1 Kc2 78.Rg1 Kd2 79.Rg2 Kd1 80.Ra2 Kc1 81.Ra6 Kd1 82.Rd6 Ke1 83.Ra6 Kf2 84.Ra1 Kf3 85.Rf1 Kg2 86.Rf6 Ra5. pinecrest1981 – TARKUS, Live Game Caissa's Web, 2006.

4.e3 c5 5.c4 (5.Nf3 d5=) 5...a6 6.a4 ab5 (6...d6 7.Nf3=) 7.ab5 Ra1 8.Ba1 f6 (8...d5 9.Nf3=) 9.Qh5+= d5 10.Bd3 f5 11.Nf3 Nd7 12.cd5 e5?? (better 12...Nf6 13.Bf6 Qf6 14.de6 Be6+-) 13.Bf5+- Nf6 (13...Qf6+-) 14.Bg6 Ke7 (14...hg6 15.Qh8 Bf5+-) 15.Qe5 (15.Qe5 Kd7 16.Bf5) 1–0. GuestYKFM – GuestLDLL, freechess.org, 2020.

4.e3 c6 5.a4 cb5 6.ab5 b6 7.Nf3 Bb7 8.Be2 d6 9.0-0 Nd7 10.Nd4 Nc5 11.Nc6 Bc6 12.bc6 Qc7 (12...d5 13.c4+/-) 13.Nc3 f6? (better 13...a5+/-) 14.d4+- Be7 (14...a5 15.dc5 bc5 16.e4+-) 15.dc5 bc5 16.Ra6 0-0 17.Nb5 Qc8 (17...Qb8 18.Qa1+-) 18.Nd6 Bd6 19.Qd6 Rd8 20.Qc5 Rd6 (20...Rd5 21.Qc4 Rb8+-) 21.Qd6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 c6 5.a4 cb5 6.ab5+- Bc5 (6...a5!?+-) 7.Bg7+- Rg8 8.Bb2 d5 9.Qh5 Qe7 (9...Qh4 10.Qh4 Nh4 11.g3+-) 10.Qh7+- Qf8 11.Qh5 Nd7 12.c4 Nb6 (12...dc4 13.Bc4 Be7 14.g3+-) 13.cd5 Nd5 14.Bc4 (14.Nc3 Nf6 15.Qe2 e5+-) 14...Bd7 (14...Be3 15.Bd5 Bh6+-) 15.Bd5+- ed5 16.Qd5 Bb6?! (16...0-0-0 17.Bf6 Re8+-) 17.Qb7 Rc8 18.Nc3 Qd6 (18...Rc7 19.Qe4 Qe7 20.Nf3+-) 19.Ne4 Qb4 (19...Qd3 20.Nf6 Ke7 21.Ng8 Rg8+-) 20.Nf6 Kd8 (20...Kf8 21.Nd7 Ke7 22.Nb6 Kd6 23.Qd5 Ke7 24.Qd7 Kf8 25.Qc8 Ke7 26.Ra7 Kd6 27.Qc6) 21.Qd7 (21.Ng8?! Qb2 22.Rd1 Qg7+-) 1–0. GuestKBLD – GuestMYHQ, freechess.org, 2020.

4.e3 Nh4 5.Nf3 b6 6.Be2 Ng2 7.Kf1 Nh4 8.Rg1 Ng6 9.c4 Bb7 10.Qc2 d6 11.Nc3 Nd7 12.d4 Qe7 13.Ke1 0-0-0 14.Kd2 Kb8 15.a4 e5 16.d5 e4 17.Nd4 Nc5 18.a5 Ka8 19.a6 Bc8 20.Nc6 Qd7 21.Nd8 Qd8 22.Ba3 Qh4 23.Bc5 dc5 24.Rh1 Qf2 25.Ne4 Qh4 26.Ng3 Be7 27.Raf1 Bf6 28.Nf5 Bf5 29.Rf5 Ne5 30.h3 g6 31.Rf4 Qg5 32.Rhf1 Bg7 33.Bg4 Re8 34.e4 Bh6 35.Kd1 Qh4 36.Bd7 Qh5 37.Bg4 Qh4 38.Rf6 Ng4 39.hg4 Qg4 40.R1f3 Re4 41.Rf7 Rd4 42.Ke1 Qg1 43.Ke2 Qg2 44.Rf2 Qg4 45.Kf1 Rd1 46.Qd1 Qd1 47.Kg2 Qg4 48.Kf1 1–0. Westthebest – vendra726, lichess.org, 2019.

4.a3 Nh4 5.Nf3 d6 6.Nh4 Qh4 7.e3 Nc6 8.d4 e5 9.de5 de5 10.Be2 Bf5 11.b5 Na5 12.Qa4 b6 13.Be5 Bd6?? 14.Bd6 cd6 15.0-0 0-0 16.Nd2 Be6 17.Rac1 Rac8 18.Qb4 Rc5 19.Nb3 Bc4?? 20.Nc5+- dc5 21.Qa4 Rd8 22.Bc4 Rd2 23.Bf7! Kf7 24.Qh4 h6 25.g3 Kg8 26.Rfd1 Rd1 27.Rd1 Kf7 28.Rd7 Kg6 29.Qg4 Kf6 30.Qg7 Ke6 31.Ra7 Kf5 32.Ra5! Ke4 33.Ra6 Kd3+- 34.Rb6 c4 35.Rc6 c3 36.Qh6 c2 37.Rc2! Kc2 38.Qd6 Kc3 39.b6 Kc4 40.b7 Kc3 41.b8Q Kc4 42.a4 Kc3 43.a5 Kc4 44.a6 Kc3 45.a7 Kc4 46.a8Q Kc3 47.Qdd8 Kc4 48.h4 Kc3 49.h5 Kc4 50.h6 Kc3 51.h7 Kc4 52.h8R Kc3 53.g4 Kc4 54.g5 Kc3 55.g6 Kc4 56.g7 Kc3 57.g8R Kc4 58.e4 Kc3 59.e5 Kc4 60.e6 Kc3 61.e7 Kc4 62.e8R Kc3 63.f4 Kc4 64.f5 Kc3 65.f6 Kc4 66.f7 Kc3 67.f8R Kc4 68.Qc6 1–0. ludice (1730) – pcc23, kurnik, 2011.

4.Qb3 e5 5.e3 a5 6.b5 a4 7.Qc2 a3 8.Bc3 d5 9.d4 e4 10.c5 Be7 11.Bb4 0-0 12.Ba3 f5 13.g3 b6 14.Bb4 c6 15.a4 cb5 16.Bb5 Ba6 17.Qe2 Bb5 18.Qb5 Na6 19.Nd2 Nb4 20.Qb4 bc5 21.dc5 Qa5?? 22.Qa5+/– Ra5 23.Nb3 Ra6 24.Ne2 Ne5 25.Nc3 Nd3 26.Ke2 Rd8 27.Nd4 g6?? 28.c6+- Bf6 29.Ncb5 Rc8+= 30.c7 Be5 31.Ne6?? Re6-+ 0–1. carocan (1715) – mrjb (2115), kurnik, 2011.

4.Qb3 f6 5.b5 Be7 6.e3 0-0 7.Nf3 c6 8.a4 cb5 9.ab5 a6 10.Be2 Kh8 11.0-0 e5 12.d4 e4 13.Nfd2 f5 14.Nc3 a5 15.b6 Nc6 16.Nd5 Bb4 17.Rfd1 d6 18.Ba3 Nge7? 19.Bb4 Nb4? 20.Nb4+- ab4 21.Ra8 Qb6 22.Rb1 Nc6 23.d5 Ne5 24.Qb4 Qc7 25.Nb3 f4 26.ef4 Rf4 27.Nd4 Rf7 28.Qb7! h6 29.Rc8 Kh7 30.Rc7 Rc7 31.Qc7 (31.Qc7 Kg6 32.Rb7 Nf3 33.Bf3 ef3 34.Qf7 Kg5 35.Nf3 Kg4 36.h3) 1–0. carocan (1745) – superos69, kurnik, 2011.

4.b5 f6 5.e3 d5 6.d4 dc4 7.Bc4 Bd6 8.Nf3 Qe7 9.0-0 Nd7 10.a4 Nb6 11.Bd3 Bd7 12.e4 c6 13.Nc3 e5 14.bc6 Bc6 15.d5 Bd7 16.a5 Nc8 17.Qb3 Bg4 18.Nd2 b6 19.Nb5 ba5 20.Nd6 Qd6 (20...Nd6 21.Ba3 Qd8 22.Bd6 Qd6 23.Bb5 Kd8 24.Ra5+/–) 21.Nc4 Qb8 22.Qa2 (22.Qc3 Nf4 23.Ba3 Nd3 24.Qd3 Qc7+/–) 22...Nf4+= 23.Qa3 (23.Qa4!? Bd7 24.Qc2+=) 23...Qb4= 24.f3 Bd7 Black prepares a4 25.Rfd1 (25.Rfb1 Qa3 26.Ra3 a4+=) 25...Qa3?? (better is 25...Nd3 26.Qd3 Nb6 27.Ne5 Qb2 (27...fe5?! 28.Be5 Qe7 29.Bb2+=) 28.Nd7 Nd7-/+) 26.Ba3+= Nd3 27.Rd3 Bb5 28.Rc3 a4 29.Rac1 Kf7 30.Ne3 Re8?? (better is 30...Rd8+=) 31.Rc7+- Kg6 32.Nf5 Rg8 33.Rc8! Rgc8 (33...Rac8 34.Ne7 Double attack (34.Ne7 Decoy); 33...Rgc8 34.Ne7 Double attack (34.Ne7 Decoy)) 34.Rc8 Rc8 35.Ne7 Kf7 36.Nc8 a6 (36...Bd3+-) 37.Nd6 Kg6 (37...Ke7 38.Nb5 Kd8+-) 38.Nb5 ab5 39.Kf2 (better is 39.d6 h6 40.d7+-) 39...Kf7 40.d6 (40.Ke2!? Ke8+-) 40...Ke8 41.Ke3 Kd7 42.Kd3 g6 43.Kc3 f5 44.Bc5 fe4 45.fe4 1–0. Peruhin,Anatoliy (1605) – Abdurahmanov,Afer (1680), Ulyanovsk RUS, Volga Open, 2014.

4.e3 e5 5.b5 Be7 6.Nf3 d6 7.Be2 (7.d4 e4 8.Nfd2 f5=) 7...0-0 8.0-0 a6 9.a4 c6 (9...Be6 10.Nc3=) 10.Nc3 Be6 11.d4 ed4 12.Nd4 d5 (12...ab5 13.ab5 Ra1 14.Qa1+=) 13.bc6 bc6 14.cd5 Bd5 15.Qc2 Bd6 16.Nd5 cd5 17.Qb3 Qh4 (17...Ra7!?+/–) 18.g3 Qe7 (better is 18...Qd8 19.Qd5 Ra7+-) 19.Qd5 Nd7 (19...Ra7 20.Nf5 Qb7 21.Qb7 Rb7 22.Bg7 Rd8+-) 20.Nf5 Qg5 21.f4 (21.Qd6?! Qf5 22.Rfd1 Nde5+-) 21...Nf4 (21...Ne7 22.fg5 Nd5 23.Nd6 Ne3+-) 22.ef4 Bf4 (22...Bc5 23.Qc5! Qg3 24.hg3 Nc5 25.Bg7 Rfd8+-) 23.Rf4 Nf6 (23...Nb6 24.Qa5 Rfe8+-) 24.Ne7 Kh8 25.Qg5 (25.Qg5 Rfc8 26.Bf6 Rc1 27.Rc1 Rg8 28.Rc8 Rc8 29.Qg7) 1–0. DEFFM – GuestMCKQ, freechess.org, 2017.

4.e3 f6 5.b5 d5 6.Nf3 c5 7.bc6 Nc6 8.cd5 Qd5 9.Nc3 Qa5 10.a3 Bc5 (10...Bd6 11.Bc4=) 11.d4+= Be7 12.Bd3 Bd7 13.0-0 0-0-0 (13...Rc8 14.Re1+=) 14.Ne4 (14.Qb3 Qh5+-) 14...Kb8 15.Qc2 (15.Rc1 Rhe8+/–) 15...Be8 (15...e5 16.Bc3 Qc7 17.d5+/–) 16.Bc3 Qc7 17.Rfb1 e5 18.Rb7?? (better is 18.Ba6! b6 19.Rc1+/–) 18...Kb7-+ (18...Qb7? 19.Rb1+-) 19.Rb1 Ka8 20.Bb4 Bb4 21.Rb4? (21.ab4 Qe7 22.Ng3 Qb7-+) 21...Qa5 (better is 21...f5 22.Rc4 Qb6-+) 22.Nc5?? (22.Rc4 Nce7 23.Ned2-+) 22...Nb4 23.ab4 Qb4 (better is 23...Qa1 24.Bf1 Bc6-+ (24...ed4?? 25.Qe4 Rd5 26.Qd5 Bc6 27.Qc6 Kb8 28.Qb7)) 24.Be4+- Kb8 25.Na6 1–0. GuestRQKK – GuestQNRC, freechess.org, 2017.

4.a3 b6 5.c4 Bb7 6.Nf3 Nc6 7.b5 Nce7 8.Be2 Nf5 9.0-0 Bd6 10.g4 Nfh4 11.Nh4 Nh4 12.Bg7 Rg8 13.Bb2 h5 14.h3 hg4 15.hg4 Qg5 16.f4 Qg6 17.Rf2 0-0-0 18.d3 f6 19.Nd2 Rh8 20.Nf3 Nf5 21.Nh2 Ne3 22.Qd2 Ng4 23.Ng4 Rhg8 24.Kf1 f5 25.Ke1 fg4 26.Kd1 g3 27.Rf1 Qh6 28.Kc2 g2 29.Rg1 Bf4 30.Qe1 Bg3 31.Qd2 Qd2 32.Kd2 Bh2 33.Bd4 Bg1 34.Bg1 Rdf8 35.d4 Bf3 36.Ke3 Be2 37.Ke2 d6 38.a4 e5 39.de5 Re8 40.Kf3 Re5 41.a5 ba5 42.Ra5 Re1 43.Ra7 Rg1 44.Ra8 Kb7 45.Rg8 c6 46.bc6 Kc6 47.Rg6 Kc5 48.Rg5 Kc6 49.Rg6 Kd7 50.Rg5 Kc6 51.Rg4 Kc5 52.Kf2 Rc1 53.Kg2 Rc4 54.Rg5 d5 55.Kf2 Rd4 56.Ke3 Re4 57.Kd3 Rd4 58.Kc3 Rc4 59.Kd3 Rh4 60.Rg8 Kd6 61.Rd8 Kc6 62.Rf8 d4 63.Rd8 Kc5 64.Rc8 Kd5 65.Rd8 Ke5 66.Re8 Kd5 67.Rd8 Ke5 68.Re8 Kd5 69.Rd8 ½–½. majida_2020 (1875) – vendra726 (1825), lichess.org, 2020.

4.a3 d6 5.d4 Be7 6.Nd2 0-0 7.c4 f5 8.Ngf3 Bf6 9.h4 Bh4? (better is 9...c5=) 10.Nh4+- Nh4 11.Qh5 g5? (better is 11...Ng6+-) 12.g3 1–0. Janek – Chris, internet, 2016.

4.a3 d6 5.Nf3 e5 6.h4 Bg4 7.h5 Bh5?? (better 7...Ne7 8.Be2 Nd7=) 8.Rh5+- Nd7 9.Bc4 Nf6 10.Rh1 d5 11.Ba2 Qd6 12.d4 0-0-0?? (12...e4 13.Ne5+-) 13.Nc3 (better 13.de5 Ne5 14.Be5+-) 13...Qe7 (13...e4 14.Nd2+-) 14.Kd2 (better 14.de5!? Ne5 15.Nb5 Nf3 16.Qf3 a6 17.Bf6 Qf6 18.Qf6 gf6+-) 14...ed4 (better 14...e4 15.Nh4 Nh4 16.Rh4 g5+-) 15.Kc1?? (better 15.Nd4 Ne5 16.Kc1+-) 15...dc3-/+ 16.Bc3 Qd7 (better 16...Ne4!? 17.Qe1 Nc3 18.Qc3 Kb8-/+) 17.Kb2 1-0. unjournakamura (2355) - HansenR (1990), Hourly Crazyhouse Arena, lichess.org, 2020.

4.b5 Nc6?? 5.bc6+- dc6 6.Nf3 b6 (6...f6 7.Bc4+-) 7.d4 (7.h4 Ne7+-) 7...Bb7 8.c4 Qd7 9.Nbd2 0-0-0 (9...Rd8 10.c5+-) 10.a4 (10.c5 e5+-) 10...a5 (10...Bb4 11.c5+-) 11.Be2 (11.c5 bc5 12.dc5 Qe7+-) 11...Bb4 12.0-0 (12.c5!? bc5 13.dc5 Nh4+-) 12...c5 13.Rc1 cd4 14.ed4 (14.Nd4?! c5+=) 14...Qe8 (14...Bc6 15.Ra1+-) 15.c5 bc5 16.Bb5 c6 17.Bc4 Nf4 (17...cd4 18.Bd4 c5 19.Be3+- (19.Bg7 Nf4 20.Bh8 Rd2+=)) 18.g3 Nh3 (18...Nd5+-) 19.Kg2 Bd2 (19...cd4 20.Kh3 e5 21.Qb3+-) 20.Qd2 (20.Kh3?! Bc1 21.Qc1 cd4 22.Bd4 f6+-) 20...cd4 21.Kh3 c5 (21...f6 22.Qa5 e5 23.Rfe1+-) 22.Qa5 Bf3 23.Qc5 Kd7 (23...Qc6 24.Ba6 Kb8 25.Qb4 Ka8 26.Rc6 Bc6+-) 24.Bb5 (24.Bb5 Bc6 25.Bc6 Kc8 26.Be8 Kb7 27.Qc7 Ka8 28.Bc6) 1–0. DEFFM – GuestWDZX, freechess.org, 2020.

4.Nf3 b6 5.Be2 Bb7 6.0-0 (6.a3 a5+=) 6...d6 (6...Bb4 7.Bg7 Rg8 8.Bc3=) 7.c4 Nd7 8.d4 Be7 9.Nc3 0-0 10.Re1 c5 11.bc5 bc5 12.d5 Nde5 13.de6 (13.Ne5 Ne5 14.f4 Ng6=) 13...fe6 14.Ne5 Ne5 15.Nb5 (15.f4 Nc6=) 15...a6=+ 16.Na3 Bh4 17.Qc2?? (better 17.Rf1-/+) 17...Bf2 18.Kh1 Be3 (better 18...Qh4 19.Be5 de5-+) 19.Be5 de5 20.Rad1 (20.Bd3 Rf2 21.Bh7 Kh8 22.Re3 Rg2-+) 20...Bd4 (better 20...Qg5 21.Bf1 Rf2 22.Re3 Bg2 23.Kg1 Rc2-+ (23...Qe3 24.Qf2 Qf2 25.Kf2 Bf1 26.Kf1+=)) 21.Qb3? (21.Bg4 Qe7 22.Rf1 Rf4 23.Rf4 ef4-+) 21...Bc6 (21...Bg2!? 22.Kg2 Qh4 23.Qg3 Rf2 24.Kh1 Qe4 25.Bf3 Qf3 26.Qf3 Rf3 27.Nc2-+) 22.Bf3 (22.Qh3 Qd6 23.Rf1 Rab8-+) 22...Bf3 23.Qf3 (23.gf3 Qf6 24.Rd3-+) 23…Rf3 (23...Rf3 24.gf3 Qa5-+) 0–1. Markzela (1740) – hogs4u (1745), lichess.org, 2020.

4.Nf3 Nc6 5.b5 Nb4? 6.c4+- d5? (better is 6...e5 7.a3 e4 8.ab4 ef3 9.Qf3 f6+-) 7.a3 dc4 (7...Nc6 8.bc6 bc6 9.Nc3+-) 8.ab4 Bb4 9.Bg7 Rg8 10.Bc3 Bc3 11.Nc3 (worse is 11.dc3 Qd1 12.Kd1 Ne7+-) 11...Bd7 12.Bc4 Qf6 13.Ne4 Qf5 (13...Qe7 14.g4+-) 14.d3 0-0-0 (14...h5 15.Nd4 Qe5+-) 15.Ra7 c6 16.Qa1 cb5 (16...Be8 17.Qa5 Rf8 18.Ra8 Kd7 19.Qd8) 17.Ra8 Kc7 18.Qa5 b6 19.Qa7 Kc6 20.Nd4 1–0. Fritz11 – jumbo, casual, 2013.

4.Nf3 Nc6 5.b5 Nce7 6.d4 d5 7.c4 c6 8.cd5 cd5 9.Be2 Nf5 10.0-0 Bd6 11.a4 0-0 12.Ba3 b6 13.Bd6 Nd6 14.Nc3 Ne4 15.Rc1 Nc3 16.Rc3 Bb7 17.Bd3 Rc8 18.Qc2 Rc3 19.Qc3 Qc8 20.Qb2 Qd7 21.Rc1 Rc8 22.Bg6 hg6 23.Ne5 Rc1 24.Qc1 Qc8 25.Qd1 Qc3 26.h3 g5 27.Qf3 f6 28.Ng4 f5 29.Ne5 Qc1 30.Kh2 f4 31.Qg4 Bc8 32.Qg5 fe3 33.fe3 Qf1 34.Qd8 Qf8 35.Qf8 Kf8 36.Nc6 a6 37.Na7 Bb7 38.ba6 Ba6 39.Nb5 Bb5 40.ab5 Ke7 41.g4 Kf6 42.Kg3 e5 43.de5 Ke5 44.Kf3 d4 45.ed4 Kd4 46.h4 Kc5 47.g5 Kb5 48.h5 Kc4 49.h6 gh6 50.gh6 b5 51.h7 b4 52.h8Q b3 53.Qb2 Kb4 54.Ke3 Kc4 55.Qd4 Kb5 56.Qc3 Ka4 57.Qb2 Kb4 58.Kd3 Ka4 59.Kc3 Kb5 60.Qb3 Kc5 61.Qe6 Kb5 62.Qe5 1–0. Chess4Win (1710) – espressoo (1725), lichess.org, 2020.

4.Nf3 Nc6 5.b5 Nce7 6.Be2 a6 7.Nc3 ab5 8.Nb5 Nc6 9.d4 Be7 10.d5 Nb8 11.de6 fe6 12.Bg7 Rg8 13.Bb2 d5 14.0-0 c6 15.Nc3 Bd7 16.e4 Bf6 17.ed5 cd5 18.Rb1 Rf8 19.Re1 Kf7 20.Bd3 Nc6 21.Ne2 Bb2 22.Rb2 Ra7 23.c4 dc4 24.Bc4 Nce5 25.Ne5 Ne5 26.Bb3 Bc6 27.Ng3 Kf6 28.Nh5 Kf5 29.Re5 Ke5 30.Re2 Kf5 31.Qc2 Kg5 32.Re5 Rf5 33.Rf5 ef5 34.Ng3 Qf6 35.h4 Kh4 36.Nf5 Kg5 37.Ng3 h5 38.Qc5 Kg4 39.Qh5 Kf4 40.Ne2 Ke4 41.Qg4 Kd3 42.Bc4 Kc2 43.Nd4 Kc3 44.Ne2 1–0. Chess4Win (1630) – Ant59 (1670), lichess.org, 2019.

5.a3 c5 6.bc5 Bc5 7.d4 Be7 8.Bd3 a6 9.c4 b6 10.0-0 Bb7 11.Nbd2 d5 12.Qb3 0-0 13.cd5 Bd5 14.Bc4 b5 15.Bd5 Qd5 16.Qd5 ed5 17.Rac1 Nd7 18.Nb3 (18.h4!?=) 18...Nb6+= 19.Nc5 Nc4 20.Rc2 Rfc8 21.Rfc1 Rc6 22.Nd3 Rac8 Attacks the isolani on a3 23.h3 Bd6 24.g3 Ne7 25.Nd2 (25.Ra1 Kf7-/+) 25...R6c7 (25...Nb2!? 26.Rc6 Nc6 27.Nb2 Ba3 28.Rc2-+) 26.Nc4 bc4 27.Nb4 Bb4 (27...a5!? 28.Na2 Rb7-/+) 28.ab4+= Rb7 29.Bc3 Nc6 30.Rb1 Rcb8 31.Rcb2 Rb5 32.Kg2 Kf7 33.f4 Ke6 34.Kf3 g6 35.g4 Ne7 (35...f5!?-/+) 36.Ra1+= R8b6 37.Rba2 Nc6 38.Ra6 Nb4? (better is 38...h6+=) 39.Rb6+- Rb6 40.Bb4?? (better is 40.Rb1+-) 40...Rb4+= 41.Ra6 Kf7 42.Ra7 Kg8 43.Ra8 (43.Ra5!?+/–) 43...Kf7= 44.Ra7 Ke6 45.Ra6 Kf7 46.Ra7 ½–½. Fournier,Frederic (1990) – JAGGER (1725), ChessOK.com, 2013.

6.Be2 0-0 7.0-0 a5 8.ba5 d5 9.c4=.

6.Be2 0-0 7.0-0 a6 8.c4 b6 9.Nc3 Bb7 10.d4 Nc6 11.d5 (11.Bd3 f5+=) 11...Nce5 12.Ne5 fe5 (12...Ne5 13.f4 Nf7 14.e4+=) 13.Bg4 (13.de6 de6 14.Bd3 Rf6+/–) 13...Bc8 (13...ed5 14.Nd5 d6 15.Qd3+=) 14.f3 (14.de6 de6 15.Qd8 Rd8+/–) 14...Bf6 (14...a5 15.de6 de6 16.b5+=) 15.Ne4 (better is 15.de6 de6 16.Ne4+/–) 15...ed5?? (better is 15...Bb7+/–) 16.Qd5+- Kh8 17.Qa8 Bg5 18.Rae1 d6 (18...Bh4 19.Rd1+-) 19.Qc8 Bh4 (19...Be3 20.Re3 Qc8 21.Bc8 Rc8 22.Rd1+-) 20.Qd8 Rd8 21.g3 (21.Rd1 Be7+-) 21...Be7 22.f4 ef4 23.ef4 Rf8 (23...a5 24.Ng5 Bg5 25.fg5 ab4 26.ab4+-) 24.h4 Bd8 25.h5 Ne7 26.h6 Kg8 27.Be6 Rf7 28.hg7 (28.hg7 Nc6 29.Bf7 Kf7 30.Ng5 Bg5 31.fg5 Kg6 32.g8Q Kh5 33.Rf4 Nb4 34.Rh4) 1–0. Janek – Vassileos, internet free game, 2017.

6.Be2 0-0 7.0-0 f5 8.Nc3 Bf6 (8...d5 9.d4=) 9.d4+= a6 10.d5 e5 (10...d6 11.de6 Be6 12.Nd4 Bd4 13.ed4+=) 11.d6+/– cd6 12.Qd6 b5?? (better is 12...e4 13.Nd2 Nc6+/–) 13.Qd5+- Kh8 14.Qa8 Qc7 15.Nd5 Qc2 16.Qb8 Qb2 17.Rac1 Bb7 18.Qb7 Qe2 (18...e4 19.Rc8 ef3 20.Bf3+-) 19.Qd7 e4 (19...Qd3 20.Nf6 Qd7 21.Nd7+-) 20.Nf6 ef3 (20...Qb2 21.Nd4 Ne5+-) 21.Rc7 Rg8 (21...Qf2 22.Kf2 Ne7 23.Qe7 Rg8 24.Ng8 Kg8 25.Qg7) 22.Qg7! Rg7 (22...Rg7 23.Rc8 Mate attack) 23.Rc8 Rg8 (23...Nf8 24.Rf8 Rg8 25.Rg8) 24.Rg8 (24.Ng8?! fg2 25.Rfc1 f4+/–) 1–0. Janek – Vassileos, internet free game, 2017.

6.Be2 0-0 7.0-0 f5 8.c4 b6+=.

6.Be2 0-0 7.0-0 f5 8.d4 Bf6 (8...a5 9.b5+=) 9.c4 a6 10.Nc3 (10.Qd3 d6+=) 10...b6 11.d5 (11.Bd3 Bb7+=) 11...e5 (11...Bb7 12.Qb3+=) 12.d6+/– c6 (12...Bb7 13.dc7 Qc7 14.Nd5+=) 13.Nd5! cd5?? (better is 13...Kh8 14.Nc7 Ra7+/–) 14.Qd5+- Kh8 15.Qa8 Nc6 16.b5 ab5 17.cb5 Na5 18.Rac1 Bb7 (18...Nb7 19.Rc2+-) 19.Qd8 Rd8 20.Rc7 Bf3 (20...Bd5 21.Nd2+-) 21.gf3 (21.Bf3 e4 22.Bf6 gf6+-) 21...e4 (21...Nb3 22.Bc3+-) 22.Bf6 (22.Rb1 Bb2 23.Rb2 ef3 24.Bf3 Ne5+-) 22...gf6 23.Rfc1 (23.fe4 fe4 24.f3 ef3 25.Bf3 Kg7+-) 23...Ne5 24.f4 (24.Rc8 Rc8 25.Rc8 Kg7+-) 24...Nd3 (24...Nf7 25.Rd1+-) 25.Bd3 ed3 26.Rd1 Nb3 (26...Kg7 27.Rd3 Kf7 28.Kf1+-) 27.Rd3 Nc5 28.Rd5 Kg7 29.Rf5 Kg6 30.Rfc5 bc5 31.Rc5 Kf7 (31...Ra8 32.f5 Kg5 33.b6 Ra3 34.Rb5+-) 32.f5 Ra8 (32...Rb8 33.a4 Rb6 34.Rd5+-) 33.b6 Ra3 (33...Rb8 34.Rb5 h5 35.a4+-) 34.Rc7 Ra1 35.Kg2 Rb1 36.b7 Rb6 (36...h6 37.Rd7 Ke8 38.Rh7+-) 37.Rd7 Ke8 38.Rh7 Kd8 39.Rc7 (39.Rc7 Rb5 40.h4 Rb3 41.h5 Rb2 42.h6 Rb7 43.Rb7 Kc8 44.Rc7 Kd8 45.h7 Ke8 46.h8Q) 1–0. Janek – Ginko, internet, 2018.

4.a3 d5!? 5.Nc3 Be7=.

4.a3 d5 5.ed5 ed5 6.Qe2 Qe7 7.Qe7 Ne7=.

4.a3 Nh4 5.g3+/– Ng6 6.Nf3 h5 (6...Nc6 7.Be2+/–) 7.h4 Nc6 8.Bg2 d6 9.0-0 Bd7 (9...a5 10.b5 Nce5 11.a4+/–) 10.Nc3 (10.d4 Be7+/–) 10...Qe7 (10...Be7 11.d4+=) 11.d4+/– 0-0-0 (11...Qd8 12.Bc1+/–) 12.b5 Nb8 (better is 12...Na5!?+/–) 13.a4 f5? (13...Qe8+-) 14.ef5 ef5 15.Nd5 Qf7 Black prepares f4 (15...Qe8 16.Re1 Ne7 17.Ng5+-) 16.Ng5 Qg8 17.Re1 f4 (17...c6 18.b6 a6 19.c4+-) 18.Qd2 fg3 (18...c6 19.Qa5 cd5+-) 19.Qa5 (19.Qa5 gf2 20.Kf2+-) 1–0. miec – hitechse, internet, 2009.

4.b5 d6 5.Nf3 e5 (5...a6 6.Be2=) 6.d4+= Bg4 7.de5. DEFFM – GuestVPYY, freechess.org, 2018.

4.c4 a6 5.a4 (5.Nf3 Nc6=) 5...c5 (5...d5!? 6.ed5 ed5 7.Qe2 Be6+=) 6.bc5+= Nc6 (6...e5 7.d4+=) 7.d4 Qc7 (7...e5 8.Nf3+=) 8.d5 (8.e5!?+/–) 8...Nce5 (8...Nb4 9.Nf3=) 9.Nf3= f6 (9...Bc5 10.Ne5 Ne5 11.Be2=) 10.Ne5+= Ne5 (10...fe5 11.d6 Qc5 12.Ba3+=) 11.Qh5+/– Ng6 (11...Kd8 12.Be5 fe5 13.Qg5 Ke8 14.Nd2+=) 12.d6 White prepares e5 12...Bd6? (better is 12...Qc6 13.Nc3 Kd8+-) 13.cd6+- Qd6 (13...Qb6 14.Bc3 Qd6 15.Nd2+-) 14.e5! Qe7? (14...fe5 15.Be2 Decoy) 15.ef6 (15.Bd3 f5+-) 15...gf6 16.Bd3 (16.Bd3 Rg8 17.Nd2+-) 1–0. GuestTTSD – GuestMGDX, freechess.org, 2018.

4.c4 d5 5.ed5 ed5 6.Qe2 Be6 7.cd5 Qd5 8.Nc3=+.

4.c4 d5 5.ed5 ed5 6.Qe2 Be6 7.cd5 Qd5 8.Nf3+=.

4.c4 f6 5.c5 b6 6.cb6 ab6 (worse is 6...Bb4 7.Qb3 Nc6 8.Bb5+=) 7.Ba3 (7.a3!?=) 7...Bb7-/+ 8.d3?? (8.Qc2 Na6-/+) 8...Be7 (8...Ra3!? 9.Na3 Bb4 10.Ke2 Ba3 11.Qa4-+) 9.Nf3? (9.Qb3 0-0-/+) 9...0-0?? (9...Ra3 10.Na3 Bb4 11.Nd2 Ba3 12.Be2-+) 10.Be2? (10.Qb3 f5 11.Nbd2 Nc6-/+) 10...Nf4?? 11.0-0 Ne2 12.Qe2-/+ Nc6 13.b5 Ba3-/+ 14.Na3 Ra3 15.bc6 Bc6 16.Nd4 Bb7 17.Nc2 Ra5 18.d4? Ba6-+ 19.Qg4 Bf1 20.Kf1 Rg5 21.Qh3 Qb8 22.Ne3 Qb7 23.Ng4 Qe4 24.f3 Qd4 25.Re1 Qc4 26.Kg1 Qa2 27.Qg3 Qc2 28.h4 Rg6 29.h5 Qc5 30.Kh1 Qh5 31.Kg1 Qc5 32.Re3 Qc1 33.Re1 Qc5 34.Kf1?? e5 35.Qh3 Qb5 36.Kg1 d5 37.Nf2 Qc6 38.g4 Rh6 39.Qg2 Qc3 40.Rf1 Rg6 41.Nd1 Qc5 42.Rf2 f5 0–1. pinecrest1981 – TARKUS, Caissa's Web, 2004.

4.Nf3 d6 5.b5 e5 6.Bc4 Be7 (6...Nf4 7.g3 Be6 8.Be6 Ne6 9.0-0=) 7.d4+= 0-0 8.de5 de5 9.Qd8 Rd8 10.Ne5 (10.Be5 Ne5 11.Ne5 Bf6+=) 10...Bb4 11.Ke2 Ne5 12.Be5 Re8 13.Rd1 (worse 13.Bc7 Re4 14.Kd3 Re7-/+) 13...Bg4 14.f3 Bh5? (better 14...Re5 15.Rd8 Bf8 16.fg4 Re4 17.Kd3 Re7+= (17...Rg4? 18.Nd2+-)) 15.Bc7+- a6 (15...Re4 16.Kf1 Nd7 17.Bd5+- (17.fe4?! Bd1 18.Nc3 Bg4+/-)) 16.Rd5 Bg6 17.Kf1 ab5 (17...Kf8 18.b6+-) 18.Rb5 (18.Bb5?! Rc8 19.c3 Rc7 20.cb4 Rc1 21.Kf2 Na6 22.Ba6 ba6+-) 18...Nc6 19.Rb7 Rac8 20.Bb5 Re6 (20...Nd8 21.Rb8 (21.Be8?! Nb7 22.c3 Be7+/-) 21...Nc6 22.Bc6 Rb8 23.Be8 Re8 24.c3+-) 21.a4 Nd4 (21...Bc5 22.Nc3+-) 22.Bd7 Nc2 1-0. DEFFM – GuestVLHT, freechess.org, 2021.

4.a3 d6 5.e3 c6 6.c4 Nd7 7.d4 Nf6 8.Bd3 Be7 9.Nbd2 b6 10.0-0 Qc7 11.Rc1 Qd7 12.Qc2 Bb7 13.Ne4 Rc8 14.Nf6 Bf6 15.Qb3 Qe7 16.Rfd1 Nh4 17.Nh4 Bh4 18.g3 Bf6 19.d5 (19.c5 0-0+=) 19...e5 (19...cd5 20.Bf6 Qf6 21.Qa4 Bc6 22.Qa6+= (worse is 22.Qa7 dc4 23.Qa6 0-0 24.Qc4 Qf3-/+)) 20.dc6 Bc6 21.Qc2 Bf3 22.Rd2 Qb7 23.e4?? (23.Qa4 Ke7 24.Qb3+=) 23...Bh5?? (better is 23...Bg5-/+) 24.Be2 (24.Qa4!? Ke7 25.c5 bc5 26.Ba6+/–) 24...Bg6 25.f3 Bg5 26.Rd6 Bc1 27.Qc1 Qc7 (better is 27...f6=) 28.Be5+- Qe7 29.Rd5 (29.Bg7?! Rg8 30.Rg6 hg6=) 29...f6 30.Bd6 Qe6 (better is 30...Qd7!?+/–) 31.c5+- Be4 (31...Kf7+-) 32.fe4 Qe4 33.Qd2 (33.Rd1 Qe2 34.Re1 Qe1 35.Qe1 Kf7 36.Qe7 Kg6 37.Qe4 Kh6+-) 33...Qb1 (33...Qe6 34.Bh5 g6 35.Rd3+-) 34.Kf2 Qe4 (34...g6 35.Ba6 Kf7 36.Bf4+-) 35.Bf3 (35.Bd3 Qd3 36.Qd3 a6+-) 35...Qe6 36.Rd3 Kf7 (36...bc5 37.Re3 Kf7 38.Re6 Rce8 39.Re8 Re8 40.Qd5 Re6 41.Bh5 g6 42.Qb7 Kg8 43.Qc8 Re8 44.Qe8 Kg7 45.Qf8) 37.Bd5 Qd5 38.Rd5 Rhe8 39.Rd3 bc5 40.bc5 Re6 (40...Kg8 41.Qa2 Kh8 42.Re3+-) 41.Re3 Rce8 42.Re6 Re6 43.Qd5 g6 44.c6 (44.Qb7 Kg8 45.Qc8 Re8 46.Qe8 Kg7 47.Qf8) 44...f5 (44...h6 45.c7 a6 46.c8Q g5 47.Qce6 Kg6 48.Qf7) 45.c7 Kf6 46.Qe6! Ke6 47.c8Q Kd6 48.Ke3 Ke5 49.Qc3 (49.Qh8!? Ke6+-) 49...Ke6 50.Kf4 h6 51.Qc6 Kf7 52.Ke5 g5 53.Qh6 f4 54.gf4 (54.Qh7 Ke8 55.Ke6 g4 56.Qe7) 54...gf4 (54...g4 55.Qh7 Kf8 56.Ke6 g3 57.Qf7) 55.Qf4 (55.Qh7 Kf8 56.Ke6 f3 57.Qf7) 55...Ke7 56.Qf6 (56.Qf5 Kd8 57.Kd6 Ke8 58.Qf6 a6 59.Qe7) 56...Kd7 57.Kd5 Kc7 58.Kc5 Kb7 59.Kb5 (59.Qe7 Ka6 60.h4 Ka5 61.Qa7) 59...a6 60.Qa6 (60.Kc5 a5 61.Qe7 Kc8 62.Kc6 a4 63.Qe8) 60...Kc7 61.h3 (61.Qe6 Kd8 62.Qf7 Kc8 63.Kc6 Kd8 64.Qd7) 61...Kd7+- 62.h4 Ke7 63.h5 Kf7 64.Qg6 (64.h6 Ke7 65.h7 Kf7 66.h8Q Ke7 67.Qhf6 Kd7 68.Qac6) 64...Kf8 (64...Ke7 65.h6 Kd7 66.h7 Ke7 67.h8Q Kd7 68.Qhe8 Kc7 69.Qgc6) 65.h6 Ke7 66.h7 Kd7 67.h8Q Ke7 68.Qhh7 (68.Qhe8) 68...Kf8 (68...Kd8 69.Qgg8) 69.Qgg8 (69.Qhf7) 1–0. Fournier,Frederic (1610) – norating, Active, 2006.

4.a3 f6 5.e3 Be7 6.h4 0-0 7.h5 Ne5 (7...Nh8 8.h6 g6 9.c4=) 8.Ne5+= fe5 9.h6 g6 10.Be5 d6 11.Bg7 Rf7 12.Nc3 c6 13.b5 e5 14.d4 Nd7 (14...Qa5!? 15.Qd2 ed4 16.Bd4 d5+/–) 15.de5+- Ne5 16.Be5 de5 17.Qd8 Bd8 18.Bc4 cb5 19.Nb5 Kf8 20.Bf7 Kf7 21.e4 Be6 22.Nd6 Kg8 (22...Ke7 23.Nb7 Bb6 24.c4+-) 23.Nb7 Bb6 24.a4 Rb8 25.Nd6 Ba5 (25...Rd8 26.Rd1+-) 26.Ke2 Rf8 (26...Bc7 27.Rhd1+-) 27.Rhd1 Bb6 28.f3 Bd4 29.Rab1 Ba2 (29...Rd8 30.Nb5 Ba2 31.Rbc1+-) 30.Rb7 a6 31.Rg7 Kh8 32.c4 a5 (32...Rf6 33.Rc7 Kg8+-) 33.Kd3 Bb3 (33...Bc5 34.Nf7 Rf7 35.Rf7 Kg8 36.Rg7 Kf8 37.Rh7 Kg8+-) 34.Rb1 Ba4 35.Nf7 Rf7 36.Rb8 Rf8 (36...Be8 37.Re8 Rf8 38.Rf8) 37.Rf8 1–0. Trkn – guest1751, ICC, 2004.

4.e3 Nc6 5.b5 Nce7 6.Bd3 (6.Nc3 a6+=) 6...a6+= 7.ba6 Ra6 (better is 7...ba6!? 8.Nc3 Rb8+=) 8.Ba6+- ba6 9.0-0 Nf5 (9...Bb7 10.d3+-) 10.d3 Bd6 (10...Bc5 11.e4 Nfh4 12.Nbd2+- (12.Bg7?! Rg8 13.d4 Bd6=)) 11.Nbd2 Bb7 (11...0-0 12.e4 Nfh4 13.Rb1+-) 12.e4 Nfh4 13.Rb1 Nf3 14.Qf3 (worse is 14.gf3 Bh2 15.Kh1 Qh4 16.f4 Nf4 17.Bf6 gf6 18.Qh5 Qh5 19.Rfe1 Bg3 20.Kg1 Qh2 21.Kf1 Qf2) 14...Be5 (14...0-0 15.Bg7! Be4 16.Ne4 Kg7+-) 15.Be5 Ne5 16.Qg3 Qf6 (16...Bc6 17.Qe5 0-0 18.Qa5+-) 17.Rb7 0-0 18.Rc7 d5 (18...h5 19.Nf3 Nf3 20.Qf3+-) 19.Re1 d4 (19...Ng6 20.ed5 ed5 21.Nf3+-) 20.Nb3 a5 (20...h5 21.Rc5 Ng6 22.e5+-) 21.Nd4 Rb8 (21...Ng6 22.Nc6+-) 22.Rc5 h6 (22...Rd8 23.Qe5 Qe5 24.Re5 Rd4 25.Ra5+-) 23.Qe5 (23.Qe5 Rb4 24.Qf6 gf6 25.c3+-) 1–0. guestxthg – guestqbkw, private online chess game, 2018.

4.e3 d6 5.c4 Nc6 6.a3 e5 7.d3 Bg4 8.Be2 Bf3 (8...Qd7!?=) 9.Bf3+/– (9.gf3?! Qg5=) 9...Nh4 10.Bd5 Rb8 11.Nd2 (11.Qa4!?+/–) 11...Ne7+= 12.g3 Nhg6 13.Bg2 d5 14.cd5 Nd5 15.Qb3 c6 16.0-0 Bd6 17.Nc4 0-0 18.Nd6 Qd6 19.Rfd1 Qf6 20.Bd5 cd5 21.Qd5 h5 22.d4 ed4 (22...Rfe8+-) 23.Bd4 (23.Qd4?! Qd4 24.Bd4 b6+-; 23.ed4?! h4+/–) 23...Qf5?? (23...Qa6+-) 24.Qf5 1–0. Fournier,Frederic – tv2, Active, 2004.

(--> 1.b4 f5 2.Bb2 e6).

3.b5 d5 4.e3 Nf6 5.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3).

3.c4 b6 4.e3 Nf6 5.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3).

3.e3 d5 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5).

3.Nf3 b6 4.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 f5).

4.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3).

4.e3 Be7 5.Nf3 0-0 (--> 1.b4 f5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0).

4.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5).

4.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5).

4.e3 c6 5.a4 d5 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.a4).

(--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6).

4.a3 d5 5.e3 c6 6.Nf3 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

4.a3 Be7 5.e3 0-0 6.Nf3 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.a3 Be7 5.Nf3 0-0 6.e3).

4.b5 b6 5.Nf3 Bb7 6.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

4.b5 c6 5.a4 d5 6.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.a4).

4.b5 Be7 5.Nc3 0-0 6.e3 (---> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0 6.Nc3).

4.b5 Be7 5.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4).

4.b5 Be7 5.e3 0-0 6.Nf3 d6 7.d4 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0 6.Nf3 d6 7.d4).

4.b5 Be7 5.e3 d5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 Be7).

4.b5 Be7 5.e3 d6 6.Nf3 0-0 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0 6.Nf3 d6).

4.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.c4).

(--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6).

4.a3 Be7 5.Nf3 0-0 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.a3 Be7 5.Nf3 0-0 6.e3).

4.b5 b6 5.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3).

4.b5 b6 5.Nf3 Bb7 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

4.b5 d5 5.Nf3 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.Nf3 Nf6 5.b5).

4.b5 Be7 5.a4 0-0 6.Nf3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.a4).

4.b5 Be7 5.Be2 0-0 6.Nf3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2).

4.b5 Be7 5.Nf3 b6 6.Be2 Bb7 7.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3 Be7 7.Be2).

4.Nf3 Be7 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3).

(--> 1.b4 f5 2.Bb2 Nf6 3.Nf3 e6).

4.a3 c6 5.e3 d5 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 c6).

4.a3 c6 5.e3 d5 6.c4 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

4.a3 Be7 5.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.Nf3).

4.b5 Be7 5.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3).

4.b5 Be7 5.e3 0-0 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0 6.Nf3).

4.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.Nf3).

3.a3 Be7 4.c4 Nh6 5.e3 0-0 6.d4 f5 7.Nf3 Bf6 8.Bd3 d6 9.Nbd2 Nd7 10.0-0 c6 11.e4 a6 12.e5 (better is 12.Qe2!?+/–) 12...de5= 13.de5 Bg5? (13...Ne5!? 14.Be5 Qd3=) 14.Qc2 Bd2 15.Qd2 b5 16.c5 a5 17.Rfd1 Bb7? (17...Qc7 18.Ng5 Nb8 19.Be2+/–) 18.Bc3 (better is 18.Bc2!? Bc8 19.Qd6 Qe8 20.Qc6 Ra7+-) 18...ab4 19.ab4 Ra1 20.Ra1 Rf7 21.Ra7 Bc8 22.Nd4 Nf8?? 23.Rf7 Nf7 24.Nc6 Qd5?? 25.Bb5 Kh8 26.Qd5 ed5 27.Ne7 Be6 28.c6 Ng5 29.c7 Ne4 30.Bb2 h6 31.c8Q Bc8 32.Nc8 Ng6 33.Nb6 Nf4 34.g3 Ne6 35.Nd5 Nd2 36.Bd7 Nd8 37.Bf5 Nc4 38.Bc3 Kg8 39.e6 Kf8 40.e7 Ke8 41.ed8Q Kd8 42.Be6 Nd6 43.Be5 Nb5 44.Nc7! g5 45.Nb5 h5 46.Nd4 (46.Nd4 Ke8 47.b5 Ke7 48.b6 g4 49.b7 h4 50.b8Q hg3 51.Qd6 Ke8 52.Qd7 Kf8 53.Bd6; 46.Bf6 Ke8 47.Nd6 Kf8 48.b5 h4 49.b6 hg3 50.b7 gh2 51.Kh2 g4 52.b8Q) 1–0. Fournier,Frederic – efrayrey(C), Active, 2007.

3.a3 h6 4.e3 a6 5.Qh5 Ke7 6.Bd3 d5 7.Nf3 e5? (better is 7...Kd7+/–) 8.Nh4+- Rh7 (8...Qe8 9.Ng6 Kd6+-) 9.Bh7 Be6 10.f4 e4 11.Nf5 Bf5 12.Qf5 Qd6 (12...Qd7 13.Qh5 c6 14.0-0+-) 13.Bg8 Nd7 (13...c6 14.c4 Qd7 15.Qh7+-) 14.Bd5 c6 15.Bg8 Re8 16.Nc3 Kd8 17.Bf7 Re7 18.Ne4 Qc7 19.Bg6 b5 20.a4 (20.Bd4 Qc8+-) 20...Nb6 21.ab5 cb5 22.Ra6 Rd7 23.Bf6! Be7 (23...gf6 24.Qf6 Double attack (24.Qe6 Decoy)) 24.Qe6 Qd6 25.Be7 Qe7 (25...Kc7 26.Bd6 Rd6 27.Qd6 Kc8 28.Rb6 h5 29.Bf5) 26.Qb6 Rc7 27.Ra8 Kd7 28.Bf5 1–0. Pech,Jaroslav – Stoyanov,Zdravko, FICGS, 2015.

3.b5 e5 4.a4 b6 5.e3 c6 6.c4 c5 (6...a6 7.d4 Bb4 8.Bc3+=) 7.Nf3 (better 7.Be5!? Bb7 8.Bf4+-) 7...Bb7= 8.d4 e4 (8...ed4 9.ed4 cd4 10.Bd3 Bb4 11.Nbd2 Qe7 12.Kf1+=) 9.Nfd2 f5 (9...cd4 10.Bd4 Bb4 11.Be2+-) 10.dc5+- Nf6 (10...bc5 11.Be2 Nf6 12.a5+-) 11.Be2 (11.cb6!? ab6 12.Be2+-) 11...Bc5+= 12.0-0 Bb4 13.f3 (13.Bc3 Bc3 14.Nc3 0-0+-) 13...0-0= 14.fe4 Bd2 (better 14...fe4!? 15.Bd4 Qc7+=) 15.Nd2+- Ne4 16.Bf3 (better 16.Ne4 Be4 17.Qd4+-) 16...Nd2?? (better 16...Qg5 17.Bd4 d5+-) 17.Qd2 (better 17.Bb7 Nf1 18.Qd5 (18.Ba8?! Ne3 19.Qd6 h6+=) 18...Kh8 19.Kf1+- (19.Ba8?! Ne3 20.Qd4 Qg5=; 19.Rf1 Qe7 20.Qd2 Nc6 21.Ba8 Ra8 22.bc6 dc6+-)) 17...Bf3 18.Rf3 Qg5 (18...d5 19.Qd4 Qd7+-) 19.Qd5 Kh8 (19...Rf7 20.Rg3 Qg3 21.hg3+-) 20.Qa8 h6 (20...Qd8 21.Qa7 h6 22.Bd4+-) 21.Qa7 (21.Rg3 Qe7 22.Bg7 Kh7 23.Bf8 Qf8 24.Rf1 Kh8 25.Rf5 Qg8 26.Rg8 Kg8 27.Qd5 Kg7 28.Rf7 Kg8 29.Qf5 a6 30.Qh7) 21...d6 (21...Qd8+-) 22.Rg3 Nc6 23.bc6 Qe3 (23...Qg3 24.hg3 Rf6 25.Bf6 gf6 26.c7 Kg7 27.c8Q Kg6 28.Qg8 Kh5 29.Qaf7) 24.Re3 (24.Re3 Rg8 25.Rg3 b5 26.Bg7 Kh7 27.Bd4 Rg7 28.Qg7) 1–0. RichardSommer (2115) – roubaix2015 (1990), lichess.org, 2020.

3.b5 Be7 4.a4 Nh6 5.c4 (5.e4 0-0=) 5...Nf7 6.e3 d6 7.Nc3 e5 8.Nf3 0-0 9.d4 Be6 (9...ed4 10.Qd4 Nd7 11.Be2=) 10.Be2 ed4 (10...a6 11.d5 Bd7 12.0-0+=) 11.Nd4+- Bd7 12.0-0 c6 13.a5 c5 (13...a6!? 14.b6 f5+-) 14.Nb3+- a6 15.b6 Nc6 16.Bf3 (better 16.Nd5+-) 16...Nce5? (better 16...Be6!? 17.Bd5 Qd7+-) 17.Bb7+- Rb8 (17...Nc4 18.Bc1 Rb8 19.Ba6+-) 18.Bd5 (18.Ba6!? Ra8 19.Bb7 Nc4 20.Ba8 Nb2+-) 18...Kh8 19.Ne4 Ng5 (19...Bf5 20.Qc2+-) 20.f4 (better 20.Ng5!? fg5 21.Nc5 Bg4+-) 20...Ne4 (20...Nc4 21.Bc4 Ne4 22.Ba6+-) 21.fe5 (21.Be4?! Nc4 22.Bc1 f5+-) 21...de5?? (21...Ng5 22.ef6 Bf6 23.Bf6 Rf6+-) 22.Be4 Be6 (22...Qc8 23.Rb1+-) 23.Bd5 (23.Qh5!? Bg8+-) 23...Bd5 24.Qd5 Qc8 25.Rad1 (25.Ba3 Rd8 26.Qf3 Rd3+-) 25...Rd8 26.Qe4 Qe6 (26...Rd1 27.Rd1 Qe8 28.Rd5+-) 27.Rd5 (27.Ba3 Rd1 28.Rd1 f5+-) 27...Rd5 28.Qd5 Qf5 (28...Qc8+-) 29.Rf5 g5 30.Be5! Kg7 (30...fe5 31.Qe5 Theme: Double Attack) 31.Bb8 (31.Rg5 Kh6 32.Qf7 Kg5 33.Bf4 Kg4 34.Qh7 Rb6 35.Qh3) 31...Kg6 (31...h5 32.Qe6 Bd6 33.Qf6 Kh7 34.Qf7 Kh8 35.Bd6 h4 36.Be5) 32.Bd6 (32.Qg8 Kf5 33.e4 Ke4 34.Qd5 Ke3 35.Qf3) 32...h6 (32...Bd6 33.g4 Bb8 34.Qg8 Kh6 35.Rf6) 33.Be7 h5 (33...Kh5 34.Rf4 Kg6 35.Qg8 Kh5 36.Qe8) 34.Rf6 Kh7 (34...Kg7 35.Qg5 Kh7 36.Rh6) 35.Qf7 Kh8 36.Rh6 1–0. BeepBeepImAJeep (2580) – Pushka (1630), lichess.org, 2016.

3.b5 f5 4.e3 Nf6 5.Nf3 Ne4 (5...d5 6.Be2=) 6.d3 (6.Be2 Be7+=) 6...Nc5 (6...Nf6 7.Be2+=) 7.c4 b6 (7...a6 8.Ne5 Qg5 9.h4+=) 8.Ne5+/– Qe7?? (better is 8...Qh4+/–) 9.Qh5+- Kd8 (9...g6 10.Ng6! hg6 11.Qg6 (11.Qh8?! a6+-) 11...Qf7 12.Qf7 Kf7 13.Bh8+-) 10.Nf7 Qf7 (10...Ke8 11.Nh8 g6 12.Ng6 hg6 13.Qg6 Qf7 14.Qf7 Kf7+-) 11.Qf7 g6 (11...Be7+-) 12.Bf6 Be7 13.Be7# (13.Qe7#) 1–0. Bonetti,Shane – woj1, ICC, 2002.

3.b5 Kf7 4.e3 a6 5.a4 (5.Bd3 Nh6 6.Nc3 ab5 7.Bb5 c6=) 5...ab5= 6.ab5 Ra1 7.Ba1 d5 8.Bd3 Ne7 9.Nf3 Nd7 10.Nh4 e5 11.Be2 Ng6 (11...e4 12.f4 Nc5 13.0-0=) 12.Bh5= Bd6 13.0-0 Ndf8 14.f4 (14.Nc3!? Kg8 15.Nf3=) 14...ef4=+ 15.ef4 Kg8 16.Ng6 hg6 (worse 16...Ng6 17.g3=) 17.Bg4 (17.Bf3 c6 18.bc6 bc6=+) 17...c6 18.Bc8 Qc8 19.bc6 bc6 20.Qf3 g5 21.fg5 Bh2 22.Kf2 fg5 23.Nc3 Bf4 24.g3 Rh2 (24...Bd2?! 25.Kg1 Qe8 26.Nd5=) 25.Kg1 Rh3 26.Ne2 Ng6 27.Qc3 Be5 28.Qe3?? (better 28.Qf3-/+) 28...Ba1-+ 29.Ra1 (29.Qg5 Qe6 30.Qf5 Qf5 31.Rf5 Bf6-+) 29...Qg4 30.Ra8 (30.Kf1 Ne5 31.Kg2-+ (31.Qe5?? Qf3 32.Ke1 Rh1 33.Ng1 Rg1)) 30...Kh7 31.Qd3 Qh5 32.Re8 (32.Rf8 Rh1 33.Kf2 Qh2 34.Ke3 Re1-+) 32...Rh1 33.Kf2 Rh2 34.Ke3 (34.Ke1 Qh3 35.Qe3 Rh1 36.Ng1-+) 34...Qg4 35.Qa6 (35.Ng1 c5 36.Qd5 Qg3 37.Nf3-+) 35...c5 36.Kd3 Re2 37.Qa4 Qa4 (37...Qa4 38.Rh8 Kh8 39.Ke2 Ne5 40.d3 Qc2 41.Kf1 Qd2 42.d4 Ng4 43.Kg1 cd4 44.Kf1 Qf2) 0-1. DEFFM – GuestYWHJ, freechess.org, 2021.

3.b5 h5 4.e3 Qe7 (4...d5 5.Be2+=) 5.Be2 Qb4 (5...Qf7 6.Nf3+=) 6.Bh5 (6.Ba3 Qe4 7.Bf8 Kf8+/–) 6...Kd8+= 7.Ba3 Qb5 8.Bf8 d6? (8...Rh5!? 9.Nc3 Qg5+=) 9.Be2 (9.g4!? Nd7 10.Bg7 Rh7+/–) 9...Rh4?? (better is 9...Qd7+/–) 10.Bb5+- (10.Bb5 Rh7 11.d4+-) 1–0. DEFFM – GuestCBMV, freechess.org, 2018.

3.b5 Nh6 4.a4 Nf7 5.c4 d5 6.e3 dc4 7.Bc4 a6 (7...Nd6 8.Ba2 Nd7 9.Nf3+/- (worse 9.Be6 Nc5 10.Qh5 g6 11.Qc5 Be6+=)) 8.Nf3+/- ab5 9.ab5 Ra1 10.Ba1 Qe7 (10...Nd6 11.Be2+/-) 11.0-0 Nd7 12.d4 Nb6 13.Be2 e5 14.de5 Ne5 (14...fe5 15.Nc3+/-) 15.Ne5+- fe5 16.Nd2 (16.f4 g6 17.Be5 Bg7 18.Bg7 Qg7+-) 16...g6 17.Nf3 (17.Qc1 Bg7 18.Bb2 Be6+-) 17...Bg7 18.Qc2 0-0 19.Rc1 Nd5 (19...Bd7 20.Qe4 (20.Qc7? Rc8 21.Bc4 Nc4 22.Qb7 Rc5-+) 20...Ra8 A) worse 21.Ne5 Ra1 22.Ra1 Bf5 23.Qb7 Be5= (23...Qe5? 24.Ra7+-); B) 21.Rd1+=) 20.Bc4+- Be6 21.Nd2 (21.Be5 Be5 22.Ne5 Rd8+-) 21...Kh8 (21...Ra8 22.Qe4 Qa3 23.Rf1+/-) 22.Ne4 (22.Bd5!? Bd5 23.e4+/-) 22...h6 (22...c6 23.Qb3+=) 23.h3 Qf7? (23...Qh4 24.Bb2+=) 24.Ng3?? (better 24.Nc5 Bc8 25.Nd3+-) 24...b6 (24...Kg8 25.Bb2+=) 25.Bd3 (better 25.Bb2+/-) 25...g5? (better 25...Nb4!? 26.Bg6 Nc2 27.Bf7 Rf7 28.Rc2 Kh7+/-) 26.Bg6+/- Qe7 (26...Qf6 27.Nh5 Nb4 28.Nf6 Nc2 29.Rc2 (29.Be5?! Nb4 30.Rc7 Bf6+=) 29...Rf6 30.Bh5+-) 27.Be4 (27.Nh5 Kg8+-) 27...Nf6 (27...Qf7!?+/-) 28.Be5+- Ne4 (better 28...Bd7 29.Bf6 Qf6+-) 29.Bg7 Qg7 (29...Kg7 30.Qe4 Qf7 31.Rc6+-) 30.Qe4 (30.Ne4?! Qe5+-) 30...Bg8 (30...Qf7 31.Rc6 Re8 (31...Qf2?? 32.Kh2 Rf6 33.Rc2+-) 32.Qe5 Qg7 33.Qg7 Kg7 34.Rc7 Kf8+-) 31.Rd1 (better 31.Nh5 Qb2 32.Rc7 Rf2 33.Qc6 Rg2 34.Qg2 Qa1 35.Qf1 Qf1 36.Kf1+-) 31...Qf7 (31...Qf6 32.f3 Bh7 33.Qb4+-) 32.Qd4 Qg7 33.Qg7 Kg7 34.Rd7 Rf7 35.Rd3 (35.Rd8 Rf8 36.Nh5 Kf7 37.Rd7 Ke6 38.Rc7 Rd8+-) 35...Kg6 (35...Kf6 36.Rd8 Bh7 37.Ne2+/-) 36.Ne4 (36.Rc3!?+/-) 36...Re7 37.Rd4 (37.Nc3 Re5+=) 37...Be6 (37...Re5 38.Rb4+=) 38.f3 Bd7 39.Nc3 Bf5 (39...Re3!? 40.Rc4 Re5+=) 40.e4+/- Be6 41.Nd5 (41.Kf2!?+/-) 41...Rd7+= 42.Kf2 Kf7 (better 42...Bd5!? 43.ed5 Kf6+=) 43.Ke3+/- Bd5 (43...Kg7 44.Nb4+-) 44.ed5 (44.Rd5 Ke8 45.Rd7 Kd7 46.Kd4 c5 47.bc6 Kd6 48.g3 Kc6 49.f4+-) 44...Kf6 45.Kd3 Ke5 (45...Rd8 46.Kc4+/-) 46.Kc4 Kd6 (46...h5 47.Re4 Kf6 48.Kd4+/-) 47.Re4+- Rf7? (better 47...Rh7+-) 48.Re6 Kd7 49.Rh6 Rf4 50.Kd3 (50.Kc3!? Rf5 51.Kd4 Rf4 52.Ke5 Rb4+-) 50...Rb4 51.Ke3 (51.Rg6 Rb5 52.Rg5 Kd6+-) 51...Rb3 (51...Rb5 52.Ke4 Rb2+/-) 52.Kf2?? (52.Ke4 Rb2 53.g4 Rb4 54.Ke5 Rb3 55.Rh7 Kd8+-) 52...Rb4? (52...Rb2 53.Kf1 Rb1 54.Ke2 Rb2 55.Kd1 Rb5 56.d6=) 53.Kg3?? (better 53.Rg6+-) 53...Rb5= 54.Rh7 Kd6 55.Rh5 Kd5?? (better 55...Rd5 56.Rh6 Kc5=) 56.Rg5+- Kc4 (56...Ke6 57.Rb5 Kd6 58.h4+-) 57.Rb5 Kb5 58.h4 1-0. CrushTheCMKing (2505) - Morkva (2410), Rated Bullet game, lichess.org, 2016.

3.c3 c6 4.Na3 (4.e4 a5 (4...d5= 5.ed5 ed5 6.Bd3 Nh6 7.Nf3 Bd6=) 5.ba5 d5 6.ed5 ed5 7.Bd3 Qa5=; 4.e3 e5 (4...d5 5.d4 Bd6 6.Bd3 Nh6 7.Qc2 g6=) 5.d4 Nh6 6.a3 a5 7.d5 b5=; 4.Nf3 d5 (4...a5 5.ba5 d5 6.d4 c5 7.Nbd2 Nc6=; 4...e5 5.e4 d5 6.ed5 Qd5 7.a3 a5=) 5.e3 e5 6.Be2 Bd6 7.0-0 Ne7=; 4.d4 d5 (4...a5 5.ba5 d5 6.Nd2 e5 7.de5 fe5=) 5.e3 Bd6 6.Bd3 Nh6 7.Nf3 e5=; 4.d3 a5 (4...e5 5.e4 d5 6.Nd2 Bd6 7.Be2 Ne7=; 4...d5 5.Nd2 a5 6.a3 ab4 7.ab4 Ra1=; 4...Ne7 5.e4 d5 6.Nd2 a5 7.ba5 Ra5=) 5.a3 d5 6.Nd2 ab4 7.ab4 Ra1=) 4...a5 (4...d5 5.e3 e5 6.Be2 Bd6 7.d3 a5+=) 5.b5 Ba3 (5...d5 6.e3= e5 7.Qh5 g6=) 6.Ba3+= cb5 (6...d5 7.e3 e5+=) 7.e4 (7.e3+= b4+=) 7...Qb6 (7...b4!? 8.cb4 d5=) 8.Qh5+/– g6 9.Qb5 Qb5 10.Bb5 Ne7 11.Nf3 Nbc6 12.0-0 (12.Rb1 d5 13.e5 Kf7+/–) 12...b6 (12...d5 13.e5 fe5 14.Ne5+/–) 13.Rfb1+/– Bb7 14.Be2 (14.Ba4 Nc8+/–) 14...Ba6 (14...Nc8 15.d4+/–) 15.c4 0-0 (15...d5 16.ed5 ed5 17.Rb6 Bc4 18.Bc4 dc4 19.Be7 Ne7 20.Rf6 Rc8+-) 16.Rb6+- Rfb8 17.Rab1 (17.Rbb1 g5+-) 17...Nc8 (17...Nb4 18.Rb8 (18.Bb4?? Rb6 19.a3 Nc6-+) 18...Rb8 19.Rb3+/–) 18.Rb8 Rb8 19.Rb8 Nb8 20.Nd4 e5 21.Nb3 a4 (21...Bb7+-) 22.Nc5 Nb6? (22...f5+-) 23.Na6 Na6 24.c5 Nc5 25.Bc5 Na8 (25...Nc8 26.Ba6 d6 27.Bb4+-) 26.Bb5 1–0. pierred – sloppy, internet, 2008.

3.c3 Nc6 4.e4 (4.Nf3 d6=) 4...Ne5 (4...d5!? 5.ed5 ed5=) 5.d4+= Ng6 6.Nf3 d5 7.Nbd2 de4 (7...Bd6 8.Bd3+=) 8.Ne4 Bd7 (8...Nf4 9.Bc1 Nd5 10.Bd3+/–) 9.Bd3 Bc6 (9...Nf4 10.0-0+=) 10.0-0 f5 (10...Nf4 11.Bc2+=) 11.Neg5 (better is 11.Nc5 Bc5 12.bc5+/– (12.dc5?! Nf4 13.Be2 Qd1 14.Bd1 Nd3=+)) 11...h6? (better is 11...Nf4+/–) 12.Ne6+- Qe7 (12...Qd6 13.Bf5 N8e7 14.Bg6 Ng6 15.d5+-) 13.Bf5 Bf3 (13...Kf7 14.d5 Bb5 15.Re1+-) 14.Qf3 (14.Bg6 Kd7 15.Qf3 Qe6+-) 14...Nh4 (14...Kf7 15.Qb7 Re8 16.Nc7+-) 15.Qb7 Nf5 (15...Rd8 16.Qb5 Kf7 17.Nd8 Kf6 18.Nc6+-) 16.Qa8 Kf7 17.Rfe1 Nf6 (17...Kf6 18.Nf8 Qd6 19.Re6 Qe6 20.Ne6 Ke6 21.Qf8+-) 18.g4! (18...Qd6 19.gf5 Qh2 20.Kh2 Bd6 21.Kh3 Ra8 22.Re2+-) 1–0. Wall,Bill – Jarvy, internet, 2003.

3.c3 d5 A) 4.e3= Bd6 (4...a5 5.b5 e5 6.d4 Nd7 7.c4 Ne7=; 4...e5 5.d4 ed4 6.ed4 a5 7.b5 Bf5=) 5.Bd3 Nh6 6.Qh5 Nf7 7.Nf3 e5+=; B) 4.Nf3 Bd6 (4...e5 5.e3 Bd6 6.c4 Bb4 7.Qb3 e4=; 4...Nh6 5.d4 a5 6.b5 Bd6 7.e3 a4=; 4...a5 5.Qa4 Bd7 6.b5 c6 7.e3 e5=) 5.e3 Ne7 6.Be2 0-0 7.0-0 e5+=; C) 4.d4 a5 5.b5 Bd6 6.Nd2 Ne7 7.c4 dc4=.

3.c4 Ne7 4.Nf3+= d6 (4...a6 5.Nc3+=) 5.e3 Nd7 (5...Nbc6 6.b5 Ne5 7.Nc3+-) 6.Nc3+- c5 7.bc5 Nc5 (7...dc5 8.Be2+-) 8.d4+- Na6 9.Be2 Qb6 (9...Bd7 10.0-0+-) 10.Rb1 Qc7 (10...Ng6 11.0-0+-) 11.0-0 g6 (11...Kf7 12.Ba3 Qd8 13.Bd3+-) 12.Nb5 Qd7 13.Ba3 Nc6 14.d5 Ne5 (14...Nd8 15.Nd2 Nc5 16.Nb3+-) 15.de6 (15.Nfd4!? ed5 16.cd5 Kf7+-) 15...Qe6 16.Nd6 Bd6 17.Bd6 Nc4 18.Qa4 Qd7 19.Qc4 Qd6 20.Rfc1 Qd8 (20...Ke7+-) 21.Rd1 Qc7 22.Qe4 Kf7 23.Ba6 Re8 24.Qd5 Kg7 25.Bb7 Rb8 26.Bc8 Rec8 (26...Rd8 27.Rbc1 Qc8 28.Qd8 Qd8 29.Rd8 Rd8 30.Rc7 Kg8 31.Nd4+-) 27.Rb8 Rb8 28.Qd7 Qd7 29.Rd7 (29.Rd7 Kg8 30.g3+-) 1–0. Fournier,Frederic (1925) – Konvalinka,Martin (1940), Active, 2011.

3.e3 Nh6 4.a3 Nf7 5.d4 Be7 6.c4 d6 (6...a5 7.b5+=) 7.Bd3 Bd7 8.Qh5 f5 9.h4 (9.Nf3!?+=) 9...g6= 10.Qf3 0-0 (10...e5!? 11.Qg3 Bf6=) 11.h5+= (11.Qb7?? Bc6 12.Qa8 Ba8-+) 11...e5? (better 11...g5!?+=) 12.hg6+- hg6 13.Qh5 (13.Qh5 gh5 14.Rh5 ed4 15.ed4-+; 13.Qb7? Bc6 14.Qa8 Ba8-+). unjournakamura (2460) - TomSkifKobalt (1965), Hourly Crazyhouse Arena, lichess.org, 2021.

3.e4 c5 4.bc5+= Bc5?? (4...Qa5 5.a3+=) 5.d4 (better is 5.Qh5 Ke7 6.Qc5 d6 7.Qe3+-) 5...Bb6 6.Nf3 d6 7.Bd3 a6 8.Nbd2 Nc6 9.0-0 d5 10.ed5 ed5 11.Re1 Nge7 12.Ba3 Bd4?? 13.Nd4+- 0-0 14.N2f3 Bg4 15.c3 Nd4 16.cd4 Re8 17.Be2 Bf3? 18.Bf3 Nf5 19.Re8 Qe8 20.Bd5 Kh8 21.Qd2 Rb8 22.Re1 Qd7 23.Bb3 Nd4 24.Kh1 Rd8 25.Bc5 Nb5 26.Qd7 Rd7 27.Re8 1–0. Ole P – dunk0104, ChessWorld.net, 2012.

3.e4 Bd6 4.Bd3 (4.a3!?+=) 4...Bb4=+ 5.Qh5 g6 6.Qh4 Be7 7.Nf3 f5 (7...Nc6 8.e5 Kf7 9.Qc4=+) 8.Qf4 g5 (better 8...Nf6!?=+) 9.Qg3+= f4 (9...Bf6!? 10.Bf6 Nf6 11.ef5 g4+=) 10.Qh3+/- Bf6 (10...Nf6 11.e5 Nd5 12.Bh7+-) 11.Qh5 Ke7? (better 11...Kf8 12.e5 Be7+-) 12.e5 Bg7 (12...h6 13.ef6 Nf6 14.Bf6 Kf6+-) 13.Qg5 Ke8 14.Qg7 Qe7 15.Qh8 Kf8 (15...Qf8+-) 16.Ba3 d6 17.ed6 cd6 18.Bh7 Qg7 19.Bd6 Kf7 20.Bg8 Qg8 (20...Kg6 21.Ne5 Kf6 22.Qh4 Qg5 23.Ng4 Kf5 24.Bh7 Qg6 25.Qh5 Ke4 26.Qe5) 21.Ne5 (21.Ne5 Ke8 22.Qg8) 1-0. DEFFM – GuestBNNB, freechess.org, 2021.

3.e4 Nh6 4.b5 c6 (4...a6 5.a4+=) 5.a4 (5.Nc3 Be7+=) 5...a5 (5...d5!?=) 6.Nf3 Bc5 (6...Qb6 7.Nc3+/-) 7.d4 Bb4 8.c3 Be7 9.Bd3 b6 10.Nh4 (10.Nbd2 Bb7+-) 10...0-0 11.Nf3 c5 12.0-0 d5 (12...Qc7 13.Nbd2+/-) 13.ed5 Qd5 (13...ed5 14.Qc2+-) 14.c4 (14.Nbd2!? Ra7+-) 14...Qh5 15.Re1 Bd6 (15...cd4 16.Bd4 Bc5 17.Bc5 Qc5 18.Nbd2+-) 16.Nbd2+- Ng4? (better 16...cd4 17.Bd4 Bc7+-) 17.h3 Nh6 18.Ne4 Bf4 (18...Be7 19.dc5 bc5 20.Ng3+-) 19.dc5 bc5 20.Qc2 Nd7 (20...Bb7 21.Ng3 Bg3 22.Bh7 Kf7+-) 21.Ng3 Bg3 (21...Qe8 22.Bh7 Kh8 23.Bg6+-) 22.Bh7 Kh8 ½-½. DEFFM – GuestYBNR, freechess.org, 2021.

3.Nf3 Bb4+= 4.a3 Ba5 5.e4 Ne7 6.e5 f5 7.Nc3 0-0 8.Ng5 Nec6 (8...Bc3 9.Bc3 Nd5 10.Qh5-/+) 9.Qh5+= h6 10.Nf3 d5 11.Bd3 Nd7 12.0-0 (better is 12.Ne2!?+=) 12...Nde5-+ 13.Ne5 Ne5 14.Bb5 c6 15.Ba4 (better is 15.Rae1-+) 15...Nc4 16.Bc1 Bc3 17.dc3 Bd7 (17...Qa5 18.Bb3 Qc3 19.Rb1-+) 18.Bh6 Qf6 (18...Be8 19.Qg5 Qc7 20.Qf4-+) 19.Bg5 Qf7 (19...Qc3 20.Be7 Rfe8 21.Bb4-+) 20.Qh4-/+ Qg6 (20...e5 21.Bb3-/+) 21.Bb3 Nd6 (21...b5 22.Rfe1-/+) 22.Rfe1 (22.Be7!? Ne4 23.Bf8 Rf8 24.f3=) 22...Rf7 23.c4 (better is 23.Bf4 Ne4 24.c4+=) 23...Rff8?? (better is 23...dc4!? 24.Ba2 Ne4-/+) 24.cd5 (24.Be7 Ne4 25.Bf8 Rf8+/–) 24...cd5 (better is 24...ed5 25.c4 dc4 26.Bc4 Nc4 27.Qc4 Qf7=) 25.c4?? (better is 25.Be7 Ne4 26.Bf8 Rf8 27.Qe7+=) 25...dc4 26.Bc2 Kf7?? 27.f4?? Rh8 28.Qf2 Ne4 29.Be4+= fe4 30.Qd4 Bc6 31.Qd6? Rad8?? 32.Qe7+- Kg8 33.Qd8 Kh7 34.Re3 Rd8-+ 35.Rh3? Kg8 36.Bd8 Kf7 37.Rd1?? e3! 38.Rd6 Qg2# 0–1. guest907 – bez, ICS blitz, 2001.

3.Nf3 b5 4.e3+= c6 5.a4 Ba6 (5...Bb4 6.ab5 d5 7.Ra4+=) 6.ab5 Bb5 7.Bb5 cb5 8.Ra7?? (8.Nd4 Nc6 9.Nc6 dc6 10.Qh5 g6 11.Qg4+=) 8...Nc6 (better 8...Ra7 9.c3 Na6-+) 9.Ra8+/- Qa8 10.Ng5?? (better 10.c3!?+/-) 10...Nb4 (better 10...fg5 11.Qh5 Kd8 12.Qg5 Nge7-/+) 11.Bf6?? (better 11.Nf3=) 11…gf6 (11...Nf6?! 12.0-0-+). unjournakamura (2380) – triplecannon, Casual Crazyhouse game, lichess.org, 2019.

4.ba5 Nc6 5.e4 (5.Nf3 d5 6.Nc3 e5 7.e3 Na5 8.Be2=; 5.e3 e5 6.Nf3 d5 7.Bb5 Bd7 8.0-0=; 5.Nc3 d5 6.a6 ba6 7.e3 Rb8 8.Rb1=; 5.a6 ba6 6.Nc3 d5 7.e3 Rb8 8.Rb1=) 5...d5 6.Bb5 Ra5 7.Qh5 g6 8.Qe2=.

4.ba5 d5 5.e3 (5.e4 de4 6.Qh5 g6 7.Qe2 e5 8.Qe4=; 5.Nc3 Ra5 6.e3 e5 7.Nf3 Bd6 8.Nb5=; 5.Nf3 e5 6.e3 Ra5 7.c4 Be6 8.cd5=; 5.d4 Ra5 6.Nd2 c5 7.Nb3 Ra7 8.dc5=) 5...Ra5 6.Bd3 Qd7 7.Qh5 Qf7 8.Qf7=.

4.ba5 e5 5.e3 (5.Nc3 d5 6.e4 d4 7.Nd5 Ra5 8.c3=; 5.e4 d5 6.ed5 Qd5 7.Qh5 g6 8.Qf3=; 5.d4 ed4 6.Bd4 Nc6 7.Bc3 d5 8.e3=) 5...Ra5 6.d4 ed4 7.Bd4 Qe7 8.Bc3=.

4.ba5 Nh6 5.d4 (5.Nc3 d5 6.Nf3 e5 7.e4 d4 8.Nd5=; 5.e4 d5 6.Nc3 d4 7.Nb1 Ra5 8.c3+=; 5.e3 d5 6.d4 Ra5 7.c4 Nc6 8.Nf3=; 5.a6 Na6 6.e4 d5 7.Qh5 Nf7 8.Nc3=) 5...d5 6.Nd2 Be7 7.e4 0-0 8.Bd3=.

4.b5 a4 5.c4 c5 (5...d5 6.e3+=) 6.Nf3 (6.Nc3 d5 7.e3 d4 8.ed4 cd4 9.Na4 Qa5+=) 6...d5 7.Nc3 (7.e3 e5+=) 7...d4= 8.Ne4 Nh6 (8...f5 9.Ng3=) 9.e3 f5 (9...e5!?=) 10.Ng3+= d3 (10...f4!? 11.Ne4 fe3 12.fe3 Nf5+/–) 11.Nh5 (11.Qb1 Bd7+-) 11...Bd6?? (better is 11...Rg8+/–) 12.Bg7+- (12.Bg7 Nf7 13.Qb1+-; 12.Ng7?! Kf7+-) 1–0. Janek – Staffy, internet free game, 2017.

4.b5 a4 5.h4 c6 6.h5 cb5 7.Nf3 d5 8.e3 b4 9.ab4 Bb4 10.g4 (10.c3 Bd6 11.Ra4 Ra4 12.Qa4 Nc6=) 10...Nc6 (10...Bd7 11.g5-/+) 11.g5 e5 12.h6 gh6 (12...fg5?? 13.hg7 Qf6 14.gh8R Qh8 15.Bb5+-) 13.c4?? (better 13.gf6!? Bg4 14.f7 Kf7 15.Be5=) 13...d4 (13...hg5 14.Ra4 Ra4 15.Qa4-+) 14.c5? (14.gf6 Qf6 15.ed4 ed4 16.Be2=) 14...hg5-+ 15.Ng5 (15.Ra4 Ra4 16.Qa4 Bc5 17.Qc2-+) 15...fg5 16.Qh5 Kd7 17.Qf7 (17.Bh3 Kc7 18.Bc8 Kc8 19.Qg4 Kc7-+) 17...Qe7 18.Bh3 Kc7 19.Qd5 (19.Qc4 Qc5 20.Qd3 g4-+) 19...Nf6 Black prepares the advance g4 20.Qg2 (20.Qa2 g4 21.Bf1 Kd8-+) 20...g4 21.Na3 (21.Bg4 Ng4 22.Qe4 Kd8-+) 21...Ba3 (better 21...gh3!? 22.Qg1-+) 22.Ba3 gh3 23.Qg5 (23.Qf1 Kd8-+) 23...Rg8 24.Qh4 Rg4 25.Qh6 Rg6 26.Qh4 Be6 (26...Qg7 27.Rf1-+) 27.f4 (27.f3 de3 28.de3 Nd5 29.Qe7 Nce7-+) 27...d3 28.fe5 Ne5 (better 28...Nd7!? 29.Qe7 Ne7 30.0-0-0-+) 29.Qf4 Bd5 30.c6 Qe6 31.cb7 Bb7 (31...Bh1 32.ba8R Ba8 33.Bb2 Rg1 34.Kf2 Ne4 35.Kg1 Qg6 36.Qg5 Qg5 37.Kf1 Qg2 38.Ke1 Qe2) 32.Rc1 Kd7 33.Rb1 Bh1 34.Qd4 Bd5 35.Rb7 Kd8 36.Be7 Qe7 37.Qb6 Ke8 (37...Kc8 38.Rb8 Rb8 39.Qc7 Qc7 40.Kf2 Ne4 41.Ke1 Rg1) 38.Re7 Ke7 39.Qc5 Ke6 (39...Ke8 40.Qb5 Kf7 41.Kf1 h2 42.Qb7 Bb7 43.Ke1 h1Q 44.Kf2 Ne4) 40.Qb6 Nc6 (40...Bc6 41.e4 h2 42.Qc6 Nc6 43.Kf2 h1N 44.Kf1 Rag8 45.Ke1 Rg1) 41.e4-+ Be4 42.Kf2 (42.Qf2 Rb8 43.Qh4 Rb1 44.Kf2 Rg2 45.Ke3 Re2 46.Kf4 Rf1 47.Kg5 Rg2 48.Qg3 Rg3 49.Kh4 Rg4 50.Kh3 Rh1) 42...h2 (42...Rg2 43.Ke3 Rg3 44.Kf2 Rf3 45.Kg1 Rg8 46.Kh2 Rg2 47.Kh1 Rf1 48.Qg1 Rfg1) 43.Qb1 (43.Qc5 Rg2 44.Ke3 Rg3 45.Kf2 Rf3 46.Kg2 Re3 47.Kh2 Ng4 48.Kg1 Re1) 43...h1Q (43...Nd5 44.Qf1 Rf8 45.Ke1 Rg1 46.Qg1 hg1Q) 44.Qa2 (44.Qh1 Bh1 45.Ke3 Rg3 46.Kf2 Ne4 47.Kf1 Rf8 48.Ke1 Rg1) 44...Bd5 (44...Kf5 45.Qe6 Ke6 46.Ke3 Qf3) 45.Qd5 Qd5 (45...Nd5?!) 46.Ke3 (46.Ke1 Qe4 47.Kd1 Rg1) 46...Qe4 47.Kf2 Qe2 0-1. is_er_nog_hoop (2555) - NguyenXi1427 (2585), Rated bullet game, lichess.org, 2020.

4.b5 b6 5.a4 Bc5 6.e3 Bb7 7.Nf3 c6 (7...Ne7 8.d4 Bd6 9.Bd3=) 8.c4 (8.d4 Be7+=) 8...Bb4 9.Be2 Bc5 (9...Ne7 10.0-0+=) 10.0-0 Nh6 11.d4 Bb4 12.Nbd2 c5 13.dc5 Bc5 14.h3 (14.Nb3 Bb4+-) 14...Nf5 (14...0-0 15.Nb3 Bb4 16.Nfd4+=) 15.Qc2 0-0 16.Bd3 d5? (better 16...g6+-) 17.cd5+- (17.Bf5?! ef5 18.Qf5 Qd7 19.Qd7 Nd7+-) 17...Bd5 18.e4 (18.Bf5?! ef5 19.Qf5 Re8+-) 18...Ne3 (18...Ng3 19.ed5 Nf1 20.Nf1+- (20.Bf1?! ed5 21.Rd1 Qc8+-)) 19.fe3 Be3 20.Kh1 Bb7 21.Nc4 Qc7 (21...Bc5 22.Rad1 Nd7 23.e5+-) 22.Qb3 (better 22.Ne3 Qc2 23.Bc2 Nd7+-) 22...Bc8 (22...Bc5+-) 23.Ne3 Kh8 24.Rac1 Qf7 (24...Qd8 25.Ba3 Rg8 26.Nc4+-) 25.Rc2 (better 25.e5 Qe8 26.ef6 gf6+-) 25...Nd7 26.Ne5 Ne5 27.Be5 fe5 (27...Bb7 28.Rc7 Qg6 29.Rb7 fe5 30.Rb6+-) 28.Rf7 Rf7 29.Rc8! Rc8 30.Qe6 Theme: Double Attack 30...Rc1 (30...Rfc7 31.Nc4 Rb8 32.Qe5+-) 31.Kh2 Rf8 32.Nf5 (32.Bc4!? Ra8+-) 32...h6 33.Qe5 Rf6 34.Qe8 Kh7 35.e5 Rg6 (35...Rf1 36.Ne7 g6 37.Qg8) 36.Ne7 (36.Ne7 Rh1 37.Kh1 h5 38.Qg6 Kh8 39.Qh5) 1–0. retiponziani (1995) – just_ice (1685), ChessWorld.net, 2019.

4.b5 b6 5.Nc3+/– Bb7 6.e4 Ne7 7.Nf3 g6 (7...Ng6 8.g3+/–) 8.Bd3 (8.h4 d5 9.Bd3 Nd7+=) 8...Bg7 9.0-0 0-0 10.Qe2 (10.Re1 Nc8+/–) 10...h6 (10...f5 11.e5+/–) 11.h3 (11.h4 f5+/–) 11...g5 (11...f5 12.Rfe1+/–) 12.Qe3 (12.a4 Ng6+/–) 12...Ng6 13.Rfe1 (13.Bc4+/–) 13...e5 (better is 13...Nf4!?+/–) 14.Bc4+- Kh7 15.d4 (15.Bd5 Bd5 16.Nd5 d6+-) 15...d6 16.Be6 Nf4? (better is 16...Kh8+-) 17.Bf5 Kh8 (17...Ng6 18.Nd5+-) 18.g3 Nh5 (18...g4 19.hg4 (19.gf4?! gf3 20.Rad1 ed4 21.Rd4 Qe8+-) 19...Nh3 20.Kg2+-) 19.Bg6 ed4 (19...Nf4 20.gf4 gf4 21.Qe2+-) 20.Nd4 Ng3 (20...f5 21.Bh5 f4 22.Qd2+-) 21.Ne6 Qd7 (21...Qe7 22.Nf8 (22.fg3?! Qe6 23.Nd5 Bd5 24.ed5 Qd5+=) 22...Qf8 23.fg3+-) 22.Nf8 (22.fg3?! Qe6 23.Bf5 Qf7+=) 22...Qh3 (22...Bf8 23.fg3 Qg7 24.Bf5+-) 23.fg3 Nd7 (23...Bf8 24.Nd5 Nd7+-) 24.Bf5 Qh5 25.Ng6 Kg8 26.g4 (26.g4 Qg6 27.Bg6+-) 1–0. pierre – gniady, internet, 2009.

4.b5 c5 5.e4+= b6 (5...d5 6.Qh5 g6 7.Qe2+=) 6.Nf3 (6.Nc3 Bb7+=) 6...Bb7 (6...d5 7.e5+=) 7.d3 (7.Bd3 Bd6+=) 7...e5 (7...d5 8.ed5 ed5 9.Be2=) 8.Be2 (8.c4 Qc7+=) 8...d6 (8...Ne7 9.Nbd2+=) 9.c4 h6 (9...f5 10.Nfd2+=) 10.0-0+/– g5 (10...Ne7 11.Nh4+/–) 11.Nfd2 Bg7 (11...Bg7 12.Bg4 Ne7+/–). Khayman,Daniel (1640) – Antonov,Andrei, FICGS, 2007.

4.b5 Qe7 5.e4 (5.Nc3 d5 6.Nf3 Qd7 7.d4 Ne7 8.e4+=; 5.Nf3 d5 6.Nc3 Qd6 7.d4 Ne7 8.e4+=; 5.e3 Qf7 6.Nf3 e5 7.e4 Qg6 8.Nc3+=; 5.c4 Nh6 6.Nc3 e5 7.d4 Qd8 8.e3+=) 5...d5 6.e5 Bd7 7.Nf3 c6 8.Nc3+=.

4.b5 Be7 5.d4 (5.e4 d5 6.ed5 ed5 7.Nf3 Bd6 8.Be2=; 5.e3 d5 6.c4 Nh6 7.Nc3 0-0 8.d4=; 5.Nc3 Nh6 6.e4 Nf7 7.Nf3 d5 8.ed5=; 5.Nf3 d5 6.Nc3 Nh6 7.e4 0-0 8.ed5=) 5...f5 6.e3 Nf6 7.Nf3 b6 8.Bc4=.

4.b5 Ne7 5.d4 (5.e3 d5 6.c4 Nf5 7.Qh5 g6 8.Qf3=; 5.e4 d5 6.Qh5 g6 7.Qh4 Bg7 8.d4=; 5.Nf3 e5 6.d4 e4 7.Nfd2 d5 8.c4=; 5.Nc3 d5 6.e4 d4 7.Na4 e5 8.Bc4=) 5...d5 6.Nd2 Nf5 7.e4 de4 8.Ne4+=.

4.e3 ab4 5.ab4 Ra1 6.Ba1 Bb4 7.Bc3 Bc3 (7...Nc6 8.Bd3 Qe7 9.Qh5 Qf7 10.Qb5=+) 8.Nc3 Nc6 9.Bb5 Nh6 10.Nf3 (10.Qh5 Nf7=+) 10...b6 11.0-0 Ne5 (11...Bb7 12.Qe2=+) 12.Ne5= fe5 13.Qf3 c6 14.Ba4 (14.Be2!?=) 14...b5=+ 15.Bb3 Ba6 (15...Nf5 16.e4 Nh4 17.Qe3=+) 16.Qh5 Kf8?? (better 16...Nf7=) 17.Ra1+- Qc8? (17...Bc8!? 18.Qe5 Qf6 19.Qc7+-) 18.Qe5 (18.Ne4 Nf7 19.Nc5 Bb7+-) 18...Nf7? (18...d5 19.Qf4 Nf7 20.Qb4 c5 21.Qa5+-) 19.Qf4 (19.Qc5!? Ke8 20.Qb6 Bb7+-) 19...g5 (19...d5 20.Qb4 Ke8 21.e4+-) 20.Qf6 Rg8 (20...Bb7 21.Ne4 Qd8+-) 21.Ne4 Rg6 22.Qf3 (better 22.Qd4!? Bb7 23.Ra7 d5+-) 22...Ke7 23.Nc5 Bb7 24.c4 (better 24.Ra7 Nd8 25.Qh3+-) 24...bc4+- 25.Bc4 d6 26.Nb7 Qb7 27.h3 d5 28.Bd3 Rf6 29.Qd1 c5 (29...h6 30.Qc1 Kf8 31.Ra4+-) 30.Rb1 (30.Bh7 Kf8+-) 30...Qc6 31.Bb5 (31.Rb8!? Nd6+-) 31...Qd6 (31...Qc7 32.Be2+-) 32.Qa4+- h5? (32...Qc7 33.Bd3+-) 33.Be8 (33.Qa7!? Kf8 34.Be2 Nd8+-) 33...g4 (33...Kf8 34.Rb7+-) 34.Rb7 Kf8 35.Qa8 Kg7 36.hg4 hg4 37.Qa7 Qf8 38.Bf7 Rf7 39.Rf7 Qf7 40.Qc5 Kg6 41.Qd4 Qb7?? (better 41...Kg5+-) 42.Qg4+- Kf7 43.Qh5 Kf6 (43...Kg7+-) 44.Qh6 Kf5 45.Qf4 (45.f3 Qb4 46.g4 Ke5 47.d4 Kd6 48.Qf8 Kc6 49.Qb4 Kd7 50.g5 Kc6 51.g6 e5 52.g7 ed4 53.g8Q Kc7 54.Qd5 de3 55.Qbb7) 45...Kg6 46.Qg4 Kf6?? (46...Kf7 47.d4 Qb2+-) 47.f4 (better 47.Qh4!? Kg6+-) 47...Qb1 48.Kf2 Qc1 (48...Qc2 49.Qg5 Kf7 50.Qh5 Kf6 51.Ke2+-) 49.Qg5 Kf7 50.Qh5 Ke7 51.Qh7 Kd6 52.Qd3 Qh1 53.e4 Qh4 (53...Qh6 54.Qe3 de4 55.Qe4 Qh4 56.Kf3 Qh5 57.Ke3+-) 54.Qg3 Qg3 (54...Qh6+-) 55.Kg3 de4 56.Kf2 Kd5 57.Ke3 e5 58.f5 Kd6 59.g4 1–0. Fournier,Frederic (2020) – GARCHAZILLA (1750), ajedrez21.com, 2005.

5.Bc3 Ra8 6.e4 d5 7.Qh5 g6 8.Qf3=.

5.Nc3 d5 6.e3 e5 7.Nf3 Bf5 8.Be2=.

5.Nc3 d5 6.Nf3 Nc6 7.e3 f5 8.Bb5 Rb5? (better 8...Bd7=) 9.Nb5+- Nce7? (better 9...Nf6+-) 10.Bf6?? (better 10.Be5 Ng6 11.Nc7 Kf7 12.Nb5+-) 10...gf6 (10...Nf6 11.0-0-+) 11.Ke2 (11.Rb1 Ng6-/+) 11…Kd7. unjournakamura (2415) - mishaml (2150), Rated Crazyhouse game, lichess.org, 2021.

5.d4 d5 6.Nd2 c5 7.Nb3 Ra7 8.dc5=.

5.e3 d5 6.Bd3 Qd7 7.Qh5 Qf7 8.Qf7=.

5.e4 d5 6.ed5 ed5 7.Bd3 Qe7 8.Ne2=.

5.bc6 bc6 A) 6.Nc3 Ba6 (6...e5 7.e4 Bc5 8.Rb1 Ne7 9.Qh5 Ng6 10.Na4+=; 6...Ne7 7.e4 Ba6 8.Ba6 Na6 9.Rb1 d5 10.Qh5+=; 6...d5 7.e4 d4 8.Na4 e5 9.Bc4 Na6 10.c3+=; 6...Be7 7.e4 d5 8.Rb1 d4 9.Na4 e5 10.Bc4+=) 7.Rb1 d5 8.Nf3 Bd6 9.e4 Bf1 10.Rf1=; B) 6.d4 d5 (6...Qb6 7.Bc3 d5 8.e4 de4 9.Nd2 f5 10.Nc4=; 6...Ba6 7.Nd2 d5 8.c4 dc4 9.Ngf3 Bd6 10.e4+=) 7.Nd2 c5 8.e3 Nc6 9.Bd3 c4 10.Qh5=; C) 6.Nf3 d5 (6...Qb6 7.Bc1 e5 8.Nc3 d5 9.Rb1 Qa7 10.e3=; 6...Na6 7.Nc3 d5 8.d4 Bd6 9.e4 Ne7 10.Rb1+=; 6...e5 7.e4 d5 8.Nc3 d4 9.Na4 Be6 10.Be2=) 7.Nc3 e5 8.e4 d4 9.Na4 Be6 10.Be2=; D) 6.e4 d5 7.Nc3 d4 8.Na4 e5 9.Bc4 Na6 10.c3+=; E) 6.e3 d5 7.c4 Ba6 8.d4 Bc4 9.Bc4 dc4 10.Nd2+=.

5.e3 cb5 6.Bb5 (6.Qh5 g6 7.Qb5 Nc6 8.Nc3 d5 9.Rb1 Nge7 10.Nf3+=; 6.Bd3 Na6 (6...Nh6 7.Bb5 Nc6 8.Nc3 d5 9.Rb1 Nf7 10.Qh5+=; 6...Qc7 7.Qh5 Kd8 8.Qf7 Qd6 9.Bb5 b6 10.e4+=; 6...d5 7.Qh5 Ke7 8.Nc3 Na6 9.Bb5 Nc7 10.Be2+=; 6...Qb6 7.Qh5 Kd8 8.Bb5 Nc6 9.c4 e5 10.Nc3+=; 6...e5 7.Qh5 Ke7 8.f4 ef4 9.ef4 Qc7 10.Ne2+=) 7.Qh5 Ke7 8.Qb5 d5 9.Bc3 b6 10.Bd4+=) 6...Nc6 (6...Kf7 7.Qh5 g6 8.Qh4 d5 9.Nf3 Qb6 10.Nc3+=; 6...Na6 7.Nc3 Nc7 8.Ba4 b6 9.Nh3 Bb7 10.0-0+=; 6...Nh6 7.Nc3 Nc6 8.Nf3 d5 9.0-0 Bd6 10.Qe2+=) 7.Nc3 (7.Nf3 d5 8.0-0 Bd6 9.c4 dc4 10.Bc4+=) 7...Na7 (7...d5 8.Nf3 e5 9.Rb1 Nge7 10.d4+=) 8.Bd3 Qb6 (8...Nh6 9.Qh5 Ke7 (9...Nf7 10.Bh7+/–) 10.e4+/–) 9.Rb1 (better is 9.Qh5 Ke7 10.Rb1+/–) 9...Nb5?? (better is 9...Qc5+/– 10.Ne4+/–) 10.Nb5 d6 (10...Nh6 11.c4+-) 11.Bd4 Qc6 12.Qh5 Ke7 (12...Kd7 13.Nf3 Nh6 14.Na7 Ra7 15.Bb5+-) 13.Nd6! Kd6 (13...Qd6 14.Bc5) 14.Rb6 Qb6 15.Bb6 Ra6 (15...Ne7 16.Qb5 Nc6+-) 16.Qc5 Kd7 17.Bb5 1–0. pierre – harbavyasjag, chesspark.com, 2008.

5.e3 d5!?= A) 6.Nc3 e5 (6...Bd6 7.Bd3 Qc7 8.Qh5 Kd8 9.Nf3 e5 10.Be2=) 7.Be2 Bd6 8.Nf3 e4 9.Ng1 Nd7 10.Bh5=; B) 6.Nf3 Bd6 (6...e5 7.d4 e4 8.Nfd2 Nh6 9.c4 Be6 10.Nc3+=; 6...Nh6 7.Nc3 e5 8.Rb1 Bd6 9.bc6 bc6 10.e4=; 6...c5 7.c4 Bd6 8.d4 cd4 9.Bd4 e5 10.Bc3+=) 7.Nc3 Ne7 8.Be2 e5 9.bc6 Nbc6 10.Nb5=; C) 6.Be2 Bd6 (6...e5 7.d4 e4 8.c4 cb5 9.c5 Bd7 10.Qb3+=; 6...Bd7 7.Nc3 Qb6 8.Na4 Qc7 9.b6 Qd8 10.c4+=; 6...Bc5 7.Nf3 cb5 8.d4 Bd6 9.Bb5 Bd7 10.Bd3=; 6...cb5 7.Bb5 Nc6 8.Nc3 Bd6 9.Rb1 Nge7 10.Qh5=; 6...Qb6 7.Nf3 cb5 8.Bd4 Qd8 9.Bb5 Bd7 10.Qe2=) 7.Nc3 e5 8.Nf3 e4 9.Ng1 Nd7 10.Bh5=; D) 6.c4 e5 (6...Nh6 7.d4 Be7 8.Qh5 Nf7 9.Nc3 g6 10.Qf3+=; 6...Bd7 7.Nc3 cb5 8.Nb5 Bb5 9.cb5 Nd7 10.d4+=; 6...Bd6 7.d4 b6 8.bc6 dc4 9.Nc3 Nc6 10.Bc4+=; 6...Be7 7.Nc3 Nh6 8.Qh5 Nf7 9.d4 g6 10.Qf3+=; 6...Nd7 7.d4 Ne7 8.Nc3 Rb8 9.Nf3 Ng6 10.Qc2+/–) 7.cd5 cd5 8.d4 e4 9.Nc3 Be6 10.Qb3+=.

5.e3 Nh6 A) 6.Nc3 d5 (6...e5 7.d4 d5 8.e4 ed4 9.Qd4 Qe7 10.0-0-0+=) 7.Nf3 Bd6 8.e4 0-0 9.Be2 Qb6 10.bc6=; B) 6.Nf3 Be7 (6...d5 7.Nc3 e5 8.Rb1 Bd6 9.bc6 bc6 10.e4=; 6...e5 7.Nc3 d5 8.Rb1 Bd6 9.Be2 e4 10.Nd4=) 7.Be2 0-0 8.Nc3 d5 9.bc6 Nc6 10.0-0=; C) 6.Be2 d5 (6...Be7 7.Nf3 0-0 8.0-0 d5 9.bc6 Nc6 10.c4=; 6...e5 7.d4 d6 8.e4 Be7 9.Nf3 f5 10.Nbd2+=) 7.Nc3 Bd6 8.Nf3 e5 9.bc6 bc6 10.0-0=; D) 6.e4 d5 7.e5 fe5 8.Be5 Nd7 9.Nf3 Nf7 10.Bg3=; E) 6.Qh5 Nf7 (6...g6 7.Qf3 e5 8.d4 Nf7 9.c4 cb5 10.de5+=) 7.Nf3 d5 8.Be2 e5 9.0-0 Bd6 10.c4=.

5.e4 cb5 6.Bb5 Nc6 7.Be2 e5 8.Nf3 Bc5 9.0-0 Nge7 10.d4 ed4 11.Nd4 0-0 12.Nc6 dc6 13.Qd8 Rd8=+ 14.Nc3 Be6 15.Rad1 b5 16.Rd8 Rd8 17.h3 Ng6-/+ 18.g4? Nf4-+ 19.Kh2 Ne2 20.Ne2 Rd2 21.Nf4 Bc4 (21...Bc4 22.Rc1 Bd6-+ (22...Bf2?! 23.Bc3 Rd7 24.Rb1-+)) 0–1. lesbian15 – brennie, Live Game Caissa's Web, 2006.

5.e4 d5 A) 6.e5 Nd7 (6...Bd7 7.Nc3 Qc7 8.f4 fe5 9.Qh5 Kd8 10.Qe5+=; 6...Qb6 7.Qh5 Kd8 8.Nc3 Nd7 9.Nf3 Bc5 10.Nd1+=; 6...cb5 7.Bb5 Bd7 8.Qh5 g6 9.Qe2 Bb5 10.Qb5+=; 6...Qd7 7.Qh5 Kd8 8.Nf3 cb5 9.ef6 Nf6 10.Qg5+=; 6...Qc7 7.Qh5 g6 8.Qe2 Bg7 9.Nf3 Bd7 10.Bd4+=) 7.Nf3 Be7 8.ef6 Ngf6 9.Qe2 Nb8 10.Ng5=; B) 6.ed5 cd5 (6...ed5 7.Qh5 g6 8.Qe2 Kf7 9.Nf3 Kg7 10.Nc3=) 7.Bd3 Ne7 8.f4 Qc7 9.Qh5 Kd8 10.Nf3=; C) 6.Qe2 Nh6 (6...de4 7.Qe4 Ne7 8.Nf3 Nf5 9.Nc3 Bc5 10.Be2+=; 6...Be7 7.Nf3 Nh6 8.e5 0-0 9.ef6 Bf6 10.Bf6=; 6...Qd7 7.Nc3 d4 8.Na4 Qd8 9.e5 cb5 10.Qh5+=; 6...d4 7.e5 cb5 8.ef6 Nf6 9.Qe5 b4 10.Qd4=; 6...Ne7 7.e5 Ng6 8.Qh5 Be7 9.ef6 Bf6 10.d4=) 7.Nf3 Be7 8.e5 0-0 9.ef6 Bf6 10.Bf6=; D) 6.bc6 Nc6 (6...bc6 7.Nc3 d4 8.Na4 e5 9.Bc4 Na6 10.c3+=) 7.ed5 ed5 8.Bb5 Kf7 9.Nf3 Qe7 10.Be2=; E) 6.Qh5 g6 7.Qe2 Bg7 8.ed5 cd5 9.d4 Ne7 10.Nd2=.

6.Nc3 d5 (6...Bc5 7.e3 d5 8.Qh5 g6 9.Qf3 Bd7 10.Nb5=) 7.e3 e5 8.Bb5 Nge7 9.Nf3 Nf5 10.e4=.

6.e3 Qb6 7.Qc1 Nge7 8.Nc3 Nd5 (better is 8...d5!?=) 9.Nd5+/– ed5 10.Rb1 Qc7 11.Nf3 Be7 12.c4 dc4 13.Bc4 d6 14.0-0 b6 (better is 14...Bf5!?+=) 15.d4 Ba6?? (better is 15...Bd7+/–) 16.Ba6+- Ra6 17.d5 0-0 18.Qc6 Rc8 (18...Qc6 19.dc6 b5 20.Nd4+-) 19.Rfc1 Bd8 (19...Qc6 20.Rc6 Rc6 21.dc6+-) 20.Qc7 (20.Qe8) 20...Rc7+- 21.Rc7 Bc7 22.Rc1 Ra7 23.Nd4 Kf7 (23...b5 24.Nb5 Rb7 25.a4+-) 24.Nb5 Rb7 25.Rc7 Rc7 26.Nc7 1–0. Fournier,Frederic – psike (1710), Active, 2008.

6.e3 d5 7.Nc3 Nh6 8.Bb5 e5 9.Qh5 Nf7 10.Nf3=.

6.e3 e5 7.d4 ed4 8.Bd4 Nd4 9.Qd4 Ne7 10.Nf3+=.

6.e3 Nh6 7.Qh5 Nf7 8.Bb5 e5 9.Nc3 d5 10.Nf3=.

6.e4 d5 7.ed5 ed5 8.Bb5 Bf5 9.Ne2 Bd6 10.0-0=.

6.Nf3 d5 7.Nc3 e5 8.e3 Nh6 9.Bb5 Be6 10.0-0=.

5.Nc3 Nh6 6.d4 Be7 7.e4 0-0 8.Qe2=.

5.c4 Nd7 6.e3 Nb6 7.cd5 ed5 8.Bd3=.

5.d4 Ne7 6.Nd2 Ng6 7.e4 c5 8.Qf3=.

5.e3 Qd6 6.c4 Ne7 7.Nf3 dc4 8.Bc4 Rg8 (8...Nd5!?+=) 9.d4 Nd7 10.Nbd2 g5 11.Qc2 g4 12.Ne4 Qb6 13.Nfd2 f5 14.Nc3 Nf6 15.a4 (15.Bd3 Qd6+/-) 15...Bd7 (15...Ned5 16.0-0+/-) 16.Ba3 (16.Bb3 Ned5+/-) 16...c6 (16...Ned5 17.0-0+/-) 17.Bc5 Qd8 18.0-0 Rc8 19.e4 b6 (19...Bh6 20.b6+/-) 20.Bd6 (better 20.Be7!? Qe7 21.ef5 cb5 22.ab5+-) 20...cb5 21.ab5 fe4 22.Nce4 Ne4 23.Ne4 Nf5 24.Be5 Kf7? (better 24...Bg7!?+/-) 25.Ng3+- Nh4? (25...Rc4 26.Qc4 Nd6 27.Bd6 Bd6+-) 26.Qh7 Bg7 (26...Rg7 27.Qh5 Rg6 28.Bd3+-) 27.Rac1 (27.f3 Rc4 28.Qh5 Ng6 29.fg4 Bf6 30.Bf6 Qf6 31.Qh7 Rg7 32.Rf6 Kf6 33.Rf1 Ke7 34.Qg7 Kd8 35.Qg6 a4+-) 27...Qg5 (27...Ng6 28.Nf5 Ne5 29.Nh6 Ke7 30.de5 Qf8+-) 28.Ne4 Qg6 (28...Nf3 29.gf3 Qh6 30.Nd6 Kf8 31.Qh6 Bh6 32.Nc8 gf3 33.Kh1 Bc8 34.Rc3+-) 29.Nd6 (29.Qh4?! Qe4 30.Rfd1 a4+-) 29...Ke7 (29...Kf8 30.Qh4 Rh8 31.Qg3+-) 30.Nc8 Bc8 (30...Rc8 31.Qh4 Ke8+-) 31.Qg6 (better 31.Qh4 Bf6 32.Qg3+-) 31...Ng6 32.Bg7 Rg7 33.Bd3 Nf4 (33...Bd7 34.Rfe1+-) 34.Rc8 Nd3 35.Rc7 (better 35.Rc6+-) 35...Kd6 (35...Kf6 36.Rg7 Kg7+-) 36.Rg7 Nf2 (36...Nf4 37.Re1+-) 37.Rf2 1-0. HIALUPHARMpl (2690) - Sakanelli (2835), Rated bullet game, lichess.org, 2023.

5.e3 Nh6 6.c4 Nf5 7.Qh5 g6 8.Qf3=.

5.e4 de4 6.Qh5 g6 7.Qe2 Bg7 8.Ra2=.

5.Nc3 d5 6.e4 d4 7.Na4 e5 8.c3=.

5.d4 d5 6.e3 Nf5 7.Bd3 Be7 8.Nf3=.

5.e3 d5 6.c4 Be7 7.Nc3 Nf5 8.d4 +=.

5.e4 d5 6.Bd3 c5 7.c4 d4 8.Qh5=.

5.Nf3 Bc5 6.d4+/– Bb6 7.c4 d6 8.e3 Nd7 (8...e5 9.Nc3+/–) 9.Nc3 0-0 10.Bd3 Nf7 11.0-0 f5 12.Qc2 Nf6 (12...Ng5 13.Be2+/–) 13.e4 f4? (better is 13...Nh6+/–) 14.e5+- Ng4 (14...Nd7 15.Bh7 Kh8 16.Ne4+-) 15.h3 Ngh6 16.c5 dc5 17.Bh7 Kh8 18.dc5 Bc5 (18...Ba7 19.Ne4+-) 19.Ne2 Be7 (19...g5 20.Qc5 Kh7+-) 20.Nf4 g5 (20...Qe8 21.Rad1+-) 21.Rfd1 Qe8 (21...gf4 22.Rd8 Rd8 23.Bc1+-) 22.Nd5! Nf5 (22...ed5 23.e6 Double attack (23.e6 Passed pawn)) 23.Nc7 Kh7 24.Ne8 Re8 25.g4 1–0. Janek – Bedret, internet, 2018.

5.Nf3 d5 6.Nc3+=.

5.Nf3 d5 6.d4 c5 7.e3 c4 8.Nc3=.

4.Nc3 A) 4...d5 5.d4 (5.Nf3 e5 6.e3 Nc6 7.e4 de4 8.Ne4=; 5.e4 d4 6.Nce2 e5 7.Nf3 Be6 8.Nc1=; 5.e3 e5 6.d4 ed4 7.Qd4 Be6 8.Rd1=; 5.f4 c5 6.bc5 Bc5 7.e3 b5 8.Qh5=) 5...a5 6.b5 f5 7.Nf3 Bd6 8.e3=; B) 4...Ne7 5.e4 (5.Nf3 d5 6.e4 d4 7.Ne2 e5 8.c3=; 5.d4 Nbc6 6.Nf3 Ng6 7.e4 d5 8.Bd3+=; 5.e3 d5 6.Be2 e5 7.Nf3 Nbc6 8.0-0=; 5.f4 d5 6.e3 Nbc6 7.Nf3 e5 8.fe5=) 5...d5 6.d4 Nbc6 7.Nf3 Ng6 8.Bd3+=; C) 4...c5 5.bc5 Bc5 6.d4 Bb6 7.e4 Ne7 8.Qh5+=; D) 4...b5 5.e4 (5.d4 a5 6.ba5 Ra5 7.e4 Ba6 8.Nf3=; 5.e3 Bb7 6.e4 e5 7.Nf3 Nh6 8.d4+=; 5.Nf3 d5 6.e4 d4 7.Ne2 e5 8.c3=) 5...Bb7 6.d4 Qe7 7.Bd3 Qd6 8.e5+=; E) 4...a5 5.b5 (5.ba5 d5 6.e4 d4 7.Nb5 e5 8.a4+=) 5...d5 6.e3 Ne7 7.e4 d4 8.Na4=.

4.c4 A) 4...d5 5.e3 (5.c5 Ne7 6.e3 e5 7.d4 e4 8.Nc3=; 5.cd5 ed5 6.e3 Bf5 7.Nf3 Nc6 8.Nc3=) 5...dc4 6.Bc4 b5 7.Bb3 Ne7 8.Qh5+=; B) 4...a5 5.b5 (5.Qa4 Be7 6.Nf3 b6 7.b5 Bb7 8.d4+=; 5.ba5 e5 6.e3 Ne7 7.d4 ed4 8.Bd4=) 5...d6 6.e4 Ne7 7.d4 Ng6 8.Nf3+=; C) 4...Ne7 5.d4 (5.e4 d5 6.Qh5 g6 7.Qh4 Bg7 8.d4=; 5.e3 e5 6.d4 ed4 7.Bd4 Nbc6 8.Nc3=; 5.Nc3 d5 6.e3 a5 7.b5 c6 8.d4+=; 5.Nf3 d5 6.e3 a5 7.Qa4 c6 8.d4=) 5...d5 6.e3 Nbc6 7.Nf3 Nf5 8.Nc3+=; D) 4...b6 5.e4 (5.Nc3 e5 6.e3 Bb7 7.d4 ed4 8.ed4+=; 5.d4 c5 6.bc5 bc5 7.e3 Bb7 8.Nf3+=; 5.e3 Bb7 6.d4 c5 7.bc5 bc5 8.Nf3+=; 5.Nf3 Bb7 6.Nc3 e5 7.e4 a5 8.b5+=) 5...Bb7 6.Nc3 e5 7.Nf3 c5 8.bc5+=; E) 4...e5 5.Nc3 (5.e3 Ne7 6.d4 ed4 7.Bd4 Nbc6 8.Bc3=; 5.d4 ed4 6.Nf3 a5 7.Qa4 Ne7 8.Nd4=; 5.Nf3 a5 6.Qa4 e4 7.Nd4 Nc6 8.b5=; 5.e4 c5 6.bc5 Bc5 7.Qf3 Ne7 8.Qg3=) 5...Nh6 6.Nf3 Nf7 7.d4 d6 8.e4+=.

4.e3 a5 5.Bd3 (5.b5 d5 6.c4 c6 7.d4 cb5 8.cd5+=; 5.ba5 d5 6.Bd3 g6 7.e4 e5 8.ed5+=; 5.Qh5 g6 6.Qh4 ab4 7.Bd3 Bg7 8.ab4=) 5...Nh6 6.b5 e5 7.f4 d6 8.Nf3+=.

4.e3 b6 5.Qf3 c6 6.Nh3 Bb7 7.Nf4 Qc7 8.Qh5 Kd8 9.Qf7 Bd6 10.Qg7 Bf4 11.Qh8 Kc8 12.Bf6 Qd8 13.Bd8 1–0. ArgosZgZ – timotimo, lichess.org, 2018.

4.e3 d5 5.Nf3 (5.d4 Bd6 6.c4 dc4 7.Bc4 Nc6 8.Qh5+=; 5.c4 Nh6 6.Nc3 dc4 7.Bc4 Bd6 8.Qh5+=; 5.Nc3 a5 6.b5 Ne7 7.Be2 e5 8.Nf3=; 5.Be2 c5 6.bc5 Bc5 7.Nc3 b5 8.d4=) 5...e5 6.c4 Be6 7.cd5 Qd5 8.d4+=.

4.e3 d6 5.Be2 (5.Nc3 e5 6.Bc4 Ne7 7.Qh5 g6 8.Qf3+=; 5.Bd3 Ne7 6.Nf3 e5 7.0-0 d5 8.e4=; 5.Nf3 e5 6.d4 e4 7.Nfd2 f5 8.Be2+=; 5.d4 c5 6.Bd3 Nh6 7.bc5 dc5 8.Nd2+=) 5...e5 6.d4 Nd7 7.Bd3 g6 8.Nf3+=.

4.e3 e5 5.Nf3 (5.c4 Ne7 6.Qh5 g6 7.Qf3 Bg7 8.d4=; 5.e4 d5 6.ed5 Qd5 7.Nf3 Bg4 8.Nc3+=; 5.f4 d6 6.Bd3 Ne7 7.Ne2 Nd7 8.0-0+=; 5.d4 ed4 6.Bd4 Nc6 7.Bd3 Nd4 8.ed4+=) 5...d5 6.c4 Be6 7.cd5 Qd5 8.d4+=.

4.e3 Nh6 5.d4 (5.Qh5 Nf7 6.Nf3 d5 7.c4 a5 8.b5+=; 5.c4 a5 6.b5 Be7 7.Qh5 Nf7 8.d4+=; 5.Nf3 d5 6.Be2 e5 7.0-0 Be6 8.d4=; 5.Be2 d5 6.Nf3 e5 7.d4 e4 8.Nfd2=) 5...d5 6.c4 Be7 7.Nc3 0-0 8.Nf3+=.

4.e4 a5 5.b5 (5.ba5 d5 6.Nc3 d4 7.Nb5 e5 8.a4+=) 5...d5 6.Qh5 g6 7.Qe2 de4 8.Qe4+=.

4.e4 b5 5.c4 (5.Nc3 Nc6+=) 5...bc4 (5...a5 6.cb5 ab4 7.Bd3+/–) 6.Bc4+/– d6 (6...Bb7!?+/–) 7.Nf3 (7.Nh3 Qe7+-) 7...Nc6 8.b5?? (8.Nc3 Ne5 9.Ne5 de5+-) 8...Nb8?? (better is 8...Na5 9.d3 Rb8+=) 9.Nc3 (9.Nd4 e5 10.Bd5 Ra7+-) 9...Ra7? (9...ab5 10.Nb5 Ne7+-) 10.ba6 (10.Qb3 ab5 11.Be6 Be6 12.Qe6 Ne7+-) 10...Ra6 (10...Na6 11.Nd4 Rb7 12.Bb5 Rb5 13.Ndb5+-) 11.Ba6 (11.0-0 Ne7+-) 11...Na6 12.0-0 Nc5 (12...Ne7 13.d4+-) 13.Nd4 (better is 13.d4 Na6 14.Qd2+-) 13...Nd3?? (13...Ne7 14.Nb3+-) 14.Qc2 (14.Qh5 g6 15.Qb5 Kf7 16.Qd3 Ne7+-) 14...Ba6?? (14...Nb2 15.Rfb1+-) 15.Ndb5 (better is 15.Qa4 Qd7 16.Qa6+-) 15...Bb5?? (better is 15...Nb2 16.Qb2 c6+/–) 16.Nb5 Nf4 (16...Nb2 17.Nc7 Kf7 18.Rac1+- (18.Qb2?! Qc7 19.a4 d5+=)) 17.a4 (17.Nc7 Kf7 18.g3 Nd3 19.Ne6 Qe8 20.Qd3 Qe6+-) 17...c6 (17...Ne2 18.Kh1 Qc8 19.a5+-) 18.Nd4 (better is 18.Qc6 Kf7 19.a5 d5+-) 18...c5 (18...e5 19.g3 Qd7 20.gf4 (20.Nc6?! Qh3 21.gf4 Qg4 22.Kh1 Qf3 23.Kg1 Qg4 24.Kh1 Qf3 25.Kg1 Qg4=) 20...ed4 21.f5+- (21.Bd4?! Qg4 22.Kh1 Qf3 23.Kg1 Qg4 24.Kh1 Qf3 25.Kg1 Qg4=)) 19.Nb5 (better is 19.Nf3 Qc8 20.g3+-) 19...Qb6 (19...Qd7+-) 20.g3 Ne2 (20...Ng6 21.a5 Qb5 22.a6+-) 21.Kh1 d5 (21...e5 22.Qc4 Ne7 23.Qe2+-) 22.ed5 ed5 (22...Kf7 23.Rae1 Ng3 24.fg3 ed5 25.g4+-) 23.d4 (better is 23.Rae1+-) 23...Qe6 (23...Nd4 24.Bd4 cd4 25.Qc8 Kf7 26.Qd7 Be7+-) 24.Nc7 Kd7 25.Ne6 Ke6 26.Rfe1 (better is 26.Qe2 Kf7 27.Qh5 g6 28.Qd5 Kg7 29.dc5+-) 26...c4 27.Re2 (27.Qe2 Kd7 28.Qe8 Kc7 29.Qf8 c3 30.Qg7 Kd8 31.Bc3 Ne7 32.Re7 Re8 33.Ba5 Kc8 34.Re8) 27...Kf7+- 28.Qf5 g6 29.Qd7 Be7 30.Ba3 Nh6 (30...f5 31.Re7 Ne7 32.Qe7 Kg8 33.Qf8) 31.Qe7 Kg8 32.Qe8 (32.Qe8 Kg7 33.Re7 Nf7 34.Qf7 Kh6 35.Qf6 c3 36.Qh4; 32.Qf8) 1–0. bambinik – Annita, gameon.it, 2001.

4.e4 c5 5.bc5 Bc5 6.Qh5 Kf8 7.Qc5 Qe7 8.Qc8 1–0. mtra – Romulans, internet, 2002.

4.e4 c6 5.Nf3 (5.d4 d5 6.Nd2 a5 7.b5 Bd7 8.bc6+=; 5.Qh5 g6 6.Qh4 Bg7 7.Nf3 d6 8.Be2+=; 5.Nc3 d5 6.ed5 cd5 7.Bd3 Ne7 8.Nf3=; 5.Bd3 d6 6.Nf3 Be7 7.Nc3 e5 8.0-0+=) 5...b5 6.d4 a5 7.c3 ab4 8.ab4+=.

4.e4 Nc6 5.Nf3 (5.Bc4 Nh6 6.d4 Nf7 7.Nf3 d5 8.Bd3+=; 5.d4 d5 6.e5 Nh6 7.Nf3 Be7 8.Bd3+=; 5.Bd3 e5 6.Nf3 Nge7 7.c4 d6 8.0-0+=; 5.Nc3 d6 6.Nf3 Nge7 7.Bc4 d5 8.Bb3=) 5...e5 6.d4 d5 7.ed5 Qd5 8.Qe2+=.

4.e4 d5 5.e5 (5.Qh5 g6 6.Qe2 d4 7.e5 Bg7 8.ef6=; 5.ed5 ed5 6.Bd3 Nh6 7.Qh5 g6 8.Qf3=; 5.Bd3 c5 6.Qh5 g6 7.Qh4 c4 8.Be2+=; 5.Qe2 d4 6.e5 c5 7.Nf3 Nc6 8.c3=) 5...Bd7 6.Nf3 Be7 7.Be2 Nh6 8.ef6+=.

4.e4 d6 5.d4 (5.Nc3 Nc6 6.Nf3 e5 7.Bc4 f5 8.ef5+=; 5.Nf3 Be7 6.d4 c5 7.Bd3 Nc6 8.bc5+=; 5.Bc4 b5 6.Ba2 c5 7.Nh3 Nc6 8.Nf4+=; 5.Be2 e5 6.Nf3 f5 7.ef5 Bf5 8.d3+=) 5...Nc6 6.Nf3 Nge7 7.Bd3 Ng6 8.0-0+=.

4.Nf3 A) 4...d5 5.d4 (5.Nc3 e5 6.e3 Nc6 7.e4 de4 8.Ne4=; 5.e3 c5 6.bc5 Bc5 7.d4 Bd6 8.c4=; 5.Ra2 e5 6.e3 Be6 7.Be2 Nh6 8.0-0=; 5.d3 a5 6.b5 Qd7 7.Nc3 e5 8.e3=) 5...Qd7 6.e3 Bd6 7.c4 dc4 8.Bc4+=; B) 4...a5 5.c3 (5.ba5 d5 6.Nc3 Ra5 7.d4 Bd7 8.e4=; 5.b5 d5 6.Nc3 e5 7.e3 Bf5 8.Be2=) 5...d5 6.d4 Bd7 7.Nbd2 ab4 8.ab4+=.

4.d4 b5 (4...d5 5.Nd2+=) 5.e4 Qe7 (better is 5...c6!?+=) 6.Qh5+- Qf7 (6...g6 7.Qb5 Nb8 8.Qa5+-) 7.Qf7 Kf7 8.Bb5 Rb8 9.Nc3 Rb6 (9...c5 10.dc5 Nc7 11.Bc4+-) 10.Nf3 (10.Bd3 Nb8+-) 10...Nb4 (10...c6 11.Bd3+-) 11.ab4 Bb4 12.Bd3 Bd6 (12...a5 13.Ke2+-) 13.Ba3 (better is 13.Ra2+-) 13...Ra6 (13...a6+-) 14.Ba6 Ba6 (14...Ba3 15.Ra3 Ne7 16.Bd3+-) 15.Bd6 cd6 16.Ra6 Nh6 (16...Ne7 17.Ra7 Rd8 18.d5+-) 17.Nb5 Rb8 (17...Ke7 18.Nd6 Rb8 19.Ke2+-) 18.Nd6 Ke7 19.Ke2 Rb2 20.Rc1 Ng4 (20...Rb8 21.e5+-) 21.e5 fe5 22.de5 h5 23.Ra7 g5 24.Ra8 h4 25.Re8 1–0. marekt – redrock, internet, 2005.

4.e3 g5? (4...c5!?+=) 5.Nf3 (5.Qh5 Ke7+-) 5...h5 6.Be2 (6.Ng5!? e5 7.Nf3 Ne7+-) 6...g4 7.Nd4 e5 8.Nf5 d6 9.Ng3 h4 10.Ne4 f5 11.Nec3 h3 12.g3 Be6 13.0-0 Nf6 Black plans e4 14.d3 Qd7 15.d4 e4?? (better is 15...ed4 16.Nb5 d3 17.Bd3 Bg7+=) 16.d5+- Bf7 17.Bb5 Qb5 (17...c6 18.dc6 bc6 19.Ba6 Bg7+-) 18.Nb5 Bd5 (18...Bg7+-) 19.Bf6 c6 20.Bh8 0-0-0 21.N5c3 (better is 21.Qd4 Be6 22.Na7 Kc7+-) 21...Bh6 22.Nd5 Rh8 23.Ne7 Kd7 24.Nf5 Bg5 25.Qd6 Kc8 26.Ne7 (26.Qe6 Kb8 27.Qe5 Ka8 28.Qh8 Nb8 29.Qc8 a6 30.Nd6 Be3 31.Qb7) 26...Be7 27.Qe7 Nc7 28.Rd1 Re8 29.Qg5 (29.Qd7 Kb8 30.Qd8 Rd8 31.Rd8) 29...b5 30.Qg4 Kb7 31.Qh3 a6 32.Rd7 Kb6 33.Rc7! Kc7 (33...Kc7 34.Qh7 Pinning) 34.Qh7 Kb6 35.Nc3 (35.a4 ba4 36.Nc3 Re5 37.Na4 Kb5 38.Qb7 Kc4 39.Qc6 Kb4 40.Qc3 Kb5 41.Rb1 Ka4 42.Qb4) 35...Rc8 36.Qe4 Rc7 37.Rd1 (37.Qd4 Kb7 38.Ne4 c5 39.Nc5 Rc5 40.Qc5 a5 41.Rd1 Ka6 42.Qc7 ab4 43.Rd6) 37...a5 38.ba5 Ka5 (38...Kb7 39.Nb5 Ka6 40.Nc7 Kb7 41.Qb4 Kc8 42.Ne6 c5 43.Rd8) 39.Rd6 (39.Rd6 Ka6 40.Rc6 Kb7 41.Rc5 Kc8 42.Qe8 Kb7 43.Rb5 Ka6 44.Qa8 Ra7 45.Qc6) 1–0. Neumann,Frank – Dixon,Grant, RN–2012–0-00475, 2012.

4.e4+= Nb8 5.Bc4+=.

4.e4+= c5 5.Ba6+/– ba6 6.bc5 Qc7 7.Bd4 e5 8.Be3 Bc5 9.Bc5 Qc5 10.Nf3 Rb8 11.0-0 Bb7 12.d4 Qd6 13.Qd3 Ne7 14.de5 fe5?? 15.Qd6+- 0-0 16.Qe7 Be4 17.Nbd2 Bc2 18.Qd7 Rbd8 19.Qe6 Rf7 20.Ne5 Rdf8 21.Nf7 Rf7 22.Rac1 Bf5 23.Rc8 1–0. b4_player (2155) – ba2004, GameColony.com, 2002.

4.e3 a6!?+=.

4.e3 Bb7 5.Qh5+/– g6 6.Qb5 Ba6 7.Qa4 Ne7?? 8.Ba6+- (8.Ba6 Na6 9.Bf6+-) 1–0. Wall,Bill – Zahad, internet, 2000.

4.e3 Bb7 5.Qh5+/– g6 6.Qb5 Ba6 7.Qa4 Bf1 8.Kf1 a5+/–.

4.e3 Bb7 5.Qh5 g6 6.Qb5 Ba6 7.Qa4 Bf1 8.Kf1 Be7 9.Nf3 Nh6 10.Nd4 0-0 11.Qb3 (better 11.h4+-) 11...d5?? (better 11...Nf7+-) 12.Ne6+- Qe8 (12...Qd7 13.Nf8 Kf8 14.h4+-) 13.Qd5 (better 13.Nc7!? Qc6 14.Nd5 Kf7 15.Nf6 Qe6 16.Nh7 Qb3 17.cb3 Rc8+-) 13...c6 14.Qc4 (14.Qf3 Qf7 15.Nf8 Kf8+-) 14...Qd7 (14...Qf7 15.d3 Rc8 16.Nd2+-) 15.Nc5 (better 15.Nc7! Kg7 16.Na8 Qb7+-) 15...Qd5 16.Qd5 Nf7 (16...cd5 17.Nc3 Bc5 18.bc5 Rd8+-) 17.Qe6 a5 18.Bf6 (better 18.Qe7 Ng5 19.Qb7 Na6+-) 18...Bf6 19.Qf6 ab4 20.a4 (20.Ne6 ba3 21.Qg7) 20...Ra5 21.Ne6 Rf5 (21...Ra4 22.Qg7) 22.Qg7 1–0. MARYMARY – joelamar, ChessWorld.net, 2018.

4.e3 c6 5.Nf3 d5 6.d3 Nd7 7.Be2 Ne7 8.c4 a6 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 e5 12.0-0 c5 13.bc5 Bc5 14.d4 Be7 15.de5 fe5 (15...Bb7!?+/–) 16.Ne5 (16.Be5?! Ne5 17.Ne5 Qd1 18.Rfd1 Bf6+/–) 16...Bf6? (16...Ne5 17.Be5 Qd1 18.Rfd1+- (worse is 18.Rad1 Ba3 19.Bg7 Rg8+/–)) 17.f4?? (better is 17.Nf7 Kf7 18.Qd5 Ke8 19.Bf6 Nf6 20.Qa8+-) 17...0-0?? (17...Ne5 18.Qd8 (18.fe5?! Bg5 19.Bh5 g6+-) 18...Kd8 19.fe5+/–) 18.Nd7 (better is 18.Qd5 Kh8 19.Qa8+-) 18...Bd7 (18...Qd7 19.Bf6 Rf6 20.Bf3+/–) 19.Bf6 (better is 19.Qd5!? Kh8 20.Bf6 gf6 21.Rad1+-) 19...Rf6+/– 20.Bf3 Rb8 21.g3 g6 (21...Qe8 22.Qd4+=) 22.e4 Kg7 23.e5 Re6 24.Bg4 Re7 25.Bd7 Rd7 26.Qb3 Rbb7 27.Rad1 Rd1 28.Rd1 Rd7 29.Rd7 Qd7 30.Qb4 (30.h4 Qd4 31.Kg2 h6+-) 30...Kf7 31.Qd6?? (31.Qc3+/–) 31...Qe6?? (better is 31...Qd6 32.ed6 a5-+) 32.Qe6+- Ke6 33.Kf2 a5 34.Ke3 b4? (34...Kd5 35.Kd3+-) 35.Kd3 (better is 35.ab4 ab4 36.Kd4+-) 35...ba3 36.Kc3 a2 (36...a4 37.Kc2 a2+-) 37.Kb2 a1Q 38.Ka1 h6 39.Ka2 g5 40.Ka3 gf4 41.gf4 Kf5 42.Ka4 Kf4 (42...h5 43.Ka5 h4 44.Kb6+-) 43.e6 h5 (43...Kg4 44.e7 Kh3 45.e8Q Kh2 46.Qh5 Kg3 47.Qh6+-) 44.e7 Kg4 45.e8Q Kh3 46.Qh5 Kg2 47.h4 Kh3 48.Qg5 Kh2 49.h5 (49.h5 Kh3 50.h6 Kh2 51.h7 Kh3 52.h8Q) 1–0. Fournier,Frederic (1925) – trancadis, Active, 2008.

4.e4 c5 5.bc5+/– Bc5?? (better is 5...Bb7+/–) 6.Qh5+- g6 7.Qc5 Ba6 (7...a6 8.a4 d6 9.Qa3 ba4 10.Nf3+-) 8.Nc3 d6 9.Bb5 Nd7 (9...Bb5 10.Qb5 Qd7 11.Rb1+-) 10.Qd6 Bb5 11.Qe6 Ne7 (11...Kf8 12.Nb5 Rb8 13.a4+-) 12.Nb5 Nc5 (12...Qb6 13.Nd6 Kd8 14.Nf7 Kc7 15.Qb6 ab6 (15...Nb6?? 16.Nh8 Rh8 17.Bf6+-) 16.Nh8 Rh8+-) 13.Nd6 Qd6 14.Qd6 Nd7 15.Bf6 Kd8 16.Be7 Kc8 17.Qc6 Kb8 18.Bd6 1–0. b4_player (2220) – EchekK, GameColony.com, 2003.

4.e4 c6 5.Nf3 (5.e5 d5+=) 5...e5 (5...a5 6.a4=) 6.Nh4 (6.d4 ed4 7.Bd4 a5+=) 6...Nh6= 7.c4 (better is 7.d4 ed4 8.Qd4=) 7...g6? (better is 7...bc4!? 8.Bc4 d5 9.ed5 cd5=) 8.cb5+/– f5 (8...d5 9.bc6 Nc6 10.Bb5+/–) 9.Nf3 Bd6? (better is 9...d6!? 10.Nc3 fe4 11.Ne4 Bf5+-) 10.Ne5+- cb5 (10...Be5 11.Be5 0-0 12.Bd6+-) 11.Ng4 (11.Ng4 Ng4 12.Bh8+-) 1–0. Wall,Bill (2365) – MajCoffee (2335), Microsoft Gaming Zone, 1999.

4.e4 e5 5.Bb5 a5 +/–.

4.e4 e5 5.Nc3 a6+= 6.Nf3 d6 7.Bd3 c5 8.0-0 c4 (8...Be6!?+=) 9.Be2+/– Bg4 (9...Nc6 10.d3 cd3 11.Qd3+/–) 10.a4 Bf3 11.Bf3 ba4 12.Ra4 Nc6 (12...Nd7 13.Re1+/–) 13.Nd5 (better is 13.Be2+-) 13...g5?? (better is 13...Nce7+-) 14.Bh5 Kd7 15.Qg4 f5 16.Qf5 1–0. marekt – dunk0104, ChessWorld.net, 2012.

4.e4 e5 5.Nf3 a5 6.c3 Bb7 7.d3 (7.Bb5 Be4 8.Qe2 Bg6+=) 7...ab4 8.cb4 Bd6 9.Be2 Nc6 10.0-0 Nh6 11.Re1 Qe7 12.d4 Qf7 (12...Nd4!? 13.Nd4 ed4 14.Bd4 c6+=) 13.d5 Na7 14.Nbd2 (better is 14.Bc1+/–) 14...Qg6? (14...0-0 15.a4+=) 15.Nh4?? (better is 15.Ne5 Be5 16.Be5+-) 15...Qf7+/– 16.Bh5 g6 17.Be2 c6 18.dc6 Qe7?? (better is 18...Bc6 19.Bc1 Be7+=) 19.cb7+- Rb8 20.a4 Rb7 21.a5 Bb4 22.a6 Rc7 23.Rf1 0-0 24.Bg4 Rc6?? 25.Ndf3 Ng4= 26.h3 Nh6 27.Kh1 f5 28.Ne5+/– Re6 29.Rc1?? Re5 30.Be5+= Rd8? 31.Nf3+/– Qe6? 32.Bd4 Nc6 33.a7 Ra8 34.Ng5 Qe7 35.Qb3 Kf8 36.Kh2 Na5?? 37.Qd5 Nc6 38.Bc5 Bc5+/– 39.e5?? Qg5 40.Qc5 Ke8?? 41.e6+/– Qf6? 42.ed7+- Kd8 43.Rfe1 Qf7 44.Qc6 Qd7 45.Qa8 Qc8 46.Qc8 1–0. pieeater – dumbroad, ChessWorld.net, 2013.

4.c4 Bb7= 5.Nf3 Qe7 6.d4 a6 7.Nbd2 d5 8.c5 bc5 9.dc5 Nc6 10.e3 Nh6 11.Bd3 Ng4 12.0-0 g6 13.Ne1 Bh6?? 14.Qg4+- Ne5 15.Be5 fe5 16.Nef3 e4 17.Nd4?? ed3 18.Qe6 Qe6+/– 19.Ne6 a5?? 20.Nc7+- Kf7 21.Na8 Ba8 22.b5 d4 23.Nb3 de3 24.fe3 Kg7 25.c6 Be3 26.Kh1 h5 27.Na5 d2 28.b6! Bb6 29.Nc4 Bc6 30.Nb6 Rb8 31.Rab1 Kh6 32.Rfd1 Rd8 33.a4 Be4 34.Rb2 1–0. bentengutama (1955) – maf (1770), net–chess.com, 2003.

4.c4 c5 5.b5 d5 6.e3 e5 (better 6...Bb7!?+-) 7.Nc3 d4 8.Qh5 (8.Qf3 dc3 9.Bc3 Nc6+-) 8...g6+- 9.Qf3 dc3 10.Bc3 Qc7 (10...Nc6 11.bc6 Qc7 12.Ne2+-) 11.Qa8 Ne7 12.h4 Bh6 (12...h5 13.Bd3+-) 13.h5 g5 14.Bd3 (14.Qf3 0-0+-) 14...0-0 (14...g4 15.Ne2 0-0 16.Be4+-) 15.Qf3 f5 (15...Qd6 16.Bb1+-) 16.Qg3 e4 (16...f4 17.ef4 ef4+-) 17.Qc7 (17.Qc7 Nd7 18.Qd6+-) 1–0. Pierre – GuestWileu, internet, 2020.

4.e3 a5 5.ba5 Ra5 6.c4 c6 7.d4 e5 8.de5 fe5 9.Be5?? Re5-+ 10.f4? Re3 11.Be2 g5 12.Kf1?? Qf6-+ 13.Bh5 Kd8 14.Ra2 Qf4 15.Rf2 Qc4 16.Be2 Qe4 17.Rf8 Ke7?? 18.Rc8+/– Qf4 19.Ke1 Nf6?? 20.Rh8 Na6 21.Nd2 Nc5 22.Ngf3 Nd3 23.Kf1 Nb2 24.Qb1 Na4 25.Qb4 Nc5 26.Qf4 gf4+-. undergearmalaysia – xodinho, net–chess.com, 2003.

4.e3 Ba6 5.Ba6 Na6 6.Qh5 g6 7.Qe2 Nb8 8.Nc3 (8.Nf3 a5 9.b5 Bg7+=) 8...Bg7 9.b5 (9.Nf3 Ne7+=) 9...c6 (9...a6 10.a4=) 10.Nf3+= c5 (10...Ne7 11.bc6 Nbc6 12.Rb1+=) 11.0-0 (better 11.d4+=) 11...e5 (better 11...d5!?+=) 12.d4+- Ne7 (12...a6 13.Rfd1+-) 13.de5 fe5 14.Rfd1 d6? (better 14...Qc7+-) 15.Ng5 Qd7 (15...Nf5 16.Ne6 Qc8+-) 16.Qf3 Rf8 (16...Nec6 17.bc6 Nc6 18.Rd6 Qd6 19.Qf7 Kd8+-) 17.Qa8 Qf5 (17...h6 18.Qb8 Qc8 19.Qa7 hg5+-) 18.Nce4 d5 19.Qb8 Nc8 20.Nd6 (20.Rd5 Qg5 21.Ng5 Rh8 22.Qc8 Ke7 23.Qe6 Kf8 24.Rd8) 20...Kd7 (20...Kd8 21.Nf5 d4 22.ed4 cd4 23.Bd4 ed4 24.Nd4 Ke8 25.Nc6 Bf6 26.Qc8 Bd8 27.Rd8) 21.Qb7 Kd6 (21...Kd8 22.Nf5 Rf5 23.Rd5 Nd6 24.Qb8 Ke7 25.Qd6 Ke8 26.Qd8) 22.Rd5 1–0. Pierre – Playmaster, internet, 2020.

4.e3 Bb7 5.Nf3 a5 6.b5+=.

4.e3 Bb7 5.Nf3 Nc6 6.c4 (6.Be2 Bd6+=) 6...Qe7 (6...Nge7 7.d4+=) 7.g3 (7.d4 0-0-0+=) 7...0-0-0 (7...Ne5 8.Be5 fe5 9.d3=) 8.Be2 (8.d4 g5+=) 8...g5 9.Ng5 Ne5 (9...Nb4!? 10.ab4 Bh1+=) 10.0-0 h5 (10...h6 11.Nh3+/–) 11.Nf3 (11.Qa4 Bg7 12.Be5 fe5+/–) 11...Nf3 (11...Bf3 12.Bf3 Nc4 13.Bd4=) 12.Bf3+/– d5 (12...h4 13.Bb7 Kb7 14.Nc3+=) 13.cd5 ed5 (13...Bd5 14.h4+/– (14.Bh5 Qh7-/+)) 14.Nc3 (14.h4 Nh6+-) 14...h4+/– 15.Qa4 (15.Rc1 Kb8+-) 15...Kb8 16.Nb5 a6 17.Nd4 hg3 (17...Qh7 18.g4+-) 18.fg3 Qh7 19.Rf2 b5 (19...Bd6 20.b5 a5 21.Qc2+-) 20.Qa5 Bd6 (20...Rd6 21.a4 ba4 22.b5 ab5 23.Ba3+-) 21.a4 Bg3 (21...ba4 22.b5 ab5 23.Nb5 Bc5+-) 22.hg3 Qh2 (22...ba4 23.Qa4 Qg6+-) 23.Rh2 (23.Rh2 Rh2 24.Kh2 ba4 25.b5+-) 1–0. Janek – Tyzkus, internet, 2017.

4.e3 Bb7 5.Nf3 Nh6 6.c4 Nc6 7.Be2 Ne7 8.Nc3 Neg8 9.0-0 Bd6 10.d4 Ng4 11.h3 N4h6 12.Qc2 Qe7? (better is 12...a5 13.c5 Be7+/–) 13.c5+- bc5 14.bc5 Bf3 (14...Bc5 15.dc5 Qc5 16.Rfc1+-) 15.Bf3 (15.gf3?! Bc5 16.dc5 Qc5+-) 15...Rb8 16.cd6 Qd6 17.a4 Nf5 (17...Qb6 18.Ba3 c6 19.Bh5 Kd8 20.Bd6+-) 18.Ba3 Qa6 19.Nb5 Rc8 (19...Qc8 20.Nc7 Kf7 21.Rfb1+-) 20.Nc7 Kf7 21.Rfc1 Qa5 22.Rab1 Nh4 (22...a6 23.Bb4 Qb6 24.Bd2+-) 23.Bb7 Rb8 (23...Rc7 24.Qc7 Qc7 25.Rc7+-) 24.Rb5 1–0. Janek – Henry, internet, 2016.

4.e4 Bb7 5.Nc3 Ne7+=.

4.e4 e5 5.Nf3 Bb7 6.d4 Be4 7.de5 Bf3 8.Qf3 c6 9.b5 Qc7 10.ef6 gf6 11.Bf6 Nf6 12.Qf6 Rg8 13.g3 Be7 14.Qf3 Rf8 15.Qh5 Rf7 16.Bd3 Kd8 17.Qf7 Qe5 18.Be2 Qa1 0–1. Galagus – footyhead, playchess.de, 2002.

4.Nf3 Bb7 5.e3 Nh6 6.c4 e5 7.d3 c5 8.b5 Bd6 9.Nc3 0-0 10.Be2 Nf5 11.0-0 g5 (11...a6 12.Qb3+=) 12.e4 Nd4 13.Nd5 Qe8 14.Nd4 cd4 15.Bh5 Qd8 16.Qg4 Bd5 17.cd5 a6 18.a4 Bc5 19.h4 d6 20.hg5 fg5 21.Bc1 Ra7 (21...Qd7 22.Qe6 Qe6 23.de6 d5 24.Bg5 de4+-) 22.Bg5 Qd7 23.Qg3 (23.Qe6 Qe6 24.de6 d5 25.ed5 Rf5 26.Bf7 Kg7+-) 23...Kh8 (23...Qg7 24.Bg4 h6 25.Bd2+-) 24.f4 Qg7 25.fe5 de5 26.Rf8 Qf8?? (26...Bf8 27.Rf1 Nd7+-) 27.Qe5 Qg7 (27...Rg7 28.Rf1 Qd6+-) 28.Bf6 (28.Bf6 Qf6 29.Qf6 Rg7 30.d6+-) 1–0. Fournier,Frederic (1940) – pirralo (1620), Active, 2011.

4.Nf3 d5 5.e3=.

4.Nf3 e5 5.e3 (5.e4 a5 6.b5 Bb7+=) 5...d5= 6.Bb5 (6.c4 e4 7.Nd4 c5 8.bc5 bc5+=) 6...Bd7 (6...c6 7.Be2=) 7.Bd7 Qd7 8.0-0 (8.Nc3 c6=) 8...e4 (8...a5 9.Nc3=) 9.Nd4 (9.Ne1 Bd6=) 9...Ne7 (9...c5 10.bc5 bc5 11.Nb3=) 10.d3+= Nbc6 (10...c5 11.bc5 bc5 12.Nb3+=) 11.Nd2 (11.de4 de4 12.Qh5 Ng6+/–) 11...0-0-0 (11...Nd4 12.Bd4 Qf5 13.de4 de4 14.c4+/–) 12.Nc6 (12.de4 de4 13.Ne4 Nd4 14.Bd4+/– (14.Qd4? Qc6 15.Qc3 Qe4-/+)) 12...Qc6+= 13.d4 (13.a4 Qe8+=) 13...Nf5 14.Rc1 (14.c4 dc4 15.Qe2 Qd5+=) 14...Nh6 (14...b5!?=) 15.c4+/– f5 16.cd5 (16.b5 Qe6+/–) 16...Qd5+= 17.Qa4 Kb8 18.Qc6 (18.b5 Bd6+=) 18...Qc6 19.Rc6 Bd6 20.Rfc1 (20.Nc4 Ng4 21.f3 Nh2 22.Rd6 Nf1 23.Rd8 Rd8 24.Kf1 c6+/–) 20...Rd7 (20...Ng4 21.h3 Nf6 22.b5+=) 21.Nc4 Be7? (better is 21...Nf7+=) 22.Ne5+- Rd6 (22...Rhd8 23.Nd7 Rd7 24.f3+-) 23.Rc7 Bd8?? (23...Re8+-) 24.Rg7 Rg8 (24...Ng4 25.Nc6 Rc6 26.Rc6+-) 25.Nd7 (better is 25.Rh7!? Ng4 26.Nc6 Rc6 27.Rc6 Rf8+-) 25...Rd7 (25...Rd7 26.Rd7 Ng4 27.Rh7 Rg6+-). BCC – BIGAL 1971, ChessWorld.net, 2005.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa5 (7...d5 8.e3=) 8.Nc3 Bd6 (8...d5!?=) 9.e3 Ne7 (9...Bc7!?+=) 10.Ne4+- Qc7 (10...Bc7 11.Bc3 Qa7 12.Qh5 Kd8 13.Qc5+- (13.Nc5?! g6 14.Qh6 Qc5=)) 11.Qh5 Kf8 12.Bf6 (better 12.Nf3!?+-) 12...gf6= 13.Qh6 Ke8 14.Nf6 Kd8 (better 14...Kf7!? 15.Nh7 Be5+=) 15.Qg7+- The mate threat is Qxh8 15...Qa5?? (better 15...Ng6 16.Nh7 Rh7 17.Qh7 Nf8+-) 16.Qh8 Kc7 17.Ne8 Kb6 18.Nd6 Nd5 19.Nc8 (19.Qd8 Ka7 20.Qa5 Na6 21.ba6 ba6 22.Qc5 Nb6 23.Nc8 Ka8 24.Qb6 d5 25.Qa7) 19...Kc7 20.Nf3 (better 20.e4 Nb6 21.Nb6 Qb6 22.Nf3+-) 20...Nb4 21.Bd3 (21.b6 Qb6 22.Nb6 Nc2 23.Kd1 Kb6 24.Qb8 Ne3 25.de3 c4 26.Qd6 Kb5 27.Nd4 Ka5 28.Qc7 Ka6 29.Bc4 Ka7 30.Kd2 d5 31.Ra1) 21...Nd3 22.cd3 Qb5 23.Ke2 c4 24.Rc1 Nc6 25.Rc4 b6 26.Na7 Qa6 27.Nc6 dc6 28.Qh7 Kd6 (28...Kb8 29.Ne5 c5 30.Nc6 Kc8 31.Rg4 Qd3 32.Kd3 c4 33.Ke4 c3 34.Rg8) 29.Rd4 Kc5 30.Qe7 Kb5 31.Qb4 1–0. aravind555 – Vil_Coyote, lichess.org, 2018.

4.b5 b6 5.e3 Bb7 6.c4 Ne7 7.Nf3 Ng6 8.g3 (8.Bd3!?+=) 8...d5 9.Bg2 dc4 10.0-0 Be7 (10...Qd7 11.Qc2=+) 11.Qc2 0-0 12.Qc4 Ne5 (12...Qd6!?=) 13.Be5 (13.Ne5 Bd5 14.Qg4 fe5+/–) 13...fe5 (13...Bd5 14.Qg4 fe5 15.Ne5 Rf6+/–) 14.Qe6+- Kh8 15.Ne5 Bg2 16.Kg2 Qe8 (better is 16...Bf6+-) 17.Nc3 Rf6? (17...Bf6 18.Qe8 Re8 19.f4 Be5 20.fe5+-) 18.Qg4 (better is 18.Qd5 Na6 19.ba6 Rd8+-) 18...Qb5?? (18...Bd6 19.Qe4 Nd7 20.Nd7 Re6+-) 19.Nd5 (19...Qe8 20.Qe4+-; better is 19.Nb5 Na6 20.Qd7+-) 1–0. slavisa11 – Timberwolf, caissa.com, 2004.

4.b5 c4 5.e3 d5 6.d3 Qa5 7.Nc3 d4? (better is 7...cd3 8.Bd3 Ne7=) 8.ed4+- cd3 9.Bd3 Qd8 10.Nf3 e5 (better is 10...Bd6+-) 11.de5 Bf5 (11...Nd7 12.Qe2 Be7 13.Rd1+-) 12.ef6 (better is 12.Bf5 Nd7 13.Bd7 Qd7 14.Qd7 Kd7 15.0-0-0 Ke8 16.Rhe1+-) 12...Qf6 13.0-0 g5 (13...Ne7+-) 14.Re1 Ne7 15.Rb1 Rg8 (15...Bd3 16.Nd5 Qd6 17.Qd3 Nd7 18.Bh8 0-0-0 19.Qc4 Nc5 20.Ne7 Be7+-) 16.Nd5 Qd6 17.Nf6 Kd8 18.Ng8 Ng8 (18...Bd3 19.Re3 Kc8 20.Rd3+-) 19.Bf5 Nh6 20.Ng5 Qd1 21.Rbd1 Kc7 22.Ne6 Kb6 23.Bd4 (23.Be4!? a6+-) 23...Kb5 24.Nc7 Ka4 25.Bh7 (25.Bc3 Nc6 26.Re4 Nd4 27.Rdd4 Bb4 28.Rb4 Ka3 29.Ra4) 25...Nf7 26.Na8 (26.Bc3 Bd6 27.Re4 Bb4 28.ab4 a5 29.Ra1) 26...Nd6 27.Ba7 Nc6 28.Bc5 Nc4 29.Re4 (better is 29.Bf8 N6e5+-) 29...Bc5 30.Rc4 Kb5 31.Rc5! Kc5 32.g4 Ne5 33.g5 (better is 33.Be4 Nc4+-) 33...Nf7 34.g6 Nh6 35.Rd3 Nf5 36.Rd7 b6 37.g7 Kc6 38.g8Q (38.Bf5 Kb5 39.g8Q Ka5 40.Ra7 Kb5 41.Qd5) 38...Kd7 39.Nb6 (39.Bf5 Kd6 40.Qg7 Kd5 41.Qc7 b5 42.Nb6 Kd4 43.c3) 39...Kc7+- 40.Bf5 Kb6 41.Qc8 Ka5 (41...Kb5 42.Qc7 Ka4 43.Qb6 Ka3 44.Qb3) 42.Qb7 Ka4 43.Qb4 1–0. retiponziani – primemover, ChessWorld.net, 2012.

4.e3 cb4 5.Bd3 ba3 (5...g6 6.ab4 Bb4 7.Qf3=+) 6.Na3 (better 6.Ba3 Ne7 7.Nc3=) 6...Ne7 (better 6...Nh6!?=+) 7.Bf6+= gf6 8.Qh5 Ng6 9.Bg6 hg6? (better 9...Ke7+-) 10.Qh8+- Qe7 11.Nf3 (better 11.Nb5 Na6 12.Ra6 ba6 13.Nc7 Kd8 14.Na8+-) 11...b6 (better 11...Na6+-) 12.Nb5 Qc5 (12...Kd8 13.Nh4 Qg7 14.Qg7 Bg7 15.Ng6+-) 13.c4 (13.Ra7?! Ra7 14.Na7 Ba6 15.Qf6 Qc2+-; 13.Na7 Kf7 14.Nd4 Ba6+-) 13...Nc6 (13...Kf7 14.Nh4 Bb7 15.Qh7 Ke8 16.Qg6 Ke7+-) 14.Qf6 (better 14.Nc7 Kf7 15.Na8 Qc4 16.Qh7 Bg7 17.h4+-) 14...Ne7 (14...Be7 15.Qh8 Kf7+-) 15.Ng5 Qf5 (15...d5 16.Qf7 Kd7 17.Qe6 Ke8 18.Nd6 Qd6 19.Qd6 Bg7+-) 16.Nd6 (16.Nd6 Kd8 17.Nf5 ef5 18.Nf7 Ke8 19.Nd6 Kd8 20.Qf8 Kc7 21.Qe7 a6 22.Qe5 a5 23.Nb5 Kb7 24.Qd6 g5 25.c5 Rb8 26.Qb6 Ka8 27.Nc7) 1–0. Pierre – The_Winner, internet, 2020.

4.e3 d5 5.Qh5 g6 6.Qh4 Be7 7.bc5+= Bc5 8.Bd3 Kf7 9.Nf3 Na6 10.c4 dc4 11.Bc4 g5?? 12.Ng5!+- fg5 13.Qh5 Ke7 14.Bh8 (14.Bh8 h6 15.h4+-) 1–0. jnunes (1760) – Clyde Barrow (1745), internet, 2007.

5.d4 Bb6 6.e4 e5 7.Bc4 ed4 8.Qh5 g6 9.Qd5 Nh6? (better is 9...Qe7+/–) 10.Bc1+- (10.Bd4?! Bd4 11.Qd4 Nc6+/–) 10...Ng4?? (10...g5 11.Bg5! fg5 12.Qe5 Qe7 13.Qh8 Qf8 14.Qe5 Qe7+-) 11.Qf7 1–0. kamret (2190) – crytostars, GameColony.com, 2003.

5.e3 d5 6.Nc3=.

5.e3 d5= 6.Bd3 Nc6 (6...Nh6 7.Qh5 Nf7 8.Nc3= (8.Bh7? Nd7-+)) 7.Qh5+= Ke7 8.Nf3 (8.Bh7 e5+=) 8...Nh6 9.Nc3 Qe8 (9...e5 10.e4 d4 11.Nd5 Kd6 12.Bc4=) 10.Qh4 Kd8 11.0-0 e5 (better is 11...Qd7!?+=) 12.Nd5+/– Nf5 13.Bf5 Bf5 14.d4 Be7 (14...ed4 15.ed4 Be7 16.Ne3+-) 15.Ne7 Qe7 16.d5 Nb8 (16...g5 17.Qa4 Nb8 18.e4+-) 17.d6! Qf8 (17...Qd6 18.Rad1) 18.Ne5 Nd7 19.e4 g5 20.Nd7 Bd7 (20...Kd7 21.Qg3 Be4+-) 21.Qg3 h5 22.Qf3 Rh6 23.e5 g4 (23...Rc8 24.Rfe1 Bg4 25.Qb7 fe5 26.Qa7 Qd6 27.Be5 Qd7 28.Qa5 Ke7+-) 24.Qb7 Rc8 25.ef6 Rf6 (25...Qd6 26.Rad1 Qc6 27.Qb3+-) 26.Bf6 Qf6 27.Qa7 Qd6 28.Rfd1 Qc6 (28...Qc7 29.Qd4 Qc6 30.Qh8 Kc7 31.Qh5+-) 29.Qa5 (better is 29.Rab1+-) 29...Qc7 (29...Ke7 30.Re1 Kf8+-) 30.Qg5 Ke8 31.Re1 (31.Re1 Be6 32.Qg8 Ke7 33.Re6 Kd7 34.Qf7 Kd8 35.Re8) 1–0. Trkn – dwqa, ICC, 2005.

5.e3 d5 6.Qh5 g6 7.Qh4=.

5.e3 g6 6.Nc3 a6 7.Nf3 e5 (7...d5 8.Be2+=) 8.d4+/– Bd6? (better is 8...ed4 9.Nd4 Nc6+/–) 9.Ne4+- Qa5 (9...Be7 10.de5 b5 11.Qd5+-) 10.Bc3 Qd5 11.de5 (worse is 11.Nd6 Qd6 12.de5 Qe6+-) 11...Qd1 (11...Qe4 12.ef6 (12.ed6?! b5+-) 12...Nh6 13.Qd6+-) 12.Rd1 Be5 (12...Ba3 13.Ra1 Bf8 14.Nf6 Kd8 15.Ba5 Ke7 16.Bb4 d6 17.Nd5 Kd8 18.Ba5 b6 19.Bb6 Kd7+-) 13.Ne5 Nc6 14.Nd6 Ke7 (14...Kf8 15.Nec4 b5 16.Nb6+-) 15.Nef7 Nh6 16.Nh8 b5 17.h4 Bb7 (17...Rb8 18.Ne4 Ng4 19.Be2+-) 18.Ng6! Kd8 (18...hg6 19.Nb7) 19.Nb7 Kc7 20.Nf4 Kb7 21.Rd7 Kc8 22.Rh7 Nf5 23.h5 Nce7 24.g4 Nd6 25.Re7 Nc4 26.h6 Ne3 (26...Ra7 27.Ra7 Nb6 28.h7 Kb8 29.h8Q Ka7 30.Rh7 Nd7 31.Rd7 Kb6 32.Qf6 Kc5 33.Bd4) 27.h7 Nc2 (27...Kd8 28.Bf6 Nc2 29.Kd2 Na3 30.h8Q) 28.Kd2 Kd8 29.Bf6 Ra7 (29...Na3 30.h8Q) 30.h8Q 1–0. pierre – dimiton, internet, 2008.

6.Bc3 Nc6 7.d4+= Bd6 (7...Bf8 8.d5 Nce7 9.de6 de6 10.Bb4=) 8.Nf3 (8.Bd3 Nh6+=) 8...a5 (8...Nge7 9.Nbd2+=) 9.Bd3 f5?? (better is 9...Be7+=) 10.d5!+- Nb4 (10...ed5 11.Bg7 Discovered attack (11.Bf5 Deflection)) 11.Bg7 (11.Bg7 Nd5 12.Bh8+-) 1–0. Wall,Bill – Tudor, internet, 2003.

6.Bc3 d5 7.Bd3=.

6.Bc3 d5= 7.d4 Bd6+= 8.Nd2 e5 (better is 8...Ne7!?+=) 9.de5+/– fe5 10.Be5 Be5 11.Qh5 Kd8? (better is 11...Qg6!? 12.Qe5 Ne7+/–) 12.Qe5+- Nd7 (12...Qe6 13.Qg7 Qf6 14.Qf6 Nf6 15.Ngf3+-) 13.Qd5 Qb2 (13...Ngf6 14.Qg5 Qc5 15.Qg7+-) 14.Qd4 (14.Rd1!? Qc2 15.Ngf3 Ngf6+-) 14...Qd4 15.ed4 Ne7 (15...Nh6 16.0-0-0+-) 16.Bd3 (16.Ngf3 Nf6+-) 16...Rb8 (16...Nf6 17.Ngf3+-) 17.Ne2 (17.Ne4 Nb6+-) 17...b5 (17...Nf6 18.f3+-) 18.0-0 b4?! (18...Nf6+-) 19.Rfe1 (19.ab4 Rb4 20.Rfe1 Re8+-) 19...Nd5 20.Ne4 (20.ab4 Nb4 21.Nf4 Nd3 22.Ne6 Ke7 23.cd3 Kf6+-) 20...b3 (20...Rf8 21.Nd6+-) 21.cb3 Rb3 (21...Rb6+-) 22.Bc4 Ne3 (22...Rb2 23.Bd5 Rf8+-) 23.Bb3 Re8 (23...Nf5 24.Ng5 Kc7 25.Rec1 Kb8 26.Be6+-) 24.Nd6 Re7 25.Nc3 (better is 25.Nc8 Kc8 26.Ng3 Nf6 27.Rac1 Rc7 28.fe3 a5+-) 25...Nd1 26.Rad1 Ba6 27.Nce4 Nb6 28.Nc5 (better is 28.Rc1 Bb7 29.Nf7 Rf7 30.Bf7 Bd5 31.Bd5 Nd5+-) 28...Be2 29.Rc1 (better is 29.Ncb7 Kd7 30.Nf5 Kc7+-) 29...a5 30.Be6 (30.Nf5 a4 31.Ne7 ab3 32.Re2 g6 33.Nc6 Kc8 34.Re7 b2 35.Na7 Kb8 36.Rce1 Nd7 37.Rd7 b1Q 38.Rb1 Ka8 39.Nc6 g5 40.Rb8) 30...Kc7 31.Nf5 Re8 32.Ng7 Rf8 33.Nd7 (33.Nd7 Kb7 34.Nf8+-) 1–0. mtra – lebucher1, internet, 2002.

6.Bc3 d5= 7.Qg4 Kf7 8.Nh3 Nc6+=.

6.Bc3 d5 7.Qh5 g6 8.Qf3=.

6.Nc3!? Qb2 7.Bb5+=.

4.Nc3 A) 4...d5 5.d4 (5.e4 d4 6.Nce2 e5 7.c3 dc3 8.dc3=; 5.Nf3 e5 6.e4 d4 7.Na2 a5 8.Ne5=; 5.e3 e5 6.Be2 b5 7.a4 Bb4 8.ab5=; 5.h3 e5 6.e3 Bd6 7.Nf3 Ne7 8.Be2=) 5...Bd7 6.e4 a5 7.b5 cb5 8.ed5=; B) 4...e5 5.e4 (5.d4 d5 6.e4 a5 7.b5 ed4 8.Qd4+=) 5...d5 6.d4 a5 7.b5 ed4 8.Qd4+=; C) 4...b5 5.e4 (5.e3 a5 6.Qh5 g6 7.Qh4 ab4 8.ab4=; 5.Nf3 a5 6.ba5 d5 7.e4 Ra5 8.d4=; 5.d4 a5 6.ba5 Qa5 7.e4 d5 8.e5=; 5.Ra2 d5 6.e3 e5 7.d4 e4 8.f3=) 5...a5 6.ba5 d5 7.Nf3 Ra5 8.d4=; D) 4...d6 5.d4 (5.e4 d5 6.ed5 ed5 7.Nf3 b5 8.Be2+=; 5.Nf3 e5 6.e4 Ne7 7.d4 Ng6 8.d5+=; 5.e3 e5 6.d4 ed4 7.Qd4 Nd7 8.Be2+=; 5.Rb1 b5 6.e4 a5 7.Qh5 g6 8.Qe2=) 5...Nh6 6.e4 Be7 7.Nf3 0-0 8.Bd3+=; E) 4...a5 5.b5 (5.ba5 d5 6.e4 Qa5 7.ed5 ed5 8.Nf3=) 5...d5 6.e3 e5 7.Be2 Bd6 8.Nf3=.

4.c4 a5 5.b5 (5.ba5 d5 6.e3 Qa5 7.cd5 ed5 8.Bd3=; 5.c5 d6 6.e3 ab4 7.ab4 Ra1 8.Ba1+=; 5.Qa4 d5 6.b5 Bd7 7.cd5 ed5 8.Nc3=) 5...cb5 6.cb5 d5 7.e3 Ne7 8.Nc3+=.

4.c4 Na6 5.b5 cb5 6.cb5 Nc7 7.e3 d5 8.Nf3 Bd7 9.a4 Kf7 10.Be2 Qe8 11.0-0 Nb5 12.ab5 Bb5 13.Bb5 Qb5 14.Bc3 h5 15.Nd4 Qd7 16.Na3 g5 17.Nab5 e5 18.Ra7 Ra7 19.Na7 ed4 20.Bd4 b5 21.Qb1 h4 22.Nb5 g4 23.g3 hg3 24.fg3 Ke6 25.Nc3 Qh7 26.Qb6 Kf7 27.Nd5 Qh2 0–1. axtur777 – soficambio, lichess.org, 2019.

4.c4 Be7 5.Nc3 (5.e3 d5 6.Nc3 Nh6 7.Qh5 Nf7 8.d4=; 5.d4 a5 6.ba5 Qa5 7.Bc3 Qa4 8.Qa4=; 5.e4 d5 6.Bd3 dc4 7.Bc4 b5 8.Qg4+=; 5.Nf3 d5 6.e3 a5 7.b5 Nh6 8.Nc3+=) 5...d6 6.d4 e5 7.e3 a5 8.b5+=.

4.c4 Nh6 5.e4 (5.e3 d5 6.d4 Bd6 7.Qh5 Nf7 8.Nd2=; 5.d4 d5 6.e3 Bd6 7.Qh5 Nf7 8.Nc3=; 5.Nc3 d5 6.e3 Bd6 7.Qh5 Nf7 8.Nf3=; 5.Nf3 d5 6.e3 dc4 7.Bc4 b5 8.Bb3=) 5...d5 6.Qh5 Nf7 7.ed5 ed5 8.cd5+=.

4.e3 a5 5.b5 (5.Bd3 Nh6 6.b5 e5 7.f4 ef4 8.Qh5+=; 5.ba5 Ra5 6.d4 d5 7.Bd3 Nh6 8.c4=; 5.Qh5 g6 6.Qh4 d5 7.Nf3 ab4 8.ab4=; 5.c3 d5 6.b5 e5 7.d4 Nd7 8.c4=) 5...d5 6.c4 Bd6 7.d4 dc4 8.Bc4+=.

4.e3 Qb6 5.Nf3 (5.Nc3 a5 6.b5 Nh6+/–) 5...c5 (5...a5 6.b5+/–) 6.b5 (6.bc5 Bc5 (6...Qb2? 7.Nc3+-) 7.Nc3 Nh6+/– (7...Qb2? 8.Na4 Qa1 9.Qa1+-)) 6...a6 7.a4 (7.Nc3+/–) 7...g6 (7...ab5 8.ab5 Ra1 9.Ba1+/–) 8.c4 (better is 8.Nc3+-) 8...Ne7?? (8...ab5 9.ab5 Ra1 10.Ba1+/–) 9.d4 (better is 9.Bf6!? Rg8 10.Nc3 Bg7 11.Bg7 Rg7+-) 9...Qa5? (better is 9...Bg7 10.a5 Qc7 11.dc5 ab5+-) 10.Bc3+- Qc7 11.a5?? (better is 11.d5!? ed5 12.Bf6 Rg8+-) 11...ab5 (11...Bg7 12.dc5 Qc5 13.Qd2+/–) 12.cb5 (better is 12.d5!? ed5 13.cd5+-) 12...cd4 (12...Nd5 13.Bd2+/–) 13.b6 (13.Bd4 Nf5 14.Bf6 Bb4 15.Nbd2+/–) 13...Qc5? (13...Qd8 14.Nd4 Nbc6 15.Nc6 Nc6 16.Bb5+=) 14.Qd4?? (14.Bd4 Qd6 15.Bf6 Qd1 16.Kd1 Rg8+-) 14...Nec6?? Now all is on a5 (14...Qd4 15.Nd4 Nd5 16.Be2=) 15.Qc5 (better is 15.Qf6 Rg8 16.Ng5+-) 15...Bc5= 16.Bf6 0-0 17.Bc3 d5 (17...Nb4 18.Ra4 Nd5=) 18.Bd3 (better is 18.Nbd2+=) 18...d4?? (better is 18...Nb4 19.Ke2 Nd3 20.Kd3 Bd7+=) 19.ed4+- Bb4 20.Bb4 Nb4 21.Be4 N8c6 22.0-0 (22.Nc3 Ra5 23.Ra5 Na5+-) 22...Na5 (22...Ra5 23.Nc3 Ra1 24.Ra1+-) 23.Nfd2 (better is 23.Ne5 Rd8 24.Nd2 Rd4 25.Nef3+-) 23...Nbc6?? (better is 23...Bd7!?+/–) 24.Nb3! Rf4?? (24...Nb3 25.Ra3 Double attack (25.Ra8 Pinning; 25.Ra8 Deflection; 25.Ra3 Decoy)) 25.Bc6 bc6 26.Ra5 (worse is 26.Na5 Rf5 27.Nb3 Ra1 28.Na1 Rb5+-) 26...Ra5 (26...Rb8+-) 27.Na5 Rd4 28.Nc6 (28.b7 Bb7 29.Nb7 Ra4+-) 28...Rd7 29.Ne5 (better is 29.Nc3 Bb7 30.Na5 Kh8+-) 29...Rb7 (29...Rd4 30.Na3+-) 30.Nc4 (30.Rc1 Rb8+-) 30...Rd7 (30...Rb8 31.Nbd2+-) 31.Nbd2 e5 (31...Rd8 32.Ra1 Bb7 33.Ra7+-) 32.Ra1 Rd4 (32...Bb7+-) 33.Ra8 Rd8 34.b7 Rd2 35.Nd2 (35.bc8Q Kf7 36.Nd2 e4 37.Ne4 g5 38.Qc6 Kg7 39.Qf6) 35...Kg7 (35...g5 36.bc8Q Kg7 37.Ra7 Kf6 38.g4 h5 39.Qc6) 36.bc8Q h5 (36...Kh6 37.Qh3 Kg5 38.Ne4 Kf4 39.Qf3) 37.Qh8 (37.Qf8 Kh7 38.Ra7) 37...Kf7 38.Ra6 g5 (38...Ke7 39.Qg7 Kd8 40.Ra8) 39.Qh7 Kf8 40.Ra8 1–0. Trkn – russell dunn, itsyourturn.com, 2000.

4.e3 d5 5.d4 (5.Bd3 Ne7 6.Nf3 e5 7.Be2 Nf5 8.0-0=; 5.f4 Nd7 6.Nf3 Bd6 7.Nd4 e5 8.Ne6=; 5.Be2 Bd6 6.Nf3 Ne7 7.0-0 0-0 8.d4=; 5.Nf3 e5 6.Be2 a5 7.ba5 Qa5 8.0-0=) 5...a5 6.b5 Ne7 7.c4 cb5 8.cd5=.

4.e3 e5 5.d4 (5.Bd3 Nh6 6.f4 Qe7 7.fe5 fe5 8.Qh5=; 5.f4 ef4 6.ef4 Qe7 7.Kf2 a5 8.b5=) 5...e4 6.d5 d6 7.Nc3 Qe7 8.dc6+=.

4.e3 Nh6 5.d4 (5.Be2 d5 6.Nf3 Bd6 7.0-0 0-0 8.d4=; 5.Nf3 d5 6.Be2 Bd6 7.0-0 0-0 8.d4=; 5.e4 d5 6.e5 fe5 7.Be5 Nd7 8.Nf3=; 5.Qh5 g6 6.Qh4 Bg7 7.e4 d5 8.d4=) 5...d5 6.c4 Bd6 7.Qh5 Nf7 8.Nc3=.

4.e4 a5 5.b5 (5.ba5 d5 6.Qh5 g6 7.Qe2 de4 8.Qe4=) 5...d5 6.Qh5 g6 7.Qe2 de4 8.Qe4+=.

4.e4 a6 5.d4 (5.Nf3 b5 6.d4 a5 7.c3 ab4 8.ab4+=; 5.Qh5 g6 6.Qe2 b5 7.Nf3 a5 8.ba5+=; 5.Bd3 e5 6.Nc3 b5 7.Nf3 d5 8.0-0=; 5.Nc3 d5 6.ed5 cd5 7.Bd3 Ne7 8.Nf3=) 5...b5 6.Bc3 d5 7.Bd3 f5 8.e5+=.

4.e4 Na6 5.Nc3 Nh6 6.Bd3 Bd6 7.Qh5 Kf8 (7...Nf7!?+/–) 8.Nge2+- Nf7 9.f4 g6 10.Qh4 h6 (10...b5 11.0-0+-) 11.0-0 g5 12.Qh5 f5?? (12...Bc7+-) 13.ef5 e5 14.Ne4 Be7 (14...Bc7 15.fe5 Be5 16.Be5 Ne5+-) 15.fe5 Ne5 (15...Qe8 16.e6 Ne5 17.Qe8 Ke8 18.Be5 d5 19.Bh8 de4 20.Be4 Bd6+-) 16.Be5 Rh7 17.f6 Bf6 18.Rf6 Ke7 (18...Kg8 19.Rg6 Kf8 20.Rf1 Qf6 21.Bd6 Re7 22.Rff6 Ke8 23.Rg8) 19.Bd6 1–0. pierred – anony, internet, 2015.

4.e4 d6 5.Be2 (5.d4 f5 6.ef5 ef5 7.Qh5 g6 8.Qe2+=; 5.Nc3 d5 6.ed5 ed5 7.Qh5 g6 8.Qe2=; 5.Nf3 Ne7 6.Be2 d5 7.e5 Ng6 8.0-0+=; 5.Bd3 e5 6.Nf3 a5 7.b5 d5 8.0-0+=) 5...e5 6.d4 ed4 7.Bd4 a5 8.b5+=.

4.e4 e5 5.c4 (5.d4 ed4 6.Bd4 a5+= 7.b5 d5 8.ed5+=; 5.Nc3 d5 6.d4 a5 7.b5 ed4 8.Qd4+=; 5.Qf3 a5 6.b5 d5 7.d4 ed4 8.ed5+=) 5...Ne7 (5...a5 6.b5 (6.ba5 Bc5 7.Nf3= Ne7 8.Bc3=) 6...cb5 7.cb5 d5 8.ed5=) 6.Nf3 (6.d4 d6+= 7.Nf3 Qb6 8.Bc3+=) 6...Ng6 (6...d5 7.ed5 cd5 8.d4+=) 7.Be2 (7.d4 ed4 (7...d5 8.de5 de4 9.Qd8 Kd8 10.ef6 ef3 11.fg7 Bg7 12.Bg7 Re8 13.Kd2 fg2 14.Bg2 Be6+/–) 8.Bd4+=) 7...d6 (7...d5 8.ed5 cd5 9.0-0+=) 8.Qc2 (8.d4 Be7+=) 8...Be7 (8...Nf4 9.Bf1=) 9.Nc3 (9.d4 0-0+=) 9...Nf4= 10.0-0 Ne2 (10...Bg4 11.d4=) 11.Ne2+= Be6 12.d4 ed4 (12...0-0 13.Qd3+=) 13.Ned4+/– Bf7 14.Nf5 Bf8 (14...0-0!?+/–) 15.Rad1+- g6 (15...Qc7 16.Rd2+/–) 16.Ne3 (16.Nd6 Bd6 17.e5 fe5 18.Be5 0-0+-) 16...Be7? (better is 16...Qe7!?+/–) 17.e5! 0-0? (17...de5 18.Rd8; 17...fe5 18.Be5) 18.ef6 Bf6 19.Be5 (better is 19.Ng4 Be6 20.Nf6 (worse is 20.Bf6 Rf6 21.Nf6 Qf6+-) 20...Rf6 21.Qc3+- (worse is 21.Bf6 Qf6 22.Rd6 Na6+-)) 19...Be5+/– 20.Ne5 Be8 (20...Qe7 21.Nf7 Rf7 22.Qd2+-) 21.Qd3 Rf6 22.N3g4 (22.c5 d5+/–) 22...Re6 23.Rfe1 (23.Nh6 Kg7 24.Neg4 Nd7+/–) 23...Nd7 (better is 23...Qh4 24.Nh6 Qh6+=) 24.Nh6 Kg7 25.Neg4 Re1 26.Re1 Nf6 27.Qd4 Bf7 28.Re4 (28.Nf7?! Kf7 29.Rd1 Ng4 30.Qg4 a5+/–) 28...c5 29.Qc3 d5 30.cd5 (better is 30.Nf7!? Kf7 31.Rf4 d4+-) 30...Bd5?? (30...cb4 31.Qa1 b3 32.Nf7 Kf7+-) 31.Re8!! (31.Re8 Qd6 32.bc5+-) 1–0. tightfist (2095) – bigal (2135), net–chess.com, 2007.

4.e4 Ne7 5.Nc3 d5 6.Bd3 d4 (6...a5 7.Qh5 g6 8.Qh4 ab4 9.ab4 Ra1 10.Ba1 Bg7; 6...de4 7.Ne4 Ng6 8.Nh3 Be7 9.Bc4 Nd7 10.Be6 Nde5; 6...Ng6 7.ed5 Nf4 8.Nh3 Nd3 9.cd3 cd5 10.0-0 Bd6) 7.Nce2 e5 (7...c5 8.Nf3 Nbc6 9.bc5 e5 10.Rc1 Ng6) 8.f4 Nd7 (8...Bg4 9.h3 Bh5 10.Nf3 Bf3) 9.Nf3 b5 (9...Ng6 10.0-0 Bd6) 10.a4 a6 (10...ba4 11.Ra4 c5 12.fe5 fe5 13.c3+=; 10...Ng6+-) 11.0-0 (11.ab5 Qb6 12.ba6 Qb4+/–) 11...Bb7 12.fe5 fe5 13.Ng5 c5? (better is 13...Nf6+/–) 14.Nf7 Qc7 15.bc5 (better is 15.ab5 c4 16.Bc4 ab5 17.Ra8 (17.Nh8?! Qc4 18.Nf7 Ng6+-) 17...Ba8 18.Bb5+- (18.Nh8?! Qc4 19.d3 Qb4+-)) 15...Nc5?? (better is 15...Rg8 16.Nd6 Kd8 17.ab5 Nc5 18.ba6 Qd6 19.ab7 Rb8+-) 16.Nh8 Nd3 (16...Na4 17.Ba3 Nc5 18.Nd4+-) 17.cd3 Bc8 (17...Bc6+-) 18.Qb3 (18.Qb3 Nf5 19.ef5+-) 1–0. spencer – quattro, internet, 2011.

4.e4 Nh6 5.d4 d5 6.Nd2 Bd6 7.e5 Bc7 8.Bd3+=.

4.e4 Nh6 5.d4 d5 6.Bd3 Bd6 7.e5 Be7 8.Nf3 f5 9.Bc1 0-0 (9...Nf7!?+=) 10.Bh6+/– gh6 11.0-0 Kh8 12.Nbd2 Qb6 13.Nb3 Rg8 14.Qd2 Bd7 15.Qh6 Rg6 16.Qh3 Na6 17.Ba6 (17.Kh1 Rag8+-) 17...Qa6+/– 18.Ne1 Rag8 19.Nc5 Qc4? (better is 19...Bc5 20.bc5 b6+/–) 20.Nd7+- Qd4 21.Rb1 Rd8 22.Nc5 b6 23.Ncd3 a5 24.ba5 b5 25.Qf3 (25...Ba3 26.Nf4+-) 1–0. b4_player (2215) – walkwt, GameColony.com, 2003.

4.e4 Nh6 5.Qe2 d5 6.Nf3 de4 7.Qe4 a5 8.b5=.

4.e4 Nh6 5.Be2 d5 6.ed5 ed5 7.Nf3 Bd6 8.0-0=.

4.e4 Nh6 5.Nf3 d5 6.e5 Nf7 7.d4 fe5 8.de5=.

4.e4 Nh6 5.Qh5 Nf7 6.d4 d5 7.Nd2 b5 8.Bc3=.

4.Nf3 a5 5.ba5 (5.b5 cb5 6.e4 b4 7.Bb5 Nc6 8.0-0=) 5...Ra5 6.e4 d5 7.ed5 ed5 8.Bd3=.

4.Nf3 b5 5.e3 (5.e4 a5 6.a4 ab4 7.ab5 Ra1 8.Ba1=; 5.c3 a5 6.e4 ab4 7.ab4 Ra1 8.Ba1=; 5.Nc3 a5 6.ba5 Ra5 7.e4 d5 8.d4=; 5.Bc3 e5 6.e3 d5 7.a4 ba4 8.Ra4=) 5...d5 6.a4 Bb4 7.ab5 a6 8.Nd4=.

4.Nf3 d5 5.Nc3 (5.e3 e5 6.Be2 a5 7.ba5 Qa5 8.Bc3=; 5.d4 a5 6.ba5 Qa5 7.Bc3 Qa4 8.e3=) 5...e5 6.e4 d4 7.Na2 a5 8.c3=.

4.Nf3 e5 5.e4 (5.e3 d5 6.Be2 a5 7.b5 e4 8.Nd4=; 5.c4 d5 6.cd5 cd5 7.e3 a5 8.Qa4=; 5.Nc3 d5 6.e4 d4 7.Na2 a5 8.Ne5=; 5.d4 e4 6.Nfd2 d5 7.c4 Bd6 8.e3=) 5...d5 6.ed5 cd5 7.Bb5 Nc6 8.0-0=.

4.Nf3 Ne7 5.e4 g6? (better is 5...d5 6.e5 Ng6=) 6.Bf6+- Rg8 7.d4 Bg7 8.Bg7 Rg7 9.Bd3 d5 (9...d6 10.e5+-) 10.0-0 Nd7 11.Nbd2 (11.Qd2 de4 12.Be4 a5+-) 11...Qc7 (11...g5 12.ed5 ed5 13.Re1+-) 12.c4 b6 (12...g5 13.e5+-) 13.Ng5 Nf6 14.e5 Nfg8 15.Rc1 Nf5 16.Ngf3 Bd7 17.b5 0-0-0 (17...Nge7 18.cd5 Nd5 19.Ne4+-) 18.cd5 ed5 19.e6 (19.bc6 Bc6 20.Bb5 Nge7+-) 19...Be8 20.bc6 Bc6 (20...Re7 21.Qc2+-) 21.Ba6 Kb8 22.Re1 Qe7 (22...Qd6+-) 23.Rc6 Nf6 (23...Qa3 24.Qe2 Nge7 25.Rc2+-) 24.Qb3 Nd6 25.a4 Nfe4 (25...Ka8 26.a5 ba5 27.Qa3+-) 26.a5 (26.Ne4 de4 27.Ne5 Qe8+-) 26...Nd2 (26...Qe8 27.Rcc1+-) 27.Nd2 Nb7 (27...b5 28.Qd5 b4 29.Rb1+-) 28.ab6 Rc8 29.Rc8 Kc8 30.ba7 Kc7 (30...Qd6 31.a8Q Qb8 32.Bb7 Kd8 33.e7 Kc7 34.Qc3 Kd7 35.Qc6) 31.Qb7 Kd6 (31...Kd8 32.a8Q) 32.Qb6 1–0. market (1775) – abelola (1610), GameColony.com, 2002.

5.Qb3 a5 6.b5 a4 7.Qc2 cb5 8.cb5=.

5.Qc2 a5 6.b5 dc4 7.Qc4 Ne7 8.e4=.

5.c5 a5 6.d4 ab4 7.ab4 Ra1 8.Ba1=.

5.cd5 ed5 6.e3 Bd6 7.Bd3 Nh6 8.Qc2=.

5.e3 dc4 6.Bc4 b5 7.Bb3 a5 8.ba5=.

5.e3 dc4 6.Bc4 Nd7 7.Nf3+/–.

5.e3 dc4 6.Bc4 Be7 7.Qg4 (7.Nh3 Nh6 8.Nc3 e5+/–) 7...Bf8 (7...Kf8!? 8.Nf3 Nh6+/–) 8.Be6+- Be6 9.Qe6 Be7 (9...Qe7 10.Qc4+-) 10.Nf3 Nd7 11.d4 (11.Qg4 g6+-) 11...Qc7 (11...Nb6 12.Nc3+-) 12.Nc3 Qd6 13.Qd6 (13.Qg4 g6+-) 13...Bd6 14.b5 (14.0-0 Kf7+/–) 14...Ne7+/– 15.bc6 bc6 16.Ne4 Bc7 17.0-0 (17.Rb1 Kf7+/–) 17...Rb8 18.Bc3 Nd5 19.Bd2 (19.Rfc1+/–) 19...Rb2 (19...Kf7!?+/–) 20.Rfc1+- 0-0 (20...f5 21.Neg5+-) 21.Rc6 Bb8 (21...f5 22.Nc3 N7f6 23.Rc1+-) 22.Rac1 Ne7 (22...Re8 23.Nd6 Bd6 24.Rd6+-) 23.Re6 Nf5 (23...Nd5 24.g3+-) 24.Bb4 Rf7 (24...Rd8+-) 25.Re8 Nf8 (25...Rf8 26.Bf8 Nf8 27.g4+-) 26.Rb8 (26.Rb8 a5 27.Rf8 Rf8 28.Bf8 Kf8 29.g4+-) 1–0. Wall,Bill – Acura, internet, 2001.

5.Nc3 a5 6.b5 Nd7+=.

5.Nc3 d4 6.Na2 a5 7.Nf3 e5 8.c3=.

5.Bd3 a5 6.b5 cb5 7.Bb5 Bd7 8.Bd7+=.

5.ed5 ed5 6.Bd3 Qe7 7.Ne2 a5 8.0-0=.

5.Qe2 de4 6.Qe4 Ne7 7.Nf3 a5 8.b5=.

5.e5= a5 6.b5 cb5 7.Bb5 Bd7 8.Be2+=.

5.Qh5 g6+= 6.Qh4 Nd7 (6...Bg7 7.Nc3+=) 7.ed5 (7.Nf3 Bg7+=) 7...ed5 8.f4 (8.Nf3 Bg7 9.Bd3 Nh6=) 8...Qe7 (8...Nh6 9.Bd3=) 9.Kf2 Bg7 (9...Qd6 10.Bd3 Ne7 11.Nf3+=) 10.Nc3 g5 (10...Qd6 11.Nf3 Ne7+=) 11.Qg3 (11.Qh5 Qf7 12.Re1 Ne7 13.Be2+=) 11...Nh6? (better is 11...gf4!? 12.Qf4 Ne5=) 12.Re1+/– Ne5 13.fe5 fe5 14.Ne4?? (14.Nf3 0-0 15.Kg1 e4+/–) 14...Nf5?? Black intends d4 (better is 14...Ng4 15.Ke2 de4-+) 15.Qg5+= 0-0 (15...de4 16.Qe7 Ne7 17.Re4+=) 16.Qe7 (16.Nf3 Qg5 17.Neg5 h6+/–) 16...Ne7 17.Ke3?? (better is 17.Nf3 de4 18.Re4+/–) 17...d4?? (better is 17...de4 18.Bc4 Nd5 19.Bd5 cd5-+) 18.Ke2 (18.Kd3 Nd5 19.c4 dc3 20.Bc3 Bf5+-) 18...Bg4 (18...a5 19.Kd1 ab4 20.Bc4 Nd5 21.ab4 Bg4 22.Nf3 Rf3 23.gf3 Bf3 24.Kc1 Bh1 25.Rh1+-) 19.Kd3 (19.Nf3!? Rf4 20.Kf2 Raf8+-) 19...Nd5 20.g3 (20.c4 dc3 21.Bc3 Bf5+-) 20...b6 (20...a5 21.ba5 Ra5 22.Bh3+-) 21.Bg2 b5 22.Ne2?? (better is 22.Bh3 h5 23.Bg4 hg4 24.h4 gh3 25.Nh3+-) 22...a5 (22...Bf3 23.Nd4 Bg2 24.Ne6+=) 23.Rhf1 (23.ba5!? Bf3 24.Nd4 Bg2 25.Nc6=) 23...ab4= 24.Rf8 Rf8 (24...Bf8 25.a4 ba4 26.Nd4+=) 25.c4 (25.Ng5 Ra8 26.a4 ba4=) 25...bc4 (better is 25...dc3!? 26.Bc1 ba3 27.Ba3 Rd8+=) 26.Kc4+/– ba3? (better is 26...Nb6!? 27.Kb3 d3+=) 27.Ba3+- Ra8 (better is 27...Rb8 28.Bd6 Rb2+/–) 28.Ra1?? (better is 28.Bd6+-) 28...Be2-+ 29.Kc5 (29.Kb3 Bf8 30.Nf2 Ba3 31.Ra3 Rf8-+) 29...Ra5 30.Kc6 Ne7?? (better is 30...Nb4! 31.Bb4 Ra1-+) 31.Kb6= Ra6 (31...Rb5 32.Kc7 Nd5 33.Kc6=) 32.Kb7 Nc6 (32...Nf5=) 33.Bb2 (33.Nc5 Nd8 34.Kc8=) 33...Ra1 (33...Na5 34.Kc7 Rc6 35.Kb8 Rb6 36.Ka7 Ra6 37.Kb8-/+) 34.Ba1= Na5 35.Kc7 Nc4 36.Kc6 Na5 (36...h5 37.Ng5=) 37.Kd7 Bg4 (37...Nb3 38.Bb2=) 38.Kc7 (38.Kd6 Be2=) 38...Nb3 (38...Nc4 39.Bf1 Be6 40.Kc6=) 39.Bb2 d3 (39...Kf7 40.Ba3=) 40.Bc3 (40.Ng5 Bh6 (40...Nd2? 41.Bd5 Kh8 42.Nf7 Kg8 43.Nh6 Kh8 44.Ng4+-) 41.Bd5 Kf8 42.Nh7 Kg7+=) 40...Nd4+= 41.Bd4 ed4 42.Nf2 (42.Kd6 Kf7+=) 42...h5 43.Ng4 (43.Kd6 Bh6+=) 43...hg4= 44.Kd6 Bh6 45.Kd5 Bd2 46.Kd4 1–0. Trkn – Mario, itsyourturn.com, 2000.

4.b5 Na5 5.Bc3 Nc4 6.d3 Nd6 7.a4 a6 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 Nb5 11.c4 Bb4 12.Nbd2 Nc3 13.Qb3 Qe7 14.Bc3 Bc3 15.Qc3 f5 16.e3 Nf6 17.Be2 0-0 18.0-0 d5 19.Ne5 dc4 20.Ndc4 Nd7 21.Nd7 Bd7 22.Rb1 Bb5 23.h3 Rf6 24.Rb5 Qf7 25.Rb7 Qg6 26.Rb8 Rf8 27.Rf8 Kf8 28.Ne5 Qe8 29.Qc5 Qe7 30.Qe7 Ke7 31.Bf3 Kd6 32.d4 c5 33.Nc4 Kc7 34.dc5 g5 35.c6 h6 36.Ne5 f4 37.ef4 gf4 38.Nf7 h5 39.Bh5 Kc6 40.Bf3 Kc5 41.Ne5 Kd4 42.Ng6 e5 43.Kf1 e4 44.Be2 e3 45.Nf4 ef2 46.Kf2 Ke5 47.Nd3 Ke4 48.h4 Kf5 49.h5 Kg5 50.g4 Kh6 51.Kf3 Kg5 52.Ne5 Kh6 53.Ng6 Kg5 54.Bd3 Kh6 55.Kf4 Kg7 56.Kg5 Kh7 57.h6 Kg8 58.Kf6 Kh7 59.g5 Kg8 60.Bc4 Kh7 61.Nf8 Kh8 62.Ng6 Kh7 63.Kf7 ½–½. Phomopsis (1685) – Stefanvuk (1660), lichess.org, 2019.

4.b5 Nb8 5.e3 c6 6.c4 cb5 7.cb5 Qb6 (7...d5 8.Nc3+=) 8.d4 d6 9.Nc3 Bd7 10.Nf3 a6 11.a4 Ne7 12.a5 Qc7 (12...Qd8 13.d5+/–) 13.b6+/– Qc6 (13...Qc8 14.Bd3+/–) 14.e4 (14.Rc1!?+-) 14...d5+/– 15.e5 f5? (15...Ng6 16.h4+=) 16.Bd3 (16.Rc1 g6+-) 16...g6 (16...Ng6 17.0-0+/–) 17.Ng5 (better is 17.Rc1!?+-) 17...Bh6 18.Nh3 0-0 19.0-0 Be8 20.f4 Nd7 (20...Qc8 21.Qe1 Bg7 22.Qh4+-) 21.g4 Qc8 22.gf5 gf5 23.Ng5 Bg5 24.fg5 Ng6 25.Ne2 Rf7 26.Rc1 Qd8 27.Ba3 Rc8 28.Qb3 Nb8 29.Ng3 Nc6=+ 30.Ba6?? ba6-+ 31.b7 Rcc7 32.Rc6-/+ Bc6?? 33.b8Q+- Qb8 34.Qb8 Nf8 35.Bf8 Rb7 36.Qd6 Rf8 37.Qc6 Rg7 38.Qe6 Kh8 39.Rf5 Rfg8 (40.Qf6 Rb8 41.Nh5 Rbb7 42.Ng7 Rb1 43.Rf1 Rf1 44.Kf1 Kg8 45.Ne6 h5 46.Qg7; 39...Rd8 40.Qf6 Rb8 41.Nh5 Rbb7 42.Ng7 Rb1 43.Kg2 Rb2 44.Rf2 Rf2 45.Kf2 Kg8 46.Ne6 h5 47.Qg7). kamera – on_free, GameColony.com, 2002.

4.b5 Nb8 5.e4 a6 6.c4 ab5 7.cb5 c6 (7...d5 8.Qh5 g6 9.Qe2=) 8.Nc3+= cb5 (8...Qb6 9.Nf3+=) 9.Qh5 (9.Nb5 Nh6+=) 9...g6 10.Qb5 Ra5 11.Qb3 Re5 (11...d5 12.Nf3+=) 12.Nf3 Ra5 13.Bb5 Ne7 14.0-0 Nbc6 15.d4 (better is 15.Rfe1+/–) 15...Qb6? (15...d5!?+/–) 16.a4 (better is 16.d5+-) 16...Nd4?? (better is 16...Kf7+-) 17.Nd4 (better is 17.Bd7 Bd7 18.Qb6 Nf3 19.gf3 Ra6 20.Qb7 Bc8+-) 17...Qd4 (17...Kf7 18.Ne6 Qe6+-) 18.Rad1 (18.Nd5 Qa7 19.Nf6 Kd8 20.Rfd1+-) 18...Qa7 19.Bd7?? Bd7= 20.Rd7 Kd7 21.Rd1 Ke8-/+ 22.Nb5 Qb8?? 23.Nd6+- Kd8 24.Nb7 Kc7 25.Na5 Qb3 26.Nb3 Bh6? 27.Bf6 Nc6 28.Nc5 Rb8 29.Ne6 Kb6 30.Rb1 Ka7 31.Rb8 Nb8 32.Ng5 Bf8 33.e5 Bb4 34.e6 Nc6 35.f4 Ne7 36.g4 Nd5 (37.Nh7 Bc5 38.Kh1 Nf4+-). kamera – NN, GameColony.com, 2002.

4.Nc3 A) 4...Nge7 5.e4 (5.d4 d6 6.Nf3 d5 7.e4 Ng6 8.Bd3+=; 5.e3 d5 6.b5 Ne5 7.d4 Nf7 8.Nf3=; 5.b5 Ne5 6.e4 d5 7.d4 Nf7 8.Bd3+=; 5.Nf3 d5 6.d4 a6 7.e4 Ng6 8.Bd3+=) 5...d5 6.d4 de4 7.Ne4 a6 8.Nf3+=; B) 4...Nh6 5.d4 (5.e3 d5 6.Nf3 Bd6 7.e4 d4 8.Nb5=; 5.e4 Bd6 6.Qh5 Nf7 7.Nf3 g6 8.Qh3+=; 5.Nf3 d5 6.d4 Be7 7.e4 0-0 8.Bd3+=) 5...d5 6.e4 f5 7.e5 Bd7 8.Nf3+=; C) 4...e5 5.e4 d6 6.Nf3 f5 7.Bb5 Nge7 8.0-0+=; D) 4...d5 5.d4 (5.e3 e5 6.Bb5 a6 7.Ba4 Nge7 8.Qh5=; 5.Nf3 d4 6.Ne4 Qd5 7.Ng3 a5 8.c3=; 5.e4 d4 6.Nb1 e5 7.Bc4 Nh6 8.Nf3=; 5.b5 Na5 6.e3 Nh6 7.Rb1 Nf7 8.Nf3=) 5...e5 6.e4 Nd4 7.Nd5 c6 8.Ne3=.

4.c4 a6 5.Nf3 Be7 6.d4 Nh6 7.e3 0-0 8.Bd3 b6 9.Qc2 g6 (9...f5 10.d5 Nb8 11.0-0+=) 10.Nbd2 d6 11.d5 ed5 12.cd5 Ne5 13.Ne5 de5 14.0-0 Kg7 15.Bc4 Bb7 16.e4 b5 17.Bd3 c6 18.dc6 Rc8 19.Rac1 Rc6 20.Qb1 Rd6 21.Nb3?? (better is 21.Rc3+=) 21...Rd3-+ 22.Nc5 Bc5 23.Rc5 Rd7 (23...Be4 24.Qa1-+) 24.Rfc1 (24.f3 Nf7-+) 24...Qa8 (better is 24...Be4 25.Qa1 Nf7 26.a4-+) 25.f3 Nf7 26.Qa2 Qa7 27.Qe6 Ba8 28.f4 Re7 29.Qg4 Be4 (better is 29...Nd6 30.fe5 fe5-+ (30...Ne4?! 31.ef6 Nf6 32.Rf1-+)) 30.fe5 Bf5 31.ef6 Kg8 32.Qd4 Rd7 33.Qf2 Re8 34.h3 Ng5 35.Rf5? (better is 35.Re5 Qf2 36.Kf2-+) 35...Qf2?? (better is 35...gf5 36.Qa7 Ra7-+) 36.Rf2+/– (36.Kf2?? gf5 37.Rc2 Ne4 38.Kf3 Rd1-+) 36...Kf7 37.Rfc2 Ne4 38.Rc7 (38.Rc6 Re6+-) 38...Red8 (38...Nf6!? 39.R7c6 Nd5 40.Ra6 Ne3+/–) 39.Rd7 Rd7 40.Rc6 Rd6 41.Rc7 Ke6?? (41...Kf8 42.Rh7 Nf6 43.Ra7+/–) 42.f7 (better is 42.Re7 Kd5 43.f7+-) 42...Rd8?? (better is 42...Rd1 43.Kh2 Rf1+/–) 43.Bg7+- Ng5 44.f8Q Rf8 45.Bf8 Nf7 (45...h5 46.Rc6 Kf7 47.Bc5+-) 46.Rc6 Kd7 47.Ra6 1–0. Fournier,Frederic (1785) – aixorai, Active, 2011.

4.d4 A) 4...Nh6 5.e4 (5.Nd2 d5 6.e4 Nf7 7.Ngf3 Bd6 8.Bd3+=; 5.b5 Ne7 6.Nf3 d5 7.Bc1 Nf7 8.e3=; 5.Nc3 d5 6.e4 de4 7.Ne4 a6 8.Nf3+=; 5.Nf3 d5 6.e3 Nf5 7.Bd3 Bd6 8.Nc3+=) 5...d5 6.Bd3 Bd6 7.Nf3 0-0 8.0-0+=; B) 4...d5 5.b5 (5.Nd2 e5 6.de5 Ne5 7.e4 Qe7 8.Ngf3=; 5.Nf3 Bd7 6.e3 a5 7.b5 Na7 8.c4=; 5.e3 Bd6 6.Bd3 Nh6 7.Nf3 e5 8.c4=; 5.Nc3 e5 6.e4 Nd4 7.Nd5 c6 8.Ne3=) 5...Nce7 6.Nd2 Ng6 7.e4 Nh6 8.Ngf3+=.

4.e3 d5 5.d4 (5.Nf3 e5 6.Be2 Bd6 7.0-0 Be6 8.d4=; 5.Bd3 Nh6 6.f4 Bd6 7.Qh5 Nf7 8.Nc3=; 5.Nc3 e5 6.d4 Be6 7.Bb5 a5 8.ba5=; 5.Bb5 a5 6.ba5 Bd7 7.a6 ba6 8.Bd3=) 5...Bd6 6.Nf3 Nge7 7.c4 dc4 8.Bc4+=.

4.e3 d6 5.d4 (5.Bd3 Nh6 6.Nf3 e5 7.0-0 d5 8.e4+=; 5.Nf3 e5 6.d4 e4 7.Nfd2 f5 8.d5+=; 5.Nc3 e5 6.Bb5 Nge7 7.Nf3 a6 8.Bc6=; 5.b5 Nce7 6.Nf3 d5 7.d4 a6 8.Nbd2+=) 5...e5 6.Bb5 Bf5 7.d5 a6 8.Ba4+=.

4.e3 e5 5.Nc3 d5 6.d4 Be6 7.Bb5 a5 8.ba5=.

4.e3 e5 5.Bd3 Nh6 6.f4 d5 7.b5 e4 8.bc6+=.

4.e3 e5 5.d4 ed4 6.ed4 d5 7.Bd3 Nh6 8.Nf3+=.

4.e3 e5 5.e4 d6 6.Nf3 f5 7.ef5 Bf5 8.Bb5=.

4.e3 e5 5.Nf3 d5 6.Be2 Bd6 7.0-0 Nge7 8.d4=.

4.e3 e5 5.Nf3 d6 6.d3 Bg4 7.Be2 Nge7 8.Nbd2 Ng6 9.h3 Bh5?? (9...Be6 10.0-0=) 10.0-0?? (10.g4!? Bg4 11.hg4 Qd7+-) 10...Be7? (10...f5 11.Ne5 Be2 12.Nc6 Bd1 13.Nd8 Bc2 14.Ne6+=) 11.c4 (11.g4 Bg4 12.hg4 Qd7+-) 11...0-0? (11...f5 12.Ne5 Be2 13.Nc6 Bd1 14.Nd8+/–) 12.Nh2?? (better is 12.g4 Bg4 13.hg4+-) 12...Be2= 13.Qe2 f5 14.Nhf3 f4 15.Ne4 Nh4 (15...Qd7!?=) 16.Nh4+= Bh4 17.ef4 Rf4? (17...ef4 18.Qh5+/–) 18.f3?? (better is 18.g3 Rf7 19.gh4 Qh4 20.Qg4 Qg4 21.hg4+-) 18...Rf8 19.Rad1 Ne7 20.d4 ed4 21.Bd4 Nf5 22.Bf2 Qd7 23.Bh4 Nh4 24.Qf2 Nf5 25.Qd2 Rae8 26.Rfe1 Qf7 27.Qd5 Kh8 28.Qf7 Rf7 29.Kf2 c6? (better is 29...Rfe7+=) 30.Nd6+- Re1?? (30...Nd6 31.Rd6 Ref8 32.c5+-) 31.Ke1 (better is 31.Nf7 Kg8 32.Ke1 (worse is 32.Re1 Kf7 33.c5 Ne7+-) 32...Kf7 33.Rd7 Kf6 34.Rb7+-) 31...Re7 32.Kf2 h6?? (better is 32...Nd6 33.Rd6 Kg8+-) 33.Nf5 (33.Nf5 Rc7 34.Rd8 Kh7 35.Nd6+-) 1–0. Fournier,Frederic – santijack, Active, 2005.

4.e3 Nge7 5.Nf3 Nd5 6.c4 Nde7 7.d4 Ng6 8.Bd3 Qe7 9.Nbd2 a5 10.b5 Na7 11.0-0 e5 (11...b6!?+/–) 12.de5+- fe5 13.Be4 (better is 13.Bg6 hg6 14.Ne5+-) 13...c6? (13...d6 14.Nb3 Rb8 15.Na5+-) 14.a4 (14.b6 d6+-) 14...d6 (14...b6+-) 15.b6 Bg4 16.ba7 Ra7 17.h3 Bf3 18.Nf3 (18.gf3?! Ra8+-) 18...Nh4 19.Nh4 Qh4 20.Qf3 (20.f4 Ra6+-) 20...Be7 21.Rfd1 (21.Qf5!? Ra8+-) 21...Rf8 22.Qg3?? (better is 22.Qg4 Qg4 23.hg4+-) 22...Qe4+= 23.Rac1 (23.c5 dc5 24.Be5+=) 23...Bh4 (better is 23...b5 24.f4 bc4-+) 24.Qg7= Bf2 (24...Rf2 25.Rd6 Qe3+= (25...Rb2 26.Re6 Kd8 27.Rd1 Qd4 28.ed4 Bf2 29.Kf1 Be3 30.Rd6 Ke8 31.Qe5 Kf8 32.Qf6 Kg8 33.Rd8)) 25.Kh1+= Qe3?? (better is 25...Qg6 26.Qg6 hg6 27.Rd6 Be3+/–) 26.Rd6 Rf7 (26...Qh3 27.gh3 b5 28.Re6 Kd8 29.Qf8 Kc7 30.Re7 Kb6 31.Qf2 c5 32.Qf6) 27.Qg8 Rf8 28.Qe6 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e3 f5 5.Qh5 g6 6.Qd1 g5?? (better is 6...Nf6+=) 7.Bh8 (better is 7.Qh5 Ke7 8.Qg5 Kd6 9.Qd8 Nd8 10.Bh8+-) 7...h5 (7...Nf6+-) 8.Qh5 Ke7 9.Qg5 Ke8 10.Qg8 Qf6 11.Bf6 (11.Bf6 Ne7 12.Be2+-) 1–0. GuestSMVF – GuestCWQS, freechess.org, 2017.

4.e3 Nh6 5.Nf3 (5.Be2 d5 6.Nf3 e5 7.0-0 e4 8.Ne1=; 5.d4 d5 6.Nf3 Nf5 7.Bd3 Bd6 8.Nc3+=; 5.Nc3 d5 6.Nf3 Bd6 7.e4 d4 8.Nb5=) 5...d5 6.d4 Bd6 7.c4 dc4 8.Bc4+=.

4.e4 d5 5.ed5 (5.Bd3 e5 6.Nf3 Be6 7.0-0 Nge7 8.Nc3=; 5.Qh5 g6 6.Qh4 de4 7.Bb5 Bd7 8.Qe4=; 5.Bb5 a5 6.ba5 Ra5 7.Qh5 g6 8.Qe2=; 5.Qf3 Nge7 6.ed5 Nd5 7.Bd3 Qd7 8.Be4=) 5...ed5 6.Bb5 a5 7.ba5 Ra5 8.Qh5=.

4.Nf3 a6 5.e3 (5.d4 d5 6.Nbd2 g5 7.e4 g4 8.Ng1+=; 5.e4 d6 6.d4 Nge7 7.Bd3 Ng6 8.0-0+=) 5...d5 6.d4 Nh6 7.c4 Be7 8.Nc3+=.

4.Nf3 d5 5.d4 (5.e3 e5 6.Be2 Bd6 7.0-0 Be6 8.b5=; 5.Nc3 d4 6.Ne4 Qd5 7.Ng3 a5 8.c3=; 5.b5 Na5 6.e3 e5 7.d4 e4 8.Nfd2=; 5.Ra2 e5 6.e3 Be6 7.d4 e4 8.Nfd2=) 5...Bd7 6.e3 Nh6 7.c4 dc4 8.Bc4+=.

4.Nf3 e5 5.e4 (5.e3 d5 6.Be2 Bd6 7.0-0 Nge7 8.d4=) 5...d5 6.ed5 Qd5 7.Nc3 Qe6 8.Bd3=.

4.Nf3 Be7 5.c4 (5.d4 d5 6.e3 Nh6 7.Bd3 0-0 8.0-0+=; 5.b5 Na5 6.e4 d5 7.e5 Bd7 8.Nc3=; 5.e3 d5 6.d4 Nh6 7.Bd3 Bd7 8.0-0+=; 5.e4 Nh6 6.d4 0-0 7.d5 ed5 8.Qd5+=) 5...Nh6 6.d4 0-0 7.e3 d6 8.Bd3+=.

4.Nf3 Nge7 5.b5 Nb8 6.e4 d5 7.e5 Ng6 8.c4=.

4.Nf3 Nge7 5.c4 d6 6.b5 Na5 7.e3 b6 8.Nc3 Bb7 9.Bd3 c6 10.0-0 cb5 11.cb5 Bf3 12.Qf3 (12.gf3?! d5=) 12...d5 13.Rfe1 Nb3 14.Rad1 Nc5 15.Bc2 Nf5? (better is 15...f5+/–) 16.Bf5 Qe7?? (16...ef5 17.d3 Qd7 18.Nd5 Rc8+-) 17.Bc2 (17.d4 g6 18.dc5 gf5 19.Nd5 ed5 20.Qd5 Rd8 21.Qd8 Qd8 22.Rd8 Kd8 23.Bf6 Kc8 24.Bh8 Bc5+-) 17...0-0-0 (17...Nb7 18.d4 f5 19.Rc1+-) 18.d4 Nb7 19.e4 h5 (19...de4 20.Qe4 Kb8 21.Qe6 Qe6 22.Re6+-) 20.ed5 Rd6 (20...e5 21.Qf5 Kb8 22.de5 fe5 23.Ne4+-) 21.Re2 (21.de6 Qd8+-) 21...Nd8 (21...Kb8 22.a4+-) 22.Bb3 (better is 22.de6 Kb8 23.d5 Nb7+-) 22...Kd7 (22...Qb7 23.Qh3 Nf7 24.Ne4+-) 23.Rde1 (23.de6 Ke8+-) 23...Rh6 (23...Ke8 24.de6 g6 25.Ne4+-) 24.de6 Kc7 25.Nd5 (25.Qa8!? Nb7 26.Rc2 Nc5+-) 25...Rd5 26.Qd5 Qd6 27.Qd6 (27.Rc2 Kb8 28.Rec1 Nc6 29.Rc6 Qd8 30.Qd8 Kb7 31.Qc8) 27...Bd6 (27...Kd6 28.e7 Be7 29.Re7 h4 30.Ra7 Rg6 31.Re8 Rg2 32.Kg2 Nb7 33.Rb7 h3 34.Kh3 g5 35.Re6) 28.e7 (28.e7 Rh8 29.e8Q Re8 30.Re8+-) 1–0. Gonzalez,Roberto Enrique – Huseby,Juan Carlos, 65. LSS No Engine Cup Preliminary, 2012.

4.Nf3 Nge7 5.d4 d5 6.Nbd2 Qd7 7.e4 Ng6 8.c4+=.

4.Nf3 Nge7 5.e3 e5 6.Be2 d5 7.d4 e4 8.Nfd2+=.

4.Nf3 Nge7 5.e4 d5 6.e5 Ng6 7.ef6 gf6 8.b5=.

4.Nc3 A) 4...d4 5.Ne4 (5.Na2 a5 6.e4 de3 7.fe3 e5 8.Bc4=; 5.Na4 e5 6.e3 Qd7 7.c4 Nc6 8.Nf3=; 5.Nb1 a5 6.b5 e5 7.Nf3 Be6 8.c3=) 5...a5 6.Nf3 e5 7.c3 ab4 8.ab4=; B) 4...e5 5.Nf3 (5.e3 a5 6.b5 Be6 7.d4 Bd6 8.Nge2=; 5.e4 d4 6.Na4 Qd7 7.c3 d3 8.c4=; 5.d4 e4 6.e3 c6 7.f3 f5 8.fe4=) 5...d4 6.Ne4 a5 7.c3 ab4 8.ab4=; C) 4...c5 5.b5 (5.bc5 Bc5 6.e3 Nc6 7.Bd3 Nh6 8.Qh5=; 5.e4 cb4 6.ab4 Bb4 7.ed5 Bc3 8.Bc3=) 5...d4 6.Ne4 Qd5 7.Ng3 c4 8.Nf3=; D) 4...Ne7 5.d4 (5.e4 d4 6.Nce2 e5 7.c3 dc3 8.dc3=; 5.e3 e5 6.Nf3 a5 7.b5 Ng6 8.Be2=; 5.Nf3 e5 6.e4 d4 7.Na4 Ng6 8.c3+=; 5.Rb1 e5 6.e3 a5 7.b5 Be6 8.Nf3=) 5...e5 6.e4 ed4 7.Qd4 Nbc6 8.Bb5+=; E) 4...a5 5.b5 (5.ba5 Ra5 6.e3 e5 7.Nf3 Bd7 8.d4=) 5...e5 6.e3 Be6 7.Be2 Bd6 8.d4=.

4.c4 a5 5.b5 (5.Qa4 Nd7 6.e3 c6 7.c5 b5 8.cb6+=; 5.cd5 ed5 6.b5 Bg4 7.Qc2 Bd6 8.Nc3=; 5.ba5 d4 6.e3 de3 7.fe3 Nh6 8.d4=; 5.c5 ab4 6.ab4 Ra1 7.Ba1 Nc6 8.Qb3=) 5...Nd7 6.cd5 ed5 7.e3 Ne7 8.Nf3=.

4.c4 c5 5.bc5 (5.cd5 cb4 6.e4 ba3 7.Na3 ed5 8.Qh5=; 5.b5 a6 6.e3 ab5 7.cd5 ed5 8.Bb5=; 5.Qb3 Nc6 6.bc5 Na5 7.Qb4 Nc4 8.e3=) 5...dc4 6.e4 e5 7.Bc4 Bc5 8.Qb3=.

4.c4 c6 5.e3 (5.c5 b6 6.d4 a5 7.Nc3 ab4 8.ab4=; 5.Qc2 a5 6.b5 cb5 7.cb5 Bd6 8.Nf3=; 5.Qb3 dc4 6.Qc4 b5 7.Qc3 a5 8.e4+=; 5.cd5 ed5 6.e3 Bd6 7.Bd3 Nh6 8.Qc2=) 5...dc4 6.Bc4 b5 7.Bb3 a5 8.ba5=.

4.c4 d4 5.Qb3 Nc6 6.e3 e5 7.c5 Bf5 8.Bc4=.

4.c4 d4 5.c5 e5 6.Qc2 a5 7.e3 ab4 8.ab4=.

4.c4 d4 5.e3 de3 6.fe3 Nh6 7.d4 a5 8.b5=.

4.c4 d4 5.e4 e5 6.c5 b6 7.cb6 ab6 8.Bc4=.

4.c4 d4 5.Nf3 e5 6.c5 Nc6 7.Qc2 Bg4 8.b5=.

4.c4 Nd7 5.cd5 (5.e3 dc4 6.Bc4 Nb6 7.Bb5 c6 8.Be2=; 5.Nf3 dc4 6.e4 Nb6 7.Qc2 e5 8.Bc4=; 5.d3 dc4 6.dc4 a5 7.b5 Bd6 8.e4=; 5.c5 a5 6.Qa4 Nh6 7.e3 Be7 8.d4=) 5...ed5 6.e3 Ne7 7.Nf3 a5 8.b5=.

4.d4 a6 5.Nc3 Bd7 (5...a5 6.ba5 c5 7.dc5 Qa5 8.e3=) 6.e3 (6.e4 a5 7.b5 c6+=) 6...b5 (6...a5 7.b5+=) 7.f4 (7.Bd3 f5+=) 7...f5 8.g3 (8.Nf3 Nf6=) 8...h6 (8...a5 9.Nb5 c6 10.Nc3 ab4 11.ab4 Ra1 12.Qa1 Bb4 13.Nf3=) 9.g4 (9.Qh5!? Ke7 10.Qh4 Nf6 11.Be2+=) 9...Qh4=+ 10.Kd2 Qg4 11.Nce2 (better 11.Nf3!?=+) 11...Nf6-/+ 12.Ng3 Qd1 13.Rd1 h5 14.Kc1? (better 14.h4!?-/+) 14...h4 15.N3e2 Ng4 16.Nh3 Ne3 17.Rd3 (17.Re1 a5 18.Nc3 Nf1 (18...ab4?! 19.Nb5 Bb5 20.Bb5 c6 21.ab4-/+) 19.Rhf1 Be7-+ (worse 19...ab4 20.Nd5 Na6 21.ab4-+)) 17...Nf1 (17...Nc4 18.c3-+) 18.Rf1 Be7 (18...a5 19.ba5 Nc6 20.a6-+) 19.Rg1 Rg8 20.Ng5 Bg5 (20...a5 21.ba5 Ra5 22.Rh3-+) 21.Rg5-/+ g6 (21...a5!?-/+) 22.Rh3=+ Nc6 23.Rh4 Ne7 (23...Kf7 24.Rh7 Rg7 25.Rh3=+) 24.Rh3 (24.Rh7 Bc6=) 24...0-0-0 25.Rc3 Kb7 (25...Rh8 26.h3=+) 26.h4 (26.Ng1 Rh8 27.Nf3 Rh5=) 26...Rh8 Black gets the initiative 27.Rh3 White plans h5 27...Rh7 28.Ng3? White prepares h5 (better 28.Ng1!?=+) 28...Rdh8-/+ 29.h5 Be8 30.Kd1 (30.h6 Rh6 31.Rh6 Rh6-+) 30...gh5 31.Ke2 (31.Rh4 Ng6 32.Rhh5 Nf4 33.Rh7 Rh7-+) 31...h4 32.Nf1 Bg6 (32...Bh5 33.Ke3 Bd1 34.c3-+) 33.Ne3 (33.Ke3 Kc6-+) 33...Bh5 34.Kd3 Bf7 (34...Kc6 35.Kd2 Bf7 36.Ke2-+) 35.Rg1 Ng6 (35...Kc6 36.Re1-+) 36.Ng2 Rg8 (better 36...Nf8!?-+) 37.Rgh1-/+ Rgh8 (37...Rhg7 38.Bc1-/+) 38.Bc3 (38.Rg1 Rg7 39.Rgh1-/+) 38...Kc6 39.Be1 Kb6 40.Nh4?? (better 40.Ke3-/+) 40...Nf4-+ 41.Ke3 Nh3 42.Rh3 Kc6 43.Kf4 (43.Rh2 Rg8-+) 43...Kd6 (43...Rg7 44.Bf2-+) 44.Bg3 Ke7 (44...Kd7 45.Rh2-+) 45.Ke5 (45.Rh2 Ke8-+) 45...Rg7 46.Bf2 Rg2 47.Be1 (47.Ng2 Rh3 48.Ne3-+) 47…Re2 (47...Re2 48.Kf4 Kf6-+) 0–1. Delboy Smith (1710) – Broad Sword (1705), ChessWorld.net, 2009.

4.d4 Nh6 5.e3 f5 6.Bb5 c6= 7.Bd3 Qg5 (7...Qg5 8.Qf3 Bd6+=; 7...a5 8.ba5 Qa5 9.Nd2=). sansai – epersici, net–chess.com, 2006.

4.e3 a5 5.ba5 Ra5 6.Bd3 g6 7.Bc3 Ra8 8.f4=.

4.e3 a5 5.b5 Nh6 6.c4 Be7 7.Nc3 0-0 8.d4=.