2...g5 (--> 1.b4 g5 2.Bb2 Nf6).

2...Nh5 3.e3 e6 4.Qh5 g6 5.Qf3 Qh4 (5...Rg8+-) 6.Bh8 1–0. DEFFM – GuestMMVB, freechess.org, 2018.

2…h6 (--> 1.b4 h6 2.Bb2 Nf6).

(--> 1.b4 b5 2.Bb2 Nf6).

3.e3 a6 4.Be2 Bb7 5.Nf3 e6 6.a3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.Be2).

3.e3 Bb7 4.a3 e6 5.Nf3 d6? (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 d6?).

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

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

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

3.e3 Bb7 4.Nf3 a6 5.Be2 e6 6.a3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.Be2).

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

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

3.a3 c5 4.bc5+= e6 5.d4 b6 6.e3 (6.cb6 Qb6 7.Bc1 d5+=) 6...bc5= 7.dc5 Bc5 8.Nc3 Bb7 9.Nf3 0-0 10.Bd3 d5 11.Qe2 Be7 (11...Nc6 12.Nb5=) 12.0-0 Nbd7 13.Nd4 Qb8 14.Rab1 Qc8 15.Ncb5 Ba6 (15...Rb8 16.Rfc1=) 16.a4 (16.c4 Nc5 17.cd5 Nd3 18.Qd3 Nd5+=) 16...Nc5 17.Ba3 Re8 (worse 17...Nd3 18.Be7 (18.Qd3?! Ba3 19.Qa3 Ne4=; 18.cd3?! Ba3 19.Na3 e5=) 18...Nc5 19.Bf8 Qf8 20.Ra1+/-) 18.Bc5 Bc5 19.c4 Bd4 (19...dc4 20.Bc4 Bd4 21.ed4=) 20.ed4 (20.Nd6!? Qc5 21.Ne8 Re8 22.ed4 Qd4 23.Rfd1+=) 20...dc4= 21.Bc4 Qd7 22.Rfd1 Nd5 23.Bd5 Qd5 24.Nc7?? (better 24.Qe5 Rec8 25.Qd5 ed5 26.Rdc1 Rc1 27.Rc1 Bb5 28.ab5=) 24...Be2-+ 25.Nd5 ed5 (25...Bd1!? 26.Nc7 Ba4 27.Ra1-+) 26.Re1 (26.Rdc1 Bc4-+) 26...Bc4 (26...Bd3!? 27.Ra1-+) 27.Re8 Re8 28.h3 (28.f3 g5-+) 28...g5 29.Kh2 Re4 30.Kg3 (30.Rb8 Kg7-+) 30...Rd4 31.Re1 (31.Rb8 Kg7 32.Ra8 h5-+) 31...Rd3 (31...Bb3 32.Rb1 Rb4 33.Ra1-+) 32.f3 (32.Kg4 Ra3 33.Kg5 Kg7-+) 32...Ra3 33.Re7 d4 (33...Kg7 34.Re1-+) 34.Kg4 (34.Re4-+) 34...d3 35.Kg5 (35.Re8 Kg7 36.Rd8 Ra2-+) 35...Kg7 (better 35...d2 36.Kf6 h6 37.Re8 Kh7 38.Rd8-+) 36.h4 (36.Rd7 Ra2 37.g4-+) 36...d2 37.h5 h6 38.Kf5 Rd3 (38...d1Q 39.Kf4 Qd2 40.Re3 Qe3 41.Kg3 Qg5 42.Kh3 Bf1 43.Kh2 Qg2) 39.g4 d1Q 40.g5 (40.Rf7 Kf7 41.f4 Be6 42.Ke5 Qe2) 40...Qf3 41.Ke5 Rd5 0-1. Gehaktbalmetjus (1960) - goodwin5435 (2125), Rated Bullet game, lichess.org, 2019.

3.ba5 Ra5 (--> 1.b4 a5 2.ba5 Ra5 3.Bb2 Nf6).

3.e3 g6 4.ba5 Bg7 5.c4 Nh5 (better 5...0-0=) 6.a6?? (better 6.d4=) 6...Bb2-+ 7.Nc3 Ba1 8.Qa1 (8.ab7 Bb7 9.Qa1 Na6-+) 8...0-0 (8...Na6!? 9.Nf3-+) 9.ab7 Bb7 10.Nf3 (10.Qb2 Ra7-+) 10...Qc8 (10...Bf3 11.gf3 e5 12.Rg1-+) 11.d4 (11.Be2 Re8-+) 11...Ng7 (11...Bf3 12.gf3 Nf6 13.Bg2-+) 12.Bd3 (12.Be2 c5-+) 12...c5 (12...Bf3 13.gf3 c5 14.Nd5-+) 13.d5 e6 14.e4 Na6 15.0-0 Nb4 16.Bb1 ed5 17.ed5 Nf5 (17...Ne8 18.Qb2-+) 18.a3? (18.Ne4 d6 19.a3 Ng7 20.Nd6 Qc7 21.Nb7 Na6-+ (21...Qb7?! 22.Qb2=+)) 18...Na6 (better 18...Nd6!? 19.Nd2-+) 19.Ne4 (better 19.Bf5 gf5 20.Nb5-+) 19...Nd4 20.Nd4 cd4 21.Nf6 Kg7 (better 21...Kh8!? 22.Qd4 d6 23.Ne8 f6 24.Nf6 Qc5=) 22.Qd4+/- h6?? (better 22...Kh8+/-) 23.Nh5 Kh7 (23...Kg8 24.Qg7) 24.Qg7 1-0. ClayPigeons (2200) - mega1979 (2140), Rated Bullet game, lichess.org, 2020.

5.Ba1 b5 6.e3 c6 7.c3 g6 (7...d6 8.Nf3=+) 8.d4 Bg7 9.Nf3 0-0 10.Bd3 Nd5 11.Qc2 Bb7 12.g3 (12.0-0 f5=) 12...Qc7 13.e4 Nf6 14.Nbd2 d6 15.0-0 c5 16.bc5 dc5 17.d5 (17.Rb1 c4 18.Bf1 Bc6+=) 17...c4 18.Be2 Nbd7 (18...e6 19.de6 fe6 20.Nd4=) 19.Bb2 (19.Nd4 Ba6=) 19...Nc5 (19...e6 20.de6 fe6 21.Nd4=) 20.Ba3 (20.Nd4 Ba6=) 20...Nce4 (20...Ra8!? 21.Bb4 Na6=) 21.Ne4+= Bd5 (21...Nd5 22.Rd1+=) 22.Nf6+/- Bf6 23.Nd4 Qb6 24.Qd2 (better 24.Rb1 Bd4 25.cd4+/-) 24...e5? (24...Rd8 25.Qe3+=) 25.Bf3?? (better 25.Bf8 ed4 26.Bb4+-) 25...ed4 26.Bd5 dc3 27.Qe3 Bd4? (better 27...Qe3!? 28.fe3 Rd8 29.Bc4 Ra8+=) 28.Qe7+- b4? (better 28...Bg7+-) 29.Bb4 c2 (29...Bg7+-) 30.Qf8 1-0. Gehaktbalmetjus (2065) - Ammonium (2030), Rated Bullet game, lichess.org, 2019.

5.Ba1 b6 6.e3 Bb7 7.Nf3 e6 8.b5 Be7 9.Be2 d6 10.0-0 Nbd7 11.d4 Qa8 12.Nbd2 0-0 13.c4 Qa7 14.Bc3 Ra8 15.Qb3 Ne4 16.Ne4 Be4 17.Ra1 Qa1 (better 17...Qb7!?=) 18.Ba1+/- Ra1 19.Bf1 g6 (better 19...c5+/-) 20.g3?? (better 20.Nd2 Bb7 21.Qb2+-) 20...Bf3-+ 21.Qb2 Ra5 (better 21...Rd1!? 22.Qa2-+) 22.Bg2 Bg2 23.Kg2 Nf6 24.f3 d5 25.cd5 Nd5 26.Qc2?? (better 26.e4 Ne3 27.Kg1-+) 26...Rb5 (better 26...Ne3 27.Kh3 Nc2-+) 27.Qc6 (27.Qd3 Rb2 28.Kh3 c5-+) 27...Rb2 (27...Ne3 28.Kf2 Rb3 29.Qc7-+) 28.Kg1 (28.Kh3 Ne3 29.Qc3 Nd1 30.Qc7 Bf6-+) 28...Bf8 (28...Ne3!? 29.Qc7 Bf6 30.Qf4-+) 29.h4 (29.Qc1 Re2 30.e4 Ne3-+) 29...Ne3 30.Qc7 Nd5 31.Qd7 Rb3 32.f4 (32.Kf2-+) 32...Rg3 33.Kf1 (33.Kf2 Rg4 34.f5 Rf4 35.Kg3 gf5-+) 33...Rf3 34.Ke1 Rf4 35.Kd1 (35.h5 gh5 36.Qd8 h6-+ (36...Rd4?! 37.Qg5 Kh8 38.Qe5 f6 39.Qd4-+)) 35...Rd4 36.Kc1 (36.Ke1 Rh4 37.Qd8 Rh2-+) 36...Rh4 (better 36...Ba3 37.Kb1 Nc3 38.Kc2 Rd7 39.Kc3-+) 37.Qc8 Rh1 38.Kd2 Rh2 39.Ke1 (39.Kd3 Rh3 40.Ke2 Re3 41.Kf1 b5-+) 39...h5 40.Kf1 Kg7 41.Kg1 Rb2 42.Qc6 Bc5 43.Kf1 (43.Kh1-+) 43…h4 (43...h4 44.Qa4 Ne3 45.Ke1 Bb4 46.Qb4 Nc2 47.Kd2 Nb4 48.Kc3 Rb1 49.Kc4 h3 50.Kd4 h2 51.Ke3 Rb3 52.Ke2 h1Q 53.Kd2 Qg2 54.Ke1 Rb1) 0-1. Gehaktbalmetjus (2145) - behnia_77 (2370), Rated Bullet game, lichess.org, 2020.

5.Ba1 c6 6.e3 d6 7.Nf3 Nbd7 8.Be2 h5 (8...e5 9.0-0=) 9.0-0 e5 10.c4 g6 (10...e4 11.Nd4+=) 11.d4 Qc7 12.de5 de5 13.Qb3 Be7 (13...Bg7 14.Nbd2+=) 14.Rd1 0-0 15.Nc3 Re8 (15...b6 16.Bd3+=) 16.e4 (16.c5 b6 17.Bc4 Rf8 18.Bf7 Kg7+-) 16...Nf8 17.Na4 Bd8? (17...Ne4 18.Be5 Bd6 19.Bd6 Nd6 20.Nc3+=) 18.Nc5 (18.Be5!? Qe7 19.Nc3 Bc7 20.Bc7 Qc7+-) 18...Bg4 (18...b6 19.Nd3+/-) 19.Nd3 (19.h3 Bf3 20.Qf3 b6+/-) 19...Bf3 20.Bf3 Qb8 (20...N6d7 21.c5+/-) 21.Qc3 (better 21.Be5!? Qc8 22.Re1+-) 21...Bc7+/- 22.Nc5 Ne6 23.Qe3 (23.Ne6 Re6 24.Qe3 Rd6 25.Rd6 Bd6+/-) 23...Nf4 (23...Bb6 24.Bc3+=) 24.g3 Ne6 25.Ne6 Re6 26.c5 Kg7 27.h4 (27.Bc3 b6+/-) 27...Re8+= 28.Kg2 Rd8 29.Rd8 Qd8 30.Bc3 Qe7 31.Qd2 (31.Be2 Ng4 32.Qg5 f6+/-) 31...Nd7 32.Qd3 f6 33.Be2 b6 34.f3 (better 34.Qa6!? Nb8 35.Qc8+/-) 34...bc5=+ 35.bc5 Nc5 36.Qc4 Ne6 (36...Bb6 37.Qb4 Qa7 38.Bd2-/+) 37.Qc6= Nd4 38.Bd4 ed4 39.Qc4 Qe5 40.f4 Qe4 41.Bf3 Qe7 42.Qd4 Qd8 43.Qe4 Bb6 44.Qe2 Ba5 45.Qe4 Qd2 46.Qe2 Qe2 47.Be2 f5 48.Kf3 Kf6 49.Bd3 Kg7 50.Be2 Kf6 51.Bd3 Kg7 52.Be2 ½-½. Gehaktbalmetjus (1995) - Grabuark (2170), Rated Bullet game, lichess.org, 2019.

5.Ba1 Nc6 6.b5= Nb8 7.e3 d5 8.Nf3 Bg4 9.Be2 e6 10.h3 Bh5 11.0-0 Bd6 12.d4 Nbd7 13.Nbd2 0-0 14.c4 c6 (14...Bb4 15.c5=) 15.c5+= Bb8 16.bc6 bc6 17.Qa4 Qc7 (17...Ne4 18.Rd1 Qc7 19.Nf1=) 18.g3 (better 18.Bc3!?=) 18...Ne4=+ 19.Ne4? (better 19.Qd1=+) 19...de4-+ 20.Nd2? (20.Ba6 Bf3 21.Rb1-+) 20...Be2 21.Re1 Bf3 (better 21...Bd3-+) 22.Nf3 ef3 23.e4 (23.Qd1 Qa5 24.Rf1 Qb5-+) 23...e5 24.d5 (24.Re3 ed4 25.Qd4 Qe5-+) 24...cd5 25.c6 (25.ed5 Nc5 26.Qc4 e4-+) 25...Nb6 26.Qa5 (26.Qb5 d4-+) 26...d4 (26...Qc6 27.ed5 Nd5 28.Rd1-+) 27.Kh2 (27.Rc1 Qd6 28.Kh2 Bc7-+) 27...Nc4 (better 27...Qc6!? 28.Qd2-+) 28.Qd5 Na3 (28...Qa5 29.Qa5 Na5 30.g4-+) 29.Qb3 Qa5 30.Rc1 (30.Rd1 Qa6 31.Rc1 Qe2-+) 30...Qd2 31.Rc2 (31.Qb2 Qe2 32.Kh1-+) 31...Nc2 32.c7 Qf2 33.Kh1 Qg2 0-1. Gehaktbalmetjus (2065) - roman_dobronovskyi (2295), Rated Bullet game, lichess.org, 2019.

5.Ba1 d6 6.b5 Bd7 7.e3 c6 8.c4 g6 (8...e5 9.d4=) 9.Bf6+= ef6 10.d4 Bg7 11.Nf3 0-0 12.Bd3 (12.bc6 bc6 13.Be2 f5+=) 12...Re8 (12...cb5!? 13.cb5 Bb5 14.Bb5 Qa5 15.Nbd2 Qb5=) 13.0-0+= d5 14.c5 cb5 15.Qb3 Qa5 (15...b6 16.Bb5 bc5 17.dc5+=) 16.Nc3+/- b4 (16...b6!? 17.cb6 Qb6 18.Nd5 Qb7+/-) 17.Nd5+- Nc6 18.Bc4 f5 (18...Rf8 19.Nb6 Bg4 20.Rb1+-) 19.Nb6 Be6 (19...Re7 20.Bf7! Rf7 21.Nd7+-) 20.Be6 (better 20.d5!? Qc5 21.de6 fe6 22.Be6 Kh8+-) 20...fe6 21.Ng5 (better 21.Nc4!? Qa6 22.Rb1+-) 21...Qa3+/- 22.Qa3 ba3 23.Ra1 h6 24.Nf3 e5 25.d5 e4 26.Nd4?? (better 26.Ra3 ef3 27.dc6 bc6 28.gf3+=) 26...Nd4-/+ 27.ed4 (better 27.Ra3!? Nb5 28.Ra5-+) 27...Bd4-+ 28.Ra3 Bc5 29.Ra8 Kf8?? (29...Ra8 30.Na8 b5 31.Nc7-+) 30.Re8?? (better 30.Nd7 Kf7 31.Re8 Bf2 32.Kf2 Ke8 33.Ne5+-) 30...Ke8-+ 31.Nc4 Kd7 32.Ne5 Kd6 33.Ng6 Kd5 34.Nf4 Ke5 (34...Kc4 35.Kf1-+) 35.Ne2 Kd6 (35...b5 36.Kf1-+) 36.g3 (36.Kf1 b5-+) 36...b5 37.Kf1 b4 38.Ke1 (38.Nc1 Kd5-+) 38...Kd5 39.Kd1 Kc4 40.Kc2 (40.h3 Bf2 41.g4 fg4 42.hg4 b3-+) 40...b3 41.Kb1 Ba3 (better 41...Bf2 42.Nf4 Bg1 43.h3-+) 42.Ng1 (42.Nf4 Bb4-+) 42...Kb4 (42...Kc3 43.Ne2 Kd3 44.Nf4 Kd2 45.Nd5-+) 43.Nh3? (43.Ne2 Ka4 44.g4 fg4 45.Nc3 Ka5 46.Ne4 Be7-+) 43...b2 (better 43...Kc3!? 44.Nf4-+) 44.Nf4 (better 44.Kc2-+) 44...e3?? (better 44...Kb3 45.Ne6 Kc3-+) 45.fe3 Kc3 46.Nd3?? (46.Ne2 Kd3 47.Nd4 Ke4=) 46...Kd2 (46...Kd3 47.g4 fg4 48.e4 Bd6 49.Kb2 Bh2 50.Kb3 g3 51.e5 g2 52.Kb4 Be5 53.Ka4 Kc4 54.Ka5 g1Q 55.Ka6 Bb8 56.Kb7 Qa7 57.Kc6 Qc7) 47.Nb4?? (47.Ne5 Ke2 48.Nf7 Ke3 49.Nh6 Ke4=) 47...Ke2 (better 47...Bb4 48.Kb2 Ke3-+) 48.Na2?? (48.Nc2 Bf8 49.Nd4 Ke3 50.Nf5 Ke4 51.g4=) 48...f4?? (48...Kd3 49.h3 h5 50.h4-+) 49.Nc3?? (better 49.ef4 Kd3 50.f5+=) 49...Kf1 (better 49...Kd3 50.ef4 Kc3-+) 50.ef4 1-0. Gehaktbalmetjus (2020) - caruanaVScarlsen (2015), Rated Bullet game, lichess.org, 2019.

5.Ba1 e5 6.e3 d6 7.b5 Be7 8.Nf3 0-0 9.Be2 c6 10.c4 e4 11.Nd4 c5 12.Nb3 d5 13.cd5 (13.Qc2 b6=) 13...Nd5 14.Nc3 Nc3 15.Bc3 Nd7 (15...Be6 16.Qc2=+) 16.0-0 Bf6 (16...Nb6 17.Qc2 Bf5 18.Rd1=) 17.d4 cd4 18.Bd4 Bd4 19.Nd4 (19.Qd4 Nf6+=) 19...Qb6 20.Qb3 Nc5 21.Qb4 Nd3 (21...Bd7 22.Rc1 Rc8 23.Rc2=) 22.Bd3 ed3 23.Rd1 h6 (23...Qg6 24.Qb3 Bh3 25.Qd5+=) 24.Rd3 Bd7 25.Rb3 (25.Rd1 Rc8+/-) 25...Rc8 26.Rb1 Be6 27.Ne6 Qe6 28.b6 Rc4 29.Qb5 Qe4 30.Rd1 Rc2 (30...Rb4 31.Qd7+=) 31.Qb1 Qc4?? (31...Rd2 32.h3 (32.Qe4?? Rd1) 32...Qb1 33.Rb1+/-) 32.g3 (better 32.Rd8 Kh7 33.Rd2+-) 32...g6 (32...f5+/-) 33.Rd8?? (better 33.Qa1 Qc8 34.Qf6+-) 33...Kh7= 34.Qa1?? (better 34.Qf1 Qc6 35.Rd1=) 34...Rc1-+ 35.Qc1 Qc1 36.Kg2 Qc6 37.Kg1 Qb6 38.Rd7 Qb1 39.Kg2 Qe4 40.Kg1 Kg7 41.h4 (41.Rd4 Qb1 42.Kg2 b5-+) 41...b5 42.Rd4 (42.Rd8-+) 42...b4 (better 42...Qd4! 43.ed4 b4-+) 43.Re4+- b3 44.Rb4 b2 45.Rb2 g5 46.Re2 (46.f4 gf4 47.gf4 Kg6+-) 46...gh4 47.f3 (47.gh4!? Kg6+-) 47...hg3 48.Kg2 h5 49.Kg3 h4 (49...Kf6 50.Rg2+-) 50.Kh3 (better 50.Kh4 Kg6+-) 50...f5 (50...Kf6 51.Kh4 Ke6 52.Rc2+-) 51.Kh4 (better 51.e4 fe4 52.fe4 Kf7+-) 51...Kg6 52.Kg3 Kf6 53.f4 Kg6 54.Kf3 Kh5 55.Rg2 (55.Rg2 Kh6 56.e4 fe4 57.Ke4 Kh5 58.f5 Kh6 59.f6 Kh5 60.f7 Kh4 61.f8Q Kh3 62.Qf3 Kh4 63.Qg4) 1-0. Gehaktbalmetjus (2015) - Sameh76 (2075), Rated Bullet game, lichess.org, 2020.

5.Ba1 e5 6.Be5 Bb4 7.Bb2 d6 8.Nf3 Bg4 9.e3 Nc6 10.Be2 Qe7 11.0-0 0-0 12.c3 Bc5 13.d4 Bb6 14.Nbd2 Re8 15.h3 Bh5 16.Ne1 (16.Nc4 Nd7=) 16...Bg6 17.Bd3 Ne4 18.Be4 Be4 19.Ne4 Qe4 20.Qf3 Qe7 21.Qf4 (21.Nd3 Na5=) 21...Qe6 22.c4 (better 22.Qf3!? Qc4 23.Qf5=) 22...Qc4-/+ 23.d5? (better 23.Nf3!?-/+) 23...Qd5 (better 23...Qf4!? 24.ef4 Nb4 25.Nf3-+) 24.Qg4 Ne5 25.Be5 de5 26.Nf3 f6 (26...e4 27.Nh2-+) 27.Qf5 Qd6 (27...Rd8 28.e4 Qd7 29.Qh5-+) 28.e4 (28.Qe4 Rb8-+) 28...Qe7 29.Nh4 Qf7 30.Qf3 g5 (better 30...Ra8-+) 31.g4?? (better 31.Nf5 Qe6 32.Rd1-/+) 31...gh4-+ 32.Qf5 (32.Kh2 Rd8-+) 32...Qg6 33.Rd1 (33.Qd7 Kf8 34.Qd3 h5 35.Qa3 Kg7-+) 33…Qg4 0-1. Gehaktbalmetjus (2140) - JO_ZEYADA (2160), Rated Bullet game, lichess.org, 2020.

5.Ba1 e6 6.Bc3 Nc6 (6...d5 7.Nf3=+) 7.Nf3 (7.b5!? Nb4 8.Nf3=) 7...Nb4 8.Bb4 (8.e3 Be7-/+) 8...Bb4 9.g3 (9.c3 Bf8-/+) 9...Qe7 (9...d5 10.Bg2-+) 10.Bg2 (10.c3 Ba5-/+) 10...b6 (10...d5 11.c3 Bd6 12.d4-+) 11.0-0 Bb7 12.c3 Bc5 13.d4 Bd6 14.Ne5 Bg2 15.Kg2 Be5 16.de5 Nd5?? (better 16...Ne4-/+) 17.e4+/- Nc3 18.Nc3 0-0 (18...Qc5 19.Qa4 0-0 20.Rc1+/-) 19.Qd3 (19.Nb5 Qb4 20.Qd3 Qb2+-) 19...Rd8 20.Rd1 Qc5 21.Qd4 Qa5 22.Ne2 (22.Rb1 d6 23.Nb5 c5+-) 22...h6 (22...d5 23.Ra1 Qc5 24.ed5 ed5 25.Ra7+-) 23.Nf4 (23.Ra1 Qb5 24.Nc3 Qc6+-) 23...d6+/- 24.Qd2 (better 24.h3!?+/-) 24...Qe5= 25.Qe2 g5 (25...d5!?=) 26.Nd3+= Qb5 27.f4 (27.Qc2 Rc8+/-) 27...f6 (27...gf4 28.gf4 Kh7 29.Kf2+=) 28.fg5 fg5 29.e5 (29.Qh5 Kg7+/-) 29...de5 30.Qe4?? (30.Qh5 Qd5 31.Kh3+/-) 30...Qd5-/+ 31.Kf3 (better 31.Qd5 Rd5 32.Nf2-/+) 31...Kf7?? (31...g4!? 32.Ke3 Qd4 33.Qd4 ed4 (worse 33...Rd4 34.Rf1+/-) 34.Ke4 c5-/+) 32.Ke3 (better 32.Ne5 Qe5 33.Qe5 Rd1 34.Qc7 Kf6 35.Kg4+-) 32...Qd4-/+ 33.Kf3 (33.Qd4!? ed4 34.Ke4=+) 33…g4 (33...g4 34.Qg4 Qg4 35.Kg4 Rd4 36.Kh5 Kg7=+) 0-1. amirkhafan (2120) - bikhial (2205), Rated Bullet game, lichess.org, 2014.

5.Ba1 g6 6.e3 Bg7 7.Nf3 0-0 8.Be2 d5 9.0-0 c6 10.c4 (10.b5 cb5 11.Bb5 Nc6=) 10...Bg4 (10...dc4 11.Bc4 b5 12.Be2=+) 11.d4 (11.c5 b6=) 11...Nbd7 (11...Bf3!? 12.Bf3 dc4=+) 12.c5 e5 (12...Qc7 13.Nc3=) 13.Nc3 (13.Ne5!? Be2 14.Qe2 Ne5 15.de5+=) 13...e4 14.Nd2 Be2 15.Qe2 Re8 16.h3 (16.b5 Qe7=) 16...b5 17.Bb2 Nh5 18.Ra1 f5 19.Ra6 Qc7 Black plans f4 20.Nf1 f4 21.Qg4 (21.Bc1 Nb8 22.Ra8 Rf8=) 21...Ndf6 22.Qh4 fe3 23.fe3 (worse 23.Ne3 h6 24.Ng4 g5 25.Nf6 Nf6-/+) 23...Rf8 (23...Nd7!?=) 24.g4+= Nf4 25.ef4 Qf4 26.Rc6?? (better 26.Qe1 Ng4 27.Ne2 (27.hg4?? Bd4 28.Kg2 Qg4 29.Ng3 Qf3 30.Kh3 Bf2 31.Qf2 Qf2-+; 27.Rc6?? Bd4 28.Qf2 Qf2 29.Kh1 Qf1) 27...Qf2 28.Qf2 Nf2 29.Rc6 Nh3 30.Kg2 Rf2 31.Kh3 Re2 32.Bc3+=) 26...e3 (26...Ng4 27.Qe1 Bd4 28.Qf2 Qf2 29.Kh1 Qf1) 27.Qg3?? (better 27.Qe1 Qd4 28.Nd1+-) 27...Qd4+= 28.Qe3 (better 28.Ne3 Qd2 29.Ba1+=) 28...Qc4?? (better 28...Ng4 29.Qd4 Bd4 30.Kg2 Ne5 31.Nb5 Bb2=) 29.Ne2 Qb4 30.Qe6 Kh8 31.Rc8 (better 31.Be5 Qe4 32.Rc7+-) 31...Qb2= 32.Rf8 Bf8 33.Qf7?? (better 33.c6 Bc5 34.Kh1+=) 33...Bg7 (better 33...Bc5 34.Kh1 Ne4-+) 34.g5-/+ h5?? (better 34...Ng8 35.Qf3 b4-/+) 35.gf6+- (35.gf6 Bf6 36.c6+-) 1-0. Gehaktbalmetjus (2065) - mr_Artem (2040), Rated Bullet game, lichess.org, 2019.

5.Ba1 g6 6.Bf6 ef6 7.c3 Bg7 8.d4 0-0 9.e3 d6 10.Bd3 c5 11.Qc2 cb4 12.cb4 Nc6 13.b5 (better 13.Qd2!?+=) 13...Nb4-/+ 14.Qc3 Nd3 15.Qd3 Bf5 16.Nd2?? (16.Qb3 Qa5 17.Ke2 Rc8-+) 16...Qa5 (better 16...Bd3 17.Ne2 Qc7-+) 17.e4 Re8 18.f3 d5 19.Kf2 de4 (19...Bd7 20.Ne2 Bb5 21.Qc3-/+) 20.fe4=+ Be6 (20...Bd7=+) 21.d5 (better 21.Ngf3!?=) 21...Qb6-/+ 22.Kg3 (better 22.Qe3!? Qe3 23.Ke3 Bd5 24.Kd3-/+) 22...Qd6-+ 23.Kf2 Bd7 (better 23...f5!? 24.Nc4 Qc5 25.Ne3 fe4-+) 24.Ngf3-/+ Qc5 25.Qe3 Qb5 (25...Qe3!? 26.Ke3 f5-/+ (26...Bb5?! 27.Rb1 Ba6 28.Kd4=+)) 26.Rb1= Qa6 27.Qb3 (27.Qb6 Bc8=) 27...Qa7 (27...b5 28.Re1-/+) 28.Kf1 (28.Qb6!? Ra8 29.Ke2=) 28...f5 (28...b5 29.Re1-/+) 29.Qb7 Qb7 30.Rb7 Ba4 (better 30...Bc8 31.Rb4 fe4 32.Ne4 Rd8=+) 31.ef5+= gf5 (31...Rd8+=) 32.Ra7 (better 32.Rb6!?+/-) 32...Bb5= 33.Kf2 Bd3 (33...Rd8 34.Nb3=) 34.Kg3 (34.Ra3 Be4 35.d6 Rd8+=) 34...Be4 (34...Rd8 35.Kf4=) 35.d6 (35.Rd7 Kf8 36.d6 Re6 37.Ne4 fe4+=) 35...Rd8 36.d7 (36.Nc4+=) 36...Bf8 (better 36...Bc6=) 37.Ne4+/- Be7?? (37...fe4 38.Nd4 Bd6 39.Kg4 h5 (39...Bh2?? 40.Nc6 Bg1 41.Rb7+-) 40.Kh5 e3+/-) 38.Neg5 (38.Nc3 Bd6 39.Kh4 h6+-) 38...Kf8 39.Nh7 Kg7 40.Nhg5 Bg5 (40...Bd6 41.Kh3 Bf4+-) 41.Ng5 Kf6 42.Nf3 Ke6 43.h4 1-0. Gehaktbalmetjus (2035) - Boobie2 (2030), Rated Bullet game, lichess.org, 2020.

3.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2).

3.b5 a4 4.a3 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5 4.b5 a4).

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

3.b5 b6 4.e3 Bb7 (--> 1.b4 a5 2.b5 b6 3.Bb2 Bb7 4.e3 Nf6).

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

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

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

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

3.b5 d6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6).

3.b5 d6 4.a4 e5 (---> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 a5).

3.b5 d6 4.c4 g6 5.e3 Bg7 6.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 a5 6.b5 d6).

3.b5 e5 4.a4 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 a5).

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

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

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

3.b5 g6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 g6).

3.b5 g6 4.c4 Bg7 5.Nf3 d6 6.e3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 a5 6.b5 d6).

3.b5 g6 4.e3 Bg7 5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 a5).

3.a3 b5 4.e3 Bb7 5.d3 d6 6.Nd2 Nbd7 7.Ngf3 e6 8.Rg1 Be7 9.g4 c5 10.c3 Rg8 11.Rc1 Rc8 12.g5 Nd5 13.h4 N7b6 14.Nb3 Na4 15.Ba1 Ndb6 16.Na5 Ba8 17.Be2 g6 18.Qd2 Rc7 19.Nh2 Nd5 20.Ng4 cb4 21.ab4 Qc8 22.c4 bc4 23.dc4 Ndb6 24.Nh6 Rf8 25.Bg7 e5 26.Rg3 d5 27.Be5 Rd7 28.cd5 1–0. papopapirus (1810) – mark19116 (1770), lichess.org, 2016.

3.a3 Nc6 (--> 1.b4 a6 2.Bb2 Nc6 3.a3 Nf6).

3.a3 g6 4.Nf3 Bg7 5.e3 Nc6 6.Be2 d5 7.0-0 0-0 8.c4 Be6 9.cd5 Qd5 10.Nc3 Qb3 11.Qb3 Bb3 12.d4 Rfd8 13.Nd2 Be6 14.Nce4 Nd7 15.Ng5 Bd5 16.e4 Nd4 17.Bd4 Bd4 18.Rac1 (better 18.ed5!? Ba1 19.Ra1=+) 18...Bc6-/+ 19.Nb3 Bb2 20.Rb1 Ba3 21.Nd4 Ne5 22.Nc6 Nc6 (22...bc6?! 23.f4 Rd2 24.Ba6-/+) 23.Bf3 h6 24.Nh3 Bb4 25.e5 a5 26.Nf4 (26.Rfc1 Ra6-+) 26...Ne5 27.Bb7 Rab8 28.Bd5 (28.Ba6-+) 28...g5 29.Bf7 Kf7 30.Ne2 Kg6 31.g3 (31.Rfd1 Bc5 32.Nc3 Rd1 33.Rd1 Ng4-+) 31...Nf3 32.Kg2 Nd2 33.h4 Nb1 34.Rb1 Rd2 35.Kf1 a4 36.hg5 a3 37.Nc1 Rf2! 38.Kf2 Bc5 39.Ke2 Rb1 40.Nd3 a2 (40...a2 41.gh6 a1Q 42.Nf4 Kf5 43.h7 Rb2 44.Kd3 Qd1 45.Kc4 Qd4 mate) 0-1. Neumann,Frank - Ustimenko,Aleksandr, OP-2012-0-02113 (HP), 2012.

3.a4 d5 (--> 1.b4 d5 2.Bb2 a6 3.a4 Nf6).

3.a4 e5 4.Be5 Nc6 5.d4=+.

3.b5 ab5 4.e3 c6 5.c4 bc4 6.Bc4 d5 7.Bb3 (7.Be2 Bf5-/+) 7...e6 8.Nf3 Be7 9.0-0 0-0 10.d4 b6 11.Nbd2 c5 12.Bc2 c4 13.e4 (13.Bc3 Nc6-/+) 13...b5 (13...de4 14.Ne5-+) 14.e5-/+ Nfd7 15.a3 Nc6 (15...Qa5 16.Qe2-/+) 16.Qb1 g6 17.h3 (17.Bc3 Qb6 18.Qb2 f6 19.ef6 Rf6-/+) 17...b4 (17...Qa5 18.Rc1-+) 18.ab4-/+ Ra1 19.Ba1 Nb4 20.Bd1 Ba6 21.Re1 (21.Bc3 Qa5-/+) 21...Nd3-+ 22.Re3 Bg5 (22...Qb6!?-+) 23.Ng5-/+ Qg5 24.Nf3 Qe7 25.Bc2 Nb4 (25...Rb8 26.Qd1=+) 26.Bd1 (26.Bb2 Nc2 27.Qc2 Ra8=+) 26...Rb8-/+ 27.Bc3 Nd3 28.Qc2 Nf8 29.Nh2 (29.Ne1 Nb4 30.Qd2 Nc6=+) 29...h6 (29...Qa3 30.Nf3-/+) 30.Rg3 Nh7 31.Ng4 Kg7 32.Qd2 h5 33.Qh6? (better 33.Nh2!?-/+) 33...Kg8-+ 34.Nf6 (34.Ne3 Qa3 35.Kh2 Qc3 36.Bh5 Ne5=+) 34...Nf6 35.ef6 Qf6 36.Bh5?? (36.Rf3 Qe7 37.Bc2 Qd6-+) 36...Qf2 (36...Rb1 37.Kh2 Nf2-+ (37...Qf2?! 38.Rg6 fg6 39.Qg6 Kf8 40.Qe8 Kg7 41.Qg6 Kh8 42.Qh6 Kg8 43.Qg6 Kh8 44.Qh6 Kg8 45.Qg6=)) 37.Kh2 Nf4 (37...Qf4 38.Qf4 Nf4 39.Bd1-+) 38.Rf3?? (38.Bf3 Rb1 39.Rg4 Qg1 40.Kg3=+) 38…Qg2 0-1. ClayPigeons (2140) - maqwer (2280), Rated Bullet game, lichess.org, 2020.

3.Nc3 e5 4.a3 d5 5.d3 (5.e3 c5+=) 5...c5–/+ 6.e3 (6.Na2 Nc6–/+) 6...cb4 7.ab4 (better is 7.Na2!?–/+) 7...Bb4–+ 8.Nf3? (8.d4 Ne4 9.Nge2–+) 8...d4 9.ed4 (9.Ne5 Nd5–+) 9...ed4 10.Qe2 Be6 11.Ra4 (11.Qd2 Nc6 12.Ra4 Bc3 13.Bc3 dc3 14.Qc3 0-0–+) 11...Bc3 12.Bc3 dc3 13.Ng5 (13.Nd4 Qb6 14.Ne6 fe6–+) 13...0-0 14.g3 (14.Ne6 fe6 15.Qe5–+) 14...Re8 15.Ne4 Ne4 (15...Nd5!? 16.g4–+) 16.Re4 Nc6 17.Bg2 Nd4 18.Qd1 Bd5 19.Re8 Qe8 20.Kf1 Bg2 21.Kg2 Qc6 22.Kg1 (22.Kh3 Nc2! 23.Qb1–+) 22...Re8 23.Qg4 Re1 0–1. vaingrecsky – pcmvr, net–chess.com, 2017.

3.c4 b6 4.Nf3 Bb7 5.e3 e6 6.a3 Be7 7.Be2 0-0 8.0-0 d6 9.Nc3 Nbd7 10.d4 c5 11.Qb3 Qc7 12.Rfd1 h6 13.Rac1 Rab8 14.a4 White prepares b5 (14.d5 Ra8+=) 14...Rfe8 15.dc5 dc5 16.b5 a5 17.h3 Rbd8 18.Rd2 Bf3 19.gf3 Ne5 20.Rd8 Rd8 21.Rd1 Ng6 22.Rd8 Qd8 23.Qd1 Qc7 24.Ne4 Ne4 25.fe4 Qd8 26.Qd8 Bd8 27.Bh5 Nf8 28.f4 Bf6 29.e5 Bd8 30.Kg2 f5 31.Be8 g5 32.Kf3 Kg7 33.e4 fe4 34.Ke4 gf4 35.Kf4 Bg5 36.Kg4 Ng6 37.Bc3 Bd8 38.Kf3 Bc7 Attacking the isolated pawn on e5 39.Ke4 Ne7 40.Bh5 Ng6 41.Bg4 Nf8 42.Bd2 Kg6 43.h4 h5 44.Bf3 Nd7 45.Bf4 Bd8 46.Bg3 Bc7 47.Be2 Nf6 48.Kf4 (worse 48.ef6 Bg3 49.f7 Kf7 50.Bh5 Ke7=+) 48...Nd7 49.Bd3 Kf7 50.Ke4 Nf6 51.Kf4 Ng4 (51...Nd7 52.Kg5=) 52.Ke4 Bb8 53.Be2 Nf6 (53...Kg6!?=) 54.Kf4+/- (worse 54.ef6 Bg3 55.Bh5 Kf6=+) 54...Kg6 55.Bf3 (55.Be1!?+=) 55...Nd7= 56.Ke4 Nf6 57.Ke3 Ng4 58.Ke4 Nf6 59.Kf4 Nd7 60.Ke4 Nf6 61.Kf4 Nd7 62.Ke4 ½-½. Melich,Jindrich (2080) - Riedl,Max (2140), CZE-chT2a (HP), 2007.

3.d3 e6 4.e4 (4.a3!?+=) 4...Bb4–/+ 5.c3 (5.Nd2 Nc6–/+) 5...Ba5 (5...Be7 6.e5 Nd5 7.c4–/+) 6.Be2 (6.Nd2 b5–/+) 6...0-0 (6...Nc6 7.Nf3–/+) 7.Nf3 Re8 (7...Nc6 8.Nbd2–/+) 8.0-0 (8.e5 Nd5–/+) 8...Bb6 (8...e5 9.Nbd2–/+) 9.Nbd2 (9.e5 Nd5+=) 9...d6–/+ 10.d4 (10.Nc4 Ba7–/+) 10...Nc6 (10...e5 11.Qc2–/+) 11.c4 (11.Rb1 e5–/+) 11...h6 (11...e5 12.c5 Ba7 13.d5–/+) 12.Qc2+= Qe7 (12...e5 13.c5 dc5 14.de5+=) 13.h3 (13.Rfd1 e5 14.c5 dc5 15.de5 Nh5+=) 13...Ba5 (13...Nd7!?–/+) 14.Nb3= Bb6 15.e5 (15.Nbd2 Nd7+=) 15...de5 (15...Nd7 16.Ba3+=) 16.de5 Nd7 17.a4 Nb4 (17...Nc5 18.Ba3+=) 18.Qd2 (18.Qc3 a5+=) 18...a5 (18...Rd8 19.a5 Ba7 20.Rfd1+=) 19.Ba3 (19.Rad1 Nc6+=) 19...c5 20.Rad1 (20.Rfd1 Bc7 21.Qf4 Nc2–/+) 20...Ba7 (20...Bc7 21.Qe3–/+) 21.Rfe1 (21.Na5 Ne5 22.Ne5 Bb8=) 21...b6 (21...Bb8 22.Bd3–/+) 22.Bb2 Bb8 23.Bd3 (23.Qc1 Bb7 24.Rd2 Bc7–/+) 23...Nd3 24.Qd3 Rd8 25.Qe4 Ra7 26.Nh2 (26.Nbd2 Nf8–/+) 26...Qg5 (26...Bb7 27.Qc2–+) 27.f4–/+ Qe7 28.Ng4 (28.Qe3 Bb7–/+) 28...Bb7 29.Qe3 (29.Qc2 Bc6 30.Nc1 Rb7–/+) 29...Bc7 (29...Qh4 30.Rd3–/+) 30.Nd2 (30.Rd2 Bc6 31.Qg3 Kf8–/+) 30...Nf8 (30...Bc6 31.Qb3–/+) 31.Ne4 Rd1 (31...Ng6 32.f5 Be4 33.f6 Rd1 34.fe7 Re1 35.Qe1–/+) 32.Rd1 Bc6 33.Nd6 (33.Nc3 Ra8–/+) 33...Ra8 (33...Ba4 34.Qg3 A) 34...Bd1 35.Nh6 Kh7 36.Ndf5 ef5 37.Nf5 Be5 38.Ne7 Re7 39.Be5+- (worse is 39.fe5 Rd7+=); B) 34...Ng6–+) 34.f5–/+ ef5 (34...Qg5 35.Qg3 ef5 (35...Ba4? 36.h4 Qg4 37.Qg4 Bd1 38.Qd1+-) 36.Nf5 Kh7+= (36...Ba4 37.Ngh6 Qh6 38.Nh6 Kh7 39.Rf1+-)) 35.Nf5+= Qe6 36.Ngh6 (36.Rf1 Bd8 37.Nfh6 Kh7 38.Rf7+=) 36...gh6–/+ 37.Nh6 Kh7 38.Ng4 (38.Rf1 f5 (38...Qh6 39.Rf7 Qg7 40.Rg7 Kg7 41.Qg5 Ng6 42.e6 Kf8 43.Qf6 Ke8 44.Qg6 Kd8 45.Qg8 Ke7 46.Qf7 Kd8 47.Qf8 Be8 48.Bf6 Kc8 49.Qe8 Kb7 50.Qa8 Ka8 51.e7 Kb7 52.e8Q Ka7 53.Qc8 Bg3 54.Bd8 Be5 55.Bc7 Bd4 56.Kf1 b5 57.Qb8 Ka6 58.cb5) 39.Rf5 Nd7 (39...Qh6 40.Rf7 Qg7 41.Rg7 Kg7 42.Qg5 Ng6 43.e6 Kf8 44.Qf6 Ke8 45.Qg6 Kd8 46.Qg8 Ke7 47.Qf7 Kd8 48.Qf8 Be8 49.Bf6 Kc8 50.Qe8 Kb7 51.Qa8 Ka8 52.e7 Kb7 53.g4 Bf4 54.e8Q Ka7 55.g5 Bc7 56.g6 b5 57.Qd7 Kb8 58.g7 Kb7 59.g8Q Kb6 60.Qge6 Ka7 61.Qc7 Ka8 62.Qd5) 40.Rf7 Qf7 41.Nf7 Kg8+-) 38...Rd8 (38...Qg6 39.Rf1 f5 40.ef6=) 39.Nf6? (better is 39.Rd8 Bd8 40.Qd3 f5 41.Qd8 fg4 42.Qf8 gh3 43.gh3 Ba4 44.Qf3+=) 39...Kg7?? (better is 39...Qf6! 40.ef6 Rd1 41.Kf2 Ne6–+ (41...Ba4?! 42.Bc1 Rc1 43.Qc1+=)) 40.Rf1?? (better is 40.Qg5 Ng6 41.Rd8 Bd8 42.Nh5 Kh7 43.Qd8 Qc4 44.Qf6+-) 40...Ng6= 41.Qg5?? (better is 41.Nh5 Kh7 42.Nf6 Kg7 43.Nh5 Kh7 44.Nf6 Kg7=) 41...Rh8–+ (41...Qc4 42.e6 Bh2 43.Kh2 Qf1 44.Nd5 Kg8 45.Qh6 Qg1 46.Kg1 Bd5 47.Qg7; 41...Ba4 42.Nd5 Rc8 43.Nc7 Rc7 44.Rf6+-) 42.Nd5 (42.Nh5 Kf8 43.Rf6 Bd8 44.Re6 Bg5 45.Rc6 Rh5 46.Rb6 Bd8–+) 42...Bd8 (42...Bd5 43.cd5 Bd8 44.Rf7 (worse is 44.de6 Bg5 45.ef7 Rh4–/+) 44...Qf7 45.e6 Bf6 46.ef7 Bb2 47.Qg4+=) 43.Qg3 Bh4 (43...Rh6 44.Qf3 Kg8 45.Qb3–+) 44.Qf3 (better is 44.Qb3 Ne5 45.Rf4–+) 44...Bd8 (44...Kg8 45.Qd1–+) 45.Qg3 Bh4 46.Qf3 Bd8?? (46...Kg8 47.Qd1–+) 47.Qd3?? (47.Qg3 Rh6 48.Qd3 Ba4 49.Ne3–+) 47...Ne5?? (47...Ba4 48.Ne3 Kh7–+ (48...Ne5 49.Nf5 Kg6 50.Qg3 Bg5 51.Be5+-)) 48.Qg3+/– Qg6?? (better is 48...Kh7 49.Be5 Rg8 50.Qd3 Kh6+/–) 49.Be5+- (49.Qe5?! f6 50.Rf6 Bf6 51.Qf6 Qf6 52.Bf6 Kg8 53.Bh8 Kh8 54.Nb6 Kg7+-) 49...Bf6 (49...Kg8 50.Qg6 fg6 51.Bh8 Ba4+-) 50.Bf6 Kf8 51.Qg6 (51.Qd6 Kg8 52.Qd8 Be8 53.Qe8 Kh7 54.Qh8) 51...fg6+- 52.Bh8 (52.Bh8 Ke8 53.Nb6+-) 1–0. vaingrecsky – grahamtrue, net–chess.com, 2017.

3.e3 b6 4.Nf3 Bb7 5.Be2 e6 6.a3 Be7 7.Rg1 0-0 8.g4 h6 (8...b5 9.g5 Ne4 10.d3 Ng5 11.Ng5 Bg5 12.Bg7 Kg7 13.h4=) 9.h4 (9.g5 hg5 10.Ng5 d5=) 9...d5 (9...Nh7 10.g5 hg5 11.hg5+=) 10.g5 Ne4? (better 10...hg5 11.hg5 Ne4=) 11.d3+- Nf2 (11...Nd6 12.gh6 g6 13.h5+-) 12.Kf2 hg5 13.Ng5 Bg5 (13...Bf6 14.c3+-) 14.Rg5 e5 15.Qg1 (15.Be5?! f6 16.Rg7 Kg7 17.Qg1 Kf7=+) 15...g6? (15...Qf6 16.Ke1 Re8+-) 16.Be5 f6 (16...Nc6 17.Bb2 d4+-) 17.Rg6 Kf7 18.Rf6 (better 18.Bc7 Qd7 19.Rg7 Ke6+-) 18...Qf6 19.Bf6 Kf6 20.Qg5 (20.Ke1 Nd7 21.Qg3 Bc6 22.Qc7 Rac8 23.Qd6 Kg7+-) 20...Ke6 21.Ke1 Rf6 (21...Nd7+-) 22.Bg4 Ke7 23.Qe5 Kf7 24.Bh5 Kg7 25.Qg5 Kh7 26.Qf6 Nc6 (26...Nd7 27.Bg6 Kh6 28.Qf7 Rh8 29.Bf5 Nf8 30.Qf6 Kh5 31.Qg5) 27.Qg6 (27.Bg6 Kg8 28.Qf7 Kh8 29.Qh7) 27...Kh8+- 28.Bg4 Rf8 29.Qh6 (29.Be6 Rf1 30.Kf1 Nb4 31.Qg8) 29...Kg8 30.Be6 Rf7 31.Qg6 Kf8 (31...Kh8 32.Bf7 Nb4 33.Qg8) 32.Qf7 1–0. FeegLood (2685) – ChessTimF (1975), lichess.org, 2015.

3.e3 c5 4.bc5+= Nc6 (4...e6 5.d4 b6 6.Nf3+=) 5.Nc3 d5 (5...e6!? 6.d4 d6 7.cd6 Bd6+/–) 6.Na4+/– b5 (better is 6...Bg4!? 7.Nf3 e5+/–) 7.cb6+- Bb7 (7...Nd7 8.c4 Nb6 9.Nb6 Qb6 10.cd5 Qb2 11.dc6+-) 8.Nf3 e6 9.c4 Be7 (9...dc4 10.Bc4 Nd7 11.Rb1+-) 10.c5 Ne4 11.Rc1 f6 (11...Bf6 12.Bf6 Qf6 13.Be2+-) 12.d3 Nf2 (12...Nc5 13.Nc5 Qb6+-) 13.Kf2 h5 (13...0-0 14.Be2+-) 14.Nh4 g5 (14...Ne5 15.Be2 0-0 16.d4+-) 15.Ng6 Kf7 (15...Rh6 16.Ne7 Ke7 17.d4+-) 16.Nh8 Qh8 17.Be2 Qh6 (17...Kg6 18.Rf1+-) 18.Bh5 Kg7 (18...Kf8 19.Bc3+-) 19.h4 e5 (19...Rf8 20.hg5 Qg5 21.Rh3+-) 20.hg5 Qg5 21.Rh3 e4 (21...Qf5 22.Rf3 Qh7+-) 22.Rg3 Qg3 23.Kg3 Rh8 24.Bf6! Bf6 (24...Bf6 25.Qg4 Double attack; 24...Kf6 25.Qf1) 25.Qg4 Kf8 26.Rf1 Ke7 (26...Ne5 27.Rf6 Ke7 28.Qg7 Nf7 29.Rf7 Ke6 30.Qf6) 27.Rf6! Kf6 (27...Kf6 28.Qg6) 28.Qg6 Ke7 (28...Ke5 29.Qg7 Ke6 30.Bg4) 29.Qd6 1–0. Janek – Vindo, internet, 2018.

3.e3 c6 4.c4 d5 5.a4 dc4 6.Bc4 e6 7.Qb3 Nbd7 8.b5 ab5 9.ab5 Ra1 10.Ba1 Be7 11.Nf3 0-0 12.0-0 Nb6 13.Be2 Nbd5 14.Nc3 c5 15.d4 cd4 16.Nd4 Nc3 17.Bc3 Nd5 18.Bb2 Bf6 19.Rd1 Qb6 20.Bf3 Rd8 21.Nf5 ef5 22.Rd5 Be6 23.Rd8 Qd8 24.Bf6 Qf6 25.Qb1 b6+= 26.g3 g5 27.Kg2 g4 28.Bc6 Qe5 29.Qd3 Kg7 30.Qd4 Qd4 31.ed4 Kf6 32.h4 Ke7 33.f4 Kd6= 34.Kf2 Bd5 35.Be8 h6 36.Ke3 Bc4 37.Kd2 Kd5? 38.Bf7 Kd4= 39.Be8 Be6 40.Bc6 Bd5 41.Bd7 Be4 42.Be8 Kc4 43.Ke3 Kc3 44.Bd7 Bc2 45.Bc8 Bd3 46.Bd7 Bc2 47.Bc8 Bd3 48.Bd7 Bc2 ½–½. carocan (1670) – ghitaclaudia (1795), kurnik, 2011.

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

3.e3 d6 4.d4 Nc6 5.a3 e6 6.Nf3 b6 7.Be2 Be7 8.Nbd2 Bd7 9.0-0 b5 10.c4 bc4 11.Nc4 d5 12.Nce5 Ne5 13.Ne5 Bd6 14.Rc1 Be5 (better is 14...Bb5!?+=) 15.de5+/– Ne4 (better is 15...Ng8!?+/–) 16.f3+- Ng5 17.Qc2 (17.h4 Nf3 18.Rf3 Bb5+-) 17...Ra7 18.Bd4 Rb7 19.Ba6 Rb8 20.Qc7 Qc7 21.Rc7 Rd8 22.Bc5 Ra8 23.b5 Kd8 24.Bd6 Rc8 25.Bc8 Bc8 26.Rfc1 Ba6 27.ba6 Re8 28.Rc8 Kd7 29.R1c7 1–0. Fournier,Frederic – cdlefgo7, Club Owl21 Owl21.com, 2007.

3.e4 d6 4.Nc3 c6 5.Nf3 Nbd7 6.Bc4 e6 7.0-0 b5 8.Bb3 Bb7 9.a3 Be7 10.d3 0-0 11.Ne2 a5 12.Nf4 a4 13.Ba2 e5 14.Nh3 h6 15.Qd2 Nh7 16.Kh1 Kh8 17.Nhg1 c5 18.Ne1 Nb6 19.bc5 dc5 20.f4 ef4 21.Qf4 f6 22.Nef3 c4 23.e5 Bf3 24.Nf3 Nd5 25.Qe4 c3 26.Bd5 cb2 27.Rab1 Ba3 28.ef6 Nf6 29.Qf5 Nd5 30.Qg6 Rf6 31.Qe4 Nc3 32.Qe1 Nb1 33.Qb1 b4 34.Ne5 Rf1 35.Qf1 Qf6 36.Nf7 Kh7 37.Qe1 Qf7 38.Qe4 g6 39.h3 Re8 40.Qc6 b1Q 41.Kh2 Qbf1 0–1. Eudesp (1610) – mark19116 (1670), lichess.org, 2016.

3.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 a6).

4.b5 Na5 5.e3 e6 (5...d5 6.Nf3=) 6.Nf3 Qe7 (6...d5 7.Ne5=) 7.Be2+= Qb4?? (better is 7...b6+=) 8.Bc3+- Qc5 (8...Qg4 9.Ba5 ab5 10.Bc7 ba4 11.0-0+-) 9.Ba5 ab5 (9...b6 10.Bc3+-) 10.ab5 Qb5 1–0. DEFFM – GuestPPJZ, freechess.org, 2018.

4.b5 ab5 5.ab5 Ra1 6.Ba1 Na5 7.e3 b6 8.Nf3 d6 (8...e6 9.Be2=) 9.Be2 (9.Bf6 ef6 10.d4 d5+=) 9...e5= 10.0-0 Be7 11.c4 0-0 12.d4 ed4 13.Nd4 Be6 14.Ne6 fe6 15.Qc2 Nb7 16.Nd2 Nc5 17.Bc3 Qd7 18.Ra1 d5 19.Bd4 Bd6 20.f4 Re8 (20...Qe7 21.Bf3+=) 21.Ra7 e5 (21...Qf7 22.Bf3+/–) 22.Be5 Be5 23.fe5 Re5 24.cd5 Nd5 (better is 24...Re3 25.Nc4 Re8+/–) 25.Bc4+- Kf8 26.Qh7 Ne3?? (better is 26...Ne6 27.Qd3 Nf6 28.Qd7 Nd7 29.Be6 Re6 30.Rc7 Ke8+-) 27.Ra8 Ke7 28.Qg7 Kd6 29.Qf8 Re7 (29...Qe7 30.Rd8 Nd7 31.Qh6 Kc5 32.Qc6 Kb4 33.Rd7 Qc5+-) 30.Qf4 Re5 31.Qd4 Nd5 32.Bd5 Rd5 (32...Re1 33.Kf2 Qf5 34.Ke1 Nd3 35.Kd1 Qg4 36.Qg4 Nf2 37.Kc2 Ng4+-) 33.Qf6 Ne6 (33...Qe6 34.Nc4 Kd7 35.Rd8) 34.Ne4 1–0. DEFFM – GuestMDBR, freechess.org, 2018.

4.b5 Nb8 5.e3 c6 6.Nf3 d5 7.c4 Bg4 8.Be2 Bf3 9.Bf3 dc4 10.bc6 Nc6 11.Na3 e6 (11...Rc8!?=) 12.Nc4+= b5?? (better is 12...Rc8+=) 13.Bc6+- Nd7 14.ab5 Rc8 15.Ne5 Rc6 16.Nc6 Qc8 17.Ra6 Qb7 (17...Nc5 18.Ra3 Nb7+-) 18.Qa4 Nc5 19.Ra8 Kd7 (19...Qc8 20.Rc8 Kd7 21.Rd8 Kc7 22.Qa5 Kb7 23.Rb8) 20.Rd8 Kc7 21.Be5 Kb6 (21...Bd6 22.Bd6 Kb6 23.Qa5) 22.Qa5 1–0. GuestTSTG – GuestHJFV, freechess.org, 2018.

4.b5 ab5 5.ab5 Ra1 6.Ba1 Bg7 7.c4 0-0 8.e3 Ne4 9.Nf3 (better 9.Bg7 Kg7 10.Nf3+=) 9...Ba1–/+ 10.Bd3? (better 10.Qa4 Bg7 11.Qa8–/+) 10...Nc5 (10...d5 11.Nc3 Bc3 12.dc3–+) 11.Be2 Bg7 12.0-0 e6 (12...e5 13.Ne5 Be5 14.d4–+) 13.d4 Nb3?? (better 13...Ne4–+) 14.Qb3+= d5 (14...d6 15.Nc3+=) 15.Nc3 dc4 16.Bc4 Bd7 17.Ne4 c6 18.Nc5 cb5 19.Bb5 Bb5 (19...Bc8 20.Be2+-) 20.Qb5 Nc6 (20...b6 21.Na4+-) 21.Qb7+- Qd5 22.Qd7 (22.Qc7 Nb4+-) 22...Qd7+- 23.Nd7 Rd8 24.Nc5 (24.Nb6 Rb8 25.Nc4 Ra8+-) 24...Nb4 (24...e5!? 25.de5 Ne5+-) 25.h3 Bf8 26.Ne4 (26.Rb1 Nd5+-) 26...f5 27.Ned2 (27.Neg5 Rd6 28.Ne5 Be7+-) 27...Bd6 (27...Nd3 28.Rb1+-) 28.Nc4+- Bc7 29.Nce5 (29.Ra1 Rb8+-) 29...Be5 30.Ne5 Kg7 (30...f4 31.g3 fe3 32.fe3+-) 31.Rb1 Kf6?? (better 31...Nd5+-) 32.Rb4 f4 (32...Re8+-) 33.Rb7 fe3 (33...Rf8 34.e4 h6+-) 34.Rf7 Kg5 35.f4 Kh6 (35...Kh4 36.Kh2 Rd7 37.g4 Rf7 38.Nf3) 36.Ng4 Kh5 37.Rh7 1–0. BeepBeepImAJeep (2520) – slowpoke81 (1765), lichess.org, 2016.

4.e3 Bg7 5.Nf3 0-0 6.b5 d6 7.Be2 ab5 8.ab5 Ra1 9.Ba1 Ne8 10.Bg7+= Ng7 11.0-0 e5 12.c4 c5 13.Nc3 f5 14.Nd5 (14.d4 cd4 15.ed4 e4+=) 14...Ne6 (14...Be6 15.d3=) 15.h4 (15.d4 e4 16.Ne1 cd4 17.ed4 Nd7+=) 15...Nc7 (15...e4 16.Ne1=) 16.Nc7 Qc7 17.Ng5 h6 18.Nf3 Qe7 19.d3 Qh4?? (better 19...f4=) 20.Nh4+- g5 21.Nf3 Nd7 22.Nd2 Nf6 (22...Kf7 23.Qa4+-) 23.Nb3 (23.Qa4 Nd7+-) 23...Kg7 (23...f4 24.d4 cd4 25.ed4+-) 24.Qc2 (24.Qa1!? f4+-) 24...f4 25.Ra1 fe3 26.fe3 Bg4 (26...Kg6 27.Rf1 Bf5 28.g4+-) 27.Bg4 Ng4 28.Ra7 (better 28.d4 Ne3 29.Qd3 Ng2 30.de5+-) 28...Rf1 29.Kf1 Ne3 30.Ke2 Nc2 31.Rb7 Kf6 32.Rh7 Kg6 (32...Ke6 33.b6 Nb4 34.b7+-) 33.Rd7 Kf5 (33...Kf6 34.Rd6 Ke7+-) 34.Rd6 e4 35.de4 Ke4 36.Rh6 (36.b6 Ke5 37.Rd5 Kf4 38.b7 Kg4 39.b8Q Ne1 40.Qc8 Kh5 41.Qh3 Kg6 42.Rd6 Kf7 43.Qe6 Kf8 44.Rd7 Ng2 45.Qf7) 36...Kf4 37.b6 Nd4 (37...Nb4 38.b7 Nc6 39.Rc6 Kf5 40.b8Q Kg4 41.Qc8 Kg3 42.Qh3 Kf4 43.Rf6 Ke4 44.Qe6) 38.Nd4 cd4 (38...Kg3 39.b7 Kg4 40.b8Q cd4 41.Qb7 Kf4 42.Qf7 Ke4 43.Re6) 39.b7 d3 (39...Kf5 40.b8Q g4 41.Qf8 Ke5 42.Kd3 g3 43.Qf6) 40.Kd3 Kg4 (40...Ke5 41.b8Q Kf5 42.Qf8 Ke5 43.Qf6) 41.b8Q Kf5 42.Rh5 (42.Qf8 Ke5 43.Qf6) 42...Kg4 (42...Kg6 43.Qe8 Kg7 44.Qe7 Kg6 45.Rg5 Kh6 46.Qg7) 43.Rg5! Kg5 44.Qg3 (44.Qe5 Kg6 45.c5 Kh6 46.c6 Kh7 47.c7 Kg6 48.c8Q Kh7 49.Qd7 Kg6 50.Qdg7) 44...Kh5 (44...Kf5 45.c5 Kf6 46.Qd6 Kf5 47.c6 Kg5 48.c7 Kg4 49.c8Q Kg5 50.Qg8 Kf5 51.g4) 45.c5 (45.c5 Kh6 46.c6 Kh5 47.c7 Kh6 48.c8Q Kh5 49.Qch3; 45.Ke4 Kh6 46.Kf5 Kh7 47.Kf6 Kh6 48.Qg6) 1-0. Gehaktbalmetjus (2080) - PacerPrastari (2025), Rated Bullet game, lichess.org, 2020.

4.cb5 ab5 5.e3 c6 6.a4 e6 7.ab5 Ra1 8.Ba1 Bb4 9.bc6 Nc6 10.Nf3 Qa5 11.Nc3 (11.Bf6 gf6 12.Be2 Rg8=) 11...Ba6 (11...e5 12.e4+=) 12.Be2 Be2 13.Ne2 0-0 (13...e5!?+=) 14.Bf6= gf6 15.0-0 Ne5 16.Ne5 fe5 17.d4 ed4 18.Nd4 Qd5 (18...f5!?+=) 19.Qg4+/– Kh8 20.f4 (20.Ne6!? de6 21.Qb4+/–) 20...Bd2 (better is 20...Bc5=) 21.Rf3?? (better is 21.Qe2 Bc3 22.Nb5=) 21...Rg8 22.Qh4?? (better is 22.Qh3–/+) 22...Be3–+ 23.Re3 (23.Kh1 Bd4 24.Qe1–+) 23...Qd4 (23...Qg2) 24.Kf2? (24.Qf2 Rc8 25.Re1 Rc4 26.Qd4 Rd4–+) 24...f5?? (better is 24...Qd2 25.Re2 Rg2 26.Kg2 Qe2 27.Kg1–+) 25.Kf3?? (25.Kf1 Rg2 (25...Qe3?! 26.Qf6 Rg7 27.Qd8 Rg8 28.Qf6 Rg7 29.Qd8 Rg8 30.Qf6=) 26.Kg2 Qe3 27.Qd8 Kg7 28.Qd7 Kh6–/+) 25...Rg4 (25...Qd5 26.Ke2 Qa2 27.Ke1 Qb1 28.Kf2 Qc2 29.Ke1 Qc1 30.Kf2 Qd2 31.Re2 Rg2 32.Kg2 Qe2 33.Kg1 Qg4 34.Qg3 Qg3 35.hg3 Kg7–+) 26.Qd8+= Kg7 27.Qe7 Kh6 28.g3 Qd1 29.Kf2 Qd2 30.Re2 Qd4 31.Re3 Rf4 (better is 31...Rg7!? 32.Qf8 Kg6+=) 32.gf4+= Qf4 33.Rf3 (33.Ke2 Qh2 34.Kd3 Qh1+=) 33...Qh2= 34.Ke3 Qe5 35.Kf2 Qh2 36.Ke3 Qe5 37.Kf2 Qh2 38.Kf1 Qh1 39.Ke2 1–0. GuestKHNR – lqokzky, freechess.org, 2017.

4.cb5 ab5 5.e3 Nc6 6.a3+= Rb8 7.Nc3 Na7 (7...Ba6!?+=) 8.Nf3+/– g6 9.Qb3 (9.a4 Nc6+/–) 9...Bg7 10.d4 0-0 11.e4 (11.a4 c6+=) 11...Bb7 12.Bd3 d6 13.Rd1 e6 14.Qc2 c6 15.0-0 Nc8 16.Qe2 White prepares the advance e5 (16.e5 Nd5+=) 16...Nd7 (16...Nb6 17.h3=) 17.h4 h6 (17...Ncb6 18.e5+=) 18.Rfe1 (18.h5 Ne7+/–) 18...Ncb6+= 19.e5 d5 20.Bc1 Nc4 21.Bc2 Qe7 (21...h5 22.Ng5 Ra8 23.Nb1=) 22.Qd3 Ra8 (better is 22...Rfd8!?+=) 23.h5+- Qe8 24.Nb1 (24.Ne2 f5 25.ef6 Nf6 26.hg6 Ne4+-) 24...Ndb6 (24...Rb8 25.Re2 f5 26.ef6 Nf6 27.hg6+-) 25.Nh4 Nc8?? (25...Na4 26.hg6 fg6 27.Qg6 Qg6 28.Ng6 Rf7+-) 26.hg6+- fg6 (26...f6 27.ef6 Rf6 28.Nd2+-) 27.Ng6 Rf7 (27...Rf5 28.Qg3+-) 28.Nf4 Rf4 (28...Kf8 29.Qh3 Rf4 30.Bf4+-) 29.Bf4 (29.Qh7 Kf8 30.Bf4 Qf7 31.Bh6 Ne7+-) 29...Qh5 (29...Ne7 30.Qh3 Qf7 31.Bh6+-) 30.Qh7 Kf7 31.Rd3 Qg6 (31...Qf5 32.Qg7! Kg7 33.Rg3 Kh7 34.Bf5 ef5+-) 32.Qg6 Kg6 33.Rf3 Kf7 34.Bh6 Kg8 (34...Ke8 35.Bg7 N8b6 36.g4+-) 35.Rg3 (35.Rg3 Kh8 36.Bg7 Kg8 37.Bh6 Kf7 38.Rg7 Ke8 39.Rb7+-) 1–0. Dzera,Evgeniy (2205) – Reva_Nikitina Zoya N (1835), 2010.

4.cb5 ab5 5.e3 e6 6.a3=.

4.e3 bc4 5.Bc4 d5 6.Be2 Bb7 7.Nf3 g6 (7...e6 8.0-0=) 8.a4 Bg7 9.b5 (9.0-0 Qd6+=) 9...ab5 10.ab5 Ra1 11.Ba1 c6 12.Qb3 0-0 13.0-0 Re8 (13...c5 14.d3=) 14.Nc3 (14.Rc1 c5+=) 14...cb5 (14...c5 15.Qc2=) 15.Bb5 Ba6 (15...Bc6!?=) 16.Be8+/– Bf1 17.Bf7! (17.Kf1?! Ne8 18.d3 e6=) 17...Kf7 18.Kf1 e6? (18...Kg8 19.Kg1+/–) 19.Ne5 (better is 19.Ng5 Kg8 20.Qb7+-) 19...Kg8+/– 20.Qb7 Nfd7 21.Nc6 Nc6 22.Qc6 Kf7 23.Bb2 Ke7? (better is 23...Ne5 24.Qb7 Qd7 25.Qd7 Nd7+/–) 24.Ba3 (24.Nd5!? Kf7 25.Bg7 ed5+-) 24...Kf7 25.Nb5 (25.Nd5 Ne5 26.Qb7 Qd7 27.Qd7 Nd7+-) 25...Be5 (25...Nf6 26.d4+/–) 26.d4 Bh2 (better is 26...Bb8+-) 27.Nd6?? (27.g3 Nf6+-) 27...Kg7?? (27...Bd6 28.Bd6 Nf6 29.Ke2+=) 28.Nb5 Kf6?? (better is 28...Kf7=) 29.e4 (29.g3!? Nb8 30.Qb7 Nd7+-) 29...de4 30.Qe4 (30.g3!? h5+-) 30...Bc7+/– 31.Qh4 (better is 31.Qf3 Kg7 32.Qc6+/–) 31...Kf7?? (better is 31...Kg7 32.Qh3 Qb8 33.Nc7 Qb1 34.Ke2 Qc2 35.Ke1 Qc7 36.Qe6 Qc3 37.Ke2 Qd4 38.Qe7 Kg8 39.Qe8 Kg7=) 32.Qh7+- Kf6 (32...Kf6 33.g4 Bf4+-) 0–1. GuestXZJW – GuestPPWT, freechess.org, 2017.

4.a3 d6 5.e3 Bg4 6.Qb3 (6.Be2 Be2 7.Ne2 d5 8.Bf6 ef6=) 6...e5 7.h3 (7.Be2 Bf5=) 7...Be6 8.Nf3 g6 (8...Be7 9.d4 ed4 10.Nd4 Nd4 11.Bd4=) 9.d4= ed4 10.ed4 d5 11.c5 Bg7 12.Bd3 0-0 13.0-0 Ne4 14.Re1 Qd7 15.Nbd2 (better 15.Ne5!? Ne5 16.de5=) 15...Nd2-/+ 16.Nd2 Nd4 17.Qd1 Nc6 (17...Ne2! 18.Re2 Bb2-/+) 18.Bg7=+ Kg7 19.Qc2 Kg8 20.Re3 Rae8 21.Rae1 Nd4 (21...Re7 22.Nf3=+) 22.Qb2= Nf5 23.R3e2 Nh4 24.Qf6 Qe7 25.Qe7 Re7 26.f4 Rd7 27.g4 d4 (27...h5!? 28.gh5 A) 28...gh5? 29.Re5+-; B) worse 28...Bh3 29.Rh2 Bf5 30.Bf1+- (30.Rh4?! Bd3 31.Nb3 Be4=+); C) 28...Bf5 29.Bf5 Nf5=) 28.Kf2+/- Bd5 29.Kg3 Ng2 30.Rg2 Bg2 31.Kg2 f5 (31...Kg7 32.c6! bc6 33.Nb3+-) 32.gf5+- gf5 33.Nf3 h6 (33...h5 34.Nh4+-) 34.Ne5 (34.Nh4 Rf6+-) 34...Rg7 35.Kf3 c6 (35...Re7 36.Bc4 Kh7 37.Rd1+-) 36.h4 Ra8 (36...Re7 37.Rd1+-) 37.h5 (37.Bf5 Re8+-) 37...a5 (37...Rf8 38.Nc4 Rf6 39.Nd6+-) 38.b5 (38.Bf5!? ab4 39.ab4 Ra4+-) 38...cb5 39.Bb5 Rc7 40.Rg1 Kf8 (40...Kh7 41.Bd3 Rf8 42.Rg6+-) 41.Rg6 (41.Nd7 Kf7 42.Bc4 Ke7 43.Rg7 Kd8+-) 41...d3? (41...Rac8+-) 42.Bd3 Rd8 43.Bf5 Rc5 44.Nd7 (44.Rf6!? Ke8+-) 44...Rd7 45.Bd7 Rh5 46.Bg4 Rh1 47.Rb6 h5 (47...Ra1 48.Rb7 (48.Rh6?! Ra3 49.Ke4 b5+-) 48...Ra3 49.Ke4+-) 48.Bc8 (better 48.Be6+-) 48...Rh3?? (48...Ra1 49.Rb7 Ra3 50.Ke4+-) 49.Ke4 (49.Bh3 Kg7 50.Rb7 Kf6 51.Rb5+-) 49...Ra3 50.Bb7 (50.Rb7 Ra4 51.Ke5 Rb4+-) 50...h4 51.f5 a4 (51...Ra1 52.Ke5 Re1 53.Kf6+-) 52.Ke5 (better 52.Bd5 Ra1 53.Ke5 Ke8+-) 52...h3 (52...Rb3 53.Rf6 Kg7 54.Rg6 Kf8+-) 53.Bd5 Re3 54.Kf6 Ke8 (54...Re8 55.Rb7 Rc8+-) 55.Ra6 (55.Rd6 Kf8 56.Be6 Re6 57.fe6 Kg8 58.e7 Kh7 59.Rd3 h2 60.Rh3 Kg8 61.e8Q) 55...a3 (55...Kd7 56.Be6 Kc7 57.Ra4 Kd6+-) 56.Be6 (56.Rd6 Kf8 57.Be6 Re6 58.fe6 Kg8 59.e7 Kh7 60.Rd3 h2 61.Rh3 Kg8 62.e8Q) 56...h2 (56...Rd3 57.Ra8 Rd8 58.Ra3 Rd7+-) 57.Ra8 1-0. jhonores (2280) - Klamnik1 (2260), Rated Blitz game, lichess.org, 2020.

4.a3 e5 5.b5 ab5 6.cb5 Nd4 (6...Na7!?=) 7.e3+= Ne6 8.Be5 Be7 9.Nf3 0-0 10.Be2 d6 11.Bb2 c6 12.bc6 bc6 Opening the b–file gets White a lot of play 13.0-0 Qb6 14.Qc2 c5 15.Nc3 Bb7 16.a4 Nd5 (16...Rfb8 17.Rfb1+-) 17.Rfb1 (17.Nd5 Bd5 18.Bd3 Rfb8+-) 17...Nc3 (17...Nb4 18.Qb3+-) 18.Bc3+- Qc7 19.a5 Ba6 Black prepares c4 20.Ba6 Ra6 21.Rb2 d5 22.Rab1 c4 23.Rb7 Qd8 24.R7b6 Rb6 25.ab6 Qb8 (25...Qd7 26.d3 cd3 27.Qd3+-) 26.Ne5 (26.b7!? Qc7 27.Qf5 Rb8 28.Qd5 Nd8+-) 26...Nc5 27.Nc6 Qc7?? (better 27...Qb7 28.Ne7 Qe7+-) 1–0. retiponziani (1780) – navajobob (1710), ChessWorld.net, 2012.

4.b5 ab5 5.cb5 Na5 6.e3 d5 7.Nf3 Nc4 8.Bc3 e6 9.a4 Ne4 10.Bd4 c5 11.Be5 f6 12.Bg3 Nb2 13.Qb3 Nc4 14.d3 Na5 15.Qc2 Ng3 16.fg3 c4 17.dc4 Nc4 18.Bc4 dc4 19.0-0 Bc5 20.Qc4 Be3 21.Kh1 0-0 22.Nc3 Kh8 23.Nd1 Bb6 24.Re1 e5 25.Nc3 Bf2 26.Rf1 Be3 27.Ne4 b6 28.Rfd1 Qe7 29.Qc3 Bh6 30.Rd6 Bf5 31.Qc6 Rac8 32.Qb6 Be4 33.Rad1 Bf3 34.gf3 e4 35.fe4 Qe4 36.Kg1 Be3 37.Kf1 Bb6 0–1. axtur777 – MrSufi, lichess.org, 2020.

4.a4 c5 5.b5 e5 6.e3 a5 7.d4 Be7 8.de5 de5 9.Qd8 Bd8 10.Be5 0-0 11.Nf3 Nbd7 12.Be2 Re8 13.Bb2 Ne4 14.0-0 Bf6 15.Bf6 Ndf6 16.Nbd2 Nd2 17.Nd2 b6 18.Rfd1 h6 19.Bf3 Rb8 20.Bc6 Bd7 21.Bd7 Nd7 22.Nf3 Nf6 23.Rd3 Ne4 24.Rad1 Nf6 25.Nh4?? Ne4?? 26.Nf5 Kh7 27.Nd6 Nd6 28.Rd6 f6 29.h3 Re7 30.Rc6 Re4 31.Rc1 Ree8 32.Kf1 Kg6 33.Ke2 Kh7 34.g3 Kg6 35.f4 Kh7 36.Kf3 f5 37.Rd1 Re7 38.Rdd6 Rbe8 39.Rd3 Kg8? 40.Rb6 Ra7 41.Rc6 Raa8 42.Rc5 Reb8 43.Rf5 Rc8 44.c5 Rc7 45.c6 Rac8 46.Rfd5 Rf7 47.Rd7 Rff8 48.c7 Kh7 49.b6 Ra8 50.b7 Rae8 51.Rd8 Rd8 52.Rd8 Rd8 53.cd8Q (53.cd8Q h5 54.Qd3 g6 55.Qd7 Kh6 56.b8Q h4 57.Qh8#) 1–0. retiponziani – stefanW, ChessWorld.net, 2012.

4.Qb3 Be6 5.d4 c6 6.Nd2 Nbd7 7.e4 b5 8.d5 cd5 9.ed5 Bf5 10.Qf3 Bg6 11.Nh3 h6 12.Nf4 Bh7 13.Bd3 g6 14.0-0 bc4 15.Bc4 Nb6 16.Rac1 Bg7 17.Bb3 0-0 18.Bf6 Bf6 19.Ne4 Bg7 20.Rfd1 Nd7 21.Nd3 Rb8 22.a3 a5 23.h3 ab4 24.Nb4 Qb6 25.Rc6 Qb5 26.Nc3 Qa5 27.Ra6 Qd8 28.Nc6 Qc8 29.Nb8 Qb8 30.Rb1 Qc7 31.Nb5 Qb7 32.Rc6 Ne5 33.Qe2 Nc6 34.dc6 Qc6 35.a4 g5 36.Qe7 Bb1 37.Qd6 Qc1 38.Kh2 Qe1 39.f3 Be5 0–1. fracton (1680) – mark19116 (1745), lichess.org, 2016.

4.Nf3 e5 5.Nc3 Bg4 6.d4 ed4 7.Nd4 Nbd7 8.f3 Bh5 9.e4 Be7 10.Bd3 0-0 11.0-0 Ne5 12.Be2 Nfd7 (12...a5 13.b5+/–) 13.Nd5 (13.g4 Bg6 14.f4 Nf6+-) 13...Bf6 14.Qc2 (14.g4 Bg6 15.f4 Be4 16.Nf6 Qf6 17.fe5 Qe5+/–) 14...Nc6 15.Nf6 Nf6 16.Nc6 bc6 17.Rad1 Qe7 18.Qd2 Rad8 19.Qg5 Bg6 20.c5 Qe6 21.a3 (21.Ba6 Qa2 22.cd6 Qa6 (22...Qb2 23.dc7 Ra8 24.Qc5+-) 23.dc7 Rd1 24.Rd1 Ne8=) 21...d5 22.Ba6 Nd7? (22...de4 23.Rd8 Rd8 24.fe4 Ra8+/–) 23.ed5 cd5 24.Bb7 c6 (24...Rfe8 25.Bd5 Qf5 26.Qf5 Bf5+-) 25.Rfe1 Qf6 (25...Qf5 26.Qf5 Bf5 27.Bc6 Nb8+-) 1–0. MT – guest3037, ICC, 2004.

4.a3 b5 5.e3 bc4 6.Bc4 Nc6 7.Nf3 d5 8.Bb3 Bd7 9.Nc3 Ne7 10.0-0 Ng6 11.Ne2 c5 12.bc5 Bc5 13.d4 Be7 14.Ng3 0-0 15.Re1 Qa5 16.Qd2 Qb5 17.Bc2 0–1. Trkn – Caissa, itsyourturn.com, 2000.

4.a3 c5 5.bc5 Bc5 6.d4 (6.e3 d5 7.Bf6 Qf6 8.d4 dc4 9.Nd2 Be7) 6...Be7 7.Nf3 d5 8.e3 0-0 (8...dc4 9.Bc4 b5) 9.Be2 (9.cd5 ed5 10.Bd3 Nc6=) 9...dc4 10.Bc4 b5 11.Be2 Bb7 12.Nbd2 Nbd7 13.0-0 Ne4 (13...Nb6 14.Bd3=+) 14.Ne4= Be4 15.Bd3 (15.a4 b4=) 15...Bg6 (15...Bd3 16.Qd3 Nb6 17.Rfb1=) 16.Qb3 (16.Bg6 fg6 17.Qb3 Qb6+=) 16...Nb6 (16...Bd3 17.Qd3 Nb6 18.Rfc1=+) 17.e4 (17.Bg6 hg6 18.e4 Qd6=) 17...Nc4 18.Rfe1 Nb2 19.Qb2 f6 20.Rac1 Rc8 21.Rc2 Rc2 22.Bc2 Qa5 23.Re3 Rc8=+ 24.h3 Bf7 25.Bb3 Ba3–/+ 26.Qa2 Rc1–+ 27.Kh2 Bd6 28.e5 Qa2 29.Ba2 fe5 30.de5–/+ Bb8 31.Nd4 Kf8 32.Ne6? Be6?? 33.Be6=+ b4 34.Rf3? Ke7–+ (34...Ke7 35.Bb3 Be5 36.g3 Rc3 37.Rc3 bc3–+) 0–1. Gross,Wilhelm – Merten,Rainer, xiv/07, 1986.

4.c4 bc4 5.Bc4 e6 6.a3=.

4.c4 c6 5.Bf6 ef6 6.a3 Bb7 7.Nf3 d5 8.c5 a5 9.Nc3 Nd7 (9...Bc8!?=) 10.d4+- g6 11.Bd3 Bg7 12.0-0 f5 13.g3 Nf6 14.Nh4 (14.Na2 ab4 15.Nb4 Ne4+=) 14…Ne4 ½–½. Janouchova,Marcela – Mejzlik,Jiri, Ricany op–B, 2007.

4.c4 e6 5.c5 (5.cb5 Bb4 6.Qf3 c6=) 5...d6 (5...Nc6 6.Qb3=) 6.Qf3 Ra7 7.d4 (7.Bf6 gf6 8.d4 Bb7=) 7...Bb7+= 8.Qd1 (8.Qg3 Ne4 9.Qf4 e5+=) 8...Be7= 9.Nf3 (9.a4 dc5 10.bc5 b4+=) 9...0-0 10.Be2 dc5 (10...Nc6 11.a3+=) 11.dc5 (11.bc5 Nc6=) 11...Qd1+= 12.Bd1 Ne4 (12...Nc6 13.a3+=) 13.Nbd2 (13.Nd4!?=) 13...Nd2–/+ 14.Nd2 f6 (14...a5 15.a3+=) 15.0-0 (15.Bg4 f5 16.Bf3 Nc6=) 15...Bd5 (15...a5!? 16.ba5 Bc5=) 16.e4+= Ba8 (16...Bc6 17.Bb3 Kf7 18.Rfd1+=) 17.a4 (17.Bb3 Kf7+=) 17...ba4 18.Ba4 c6 (18...Nc6!? 19.Bc3 Kf7+=) 19.Bb3 (19.Nc4 Rb7 20.Bc3 Rd7+/–) 19...Kf7 20.f4 (better is 20.Nc4+/–) 20...g6? (better is 20...Rd8!? 21.Bc3 a5+/–) 21.f5+- gf5 (21...Rb7 22.Be6 Kg7 23.Bc3+-) 22.ef5 Re8 (22...Rb7 23.fe6 Ke8 24.Ra4+-) 23.Be6 (23.Ne4!? Rf8+-) 23...Kg7 24.Rf3 Nd7 (24...Rb7 25.Rg3 Kh8 26.Bc3+-) 25.Rg3 Kh8 26.Ne4 Ne5 (26...Rf8 27.Bc1 h5 28.Rg6+-) 27.Nd6 (better is 27.Be5 fe5 28.f6 Bf6 29.Nf6+-) 27...Rb8 (27...Rf8+-) 28.Be5 fe5 (28...Rf8 29.Bf4 Bd6 30.cd6 h5+-) 29.Nf7 1–0. GuestGXMT – siml, freechess.org, 2016.

4.Nf3 d6 5.Be2 g6 (5...e5!?=) 6.0-0 Bg7 7.c4 0-0 (7...bc4 8.Bc4 d5 9.Be2+=) 8.Nc3 (8.cb5 ab5 9.Bb5 c6+-) 8...Bd7 (8...a5 9.ba5 bc4 10.Bc4=) 9.Qc2 (9.cb5 ab5 10.Nb5 c6+-) 9...h6 (9...Nc6 10.a3 bc4 11.Bc4+=) 10.d3 (10.cb5!? ab5 11.Bb5 Bb5 12.Nb5+-) 10...Nc6 11.a3 Re8 (11...bc4 12.dc4 Bf5 13.Bd3+=) 12.Nd5 (12.cb5 ab5 13.Nb5 Nb4 14.Qc7+-) 12...Bf5? (better 12...e5+=) 13.Nf6+- ef6 14.e4 (14.cb5 Ne5 15.ba6 Ra6+-) 14...Bg4? (14...Bd7+=) 15.Nd4?? (better 15.cb5 Bf3 16.bc6 Be2 17.Qe2+-) 15...Nd4+= 16.Bd4 Be2 17.Qe2 c6 18.c5 (18.Qc2 d5 19.Rfd1 Qd7+=) 18...f5 (18...dc5 19.Bc5 f5 20.Rae1=) 19.Bg7+= Kg7 20.Rac1 d5 21.Qb2 Kh7 22.ef5 gf5 23.Rce1 Re1 24.Re1 Qg5 25.Qc1 (25.Qe5 Rg8 26.g3 f4+-) 25...Qg6 (25...Qc1!? 26.Rc1 a5=) 26.Re7 (26.Qd2 Qf6+-) 26...Rg8 27.g3 Ra8 28.Qf4 Kg7 29.Qe5 Kg8 30.Re8 Re8 31.Qe8 Kg7 32.Qe5 ½–½. valpa – FlyCatcher, playchess.de, 2003.

4.a3 b5 5.Nf3 d5 6.d3 e5 7.Ne5 Ne5 8.Be5 Bd6 9.Bd6 Qd6 10.Nd2 0-0 11.h3 d4 12.ed4 Re8 13.Be2 Qd4 14.0-0 Qe5 15.Bf3 Rb8 16.Ne4 Bf5 17.Nf6 Qf6 18.Rb1 Qg6 19.Kh2 Qd6 20.g3 Rbd8 21.Re1 Re1 22.Qe1 h6 23.Qe3 Qd7 24.g4 Qd6 25.Kg2 Be6 26.Re1 Bd5 27.Bd5 Qd5 28.Qf3 Qd6 29.Re4 c5 30.bc5 Qc5 31.Qe3 Qc2 32.Re8 Re8 33.Qe8 Kh7 34.Qf7 Qd3 35.Qa2 Qe4 36.Kf1 a5 37.Qb2 b4 38.ab4 ab4 39.Kg1 Qe1 40.Kg2 Qc3 41.Qb1 g6 42.f4 b3 43.f5 Qc2 44.Qc2 bc2 45.fg6 Kg6 46.Kg3 c1Q 47.h4 Qc3 48.Kf4 Qd4 49.Kg3 Qe5 50.Kh3 Qe3 51.Kg2 h5 52.gh5 Kh5 53.Kf1 Kh4 54.Kg2 Kg4 55.Kf1 Kf4 56.Kg2 Qd2 57.Kh3 Qe3 58.Kg2 Qf3 59.Kg1 Ke3 60.Kh2 Qf4 61.Kg1 Qf3 62.Kh2 Kf2 ½–½. Phomopsis – Temo1981, lichess.org, 2018.

4.a3 d5 5.Nf3 Bg4 6.Be2 e6 7.0-0 Bd6 8.d3 Qe7 9.Nbd2 h5 (9...e5 10.c4 dc4 11.dc4=) 10.c4+= Qd7 11.h3 Bf5 12.Qb3 Rg8 13.Rad1 g5?? (better is 13...Bg6+/–) 14.Bf6+- g4 15.hg4 hg4 16.Nd4 Rg6 (16...Nd4 17.Bd4 (17.ed4?! Rg6 18.Be5 Rh6+-) 17...0-0-0 18.Bf6+-) 17.Nf5 Rf6 18.Nd6 Qd6 19.cd5 ed5 20.Bg4 Rh6 21.f4 Qg6 (21...Ne7 22.Nf3+-) 22.Bf3 Ne7 23.Bd5 Rd8 (23...c6 24.Bf3+-) 24.Be4 (24.f5 Qh5 25.Bb7 Nf5+-) 24...Qg3 (24...f5 25.Bf3+-) 25.Rf3 Qh2 26.Kf2 f5 (26...c6 27.Rg3 Qh4 28.Nf3+-) 27.Bb7 Qh4 (27...Rb8 28.Qa4 Kd8 29.Rg3+-) 28.Ke2 Qg4 29.Rg1 (29.Qa4 Rd7 30.Rg1 Rhd6+-) 29...Rh2 (29...Rb6 30.Qa4 c6 31.Ba6+-) 30.Kf2 Qh4 (30...Rh6 31.Qa4 c6 32.Qa6 Qh4 33.Ke2+-) 31.Rg3 Rd6 (31...Qf6+-) 32.Nf3 Qh7 33.Nh2 Qh2 34.Rh3 (34.Rh3 Rh6 35.Rh2 Rh2 36.Qe6+-) 1–0. Janek – Freeday, internet, 2018.

4.a3 d5 5.Nf3 Bg4 6.Be2 e6 7.h3 Bh5 8.0-0 Be7 9.c4 (9.d3 0-0=) 9...0-0 10.d4 dc4 11.Bc4 Nd5 12.Nbd2 Bg6 13.Qb3 Nb6 14.Bd3 Bd3 15.Qd3 Nd5 16.Nc4 Na7 (16...Rc8 17.Rac1+=) 17.Nce5 Nb5 18.Rac1 c6 19.Rc2 (19.e4 Nf6+=) 19...Rc8 (19...a5 20.e4 Nf6 21.ba5 Qa5 22.Ra1=) 20.Rfc1 Qd6 (20...Nd6 21.Nd2=) 21.g3 (21.e4 Nb6+=) 21...Rfd8 22.Kg2 h6 23.Qb3 Qb8 24.a4 Nd6 25.Ba3 Ne4 26.Nc4 h5 27.b5 Ba3 (27...ab5 28.ab5 cb5 29.Nb6 Rc2 30.Rc2 Ba3 31.Nd5=) 28.Na3+= g5 (28...cb5 29.ab5 Rc2 30.Rc2=) 29.bc6 h4? (29...Rc6 30.Rc6 bc6 31.Qb8 Rb8 32.Rc6+=) 30.g4 (30.gh4 gh4 31.cb7 Rc2 32.Nc2 Nd6+-) 30...Nf2? (better 30...Rc6 31.Rc6 bc6 32.Qb8 Rb8 33.Rc6 Rb2+=) 31.Kf2?? (better 31.c7 Rc7 32.Rc7 (32.Kf2? Rc2 33.Rc2 Qg3 34.Ke2 Qg2 35.Ke1 Qf3-+) 32...Nc7 33.Kf2+-) 31...Qg3=+ 32.Ke2 Qg2 (32...Qg2 33.Ke1 Qf3 34.cb7 Rb8=+) 0-1. Mely (1950) - MarkusE (2200), ChessWorld.net, 2018.

4.a3 d5 5.Nf3 h6 6.Be2 e6 7.c4 dc4 8.Bc4 Bd6 9.0-0 Bd7 10.Nc3 0-0 11.d4 Ne7? (better is 11...Re8+=) 12.e4+- b5 13.Bb3 Ne4 (13...Bc6 14.e5 Nf5 15.d5 Nd5 16.Nd5 Bd5 17.Bd5 ed5 18.ed6 Qd6 19.Qc2+-) 14.Ne4 Bc6 15.Nd6 Qd6 16.Ne5 Bb7 17.Qg4 Nf5 (17...a5 18.ba5 Bd5 19.Bd5 Nd5 20.Bc1+-) 18.Rfd1 a5 (18...Bd5 19.Bd5 Qd5 20.Rac1+-) 19.ba5 (19.d5 ed5 20.Qf5 ab4 21.ab4 Rad8+-) 19...Ra5 (19...Bd5 20.Bd5 Qd5 21.Rac1+-) 20.Bc3 (better is 20.d5 Bd5 21.Bd5 ed5 22.Qf5+-) 20...Ra3 21.Ra3 (21.Nf7!? Rf7 22.Ra3 Qa3 23.Be6 Nd6+-) 21...Qa3+/– 22.Rb1 Rd8?? (better is 22...Bd5 23.Qd1 Rd8+/–) 23.Nf7!+- Kf7 24.Qf5 Kg8 25.Qe6 (worse is 25.Qb5 Bd5+-) 25...Kh8 26.d5 Bd5 (26...Qd6 27.Qf7 Qf8 28.Qc7 Rc8 29.Qb7 Rc3 30.Qb5 Kh7+-) 27.Qh6 Kg8 28.Qg7 1–0. GuestHSHW – GuestCBMT, freechess.org, 2017.

4.a3 e5 5.b5 Na5 (5...ab5 6.Bb5 Qe7 7.Nf3+=) 6.c4 (6.Be5!? Be7 7.ba6 ba6 8.Nf3+/–) 6...d5 (6...ab5 7.cb5 d6 8.d4=) 7.d3 (7.cd5 Qd5 8.ba6 ba6=) 7...dc4 (better is 7...ab5 8.cb5 Bd6+=) 8.dc4 (8.ba6 Ra6 9.Be5+=) 8...Be6?? (better is 8...Qd1!? 9.Kd1 ab5 10.cb5 Ne4–+) 9.Nd2 (9.Qd8 Rd8 10.Be5 A) worse is 10...Bc4 11.Bc7 Bf1 A1) 12.Ba5?? Bg2 13.Bd8 Kd8–+ (13...Bh1?! 14.ba6 ba6 15.Bf6 gf6 16.Nd2=); A2) 12.Bd8?! Bg2 13.Ba5 Bh1+=; A3) 12.Kf1 Rd1 13.Ke2+/–; B) 10...Nc4 11.Bc4 Bc4 12.ba6 Ba6 13.Bc7 Rc8=) 9...ab5 10.cb5 Bd6 11.Qc2 0-0 (11...Nd7 12.Ngf3=) 12.Be2 (12.Ngf3 Nd7=) 12...Qd7 (12...Qe8 13.Ngf3 Bd7 14.Rb1=) 13.Ngf3 e4 (13...Bf5!? 14.e4 Bg4+=) 14.Ne4+/– Ne4 15.Qe4 Bf5 (15...Qe7 16.Nd2+=) 16.Qd4+/– c5?? (better is 16...f6+/–) 17.Qg7 1–0. Goldmund,Heike – Gonet,Gerard, FICGS, 2017.

4.a3 e6 5.Nf3 d5 6.d4 Bd6 7.c4 dc4 8.Bc4 0-0 9.Nbd2 Bd7 10.0-0 b5 11.Bd3 Ne7 12.Ne4 Ne4 13.Be4 Nd5 14.Qc2 g6 15.Rac1 Rc8 16.g3 Nf6 17.Bd3 Nd5 18.e4 Ne7? (better is 18...Nb6+/–) 19.e5+- Bb4 (19...Nd5 20.ed6 cd6 21.Qe2+-) 20.ab4 c5 21.dc5 Bc6 22.Be4 Nd5 23.Rfd1 Qe7 24.Bd5 ed5 25.Nd4 Qg5 26.f4 Qh5 27.Nc6 Rc6 28.Qc3 Rd8 29.e6! d4 30.Rd4 Rd4 31.Qd4 Qh2 32.Kh2 (32.Kh2 f6 33.Qf6 Rc5 34.Qd8) 1–0. Fournier,Frederic (1950) – luistulio (1730), Active, 2009.

4.b5 ab5 5.Bb5 e6 6.Nf3 Be7 7.0-0 0-0 8.d4 Nd5 9.c4 Nb6 10.Nc3 d5 11.cd5 Nd5 12.Nd5 Qd5 13.Be2 Bd7 14.Qc2 Rfc8 15.a3 Bd6 16.e4 Qh5 17.Ne5 Qh6 18.Ng4 Qg6 19.f4 h5 20.f5 ef5 21.ef5 Qg5 22.Ne5 Ne5 23.de5 Bc5 24.Qc5 Bc6 25.Bf3 Bf3 26.Rf3 h4 27.Raf1 Qd2 28.Bc1 Qd7 29.e6 fe6 30.fe6 Qe6 31.Re3 Qb6 32.Qc4 Kh7 33.Qh4 Qh6 34.Qh6 Kh6 35.Rg3 Kh5 36.Rg7 Rg8 37.Rf5 Kh4 38.g3 Kh3 39.Rh5 1–0. Chess4Win (1740) – CasvandeCamp (1745), lichess.org, 2020.

5.d3 d5 6.Nf3 e4 7.de4 Ne4 8.Bd3 Nb4 9.ab4 Bb4 10.c3 Be7 11.Be4 de4 12.Qd8 Bd8 13.Nd4 0-0 14.0-0 c5 15.Ne2 f5 16.Nd2 g5 17.Nc4 Bc7 18.Ba3 b6 19.Rab1 Rb8 20.Rb2 Rf6 21.Rd1 Rh6 22.g3 b5 23.Bc5 bc4 24.Rb8 Bb8 25.Rb1 Bc7 26.Nd4 f4 27.ef4 gf4 28.Ne2 fg3 29.fg3 Rc6 30.Bd4 Bg4 31.Re1 Bf3 32.Kf2 Bb6 33.Bb6 Rb6 34.Nd4 Rb2 35.Ke3 Rh2 36.Kf4 Rf2 37.Ke3 Rg2 38.Nf3 Rg3 39.Ke4 h5 40.Ne5 Rc3 41.Rh1 Rc2 42.Rh5 c3 43.Kd3 Rc1 44.Rg5 Kh7 45.Rg2 a5 46.Rc2 Rc2 47.Kc2 a4 48.Nc4 a3 49.Na3 Kg6 50.Nc4 Kf5 51.Ne3 Ke5 52.Nd1 Ke4 53.Nf2 Kd4 54.Ng4 Ke4 55.Nf6 Kd4 56.Ng4 Ke4 57.Nf2 Kd4 58.Nd3 Ke4 59.Nb4 Kd4 60.Nc6 Ke4 61.Ne7 Kd4 62.Nc8 Ke4 63.Na7 Kd4 64.Nb5 Ke4 65.Nd6 Kd4 66.Nf7 Kd5 67.Nh8 Ke4 68.Ng6 Kd4 69.Nh4 Ke4 70.Ng2 Kd4 71.Ne1 Ke4 72.Nd3 Kd4 73.Nb4 Ke4 74.Kc3 ½–½. Phomopsis (1680) – Azert1 (1660), lichess.org, 2020.

5.d4 ed4 6.ed4 d6 7.d5 Ne5 8.Nf3 Qe7 9.Ne5 Nd7 10.f4 f6 11.Be2 de5 12.fe5 Ne5 13.0-0 Qd6 14.c4 b6 15.Nc3 Be7 16.Ne4 Qd7 17.Bg4?? (better is 17.Be5 fe5 18.h3+/–) 17...Qg4–+ 18.Be5 fe5 (18...Qe4 19.Bc7 Qc4 20.d6=) 19.Qg4 Bg4 20.h3 Bh5 (20...Be2 21.Rf5 Bc4 22.Re5–+) 21.Rfe1? 0-0 22.Ng3 Bg6 23.Re5 Bd6 24.Re3 a5 25.b5 Bc5 26.Nf1 Rae8 27.Rae1 Bd3 28.Kh2 Re3 29.Ne3 Re8 30.Nc2 Bd6 31.g3 Re1 32.Ne1 Bc4 33.Kg2 Ba3 34.Nc2 Bc5 35.Kf3 Bd5 36.Kf4 Bd6 37.Kf5 Kf7 38.g4 h6 39.Nd4 g6 0–1. mihai740609 – javico, kurnik, 2011.

5.Nf3 d6 6.c4 Bg4 7.Be2 Be7 8.h3 Bf5 9.d3 e4 10.de4 Be4 11.Nc3 Bg6 12.0-0 0-0 13.Rc1 Ne4 14.Ne4 Be4 15.Bd3 Bd3 16.Qd3 Bf6 17.Bf6 Qf6 18.Rfd1 Ne5 19.Ne5 Qe5 20.Qd5 Qd5 21.Rd5 Rac8 22.Rcd1 g6 23.c5 dc5 24.Rc5 c6 25.Rc3 (25.Rd7 Rb8+=) 25...Rfd8= 26.Rcd3 Rd3 27.Rd3 Rc7 28.f3 Kf8 29.e4 Ke7 30.Kf2 Rd7 31.Ke3 Rd3 32.Kd3 Kd6 33.Kd4 b6 34.e5 Ke6 35.f4 h6 (35...Kf5!? 36.Ke3 g5+=) 36.g4= f6 37.ef6 Kf6 38.h4 h5 39.gh5 gh5 40.Ke4 a5 41.f5?? (better is 41.ba5 ba5 42.a4=) 41...a4–+ 42.Kf4 c5 43.bc5 bc5 44.Ke4 c4 45.Kd4 Kf5 46.Kc4 Kg4 47.Kb4 Kh4 48.Ka4 Kg3 49.Kb5 h4 50.a4 h3 51.a5 h2 52.a6 h1Q 53.Kb6 Qa8 54.a7 Kf4 (54...Kf4 55.Kc5 Ke5 56.Kc4 Qa7 57.Kc3 Kd5 58.Kd2 Qd4 59.Ke2 Ke4 60.Ke1 Qe3 61.Kd1 Qc3 62.Ke2 Qc2 63.Ke1 Ke3 64.Kf1 Qf2) 0–1. Fournier,Frederic (1745) – Hudoj (1990), ChessOK.com, 2013.

5.Nf3 d6 6.d4 e4 7.Nfd2 d5 8.c4 Be6 9.Nc3 dc4 10.Nc4 Bc4 11.Bc4 Bd6 12.0-0 h5 13.Rc1 Ng4 14.h3 (14.Ne4? Bh2 15.Kh1 Qh4 16.Bf7 Kf7 17.Qf3 Nf6–+) 14...Qh4 15.Ne4 Bh2 16.Kh1 Nf2?? (16...f5 17.d5 Nce5 18.Qa4 Kf8+-) 17.Rf2 Bg3 (17...Qe4 18.Bf7 Kd8 19.Kh2 Qe3+-) 18.Rf4! Bf4 19.ef4 Qf4 20.Qf3 Qf3 21.gf3 0-0-0 22.Ng5 f6 23.Nf7 Rhf8 24.Nd8 Kd8 25.f4 g5 26.d5 Ne7 27.Rf1 g4 28.hg4 hg4 29.Kg2 f5 30.Be5 Ng6 31.Rh1 Re8 32.Rh6 Ne5+/– 33.fe5 Re5 34.Rh8 Kd7 35.Rh7 Kd8 36.Kg3 Re3= 37.Kf4 Rf3 38.Ke5+/– g3 39.Rg7 f4?? 40.Ke4 Rf1?? 41.Bf1+- 1–0. mihai740609 – naiki, kurnik, 2011.

5.Nf3 e4 6.Nd4 d5 7.Nc6 bc6 8.Be2 Bd6 9.d3 0-0 10.Nd2 Bf5 11.de4 Ne4 12.Ne4 Be4 (worse is 12...de4 13.h4 Qe7 14.Qd4+=) 13.Bd3 Qg5 (13...Bg2? 14.Qg4 g6 15.Qg2+-) 14.Be4 de4 15.g3 Rad8 16.Qe2 a5 17.c3 a4 18.0-0 h5 19.h4 Qg6 20.Kh2 Rfe8 21.c4 Be5 22.Be5 Re5 23.Rfd1 Rde8 24.c5 Rf5 25.Rd7 Qf6 26.Kg2?? Qa1–+ 0–1. ejdrzej (1725) – frinkfer (1855), kurnik, 2012.

5.Nf3 e4 6.Nd4 Nd4 7.Bd4 d5 8.c4 dc4 9.Bc4 b5 10.Bb3 Bg4 (10...Be7!?=) 11.Qc2+= Bd6? (11...Bf5 12.g4 Be6 13.Bf6 Qf6 14.Qc6 Ke7 15.Be6 fe6 16.Qc7 Ke8 17.Qc6 Kf7 18.Qa8 Qa1 19.Qe4+-) 12.h3?? (better is 12.Bf6!? gf6 13.Qe4 Be6 14.Be6 fe6 15.Qe6 Qe7+-) 12...Bh5? (12...Be6!?=) 13.Nc3 (13.Bf6 Qf6 14.Qc6 Ke7+/–) 13...Bg6 14.0-0 (14.Nd5 Nd7 15.Bg7 Rg8+-) 14...0-0+= 15.Nd5 Nd5 16.Bd5 Rb8 (16...Bh2! 17.Kh2 Qd5 18.Qc7 Rac8+=) 17.Be4+/– Be4 18.Qe4 f6 19.Rac1 Re8 20.Qg4 Kh8 21.Bb2 Qe7 22.d4 Qe4 23.Qe4+- Re4 24.Rfe1 Rbe8 25.Bc3 h5 26.Bd2 Kh7 27.f3 R4e7 28.e4 Kg6 29.Ra1 Bg3 30.Rec1 h4 31.a4 f5 32.e5 Kf7 33.ab5+- ab5 34.Ra6 Rb8?? 35.f4 Re6? 36.Rc7 Kg8 37.Re6 1–0. andil – sebator, kurnik, 2012.

5.Nf3 e4 6.Nd4 Be7 7.Nc6 dc6 8.d4 Bg4 9.Be2 Qd7 10.h3 Be6 11.c4 h6 12.0-0 Bh3 13.gh3 Qh3 14.f4 h5 (14...Qe3?! 15.Kg2 0-0-0 16.Qd2=) 15.Rf2 Ng4 (15...Qe3?! 16.Bc1 Qh3 17.Rh2=+) 16.Bg4?? (16.Qc1 Nf2 17.Bf1 Qg3 18.Bg2–+) 16...hg4 17.Re2 Qh1 18.Kf2 Qd1 (18...Qd1 19.Nc3 Qb3–+; 18...Bh4) 0–1. mihai740609 – javico, kurnik, 2011.

4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 d5 8.0-0 0-0 9.d4 Bd6 10.c4 dc4 11.Bc4 Qc7 12.Bd3 Rd8 13.h3 b6 14.Nbd2 Bb7 15.Ne4 Ne4 16.Be4 e5 (better is 16...Rac8!?=) 17.Rc1+/– ed4 18.Nd4 Be5 (better is 18...Bc5!? 19.Qc2 Nd4 20.Bh7 Kh8 21.ed4 Qc6+/–) 19.Qh5+- Bd4? (better is 19...g6 20.Qh6 Rd4 21.Bd4 Bd4 22.ed4 Qd6+-) 20.Qh7 (20.Bd4?! g6 21.Qh6 Rd4 22.ed4 Qd6+-) 20...Kf8 21.Bd4 f6 (21...Ke7+-) 22.Bf6! Qf7 1–0. ejdrzej (1740) – nortti (1715), kurnik, 2011.

4.a3 c6 5.Bd3 d5 6.Nf3 Nbd7 7.0-0 Bd6 8.Ng5 g6 (8...c5=+) 9.Qf3 (9.f4 0-0=) 9...0-0 (better is 9...h6!? 10.Qh3 Ke7 11.Ne6 fe6 12.Bg6 a5–/+) 10.Qh3= e5 11.f4 ef4 (11...Re8 12.Qh6=) 12.Qh6 (12.Ne6 fe6 13.Qe6 Rf7 14.Qd6 Ne8=) 12...Be5 (12...Ne5 13.Rf4 Re8 14.Be2=) 13.Be5 Ne5 14.Rf4 Neg4 (better is 14...Re8+=) 15.Rg4 (better is 15.Qh4!?+=) 15...Bg4=+ 16.Nc3 Qe7 (better is 16...Re8=+) 17.Rf1+/– Qe5?? (better is 17...Rfd8 18.Rf6! Qf6 19.Qh7 Kf8+/–) 18.Rf6!+- (18.Rf6 Qg5 19.Qg5+-) 1–0. Kunz,John T – Oliver, New York USA, 2008.

4.a3 d5 5.Be2=.

4.a3 d6 5.f4 Nc6 6.Nf3 b6 7.Be2 Bb7 8.0-0 Qb8 9.c4 Be7 10.Nc3 Qc8 11.d4 Qd7 12.d5 ed5 13.Nd5 Nd5 14.cd5 (14.Qd5?! 0-0+=) 14...Na7 15.e4 0-0-0? (better is 15...0-0!?+/–) 16.Rc1 Kb8 17.a4 h6 18.a5 b5 19.Qd2 Rhg8 20.Bd4 g5 21.f5 g4 22.Qe3 Nc8 23.Nh4?? Bh4–+ 0–1. elsh1403 – johnlennonn (1610), kurnik, 2011.

4.a3 h6 5.Nf3 Nc6 6.c4 Na7 7.d4 c6 8.Nc3 d5 9.Be2 dc4 10.Bc4 Bd7 11.0-0 Qe7 12.Qc2 Nd5 13.Ne4 0-0-0 14.Nc5 Be8 15.Rfc1 Kb8 16.Rab1 f6 17.e4 Nc7 18.a4 Rg8 19.Qb3 Ka8 20.Ne6 Ne6 21.Be6 Rh8 22.d5 cd5 23.ed5 Qb4 24.Qe3 Qd6 25.Nd2 Bg6 26.Nc4 Qe7 27.Bd4 Bb1 28.Ba7 Qb4 29.Nb6 Ka7 30.Nd7 Ka8–/+ 31.Nb6 Ka7?? 32.Nc8 Ka8 33.Qa7 1–0. elsh1403 – gpw21, kurnik, 2011.

4.c4 Bg7 5.Qb3 0-0 6.Nf3 d6 7.d4 Bd7 (7...a5 8.b5=) 8.Be2 b6 9.Nc3 c5 10.a3 a5 (10...cd4 11.ed4 Nh5 12.Bc1=) 11.0-0+= ab4 (11...cd4 12.ed4 Qc7 13.Rfc1+=) 12.ab4 Ra1 13.Ba1 Nc6 14.b5 (14.dc5 bc5 15.bc5 dc5+=) 14...Nb4 15.dc5 dc5 16.Bb2 (16.Rd1 Qc7+=) 16...Qc7 (16...Bf5!?=) 17.Ba3+/- Ne8 (17...e5!?+/-) 18.Bb4 cb4 19.Qb4 (better 19.Nd5 Qc5 20.Rd1+/-) 19...Nd6? (19...Bc3 20.Qc3 Bb5 21.Qd4+/-) 20.Rc1 (20.Nd5 Qd8 21.Rd1 Be6 22.Ne7 Qe7 23.Qd6 Qd6 24.Rd6 Rb8+-) 20...Bg4 (20...Bc3!? 21.Rc3 Ra8+/-) 21.Nd5+- Qb7 22.Rd1 Ne4? (22...Nf5+-) 23.Qe7 (23.c5 f5 24.c6 Qa7+-) 23...Qe7 24.Ne7 Kh8 25.Nd5 Rd8? (25...Nc3 26.Nc3 Bc3+-) 26.Nb6 Rd1 27.Bd1 Nc3 28.Nd7 (better 28.Bc2 Kg8+-) 28...Nd1?? (28...Bd7 29.Bc2+=) 29.Nc5 (better 29.b6 Bf8 30.Ng5+-) 29...Bf8 (29...Bf3 30.gf3 Nb2 31.b6 Nc4 32.b7+=) 30.Ne4 Bc8 (better 30...Bf3 31.gf3 f5+/-) 31.Nfd2?? (31.c5 Kg7 32.Ne5 Bf5+-) 31...Nb2 (31...f5 32.Ng5 Nb2 33.Kf1=+) 32.Kf1?? (32.c5!?+/-) 32...Na4 (better 32...f5!? 33.Ng5 Kg7=+) 33.Ke2+= Nb6 (33...Bb4 34.Kd3+=) 34.Kd3+/- Bb7 (34...f5 35.Nc3+/-) 35.c5 Nd5 (35...Nd7 36.Kc4 Ne5 37.Kd4+/-) 36.Kd4 (better 36.Kc4+-) 36...Nf6?? (36...Nc7 37.b6 Nb5 38.Kc4 Na3 39.Kb4 Nc2 40.Kc3+-) 37.Nd6 (better 37.Nf6 Bg2 38.Nde4 Be7+-) 37...Ne8?? (better 37...Bd6 38.cd6 Bg2+/-) 38.Ne8 (better 38.Nb7 Bg7 39.Kd5 Bc3+-) 38...Bc5 (38...Bg2 39.f3 Bh3 40.c6+-) 39.Kc5 Bc8 (39...Ba8 40.f3 g5 41.e4+-) 40.Kb6 (better 40.Nd6 Be6+-) 40...Bd7 41.Kc7 (better 41.Nd6 Kg7+-) 41…Kg8 (41...Kg8 42.Kd7 Kh8 43.b6 f6 44.b7 Kg8 45.Nf6 Kf7 46.Nde4 h5 47.b8Q Kg7 48.Qg8 Kh6 49.Qf8). ClayPigeons (2135) - Matvey200718 (2170), Rated Bullet game, lichess.org, 2020.

4.Nf3 d6 5.c4 Bg7 6.Nc3 0-0 7.Be2 h6 8.0-0 b6 9.Ne1 Bb7 10.Bf3 c6 11.a4 Nbd7 12.b5 Qc7 13.bc6 Bc6 14.Bc6 Qc6 15.d3 a5 16.Nb5 Ne5 17.Qe2 Nfd7? (17...Rad8 18.f4 Ned7 19.Nf3+=) 18.Rb1 (better is 18.f4!?+-) 18...Qc5 19.d4 (better is 19.f4!? Nc6 20.d4+-) 19...Qc4= 20.Qd1 Nc6 21.Rc1 Qd5 (better is 21...Qa2=) 22.Nc7+- Qa2 23.Na8 Qb2 24.Rc6 (24...Ra8 25.Nd3+-) 1–0. valpa – FlyCatcher, playchess.de, 2003.

4.Nf3 Bg7 5.c4 Nc6 6.Qb3 b5 7.cb5 ab5 8.Bb5 Bb7 9.0-0 e6 10.a4 d5 11.Bc6 Bc6 12.b5 Bb7 13.Nd4 0-0 14.Nc3 Ne4 15.Ne4 de4 16.Rfc1 Bd5 17.Qb4 Bd4 18.Qd4 f6 19.Rc5 e5 20.Qb4 Be6 21.Rac1 Ra7 22.Be5 fe5 23.Re5 Bf5 24.h3 h5 25.Rc6 Re8 26.Rec5 Bd7 27.Rg6 Kh7 28.Rgg5 h4 29.Rh5 Kg6 30.a5 Qf6 31.b6 cb6 32.ab6 Ra1 33.Kh2 Qd6 34.g3 hg3 35.fg3 Bh3 36.Rh3 Ra2 37.Rh4 Rd2 38.Kh3 Qe6 39.Rg4 Kf6 40.Qd2 Rh8 41.Kg2 Qg4 42.Qd6 Kf7 43.Rc7 Ke8 44.Qc6 Kd8 0–1. Abdullaevich (1800) – EdChav, lichess.org, 2019.

4.a3 d6 5.e3 e5 6.c4 Be7 7.b5 ab5 8.cb5 Na5 9.Be2 b6 10.0-0 0-0 11.h3 Bb7 12.d4 e4 13.Nfd2 Nd5 14.Ne4 f5 15.Nec3 Nf6 16.Nd2 Kh8 17.Nc4 Nc4 18.Bc4 d5 19.Be2 Ne4 20.Bf3 Bf6 21.a4 c6 22.Ba3 Re8 23.Qc2 Rc8 24.g3 g6 25.Bg2 Nd6 26.Ne2 Nc4 27.Nf4 Na3 28.Ra3 Kg7 29.Qa2 cb5 30.ab5 Rc4 31.Ra7 Qd7 32.Bd5 Rc7 33.Ne6 Re6 34.Be6 Qb5 35.Rb1 Qd3 36.Rb6 Qd1 37.Kh2 Qf3 38.Rbb7 Rb7 39.Rb7 Kh6 40.Rf7 Bd8 41.Bd5 Qd1 42.Bg2 Qe1 43.Qd5 Bb6 44.Qd7 Qf2 45.Rh7 Kg5 46.Qe7 1–0. jolubolu (1765) – mark19116 (1820), lichess.org, 2020.

4.a3 e6 5.d3 d5 6.Nbd2 b5 (6...Bd6 7.c4=) 7.g3 (7.e4 Be7=) 7...h6 (7...a5 8.a4 Bb4 9.ab5=) 8.Bg2 Bd6 (8...Be7 9.c4=) 9.0-0 e5 (9...Bb7 10.c4+=) 10.Nb3 (better is 10.c4+/–) 10...d4?? (better is 10...0-0!?=) 11.e3 (better is 11.Nfd4 Nd4 12.Nd4+-) 11...de3+/– 12.fe3 (12.Ne5 Ne5 13.Ba8 Bg4=) 12...Bg4+= 13.h3 Bh5 (better is 13...Bd7!?+=) 14.g4+/– Bg6 15.Ne5?? (better is 15.Nh4 Kd7 16.Ng6 fg6 17.Rc1+-) 15...Ne5–/+ 16.Ba8 Qa8 17.Qe2 0-0 18.Qg2 Qg2 19.Kg2 Re8 20.Rae1 Nc6 (20...Nfd7 21.e4+=) 21.e4 (better is 21.Bf6!? gf6 22.Rf6+=) 21...Ne5 22.Nd4 c5 23.bc5 Bc5 24.Nb3 (24.Nf5 Nfd7+=) 24...Bb6 (24...Bd6 25.Nd4+=) 25.Bc3 Re7 26.Re2 Nfd7 27.Bb4 Re8 28.Bd6 a5 (28...f6 29.Rd2+=) 29.Be5 (29.Rb1 Nc6+=) 29...Ne5 30.Nd2 f6 (30...Rc8!? 31.Nf3 Nf3 32.Kf3 Bd4–/+) 31.Rb1= b4 (31...Nc6 32.c3 Na7 33.c4=) 32.ab4 a4 33.Ra1 Ra8 34.Nc4 (better is 34.Ra3+=) 34...Bd4 35.Ne5 fe5 (35...Be5?! 36.Ra3 Bb2 37.Ra2–/+) 36.c3? (better is 36.Ra3 Bb2 37.Ra2–+) 36...Bb6?? (better is 36...Bc3 37.Rc1 Bb4–+) 37.Rea2 (37.Ra3 Be8+/–) 37...Be8 (37...Rd8!? 38.Re2 Rd3 39.Ra4 Be3+=) 38.Kf3 g5 (38...Kf7 39.c4 Bd4 40.Rb1+=) 39.Ke2+/– Kg7 40.c4 Bd4 41.Rb1 White prepares the advance b5 41...Kg6 42.b5 Bc5 Black intends a3 43.Rba1 (43.Kd2 h5 44.Kc3 hg4 45.hg4 Bd7+=) 43...a3= 44.Rb1 h5 45.b6 Bc6 46.Kd2 (better is 46.Kf3!?=) 46...hg4–/+ 47.hg4 Bb7 (better is 47...Bd7–/+) 48.Rb5+= Bd4 49.Kc2 (49.Rb3=) 49...Ra6 (better is 49...Bc6!? 50.Rb3 Bc5+=) 50.Kb1 (50.c5 Ra8+/–) 50...Kf6 51.Rb3 (51.Rh2 Bg1 52.Rh6 Kg7+=) 51...Ke6 (51...Rb6 52.Rb6 (worse is 52.Raa3 Rb3 53.Rb3 Bc8–+) 52...Bb6 53.Ra3=) 52.Rba3 (52.Rh2 a2 53.Ra2 Ra2 54.Ka2 Kd7=) 52...Ra3 (52...Rb6!? 53.Kc2 Kd6=) 53.Ra3= Bb6?? (better is 53...Kd7=) 54.Rb3+- Bd4 55.Rb7 Kd6 (55...Be3 56.Rb5+-) 56.Kc2 Kc6 (56...Ke6 57.Rb5 Be3 58.Kb3+-) 57.Rb5 Kd6 (57...Kc7+-) 58.Rd5 Ke6 (58...Kc6 59.Rd4! ed4 60.Kb3+-) 59.Kb3 (59.Rd4 ed4 60.c5 Ke5+-) 59...Kf6 (59...Bb6+-) 60.c5 (better is 60.Rd4 ed4 61.c5 Ke5+-) 60...Ke6 (60...Be3 61.Kc4 Ke6+-) 61.Rd4! ed4 (61...ed4 62.Kc4 Decoy) 62.Kc4 Ke5 63.c6 Kf4 64.c7 Kg4 65.c8Q Kf4 66.Kd4 g4 (66...Kf3 67.Qh3 Ke2 68.Qg2 Kd1 69.Qf2 g4 70.Kc3 g3 71.Qd2) 67.Qf5+- Kg3 68.Ke3 Kh4 (68...Kh3 69.Kf2 Kh4 70.Qg6 g3 71.Kf3 g2 72.Qg4) 69.Kf4 g3 (69...Kh3 70.Qg4 Kh2 71.Kf3 Kh1 72.Qg2) 70.Qg4 (70.Qh7) 1–0. alexp – valerypavlovich, net–chess.com, 2018.

4.d3 e5 5.e4 Bg4 6.Nbd2 Nbd7 7.Be2 Be7 8.0-0 b5 9.a4 ba4 10.Ra4 Nb6 11.Ra1 h6 12.c4 c5 (12...0-0!?+/–) 13.bc5+- dc5 14.h3 Bf3 15.Nf3 (15.Bf3?! Qd6=) 15...Bd6 16.Nh4 (better is 16.Ne5 0-0 17.Nc6+-) 16...Ne4?? (better is 16...Bc7+=) 17.de4+- Qh4 (17...Bc7 18.Nf5 g6+-) 18.Rb1 Qe7 19.Qd3 0-0 20.Rfd1 Rfd8 21.Qg3 Nd7 22.f4 Kh8 23.f5 Nf6 24.Bf3 Bc7 25.Rd5? Nd5–+ 26.ed5 f6 27.Be4 Rab8 28.Bc1 Rb1 29.Bb1 Rb8 30.Bd3? Rb3 31.Qe3 e4! 32.Ba3 Ra3 (32...Ra3 33.Kf1 Rd3–+) 0–1. bratek55 (1635) – arado, kurnik, 2011.

4.e3 Bg4 5.Be2 g6 (5...e5!?=) 6.h3 Bd7 7.c4 Bg7 8.a4 0-0 9.Nc3 c6 10.d4 Be8 11.0-0 Nfd7 12.Qb3 Qc7 13.b5 e5 14.Ba3 c5 15.Nd5 Qd8 16.Rfd1 b6 17.de5 Ne5 18.Ne5 Be5 19.Bb2 f6 20.Bf3 Ra7 21.a5! ab5 22.cb5 Ra5? 23.Nf6 Kg7 24.Be5 Rf6 25.Ra5 ba5 26.Rd6 Qd6 27.Bd6 Rd6 28.Qc3 Kh6 29.Qc5 Rf6 30.Qe5 Bb5 31.Qf6 (31.Qf6 Nd7 32.Qe7 Bc6 33.Bc6 Ne5 34.Qf8 Kh5 35.g4 Ng4 36.hg4 Kg5 37.Qf4 Kh4 38.g5 Kh5 39.Bf3#) 1–0. Seifert,Henryk (2160) – Olejnik,Bernard (1885), Turniej Szachowy Niepelnosprawnych Poland, 2010.

4.a3 c5 5.bc5 Bc5 6.e3 0-0 7.Be2 b5 8.c4 bc4 9.Bc4 Bb7 10.Be2 Nc6 11.0-0 Qe7 12.d4 Bd6 13.Nbd2 Rfb8 14.Nc4 Bc8 15.Bc3 Bc7 16.Rb1 (16.Qa4 Ne4 17.Rfc1 Bb7+=) 16...Rb1 17.Qb1 d5 18.Ncd2 (better is 18.Nb6!? Rb8 19.Nc8 Qa3 20.Qa1 Qa1 21.Ra1=) 18...Qa3–/+ 19.Qc2 Ne4 (better is 19...Qe7!?–/+) 20.Bb2 Qd6 21.Ba3 Nb4?? (better is 21...Qa3 22.Qc6 Ra7 23.Ne4 de4=) 22.Bb4+- Qb4 23.Ne4 de4 24.Qc7 ef3 25.Bf3 Rb8 26.Bb7!! h5 27.Qb8 Qb7 28.Rb1 Qc6 29.h3 Kh7 30.Qe5 Kg6 31.f3 Bb7 32.Qb8 Bc8 33.Qb2 a5?? 34.Rc1 Qd7 35.Qc2 Kh6 36.Qc8 Qa4 37.Qc5 Qa3 38.Qa3 (38.Qa3 Kg5 39.Qe7 Kg6 40.Rc7 a4 41.Qf7 Kg5 42.h4 Kh4 43.Qf4#) 1–0. donaldzikzpo (1615) – krainaoz (1885), kurnik, 2012.

4.a3 Nc6 5.g3 d5 6.Bg2 Bd6 7.d3 0-0 8.Nbd2 b5 9.Qc1 Bb7 10.c4 bc4 11.dc4 Ne4 12.c5 Be7 13.Ne4 de4 14.Nd4 Nd4 15.Bd4 Qd4 16.0-0 Bf6 17.Rb1 Bc6 18.Rd1 Qe5 19.e3 Rad8 20.Qc2 Rd1 21.Rd1 h6 22.a4 Rd8 23.Rd8 Bd8 24.Qb3 24...Qa1 25.Bf1 Ba4 26.Qc4 Bb5 27.Qb5 ab5 0–1. linakip – najlik23, kurnik, 2011.

4.c4 d6 (4...Nc6 5.Qa4=) 5.d4 Bf5 6.Nc3 g5 7.e3 Ne4 (7...Bg7!?+=) 8.Ne4 Be4 9.d5 f6? (better 9...Rg8+/-) 10.Nd4+- Qd7 (10...h5+-) 11.Qh5 Kd8 12.Ne6 Kc8 13.Qf7 b6 (13...Bf5 14.Nf8 Qd8 15.Ne6 Be6 16.Qe6 Qd7 17.Qe4+-) 14.Nf8 Qd8 (14...Qa4 15.Bc3 Nd7 16.Qe8 Kb7 17.Qd7 Qd7 18.Nd7+-) 15.Qe6 Kb7 16.Qe4 a5 (16...Rf8 17.c5! Ka7+-) 17.Ne6 Qf8 18.Nf8 Rf8 19.c5 bc5 20.bc5 c6 21.Qe7 Kc8 22.Qf8 Kb7 (22...Kc7 23.Qe7 Nd7 24.cd6 Kb6 25.Bd4 Kb7 26.Qd7 Kb8 27.Rb1) 23.Qe7 Kc8 24.cd6 Nd7 (24...Ra7 25.Qa7 Kd8 26.Qe7 Kc8 27.Qc7) 25.dc6 Ra7 (25...Kb8 26.Qd7 Ra6 27.Qb7) 26.Qe8 1-0. pcmvr - valerypavlovich (2135), net-chess.com, 2021.

4.d3 g6 (4...Nc6 5.a3=) 5.e4 Bg7 6.Be2 (6.e5 Nd5 7.Qd2 Nb6=) 6...d6 (6...Nc6 7.a3=) 7.0-0 0-0 8.c3 (8.Nbd2 e5=) 8...b5 (8...a5 9.b5=) 9.Nbd2 (9.a4 ba4 10.Qa4 Bd7+=) 9...c6 (9...Bd7 10.d4+=) 10.d4 (10.a4 a5+=) 10...Nh7 (10...a5 11.a4 Bd7 12.ab5 cb5 13.ba5 Ra5 14.Qb3+/–) 11.Qb3 (11.a4 Qb6+/–) 11...Be6 12.d5 (12.Qc2 Nf6+=) 12...cd5 13.ed5 Bf5 14.Rac1 (14.a4 ba4 15.Ra4 e5+/–) 14...Nd7 (14...e5 15.de6 fe6 16.c4 Bb2 17.Qb2+/–) 15.c4 (15.Nh4 Nb6 16.Nf5 gf5+/–) 15...Bb2 (15...bc4 16.Nc4 Bb2 17.Qb2+=) 16.Qb2+/– bc4 (16...Nhf6 17.Nd4+/–) 17.Rc4 (17.Nd4 a5+/–) 17...Ndf6 (17...Nhf6 18.Rh4=) 18.Rfc1 (18.Qd4!?+=) 18...Nd5= 19.Qd4 (19.Nd4 Nf4 20.Bf1 Bd7=) 19...Ndf6 (19...Nhf6 20.Qh4 Rc8 21.Rc8 Bc8 22.Qh6+=) 20.h3 (20.Qh4 Bd7 21.R4c2 Kg7=) 20...Qd7 (20...e5 21.Qe3 Be6 22.Rh4+=) 21.Nh4 (21.Nb3 Rfc8=) 21...Rac8 (21...Be6 22.R4c2+=) 22.Nf5 (22.Rc8 Rc8 23.Rc8 Qc8 24.Nf5 Qf5 25.Ba6 Qc2=) 22...Qf5 23.a4 (23.Bd3 Rc4 24.Qc4 d5=) 23...Rc4 (23...Qd7 24.b5=) 24.Rc4 (24.Bc4 Ra8=) 24...Rc8 (24...Ng5 25.Rc6 Ne6 26.Qh4+=) 25.g4 (25.Qe3!?=) 25...Rc4 (25...Qd7 26.Rc8 Qc8 27.Nf3+=) 26.Bc4+= (26.gf5?? Rd4 27.fg6 Ng5–+) 26...Qe5?? (better is 26...Qc2 27.Qd3 Qd1 28.Kg2 Kg7+=) 27.Qa7?? (better is 27.Qe5 de5 28.Ba6+/–) 27...Qe1–+ 28.Nf1 Qb4 (28...Ng5 29.Kh2–+) 29.Qa6–/+ d5 (better is 29...Ng5 30.Kg2 Nge4–/+) 30.Bb5? (30.Qa8 Kg7 31.Bd5 Ng5+=) 30...d4 (better is 30...Ng5!? 31.Qc8 Kg7–+) 31.Kg2 (31.Qa8 Kg7–+) 31...e5 32.Ng3 (better is 32.Qc8 Kg7 33.Qc4–+) 32...e4?? (32...Kg7 33.Bc6–+) 33.h4?? (better is 33.Ne4 Ne4 34.Qa8 Nf8 35.Qe4=) 33...Ng4?? (better is 33...Qe7–+) 34.Qc8+/– Kg7 35.Ne4?? (35.Qg4 Nf6 36.Qf4+-) 35...Ngf6 (35...Qe7 36.Qg4 f5 37.Qf4 Qe4 38.Kg3 Qf4 39.Kf4=) 36.Nf6 (36.Qc5!? Qb2 37.Qe5=) 36...Nf6–/+ 37.Qa6 (37.Qc7 Qc3 38.Qd6 Qd2–/+) 37...d3 (better is 37...Qd2!? 38.Qd6 Qf2 39.Kf2 Ne4 40.Ke2 Nd6–+) 38.Bd3–/+ Qh4 (38...Qg4 39.Kf1 Nd5 40.Bb5–/+) 39.a5 Ng4 (39...Qg4 40.Kf1 Nd5 41.Bb5–/+) 40.Qb6+= Qh2 (40...Ne5 41.Bb5+=) 41.Kf3 (41.Kf1 Ne5 42.Qd4 Qh3 43.Kg1 A) 43...Qd3?? 44.Qd3 (44.Qe5?! Kf8=) 44...Nd3 45.a6+-; B) 43...f6=) 41...Qh3 (41...Ne5 42.Ke2+=) 42.Ke2= Ne5 43.Qd4 Qd3?? (better is 43...Qf3 44.Kd2 Qf6=) 44.Qd3+- Nd3 45.Kd3 1–0. vaingrecsky – mpopp, net–chess.com, 2017.

4.a3 d5 5.e3 Be6 6.Nf3 c5 7.d4 (7.bc5!? Bc5 8.d4=) 7...cb4–/+ 8.ab4 Bb4 9.c3 Be7 10.Be2 0-0 11.0-0 Qc7 12.Qd2 Nd7 13.Na3 b5 14.Rfc1 Nb6 15.Qd3 Rfc8 16.Bd1 Qd7 17.Bc2 Threatening mate: Qxh7 17...g6 18.Nb1 Kg7 19.Nbd2 a5 Black intends b4 20.e4 (20.Ra2 a4–+) 20...a4 21.e5 (21.Qe3!?–+) 21...b4 22.ef6 Bf6 (22...Kf6?! 23.cb4 Bb4 24.Rcb1–+) 23.cb4 (23.Bd1 Bf5 24.Qe3 b3 25.Nb3 ab3 26.Ra8 Nc4–+) 23...Bf5 24.Qe2 Rc2 25.Rc2 Bc2 26.Rc1 Rc8 27.Ne1 (27.Qe3 Qb5–+) 27...Bf5 28.Rc8 Qc8 29.Qe3 (29.Ndf3 Qc3–+) 29...Nc4 30.Qc3 Nd2 31.Qd2 a3 32.h3 (32.g4 Bg4 33.h3 Bh3 34.Kh2–+) 32...Qc4 33.Nf3 a2 34.Qe1 Be4 35.Kh2 Bf3 36.gf3 Qd4 37.b5 a1Q (37...a1Q 38.Kh1 Qe1 39.Kg2 Qdf2) 0–1. kpoynter – pcmvr, net–chess.com, 2020.

4.c3 a5 5.Qb3 ab4 6.cb4 Bd6 7.e3 Na6 8.Bc4 0-0 9.Ba6 Ra6 10.Ne2 b5 11.Nec3 Bb7 12.0-0 c6 13.Ne4 Be7 14.Nbc3 d5 15.Nc5 Bc5 16.bc5 Qe7 17.d4 Bc8 18.Rfe1 Bf5 19.a4 ba4 20.Ra4 Rfa8 21.Ra6 Ra6 22.Qb8 Qf8 23.Qf8 Kf8 24.f3 Bd3 25.Rd1 Bc4 26.Rb1 g5 27.Kf2 Kg7 28.Kg3 f5 29.f4 h6 30.Nd1 Ra3 31.Rb2? Ra1?? 32.Rd2= Bb5 33.Nf2 Kg6 34.Nd3 f6 35.fg5 hg5 36.h4?? Ra3–+ 37.Nf2?? Re3 38.Kh2 g4 39.g3 Rf3 40.Kg2 Re3 41.Nd1?? Re1 42.Nc3 Bc4 43.Rf2 Bd3 44.Rd2 Re3 45.Nd1 Be4–+ 46.Kh2 Re1 47.Nf2 Bf3 48.Rc2 Be4 49.Rd2 Bf3 50.Rc2 Re3 51.Rd2 Be4 52.Nd1 Rf3 53.Nf2 Re3 ½–½. jackw171 – lemcosg, kurnik, 2012.

4.c3 g6 5.d4 Bg7 6.Nd2 d5 7.e3 0-0 8.Bd3 f5 9.g3 Nd7 10.Ne2 Nf6 11.h4 h5 12.Nf4 Ne4 13.Qb3 c6 14.Ne4 fe4 15.Be2 Bf6 16.a4 Bd7 17.Kd2 Qc8 18.c4 g5?? (better is 18...dc4 19.Bc4 Kg7=) 19.hg5+- Bg5 20.cd5 (20.Rh5 Qd8 21.cd5 Qf6+-) 20...Bf4 (20...h4+-) 21.gf4 Bg4 22.Bg4 hg4 23.dc6 Qc6 24.Rac1 Qd6 25.Rc5 Rfc8 26.Rg5 Kf8 27.Rh8 Ke7 28.Rh7 Qf6 29.Rg4 Rh8 30.Rh8 Rh8 31.Qd5 Qe6 32.Qe6 Ke6 33.Rg5 f6 34.Rc5 Kd6 35.b5 ab5 36.Rb5 Rh7? 37.Ke2 Kc6 38.Rf5 Rh6 39.a5 Kc7 40.Kd2 Kb8 41.Kc3 Ka7 42.Kc4 b6 43.ab6 Kb6 44.Kd5 Rh2 45.Ke4 Rf2 46.Rf6 Kb5 47.Rg6 Kc4 48.f5 Kc3 49.d5 Kd2 50.d6 Re2 51.Rg3 Ke1 52.Ke5 Kf2 53.Rh3 Kg2 54.d7 Re3 55.Re3 (55.Re3 Kg1 56.d8Q Kf1 57.Qd2 Kg1 58.Re1#) 1–0. orangutandu (1625) – joze59, kurnik, 2012.

4.e4 Bb4–/+ 5.Bd3 0-0 6.a3 Bc5 7.Nc3 Bd4 8.Nf3 Bc3 9.dc3 h6 10.0-0 d6 11.c4 Bg4 12.h3 Bh5 13.g4 Bg6 14.h4 Nc6 15.h5 Bh7 16.Rb1 b6 17.c3 Ne5 18.Ne5 fe5 19.f4 ef4 20.Rf4 Qg5 21.Qf3 Qa5 22.Rb3 Qa4 23.Qd1 g5 24.hg6 fg6 25.Rf8 Rf8 26.Bc2 Qc6 27.Qe2? g5 28.Rb4 Re8 29.Ba4 Qe4 30.Qe4 Re4 31.Bd7 Kg7 32.c5 Rb4 33.cb4 dc5 34.bc5 bc5 35.Kf2 a5 36.Ke3 c4 37.Kd4 Bd3 38.Be6 Kf6 39.Bc4 Bc4 40.Kc4 Ke5 41.Kb5 Kf4 42.Ka5 Kg4 43.Kb5 h5 44.a4 h4 45.a5 h3 46.a6 c6! 47.Kc6 h2 48.a7 h1Q 49.Kc7 Qa8 50.Kb6 Kh4 51.Ka6 g4 52.Kb6 g3 53.Ka6 g2 54.Kb6 g1Q 55.Ka6 Qg6 56.Kb5 Qa7 57.Kc4 Qa5 58.Kd4 Qg4 59.Ke3 Qa3 60.Kf2 Qgg3 61.Kf1 Qh2 62.Ke1 Qa1# (62...Qc1#) 0–1. aleksandras19 – lupi1957, kurnik, 2012.

4.a3 d5 5.Bg2 e5 6.Nf3 e4 7.Nd4 Bd7 8.0-0 Be7 9.d3 0-0 10.c4 ed3 11.ed3 (11.cd5? Nd4 12.Bd4 de2 13.Qe2 Bb5–+; worse is 11.Qd3 Ne5 12.Qc2 Nc4 13.Bd5 Na3 14.Bf7 Rf7 15.Ba3 Bd6–/+) 11...dc4 12.dc4 Nd4 13.Bd4 Qc8 14.Nc3 Rd8 15.Qc2 Bh3 16.Bf6 Bf6 17.Rad1 Bg2 18.Kg2 b6 19.Nd5 Qb7 20.Kg1 Be5 21.Qe4 c6 22.Qe5 cd5 23.Rd5 Re8 24.Qd4 h6 25.Rd1 a5 26.ba5 Ra5 27.Ra5 ba5 28.Qd7?? Qd7 29.Rd7+/– Re1 30.Kg2 Ra1 31.c5 Ra3 32.c6 Rc3 33.c7 Kh7 34.Rf7 Kg6 35.Rd7 a4 36.Rd4 a3 37.Ra4 Rc7 38.Ra3 Rc2 39.Ra5 Kf6 40.h4 g6 41.g4 Ke6 42.Kg3 Kf6 43.f3 Ke6? 44.Ra6 Kf7 45.h5 gh5 46.Rh6 hg4 47.Kg4 Kg7 48.Ra6 Rg2 49.Kf5 Rf2 50.f4 Rf1 51.Ra7 Kf8 52.Kg5 Rg1 53.Kf6 Ke8 54.f5 Rg3 55.Ke6 Re3 56.Kf6 Kd8?? 57.Ra8 Kd7 58.Kf7 Rf3 59.f6 Kd6 60.Rd8 Ke5 61.Re8 Kd6 62.Re2 Kd5 63.Ke7 Rf4 64.f7 Rf5 65.f8Q Rf8 66.Kf8 1–0. tyop (1755) – szachmat123, kurnik, 2012.

4.a3 e5 5.Bg2 d5 6.Nf3 e4 7.Nd4 Ne7 8.0-0 Ng6 9.e3 h5 10.d3 h4 11.de4 hg3 12.fg3 Ne4 13.Be4 de4 14.Nc3 Qe7 15.Nd5 Qd7 (15...Qd6 16.Nf5 Bf5 17.Rf5=) 16.Nf4 (better is 16.Nf5 c6 17.Nb6 Qd1 18.Rad1 Bf5 19.Na8+/–) 16...Ne5 17.Qe2 g5 (17...Qe7 18.Qe1–/+) 18.Rad1 (18.Nh5!? Qh3 19.Nf6 Ke7 20.Ne4+/–) 18...gf4= 19.ef4 Nf3?? (better is 19...Qh3 20.fe5 Bg4=) 20.Nf3+- Qf5 21.Bh8 Bd7 22.Nh4 Qh7 23.Bf6 Bb5 24.Qd2 Bd6 25.Rfe1 Bc6 26.c4 b6 27.Qd4 a5 28.b5 Bc5 29.Qc5! bc5 30.bc6 Qh6 31.Re4 Kf8 32.Be7 Kg8 33.Bc5 Qc6 34.Re5 f6 35.Rf5 Qa4 36.Re1 Rb8 37.Kg2 Qc4 38.Re7 Rb2 39.Kh3 Qf1 40.Kg4 Rh2 41.Re8 Kf7?? 42.Re7 Kg8 43.Re8 Kf7 44.Re7 Kg8= ½–½. rryy44 – lamp58, kurnik, 2012.

3.a3 b6 4.e3 (4.e4 e6+= (4...Ne4? 5.Qf3+-)) 4...Bb7= 5.Nf3 c5 6.b5 Nc7 7.c4 (7.Nc3 g6=) 7...d5 (7...g6 8.Bf6 ef6 9.Nc3=+) 8.d3 (8.cd5 Ncd5 9.Nc3 g6=) 8...Qd7 (8...g6 9.Nbd2=+) 9.Nc3 (9.Nbd2 g6+=) 9...d4 (9...Rd8 10.Ne5 Qf5 11.Nd5 Ncd5 12.cd5 Rd5 13.g4+/-) 10.ed4+= cd4 11.Ne2 Ne6 (11...Bf3 12.gf3 g6 13.f4+=) 12.Nfd4 (12.Ned4 Nd4 13.Bd4 Rd8+=) 12...Nd4 (12...g6!?=) 13.Nd4+= e5 14.Nf3 Bd6 15.Be2 (15.Ne5 Qf5 16.Nc6 0-0+/-) 15...0-0 (15...Qf5 16.0-0 0-0 17.d4 ed4 18.Nd4+=) 16.0-0 (16.Ne5 Qe6 17.d4 Bg2 18.Rg1=) 16...Rad8 (better 16...Rfe8=) 17.Be5?? (better 17.Ne5 Qc7 18.f4+/-) 17...Bf3-+ 18.Bf6 Be2 19.Qe2 gf6 20.h4 (20.Qf3 Rfe8-+) 20...Kh8 (20...Bc5 21.Rad1-+) 21.h5 (21.Qf3 Be5 22.Rad1 Qd4-+) 21...Rg8 22.h6 (22.Qf3 Be5 23.Rad1-+) 22...Rg6 (22...Rg2! 23.Kg2 Rg8 24.Kf3 Qf5 25.Ke3 Qf4) 23.Qe3 (23.Qf3 Rdg8 24.Rfe1 Rg2 25.Qg2 Be5-+) 23...Re8 (better 23...Rdg8 24.Rfd1 Rg2 25.Kf1 Qf5 26.d4 Bf4 27.Qb3 Rg1 28.Ke2 Re8 29.Qe3 Be3 30.f3 Qc2 31.Rd2 Qd2) 24.Qd2 (24.Qf3 Reg8 25.Rfe1 Rg2 26.Qg2-+) 24...Qh3 25.g3 (25.f4 Bc5 26.d4 Bd4 27.Rf2 Qg2) 25...Bg3! 26.fg3 (26.fg3 Rg3 Mate attack) 26...Rg3 27.Kf2 (27.Qg2 Rg2) 27…Qh2 (27...Qg2) 0-1. Fettito (1700) - WakeUpLuke (1755), lichess.org, 2019.

3.a3 c5 4.bc5 Nc5 5.e3 g6 6.Nf3 Bg7 7.c4 0-0 8.d4 Qb6 9.Qc2 Nb3 10.Ra2 d6 11.Nc3 Bf5 12.Bd3 Bd3 13.Qd3 Rac8 14.0-0 Qa6 15.Nd2 (15.Rb1 Na5–/+ (15...Rc4?! 16.Nd1=)) 15...Nd2 16.Qd2 Rc4 17.Rc1 Rfc8 18.Raa1 d5 19.Ne2 Ne4 20.Qd1 Qf6 21.f3 Bh6 22.f4 Qh4 23.g3 Qg4 24.Rc4 Rc4 25.Rc1? Qf3 (25...Qf3 26.Qf1 Qe3 27.Kg2 Nd2–+) 0–1. Fournier,Frederic – Floydgg (2305), Partie ιvaluιe, 1m + 0s, 2008.

3.a3 c6 4.Bf6 (4.Nf3 d6=) 4...gf6 (4...ef6 5.e4=) 5.e3 Bg7 (5...Nc7 6.d4=) 6.Ba6+= ba6 7.Nc3 (7.Qg4 Rg8 8.Qf5 Bf8+=) 7...f5 (7...a5 8.b5+=) 8.Qh5 Qc7 (8...e6 9.Nf3+=) 9.Qf5+/– d6 (9...a5 10.Qa5 Qa5 11.ba5 Bc3 12.dc3+=) 10.Qd3 (10.Qf3 Rb8+/–) 10...Qb6 (10...a5 11.b5+/–) 11.Nf3 (11.Rb1 Rb8+/–) 11...Bg4 (11...a5 12.Na4 Qb5 13.Qb5 cb5 14.Nc3+=) 12.Nd4 Bd7 (12...Rb8 13.h3 Bd7 14.Na4=) 13.0-0 (13.Rb1 Rb8+/–) 13...h5 (13...c5 14.bc5 dc5 15.Nf5 Bf5 16.Qf5 Bc3 17.dc3+-) 14.Rab1+- a5 (14...Rb8 15.a4+-) 15.b5 cb5 16.Qe4 Qb8 17.Ndb5 d5 18.Nd5 Bb5 19.Qe7# 1–0. pierre – OLP65, internet, 2008.

3.a3 d5 4.Nf3=.

3.a3 d6 4.g3 c5 5.b5 Nc7 6.c4 e5 7.Bg2 Rb8 8.a4 g6 9.e4 Bg7 10.Ne2 0-0 11.0-0 a5 12.Nbc3 Nd7 13.Nd5 Nd5 14.cd5 Nb6 15.Qc2 f5 16.f4 Qe7 17.d3 Bd7 18.Rae1 Rbe8 19.Kh1 Qd8 20.Bc3 Re7 21.Ba5 Qc7 22.fe5 Be5 23.d4 Bg7 24.e5 c4 25.e6 Bc8 26.Rd1 Bf6 27.Nc3 Rg7 28.Rf3 Bd8 29.Rdf1 Qe7 30.g4 Qh4 31.gf5 gf5 32.Rf5 Rf5 33.Qf5 Be7 34.Bb6 Rg6 35.Bd8 Rh6 36.Qf7 Kh8 37.Qf8 Bf8 38.Rf8 Kg7 39.Rf7 Kg8 40.Bh4 Rh4 41.Rc7 Be6 42.de6 Kf8 43.e7 Ke8 44.Bb7 Rd4 45.Bc6 1–0. kingscrusher – willow27, ChessWorld.net, 2005.

3.a3 h5 4.c4 c5 5.b5 Nc7 6.e3 Ne4 (6...d5 7.Nf3=) 7.d3 (7.Nf3 Nf6+/-) 7...Nf6+= 8.a4 d5 9.Bf6 (better 9.Nd2!?=) 9...gf6=+ 10.Nc3 Bg4 (10...d4 11.ed4 cd4 12.Ne4-/+) 11.f3 Be6 12.Qb3? (12.cd5 Nd5 13.Nd5 Qd5-/+) 12...f5 (12...Bh6!? 13.Nd1-+) 13.d4 (13.b6 ab6 14.Qb6 d4 15.ed4 cd4-/+) 13...cd4 14.ed4 f4 (14...dc4 15.Bc4 Qd4 16.Be6 Ne6 17.Nge2-/+) 15.Bd3? (15.c5 Bh6=) 15...Bg7 (15...dc4!? 16.Bc4 Qd4 17.Be6 Ne6-/+) 16.Nge2=+ f5 (16...dc4 17.Bc4 Rc8=+ (17...Bd4? 18.Rd1 Bc4 19.Qc4+-)) 17.c5+/- h4 18.Nf4 (18.h3 Bc8+/-) 18...Bd4+= 19.Ne6?? (better 19.Qb4 Bf6 20.Ne6 Ne6 21.Bf5 Nc5 22.0-0-0 Bc3 23.Qc5+/-) 19...Ne6-/+ 20.Rd1?? (20.Bf5 Nc5 21.Bg6 Kf8-/+) 20...Nc5?? (better 20...Qa5 21.Bf5 Qc3 22.Qc3 Bc3 23.Kf1 Nf4-+) 21.Qa3?? (better 21.Qb4!? e5 22.Bf5-/+) 21...Qd6 (better 21...Qa5 22.Ke2 Qc3 (22...Bc3 23.Qc5 e6 24.Rc1=+) 23.Qc3 Bc3 24.Bf5 d4-+) 22.Bf5?? (better 22.Kf1 h3 23.g3 Bc3 24.Qc3-+) 22...Nd3!! 23.Bd3 (23.Rd3 Qa3 Discovered attack (23...Qe5 Decoy); 23.Bd3 Qa3 Discovered attack (23...Bc3 Decoy)) 23...Qa3 24.Nd5 Qc5 (better 24...Rc8 25.b6 Kf7 26.Be4-+) 25.Be4 (25.Bg6 Kd7 26.Be4 Rad8-+) 25...Bc3 (better 25...Rd8 26.Ke2 Rd5 27.b6-+) 26.Nc3 Qc3 27.Kf2 Rd8 (27...Qb2 28.Ke3 Qg2 29.Bb7-+) 28.Rd8 (28.Bg6 Kf8 29.Rd8 Kg7 30.Rh8 Qd2 31.Kf1 Kh8 32.b6-+) 28...Kd8 29.Bb7 (29.Re1 Qd4 30.Re3 Kc7-+) 29...Qc2 (29...Qd2 30.Kf1 Rh5 31.Bd5 Rd5 32.h3 Qe3 33.g4 Rd1 34.Kg2 Qe2) 30.Ke3-+ Qg2 31.Rd1 Ke8 (31...Kc7 32.Be4-+) 32.Bc6 (32.Rd2 Qg1 33.Kd3 Rh6 34.Bc6 Kf7-+) 32...Kf7 33.f4 (33.Rd4 Qh2 34.Rf4 Kg7 35.Rg4 Kh6-+) 33...Qh2 34.Bd5 (34.Rd5 Qg3 35.Ke2 Qf4-+) 34…e6 (34...e6 35.Bb7 Rg8-+) 0-1. Darkseid (1725) - ultimateegg2, ChessWorld.net, 2011.

3.b5 Nc5 4.c4 e6 5.e3 (5.Nf3 a6=+) 5...g6 (5...a6 6.Nf3=+) 6.f3 (better 6.Nc3=) 6...Bg7?? (better 6...e5=+) 7.d4+- Nh5 8.Qc2 b6 (8...Qh4 9.Ke2 0-0+-) 9.dc5 bc5 (9...Bb7 10.Bg7 Ng7 11.Bd3+-) 10.Bg7 Ng7 11.Ne2 (11.Nc3 0-0 12.Bd3 a6+-) 11...Rg8 (11...Bb7 12.Nbc3+-) 12.Ng3 (12.Nbc3 Bb7+-) 12...Qf6 (12...Nf5 13.Nc3+-) 13.Nc3 a6 (13...Bb7 14.Bd3 Nf5 15.Kf2+-) 14.Bd3 ab5 15.cb5 Ra3 (15...Nf5 16.Kf2 d5 17.a4+-) 16.Rc1 1–0. GuestMVSH – GuestNJCX, freechess.org, 2020.

3.a3 Ba6 4.Nf3 d5 5.d4 c6 6.Nbd2 Nbd7 7.Rc1 Qc7 8.c4+= dc4 9.Nc4 e6 10.e3 Rc8 11.Bd3 h6 12.0-0 Bb7 13.e4 a6 14.Re1 Be7 15.d5 ed5 16.ed5+- c5?? 17.d6 Qc6 18.Re7 Kf8 19.Bf5 Rd8 20.Nfe5 Qg2# 0–1. dennism (2100) – grahamtrue (2070), net–chess.com, 2008.

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

3.a3 d5 4.Nf3 e6 5.d4 Ne4 6.Nbd2 b5 7.e3 Nd6 8.Be2 Nc4 9.Nc4 bc4 10.0-0 Bb7 11.Nd2 Qh4 12.Nf3 Qg4 13.Ne5 Qh4 14.Nf3 Qh6 15.Bc1 Rb8 16.e4 Qh5?? 17.ed5 ed5 18.Re1 Kd8?? 19.Ne5!+- Qh4 20.Nf7 Ke8 21.Nh8 Nd4 22.Bc4 Be7 23.Bd3 Kd8 24.Nf7 Kc8 25.Bg5! Bg5 26.Ng5 Qg5 27.Re8 Qd8 28.Rd8 Kd8+- 29.Bh7 Nb5 30.c4 Nd6 31.c5 Ne4 32.Be4 Ba6 33.Qd5 Ke7 34.Re1 Rd8 35.Bd3 Kf8 36.Qf5 Kg8 37.Ba6 Rf8 38.Bc4 Rf7 39.Qf7 Kh7 40.Qh5# 1–0. Bonetti,Shane – RChess, 2000.

3.a4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.a4 Nf6).

3.b5 c5 4.e3 d5 5.c4 Bb7 6.Nf3 e6 7.a4 Nbd7 8.Be2 Be7 9.0-0 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 9.a4 Nbd7).

3.b5 c6 4.c4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bb7 8.e3 g6 (8...e6 9.Nf3=) 9.Nf3 Bg7 10.Be2 0-0 11.0-0 d5 12.d4 Nbd7 (12...dc4 13.Bc4 cb5 14.Bb5=) 13.Nc3 dc4 14.Bc4 Re8 (14...c5 15.d5+=) 15.Qb3 (15.Bf7 Kf7 16.Ng5 Kg8 17.Qb3 e6 18.bc6 Bc6 19.Ne6+-) 15...e6= 16.Ne5 (better 16.bc6 Bc6 17.Be2+=) 16...Nd5?? (better 16...Ne5 17.de5 Ng4=+) 17.bc6 (better 17.Nc6!? Bc6 18.bc6+-) 17...Ne5+- 18.cb7 Nc4 19.Qc4 Nc3 20.Bc3 Qd7 21.Qa6 Rb8 22.Rb1 (22.Qb6 Rb7 23.Qa5 Ra7+-) 22...Qc6 (22...Qb7 23.Qb5+=) 23.Be1 (better 23.Ba5!? Qb7 24.Qb7 (24.Rb6?? Qa6 25.Rb8 Bf8–+) 24...Rb7 25.Rb6+- (worse 25.Bb6 Bf6=+)) 23...Qb7+= (23...Rb7?? 24.Qa8 Bf8 25.Bb4+-) 24.Qb5 Qc7 25.h3 h5 (25...e5 26.d5=) 26.f4 (26.Ba5 Qc2 27.Bb6 e5+-) 26...Qd6 (26...Qc2 27.Ba5=) 27.Kf2 (27.Bb4 Qc7+-) 27...Bf6 (better 27...Qc7+=) 28.Rc1 (better 28.Bb4 Qd8 29.Bc5+=) 28...Bd8?? (better 28...Bd4!? 29.Ke2 Qa3–/+) 29.Rc6?? (better 29.Bb4 Bh4 30.g3+-) 29...Qd7 (29...Qa3!? 30.Bb4 Qb3=) 30.Bb4+= Rc8 (30...Bh4!? 31.g3 Bf6+=) 31.Rb6+- White gets strong initiative 31...Rc2 (better 31...Qb5 32.Rb5 Bf6+-) 32.Kg1?? (better 32.Kf3 Qb5 33.Rb5+-) 32...Qb5= 33.Rb5 Rc1? (better 33...Bh4!? 34.Rc5 Ra2 35.Rc8 Kh7=) 34.Kf2+- Bh4 35.g3 Rc2 36.Kf3 Bf6 37.g4 (37.Rb8 Kh7+-) 37...hg4 (37...Rh2!? 38.Rb8 Kh7+-) 38.hg4+- Bh4 (38...Rb2 39.Rb8 Kh7 40.Rb7+-) 39.Rb8 Kg7 (39...Kh7 40.g5 Rb2 41.Bd6 Rb8 42.Bb8+-) 40.Bd6 (better 40.Bf8!? Kh7 41.g5+-) 40...f5+- Do you see the mate threat? 41.Be5 Kh6?? (better 41...Kf7 42.Rb7 Kf8+-) 42.Rh8 1–0. BeepBeepImAJeep – supa333 (1705), IM BeepBeepImAJeep simul, 2017.

3.b5 d6 4.e3 Bb7 5.Nf3 g6 6.d4 Bg7= 7.Nbd2 0-0 8.Bd3 c6 9.a4 cb5 10.ab5 a5 11.c4 Nbd7 12.e4 e6 13.0-0 Qc7 14.Qb3 e5 15.de5 Ne5 16.Ne5 de5 17.Rfc1 (17.Rfd1 Rfd8=) 17...Nd7 (17...Bh6 18.Qc2=+) 18.Qd1 (18.Ba3!? Rfd8 19.Rd1=+) 18...Nc5=+ 19.Qf3? (better 19.Qe2=+) 19...Rad8 (19...Nd3?! 20.Qd3 Bh6 21.Qe2=+) 20.Rc3 Bc8?? (better 20...Qd6 21.Rd1 Nd3–+) 21.Qe2 (21.Ba3 Rfe8=) 21...h5 (21...Bh6 22.Rd1=+) 22.Bc2 Bg4 23.f3 Be6 24.Nb3 Nb3 25.Bb3 Qa7 (25...Bh6 26.Rc2=) 26.Rd3 (26.Ba3!?+-) 26...Rd3= 27.Qd3 Bf6 (27...Qc7 28.Kh1=) 28.f4+= Rd8 29.Qe3?? (29.Qc3 Qc7 30.Kh1 Bg7+=) 29...Qc7 (better 29...ef4 30.Qf2 Bb2 31.Qb2 Qd7–+) 30.Qf2 Bc4 (30...Rd3 31.Bc2 Rd7=) 31.Bc4 (better 31.Rc1 Bb3 32.Rc7 Rd1 33.Qf1 Rf1 34.Kf1+-) 31...Qc4=+ 32.fe5 Be7 (32...Bg5 A) 33.Qb6?? Qe2 34.Kh1 Rd2–+ (34...Qb2?! 35.Qa5 Qe5 36.Qa4–+); B) 33.e6 fe6 34.Rf1–/+ (34.Qb6? Qb3 35.Re1 Qb2–+)) 33.Rf1?? (better 33.Kh1–/+) 33…Bc5–+ (33...Bc5 34.Bc1 Bf2 35.Kf2 Qe4–+) 0–1. GuestDZWJ – GuestRCTN, freechess.org, 2020.

3.Nc3 Bb7 4.d3 g6 5.Qd2 Bg7 6.e4 d6 7.0-0-0 Nbd7 8.f3 0-0 9.a3 Re8 10.Nge2 Rc8 11.h4 c5 12.g4 cb4 13.ab4 Ne5 14.Nd4 Nfd7 15.f4 Ng4 16.Qe2 Ngf6 17.Bh3 e6 18.Ndb5 Nf8 19.Rhg1 a6 20.Nd4 N6d7 21.Nf3 Bc3 22.Bc3 Rc3 23.Kd2 Qc7 24.Rc1 Rc8 25.Qd1 b5 26.Ne1 Be4 27.Bf1 Bf5 28.h5 Qb6 29.Rg3 Qf2 30.Qe2 Qg3 White resigned 0–1. Crusader Rabbit (1680) – altobelli (1860), ChessWorld.net, 2015.

3.Nc3 e5!? 4.b5 d5=+.

3.Nc3 g6 4.e4+= d6 5.Nf3 Bg7 6.Be2 (6.Nd5 0-0 7.Nf6 Bf6 8.Bf6 ef6=) 6...0-0 (6...Ne4 7.0-0=+) 7.0-0 (7.d4 c5 8.bc5 dc5 9.dc5 Ne4 10.Ne4 Bb2 11.Qd8 Rd8=) 7...Bb7 (7...Ne4!? 8.Re1 a5=+) 8.d3= a6 9.d4 (better is 9.Re1!?=) 9...Ne4=+ 10.Bd3 (10.Ne4 Be4 11.Ng5 Bf5–/+) 10...Nc3–/+ 11.Bc3 c5 12.Ng5 (better is 12.a3!?–/+) 12...cd4 13.Bb2 (13.Bd2 Nc6–+) 13...h6 14.Rb1?? (better is 14.Ne4–+) 14...hg5 15.Re1 Qd7 (15...e6 16.Rc1–+) 16.c3 (16.Qd2 g4–+) 16...dc3 17.Ba3 (17.Bc1 g4–+) 17...Qc6 18.Be4 Qc7 (18...d5 19.Bd3 Qf6 20.b5–+) 19.Bd3 (19.Bb7 c2 20.Ba8 cd1Q (20...cb1R?! 21.Qb1 Rd8 22.Qd3–/+; 20...cb1Q?! 21.Qb1 e6 22.Rc1–/+) 21.Rbd1 Nc6 22.Bc6 Qc6–+) 19...Re8 (19...Rc8 20.Bc2–+) 20.Re3 (20.Bc1 Rc8 21.Bc2 e6–+) 20...Nd7 21.Rh3 (21.Rc1 Rac8–+) 21...f5 (better is 21...Rac8 22.Qc2 Ne5–+) 22.Bc4 (22.Bc1–+) 22...Qc4 23.Qe1 Qc6 (23...Qa2!? 24.Ra1 Qd5 25.Qf1–+) 24.Qe6 (24.Rg3 Be5 25.Rg5 Qe4 26.Qe4 Be4–+) 24...Kf8 25.Kf1 c2 (25...Qg2!? 26.Ke1 Bd5 27.Rg3 Qg3 28.Qf5 gf5 29.hg3 Ba2 30.Rc1–+) 26.Rc1 Qg2 27.Ke1 Qh3 (28.Rc2 Bc3 29.Rd2 Ne5 30.Qe5 Bd2 31.Kd1 de5 32.Kd2 Red8 33.Kc2 Qa3 34.Kb1 Qb4 35.Kc2 Rac8) 0–1. Kus,Maria – Kotula,Oktawia, Poland–ch U10 Girls, 2001.

3.c4 c5 4.b5 a6 5.e3 (5.ba6 Ba6 6.e3 e6=) 5...d5 (5...ab5 6.cb5 d5 7.Nf3+=) 6.Nf3 (6.cd5 Nd5 7.d4 Nd7=) 6...dc4 (6...ab5 7.cb5 e6 8.Be2+=) 7.ba6 (7.Qa4!?=) 7...Ba6+= 8.Bc3 (8.Ne5 Nbd7+=) 8...e6 (8...b5!?–/+) 9.Na3+= Nbd7 10.Be2 (10.Nc4 Be7+=) 10...b5–/+ 11.Bf6 (11.Rb1!? Rb8 12.0-0–/+) 11...Nf6–+ 12.0-0 (12.Qc2 Qa5 13.Qb2 Bd6–+) 12...Bd6 13.h3 (13.Qc2 Qa5 14.Qb2 0-0–+) 13...0-0 14.Nb1 Bb7 15.Nc3 Nd5?? (better is 15...Ra5–+) 16.Nb5= Qb6 (16...Nb6 17.Nd6 Qd6 18.Qc2=) 17.Nd6 Qd6 18.Qc2 (18.Bc4!? Rfd8 19.Qe2+=) 18...Nb4+= 19.Qc4?? (better is 19.Qb2+=) 19...Ba6–+ 20.Qe4 Be2 21.Rfe1 (21.Rfc1 Na2 22.Re1 Bf3 23.Qf3 Qd2–+) 21...Bf3 22.gf3 Qd2 23.Rec1 (23.Red1 Qb2–+) 23...Nd3 (better is 23...Ra2!? 24.Rf1–+) 24.Rf1 Ra2 (better is 24...Ra3–+) 25.Ra2 Qa2 26.Qd3 c4 27.Qc3 Rc8 28.Rd1 Qb3 29.Rc1 Qc3 30.Rc3 f6 31.Kf1 e5 32.e4 Kf7 33.Ke2 Ke6 34.Ke3 Kd6 35.f4 ef4 36.Kf4 g6 37.h4 h6 (37...Kc5 38.Ke3–+) 38.Ke3 Ke5 (38...Kc5!? 39.Rc1 Ra8–+) 39.f4–/+ Ke6 40.Kd4 g5 41.fg5 fg5 42.hg5 hg5 (better is 42...h5+=) 43.Ke3?? (better is 43.Rc4 Rd8 44.Ke3=) 43...Ke5–+ 44.Rc2 (44.Ra3 c3 45.Ra5 Kd6 46.Ra6 Rc6–+) 44...g4 (44...c3 45.Kf3–+) 45.Rg2 (45.Rh2 c3 46.Rh5 Kf6 47.Rh6 Kg5–+) 45...Rg8 (45...c3 46.Rc2–+) 46.Rc2 (46.Ra2–+) 46...g3 47.Rg2 c3 (47...Rd8 48.Rc2 Rd3 49.Ke2–+) 48.Kf3 (48.Kd3 c2! 49.Kc2 Ke4–+) 48...Rf8 (48...Kd4 49.e5 Rf8 50.Kg4–+) 49.Ke3 Rf4 (better is 49...Rc8 50.Rc2 g2 51.Rg2 c2 52.Rg5 Kf6 53.Rf5 Ke6–+) 50.Rg3= c2 51.Rg5 Kf6 (better is 51...Kd6!? 52.Rg1 Rg4=) 52.Rc5+/– Rh4 53.Rc2 Ke5 54.Rc5 Kd6 55.Ra5 Rh3 (55...Rh1 56.Ra8+/–) 56.Kd4 Rh2 (56...Rb3 57.e5 Ke6 58.Ra6 Ke7 59.Ra8+/–) 57.Ra6+- Kd7 58.Kd5 Rd2 59.Ke5 Ke7 60.Ra7 Kd8 61.Ke6 Rh2 62.Kd6 (62.Ra8 Kc7+-) 62...Rh6 (62...Rd2 63.Ke5+/–) 63.Kd5+- Kc8 64.e5 Kb8? (better is 64...Kd8+-) 65.Rg7 (better is 65.Rd7+-) 65...Ra6 (65...Rh1+-) 66.e6 Ra5 67.Kd6 Ra6 68.Ke7 Kc7 69.Kf8 Kd6 70.e7 (70.e7 Ra8 71.e8Q Re8 72.Ke8+-) 1–0. overtoom – goemon, gameknot.com, 2014.

3.c4 d5 4.cd5 Nd5 5.a3 Bb7 6.e4 Nf4 7.d3 (7.Qf3 Ng6+=) 7...e5 (7...a5 8.Qd2 Ne6 9.Nf3=) 8.Be5+= Ng6 (8...Bd6!? 9.Bc3 0-0+=) 9.Bc3+/- Nd7 10.Nd2 Bd6 (10...a6 11.Ngf3+/-) 11.h4 (11.Bg7 Rg8 12.Bc3 Qe7+-) 11...Nh4 (better 11...0-0!?+=) 12.g3 (12.Bg7?! Rg8 13.Bc3 Ng2 14.Bg2 Rg2+=) 12...Ng6 13.Bg7 Rg8 14.Bb2 Qg5 (14...Nf6!?+-) 15.Ngf3 Qe7 16.Rh7 0-0-0 (16...Ndf8 17.Rh6+-) 17.Qb3 Nde5 18.Ne5 Be5 19.Rf7 Qd6 (19...Qe8 20.Rc1 Bd5 21.Be5 Bf7 22.Rc7 Kb8 23.Re7 Ne5 24.Re8 Bb3 25.Re5 Bc2+-) 20.Rc1 c6 (20...Kb8+-) 21.Nc4 Qb8 (21...Rge8 22.Nd6 Rd6+-) 22.Nb6! ab6 23.Qe6 A classical mating theme 23...Rd7 24.Qd7 1-0. karpasov (2630) - vaingrecsky (2175), net-chess.com, 2022.

3.d3 Bb7 4.e4 d6 (4...e6 5.a3=) 5.Nf3 e6 (5...e5=) 6.c4 (6.Be2 d5 7.e5 Ng4= (< 7...Bb4 8.c3+/–)) 6...Be7 (6...d5 7.Qa4 Qd7 8.b5 de4 9.Ne5=+) 7.Nbd2 (7.Qa4 Qd7 8.Qd7 Nbd7= (< 8...Nfd7 9.Bg7 Rg8 10.Bc3+/–)) 7...0-0 8.g3 (8.Be2 c5=) 8...h6 (8...c5 9.b5=+) 9.Bg2= Nbd7 (9...c5 10.a3=) 10.0-0 c5 11.b5 a6 12.a4 ab5 (12...e5 13.ba6 Ra6 14.Rb1=) 13.ab5 Qc7 (13...Ra1 14.Qa1 e5 15.Nh4+=) 14.Qb3 (14.Qe2 Ne5=) 14...d5 15.e5 Ng4 16.cd5 (16.Rae1 Rfd8=) 16...Bd5=+ 17.Nc4 (better is 17.Qc3 f6 18.d4=+) 17...Nge5?? (better is 17...Ra1 18.Ra1 Bf3 19.Bf3 Nge5=+) 18.Nfe5+- (18.Be5 Ne5 19.Nfe5 Ra1 20.Ra1 Qe5 21.Ne5 Bb3=+) 18...Ne5 19.Bd5 ed5 20.Ne5 Bf6 21.Nc6 Rfe8?? 22.Bf6 gf6 23.Qd5 Kg7 24.Ra8 Ra8 25.Re1 Ra2 26.Re7 Qc8 27.Qf7 (27.Qf7 Kh8 28.Qg7) 1–0. Fredek (2090) – Kpkd, Freundschaftspartie, 5m + 0s, 2005.

3.d3 d5 4.Nf3=.

3.d3 d6 4.Nf3 Nc6 (4...e5 5.Nbd2=) 5.a3 (5.b5 Na5=) 5...e5 6.b5 (better is 6.c4=) 6...Bb7?? (better is 6...Ne7=) 7.bc6+- Bc6 8.e4 (8.Nc3 Be7+-) 8...d5 (8...Be7+-) 9.Ne5 de4 (9...Bb7+-) 10.Nc6 Qd6 (10...Qd7 11.Ne5 Qb5 12.Ra2 Qa5 13.Nd2+-) 11.Nd4 (11.Ne5 Be7+-) 11...c5 (11...Qe5 12.de4 Qe4 13.Qe2 Qe2 14.Be2+-) 12.Nf5 (12.Nb5 Qc6 13.de4 Qe4 14.Be2 Rd8+-) 12...Qe6 (12...Qd7 13.Ne3+-) 13.de4 Ne4 (13...Qe4 14.Ne3 Be7+-) 14.Bb5 Qd7 (14...Qc6 15.Bc6) 15.Qd7 1–0. Pumphut – escaped, Hauptsache SPASS, 2003.

3.d4 Bb7 4.c4 e6 5.a3 c5 6.bc5 bc5 7.Nf3 cd4 8.Nd4 Bc5 9.Nb3 Qb6 10.e3= Be3 11.fe3 Qe3 12.Be2 Bg2 13.Bd4 Qf4 14.Rg1 Qh2 15.Nc3 Nc6 16.Bf2 0-0 17.Qd3 Ne5 18.Qe3 Nfg4 19.Qg3 Qg3=+ 20.Bg3 Bf3 21.Nd2 Be2 22.Ke2 f5 23.Be5 Ne5 24.Nb5 Rfc8 25.Rac1 a6 26.Nd6 Rc6 27.c5 Rb8 28.Rg3 Nf7 29.Nf7 Kf7 30.Nc4 Kf6 31.Na5 Rc7 32.Rb3 Rb5 33.Rb5 ab5 34.Nb3 Ke5 35.Kd3 Ra7 36.Ra1 Ra4 37.Kc3 Kf6 38.Rd1 Ke7 39.Kb2 b4 40.ab4–/+ Rb4 41.Kc3 Rb8 42.Nd4 Rc8–+ 43.Kb4 g5 44.Nf3 g4 45.Ne5 Rd8 46.c6 d6 47.Nc4 d5 48.Nb6 Kd6= 49.Kb5?? Rb8 50.Rh1 Rh8= 51.Rd1?? Rb8?? (better is 51...f4–+) ½–½. Sterner,Roland – Ahlstroem,Ronny, corr SSKK 2–57, 1985.

3.e3 c5 4.bc5 bc5 5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d3 Bb7 9.Nbd2 Nc6 10.a3 d5 11.Rb1 Rb8 12.c4 d4 13.ed4 Nd4 14.Nd4 cd4 15.Nf3 Bf3 16.Bf3 e5 17.Qa4 Qc7 18.Ba1 Rb1 19.Rb1 Rb8 20.Rb8 Qb8 21.Qb4 Qb4 22.ab4 Nh5 23.Bh5 gh5 24.b5 Bf8 25.Kf1 Bc5 26.Ke2 f5 27.Bb2 Kf7 28.Bc1 Kf6 29.h4 f4 30.g3 Kf5 31.Kf3 Bd6 32.Bd2 h6 33.Ba5 Bc5 34.Bc7 Bb6 35.Bb8 Bc5 36.Bc7 Bb6 37.Bb6 ab6 38.Kg2 Kg4 39.f3 Kf5 40.Kf2 Ke6 41.g4 Kd6 42.gh5 Kc5 43.Ke2 Kb4 44.Kd2 Kb3 45.c5 bc5 46.b6 c4 47.dc4 Kc4 48.b7 e4 49.fe4 1–0. Phomopsis (1690) – Wannadisko (1665), lichess.org, 2020.

3.e3 Nc6 4.a3 d5 5.Nf3 Ne4 6.c4 Nf2?? (better is 6...dc4 7.Bc4 Nd6+=) 7.Kf2+- Bg4 (7...a6 8.cd5 Qd5 9.Nc3+-) 8.Nc3 (better is 8.Qa4 Qd7 9.cd5 Qd5 10.Nc3+-) 8...Qd6 (8...d4 9.Nd5 Qd6 10.ed4 0-0-0+-) 9.cd5 Rd8 10.dc6 Qf6 11.Be2 Qc6 12.Rf1 h6 13.Kg1 Bf5 14.d4 Rd4 15.ed4 e6 16.Bd3 Be7 17.Bf5 ef5 18.Qe2 f4 19.Rae1 Qd7 20.Ne5 Qd4 21.Kh1 0-0 22.Nc6 Bb4 23.Nd4 Bc3 24.Bc3 g5 25.Nf5 Kh7 26.Bg7 Rd8 27.Rd1 Rd1 28.Rd1 c5 29.Bh6 Kg6 30.Qe4 Kh5 31.g4! fg3 32.Ng3 Kh6 33.Rd6 Kg7 34.Nf5 Kh7 35.Qg4 f6 36.Qh5 Kg8 37.Rd7 c4 38.Qh7 Kf8 39.Qf7 1–0. Fournier,Frederic – COMP 1_EASY, Chess.com (2+1), 2013.

3.Nf3 Ba6 4.a4 (4.Nc3 e6 5.a3 d5=) 4...e6 (4...Bb7 5.a5=) 5.b5 Bb7 6.e3 c6 (6...a6 7.Be2=) 7.Be2 (7.a5 ba5 8.Be2 cb5 9.Bb5 a6=) 7...Bb4 (7...Be7 8.Nc3=) 8.c3 (8.0-0 a6=) 8...Be7 9.d4 (9.0-0 0-0=) 9...Nd5 (9...0-0 10.0-0=) 10.0-0+= c5 (10...0-0 11.c4 Nf6 12.Nc3+=) 11.e4 (11.c4 Nf6+=) 11...Nf4+= 12.Nbd2 Ne2 (12...d5 13.ed5 cd4 14.Nd4 Ne2 15.Qe2 Qd5 16.f3=) 13.Qe2+= cd4 (13...0-0 14.dc5 Bc5 15.Ba3+=) 14.cd4 (14.c4 0-0+=) 14...a6 15.Rfc1 Bf6 (15...d5 16.e5+=) 16.e5 (16.Ba3 d6+/–) 16...Be7 17.Rc2 (17.Ba3 Ba3 18.Ra3 ab5 19.Qb5 Bc6+/–) 17...d6 (17...ab5 18.ab5 Ra1 19.Ba1+=) 18.Rac1 d5 19.Rc7+/– Ra7 20.R1c2 0-0? 21.h3?? Bb4 22.Rc1 h6 23.R7c2 ab5 24.Qb5+= Ba5 25.Nb3?? Ba6–+ 26.Na5 Bb5 27.ab5 Ra5 28.Rc3 Rb5 29.Ba3 Re8 30.Bd6 Na6 31.Ra3 Ra5 32.Rac3 Ra4 33.Rd1 Rc4 34.Ra3 Nc7 35.Rb3 Na6 36.Rdb1?? Rc6–+ 37.Ra3 Qc8 38.Rb2 Qb7 39.Rba2 Nc7 40.Ra7 Qc8 41.Rb2 Rc1 42.Kh2 Rc6 43.Rba2?? Nb5–+ 44.R7a4 Nd6 45.ed6 Rd6 46.Ne5 Qb8 47.g3 b5 48.Rb4 Rc8 49.Rab2 Qa7 50.Kg2 Rb6 51.Nd3 Qb8 52.Nc5 Rc7 53.Ra2 Ra7 54.Rab2 Qd6 55.R4b3 Ra5 0–1. mic (2210) – grahamtrue (2070), net–chess.com, 2008.

3.Nf3 c6 4.c4 Bb7 5.Nc3 e6 6.d4 (6.a3 c5 7.bc5 Bc5+=) 6...Be7 (better is 6...Bb4!? 7.a3 Bc3 8.Bc3 Ne4–/+) 7.a3 d5 8.c5 bc5 9.dc5 (9.bc5 Nbd7=) 9...Qc7+= 10.e3 Nbd7 11.Be2 e5 12.0-0 0-0 13.Qc2 d4?? (better is 13...a5+=) 14.ed4+/– ed4 15.Nd4 Rfe8 16.Bc4 (16.Nf5!?+-) 16...Ne5+/– 17.Bb3 Nd5?? (better is 17...Ba6 18.Rfd1 Rad8+/–) 18.Nd5+- cd5 19.Nf5 (better is 19.c6!? Ng4 20.g3 Ba6+-) 19...Bf6 20.Nd6 Red8 (20...Re6 21.Rfe1 Rd8 22.f4+-) 21.Rfe1 Rd6 (21...Ng4 22.Bf6 Rd6 23.cd6 Qd6 24.Be5 Ne5 25.Rac1+-) 22.cd6 (22.Be5?! Be5 23.Re5 Re6 24.Re6 fe6+-; 22.Re5?! Rd7 23.Re2 d4+-) 22...Qd6 23.Rac1 h6?? (23...Nd3 24.Qd3 Bb2+-) 24.Qc7 Qc7 25.Rc7 Nd3 26.Bf6 (worse is 26.Rb7 Ne1 27.Bf6 gf6 28.Bd5 Rd8+-) 26...Ne1 27.Rb7 (better is 27.Bc3!? Rc8 28.Rc8 Bc8 29.Be1 Be6+-) 27...gf6 28.Bd5 Rd8 29.Bf7 Kf8 30.Kf1 Nc2 31.Ra7 Rd2 (31...Na3 32.Bh5 Nb5 33.Rf7 Kg8 34.Rf6 Rd4+-) 32.Bg6 Nd4 33.g3 Rd1 (33...Nf3 34.Rf7 Kg8 35.Rf6 Nh2 36.Ke1+-) 34.Kg2 Nb5 (34...Ra1 35.a4 Nc6 36.Ra8 Kg7 37.b5+-) 35.Rf7 Kg8 36.Rf6 (better is 36.a4 Nc3 37.a5 Ra1+-) 36...Na3 37.Bh5 Rb1 38.Rb6 (38.Rg6 Kf8 39.Ra6 Nc4+-) 38...Nc4 (38...Kg7 39.Rg6 Kf8 40.Ra6+-) 39.Rb7 (39.Rg6 Kh7 40.Rg4 Ne5+-) 39...Nd6 (39...Kf8+-) 40.Rb6 Nc4 41.Rb8 Kg7 42.Be2 Nd6 43.Rb6 Ne4 (43...Nc8 44.Rc6 Ne7+-) 44.Bd3 (44.Bd3 Re1 45.Re6+-) 1–0. cristero (2310) – kpadfield (2140), net–chess.com, 2015.

3.f4 Bb7 4.Nf3 e6 5.a3 Be7 6.e3 0-0 7.Bd3 Ne4 8.Nc3 f5 9.Rb1 (9.0-0 a5=) 9...Bf6 (9...a5 10.b5=+) 10.0-0= Nc3 11.dc3 Nc6 12.Qd2 Ne7 13.c4 Qe8 (13...Bb2 14.Rb2 a5 15.Be2=) 14.Qe2 (14.Bf6 Rf6 15.c5 bc5 16.bc5 Bd5=) 14...Rd8 (14...a5 15.Bf6 Rf6 16.Nd4=+) 15.e4 (15.Bf6 Rf6 16.e4 fe4 17.Be4 Be4 18.Qe4 Nf5=) 15...fe4 16.Be4 Be4 17.Qe4 Nf5 (17...Bb2 18.Rb2 Ng6 19.Ne5=+) 18.Be5= Be5 19.Ne5 Nd6 20.Qd3 Qh5 (20...Qe7 21.Rf3=) 21.Rf3 (21.c5 bc5 22.bc5 Rf4 23.Rf4 Qe5+-) 21...Qf5 (21...Qe8 22.Rh3 Nf5 23.b5=) 22.Qf5 (22.c5 Qd3 23.Rd3 Nb7+=) 22...Rf5 23.Rd1 Ne4? (better 23...g5!? 24.c5 bc5 25.bc5 Nf7 26.Nf7 Kf7 27.fg5 Kg6 28.Rf5 Kf5+=) 24.g4 (24.Nc6 Rff8 25.Nd8 Rd8+-) 24...Rff8+/- 25.Rd7 (25.Nd7!? Nf6 26.Nf6 gf6 27.Rfd3 Rd3 28.cd3+-) 25...Rd7 26.Nd7 Rd8 (26...Ng5! 27.Nf8 Nf3 28.Kf2 Nh2 29.Ne6 Ng4 30.Kf3 Nh2 31.Ke2 c5+/-) 27.Rd3+- Re8 (27...Nd6 28.Ne5+-) 28.Ne5 Nd6 29.Kg2 Kf8 30.h4 Kg8 (30...Nf7 31.Nf7 Kf7 32.Kf3+-) 31.h5 Re7 (31...a6 32.c5 bc5 33.bc5+-) 32.c5 Ne8 (32...bc5 33.bc5 Nf7 34.Nc6+-) 33.Rd8 1-0. Novikov,E (2275) - Lahav,Michal (2190), Titled Tuesday 3rd Nov, 2020.

3.h3 Bb7 4.g3?? Bh1-+ 5.f3 (5.Nf3 e6 6.a3 a5-+) 5...e5! 6.Kf2 (6.Be5 Nc6 Double attack (6...Bb4 Discovered attack; 6...Nc6 Decoy)) 6...e4 7.d3 (7.a3 c5 8.Nc3 d5-+) 7...ef3 (7...e3 8.Ke3 Nh5 9.Qe1-+) 8.ef3 (8.a3 a5-+) 8...Bb4 9.Qe2 Qe7 (9...Kf8 10.a3 Bc5 11.d4-+) 10.h4 (10.Bf6 gf6 11.c3 Bd6-+) 10...Nc6 11.c3 Bc5 12.d4 Bd6 13.Nh3 Nh5 14.Nd2 Ng3 (better 14...Bg3!? 15.Kg1 Qe2 16.Be2 Bh4 17.Kh2-+) 15.Qe7 Ne7 16.Re1 (16.Nc4 Nf1 17.Rf1 Bf3 18.Nd6 cd6 19.Kf3 Rc8-+) 16...Kf8 (better 16...c6-+) 17.f4 (17.Nc4 Nef5 18.Nd6 cd6 19.Bd3-+) 17...Nf1 18.Kf1 Bb7 19.c4 (19.Kf2 Ng6 20.Kg3 Be7-+) 19...Nf5 20.d5 (20.Bc3 Nh4 21.Re2 Nf5-+) 20...Re8 (better 20...Bb4 21.Bc1 Ba6 22.Kf2-+) 21.Ne4 (21.Re8 Ke8 22.Kf2 Bb4-+) 21...Re4! 22.Re4 Ng3 23.Kg2 Ne4 24.Kf3 f5 (24...Nd2 25.Ke2 Nc4 26.Bc1-+) 25.h5 Rg8 (25...Nd2 26.Ke2 Nc4 27.Bd4-+) 26.Ng5 Ng5 27.fg5 Kf7 (27...Ba6 28.c5 bc5 29.Kf2-+) 28.a4 a6 (28...Ba6 29.c5 bc5 30.Bc3-+) 29.Bd4 b5! 30.ab5 (30.ab5 c6 Double attack (30...c6 Decoy); 30.cb5 c6 Double attack (30...Bd5 Deflection; 30...c6 Decoy)) 30...ab5 31.c5 Bd5 32.Ke3 f4 33.Kd3 Be7 34.Be5 f3 35.Bc7 Bc5 (35...f2 36.Ke2 Bc5 37.g6 hg6 38.Bf4 Bc4 39.Kd2 f1Q 40.hg6 Kg6 41.Kc2 Qd3 42.Kb2 Ba3 43.Ka1 Qd4 44.Kb1 Qb2) 36.Kd2 f2 37.Ke2 Bc4 38.Kf3 (38.Kd1 f1Q 39.Kc2 Qd3 40.Kb2 Qb3 41.Kc1 Be3) 38...f1Q 39.Kg4 (39.Kg3 Qf2 40.Kg4 Be6) 39...Be2 (39...Be6 40.Kg3 Qf2) 40.Kh4 (40.Kg3 Qg1 41.Kh3 Bg4 42.Kh4 Bf2 43.Bg3 Qg3) 40...Bf2 41.Bg3 Qg2 (41...Qh1) 42.g6 hg6 (42...Ke6 43.Bf2 Qg4) 43.hg6 Kg6 44.Bf2 Qg4 (44...Rh8) 0-1. jeimov (1695) - AbelP (2245), Quarantε³ne-Liga 5A Team Battle, lichess.org, 2020.

3.Nh3 d5 4.Nf4+=.

3.Nh3 e6 4.a3= c5 (4...Bb7 5.Nc3+=) 5.b5 (5.bc5 Bc5 6.e3 Bb7=) 5...Bb7 (5...a6 6.e3+=) 6.e3= Be7 7.Be5 (7.Nf4 a6+=) 7...0-0 8.Bd3 (8.Nc3 d6 9.Bg3 a6+=) 8...c4 (8...d6 9.Bb2 Bg2 10.Rg1 Bh3 11.Qf3–/+) 9.Bf1 a6 10.Bc4? (10.Nc3 d6 11.Bg3 d5–/+) 10...Bg2?? (better is 10...d6–+) 11.Rg1–/+ Bh3 (better is 11...d5 12.Rg2 dc4 13.ba6 Nbd7+=) 12.Bf4?? (better is 12.Qf3 ab5 13.Bd3–/+) 12...ab5 (12...d5 13.Bd3 Ne4 14.Be5–+) 13.Bb5 (13.Qf3 Nc6 14.Bd3 Bf5 15.Bf5 ef5–+) 13...Bf5 14.Bh6 (14.Qf3 Ra5 15.Qg2 Nh5–+) 14...Bg6 15.Bg5 (15.Bf4 Nc6–+) 15...Qc7 16.Nc3 Qh2 17.Rf1 Qg2 (worse is 17...Ba3 18.Bf6 gf6 19.Nb1–+) 18.Be2 (18.Bh4–+) 18...Qg5 0–1. cervejarj – pcmvr, net–chess.com, 2017.

(--> 1.b4 b6 2.Bb2 Bb7 3.b5 Nf6).

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

4.e3 Bg7 5.c4 (5.Nc3 0-0=) 5...0-0 6.Qc2 (6.Qf3 c6=) 6...Nh5 (6...a6 7.d4=+) 7.Nc3 (7.Be2 Bb2 8.Qb2 Nf6+=) 7...f5 (7...Bb7 8.Nf3=) 8.Nf3 (8.Be2 a6+=) 8...e5= 9.Be2 (9.d4 ed4 10.Nd4 Bb7=) 9...Bb7 (9...e4 10.Nd4=) 10.0-0 d6 (10...a6 11.d3=) 11.d4+= e4 (11...a6 12.de5 de5 13.Rfd1+/–) 12.Nd2 Nf6 13.d5 (better is 13.f3 ef3 14.Bf3 Bf3 15.Rf3+=) 13...Ng4? (better is 13...a6+=) 14.f3?? (better is 14.Bg4 fg4 15.Nce4 Bb2 16.Qb2+-) 14...Ne3–+ 15.Qb3 Nf1 16.Rf1 ef3 17.Nf3 Nd7 18.Bd3 Ne5 19.Bb1 Nf3 20.Rf3 Qg5 21.Rg3?? Qf4 22.Ne2?? Qh6 23.Bc1 Qh4 24.Nf4 Be5 25.Ne6 Bg3 26.hg3 Qg3?? 27.Qg3+- (27...Bd5 28.Nf8 Rf8 29.cd5+-) 1–0. HeresJhonny – chaser, Caissa.com, 2004.

4.e4+= Bg7 5.e5 Ne4 6.d3 Ng5 7.d4 Bb7 8.h4 Ne6 9.Nf3 (9.h5 a6+=) 9...f5 (9...d6!?=) 10.h5+= g5 (better is 10...a6!?+=) 11.d5+- g4 (better is 11...Nf4!? 12.g3 g4 13.gf4 e6+-) 12.Nh4 (12.de6?! gf3 13.h6 Bf8+/–) 12...Be5 (12...Nf4 13.Nf5 Bf8 14.Qg4 Nd5+-) 13.Be5 Nc5 14.Bh8 e6 15.Bc3 Qg5 16.Qd4 Bd5 17.Qh8 Ke7 18.Nd2 Ne4 19.Ng6! Kd6 20.Qe5 Kc5 21.Nb3 1–0. Baumann,Heinz (2355) – Grand,Thorsten (1785), remoteschach.de, 2003.

4.b5 a4 5.a3 d6 6.Nc3 e5 7.Na4 e4 (7...Be7 8.d4+=) 8.Nc3 Bf5 9.e3 Nbd7 10.d4 ed3 11.Bd3 Bd3 12.Qd3 Be7 13.Nf3 0-0 14.0-0 Nc5 15.Qc2 Re8 16.Rad1 Qc8 17.Nd4 Qg4 18.h3 Qh5 19.Nc6 Bf8 20.Nd5 Nd5 21.Rd5 Qg6 22.Qe2 (22.Qg6 hg6 23.Rfd1 Be7+-) 22...Na4 (22...Be7+/-) 23.Bc1 (better 23.Bd4!?+-) 23...Nc3+= 24.Qf3 (24.Qd3!? Nd5 25.Qg6 hg6 26.cd5=) 24...Nd5=+ 25.Qd5 Qe6 26.Qd3 Ra4 27.Nb4 Rd8 (27...Qe4 28.Rd1=+) 28.Bb2= f6 29.Rc1 d5 (29...Rda8 30.Nd5 R8a7 31.Qc2=) 30.Nd5 Bd6 31.f4 (31.Qb3 Raa8+=) 31...Rda8 32.Rc3 R8a7 33.Kh1 g6 (33...f5!?=) 34.Rb3+= Kf7 35.Nf6 Ba3? (better 35...Qc4 36.Qc4 Rc4 37.Nh7 Be7+/-) 36.Ba3+- (36.Nh7 Be7 37.Qd4 Ra8 38.Qg7 Ke8+-) 36...Qf6 (36...Ra3 37.Ra3 Ra3 38.Qa3 Qf6+-) 37.Qd5 (better 37.Qd7 Kg8 38.Qd5 Kg7 39.Bb2 Qb2 40.Rb2+-) 37...Qe6= 38.Qd3 Rc4 (38...Qc4?? 39.Qd7 Kg8 40.Qe8 Kg7 41.Qf8) 39.Qd8 Rc1?? (39...Qe8 40.Qd5 Qe6 41.Qd8=) 40.Bc1?? (better 40.Kh2 Ra3 41.Ra3+-) 40...Qb3= 41.Qd7 Kf8 42.Qd8 Kg7 43.Qe7 Kh6?? (43...Kg8 44.Qe8 Kg7 45.Qe5 Kf8 46.Bb2=) 44.Qg5 (44.Qf8 Kh5 45.Qf6+-) 44...Kg7= 45.Qe7 Kg8 46.Qe8 Kg7 47.Qe7 ½-½. jhonores (2245) - PapaflesasFICS (2065), Hourly SuperBlitz Arena, lichess.org, 2020.

4.b5 Bb7 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 b6 4.c4 Bb7).

(--> 1.b4 b6 2.Bb2 Bb7 3.c4 Nf6).

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

4.Nc3 Bg7 5.d4 d6 6.Nf3 c5 7.dc5 bc5 8.b5 0-0 9.g3 Be6 10.Qb3 h6 11.Bg2 Nbd7 12.0-0 a6 13.a4 ab5 14.ab5 Ra1 15.Ra1 Nb6 16.Nd2 h5 17.Na4 Na4 18.Ra4 Nd7 19.Bg7 Kg7 20.Qa3 Nb6 21.Ra6 Nc4 22.Nc4 Bc4 23.Qa5 Qa5 24.Ra5 Rb8 25.Bc6 Be2 26.Ra6 Bb5 27.Bb5 Rb5 28.Ra7 Kf6 29.Kf1 d5 30.h4 d4 31.Ke2 c4 32.Rc7 c3 33.Kd3 e5 34.f3 Rb2 35.Ke4 Re2 36.Kd3 Rg2 37.Rc6 Kg7 38.Ke4 f6 39.Rc7 Kh6 40.Rc6 Rg3 41.Rf6 c2 42.Rc6 Rg2 43.Kd3 Rf2 44.Rc2 Rf3 45.Ke4 Re3 46.Kd5 Rh3 47.Re2 Rh4 48.Re5 d3 49.Re1 d2 50.Rd1 Rh2 51.Kd4 h4 52.Kd3 g5 53.Rd2 Rd2 54.Kd2 g4 55.Ke2 Kg5 56.Kf2 Kf4 57.Kg2 Ke3 0–1. kannisogoet – willow4, kurnik, 2012.

4.Bf6 ef6 5.a3 Bg7 6.d3 0-0 7.Nd2 d5 8.Rc1 Bb7 9.Ngf3 dc4 10.Rc4 Nd7 11.e3 c5 12.bc5 Nc5 13.d4 Ba6? (13...Ne4 14.Ne4 Be4 15.Bd3=) 14.Rc3 (14.dc5 Bc4 15.Bc4 bc5+/–) 14...f5 15.Rc1 (15.Ba6!? Na6 16.Qa4+=) 15...Nd3 16.Bd3 Bd3 17.Qb3 Ba6 18.Nc4 Bb7 19.Ncd2 Ba6 20.Nc4 Bb7 21.Qd1 f4 22.0-0 Bh6 23.Qd2 fe3 24.fe3 Re8 25.Nfe5 f6 (25...f6 26.Ng4 Bg7=) 0–1. lican – lmi, kurnik, 2012.

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

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

4.b5 d6 5.d4 e6 6.Nf3 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.d4 d6).

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

4.Nf3 a5 5.b5 (--> 1.b4 a5 2.b5 b6 3.Bb2 Bb7 4.e3 Nf6 5.Nf3).

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

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

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

4.Nf3 e6 5.a3 Be7 6.Be2 0-0 7.0-0 c5 8.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c5 8.b5).

4.Nc3 e5 5.Nf3 Ng4 (5...Be7 6.Be2=) 6.Bc4 e4 7.Ne4 (better is 7.Bb3!? Bb7 8.Nd4+=) 7...d5=+ 8.h3 de4 9.hg4 ef3?? (better is 9...Bg4!? 10.Bf7 Ke7=) 10.Bf7 Kf7 11.Qf3 Ke8 12.Qa8 Bg4?? 13.Qe4+- Be7 14.Qg4 Qd7 15.Qg7 Rf8 16.Rh7 Kd8 17.a3 Qf5 18.Qe7 Kc8 19.Qc7 1–0. Madsen,D (1835) – Moltu,Lars Christian, Politiken Cup, Helsingor DEN, 2009.

4.Nf3 Bb7 5.Be2 h6 6.0-0 Ba6 7.Ba6 Na6 8.a3 Nb8 9.b5 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.c4 Nc5 14.d4 Ne6 15.Nc3 g6 16.Bb2 Bg7 17.Qc2 0-0 18.Ra1 g5 19.h3 Nd7 20.Ne4 Qc8 21.Ng3 Nf6 22.Nf5 c6 23.Ng7 Kg7 24.bc6 d5 25.cd5 Nd5 26.e4 Ndf4 27.d5 Kg8 28.de6 fe6 29.Qc3 Rf6 30.Bc1 Ne2 31.Kh2 Nc3 0–1. mihai740609 (1605) – tutix11, kurnik, 2012.

4.Nf3 Nc6 5.b5 Ne5 6.Ne5 de5 7.Be5 Bb7 8.Bf6 ef6 9.d3 Bd6 10.Nd2 a6 11.c4 ab5 12.cb5 c5 13.bc6 Bc6 14.Qg4 0-0 15.Ne4 Be4 16.Qe4 Re8 17.Qf3 Bb4 18.Ke2 Ra3 19.d4 Qd7 20.g3 Qb5 21.Kd1 Qa4 22.Ke2 Qc2 0–1. Phomopsis (1740) – rezo2015 (1765), lichess.org, 2020.

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

4.a3 Bb7 5.Nf3 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.c4 d5 5.Qb3 (5.Nf3 Bd6=) 5...dc4 6.Bc4 Bb7 7.Nf3 Nbd7 8.d4 Be7 9.Nc3 0-0 10.0-0 Rc8 (10...Bf3 11.gf3 c5 12.bc5 bc5 13.Rad1=+) 11.a3 a6 (11...Bf3 12.gf3 c6 13.Rfc1=) 12.Rab1 (12.Be2 Bd6=) 12...b5 13.Bd3 (13.Be2 Bd6=) 13...Nb6 (13...Bf3!? 14.gf3 c5 15.bc5 Nc5 16.Bh7 Kh7 17.dc5 Qd3-/+) 14.Rfc1 (14.e4 Nh5+=) 14...Nbd5 (better 14...Bf3 15.gf3 Bd6=) 15.g3?? (better 15.Ne5+=) 15...Nc3-+ 16.Bc3 Bf3 17.Bb2 Bd5 (17...Qd7 18.Ra1-+) 18.Qc2 h6 19.Qe2 (19.e4 Bb7 20.f3-+) 19...Bd6 (19...Ne4 20.f3 Nd6 21.e4-+) 20.Rc2? (20.e4 Ba8 21.e5 Be7 22.ef6 Bf6-/+) 20...Qe7?? (20...Be4 21.Be4 Ne4 22.Qd3-+) 21.Rbc1? (better 21.e4-/+) 21...Ne4-+ 22.f3 Ng5 (22...f5!? 23.fe4 fe4 24.Bb5 ab5 25.Qb5-+) 23.e4 Ba8 24.h4 (24.f4 Bf4! 25.gf4 Nh3 26.Kf1 Nf4-+) 24...Ne4! 25.fe4 (25.Be4 Be4 Combination; 25.fe4 Bg3 Combination) 25...e5?? (better 25...Bg3 26.h5 Bf4-+) 26.d5=+ Qf6 (26...f5 27.Qg2=+) 27.Kg2 Qg6 28.Rf1 Be7 (better 28...f5=+) 29.Bc1?? (better 29.Be5 Bh4 30.Qf3+=) 29...Bh4-+ 30.Rf3 (30.Qf3 c6-+) 30...Bf6 (30...c6 31.Bb2-+) 31.Qf1 (better 31.Be3-+) 31...c5?? (better 31...c6 32.Qe1 Be7-+) 32.bc5= Bg5 (32...Be7 33.c6=) 33.Bg5 Qg5 34.c6 f6 (34...Qg6 35.a4+=) 35.Rf5 (35.Qf2 Qg4 36.Qa7 Rb8+/-) 35...Qg6 (35...Qe3 36.a4 ba4 37.Qe2+=) 36.Be2 (36.a4 ba4 37.Ba6 Rc7+/-) 36...a5? (36...Qe8!?+=) 37.Bh5 (37.Bb5 Kh7+-) 37...Qh7 38.Qf3 (38.Bg4 Qg6 39.Bh3 b4+/-) 38...b4 (38...g6 39.Qg4 Kg7 40.Rf3+/-) 39.Qg4 ba3?? (better 39...Kh8+/-) 40.Bg6+- Qh8 (40...Qg6 41.Qg6 Rb8+-) 41.Qe2 (better 41.Re5! f5 42.Rf5+-) 41...Rfd8 (41...Rc7 42.d6 Rcf7 43.d7+-) 42.Ra2 (better 42.Qa6 a2 43.d6+-) 42...Kf8 (42...Rd6 43.Qe3 Rdd8 44.Qa7+-) 43.Ra3 (43.Qe3 Ke7 44.Qc5 Rd6 45.Qa7 Kd8 46.Qa5 Ke7 47.Qa7 Kd8 48.Qa3 Rd7 49.cd7 Kd7 50.Qa4 Kd8 51.Qa5 Ke7 52.Qb4 Kd7 53.Ra7 Rc7 54.Re5 Ra7 55.Bf5 Kc7 56.Re7 Kd8 57.Qd6 Rd7 58.Qd7) 43...Qg8? (better 43...Bc6 44.dc6 Qg8+-) 44.Ra5 Bc6 45.dc6 (better 45.Qb2!? Rd6+-) 45...Qb3 (45...Qe6 46.Rae5 Qc6 47.Ra5+-) 46.Ra2 (46.Rf3 Qb4 47.Rd5 Ra8+-) 46...Qb6? (46...Rc6 47.Rf3 Rc3 48.Rc3 Qc3 49.Bf5+-) 47.Qf2 (better 47.Qc4!? Rc7 48.Rc2 Qd4+-) 47...Qf2 48.Raf2 (48.Rff2 Rc6 49.Ra7 Rcd6+-) 48…Rc6 (48...Rc6 49.Re5 Rc7+-). ClayPigeons (2135) - bngsudheer (2180), Rated Bullet game, lichess.org, 2020.

4.Nf3 Bb4 5.Nc3 Bb7 6.Nb5 a6 7.Bf6 gf6 8.c3 Be7 9.Nbd4 c5 10.Nc2 Nc6 11.Be2 Qc7 12.d4 Rg8 13.0-0 cd4 14.cd4 0-0-0 (better is 14...f5!?–/+) 15.Rc1= Kb8 16.a3 b5 17.a4 Qb6 Black prepares the advance b4 (17...b4!?+=) 18.ab5+/– ab5 19.Rb1 b4 20.Na3 Qa5 21.Nc4 (21.Nb5 Rg7+/–) 21...Qh5 22.g3 Qg6 23.d5 ed5 24.Qd5 Ne5 25.Qb5 Nc4 26.Qc4 Qe4 27.Qe4?? (better is 27.Qb5+/–) 27...Be4–/+ 28.Rb2 f5 29.Nd4 (29.Ne5 f4=) 29...Rc8 (29...f4!?–/+) 30.f3= Bb7 31.Nf5 Bc5 32.Kg2 Rg6 33.Rd1 Rc7 34.Nd4 Bd5 (better is 34...Rb6=) 35.Nb5+/– Bc6 36.Nc7 Kc7 37.e4 Rd6 38.Rd6 Kd6 39.Bc4 f5 40.ef5 Ke5 41.g4 Kd4 42.Bg8 Kc3 43.Rb3 (better is 43.Re2!? h6 44.f6+-) 43...Kc2+/– 44.f6 d5 45.Rb4 Bb4 46.Bh7 Kd2 (46...Kc3!? 47.h4 d4=) 47.g5+= Bc3 48.h4 Be8? (better is 48...Ke3 49.Kg3 d4+=) 49.Bg8+- d4 (49...Bh5 50.Bd5 Ke3 51.Kg3+-) 50.f7 Bf7 51.Bf7 Ke3 52.g6 (better is 52.Bc4!? Kf4 53.g6 d3 54.Bd3 Bf6+-) 52...d3 53.h5 Bg7 54.Kg3 1–0. tflk (1765) – nextdoor, gameknot.com, 2014.

4.Nf3 Bb4 5.Be2 Nc6 6.0-0 0-0 7.a3 Be7 8.c4 Bb7 9.d4 d5 10.Nc3 Na5 11.cd5 Nd5 12.Nd5 Bd5 13.Rc1 Rc8 14.Ne5 Bf6 15.f4 (15.Ba6 Be5 16.de5 Qg5-/+) 15...c5 16.Bf3 (16.Ba6 Rc7-/+) 16...cd4 (16...Be5 17.de5 Bf3 18.Qf3-+) 17.Rc8 Qc8 18.ed4 (18.Ng4 Qd8-/+) 18...Nc4 19.Bc1 (19.Bd5 ed5 20.Rf2 b5-+) 19...Ne5 (19...Rd8 20.Bh5 g6 21.Be2-+) 20.de5 (20.fe5 Bf3 21.Qf3 Be7-/+) 20...Bf3 21.Qf3 Be7 22.f5 (22.h3!?-/+) 22...Bc5 23.Kh1 ef5 24.Qf5 (24.Bb2 Rd8-+) 24...Qf5 25.Rf5 Rd8 26.Rf1 a5 27.Bf4 (27.g4 b5-+) 27...Rd3 28.h4 (28.Bc1 b5-+) 28...Ra3 29.Rd1 (29.h5 a4-+) 29...h5 30.Rd8 Kh7 31.Rd7 Kg6 32.e6 (32.Kh2 a4-+) 32...fe6 33.Be5 Kf5 34.Bg7 (34.Bb2 Rg3 35.Rf7 Ke4-+) 34...Rg3 (34...Ra4 35.g3 Kg4 36.Rd3-+) 35.Bf8 (35.Bh6 b5-+) 35...Bf8 36.Rf7 Kg4 37.Rf8 Kh4 38.Rf6 (38.Re8 Re3-+) 38...Rb3 (better 38...Re3-+) 39.Rf4 (39.Re6 a4 40.Kg1-+) 39...Kg3 40.Rf3 Rf3 41.gf3 Kf3 42.Kh2 b5 43.Kh3 b4 44.Kh4 b3 45.Kh5 b2 46.Kg6 b1Q 47.Kf6 Qg1 48.Ke6 a4 49.Kf5 (49.Kf6 a3 50.Ke7 Qe3 51.Kd6 a2 52.Kc6 a1Q 53.Kb5 Qd3 54.Kb6 Qaa6 55.Kc5 Qad6) 49...a3 50.Kf6 (50.Ke5 Qb6 51.Kf5 a2 52.Kg5 Qd8 53.Kf5 a1Q 54.Kg6 Qaf6 55.Kh5 Qd5) 50...a2 51.Kf5 (51.Ke6 Qe3 52.Kd6 a1Q 53.Kc6 Qa6 54.Kc7 Qab6 55.Kd7 Qee6) 51…a1Q (51...a1Q 52.Ke6 Qb6 53.Ke7 Qaf6 54.Kd7 Qfe6) 0-1. Gehaktbalmetjus (2120) - danhammer1989 (2205), Rated Bullet game, lichess.org, 2020.

4.Nf3 d5 5.a3 c5 6.bc5 Bc5 7.Be2 0-0 8.c4 dc4 9.Bc4 Ba6 10.Qe2 Bc4 11.Qc4 Nc6 12.d4 Na5 13.Qc3 Be7 14.Nbd2 Rc8 15.Qd3 Nd5 16.0-0 Bf6 17.e4 Nf4 18.Qe3 Ng6 19.Rac1 Qd7 20.Nb3 Nb3 21.Qb3 Nf4 22.Qe3 Rc1 23.Rc1 Ng6 24.g3 Qb5 25.Qd2 Be7 26.d5 ed5 27.ed5 Rd8 28.Rd1 Bc5 29.Nd4 Bd4 30.Qd4 f6 31.d6 Ne5 32.Kg2 Qc6 33.Kh3 g5 34.Qd5 Kg7 35.Qc6 1–0. Chess4Win (1680) – aalov (1690), lichess.org, 2019.

4.Qf3 Nc6 5.b5 Nb4 6.Na3 Rb8 7.c3 Nbd5 8.c4 Nb4 9.Bc3 e5 10.Be5 Be7 11.Qg3 0-0 12.Bc7 Ne4 13.Bd8 Ng3 14.Be7 Nh1 15.Bf8 Kf8 16.g3 d5 17.Bg2 Nf2 18.Kf2 dc4 19.Nc4 Be6 20.Ne5 Rc8 21.Nc6 1–0. chocobom – roosa, kurnik, 2012.

4.Nf3 d6 5.b5 Bb7 6.c4 Bg7 7.a4 0-0 8.Be2 Nbd7 9.0-0 Nc5 10.d4 Ncd7 11.d5 Re8 12.Nbd2 e6 13.e4 ed5 14.ed5 Ne4 15.Bg7 Kg7 16.Ne4 Re4 17.Bd3 Re8 18.Re1 Nc5 19.Bc2 Qf6 20.Ra3 Rab8 21.Rae3 Re3 22.Re3 Kf8 23.g3 Re8 24.Re8 Ke8 25.Qe1 Kf8 26.Nh4 Qe7 27.Qc3 Kg8 28.Kg2 Ne4 29.Be4 Qe4 30.Nf3 a6 31.h4 ab5 32.ab5 Bc8 33.Qe3 Qe3 34.fe3 Bf5 35.Nd2 Kg7 36.Kf3 Kf6 37.g4 Bc2 38.e4 Ke5 39.h5 g5 40.h6 1–0. riditko – mumuszkaa, kurnik, 2012.

4.f4 d6 5.Nf3 c6 6.Be2 Nbd7 7.0-0 d5 8.c4 e6 9.Ne5 Bb7 10.g4 Ne5 (< 10...Bb4 11.g5 Rg8 12.gf6 dc4 13.Nd7 Qd7 14.Bc4+-) 11.fe5 Nd7 12.Qe1 Bg7 13.d4 0-0 14.Nd2 c5 15.b5 a6 16.a4 a5 17.h4 f6 18.Nf3 (18.cd5 A) < 18...fe5 19.de6 Rf1 20.Bf1+/– (< 20.Kf1 Qf6 21.Kg1 Qe6=); B) 18...Bd5 19.e4 Bb7=) 18...dc4 19.Bc4 Qe7 20.Qg3 fe5 21.Ne5 Ne5 22.de5 Rf1 23.Rf1 Rf8 24.Rd1 Rf3 25.Qh2 Re3 26.Rd6? Bc8 27.Qf4 Re1 28.Kf2 Rc1?? 29.Bc1+- (29.Qc1?! Qh4 30.Ke2 Qg4 31.Ke1 Qg1 32.Bf1 Qg3 33.Kd1 Bf8 34.Rb6 Bb7+-) 1–0. elsh1403 – jarekgalik, kurnik, 2011.

4.f4 Bg7 5.Nf3 0-0 6.Be2 d6 7.0-0 e6 8.c4 Nc6 9.Qb3 Rb8 10.b5 Ne7 11.a4 Bb7 12.Nc3 c6 13.Rad1 d5 14.d4 Ne4 15.Ne4 de4 16.Ng5 c5? (better is 16...Rc8+=) 17.dc5+- bc5 (17...Qc7 18.Bg7 Kg7 19.Qb2 Kg8+-) 18.Rd8 Rbd8 1–0. elsh1403 – toni003, kurnik, 2012.

4.f4 Bg7 5.Nf3 Bb7 6.Be2 e6 7.0-0 Qe7 8.a3 Nc6 9.b5 Na5 10.a4 0-0-0 11.c4 d6 12.d4 e5 13.fe5 de5 14.Ne5 Nh5 (14...c5 15.Bf3+/–) 15.Bh5 (15.Rf7!? Qg5 16.Ng4 Rhf8 17.Rf8 Rf8+-) 15...gh5+/– 16.Qh5 (16.Nf7 Qe3 17.Kh1 Rhg8=+) 16...f6 17.Ng4 (17.Ba3 Qe8 18.Qf5 Kb8=) 17...f5? (better is 17...Nc4 18.Bc3 Qe4+= (18...Ne3? 19.Re1+-)) 18.Qf5+- Kb8 19.Nc3 Bc8 20.Nd5 (better is 20.Qf7 Qg5 21.Nf2+/–) 20...Qd6? (20...Bf5 21.Ne7 Bg4=) 21.Qh5?? Nc4= 22.Bc3? Rhg8?? 23.e4?? Bg4–/+ 24.Qg4?? Bd4!–+ 25.Kh1 Rg4 26.Bd4 Re4 27.Bf6 Qd5 28.Bd8 Qd8 29.Rad1 Nd6 30.h3 Ra4 31.Rf3 Ra5 32.Rb3 Qf6 33.Re1 Qf5 34.Rf3 Qb5 35.Rf8 Kb7 36.Re7 Qb1 37.Kh2 Ra2 38.Rg8 Qb2 39.Rgg7 Nf5 40.Rc7 Ka6 41.Rg4 Qe5 42.Kg1 Qc7 43.h4 Qc1 44.Kh2 Qc7 45.Kg1 Ra1 46.Kf2 Qc2 47.Kf3 (47.Kf3 Rf1#) 0–1. elsh1403 – wsamrazdomata, kurnik, 2011.

4.h3 Bg7 5.a3 Bb7 6.Nf3 e6 7.Be2 d6 8.0-0 Nbd7 9.Nh2 Ne5 10.d4 Ned7 11.g4 (11.Nf3!?=) 11...Ne4 12.c3 (12.Bf3 h5–/+) 12...c5 13.Bf3 Rb8 14.dc5 bc5 15.Nd2 Nd2 (15...Nc3?! 16.Bc3 Bc3 17.Bb7 Rb7 18.Ne4=) 16.Qd2 Bf3 17.Nf3 cb4 18.ab4 0-0 (18...Qc7 19.Rfc1=) 19.Ra7 d5 20.Rfa1 Nb6 21.Ba3 Nc4 22.Qc2 Na3 23.R1a3+= Qc8 24.Nd4 Bd4 25.ed4 Qc6 26.R7a6 Qc4 27.Ra7 Rfc8 28.Kg2 Rc6? 29.Ra8 Rbc8 30.Rc8 Rc8 31.f4 Kg7 32.h4 h6 33.f5 gf5 34.gf5 ef5 35.Qf5+/– Qe2 36.Qf2 Qe4 37.Qf3 Qh4 38.Qd5 Qg5?? 39.Qg5+- hg5 40.Kf3 f6 41.Kg4 Kg6 42.d5 f5+/– 43.Kg3 f4 (43...f4 44.Kg4 Kf6 45.Ra6 Ke5=) 0–1. cogit – fisniktolaj, kurnik, 2012.

4.h3 Bg7 5.c4 d6 6.a4 e5 7.Nf3 Be6 8.Be2 Nbd7 9.0-0 0-0 10.Nc3 Kh8 11.d3 Ng8 12.Ne4 Ndf6 13.Nf6 Nf6 14.d4 Nd7 15.de5 Ne5 16.Ne5 de5 17.Bf3 Rb8 18.Qc2 f5 19.Rad1 Qe7 20.Bc6 Qb4 21.Rc1 Qc5 22.Bf3 e4 23.Be2 Bb2 24.Qb2 Kg8 25.Rc2 Rfd8 26.Rfc1 a5 27.g3 Rd6 28.Kg2 Rbd8 29.Qb5 Rd2 30.Qc5 bc5 31.h4 Rc2 32.Rc2 Rb8 33.Rd2 Rb4 34.Rd8 Kg7 35.Ra8 Ra4 36.Ra7 Bc4 37.Rc7 Kh6 38.Bd1 Ra1 39.Bc2 Bd3 40.Bd3 ed3 41.Rc5 d2 42.Rd5 d1Q 43.Rd1 Rd1 44.Kf3 a4 45.Ke2 Rd8 46.f3 a3 47.e4 a2 48.ef5 gf5 49.g4 fg4 50.fg4 a1Q 51.g5 Kh5 52.Kf3 Qa4 53.Kg3 Rb8 54.g6 hg6 55.Kf3 Rb3 56.Ke2 Qa2 57.Kd1 Rb1# 0–1. riditko – willow4, kurnik, 2012.

4.h3 Bg7 5.c4 Nh5 6.Bg7 Ng7 7.Nc3 e6 8.a4 c6 9.Nf3 0-0 10.Be2 Na6 11.b5 Nb4 12.0-0 d5 13.cd5 cd5 14.Qb3 a5 15.Ne5 Qd6 16.d4 f6 17.Nd3 Nd3 18.Bd3 e5 19.de5 Qe5 20.Ne2 Bb7 21.Nf4 g5 22.Ne2 Ne6 23.Ng3 d4 24.ed4 Qd5 25.Qc2 Qg2# 0–1. riditko – quinbb, kurnik, 2012.

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

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

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

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

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

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

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

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

4.b5 Bb7 5.e3 c5 6.c4 d5 7.Be2 Nbd7 8.0-0 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 b6 8.0-0 Bb7).

4.b5 Bb7 5.e3 c6 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d3 c5 (9...dc4 10.dc4 a6 11.Qc2=) 10.Nbd2 Qc7 (10...a6 11.ba6 Na6 12.Qb3=) 11.a4 (11.Be5 Qd7=) 11...Ng4 (11...a6 12.Be5 Qd8 13.ba6 Na6 14.Qb3=) 12.h3+= Bf6 13.d4 Nh6 14.Rc1 (14.cd5 Bd5 15.Bd3 Rc8+=) 14...Rc8 (14...a6 15.a5 ab5 16.ab6=) 15.cd5 Bd5 16.Bd3 (16.a5 a6 17.ab6 Qb6 18.dc5 Rc5 19.Bf6 gf6+/–) 16...Qd7 (16...Nd7 17.e4 Bb7 18.e5+=) 17.Ne4 (17.Qc2 Kh8+/–) 17...Be7 18.dc5 (18.Nc3 Bb7+/–) 18...Bc5 (18...bc5!? 19.Ned2 a6+/–) 19.Nc5+/– bc5 20.Ba3 (20.e4 Bb7+/–) 20...Qc7? (better is 20...Qe7+/–) 21.Rc5+- (21.Rc5 Qd8 22.Bh7 Kh8 23.Rc8 Qc8 24.Bb1+-; 21.Bc5?! Qb7+-) 1–0. Bonetti,Shane – comanchee, ICC, 2002.

4.d3 e6 5.a3 Bg7 6.e4 Nh5 7.e5 d6 8.d4 de5 9.Ne5 Be5 10.de5 Qd1 11.Kd1 0-0 12.Be2 Ng7 13.Bf3 c6 14.Nd2 Bb7 15.Ke2 Nd7 16.c4 c5?? (16...Rad8 17.b5 Nb8 18.Ne4+-) 17.Ne4 (better is 17.Bb7 Rad8 18.Rhd1+-) 17...Rad8+/– 18.Nd6 Bf3= 19.Kf3 Nf5 20.g4 Nh4?? 21.Ke4 f5= 22.gf5 ef5? 23.Ke3 f4 24.Ke4 Nb8 25.Kd5 Nf5 26.bc5 bc5 27.Kc5 Nd6 28.ed6 Nd7 29.Kd5?? Nb6–/+ 30.Kc6 Rc8 31.Kb7 Rf7 32.Ka6 Nc4 33.Bd4? Nd6?? 34.Rac1–/+ Re8 35.Rhe1 Ref8 36.Bc5 Rd8 37.Rcd1 Rf6 38.Ka7 Rd7–/+ 39.Kb6? Nf5?? 40.Kb5 Rb7 41.Kc4 Rc7 42.Rd8 Kg7 43.Red1 Kh6 44.R8d7 Rd7 45.Rd7 Ra6 46.Kb5 Ra8 47.a4 Rb8 48.Bb6 Rc8 49.a5 Re8 50.a6 Ne7 51.a7 Nf5?? 52.Rb7 Re5?? 53.Ka6 Nd6 54.a8Q Nb7 55.Qb7 Re1 56.Qf3 Ra1 57.Kb7 Rb1 58.Qf4 Kg7 59.Kc6 Kg8 60.Bd4 Rb4 61.Qe5 Rd4 62.Qd4 Kf7 63.Qe5 h6 64.Kd6 g5 65.Qe6 Kg7 66.Ke5 h5 67.Kf5 g4 68.Qf6 Kg8 69.Kg6 h4 70.Qg7 (70.Qd8) 1–0. bratek55 (1615) – ochrona, kurnik, 2011.

4.d3 Bg7 5.Nbd2 Bb7 6.g3 a6 7.Bg2 Nc6 8.a3 d6 9.0-0 Rb8 10.c4 0-0 11.Nb3 e6 12.b5 ab5 13.cb5 Ne7 14.a4 d5 15.a5 ba5 16.Na5 Ba8 17.Qa4 Nd7 18.Nd4 Nc5 19.Qa3 Qd6 20.Bc3 Nf5 21.Bb4?? Bd4–+ 22.e3 Ba1 23.Bc5 Qd7 24.Bf8 Rf8 25.Ra1 Qc8 26.Rc1 Qb8 27.Qa4 Nd6 28.Rb1 Qb6 29.Bf1 Nb7 30.Ra1 Na5 31.Qa5 Qa5 32.Ra5 Rb8 33.d4 Kf8 34.Ra7 c6 35.bc6 Bc6 36.Rc7 Be8 37.Kg2 Kg7 38.h4 h5 39.Be2 Rb2 40.Ba6 Ba4 41.Bc8 Kf6 42.Ra7 Bc2 43.Bd7 Be4 44.Kf1 Rb1 45.Ke2 Rb2 46.Ke1 Bf3 47.Be8 Rb1 48.Kd2 Kf5 49.Rf7 Ke4 50.Re7 Kf5+- 51.Bf7 Rb6 52.Re8 Kf6 53.Bg8 Kg7 54.Rb8?? Rb8–+ 55.Be6 Kf6 56.Bh3 Rb2 57.Ke1 Rb1 58.Kd2 g5 59.hg5 Kg5 60.Be6 h4 61.gh4 Kh4 62.Bf5 Rb2 63.Ke1 Ra2 64.Be6 Kg5 65.Bd7 Kf6 66.Bh3 Ke7 67.Bf5 Kd6 68.Bg6 Kc6 69.Bf5 Kb5 70.Bg6 Kc4 71.Bf5 Kc3 72.Bg6 Ra1 73.Bb1 Rb1# 0–1. linakip – 23anetka400, kurnik, 2012.

4.d3 Bg7 5.Nbd2 Bb7 6.g3 c5 7.bc5 bc5 8.Bg2 0-0 9.0-0 d5 10.c4 dc4 11.Nc4 Nc6 12.Bc3 a5 13.Qc2 Nd5 14.Bg7 Kg7 15.a3 Kg8 16.Qb2 Ba6 17.Rac1 Rb8 18.Qa1 Nd4 19.Nd4 cd4 20.Qd4 e6 21.Qa1 Bc4 22.dc4 Nf6 23.Qc3 Qe7 24.c5 Nd5 25.Qc4 Nc7 26.c6 Qa3 27.Rc3 Qb4 28.Qd3 Rfd8 29.Rb1?? Qb1–+ 30.Qb1 Rb1 31.Bf1 Rdd1 32.Kg2 Rf1 33.Kf3 Rbc1 34.Ra3 Ra1 35.Rb3 Rfc1 36.Rb8 Kg7 37.e3 Rc6 38.Rb7 Nd5 39.Rb5 a4 40.Ra5 a3 41.h4 a2 42.g4 Rc2 43.e4 Nc3 44.Ra3 Nb5 45.Ra5 Rc3 46.Kg2 Nd4 47.Ra4 Rd3 48.h5–+ gh5 49.gh5 Rd2 50.Kg3 Rad1 51.Kf4 a1Q 52.Ra1 Ra1 (52...Ra1 53.Kg4 Rg1 54.Kh3 Rf2 55.h6 Kg6 56.e5 Rf5 57.Kh2 Nf3 58.Kh3 Rh5#) 0–1. linakip – johnik79, kurnik, 2012.

4.d3 Bg7 5.e4 Bb7 6.e5 Ng4 7.d4 0-0 8.h3 Nf2? (better is 8...Nh6=) 9.Kf2+- Nc6 10.b5 Nb4 11.Nbd2 e6? 12.a3 Nd5 13.g3 c6 14.a4 cb5 15.ab5 d6 16.Bg2 de5 17.Ne5 Qe7? 18.Re1 Qb4 19.Nb3 Rfc8 20.Re2 h5? 21.h4 Qe7 22.Kg1+- Nf6? 23.Rf2 Bg2 24.Kg2 Ne4 25.Rf7 Qe8 26.Raa7 Ra7 27.Ra7 Qb5 28.Ng6 Rf8 29.Nf8 Bf8 30.Qf3 Nd6 31.Qh5 Qh5–+ 32.Ba3 Qe2 33.Kh3 Qc2 34.Bd6 Bd6 35.Rd7 Bg3 36.Kg3 Qb3 37.Kf4 Qd1 38.Ke5 b5 39.Ke6 Qg4 40.Kd6 b4 41.Rd8 Kf7 42.Kc5 b3 43.Rb8 Qh4 44.Rb3 Qe4 45.Rb6 Ke7 46.Ra6 Qc2 47.Kb5 Qd3 48.Kb6 Qd4 49.Kb5 Qd5 50.Kb4 Kd7 51.Ra5 Qd4 52.Kb3 Kc6 53.Ra4 Qd3 54.Kb2 Kb5 55.Ra3 Qd2 56.Kb3 (56.Kb3–+) 0–1. bratek55 (1655) – kecaj13, kurnik, 2011.

4.d3 Bg7 5.e4 Nh5 6.Bg7 Ng7 7.Be2 Bb7 8.0-0 0-0 9.c4 e6 10.Nbd2 c6 11.Qb3 d5 12.ed5 cd5 13.Ne5 dc4 14.Ndc4 Nd7 15.Bf3 Bf3 16.Nf3 Nf6 17.Rfd1 Nd5 18.g3 Nf5 19.Nce5 Qd6 20.a3 Rac8 21.Nc4 Qc7 22.Nfe5?? (22.b5 Qb7 23.Nfe5 Nc7=+) 22...Kg7?? 23.Qb2 Nf6?? 24.Ng4?? Qe7 25.Nce3 Ne3 26.fe3 h5 27.Nf2 Qb7? 28.Ne4+- Qe7? 29.Rf1 e5 30.Nf6 Qf6 31.Rf6 Kf6 32.Rf1 Ke6 33.Qb3 Ke7 34.Qd5 f6 35.d4 Rcd8 36.Qc4 ed4 37.ed4 Rd7 38.Re1 Kd8 39.d5 Rff7 40.Qc6 g5 41.Qa8 Kc7 42.Qa7 Kd6 43.Qb6 Kd5 44.Rd1 Ke4 45.Rd7 Rd7+- 46.Qf6 Rd1 47.Kf2 Rd2 48.Ke1 Rd5 49.Qc6 Kd4 50.b5 Re5 51.Kd2 h4 52.b6 hg3 53.hg3 Rf5 54.b7 Rf2 55.Ke1 Rb2 56.Qd6 Kc3 57.Qf6 Kb3 58.Qb2! Kb2 59.b8Q Ka3 (59...Ka3 60.Kd2 Ka4 61.Qb6 g4 62.Kc3 Ka3 63.Qb3#; 59...Kc3 60.a4 Kd4 61.a5 Kc5 62.a6 Kd4 63.a7 Kc5 64.Qd8 Kc6 65.a8Q Kc5 66.Qad5 Kb4 67.Q8a5#) 0–1. bratek55 (1615) – cihei247b (1650), kurnik, 2012.

4.a3 a5 5.b5 Be7 6.e4 0-0 7.Nf3 d5 8.Bd3 Bb7 9.Nc3 de4 10.Be4 Be4 11.Ne4 f5 12.Nc3 Re8 (better is 12...Ba3!? 13.Ne2 Bb2–/+) 13.0-0= Nd7 14.Nd5 Bd6 15.c4 Nf6 16.Qc2 g6 17.Rfe1 (better is 17.Nf6!? Qf6 18.d4+=) 17...Nd5 18.Re8 Qe8 19.cd5 Qb5 20.Qd3?? (20.Qc6 Qc6 21.dc6 b5–/+) 20...Qa4 (better is 20...Qd3 21.a4 b5 22.ab5 a4–+) 21.g3 Qe4 22.Qe4 fe4 23.Nh4 f5 24.Kf1 Rd8 25.Ke2 Bc5 26.a4 Rd5 27.Ng2 Bb4 28.Rd1 c5 29.Nf4 Rd6 30.h3 c4 31.g4 c3 32.d3?? c2 33.Rc1 ed3 34.Nd3 fg4 35.hg4 Rc6 36.f4 Ba3 37.Rh1 Rc4 38.Kd2 c1Q! 39.Nc1 Bc1 40.Rc1 Ra4 41.Ke3 Kg7 42.Rc7–/+ Kf6 43.Rc6 Ke7 44.Rb6 Ra3 45.Ke4 a4 46.Rb7 Kd6 47.Rh7 Rb3 48.Rh6 a3 49.Rg6 Kc5 50.Ra6 Kc4? 51.f5+- Kc3? 52.f6 Kb2 53.f7 Rb4 54.Kf5 Rb8 55.g5 a2 56.g6 a1Q 57.Ra1 Ka1 58.g7 Rb5 59.Kg6 Rb6 60.Kh7 (60.Kh7 Rf6 61.f8Q Rf8 62.gf8Q+- (62.gf8N?! Ka2=; 62.gf8B?! Ka2=)) 1–0. lucjanjawor – ariank, kurnik, 2012.

4.a3 Bb7 5.Nf3 Be7 6.d4 0-0 7.e3 a5 8.b5 c6 9.c4 cb5 10.cb5 d6 11.Bd3 Nd7 12.Qc2 g6 13.Nc3 Bf3 14.gf3 Re8 15.Be4 Bf8? 16.Ba8+- Qa8 17.e4 Rc8 18.Qd3 Bh6 19.Nd5 Re8 20.Nc7 Qb8 21.Ne8 Qe8 22.h4 Bf4 23.h5 Nf8 24.hg6 fg6 25.Ra2 Ne6 26.Rc2 Qd7 27.Qc4 Kg7 28.Qc6 Qc6 29.Rc6 Nd4 30.Rc7 Kg8 31.Rhh7 f5 32.Rcg7 Kf8 33.Rb7 Kg8 34.Rhg7 Kh8 35.Rge7 (35...Nc2 36.Kd1 Ne3 37.fe3 Bh6 38.Re8 Bf8 39.Rf8) 1–0. pcmvr – JFRAY, ChessWorld.net, 2002.

4.a3 g6 5.d3 Bb7 6.e4 Bg7 7.c3 Nc6 8.Nf3 Nb8 9.Be2 Na6 10.0-0 Nb8 11.Nbd2 Bf8 12.Rc1 Bd6 13.d4 Bf4 14.Bd3 Qe7 15.Re1 Kf8 16.g3 Bd6?? (better is 16...Bh6+/–) 17.e5+- Be5 18.de5 (18.Ne5?! fe5 19.Re5 Qf6+/–) 18...Qd8 (18...Kg7 19.c4+-) 19.Be4 Qc8 20.ef6 (20.ef6 d5 21.Bd3+-) 1–0. lican – juniox, kurnik, 2012.

4.c3 d5 5.d4 g5 6.e3= h5 7.Nd2 f5 8.Bd3 Nc6 9.Ne2+/– Ne7 10.Qc2 h4 11.h3 Qd6 12.a3 Bg7 13.Rc1 Bd7 14.c4 c6 15.c5 Qf6 16.a4 Rb8 17.b5 Rc8 18.Qb1 Rb8 19.Nf3 Ng6 20.Qa2 Bh6 21.bc6+/– Bc6 22.Bb5 g4 23.Nd2 g3 24.f4 Rd8 25.Nf3 0-0 1–0. Roczniak,Jan – Domagalski, corr (year?).

4.e3 Bb4 5.Nf3 Bb7 6.Be2 0-0 7.0-0 Qe7 8.d4 c5 9.c3 Ba5 10.Qb3 d5 11.Nbd2 c4 12.Qc2 Nc6 13.a4 Qd6 14.h3 Rae8 15.Nh2 a6 16.Ndf3 b5 17.ab5 ab5 18.Ra2 b4 19.cb4 Bb4 20.Rb1 Rb8 21.Ra4 Bc8 22.Rba1 Bd7 23.Ra6 Bc8 24.R6a4 Bd7 25.Ra6 Rfc8 26.Rb1 Qe7 27.Ra4 Rb5 28.Raa1 Rcb8 29.Rb2 Na5 30.Rab1 Nb3 31.Bd1 Bd6 32.Qe2 Bh2 33.Nh2 Qe4 34.Bc2 Qc2 35.Qc2 Na5 0–1. joaquimbage – ridoku, kurnik, 2012.

4.Nf3 a6 5.Bg2 e6 6.a3 d5 7.0-0 c5 8.bc5 Bc5 9.e3 0-0 10.d3 Nbd7 11.Nbd2 Rc8 12.Rc1 Bd6 13.c4 Qe7 14.cd5 Nd5 (worse is 14...Bd5 15.e4 Ba3 16.Rc8 Rc8 17.Bf6 Nf6 18.ed5 Nd5 19.Qa4+=; 14...ed5?! 15.Rc8 Rc8 16.Qa1=; worse is 14...Ba3 15.Ba3 Qa3 16.Rc8 Rc8 17.de6 fe6 18.d4=) 15.Nc4 Bb8 16.Qe2 b5 17.Na5 Ba8 18.Nd4 Bd6 19.Ndb3 (better is 19.e4 N5b6 20.Ndc6=) 19...Ba3–/+ 20.Ba3 Qa3 21.Ra1 Qd6 22.e4 Nc3 23.Qd2 b4 24.Nc4 Rc4 25.dc4= Qd2 26.Nd2 Rd8 27.Ra6+/– Nc5 28.Raa1 Bb7 29.Rfe1?? h6?? 30.Bf3?? Rd2–+ 31.Kg2 Nd3 32.Re3 Ne5 33.Ra7 Be4 34.Be4+= Ne4 35.Re4= Nd3 36.Ra8 Kh7 37.Kh3?? Nf2–+ 38.Kh4 Ne4 39.Kh3 b3 40.Rb8 b2 41.Kg4–+ Nc3 42.Kf4 b1Q 43.Rb1 Nb1 44.Ke3 Rd8 45.c5 Na3 46.c6 Nb5 47.Ke4 Nc7 48.h4 f6 49.g4 Kg6 50.Kf4 e5 51.Ke4 h5 52.gh5 Kh5 53.Kf5 Kh4 54.Kg6 e4 55.Kg7 e3 56.Kf6 e2 57.Ke7 e1Q 58.Kd8 Qd2 59.Kc7–+ Qc3 60.Kd6 Qd4 61.Kc7 Qc5 62.Kd7 Qd5 63.Kc7 Qg8 64.Kb6 Qc8 65.c7 Kg5 66.Kc6 Kf5 67.Kd6 Ke4 68.Kc6 Ke5 69.Kc5 Ke6 70.Kc6 Qc7 71.Kc7= ½–½. diablo005 – pioneter48, kurnik, 2012.

4.Nf3 d6 5.Bg2 e5 6.d3 Nbd7 7.c4 h6 8.Nbd2 Be7 9.Nh4 (better is 9.0-0=) 9...g6?? (better is 9...Bg2 10.Ng2 d5 11.cd5 Bb4=) 10.Bb7+- Rb8 11.Bg2 Ng4 (11...b5 12.a3+-) 12.e3 h5 13.0-0 (13.Nhf3!? b5+-) 13...Bh4 14.gh4 Qh4 15.Nf3 Qf6 16.h3 Nh6 17.Kh2 g5 18.d4 g4 19.de5 Ne5? 20.Ne5 de5 21.Bc6 Kf8?? 22.Bg2 gh3 23.Bh3?? Ng4+= 24.Bg4?? hg4–/+ 25.Kg3?? Qh4 26.Kg2 Qh2# 0–1. diablo005 – potaatti, kurnik, 2012.

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

4.Nf3 g6 5.Bg2 Bg7 6.d3 0-0 7.Nbd2 d5 8.0-0 e6 9.Qc1 Nbd7 10.c4 c5 11.b5 d4 12.Re1 a6 13.a4 a5 14.e3 Nh5 15.e4 f5 16.Nh4 f4 17.g4 Qh4 18.gh5 Qh5 19.Qd1 Qg5 20.Qf3 Nf6 21.Kh1 e5 22.Rg1 Qg4 23.Bh3 Qf3 24.Nf3 Nh5 25.Ng5 Bc8 26.f3 Bh6 27.Ne6 Be6 28.Be6 Kg7 29.Rg2 Nf6 30.Rag1 Kh8 31.Bc1 Rae8 32.Bh3 g5 33.Bd2 Rg8 34.Bf5 Rg7 35.Be1 Nh5 36.Bg4 Nf6 37.Bf5 Nh5 38.Bf2 Rf7 39.h4 Ng3 40.Bg3 fg3 41.Rg3 gh4 42.Rg4 Be3 43.R1g2 h3 44.Rh2 Rg8 45.Rh3 Rg4 46.Bg4 Rg7 47.Rh5 (47.Rh5 Bg5 48.Kg2=+). linakip – drezdenko, kurnik, 2011.

3.a3 d6 4.e3 Nc6 5.b5 Ne5 6.Be5 de5 7.c4 (7.Bc4 e4=) 7...b6 8.Nc3 Bb7 9.Nf3 Qc7 10.Be2 e6 11.0-0 (11.d3 Bd6=) 11...e4=+ 12.Ne1 Rd8 (12...Bd6 13.h3=+) 13.Qc2 Be7 14.Rd1 0-0 15.d3 ed3 16.Nd3 Rd7 17.Nf4 (17.f4 Bd6=) 17...Rfd8 18.Rd7 Rd7 19.Rd1 h6 (19...Rd1 20.Qd1 Qe5 21.Qc2=+) 20.Rd7= Qd7 21.Qd3 Qd3 22.Nd3 Nd7 23.f4 Bf6 24.Nd1 e5 (24...a6 25.ba6 Ba6 26.N3f2=+) 25.g3 (better 25.Bg4 Nf8 26.fe5+/-) 25...e4 26.N3f2 g6 27.Ng4 (27.Bg4 Nf8=+) 27...Bg7 28.h4 f5 29.Ngf2 h5 30.Kf1 a6 31.Ke1 ab5 32.cb5 Nf8 (32...Bd5 33.Kd2=+) 33.Kd2 Ne6 34.Kc2 Kf7 35.a4 Ke7 36.Nc3 Nc7 37.Nfd1 Nd5 38.Nd5 Bd5 39.Nc3 Bb7 (39...Be6 40.Nd1=+) 40.Bc4= Bc3 41.Kc3 Kf6? (better 41...Bc8!?=) 42.Bg8 Kg7 (better 42...Ke7 43.a5 ba5+/-) 43.Kc4?? (better 43.Bb3+-) 43...Kf6 (better 43...Kg8 44.a5 ba5 45.Kc5 Kf7-+) 44.Bd5 (44.a5 ba5 45.Kc5 Bc8+-) 44...Bc8?? (44...Bd5 45.Kd5 Ke7 46.Kc4=+) 45.Bc6?? (better 45.a5 ba5 46.Kc5+-) 45...Be6= 46.Bd5 Bd7?? (46...Bd5 47.Kd5 Ke7 48.Ke5=) 47.Bc6?? (better 47.a5 ba5 48.b6+-) 47...Be6 48.Bd5 Bd7?? (better 48...Bd5 49.Kd5 Ke7=) 49.Bc6?? (better 49.a5 ba5 50.b6+-) 49…Be8 (49...Be8 50.Be8 Ke6+-). Gehaktbalmetjus (2080) - Valentine_T (2010), Rated Bullet game, lichess.org, 2020.

3.b5 Qa5 4.c4 d6 5.Bc3 Qc7 6.d3 Bf5 7.g3 Nbd7 8.Bg2 Ne5 9.Nd2 g6 10.Nh3 Bh6 11.0-0 a6 12.a4 0-0 13.Nf3 Nf3 14.ef3 Rab8 15.g4 Be6 16.Bd2 Bg7 17.Nf4 Bd7 18.Rb1 ab5 19.ab5 b6 20.g5 Ne8 21.Nd5 Qc8 22.Ne7 Kh8 23.Nc8 Bc8 24.Re1 Nc7 25.Bf4 Ne6 26.Bd6 Ra8 27.Bf8 Nf8 28.f4 Bd4 29.Ba8 Ne6 30.Re6 Be6 31.Qe2 Kg7 32.Qe4 h6 33.gh6 Kh6 34.Qf3 g5 35.f5 Bd7 36.Qh3 Kg7 37.Be4 Kf6 38.Kg2 Ke7 39.Qh6 f6 40.Qg7 Kd6 41.Qf7 g4 42.Qd5 Kc7 43.Qb7 Kd8 44.Bc6 Bc6 45.bc6 1–0. ArgosZgZ – vegeta7, lichess.org, 2018.

3.b5 a6 4.c4 d5 5.e3 dc4 6.Bc4 e6 7.a4 Bd6 8.Nf3 0-0 9.0-0 Ne4 10.Nc3 Ng5 11.d4 Nf3 12.Qf3 cd4 13.ed4 ab5 14.ab5 Nd7 15.Ra8 Nf6 16.Ne4 Ne4 17.Qe4 Qc7 18.Be2 Bh2 19.Kh1 Bd6 20.Ba3 Ba3 21.Ra3 Bd7 22.Raa1 f5 23.Qe3 Rf6 24.f4 Rh6 25.Kg1 Bc6 26.bc6 Qc6 27.Bf3 Qd7 28.Rf2 1–0. axtur777 – Courageous_Dragon, lichess.org, 2019.

3.b5 d5 4.e3 Ne4 5.Nf3 f6 6.Nh4 Be6 7.c4 dc4 8.Na3 c3 9.Bc3 Nc3 10.dc3 Qd1 11.Kd1 Nd7 12.Bd3 0-0-0 13.Ke2 Nb6 14.Bf5 Bf5 15.Nf5 e6 16.Ng3 c4 17.Nb1 Na4 18.Rd1 Be7 19.Rd4 Rd4 20.cd4 Kc7 21.Ne4 a6 22.Nbc3 Nc3 23.Nc3 Bb4 24.Ne4 ab5 25.Rb1 Ba3 26.Rb5 Ra8 27.Nc3 Kc6 28.Kd2 Ra6 29.e4 Bd6 30.a4 b6 31.Ke3 e5 32.d5 Kd7 33.a5 Ra5 34.Ra5 ba5 35.Na4 Kc7 36.Nb2 Bc5 37.Kd2 Kb6 38.Nc4 Kb5 39.Ne3 a4 40.Kc3 h5 41.h3 Bd4 42.Kc2 Be3 43.fe3 h4 44.Kb2 g6 45.Ka3 f5 46.ef5 gf5 47.d6 Kc6 48.Ka4 Kd6 49.Kb4 Kd5 50.Kc3 Ke4 51.Kd2 f4 52.ef4 Kf4 53.Ke2 Kg3 54.Kf1 e4 55.Kg1 e3 56.Kf1 Kf4 0–1. Cwiertnia – Martyniak, corr Poland.

3.b5 e6 4.c4 Be7 5.e3 d5 6.Nf3 0-0 7.d4 b6 8.Be2 Bb7 9.0-0 (--> 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).

3.b5 g6 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 c5).

3.c3 cb4 4.cb4 g6 5.b5 Bg7 6.a4 0-0 7.e3 d5 8.Nc3 Nbd7 (8...e5 9.Rc1=+) 9.Nf3= Nb6 10.Be2 (10.d3 a5=) 10...Be6 (10...Nc4 11.Qb3=) 11.0-0 (11.d3 a5=) 11...Nc4 12.Nd4?? (better 12.Qb3=) 12...Nb2-+ 13.Qb3 Nc4 14.Ne6 fe6 15.Bc4 dc4 16.Qc4 Rc8 (16...Qd6 17.Rac1-+) 17.Qb3? (better 17.Qe6 Kh8 18.Ra2-/+) 17...Qd2-+ 18.Rac1 (18.Qe6 Kh8 19.Nb1 Qb4-+) 18...Nd5 19.Na2 Rc1 20.Rc1 (20.Nc1 Bh6 21.Qd3 Be3 22.Qd2 Bd2 23.Nb3-+) 20...Qf2 21.Kh1 Qf1! (21...Qf1 22.Rf1 Rf1) 0-1. Jimito100 (2005) - GomesJr (2030), Rated Bullet game, lichess.org, 2020.

3.c3 d5 4.bc5= e5 5.d4 e4 (5...Be7 6.de5 Ne4 7.e3=) 6.e3 Nc6 (6...b6 7.c4+=) 7.c4 Bg4 8.Be2 Be2 9.Qe2 (9.Ne2 dc4 10.Qa4 Be7+=) 9...Qa5 (9...Nb4!? 10.cd5 Nd3 11.Kf1 Qd5=) 10.Bc3+= Qc7 11.cd5 Nd5 12.Bb2 (12.Nh3 Rd8+=) 12...Ncb4= 13.a3 (13.Nc3 Nd3 14.Kf1 Nc3 15.Bc3 Rd8+=) 13...Nd3=+ 14.Kf1 a6 15.Nh3 (15.Nc3 Nc3 16.Bc3 b6+=) 15...g6 (15...b6!? 16.Nc3 Nc3 17.Bc3 bc5+=) 16.Nc3+= Nf6? (better 16...Nc3 17.Bc3 Bg7+/-) 17.Ne4!+- Nb2?? (17...Ne4 18.Qd3 Remove defender) 18.Qd3 (better 18.Nf6 Kd8 19.Qb2+-) 18...Nd3-+ 19.Nf6 Kd8 20.Nf4 (20.Nd5 Qc6 21.Nb6-+) 20...Nf4 21.ef4 Qf4 22.Nd5 Qd4 23.Nb6 Qa1 (23...Bc5 24.Ke2 Re8 25.Kf3 Bd6 26.Na8 Qe4) 24.Ke2-+ Qh1 0-1. Jimito100 (2040) - sb_362 (2110), Rated Bullet game, lichess.org, 2020.

3.bc5 Qa5 4.Ba3 Nc6 5.c3 g6 (5...e5!?=) 6.Nf3 Bg7 7.e3 Ne4 8.Qc2 (8.d4 Nc3 9.Qd2 Ne4 10.Qa5 Na5+=) 8...Nc5= 9.Bc5 Qc5 10.Be2 d6 (10...d5 11.d4 Qd6 12.0-0=) 11.0-0 Bf5 (11...0-0 12.d4 Qa5 13.Nbd2=) 12.e4 (12.Qb3 Rb8=) 12...Be6 13.d4 (better 13.Rd1 Rc8 14.Qa4=) 13...Qa5?? (better 13...Bd4 14.Nd4 Nd4 15.Qa4 Nc6–/+) 14.d5+- Nb4? (14...Bd5!? 15.ed5 Qd5+-) 15.Qb3 (15.cb4 Qb4 16.a3 Qa5+-) 15...Bd7 16.Nbd2 (better 16.cb4!? Qa4 17.Qa4 Ba4+-) 16...Na6+- 17.Qb7 Rb8? (better 17...Nc7 18.Nc4 Qc5+-) 18.Qa6 Qa6 19.Ba6 Bc3 20.Rad1 (20.Rac1 Bb4+-) 20...Rd8 (20...e6 21.Nc4 Ke7 22.e5 Be5 23.Nce5 de5 24.Ne5 ed5 25.Nd7 Kd7 26.Rd5 Kc6 27.Rfd1+-) 21.Rc1 Bb2 (21...Ba5 22.Nc4 Bb6 23.Nb6 ab6 24.Rb1+-) 22.Rc2 (22.Rc7!? Ra8 23.Bb7 Rd8+-) 22...Ba3 23.Rb1 f5 (23...Bc5 24.Ne5 0-0 25.Nc6+- (worse 25.Nd7 Rd7 26.Nb3 Rb8+-)) 24.Bb5 (24.Nd4 fe4 25.Nc6 Kf7 26.Nd8 Rd8 27.Ne4 Bf5+-) 24...fe4 (24...Bb5 25.Rb5 Bc5 26.ef5 gf5 27.Ng5+-) 25.Bd7 Rd7 26.Rb8 (better 26.Rc8 Rd8 27.Rd8 Kd8 28.Rb8 Kd7 29.Rh8 ef3 30.Nf3 h5+-) 26...Rd8 27.Rd8 Kd8 28.Ne4 Kd7 29.Neg5 h6 (29...Rb8 30.Kf1+-) 30.Ne6 Rb8 The mate threat is Rb1 31.Kf1 (better 31.Rc7 Ke8 32.h4+-) 31...Rb5 (31...Ke8 32.Rc7 a5 33.Nfd4+-) 32.Nc7 (32.Rc7 Ke8 33.Rc8 Kd7 34.Rd8) 32...Rb1 (32...Rb7 33.Na6 e6 34.de6 Ke6 35.Ke2+-) 33.Ke2 Bc5 34.Ne6 Bb6 (34...g5 35.h4 gh4 36.Nh4+-) 35.Nfd4 (better 35.Nf8 Ke8 36.Ng6 Rb4+-) 35...Rb4 (35...g5 36.Nf5+-) 36.Kd3 (36.Nc6!? Re4 37.Kf3 Re6 38.Nb8 Ke8 39.de6 Kf8+-) 36...Rb1 (36...Ra4+-) 37.Nf4 (better 37.Nf8 Ke8 38.Rc8 Kf7 39.Nfe6+-) 37...Rd1+- 38.Rd2 Rd2 39.Kd2 Bd4 40.Ng6 Bf2 41.Kd3 (41.Nf8 Kd8 42.Ne6 Kd7 43.g4+-) 41...e6? (41...e5+=) 42.de6?? (better 42.Nf8 Ke7 43.Ne6+-) 42...Ke6= 43.Nf4 (43.g4 d5=) 43...Ke5 44.Ne2 d5 45.Ng3?? (better 45.g3=+) 45...Bg3–+ 46.hg3 d4 47.g4 a5 48.g3 a4 49.Kd2 Ke4 50.g5 (50.Ke2 d3 51.Kd2 a3–+) 50...hg5 51.g4 a3 52.Kd1 (52.Ke2–+) 52...Ke3 53.Ke1 d3 54.Kd1 Kd4 (54...d2 55.Kc2 Ke2 56.Kb3 d1Q 57.Kc4–+) 55.Kd2 Kc4 56.Kc1 (56.Kd1–+) 56…Kc3 (56...Kc3 57.Kd1 d2–+) 0–1. aravind555 (1615) – oriantes, lichess.org, 2019.

3.bc5 d5 4.cd6 Qd6 5.e3 g6 6.Nf3 Bg7 7.Be2 0-0 8.0-0 Nc6 9.c3 (9.d4 Rd8+/-) 9...Bf5 (9...Rd8 10.d4+=) 10.d4+/- Rac8 11.a4 Na5 12.Nbd2 Rfd8 13.Ne5 Ne4 14.Ba3 (14.Nec4 Nc4 15.Nc4 Qe6+=) 14...Nc3 15.Bd6 Nd1 16.Be7 (worse 16.Rad1 ed6 17.Nef3 d5=) 16...Re8? (16...Nc3 17.Bf3 Be5 18.Bd8 Rd8+/-) 17.Bb4+- (17.Rad1?! Re7 18.f4 f6+/-; 17.Rfd1?! Re7 18.f4 f6+/-; 17.Bd1?! Re7 18.Nef3 Rec7+/-) 17...Ne3 (17...Nc3 18.Bf3 b6 19.Rfc1 Be5 20.Rc3 (20.de5?! Na4 21.Rc8 Rc8+/-) 20...Rc3 21.Bc3+-) 18.fe3 (18.Ba5?! Nf1 19.Kf1 Be5 20.de5 Re5+=) 18...Nc6? (18...Be5 19.de5 Nc6+-) 19.Nc6 bc6 (19...Rc6 20.Kf2 Rf6+-) 20.Bf3 (20.Kf2 Rb8 21.Bc5 Bh6+-) 20...c5?? (better 20...Re3 21.Bc5 Rd3+-) 21.Bc5+- Rc5 (21...Re3 22.Ba7 Rd3 23.Rf2+-) 22.dc5 Ba1 23.Ra1 Re3 24.Nc4 (better 24.c6 Rc3+-) 24...Rc3 25.Bd5 (better 25.Nd6 Rc5 26.Rd1+-) 25...Kg7? (25...Be6 26.Be6 fe6+-) 26.Rf1 (better 26.c6 Rd3 27.Bf3 Kf6+-) 26...h5 (26...Be6 27.Be6 fe6 28.Rf4+-) 27.Rd1 (better 27.Rf5!? gf5 28.c6 Rd3+-) 27...h4 (27...Bd7 28.Rd4 Ba4 29.c6+-) 28.c6 h3 29.gh3 Rc2 (29...Bh3 30.Rb1+-) 30.c7 Bc8 (30...Bh3 31.Re1+-) 31.Rd2 (31.Re1 Kf8+-) 31...Rc3 (31...Rd2 32.Nd2 Kf6 33.Nc4+-) 32.Kf2 (32.Re2 Rc1 33.Kf2 Kf8+-) 32...Rc1 (32...Kf8 33.Re2 Ba6 34.h4+-) 33.Kg2 (better 33.Re2 Bh3 34.Re7+-) 33...Rf1 (33...Rc3+-) 34.Kf1 Bh3 35.Kf2 Bc8 36.Ke3 (better 36.Nd6 Bg4 37.Kg3 Bd7+-) 36...Bd7 37.Kd4 (better 37.Bb7 Be6 38.Ne5 f5+-) 37...Bc8 38.Kc5 (38.Kc5 Kh7 39.Nd6+-) 1-0. ClayPigeons (2155) - donquijote82 (2110), Rated Bullet game, lichess.org, 2021.

3.bc5 e6 (--> 1.b4 e6 2.Bb2 c5 3.bc5 Nf6).

3.bc5 g6 4.d4 Bg7 5.e3 0-0 6.Nf3 b6 7.cb6 Qb6 8.Qc1 Nc6 9.c3 Ba6 10.Ba6 Qa6 11.Qd2 (11.c4 Nb4 12.0-0 Nd3=) 11...Ne4 (11...Rab8 12.Bc1=) 12.Qc2 Rab8 13.Nbd2 d5 (13...Nd2!? 14.Nd2 Rfc8=) 14.Ne4+= de4 15.Nd2 f5 16.Rb1 (better 16.Nb3!?+/-) 16...Qa2=+ 17.0-0 (17.h4 Rfc8 18.Ke2 e5-+) 17...Kh8 (better 17...Rb7 18.Qc1 Rfb8-/+) 18.Ba1?? (better 18.Qc1=) 18...Qc2-+ 19.Nc4 (19.Rbd1-+) 19…Rb1 (19...Rb1 20.f3 Rf1 21.Kf1 Qa2-+) 0-1. Jimito100 (2045) - VARAD45 (2165), Rated Bullet game, lichess.org, 2020.

3.Bf6 ef6 4.a3 (4.bc5!? Bc5 5.d4 Qa5 6.c3=) 4...cb4=+ 5.c4 (5.ab4 Bb4 6.c3 Bc5=+) 5...bc3 (5...ba3 6.Na3 Nc6 7.e3–/+) 6.Nc3 Nc6 7.e3 Be7 8.Bb5 0-0 9.Bc6 (9.Nf3 d5–/+) 9...bc6 (9...dc6 10.d4–/+) 10.Nf3–/+ d5 11.0-0 Bg4 12.h3 (12.h3 Bh5 13.d4–/+). MARYMARY – Disgruntled_Sheep, ChessWorld.net, 2013.

4.ab4 a5 5.ba5 Ra5 6.Ra5 Qa5=.

4.ab4 a5 5.b5 b6 6.e3 Bb7 7.Nf3 g6 (7...e6 8.Be2=) 8.Be2 Bg7 9.0-0 0-0 10.d4 Nh5 11.c4 d5 12.Qb3 dc4 13.Bc4 (13.Qc4 Qd6+=) 13...Bf3= 14.gf3 Qd7 (14...e6 15.Rc1=) 15.Nd2 Qh3 16.Kh1 Nd7 17.Rg1 Ndf6 18.Ne4?? (better 18.Ra4=) 18...Qf3-+ 19.Rg2 Qe4 (19...Ne4 20.Kg1-+) 20.Rf1 (20.Ba3 a4 21.Qa2 Ra7-+) 20...Qf3 21.Qd1 (21.Ba3 Ra7-+) 21...Qb7 (better 21...Qd1!? 22.Rd1 Rfc8 23.Be2-+) 22.Be2 Rac8 23.f4 e6 24.h3 (24.Bf3 Nd5-+) 24...Rfd8 (better 24...Ng3! 25.Kg1 Nf1 26.Qf1-+) 25.Kh2 Ne4 (better 25...Nd5 26.Qd3 Nb4-+) 26.Bh5 gh5 27.Qh5? (better 27.Rfg1!? f6 28.Rg7 Qg7 29.Rg7 Kg7 30.Qg1 Kf7 31.Qg2-+) 27...Nf6 (27...Kh8 28.f5 Rg8 29.fe6 fe6 30.Rfg1-+) 28.Qg5 (28.Qh4 Ne8 29.d5 f6 (29...Qd5?! 30.Bg7 Ng7 31.Qf6=; worse 29...ed5 30.Bg7 Ng7 31.Qf6+=; 29...Rd5 30.Bg7 Ng7 31.Rfg1-+) 30.Bf6 Rd5 (30...Nf6?! 31.Qf6 Kh8 32.Qe6-+) 31.Bg7 Ng7-+) 28...Ne8 29.d5 (29.f5 Rd5 30.Qg4 ef5 31.Rf5 Rf5 32.Qf5 Kh8-+) 29...Qd5 (better 29...Rd5 30.Qh4 f5 31.Rfg1-+) 30.Bg7 Rc2?? (30...Qg5 31.Rg5 Rd2 32.Kh1 Ng7 33.Rfg1-+) 31.Bf6 (better 31.Be5 Kf8 32.Qh6 (worse 32.Rc2 Qd3 33.Rff2 Rd5+-) 32...Ke7 33.Qh4 f6 34.Qh7 Kf8 35.Rc2+-) 31...Kf8?? (better 31...Qg5 32.fg5 Rg2 33.Kg2 Nf6 34.gf6 Rd5-+) 32.Qh6 (32.Qg8) 32...Ng7 33.Qg7 Ke8 34.Qg8 (34.Qg8 Kd7 35.Qd8) 1-0. Gehaktbalmetjus (2030) - andresus16 (2025), Rated Bullet game, lichess.org, 2019.

4.ab4 a5 5.e3 b6 6.Nf3 Bb7 7.ba5 Ra5 8.Ra5 ba5 9.Be2 e6 10.0-0 Be7 11.Ba3 0-0 12.Be7 Qe7 13.Nc3 Nc6 14.Qa1 Rc8 15.Rb1 d5 16.Rb6 (16.d4+=) 16...Nb4 (better 16...Ne4!?=) 17.Qa5+/- Nc2? (better 17...Nc6 18.Qb5 Nd8+/-) 18.Qa7+- Ne3 (18...Qd8 19.Rb7 Ra8+-) 19.fe3 Qc5 (19...Ra8 20.Qb7 (20.Rb7?! Ra7 21.Re7 Re7+=) 20...Ra1 21.Bf1+-) 20.Rb7 Ng4 (20...Qa7 21.Ra7 h6 22.Ne5+-) 21.Rf7 (better 21.Qc5 Rf8 22.Ng5+-) 21...Ne3 (21...Qa7 22.Ra7 h6+-) 22.Rg7 Kf8 (22...Kh8 23.Rh7 Kg8 24.Qg7) 23.Qf7 1-0. Gehaktbalmetjus (2060) - BabyFatMcGeeSex (2165), Rated Bullet game, lichess.org, 2019.

4.ab4 Nc6 5.b5+= Na5 6.e3 b6 7.Bc3 Nb7 8.Be2 d5 9.Bf3 (9.Nf3 e6+=) 9...e6= 10.Ne2 Be7 11.d3 (11.Nd4 Bd7=) 11...0-0 12.Nd2 Nd6 13.0-0 (13.Rb1 Bd7=) 13...Nb5 14.Bf6 Bf6 15.d4 Bd7 16.Qb1 (16.c4 Nc7=+) 16...Qc7 (16...Rc8 17.Qa2-/+) 17.Rc1? (better 17.c4!? dc4 18.Ba8 Ra8 19.Rc1=) 17...Nc3-/+ 18.Nc3 Qc3 19.Nb3 (19.Nf1 Rfc8-+) 19...Rfc8 20.Ra3 Be7 21.Qa1?? (better 21.Ra2-+) 21...Ba3 22.Qc3 (22.Qa3 a5 23.Qa2-+) 22...Rc3 23.Ra1 Bb2 (23...Bb4!? 24.Ra2-+) 24.Rb1 (24.Ra2 Rc2 25.Bd1 Rc1 26.Nc1 Bc1-+) 24...Rc2 25.Bd1 Rc3 (better 25...Rac8 26.Bc2 Rc2 27.Na1-+) 26.Rb2 Ba4 27.Rc2 (27.Kf1-+) 27...Rc2 28.Bc2 Rc8 29.Bd1 (29.Bd3 Bb3 30.f4 a5-+) 29...Bb3 30.Bb3 Rc1 31.Bd1 Rd1 0-1. Gehaktbalmetjus (2060) - Jonnyx (2120), Rated Bullet game, lichess.org, 2020.

4.ab4 e5 5.b5 Bc5 6.e3 d5 (6...d6!?=) 7.Be5+/- Bg4? (7...Nbd7 8.Bf4+/-) 8.Be2 (better 8.Bf6 Qf6 9.Qg4 Be3 10.fe3 (10.de3?! Qa1 11.Qd1 a5+-) 10...Qa1 11.Qc8 Ke7 12.Qh8 (12.Qb7?! Nd7=) 12...Qb1 13.Ke2 Qb5 14.Kf2+-) 8...Be2 9.Ne2 (worse 9.Ke2 Nbd7 10.Bf6 Nf6+=) 9...Nbd7 10.Bf6 Nf6 11.0-0 0-0 12.d4 Bd6 13.Nd2 Bh2?? (better 13...Qc7 14.h3 a6+=) 14.Kh2+- Ng4 (14...Qd7 15.Qb1+-) 15.Kg3 (15.Kg1 Nf6+-) 15...Qg5 (15...Nf6+-) 16.f4 (16.Nf3 Qf5+-) 16...Qg6?? (better 16...Qf5 17.e4! de4+/-) 17.Kf3 (better 17.f5 Qg5 18.Nf3 Qf5 19.Ne5+-) 17...Rae8 18.Ra3 Qh5?? (better 18...Nh2 19.Kf2 Ng4 20.Kg1 Ne3 21.Re3 Re3=) 19.Kg3?? (19.Rh1 Ne5 20.Kf2 Ng4 21.Kg3 Qg6+-) 19...f5?? (better 19...Re3 20.Re3 Ne3-+) 20.Rh1+- Qg6 21.Kf3 Re7 22.Nf1 Rfe8 23.Neg3 Qe6 24.Qd3 (24.Ra7?? Qe3!? 25.Ne3 Re3) 24...g6 25.c4 (better 25.Rh3+-) 25...dc4+/- 26.Qc3 Qd5 27.e4 fe4?? (27...Re4 28.Ne4 g5=+) 28.Ke2 (better 28.Kg4 e3 29.Ne2 (worse 29.Ra7 e2 30.Nd2 Qe6 31.Kh4 e1Q 32.Re1 Qe1+-) 29...Qg2 30.Nfg3 h5 31.Kg5 Qd5 32.Kh4+-) 28...e3=+ 29.Rg1 (29.Ra7?? Qg2 30.Kd1 e2 31.Ne2 Re2-+) 29...Nf2 30.Ra4 (better 30.b6 ab6 31.f5-/+) 30...Ne4?? (better 30...Nd3 31.Qc4 Nf4 32.Kd1 e2 33.Ne2 Qc4 34.Rc4 Re2-+) 31.Ne4+- Re4 32.Qc4 Qc4 33.Rc4 Rd4?? (better 33...Rf4 34.Ne3 Rfe4+-) 34.Ne3 (34.Rd4 a6+-) 34...h5 (better 34...Rc4 35.Kf3 Rc3-+) 35.Rc3 (better 35.Rd4 a6+-) 35...Re3?? (better 35...Rf4 36.Ra1 Rb4+-) 36.Ke3 Rd8 (36...Rd7 37.Ra1 b6 38.Rc8 Kf7 39.Ra8+-) 37.g3 (better 37.Rc7 a6+-) 37...h4 (37...a6 38.Rc7 Re8 39.Kf3 ab5 40.Rd1+-) 38.Kf3 (38.gh4 Kf8+-) 38...Re8 (38...h3 39.Rc7 a6 40.Rb7 ab5 41.Rh1+-) 39.Kg4 (39.gh4!? Kf7+-) 39...h3 (39...hg3 40.Rc7 Re6 41.Rgc1+-) 40.Rh1 g5 (40...Re7 41.Rh3 a5 42.Rh6+-) 41.Rh3 Kg7 (41...gf4 42.gf4 Rf8 43.Rc7+-) 42.fg5 (42.Rc7 Kg6 43.Rch7 gf4 44.R3h6) 42...Kg6 (42...Re7+-) 43.Rh6 Kg7 (43...Kf7 44.Rc7 Kg8 45.Kf5 Re3 46.Kf6 Rf3 47.Kg6 Rf7 48.Rh8 Kh8 49.Rc8 Rf8 50.Rf8) 44.Rc7 (44.Rc7 Kg8 45.Kf5 Re1 46.Kf6 Rf1 47.Kg6 Rf7 48.Rc8 Rf8 49.Rh8 Kh8 50.Rf8) 1-0. Gehaktbalmetjus (2010) - Matematik555 (2005), Rated Bullet game, lichess.org, 2020.

4.ab4 e5 5.b5 d6 6.e3 Be6 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.c4 (10.Ng5 Bf5+=) 10...d5 11.d3 (11.cd5 Bd5 12.Nc3 e4 13.Nd5 Nd5+=) 11...dc4 12.dc4 Qc7 13.Nbd2 Rfd8 14.Qc2 Nc5 (14...h6 15.Bd3=) 15.Rfc1 (15.Be5 Qc8+/-) 15...Rac8?? (better 15...Nfd7=) 16.Be5+- (worse 16.Ne5 a5+/-) 16...Qb6 17.Bd4 Rd7 18.Nb3 Rdc7 (18...h6 19.Rd1+-) 19.Ne5 (better 19.Ng5!?+-) 19...Nfd7+/- 20.Nd3 f6 (20...Bf5 21.Qc3+-) 21.Ndc5 (21.Nb2!? Bf7 22.Bd3 g6+-) 21...Bc5 22.Nc5 Nc5 23.Qb2 Qd6 (23...a6 24.Bf3+-) 24.Qa3 (24.Ra7!? b6 25.Rca1 Nd7+-) 24...b6 25.Bc5 (25.Rd1!?+-) 25...Qc5+/- 26.Qc5 bc5 (better 26...Rc5!? 27.Ra7 Bc4 28.Bc4 Rc4+=) 27.Ra6 Kf7 (better 27...Re8+-) 28.Rca1 Ra8 (28...Rd8 29.Ra7 Re7 30.R1a2+-) 29.Bf3 (29.b6 Re7+-) 29...Rd8 30.Ra7 Rdd7 (30...Ra7 31.Ra7 Kg6+-) 31.Rc7 Rc7 32.b6 Rc8 33.b7 Rb8 34.Ra8 Rb7 35.Bb7 Bc4 36.Rc8 Kg6 37.Rc5 Be6 38.Rc1 h5 (38...f5 39.f4+-) 39.h3 (39.e4 Bg4+-) 39...h4 40.g3 (better 40.e4 Bf7+-) 40...hg3 41.fg3 Bh3 42.Kf2 Bf5 43.Bf3 Kg5 44.Be4! Be4 45.Rc5 (45.g4 Kg4 46.Rg1 Kf5 47.Rg7 Ke6+-) 45...f5 46.g4 (better 46.Rc7 g6 47.Rg7+/-) 46...Kg4= 47.Rc7 g5 48.Rg7 f4 49.ef4 Kf4 50.Ke2 Bf5 51.Ke1 Kg4 52.Rg5 Kg5 ½-½. Gehaktbalmetjus (2010) - Bungbung2 (2045), Rated Bullet game, lichess.org, 2020.

4.ab4 e6 5.b5 Be7 6.e3 a6 7.Nf3 d5 8.Be2 0-0 9.0-0 Nbd7 10.c4 b6 (10...dc4 11.Bc4 Nb6 12.Be2=) 11.ba6 (11.cd5 Nd5 12.ba6 Ra7+=) 11...Ra6 12.cd5 Ra1 13.Ba1 Nd5 14.d4 Bf6 (14...Bb7 15.Nc3=) 15.Nc3 Nc3 16.Bc3 Bb7 17.Bb4 Re8 18.Qb3 Bd5 19.Bc4 (19.Qc2 Qc8 20.Rc1 Qc2 21.Rc2 Ra8+=) 19...Bf3= 20.gf3 Bh4 (20...Be7 21.Ra1=) 21.f4+= Qf6 22.Kh1 (22.Bd3 Qh6+=) 22...Qf5= 23.Qd1 Qe4 24.Kg1 Nf6 25.Bd3 Qd5 26.Be1 g5 (26...Kh8 27.Qc2=) 27.f3 (27.fg5 Qg5 28.Kh1 Kh8+=) 27...Be1= 28.Qe1 (worse 28.Re1 gf4 29.Qe2 Kh8-/+) 28...gf4 29.ef4?? (better 29.Qh4 Nh5 30.Be4+=) 29...Qd4-+ 30.Kh1 (30.Rf2 Qd3 31.Rg2 Kh8 32.Qe5-+) 30...Qf4 (better 30...Qd3 31.Qa1 Rd8-+) 31.Qg3 Qg3 32.hg3 Nd5 33.Rb1 Rb8 34.Be4 b5 35.Bd5 ed5 36.Kg2 (36.Rd1 b4 37.Rd5 b3-+) 36...b4 37.Kf2 Kf8 38.Ke3 Ke7 39.Kd4 Kd6 40.f4 (40.g4 b3-+) 40...f5 (better 40...b3 41.Rb2-+) 41.Rh1 b3 42.Rh6 Ke7 43.Rh7 Ke6 44.Rh6 Kd7 45.Rh7 Kc6 46.Rh6 Kb5 47.Kd5 (47.Kc3 Rg8 48.Rh7-+) 47...Ka4 48.Rh1 b2 49.Rb1 Ka3 50.Kc4 (50.Ke6 Rb5-+) 50...Ka2 51.Rb2 (51.Rh1 b1Q 52.Rb1 Rb1-+ (worse 52...Kb1 53.Kd5-+)) 51...Kb2 52.Kd5 (52.Kd4 Kc2-+) 52...Kc2 53.Ke5 Rb5 54.Kf6 Kd3 55.Kg5 Ke3 56.g4 (56.Kh5-+) 56...fg4 57.Kg4 Rb4 (57...Ke4 58.Kg3 Rf5 59.Kg4 Rf4 60.Kg5 Kf3 61.Kh5 Rf5 62.Kh6 Kg4 63.Kg6 Kf4 64.Kh7 Kg5 65.Kg7 Rf6 66.Kh7 Rf7 67.Kh8 Kf5 68.Kg8 Kg6 69.Kh8 Rf8) 58.Kg5 (58.Kf5-+) 58...Rf4 59.Kh5 (59.Kg6 Kf3 60.Kh5 Rf5 61.Kg6 Kg4 62.Kh6 Rg5 63.Kh7 Kh5 64.Kh8 Kg6 65.Kg8 Rf5 66.Kh8 Rf8) 59...Re4 (59...Rf5 60.Kh6 Kf4 61.Kh7 Kg5 62.Kg7 Rf4 63.Kh7 Kf6 64.Kg8 Rh4 65.Kf8 Rh8) 60.Kg5 Kf3 (60...Re5 61.Kg6 Kf4 62.Kf6 Re4 63.Kg6 Re6 64.Kg7 Kf5 65.Kf7 Re5 66.Kg7 Re7 67.Kf8 Kf6 68.Kg8 Re8 69.Kh7 Rf8 70.Kh6 Rh8) 61.Kh5 (61.Kf5 Re8 62.Kg6 Kf4 63.Kf7 Re3 64.Kf6 Re5 65.Kg6 Rf5 66.Kh6 Rf6 67.Kh7 Kg5 68.Kg7 Rf5 69.Kh7 Kf6 70.Kh6 Kf7 71.Kh7 Rh5) 61...Re5 (61...Rg4 62.Kh6 Kf4 63.Kh5 Kf5 64.Kh6 Kf6 65.Kh7 Rh4 66.Kg8 Rh3 67.Kf8 Rh8) 62.Kg6 Re8 (62...Re8 63.Kf5 Re4 64.Kg6 Kg4 65.Kf6 Re2 66.Kg6 Rf2 67.Kh6 Kf5 68.Kg7 Kg5 69.Kh7 Kf6 70.Kg8 Rh2 71.Kf8 Rh8; 62...Kg4 63.Kf6 Kf4 64.Kg6 Re6 65.Kg7 Kf5 66.Kf7 Re5 67.Kg7 Re7 68.Kf8 Kf6 69.Kg8 Re8 70.Kh7 Rf8 71.Kh6 Rh8) 0-1. Gehaktbalmetjus (2085) - elmanorc (2085), Rated Bullet game, lichess.org, 2020.

4.ab4 e6 5.e3 Bb4-/+ 6.c3 Be7 7.d4 d5 8.Nf3 0-0 9.Bd3 Nc6 10.0-0 a6 11.Nbd2 b5 (11...Qc7!?-/+) 12.Bb5= Bb7 13.Bd3 Rb8 (13...a5 14.Qa4=) 14.Ba3+= Ba3 15.Ra3 Qd6 16.Qa1 e5 17.de5 Ne5 18.Ne5 (18.Ba6? Nf3 19.Nf3 Ra8-+) 18...Qe5 19.Nf3 Qh5 (19...Qd6 20.Ra5+= (20.Ba6? Ra8-+)) 20.Nd4 (20.Rb1 Ne4+/-) 20...Rfe8 21.Ba6 Ba8 (21...Ba6!? 22.Ra6 Ne4+=) 22.Be2 Qh6 23.Bf3 Re5?? (better 23...Ne4+/-) 24.Ra8+- (24.Ra8 Ra8 25.Qa8 Re8 26.Qa5+-) 1-0. Gehaktbalmetjus (2060) - Emphy (2060), Rated Bullet game, lichess.org, 2020.

4.ab4 g6 5.e3 Bg7 6.Nf3 0-0 7.Be2 Nc6 8.b5 Nb8 9.0-0 d6 10.d4 Bd7 11.c4 Qc7 12.Nbd2 a6 13.Qb3 Be6 14.Rfc1 White plans c5 14...Nbd7 15.Ng5 Qb6 (15...Bg4!? 16.f3 h6+/-) 16.Ne6 fe6 17.Bf3 d5 (better 17...ab5 18.Qb5 Qb5 19.cb5 d5+/-) 18.c5?? (better 18.cd5 ed5 19.Bd5 Kh8 20.Bc4+-) 18...Qb5= 19.Qb5 ab5 20.Ra8 Ra8 21.Ra1 (21.Rb1 b4=) 21...Ra4 (21...Ra1 22.Ba1 Ne8 23.Be2 Nc5 24.Bb5=) 22.Bd1 (better 22.Rb1=) 22...Rb4?? (better 22...Ra1 23.Ba1 Ne8=+) 23.Bc3 Ra4 (23...Rc4 24.Nc4 dc4+-) 24.Ba4 ba4 25.Ra4 Ne4 (25...Ne8 26.Nb3 e5 27.Ra7 ed4 28.ed4+-) 26.Ne4 de4 27.Ra8 Kf7 28.Rd8 (28.Ra5 Nf6+-) 28...Nf6 (28...Nc5 29.dc5 Bc3 30.Rb8+-) 29.h3 Nd5 30.Ba5 e5 (30...Nf6 31.Rb8 e5 32.Rb7 ed4 33.c6+-) 31.de5 (better 31.Rd5!? ed4 32.ed4 Bf6+-) 31...e6 (31...Ke6 32.Rb8 Kd7 33.e6 Kc6 34.Rc8 Kb5+-) 32.Rd7 Kf8 33.Rd6 (better 33.Rb7!? Be5 34.c6 Ke8 35.Rh7 Ne7+-) 33...Be5 34.Re6 Bc7 (34...Bc3 35.Bc3 Nc3 36.Rb6+-) 35.Bc7 Nc7 36.Re4 Na6 37.Rc4 Ke7 38.c6 bc6 39.Rc6 Nb8 40.Rc7 Nd7 41.Rd7! Kd7 42.Kh2 Ke6 43.Kg3 Kf5 44.e4! Ke4 45.Kg4 Ke5 (45...h6 46.f4 Ke3+-) 46.Kg5 Ke6 47.Kh6 Kf7 48.Kh7 Kf6 49.h4 g5 50.Kh6 gh4 51.Kh5 Kf5 52.Kh4 Kf4 53.Kh3 Kf5 54.g3 Kg5 55.Kg2 Kh5 56.f4 Kg4 ½-½. Gehaktbalmetjus (2110) - Razin1381 (2015), Rated Bullet game, lichess.org, 2019.

4.d4 Qa5 5.Bc3 Nb4 6.a3 e6 7.Bb4 Qb5 8.e3 Qc6 9.Nf3 d6 10.cd6 Bd6 11.Bd3 0-0 12.0-0 b5 13.Bd6 Qd6 14.Bb5 a6 15.Bd3 Bb7 16.c4 Bf3 17.Qf3 g6 18.Nc3 e5 19.c5 Qe6 20.d5 e4 21.Be4 Qe5 22.Rac1 Rab8 23.Na4 Rb3 24.Ra1 Qe8 25.Bc2 Qa4 26.Bb3 Qb3 27.Qf6 Qd5 28.c6 Rc8 29.Rac1 Qh5 30.c7 Qh6 31.Rfd1 Qh5 32.Rd8 Rd8 33.cd8Q 1–0. Abdullaevich (1615) – dricamagra, lichess.org, 2018.

4.d4 d5 5.e3 Bf5 6.Bd3 Bd3 7.Qd3 e6 8.Nf3 b6 9.cb6 Qb6 10.Bc3 Ne4 11.0-0 Nc3 12.Nc3 Rc8 13.Qb5 Qc7 14.Rfc1 Bd6 15.Na4 0-0 16.Nc5 Bc5 17.Qc5 Qd7 18.Qa3 f6 19.c4 dc4 20.Rc4 e5 21.Rd1?? e4?? 22.Nd2+/– Kh8 23.Rdc1 f5 24.Nb3 Ne7?? 25.Nc5 Qb5 26.Rb4 Qe2 27.Rb2 Qh5 28.Rbc2 Ng6 29.Ne6?? Rc2–+ 30.Nf8 Rc1 31.Qc1 Nf8 32.g3 h6 33.Qc8 Qf7 34.Qb8 Kh7 35.Kg2 Ng6 36.d5 Ne5?? 37.d6?? Nf3 38.Kf1?? Qc4 39.Kg2 Qc1 40.Qc7 Qg1 41.Kh3 Qh2# 0–1. lllllll21 (1605) – cicamica (1745), kurnik, 2012.

4.e3 e5 5.d4 ed4 6.ed4 d6 7.cd6 Be7 8.de7 Qe7 9.Qe2 Qe2 10.Be2 0-0 11.Nf3 Re8 12.Nc3 Bg4 13.0-0 Bf3 14.Bf3 Nd4 15.Nd5 Nd5 16.Bd4 Nf4 17.Bb7 Rab8 18.Bc6 Re6 19.Ba4 Rb4 20.Bb3 Rd4 21.Be6 Ne6 22.Rfd1 Rc4 23.Rab1 g6 24.Rd2 Kg7 25.g3 Nd4 26.Rb2 Nf5 27.Rb7 Ra4 28.Rdd7 Ra2 29.Rf7 Kh6 30.Ra7 Kg5 31.Ra2 1–0. A_VB – dafidi, lichess.org, 2019.

4.Nf3 e6 5.d4 Qa5 6.Nbd2 Ne4 7.c3 Nc3 8.Bc3 Qc3 9.e3 e5 10.Rc1 Qb2 11.Qc2 Qc2 12.Rc2 ed4 13.ed4 Be7 14.Bb5 0-0 15.Bc6 dc6 16.0-0 Bf5 17.Rb2 Rab8 18.Ne5 Rfd8 19.Ndf3 Bf6 20.Rd1 Rd5 21.Rdd2 h6 22.g4 Be4 23.Kf1 Kf8 24.Ke2 Be7 25.Ke3 Bh7 26.h3 f6 27.Nc6! Rc8 28.Ne7 Ke7 29.Rb7 Rd7 30.Rd7 Kd7 31.Rb2 Re8 32.Kd2 Kc7 33.a4 Be4 34.Ne1 Bc6 35.a5 Re4 36.Kd3 h5?? 37.f3?? Re7?? 38.Kd2+- hg4 39.hg4 g5 40.a6 f5 41.gf5 Rf7 42.Ke3 Rf5 43.Kf2 g4 44.Kg3 (44.Kg3 gf3 45.Rf2+-) 1–0. linakip – aqualiter (1650), kurnik, 2011.

4.Nf3 e6 5.d4 b6 6.cb6 Qb6 7.Qc1 Ba6 8.c3 Be7 9.Nbd2 0-0 10.Rb1 Qc7 11.g3 d6 12.Bg2 Rac8 13.Qd1 Rfd8 14.0-0 e5 15.de5 de5 16.Re1 Bc5 17.Qa4 Bb7 18.Nb3 Bb6 19.Nbd2 Na5 20.Nb3 Nc4 21.Ba1 h6 22.Nbd2. linakip – phunt2011, kurnik, 2012.

4.Be5 Bc5 5.e3 Nc6 6.Bb2 d5 7.Nf3 Bg4 8.Be2 0-0 9.0-0 Qb6 10.Bf6+- gf6 11.Nc3 Qc7? 12.Nb5 Qd7 13.Nbd4 Bd4 14.Nd4 Be2 15.Ne2 Kh8 16.Nf4 Rg8 17.Kh1 Rg5 18.Rb1 Rag8 19.c3 Ne5 20.d4 Ng6? 21.g3 Nf4 22.ef4 Rg4 23.Qb3 Qf5 24.Qb7 Qh5 25.Qc6 Rf4 26.f3 Rf3+= 27.Rg1?? Rf2–+ 28.Rg2 Qf3 29.Rbg1 Rg3!! 30.Qc8 Kg7 31.Qh3 Rfg2 32.Qg3 Rg3 33.Rg2 Qg2 0–1. orangutanb4 (1960) – pandorgelak (1665), kurnik, 2011.

4.Be5 Bc5 5.Nf3 0-0 6.Bb2 Nc6 7.g3 d5 8.Bg2 d4 9.0-0 Bg4 10.d3 Qb6 11.Qc1 Rfe8 12.Re1 Rad8 13.Nbd2 Bb4 14.c3 dc3 15.Bc3 Bc3 16.Qc3 Rc8 17.Qb3 Qd8 18.Qb7 Nd4 19.Rac1?? Rc1 20.Rc1 Ne2 21.Kf1 Nc1 22.Ne4 Qd3 23.Kg1 Qd1 24.Bf1 Bh3 25.Ned2–+ Ne2 26.Kh1 Bf1 27.Qb3 Bg2! 28.Kg2 Qb3 29.Nb3 Ne4 30.Nfd4 (30.Nfd4 Nd4 31.Nd4–+) 0–1. linakip – morzechowski, kurnik, 2012.

4.Be5 Nc6 5.Bb2 Bc5 6.e3 Qb6? 7.Bc3 (7.Bf6 gf6 8.Nc3 Qa5+-) 7...d5 (7...Be7 8.Nf3+=) 8.Nf3 (8.Bf6 gf6 9.Nc3 Qd8+-) 8...Bg4 (8...d4 9.ed4 Nd4 10.Bd4 Bd4 11.Qe2 Be6 12.Nd4 Qd4 13.c3=) 9.Be2 (9.Bf6 gf6 10.Nc3 Qd8+-) 9...0-0-0 (9...Bf3 10.Bf3 (worse 10.gf3 d4=+) 10...d4 11.ed4 Nd4 12.0-0+-) 10.d4 (10.Bf6 gf6 11.Nc3 Qc7+-) 10...Bb4 (10...Bd6 11.Nbd2+-) 11.0-0 Bc3 (11...Bd6 12.h3 Bf3 13.Bf3+- (13.gf3?! Qc7+=)) 12.Nc3 Rhe8 13.Rb1 Qc7 14.Nb5 Qb8 (14...Qa5 15.Ng5 Be2 16.Qe2+-) 15.c4 Ne4 (15...dc4 16.Bc4 Rd7 17.h3+-) 16.cd5 (better 16.Qc2 dc4 17.Bc4 Bf3 18.gf3+-) 16...Ne7?? (better 16...Rd5 17.Qb3 Nf6+-) 17.Rc1 (better 17.Qc2 Nc6 18.dc6 b6+-) 17...Kd7 (17...Nc6 18.dc6 bc6 19.Rc6 Kd7+-) 18.Rc7 (better 18.Ne5 Qe5 19.de5+-) 18...Qc7 19.Nc7 (19.Ne5 Qe5 20.Bg4 Qf5+-) 19...Kc7 (19...Nc3 20.Qc2 Ne2 21.Kh1 Bf3 22.Ne8 Bd5 23.Ng7+-) 20.Qa4 (better 20.Qc2 Nc3 21.Qc3 Kb8 22.Qc2+-) 20...Nd5 (20...Kb8 21.Rc1+-) 21.Rc1 (21.Bb5!? Nec3 22.Qa5 Kb8 23.Be8 Re8+-) 21...Kb8 22.Bb5 (22.Qb3 Bf3 23.Bf3 f5+-) 22...Re6 (22...Nec3 23.Qb3 (23.Be8?! Na4 24.Ba4 Bf3 25.gf3 a6+-) 23...Nb5 24.Qb5 Bf3 25.gf3+-) 23.Ne5 Re5 (23...Nec3 24.Qb3 Rb6 25.Ng4 (25.Rc3?! Nc3 26.Qc3 Rb5+-) 25...Rb5 26.Qc2+- (26.Rc3 Nc3 27.Qc2 Rb1 28.Qb1 Nb1–+)) 24.de5 Be6 (24...Ndc3 25.Qb4 a5+-) 25.Qe4 Nb4 (25...Nc7 26.a4 a6+-) 26.Qb4 a6 27.Ba6 (27.Ba6 Rd7 28.Bc4+-) 1–0. BeepBeepImAJeep (2545) – AlphaLeonis (1945), lichess.org, 2017.

4.Be5 Nc6 5.Bf6 Qf6 6.c3 Bc5 7.Nf3 d5 8.e3 Bd6 (8...Be6 9.d4 Bd6 10.Nbd2+=) 9.d4 0-0 10.Bd3 Bg4 11.Nbd2 Rac8 12.0-0 Ne7 13.Qc2 Ng6 14.Bg6 (14.Rab1 b6+/-) 14...fg6+= 15.h3 Bh3? (better 15...Bf3 16.Nf3 Rf7+=) 16.gh3+- Qe6 17.Kg2 b5 (17...Bb4 18.Nb1+-) 18.Qd3 (18.Qb3 Rf5+-) 18...Rf5 (18...Qd7 19.e4+-) 19.Rh1 (19.a4 b4 20.cb4 Bb4+-) 19...Rcf8 20.Raf1 (20.Qb5 g5 21.Qd3 h6+-) 20...Qf6 21.e4?? (21.Qe2 Qe6+-) 21...de4 (better 21...Rg5 22.Ng5 Qg5 23.Qg3 Bg3-+) 22.Qe4 (22.Ne4 Qe6 23.Nfd2 Bf4+-) 22...Qf7 (22...Bf4 23.h4 Bh6+/-) 23.h4 (23.Qc6 Rf6 24.Rhg1 a6+-) 23...Re8? (better 23...Rf4!? 24.Ng5 Rf2 25.Kh3 Qd7 (worse 25...Qa2 26.Rf2 Rf2 27.Qe8 Rf8 28.Qe6 Qe6 29.Ne6+-) 26.Qe6 Qe6 27.Ne6 Rd2 28.Nf8 Bf8+=) 24.Qg4 Rf4 25.Qg5?? (better 25.Qh3+-) 25...Be7?? (25...Rf5 26.Qg4 Rf4+-) 26.Qb5+- Rf8 (26...Rc8 27.Re1 Bd6+-) 27.Qc4 (better 27.Qb3+-) 27...Rf3 28.Qf7 R3f7 (28...Kf7?? 29.Nf3 Rc8 30.Rb1+-) 29.f4 (29.Rh3 Rf4+/-) 29...Bd6 30.Rf3 Re7 (30...Rf4 31.Rf4 Rf4 32.Nf3+/-) 31.Rhf1 (31.Kg3 Bc7+-) 31...Rfe8 (31...Re2 32.R1f2 Re1 33.f5 gf5 34.Rf5 Rf5 35.Rf5 Re2 36.Rf2+/-) 32.R1f2 Re2 33.Nc4 Rf2 34.Rf2 (34.Kf2 Re6+-) 34...Bc7 (34...Be7!? 35.Re2 Kf8+/-) 35.Ne5 Be5? (35...Rc8+-) 36.fe5 (36.de5?! Rc8 37.Rc2 Rc4+/-) 36...Rc8 37.Rc2 (37.d5 Re8 38.e6 a6+-) 37...g5 38.Kf3 (better 38.hg5 Kf7 39.Kf3+-) 38...gh4 39.Kg4 g5? (better 39...Rc4+-) 40.Kg5 h3 41.Kf4 (41.Kf6 h2 42.Rg2 Kh8 43.Rh2 Rc3+-) 41...Rf8 (41...Kf8 42.Kg3+-) 42.Ke4 h2 (42...Rc8+-) 43.e6 (43.Rg2 Kh8 44.Rh2 Rc8+-) 43...Kh8 (43...h1Q 44.Kd3 Qf3 45.Kc4 Rc8 46.Kb4 Qb7 47.Ka5 Rc6 48.Rg2 Kh8 49.Rg8 Kg8 50.d5 Ra6) 44.Rh2+- Re8 (44...Rf1 45.d5 Re1 46.Kf5+-) 45.d5 Re6 (45...a6+-) 46.de6 Kg7 (46...Kg8 47.Rf2 a6 48.e7 Kg7 49.e8Q a5 50.Qf8 Kg6 51.Qg8 Kh5 52.Rh2) 47.Rg2 (47.Rf2 Kg8 48.e7 Kg7 49.e8Q a5 50.Qf8 Kg6 51.Qg8 Kh5 52.Rh2) 47...Kf8 48.Kd5 Ke7 49.Rg7 Kf6 (49...Kf6 50.Rf7 Kg5 51.e7 Kh5 52.e8Q a5 53.Rf1 Kh6 54.Qg8 Kh5 55.Rh1; 49...Kf8 50.Rf7 Ke8 51.c4 h5 52.c5 a6 53.c6 Kd8 54.c7 Kc8 55.Kc6 h4 56.Rf8) 0-1. Gehaktbalmetjus (2070) - sac9bass (2130), Rated Bullet game, lichess.org, 2019.

4.Be5 Ng4 5.Bd4 Nc6 6.Bc3 Bc5 7.e3 Ne3 8.de3 0-0 9.Bd3 Qg5 10.Qf3 d6 11.Nd2 b6 12.Ne4 Qe7 13.Nf6 Kh8 14.Nh7 Rd8 15.Qh5 Be3 16.Ng5 Kg8 17.Qh7 Kf8 1–0. Bernard – Pengy, playchess.de, 2002.

(--> 1.b4 c6 2.Bb2 Nf6).

3.a3 a5 (--> 1.b4 c6 2.Bb2 a5 3.a3 Nf6).

3.a3 Qb6 4.Nf3 a5 5.c3 (---> 1.b4 c6 2.Bb2 a5 3.c3 Qb6 4.a3 Nf6 5.Nf3).

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

3.a3 d5 4.e3 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a3).

3.a4 d5 4.e3 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a4).

3.b5 d5 4.e3 e6 5.c4 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

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

3.c4 d5 4.cd5 cd5 (--> 1.b4 c6 2.c4 d5 3.cd5 cd5 4.Bb2 Nf6).

3.c4 d5 4.cd5 cd5 5.e3 e6 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

3.c4 d5 4.e3 dc4 5.Bc4 e6 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 dc4 6.Bc4).

3.c4 d5 4.e3 Nbd7 5.a3 e5 6.cd5 cd5 7.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

3.c4 d6 4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6).

3.c4 d6 4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 c6 7.Be2).

3.c4 e6 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).

3.c4 e6 4.b5 d5 5.e3 Bd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd7 5.c4 c6).

3.e3 Qb6 4.a3 a5 5.c4 ab4 6.c5 Qc7 7.ab4 Ra1 8.Ba1 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1 Nf6 8.e3).

3.e3 d5 4.c4 e6 5.a3 Bd6 6.Nf3 0-0 7.c5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.c5).

3.e3 d5 4.Be2 Bf5 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.Be2).

3.e3 d5 4.Nf3 Bg4 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

3.e3 d6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6).

3.e3 g6 4.Nf3 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 c6).

3.e3 g6 4.Nf3 Bg7 5.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 c6).

3.Nf3 d5 4.e3 Bg4 5.Be2 Nbd7 6.0-0 e6 7.a3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7 7.0-0).

3.a3 a6 (--> 1.b4 a6 2.Bb2 Nc6 3.a3 Nf6).

3.a3 e5 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 Nc6).

3.a3 g5 4.d3 (4.b5 Nb8=) 4...Bh6 (4...Bg7 5.b5 Nb8 6.e4=) 5.Nd2 e6 (5...d5 6.b5 Na5 7.e4=) 6.Ne4 Nd5?? (better 6...Bg7+=) 7.Bh8+- Nde7 (7...f5 8.Ng3 Qe7 9.c4+-) 8.e3 (8.Nf6 Kf8 9.e4 Ng8+-) 8...b5 (8...Ng8 9.Qh5 d5 10.Nf6 Nf6 11.Qh6+-) 9.Qh5 (better 9.Nf6 Kf8+-) 9...Ng6 (9...Ng8+-) 10.Bf6 Ba6 (10...Nce7 11.Qh6 Bb7+-) 11.Bd8 Rd8 12.Qh6 Ke7 13.Qg5 Ke8 14.Nf6 Ke7 15.Nf3 (better 15.Nh7 Ke8+-) 15...Rh8 16.Nh7 (16.Nd5!? Kd6 17.c4 bc4 18.dc4 Bc4+-) 16...Kd6 17.Qc5 1–0. Portilla Chavez,Luis Fernando (1610) – Yujra Chavez,VR, 1st IRT UNAS – Semana Santa en Tingo, 2012.

3.b5 d6?? 4.bc6+- e5 (4...bc6 5.Nc3+-) 5.d4 (5.cb7!? Bb7 6.Nc3 d5+-) 5...bc6 6.de5 Qd7?? (6...Rb8 7.Ba3 Ng4+-) 7.ef6 gf6 8.Bf6 Bg7 (8...Rg8+-) 9.Bg7 Kd8 10.Bh8 Bb7 11.Bf6 (better 11.Nc3+-) 11...Qe7 12.Be7 Ke7 13.Qd3 Kd7 14.Qf5 (better 14.Qb3 Re8 15.Qb7 Re5+-) 14...Kd8 15.Qf7 Kc8 16.Qe8 1–0. DEFFM – enispalamutcu, lichess.org, 2020.

3.b5 e6 (---> 1.b4 e6 2.Bb2 Nc6 3.b5 Nf6).

3.c3 d5 4.e3 Bf5 5.Nf3 Bb1 6.Rb1 e5 7.d3 (7.b5!? Na5 8.Ne5+/–) 7...a6 8.Be2 Be7 9.Qc2 g6 10.a4 Bd6 11.0-0 Ne7 12.c4 c6 (12...Nc6 13.c5 Be7 14.Qc3+/–) 13.cd5 (13.c5 Bc7 14.Ne5 Neg8+-) 13...cd5 14.Rfc1 (better is 14.Ne5!? 0-0 15.Qc3+-) 14...Rc8 15.Qd1 Rc1 16.Rc1 0-0 17.d4?? e4=+ 18.Nd2 Nc6 19.b5+= ab5 20.ab5 Ne7 21.Bf1 Kh8 22.Nb3 Nfg8 23.Nc5 Qc7 24.Ra1?? Bh2= 25.Kh1 Bd6 26.Kg1 h6 27.g3 Kg7 28.Bg2 b6–/+ 29.Nb3 Nf5 30.Nd2 Qe7 31.Nf1 h5 32.Ba3?? Ba3–+ 33.Ra3 Nf6 34.Ra1 Nd6 35.Rc1 Nd7 36.Qe2 f5 37.f3 Rf7 38.fe4 Ne4 39.Be4 fe4 40.Qg2 Rf6 41.Qc2 Qf7 42.Qc6?? Rc6–+ 43.Rc6 g5 44.Rc8 h4 45.Rc2 h3 46.Rg2 hg2 (46...hg2 47.Kg2 Qf3 48.Kg1 Nf6 49.Nd2 Qe3 50.Kf1 Ng4 51.Ne4 de4 52.Kg2 Qf3 53.Kh3 Nf2 54.Kh2 Qh1) 0–1. Fournier,Frederic (1860) – pacman1987 (1830), Active blind, 2011.

3.c3 g6 4.d4 d5 5.b5 Na5 6.Nd2 Nc4 7.Nc4+= dc4 8.e3 Bg4 9.Qa4+/– e6 10.Bc4 Qd6 11.f3+- Bf5 12.e4 Bg4?? 13.e5 (13...Qd8 14.ef6+-) 1–0. Wall,Bill – MacDad, Internet, 2002.

3.d3 e5 4.e4 Bb4 5.c3 Bc5 6.Be2 d6 7.Nf3 Be6 8.0-0 Qd7 9.d4 ed4 10.cd4 0-0-0 11.dc5 Ne4 12.cd6 cd6 13.Bb5 a6 14.Ba4 f6 15.Qc2 Nc5 16.Rd1 Bf5 17.Qc3 Ne4 18.Qc1 Kb8 19.Nd4 Bg4 20.f3 Bf3 21.Nf3 Qc7 22.Qe3 Na5 23.Rc1 Qe7 24.Qb6 Nc5 25.Nd4 Qe3 26.Kh1 Qf2 27.Na3 h5 28.Nac2 g5 29.Ne6 Rdg8 30.Bd4 Qe2 31.Qa5 Rc8 32.Rab1 Qe6 33.Nb4 Qe7 34.Nd5 Qe4 35.Bc5 dc5 36.Re1 Qd5 37.Qa6 Rc7 38.Re6 h4 39.Bc6 Qe6 40.Bb7 Qa6 41.Ba6 Ka7 42.Bc4 Rd8 43.h3 Rd4 44.Be6 c4 45.Bg4 c3 46.Bf5 Rf4 47.Bc2 Rf2 48.Rc1 g4 49.hg4 Rc4 50.Bf5 h3 51.gh3 Ra2 52.Be6 Rca4 53.Ba2 Ra2 54.Rc3 Ra1 55.Kh2 Kb6 56.Rf3 Ra2 57.Kg3 f5 58.gf5 Ra8 59.h4 Rg8 60.Kh3 Kc6 61.h5 Rh8 62.Kh4 Kd6 63.f6 Rf8 64.h6 Ke6 65.Kg5 Rg8 66.Kh5 Kf7 67.h7 Rh8 68.Kh6 Kf8 69.Rg3 Kf7 70.Rf3 Rg8 71.hg8Q Kg8 72.f7 Kf8 73.Kg6 Black resigned 1–0. Crusader Rabbit (1710) – Country_Girl, ChessWorld.net, 2016.

3.e3 a6 4.a3 e5 5.b5 (5.d4 ed4 6.ed4=) 5...Na5 (5...ab5 6.Bb5 Bd6 7.Ne2=) 6.Nc3 (6.Be5!? d6 7.Bd4+-) 6...Bc5 (6...ab5 7.Bb5 c6=+) 7.Nge2 (7.ba6 ba6 8.Na4 Bd6=) 7...d6 (7...Nc4 8.Qc1–/+) 8.d4 (8.ba6 ba6 9.Ng3 0-0=) 8...ed4 (8...Nc4 9.ba6 Nb2 10.Qb1 ed4 11.ed4 ba6 12.Qb2–/+) 9.Nd4= Bd7 (9...Bg4 10.Qd2=) 10.Nf3 (10.ba6 ba6 11.Bd3 0-0=) 10...Qe7 11.a4 (11.ba6 ba6 12.Rb1 0-0=) 11...0-0 12.Nd5 Ne4?? (better 12...Nd5 13.Qd5 Be6=+) 13.Ne7+- Kh8 14.h3 (14.Qd3 f5+-) 14...c6 (14...Be6 15.Qd3 f5 16.Nd2+-) 15.Nh4 (15.Bd4!? Be6 16.Bc5 dc5+-) 15...Rfe8 (15...Bb4 16.Ke2 Bc3 17.Qc1+-) 16.Nef5 (16.Nhf5 Bb4 17.c3 Re7 18.cb4 Bf5 19.ba5 d5+-) 16...f6 (16...Bb4 17.c3 Bc5 18.Bd3+-) 17.g4 (17.Ba3 Ba3 18.Ra3 d5+-) 17...Ng5 (17...Bb4 18.Ke2+-) 18.Nd6 Re6 (18...Red8 19.Ba3 Bd6 20.Bd6+-) 19.Nf7 (better 19.Nb7 Nb7 20.Qd7 Bb4 21.c3 Nc5+-) 19...Nf7 20.Qd7 Re7 21.Qd3 Ne5 22.Qc3 Bb6 23.Nf5 Re6 24.f4 (24.ba6 ba6 25.Rb1 Nf3 26.Kd1 Rd8 27.Bd3 Ne5+-) 24...Nf7 (24...Ng6 25.Be2 ab5 26.ab5+-) 25.Bc4 (25.ba6!? ba6 26.0-0-0 Rae8+-) 25...Nc4 26.0-0 (better 26.Qc4 Rae8 27.ba6 ba6+-) 26...Nfd6 (26...Ne3 27.Qb3 Nf5 28.Kh1 Re3 29.Qf7 Nd6+-) 27.Ng3 (better 27.bc6 Ne3 28.Qb3 Ndc4 29.cb7 Rb8+-) 27...Be3?? (better 27...Re3 28.Kh2 Rc3 29.Bc3 cb5+=) 28.Kh1 (28.Kh2 cb5 29.ab5 Nd2+-) 28...cb5 (28...Bd2 29.Qf3 Nb2 30.bc6 bc6+-) 29.ab5 Nb6 (29...Bd2 30.Qd4 Re3 31.ba6 ba6+-) 30.Qc7 (better 30.Rfe1 Nbc4 31.Nf1+-) 30...Nbc8 (30...Rc8 31.Qc8 Nbc8 (31...Ndc8?? 32.Rfe1+-) 32.ba6 ba6 33.Ra6 Re8+-) 31.Qd7 (better 31.Nf5 Ne7 32.Nd6 Bd2+-) 31...Re8 (31...Re7 32.Qd8 Re8+-) 32.Nf5 Nf5 33.Qe8 1–0. MARYMARY – Country_Girl, ChessWorld.net, 2019.

3.e3 Nb4 4.a3 Nc6 5.Bc4 e5 6.Bb5 Ne7 7.Be5 Nfd5 8.Qg4 a6 9.Bc4 d6 10.Qf3 c6 11.Bb2 g6 12.Bh8 Nb6 Black resigned 1–0. Crusader Rabbit (1815) – GeneralGavin, ChessWorld.net, 2020.

3.e3 e5 4.b5 Na5 5.Be5 Bc5 6.Be2 Ne4 7.Bg7 Rg8 8.Bf3 Rg7 9.Be4 d5 10.Bf3 Bf5 11.Ne2 Nc4 12.Qc1 Qf6 13.Nbc3 Ba3 14.Qd1 Nb2 15.Qb1 Rd8 16.Kf1 Nc4 17.Qe1 Bc2 18.Bd5 Ne5 19.Bb3 Nd3 20.Ne4 Qh4 21.Bc2 Ne1 22.Re1 f5 23.N4g3 Rd2 24.Nf5 Qg5 25.Ng7 Qg7 26.Nd4 Qf6 27.Bf5 a6 28.Nf3 Ra2 29.e4 ab5 30.Bh7 Qb6 31.Re2 Ra1 32.Re1 Re1 33.Ke1 Bb4 34.Ke2 Qc5 35.Rd1 Qc4 36.Ke3 Qc3 37.Kf4 Qf6 38.Bf5 Qh6 39.Kg3 Bd6 40.e5 Qg7 41.Kf4 Qh6 42.Ke4 Bc5 43.Bd7 Ke7 44.Bb5 Qg6 45.Kd5 Bf2 46.g3 Qe6 47.Ke4 Qg4 48.Kd5 Qf3 49.Kc4 Qd1 50.Kb4 Be1 51.Ka3 c5 52.Ba4 Bb4 53.Ka2 Qa4 54.Kb1 Qb3 55.Ka1 b5 56.e6 c4 57.h4 Kf6 58.e7 Bc3 White king mated 0–1. Crusader Rabbit (1775) – radiomadman, ChessWorld.net, 2015.

3.Nf3 Nb4 4.d3 c6 5.e3 c5 6.Be2 Ng4 7.d4 cd4 8.Bd4 h5 9.Nbd2 b5 10.Bb5 g6 11.Bh8 Rb8 12.Bc4 d5 13.Bb3 d4 14.Bd4 Bh6 15.0-0 Qc7 16.Nc4 Bb7 17.Nce5 f6 18.Ng6 Bf3 19.Qf3 Qh2 White king mated 0–1. Crusader Rabbit (1690) – philos, ChessWorld.net, 2013.

3.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Nc6).

3.Bf6 ef6 4.b5 Na5 5.Nf3=.

3.Bf6 gf6 4.b5= Nb4?? 5.e4+- Bh6 6.a3 Nc2 7.Qc2 a5 8.ba6 ba6 9.Nf3 (9...Rb8 10.Nc3+-) 1–0. Wall,Bill – Nebula, Internet, 2003.

4.ba5 Na5 5.e3 d6 6.Be2 e5 7.Nf3 Nc6 8.0-0 Bd7 9.d3 Be7 10.Nbd2 0-0 11.c4 Nb8 12.Qb3 b6 13.Rfe1 Ne8 14.d4 f6 15.de5 fe5 16.c5 Kh8 17.cb6 Ba4 18.Qc3 cb6 19.Nc4 Nd7 20.Bc1 Rc8 21.Qd2 Nc5 22.Qb4 b5 23.Nb2 Bb3 24.Bb5= Bd5 25.e4 Be6 26.a4 Nc7 27.Nd3 Rb8 28.Nc5 dc5 29.Qa5 Bd6 30.Bg5 Be7?? 31.Be7 Qe7 32.Ne5 Nb5 33.ab5 Qg5 34.Nc6 Bh3 35.g3 Qg4 36.Re3 Rbc8 0–1. exp2005 – andredamand, kurnik, 2012.

5.a4 c6 6.c4 cb5 7.cb5 b6 8.Nf3 Bb7 9.g3 Bf3 10.ef3 d5 11.Bg2 Qd6 12.0-0 g6 13.d3 Bg7 14.Nd2 0-0 15.Qc2 Rac8 16.Qb3 e5 17.Rfd1 Nd7 18.Bc3 Nc5 19.Qc2 d4 20.Bb2 Nd7 21.Qb3 Nc5 22.Qa2 Nd3 23.Nc4 Qb4 24.Rd3 Rc4 25.Bf1 Rc2 26.Rb3?? Qc5 27.Qb1 Rd2 28.Bc1 Rc2 29.Ba3 Qc8 30.Bf8 Bf8 31.Ra2 Ra2 32.Qa2 Bb4 33.Rb2 Bc3 34.Rc2 Qc5 35.Bd3 Nc8 36.Qc4 Qc4 37.Bc4 Nd6 38.Bd5 Kg7 39.Kf1 Kf6 40.Ke2 Ke7 41.Kd3 f5 42.Bg8?? h5 43.Bh7 Kf6 44.Re2 Kg7 45.Bg6 Kg6 46.h4 Kf6 47.Kc2 f4 48.Kd3 fg3 49.fg3 Nf5 50.Rg2 Nd6 51.Rf2 Kf5 52.Rg2 Kf6 53.Re2 Nf5 54.Rg2 Ne3 55.Re2 Nd5 56.Re4 Nb4 57.Ke2 d3 58.Kd1 d2 59.Re2 Kf5 60.Re4?? Nd5 61.Re2 Nb4 62.Re4 Na2 63.Kc2 Ke6 64.Re2 Kd5 65.Re4?? Kc5 66.Re5 Be5 67.Kd2 Bg3 68.Ke3 Bh4 69.Kf4 Be7 70.Kf5 Kb4 71.f4 Ka4 72.Ke6 Bh4 73.f5 Kb5 74.f6 Bf6! 75.Kf6 a4 (75...a4 76.Kg6 h4 77.Kf5 h3 78.Ke4 h2 79.Kd4 a3 80.Ke5 Nc1 81.Kd4 h1Q 82.Ke5 a2 83.Kd6 a1Q 84.Ke6 Qe4 85.Kf7 Qa7 86.Kf6 Qae7#) 0–1. linakip – mietko3, kurnik, 2012.

5.c4 b6 6.e3 d5 7.d4 dc4 8.Bc4 Bd7 9.a4 c6 10.Nc3 cb5 11.ab5 Rc8 12.Qd3 Qc7 13.Bb3 e6 14.Nge2 Bb4 15.0-0 Bc3 16.Nc3 (< 16.Bc3 Ng4 (16...Nb5?! 17.Bb2=) 17.g3 Bb5–/+) 16...0-0 17.Rfc1 Qd8 18.f3 e5? (better is 18...Nd5 19.Nd5 Rc1 20.Rc1 Bb5+=) 19.de5+- Bb5 (19...Nh5 20.g4 Bb5 21.Qd8 Rfd8 22.Nb5 Nb5 23.gh5+-) 20.Qd8 Rfd8 21.ef6 g6 22.Ne4 Rc1 23.Rc1 Bd3 24.Nf2 Bf5 25.e4 Be6 26.Be6 fe6 27.Rc7 Nc8 28.Ng4 h5 29.Nh6 Kf8 30.Ba3 Ke8 31.f7 1–0. amator111 (1730) – ksiazew, kurnik, 2011.

5.e3 b6 6.Nf3 Bb7 7.c4 c5 8.d4 d6 9.d5 Qd7 10.Nc3 e6 11.e4 ed5 12.ed5 Be7 13.Be2 0-0 14.0-0 Qf5 15.Bd3 Qh5 16.Re1 Ng4?? (better is 16...Rfe8+/–) 17.h3 (better is 17.Re7 Rab8+-) 17...Ne5 18.Ne5 de5 (18...Qd1 19.Rad1 de5+-) 19.Qh5 Bf6 20.Qh7 1–0. Fournier,Frederic (1865) – protoon17 (1785), Active, 2008.

5.e3 b6 6.Nf3 c6 7.c4 cb5 8.cb5 Bb7 9.d4 Rc8 10.Nbd2 e6 11.Be2 Bd6 12.0-0 0-0 13.Rc1 Rc1 14.Qc1 Qc8 15.a4 Qb8 16.Nc4 (better is 16.Qb1+=) 16...Bf3–/+ 17.Bf3 Bh2 18.Kh1 Bc7 (18...Rc8!? 19.d5 ed5 20.Bf6 Rc4 21.Qe1–+) 19.Qb1 d5 20.Nd2 Nc8 21.Rc1 Nd6 22.Ba3 Rc8 23.Qc2 Bd8 24.Qb2 Nf5 25.Rc8 Qc8 26.Qc1 Qc1 27.Bc1 Be7 28.Bb2 Bb4 29.e4? Nd4?? (better is 29...Nh4 30.Nf1 Nf3 31.gf3 de4–+) 30.Bd4+= Bd2 31.Bf6 gf6 32.ed5 1–0. ourang – genmaczek, kurnik, 2012.

5.e3 d5 6.c4 Bf5 7.d4 e6 8.Nf3 Bd6 (8...Be7 9.cd5 ed5 10.Nc3=) 9.c5+= Be7 10.Nc3 0-0 11.Bd3 Bd3 12.Qd3 Ng4 13.0-0 Qd7 14.h3 Nf6 15.a4 h6 16.Rac1 Rab8 17.Ne2 Ne4 18.Nc3 Nc3 (18...Nf6!?=) 19.Bc3 b6 20.cb6 cb6 21.Bd2 Rbc8 22.Rc8 Rc8 23.Rc1 Rc1 24.Bc1 Bd6 25.Qc2 Nb5 (25...Qc8 26.Qc8 Nc8 27.Ne5=) 26.ab5+= Qb5 27.g3 (27.Qc8!? Kh7 28.Qc3+=) 27...Qc4= 28.Ne1 (28.Qd1 a4=) 28...b5 29.Bb2 (29.Qd1 a4+=) 29...a4 30.Ba1 Qc2 31.Nc2 b4 32.Bb2 a3 33.Ba3? (better is 33.Bc1–/+) 33...ba3–+ 34.Na1 a2 35.Kf1 Kf8 36.Ke2 Ke7 (better is 36...Ba3!? 37.Nc2–+) 37.Kd2 (37.Kd3 Bb4 38.f3 Be1–+) 37...Bb4 38.Kd1 (38.Kc2–+) 38...Bc3 39.Nb3 Kd6 40.f3 e5 41.de5 Be5 42.f4 Bc3 43.Kc2 Bf6 44.g4 g6 45.Kd3 Kc6 46.Kc2 Kb5 47.Kd3 Kb4 (47...Kb4 48.Kc2 g5 49.fg5 hg5–+) 0–1. Fournier,Frederic – Computer3_HARD, Chess.com Internet, 2013.

4.e3 a6 5.Nf3 e5 (5...d5 6.a4 Rb8 7.ab5 ab5 8.Na3+=) 6.Be2 (6.Ne5!? Ne5 7.Be5+/-) 6...Bd6 7.d4 0-0?? (better 7...e4 8.Ne5 0-0=) 8.de5+- (8.Ne5?! Qe7 9.Nf3 Qe6+/-) 8...Ne5 9.Ne5 Qe7 10.Nf3 Ne4 (10...Bb7 11.0-0+-) 11.0-0 Bh2 (11...c5+-) 12.Nh2 Qh4 (12...Bb7 13.Qd4 f6 14.c4+-) 13.Bf3 Ng5 (13...Bb7 14.Qd4 f6 15.g3+-) 14.Nd2 (better 14.Ba8 d6+-) 14...d5 (14...Nf3 15.Ndf3 Qh6 16.Qd5+-) 15.Be5 (15.Bd5 Rb8+-) 15...c5 (15...c6 16.Be2+-) 16.Bg3 (16.Bd5 Ra7+-) 16...Qh6 (16...Nf3 17.Ndf3 Qd8 18.bc5+-) 17.bc5 (better 17.Bd5!? Ra7+-) 17...Be6 18.Nb3 Rad8 (18...Ne4 19.Be5+-) 19.Nd4 Bd7 (19...Ne4 20.Bf4 Qf6 21.c6+-) 20.c6 Bc8 21.c7 Rd7 (21...Nf3 22.Qf3 Rd7 23.a4 ba4 24.Ng4+-) 22.Bg4 f5 (22...Ne6 23.Be6 fe6 24.Ng4+-) 23.Nf5 Rf5 (23...Qf6 24.Qd4 Qd4 25.Nd4 Rdf7+-) 24.Bf5 Rc7 25.Bc8 (better 25.Qd5 Rf7 26.Bc8 Qg6+-) 25...Rc8 26.Qd5 Qe6 (26...Nf7 27.a4 b4 28.Rab1+-) 27.Qe6 (better 27.Qg5 h6 28.Qe5 Qe5 29.Be5 Kf7+-) 27...Ne6 28.Rad1 Rf8 (28...Rc2 29.Rd6 Nc5 30.Nf3+-) 29.Nf3 1-0. Gehaktbalmetjus (2105) - controlref7 (2105), Rated Bullet game, lichess.org, 2020.

4.e3 Bb7 5.Bb5 e6 (better is 5...Nb4!? 6.f3 Nbd5=) 6.Nf3+/– a6 7.Be2 Be7 8.d4 0-0 9.0-0 a5 10.b5 Na7 11.c4 c6 12.a4 cb5 13.cb5 Nc8 14.Ba3 Nb6 15.Be7 Qe7 16.Qb3 Rfc8 17.Nbd2 Bd5 18.Qb2 Rc7 19.Rfc1 Rac8 20.Bd1 Ne4 21.Ne4 Be4 22.Nd2 Bd3 23.Rc7 Rc7 24.Rc1 d5? 25.Nb3?? Na4 26.Qa1 Rc1?? 27.Nc1+- Nc3? 28.Qc3 Bb5 29.Qa5 (29.Qa5 Qe8 30.Bc2+-) 1–0. Fournier,Frederic (1875) – olwars, Active, 2007.

4.g3 Bb7 5.Bg2 g6 6.e3 Bg7 7.Ne2 e6 8.d3 0-0 9.Nd2 Ng4 (9...a5 10.Nd4=) 10.Nc3 (better is 10.Bg7 Kg7 11.Nd4+/–) 10...Nf2?? (better is 10...Nh6=) 11.Kf2+- Qf6 12.Nf3 Ne5 13.e4 Nf3 14.Bf3 Qd4 15.Kg2 h5 16.Rb1 h4 17.Ne2 Qd6 18.Bg7 Kg7 19.Qd2 Qe5 20.Rbe1 Rh8 21.Nf4 Rag8 22.d4 Qg5 23.Ne6! de6 24.Qg5 h3 25.Kf2 f6 26.Qb5 Bc8 27.c4 Rd8 28.Rd1 Bd7 29.Qc5 c6 30.Qe7 Kh6 31.Qf6 Rhf8 32.Qh4 Kg7 33.Rd3 Bc8 34.Re3 1–0. diablo005 – johlind, kurnik, 2012.

(--> 1.b4 d5 2.Bb2 Nf6 3.a3 Nc6).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3).

4.d3 Nf4 5.Nd2 e6 6.g3 Nd5 7.Bg2 f6 8.Ngf3 Bd6? (8...Nb6 9.c4+=) 9.0-0 Be5? (better is 9...Bf8+/–) 10.d4+- (10.Ne5?! Ne5 11.e4 Ne7+/–) 10...Bd6 11.c4 Nb6 12.c5 Bc5 13.dc5 Nd5 14.e4 Nde7 15.Nc4 d5 16.ed5 Nd5 17.Re1 0-0 18.Nd4 Nd4 19.Qd4 e5 20.Qd5 Qd5 21.Bd5 (21.Bd5 Kh8 22.f4+-) 1–0. golfx – milanio, kurnik, 2011.

4.e3 e6 5.Nf3 d6 6.c4 Nf6 7.Be2 e5 8.d4 e4 9.Nfd2 Bf5 10.Nc3 Qe7 11.0-0 h5 12.g3 (12.Qa4 Qd7+/–) 12...Bg4 (12...Bh3 13.Re1+=) 13.Re1 (13.Bg4 hg4 14.Nd5 Qd7 15.Nf6 gf6 16.Ne4 Bg7+/–) 13...Be2+= 14.Qe2 h4 15.Rac1 hg3 16.fg3 Qe6? (better is 16...a5 17.b5 Na7+=) 17.d5+- Qh3 (17...Qe7 18.dc6 bc6 19.Qg2+-) 18.dc6 bc6 19.Nce4 Ng4 20.Nf1 Rh5 (20...a5 21.b5 Rb8 22.Qf3+-) 21.Nf2 Nf2 22.Qf2 Rf5 (22...c5 23.e4 cb4 24.e5+-) 23.Qg2 Qg2 24.Kg2 0-0-0 25.e4 Rg5 26.Ne3 g6 27.Nc2 Bh6 28.Rcd1 Rg4 29.c5 dc5 30.Rd8 Kd8 31.bc5 Kc8 32.Nb4 Bd2 33.Re2 Bb4 34.ab4 f5 35.e5 Rb4 36.e6 Kd8 37.Bf6 Ke8 38.e7 Rd4 39.Bd4 a5 40.Be5 a4 41.Bc7 g5 42.Bd6 f4 43.gf4 gf4 44.Ra2 f3 45.Kf3 a3 46.Ra3 Kd7 47.Ra8 Ke6 48.e8Q Kd5 49.Qe4 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.d3 e5 5.Nd2 Be6 6.g3 g6 7.Bg2 Bg7 8.Ngf3 0-0 9.0-0 Qd7 10.e3 h6 11.c4 Bh3 12.Bc3 Bg2 13.Kg2 b6 14.b5 Ne7 15.Bb4 a6 16.a4 c5 17.bc6 Nc6 18.Bc3 Ne7 19.Qc2 Rfb8 20.Ne4 Ne4 21.de4 f5 22.ef5 Nf5 23.e4 Ne7 24.Rfd1 Rc8 25.Qd3 Rc6 26.Bb4 Rac8 27.Bd6 Rc4 28.Be5 Qd3= 29.Rd3 Re4 30.Bg7 Kg7 31.Rd6 Rc6 32.Rd7 a5 33.Nd4 Rc4 34.Nc6?? Kf6 35.Ne7 Re7=+ 36.Rd6 Re6 37.Re6 Ke6 38.f4 Kf5 39.h3 g5 40.fg5 hg5 41.Kf3 Rc3 42.Kg2 Ke4 43.Ra2 Kd3 44.h4 gh4 45.gh4 Rc4 46.Kg3 Kc3 47.h5 Kb3 48.h6?? Ka2–+ 49.h7 Rc8 50.Kg4 Ka3 51.Kg5 Ka4 52.Kg6 b5 53.Kg7 b4 54.h8B Rh8! 55.Kh8 b3 56.Kg7 b2 57.Kf6 b1Q 58.Ke5 Qd3 59.Kf6 Qe4 60.Kg7 Qf5 61.Kh8 Qg4 62.Kh7 Kb5 63.Kh6 Kc6 64.Kh7 Kd6 65.Kh8 Ke6 66.Kh7 Kf6 67.Kh8 Qg7# 0–1. golfx – rak69, kurnik, 2011.

4.d4 Bf5 5.Nf3 h6 6.e3 a6 7.Bd3 Bd3 8.Qd3 e6 9.0-0 Be7 10.c4 0-0 11.d5 Nb8 12.Nc3 e5 13.Nh4 Nd5 14.Ng6! Nc3 15.Nf8 Na4?? 16.Qh7 Kf8 17.Qh8# 1–0. Trkn – guest3419, ICC, 2004.

4.b5?? Ng6 5.e3 c6 (5...e5 6.d4 e4 7.d5=) 6.Nf3 d5 7.a4 e6 8.Be2 Bd6 9.0-0 (9.h4 h5=) 9...0-0 (9...e5 10.d3=) 10.d4= e5?? (better 10...a6=) 11.de5+- (11.Ne5?! Qc7+=) 11...Bc7 (11...Ne5 12.Be5 Be5 13.Ne5+-) 12.ef6 Re8 (12...gf6 13.c4+-) 13.fg7 Bg4 14.h3 (14.Nbd2 f6+-) 14...Bf5 (14...Bf3 15.Bf3 (worse 15.gf3 Qg5 16.Kh1 Qf5 17.f4 Qh3 18.Kg1 Nf4 19.ef4 Bf4 20.Re1 Qh2 21.Kf1 Qh1) 15...Be5 16.Be5 Ne5 17.Nc3+-) 15.Nbd2 (15.c4 Ne5 16.cd5 cd5+-) 15...Qd6 (15...f6 16.c4 dc4 17.Nd4+-) 16.c4 Nh4 17.g3 (17.bc6 bc6 18.cd5 Bh3+-) 17...Bh3 (17...Nf3 18.Bf3 (worse 18.Nf3 Bh3 19.Re1 Ba5+-) 18...Bh3 19.Re1+-) 18.Nh4 Re6 (18...Re3 19.Bf3 (19.fe3?? Qg3 20.Kh1 Qh2) 19...Rd3 20.Qe2 Bf1 21.Rf1+-) 19.Bg4 Bg4 20.Qg4 Rh6 (20...Qb4 21.Bc1 Be5+-) 21.Nf5 Qe6 (21...Rg6 22.Nd6 Rg4 23.Nf5+-) 22.Nh6 (better 22.Qg5 Qf5 23.Qf5 Rd8+-) 22...Qh6 23.Kg2 (better 23.cd5 cd5 24.Rac1 Qd6+-) 23...Re8 (23...Qe6 24.Qe6 fe6 25.Rac1+-) 24.Rh1 Qe3 25.fe3 Re3 (25...Bd6 26.Rh7! f6 27.Qg6 Re3 28.Rh8) 26.Rae1 (26.Qc8 Bd8 27.Qd8 Re8 28.Qe8) 26...Rg3 (26...Re6 27.Re6 Bd6 28.Re8 Bf8 29.gf8Q) 27.Qg3 Bg3 (27...Be5 28.Re5 h5 29.Re8 Kh7 30.Rh5) 28.Re8 1-0. allyouneedisluft (2605) - Burattinaio (2505), Rated Bullet game, lichess.org, 2017. (=1.a3 Nf6 2.b4 Nc6 3.Bb2)

4.e3?? Ng6= 5.Nh3 (5.Nf3 d5=) 5...a5 6.b5 d5 7.Ng5 h6 (7...e5 8.Nf3 Bd6 9.Be2=+) 8.Nf3= e6 9.d4 Bd6 10.Nbd2 0-0 11.Bd3 c6 12.h4 (12.bc6 bc6 13.Ne5 Ne7+=) 12...Re8 (12...cb5 13.Bb5 Qb6 14.c4=) 13.h5 (13.bc6 bc6 14.Bg6 fg6+=) 13...Ne7 14.e4 (better 14.c4=) 14...Nf5?? (better 14...de4 15.Ne4 Ne4 16.Be4 cb5=+) 15.ef5 ef5 16.Ne5 Ne4 17.Ndf3?? (better 17.0-0+-) 17...f6= 18.0-0 fe5 19.Ne5 Be5 (19...c5 20.c4=) 20.de5= Be6 21.c4 (21.Rb1 c5=) 21...dc4=+ 22.Be4 fe4 23.Qe2? (23.bc6 bc6 24.Qd8 Rad8=+) 23...Bd5 (better 23...Qd3 24.Rfe1 cb5 25.Qe4 Qe4 26.Re4 b4 27.ab4 ab4-+) 24.Rad1 Qg5 25.bc6 (25.Rfe1 Re6-/+) 25...bc6-/+ 26.Qe3 (26.Rfe1!?-/+) 26...Qh5-+ 27.Qd4 (27.Rd2 Reb8-+) 27...Rab8 28.e6 (28.Bc3 Rb3-+) 28...Qg6 29.e7 (29.Rd2-+) 29...e3 30.f3 (30.Qg7 Qg7 31.Bg7 Kg7-+) 30...e2 31.Rfe1 (31.Rde1 ef1R 32.Kf1 Rb3-+) 31...ed1Q 32.Rd1 Re7 33.Qf4 (33.Qf2 Bf3! 34.Qf3 Rb2-+) 33...Rbe8 (33...Rb2 34.Rd2 Rd2 35.Qb8 Kh7 36.Qb1 Re1 37.Kh2 Rb1 38.Kh3 Rh1) 34.Rf1 (34.Qg4 Qg4 35.fg4-+) 34...Re2 35.Qg4 Qg4 (35...Rb2?! 36.Qg6 Re5 37.Qg4-+) 36.fg4 Rb2 (36...Rg2 37.Kh1 Ree2 38.Rf8 Kf8 39.Bg7 Kg7 40.a4 Rg4) 37.Kh1 (37.Rc1 Ree2 38.Kf1 Rg2 39.g5 Rh2 40.Rc2 Rb1 41.Rc1 Rc1) 37…Ree2 (37...Ree2 38.Rg1 Bg2 39.Kh2 Bf1 40.Kg3 Rb3 41.Kf4 g5 42.Kf5 Kg7 43.Rf1 Rb5; 37...Rg2 38.Rd1 Rd2 39.Kg1 Rd1 40.Kf2 Rd2 41.Kf1 c3 42.a4 Bc4 43.Kg1 Re1) 0-1. allyouneedisluft (2590) - Burattinaio (2520), Rated Bullet game, lichess.org, 2017. (=1.a3 Nc6 2.b4 Nf6 3.Bb2)

4.Be5 d6 5.Bf6 ef6 6.e3+-.

4.Be5 d6 5.Bf6 ef6 6.Nf3+-.

4.d3 d5 5.Nd2 Be7 6.Ngf3 0-0 7.g3 Nh5 8.Bg2 Bf6 9.Bf6 Nf6 10.c4 dc4 11.Nc4 Nd4 12.Nd4 Qd4 13.0-0 Rb8 14.e3 Qd8 15.d4 c6 16.Ne5 Nd7 17.Nd7 Bd7 18.Qb3 Qe7 19.Rac1 e5 20.de5 Qe5 21.Rfd1 Be6 22.Qc3 Qc3 23.Rc3 Rfd8 24.Rcd3 Rd3 25.Rd3 g6 26.Rd6 Kg7 27.f4 Kf6 28.e4 Ke7 29.e5 f6 30.Rd2 fe5 31.fe5 Rd8 32.Rd8 Kd8 33.Kf2 Ke7 34.Ke3 Bf5 35.Kd4 Ke6 36.h3 Bc2 37.g4 Bb3 38.Be4 a6 39.h4 Bd5? 40.Bd3?? Bf3 41.g5 Bg4 42.Bc4 Ke7 43.Bg8 b6 44.a4 Kf8 45.Bc4 Bc8 46.e6?? Ke7+= 47.Ke5 b5 48.ab5 cb5 49.Bb3 Bb7 50.Bc2 Bf3 51.Bd3 Bb7? 52.Be2 Bg2 53.Bg4 Bb7 54.Kd4 1–0. golfx – bobbox, kurnik, 2011.

4.d3 Bd6 5.Nd2 0-0 6.g3 b6 7.Bg2 Bb7 8.Ngf3 h6 9.0-0 e5 10.e3 Be7 (10...a5 11.b5 Na7 12.a4+/–) 11.c4 d6 12.b5 Nb8 13.Nb3 Nbd7 14.e4 Nc5 15.Nc5 dc5 (15...bc5!? 16.Nd2 c6+=) 16.Qc2 Ng4 17.Nh4 (better is 17.h3 Nf6 18.Ne5+/–) 17...Bh4= 18.gh4 Qh4 19.f3?? (better is 19.h3 Nf6 20.Be5+=) 19…Qh2# 0–1. golfx – rasgador, kurnik, 2012.

4.e3 a6 5.c4 b5 (5...Be7 6.Nf3=) 6.Qc2 (better is 6.cb5!? ab5 7.Bb5+/–) 6...bc4 7.Bc4 d5 8.Ba2 Bd7 9.Nf3 a5 10.b5 Ne7 11.a4 Nf5 12.0-0 Bb4 13.Nc3 Bc3? (better is 13...c6!?=) 14.Qc3 0-0 15.Rac1 Nd6 16.Ne5 Nde4 (better is 16...Nfe8!?+/–) 17.Qc7+- Qc7 18.Rc7 Be8? (18...Rac8 19.Rfc1 Rc7 20.Rc7 Rc8+-) 19.d3 Nd6 20.Ba3 Rc8 (20...Rd8 21.Rb1+-) 21.Rc8 Nc8 22.Bf8 Kf8 23.Rc1 Nd6 24.Rc6! Nf5?? 25.h3 Bc6 26.Nc6 g6 27.b6 Nd6 28.Na5 Nd7 29.b7 e5?? 30.Bd5 f5 31.Nc4 Nc4 32.dc4 Ke7 33.a5 Kd6 34.a6 Kc7 35.a7 Nb6 36.a8Q Na8 37.ba8Q (37.ba8Q Kd7 38.Qc6 Kd8 39.Qb7 Ke8 40.Qf7 Kd8 41.Be6 h6 42.Qd7#) 1–0. slax1 – tyk, kurnik, 2011.

4.e3 b6 5.Nf3 Bb7 6.c4 Be7 7.d4 d6 8.Bd3 Qd7 9.Nbd2 Bd8 10.0-0 Ke7 (10...0-0!?+/–) 11.Qc2 a5 12.b5 Na7 13.Rfe1 c6 14.bc6 Nc6 15.d5! Ne5 (15...ed5 16.Bf6 Double attack) 16.Ne5 de5 17.Be5 Bc7 18.Bc7 Qc7 19.de6 fe6 20.Nf3 (20.Rab1 Rad8+-) 20...Rhd8 21.Red1 Rd6 22.Be2 Rd1 23.Rd1 Bc6 24.Nd4 Qb7? 25.Nc6 Qc6 26.Bf3 Ne4 27.Be4 Qe4 28.Qe4 Rc8 29.Qd4 Rc7 30.g3 g6 31.Kg2 h5 32.a4 Ra7 33.Qd6 Kf6 34.Rc1 g5 35.c5 bc5 36.Rc5 Rb7 37.Rc7 Rb8 38.Qd7 g4 39.Qg7 Kf5 40.Qf7 Ke4 41.Qf3 gf3=+ 42.Kh3 Rb2 43.Rh7? Ke5?? 44.Rh6 Ra2 45.Rh5 Kd6? 46.Rh4?? Ra4?? 47.Ra4+- Kc5 48.Ra5 Kb4 49.Ra1 Kc3 50.Kg4 Kd2 51.Kf3 (51.Kf3 Kc3 52.Rc1 Kd2 53.h4 Kc1 54.h5+-) 1–0. Fournier,Frederic (1950) – karoly (1990), Active Blind, 2007.

4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nc6).

4.e3 d6 5.c4 e5 6.Nf3 Bg4 7.Be2 h6 8.h3 Bf5 9.d3 Be7 10.Nc3 0-0 11.e4 Bh7 12.Nd5 Nd5 13.cd5 Nb8 14.Rc1 Nd7 15.0-0 Rc8 16.Re1 Nf6 17.Bf1 Bg6 18.Nh4 Bh7 19.Nf3 Bg6 20.Qc2 Nh5 21.g3 Nf6 22.Bg2 Nd7 23.d4 ed4 24.Bd4 Bf6 25.Qc3 Bd4 26.Nd4 Ne5 27.Nf3 Nf3 28.Bf3 Qg5 29.Bg2 c5 30.dc6 Rc6 31.Qb2 Rc1 32.Qc1 Qe5 33.Qc7 Qd4 34.Qb7 Qd2 35.Rf1 Qd4 36.Qd5 Qb2 37.Qd6 Qa3 38.Qc5 Rb8 39.Rb1 a6 40.Qc1 Rb4?? 41.Qa3+- Rb1 42.Kh2 Rb6 43.Qa5 Rd6 44.h4 f6 45.e5 fe5 46.Qe5 Rf6 47.f4 Bf7 48.Bd5 Bd5 49.Qd5 Kh7 50.Kh3 Rb6 51.Qa5 Rd6 52.h5 g6 53.hg6 Kg6 54.g4 Rd3 55.Kh4 Rd6 56.Qf5 Kg7 57.Qe5 Rf6 58.g5 hg5 59.fg5 a5 60.Qf6 Kg8 61.g6 a4 62.Qf7 Kh8 63.Qh7 (63.Qf8) 1–0. Fournier,Frederic (1870) – saespre (1740), Active, 2011.

4.e3 d6 5.Nf3 Bd7 6.Be2 Qe7 7.d4 g6 8.c4 Bg7 9.Nbd2 0-0-0 10.0-0 Rhe8 11.Qc2 Qf8 12.Bd3 Qh8 13.Rfe1 Re7 (13...Kb8!?+/–) 14.Rac1 Rde8 15.e4 Ng8 16.e5 de5 17.de5 Ne5? (better is 17...f6+-) 18.Ne5 Be5 19.Be5 f6 20.Bb2 e5 21.Ne4 Bc6 22.c5 Be4 23.Be4 c6 24.Rcd1 f5 25.Bd3 Nf6 26.Bc4 Nd7 27.Qb3 Qf8 28.Be6 Re6=+ 29.Qe6?? Re6–+ 30.Rd2 Qe7 31.Red1 Kd8 32.a4 Ke8 33.b5 Nc5 34.bc6 bc6 35.Ba1 Kf7 36.Rb2 a6 37.Rdb1 e4 38.h3 Nd3 39.Rb7 Qb7! 40.Rb7 (40.Rb7 Re7 41.Rb6–+) 0–1. Fournier,Frederic (1920) – chek (1905), Active Blind, 2007.

4.e3 Bd6 5.Bb5 a6 6.Bc6 bc6 7.Nf3 0-0 8.0-0 Ng4 9.h3 Nf6 10.Nc3 a5 11.ba5 Ra5 12.Nd4 Ba6 13.Re1 Nd5 14.Ne4 Qh4 15.Nd6 cd6 16.d3 e5 17.Nf5 Qf6 18.c3?? g6?? 19.e4 gf5=+ 20.c4? Nf4–+ 21.Bc3 Rc5 22.Bb4 Nh3?? 23.Kf1?? Nf2?? 24.Kf2=+ Qh4 25.Kg1= fe4 26.Bc5 dc5 27.Re4 Qf6? 28.Qe1 d5 29.Re5 dc4 30.Qg3 Kh8 31.dc4 Bc4 32.Rae1+/– Rg8 33.Qc3 Bd5+= 34.R1e2 Bf3 35.Rf2+/– Rg2?? 36.Rg2+- Bg2 37.Re8 Kg7 38.Qf6 Kf6 39.Kg2 c4 40.Rc8 Ke5 41.Rc6 Kd4 42.a4 c3 43.a5 Kd3 44.a6 c2 45.a7 Kd2 46.a8Q c1Q 47.Qd8 Ke3 48.Rc1 f5 49.Qe7 Kf4 50.Rc4 1–0. ahmed sharkawy_1 – madidog, ChessWorld.net, 2005.

4.e3 Bd6 5.Nf3 0-0 6.d4 h6 7.c4 a6 8.Bd3 b6 9.Nbd2 Bb7 10.0-0 Qe7? (10...Re8 11.Re1+/–) 11.e4?? (11.c5!? bc5 12.dc5 Bc5 13.Bf6 gf6 14.bc5 Qc5+-) 11...Nh5? (better is 11...Bf4!?+=) 12.e5+- Be5 13.Ne5 Ne5 14.de5 Qf6 15.ef6 gf6 16.Qh5 Bg2 17.Qh6 Ra7 18.Qh7 1–0. Fournier,Frederic – koko11, Active, 2008.

4.e3 e5 5.Bb5 Ne7 6.Be5 c6 7.Bc4 Nfd5 8.Nc3 d6 9.Bd4 Nf5 10.Nd5 cd5 11.Bd5 Nd4 12.ed4 Qe7 13.Qe2 Be6 14.Be6 fe6 15.Nf3 0-0-0 16.0-0 g5 17.h3 Kb8 18.Rfe1 h5 19.Qe6 Rd7 20.Ng5 Rg8 21.Qg8 Qg7 22.Re8 Kc7 23.Ne6 Kb6 24.Ng7 Be7 25.Re7 Re7 26.Qd8 1–0. mickster the king – dugmak, ChessWorld.net, 2005.

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

4.d3 Bg7 5.Nd2 0-0 6.g3 e5 7.Bg2 d6 8.Ngf3 Bg4 9.0-0 Bf3 10.Nf3 e4 11.de4 Ne4 12.Bg7 Kg7 13.c4 Qf6 14.Qd3 Rfe8 15.Rac1 a6 16.e3 Ne5?? (16...Rad8 17.Nd2 Nd2 18.Qd2+=) 17.Ne5 (better is 17.Qe4 Nc6 18.Qd3+-) 17...Qe5+= 18.Rfe1 Rab8 19.Qd4 c5 20.bc5 dc5 21.Qe5 Re5 22.Red1 Nf6 23.Rb1 b5 24.a4 b4 25.a5 Rf5 26.Rd6 Ng4 27.Rb2 Re8 28.Ra6+/– Re6? 29.Re6+- fe6 30.a6 Rf7 31.Bb7 Rf8 32.a7 Ne5 33.a8Q Ra8 34.Ba8 Nd3 35.Rb3 Ne5 36.Kf1 Nc4 37.Ke2 Ne5 38.f4 Ng4 39.h3 Nf6 40.Kd3 Nd5 41.Kc4 Nb6 42.Kc5 Na8 43.Kc6 Kf6 44.Rb4 e5 45.Rb8 ef4 46.gf4 Kf5 47.Ra8 Ke4 48.Re8 Kf3 49.Re7 h5 50.Re6 h4 51.Rg6 Ke3 (51...Ke3 52.f5 Ke4+-) 1–0. golfx – ajra100, kurnik, 2011.

4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 Nc6).

4.Bc3 c6 5.bc6 bc6 6.e3 Rb8 7.Nf3 d5 8.d4 (8.Nd4 Bd7=) 8...e6 (8...Ne4 9.Nfd2 Nc3 10.Nc3=+) 9.Nbd2= Ba3 10.Rb1 Bd7?? (better 10...Rb1 11.Qb1 Bd6+=) 11.Rb8+- Qb8 12.Qb1?? (12.Ba5 Qb2+-) 12...Qb1?? (better 12...Nb7+=) 13.Nb1+- Nc4 (13...Bd6 14.Ba5 Ke7 15.c4+-) 14.Bc4 dc4 (14...Bd6 15.Bd3 Ke7+-) 15.Na3 Ne4 16.0-0 (better 16.Bb4+-) 16...Nc3+- 17.Nc4 0-0 (17...Ke7 18.Nfe5 c5 19.Nd7 Kd7 20.Ne5 Ke7 21.dc5+-) 18.Nd6 (18.Nfe5 Be8+-) 18...Rb8 (18...f6!?+-) 19.Ne5+- Be8 (19...f6 20.Nd7 Rd8 21.Nf6 gf6+-) 20.h3 (better 20.Ne8!? Re8 21.Nc6+-) 20...f6+- 21.Nd3 Na2? (better 21...Bg6!?+-) 22.Ra1+- Nc3 23.Ne8 Re8 24.Ra7 Ne4 (24...Nd5 25.Rb7+-) 25.Rc7 Ra8 (25...e5 26.Rc6 ed4 27.ed4+-) 26.Rc6 Ra3 (26...Ra2 27.g4+-) 27.Rc8 (27.Re6!? Nd2 28.h4 Rc3+-) 27...Kf7 28.Rc7 Kg6 (28...Kg8 29.Nf4 Ra6 30.Nh5+-) 29.Nf4 Kf5 (29...Kh6 30.Ne6 Rc3 31.d5 Rc7 32.Nc7+-) 30.Rg7 (better 30.g4 Kg5 31.Ne6 Kg6+-) 30...Ra1 31.Kh2 e5 (31...Nf2 32.Rh7 Nd1 33.Rh5 Ke4 34.Ne6 Ne3 35.Nc5 Kf4 36.Rh4 Kg5 37.Rh8+-) 32.de5 (32.g4) 32...fe5 33.Rf7 Nf6 (33...Kg5 34.Nd3 Nd2 35.f4 (35.Ne5?! Nf1 36.Kg1 Nd2 37.Kh2 Nf1 38.Kh1 Nd2 39.Kh2=; 35.Rh7?! Nf1 36.Kg1 Ne3 37.Kh2 Nf1 38.Kh1 Ne3 39.Kh2 Nf1 40.Kg1 Ne3 41.Kh2=) 35...Kh6 36.Ne5 Nf1 37.Kg1 Ne3 38.Kf2 Nd1 39.Ke2 Nc3 40.Kd3+-) 34.Nd5 (34.Nh5 Ra6+-) 34...Ra6 (34...Ke6 35.Rf6 (worse 35.Nf6 Kf7 36.Nh7 Kg6 37.Nf8 Kf7+-) 35...Kd5 36.f3+-) 35.Ne7 (better 35.Rf6 Rf6 36.g4 Ke6 37.Nf6+-) 35...Ke6 36.Rh7?? (better 36.Rg7+-) 36...Nh7–+ 37.Kg3?? (better 37.Ng6–+) 37...Ke7 38.Kg4 (38.f4 Ra3 39.Kf3 ef4 40.Kf4 Nf6–+) 38...Ra2 39.f4 ef4 (39...Rc2 40.g3–+) 40.ef4 (40.Kf4 Rc2 41.g4 Nf6–+) 40...Rc2 41.f5 (41.Kg3 Ke6 42.Kf3 Rc3 43.Kf2 Kf5–+) 41...Rg2 42.Kf4 Rh2 43.Kg4 Kf6 44.h4 Nf8 45.h5 Nh7 46.h6 Rh6 47.Kf4 Rh1 48.Kg4 (48.Ke4 Ng5 49.Kd3 Kf5–+) 48...Rf1 49.Kg3 Rf5 50.Kg4 Rf1 (50...Ng5 51.Kg3 Ne4 52.Kg4 Rf2 53.Kh4 Kf5 54.Kh3 Rd2 55.Kh4 Rh2) 51.Kg3 (51.Kh3–+) 51...Kg5 52.Kg2 Rf8 (52...Rf5 53.Kh2 Kg4 54.Kg2 Nf6 55.Kh2 Kf3 56.Kh1 Kf2 57.Kh2 Rh5) 53.Kg3 Kf5 (53...Nf6 54.Kf3 Re8 55.Kf2 Kf4 56.Kg2 Re2 57.Kg1 Kf3 58.Kf1 Ne4 59.Kg1 Re1 60.Kh2 Ng3 61.Kh3 Rh1) 54.Kf3–+ Ke5 55.Ke3 Kd5 56.Kd3 Ke5 (56...Rf3 57.Kd2 Kd4 58.Kc2 Nf6 59.Kb2 Rf2 60.Kb3 Nd5 61.Ka3 Kc4 62.Ka4 Ra2) 57.Kc3?? (57.Ke3 Nf6 58.Kd3–+) 57...Rd8 58.Kc4 Ke4 59.Kc5 Ke3 60.Kc4 Ke4 (60...Nf6 61.Kb5–+) 61.Kc5 Rd1 62.Kc6 Ke3 63.Kc5 Ke4 (63...Nf6 64.Kc6–+) 64.Kc6 Ke5 65.Kc7 (65.Kc5–+) 65...Ke6 (65...Kd5 66.Kc8 Kc6 67.Kb8 Rd8 68.Ka7 Ng5 69.Ka6 Ra8) 66.Kc8 (66.Kc6 Rc1 67.Kb5 Nf6 68.Kb4 Ne4 69.Ka4 Kd5 70.Ka3 Kc4 71.Kb2 Rd1 72.Kc2 Rd2 73.Kb1 Kb3 74.Kc1 Re2 75.Kd1 Nc3 76.Kc1 Rc2) 66...Ke7 (66...Kd6!? 67.Kb8 Rb1 68.Ka7 Kc6 69.Ka8 Kc7 70.Ka7 Ra1) 67.Kc7 Rc1 (67...Rf1 68.Kb6 Kd6 69.Kb5 Rf4 70.Kb6 Rb4 71.Ka6 Kc6 72.Ka7 Re4 73.Kb8 Kb6 74.Kc8 Nf6 75.Kd8 Re8) 68.Kb6–+ Kd6 69.Kb5 Kd5 70.Kb4 Kd4 71.Kb3 Rc8 72.Kb2 (72.Kb4 Rb8 73.Ka5 Rb3 74.Ka4 Kc4 75.Ka5 Nf6 76.Ka6 Kc5 77.Ka7 Kc6 78.Ka8 Nd7 79.Ka7 Ra3) 72...Kd3 (72...Nf6 73.Ka2 Kc3 74.Kb1 Rb8 75.Kc1 Rh8 76.Kb1 Rh1 77.Ka2 Nd5 78.Ka3 Ra1) 73.Kb1 (73.Kb3 Rc4 74.Kb2 Rc3 75.Kb1 Rb3 76.Ka2 Kc2 77.Ka1 Ra3) 73...Kd2 (73...Rb8 74.Ka2 Kc3 75.Ka1 Kc2 76.Ka2 Ra8) 74.Kb2 Rb8 (74...Rc3 75.Ka2 Kc1 76.Ka1 Ra3) 75.Ka3 Kc3 76.Ka4 Kc4 77.Ka5 Rb1 78.Ka6 Kc5 79.Ka7 Kc6 80.Ka6 (80.Ka8 Kc7 81.Ka7 Ra1) 80…Ra1 0–1. sdfkgfkftk – sythen, lichess.org, 2020.

4.c4 Nc4 5.Qc2 (5.Bf6 ef6 6.e3 d5–/+) 5...Nb2–+ 6.Qb2 a6 (6...d5 7.Nf3–+) 7.ba6 Ra6 8.e4 (8.Nf3–/+) 8...Ne4?? (8...Rb6 9.Qc2 Ne4 10.Nf3–+) 9.g4?? Rb6–+ 10.Qe5 Re6 11.Qf4 g5 12.Bd3 gf4 13.Nf3 d5 14.0-0 Rg8 0–1. figbash – bharlow, net–chess.com, 2005.

4.d3 c6 5.a4 e6 6.Qd2 cb5 (6...d5 7.e3=) 7.ab5+= b6 8.c4?? (8.e4 a6+=) 8...Bb7?? (8...Nb3 9.Qg5 Na1 10.Ba1-+) 9.Nc3? (9.Ra4 a6=+) 9...d5 (9...Nb3 10.Qd1 Na1 11.Ba1-+) 10.e3? (10.Qc2 dc4 11.e4 Bb4-/+) 10...dc4 (10...Nb3 11.Qd1 Na1 12.cd5 Nd5 13.e4 Nc3 14.Bc3 Be4 15.de4 Qd1 16.Kd1 Rd8 17.Ke2-+) 11.dc4? (better 11.Ra4!?-/+) 11...Qd2-+ 12.Kd2 Nc4 13.Bc4 Bb4?? (better 13...Bg2 14.Nge2 Bh1 15.Rh1 Ng4=) 14.Nf3 (14.f3 0-0+-) 14...Ne4 15.Kc2 Nf2 16.Rhf1 Ne4 (16...Ng4 17.Nd1+-) 17.Ne4 Be4 18.Bd3?? (better 18.Kb3 Be7 19.Ra4+- (19.Bg7?! Rg8 20.Bd4 Rg2+-)) 18...Rc8= 19.Kb3 Bd3 20.Rfd1 Bc2 21.Kb4 Bd1 22.Rd1 0-0 (22...f6 23.e4=) 23.Be5 (23.Rd7 Rc2 24.Bd4 Ra8=) 23...Rc5 (23...f6 24.Bd6 Rfd8 25.Rd3=+) 24.Bd6 (better 24.Rd7 Rfc8 25.Ra7 Rc4 26.Ka3=) 24...Rc2?? (better 24...Rd8=) 25.Bf8+- Kf8 26.g4 Ke7 27.Ne5 Rh2 28.g5 (28.Nc6 Kf6 29.Rf1 Kg5 30.Rf7 g6+-) 28...f6 29.Rd7?? (29.gf6 gf6 30.Nc4 Ra2+-) 29...Kf8?? (better 29...Ke8=) 30.gf6+- gf6 31.Rf7 Ke8 (31...Kg8 32.Rf6 Rh4 33.Kc3+-) 32.Rf6 Ke7 (32...Rh4 33.Nc4+-) 33.Rf4 (33.Rf7 Ke8 34.Ra7 Rb2 35.Kc4 Rc2 36.Kd3 Rc5+-) 33...Kd6 (better 33...Rb2 34.Ka4 Ra2 35.Kb3 Re2+-) 34.Nc6?? (34.Nc4 Ke7 35.Rf1 h5+-) 34...Rh3? (better 34...a5 35.Kc4 Rh5+/-) 35.e4 Rh5? (35...a5 36.Kc4+-) 36.Na7 (36.e5 Re5 37.Ne5 Ke5+-) 36...e5? (36...Rh1 37.Nc6 Rb1 38.Kc4 Rc1 39.Kd3 Rd1 40.Ke3 Re1 41.Kd2+-) 37.Rf7 (better 37.Rf6!? Ke7 38.Rb6 Rh4+-) 37...Rh4 38.Rf6 Ke7 (38...Kc7+-) 39.Rb6 Re4 40.Kc5 Rd4 (40...Rf4+-) 41.Nc6 Ke6 42.Rb8 (42.Nd4 Kf7 43.Rd6 h6 44.b6 Kf8 45.b7 Ke8 46.b8Q Kf7 47.Qc7 Ke8 48.Rd8) 42...Rd5 43.Kc4 e4 (43...Rd7+-) 44.Re8 Kd6 (44...Kd6 45.Rd8 Ke6 46.Rd5 e3+-). EvgeniyR – Datvid, Rated Blitz game, lichess.org, 2019.

4.d3 c6 5.c4 Qb6 A) 6.a4 A1) 6...d6 7.Nd2 (7.Nf3 e5 8.e3 Be7 9.Be2 0-0 10.0-0; 7.e3 e5 8.Nf3 Be7 9.Be2 a6 10.Nc3; 7.Bf6 ef6 8.bc6 Nb3 9.cb7 Bb7 10.Ra2) 7...e5 8.Ngf3 Be7 9.e4 Bg4 10.h3; A2) 6...d5 7.cd5 (7.Qc2 Bg4 8.h3 Bd7 9.e4 e6 10.e5; 7.e3 dc4 8.dc4 Bf5 9.Nf3 e6 10.Be2) 7...Nd5 8.e4 Nf6 9.Bc3 e6 10.Nf3; B) 6.Nc3 e5 7.Nf3 (7.e3 cb5 8.cb5 d5 9.Nf3 Bd6 10.Rc1; 7.Rb1 cb5 8.Nb5 Qb5 9.cb5 Bb4 10.Qd2; 7.Qc2 d5 8.bc6 bc6 9.Na4 Bb4 10.Bc3) 7...e4 8.Nh4 e3 9.fe3 Ng4 10.Qd2.

4.d3 c6 5.c4 d5 6.cd5 (6.Qd2 A) 6...b6 7.cd5 (7.e3 cb5 8.cb5 Bd7 9.Nc3 e6 10.e4) 7...Qd5 8.Nc3 Qh5 9.bc6 Nc6 10.d4; B) 6...cb5 7.cb5 Bd7 8.Bc3 b6 9.Qb2 Nb7 10.Be5; 6.Nd2 A) 6...dc4 7.dc4 e6 8.Bc3 Bc5 9.Qa4 Bb6 10.e4; B) 6...e6 7.e4 (7.Ngf3 cb5 8.cb5 Bd7 9.Rb1 Bc5 10.e3) 7...cb5 8.cb5 Bb4 9.e5 Nd7 10.Ngf3; C) 6...cb5 7.cb5 e6 8.e4 Bc5 9.e5 Nd7 10.Ngf3) 6...Nd5 (6...cb5 7.e4 (7.Bf6 ef6 8.e4 Bb4 9.Nd2 0-0 10.Ngf3; 7.a4 Qd5 8.Nc3 Qd4 9.ab5 Qb4 10.Qb1) 7...e6 8.Qf3 Be7 9.Bf6 Bf6 10.d4) 7.e4 (7.bc6 Nc6 8.Nf3 Bg4 9.Nbd2 Rc8 10.Qa4) 7...Nf6 8.Nc3 (8.Nf3 cb5 9.Nbd2 Bd7 10.Rc1) 8...e5 9.Nf3 Bg4 10.Be2 Bf3 11.Bf3 Bb4 (11...cb5 12.Nb5 Bb4 13.Nc3=+) 12.0-0= 0-0 13.a3 Bc5 14.Rc1 (14.Ne2 Re8 15.Rc1 Bb6=) 14...a6 (14...Bd4 15.bc6 Nc6 16.Qb3=+) 15.bc6 (15.Ne2!? Qe7 16.d4 ed4 17.Nd4+=) 15...Nc6=+ 16.Na4 Bd4 17.Qb3 Bb2 18.Nb2 (18.Qb2 Ra7=+) 18...Nd4–/+ 19.Qd1 (19.Qc3–/+) 19...Nf3 (better 19...b5!?–/+) 20.Qf3=+ b5 21.Rfd1 (21.Qf5 Qd4 22.Rc2 Rab8=+) 21...Qd4 22.Rc2 Rac8 23.Rdc1 Rc2 24.Rc2 g6 ½–½. Wall,Bill – JMG, Microsoft Gaming Zone, 1997.

4.d3 c6 5.c4 d6 6.Bc3 cb5 7.cb5 Bd7 8.Qd2 b6 9.Qb2 Rc8 10.e4.

4.e3 a6 5.Nf3 c5 (5...ab5 6.Bb5 c6 7.Be2=) 6.Be2 (6.Nc3 d5=) 6...Qb6 (6...ab5 7.Bb5 Qb6 8.Na3+=) 7.Nc3 ab5 8.Nb5 c4 9.a4 d5?? (better is 9...d6+=) 10.Bd4+- Qd6 (10...Qd8 11.Be5 Bf5 12.Nc7 Kd7 13.Na8 Qa8+-) 11.Nd6 ed6 12.Bf6 gf6 13.Nd4 Bg7 14.Bf3 0-0 (14...Be6 15.Nb5 0-0 16.Nc7+-) 15.Bd5 Re8 (15...f5 16.Qf3+-) 16.Qh5 Bd7 (16...Re7+-) 17.Qf7 Kh8 18.Qd7 Rad8 19.Qf7 Rf8 20.Qh5 (better is 20.Qc7 Rc8 21.Qa5 Rc5+-) 20...Rb8 21.Be4 Rbe8 22.Qh7 1–0. MrkT – thangasi, Internet, 2005.

4.e3 Nc4 5.Bc4 dc4 6.Qe2=.

4.e3 Nc4 5.Bc4 e5 6.Be5 d6 7.Bb2 d5 A) 8.Bb3 A1) 8...Be6 9.Nf3 a6 (9...Bc5 10.0-0 0-0 11.Be5 a6) 10.Nc3 Be7 11.0-0 (11.a4 0-0) 11...ab5; A2) 8...Bg4 9.Nf3 Be7 10.Be5 0-0 11.Nc3 a6; B) 8.Be2+- B1) 8...a6 9.ba6 ba6 10.Nf3 (10.Nc3 Bd6 11.Nf3 0-0) 10...Bd6 (10...Rb8 11.Be5 Bd6) 11.0-0 (11.Be5 0-0) 11...0-0; B2) 8...Bd6 9.Nf3 0-0 10.0-0 Re8 11.Bd4 (11.Nc3 Bg4) 11...c5.

4.e3 Nc4 5.Bc4 e5 6.Be5 d6 7.Bb2 Bf5 8.Nf3 (8.Bf6 Qf6 9.Nc3 c6 10.Qf3 (10.e4 Bd7 11.bc6 bc6) 10...d5 11.Bd3 Bd3; 8.Bb3 d5 (8...Be7 9.Ne2 d5 10.Nd4 Bg4 11.f3 Be6) 9.Nf3 a6 10.Nd4 Bg6 11.Qe2 Qd7; 8.Ne2 d5 9.Bb3 a6 10.Nbc3 Bc5 11.Nf4 c6) 8...g6 (8...d5 9.Be2+- Bd6 10.0-0 0-0 11.Nd4 Bd7+- (11...Qd7)) 9.Nd4 (9.0-0 Bg7 10.Nd4 Bg4 11.f3 Bc8; 9.Bd5 Bc8 10.c4 Bg7 11.0-0 0-0) 9...Bg7 (9...Bg4 10.f3 Bc8 11.Nc3+- (11.0-0 Bg7; 11.e4 Bg7) 11...d5) 10.Nf5 gf5 11.Qf3 (11.Nc3 Rg8) 11...Ng4 (11...d5 12.Bb3+-) 12.Qf5 (better 12.Bg7 Rg8 13.Bd4 Ne5 14.Be5 de5 15.Qf5 Qe7+-) 12...Rf8 (12...Nf6 13.Bf6 Qf6 14.Qe4 Qe7 15.Qb7 0-0+-) 13.Bg7 Qh4 14.Bf8 Qf2 15.Qf2 Nf2 16.0-0 Ng4 17.Rf7 (better 17.Bg7 f6 18.h3 Ne5 19.Rf6 Rd8+-) 17...0-0-0 18.Be6 Kb8 19.Bg4 a6 20.ba6 ba6 21.Na3 (21.Nc3 Kb7 22.Bf3 Ka7 23.Rb1 Rc8 24.Bd6 Rb8 25.Rc7 Rb7 26.Rcb7 Ka8 27.Rh7) 21...Ka7 (21...Kb7 22.Rb1 Kc6 23.Bf3 d5 24.c4 h5 25.cd5 Rd5 26.Nc2 h4 27.Nd4) 22.Rb1 Rb8 (22...Ka8 23.Rc7 Rb8 24.Bf3 d5 25.Bd5 Rb7 26.Rc8 Ka7 27.Rb7) 23.Rc7 Ka8 24.Bf3 Rb7 (24...d5 25.Bd5 Rb7 26.Rc8 Ka7 27.Rb7) 25.Rc8 Ka7 26.Rb7 1–0. Ibarra Jerez,Jose Carlos (2135) – Barbosa Orge,Ivan, Mondariz op 7th, 2000.

4.e3 Nc4 5.Bc4 e5 6.Be5 d6 7.Bb2 Bg4 8.Be2 Be6 9.Nf3 d5 10.0-0 Bd6 11.Nd4 0-0.

4.e3 Nc4 5.Bc4 e5 6.Be5 d6 7.Bd4 Be6 8.Bb3 (8.Be2 a6 9.ba6 ba6 10.Bf3 Rb8 11.Bc6 Bd7) 8...Be7 (8...a6 9.Qf3 ab5 10.Qb7 Rb8 11.Bf6 Rb7; 8...d5 9.Nf3 Be7 10.0-0 a6 11.a4 ab5) 9.Ne2 d5 10.Nbc3 a6 11.ba6 Ra6.

4.e3 Nc4 5.Bc4 e5 6.Be5 d6 7.Bf6 Qf6 A) 8.d4 Be6 9.Be6 Qe6 10.Ne2 (10.Qf3 d5 11.Nh3 c6) 10...d5 (10...Qd5 11.Qd3 c6) 11.Nf4 Qd7; B) 8.Nc3 c6+- 9.Rb1 Qf5 10.bc6 bc6 11.Qf3 Bd7.

4.e3 c5 5.d4 A) 5...cd4 6.Bd4 d6 7.Bd3 e5 8.Bc3 Be6 9.Nd2 Nd5; B) 5...c4 6.d5 e6 (6...Qb6 7.a4 e6 8.de6 fe6 9.Bf6 gf6) 7.Nc3 Qb6 8.Nf3 Bb4 9.a3 Bc3; C) 5...e6 C1) 6.Be2 d5 (6...c4 7.Nf3 Qb6 8.a4 a6 9.Ba3 ab5) 7.Nf3 a6 8.dc5 Bc5 9.ba6 ba6; C2) 6.Ba3 cd4 (6...Qc7 7.Nf3 d5 8.Nbd2 cd4 9.Bf8 Rf8; 6...Qb6 7.c4 d5 8.dc5 Bc5 9.cd5 ed5; 6...d5 7.Nf3 Qb6 8.Nc3 Qc7 9.dc5 Bc5; 6...b6 7.Nf3 d5 8.Bd3 Bd6 9.Nc3 c4) 7.Bf8 Rf8 8.ed4 d5 9.Nf3 Qc7; C3) 6.c4 d5 7.cd5 ed5 8.dc5 Bc5 9.Nd2 Bb4; C4) 6.Nd2 d5 7.dc5 Bc5 8.Bd3 a6 9.a4 0-0; C5) 6.Nf3 d5 (6...c4 7.Be2 Qb6 8.a4 a6 9.Ba3 ab5) 7.dc5 Bc5 8.Bd3 a6 9.a4 0-0.

4.e3 c5 5.Be2 d5 A) 6.Be5 Nd7 (6...Bf5 7.Nf3 e6 8.Nh4 Bg6 9.0-0 Bd6; 6...e6 7.Nf3 Bd6 8.0-0 0-0 9.d4 a6) 7.Bg3 e5 8.Nc3 d4 9.Nd5 Bd6; B) 6.Nf3 e6 (6...Bg4 7.Bf6 gf6 8.h3 Bf5 9.d3 e5; 6...Bf5 7.0-0 e6 8.Nh4 Bg6 9.f4 Ne4) 7.0-0 Bd6 8.d4 c4 9.Ba3 a6.

4.e3 c5 5.Nf3 d5 6.Be2 (6.Ne5 Bf5 (6...g6 7.Be2 Bg7 8.d4 c4 9.Nc3 0-0; 6...e6 7.Be2 Bd6 8.0-0 0-0 9.f4 Nd7; 6...Qd6 7.Be2 d4 8.f4 Bf5 9.0-0 e6; 6...Qc7 7.Be2 Bf5 8.g4 Bd7 9.f4 e6) 7.g4 Bg6 8.h4 Qd6 9.d4 Rc8) 6...Bf5 (6...Bg4 7.0-0= (7.Bf6 gf6 8.h3 Bf5 9.Rg1 e5) 7...e6 8.d3 Bd6 9.h3 Bf3; 6...e6 7.0-0 Bd6 8.d4 c4 9.a4 a6) 7.0-0+= c4 (7...e6 8.Nh4 Bg6 9.f4 Ne4) 8.Nc3 e6 9.Nh4 (9.Nd4 Bg6 10.f4 Be7+=) 9...Bb4 (9...Bg6!?=) 10.Nf5+= ef5 11.a3 Bd6 12.Bf3 Qb8 (12...Be5!?+=) 13.g3 (13.Bd5?! Bh2 14.Kh1 Be5=) 13...Be5 14.d4 cd3 15.cd3 (15.Qd3?! Nc4 16.Bc1 Ne4 17.Nd5 Ba1 18.Qc4 Be5=) 15...Qd8 16.d4 (16.Bg2 Qd7+-) 16...Bb8 17.Qc2 Ne4 18.Be2 Qc7 (18...0-0 19.Rfc1+-) 19.Rfc1 Qd8 20.Qa4 b6 21.Qc2 (21.Rc2 0-0+-) 21...0-0 22.Bd3 Re8 23.Kg2 (23.Nd1 Bd6+-) 23...Qd7 24.a4 (24.Qa4 Qe6 25.Rc2 Bd6+=) 24...Qb7 (24...Rc8 25.f3 (worse 25.Be4 fe4 26.Ba3 Nc4=+) 25...Nd6 26.Kg1+=) 25.Re1 (25.Ba3 Rc8 26.Bb4 Nc4+-) 25...Nc4+= 26.Ne4 fe4 27.Bc4 dc4 28.Qc4 Rc8 29.Qb3 Bc7 (29...Bd6 30.Ba3 Ba3 31.Ra3+=) 30.Red1 Rf8 (30...Bd6 31.Ba3 Ba3 32.Ra3+=) 31.d5+- Rfe8? (better 31...Bd6+-) 32.d6+- Bd8 33.d7 Re7 34.Qc3 f5 35.Qc4 Rf7 36.Qc6 (36.Qe6 Be7+-) 36...Qc6 37.bc6 Re7 (37...Bc7 38.Rac1+-) 38.Rd5 (38.Ba3 Rf7+-) 38...Bc7 39.Rf5 Re6 (39...Rd8 40.Rc1+-) 40.Rc1 Rd8 41.Rd5 a6 42.Rd4 (42.f4 ef3 43.Kf3 Rf8 44.Ke2 Rd8+-) 42...b5 (42...Kf7 43.f3+-) 43.ab5 ab5 44.Rc5 (better 44.f4 ef3 45.Kf3 Kf7+-) 44...g6 (44...Kf7 45.Rb4 Rb8 46.f3+-) 45.Rc1 (better 45.Rdd5!? b4 46.Be5 Re5 47.Re5 Kf7 48.Re4 Rb8+-) 45...h6 46.Rc5 (better 46.Rd5 Rb8 47.f3 ef3 48.Kf3 b4+-) 46...Kh7 (46...Kf7 47.Bc3+-) 47.Ba3 (better 47.Rb4 Kg8+-) 47...Ra8 48.Rc3 Rd8 (48...Kg7 49.Rd5 Rb8 50.Bb4+-) 49.Rd1 (49.f3 Kg7+-) 49...Kg7 50.Rcc1 (50.Rd5 Rb8 51.Bb4 Kf6+-) 50...Kh7 (50...Kf7 51.Bb4+-) 51.Bb4 h5 (51...Kg8 52.Rd5 Rb8 53.Ba5 Ba5 54.c7 Bc7 55.Rc7+-) 52.Rc2 g5 (52...Ra8 53.f4+-) 53.Rd5 Rb8 54.Rg5 h4 55.gh4 Rh6 56.h5 Re6 (56...Rf6 57.Rd5+-) 57.Rd5 (57.f4 ef3 58.Kf3 Kh6+-) 57...Rg8 58.Kf1 Rb8 59.Ba5! Ba5 60.c7 Bc7 61.Rc7 Rd8 62.Rc8 Re5 63.Rd1 Rd7 64.Rd7 Kh6 65.Rh8 (65.Rd6 Kh5 66.Rh8 Kg4 67.h3 Kg5 68.h4 Kg4 69.Rg6 Kh3 70.Kg1 Rh5 71.Rh5 b4 72.Rg3) 65...Kg5 66.Rg8 Kf5 67.h6 Rc5 68.h7 Ke6 69.h8Q Rc1 70.Kg2 Kd7 71.Qf6 Kc7 72.Rg7 Kb8 73.Qd8 Rc8 74.Qb6 Ka8 75.Ra7 1–0. Bonetti,Shane – Jockel (2000), ICC, 2002.

4.e3 c5 5.Nf3 e6 A) 6.d3 d5 (6...a6 7.ba6 ba6 8.Nbd2 d5 9.Rb1 Nc6) 7.Be2 a6 8.ba6 ba6 9.Nbd2 Bd6; B) 6.Be2 d5 (6...Be7 7.0-0 0-0 8.d4 c4 9.Bc3 a6) 7.0-0 Bd6 8.d4 c4 9.Ba3 a6.

4.e3 d6 5.Bd3 e5 6.Nc3 c6 7.a4 e4 8.Ne4 Ne4 9.Be4 d5 10.Bd3 Be6 11.Nf3 f6 12.Nd4 Bd7 13.Qh5 g6 14.Bg6 hg6 15.Qh8 cb5 16.Nb5 Nc4 17.Bf6 Qc8 18.Bg7 Qc5 19.Bf8 Qf8 20.Qd4 Bc6 21.Nc7 Kd7 22.Na8 Qa8 23.Qg7 Kd6 24.Qg6 Kc5 25.d4 Kb4 26.0-0 b5 27.Rfb1 Ka5 28.ab5 Kb6 29.bc6 Kc7 30.Rb7 Qb7 31.cb7 Kb7 32.Qf7 Kb6 33.Qd5 Nd2 34.Qc5 Kb7 35.Ra7 Kb8 36.Qc7 1–0. Abdullaevich – imranovv, lichess.org, 2018.

4.e3 d6 5.Nf3 e5 6.c4 b6 7.d3 Bb7 8.Nbd2 g6 9.Be2 Bg7 10.0-0 0-0 11.Qc2 Re8 12.Nb3 Nb3 13.Qb3 e4 14.Nd4 ed3 15.Bd3 Ne4 16.Nf3?? (better is 16.Be4 Re4 17.f3=) 16…Nc5–+ (16...Nc5 17.Qc2 Bf3 18.Bg7 Qg5–+ (18...Kg7?! 19.gf3 Qf6 20.f4=+; 18...Nd3?! 19.Bh6–/+)) 0–1. Fournier,Frederic (1820) – uchenik (1860), rated blitz game (2/12), 2002.

4.e3 d6 5.Nf3 Bg4 6.Be2 c6 (6...e5 7.h3 Bf5 8.0-0+=) 7.a4 (7.Nc3+=) 7...Ne4 (7...d5!?+=) 8.d3 (8.Nc3 Nf6+-) 8...Nc5 (8...Nf6 9.0-0+-) 9.0-0 e5 (9...d5 10.Qd2 Rc8 11.Bc3+-) 10.d4 ed4 11.ed4 Ne4 12.Nbd2 d5 13.Ne4 de4 14.Ne5 Be2 (14...Be6!? 15.Bg4 f5+-) 15.Qe2+- Qd5? (better 15...Bd6+-) 16.f3 f6 (16...e3 17.Qe3 Be7+-) 17.fe4 Qe6 (17...Qg8 18.bc6 bc6 19.Bc3+-) 18.Qh5 Ke7 (18...g6 19.Ng6! Qf7 20.Rf6 Qf6 21.Nh8 Kd7 22.Nf7+-) 19.Ba3 (19.bc6 fe5 20.Ba3 Kd8 21.Bf8 Nc6+-) 19...Kd8 20.Nf7 Kc7 21.Nh8 (better 21.bc6 Nc6 22.Nh8 Ba3 23.Ra3 Rh8 24.d5+-) 21...cb5 (21...Ba3 22.Ra3 Rh8 23.bc6 Nc6+-) 22.Bf8 Rf8 23.Qc5 Kd7 24.Qf8 Qe4 25.Qg7 Kc6 26.Rf6 Kd5 27.Qd7 Kc4 28.Qb5 Kd4 (28...Kc3 29.Ra3 Nb3 30.Rb3 Kc2 31.Rf2 Qe2 32.Re2 Kc1 33.Rb1) 29.Qb4 Nc4 30.Rd1 Ke5 (30...Qd3 31.Rd3 Ke4 32.Qc4 Ke5 33.Qd4) 31.Qe7 1–0. DEFFM – GuestDBPR, freechess.org, 2019.

4.e3 e5 5.Be5 Bb4 6.Qf3 0-0 (better is 6...Be7!?+/–) 7.Bf6+- Qf6 8.Qf6 gf6 9.Nf3 (9.a3 Be7+-) 9...d5 10.a3 Bd6 11.Nc3 Bd7? (better is 11...Be6!?+-) 12.Nd5 Be5 (12...Kg7 13.d4+-) 13.d4 (13.Ne5 fe5 14.Nf6 Kg7 15.Nd7 Rfe8+-) 13...c6 (13...Be6 14.Ne5 fe5 15.Nf6 Kg7 16.de5 Rfd8+-) 14.Ne5 fe5 15.Nf6 Kg7 16.Nd7 Rfe8 (16...Rfc8 17.Ne5 cb5 18.Kd2+-) 17.Ne5 f6 18.Nc4 (18.Nc4 Nc4 19.Bc4 cb5 20.Bb5+-) 1–0. DEFFM – GuestYKPJ, freechess.org, 2018.

4.e3 e5 5.Be5 d5 6.Nc3+/–.

4.e3 e5 5.Be5 d6!? 6.Bf6 Qf6+-.

4.e3 e5 5.Be5 Qe7 6.Bc7+- b6 7.Bg3 (7.Bf4 Bb7+-) 7...g6 8.Nc3 Bg7 9.Nf3 Ne4? (better 9...Bb7+-) 10.Nd5+- Qc5 11.Nc7 Kf8 12.Na8 Ba1 (12...Bb7+-) 13.Qa1 Bb7 (13...Kg8 14.Be5 f6 15.Bf6 Nf6 16.Qf6 Bb7 17.Qd8 Qf8 18.Qf8 Kf8+-) 14.Qh8 Ke7 15.Bc7 Ba8 16.Bd8 Ke6 (16...Kd6 17.Qf8 Ke6 18.Qe8 Kd6 19.Qe7 Kd5 20.Qe5) 17.Qe8 Kd5 (17...Kd6 18.Qe7 Kd5 19.Qe5) 18.Qe5 1–0. DEFFM – GuestPRDT, freechess.org, 2019.

4.e3 Nf6 5.Nf3 Nc4 6.Bc4 dc4 7.Qe2 Be6 (7...Qd5 8.Nc3 Qc5 9.0-0=) 8.Ng5 Bd5 (8...Qd5!? 9.Ne6 fe6+=) 9.e4+/– Ne4? (9...h6 10.ed5 hg5 11.Bf6 gf6+=) 10.Ne4+- Qd7 (10...a6 11.ba6 Ra6 12.Nbc3+-) 11.Nbc3 Be6? (11...e6+-) 12.Nc5 Qc8 13.Ne6 fe6 (13...Qe6 14.Qe6 fe6 15.d3+-) 14.Qe4 (14...a6 15.Qc4+-; 14.0-0 e5+-) 1–0. Waibel,Ulrich – Wakefield,Danny, compuserve, 1995.

4.e3 g6 5.c4 a6 6.a4 Bg7 7.Nf3 c5 8.Be2 ab5 (8...0-0 9.Nc3=) 9.ab5+= 0-0 10.0-0 d5 11.cd5 Nd5 (11...Qd5!? 12.Nc3 Qf5+=) 12.Bg7+/– Kg7 13.d4 cd4 14.Qd4 f6 15.Qb2 Qb6 16.Nbd2 Bd7 17.Ra4 Rfc8 18.Ne4 Bf5 19.Nfd2 Qc7 20.Rfa1 b6 21.Rd4 Be6 22.Bd3 (22.Bf3 Qe5+=) 22...Bf7 23.h3 (23.Rda4!?+=) 23...e5= 24.Rda4 f5 25.Ng5 Qc3 26.Qc3 Nc3 27.R4a3 Bg8 (27...e4 28.Nf7 Kf7 29.Bf1=+) 28.e4= h6 ½–½. Kural,A. Serhat (2000) – Baciak,Miloslav (1960), Champions League, 2007.

4.Nf3 Nc4 5.Qc1 Nb2 6.Qb2 g6 7.e3 Bg7 8.c3 0-0 9.Be2 Ne4 10.0-0 b6 11.Qb4 Bb7 12.d3 Nd6 13.Nbd2 e6 14.Rac1 Re8 15.a4 c5 16.bc6 a5 17.Qd6 Bc6 18.Ne5 Qg5 19.Nef3 Bf3 20.Nf3 Qf6 21.Qd7 Red8 22.Qb5 Rab8 23.Nd4 Rd5 24.Bf3 Rb5 25.Nb5 h5 26.Nd4 g5 27.Bh5 Qh6 28.g4 f5 29.h3 fg4 30.hg4 Rc8 31.c4 e5 32.Nb5 Rc7 33.Kg2 Qh7 34.Rcd1 Bf6 35.Nc7 Qc7 36.Rh1 Qc6 37.Kg3 e4 38.Bg6 Be5 39.Kg2 Qg6 0–1. Phomopsis (1675) – edupan (1690), lichess.org, 2020.

4.Nf3 Nc4 5.Bd4 b6 (better 5...a6!? 6.ba6 b6=) 6.e4+= d5 7.e5 Ne4?? (better 7...Ng4+=) 8.d3+- c5 9.bc6 (9.de4?! cd4 10.Qd4 e6 11.ed5 ed5 12.Bc4 dc4 13.Qc4 Be6+/-) 9...Nb2 (9...Nf2 10.Kf2 Na5+-) 10.Bb2 Nc5 11.Nc3 Bg4 (11...a6 12.Qe2+-) 12.d4 (12.Be2 Ne6+-) 12...Ne6 13.Be2 (13.Bb5 Nc7 14.a4 e6+-) 13...Qc7 (13...Nf4 14.Bb5 Qc8 15.h3+-) 14.0-0 (14.Nd5 Qc6 15.Ne3 Qa4+-) 14...Qc6 (14...Rd8+-) 15.Bb5 (15.Bb5 Qb5 16.Nb5+-) 1-0. DEFFM – GuestLZMV, freechess.org, 2021.

4.Nf3 d5 5.e3 (--> 4.e3 d5 5.Nf3).

4.Nf3 Nf6 5.e3 e6 6.Be2 Bd6 7.a4 0-0 8.Na3 Re8 9.c4 e5 10.cd5 Nd5 11.Nc4 Nc4 12.Bc4 Nb6 13.Be2 e4 14.Nd4 Be5 15.Qc2 Bd6 16.0-0 Qg5 17.f4 ef3 18.Rf3 Bg4 19.Rf2 Be2 20.Ne2 a6 21.Nd4 Qh5 22.g3 Qd5 23.Raf1 f6 24.Nf5 ab5 25.Ng7 Kg7 26.Rf6 Re5 27.Be5 Be5 28.R6f5 Qc4 29.Qd1 Bb2 30.Qh5 Kh8 31.ab5 Bg7 32.Rf7 Qd5 33.Qd5 Nd5 34.R1f5 Rd8 35.e4 Nf6 36.e5 Ne8 37.Re7 Kg8 38.g4 Bf8 39.Ref7 Bc5 40.Kf1 Ng7 41.Rf3 Ne6 42.R7f6 Nd4 43.Rc3 b6 44.Rd3 Re8 45.Rf4 Nb5 46.Rf5 Nd4 47.Rf4 ½–½. purplegadge (1775) – af120 (1815), gameknot.com, 2014.

4.Bf6 gf6 5.e4 e5 6.Nc3 Bb4 (6...d6 7.d4=) 7.Nd5+= Bc5 (7...Bf8 8.Nf3+=) 8.Qf3+/– c6 (8...d6 9.Nf6 Kf8 10.Ne2+/–) 9.Nf6 (9.Qf6?! Qf6 10.Nf6 Ke7=) 9...Kf8 10.Ng4 (10.Rb1 Ke7+/–) 10...d6 11.bc6 Nc6 (11...bc6 12.Nh6 Be6 13.Nf5+=) 12.Nh6 (12.Bc4 Qc7 13.Nh6 Nd4+/–) 12...Qe7 (12...Be6 13.Rb1 Nd4 14.Qd3=) 13.Bc4 Be6 (13...Nd4 14.Qd3 Be6+/–) 14.Be6+/– Qe6 15.Ng4 (15.Nf5!?+/–) 15...Nd4= 16.Qf6?? (better is 16.Qd1 Qg6 17.f3+=) 16...Nc2 17.Kd1 Qf6 (17...Qg4?! 18.f3 Qg7 19.Qg7 Kg7 20.Kc2=+) 18.Nf6 Na1 19.Nd7 Kg7 20.Nc5 dc5 21.Kc1 Rhg8 22.Kb2 Kf6 23.Ka1 (23.g3 Rad8–+) 23...Rg2 24.Nh3 (24.f4 ef4 (< 24...Rd2 25.fe5 Ke6 26.Kb1–+) 25.Nf3 Rf2 26.e5 Kf5–+) 24…Rd8 (25.Kb2 Rd2 26.Kc3 Ra2–+) 0–1. fordey – color1972, ChessWorld.net, 2005.

5.c4 a6 6.Nc3 (6.Nf3 e6=) 6...e6 (6...e5 7.d4 e4 8.Qc2=) 7.a3 (7.Nf3 d5 8.cd5 ed5 9.ba6 Be7=) 7...Bb7 (7...d5 8.cd5 ed5 9.Nf3+=) 8.Nf3 Be7 9.d3 0-0 10.Be2 d5 (10...ab5 11.cb5 c5 12.0-0=) 11.0-0 Qd7 (11...dc4 12.dc4 Bf3 13.Bf3 Qd1 14.Nd1= (worse is 14.Bd1 Nc4 15.Bc1 ab5–+; 14.Rfd1?! Nc4 15.Ba8 Ra8=)) 12.a4 (12.Qc2 ab5 13.Ne5 Qd8 14.cb5 Bd6=) 12...Rfd8 (12...dc4 13.dc4 Rad8 14.Qd7 Nd7 15.Rfd1=) 13.Ne5 (13.cd5 Nd5 14.Ne5 Qe8=) 13...Qd6 (13...Qe8 14.cd5 Nd5 15.Bh5=) 14.f4 (better is 14.ba6 Ba6 15.Nb5 Bb5 16.ab5+=) 14...Nd7?? (better is 14...Qc5 15.d4 Qb4=) 15.Ba3+- Nc5 (15...Qa3 16.Ra3 Ba3 17.cd5 ed5+-) 16.d4 Nab3 (16...Nc4 17.Bc4 dc4 18.Nc4+-) 17.dc5 Nc5 18.Bc5 (better is 18.cd5 ed5 19.ba6 Ba6 20.Ba6 Ra6 21.Nb5+-) 18...Qc5+/– 19.Qd4 dc4 (19...Qd4 20.ed4 dc4 21.ba6 Ra6 22.Bc4+-) 20.Qc5+- Bc5 21.Nc4 c6 (21...ab5 22.ab5 c6 23.Ra8 Ba8 24.bc6 Bc6 25.Kf2+-) 22.Bf3 (better is 22.bc6 Bc6 23.Kf2+-) 22...Rab8? (better is 22...cb5 23.ab5 Bd5 24.Nd5 ed5+-) 23.bc6 Ba8 (23...Bc6 24.Bc6 Rdc8+-) 24.c7 Bf3 25.cd8Q (25.Rf3 f5+-) 25...Rd8 26.Rf3 f5 (26...h6 27.Rb1+-) 27.Rd1 (27.Rb1 Rc8 28.Ne2 Rc6+-) 27...Rc8 (27...Rd1 28.Nd1 b5 29.ab5 ab5 30.Ne5+-) 28.Nd2 (28.Ne5!? g6+-) 28...Bb4 29.Ncb1 (29.Na2 Be7+-) 29...b5 (29...Rc2 30.Rh3+-) 30.ab5 ab5 31.Rff1 (31.e4 Rc2+-) 31...Bc5 (31...Kf7 32.Nf3+-) 32.Kf2 b4 (32...Kf7 33.Rc1 Rc7 34.Rfd1+-) 33.Nb3 (better is 33.Rc1 Rc7+-) 33...Be7 34.Rc1 Ra8 35.Rc2 (35.Rc7 Kf7+-) 35...Bf6 (35...Kf7 36.N1d2+-) 36.Re1 (36.Rfc1 e5+-) 36...e5 (36...Kf7 37.Rc7 Ke8 38.Nc5 Ra2 39.Kf3+-) 37.Ree2 (37.e4 fe4 38.Re4 ef4 39.Rb4 g5+-) 37...e4 (37...ef4 38.ef4 Kf7 39.Rc5+-) 38.Ra2 (38.Rc7 Rb8+-) 38...Rb8 39.Rec2 (39.g4 fg4 40.N1d2 Re8+-) 39...h5 (39...Rb5 40.Ra7 h5 41.Nd4+-) 40.Rc4 (40.Rc5 g6+-) 40...g5 (40...Kh7 41.Ra4+-) 41.Rac2 (41.fg5!? Bg5 42.Ra5 Rf8+-) 41...Kg7 (41...gf4 42.Rc5 fe3 43.Ke2+-) 42.Rc8 (42.fg5 Bg5 43.Rc7 Kg8+-) 42...Rb6 (42...Rc8 43.Rc8 gf4 44.ef4+-) 43.fg5 Bg5 44.R2c7 Kg6 (44...Kh6 45.Rh8 Kg6 46.Rg8 Kh6 47.Nd4+-) 45.Rc6 (better is 45.Rg8!? Kf6 46.Rcg7 Bh4 47.g3 Bg3 48.Kg3 Ke5+-) 45...Rc6 46.Rc6 Bf6 47.Rb6 Kf7 (47...Kg5 48.Rb4 Kg6 49.Nd4+-) 48.Rb4 Bh4 (48...Kg6 49.Nd4+-) 49.g3 Be7 (49...Bf6 50.Nd4 Bd4 51.ed4+-) 50.Rb5 Kg6 51.Nd4 Bf6 52.Rb6 (better is 52.Nf5!? Kf7+-) 52...Kg5 53.Rf6! Kf6 54.Nc3 Ke5 55.Nce2 Kf6 56.Nf4 Kg5 (56...h4 57.gh4 Kg7 58.Nf5 Kf6 59.Ng3+-) 57.Nde6 Kh6 58.h4 Kh7 59.Nh5 Kg6 60.Nhf4 Kh6 (60...Kf7 61.Nd4 Kf6 62.Nd5 Kg6 63.Ne7 Kf6 64.Ndf5 Kf7 65.h5 Kf8 66.h6 Ke8 67.h7 Kd7 68.h8Q Kc7 69.Qc8 Kb6 70.Nd5 Ka5 71.Qc5 Ka4 72.Qb4) 61.Nd4 Kh7 62.Nf5 Kh8 63.Nd6 (63.Ng6 Kg8 64.Nge7 Kf7 65.h5 Ke8 66.h6 Kd7 67.h7 Kd8 68.h8Q Kc7 69.Qc8 Kb6 70.Nd5 Ka5 71.Qc5 Ka4 72.Qb4) 63...Kh7 64.Ne4 Kh6 65.g4 Kh7 66.g5 Kh8 67.Ng3 (67.Ne6 Kh7 68.h5 Kh8 69.g6 Kg8 70.Nf6 Kh8 71.g7) 67...Kh7 68.e4 Kh8 69.e5 Kg7 70.e6 Kf8 71.g6 Kg7 (71...Ke7 72.g7 Kd6 73.g8Q Kc6 74.e7 Kc5 75.Qb3 Kd6 76.e8Q Kc5 77.Ne4 Kd4 78.Qd5) 72.e7 Kf6 73.e8Q Kg7 74.Qf7 Kh6 (74...Kh8 75.Qf8) 75.Ke1 (75.Ke1; 75.Nf5) 1–0. Garijo Perez,Hugo – Habans Aguerrea,Elena, Spanish Youth Championship U10, 2016.

5.c4 Bb7 6.d4 e6 (6...Nc4 7.Bc3–/+) 7.Nc3 (7.Nf3 a6=) 7...Ne4 (7...Nc4 8.Rb1–/+) 8.Nge2 (better is 8.Ne4!? Be4 9.Rc1=) 8...Nc4–/+ 9.Ne4 Nb2 10.Qc2 h6 (better is 10...Be4!? 11.Qb2 c5–/+) 11.N2c3 (11.Nd2 Ba3 12.Nc3 Qe7+=) 11...Ba3 (11...d5!?=) 12.Qb3 Be4 (better is 12...Qe7!? 13.Nd2 Qb4+/–) 13.Ne4+/– Qe7 14.Be2?? (14.Nc5 bc5 15.Qa3 cd4 16.Qb2 de3 17.fe3 (17.Qg7 Qb4 18.Ke2 Qd2 19.Kf3 Qf2 20.Kg4 Ke7–+) 17...Qh4 18.g3+/–) 14...Qb4=+ 15.Nc3 Qb3 16.ab3+/– Bb4 17.Rc1?? Ba3?? 18.Rc2+/– Rc8 19.0-0 c5 20.d5 e5? 21.Ra1+- Bb4 22.Ne4 Ra8 23.Rb2 f5 24.Nd6 Ke7 25.Nf5 Kf6 26.e4 Bc3 27.Rba2 Ba1 28.Ra1 g6 29.Nd6 h5 30.Rc1 Ke7 31.Nc4 d6 32.g3 Rab8 33.f4 ef4 34.gf4 Rhf8 35.Rf1 Kd7 36.f5 gf5 37.ef5 h4 38.Bg4 Rg8 39.h3 Rbe8?? 40.f6 (40.f6 Rg4 41.hg4+-) 1–0. gtate (1955) – rdarmi (1810), net–chess.com, 2004.

5.c4 Bb7 6.Nf3 a6=.

5.c4 Bb7 6.Nf3 c5 7.a4 e6 8.Be2 Be7 9.0-0 0-0 10.d4 (10.Bc3 d5=) 10...d5 (10...Bf3 11.Bf3 Rc8 12.Nd2 cd4 13.Bd4=) 11.Nbd2 Rc8 12.cd5 ed5 (12...c4 13.d6 Bd6 14.Rc1=) 13.Rc1 (13.dc5 bc5 14.Qc2 Qb6+=) 13...c4= 14.Nb1 (14.Bc3 a6=) 14...Bb4 (14...Nb3 15.Rc2=+) 15.Nc3 Qd6 16.Ne5 Rfe8 17.f4 (17.Rc2!?=) 17...Bc3–/+ 18.Bc3 Ne4 (18...Nb3 19.Rc2–/+) 19.Bf3 (19.Ba5 ba5 20.Bg4 Rc7=) 19...Nb3 (19...Nc3 20.Rc3 f6=+) 20.Rc2 (better 20.Be4!? Nc1 21.Bh7 Kh7 22.Qh5 Qh6 23.Qf5 g6 24.Qf7 Qg7 25.Qg7 Kg7 26.Rc1+=) 20...f6–/+ (worse 20...Nc3 21.Rc3 Rc7 22.Qc2=) 21.Be4 de4 22.Ng4 h5 (better 22...Qa3!? 23.d5 A) 23...Qa4 24.Nf6 gf6 25.Qg4 (25.Bf6 Kf8 26.d6 Qb5+-) 25...Kf8 26.Bf6+-; B) 23...Qd6–/+) 23.Nf2= g6 (better 23...Qd5!?=) 24.f5+- Kf7 (better 24...Qf8!?+-) 25.fg6+- Kg6 26.Nh3 f5?! (26...Rh8 27.d5! Rcf8+-) 27.Nf4 Kf7 28.Qh5 Ke7 29.Qf5 (better 29.Qh7 Kd8 30.Qb7+-) 29...Rf8 (29...Kd8 30.d5 Kc7 31.Ne6 Qe6 32.de6 Kb8+-) 30.Ng6 Kd8 31.Qf8 Qf8 32.Rf8 Kc7 33.Rc8 (33.Rf7 Kb8 34.Ne7 Re8+-) 33...Bc8 34.Nf4 Bf5 (34...Kd7 35.h4+-) 35.h3 (35.Bb4 Bg4+-) 35...Kd6 (35...Kb7 36.Bb4 a6 37.Rc4 ab5 38.ab5+-) 36.g4 Bh7 37.Bb4 Kd7 38.Rc4 Na5 39.Ba5 ba5 40.Nd5 Kd6 41.Rc7 (better 41.Nf6 Bg6 42.g5 Bf5+-) 41...Bg6 42.Rc6 Kd5 43.Rg6 Kc4 44.Ra6 Kd3 45.Ra7 (45.Kf2 Kc4 46.Ra7 Kd5+-) 45...Ke3 46.Ra5 Kd4 47.Ra6 e3 48.Re6 e2 49.Re2 Kc4 50.Rf2 Kb4 51.g5 (51.b6 Ka4 52.b7 Kb4 53.b8Q Kc5 54.Qe5 Kc4 55.Rc2 Kd3 56.Rc3 Kd2 57.Qe3 Kd1 58.Rc1) 51...Ka4 52.g6 Kb5 (52...Kb3 53.g7 Kc3 54.b6 Kb3 55.g8Q Ka3 56.b7 Kb4 57.b8Q Kc5 58.Qgd8 Kc4 59.Rc2) 53.g7 Kc5 (53...Kc4 54.g8Q Kc5 55.Rf5 Kb4 56.Qg4 Kc3 57.Rf3 Kd2 58.Qg2 Ke1 59.Rf1) 54.g8Q Kd4 (54...Kd6 55.Qd8 Ke5 56.Re2 Kf5 57.Qf8 Kg5 58.Rg2 Kh5 59.Qh8) 55.Qd8 (55.Qg4 Ke5 56.Rf5 Kd6 57.Qg6 Ke7 58.Rf7 Kd8 59.Qg8) 55...Ke3 (55...Kc4 56.Rf4 Kc5 57.Qg5 Kd6 58.Rf6 Kd7 59.Qg7 Ke8 60.Rf8) 56.Qe8 (56.Qd7 Ke4 57.Re2 Kf4 58.Qg4) 56...Kd4 57.Rf7 (57.Qb5 Ke3 58.Qe5 Kd3 59.Rf3 Kc4 60.Rc3 Kb4 61.Qc5 Ka4 62.Ra3) 57...Kd5 58.Rd7 Kc6 (58...Kc5 59.Qc8 Kb4 60.Rb7 Ka4 61.Qa8) 59.Qc8 Kb6 (59...Kb5 60.Rb7 Ka4 61.Qa8) 60.Rb7 Ka6 (60...Ka5 61.Qa8) 61.Qa8 1–0. BeepBeepImAJeep (2610) – BB09 (2125), lichess.org, 2019.

5.c4 Bb7 6.Nf3 c5 7.Be2 a6+=.

5.c4 Bb7 6.Nf3 d6 7.Be2+= e5 8.0-0 Be7 9.d4 ed4 10.Nd4 0-0 11.Nd2 c5 (11...a6 12.Bf3+=) 12.bc6 (12.Nf5 d5+=) 12...Nc6+= 13.a4 (13.Nf5 Re8+=) 13...Ne5 14.N2f3 Rc8 15.Ne5 de5 16.Nb5 (16.Nf5 Nd7 17.Bg4=) 16...Qd1 (better 16...a6 17.Nc3 Bc5=+) 17.Rfd1+- a6 18.Nc3 (better 18.Nd6!? Bd6 19.Rd6+-) 18...e4 (better 18...Rfd8=) 19.Nd5?? (better 19.Ba3!? Ba3 20.Ra3+=) 19...Bd5 (better 19...Nd5!? 20.cd5 Rc2–+) 20.cd5–/+ Rfd8?? (better 20...Rc2!? 21.Bf6 Bf6 22.Ba6 Ba1 23.Ra1 Rd8=+) 21.Bd4 (21.Ba6 Rc2 22.Bf6 Bf6+-) 21...Bc5? (better 21...Nd5 22.Ba6 Rc2+=) 22.Ba6 Ra8 (22...Bd4 23.Rd4 (23.ed4?! Ra8 24.Bb7 Ra7=) 23...Rc2 24.d6+-) 23.Bb7 Ra7 24.Bf6 gf6 25.Bc6 f5 26.Rab1 Rd6 27.Rb5 (27.Rdc1 Ra5+-) 27...Kg7 (27...Ra5 28.Rb3+-) 28.Ra1 (28.Rc1!? Kf6+-) 28...Ra5+- 29.g3 (29.Rab1 Kf6+-) 29...Kf6 (29...Rb5 30.ab5 (30.Bb5?! Rd5 31.Bc4 Rd7=) 30...Kf6 31.Ra8+-) 30.Rab1 Ra4? (better 30...Ke5+-) 31.Rc5!+- bc5 32.Ba4 Rd5 33.Bb3 (33.Rb5!? Re5+-) 33...Rd3 34.Bc4 Rc3 35.Rb6 Ke5? (35...Kg7 36.Ba6 f6+-) 36.Bf7 c4 37.Rc6 Rc1 38.Kg2 c3 (38...Rd1 39.Re6 Kd5 40.Re8 Kc5 41.Rc8 Kd6 42.Rd8 Ke7 43.Rd1 Kf7 44.Rd4+-) 39.h3 (39.Bc4 f4 40.g4 fe3 41.fe3 Rc2 42.Kg3 Rg2 43.Kg2 c2 44.Re6) 39...h5 (39...Rd1 40.Rc3 Kf6 41.Bg8+-) 40.Bh5 (40.Bb3 f4 41.gf4 Kf5 42.Bf7 Rg1 43.Kg1 c2 44.Bg6) 40...Kd5+- 41.Rc8 c2 (41...Ke5 42.g4 fg4 43.hg4+-) 42.Bf7 Kd6 43.Bb3 Kd7 (43...Rb1 44.Bc2 Rb4 45.Rd8 Kc7 46.Rd4+-) 44.Rc2 Rc2 (44...Rb1 45.Rd2 Ke7+-) 45.Bc2 Ke6 46.g4 (46.Be4 f4+-) 46...Ke5 (46...Kf6 47.Be4 fg4 48.hg4+-) 47.gf5 (better 47.g5!? Ke6 48.h4 Kf7+-) 47...Kf5 48.f3 Ke5 49.Be4 Ke6 50.Kg3 Kf6 (50...Ke7 51.f4 Kd6 52.h4+-) 51.Kg4 Kg7 52.h4 Kf6 53.h5 Kg7 54.Kg5 Kh8 (54...Kf7 55.h6 Ke7 56.h7 Ke8 57.h8Q Kd7 58.Qd4 Kc8 59.Qc5 Kd8 60.Bf5 Ke8 61.Kf6 Kd8 62.Qe7) 55.Kg6 (55.h6 Kg8 56.Bd5 Kf8 57.Kf6 Ke8 58.Ke6 Kd8 59.Kd6 Kc8 60.h7 Kb8 61.h8Q Ka7 62.Kc5 Ka6 63.Qa1) 55...Kg8+- 56.Bf5 (56.h6 Kf8 57.h7 Ke8 58.h8Q Kd7 59.Qd4 Kc7 60.Qa7 Kd8 61.f4 Ke8 62.Bc6 Kf8 63.Qf7) 56...Kh8 57.Bd7 (57.h6 Kg8 58.Kf6 Kh8 59.e4 Kg8 60.e5 Kh8 61.e6 Kg8 62.e7 Kh8 63.e8Q) 57...Kg8 58.f4 (58.e4 Kf8 59.Kf6 Kg8 60.e5 Kh8 61.e6 Kg8 62.e7 Kh7 63.Bf5 Kh6 64.e8R Kh5 65.Rh8) 58...Kh8 59.f5 Kg8 60.f6 Kh8 61.e4 Kg8 62.e5 Kf8 63.e6 Kg8 64.e7 Kh8 65.e8Q 1–0. BeepBeepImAJeep (2655) – Addis (2080), lichess.org, 2016.

5.c4 c6 6.Nf3 c5 7.Be2 Bb7 8.0-0 e6 9.d4 (9.d3 Be7+=) 9...Bf3 (9...Rc8 10.Nbd2+=) 10.Bf3 d5 (10...Rc8 11.Be2+=) 11.cd5+/– Nd5 12.dc5 Bc5 (12...Nc4 13.cb6 Nb2 14.Qc2+/–) 13.Bg7 Rg8 14.Bd5 (14.Bc3 Rc8+-) 14...ed5 (14...Qd5 15.Qd5 ed5 16.Bc3+/–) 15.Be5 Qg5 (15...Nc4!? 16.Bf4 Qd7+/–) 16.Qd5+- Qg2?? (better is 16...Rd8 17.Qe4 f5+-) 17.Qg2 Rg2 18.Kg2 Nc4 (18...a6 19.Nc3+-) 19.Bf6 (19.Bd4 Rc8+-) 19...Nd6 (19...Rc8 20.Rd1+-) 20.Nc3 Nf5 (20...Kd7 21.Rfd1+-) 21.Rfd1 a6 (21...Ne7 22.Nd5 Kf8 23.Nc7+-) 22.Nd5 ab5 (22...Kf8 23.ba6 Ra7 24.Rab1 Ra6 25.Nc7 Ne3 26.fe3 Ra2 27.Kh3+-) 23.Nc7 Kf8 24.Na8 Be3 25.Rd8 1–0. DEFFM – tahyist, freechess.org, 2018.

5.Nf3 Bb7 6.d3 e6 7.Nbd2 Bb4 8.Be2 0-0 9.0-0 a6 10.a3 Bc5 11.c4 ab5 12.cb5 Rb8 13.a4 c6 14.bc6 Bc6 15.Qc2 Nd5 16.Ba3 Ba3 17.Ra3 Nb4 18.Qc3 Qe7 19.Rb1 Nd5 20.Qa1 Rfc8 21.Nd4 Ba8 22.Nb5 Bc6 23.Bf3 Bb5 24.Rb5 Nc6 25.Bd5 ed5 26.d4 Rc7 27.Rab3 Rcb7 28.Nb1 Qf6 29.Nc3 Na5 30.R3b4 Nc4 31.Nd5 Qe6 32.Rc4 1–0. Phomopsis – kathu, lichess.org, 2019.

5.Nf3 Bb7 6.Be2 d5 7.a4 Nc4 (7...e6 8.0-0=) 8.Bf6 (8.Bc4 dc4 9.Na3 Qd5+/–) 8...ef6 (8...gf6 9.Nc3=) 9.d3 (9.0-0 a6 10.Nc3 ab5 11.ab5 Bb4=) 9...Ne5 (better is 9...Na5+=) 10.c4? (better is 10.0-0=) 10...dc4 11.dc4 (11.d4 Bb4 12.Kf1 Nf3 13.Bf3–/+) 11...Qd1 (11...Bb4 12.Nfd2 Bg2 13.Rg1–+) 12.Bd1 (12.Kd1 Be4+=) 12...Nc4 (12...Bb4 13.Ke2–+) 13.0-0–/+ Bd6 (13...Bb4 14.Be2 Na5 15.Na3–/+) 14.Bb3 (14.Be2 Na5–/+) 14...Ne5 (14...Na5 15.Bc2–/+) 15.Ne5 (15.Nbd2 0-0-0–/+) 15...fe5 (15...Be5 16.Ra2–/+) 16.Nc3 0-0 (16...0-0-0 17.Bf7 Bb4 18.Rfc1–/+) 17.Bd5 (17.Rfd1 Rfd8–/+) 17...Bd5 18.Nd5 Rad8 (18...Rfd8 19.Rfc1+=) 19.e4 (19.Rfd1 f5+=) 19...f5–/+ 20.f3 (20.ef5 Rf5 21.Rad1 Rdf8–/+) 20...fe4 21.fe4 Rf1 (21...Bc5 22.Kh1–/+) 22.Rf1 (22.Kf1 Bc5 23.Ke2 Rf8–/+) 22...Rf8 23.Rf8 (23.Rf5 Ra8–/+) 23...Kf8 24.Kf2 (24.Kf1–/+) 24...Kf7 (24...Ke8 25.Ke2–/+) 25.g3 (25.Kf3 Kg6–/+) 25...g5 (25...Ke6!?–/+) 26.Ke3+= Ke6 (26...g4 27.Kd3+=) 27.Kd3 (27.Kf3 h5+=) 27...h5 (27...g4 28.Kc4+=) 28.Kc4 (28.h3 Kf7+=) 28...g4+= 29.Nb4?? (better is 29.Kc3+=) 29...Bb4–+ 30.Kb4 Kd6 (better is 30...Kd7 31.Kc4 c6 32.Kb3–+) 31.Kc4 c5 (better is 31...c6–+) 32.bc6?? (better is 32.Kd3–+) 32...Kc6 33.Kb4 a6 34.Kc4 b5 35.ab5 ab5 36.Kb4 Kb6 37.Kb3 Kc5 38.Kc3 b4 39.Kb3 Kb5 40.Kc2 Kc4 41.Kb2 b3 42.Kb1 Kd4 (42...Kc3 43.h3 gh3 44.Kc1 b2 45.Kd1 Kd3 46.Ke1 Ke3 47.Kd1 b1Q) 43.Kb2–+ Ke4 44.Kb3 Kd3 45.Kb2 e4 46.Kc1 Ke3 (46...e3 47.Kb1 e2 48.Kb2 e1Q 49.h4 Qb4 50.Ka2 Kc3 51.Ka1 Qb2) 47.Kd1 Kf2 (47...Kf3!? 48.Kc1–+) 48.Kd2 e3 49.Kd1 e2 (49...e2 50.Kc2 e1Q 51.Kb3 Qa5 52.Kb2 Ke2 53.Kb3 Kd3 54.Kb2 Qb6 55.Ka2 Kc2 56.h3 Qa5) 0–1. sharpyn – ksiazew, PlayOK, 2018.

5.Nf3 d5 6.Be2 e6 7.0-0 Bd6 8.a4 0-0 9.d4 Ne4 10.Nbd2 f5 11.Ne5 Ng5 12.f4 Ne4 13.Ne4 fe4 14.Bc3 Nb7 15.Bd2 Be5 16.fe5 Qh4 (16...Rf1 17.Qf1 Bd7 18.Qf4+/–) 17.Rf8 Kf8 18.c4 Nd8 (18...Bd7 19.Qc2 Rc8 20.Rf1 Kg8 21.Bb4+/–) 19.Rc1 Nf7 20.cd5 Qd8 (better is 20...ed5 21.Rc7 Be6+-) 21.de6 Be6 22.Qc2 Rc8 23.Bb4 Kg8 24.Qe4 Bd5 25.Qg4 Nh6 26.Qf4 Be6 27.Bf3 Nf5 (27...Bb3+-) 28.d5! Bd5 29.Qf5 Bf3 30.gf3 g6 (30...Qe8 31.Rc6 g6 32.Qg4+-) 31.Qe6 Kg7 32.Be7 Qe8 33.Rd1 (33.Rd1 Ra8 34.Rd7 Qc8 35.Bf6 Kh6 36.Qh3) 1–0. Kortis – Belle, internet, 2016.

5.Nf3 d6 6.Be2 e5 7.0-0 Bb7 8.Bc3 Be7 9.Ba5 ba5 10.c4 0-0 11.Qa4 a6 12.Qa5 ab5 13.Qb5 Ba6 14.Qc6 Qc8 15.a4?? (15.d4 Bb7 16.Qb5 c6+=) 15...Bb7?? (better is 15...Rb8 16.Ng5 Bb7–+) 16.Qb5+= h6 17.a5 e4 18.Nd4 Ba6 19.Nc6 Qd7 20.Qa4 Bb7 21.Ne7 Qe7 22.Nc3 Rfd8 23.Rfb1 Ba6 24.Qc6 Rdc8 25.Bd1 Rcb8?? (better is 25...Qe6 26.Nb5 Qe5+-) 26.Rb8 Rb8 27.Qa6 (27...Kh7 28.Qc6+-) 1–0. Bonetti,Shane – Desperado, ICC, 2002.

5.a4 a6 6.Nf3 ab5 7.ab5 b6 (7...g6 8.Nc3+=) 8.Nc3 (better is 8.bc6 dc6 9.Nc3+/–) 8...Nd5? (better is 8...Bb7+=) 9.Ne5+- Nc3?? (9...Nf6 10.bc6 dc6 11.Nc6 Qc7+-) 10.Qf3 (10.dc3?! Qc7 11.c4 e6+/–) 10...f6 (10...Qc7 11.Qf7 Kd8 12.Bc3 Bb7+-) 11.Qh5 g6 12.Ng6 Kf7 13.Nh8 Kg7 14.Bd3 f5 15.Qg5 Kh8 16.Bc3 e5 17.Be5 Bg7 (17...Qf6 18.Bf6 Bg7 19.Qg7) 18.Qd8 1–0. Adlai – Giotto, corr, 2018.

5.a4 cb5 6.ab5 b6 7.Nf3 Bb7 8.Be2 d6 9.c4 (9.Bf6 gf6 10.0-0 Rg8+/–) 9...e5 10.Qc2 (10.0-0 Qc7+=) 10...Be7 (10...e4 11.Nd4+=) 11.Nc3 (11.0-0 e4 12.Nd4 d5 13.cd5 Qd5+=) 11...0-0 12.d3 a6 13.0-0 ab5 14.Nb5 Nc6 (14...Qd7 15.Rfb1+=) 15.Ra8 Ba8 16.Qb3 Na5 17.Qc2 d5 (better is 17...Nc6=) 18.Ne5+/– dc4 19.Nc4?? (better is 19.dc4 Be4 20.Qc3+-) 19...Qd5–/+ 20.e4 Qb5 21.Ne5 (21.Ne3 Qd7–/+) 21...Qb3 22.Qd2 (22.Rc1 Qe6–+) 22...Bd6 23.Bd1 (23.Nf3 Bf4! 24.Qc3 Qe6–+) 23...Qb4 (23...Qe6 24.Nf3 Rd8 25.Qg5–+) 24.Bc3 Qb5 25.Ba5?? (better is 25.Nf3–+) 25...ba5 (better is 25...Qe5 26.f4 Qa5 27.Qa5 ba5–+) 26.Nc4 Bb4 27.Qa2 Qc5 28.Bb3 Qc7 29.Ne3 Bc6 (29...Rd8!? 30.Rd1–+) 30.Rc1 Qd6 (30...Rc8 31.d4 Qd7 32.e5–+) 31.Qc2? (better is 31.e5 Qe5 32.Rc6–/+) 31...Bd7–+ 32.Nc4 Qc7 33.Qb2 Ng4 (33...Rc8 34.e5 Nd5 35.Rc2–+) 34.e5 Ne5 0–1. GuestTZRR – GuestWTFF, freechess.org, 2017.

5.a4 cb5 6.ab5 Nc4. DEFFM – GuestQKYT, freechess.org, 2016.

5.a4 b6 6.Nf3 d5 (6...a6 7.Be2+=) 7.bc6 (7.Bc3 Qc7+=) 7...Nc6 8.Bb5 Bd7 9.0-0 e6 10.Bc6 (10.Ne5 Ne5 11.Be5 a6=) 10...Bc6 11.Ne5 Qc7 12.Nc6 Qc6 13.Bf6 gf6 14.Nc3 Bg7 15.Nb5 a6 16.Nd4 Qc5 (16...Qd6 17.a5=) 17.Qh5 (17.c3 f5=) 17...0-0 (17...Qd6 18.Rfb1=) 18.f4 f5 19.Rf3 Bd4?? (better 19...Qc4=) 20.Rg3 Bg7 (20...Kh8 21.Rh3 Be3 22.Kh1 h6 23.Qh6 Kg8 24.Qh7) 21.Qg5 (21.Qg5 Qe3 22.de3 Rfc8 23.Qg7) 1–0. DEFFM – GuestCBXM, freechess.org, 2019.

5.a4 e5 6.Be5+/– d6 7.Bg3 (7.Bc3 d5+/–) 7...Bd7 (7...Ne4 8.Nf3+=) 8.Nc3 Be7 9.Bd3 0-0 10.Nf3 c5 (10...Be6 11.0-0+/–) 11.0-0 Bg4 (11...c4 12.Be2+/–) 12.h3 (12.Be2 Re8+/–) 12...Bh5 (12...Be6 13.Re1+/–) 13.e4 Nd7 (13...c4 14.Be2+/–) 14.Nd5 Ne5 (14...Bf6 15.Bd6 Ba1 16.Be7+-) 15.Be2+- b6? (better is 15...Bf3!? 16.Bf3 Bh4+-) 16.Ne5 Be2 17.Qe2 de5 18.Be5 f6 (18...Bd6 19.Bc3+-) 19.Bc3 (19.Bc7 Qd7+-) 19...Nb7 20.h4 (20.Rfe1 Bd6+-) 20...Nd6 (20...f5 21.h5+-) 21.h5 h6 (21...Re8 22.Qg4+-) 22.a5 Nf7 (22...Rb8+-) 23.ab6 ab6 (23...Qd7+-) 24.Ra8 Qa8 25.Ne7 Kh8 (25...Kh7 26.Qg4 Qe8 27.Qf5 Kh8 28.Ng6 Kg8 29.Ra1+-) 26.Ra1 Qb8 (26...Qb7 27.Ng6 Kg8 28.Nf8 Kf8 29.Qd3+-) 27.Ng6 White prepares the advance e5 27...Kh7 (27...Kg8 28.Nf8 Kf8 29.Qg4+-) 28.Nf8 Qf8 29.e5 (29.e5 f5 30.e6+-) 1–0. Janek – Guttes, internet, 2017.

5.a4 e6 6.Nf3 d5 7.Bc3 Bd6 8.d3 0-0 (8...b6 9.Be2=+) 9.Be2 Re8 (9...a6 10.0-0=+) 10.Qd2= Bc7 11.Be5 c5 12.0-0 Nd7 13.Bg3 (13.Bc7 Qc7 14.Re1 b6=+) 13...Bg3 14.fg3 (14.hg3 e5=+) 14...b6=+ 15.e4 (15.Nc3 Bb7=+) 15...Bb7 16.e5 Rf8 17.Qf4 (17.Qe3 d4 18.Qf4 f6=+) 17...f6 18.ef6 Rf6 19.Qh4 Qe7 20.Nbd2 Raf8 21.c3 e5 22.c4 (22.Rae1 Qd6=+) 22...e4 23.de4 de4 24.Ng5 h6 25.Nge4 Nb3 26.Nb3 (26.Nf6? Nf6 27.Bf3 Nd2–+) 26...Be4 (worse 26...Qe4 27.Qe4 Be4 28.Rf6 Nf6 29.a5+=) 27.Rfe1 g5 28.Qh5? (better 28.Qg4!?=) 28...Ne5–/+ 29.Bg4 Bg6 30.Qh3 (30.Qh6 A) 30...Ng4? 31.Qg6 (31.Re7? Nh6 32.Nd2 R8f7–+) 31...Rg6 32.Re7+-; B) 30...Rd6 31.Bd1 Bb1 32.Qd6 Qd6 33.Rb1 Nc4–+) 30...Qd6 31.Rad1 (31.Qh6 Nf7 32.Qh3 Qd3–/+) 31...Bd3–+ 32.Qh5 Nc4 33.Be2 (33.h4 Nb2 34.hg5 Rg6 35.Rd3 Nd3–+ (35...Qd3?! 36.Bf3 Qd6 37.Re5–/+)) 33...Nb2 34.Bd3 Nd3 35.Re8 c4 36.Rf8 Kf8 (36...Qf8?! 37.Nd4–/+) 37.Qe2 Kg7 (37...cb3 38.Rd3 Qc5 39.Qe3=+) 38.Qe4 0–1. Pierre – Servin, internet, 2019.

5.a4 e6 6.Nf3 d5 7.Be2 Nc4 (7...Bd6!?=) 8.Bc4+= dc4 9.0-0 (9.Qe2 Bd7 10.Qc4 a6 11.ba6 Ra6+/–) 9...Qc7 (9...cb5 10.ab5 Bd7 11.Bf6 Qf6 12.Nc3=) 10.Qe2 Bd6 (10...cb5 11.ab5 Bd7 12.Bf6 gf6 13.Nc3+=) 11.Bf6+/– gf6 12.Qc4 Bd7 (12...cb5 13.Qc7 Bc7 14.ab5+/–) 13.Qh4 (13.Nc3 f5+/–) 13...Be7 (13...cb5 14.Nc3 ba4 15.Ne4+=) 14.c4 c5 (14...cb5 15.ab5 a6 16.d3+-) 15.Qh5 (15.Nc3 h5+/–) 15...b6 (15...e5 16.Nc3 Be6 17.Nd5 Bd5 18.cd5+/–) 16.Nc3+- e5 (16...Bc8!?+-) 17.Nd5 Qd6 18.d4 e4 19.Nd2 f5 20.a5 Bd8 (20...Rd8+-) 21.ab6 Bb6 (21...cd4 22.Ra7 Rb8 23.Rd7 Qd7 24.Ne4 Qe6 25.Nef6 Bf6 26.Nc7 Ke7 27.Ne6 fe6 28.ed4 Rb6+-) 22.dc5 Bc5 23.Ra6 Qe5 24.Nf6 Ke7 25.Nde4! Bb6 (25...fe4 26.Nd5 Double attack (26.Qe5 Pinning; 26.Qe5 Deflection)) 26.Nd5 Kf8 (26...Kd8 27.Qg5 Kc8 28.Nb6 ab6 29.Ra8 Kb7 30.Rh8 Qh8 31.Nd6 Kb8+-) 27.Qh6 Qg7 28.Qd6 Ke8 (28...Kg8 29.Ndf6 Qf6 30.Nf6 Kg7 31.Nh5 Kg8 32.Qh6 Bd4 33.ed4 Bb5 34.Nf6) 29.Qe7 1–0. DEFFM – GuestDXGN, freechess.org, 2018.

5.c4 cb5 6.cb5 Qb6 (6...d5 7.Qa4=) 7.a4 (7.Qa4 d5+=) 7...d6 8.Nf3 Be6 (8...e5 9.Nc3=) 9.Na3 (9.Bd3 Rc8=) 9...Bb3 10.Qc1 Ba4?? (10...Qd8 11.b6 Qb6 12.Bd4=) 11.Bd4?? (better is 11.Nc4 Nc4 12.Qc4 Bb5 13.Qb5 Qb5 14.Bb5 Nd7 15.Ng5+-) 11...Qd8= 12.Nc4 Nb3 13.Qb2?? Na1–+ 14.Qa1 Bb5 15.Nd6–/+ Qd6 16.Bb5= Kd8=. jmeek – raghavendrakarthik, net–chess.com, 2002.

5.c4 c5 6.Nf3 b6 7.Bd3 a6 8.Nc3 d6 9.a4 (9.Be2 e6+=) 9...e5 10.Ne4 Ng4 11.Neg5 (better is 11.h3!? Nh6 12.Qc2=) 11...Be7–/+ 12.Nh7? (12.Nh3 f5 13.e4 0-0=+) 12...Be6 (better is 12...f5!? 13.Qc2 g6–+ (13...Rh7?! 14.Bf5 Rh6 15.Be4–/+)) 13.Be4 Ra7 14.h3 Nf6 (14...Nh6 15.d4 Nc4 16.Bc6 Bd7–+) 15.Nf6+= Bf6 16.Bd3?? (better is 16.d3!?+/–) 16...e4 (better is 16...Nc4!? 17.Bc3 Qd7=+) 17.Bf6= gf6 (17...Qf6!? 18.Be4 Bc4+=) 18.Be4+/– Nc4 19.Qc2 (19.Bc6 Bd7+/–) 19...Ne5 (better is 19...d5!? 20.Bd3 ab5=) 20.Ne5 fe5 21.Bc6 Kf8 22.g4 (22.ba6 Ra6 23.Qd3 Ra5+/–) 22...f6 (22...ab5 23.Bb5 Bg4 24.Qe4=) 23.f3 Ke7 (23...ab5 24.Bb5 Rh4 25.Bc6+=) 24.Qg6 Rg8 (better is 24...ab5!? 25.Bb5 Qg8+/–) 25.Qh7 Bf7 26.Bd5 ab5?? (better is 26...Qe8 27.ba6 Ra6+/–) 27.Qf7 1–0. burbank – sunday29, Live Game Caissa's Web, 2004.

5.c4 d5 6.Qc2 Bd7 7.a4 (7.cd5 Nd5 8.e4 Nf6=) 7...Be6 (7...dc4!? 8.Bc4 Rc8 9.Bf6 Nc4–/+) 8.d3 (8.c5 Nc4=) 8...Qd7 (8...Bf5 9.cd5 cd5 10.Bd4=+) 9.Nf3 Ng4 (9...dc4 10.Ne5 cd3 11.Bd3=) 10.h3+= Nh6 11.Bc3 b6 (11...Qc7 12.Be5 Qd8 13.c5+=) 12.c5 (12.Ba5 ba5 13.Ne5 Qc7 14.Nc6 dc4+/–) 12...f6 (12...Qb7 13.Ba5 ba5 14.Nc3+/–) 13.d4 (13.Ba5 ba5 14.Nd4 cb5 15.ab5 Bf7+/–) 13...cb5? (13...Nc4 14.Bc4 dc4 15.Na3+=) 14.Bb5 (better is 14.Ba5 Bf5 15.c6+-) 14...Nc6+= 15.a5 bc5 16.dc5 a6 17.Ba4 Rc8 18.Nd4 Bf5 19.Qe2 e5 20.Nc6 Rc6 21.0-0 Bc5+= 22.Rc1 0-0 23.Bc6 Qc6 24.Bb4! Qb7? 25.Bc5 Rc8 26.Ba3 Rc1+= 27.Bc1 Bb1 28.Qb2 Qb2 29.Bb2 Bd3 30.Rd1 Bc4 31.Rc1 Kf7 32.e4 Ke6 33.f3 Bb5 34.Rc8 Nf7 35.Rg8 g6 36.Rg7 Ng5?? 37.h4+- Nf7 38.Rh7?? g5?? 39.h5 d4 40.Kf2+- d3 41.Ke3 Nd6 42.Kf2?? Nc4 43.Bc3+- f5 44.h6 fe4+/– 45.fe4 Nd6 (better is 45...g4+-) 1–0. Meybohm,Dirk – Mueller,Werner1, 1989.

5.c4 d5 6.c5 Bd7=.

5.c4 d5 6.cd5 Nd5 7.Nf3 Nc4?? (better is 7...Bg4=) 8.Bc4+- e6 9.bc6 bc6 10.0-0 Bd6 (10...Rb8 11.Be5 Rb4 12.Qc2+-) 11.Bg7 Rg8 12.Bb2 Rb8 13.Qc2 Nb4 (13...h6 14.Qh7 Rg6 15.Ne5 Be5 16.Be5+-) 14.Qh7 Rg4 (14...Rg6 15.Ne5 Be5 16.Be5+-) 15.Ne5 Be5 16.Be5 Rb7 17.d4 f6 (17...Qg5 18.g3 Rb6+-) 18.Qh8 (18...Kd7 19.Be6 Ke6 20.Qd8 fe5 21.Qc8 Rd7 22.f4 ef4 23.ef4+-) 1–0. pierre – lionbold, internet, 2007.

5.Nf3 d5=.

5.a4 Nc4 6.Bc4 dc4 7.Bf6 ef6 8.Nc3 Be6 9.Nge2 Be7 10.Nd4 Bd5 11.Nd5 Qd5 12.0-0 0-0 13.c3 f5 14.Qf3 Qd7 15.Qf5 Qe8 16.Qd5 Bf6 17.Qc4 Qe4 18.Qc7 b6 19.Qc6 Qd3 20.Rfd1 Rac8 21.Qd7 Rfd8 22.Qa7 Qe4 23.Qb6 Bh4 24.Nc6 Re8 25.Qd4 Qf5 26.f4 Qg4 27.Qd3 Bf6 28.Qf1 Qf5 29.Qf3 Qd3 30.h3 Be7 31.Ne7 Re7 32.b6 Rb8 33.a5 h6 34.h4 Reb7 35.Qf1 Qd5 36.c4 Qe4 37.c5 Qe7 38.Qb5 Qh4 0–1. Abdullaevich (1820) – Harenko, lichess.org, 2020.

5.a4 Bf5 6.Bd3 Bd3=+ 7.cd3 Qd6 8.Nf3= 0-0-0?? 9.e4?? de4=+ 10.de4 Qd3 11.Qe2 Qe2 12.Ke2 Ne4 13.Nc3 Nc4?? 14.Ne4+= Nb2 15.Rab1 Nd3 16.Nfg5 Rd7 17.Nf7+= Rg8 18.Rb3 Nf4 19.Ke3 Ng2=+ 20.Kf3 Nh4 21.Kg4 Rd4 22.f3 Ng6 23.Rc1 e6 24.Rbc3 Rd7 25.Nc5?? Rf7 26.Ne6 Bb4 27.Rc4?? Ba5 28.Nc5 Ne5 29.Kg3 Nc4 30.Rc4 Bd2 31.Ne4 Ba5 32.Ng5?? Rf5–+ 33.Nh7 Rh8 34.Kg4 Rf7 35.Ng5 Rf6 36.Ne4 Rg6 37.Kf4 Rh4 38.Kf5 Rgh6 39.Kg5 Rh2 40.f4 –+. Nautiluschess – mahamud, ICS blitz, 2000.

5.Bc3 b6 6.d4 (6.Nf3 a6=) 6...g6 (6...Nc4!?=) 7.Ba5+= ba5 8.Qd2 Ne4 9.Qa5 e6 (9...e5 10.Nc3 ed4 11.ed4+=) 10.Nc3 Nc3 11.Qc3 Bd6 12.Nf3 0-0 13.a4 Bd7 (13...Qe7 14.Rb1+/–) 14.Bd3 f6 (14...c6 15.0-0+/–) 15.0-0 Qe7 16.g3 (16.e4 c6 17.Rfb1 Rfc8+/–) 16...Bb4 (16...e5 17.Qb3 Be6 18.Nd2+=) 17.Qc7 Rfc8 18.Qf4 g5 19.Qg4 e5 20.Bf5 h5 21.Qh3 g4 22.Qh5 gf3?? (better is 22...Bf5 23.Qf5 gf3+=) 23.Qg4+- Kf8 24.Bd7 Rc2 25.de5 Qe5 26.Qb4 Kg7 27.Qg4 Kf7 28.Bf5 (28.Bf5 Rc7 29.Rac1+-) 1–0. marus2 – olgert, internet live, 2001.

5.Bc3 Nc4 6.d3 Nd6 7.a4 Bg4 8.Be2 Bf5 (8...Be2 9.Ne2 e6 10.0-0=) 9.Nd2 e6 10.Ngf3 Be7 11.0-0 0-0 12.h3 Bg6 13.Bb2 c5 14.c4 dc4 15.dc4 Qc7 16.Be5 Rad8 17.Qc1 Nfe4 18.Rd1 b6 (better 18...Qa5=) 19.Bd3 (19.Ne4 Be4 20.Nd2 Bg6+=) 19...Qb7 (better 19...Nf2!? 20.Kf2 Bd3–/+) 20.Ne4 Be4 21.Be2 f6 22.Bb2 e5 23.Ne1 (23.a5 Rd7=) 23...Nf7 (23...a5 24.Bg4=+) 24.Bd3 (24.a5 Rd1 25.Bd1 Rd8=) 24...Nd6 (24...Rd3 25.Rd3 Bd3 26.Nd3 Qe4=+) 25.Be4 (better 25.a5!?=) 25...Qe4–/+ (25...Ne4?! 26.Qc2=) 26.f3 Qc4 27.e4 Qe6 28.Qc2 Nc4 29.Qb3 Kf7 30.Rd3 (30.Rac1 Na5 31.Qc2 Nb3–/+) 30...Nb2 31.Qb2 Rd3 32.Nd3 Qc4 (32...c4 33.Nf2–/+) 33.Qa2 (33.Nf2 Rc8–/+) 33...Qa2–+ 34.Ra2 Rd8 35.Nf2 g6 36.Rc2 Rd4 37.Ra2 c4 38.Kf1 f5 39.Ke2 fe4 (39...Ke6 40.Rc2–+) 40.Ne4–/+ h5 41.Rc2 (41.a5 Rd5 42.Nc3 Rd3 43.ab6 ab6–/+ (43...Rc3?? 44.ba7 Rb3 45.a8Q Rb5 46.Ra7 Rb2 47.Kd1 Rb1 48.Kc2+-)) 41...Ke6 42.Rc3 Kd5 43.g3 Bb4 44.Rc2 Rd3 45.Ra2 (45.Rb2 Ba5–+) 45...Kd4 Black intends c3 46.g4 (46.Ra1 c3 47.Rc1 g5–+) 46...h4 (46...Re3 47.Kf2–+) 47.Rb2 (47.Ra1 c3 48.Rc1 Re3 49.Kf2 Kd3 50.Rc3 Bc3 51.Nc3 Re1 (51...Kc3 52.Ke3 Kb4 53.Ke4 Ka4 54.Ke5 Kb5 55.f4–+) 52.Ke1 Kc3–+) 47...Ba5 (47...Re3 48.Kf2 Rb3 49.Rc2–+) 48.Ra2 (48.Rb1 c3 49.Rc1 Bb4–+) 48...c3 49.Rc2 (49.g5 Re3 50.Kf2 Kd3 51.Nc3 Bc3–+) 49...Re3 50.Kf2 Kd3 51.Rc3 Bc3 52.Nc3 Kd4?? (better 52...Re1 53.Nd5 Re2 54.Kg1 g5–+) 53.Ne4?? (better 53.Ne2 Re2 54.Ke2=+) 53...Ra3 (better 53...Re4 54.fe4 Ke4–+) 54.Nd6 Ra2 55.Kg1 Ke3 56.Nf7 e4 (better 56...Kf3 57.Ne5 Kg3 58.Kf1–+) 57.fe4 Ke4 58.Nh8 (58.Kf1 Ra4 59.Nh8 Kf3–+) 58…Kf3 (58...Kf3 59.Ng6 Kg3–+) 0–1. petrobbo (2075) – Checkmate Charlie (2120), ChessWorld.net, 2013.

5.Bc3 Nc4 6.Nf3=.

5.c4 dc4 6.Na3 (6.Bc3 c5 7.Qa4 b6+=) 6...e6 (6...a6 7.ba6 Ra6 8.Nc4=) 7.Nc4= Nc4 8.Bc4 Bb4 (8...Bd6=) 9.Ne2 (9.Nf3 Bd6=) 9...0-0 (9...Ne4 10.Bg7 Bd2 11.Kf1=+) 10.0-0 (10.Qc2 Bd7=) 10...Qd2 11.Qd2 Bd2 12.Rfd1 Ba5 13.Nf4 (13.Bf6 gf6 14.Rac1 a6=+) 13...c6 (13...a6 14.ba6 ba6 15.Bf6 gf6 16.Rab1=+) 14.Be5 (14.Bf6 gf6 15.Rac1 Rd8=) 14...cb5 (14...Nd7 15.Bd6 Rd8 16.Rac1=+) 15.Bb5 a6 16.Bd3 b5 17.g4 (17.Bf6!? gf6 18.Be4=+) 17...Bb7 (17...Ng4 18.Be4 Ra7 19.Bd6–/+) 18.g5 (18.Bf6 gf6 19.Kf1 Bc3–/+) 18...Nd5 (18...Ne4!? 19.Be4 Be4–/+) 19.Be4=+ Rad8 (19...Nf4 20.Bb7 Ra7 21.Rd7 Ne2 22.Kf1=+) 20.Nh5= f6 (20...f5 21.gf6 g6 22.Nf4=) 21.gf6 Nf6 (better is 21...g6 22.Nf4 Kf7=) 22.Nf4?? (better is 22.Bb7 Nh5 23.Ba6 Rd1 24.Rd1+=) 22...Ne4–+ 23.Ne6 Rd1 24.Rd1 Rf2 25.Rd7 Rf7 26.Rd4 Nc3 27.Rg4 Ne2 0–1. gtate (1930) – smungiu (2035), net–chess.com, 2006.

5.c4 Nc4!? 6.Bc3 Bf5 –/+.

5.c4 Nc4!? 6.Bc4 dc4 –/+.

5.c4 Bf5?? 6.Bf6 (6.cd5!? Nd5 7.Qa4 Bb1 8.Rb1+=) 6...ef6= 7.Nc3 (7.cd5 Qd5 8.Qa4 Qc5=) 7...dc4 (7...Ba3 8.g4 Be4 9.f3=) 8.Qa4 b6 (8...c6 9.bc6 Nc6 10.Bc4=+) 9.Bc4= Bd6 (better is 9...Nc4 10.Qc4 a6=) 10.Bf7?? (better is 10.Bd5 Rc8 11.d4+=) 10...Kf7–+ 11.Nge2 (11.e4 Be6–+) 11...Re8 (11...a6 12.Qh4–+) 12.0-0 Kg8 (12...Bd3 13.Qd4 Be5 14.Qg4–+) 13.f3 (13.e4 Bg4–+) 13...Bd3 14.Rf2 (14.Rfc1 Nc4–+) 14...Be2 (14...a6!? 15.Qd4 Be5 16.Qd8 Red8 17.ba6 Ra6 18.Nc1–+) 15.Re2 c6 16.bc6 Nc6?? (better is 16...Rc8–+) 17.Qc4 Kf8 18.Qc6 Be5 19.d4 Rc8 20.Qe4? Rc3?? 21.de5+= fe5 22.Qh7+/– Qg5 23.h4 Qf6 24.Rf1 Rd8 25.g4 Rdd3 26.g5 Qf7 27.g6 Qg8 28.Qh5 Re3?? 29.Re3+- Re3 30.Qf5 Ke7 31.Qg5 Kd6 32.Qe3 (32...Qa2 33.f4+-) 1–0. umji5 – ThePawnXXXI, Live Game Caissa's Web, 2004.

5.d3 c5 6.a4 b6 7.Nf3 Bg4 (7...e6 8.Nbd2=) 8.Be2 Qc7 (8...e6 9.Nbd2=) 9.Nbd2 Rd8 10.h3 Bh5 11.0-0 h6 (11...e6 12.Bf6 gf6 13.Ne1=) 12.Re1 (12.Be5 Qd7+/-) 12...c4 (12...e6 13.e4+=) 13.Bf6 ef6 14.d4 (14.Nd4 Be2 15.Qe2 Bb4+=) 14...Bb4 15.e4 (better 15.Nh4 Be2 16.Qe2+=) 15...de4 16.Ne4 (16.Qc1!?-/+) 16...Be1-+ 17.Qe1 f5 (17...0-0 18.Qc3-+) 18.Nc3? (better 18.Ng3 Bf3 19.Bf3 Kd7 20.Nf5=) 18...0-0-+ 19.Ne5 Be2 20.Ne2 f6 21.Ng6 Rfe8 22.c3 (22.Qd2 Re4 23.f3 Ree8-+) 22...Qf7 23.Ngf4? (better 23.Nh4 Qd5 24.Nf3-+) 23...g5 24.Qd2 (24.Qb1-+) 24…Nb3 (24...Nb3 25.Qb2 Na1 26.Qa1 gf4 27.Nf4 Qe7-+; worse 24...gf4 25.Re1 f3 26.Ng3 Re1 27.Qe1-+) 0-1. dannysmet (2040) - fery_chess (2040), Rated Blitz game, lichess.org, 2021.

5.d3 Bd7 6.a4 a6 7.c4 e6 8.Nc3 Bb4 9.Qc2 e5 10.Nf3 Bf5 (10...Qe7 11.cd5 Nd5 12.d4–/+) 11.Nh4 (better is 11.cd5 Qd6 12.ba6 ba6 13.e4+=) 11...dc4?? (better is 11...Be6 12.cd5 Bd5–/+) 12.Nf5+- cd3 13.Bd3 (13.Qd3 Qd3 14.Bd3 Nd5+/–; 13.Ng7?! Kf8 14.Ne6 Ke7 15.Bd3 Ke6+-) 13...0-0 14.0-0 c6 (14...ab5 15.ab5 Qd7 16.f4+-) 15.Rad1 (15.Na2 Bd6 16.Rfd1 Bc7 17.ba6 ba6+-) 15...Qc7 (15...cb5 16.Na2 Rc8 17.Qb1+- (17.Nb4?! Rc2 18.Nc2 Qc7+/–)) 16.Ne4 (better is 16.Na2 g6+-) 16...ab5 (16...Nd5+-) 17.Nf6 gf6 18.ab5 (better is 18.Qe2!? Kh8 19.Qg4 Rg8 20.Qb4 ba4 21.Qa4 Rad8+-) 18...c5 19.Nh4 Kh8 20.Bh7 c4 (20...Qb6 21.Qe2 Rg8 22.Bg8+-) 21.Qf5 Qb6 (21...Rg8 22.Bg8 Kg8+-) 22.Qh5 Kg7 23.Nf5 Kh8 24.Bg6 Kg8 25.Qh7 1–0. Dumontelle,Joe – Allaire,R, June, 1979.

5.d3 Bd7 6.a4 e6 7.Nf3 Bb4 8.Nbd2 Bd6 9.Be2 Qe7 10.0-0 e5 11.Bc3 b6 12.Ba5 ba5 13.Nb3 Bb4 14.Qc1 e4 15.de4 Ne4 16.Nfd4 0-0 17.Bd3 Nc5 18.Nc5 Bc5 19.c3 Qh4 20.Nf3 Qh5 21.c4 Bd6 22.h3 Bh3 23.Qc2 g6 24.g3 Qf3 0–1. Phomopsis – kaspetov, lichess.org, 2019.

5.d3 Bd7 6.Nf3 Bb5+= 7.Nc3 Bd7 8.Be2 e6 9.Qd2 Bb4 (9...Nc6!?–/+) 10.a3= Bd6 11.Nd5 Nd5 12.Qa5 b6 13.Qd2 0-0 14.Ne5 Be5 15.Be5 c5 16.c4 Nf6 (16...Ne7 17.0-0=) 17.0-0 (17.Bf3 Rc8 18.Bb7+/–) 17...Ne8? (better is 17...Bc6+=) 18.Bf3+- Rc8 19.Bb7 f6 20.Bc8 Qc8 21.Bb2 e5 22.Rac1 Bc6 23.f4 e4 24.d4 cd4 25.Bd4 Qe6 26.f5 Qd7 27.c5 Nc7? (better is 27...b5+-) 28.cb6 ab6 (28...Nd5 29.ba7 Ra8+-) 29.Qb4 (better is 29.Qc3 Bb5 30.Qc7 Qc7 31.Rc7 Bf1 32.Kf1 Ra8+-) 29...b5?? (29...Nd5 30.Qb3+-) 30.Rfd1 (better is 30.Qc3 Bd5 31.Qc7+-) 30...Nd5 31.Qb2 Rc8 32.g4 Rd8 (32...Ra8 33.Qc2 Bb7 34.Bb2+-) 33.Qb3 (33.Qc2 Rc8 A) 34.Qe4?! Nc3 35.Bc3 Qd1 (35...Be4?? 36.Rd7 h6 37.Rd4+-) 36.Rd1 Be4+=; B) 34.Bb2+-) 33...Kf8? (better is 33...b4!? 34.Rd2 ba3 35.Qa3 Qe8+-) 34.Qc2 (34.Bb6! Rb8 35.Rc6 Qc6 36.Rd5 g6 37.Bc5 Kg7+-) 34...Rc8 35.Qe4 Re8? (35...Nc3 A) 36.Bc3?! Qd1 (36...Be4?? 37.Rd7 Kg8 38.Rd4+-) 37.Rd1 Be4 38.Bb4 Ke8+=; B) 36.Bc5 Kg8 37.Rd7 Ne4 38.Rdd1+-) 36.Qd3 (36.Qc2 Bb7 37.Bc5 Kg8+-) 36...Bb7 (36...Qb7+-) 37.Bc5 Kg8 38.e4 Re5 39.ed5 Rd5 (39...h5 40.Bf2 Rd5 41.Qb3+-) 40.Qb3 Kh8 (40...h5 41.Rd3 Kh7 42.Rh3+-) 41.Rd5 Qc6 (41...Qd5 42.Qd5 Bd5+-) 42.Rd8 (42.Rd8 Qe8 43.Re8) 1–0. croach (2360) – pallen (2300), net–chess.com, 2016.

5.d3 e6 6.a3 Bd6 7.Bc3 b6 8.Be2 Nb7 9.Nf3 Nc5 10.0-0 0-0 11.Be5 Bb7 12.d4 Nce4 13.Nbd2 Nc3 14.Qe1 Ne2 15.Qe2 a6 16.a4 a5 17.Qd3 Ne4 18.Ne4 Be7 19.Bf4 de4 20.Qd2 ef3 21.g3 Qd7 22.Qd3 f5 23.c4 Be4 24.Qb3 Bb4 25.Be5 Qf7 26.Rad1 Qh5 27.c5 Qh3 28.Qe6 Kh8 29.Bg7 Kg7 30.Qe7 Rf7 31.Qe5 Kg8 32.Qh8 Kh8 33.Kh1 Qg2 White king mated 0–1. Crusader Rabbit (1620) – pjq (1760), ChessWorld.net, 2016.

5.Nf3 a6 6.ba6 ba6 7.Na3 (7.Be2 Rb8 8.Be5 Nc6=) 7...Nc6 (7...e6 8.Rb1=) 8.c4 e5 (8...Bd7 9.d4=) 9.Ne5 (better is 9.cd5 Qd5 10.Bc4=) 9...Ba3?? (better is 9...Ne5 10.Be5 Ba3 11.Qa4 Nd7 12.Bg7 Rg8=+) 10.Qa4?? (better is 10.Nc6 Qd6 11.Bf6 Qf6 12.cd5+/–) 10...Bb2–+ 11.Rb1?? Be5 12.Qc6 Bd7 13.Qc5 c6 14.cd5 cd5 15.Be2 Rc8 16.Qb4 a5 17.Qa3 d4 18.0-0 Ng4 19.f4 Qh4 20.Bg4 Bg4 21.fe5 Rc6?? 22.Rb8+- Bc8?! 23.Qa4 Kd7 24.Rf7 Ke6 25.Qb3 (25.Qb3 Ke5 26.Rb5 Ke4 27.d3 Ke3 28.Re5 Kd2 29.Qb2 Rc2 30.Re2 Ke2 31.Qc2 Ke3 32.Rf3#; 25.Qc6?! Kf7 26.Qd5 Kg6 27.Rb6 Kg5 28.e6 Kh6=) 1–0. aschellen – white_gandalf, internet, 2006.

5.Nf3 a6 6.ba6 ba6 7.c4 e6 (better 7...Nc4!? 8.Bc4 dc4=) 8.cd5+- ed5 9.Qa4 Nc6?? (better 9...c6 10.Bc3 Nc4+-) 10.Qc6+- (10.Qc6 Bd7 11.Bf6 Bc6 12.Bd8 Kd8 13.Nc3+-) 1–0. DEFFM – GuestTXVF, freechess.org, 2019.

5.Nf3 Qd6 6.a4 e5 7.Be5 Qc5 8.Bd4 Qd6 9.Bc3 Nc4 10.Na3 Na3 11.Be5 Qe6 12.Ra3 Ba3 13.Bc7 0-0 14.Nd4 Qd7 15.Bg3 b6 16.c4 Bb7 17.cd5 Bd5 18.Nf3 Rfe8 19.Be2 Rac8 20.0-0 Bd6 21.Bd6 Qd6 22.d4 h6 23.Ne5 Nd7 24.Nd7 Qd7 25.Bf3 Bf3 26.Qf3 Rc2 27.Ra1 Kh8 28.h3 f6 29.Qe4 Re4 30.a5 0–1. axtur777 – mfazomnyama, lichess.org, 2020.

5.Nf3 Qd7 6.a4 (6.Ne5 Qe6+=) 6...Nc4 (6...Qd8 7.Bc3 c5 8.Be2=) 7.Bc4+= dc4 8.Ne5 Qd6 (8...Qd5 9.0-0 Nd7+=) 9.Nc4 (9.Na3 Be6+/–) 9...Qc5 (better is 9...Qd5!? 10.Ne5 Qg2=) 10.Nba3 (10.d3 a6+/–) 10...e5 (better is 10...Be6!? 11.Bd4 Qg5+/–) 11.0-0 1–0. GuestZFJR – GuestGQND, freechess.org, 2016.

5.Nf3 Bd7 6.a4 c6 7.Ne5 e6 8.Be2 (8.Bd3 Bd6=) 8...Bd6 9.Nd7 (9.0-0 0-0=) 9...Qd7 (9...Nd7 10.0-0 0-0 11.f4=) 10.0-0 0-0 (10...Qc7 11.f4=) 11.Bf6+= (11.Bf6 gf6 12.f4+=) 1–0. DEFFM – GuestFNHV, freechess.org, 2018.

5.Nf3 Bd7 6.Be2 Ne4 (6...Nc4 7.Bf6 ef6 8.Nc3=) 7.0-0+= Nc4 8.Bc4 dc4 9.a4 (9.Ne5 A) worse 9...Bb5 10.Nf7 Kf7 11.Qh5 Ke6 12.Qe5 (12.Qb5?! Qd5 13.Qd5 Kd5+=) 12...Kf7 13.Qb5+-; B) 9...Nd6+=) 9...a6 (9...Bg4!?=) 10.Ne5+= ab5 11.ab5 Ra1 12.Ba1 Bb5 (12...Nd6!? 13.Na3 Be6+=) 13.Nf7!+/- Kf7 14.Qh5 g6 (14...Ke6!? 15.Qe5 Kf7 16.Qb5+-) 15.Qb5+- Nd2?? (better 15...Nd6 16.Qd5 e6 17.Qf3 Kg8 18.Bh8 Kh8+-) 16.Nd2 (worse 16.Bh8 c6 17.Qb4 Nf1 18.Qc4 e6 19.Qf1 Bg7 20.Bg7 Kg7+-) 16...Qd2 (16...Bg7 17.Nc4 Ba1 18.Ra1 b6+-) 17.Qc4 Ke8 18.Bh8 (18.Bh8 c6 19.Bd4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Bd7 6.Ne5 e6 7.Nd7 Nd7 8.Qg4 e5 9.Be2 h5 10.Qh3 Nc4 11.Bc4 (11...dc4 12.Qf3+=). Grott,Peter (1945) – Kotow,Wladimir, DESC, 2000.

5.Nf3 e5 6.Be5 c6 (6...Bd6 7.Nc3+/–) 7.c4 (7.Bd3 Bd6+/–) 7...cb5 8.cd5 Nd5 (8...Bd7 9.e4+/–) 9.Bb5+/– Bd7 10.Bd7 Kd7 (10...Qd7!? 11.0-0 Nc6+/–) 11.Qa4+- Kc8 (11...Nc6 12.Qb3 Ke8 13.Qb7+-) 12.0-0 f6?? (12...Nc6+-) 13.Rc1 Nc7 (13...Nc6 14.Rc6 bc6 15.Qc6 Nc7 16.Bc7 Qc7 17.Qa8 Qb8 18.Qc6 Kd8+-) 14.Bc7 (14.Bc7 Nc6 15.Bd8 Kd8 16.Qb5+-) 1–0. DEFFM – GuestDNYG, freechess.org, 2017.

5.Nf3 Bf5 6.a4 b6 7.Be2+= c6 8.Ne5 (8.0-0 c5+=) 8...c5 9.d3 Nb7 10.c4 dc4 (10...e6 11.Bf3+=) 11.Bf3+/- Qc7 12.a5 Rd8? (better 12...ba5 13.Nc4 Rc8+/-) 13.Bc6+- Nd7 (13...Bd7 14.ab6 ab6 15.Ra7 Bc6 16.bc6 cd3 17.cb7+-) 14.ab6 (14.Nc4?! Nd6+/-) 14...ab6 15.Ra7 (15.Nc4?! Nd6+-; 15.dc4?! Na5 16.Qf3 Be6 17.Bd7 Rd7 18.Nd7 Qd7+-) 15...f6 (15...cd3 16.Qf3 (worse 16.Rb7 Qc8+-) 16...f6 17.Rb7+- (worse 17.Qf5 fe5 18.Be5 Nd6 19.Qh5 g6 20.Rc7 gh5 21.Bh8 Nf7+-; 17.Bb7?! Ne5 18.Qf5 Qb8 19.Be5 Qa7 20.Bc6 Kf7+=)) 16.Rb7 Qc8 (16...Qd6 17.Nc4 Qd3 18.Qd3 Bd3 19.Nb6 Bb1 20.Nd7+-) 17.Nc4 e6 (17...Kf7+-) 18.Rd7 Rd7 19.Nb6 Qc7 20.Nd7 Qd6 (20...Kf7 21.e4 Bg6 22.h4+-) 21.e4 Bg6 22.Nf6 Kd8 23.Qa4 (23.Qa4 Qc7 24.Qa8 Qc8 25.Qa5 Ke7 26.Qa7 Kd8 27.Bc3+-) 1-0. PEREIRA – cotillion, internet, 2021.

5.Nf3 Bf5 6.d4 c6 7.a4 cb5 8.ab5 Qd7?? (better 8...e6=) 9.Ra5+- e6 (9...Qc7 10.Bc3+-) 10.Nbd2 (10.Ra4 Qc7 11.c4 Be7+-) 10...Bb4 (10...Qc7 11.Ra2+-) 11.Ra1 (11.Ra4 a5+-) 11...0-0 (11...Ne4 12.b6 a6 13.c4+-) 12.c4 Rac8 (12...dc4 13.Bc4 Ne4 14.Qa4 Bd2 15.Nd2 Nd2 16.Kd2+-) 13.cd5 (13.c5!? Ra8+-) 13...Nd5 14.Ne5 Qd6 (14...Qd8 15.Nec4 Nb6+-) 15.Be2 (better 15.Nec4 Qe7 16.Ra7+-) 15...Bc2+- 16.Qc1 Be4? (16...Bb3 17.Bc4 Bc4 18.Nec4 Bd2 19.Qd2 Rc4+-) 17.Bc3?? (17.Nec4 Rc4 18.Bc4 (18.Qc4?! Bg2 19.Rf1 Qh2+-) 18...Bg2 19.Rg1 Qh2 20.Rg2 Qg2 21.Bf1+-) 17…Rc3 (17...Rc3 18.Qd1 Rc2–+) 0–1. SieStein – ADG66, lichess.org, 2019.

5.Nf3 Ng4 6.Be2+= Nc4 7.Bc4 e5?? (better is 7...dc4 8.Qe2 Qd5+=) 8.Be2 Bd7 (8...e4 9.Ne5 Ne5 10.Be5 Qg5+-) 9.h3 Nf6 10.Ne5 Ne4 (10...Bf5 11.Bd4+-) 11.Bh5 (better is 11.0-0+-) 11...g6 (11...Be6+-) 12.Nd7 Qd7 13.Bh8 gh5 14.Qh5 0-0-0 (14...Qb5 15.Qe5 Kd8 16.Qf5+-) 15.Bd4 (15.Qh7 Qb5 16.Qf7 Qc6+-) 15...b6 (15...Qb5 16.Qh7 c5 17.Qf5 Qd7 18.Qd7 Kd7 19.Bb2+-) 16.0-0 (16.Qh7 Bc5 17.Bc5 Nc5+-) 16...Nd6 17.Qd5 f6 (17...Qb5 18.Qb5 Nb5+-) 18.Qa8 1–0. DEFFM – GuestMPDZ, freechess.org, 2018.

5.Nf3 h6 6.Bf6 ef6 7.c4 (better is 7.Be2!?=) 7...Nc4–/+ (7...dc4?! 8.Qa4 b6 9.Bc4 Nc4 10.Qc4=) 8.Qc2 Bd6 (8...Ne5 9.Be2–/+) 9.Bc4+= dc4 10.Qc4 0-0 11.Nc3 b6 (11...a6 12.d4+=) 12.Nd4 Bb7 (12...a6 13.0-0=) 13.0-0 (better is 13.Nf5=) 13...c5?? (13...Be5 14.Nb3=) 14.Nc6?? (better is 14.bc6 Bc8 15.Ndb5+-) 14...Bc6+= 15.bc6 Be5 (15...Rc8 16.d4 Rc6 17.d5+=) 16.f4 (16.d4 cd4 17.ed4 Qd4 (17...Bd4? 18.Rad1+-) 18.Qd4 Bd4=) 16...Bd6 (16...Bc3!? 17.dc3 Qe8–/+) 17.a4 (17.Qd5=) 17...a6 (17...Rc8!?=) 18.Rab1 (18.Nd5 Re8+/–) 18...Qc7 (18...Re8!?+/–) 19.Nd5 Qc6 20.Rb6 Qd7 21.Ra6 Rab8 (21...Ra6 22.Qa6 Rd8 23.Nb6+/–) 22.Rb6 Rbe8 (22...Rb6!? 23.Nb6 Qa7 24.Nd5+/–) 23.Rfb1 Qf5 (23...Ra8 24.Qb5 Rfd8 25.Qd7 Rd7 26.R6b5+-) 24.d3 (better is 24.R1b5 Qe6 25.Rc5+-) 24...Rd8?? (24...Qe6 25.R1b5+-) 25.e4 (better is 25.Rd6 Kh8 26.e4+-) 25...Qg4 26.h3 (26.a5 Bf4 27.Qc5 Qh4+-) 26...Qg3 27.Rd6 (better is 27.Rf1!?+-) 27...Rd6+= 28.Ne7 (better is 28.Rd1!?+=) 28...Kh7 The backward pawn on d3 becomes a target 29.Nd5 Rc6 0–1. GuestLKWQ – GuestLXMT, freechess.org, 2017.

5.g3 Bf5 6.Bg2 Be4 7.Be4= Ne4 8.d3 Nc5 9.Ne2 e6 10.Nf4 f6 11.Qh5 Kd7 12.Nc3 Qe8 13.Qh3 Rd8 14.Ncd5+/– Kc8 15.a4 Qd7 16.Nc3 e5 17.Qd7+/– Rd7 18.Nfd5 e4 19.Rd1 ed3= 20.cd3 Na4 21.Na4 Rd5=+ 22.b6 Bb4 23.Bc3= Bc3 24.Nc3+= Rc5 25.ba7 Kd7 26.Ne4 Rd5 27.f4 Rb5 28.h4 Ra8 29.h5 h6 30.Rc1 c6 ½–½. Mear,D – Laws_Wall,R, Newcastle, 1995.

6.a4 a6 7.Ne5 e6 8.Bd3 Bd6 9.0-0 0-0 10.f4 Bc5 11.Qe2 d4 12.ba6 de3= 13.de3 Ne4?? 14.Be4+- Ba6 15.Nd3 f5 16.Ba8 Qa8 17.Ba3 Ba3 18.Na3 Qe4 19.Nb5 Nc4 20.Nc7 Bb7 21.Rf3 Rc8 22.Nb5 Na5 23.Nd6 Qc6 24.Nc8 Qc8 25.Rh3 Nc4 26.Qh5 h6 27.Rg3 Qf8 28.Qh6 Ne3 29.Qe6 Qf7 30.Qf7 Kf7 31.Re3 Be4 32.Rb1 Ke6 33.Rb6 Kd5 34.a5 Kc4 35.Rg3 Kc3 36.Nc5 Kc2 37.Ne4 fe4 38.a6 Kd2 39.a7 e3 40.a8Q e2 41.Qa2 Ke1 (41...Kd1 42.Rb1) 1–0. pierre – orlik45, internet, 2008.

6.a4 Be6 7.Be2+= g6 (7...a6 8.Ne5+=) 8.Nd4 (8.0-0 Bg7+=) 8...Bd7 9.0-0 Bg7 10.Na3 (10.Nc3 0-0=) 10...0-0 11.c4 (11.Nf3 c5=) 11...dc4 (11...c5 12.Nf3=) 12.Nc4+= Nc4 (12...c5 13.Na5 cd4 14.Nb3 de3 15.de3+=) 13.Bc4 e5 14.Nc6 (14.Ne2 Re8+=) 14...Bc6 15.bc6 e4 (15...Ne4 16.d3 Nd6 17.Bd5+=) 16.Qc2 (16.f3 Qd6 17.Ba3 Qc6+/–) 16...Re8 (better is 16...Qe8+/–) 17.Ba6 (17.f3 ef3 18.Rf3+-) 17...Qd6 (17...Ng4 18.Bg7 Qd6=) 18.Bb7 (better is 18.f3!?+=) 18...Rad8–/+ 19.Rad1 (19.Bc3 Ng4 20.g3 Bc3 21.dc3 Qd3–/+) 19...Ng4 20.g3 h5 (20...Bb2!? 21.Qb2 Ne5–/+) 21.Bg7= Kg7 22.Qc3 Kh6 23.Ba6 h4 24.Be2 Ne5=+ 25.f4 ef3 26.Bf3= hg3 27.hg3 g5 28.Kg2 Kg6 29.Be2 f5 30.Rh1=+ Rh8 31.Rh8 Rh8–/+ 32.d4?? Ng4 33.Bg4+/– fg4 34.d5 Rh3 35.Qd3+- Kh5?? 36.e4 Qb4 37.e5 Qb2?? 38.Rd2 Qe5 39.Qh7 1–0. HeresJhonny – american3xpress, Caissa.com, 2004.

6.Bc3 a6+=.

6.Be2 Bb7 7.d3 e6 8.0-0 Bd6 9.Nbd2 0-0 10.c4 dc4 11.Nc4 Nc4 12.dc4 Qe7 13.Rc1 Rad8 14.Qc2 Be4?? (14...Ng4 15.h3 Bf3 16.gf3=) 15.Qb3 h6 16.Rfd1 Ng4 17.h3 Bf3 18.Bf3 Nh2? 19.Bc6 Qg5 20.f4 Qg3+/– 21.Qc3 Bc5 22.Qg7?? Qg7–+ 23.Bg7 Be3 24.Kh2 Bf4 25.Kh1 Bc1 26.Rc1 Kg7 27.Bf3 Rd2 28.a4 f5 29.Re1 Rfd8 30.Re6 Ra2 31.Re7 Kf6 32.Rc7 Ra4 33.c5 bc5 34.Rc5 Ra1 35.Kh2 f4 36.Rc6 (36.Rc6 Kg7 37.Rc7 Kg8 38.Rc6–/+) 0–1. Fournier,Frederic (1935) – ezegrim (1835), Active (7/0), 2005.

6.Be2 Bb7 7.d3 e6 8.a4 Be7 9.Nbd2 0-0 10.0-0 c5 11.bc6 Nc6 12.c4 dc4 13.Nc4 Rc8 14.Rc1 Nd5 15.e4 Nc7 16.Nce5 Ne5 17.Be5 Bf6 18.Bf6 Qf6 19.Qb3 Na6 20.Rc8 Rc8 21.Qb2?? Qb2–+ (21...Qb2 22.Bd1 Nb4–+) 0–1. Fournier,Frederic (1890) – Floiracais (1890), Active (5/0), 2005.

6.Be2 Bd7 7.a4 e6 8.0-0 c5 9.Ne5 Nb7 (9...Bd6 10.f4+=) 10.Bh5 g6 (10...Nd6 11.Na3+=) 11.Nd7+/- Qd7?? (better 11...Kd7 12.Bf3 Kc8+/-) 12.Bf6+- Rg8 13.Bf3 Be7 14.Bb2 Nd6 15.d3 c4 16.e4 de4 17.de4 Rc8 (17...0-0-0 18.Qe2+-) 18.Nc3 (18.Qe2!? Rc7+-) 18...Bf6 19.Qe2 Bg7 (19...Be5 20.Rfd1+-) 20.e5 Nf5 21.Rfd1 Qe7 22.Ba3 Qc7 (22...Qh4 23.g3 Nd4+-) 23.Bc6 (23.Bc6 Qc6 24.bc6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 e6 7.0-0 (7.Ne5 a6=) 7...Bd7 (7...a6 8.Ne5=) 8.Ne5+= Be7 (8...c6 9.a4+=) 9.c4 (9.Nc3 c6+=) 9...0-0 (9...dc4 10.a4=) 10.cd5+= ed5 (10...Nd5 11.Qc2+=) 11.Qc2 Bd6 (11...Rc8 12.Bd3+=) 12.Nd7 Nd7 13.f4 (13.Qf5 Nc5+/–) 13...Nf6 (13...a6 14.a4+=) 14.Bd4 (14.Bd3 g6+/–) 14...h6 (14...a6 15.ba6 Be7 16.Nc3+=) 15.Nc3 Rc8 (15...Be7!?+/–) 16.Bf6+- Qf6 17.Bg4 Rcd8 (17...Ra8 18.Nd5 Qd8 19.d4+-) 18.Nd5 Qh4 19.Bf5 Bb4?? (19...Rfe8+-) 20.Nb4 1–0. DEFFM – GuestBXNY, freechess.org, 2018.

6.Be2 Bg4 7.0-0 (7.Bf6 gf6 8.d4 e6+=) 7...Nc4 (7...e6 8.Ne5 Be2 9.Qe2=) 8.Bc4 (8.Bf6 ef6 9.Nd4 Be2 10.Qe2 a6+/–) 8...dc4 9.h3 (9.Qe2 a6 10.Qc4 ab5 11.Qb5 Qd7 12.Qd7 Nd7+=) 9...Bh5 (9...Bd7 10.a4+=) 10.g4 (10.Qe2 Qd5 11.Nc3 Qf5=) 10...Bg6= 11.Ne5 (11.Na3 Qd5 12.Ne5 c3 13.Bc3 e6=) 11...Qd5 12.a4 (12.Na3=) 12...Be4 (12...Nd7!? 13.f4 Ne5 14.Be5 h5+=) 13.f3+/– Bg6 14.Na3 (14.Ng6?! hg6 15.Kg2 a6=) 14...h5 (14...a6 15.Nac4 e6 16.e4+/–) 15.Nac4 Nd7 (15...hg4 16.hg4 (worse is 16.Ng6 fg6 17.Ne5 gh3+=) 16...a5 17.e4+/–) 16.e4 (better is 16.Ng6 fg6 17.Qe2+-) 16...Qc5?? (better is 16...Qe6+/–) 17.d4+- Qb4 18.c3 Ne5 19.cb4 (19.Ne5 Qb2 20.Qd3 hg4+-) 19...Nc4 20.Qc2 Ne3 (20...hg4 21.Qc4 Rd8 22.Qc6 Rd7 23.hg4 e6+-) 21.Qc6 Kd8 22.Qa8 Kd7 23.Qc6 Kd8 24.Rfc1 (24.Rfc1 f6 25.Qa8 Kd7 26.Rc7 Ke6 27.d5 Kf7 28.d6 hg4 29.d7+-) 1–0. GuestSWHX – GuestSSQC, freechess.org, 2018.

6.Be2 g6 7.0-0 Bg7 8.d4 0-0 9.Nbd2 a6 10.c4 e6 11.a4 Nb7 12.cd5 ed5 13.Ne5 Nd7 14.Nc6 0–1. Orang4Utan (1655) – RussianLampard (1640), lichess.org, 2020.

6.Ne5 a6 7.Qf3=.

6.Ne5 e6 7.Bd3 Bd6 8.0-0 0-0 9.f4 Bb7 (9...a6 10.a4=) 10.Ng4 (better is 10.Bc3=) 10...Nc4?? (better is 10...Ne4=) 11.Nf6+- gf6 (11...Kh8 12.Qh5 h6+-) 12.Qg4 Kh8 13.Qh4 (13.Qh4 h6 14.Qh6 Kg8 15.Qh7) 1–0. DEFFM – GuestRLBT, freechess.org, 2018.

6.Bc4 e6?? 7.Bd3+- h5 (7...Bd6 8.0-0+-) 8.Ne5 Qe7 9.Ba3 c5 (9...Qd8 10.Bf8 Kf8 11.Qf3+-) 10.bc6 Qd8 (10...Qc7 11.cb7 Bb7+-) 11.cb7 Bb7 (11...Rb8 12.bc8Q Qc8 13.c4 Ba3 14.Qa4 Nd7 15.Na3+-) 12.Bb5 Nd7 13.Bd7 Qd7 14.Nd7 Kd7 15.Bf8 Raf8 16.c4! Ba6 (16...dc4 17.Qa4 Double attack (17.Qa4 Decoy)) 17.Qa4 Ke7 18.Qa6 Ra8 19.cd5 Rh6 20.Qb7 Kf6 21.Qa8 Rg6 22.de6 (22.d6 Rg5 23.Nc3 Kf5 24.d7 Kg6 25.d8Q Rc5 26.Qh8 Rg5 27.Qaf8 Kf6 28.Qd8 Kg6 29.Qg5 Kg5 30.Qg7 Kf5 31.e4 Kf4 32.Qg3) 22...Ke6 23.Nc3 f5 (23...Ke7 24.Rc1 h4 25.Nd5 Kd7 26.Qc8 Kd6 27.Qc6 Ke5 28.Nf6 Rf6 29.Rc5) 24.Rb1 Rg4 (24...Rh6 25.Qa7 f4 26.Rb6 Kf5 27.Qf7 Rf6 28.Rb5 Kg4 29.Qh5) 25.Qc6 Ke5 (25...Kf7 26.Rb7 Kg8 27.Qe8 Kh7 28.Qh5 Kg8 29.Rb8) 26.Rb5 1–0. Silent Move (2115) – Great Big Stees, redhotpawn.com, 2016.

7.0-0 b6 8.Qe2+/– Be6 (8...a6 9.a4+/–) 9.e4 (9.Ng5 Qd5 10.Ne6 Qe6+/–) 9...h6 (9...a6 10.a4+/–) 10.e5 (10.Nd4 Qd7+/–) 10...Nh7 11.Nd4 Bd5 12.e6 Ng5 (12...a6 13.ef7 Bf7 14.Ne6 Be6 15.Qe6 ab5 16.Qc6 Kf7 17.Qb5+/–) 13.ef7 Nf7 14.Nc3 g5?? (better is 14...e5 15.Nf3 Qd6+/–) 15.Nd5+- Qd5 16.Ne6 Rg8 (16...Rc8 17.Bh8 Nh8+-) 17.Nc7 (17.Nc7 Kd7 18.Nd5+-) 1–0. DEFFM – GuestKNJH, freechess.org, 2018.

7.0-0 Bd7 8.Nc3 c6 9.a4 cb5 10.ab5 Qb6 11.e4 (11.Ra4 Bb5 12.Nb5 Qb5+=) 11...Bb5 12.e5 (12.Nb5 Qb5 13.Bf6 ef6=) 12...Nd7 (12...Bc6 13.ef6 Qb2 14.Ne5 gf6 15.Nc6 bc6 16.Qg4=) 13.e6 fe6 14.Ng5 (14.Nb5 Qb5 15.Bc3 a5=) 14...e5 (14...Bc6 15.Rb1 e5 16.Qe2=) 15.Nb5 Qb5 16.Ne6 Qb2?? (better is 16...Qc6 17.Qg4 g6=) 17.Rb1+/– Qa3 18.Nc7 Kd8 19.Na8 e6 (better is 19...b5!?+/–) 20.Rb7+- 1–0. DEFFM – GuestFCBS, freechess.org, 2018.

7.0-0 Bg4 8.h3 Be6 (8...Bh5 9.Bf6 gf6 10.d3=) 9.Ng5 (9.Nc3 a6+=) 9...Bd7 10.a4 g6 (better 10...a6!?=) 11.Qf3+- c6 (11...Bc8 12.Na3+-) 12.Na3 (12.Ne4!? Bg7 13.Bf6 ef6 14.Nd6 Ke7 15.Nc4+- (worse 15.Nb7 Qb6=+)) 12...Bg7+= 13.Nc4 Rb8? (13...0-0!? 14.Ne5 cb5 15.Qb7 Rb8 16.Qa7 Ra8+-) 14.Ne5 (14.Ne4 0-0 15.Bf6 ef6+-) 14...0-0+- 15.c4 (15.Nd7 Qd7 16.Be5 h6 17.Bb8 Rb8+-) 15...h6 16.Ngf7 (16.Nd7?! Qd7 17.Be5 hg5 18.Bb8 Rb8=) 16...Rf7 (16...Qe8 17.Qg3 (17.Nd7?! Nd7 18.Nh6 Kh7=) 17...Bf5 18.d3 Rf7 19.e4+-) 17.Nf7 Kf7 18.Bd4 (18.Be5 Rc8 19.d4 Kg8+-) 18...Qa5 (18...Ra8 19.Be5+=) 19.e4 Qd2? (better 19...Kg8+-) 20.Rad1+- Qg5 (20...Qc2 21.Bf6 Bf6 22.Rd7 Qc4 23.Qf4+-) 21.Bf6 Bf6 (21...Qf6 22.Qf6 Bf6 23.Rd7+-) 22.Rd7 cb5 (22...Kg7 23.Rfd1+-) 23.ab5 (better 23.Rd5 e5 24.ab5 Qf4 25.Rd7 Be7+-) 23...Rc8 (23...Qe5 24.Rfd1 Rc8 25.R1d5+-) 24.Rd5 (worse 24.Rb7 Kg7 25.Qd3 Qc5+-) 24…Qd2 1–0. DEFFM – GuestKDGH, freechess.org, 2020.

7.Nc3 a6 8.ba6 Ra6 9.a4 (9.Qe2 Be6+= 10.0-0 Ra5 11.Nd4 Qd7 12.Rfb1; 9.Ne5 Qd6 10.f4 Bf5 11.Nb5 Qb6 12.a4) 9...e6 (9...Bg4 10.h3 (10.Qe2 Rc6 11.h3 Bf3 12.Qf3) 10...Bh5 11.Qe2= Rb6 12.Nb5; 9...Ra5 10.Qe2 e5 11.Qc4 Be6 12.Qd3) 10.Nb5 (10.Ne5 Bb4+= 11.Qe2 0-0 12.0-0) 10...Bd7 (10...c6 11.Nc3= Qb6 12.Rb1) 11.Bf6 (11.0-0 c6 12.Nc3= 0.22 (12.Bf6 gf6=)) 11...gf6 12.Nfd4 (12.0-0 Rg8=) 12...e5=+ 13.Nf3 e4 14.Nfd4 c5 15.Ne2 Qa5 (15...Rg8 16.Ng3=) 16.Nec3 Bc6 (16...Rg8!?=) 17.0-0+/– Rg8 18.h3 (18.Qh5 Qd8+=) 18...Bd7 (18...f5 19.Na3 Qd8 20.Nc4+=) 19.Ne4 Bh3= 20.Nf6?? Rf6–+ 21.g3 Bf1 22.Qf1 Rh6 23.Qg2 Qb6 24.Qe4 Be7 0–1. guest468 – guest194, ICC, 1999.

7.Nc3 Qd6 8.Qe2 Qc5 9.0-0 (9.e4 e5 10.a4 Bg4 11.a5 a6 12.Ba3; 9.a4 Bg4 10.a5 Nd5 11.a6 b6 12.Ra4; 9.d4 cd3 10.cd3 e5 11.0-0 Be7 12.Rfc1; 9.d3 Qb4 10.0-0-0 cd3 11.Qd3 Be6 12.e4) 9...e5 10.d4 cd3 11.cd3 Be6 12.Rac1.

7.Nc3 Qd6 8.e4 Bg4 (8...e5 9.Qe2 Qc5 10.a4 Bg4 11.a5 a6 12.Ba3) 9.h3 (9.Qe2 0-0-0 10.e5 Bf3 11.gf3 Qb4 12.Rb1) 9...Bf3 10.Qf3 e5 11.Rd1 a6 12.Qf5.

7.Qe2 Qd5 8.Na3 Bg4 (8...Bd7 9.Qc4 Qc4 10.Nc4 Bb5 11.Nce5+=) 9.Qc4 (9.Nc4 Bf5+=) 9...Qc4 (better is 9...Bf3!? 10.gf3 Qf3=) 10.Nc4+/– Bf3 (10...e6 11.Nfe5+/–) 11.gf3 e6 (11...g6 12.Bf6 ef6 13.d4+/–) 12.Bf6 (12.Rg1 a6 13.a4 Nh5+/–) 12...gf6 13.a4 0-0-0 (13...Rg8 14.Ke2+/–) 14.Ke2 Bc5 (14...Rg8 15.Rhg1 Bd6 16.Nd6 cd6 17.c4+/–) 15.d4+- Be7 (15...Bb4 16.a5+-) 16.Nd2 (16.Rhg1 Rhg8+-) 16...Rhg8+/– 17.Rhg1 Rg1 (better is 17...Rg6!?+/–) 18.Rg1+- e5 (18...Rd5 19.Rg8 Kd7 20.Ra8+-) 19.c3 ed4 (19...Kd7 20.Rg7+-) 20.cd4 c5 (20...h5 21.Rg7 Rd5 22.Ne4+-) 21.dc5 Bc5 22.Ne4 (22.Rc1 b6 23.Ne4 Kb7 24.Nc5 bc5 25.Rc5 a6+-) 22...Bb4 23.Rc1 Kb8 24.Rc4 Ba5 (24...Be7 25.Ng3+-) 25.Rd4 (25.Nf6 Rd2 26.Kf1 Bc7+-) 25...Rc8 (25...Rd4 26.ed4 Bd8 27.h3+-) 26.Nf6 (26.Rd7 Rc2 27.Kd3 Rc7 28.Nf6 Rd7 29.Nd7 Kc8+-) 26...Rc2 (26...Bc3 27.Rf4 Bf6 28.Rf6+-) 27.Kd3 (27.Kf1!? Rc1 28.Kg2 Rc2+-) 27...Rd2 (27...Rf2 28.Rd7+-) 28.Ke4 Rd4?! (28...Rf2 29.h3 Kc8+-) 29.ed4 h6 30.Kd5 (30.Ng4 h5 31.Ne5 Be1+-) 30...Kc7 (30...Bc7 31.h3+-) 31.Ne4 (31.Ne8 Kb6+-) 31...Bb6 (31...Bb4 32.Ke5 Ba3 33.Ng3+-) 32.h4 Kc8 (32...Ba5 33.Nd6+-) 33.h5 Bd8 (33...Kd7 34.Nf6 Ke7 35.Ng8 Kf8 36.Nh6+-) 34.Nd6 Kd7 (34...Kc7 35.Nf7 Bf6 36.Nh6+-) 35.Nf7 a6 (35...Bb6 36.Nh6 Ba5 37.Nf5+-) 36.Nh6 (better is 36.Nd8 ab5 37.ab5 Kd8+-) 36...ab5 37.ab5 b6 (37...Ke7 38.Nf5 Kf8 39.Ke6+-) 38.Nf5 Kc7 1–0. GuestCTYJ – GuestXTVJ, freechess.org, 2018.

7.Qe2 Qd5 8.Bf6 ef6 9.Nc3+=.

7.Qe2 Bg4 8.Qc4 (8.Bf6 ef6 9.Qc4 Bf3 10.gf3 f5+/–) 8...Bf3 9.gf3 Qd7 (9...e6 10.Rg1+=) 10.Rg1+/– 0-0-0 (10...c6 11.bc6 bc6 12.Be5+/–) 11.d3 (11.a4 Qh3 12.Bf6 ef6 13.Qg4 Qg4 14.fg4 h5+/–) 11...g6 (11...Kb8 12.Bd4+/–) 12.Nd2 (12.Be5 Bg7+/–) 12...Bg7 (12...Qd5 13.Qa4 Kb8 14.Bd4+-) 13.Qf7+- Rhg8 14.0-0-0 (14.Qc4 Qd6+-) 14...Rdf8 15.Qc4+- Nd5 16.Bg7 Rg7 17.Qd4 Rgf7 18.Ne4 Rf3 19.Qa7 Nb6 20.a4 Qd6 21.Nd6 ed6 22.a5 Nd5 23.Qa8 Kd7 24.Qb7 Nc3 25.Qc6 Kc8 26.b6 Ne2 27.Kb2 R3f7 28.a6 Ng1 29.b7 Kb8 30.a7! Ka7 31.Ra1 (31.Ra1 Kb8 32.Ra8) 1–0. b4_player – opponent, gamecolony.com, 2007.

8.0-0 h5 9.Ne5 Ng4 10.Nc4+/– a6 11.a4 ab5 12.ab5 c6 13.bc6 b5?? 14.Nca3 Qc7+/– 15.g3 f6?? 16.Nb5+- Qc6 17.Ra8 Qa8 18.Nc7 Kd7 19.Na8 g5 20.Qb5 Kd8 21.Bd4 Bd7 22.Qb8 Bc8 23.Bb6 Kd7 24.Qc7 Ke6 25.Qc8 Kf7 26.Nc7 h4 27.Qe6 Kg7 28.Ne8 Kg6 29.Qg4 hg3 30.fg3 (30...Kf7 31.Qd7+-) 1–0. Grits – boobur4, Live Game Caissa's Web, 2004.

8.Nc3 Nd5 9.Nd4 Nc3 10.Bc3 Bd5 (10...Qd7!?+=) 11.e4+- Be6 (better is 11...c5!? 12.bc6 Bc6 13.Nc6 bc6 14.Qc4 Qc8+-) 12.Ne6 fe6 13.Qh5 (better is 13.Be5+-) 13...g6?? (13...Kd7+-) 14.Qh3 Rg8 15.Qh7 Rg7 16.Bg7 Bg7 17.Qg7 Qd6 18.Qg8 Kd7 19.Qa8 Qd4 20.0-0 Qd2 21.Rad1 (21.Rad1 Qd6 22.e5+-) 1–0. pierre – oppomar, internet, 2010.

8.Nc3 Qd6 9.0-0+=.

8.Nc3 g6 9.Ne5 (9.Ne4 Bg7+=) 9...Bg7 (9...Qd6 10.f4= (10.Nc4? Qb4–+)) 10.Nc4+= 0-0 (10...a6 11.ba6 Ra6 12.0-0+=) 11.d4 (11.e4 h6+=) 11...a6 12.a4 Nd5 (12...Re8 13.0-0+/–) 13.0-0+/– Nb4 14.Rac1 (14.Rfc1 h6+/–) 14...ab5 (14...c5 15.bc6 Nc6 16.Rfd1+/–) 15.ab5+/– b6 (15...c5 16.dc5 Bc3 17.Bc3+=) 16.Rfd1 Qc8 (16...Re8 17.Ne5+/–) 17.Ba3 Nd5 18.Nd5 Bd5 19.Be7 Re8 20.Bg5 (20.Bb4 Qe6 21.Na3 Ra4+/–) 20...Ra4? (20...Qf5 21.f4=) 21.Ne5 f6= 22.c4 Bb7 23.Qc2 Ra8 24.Bf6= Bf6 25.f4 Be5 26.fe5 Qg4 27.Rd2 Be4 28.Qb3 Kg7 29.Rf1 h5 30.Qc3 Rf8 31.Rf8 Rf8 32.c5?? Bg2! (32...Bg2 33.Rf2 Bh3 34.Kh1 Rf2 35.cb6 Qg2) 0–1. pumpkin (2190) – demerick (2020), net–chess.com, 2005.

8.Nd4 Bd5 9.Nc3 Bg2 10.Rg1 Bh3 11.Qc4 e5 12.Nf3 Bd6 13.Rg7 Be6 14.Qh4 e4 15.Nd4 Qe7 16.Ne4 Ne4 17.Qe4 0-0-0 18.Ne6 fe6 19.Re7 1–0. thecat74 – mieris49p21, kurnik, 2012.

6.a4 e6 7.Be2 Bc5 8.0-0 0-0 9.d4 Bd6 10.Nbd2 Qc7 11.c4 dc4 12.Nc4 Nc4 13.Bc4 cb5 14.Bb5 a6 (14...Bd7 15.Bd3=) 15.Bd3+= b6 16.Qb3 Bb7 17.Rfc1 Qb8 18.Ne5 Be5 (18...Bd5!? 19.Qc2 Qb7=) 19.de5+/- Nd5 20.g3 (20.Bd4 Qd8+/-) 20...Qd8 (20...Rd8 21.Bd4+=) 21.Bd4 Qg5 (21...Rb8 22.Rd1+=) 22.Qb1+/- Qh5 23.Be4 (23.e4 Qf3 24.ed5 Qd5 25.Bh7 Kh8+/-) 23...Qh3 (23...Rab8!?=) 24.Bg2 (24.Bb6 f5 25.Bg2+-) 24...Qh5 (better 24...Qg2!? 25.Kg2 Nc3 26.f3 Nb1 27.Rab1 b5 28.ab5 ab5 29.Rb5 Ra2 30.Bb2 Ba6+/-) 25.e4+- Ne7 26.Qb6 Rab8 27.Qc7 (27.Rab1 Ng6 28.Bc5 Rfe8+-) 27...Ng6 (27...Nc6 28.Rc6 Bc6 29.Qc6 Rfd8+-) 28.Ba7 Rbc8 (28...Ra8 29.Qb7 Ne5 30.Qa6 Nf3 31.Bf3 Qf3 32.Qb7+-) 29.Qb7 Rc1 30.Rc1 Qe5 (30...Ne5 31.Qa6 h6 32.Qd6+-) 31.Rc8 Qa1 (31...h6 32.Rf8 Nf8 33.Qc8+-) 32.Bf1 Ne5 (32...h6 33.Rf8 Nf8+-) 33.Rf8 Kf8 34.Bc5 Ke8 (34...Kg8 35.Qc8) 35.Qc8 (35.Qe7) 1-0. ClayPigeons (2115) - Yasinking (2035), Rated Bullet game, lichess.org, 2019.

6.a4 e6 7.Be2 Bd6 8.0-0 0-0 9.d4 Nc4 10.Bc4 dc4 11.Nbd2 cb5 12.ab5 b6 (better is 12...Bd7!? 13.Nc4 Bb5 14.Nd6 Bf1 15.Qf1 Qd6+=) 13.Nc4+/– Bc7 14.Ncd2 Bb7 15.c4 Ne4 16.Qc2 Nd2 17.Qd2 e5 (17...Bf3 18.gf3 Qg5 19.Kh1 Qh5=) 18.Qc3?? (better is 18.de5 Qe8 19.Qe2+-) 18...Bf3= 19.gf3 Qg5 20.Kh1 Qh5 21.de5 Qf3 22.Kg1 Rfe8 23.e6 Qg4 24.Kh1 f6 25.Rg1 Qe4 26.Rg2 Re6 27.Kg1 Be5=+ 28.Qb3 Bb2 29.Qb2 Qc4 30.Rc1 Qd5 31.Qb1 Re5 32.Rc7 Rg5 33.Rg5 Qg5 34.Kh1 Rd8 35.e4 Qf4–/+ 36.Rc3 Qf2 37.Qb3 Kh8 38.Rc1 h6 39.Rg1 Qe2 (39...Qe2 40.Qg3 Qe4 41.Qg2 Qg2 42.Kg2 Rd5–+) 0–1. Van Esbroeck,Dirk – Allwardt,David, SN–2009–0-00164, 2009.

6.a4 e6 7.Be2 Bd6 8.Ba3 Ba3 9.Na3 0-0 10.Ne5 (10.0-0 c5=) 10...Nd7 11.Nf3 (11.Nd7 Bd7 12.0-0 e5=) 11...h6 (11...e5 12.0-0=+) 12.0-0 (12.d4 Re8+=) 12...Nc5 (12...e5 13.d4=) 13.c3 (13.c4 cb5 14.ab5 Ncb3+=) 13...Ne4 14.Bd3 (14.Qc2 Qd6+=) 14...Ng5 (14...c5 15.Qc2 Ng5 16.Ne5=) 15.c4 (15.Ne5!?+=) 15...dc4 (15...Nf3 16.Qf3 Nb3 17.Rad1=+) 16.Bc4= Nc4 17.Nc4 cb5 (17...Bd7 18.Rb1=) 18.ab5+= Qf6 (18...Bd7 19.Nd4+=) 19.b6 (19.Nfe5 Rd8+/–) 19...a6 (19...Nf3 20.Qf3 Qf3 21.gf3+=) 20.Nce5 (20.Ng5!? Qg5 21.Ra5+=) 20...Nf3= 21.Nf3 Rd8 (21...Bd7 22.d3=) 22.d4+= Bd7 23.Qb3 (23.Ne5 Bb5 24.Re1 Rd6=) 23...Rac8 (23...Bb5 24.Rfc1=) 24.Rfc1 Bc6 25.Ne5 Bb5 (25...Bd5 26.Qb2=) 26.Rc7 Rb8? (better is 26...Rc7 27.bc7 Rc8+=) 27.Rf7+- Qg5?? 28.Qe6 Kh8 29.Rc1 Re8 30.Qh3 Kh7 31.f4 Bd7 32.Nd7 Qg6 33.Nf6 Kh8 34.Ne8 Qf7 35.Nd6 Qf6 36.Rc8 Rc8 37.Qc8 Kh7 38.Qf5 (38.Qf5 Qf5 39.Nf5+-) 1–0. wlittle (2295) – vgomdysey (2160), net–chess.com, 2003.

6.a4 e6 7.Be2 Bd6 8.Nd4 0-0 (8...e5 9.Nf3 Qc7 10.bc6 Nc6 11.Na3+=) 9.0-0 (9.Nf3 Bd7=) 9...c5 (9...e5 10.Nf3 Re8 11.d4+=) 10.Nf3= Nd7 11.d3 Nb6 (11...e5 12.c4 d4 13.Qc2=) 12.Nbd2 Qc7 13.c4 f5 (13...Rd8 14.Bc3 Nd7 15.Qc2+=) 14.Qc2 Nd7 15.Qc3 Nf6 16.h3 (16.Ne5 Rd8+=) 16...b6 17.Ne5 Nb7 (17...Bb7 18.Rfd1=) 18.Ndf3 (18.Rfd1 a6+=) 18...Nd8 (18...a6 19.d4+=) 19.d4 (19.a5 ba5 20.Qa5 Qe7+/–) 19...Ne4+= 20.Qd3 (20.Qe1 Nf7+=) 20...Nf7 (better is 20...Bb7=) 21.dc5?? (21.cd5 ed5 22.dc5 Nc5=) 21...Bc5?? (better is 21...Be5 22.Ne5 Ne5 23.Be5 Qe5–+) 22.Bd4 (22.cd5 Rd8 23.Nf7 Qf7 24.de6 Be6+/–) 22...Bd6 (better is 22...Bb7+=) 23.Rac1?? (better is 23.Nf7 Qf7 24.cd5 ed5 25.a5 ba5 26.Ra5+/–) 23...Ne5–+ (23...Be5?! 24.cd5 Qd6 25.Rc6 Qd5 26.Be5 Ne5 27.Qd5 Nf3 28.gf3 ed5 29.fe4 fe4 30.Kg2+=) 24.Ne5 Be5 25.cd5 Qb8 26.Be5 Qe5 27.Bf3 (better is 27.de6 Be6 28.Qd4 Qd4 29.ed4–+) 27...ed5 28.Rfd1 Be6 29.Rc6 Rad8 (29...Rac8 30.Qd4 Qd4 31.ed4–+ (31.Rd4?? Rc6 32.bc6 Rc8–+)) 30.Rdc1 (30.Qd4 Qd4 31.Rd4 Bf7–+) 30...Nc5 (30...Bd7 31.R6c2–+) 31.Qa3 (31.Qd4 Qb8–+) 31...d4 32.Qa1 (32.ed4 Rd4 33.Qe3 Qe3 34.fe3 Rc4 35.Rc4 Bc4–+) 32...Qf6 (32...Nb3 33.ed4 Qf6 34.Re6 Qe6 35.Re1–+) 33.Rc7 (33.Rd1 de3 34.fe3 Rd1 35.Qd1 Rd8–+) 33...d3 (better is 33...Nb3 34.Qb2 Nc1 35.Qc1–+) 34.Ra7 d2 35.Rb1 Qa1 36.Ra1 Bb3 (better is 36...Rf7 37.Rf7 Kf7 38.Bh5 Kf6 39.Bd1–+) 37.Bd1 (37.a5 ba5 38.R1a5 d1Q 39.Bd1 Rd1 (39...Bd1?! 40.b6 Ne4 41.b7–+) 40.Kh2 Ne4–+) 37...Rd3 (better is 37...Bd1!? 38.Rd1 Rf7 39.Ra6–+) 38.Be2 (38.Bb3 Rb3 39.Rd1–+) 38...Rc3 39.Rc7 (39.Kh2 Ne4 40.Rd7–+) 39...Rc1 40.Rc1 (40.Kh2 Ra1 41.a5 Ra5–+) 40...dc1Q (40...dc1Q 41.Kh2 Qd2 42.Rc5 bc5–+) 0–1. Goldmund,Heike – Gonet,Gerard, FICGS, 2016.

6.a4 Bf5 7.d3 e6 8.Be2 Bb4 9.Nbd2 0-0 10.0-0 a6 11.Nh4 Re8 (11...ab5 12.Nf5 ef5 13.ab5 cb5 14.Nf3=) 12.Nf5 ef5 13.Bf3 (13.Rb1 Bf8+=) 13...g6 (13...ab5!? 14.ab5 cb5=) 14.Rb1+= ab5?? (better 14...Bd6+=) 15.Bf6+- Qf6 16.Rb4 ba4 (16...Qc3 17.Rf4 ba4 18.Ra4+-) 17.Ra4 b5 18.Ra2 Qc3 19.g3 Re7 (19...g5+-) 20.Nb3 Rea7 (20...Kg7 21.Qe1 Qe1 22.Re1+-) 21.Qa1 Qb4 22.Rb1 Nb3 (22...Qd6 23.Na5 Qc7 24.Bd5 cd5 25.Rb5 Qd7+-) 23.Ra7 Na1 (23...Ra7 24.Qa7 Qd2 25.cb3+-) 24.Ra8 (24.Rb4 Ra7 25.Rb2 Ra4=+) 24...Kg7 25.Rb4 Nc2 26.Rb2 (26.Rb2 Ne1 27.Be2+-) 1–0. DEFFM – GuestMHGX, freechess.org, 2019.

6.Bd3 Nc4 7.Bc4+= dc4 8.bc6 bc6 9.a4 (9.Qe2 Bg4+=) 9...Nd5 (9...Rb8 10.Bd4 a6 11.Qe2+=) 10.0-0 Ba6 (10...Bg4 11.e4 Qb8 12.Bc1+= (worse is 12.ed5 Qb2 13.Nc3 cd5+=)) 11.Re1 Qa5 12.Ne5 Bb7 (12...e6 13.e4 (13.Nc6? Qb6–+) 13...Nf6 14.Na3+/– (worse is 14.Nc6 Qb6–/+)) 13.Qf3 (13.Qh5 g6 14.Qg4 Nf6 15.Qc4 Qd5+/–) 13...Nf6+/– 14.Na3 (14.e4 Qa6+/–) 14...Qd2 15.Red1 (worse is 15.Nc6 Qd6 16.Bf6 gf6–/+ (worse is 16...Qf6 17.Qf6 ef6 18.Na5 Ba3 19.Ra3+/–)) 15...Qb4 16.Nb5! Qa5?? (16...cb5 17.Qb7 Double attack (17.Qb7 Pinning; 17.Qb7 Deflection; 17.Qb7 Decoy)) 17.Nc4 cb5 (17...Qd8 18.Rd8 Rd8 19.Na7 Nd7+-) 18.Qb7 (18.Na5?! Bf3 19.gf3 b4=) 18...Qd8 19.Bf6 gf6 (19...Qd1 20.Rd1 Rd8 21.Qb5 Rd7 22.Qd7) 20.Qb5 (20.Qb5 Qd7 21.Qd7) 1–0. pcmvr – jonsnow, net–chess.com, 2018.

6.Bd3 Bg4 7.h3 Bd7 8.bc6 Nc6 9.Bf6 ef6 10.0-0=.

6.Na3 Ba3 7.Ba3= Nc4 8.Bc4 dc4 9.0-0 h5 (9...Bd7 10.Qb1=) 10.Qb1 b6 (10...a6 11.ba6 b6 12.Qb5 Nd7 13.Qc6 (worse 13.Qc4 Ba6 14.Qb3 Bf1 15.Rf1 Nf6=+) 13...Ba6 14.Bb2+=) 11.Ne5 Qd5 (11...a6!?+=) 12.Qb4+- Do you see the mate threat? 12...Bb7?? (better 12...Qd8+-) 13.Qe7 1–0. GuestLYRF – GuestRHMB, freechess.org, 2020.

6.Na3 Bd6 7.Ne5=+.

6.a4 a6 7.Be2 b6 8.0-0 ab5 9.ab5 Bb7 10.Ne5 Bd6 11.f4 Be5 (11...0-0 12.Bd4=) 12.fe5+= Ne4 13.d3 Ng5 (better 13...Nc5!?+/-) 14.h4+- d4 15.e4 Nc4 (better 15...Ne4 16.de4 Qh4 17.Qd4 Rd8+-) 16.Ra8 (16.hg5 Nb2 17.Ra8 Ba8=) 16...Ne3 (16...Ba8 17.dc4 Ne4+-) 17.Rd8 (17.hg5?! Qa8 18.Qe1 Nf1 19.Bd4 Qa2 20.Kf1 Qc2+-) 17…Kd8 1-0. DEFFM – Guestmdlue, freechess.org, 2021.

6.d3 a6 A) 7.a4 A1) 7...Bd7 8.c4 Bd6 9.Be2 0-0 10.0-0 c5 11.Na3 Qe7 12.Bc3 ab5 13.Nb5=; A2) 7...Bb4 8.Nbd2 (8.Bc3 Bc3 9.Nc3 c5 10.d4 cd4 11.Qd4 ab5 12.Bb5 Bd7 13.0-0=) 8...0-0 9.Be2 Qe7 10.0-0 Bd7 11.Qb1 Ng4 12.c4 Rfd8 13.h3=; A3) 7...c5 8.Be2 (8.Be5 Bd6 9.Be2 Be5 10.Ne5 d4 11.c3 0-0 12.0-0 Qd6 13.cd4=+; 8.Na3 Bd6 9.Be2 0-0 10.0-0 Re8 11.Be5 Be5 12.Ne5 Nd7 13.Nd7=) 8...Bd6 9.0-0 0-0 10.c4 b6 11.Nbd2 Bb7 12.Qc2 Qe7 13.Bc3=; A4) 7...Bd6 8.Be2 c6 9.0-0 0-0 10.Na3 Qe7 11.Ne5 Nd7 12.d4 Nb6 13.bc6=; B) 7.ba6 B1) 7...b6 8.Nbd2 (8.Nc3 Ba6 9.Be2 Bd6 10.0-0 e5 11.a4 c6 12.Ba3 Ba3 13.Ra3=+; 8.Be2 Bd6 9.0-0 0-0 10.Qd2 Ba6 11.Ne5 Bb7 12.f4 Bc5 13.Bd4=; 8.Ne5 Ba6 9.Be2 Bc5 10.0-0 0-0 11.Nd2 Bb7 12.Ndf3 Nc6 13.Nc6=; 8.Be5 Bd6 9.Be2 Ba6 10.0-0 Be5 11.Ne5 Qd6 12.Nf3 0-0 13.Nc3=+) 8...Ba6 9.Be2 Bd6 10.e4 Bf4 11.e5 Nd7 12.Nb3 Bb7 13.Bc3=; B2) 7...Ra6 8.Be2 (8.d4 Rb6 9.Bc3 Nc6 10.Nbd2 Ba3 11.Bd3 0-0 12.0-0 Nb4 13.Bb4=; 8.Nbd2 Bb4 9.Be2 0-0 10.0-0 Nc6 11.c4 Bd7 12.a3 Be7 13.Qb3=; 8.Nc3 Bd7 9.e4 Bc6 10.e5 Nd7 11.Be2 Be7 12.0-0 0-0 13.Re1=; 8.Be5 Nc6 9.d4 Ra5 10.Bd3 Ne5 11.Ne5 Bd6 12.0-0 c5 13.Qf3=+) 8...Bd6 9.e4 Bf4 10.e5 Nd7 11.0-0 c5 12.d4 Ra8 13.dc5=; B3) 7...ba6 8.Nbd2 (8.Nc3 Bd6 9.Rb1 e5 10.Be2 Rb8 11.d4 e4 12.Ne5 0-0 13.0-0=+; 8.Be2 Rb8 9.Bc3 c5 10.0-0 Nc6 11.Re1 Bd6 12.e4 de4 13.de4–/+; 8.Bc3 c5 9.Nbd2 Nc6 10.Be2 Rb8 11.Nb3 Bd6 12.0-0 0-0 13.Rb1=+; 8.Be5 Nc6 9.Bf4 Rb8 10.d4 Ne4 11.c3 g5 12.Bg3 h5 13.Bd3=+) 8...Rb8 9.Rb1 Bd6 10.e4 Bf4 11.g3 Bh6 12.e5 Nd7 13.d4=.

6.d3 c5 7.c4 A) 7...Be7 8.Nbd2 (8.Na3 0-0 9.Be2 Bd6 10.Qa4 a6 11.0-0 b6 12.Qc2 d4 13.ba6=; 8.cd5 ed5 9.Be2 Qb6 10.Qa4 Bd7 11.Bc3 Bd8 12.Na3 a6 13.Rb1=) 8...0-0 9.Be2 a6 10.ba6 Ra6 11.0-0 Bd7 12.Rb1 Bc6 13.Qc2=; B) 7...dc4 8.dc4 Qd1 9.Kd1 Be7 10.Bd3 a6 11.Na3 0-0 12.Ke2 Rd8 13.Rhd1=; C) 7...Bd6 8.Be2 (8.e4 Bf4 9.ed5 0-0 10.de6 Be6 11.Be2 Re8 12.0-0 Bg4 13.Nc3+=) 8...a6 9.Nc3 0-0 10.0-0 dc4 11.dc4 e5 12.Qc2 Be6 13.Rfd1+=; D) 7...a6 8.ba6 (8.Na3 Bd6 9.Rb1 0-0 10.Be2 d4 11.0-0 e5 12.ba6 Ra6 13.Nb5=) 8...Ra6 9.Nbd2 dc4 10.dc4 Be7 11.Be2 Nc6 12.0-0 0-0 13.Nb3=.

6.d3 c5 7.Be2 Bd7 (7...a6 8.a4 (8.Na3 Bd6 9.0-0 0-0 10.Rb1 Bd7 11.c4 ab5 12.Nb5 Bb5 13.cb5=; 8.ba6 ba6 9.0-0 Bd6 10.Na3 0-0 11.Rb1 Rb8 12.Qd2 Nc6 13.c4=) 8...Bd6 9.0-0 0-0 10.c4 b6 11.Nbd2 Bb7 12.Bc3 ab5 13.ab5=; 7...Bd6 8.c4 (8.0-0 0-0 9.Be5 Be5 10.Ne5 Nd7 11.Nd7 Bd7 12.d4 c4 13.Nc3=; 8.Na3 d4 9.0-0 0-0 10.c3 de3 11.fe3 e5 12.c4 Re8 13.Bc3=) 8...a6 9.Nc3 0-0 10.0-0 Qe7 11.e4 d4 12.e5 dc3 13.Bc3=; 7...Qd7 8.a4 Bd6 9.Bc3 Qd8 10.0-0 0-0 11.Qd2 b6 12.Ne5 a6 13.f4=) 8.a4 (8.c4 a6 9.ba6 Ra6 10.Ne5 Bd6 11.Nd7 Nd7 12.cd5 ed5 13.Bf3=) 8...b6 (8...a6 9.c4 Bd6 10.0-0 0-0 11.Nbd2 b6 12.Bc3 dc4 13.dc4=) 9.Ne5 (9.0-0 a6 10.c4 Bd6 11.e4 de4 12.de4 Ne4 13.Qd3=) 9...Be7 (9...Bd6 10.c4 0-0 11.Nd7 Nd7 12.cd5 ed5 13.Bf3=) 10.Nd2 (10.c4 0-0 11.0-0 Qc7 12.Bc3 dc4 13.dc4+=) 10...0-0 (10...a6 11.c4 0-0 12.0-0 Qc7 13.Qc2=) 11.Bf3 (11.0-0 a6= 12.c4 Qc7 13.Bc3=) 11...Bd6 (11...Bc8 12.c4= (12.0-0 Qc7 13.Be2=) 12...Bb7 13.0-0=) 12.c4+= Rc8 (12...Bc8 13.cd5 ed5 14.Ndc4 Nc4 15.Nc4=) 13.Nd7 (13.Qc2+=) 13...Qd7 14.Bf6 gf6 15.cd5 Qc7 (better 15...ed5!? 16.Rc1 Be5+=) 16.Nc4+- Kh8 (16...Be5 17.Ra3+-) 17.Na5 ba5 18.de6 fe6 19.Bc6 Rg8 20.Qf3 Qg7 (better 20...f5+-) 21.Be4?? (better 21.Rc1+-) 21...f5–/+ 22.Bf5?? (better 22.0-0 Qe5 23.g3 fe4 24.de4–+) 22...Qa1–+ (22...ef5?! 23.0-0–/+) 23.Kd2 (23.Qd1 Qd1 24.Kd1 ef5–+) 23...Qb2 (23...Qh1 24.Be4 Rgf8 25.Qe2–+) 24.Kd1 (24.Ke1 ef5 25.g3 Qc3 26.Kf1 Qd3 27.Kg2 Qc2–+) 24...ef5 25.Re1 (25.Ke1 c4 26.g3 Qc1 27.Qd1 cd3 28.Qc1 Rc1 29.Kd2 Rh1 30.h3 Bb4 31.Kd3 Rd8 32.Ke2 Rd2 33.Kf3–+) 25...c4 26.Qf5 cd3 (26...cd3 27.Qc8 Rc8 28.b6 Rc1; 26...c3 27.Qf6 Rg7 28.Qg7 Kg7 29.b6 Qd2) 0–1. Chorazy,Andre – Ribeiro,Pascale, 12th Open, St Affrique FRA, 2004.

6.d3 c5 7.Be5 A) 7...Bd6 8.Be2 (8.Qd2 Be5 9.Ne5 0-0 10.Be2 Nd7 11.d4 Ne5 12.de5 a6 13.ba6=+; 8.d4 0-0 9.Be2 a6 10.Nc3 cd4 11.Qd4 Be7 12.0-0 ab5 13.Nb5=; 8.c3 a6 9.ba6 Ra6 10.Be2 0-0 11.Bd6 Qd6 12.Nbd2 Nc6 13.0-0=+; 8.Bd6 Qd6 9.d4 c4 10.Nc3 Bd7 11.Rb1 0-0 12.Ne5 a6 13.b6=) 8...Be5 9.Ne5 Nd7 10.Nf3 0-0 11.d4 cd4 12.Qd4 a6 13.0-0=; B) 7...Qb6 8.c4 (8.Bf6 gf6 9.c4 dc4 10.dc4 Bd7 11.Bd3 Bg7 12.Qc2 f5 13.Nc3=; 8.a4 Bd6 9.Be2 Be5 10.Ne5 d4 11.0-0 Qd6 12.Nf3 0-0 13.ed4=) 8...Be7 9.Be2 0-0 10.Nc3 dc4 11.dc4 Nd7 12.Na4 Qd8 13.Bc3=; C) 7...Be7 8.Be2 a6 9.a4 0-0 10.0-0 b6 11.c4 Nd7 12.Bc3 Bf6 13.cd5=; D) 7...a6 8.a4 (8.d4 c4 9.ba6 Ra6 10.Be2 Nc6 11.0-0 Ne5 12.de5 Ne4 13.c3=+; 8.ba6 ba6 9.c3 Nc6 10.Bg3 Bd6 11.Qa4 Qd7 12.Bd6 Qd6 13.Nbd2=+; 8.Nc3 Ng4 9.ba6 Ra6 10.Bg3 Nc6 11.Be2 d4 12.ed4 Qa5 13.Qd2–/+) 8...Bd6 9.Be2 Be5 10.Ne5 Nd7 11.Nd7 Bd7 12.d4 Nc4 13.Bc4=.

6.d3 Bd6 7.Be5 A) 7...0-0 8.d4 (8.Qd2 Be5 9.Ne5 c6 10.a4 Qc7 11.Qc3 Rd8 12.Nd2 Nd7 13.Nd7=; 8.Be2 a6 9.ba6 b6 10.0-0 Be5 11.Ne5 Qd6 12.d4 Ba6 13.Nc3=; 8.Bd6 cd6 9.Nbd2 Bd7 10.d4 Nc4 11.Nc4 dc4 12.Bc4 Bb5 13.Bb5=; 8.Nbd2 Be5 9.Ne5 Nd7 10.d4 Ne5 11.de5 c5 12.Qh5 c4 13.Be2=) 8...Ne4 9.Bd6 Qd6 10.Bd3 Qb4 11.Nbd2 Nc3 12.Qc1 Bd7 13.a4=; B) 7...Bd7 8.c4 (8.Qd2 Be5 9.Ne5 c6 10.a4 0-0 11.d4 Ne4 12.Qb4 b6 13.Bd3=; 8.Nc3 a6 9.ba6 Ra6 10.Rb1 0-0 11.d4 Ra7 12.Bd3 Be7 13.0-0=; 8.a4 a6 9.Bd6 cd6 10.ba6 ba6 11.Be2 0-0 12.0-0 Qc7 13.Ra3=+) 8...Be5 9.Ne5 a6 10.ba6 Ra6 11.cd5 ed5 12.d4 Rb6 13.Nc3=; C) 7...a6 8.d4 (8.ba6 b6 9.Be2 Ba6 10.0-0 0-0 11.Nbd2 Nc6 12.Bd6 Qd6 13.c4=+) 8...0-0 9.Nbd2 Bb4 10.Rb1 Bc3 11.ba6 b6 12.a3 Ne4 13.Bd3=+.

6.Bd3 Bd6 7.0-0=.

6.Bd3 Be7 7.Nc3 (7.Ne5 a6=) 7...c5 8.0-0 (8.Ne5 Qd6 9.f4 c4=) 8...c4 (8...Bd6 9.Nb1=) 9.Be2 0-0 10.d4 (10.d3 Qb6=) 10...h6 (10...a6 11.a4=) 11.Ne5 Nh7 (11...Bd6 12.a4=) 12.e4 (12.a4=) 12...f5 (12...Nf6!?=) 13.ed5 (13.Ng6 Re8 14.Ne7 Qe7 15.ed5 ed5+/–) 13...ed5 14.Ng6 Rf6?? (better is 14...Re8+/–) 15.Ne7+- Qe7 16.Nd5 Qf7 17.Nf6 Qf6 18.Bc3 b6 19.Ba5 ba5 20.Bc4 Be6 21.Be6 Qe6 22.Re1 Qf6 23.c4 Ng5 24.c5 Rf8 25.c6 f4 26.Qb3 Kh8 27.h4 f3 28.hg5 Qg5 29.g3 Qh5 30.Qe6 Rf5 31.c7 Qh3 32.c8Q Kh7 33.Qcg8# 1–0. pierre – oppotaa, internet, 2010.

6.Be2 Nc4 7.Bc3 Bd7 8.a4 a6 9.d3 Nd6 10.Na3 (10.ba6 Ra6 11.0-0 Ra4 12.Ra4 Ba4=) 10...ab5 11.ab5 (11.Nb5 Bb5 12.ab5 Nb5=+) 11...Nf5–/+ 12.d4?? (better 12.Qc1–/+) 12...Ra3 (12...Ba3 13.0-0–+) 13.Ra3 Ba3 14.0-0 0–1. Fournier,Frederic (1865) – LORDMACLAUD (1810), Active, 2005.

6.Be2 Bd6 7.0-0 0-0 8.d3 Bd7 (8...a6 9.a4=) 9.a4 a6 10.c4 ab5 (10...c5 11.Na3=) 11.ab5 c6 12.Nc3 (12.Na3 Qe7=) 12...cb5 (12...Qc7 13.cd5 cd5 14.Ra4=) 13.Nb5 Bb5 14.cb5 Qb6 (14...Qe7 15.Qb1=) 15.Qa4+= Nc4?? (better is 15...Rfc8+=) 16.Qa8+- Ra8 (16...Ne3 17.Rfb1 Ng2 18.Kg2 Ra8 19.Ra8 Bf8+-) 17.Ra8 Bf8 18.dc4 h6 (18...Qd6 19.cd5 ed5 20.Rc1+-) 19.Ba3 Nd7 (19...Nh7 20.cd5 ed5 21.Rc1+-) 20.Ne5! Qc7 (20...Ne5 21.Bf8 Deflection) 21.Nd7 Qd7 22.Rf8 Kh7 23.cd5 ed5 (23...Qd5 24.Rf7 Kg6+-) 24.Bd3 g6 25.Bb2 (25.Bb2 f6 26.Bf6+-) 1–0. GuestTHHB – GuestTFVR, freechess.org, 2018.

6.Be2 Bd6 7.a4 0-0 8.Na3 Re8 9.c4 e5 10.cd5 Nd5 11.Nc4 Nc4 12.Bc4 Nb6 13.Be2 e4 14.Nd4 Be5 (14...Qg5 15.g3+=) 15.Qc2= Bd6 16.0-0 Qg5 17.f4 ef3 18.Rf3 Bg4 19.Rf2 Be2 20.Ne2 a6 21.Nd4 Qh5 22.g3 Qd5 (22...Be5 23.a5 Nd7 24.Qc4=) 23.Raf1 (23.Nf5!? f6 24.Bd4=) 23...f6+= 24.Nf5 ab5 (24...Qc4!? 25.Qc4 Nc4=) 25.Ng7+= Kg7 26.Rf6 Re5 27.Be5 Be5 28.R6f5 Qc4 29.Qd1 Bb2 30.Qh5 (30.d3!? Qc6 (30...Qa4 31.Qh5 Bf6 32.Rf6 Qh4 33.Rf7 Kg8 34.gh4 h6 35.Qg6 Kh8 36.Qg7) 31.Qg4 Qg6+-) 30...Kh8+/– 31.ab5 Bg7 32.Rf7 Qd5 33.Qd5 Nd5 34.R1f5 Rd8 35.e4 Nf6 36.e5 Ne8 37.Re7 Kg8 38.g4 (38.d4 Bf8 39.Rg5 Kh8+-) 38...Bf8+/– 39.Ref7 (39.Rg5 Kh8 40.Rf7 Bc5 41.Kf1+-) 39...Bc5 40.Kf1 Ng7 (40...Rd2? 41.e6 Bb4 42.Rg5 Kh8 43.e7 Rd1 44.Kg2 Rd2 45.Kf3+-) 41.Rf3 Ne6 42.R7f6 Nd4 43.Rc3 b6 44.Rd3 Re8 45.Rf4 Nb5 (worse is 45...Re5 46.Rdd4 Bd4 47.Rd4 Rb5 48.Rd8 Kf7 49.Rd7 Kg6 50.Rc7 Rb1 51.Kf2+/–) 46.Rf5 Nd4 47.Rf4 ½–½. purplegadge (1775) – af120 (1815), gameknot.com, 2014.

6.Be2 Bd7 7.Bc3 Nc4 8.a4 Ne4 (8...a6 9.ba6 Ra6 10.a5=) 9.Bd4 Bb4 (9...Ncd6 10.d3 Ng5 11.Ne5+=) 10.0-0 (10.c3 Bd6 11.d3 e5 12.de4 de4 13.Bc4 ef3 14.Qf3 0-0 15.Qb7 ed4 16.cd4 Bb4 17.Nd2 a6+-) 10...0-0 (better is 10...Nf6!?+/–) 11.d3+- Nc3? (better is 11...e5 12.de4 ed4 13.ed5 Nb6 14.Qd4 Be7+-) 12.Nc3 (12.Bc3 Bc3 13.Nc3 Nd6+-) 12...Nd6 1–0. DEFFM – GuestVBRC, freechess.org, 2018.

6.Be2 Be7 7.0-0 0-0 8.a3 a6 (8...Bd6 9.Bc3 c6 10.a4 a6 11.Be5 b6; 8...b6 9.Ne5 a6 10.a4 Nd7 11.Nd7 Qd7; 8...c6 9.a4 Bd7 10.Ne5 Qc7 11.Na3 Rfc8; 8...c5 9.Nc3 Bd6 10.Na4 Nd7 11.d4 c4) 9.a4 Bd6 10.Na3 b6 11.d3 Qe7.

6.Be2 Be7 7.0-0 0-0 8.a4 a6 9.Ne5 Nd7 10.d3 Ne5 11.Be5 c5.

6.Be2 Be7 7.0-0 0-0 8.a4 c5 9.Na3 Bd6 10.d3 Re8 11.c4 e5.

6.Be2 Be7 7.0-0 0-0 8.a4 c6 9.d3 Bd7 10.c4 b6 11.Nc3 Bd6 12.d4 (better 12.e4!? Qb8 13.Nd5 Nd5 14.ed5 ed5 15.Bc3=) 12...dc4 13.bc6 (13.Ne5!?=+) 13...Bc6–/+ 14.Qc2 Qc7 (14...Rc8 15.Rad1–/+) 15.h3 (15.Nb5!? Bb5 16.ab5=+) 15...Qb7 16.Nb5 Be4 (16...Be7 17.Nc3–/+) 17.Qc1?? (better 17.Nd6 Bc2 18.Nb7 Nb7 19.Bc4=) 17...Rfd8 18.Bc4?? (better 18.Nd6 Rd6 19.Qc3–/+) 18...Rac8 (18...Bf3!? 19.gf3 Rac8 20.Nd6 Rd6 21.e4 Nc4 22.e5 Ne5 23.Qc8 Qc8 24.de5–+) 19.Nd6 Rd6 20.Nd2 (20.Ba3 Rdc6 21.Ne5 Rc4 22.Nc4 Rc4 23.Qd1 Bg2 24.Re1–+) 20...Bd3 (20...Bg2 21.d5 Bh3 22.Bf6 ed5 23.Be5 dc4 24.f3 Rg6 25.Kh2 Bf1 26.Qf1–+) 21.Re1?? (better 21.Bd3 Rc1 22.Rfc1=+) 21...Nc4–+ (21...Rc4?! 22.Nc4 Nc4 23.Rd1 Nb2 24.Qb2–+) 22.Nc4 Rc4 23.Qd2 Bg6 (23...Be4 24.Ba3 Rd5 25.f3 Bf3 26.gf3 Rg5 27.Kf2–+) 24.Ba3 (24.Rec1 Rdc6–+) 24...Rdc6 25.Rec1 (25.a5 Ne4 26.Qb2 Rc2–+) 25...Ne4 (25...Ra4 26.Rc6 Qc6 27.Rc1–+) 26.Qe2 Rc1 27.Rc1 Rc1 28.Kh2 (28.Bc1 Qc6 29.Qd1–+) 28...Rc8 (28...Qc7 29.g3 Ng3 30.Qg4 Nf1 31.Kg2 Ne3 32.Kf3 Qc6 33.d5 Qd5 34.Kg3 Rg1 35.Kh4 Qd8 36.Be7 Qe7 37.Qg5 Qg5) 29.f3 (29.Kg1 Qc6 30.a5 Qa4–+) 29...Nc3 (29...Rc3 30.Bb4 Qc7 31.f4–+) 30.Qb2 (30.Qe1 Qc7 31.Qg3 Qg3 32.Kg3 Nd1–+) 30...Na4 31.Qb4 (31.Qb5 Nc3 32.Qg5 Qc7 33.f4 Nd5–+) 31...Qc6 32.e4 Nc3 (32...Nc3 33.Qb2 Qc4–+) 0–1. retiponziani (1830) – Geo. (1950), ChessWorld.net, 2011.

6.Be2 Be7 7.0-0 0-0 8.a4 Bd6 9.Be5 a6 10.d4 Ne4 11.Bd6 Qd6.

6.Be2 Be7 7.0-0 0-0 8.a4 Bd7 9.Ne5 c5 10.d3 a6 11.c4 Qc7.

6.Be2 Be7 7.0-0 0-0 8.d3 a6 (8...c6 9.c4 a6 10.bc6 Nc6 11.cd5 Nd5; 8...c5 9.c4 a6 10.Na3 ab5 11.Nb5 Nc6; 8...Bd7 9.c4 c6 10.a4 a6 11.Nc3 cb5) 9.a4 c6 10.Na3 Bd7 11.c4 cb5.

6.Be2 Be7 7.0-0 0-0 8.Be5 a6 (8...Nd7 9.Bf4 a6 10.Nc3 Nc4 11.a4 ab5; 8...Bd7 9.Nc3 Ne4 10.d3 Nd6 11.Rb1 f6) 9.ba6 b6 10.d4 Ba6 11.Ba6 Ra6.

6.Be2 Be7 7.0-0 0-0 8.Ne5 Nd7 (8...a6 9.a4 Nd7 10.d3 Ne5 11.Be5 c5; 8...c5 9.d3 a6 10.a4 Nd7 11.Nd7 Qd7; 8...c6 9.a4 Nd7 10.f4 a6 11.Bc3 f6; 8...Ne8 9.Bd3 c6 10.a4 Qd6 11.f4 c5) 9.Nd7 Bd7 10.Bd3 c6 11.a4 f5.

6.Be2 Be7 7.0-0 a6 A) 8.Nc3 ab5 (8...0-0 9.ba6 b6 10.d3 Ba6 11.Qd2 c5) 9.Bb5 c6 10.Bd3 0-0 11.Qe2 b5; B) 8.ba6 b6 9.d3 Ba6 10.Bc3 0-0 11.Nbd2 Bb7; C) 8.Na3 0-0 (8...c6 9.bc6 Nc6 10.c4 0-0 11.Rc1 e5; 8...b6 9.d3 Ba3 10.Ba3 ab5 11.Qb1 c6) 9.ba6 b6 10.a7 c6 11.d3 Ra7; D) 8.Ne5 ab5 (8...0-0 9.a4 Nd7 10.d3 Ne5 11.Be5 c5) 9.Bb5 c6 10.Bd3 0-0 11.Qf3 Bd6.

6.Be2 Be7 7.Nc3 A) 7...Bd6 A1) 8.d3 e5 (8...c5 9.bc6 Nc6 10.0-0 e5 11.Nb5 Bg4; 8...c6 9.0-0 0-0 10.Rb1 e5 11.bc6 Nc6) 9.Qd2 c6 10.Nb1 Qc7 11.Bc3 b6; A2) 8.a3 0-0 (8...e5 9.d3 0-0 10.Rb1 Re8 11.0-0 Qe7) 9.d3 e5 10.0-0 Re8 11.Qd2 c5; A3) 8.Rb1 0-0 (8...e5 9.0-0 0-0 10.d3 Re8 11.Re1 c5) 9.d3 e5 10.Na4 Re8 11.Bc3 a6; A4) 8.a4 e5 (8...0-0 9.d4 Qe7 10.0-0 Rd8 11.Ne5 Nd7; 8...Qe7 9.0-0 e5 10.d3 0-0 11.Rb1 Rd8) 9.0-0 0-0 10.Rb1 Re8 11.d3 Bg4; A5) 8.0-0 e5 (8...0-0 9.d4 a6 10.a4 c6 11.Ba3 Ba3) 9.d4 e4 10.Ne5 0-0 11.Qd2 c6; B) 7...0-0 B1) 8.d3 Qd6 (8...c5 9.0-0 a6 10.ba6 ba6 11.Rb1 Nc6; 8...a6 9.ba6 Ra6 10.0-0 Nc6 11.d4 Ra8; 8...c6 9.0-0 Bd7 10.a4 Qc7 11.bc6 Nc6; 8...Bd7 9.0-0 c6 10.a4 Qc7 11.bc6 Nc6) 9.0-0 a6 10.a4 c5 11.Qd2 Qc7; B2) 8.a3 Qd6 (8...Bd6 9.d3 e5 10.0-0 Re8 11.Qd2 c5; 8...a6 9.ba6 b6 10.0-0 Ba6 11.Ba6 Ra6) 9.d3 a6 10.ba6 ba6 11.Na2 Nc6; B3) 8.0-0 Bd6 (8...Qd6 9.Nb1 a6 10.Be5 Qd7 11.a4 Nc4; 8...a6 9.ba6 b6 10.a7 c6 11.Rb1 Bd6; 8...c5 9.bc6 Nc6 10.Nb5 a6 11.Nbd4 Bd7) 9.d3 e5 10.Na4 Re8 11.c4 dc4.

6.Be2 Be7 7.d3 Qd7 (7...c6 A) 8.Nc3 cb5 (8...0-0 9.a4 Qc7 10.bc6 Nc6 11.Nb5 Qa5; 8...Bd7 9.a4 Qc7 10.0-0 0-0 11.bc6 Nc6; 8...Bd6 9.bc6 Nc6 10.0-0 e5 11.Nb5 Bg4; 8...Qc7 9.0-0 e5 10.Rb1 Bd6 11.bc6 bc6) 9.Nb5 Bd7 10.a4 a6 11.Nbd4 Qc7; B) 8.a4= a6 (8...0-0 9.Bc3 c5 10.0-0 a6 11.Qd2 b6; 8...Bd7 9.Bc3 b6 10.Ba5 ba5 11.bc6 Bc6) 9.0-0 cb5 10.ab5 ab5 11.e4 0-0; 7...a6 A) 8.ba6 Ra6 (8...b6 9.0-0 0-0 10.Nc3 c6 11.Rb1 Ra6; 8...b5 9.a4 b4 10.0-0 0-0 11.c3 c5; 8...ba6 9.Nbd2 Rb8 10.Rb1 0-0 11.0-0 Bb7) 9.0-0 0-0 10.Nbd2 Nc6 11.c4 dc4; B) 8.a4 Bd7 (8...0-0 9.0-0 b6 10.Ne5 Bb7 11.Nd2 c6; 8...c6 9.0-0 ab5 10.ab5 cb5 11.Be5 0-0; 8...c5 9.0-0 0-0 10.c4 dc4 11.dc4 b6; 8...Bd6 9.0-0 0-0 10.c4 c6 11.Nbd2 b6) 9.c4 0-0 10.0-0 c6 11.Nc3 cb5; 7...Bd7 A) 8.a4 a6 (8...c6 9.Bc3 b6 10.Na3 a6 11.0-0 0-0; 8...Bb4 9.Bc3 Bc3 10.Nc3 c5 11.0-0 Qc7) 9.c4 0-0 10.0-0 c6 11.Nc3 cb5; B) 8.Qd2 b6 (8...c5 9.c4 a6 10.ba6 Ra6 11.0-0 0-0) 9.Nc3 a6 10.ba6 0-0 11.0-0 Ra6) 8.a4+= (8.Nc3 0-0 (8...a6 9.ba6 Ra6 10.Ne5 Qd8 11.d4 Ra8; 8...c6 9.a4 Bd6 10.Qd2 Qc7 11.0-0 e5; 8...Bd6 9.e4 Bb4 10.a3 Bc3 11.Bc3 Qb5) 9.0-0 c6 10.a4 Bd6 11.bc6 bc6) 8...c5 (8...a6 9.Ne5 Qd6 10.d4 Qb6 11.Ba3 Ba3; 8...Bb4 9.Nbd2 a6 10.0-0 0-0 11.Bf6 gf6) 9.0-0 b6 (9...0-0 10.Bc3 b6 11.Qd2 a6) 10.c4 (10.Ne5 Qd6 11.c4 0-0) 10...0-0 11.Bc3 Bb7 12.Ba5 ba5 13.Nbd2 Qc7 14.Qb3 (14.Rb1 Bd6=) 14...h6 (14...Qb6 15.cd5 ed5 16.Rab1=) 15.cd5 ed5 16.Rfc1 Nd7 17.Rab1 Qb6 18.Qa3 (18.Qc2 Rab8+=) 18...Rfe8= 19.Qa2 Rac8 20.Ne1 (20.Nb3 a6=) 20...Ne5 (20...Rc7 21.Bf3 Nf6 22.Nb3=) 21.Nef3 Ng6 (21...Nd7 22.Qc2=) 22.Rc2 (22.Nb3 d4 23.Nbd2 Bf3 24.Nf3 Bd6=) 22...Qd6 (22...Bf6 23.Qa3=) 23.Nb3+= Qb6 24.Nbd2 Bf6 25.Nb3 Nf8 ½–½. Sutton – Jenneborg,Seved, email 4AMM–09, 1997.

6.Be2 Be7 7.Be5 A) 7...Bd7 A1) 8.a4 0-0 (8...c6 9.Nc3 0-0 10.0-0 c5 11.d4 c4; 8...a6 9.0-0 0-0 10.Nc3 c5 11.d4 c4) 9.0-0 c5 10.Nc3 Qb6 11.d4 Rfc8; A2) 8.Nc3 c6 (8...0-0 9.0-0 Ne4 10.d3 Nd6 11.Rb1 f6; 8...c5 9.0-0 0-0 10.a4 Qb6 11.Rc1 Rfd8; 8...Ba3 9.0-0 0-0 10.Rb1 Bd6 11.d4 Be7) 9.a4 0-0 10.0-0 c5 11.d4 c4; B) 7...a6 B1) 8.ba6 b6 (8...ba6 9.Bc3 c5 10.0-0 0-0 11.d4 cd4) 9.Nc3 Ba6 10.Ba6 Ra6 11.Nb5 Bd6; B2) 8.Nc3 b6 (8...0-0 9.ba6 b6 10.Nb5 Ne8 11.a7 f6; 8...c6 9.a4 b6 10.0-0 0-0 11.Rb1 ab5) 9.0-0 0-0 10.a4 c5 11.d4 Nd7; C) 7...0-0 C1) 8.Nc3 Ne4 (8...Nd7 9.Bg3 Bf6 10.d4 c5 11.bc6 Nc6; 8...c6 9.a4 Nh5 10.h3 Bd7 11.0-0 Nf6; 8...a6 9.ba6 b6 10.Nb5 Ne8 11.a7 f6; 8...Ng4 9.Bg3 c5 10.0-0 Nf6 11.Be5 Nd7) 9.d3 Nd6 10.0-0 f6 11.Bd6 Qd6; C2) 8.a4 Nd7 (8...Ng4 9.Bc3 c5 10.0-0 Qc7 11.h3 Nf6; 8...c5 9.0-0 Nd7 10.Bg3 Bf6 11.d4 Qb6; 8...Ne4 9.d3 Nf6 10.0-0 c5 11.c4 Bd6) 9.Bc3 c5 10.0-0 a6 11.d4 c4; C3) 8.0-0 a6 (8...Nd7 9.Bc3 c5 10.d4 a6 11.ba6 ba6; 8...c6 9.a4 Nd7 10.Bf4 c5 11.d4 a6; 8...Bd7 9.Nc3 Ne4 10.d3 Nd6 11.Rb1 f6) 9.Nc3 ab5 10.Nb5 c6 11.Bc7 Qe8.

6.Be5 Bd6 7.Nc3 a6 8.a4 Nc4 (8...0-0!?=) 9.Bc4+- dc4 10.Qe2 c6? (better 10...Be5!? 11.Ne5 ab5 12.Nb5 0-0 13.Qc4 c6+-) 11.bc6+- bc6 12.Qc4 Qd7 13.Rb1 Nd5 (13...0-0 14.Rb6+-) 14.Bd6 Qd6 15.Ne4 Qd7 (15...Qc7 16.Qc5 f6 17.h4+-) 16.Ne5 (better 16.Qc5 Qa7 17.Nd6 (worse 17.Qc6 Bd7 18.Qd6 Qc7+-) 17...Kd8 18.Qa3+-) 16...Qa7 (16...Qc7 17.Qc5 Qe5 18.Nd6 Kd7 19.Nf7 Qf6 20.Qd6 Ke8 21.Nh8 Ne7+-) 17.Nd6 Ke7 (17...Kf8 18.Qc6 g6 19.Nc8+-) 18.Nc6 Kd6 19.Na7 Ra7 20.e4 Nc7 (20...Rc7 21.Qd3 Rd8+-) 21.Qd4 (21.Qd4 Nd5 22.Qa7+-) 1–0. Silent Move (2115) – johnb1941 (1895), redhotpawn.com, 2015.

6.Bc3 Nc4 7.Bc4 dc4 8.Qe2=.

6.Nc3 e5 7.h3 Bf3 8.Qf3 e4 (8...Qd6 9.Be2=) 9.Qf5 Bb4 (9...Qd6 10.d3 g6 11.Qf4 Qf4 12.ef4+=) 10.a3+= Bc3 (10...Be7 11.d3 ed3 12.Bd3+=) 11.Bc3+/– b6 (11...c5 12.Rd1+/–) 12.Qe5 (12.Rd1 Qd6+/–) 12...Qe7 13.Qg3 Rg8 14.Bb4 Qd7 15.Qe5 Kd8 16.Qc3 (16.Ba5!? ba5 17.Qc3+/–) 16...Nb7= 17.Be2 Nd6 18.Qb3 h5 (18...Kc8 19.a4+=) 19.a4 (19.d3 Kc8+=) 19...c5 20.bc6 Qc6 21.a5 Nb5?? (21...ba5 22.Ra5 Nc4+-) 22.Bb5+- Qb5 23.Be7!! Ke8 24.Qb5 (24.Qb5 Ke7 25.Qb4 Kd7 26.c4+-) 1–0. Wall,Bill – RomanianGepsy, chess.com, 2010.

6.Nc3 Bh5 7.d3=.

6.d3 c6 7.a4 e6 8.Be2 Bd6 9.0-0 Qc7 10.h3 Bh5 11.Nbd2 (11.g4 Bg6 12.g5=) 11...a6 (11...0-0 12.Re1=) 12.c4 (12.g4 Bg6 13.g5 Nd7 14.Bg7 Rg8+=) 12...dc4 13.dc4 Rd8 14.Nd4 Be2 (14...Bg6 15.ba6 ba6 16.Bc3=) 15.Qe2 c5 (15...0-0 16.N4f3+=) 16.N4f3+/– ab5 (16...0-0 17.Bc3+/–) 17.ab5 b6 18.e4 Bf4 (18...e5 19.Rfd1+/–) 19.Rfd1 0-0 20.g3 (20.e5 Nh5+/–) 20...Bd2 21.Nd2 Rd2 22.Rd2 Nb3 23.Rad1 Nd2 24.Rd2 Ra8 25.Qe3 Ne8 26.Qd3 Nf6 27.Qe3 Ne8 28.Qd3 Nf6 29.Qe3 ½–½. Djurisic,Dusan (1900) – Reljic,Dragan, Beograd SER, City Team Ch, 2014.

6.d3 c6 7.bc6 Nc6 8.Bf6 ef6 9.Be2=.

6.d3 Qd6 7.h3 (7.Bc3!? b6 8.h3 Bf3 9.Qf3=) 7...Bf3+= 8.Qf3 Qb4 9.Bc3 Qb5 10.d4 Qb6 (10...Qa4 11.Bd3+=) 11.Bd3 0-0-0 (11...c5 12.dc5 Qc5 13.Bd4+=) 12.0-0 (12.Nd2 c6=) 12...e6 (12...Nc4 13.Nd2 Na3 14.e4=) 13.a3 g6?? (better is 13...Nc4+=) 14.Nd2 (better is 14.Qf6 Bd6 15.Nd2 c5+-) 14...Nc6?? (14...Ne4 15.Rab1 Nc3 16.Rb6 ab6 17.Qf7 e5 18.Qe6 Kb8 19.Qe5 Ba3+-) 15.Rab1 Bb4 (15...Qb1 16.Rb1 Be7 17.Bb5+-) 16.Bb4 (worse is 16.ab4 Nd7+-) 16...Nb4 (16...Ne4 17.Bc3! Nc3 18.Rb6 ab6 19.Qf7+-) 17.Rb4 Qa5 18.Rfb1 (18.Qf6 Qa3 19.Rfb1 b6+-) 18...b6 (18...Nd7 19.Nc4 Qa6 20.Nb6 Qb6 21.Rb6 Nb6 22.Qf7+-) 19.a4 (19.Qf6 Qa3 20.Qf7 Rd6+-) 19...Kd7 (19...Ne4 20.Ne4 de4 21.Be4 Rhf8+-) 20.Nb3 (better is 20.Qf6 Rhf8 21.c3+-) 20...Qb4 21.Nc5! bc5 22.Rb4 cb4 23.Qf6 1–0. GuestVSRS – GuestWGFZ, freechess.org, 2017.

6.d3 e6 7.Nbd2 Bb4 8.c3 Be7 9.Be2 c6 10.bc6 Nc6 11.0-0 0-0 12.h3 Bf3 13.Nf3 Qb6 14.Qb3 Qb3 15.ab3 a5 16.Ba3 Ba3 17.Ra3 b5 18.Rfa1 b4? (better is 18...Rfc8!?+=) 19.cb4+/– Nb4 20.Ra5 Ra5 21.Ra5 Rb8 22.Nd4 e5 23.Nf3 e4 24.de4 Ne4 25.Nd4 Nd2 26.Bf3 Nf3 27.Nf3 f6 28.Nd4 Kf7 29.Kf1 1–0. Fournier,Frederic (1960) – toto293 (1850), Active (5/0), 2004.

6.Be2 e5 7.0-0 e4= 8.Nd4 (8.Ne5 Be2 9.Qe2 Bd6=) 8...Be2 9.Qe2 Nc4 10.Bc3 Bc5 (10...Bd6 11.d3 Ne5 12.Nf5=) 11.f3 Bd4 (11...0-0!?=) 12.Bd4+/– ef3 (12...Nd6 13.Nc3+/–) 13.Qf3 Ne4?? (13...Qd6 14.Qf5+/–) 14.Qe2 (14.Qf7) 14...0-0? (better is 14...c5 15.bc6 bc6+/–) 15.d3+- c5 (15...Ncd6 16.de4 Ne4 17.Qg4+-) 16.bc6 (16.dc4?! cd4 17.ed4 Re8+=) 16...bc6 17.de4 (17.dc4?! c5 18.Bb2 Qb6+-) 17...Qe8 (17...Re8 18.Nc3 f6 19.Rab1+-) 18.Nd2 (better is 18.Qg4!? f6 19.Nc3 Kh8+-) 18...Nd2 19.Qd2 Qe4 20.Rf4 (20.Qc3 f6+-) 20...Qg6 (20...Qe6 21.Qc3 f6 22.Rb1+-) 21.Raf1 f6 (21...a6 22.c4!+-) 22.Qe2 (22.Qc3 Rac8+-) 22...h5 (22...Qf7 23.Qg4 Kh8 24.e4 de4 25.a4+-) 23.R4f3 (23.c4 dc4 24.Qc4 Qf7 25.Qc6 Qa2+-) 23...h4 (23...Qg4 24.Qd3 h4 25.Rh3+-) 24.Rf4 (24.Qd3 Qd3 25.cd3 Rac8+-) 24...Qg5 (24...h3 25.Rg4 Qh6 26.Rf3 hg2 27.Qg2+-) 25.Rg4 Qh5 (25...Qh6+-) 26.Rf6 (better is 26.Rg7! Kg7 27.Qh5 Rab8 28.Qg4 Kh8 29.Rf6 Rb1 30.Rf1 Rf6 31.Bf6 Kh7 32.Qg7) 26...Qh7 27.Rc6 h3 (27...Rab8 28.Qd1 Rf7+-) 28.Rg7 (28.Rg7 Qg7 29.Bg7+-) 1–0. GuestPRXR – GuestSNJS, freechess.org, 2016.

6.Be2 Bf3 7.Bf3 Nc4 8.Bc3 a6 9.ba6 Ra6 10.Be2 Rc6 11.Bc4 Rc4 12.0-0 e6 13.d3 Rg4 (13...Rc6 14.Bd4=+) 14.Nd2 (better is 14.Bf6 Qf6 15.Qg4 Qa1 16.Qa4 Kd8 17.c4+/–) 14...Bd6?? (better is 14...Ra4=) 15.Bf6+- Qf6 (15...Rg2 16.Kg2 Qf6 17.Rb1+-) 16.Qg4 0-0 17.f4 Ra8 18.d4 Qh6 19.Rf3 g6 20.Rh3 Qg7 21.Nf3 Ra3 22.Ng5 h6 23.Ne6! fe6 24.Qe6 Kh8 25.Qd5 b6 26.c4 Qd7 27.Rh6 Kg7 28.Qg5 Qf5 29.Qf5 gf5 30.Re6 Kf7 31.Rh6 Re3?? 32.Kf2 Bf4 33.Rh7 Kg6 34.Rd7 Rc3 35.g3 Be3 36.Ke2 c5 37.dc5 Bc5 38.a4 Rc4 39.Rc7 Rc2 40.Kd3 Rh2 41.a5 Rh3 42.a6 Rg3 43.Ke2 Rg2? 44.Kf3 Rf2 45.Kg3 Bd6 46.Kf2 Bc7 47.a7 b5 48.a8Q Bb6 49.Kf3 Kg5 50.Qg8 (50.Qg8 Kf6 51.Re1 Be3 52.Re3 f4 53.Re6 Kf5 54.Qg6) 1–0. Fournier,Frederic (1850) – homeopsi (1820), Active (5/0), 2005.

6.h3 Bf5 7.Bd4=.

6.h3 Bh5 7.Bc3 c5 8.Be2=.

6.h3 Bh5 7.d3 a6 8.g4 Bg6 9.g5=.

6.h3 Bh5 7.d3 e6 8.Bc3 c5=.

6.h3 Bh5 7.d3 e6 8.Be2 Bb4 9.Nc3 Bf3 10.Bf3 d4 11.ed4 Qd4=.

6.h3 Bh5 7.d3 e6 8.Be2 Bb4 9.Nbd2 0-0 10.a4 c5 11.c3 Bc3 12.Bc3 c4 13.dc4 Nc4 14.Nc4 dc4 15.Qd8 Rad8 16.Bf6 gf6 17.Bc4 Rc8 18.Be2 Rc2 19.Nd4 Rc5 20.Bh5 Rh5 21.0-0 e5 22.Nf3 Kh8 23.h4 Rg8 24.g3 e4 25.Nd2 Rh4 26.Rac1 Rh6 27.Rc7 Rg5 28.Ne4 Rgh5 29.Kg2 f5 30.Rd1 fe4 31.Rf7 Rh2 32.Kf1 Kg8 33.Rb7 Rf6 34.Rd8 Rf8 35.Rf8 Kf8 36.Ra7 Rh1 37.Ke2 h5 38.b6 Rb1 39.b7 Rb2 40.Kf1 Rb6 41.Ra8 Ke7 42.b8Q Rb8 43.Rb8 Kf6 44.Rb4 Ke5 45.Kg2 Kf5 46.a5 Ke5 47.a6 Kd5 48.a7 Kc5 49.Re4 Kd5 50.Rh4 Kc6 51.a8Q Kb6 52.Rh5 Kc7 53.Qd5 Kb6 54.Qe6 Kc7 55.Rh7 Kd8 56.Qg8 1–0. Abdullaevich – piporose, lichess.org, 2018.

6.h3 Bh5 7.d3 e6 8.Be2 Bb4 9.Nbd2 a6 10.ba6 Ra6 11.a3=.

6.h3 Bh5 7.d3 e6 8.Be2 Bb4 9.Nbd2 c6 10.a4 (10.Rb1 Qe7=) 10...a6 11.c3 (11.0-0 ab5 12.ab5 cb5=) 11...Bd6 12.c4 (12.0-0 ab5 13.ab5 cb5=) 12...ab5 (12...dc4 13.dc4 0-0 14.0-0=) 13.ab5 0-0 (13...cb5 14.cb5 0-0 15.0-0=) 14.0-0 Bc7 (14...cb5 15.cb5 Nd7 16.Nd4 Be2 17.Qe2=) 15.Qc2 (15.bc6 bc6 16.Qc2 Re8+=) 15...Bg6 (15...cb5 16.cb5 Bd6 17.Rfc1+=) 16.Nh4 (16.bc6 bc6 17.Ne5 Bh5 18.Bh5 Nh5+=) 16...Qd6 (16...dc4 17.Nc4 cb5 18.Na5=) 17.Ndf3+= Nc4? (better is 17...cb5 18.Ng6 fg6 19.cb5 Qd7+=) 18.Ng6+- Nb2? (18...Ne3 19.fe3 fg6+-) 19.Nf8 Rf8 (19...Qf8 20.Qb2 c5 21.b6 Ra1 22.Ra1+- (22.bc7?! Rf1 23.Kf1 Qc8+-)) 20.Qb2 e5 21.e4! de4 22.de4 Ne4 23.Rfd1 Qc5 24.Bf1 (better is 24.Bd3!? Nf6 25.Rac1 Qe7+-) 24...Bb6 25.Ra2 (25.Qe5?! Qe5 26.Ne5 Nf2+-; 25.Ne5 Nf2 26.Kh2 Nd1 27.Rd1 Qg1 28.Kg3 Qe3 29.Kh2 Bc7–+) 25...Qe7 (25...cb5 A) 26.Ne5?! Nf2 27.Qf2 Qc7+/– (27...Qf2?? 28.Rf2 Bf2 29.Kf2+-); B) 26.Qe5?! Qe5 27.Ne5 Nc3+-; C) 26.Bb5? Nf2 27.Rc1 Qc1 28.Qc1 Nd3 29.Kf1 Nc1–+; D) 26.Qb5?! Qb5 27.Bb5 Nc3+/–; E) 26.Qb3+-) 26.Qe5 (better is 26.Qb3!? Re8+-) 26...Qe5 27.Ne5 Nc3 28.Rad2 Nd1 29.Rd1 Re8 (29...Bc7 30.Nf7! cb5 31.Bb5 Kf7 32.Rd7 Kf6 33.Rc7+-) 30.Nd7 (30.Nc4 Rd8 31.Rd8 Bd8+-) 30...Ba7 (30...Bc7+-) 31.b6 Bb8 32.Nb8 Rb8 33.Rd7 Kf8 (33...f6 34.Bc4 Kh8 35.Rc7+-) 34.Bc4 f6 (34...Kg8 35.Rf7 Kh8 36.Rc7+-) 35.Rf7 Ke8 1–0. DEFFM – GuestWLHH, freechess.org, 2016.

6.h3 Bh5 7.Be2=.

6.h3 Bh5 7.g4 Bg6=.

7.Bc3 Bd7 8.a4 c6 9.d3 Nd6 10.bc6 bc6 11.Ne5 e6 12.0-0 Be7 13.Nd2 g5 (13...0-0!?=) 14.Nb3 0-0 15.Qe1 a6 (15...Nf5!?+/–) 16.f4+- gf4 17.Rf4 (< 17.ef4 Be8+/–; 17.Nd7?! Nd7 18.Rf4 e5 19.Qg3 Kh8+=) 17...Nf5 18.Qf2 h5 (18...c5 19.e4 Ng7 20.Nc5+-) 19.Rf1 (19.e4 Ng7+-) 19...Bd6 20.e4 de4 21.de4 Qb8 22.ef5 Be5 23.Be5 Qe5 24.fe6 Ne4 25.Re4 Qe4 26.ef7 Kh7 27.Nc5 Qc2 28.Bd3 Qd3 29.Nd3 Be6 30.Ne5 c5 31.Qc2 Kh8 32.Qg6 Rf7 33.Rf7 Bd5 34.Qh7 (34.Qg7) 1–0. Fournier,Frederic (2215) – COMP Lchess, b2–b4.com, 2003.

7.Bc3 Bd7 8.a4 c6 9.d3 Nd6 10.bc6 bc6 11.Ne5 e6 12.0-0 Be7 13.f4 0-0 14.g4 h6 15.g5 Nfe8 16.gh6 gh6 17.Kh1 Ng7 18.Rg1 f6 19.Ng6 (19.Nd7?! Qd7 20.Nd2 Rab8+=) 19...Re8 20.Bh5 Bf8 21.Nf8 Rf8 22.Qg4 Ndf5 23.e4 de4 24.de4 c5 25.Nd2 Bc6+/– 26.Rg2 Kh8 27.Rag1 Qc7 28.Qe2 Nh5 29.Qh5 Qf4 30.Rf1 Qe3?? 31.Qg6 Qc3 32.Rf5 Qa1 33.Nf1 Qf1 34.Rf1 Rf7 35.Qh6 Rh7 36.Qf6 Rg7 37.Qg7 1–0. Fournier,Frederic (2080) – COMP LittleChessPartner 1.0.4, b2–b4.com, 2004.

7.Bc4 dc4 8.0-0 Qd5 9.Nc3 Qh5 10.Re1 e5 11.e4 Bc5 12.Nd5 Bf3 13.Qf3 Qf3 14.gf3 Nd5 15.ed5 f6 16.f4 0-0-0 17.fe5 Rd5 18.ef6 Rf5?? (better is 18...gf6 19.Re2 Bd6=+) 19.fg7+- Bf2 (19...Rg8 20.Re2+-) 20.Kh1 (better is 20.Kg2 Rg8 21.Rf1 Rb5 22.Rf2 Kd7+-) 20...Rg8 21.Rf1 Rb5 (21...Kd7+-) 22.Rf2 Rb2 (22...Kd7 23.Rf8 Rg7 24.Bg7 Rd5 25.Rf7 Kc6+-) 23.Rf8 Kd7 24.Rg8 Rc2 25.Rf8 Rd2 1–0. pulceria – fracastorio, kurnik, 2012.

7.Bf6 ef6 8.a4 Bb4 9.c3 Ba5 10.0-0 0-0 11.Na3 Nd6 12.Nc2 c5 13.Nce1 (13.bc6 bc6 14.Rb1 c5=) 13...g5 (13...Ne4 14.Nd3+=) 14.d4 Bc3 (14...c4 15.Ra3=) 15.dc5 (better is 15.Rc1!? Be1 16.dc5 Bf2 17.Kf2 Ne4 18.Kg1=) 15...Ba1+= 16.Qa1 Ne4 17.Nd3 Rc8 18.Rc1 a5 19.h3 Be6 20.Nd4 Qe7 21.c6 bc6 22.Rc6 Bd7= 23.Rc8 Rc8 24.Bg4 Bg4–+ 25.hg4 Rc3 26.Ne1 Qa3 27.Qa3 Ra3 28.Nec2 Ra4 29.f3 Nc3?? 30.b6= Ra2 31.Kh2?? Rb2–+ 32.Na3 a4 33.f4 Rb6 34.Nf5 Kf8 35.Nc2 Ne4 36.Nfd4 Ke7 37.f5 Kd6 38.Kg1 Rb1 39.Kh2 h6 40.g3 Nf2 41.Kg2 Ng4 42.Kf3 Ne5 43.Ke2 h5 44.Kd2 h4 45.gh4 gh4 46.e4 de4 47.Ke3 h3 48.Ke4 h2 49.Nf3 (49.Kf4 h1Q 50.Ke3 Qh3 51.Ke2 Qd3 52.Kf2 Ng4 53.Kg2 Rg1 54.Kg1 Qg3 55.Kf1 Qf2#) 0–1. orangutandu – tomporek47, kurnik, 2012.

7.Bf6 ef6 8.a4 Bb4 9.c3 Ba5 10.0-0 0-0 11.d4 Nd6 12.Qb3 Ne4 13.h3 Be6 14.Bd3 c6 15.Rc1 c5 16.c4 cd4 17.Nd4 Nc5 18.Qc2 (worse is 18.Ne6 Nb3 (18...fe6?! 19.Qc2=) 19.Nd8 Rad8–+ (19...Nc1?! 20.Nb7 Bb4 21.Bf1–/+; 19...Rfd8?! 20.Na3–+)) 18...Nd3 19.Qd3 (19.Ne6 fe6 20.Qd3 dc4 21.Qc4 Qd7=) 19...dc4+= 20.Qc2 (20.Qe2 Bd5+=) 20...Rc8–/+ 21.Nc3 Bd7 22.Rd1 a6 23.ba6 ba6 24.Nf3 Bb4 25.Nd5= Bd6 26.Rab1 Be6–/+ 27.Nb6 Rc6 28.a5 c3 29.Nd4= Rc5 30.Ne6 fe6+= 31.Rd3 Qc7–/+ 32.Kf1 g5 33.g3 Qc6 34.Kg1 h5 35.f4 Qf3 36.Qg2 Qg2–+ (36...Qg2 37.Kg2 Rd8–/+) 0–1. orangutandu – tomporek47, kurnik, 2012.

7.0-0 Bd6 8.a4 0-0 9.h4 (9.d3 c6=) 9...Bf3 (9...Ne4!?–/+) 10.Bf3=+ Nc4 11.Bc3 c6 12.d3 Ne5 13.g3 (13.Be2 Qb6=+) 13...Nf3–/+ 14.Qf3 cb5 (14...e5 15.Qf5 Re8 16.h5–/+) 15.ab5 (15.Bf6 Qf6 16.Qf6 gf6 17.ab5 a6=) 15...Qb6 (15...e5 16.g4 Ne8 17.Qd5 Qh4 A) 18.Qb7? e4 (18...Qg4 19.Qg2 Qg2 20.Kg2+=) 19.f4 Qg4 20.Kf2 Qf3 21.Ke1 Qe3 22.Kd1 ed3–+; B) worse 18.Be5 Qg4 19.Bg3 Bg3–/+; C) 18.Ra4=+) 16.Bf6= gf6 17.Qf6 Qb5 18.Nc3 (18.h5 Rfc8+=) 18...Qd7= 19.Ra4 The mate threat is Rg4 19...Be7?? (better 19...Rfc8=) 20.Rg4 1–0. DonSalvaje (1760) – deepcarlo (1645), ChessWorld.net, 2020.

7.d3 Bb4 8.c3 Bd6 9.0-0 0-0 10.Nbd2 Qd7 11.c4+= dc4 (11...a6 12.Bf6 gf6 13.ba6 Ra6 14.cd5 ed5 15.d4+=) 12.Qa4 b6 (12...cd3 13.Bd3 b6 14.Bf6 Bf3 15.Bh7 (15.gf3?! gf6 16.Bh7 Kg7 17.Qg4 Kh6+/–; 15.Nf3?! gf6 16.Qg4 Kh8+=) 15...Kh7 16.Qh4 Bh5 17.Qh5 Kg8 18.Qg5 g6 19.Qh6 Bh2 20.Qh2 Qd2 21.Qh8) 13.Nc4 Nc4 14.Bf6 gf6 15.Qc4 e5? (better is 15...f5!?+/–) 16.Ne5!+- Be5 (16...Be5 17.Qg4 Double attack (17.Bg4 Discovered attack); 16...fe5 17.Qg4 Double attack (17.Bg4 Discovered attack)) 17.Bg4 (17.Qg4?! Qg4 18.Bg4 Ba1 19.Ra1 a6=) 17...Qd6 (17...f5 18.Bf3 Ba1 19.Ba8 (19.Ra1?! Rad8+/–) 19...Ra8 20.Ra1+-) 18.d4 (better is 18.Bf5!? h5 19.Rac1 Bh2 20.Kh1 a6 21.ba6 Be5+-) 18...Bh2 19.Kh1 f5 20.Bh3 (worse is 20.Bf5 Qh6+-) 20...Be5? (20...a6 21.ba6 Kh8+-) 21.de5 Qe5 22.Rac1 Kh8 (22...a6 23.ba6 c5 24.Rfd1+-) 23.Rfd1 Rae8 (23...a6 24.ba6 c5 25.Rb1+-) 24.Rd5 Qb2 25.Bf5 Qf2 (25...Re7+-) 26.Qd4 f6 27.Rc7 Rg8 28.Rh7 1–0. Adlai – Arturo, corr, 2018.

7.d3 c6 8.a4 (8.Nc3 cb5 9.Nb5 Bb4 10.c3 Bc5=) 8...cb5 (8...Bb4 9.Nbd2=) 9.ab5 Bd6 (9...Bb4 10.c3 Bd6 11.Qa4=) 10.Nbd2 (10.Bc3 b6+=) 10...Qc7 11.0-0 0-0 (11...a6 12.ba6 Ra6 13.e4 Bf3 14.Nf3+=) 12.Bf6 (12.Ra4 a6 13.Bf6 Bf3 14.Nf3 gf6+-) 12...gf6 13.Ra4 Bh5 (13...f5 14.h3 Bf3 15.Bf3=) 14.Qa1 Rfc8 (better is 14...b6!?+=) 15.g4+- Qc2 16.gh5 (16.Ra2 Qc3 17.gh5 Bb4+-) 16...Nb3 17.Qf6?? (better is 17.Rg4 Kf8 18.Nb3 Qe2 19.Qf6+-) 17...Nd2 18.Rg4 Kf8 19.Ng5 Rc7 (19...Bh2 20.Kg2 Qc7 21.Ne6 Ke8 22.Nc7 Kd7 23.Na8 Rf8 24.Rg5 Kc8 25.Rd1 Nf1 26.Bf1 Kb8 27.Nb6 Bc7 28.Nd7 Kc8 29.Rc1 Kd7 30.Qf5 Kd8 31.Qd5 Kc8 32.Qd6 Kb8 33.Qf8 Bd8 34.Qd8) 20.Ne6 Ke8 21.Rg8 (21...Kd7 22.Qf7 Be7 23.Ra8+-) 1–0. Dagoberg,Mike – Jones,Robert, compuserve, 1995.

7.d3 Bd6 8.0-0 0-0 9.h3 Bf5 10.Nbd2 c6 11.bc6 Nc6 12.Nh4 Bg6 13.Ng6 fg6 14.f4 (better is 14.c4=) 14...Qb6–/+ 15.Bf6 Qe3 (15...Rf6?! 16.d4=+; 15...gf6?! 16.d4=+) 16.Kh1 Rf6 17.Rf3 Qb6 18.Rb1 Qc7 19.g3 Nd4 20.Rf1 e5 21.c3 (better is 21.Bf3 Qa5 22.fe5 Be5 23.Rb7 Nf3 24.Rf3 Qa2 25.Re3–/+) 21...Nf5 22.Qe1? ef4 23.gf4 Re8 24.Qf2 Re2! 0–1. Fournier,Frederic (2010) – Jakkos (1955), Active ajedrez21.com, 2005.

7.gf3 c6 8.Bd3 (8.bc6 Nc6 9.Bf6 ef6=) 8...c5 9.h4 c4 10.Be2 Qd7 11.a4 b6 (11...a6 12.Na3=) 12.Bd4 Qd6 13.f4 Ne4 (13...e6 14.Rg1=) 14.Nc3 Qg6 (14...Nc3!? 15.Bc3 e6=) 15.Nd5+/– 0-0-0 16.Nc3 Qg2 17.Rf1 Nc3 (17...Nd6 18.Bf3 Qg6 19.h5+/–) 18.Bc3+- Qh2?? (better is 18...Qd5+-) 19.Bf3 Qh4 20.Rh1 Qh1 21.Bh1 e6 22.f5! ef5 23.Qf3 Kd7 24.Qf5 Ke8 (24...Kc7 25.Qf7 Rd7 26.Qe8+-) 25.Bc6 Nc6 26.bc6 Bd6 27.Bg7 Rg8 28.Qe4 Be7 29.Bf6 Rg1 30.Ke2 Rd2 (30...Re1 31.Re1 Rd7 32.Rg1 Kf8 33.cd7 Bf6 34.Qe8) 31.Kd2 Ra1 (31...Rd1 32.Kd1 Kd8 33.Qe7 Kc8 34.Qd8) 32.Qe7 1–0. Gwda – Terezja, internet, 2017.

7.gf3 Qd7 8.Bc3 Nc4 9.Bc4 dc4 10.Na3 e6 11.Nc4 Nd5 12.Rb1 Nc3 13.dc3 Qd1 14.Kd1 0-0-0 (14...a6!?=) 15.Ke2+= g6 (better is 15...Be7!?+=) 16.Ne5+- Rd5 17.Nf7 Rg8 18.Rhd1 Rd1 (18...Rg7 19.Rd5 ed5 20.Ng5+-) 19.Rd1+- b6?? (better is 19...Be7+-) 20.Rd8 Kb7 21.Re8 c6 (21...e5 22.Nd8 Kc8 23.Ne6 Kb7 24.Rf8 Rf8 25.Nf8+-) 22.Nd8 Kc7 23.Ne6 Kd7 (23...Kd6 24.bc6 Kc6 25.Rf8 Rf8 26.Nf8+-) 24.Rf8 (24.Nf8?! Ke8 25.Nh7 Rh8=) 24...Rf8 25.Nf8 Kd6 26.bc6 Kc6 27.Nh7 1–0. Janek – Terry, internet, 2016.

7.gf3 e6 8.a4 Bc5 9.f4 b6 (9...Rg8 10.Be5=+) 10.Bg2 (10.Rg1 Rg8=) 10...0-0 11.d3 c6 12.0-0 (12.Nd2 a6=) 12...a6 13.bc6 Nc6 14.Nd2 d4?? (better 14...Rc8=+) 15.Bc6+- de3? (15...Rc8 16.Bb7 Rc7 17.Ba6 de3 18.fe3 Be3 19.Kh2 Nd5+-) 16.Ba8 Qa8 17.Bf6 ef2 18.Kh2 gf6 19.Ne4 Bd4 20.c3 Be3 (20...f5 21.cd4 fe4 22.Rf2 Kh8+-) 21.Qf3 Kh8 (21...Bd4 22.cd4 Kh8 23.Qf2+-) 22.Qe3 Rg8 23.Rf2 f5 (23...Qd8 24.Rb1 b5+-) 24.Qd4 Rg7 25.Rg1 Qf8 (25...Qg8 26.Rg7 Qg7 27.Qd8 Qg8 28.Qf6 Qg7 29.Rg2 Qf6 30.Nf6 e5 31.Rg8) 26.Qf6 Kg8 (26...a5 27.Rg7 Qg7 28.Rg2 Qf6 29.Nf6 b5 30.Rg8) 27.Rg7 Qg7 28.Qd8 Qf8 29.Rg2 (29.Rg2 Kh8 30.Qf8) 1-0. PEREIRA – Luismanuel, internet, 2021.

7.gf3 e6 8.Rg1+=.

7.Qf3 a6 8.ba6 ba6 9.Bf6 gf6 10.Nc3 e6 11.Rb1 Bd6 12.Bd3 Nc6 13.Qg4 Kf8 (13...Ne5 14.Qa4 Qd7 15.Bb5+=) 14.Qh5 (14.Qa4 Ne5 15.Ba6 Rg8+=) 14...Nb4 15.0-0 (15.g3 Nd3 16.cd3 Ke8=) 15...h6 (15...Ke8 16.Qe2=) 16.e4 d4 17.Ne2 c5 18.f4 Nd3 19.cd3 (19.Rb7 Rh7 20.cd3 Ke8+=) 19...Rb8 20.e5 Rb1 21.Rb1 fe5 22.fe5 Bb8 23.Nf4 Qc7? 24.Ne6 fe6 25.Rf1 Ke7 26.Rf7 Kd8 27.Qh4 Kc8 28.Rc7 Bc7 29.Qe7 Rd8 30.Qe6 Kb7 31.Qf7 Kc6 32.Qf6 Kb5 33.e6 Rb8 34.e7 Ba5 35.Qd6 Rh8 36.Qd7 Kb6 37.Qd8! Rd8 38.ed8Q Kb5 39.Qd7 Kb6 40.Qe6 Kb5 41.Qh6 Bb4 42.Kf2 a5 43.h4 a4 44.h5 Ba3 45.Qg5 Bc1 46.h6 Ba3 47.h7 Kb4 48.h8Q Bb2 49.Qhg8 Bc1 50.Qc4 Ka3 51.Qgc5 Kb2 52.Qc1 Ka2 53.Qd5# 1–0. fritz – loka, Blitz, 2008.

7.Qf3 c5 8.d3 a6 9.a4 ab5 10.ab5 e6 11.Nd2 Bd6 12.Be2 0-0 13.c4 dc4 14.dc4 e5 15.0-0 b6 16.Rfd1 h5 (better is 16...Qe7!?+/–) 17.Ne4+- Ne4 18.Qe4 Qc7 19.Bh5 Rad8 20.Rd5 f5 21.Qc2 Nb7 22.Bg6 f4 23.ef4 ef4? 24.Bh7 Kh8 25.Rh5 Rf7 26.Bg6 Kg8 27.Bf7 Qf7 28.Qh7 Kf8 29.Bg7! Ke8 30.Qe4 Qe7 31.Rh8 Kd7 32.Qb7 Ke6 33.Re1 Kf5 34.Qd5 Kg6 35.Qh5 Kg7 36.Rh7 Kf6 37.Rh6 Kg7 38.Qg6 Kf8 39.Rh8 1–0. Fournier,Frederic (2080) – COMP LittleChessPartner 1.0.4, b2–b4.com, 2004.

7.Qf3 c5 8.Be5 e6 9.Qf4 b6 10.Nc3 Be7 11.h4 Nb7 12.Qg3 g6 (12...0-0 13.Be2=) 13.Be2 d4 (13...Bd6!?+=) 14.Bf3 dc3 15.Bc6 (15.dc3!? Nh5 16.Bh5+-) 15...Kf8+= 16.0-0-0 cd2? (16...Na5 17.dc3 Qc8 (17...Nc6? 18.Rd8 Rd8 19.bc6+-) 18.Ba8 Qa8+/–) 17.Rd2+- Qc8 18.Qf3 g5?? (18...Na5 19.Bf6 Nc6 20.Bh8 Na5+-) 19.hg5 Ne8 (19...Nd5 20.Bh8 Nd8 21.Rh7 Kg8+-) 20.Bb7 (20.Bb7 Rg8 21.Rh7+-) 1–0. Mar Ram – Zelim Sunali, internet, 2010.

7.Qf3 Qd6 8.Ba3 Qb6 9.Nc3 e6?? (better is 9...0-0-0+=) 10.Na4+- Ba3 11.Nb6 ab6 12.Be2 c6 13.0-0 Bc5 (13...0-0 14.Rab1+-) 14.d4 Bb4 15.Rab1 c5 16.Qf4 0-0 17.Rb4! (17.Rb4 cb4 18.Bd3+-) 1–0. GuestRPGP – oleerikb, freechess.org, 2017.

8.Be2 Bb4 9.0-0 0-0 10.d3 c5?? 11.a3+- (11.a3 Ba3 12.Ra3+-) 1–0. b4_player – opponent, gamecolony.com, 2008.

8.Be2 Bb4 9.0-0 0-0 10.d3 c6 11.a4 cb5 12.ab5 Rc8 13.Bf6= Qf6 14.Qf6 gf6 15.c3 Nb3? (better is 15...Rc3!? 16.Nc3 Bc3+/–) 16.Ra7+- Bc3 17.Ra3 (< 17.Nc3 Rc3 18.Rb7 Nc1+/–) 17...Nd2 (17...Nc1 18.Rc1 (18.Nc3? Rc3 19.Rc1 Rc1 20.Bf1 Rd8–/+) 18...Bb4 19.Rc8 Rc8 20.Rb3+-) 18.Nc3 Nf1 19.Kf1 Rc7 20.Ke1 f5 21.Kd2 Kg7 22.d4 Kg6 23.Bd3 h5 24.Ra7 Rfc8 25.Na4 Kf6 26.Nc5 Rb8 27.b6 Re7 28.Bb5 Rd8 29.Nb7 Rb8 30.Bc6 Rc8 31.Na5 Rb8 32.b7 Rc7 33.Ra8 Rc6 34.Rb8 Rb6 35.Ra8 h4 36.b8Q Rb8 37.Rb8 Kg7 38.Nc6 Kh7 39.Rb7 Kg6 40.Ne5 Kg5 41.f4 Kh5 42.Rf7 Kh6 43.Rc7 Kh5 44.Rh7# 1–0. fritz – loka, Blitz, 2008.

8.Be2 Bb4 9.0-0 0-0 10.d3 c6 11.a4 Rc8 12.Ra2 cb5 (12...Qe7!?=) 13.ab5+= Be7 (13...b6 14.c3 Bd6 15.Nd2+=) 14.Qg3+/– Rc5 15.Na3 b6 (15...Rc8 16.Be5+=) 16.Bd4 (16.Rd1 Qd7+/–) 16...Rc8 17.c4 Nb3 18.Bb2 g6 (18...Qd7 19.cd5 Qd5 20.Nc4+/–) 19.Rd1 h6 (19...Nd7!?+/–) 20.Nc2+- Ra8 (20...Na5 21.Qf4+-) 21.e4! de4? 22.de4 Nd2 23.Qc3 Nde4 24.Rd8 Nc3 25.Rf8 Bf8 26.Bc3 Ne4 27.Bd4 Bc5 28.Bf3 f5 29.Bc5 bc5 30.Be4 fe4 31.Ra6 Kf7 32.b6 Kf6 33.Na1 g5 34.Nb3 Kf5 35.ba7 h5 36.Nc5 e5 37.Nd7 g4 38.Rf6 Kg5 39.h4! Kh4 40.Rg6 Rf8 41.Nf8 e3 42.Kh2 ef2 43.g3# 1–0. pierre – comp lokasoft, internet, 2009.

8.Be2 Bd6 9.0-0=.

8.Bf6 gf6 9.d4 Bb4 10.c3+= Bd6 11.Bd3 c6 12.Nd2 cb5 13.Bb5 Nc6 14.c4 a6 15.cd5 ed5 16.Bc6 bc6 17.Rc1 Rc8 18.0-0 h5 19.e4+- de4 20.Qe4 Kd7 21.Qf5 Ke8 22.Ne4 Be7? 23.d5! Rb8 24.d6! Bd6 25.Rfd1 Bh2 26.Kh2 Qc7 27.Kh1 Kf8 28.Qf6 Kg8 29.Rc6 Qb7 30.Rc5 Qe4 31.Rg5 Qg6 32.Rg6 fg6 33.Rd7 Rb1 34.Kh2 Rh1 35.Kh1 a5 36.Qd8 1–0. COMP – COMP, 2002.

8.Bf6 gf6 9.d4 c5 10.dc5 Bc5 11.Bd3 e5 12.e4 Bb4 13.c3 de4 14.Be4 Bd6 15.Nd2 Rb8 16.Nb3 a6 17.0-0 Nb3 18.ab3 ab5 19.Bb7 0-0 20.Be4 h6 21.Qg4 Kh8 22.Qf5 Kg8 23.Qh7# 1–0. COMP – COMP, 2002.

8.Bf6 Qf6 9.Qf6 gf6 10.g3 Bd6 11.d4 c5 12.bc6 Nc6 13.c4 Nb4 14.Kd2 0-0? 15.a3+- Nc6 16.cd5 Na5 17.Ra2 ed5 18.Bg2 Nc4 19.Kd3 b5 20.a4 a6 21.Bd5 Rab8 22.ab5 ab5 23.Bc4 bc4 24.Kc4 h5 25.Nd2 f5 26.Rha1 Rb4 27.Kd3 Kg7 28.Ra5 Kg6 29.Ra6 Rd8 30.Nc4 Rc4 31.Kc4 Kf6 32.Kd5 Ke7 33.Ra7 Kf8 34.Ra8 Bb8 35.Kc6 Ke8 36.Kb7 Bd6 37.Rd8 Kd8 38.Kc6 Bb4 39.Ra4 Be1 40.d5 Ke7 41.d6 Kf6 42.d7 Ke7 43.Kc7 f6 44.d8Q Kf7 45.Ra8 Kg6 46.Qg8 Kh6 47.Rf8 Ba5 48.Kd7 Bc3 49.Rf7 Bb2 50.Qg7 1–0. COMP – COMP, 2002.

6.Bc3 c5+=.

7.0-0 Rg8 8.Bd4 Nc4 9.Nc3 e6 10.Bc4+/– dc4 11.Qe2 Nd5 12.Qc4 Nc3 13.Bc3 Bc3 14.dc3 Bd7 15.Rfd1 Kf8?? 16.Ne5 Qe7 17.Rd7 Qf6 18.Qc7 Qe5 19.Rf7 Ke8 20.Qd7# (20.Qe7#) 1–0. pierre – oppojdz, internet, 2010.

8.a4 c6 9.d4 Nc4 (9...Bg4!?=) 10.Bc4+= dc4 11.bc6 Qb6 (11...bc6 12.Ne5+=) 12.cb7 (12.Nbd2 Qc6 13.Ne5 Qc7 14.Ndc4 Bf5+=) 12...Bb7 13.Ba3 Rfe8 (13...Qe6 14.Nc3+=) 14.Nc3 (14.Ne5 Qe6+=) 14...Rad8 (14...Qa5 15.Bb2+=) 15.Bc5 (15.Rb1!? Qa6 16.Qe2+/–) 15...Qa5= 16.Rb1 Bf3 17.gf3 Qc3? (better is 17...e5=) 18.Bb4+- Nd5 19.Bc3 Nc3 20.Qd2 Nb1 21.Rb1 e5 22.d5 e4 23.f4 c3 24.Qd1 Rd6 25.Rb5 g5? 26.fg5 h6 27.h4 f6?? 28.gh6 Bh6 29.Qh5 (29.Qh5 Red8 30.Rb7+-) 1–0. Wall,Bill – Defoe,Earl, Las Vegas, NV, 1987.

8.a4 c6 9.Be5 Bg4=.

8.a4 c6 9.Ne5 cb5 (9...Bf5 10.d3=) 10.ab5 b6 (10...Qc7 11.Bd4+=) 11.c4 (11.Bd4 Ne4+=) 11...dc4= 12.Nc4 Nc4 (12...a6 13.d4=) 13.Bc4 Bb7 (13...Bf5 14.Qb3+=) 14.d4 (14.Qe2 Qd6+=) 14...e6 (14...Qc7 15.Qe2+=) 15.Nc3 (15.Qe2 Qd7+=) 15...Rc8 (15...Qc7 16.Qe2+=) 16.Bb3 (16.Qe2 Rc7+=) 16...Ra8 (16...Rc7 17.Qd3+=) 17.h3 (17.Qe2 Qd7+=) 17...Nd5 (17...a5 18.Qd3=) 18.Nd5+= Bd5 19.Ba3 (19.Bd5 Qd5 20.Qe2 Rfc8+=) 19...Re8 20.Qd3 Qg5 (20...Bb3 21.Qb3 Qd7 22.Bb2+=) 21.Bd5 Qd5 22.Rfc1 e5 (22...Rec8 23.Rc8 Rc8 24.Bb2+=) 23.Bb2 ed4 (23...e4 24.Qe2+=) 24.Rc7 (24.Bd4 Bd4 25.ed4 Re4+=) 24...Qe4 (24...Qd8 25.Qc4 Re7 26.Raa7 Ra7 27.Rc8+=) 25.Qc4 (25.Qe4 Re4 26.Ra4 Be5+=) 25...de3?? (better is 25...Re7 26.Re7 Qe7 27.Bd4 Rd8+=) 26.Qf7 (26.Qf7 Kh8 27.Qg7#) 1–0. Wall,Bill – Nasdaq, internet, 2004.

8.a4 Bg4 9.d3 b6 10.Nbd2 c6 11.c4 cb5 (11...cb5 12.ab5 a6+=). bispo (2000) – wbame (1855), net–chess.com, 2011.

8.a4 Bg4 9.Bd4=.

8.Bd4 a6=.

6.Nc3 Bb4 7.Qh5 d4 8.Nd5 de3 9.fe3 Bd2 10.Kd2 c6 11.bc6 bc6 12.Bd3 cd5 13.Nf3 Qd6 14.Ke2 Be6 15.Rab1 Rc8 16.Rb5 Nc4 17.Rc1 Qa3 18.Ra1 a6 19.Rb7 Qc3 20.Rab1 Qa5 21.Rb8 Qa2 22.Nd4 g6 23.Qh6 Ke7 24.R1b7 Bd7 25.Nc6 Kd6 26.Nd4 Qa4 27.Rc8 Rc8 28.Qg7 Ke7 29.Kf2 Ne5 30.Rb6 Ng4 31.Kf3 Qa1 32.h3 Qd1 33.Be2 Qg1 34.hg4 Bg4 35.Kf4 g5 36.Kg3 Qe3 37.Kh2 Qd4 38.Bg4 Qb6 39.Bc8 Qc7 40.Kh1 Qc8 41.Qh7 Qc3 42.Kg1 Qe1 43.Kh2 Qh4 44.Qh4 gh4 45.Kh3 a5 46.Kh4 a4 47.Kg4 0–1. Comet B25 – Fritz 6, 2002.

6.Nc3 Bb4 7.Qh5 Be6 8.a3 Bc3 9.dc3 Qd6 10.Bd3 Qe5 11.Qe5 fe5 12.f4 ef4 13.ef4 0-0-0 14.Nf3 Nc4 15.0-0 Bg4 16.Ne5 Ne5 17.fe5 Rd7 18.Rf4 Be6 19.Rb1 h6 20.Rbb4 Re8 21.Rbd4 Rde7 22.a4 a5 23.ba6 c5 24.Bb5 cd4 25.a7 Kc7 26.Be8 Re8 27.g3 dc3 28.Rf3 Ra8 29.Rc3 Kb6 30.Rb3 Ka7 31.Rc3 Kb6 32.Ra3 d4 33.Kf2 Rc8 34.a5 Kb5 35.Ke2 Rc2 36.Kd3 Rh2 37.Kd4 Rh1 38.Ke3 Re1 39.Kd4 0–1. Comet B25 – Fritz 5.32, 2002.

6.c4 dc4 7.Qa4 b6 8.Bc4 Be6 9.Be6 fe6 10.Qe4 Bd6 11.Qe6 Qe7 12.Qe7 Be7 13.Nc3 Rd8 14.Nf3 f5 15.d4 0-0 16.0-0 f4 17.e4 Bb4 18.Nd5 Bd6 19.e5 (19.Rac1 Rd7+-) 19...Ba3?? (better is 19...Be5 20.Ne7 Kf7 21.de5 Ke7+/–) 20.Nc7+- Rf7 21.Ne6 Re8 22.Neg5 Rf5 23.Rab1 h6 24.Ne4 Bf8 25.Rfd1 g5 26.h3 h5 27.Nf6 Rf6 28.ef6 g4 29.hg4 hg4 30.Ne5 Re6 31.Ng4 Nc4 32.f3 Re2 33.a4 Ra2 34.Rbc1 Ne3 35.Ne3 fe3 36.Re1 Bh6 37.Rc3 e2 38.Rd3 Kf7 39.d5 Kf6 40.d6 Bg5 41.Kf2 Bh4 42.g3 Bg5 43.f4 Bh6 44.d7 Kf5 45.d8Q Ra4 46.Qd7 Ke4 47.Qd5# (47.Re2#) 1–0. typ48 – canii, kurnik, 2012.

6.d4 Be7 7.Nf3 0-0 8.Be2 Nc4 9.Bc4 dc4 10.c3 Bg4 11.Nbd2 c5 (11...a6 12.ba6 Ra6 13.Nc4=) 12.Nc4 cd4 13.ed4 (13.Qd4!? Be6 14.Qd8 Rfd8 15.Na5=) 13...Qc7= 14.Qd3 Rac8 15.Ncd2 Qc3 16.Qc3 Rc3 17.0-0 Rd3 18.h3 Bf3 (18...Be6 19.Rfc1=) 19.Nf3+= Bd6 20.Rfd1 Rd1 21.Rd1 Rc8 22.g3 Rc2 23.Ra1 Rb2 24.a4 Kf8 25.Kg2 Ke7 26.Re1 Kd7 27.Nh4 g6 28.Ra1 Rb4 29.Nf3 Kc7 30.h4 Kb6 31.h5 Ka5 32.hg6 fg6 33.Re1 Ka4 34.Re8? Kb5 35.Rh8 a5 36.Rh7 a4 37.Rb7–/+ Kc4 38.Ra7 Kb3 39.Ra6 a3 40.Nd2 Kc3 41.Ra3?? Kd2–+ 42.Ra6 Bf8 43.Rf6+= Bg7 44.Rg6 Bd4 45.Rd6 Ke2 46.Re6+/– Kd3 47.f4 Rb2 48.Kf3 Rf2 49.Kg4 Rc2 50.f5 Rf2 51.Kg5 Bc5 52.g4+= Kd4? 53.Re1 Kd5 54.Rd1 Kc6? 55.f6?? Be3+= 56.Kg6 Rf4 57.g5 Bc5?? 58.f7 Rf3?? 59.Kg7 Rf2 60.g6 Rf3 61.Rd8 Rf4 62.f8Q Bf8 63.Rf8 Kc7 64.Rf4 Kd6 65.Kh6 Kd5+- 66.g7 Ke5 ½–½. bluepiramid2 (1735) – barba50, kurnik, 2012.

6.Nf3 Bg4 7.Be2 Nc4 8.h3 Bh5 9.d3 Na5 10.a4 Qd6 11.0-0 Be7 12.c4 dc4 13.dc4 Qd1 14.Rd1 (< 14.Bd1 Nc4 15.Nh4 Bd1 16.Rd1 Bd6=+) 14...Nb3 15.Ra2 0-0 16.Nbd2 Nc5 17.Kf1 Rad8 18.Nd4 Be2 19.Ke2 Ne4?? (19...Rd7 20.a5+=) 20.Rc2 Bb4?? 21.f3 Nc3 22.Ke1? Nd1–+ 23.Kd1 c5?? 24.N4b3?? Rfe8 25.Ke2 f5 26.Kf2 a5 27.e4 fe4 28.Ne4 Rd3?? 29.Nec5?? Bc5?? 30.Nc5+- Ra3 31.Nb7 Ree3 32.Rd2 Red3 33.Re2 g6 34.c5 Ra4 35.c6 Rc3 36.Nd6 Rd4 37.Nb7?? a4 38.Na5? Rb4–+ 39.Ra2 a3 40.Nb7?? Rb2 41.Rb2 ab2 42.b6 b1Q 43.c7 Rc2 44.Kg3 Qe1 45.Kh2 Qe5 46.Kg1 Rc7! 47.Nc5 Qc5 48.Kh2 Qb6 49.Kg3 Qd6 50.Kf2 Rc2 51.Ke3 Qd2 (51...Qd2 52.Ke4 Rc4 53.Ke5 Qd4; 51...Rd2 52.g3 Qd4) 0–1. horacyad2010 – chimlele, kurnik, 2011.

5.c4 c5 6.Nf3 d5 7.Na3 dc4 8.Qa4 Bd7 9.Ne5 Bd6 (9...a6!?=) 10.Nd7+/– (10.Nac4?! Nc4 11.Bc4 Nd5=) 10...Nd7 (10...Kd7 11.Bc3 b6 12.Ba5 ba5 13.Nc4+/–) 11.Bg7 (11.Nc4?! Nc4 12.Qc4 0-0=; 11.Bc4?! 0-0=) 11...Rg8 12.Bc3 b6 (12...a6!?+/–) 13.Ba5+- ba5 14.Nc4 Bc7 15.Rc1 Rg4? (better is 15...a6+-) 16.Nd6!! Bd6 17.Qg4 Ne5 18.Qg8 Bf8 19.Qh7 Qb6 20.Qe4 Rd8 21.Qe5 Bd6 22.Qe4 a6 23.ba6 Qb2 24.Rb1 Qa2 25.Bc4 Qa3 26.a7 f5 27.Qe6 (27.Qe6 Be7 28.Qg6 Kd7 29.Rb7 Kc8 30.a8Q) 1–0. pierre – MaRe01, internet, 2008.

5.c4 d5 6.cd5 ed5 7.Qc2 Be7 8.Nf3 Bd7 9.Be2 c6 10.a4 Rc8 11.Nc3 0-0 12.Ng5 (12.0-0 Nc4=) 12...h6 13.h4? (13.Nf3 Nc4=) 13...g6 (13...cb5 14.ab5 hg5 15.hg5 Ne4 16.Ra5 Qa5 17.Nd5 Bg5 (17...Rc2?? 18.Ne7) 18.Qe4 f5 19.Ne7 Be7 20.Qe7 Rf7 21.Rh8 Kh8 22.Qf7 Rc1 23.Bc1 Be6 24.Qe6 Qc7+-) 14.Nf3=+ Bf5 15.d3 Re8 16.Nd4 Qd7 17.Qd1 c5 18.Nf5 Qf5 19.g4 Qe5 20.Qc2 (better is 20.Bf3=) 20...Qd6 (better is 20...d4 21.Nd1 Qe6=+) 21.g5+/– hg5 22.hg5 Nd7?? (better is 22...Nh7+/–) 23.Ne4!+- (23...Qe5 24.Be5 Ne5 25.Qc3+-) 1–0. Otte,Marco – van de Wal,B, Wag.Ext.4vsVelp3, 2000.

5.Nf3 d5 6.d3 Bd6 7.Nbd2 a6 8.a4 Bd7 9.c4 b6 10.Be2 Nb7 (10...0-0 11.e4 Bb4 12.0-0=) 11.d4 (11.Ne5 Nc5+=) 11...0-0 12.0-0 c6 (12...ab5 13.ab5 Ra1 14.Qa1 dc4 15.Qa6=) 13.bc6 (13.ba6 Na5+= (13...Ra6? 14.c5 Bh2 15.Nh2+-)) 13...Bc6= 14.Qb1 Qc7 15.Rc1 Ne4 (15...Rfc8 16.cd5 Nd5 17.Nc4+=) 16.cd5 ed5 17.Ne4 de4 18.Ne5 Be5 19.de5 Nc5 20.a5 (20.Bd4 Rfb8+=) 20...Rab8 21.Bd4 (21.Qc2 ba5 22.Qc5 Rb2 23.Ba6+/- (23.Qa5 Qa5 24.Ra5 Re2-/+)) 21...ba5= 22.Qc2 (better 22.Rc5!? Rb1 23.Rb1=) 22...Nb3-/+ 23.Qc6 (23.Ba6!? Rfe8 24.Bf1 (worse 24.Qc6 Qc6 25.Rc6 Na1-+) 24...Na1 25.Ba1-/+) 23...Qc6-+ 24.Rc6 Na1 25.h3 Nb3 26.Ra6 Rbc8 27.e6 Rc1 28.Kh2 fe6 29.Re6 (29.Be5 Rf5 30.Bf4 g5-+) 29...Rf2 30.Bh5 (30.Bg4 Nd4 31.ed4 Re1-+) 30...g6 31.Bg4 h5 (better 31...Rcc2 32.Kg3 h5-+) 32.Rg6 Kf7 (32...Kh7!? 33.Bh5 Nd4 34.ed4 Rf5-+) 33.Bh5-/+ Ke7 34.Rg7 (34.Be5 Nd2 35.Bd6 Kf7=+) 34...Ke6 (34...Kf8!? 35.Rd7 Rcc2-/+) 35.Bg4=+ Kd5 36.Rg5 Kc4 (better 36...Kd6!? 37.Rg6 Ke7=+) 37.Be6+= Kd3?? (better 37...Kb4 38.Bb3 Kb3 39.Ra5 Rd1+=) 38.Bb3+- Rb1 39.Ba4 Ra1 (39...Rb4 40.Bb5 Kd2+-) 40.Bb5 Kc2 (40...Kd2 41.Ba1 Ke3 42.Rg3 Kd2 43.Bc3 Kc1 44.Re3+-) 41.Rc5 (41.Ba1 Kb3+-) 41...Kd1 (41...Kd2 42.Ba1 Ke3 43.Kg3+-) 42.Bc6 (better 42.Ba1!? Ra2 43.Bd4 a4+-) 42...Ke2 (42...Rc1 43.Ba4 Kd2 44.Ra5+-) 43.Be4 (better 43.Ba1 Ke3 44.Rc4 Ra2+-) 43...Ke1 (43...Ra3+-) 44.Bf3 (44.Bf3 Raa2 45.Kg3+-) 1-0. jhonores (2160) - reazul24 (1660), Hourly SuperBlitz Arena, lichess.org, 2020.

5.Nf3 Nd5 6.c4 (6.Be2 Nb6+=) 6...Ne7 (6...Nb6 7.c5 Bc5 8.Bc3+-) 7.Be2 (7.Bc3 b6+=) 7...Ng6 (7...d5 8.c5+=) 8.0-0 f6 (8...a6 9.a4+=) 9.Bc3+- (9.Bc3 b6 10.Ba5 ba5 11.Qa4+-) 1–0. GuestQWGR – GuestGXPV, freechess.org, 2018.

5.Nf3 Be7 6.c4 0-0 7.Bc3 c6 (7...b6 8.Ba5 ba5 9.Qa4=) 8.Qa4 b6 9.Ba5 ba5 10.bc6 dc6 11.Qc6 Bd7 (11...Rb8 12.Qa4=) 12.Qb7+= Bc5 13.Qb2 (13.Ne5 Rb8 14.Qf3 Ba4+=) 13...a4 (13...Bc6 14.d4 Bb4 15.Nbd2+=) 14.a3 (14.d4 Rb8 15.Qc2 Bb4 16.Nbd2 Bc6+/-) 14...Bc6 15.Ne5 (15.d4 Rb8 16.Qc2 Bb6+/-) 15...Be4+= 16.d4 Bb6 (16...Rb8 17.Qd2 Rb1 18.Rb1 Bb1 19.dc5=) 17.Qd2 (17.f3 Rb8 18.Qc1 Bd4 19.ed4 Qd4+/-) 17...h5? (better 17...Bb1!? 18.Rb1 Ba5=) 18.Nc3+/- Ba5 19.f3 Bb7 (19...Rb8 20.Rc1+/-) 20.Be2 (20.Bd3 Rc8 21.Rc1 Qc7+-) 20...Rc8+/- 21.0-0 (21.Rc1+/-) 21...h4? (better 21...Nd5 22.Rfc1 Nc3 23.Rc3 h4+=) 22.Qc2 Bc7 (22...h3 23.g3+-) 23.f4 h3 24.Bf3 Bf3 25.Rf3 (25.gf3?! Be5 26.fe5 Nd5 27.Nd5 ed5+/-) 25...Be5 26.fe5 Ng4 (26...Nh7 27.c5 (worse 27.Qa4 Ng5 28.Rg3 f6+-; 27.Rh3?! Ng5 28.Rg3 Rc4+-) 27...hg2 28.Qg2+-) 27.Qe2 (27.Rh3 f5 28.ef6 Nf6+-) 27...f5? (27...hg2 28.Kg2 Nh6 29.Ne4+-) 28.c5 (28.Rh3 Qg5+-) 28...a6? (better 28...hg2 29.Qg2 Ne3 30.Re3 Qd4+-) 29.Rh3 (29.Qa6 Qe8 30.Qa4 Ne5 31.Rh3 Nc6+-) 29...Qg5 (29...Rc6+-) 30.Rg3 (30.Qa6 Rfe8+-) 30...Rb8?? (better 30...Qh4 31.Rg4! fg4 32.Na4 g3+-) 31.h3 (worse 31.Na4 Rb3+-) 31...Rb3 32.Nd1 (better 32.Qe1 Qh4 33.Na4 f4 34.Rg4 Qe1 35.Re1 Ra3+-) 32...Re3 (32...Qh4 33.Rf3 Ne3 34.Ne3 Qd4+-) 33.Ne3 f4 (33...Qf4 34.hg4 Qg3 35.gf5 Qf4+-) 34.Rg4 Qf5 35.Nf5 Rf5 (35...Rf7 36.Nh6 Kh7 37.Qe4 Rf5 38.Qb7 Rg5 39.Rg5 Kh6 40.Qg7) 36.Rf4! Rf4 (36...Rf4 37.Qa6 Combination) 37.Rf1 (37.Rf1 Rf1 38.Qf1 g6 39.c6 Kh7 40.Qf7 Kh6 41.Qf8 Kh7 42.c7 g5 43.c8Q Kg6 44.Qe6 Kh5 45.Qfh6) 1-0. e4_e5_f4 (1645) - Wrong_player (1625), lichess.org, 2020.

5.Nf3 Ng8 6.Be2+= f6 7.0-0 b6 8.c4 Bb7 9.d4 Rc8 (9...a6 10.Nc3+-) 10.a4 (10.Nbd2!?+-) 10...Bf3= 11.Bf3 (11.gf3 c6+=) 11...Nc4 12.Bc1 c5 13.dc5 (13.d5 Ne5=) 13...Rc5 (13...Bc5 14.Nd2 Ne5 15.Bb2=+) 14.Na3 Na5 (14...Ne5 15.Bh5 g6 16.Be2=) 15.Bb2 (15.Bd2 d5=) 15...Rg5 (better 15...d5=) 16.Qd2?? (better 16.e4+=) 16...Nb3–/+ 17.Qc3 (better 17.Qd3 Na1 18.Ra1–/+) 17...Nc5?? (17...Na1 18.Ra1 Qb8 19.Qd2–+) 18.Rad1 (better 18.Qc2!?=) 18...Na4–/+ 19.Qc2 Nc5 (better 19...Nb2!? 20.Qb2 Qc7–/+) 20.h4= Rg6 (20...Rf5 21.Qe2=) 21.Bh5 Ke7 (21...f5 22.g3=) 22.Bg6 hg6 23.g3 Nh6 (23...Qe8 24.e4=) 24.Qg6+= Nf5 25.Nc4 (25.Nc2 Nd6+=) 25...Rh6 26.Qg4 Qe8 (26...d5!?+=) 27.e4 Rg6? (better 27...Nh4 28.Bc1 Qg6+-) 28.Qh3?? (better 28.Qf4 Nh6 29.Qc7+-) 28...Ne4+= 29.h5 Rh6 (29...Rg5!? 30.g4 Nh6+=) 30.g4+- Nfd6?? (better 30...d5 31.Ba3 Kf7 32.gf5 dc4 33.fe6 Kg8+-) 31.Nd6 Nd6 32.Ba3 Kf7 33.Bd6 (33.Rd6?! Bd6 34.Bd6 Kg8+-) 33...Bd6 (33...f5 34.Qa3 Bd6 35.Rd6 fg4 36.Qa7+-) 34.Rd6 Kg8 35.Rfd1 Qc8 (35...a5 36.ba6 Kh7+-) 36.Rd7 Qc5 37.Rd8 Kh7 38.Qd3 (better 38.Ra8 Rh5 39.Qh5 Qh5 40.gh5+-) 38...g6 (38...f5 39.Qd7 fg4+-) 39.Qd7 Qe7 40.Qe7 1–0. retiponziani (1890) – deroy, ChessWorld.net, 2009.

4.a3 c5?? 5.ab4+- cb4 6.e3 b6 (6...e6 7.Nf3+-) 7.Qf3 (better is 7.Nf3 e6+-) 7...Rb8 (7...d5+-) 8.Ra7 Rb7 (8...d5+-) 9.Rb7 Bb7 10.Qb7 Ng4 (10...e6+-) 11.Be2 (better is 11.Bd4 Nf2 12.Bb6 b3 13.cb3 Nh1 14.Bd8 Nf2+-) 11...Ne5 1–0. DEFFM – Suza, freechess.org, 2016.

4.Nc3 d5 5.d4 Bf5 6.Rc1 Ne4 7.a3 Nc3 8.Bc3 Na2 9.Bb2 Nc1 10.Bc1 e6 11.Nf3 Qd6 12.g3 f6 13.Bg2 c6 14.bc6 bc6 15.Nh4 Bg4 16.h3 Bh5 17.Bf4 e5 18.de5 fe5 19.Bc1 Rb8 20.0-0 Rb1 21.Qd3 e4 22.Qc3 Qc5 23.Qe5 Kd8 24.Qh5 Qc2 25.Qg5 Ke8 26.Qe5 Kd8 27.Bg5 Kc8 28.Qe8 Kb7 29.Qd7 Ka8 30.Qc8 Rb8 31.Qa6 Qb2 32.Be3 Qb7 33.Qa4 Qb5 34.Qc2 Ba3 35.Nf5 g6 36.Nd4 Qb7 37.Nc6 Rbc8 38.Qa4 Rc6 39.Qa3 Ra6 40.Qc3 Rc8 41.Qd4 Rb6 42.Ra1 Rb8 43.Bf4 Rc8 44.h4 Qc6 45.Qa4 1–0. Hgvanmoork (1780) – Net44 (1775), lichess.org, 2018.

4.c4+/– a6 5.a3 ab5 6.ab4 Ra1 7.Ba1 bc4 8.e3 (8.Qa4 c6+/–) 8...e5 (8...d5 9.d3 Bf5 10.Nc3+/–) 9.Bc4 (9.Be5 d5+-) 9...Bb4 (9...d5 10.Be2 Bd6 11.Nc3+-) 10.Nf3 (better is 10.Be5 Be7 11.Qf3+-) 10...d6?? (better is 10...e4 11.Ne5 d5 12.Qa4 Ke7 13.Qb4 Qd6+-) 11.Qa4 Bd7 (11...c6 12.Qb4 b5 13.Be2+-) 12.Qb4 b6 (12...e4 13.Ng1 Bc6 14.Bd4+-) 13.Qb3 0-0 14.Ng5 (14.d4 Qa8 15.de5 Qa1 16.ef6 Qf6+-) 14...Qe7 (14...Qa8 15.0-0 Bc6 16.Bf7 Kh8 17.f3+-) 15.d4 ed4 (15...Ng4 16.Nf3+-) 16.Bd4 Bc6 (16...c5 17.Bb2 Bf5 18.Bd3+-) 17.Qd3 (17.Qc2 Ne4 18.Nf7 d5+-) 17...g6 (17...Ne4 18.Nf3+-) 18.e4 (18.0-0 Nd7 19.f4 d5+-) 18...Be4 (18...Ne4 19.Ne4 Qe4 20.Qe4 Be4 21.0-0+-) 19.Ne4 (19.Bf6!? Bd3 20.Be7 Bc4 21.Bf8 Kf8 22.Nh7 Kg7+-) 19...Ne4 (19...Qe4 20.Qe4 Ne4 21.Kd1+-) 20.0-0 Qg5 (20...Nc5 21.Qc3 Ne4+-) 21.Qe4 (21...c5 22.Be3+-) 1–0. Heijster,Gerard – Cornelissen,Bernard, Euro Chess Tournament, 2005.

4.c4+/– a6 5.Qa4 c5 6.d4 (better is 6.Bf6!? ef6 7.a3+-) 6...d6 7.a3 ab5 8.Qa8 Nc2 9.Kd1 Na1 (9...Ng4 10.Nh3 Na1 11.Ba1 bc4 12.Qa4 Qd7 13.Qc4+-) 10.Ba1 bc4 11.Qa4 Bd7 12.Qc4 e6 (12...Ne4 13.Ke1+/–) 13.dc5 (13.Qc2 cd4 14.Bd4 e5+-) 13...dc5+/– 14.Bf6 Qf6 15.Nf3 b5 16.Qe4 Qd8 17.Nbd2 Bd6 18.e3 ½–½. Romischke – Rommeck, 1996.

4.c4+/– a6 5.Qa4 e6 6.a3 ab5 7.Qa8 Nc2 8.Kd1 Na1 9.Ba1 +/–.

4.c4+/– a6 5.Qb3 e5 6.a3 ab5 7.ab4 Ra1 8.Ba1 bc4 9.Qc4 d5 10.Qb3 Be6 (better 10...Bd6+-) 11.Be5 d4 (11...Bd6 12.Bd6 Qd6 13.Qb2+-) 12.Qa4 Bd7 (12...Qd7 13.b5+-) 13.b5 c6 (13...Bf5 14.d3 Bc5 15.Nf3+-) 14.bc6 (worse 14.Bd4 cb5 15.Qc2 Bd6+-) 14...Bc6 15.Qd4 Qd4 16.Bd4 Ne4 (16...Bd6 17.Nf3+-) 17.e3 Bb4 (17...Ng5 18.Nc3+-) 18.Bg7 Rg8 19.Bd4 Ng5 (19...Nd6 20.Nf3+-) 20.Ne2 (20.f3 Kd7+-) 20...Nh3 (20...Ne6 21.f3+-) 21.Ng3 Bd6 (21...Ng5 22.Nc3+-) 22.gh3 Bh1 (22...Rg3 23.hg3 Bh1 24.Nc3+-) 23.Nh1 Bh2 24.f4 Rg1 (24...Rg6 25.Nc3+-) 25.Nf2 Bg3 26.Ke2 Ke7 (26...Bh4 27.Nc3+-) 27.Ng4 (27.Nc3 f5+-) 27...Bh4 (27...Ke6 28.Nc3+-) 28.Nc3 Bf6 1–0. GuestPCMQ – GuestLRJP, freechess.org, 2020.

4.c4+/– c6 5.Qb3+- e5 6.a3 (6.Be5?! d5 7.cd5 Qd5 8.Bf6 Qb3 9.ab3 gf6+=) 6...c5? (better is 6...cb5 7.ab4 bc4 8.Qc4 d5 9.Qb5 Qd7 10.Qd7 Nd7+-) 7.ab4 cb4 8.Be5 Qe7 (8...d5 9.cd5 Nd5 10.e4+-) 9.d4 d6 (9...Ne4 10.Nf3+-) 10.Bf4 Nh5 (10...Ne4 11.Qb4 g5 12.Be3+-) 11.Bd2 a5 (11...a6 12.Nf3+-) 12.Bb4! Bf5 (12...ab4 13.Ra8) 13.Ra5 (13.Ba5 Nf4 14.e3 b6+-) 13...Ra5 14.Ba5 Bb1 (14...Qe4 15.Nd2 Qd4 16.Bc3+-) 15.Qb1 Nf4 16.e3 g6 17.g3 Ne6 (17...Nh5 18.Bg2 Nf6 19.Ne2+-) 18.Bg2 Nd8 (18...f5 19.Nf3+-) 19.Ne2 (19.Qe4 Qe6+-) 19...Bg7 20.Bd8 Qd8 (20...Kd8 21.Qa2+-) 21.Qe4 Qe7 22.Qb7 Qb7 23.Bb7 Kd7 24.Bc6 Kc7 25.Nc3 Re8 26.Be8 (26...Kd8 27.Bf7+-) 1–0. MrkT – martyclark, internet, 2005.

4.c4+/– e6 5.a3 Na6 6.ba6 ba6 7.Nc3 Rb8 8.Rb1 Be7 9.Nf3 Bb7 10.e3 Ne4 11.Bd3 Nc3 12.Bc3 Bf3 (12...0-0 13.Rb3 Bf3 14.gf3+-) 13.Qf3 Rb1 14.Bb1 0-0 15.0-0 f5 16.Qb7 Ba3 17.Qa6 Bc5 18.d4 Be7 19.Bc2 Bf6 20.Qa7 Qa8 21.Qc7 Qa3 22.Bd2 Qa2 23.Rc1 Bd8 (23...Rd8+-) 24.Qd7 Qc4 (24...e5+-) 25.Bf5! Qe2 (25...ef5 26.Rc4 Discovered attack; 25...Rf5 26.Rc4 Discovered attack (26.Qd8 Deflection; 26.Qd8 Overloading)) 26.Bb4 (26.Bb4 Qb2 27.Rb1 Qf2 28.Kf2 Rf5 29.Ke2+-) 1–0. Janek – Zack, internet, 2016.

4.c4+/– g6 5.a3+- d5 6.ab4 dc4 7.Qc2 Be6 8.e4 Bg7 9.Bc4 Bc4 10.Qc4 0-0 11.Ra2 Qd6 12.Nf3 c6 (12...Qd7 13.Ne5 Qd6 14.0-0+-) 13.bc6 bc6 14.Be5 Qd7 15.0-0 Rac8 (15...Qb7 16.Nc3+-) 16.Nc3 Ng4 17.Bg7 Kg7 18.h3 (18.Rfa1 Ra8+-) 18...Nf6 19.e5 Ne8 20.Rfa1 Rc7 21.Qc5 f6 22.Ra7 fe5 23.Rc7 (23.Qe5 Kg8 24.Ra8 Rb7+-) 23...Nc7 24.Ra7 Rf5 25.d4 ed4 26.Qd4 Qd4 27.Nd4 Rf4 28.Nce2 Nb5 29.Nb5 Re4 (29...Rb4 30.Nbc3 Kf7 31.Rc7+-) 30.Nbd4 Kh6 31.Kf1 e5 32.Nc6 Rc4 33.Ne5 Rb4 34.f4 Rb1 35.Kf2 Rb4 (35...g5+-) 36.Ng4 Kh5 37.Rh7 1–0. mrkt – NN, GameColony.com, 2002.

4.e3 c5 5.a3 Nbd5 6.c4 Nc7 7.Nf3 d5 8.a4 dc4 (8...Bg4 9.Be2=) 9.Bc4+= b6 (9...Bf5 10.0-0+=) 10.0-0 Bb7 11.d3 e6 12.Nbd2 Be7 13.Ne5 a5 14.e4 (14.Nc6 Bc6 15.bc6 0-0+/–) 14...0-0+= 15.Ndf3 h6 16.Nc6 Bc6 17.bc6 Nfe8 18.Qc2 Nd6 19.Rad1 b5 20.ab5 Ndb5 21.Bb5 Nb5 22.d4 cd4 23.Bd4 Nd4 24.Rd4 Qc8 25.Rd7 Re8 26.Rfd1 Ra6 (better is 26...a4+/–) 27.c7+- a4?? (27...Ra8+-) 28.Ne5 (better is 28.Re7 Ra8 29.Red7+-) 28...a3 (28...a3 29.Re7! Rf8 30.Nf7 a2 31.Nh6 Kh7+-). GuestQGFT – Gonfreecs, freechess.org, 2017.

4.e3 Nbd5=.

4.e3 e6 5.a3 Nbd5 6.c4 Nb6 7.a4 a6?? (better 7...d5=+) 8.a5+- c6 (better 8...Nc4!? 9.Bc4 d5+-) 9.ab6+- Qb6 10.Bd4 (10.Bf6 gf6 11.Nc3 Rg8+-) 10...Qd8 11.ba6 ba6 12.c5 Be7 13.Ne2 0-0 14.Ng3 Nd5 (14...d6 15.cd6 Bd6 16.Qc2+-) 15.Bd3 (15.e4 Nb4+-) 15...Qc7 (15...d6 16.cd6 Bd6 17.Ne4+-) 16.Qg4 (16.Nc3 d6 17.cd6 Bd6+-) 16...e5 (16...g6 17.f4+-) 17.Nf5 Do you see the mate threat? 17...Bf6 Black launches an attack 18.Ng7 (better 18.Bc3+-) 18...Bg7+- 19.Qf5 The mate threat is Qxh7 19...Nf6 20.Be5?? (better 20.Qe5 Qe5 21.Be5+-) 20...d6!–+ 21.Bf6?? (21.Bd6 Bf5) 21...Bf5 22.Bg7 Kg7 (better 22...Bd3 23.Bf8 Kf8 24.cd6 Qd6–+) 23.Bf5 dc5 24.Nc3 a5 25.0-0 Rad8 (better 25...Rfb8–+) 26.d3?? (better 26.Rfd1–+) 26...Qe5 27.Be4 (27.Ra5 Qc3 28.Ra4 Rd3 29.Bd3 Qd3–+) 27...Qc3 28.Bc6 (28.Rfc1 Qb2 29.Rab1 Qe5–+) 28...Rd3 29.f4 (29.Rfc1 Qb2–+) 29...Re3 30.Rad1 (30.Kh1 Rc8 31.Bb5 c4–+) 30...Qf6 31.Bb5 (31.Bd5 a4–+) 31...Re4 32.f5 Rd4 33.Bd3 (33.Kh1 Rd1 34.Rd1 Rb8–+) 33...Rfd8 34.Rf3 c4 35.Rg3 Kf8 36.Re1 Rd3 37.Rg4 Qd4 (37...Qf5 38.Rge4 Rd2 39.Re8 Re8 40.Rf1 Re1 41.Re1 Qf2 42.Kh1 Qe1) 38.Rd4 R3d4 39.f6 (39.Kf2–+) 39...Rd1 40.Rd1 Rd1 41.Kf2 c3 42.Ke2 (42.Kg3 c2 43.Kf4 c1Q 44.Ke4 Qc4 45.Kf3 Rd3 46.Kf2 Qc2 47.Ke1 Rd1) 42...Rd2 (42...c2 43.Ke3 c1Q 44.Ke2 Rd2 45.Kf3 Qc3 46.Kg4 Rd4 47.Kh5 Qc5 48.Kh6 Rh4) 43.Ke1 a4 44.h4 (44.h3 a3 45.Kf1 c2 46.Kg1 c1Q 47.Kh2 Qc7 48.Kg1 Qb7 49.g4 Qg2) 44...a3 45.g4 (45.Kf1 a2 46.Kg1 a1Q 47.Kh2 Qf1 48.Kg3 Rg2 49.Kh3 Qf3) 45...a2 46.g5 a1R (46...a1Q) 0–1. aravind555 (1625) – HBT20, lichess.org, 2019.

4.Bf6 gf6? 5.e4+-.

5.c4 Nb6 6.e3 Nc4?? 7.Bc4+- d5 8.Be2 b6 (8...Bf5 9.Nf3+-) 9.d4 (9.Nf3 e6+-) 9...Bf5 (9...a6 10.Nf3+-) 10.Bd3 (10.Nf3 e6+-) 10...Bg4 (10...Bd3 11.Qd3 a6 12.ba6+-) 11.Qc2 e6 (11...a6 12.ba6 Ra7 13.Nc3+-) 12.h3 (12.Qc6 Nd7+-) 12...Bh5 13.Nd2 c5 (13...a6 14.Qc6 Nd7 15.ba6+-) 14.dc5 (14.bc6 Qc7+-) 14...Rc8? (better is 14...bc5 15.Qa4 Nd7+-) 15.c6 Bd6 16.Ngf3 0-0 (16...Qc7 17.Bf6 gf6 18.Qc3 Bf3 19.Nf3+- (19.gf3?! Be5 20.Qc1 Ba1 21.Qa1 Ke7+-)) 17.Bf6 (17.0-0!? Bg6+-) 17...Qf6 18.Bh7 Kh8 19.Bd3 (better is 19.Nd4 e5 20.N4b3 e4+-) 19...g6?? (better is 19...Qa1 20.Qb1 Qa3–/+) 20.g4 (better is 20.0-0 Bf3 21.Nf3+- (21.gf3?! Qg5 22.Kh1 Qh5=)) 20...Qa1 21.Qb1 Qa3 22.gh5 g5 (22...gh5 23.Ng5 Bb4+-) 23.Ng5 Kg8 (23...Be7 24.h4 e5+-) 24.Rg1 (better is 24.Bh7 Kh8 25.Bg8 f5 26.Be6 Rc7 27.Bd5 Rf6+-) 24...d4 (24...Kh8 25.Bf1 f5 26.Ne6+-) 25.Bh7 (25.Bc4 f5 26.Nf7 Kh7 27.Be6 Rf7 28.Bf7 d3+-) 25...Kg7 (25...Kh8 26.ed4 f5 27.Bg6+-) 26.Ne6 Kf6 (26...Kh8 27.Nf8 Rf8 28.Bd3+-) 27.Qf5 (27.Nf8 Ke7 28.Qe4 Kd8+-) 27...Ke7 28.Rg7 (28.Nf8 Rc7 29.Qg5 Ke8+-) 28...Qc1 29.Ke2 d3 30.Kd3 (better is 30.Qd3 Qb2 31.h6 Rce8+-) 30...Qa3 (30...Bb4 31.Nf3 Qb1 32.Kc4 Qa2 33.Kb4 a5 34.Kc3 Qe6 35.Qe6 Ke6 36.Ng5 Kf6+-) 31.Ke2 Bc5 (31...Qa2 32.Nf8 Rf8 33.Qd7 Kf6 34.Qd6 Kg7 35.h6 Kh7 36.Qf8 Qb2 37.Qf7 Kh6 38.Qe6 Kg5 39.f4 Kh5 40.Qf5 Kh6+-) 32.Nc5 (better is 32.Nf4 Rc6 33.Nd5 Kd8 34.bc6 Qa6 35.Nc4 Qc8 36.Qf6 Ke8 37.Rg5 Qb7 38.Re5 Qe7 39.Re7 Kd8 40.Ra7 Kc8 41.Ra8) 32...bc5 33.Qd7 (33.Qe5 Kd8 34.Qd6 Ke8 35.Qd7) 33...Kf6 34.Ne4 (34.Rg6! fg6 35.Ne4 Ke5 36.Qd6 Ke4 37.Qe6) 34...Ke5?? (better is 34...Kg7 35.Qg4 Kh8+/–) 35.f4 (35.Qd6) 1–0. von Rosenberg,Clemens – Street,Mark, IECC, 2013.

5.c4 Nb6 6.e3 c6 7.a4 d5 8.Bf6 ef6 9.c5 Bc5 10.Qc2 Qe7 11.Nf3 d4 12.bc6 bc6 13.Bd3 g6 14.0-0 de3 15.de3 0-0 16.Nc3 Nd5 17.Nd5 cd5 18.Bb5 Bb7 19.Qb3 Rfd8 20.Rfc1 Rac8 21.Rc2 Qe6 22.Rac1 Bb6 ½–½. W Labahn – Driftmann, Espelkamp 1981.

5.c4 Nb6 6.e3 d5 7.c5 Nc4 8.Bc4 (8.Bf6!? ef6 9.d4+=) 8...dc4= 9.Qc2 (9.Nf3 Bf5=) 9...Qd3 (9...Qd5!? 10.Nf3 Qc5 11.Bf6 ef6–/+) 10.Qd3= cd3 11.Nf3 e6 12.c6 bc6 13.bc6 Ba6 14.Nc3 Rb8 15.Rb1 Bd6 16.0-0 0-0 17.Nd4 Rb3?? (better is 17...Bc4+=) 18.Nb3+- 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013.

5.c4 Nb6 6.e3 d6 7.Be2 Be6 (7...e5 8.Nf3=) 8.d3+= c5 9.Nf3 d5 10.Nbd2 g6 11.a4 a6 12.a5 Nc8 (12...Nbd7 13.b6+=) 13.b6 Bg7 14.Nb3 Qd6 15.Rc1 (15.Be5 Qc6+/–) 15...Nb6 (15...dc4!? 16.dc4 0-0+/–) 16.Be5+- Qc6 17.ab6 Qb6 (17...dc4 18.dc4 Qb6+-) 18.cd5 Bd5 19.Nc5 Qa5 20.Qd2 Qd2 21.Kd2 Rc8 22.d4 0-0 23.Bf6 Bf6 24.e4 Be4 (24...Rc5 25.Rc5 Be4+-) 25.Ne4 Bd4 (25...Bg7 26.Kd3 b5 27.Rc8 Rc8 28.Ra1+-) 26.Rc8 (26.Nd4 h6+-) 26...Rc8 27.Nd4 f5 28.Ng5 Kg7 (28...e5 29.Nb3 Rd8 30.Kc3 Rc8 31.Bc4 Kg7+-) 29.Nge6 Kf6 30.Rb1 Rb8 31.Rb6 (31.Ba6 Ra8 32.Bb7 Ra2 33.Ke1 Ra5+-) 31...Kf7 (31...a5 32.Nd8 Kg7 33.N8c6+-) 32.Bf3 a5 33.Nc5 (33.Bb7 a4+-) 33...Rc8 (33...Rd8 34.Kc3+-) 34.Nb7 a4 35.Ra6 Rc4 (35...Rb8+-) 36.Bd5 e6 37.Be6 Kg7 38.Bc4 a3 39.Ra3 (39.Nd6 Kf6 40.N6f5 Kg5 41.Nf3 Kf4 42.Be6 Kg4 43.h3 Kf4 44.Ra4) 39...Kh6 40.Ne6 (40.f4 Kg7 41.Nd6 h5 42.Ra7 Kh8 43.Nf7 Kg7 44.Ng5 Kf8 45.Nde6 Ke8 46.Bb5) 40...Kh5 41.Rh3 Kg4 42.f3 1–0. Schroeder,Ralf (1635) – Brosius,Reno, Berlin GER, Fruehling Open–B, 2014.

5.c4 Nb6 6.e3 e6 7.d4 d6 8.Nf3 Be7 9.Bd3 0-0 10.0-0 c5 (10...a6 11.ba6 ba6 12.Nc3+=) 11.bc6 (11.dc5 dc5 12.Qc2 Qc7+/-) 11...bc6+= 12.Nc3 (12.Nbd2 Rb8+=) 12...Ba6= 13.Qe2 d5 14.c5 Bd3 15.Qd3 Nc4 16.Bc1 Rb8 17.h3 Qc7 18.Nd2 Nd2 19.Bd2 Rb2 20.Rfb1 Rfb8 21.Rb2 Rb2 22.Rb1 Qb7 23.f3 Qb3 24.Rb2 Qb2 25.Nd1 Qb8 26.Bb4 Bd8 27.Qd2 Qg3 28.Qf2 (28.Ba5 Bc7 29.Bc7 Qc7=) 28...Bc7 29.Qg3 Bg3 30.Kf1 Nd7 31.f4 Bh4 32.g4 f5 33.g5 h6 34.gh6 gh6 35.Be1 Be1 36.Ke1 Nf6 37.Nf2 Kf7 38.Nd3 Nd7 39.Kf2 Kg6 (39...a6 40.Kf3+=) 40.a4 ½-½. kianas (2100) - Wayde (2140), ChessWorld.net, 2013.

5.c4 Nf4 6.e3 Ne6 7.Bf6 gf6 8.d4 Bg7 9.Bd3 d5 10.c5 (10.cd5 Qd5 11.Nf3 c5 12.bc6 Qc6+/–) 10...a6 (10...f5 11.Nd2 f4 12.Ngf3+=) 11.Nc3 (11.ba6 ba6 12.Nc3+/–) 11...0-0? (11...ab5 12.Bb5 c6 13.Bd3+=) 12.a4 (12.Qh5!? h6 13.ba6 (< 13.Nd5 ab5 14.Nb4 c6+/–) 13...ba6 14.Qd5+-) 12...c6 13.b6 Ng5 14.Nf3 e6 15.Ng5 fg5 16.h4 f5 17.hg5 Qg5 18.g3 e5 19.Qh5 h6 20.Qg5 hg5 21.Ne2 e4 22.Bc2 Be6 23.Kd2 f4 24.gf4+= gf4 25.Nf4 Bg4? 26.Rhg1 Bf3 27.Bd1 Rf7? 28.Bf3 ef3 29.Rg3 Kf8 30.Ne6 Kg8 31.Rag1 Re8 32.Rg7 Rg7 33.Ng7 Re4 34.Nf5 Kf8 35.Nd6 Re7 36.Rg3 Rh7 37.Rf3 Ke7 38.Nb7 Rh1 39.Na5 Ra1 40.Nc6 Ke6 41.b7 (41.b7 Rb1 42.b8Q Rb8 43.Nb8+-) 1–0. bluepiramid2 (1655) – sanyi49, kurnik, 2012.

5.c4 Nf4 6.e3 Ng6 7.h3 d5 8.a4 (8.cd5 Qd5 9.Nc3 Qd7=) 8...dc4 9.Bc4 Be6 (better is 9...e5!?=) 10.Be6+/– fe6 11.Nc3 Qd6 12.Nf3 0-0-0 13.Ng5 Rd7? (better is 13...Ne5 14.Ba3 Qd3 15.Ne6 Qg6+/–) 14.Nf7+- Qd3 15.Nh8 Nh8 16.Rb1 Ne4 (16...Ng6 17.a5+-) 17.Ne4 Qe4 18.f3 Qb4 (18...Qh4 19.Ke2 Ng6+-) 19.Bg7?? (better is 19.Bd4 Qd6 20.f4+-) 19...Qh4= 20.Kf1 Bg7 21.a5 Qc4 22.Qe2 Qe2?? 23.Ke2+= e5 24.b6 a6 25.bc7 Kc7 26.Rhc1 Kb8 27.Rc2 Ng6 28.Rbc1 Rd8 29.g3 e4 30.f4 Ne5? 31.fe5+- Be5 32.g4 h6 33.Rf1 Bg3 34.Rf7 e5 35.Rcc7 Bh4 36.Rb7 Kc8 37.Rfc7# 1–0. aleksandras19 – gabgra, kurnik, 2012.

5.e3 d6 6.d4=.

5.e3 e6 6.c4 Ne7 7.Nf3 Ng6 8.Be2 Be7 9.0-0 0-0 10.d4 d6 11.Nbd2 e5 (better 11...a6!?=) 12.de5+/- de5 13.Ne5 Ne5 14.Be5 Bd6 15.Bd6 Qd6 16.Nf3 Qe7 17.Qc2 Rd8 18.Nd4 Bg4 19.Bg4 Ng4 20.h3?? (better 20.Rfd1+/-) 20...Ne3=+ 21.fe3 Qe3 22.Qf2 Qd4 23.Qd4 Rd4 24.Rad1 Rad8 25.Rd4 Rd4 26.Rc1 Kf8 27.a4 b6 28.Kf2 (28.a5 Ke7-/+) 28...Ke7 (28...Rd2!? 29.Kf3 Ra2 30.Rd1 Ra4 31.Rd4-+) 29.Ke3-/+ Rd7 (29...c5 30.bc6 Rd6 31.a5-/+) 30.Re1 (30.c5 Rd5 31.cb6 cb6 32.Rc7 Rd7=+) 30...Kd6 31.Kf3 (31.Rd1!? Ke6 32.Ra1-/+) 31...Re7 32.Rc1 Kc5 33.Rc3 (33.g4 Kb4-+) 33...Rd7 34.Ke3 Rd4 35.Rd3 Rc4 (35...Rd3!? 36.Kd3 Kb4 37.g4-+) 36.Rd7 Kb4 37.Rf7 Rc3 (37...g5 38.Kd3-+) 38.Kf4 Rc4 39.Ke5?? (better 39.Ke3=) 39...Rc5-+ 40.Ke6 Ka4 41.Rg7 Ka5 (better 41...h6-+) 42.Rc7?? (better 42.Rh7 Kb5 43.g4-/+) 42...Kb5 (42...Rc7 43.g4-+) 43.Rc5?? (better 43.Rh7 a5 44.g4=) 43...Kc5 44.Ke5 a5 45.Ke4 a4 (better 45...Kc4 46.Ke3-+) 46.Kd3 a3 47.Kc3 b5 48.Kb3 b4 49.g3 Kb5 (better 49...Kd4-+) 50.g4 a2 (50...Kc5 51.h4 Kd5-+) 51.h4?? (better 51.Ka2 Kc4 52.h4=) 51…a1Q (51...a1Q 52.Kc2 Qc3 53.Kd1 b3 54.Ke2 b2 55.Kf2 Qd2 56.Kf3 b1Q 57.g5 Qf5 58.Kg3 Qdf2) 0-1. ThePurplePawn (1935) - opperwezen (2700), lichess.org, 2020.

5.e3 g6 6.Nf3 (6.c4 Nb6+=) 6...Bg7 7.Be2 c6 8.c4 Nb6 9.0-0 cb5 10.cb5 0-0 11.d3 d6 12.Nbd2 Bd7 13.a4 Nbd5 14.Qb3 Qa5 15.Nc4 Qc7 16.Rac1 Nb6 17.Ng5 Nc4 18.Rc4 Qb6 19.Bd4 Qd8 20.Qb2 (20.Rc2 e5 21.Bc3 a6+=) 20...e5= 21.Bc3 d5 22.Rb4 e4 (better is 22...d4 23.ed4 Nd5=) 23.de4+- de4 24.Ne4 a5?? 25.Nf6 Bf6 26.Bf6 Qb6 27.Rh4 Rac8 28.Qe5 Qe6 29.Qg5 Rc7 30.Qh6 Qf6 31.Qh7 1–0. algernon (2195) – heyuneverno (1940), net–chess.com, 2010.

5.a3 dc4 6.ab4 Nd5 7.e3 (7.Na3 f6+-) 7...Nb4 8.Bc4 Nd3 (8...Bf5 9.Qf3 e6 10.Na3+-) 9.Bd3 Qd3 10.Nc3 e6 (10...e5 11.e4+-) 11.Nge2 Bc5 (11...Bd6 12.e4+-) 12.0-0 (12.Nf4 Qd8+-) 12...0-0 (12...e5 13.f4 Bg4 14.h3 Be2 15.Qe2 Qe2 16.Ne2 ef4 17.Rf4+-) 13.Nf4 Qc4 (13...Qd7+-) 14.d4 (14.Ra4 Bb4 15.Ba3 a5 16.Bb4 ab4 17.Ra8 bc3 18.dc3 Qb5+-) 14...Bb4 15.Ra4 Qf1 1–0. GuestLTQB – GuestCZNF, freechess.org, 2017.

5.a3 dc4 6.ab4 Qd6 7.Qa4 Nd7 8.b6 cb6 9.Nf3+-.

5.a3 c5 6.ab4 cb4 7.e3+-.

5.a3 Qd6 6.ab4 Qb4 (6...dc4 7.Qa4 Nd7 8.b6 cb6 9.Nf3+-) 7.Ba3 (7.Bf6!? ef6 8.cd5 Qb5+-) 7...Qc4 8.f3 (better is 8.e3!? Qg4 9.Nf3+-) 8...Qb5+= 9.e3 (9.Nc3 Qd7+=) 9...Qb6= 10.Nc3 e6 (10...e5 11.Rb1 Qe6 12.Bf8 Rf8 13.d4=) 11.Rb1 Qa5 12.Bf8 Rf8 13.Kf2 (13.f4+=) 13...b6 (better is 13...a6!?+=) 14.Nb5+/– Kd7 (14...Kd8 15.Ra1 Qb4 16.Qc2+/– (worse is 16.Ra7 Ra7 17.Na7 Bd7=)) 15.Ra1 Qb4 16.Na7 c5? (16...Bb7 17.d4+-) 17.Rb1 (better is 17.Qc2 c4 18.Nc6+-) 17...Qh4?? (better is 17...Qa5 18.Bb5 Kd6+-) 18.g3 Qh5 (18...Ne4 19.Kg2 (19.fe4?! Qf6 20.Kg2 Ra7+-) 19...Qh6 20.Qa4 Ke7 21.Nc6 Kf6 22.Qa8 Nd2 23.Qa1 d4 24.ed4+-) 19.Qa4 (19.Nc8?! Rfc8 20.Rb6 c4+/–) 19...Ke7 (19...b5 20.Qb5 Kd8 21.Qb6 Ke8 22.Nc8 Rc8 23.Qd6 Ne4 24.fe4+-) 20.Nc6 Ke8 (20...Kd7 21.Qa8 d4 22.Qa7 Kd6 23.Qe7 Kc6 24.Bb5 Kd5+-) 21.Qa8 Qf5 22.Qc8 1–0. DEFFM – GuestHHJN, freechess.org, 2018.

5.a3 e5 6.ab4 dc4 7.Be5 Bb4 8.b6! Qe7? (8...ab6 9.Ra8 Pinning (9.Ra8 Deflection); 8...cb6 9.Qa4 Double attack) 9.Ra7 (9.Ra7 Qe5 10.Qa4 Ke7 11.Qb4 (11.Ra8?! Qb2 12.Qd1 Ne4+-) 11...c5 12.Qa5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a3 Bf5 6.ab4 dc4+-.

5.a3 Bf5 6.ab4 e5 (6...dc4 7.Qa4+-) 7.c5 c6 (7...d4 8.Nf3 Qd5 9.e3+-) 8.Be5 Ne4 (8...Be7 9.Nf3 0-0 10.Nc3+-) 9.d3 Ng5 10.bc6 bc6 11.Ra6 Bd7 12.h4 Ne6 13.e4 (13.Nc3 f6 14.Bg3 Qc8+-) 13...d4 (13...Qc8 14.d4 de4 15.d5+-) 14.Nf3 f6 1–0. DEFFM – GuestVPXF, freechess.org, 2018.

4.a4 a6 5.c4 e6 6.e3 d5 7.Nc3 Bb4 8.Nf3 0-0 9.Be2 Nbd7 10.0-0 Nc5 (10...dc4 11.Bc4 ab5 12.ab5 Ra1 13.Qa1=) 11.d4 Nce4 12.Ne4 Ne4 13.Qc2 c6 14.Ne5 ab5 15.ab5 Ra1 16.Ra1 c5 (16...cb5!? 17.cd5 ed5+=) 17.dc5 Nc5 18.cd5 Qd5 19.Bf3 Qb3 20.Qc1 Nd3 21.Nd3 Qd3 22.h3 (better 22.Ra4!? Be7 23.b6+/-) 22...Qb5= 23.Rb1 Qc5 24.Qd1 Qe7 (24...Ba5 25.Bd4 Qf5 26.Qc1=) 25.Qd4 (25.Bg7!? Rd8 26.Qa4 Kg7 27.Rb4+/-) 25...f6= 26.Ba1 Bc5 27.Qc4 b6 28.Bg4 (28.Bd4 Bd7=+) 28...Re8 (28...Kh8 29.Bd4=+) 29.Bd4=+ Bb7 30.Bc5 bc5 31.Be6 Qe6 32.Qe6 Re6 33.Rb7 Rc6 34.Kf1 c4 35.Ke2 c3 (35...Ra6!?=) 36.Rb1+= Kf7 37.Kd3 c2 38.Rc1 Ke6 39.Rc2 Rd6 40.Ke2 g5 41.g3 h5 42.f3 Ra6 43.h4 Ra3 44.hg5 fg5 45.f4 Kf6 (45...Ra5 46.Kf3+/-) 46.Kf3 (46.Rc6!? Kg7 47.fg5 Ra5+-) 46...gf4 47.gf4 Kf5? (better 47...Ra5!?+/-) 48.Rc5 (48.Rc5 Kg6 49.Rc6 Kg7 50.f5+-) 1-0. muhammadaudii (2130) - samerh777 (1900), lichess.org, 2020.

4.a4 c6 5.c4 cb5 6.cb5 e6 7.e3 Be7 8.Nf3 0-0 9.Be2 Ne8 (9...d5 10.Bf6 Bf6 11.d4=) 10.0-0+= Bf6 (10...d5 11.Qc2+=) 11.d4+- d5 12.Nbd2 Bd7 13.Rc1 (better 13.Bd3+-) 13...Qb6? (better 13...Be7+=) 14.Ba3+- Nd6 (14...a6+-) 15.a5! Qa5 A deflection 16.Bd6 Annihilates a defender: d6 16...Re8 17.Qb3 a6 (17...Be7 18.Be7 Re7 19.Qc2+-) 18.ba6 (better 18.Bc7 b6 19.Ra1 ab5 20.Ra5 ba5+-) 18...Ra6 (18...b5 19.Ra1 Qb6 20.Bc5+-) 19.Bb8 Rb8 20.h3 (better 20.Ba6 Qa6 21.Ra1+-) 20...Ba4 21.Qb2 Bd7? (21...b5 22.Nb3 Qb4 23.Rc3+-) 22.Ra1 (better 22.Ba6 Qa6 23.Rc7 Ba4+-) 22...Rb6 23.Ra5 (23.Qc2 Qb4+-) 23...Rb2 24.Rb1 Rd2?? (24...Rb1 25.Nb1 Bd8+-) 25.Nd2 (25.Rb7 Rc8 26.Nd2 Be8+-) 25...b6 (25...Bc6 26.Ra7+-) 26.Rb6! Rf8 (26...Rb6 Deflection from a8 27.Ra8) 27.Rb7 (27.Ra7!? Be8+-) 27...Be8 28.Raa7 g6 29.Bb5 (better 29.Rc7+-) 29...Kg7 (29...Bb5 30.Rb5 Kg7+-) 30.Be8 Re8 31.Rf7 Kh6 32.Rf6 (32.Rh7 Kg5 33.f4 Kf5 34.g4) 32...Rg8 33.Rff7 Kh5 (33...g5 34.Rh7 Kg6 35.Nf3 g4 36.Ne5 Kg5 37.Raf7 gh3 38.f4) 34.Rh7 Kg5 35.f4 Kf6 (35...Kf5 36.Rhf7) 36.Raf7 (36.Rhf7) 1–0. BeepBeepImAJeep (2660) – GMRaefKebbe (1690), lichess.org, 2017.

4.a4 c6 5.c4 d5 6.e3 dc4 7.Bc4 cb5 8.ab5 e6 9.Nf3 Bb4 10.0-0 0-0 11.d4 a6 12.ba6 Na6 13.Nc3 Bd7 14.Qb3 Qe7 15.Ba3 Ba3 16.Ra3 Bb5?? (better is 16...Bc6+=) 17.Nb5+- 1–0. Fournier,Frederic (1770) – 491 (1705), Active (2/0), 2005.

4.c4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 (7...d6 8.Nf3=) 8.Nf3 cb5 9.cb5 Qa5 (better 9...d5!?=) 10.Qc2+- Kd8?? (better 10...Qd8+-) 11.Ne5 Rg8 12.Nf7 Ke8 13.Bf6 (13.Nd6 ed6 14.Bf6 gf6 15.Qc8 Ke7 16.Qb7+- (16.Qb8?! Qa1 17.f4 Qb1 18.Kf2 Qb5+=)) 13...ef6 (13...gf6 14.Nd6!! ed6 15.Qc8 Ke7 16.Qb7 Qa1 17.Qe4 Kd8+-) 14.Qc8 Kf7 15.Qc4 (15.Qb8 Qa1 16.e3 Qb1 17.Ke2 Qb5 18.Ke1 Qb1 19.Ke2 d5=) 15...Ke8 (15...Ke7 16.Qg8 Qb5 17.Nc3+-) 16.Qg8 Qb5 17.Qh7 Qb1 (17...Nc6+-) 18.Qb1 1–0. DEFFM – GuestXTQS, freechess.org, 2019.

4.c4 c6 5.e3 cb5 6.cb5 e6 7.Nf3 d5 8.Nc3 Be7 9.Be2 a6 10.0-0 ab5 11.Nb5 0-0 12.Qc2 Nc6 13.a3 Bd7 14.d4 Na7 15.a4 Qb6 16.Ne5 Bb5 17.ab5 Nb5?? (better is 17...Rfc8 18.Qd3 Ne4+=) 18.Qb3+- Qc7 19.Bb5 Qb6 20.Rfc1 Bd6 21.Ba4 Qd8 22.f3 Be5 23.de5 Nd7 24.Ba3 Re8 25.Bd6 f6 26.Qb7 Ne5 27.Be8 Ra1 28.Ra1 Qe8 29.Ra8 (29.Ra8 Qa8 30.Qa8 Kf7 31.Qf8 Kg6 32.Be5 fe5 33.Qe7+-) 1–0. Fournier,Frederic (1925) – JuanjoOscuro (1920), Active, 2005.

4.c4 d6 5.e3 Bf5 (5...e5 6.d4 e4 7.Nc3=) 6.d3 e5 7.e4 Bg6 8.Nf3 Nbd7 (8...a6 9.Be2=) 9.Be2 Nc5 10.Nc3 Qd7 11.h3 Be7 12.0-0 0-0-0 (12...a6 13.Bc1=) 13.Qc2 (13.a4 h6+=) 13...Nh5 (13...Ng8 14.d4 ed4 15.Nd4=) 14.Nd5 Nf4 (better is 14...Nf6!?=) 15.Nf4+/– ef4 16.Bg7 Rhg8 17.Bc3 (17.Bd4 f5 18.e5 Bh5+/–) 17...Bh5 18.Kh2 Rg6 (18...f5 19.e5+/–) 19.Ne5 (better is 19.d4 Ne6 20.Rg1+-) 19...Rg2?? (better is 19...de5 20.Bh5 Rg5 21.Bf7 f3+=) 20.Kg2+- Rg8 21.Kh2 Qe6 22.Bh5 Rg5 23.Bg4 (23.Bg4 Rg4 24.Ng4+-) 1–0. wlittle (1830) – mgriffin (1870), net–chess.com, 2001.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nd5 8.Nf3 d6 9.Nc3 (9.c4 Nf6+=) 9...Nc3 (9...Nf6 10.e4+=) 10.Bc3= Bg4 (10...e5 11.e4+=) 11.Be2+= Bf3 (better is 11...e5!?+=) 12.Bf3+/– (12.gf3?! e6=) 12...b6 13.0-0 e5 (13...e6 14.Qa1+/–) 14.Qe2 Be7 15.Ra1 0-0 16.Qc4 c5 (16...Qc8 17.Ra7 Bd8 18.Bb4+-) 17.bc6 Qc7 18.Bd5 (18.Qb5 Rc8 19.Ra8 Bf6+-) 18...Rc8 (18...Kh8+-) 19.Bf7 Kf8 (19...Kh8 20.Bd5+-) 20.Bg8 Bf6 21.Bb4 (worse is 21.Bh7 Nc6 22.Qe6 Re8 23.Qg8 Ke7+-) 21...Re8 (21...Rd8 22.Ra8 g5 23.Rb8 Rb8 24.Bd6 Kg7 25.Bc7 Rg8+-) 22.Bd6! (22.Bd6 Qd6 23.Qf7) 1–0. Janek – Steyves, internet, 2018.

4.e3 a6 5.a4 b6 6.Be2 Bb7 7.Nf3 c6 (7...e6 8.0-0=) 8.c4 (8.Nc3 e6=) 8...d5 (8...e6 9.0-0=) 9.Nc3 (9.cd5 Nd5 10.0-0 e6=) 9...cb5 (9...dc4 10.Bc4 e6 11.0-0=) 10.ab5+= dc4 11.Bc4 ab5 (11...a5 12.e4+=) 12.Bb5 (12.Ra8 Ba8 13.Nb5 e6+=) 12...Nbd7 13.0-0 (13.d3 Ra1 14.Ba1 e6=) 13...Ra1 14.Qa1 (better is 14.Ba1 e6 15.Na4+=) 14...Qa8? (better is 14...Bf3 15.gf3 e6=) 15.Qa8+- Ba8 16.Nd4 (better is 16.Ne5! Bb7 17.Ra1+-) 16...e6? (better is 16...e5 17.Ra1 Bb7+=) 17.Ra1+- Bb7 18.Ra7 Bd5 (18...e5 19.Nb3 Bg2 20.Kg2 Ke7+-) 19.Nd5 Nd5 (19...ed5 20.Nc6 Ne4 21.Ra8 Nb8 22.Rb8 Kd7 23.Ne5 Kc7 24.Nd7+-) 20.Ra8 (better is 20.Bd7 Ke7 21.Be6 Kf6 22.Bd5+-) 20...Ke7 21.Nc6 (better is 21.Ra7 Kf6 22.Rd7 Rg8+-) 21...Kd6 22.e4 (better is 22.Ba3 Nc5 23.d4+-) 22...Nc7 (22...Kc5 23.Na7 N5f6+-) 23.Rd8 (23.Ba3 Nc5 24.Rd8) 23...Nb5+/– 24.Nb8?? (24.Ne5 f6 25.Rd7 (25.Nd7?! Ke7 26.Nf8 Rf8 27.Rf8 Kf8=) 25...Kc5 26.Nf7+-) 24...Kc7–/+ 25.Rd7 Kb8 26.Rf7 Bc5 (26...h5 27.Kf1–+) 27.Bg7–+ Rg8 (27...Rd8 28.d4–+) 28.g3 (28.Bh6 Rd8 29.Rh7 Nc3 30.Bf4 Ka8–/+) 28...Nd6 (28...Rd8 29.Bh6 Nd6 30.Bf4–/+) 29.Rd7? (better is 29.Be5=) 29...Ne4–+ 30.Be5 (30.d4 Bd6–+) 30...Kc8 31.Rc7 (31.Ra7 Bf2 32.Kg2 Rg6–+) 31...Kd8 32.d4 (32.d4 Bd4! 33.Ra7 Bf2 34.Kg2–+). GuestYDHC – GuestTKPZ, freechess.org, 2016.

4.e3 a6 5.a4 e6 6.Nf3=.

4.e3 a6 5.ba6 Na6 6.Ba6 Ra6 7.Nf3 d5 8.0-0 Bf5 9.d3 e6 10.Nbd2 Be7 11.Nb3 0-0 12.Nbd4 Bg6 13.Qd2 h6 14.Ne5 Bh7 15.c4 dc4 16.Nc4 (16.dc4!? c5 17.Ndf3–/+) 16...c5–+ 17.Nb3 Qd3 18.Qd3 Bd3 19.Rfc1 b5 20.Ncd2 (better is 20.Ne5 c4 21.Nd3 cd3 22.Rd1–/+) 20...c4 21.Nd4 Rb6 22.Bc3? (22.N2f3 Bd6–+) 22...Bc5 23.N2f3? Re8 24.Ba5 Rbb8 25.Ne5 Bh7 26.Nec6? Rb7 27.Bb4 Bb4 28.Nb4 e5 29.Ndc6 Bf5 30.f3 e4 31.f4 Be6 32.Nd4 Bd7 33.a3 Bg4 34.g3 Be2?? 35.Ne2+- Ng4 36.Rc3 Rd7 37.Nd4 Rb7 38.Nd5?? Kh7?? 39.Nb4 g6?? 40.Rb1+- f5 41.Kg2 Nf6 42.h3 Nd7? 43.Rc2 Nc5?! 44.Rcb2 Nd3 45.Nd3 ed3 46.Rb5 Rb5 47.Nb5 d2? 48.Rd1 Rd8?? 49.Nd4 c3?? 50.Kf2?? Re8?? 51.Ke2+- Rd8 52.Kd3 Re8 53.Kc3 Rd8 54.Kd3 Re8 55.Kd2 Re6 56.Ke2 Re4 57.a4 Re7 58.a5 1–0. Fournier,Frederic (1790) – siwar25 (1690), Active ajedrez21.com, 2005.

4.e3 d5 5.Nf3=.

4.e3 e5 5.Nf3 d6 6.c4 Nbd7 7.d4 ed4 8.ed4 Be7 9.Be2 0-0 10.0-0 Ng4 11.Nc3+= Bf6 (11...a6!?+=) 12.h3+/- Nh6 13.d5 (13.Qc2!?+/-) 13...Nf5 14.Qb3 (14.Re1 Nc5=) 14...Nc5 15.Qc2 Nd4 16.Nd4 Bd4 17.Rad1 Bf6 (17...Qh4 18.Qd2 Bf6 19.Rde1=) 18.Bf3 g6 (18...a6 19.Rfe1=) 19.Ne4+= Bb2 20.Qb2 Ne4 21.Be4 f5 22.Bd3 (22.Bf3 f4+=) 22...f4= 23.Rde1 (23.Qd2 f3 24.Rfe1 fg2 25.Kg2 Qh4=+) 23...Qg5 24.f3 (24.Kh2!?=+) 24...Bh3-/+ 25.Re2 Rae8 26.Rfe1 (26.Be4 Re5-/+) 26...Re2 (26...Re3!? 27.Re3 fe3=+) 27.Qe2 Bf5 (27...h6 28.Qc2 Kg7 29.Qc3 Kh7 30.Qc2=+) 28.Be4 (28.Bf5!? Qf5 29.Qf2=+) 28...Bd7 29.Qd3 a6 30.ba6 ba6 31.c5 Bb5 32.Qc3 Rd8 33.cd6 cd6 34.Qc7 (34.Qb4 Bd7-/+) 34...Rd7 35.Qc8 Kg7?? (35...Qd8 36.Qd8 Rd8 37.Rc1-/+) 36.Rc1?? (better 36.a4 Rd8 37.Qc3 Qf6 38.Qf6 Kf6 39.ab5 ab5 40.Bc2+-) 36...Qe7 (36...Qd8 37.Qc3 Qf6 38.Qa5-/+) 37.Qa8 (37.a4 Ba4 38.Qa6 Ra7-/+) 37...h5 (37...Rc7!? 38.Rc7 Qc7-/+) 38.Rc8=+ Qf7 (38...Rc7 39.Rg8 Kf7 40.Bg6 Kf6 41.Be4 Rc1 42.Kh2=+) 39.Rh8?? (39.a4!? Ra7 40.Qb8 Ba4 41.Qd6+-) 39...Ra7 (better 39...Re7!?-/+) 40.Qb8 Rb7 41.Qa8 (41.Qc8 Re7 42.Rd8 Rc7 43.Rg8 Qg8 44.Qc7 Qf7 45.Qd6 Qa7 46.Kh2 Qf7+=) 41...Ra7 (better 41...Re7!?-/+) 42.Qb8 Re7 43.Qd8?? (43.Rc8 Rd7 44.Rh8 Re7=) 43...Rd7 (better 43...Be8 44.Re8 Re8 (worse 44...Qe8 45.Qd6 Re4 46.fe4 Qe4 47.Qd7 Kh6 48.a4-/+) 45.Qd6 Qf6-+) 44.Qc8= Bc4 The isolani on d5 becomes a target (better 44...Re7 45.Rd8 Rc7 46.Rg8 Qg8 47.Qc7 Qf7 48.Qd6 Qf6 49.Qc7 Kh6+=) 45.Qc4?? (better 45.Re8 Ba2 46.Re6 Bd5 47.Rg6 (47.Bd5?! Rc7 48.Qa6 Qf5 49.Qa1 Kh6 50.Qh8 Rh7+-) 47...Qg6 48.Bg6+-) 45...Re7?? (better 45...Kh8 46.Qa6 Qe7-+) 46.Qd4+- Qf6 (46...Re5 47.Ra8 Qf6 48.Ra7 Kf8 49.Ra6+-) 47.Qf6 (better 47.Rg8! Kg8 48.Qf6+-) 47...Kf6 48.Rb8 Rc7 49.Rb3 (better 49.Rf8!? Ke7 50.Rf4 Rc4+-) 49...Rc1 50.Kh2 Rc3 (50...Rc3 51.Rc3 Ke5+-). ClayPigeons (2130) - StopDictat (2140), Rated Bullet game, lichess.org, 2020.

4.e3 e6 5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bc5 (8...d5 9.Be2=) 9.d4+= Bf8 10.Bd3 b6 11.0-0 Bb7 12.Nbd2 d5 13.c4 Be7 14.cd5 Bd5 (14...Nd5 15.Ne5+=) 15.e4 Bb7 16.Qc2 c5 17.bc6 Bc6 18.Ne5 Bb7 19.Qa4 Nbd7 20.Bb5 Bc8? (20...Qc7 21.Bb2 Bd6 22.Ba3 Ba3 23.Qa3+-) 21.Nc6 (better is 21.Rc1 0-0 22.Nc6+-) 21...Qc7 22.Ne7 Ke7 23.e5 Nd5 24.Qa3 Ke8? (24...Kd8 25.Ne4 Rg8+-) 25.Ne4 Kd8 (25...f6 26.Rc1 Kd8 27.Rc7 Nc7 28.Bd7 Bd7 29.ef6 gf6 30.d5 Nd5 31.Nf6+-) 26.Nd6 Nb8 (26...Rf8 27.Rc1 Qc1 28.Qc1 Nc7+-) 27.Rc1 Qe7 (27...Bd7 28.Rc7 Nc7 29.Nf7 Ke8 30.Nd6 Kd8+-) 28.Rc8 1–0. GuestKFHB – GuestYZBB, freechess.org, 2017.

4.e3 e6 5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 Nf6 5.Nf3 e6).

4.e3 e6 5.Nf3 d6 6.a4 b6 7.d4 d5 8.Be2 Ne4 9.0-0+/– Bd6 10.a5 0-0 11.c4 dc4 12.Nfd2 Nd2 13.Nd2 Qh4? 14.g3+- Qh3 15.Bf3 c6 16.Nc4 Bc7 17.ab6 cb5 18.bc7 Nd7 19.Ba3 bc4 20.Bf8 Kf8 21.Ba8 Nf6 22.Bg2 Qf5 23.Ra7 Nd5 24.e4 Nc3 25.ef5 Nd1 26.Rd1 1–0. Buczinski,Henryk (2140) – Bester,Kazimierz, CP–2011–P–00060, 2011.

4.e3 g6 5.Nf3 Bg7 6.d4 c6 7.a4 cb5 8.ab5 0-0 9.Bd3 a6 10.Nbd2 Qc7 11.0-0 b6 12.c4 Bb7 13.Qb3 ab5 14.Ra8 (14.Qb5 d5+/-) 14...Ba8 (14...bc4!? 15.Nc4 Ba8 16.Qb6 Rc8+=) 15.cb5 Bd5 16.Qa3 d6 17.e4 Bb7 (17...Be6 18.Rc1 Qb7 19.Ra1+/-) 18.Rc1 Qd7 19.Qa7 Rc8 20.Rc8 Qc8 21.Qb6 Nbd7 22.Qa5 Nh5 23.g3 Qa8 (23...Nhf6 24.h3+/-) 24.Qc7 (24.Qa8 Ba8 25.Kf1 Nb6+-) 24...Qc8 (24...Nhf6 25.Ne1 Bh6 26.f4+-) 25.b6 e5? (25...Nhf6 26.Nb3 Qc7 27.bc7 Nb6+/-) 26.Nc4 (worse 26.Qd6 ed4 27.Bd4 Bd4 28.Qd4 Nhf6+-) 26...Nhf6 (26...Bf8 27.de5 de5 28.Nce5 Ne5 29.Be5 Ng7+-) 27.Nd6 Qc7 28.bc7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nf3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 (7...d5 8.g3=) 8.c4 (8.e3 e6+=) 8...cb5= 9.cb5 Qa5? (better 9...d5!?=) 10.Qc2+- Kd8?? (better 10...Qd8+-) 11.Ng5+- e6 (11...Rg8 12.Nf7 Ke8+-) 12.Bf6 gf6 13.Nf7 Ke7 14.Nh8 (14.Qc8?! Qa1 15.Qc2 Kf7+-) 14...Qd8 (14...f5 15.Qc8 Qa1+-) 15.Qh7 Kd6 16.Nf7 (16.Nf7 Ke7 17.Nd8 Kd8 18.b6+-) 1–0. DEFFM – thyagarajan, freechess.org, 2019.

4.Nf3 a6 5.e3 ab5 6.Bb5 c6 7.Be2 d5 8.0-0 Qb6 9.Bd4 c5 10.Be5 Nc6 11.Bf4 Nh5 12.Bg5 f6 13.Bh4 Bg4 14.h3 Be6 15.Nh2 g6 16.Bh5 gh5 17.Qh5 Bf7 18.Qd1 Rg8 19.Nf3 Ne5 20.Ne5 fe5 21.a4 Qh6 22.Bg3 Qg7 23.Qe2 c4 24.e4 d4 25.Na3 Rc8 26.Rfb1 Rc7 27.Rb5 1–0. Bonetti,Shane – Legas, ICC, 2002.

4.Nf3 b6 5.Nc3 c6 6.e4 cb5 7.Bb5 Nc6 (7...Bb7 8.Bd3+=) 8.d4 a6 9.Bd3 Nd4?? (better is 9...d5+=) 10.Nd4+- (10...Qc7 11.0-0+-) 1–0. pcmvr – cengel, ChessWorld.net, 2002.

4.Nf3 c6 5.a4 g6 6.e3 (6.e4 d6+=) 6...Bg7 7.c4 (7.Be2 0-0=) 7...a6 (7...d5 8.d4=) 8.Be2+= ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 d5 12.0-0 Nbd7 13.Nc3 0-0 14.Qb3 e6 (14...Nb8 15.Bb2=) 15.Bb2+- Re8 16.Ba3 Qc7 (16...d4 17.Nd4 Nb6 18.Nf3+-) 17.Rc1+- Ne5? (better 17...Qb8+-) 18.Nd5!+- Nf3 (18...Nd5 19.Rc7) 19.Bf3 (19.gf3?! Qb8 20.Nb6 Bd7+-) 19...Qb8 20.Ne7 (better 20.Nc7 Rd8 21.d4+-) 20...Re7? (better 20...Kh8+-) 21.Be7 e5 22.Bd8 (better 22.Qc4!? Bf5+-) 22...Be6 23.Qb4?? (23.Qd3 e4 24.Be4 Ne4+-) 23...Bf8?? (23...Qd8 24.Bb7 h6+=) 24.Qh4 (better 24.Qa5 e4 25.Bf6+-) 24...Qd8=+ 25.Bb7 Qd2 Threatening mate: Qxc1 26.Rf1 Bc4?? (better 26...Be7=+) 27.Qc4+- (27.Qf6 Bf1 28.Qe5 Qd1–+) 27...Kg7 28.Bc6 Qd6 29.b6 Qb8 30.b7 e4 31.Be4 (31.Ra1 Qe5 32.Ra5 Qb2+-) 31...Ng4 (31...Bd6 32.g3 Be5 33.Rb1+-) 32.f4 (better 32.Qd4 Kh6 33.f4 Qc7+-) 32...Ne3 (32...Nf6 33.Ra1 Bd6 34.Qd4+-) 33.Qd4 Kg8 34.Qe3 Qc7 (34...Bd6 35.Ra1 Bf4 36.Qc3+-) 35.Kh1 (better 35.Rc1 Qd6+-) 35...Bc5 36.Qc3 Qb6 37.Rd1 Be3 38.Qc8 Kg7 39.b8Q (39.b8Q Qb8 40.Qb8 Bb6 41.Qe5 Kf8 42.Rd7 Kg8 43.Qe8 Kg7 44.Qf7 Kh6 45.Qh7) 1–0. aravind555 – atuldon123, lichess.org, 2018.

4.Nf3 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 Nf6 5.Nf3).

4.g3 e6 5.Bg2 Bc5 6.d4 Bb6 7.c4 0-0 8.c5 Ba5 9.Bc3 Bc3 10.Nc3 d5 11.Nf3 Bd7 12.a4 Qe7 13.Ne5 a6 14.0-0 ab5 15.Nd7 (15.ab5 Ra1 16.Qa1 Bc8+/–) 15...Nbd7= 16.Nb5 (16.ab5 Rfe8=) 16...Rac8 (16...c6 17.Nd6 b6 18.Qc2+=) 17.Na7 Ra8 18.Nb5 c6 19.Nd6 Rab8 (19...b6 20.Qc2+=) 20.a5 Ne8 21.Ne8 Rfe8 22.Qd3 Qf6 23.e4 de4 24.Be4 Rbd8 25.Bh7 (better is 25.Rfc1!?+=) 25...Kh8+= 26.Be4 (better is 26.Qb1 Qd4 27.Rd1+=) 26...Qg5?? (better is 26...Nc5 27.Qe3 Qd4–/+) 27.Qb3 Nf6 28.Bg2 Rd4 (28...Re7 29.Qe3 Qh5 30.h3+/–) 29.Qb7+- Ng4? (better is 29...Qc5 30.Qf7 Rd7+-) 30.Qf7 Red8 31.h4 (better is 31.h3 Ne5 32.Qe6+-) 31...Qf6 (31...Qc5 32.Qe6 Rc4+-) 32.Qf6 gf6 (32...Nf6 33.a6 R4d7 34.Rfe1+-) 33.a6 Ra8 34.Bc6 Rc8 (34...Ra7 35.Bb7 Rd7 36.c6+-) 35.a7 Rdd8 36.a8Q Ra8 37.Ra8 (37.Ra8 Ra8 38.Ba8+-) 1–0. mic (2335) – gbsrao (2375), net–chess.com, 2016.

5.a4 cb5 6.ab5 b6 7.Nf3+- Bb7 8.Be2 d5 9.0-0 e6 10.c4 Be7 (10...Nbd7 11.cd5 ed5 12.Nd4+-) 11.cd5 Bd5 12.Nc3 0-0 13.Nd5 Nd5 14.Ra4 (14.Ne5 Bf6+-) 14...Bf6 (14...Nd7!?+-) 15.d4+- Nd7 16.Qa1 (16.Qd2!? Be7+-) 16...Qc7+- 17.Rc1 Qb7 18.Qb1 h6 19.Bc4 Nc7 (19...Be7!?+-) 20.Ba3+- Rfe8 21.Bd6 Be7 (better 21...Rec8+-) 22.Bc7 Qc7 23.Be6! Qd6 (23...fe6 24.Rc6 Double attack (24.Rc7 Discovered attack; 24.Rc6 Decoy)) 24.Rc6 fe6 25.Rd6 Bd6 26.Qg6 (26.g4 Re7+-) 26...Rac8 27.g3 Re7 28.Ra7 (28.Nd2!? Nf8 29.Qd3 Rec7+-) 28...Nf8 29.Re7 Ng6 30.Re6 Be7 31.Rg6 Bf6 32.h4 Rc1 33.Kg2 Rb1 34.g4 Rb5 35.e4 h5 (35...Kf7 36.h5+-) 36.gh5 Rh5 37.e5 Kf7 38.Rg4 (38.ef6 Kg6 39.fg7 Kg7–/+) 38...Be7 39.d5 Rh6 (39...Rh8 40.e6 Kg8 41.Ne5+-) 40.e6 Kf6 (40...Kg8+-) 41.Rf4 Kg6 42.Ne5 Kh7 43.Nc6 Bd6 44.e7 Be7 (44...Rg6 45.Kf3 Be7 46.Ne7+-) 45.Ne7 Rd6 (45...b5 46.Nc8 g5 47.hg5+-) 46.Rf5 g6 (46...Kh6 47.Rg5 g6 48.Rg6 Rg6 49.Ng6 Kg6 50.h5 Kf5+-) 47.Rf7 Kh8 48.Kf3 b5 49.Ke4 Rb6 50.Ke5 b4 (50...Ra6 51.d6 Ra2 52.d7 Rd2 53.Nd5 Re2 54.Kf6 Rf2 55.Kg6 Rg2 56.Kh6 Kg8 57.d8Q Kf7 58.Qe7 Kg8 59.Qe8) 51.d6 Ra6 (51...b3 52.d7 Rb5 53.Kd6 Rb8 54.Nc8 Kg8 55.Ke6 Rb6 56.Nb6 b2 57.d8Q) 52.d7 Ra8 53.Nc8 Kg8 (53...Ra5 54.Kf6 Ra6 55.Ke7 Ra7 56.Na7 b3 57.d8Q) 54.Kf6 Ra6 55.Ke7 Rd6 (55...Ra7 56.Na7 b3 57.d8Q) 1–0. DEFFM – GuestDDXG, freechess.org, 2019.

5.a4 cb5 6.ab5+= d5 7.c4 (7.Nf3 Bg4=) 7...dc4= 8.Bc4 Qc7? (better is 8...Nbd7=) 9.Qb3+/– Be6 (9...e5!? 10.b6! Qc5 11.Bf7 Kd8 12.ba7 Nc6+-) 10.Be6+- fe6 11.Qe6 Qd6? 12.Qc8+- Qd8 13.Qb7 Nbd7 14.Ra7 Ra7 15.Qa7 e5 16.Ne2 Bc5 17.Qa2 Nb8 18.0-0 Ke7 19.d4 ed4 20.ed4 Bd6 21.Re1 Re8 22.Nf4 Kf8 23.Ne6 Re6 24.Qe6 Bb4 25.Bc3 Bc3 26.Nc3 Nfd7 27.Re3 Nf6 28.d5 Nbd7 29.d6 Qa8 30.h3 Qa1 31.Kh2 Qc3 32.Rc3 1–0. Fredek (2090) – Ron Rizun, Freundschaftspartie, 5m + 0s, 2005.

5.a4 d6 6.Nf3=.

5.a4 e6 6.Nf3 Be7 7.d4 0-0 (7...a6 8.Nbd2+=) 8.Bd3 d5 9.Nbd2 (9.0-0 a6+=) 9...Bd7 10.0-0 a6 11.Ne5 (11.Qe2 ab5 12.ab5 Ra1 13.Ra1 cb5=) 11...Bc8 (11...ab5!? 12.ab5 Ra1 13.Qa1 cb5=) 12.Qf3 (12.c4 dc4 13.Bc4 ab5 14.ab5 Ra1 15.Qa1 Nbd7+-) 12...Nfd7 13.Qh3 (13.Nd7 Nd7 14.bc6 bc6+=) 13...g6+= 14.Ndf3 (14.Ng4 h5 15.Ne5 Ne5 16.de5 ab5 17.ab5 Ra1 18.Ra1 cb5=) 14...Ne5 (14...ab5 15.ab5 Ra1 16.Ra1 cb5 17.Qh6+= (17.Bb5? Qb6–+)) 15.Ne5 (15.de5 Nd7+=) 15...Nd7 (15...ab5!? 16.ab5 Ra1 17.Ra1 cb5=) 16.bc6+= Ne5 17.cb7 Bb7 18.de5 Qb6 (18...Bc6 19.c4+-) 19.Bd4 (19.Rfb1 Qa5+-) 19...Qc6 (19...Qa5!?+-) 20.a5+- Rac8 (20...f5 21.Rfb1+-) 21.Rfb1 Rc7 (21...Qd7 22.Rb2+-) 22.Rb6 Qd7 23.Rab1 Bc8 24.Qh6 Qa4 (24...Bc5 25.h4+-) 25.Ra1 Qd7 26.c3 Bc5 27.Rd6! (worse 27.Ba6 Ba6 28.Ra6 Qb5+-) 27...Bd6 28.ed6 Qd6?? (better 28...e5 29.dc7 ed4+-) 29.Qg7 1–0. DEFFM – AJEDREZZZZ, freechess.org, 2020.

5.Nf3 d5=.

5.a4 e6 6.c4 Be7 7.Nf3 Bd7 8.Be2 0-0 9.0-0 c6 10.d4 cb5 11.cb5 d5 12.Nc3 Bd6 13.Ba3 Be8 14.Bd6 Qd6 15.Ne5 Nbd7 16.Nd7 (16.f4 a6+/-) 16...Nd7 (16...Bd7 17.Qd3+=) 17.Bd3 e5 (17...Rc8!? 18.Rc1 f5+=) 18.de5+/- Ne5 19.Be2 Bd7 20.Qb1 (better 20.Qd5!? Qc7 21.Rfc1+/-) 20...Be6 21.Rd1 Qe7? (better 21...Rac8!? 22.Nd5 Bd5+=) 22.Nd5+/- Bd5 23.Rd5 Kh8 (23...Rad8 24.Rd4+/-) 24.Qd1 (24.Qe4 Rae8+-) 24...Ng6 (24...Rfd8 25.Rc1+/-) 25.Rc1 (25.Rd7 Qf6 26.Rb7 Rfb8 27.Rb8 Rb8+-) 25...Rae8 (25...Rfd8 26.Qd4 Rd5 27.Qd5+-) 26.Bd3 (better 26.Rd7!? Qe5+-) 26...Ne5 27.Be2 f6?? (27...Ng6 28.Rd7 Qe5+-) 28.Rcc5 Ng6 29.Rc4 b6 (29...Rd8+-) 30.Rd7 Qa3 (30...Rd8 31.Rcc7 Rd7 32.Rd7+-) 31.Ra7 (31.Rcc7 Ne7+-) 31...Ne5 32.Rd4 (32.Rcc7 Rg8+-) 32...Rg8 (32...Rc8 33.Qf1+-) 33.Rb7 Qc5 (33...Rc8 34.Qe1 (34.Rb6?! Rc1=) 34...Rc1 35.Rd1+-) 34.Rd5 Qc8 (34...Qa3 35.Rb6 Ra8 36.Rd4+-) 35.Ra7 (better 35.Rb6!? Qc3+-) 35...h6 (35...Qb8 36.Ra6 Rd8 37.f4 Rd5 38.Qd5+-) 36.Ra6 Rd8 (36...Re6 37.Qd4 Qc2 38.Bd1+-) 37.Rd8 (better 37.Rb6 Qc7 38.Ra6 Rd5 39.Qd5 Qc2+-) 37...Rd8 38.Qf1 Nd3?? (38...Qc7+-) 39.Bd3 Rd3 (39...Qc5+-) 40.Qd3 Qc1 41.Qf1 Qc8 (41...Qc7 42.a5! Qd7 43.ab6+-) 42.Rb6 Qg8 43.a5 (better 43.Qd3 f5 44.Rd6+-) 43...Qh7 44.a6 (44.Rb8 Qg8 45.Rg8 Kg8 46.Qc4 Kh8 47.b6 Kh7 48.Qf7 h5 49.b7 Kh6 50.b8Q h4 51.Qf4 g5 52.Q4f6) 44...Qg8 45.a7 Kh7 46.Rb8 (46.Rb8 Qf7 47.Qd3 g6 48.a8Q Kg7 49.Qb7 h5 50.Qf7 Kf7 51.Qd7; 46.Qd3 g6 47.Qd7 Kh8 48.Rb8 f5 49.Rg8 Kg8 50.a8Q) 1-0. Jimito100 (2045) - apollo142758 (2025), Rated Bullet game, lichess.org, 2020.

5.c4 e5 6.a4 Nbd7 7.Nc3 g6 (7...e4 8.d3=) 8.Nf3 Bg7 9.Be2 0-0 10.d4 (10.0-0 a6+=) 10...e4 (10...a6 11.0-0+=) 11.Nd2+= Re8 12.0-0 Nf8 (12...Qe7 13.a5+=) 13.Qc2 e4 draws heavy fire 13...Bf5 14.Rac1 h5 15.Nd5 White plans c5 15...N8h7 (15...h4 16.h3+=) 16.Nf4 Qd7 (16...Bh6 17.Qc3+=) 17.c5+- d5 18.c6 bc6 19.Qc6 Qc6 (19...Rec8 20.Ba3+-) 20.Rc6 (20.bc6?! Rab8 21.Bc3 h4+=) 20...Rac8 (20...Bf8+-) 21.Rc5 (21.Ra6 Ra8+-) 21...Red8 (21...Bf8 22.Rcc1+=) 22.Bd1 (22.Rfc1 Rd7+-) 22...Ng5 23.Bb3 The pressure on d5 grows 23...Ne6 24.Ne6 fe6 25.Rfc1 Rd7 26.Rc6 Ne8 27.Ba3 Bf8 28.Bf8 Kf8 29.a5 Rd6 30.Ba4 Rc6 (30...Ke7 31.f3+-) 31.Rc6+- (31.bc6?! Rb8+=) 31...Ke7 (31...Rb8 32.Nb3+-) 32.h3 (32.Ra6 Nd6 33.Ra7 Kf6+-) 32...h4? (32...Nd6 33.Kf1+-) 33.Nb3 (33.Ra6 Kf6+-) 33...Nd6 34.Nc5 (34.Ra6 Rb8 35.Ra7 Nb5 36.Bb5 Rb5 37.Rc7 Kd6+-) 34...Nc4+- 35.Ra6 Ra8 36.Bb3 Nd6 37.b6 cb6 38.ab6 ab6 39.Ra8 bc5 40.dc5 Nb5 41.Ba4 Nc3 42.Ra7 Kf6 (42...Kd8 43.Bd7+-) 43.c6 (43.Bd7 Ke5+-) 43...e5 (43...Na4 44.Ra4 Ke7 45.Kh2+-) 44.c7 d4 (44...Na4 45.Ra4 Ke7 46.Ra8+-) 45.ed4 ed4 (45...Ne2 46.Kf1 Nd4+-) 46.Bb3 (better 46.Ra5 Bc8 47.Ra8 Ke6 48.Rc8 Kd6+-) 46...d3 (better 46...Nb5 47.Ra6 Ke7+-) 47.Ra8 Kg5 (47...Bd7 48.Rd8 Ke7 49.c8Q Bc8 50.Rc8 Ne2 51.Kf1+-) 48.c8Q (better 48.Ra5 Ne2 49.Kf1+-) 48...Bc8 49.Rc8 Ne2 50.Kh2 (50.Kf1 Nd4 51.Ba4 Kf4+-) 50...Nd4 51.Rc5 Kf4 52.Bd1 Ne6 53.Rc4 g5 (53...Ke5 54.g3+-) 54.Kg1 (54.Bg4 Ke5 55.Be6 Ke6 56.Re4 Kd5+-) 54...Ke5 55.Kf1 (55.f3 e3 56.Re4 Kf5 57.Re3 Nc5+-) 55...Nd4 (55...Kd5 56.Rc8 Kd4 57.Bg4+-) 56.Ke1 (56.Rc5!? Kf6+-) 56...Nf5 (56...Ne6 57.f3 e3 58.Re4 Kf5 59.Re3+-) 57.Ra4 (57.Ra4 Nd4 58.Kd2+-) 1–0. BeepBeepImAJeep (2645) – lamorocha (2190), lichess.org, 2016.

5.c4 e5 6.Nf3 Be7 7.d4 0-0 8.de5+= Ng4 (8...de5 9.Qd8 (9.Be5?! Qd1 10.Kd1 Ng4=+) 9...Rd8 10.Be5 Bb4 11.Bc3+/-) 9.ed6+/- Bd6 10.Be2 (10.Bd3 Nf6+/-) 10...Nd7 11.h3 Nge5 12.Nbd2 Qe7 13.0-0 b6 (13...Rd8 14.Qc2+/-) 14.Nd4 (14.Ne5 Be5 15.Bf3 Rb8+/-) 14...Bb7 (14...Nc5 15.Qc2+/-) 15.N2f3 (15.f4 Ng6 16.Nf5 Qe6+-) 15...Qf6 16.Qc2 Nf3 17.Bf3 (17.gf3?? Qg5 18.Kh1 Qe5 19.Qh7 Kh7 20.Bd3 Kh8 21.Rfd1 Qh2) 17...Bf3 18.Nf3 (18.gf3?! Qg5 19.Kh1 Qh4=) 18...Qg6 (18...Ne5 19.Be5 Be5 20.Ne5 Qe5 21.Rad1+/-) 19.Nd4 (19.Qg6 hg6 20.Rfd1 Rfd8+-) 19...Qc2+/- 20.Nc2 Bc5 (20...a6 21.Rfd1+/-) 21.Rad1 Nf6 (21...Nb8!?+-) 22.Bf6 gf6 23.Nd4 (23.a4 a6+-) 23...Rae8 (23...a6 24.a4+-) 24.Nc6 (24.Nf5 Re4+-) 24...Ra8 (24...Re4 25.Rd2+-) 25.Rd7 Kg7 (25...a6 26.a4+-) 26.Rfd1 Kg6 (26...Bd6 27.Kf1+-) 27.Rc7 Rfd8 (27...a6 28.Rd2 Rfe8+-) 28.Nd8 (better 28.Rd8 Rd8 29.Nd8 Bd6 30.Ra7 h5+-) 28...Be7 (28...a6 29.Nb7 Bb4 30.Rd8 Rd8 31.Nd8 ab5 32.cb5+-) 29.Nc6 (better 29.Re7 h5 30.Nf7 Rg8+-) 29...Bc5 30.Rdd7 (30.Rd8 Rd8 31.Nd8 Kf5+-) 30...Rf8 (30...a6 31.Rf7 h5 32.g4 hg4 33.hg4+-) 31.Ne7 Kg7 (31...Be7 32.Re7 h5 33.Ra7+-) 32.Nf5 (32.Ra7!? h6+-) 32...Kg6 33.Ng3 (33.Nh4 Kg7+-) 33...h5 34.Ne4 Bb4 35.Nd6 (better 35.Rc6 Kg7+-) 35...Bd6 36.Rd6 h4 (36...Ra8 37.c5 bc5 38.Rc5+-) 37.Rcc6 (better 37.Ra7!? Rc8+-) 37...Kg7 38.Rf6 Rd8 39.Kh2 Rd2 40.e4 (40.Rf4!? Rd7+-) 40...Ra2 (40...Rd7 41.Rf4+-) 41.Rf4 1-0. ClayPigeons (2150) - The_Don71 (2130), Rated Bullet game, lichess.org, 2020.

5.Nf3 e5 6.c4 Be7 7.d4 ed4 8.ed4 0-0 9.Be2 Nbd7 10.0-0 Nb6 11.Nbd2 c6 12.a4 d5 13.c5 Nbd7 14.Bd3 a6 15.Qc2 ab5 16.ab5 Ra1 17.Ra1 Qc7 18.b6 Qf4 19.Bc1 Qg4 20.h3 Qh5 21.Ra8 g6 22.Nf1 h6 (22...Ne4 23.Be4 de4 24.Qe4 Bf6+-) 23.Ng3 Qf3 24.gf3 Kg7 25.Qd2 g5 (25...Ng8 26.Qf4 Ndf6+-) 26.Nf5 (26.Nf5 Kh8 27.Ne7+-) 1-0. Oldenev – Gerry, internet, 2021.

5.Nf3 e5 6.d3 Be7 7.Be2 Be6 8.0-0 Nbd7 9.Nbd2 0-0 10.h3 a6 11.c4 ab5 12.cb5 Nc5 13.a4 Qd7 14.Ng5 Bf5 15.e4 Bg6 16.Ngf3 Rfe8 17.Qc2 d5 18.Ne5 Qe6 19.Ng6 fg6 20.Bf6 gf6 21.Bg4 Qd6 22.ed5 Qd5 23.Bf3 Qd3 24.Qd3 Nd3 25.Bb7 Ra7 26.Bc6 Rd8 27.Nf3 Nb2 28.Rab1 Na4 29.Rfe1 Bc5 30.Re6 Rd6 31.Re8 Kf7 32.Rbe1 Rd3 33.R1e7 Be7 34.Kf1 Nc5 35.Ke2 Rda3 36.Nd4 Ra2 37.Kf3 R7a3 38.Kf4 Rf2 39.Nf3 Ne6 40.Kg3 Bd6 41.Kf2 1–0. Phomopsis (1635) – jhosepmanuel (1630), lichess.org, 2020.

4.bc6+- bc6 5.Be5 1–0. Wall,Bill – Thorpe,Anthony, chess.com, 2010.

4.bc6 dc6 5.Be5 Bd6 6.Bd6 cd6 7.e3+-.

4.bc6 dc6 5.Be5 Ng8 6.Nf3 Be7 (6...Nf6+-) 7.Bg7 f6 (7...Bf6 8.Bh8 Bh8+-) 8.Bh8 Qd6 (8...Nh6 9.e4+-) 9.e3 Bg4 (9...Bd7 10.Nd4 0-0-0 11.Qh5+-) 10.Bd3 a5 11.h3 Bd7 12.Nh4 (12.Nc3 0-0-0 13.Nd4 c5+-) 12...Kd8 13.Qh5 b5 14.Bh7 (better 14.Qh7 Qe6+-) 14...a4 15.Bg8 Qc5 16.Qc5 Bc5 17.Bf6 Kc8 18.Nc3 Kb7 19.Ne4 Rg8 20.Nc5 Kb6 21.Nd7 Kb7 22.Nc5 Kc8 23.Be5 (better 23.Nf5 Rf8 24.Ne7 Kd8 25.Ne6 Ke8 26.Nf8 Kf8+-) 23...Rf8 24.Bc7! Kc7 25.Ne6 Kb7 26.Nf8 c5 27.Ne6 c4 28.Rb1 b4 29.Rb4 Kc6 30.a3 Kd5 31.Nf4 (31.Rb6 c3 32.Nc7 Kc5 33.Rf6 cd2 34.Kd2 Kc4 35.Rc6) 31...Kc5 (31...Kd6 32.Nf5 Kd7 33.Rc4 Kd8 34.Ke2 Kd7 35.Rb1 Ke8 36.Rb7 Kd8 37.e4 Ke8 38.Rc8) 32.Ra4 (32.Ke2 Kc6 33.Rhb1 c3 34.Rd4 cd2 35.Nhg6 d1Q 36.Kd1 Kc5 37.Ne6 Kc6 38.Ne5) 32...Kb5 33.Rb4 Kc5 34.Ne6 Kd5 (34...Kc6 35.Nd4 Kd7 36.Nhf5 Kc7 37.Ke2 c3 38.Rhb1 cd2 39.Rb7 Kc8 40.Nd6 Kd8 41.Ne6) 35.Nd4 (35.Rb6 c3 36.Nc7 Kc5 37.Rf6 cd2 38.Kd2 Kc4 39.Rc6) 35...Kc5 (35...Kd6 36.Nhf5 Kc7 37.Ke2 Kc8 38.Rhb1 Kd7 39.Rb8 c3 40.R1b7) 36.Nhf5 Kd5 37.Rb5 (37.Rb5 Ke4 38.Nd6) 1–0. DEFFM – Fischerguest, freechess.org, 2019.

4.bc6 dc6 5.Be5 Nh5 6.e3 Qd2 (6...Nf6+-) 7.Nd2 b5 (7...b5 8.Qh5 Be6+-). GuestRCPF – GuestKTXX, freechess.org, 2017.

4.Be5 c5 5.e3 (5.Nf3 e6+-) 5...Qb6 (5...e6 6.Nf3+-) 6.Nf3 (6.Nc3 e6+-) 6...d6 7.Bb2 (7.Bf6 ef6 8.d4 Be6+-) 7...Qb5 (7...e5+-) 8.Bb5 (8.Bb5 Bd7 9.Bd7 Nd7 10.Ng5+-) 1–0. GuestNGVP – GuestKNBQ, freechess.org, 2016.

4.Be5 c6 5.Bf6 ef6 6.e4 (6.e3 Qa5+-) 6...Bc5 7.d4 Bb4 (7...Qa5 8.c3 Be7 9.bc6 bc6 10.Bd3+-) 8.c3 Bd6 9.bc6 1–0. Baer,Cy (1895) – Krause,Volker, RSS4D easy–84, 2008.

4.Be5 d6+- 5.Bb2 a6 6.a4 Bf5 7.e3 g6 8.Nf3 Bg7 9.Nd4 e5 10.Nf5 gf5 11.Qf3 Qd7 12.Qb7 0-0 13.Qf3 ab5 14.Bb5 Qc8 15.Nc3 c5 16.Nd5 Nd5 17.Qd5 Qe6 18.Qe6 fe6 (19.a5 Rfb8+-). hooks – color1972, ChessWorld.net, 2005.

4.Be5 d6+- 5.Bb2 e5 6.e3 Qd7 (6...Be7 7.Nf3+-) 7.Nf3 Ng4 (7...e4 8.Nd4+-) 8.h3 (8.Nc3 Nf6+-) 8...Nh6 (8...Nf6 9.Nc3+-) 9.Bc4 (9.Nc3 f6+-) 9...Be7 (9...e4 10.Nd4 d5 11.Bb3+-) 10.e4 0-0 11.0-0 Kh8 12.d4 a6 13.de5 ab5 14.Bb3 b4 15.Qc1 de5 (15...f6 16.e6 Qe8 17.c3 bc3 18.Nc3+-) 16.Rd1 (16.Qh6 gh6 17.Ne5 Bf6 18.Nd7 Bb2 19.Nf8 Ba1+-) 16...Qe8 17.Be5 f6 (17...Qc6 18.c3+-) 18.Bc7 Bd7 (18...Qg6 19.Kf1+-) 19.Bf4 g5 (19...Ng8 20.Qe3+-) 20.Be3 Qg6 (20...Bc6 21.Nd4 Be4+-) 21.Rd7 Qe4 (21...Rfe8 22.Bd4 Rad8 23.Rb7 Qe4 24.Rb4+-) 22.Nbd2 Qg6 23.Re7 Nf5 24.Rb7 Ne3 25.fe3 h6 26.Rb4 Rfe8 27.Bd5 Re3 28.Ba8 Rf3 29.Rb8 Kh7 30.Bf3 Qf5 31.Be4 Qe4 32.Ne4 Kg6 33.Qf1 f5 34.Qa6 Kh5 35.Rb6 fe4 36.Rh6 1–0. DEFFM – GuestNJHB, freechess.org, 2020.

4.Be5 d6+- 5.Bb2 Bf5 6.c4 (6.e3 e5+-) 6...e6 7.e3 d5 8.d3 (8.cd5!? ed5 9.Qf3 Be4 10.Bf6 Qd6+-) 8...dc4 9.dc4 Bb4 10.Bc3 (better is 10.Nc3 Ne4 11.Nge2 Qf6+-) 10...Qd6? (better is 10...Qd1 11.Kd1 Ne4+-) 11.Qd6 cd6 (11...Bd6 12.Nd2 Rg8+-) 12.Bb4 0-0 (12...0-0-0 13.Nc3+-) 13.Nf3 Rac8 14.Be2 Ne4 15.0-0 d5 16.Bf8 Kf8 (16...Kf8 17.cd5 ed5+-). gabrielecornacchini – peejhunt, net–chess.com, 2001.

4.Be5 d6+- 5.Bf6 gf6 6.g3 b6 (6...d5 7.Bg2+-) 7.Bg2 a5 (7...Rb8 8.c4+-) 8.Bc6 (better is 8.Ba8 Bd7 9.Bc6 Bc6 10.bc6+-) 8...Bd7 9.Ba8 Bb5 (9...Qa8 10.Nf3 Bb5+-) 10.Bf3 Bg7 11.c3 f5 12.Na3 e5 (12...Bd7+-) 13.Nb5 e4 14.Bh5 (14.Bg2 0-0+-) 14...d5 15.Rc1 c6 16.Nd4 Kf8 17.Nf5 (17.Nc6 Qg5 18.e3 Qf6+-) 17...Qg5 18.Ng7 (better is 18.g4!? Qd8+-) 18...Kg7 19.g4 c5 20.e3 (better is 20.Rb1 Rb8+-) 20...d4 21.cd4 Qd5 22.dc5 Qa2 23.cb6 Rd8 24.Rc2 Qa4 25.Rc7 Qc6 26.Rc6 a4 27.b7 (27.b7 Rb8 28.Qa1 Kf8 29.Qf6 Ke8 30.Qf7 Kd8 31.Qc7; 27.Qa1 Kg8 28.Bf7 Kf7 29.Qf6 Ke8 30.Re6 Kd7 31.Qe7 Kc8 32.Qc7) 1–0. ashipham – sniperbay (1620), net–chess.com, 2001.

4.a4 d5 5.e3 (5.Nf3 e5=+) 5...e5 6.g3 (6.b5 ab5 7.ab5 Ra1 8.Ba1 Na5=+) 6...Bg4 7.Bg2?? (better 7.f3 Bf5 8.d3-/+) 7...Bd1-+ 8.Kd1 e4 9.Ne2 (9.f4 Bd6-+) 9...Ne5 10.f4 (10.Nf4 g5 11.Nh3 Nd3-+) 10...Nd3 (better 10...ef3 11.Bf1 Ne4 12.Rg1 fe2 13.Be2-+) 11.Kc2 Nb2 (11...c5 12.bc5 Bc5 13.Nc1-+) 12.Kb2 Qd7 13.Na3 (13.Kc1 c5-+) 13...Bd6 (13...Qa4 14.Nd4 Qd7 15.Nac2-+) 14.h4 (14.Nc2 0-0-+) 14...Qg4 (14...Qa4 15.Nc4 Qd7 16.Bh3-+) 15.Nd4 (15.Rae1 c5 16.Bh3 Qh5 17.bc5 Bc5-+) 15...Qg3 16.Bh3 0-0 (16...Qf2 17.Kc2 Kf8 18.h5-+) 17.Rab1 (17.Rag1 Qh4 18.Nac2 Bf4-+) 17...c5 (better 17...Qf2 18.Kc2 a5 19.Rbf1 Qh4 20.Bf5-+) 18.Nf5 Qf2 19.Nd6 Qd2 (19...cb4 20.Nc2-+) 20.Nc2 cb4 21.cb4 Rfd8 22.Nb7 (22.Rbd1 Qe2 23.Rde1-+) 22...Rd7! 23.Nc5 (23.Bd7 d4 Decoy) 23...Rc7 24.Rhd1 (24.Rbd1 Qf2 25.Rdf1 Qh4-+) 24...Qh2 (24...Qf2 25.a5-+) 25.Rd2 (25.Rh1 Qf2 26.Rbf1 Qh4 27.Nd4-+) 25…Qd2 (25...Qd2 26.Rc1 Rc5-+) 0-1. blitzNbullet (1665) - Reppko (2120), Rated Bullet game, lichess.org, 2014. (=1.c3 Nc6 2.b4 Nf6 3.Bb2)

4.a4 e5 5.Ba3=+.

4.e3 b5 5.Nf3 Bb7 6.Be2 g6 7.d4 e6 8.0-0 Bg7 9.Nbd2 0-0 10.Re1 d6 11.a3 Rb8 12.Rc1 Ne7 13.c4 bc4 14.Nc4 d5 15.Ncd2 Ne4 16.Ne4 de4 17.Nd2 f5 18.g3 Bc8 19.Bf1 c6 20.Bg2 Qc7 21.Nb3 Rd8 22.Nc5 Ra8 23.Qc2 a5 24.Bc3 Bb7?? 25.Nb7 Qb7+/– 26.ba5 Nd5 27.Rb1 Qc7 28.Rec1 Nc3 29.Qc3 Bf8 30.Rb2 Ra5+= 31.Rb3 Ra3?? 32.Ra3+- Ba3 33.Qa3 Qb7 34.Ra1 Ra8 35.Qa8 Qa8 36.Ra8 Kf7 37.Ra6 Kf6 38.Ra1 Kg5 39.Rc1 Kg4 40.h3 (40.h3 Kg5 41.Rc6+-) 1–0. Fournier,Frederic (1950) – espiterman (1920), Active Blind, 2008.

4.e3 e6 5.Nf3 Qe7 6.Be2 g6 7.d4 Bg7 8.Nbd2 0-0 9.0-0 d5 10.a3 Bd7 11.Re1 b6 12.Bd3 Rfb8 13.Qc2 Nd8 14.e4 de4 15.Ne4 Ne4 16.Be4 (16.Re4?! Bc6=) 16...Bc6 17.Bc6 Nc6 18.Rac1 (18.d5 Nd8+/–) 18...Nd8 19.c4 Rc8 20.c5 bc5 21.dc5 Bb2 22.Qb2 Rcb8 23.Qc2 c6 24.Rcd1 a5 25.Rb1 ab4 26.ab4 Ra7 27.Red1 Rba8 28.h3 Ra2 29.Qc1 Qa7 30.Rb2 Rb2 31.Qb2 Qa2?? 32.Qa2 Ra2 33.Rd8 Kg7 34.Kh2 Ra1 35.Rc8 Rc1 36.Rc6 Kf6 37.Rb6 Rc5 38.bc5 1–0. Fournier,Frederic (2030) – def43rte (1680), Active Blind, 2008.

4.e3 g6 5.Nf3 Bg7 6.d4 0-0 7.Bd3 d5 8.Nbd2 Kh8 9.0-0 Re8 10.a3 e6 11.Qc2 Bd7 12.Rfe1 Na7 13.Rac1 b5 14.e4 de4 15.Ne4 Ne4 16.Be4 Bc6 17.Bc6 Nc6 18.Qe4 Ne7 19.Qc2 Ng8 20.Qe2 h6 21.Qc2 Rc8 22.h3 c6 23.Qd2 Nf6 24.Qc2 Nd5 25.Re2 Bf6 26.Rce1 Bg5 27.Ng5 hg5 28.Bc1 Kg7 29.Be3 Ne3 30.Re3 f6 31.Qd2 Qc7 32.g3 1–0. Fournier,Frederic – alexandertgl, Active Blind, 2008.

4.e3 g6 5.Nf3 Bg7 6.d4 e6 7.Bd3 0-0 8.Nbd2 b6 9.a3 Bb7 10.0-0 d6 11.Rc1 Ne7 12.Re1 c5 13.bc5 bc5 14.Qc2 cd4 15.ed4 Qc7 16.Ne4 Ne4 17.Be4 Be4 18.Qe4 d5 19.Qe2 Rab8 20.g3 Rb7 21.Ne5 Be5 22.Qe5?? Qe5–+ 23.Re5 Rfb8 24.Ree1?? Rb2 25.Rb1 Rb1 26.Rb1 Rb1 (26...Rb1 27.Kg2 Rc1–+) 0–1. Fournier,Frederic – espiterman, Active Blind, 2008.

4.e3 a5 5.ba5 (5.Bb5!? ab4 6.Bc6 bc3 7.Nc3 (< 7.Ba8 cb2 8.Nc3 ba1R 9.Qa1 c6–/+; 7.Bc3?! dc6 8.Nf3 Bg4+=) 7...dc6 8.Nf3+=) 5...Ra5= 6.Nf3 d6 7.c4 bc4 8.Bc4 Bb7? (8...e5 9.Bc3 Rc5 10.Qb3+=) 9.Bc3 (9.Qb3 Qa8 10.Bf7 Kd8+-) 9...Ra8? (better is 9...Ra7+=) 10.Qb3+- Ba6?? (better is 10...Qb8 11.Bf7 Kd8+-) 11.Bf7 Kd7 12.Be6 Ke8+- 13.Bc4 d5 14.Ba6 Ra6 15.0-0 e6 16.Bf6 Qf6 17.Nc3 Bd6 18.Qb7 Rb6 19.Qa8 Nb8 20.Qa4 Kf7+/– 21.Rfb1 h5 22.Rb6+- cb6 23.Qa7 Kg6 24.Qb6 Be5 25.Ne5 Qe5 26.a4 h4 27.a5 h3 28.g3 Nd7 29.Qd4 Qf5 30.a6 Qf3? 31.Kf1?? Qg2?? 32.Ke2+- e5?? 33.Qg4 Kh7 34.Qd7 Qh2 35.a7 Qg2 36.Qf5 g6 37.Qf7 Kh6 38.a8Q Ra8+- 39.Ra8 d4 40.Rh8 Kg5 41.ed4 ed4 42.Qd5 Kf6 43.Rf8 Kg7 44.Qf7 Kh6 45.Rh8 Kg5 46.Qf4# 1–0. martin78ns – macieklbn15, kurnik, 2011.

4.e3 a6 5.Nf3 Bb7 6.d4 e6 7.Bd3 d5 8.Nbd2 Bd6 9.a3 Qd7 10.0-0 0-0-0? (better is 10...0-0!?+=) 11.Re1 h6 12.Qc2 Rhf8 13.e4 (13.a4!? Na7 14.ab5 Nb5 15.Ne5 Be5 16.de5+-) 13...de4+/– 14.Ne4 Ne4 15.Be4 f5 16.Bd3 g5 17.h3 g4 18.hg4 fg4 19.Nd2 g3 20.fg3 Bg3= 21.Nf3? Rf3 22.gf3=+ Be1 23.Re1 Ne7 24.Qg2?? Nd5 25.Kf1 Nc3?? 26.Bc3+- e5 27.de5?? Qd3–+ (27...Qd3 28.Kf2 Qc3–+) 0–1. Fournier,Frederic (1865) – odinymaya (1840), Active blind, 2011.

4.Qb3 d5–/+ 5.c4? (5.Na3!?–/+) 5...Nb4 (5...dc4!? 6.Qc4 Be6 7.Qc1 Bb4 8.Nf3–+) 6.a3 (6.Nf3 e4 7.Nd4 dc4 8.Qc4 Be7–+) 6...dc4 7.Qc4 Nbd5 0–1. eburkett – rweigold, net–chess.com, 2007.

4.b5!? Na5 5.Qa4=+.

4.b5 d6?? 5.bc6+- bc6 6.d4 Bg4 7.de5 Be6?? (7...de5 8.Qa4+-) 8.e3 (better 8.ef6 Qf6 9.Qa4+-) 8...de5 9.Be2 (9.Qa4 Rb8 10.Bc1 Bd6+-) 9...e4 (better 9...Qd1 10.Bd1 Rb8+-) 10.Bc4?? (10.Qa4 Rb8 11.Ba3 Ba3 12.Qa3 Rb7+-) 10...c5?? (better 10...Qd1 11.Kd1 Rd8 12.Nd2 Bc4-+) 11.Be6 fe6 (11...Qd1 12.Kd1 fe6 13.Nd2+-) 12.c4 (12.Nd2 Bd6+-) 12...e5 (12...Qd1 13.Kd1 Rb8 14.Kc2+-) 13.Ne2 (13.Qa4 Qd7 14.Qd7 Nd7+-) 13...Bd6 (13...Qd1 14.Kd1 Bd6 15.Nd2+-) 14.Nbc3 c6 (14...Rb8 15.Rb1 Qc8+-) 15.Nd5 (15.Ng3!? Rb8 16.Rb1 0-0+-) 15...0-0?? (better 15...cd5 16.cd5 0-0=) 16.Nf6 Qf6 17.Nc3 (17.0-0 Rab8 18.Bc3 Qe6+-) 17...Qd8 (17...Qf2) 18.Qe2 (18.Ne4 Rb8 19.Qd2 Bc7 20.Qd8 Rfd8+-) 18...Be7 (18...Bc7 19.Rd1 Qh4 20.0-0+-) 19.0-0 Qd3 20.Qe1 (better 20.Rad1 Qe2 21.Ne2+-) 20...Qd2?? (20...Qc4 21.Qe2 Qe2 22.Ne2 Rad8 23.Be5 Rd5+-) 21.Rd1 (better 21.Qd2 Rad8 22.Qc2+-) 21...Qe1?? (better 21...Qb2 22.Rd7 Bh4=) 22.Rfe1+- Rad8 (22...Rab8 23.Ba3+-) 23.Rd8 Rd8 24.Rc1 (24.Ne4 Bf6+-) 24...Rf8 (24...Rd2 25.Ba1+-) 25.Ne4 Rf6 (25...Bf6+-) 26.Nc5! Rf5?? (26...Bc5 27.Be5 Combination) 27.Ne6 (better 27.Ne4!? Rh5+-) 27...Rf4 (27...Kf7 28.g4 Rf6 29.Ng5 Ke8+-) 28.Nf4 (28.Nf4 ef4 29.ef4+-) 1-0. chessovolution - arvinnn1387, Rated UltraBullet game, lichess.org, 2021.

4.b5 Ne7 5.c4=+.

4.e3 d5 5.a3 (5.b5 Na5=+) 5...Be6 (5...Bd6 6.c4–/+) 6.Be2 (6.Bb5 Bd6=+) 6...Be7 (6...e4 7.Qa4–/+) 7.Nf3 (7.b5 Na5=+) 7...0-0 (7...e4 8.Ng5 Bf5 9.b5–/+) 8.0-0 (better is 8.b5 e4 9.bc6 ef3 10.Bf3 bc6 11.0-0=+) 8...Qd7 (8...e4 9.Ng5=+) 9.d4 (better is 9.b5!? Na5 10.Ne5+=) 9...e4= 10.Ne5 Ne5 (10...Qd6 11.c4=) 11.de5 Ng4 12.c4 f6?? (better is 12...dc4 13.Qd7 Bd7 14.Bc4 c6=) 13.cd5+- Ne5 (13...Nf2 14.Rf2 (14.Kf2?! Bd5 15.Nc3 fe5 16.Ke1 Rf1 17.Bf1 c6+-; 14.de6?! Nd1 15.ed7 Nb2+-) 14...Bd5 15.ef6 Bf6 16.Bf6 Rf6 17.Rf6 gf6 18.Nc3+-) 14.de6 Qe6 15.Be5 Qe5 16.Nd2 Rfd8 17.Qb3 Kh8 18.Bg4?? Rd2–/+ 19.Rac1 Bd6 20.g3 Rd3 21.Qf7 Rf8 22.Qa2–/+ f5 23.Be2 Rd5?? 24.Bc4+= f4?? 25.ef4+- Qh5 26.Bd5 Rf4 27.gf4 Bf4?? 28.f3+- Bc1 29.Rc1 Qd5?? 30.Qd5 (30...h6 31.Rc7 ef3 32.Rc8 Kh7 33.Qd3 g6 34.Qd7) 1–0. rriicchhhh – claudiu087, Live Game Caissa's Web, 2005.

4.e3 d6 5.d4 ed4 6.ed4 Be6 7.Be2 Be7 8.Nf3 Qd7 9.0-0 0-0 10.Nbd2 b6 11.Bd3 a5 12.a3 ab4 13.ab4 Ra1 14.Qa1 b5? (14...Rd8 15.Re1 Re8 16.Bb5+-) 15.Re1 (15.Bb5 Rb8 16.Qa4 Rb6+-) 15...d5 (15...Nd8 16.Ng5=) 16.Qb1 (16.Bb5 Qd6+/–) 16...Nb8 17.Ne5 c6?? (better is 17...Qe8+/–) 18.Nd7+- Bd7 19.Bh7! Nh7 20.Re7 Re8 21.Re8 Be8 22.Nf3 Nf6 23.Ne5 c5 24.bc5 Ne4 25.Qe1 Nd7 26.Nd7 Bd7 27.f3 Nf6 28.Bc1 Bg4 29.fg4 Ng4 30.h3 Nf2 31.Qf2 (31.Qf2 b4 32.c6 f5 33.c7 g6 34.c8Q Kf7 35.Qd7 Kg8 36.Qe3 bc3 37.Qee8) 1–0. Fournier,Frederic (1945) – rebotador (1845), Active, 2008.

4.e3 d6 5.Nf3 Bd7 6.d4 Qe7 7.Bd3 0-0-0 (7...e5 8.b5 e4 9.bc6 Bc6 10.c4=) 8.Nbd2 g6 9.0-0 Bg7 10.a3 Rdf8 11.Re1 Ne8 12.Qc2 f5 13.e4 fe4 14.Ne4 Nf6 15.Nf6 Bf6 16.Re2 Bg7 17.Rae1 Rf7 (17...Rf3 18.gf3 Qg5 19.Kh1=) 18.c4 (18.b5 Nd8+/–) 18...Rhf8 (better is 18...Rf3 19.d5 Ne5 20.Be5 Be5 21.gf3 Qg5 22.Kh1 Qf4 23.Re5 de5=+) 19.Qb1?? (19.d5 Nd8+/–) 19...Nb8?? (19...Rf3 20.d5 Ne5 21.Be5 Be5 (21...de5?! 22.gf3 ed5 23.cd5=) 22.gf3 Qg5 23.Kh1 Qf4 24.Re5 Qf3 (24...de5?! 25.Be4–/+) 25.Kg1 de5–+) 20.d5 Bb2 21.Qb2 ed5?? 22.Re7+- Re7 23.Re7 dc4 24.Bc4 Nc6 25.Re1 Nd8 26.Bb3 Bc6 27.Rd1 Bf3 28.gf3 Rf3 29.Kf1 Rf8 30.Bd5 c6 31.Bg2 d5 32.a4 Nf7 33.b5 c5 34.a5 c4 35.b6 a6 36.Rc1 Nd6 37.Qd4 Nb5 38.Rd1 Nd4+- 39.Rd4 Kd7 40.Bd5 Kc8 41.Rc4 (41.Rc4 Kb8 42.Rc7+-) 1–0. Fournier,Frederic – socsoc (2005), Active Blind, 2008.

4.e3 d6 5.Nf3 Be7 6.d4 Bd7 7.Bd3 Rb8 8.Nbd2 a6 9.0-0 b5 10.a4 ba4 11.Qa4?? (better is 11.Ra4 a5 12.b5+=) 11...Na7?? (better is 11...Nb4 12.Qb4 Rb4 13.cb4 Bb5 14.Bb5 ab5–+) 12.Qc2+- c5 13.bc5 dc5 14.Rfb1 cd4 15.cd4 Rb6 16.Qc1 Qb8 17.Ba3 Rb1 18.Rb1 Qd8? 19.Be7 Qe7 20.Qf1?? 0-0 21.Ba6+- Nc6 22.Bd3 e5 23.de5 Ne5 24.Ne5 Qe5 25.Nf3 Qe7 26.Nd4 Rc8 27.Be2 h6 28.Bf3 Rc6?? 29.Nc6+- Bc6 30.Bc6 Kh7 31.Bf3 g6 32.Qc1 Kg7 33.h3 Nh5 34.Bh5 gh5 35.Qb2 Kh7 36.Rc1 Qg5 37.Qc2 (37.Qc2 Kg7 38.Qc3 Kh7 39.Qc7+-) 1–0. Fournier,Frederic (1960) – zandro (1805), Active, 2008.

4.e3 Qe7 5.Nf3 b6 6.d4 Bb7 7.Bd3 0-0-0 8.Nbd2 Kb8 9.a3 g6 10.0-0 Bg7 11.Re1 h6 12.Rc1 Rdg8 13.e4 Ne8 14.Qc2 Rf8 15.e5 (15.c4 f5+/–) 15...Rh7 (15...g5 16.d5 ed5 17.c4+=) 16.Ne4 Rhh8 17.Ned2 g5 18.h3 f5 19.ef6 Rf6 (< 19...Bf6 20.b5 Nd8 21.Ne4+=; < 19...Qf6 20.c4+=) 20.Ne4 Rhf8? (better is 20...Rf4+=) 21.Nf6+- Rf6 22.a4 Nd8 23.a5 Qf7? 24.ab6 ab6 25.Ra1 Bf3 26.gf3 Rf3 27.Kf1 Rf2?? 28.Qf2 Qf2 29.Kf2 Bd4 30.cd4 Nf6 31.Ke2 Ng4 32.hg4 Nf7 33.Kd1 Nd6 34.Rf1 Nf5 35.gf5 ef5 36.Bf5 Kb7 37.Re1 c6 38.d5 Kc7 39.dc6 dc6 40.Rc1 b5 41.Bd4 (41.Bd4 c5 42.Rc5 Kb7 43.Re7 Kb6 44.Rc8 Ka6 45.Ra8; 41.Re7 Kd8 42.Rd7 Ke8 43.Rc6 h5 44.Rc8) 1–0. Fournier,Frederic – Nisoigy, Active Blind, 2008.

4.Qa4 a5 (4...e6 5.d4-/+) 5.d4 c6 6.a3 b5 7.cb5 cb5 8.Qb3 Nc6 9.d5 (9.Qb5?? Rb8 10.Qd3 Rb2-+) 9...a4 10.Qd3 Nb8 (10...Na5 11.Bf6 gf6 12.Nd2=+) 11.Nc3 (11.e4 Ba6=) 11...Ba6=+ 12.e4 (12.Qd2!?=+) 12...b4!-/+ 13.Nb5 (13.ab4 Bd3 Discovered attack) 13...b3 14.f3 e6 15.Rc1 Bb5 16.Qb5 Bd6?? (16...Ra5 17.Qb7 A) 17...ed5?? 18.Rc8 Nc6 19.Bb5+- (worse 19.Rd8 Nd8 20.Qb6 Rc5+-); B) 17...Rc5=+) 17.Qb7+/- Na6 18.e5 (18.Ba6 0-0 19.Qb5 ed5+=) 18...Nd5 (18...Qa5!? 19.Kd1 0-0 20.ef6 Bf4=) 19.ed6+/- (19.Ba6 Qa5 20.Ke2 A) 20...Qa6? 21.Qa6 Ra6 22.Rc8 (22.ed6 0-0=+) 22...Ke7 23.Rh8+- (23.ed6?! Rd6 24.Rh8 Nf4 25.Kf2 Nd3 26.Kg3 e5+=); B) 20...0-0 21.ed6 Ra6=+) 19...0-0 20.Kf2 (better 20.Qb5!? Nb8 21.Ne2+/-) 20...Qg5= 21.Ba6 Qe3 22.Kg3 Qg5 23.Kf2 Nf4?? (better 23...Qd2 24.Ne2 Qb2=) 24.g3 (better 24.Bf1 Qa5 25.Rd1 Qc5 26.Ke1 Qe3 27.Be2 Qc5+-) 24...Nd5? (24...Qa5 25.gf4 Qd2 26.Ne2 Qb2+-) 25.f4 (25.Ne2 Qd2 26.Bd4 Qa2+-) 25...Qf5 (25...Qd8 26.Bd3+-) 26.Nf3 g5 (26...Nf6 27.Bf6 Qf6 28.Ne5+-) 27.Ng5 Nf4 (27...h6 28.Nf3 Nf6 29.Bf6 Qf6+-) 28.gf4 Qf4 (28...Rfd8 29.Rhg1 Kf8 30.Bf6+-) 29.Nf3 f6 30.Qd7 Rf7 31.Rc8 Rc8 (31...Kg7 32.Rg1 Qg4 33.Rg4 Kh6 34.Qf7 Rc8 35.Rh4) 32.Rg1 Qg5 33.Rg5 fg5 34.Qc8 Rf8 35.Qe6 Rf7 36.Kg3 (36.Qe8 Rf8 37.Bc4) 36...h6 (36...h5 37.Qe8 Kh7 38.Qf7 Kh6 39.Qg7) 37.Kg4 (37.Qe8 Rf8 38.Qg6) 37...Kf8 (37...h5 38.Kg5 h4 39.Qe8 Rf8 40.Qg6) 38.Qh6 (38.Qc8) 38...Ke8 39.Qg6 (39.Qe6 Kd8 40.Qc8) 39...Kf8 (39...Kd8 40.Qe6 Rf4 41.Kh5 Rh4 42.Nh4 gh4 43.Qe7) 40.Qh6 (40.Ng5?! Rf4 41.Kg3 Rf3 42.Kh4 Rf4 43.Kh3 Rf3 44.Kg2 Rf2 45.Kh1 Rf1 46.Bf1=) 40...Ke8 41.Qh8 (41.Qe6 Kd8 42.Qc8) 41...Kd7 (41...Rf8 42.Bb5 Kf7 43.Ng5 Kg6 44.Qg7) 42.Qc8 (42.Bb5 Kd6 43.Qe5) 42...Kd6 43.Be5 Ke7 44.Qc7 Kf8 (44...Ke8 45.Bb5 Rd7 46.Qd7 Kf8 47.Qe8) 45.Qd8 1-0. chixuaxua (2150) - babaei (1710), Rated Classical game, lichess.org, 2014.

4.d4 e6 (4...d5 5.e3–/+) 5.Nf3 (5.a3 Na6–/+) 5...b6 (5...d5 6.e3–/+) 6.Nc3 (6.a3 Nc6=+) 6...Bb7 7.a3 Bf3 (7...Na6 8.e3=+) 8.ef3 Nc6 9.g3 (9.d5 Ne5=+) 9...d5 (better is 9...Be7–/+) 10.cd5 Nd5 11.Bg2?? (11.Bb5 Nde7 12.d5 ed5 13.Nd5+-) 11...Na5 (11...Nc3 12.Bc3 Qd7 13.0-0–/+) 12.f4 Nc4?? (better is 12...c6–/+) 13.Qa4+- Qd7 14.Qc4 c6 15.0-0 b5 16.Qd3 Rb8 17.Nd5 cd5 18.Rfc1 Bd6 19.Rc2 0-0 20.Rac1 b4 21.ab4 Bb4 22.Ba3 Ba3 23.Qa3 h6 24.Rc7 Qb5 25.Ra7 Qb6 26.Rcc7 Qd4 27.Qa6 Rb2+/– 28.Qf1 Rd2? 29.Ra1 Rb8+/– 30.Rac1?? Rbb2–+ (30...Rbb2 31.Kh1 Rf2–+) 0–1. alaamattar (2205) – flgs (2075), net–chess.com, 2005.

4.e3 Nc6–/+.

(--> 1.b4 d5 2.Bb2 Nf6) .

3.a3 Nc6 4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3).

3.a3 d4 4.e3 e5 (--> 1.b4 e5 2.a3 d5 3.Bb2 d4 4.e3 Nf6).

3.a4 e5 4.Be5 Bb4 (--> 1.b4 d5 2.a4 e5 3.Bb2 Bb4 4.Be5 Nf6).

3.b5 a5 4.a4 c6 5.e3 e6 6.c4 Be7 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 a5).

3.b5 Bf5 4.e3 e6 5.c4 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Nbd7 6.c4).

3.b5 g6 4.a4 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 d5).

3.e3 Nc6 4.a3 Bf5 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nc6).

3.e3 Nc6 4.b5 Na5 (--> 2…Nc6 3.b5 Na5 4.e3 d5).

3.e3 Nc6 4.b5 Nb8 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 Nf6).

3.e3 Bd7 4.c4 e6 5.b5 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 Bd7).

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

3.Nf3 a6 4.e3 e6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3).

3.Nf3 b6 4.e3 Bb7 5.d4 e6 6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.d4).

3.f4 Bf5 4.e3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 e6 4.f4 Nf6).

3.g3 c6 4.Bg2 g6 5.Nf3 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d5 6.0-0 c6).

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

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

4.e3 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a3).

4.e3 Bg4 5.Nf3 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.a3).

4.e3 e5 (---> 1.b4 e5 2.a3 d5 3.Bb2 Nd7 4.e3 Ngf6).

4.Nf3 c5 5.bc5 Nc5 6.e3 e6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 c5 6.bc5 Nc5).

4.e3 a5 5.b5 c6 6.bc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.bc6).

4.e3 c5 5.b5 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).

4.e3 c5 5.bc5 Bc5 6.d4 Bd6 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Bd6 7.e3).

4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5).

4.d3 Nbd7 5.Nf3 e6 6.Nbd2 (--> 1.b4 d5 2.Bb2 Bf5 3.d3 Nd7 4.Nd2 Ngf6 5.Ngf3 e6 6.a3).

4.d3 e6 5.e3 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.d3).

4.e3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.a3).

4.e3 Nbd7 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7).

4.Nf3 c6 5.e3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.a3).

4.Nf3 Nc6 5.e3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nc6).

4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 d6).

4.e3 Bg7 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.a3).

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

4.a4 Bd7 5.e3 e6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd7).

4.a4 e6 5.e3 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).

4.a4 Bf5 5.e3 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.a4 Bf5 5.b5).

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

4.a4 e5 5.e3 (---> 1.b4 e5 2.b5 d5 3.Bb2 Nd7 4.e3 Ngf6 5.a4).

4.e3 e5 5.c4 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 Nf6 5.c4 Nbd7).

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

4.a4 a6 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).

4.a4 a6 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).

4.e3 Bd6 5.a4 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.a4).

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.d3).

4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 d5 4.d3).

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

4.e3 Bd6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.d4).

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

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

4.b5 Nbd7 5.Nf3 e6 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3 Nbd7).

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

4.a4 e6 5.b5 Be7 6.Nf3 0-0 7.Be2 c6 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

4.c4 e6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.c4).

4.c4 e6 5.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.c4).

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 a6 4.e3).

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

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

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

4.c4 Nbd7 5.Nf3 e6 6.a3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

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

4.c4 e6 5.a3 Bd6 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 0-0 6.c4 c6).

4.c4 e6 5.a3 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.c4 e6 5.b5 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

4.c4 Bf5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 c6).

4.c4 Bf5 5.Nf3 e6 6.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3) .

4.c4 g6 5.Nf3 Bg7 6.d4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5).

4.Nf3 e6 5.a3 Bd6 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6).

4.Nf3 e6 5.a3 Bd6 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

4.Nf3 e6 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 Bg4 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

4.Nf3 Bg4 5.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 c6).

4.a3 e5 5.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6).

4.a4 e5 5.b5 (---> 1.b4 e5 2.b5 d5 3.Bb2 Nd7 4.e3 Ngf6 5.a4).

4.c4 e6 5.a3 Be7 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 Nbd7).

4.Nf3 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7).

4.f4 e6 5.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Nbd7 5.f4) .

4.f4 e6 5.b5 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.f4 Nbd7).

5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).

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

5.b5 c5 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.b5 c5 6.c4 b6 7.Be2 Bd6 8.a4 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.a4 b6).

5.b5 c5 6.Be2 Bd6 7.c4 0-0 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.b5 c5 6.Be2 Bd6 7.c4 Qc7 8.d3 0-0 9.Nbd2 b6 10.0-0 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.d3 Bb7 10.Nbd2 Qc7).

5.b5 Bd6 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3).

4.a3 (--> 1.b4 e5 2.a3 d5 3.e3 Nf6 4.Bb2).

4.a3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.e3 Nf6).

4.a3 Bd6 5.c4 dc4 6.Bc4 Nbd7 7.Nf3 0-0 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 dc4 7.Bc4 0-0).

4.a3 Bd6 5.c4 c6 6.Nf3 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.e3 Nf6 5.c4 c6 6.Nf3).

4.a3 Nbd7 (--> 1.b4 e5 2.a3 d5 3.Bb2 Nd7 4.e3 Ngf6).

4.a3 Nbd7 5.c4 c6 6.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

4.b5 d4 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.e3 Nf6).

4.b5 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 Nf6).

4.b5 Nbd7 (--> 1.b4 e5 2.b5 d5 3.Bb2 Nd7 4.e3 Ngf6).

(--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 d5).

5.c4 0-0 6.cd5 Nd5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.cd5 Nd5).

5.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nf3 d5 5.e3).

5.Nf3 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 0-0 5.Nf3 d5).

5.Nf3 0-0 6.c4 c5 7.a3= Ba5 8.cd5 Nd5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.cd5 Nd5 7.Nf3 c5 8.a3 Ba5).

5.Nf3 0-0 6.Be2 Nc6 7.Bb2 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6.Be2 0-0 7.Nf3).

5.Nf3 0-0 6.Be2 Nc6 7.Bb2 Bf5 8.0-0 Re8 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6.Be2 0-0 7.Nf3 Re8 8.0-0 Bf5).

4.a3 a5 5.b5 c5 6.c4 Nbd7 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 c5 6.e3 Nbd7 7.c4).

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 a6 5.Nf3 Nbd7 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a6).

4.a3 c5 5.b5 Bd6 6.Nf3 Nbd7 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4 Nbd7).

4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

4.a3 c5 5.bc5 Bc5 6.Nf3 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 c6 5.Nf3 Nbd7 6.c4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

4.a3 Bd6 5.c4 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 0-0 6.c4).

4.a3 Bd6 5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6 5.a3 Bd6).

4.a3 Bd6 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3).

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

4.a3 Be7 5.c4 c6 6.c5 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.c5).

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

4.a3 Be7 5.Nf3 0-0 6.c4 c5 7.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 c5 6.bc5 Bc5 7.c4 0-0).

4.a3 Be7 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

4.b5 a5 (without 5.ba6) (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5).

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

4.b5 a5 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 a5).

4.b5 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6).

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

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.bc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.bc6).

4.b5 a6 5.a4 c5 6.c4 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.b5 b6 5.Nf3 Bb7 6.c4 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7).

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

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

4.b5 c6 5.a4 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 c6 8.c4).

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

4.b5 c6 5.a4 Be7 6.Nf3 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 Nbd7 5.Nf3 c5 6.c4 b6 7.d3 Bd6 8.Nbd2 0-0 9.Be2 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).

4.b5 Nbd7 5.Nf3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 Nbd7).

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 Bd6 6.Nf3 Nbd7 7.Be2 0-0 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.c4 Be7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.c4 Be7 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7).

5.Nf3 Bd6 6.c4 b6 7.a4 0-0 8.Be2 Bb7 9.0-0 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.a4 Bb7).

5.Nf3 Bd6 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

5.Nf3 Bd6 6.c4 Nbd7 7.d3 0-0 8.Nbd2 b6 9.Be2 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.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 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 Bd6 6.c4 Nbd7 7.Be2 0-0 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.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 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 c5 5.c4 Nbd7 6.Nf3).

5.Nf3 Nbd7 6.Be2 Bd6 7.0-0 0-0 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).

5.Nf3 Nbd7 6.Be2 Bd6 7.0-0 0-0 8.c4 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 Be7 6.Be2 b6 7.0-0 Bb7 8.c4 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).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6).

5.c4 0-0 6.Nf3 c5 7.Be2 Nbd7 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.c4 a5 6.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3 Bd6 6.c4).

5.c4 c5 6.Nf3 Nbd7 7.Be2 0-0 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.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 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2).

5.Nf3 c5 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

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.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 Nbd7).

5.f4 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Bd6) .

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

5.c4 c6 6.a4 a6 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 a6).

5.c4 c6 6.a4 c5 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 c5).

5.Be2 0-0 6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 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.Nf3 0-0 6.c4 dc4 7.Bc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

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

5.Nf3 0-0 6.c4 c6 7.Be2 a6 8.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

5.Nf3 0-0 6.Be2 c5 7.c4 Nbd7 8.0-0 b6 9.a4 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.a4 Nbd7).

5.Nf3 c5 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

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

(--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6) .

4.b5 e6 5.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 e6 5.b5).

4.b5 e6 5.Nf3 c5 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 c5 6.c4).

4.c4 dc4 5.Bc4 e6 6.b5 Nbd7 7.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 Nbd7 7.b5).

4.c4 dc4 5.Bc4 e6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 dc4 5.Bc4 Nbd7 6.Nf3 e6).

4.c4 c6 5.c5 e6 6.Nf3 Be7 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7 7.Be2 Be7).

4.c4 c6 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.c4).

4.c4 c6 5.Nf3 Nbd7 6.Be2 e6 7.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.Be2).

4.c4 c6 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.c4 Nbd7 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 Nbd7 5.c4).

4.c4 e6 5.b5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 e6 5.b5).

4.c4 e6 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4).

4.c4 e6 5.Nf3 Nbd7 6.a3 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7).

4.d4 e6 5.a3 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.d4).

4.Be2 Nbd7 5.Nf3 e6 6.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.Be2).

4.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3) .

4.Nf3 c6 5.c4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.Nf3 h6 5.b5 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 h6).

4.Nf3 h6 5.c4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 h6).

5.c4 dc4 6.Bc4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 Nbd7).

5.c4 dc4 6.Bc4 e6 7.b5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 dc4 5.Bc4 e6 6.b5 Nbd7 7.Nf3).

5.c4 c6 6.b5 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.b5 Nbd7).

5.c4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7) .

5.c4 e6 6.a3 a5 7.c5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7 6.c5 a5 7.a3).

5.c4 e6 6.a3 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7).

5.c4 e6 6.b5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Nbd7 6.c4).

5.c4 e6 6.c5 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7).

5.d4 e6 6.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.d4).

5.Be2 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.Be2 Nbd7).

5.Be2 e6 6.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.Be2).

5.Be2 e6 6.b5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Nbd7 6.Be2).

(--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6).

5.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3).

5.a3 Bd6 6.c4 c6 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.Be2 Bd6).

5.a3 Nbd7 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7 6.a3).

5.a3 Nbd7 6.c4 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7).

5.a3 Nbd7 6.Be2 Bd6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Bd6 6.Be2 Nbd7).

5.b5 Bd6 6.c4 dc4 7.Bc4 Nbd7 (---> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 Nbd7 7.b5 Bd6).

5.b5 Bd6 6.c4 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.b5 Bd6).

5.b5 Be7 6.c4 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.b5 Be7).

5.b5 h6 6.Be2 Bd6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.b5 Bd6 6.Be2 h6).

5.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4).

5.c4 dc4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4).

5.c4 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

5.c4 c6 6.c5 Be7 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7 7.Be2 Be7).

5.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7).

5.c4 Nbd7 6.c5 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7).

4.Qc1 (--> 1.b4 d5 2.Bb2 Bg4 3.Qc1 Nf6 4.e3).

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3) .

4.Nf3 e6 5.b5 Bd6 6.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5 Bd6).

4.Nf3 e6 5.b5 Nbd7 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5).

4.Nf3 e6 5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3 e6).

(--> 1.b4 Nf6 2.Bb2 g6 3.e3 d5) .

4.a3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 d5).

4.a3 Bg7 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.a3).

4.b5 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 d5).

4.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 g6).

4.c4 c6 5.a4 Bg7 6.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.a4 d5).

4.c4 c6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d5).

4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d5).

4.c4 Bg7 5.cd5 0-0 6.Nf3 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d5 6.cd5).

4.c4 Bg7 5.Nf3 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.c4).

4.c4 Bg7 5.Nf3 0-0 (--> 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d5).

4.Be2 Bg7 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2).

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5).

5.c4 0-0 6.d4 c6 7.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nbd2).

5.c4 0-0 6.d4 Bg4 7.Nbd2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nbd2 Bg4).

5.c4 dc4 6.Bc4 0-0 7.d4 (--> 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d5 6.d4 dc4 7.Bc4).

5.c4 c6 6.a4 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.a4 d5).

5.c4 c6 6.d4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5) .

5.c4 c6 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d5).

5.c4 e6 6.d4 0-0 (--> 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d5 6.d4 e6).

5.c4 e6 6.d4 0-0 7.Nbd2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nbd2 e6).

5.d4 0-0 6.Nbd2 c6 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nbd2).

5.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2 0-0).

(--> 1.b4 c6 2.Bb2 d5 3.Nf3 Nf6).

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

4.e3 e6 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.e3 Bf5 5.c4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.a3 Bf5 5.g3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.Nf3 e6 4.g3 Nf6 5.a3 a5).

4.b5 Nb8 5.e3 (--> 1.b4 d5 2.Bb2 Nc6 3.b5 Nb8 4.e3 Nf6 5.Nf3).

(--> 1.b4 d5 2.Bb2 Nd7 3.Nf3 Ngf6).

4.d4 e6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.d4).

4.e3 c6 5.c4 Qc7 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Qc7 5.c4 Nbd7).

4.e3 e6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).

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

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6).

4.a3 a5 5.b5 c5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.Nf3).

4.a3 a5 5.b5 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

4.a3 b6 5.e3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 b6).

4.a3 c5 5.b5 a6 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 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 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 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 0-0).

4.a3 Be7 5.e3 b6 6.c4 Ba6 7.b5 Bb7 8.a4 (---> 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.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.e3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3 Bd6).

4.b5 Bb4 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bb4 5.Nf3).

4.b5 c5 5.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.Nf3).

4.b5 c5 5.c4 Be7 6.e3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7).

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

4.b5 c5 5.e3 Bd6 6.c4 0-0 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

4.b5 c5 5.e3 Bd6 6.c4 Nbd7 7.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

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.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 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 Be7 5.e3 h6 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 h6).

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

(--> 1.b4 d5 2.Bb2 Bf5 3.Nf3 Nf6) .

4.d3 e6 5.a3 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nbd7 6.d3).

4.e3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3) .

4.e3 e6 5.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3).

4.e3 e6 5.a3 Nbd7 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nbd7 6.a3).

4.e3 e6 5.a3 Nbd7 6.Be2 Bd6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Bd6 6.Be2 Nbd7).

4.e3 e6 5.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4).

4.e3 e6 5.c4 c6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.g3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.Nf3 e6 4.g3 Nf6).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.Nf3).

4.e3 Nbd7 5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.c4 Nbd7).

4.e3 e6 5.b5 Bd6 6.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5 Bd6).

4.d4 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 d5).

4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5) .

4.e3 Bg7 5.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d5).

4.e3 Bg7 5.c4 c6 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d5) .

4.g3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 d5).

4.g3 Bg7 5.Bg2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d5).

3.a3 Nb6 4.e3 d6 5.c4 e5 6.Qc2 N8d7 (6...Nc6 7.Nf3=) 7.d4 ed4 8.ed4 (8.Bd4 f6=) 8...Nf6 (8...Qe7 9.Kd1=) 9.Bd3 Bg4 (9...c6 10.Nd2+=) 10.Ne2 Be2 (10...Be7 11.d5+=) 11.Be2 Be7 (11...c6 12.0-0+=) 12.Nd2 (12.d5 0-0+/–) 12...0-0 13.0-0 d5 14.c5 Nc8 (14...Nbd7 15.Qf5+=) 15.a4 (15.Rfe1 c6+/–) 15...c6 (15...Re8 16.Rae1+/–) 16.Nf3 Ne4 (16...Re8 17.Ne5+/–) 17.Bd3 f5 18.Ne5 g6 19.f3 Ng5 20.b5 Qc7 21.Rfe1 Bf6 22.Qf2 (22.Re2 Ne6+/–) 22...Ne7 23.Bc1 Ne6 24.f4 Ng7 (24...Rfe8 25.Bb2+/–) 25.Bd2 Ne8 (25...Ne6 26.Bc3+/–) 26.Qe2 (26.Re3 Bg7+/–) 26...Ng7 27.Qf2 Nh5 (27...Ne8 28.Re2 Bg7+/–) 28.h3 (28.Re2 Ng7+/–) 28...Bg7 29.Reb1 (29.a5 Nf6+/–) 29...Nf6+= 30.b6 (30.Qe3 Ne4+=) 30...ab6 31.Rb6 Nc8 32.Rb3 Ne4 33.Qe1 (33.Qe3 Ra7+=) 33...Be5 (33...Ra7!?+=) 34.fe5+/– (worse is 34.de5 Nc5 35.Rba3 Re8+=) 34...Nd2 35.Qd2 Rf7 36.a5 Kg7 37.h4 Qd8 38.Qe1 Rc7 39.Bc2 Re7 40.h5! Kf7? (40...gh5 41.Rg3 Double attack (41.Bf5 Deflection)) 41.Qh4+- Qg8 (41...Qf8 42.hg6 hg6 43.Qf6 Ke8 44.Qg6 Kd8 45.Bf5+-) 42.Qf6 Ke8 43.Rb7!! Re6 (43...Rb7 44.Qc6 Double attack (44.Qc6 Deflection; 44.Qc6 Decoy)) 44.Qg5 (44.Rg7 Rf6 45.Rg8 Rf8 46.Rf8 Kf8+-) 44...Ne7 (44...Re7 45.Ba4 Re6+-) 45.a6 Kf7 (45...h6 46.Qf4 g5 47.Qf2+-) 46.Rab1 (46.Re7 Kf8 47.Rb7 h6 48.Qh6 Ke8+-) 46...h6 (46...Re8+-) 47.hg6 Qg6 48.Qg6 (better is 48.Qf5! Qf5 49.Bf5 Ra6+-) 48...Rg6 (48...Kg6 49.a7 Kg5+-) 49.Bf5 Rg5 (49...Rgg8 50.a7 Rgf8 51.Bg4+-) 50.Rf1 Kf8 (50...Rf5 51.Rf5 Ke8+-) 51.Be6 (51.Be6 Kg7 52.Re7 Kg6 53.Rf6 Kh5 54.Rh7+-) 1–0. Koerner,Helmut (1725) – Weigelt,Reinhard (1850), 6th Berlin–ch Seniors, 2010.

3.a3 Ne3?? 4.fe3 Nc6 5.Nf3 d5 6.d3 e6 7.e4 (7.Nbd2 a5 8.b5 Na7+-) 7...Bd6?! (7...de4 8.de4 Qd1 9.Kd1 Bd7+-) 8.ed5 ed5 9.Nd4 (better 9.Bg7 Rg8 10.Bb2+-) 9...Qh4+/- 10.g3 Bg3 11.hg3 Qg3?? (better 11...Qh1 12.Nc6 Bh3+-) 12.Kd2+- Nd4 13.Kc1 (better 13.Bd4 f6 14.Rg1+-) 13...Qg5 (13...Nf5+/-) 14.e3 (better 14.Qd2 Qd2 15.Kd2+-) 14...Nb3?? (better 14...Qe3 15.Qd2 Qd2 16.Kd2 Nf5+=) 15.cb3+- Qe3 16.Qd2 (16.Nd2 Bf5+-) 16...d4 (16...Qd2 17.Kd2 f6 18.Nc3+-) 17.Qe3 de3 18.Kd1 (18.Bg7 Rg8 19.Bh6 Rg3+-) 18...Be6 (18...f6 19.Ke2+-) 19.Ke2 (better 19.Bg7!? Rg8 20.Bd4 Rd8 21.Be3 Bb3 22.Kd2 Rg7+-) 19…0-0-0 0-1. muhammadaudii - PuroNorteCarnale (2055), Daily UltraBullet Arena, lichess.org, 2020.

3.a3= e5 4.Be5+/– Nc6 5.Bb2 d6 6.Nf3 Be7 (6...Nb6!?+/–) 7.Bg7+- Rg8 8.Bb2 f5 (8...Bf5 9.e3+-) 9.e3 Be6 10.b5 Na5 11.Nd4 Qd7 12.Qh5 Kd8 13.Nc3 Nc3 14.Bc3 Nc4 15.Qh6 Bd5 16.Qh7 f4 17.e4 Re8 18.Be2 Bg8 19.Qh6 Rf8 20.Nf5 Nb6 21.Bg7 Rf7 22.Qh8 Qe8 23.Bh5 d5 24.e5 Kd7 25.Nd4 Nc4 26.Bg4 Kd8 27.Ne6 Kd7 28.Nc5 (28.Nc5 Kd8 29.Nb7#) 1–0. Woelfelschneider,Peter – Hoferichter, 2008.

3.a3= Nf6 4.Nf3=.

3.b5 a5 4.c4 Nf4 5.e3 Ne6 6.Nf3 c6 7.a4 cb5 8.cb5 d5 9.Be2 Nd7 10.0-0 Nf6 11.h3 g6 12.Nc3 Bg7 13.d4 0-0 14.Ba3 b6 15.Bd3 Bb7 16.Ne2 Rc8 17.Rc1 Qd7 18.Ng3 Ne4 19.Qb3 Kh8 20.Rc8 Rc8 21.Rc1 Rc1 22.Bc1 Nc7 23.Ba3 Ne8 24.Be4 de4 25.Ng5 e6 26.N5e4 f5 27.Ng5 Bd5 28.Qc3 Qb7 29.f3 h6 30.e4 hg5 31.ed5 Qd5 32.Bb2 Qd6 33.Ne2 Nc7 34.Qc6 Qc6 35.bc6 Kg8 0–1. Abdullaevich (1650) – Sorka108 (1680), lichess.org, 2017.

3.b5 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Nd5).

3.b5 f6 4.e4 Nb6 5.a4 d6 (5...d5 6.a5 Nc4 7.Bc4 dc4 8.Na3+=) 6.a5 N6d7 7.Bc4 (7.Nh3 g6+-) 7...a6 (7...Ne5 8.Bb3 a6 9.d4+-) 8.Nc3 (8.d4 ab5 9.Qh5 g6 10.Qb5 c6+=) 8...ab5 9.Qh5 g6 10.Qb5 Nc6? Attacking the isolated pawn on a5 (better 10...c6 11.Qb3 Nc5=) 11.Nf3+- Nde5 12.Ne5 (12.Ne5 de5 13.a6+-) 1–0. DEFFM – GuestCNLH, freechess.org, 2019.

3.b5 Nf6 A) 4.e3 A1) 4...d5 5.Nf3 (5.Be2 a6 6.Nf3 ab5 7.Bb5=) 5...Bg4 6.h3 Bh5 7.Be2=; A2) 4...a6 5.ba6 (5.Nf3 d5 6.Be2 ab5 7.Bb5=) 5...Na6 6.Nf3 d6 7.Bc4=; B) 4.Nf3 B1) 4...d5 5.c4 (5.e3 Bg4 6.h3 Bh5 7.g4=) 5...dc4 6.e3 Be6 7.Qc2=; B2) 4...d6 5.Nc3 d5 6.e3 e6 7.Bd3=; B3) 4...a6 5.ba6 (5.e3 d5 6.Ne5 ab5 7.Bb5=) 5...Na6 6.e3 d5 7.Bb5=.

3.b5 Rg8 4.e4+- Nf4 5.Qf3 g5 (5...Ng6 6.Qe3+-) 6.h4 d6 7.hg5 e5 8.g3 Ng6? (better 8...Ne6+-) 9.Nc3 c6 (9...Be6 10.Qe3 c6 11.Nf3+-) 10.Rh7 Qg5 (10...Rg7 11.Rg7 Bg7+-) 11.Qf7 Kd8 12.Qc7 Ke8 13.Qc8 Qd8 14.Qb7 Ne7 15.Qa8 cb5 16.Bb5 Nd7 17.Qa7 Rg7 18.Rh8 Nc8 19.Qa3 (better 19.Qb7 Ncb6 20.a4 Kf7+-) 19...Kf7 20.Qb3 Kg6 21.Qe6 Nf6 22.Qf5 Kf7 23.Bc4 Ke8 24.Qe6 Ne7 25.Rf8! Kf8 26.Qf6 Ke8 27.Bb5 Nc6 (27...Qd7 28.Qg7 Qb5 29.Nb5 Kd8 30.Nd6 Kd7 31.Be5 Kd8 32.Rb1 Kd7 33.Qf7 Kd8 34.Rb7 Nd5 35.Rd7) 28.Qg7 (28.Qg7 Qe7 29.Bc6 Kd8 30.Qg8 Qf8 31.Qf8 Kc7 32.Nd5 Kc6 33.Qc8 Kb5 34.a4 Ka5 35.Bc3) 1–0. DEFFM – GuestFXLX, freechess.org, 2019.

3.e4 c5?? 4.ed5+- Qb6 (4...cb4 5.Qg4+-) 5.b5 a6 6.a4 d6 7.c4 (7.a5 Qc7+-) 7...Bd7 (7...ab5 8.ab5 Ra1 9.Ba1+-) 8.Nf3 ab5 9.cb5 (better is 9.ab5 Ra1 10.Ba1+-) 9...Bb5 (9...e5+-) 10.Bb5 Nd7 11.Nc3 (11.d4 c4+-) 11...Ra5 (11...g6 12.a5 Ra5 13.Bd7 Kd7 14.Na4+-) 12.0-0 Qa7 (12...Qc7 13.d4+-) 13.d4 (13.Ng5 Qa8+-) 13...Kd8 (13...Qb8 14.dc5 dc5 15.Ne4+-) 14.Ng5 (14...Rg8 15.dc5 Qc5 16.Nce4+-) 1–0. Andersson,Lars H – Weinehag,Hans, corr, 1991.

4.b5 c6 5.c4 (5.e4 Nb6 6.Nf3 d5 7.ed5 cd5+=) 5...Nc7 (5...Nb6 6.e3+=) 6.Nc3+- cb5 7.cb5 Ne6 8.Nf3 b6 (8...d6!?+-) 9.e4+- Bb7 10.Rc1 Nc7 (10...d6 11.Bc4 Nc5 12.0-0+-) 11.Bc4 e6 12.0-0 h6 13.Qe2 d5? (13...a4+-) 14.ed5 Bd5 (14...Nd7 15.de6 fe6+-) 15.Nd5 Nd5 16.Bd5 Qd5 (16...Ra7 17.Be6! Bc5 18.Ba2 Re7 19.Qc4+-) 17.Rc8 Kd7 (17...Ke7 18.Ne5 g5 19.Rfc1+-) 18.Rfc1 Bc5 (18...f6 19.R1c7 Kd6 20.a4+-) 19.Rh8 1–0. Ddgs – Seer, internet, 2019.

4.b5 Nf6 5.Nf3=.

4.c3 e5 5.e4 Nf4 6.Qf3=.

4.Nc3 Nc3 5.Bc3 ab4 6.ab4+= e6?? 7.Ra8+- Na6 8.b5 Nc5 9.e3 c6 10.Nf3 Qc7 11.Ba5 b6 12.Bb6! Qb6 13.Rc8 Ke7 14.bc6 dc6 15.Nd4 Kd6 16.Rc6 Qc6 17.Nc6 Kc6 18.Qf3 Kd6 19.d4 Nd7 20.Bb5 Nf6 21.Qb7 Be7 22.Qc6# 1–0. pereira – tnazj, internet, 2009.

4.c4 Nf4 5.e3 Ne6 6.Qa4 b6 7.b5 Bb7 8.f3 d5 9.Nc3 d4 10.ed4 Nd4 11.Nge2 e5 12.0-0-0 c6 13.Nd4 ed4 (13...Qd4? 14.Nd5 Qf2 15.Nc7 Kd8 16.Na8 Ba8 17.Be5 cb5 18.Qb5 Ba3 19.Kb1+-) 14.Re1 Be7 15.Ne4 cb5 16.cb5 Qd5 (16...0-0!?=) 17.Bd4 Nd7?? (better is 17...0-0+/–) 18.Bg7 Rc8 19.Kd1 Rg8 20.Nf6 Nf6 21.Bf6 Rc7 22.Be7 Re7 23.Re7 Ke7 24.Bc4?? Qg5? 25.Re1+- Kf6 26.Bf1 Rd8 27.d3 Kg7 28.Qg4 Qg4 29.fg4 Rd5 30.a4 Bc8? 31.h3 Be6 32.Re4 h5 33.gh5 Rh5 34.g4 Rc5 35.d4 Rc3 36.h4 Ra3 (36...Ra3 37.Kd2 Ra4+-). jackw171 – mricardo, kurnik, 2011.

4.e4+/– Nb6 5.Bb5 c6 6.Be2 d5 7.ed5 Qd5 8.Nf3 Bg4 9.0-0 Qd6 10.c4 (10.Re1 N8d7+-) 10...Qg6? (10...Bf3 11.Bf3 Nc4 12.Bc3+/–) 11.Nc3 (11.c5 N6d7+-) 11...f6? (better is 11...Bf3 12.Bf3 Nc4+/–) 12.d4 Bh3 13.Nh4 Qh6 14.gh3 Qh4 15.Bg4 h5? 16.Be6+- Qg5 17.Kh1 Qf4 18.Qe2 Na6? 19.d5 cd5?? 20.c5+- Nc4 21.Nd5 Qe5 22.Be5 (22.Be5 Rh6 23.Qc4 Rc8 24.Qb5 Rc6 25.Qc6 Kd8 26.Qd7) 1–0. Fournier,Frederic (2095) – kasilasker (1700), Active, 2004.

4.e4+/– Nf4 5.g3 Ne6 6.Bb5 Bb7 (6...a5 7.ba5 Ra5 8.Bc4+/–) 7.Qe2 (7.d3 a5+/–) 7...Ng5 (7...c6 8.Bc4+/–) 8.Nc3 a6 (8...e5 9.Nf3 Bd6 10.Bc4+/–) 9.Ba4 (better is 9.Bc4+/–) 9...e6? (better is 9...e5+/–) 10.h4 Ne4 11.Ne4 Be4 (11...f5 12.Qh5 g6 13.Qe2 Be4 14.f3+- (14.Bh8?! Bh1 15.f3 Bd6+-)) 12.Qe4 c6 13.Nf3 (13.h5 d5 14.Qe3 Qd7+-) 13...Qb6 (13...d5 14.Qe3 Qc8 15.h5+-) 14.h5 h6 (14...d5 15.Qg4+-) 15.Bd4 d5 (15...Qb7 16.0-0+-) 16.Qd5 ed5 17.Bb6 Be7 (17...Bd6 18.0-0-0+-) 18.0-0 0-0 (18...Bf6 19.Rfe1 Kd7 20.Ne5 Be5 21.Re5+-) 19.Rfe1 Bf6 20.Bd4 Bd4 21.Nd4 a5 (21...Rc8 22.Re7+-) 22.Nc6 ab4 (22...Nc6 23.Bc6 Rac8 24.b5+-) 23.Ne7 Kh7 (23...Kh8 24.ab4 d4 25.Bb3 Ra1 26.Ra1+-) 24.ab4 Na6 (24...d4 25.c4 Kh8 26.c5+-) 25.Bc6 Nb4 (25...Ra7 26.Nd5 Nb4 27.Nb4 Ra1 28.Ra1+-) 26.Ra8 Nc2 27.Rf8 Ne1 28.Bd5 Nc2 (28...Nf3 29.Bf3 g5 30.Rf7 Kh8 31.Be4 g4 32.Rh7) 29.Bf7 Nd4 (29...g5 30.Nf5 g4 31.Bg6) 30.Bg6 1–0. michaelbuss (2810) – the little rascal (1670), ChessWorld.net, 2014.

4.c4 Nb6 5.e4 d5 6.cd5 cd5 7.ed5 Nd5 8.Nf3 Nf4 9.Bb5 Nc6 (9...Bd7 10.Bf1=) 10.0-0+= Bg4 11.Nc3 e6 12.Bc6 (12.h3 Bh5=) 12...bc6 13.Bc1? (13.h3 Bh5 14.Ra2 a5–/+) 13...Bd6 (13...Qd3!? 14.Bb2–+) 14.Bb2 (14.h3 Bf5=+) 14...Nd3=+ 15.Qc2?? (better is 15.Rb1=+) 15...Bf3–+ (15...Nb2?! 16.Ne4 Nd3 17.Qc6 Ke7 18.Qb7 Bc7 19.Nd4 Qd4 20.Qc7 Kf8 21.Nd6–+) 16.gf3 Qh4 (16...Qh4 17.f4 Qg4 18.Kh1 Qf3 19.Kg1 Nf4 20.Rfc1 Qg2#; 16...Qg5 17.Kh1 Qf4 18.Qd3 Qh2#) 0–1. tightfist (2300) – powerpragt (2380), net–chess.com, 2010.

4.e3 d6 5.Nf3 a5 6.c4 Nb6 7.b5 Be6 8.d3 N8d7 9.Nbd2 Nc5 10.Nd4 Qd7 11.a4 Bg4 12.f3 Bf5 13.e4 Be6 14.Be2 f6 15.0-0 g6 16.N2b3 (16.Ne6 Ne6 17.f4 c5+/–) 16...Nb3 (better is 16...Nca4!? 17.Ne6 Nb2 (worse is 17...Qe6 18.Nd4 Nb2 19.Ne6 Nd1 20.Nc7 Kd7 21.Na8 Na8 22.Bd1+/–) 18.Nf8 Rf8+=) 17.Qb3+/– Bh6?? (better is 17...c5 18.Ne6 Qe6+/–) 18.bc6+- Be3 19.Kh1 Bc4 20.dc4 bc6 21.Qe3 Nc4 22.Bc4 d5 23.ed5 cd5 24.Bb5 Qb5 25.Nb5 (25.Nb5 0-0 26.Qe7+-) 1–0. ourang – nucleus, kurnik, 2012.

4.e3 e6 5.Nf3 d6 6.Be2 Nd7 7.0-0 N5f6 8.c4 b6 9.Qa4 Qc7 10.Nd4 Bb7 11.Bf3 a6 12.Bc6 Bc6 13.Qc6 Qc6 14.Nc6 e5 15.Nc3 Nb8 16.Nb8 Rb8 17.Nd5 Nd5 18.cd5 Be7 19.Rac1 Ra8 20.Rc6 b5 21.Rfc1 0-0 22.Kf1 Rfe8 23.e4 f6 24.f3 Kf8 25.d4 a5 26.ba5 Ra5 27.de5 fe5 28.R1c3 b4 29.ab4 Rb5 30.Rb3 Reb8 31.Ba3 Ke8 32.Rbc3 R8b7 33.Ra6 Kf7 34.Rcc6 h6 35.Ke2 Bf8 36.Ra5 Be7 37.Rb5 Rb5 38.Kd3 Ke8 39.Kc4 Rb8 40.b5 Kd7 41.b6 Rb7 42.Kb5 g5 43.Ka6 Rb8 44.Rc7 Kd8 45.Ka7 Rc8 46.Rc8 Kc8 47.b7 1–0. St_Jean,Benoit – Wettengl,Willi, Spring's Awakening, 2001.

4.e4 Nf4 5.Qf3 Ng6 6.Bc4 e6 7.Ne2 b5 8.Bb3 Na6 9.0-0 Nc7 10.d4 d5 11.Nd2 Bd6 12.Rfe1 0-0 13.e5 Be7 14.Ng3 Nh4 15.Qd3 Ng6 16.c3 Nf4 17.Qf3 Bg5 18.Bc2 a6 19.Ndf1 Bd7 20.Bc1 Ng6 21.Nh5 Be7 22.Nfg3 Nh4 23.Qe2 f5 24.ef6 Bf6 25.Bf4 Ne8 26.Nf6 Nf6 27.Bg5 Qe8 28.Bh4 1–0. Wall,Bill – Szer, Internet, 2000.

4.c4 Nb6 5.e3 d5 6.c5 Nd7 7.Nf3 e5 8.Bb5 e4 9.Nd4 Nd4 10.Bd4 c6 11.Ba4 Nf6 12.0-0 Be7 13.d3 0-0 14.de4 Ne4 15.Nd2 Bf6 16.Bf6 Nf6 17.Nf3 Bg4 18.h3 Bh5 19.Bc2 Ne4 20.Be4 de4 21.Qd8 Rad8 22.Nd4 f5 23.Ne6 Rf6 24.Nd8 Rg6 25.Nb7 Bf3 26.g3 Rh6 27.h4 g5 28.Rad1 gh4 29.Rd8 Kg7 30.Rd7 Kf8 31.Rd8 Ke7 32.Rd6 Rh5 33.Nd8 hg3 34.Nc6 Ke8 35.Rd8 Kf7 36.Rd7 Ke6 37.Rd6 Kf7 38.Ne5 Ke7 39.Nf3 ef3 40.fg3 Rg5 41.Rf3 f4 42.ef4 Rh5 43.Re3 Kf8 44.Rf6 Kg7 45.Ree6 Rd5 46.Rd6 Re5 47.Kf2 Re7 48.Rf5 h5 49.Rh5 a5 50.Rhh6 ab4 51.ab4 Rb7 52.Rhg6 Kf7 53.Kf3 Rb4 54.Rgf6 Ke7 55.Kg4 Rb8 56.Rfe6 Kf7 57.Kf5 Rb5 58.Re5 Rb8 59.Rd7 Kf8 60.Ke6 Re8 61.Kd5 Ra8 62.Rf5 Ke8 63.Rd6 Ra1 64.g4 Rd1 65.Kc6 Ra1 66.Re5 Kf8 67.g5 Ra6 68.Kd5 Ra1 69.f5 Rd1 70.Kc6 Ra1 71.g6 Ra6 72.Kd5 Ra1 73.Rde6 Kg7 74.Kc6 Ra6 75.Kd5 Ra1 76.Re7 Kf6 77.R7e6 Kg7 ½–½. Phomopsis – bolaroda, lichess.org, 2018.

4.e3 e5 5.b5 Nce7 6.Be5 d6 7.Bb2 Bd7 8.Nf3 Bb5?? (better is 8...c6+/–) 9.Bb5+- c6 10.Be2 Nf5 11.Nc3 Nh4 12.Nh4 Qh4 13.Nd5 cd5 14.0-0 a6 15.g3 Qg5 16.c4 Be7 17.Qa4 Kf8 18.cd5 Qd5 19.Qd4 Qd4 20.Bd4 Rc8 21.Rfc1 Rd8 22.Rc7 b5 23.Rac1 f6 24.Bb6 Re8 25.Bf3 Bd8 26.R7c6 Bb6 27.Rb6 Kf7 28.Rc7 Kg6 29.Ra6 h5 30.Raa7 Rh7 31.h4 f5 32.d4 d5 33.Bd5 Rd8 34.Bf7 Kh6 35.Ra6 g6 36.Rg6 1–0. Fournier,Frederic (1845) – yuliette2, Active, 2011.

4.e3 e6 5.Nf3 Ncb4? (better is 5...d6+=) 6.ab4+- Bb4 7.c4 (better is 7.Bg7!? Rg8 8.Bb2 a6+-) 7...Nf6 8.Be2 0-0 9.0-0 d5 10.cd5 Qd5 11.Nc3 Qh5 12.d4 Bd6 13.Ba3 c5 14.dc5 Bc7? 15.c6! bc6 16.Bf8 Kf8 17.Qd4 Bb7 18.Qh4 Qf5?? 19.Nd4 Qe5 20.Bf3 Bd8 21.Qf4 Qc5? 22.Ne4 Qb4 23.Nf6 Bf6 24.Rfb1 Qc3 25.Rc1 Qd2 26.Qd6 Be7 27.Qc7 Bc8 28.Bc6 Bb7 29.Bb7 Rd8 30.g3 g6 31.Nc6 Qe2 32.Nd8 Bb4 33.Nc6 Kg7 34.Qe5 f6 35.Nd4 (35.Nd4 fe5 36.Ne2+-) 1–0. Fournier,Frederic – samuel231000, Active, 2007.

4.e4 Nb6 5.f4 (5.b5 Na4 6.Bc1 Na5+=) 5...e5= 6.Nf3 (6.b5 Nd4 7.Nf3=) 6...d5 (6...ef4 7.Nc3=+) 7.Bb5 (7.ed5 Qd5 8.Ne5 Be7+-) 7...Nc4 (better 7...ef4 8.Qe2 de4 9.Qe4 Qe7 10.Qe7 Be7=) 8.0-0?? (better 8.Bc4 dc4 9.Ne5 Ne5 10.Be5+- (worse 10.fe5 Qh4 11.Kf1 Qe4–/+)) 8...Nb2–/+ 9.Qe2 d4 (9...a6 10.ed5 ab5 11.Qb5–/+) 10.d3 (better 10.Ra2 d3 11.cd3=+) 10...Bd6?? (better 10...a6 11.Bc6 bc6–/+) 11.Ra2 (11.fe5 Be7 12.Ra2 Nd3 13.Qd3 0-0 14.Bc6 bc6 15.Qd4 c5 16.Qd8 Rd8=) 11...Nd3= 12.Qd3 f5? (better 12...Be6 13.Rb2 Qf6=) 13.fe5+- Be6 14.Rb2 (14.ed6?! Ba2 15.Nd4 0-0 16.Nc6 bc6 17.Bc6 Rb8+=; 14.Nd4?! Ba2 15.Nc6 bc6 16.Bc6 Ke7 17.ed6 Qd6 18.Ba8 Qd3 19.cd3 Ra8+-; worse 14.ef5 Ba2 15.ed6 Qd6 16.Re1 Kf7 17.Bc4 Bc4 18.Qc4 Kf8=) 14...Be5? (14...fe4 15.Qe4 Be7 16.Nd4 Bd5+-) 15.Ne5 0-0 (15...fe4 16.Qe4 Qd5 17.Bc6 bc6+-) 16.Nf3 (16.Nc6 bc6 17.Bc6 Rb8 18.ef5 Bd5 19.Bd5 Qd5+-) 16...Qf6?? (16...fe4 17.Qe4 Bd5 18.Qe2+-) 17.Nbd2 (better 17.Bc6 bc6 18.Nd4+-) 17...Ne5 18.Qd4 Nf3 19.Nf3 fe4 20.Qf6 (20.Ne5!? Qh4 21.g3 Rf1 22.Bf1 Qf6 23.Qe4 Rf8+-) 20...Rf6 21.Nd4 Raf8? (21...Bf7 22.Rf6 gf6 23.Kf2+-) 22.c3 (better 22.Ne6 Re6 23.Bc4 Rf1 24.Kf1+-) 22...Bd5 23.Rd2 (23.Rf6 Rf6 24.Be2 c6+-) 23...c6 (23...e3 24.Rb2 Rf1 25.Bf1+-) 24.Be2 e3 (24...Rf1 25.Bf1 Rf4 26.c4+-) 25.Rd3 (better 25.Rf6 Rf6 26.Rd3+-) 25...Bg2?? (better 25...Rf1 26.Bf1 Re8+-) 26.Rf6 Be4 (26...Rf6 27.Kg2 Rg6 28.Kh1+-) 27.Rf8 Kf8 28.Re3 Bd5 29.Bg4 Bf7 (29...g5 30.Nf5 Bf7 31.Nd6+-) 30.Nf5 (30.Bc8 b6+-) 30...g6 (30...b6 31.Nd6 Bg6 32.Rf3 Ke7 33.Nc8 Ke8 34.Na7+-) 31.Nd6 Bd5 32.c4 Bf7 (32...Bg8 33.Re8 Kg7 34.Bf3+-) 33.c5 (33.Rf3 Ke7 34.Nf7 h5+-) 33...h5 (33...Bd5 34.Re8 Kg7 35.Re7 Kh6 36.h4+-) 34.Bd7 (better 34.Rf3!? Kg8 35.Rf7 hg4 36.Rb7 a6+-) 34...Bd5 35.Re8 (35.Nb7 Kg7+-) 35...Kg7 36.h4 (better 36.Nb7 g5+-) 36...Bf7 (36...b5 37.Rc8 g5 38.Bc6+-) 37.Rd8 (better 37.Re7 Kf6 38.Rf7 Ke5 39.Nb7 a6 40.Re7 Kd4 41.Bc6 Kc3+-) 37...Bb3 38.Ne4 (better 38.Nb7 Bd5 39.Na5+-) 38...Ba4 (38...Bd5 39.Nc3 Bf3+-) 39.Be6 g5 (39...Bb3 40.Rd7 Kf8 41.Rf7 Kg8 42.Nf6 Kh8 43.Rh7) 40.Rg8 Kh7 (40...Kh6 41.hg5 Kh7 42.Nf6) 41.hg5 Bc2 (41...h4 42.Nf6) 42.g6 (42.Nf6) 42...Kh6+- 43.g7 (better 43.Bf5 Be4 44.Be4+-) 43...Be4 44.Bf7 (better 44.Bb3 Bd5 45.Bd5 h4+-) 44...Bh7 (44...h4 45.Bb3 Bg6 46.Rb8 Kg7 47.Rb7 Kf8 48.Ra7+-) 45.Ra8 Kg7 46.Bh5 Bg6 (46...a6 47.Bf3+-) 47.Bd1 (better 47.Bg6!? Kh6+-) 47...a6 48.Ra7 Kf6 49.Rb7 Bd3 50.a4 (50.Bf3 Bb5+-) 50...Be4 51.b5 (better 51.Be2 Ke5+-) 51...ab5 (51...cb5 52.Ra7 ba4 53.c6+-) 52.Rb6 (better 52.a5 Bf5+-) 52...ba4 53.Be2 (better 53.Ba4 Ke6 54.Bc6 Bc6 55.Rc6 Kd5+-) 53...a3 (53...Ke5 54.Ra6 Bc2+-) 54.Rc6 (better 54.Ra6+-) 54...Bc6–+ 55.Bc4 Ke5 56.Bg8 (56.Ba2–+) 56...Bd5 57.c6 (57.Bd5 Kd5 58.Kf2 a2 59.Kf1 a1Q 60.Kf2 Qa3 61.Kg2 Ke4 62.Kh2 Kf3 63.Kh3 Qe3 64.Kh2 Qd2 65.Kh3 Qh6) 57...a2 (57...Bg8 58.c7 Be6 59.Kf1–+) 58.c7 (58.Bd5 a1Q 59.Kf2 Kd5 60.c7 Qa7 61.Kf1 Qc7 62.Kf2 Qf4 63.Ke2 Ke4 64.Kd1 Kd3 65.Ke1 Qh2 66.Kf1 Ke3 67.Ke1 Qe2) 58...a1Q 59.Kf2 Qa7 60.Kg3 Qc7 (60...Qg1 61.Kh4 Kf4 62.c8Q Qg3 63.Kh5 Qg5) 61.Bd5–+ Kd5 62.Kf3 Qc4 63.Kg2 (63.Ke3 Qf1 64.Kd2 Kd4 65.Kc2 Qa1 66.Kb3 Qb1 67.Ka4 Kc4 68.Ka5 Qb5) 63...Qg4 64.Kh1 (64.Kf1 Qf3 65.Kg1 Qe2 66.Kh1 Ke4 67.Kg1 Kf3 68.Kh1 Qg2) 64...Ke4 65.Kh2 Kf3 66.Kh1 Qg2 0–1. Crusader Rabbit (1680) – MARYMARY, ChessWorld.net, 2013.

4.e4 Nf4 5.Qg4 (5.b5 Na5+=) 5...Ne6 6.f4 (better is 6.Qf3=) 6...f6 (better is 6...d5 7.Bd3 Nc5=+) 7.f5 Ng5 8.h4 (better is 8.b5!? Na5 9.Nf3+/–) 8...Nf7= 9.Bc4 e6 10.fe6 de6 11.Be6 Be6 12.Qe6 Qe7 13.Qe7 Be7 14.d3 0-0 (14...b5 15.Nf3+/–) 15.Nd2 (15.b5 Nce5+/–) 15...Nh6 (15...a6 16.h5+/–) 16.0-0-0 (16.b5!? Ne5+/–) 16...Ng4 17.Rf1 a5 18.b5 Na7 19.a4 c6 20.Rf4 (20.bc6 Nc6 21.Nc4 Rac8+/–) 20...Ne3 (20...Ne5 21.d4 Nd7 22.bc6 Nc6 23.Rf3+=) 21.Rh3 (21.Ne2 Rad8+-) 21...Ng2 (better is 21...Bd6 22.Ne2 Bf4 23.Nf4 Ng4+=) 22.Rg4+- Ne1 23.Kd1 Nd3 24.cd3 cb5 25.ab5 Nb5 26.Rhg3 g6 27.h5 g5 28.Ndf3 h6 29.e5 fe5+= 30.Ne5 Bd6 31.Re3 Rac8 32.Ng6 Rf1 33.Ke2 Rb1 34.Be5 Bc5 35.d4 Rb2 36.Kf3 Bb4? 37.Ne2 Bd2?? 38.Ne7+- Kf7 39.Nc8 Be3 40.Ke3 Rb3 41.Kf2 Ke6 42.Kg2 Rb2 43.Kf3 Nc3 44.Nc3 (44...Rb3 45.Ke4+-) 1–0. Slavisa2 – painter1, Live Game Caissa's Web, 2004.

4.Nc3 Nb6 5.e4 (5.e3 a5+=) 5...e5 6.Nf3 Bg4 (6...Nc6 7.Nd5+=) 7.d3 (7.h3 Bf3 8.Qf3 Nc6+=) 7...c6 (7...Bf3 8.Qf3 Nc6 9.Nd5=) 8.Be2 (8.h3 Bh5+/–) 8...Bf3 (8...N8d7 9.Nd2 Be2 10.Qe2+= (worse is 10.Ke2 d5+=)) 9.Bf3+/– N8d7 10.Be2 (10.0-0 Be7+/–) 10...d5+= 11.ed5 cd5 12.0-0 d4 13.Ne4 Nd5 (13...f5!? 14.Ng3 Na4+=) 14.Bf3+/– Nf4 15.g3 (15.c3 dc3 16.Nc3 a5+-) 15...Ne6+/– 16.Nd2 Rb8 17.Nc4 (17.c4+/–) 17...Ng5 (17...Be7!?+/–) 18.Bg2 Be7 19.Na5 (19.Re1 0-0 20.Ne5 Ne5 21.Re5 Bf6+-) 19...Qb6 (19...Qc7 20.Rc1 0-0 21.c3 dc3 22.Bc3+-) 20.f4 Ne6 21.fe5 Ne5 22.Qh5 (better is 22.Qe2 Bf6 23.Rf5+/–) 22...Qd6? (better is 22...Bf6!?+/–) 23.Nb7 (better is 23.Nc4!? Nc4 24.Qf7 (24.dc4?! 0-0+-) 24...Kd8 25.dc4+-) 23...Qc7 24.Bd4?? (better is 24.Rae1 Bf6 25.Bd5+-) 24...Nd4= 25.Rae1 Bf6 26.Rf4 (26.c3 Nc2 27.Re2=) 26...Nc2?? (better is 26...0-0 27.Rd4 Qc3–+) 27.Rc4?? (better is 27.Re5 Be5 28.Rf7+=) 27...g6 (27...Qb6 28.d4 A) 28...Rb7 29.Re5 Re7 30.Rc8 Kd7 31.Bh3 Re6 32.Rc2+- (32.Rh8?! Qd4 33.Kg2 Qe5 34.Qf7 Kd6 35.Qe6 Qe6 36.Be6 Ke6=); B) 28...Ne1–+) 28.Rc7+- gh5 29.Rc2 (29.Nd6 Kf8 30.Rf1 Bd8 31.Rc2 Bb6 32.Kh1 Rd8+-) 29...0-0 30.Be4 (30.Nc5 Rbd8 31.Be4 Ng4+-) 30...h4 (30...Nd3 31.Rd1 Ne5 32.Rc5+/–) 31.gh4 Bh4 (31...Nd3 32.Rf1 Be5+/–) 32.Rg2 (32.Re3 Ng6+-) 32...Ng6 (32...Kh8 33.Re3 f5 34.Bd5+=) 33.Re3 (better is 33.Rf1!?+-) 33...Rbc8+/– 34.Rf3 Rc1 (34...f5 35.Bd5 Kh8 36.Kh1+=) 35.Rf1 Rc3 36.Bg6 (better is 36.Ra2!?+/–) 36...hg6 37.Nd6 (better is 37.Rf4 Bd8 38.Nd8 Rd8 39.a4=) 37...Kg7?? (better is 37...Ra3 38.Rg4 Bd8+=) 38.Nf5+- Kf6 (38...Kg8 39.Nh4 Ra3+-) 39.Nh4 Ke7 (39...Kg7 40.Nf5 Kf6 41.Nd4 Kg7 42.Rgf2+-) 40.Re2 (better is 40.Ng6 fg6 41.Re2 Kd7 42.Rf8 Ra3 43.Rf7 Kd6+-) 40...Kd6 (40...Kd8 41.d4+-) 41.Rf6 Kd7 (41...Kc7 42.Kf1 Rc6 43.Re7 Kb6 44.Rc6 Kc6 45.Ra7+-) 42.Nf3 (42.Ng6!? Rg8 43.Rf7 Kd8+-) 42...Ra3 43.Ne5 Kc7 (43...Kc8 44.Rc2 Kb7 45.Nd7+-) 44.Ng6! Ra1 (44...fg6 45.Rc2 Double attack (45.Rf8 Pinning; 45.Rf8 Deflection; 45.Rc2 Decoy)) 45.Kf2 Rb8 (45...Rc8 46.Re7 Kb8+-) 46.Re7 1–0. Kaufmann,Matthias – Kossuewa,Fatima, Berlin GER, Lichtenberger Sommer, 2014.

4.Nc3 Nc3 5.Bc3 e5 6.e4+=.

4.c4 Nb6 5.e3 d5 6.c5 N6d7 7.Nf3 e5 (7...a5!?+=) 8.Ne5+/– Ne5 9.Be5 f6 10.Bb2 Nc6 11.g3 (11.Bb5 Bf5+-) 11...d4 12.ed4 (12.Bg2 de3 13.Qh5 g6+/–) 12...Nd4 13.Bd4 (13.Bg2 Qe7 14.Kf1 Qd7+/–) 13...Qd4+= 14.Nc3 Bg4 15.Be2 Be2 (15...Bd7 16.Qb3+/–) 16.Qe2 (16.Ke2?! 0-0-0 17.Kf3 h5+=) 16...Be7 (16...Kf7 17.0-0 Re8 18.Qd1+/–) 17.0-0 0-0?? (better is 17...Kd8+-) 18.Qe7 Rfe8 (18...Rf7 19.Qe3 Rd8 20.Rad1+-) 19.Qc7 Qd2 20.Nb5 Re2 (20...a5 21.Nd6 Reb8 22.Rae1+-) 21.Nd6 h5 (21...Qd5 22.Rae1 Re5+-) 22.Qf7 Kh7 23.Qh5 Kg8 24.Qf7 (better is 24.Rfd1 Rf8 25.Rd2 Rd2+-) 24...Kh7 25.Nf5 (better is 25.Rfd1 Qh6 26.Rd4 Rd2+-) 25...Rae8 (25...Qg5 26.Ng7! Qg6 27.Qb7 Rf8 28.Ne6 Rf7+-) 26.Qg7 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e3 e5 5.c4 Nf6 6.Be2 Ne4 (6...Be7 7.Nc3=) 7.d3 Nf6 8.Nd2 g6 (8...Be7 9.Ngf3=) 9.Ngf3+= Bf5 10.e4 Be6 11.0-0 Bg7 12.Ng5 Qe7 13.Ne6 Qe6 14.Nf3 b6 (14...Nbd7 15.Bc1+=) 15.Ng5+/– Qe7 16.f4 Nbd7 17.fe5 de5 18.Nf3 0-0 19.Qb3 (19.Qe1 c5+=) 19...c5 20.Rac1 (20.b5 Bh6+=) 20...Rab8 (20...Ng4 21.Ne1 Qg5 22.Bg4 Qg4 23.Nf3=) 21.Bc3 (21.Rb1 Bh6+=) 21...a6 (21...Bh6 22.Rb1=) 22.Qb2 (better is 22.Rb1+=) 22...Rb7 (better is 22...Bh6 23.Rce1 Ng4=) 23.Ne5+/– Qd6?? (better is 23...Ne5 24.Be5 Ne8 25.Bg7 Ng7+/–) 24.Nd7+- Rd7 25.Bf6 (worse is 25.Rf6 Bf6 26.Bf6 Qf4+-) 25...Bf6 26.Rf6 Qe7 (26...Qc7 27.Rcf1+-) 27.Rb6 1–0. Zaichenko,Andrey – Gramajo,Francisco, FICGS, 2008.

4.e3 e5 5.c4 Nf6 6.Be2 Ne4 (6...Be7 7.Nc3=) 7.d3 Nf6 8.Nd2 g6 (8...Be7 9.Ngf3=) 9.Ngf3+= Bf5 10.e4 Be6 11.0-0 Bg7 12.Ng5 Qe7 13.Ne6 Qe6 14.Nf3 b6 (14...h6 15.Bc1+=) 15.Ng5+/– Qe7 16.f4 Nbd7 17.fe5 Ne5 (17...de5 18.Nf3+=) 18.Qd2 (18.Qa4 Qd7 19.b5 h6+/–) 18...0-0-0 (18...Bh6 19.h4+=) 19.d4 (19.a4 Bh6 20.h4 Nfd7+=) 19...Nc6 20.Bf3 (20.d5 Ne5 21.Be5 de5+/–) 20...Bh6 (20...h6 21.Nh3 Ne4 22.Be4 Qe4 23.Rae1 Bd4 24.Kh1+=) 21.Rfe1 (21.e5 Ng8 22.Bc6 Bg5 23.Qe2 de5 24.c5 Rd4 25.Qa6 Kd8 26.Rae1+- (worse is 26.Bd4 ed4 27.Qa7 Qe6 28.cb6 Be3 29.Kh1 Qc6+-)) 21...Rd7? (better is 21...Nd7!? 22.h4 f6=) 22.h4 (better is 22.e5 Ne4 23.Qd3 (23.Be4?! Bg5 24.Qc2 Nb8+-) 23...Ng5 24.Bc6 de5 25.Re5+-) 22...a6? (22...Nd8 23.a4+/–) 23.Qe2 (better is 23.e5!? Ne5 24.de5 de5 25.Qc2+-) 23...Bg5 (23...Nb8 24.e5 Bg5 25.hg5+- (25.ef6?! Qe2 26.Re2 Bf6+=)) 24.hg5+- Nh5 25.Bh5 (25.Bg4 Qg5 26.b5 ab5 27.cb5 Ne7 28.Bd7 Kd7+-) 25...gh5 26.Qh5 (26.d5 Ne5 27.c5 (27.Qh5?! Rg8+=) 27...dc5 28.Qa6 Kb8 29.Qb5+-) 26...f6? (better is 26...Rg8!?+=) 27.gf6 (27.b5 Na5 28.gf6 Qf6 29.ba6 c6+-) 27...Qf6 28.Re2 (better is 28.e5 Qg7 29.b5 ab5 30.cb5+-) 28...Ne7? (better is 28...Rf8 29.Rd1 Rdf7+/–) 29.d5+- Qg6 (29...Qf8 30.Bh8 Qh8 31.Rc1+-) 30.Qg6 Ng6 31.Bh8 Nh8 32.Rf1 Ng6 33.c5! dc5 (33...bc5 34.bc5 Combination; 33...dc5 34.bc5 Combination) 34.bc5 b5 (34...bc5 35.Rc2+-) 35.Rf6 (35.Rf6 Re7 36.Kf1+-) 1–0. Zaichenko,Andrey – Gramajo,Francisco, FICGS, 2008.

4.e3 e5 5.Nf3 Nf6 (5...Nc6 6.e4 Nf6 7.Nc3+=) 6.c4 (6.Nc3 Be7+=) 6...Bg4 (6...e4 7.Nd4 Be7 8.Nc3=) 7.Be2 (7.Nc3 Nbd7+-) 7...e4 8.Nd4 c5 (better 8...Be2!? 9.Ne2 Nbd7+=) 9.Bg4+- Ng4 (better 9...cd4 10.Bd4 Be7+-) 10.Qg4 Qd7 (10...cd4 11.Bd4 Nc6+-) 11.Nf5 Rg8 (11...Nc6 12.Qe4 Qe6 13.Nc3+-) 12.Qe4 Qe6 (12...Kd8 13.Qh4 g5 14.Qh7 Rg6+-) 13.Qb7 Qe4 14.Qc8 1–0. Pierre – Veilya, internet, 2020.

4.e3 f6?? 5.Qh5+- g6 6.Qd5 c6 7.Qb3 d5 (7...e5 8.Nf3+-) 8.c4 Bg7 (8...e5 9.d4 ed4 10.cd5 de3 11.Qe3 Kf7 12.Nf3 cd5 13.Bd3+-) 9.Nc3 Be6 10.cd5 Bd5 11.Nd5 cd5 12.h4 (12.Bb5 Kf7+-) 12...a6 (12...Nc6 13.b5 Ne5 14.h5+-) 13.Ne2 Nc6 (13...e6 14.h5 g5 15.h6+-) 14.Nf4 White plans h5 14...Qd7 15.h5 (15.Qd5 e5 16.Qd7 Kd7+-) 15...g5 (15...Rd8 16.hg6 e5 17.Nd5 Qd5 18.Qd5 Rd5 19.gh7+-) 16.Nd5 Qd8 (16...Rd8 17.h6 Bh6 18.Bf6+-) 17.h6 Bf8 18.Be2 Rg8 (18...e5+-) 19.Bh5 Kd7 20.Rc1 b5 (20...Kc8 21.Nf6 ef6 22.Qg8 Kb8+-) 21.Nf6! ef6 22.Qd5 Bd6 23.Qc6 Ke7 24.Qb7 Ke6 (24...Qd7 25.Bf6! Ke6 26.Bg4 Kf7 27.Qd7 Kf8 28.Be6 Bb4 29.Qf7) 25.Bf7 Kf5 26.Qf3 Bf4 27.g4 (27.e4) 1–0. michaelbuss (2810) – eagleomega1, ChessWorld.net, 2013.

4.c4 Nb6 5.c5 Nd5 6.e4 Nf4 7.Bc4 (better 7.Qf3 Ng6 8.Bc4+=) 7...Ng2–/+ 8.Kf1 Nf4 9.Nf3 d6 10.d4 (better 10.cd6 cd6 11.Rg1–/+) 10...e5 (better 10...d5 11.Bd3 Nd3 12.Qd3 de4 13.Qe4 Nd7–/+) 11.de5= Bh3 12.Ke1 Qd7 13.Nh4 (13.cd6 cd6 14.Ng5 Ng2 15.Kd2 Be6 16.Ne6 fe6+=) 13...Be7 (13...dc5 14.Bc1 Ne6 15.b5–+) 14.e6? (14.Qf3 de5 (worse 14...Bh4 15.Qf4 g5 16.Qf6+-) 15.Be5 A) worse 15...Bh4 16.Qf4 Nc6 17.Bg7+= (17.Qh4? Ne5 18.Be2 Bg2–+); B) 15...Bg4=+) 14...fe6 (14...Be6 15.Be6 Qe6 16.Qf3–/+) 15.Bg7 Rg8 16.Bh6 Bh4 17.Bf4 Bg4 (better 17...Rg4 18.Be3 Re4–/+) 18.Be6?? (better 18.Be2 Be2 A) worse 19.Ke2 Qg7 20.Qb3 Rf8 (20...Qa1? 21.Qe6 Kf8 22.Bh6 Rg7 23.Qc8 Ke7 24.cd6 cd6 25.Bg7 Qg7 26.Qb7 Nd7 27.Qa8+-) 21.Qe6 Kd8–/+; B) 19.Qe2=+) 18...Qe6–+ (18...Bd1?! 19.Bd7 Nd7 20.Kd1 dc5 21.Be3=; 18...Be6 19.cd6 Rg4 20.dc7 Qd1 21.Kd1 Rf4 22.cb8B Rb8 23.Kd2 Rd8 24.Ke3 Rf2 25.Rg1–+) 19.Qd5 Qd5 20.ed5 Bf3 21.Rf1 Nd7 (21...Bf6 22.Nd2 Bd5 23.Rc1–+) 22.Nd2 Bd5 23.cd6 cd6 (23...Rf8 24.Bg3 Bg3 25.hg3 cd6 26.Ke2–+) 24.Bd6 Bf6 25.Rc1 Be5 (better 25...Rg2 26.Kd1–+) 26.Bc5? (26.Be5 Ne5 27.Rc7 Bc6–+) 26...Bf7 (26...Bg2!? 27.f4 Bb2 28.Rc2 Bf1 29.Rb2–+) 27.f4 (27.Nc4 Bh2 28.Rh1 b5 29.Rh2 Bc4–+) 27...Bb2 28.Rc2 Ba3 (28...Nc5 29.bc5 Ba3 30.Ne4–+) 29.Kf2 (29.Rf3 Nc5 30.Ra3–+) 29...Rg4 (better 29...Nc5 30.bc5 Bg6 31.Re1 Kf8–+) 30.Re1= Kd8 31.Be7 Ke8 32.Bd6 Kd8 33.Bc7 Kc8 34.Re7 Bb3?? (better 34...Bg6 35.Bb6 Kb8 36.Bc7 Kc8 37.Bb6 Kb8 38.Bc7 Kc8=) 35.Nb3 (35.Re8) 35...Bb4 (35...b6 36.Bb6 Kb7+-) 36.Re8 1–0. MARYMARY – carrot1, ChessWorld.net, 2016.

4.c4 Nb6 5.e3 a5 6.b5 c6 7.a4 (7.Qc2 d5=) 7...cb5 (7...d5 8.cd5 ed5 9.Nf3=) 8.ab5 a4 (8...Qc7 9.Na3=) 9.Nf3 (9.Bd4+=) 9...a3 (better is 9...d5!? 10.cd5 ed5=) 10.Na3+/– Ba3 (10...d5!?+/–) 11.Ba3+- d6 12.Bb2 (12.d4 Qc7+-) 12...Ra1 13.Qa1 0-0?? (better is 13...f6+-) 14.Bg7 f6 15.Bf8 Qf8 16.Be2 e5 17.0-0 N8d7 (17...Qg7 18.Qa3 Qc7 19.Ra1+-) 18.Qa2 Qg7 (18...Qf7 19.d4+-) 19.c5 Kh8 (19...d5 20.cb6 Nb6 21.Rc1+-) 20.cb6 Nb6 (20...Qg8 21.Qc2 Nc5 22.d4+-) 21.Ra1 (21.Rc1 Qg8 22.Qg8 Kg8+-) 21...h5 (21...d5 22.Qa3 Bh3 23.Ne1+-) 22.Qa5 (22.Nh4 d5+-) 22...Nd5 (22...Qc7 23.Qb4+-) 23.Qd8 Qg8 24.Qg8 (24.Qd6!? Qe6 25.Qf8 Qg8 26.Qg8 Kg8+-) 24...Kg8 25.Ra8 (25.Bc4!? Be6+-) 25...Nb6 26.Rc8! Nc8 27.Bc4 (27.Nh4 d5+-) 27...Kg7 28.Nh4 (better is 28.e4 Ne7+-) 28...Nb6 (28...Ne7 29.e4+-) 29.Bb3 (better is 29.Nf5 Kf8 30.Nd6 Nc4 31.Nc4 Ke7+-) 29...Kh6 (29...d5 30.Nf5 Kf8 31.Nd6+-) 30.Nf5 Kg5 (30...Kg6 31.Nd6 Kg7 32.d4+-) 31.Nd6 Nd7 (31...f5 32.d4 Kf6 33.Nb7 ed4 34.ed4+-) 32.Nb7 e4 (32...f5 33.d4 ed4 34.f4 Kf6 35.ed4+-) 33.Be6 Ne5 (33...Nb6 34.Nd6+-) 34.Nc5 f5 (34...Kh6 35.Bd5 Ng6 36.b6+-) 35.b6 (35.Bd5!? Ng6 36.b6 Ne7+-) 35...Nc6 36.b7 Kf6 37.Bd5 Nb8 38.Bc6! Nc6 39.Na6 Ke6 40.b8Q Nb8 41.Nb8 Kd5 (41...Kd6 42.Kf1+-) 42.Nd7 Kc4 (42...Ke6 43.Nc5 Kd5 44.Ne4 Ke4 45.f3 Ke5 46.Kf2+-) 43.Kf1 (43.Nf6 h4+-) 43...Kd3 (43...h4 44.Ne5 Kb3 45.h3+-) 44.Ke1 h4 1–0. GuestNMSB – GuestYTCN, freechess.org, 2016.

4.c4 Nb6 5.e3 d5 6.c5 Nc4 7.Bc3 Nc6 (7...Nd7+=) 8.f4 (8.b5 Ne7 9.Nf3 b6+/-) 8...b6 (8...a5 9.Qb3=) 9.Bc4 (9.Qf3!? Bb7 10.Bc4 dc4 11.b5+=) 9...dc4= 10.cb6 (10.Qa4 Qd5 11.Nf3 a6=) 10...cb6=+ 11.Nf3 b5 12.0-0 Bb7 13.Nd4 Nd4 14.Bd4 Qd5 15.Qf3 (15.Qg4!?=+) 15...Qf3-/+ 16.gf3 f6 17.Nc3 a6 18.Kf2 Kf7 19.Ne4 (19.d3 cd3 20.Rfd1 a5 21.ba5 Ra5 22.Rd3 Be7=+ (22...Ba3?! 23.Bb6 Raa8 24.Rd7 Be7 25.Bc5=)) 19...Re8 (19...a5 20.Bc3-/+) 20.Nc5 Bc8 (20...Bc5!? 21.bc5 e5 22.fe5 fe5=+) 21.a4= e5 22.fe5 fe5 23.Bc3 Bd6 24.ab5 ab5 25.Ra7 (25.Rg1+=) 25...Kg8 (better 25...Re7 26.Re7 Ke7+=) 26.Rg1+/- g6 27.Ne4 Bb8 28.Ra8 (better 28.Nf6!? Kf8 29.Nh7 Rh7 30.Rh7+-) 28...Bb7+/- 29.Ra5 (29.Rb8 Rb8 30.Nc5 Bc6 31.Be5 Rd8+-) 29...Kf7 (29...Rf8 30.Ke2 Bc6 31.Ra6+=) 30.Rb5 (30.Ng5 Kg7 31.Rb5 Re7+-) 30...Re7 (30...Be4 31.fe4 Bd6 32.Rb6+/-) 31.Ra1 (31.Ng5 Kg7+-) 31...Rhe8 32.Nc5 Bc6 33.Rba5 (33.Rb6 Bd5+-) 33...Kg8 (33...Bc7 34.Ra7+/-) 34.Ra6 Bd5 35.h4 Rf8 36.e4 Bf7 37.Ke3 Rd8 38.Ra8 Bc7 39.Rd8 Bd8 40.Ra8 Re8 41.Nb7?? (better 41.Nd7+-) 41...Bb6-+ 42.Ke2 Ra8 43.Be5 Ra2 44.Bc3 Bc7 45.Nc5 Bf4 46.b5 (46.Kd1-+) 46...Bd2! 47.Bd2 c3 48.Nb3 (48.Kd1 Rd2 49.Kc1-+) 48...Bb3 (48...Rd2?! 49.Nd2 c2 50.Nb3 Bb3 51.Kd2=; worse 48...cd2 49.Nd2 Bc4 50.Ke3 Bb5 51.f4-+) 49.Kd3 (49.Ke1 cd2 50.Kf2 d1Q 51.Kg3 Qd6 52.e5 Qe5 53.f4 Qe3 54.Kg4 Rg2) 49...Rd2 (49...cd2 50.Kd4 d1Q 51.Ke5 Qa1 52.Kd6 Qf6 53.Kc5 Rc2 54.Kb4 Qc3 55.Ka3 Ra2) 50.Kc3-+ Rf2 51.Kb3 Rf3 52.Kc4 Rh3 53.b6 (53.Kd4 Rh4 54.Kd5 Rh1-+) 53...Rh4 54.Kc5 (54.Kd5 Rh1-+) 54...Re4 55.b7 Re5 56.Kc6 (56.Kc6 Re6 57.Kc5-+). dannysmet (2010) - Wildcas7w (2085), Rated Blitz game, lichess.org, 2021.

4.c4 Nf4 5.e3+= Ng6 6.Nf3 a6 (6...d6 7.Be2+=) 7.d3 (7.Be2 d5+=) 7...Nc6 (7...d6 8.Be2+=) 8.Nbd2 (8.Be2 d5+=) 8...e5 9.Be2 (9.b5 ab5 10.cb5 Na7+=) 9...d6 (9...d5 10.0-0+=) 10.0-0 (10.d4 ed4 11.ed4 d5+=) 10...Bd7 (10...d5 11.Qa4+=) 11.h3 (11.d4 f5+/–) 11...Rg8 (11...Be7 12.d4+=) 12.Ne4 (12.d4 Bf5+/–) 12...Nh4 (better is 12...f5 13.Nc3 Be7+=) 13.Nfg5?? (better is 13.d4+/–) 13...f5–/+ 14.Nh7 (14.b5 Na5 (< 14...fe4 15.bc6 Bc6 16.Ne4+=) 15.Nh7 fe4 16.de4 Rh8 17.Nf8 Qg5–/+) 14...fe4–+ 15.g3? (15.b5 ed3 16.bc6 Bc6 (16...de2?! 17.cd7 Qd7 18.Qe2=+) 17.Qd3 Bg2–+ (17...Ng2?? 18.Qg6 Ke7 19.Ng5+-)) 15...Nf3! 16.Bf3 ef3 17.Qf3 Bh3?? 18.Rfe1?? Rh8 19.Nf8? Rh6?? 20.b5 ab5 21.cb5 Na5 22.Ne6?? Be6–+ 23.d4 d5 24.de5 Nc4 25.Re2 Ra4 26.Rd1 Nb2 27.Rb2 b6 28.Rd3 Qg5 29.Rd4 Rd4 (29...Rd4 30.Rc2 Bg4 31.Qf7 Kf7 32.Rc7 Ke8 33.ed4 Qh5 34.Re7 Ke7 35.f3 Qh1 36.Kf2 Qf3 37.Ke1 Qe2) 0–1. coloplayah (1935) – aonore, net–chess.com, 2005.

4.c4 Nf6 5.Nf3=.

4.e3 Qg5 5.Nf3 Qh6 6.c4 Nf6 7.d4 Ng4 8.h3 Ne3? (better is 8...a5!?+=) 9.fe3+- Qe3 10.Be2 (10.Qe2 Qf4+-) 10...Qe4 (10...Bd6!? 11.Qc2 Bg3 12.Kd1 Qf2+/–) 11.Qd3 Qd3 12.Bd3 d5 13.c5 Be7 14.Nbd2 0-0 15.0-0 h6 16.Ne5 Bf6 17.Ndf3 Be5 18.Ne5 f6 19.Ng4 e5 20.Bf5 Bf5 21.Rf5 Nd7 22.de5 fe5 23.Rf8 Rf8 24.Ne5 Ne5 25.Be5 Rf5 26.Bc7 d4 27.Rd1 Rd5 28.Bd6 d3 29.Kf2 d2 30.Ke2 Kf7 31.Rd2 Rd2 32.Kd2 Ke6 33.Ke3 Kd5 34.Kd3 Kc6 35.a4 b5 36.ab5 Kb5 37.Kc3 a5 38.ba5 Ka5 39.Kc4 Ka6 40.Kd5 Kb7 41.c6 Kc8 42.Ke6 g5 43.g4 Kd8 44.Kf6 Ke8 45.Kg6 (45.Kg6 Kd8 46.Kf5 Kc8 47.Bh2 Kd8 48.Ke6 Kc8 49.c7 Kb7 50.Kd7 Ka6 51.c8Q Kb6 52.Qc4 h5 53.Bg1 Ka5 54.Kc6 hg4 55.Bb6; 45.Be7 h5 46.gh5 g4 47.h6 gh3 48.h7 h2 49.h8Q) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e4 Nb6+=.

4.e4 Ne7 5.Nf3 d5 6.Nc3 Nbc6+=.

4.e4 Ne7 5.Qg4 Ng6 6.Nf3 d6 7.d4 Nd7 8.Nc3 (8.Bb5 d5 9.ed5 ed5=) 8...Nf6= 9.Qg5 Be7 10.Qb5 c6 11.Qd3 Nf4 12.Qd2 e5 (12...Ng6 13.Bd3+=) 13.Rd1 (better is 13.de5 de5 14.Qd8 Bd8 15.Ne5+/–) 13...Qb6?? (better is 13...Bg4=) 14.de5+- de5 15.Na4 Ne4? (better is 15...Qd8 16.Qe3 Nd7 17.Be5 Ne6+/–) 16.Nb6+- Nd2 17.Na8 Nf1 18.Rf1 Nd5? 19.Be5 0-0 20.Nc7 Nf6 21.b5 cb5 22.Nb5 a6 23.Nc3 Re8 24.Bf6 Bf6 25.Ne2 b5 26.Kd2 Bf5 27.Rfe1 Rc8 28.c3 Bg4 29.h3 Bf5 30.Nfd4 Rd8 31.Kc1 Be4 32.f3 Bd5 33.Kc2 Rc8 34.Nf4 Bc4 35.Re4 a5 36.Nc6 h6 37.Ne7 Be7 38.Re7 b4 39.Rd4 Bb3 40.Kb3 Rc3 41.Ka4 (41...Ra3 42.Kb5+-; better is 41.Kb2!? Ra3 42.Rdd7 a4+-) 1–0. METSAR – dugmak, ChessWorld.net, 2005.

4.e4 Nf6 5.e5 Nd5+=.

4.g3 f6 5.Bg2 d6 6.Bd5 (6.Nf3 e5+=) 6...ed5 7.d4 (7.Nf3 Be7=) 7...Be7=+ 8.Nc3 c6 9.h4 Be6 10.e4 (10.Nh3 0-0–/+) 10...de4–/+ 11.Ne4 d5 12.Nc3 (12.Nc5 Bc5 13.dc5 0-0–/+) 12...0-0 13.Nh3 Bd6 14.Qd3 Qe7 15.0-0-0 (15.Kd1 Re8 16.Re1 Qf7–/+ (< 16...Bh3 17.Re7 Re7 18.b5=)) 15...Nd7 (15...a5!? 16.ba5 Ba3 17.Ba3 Qa3 18.Kd2 Ra5 19.Nf4–/+) 16.Rde1 Qf7 (16...a5 17.ba5 Ra5 18.Nf4 Bf4 19.gf4–/+) 17.Re2 Nb6 18.Rhe1?? (18.Nf4 Bd7–/+) 18...Rfe8 (better is 18...Bh3 19.Qf3 Qg6–+) 19.Nf4–/+ Bd7 20.Re8 Re8 21.Re8 Qe8 22.Qe3 Qf7 23.Qf3–/+ Qe7 24.Nce2 Nc4 25.h5 Bf5 26.g4 Be4 27.Qc3 Bf3?? 28.Qf3+/– Bb4?? 29.ab4+- Qb4 30.Bc3 Qa3 31.Kd1 Nb2 32.Kd2 Qa1 33.Bb2 Qb2 34.Qb3 Qb3 35.cb3 Kf7 36.Nc3 Ke7 37.b4 a6 38.Nd3 Kd7 39.Nc5 Kc8 40.f4 Kc7 41.Ne6 Kd7 42.Ng7 Kd6 43.Ke3 b6 44.g5 Ke7 45.g6 Kf8 46.Ne6 Kg8 47.f5 b5 48.gh7 Kh7 49.Kf4 Kg8 50.Nd8 Kg7 51.Nc6 (51...Kh6 52.Nd5+-) 1–0. Pawno Paul – dugmak, ChessWorld.net, 2005.

4.c4 Nb6 5.d3 e5 6.a4?? (6.c5 Nd5+=) 6...d6 (better is 6...Bb4!? 7.Bc3 Bc3 8.Nc3 d6–/+) 7.a5= N6d7 8.g3 Be7 9.Bg2 0-0 10.e3 c6 11.Ne2 Na6 12.Bc3 Nc7 13.Nd2 b6 (better is 13...Qe8=) 14.ab6 ab6 15.Bc6 Ra1 16.Qa1 Bb7?? (better is 16...Nb8 17.Bg2 d5+/–) 17.Bb7+- Ne6 (17...f5 18.0-0+-) 18.Bg2 (18.Bd5 Kf7+-) 18...Qc7 (18...Kh8 19.0-0+-) 19.0-0 f5 (19...Kh8 20.f4+-) 20.Qb2 (better is 20.Bd5!? Rf6+-) 20...Nf6 21.Nb3 Ng4 22.Bd5 Qd7 23.b5 Kh8 24.Bc6 Qd8 25.d4 e4 26.Bd5 Ng5 27.Nf4 Nf3 28.Kg2 Nfh2 29.Rh1 Bh4 30.Ne6 Qg5 31.Nf8 Bg3 32.Ne6 Qh4 33.fg3 Ne3 34.Kf2 Nhg4 35.Kg1 Qg3 36.Qg2 Qg2# 0–1. diablo005 – tokamak, kurnik, 2012.

4.c4 Nf4 5.e3 Ng6 6.Bd3 Ne5?? (better is 6...e6+/–) 7.Be5+- fe5 (7...g6 8.Bg3 a5+-) 8.Qh5 g6 9.Bg6! hg6 (9...hg6 10.Qg6# Mate attack) 10.Qh8 (10.Qg6#) 10...Kf7 11.Nf3 Bg7 12.Ne5 Be5 13.Qd8 Ba1 14.Qc8 a6 15.Qb7 Nc6 16.Qa8 a5 17.ba5 Ne5 18.0-0 Nc4 19.Qd5 e6 20.Qc4 Bf6 21.Qc7 e5 22.Qd7 Be7 23.Nc3 Kf6 24.Nd5 (24.Nd5 Kg5 25.Qe7 Kh6 26.Qf6 Kh7 27.Ne7 g5 28.Qf7 Kh6 29.Nf5#) 1–0. jackw171 – zbijad, kurnik, 2011.

4.e3 g6 5.Bc4 Nb6 6.Ba2 d5 7.Nf3 e6 8.0-0 Nc6 9.d3 Rg8 10.Nbd2 Bd7 11.b5 Ne7 12.Bf6 Bb5 13.c4 Bc6 14.Ne5 Qd6 15.Nc6 Qc6 16.cd5 Ned5 17.Rc1 Qd6 18.Ne4 Qa3 19.Bd5 Nd5 20.Bh4 Be7 21.Be7 Qe7 22.Qa4 Qd7 23.Qd7 Kd7 24.Nc5 Ke7 25.Nb7 Rab8 26.Nc5 Rb2 27.Rb1 Rgb8 28.Rb2 Rb2 29.d4 Nc3 30.Na6 Ne2 31.Kh1 Rc2 32.Nc5 Rc1 33.Rc1 Nc1 34.g3 Ne2 35.Kg2 Kd6 36.Kf3 Nc3 37.h4 h5 38.Kf4 e5 39.Kf3 ed4 40.ed4 Kd5 41.Ke3 Nb5 42.Nb3 Kc4 43.Nd2 Kd5 44.f3 a5 45.Kd3 Nd4 46.f4 a4 0–1. Phomopsis (1665) – WeakHand41 (1680), lichess.org, 2020.

4.e4 Nf4 5.Nf3 e5 6.d4 Nc6 (6...d6!?+=) 7.de5+/– Ne5 (better is 7...Be7+/–) 8.Be5 (better is 8.Ne5 fe5 9.Be5+/–) 8...fe5= 9.Ne5 Qe7 10.Nd3 (10.Qd4!?=) 10...Qe4–/+ 11.Kd2 Be7 (11...Nd3 12.cd3 Qd4 13.Qe2 Kd8 14.Ra2–/+) 12.Qf3 (12.Nc3 Qc4 13.Qf3 Ne6 14.Qh5 g6=+) 12...Qd4 (better is 12...Qf3!? 13.gf3 0-0–/+) 13.c3= Qf6?? (better is 13...Qd5 14.Be2 Bg5 15.Qd5 Nd5 16.Kc2 d6=) 14.Qf4+- Qf4 15.Nf4 Bg5 16.g3 Bf4 17.gf4 0-0 18.Ke3 (18.Bc4 Kh8 19.Re1 g6+-) 18...b6 19.Bg2 Rb8 20.Nd2 Bb7 21.Bb7 Rb7 22.Rhg1 Rbb8 23.Rg5 Rbe8 24.Kf3 h6 25.Rg4 Re7 26.Rag1 Rf6 27.Rg6 Rg6 28.Rg6 Kf7 29.f5 Re5 30.Rg4 Rf5 31.Rf4 Rf4 32.Kf4 Ke6 33.c4 d5 34.cd5 Kd5 35.Ne4 c5 36.bc5 bc5 37.Nd2 c4+/– 38.Kf5 c3 39.Nb3 c2 40.Kg6 Kc4 41.Nc1 Kc3 42.Kg7 Kb2 43.Ne2 Ka3 44.f4 a5 45.f5 Kb4 46.f6 Kc4 47.f7 Kd3 48.Nc1 Kd2 49.Na2 c1Q 50.Nc1 (50…Kc1 51.f8Q+-) 1–0. kingscrusher – color1972, ChessWorld.net, 2005.

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 (7.e4 Qa5 8.Nc3 Nb4+=) 7...Nb4 (7...Qa5 8.Nc3 Nb6 9.e4=) 8.Qb3 (8.Qa4 e6=) 8...e6 (8...Qa5 9.Be5 d6 10.Bc3=) 9.e3 (9.Be5 d6 10.Bc3 c5+=) 9...c5 (9...Qa5 10.Bc3=) 10.Nf3+= Bd6 (better 10...d5!?+=) 11.Bg7+- Rg8 12.Bc3 Nd3?? (better 12...b6+-) 13.Bd3+- e5 (13...b6 14.g3 Bb7 15.Qd1+-) 14.0-0 (14.Rg1 b6 15.Bh7 Rg4+-) 14...Qf6 15.Bh7 Rh8 (15...Rg2 16.Kg2 Qg7 17.Kh1 Qh7 18.Rg1+-) 16.Qc2 (16.Be4 Rh5+-) 16...b6 (16...Bc7 17.b6! Bd6 18.Na3+-) 17.Qe4 Qg7 (17...Bb7 18.Qb7 Rh7 19.d4 cd4 20.ed4+-) 18.Be5 (better 18.Bf5!? Kd8+-) 18...Be5 19.Ne5 Rh7 (19...Qh7 20.Ng6 Kd8 21.Qe7 Kc7 22.Nh8 Qh8+-) 20.Nc6 Kf8 21.Qe7 Kg8 22.Qd8 Qf8 23.Ne7 Kg7 24.Nf5 Kg8 25.Qg5 Kh8 26.Qf6 Kg8 27.Ne7 (27.Ne7 Qe7 28.Qe7+-) 1–0. DEFFM – AmsaiSantham, freechess.org, 2019.

4.a4 ab5 5.ab5 Ra1 6.Ba1 d6 7.c4 Nb4 (7...Nf6 8.Bf6 ef6 9.Nc3=) 8.Qb3 c5 9.bc6 (9.Bc3 Qa5+=) 9...Qb6 (better is 9...N8c6 10.e4 f5=) 10.Bc3?? (better is 10.cb7 Bb7 11.d3+=) 10...Nd3!–+ 11.ed3 Qb3 12.Ne2 (12.Na3 bc6 13.Be2 Qa3–+) 12...Qb1 13.Nc1 Qc1 14.Ke2 Nc6 15.g3 Bf5 16.Bg2 Qa3 (16...Qc2 17.Ra1–+) 17.f3 Qb3 (17...Ne5!? 18.f4 Nd3 19.Rf1–+) 18.g4 Bg6 19.Ra1 Qc2 20.Ra8 Kd7 21.h4 Qd3 22.Kd1 Qb1 (better is 22...Nd4 23.Bd4 Qd4 24.h5–+) 23.Ke2 Bd3 24.Kf2 Qd1 25.f4 Qe2 26.Kg3 e5 27.Bc6 Kc6 28.fe5 de5 29.g5 e4 30.Rc8–+ Kd7 31.Rf8 Rf8 32.Bg7 Qf3 33.Kh2 Re8 34.Bd4 Qf4 35.Kh3 Qd2 36.Kg4 e3 37.Be3 Re3 38.g6 Qe2 39.Kg5 fg6 40.h5 Qh5 41.Kf6 Qf5 42.Kg7 Re7 43.Kh6 Qh5 (43...Qf4) 0–1. Scirocco – painter1, Live Game Caissa's Web, 2004.

4.a4 Nf6 5.Nf3=.

4.c4 Nb6 5.c5 Nd5 6.a4 ab5 (6...e6 7.Nf3 Bc5 8.Qc2+=) 7.ab5 Ra1 8.Ba1 e6 (8...d6 9.cd6 Qd6 10.Nf3=) 9.e3 Bc5 (9...Nf6 10.Qc2=) 10.Bg7 Rg8 11.Bb2 c6 (11...d6 12.Nc3 Nc3 13.Bc3+=) 12.Qc2+= Rg6?? (better is 12...d6+=) 13.Qc5+- cb5 (13...d6 14.Qa7 Nd7 15.Nf3+-) 14.Bb5 (14.Nc3 b6 15.Qd4 Nc3 16.Qc3 b4 17.Qh8 Ke7 18.Qh7 Bb7+-) 14...Nc6 (14...Rg2 15.Nc3 b6 16.Qd4+-) 15.Ba3 Nce7 (15...Nde7 16.Nf3 Rg2 17.Nc3+-) 16.Nc3 Rg5 (16...b6 17.Qd4 Nc3 18.Qc3 Bb7+-) 17.Ne4 Re5 (17...b6 18.Qc4 Rg2 19.Nd6 Kf8 20.Nc8 f6+-) 18.Nd6 Kf8 19.Nf3 b6 20.Qd4 (20.Ne5?! bc5 21.Bc5 f6=) 20...Nc7 21.Qe5 Nb5 22.Qh8 (22.Qh8 Ng8 23.Nb5 d6 24.Bd6 Qe7 25.Ne5 Qd6 26.Nd6 Bd7 27.Qh7 Ke7 28.Ndf7 Bc6 29.Nc6 Kd7 30.Nfe5 Kd6 31.Qd7 Kc5 32.Qd4 Kb5 33.Qc4) 1–0. DEFFM – hsejar, freechess.org, 2018.

4.c4 Nb6 5.c5 Nd5 6.e4 Nf6 7.Bf6 (7.e5!? Nd5 8.Nc3=) 7...ef6+= 8.Qc2 (8.d4 d6 9.ba6 Na6 10.cd6 Bd6+=) 8...ab5–/+ 9.Bb5 c6 (9...Ra5 10.Nc3 Bc5 11.Nf3–/+) 10.Bc4+= d5 11.ed5 cd5 (11...Bc5 12.Ne2+=) 12.Bb3 (12.Bb5 Nc6 13.d4 Be7+=) 12...g6 (better is 12...Nc6!?–/+) 13.Ne2 Bf5 14.d3 (14.Qc3!?+=) 14...Nc6+= 15.0-0 Nb4 (better is 15...Ra5+=) 16.Ba4+/– Bd7 17.Bd7 Qd7 18.Qc3 Na6 19.Qf6 Rg8 20.d4 Be7? (20...Nc5!? 21.Nbc3 Ne6+=) 21.Qe5 (21.Qf3 Nb4 22.Nbc3 g5+-) 21...Nb4 (21...Qe6 22.Qe6 fe6 23.Nbc3+/–) 22.Nbc3 f6 23.Qg3 Ra3 24.Qb8 (24.Qf3 Kf7+-) 24...Kf7 25.Qf4 Qe6 (25...Rga8 26.Qf3+/–) 26.Qc7 (better is 26.Qh6+-) 26...Re8?? (better is 26...Qc6 27.Qg3 b6 28.cb6 Qb6+/–) 27.Qb7+- Qe2 (27...Nc6 28.Nf4 Qc8+-) 28.Ne2 (28.Ne2 Na6 29.Nf4+-) 1–0. GuestXZJW – GuestBTHQ, freechess.org, 2017.

4.c4 Nf6 5.a4 ab5 6.ab5 Ra2?? (better is 6...Ra1 7.Ba1 e6=) 7.Ra2+- (7.Ra2 d6 8.d4+-) 1–0. GuestKGMW – GuestHXWB, freechess.org, 2017.

4.e4 Nb6 5.c4 ab5 6.cb5 c6 7.a4 (7.Nf3 d5 8.ed5 Nd5=) 7...d5 8.a5 Nc4 9.Bc3 cb5 10.ed5 (10.Qb3 Bd7+=) 10...Qd5–/+ 11.Nf3 Nc6 12.Be2 b4 (12...Bf5–/+) 13.Bc4 (better is 13.Bb4!? Nb2 14.Nc3+=) 13...Qc4–+ 14.Bb2 f6 (14...Bg4 15.d4–+) 15.d3 Qe6 16.Qe2 Qe2 17.Ke2 e5 (17...Ra5 18.Ra5 Na5 19.Nbd2–+) 18.h3 (18.Rc1 Bd6–/+) 18...Bc5 (18...Ra5 19.Ra5 Na5 20.Nbd2–+) 19.Nbd2 (19.Rc1 Bd6–/+) 19...0-0 (19...Ra5 20.Ra5 Na5 21.Rc1–/+) 20.Nb3 Bd6 21.g4 (21.d4 Be6 22.de5 Bc4 23.Ke3 Rfe8–+ (worse is 23...Ne5 24.Be5 Be5 25.Ne5–/+)) 21...Re8 22.Nfd2 Nd4 (22...Be6–+) 23.Kf1? (better is 23.Nd4 ed4 24.Kd1–/+) 23...Nb3–+ 24.Nb3 Bd7 (24...Be6 25.Nd2–+) 25.Kg2 (25.Ke2 Rec8 26.Rhc1 Be6 27.Rc8 Rc8–+) 25...Bc6 26.f3 Bd5 27.Nd2 Rec8 28.Rhc1 Rf8 (28...Rc1!? 29.Bc1 Kf7 30.Ne4–+) 29.Ne4–/+ Be4 (29...Rfd8 30.d4 Bb8 31.Rd1–/+) 30.de4 g5 31.Rc2 Rfc8 32.Rcc1 (32.Rd2 Ra6–/+) 32...Bc5 (32...Rc1 33.Bc1 Bc5 34.Kg3–+) 33.Rd1 (better is 33.Ra4–/+) 33...Bd4?? (better is 33...Be3 34.Rd3 Rc2 35.Kf1 Bc5–+ (worse is 35...Rb2 36.Re3 Ra6 37.Re2–+)) 34.Bd4= ed4 35.Rd4 Rc2 36.Kg3 b3 37.Rb4 b2 38.Rb1 Ra5 39.R4b2 Rb2 40.Rb2 b5 41.Rb4 Kf7 42.Rd4 Ra4 43.Rd5 b4 44.Rb5 Ke6 45.h4 h6 46.hg5 (46.Rb6 Ke7+=) 46...hg5 47.Kf2 Kd6 48.Ke1 (48.Ke3 Ra3 49.Ke2 b3=) 48...Kc6 (48...Ra3 49.Ke2 (worse is 49.Rb4 Kc5 50.Rb8 Rf3–/+) 49...b3 50.Rb8+=) 49.Rb8 (better is 49.Rf5!?+=) 49...Kc5+= 50.Kd2 Ra2 51.Kc1 (51.Kd3+=) 51...Kc4?? (better is 51...Rf2–+) 52.Rc8 Kd3 53.Rb8 (53.Rc6 Rf2 54.Rf6 Kc3 55.Rc6 Kd4 56.Rd6 Kc3 57.Rc6 Kd4=) 53...Kc3 (better is 53...Ke3 54.Rb6 Kf3 55.Rf6 Kg4–+ (55...Ke4?! 56.Rf5+=)) 54.Rc8= Kd3 55.Rb8 (55.Rc6 Rf2 56.Rf6 Kc3 57.Rc6 Kd4 58.Rd6 Kc3 59.Rc6 Kd4=) 55...Ra4 (better is 55...Ke3 56.Rb6 Kf3 57.Rf6 Kg4–+ (57...Ke4?! 58.Rf5–/+)) 56.Rb6= Kc3 57.Rc6 Kd3 (57...Kb3!?=) 58.Kb2+= Ra3 59.Rf6 Kd4 (59...Kc4 60.Rf8=) 60.Rf5+= Rc3 61.e5 Kd5 62.Rg5 (62.f4 Rc4=) 62...Rf3 63.Rf5 ½–½. zabazaba – gur_dial, gameknot.com, 2013.

4.e4 Nb6 5.Nf3 d5 6.ed5 Qd5 (6...Nd5 7.Ne5 ab5 8.Qh5=) 7.Nc3 Qe6 (7...Qd8 8.a4+=) 8.Qe2+= Nc4 (8...Qd6 9.a4+=) 9.Qe6+/– Be6 (9...fe6?? 10.Bc4 c6 11.a4+-) 10.Nd4 Nb2 11.Ne6 fe6 12.ba6 Na6 13.Rb1 Nb4 (13...Nc5!? 14.Rb2 g6+/–) 14.Rb2+- c5 (14...Nd5!? 15.Rb7 Kd7+-) 15.Na4! Ra5 (15...Ra4 16.Bb5) 16.Kd1 Kf7 17.Nc5! Na2 (17...Rc5 18.Rb4) 18.Nb7 Ra7 (18...Ra3 19.h4 g6 20.Rh3 Rh3 21.gh3 (21.Ra2?! Rh1 22.Ke2 Bh6=) 21...Nc3 22.dc3+-) 19.Nd8 Kf6 (19...Ke8 20.Nc6 Nc3 21.dc3 Ra1 22.Ke2+-) 20.Rb3 g6 (20...Ra5 21.g4 Nb4 22.Rb4 Rd5+-) 21.Rf3 Ke5 22.Nc6 (22...Kd6 23.Na7+-) 1–0. pierre – wmjaeger, ChessHere.com, 2006.

4.e4 Nf4 5.g3 (5.Qf3 Ng6=) 5...Ng6 (5...Ne6 6.Nf3=) 6.Nf3 (6.h4 d6=) 6...ab5 (6...d6 7.d4=) 7.Bb5 (7.h4 d6=) 7...e6 (7...c6 8.Be2=) 8.0-0 (8.h4 Ra5 9.Nc3 Bb4=) 8...c6= 9.Be2 d5 10.d3 (10.ed5 cd5 11.Re1 Nc6=) 10...de4 (10...Nd7 11.ed5 cd5 12.c4=) 11.de4 Qd1 (11...Nd7 12.Qd3=) 12.Rd1 Nd7 13.h4 h5 14.Nbd2 e5 15.a4 Bc5 (15...b6 16.Nc4 f6 17.a5+=) 16.Nb3 (16.a5 0-0+=) 16...Bb6 (16...Ba7 17.a5+=) 17.a5 Bc7 18.Ng5 0-0 (better is 18...Bd8!?+=) 19.Bh5+- Nf6 20.Be2 Be6 21.Ne6 fe6 22.h5 Ne7 23.Nc5 Ra5 24.Ne6 Ra1 25.Ba1 Rc8 26.Nc7 Rc7 27.Rd8 Kh7 28.Be5 Rd7 29.Bf6 Rd8 30.Be7 Re8 31.Bd6 Re6 32.e5 Kh6 33.Bc4 Re8 34.Bf7 Rd8 35.Kg2 Kg5 36.Bg6 Rd6 37.f4 (37.f4 Kg4 38.ed6 b5 39.d7 b4 40.d8Q b3 41.Qd7) 1–0. pierre – hope, internet, 2010.

4.c4 Nb4?? 5.a3+- N4a6 6.ba6 Ba6 7.e3 Nc6 (7...d5 8.Qa4 c6 9.d3+-) 8.Nf3 Na5 (8...e6 9.d4+-) 9.Qc2 d6 (9...c6 10.d3+-) 10.Be2 Qd7 11.0-0 f6 12.Nd4 (12.Re1 e6+-) 12...0-0-0 (12...e5 13.f4+-) 13.h3 e5 (13...g6+-) 14.Bg4 f5 (14...Qg4 15.hg4 ed4 16.Bd4+-) 15.Bf5 Qf5 (15...ed4 16.Bd7 Rd7 17.Bd4 Bc4 18.d3+-) 16.Nf5 b5 (16...Bc4 17.Rc1 c6 18.Qe4+-) 17.cb5 Bb5 18.Nc3 (better is 18.Rc1 Rd7+-) 18...Bf1 19.Kf1 g6 20.Nb5 gf5 (20...Rd7+-) 21.Qc7 1–0. GuestYMWK – GuestZTBX, freechess.org, 2017.

4.c4 Nf4 5.e3 Ne6 6.Be2 a6 7.a4 ab5 8.ab5 Bb7 9.Bf3 (9.Ra8 Ba8 10.Nf3 Nc5+/–) 9...Ra1+= 10.Ba1 Bf3 11.Nf3 Nc5 12.d4 Nb7 13.0-0 e6 14.d5 Nc5 15.de6 Ne6 16.Qc2 Bc5 17.Rd1 0-0 18.Nc3 Be7 19.Ne4 d6 20.Nd4 Nd4 21.Rd4 Nd7 22.Rd1 Nf6 23.Ng5 h6 24.Bf6 hg5 25.Bb2 Bf6 26.Bd4 (26.Ra1 Bb2 27.Qb2 Re8+/–) 26...Qe7 27.Qf5 (27.Bf6 Qf6 28.Qe4 Qe5 29.Qe5 de5+/–) 27...Bd4+= 28.Rd4 Qf6 29.Qd7 (29.Qe4 Qe6+/–) 29...Qd8 (29...Ra8 30.Rd1 Ra1 31.Qe8 Kh7 32.Qe4 Kg8 33.Rf1+=) 30.Qf5 f6 (better is 30...Qf6!? 31.Qf6 gf6+/–) 31.Qd5+/– Kh8 32.h4 Kh7 33.Qe4 (33.Rg4 Qd7 34.Qf3 Qe7+/–) 33...Kh6 (33...f5!? 34.Qf3 g4+=) 34.hg5+/– Kg5?? (34...fg5!? 35.f3 Re8+/–) 35.Qg4 (35.Qh7 f5 36.Qg7 Kh5 37.g4 fg4 38.Rd5 Rf5 39.Rf5 Kh4 40.Qh6) 35...Kh6+- 36.Rd5 (36.Qh4 Kg6 37.Rg4 Kf7 38.Qh5 Kg8 39.Qd5 Rf7+-) 36...Kh7 (36...g6!?+=) 37.Rh5+/– Kg8 38.Qe6 Rf7 39.Qh3 Rf8 40.Rh8 Kf7 41.Qh5 Ke7 42.Rh7 Rf7 43.Qd5 Qd7 44.f3 Qe6 45.Qd4 g5 46.Rh8 Qe5 47.Qd2 Qa1 48.Kf2 Qe5 49.Ke2 (49.f4 gf4 50.ef4 Qc5 51.Kf3 Qa3 (51...Qc4?? 52.Qe3 Qe6 53.Re8 Ke8 54.Qe6 Kf8 55.Kg4+-) 52.Qe3 Qe3 53.Ke3 f5+=) 49...Qe6 (49...f5 50.Rg8 g4 51.fg4=) 50.Qd3 (50.Qd5 Qd5 51.cd5 f5+/–) 50...Kd7 (better is 50...f5+=) 51.Qg6?? (better is 51.Qd5 Qd5 52.cd5+/–) 51...Qc4+= 52.Qd3 Qe6 53.e4 Ke7 0–1. GuestMXYX – GuestYJZN, freechess.org, 2017.

4.c4 Nf4 5.e3 Ne6 6.Be2 Bb7 7.Bf3 (better is 7.Nf3+=) 7...c5?? (better is 7...c6+=) 8.Bb7+- Nc7 9.Qf3 d5 10.Ba8 (better is 10.Be5 dc4 11.Bc7 Qc7 12.Ba8 e6+-) 10...Na8 11.cd5 (11.Qd5 Qd5 12.cd5 Nd7+-) 11...Nc7 12.Nc3 Nd7 (12...e5 13.de6! Ne6 14.Qa8+-) 13.Nh3 (13.Nge2 Nf6+-) 13...Ne5 (13...e5 14.de6! fe6 15.Nf4+-) 14.Qe4 Ng6 (14...Nd7 15.d6 Ne6 16.de7 Be7 17.Nd5+-) 15.0-0 (15.f4 Qd6+-) 15...e6 (15...Qd7 16.Qa4 e6 17.de6 Ne6 18.Rad1+-) 16.de6 Ne6 (16...fe6 17.Rfd1+-) 17.f4 Nh4 (17...Ne7+-) 18.f5 Be7 (18...Nf5 19.Rf5 Be7 20.Nd5+-) 19.fe6 fe6 20.Nf4 0-0 21.Ne6 (21.Ne6 Rf1 22.Rf1+-) 1–0. DEFFM – GuestBRDR, freechess.org, 2018.

4.c4 Nf4 5.e3+= Ne6 6.Qf3 c6= 7.g3 (7.Nc3 a6=) 7...d6 (7...a6 8.bc6 dc6 9.d4=) 8.Bg2 (8.bc6 Qc7 9.d4+/–) 8...Bb7 (8...d5 9.Na3= (< 9.cd5 Nc5 10.Bd4 e5 11.Bc5 Bc5+-)) 9.Nc3 (9.bc6!? Bc8 10.d4+/–) 9...Qd7 10.h4 (10.Ne4 a6=) 10...g6 (10...Nc5 11.e4=) 11.Ne4 Bg7 12.Bg7 Ng7 13.Ng5 e5 14.Ne4 Ke7?? (better is 14...Qe6 15.Qf6 Qf6 16.Nf6 Ke7 17.bc6 Nc6 18.Nd5 Kd8+=) 15.Qf6+- Kf8 16.Nd6 Qe6 (16...Rg8 17.Qe5 Ne6+-) 17.Qd8 Ne8 18.Bh3 (18.Nb7 cb5 19.Nc5 Qd6 20.Qd6 Nd6 21.Ba8 bc5 22.cb5 Ke7+-) 18...Qe7?? (better is 18...Qd6 19.Qd6 Nd6–+) 19.Qe7+- Ke7 20.Nb7 f5 21.Nf3 (21.d4 ed4 22.ed4 cb5 23.cb5 Nc7+-) 21...Kf6 22.d4 Nd7 23.bc6 Nb8 24.Ne5 Nc7 25.f4 Ke6 26.d5 Nd5 27.cd5 Kd5 28.Bg2 Ke6 29.Rd1 Rc8 30.Rd6 Ke7 31.Bd5 Na6 32.Re6 Kf8 33.Nd6 Rd8 34.Rf6 Kg7 35.Rf7 Kh8 36.h5 Rd6 37.hg6 Rg6 38.Ng6 Kg8 39.Re7 (39.Rfh7) 1–0. Zylla,Johannes – Schwieger, WF–Offene Stadtm., 1990.

4.c4 Nf4 5.e3 Ng6 6.Qf3 (better is 6.Nf3+/–) 6...Nc6?? (better is 6...c6+/–) 7.bc6+- d6 (7...dc6 8.Nc3+-) 8.Nc3 a5 (8...Ne5 9.Qg3+-) 9.d4 a4 (9...Nh4 10.Qe2+-) 10.Nb5 e5 11.0-0-0 (better is 11.Rd1 Nh4 12.Qh5 g6+-) 11...Be6 (11...a3 12.Bc3 Nh4+-) 12.de5 Be7 (12...a3 13.Bc3 Rc8+-) 13.ed6 Bg5 (13...cd6 14.c7 Qc8 15.Bg7 Rg8+-) 14.Nc7 Kf8 15.Ne6 Kg8 16.Nd8 Rd8 17.c7 Be3 18.fe3 Ra8 19.Qa8 (19.Qa8 Nf8 20.Qf8 Kf8 21.c8Q) 1–0. DEFFM – Andinn, freechess.org, 2018.

4.c4 Nf6 5.e3 e6 6.Be2 Be7 (6...a6 7.Nc3+=) 7.Bf3 (7.Nc3 Bb7 8.Nf3 0-0+=) 7...d5+= 8.cd5 Nd5 9.Bg7 Bf6? (better is 9...Rg8 10.Bb2 Nd7+=) 10.Bh8+- Bh8 11.d4 Bb7 12.Na3 Nc3? (12...a6+-) 13.Qd3 (13.Bb7?! Nd1 14.Ba8 Nc3+/–) 13...Bf3 (13...Nd5 14.Ne2 Bf6+-) 14.Nf3 (worse is 14.gf3 Nd5+-; 14.Qc3? Bg2 15.Ne2 Bh1–+) 14...Nd5 15.0-0 (15.Qh7 Bf6 16.e4 Nc3+-) 15...Qd6 (15...Bf6 16.Qh7 a6 17.Rfc1+-) 16.Nc4 Qd7 (16...Qf8 17.e4 Ne7 18.Rac1+-) 17.Nce5 (better is 17.Qh7 Bf6 18.e4 Nc3 19.Qg8 Ke7+-) 17...Qd6 (17...Be5 18.Ne5 Qe7 19.e4+-) 18.Qh7 Be5 19.Ne5 Qd7 (19...Qf8 20.Rac1 Nd7+-) 20.Nd7 (better is 20.Qg8 Ke7 21.Qf7 Kd8 22.Nd7 Nd7 23.Qg8 Ke7 24.Qa8 N5f6+-) 20...Kd7 21.Qf7 (21.Qf7 Kd8 22.Qe6+-) 1–0. GuestDZRZ – GuestDLWB, freechess.org, 2017.

4.c4 Nf6 5.e3 g6 6.Be2 (6.Qf3 c6+=) 6...Bg7= 7.Bf3 d5? (better is 7...c6!?=) 8.Bd5+/– Nd5 9.Bg7 Rg8 10.Bc3 Nc3 11.Nc3 (11.dc3?! Qd1 12.Kd1 a6+=) 11...Be6 (11...c6 12.d4+-) 12.Qf3 c6 13.bc6 Qc7 (13...Qc8!?+/–) 14.Nd5 (14.Nb5 Qc8 15.Nd4 Na6+-) 14...Qc6 (14...Qc8 15.Qf4 Na6 16.Qh4+-) 15.Ne2 (15.Nc7! Qc7 16.Qa8 Bd7+-) 15...Bd5 16.cd5 Qd6 17.Nd4 (17.Nc3 Na6 18.0-0+-) 17...Nd7 (better is 17...Na6!?+/–) 18.Nb5+- Qc5 (18...Qb8 19.d6! ed6 20.Nc7 Ke7 21.Na8 Qa8 22.Qg3+-) 19.d6 Ne5?? (19...Rc8 20.Na7 Rd8 21.de7 Qe7+-) 20.Qa8 (20.Qa8 Kd7 21.Qa7 Kc6 22.Rb1+-) 1–0. DEFFM – MJLMK, freechess.org, 2018.

4.c4 Nf6 5.Nf3=.

4.e4 Nb4?? 5.a3+- d5 (5...Nc2 6.Qc2 a6 7.Nf3+-) 6.ab4 de4 7.Bc4 e6 8.Qh5 Nd7 (8...Qd6 9.Ra4 Bb7+-) 9.Be6 Qe7 10.Bd5 Nf6 11.Bf6 (11.Ba8 Nh5 12.Ra4 Bd7+=) 11...Qf6 12.Nc3 (12.Ba8?! Qa1 13.Qd1 Bb4+-) 12...Bb4 (12...Rb8 13.Bc6 Bd7 14.Bd7 Kd7 15.Ra7+-) 13.Ba8 Bc3 14.Ra7 Bd4 15.Bc6 Ke7 (15...Kf8 16.Qe2+- (16.Be4?? Qf2 17.Kd1 Qf1)) 16.Rc7 Ke6 (16...Kd8 17.Rf7 Qd6+-) 17.Qd5 1–0. DEFFM – GuestXLCD, freechess.org, 2018.

4.e4 Nf6 5.e5 Nd5 6.c4 Nb4 7.a3 d5 8.ab4 dc4 9.Qf3 Bd7 10.Bc4 c6 11.Qf7# 1–0. marus – tamtam, internet live, 2001.

4.e4 Nf6 5.e5 Ne4+=.

4.a4 a5 5.e3 e6 6.Nf3 c6 (6...d5 7.d4=) 7.c4 (7.Be2 Be7+=) 7...Be7 (better is 7...d5!?=) 8.Bg7+/– Rg8 9.Bd4 Nc4? (better is 9...d6+/–) 10.Bc4+- c5 11.Bc3 b6 (11...Rg2 12.Bd3 Bh4+-) 12.Ne5 f6 (12...Bf6+-) 13.Qh5 Rg6 1–0. DEFFM – GuestGNHW, freechess.org, 2018.

4.e3 Na4 5.Qc1 e6 6.Nf3 Nc5 (6...a6 7.Nc3 Nb2 8.Qb2 ab5 9.Nb5=) 7.a4 (7.Nc3 f5+-) 7...Ne4 (7...d5 8.d4 Ne4 9.Bd3+-) 8.Be2 Nf6 9.c4 Ng4 (9...Bb4!?+-) 10.h3 (10.0-0 d6+-) 10...Nh6 (10...Nf6 11.0-0+-) 11.0-0 Nf5 12.e4 (12.Qc2 d6+-) 12...Nd6 (12...Nh4 13.d4+-) 13.Nc3 (13.Qc2 b6+-) 13...f6 14.d4 Nf7 15.Bd3 Nh6 (15...Bb4 16.e5 fe5 17.de5+-) 16.Re1 White intends e5 16...Ng8 (16...Be7 17.e5 fe5 18.Re5+-) 17.e5 fe5 (17...f5 18.Qf4+-) 18.Qc2 Ne7 (18...e4 19.Ne4 Bb4+-) 19.Bh7 d6 (19...Rh7 20.Qh7 d6 21.de5+-) 20.Bg6 Kd7 21.Ne5! de5 22.de5 Nd5 (22...c6 23.Rad1 Kc7 24.Rd8 Kd8 25.Qd3 Bd7+-) 23.cd5 Ke7 24.Ba3 c5 (24...Qd6 25.ed6 Kd8 26.de6 Be6 27.dc7 Kc8 28.cb8Q Kb8 29.Nd5 Bc5 30.Bc5 a5 31.Bd6 Ka7 32.Qc5 b6 33.Qb6) 25.bc6 (25.bc6 Qd6 26.Bd6 Kd8 27.c7 Kd7 28.Be8 Ke8 29.Qg6 Kd7 30.Qe6) 1–0. DEFFM – moloo, freechess.org, 2019.

4.e3 c6 5.a4 c5 6.Nf3 a6 (6...d5 7.a5 N6d7 8.c4+=) 7.c4 (7.a5!? Nd5 8.b6+/–) 7...ab5+= 8.ab5 Ra1 9.Ba1 d6 10.Be2 Be6 11.Qc2 Qd7 (11...Bg4 12.0-0+=) 12.0-0 Bf5 13.e4 Bg6 14.Nh4 e5 15.Ng6 hg6 16.f4 f6 (16...Qe7 17.Rf2+=) 17.fe5 (17.Nc3 Qe7+/–) 17...de5+= 18.h3 g5 19.Nc3 Qe6 (19...Qd4 20.Kh2 Qd7 21.Nd5 Nd5 22.ed5+= (worse is 22.cd5 g4=)) 20.Nd5+/– Nd5 21.ed5 Qd6 22.Bg4 g6?? (better is 22...Nd7+/–) 23.Qg6+- Kd8 (23...Ke7 24.Be6 Rh6 25.Qf7 Kd8 26.Be5 fe5 27.Qf8 Qf8 28.Rf8 Kc7 29.Rc8 Kd6 30.Rb8 Rh7+-) 24.Rf6 Qe7 25.d6 Qd7 1–0. DEFFM – GuestXVGP, freechess.org, 2018.

4.e3 c6 5.a4 d5 6.Nf3=.

4.e3 c6 5.a4 e6 6.Nf3 f6 7.c4 (better 7.Nh4 Qe7 8.Qh5 Qf7 9.Qf7 Kf7 10.a5+=) 7...a6 (better 7...d5 8.cd5 Nd5=) 8.a5+/- Nc4 9.Bc4 d5 10.Bd3 ab5 11.Nd4 Bc5 (11...g6!?+/-) 12.Qh5 g6? (better 12...Kf8+-) 13.Bg6! hg6 1-0. GuestKPPC – GuestNZBR, freechess.org, 2021.

4.e4= d5 5.ed5 Qd5 6.Nc3 Qe6 7.Qe2=.

4.c4 Nb6 5.e3 (5.e4 e6=) 5...d5 (5...a6 6.ba6 Na6 7.Nf3=) 6.cd5 Nd5 7.Nc3 Nb6 (7...Nc3 8.Bc3 Bf5 9.Qf3+=) 8.a4 (8.Nf3 Bg4+=) 8...e6 (8...e5 9.Nf3+=) 9.Nf3 N8d7 (9...a6 10.a5 N6d7 11.b6+=) 10.Be2 (10.a5 Nd5+=) 10...Nd5 (10...Nf6 11.0-0+=) 11.Nd5 (11.0-0 N5f6+/–) 11...ed5+= 12.0-0 a5 (12...Nf6 13.Rc1+=) 13.ba6 (13.Rc1 Nf6+/–) 13...ba6+= 14.Qc2 f6 (14...Qe7 15.Rab1+=) 15.Nh4 (15.d4 Rb8+/–) 15...Ne5 (15...Qb6!?+=) 16.d4+/– cd4 (16...Nd7 17.dc5 Bc5 18.Rab1+/–) 17.ed4+- (17.ed4 Nf7 18.Qc6 Bd7 19.Qd5+-) 1–0. DEFFM – GuestGVGH, freechess.org, 2018.

4.c4 Nc7 5.e3 d5 6.Nf3 d4 (6...Bf5!?+=) 7.ed4+/– cd4 8.Bd4 Ne6 9.Bb2 Qa5 (9...Nf4 10.d4+/–) 10.Be2 a6 11.a4 ab5 (11...Nf4!? 12.0-0 Bf5+/–) 12.ab5+- Qa1 13.Ba1 Ra1 14.0-0 Nc5 (14...Nf4 15.Re1+-) 15.Qc2 Ra4 (15...Ncd7+-) 16.d4 Ra8 17.dc5 Nd7 (17...e6 18.Qc3+-) 18.c6 Nc5 19.Rd1 Bd7 (19...e6+-) 20.cd7 Nd7 21.Rd7! Kd7 22.Ne5 Kc7 23.Nf7 Rg8 24.Qh7 Ra1 25.Qg8 Rb1 26.Bf1 1–0. GuestJBFW – GuestTMHW, freechess.org, 2018.

4.c4 Nf4 5.e3+- Ng6 6.Nf3 d6 7.Bd3 (7.Be2 Nd7+-) 7...Bg4 (7...Nd7 8.0-0+-) 8.0-0 (8.Be4 Qc7+-) 8...e5 (8...Nd7 9.Be2+-) 9.Be4 (9.Nc3 Nd7+-) 9...Bc8 10.d4 (10.Nc3!?+-) 10...f5+- 11.Bd5 e4 (11...cd4 12.ed4 e4 13.Ne1+-) 12.Nfd2+- Qg5 13.f4 (13.Qa4 Nd7 14.b6 a6 15.dc5 dc5+-) 13...Qh6 14.dc5 (better 14.Qa4 Ne7 15.b6 Nd7 16.ba7 Nd5 17.cd5+-) 14...Nd7?? (better 14...dc5 15.Nb3 Ne7 16.Nc5 Nd5 17.Qd5 Qd6+-) 15.c6 bc6 (15...Nc5 16.Nb3 Ne7 17.Nc5 bc6 18.bc6 dc5 19.c7+-) 16.Bc6 Rb8 17.Bd4 (17.Qa4 Ne7 18.Bd4 Rb6 19.Bd7 Kd7+-) 17...Ne7 (17...Bb7 18.Qa4 a5 19.Nc3+-) 18.Qa4 Nc6 (18...Rb6 19.Bd7 Kd7 20.Nc3+-) 19.bc6 Qe6 (19...Ra8 20.Qb5 Be7 21.cd7 Bd7 22.Qb7+-) 20.Qa7 d5 (20...Ne5 21.fe5 de5+-) 21.cd7 Qd7 22.Qb8 Rg8 23.cd5 g5 24.Rc1 Bd6 25.Rc8 Kf7 26.Rg8 Bb8 27.Rg7 Ke8 28.Rd7 Kd7 29.fg5 1–0. DEFFM – GuestPQLT, freechess.org, 2020.

4.a4 cb5 5.ab5 a6 6.Nf3 Qc7 (6...Nf6 7.e3=) 7.e4 Nb4? (better is 7...Nf6 8.Bd3 d6+=) 8.c3+- e6 (8...Qf4 9.d3 d5 10.Ra4+-) 9.cb4 Bb4 10.Bg7 d6 (10...Rg8 11.Bc3 Bc3 12.Nc3 d6+-) 11.Bh8 e5 12.Be2 (12.ba6 Na6 13.Ng5 h6+-) 12...Be6 (12...a5 13.Nc3! Bc3 14.Rc1+-) 13.0-0 (13.Ng5 Kf8+-) 13...Nd7 (13...a5 14.Ng5+-) 14.Ng5 (better is 14.ba6 ba6 15.Ra6 Ra6 16.Ba6 Qc6+-) 14...0-0-0 (14...Ke7 15.Ne6 fe6 16.Bg7+-) 15.b6 (better is 15.ba6 ba6 16.Ba6 Kb8 17.Ne6 fe6+-) 15...Qb6 16.Bg7 h5 (16...Rg8 17.Ne6 fe6 18.Bh6+-) 17.Qa4 (17.Qc2!? Qc7 18.Qa4 Rg8+-) 17...Nc5 18.Qc2 Kb8 (18...Bb3 19.Qb2 Rg8 20.Bf6+-) 19.Nc3 (better is 19.Bh5 Bb3 20.Qb2 Rg8+-) 19...Rc8 (19...Rg8 20.Ne6 fe6 21.Bf6 Bc3 22.dc3+-) 20.Rfb1 a5 21.Ne6 (21.Bf6 Qc7+-) 21...Ne6 22.Qa2 (better is 22.Bf6!? Nf4 23.Bf1 Qd4+-) 22...Ng7 23.Nd5 Ne6 (23...Qc5+-) 24.Nb6 Nc5 25.Rb4 Na6 26.Nd5 (26.Nd7 Kc7 27.Qf7 Rf8 28.Nf8 Kc6 29.Qb7 Kc5 30.Ra5) 26...Nb4 27.Qa5 Na6 (27...Rc1 28.Rc1 Na6 29.Ba6 ba6 30.Qb6 Ka8 31.Rc8) 28.Ba6 ba6 (28...Rc6 29.Qd8 Rc8 30.Qd6 Rc7 31.Qc7 Ka7 32.Bb7) 29.Qb6 Ka8 30.Ra6 1–0. GuestCRBL – GuestCKHN, freechess.org, 2018.

4.c4 Nb6 5.e3 d5 6.c5 (6.cd5 Nd5 7.Nf3 a6=) 6...N6d7 (6...Nc4 7.Qb3+=) 7.d4= Qc7 8.Nf3 Nf6 (8...e5 9.Nc3=) 9.a4 Bg4 10.Be2 Nbd7 11.0-0 Ne4 (11...b6 12.bc6 Qc6 13.Bb5=) 12.Nbd2 Ndf6 (12...Nd2 13.Qd2 e5 14.h3+=) 13.Ne4+/– Ne4 14.Ne5 Be2 15.Qe2 e6 16.bc6 bc6 17.Qa6 Be7 (17...Rc8 18.f3 f6 19.fe4 fe5 20.Qe2+/–) 18.Qc6 Qc6 19.Nc6 Bd8 (19...Bf6 20.Rac1+/–) 20.f3 Nd2 21.Rf2 Nc4 22.e4 Bc7 (22...Kd7 23.ed5 ed5 24.Nb4+-) 23.ed5+- 0-0?? (better is 23...ed5 24.Nb4 Ba5 25.Re2 Kf8+-) 24.Ne7 (24.Rc1!? Nb2 25.Rb2 Bf4+-) 24...Kh8 25.d6 (25.Rc1 Nb2 26.Rb2 Bf4+-) 25...Ba5 (25...Nd6 26.cd6 Bd6 27.Ba3+-) 26.Rc1 (26.Rc1 Nd6 27.cd6+-) 1–0. DEFFM – GuestHBVS, freechess.org, 2018.

4.c4 Nc7 5.e3 cb5 (5...d5 6.Nf3=) 6.cb5 e6 (6...d5 7.Nf3=) 7.Nf3 f6 (7...d5 8.Bd3=) 8.Bd3 e5 (8...d5 9.Qc2+=) 9.Ne5 fe5 10.Qh5 Ke7 11.Qh4 Kf7?? (better is 11...Ke8 12.Bg6 hg6 13.Qh8 d6+=) 12.Qd8+- 1–0. DEFFM – KickYourFace, freechess.org, 2018.

4.c4 Nf6 5.d4= a6 6.e3 ab5 7.cb5=.

4.e4 Nf4 5.g3 Ne6 6.Nf3 Nc5 (6...Nd7+-) 7.d4 (better 7.Nc3!?+-) 7...Ne4= 8.Bd3 Nf6 9.0-0 Bh3 (9...g6 10.Nc3=) 10.Re1 a6 11.a4 (11.c4 ab5 12.cb5 h6+=) 11...ab5+= 12.ab5 Ra1 13.Ba1 c6 (13...Bg4 14.Bb2+=) 14.Ng5 (14.Nc3 Bg4+=) 14...Bd7+= 15.c4 (15.Nc3 d5+=) 15...h6 16.Nf3 Bh3 (16...e6 17.Nc3+=) 17.Nc3 Qb6 (17...Bg4 18.Bb2+-) 18.Qa4 Bg4 19.Qa8 Qd8 (19...Qc7 20.Nd2+-) 20.Nd2 g6? (better 20...Qc8+-) 21.Qb7 cb5 22.c5 (worse 22.Qb5 Bd7 23.Qb4 Bg7 24.Qd6 0-0+-) 22...dc5 23.Bb5 (23.Qb5?! Bd7 24.Qc4 Bg7 25.Qc5 0-0+-) 23...Bd7 24.dc5 Bg7 25.c6 Bc6 (25...Nc6 26.Bc6 0-0 27.Bd7 Nd7 28.Nf3+-) 26.Bc6 Nc6 27.Qc6 Nd7 (27...Qd7 28.Qa8 Qd8 29.Qd8 Kd8 30.Nf3+-) 28.Nd5 0-0 (28...Ba1 29.Ne7 Kf8 30.Ng6 Kg7 31.Nh8 Ne5+-) 29.Bg7 Kg7 (29...e6 30.Bh6 ed5 31.Bf8 Nf8 32.Re8+-) 30.Re7 Nb8 (30...Qc8 31.Qd6 Qc1 32.Nf1 Qc5 33.Qd7 Qd4+-) 31.Qc3 Kg8 (31...Kh7 32.Nf6 Kh8 33.Nh5 f6 34.Qe3 g5 35.Qe4 Rf7 36.Re8 Qe8 37.Qe8 Kh7 38.Qf7 Kh8 39.Qg7) 32.Nf6 Kg7 (32...Kh8 33.Nh5 f6 34.Qe3 g5 35.Qe4 Rf7 36.Re8 Qe8 37.Qe8 Kh7 38.Qf7 Kh8 39.Qg7) 33.Nh5 (33.Nh5 Kh7 34.Qg7) 1–0. DEFFM – GuestLNMX, freechess.org, 2019.

4.e4 Nf6 5.Nc3 e5 (5...Nbd7= 6.Nf3 e5 7.Bc4=) 6.Nf3 Be7 7.d4=.

4.Nf3 A) 4...e5 5.e4 Nf4 6.d4 ed4 7.Qd2=; B) 4...Bf5 5.d3 Bd7 6.e4 Nf6 7.Bf6=; C) 4...Nb6 5.e4 Na4 6.Bd4 Nd7 7.Be3=; D) 4...Nd7 5.e4 (5.d4 N7f6 6.c4 Nb6 7.e3=) 5...N5f6 6.Nc3 e5 7.Bc4=; E) 4...Nf6 5.Nc3 Bf5 6.d3 d5 7.e3=.

5.e3 a6 6.a4=.

5.e3 e5 6.a4 Bf5 7.a5 Nc8 8.Qf3 (8.a6 Na6 9.ba6 ba6 10.Ra6 Rb8+-) 8...Bb1 (8...Ne7 9.a6 (9.Qb7?! Nbc6=) 9...Nd7 10.ab7+/–) 9.Qb7 (9.Rb1?! c6 10.Bc3 Ne7+/–) 9...Be4 10.Qe4 c6 11.d4 Ne7 12.de5 d5 13.cd5 cd5 14.Qd4 Nd7 15.Nf3 Nf5 (15...Rc8 16.Qa7 Ra8 17.Qd4 Ra5 18.Bd3+-) 16.Qf4 (16.Qd5 Rc8 17.Bc4 Bb4 18.Kf1 Rf8+-) 16...Nh6 17.Be2 f6 (17...Rc8 18.Ra2+-) 18.ef6 gf6 (18...Nf6 19.b6! ab6 20.Bb5 Kf7 21.Ne5 Ke6 22.Nc6+-) 19.0-0 Bg7 20.Nd4 Ne5 21.Bh5 Nhf7 (21...Ng6+-) 22.Ne6 (22.Ne6 Bh6 23.Qh6+-) 1–0. DEFFM – GuestGKPR, freechess.org, 2017.

5.e3 e5 6.a4 Bf5 7.a5 N6d7 8.Qf3 Bb1 9.Rb1 c6+/–.

5.e3 e5 6.a4 Bf5 7.a5 N6d7 8.Qf3 Bb1 9.Qb7 f5?? (better is 9...Nc6 10.Qc6 Bg6+-) 10.Qa8 (10.Rb1!? Na6 11.Qa6 Be7+-) 10...Be4 11.Qa7 Nc5 12.0-0-0 (better is 12.Ra3 Nbd7 13.d4+-) 12...Nb3 0–1. GuestRKXG – nexnexnex, freechess.org, 2018.

5.e3 Bf5 6.a4 e5? (better is 6...d5 7.d3 dc4+=) 7.a5+/– N6d7 (better is 7...Bb1 8.ab6 Bg6 9.ba7 Nd7+/–) 8.d4 (8.Qf3 Bb1 9.Qb7 Nc6 10.Qc6 Bg6+-) 8...Be7? (8...e4 9.Ne2+=) 9.d5?? (better is 9.a6 Na6 10.ba6 ba6 11.Qf3+- (worse is 11.Ra6 Qb8 12.Ra2 ed4+/–)) 9...0-0= 10.Nf3 Nc5 11.Be2 e4 (11...a6 12.0-0=) 12.Nd4+= Bg6 13.Nd2 Nd3 (13...Bf6 14.0-0=) 14.Bd3+= ed3 15.N2f3 (15.Qf3 Nd7+/–) 15...Nd7 (15...a6 16.0-0=) 16.0-0 (16.a6 ba6 17.Nc6 Qe8 18.Ra6 f6+/–) 16...Nc5 (16...a6 17.Nd2=) 17.a6 (better is 17.Nb3 Bf6 18.Bf6 Qf6 19.a6+=) 17...Bf6? (17...ba6 18.Nc6 Qd7 19.ba6 Rfe8+/–) 18.ab7+- Nb7 19.Nc6 Qd7 20.Bf6 gf6 21.Na7 (21.Nfd4 Be4+-) 21...Nc5 (21...Qg4 22.Nd2 Qd1 23.Rfd1+- (23.Rad1? Ra7 24.Ra1 Rfa8 25.Ra7 Ra7–+)) 22.Nc6 (22.Nd2 Qf5+-) 22...Ra1 (22...Bh5 23.Ncd4+-) 23.Qa1 Be4 (23...Kg7 24.Nfd4+-) 24.Qf6 Qf5 (24...Re8 25.Qg5 Bg6+-) 25.Qf5 (25.Qf5 Bf5 26.Ne7 Kg7 27.Nf5 Kg6 28.N3d4+-; 25.Ne7) 1–0. DEFFM – FutureFord, freechess.org, 2016.

5.e4 N8d7= 6.d4 Nf6 7.Nd2+=.

5.e4 e5 6.f4 (better 6.d4!?= ed4 7.Bd4=) 6...ef4–/+ 7.Nf3 Bg4 (7...a6 8.Nc3–/+) 8.Be2 (8.d3 N8d7–/+) 8...Bf3 9.Bf3 (9.gf3 Qh4 10.Kf1 N8d7–/+) 9...Qh4–+ 10.Ke2 Be7?? (10...Nc4 11.Bd4 Ne5 12.Nc3–+) 11.e5 (11.Bg7!? Rg8 12.Bd4=) 11...Nc4=+ 12.ed6 (12.Bb7 Nb2 13.Qb3 Qh5 14.Kf1–/+) 12...Bd6 (better 12...Nb2!? 13.Qc2 Nd7 14.Qb2 cd6 15.Bb7 Rb8–+) 13.Bg7= Rg8 14.Qa4 (14.Bc3 Qe7 15.Kf2 Bc5 16.d4 Qe3 17.Kf1 Qe7+-) 14...Qe7 (14...Rg7 15.Qc4 Rg2 16.Kd1 Rh2 17.Qe4 Kd8 18.Rh2 Qh2 19.Qb7 Qf2+-) 15.Kd1= Rg7 (15...Nb6 16.Qd4 Bc5 17.Qf4 Bd6+-) 16.Qc4+- Kf8?? (better 16...Nd7 17.Re1 Be5 18.Bb7 Rb8+-) 17.Bb7+- (17.Bb7 f3 18.gf3+-) 1–0. Wall,Bill – Trogdon,Tim, Dayton, OH, 1979.

4.e3 d6 5.c4 Nf6 6.Nf3 Bg4 7.a4 e4=+ 8.h3 Bh5 (worse 8...ef3 9.hg4 Ng4 10.Qf3+-) 9.g4 ef3 (better 9...Ng4!? 10.hg4 Bg4=) 10.gh5+- Nh5? (better 10...Nbd7+-) 11.Qf3+- Nf6 12.Qb7 Nbd7 13.Bf6 Nf6 14.Bg2 Rb8 (14...d5 15.Qc6 Nd7 16.Nc3+- (worse 16.cd5 Rb8+-)) 15.Qa7 Be7 (15...d5 16.Qd4+-) 16.Bc6 Nd7 17.d4 0-0 18.Qa5 Nb6 (18...Nf6 19.Qc3+-) 19.Qc3 Bf6 (19...Na8 20.a5+-) 20.a5 Nd7 (20...Nc8 21.Be4+-) 21.a6 Nb6 (21...Qe7 22.a7 Ra8 23.Rg1+-) 22.Rg1 (22.a7 Rc8+-) 22...g6 (22...Qe7 23.Qd3+-) 23.Nd2 (23.a7 Rc8+-) 23...Re8 (23...Na8 24.Kf1+-) 24.Qd3 Qe7 (24...d5 25.Be8 Qe8 26.cd5 Nd5 27.Rg4+-) 25.Ne4 (25.a7 Rbd8+-) 25...Bg7 26.Ng3 Rf8 27.a7 Rbd8 28.Qe4 Qe4 (28...Qf6 29.Ra6+-) 29.Be4 (better 29.Ne4 Na8+-) 29...Nc4 (29...f5 30.Bc6+-) 30.a8Q Ra8 31.Ra8 (31.Ba8 Re8 32.Kd1 Re7+-) 31...Ra8 32.Ba8 Nb6 33.Bc6 h5 34.Ne4 Kf8 35.Ke2 Ke7 36.Ra1 Nc4 (36...f5 37.Nc3 g5+-) 37.Ra7 d5 38.Rc7 Kd8 39.Rd7 Ke8 40.Nc5 (better 40.Ng5 Kf8 41.Rf7 Kg8 42.Rb7+-) 40...Na5 41.Nb7 (41.Bd5 Kf8 42.Bf7 Bd4 43.Ne6) 41...Nc6 42.bc6 (42.bc6 Bf8 43.Rd8 Ke7 44.c7 Kf6 45.Rf8 Kg7 46.c8Q g5 47.Rh8 g4 48.Qf8 Kf6 49.Qh6 Kf5 50.Nd6) 1–0. RichardSommer (2030) – ThyWillBeDone (1995), lichess.org, 2020.

4.Be5+= d6 5.Bb2 a6 6.a4 ab5 7.ab5 f6?? (better is 7...Ra1 8.Ba1 Nf6+=) 8.Ra8+- Nd7 9.e4 Nb4 (9...N5b6 10.Ra7+-) 10.c3 Qe7 (10...Nb6 11.Ra7 Qe7 12.cb4 Qe4 13.Qe2 d5+-) 11.Rc8 Kf7 12.Bc4 d5 13.Bd5! Nd5 14.Qh5 g6 15.Qd5 Kg7 16.Rc7 Nb6 17.Qb7 Nd7 18.Rd7 Kh6 19.Re7 f5 20.c4 f4 21.Bh8 (21.Qd7 g5 22.g4 Rg8 23.Rh7 Kg6 24.Qf7) 21...f3 (21...Bg7 22.Bg7 Kh5 23.Re5 g5 24.Qf7 Kg4 25.Qf5 Kh5 26.Qg5) 22.Rh7 Kg5 23.Nf3 Kg4 (23...Kf4 24.Rh4) 24.Rh4 1–0. Taulien,Hans_Juergen – Fritz,Fritzsn, remoteschach.de, 2003.

4.Ba3 e6 5.d3? (5.d4 d5 6.c5 N8c6 7.Bb4 Nb4–/+) 5...N8c6 (5...Qf6 6.d4 Qd4 7.Qd4 Nc2 8.Kd1 Nd4 9.Bf8 Rf8 10.e3–+) 6.Bb4 (6.Bb2 e5–/+) 6...Nb4 (6...Bb4!? 7.Nd2–+) 7.Nf3 Qf6 8.d4 Qf5 9.Nc3? (better is 9.Kd2–+) 9...Nc2 10.Kd2 Na1 11.Qa1 Bb4 12.e3 0-0 13.Bd3 Qg4 14.Rg1 c6 15.h3 Qh5 16.Qb1 a5 17.g4 Qh6 (18.h4 b5–+) 0–1. Cleopatre – Andrevdgraaf (1655), internet, 2007.

4.c5 b6 5.cb6 ab6 6.Nf3–/+.

4.c5 N8c6 5.e3 e5 6.Bc4 (6.a3 Nd5 7.d4 ed4–/+) 6...Qf6 (6...d5 7.a3 dc4 8.ab4–+) 7.Nf3 (7.a3 Na6–/+) 7...Bc5 8.Nc3 (8.a3 Na6–/+) 8...0-0 (8...Qg6 9.Rc1–+) 9.d4? (9.a3 Na5 10.ab4 Nc4 11.bc5 Nb2 12.Qc2+=) 9...ed4–+ 10.Nd4? (10.Na4 Qe7 11.a3 d5–+) 10...Be7 (better 10...Nd4!? 11.ed4 Bd4 12.Qd2–+) 11.Ncb5 (11.a3 Nd4 12.ab4 Nf5–+) 11...Bd8 (11...Nd4!? 12.Bd4 Qc6 13.Qe2–+) 12.Qb3 (better 12.Bc3–+) 12...Be7?? (better 12...Qg6!? 13.0-0 a6–+) 13.Nc6 (better 13.Qd1=) 13...Qg6?? (better 13...Qc6 14.Nc7 Qc7–/+) 14.Ne7+- Kh8 15.Ng6 fg6 16.Qb4 d6 (16...Rf5 17.Qe7 Rf6 18.Qd8 Rf8 19.Qf8) 17.Nc7 (17.Qc3 Rg8 18.Bg8 Kg8 19.Qg7) 17...Rb8 18.Qd6 (18.Qc3 Rg8 19.Bg8 Kg8 20.Qg7) 18...Rf5 (18...Bg4 19.Qe7 Rg8 20.Ne8 Rbe8 21.Bg7 Rg7 22.Qe8 Rg8 23.Qg8) 19.Qd8 (19.Qd8 Rf8 20.Qf8) 1–0. MARYMARY – puca, ChessWorld.net, 2018.

4.d4 N8a6=+.

4.e4 N8c6=+.

4.a3 N4c6=+.

4.Nf3 d5 5.a3 de4 6.ab4 ef3 7.Qf3 Nc6=+.

4.f4 d5 5.d3 (better is 5.a3 N4c6 6.ed5 Qd5 7.Nc3–/+) 5...f6 (better is 5...de4!? 6.de4 Qd1 7.Kd1 Bd7–/+) 6.a3= N4c6 7.Nf3 (better is 7.Qh5!? g6 8.Qd5+=) 7...e6–/+ 8.Be2 (8.Nbd2 d4–/+) 8...Bc5 9.Nbd2 (9.ed5 ed5 10.d4 Bd6–/+) 9...Be3 10.Nf1? (better is 10.g3!?–/+) 10...Bf4–+ 11.Bc1 Be5 12.Ne5–/+ Ne5 13.Bb2 0-0 14.Ng3 Bd7 15.Rf1 Nbc6 16.Be5 Ne5 17.d4 Nf7 18.Bf3 Ng5 19.Kf2 Bb5 20.Re1 Ba4 21.Kg1 c6 22.Qd2 Bb5 23.Be2 Be2 24.Qe2 Ne4 25.Ne4 de4 26.Qe4 Re8 27.Rad1 Qc7 28.Qg4 Qd7 29.Rd3 b5 30.Rde3–/+ a5 31.Re6 Qf7 32.R6e2 b4 33.ab4 a4 34.Qf3 a3 35.Qc6 a2?? 36.Re8 Re8 37.Re8 Qf8 38.Qe6 Kh8 39.Rf8 1–0. THIRTYSECONDSTO MARS – Mphilliber, ChessWorld.net, 2011.

3.a3 a6 4.e3 Bg4 (4...e5 5.Nf3=) 5.Nf3 e5 6.Be2 Be7 7.h3 Bh5 8.c4 0-0 9.d4 ed4 10.Bd4 Nbd7 11.Nbd2 Nb6 (11...c5 12.Bc3=) 12.Rc1 White prepares the advance c5 12...Rc8 13.c5 dc5 14.bc5 Nbd5 15.Qb3 Re8 (15...Rb8 16.Bc4 b6 A) 17.Ba6 bc5 18.Bf6 Rb3 (18...Bf6?! 19.Qd3=; 18...Nf6?! 19.Qc3=) 19.Be7 Qe7 (19...Ne7?! 20.Nb3 Bf3 21.gf3-/+) 20.Nb3 Ne3-+; B) 17.cb6 Nb6 18.Ba6+=) 16.g4 (16.Qb7 a5+/-) 16...Bg6 17.Ne5 Rb8 18.Ng6 (18.h4!?+-) 18...hg6+/- 19.Bf3 c6 20.Nc4 Bf8 21.Ne5 Nd7 Attacks the isolani on c5 22.e4?? (better 22.Nd7 Qd7 23.0-0+/-) 22...Ne5-+ 23.Be5 (23.Be2 Nf4 24.Rd1 Nd7-+) 23...Re5 24.0-0 Nf4 25.Rfd1 Qe8 (25...Nh3 26.Kg2 Nf4 27.Kg1-+) 26.Rd2 (26.Kh2 Bc5 27.Rc2 g5-+) 26...Nh3 27.Kg2 Nf4 28.Kg3 Ne6 29.Rcd1 (29.Rc4 Rc5 30.a4 b5 31.ab5 ab5 32.Rc5 Bc5-+) 29...Nc5 30.Qc4 (30.Qc2 Ne4 31.Be4 Re4-+) 30...Be7 (better 30...Ne4!? 31.Be4 Re4 32.Qc3-+) 31.Rd4 (31.Bg2 Bf6 32.f3 b5-+) 31...Bf6 32.Rd8 (32.Kg2-+) 32...Rd8 33.Rd8 Qd8 34.Qc5 Rc5 35.Kf4 (35.e5 Bh4 36.Kh2 Qd4 37.Bg2 Qf2 38.e6 Qg3 39.Kh1 Rc1 40.Bf1 Rf1) 35...Rc3 (35...Be5 36.Ke3 Rc2 37.Be2 Rc3 38.Bd3 Qd3) 36.g5 (36.Kg3 Qd1 37.Kh2 Be5 38.Kg2 Qf3 39.Kf1 Rc1) 36...Rf3! 37.Kg4 (37.Kf3 Qd3 Double attack) 37...Bg5 (37...Qd3 38.gf6 Qe4 39.Kg5 Rf5) 38.Kf3 Qf6 (38...Qf6 39.Kg3 Bh4 40.Kg2 Qf2 41.Kh1 Bg3 42.e5 Qf1; 38...Qd1 39.Kg2 Qg4 40.Kf1 Qf3 41.Kg1 Bh4 42.Kh2 Qf2 43.Kh1 Bg3 44.e5 Qf1) 0-1. Gehaktbalmetjus (2205) - Putatalho (2085), Rated Bullet game, lichess.org, 2020.

3.a3 Nc6 4.e3 a6 5.Nf3 Be6 6.c4 b5? 7.cb5+- ab5 8.Bb5 Bd7 9.Nc3 Rb8 10.0-0 e5 11.d3 Be7 12.Bc4 Be6 13.Be6 fe6 14.Qe2 0-0 15.Rfb1 Qd7 16.b5 Na7 17.a4 Ne8 18.d4 ed4 19.Nd4 Bf6 20.Nf3 e5? 21.Ne4 Nc8 22.Nf6 Nf6 23.Rc1 Nb6 24.Rc6 Kh8 25.Qc2 Rfc8 26.Rc1 Rb7 27.Nd2 Nbd5 28.Qc4 Qe7 29.e4 Nb6 30.Qc2 Qf7 31.f3 Kg8 32.Nc4 Nc4 33.Qc4 Qc4 34.R1c4 Kf8 35.Rb4 Ke7 36.a5 Kd7 37.a6 Rb6 38.Rb6+- cb6 39.a7 Ra8+/– 40.Ra4 Kc7 41.Ba3 Nd7 42.Rc4 Nc5= 43.Bc5 bc5 44.Ra4 Kb6 45.Ra6 Kb5 46.Rd6 Ra7 47.Rd5 Rc7 48.Re5 Kb4 49.Rd5 c4–/+ 0–1. Fournier,Frederic (1695) – vastoyo, Active, 2006.

3.a3 e6 (---> 1.b4 e6 2.Bb2 Nf6 3.a3 d6).

3.a3 h6 4.e3 c6 5.Nf3 a5 6.Be2 ab4 7.ab4 Ra1 8.Ba1 Qb6 (8...e5 9.0-0=) 9.c3 (9.Bf6 gf6 10.c3 Rg8=) 9...g5 (9...e5 10.Bb2=) 10.d4 g4 11.Nfd2 h5 12.0-0 Bg7 13.f4 (13.e4 Qa7 14.Bb2 b5+=) 13...gf3= 14.Nf3 (14.Bf3 Ng4 15.Re1 Nd7=) 14...Nbd7 (14...Bh6!?=+) 15.Bd3 Nf8 16.Qc2 (16.Bb2 d5+=) 16...c5 (16...d5!?=) 17.bc5 dc5 18.Nbd2 cd4 19.cd4 Bg4 (19...Bd7!?+/-) 20.Rb1 Qd8 21.Bb5 (21.Rb7!? Bh6 22.e4 Rg8+-) 21...N8d7+/- 22.Ne5 0-0 23.Ng4 (23.Bd7 Nd7 24.Ng4 hg4 25.Rb7 Qa8 26.Rd7 Qa1 27.Nf1 e5+-) 23...Ng4 24.Nf1 Ndf6 25.Bd3 (25.Bc4 Qc8+/-) 25...Nd5 26.e4 (better 26.Rb7 Nde3 27.Ne3 Ne3 28.Qe2+=) 26...Qd6?? (26...Nf4 27.Qc3 Qd7=+) 27.e5?? (better 27.ed5 Qd5 28.Rb5 Bd4 29.Kh1 Qb5 30.Bd4 (30.Bb5?! Nf2 31.Kg1 Nh3 32.Kh1 Nf2 33.Kg1 Nh3 34.Kh1 Nf2=) 30...Nf2 31.Bf2+-) 27...Qd7 (27...Qc6 28.h3 Nh6 29.Qd2+/-) 28.Bf5 (28.h3!? Nh6 29.Qd1+/-) 28...e6+= 29.Bg4 hg4 30.Qe4 g3 (30...f5!? 31.ef6 Nf6 32.Qb7 Qb7 33.Rb7 Nd5=) 31.Ng3+/- Qa4 (31...f5 32.ef6! Rf6 33.Nh5+/-) 32.Rf1 (32.Nf5 Rc8 33.Nd6 Qc2+-) 32...Qa2 33.Nh5 Nc3?? (better 33...f5 34.Qf3 Qd2+/-) 34.Bc3 (34.Qg4 Ne2 35.Kh1 Ng3 36.Qg3 Qg2 37.Kg2 f6 38.Qg7) 34...Qb3 35.Be1 (35.Qg4 Qc3 36.Qg7) 35...Bh6 (35...Qd1 36.Ng7 Kg7+-) 36.Nf6 Kg7 37.Qh7 1-0. Gehaktbalmetjus (2130) - serg13287 (2105), Rated Bullet game, lichess.org, 2020.

3.a4 b6 4.e3 a5 5.Nf3 (5.Bf6!? ef6 6.b5=) 5...ab4-/+ 6.c4 bc3 7.Nc3 g6 (7...e5 8.Qc2-/+) 8.Be2 Bg7 9.Nb5 0-0 10.0-0 Ba6 11.d4 Bb5 (better 11...c6!? 12.Nc3 Be2 13.Qe2 d5-/+) 12.ab5= Nbd7 (12...Ra1 13.Qa1 c5 14.bc6 Nc6 15.Qa4=) 13.Ra8 Qa8 14.h3 Ne4 15.Qb3 c5 16.bc6 Qc6 17.Bd3 Nef6 18.Rc1 Qb7 19.Be2 Rc8 20.Nd2 Rc1 21.Bc1 Qd5 (21...d5 22.Ba3 e6 23.Qc3=+) 22.Qb2 (22.Bc4!? Qc6 23.Bf7 Kf8 24.Qc4=) 22...Qa5 23.Bf3 h5 24.Ne4? (better 24.Bc6=) 24...Ne4 25.Be4 Nf6 (25...Qe1!? 26.Kh2 Bd4 27.Qd4 Qc1-+) 26.Bf3 (26.Bd2!? Qa7 27.Bd3=) 26...Qe1-/+ 27.Kh2 g5 (better 27...d5-/+) 28.Bd2? (better 28.Qc2=+) 28...Qf2-+ 29.Qc3 g4 30.Bd1?? (30.hg4 Ng4 31.Bg4 hg4 32.Be1-+) 30...g3 31.Kh1 Qf1 0-1. ARKHA (2025) - almasssss (2410), Casual Bullet game, lichess.org, 2022.

3.a4 e5 4.e3=+.

3.b5 e6 4.a4 Be7 5.c4 d5 6.e3 dc4 7.Nf3 0-0 8.Bc4 c6 9.Be2 cb5 10.ab5 a6 11.0-0 Nbd7 12.Nc3 Re8 13.d4 Nf8 14.Qb3 Nd5 15.Ne5 Nc3 16.Bc3 f6 (16...Qd5 17.Rfb1+/-) 17.Nd3 (17.ba6 fe5 18.ab7 Rb8 19.bc8Q Qc8+-) 17...Kh8 (17...Qb6 18.Nc5+/-) 18.Nc5 Bc5 19.dc5 Qe7 20.Bb4 Qf7 21.c6 bc6 22.bc6 Qg6 23.Bf3 e5 24.Bf8 (24.Bd5 Ne6+/-) 24...Rf8 25.Qb4 Bf5 (better 25...Re8 26.Bd5 Bh3+/-) 26.c7?? (better 26.e4 Bg4 27.Bg4 Qg4 28.Ra6+/-) 26...Rfc8?? (better 26...e4 27.Be2 Bh3=+) 27.Ba8+- Ra8 (27...Qe8 28.Be4 Be4 29.Qe4 Rc7 30.Ra6 Rc8+-) 28.Qb8 Qe8 29.Qa8!! Qa8 (29...Qa8 30.Rfd1 Combination) 30.Rfd1 (30.Rfd1 Qg8 31.Rd8+-) 1-0. BeepBeepImAJeep (2595) - Takeda (2315), lichess.org, 2017.

3.c3 c6 4.a4 Nbd7 5.e3 a5 6.b5 cb5 (6...e5 7.Be2=+) 7.ab5 (7.Bb5 e5=) 7...g6 (7...e5 8.d4=+) 8.c4 Bg7 9.Nf3 0-0 10.Be2 e5 11.0-0 Nc5 (11...Qc7 12.d4=) 12.d4+= ed4 13.Nd4 (worse 13.Qd4 Nb3 14.Qc3 Na1–/+; 13.ed4?! Ne6+=) 13...Nce4 14.Nd2 Nc5 15.N2b3 a4 16.Nd2 Qb6 17.Qc2 (17.N4b3 Rd8+=) 17...Be6 18.N2f3 Rfe8 19.Ne6 fe6 20.Bd4 e5 (20...a3!?=) 21.Bc5+- dc5 22.Ra4 Rad8 23.Rd1 (23.e4 Qc7+-) 23...Nd7 (23...Rd1!? 24.Qd1 e4+-) 24.Ra3 (24.Ng5 Nf6+-) 24...h6 (24...e4!? 25.Nd2 Nf6+-) 25.Rad3+- Kh7?? (better 25...Nf8+-) 26.Rd7 (26.Rd6!? Qd6 27.Rd6 e4+-) 26...Rd7 27.Rd7 Qe6 (27...e4 28.Nd2 Rd8 29.Rd8 Qd8 30.Ne4+-) 28.Rd5 (better 28.Rb7 e4 29.Nd2 Qe5+-) 28...e4 29.Nd2 b6 30.h3 Ra8 (30...h5 31.g4 Kh8 32.gh5 Qh3 33.Ne4+-) 31.Qe4 Ra1 (31...Qf6 32.Bf3+-) 32.Kh2 Qf6 33.Bd3 Rd1 (33...Ra7 34.Qe8 Qf7 35.Qc6+-) 34.Nf3 Rd3 35.Qd3 h5 (35...Qc3+-) 36.Rd6 Qf7 37.Ng5 Kh6 (37...Kh8 38.Rd8 Qe8 39.Re8 Bf8 40.Qd6 Kg7 41.Qf8) 38.Nf7 Kh7 39.Qg6 (39.Qg6 Kg8 40.Rd8) 1–0. BeepBeepImAJeep (2645) – Aleksandr79 (2110), lichess.org, 2016.

3.c3 e5 4.a3 Be7 5.c4 0-0 6.e3 Bg4 (6...a5 7.Nc3–/+) 7.Be2+= Be6 (7...Be2 8.Ne2 d5 9.Be5+=) 8.Nc3= Nbd7 9.Nf3 e4 (9...a5!?=) 10.Ng5+= h6 (10...Ne5 11.Ne6 fe6 12.Qc2+/–) 11.Ne6+/– fe6 12.0-0 d5 13.cd5 ed5 14.d3 c6 (14...ed3!? 15.Qd3 Nb6+=) 15.de4+/– de4 16.Qc2 c5? (better is 16...Nb6!?+/–) 17.Ne4+- cb4 18.ab4 Bb4?? (18...Kh8 19.Rfd1 Qc8+-) 19.Qb3 Kh8 20.Qb4 a5 (20...Qb6 21.Qb6 ab6 22.Nf6 Nf6 23.Bf6 gf6 24.Rab1+-) 21.Qd4 Ne4 (21...Qe7 22.Nd6 b6+-) 22.Qg7 1–0. Janek – tobokin, internet, 2017.

3.c3 g6 4.e3 Bg7 5.Nf3 0-0 6.d4 Nc6 7.Bd3 e5 8.de5 de5 9.Be2 e4 10.Nd4 Ne5 11.0-0 Qe7 12.Nd2 Nd5 13.Ne4+/– f5 14.Ng3 f4+/– 15.ef4 Nf4 16.Re1 Bd7 17.Rc1 Bc6? 18.Nf3?? Ne2–/+ 19.Ne2? Rf3 20.gf3?? Nf3 21.Kf1 Nh2 22.Kg1 Qg5 23.Kh2 Qg2 0–1. Fournier,Frederic (2250) – amarina (2370), Active (1/0), 2002.

3.Nc3 c6 4.Nf3 e5 5.e4 Bg4 6.Be2 Nbd7 7.a3 d5 8.d4 de4 9.Ne5 Ne5? (better is 9...Be6=) 10.de5+/– Qd1 11.Bd1 (11.Nd1?! Be2 12.ef6 Bd1 13.Rd1 gf6=; worse is 11.Kd1 0-0-0 12.Ke1 Be2 13.Ke2 Nd7+=) 11...Bd1 12.Rd1 (12.Nd1?! Nd5 13.Nc3 Nc3 14.Bc3 c5=; 12.ef6?! Bc2 13.Kd2 Bd3=) 12...Nd7 13.Ne4 a5 14.Bc3 ab4 15.ab4 Nb6 16.0-0 Nd5 17.b5 Ra4 18.Rd5?? (better is 18.Bd4+/–) 18...cd5–/+ 19.Nd6 (19.Nd2 Bb4 20.Nb1 Bc5–+) 19...Bd6 20.ed6 f6 21.Re1 Re4 (21...Kd7!? 22.Re7 Kd6 23.Rg7–+) 22.Rd1 Rc4 23.Ba5 Rc2?? (23...Kd7 24.Bc7–+) 24.g3?? (better is 24.Re1 Kd7 25.Re7 Kd6 26.Bb4 Rc5 27.Rb7=) 24...Kd7 (24...Rc5!? 25.Bc7 Rb5 26.Re1 Kd7 27.Re7 Kc6 28.d7 Kc7 29.Re8 Kd7 30.Rh8–+) 25.Rd5–/+ Re8 26.Bc7 Re5 27.Re5 fe5 28.b6 Rd2 29.Kf1 Rd6 30.Bd6 Kd6 0–1. Mauersberger,Hermann (2000) – Seidel,Thomas1 (1945), Leipzig VfB op, 2008.

3.d3 a6 4.Qd2 e5 5.a3 Be7 6.Nc3 0-0 7.Nf3 Bg4 8.h3 Bf3 9.ef3 Nc6 10.Be2 Nd4 11.0-0-0 Ne2 12.Qe2 Qd7 13.Qd2 a5 14.ba5 Ra5–/+ 15.Rdf1 Rfa8 16.Re1 b5 17.f4 ef4 18.Kb1? Kf8 19.Qf4 d5 20.g4 Bd6 21.Qc1 b4 22.Ne2 ba3 23.Bf6 Rb8 24.Ka1 gf6 25.Nd4 Be5?? 26.Qh6+- Kg8? 27.Re5! fe5 28.Nf5 f6 29.Qf6 (29.Qf6 h6 30.Ne7 Qe7 31.Qe7+-) 1–0. smoothmovermovesagain – Skean Du, ChessWorld.net, 2006.

3.d3 c6 4.e4 g6 5.Nf3 Nbd7 6.Be2 Bg7 7.0-0 0-0 8.Nbd2 Re8 9.e5 de5 10.Ne5 Ne5 11.Be5 Qd5 12.Bb2 e5 13.Bf3 Qe6 14.c4 Bd7 15.Re1 Qf5 16.Be4 Ne4 17.Ne4 Qf4 18.g3 Qf5 19.Nd6 Qh3 20.Ne8 Re8 21.c5 Bg4 22.f3 Be6 23.Qe2 f5 24.Qg2 Qh5 25.Be5 Bd5 26.Qf2 Be5 27.f4 Ba1 28.Re8 Kf7 29.Re1 Bc3 30.Rb1 Qg4 31.a3 g5 32.Rc1 Bb2 33.Re1 Bc3 34.Rc1 Bf6 35.a4 h5 36.b5 h4 37.a5 hg3 38.hg3 Qh3 39.Qh2 Bd4 0–1. Chess4Win – muddog12, lichess.org, 2019.

3.d4 a6 4.a4 (4.Nf3 d5+=) 4...b6 (4...Bg4 5.h3 Bf5 6.Nd2+=) 5.Nf3= Bb7 (5...g6 6.Nbd2=) 6.c4 e6 7.Nbd2 (7.Nc3 Be7=) 7...Be7 8.e3 0-0 9.Qc2 Nc6 10.Bc3 a5 11.b5 (11.ba5 Na5 12.Bd3 Qd7=) 11...Nb4+= 12.Bb4 ab4 13.Bd3 c5 (13...g6 14.0-0+=) 14.bc6= Bc6 15.Ne4? (15.0-0!?=) 15...Ne4 (15...Be4 16.Be4 Ne4 17.Qe4–/+) 16.Be4 Be4 17.Qe4 Qd7 18.Qc2 Ra5 19.0-0 Rfa8 20.Ra2 Ra4 21.Rfa1 (21.Ra4!? Qa4 22.Qa4 Ra4 23.Rb1–/+) 21...Ra3–+ 22.Ra3 ba3 23.Qb3 Qa7 24.Kf1 (24.Ne1 Qa4 25.Qb6 Qc4–+) 24...Qa6 25.Ke1 Qa5 26.Kd1 Qa4 (26...a2!? 27.g4–+) 27.Kc2 (27.Qa4 Ra4 28.h3 g6–+) 27...Qb3 (27...Qa6!? 28.Qb5 Qb7 29.Ra2–+) 28.Kb3–/+ d5 29.cd5 ed5 30.Ne5 (better is 30.Rc1–/+) 30...b5 (better is 30...Bd6–+) 31.Nc6= Bd6 32.Nb4 Ra4 33.Nd5 f6 (33...f5 34.g3=) 34.g3 Kf7 35.Nc3 Rb4 36.Ka3 Rd4 37.Kb3 Rb4 38.Kc2 Be5 39.f4 Bd6 (better is 39...Rc4!? 40.fe5 b4=) 40.Ra7+/– Kg6 41.Ra2 (41.Rb7!?+/–) 41...Rc4 (41...Bc5 42.Kd3=) 42.Kd3+= Rc5 43.Rb2 The isolani on b5 becomes a target 43...b4 44.Rb4 Rc3 45.Kc3 Bb4 46.Kb4 Kf5 47.Kc5 Ke4 48.Kd6 f5?? (better is 48...Ke3 49.Ke7 Kf2=) 49.Ke6+- h5 (49...Ke3 50.Kf5 Kf3 51.g4+-) 50.Kf7 Ke3 (50...h4 51.gh4 Ke3 52.Kg7 Kf4 53.h5+-) 51.Kg7 Kf3 52.Kf6 1–0. Portnoy,Yuriy (1975) – Sinicin,Vladimir, Zavolje, 2009.

3.d4 d5 4.b5 (4.a3 e6=+) 4...g6 (4...Bf5 5.Nf3=+) 5.e3 Bg7 6.c4 0-0 (6...Bg4 7.Nf3=) 7.Nf3 b6 (7...Bg4 8.cd5 Nd5 9.e4=) 8.Be2 (8.cd5 a6=) 8...Bb7 (8...c5 9.dc5 bc5 10.cd5=) 9.Nbd2 (9.0-0 a6+=) 9...dc4 10.Bc4 a6 11.a4 c6 (11...ab5 12.ab5 Ra1 13.Qa1+=) 12.0-0+= Qd6 (12...e6 13.Ba3 Re8 14.Qb3+=) 13.Qb3 (13.ba6 Na6 14.a5 b5+=) 13...cb5 14.ab5 a5 (14...Bd5 15.Rfc1+=) 15.Ne5 (15.Ba3 Qd8+/–) 15...Bd5+= 16.Ba3 Qe6 17.f3 (17.Rfc1 Rc8+=) 17...Bc4 18.Qc4 Nd5 19.e4 Rc8?? (better is 19...Nf4+=) 20.ed5+- Rc4 21.de6 fe6 (21...Rd4 22.ef7 Kf8+-) 22.Ndc4 Be5 23.Ne5 Ra7 24.Rfc1 Kg7 25.Nc6 Nc6 26.Rc6 Rb7 (26...e5 27.de5 Rb7 28.Bb2+-) 27.Rac1 Kf7 28.Rc7 Rc7 29.Rc7 h5 (29...h6 30.Rb7+-) 30.Re7 Kf6 31.Rb7 Kf5 32.Rf7 Kg5 33.Bc1 Kh4 34.g3 (34.Bh6 e5 35.de5 g5 36.Rg7 a4 37.Bg5) 34...Kh3 35.Bg5 e5 36.de5 a4 37.Rf4 (37...a3 38.Rh4) 1–0. Schwichtenberg,Juergen – Hoeppner,Klaus Dieter, Hessen–ch Seniors, 2003.

3.d4 e6 4.c4 c6 5.Nc3 Be7 6.e4 0-0 7.Bd3 e5 8.d5 cd5 9.cd5 b6 (9...Qb6 10.a3=) 10.Nf3+= Bb7 11.0-0 Na6 12.b5 (better is 12.a3+=) 12...Nb4? (12...Nc5 13.Qc2+=) 13.a4?? (better is 13.Bb1+-) 13...Nd3= 14.Qd3 a6 15.Ng5 (15.ba6 Ba6 16.Nb5 Nh5=) 15...ab5 16.ab5 Ra1 17.Ra1 Nd7 18.Nf3 Nc5 19.Qc4 Qd7 20.Ra7 Rc8 21.Ba3 (21.Qe2 f5=) 21...Rc7 (better is 21...Ne4!? 22.Qe4 Rc3–/+) 22.Nd2 (22.Qf1 Bc8 23.Rc7 Qc7=) 22...h6 (better is 22...Qc8 23.Bb2 f5 24.ef5 Bg5=) 23.Nb3?? (23.Qe2 Bc8 24.Rc7 Qc7 25.Bc5 bc5+=) 23...Nb3 (better is 23...Bd5 24.Rc7 Bc4 25.Rd7 Nd7–/+) 24.Qb3= Qg4 25.Na4?? (better is 25.Qd1!? Qc8 26.Bb4+=) 25...Qe2 (25...Qe4 26.h3 Bd5 27.Qd5 Qd5 28.Rc7 Qd1 29.Kh2 Qa4 30.Bc1–+) 26.g3?? (26.Qb1 Bg5 27.h3–/+) 26...Qe1–+ 27.Kg2 Qe2 (better is 27...Qe4 28.Kg1 Bd5 29.Qd5 Qd5 30.Rc7 Qd1 31.Kg2 Qa4 32.Re7 Qa3 33.Re8 Kh7–+) 28.Nb6?? (better is 28.Qe3 Qc4 29.h3=) 28…Bg5?? (29.Ra4 Rc2=; better is 28...Qe4 29.Qf3 Qd4–+) 0–1. kamera – jerdude, GameColony.com, 2002.

3.e3 Nd5 4.b5 Nd7 5.Nf3 N5b6 6.a4 Rb8 7.Nc3 c5 (7...a5 8.d4+=) 8.a5+/– Na8 9.Be2 Nf6 10.d4 e5? (better is 10...Bg4!?+/–) 11.de5+- Ng4 12.b6! a6 (12...ab6 13.ab6 Combination) 13.Nd5 f6 (13...Be6 14.c4 de5 15.Ne5 Ne5 16.Be5 Rc8+-) 14.ef6 h6 (14...Nf6 15.Nf6 gf6+-) 15.fg7 Rg8 (15...Bg7 16.Bg7 Rg8 17.Bb2+-) 16.gf8Q Kf8 (16...Rf8 17.h3 Nf6 18.Bf6 Rf6 19.Nf6 Qf6 20.Ra4+-) 17.Ra4 Be6 18.Rf4 Bf7 (18...Ke8 19.Re4 Kd7 20.h3 Nf2 21.Kf2+-) 19.h3 Ne5 20.Be5 de5 21.Ne5 Rg7 22.Bh5 Kg8 23.Nf7 Qd7 24.Nf6 Kf8 25.Nd7 Kg8 26.Nf6 Kf8 27.Qd6 1–0. Kortis – Belle, internet, 2016.

3.e3 Nfd7 4.Nf3+= Nb6 5.c4 N8d7 6.Be2 (6.Nc3 a5 7.a3 h5+-) 6...Nf6 7.0-0 Bg4 (7...a5 8.b5+=) 8.a4 (8.h3 Bh5+-) 8...Qc8 (8...a5 9.b5+-) 9.a5 Bf3 10.gf3 Nbd7 11.f4 e6 12.Bf3 c6 13.e4 (13.Nc3 Rg8+-) 13...a6 (13...Qc7 14.Re1+-) 14.e5 de5 15.fe5 Ng8 16.Qb3 White prepares b5 16...Ne7 17.d4 Ng6 18.Re1 (18.Nd2 Be7+-) 18...Qc7 19.b5 (19.Nc3 Be7+-) 19...Be7 20.Kh1 (20.b6!? Qb8 21.Nd2+-) 20...0-0+= 21.b6 Qd8 (21...Qb8 22.Qe3+=) 22.Rg1 (22.Nc3!?+-) 22...f6= 23.ef6 Nf6 24.Qe3 Qd7 25.Bd1 (25.Nd2!?=) 25...Rad8=+ 26.Bc3? (better 26.Na3=+) 26...c5–+ 27.Ba4 (27.dc5?? Bc5 28.Ba4 Qc8–+ (28...Be3?! 29.Bd7 Rd7 30.fe3–+)) 27...Qc8 28.dc5?? (better 28.Nd2 cd4 29.Bd4–+) 28...Bc5–+ 29.Qe2 Nf4 30.Qe5 Nh3 31.Rg7 (31.Qc7 Ng1 (31...Nf2?! 32.Kg2–+) 32.Kg1 Rf7 33.Qc8 Rc8–+) 31...Kg7 32.Qg3 Kh8 33.Qh3 Bd4 34.Nd2 (34.Qd3 e5 35.Qe2 Ne4 36.Qe4 Qc4–+) 34...Ng4!! 35.Ne4 (35.Qg4 Bc3 Deflection) 35...Qc4 36.Qg4 Bc3 37.Rg1 Qa4 38.Nc3 Qg4 39.Rg4 Rf2 40.Rg2 (40.Ne4 Rd1 41.Rg1 Rg1 42.Kg1 Ra2–+) 40...Rf1 41.Rg1 Rg1 42.Kg1 Rg8 43.Kf2 Rg5 44.Ne4 (44.Ne2 Kg7 45.Nd4 Kf6–+) 44...Ra5 45.Nd6 Ra2 (45...Rb5 46.Ke3–+) 46.Kg3 (46.Ke3 Rh2 47.Nb7 Rb2–+) 46...Rb2 47.Nb7 (47.Nc4 Rb4 48.Na5 Rb6–+) 47...Rb6 48.Na5 (48.Nc5 a5 49.Kf2 Rb5–+) 48...Rb5 49.Nc6 (49.Nc4 a5 50.Kf3 a4–+) 49...a5 50.Nd4 (50.Na5 Ra5 51.Kf4–+) 50...Rb2 51.Ne6 a4 0–1. DEFFM – GuestPDCS, freechess.org, 2020.

3.e3 g5 4.Be2 h5 5.h3 Be6 6.Bf6 ef6 7.d3 f5 8.Bh5 Qf6 9.Nd2 g4 10.hg4 fg4 11.Bg4 Rh1 12.Kf1 Nd7 13.Be6 fe6 14.Qf3 Qa1 0–1. Phomopsis – LuigiCorleone, lichess.org, 2017.

3.e3 h5 4.Bb5 (4.Nf3 h4+=) 4...Bd7 (4...Nc6 5.Nf3=+) 5.Bd7 Qd7 (worse 5...Kd7 6.Nf3+-) 6.Bf6 ef6 7.Nc3 Nc6 8.b5 Ne5 9.Nge2 Qg4 (9...d5!?=) 10.0-0+= Nf3 11.Kh1 Nh4 12.Rg1 Qe6 (better 12...0-0-0!?+=) 13.Nf4+- Qd7 14.Qe2 g5 (14...Be7 15.Nh5 Kf8 16.Nf4+-) 15.Ncd5+- gf4?? (better 15...Kd8 16.g3 gf4 17.gh4 a6+-) 16.Nf6 Ke7 17.Nd7 Kd7 18.ef4 Re8 (18...Ng6 19.Qe4 Ne7 20.Qb7+-) 19.Qd3 Bg7 (19...Ng6 20.Qf5 Kd8 21.Qf7+-) 20.Rae1 Ng6 (20...Kd8 21.Qd5 Reg8 22.Qf7+-) 21.Qf5 Kd8 22.Re8 Re8 23.Qf7 1–0. Ddgs – Seer, internet, 2019.

3.Nf3 a6 4.c4 Nbd7 5.e3 e5 6.Be2 Be7 7.0-0 0-0 8.d3 b6 9.Nbd2 Bb7 10.Qc2 Re8 11.a4 e4 (11...c5!?=) 12.de4+= Ne4?? (better is 12...a5 13.b5 Bf8+=) 13.Ne4+- Be4 14.Qe4 Bf6 15.Qc2 a5 16.b5 Bb2 17.Qb2 Nc5 18.Nd4 Qd7 19.h3 Nb7 20.Bd3 d5 21.cd5 Qd5 22.Rfd1 Qe6 23.Ne6 (23.Ne6 Re6 24.Qc2+-) 1–0. PeterRs – Skean Du, ChessWorld.net, 2006.

3.Nf3 b5 4.e3+= a6 5.a4 ba4 6.Ra4 Bb7 (6...Bd7 7.b5=) 7.Be2+= Nbd7 8.0-0 e6 9.c4 Be7 10.d4 0-0 11.Ra1 c5 12.Bc3 cb4 13.Bb4 Qb6 (13...a5 14.Bd2=) 14.Bc3 Ne4 15.Qc2 Ndf6 16.Nbd2 Nc3 17.Qc3 Qc7 18.Rfb1 Rfc8 19.Qb3 Rab8 20.Qa2 Ne4 (20...e5 21.Qc2=) 21.Qc2 (21.Ne4 Be4 22.Rb8 Rb8 23.Qa6 Rb2+=) 21...Nf6 22.Rb2 Ra8 23.Rab1 Bc6 24.Ra1 a5 25.Rba2 (25.e4 a4=) 25...a4 26.Bd1 Ra7 27.Qc3 Rca8 28.Qb4 Increasing the pressure on the isolated pawn on a4 (28.Bc2 Ra6=) 28...d5 (28...Rb8!? 29.Qa3 Raa8=+) 29.c5= Qd7? (better 29...Qa5!? 30.Qa3 Ne4=) 30.Ne5+/- Qe8 31.Nc6 Qc6 32.Ra4 Ra4 33.Ra4 Rc8 (33...Bd8!?+/-) 34.Ra7+- Bf8?? (better 34...Qe8+-) 35.Ba4 Bc5 (35...Qa8 36.Ra8 Ra8+-) 36.dc5 (36.Bc6?! Bb4 37.Bb7 Rc1 38.Nf1 g6=+; worse 36.Qc5 Qc5 37.dc5 Kf8+-) 36...Qc5 (36...Qa8 37.Ra8 Ra8 38.c6+-) 37.Qc5 (37.Qc5 Rf8 38.Bc6+-) 1-0. dannysmet (2010) - tuborggold (2050), Rated Blitz game, lichess.org, 2021.

3.Nf3 c5 4.b5 b6 5.c4 Bb7 6.g3 Bf3 7.ef3 Nbd7 8.Bg2 g6 9.0-0 Bg7 10.d3 0-0 11.f4 Rc8 12.Nd2 Re8 13.Re1 e5 14.fe5 de5 15.Ne4 Qc7 16.Qc2 Re7 17.Re2 Rce8 18.Rf1 h6 19.f4 ef4 20.Rf4 Re6 21.Nf6 Bf6 22.Re6 Re6 23.Be4 Bb2 24.Qb2 Ne5 25.Qc2 Qd6 26.Bd5 Re7 27.d4 cd4 28.Qd2 d3 29.Kg2 Nc4 30.Bc4 Re2 31.Qe2 de2 32.Be2 Qd5 33.Kf2 Qa2 34.Rf6 Kg7 35.Rc6 Qd5 36.h4 h5 37.Rc7 Qd4 38.Kg2 Qe3 39.Bc4 Qe4 40.Kf2 Qf5 41.Kg2 Kf8 42.Be2 Qd5 43.Kf2 f6 44.Ra7 Qe6 45.Rc7 Qf5 46.Kg2 g5 47.hg5 Qg5 48.Kf3 Qg4 49.Kf2 h4 50.Bg4 1–0. Wiman,Daniel (2765) – Ivebrink,Pontus (2480), Hallstahammar Open (4), 2001.

3.Nf3 e6 (--> 1.b4 e6 2.Bb2 d6 3.Nf3 Nf6).

3.f4 Bf5 4.Nf3 (4.e3 e6=+) 4...Nbd7 (4...Nd5 5.Nd4 Bd7 6.g3=+) 5.d3 (5.Nd4 Be4 6.d3 Bg6=) 5...e5 (5...d5 6.a3=+) 6.e4= Bg4 7.Qd2 (7.Be2 ef4 8.0-0 c5=) 7...Bf3=+ 8.gf3 Be7 (8...Nh5 9.fe5 de5 10.a3=+) 9.Bh3 (9...c6 10.Rg1=). thotares (1695) – george, internet, 2007.

3.f4 g6 4.Nf3 Bg7 5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 d6 5.Nf3).

3.g3 e5 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6).

3.g3 c6 4.Bg2 g6 5.Nf3 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0 c6).

3.g3 Bf5 4.Bg2 Qd7?? 5.Bb7 (5.Bf6!? c5 6.Bc3 cb4 7.Bb4 Nc6+-) 5...Be4 6.Ba8 Ba8 7.Nf3 e6 (7...e5 8.a3+-) 8.Bf6 gf6 9.d3 Bg7 10.c3 Nc6 11.Nbd2 Ne7 12.a4 0-0 13.e4 (13.Rb1 f5 14.Qc2 Rb8+-) 13...d5 (13...f5 14.Ra3+-) 14.Qe2 Qc6 15.c4 White intends b5 15...f5 (15...de4 A) worse 16.Ne4 f5 17.b5 Qb7=+; B) 16.Qe4?! f5 17.Qc6 Nc6+/- (17...Bc6? 18.Ra3+-); C) 16.de4 f5 17.b5+-) 16.ed5 ed5 17.Rc1 White intends c5 (17.b5 Qd7 18.Rc1 dc4 19.Nc4 a6+-) 17...Qd6? (better 17...Qa4 18.b5 dc4 19.dc4 Bh6+-) 18.c5 Qd7 19.b5 c6 (19...Re8 20.Kd1+-) 20.0-0 Ng6 21.Rfe1 (21.d4 f4+-) 21...f4 (21...cb5 22.ab5 Qb5 23.d4 Qe2 24.Re2+-) 22.d4 fg3 (22...Qg4 23.Nb3+-) 23.hg3 cb5 (23...Qc7 24.Qe3+-) 24.ab5 Qg4 25.c6 (25.Ra1 Nf4 26.Qe3 Bh6+-) 25...Nf4 26.Qe3 Nh3 (26...Bh6 27.Qa3+-) 27.Kh2 (27.Kg2 h6+-) 27...Bf6 28.Ne5 (better 28.Ra1 Ng5 29.Ra7+-) 28...Bg5 (28...Be5 29.de5 Ng5+-) 29.Ng4 Be3 30.Re3 Ng5 31.Nf6 Kg7 32.Nd5 Ne6 33.Re6! fe6 34.Nc7 Rf2 (34...Kf6 35.Ne4 Ke7 36.Ra1 Bc6 37.bc6+-) 35.Kg1 Rd2 36.Na8 Rd4 37.c7 e5 38.c8Q Kf6 (38...Rd6 39.Qc7 Rd7 40.Qd7 Kg6 41.Qe6 Kg5 42.Rc5 a5 43.Re5) 39.Qc6 (39.Rc6 Rd6 40.Rd6 Kg5 41.Qe6 a5 42.ba6 e4 43.Rd5) 39...Kf5 40.Rf1 Kg4 41.Qf3 Kg5 42.Qf6 Kg4 (42...Kh5 43.Rf5 Kg4 44.Rg5 Kh3 45.Qf1) 43.Qf3 (43.Qh4) 43...Kg5 44.Qf6 Kg4 45.Qf3 (45.Qh4) ½-½. unpredictable (1960) - Vakamb (1970), Rated Blitz game, lichess.org, 2014.

3.h4 e5 4.Nf3 Be7 5.e3 0-0 6.c4 Bf5 7.Nc3 a5 8.b5 Nbd7 9.Ng5 h6 10.g4? (better 10.Nf3!?=+) 10...Bg4-+ (10...hg5 11.gf5 g4 12.Bg2+=; worse 10...Ng4 11.Qf3 hg5 12.Qf5=) 11.Qc2 Nc5 12.Nd5 (12.d4 ed4 (worse 12...hg5 13.hg5 Nh5 14.dc5+=) 13.ed4 Ncd7-/+ (worse 13...hg5 14.hg5 Re8 15.dc5=+)) 12...e4 13.Nf6 (13.Ne7 Qe7 14.Nh3 Bf3-+) 13...Bf6 14.f4? (14.Nh3-+) 14...hg5 (14...Bg5?! 15.hg5 hg5 16.d4-/+) 15.hg5 Bb2 16.Qb2 f6 17.Rh4 Bf3 18.g6 f5 19.Rh7 Qf6 20.Qf6 (20.d4 Qg6 21.Rh3 Nd3 22.Bd3 ed3-+) 20...Rf6 (20...gf6?! 21.Be2 Rfc8 22.Bf3 ef3 23.Kf1-+) 21.Kf2 Rg6 22.d4 (22.Rh2-+) 22...Kh7 (better 22...Nd3 23.Bd3 Rg2 24.Ke1 ed3 25.Rh4-+) 23.dc5 dc5 24.Bh3 Rf6 25.Rg1 (25.a3 Rd8 26.Ra2 Rd3-+) 25...g6 (25...Rd8!? 26.Rg5 Rd2 27.Kg1 Ra2 28.Bf5 Kg8 29.Bh3-+) 26.Rd1 (26.Bg2 Bg2 27.Rg2-+) 26…Bd1 (26...Bd1 27.Bf1 Rd6-+) 0-1. Master_kudabengal89 (2200) - alifie (2365), 2019 Spring Marathon, lichess.org, 2019.

3.h4 g6 4.c3 Bg7 5.d4 0-0 6.Nd2 Nbd7 7.e4 e5 8.d5 Nb6 9.Be2 Bd7 10.a4 a5 11.b5 Qc8 12.h5 Bg4 13.h6 Be2 14.Qe2 Bh8 15.f3 Nh5 16.Rh5 gh5 17.Qf2 f5 18.Qg3 Kf7 19.Qh4 Rg8 20.Qh5 Kf6 21.Qh4 Kf7 22.Qh5 Kf6 23.g4 Rg5 24.Qh4 fg4 25.fg4 Qg4 26.Qg4 Rg4 27.Ngf3 Kg6 28.c4 Kh6 29.c5 Nd7 30.cd6 cd6 31.0-0-0 Rc8 32.Kb1 Nc5 33.Nc4 Ne4 34.Rh1 Kg6 35.Na5 Nc3 36.Bc3 Rc3 37.Nh4 Kf6 38.Nb7 Ra4 39.Nd6 Ke7 40.Nhf5 Kd7 41.Rh7 Kd8 42.Rh8 Kc7 43.Rh7 Kb6 44.Rb7 Ka5 45.Ra7 Kb4 46.Ra4 Ka4 47.b6 1–0. beatmeeasy (1915) – Hurzzz (1865), lichess.org, 2020.

3.h4 h5 4.Nf3 g6 5.Bf6 ef6 6.Nc3 Bg7 7.d4 0-0 8.Qd3 Bg4 9.Nh2 Bf5 10.e4 Bd7 11.Rg1 (11.Nf3 f5 12.e5 de5 13.Ne5 Qe7=+) 11...Nc6 (11...f5 12.Kd2-+) 12.a3? (better 12.b5 Na5 13.Nf3=+) 12...f5-+ 13.Nf3? (13.g4 hg4 14.Ne2-+) 13...fe4 14.Ne4 Bf5 15.0-0-0 Re8 16.Nfd2 d5 (16...Nd4 17.c3 d5 18.cd4 de4 19.Qb3 Qd4 20.g4 Bg4 21.Bc4-+; 16...Bd4?! 17.g4 hg4 18.b5 Bf2 19.Rh1-+) 17.f3 Nd4 18.g4 (18.c3 Nc6 19.Qc2 Qh4 20.Bd3 de4 21.Be4 Be4 22.Ne4-+) 18...de4 19.fe4 Bg4 20.Rg4 hg4 21.c3 Ne6 22.Qg3 Qd7 23.Qg4 (23.Be2 Qa4 24.Nb1 a5-+) 23...Qa4 24.Kb2 c5 25.h5 (25.b5-+) 25...cb4 26.hg6 fg6 (26...bc3 27.Kb1 c2 28.Ka2 cd1Q 29.gf7 Kf7 30.Qf5 Kg8 31.Qh7 Kh7 32.Bc4 Qdc2) 27.Qg6 bc3 28.Kc1 cd2 (28...Qa3 29.Kc2 Nd4 30.Kd3 c2 31.Kc4 b5 32.Kd5 Rad8 33.Qd6 Qd6) 29.Rd2 Qa3 (29...Rac8 30.Bc4 Qc4 31.Kb1 Qb3 32.Rb2 Qb2) 30.Kd1-+ Qb3 (30...Qa1 31.Ke2 Nf4 32.Ke3 Ng6 33.Bc4 Kf8 34.Rf2 Bf6 35.Rf6 Qf6 36.Bd5 Rad8 37.Kd3 Rd5 38.ed5 Qf3 39.Kd4 Qe3 40.Kc4 Re4 41.Kb5 Qb6) 31.Ke1 Nf4 32.Qg4 Re4 (32...Re4 33.Be2 Rf8 34.Ra2 Nd3 35.Kd2 Qc3 36.Kd1 Qc1) 0-1. beatmeeasy (2025) - Salamandra1000 (2025), lichess.org, 2021.

4.c3 ab4 5.cb4 e6 6.e3 Be7 7.Nf3 0-0 8.Be2 d5 9.0-0 c5 10.d4 (10.bc5!? Bc5 11.Qb3=) 10...cb4=+ 11.ab4 Ra1 12.Ba1 Bb4 13.Qb3 Bd6 14.Bc3 Nc6 15.Nbd2 Na5 16.Ba5 (16.Qb5 b6=+) 16...Qa5 17.Rc1 Bd7 18.Qb7 Rb8 19.Nb3?? (better 19.Qa6 Qa6 20.Ba6=+) 19...Qa3 (19...Rb7?! 20.Na5 Rb2 21.Kf1=+) 20.Qb8 (20.Qa6 Qa6 21.Ba6 Rb3-+) 20...Bb8 21.Nfd2 Ba4 (21...Kf8 22.Bd3-+) 22.Ra1?? (better 22.Rc8 Be8 23.Rb8-/+) 22...Qb4-+ 23.Bd1 (23.Rb1 Bd6 24.Bf3 Bb3 25.Nb3 Qc4-+) 23...Bd6 (23...Bb3!? 24.Rc1 Kf8 25.Nf3-+) 24.Rb1 (24.Bc2 e5-+) 24...h5 (better 24...Ne4 25.Bc2 Nd2 26.Nd2 Qd2 27.Ba4-+) 25.Bc2 g6 26.Nc5 (26.Nf3 Qc3 27.Ne1 Ng4-+) 26...Bc5 (better 26...Qd2 27.Ba4 Ng4-+) 27.Rb4 Bb4 28.Ba4 Bd2 29.Bb5 Ne4 30.Bd3 Bb4 31.f3 Nd6 32.Kf2 Kg7 33.g3 f6 34.h3 g5 35.e4 de4 (35...f5!? 36.ef5 Nf5 37.Bf5 ef5 38.Ke3-+) 36.fe4 Bc3 37.Ke3 e5 (37...g4 38.hg4 hg4 39.Kf4 Bd4 40.Kg4-+) 38.de5 (38.d5 Bd4 39.Kf3 Kf7-+) 38...Be5 39.g4 h4 40.Be2 Ne8 41.Bf3 (41.Bc4 Kf8-+) 41...Nc7 42.Bg2 Ne6 43.Kf2 Nf4 44.Ke3 (44.Kf3-+) 44...Ng2 45.Kf2 Nf4 46.Kf3 Nh3 47.Ke3 (47.Kg2 Nf4 48.Kg1 Ne2 49.Kg2-+) 47...Nf4 48.Kf3 Ng2! 49.Kg2 Bf4 50.Kf3 Kf7 51.Kg2 Ke6 52.Kh3 If White now only could play Kd6... 52...Ke5 53.Kg2 Ke4 54.Kh3 (54.Kf1 Ke3 55.Ke1 h3 56.Kd1 Kd3 57.Ke1 Be3 58.Kf1 Bc5 59.Ke1 h2 60.Kf1 h1Q) 54…Kf3 (54...f5 55.Kg2 h3 56.Kg1 Kf3 57.gf5 g4 58.f6 g3 59.f7 h2 60.Kh1 g2) ½-½. Gehaktbalmetjus (2035) - elotronick (2090), Rated Bullet game, lichess.org, 2020.

4.e3 ab4 5.ab4 Ra1 6.Ba1 e5 7.Nf3 Be7 8.Be2 0-0 9.0-0 c6 10.d4 ed4 (10...e4 11.Nfd2=+) 11.Nd4 d5 12.b5 h6 13.bc6 Nc6 14.Nc6 (14.Qd3 Bd6+=) 14...bc6= 15.c4 Be6 16.cd5 Nd5 17.Nc3 Bf6 (17...Nc3!? 18.Bc3 Qd1 19.Rd1 Rb8=+) 18.Nd5= Bd5 19.Bf6 Qf6 20.Bf3 (20.Qb1 Qe6=) 20...Rd8 (20...Bf3 21.Qf3 Qf3 22.gf3=+) 21.Bd5= Rd5 22.Qc2 g6 23.Rc1 c5 24.g3 h5 25.Qc3 (25.e4 Rd4=) 25...Qc3 (25...Rd1 26.Kg2 Qc6 27.f3 Rc1 28.Qc1=+) 26.Rc3= Kg7 27.Kg2 Kf6 28.Kf3 Ke5 29.h4 f5 30.Rc4 Kd6 31.Ke2 Re5 32.f4 (32.Ra4!? Kd5 33.Kd3=) 32...Re8 33.Kd3 Kd5 (33...Ra8 34.Rc2-/+) 34.Rc3 (34.Ra4 Re6=+) 34...Rc8 (34...Ra8 35.Rc2-/+) 35.Rc2 (35.Ra3 Rc6 36.Ra5 Rb6-/+) 35...c4-/+ 36.Kc3? (better 36.Ke2!?-/+) 36...Ke4-+ 37.Rd2 Rc7?? (better 37...Rc6 38.Re2 Kf3-+) 38.Rd6-/+ Ke3 (better 38...Rg7!?-/+) 39.Rg6= Kf3 40.Rg5 Rc5 41.Rh5 (better 41.Rg8!?=) 41...Kg3-/+ 42.Rg5 Kf4 43.h5?? (better 43.Rg6 Ke4 44.h5-/+) 43...Kg5-+ 44.h6 Kh6 45.Kd4 Black now must not overlook the idea Rc7 45...Rc8 46.Kc3 (46.Ke5 c3 47.Kf5 c2 48.Kf4 c1Q 49.Ke4 Qc4 50.Ke5 Re8 51.Kd6 Re6 52.Kd7 Qc6 53.Kd8 Re8) 46...f4 47.Kc2 (47.Kd4 c3 48.Ke5 c2 49.Kf4 Re8 50.Kf3 c1Q 51.Kg3 Qg1 52.Kf4 Re3 53.Kf5 Qg5) 47...f3 (47...c3 48.Kb3 c2 49.Kb2 c1Q 50.Ka2 Ra8 51.Kb3 Rb8 52.Ka4 Qa1) 48.Kc3 (48.Kb2 c3 49.Kc1 c2 50.Kd2 c1Q 51.Kd3 Qc4 52.Ke3 Re8 53.Kf3 Qd3 54.Kf4 Re4 55.Kf5 Qf3) 48...f2 49.Kc2 f1Q 50.Kc3 (50.Kd2 Rd8 51.Ke3 Rd3 52.Ke4 Kg6 53.Ke5 Qf5) 50...Qd3 51.Kb2 c3 52.Kc1 (52.Ka3 Rb8 53.Ka4 Qa6) 52...Qd2 53.Kb1 Qb2 0-1. Gehaktbalmetjus (2110) - daur89 (2325), Rated Bullet game, lichess.org, 2019.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 e6 7.e3 Be7 8.Be2 0-0 9.0-0 b6 10.d4 Bb7 11.Nbd2 Nbd7 12.c4 c5 13.bc5 bc5 14.dc5 Nc5 15.Nb3 Nce4 16.Nfd4 Qb6 17.Bf3 Rc8 18.Ne2 (18.Qd3!?=+) 18...Rc4-/+ 19.Nbd4 Rc8 20.Be4 Be4 21.Ng3 Bd5 (21...Bg6 22.f4 Ne4 23.Qg4-+) 22.Qb1 (22.Ndf5 Qd8-/+) 22...Qa6 23.h3 h6 (better 23...Qa8 24.f3 Bc4-+) 24.Qb5? (24.e4 Ba2 25.Qb4 Bc4-/+) 24...Qb5 (better 24...Qa8!?-+) 25.Nb5 Bc4 26.Rc1 Ra8?? (26...d5 27.Be5-+) 27.Rc4?? (better 27.Bf6 Bf6 28.Rc4+-) 27...Ra1-/+ 28.Kh2 g6 29.Rc7 Bf8 30.Rc8 Rb1 (better 30...d5-+) 31.Nd6= Rf1?? (31...Kg7 32.Nge4=) 32.f3 (better 32.Nf1 Kg7 33.Nb7+-) 32...Re1 33.e4 Kg7 34.Nc4 Rc1 35.Rc6 Be7 36.Ne5 Rc6 37.Nc6 Kf8 38.Ne7 Ke7 39.h4 h5 40.Ne2 Nd7 41.Kg3 Ne5 42.Kf4 Nd3 43.Ke3 Ne1 44.g4 (better 44.g3=) 44...Nc2?? (better 44...hg4!? 45.fg4 Ng2 46.Kd3 Nh4-/+) 45.Kd3 (45.Kd2 hg4 46.Kc2 gf3+/-) 45...Nb4 46.Ke3 Nc6 (46...Nc2 47.Kd2 hg4 48.Kc2 gf3 49.Ng3+/-) 47.Kf4 (better 47.gh5!? gh5 48.Ng3+/-) 47...e5= 48.Kg3 Ke6 49.Nc3 Nd4 50.Nd5 f5 51.Nc7 Kd7 52.ef5 gf5 (52...Kc7 53.fg6 Nc6 54.gh5+-) 53.Nd5 f4 (53...hg4 54.fg4 Ke6 55.Nf4 Kf7 56.Nd3=) 54.Kf2 (54.Nf4 ef4 55.Kf4 Ke6+=) 54...Kd6 (54...hg4 55.fg4 Ke6 56.h5=) 55.Nf6 Ne6 (better 55...hg4!? 56.fg4 Ke6+=) 56.Nh5+- Ng7?? (56...Ke7!? 57.g5 Kf7 58.Nf6+/-) 57.Nf6 (better 57.Ng7 Ke7 58.g5+-) 57...Ne6 58.Ne4 Kd5 (58...Ke7 59.h5+-) 59.Ng5 Nd4 60.Nf7 (better 60.h5!? Nc6+-) 60...Ke6 61.Ne5?? (better 61.Nd8 Kf6 62.Nb7+-) 61...Ke5-/+ 62.h5 Ne6 63.h6?? (better 63.Ke2!?=+) 63...Ng5 (better 63...Kf6-+) 64.h7?? (better 64.Ke2-+) 64...Nh7 65.g5 (65.g5 Ng5 66.Ke2-+). Mr_Improvise (2325) - almasssss (2320), Rated Bullet game, lichess.org, 2020.

4.bc5 dc5 5.e3 Nc6 6.Nf3 e5 (better 6...e6!?=) 7.Ne5+/- Bd6 (7...Ne5!? 8.Be5 Be7+/-) 8.Nc6+- bc6 9.Be2 (9.Qf3 Rb8 10.Qc6 Kf8 11.Bf6 Qf6+-) 9...0-0 10.0-0 c4 11.Bc4 Bh2? (better 11...Rb8 12.Ra2 Bg4 13.Bf6 Bd1 14.Bd8 Rb1+-) 12.Kh2+- Ng4 13.Kg3 Qg5 14.f4 Qg6 15.Kf3?? (better 15.Bd3 f5 16.Bc4 Kh8 17.Kf3+-) 15...Ne5+/- 16.Be5 (16.fe5? Bg4 17.Kf2 Bd1-+) 16...Bg4 17.Kf2 Bd1 18.Rd1 Qc2 19.Nc3 Qf5 20.Be2 (better 20.e4!? Qg4 21.d4+-) 20...f6+= 21.g4 Qd7 22.Bd4 Rfe8 23.Bf3 Rac8 24.Na4 f5 (24...Qc7 25.Rac1 Qd6 26.Nc5+/-) 25.g5 c5? (better 25...Qc7!?+/-) 26.Nc5+- Qe7?? (26...Qf7 27.Rab1 Re7 28.Rb7 Rb7 29.Nb7+- (29.Bb7?! Rc5 30.Bc5 Qb7+=)) 27.Rac1 (better 27.Bd5 Kf8 28.Ne6 Qe6 29.Be6 Re6 30.Ba7+-) 27...Red8 28.Nb7 Rc1 29.Rc1 Qa3 (29...Rd4 30.Rc8 Kf7 31.ed4 Qa3 32.Bd5 Kg6+-) 30.Ra1 (30.Nd8?! Qc1 31.Bd5 Kf8+-) 30...Qe7 (30...Qa1 31.Ba1 (31.Nd8?! Qa5 32.Nc6 Qd2 33.Kg3 Kf7+/-) 31...Rd2 32.Ke1+-) 31.Nd8 Qd8 32.Ra7 g6 (32...Qd6 33.Rg7 Kf8 34.Rh7+-) 33.Rg7 (better 33.Ra8 Qa8 34.Ba8 Kf8+-) 33...Kf8 34.Rh7 Qa5 35.Bc3 Qc5 36.Rh8 (36.Bh5 Qd6+-) 36...Kf7 37.Rh7 Kg8?? (37...Kf8 38.Bh5 Qd6+-) 38.Rg7 (better 38.Rd7 Qb6+-) 38...Kf8 39.Rg6 Kf7 (39...Ke7+-) 40.Rf6 Kg8 41.Be2 (41.Be2 Qd5 42.g6+-) 1-0. muhammadaudii (2140) - mohamad19680000 (2035), lichess.org, 2020.

4.e3 cb4 5.ab4 Bd7 6.Nf3 g6 (6...e5 7.Nc3=) 7.Be2 Bg7 8.0-0 0-0 9.d4 Nc6 (9...Qb6 10.Qe1 Nd5=) 10.Nbd2 (better 10.b5!? Nb8 11.c4+=) 10...Nb4=+ 11.c4 Nc6 12.Qb3 Rb8 13.d5 Ne5?? (better 13...Na5 14.Qa2 b6=+) 14.Ra7 (14.Ne5 de5 15.Be5 Ne4 16.Bb8 Nd2 17.Qb7 Nf1 18.Rf1 Qb8 19.Qd7 Bf6+/-) 14...Nf3 15.Bf3 (15.Nf3 b5 16.cb5 Bb5 17.Bb5 Qb6 18.Re7 Qb5 19.Qb5 Rb5 20.Bf6 Bf6+=) 15...b5+= 16.cb5 Rb5 17.Qa2 Qb8?? (17...e5 18.e4+=) 18.Rb1 (better 18.Bf6 Bf6 19.Rd7+-) 18...Bf5 19.Bf6?? (better 19.e4 Be4 20.Ne4 Ne4 21.Be4 (21.Re7? Nd2-+) 21...Rb2 22.Rb2 Bb2 23.Re7=+) 19...Rb1 (better 19...Bb1 20.Qc4 Bf6 21.Ra8 Qa8 22.Qb5-+) 20.Nb1 Bf6 (better 20...Bb1 21.Qa6 Bf6-+ (21...ef6?! 22.Rb7 Qc8 23.Qc6-+)) 21.Nd2=+ Bc3 (21...Rc8 22.Ra3 Rc1 23.Nf1 Qb4-/+) 22.e4= Bd2 23.ef5 gf5 (better 23...Rc8 24.g4 gf5 25.Re7 Qb4=+) 24.Qd2?? (better 24.Re7 Bg5 25.Re1+/-) 24...Qa7-+ 25.Qg5 Kh8 26.Qf5?? (26.g3-+) 26...Qa1 27.Qb1 Qb1 28.Bd1 Qd1 0-1. Gehaktbalmetjus (2025) - reedjean (2030), Rated Bullet game, lichess.org, 2020.

4.c4 b6 (4...e5 5.Nc3=) 5.e3 a6 6.Nf3 Bb7 (6...e5 7.Nc3=) 7.Be2 (7.d4 d5+=) 7...Nbd7 (7...e5 8.0-0+=) 8.d3 (8.0-0 Qc7+=) 8...g6 (8...e6 9.Nc3=) 9.Nbd2 (9.Nc3 Bg7+=) 9...Bg7= 10.0-0 0-0 11.h3 (11.Qc2 c5=) 11...Re8 12.Qc2 e5 (12...c5 13.e4=) 13.e4 (13.Ne4 Qc7=) 13...Rc8 (13...Qe7 14.Rfe1=) 14.Rac1 (14.a4 d5=) 14...Qe7 15.Qb3 (15.Rfd1 Rcd8=) 15...d5 16.cd5 (16.Rfe1 d4=) 16...cd5+= 17.Rc8 Rc8 18.Rc1 de4 (18...Rc1 19.Bc1 Qd6 20.Qc2+=) 19.Ne4 (19.Rc8 Bc8 20.de4 Bb7+=) 19...Ne4 (19...Rc1 20.Bc1 Nd5 21.Bd2+=) 20.de4 (20.Rc8 Bc8 21.de4 Bb7=) 20...Rc1 21.Bc1 Be4 (21...Nf6 22.Qe3 Qc7= (worse is 22...Be4 23.Qb6 Bb7 24.Ba6 Bf3 25.gf3+/–)) 22.Bb2 (better is 22.Ng5!? Bf5 23.Bc4=) 22...b5 23.a4 (23.Qc3 Qe8–/+) 23...ba4 (23...Bf3 24.Bf3 e4 25.Bg7 ef3 26.Qc3 ba4 27.Bh6–/+) 24.Qa4 Qd6 (24...Bf3 25.Bf3 e4 26.Bg7 ef3 27.Qa1–/+) 25.Qa6 (25.Ba6 Bf3 26.gf3–/+) 25...Qa6 (better is 25...Qb4!? 26.Qc8 Nf8–/+) 26.Ba6= Bf3 27.gf3 f6 (27...Kf8 28.b5=) 28.b5 (28.Bb5 Nb8=) 28...Nb6 (28...Kf7 29.Kf1=) 29.Ba3 (29.Bc1 Kf7+=) 29...Kf7= 30.Bc5 Nc8?? (better is 30...Nd7 31.Be3 f5=) 31.Bc8+- f5 32.b6 Bf6 33.b7 Bd8 34.b8Q Ke8 (34...Bc7 35.Qc7 Kg8 36.Be6 Kh8 37.Qe5) 35.Ba6 (35.Qd6 Bb6 36.Qd7) 35...Kd7 (35...Kf7 36.Qd8 g5 37.Bc4 Kg6 38.Qg8 Kh6 39.Bf8 Kh5 40.Qh7) 36.Bb5 (36.Qd6 Ke8 37.Qe6 Be7 38.Qe7) 36...Ke6 37.Qd8 e4 (37...f4 38.Qe7 Kd5 39.Qd6) 38.fe4 (38.Bc4 Ke5 39.Qd6) 38...fe4 (38...Ke5 39.Qd6 Ke4 40.Bc6) 39.Qd6 (39.Bd4 e3 40.Qd7) 39...Kf5 40.Be2 (40.Be3 g5 41.Bd7) 40...e3 (40...h5 41.Bd4 Kg5 42.Bg7 e3 43.Qf6) 41.fe3 (41.Be3 g5 42.Bd3) 41...g5 (41...h5 42.Bd3 Kg5 43.Qf4) 42.Qg3 (42.Bd3) 42...g4 (42...Kf6 43.Bd4 Ke6 44.Qe5 Kd7 45.Bg4 Kc6 46.Qc5 Kb7 47.Qc8) 43.h4 (43.Bd3 Kg5 44.Be7 Kh6 45.Qf4 Kh5 46.hg4) 43...h5 (43...Kg6 44.Bd3 Kh5 45.Qe5 Kh4 46.Be7 Kh3 47.Qh2) 44.Qg4! hg4 45.Bg4! Kg4 46.Bd4 (better is 46.Be7+-) 46...Kh4 47.e4 (47.Kf2 Kg5+-) 47...Kg4 48.e5 Kf4 (48...Kf5+-) 49.e6 Kf5 ½–½. Fournier,Frederic – Fenix_ (1625), Partie amicale, 1m + 0s, 2009.

4.e3 Bg4 5.Be2 Be2 6.Ne2 Nbd7 7.0-0 Qc7 8.d4 (8.c4 e6=) 8...e5 (8...d5 9.Nd2=) 9.de5 (9.c4 Be7+=) 9...de5= 10.c4 Be7 11.c5 0-0 12.Nbc3 Rfd8 13.Qc2 b6 14.cb6 ab6 15.Rad1 c5 16.b5 Nf8 17.a4 Ne6 18.Rd8 Rd8 19.Rd1 Rd1 20.Qd1 h6 (20...c4 21.Qc2=) 21.f3 (21.Nd5 Nd5 22.Qd5 Qd6=) 21...Qd8 (21...c4 22.e4=+) 22.Qd8= Bd8 23.e4 Nd4 24.Nd4 (24.Kf2!?=) 24...ed4=+ 25.Nb1 Bc7 26.Nd2 Bf4 27.Nc4 Bc7 28.Kf2 (28.Nd2 Nd7=+) 28...Nd7=+ 29.g3 Ne5 30.Ne5 Be5 31.f4 Bc7 32.e5 Kf8 (32...f6 33.ef6 gf6 34.Ke2=+) 33.Kf3 (33.Ba3 Ke8 34.a5 Kd7+/-) 33...Ke7= 34.Ke4 f6 35.ef6 Kf6 36.h3 (36.a5 ba5 37.Kd5 Kf5+=) 36...g5 (36...Ke6!?=+) 37.fg5 (37.Bc1 Kg6+=) 37...hg5= 38.g4 (better 38.Kd5 Kg6 39.a5 ba5 40.Kc5=) 38...Be5?? (better 38...Ke6!?=+) 39.Bc1 (39.Kd5!?+/-) 39...c4 40.Ba3?? (better 40.a5 ba5 41.b6+=) 40...d3=+ 41.Bb4 Ke6 42.a5 ba5 43.Ba5 Bb2?? (43...Bf4 44.Kd4-/+) 44.Bd2?? (better 44.b6+-) 44...c3 45.Kd3 cd2 46.Kd2 Bd4 (46...Kd7 47.Ke3-/+) 47.h4? (47.b6=) 47...Bb6?? (better 47...gh4 48.Ke2 h3-+) 48.h5 (48.hg5 Kf7+=) 48...Kf7 49.Ke2 Kg7 50.Kf3 Kh6?? (better 50...Kf7=) 51.Ke4+- Bc7 52.Kf5 Bf4 53.Ke6 Bb8 54.Kf5 Bf4 55.Kf6 (55.b6 Bg3+-) 55...Bb8 (55...Be3+-) 56.Ke7 Bf4 57.Kd8 Bb8 58.b6 Bf4 59.Kc8 Bb8 (59...Kg7+-) 60.b7 (60.b7 Be5 61.b8Q Bb8 62.Kb8+-; 60.Kb8 Kg7 61.Kc7 Kf6 62.Kd6 Kf7 63.b7 Kg8 64.b8Q Kg7 65.Qb2 Kh7 66.Qf6 Kg8 67.h6 Kh7 68.Qg7) 1-0. Gehaktbalmetjus (2105) - nelsonmega (2105), Rated Bullet game, lichess.org, 2020.

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 7.d4 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 Nbd7 11.Nbd2 Nb6 (11...b5 12.e4=) 12.c4+= Bf5 13.c5 (13.Nh4 Be6+=) 13...Nbd7 14.h3 h5 (14...Qc7 15.Nh4 Be6 16.e4=) 15.Nc4 Ne4 16.Nfd2 d5 17.Ne4 dc4 (better 17...Be4!? 18.Na5 Qc7=) 18.Nd2+/- Bd3 19.Bd3 cd3 20.Nf3 e5 (20...Nf6 21.Qd3 Qd5 22.Qa3+/-) 21.Qd3 ed4 22.Bd4 Bd4 23.Qd4 Nf6 24.Rd1 Qa8?? (better 24...Qd4 25.Rd4 Ra8+-) 25.Qf6 1-0. Gehaktbalmetjus (2060) - hydrapulse (2165), Rated Bullet game, lichess.org, 2019.

4.e3 h5 5.Nf3 Bg4 6.Be2 Qc8 (6...e5 7.0-0+=) 7.h3 Bd7 8.c4 Na6 9.d4 Nc7 10.c5 a6 11.Nc3 d5 12.Qc2 (12.Ne5 Bf5+/-) 12...g6 13.e4 (13.Na4 Bf5 14.Qd1 Qd8+/-) 13...de4+= 14.Ne4 Bf5 15.Nf6 ef6 16.Bd3 Be6 (16...Qe6 17.Kf1 Bd3 18.Qd3=) 17.0-0-0 (17.0-0!?+=) 17...Nd5 18.Rhe1 Be7 19.Bg6? (better 19.Kb1=) 19...fg6-+ 20.Qg6 Bf7 21.Qe4 Qd7 22.Nh4 Kd8 23.Nf5 Be6?? (better 23...Bg6 24.g4 hg4 25.hg4 a5 26.ba5 Ra5-+) 24.Qe6+- Qe6 25.Re6 Kd7 26.Rde1 Rae8 27.Nd6 (better 27.f3!? Rh7 28.Kd2 Rg8+-) 27...Bd6 28.Rd6 Kc7 29.Re8 (29.Rde6 Re6 30.Re6 h4+-) 29...Re8+/- 30.Kc2?? (better 30.Kd2+/-) 30...Re2=+ 31.Kb3 (31.Kb1 Rf2 32.g4 hg4 33.hg4 Rg2=+) 31...Rf2-/+ 32.Re6 (better 32.g4!?-/+) 32...Rg2-+ 33.Re8 Rh2 34.Rg8 Rh3 35.Ka4 (35.Kc2 Rh2 36.Kb3 h4-+) 35...h4 36.Rg7 Kb8 37.Bc1 Rh1 38.Bh6 (38.Bb2 h3 39.Kb3 f5-+) 38...h3 39.Rg8 Ka7 40.Bf8 (40.Rg3-+) 40...h2 41.Bd6 (41.Rh8-+) 41...b6 (better 41...b5 42.cb6 Nb6 43.Ka5 Nc4 44.Ka4 Ra1-+) 42.Rg7= Ka8 43.Rg8?? (better 43.cb6 Nb6 44.Ka5=) 43...Kb7-+ 44.Rb8 Ka7 (44...Ka7 45.Rb6 Nb6 46.cb6 Kb7-+) 0-1. Gehaktbalmetjus (2120) - Biobeat (2145), Rated Bullet game, lichess.org, 2020.

4.Bf6 ef6 5.e3 Be6=.

4.c4 e5 5.d4 ed4 6.Nf3 (6.Bd4 a5=) 6...Be7 (better 6...c5!?-/+) 7.Nd4= Ne5 8.e3 0-0 9.Nd2 Re8 (9...c5 10.N4f3=) 10.N2f3 (10.Be2 a5=) 10...Nf3 11.Nf3 Bf8 (11...Ne4 12.Bd3 Bf6 13.Qc2 Bb2 14.Qb2=) 12.Bd3+= Bg4 13.h3 Bh5 14.0-0 Ne4 15.Rc1 Ng5 (15...Qe7 16.Bd4=) 16.Be2 Ne4 17.Qd4 (17.Qd5 Bg6+=) 17...Qe7 (17...a5 18.b5=) 18.Rfd1 (18.Qd5 Bg6+=) 18...a6 19.a4 (19.Rc2 a5=) 19...Rad8 (19...a5 20.b5=+) 20.b5 (20.Rb1 b6=) 20...c5 (20...Ra8 21.Ra1=) 21.bc6 (21.Qd3 Bg6 22.Qb3 Ra8+=) 21...bc6= 22.Re1 (22.a5 Rb8 23.Bc3 Rb3=+) 22...c5 (22...Rb8 23.Nd2 Be2 24.Re2=+) 23.Qd5= Bg6 24.Rcd1 Rb8 25.Ba1 Rb3 26.h4 h6 27.g4?? (better 27.h5 Bh7 28.Bd3=) 27...Nf2!-+ 28.Kf2 Qe3 29.Kg2 (29.Kf1 Be4 30.Qd2 Bf3 31.Qe3 Rbe3 32.Bf3 Rf3 33.Kg2 Re1 34.Re1-+) 29...Be4 30.Qd2 (30.Rd3 Rd3 31.Qd3 Bd3 32.Bd3 Qd3 33.Re8 Qc4 34.Kg3-+) 30...Bf3 31.Kh2 (31.Kg3 Qe4 32.Kh2 Qg4 33.Bf3 Rf3 34.Qg2 Qh4 35.Kg1 Re1 36.Re1 Qe1 37.Kh2 Rd3 38.Bf6 d5 39.Bd4 Bd6 40.Be5 Be5 41.Qg3 Qg3 42.Kh1 Rd1) 31...Qe5 (31...Qf2 32.Kh3 Qg2) 32.Kh3 (better 32.Be5 de5 33.Bf3 Rf3 34.Qd7+-) 32...Be2 (32...Bg4 33.Kg2 Qg3 34.Kh1 Qh3 35.Kg1 Rg3 36.Kf2 Qg2) 33.Kg2 Qg3 34.Kh1 Bf3 (34...Bf3 35.Qg2 Qg2) 0-1. diotarolo (2055) - Kasparova (2015), Rated Blitz game, lichess.org, 2014.

4.e3 b6 5.d4 Bb7 6.Nf3 e6 7.c4 Be7 8.Be2 0-0 9.Nbd2 c5 10.dc5 dc5 11.b5 Ne4 12.Ne4 Be4 13.0-0 Bf6 14.Bf6 Nf6 15.Qd8 Rfd8 16.Rfd1 Kf8 17.Kf1 Ke7 18.Ke1 Bf3 19.Bf3+= Rd1 20.Rd1 Rd8 21.Rd8 Kd8 22.Kd2 Kc7 23.Kd3 Kd6 24.h3 e5 25.Be4 g6 26.g3 Nd7 27.Bd5 f5 28.f4 Nf6 29.Bg2 Nh5 30.fe5 Ke5 31.g4 fg4 32.hg4 Nf6 33.Bf3 g5 34.a4 h5 35.gh5 g4 36.Be2 g3 37.h6?? g2–+ 0–1. Fournier,Frederic (1765) – ALAdemosca (1725), Active, 2008.

4.e3 c6 5.Nf3 Qc7 6.Be2 e5 7.0-0 Be7 8.d4 0-0 9.de5 de5 10.c4 b6 11.Nc3 Bb7 12.Qc2 Rad8 (12...a5 13.b5=) 13.Rad1 (13.Rfd1 a6+=) 13...Rfe8 (13...a5 14.ba5 ba5 15.Nh4=) 14.Rd2 c5 15.b5 Nf8 (15...e4 16.Nh4=) 16.Rfd1 Ne6? (16...e4!? 17.Rd8 Rd8 18.Rd8 Qd8=) 17.Rd8 (17.Nd5!? Nd5 18.cd5+-) 17...Rd8+/- 18.Rd8 Bd8 19.Nd1 Nd7 20.Bd3 (20.h3 Be7+=) 20...g6 (20...Bf3!? 21.gf3 Ng5=) 21.Be4+/- Bf6 22.Bb7 Qb7 23.Nd2 (23.Nc3 Bg7+/-) 23...Bg7+= 24.f3 Nf6? (24...a6 25.ba6 Qa6 26.Nc3+=) 25.Kf2 (25.Be5 a6+/-) 25...Bf8 (25...Qc7 26.Nc3=) 26.Ne4 (better 26.Be5 Nd7 27.Bb2+/-) 26...Ne4= 27.Qe4 Qe4 28.fe4 Bg7 29.h4 f6 30.g3 Kf7 31.Kf3 g5 32.Nf2 gh4 33.gh4 Kg6 34.Kg4 h5 35.Kf3 f5?? (better 35...Nd8=+) 36.Nd3+- fe4 37.Ke4 Kf6 (37...Bf6 38.Ne5 Kg7 39.Kf5+-) 38.Kd5 (38.Be5 Ke7+-) 38...Kf5? (38...Ke7+-) 39.Nf2 (better 39.e4 Kf6 40.Be5 Ke7 41.Bg7 Ng7 42.Kc6+-) 39...Nf8 (39...Nc7 40.Kc6 Ne8=) 40.Kc6?? (40.e4 Kf4 41.Nd3 Kg3 42.Ne5+- (42.Be5?! Be5 43.Ke5 Kh4=)) 40...Ng6 (better 40...Bf6!?-/+) 41.Kb7 Nh4? (better 41...Bf6 42.e4 Ke6 43.Ka7 Bh4=) 42.Ka7+- e4?? (42...Ng2 43.Bc1 e4 44.Kb6 Bh6 45.Kc5 Ne3+-) 43.Kb6 (better 43.Bg7 Ng2 44.Kb6 Ne3 45.Kc5 Nc4 46.Kc4+-) 43...Bb2-/+ 44.Kc5 Ba3 45.Kc6 Ng6 (45...Ng2 46.Nd1 Bf8 47.c5=) 46.b6 Ne7?? (better 46...Ne5 47.Kd5 Nd3=+) 47.Kd7+/- Nc8?? (better 47...Ng6 48.b7 Ne5 49.Kc8 Bd6+/-) 48.b7+- Nb6 49.Kc7 (better 49.Kc6 Nc4 50.b8Q Ne5 51.Kd5 Ng6+-) 49...Bd6 (better 49...Nc4 50.Kd7 Bd6-+) 50.Kd6+- Nc8 (50...Nc8 51.bc8Q Kg5 52.Qg8 Kh6 53.Ke5 h4 54.Kf5 h3 55.Qg6). Gehaktbalmetjus (2060) - danielbolanosd (2110), Rated Bullet game, lichess.org, 2020,

4.e3 c6 5.Nf3 Qc7 6.Be2 e5 7.0-0 Be7 8.d4 Nf8 9.de5+/- de5 10.Be5 Qb6 (10...Qd7 11.c4+/-) 11.Bd4 Qc7 12.c4 Ng6 13.c5 Be6 14.Nbd2 Rd8 15.Bc4 0-0 16.Qb3 Bc4 17.Qc4 Nd5 18.Rad1 Nh4 (18...Rd7!?+/-) 19.Nh4+- Bh4 20.Nf3 (20.Bg7 Bf2 21.Rf2 Kg7+-) 20...Bf6 21.Bf6 (21.e4 Bd4 22.ed5 Bf6+-) 21...Nf6+/- 22.Qh4 Nd5 23.Ng5 h6 (23...Nf6 24.Ne4 Ne4 25.Qe4+/-) 24.Ne4+- Rfe8 25.Nd6 Re6 26.Rd4 Rg6 (26...Qe7 27.Qe7 Re7 28.Nf5+-) 27.Rg4 (better 27.Nb7!? Rd7 28.Nd6+-) 27...Rg4 28.Qg4 Nf6 29.Qf5 Rd7 (29...Ne8 30.Ne8 Re8 31.Rd1+-) 30.Rd1 b6 31.e4 bc5 32.bc5 Qa5 33.e5 (better 33.Rb1 Qd8 34.e5+-) 33...Qa4?? (better 33...Qc5 34.g4 Qa3+/-) 34.Rf1 (better 34.Rb1!? Rd8 35.ef6 Qd4 36.fg7 Qg7+-) 34...Qf4 (34...Qa5 35.h3 Qc5+-) 35.Qf4 (35.Qf4 Nd5 36.Qg4+-) 1-0. Gehaktbalmetjus (2120) - martijndeboorder (2125), Rated Bullet game, lichess.org, 2019.

4.e3 e5 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Nbd7).

6.d4 0-0 7.c4 b6 8.Bd3 Bb7 9.Nbd2 Rb8 10.0-0 a6 11.Rc1 e6 12.c5 dc5 13.dc5 b5 14.c6+/– Bc6? 15.Rc6+- Nb6 16.Nb3 Qe7 17.Qc2 Rfd8 18.Rc7 Qe8 19.Na5 Nfd5 20.Bg7 Nc7 21.Be5 Rbc8 22.Bc7 Rd7? 23.Qb1 Rdc7 24.Rd1 Qe7 25.h3 Nd5 26.Qb2 Nc3 27.Rd2 Na4 28.Qe5 Nc3 29.Nb3 Nd5 30.Nc5 Qf6 31.Qf6 Nf6 32.Be2 Nd5 33.Nd4 a5 (33...a5 34.Nb5 Re7+-) 1–0. Fournier,Frederic – jtokumura, Active, 2008.

7.0-0 c5 8.c4 cb4 9.ab4 Qb6 10.b5 Qc7 11.d4 b6 (11...Nb6 12.Nbd2+=) 12.Re1 Bb7 13.Nbd2 d5 (13...a6+=) 14.c5 (better 14.Ba3!?+-) 14...bc5=+ 15.dc5 Qc5 (15...Nc5 16.Rc1 Qb6 17.Bd4=+) 16.Ba3+= Qb6 17.Be7 Rfe8 18.Bf6 Bf6 19.Rc1 Ne5 20.Nd4 (20.Ne5 Be5 21.Nf3 Bg7+=) 20...Nd7 (better 20...a6=) 21.f4?? (better 21.N2b3+=) 21...Bd4 (better 21...Re3 22.N2f3 Re4–+) 22.ed4–/+ Qd4 23.Kh1 Nf6 (23...Qf4 24.Nb3–/+) 24.Bf3 (24.f5!?–/+) 24...Re1–+ 25.Qe1 Re8 26.Qd1 Bc8 27.Qc2 (27.Ra1 Bd7–+) 27...Bg4 (27...Bd7 28.g3–+) 28.Bg4 Ng4 Threatening mate... how? 29.h3? (better 29.Nf3 Qf4 30.Qc6–+) 29...Nf2 30.Kg1 (30.Kh2 Qf4 31.Kg1 Re2 32.Qc8 Kg7 33.Qc3 Kh6–+) 30...Nh3 (30...Nd1 31.Kh1 Re1 32.Nf1 Rf1 33.Kh2 Qg1 34.Kg3 Rf2 35.Qc8 Kg7 36.Kh4 Rf4 37.Kg3 Rf3 38.Kf3 Qf2 39.Kg4 Ne3 40.Kg5 h6) 31.Kh2 Nf4 32.Kh1 (32.Nf3 Qg7 33.Re1 Re1 34.Ne1 Qd4–+) 32...Qf6 (better 32...Ne2 33.Nf3 Qe4 34.Qe4 de4 35.Rc7 ef3 36.gf3–+) 33.Nf3 Qf5 (better 33...Re2 34.Qc8 Kg7–+) 34.Qf5 gf5 35.Rf1 (35.Ra1 Re7 36.Nd4 Rb7–+) 35...f6 (35...Rb8!? 36.Nd4 Ne6 37.Nf5 Rb5 38.Nh6 Kg7 39.Nf5 Kg6 40.Ne7 Kg5 41.Rf7–+) 36.Rd1 (36.Nd4 Re4 37.Nf5 Rb4–+) 36...Kf7 37.Rd5?? (37.Nh4–+) 37...Re2 (better 37...Nd5 38.Nd4 f4–+) 38.Rd1 (38.Rd1 Ng2 39.Ra1–/+). Markzela – PalashPrabhu, lichess.org, 2020.

7.0-0 c6 8.d4 Qc7 9.c4 Re8 10.Nbd2 e5 11.de5 de5 12.Qb3 e4 13.Nd4 Ne5 14.Nc2 Bf5 15.Be5 (15.h3 Rad8 16.Rad1 c5=) 15...Qe5 16.Rad1 h5 (16...Rad8 17.h3=+) 17.Nd4= Rad8 18.Nf5 gf5 (18...Qf5 19.Qa4=) 19.Nb1 (19.f3 a5+=) 19...Ng4 20.g3 h4 21.Bg4 (21.Rd8 Rd8 22.Rd1 Rd1 23.Qd1 hg3 24.hg3 Qb2=) 21...fg4 22.Rd8 Rd8 23.Rd1 Bf6?? (better 23...Qe7=+) 24.Rd8+/- Bd8 25.Qd1 Bc7 (better 25...Qg5+/-) 26.Qd4?? (better 26.Qg4 Kf8 27.Qc8 Kg7 28.Qb7+-) 26...Qd4=+ 27.ed4 f5 (27...h3 28.Nd2 f5 29.Nb3=+) 28.Nd2 (28.gh4 Bd8=) 28...hg3 29.hg3 Kg7 30.Nf1 (30.Nb3 b6=) 30...Kf6=+ 31.Ne3 b6 (31...Bb6 32.Nc2=+) 32.d5 (better 32.b5 cb5 33.Nd5 Kf7 34.Nc7 bc4 35.Kf1+/-) 32...a5?? (better 32...c5=) 33.dc6+- Ke5 34.Nd5 ab4 35.ab4 (35.Nc7?! ba3 36.Nd5 a2=) 35...Bd6 (35...Bd8 36.c7 Bc7 37.Nc7+-) 36.c7 Bc7 37.Nc7 Kd4 38.c5! bc5 39.bc5 (better 39.Ne6 Kd5 40.Nc5+-) 39...Kc5 40.Ne6 Kd5 41.Ng7 f4?? (41...Ke5+-) 42.Kf1 (better 42.gf4 Kd4 43.Nf5 Kd5 44.Ne3 Kd6 45.Ng4 Ke6+-) 42...fg3 43.fg3 e3 (43...Ke5 44.Kf2+-) 44.Ke2 Kd4 45.Nh5 Ke4 46.Nf4 Kf5 47.Ng2 Ke4 48.Ne3 Kd4 49.Ng2 (49.Ng4!? Ke4+-) 49...Ke4 50.Ne3 Kd4 51.Ng4 Ke4 52.Nf2 Kd4 53.Kf3 Ke5 54.Kg4 Kf6 If Black now would get Kh5 in, he might survive 55.Kh5 Kg7 56.g4 Kh7 57.g5 Kg7 58.g6 Kh8 59.Ng4 Kg8 Plans Kg5 60.Kh6 (60.Kg5 Kf8 61.Kf6 Ke8 62.g7 Kd7 63.Ne5 Kc8 64.g8Q Kc7 65.Qb3 Kc8 66.Qb5 Kc7 67.Qc6 Kb8 68.Nd7 Ka7 69.Qc7 Ka6 70.Qb6) 60...Kh8+- 61.Ne5 (61.Kg5 Kg7 62.Ne3 Kf8 63.Kf6 Ke8 64.g7 Kd8 65.g8Q Kc7 66.Qe6 Kd8 67.Qd6 Kc8 68.Nd5 Kb7 69.Qc7 Ka6 70.Qb6) 61...Kg8 62.g7 (62.Kg5 Kg7 63.Nd7 Kh8 64.Kf6 Kg8 65.g7 Kh7 66.Kf7 Kh6 67.g8Q Kh5 68.Nf6 Kh4 69.Qg4) ½-½. Gehaktbalmetjus (2135) - julioajedrez_2019 (2065), Rated Bullet game, lichess.org, 2020.

7.0-0 e5 8.d4 ed4 9.ed4 (9.Qd4? Ne8 10.Qe4 Bb2-+) 9...Nh5 10.Nbd2 c5 (10...Nf4 11.Re1=) 11.c3 (11.Ra2 Nf4+=) 11...cb4 (11...Nf4 12.Re1=) 12.cb4 b6 (12...Nf4 13.Re1=) 13.Rc1 Bb7 14.Nc4 Ndf6 15.Ng5 Bh6 16.f4?? (better 16.h4=) 16...Nd5?? (better 16...Nf4 17.Rf4 Bg5-+) 17.Bh5+/- gh5 18.Qh5 Bg5 19.fg5 Ba6?? (better 19...Qd7+-) 20.Rf5 (better 20.g6 hg6 21.Qd5 Bc4 22.Rc4+-) 20...Bc4= 21.Rc4 Ne3 22.d5?? (22.Rf3 Nc4 23.Rh3 Re8 24.Qh7 Kf8 25.Qh8 Ke7 26.Qf6 Kd7 27.Qf7 Qe7 28.Qc4 Rac8 29.Qb5 Kd8=) 22...Nf5 (22...Nc4 23.Bf6 Qe8 24.Qh6 Qe1 25.Rf1 Qf1 26.Kf1 Ne3 27.Kg1+-) 23.Rh4?? (better 23.Qh3 Rc8 24.Rf4=) 23...Nh4-+ 24.Qh6 (24.Qh4 Qe7 25.h3 Qe3 26.Kh2 Rae8-+) 24...f6! 25.g3 (25.Bf6 Qc7 Decoy; 25.gf6 Nf3 Combination) 25...Nf3 (25...Qe7 26.Qh4 fg5 27.Qe4 Qe4 28.Bf6 Rac8 29.Bc3 Qe2 30.b5 Rf1) 26.Kg2 Ng5 (26...Qe7 27.Bf6 Qe2 28.Kh3-+) 27.h4 Qc8 (better 27...Qe7 28.hg5 Qe2 29.Kg1-+) 28.hg5 Qc2 29.Kh3 Qb2 (better 29...Qf5 30.g4 Qf3 31.Kh4-+) 30.gf6?? (better 30.g6 Rf7 31.gf7 Kf7 32.Qh7 Ke8 33.Qg8 Ke7 34.Qa8 Qa3 35.Qb7 Kd8 36.Qa8 Ke7 37.Qb7 Kd8 38.Qa8 Ke7=) 30...Qf6 (better 30...Rf6 31.Qg5 Kh8 32.Qe3-+) 31.Qf6 Rf6 32.g4 Raf8 33.g5 (33.Kh4 Rg6 34.Kg3 h5 35.Kh2 hg4 36.a4 g3 37.Kg2 Rg7 38.a5 Rf2 39.Kg1 Re7 40.ab6 Re1) 33...Rf3 34.Kh4 (34.Kh2 Ra3 35.Kg2 Rc8 36.Kf1 Rc2 37.b5 Ra1) 34...R8f4 35.Kh5 Kg7 (35...Rh3) 36.g6 Rh3 (36...h6 37.b5 Rh3) 37.Kg5 Rfh4 38.b5 (38.gh7 Rh5 39.Kg4 Kf6 40.h8Q Rh8 41.b5 R8h4) 38...Rh5 39.Kg4 (39.Kf4 Kg6 40.Ke4 R5h4) 39…hg6 (39...hg6 40.Kf4 Kf6 41.Ke4 R5h4; 39...Kg6 40.Kf4 R5h4) 0-1. Gehaktbalmetjus (2145) - AlekhineDefense (2135), Rated Bullet game, lichess.org, 2019.

7.0-0 e5 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.cd5 cd5 12.Nc3 a6 13.Qb3 b5 (13...Nb6 14.a4 Bg4 15.Bg4 Ng4 16.a5+=) 14.a4 (14.Nd5!? Bb7 15.Nc3+/-) 14...ba4+= 15.Na4 Bb7 16.Nc5 Nc5 17.bc5 (17.dc5 Qc7+/-) 17...Bc6 (17...Qc7 18.Bc3+=) 18.Ra6 Ra6 19.Ba6 Bd7 (19...Qc7 20.Ra1+/-) 20.Be2 (better 20.Bb7 Be6 21.Ra1+-) 20...Ng4? (20...Qc7 21.f3+/-) 21.Bg4?? (better 21.Qd5 Nf6 22.Qd6+-) 21...Bg4+/- 22.h3 Be6 23.Qc2 Qh4 24.Kh2 f5 25.g3 Qh5 26.Qd1 Qh6 27.Qe2 (27.f4!?+=) 27...f4= 28.ef4? (better 28.h4!? g5 29.ef4 gf4 30.Bc3=+) 28...Bh3 29.Kg1 g5 (29...Bf1 30.Nf1 Qh3 31.Qb5=+) 30.fg5 Qg5 (30...Bf1!? 31.Nf1 Qg5-/+) 31.Re1 (31.Rb1 Bf5 32.Qe3 Qh5=) 31...Bg4=+ 32.Qf1?? (32.Qe3 Qh5 33.f4 ef3-/+) 32...Qh5 (better 32...Qd2 33.Bc1 Qd4-+) 33.Ne4?? (better 33.Qg2=+) 33...de4 (better 33...Bf3 34.Qg2 Bg2 35.Kg2 Qf3 36.Kf1 de4 37.Kg1 Qf2 38.Kh1 Rf5 39.g4 Qh4 40.Kg2 Qg4 41.Kh2 Rh5) 34.Re4 Rb8 (34...Bf6 35.Qc4 Rf7 36.c6-+) 35.Bc3? (better 35.Qc4!? Kh8 36.Qc3-/+) 35...Bf3 36.Rh4 Qd5 (better 36...Qg6 37.Rf4 Bd5-+) 37.Qd3=+ h6 38.Rf4 Bd1?? (better 38...Bh1 39.f3 Qa2=+) 39.Qd1+- Qa2 40.Qf3 Rb1 (40...Qc4 41.Re4+-) 41.Kg2 1-0. Gehaktbalmetjus (2100) - morphy_64 (2095), Rated Bullet game, lichess.org, 2019.

7.c4 a6 8.0-0 b5 9.cb5+/– ab5 10.Bb5 Ba6 11.Ba6 Ra6 12.Nc3 c6 13.d4 d5 14.Qe2 Ne4?? 15.Qa6+- e6 16.Qc6 Nb6 17.Ne4 de4 18.Qe4 Nc4 19.Bc3 f5 20.Qd3 Nb6 21.Rfc1 Nd5 22.Bb2 Qa8 23.Ne5 Be5 24.de5 Qb7 25.Bd4 Ne7 26.Rc5 Nc6 27.Rac1 Nd4 28.ed4 h5 29.h3 g5 30.Rc7 Qd5 31.Qc4 Qc4 32.R1c4 g4 33.hg4 hg4 34.R4c6 Re8 35.Rd7 Kh8 36.Rcc7 Kg8 37.Re7 Re7 38.Re7 Kf8 39.Re6 Kf7 40.Rf6 Ke7 41.d5 f4 42.d6 Kd7 43.b5 f3 44.gf3 gf3 45.a4 Kd8 46.a5 Kd7 47.a6 Kc8 48.Rf7 Kb8 49.b6 Ka8 50.Rf8 1–0. Fournier,Frederic (1755) – laemil (1705), Active (½), 2004.

7.d4 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 b6 11.c4 Bb7 12.Nbd2 c5 13.dc5 dc5 14.b5 e5 (14...h6 15.Ne5=) 15.Qc2 (better 15.Ne5!? Ne5 16.Be5+/-) 15...Qc7 16.Rd1 Re8 17.Nf1 Ne4 18.Bd3 f5 19.Be4 Be4 20.Qb2 Bf3 21.gf3 Qb7 22.Kg2 Nf8 23.Qd2 Ne6 24.Qd5 Qd5 25.Rd5 e4 (25...Ng5 26.Nd2=) 26.Bg7 Kg7? (26...ef3 27.Kf3 Kg7 28.h4+=) 27.f4 (better 27.fe4 fe4 28.Rd6+-) 27...Kf6= 28.Nd2 Re7 29.h4 h6 (29...Ra7 30.Kf1=) 30.Kf1 (30.Rd6 Rb7 31.Nb1 Ke7+/-) 30...g5 (30...Nc7 31.Rd8 Re6 32.Rf8 Ke7 33.Rh8=) 31.hg5 (31.Rd6 gf4 32.Rb6 f3+=) 31...hg5= 32.fg5 Ng5 33.Rd6 Re6 34.Re6 Ke6 35.Ke2 Ke5 36.f4 ef3 37.Nf3 Nf3 38.Kf3 Ke6 39.Kf4 Kf6 40.e4 fe4 41.Ke4 Ke6 42.Kf4 Kd6 43.Kf5 Kd7 44.Ke5 Ke7 45.Kd5 Kd7 46.Ke5 Ke7 47.Kd5 Kd7 48.Ke5 ½-½. Gehaktbalmetjus (2095) - religiosa (2190), Rated Bullet game, lichess.org, 2020.

7.d4 e5 8.0-0 ed4 9.Nd4 (9.Qd4? Ne8 10.Qd2 Bb2-+) 9...Re8 10.c3 c6 11.Nd2 Qc7 12.Qc2 d5 13.Bd3 (13.c4 Ne5+=) 13...Nf8 (13...Ne5 14.Be2=) 14.Rae1 Ne6 15.c4 Nd4 16.Bd4 dc4 17.Nc4 Be6 18.Ne5 (18.h3 Rad8+=) 18...Rad8 19.Rd1 Nd5 (19...Ng4 20.Ng4 Bg4 21.Bg7 (21.Ba7? Bd1 22.Rd1 b6-+) 21...Bd1 22.Qc3=) 20.Nf3 Bf6 (20...Bg4 21.Be2= (21.Ba7? Bf3 22.gf3 b6-+)) 21.Bf6 (worse 21.Ba7 b6 22.e4 Nf4-+) 21...Nf6 22.Bc4 Bc4 23.Qc4 Rd1 24.Rd1 Qe7 25.Ng5 Qe6?? (better 25...Nd5 26.Nh3 Qf6=) 26.Ne6+- Re6 (26...fe6 27.Qd4 Kf7 28.Qa7+-) 27.Rd8 Kg7 28.Qh4 (28.Qc5 Ne8 29.Qa7 h6+-) 28...Nd5 (28...a6 29.Qf4 Re4 30.Qd6+-) 29.Rd5! cd5 30.Qd4 f6 31.Qd5 (31.Qa7!? Re7+-) 31...Re7 32.Qd6 Rf7 (32...Kf7 33.Kf1+-) 33.g3 h5 34.Kg2 Kg8 (34...Kh7 35.b5+-) 35.f4 a6 (35...Kg7 36.e4 h4 37.gh4+-) 36.e4 Kg7 (36...h4 37.e5 fe5 38.fe5 h3 39.Kh3+-) 37.e5 fe5 38.fe5 Rf5 39.e6 a5 40.Qd7 (40.e7 b6 41.e8Q Rf7 42.Qd4 Kh6 43.Qf7 ab4 44.Qe3 g5 45.Qb6) 40...Kf6 41.ba5 Rb5 42.Qb5 (42.Qf7 Ke5 43.e7 Kd6 44.e8Q Rb2 45.Kf3 Rf2 46.Kf2 g5 47.Qee6 Kc5 48.Qd5) 42...Ke6 43.Qb7 g5 44.Qh7 h4 45.gh4 gh4 46.Qh4 Kd5 (46...Kd6 47.Qf6 Kd5 48.a6 Ke4 49.a7 Kd3 50.a8Q Kc4 51.Qa4 Kd3 52.Qd6 Ke3 53.Qe8) 47.Qb4 (47.a6 Ke5 48.a7 Kd5 49.a8Q Ke6 50.Qc6 Kf7 51.Qcf6 Ke8 52.Qa4) 47...Kc6 48.a6 Kd5 49.a7 Ke5 50.a8Q Kf5 (50...Ke6 51.Qae4 Kd7 52.Qbe7 Kc8 53.Q4b7) 51.Qd8 Ke5 52.Qbe7 (52.Qdd6 Kf5 53.Qbf4) 52...Kf5 53.Qdf8 (53.Qd5 Kf4 54.Qee4) 53...Kg6 54.Qeg7 Kh5 55.Qfh8 1-0. Gehaktbalmetjus (2125) - julioajedrez_2019 (2080), Rated Bullet game, lichess.org, 2020.

(--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6).

4.e3 Be6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.a3).

4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.a3).

4.e3 e6 5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d3 e8 9.Nbd2 Nc6 10.c4 e5 11.Qb3 Ng4 12.h3 Nh6 13.Rfe1 g5 14.e4 g4 15.ef5 gf3 16.Nf3 Nf5 17.Bf1 Ncd4 18.Nd4 Nd4 19.Bd4 ed4 20.Qc2 c5 21.bc5 dc5 22.a4 b6 23.a5 ba5 24.Re8 Qe8 25.Ra5 Qe5 26.Qe2 Qc7 27.Ra2 Be5 28.g3 Re8?? 29.Qg4?? Kh8+= 30.Ra6 Rg8 31.Qf3 Bg3!–/+ 32.Bg2 Bf4 33.Rc6?? Qd7 34.Rc5= Qd6 35.Rh5 Qf6 36.Qe4 Qg7 37.Rh7. exp2005 – martinchess, kurnik, 2011.

4.Nf3 g6 5.g3 Bg7 6.Bg2 0-0! 7.0-0! Qc8 8.Re1 Bh3 9.Bh1 e5 10.Ng5 Bd7 11.c4 Nc6 12.d3 Ne7 13.e4 c6 14.Nc3 h6 15.Nf3 Bg4 16.Qd2 Nh7 17.h4 f5 18.ef5 gf5 19.Nh2 f4 20.Ng4 Qg4 21.Qe2 Qe2 22.Re2 fg3 23.fg3 Rf7 24.Ne4 Rd8 25.c5 dc5 26.Nc5 b6 27.Ne6 Rd3 28.Ng7 Rg7 29.Be5 Rf7 30.Kh2 Ng6 31.Bc6 Re7 32.Rae1 Nhf8 33.Bb5 Ra3 34.Bc4 Kh7 35.h5 Ne5 36.Re5 Re5 37.Re5 Ra4 38.Re7 Kh8 39.Rf7 Nh7 40.Bd3 Ng5 41.Rf4 Kg7 42.Bg6 a5 43.Rc4 Rb4 44.Rc7 Kf6 45.Rc6 Ke5 46.Be8 a4 47.Rh6 a3 48.Rg6 Nf3 49.Kg2 a2 50.Kf3 a1Q 51.h6 Qc3 52.Kg2 Rb2 53.Kh3 Qd2 54.h7 Qh2 55.Kg4 Rb4 56.Kf3 Qh5 57.g4 Qh3 58.Ke2 Rb2 59.Kd1 Qh1# 0–1. sacaniev – 3minutoschess (1765), kurnik, 2012.

4.e3 Bd1 5.Kd1 Nc6 6.Nf3 g6 (6...e5 7.b5 Na5 8.Be2-+) 7.Be2 (7.Bf6 ef6 8.d4 d5-+) 7...Bg7 8.d4 Qd7 9.c3 (9.Nbd2 e6-+) 9...0-0 10.Nbd2 e5 11.h3 ed4 12.cd4 Rae8 13.Rc1 Ne4 (13...Ne7 14.Bd3-+) 14.Ne4 Re4 15.Bd3 Ree8 16.Kc2 (16.Rc2 Ne7-+) 16...a5 17.b5 Na7 18.a4 c6 19.Ba3 (19.bc6 Qc6 20.Kd2 Qa4-+) 19...cb5 20.ab5 Nb5 21.Bb5 (21.Bb2 a4-+) 21...Qb5 22.Bd6 (22.Kd2 Qd5 23.Rc2 b5-+) 22...Qc6 (22...Rc8 23.Kd2 Qb2 24.Kd3 Rc1 25.Rc1 Qc1 26.Bf8 Qf1 27.Kc3 Bf8 28.Kb2 Qe2 29.Kc3 Bb4 30.Kb3 Qd3 31.Kb2 Qc3 32.Kb1 Ba3 33.e4 Qb2) 23.Bc5 b6 24.Kb1 (24.Kd2 bc5 25.Rc5 Qb6-+) 24...bc5 25.Rc5 Qe4 26.Ka2 Rb8 27.Rhc1 a4 (27...Qb7 28.R5c2 Qb3 29.Ka1 Qa3 30.Ra2 Qc1) 28.Nd2 Qd3 29.Nc4 Qb3 30.Ka1 a3 (30...Rfd8 31.Ra5 Rd4 32.Rf5 Rc4 33.Rf6 Rc1) 31.Nd2 (31.Rf5 a2 32.Nb6 Rb6 33.Rb5 Rb5 34.Rc7 Qb2) 31…Qb2 0-1. Gehaktbalmetjus (2015) - skadar (2085), Rated Bullet game, lichess.org, 2020.

4.e3 Bd1 5.Kd1 d5 6.Nf3 e6 7.Be2 c5 8.c3 cb4 9.cb4 a6 10.Nc3 Nc6 11.d4 Be7 12.Bd3 0-0 13.Ke2 Qc7 14.Rhc1 Qb8 15.Na4 e5! 16.Nb6 (16.de5 Nd7 Decoy; 16.Ne5 Ne5 Combination) 16...Ra7 (better 16...e4 17.Na8 ed3 18.Kd3 Qa8 19.Ke2-+) 17.a4 (17.de5 Ng4 18.Nd7-+) 17...ed4 (better 17...e4 18.Be4 de4 19.Ne5 Nb4 20.Ba3-+) 18.Bd4 (18.Nd4 Ne5 19.Bf5 Qd8-+) 18...Qc7 (better 18...Nd4!? 19.Nd4 Bb4 20.a5-+) 19.a5 (19.Nd5 Nd4 20.Nd4 Qd8 21.Ne7 Qe7-+) 19...Qd6 20.Bc5 Qe6 21.Be7 (21.Nd4 Qg4 22.Kf1 Bc5-+) 21...Qe7 22.Rc5 (22.Rab1 d4-+) 22...d4 (better 22...Nb4 23.Rcc1 Nd3 24.Kd3-+) 23.Nd4 (23.Bf5 de3 24.Rc4 Qe8-+) 23...Nd4 24.Kf1 Nb3 25.Bh7 (25.Nc8 Qd7 26.Bf5-+) 25...Kh7 26.Rh5 Nh5 27.Rd1 Qb4 28.Rd5 g6 (better 28...Nf6 29.Rd1-+) 29.Rh5 gh5 30.Nd5 Nd2 (30...Qc4 31.Ke1 Qd5 32.g4 Rd8 33.f3 Qf3 34.gh5 Rd1) 31.Ke2-+ Qc4 32.Kd2 (32.Ke1 Qd5 33.f3 Nc4 34.Kf2 Qd2 35.Kg3 Rg8 36.Kh4 Qg2 37.Kh5 Qh2) 32...Qd5 33.Ke2 (33.Kc2 Rc8 34.Kb2 Qb5 35.Ka3 Rc4 36.e4 Ra4) 33...Rc8 34.h4 (34.f3 Rc2 35.Ke1 Qa5 36.Kd1 Qd2) 34...Rc2 35.Kf1 (35.Ke1 Qa5 36.Kd1 Qd2) 35...Qd3 (35...Qd1) 36.Kg1 Rc1 (36...Qd2 37.Kh2 Qf2 38.e4 Qg2) 37.Kh2 Qd6 (37...Qe4 38.f4 Rc2 39.Kg3 Qg2) 38.g3 (38.f4 Qe7 39.g3 Rc2 40.Kh3 Qe4 41.g4 Qe3) 38...Rc2 (38...Qd1 39.g4 Qg1 40.Kh3 hg4) 39.Kh3 (39.Kg1 Qd1 40.Kg2 Rc1 41.f3 Qd2 42.Kh3 Rh1) 39...Rf2 40.e4 Rf3 (40...Qe6 41.g4 Qg4) 41.e5 Qe5 42.Kg2 Qg3 43.Kh1 Rf1 0-1. Gehaktbalmetjus (2110) - Encordado (2120), Rated Bullet game, lichess.org, 2019.

4.e3 Bd1 5.Kd1 Nbd7 6.c4 e6 7.d4 c6 8.Nf3 Be7 9.Bd3 0-0 10.Nbd2 b6 11.Kc2 (11.b5 Rc8-+) 11...d5 12.c5 bc5 13.dc5 a5 14.Bc3 (14.Kd1 Qb8 15.Rb1 ab4 16.ab4 e5-+) 14...a4 (better 14...Ng4!? 15.Raf1-+) 15.Raf1 e5! 16.Ne5 (16.Be5 Ne5 Combination; 16.Ne5 Ne5 Combination) 16...Ne5 17.Be5 Qc8 18.Bd4 Bd8 19.h3 Bc7 (19...Qe6 20.Kc1-+) 20.g4 (20.Bf6 gf6 21.Nf3 Re8-+) 20...Qb8 (20...Qe6 21.f4-+) 21.f4 (21.Bf6 gf6 22.Rfg1 Qd8-+) 21...Re8 (21...Nd7 22.Rb1-+) 22.g5 (22.Bf6 gf6 23.Re1 Re7-+) 22...Ne4 (22...Nh5 23.Rhg1-+) 23.Ne4 Re4 (23...de4 24.Bc4-+) 24.Be4 de4 25.h4 (25.Kb1 Qb5 26.Rd1 Rd8-+) 25...Qd8 (25...Qb5 26.Rd1 Qc4 27.Kb1 Qb3 28.Bb2 Qe3 29.Rhf1-+) 26.h5 (26.Re1-+) 26...g6 (better 26...Qd5 27.Kb1 Qb3 28.Bb2 Rd8-+) 27.hg6 fg6 28.Rh6 (28.Rh7 Kh7 29.Rh1 Kg8 30.Rh8 Kf7 31.Rd8 Rd8-+) 28...Qe7 (better 28...Qd5 29.Rh7 Qc4 30.Kd2 Be5 31.fe5 Qf1-+) 29.Rfh1 Qg7?? (better 29...Qf7 30.Rh7 Qh7 31.Rh7 Kh7-+) 30.Bg7+- Kg7 31.Rh7 Kf8 32.Rc7 Rd8 33.Rh8 1-0. Gehaktbalmetjus (2135) - ffrenchy (1780), Rated Bullet game, lichess.org, 2019.

4.f3 Bd7 5.g4 (5.d4!?=) 5...a5 6.ba5 e5 7.g5 (better 7.e4=+) 7...Ng4?? (better 7...Nh5!? 8.h4 Ng3-+ (8...Ra5?! 9.Bh3-/+)) 8.h3?? (8.h4 h6+-) 8...Qg5?? (better 8...Nh6 9.h4 Nf5=+) 9.fg4?? (better 9.hg4!? Ra5 10.e3+-) 9...Qf4 (9...Qh4) 10.Nf3?? (10.Bg2 h5 11.e3 (worse 11.Bb7 Be7 12.h4 Ra7=+) 11...Qg3 12.Kf1 Ra5 13.Nc3+- (13.Bb7 Rb5 14.Qf3 Qf3 15.Bf3 Rb2-/+; 13.gh5?! Be7+/-)) 10…Qg3 0-1. EvgeniyR (1650) - MeikeSchlecker (2330), Monthly HyperBullet Arena, lichess.org, 2018.

4.h3 Bd7 5.Nf3 Bc6 (5...e5 6.e3=) 6.e3 Bf3 (6...e5!?=) 7.Qf3+/- (worse 7.gf3 Nbd7=) 7...Nc6 (7...c6 8.Bf6 ef6 9.d4+/-) 8.d4 (8.Bf6 ef6 9.Bb5 Qd7+/-) 8...g6 (8...d5 9.c4+=) 9.Bd3 Bg7 10.Nd2 a5 (10...d5+/-) 11.c4?? (better 11.b5 Na7 12.Qb7+-) 11...ab4= 12.d5 (better 12.0-0=) 12...Ne5-/+ 13.Be5 de5 14.ab4?? (better 14.e4 ba3 15.0-0-/+) 14...Ra1-+ 15.Ke2 (15.Bb1-+) 15...Rh1 16.Ne4 (16.g4 Rg1 17.d6 c6-+) 16...Ra1 (better 16...Ne4!? 17.Qe4 f5 18.Qh4-+) 17.Nf6 ef6 18.d6 (18.e4 Qa8 19.Bc2 Qa6-+) 18...cd6 (better 18...Ra2 19.Kf1 Qd6 20.Qd5 Qb4 21.Qb5 Qb5 22.cb5-+) 19.Qb7 0-0 20.h4 Qa8 (better 20...f5 21.g3-+) 21.Qa8 Rfa8 22.g4 Rh1 0-1. Gehaktbalmetjus (2040) - skadar (2015), Rated Bullet game, lichess.org, 2020.

4.h3 Bh5 5.Nf3 e5 6.e3 (6.Nc3 Nc6=) 6...a5 (6...e4 7.g4 Ng4 8.hg4 Bg4 9.Be2 ef3 10.Bf3=+) 7.Be2= ab4 8.ab4 Ra1 9.Ba1 Nc6 10.b5 Ne7 11.g4 (11.0-0 c6=) 11...Bg6 12.Nh4 d5 (12...Be4 13.f3 Ng6 14.Ng2=) 13.Ng6 (13.Be5 Be4 14.0-0 Ng6 15.Ng6 Bg6+/-) 13...hg6 (better 13...Ng6 14.h4 Nd7=) 14.Be5+/- Qd7 (14...g5 15.b6! c6 16.Bc7+/-) 15.Bg3 (15.Nc3 Qd8+/-) 15...d4 16.c4 dc3 17.Nc3 Ned5 18.Nd5 (better 18.Qa4!? Nc3 19.dc3+-) 18...Qd5+/- 19.0-0 (better 19.Bf3!? Qb5 20.Bc7+/-) 19...Rh3= 20.Bf3 Qb5 21.Kg2 Rh7 22.Qc2 Be7? (22...Bd6!?+=) 23.Qc7 (23.Rb1 Qc5 24.Qc5 Bc5 25.Bc7 b6+-) 23...Qd7 (better 23...Bd8 24.Qc2 Qg5+-) 24.Qb8 Bd8 25.Bb7?? (25.Rb1 Kf8 (25...Ng4?? 26.Rb7 Qe6 27.Bc7+-) 26.Rb7 Qe8+-) 25...Ng4?? (25...Qg4 26.Bc6 Nd7+-) 26.Qa8+- Ne3 (26...Kf8 27.Bc8 Ne3 28.de3 Qe8+-) 27.de3 Qh3 (27...Ke7 28.Bc6 Qh3 29.Kg1 Qe6+-) 28.Kf3 (better 28.Kg1 Qg4 29.Bc6 Ke7 30.Qa3 Kf6 31.Qd6 Kg5 32.Qd8 f6 33.Qg8+-) 28...Qf1 (28...Qh5 29.Ke4 Qg4 30.Bf4 Qf5 31.Kd4 Qd7 32.Bd5 Rh4+-) 29.Qa4 Kf8 (29...Qb5 30.Qb5 Kf8 31.Qd7 Bc7 32.Bd6 Bd6 33.Qd8) 30.Bd6 Kg8 (30...Be7 31.Qa8) 31.Qe8 1-0. Gehaktbalmetjus (2000) - ertugrull01 (2075), Rated Bullet game, lichess.org, 2019.

4.h3 Bh5 5.Nf3 Bg6 6.e3 h6 7.Bd3 (7.Bf6 gf6 8.d4 e5+=) 7...e6 (7...Bd3!? 8.cd3 e5=) 8.Bg6+/- fg6 9.c4 Kf7 10.d4 d5 (10...Be7 11.0-0+/-) 11.c5 (11.Ne5 Kg8+-) 11...c6 (11...Nbd7 12.Nbd2+/-) 12.Nc3 (12.Ne5!? Kg8 13.Ng6+-) 12...Nbd7+/- 13.Qc2 Be7 14.Nh4 g5 15.Qg6 Kf8 16.Nf3 Qe8 17.Qe8 Ke8 18.g4 (18.Rb1 g4 19.hg4 Ng4+=) 18...Kf7 19.0-0-0 Ne4 (19...Rhf8!?=) 20.Ne4+/- de4 21.Nd2 Bf6 (better 21...Nf6!?+/-) 22.Ne4+- e5? (better 22...Be7+-) 23.de5 (23.Nd6 Kg6 24.Nb7 ed4 25.Bd4 Be5+-) 23...Ne5 24.Nd6 Kg6 (24...Ke7 25.f4 Nf7 26.Nf7 Kf7 27.Rd7 Kg8 28.fg5 Bb2 29.Kb2+-) 25.Be5 (better 25.f4!? Nf3+-) 25...Be5 26.Rhf1 (26.Nb7 Rhf8 27.Rhf1 Rae8+-) 26...b6 27.f4 gf4 28.ef4 Bf6 29.f5 Kg5? (29...Kh7 30.Ne4 Be5 31.Rd7+-) 30.Ne4 (better 30.Nf7!? Kh4 31.Nh8 Rh8+-) 30...Kh4 31.Nf6 gf6 32.Rd3 (32.Rd6 Kg5+-) 32...Rhe8? (32...Rad8 33.Rc3 bc5 34.bc5+/-) 33.Rfd1 (33.Rd6!? Kg5 34.Rg1 bc5 35.bc5 Re4 36.h4 Kh4 37.Rf6 Rc4 38.Kd2 Rd8 39.Ke3 h5+-) 33...Re5 34.cb6 ab6 35.Kc2 Re2 (35...h5 36.gh5 Rf5 37.h6+/-) 36.Kb3 Rh2 37.Rc1 Rh3 38.Rh3 Kh3 39.Rc6 Kg4 40.Rf6 Kg5? (better 40...Rh8+=) 41.Rg6+- (41.Rb6?! h5+/-) 41...Kf5 42.Rh6 (42.Rb6?! Rh8 43.a4 h5+/-) 42...Ke5 (42...Rb8+-) 43.Rb6 Kd5 44.Rb5 Kc6 45.Rc5 Kb6 46.a4 Rg8 47.a5 Kb7 48.Ka4 Rg4 49.Kb5 Rg1 50.Re5 (50.a6 Ka7+-) 50...Rg4 51.Re7 Kc8 52.Kb6 (better 52.a6 Kb8+-) 52...Rg5 (52...Rb4 53.Ka7 Rd4+-) 53.Re6 (better 53.a6!? Rg6 54.Ka7 Kd8+-) 53...Rg4 54.Rc6 Kd8 (54...Kb8 55.b5 Rg8+-) 55.b5 Kd7 56.a6 Rg5 (56...Rg3 57.Kb7 Rb3 58.a7 Rb5 59.Ka6+-) 57.Rc7 (57.Rc7 Kd6 58.a7 Rb5 59.Kb5 Kc7 60.a8Q Kd6 61.Qe4 Kd7 62.Kc5 Kc7 63.Qe7 Kc8 64.Kc6 Kb8 65.Qb7) 1-0. Gehaktbalmetjus (2160) - Encordado (2130), Rated Bullet game, lichess.org, 2020.

4.h3 Bh5 5.Nf3 h6 6.e3 e6 7.Be2 d5 8.d4 Nbd7 9.Nbd2 b6 10.Rc1 (10.c4 a5 11.b5 Bd6+=) 10...Bd6 (10...c5 11.dc5 bc5 12.bc5 Bc5 13.c4=) 11.c4+= c6 (11...a5 12.c5 Be7 13.c6+=) 12.c5 bc5 13.bc5 Bc7 (13...Be7 14.Bd3+=) 14.Bc3 (14.Qa4 Bf3 15.gf3 Rb8+/-) 14...0-0 (14...Ne4 15.Ne4 de4 16.Nd2 Be2 17.Qe2+=) 15.0-0 (15.Ba6 Bf3 16.gf3 Ba5+=) 15...a5 16.Ne1 (16.Qa4 Qc8+=) 16...Be2= 17.Qe2 a4 18.f4 Ba5 19.Ndf3?? (better 19.Ba5 Qa5 20.Nd3+=) 19...Bc3-+ 20.Rc3 Qa5 (better 20...Ne4!? 21.Qc2 Nc3 22.Qc3 Rb8-+) 21.Qc2 Ne4 22.Rd3 Rab8 23.Nd2 Rb7 (23...Nd2 24.Qd2 Qd2 25.Rd2=+) 24.Ne4= de4 25.Rc3 (25.Rd1 Nf6=+) 25...Rfb8 (better 25...Nf6 26.Qc1 Rfb8-/+) 26.Rf2?? (better 26.Rc4 Rb3 27.Qe4=) 26...Rb2! 27.Qb2 (27.Qc1 Rb1-+) 27...Rb2 28.Rb2 Qc3 29.Re2 f6 0-1. Gehaktbalmetjus (2030) - Encordado (2000), Rated Bullet game, lichess.org, 2019.

4.h3 Bh5 5.g4 Bg6 6.Bg2 c6 7.Nf3 e5 8.0-0 (8.Nc3 Be7=) 8...Be7 (8...Nd5 9.d3=+) 9.d3 (9.c4 Nfd7=) 9...h6 (9...Nd5 10.e3=+) 10.Nbd2 Nbd7 11.Nh4 Bh7 12.e4 Ne4 (12...Nb6 13.Nhf3=+) 13.de4 Bh4 14.Nc4 Qc7 (14...0-0 15.Qd6 Be7 16.Qd2=) 15.Nd6 (15.Qd6 0-0-0+/-) 15...Kf8 (15...Ke7 16.Nf5 Bf5 17.gf5=) 16.c4+= b6 (16...Bg6 17.f4 ef4 18.Bc1+=) 17.c5 (17.f4!? ef4 18.e5+/-) 17...bc5+= 18.bc5 (18.f4 ef4 19.e5+=) 18...Nc5 (better 18...Rd8!? 19.Rc1 Bg5+=) 19.Be5+/- Qa5 (19...Rd8 20.Qc2 Qa5 21.Rad1+/-) 20.Nc4 (better 20.Qf3 Bg6 21.Bc3+-) 20...Qb5?? (20...Qd8 21.Qc2 Qd3 22.Qb2+-) 21.Bd6 (better 21.Rb1 Rd8 22.Rb5 Rd1 23.Rc5+- (23.Rd1?! cb5 24.Rd5 Nd3 25.Bd6 Kg8 26.Rb5 Bg6+-)) 21...Kg8+/- 22.Bc5 (22.Qe2!? Ne6 23.Rab1+/-) 22...Qc5= 23.Qe2 Re8 24.Ne3 (24.e5 Bg6=) 24...Be4 (24...Bf6 25.Rac1 Qa3 26.Rc6 Be4 27.Be4 Re4 28.Ra6=+) 25.Be4 (better 25.Nf5!? Bf6 26.Be4 Ba1 27.Ra1+=) 25...Re4=+ 26.Qf3 Bf6?? (26...Re6 27.Rac1 Qa3 28.Rc6 Rc6 29.Qc6-/+) 27.Rad1?? (better 27.Qe4 Ba1 28.Ra1+-) 27...Rd4 28.Rd4 Bd4 (worse 28...Qd4 29.Qc6 g6 30.Rd1+=) 29.Rd1 Be3 30.Rd8? (better 30.Qe3 Qe3 31.fe3=) 30...Kh7-+ 31.Qe4 g6 32.Rh8 Kh8 33.Qe3 Qe3 34.fe3 Kg7 35.h4 (35.e4-+) 35...Kf6 36.Kf2 Ke5 37.Kf3 c5 38.g5 (38.a4 f5 39.gf5 gf5-+) 38...hg5 39.hg5 f5 40.gf6 Kf6 41.Ke4 g5 42.Kd5 g4 43.Kc5 g3 44.e4 g2 45.e5 Ke6 46.Kc6 g1Q 47.Kb7 Qb6 48.Ka8 (48.Kc8 Ke5 49.Kd7 Qb7 50.Kd8 Ke6 51.Ke8 Qe7) 48...a5 (48...Kd5 49.e6 Kc6 50.e7 Qb7) 49.a4 Qb4 (49...Kd7 50.e6 Kc6 51.e7 Qb7) 50.Ka7 Kd7 51.Ka8 (51.Ka6 Kc6 52.e6 Qb6) 51...Kc7 52.e6 Qb7 0-1. Gehaktbalmetjus (2015) - aliojinalekhine (2010), Rated Bullet game, lichess.org, 2020.

4.e3 Bg7 5.Nf3 h6 6.h4 (6.d4 Bf5=) 6...g4 7.Nd4 h5 (7...e5 8.Nb3=+) 8.g3 e5 9.Nb3 0-0 10.Bg2 c6 11.0-0 Nbd7 12.d4 ed4 13.Bd4 (13.Qd4?? Ne8 14.Qf4 Bb2-+; 13.Nd4?! Nb6=) 13...d5 14.N1d2 Nb6 15.Qe2 Be6 16.c4 (16.Nc5 Qe7=) 16...Nc4 (better 16...dc4 17.Na5 c3=) 17.Na5?? (better 17.Nc4 dc4 18.Na5=) 17...Na5-+ 18.ba5 Qa5 19.Nb3 Qd8 20.Nc5 b6 21.Ne6 fe6 22.Qd3 (22.e4 de4 23.Rad1 Qe7-+) 22...Qd6 23.Qg6 e5 24.Bb2 Rae8 25.e4 d4 26.a4 Re6 27.Ba3 (27.a5 c5-+) 27...c5 28.Qg5 Kf7 (28...Qc6 29.a5-+) 29.f4 ef4 (better 29...Kg8!? 30.Bc1 Qe7-+) 30.gf4-/+ Ne4 31.Be4 Re4 (better 31...d3 32.Bd5 Ba1 33.Ra1 Ke8 34.Qh5 Ke7 35.Qg5 Ref6=+) 32.Qh5?? (better 32.Qf5 Qf6 33.Qe4 Qh4 34.Qd5 Kg6 35.f5 Kh7 36.Qd7=+) 32...Kg8-+ 33.Qg4 Ref4 34.Rf4 Qf4 35.Qe6 (35.Qf4 Rf4 36.Re1 Rg4 37.Kf2 Rh4-+) 35...Rf7 (35...Kh8 36.Qe2 d3 37.Qh5 Bh6 38.Bb2 Kh7 39.Qh6 Qh6 40.Bg7 Qg7 41.Kh1 Rg8 42.Rd1 Qg2) 36.Qh6 (36.Ra2 d3 37.Qe1-+) 36…Qh6 (36...Qh6 37.Re1 Qg6 38.Kh2 Rf2 39.Kh3 Qg2; 36...Bh6 37.Kh1 Qf3 38.Kh2 Bf4 39.Kg1 Rg7) 0-1. Gehaktbalmetjus (2045) - Xico_Xico (2085), Rated Bullet game, lichess.org, 2020.

4.Bf6 ef6 5.e3 h5 6.d4 Bg7 7.Bd3 Nd7 8.c4 Nf8 9.Qc2 c6 10.h4 (10.Ne2 Qe7+/-) 10...g4 (10...Qe7 11.Ne2+=) 11.g3 Rh6 (11...a5 12.ba5 Qa5 13.Nc3+=) 12.Ne2+/- Ng6 13.Nf4 (better 13.0-0!?+/-) 13...Nf4= 14.ef4 (14.gf4 Qe7=) 14...Qe7 15.Kd1 Kf8 (better 15...f5!?=+) 16.Re1+= Qc7 17.Nc3 (17.f5 Bd7+=) 17...Bd7 (17...f5 18.Ne2=) 18.Kc1 (18.Bf5 a5 19.Ra2 Qc8 20.Bd7 Qd7+=) 18...a5 19.Kb2 (19.Kd2 Kg8=) 19...ab4 (19...f5!? 20.Bf5 Bf5 21.Qf5 Bd4-/+) 20.ab4= Ra1 21.Ra1 (worse 21.Ka1 f5 22.Ne2 Qb6-/+) 21...Bh8? (21...f5 22.Ra8 Ke7 23.Bf5 Be6 (worse 23...Bd4 24.Qe4 Be6 25.Qd4 Bf5 26.Qg7+-) 24.Be6 fe6=) 22.Ra8+- Kg7 23.Ne4?? (23.Qe2 f5 24.Qe7 Qb6 25.Qd7 d5+-) 23...d5?? (better 23...f5 24.Nd2 Kg6=) 24.cd5+- Qb6?? (24...f5 25.d6 Qb6 26.Qc5 Qc5 27.Nc5 (27.dc5?! fe4 28.Be4 Re6=; 27.bc5?! fe4 28.Be4 Re6+/-) 27...Rd6 28.Rd8 Rd4 29.Kc3+- (29.Rd7?! Kg8 30.Kc2 b6+/-)) 25.Qc3 (better 25.Qc5 Qc5 26.Nc5 cd5 27.Nd7+-) 25...cd5 26.Nc5 (26.Qc5 f5 27.Rh8 Qc5 28.Nc5 Rh8 29.Nd7 Kg6+-) 26...Bc6? (26...Bb5 27.Bb5 Qb5 28.Ne6 Kg6 29.f5 Kh7 30.Ka3+-) 27.Qe1?? (better 27.b5 Bb5 28.Qb4+-) 27...f5?? (27...Bb5 28.Rb8 Bd3 29.Rb7+-) 28.Kc3 (28.Qe5 Rf6 29.Qb8 Qb4 30.Nb3 Qb3 31.Kb3 Kh6 32.Qh8 Kg6 33.Rg8) 28...Rf6?? (28...Qc7 29.Bf5 Qd6 30.Qe5 Qe5 31.fe5 b6+-) 29.Qe7 (29.Qe7 Kh7 30.Rh8 Kh8 31.Qf6 Kg8 32.Nd7 Bd7 33.Qb6+-) 1-0. Gehaktbalmetjus (2125) - mimaximus (2070), Rated Bullet game, lichess.org, 2020.

4.c4 Bg7 5.Nc3 0-0 6.h3 e5 7.d4 ed4 8.Qd4 Nc6 9.Qd1 Bf5 10.e3 Re8 11.Nf3 Qd7 12.Bd3 Ne4 13.0-0 Nc3 14.Bf5 Qf5 15.Bc3 Bc3 16.Rc1 Bg7 17.c5 Rad8 18.cd6 Rd6 19.Rc5 Rd1 20.Rf5 Rf1 21.Kf1 gf5 22.Nh4 Ne7 23.e4 fe4 24.f3 Bf6 0–1. zosiaka – ronela50, kurnik, 2012.

4.c4 Bg7 5.e3 0-0 6.Nf3 b6 (6...Nbd7 7.d4=) 7.Be2 Bb7 8.0-0 c5 9.d4 e6 10.Nc3 cd4 11.Qd4 (11.Nd4 Nc6+=) 11...Nc6 12.Qd3 (12.Qd2 Qe7=) 12...Qe7 13.Rfd1 Rfd8 14.e4 Rd7 15.Rac1 Rad8 16.Qe3 Nb8 17.Rd2 Ng4 18.Qg5 Qg5 19.Ng5 Ne5 (better is 19...Nf6!?=) 20.f4 Nec6 21.Rcd1 h6 22.Nf3 (22.Nh3 Ne7+=) 22...Kf8 (22...Ne7 23.Bd3+=) 23.f5 Ke7 24.fe6 fe6 25.Rc2 (25.Rf1!?+=) 25...Ne5= 26.Nd2 Nbc6 27.Nb3 Rf8 (27...Nf7 28.Rcc1=) 28.Rcc1 Ke8 29.Rd2 h5 30.Rcd1 Ke7 (30...Bh6 31.Rc2=+) 31.b5 Na5 32.Na5 ba5 33.h4 Bh6 (34.Rc2 Be3 35.Kh2 Rf2=+). kamret (2215) – wwwcheck (2080), GameColony.com, 2003.

4.c4 Bg7 5.e3 0-0 6.Nf3 e5 7.d3 Bg4 8.Be2 Nbd7 9.Nbd2 c6 10.0-0 a5 11.h3 Be6 12.Qc2 ab4 13.ab4 Ra1 14.Ra1 d5 15.cd5 cd5? 16.Ne5+/– Ne5 17.Be5 Qd7 18.Nf3 Bh3? 19.gh3 Qh3 20.Bf6 Bf6 21.Rb1 Rc8 22.Qd2 g5 23.Ne1?? Be5= 24.f4 gf4 25.ef4?? Bd4 (25...Bd4 26.Qe3 Be3) 0–1. Fournier,Frederic (1790) – ivancarretero (1660), Active, 2006.

4.d3 Bg7 5.e4 0-0 6.f4 Nc6 7.Nf3 e5 8.fe5 de5 9.Be2 Bg4 10.0-0 Bf3 11.Bf3 Qe7 12.Nd2 a5 13.b5 Nd4 14.Nc4 Nf3 15.Qf3 Qc5 16.Kh1 Qb5 17.Rab1 Qc5 18.Qe2 b5 19.Ne5+= Nh5? 20.Nf3?? Bb2= 21.Rb2 Kg7 22.Rb3 Nf4 23.Qd2 Ne6 24.Rfb1 c6 25.g3 Qh5 26.Kg2 Ng5?? 27.Ng5+- f6 28.Nf3 g5 29.Rf1 g4 30.Ng1 f5 31.ef5 Rf5 32.Rf5 Qf5 33.Qf4 Qd5 34.Kf1?? Rf8–+ 35.Qf8 Kf8 36.Rb1 Kg7 37.Re1 Kf6 38.Re4 Qa2 39.Re2 Qa3 40.Re8 Qc1 41.Kf2 Qc2 42.Ne2 Qd3 43.Re6 Ke6 44.Nf4 Kd6 45.Nd3 c5 46.Ke2 c4 47.Nc1 Kc5 48.Kd2 b4 49.Kc2 a4 50.Kb2 c3 51.Kc2 Kc4 52.Na2 b3 53.Kb1 ba2 54.Ka2–+ Kd3 55.Ka3 c2 56.Ka4 c1Q 57.Kb5 Qd2 58.Kb6 Qh2 59.Kb5 Qg3 60.Kc5 Qe1 61.Kc6 g3 62.Kc5 Qe4 63.Kd6 g2 64.Kc5 g1Q 65.Kb5 Qg5 66.Kb6 Qe6 67.Kb7 Qg7 68.Kb8 Qe8 0–1. Fournier,Frederic – Bekho448 (1615), Active, 2006.

4.e3 a5 5.Nf3 ab4 6.ab4 Ra1 7.Ba1 Bg7 8.Be2 0-0 9.0-0 Nc6 10.d4 (better 10.b5!? Nb8 11.Bb2=) 10...Nb4=+ 11.c3 Nc6 12.Nbd2 Bf5 13.Qb3 b6 14.c4 Ne4 (14...e5 15.d5 Na5 16.Qb5=+) 15.Ne4=+ Be4 16.Nd2 Bf5 17.Bc3 Nb8 18.Bf3 Bc8 (18...e5 19.Ra1=+) 19.d5 (19.Ra1 e5=) 19...Nd7 20.Bg7 Kg7 21.Qc3 f6 22.e4 (22.Nb3 e5=+) 22...Ne5 23.Be2 Bd7 24.h3 (24.f4 Nf7=) 24...Qa8 (24...e6 25.Qg3=+) 25.f4 Nf7 26.Ra1 Qb7 27.Nb3 Ra8 28.Nd4 c5 29.dc6 (29.Ra8 Qa8 30.Nf3 e6=+) 29...Bc6 (29...Ra1 30.Qa1 Bc6 31.Nc6 Qc6 32.Qd4-/+) 30.Ra8 Qa8 31.Ne6 Kh8 32.Bf3 (32.Nc7!? Qa5 33.Nd5-/+) 32...Be4-+ 33.Be4 (33.Nc7 Qc6 34.Be4 Qe4 35.Qc1-+) 33...Qe4 34.Nc7 Qf4 35.Qe1 (35.Nd5 Qe4 36.Qb3 Qd4 37.Kh1 e6-+) 35...Ne5 (35...Qc4?! 36.Qe7 Qd4 37.Kf1 Qa1 38.Kf2 Qb2 39.Kg1-+) 36.Ne6 (36.Nd5 Qc4 37.Nb6 Qc5 38.Qf2-+) 36...Qc4 37.Nf8 Kg7 (37...Qc5 38.Kh2 Qc8 39.Qe3 Qf8 40.Qb6-+) 38.Nh7 (38.Nd7 Nd7 39.Qe7 Qf7 40.Qd6 b5-+) 38...Kh7 39.Qh4 (39.Qe3 b5 40.Kh2 b4-+) 39...Kg7 (39...Qh4 40.g3 Qg3 41.Kf1 Qe3 42.Kg2 Qf3 43.Kg1 Nd3 44.Kh2 Ne1 45.Kg1 Qg2) 40.Qg3 Qc5 41.Kh2 b5 42.Qb3 Nf7 43.Qa2 Qe5 (43...e5 44.g3-+) 44.Kh1 (44.Kg1-+) 44...b4 45.Qb2 Qc5 (45...Qb2 46.Kg1 Qd4 47.Kf1 b3 48.g4 Qd2 49.g5 b2 50.gf6 ef6 51.h4 b1Q) 46.Qb4 Qb4 47.Kh2 Qd4 48.h4 Qe5 (48...Ne5 49.h5 Qh4 50.Kg1 Ng4 51.h6 Kh6 52.g3 Qg3 53.Kf1 Qf2) 49.Kh3 d5 (49...Nh6 50.g4 Ng4 51.h5 Qe3 52.Kg2 Qf2 53.Kh3 Qf3 54.Kh4 g5) 50.g3 g5 (50...Nd6 51.Kg2 Ne4 52.Kf1 Qf5 53.Ke1 Qf2 54.Kd1 Qd2) 51.Kg2 (51.hg5 Ng5 52.Kh4 Qe4 53.Kh5 e5 54.g4 Qh7) 51...gh4 (51...Qe2 52.Kg1 Ne5 53.hg5 Nf3 54.Kh1 Qf1) 52.gh4 (52.Kf2 Qb2 53.Ke3 hg3 54.Kf3 Qf2 55.Kg4 Ne5 56.Kh3 Qh2) 52...Qg5! 53.Kh3 (53.hg5 Ng5 Combination) 53...Qh5 (53...Qg1 54.h5 Ng5 55.Kh4 Qh2 56.Kg4 Qg2 57.Kf5 Qf3) 54.Kg3 (54.Kg2 Qe2 55.Kh1 Ne5 56.h5 Nf3 57.h6 Kg6 58.h7 Qf1) 54...Nh6 (54...Ne5 55.Kf2 Qf3 56.Ke1 Qe3 57.Kd1 Nf3 58.Kc2 Nd4 59.Kd1 Qd3 60.Ke1 Qe2) 55.Kh3 (55.Kf2 d4 56.Kg2 Qe2 57.Kg3 Nf5 58.Kf4 e6 59.h5 Qe3 60.Kg4 Qg3) 55...Qf5 (55...Qf3 56.Kh2 Ng4 57.Kg1 Qf2 58.Kh1 Qf1) 56.Kg3 (56.Kg2 Ng4 57.Kg3 Qf2 58.Kg4 Qg2 59.Kf4 Qh3 60.h5 e5) 56...e5 (56...Qf1 57.Kh2 Qf2 58.Kh3 Nf5 59.Kg4 Ne3 60.Kh5 Qf3) 57.h5 d4 (57...Qf1 58.Kh2 Qf2 59.Kh3 Nf5 60.Kg4 Qf4 61.Kh3 Qg3) 58.Kh4 (58.Kg2 d3 59.Kg1 d2 60.Kg2 d1Q 61.Kg3 Qff3 62.Kh4 Qd4) 58...d3 (58...Qg4) 59.Kg3 d2 60.Kg2 Qg4 (60...d1Q 61.Kg3 Qff3 62.Kh4 Qd4) 61.Kh2 Qf4 (61...Qf4 62.Kg2 d1Q 63.Kh3 Qdf3; 61...Qf3 62.Kg1 d1Q 63.Kh2 Ng4) 0-1. Gehaktbalmetjus (2035) - imnotcarlsen (2050), Rated Bullet game, lichess.org, 2020.

4.e3 Nbd7 5.Nf3 Bg7 6.Be2 0-0 7.0-0 e5 8.d4 a5 9.de5 Ng4 10.h3 Nge5 11.Ne5 Ne5 12.b5 Nf3 13.Bf3 (13.Bf3 Bb2 Discovered attack; 13.gf3 Qg5 Double attack (13...Bb2 Discovered attack)) 13...Bb2 14.Ra2 Bg7 15.c4 Rb8 16.a4 Be6 17.Rc2 Qf6 18.Bd5 Bd7 19.Nd2 c6 20.Bf3 Rfd8 21.Ne4 White plans c5 21...Qe7 (21...Qh4!? 22.Rd2 Be5=) 22.Qd6+/- Qd6 23.Nd6 Be6 24.c5 (24.Rd2+/-) 24...cb5? (24...Bb3!? 25.Rd2 Ba4+=) 25.ab5 (25.Nb7 Bb3 26.Nd8 Rd8+-) 25...b6 26.Bc6 (26.Nb7 Rdc8 27.c6 Rc7+/-) 26...bc5 (26...a4!?+=) 27.Nb7+/- Rd3 28.Nc5 (28.Rc5?! a4 29.Rcc1 a3=) 28...Ra3 29.Ne6 fe6 30.Rb1 a4 (30...Kf8+/-) 31.b6 (31.Bd7 Kf7 32.Rc6 Rd3 33.Be6 Ke7+-) 31...Ra1? (better 31...Rb3!? 32.Rd1 a3=) 32.Ra1+- Ba1 33.b7 (worse 33.Ba4 Rb6 34.f4 e5+/-) 33...a3 34.Ra2 (34.Bd5! Be5 35.Be6 Kf8+-) 34...Bb2+/- 35.Kf1 Kf8 36.e4 Ke7 37.e5! Kd8 (37...Be5 38.Ra3 Deflection) 38.f4 (better 38.Ke2!?+/-) 38...Kc7= 39.Be4 Rb7 (better 39...Rf8 40.g3 g5=) 40.Bb7+/- Kb7 41.Ke2 Kb6 42.Kd3 Kc5 43.Kc2?? (better 43.h4+/-) 43...Kd4-+ 44.Rb2 (better 44.Kd2 Ke4 45.g3-+) 44...ab2 45.g3?? (45.Kb2 Ke4 46.Kc3-+) 45...Ke3 46.Kb2 Ke4 47.Kc2 Kf3 48.Kd3 Kg3 49.Ke4 Kh3 50.f5 gf5 51.Kf4 h5 (better 51...Kh4 52.Kf3 Kg5 53.Kg3 f4 54.Kf3-+) 52.Kg5 h4 0-1. Gehaktbalmetjus (2150) - quetiotu (2155), Rated Bullet game, lichess.org, 2020.

4.Bf6 ef6 5.c4 Bg7 6.Nc3 0-0 7.e3 c6 8.Nge2 d5 (8...Be6!? 9.Nf4 Re8=) 9.cd5+= cd5 10.g3 Nc6 11.d4 Bg4 (11...Be6 12.Bg2+=) 12.Bg2+- Qd7 13.Nd5 Bh3 (13...Rfe8 14.h3 Be6 15.Nef4+-) 14.Bh3+- Qh3 15.Ndf4 Qd7 16.0-0 g5 17.Nd3 h5 (17...Rfd8 18.Nc3+-) 18.Rc1 h4 (18...Rfd8 19.Nc3 g4 20.Nf4+-) 19.Nc5 Qd5 (19...Qe7 20.d5 Rad8 21.Nb7 Qb7 22.dc6 Rd1 23.cb7+-) 20.Nc3 (20.Nb7?! h3 21.f3 Nd4 22.Nd4 Qb7+-) 20...Qd6 21.N3e4 (21.Nb7 Qe7 22.Nc5 hg3 23.hg3 Rfd8+-) 21...Qd5 (21...Qe7 22.d5 Rfd8 23.d6+-) 22.Qh5 (22.Qf3!? Kh8+-) 22...hg3 23.hg3 Ne7 (23...b6 24.Qf3 Ne7 25.Nf6 Bf6 26.Qf6+-) 24.Nc3 Qd6 (24...Qc6 25.b5 Qc8 26.Rfd1+-) 25.Kg2 (25.Nb7!? Qa6 26.Na5 Rac8+-) 25...b6 26.Rh1 Qc6?? (26...Rfd8 27.Qh7 Kf8+-) 27.d5! (27.d5 Rfc8 28.dc6 bc5 29.b5+-) 1–0. FeegLood (2740) – Bikfoot (2185), lichess.org, 2015.

4.Bf6 ef6 5.e4 Be6=.

4.g3 Bg7 5.Nf3 0-0 6.Bg2 e5 7.0-0 Nc6 8.e3 Bg4 9.d3 Qd7 10.h3 (better 10.c4!?=) 10...Bh3-/+ 11.Bh3 Qh3 12.Nbd2 Ng4 13.Qe2? (13.c3 d5-/+) 13...f5 (13...e4 14.Bg7 ef3 15.Nf3 Kg7 16.d4-+) 14.Rfe1? (14.Rab1 b5 15.Rfc1 Rae8-+) 14...Rae8 Black prepares the advance e4 (better 14...e4!? 15.Bg7 ef3 16.Qf3 Kg7 17.Qg2-+) 15.Nf1 (better 15.b5!? Nd8 16.e4-+) 15...e4 16.de4? (16.Ng5 Qh5 17.Bg7 Kg7 18.b5-+) 16...Bb2 17.N3h2 (17.Ra2 fe4 18.Ng5 Qh5 19.Qc4 Kh8 20.Rb2 Rf2-+) 17...Nh2 18.Nh2 Ba1 19.Ra1 Re4 (better 19...fe4 20.Rd1 Ne5-+) 20.Qc4 (20.Qb5 Rb8 21.Nf3-+) 20...Rc4 21.Re1 Rc2 22.Rd1 Ne5 23.a4 (23.Rf1 Nc4 24.Rd1 Ne3 25.fe3 Qg2) 23…Ng4 (23...Ng4 24.Ng4 fg4 25.Rf1 Rff2 26.Rf2 Rc1 27.Rf1 Rf1; 23...Nd3 24.Nf1 Rf2 25.Rd3 Qf1) 0-1. aheadotg (1960) - mbburabak (2230), Hourly Bullet Arena, lichess.org, 2020.

5.c4 0-0 6.d4 e5 7.de5 de5 8.Qd8+= Re8?? 9.Qe8! (9.Qe8 Ne8 10.Nf3+-) 1–0. Fournier,Frederic – Fc energie, Partie ιvaluιe, 1m + 0s, 2008.

5.d4 0-0 6.c4 Bg4 7.Be2 Be2 8.Qe2 Nc6 9.Nf3 e5 10.de5 Ne5 11.Ne5 de5 12.Nd2 Ne4?? 13.Ne4+- f5 14.Nc3 e4 15.0-0 Qf6 16.Rab1 Qb6 17.Nd5 Qd6 18.Bg7 Kg7 19.Qb2 Kg8 20.Rfd1 c6 21.Nf6 Qf6+= 22.Qf6 Rf6 23.Rd7 Rf7 24.Rf7 Kf7 25.Rd1 Ke7 26.c5 Rd8 27.Rd8 Kd8 28.Kf1 Kc7 29.Ke2 b6 30.cb6 Kb6 31.Kd2 Kb5 32.Kc3 c5 33.bc5 Kc5 34.a4 a5 35.h4 h5 36.g3 Kc6?? 37.Kd4?? Kd6= 38.Kc4 Kc6 39.Kd4 Kd6 40.Kc4 Kc6 41.Kd4 ½–½. Fournier,Frederic – Guest4386109, Partie amicale, 1m + 0s, 2008.

5.d4 0-0 6.Nf3 c6 7.Be2 a6 8.0-0 Bg4 9.c4 Nbd7 10.Nbd2 e5 11.h3 Bf3 12.Nf3 Qe7 13.de5 de5 14.Qc2 e4 15.Nd4 Nh5? 16.Bh5+/– gh5?? 17.Qe2 Qg5+= 18.Rab1 Bd4 19.Bd4 f5 20.Rbd1 Rae8 21.c5 Rf7 22.Qc4 f4 23.ef4 Qf4 24.Be3 Qf5 25.Qd4 Ne5 26.Kh2 Nd3 27.g3 Rg7 28.Qc4 Qf7 29.Bf4?? Qc4–+ (29...Qc4 30.Be3 Qc3–+) 0–1. mihai740609 – benekj23 (1645), kurnik, 2011.

5.d4 Bg4 6.Nf3 0-0=.

5.Nf3 Nc6 6.d4 Bg4 7.c4 e5 8.d5 Ne7 9.Be2 0-0 10.Nbd2 Nd7 11.0-0 f5 12.h3 Bf3 13.Bf3 e4 14.Bg7 Kg7 15.Be2 Ng8 16.Qc2 Ndf6 17.Qc3 Qe7 18.Rae1 Rae8 19.f3 ef3 20.Bf3 Kf7 21.e4 fe4 22.Ne4 Qe5 23.Qe5 Re5+= 24.Nf6 Nf6 25.Re5 de5 26.Re1 Re8 27.Be4 Nd7 28.Kf2 Kg7 29.g4 Rf8 30.Kg2 Rf4 31.Bd3 Kf6 32.Re4 g5 33.Kg3 h6 34.c5= Ke7 35.Rf4 ef4=+ 36.Kf3 Ne5 37.Ke4 Nd3 38.Kd3 Kf6 39.Ke4 b6 40.a4 a6?? 41.cb6 cb6=+ 42.h4 gh4 43.Kf4 h3?? 44.Kg3= Ke5 45.Kh3 Kd5 46.Kh4 Kc4?? 47.Kh5+- Kb4 48.Kh6 Ka4 49.g5 b5 50.g6 b4 51.g7 b3 52.g8Q Ka3 53.Qc4 a5 54.Qc1 b2 55.Qb1 Kb3 56.Kg5 a4 57.Kf4 a3 58.Qd3 Ka2 59.Qc4 Ka1 60.Qf1 b1Q–+ (60...b1Q 61.Qc4 Qe1 62.Qd4 Kb1 63.Qb6 Ka2–+) 0–1. Fournier,Frederic (1970) – juanitoo (2070), Echecs21 (2/0), 2003.

5.Nf3 Nbd7 6.d4 0-0 7.c4 c5 8.bc5 dc5 9.d5 Qa5 10.Nbd2 Nb6 11.Qc2 Bg4 12.Be2 Rad8 13.0-0 Na4 14.Be5 Nb6 15.Rfb1 Bf3 16.Nf3 e6 17.d6 Nfd7 18.Rb5 Qa4 19.Qa4 Na4 20.Rb7?? Ne5–+ 21.Ne5 Be5 22.Ra7? Ba1 23.Ra4 Rd6 24.Ra5 Rfd8 25.Bf1 Rd1 26.Rc5 Rc1 27.Rc7 Rdd1 28.g3 Rf1 29.Kg2 Rg1 30.Kf3 Rgd1 31.a4 Rc3 32.a5 Rdc1 33.a6 Rc4 34.Rd7 Rc7 35.Rd8 Kg7 36.Ra8 Rd7 37.a7 Ra7! 38.Ra7 Bf6 39.Kg2 Rc2 40.Kf3 Kh6 41.h4? Kg7 42.Kg2 h5 43.Kf3 Bc3 44.Kg2 Be1 45.Kf3 Bf2 46.Rd7 Be1 47.e4 Rf2 48.Ke3 Rg2 49.Kf4 Rg3 50.e5 Rh3 51.Kg5 Rh4 52.Rf7 Kf7 53.Kh6 Rg4 (53...Rg4 54.Kh7 h4 55.Kh6 h3 56.Kh7 Rh4; 53...Re4 54.Kh7 h4 55.Kh6 Re5 56.Kh7 Rh5) 0–1. Fournier,Frederic (2005) – joselito123 (1685), Active (2/0), 2005.

5.Nf3 e5=.

5.Nf3 e6 6.c4 Nbd7 7.d4 c5 8.Nbd2 0-0= 9.Bd3 b6 10.0-0+= Bb7 11.Re1 d5 12.Rb1 Qe7 13.Bc3 Bc6 14.b5 Bb7= 15.a4 Ne4 16.Bb2 Rac8 17.Ba3?? f5 18.Bc2? Nc3–+ 19.Qc1 Nb1 20.Qb1 Rc7 21.Bd3 Kh8 22.Nb3 Rfc8 23.a5 Qd8 24.g3?? Kg8 25.h4?? h6 26.Nh2? Kf7 27.Nd2? cd4–+ 28.ed4 dc4 29.Qa2 Bd5 30.Bc2 c3 31.Nb3 Bd4 32.Ng4 Nc5 33.Ne3 Nb3 34.Nd5 ed5 35.Bb3 Rc4 36.Qe2 R4c7 37.Qe6?? Kg7–+ 38.Bc2 Bc5 39.Qe5 Kf7 40.Qe6 Kg7?? 41.h5?? Qf6 42.Bc1 Re7 43.Bh6= Kh6 44.Qf6 Re1 45.Kg2 Rg8 46.hg6 Rf8 47.Qc3 Re7? 48.Qd2+/– Kg6 49.Qd5 Kg5 50.Qd2 Kf6 51.Qh6+- Kf7 52.Bb3 Ke8 53.Qg6 Kd8+/– 54.Qc6 Rc7 55.Qd5 Rd7 56.Qc6 Rc7+= 57.Qa8 Ke7= 58.Qd5 Rd7? 59.Qe5+/– Kd8 60.Be6 Rd2 (61.Kh3 Rf2+-). Casanova,G – Burguete,C, Pena San Jose, 1997.

5.Nf3 Bg4 6.Be2 c6 7.0-0 Bf3 8.Bf3 d5 9.d3 e6 10.Nd2 0-0 11.Re1 Nbd7 12.e4 a6 13.ed5 cd5 14.c4 Nb6 15.c5 Nbd7 16.Nb3 Qc7 17.Rc1 Rac8 18.Qc2 Ne5?? 19.Be5+- (19.Be5 Qd7 20.Qc3+-; 19.Re5?! Ng4 20.Ree1 Qh2 21.Kf1 Ne5 22.Be5 Be5+-) 1–0. exp2005 – mathews20, kurnik, 2011.

5.Bf6 ef6 6.d4= 0-0 7.Nf3 Nc6 8.Be2 Re8 9.b5 Nb8 10.0-0 f5 11.a4 Be6 12.c4 Nd7 13.Nbd2 c5 14.bc6 bc6= 15.Rc1 d5 16.cd5 Bd5 17.Nc4 Nb6 18.Nb6 ab6= 19.Nd2 b5?? 20.ab5+/– cb5 21.Bb5 Re7 22.Be2 Qd6 23.Bf3+/– Bf3 24.Nf3 Rae8 25.Qa4 Qe6 26.Rc6 Qe4 27.Rfc1 f4+/– 28.Nd2 Qd3 29.Rd1?? fe3=+ 30.fe3?? Qe3–+ 31.Kh1 Rd7 32.Nf3 Bd4?? 33.Qc4?? Rde7?? 34.Rf1?? Bg7–/+ 35.Rc8 Qe4 36.Re8 Re8 37.Qe4 Re4 38.h3 Re8 39.Ng5 f5 40.g4 Kf8 41.gf5= h6 42.fg6+/– Bf6?? 43.Nf7 (43...Kg7 44.Rg1+=; better is 43.Nh7 Kg7 44.Nf6+-) 1–0. Onkel_Luis – BOURNE, ICC, 2003.

5.Bf6 Bf6 6.c3=+.

6.c4 e5 7.Be2 Na6 8.d3 c5 9.b5 Nc7 10.0-0 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Ne6 14.Nbd2 b6 15.Bc3 Bb7 16.Qa1 Qa8 17.Qa8 Ra8 18.Ra1 Ra1 19.Ba1 Nd8 20.Nb3 e4 21.de4 Ne4 22.Bg7 Kg7 23.Nbd2 Nc3 24.Bf1 Ne6 25.h3 f5 26.Kh2 Bf3 27.Nf3 Ne4 28.Kg1 g5 29.Bd3+/– h6 30.Kf1 Kf6 31.Be4 fe4= 32.Nd2 Nc7 33.Ne4+- Ke5 34.Nd2 d5 35.Ke2 dc4 36.Nc4 Kd5 37.Nb6+- Ke4 38.Nd7 c4? 39.b6 Na6 40.b7 Kd5 41.b8Q Nb8 42.Nb8 Kc5 43.Kd2 Kb4 44.Kc2 Kc5 45.Nd7 Kd5 46.Nf6 Ke5 47.Ng8 h5 48.Nh6 Kd5 49.Nf7 g4 50.hg4 hg4 51.Nh6 1–0. Fournier,Frederic (1620) – draclegend, Active, 2006.

6.d3 Bg4 7.Be2 Nbd7 8.0-0 e5 9.Nbd2 c6 10.c4 a5 11.ba5 Qa5 12.h3 Bf3 13.Nf3 Qc7 14.Qc2 Nc5 15.Nd2 Nfd7 16.Rfe1 f5 17.Bf1 h6 18.d4 Ne6 19.de5 de5 20.Nb3 Ndc5 21.Nc5 Nc5 22.Rad1 Rfd8 23.Rd8 Rd8 24.Rd1 e4 25.Bg7 Kg7 26.Rd4 Ne6 27.Rd2 Nc5 28.Qd1 Rd2 29.Qd2 Qd7 30.Qd7 Nd7 31.f3 ef3 32.gf3 Kf6 33.Kf2 Ke5 34.Bd3 g5 35.Ke2 Nb6 36.Kd2 Na4 37.Kc2 Nc5 38.Be2 Na4 39.Kb3 Nc5 40.Kb4 b6 41.a4 Kd6 42.a5 ba5 43.Ka5 Nb3 44.Kb4 Nc5 45.Kc3 Ke5 46.Bf1 Kd6 47.Be2 Na4 48.Kb4 Nc5 49.Kc3 ½–½. exp2005 – podryw20, kurnik, 2011.

6.d4 c6 7.Be2 Qc7 8.0-0 Nbd7 9.Nbd2 e5 10.de5 de5 11.c4 Re8 12.Qc2 Nf8 13.Rac1 Bf5 14.Qc3 Ne4 15.Ne4 Be4 16.Nd2 Bf5 17.Bd3 Be6 18.e4 Rad8 19.Rcd1 Bc8 20.Nf3 Bg4 21.Be2 Bf3 22.Bf3 Rd4 23.Rd4 ed4 24.Qd2 Ne6 25.Bg4 Qe5 26.Be6?? Qe6–/+ 27.f3 Qc4 28.Rc1 Qb3 29.Bd4?? Rd8–+ 30.Qb2 Bd4 (30...Bd4 31.Qd4 Rd4–+) 0–1. mihai740609 (1650) – brytan73 (1795), kurnik, 2011.

6.d4 Nbd7 7.Be2 c6 8.0-0 d5 9.Nbd2 Ne4 10.c4 Nd2 11.Nd2 dc4 12.Nc4 Nf6 13.Qb3 Be6 14.Rac1?? b5–+ 15.d5? Bd5 16.Rfd1 bc4 17.Bc4 Qc7?? 18.Bd5+/– Ng4 19.h3 Bb2 20.Qb2 Qh2=+ 21.Kf1 cd5 22.hg4 e6 23.Qd4 Qh4 24.g3 Qe7 25.Rc6 Rfc8 26.Rdc1 Rc6 27.Rc6 Qd7 28.Qc5 a5 29.Rc7 Qd8 30.b5 h5?? 31.gh5 gh5 32.a4 h4 33.gh4 Qh4 34.Qe7 Qh3 35.Ke2 Qg4 36.Kd2 Qb4? 37.Qb4+- ab4 38.b6 Kg7 39.b7 Rb8 40.a5 b3 41.Kc3 b2 42.Kb2 Kf8 43.a6 Ke8 44.a7 Rb7 45.Rb7 (45.Rb7 Kf8 46.a8Q Kg7 47.Qe8 Kf6 48.Qf7 Kg5 49.Qg7 Kh5 50.Rb8 d4 51.Rh8) 1–0. mihai740609 – llaakkii, kurnik, 2011.

6.d4 Bg4 7.Be2 Nbd7 8.c4 c6 9.Nbd2 Rc8 10.Rc1 c5 11.dc5 dc5 12.b5 b6 13.0-0 Re8 14.Ne5 Ne5 15.Be5 Be2 16.Qe2 Qd7 17.Rfd1 Qe6 18.Nf3 Ng4 19.Bg7 Kg7 20.h3 Nh6 21.Rd5 Nf5 22.Rcd1 f6 23.Qd3 Qf7 24.Rd7 Ra8? 25.Rd5 Nd6 26.Qc3 Red8 27.Ng5+/– Qg8 28.Nf3 Ne4 29.Qc2+= Rd5 30.Rd5 Nd6 31.Qd3 Qe6 32.Nd2 f5 33.f3 Nf7 34.e4 f4 35.Qc3 Kh6 36.e5 Qf5 37.Ne4 Ng5 38.e6 Qf6?? 39.Qf6 ef6+- 40.Nf6 Ne6+/– 41.Ng4 Kg7 42.Ne5 Nd4 43.Rd7 Kf6 44.Nd3 Re8? 45.Rh7 Ne2 46.Kf2 Ng3? 47.Nf4 Rd8 48.Kg3 g5 49.Nd5 Kg6 50.Ra7 Rb8 51.Ra6 Re8 52.Rb6 Kf5 53.Rf6 Ke5 54.a4 1–0. Fournier,Frederic – Guito, Active (4/0), 2005.

6.Bf6 Bf6 7.d4=.

4.Ra3 e5 5.h4 h6 6.h5 Nh7 7.Rg3 f5 8.Na3 Ndf6 9.Qa1 Ne4 10.Re3 Nhf6 11.f4 ef4 12.Rf3 Ng3 13.Rh3? b6?? 14.Rf4 Nge4 15.Re3? Be7 16.Nf3 0-0 17.Nh4? Nd5–+ 18.Rfe4 fe4 19.Re4 Rf7 20.Ng6 Bf6 21.e3 Bf5 22.Bf6 Qf6 23.Qf6=+ Nf6 24.Rf4 Bg6 25.hg6 Re7 26.g4 Nd5 27.Rd4?? Nf6 28.Kf2 d5 29.Nb5 c6 30.Nd6 Rd8 31.Nf5 Re4 32.Re4 Ne4 33.Ke2 Rf8 34.Ne7 Kh8–/+ 35.Nc6? Rf6 36.Ne5 Ng3 37.Kd3 Nf1 38.a5 ba5 39.ba5 Ng3 40.Kd4 Ne4 41.d3 Nd6 42.Kd5 Nb7 43.a6 Ra6 44.c4 Rd6 45.Ke4 Nc5 46.Kf3 Nd3?? 47.Nd3?? Rd3–+ 48.Ke4 Rc3 49.Kd5 a5 50.e4 Kg8 51.e5 Kf8 52.e6 Ke7 53.c5 a4 54.c6 a3 55.g5 hg5 56.c7 Rc7 (56...Rc7 57.Kd4 a2 58.Ke5 a1Q 59.Ke4 Qc3 60.Kf5 Rc4 61.Kg5 Qe5) 0–1. xtom – sahistulboss (1780), kurnik, 2011.

4.b5 g6 5.g3 Bg7 6.Bg2 0-0 7.Nf3 Rb8 8.0-0 b6 9.Nc3 Nc5 10.d3 Bb7 11.e4 e5 12.Ne2 Qe7 13.d4 (better is 13.Nd2!?+=) 13...ed4+= 14.Ned4 Nfe4 15.Re1 Bd4 (better is 15...Rfe8!?+=) 16.Nd4 f5? (better is 16...Qg5+=) 17.Nc6?? (better is 17.f3+-) 17...Bc6+= 18.bc6 Qe8?? 19.Qd5?? Qf7+= 20.Qf7 Rf7 21.Be4 Ne4 22.a5 b5 23.Re3 a6 24.f3 Nd2–+ 25.Rae1 Nc4 26.Rb3 Kf8 27.Bc1 Na5 28.Ra3?? Nc6–+ 29.Ra6 Nd4 30.Ra2 b4 31.Kf2 c5 32.Be3 b3 33.cb3 Nb3 34.Ra6 Rd7 35.Bf4 d5?? 36.Rb1?? c4?? 37.Bb8+- d4? 38.Bf4 d3 39.Ra4 d2 40.Bd2 Nd2+= 41.Rd1 c3 42.Ra2 Rc7 43.Rc2 Kf7?? 44.Rdd2+- cd2 45.Rc7 Ke6 46.Ke2 d1Q 47.Kd1 1–0. wk1234 – miekli, kurnik, 2011.

4.c4 c5 5.b5 a6 6.Nc3 e6 (6...e5 7.Nf3=+) 7.Nf3 Be7 8.e3 0-0 9.Be2 d5 10.0-0 Nb6 (10...ab5 11.ab5 Ra1 12.Qa1 dc4 13.Bc4=) 11.cd5 ed5 12.d4 c4 13.Ne5 ab5 14.ab5 Ra1 15.Qa1 Be6 16.f4 (better 16.Ba3=) 16...Nbd7?? (better 16...Bf5=+) 17.f5+- Ne5 18.de5 Bf5?? (better 18...Nd7+-) 19.ef6 (worse 19.Rf5 Ne8 20.Qa7 Qd7+-) 19...Bf6 20.Rf5 d4 21.Nd5 (21.Nd5 c3 22.Bc1+-) 1–0. BeepBeepImAJeep – quasartechies (2050), lichess.org, 2016.

4.e3 e5 5.b5 Be7 6.c4 (6.Nf3 c5=+) 6...0-0 7.Ne2 b6 8.Ng3 Bb7 9.Qc1 (9.d4 Re8=+) 9...Ng4 (9...a6!?–/+) 10.Nc3 (10.Be2 f5=) 10…c5 (10...Bh4 11.Qd1 f5 12.a5 Nf2 13.Kf2–/+). RichardSommer (2060) – danielbolanosd (2015), lichess.org, 2020.

4.Ra3 Be7 5.Rg3 Rg8 6.Na3 d5 7.Qa1 g6 8.h4 Ne4–/+ 9.Re3 Bh4 10.g3 Bf6 11.Rh7 Bb2 12.Qb2 Qf6 13.Nf3?? Qb2 (13...Qb2 14.Kd1 Qa1 15.Nb1 Qb1) 0–1. xtom – loque (1680), kurnik, 2011.

4.Ra3 Be7 5.h4 h6 6.h5 Bd7 7.e3 d5 8.Bd3 Bb4 9.f3? Ba3 10.Na3 0-0 11.Qa1 c5 12.g4 Nc6 13.g5 Ne8 14.gh6 f5?? 15.Ne2?? gh6–+ 16.Rg1 Kh7 17.Bg7 Qh4 18.Kd1 Rg8 19.Rg6 Qh5 20.Rh6–/+ Qh6 21.Bh6 Kh6 22.c3 Rg2 23.c4 Rh2?? 24.Kc2 Nb4 25.Kc3 Nd3 26.Kd3 Bc6?? 27.Nf4 Rd8?? 28.Qg1 dc4 29.Kc3 Kh7 30.Qh2 Kg8 31.Qg3 Kf7 32.Qg6 Ke7 33.Qe6 Kf8 34.Qf5 Ke7 35.Qe5 Kf8 36.Ne6 Ke7 1–0. xtom – loque (1690), kurnik, 2011.

4.Ra3 Nc6 5.b5 Ne5 6.f3 e6 7.h4 d5?? 8.g4?? Bg4 9.Be5 Ba3 10.Na3 Qe7 11.Qa1 Bf5 12.Bh3 0-0-0 13.h5 Rhg8 14.h6 Nd7 15.Bg7 f6 16.Bf5 ef5 17.a5 Qb4 18.b6 cb6 19.ab6 Qb6 20.c4 Ne5 21.Qc3 Kb8 22.c5 Qc6 23.Rh4 f4 24.Rf4+- Rde8 25.Rf6 Qa4 26.c6?? d4? 27.c7+- (27.c7 Kc8 28.Qa1+/–) 1–0. xtom – jutroklik6, kurnik, 2011.

4.e3 c6 5.Be2 Nbd7 6.Nf3 e5 7.0-0 Be7 8.c4 h6 9.Nc3 0-0 10.d4 e4 11.Nd2 d5 12.cd5 cd5 13.Qb3 Kh8 14.Nd5+/– Be6 15.Bc4 Nd5 16.Bd5 Bd5 17.Qd5 Nf6 18.Qb7 Rb8 19.Qa7 Bb4 20.Nc4 Qd5 21.Ne5 Bd6 22.Ba3 Ba3 23.Ra3 Ra8 24.Qc5 Qc5 25.dc5 Ra5 26.Rc1 Kg8 27.Nc6 Raa8 28.a5 Nd5 29.f3 ef3 30.gf3 f5 31.Nd4 Rae8 32.Kf2 g5 33.c6 g4 34.Rc5 Ne7 35.fg4 fg4 36.Kg3 Rc8 37.a6 Rf6 38.a7 Rff8 39.Kg4 Kf7 40.c7 Rg8 41.Kf4 Kf6 42.Ra6 Kg7 43.Ke5 Rge8 44.Kd6 Ra8 45.Kd7 Kf7 46.Nb5 Ng8 47.Nd6 (47...Kg7 48.Ne8 Kh8 49.c8Q Rc8 50.Rc8 Kh7 51.Nf6 Nf6 52.Rf6 Kg7 53.Rcf8 h5 54.R8f7 Kg8 55.a8Q) 1–0. market (2260) – larp808 (1965), GameColony.com, 2002.

4.Ra3 Bg7 5.Rc3 0-0 6.h4 Nbd7 7.h5 Nh5 8.Rh5? gh5 9.Rg3 Nf6 10.e3 e5 11.Qh5?? Nh5 12.Be2 Ng3 (12...Ng3 13.fg3 Qg5–+) 0–1. xtom – crazyhorse66 (1705), kurnik, 2011.

4.Ra3 Bg7 5.h4 a5 6.b5 c6 7.Rg3 Nh5 8.Rc3 Bc3 9.Nc3 Bd7 10.e3 Qb6?? 11.Qa1?? Nf6 12.Be2? e5 13.h5 Nh5 14.Bh5 gh5 15.Rh5?? cb5 16.ab5 Bb5 17.Ne4 Nd7 18.Rh6 Qc7?? 19.Nd6+- Ke7?? 20.Be5 Ne5 21.Qe5 Kd7 22.Qb5 Qc6 23.Qf5 Kc7 24.Ne8 Rhe8?? 25.Rc6+- bc6 26.Qf7 Kd8 27.Nf3 Re7 28.Qf8 Re8 29.Qd6 Kc8 30.Nd4 Ra7 31.Nc6 Rc7 32.Na5 Rd8 33.Qa6 Kd7 34.c3 Ke7 35.Nc6 (35.Nc6 Rc6 36.Qc6+-) 1–0. xtom – topless17 (1670), kurnik, 2011.

4.Bc3 Bg7 5.e4 0-0 6.Bd3 Bg4 7.f3 Bd7 8.Ne2 c5 9.bc5 dc5 10.Bc4 Nc6 11.0-0 e5 12.Na3 a6 13.Qe1 Qc7 14.d3 Rfe8 15.a5 Be6 16.Be6 Re6 17.f4 Nd7 18.fe5 Nce5 19.Nf4 Ree8 20.Qg3 Nc6?? 21.Bg7+- (21...Qa5 22.Bb2+-) 1–0. b4_player (2255) – nandin_78 (1805), GameColony.com, 2003.

4.e3 Bg7 5.b5 0-0 6.c4 Nbd7 7.Nf3 Nc5 (7...e5 8.d4=+) 8.Be2 e5 9.d4 ed4 10.Nd4 Nce4 11.0-0 Bd7 12.Bf3 Rb8 13.Nc3 Nc3 14.Bc3 Re8 15.Qb3 (15.a5 Qe7+=) 15...Ne4 (better 15...Ng4=) 16.Bb2 (better 16.Be4 Re4 17.a5+=) 16...Nd2–/+ 17.Qc2 Nf1 18.Rf1 c5 19.bc6 (19.Nb3 Bf5 20.Qe2 Bb2 21.Qb2 Be4 22.Be4 Re4–/+) 19...bc6–+ 20.Bc6?? (20.Ba1!? Qb6–+) 20...Rb2! 21.Qb2 Bc6 22.Qc3? (better 22.Nc6 Bb2 23.Nd8 Rd8 24.Rb1–+) 22...Ba4 (22...Qg5 23.g3 Qc5 24.a5–+) 23.Ra1 Bd7 (23...Bc6 24.Qa3 Qc7 25.Rd1–+) 24.Ra7 Qc8 (24...Qb6 25.Ra1–+) 25.Qb4 (25.Qd3 d5 26.Ne2 Bf5 27.Qd5 Be6–+) 25...Be6 (25...Bd4!? 26.ed4 Bb5 27.f3 Qc4 28.Qc4 Bc4 29.Ra1–+) 26.Ne6 Qe6 27.h3 (27.Ra6 Be5–+) 27...Be5 28.c5 (28.Qa4 Kg7 29.Qb5 Rc8–+) 28...dc5 29.Qc5 Bd6 (better 29...Rc8 30.Qa3 Qb6–+) 30.Qc6 (30.Qd4 Rd8 31.Kf1 Qf5–+) 30...Qe5 (better 30...Bh2! 31.Kh2 Qc6–+) 31.g3 Rf8 32.Kg2 Bb8 33.Ra8 Bd6?? (33...h5 34.Ra4–+) 34.Rf8?? (34.Ra7 Rb8 35.Qf3–+) 34...Bf8 35.Qc2 Qg7 36.Qe2 h5 37.Qf3 h4 38.g4 Qf6?? (38...Qe5 39.Qc6–+) 39.Qe2 (39.Qf6!? Bg7 40.Qd8 Bf8 41.Qh4 Kg7+-) 39...Qf3?? (better 39...Bd6–+) 40.Qf3 f5 (40...Bg7 41.Qe4+-) 41.gf5 (41.gf5 gf5 42.Qh5+-) 1–0. RichardSommer (2110) – deepersystems (2080), lichess.org, 2020.

4.e3 Bg7 5.c4 Nh5 6.Nc3 Nf6 7.Be2 0-0 8.b5 c6 9.Nf3 cb5 10.ab5 Qb6 11.0-0 Qd8 12.h3 Bg4?? (12...Nbd7 13.d4+=) 13.Nd4 (better 13.hg4 Ng4 14.d4+-) 13...Bd7 (13...Be2 14.Qe2 Qc7 15.d3+=) 14.Bf3 e6?? (better 14...Bc8+=) 15.Bb7+- Nc6 (15...e5 16.Nb3 Nc6 17.bc6+-) 16.bc6 Rb8 17.Ra7 Bc6 (17...Bc8 18.Ncb5 Bb7+-) 18.Nc6 Qc7 (18...Qb6 19.Na4 Qa7 20.Na7 Rb7 21.Nb5+-) 19.Nb8 (19.Nb5 Qd7 20.Nb8 Rb8+-) 19...Qb8 (19...Rb8 20.Qb3+-) 20.Qa4 (20.Nb5 Ne8 21.Ba3 h6+-) 20...d5 (20...Nd7 21.Ra1 Nc5 22.Qc6 Nb7 23.Rb7+-) 21.Ba3 Rd8 22.cd5 (better 22.Be7 Nd7+-) 22...Nd5 23.Nd5 ed5 24.Rb1 (better 24.Ra8!? Qa8 25.Ba8 d4+-) 24...Be5 25.Be7 (25.Ra8 Qc7 26.Rc1 Qc1 27.Bc1+-) 25...Rd7 26.Qd7 Bh2 27.Kh1 Bc7 28.Ra8 Kg7 (28...Qa8 29.Ba8 Kg7 30.Qe8 g5 31.Qf8 Kg6 32.Qg8 Kf5 33.Qf7 Ke4 34.Qd5) 29.Rb8 Bb8 (29...Bd8 30.Qd8 Kh6 31.Bg5 Kh5 32.g4) 30.Qe8 Be5 (30...g5 31.Qf8 Kg6 32.Qg8 Kf5 33.Qg5 Ke4 34.Qd5) 31.Qf8 1–0. RichardSommer (1980) – ahmt92 (1940), lichess.org, 2020.

5.e3 0-0 6.h3 a6 7.Nf3 Bd7 8.Be2 ab5 9.ab5 Ra1 10.Ba1 c6 11.Nc3 Qb6 12.Qb1 cb5 13.Bb5 Bb5 14.Qb5 Qa6 15.0-0 Nc6 16.Qa6 ba6=+ 17.d4 Nb4 18.Ne1 Rc8–/+ 19.f3 Nfd5 20.Nd5 Nd5 21.e4 Nf4 22.Rf2 Rc4 23.c3=+ d5 24.Kh2 Ra4 25.Bb2 de4 26.fe4 Ne6 27.Nd3 Nc7 28.Bc1 Nb5=+ 29.Bb2 Rc4 30.Rc2? Nd4! 31.Nf4?? Nc2 0–1. Barrow,Aziz – Lidman,Stefan, Internet Section, 2004.

5.g3 0-0 6.Bg2 c6 7.Nc3 a6 8.bc6 Nc6 9.Bc6 bc6 10.Ba3 Bf5 11.Nf3 (11.Rb1 Nd5 12.Nd5 cd5–+) 11...Qa5 (better is 11...Ne4!? 12.Ne4 Ba1 13.Nd6 ed6 14.Qa1 Bc2–+) 12.Nd4–/+ Bd7 13.0-0 c5 14.Nb3 Qc7 15.e3 Bc6 16.f3 Rad8 17.Nc1 Ba8 18.Nd3 Qc6 19.a5 e5 20.Bb2 e4 21.Nf4 g5 22.fe4? gf4–+ 23.Rf4 Ne4! 24.Ne4 f5?? 25.Bg7+/– Kg7 26.d3?? fe4= 27.Qg4 Kh8 28.de4?? Rf4?? 29.Qf4= Qe4?? 30.Qf6+- Kg8 31.Qg5?? Kh8?? 32.Qf6 Kg8 33.Qg5?? Kf7–+ 34.Rf1 Ke6 35.Rf6–/+ Kd7 36.Rf7? Kc8–+ 37.Kf2 Qg2 38.Ke1 Rd7 39.Qg8= Kc7 40.Rd7 Kd7 41.Qg7?? Kc6–+ 42.Qa7? Kb5 43.Qb6 Kc4?? 44.Qb3# 1–0. wk1234 – amator17, kurnik, 2011.

5.g3 0-0 6.Bg2 Nbd7 7.Nf3 Rb8 8.c4 Ne4 9.Bg7 Kg7 10.Nd4 Nef6 11.Qc2 e5 12.Nf3 Nb6 13.d3 Bf5 14.e4 Be6 15.0-0 Qe7 16.a5 Nbd7 17.Nc3 Ne8 18.h4 f5 19.Ng5 fe4 20.Ne6 Qe6 21.Ne4 Ndf6 22.Ng5 Qe7 23.Bh3 Kh8 24.Ne6 Rf7 25.f4 Ng7 26.Ng7 Rg7 27.fe5 de5 28.Rae1 Rf8 29.d4 e4 30.d5 Nh5 31.Rf8+/– Qf8 32.Rf1 Rf7? 33.Rf7+- Qf7 34.Kg2?? Qe7?? 35.Qe2 Qe5 36.Qe3 Kg7 37.Bg4 Nf6 38.Be6 Qb2 39.Kh3 Qb1 40.g4 Qh1 41.Kg3 1–0. wk1234 – amator17, kurnik, 2011.

5.g3 a6 6.Bg2 ab5 7.ab5 Ra1 8.Ba1 0-0 9.Nc3 b6 10.Qb1 Nbd7 11.Nf3 Nc5 12.Nd4 Bb7 13.Bb7 Nb7 14.Nc6 Qd7 15.0-0 Ra8 16.Qb4 Na5 17.Na5 Ra5 18.Bb2 Qf5 19.Qc4 (better is 19.d3!?=) 19...Qc2–/+ 20.Bc1? (20.Ba1 Ra7 21.d3 Nd7–/+) 20...Ra7?? (better is 20...Ra1 21.Qc7 Rc1 22.Qe7 Qd2–+) 21.Qc6–/+ Bf8 22.Nd5 Qc6 23.Nf6 ef6 24.bc6 Ra1 25.Bb2 Ra2 26.Bf6 Rd2 27.Bd8 Rc2 28.Bc7 Rc6 29.Bb8 b5 30.Rb1 Rb6 31.Bc7 Rb7 32.Ba5 d5 33.e3 b4 34.Kf1 b3 35.Ke2 Rb5 36.Bc3 Bg7 37.Kd3 Bc3 38.Kc3 Kg7 39.Kd4 Kf6 40.f4? Ke6 41.g4–/+ f5 42.g5 Kd6 43.h4? Rb4–/+ 44.Kc3 Kc5 45.Rb2 Re4 46.Kd3 Kb4 47.Re2 Ka3 48.Kc3 d4! 49.Kd3 Re3 50.Re3 de3 51.Ke3 b2 52.Kd4 b1Q 53.Ke5 Qb2 54.Ke6 Qg7 55.Kd6 Kb4 56.Ke6 Kb5 57.Kd5 Qf7 58.Kd6–+ Ka6 59.Ke5 Qe7 60.Kd4 Kb6 61.Kd5 Qc5 62.Ke6 Kc7 63.Kf7 Kd7 64.Kg7 Ke8 65.Kh7 (65.Kh7 Kf7 66.h5 Qc7 67.Kh6 Kg8 68.Kg6 Qf7 69.Kh6 Qh7#). wk1234 – larr, kurnik, 2012.

5.g3 b6 6.Bg2 d5 7.c4 Bb7 8.Bf6 Bf6 9.Nc3 0-0 10.Rc1 e6 11.cd5 Bd5 12.Nd5+/– ed5 13.Qb3 Nd7 14.Bd5 Rb8 15.Nf3 Nc5 16.Qc4 Qe8 17.d4 Ne4 18.0-0 c5 19.e3 Ng5? 20.Ng5 Bg5 21.Rce1 cd4 22.ed4 Qc8 23.Qc8 Rbc8 24.f4 Bf6+= 25.g4 Rc3 26.g5 Bd4 27.Kh1 Kg7 28.Re4 Bc5= 29.Rfe1 Ra3 30.h4 Rh3 31.Kg2 Rh4 32.Kg3 Rh5 33.Rc4 h6 34.gh6 Rh6 35.a5 1–0. wk1234 – ektor, kurnik, 2012.

5.g3 c6 6.Bg2 cb5 7.ab5 Qc7 8.Nf3 Bd7 9.Nc3 a6 10.ba6 Ra6 11.Ra6 ba6 12.Qa1 a5 13.0-0 0-0 14.Qa2 Be6 15.Qa3 Nc6 16.Nb5 Qb6 17.Nfd4 Nd4 18.Nd4 Bd5 19.Bd5 Nd5 20.e3 Nb4 21.c3 Nd3 22.Rb1?? Nb2?? 23.Rb2= Qc7 24.Nb5 Qd8 25.Ra2 Qb6 26.Qa5 Qa5 27.Ra5 Rb8 28.Nd4 Rb2 29.Nf3 e5 30.Ra8 Bf8 31.Kf1 e4 32.Nd4 Rd2= 33.Re8 Kg7 34.Re4+/– f5 35.Re8 Rd1 36.Ke2 Ra1 37.Ne6 Kf7 38.Rf8 Ke6 39.Rh8 Ra2 40.Kf3 h5 41.Rh6 Kf6 42.h3?? Kg7–+ 43.Rh5 gh5 44.g4 fg4 45.hg4 hg4 46.Kg4 Ra4 47.Kf3 Kf6 48.Ke2 Ke5 49.f4 Ke4 50.Kd2 Ra2 51.Ke1 Ke3 52.f5 Ra1# 0–1. wk1234 – martacmarius, kurnik, 2012.

5.g4 0-0 6.h4 (6.h3 e5+=) 6...h5 (better is 6...Bg4!? 7.Bg2 d5–/+) 7.g5 Ne8 8.Bg7 Kg7 9.d4 c5 10.d5 Bf5 11.Bg2 Qa5 12.c3 Bb1 13.Rb1 Qc3 14.Qd2 Qd2 15.Kd2 Nd7 16.Nf3 b6 (16...Nb6!?–/+) 17.e4 a6 18.Rhc1 (18.Bf1!?+=) 18...ab5–/+ 19.ab5 Nc7 20.Ne1 Ra5 21.Nd3 Nb5 22.e5? de5 23.Nb4 cb4 24.Rb4 Ra2 25.Ke3 Nd4 26.Rc7 Nc2 27.Kf3 Nb4 28.Rd7 Rd2 29.Ke3 Rd4 30.Re7 Ra8 31.Re5 Rc4 32.d6 Ra3 33.Ke2 Rc2 34.Kd1 Ra1# 0–1. wk1234 – amator17, kurnik, 2011.

5.g4 Bg4–/+ 6.Bg2 Bc8 7.Nf3 0-0 8.Nc3 Nbd7 9.Qb1 Rb8 10.a5 Nc5 11.Na4 Qe8 (better is 11...Ne6!?–/+) 12.Nc5= dc5 13.d4? (better is 13.Be5=) 13...Qb5–+ 14.dc5 Qc5 15.Bd4 Qc6 16.0-0 Qd6 17.Ba7 Ra8 18.Bd4 Bg4 19.Rd1 Bf3 20.Bf3 Qe6 (20...Qf4 21.Be3 (21.Bb7 Ng4 22.Bc5 Ba1 23.Qa1 Qh2 24.Kf1 c6 25.Bc6 Rac8–+) 21...Qf5 22.c4 Ra5 23.Qf5 Rf5 24.Ra7+=) 21.Bb7 Rab8= 22.a6 Qg4 23.Kf1 Qh3 24.Kg1?? Ng4–+ 25.Bg7 Qh2 26.Kf1 Qf2# 0–1. wk1234 – hanseode, kurnik, 2012.

5.g4 Ng4 6.Bg7 e5 7.Bh3 (7.Bh8?! Nf2 8.Kf2 Qh4 9.Kg2 Qg4 10.Kf2 Qh4 11.Kg2 Qg4 12.Kf2 Qh4=) 7...Nf2 8.Kf2 Qh4 9.Kg2 Bh3 10.Nh3 Qg4 11.Kf2 Qh4 12.Kg1 Qg4 13.Kf2 Qh4 14.Kg2 Qg4 15.Kf2=.

4.a4 b6 5.e3 (5.Nc3 d5=) 5...e5 (5...ab5 6.ab5 Ra1 7.Ba1=) 6.Nf3 (6.Nc3 Be7=) 6...Be7 (6...ab5 7.ab5 Ra1 8.Ba1=) 7.Be2 (7.Nc3 Bb7=) 7...Bb7 8.0-0 0-0 9.c4 (9.Nc3 Nbd7=) 9...Nbd7 (9...ab5 10.ab5 Ra1 11.Ba1=) 10.d4 (10.Nc3=) 10...e4 (10...ed4!? 11.Nd4 ab5 12.cb5 Nc5=) 11.Nfd2+= ab5 (11...Re8 12.Nc3+=) 12.ab5 Ra1 13.Ba1 Re8 (13...d5 14.Nc3+=) 14.Nc3+- Bf8 15.Qc2 Qe7 16.Bb2 Ra8 (16...g6 17.Ra1+-) 17.Ra1 Ra1 18.Ba1 g6 19.Bb2 Bg7 (19...h5 20.Ba3+-) 20.Ba3 (20.Qa4 Qe8+-) 20...h5 (20...Nf8 21.Qa4+-) 21.Bb4 (21.Qa4 Qe8+-) 21...Qe8 (21...Nf8 22.d5+-) 22.d5 (22.Qa4 h4+-) 22...Qe5 (22...Nc5 23.g3+=) 23.Nde4 (23.Qa4 Nc5 24.Qa7 Nfd7+-) 23...Ne4 (23...Ng4 24.g3+-) 24.Ne4+- Qa1 25.Bf1 Qf6 1–0. DEFFM (2255) – rokov (1795), rated rapid game, lichess.org, 2020.

4.a4 Bd7 5.e3 e5 6.Nf3 Be7 7.Be2 0-0 8.0-0 h6 9.c4 c6 10.d4 e4 11.Nfd2 d5 (11...ab5 12.ab5 Ra1 13.Ba1 cb5 14.cb5=) 12.Nc3 (12.bc6 Bc6 13.Nc3 dc4 14.Bc4 Bd6+=) 12...Be6 (12...ab5 13.ab5 Ra1 14.Qa1=) 13.c5 Nbd7 14.b6 Nh7 15.Qc2 f5 16.Bh5 (16.f3 Qe8+=) 16...f4= 17.Ne2 g6? (better 17...fe3 18.fe3 Bg5=) 18.Bg6+- f3 (better 18...fe3 19.fe3 Rf1 20.Rf1 Ndf8 21.Bh7 Kh7 22.Ne4 de4 23.Qe4 Kg8 24.Rf8 Kf8 25.Qe6 Bg5+-) 19.gf3 ef3?? (19...Bh3+-) 20.Bh7 (20.Bh7 Kh8 21.Nf4+-) 1-0. onur604 (2320) - Siwolo (2140), Casual Rapid game, lichess.org, 2021.

4.a4 g6 5.e3 Bg7 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 Bg4 10.Be2 Qc8 11.0-0 e5 (11...cb5 12.cb5 Nbd7 13.h3=) 12.c5 (12.h3 Bf5 13.Nc3+=) 12...d5 (better 12...e4!? 13.Ng5 Be2 14.Qe2 Qf5=) 13.Be5+- Qe6 1–0. DEFFM – GuestVYQC, freechess.org, 2019.

6.Ba1 c5 7.c4 Bd7 8.e3 e6 9.Nc3 Be7 10.Nf3 d5 11.Be2 d4 (better 11...0-0=) 12.e4?? (better 12.ed4 cd4 13.Nd4+/-) 12...dc3-+ 13.dc3? (13.d3 0-0-+) 13...e5 (better 13...Ne4!? 14.0-0-+) 14.Ne5 Be6 (worse 14...Ne4 15.Nf7 Kf7 16.Qd5 Be6 17.Qe4-/+) 15.Nd3 (15.Qd8 Bd8 16.Bd3-+) 15...Ne4 16.Qc2 (16.f3 Nf6-+) 16...Bc4 17.0-0 Bd3 (17...0-0!? 18.Ne5 Be2 19.Qe2-+) 18.Bd3 Nf6 19.Bh7?? (19.c4-+) 19...Rh7 20.c4 Qc7 21.Re1 (21.h3 Nbd7-+) 21...Qh2 22.Kf1 Qh1 (22...Nbd7 23.Bf6 Nf6 24.Qf5-+) 23.Ke2 Qg2 (better 23...Qh4 24.Bf6 Bf6 25.g3-+) 24.Qf5 (24.Bf6 Qg4 25.Kd2 Qf4 26.Kd1 Qf3 27.Kc1-+) 24...Qe4 25.Qe4 Ne4 26.Be5 Nd7 27.Bc7 Bd6 28.f3 (28.b6 Be5 29.f3 Rh2 30.Kd3 Nf2 31.Kc2 Nh3 32.Kd1 f6-+) 28...Bc7 29.fe4 (29.Kd3 f5 30.fe4 Ne5 31.Kc2 f4-+) 29...Bg3 (better 29...Ne5-+) 30.Kd3 (30.Ra1-+) 30...Be1 31.Ke2 Bb4 32.Kf3 b6 33.Kf4 f6 34.e5 Ne5 35.Ke4 Ke7 (35...Bd2 36.Kd5 Ke7 37.Ke4 Rh4 38.Kf5 g6) 36.Kd5 (36.Ke3 Rh2 37.Kf4 g5 38.Kg3 Re2 39.Kh3 f5 40.Kg3 Be1 41.Kh3 g4) 36...Rh5 (36...g6 37.Ke4 Bd2 38.Kd5 g5 39.Ke4 Rh4 40.Kf5 Rf4) 37.Ke4 Nc4 (37...Bd2 38.Kd5 g6 39.Ke4 Rh4 40.Kd5 Rd4) 38.Kd3 Nd2 39.Kc2 Rd5 40.Kc1 (40.Kd1 Nf1 41.Kc2 Ne3 42.Kb2 c4 43.Ka1 Bc3 44.Ka2 Rd1 45.Ka3 Ra1) 40...f5 (40...Nb3 41.Kb1 c4 42.Kc2 Rd2 43.Kb1 Rd1 44.Kb2 Rc1 45.Ka2 Bc3 46.Ka3 Ra1) 41.Kc2 (41.Kd1 Ne4 42.Ke2 Rd2 43.Ke3 g5 44.Kf3 c4 45.Ke3 Bc5 46.Kf3 Rf2) 41...f4 42.Kd1 (42.Kc1 f3 43.Kb2 f2 44.Kc2 f1Q 45.Kb2 Qb1) 42...c4 (42...f3 43.Kc1 f2 44.Kc2 f1Q 45.Kb2 Qb1) 43.Ke2 (43.Kc1 f3 44.Kb2 f2 45.Kc2 f1Q 46.Kb2 Qb1) 43...c3 (43...f3 44.Kf2 Bd6 45.Ke3 Rd3 46.Kf2 Ne4 47.Ke1 Bb4 48.Kf1 Rd1) 44.Kd1 (44.Ke1 c2 45.Kf2 c1Q 46.Kg2 Qf1 47.Kh2 Nf3) 44...Bc5 (44...f3 45.Kc1 f2 46.Kc2 g5 47.Kc1 f1Q 48.Kc2 Qb1) 45.Kc2 Be3 (45...f3 46.Kc3 f2 47.Kc2 f1Q 48.Kb2 Qb1 49.Kc3 Qc1) 46.Kc3 (46.Kc1 Ne4 47.Kc2 Rd2 48.Kb3 Rb2 49.Kc4 c2 50.Kd3 Nf2 51.Ke2 c1Q 52.Kf3 Qh1) 46...Rb5 (46...Ne4 47.Kc2 Rd2 48.Kb3 f3 49.Ka3 f2 50.Kb3 f1Q 51.Kb4 Bc5 52.Kb3 Qb5) 47.Kc2 Rc5 (47...f3 48.Kd3 Rb3 49.Kc2 f2 50.Kd1 f1Q 51.Kc2 Qb1) 48.Kd1 (48.Kd3 b5 49.Ke2 b4 50.Kd3 Rc3 51.Ke2 f3 52.Kd1 b3 53.Ke1 Rc1) 48...Kd6 (48...f3 49.Ke1 Rc1) 49.Ke2 Kd5 (49...Rc3 50.Ke1 f3 51.Kd1 g5 52.Ke1 Rc1) 50.Ke1 (50.Kd3 Nb3 51.Ke2 Nd4 52.Kd3 Rb5 53.Kc3 Rb3) 50...Bd4 (50...f3 51.Kd1 b5 52.Ke1 Rc1) 51.Ke2 Be5 (51...f3 52.Kd2 Ke4 53.Kd1 Be3 54.Ke1 Rc1) 52.Ke1 Ke4 53.Ke2 Rc3 (53...f3 54.Kd2 Bf4 55.Ke1 Be3 56.Kf1 Rc1) 54.Ke1 (54.Kf2 f3 55.Ke1 Rc1 56.Kd2 Bf4) 54...Re3 (54...Ke3 55.Kd1 g5 56.Ke1 Rc1) 55.Kd2 Bc3 (55...f3 56.Kc2 f2 57.Kd2 f1Q 58.Kc2 Qd3 59.Kc1 Re1) 56.Kc2 b5 (56...f3 57.Kb3 f2 58.Kc2 f1Q 59.Kb3 Qb1 60.Ka3 Qb4 61.Ka2 Re2) 57.Kd1 (57.Kc1 Kd3 58.Kb1 Re1 59.Ka2 Kc4 60.Ka3 Ra1) 57...b4 (57...Kd3 58.Kc1 Re1) 58.Kc2 Re2 (58...Bf6 59.Kd1 b3 60.Kc1 Bc3 61.Kd1 Re1) 59.Kd1 (59.Kb3 Kd4 60.Ka4 Kc4 61.Ka5 Re6 62.Ka4 Ra6) 59...Rd2 (59...Kd3 60.Kc1 Re1) 60.Kc1 (60.Ke1 Kf3 61.Kf1 Rd1) 60...f3 (60...b3 61.Kb1 Rd1) 61.Kb1 f2 62.Kc1 f1Q 0-1. Jimito100 (2005) - qwertyasdfgh12345 (2015), Rated Bullet game, lichess.org, 2020.

6.Ba1 c6 7.c4 Qa5 8.Bc3 Qa2 9.e3 g6 (9...e5 10.d4=) 10.Nf3 Bg7 11.Be2 0-0 12.0-0 Be6 13.d3 Nbd7 (13...cb5 14.cb5 Rc8 15.Qd2=) 14.Nbd2 (14.bc6 bc6 15.Nd4 Qa8+=) 14...Nc5 (14...cb5 15.cb5 Rc8 16.Qa1=) 15.Nd4 Bd7 16.Bf3 (16.bc6 bc6 17.Nc2=) 16...e6 (better 16...e5 17.Nc2 Nd3=+) 17.bc6+/- bc6 18.Nc6 Bc6 (18...Nd3!? 19.Bf6 Bf6+/-) 19.Bc6+/- Rb8 (19...Nd3?? 20.Bf6 Bf6 21.Ne4+-) 20.Nf3 (20.d4 Nb3 21.Nb3 Rb3+/-) 20...h6 21.Nd4 Qa7 (21...d5 22.Bb5+/-) 22.Bf3 Qc7 (22...Qd7 23.Qa1 Rb6 24.Nc6+/-) 23.Nb5+- Qe7 24.Qa1 (better 24.Qc2+-) 24...Rd8? (24...d5 25.Rd1+-) 25.Rd1 (better 25.Na7!? Ncd7 26.Nc6+-) 25...Ncd7 26.Bb4 Ne5? (26...Ne8 27.Qa7 Qh4 28.Ba5+- (28.Bd6?! Nd6 29.Nd6 Be5+/-)) 27.Be2?? (27.Qe5 Nd5 28.Bd6 Be5 29.Be7 (29.Be5?! f6 30.Bd6 Rd6 31.Nd6 Qd6 32.cd5 ed5+=) 29...Ne7 30.d4+-) 27...Ne8 (27...Nfg4 28.Bg4 Ng4 29.Qa2+/-) 28.d4 Nc6 29.Qb2 Nb4 30.Qb4 Rb8 31.Qa5 Qb7 32.Bf3 Qb6 33.g3?? (better 33.Qa2+/-) 33...Qa5-+ 34.Nd6 (34.Bc6 Qb4-+) 34...Nd6 35.c5 Nf5 36.Kg2 Ne3! 37.fe3 Rb2 38.Kh3 Bf6 (38...Qc3 39.Be4 Qe3 40.Rb1 Rb1 41.Bc2 Qe2 42.Bd3 Qh5 43.Kg2 Rb2 44.Bc2 Rc2 45.Kf1 Qd1) 39.Rg1 g5 40.Kg4 h5! 41.Kh5 Kg7 (41...Rh2 42.Kg4 Bd4 43.Be4 f5 44.Bf5 ef5 45.Kf5 Qc5 46.Ke4 Qc6 47.Kd4 Rd2 48.Ke5 Qc5 49.Kf6 Rd6 50.Ke7 Qe5) 42.Kg4 Rb8 (42...Bd4 43.Kh3 Qc5 44.Bg4 Qc2 45.Be6 Qe2 46.Bf7 Bf6 47.Rd1 g4) 43.Rg2 (43.h4 Qc3 44.Kh3 Qe3-+) 43...Rh8 (better 43...Bd4 44.h4 f5 45.Kh3 Qe1-+) 44.e4 (44.Re2-+) 44...Qc7 (44...Qe1 45.Be2 Rh4 46.Kf3 Qc3 47.Bd3 Qd3 48.Kf2 Bd4 49.Ke1 Re4 50.Re2 Qe2) 45.e5 Be7 (45...Be5 46.Be4 f5 47.Kf3 Bd4 48.Ke2 fe4 49.Ke1 Qa5 50.Ke2 Qa2 51.Kd1 Qb1 52.Ke2 Rb8 53.h4 Rb2) 46.Be4 (46.h4 Rd8 47.Re2 Rd4 48.Kh3 Qc5 49.hg5 Qc1-+) 46...f5 (better 46...Rd8 47.Rd2 Bc5-+) 47.Bf5 (47.ef6 Bf6 48.Rb2-+) 47...ef5 (47...Qc6 48.Bh7 Qg2 49.h4 Qe2 50.Kh3 g4) 48.Kf5 (48.Kf3 Qb7 49.c6 Qc6 50.d5 Qd5 51.Ke3 Bc5 52.Ke2 Rd8 53.Rg1 Qd3 54.Ke1 Qd1) 48...Qd7 (48...Qc6 49.Rf2 Rf8 50.Kg4 Qe6 51.Rf5 Qf5 52.Kh5 g4) 49.Ke4-+ Qc6 50.Ke3 Qb5 (50...Qg2 51.d5 Bc5 52.Kd3 Qd5 53.Kc3 Ba3 54.Kc2 Rc8 55.Kb1 Rc1) 51.e6 Qa4 (51...Qb3 52.Kd2 Ra8 53.Re2 Ra1 54.Rg2 Ra2 55.Kc1 Qc3 56.Rc2 Qc2) 52.Ke4 Qb3 53.Re2 Qc2 (53...Rh6 54.Rb2 Re6 55.Kf5 Qd5 56.Kg4 Qe4 57.Kh5 Rh6) 54.Ke5 (better 54.Rc2 Rc8 55.c6+-) 54…Qe2 (54...Qe2 55.Kd5 Rd8 56.Kc6 Qa6 57.Kc7 Rc8 58.Kd7 Qb7) 0-1. ClayPigeons (2170) - KT66 (2085), Rated Bullet game, lichess.org, 2020.

6.Ba1 Bd7 7.c4 g6 8.Nc3 Bg7 9.e3 c6 10.Nf3 cb5 11.cb5 0-0 12.Qb1 b6 13.Be2 Bf5 14.0-0?? (better 14.d3=) 14...Bb1-+ 15.Rb1 Nbd7 16.Nd4 Nc5 17.Nc6 Qc7 18.d4 Ne6 19.Bf3 (19.Bb2 Nd8 20.Nb4 d5-+) 19...Nd8 (19...Ng5 20.Be2-+) 20.Rc1 Nc6 (20...e6 21.Bb2-+) 21.Ne2 (21.bc6 Ra8-+) 21...Ra8 (21...d5 22.Rc6 Qb7 23.Bb2-+) 22.Bc6 Ra2 23.Nc3 Qa7 (better 23...Ra5!? 24.Bb2-+) 24.Na2 Qa2 25.Bc3 d5 (25...Nd5 26.Ra1 Qb3 27.Be1-+) 26.Be1 (26.Ra1 Qc4 27.Be1 h6-+) 26...e6 27.Rd1 Ne4 28.g3 (28.Kf1-+) 28...Bf8 29.Kg2 Qc2 (better 29...Bb4! 30.Ra1 Qa1 31.Bb4-+) 30.Ra1 Qe2 31.Ra8 (31.Kg1 Qb2 32.Ra8 Qb1-+) 31...Kg7 (better 31...Qe1 32.Ra2 Qb1-+) 32.Rb8 (32.Ra1-+) 32...Qe1 33.Rb6 (33.Re8 Qf2 34.Kh3 h5 35.Rf8 Ng5 36.Kh4 Qh2 37.Kg5 Qg3) 33...Qf2 34.Kh3 g5 (34...Qf1 35.Kh4 Be7 36.Kg4 h5) 35.Rb8 (35.Ra6 Qf1 36.Kg4 f5 37.Kh5 Qh3) 35...Qf5 (35...Qf3 36.Rf8 Nf2) 36.Kg2 Bb4 (36...Nd2 37.h3 Qf1 38.Kh2 Nf3) 37.b6 (37.Bb7 Qf2 38.Kh3 Qf1 39.Kg4 f5 40.Kh5 Qh3) 37...Be1 (37...Qf2 38.Kh3 Qf1 39.Kg4 f5 40.Kh5 Qh3) 38.Bd5 (38.Rg8 Kg8 39.Be8 Qf2 40.Kh3 Qf1 41.Kg4 f5 42.Kh5 Qh3) 38...Qf2 39.Kh3 h5 (39...Qf1 40.Kg4 f5 41.Kh5 Qh3) 40.Be4 (40.Rg8 Kg8 41.Be4 Qf1 42.Bg2 Qf5 43.g4 Qg4) 40...g4 (40...Qf1 41.Bg2 Qf5 42.g4 Qg4) 41.Kh4 Qh2 42.Kg5 f6 43.Kf4 Qf2 (43...Bg3) 44.Bf3 Qf3 0-1. Jimito100 (2035) - imnotcarlsen (2030), Rated Bullet game, lichess.org, 2020.

6.Ba1 Bd7 7.c4 g6 8.e3= c5 (8...Bg7 9.d4=) 9.Nf3 (9.Bf6 ef6 10.Nc3 Be6+=) 9...Bg7= 10.Be2 0-0 11.0-0 Bf5 12.d4 Ne4 (12...Nbd7 13.Nh4=) 13.Nbd2 Nd7? (better 13...Nf6!?+=) 14.Ne4 (14.g4 Nf2 15.Rf2 Bg4+-) 14...Be4+- 15.Bb2 (15.Nd2 d5+-) 15...Qa5 (15...cd4 16.Bd4 e5 17.Bc3=) 16.Qb3 (16.Ng5 Qb4 17.Ba1 Bf5+-) 16...cd4 (16...Ra8 17.Rd1=) 17.Bd4 (17.ed4 Qc7+=) 17...Nc5 18.Qb2 e5 19.Bc5 dc5 20.Nd2 (worse 20.Ne5 Rd8 21.Ra1 Qb4 22.Qb4 cb4–/+) 20...Bf5 21.e4 Be6 22.Ra1 Qd8 23.Nb1 f5 24.Nc3 fe4 25.Ne4 Qd4 26.Qd4 ed4 27.Ra7 Rd8? (27...b6 28.Rb7 Re8 29.f3+=) 28.Bd3 (28.Nc5!? Bc8 29.Bd3+- (29.Nb7?! Bb7 30.Rb7 d3+-)) 28...Bf5 (28...b6 29.Rb7 Bf5 30.Kf1+= (worse 30.Rb6 Be4 31.Be4 d3–/+)) 29.Kf1 (29.Nc5 Bf8 30.Ne4 Be4 31.Be4 d3+=) 29...Be4 (29...b6!?=) 30.Be4+- d3 31.Ke1 (31.Rb7 d2 32.Bc2 d1Q 33.Bd1 Rd1 34.Ke2 Rc1=+) 31...Bc3 32.Kd1 d2 (32...b6!?+-) 33.Rb7 Kf8 (33...Re8 34.f3 Ra8 35.Bd5 Kf8 36.Rf7 Ke8 37.Ba8 Kf7+-) 34.Rh7 Rd4 35.Bd5 Rf4 36.f3 g5 (36...Rf5 37.b6 Re5 38.Be4+-) 37.b6 (37.b6 Rh4 38.b7+-) 1–0. BeepBeepImAJeep (2560) – Maci (2200), lichess.org, 2015.

6.Ba1 Nbd7 7.c4 c6 8.Nc3= cb5 (8...e5 9.Nf3=) 9.Nb5 Nc5 (9...e5 10.Na7=) 10.e3 g6 (10...e5 11.Be2=) 11.d4 (11.Bf6 ef6 12.Nf3 Bf5+=) 11...Na6 (11...Nce4 12.Qa4 Bd7 13.f3+=) 12.Nf3+= Bg7 13.Be2 Nc7 14.Nc3 0-0 15.0-0 Ne6 (15...Qd7 16.Qb3+=) 16.Qb3+/- b6 17.Rb1 Nd7 18.Bb2 Bb7 19.Ba3 Qc7 20.Na4 (20.Nd5!? Qd8 21.Nb6+/-) 20...Rb8 21.Nc3 Bc6 (21...Rf8!?=) 22.Nd2 Ba8 (22...Qd8 23.Qb4 Bb7 24.Bb2+=) 23.f3 Nd8 (23...Bc6 24.Bb2+/-) 24.Nde4 Nc6 25.Nd5 Qd8 26.Qb5 e6 27.Ndc3 d5? (better 27...f5 28.Bd6 fe4 29.Bb8 Ncb8+=) 28.Nd6?? (better 28.cd5 Na7 29.Qb3+-) 28...Nd4!-/+ 29.ed4 Bd4 30.Kh1 Bc3 31.cd5 Bd5 32.Qd3 (32.Ne4 Bg7-+) 32...Bg7 33.Bb2?? (33.Ne4-+) 33...Nc5 34.Qc2 (34.Qe3 Qd6 35.Bg7 Kg7-+) 34...Qd6 35.Bg7 Kg7 36.Rd1 (36.Qd2 Qe5-+) 36...Qe5 37.Bb5 (37.Rb1 Ra8 38.Bf1 Ra2-+) 37...Rd8 (better 37...Bb3 38.f4 Bc2 39.fe5 Bd1-+) 38.h4 (38.Qf2 Ra8-+) 38...Qf6 (better 38...Bb3 39.Rd8 Qe1 40.Kh2 Qh4 41.Kg1 Bc2 42.Ra8-+) 39.Rf1 (39.Qf2 Ne4! 40.Qb6 Nc3-+) 39...Qh4 40.Kg1 Qf6 41.Qe2 Qd4 42.Kh1 Qf6 43.Kg1 Nd7 (43...Nb3 44.Qe3-+) 44.g3 (44.Qf2 e5-+) 44...Ne5 45.Kg2 (45.f4 Nc4! 46.Rc1 Qd4 47.Qf2 Qe4-+) 45...Nf3 (better 45...Ra8 46.Ba6-+) 46.Rf3 Qf3 (better 46...g5!? 47.Kf2 Bf3 48.Qf3 Rd2 49.Be2 Re2 50.Ke2 Qf3 51.Kf3-+) 47.Qf3 Bf3 48.Kf3 Rd5 49.Kg4 (49.Bc6 Rc5 50.Be4 b5-+) 49...Rc5 (49...Rb5 50.Kf4 g5 51.Ke4 f5 52.Kd4-+) 50.Kh3 (50.Ba6-+) 50...Rb5 51.g4 Rd5 52.Kh4 b5 (52...b5 53.Kg3 b4 54.Kf2 b3 55.Kf3 b2 56.Ke4 b1Q 57.Kf3 Qf1 58.Kg3 Rd3 59.Kh4 Qf6 60.g5 Qd4) 0-1. ClayPigeons (2185) - JongUn_Kim (2300), Rated Bullet game, lichess.org, 2019.

6.Ba1 g6 7.c4 Bg7 8.Nc3 0-0 9.e3 c6 10.Nf3 cb5 11.cb5 Nbd7 12.Be2 Nc5 13.0-0 Bg4 14.Qb1 Bf5 15.Qc1 Nd3 16.Qa3 Qb6 (16...Ne5!?=) 17.Nd4 Nc5 18.Nf5 gf5 19.Qb2 Nfe4 20.Bf3 (better 20.d4!? Nc3 21.Qc3+=) 20...Nc3= 21.dc3 Nd3 (better 21...Ra8!?=+) 22.Qb1+= Ne5 23.Be2 Kh8 (23...e6 24.c4+=) 24.c4 (24.Qf5 e6 25.Qh5 Ra8+-) 24...Rg8 (24...e6 25.Bd4 Qc7 26.Qb2+/-) 25.Rc1 (25.Be5 Be5 26.Qf5 Kg7+-) 25...d5 (better 25...e6!?+/-) 26.Bd4 Qg6 27.c5 (better 27.cd5 Nc4 28.Qd3+-) 27...Bh6?? (better 27...Ng4 28.Qa1 Bd4 29.Qd4 Nf6+/-) 28.Be5+- f6 29.Bg3 f4 (29...e5 30.c6 bc6 A) worse 31.Rc6 f4 32.Qg6 hg6+- (32...Rg6?? 33.b6+-); B) 31.bc6+-) 30.ef4 (30.Qg6 hg6 31.Bf4 Bf4 32.ef4 Rc8+-) 30...Qg7 (30...e5 31.f5 Qf7 32.Rd1+-) 31.c6 (better 31.Qf5 e5 32.Bf3 Qg6+-) 31...Bf4 32.c7 (better 32.Rc5 Bg3 33.hg3+-) 32...Bc7 (32...Bc1 33.Qf5 Bb2 34.c8Q Rc8 35.Qc8 Qg8 36.Qb7+-) 33.Bf3 (33.Rc7 b6+-) 33...h5 (33...Bg3 34.hg3 e6+-) 34.Bc7 (better 34.Rc7 h4 35.Bh4 d4+-) 34...h4 (34...e6 35.Bd6 Qh7 36.Qa1+-) 35.g3 (35.g3 hg3 36.fg3+-) 1-0. Jimito100 (2035) - imnotcarlsen (2030), Rated Bullet game, lichess.org, 2020.

4.a4 Bb7 5.e3 a6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 (9.bc6!? Nc6 10.Bf6 gf6 11.Bb5+=) 9...cb5 10.cb5 Nbd7 11.Be2 e5 12.0-0 Be7 13.d4 0-0 (better 13...e4!? 14.Nfd2 0-0=) 14.de5+/- Ne5 15.Ne5 de5 16.Be5 (16.Qd8 Rd8 17.Be5 Nd7+/-) 16...Qa8 17.f3 (17.Bf3 Bf3 18.Qf3 Qf3 19.gf3 Nd7+/-) 17...Rd8 (17...Bc5 18.Bd4+=) 18.Qb3 Bd5 19.Bc4 (19.Qc2 Bc5 20.Qc3 Re8+/-) 19...Bc4 20.Qc4 Bc5 (20...Qd5 21.Qd5 Rd5 22.Bd4 Rb5 23.Nc3+=) 21.Bf6+/- Be3 22.Kh1 gf6 23.Qg4 (23.Nc3 Bd4+/-) 23...Kh8+= 24.Qh4 (24.Nc3 Qa3 25.Qc4 Qc5 26.Qc5 Bc5+=) 24...Bg5 (24...Bd4 25.Rd1 Bb2 26.Qe1=) 25.Qc4 Qd5 26.Qd5 (26.Na3!?+=) 26...Rd5=+ 27.Nc3 Rc5 28.Ne4 Rb5 29.Ng5 (better 29.g3!?=+) 29...fg5-+ 30.Rd1 (30.h3 Kg7-+) 30...Kg7 31.h3 Rb2 32.Kh2 h5 33.Rd6 f6 34.Rd7 (34.h4 b5-+) 34...Kg6 35.Rb7 (35.h4 b5-+) 35...h4 36.Kg1 b5 37.Rb6 Kf5 38.Kf1 Ke5 39.Kg1 Kf4 40.Rf6 Kg3 (40...Kg3 41.Kf1 Rf2 42.Ke1 Rg2-+) 0-1. Choco2K - MeikeSchlecker (2250), Rated Bullet game, lichess.org, 2014.

4.a4 Bb7 5.e3 Nbd7 6.c4 e5 7.Nf3 Be7 8.Be2 0-0 9.0-0 a6 10.Qc2 ab5 11.cb5 Nc5 12.Nc3 h6 13.d4 ed4 14.Nd4 Nfe4 (14...Re8!?=) 15.Bf3+/- Nc3 16.Qc3 (better 16.Bb7 Nb7 17.Bc3+=) 16...Bf3=+ (16...Ra4? 17.Bb7 Ra1 18.Ba1 (18.Ra1?! Nb7 19.Nc6 Bf6+/-) 18...Nb7 19.Nc6+-) 17.Nf3 Ne4?? (better 17...Bf6 18.Qc2 Bb2 19.Qb2 Na4=+) 18.Qg7 1-0. Jimito100 (2035) - Putatalho (2050), Rated Bullet game, lichess.org, 2020.

4.a4 Bb7 5.e3 Nbd7 6.Nf3 e5 7.c4 Be7 8.Be2 0-0 9.Nc3 Ng4 10.h3 Nh6 11.0-0 f5 12.Rc1 (12.d4 a6+=) 12...Nc5 (12...c5 13.d4=) 13.d4+= ed4 14.Nd4 (worse 14.Qd4 Nb3 15.Qd3 Nc1 16.Rc1 Bf6-/+; 14.ed4?! Ne4+=) 14...Ne4? (better 14...a6+=) 15.Ne6+- Qe8 16.Nf8 Qf8 17.Bf3 (17.Nd5 Bd8+-) 17...Nc3 (17...Bf6+-) 18.Bc3 Bf3 19.Qf3 (worse 19.gf3 Kh8+-) 19...Re8 20.Qb7 f4 (20...Bd8 21.Qa7 Re4 22.Bd4+-) 21.Qc7 f3 22.gf3 (better 22.Qa7!? fg2 23.Kg2 Bd8+-) 22...Qf3 23.Kh2 (23.Qd7 Kf8+-) 23...Nf5 24.Rg1?? (24.Qd7 Rf8 25.Qe6 (25.Qa7?! Nh4 26.Rg1 Qf2 27.Kh1 Qf3 28.Kh2 Qe2 29.Kh1 Qf3 30.Kh2 Qe2 31.Kh1 Qf3=) 25...Rf7 26.Qd5+-) 24...Qf2+/- 25.Rg2 Qe3 26.Rcc2?? (26.Rf1!? Qc3 27.Rf5+/-) 26...g6?? (better 26...Bg5!? 27.Rcf2 Bf4 28.Kg1 Bg3-/+) 27.Qd7 (27.Qc6!? Kf8 28.Bd2 Qe5 29.Kh1 Qa1 30.Rc1+=) 27...Bg5 28.Rce2?? (better 28.Rcf2 Bf4 29.Kh1=) 28...Bf4 29.Kh1 Qh3 (better 29...Qc1 30.Be1 Ng3 31.Kh2 Ne2 32.Bg3 Qe3 33.Qe8 Qe8 34.Bf4 Nf4-+) 30.Kg1 Re2 31.Re2?? (31.Qd8 Kf7 32.Qf6 Ke8 33.Re2 Be3 34.Re3 Qe3 35.Kf1 Qd3 36.Kg1-+) 31...Be3 32.Re3 Qe3 33.Kg2 Qc3 34.Qe6 (34.Qa7 Ne3 35.Kf2 Qd2 36.Kf3 Nc4 37.Qb8 Kf7 38.Qc7 Ke6 39.Qh7 Ne5 40.Kg3 Qe3 41.Kg2 Qe2 42.Kh1 Qf1 43.Kh2 Kf5 44.Qd7 Nd7 45.Kg3 g5 46.Kh2 g4 47.a5 Kf4 48.a6 g3) 34...Kg7 35.Qd7 Kh6 36.Qe6 (36.Qc6 Qd2 37.Kg1 Qe1 38.Kg2 d5 39.cd5 Qe2 40.Kg1 Nd4-+) 36...Qd2 37.Kf3 (37.Kg1 Qe3 38.Qe3 Ne3-+) 37...Qd1 (37...Nd4 38.Kg3 Ne6 39.c5 Qe3 40.Kg2 Nf4 41.Kf1 Qf3 42.Ke1 Qe2) 38.Kf2 Qd2 39.Kf1?? (39.Kf3 Nd4 40.Ke4 Ne6 41.Kf3 Kg5 42.Kg3 Nf4 43.Kf3 Qe2 44.Kg3 Qg2) 39…Ne3-+ (39...Ne3 40.Qe3 Qe3 41.a5 ba5 42.b6 ab6 43.Kg2 a4 44.Kh1 a3 45.Kg2 a2 46.c5 a1Q 47.cb6 Qag1) 0-1. brucepeng (1995) - Raudelgr (2100), lichess.org, 2020.

4.a4 Bd7 5.e3 g6 6.c4 Bg7 7.Nf3 0-0 8.Nc3 h6 9.Be2 c6 10.0-0 e5 11.Re1 Qe7 12.d3 Bg4 13.h3 Bf5 14.e4 Be6 15.Bf1 c5 16.Nd5 Nd5 17.ed5 Bf5 18.a5 Nd7? (18...Qd8 19.a6+=) 19.a6 (19.g4 Bg4 20.hg4 a6+-) 19...Qf6? (19...g5 20.d4+=) 20.Rc1?? (20.g4 Be6+-) 20...Qd8? (20...h5 21.Nd2+=) 21.Be2?? (better 21.g4+-) 21...e4 22.Bg7 ef3 23.Bf8 (23.Bh6 fe2 24.Re2 Ne5 25.Bf8 Kf8+/-) 23...fe2+= 24.Qe2 Qf8? (24...Nf8 25.Qe3+=) 25.Qe3?? (25.g4!? Bg4 26.Qg4 Ne5+-) 25...Kg7? (25...Ne5 26.g4 Bd3 27.f4 Bc4 28.fe5 Bb5 29.e6=) 26.Rcd1 (26.g4!? Bg4 27.hg4+-) 26...Ne5 (26...Nf6 27.Qf3=) 27.d4 (27.f4!? Nd3 28.Rd3 Bd3 29.Qd3+/-) 27...cd4+= (worse 27...Nc4 28.Qc3 Na5 29.dc5 Kg8 30.g4+/-) 28.Qd4 Kh7 29.Qf4 (29.f4!? Nd7 30.g4=) 29...Re8 (29...Rc8!?-/+) 30.Re3=+ f6 (30...Rc8 31.Rd4=+) 31.Rde1 (better 31.Qd4=) 31...Nd3?? (better 31...Rc8=+) 32.Qd6 (better 32.Qf5! Ne5 33.Qb1+-) 32...Ne1 (better 32...Qd6 33.Re8 Ne1 34.Re1 Qb4-+) 33.Qf8= Rf8 34.Re1 Kg7 (better 34...Kg8 35.d6 Kg7=+) 35.g4 (better 35.c5!? Kf7 36.c6+=) 35...Bd3-/+ 36.Rc1 Rc8 37.Rc3 Be2 38.Kg2?? (38.Rc2 Bc4 39.d6 Be6-+) 38...Rc4 (better 38...Bc4 39.Kg3 Kf7-+) 39.Re3-/+ Bg4 (39...Rc2 40.d6 Rd2-+ (worse 40...Bb5 41.d7 Bd7 42.Re7 Kf8 43.Rd7+=)) 40.hg4+= Rg4 41.Kf3 Rd4 42.Re7 Kf8 43.Ra7 Rd5 44.Rb7 Rb5 45.a7 Ra5 46.Rb8 Ke7 47.a8Q Ra8 48.Ra8 Kd6 (48...h5 49.Rb8+-) 49.Rg8 g5 50.Rg6 Kc5 (50...Ke5 51.Rh6 b5 52.Rh7+-) 51.Rf6 h5 52.Rf5 Kc4 53.Rg5 b5 54.Rh5 b4 55.Rh8 b3 56.Rb8 Kc3 57.Ke4 b2 (57...Kc4 58.f4 b2 59.Rb2 Kc3 60.Rb8 Kc4 61.f5 Kc3 62.f6 Kd2 63.f7 Kc3 64.f8Q Kd2 65.Qd6 Kc1 66.Ke3 Kc2 67.Qd2) 58.f4 Kc2 59.f5 b1Q 60.Rb1 Kb1 61.f6 Kc2 62.f7 Kd2 (62...Kc3 63.f8Q Kc4 64.Qf7 Kc3 65.Qc7 Kb2 66.Kd3 Kb1 67.Qb6 Kc1 68.Qb5 Kd1 69.Qb1) 63.f8Q Kc3 64.Qf3 (64.Qc5 Kd2 65.Qc6 Ke2 66.Qc2 Ke1 67.Ke3 Kf1 68.Qf2) 64...Kc4 65.Qd3 Kc5 66.Qd4 (66.Qd5 Kb6 67.Qc4 Kb7 68.Kd5 Kb8 69.Kc6 Ka7 70.Qf7 Ka6 71.Qa2) 66...Kb5 (66...Kc6 67.Qd5 Kb6 68.Qd6 Kb7 69.Ke5 Ka7 70.Kd5 Kb7 71.Kc5 Kc8 72.Qe7 Kb8 73.Kc6 Kc8 74.Qe8) 67.Kd5 Ka6 (67...Ka5 68.Qb2 Ka4 69.Kc4 Ka5 70.Qb5) 68.Qb2 Ka5 69.Kc5 Ka4 70.Qb4 1-0. brucepeng (2025) - luci4real (2030), lichess.org, 2021.

4.c4 a6 5.Nf3=.

4.c4 Bb7 5.e3 c5 (5...a6 6.Nf3=) 6.Nf3 e6 7.Be2 Nbd7 8.Nc3 (8.0-0 Be7+=) 8...g6 (8...Be7 9.0-0=) 9.0-0+= Bg7 10.Qc2 0-0 11.Rfd1 (11.Qd3 Ne4=) 11...Qc7 (11...a6 12.ba6 Ra6 13.Nb5=) 12.a3 Rad8 (12...a6 13.d3=) 13.d3+= h6 14.Ra2 Rfe8 15.a4 d5 16.Rda1 (16.a5 ba5 17.Qa4 d4 18.ed4 cd4=) 16...e5 (16...dc4 17.dc4 Bf3 18.Bf3+=) 17.e4 d4 18.Nd5 Nd5 19.cd5 a5 20.ba6 Ba6 21.Nd2 (21.a5 b5=) 21...Rf8 22.Nc4 Ra8 23.Bc1 Ra7 24.Bd2 Rfa8 25.Bg4 Bc4 26.Qc4 Nf6 27.Bh3 Bf8 28.Qb5 Kg7 29.Rb1 c4 30.f3 c3=+ 31.Bc1 Ra5 32.Qc6 Bd6 33.Rb6 Qc6 34.Rc6 Ra4 35.Rc2 R8a6 36.Ra6 Ra6–/+ ½–½. Cerritelli,Gianluca – Palmizi,Alessandro, Master, 1995.

4.e3 Bb7 5.Nf3 Nbd7 6.d4 g6 (6...a6 7.a4=) 7.Nbd2 Bg7 8.Bd3 c5 9.bc6 Bc6 10.0-0 0-0 11.e4 (11.Rb1 Rc8+=) 11...Bb7 (11...d5 12.e5 Nh5 13.Re1=) 12.Re1 Ng4 (12...d5 13.e5 Nh5 14.Nb3=) 13.h3 (13.Rb1 Qc7+=) 13...Nh6 (13...Ngf6 14.Rb1+=) 14.c4 Re8 15.a4 Ba6 (15...e5 16.a5+=) 16.a5 (16.Qc2 Qc7+=) 16...ba5+= 17.Bc3 Bb7 (17...e5 18.Ba5 Qe7 19.Bc3+=) 18.Nb3+- The pressure on the isolated pawn grows 18...Rc8 (18...a4 19.Na5 Rb8 20.Nb7 Rb7 21.Bd2+-) 19.Na5 (19.Bd2 Kh8+-) 19...Ba8 20.Bd2 Nb6 (20...Kh8!?+-) 21.Qc1+- e5? (better 21...Nf5 22.ef5 Bf3 23.gf3 Bd4+-) 22.Bh6 1–0. DEFFM – GuestKBLT, freechess.org, 2020.

4.e3= Bb7 5.Nf3 Nbd7 6.Be2 g6 7.d4 Bg7 8.c4 c6 9.a4 0-0 10.0-0 Rc8 11.Nbd2 c5 12.d5 h6 13.h3 Kh7 14.Nh4 Re8 15.Qc2 Nf8 16.Ne4 Ne4 17.Bg7 Kg7 18.Qe4 e6 19.Qg4 Qg5 20.Qg5 hg5 21.Nf3 ed5 22.cd5 Kf6 23.Bc4+= Nd7 24.Rfe1 Re7 25.e4 Rce8 26.Nd2 Ne5 27.f3 Ra8 28.Ra3 Rh8 29.Rf1 Rh4 30.Be2 Kg7 31.a5 Rh8 32.ab6 ab6 33.f4 gf4= (33...gf4 34.Rf4 Rhe8=). secgestor – Zagarwinn (1760), internet, 2007.

4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 b6).

4.c4 Bf5 5.Nc3 g6 6.a4 Bg7 7.e3 0-0 8.Nf3 Nbd7 9.d4 cd4 10.Nd4 Ne4 11.Be2 Ndc5 12.Ne4 Be4 13.0-0 e5 14.Nf3 Qf6 15.Be5 de5 16.Ne5 Qe5 17.Ra2 Qg5 18.Bf3 Bf3 19.Qf3 Rab8 20.Qd5 Qd5 21.cd5 Rfd8 22.e4 Ne4 0–1. A_VB – amey1847, lichess.org, 2019.

4.bc6 bc6 5.e3 Qb6 6.Bf6 gf6 7.d4 Bg7 8.Be2 Ba6 9.Ba6 Na6 10.Ne2 0-0-0 11.c4 f5 12.Nd2 e5 13.Rb1 Qc7 14.d5 c5 15.Qa4 Nb8 16.0-0 h5 17.Rb2 Nd7?? 18.Qa6 (18.Qa6 Qb7 19.Qb7) 1–0. wojtekkk – polynesia46, kurnik, 2011.

4.Nf3 e5 5.e4 (5.e3!?=+) 5...Ne4–/+ 6.Bd3 Nf6 7.0-0 Be7 8.Re1 Bg4 9.a4 Nbd7 10.h3 Bh5 11.a5 0-0 12.c4 b6 13.Nc3 (13.g4 Bg6 14.Bg6 fg6=+) 13...Re8 (13...ba5!? 14.g4 Bg6 15.Bg6 fg6–/+) 14.a6 h6 15.Ne4 Ne4 16.Be4 Rb8 17.Qc2 Nf6 18.Bc6 White fights for the Initiative 18...Rf8 (18...Bg6 19.d3 Rf8 20.Nh4=) 19.Nh4 Nd5 (better 19...Rc8!?=) 20.Bd5+- Bh4 21.g3 Qg5 (21...Bg5 22.g4 Qc8 23.gh5 Qh3 24.Ra3 Qh5 25.Qf5+-) 22.Re3+- Kh8 (22...Bg6 23.d3+-) 23.Qe4 Bg3 24.Rg3 Qd2? (better 24...Bg6 25.Qe3 Qe3 26.de3 Rbe8+-) 25.Bc3 Qe2 26.Re3 f5 27.Qb1 (27.Re2?! fe4 28.Re3 Rf6+-) 27...Qe3 28.fe3 Rf6 29.Qd3 Rbf8 Black intends f4 30.Rf1 f4 (30...Bg6 31.Qe2+-) 31.ef4 Rg6 (31...Bg6 32.Qd1+-) 32.Kh2 ef4 (32...Rgf6 33.Be4 R8f7 34.Re1+-) 33.Be4 Rg3 (33...Re6 34.Qd5 Re4 35.Qe4 Kg8+-) 34.Rf4! (34.Rf4 Rf6 35.Rf6 Rh3 36.Qh3 gf6 37.Qe6 Kg7 38.Qf6 Kg8 39.Qg7) 1–0. DEFFM – GuestMSJY, freechess.org, 2020.

4.g3 a6=+ 5.c4 e6 6.Bg2 Be7 7.a4 ab5 8.cb5 Ra7 9.Nf3= b6 10.0-0 Bb7 11.Qc2 Nbd7 12.Nc3 0-0=+ 13.d3 d5 14.e3 Qa8 15.Ne2 Rc8 16.Qb1 Ra4 17.Nc3 Ra1 18.Ba1? d4–+ 19.Ne4 Ne4 20.de4 Be4 21.Qd1 d3 22.Ne1 c4 23.Be4 Qe4 24.Bc3 Bf6 25.Qd2 Bc3 26.Qc3 Rc5 27.Ng2 Rb5 28.f3 Qd5 29.Nf4 Qc5 30.Rc1 Qe3 31.Kg2 Ne5 0–1. mic (2195) – jcosta (2430), net–chess.com, 2008.

4.a4 cb5 5.ab5 Bd7 6.e3 e5 7.c4 Be7 8.Nc3 0-0 9.Nf3 a6 10.Be2 ab5?? (better 10...Qc7=) 11.Ra8+- (11.Ra8 bc4 12.Bc4+-) 1–0. BeepBeepImAJeep (2605) – hugobrasil (1765), lichess.org, 2016.

4.a4 Nbd7 5.c4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 cb5 9.cb5 g6 10.Nf3 Bg7 11.Be2 0-0 12.0-0 Qa5 13.Nc3 b6 14.Bb2 Bb7 15.Qb3 Nc5 16.Qc4 Qa8 17.Ra1 Qb8 18.d4 Nce4 19.Ne4 Ne4 20.h3 Rc8 21.Qd3 Nf6 (21...Bd5 22.Nd2 Qb7 23.f3 Nd2 24.Qd2=) 22.Rc1 (22.Nd2 Qc7+=) 22...Be4 23.Rc8 Qc8 24.Qc4 Qc4 25.Bc4 Bd5 26.Bd3 Be4 27.Be2 Nd5 28.Nd2 Bc2 29.Nc4 f5 30.Kf1 Ba4 31.Nd2 (31.Na3 Bb3=) 31...Nc7 The isolani on b5 becomes a target 32.Nc4 Bb5 33.Nb6 Be2 34.Ke2 Kf7 35.Kd3 e6 36.f4 Ke7 37.Ba3 Bf8 38.Nc8 Kd7 39.Nb6 Kc6 40.Nc4 Nb5 41.Bb4 Be7 42.g4 Bd8 43.Nb2 (43.g5 Kd5=) 43...Bb6 (43...fg4 44.hg4 h5 45.g5=) 44.Nc4 Bc7 45.Nb2 (45.g5 e5=) 45...e5 (45...fg4 46.hg4 h5 47.gh5 gh5 48.Nd1=+) 46.fe5 de5 47.Nd1 Kd5 48.Bc5 (48.de5 Be5 49.Nf2 Bd6 50.Bd6 Nd6=) 48...ed4 (48...e4 49.Kc2=+) 49.Bd4 Nd4 50.ed4 fg4 51.hg4 Bb6 52.Ne3 Kd6? (better 52...Ke6=) 53.Nc4+- Kc6 54.Ne5?? (54.Nb6 Kb5 55.g5+-) 54...Kd5= 55.Nf7 (better 55.Nf3=) 55...Bd4-/+ 56.Ng5 h5 (better 56...h6!? 57.Nf7 Bg7-/+) 57.gh5=+ gh5 58.Nf3 (58.Ne6!=+) 58...Bf6 59.Ke2 Ke4 60.Kf2 Kf4 61.Kg2 Kg4 Black intends h4 (61...Kf5=+) 62.Kf2 (62.Ne5 Kf5=) 62...Bh4 (better 62...Be7!?-/+) 63.Kg2 Bg3 64.Ng1 h4 65.Nh3 Be5 66.Ng1 Bd4 67.Nh3 Bc5 68.Kh2 Kf3 (68...Bd6 69.Kg2=) 69.Kh1 (69.Ng5 Ke2=) 69...Kg3 70.Ng5 Be3 0-1. Antares_Sco (1890) - Aleksandr79 (2215), Eastern SuperBlitz Arena, lichess.org, 2016.

4.a4 g6 5.e3 Bg7 6.Nf3 0-0 7.d4 Ne4 (7...Nbd7 8.Nc3=+) 8.Bd3 Bf5? (better 8...Qa5 9.c3 d5=) 9.g4!+- Nf2 (9...Bg4 10.Be4 Deflection) 10.Kf2 Bg4 11.Nbd2 (11.Rg1 f5 12.Nc3+-) 11...e6 (11...Nd7 12.c3+-) 12.Rg1 (12.Qg1!? Bf3 13.Nf3 Nd7+-) 12...f5 13.Kg2 Nd7 14.h3 Bh5 15.c3 (15.Qb1!?+-) 15...e5+- 16.de5 Ne5 17.Be2 Bh6 18.Ne5 Be2 19.Qe2 de5 20.Kh2 Rf7 (20...e4 21.Rad1 Qd3 22.Qd3 ed3 23.Rge1+=) 21.bc6 bc6 22.Nc4 Qe7 (22...f4 23.Rad1 Qf6 24.ef4 Bf4 25.Kg2+-) 23.Ba3+- Qe6 24.Rad1 Re8? (better 24...Rb8+-) 25.Nd6 f4 26.Ne8 fe3 (26...Qe8 27.Rgf1 a5+-) 27.Rd8 Bf4 (27...Rf2 28.Qf2! ef2 29.Nc7 Kf7 30.Ne6 fg1Q 31.Kg1 Ke6 32.Rd6 Kf5+-) 28.Kg2 (28.Kg2 Bg5 29.Rgd1 Bd8 30.Rd8 Rf2 31.Qf2 Qh3 32.Kh3 ef2 33.Nc7 Kg7 34.Rf8 h6 35.Ne8 Kh7 36.Rf2 g5 37.Kg4 Kg8 38.Rf8 Kh7 39.Rf7 Kg8 40.Ra7 Kh8 41.Nf6 h5 42.Kg5 h4 43.Rh7) 1–0. DEFFM – GuestCNFT, freechess.org, 2019.

4.c4 cb5 5.cb5 e5 6.a4 Nbd7 7.e3 Be7 8.Nf3 b6 (8...0-0 9.Be2=) 9.Be2= Bb7 10.d4 ed4 (10...0-0 11.Nc3=) 11.ed4 (11.Nd4 0-0+=) 11...0-0= 12.0-0 Re8 13.Re1 Nf8 14.Nc3 Ng6 15.g3 (15.Qd2 Ne4 16.Ne4 Be4=) 15...Rc8 16.Qb3 Qc7 17.Rac1 Qd7 18.Bc4?? (18.d5 Qh3=) 18...Rf8?? (better 18...Rc4 19.Qc4 Bf3-+) 19.Ng5 h6?? (better 19...d5 20.Bd3 Rfe8=) 20.Bf7+- Kh8 21.Bg6 (better 21.Be6!? Qe8 22.Bc8 Bc8+-) 21...hg5 22.Re2 (22.Qe6 Rc7+-) 22...d5 (22...Qh3!? 23.Ne4 Bd5+/-) 23.Rce1 Bd6 24.Qd1 (better 24.Ba3+-) 24...Bc6?? (better 24...Bb4 25.Re3 Rc4+/-) 25.Qd2 (25.bc6 Rc6 26.Qb3 Qh3 27.Nd5 Nd5 28.Qd5 Bg3 29.hg3 Rg6+-) 25...Rcd8 (25...Bb7 26.Qg5 Qg4 27.Qg4 Ng4 28.h3+-) 26.Qg5 (better 26.bc6 Qc6 27.Qg5 Bb4+-) 26...Nh7 (26...Ba8+-) 27.Qh5 (27.Qh5 Qh3 28.Qh3 Bb5 29.Qh7; 27.Qh4 Qh3 28.Qh3 Bb5 29.Qh7) 1-0. ClayPigeons (2070) - AchillesBobby (1915), Rated Bullet game, lichess.org, 2020.

4.c4 e5 5.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 c6).

4.e3 Bd7 5.a4 e5=+ 6.c4 Be7 7.Nf3 0-0 8.Nc3 Re8 9.d3 d5 10.Be2 e4 11.de4 de4 12.Nd4 c5 13.Nc2 Bf5 14.0-0 Nbd7 15.Nd5 Nb6 16.Ne7 Qe7 17.h3 Rad8 18.Qc1 Nbd7 19.Ne1 Ne5=+ 20.g4 Neg4 21.hg4= Bg4 22.Bf6 Qf6 23.Bg4 Qg5 24.Qd1?? Rd1–+ (24...Rd1 25.Rd1 Qg4 26.Ng2 Qe2–+) 0–1. mic (2195) – timesup (2245), net–chess.com, 2009.

4.c4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 e5 8.d4 ed4 9.Bd4 Be7 (9...d5 10.e3=) 10.Nf3 0-0 11.e3 d5 (11...Be6 12.Bd3=) 12.Nc3 (12.Bf6 Bf6 13.Qd5 c6 14.bc6 bc6=) 12...Bb4= 13.Qb3 (better 13.Be2!?=) 13...c5-/+ 14.bc6 Nc6 15.cd5?? (better 15.Ke2 dc4 16.Qc4 Nd4 17.Nd4-+) 15...Bc3 (better 15...Nd4 16.Nd4 Qa5-+) 16.Bc3+- (16.Qc3?! Nd4 17.Nd4 Qa8=) 16...Ne7 17.Bf6 gf6 18.Bd3 (18.Nd2!? Qa5 19.Qb7 Qd5 20.Qd5 Nd5+-) 18...Qa5+/- 19.Ke2 Ra8 (better 19...Nd5!? 20.Qb7 Nc3 21.Kf1 Bc8+/-) 20.Qb7+- Qa2 21.Nd2 Ra7? (better 21...Qd5 22.Rb1 Rd8 23.Qd5 Nd5+-) 22.Qb8 Kg7 23.Qg3 Ng6 24.Rd1 (better 24.Bc4 Qa3 25.Rb1+-) 24...Qd5 25.h4 (better 25.Be4 Qb5 26.Ke1+-) 25...Kf8?? (25...Ra2 26.f3+/-) 26.f3 (better 26.Qb8 Kg7 27.Qa7+-) 26...Ne5 (26...Ra2 27.Qc7 Ne5 28.Be4 Bb5 29.Ke1 Nd3 30.Kf1 Nc5 31.Kg1 Ne4 32.fe4+=) 27.Be4 (27.Bh7 Ra2 28.Ke1+/-) 27...Bb5 28.Kf2 (better 28.Ke1 Qc5 29.Qf4+/-) 28...Qc6?? (better 28...Qd6 29.f4 Nd3 30.Bd3 Qd3=+) 29.Qf4 (29.Bc6 Bc6 30.Nc4 Ra2 31.Kg1 Nc4 32.Rd8 Be8 33.Qb8+-) 29...Qa6 (29...Qd6 30.Qh6 Ke7 31.Bb1+=) 30.Qh6 (better 30.Bh7!? Rd7 31.Bf5+-) 30...Ke7+/- 31.Bh7 (better 31.Qh5+/-) 31...Nd3? (31...Rd7 32.Qf4 Rd6=) 32.Bd3+- Bd3 33.Qf4 Bg6 (33...Ke8 34.Ne4 Be4 35.Qe4 (worse 35.fe4 Ke7+-) 35...Qe6 36.h5+-) 34.Qd4 (34.Qb4 Qd6 35.Qd6 Kd6+-) 34...Rd7 35.Qe4?? (35.Qc5 Ke8 36.e4 Rd6+-) 35...Qe6 (better 35...Be4 36.fe4 Rd3-+) 36.Qe6 Ke6 (36...fe6 37.e4+-) 37.Ke2 Bc2 38.Ke1?? (better 38.Rc1 Bd3 39.Kf2+-) 38...Bd1+= 39.Kd1 Ke5 40.Ke2 f5 41.Nc4 Ke6 42.f4 Rd8 43.Kf3 Rh8 44.Ne5 (44.g3 Rc8 45.Ne5 Rc3+=) 44...Rg8 (better 44...Rh4!? 45.Nc6 Rh8-/+) 45.g3+= Rh8 46.Nc4 Ra8 47.Nd2 (47.Nb2 Rd8+=) 47...Ra3= 48.Nc4 Ra4 (48...Ra8 49.Ke2+=) 49.Ne5 Ra2 50.Nc6 Ra1 51.Nd4 Kf6 52.Ke2 (better 52.Nc2 Rf1 53.Ke2+=) 52...Kg7?? (52...Ra2 53.Kd3=) 53.Kd3?? (53.Nf5 Kf6 54.g4 Rg1+-) 53...Ra2?? (53...Kg6 54.Nf3=) 54.Kc4?? (54.Nf5 Kf6 55.e4 Ra3 56.Ke2 Ra2 57.Kf3 Ra3 58.Kg4 Ra8+-) 54...Ra3?? (better 54...Kf6=) 55.Kd5?? (55.Nf5 Kf6 56.g4 Ra1+-) 55...Ra8?? (better 55...Kf6!? 56.e4 Ra5 57.Kc4 fe4-/+) 56.Ke5?? (56.Nf5 Kf6 57.g4 Rg8+-) 56...Rd8?? (better 56...Ra5 57.Kd6 Kf6=) 57.Kf5 Rc8 0-1. ClayPigeons (2090) - iwillnotrush (2045), Rated Bullet game, lichess.org, 2020.

4.e3 c6 5.a4 Qa5 6.Nf3 a6 (6...Qb4 7.Bc3 Qg4 8.h3+=) 7.Be2 (7.Na3 g6+- (7...Qa4? 8.Nc4 Qb4 9.Bd4+-)) 7...Qb4+= 8.Qc1 (8.Bc3!? Qe4 9.0-0+=) 8...ab5= (worse 8...cb5 9.ab5 a5 10.Nc3+-) 9.ab5 Ra1 10.Ba1 cb5 11.0-0 Nc6 (11...Qa5!? 12.Na3 d5=) 12.Na3+= Na5? (better 12...Qa5 13.Nb5 Ne4+-) 13.Bc3+- Qa4 14.Qb2 Nd5 (14...b4 15.Bb4 Nc6 16.Bc3+-) 15.Bg7 (better 15.Ra1!? Nc3 16.dc3 e5+-) 15...Bg7 (15...Rg8 16.Bf8 Kf8 17.Ra1+- (17.Bb5?! Rg2 18.Kg2 Qg4 19.Kh1 Qf3 20.Kg1 Qg4 21.Kh1 Qf3 22.Kg1 Qg4 23.Kh1 Qf3=)) 16.Qg7 Rf8 17.Qb2 Rg8 (17...Qb4 18.Qb4 Nb4 19.Ra1+-) 18.Ra1 Qg4 (18...Qb4 19.Qb4 Nb4 20.Nb5+-) 19.g3 Qh3?? (better 19...Qb4 20.Qb4 Nb4 21.Nb5 b6+-) 20.Nb5 b6 21.Nc7!! Nc7 22.Qb6 Nc6 (22...Ne6 23.Qb8 Nd8 24.Ra5+-) 23.Qc7 f6 (23...Kf8 24.Bb5 Ne5 25.Ra8 Kg7 26.Rg8 Kg8 27.Ne5 Bb5 28.Qb8 Kg7 29.Qb5 Qh5+-) 24.Ra8 (better 24.Bc4!? Be6 25.Qc6 Kf7+-) 24...Kf7 25.Bc4 d5 (25...Be6 26.Be6 Qe6 27.Rg8 Kg8 28.Qc6+-) 26.Bd5 Be6 27.Be6 (better 27.Qc6 Ra8 28.Qa8 Bd5 29.Qd5 Qe6 30.Qh5 Kg7 31.Nd4+-) 27...Qe6 28.Ra6 Rc8 29.Qf4 Qd5 (29...Kf8 30.Qh4 Qf7 31.Kg2+-) 30.c4 Qh5 31.Qe4 Nd8 (31...Qc5 32.Qh7 Ke8 33.d3+-) 32.Ra7 (better 32.g4!? Qc5 33.Qh7 Ke8 34.Qg8 Kd7+-) 32...Nc6 33.Ra6 Nd8 34.g4 Qg6 (34...Qh6+-) 35.Ne5! (35.Ne5 fe5 36.Rg6 hg6 37.Qe5+-) 1–0. DEFFM – GuestJHBM, freechess.org, 2019.

4.e3 c6 5.a4 g6 6.Nf3 Bg7 7.Be2 0-0 8.0-0 a6 9.c4 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Nc3 d5 13.Qb3 dc4 14.Bc4 Bg4? (better 14...cb5!? 15.Nb5 Na6+=) 15.Ng5 (15.Bf7 Kh8+-) 15...Nd5+- 16.Nf7 (16.Nd5?! cd5 17.Bg7 dc4+=) 16...Rf7? (16...Rf7 17.bc6 Pinning (17.bc6 Decoy); 16...Kf7 17.bc6 Combination) 17.bc6+- e6 18.Nd5 (worse 18.Bd5 ed5 19.cb7 Bf5=+; 18.cb7?! Bc3 19.Bc3 Nc3 20.dc3 Kg7+-) 18...Ba1?? (better 18...Nc6 19.Bc3 Bc3 20.Nc3 Qc5 21.Be6 Be6 22.Qe6 Kg7+-) 19.c7 Nc6 (19...Rc7 20.Nc7 Qc7 21.Be6 Be6 22.Qe6 Qf7 23.Qc8 Qf8+-) 20.c8Q (20.c8Q Rf8 21.Qd7+-) 1–0. DEFFM – GuestXBYW, freechess.org, 2019.

4.e3 g6 5.c4 Bg7 6.a4 0-0 7.d4 a6 8.Nf3 ab5 9.cb5 Re8 10.Nbd2 Bg4 11.Be2 Nfd7 12.0-0 e5 13.de5 Ne5 14.Ne5 Be2 15.Qe2 Be5 16.Be5 de5 17.Nc4 Nd7 18.Rfd1 Qe7 19.Qf3 Rad8 20.Qb7 Nc5 21.Qf3 e4 22.Qe2 Nd3 23.Nb2 Qe5 24.Rac1 Nc1 0–1. A_VB – Sair77, lichess.org, 2018.

4.e3 g6 5.Qf3 c6 6.Bf6 ef6 7.Nc3 Be7 8.Rb1 cb5 (better is 8...0-0!?=) 9.Qb7+/– (9.Nb5?! Nc6=; < 9.Rb5 Bc6 10.Nd5 Bb5 11.Bb5 Kf8=+) 9...Nc6 10.Bb5 Qb8?? (better is 10...Rb8 11.Qa6 Rb6+/–) 11.Bc6+- Bc6 (11...Qb7 12.Bb7 Rb8+-) 12.Qc6 Kf8 13.Rb8 Rb8 14.Nd5 Bd8 (14...Rb1 15.Ke2 Bd8+-) 15.Qd6 Kg8 16.Qb8 Kg7 17.Nf3 (17...Bb6 18.Qd6+-; 17.Qa7 Re8+-) 1–0. Taulien,Hans_Juergen – Pieleck,Andreas, RSX9E – A00 – Sokolsky–1, 2002.

4.a4 a5 5.c4 b6 6.e3 Bb7 7.Nf3 g6 8.Be2 Bg7 9.0-0 0-0 10.Nc3 e5 11.d4 Re8 12.h3 Qe7 13.de5 (13.d5 e4 14.Nd4 Nc5=) 13...de5= 14.Nd5 (14.Qc2 Nc5=) 14...Nd5=+ 15.cd5 Nc5 16.Bc4 Rad8 17.Qc2 Bd5 18.Bd5 Rd5 19.Rfd1 Red8 (19...c6 20.bc6 Rd6 21.Rd6 Qd6 22.Ba3-/+) 20.Rd5 Rd5 21.Rd1 (better 21.e4!? Rd7 22.Ba3=+) 21...Rd1-/+ 22.Qd1 h6 23.Qd5 e5 draws heavy fire (better 23.Ba3!?-/+) 23...Qd6 24.Qd6 cd6 25.Nd2 (better 25.Ba3 Na4 26.Bd6-+) 25...Na4 26.Ne4 (26.Ba1 d5 27.Nb3-+) 26...Nb2 27.Nd6 a4 28.Nc4 (28.Ne4-+) 28…Nc4 0-1. biktimiroff (2000) - feofan64 (2100), Hourly Bullet Arena, lichess.org, 2020.

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 e5 8.c4 Be7 9.Nf3 0-0 10.Be2 c6 (10...e4 11.Nd4=+) 11.0-0= cb5 12.cb5 Qb6 13.Nc3 Nc5 (13...d5 14.Qc2=) 14.d4+= ed4 15.Nd4 Nce4 16.Qb3?? (16.Ne4 Ne4 17.Bd3 Nc5+-) 16...h6?? (better 16...Nd2 17.Nd5 Nd5 18.Qd5 Nf1 19.Bf1 Qc5–/+) 17.Rd1 Rd8 (17...Nc5 18.Qa2+-) 18.Bf3 (18.Ne4 Ne4 19.Bc4 Rf8+-) 18...Nc3 19.Qc3 (19.Bc3 d5+-) 19...Be6 20.h3 (20.Ne6 fe6 21.Qb4 Rd7+-) 20...Rc8 21.Qb2 Bd5?? (better 21...d5+=) 22.Nf5+- Kf8 (22...Bf8 23.Bd5 (worse 23.Rd5 Nd5 24.Bd5 Qc5+-) 23...Rc5 24.Nh6 Kh7 25.Qb1 Kh6 26.Bf6 gf6 27.Qf5+-) 23.Bd5 (23.Bd5 Rc5 24.Qa2 (worse 24.Ne7 Ke7 25.Bf3 Rb5+-) 24...Qb5 25.Bf7+-) 1–0. BeepBeepImAJeep (2670) – SoggyNacho (2225), lichess.org, 2016.

4.a4 b6 5.e3 Bb7 6.Nf3 g6 7.Be2 Bg7 8.0-0 0-0 9.c4 Nc5 (9...c5 10.bc6 Bc6 11.d4=) 10.d4 Ncd7 11.Nc3 Ne4 (11...a6 12.Qb3+=) 12.Nd2 (12.Ne4 Be4 13.Nd2 Bb7+-) 12...Nd2+= 13.Qd2 e5 14.Nd5 Bd5 (14...a6 15.de5 de5 16.Rfd1+=) 15.cd5+- ed4 16.Bd4 Bd4 17.ed4 (17.Qd4 Nc5 18.Ra3 Re8+-) 17...Qh4 18.Rfc1 Nf6 (18...Rac8 19.Rc6+=) 19.Bf3 (19.Bf3 Rfc8 20.a5+=; 19.Rc7 Nd5 20.Rc6 Rfd8+-) 1–0. BeepBeepImAJeep – feb82, lichess.org, 2018.

4.a4 c5 5.e3 a6 (5...e5 6.Nf3=+) 6.Nf3 ab5 (6...e5 7.Be2=) 7.ab5 (better 7.Bb5 e5 8.0-0=) 7...g6?? (better 7...Ra1 8.Ba1 e5=) 8.Ra8+- Bg7 9.c4 Nb6 10.Ra1 0-0 11.Be2 Bg4 12.Qc2 Bf5 13.Qc1 (13.d3 Qc7+-) 13...e5 (13...d5 14.cd5 Qd5 15.0-0+-) 14.d4 (better 14.d3!? Bg4+-) 14...ed4 15.ed4 Re8 16.dc5 (16.Kf1 Qe7 17.Nc3 Nfd5 18.cd5 cd4 19.Nd4 Bd4+-) 16...dc5 17.Nc3 (better 17.Qd2 Qe7 18.Qe3+-) 17...Nc4 18.0-0 (better 18.Ra2 Nb2 A) worse 19.Qb2 Ne4 20.0-0 Nc3–/+ (20...Bc3?! 21.Qc1=); B) 19.Rb2+-) 18...Nb2+= 19.Qb2 Ne4 20.Rad1 (20.Bc4 Nc3 21.Qb3 Be6+=) 20...Qa5 (20...Qf6 21.Nd4 Nc3 22.Qc3 cd4 23.Qd2+=) 21.Qa2 Qc3 (21...Bc3 22.Qa5 Ba5 23.Bc4=) 22.Bc4+= Qf6 23.Qa7 Bg4 24.Be2?? (better 24.Rd3+-) 24...Nc3–+ 25.Bc4 Nd1 26.Rd1 Bf3 27.gf3 Qf3 28.Rf1 (28.Qa4 Bd4 29.Rd4 cd4 30.Bf7 Kf7 31.Qc4 Kf6 32.Qd4 Kg5 33.Qd2 Kh5–+) 28...Qg4 29.Kh1 Qc4 30.Qb7 Qf1 0–1. RichardSommer (2200) – Joqueen90 (2145), lichess.org, 2020.

4.a4 c6 5.e3 cb5 6.ab5 e5 7.c4 Be7 8.Nf3 0-0 9.Be2 Nb6 (9...e4 10.Nd4=) 10.0-0 Bf5 (10...Be6 11.d3=) 11.d4 Rc8? (11...e4 12.Nfd2+=) 12.Nbd2 (12.de5 de5 13.Ra7 e4 14.Qd8 Rfd8+-) 12...ed4 (better 12...e4!? 13.Ne1 Ra8+=) 13.Nd4+- (13.ed4?! Ra8+=; worse 13.Bd4 Ra8+-; 13.Ra7 d3 14.Rb7 d5 15.cd5 Nfd5=) 13...d5?? (better 13...Be6 14.Ra7 Qd7+-) 14.Nf5 dc4 (14...Bb4 15.cd5 Qd5 16.Bg4+- (16.Ra7?! Qf5 17.Rb7 Rb8 18.Rb8 Rb8+-)) 15.Ne7 Qe7 16.Ba3 (worse 16.Ra7 Rfd8 17.Qc2 Nfd5+-) 16...Qe6 17.Bf8 Kf8 18.Nf3 (18.Ra7 Rc7+-) 18...g6 (18...Ra8 19.Nd4 Qd6 20.Qc2+-) 19.Nd4 (19.Ra7 Qd5 20.Qd5 Nfd5 21.Rb7 Rc7 22.Rc7 Nc7+-) 19...Qe7 20.Ra7 Kg7 (20...Rc7 21.Bf3+-) 21.Bf3 (21.Nc6 Qc7+-) 21...Rc7 22.Qc2 h5 (22...Nc8 23.Ra5+-) 23.Rc1 h4 24.h3 Ne8 25.Qc3 Nd6 (25...Nf6+-) 26.Nf5 (26.Nf5 Kh7 27.Qg7) 1–0. BeepBeepImAJeep (2585) – ChuckLiddell (2095), lichess.org, 2017.

4.a4 e5 (---> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 Nbd7).

4.a4 e6 5.e3 Be7 6.c4 (6.Nf3 0-0=) 6...0-0 7.Nf3 a6 (7...e5 8.d4=+) 8.Be2= ab5 9.ab5 Ra1 10.Ba1 c6 (10...Re8 11.0-0=) 11.0-0 d5 12.d4 dc4 13.Bc4 (13.bc6 bc6 14.Nbd2 c5=) 13...c5 (13...Nb6 14.Bd3=) 14.Nbd2 cd4 15.Bd4 Nb6 (15...Bb4 16.Qb1 Bd6 17.Bd3+=) 16.Be2 Nbd5 17.Qa1 Bd7 18.Ne5 Qa8 (18...Qc8!?+=) 19.Nd7+- Nd7 20.Bg7 Qa1 21.Ba1 Rc8 22.Ne4 h5 (better 22...f5!? 23.Ng3 Nc3+-) 23.Bh5+- Ne5?? (better 23...Rc2+-) 1–0. BeepBeepImAJeep (2615) – Berthe (2390), lichess.org, 2015.

4.c4 e5 5.e3 Be7 6.Qc2 0-0 7.Nf3 a6 8.a4 ab5 (8...e4 9.Nd4=+) 9.ab5= Ra1 10.Ba1 b6 (10...Nc5 11.d4 ed4 12.ed4=+) 11.d3 Bb7 12.Nbd2 Nc5 13.Be2 Qa8 14.0-0 h6 (14...Qa4 15.Qa4 Na4 16.Nh4=) 15.d4+= ed4 16.ed4 Nce4 17.d5 Nd2 18.Nd2 Qc8 19.Re1 Qd8 20.Bd3 Nd7 21.Ne4 Ne5 22.Bf1 Bc8 23.f4 Ng6 24.g3 (24.Qc3 f6+/-) 24...Re8 25.Qc3 Bf8 26.Bd3 Bf5 27.Kg2 Be4 (27...Bd7 28.Bb2+=) 28.Be4 Ne7 (28...Qe7 29.Re2+/-) 29.Bc2 (better 29.f5 f6 30.Bb2+-) 29...Nc8? (better 29...Ng6+/-) 30.Qd3+- g6 31.Qc3 f6 32.Re8?? (better 32.Bg6 Re1 33.Qe1+-) 32...Qe8 33.Qf6 (better 33.Qd3+-) 33...Qe2= 34.Kh3?? (34.Kg1 Qe3 35.Kg2 Qe2 36.Kg1 Qe1 37.Kg2 Qe2=) 34...Qh5 (better 34...Qf1 35.Kg4 h5 36.Kg5 Be7 37.Kg6 Bf6 38.Bf6 Kf8-+ (worse 38...Qc4 39.Bf5-+)) 35.Kg2= Qe2 36.Kg1 Qe1 37.Kg2 Qe2 ½-½. bjoern (2060) - sopanka (2135), Rated Bullet game, lichess.org, 2014.

4.c4 g6 5.e3 Bg7 6.d4 0-0 7.Nf3 c6 8.a4 (8.Bd3 cb5 9.cb5 e5=) 8...cb5 (8...c5 9.Be2=) 9.ab5 b6 (9...Nb6 10.Nbd2=) 10.Nc3 Bb7 11.Be2 e5 12.0-0 ed4 13.ed4 Re8 14.Re1 h5 (14...a5 15.ba6 Ba6 16.Nd2+=) 15.Ba3 Qc7 16.Qb3 Ne4 17.Nd5 (17.Bb2 Nc3 18.Bc3 a6+=) 17...Bd5+= 18.cd5 Qc3 19.Qd1 Qc7 (19...Rac8 20.Bd3 f5 21.Re2+=) 20.Rc1+/- Qd8 21.Rc6 Attacking the isolated pawn on d6 21...Nb8 22.Rc2 a6 23.ba6 Na6 24.Rc6?? (better 24.Bb5 Re7 25.Qd3+/-) 24...Nb8-/+ 25.Bb2 Nc6 26.dc6 d5 27.Bb5 (27.Qb3 Qd6-/+) 27...Qd6 (27...Nd6 28.Be2-+) 28.Qb3 Rec8 29.Ne5 (29.Rc1 Rc7-/+) 29...Nd2 (29...Be5!? 30.de5 Qc5 31.Re3-+) 30.Qc3 (30.Qd3 Nc4 31.Nc4=+) 30...Nc4 (better 30...Be5 31.de5 Qc5-/+) 31.Nc4= dc4 32.Qc4 Ra7 33.Bc3 Rac7 34.Rd1 Rc6 35.Bc6 Rc6 (35...Rc6 36.Qb3 Qd8=) 0-1. ClayPigeons (2110) - MarioForce (2175), Rated Bullet game, lichess.org, 2021.

4.c4 g6 5.e3 Bg7 6.Nf3 0-0 7.d4 c6 8.a4 (8.Bd3 cb5 9.cb5 e5=) 8...cb5 (8...c5 9.Be2=) 9.ab5 b6 (9...Nb6 10.Bd3=) 10.Qb3 (10.Bd3 Qc7+=) 10...Bb7 11.Be2 Rc8 (11...a6!?+=) 12.Ra7+/- Bf3 (12...Qc7!?+/-) 13.Bf3+- (worse 13.gf3 e5+/-) 13...e5 14.0-0 ed4 15.ed4 Re8 16.Nd2 (16.Nc3 Rc7 17.Ra8 Rc8 18.Rc8 Qc8+-) 16...Nf8 (16...Rc7 17.Ra6+-) 17.Ba3 (17.Bc6!? N8d7+-) 17...Ne6 18.d5 Nd4 (18...Nc5 19.Qd1+/-) 19.Qd3+- Nd7 (better 19...Rc7 20.Rc7 Nf3 21.Qf3 Qc7+-) 20.Ne4?? (better 20.Bd6 Ne5 21.Be5 Be5 22.g3+-) 20...Ne5=+ 21.Qd1 Attacking the isolated pawn on d6 21...Nef3 (21...Ndf3!? 22.gf3 Nc4-/+) 22.gf3= Qh4 (22...Rc4 23.Qd3 Nb5 24.Qc4 Na7 25.Nd6 Qg5 26.Kh1=) 23.Nd6?? (23.Bd6 Rc4 24.Qd3 Rcc8=) 23...Qh3 (23...Be5 24.f4 Qf4 25.Qh5 gh5 26.Ra1 Qh2 27.Kf1 Qh1) 24.Rf7?? (24.Nc8 Nf3 25.Qf3 Qf3 26.Ne7 Kh8 27.Bd6-/+) 24...Rf8?? (24...Ne2 25.Qe2 Re2 26.Rg7 Kg7 27.Nc8 Qc8 28.c5-+) 25.Qd4 (better 25.Rg7 Kg7 26.Qd4 Kh6 27.Nc8 Rf3 28.Bc1 g5 29.Re1+-) 25...Bd4-+ 26.Rf8 Rf8 27.Ne4 Rf3 28.Bc1 (28.Bd6-+) 28...Qg4 29.Kh1 (29.Ng3 Rg3 30.hg3 Qg3 31.Kh1 Qh3 32.Kg1 Be5 33.f4 Bd4 34.Be3 Be3 35.Rf2 Qg3 36.Kh1 Qf2 37.c5 Qg1) 29...Qe4 30.Be3 (30.Kg2 Rf2 31.Kh3 Qf3 32.Kh4 Rh2 33.Kg5 Rh5) 30...Re3 (30...Rf2 31.Kg1 Qg2) 31.f3 (31.Kg1 Qg4 32.Kh1 Qf3 33.Kg1 Re1 34.Re1 Qf2 35.Kh1 Qf3) 31...Qg4! 32.Rg1?? (32.fg4 Be5 Combination) 32...Re2 (32...Qf3 33.Rg2 Re1) 33.Rg4-/+ (33.fg4?? Bg1 34.Kg1 Rc2-+) 33...Rh2?? (better 33...Bc5-/+) 34.Kh2+- Be5 (34...Bc5 35.Re4 Kf7 36.Re6+-) 35.Kh3 Bd6 (35...Kf7 36.Re4 Bc7 37.Re6+-) 36.Kg2 (36.Re4 Kf7+-) 36...Kg7 (36...Kf7 37.Re4+-) 37.Kh1 (37.Re4 Kf7+-) 37...h6 (37...Kf6 38.Re4 Bc5 39.Re6 Kf5 40.Rc6+-) 38.Kg2 (38.Re4!? Bc5+-) 38...h5 (38...Kf6 39.Re4 Kf5 40.Re6+-) 39.Kf1 (39.Kf1 hg4 40.fg4-+). ClayPigeons (2135) - Entre_las_sombras (2115), Rated Bullet game, lichess.org, 2021.

4.c4 g6 5.g3 Bg7 6.Bg2 0-0 7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nc5 11.0-0 Be6 12.Qc2 c6 13.Nc3 (13.Nd4 cb5 14.Nb5 Qd7=) 13...Qc7 (13...Bc4 14.bc6 bc6 15.Nd4=+) 14.bc6 bc6 15.Na4 Na4 16.Qa4 c5 17.Ng5 Bd7 18.Qc2 h6 (18...Rb8 19.Ne4=) 19.Nh3 (19.Ne4 Ne4 20.Qe4 e5=) 19...Rb8 20.Nf4 Rb4?? (20...e6 21.Bc3=) 21.Nd5 (better 21.Bf6 Bf6 22.Nd5+-) 21...Nd5= 22.Bg7 Kg7 (22...Nf4 23.gf4 Kg7 24.Rb1=+) 23.cd5= Qb6 24.h4 (24.Qc3 Kh7=) 24...Bf5 (24...Bg4 25.Qc3 Kg8 26.Qe3=+) 25.e4 (25.Qc3 Kh7=) 25...Bd7 26.Kh2 Rd4 (26...Qb5 27.Ra1=+) 27.Rb1= Qa5 28.d3 Qa3 29.Rb3 Ba4 30.Ra3 Bc2 31.Bf1 c4 (31...f5 32.f3=+) 32.dc4= Be4 33.Re3 e6 34.f3 Rd2 (34...Bf5!? 35.g4 ed5 36.gf5 dc4 37.fg6 Kg6=) 35.Kg1+= Bf5 36.g4 Bc2 37.de6 fe6 38.Re6 Kf7 39.Re1 Kf6 40.f4 White plans g5 40...Rd4 41.g5 hg5 42.hg5 (42.fg5!? Kf5 43.Rc1=) 42...Kf5=+ 43.Bh3 (43.Rc1!? Be4 44.Bg2=+) 43...Kf4-/+ 44.Re2 (44.Be6 Kg5 45.Rc1 Bd3-/+) 44...Bf5 45.Rf2 Kg5 46.Rg2 (46.Bf5 gf5 47.Rc2 Kg4-+) 46...Kf6 (better 46...Kf4!? 47.Rf2 Kg3 48.Bg2 Rc4 49.Rf3 Kg4 50.Rf2-+) 47.Bf5 gf5 48.Rc2 Ke6 49.Kf2 Re4 (49...Ke5 50.Re2 Kf4 51.Rc2-+) 50.Kf3 Ke5 51.c5 dc5 52.Rc5 Kf6 53.Rc6 Kg5 54.Rc8 Re6 55.Rg8 Kf6 56.Rh8 Ke5 57.Rh5 (57.Rb8 Rd6-/+) 57...Rc6 58.Rh1 (58.Rh4 Rc3 59.Kf2 Rb3-/+) 58...Rc3-+ 59.Ke2 (59.Kf2-+) 59...f4 (59...Ke4 60.Rh8-+) 60.Rf1 (better 60.Rh8!?-/+) 60...Ke4-+ Black intends f3 61.Kd2? (better 61.Ra1-+) 61...Rh3 (better 61...Rd3!? 62.Ke2 f3 63.Kf2 Rd2 64.Kg3 Rg2 65.Kh3-+) 62.Re1 Kf5 (62...Kf3 63.Re2-+) 63.Rf1 (better 63.Ke2-+) 63...Kg4 64.Ke2 f3 (better 64...Re3 65.Kd2 Re8-+) 65.Ke3= Rg3 66.Rf2 Rh3 67.Ke4?? (67.Rf1 Rh6 68.Rg1 Kf5 69.Kf3 Rh3 70.Ke2 Ke4=) 67...Rg3 (better 67...Rh8 68.Rf1 Re8 69.Kd3 Kg3 70.Rg1 Kf4-+) 68.Ke3= Rh3 69.Ke4?? (better 69.Rf1=) 69...Rg3 (better 69...Rh8 70.Rf1 Re8 71.Kd3 Kg3 72.Rg1 Kh3-+) 70.Ke3= ½-½. Zpytasz (1815) - kolaleks (2205), Rated Rapid game, lichess.org, 2016.

4.e3 e5 (---> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Nbd7).

4.e3 g6 5.c4 Bg7 6.d4 0-0 7.Nf3 e5 8.de5 Ng4 9.Be2 Nge5 10.Ne5 (10.Bd4 Nf3 11.Bf3 Ne5=) 10...Ne5=+ 11.Qc2 (11.Bd4 Be6=+) 11...Qf6 (11...Bf5 12.Qd2=+) 12.Nc3= Be6 13.Nd5 Bd5 (13...Qg5!? 14.0-0 Bh3=) 14.cd5+= Qh4 15.0-0 (15.Qc7? Qb4 16.Bc3 Nf3 17.Kf1 Bc3-+) 15...Rac8 16.a4 f5 17.Rad1 (17.a5 c6 18.Rfc1 f4 19.dc6 fe3 20.Qb3 Kh8 21.Qe3 bc6 22.Qa7 Nf3 23.Bf3 Bb2=) 17...f4 18.Rd4 Qg5 (18...Ng4 19.h3 Bd4 20.Bg4 Bb2 21.Be6 Kg7 22.Qb2 Qf6 23.Qf6 Kf6 24.Bc8 Rc8 25.ef4+=) 19.Rf4 (19.ef4!? Rf4 20.Qd2+-) 19...Rf4+= 20.ef4 Qf4 21.Bd1 (21.Bc1 Qh4+=) 21...Rf8 (21...c6 22.g3 Qb4 23.Be5 Be5 24.dc6 bc6 25.bc6+/-) 22.Bc1 (22.Qc7 Nf3 23.Bf3 Bb2 24.Qb7 Be5+=) 22...Qh4 (22...Qf7 23.Be3+=) 23.Qd2 (better 23.Qc7!? Nd3 24.Be3+-) 23...Nc4= 24.Qc2 Ne5? (better 24...Rf7!?=) 25.Qc7+/- Ng4 (25...Nd3 26.Be3+-) 26.Bg4 Qg4 27.Qd6 h5? (27...Qa4!? 28.Qd7 Rf7 29.Qe8 Rf8+/-) 28.Qe6 (28.a5!? h4+-) 28...Qe6 29.de6 Re8 (29...Bc3 30.Be3 Re8 31.Rc1+-) 30.Re1 Kf8 31.f4 (31.Ba3 Kg8+-) 31...Ke7 (31...Rc8 32.Ba3 Ke8 33.Rd1+-) 32.f5! Rd8?? (32...gf5 33.Ba3 Combination) 33.fg6 (33.Ba3!? Ke8 34.fg6 Rd3+-) 33...Kf6 34.Bg5 (better 34.Be3 b6 35.a5 ba5 36.Ba7 Kg6 37.Bb6+-) 34...Kg6?? (better 34...Kg5 35.Re2 Re8-/+) 35.e7 (35.e7 Re8 36.h4+-) 1-0. ClayPigeons (2155) - RSulman (2150), Rated Bullet game, lichess.org, 2021.

4.e3 g6 5.Nf3 Bg7 6.c4 0-0 7.Be2 b6 8.0-0 Bb7 9.d4 c5 10.bc6 Bc6 11.d5 Bb7 12.Nbd2 Nc5 13.Qb1 Bc8 14.e4 e5 15.Bd3 Nd3 16.Qd3 Nh5 17.a4 ½–½. Schwichtenberg,Juergen (2005) – Weber,Siegfried (2265), Hessen–ch Seniors, 2004.

5.c4 Bg7 6.e3 0-0 7.Nf3 e5 8.Be2 Qe7 9.d4 c6 10.0-0 b6? 11.bc6+- Nb8 12.d5 (12.de5 de5 13.Ba3 Qe6 14.Bf8 Bf8+-) 12...Bg4 (12...Na6 13.Nc3+-) 13.Bc3 White intends a5 (13.Nfd2 Be2 14.Qe2 Na6+-) 13...Na6+- 14.Nbd2 Nc5 15.a5 Nfe4 (15...Rfb8 16.ab6 Rb6 17.h3+-) 16.Ne4 Ne4 17.Bb4 f5 18.ab6 ab6 19.Ra8 Ra8 20.Qc2 h6 (20...Nc5 21.Rb1+-) 21.h3+- Bf3 22.Bf3 Nc5 23.Be2 (23.e4 f4+-) 23...e4 24.Rb1 Qc7 25.Bc5 (25.Bc3 Bc3 26.Qc3 Ra6+-) 25...bc5+- 26.Rb7 Qa5 (26...Qc8!?+-) 27.Qb1+- Qd2?? (better 27...Rf8+-) 28.Rb8 (28.Rg7 Kg7 29.Qb7 Kf6 30.Qa8 Qe2 31.Qd8 Kg7 32.Qe7 Kg8 33.c7 Qe1 34.Kh2 Qh1 35.Kh1 f4 36.c8Q) 28...Rb8 29.Qb8 Kh7 30.Bf1 (30.Qd6!? f4 31.c7 fe3 32.fe3 Qe3 33.Kh2 Qc3+-) 30...f4 31.Qb3 (31.Qd6?! fe3 32.fe3 Qe3 33.Kh2 Bd4=) 31...fe3 32.Qe3 (worse 32.fe3 Qa5 33.Qb7 Qd2+-) 32...Qa5 33.Qe4 Be5 (33...Qc7 34.Qe8 Bc3 35.Bd3+-) 34.g3 (better 34.Qb1 h5 35.Qb7 Kh6 36.c7+-) 34...Qc7 35.Bd3 Qf7 (35...Kg8+-) 36.Qg6! Qg6 A pinning theme 37.Bg6 Kg6 38.c7 Kf5 39.c8Q (39.f3 Kg6+-) 39...Ke4 40.Qe6 Kd4 (40...Kd3 41.Qh6 Kc4 42.Qe6+-) 41.Qh6 (better 41.f4!? Bh8+-) 41...Kc4 42.Qd2 Bd4 43.h4 (better 43.Qa2 Kd3+-) 43...Kd5 44.h5 Ke6 (44...c4 45.Qg5 Kc6 46.h6+-) 45.h6 c4 (45...Bf6+-) 46.Qd4 d5 (46...c3 47.h7 Kd7 48.Qa4 Ke7 49.h8Q Ke6 50.Qe4 Kd7 51.Qhe8 Kc7 52.Q4c6) 47.h7 (47.h7 c3 48.h8Q c2 49.Qe8 Kf5 50.Qf4) 1–0. BeepBeepImAJeep (2715) – Satrancistanbul (2375), lichess.org, 2020.

6.c4 Nh5 7.d4 c5 8.Be2 Nhf6 9.d5 0-0 10.Nf3 Ng4 (10...a5!?=) 11.Bg7+= Kg7 12.0-0 Nge5 (12...a6 13.Qd2+=) 13.Qc2 (13.Ne5 de5 14.a5 Nf6+/-) 13...Nf3+= 14.gf3 (14.Bf3 Ne5 15.Nd2 a6+=) 14...Ne5 (14...Re8 15.a5=) 15.f4 Ng4 16.Nd2 Nh6 (16...Qa5 17.Nb3 Qb4 18.Rfb1+=) 17.Kh1 (17.Rfb1 a5=) 17...Bf5 (17...a6 18.a5=) 18.e4 Bg4 19.f3 (19.Bg4 Ng4 20.Qc3 Kg8+=) 19...Bd7 20.Rg1 e6 (20...a6 21.a5=) 21.Qd3 ed5 22.Qd5 Qc7 23.f5 Kh8 (23...Rae8!?+=) 24.Nf1 gf5 (better 24...Be8!?+/-) 25.Qd2+- Ng8?? (25...Ng4 26.fg4 fe4+-) 26.Qg5 (26.Qg5 fe4 27.Qg7) 1-0. ClayPigeons (2175) - miro_aliraqi (2350), Rated Blitz game, lichess.org, 2021.

7.Ne2 a6 8.d4=+.

7.Ne2 a6=+ 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 e5 11.Qc1 (11.d4 ed4 12.Bd4 Re8=) 11...Nc5 12.d4 (12.Qc2 Qe7=+) 12...ed4 (better 12...Nb3 13.Qc3 Na1 14.Qa1 Ng4–/+) 13.f4?? (13.Bd4 Nb3 14.Bf6 Qf6–/+) 13...Ne8 (13...Ng4!? 14.e4 Qh4 15.Qc2–+) 14.Na3? (14.Bd4 Nb3 15.Qb2 Nd4 16.ed4 Qe7 17.Ne2 Nf6–/+) 14...Bd7 (better 14...Qe7 15.Be2 Nb3–+ (worse 15...de3 16.Bg7 Ng7 17.b6–+; 15...Qe3?! 16.Qe3 de3 17.0-0–+)) 15.Ne2?? (better 15.Bd4 Nb3 16.Qb2 Nd4 17.ed4 Qe7 18.Ne2–/+) 15…Bc8 (better 15...Nd3 16.Kd1 Nc1 17.Kc1 d3 18.Bg7 de2 19.Be2 Kg7–+). RichardSommer (2125) – Fralle (2135), lichess.org, 2020.

7.Ne2 b6 8.Ng3 e5 (8...Bb7 9.a5 ba5 10.Ra5=+) 9.Qc1 (9.Be2 a6=) 9...Nc5 10.Kd1? (better 10.Qc2=+) 10...Nd5?? (better 10...Ng4 11.Ke1 Nb3–+) 11.Ne2?? (better 11.cd5 Nb3 12.Qc2 Na1 13.Ba1+-) 11...Bb7 (11...Nd3 12.cd5 Nc1 13.Nc1–+) 12.e4?? (better 12.Ra3 Nb4 13.Ng3–/+) 12...Nd3 (12...Ne4?! 13.Ke1 Qh4 14.Ng3–+) 13.Bc3 (13.cd5 Nc1 14.Nc1 f5–+) 13...Qb8 (13...Nc1 14.Nc1 Nc3 15.Nc3–+) 14.Be5 (14.cd5 Nc1 15.Nc1–+) 14...de5 (better 14...Be5 15.Qa3 Nf2 16.Ke1 Nh1–+) 15.Nbc3 (15.Qa3 Nf2 16.Ke1 Nh1 17.ed5 e4–+) 15...Bc6! 16.Qb2 (16.bc6 Nc1) 16…Nf2 (better 16...Nb2 17.Kc2 Nb4 18.Kb2 Nd3 19.Ka2 Nf2 20.bc6 Nh1–+). RichardSommer (2160) – ayomoses (2080), lichess.org, 2020.

7.Nf3 c6 8.Be2 Rb8 9.0-0 c5 10.d4 b6 (10...cd4 11.Bd4 e5 12.Bb2=) 11.Nc3+= a6 12.Rc1 ab5 (12...Ra8 13.ba6 Ba6 14.Rb1+=) 13.ab5 Ne8 14.Qb3 Nc7 15.d5 Nf6 16.Nd2 (16.Ra1 e6+-) 16...Bg4 17.f3 Bd7 18.Ra1 e6 19.e4 (19.Nde4 ed5 20.Nd5 Ncd5 21.cd5 Ne4 22.Bg7 Nd2+=) 19...ed5 (19...Nh5 20.g3+=) 20.cd5 (20.ed5 Re8+=) 20...Qe8 (20...Nh5 21.f4 Bd4 22.Kh1 Nf4 23.Rf4=) 21.Nc4 White gets the initiative 21...Qe7 22.Ra7 Rfc8 (22...Nfe8 23.f4+-) 23.Rfa1 Nfe8 24.Na4 Bb2 (better 24...Nb5!? 25.Nab6 Bb2 26.Qb2 Na7 27.Nc8 Rc8 28.Ra7 h6+-) 25.Qb2+- (25.Nab2?! Qf6 26.Ne3 Ra8+=; worse 25.Ncb2 Qf6+-) 25...Qd8? (better 25...Na8+-) 26.Nab6 (26.Ncb6 Bb5 27.Bb5 Nb5 28.Qb5 Qf6+-) 26...Rb6 (26...Bb5 27.Nc8 Rc8+-) 27.Nb6 Rb8 28.Nd7 Qd7 29.b6 Qc8 30.Qc3 (better 30.Rb1 c4 31.Kh1 Nd5+-) 30...Na8 (30...Rb6 31.Qa5 Rb7 32.Rb7 Qb7 33.Qc3+-) 31.Qa5 (better 31.b7 Rb7 32.Ba6 Ra7 33.Bc8 Ra1 34.Qa1+-) 31...Nb6 32.Re7 (better 32.Rb1 Qd8 33.Ra6+-) 32...Qd8+= 33.Qa7 (better 33.Re8 Qe8 34.Rb1+=) 33...Nc8?? (33...Ra8 34.Rf7 Ra7 35.Raa7 c4–/+) 34.Qb8 (better 34.Re8 Qe8 35.Qb8 Kg7+-) 34...Qe7 35.Qc8 Qf6 (35...Kg7 36.Ra8 Nf6+-) 36.Qe8 (36.Qe8 Kg7 37.Ra8+-) 1–0. BeepBeepImAJeep (2575) – Cartucho (2245), lichess.org, 2017.

7.Nf3 Re8=+.

(--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6).

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.e3 Be6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.c4 b6 5.h3 Be6 6.e3 c6 7.Nf3 cb5 8.cb5 a6 9.Nc3 (9.ba6 Na6 10.Bf6 gf6+=) 9...ab5 10.Bb5 Bd7 11.Bc4 (better 11.a4+=) 11...Be6 (11...e6 12.0-0=) 12.Bb5 (better 12.Be6!? fe6 13.Ng5+/-) 12...Bd7+= 13.Be2 Nc6 14.0-0 Ne5 (14...e6 15.e4+=) 15.Nd4 (15.Ne5 de5 16.Nb5 e4+/-) 15...Rc8 16.f4 Ng6 (16...Nc4 17.Bc4 Rc4 18.Qb3+=) 17.Bf3 (17.Ba6 Rc5+=) 17...e5= 18.Ndb5 Be7 19.fe5 Ne5 (19...de5 20.a4=) 20.Be2 Rc5? (better 20...0-0=) 21.d4+- Rb5 22.Nb5 Ng6 23.Ba3 (23.d5!? 0-0+-) 23...0-0 24.Bd6 (24.Rc1 d5+-) 24...Bd6 (24...Bb5!? 25.Be7 Qe7 26.Bb5 Qe3 27.Kh2 Rd8+/-) 25.Nd6+- Qc7 (25...Qe7 26.Nc4 b5 27.Nb6 Qe3 28.Kh2+/-) 26.Nb5 (26.Nc4 b5 27.Nb2 Qg3+-) 26...Qc6 (26...Qg3 27.Rf3 Qg5+/-) 27.a4 Nh4 28.Bf3 Nf3 29.Qf3 (29.gf3?! Nd5 30.Kf2 Qh6+/-) 29...Qd6 (29...Qe6+-) 30.Nd6 1-0. ClayPigeons (2125) - blocnot_tetradi (1745), Rated Bullet game, lichess.org, 2020.

4.c4 c6 5.a4 (5.f3 Bc8=) 5...cb5 (5...e5 6.d4 ed4 7.Bd4=+) 6.ab5= a6 7.Nc3 b6 (7...e5 8.Nf3=) 8.ba6 Ra6?? (8...Na6 9.Qb3 Nc7 10.Ra8 (10.Qb6? Rb8 11.Qa5 Rb2-+) 10...Na8 11.e4+=) 9.Qb3 (better 9.Ra6 Na6 10.Qa4 Nd7 11.Qa6+-) 9...Ra1= 10.Ba1 Nc6 (10...e5 11.e3=) 11.e3 e5 12.Nf3 Be7 13.h3 Bf3 14.gf3 0-0 15.h4 (15.Bg2 Qc7 16.d3 Rd8=) 15...Nh5 (15...Qa8 16.Qb2=+) 16.Be2 Bh4? (16...Nf6 17.Rg1=) 17.Nd5 (17.f4 Nd4 18.ed4 Qa8 19.Rh4 Nf4+/-) 17...Qg5 (better 17...Nf6+=) 18.Qb6?? (18.Qa4 Ne7 19.Ne7 Qe7 20.c5 bc5 21.Qh4 Qh4 22.Rh4+/-) 18...Ne7?? (18...Rb8 19.Qc6 Qg2-/+) 19.Qd6 (better 19.Ne7 Qe7 20.f4+/-) 19...Nf5? (better 19...Ng6+/-) 20.Qe5+- Qg2 21.Rh4 (better 21.Qh2 Qh2 22.Rh2+-) 21...Nh4= 22.Qh5?? (better 22.d4=) 22...Qg1?? (better 22...Qh1 23.Bf1 Nf3 24.Qf3 Qf3 25.Ne7 Kh8-+) 23.Bf1+- Ng2 (23...Rb8 24.Ne7 Kf8 25.Qh7 Nf3 26.Ke2 Ke7 27.Qe4 Kf8 28.Qf3 Qg6+-) 24.Ke2 f5 (24...Ne3 25.fe3 f6 26.Qh3+-) 25.Qg5 (25.Ne7 Kh8 26.Ng6 Kg8 27.Nf8 Nf4 28.ef4 Kf8 29.Qf5 Ke7+-) 25...h6 (25...Nf4 26.Qf4 Kh8+-) 26.Qg7 1-0. ClayPigeons (2120) - blocnot_tetradi (1755), Rated Bullet game, lichess.org, 2020.

4.c4 e5!?=+.

4.Nf3 Bf3 5.ef3 g6 6.a4 (6.Bf6 ef6 7.Be2 Bg7=) 6...Bg7 7.c4 0-0 8.d4 Nbd7 9.Bd3 e5 10.0-0 ed4 11.Bd4 Nc5 12.Bc2 Nfd7 13.Bg7 Kg7 14.Nd2 Qf6 (14...f5 15.Re1=) 15.Ne4 Ne4 16.fe4 Rfe8 17.f3 Nc5 18.Qd2 Qb2 19.Rfb1 Qf6 20.Rd1 g5 21.Qd4 Re5 22.Rd2 Rae8 23.Rf1 h6 24.Qf2 (24.a5 R5e6=) 24...Kh7 (24...g4 25.Qd4=) 25.Qg3 Kh8 26.h4 (better 26.Rfd1!?=) 26...gh4-/+ 27.Qh3 (27.Qh2 R5e6-/+) 27...Rg5 28.f4 Rg3 29.Qh2 (29.e5 Rh3 30.ef6 Rc3-+) 29...Reg8 (29...Ne4 30.Be4 Re4 31.c5-+) 30.e5 de5 31.fe5? (31.Kh1-+) 31...Qe5 32.Qh4 (32.Bf5 Qe3 33.Rdf2-+) 32...Qe3 33.Rdf2 (33.Kh1 Qd2 34.Rg1 Rg2 35.Rd1-+) 33...Rg2 34.Kh1 R2g4 (34...Rf2 35.Rf2 Qe1 36.Kh2 Qg1 37.Kh3 Qh1 38.Rh2 Qf3 39.Qg3 Qg3) 35.Rf7?? (better 35.Qf6 R8g7 36.Qd8 Rg8 37.Qf6 R8g7 38.Qd8 Rg8 39.Qf6=) 35…Rh4 0-1. ClayPigeons (2120) - Chessplayer1702 (2150), Rated Bullet game, lichess.org, 2021.

(--> 1.b4 Nf6 2.Bb2 g6 3.b5 d6).

4.a4 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 d6).

4.c4 Bg7 5.e3 0-0 6.d4 c5 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 c5 7.b5).

4.e3 Bg7 5.Nf3 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 d6).

4.e3 Bg7 5.Nf3 0-0 6.c4 Bg4 7.Be2 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 Bg4 7.Be2 Nbd7 8.b5).

4.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.Nc3).

4.e4 (--> 1.b4 e5 2.Bb2 d6 3.e4 Nf6 4.Nc3).

4.e3 Nbd7 5.Qf3 Bc2 6.Qb7=.

4.e3 h6 5.Qf3 Qc8 6.e4 Bg4 7.Qg3 Nc6 8.Bb5 Bd7 9.a3 a6 10.Bc4 Be6 11.Be6+= Qe6 12.d3 g5 13.Nd5 Bg7?? 14.Nc7+- (14...Kd7 15.Ne6 fe6 16.Rb1+-) 1–0. market (2255) – larp808 (1970), GameColony.com, 2002.

4.Nf3 Nc6 5.b5 Nb4 6.d3 Bg4 7.e4 d5 8.a3 de4 9.de4 Qd6 10.ab4 Qb4 11.Qc1 Qc5 12.Be2 0-0-0 13.Qe3 Qe3 14.fe3 Kb8 15.Ng5 Be6 16.Ne6 fe6 17.e5 Nd5 18.Nd5 ed5 19.Rf1 e6 20.Bd4 b6 21.Kd2 Bb4 22.c3 Ba5 23.Rf7 g6 24.Bg4 Rde8 25.Rf6 c6 26.bc6 Kc7 1–0. Fritz 5.32 (2220) – Comet B25, 2002.

4.e3 Bg7 5.Be2 0-0 6.Nf3 Bg4 (6...a6 7.d4=) 7.h3 Bf3 8.Bf3 c6 (8...d5 9.a3=) 9.0-0 (9.h4 h5+=) 9...d5= 10.Rb1 b5 (10...Qd6 11.b5=) 11.a4+= a6 12.d3 Nbd7 13.e4 de4 14.Ne4 Rc8 (14...Ne4 15.Bg7 Kg7 16.Be4=) 15.ab5 ab5 1–0. pcmvr – tomy, net–chess.com, 2019.

4.e4 e5 (--> 1.b4 e5 2.Bb2 d6 3.e4 Nf6 4.Nc3 g6).

4.e4 Bg7 5.d3 0-0 6.h3 Nbd7 7.Nf3= a6 8.Nd5 Nd5=+ 9.Bg7 Kg7 10.ed5 Qe8 11.d4 Nf6=+ 12.Bd3 Nd5 13.a3 Nf4 14.0-0=+ Bd7 15.Re1 Qc8 16.Ng5 h6 17.Nf3 Nd3 18.Qd3 Bf5 19.Qc3 Qd7 20.Rad1 Rac8 21.d5 Kg8 22.Nh4 Rfe8 23.Rd2 c6=+ 24.Qe3 cd5 25.Rd5 Be6 26.Rd2 Kh7 27.Nf3 Bc4 28.Ne5 Qe6 29.Nc4 Qc4 30.Qf3 Rc7 31.Re4 Qc3?? 32.Qe2 Qc6 33.c4 e6 34.Qd3 Rd7 35.Rh4 d5 36.Qe3 h5 37.cd5 Rd5–/+ 38.Re2 Rd1 39.Kh2 Qd6 40.g3 Qd5 41.f3 Rd8 42.g4 Rd3 43.Qe4 Qe4 44.fe4 g5 45.Rh5–/+ Kg6 46.e5 Ra3 47.Rf2 Rg8 48.Rf6+= Kg7 49.Rg5 Kf8 50.Rg8 Kg8 51.Rf4 Re3–/+ 52.Rc4 Re5 53.Rc8 Kg7 54.Rc7 Rb5 55.Rc4 b6 56.Kg3 a5 57.ba5 ba5 58.Ra4 f6 59.Kh4 Kg6 60.Kg3 f5 61.gf5 ef5 62.h4 Kh5 63.Ra3 Kg6 64.Kf4?? Kf6 65.Kf3–/+ Kg6 66.Kg3 Kh5 67.Kh3? f4–+ 0–1. Steve20 – Skean Du, ChessWorld.net, 2006.

4.Ne4 Bg7 5.Nf6 Bf6 6.Bf6 ef6 7.Nf3 Bg4 8.Nd4 c5= 9.bc5 dc5 10.Nb3 Nd7 11.h3 Be6 12.e4 Rc8 13.c4 Ne5 14.d3 0-0 15.Be2 f5 16.ef5 Bf5–/+ 17.Nc1 Qd4 18.Rb1 Rfd8 19.Rb3 Rc7 20.0-0 Rcd7 21.g4 Be6–+ 22.Qc2 f5 23.g5 a6?? 24.Kh1? b5! 25.f4 bc4 26.dc4 Nc4 27.Rd3 Qe4 28.Kh2?? Bd5 29.Rf2?? Qh1 30.Kg3 Qg1 31.Kh4 Qf2 32.Rg3 Qf4 (32...Qf4 33.Rg4 Qf2 34.Rg3 h6 35.Qf5 hg5 36.Qg5 Qd4 37.Rg4 Rh7 38.Qh6 Rh6 39.Kg5 Rh5 40.Kg6 Bf7#) 0–1. mic (2120) – gbsrao (2120), net–chess.com, 2007.

4.a3 ab4 5.ab4 Ra1 6.Ba1 g6 (6...e5 7.e3=+) 7.e3 Bg7 8.Nf3 0-0 9.d4 Nc6 (9...d5 10.Nc3=) 10.Qb3 (better 10.b5 Nb8 11.Bd3+=) 10...Be6?? (10...e5 11.Be2=) 11.Be2?? (better 11.d5+-) 11...d5= 12.Nc3 (12.c5 Bf5=) 12...dc4 13.Bc4 Bg4 (13...Bc4 14.Qc4 Qd6 15.b5=) 14.0-0 (14.Ng5!? Qe8 15.Nb5+/-) 14...Bf3= 15.gf3 e6 16.Bb2 Ne7 (16...Qe7 17.Ba3 Ra8 18.Ra1 Nb4 19.Rb1=) 17.Ba3 (17.Ra1 Ned5=) 17...Ned5 18.b5 Re8 19.Ne4 Nb6 20.Bd3 Nfd5 21.Kh1 (21.Rc1 Qh4=) 21...Qh4 22.Rg1 (better 22.f4=) 22...f5-/+ 23.Ng3 f4 24.e4 fg3 25.fg3 Qh5 (better 25...Qf6 26.f4 Qd4 27.ed5 ed5-+) 26.ed5?? (better 26.g4 Qg5 27.ed5 Qd5 28.Qd5 ed5 29.Bc5=+) 26...Qf3-+ 27.Rg2 Bd4 (better 27...ed5 28.Qb1 Bd4-+) 28.Bc4? (better 28.de6 Nd5 29.e7-/+) 28...Nc4?? (better 28...Qe4 29.h3 ed5-+) 29.Qf3+- Ne3 (29...Na3 30.Qa3 ed5+-) 30.Re2 (30.de6 Nf5 31.g4 Re6+-) 30...Nf5 (30...e5 31.Re3 Be3 32.Qe3+-) 31.de6 Ra8 (31...c6 32.g4 Ng7 33.Qf7 Kh8 34.Bf8+-) 32.Kg2 (better 32.e7 Re8 33.g4 c5 34.gf5 b6+-) 32...h6 (32...Rd8 33.Qb7 Ne3 34.Re3 Be3 35.Qc7 Rf8 36.Bf8 Bd4 37.Bh6 Bf6 38.Qf7 Kh8 39.Qe8) 33.Qd5 Ra3 (33...c6 34.bc6 bc6 35.Qc6 Rb8+-) 34.e7 Kh7 35.e8Q Re3 (35...Rg3 36.hg3 Ne3 37.Re3 h5 38.Qdf7 Kh6 39.Qg6) 36.Qdf7 (36.Qdg8) 36...Ng7 37.Re3 (37.Qg6) 37...Be3 38.Qef8 (38.Qef8 c5 39.Q8g7; 38.Qg6) 1-0. ClayPigeons (2070) - imnotcarlsen (2035), Rated Bullet game, lichess.org, 2020.

4.Qa4 Bd7 5.b5 e5 6.e3 Be7 7.Nf3 0-0 8.Qc2 c6 9.a4 (9.Nc3 Qc7=) 9...c5 (9...cb5 10.ab5 Qc7 11.d4=) 10.Nc3 Be6 11.Be2 Qc7 12.0-0 Nbd7 13.Ng5 h6 14.Ne6 fe6 15.f4 ef4 16.Rf4 Ne5 (16...Rf7 17.Raf1 Raf8 18.Qg6+=) 17.Ne4 (17.Raf1 Rf7+/–) 17...Ne4 (17...d5 18.Nf6 Rf6 19.cd5 ed5 20.Qc3 Rf4 21.ef4+=) 18.Qe4+/– Bf6 (18...Qd7 19.Rf8 Rf8 20.Be5 de5 21.d3+/– (21.Qe5? Bf6 22.Qc5 Ba1–+)) 19.d4 cd4 20.ed4 Nf7 (20...d5 21.cd5 ed5 22.Qd5 Nf7 23.Qf5+-) 21.Qe6 (21.Rf6!? gf6 22.Qg6 Kh8 23.Qf6 Kg8 24.Qg6 Kh8 25.Qe6+-) 21...Rae8+/– 22.Qg4 d5 23.Rf6+- Re2? 24.Rf7 Rg2 25.Qg2 Rf7 26.Qd5 Qf4 27.Qg2 Qe3+/– 28.Kh1 Rf2 29.Qd5 Kh8= 30.Rg1 Qe2 31.Rg2 Qf1 32.Rg1 Qe2 33.Rg2 ½–½. Buczinski,Henryk – Krempa,Wojciech, Chorzow Poland, 1965.

4.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.c4) .

4.b5 b6 5.e3 e5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 b6).

4.b5 Nbd7 5.e3 e5 (---> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 Nbd7).

4.b5 e5 5.e3 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4).

4.e3 c5 5.b5 Nbd7 6.Nf3 g6 7.Be2 Bg7 8.d4 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Re8 13.Nbd2 (13.d5 Qc7+=) 13...Bb7 14.Bb2 Qc7 15.Qc2 Ra8 16.Bd3 e6 17.Qb3 d5 (17...cd4 18.ed4 (18.Bd4? e5–+) 18...d5 19.Rc1 dc4 20.Nc4+=) 18.Rc1= dc4 19.Bc4 (worse is 19.Nc4 Bf3 20.gf3 Nd5+=) 19...Bd5 20.Ne5 Qb7 21.Bd5 ed5 22.Nd7 Nd7 23.dc5 (better is 23.Bc3=) 23...Bb2?? (better is 23...Nc5 24.Rc5 bc5 25.Bg7 Kg7 26.Qc3 Kg8 27.Qc5 Ra1 28.Nf1 Rb1–+) 24.c6+- (24.Qb2?! bc5 25.Nf3 Ra4=) 24...Qc7 1–0. GuestVVXJ – pypete, freechess.org, 2017.

4.Nf3 Bb7 5.e3 e5 (---> 1.b4 e5 2.Bb2 d6 3.c4 b6 4.e3 Bb7 5.Nf3 Nf6).

4.Nf3 Nbd7 5.e3 h6 (5...e5 6.d4=) 6.Be2+= e6 (6...e5 7.0-0+=) 7.0-0 Bb7 (7...Be7 8.d4+=) 8.b5 (8.Nc3 Be7+=) 8...c5 (8...Be7 9.Nd4+=) 9.bc6 Bc6 10.a4 (10.Nc3 Be7=) 10...Be7= 11.a5 (11.Nc3 0-0=) 11...0-0 (11...ba5 12.Nd4 Bb7 13.Nb3=) 12.Nd4+= Ne5? (better is 12...Qc8+=) 13.f4+- (13.Nc6?! Nc6 14.Bf3 Rc8 15.Bc6 Rc6 16.ab6 ab6=) 13...Ng6? (13...Be4 14.fe5 de5+-) 14.Nc6 Qc7 (14...Qd7 15.Bf3 Rac8 16.ab6 Rc6 17.Bc6 Qc6 18.ba7+-) 15.Bf3 d5 16.Ne7 Ne7 17.Bf6 gf6 18.cd5 ed5 19.Nc3 Rad8 (19...Rfd8 20.Qb3+-) 20.ab6 ab6 (20...Qb6 21.Qa4+-) 21.Qb3 Qb7 (21...Rfe8 22.Rfb1+-) 22.Rfb1 (22.Ra5 Qc7 23.Ra6 d4+-) 22...Rd6 23.Nb5 (better is 23.Ra5+-) 23...Rdd8 (23...Rd7+-) 24.Ra7 Qc6 25.Re7 Rde8 (25...Rd7 26.Nd4 Qc7 27.Rd7 Qd7 28.Qb6 Kg7+-) 26.Rc7 Qa8 27.Bd5 Qb8 28.Qc2 (better is 28.Bf7 Kh8 29.Qc2 Qc7 30.Qc7+-) 28...Rc8 29.Qg6 Kh8 30.Qf6 Kg8 31.Bf7 Rf7 32.Qf7 Kh8 33.Qg7 1–0. michaelbuss (2810) – Verner201098, ChessWorld.net, 2014.

4.Qa4 Bd7 5.b5 b6 (5...e5 6.g3=+) 6.Bf6 ef6 7.Nf3 a5 (7...a6 8.Nc3=) 8.Qc2 (better 8.Nc3+=) 8...a4?? (8...Be6 9.g3=) 9.Na3 (9.Qe4 Be6 10.Qa8 Bc4+-) 9...h6?? (better 9...f5+=) 10.Qe4+- Be7 11.Qa8 Nc6 12.Qd8 (12.bc6?! Qa8 13.cd7 Kd7+-; 12.Qa4 Ne5+-) 12...Bd8 (12...Nd8 13.Nb1 Be6 14.Nc3+-) 13.bc6 Bc6 14.e3 Bf3 (14...Kd7 15.Nb5+-) 15.Nb5 (better 15.gf3 g6+-) 15...Bc6 16.Nd6 Kd7 (16...Ke7 17.Nf5 Kf8 18.d4+-) 17.Nf7 Rf8 18.Nd8 Rd8 19.0-0-0 Kc7 (19...Rc8 20.a3+-) 20.d4 cd4 21.Bd3 (better 21.ed4!? Kd6+-) 21...Bg2 (21...de3 22.fe3 Re8 23.Rhe1+-) 22.Rhg1 Bf3 23.Rg7 Kc8 (23...Kc6 24.Re1 f5 25.Bf5+-) 24.Bf5 Kb8 25.Rd4 Rd4 26.ed4 a3 (26...Be2+-) 27.d5 h5 28.d6 (28.d6 Bc6 29.Rg8 Kb7 30.Be4 Be4 31.d7 Ka7 32.d8Q Kb7 33.Qc8 Ka7 34.Rg7 Bb7 35.Qb7) 1–0. MARYMARY – Bruce2654, ChessWorld.net, 2019.

4.b5 b6 5.e3 (5.Nf3 e5=) 5...Bb7 6.Nf3 Nbd7 (6...e6 7.d4=) 7.Be2 e6 8.0-0 Be7 9.Nc3 0-0 10.a4 (10.d4 cd4 11.Nd4 a6=) 10...Qc7 11.Qb3 a5 12.ba6 Ra6 13.Nb5 Qc6 14.Rfc1 (14.Rfb1 Rfa8=) 14...Ne4 (14...Rfa8 15.d4=) 15.Qd1 (15.d3 Nd2 16.Qc3 Bf6 17.Qd2 Rfa8+-) 15...Ng5 (15...Bf6 16.Bf6 Ndf6 17.d3=) 16.d4= Raa8 (16...cd4 17.Nbd4 Qc5 18.Ba3=) 17.d5 ed5 18.Ng5 Bg5 19.cd5 Qd5 20.Qd5 Bd5 21.Nc7 Bc6 (21...Bf6 A) 22.Nd5? Bb2 23.Bb5 Ba1 24.Ra1 Rfd8–+; B) < 22.Na8 Bb2 (< 22...Ra8 23.Bf6 Nf6 24.Rab1+=) 23.Nc7 Bb7–/+ (< 23...Bc1 24.Nd5 Bb2 25.Rb1+=); C) 22.Bf6 Nf6 23.Nd5 Nd5 24.Bf3+=) 22.Na8+/– d5?? (22...Ra8 23.Bb5 Rc8 24.Bc6 Rc6 25.Rc4+=) 23.Bd3 Bb7?? 24.Rc3 Bd8?? 25.e4 g6? 26.f4?? Kg7?? 27.Kf1 Kh8?? 28.Kf2 f5? 29.Raa3 de4 30.Nb6 Nb6 31.Rab3?? c4?? 32.Kg1?? (32...cb3 33.Rb3 Kg8 34.Bb5–+; better is 32.Bc4 Na4 33.Rb7 Nc3 34.Bc3 Bf6 35.Rb8 Bc3 36.Rf8 Kg7 37.Rf7 Kh6 38.g4 Bd4 39.Ke2 fg4 40.Rd7+-). Brenner,Sabine – Oberlaender,Olga, GER–chJW U20 qual2, 1995.

4.b5 e5 5.Nc3=+.

4.b5 e5 5.Nf3=.

4.b5 Be6 5.d3 Bd7 6.Nf3 e5 7.g3 g6 8.Bg2 h5? (better is 8...a6=) 9.Ne5!+- de5 (better is 9...Bc8 10.Nf3 Bg7+-) 10.Bb7 (10...Na6 11.ba6+-) 1–0. Wall,Bill – Felisto, Internet, 2003.

4.bc5 dc5 5.Nf3 Nc6=.

4.a4 g6 5.b5 Bg7 6.h3 a5 7.Nc3 0-0 8.Rb1 Ra7 9.e3 Bf5 10.Nf3 (better is 10.d3=) 10...Bb1–/+ 11.Qb1 Nbd7 12.h4 Nc5 13.h5 Nh5 14.Rh5 (14.d4 Ne6–/+) 14...gh5 (14...Bc3 15.Bc3 gh5 16.Qf5–+) 15.Ng5 (15.d4 Ne6–+) 15...f5 16.e4? (16.d4 h6 17.Nh3 Nd7–+) 16...e5 (better is 16...Bc3!? 17.dc3 e5 18.Bc1–+) 17.Nh3 f4 18.bc6 bc6 19.Ba3 Qb8 20.Qa2 Qb3 (better is 20...Qb6–+) 21.Qb3 Nb3 22.Bd6 Rd8 23.c5 Bf8?? 24.Bc4+- Kg7 25.Bb3?? Bd6–/+ 26.cd6 Rd6 27.Ng5 Rg6 28.Ne6 Kf6 29.g3? fg3–+ 30.fg3 Rg3 31.Ne2?? Rb3 32.Nc5 Rb4 33.Ng3 h4 34.Nh1 Rg7 35.Nf2 h5 36.Nfd3 h3 37.Nb4 h2 38.Nc6 Rg1 39.Kf2 h1Q 40.Nd7 Kg7 41.Nde5 Re1 42.d3 Qf1 43.Kg3 Re3 44.Kh4 Rh3 45.Kg5 Rg3 46.Kh5 Qh3# 0–1. aleksandras19 – kar86ban, kurnik, 2012.

4.d4 Bf5 5.e3 e6 6.Bd3 Bg6 7.Nf3 Nbd7 8.0-0 Bh5 9.Nbd2 Be7 10.Qb3 0-0 11.e4 Rc8 12.Rfc1 Bg6 13.d5 e5 14.dc6 bc6 15.a3 Nh5 16.c5 Nf4 17.cd6 Bd6 18.g3 Nd3 19.Qd3 Qe7 20.Nc4 Now all is on e5 20...Bb8 21.Na5 c5 22.Bc3 Rfd8 23.Qe3 Nb6 24.Nh4 Rd4?? 25.Ng6 hg6 26.Bd4 cd4 27.Rc8 Nc8 28.Qd3 Nd6 29.Nc6 Qb7 30.Nb8 Qb8 31.f3 Qc7 32.Kg2 Kh7 33.h4 f5 34.ef5 gf5 35.Re1 Nf7? 36.Qf5+- Kg8 37.f4 Qc3 38.Re5 Ne5 39.Qe5 Qd2 40.Kh3 d3 41.Qe8 Kh7 42.Qh5 Kg8 43.Qe8 Kh7 44.Qh5 Kg8 45.Qe8 ½–½. ludice (1770) – izarobiza, kurnik, 2011.

4.e3 a5 5.b5 cb5 6.cb5 b6 (6...e5 7.d4 Nbd7 8.Nd2=) 7.a4 (7.Bf6 gf6 8.Nc3 Bb7+=) 7...Bb7 (7...e5 8.d4 e4 9.d5=) 8.Nf3 Nbd7 9.d4 g6 (9...Rc8 10.Be2=) 10.Be2 Bg7 11.0-0 0-0 12.Nbd2 Rc8 13.Rc1 Ne4 (13...Rc1 14.Qc1 Qa8 15.Qa1=) 14.Ne4+= Be4 15.Qb3 Nf6 16.Rc8 Qc8 17.Rc1 Qd7 18.h3 (18.Nd2 Bb7+=) 18...Bd5 (18...Rc8 19.Nd2=) 19.Qc2+= Be6 20.Qc7 (better 20.Nd2+=) 20...Rc8? (20...Qc7 21.Rc7 Rc8 A) worse 22.Re7 Rc2 23.d5 A1) 23...Re2? 24.Bf6 (24.de6?! Rb2 25.Rf7 Rb1 26.Kh2 Rb4=) 24...Bf6 25.Re8 Kg7 26.de6 fe6 27.Re6+-; A2) 23...Rb2?! 24.de6 Re2 25.Rf7=; A3) 23...Bd5 24.Bf6 Bf6 (24...Re2 25.Re8 Bf8 26.Be7+-) 25.Re8 Kg7=+; B) 22.Rc8 Bc8 23.Bd3+=) 21.Qd7?? (better 21.Qb6 Ra8 22.Qc7+-) 21...Bd7 22.Rc8 Bc8 23.Nd2 Bb7 24.Nc4 Nd7 25.f3 Bd5 (25...f6 26.g3=) 26.e4+= Bc4 27.Bc4 e6 (27...e5 28.d5+=) 28.Bd3 (28.g3 Nf6+=) 28...Kf8 29.Kf2 Ke7 30.Ke3 d5 31.Ba3 Kd8 32.e5 Ke8 33.g4 Bf8 34.Bb2 Bb4 35.f4 Ke7 36.f5 (36.g5 Ke8+/-) 36...ef5 37.gf5 f6 38.fg6 hg6 39.Bg6 fe5 40.de5 Ke6 41.Kf4 Bd2 42.Kg4 (42.Kf3 Ne5 43.Ke2 Ng6 44.Kd2 Nf8+=) 42...Ne5= 43.Kh5 (better 43.Be5!? Ke5 44.h4=) 43...Ng6-/+ 44.Kg6 Be3 45.h4 (45.Kh5 Kf5-+) 45...d4 46.h5 d3 47.Bc3 d2 (47...d2 48.Bd2 Bd2-+) 0-1. Mettigel (2210) - hubble (2110), Rated Bullet game, lichess.org, 2014.

4.e3 e5 5.d4=.

4.e3 g6 5.Nf3 Bg7 6.d4 0-0 7.Be2 a5 8.b5 cb5 9.cb5 b6 10.a4 Nbd7 11.Nbd2 Bb7 12.0-0 Rc8 13.Rc1 Ne4 14.Nc4 Bd5 15.Ncd2 Nd2 16.Nd2 Nf6 17.Bf3 Bf3 18.Qf3 d5 19.Ba3 Re8 20.Rc8 Qc8 21.Rc1 Qd7 22.Qf4 Nh5 23.Qc7 Qg4? 24.Nf3 Qf4?? 25.ef4 1–0. brother – profesor56, kurnik, 2012.

4.b5 Na5 5.Qa4 b6 6.Nf3 Nd7 (6...a6 7.e3=) 7.e4 Nc5 8.Qd1 (8.Qc2 e5+=) 8...Bg4 (8...Ne4 9.Qe2 Bb7 10.Nc3 Nc3 11.Bc3=+) 9.Be2 (9.h3 Bh5+=) 9...Ne4= 10.d4 (10.d3 Nf6=) 10...h5 (10...a6 11.Qc2 Nf6 12.d5=+) 11.d5 Nc5 12.0-0 e5 (12...Bf3 13.Bf3 Nc4 14.Bd4=) 13.Re1 (13.de6 Be6 14.Re1 Kd7=) 13...f6 (13...Bf3 14.Bf3 Nc4 15.Bd4=+) 14.Nbd2 f5 (14...Qd7 15.Bc3=) 15.Ne5 (15.Qc2!?+=) 15...de5= 16.Be5 Nd3?? (better 16...Kd7=+) 17.Bg4 Ne1 (17...hg4?? 18.Bc7 Ne1 19.Bd8 Kd8 20.Qe1+-) 18.Qe1 Qe7 (better 18...Be7 19.Bf5 Kf8+-) 19.Bh5?? (19.Bf5!? Kd8+-) 19...Kd8?? (19...Rh5 20.Qe2 g6 21.Re1–+) 20.Bc7?? (better 20.Bg6+-) 20...Kc7–+ 21.d6? (better 21.Qe7 Be7 22.Be2–+) 21...Qd6 22.c5 bc5 (22...Qc5?! 23.Rc1 Bd6 24.Rc5 bc5 25.Nf3+=) 23.Rd1 Rh5 24.Nc4 (24.Nf1 Qh6 25.Qa5 Qb6 26.Qc3–+) 24...Qh6 (better 24...Qh2 25.Kf1 Qh1 26.Ke2 Qe1 27.Re1 Nc4–+) 25.Qe5 (25.Qa5 Qb6 26.Nb6 Bd6 27.Na8 Kd7 28.Qc7 Ke6 29.Rd6 Ke5 30.Qc5 Kf4 31.Qe3 Kg4 32.Qg3) 25...Kb7 (25...Bd6 26.Rd6 Qe6 27.Qc5 Kb7 28.Na5 Kb8 29.Rd8 Qc8 30.Rc8) 26.Qd5 (26.Rd7 Kc8 27.Qc7) 26...Nc6 27.Qd7 Kb8 28.Qe8 Kb7 (28...Nd8 29.Qd8 Kb7 30.Rd7) 29.Rd7 1–0. MARYMARY – misterh, ChessWorld.net, 2018.

4.b5 Na5 5.e3 b6 (5...a6 6.Nf3=) 6.Nf3 (6.Be2 e5=) 6...e5 7.d3 g6 (7...a6 8.Be2=) 8.Be2+= Bg7 9.0-0 0-0 10.Nbd2 Nb7 (10...a6 11.d4+=) 11.Nb3 (11.d4 ed4 12.Nd4 a6+=) 11...Nc5 (11...a6 12.Qc2+=) 12.Nc5 bc5 13.d4 (13.Nd2 a6+=) 13...e4 (13...cd4 14.ed4 e4 15.Nd2=) 14.Nd2 Bb7 (14...cd4 15.Bd4 Qe7 16.Rc1+=) 15.dc5 dc5 16.Nb3 (16.Qc2 Qe7+/–) 16...Qe7 17.Na5 (17.Qc2 c6+=) 17...Bc8 (17...c6 18.a4+=) 18.Nc6 Qe6 19.Be5 (better is 19.Qc2!?+/–) 19...Bd7= 20.Bc7 (20.f4 ef3 (< 20...Bc6 21.bc6 Qc6 22.Qc2=) 21.Bf3 Bc6 22.Bf6 Bf6 23.Bc6 A) < 23...Ba1 24.Ba8 (< 24.Qa1 Qe3 25.Kh1 Rad8–+) 24...Ra8 25.Qa1=+; B) 23...Rad8–/+) 20...Bc6=+ 21.bc6 Qc6 22.Qd6= Qd6 23.Bd6+= Rfc8 24.Rab1 Ne8 25.Bg3 f5 26.Rfd1 Nf6 27.Be5 Re8 28.Bf6 Bf6= 29.Rb7 Re7 30.Rb5 Rc7 31.Rdb1 Kf8 32.a4 a6 33.Rb8 Rc8 34.Rc8 Rc8 35.Rb6 Bc3 36.Ra6 Rd8 37.Ra7 Rd2 38.Bf1 h5 39.a5 Ke8 40.a6= Rd7?? 41.Rd7+- (41...Kd7 42.a7+-) 1–0. Skaug,Thorbjorn – Loken,Per, Klubbmesterskap, 2003.

4.b5 Ne5 5.d3=+.

4.b5 Ne5 5.e3 a6 6.d4 Neg4 7.h3 Nh6 8.Bd3 ab5 9.cb5 b6 10.Nf3 e6 11.0-0 Be7 12.Nc3 0-0 13.Qc2 g6 14.Ng5 (14.e4 Bb7+/–) 14...Nd5 15.Nd5 ed5 16.Nf3 Bf5 17.Bf5 Nf5 18.Rfc1 Rc8 19.Qc6 Bh4 20.Qd5 Ne7 21.Qb3 Qd7?? (better is 21...Bf6+-) 22.Nh4 (22...Qe6 23.Qe6 fe6 24.Nf3+-) 1–0. Wall,Bill – Woodpusher, Microsoft Gaming Zone, 2004.

4.b5 Ne5 5.e3 Ned7 6.d4=.

4.b5 Ne5 5.e3 Be6 6.Na3 Bg4 (6...Bf5 7.d4 Ng6 8.Ne2=) 7.f3 Bf5 8.d4 Ng6 9.g4 Bd7 10.h4 h5 (10...e6 11.h5 Ne7 12.Bd3=) 11.g5+= Nh7 (11...Ng8 12.Bd3 e6 13.Bg6 fg6 14.Ne2+=) 12.Bd3 c5 13.bc6 Qa5 14.Kf2 (14.Ke2 bc6 15.Qc2 Kd8+=) 14...bc6+= 15.Ne2 Rb8 16.Qc2 Nh4 (16...e5!?+=) 17.Rh4+/– Ng5 18.f4 Nh3 (18...Ne6 19.Rb1+-) 19.Kg2 g5 20.Rh3 gf4 21.ef4 Rg8? (21...Bh3 22.Kh3 Bg7+-) 22.Rg3 Rg3 23.Kg3 h4 (23...d5 24.c5+-) 24.Kh4 Bg7 (24...e5 25.Rb1 ef4 26.d5 (26.Nf4 Be7 27.Kg3 Qg5 28.Kf3 Qg4 29.Ke3 Qg3 30.Kd2 Qf4 31.Kc3 c5–+) 26...Be7 27.Kh5 cd5 28.Qc3 Qc3 29.Nc3 dc4 30.Nc4+-) 25.Rh1 (25.Rg1 Bf6 26.Kg3 c5+-) 25...Bf6 26.Kg3 c5 27.Nb5 Bb5 (27...Kd8 28.dc5 Bc6 29.Rd1+-) 28.cb5 Kd7 (28...Rd8 29.dc5 Bb2 30.Qb2 dc5 31.Bc4+-) 29.dc5 Bb2 30.c6 Kc7 31.Qb2 a6 (31...Qb6 32.Qd4+-) 32.Nc3 e6 33.Rh7 Rg8 (33...Rf8 34.ba6 Kc6 35.Qb7 Kc5 36.Qa7 Kc6 37.Bb5 Qb5 38.Nb5 Kb5 39.Qb7 Ka4 40.Qc6 Ka5 41.a4+-) 34.Kf3 ab5 (34...Rf8 35.ba6 Qb6 36.Nb5 Kc6 37.Nd4 Kc7 38.Ne6 Kc6 39.Qc3 Qc5 40.Nc5 Kc7 41.Qa5 Kc8 42.Bf5 Kb8 43.Qb6 Ka8 44.Qb7) 35.Rf7 Kb8 36.Nb5 Qb6 37.c7 Ka8 38.Qa3 Kb7 39.c8Q! (39.c8Q Kc8 40.Qa8 Qb8 41.Nd6 Kd8 42.Qb8) 1–0. GuestRMKW – GuestTZVL, freechess.org, 2017.

4.Qb3 c6 5.e3 Qc7 (5...e5 6.d4=+) 6.Nf3 e5 7.d4 Be7 8.de5 de5 9.Nc3 0-0 10.Rc1 (10.Rd1 a5 11.b5 e4=+) 10...a5 11.a3 (11.b5 Nc5 12.Qc2 Bg4=+) 11...Re8 (11...ab4 12.ab4 Qb6 13.b5=+) 12.Be2 (12.c5 ab4 13.ab4 b5=) 12...Nf8 (12...ab4 13.ab4 Qb6 14.b5=+) 13.0-0= Ne6 (13...e4 14.Nd4=) 14.Rfe1 (14.c5 ab4 15.ab4 Nf8=) 14...h6 (14...ab4 15.ab4 b6 16.Bd3=) 15.Red1 b6 (15...ab4 16.ab4 Qb6=) 16.Rd2 (16.Nd5 cd5 17.cd5 Qa7 18.Rc8 Rec8 19.de6 e4 20.ef7 Kh8+-) 16...Bb7 (16...e4 17.Ne1=+) 17.Rcd1 (17.Nd5 cd5 18.cd5 Bd5 19.Rd5 Qa7 20.Re5 ab4 21.ab4 Qa2+/-) 17...Rad8 (17...e4 18.Nd4 Bd6 19.Ne6 Re6 20.ba5 ba5 21.h3=) 18.b5 (18.Na4!? Rd2 19.Rd2+=) 18...Nc5 (18...Rd2 19.Nd2 Rd8 20.Qc2=) 19.Qc2 g6 (better 19...Rd2!? 20.Rd2 Bd6=) 20.bc6+/- Bc6 (20...Qc6 21.Nd5 Nd5 22.cd5+/-) 21.Nb5 Bb5 22.cb5 (22.Be5 Rd2 23.Qd2+/- (23.Bc7?? Rc2 24.Nd4 Bc4 25.Nc2 Be2-+)) 22...Kg7? (better 22...Rd2 23.Rd2 Bd6+=) 23.Be5+- Rd2 24.Rd2 (24.Bc7?? Rc2 25.Nd4 Ra2 26.Bb6 a4-+; 24.Qd2?! Qc8+-) 24...Qc8 25.Qb2 (25.Bc4 Rd8+-) 25...Qe6 26.Rc2 Kh7 27.Bc4 Qg4?? (better 27...Rd8 28.Qb1 Qf5+-) 28.Bf6 Rd8 (28...Na4 29.Qe5 Qd7 30.Rd2+-) 29.h3 (better 29.Be7 Rd1 30.Bf1+-) 29...Rd1 30.Kh2 Bd6 31.Be5 Be5 (31...Qd7 32.Bd6 Qd6 33.g3+-) 32.Qe5 (32.Ne5 Qe4 33.Ng4 Qf5+-) 32...Qd7 33.Bf7! Qf7 34.Rc5 (better 34.Nd4+-) 34...Rd7?? (better 34...bc5 35.Qc5 Qb7+-) 35.Rc6 Re7 36.Qg3 g5 (36...Qe8 37.Nh4 Rb7 38.Rc7 Rc7 39.Qc7 Kg8 40.Qb6+-) 37.Ng5! hg5 38.Qg5 Qg7 (38...Re6 39.Qh4 Kg7 40.Qg4 Rg6 41.Rg6 Qg6 42.Kg3 Qg4 43.Kg4+-) 39.Qh5 Kg8 (39...Kg8 40.Rc8 Qf8 41.Qg6 Rg7 42.Rf8 Kf8 43.Qb6 Rd7+-). ClayPigeons (2140) - MetallaroUrlante (2105), Rated Bullet game, lichess.org, 2020.

4.Qb3 e5 5.Nf3=+.

4.Qc2 e5 5.e4 (5.Nf3 a5 6.a3 c6=) 5...c6 (5...a5!? 6.b5 g6+=) 6.Nc3= Be7 7.b5 (7.Nf3 0-0=) 7...Qc7 (7...Nc5 8.Nf3+=) 8.Nf3= 0-0 9.d4 (9.Be2=) 9...b6 (9...ed4 10.Nd4 Nh5 11.g3=) 10.Qd3 (better is 10.bc6!? Qc6 11.Bd3 ed4 12.Nd5+=) 10...ed4+= 11.Nd4 Ne5 12.Qd1 (12.Qc2 cb5 13.cb5 Bb7+=) 12...Bb7 (better is 12...d5!? 13.cd5 cd5–/+) 13.f4+= Ned7 (13...Ng6 14.bc6 Bc6 15.Qf3=) 14.Nc6 Bc6 15.bc6 Qc6 16.Bd3 (16.Qf3 Rac8+=) 16...Rfe8 17.Qe2 (17.0-0 Nc5+=) 17...Nc5 e4 seems the pivot of the position 18.0-0-0 (18.0-0 Nd3 19.Qd3 Rac8–/+) 18...Nd3–/+ 19.Qd3 Bf8 20.Rhe1 Ng4 (20...Rac8!?+=) 21.Qf3 Nf6 (21...Qc8 22.h3 Nf6 23.Kb1=) 22.e5+= Qf3 23.gf3 Nd7 (23...Nh5 24.Nb5 Rad8 25.Nc7+=) 24.Ne4 Rac8 25.Nd6 (25.ed6 f5 26.Ng3 Re1 27.Re1 Rc4 (27...Bd6?! 28.Nf5 Rc4 29.Kb1=) 28.Kd2 Bd6 29.Nf5 Bb4 (29...Bf4?! 30.Kd3 Rc7 31.Re8 Kf7 32.Re7 Kg6 33.Rg7 Kf5 34.Rf7 Kg5 35.h4 Kh4 36.Rf4 Kg5 37.Ke3+=) 30.Kd3 Rf4–+ (30...Be1?! 31.Kc4 Bd2 32.Be5=)) 25...Bd6 26.Rd6 (26.ed6 Rc4 27.Kb1 Re1 28.Re1 Rc8+= (28...Rf4 29.Re8 Nf8 30.d7 f6 31.d8Q Kf7 32.Re7 Kg6 33.Qf8 Kh5 34.Rg7 Rf3 35.Qf7 Kh4 36.Bf6 Rf6 37.Qf6 Kh5 38.Qg5)) 26...Rc4= 27.Kd2 Nc5 28.Rd4 Rd4 29.Bd4 Rd8 30.Ke3 Ne6 31.Bb2 g6 32.Rg1 Ng7 (32...Kf8 33.Rc1=) 33.a4 (33.Rc1 Ne6=) 33...Nf5+= 34.Ke2 Kf8 35.Rc1 Ke7 36.Rc7 Rd7 37.Rd7 (37.Rc8!?=) 37...Kd7–/+ 38.Kd3 Kc6 39.Ke4 (better is 39.Bc3–/+) 39...Kd7 (better is 39...a5–/+) 40.Bc3 (40.Kd3 a5–/+) 40...Ne7+= ½–½. kewois (1780) – element60 (1735), gameknot.com, 2013.

4.Qc2 g6 5.e3 Bg7 6.Nf3 0-0 7.Be2 e5 8.d3 Qe7 9.h3 (9.Nc3 a5 10.b5 Nc5=) 9...c6 (9...a5 10.b5=) 10.0-0 Nh5 11.g4 (11.d4 Nhf6+=) 11...Nhf6 12.Nbd2 a6 13.Rfe1 b5 (13...h6 14.c5=) 14.a4 (14.g5 Ne8=) 14...Bb7 (14...bc4 15.dc4 Rb8 16.b5=) 15.ab5 cb5 16.e4 h6 17.Qb3 (17.Bc3 Rfc8=) 17...Nh7 (17...bc4 18.Nc4 Rab8 19.Qa4=) 18.cb5 ab5 19.Ra8 Ra8 20.Rc1 (20.d4 Ba6+=) 20...Nb6 (20...Nhf6 21.Rc2+=) 21.h4 (21.d4!?=) 21...Na4 22.Ba1 Qd7 23.Nh2 Nf8 (23...d5–/+) 24.f3 (better is 24.g5!?+=) 24...Ne6–+ 25.Qc2 Rc8 26.Qd1 Nf4 27.Rc8 Qc8 28.Bf1 Nc3 (28...d5–+) 29.Bc3? (better is 29.Qe1–/+) 29...Qc3–+ 30.Be2 (30.Nb3 Qb4 31.Qc2 Bf6–+) 30...Qb4 31.Nhf1 (31.g5 Qd4 32.Kf1 Bc8–+) 31...d5 (better is 31...Qd4 32.Kh1 Qf2–+) 32.Ne3 Qd4 33.Ndf1 de4 (33...b4!? 34.Kh2–+) 34.de4 Qb6 (34...Bc6 35.Qc2 Bd7 36.Kh1–+) 35.Qd7?? (35.Kh2–+) 35...Ne2 (35...Ne2 36.Kh2 Nd4–+) 0–1. GuestSKPV – GuestJVST, freechess.org, 2017.

4.d3 e5 5.Nd2 g6 (5...Be7 6.a3=+) 6.Ngf3= Bg7 7.g3 0-0 8.Bg2 c6 9.0-0 Re8 10.Qb3 Qe7 11.e4 Nf8 12.Rfe1 Bg4 13.d4 Bf3 14.Nf3 Nh5 15.d5 cd5 16.cd5 Rac8 17.Rac1 Nd7 18.a4 Bh6 19.Rc8 Rc8 20.a5 a6 21.Bf1 f5 (21...Ng7 22.Bh3+=) 22.ef5+/- gf5 23.Nd4 Ng7 24.f4! e4 (24...ef4 25.Re7 Pinning (25.Re7 Deflection)) 25.Bh3+- Re8 (better 25...Qf8+-) 26.Nf5 Nf5 27.Bf5 Bg7 (27...Nf6 28.Be6 Kf8 29.g4+-) 28.Be6 (better 28.Re4 Qd8 29.Re8 Qe8 30.Be6 Kh8 31.Bg7 Kg7 32.Qc3 Nf6+-) 28...Kh8 29.Re4 Nf6 30.Bf6 (30.Re2 Rf8+-) 30...Qf6 31.Qc2 h5 (31...Qa1 32.Kg2 Bd4 33.Qc7 Qg1 34.Kh3 Qf1 35.Kg4 Qd1 36.Kg5+-) 32.Qe2 Qh6 (32...Qa1 33.Kg2 Qb2 34.Qb2 Bb2 35.h3+-) 33.Bf5 Rf8 34.Re6 Bf6 Black prepares h4 35.Kg2 Kg7 (35...h4 36.Re8 (worse 36.Rd6 h3 37.Bh3 Qg6+-) 36...h3 37.Bh3+-) 36.Rd6 Rf7 37.Qe6 h4 (37...Qh8+-) 38.Rd7 Rd7 39.Qd7 Kh8 40.Be6 (better 40.Qc8 Kg7 41.Qb7 Kf8 42.Qa6+-) 40...Qg7 (40...Qf8+-) 41.Qe8 Kh7 42.Qh5 (better 42.Bf5 Kh6 43.g4 Qg4 44.Bg4 h3 45.Kh3 Kg7 46.Bh5 Bc3 47.Qf7 Kh8 48.Bg6 Bg7 49.Qe8 Bf8 50.Qf8) 42...Qh6 43.Bf5 Kg7 44.Qg4 Kf8 45.Be6 (45.Bd3!? Bd8 46.Qd7 Be7 47.Qb7 Qf6+-) 45...h3 (45...Qg7 46.Qf5 (worse 46.gh4 Qg4 47.Bg4 Bh4+-) 46...hg3 47.hg3+-) 46.Kf3 Ke7 (46...Bg7+-) 47.Qg8 Qf8 (47...Qg7 48.Qb8 Bb2 49.Qb7 Kd8 50.Qc8 Ke7 51.Qd7 Kf6+-) 48.Qf8 (better 48.d6 Kd6 49.Qf8 Ke6 50.Qc8 Kd6 51.Qb7+-) 48...Kf8 49.d6 (better 49.Bh3 Bc3 50.Bc8+-) 49...Be7 (49...Bc3 50.b5+-) 50.Bd5 (better 50.de7 Ke7 51.Bd5+-) 50...Bd6 51.Bb7 Bb4 52.Ba6 Ba5 53.Kg4 Bc7 54.Kh3 Bf4 (54...Kg7+-) 55.gf4 Kg7 56.Kg4 Kf8 57.h4 Kg7 58.Bb5 Kh8 59.Bc4 Kh7 60.Bd3 Kh8 61.Kg5 (61.Kg5 Kg7 62.h5 Kf7 63.f5 Kf8 64.h6 Ke7 65.f6 Kd6 66.h7 Kd5 67.h8Q Kc5 68.f7 Kb4 69.f8Q Kb3 70.Qb8 Ka4 71.Qa1) 1-0. opperwezen (2760) - gameoverbro (2265), Elite Bullet Arena, lichess.org, 2017.

4.d4 a5 5.b5 e5 6.Nf3 ed4 7.Bd4 g6 8.Nc3 Bg7 9.g3 0-0 10.Bg2 Nc5 11.0-0 Ne6 12.e3 Nd4 13.Nd4 Rb8 14.Rc1 Nd7 15.Nd5 Nc5 16.Qd2 a4 17.Qa5 b6 18.Qa7 Bb7 19.Nc6 Bc6 20.bc6 Rc8 21.Rfd1 h5 22.h4 Re8 23.Rd2 Be5 24.Rcd1 Kg7? (better is 24...f5) 25.Bh3 f5 (better is 25...Ne6 26.Be6 Re6) 26.Nb6 Rb8 27.Nd5 Ne6 28.e4 fe4 29.Be6 Re6 30.Nc7 Re7 31.Ne6 1–0. Wall,Bill – BKZG, FICS, 2012.

4.d4 e6 5.e3 Be7 6.Nf3 b6 7.Bd3 Bb7 8.0-0 Be4 9.Qc2 Bd3 10.Qd3 d5 11.c5 c6 12.a4 a5 13.b5 cb5 14.c6+= Nb8 15.ab5 0-0 16.Rc1 Qc7 17.Nbd2 Rc8 18.h3 Bd6 19.g4 Qe7 20.Ra4 Ra7 21.Ne5 Rac7 22.Rca1 Ne8 23.f4 Qh4 24.Kg2 Qd8 25.e4 f6 26.ed5 Bb4 27.de6 fe5=+ 28.fe5 Qd5 29.Kg3? Re7?? 30.Nc4?? Qb5–+ 31.Rb4 ab4 32.Qb3 Qc6 (32...Qc6 33.Ne3 Qe6 (33...Re6 34.d5 Qb5 35.de6+/–) 34.Qe6 Re6–+) 0–1. Skrzypczak,Michal (2100) – Oleksy,Krzysztof (2085), Poland–chT2, 2004.

4.d4 g6 5.Nf3 Bg7 6.Nbd2 0-0 7.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 Nbd7 7.Nbd2).

4.e3 c5 5.b5 e6 6.d4 b6 7.Nc3 Bb7 8.Nf3 Rc8 (8...cd4 9.Qd4 Bf3 10.gf3=) 9.Be2 (9.d5 Be7+=) 9...Be7 (9...cd4!? 10.Qd4 Qc7=+) 10.d5+= e5 11.e4 0-0 12.0-0 g6 (12...Ra8 13.Qd3+=) 13.Ne1 Ne8 14.Nd3 f5 15.f4 Bf6 16.ef5 (16.Qa4!?+/-) 16...gf5+= 17.fe5 Ne5 (better 17...de5 18.Nf2 Nd6+=) 18.Rf5?? (18.Qa4 Rc7+/-) 18...Ng7?? (18...Nc4 19.Bg4 Nb2 20.Nb2 Bc3 21.Rf8 Kf8 22.Bc8 Bc8 23.Rb1-+) 19.Rf1?? (19.Rf4 Nd3 20.Qd3 Bd4 21.Rd4 cd4 22.Qd4 Qf6 23.Qf6 Rf6+-) 19...Nd3?? (better 19...Nc4 20.Qc1 Bd4 21.Kh1 Rf1 22.Bf1 Qh4-+) 20.Qd3 Bd4 21.Kh1 Qh4 22.Rae1 Rce8 23.Nd1 Bb2 24.Nb2 Bc8 25.Rf8 Rf8 26.Rf1 Bf5 27.Qg3 (27.Qd2!?+/-) 27...Qg3+= 28.hg3 Be4 29.Rf8 Kf8 30.Bd3 (30.g4 Ne8+/-) 30...Bd3 31.Nd3 Nf5 32.Kh2 Ne3 33.Nb2 Kf7 34.Kg1 Kf6 35.Kf2 Nd1?? (better 35...Ng4 36.Kf3 Kf5=) 36.Nd1+- 1-0. opperwezen (2870) - jimakos (2595), lichess.org, 2016.

4.e3 g6 5.Nc3 Bg7 6.Qc2 0-0 7.f4 e5 8.f5 a5 9.b5 Nc5 10.fg6 fg6 11.Nf3 Qe7 12.e4=+ c6 13.a3 Ng4 14.Bc1?? Rf3!–+ 15.gf3 Qh4 16.Ke2 Be6 (16...Be6 17.Nd1 cb5–+) 0–1. De Visser,Arno – Hauwert, 1987.

4.e3 g6 5.Nf3 Bg7 6.d4 0-0 7.Be2 c6 8.0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7 8.d4).

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 Nbd7).

4.Nf3 g6 5.Nc3 c6 6.a4 (6.d4 Qb6 7.a3 Bg7+=) 6...a5 7.b5 Bg7 8.e3 0-0 9.Qb3 (9.d4 c5=) 9...Nc5 10.Qa2 e5 11.d4 e4 (better is 11...ed4!? 12.Nd4 Ng4=) 12.dc5+/– ef3 13.0-0-0 (13.Rd1 Bg4 14.Rd6 Qc8+/–) 13...Ne8 14.gf3 Be6 (better is 14...Qf6!? 15.Be2 dc5+=) 15.cd6+/– Nd6? (better is 15...cb5 16.Nb5 Bb2 17.Qb2 Rc8+-) 16.Ne4+- cb5 17.Bg7 Kg7 18.Rd6 Qe7 19.Qb2 f6 (19...Kh6 20.Qe5 (20.cb5?! f5 21.Re6 Qe6+-) 20...ba4 21.Nf6 Qd6 22.Qd6+-) 20.Qb5 Rfd8 (20...Rad8 21.Rd8 Rd8 22.Qc5+- (22.Qa5?! Qa3 23.Kc2 Qa2 24.Kc3 Qa3 25.Kc2 Qa2 26.Kc1 Qa1 27.Kc2 Qa2=)) 21.Rb6 Qa3 22.Kc2 (better is 22.Qb2!? Qe7+-) 22...Qa2 23.Kc1 Bc4?? (23...Qa3 24.Qb2 Qe7+-) 24.Rb7 (24.Bc4 Rac8 25.Nd6 Rd6 26.Rd6 Rc4 27.Kd1 Qa4 28.Qa4 Ra4+-) 24...Kh8 (24...Bf7 25.Qc4 Qa1 26.Kc2=) 25.Qb2 (25.Qc4?! Rac8 26.Rc7 Qa1 27.Kc2 Rc7 28.Qc7 Qa2 29.Kc1 Qa1 30.Kc2 Qa2 31.Kc3 Qa3 32.Kc2 Qa2=; 25.Nf6?? Qd2 26.Kb1 Qd1 27.Kb2 Rd2 28.Ka3 Qa1) 25...Qb2 26.Kb2 Bd5 27.Nf6 (better is 27.Rc7 Be4 28.fe4+-) 27...Bb7–/+ 28.Ne4 Rab8 29.Bb5 Bc6 30.Rc1 Bb5 31.ab5 Rb5 32.Ka2 Rdb8 33.Rc2 (33.Rc7 Rb2 34.Ka3 Rb1–/+) 33...Rb4 (33...Rh5 34.Rc5 Rc5 35.Nc5–+) 34.Ka3 Rb3 (34...Rf8 35.Rc7–+) 35.Ka2–/+ a4 36.Nd2 Rd3 37.f4 a3 38.Nf3 Rdb3 39.Nd4 Rb2 40.Ka3 R2b6 (40...R8b3 41.Ka4 Rc2 42.Nc2–/+) 41.Rc4 Rb1 42.Nc2 Ra8 43.Ra4 Ra4 44.Ka4 Rb2 45.Nd4 Rf2 46.Kb4 h5 (46...Rh2 47.Kc4–+) 47.h3 (47.h4!?–/+) 47...Rh2–+ 48.Kc4 Rh3 49.Kd3 h4 50.Ke2 (50.Ke4 Rg3 51.Ne2 Rg2–+) 50...Kh7 (50...Rg3!? 51.Kf2 Rg4 52.Nf3–+) 51.Nf3 Kh6 52.Kf2 Kh5 53.Ng5 (53.Kg2 Rg3 54.Kf2–+) 53...Rh2 54.Kf3 Rh1 (better is 54...h3!? 55.Ne4 Rg2 56.Ng5–+) 55.Ne4 Ra1 (55...Rg1 56.Kf2 Rc1 57.Kf3–+) 56.Nf6 Kh6 57.Kg4 Rh1 (57...Kg7 58.Ne4 Re1 59.Kh4 Re3 60.Ng3–+) 58.e4 h3 59.Kg3 g5 (59...Kg7!? 60.e5 h2–+) 60.Ng4 Kh5 61.Nf2?? (better is 61.Nf6 Kg6 62.fg5 Kg5 63.Nd5–/+) 61...gf4–+ 62.Kf3 (62.Kf4 Rf1 63.Kg3 h2 64.Kh2 Rf2 65.Kg3 Rf6–+) 62...Rg1 (62...Rf1 63.Ke2 Rf2 64.Kf2 Kg4–+) 63.e5 (63.Nh3 Rg3 64.Kf4 Rh3 65.Kf5–+) 63...h2 0–1. Pisarsky,Georgy (2050) – Abanin,Vladimir (1840), Sukharev Memorial Seniors Open, 2011.

4.Nf3 g6 5.e3 Bg7 6.Be2 0-0 7.0-0 e5 8.d3 Re8 9.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Nbd7 8.Nbd2 Re8 9.0-0).

5.Nc3 a5 6.a3 e4=.

5.d3 a5 6.b5+=.

5.d3 Be7 6.Nbd2 0-0 7.g3+= c6 (7...a5 8.a3=) 8.Bg2= Qc7 (8...a5 9.a3=) 9.0-0 d5 (9...a5 10.b5+=) 10.a3 (10.cd5 cd5 11.Rc1 Qd6+=) 10...d4= 11.c5 (11.Qb3 b6=) 11...Nd5 (11...b6 12.cb6 ab6 13.e3 de3 14.fe3=) 12.Nc4 (12.Qa4 a5 13.Nc4 b5 14.cb6 N5b6 15.Nb6 Nb6=) 12...b5 (12...b6 13.cb6 ab6 14.Qc1=) 13.cb6 (13.Na5 Bd8=) 13...ab6= 14.Rc1 Bb7 15.Qb3 (15.Qd2=) 15...c5 (15...Bf6 16.Rfe1=) 16.bc5 (16.e4!? N5f6 17.a4+=) 16...Bc5 (16...Nc5 17.Qc2 f6 18.e3 de3 19.Ne3+=) 17.Ng5= Rab8 (17...h6 18.Ne4=) 18.Rc2 b5? (18...Be7!? 19.Ne3 Nc3 20.Bc3 Nc5+=) 19.Nd2 (19.Na5! Qa5 20.Bd5 Bd5 21.Qd5+/–) 19...N5f6 20.Nge4 Bd5?? (better is 20...Qb6+/–) 21.Nf6+- Nf6 22.Bd5 (22.Bd5 Qe7 23.Ne4 Nd5 24.Qd5+-) 1–0. Schmitt,Matthieu (1925) – Dubois,Benjamin (1665), 9th Rouen France, Open, 2016.

5.d3 Be7 6.Nbd2 a5 7.a3=.

5.d3 Be7 6.Nbd2 c6 7.e3 h6 (7...a5 8.b5=) 8.a3 Qc7 9.h3 Nf8 10.Be2 Bd7 11.Qc2 Rc8 (11...Ne6 12.d4 ed4 13.Nd4 (worse 13.ed4 Nf4=) 13...Nd4 14.Bd4+=) 12.Rc1 (12.d4 ed4 13.Nd4 Ng6+=) 12...b6 13.Qb1 (13.d4 ed4 14.Nd4 Ng6+=) 13...g5 (13...Ne6 14.0-0+=) 14.Nh2 (14.d4 ed4 15.Nd4 Ng6+/-) 14...Ng6 15.Bg4 (15.d4 c5+=) 15...Bg4 (15...Ng4 16.hg4 h5 17.gh5 Rh5 18.Qc2=+) 16.Ng4= Ng4 17.hg4 Qd7 18.f3 Nh4 19.Kf2 f5 (19...a5 20.d4=) 20.gf5 (20.g3!? Nf3 21.Kf3 fg4 22.Ke2+-) 20...Qf5 21.d4 Qf7 (21...Qe6!?+=) 22.de5+/- de5 23.Be5 Rf8 24.Qe4 Kd8 (24...h5 25.Bd6 Nf5 26.Be7 Ne7 27.Qe5+-) 25.Rhd1 Ke8 26.c5 Qf5 (26...b5 27.Bd6+-) 27.Qf5 (27.cb6 Qe4 28.Ne4 ab6 29.Nd6 Bd6 30.Rd6 Rf5+-) 27...Nf5 (better 27...Rf5 28.Bd6 bc5 29.bc5 Rd8+-) 28.e4 Nh4 29.Kg3 (better 29.cb6!? ab6 30.Nc4 Ra8+-) 29...Ng6 30.Bd6 Bd6 31.cd6 Kd7 32.Nc4 b5 (32...Rf6 33.Ne3+-) 33.Ne3 (33.Na5 Nf4 34.Rd2 Ne6+-) 33...Rce8 34.Rc5 Nf4 (34...Re6 35.Nf5 h5 36.a4+-) 35.Nf5 (35.Ng4 Ng6+-) 35...h5 (35...Rf6+-) 36.Rdc1?? (better 36.Ng7 h4 37.Kh2+-) 36...h4? (36...Ne2 37.Kh3 Nc1 38.Rc1=) 37.Kf2 (better 37.Kg4 Nd3 38.R1c2 (38.Rc6?! Ne5 39.Kg5 Nc6=; worse 38.Kg5 Rg8 39.Kh6 Rg2-/+) 38...Nc5 39.Rc5+/-) 37...Nd3= 38.Ke3? (38.Kg1!? Nc1 39.Rc1 Rf5 40.ef5 Kd6 41.f6=) 38...Nc1-/+ (worse 38...Nc5 39.Rc5 a5 40.Nd4 (worse 40.ba5 Ra8=+) 40...ab4 41.ab4+=) 39.Rc1?? (better 39.Nd4 Na2 40.Rc6-/+) 39...g4 (better 39...Rf5 40.Kd4 Rf6-+) 40.Kf4 (better 40.fg4 a5 41.Rh1+- (41.ba5?! Ra8+=)) 40...gf3= 41.gf3 Re6 (41...h3 42.Rh1 Rh8 43.e5=) 42.Rh1+= Rd6 43.Rh4 Rd2 (43...Kc7!? 44.Ke3 Rd1=) 44.Rh7+/- Kc8 45.Ra7 Kb8 46.Re7 (46.Ra5 Kc7+/-) 46...Ra2 (46...Rd3!?=) 47.Ke5+/- Ra3 48.f4 Rb3 49.Nd4 Rc3 50.f5 Kc8 (50...Rc4 51.Ne6 Rh8 52.f6 Rh5 53.Kf4+-) 51.f6 Re3 (51...c5 52.Ne6 Rf6 53.Rc7 (53.Kf6?! cb4 54.Ra7 b3+-) 53...Kb8 54.Kf6 cb4 55.Rc5 Rc5 56.Nc5+-) 52.Nc6 (better 52.f7 Rc3 53.Re8 Kd7 54.Rf8+-) 52...Re8 (52...Rf3 53.Re6 Kb7+-) 53.Re8 (53.Re8 Kd7 54.f7+-) 1-0. bjoern (2075) - PxPMate (2065), Rated Bullet game, lichess.org, 2014.

(-->1.b4 e5 2.Bb2 d6 3.c4 Nf6).

4.b5 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.Nc3 g6 5.e3 Bg7 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3).

4.Nc3 g6 5.Nf3 Bg7 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3).

4.e3 Nbd7 5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

4.e3 Be6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6).

4.e3 Be6 5.b5 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Be6).

4.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7).

4.e3 Be7 5.Be2 0-0 6.Nf3 b6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6).

4.e3 Be7 5.Be2 Nbd7 6.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7).

4.e3 Be7 5.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0).

4.e3 Be7 5.Nf3 0-0 6.Be2 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

4.e3 Be7 5.Nf3 a5 6.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 Be7 6.Nf3).

4.e3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5).

4.e3 g6 5.Nc3 Bg7 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3).

4.e3 g6 5.Be2 Bg7 6.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5).

4.e3 g6 5.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

4.e3 g6 5.Nf3 Bg7 6.d4 ed4 7.ed4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.ed4).

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5).

4.h3 (--> 1.b4 e5 2.Bb2 d6 3.h3 Nf6 4.c4).

4.h3 Be7 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.h3).

4.e3 Be7 5.d4 c6 (5...0-0 6.a3=) 6.a4 (6.Bd3 e5=) 6...0-0+= 7.Nf3 b6 (7...e5 8.Be2=) 8.Nc3 Na6 (8...d5 9.Ba3=) 9.Qb3 (9.b5 Nb4=) 9...d5 (9...c5 10.dc5 bc5 11.b5=) 10.c5 (10.Ba3 c5 11.bc5 bc5 12.cd5 Rb8=) 10...bc5 11.bc5 Rb8 12.Qc2 Nb4 13.Qd2 a5 (13...Nd7 14.Be2=) 14.Ba3 (14.Be2 Nd7=) 14...Na6 (14...Nd7 15.Bb4 Rb4 16.Be2=) 15.Bd3 Nb4 (15...Nd7 16.Qc2=) 16.Be2 (16.Bb4 ab4 17.Na2 Qa5+=) 16...Na6 (16...Qc7 17.0-0=) 17.0-0+= Nb4 18.Rab1 (18.Rfb1 Qc7+=) 18...Na6 (18...Qc7 19.Rb3+=) 19.Rb8 (19.Bd3 Nd7+/–) 19...Nb8+= 20.Rb1 Ba6? (20...Nbd7 21.Bd3+=) 21.Rb6?? (21.Rb8 Qb8 22.Ba6 Qc7+-) 21...h6? (better is 21...Be2 22.Qe2 Qc8=) 22.Ba6 (better is 22.Ra6 Na6 23.Ba6+-) 22...Ng4?? (22...Nfd7 23.Rb8! Qb8+-) 23.Qb2 (23.Bd3 Qc7+-) 23...Qc7 24.h3 Nf6 25.Ne5 Na6 26.Ra6 Rb8 27.Rb6 Rc8 28.Rb7 (28.Nc6 Qd7 29.Na5 Bd8+-) 28...Qd8 29.Qb6 Nd7 (29...Qe8+-) 30.Qd8 (better is 30.Nd7 Bh4+-) 30...Rd8 (30...Bd8 31.Rd7 Bf6 32.Nf7+-) 31.Nd7 (better is 31.Nc6 Bc5 32.dc5 Nc5 33.Bc5 Ra8+-) 31...Rc8 32.Nb6 (32.Nb6 Re8 33.Rc7+-) 1–0. jaddwarrior (2015) – _Soulshine_ (1915), ChessWorld.net, 2013.

4.e3 Be7 5.Nf3 0-0 6.d4 (6.Be2 e5=) 6...b6 (6...e5 7.Nc3=+) 7.Bd3= Bb7 8.Nbd2 Nbd7 9.Qc2 c5 10.a3 e5 (10...cb4 11.ab4 a5 12.ba5 Ra5 13.0-0+=) 11.bc5 (11.de5 de5 12.b5 Qc7=) 11...ed4= (11...dc5? 12.de5 Ng4 13.Bh7 Kh8 14.Be4 Be4 15.Ne4+-) 12.ed4 dc5 13.d5 Re8 (13...b5 14.Rd1=) 14.0-0+= Bd6 (14...b5 15.Bf6 Nf6 16.Rab1 bc4 17.Bh7 Nh7 18.Rb7 Qd5 19.Rfb1=) 15.Rfe1 Qc7 16.h3 Ne5 17.Ne5 Be5 18.Nf3 (18.Be5 Re5 19.Ne4 Ne4 20.Be4 Rae8+=) 18...Bb2= 19.Qb2 Re1 20.Re1 Re8 21.Re8 Ne8 22.Bh7?? (better 22.Qe2 Qd8 23.Ne5+=) 22...Kh7-+ 23.a4 Qf4 24.Qc2 g6 25.Nd2? (better 25.Qe2 Nd6 26.Qe7-+) 25...Nd6 26.g3 (26.Qd3 Ba6-+) 26...Qd4 27.h4 Ba6 28.h5 Nc4 29.hg6 fg6 30.Nf3 (30.Nc4 Bc4 (worse 30...Qc4 31.Qc4 Bc4 32.d6-+) 31.d6 Qa1 32.Kg2 Qf1 33.Kf3 Bd3-+) 30...Qd5 31.Nh4 (31.Qe2 Bb7 32.Qe7 Kg8 33.Qe8 Kg7 34.Qe7 Qf7 35.Qf7 Kf7-+) 31...Ne5 32.f4 Nf3 (32...Nf3 33.Nf3 Qf3 34.Qh2 Kg7 35.Qb2 Kf7-+) 0-1. jhonores (2155) - Mazelk (2005), Rated Blitz game, lichess.org, 2020.

4.e3 Be7 5.Nf3 b6 6.Nc3 0-0 7.Be2 Bb7 8.0-0 Nbd7 9.d4 c6 10.a4 a6 11.Qc2 Ra7 12.Bd3 Re8 13.h3 e5 14.de5 de5 15.Rad1 Qb8 16.Qb3 a5 17.Bf5 Bc8 18.Bd7 Bd7 19.b5 Bd6 20.Ng5 e4? 21.c5+/– Bh2 22.Kh1 Be6 23.Ne6 Re6 24.cb6 Rb7 25.Ne2 cb5 26.Bd4?? Nd7?? 27.Qb5 (27...Bd6 28.Qg5+/–; better is 27.g3!? ba4 28.Qa4 Nb6 29.Qa5+-) 1–0. Reimer,Karl – Meijers,Johannes, Nord West Cup, 2000.

4.Nc3 g6 5.Nf3 Bg7= 6.d3 Nc6 7.b5 Ne5 8.e4 Bg4 9.Be2 0-0 10.Ne5+/– Be2 11.Qe2 de5+= 12.0-0 Qd7 13.h3 Rfd8= 14.Rfd1 Nh5 15.Bc1 Nf4 16.Bf4 ef4 17.Rac1 c5 18.a4 e6 19.a5 Bh6 20.Rc2 Qe7 21.Qf3 Qc7 22.Ra2 Bg7 23.Ne2 g5 24.Qg4 Rf8 25.Qg5+/– e5 26.Nc1 Qd8 27.Qd8 ½–½. xadrezpg (2340) – gbsrao (2220), net–chess.com, 2010.

4.d3 c5 5.e4 Bd7 6.b5 e5 7.Be2 Qb6 8.a4 a5 9.Nf3 Na6 10.0-0 Nc7 11.Qd2 Ne6 12.g3 Be7 13.Kg2 Nh5 14.Nc3 Qd8 15.Nd5 Ng5?? 16.Ne7 Bh3+/– 17.Kg1 Nf3? 18.Bf3+- Ng3 19.fg3 Qe7 20.Bg2 Bg2 21.Qg2 0-0 22.Bc3 b6 23.Ra2 f6 24.Raf2 h6 25.h3 Rf7 26.Kh2 Raf8 27.Bd2 Qe6 28.Qf3 g5 29.Qh5 Rh7 30.Kg2 Kg7 31.Be3 Qf7 32.Qf7 Rf7 33.g4 Kg6 34.h4! gh4 35.Rh1 h3 36.Rh3 h5 37.Rh4 Kg7 38.gh5 Kf8 39.h6 Ke7 40.Rg4 Ke6 41.Rg8 f5 42.Rg6 (42.Rg6 Rf6 43.Rf6 Kf6 44.Rf5 Ke7 45.Bg5 Ke8 46.Rf6+-) 1–0. Humeau,Cyril (2160) – Geronimi,Didier (1800), Corsica–chT, 2007.

4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5).

4.Nf3 Nbd7 5.d3 e5 6.e4 Bg4 7.Be2 Be7 8.Nc3 Nh5 9.Nd5 c6 10.Ne3 Bf3 11.Bf3 Nf4 12.g3 Ne6 13.0-0 Nf6 14.Nf5 Qc7 15.a4 Bf8 16.b5 g6 17.Ne3 Nd4 18.Bg2 Bg7 19.f4 0-0 20.Bd4 ed4 21.Nc2 c5 22.Qd2 Rab8 23.a5 a6 24.b6 Qd7 25.h3 Kh8 26.Ne1 Rfe8 27.Kh2 Re7 28.Bf3 Rbe8 29.Bd1 Qc8 30.Ba4 Rd8 31.Nf3 Bh6 32.Rae1 Qb8 33.g4 d5 34.e5 Nh5?? 35.gh5+- f6 36.hg6 fe5 37.Ne5 (37.Ne5 Re5 38.Re5 Qe5 39.fe5 Bd2 40.e6+-) 1–0. Tanguy,F (2060) – Cuq,Christian, 8th Open, Saint–Chely d'Aubrac FRA, 2008.

4.Nf3 Nbd7 5.e3 e6 6.Be2 Be7 7.0-0 0-0 8.d3 c5 9.a3 d5 10.bc5 Bc5 11.d4 Bd6 12.cd5 ed5 13.Nc3 Re8 14.Qb3 The isolani on d5 becomes a target 14...Be6 15.Rab1 (worse is 15.Qb7 Rb8 16.Qa7 Rb2–/+) 15...b6 16.Nb5 Bb8 17.a4 Ne4 18.Rfc1 a6 19.Na3 Qf6 20.Qd1 Qg6 21.Rc6 Ng5 (21...Bd6 22.Rbc1=) 22.Nh4 (22.Ne5 Qh6=) 22...Qe4 23.Nf3 Nf3 24.Bf3 Qh4 25.g3 Qe7 26.Rbc1 Bd6 (26...Qb4 27.Qc2=) 27.Nb1+= Reb8? (27...Bb4+=) 28.Nc3?? (better is 28.Rd6 Qd6 29.Ba3+-) 28...Nf6= 29.Qb3 Bd7 30.Rb6 Rb6+= (30...Rb6 31.Qb6 Rb8 32.Qa6 Rb2+=) 0–1. Cabezas Cantillana,Marco (1815) – Vera,Claudio (2070), Honor Club Chile op, 2004. (=1.c4 Nf6 2.b4 d6 3.Bb2)

4.a4 Bg7 5.b5 Nh5 (5...e5 6.d4=+) 6.Nc3 (6.Bg7 Ng7 7.d4 a6=) 6...Nd7 7.e3 a6 8.Be2 Nhf6 9.Nf3 ab5 10.ab5 0-0?? (better 10...Ra1 11.Qa1 0-0+=) 11.Ra8+- Nc5 (11...e5 12.d4+-) 12.0-0 Qd7 (12...Ncd7 13.Qa1+-) 13.d4 Ne6 14.Nd5 Nd5 (14...c6 15.Nf6 Bf6 16.Qc2+-) 15.cd5 Nd8 16.Nd2 (16.Qc2 b6+-) 16...c6 (16...e6 17.Qb3+-) 17.dc6 (17.Qc2!? Qc7+-) 17...bc6 18.bc6 Nc6 19.Bf3 Bb7 20.Rf8 Kf8 21.Nc4 e5 (21...Nb4+-) 22.de5 Ne5 (22...Nd8 23.Nd6 Bc6 24.Bc6 Nc6 25.Qd5 Be5 26.Be5+-) 23.Be5 Be5 24.Ne5 Qf5 (24...Qc7 25.Ng4 Ba6+-) 25.Qd6 (25.Qd6 Kg8 26.Bb7+-) 1–0. BeepBeepImAJeep (2595) – KingGadamer (1895), lichess.org, 2017.

4.b5 b6 5.e3 Bb7 6.Nf3 Bg7 7.d4 0-0 8.Nbd2 c6 9.a4 cb5 (9...a6 10.Bd3=) 10.ab5+= a5 11.Qc2 Nbd7 12.Be2 e5 13.0-0 Re8 14.de5 (14.d5 Qc7 15.e4 Nc5+=) 14...de5= 15.Rfd1 Qc7 16.Ng5 Nc5 17.e4 (better is 17.Nb3!?=) 17...h6–/+ 18.Ngf3 Nfe4 19.Ne4 Be4 20.Qc3 f6 21.Ne1 Rad8 22.f3 (22.Qg3 Rd1 23.Rd1 Rd8 24.Rd8 Qd8–/+) 22...Bb7 23.Qc2 e4 24.Rd8 Rd8 25.Rd1 ef3 26.Rd8 Qd8 27.Nf3 Bf3 (27...Be4 28.Qc1–/+) 28.Bf3 Qd3 (better is 28...Qe7!? 29.Kf1 f5–/+) 29.Bd5 (29.Qd3 Nd3 30.Bd4 a4 31.Bb6 a3 32.Bd5 Kf8+=) 29...Kh7 (29...Kh7 30.Qd3 Nd3+=). GuestNMMY – startagain, freechess.org, 2017.

4.b5 Bg7 5.Nf3+=.

4.Nc3 e6 5.b5 (5.e4 e5=) 5...Bg7 6.Qb3 (6.d4 Nbd7=) 6...0-0 7.Nf3 c6 (7...e5 8.e4=) 8.a4 e5 9.e4 Bg4 10.Be2 Bf3 (10...Nfd7 11.bc6 bc6 12.Ba3=) 11.Bf3+= Nbd7 12.Ba3 c5 13.0-0 Qc7 14.Qc2 b6 15.d3 (15.Bb2 a5+=) 15...Bh6 16.Bc1 (16.Bb2 a6+=) 16...Bc1 17.Qc1 Kg7 18.Be2 a6 19.f4 ab5 20.fe5 Ne5?? (20...de5 21.Nb5 Qc6 22.Qg5=) 21.Qf4?? (better is 21.Rf6 ba4 22.Nd5+-) 21...Ned7 (21...Qe7!? 22.ab5 Ra1 23.Ra1 Ned7+=) 22.Nb5+/– (22.Nb5 Qb8 23.Nd6+/–) 1–0. Kislov,Leonid – Sosunov,Sergey, Omsk Russia, City Championship, 2013.

4.d3 Bg7 5.Nd2 e5 6.h3 Nc6 (6...0-0 7.Ngf3+=) 7.b5+= Ne7 (7...Nd4 8.e3 Ne6 9.Ngf3+=) 8.Ngf3 0-0 9.g4 Ne8 (9...a6 10.a4=) 10.Rb1 (10.g5 a6 11.a4 c6+=) 10...c6 (10...a6 11.a4+=) 11.a4 Qc7 (11...Nc7 12.g5=) 12.Ba3 (12.g5 Rb8=) 12...c5= 13.Bg2 h6 14.0-0 f5 15.Nh2 (15.g5!?=) 15...Nf6–/+ 16.e3 g5 (16...Bd7 17.Qe2–/+) 17.f4 ef4 18.ef4 Nh7 (18...fg4!? 19.fg5 gh3 20.Rf6 Bf6 21.gf6 hg2=) 19.fg5+= hg5 20.Bb2 Ng6 21.gf5 Nf4 22.Ndf3? (better is 22.Ng4!?+=) 22...Bb2 23.Rb2 Qg7 (23...Bf5?! 24.Ng5 Ng5 25.Rf4 Nh3 26.Bh3 Bh3 27.Rbf2 Rf4 28.Rf4 Qg7 29.Ng4=) 24.Qd2? (better is 24.d4–/+) 24...Bf5–+ 25.Kh1 (25.Rb3 Rae8 26.Re1 Bh3 27.Bh3 Nh3 28.Kh1–+) 25...Ng2?? (better is 25...Bd3 26.Rf2 Bc4–+) 26.Kg2–/+ Qh6 (26...Qg6 27.Rb3–/+) 27.Kh1 (27.h4 Qg6 28.Ng5 Bd3–/+) 27...Bh3 (27...Qh3 28.Rg1 g4 29.Qg2–+) 28.Rf2? (better is 28.Rg1!? Rf3! 29.Nf3 Bg4 30.Nh2 Bf3 31.Rg2–/+) 28...Bg4 29.Kg1 Bf3 (better is 29...Qh5!? 30.Ne1 Rae8–+) 30.Rf3–/+ Rf3 31.Nf3 Rf8 32.Qe3?? (32.Qg2 Qg7 33.Re2 g4–/+) 32...Qf6 (better is 32...Qh3 33.Rf2 Qg3 34.Kf1 g4–+) 33.Rf2–/+ g4 (33...Qf5!? 34.Nd2 Qf2 35.Qf2 Rf2 36.Kf2 Kf7–/+) 34.Nh2= Qa1 35.Kg2 Rf2 36.Qf2 (36.Kf2!? Qg7 37.Kg3=) 36...Qg7 (36...Nf6!?–/+) 37.Qe2 0–1. Isler,Benjamin – Bornhorst,Lars (1650), Kiel GER, Open–B, 2014.

4.d4 Bg7 5.Nd2 0-0 6.e4 c6 7.Ngf3 e5 8.d5 a5 9.Qb3 ab4 10.Qb4 c5 11.Qb3 b6 12.Be2 Bg4 13.0-0 Nbd7 14.h3 Bf3 15.Bf3 Qc7 16.a4 Bh6 17.Nb1 Ne8 18.Nc3 Ng7 19.Nb5 Qb8 20.Rfe1 1–0. Schalkwijk,Peter – Xu,Muen, SD–2008–0-00020, 2008.

4.d4 Bg7 5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6 5.d4).

4.d4 Bg7 5.e3 0-0 6.Be2 c6 7.Nf3 Nbd7 8.0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7 8.d4).

4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6).

4.e3 Bg7 5.d4 0-0 6.Be2 Nbd7 7.Nf3 c6 8.0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7 8.d4).

4.e3 Bg7 5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6).

4.e3 Bg7 5.Nf3 0-0 6.Be2 e5 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2).

4.e4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4 d6).

4.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6).

4.Nf3 Bg7 5.d4 0-0 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4).

4.Nf3 Bg7 5.e3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6).

4.Nf3 Bg7 5.e3 0-0 6.Be2 Nbd7 7.0-0 b6 8.d4 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6 6.Be2 Bb7 7.0-0 d6 8.d4 Nbd7).

4.Nf3 Bg7 5.e3 0-0 6.Be2 e5 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5).

4.Nf3 Bg7 5.g3 0-0 6.Bg2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.g3 c6 6.Bg2 d6).

4.Bf6 ef6 5.e3 Nc6=.

4.g3 Bg7 5.Bg2 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.g3 d6 6.Bg2) .

4.g3 Bg7 5.Bg2 c6 6.Nc3 Qb6 7.Qb3 0-0 8.Nf3 e5 9.d3 Na6 10.a3 Nc5 11.Qc2 Ne6 12.0-0 a5 13.b5 Bd7 14.Rab1 Qa7 15.Qd2 c5 16.Ng5 Rae8 17.b6 Qb6 18.Ba1 Qd8 19.Rb7 Nd4 20.e3 Bc6 21.Bc6 Nc6 22.Nd5 Nd5 23.cd5 Qg5 24.dc6 f5 25.Qa5 Rc8 26.Qb5 Bh6 27.f4 Qf6 28.a4 Qe6 29.a5 Qd5 30.a6 (30...Qc6 31.Qc6 Rc6 32.a7+-) 1–0. Kleiser,Gregor (2155) – Steiner,Peter (2120), AUT–chT2S, Klagenfurt, 2000.

4.g3 Bg7 5.Bg2 Nc6 6.b5 Ne5 7.d3 c6 8.f4 Neg4 9.Qc1 Qb6 10.d4 0-0 11.a4 e5 12.c5 dc5 13.dc5 Qc7 14.fe5 Nd5 15.Bd5 cd5 16.Nf3 Ne5 17.Be5 Be5 18.Ne5 Qe5 19.Qc3 d4 20.Qa3 Bg4 21.Ra2 Rfe8 22.0-0 Be2 23.Re1 d3 24.Nd2 Qe3 0–1. Trkn – olivier, itsyourturn.com, 2001.

5.d4 0-0 6.Nf3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 b6 10.Nbd2 c5 (10...Bf5 11.h3=) 11.e3 (11.bc5!? dc5 12.dc5+/-) 11...cb4 (11...Bf5 12.bc5 bc5 13.Bd3=) 12.Qb4 Bb7 13.Be2 Nbd7 14.0-0 Qc7 15.Rc1 Ra8 16.Bb2 Ne4 17.Ne4 Be4 18.Nd2 Bb7 19.Nb1 Nf6 20.f3 Bh6 21.Kf2 Ra2 (21...d5 22.f4=) 22.Qb3 (22.Na3 d5 23.Qb3 Qh2 24.Bf1 (24.Qa2 Qh4 25.g3 Qh2 26.Ke1 Qg1 27.Bf1 Qe3 28.Be2 Bc8-+; 24.Qb6?? Qh4 25.g3 Qh2 26.Ke1 Be3-+) 24...Qh4 25.Ke2=) 22...Ra5+= 23.Bc3 Ra7 24.Bd2 Qd8 25.Nc3 Bg7 (25...e5 26.Nb5 Ra6 27.Kg1+=) 26.Nb5 (26.Rb1!?+=) 26...Ra8= 27.Rb1 Nd7 28.Nc3 (28.Kg1 Bc6+=) 28...Bc6 29.Bd3 Qc7 (29...h6 30.Kg1+=) 30.Nd5 Attacks the isolani on b6 30...Bd5 31.cd5 Qa7 32.Bb5 Nf6 33.Bc6 Rb8 34.g4 (34.Kg1 Qc7+/-) 34...h5 (34...h6 35.Qb5+=) 35.h3 hg4 36.hg4 Kf8 37.Bc3 1-0. ClayPigeons (2090) - niltonbravo (2045), Rated Bullet game, lichess.org, 2019.

5.e3 0-0 6.d4 a5 7.Nc3 (7.ba5 c5=+) 7...ab4 8.Qb4 Na6 (8...e5 9.Nf3 ed4 10.ed4 Re8 11.Be2-/+) 9.Qb3 c5 (9...e5 10.de5 de5 11.Rd1=+) 10.Nf3 cd4 (10...Bf5 11.a3= (worse 11.Qb7 Nb4 12.Rc1 Rb8-+)) 11.ed4= e5 12.Be2 ed4 13.Nd4 Nc5 14.Qc2 Bf5 (14...Ng4 15.Ncb5=+) 15.Qd1 (better 15.Nf5!? gf5 16.Qf5+/-) 15...Re8 (15...Nfe4 16.0-0=) 16.Nf5 gf5 17.0-0 Nfe4 18.Ne4 Ne4 (18...fe4!? 19.Bg7 Kg7=) 19.Bg7+= Kg7 20.Bf3 Qf6 21.Qd5 Re5 (21...Ra3 22.Qb7 Nd2 23.Rfd1 Nf3 24.gf3+=) 22.Qb7+/- Ra3 23.Qb4 (better 23.Be4 fe4 24.Rae1+/-) 23...Rf3? (better 23...Rea5+=) 24.gf3+- Ng5 (24...Qh4 25.Kg2 (25.fe4?! Qg4 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1 Qf3 29.Kg1 Qg4=) 25...Re6 26.Qb2 Kh6 27.Rg1 Rg6 28.Kf1+/-) 25.Qb3 (better 25.Kh1 Nf3 26.Qc3+-) 25...Qe7?? (25...Nh3 26.Kg2 Re6 27.f4+- (27.Kh3?! Qg5 28.Qb2 Kg8 29.Qb8 Kg7 30.Qb2 Kg8 31.Qb8 Kg7 32.Qb2=)) 26.Kh1 (better 26.f4 Re4 27.Qc3 Qf6 28.Qf6 Kf6 29.fg5 Kg5 30.Rfc1+-) 26...Qf6?? (26...Nh3 27.Qc3 f6+-) 27.f4 1-0. ClayPigeons (2135) - niltonbravo (2085), Rated Bullet game, lichess.org, 2019.

5.e3 0-0 6.d4 a5 7.Nf3 ab4 8.Qb4 Nd5?? (8...Nc6 9.Qb3=+) 9.Qb3 (better 9.cd5 Na6 10.Qb3+-) 9...Nf6 10.Nc3 Nc6 11.Bd3 Na5 12.Qc2 c6 (12...Bg4 13.Ne4=) 13.0-0+= Bg4 14.h3 (14.Qe2 e5=) 14...Bf3= 15.gf3 Rb8 (15...e5 16.de5 de5 17.Rfd1=) 16.Kg2 b5 (16...Nd7!?=) 17.cb5+/- cb5 18.Nb5 Qb6 (18...Qd7 19.Qe2+=) 19.a4 (19.Rfc1 Nd5 20.Ba3 Qd8+/-) 19...Rfc8 20.Qe2 Nd5 21.Rab1 Nb4 22.Ba3 Nd3 23.Qd3 (23.Nd6 Qa6 24.Nc8 Rc8+/-) 23...Qd8+= 24.Rfc1 Rc1 25.Rc1 (25.Bc1 Nc6 26.Ba3+=) 25...Bf6 (25...d5!?+=) 26.Qc3+/- Nb7 (26...d5 27.Qc7+/-) 27.Qc7 Qc7 28.Rc7 Na5 (28...Kg7 29.e4+-) 29.Bb4 Nb3 (29...Nb7 30.e4+-) 30.Kf1 (30.Rc3 Nd4 31.ed4 Bd4+-) 30...Ra8 31.Ra7 Ra7 32.Na7 e5? (better 32...Kf8+-) 33.de5 de5 34.Nc6 e4 (34...Bg7 35.a5 Na5 36.Ba5+-) 35.f4 (better 35.fe4 h6 36.e5+-) 35...Nc1 (35...Bg7 36.a5 Na5 37.Ba5 f5+-) 36.a5 Nd3 37.Bd6 (better 37.a6 Nb4 38.Nb4 Be7+-) 37...Bc3 (37...Bd8 38.Nd8 Nb2+-) 38.a6 Nb4 39.Nb4 Bb4 40.Bb4 Kg7 (40...f6 41.a7 h6 42.a8Q Kf7 43.Qf8 Ke6 44.Qd6 Kf7 45.Qe7 Kg8 46.Qf8 Kh7 47.Qf7 Kh8 48.Bc3 g5 49.Bf6) 41.a7 (41.a7 g5 42.a8Q h6 43.Bf8 Kg6 44.Qe4 Kf6 45.Qe5 Kg6 46.f5 Kh5 47.Qf6 Kh4 48.Qh6) 1-0. ClayPigeons (2155) - sergytromposky (1995), Rated Bullet game, lichess.org, 2020.

5.e3 0-0 6.d4 Nc6 (6...a5 7.ba5 c5 8.d5=) 7.Nf3= a5 (7...Bf5 8.b5 Na5 9.Qa3=) 8.b5+= Nb8 9.Nc3 Nbd7 10.Rd1 Re8 11.Be2 e5 12.0-0 Qe7 (12...ed4 13.ed4 Nb6 14.a4+=) 13.Rfe1 e4 14.Nd2 c6 15.a4 Nb6?? (15...c5 16.Qc2+=) 16.Ba3?? (better 16.bc6 Nc4 17.Nc4 bc6 18.Qb6+-) 16...c5+= 17.Qc2 The pressure on e4 grows (17.dc5 dc5 18.Nd5 Nfd5 19.cd5 Rd8+=) 17...Bf5 (17...cd4 18.ed4 e3 19.Nf1 ef2 20.Kf2=+) 18.Nb3+= Rac8 (18...Rec8 19.Rd2=) 19.dc5 dc5 20.Rd2 (20.Na5 Qc7+=) 20...Qe5 (20...Ng4 21.Bb2 Nh2=+) 21.Red1 (better 21.h3+/-) 21...Ng4-/+ 22.Bg4 Bg4 23.Nd5 Nd5 (worse 23...Na4 24.Rf1 Be6 25.Na5 Bd5 26.Rd5+/-; 23...Bd1?! 24.Rd1 Nd5 25.Rd5=+) 24.Rd5 c5 becomes the focus of attention 24...Qc3?? (better 24...Bd1 25.Qd1 Qc3 26.Bc5 h6=+) 25.Qc3+/- Bc3 26.Rc1 Bb4 27.Bb4 cb4 28.c5?? (28.Na5!? b6 29.Nc6+/-) 28...Ra8?? (better 28...Be6 29.Rcd1 Ra8-/+) 29.Nd4+= White prepares the advance c6 29...Be6 30.Ne6 Re6 31.c6 bc6 32.bc6 Rc8 (32...Kg7!? 33.c7 Ree8+=) 33.c7+/- Ree8 (better 33...Kf8 34.Ra5 Re7+/-) 34.Rd7 (better 34.Kf1!?+-) 34...Kg7 (34...Kf8 35.Rcd1 Kg7 36.f3 ef3 37.Rd8=) 35.Rc5+= Kf6 36.Ra5 Ke6 37.Rad5 (37.Rd4!? Rc7 38.Re4 Kf6 39.Rf4 Ke6 40.g3+-) 37...Re7?? (better 37...Rc7! 38.R5d6 Ke5 39.f4 ef3 40.Rd5 Ke6 41.R5d6 Ke5 42.Rd5 Ke6 43.R5d6 Ke5=) 38.R7d6 1-0. ClayPigeons (2145) - quetiotu (2145), Rated Bullet game, lichess.org, 2020.

5.e3 c6 6.Nf3 Nbd7 7.d4 Qc7 (7...a5 8.ba5 Ne4 9.Qc2 Qa5 10.Nbd2=) 8.Be2 0-0 9.Nc3 e5 10.0-0 a6 11.a4 Nb6 (11...a5 12.b5+=) 12.Rac1 (12.de5 de5 13.Ne5 a5+/-) 12...Be6 (better 12...Nbd7+=) 13.b5?? (better 13.de5!? de5 14.Ne5+/-) 13...ab5 (13...cb5!? 14.ab5 Bc4 (14...Nc4?! 15.d5 Na5 16.Qb4+=) 15.Bc4 Qc4=+ (15...Nc4?! 16.de5 de5 17.ba6=)) 14.ab5= Rfb8 (better 14...ed4!? 15.ed4 Rfe8=) 15.de5+/- de5 16.Rfd1 (16.Ne5 Qe5 17.Nd5 Qb2 18.Ne7 Kf8 19.Ng6 fg6 20.Qb2 Ne4+/-) 16...Nfd7 (16...Nbd7 17.Ba3 c5 18.Bb2+=) 17.Ne4 (better 17.Ng5 Nc5 18.Ne6 Ne6 19.Ba3+=) 17...Nc5?? (better 17...h6=) 18.Nc5+- cb5 (18...Bf5 19.e4 Bg4 20.h3 Bf3 21.Bf3+- (worse 21.gf3 Qe7 22.Qe3 Ra2+-)) 19.Qb5 (19.Ne6!? fe6 20.cb5 Qe7+-) 19…Nc4 1-0. ClayPigeons (2120) - Zasandalopuper (1765), Rated Bullet game, lichess.org, 2020.

5.e3 e5!?=+.

5.e3 Kf8 6.d4+= c5 7.Nf3 cd4 8.ed4 Nc6 (8...a5 9.ba5 Qa5 10.Bc3+=) 9.Bd3 (9.d5 Nb8+/-) 9...Bh6 (9...Bg4 10.Nbd2+=) 10.0-0 (10.d5 Nb8+/-) 10...Kg7 (10...Bg4 11.Nbd2 Bd2 12.Nd2+/-) 11.d5+/- Nb8 12.Nc3 Re8 13.Ne4 Kg8 14.Nf6 ef6 15.Rae1 Bg4 (15...Re1 16.Re1 Nd7 17.a3+/-) 16.Re8 (16.Bf6!? Qd7 17.Re8 Qe8+-) 16...Qe8+/- 17.Re1 Qd8 18.Bc2 Nd7 19.h3 (19.Nd4!? Ne5 20.Qc3+/-) 19...Bf3+= 20.Qf3 Bg7 (20...Bd2 21.Rb1+=) 21.g4 (21.Bd4!?+/-) 21...Ne5+= 22.Qe2 Rc8 23.Bb3 (23.Bd3 Qb6 24.a3 a5+=) 23...Qb6 (23...f5 24.gf5 Qg5 25.Kh1=) 24.a3+= a5 25.Bc3 ab4 26.ab4 h6 27.Rd1 (27.Rc1 Qa7+=) 27...Kh7 (27...Qc7=) 28.h4 (28.Rc1 Qa6+=) 28...g5 (28...Nc4 29.Bc4 Qc7+=) 29.h5 (29.Bc2 Kg8+/-) 29...Qc7 30.Kg2 (better 30.c5 Kg8 31.Bd4+/-) 30...Qd7? (30...Kg8 31.Rc1=) 31.f3?? (31.Bc2 Kg8 32.Bf5 Qc7 33.Bc8 Qc8 34.Be5 fe5+-) 31...b5? (better 31...Kg8+=) 32.Bc2+- Kg8 33.Be5 (33.Bf5 Qc7 34.Bc8 Qc8 35.Be5 fe5+-) 33...fe5? (better 33...Re8+/-) 34.Qd3?? (better 34.Bf5 Qc7 35.Bc8 Qc8 36.cb5+-) 34...bc4-/+ 35.Qh7 Kf8 36.Ra1 c3 (better 36...Qb7-/+) 37.Bf5= Qc7?? (better 37...Qb5 38.Bc8 Qe2 39.Kg1 Qe3 40.Kg2 Qe2 41.Kg1 Qe3 42.Kg2 Qe2=) 38.Bc8+- Qc8 39.Qf5 Qf5 (39...Qb7!?+/-) 40.gf5+- Ke7 (40...e4 41.fe4 Ke7 42.Ra7 Kd8 A) 43.Rf7 c2 44.f6 Bf6 45.Rf6 c1Q 46.Rd6 Ke7 47.Rh6 Qd2 48.Kf1 g4 (48...Qb4?! 49.Re6 Kf7 50.h6-+) 49.d6 Kf7 50.Rh7 Kg8-+; B) 43.Ra6+-) 41.Rc1 (better 41.b5 Bf6 42.b6+-) 41...Kf6?? (better 41...e4 42.fe4 Kd8+-) 42.b5 Kf5 (42...Ke7 43.b6 Kd7 44.Rc3+-) 43.b6 e4 44.b7 Kf4 45.fe4 Ke4 46.b8Q Kd5 (46...Be5 47.Qb5+-) 47.Qc8 (better 47.Qb5 Ke6 48.Qe8 Kd5 49.Qf7 Kc5 50.Qg7 Kc6 51.Qc3 Kd7 52.Qc8 Ke7 53.Re1 Kf7 54.Qf5 Kg7 55.Re7 Kg8 56.Qc8) 47...Ke5 48.Qc6 (48.Rd1 Kf4 49.Qc4 Bd4 50.Qd4 Kf5 51.Rf1 Ke6 52.Qe4 Kd7 53.Rf7 Kd8 54.Qa8) 48...Ke6+- 49.Qf3 (49.Qe8 Kd5 50.Qf7 Kc5 51.Qg7 c2 52.Rc2 Kd5 53.Qf7 Kd4 54.Qe6 d5 55.Kf2 Kd3 56.Qe2 Kd4 57.Qe3) 49...Be5 50.Qe2 (better 50.Rf1!? Bf4+-) 50...f6 (50...Kf6 51.Qc4 c2 52.Rf1 Bf4 53.Qc3 Ke6 54.Qc2+-) 51.Qd3 1-0. ClayPigeons (2160) - a_ndre (2075), Rated Bullet game, lichess.org, 2021.

5.e3 Nh5 6.d4 c5 7.Nf3 cd4 8.ed4 Nc6 (8...0-0 9.Qe3=) 9.Nbd2 (9.d5 Ne5 10.Ne5 de5+=) 9...Bg4 (9...Qb6 10.d5 Nd4 11.Bd4 Bd4 12.Nd4 Qd4 13.Rc1+=) 10.Be2 (better 10.d5!? Ne5 11.Ne5 de5 12.h3+=) 10...Nf4=+ 11.Bd1 (11.Bf1!? Bf3 12.Nf3=+) 11...Ng2-/+ 12.Kf1 Bh3 13.Ng1? (better 13.Ng5 Ne3 14.Ke1 Nd1 15.Rd1-/+) 13...Nf4?? (better 13...Ne3! 14.Ke2 Bg2 15.fe3 Bh1-+) 14.Nh3+/- Nh3 15.Bg4?? (better 15.Qh3 Qb6 16.Qe3+/-) 15...Nf4-/+ 16.Nf3 (16.d5 Bb2 17.Qb2-/+) 16...h5 17.Qe3?? (better 17.d5 e5 18.Rg1 hg4 19.Rg4-+) 17...hg4 18.Qf4 Qd7 (better 18...gf3 19.Qf3 Qb6-+) 19.Ng5 0-0-0?? (better 19...f6 20.Ne4 f5-+) 20.b5-/+ Nb4 21.a3? (21.Qf7 Rdf8 22.Qg6-/+ (22.Qg7 Qf5 23.Ne4 Qe4-+)) 21...Nd3-+ 22.Qd2 (22.Qf7 Rdf8 (22...Nb2?! 23.Qg7 g3 24.d5-+) 23.Qg6 Rf2 (23...Nb2?! 24.Ne6-+) 24.Kg1 Rg2 (24...Nb2?! 25.Kf2 Bd4 26.Ke2-/+; 24...Rb2 25.Qg7 Qf5 26.Qf7 Qg5 27.Qf8 Rf8 28.Re1 Ne1 29.h3 gh3) 25.Kf1 Rf8 (25...Nb2?! 26.Kg2 Bd4 27.Rae1=; 25...Rb2 26.Qd3 g3 27.Qg3-+) 26.Kg2 Nf4 27.Kg3 Ng6-+) 22...Qf5 (22...Nb2 23.Nf7 Nc4 24.Rc1-+) 23.Nf7 (23.b6 g3 24.ba7-+) 23...Qf7 (better 23...Rdf8 24.b6 Qf7 25.ba7 Kd7-+) 24.Qd3 Rdf8 25.Qe2 Rh3 (better 25...g3!? 26.Qg4 Kb8 27.Qg3 Rh3-+) 26.Kg2 (26.Ke1 Qf3 27.Qf3 Rhf3-/+ (worse 27...gf3 28.Kd2=+)) 26...Rf3 27.Rhf1 Qf4 28.Rac1 (better 28.Bc1!? Qf5 29.Bb2-/+) 28...Rh8-+ (28...Bd4 29.Bd4 Rh3 30.Rh1 Qd4 31.c5 dc5 32.Rc5 Qc5 33.Qg4 Kb8 34.Kh3 Rf2 35.Qg3 e5 36.Rc1 Qc1 37.Qf2 Qa3 38.Kg4-+) 29.Rh1 Rfh3 30.Rc3?? (30.Rcg1-+) 30...Rh2 31.Rh2 (31.Kg1 Rh1 32.Kg2 R8h2) 31...Rh2 (31...Qh2 32.Kf1 Qh1) 32.Kf1 Rh1 33.Kg2 Qh2 0-1. ClayPigeons (2155) - shacolefou (2145), Rated Bullet game, lichess.org, 2021.

4.Nd2 e5 5.Ngf3 Be7 6.g3 0-0 7.Bg2 c6 8.c4 Qc7 9.a4 Rb8 10.b5 a5 11.0-0 Qb6 12.Rb1 c5 13.Bc3 Qc7 14.b6! Qd8 (14...Nb6 15.Ba5 Decoy (15.Ba5 Interception)) 15.Ba5 d5 (15...Ra8!? 16.Bc3 Nb6+=) 16.cd5+/– Nd5 17.Nc4 Bf6 18.Bd2 Re8 19.a5 e4 20.de4 Re4 21.Nd6 Re6 22.Nb5 h6 23.Nh4 Ne5 24.Bd5 Bh4?? (better is 24...Qd5!? 25.Nc7 Qc6 26.Ne6 Be6+/–) 25.Bf4 (25.Be6 Be6 26.gh4 Qh4+-) 25...Qf6? (25...Bf6+-) 26.Be6 (26.gh4?! Qf4 27.Be6 Be6+/–) 26...Be6 27.Qd6 Nc4 28.Qb8 Kh7 29.gh4 Qh4 30.Bg3 Qe4 31.Nd6 Qe2 32.Nc4 Bc4 33.Qe5 Qf3 34.Qf4 Qd5 35.Rbd1 Qe6 36.Rfe1 Be2 37.Rd2 1–0. Gueler Berdasco,Martin (1920) – Jimenez Perez,Federico, San Sebastian de los Reyes ESP, 2012.

4.Nd2 g6 5.e3 Bg7 6.Be2 0-0 7.h4 b6 8.c3 Bb7 9.e4 d5 10.h5 g5 11.Ngf3 h6 12.Nd4 de4 13.Nf5 ed3 14.Bd3 Bg2 15.Rg1 Bd5 16.Ng7 Kg7 17.f4 Nh7 18.c4 f6 19.cd5 a5 20.fg5 hg5 21.Nf3 ab4 22.Ng5 Ng5 23.Rg5 Kh6 24.Rg6 Kh7 25.Rf6 Kg8 26.Qg4 Kh8 27.Rh6 1–0. ArgosZgZ (1750) – Khuzwayo (1745), lichess.org, 2020.

4.e4 e5 5.Nf3 Be7 6.Nc3 0-0 7.Nd5 c6 8.Ne7 Qe7 9.Ng5 h6 10.Nf3 c5 11.bc5 Nc5 12.Nh4 a5 13.Nf5 Bf5 14.ef5 b5 15.Be2 Na4 16.Bc1 Nc3 17.Qd2 b4 18.0-0 Rac8 19.Bb2 e4 20.de4 Nfe4 21.Qd3 Nf6 22.Bc3 Rc3 23.Qd2 d5 24.Rfe1 Ne4 25.Qf4 Qf6 26.Bd3 Nc5 27.a3 Nd3 28.cd3 ba3 29.d4 Rfc8 30.Qe5 Qe5 31.de5 R8c6 32.e6 fe6 33.fe6 Kf8 34.e7 Ke8 35.Rab1 Rc8 36.Rb5 R3c5 37.Rb3 a2 38.Rf3 Kd7 39.Rf8 Re8 40.Rf3 Rb5 41.Ra3 Re7 42.Kf1 Re1 43.Ke1 Kd6 44.Ra2 d4 45.Ke2 Rd5 46.Kd3 g5 47.f3 Ke5 48.g3 h5 49.h3 Kf5 50.g4 hg4 51.hg4 Kf4 52.Kc4 (time, 1–0). Nautiluschess – Desperado, ICS blitz, 2001.

4.e4 g6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0-0 5.e4 d6 6.Be2 Nbd7).

4.Nd2 Bg7 5.c4 0-0 6.Qc2 c5 7.bc5 dc5 8.Ngf3 b6 9.g3 Bb7 10.Bg2 Nc6 11.0-0 Rb8 12.a3 e6 13.e3 Qe7 14.d4 cd4 15.ed4 Rfc8 16.Qd3 Rd8 17.Qe2 Qc7 18.Rac1 Ne7 19.c5 Nf5 20.cb6 Qb6 21.Nc4 Qa6 22.Qc2? Bf3 23.Bf3 Nd4 24.Bd4 Rd4 25.Ne5 Nd5?? 26.Qc5?? Be5–+ 27.Rfe1 Bg7 28.Kg2 Qb6 29.Qc2 Qb2 30.Re2 Qc2 31.Rec2 Rd3 32.a4 Rbb3 33.Be4 Rdc3 34.Rc3 Rc3 35.Rd1 Ra3 36.Bd5 ed5 37.Rd5 Ra4 38.Rd8 Bf8 39.h4 a5 40.f3 h5 41.Kh3 Kg7 42.g4 Ra3 43.Kg3 a4 44.gh5 gh5 45.Rd5 Kg6 46.Rg5 Kh6 47.Rf5 Bd6 48.Kf2 Kg7 49.Rh5 Ra2 50.Ke3 Ra3 51.Ke4?? f6 52.Rb5 Be5 0–1. sagonek – hvezdickae, kurnik, 2011.

4.Nd2 Bg7 5.e3 0-0 6.Ne2 Nc6 7.b5 Ne5 8.Ng3 Bg4 9.Qc1 c6 10.d4 Ned7 11.c4 e5 12.bc6 bc6 13.h3 Be6 14.Bd3 Rb8 15.Bc3 Nb6 16.a4 Nfd5 17.cd5 Nd5 18.Bb2 Qe7 19.Ba3 Rb3 20.Bc4 Rb6 21.de5 Be5 22.Nge4 Ba1 23.Qa1 Rfb8 24.Bd6 Qd6 25.Nd6 Rb1 26.Nb1 Rb1 27.Qb1 Kg7 28.Qb2 Kf8 29.Qe5 Ke7 30.Nc8 Kf8 0–1. ArgosZgZ (1615) – jaglff (1615), lichess.org, 2020.

4.e3 Bg7 5.Nf3 0-0 6.Be2 Nbd7 7.c4 c6 8.Nc3 a5 9.b5 c5 10.0-0 b6 11.Nd2 Bb7 12.Bf3 Qc7 13.Bb7 Qb7 14.Qc2 Ne5 15.f4 Neg4 16.Rae1 e6 17.Nf3 h6?? 18.h3+- h5 19.hg4 hg4 20.Ng5 Nh5 21.g3! Ng3 22.Qh2 Nh5 23.Re2 Rae8 24.Nce4 Bb2 25.Rb2 f6 26.Nd6 Qd7 27.Ne8 fg5 28.fg5 Rf1 29.Kf1 Qe8 30.Qe5 Qf7 31.Rf2 (31...Qe8 32.Qd6+-) 1–0. orane – Hoppi23, caissa.com, 2007.

4.c4 Bb7 5.Nd2 e6 6.f3 Be7 7.e4 0-0 8.Bd3 c5 9.bc5 b5?? (better is 9...dc5!? 10.d5 Re8=) 10.cb5 dc5 11.dc5?? (better is 11.Ne2+/–) 11...Qd3–/+ 12.Nb3? (better is 12.Qb3!? Qd8 13.c6+=) 12...Qe3 (better is 12...Qb5!? 13.Rb1 Nc6–+) 13.Qe2 Qg5 (13...Bc5!? 14.Qe3 Be3 15.Bf6 gf6–+) 14.Nh3 Qh4 15.Qf2 Qh6 16.0-0 Nbd7 17.c6+/– Bc5?? 18.Nc5+- Nc5 19.cb7 Nd3?? 20.Qe2 Nb2 21.Qb2 Rab8+/– 22.a4 Rb7 23.Qc1 Qh4 24.Qf4 Qh5 25.Rac1 Ra8 26.Rfd1 h6 27.Rc7 Rb6 28.g4 Qg6 29.g5 hg5 30.Qg5+- a6 31.Qg6 fg6 32.Ng5 ab5 33.Rdc1 ba4?? 34.Rc8 Ne8 35.Ra8 Kf8 36.Rcc8 Rb1 37.Kg2 Ke7 38.Re8 Kf6 39.h4 Rb2 40.Kg3 Ke5 41.Re6 Kd4 42.Rd8 Ke3 43.Rg6 a3 44.Rg7 a2 (44...a2 45.Ra7 Rb1 46.Ra3 Ke2 47.Ra2 Ke3 48.Ra3 Ke2 49.h5 Rd1 50.Rd1 Kd1 51.h6 Kc1 52.h7 Kb1 53.h8Q Kc2 54.Qc3 Kd1 55.Ra1 Ke2 56.Re1#). typ48 – libero81, kurnik, 2012.

4.e3 Bb7 5.Nf3 e6 6.Be2 g6 7.Nbd2 Bg7 8.0-0 0-0 9.c4 c5 10.bc5 bc5 11.dc5 dc5 12.Rb1 Qc7 13.Qc2 Nbd7 14.Rfd1 Rac8 15.Bd3 Bc6 16.Ne4 a5 17.Nf6 Nf6 18.Nd2 a4 19.Ne4 Be4 20.Be4 Ne4 21.Qe4 f5? 22.Qe6+- Kh8?? 23.Rd7 Qd7 24.Qd7 Bb2 25.Rb2 Rcd8 26.Qd8 Rd8+/– 27.g3 Rc8? 28.Rd2 Rc7? 29.Kg2 Kg7 30.Kf3 g5 31.h3 h5 32.Rd6 g4 33.hg4 hg4 34.Kf4+- Rf7? 35.Rc6 1–0. Fournier,Frederic – jespat, Active, 2007.

4.c4 Nbd7 5.Nf3 g6 6.Nc3 Bg7 7.e3 0-0 8.Be2 b6 9.0-0+= Bb7 10.Qb3 a6 11.a4 Qc7 12.Rfc1 Rac8 13.a5 ba5 14.ba5 Rb8 15.Qa3 c5 16.d5 Bc8 17.Rab1 Ne5 18.Ne5+= de5 19.e4 Bd7 20.Ba1 Rfc8 21.Bd3 Ne8 22.Rb8 Rb8 23.Rb1 Rb1 24.Nb1 Nd6 25.Bc3 f5 26.f3 Nb7 27.Nd2 Bh6 28.Kf2 Bg7 29.Nb3 f4 30.Qa1 g5 31.Bc2 Nd6 32.Nd2 Nb7 33.Nb3 Nd6 34.Nd2 Nb7+/– 35.Ke2 g4 36.Nb3 Qd6 37.Kf1 gf3= 38.gf3 Bh3 39.Ke2+= Qg6 40.Qe1 Qg2 41.Qf2 Qh1 42.Be1 Bg2 43.Nc5 Nc5=+ 44.Qc5 Bf3 45.Kd2 Be4 46.Qc8 Kf7 47.Qe6 Kf8 ½–½. Meier,Franz – Aspstrom,Yngve, Cattolica op, 1992.

4.c4 Bf5 5.e3=.

4.e3 g6 5.Nf3 Bg4 6.Nbd2 Bg7 7.a4 a5 8.b5 Nbd7 9.h3 Bf3 10.Nf3 0-0 11.Bd3 Qc7 12.0-0 Rfe8 13.Rc1 e5 14.Nd2 e4 15.Be2 Nd5 16.c4 Nb4 17.Qb3 c5 18.Rcd1 f5 19.f4 Nf8 20.dc5 dc5 21.Nb1 Rad8 22.Bg7 Qg7 23.Nc3 Kh8 24.Nd5 Nd5 25.Rd5 Rd5 26.cd5 b6 (26...Rd8 27.Rc1 b6 28.Bc4=) 27.d6 Rd8 28.Qd5 h5 (28...Qc3!? 29.Kf2 Qf6=) 29.Rd1+/– Kh7 30.Qe5 Nd7 31.Qe7 Rb8 32.Bc4 Kh6 (32...Rb7!?+/–) 33.g4!+- fg4 (33...fg4 34.Qg5 Double attack (34.Qe4 Deflection; 34.Qg5 Decoy); 33...hg4 34.Qh4 Mate attack) 34.hg4 (34.Qe4?! gh3 35.Bf1 Nf6=) 34...Nf8 (34...Kh7 35.Be6 (35.Qe4?! Nf6 36.Qe6 Ng4+-) 35...Rb7 36.Bf7+-) 35.g5 Kh7 36.Rd5 (36.Bf7 Qc3 37.Kf1 c4+-) 36...Kh8? (36...Nd7 37.Qe4 Qa1 38.Kh2+-) 37.Re5 (worse is 37.Qe4 Nd7+-) 37...Rb7 (37...h4+-) 38.Qg7 Kg7 (38...Rg7 39.Re8 Rd7 40.Rf8 Kg7 41.Rf7 Rf7 42.Bf7 Kf7+-) 39.Re7 Re7 40.de7 (40.de7 Nd7 41.e8Q Nf6 42.Qf7 Kh8 43.Qf8 Kh7 44.Qh6) 1–0. Cirpii,Alexandru – Liapin,Vladimir, Geller Memorial op–B 4th, 2008.

4.Nf3 Bg4 5.e3 e6 6.Be2 d5 7.c3 a5 8.ba5 Qa5 9.Qb3 b5 10.0-0 Bf3 11.Bf3 Bd6 12.Nd2 0-0 13.Rfe1 Na6 14.a4 b4 15.c4 Rfc8 16.Rac1 (16...Rcb8 17.cd5 cd5 18.Rc6=). market – NN, GameColony.com, 2002.

4.a3 e6 5.c4= a6 (5...g6 6.Nf3=) 6.Nf3 h6 (6...Be7 7.e3=) 7.e3+= Be7 8.Bd3 0-0 9.0-0 e5 (9...d5 10.Nc3+=) 10.de5 de5 11.Ne5 (worse 11.Be5 a5 12.b5 Ne5 13.Ne5 Qd6=) 11...Ne5 12.Be5 Be6 (12...a5 13.b5+/-) 13.Qc2 Qe8 (13...Ng4!? 14.Bf4 Bd6+/-) 14.Nc3+- c6 15.Rfd1 Rd8 (15...Ng4 16.Bg3+-) 16.Ne4 (16.h3 c5+-) 16...Ne4+/- 17.Be4 f5 18.Bf3 Qg6 19.Qc3 Rde8 20.Rd2 Bg5 (20...Bf6 21.Bf6 Qf6 22.Qf6 Rf6 23.Rd4+-) 21.Rad1 f4 (21...Bf6 22.Bf6 Qf6 23.Qf6 Rf6 24.Rd4+-) 22.ef4 (22.e4!? Bf6 23.Bf6 Qf6+-) 22...Bf4+/- 23.Bf4 Rf4 24.Rd8 (24.c5 Rc4 25.Qb2 Rf4+/-) 24...Ref8 (24...Rc4 25.Qe3 Rf8 26.Rf8 Kf8 27.Qa7+-) 25.Rf8 Rf8 26.c5 Bg4 27.Bg4 Qg4 28.Rf1 (28.f3 Qf5+/-) 28...Rf6 (28...Qe2 29.f4+/-) 29.Qe3 (29.Re1 Qd7+/-) 29...Re6 30.Qd3 Qe2 31.Qd8 Kh7 32.Qh4 (32.h3 Re7+/-) 32...Re4 (32...Re5 33.Qf4+=) 33.Qg3 (33.Qh3 Kg6+/-) 33...Rd4+= 34.Qc7?? (better 34.h3 Rd3 35.Qc7 Ra3 36.Qb7+=) 34...Rd1-+ 35.Rd1 Qd1 0-1. Bendega (2045) - musa2244 (2000), lichess.org, 2021.

4.a3 g6 5.Nf3=.

4.b5 Nb4 5.c3=.

4.b5 Nb8 5.c4 c5 (5...a6 6.Nf3=) 6.e3 (6.dc5 Nbd7 7.cd6 ed6+=) 6...Bf5 (6...cd4 7.ed4 Nbd7 8.Nf3+=) 7.Nc3 (7.dc5 dc5 8.Qd8 Kd8+=) 7...g6 (7...cd4!? 8.ed4 Qc7=) 8.Nf3 (8.dc5 dc5 9.Qd8 Kd8+/–) 8...b6 (8...Nbd7!?+=) 9.Be2 Bg7 10.a4 (10.Nh4 Be6+/–) 10...0-0+= 11.Nh4 Bd7? (better is 11...Be6+=) 12.Bf3+- Na6 (12...g5 13.Ba8 gh4 14.Bf3+-) 13.ba6 (13.Ba8 Nb4 14.Bc6 cd4 15.ed4 Nc6 16.bc6 Bc6+-) 13...Rc8 14.Bb7 Rb8 (14...cd4 15.ed4 Rc4 16.0-0+-) 15.Nf3 (15.0-0 Bc8+-) 15...Bc8 16.Bc8 Qc8 17.Qb3 Qa6 18.d5 1–0. Dimitrov,Dimitar (1945) – Tilev,Emil, 2016.

4.Nf3 b6 5.c4 Bb7 6.e3 g6 7.Be2 Bg7 8.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6 6.Be2 Bb7 7.0-0 d6 8.d4 Nbd7).

4.Nf3 b6 5.Nbd2 c5 6.c3 Bb7 7.e3 g6 8.Qa4 Qc7 9.c4 cb4 10.Qb4 Bg7 11.Rc1 0-0 12.Be2 Rac8 13.0-0 Ne4 14.Ne4 Be4 15.Nd2 Ba8 16.f4 Nf6 17.Bf3 Bf3 18.Rf3 Qd7 19.e4+= e5 20.de5 de5 21.Be5 Ng4 22.Bg7+/– Kg7 23.Qc3 Kg8 24.h3 Nh6 25.Qe3 f5 26.e5 Rfd8 27.Nb3 Qa4 28.Qe2 Qc6 29.Re3 Qe6 30.Rd3 Nf7+/– 31.Nd4 Qe7 32.Nb3 Nd6 33.Rcd1 Ne4 34.Rd8 Rd8 35.Rd3 Rc8 36.Qd1 Rc7 37.Rd8 Kg7 38.Qd4 Qh4= 39.e6 Kh6 40.Nd2 Qe1 41.Nf1 Ng3–/+ 42.Qd1 Ne2 43.Kh2 Qf2 44.Nd2 Qf4 45.Kh1 Ng3 46.Kg1 Qe3 47.Kh2 Ne2 48.Nf3 Qf4 49.Kh1=+ Ng3 50.Kg1 Rc4 51.Rd4?? Qe3 52.Kh2–/+ Rc1?? 53.Rh4+- Nh5 54.Qd8 Qc3 55.Qg5 Kg7 56.Qe7 Kh6 57.Qf8 Qg7+- 58.e7 Rc8 1–0. Bernardt,Rainer Joerg (1805) – Schuler,Georg (1830), Wuerttemberg–ch Seniors, 2003.

4.Nf3 e5 5.c4=+.

4.Nf3 g6 5.e3 Bg7 6.Be2 0-0 7.0-0 Re8 (7...c5 8.Qd2=) 8.a3 a6 9.c4 b6 10.Qb3 (10.Nc3 e5+=) 10...c5 11.Nc3 Bb7 (11...e5 12.de5 de5 13.Rfd1+=) 12.Rad1 (12.dc5 bc5 13.Rfb1 Rb8+=) 12...e6 (12...cd4 13.ed4 Rc8 14.Rfe1=) 13.Na4 (13.dc5!? dc5 14.bc5 Nc5 15.Rd8 Nb3 16.Rd6+=) 13...Qc7 14.Nc3 (14.Rfe1 cb4 15.Qb4 Rac8=) 14...cd4 (14...cb4 15.ab4 Rac8 16.b5=) 15.Nd4 (15.Rd4 Rec8=) 15...d5 (15...Rac8 16.f4=) 16.Rc1 (16.cd5 Nd5 17.Rc1 Qd6+=) 16...dc4= 17.Bc4 (better is 17.Qc4 Qc4 18.Bc4=) 17...Ne4?? (better is 17...Ng4 18.g3 Qe5=+) 18.Ne4+- Be4 19.Be6! Qb7? (19...fe6 20.Rc7) 20.Bf7 Kh8 (20...Kf8 21.f3 Bf5 22.Bd5+-) 21.f3 Bd3 (21...Rec8 22.fe4 Rc1 23.Rc1 Rc8+-) 22.Qd3 (better is 22.Bd5 Qa7 23.Nc6+-) 22...Ne5 23.Qb3 Nf7 (23...Qf7 24.Qf7 Nf7+-) 24.Ne6 (24...Re6 A) 25.Qe6?! Bb2 26.Rc2 Ng5+/– (26...Ba3?? 27.Rd1 Qb8 28.Qf7+-); B) 25.Bg7 Kg7 26.Qe6+-) 1–0. Sebald,Ralph – Weise,M, Dortmund Ruhrgebiet–ch U15, 1996.

4.d5 c6 5.c4 (5.Bf6 gf6 6.Nc3 Bg7=) 5...cd5 (5...e5 6.f3=+) 6.cd5 a5 (6...e6 7.Nc3=) 7.a3 (7.Bf6!? gf6 8.b5=) 7...ab4=+ 8.ab4 Ra1 9.Ba1 Qb6 10.Qb3 (10.Qa4 Bd7 11.Qa8 Qc7=+ (11...Qb4? 12.Nd2 Bf5 13.Qb8 Kd7 14.Ngf3+-)) 10...Nbd7 (10...Nd5 11.Qd5 Bb1 12.Bc3–/+) 11.e3 (11.Bf6 Nf6 12.Qa4 Kd8=) 11...g6 (better is 11...Bb1!? 12.Bd4 Nc5–/+) 12.Nf3 (12.Nd2 Bg7+=) 12...Bg7 (12...e5 13.de6 fe6 14.Na3=) 13.Be2 (13.Bc4 0-0=) 13...0-0 (13...Nc5 14.Qc4=) 14.0-0 (14.Bd4 Qc7 15.Nc3 Nb6=) 14...Ra8 (14...Nc5 15.Qc4 Na6=) 15.Na3 (15.Nbd2!?=) 15...Nd5 (15...Be4 16.Bc4–/+) 16.Bg7=+ Kg7 17.Nc4? (better is 17.Qd5 Ra3 18.Nd4=+) 17...Qb4–+ 18.Qd1 (18.Qb4 Nb4 19.Nd4–+) 18...Nc3 19.Qd2 Ne2 20.Qe2 Ra4 21.Nfd2? Nc5 22.Rc1 Bd3 23.Qg4 b5 24.Qd4 e5 25.Qd6 bc4 26.Qe5 Kg8?? 27.Qe8= Kg7 28.Qe5 Kh6 29.Qf4 g5 30.Qf6 Bg6 31.h4 Qd2?? 32.hg5+= Kh5 33.g4?? Kh4–+ 34.Rf1 Ne4 35.Qf4 Ng5 36.Qg3 1–0. STUKA125(C) (1940) – Eralos (1965), Buho21.com, 2006.

4.d5 e6 5.Nc3=+.

4.Nf3 Nbd7 5.e3 (5.Nc3 d5=) 5...Bg4 (5...e6 6.c4+=) 6.Be2 (6.h3 Bh5+=) 6...g6 (6...e6 7.c4+=) 7.h3+= Bf3 (7...Be6 8.e4 c6 9.Nc3+=) 8.Bf3+/– (worse is 8.gf3 Bg7=) 8...c6 9.0-0 Bg7 10.c4 0-0 11.Nd2 Rc8 (11...Qc7 12.Qc2+/–) 12.Qa4 White plans b5 (12.Qc2 e5+/–) 12...a6 13.Rac1 (13.Qc2 Re8+=) 13...Re8 (13...e5 14.c5+=) 14.Rfd1 (14.b5 cb5 15.cb5 Qb6+=) 14...e6 (14...e5 15.Qc2+=) 15.b5 (15.Qb3 e5+=) 15...Nb6+= 16.Qb3 ab5 17.cb5 d5 18.Ba3 (18.a4 Nbd7+=) 18...Nbd7 (18...Nfd7 19.Be2+=) 19.Bd6 (19.e4 de4 20.Be4 cb5 21.Bb7 Rc1 22.Bc1 Qb6=) 19...Bf8 (19...e5 20.bc6 bc6 21.Qb7=) 20.Bf8 Nf8 (20...Rf8 21.e4=) 21.Qb4 (21.a4 Qa5+=) 21...Qb6 (21...N8d7 22.a4=) 22.a4 Ra8 23.Nb3 White plans a5 (23.e4 cb5 24.ab5 Ra2+=) 23...Rec8 24.Be2 Kg7? (better is 24...cb5 25.a5 Qd8+=) 25.a5+- Qd8 26.b6 (26.a6!? ba6 27.b6 Rcb8+-) 26...Rcb8 27.Nc5 (27.a6 N8d7 28.a7 Rc8+/–) 27...Ne4 (27...N8d7!? 28.Nd7 Nd7+/–) 28.Ne4+- de4 29.Ra1 (29.a6!? Nd7 30.a7 Rc8+-) 29...Nd7+/– 30.Qd6 (30.Rdb1 Qf8+/–) 30...Nf6 31.Qe5 Qd5 32.f4 (better is 32.Qc7!?+/–) 32...Qe5= 33.de5 Nd5 34.Kf2 Nc3 (34...f6 35.ef6 Kf6 36.Rdc1=) 35.Rd7 (better is 35.Rd2+=) 35...Ne2? (better is 35...Nd5=) 36.Ke2+- Ra6 (36...h6 37.Kd2+-) 37.Ra4 (37.Rc7 Kg8+-) 37...h6 (37...Kf8!?+-) 38.Kd2 Raa8 (38...g5 39.fg5 hg5 40.Kc3+-) 39.Kc3 g5 (39...Ra6 40.Kd4+-) 40.Kd4 Rd8 41.Rd6 (41.Rd8 Rd8 42.Ke4 gf4 43.ef4 c5+-) 41...Rd6 (41...gf4 42.ef4 e3 43.Ke3 Rd6 44.ed6 Kf8+-) 42.ed6 f5? (42...gf4 43.a6 f3 44.gf3 ef3+-) 43.Ke5 (better is 43.a6 ba6 44.fg5+-) 43...Kf7 44.g3 (44.a6 ba6 45.fg5 hg5 46.Rc4+-) 44...c5?? (44...gf4 45.gf4 Ra6+-) 45.a6! ba6 (45...Ra6 46.Ra6 Combination; 45...ba6 46.fg5 Decoy) 46.b7 Rb8 47.Ra6 Rb7 48.Rc6 c4 (48...Rb1+-) 49.Rc7 (49.Rc7 Kg6 50.Rb7 h5 51.d7 gf4 52.d8Q h4 53.gf4 c3 54.Qg5) 1–0. Silva,Janderson Rossi Da (1740) – Souza,Bruna Garcia De, Championship Paranaense Absoluto de Xad, 2015.

4.Nc3 Bg7 5.a3 0-0 6.Nf3 Nbd7 7.e3 c5 8.b5 a6 9.ba6 ba6 10.Be2 Rb8 11.Rb1 Qa5 12.0-0? Bb7 13.Nd2 cd4 14.ed4 Rfc8 15.Nb3 Qg5 16.Bf3 Nb6 17.Bb7 Rb7 18.Qd3 Nc4 19.Bc1 Qf5 20.Qf5 gf5 21.Na4 Nd5 22.Bb2? Nb2–+ 23.Rb2 Rc4 24.Nd2 Rb2 25.Nc4 Rc2 26.Ne3 Ne3 27.fe3 Bh6 28.Re1 Ra2 29.Nb6 Ra3 30.Kf2 Kg7 31.h3 Rb3 32.Nc4 Rc3 33.Na5 Kf6 34.g3 0–1. Siluk,Zygmunt (2030) – Chojnowski,Marcin (2165), Poland, 2008.

4.c4 Bg7 (--> 2.Bb2 g6 3.c4 Bg7 4.d4 d6).

4.c4 Bg7 5.Nf3 0-0 6.e3 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

4.Nd2 Bg7 5.c3 0-0 6.e4 Nbd7 7.Bd3 e5 8.Ne2 Re8 9.0-0 c6 10.Rb1 Nf8 11.f3 a5 12.a3 ab4= 13.ab4 Qc7 14.b5 Be6 15.c4 h5 16.d5+= Bd7 17.Qb3 cb5 18.cb5 g5 19.Rfc1 Qb6 20.Kf1 g4+= 21.Nc4 Qb5 22.Qb5 Bb5 23.Nd6?? Bd3–/+ 24.Ne8 Ne8 25.Ra1 Ra1 26.Ba1 Ng6 27.Rc8 Kf8 28.Kf2 Ke7 29.Nc3? Ba6 30.Bb2 Nd6 31.Rc7?? Kf6 32.Ba3 Bf8 33.Bd6 Bd6–+ 34.Rd7 Bc5 35.Kg3 gf3 36.gf3 Nf4 37.Na4 Bd4 38.Rd6 Kg7 39.Nb6 Bc5 40.Rd7 Bb6 41.d6 Kg6 42.Re7 Kg5 43.Rf7?? h4# 0–1. mic (2135) – gtan (2365), net–chess.com, 2007.

4.e3 Nd5=.

5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 d6 5.Nf3).

5.e3 0-0 6.Be2 Nbd7 7.0-0 c6 8.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7 8.d4).

4.a3 ab4 5.ab4 Ra1 6.Ba1 c5 7.bc5 e5 (7...dc5 8.Bc4=) 8.cd6 Bd6 9.c4 (9.Nf3 Nc6+=) 9...Bf5 10.Nc3 0-0 11.Nf3 Nc6 12.Nh4 Be6 13.d3 (13.Nf3 Bg4+=) 13...Ng4 (13...Bb4 14.Qc2=+) 14.Nf3 Qf6 (14...Bb4 15.Qc2=) 15.h3 Nf2?? (better 15...Nh6+=) 16.Kf2+- Nd4 (16...Qe7+-) 17.Ne4 Qf3 (17...Qe7 18.ed4 ed4 19.Nd6 Qd6 20.Bd4 Rd8+-) 18.gf3 Bc5 19.ed4 (better 19.Nc5!? Nc6+-) 19…ed4 1-0. ClayPigeons (2040) - florin38 (2045), Rated Bullet game, lichess.org, 2020.

4.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3).

4.d4 ab4-/+ 5.c4 bc3 6.Nc3 Nc6 7.Nf3 e5 8.Bc4 (8.Bb5 Bd7=+) 8...ed4 (8...e4 9.Nd2-/+) 9.Nd4 d5 10.Nc6 bc6 11.Bb3 Be6 12.0-0 Bd6 13.Bc2 Bh2 (13...Qe7!?-/+) 14.Kh2= Ng4 15.Kg1?? (better 15.Kg3 Qd6 16.Kf3 Nh2 17.Ke2 Nf1 18.Kf1=) 15...Qh4-+ 16.Re1 (16.Qg4 Qg4 17.a4-+) 16...Qf2 17.Kh1 Qh4 18.Kg1 d4! 19.ed4 (19.Qd4 Qf2 Double attack; 19.ed4 Qh2 Combination) 19...0-0 (19...Qh2 20.Kf1 Qh1 21.Ke2 Qg2 22.Kd3 Nf2 23.Kd2 Nd1 24.Kd1-+) 20.Qd3 (20.Qg4 Qg4 21.Re4-+) 20...g6 (better 20...Qh2 21.Kf1 Qh1 22.Ke2 Qg2 23.Kd1 Nf2 24.Kc1 Nd3 25.Bd3-+) 21.Qh3?? (21.Re4 Qf2 22.Kh1-/+) 21...Qf2-+ 22.Kh1 Nf6 (better 22...Qc2 23.Re2 Nf2 24.Kh2 Qe2 (24...Nh3?! 25.Rc2 Nf4 26.Bc1-/+; 24...Bh3 25.Rc2 Bg2 26.Kg2+=) 25.Ne2 Nh3 26.gh3 Ba2-+) 23.Re6 (23.Re2!? Qe2 24.Ne2 Bh3 25.gh3=) 23...fe6=+ 24.Qe6 Kg7 25.Bb3?? (25.Rc1 Rae8 26.Ne4 (26.Qc6 Re1 27.Re1 Qe1 28.Kh2 Ng4 29.Kh3 Qe3 30.Qf3 Rf3 31.gf3 Qf3 32.Kh4 Nf2 33.Bf5 Qf4 34.Bg4 Qg4) 26...Ne4 27.d5 Kh6 28.Qh3 Kg5 29.d6 cd6 30.Kh2-+) 25...Rae8-+ (25...Qb2?! 26.Qe7 Kh8 27.Rf1 Qc3 28.Rf6 Qc1 29.Kh2 Qh6 30.Kg1-+) 26.Qc6 (26.Qh3 Re3 27.Qe3 Qe3 28.d5-+) 26...Re1 (26...Qb2?! 27.Rd1 Qf2 28.Be6-+) 27.Re1 Qe1 28.Kh2 Ng4 29.Kh3 h5 (29...Qe3 30.Qf3 Rf3 31.gf3 Qf3 32.Kh4 Nf2 33.Be6 Qf4 34.Bg4 Qg4) 30.Qd7-+ Kh6 (30...Kh8 31.Bf7 g5 32.Qg4 hg4 33.Kh2 Rf7 34.d5 Rh7) 31.Nd5 (31.Bf7 Qe3 32.g3-+) 31...Rf1 (31...Qh1 32.Kg3 Qh2) 32.Bc1-+ Qc1 33.Nf6 Rf6 (33...Rh1 34.Kg3 Qe3) 34.Qd5 (34.Qg4 hg4 35.Kh2 Qf4 36.Kh1 g3 37.Bc4 Qc1 38.Bf1 Rf1) 34...Qh1 35.Kg3 Qh2 0-1. Kramikaze (1785) - MeikeSchlecker (2230), Rated Bullet game, lichess.org, 2014.

4.c4 Nc6 5.b5 ab5 6.cb5 Na7 7.h3 Bd7 8.a4 c6 9.Qb3 g6 10.Nf3 Bg7 11.Nc3 0-0 12.Be2 Qb6 13.a5 Qd8 14.b6 Nc8 15.d4 e6 16.0-0 d5 17.Ba3 Re8 18.Ne5 Bf8 19.Bc5 Nd6 20.f3 Bc8 21.Bd3 Nd7 22.Nd7 Qd7 23.f4 f6 24.Qc2 Kg7 25.Rf2 e5 26.fe5 fe5 27.de5 Nc4 28.Bf8 Rf8 29.Bc4 dc4 30.Rf8 Kf8 31.Rf1 Kg7 32.Qf2 Qf5 33.Qb2 Qd3 34.Qf2 Bf5 35.g4 Rf8 36.gf5 Rf5 37.a6 Rf2 38.Rf2 ba6 39.b7 Qd8 40.Ne4 Qb6 41.Nd6 Kh6 42.Kg2 c3 43.Rc2 Qb3 44.Rc3 Qc3 45.b8Q Qe5 46.Qf8 Kh5 47.Qf4 1–0. efektar (1955) – magda1500 (1805), kurnik, 2012.

4.Nf3 b5 5.d4 Bb7 (5...d5 6.a4 ba4 7.Ne5+=) 6.a4 Bf3? (better 6...ba4!? 7.Ra4 e6+=) 7.Qf3+- (7.gf3?! ba4 8.Bd3 c6+=) 7...Nbd7 (7...d5 8.ab5 c6 9.c4+-) 8.ab5 Nb6 (8...d5 9.ba6 e5 10.de5 Bb4 11.Ke2+-) 9.ba6 d5 (9...Qd7 10.c4+-) 10.Bb5 Nfd7 11.a7 (better 11.Bc6 Rc8+-) 11...Nc4? (11...Nc8 12.Qd5 Ra7 13.Ra7 Na7+-) 12.Bc3 (12.Qd5!? Ncb6 13.Qf3 e6+-) 12...e6 13.Bc6 Bd6 14.Ba8 (14.e4 Ncb6+-) 14...Qa8 15.Nd2 Nd2 16.Bd2 0-0 (16...Nb6 17.0-0+-) 17.0-0 (17.c4 Nf6+-) 17...Nb6 18.b5 (18.Rfe1!? Qb7+-) 18...Nc4 19.Bc3 Rc8 (19...Na3 20.Qe2 Qb7 21.Bb2+-) 20.Rfb1 (better 20.e4 de4 21.Qe2 Nb6+-) 20...c6 (20...Qb7+-) 21.b6 Nb6 (21...Qb7+-) 22.Rb6 Bc7 23.Rbb1 Bd6 24.Bb4 Bc7 25.Bc5 Bd8 (25...Re8 26.c4!+-) 26.c4! Bf6 (26...dc4 27.Ra4 Decoy) 27.cd5 cd5 28.Qf4 Bd8 29.Rb8 Rb8 30.Qb8 (30.Qb8 h6 31.Qa8+-) 1-0. sezwho (2010) - rj1997 (2010), Rated Bullet game, lichess.org, 2014.

4.Nf3 Nc6 5.b5 ab5 6.Bb5 Bd7 7.a4 g6 8.Bf6 ef6 9.0-0 Bg7 10.d4 0-0 11.c3 h6 12.Nbd2 b6 13.h3 f5 14.Nh2 Ne7 15.Bd7 Qd7 16.c4 Nc6 17.Rb1 Na5 18.Ndf3 g5 19.Nd2 f6 20.Ndf3 g4 21.hg4 fg4 22.Nh4 h5 23.g3 f5 24.Qd3 Nc6 25.d5 Ne5 26.Qc2 Qa4 27.Qa4 Ra4 28.Rfc1 Rc4 29.Rc4 Nc4 30.Rc1 b5 31.Ng6 Re8 32.Nf4 Bb2 33.Rc2 Ba3 34.Ne6 Re7 35.Nf1 Bc5 36.Nc5 dc5 37.Nd2 Nd2 38.Rd2 c4 39.Rb2 c6 40.dc6 Rc7 41.Rb5 Rc6 42.Rf5 c3 43.Rd5 c2 44.Rd8 Kf7 45.Rd7 Ke6 46.Rh7 c1Q 47.Kg2 Rc2 48.Rh5 Qd2 49.Rh6 Kf5 50.Rh5 Kg6 51.Rh8 Qf2 52.Kh1 Rc1 0–1. joaquimbage – szura123, kurnik, 2012.

4.Nf3 Bg4 5.Be2 e5 6.0-0 Be7 7.Nc3 0-0 8.d4 ed4 9.Nd4= Be2 10.Qe2 Qd7 11.Qf3 c6 12.Rad1 d5 13.Nf5 Bb4 14.a3 Ba5 15.Ng7! Kg7?? 16.Nd5+- (16.Nd5 Bd8 17.Nf6+-) 1–0. kehrsam – Skean Du, ChessWorld.net, 2006.

4.Bf6 gf6 5.h3 Bg7 6.c3 e5 7.g4 Be6 8.Bg2 Nc6 9.Qa4 Bd7 10.Qc2 h5 11.Qd1 hg4 12.hg4 Rh1 13.Bh1 Qe7 14.a4 Rb8 15.Qe2 f5=+ 16.gf5 Bf5 17.Bc6+= bc6 18.Qa6 Bd7 19.Qf1 Ra8 20.Qg2 Qf6 21.b5 Rb8? 22.bc6+/– Bf5 23.Na3 Bf8 24.Nb5+- Kd8 25.e4 Be6 26.d3 Rb6 27.Rb1 Rc6+/– 28.c4 Ra6 29.Nc3+/– Bd7 30.Rb8+- Bc8 31.Nf3 c6 32.Ng5 Kc7+= 33.Rb1 Qg6 34.Qg3 Bh6 35.Nf3 Qg3 36.fg3 Rb6 37.Rb6 Kb6+= 38.Nd1 Ka5 39.c5 Bf8 40.Nb2 Kb4 41.cd6+- Bd6 42.Kd2 Bd7?? 43.a5 Kb5+= 44.Kc2 f6 45.d4 Bg4 46.Nh2 Bh5 47.g4 Bg6–/+ 48.Kd3 Bc7?? 49.Nf3+/– Bf7 50.a6! Ka6 51.de5 fe5 52.Nc4 Bc4 53.Kc4 Bd6 54.g5 Be7 55.Ne5 Bg5 56.Nc6 Bf6 57.Kd5 Kb6 58.Ne5 Kc7 59.Ng4 Bb2 60.Ne5 Ba1 61.Nc6 Kd7 62.Nd4 Bc3 63.e5 Bb2 64.e6+- Ke7 65.Nf5 Ke8 66.Kd6 Ba3 67.Kc6 Bf8 68.Nh4 Ba3 69.Ng6 Bb4 70.Kd5 Ba3 71.Kc6 Bb4 72.Kd5 Ba3 73.Kc6 Bb4= ½–½. SIRMO – Skean Du, ChessWorld.net, 2006.

4.b5 Bb7 5.Nf3 e5 6.c4 Nbd7 7.a4 g6 8.Nc3 Bg7 9.Be2 0-0 10.0-0 Nc5 11.d4 ed4 12.Nd4 (12.Qd4? Nfe4 13.Qg7 Kg7 14.Ne4 f6 15.Nc5 dc5-+) 12...Nce4 (12...a5 13.Nc6 Bc6 14.bc6=+) 13.Ne4 Be4 (13...Ne4 14.a5=) 14.a5+= ba5 15.Ra5 c5 (15...Re8 16.f3 Bb7 17.Qd2+=) 16.Nb3+/- Qc7 (16...Qe7 17.Ra6 Rfd8 18.Na5+/-) 17.Ra6 Rfd8 18.Qa1 (18.Na5 Nh5 19.Bg7 Ng7+-) 18...Nh5 (18...Ne8!?+/-) 19.Bh5+- Bb2 20.Qb2 gh5 21.Na5 Qe7 (21...Rdb8!?+/-) 22.f3+- Bg6 (better 22...Bd3 23.Re1 Qg5+-) 23.e4 h4 (23...Qe8+-) 24.Nc6 Qg5 (24...Qd7 25.Nd8 Qd8 26.Rd1+-) 25.Nd8 Qd8 (25...Rd8 26.Ra7 h3 27.b6+-) 26.Rd1 h3 (26...f5 27.Rad6 Qg5+-) 27.b6 ab6 (27...Rb8 28.b7 d5 29.Rd5+-) 28.Rd6!! Qe8 (28...Qd6 29.Ra8 Deflection (29.Ra8 Decoy; 29.Ra8 Overloading)) 29.Ra8 Qa8 30.Rb6 hg2 31.Rb8 (31.Rb8 Qb8 32.Qb8 Kg7 33.Kg2+-) 1-0. PierrE – Wisdomer, internet, 2022.

4.b5 Bb7 5.Nf3 g6 6.c4 Nbd7 7.Bd3 (7.Nc3 Bg7=) 7...Bg7+= 8.Qc2 0-0 9.Nc3 Nc5 10.Be2 e5 (10...a6 11.d4 Nce4 12.Ne4 Be4 13.Bd3+=) 11.0-0 h6 (11...Qd7 12.h3+=) 12.d4 e4 (better is 12...ed4 13.Nd4 a6=) 13.Nd2+/– (13.dc5?! ef3 14.Bf3 Bf3 15.gf3 bc5=) 13...Nd3 14.Nde4 Nb2 (14...Ne4 15.Bd3 Nc3 16.Bc3+/–) 15.Nf6 Qf6 16.Nd5 Bd5 (16...Qd8!? 17.Qb2 c5 18.bc6 Bc6+/–) 17.cd5+- Qg5 18.Qb2 a5 (18...Rfe8 19.Rac1 Re7 20.Rc3+-) 19.ba6 h5? (19...Qd5 20.Rfc1 Ra7+-) 20.Qb5 h4 (20...Ra7 21.Rac1+-) 21.h3 Ra7 22.Bd3 Qf6 (22...f5 23.Rae1+-) 23.a4 g5 (23...Rfa8 24.Qc6+-) 24.a5 ba5 25.Rfb1 Rfa8 26.Qa5 Qe7 (26...Qd8 27.Qc3 Qc8 28.Ra2+-) 27.Qc3 Qf8 (27...Kf8 28.Rb7 Bf6 29.Rc1 Rb7 30.ab7+-) 28.Rb7 Qc8 29.Rab1 f5 (29...Kf8+-) 30.Qc2 f4 (30...Qd8 31.Bf5 Bf6 32.Rc1+-) 31.Bf5 Qd8 (31...Qf8 32.Qc7 fe3 33.fe3 Ra6+-) 32.Be6 Kh8 33.Qg6 fe3 (33...Qf6 34.Rb8 Rb8 35.Rb8 Qf8 36.Rf8 Bf8 37.Qg8) 34.Qh5 (34.Qh5 Bh6 35.Qh6) 1–0. Pamieci Krzysztofa P – napohybel, internet, 2016.

4.b5 Bb7 5.Nf3 g6 6.c4 Bg7 7.Be2 Nbd7 8.d4 0-0 9.0-0 Re8 10.Nbd2 e5 11.Rb1 e4 12.Ne1 d5 13.Nc2 c6 (13...a6 14.ba6 Ra6 15.cd5=) 14.bc6+= Bc6 15.Nb4 Bb7 16.Qb3 a5 17.Nd5 a4?? (better is 17...Nd5 18.cd5 a4=) 18.Nf6+- Nf6 19.Qc2 a3 20.Bc3 Ba6 21.Rb3 Bf8 22.Rfb1 Nd7 23.Ne4 Bb7 24.d5 Qh4 25.Nf6! Nf6 26.Bf6 Qf6 27.Rb6 Qg5 28.Rb7 Bc5 29.Qc3 Rad8 30.R1b5 Bd6 31.c5 Be5 32.Qc4 Qh6 33.g3 Bb2 (33...Qg7 34.d6 Re6 35.Qb4+-) 34.d6 Re3 (34...Qf8 35.d7 Re7+-) 35.Qf7 Kh8 36.fe3 Qe3 37.Kf1 Qh6 38.Rb8 Qc1 39.Kg2 Qg5 (39...Qh1 40.Kh1 Bf6 41.Rd8 Bd8 42.Qf8) 40.R5b7 (40.R5b7 Qd5 41.Qd5 Bf6 42.Rd8 Bd8 43.Qe5 Bf6 44.Qe8) 1–0. Janek – Vance, internet, 2016.

4.Bb5 c6 5.Be2 Bb7 6.a4 a6 7.Nf3 g6 8.c4 Bg7 9.0-0 0-0 10.b5 ab5 11.ab5 c5 12.Ra8 Ba8 13.d4 Nbd7 14.d5 e6 (14...Qc7 15.Nbd2+=) 15.Nc3 (better is 15.de6 fe6 16.Qd6+/–) 15...ed5= 16.Nd5 Nd5 17.Bg7 Kg7 18.cd5 Qf6 19.Bc4 Ne5 20.Ne5 Qe5 21.Qf3 Bb7 22.Re1 Re8 23.e4 (23.Rd1!?=) 23...f5 24.Bd3? (24.Rd1 fe4 25.Qh3 e3 26.fe3 Qe3 27.Qe3 Re3–+) 24...Qc3 (24...fe4 25.Qg4 Bd5 26.Bc2–+) 25.Re3 Qc1 26.Bf1 Bd5?? (better is 26...fe4 27.Qh3 Bd5 28.Qd7 Bf7–+) 27.Qe2?? (better is 27.ed5 Re3 28.fe3+-) 27...Be4 28.f3 d5 29.fe4 de4?? 30.Kf2 Rd8 31.Qc4 Rd2–+ 32.Kg3?? Qc4 33.Bc4–/+ Rd4 34.Be6 Kf6 35.Bd7?? Rb4 36.Bc6 Rd4 37.Kf4?? (37...g5 38.Kg3 f4 39.Kf2 fe3 40.Ke3–+; 37.Bd7 Rd7 38.Re2–+). MammaMia – negotiator100, Live Game Caissa's Web, 2004.

4.Nf3 Bb7 5.Be2 Nbd7 6.d3 e5 7.0-0 c5 8.a3 g6 9.Nbd2 Bg7 10.Qb1 0-0 11.b5 a6 12.c4 ab5 13.cb5 Re8 14.Nc4 h5 15.Nd6 Re7 16.Nb7 Qc7 17.Nc5 bc5 18.a4 Ng4 19.h3 Nh6 20.Ra2 Nb6 21.Rc1 Ra4 22.Ra4 Na4 23.Ba3 e4 24.de4 Re4 25.Qe4 Nf5 26.Qa4 Qa7 27.Qa7 1–0. Phomopsis (1705) – yosef_alwese (1745), lichess.org, 2020.

4.b5 a6 5.a4 ab5 (5...e5 6.d4 ed4 7.ed4=) 6.ab5 (6.Bb5 Nc6=) 6...Ra1 7.Ba1 Qa5 (7...e5 8.Be2=) 8.Bc3 Qa4 (8...Qb6 9.d4=) 9.Nf3 (9.Bf6 ef6 10.Nc3 Qa5+=) 9...e6 (better is 9...Bf5!?+=) 10.Bf6+= gf6 11.Bd3 d5 Black prepares c4 12.0-0 c4 13.Nc3 Qb4 (13...Qa5 14.Be2=) 14.Be2 Bd7 (14...Nd7 15.Qa1+=) 15.e4+= de4 16.Ne4 Be7 17.Qa1 c3 (17...Bb5 18.Rb1 Qa4 19.Nf6 Kf8+-) 18.Nc3+- Bc8 19.Bd3 Nd7 20.Ne4 Rg8 21.Qa8 Kd8 22.c3 Qa3 (22...Qb3 23.Nd4 Qd5 24.Ng3+/–) 23.Ra1 (23.Qa3 Ba3 24.Ra1 Be7+-) 23...Qa8+/– 24.Ra8 f5 25.Ng3 Bd6 26.Be2 Ke7 27.d4 Nb6 28.Ra1 Nd5 29.c4 Nc3 30.Bd3 Rd8 31.Re1 Kf6 32.Rc1 Bb4 33.c5 1–0. GuestSBKR – GuestLJPD, freechess.org, 2018.

4.bc5 dc5 5.Nc3 e6 6.Nf3 Nc6 7.Bb5 Be7 8.Ne5+= Qc7 9.Bc6 bc6 10.Nf3 Ba6 11.d3 0-0 12.0-0 e5 13.e4 Bd6 14.Ne2 Rfe8 15.Re1 c4=+ 16.Ng3 Rab8 17.Bc3 cd3 18.cd3 Nd7 19.Qd2 Nc5 20.d4 ed4 21.Nd4 Bg3–/+ 22.fg3 Ne4 23.Ba5 Nd2 24.Bc7=+ Re1 25.Re1 Rc8 26.Nc6+/– Kf8?? 27.Bd6+- (27.Bd6 Kg8 28.Ne7 Kh8 29.Nc8+-) 1–0. wlittle (2285) – blackmagician (2055), net–chess.com, 2003.

4.bc5 dc5 5.Nc3 Bg4 6.Nf3 Nc6 7.h3 Bh5 8.Be2 Bg6 9.0-0 Ne4 10.Rb1+/– f6 11.Nh4 Nc3 12.Bc3+- Ne5?? 13.Be5 fe5 14.Bb5 Kf7 15.Qf3 Kg8 16.Bc4 Bf7 17.Qf7# 1–0. ante – 4game, internet, 2011.

(--> 1.b4 c6 2.Bb2 d6 3.e3 Nf6).

4.c4 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 c6).

4.c4 e5 5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 c6).

4.Nf3 Nbd7 5.Be2 g6 6.0-0 Bg7 7.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7).

4.a3 a6 5.c4 (5.Bf6 ef6 6.Nf3 d5=) 5...e5 6.Nf3 Bg4 7.Be2 Be7 8.Nc3 0-0 9.d3 d5 10.cd5 (10.h3 Be6=) 10...Nd5 11.Nd5 Qd5 12.0-0 Rfe8 13.Qc2 Qd8 (13...Rad8 14.Rfd1=) 14.Rad1 (better is 14.Ne5!? Be2 15.Qe2 Ne5 16.Be5+/–) 14...Bf6 15.Rfe1 Ne7? (better is 15...Qd5!?=) 16.Ne5+/– (worse is 16.Be5 Bf3 17.Bf3 Be5+=) 16...Be2 17.Re2 Be5 18.Be5 Nc6 19.Bb2 Qg5 20.Red2 Ne5? (20...Rad8 21.d4 Qd5 22.Re2+/–) 21.Be5 (better is 21.f4 Nf3 22.Kh1+-) 21...Re7?? (better is 21...Qe5 22.d4 Qd6+/–) 22.Bf4 (22.Bc7 Rc8 23.Bf4 Rc2 24.Bg5 Rd2 25.Rd2 Rc7+-) 22...Qg6 23.d4 Rc8 24.Qg6 hg6 25.Rc2 c6 26.d5 Rd7 27.e4 Rcd8 28.Rdc1 cd5 29.Rc8 de4 30.Rd8 Rd8 31.g3 Rd3 32.Rc8 Kh7 33.Rc7 b5 34.Rf7 Ra3 35.Be5 e3 36.fe3 Re3 37.Rg7 Kh6 38.Re7 g5 39.Kf2 Rb3 40.Re6 Kh5 41.Bd6 Rb2 42.Re2 Re2 43.Ke2 Kg4 44.Kf2 Kh3 45.Kg1 g4 46.Bc5 a5 47.ba5 b4 48.Kf2 b3 49.Bd4 b2 50.Bb2 Kh2 51.a6 (51.a6 Kh3 52.a7 Kh2 53.a8Q Kh3 54.Qh1) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.b5 Nb4 5.c4 Bf5 6.d3 d5 7.Qd2 e6 8.c5 Bc5 9.a3 a5 10.Nf3 d4 11.ed4 (11.ab4 Bb4 12.Nc3 Bc3 13.Bc3 dc3 14.Qc3 a4–/+) 11...Bd6 12.ab4 Bb4 13.Bc3 Nd5 14.Bb4 ab4 15.Ra8 Qa8 16.Be2 Qa4 17.0-0 0-0 18.Nh4 Qb5 19.Nf5 ef5 20.Bf3 b3 (20...Rd8!?+/–) 21.Nc3 Nc3 22.Qc3 c6 23.Rb1 Re8 24.h3 (24.Rb3?? Qb3!? 25.Qa1 Qd3–+) 24...b2 25.Rb2 Qa6 26.Kh2 Rd8 27.d5 h6 28.d4 Qa7 (28...cd5 29.Qc7 Qf6 30.Rb6+-) 29.dc6 bc6 30.Rb4 (< 30.Qc6 Qd4 31.Re2 Kf8+-) 30...Qc7 31.Kg1 Rc8 32.Qc5 Qd7 33.Ra4 Qe6 34.Kh2 Rd8 35.Bc6 Rc8 (35...Rd6 36.Bb7+-) 36.d5 Qe5 37.f4 Qe1 38.d6 Qd1 (38...Qe6 39.Ra8 Ra8 40.Ba8+-) 39.Ra7 (better is 39.Ra8 Ra8 40.Ba8 Qd2 41.Qc8 Kh7 42.Qf5 Kh8+-) 39...Qd2 (39...Kh8+-) 40.Qf5 Rc6 41.Qf7 Kh8 (41...Kh7 42.Qg7) 1–0. Taulien,Hans_Juergen – Avini,Avid, remoteschach.de, 2003.

4.b5 Nb8 5.Be2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 (8...e5 9.d4 Nbd7 10.Nh3=) 9.d4 Bd7 10.Nf3 cb5 11.0-0 Qa5 12.Nbd2 g6 (12...d5 13.Bd3=) 13.Nb3 (13.d5 Bg7 14.Ne4 Ne4 15.Bg7 Rg8+=) 13...Qc7+= 14.Ne5 (14.d5 Bg7=) 14...de5 (14...Bc6!? 15.Ng4 Ng4 16.Bg4 Be4=) 15.de5+= Nh5 16.e6 Rg8 17.ed7 Nd7 18.Bb5 Bg7?? (better 18...e6+-) 19.Nc5 Ba1 (19...e6 20.Bg7 (20.Bd7?! Ke7 21.Bg7 Rg7+-) 20...Rg7 21.Nd7+-) 20.Qa1 (20.Bd7?! Kf8 21.Qa1 Qc5+/-; 20.Nd7?! Bc3 21.g4 Rh8+-; worse 20.Qd7 Qd7 21.Ra1 Kd8 22.Nd7 Kc7+-) 20...Nhf6 21.Nd7 Nd7 22.Qa8 Qd8 23.Bd7 (23.Qb7 Kf8 24.Rd1 e6+-) 23...Kd7 24.Rd1 (24.Rd1 Kc7 25.Qa5 Kc8 26.Rd8 Rd8 27.Qc5 Kd7 28.Kf1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.b5 Ne5 5.d4 Ned7 6.Nf3 e6 7.Bd3 Nd5 (7...Be7 8.0-0+=) 8.c4 Nb4 (better is 8...N5f6!?+=) 9.Be2+- d5 (9...e5 10.0-0+-) 10.a3 c5 (10...dc4 11.ab4 Nb6+-) 11.ab4 cb4 12.c5 b6 (12...a5 13.ba6! ba6 14.Qa4+-) 13.c6 Nf6 (13...Nb8 14.0-0+-) 14.0-0 Ne4 15.Ne5 (15.Nbd2 Nd2 16.Qd2 Qc7+-) 15...f6 16.Bh5 (better is 16.Nf3+-) 16...g6 17.Nd3 gh5 18.Qh5 Ke7 19.Nb4 h6? (19...Qc7+-) 20.Ba3 (20.c7 Qe8 21.Nd5 ed5 22.Qd5 Be6 23.Qe4 Kf7+-) 20...Nd6 21.Nd3 Qe8 (21...Qc7 22.Qg6 a6+-) 22.Bd6 Kd8 23.Bc7! Ke7 (23...Kc7 24.Qe8 Deflection) 24.Qf3 a5 (24...Qg6 25.Nf4 Qf5 26.Bb6+-) 25.Bb6 a4 (25...Qg6 26.Ba5 Ke8+-) 26.Bc5 Kf7 27.Qh5 (27.Qh5 Kg7 28.Qe8 Bc5 29.Qh8 Kh8 30.Nc5+-) 1–0. DEFFM – GuestLZCM, freechess.org, 2018.

4.b5 Ne5 5.Nf3 Bg4 6.Be2 b6 7.Be5 Bf3 8.Bf3 de5 9.Ba8 Qa8 10.0-0 e6 11.a4 Bd6 12.d3 e4 13.de4 Ne4 14.Qd4 0-0 15.Nd2 Nc5 16.Nf3 Be7 17.Rad1 Bf6 18.Qg4 Ne4 19.Rd7 c6 20.Rfd1 cb5 21.ab5 a6 22.ba6 Nc5 23.a7 Nd7 24.Rd7 Rd8 25.Rd8 Qd8 26.g3 Qa8 27.Qa4 Bd8 28.Nd4 Bc7 29.Nb5 Bb8 30.Qa6 Ba7 31.Qa7 Qf8 32.Qb6 h6 33.c4 Qc8 34.c5 Kh7 35.c6 Qa8 36.c7 Qa1 37.Kg2 Qg1 0–1. Abdullaevich – birge, lichess.org, 2019.

4.b5 Bg4? 5.f3+- Bf3 (5...Bd7 6.bc6 Bc6 7.Ne2+-) 6.Nf3 Nb4 (6...Na5 7.Bc3 c6 8.Bf6 ef6 9.Be2+-) 7.c4 Nbd5 (7...e5 8.a3 e4 9.ab4 ef3 10.Qf3+-) 8.cd5 Nd5 9.Qb3 e6 10.Be2 h5 (10...Nf6 11.0-0+-) 11.0-0 h4 12.Nc3 h3 (12...Nf6 13.a4+-) 13.g3 (better 13.Nd5 ed5 14.Qd5 hg2 15.Kg2 Qd7+-) 13...Nf6 14.d4 (14.a4 d5+-) 14...Ng4 (14...d5 15.Bd3+-) 15.Ne4 d5 16.Nf2 (better 16.Nc5 Rb8+-) 16...f5 (16...Nf2 17.Rf2 Bd6 18.Ba3+-) 17.Ng4 fg4 18.Ne5 Bd6 (18...Qc8 19.Qd3 Rh6 20.Ng4+-) 19.Bg4 (better 19.Nf7 Qe7 20.Nh8 0-0-0+-) 19...Qg5 (19...Be5 20.de5 Qe7+-) 20.Be6 Be5 21.de5 a5 22.Qd5 Qe3 (22...Qg3 23.hg3 h2 24.Kh1 Rd8 25.Bf7 Ke7 26.Qe6 Kf8 27.Bg6) 23.Kh1 Rd8 (23...Qg1 24.Kg1 Rd8 25.Bf7 Ke7 26.Qe6 Kf8 27.Bg6) 24.Bf7 Kf8 (24...Ke7 25.Qe6 Kf8 26.Bg6 Qf2 27.Rf2) 25.Bg6 (25.Qd8) 25...Ke7 (25...Qf3 26.Qf3 Kg8 27.Qf7) 26.Rf7 (26.Qf7) 26...Ke8 27.Qe6 1-0. ClayPigeons (2200) - Emincang (2150), Rated Bullet game, lichess.org, 2021.

4.Nf3 a6 5.a3 e5 6.Be2 g6 7.0-0 Bg7 8.c3 Bg4 9.d4 e4 10.Nfd2 Be2 11.Qe2 d5 12.c4 b6 13.cd5 Qd5 14.Nc3 Qf5 15.f3 ef3 16.Rf3 Qd7 17.Raf1 0-0 18.Rf6 Bf6 19.Rf6 Rfe8 20.Rf3 Nd4 21.Qf2 Nf3 22.Nf3 Qd3 23.Ne4 Qe4 0–1. Chess4Win (1740) – duccr07 (1740), lichess.org, 2020.

4.Nc3 c6 5.Nf3 e5 6.a3 Be7 7.Bc4 Be6 8.Be6 fe6 9.0-0 Nbd7 10.Ng5 Nf8 11.Qf3 Qc7 12.Qh3 Nd5 13.Ne6 Ne6 14.Nd5 cd5 15.Qe6 Qc2 16.Rac1 Qb2?? 17.Rc7 Kf8 18.Qe7 (18.Qe7 Kg8 19.Qg7) 1–0. pierred (2760) – rprado (2125), net–chess.com, 2011.

4.h3 e5 5.Nf3 Nd5 6.b5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 b6 10.Nc3 Nf6 11.Be2 Be7 12.0-0 0-0 13.d3 h6 14.e4 Nh7 15.Nd5 Bb5 16.Ne7 Qe7 17.c4 Bd7 18.Qb3 c6 19.Qb6 c5 20.Nh2 Nc6 21.Bg4 Rb8 22.Qa6 Qd8 23.Bd7 Qd7 24.Bc3 Rb3 25.Ba1 Rd3 26.f4 f6 27.fe5 de5 28.Ng4 Nb4 29.Qa8 Nf8 30.Nf6 gf6 31.Rf6 Rd1 32.Kh2 Qe7 33.Rh6 Qg5 34.Rh4 Qf4 35.Rf4 ef4 36.Qb7 Ra1 37.Qc7 Nd3 38.Qc6 Ne5 39.Qd5 Kg7 40.Qe5 Kf7 41.Qf4 Ke8 42.Qe5 Kd7 43.Qc5 Ke8 44.Qe5 Kd7 45.c5 Ra7 46.Qd6 Kc8 47.Qf8 Kc7 48.e5 Kc6 49.e6 Kd5 0–1. riditko – lakisss, kurnik, 2012.

(--> 1.b4 d6 2.Bb2 Nd7 3.e3 Ngf6).

4.c4 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7).

4.c4 g6 5.Nf3 Bg7 6.Be2 0-0 7.Nc3 e5 8.0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Nbd7 8.Nc3).

4.Nf3 e5 5.Be2 Be7 6.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 Be7 5.Be2 0-0 6.0-0 Nbd7).

4.Nf3 g6 5.c4 Bg7 6.Be2 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 Nbd7).

4.Nf3 g6 5.Be2 Bg7 6.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 Nbd7).

(--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6).

4.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3).

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3).

4.c4 a5 5.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4).

4.c4 b6 5.Nf3 Bb7 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7).

4.c4 Be6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6).

4.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7).

4.c4 Be7 5.Nc3 0-0 6.Nf3 Bg4 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3).

4.c4 Be7 5.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0).

4.c4 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.d4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.d4).

4.c4 Be7 5.Nf3 0-0 6.Be2 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

4.c4 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5).

4.c4 g6 5.Nc3 Bg7 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3).

4.c4 g6 5.Nc3 Bg7 6.Nf3 0-0 7.Be2 Nbd7 8.0-0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Nbd7 8.Nc3).

4.c4 g6 5.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

4.c4 g6 5.Nf3 Bg7 6.d3 0-0 7.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

4.c4 g6 5.Nf3 Bg7 6.Be2 0-0 7.0-0 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

4.Bc4 Be7 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 Be7 5.Bc4).

4.Be2 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Be2).

4.Be2 Bf5 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Bf5 4.Nf3 Nf6 5.Be2).

4.Nf3 Nbd7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nf3).

4.Nf3 Nbd7 5.d3 g6 6.Be2 Bg7 7.0-0 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.0-0 e5 7.d3 Nbd7).

4.Nf3 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3).

4.Nf3 Be7 5.c4 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0).

4.Nf3 Be7 5.Be2 0-0 6.c4 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

4.Nf3 Be7 5.Be2 c6 6.c4 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 c6).

4.Nf3 Bf5 5.c4 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3).

4.Nf3 Bg4 5.c4 Nbd7 6.Be2 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 Nbd7).

4.Nf3 g6 5.c4 Bg7 6.Nc3 0-0 7.d4 Nbd7 8.Be2 (--> 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.Nc3).

4.Nf3 g6 5.c4 Bg7 6.d3 0-0 7.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

4.Nf3 g6 5.Be2 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.0-0 e5).

4.Nf3 g6 5.Be2 Bg7 6.0-0 0-0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0).

4.Nf3 g6 5.Be2 Bg7 6.0-0 0-0 7.c4 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

4.Nf3 g6 5.Be2 Bg7 6.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5).

4.Nf3 h6 5.c4 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 h6).

4.b5 c5 (4...a6 5.Nc3=) 5.c4 (5.Nf3 Bg4=) 5...g6 (5...Nbd7 6.Nf3=) 6.Nf3 Bg7 7.Be2 a6 8.a4 a5 (8...0-0 9.0-0=) 9.0-0+= b6 (9...0-0 10.d4+=) 10.Ng5 0-0 11.Bf3 Ra7 12.Ne6 fe6 13.d4 Nbd7 14.Nd2 Ne8 (14...Rc7 15.Rc1+=) 15.Qb3 cd4 (15...Nc7 16.Ne4+-) 16.ed4 e5 (16...Kh8!?+-) 17.c5+- Kh8 18.c6 Nb8 (18...ed4 19.cd7 Rd7 20.Bc6+-) 19.de5 de5 20.Nc4 Qc7 (20...e4 21.Be4 Nd6 22.Bg7 Kg7 23.Qb2 Kf7 24.Bd5 Ke8 25.Rfd1 Nc4 26.Bc4+-) 21.Rad1 e4 22.Be4 Bb2 (22...Nd6 23.Nd6 ed6 24.Bg7 Kg7 25.Qc3 Rf6 26.Rd3+-) 23.Qb2 (23.Nb2?! Nf6 24.Bf3 Ne8+-) 23...Ng7 (23...Nf6 24.Qd4 e5 25.Ne5+-) 24.Qd4 (24.Qd4 Qf4 25.Qb6+-) 1–0. GuestJYSS – GuestBSWM, freechess.org, 2020.

4.Nf3 g6 (4...Bf5 5.Bf6 ef6 6.Nd4=) 5.c4 Bh6 (5...Bg7 6.Be2=) 6.Be2+= 0-0 (6...Bg7 7.0-0+=) 7.0-0 (7.Bf6 ef6 8.d4 c5+=) 7...d5 (7...Bg7 8.d4+=) 8.Nd4 (8.Bf6 ef6 9.c5 f5+=) 8...Bd7 9.cd5 Nd5 10.Qb3 e6 (10...c6 11.Nc3 Nc3 12.dc3+=) 11.b5 (11.Nc3 Nc3 12.dc3 e5+=) 11...a6 (11...c6 12.Bf3+=) 12.a4 (12.ba6 b6+=) 12...a5 (12...ab5!? 13.ab5 Ra1 14.Ba1 Bg7+=) 13.Nc3 Nb4 (13...Nc3 14.dc3 e5 15.Nf3+=) 14.Ne4 (14.Nf3 c6+/–) 14...Re8 (14...Bg7 15.Nc2 Nc2 16.Qc2+/–) 15.Nf3 e5 (15...Nd5!?+/–) 16.Ne5+- Re6? (better is 16...Be6 17.Bc4 Bg7 18.Nf7 Bc4 19.Qc4 Qd5 20.Nh6 Kf8 21.Bg7 Kg7 22.Qc7 Qd7+-) 17.Bc4 Qe8 (17...Bc8+-) 18.Nd7 Qd7 (18...Nd7 19.Qc3 Ne5+-) 19.Qc3 (19.Qc3 Kf8 20.Be6 Qe6 21.Qh8 Ke7 22.Bf6 Qf6 23.Qf6 Ke8 24.Qe5 Kf8 25.Qc7+-) 1–0. DEFFM – GuestPFKH, freechess.org, 2018.

4.b5 Nbd7 5.c4 a6 6.a4 c6 7.Nf3 g6 8.Be2 Bg7 9.0-0 0-0 10.Nc3 Ne4 11.d4 Qc7 12.Qb3 Rfc8 13.Ne4+= Be4 14.Ng5 Nf6 15.b6 Qd7 16.f3+- Bf5 17.e4 Be6 18.d5 cd5 19.cd5 Bf5 20.ef5 Qf5 21.Ne4! Qd5?? 22.Nf6 (22.Nf6 Bf6 23.Qd5 Bb2 24.Rab1+-) 1–0. Veer,Willem – Christopher,Art, 36th Olympiad, Calvia ESP, 2004.

4.c4 Nc6 5.a3 e5 6.Nf3 Be7 7.Be2 0-0 8.d3 Qd7 9.0-0 h6 10.Nbd2 g5 11.Qb3 Be6 12.Qc2 g4 13.Ne1 Bf5 14.f3 h5 15.Qd1 Qe6 16.Nc2 Rae8 17.Rf2 b6 18.d4 ed4 19.Nd4 Nd4 20.ed4 d5 21.c5 Kh7 22.Nb3 Rg8 23.Bd3 Bg6 24.Bg6 Rg6 25.Nd2 h4 26.Qe1 g3 27.hg3 hg3 28.Re2 Qf5?? 29.Nf1 Qf4?? (30.Re7 Re7 31.Qe7 Ng4+-; better is 29...Qd7+/–). Bikis,Hristos – Fournarakos,Gerasimos (2040), Ambelokipi op, 2000.

4.c4 e6 5.Nf3 a5 6.b5 c5 7.a4 (7.Nc3 Nbd7=) 7...b6 (7...d5 8.Be2=) 8.Nc3 d5 9.d4 dc4 10.Bc4 cd4 11.Nd4 Bb4? (11...Bg6 12.Rc1+=) 12.0-0 (better 12.Nf5!? Qd1 13.Kd1+-) 12...Bc3 13.Bc3 Be4 14.f3 Bd5 15.Qb3 (15.Nf5 0-0 16.Bf6 Qf6 17.Bd5 ed5 18.Qd5 Ra7+/-) 15...0-0 16.Rfd1 Qc7 (16...Bc4 17.Qc4 Qe7 18.e4+/-) 17.Bd5 Nd5 18.Rac1 Nc3 19.Rc3 Qe5 (19...Qe7 20.Rdc1+=) 20.f4 Qe4 (20...Qh5 21.Nc6 Nc6 22.bc6+/- (worse 22.Rc6 Rad8 23.Rcd6 Rd6 24.Rd6 Qe2+=)) 21.Nf3 (21.Nc6 Kh8+-) 21...Ra7+/- 22.Rd4 Qg6 23.Ne5 Qh5 24.Rcd3 Qe2 (24...Rc7 25.Qd1 Qd1 26.Rd1+/-) 25.h3 (25.Qd1 Qd1 26.Rd1 Rc7+-) 25...h5? (25...Qe1 26.Kh2 Rc7 27.Nc4+-) 26.Kh2 (better 26.Rd8!? Qe1 27.Kh2+-) 26...h4+/- 27.Nf3 Qf2? (27...Rc7+/-) 28.f5 (better 28.Rd8 Nd7 29.R3d7 Rd7 30.Rd7+-) 28...Qg3+= 29.Kg1 ef5 30.Rh4 (30.Nh4 g6+/-) 30...Rd7 (30...Nd7 31.Rd1+=) 31.Rhd4 Rd4 32.Rd4 Rc8 33.Qd1 Qc7 34.Rd6 g6 (better 34...Qe7!? 35.Qd4 Re8+-) 35.Ne5 Kg7 36.Qd4 Qc3 (36...Kg8 37.Ng6 fg6 38.Rg6 Kh7 39.Qf6 (39.Rb6?! Qg3 40.Rb7 Rc7 41.Rc7 Qc7+/-; 39.Qb6?! Qe5+-) 39...Qc1 40.Kh2 Qc7 41.Rg3 Qg3 42.Kg3 Rg8 43.Kh4+-) 37.Qc3 Rc3 38.Rb6 (38.Rd8 Rc5 39.Nd3 Rc3+-) 38...Re3 39.Nc4 (39.Rb8 Re5 40.Ra8 Re1 41.Kf2 Rb1+-) 39...Re8? (39...Nd7 40.Rd6 (40.Ne3 Nb6 41.Kf2 Kf6=+) 40...Re1 41.Kh2+/-) 40.Na5 (better 40.Rb7!?+-) 40...Nd7 41.Rd6 Nc5 42.Rd4 (42.b6!? Na4 43.Rc6 Nb6 44.Rb6+-) 42...Ra8+/- 43.Nc6 Ra4 44.Ra4 Na4 45.Kf2 Nb6 (45...Kf6 46.Kf3+=) 46.Ke3+/- Kf6 47.Kd4 Ke6 48.Kc5 (48.Ne5!?+/-) 48...Nd7+= 49.Kc4 (49.Kb4 f4+/-) 49...Kd6 (49...Nb6 50.Kb4+=) 50.Nd4 Nb6 51.Kb4 Kd5 52.Nf3 f6? (52...Nc4 53.Ng1+=) 53.Nd2 (better 53.Nh4!? g5 54.Nf5+-) 53...g5 (53...Nd7 54.Ka5+=) 54.g3 (54.Ka5 Nd7 55.h4 gh4 56.Nf3+=) 54...f4? (better 54...Nd7!?+=) 55.gf4+- gf4 56.h4 Kd4? (56...Ke6 57.Kc5 Na4 58.Kd4 Kf5=) 57.h5+- Kd3 (57...Nd5 58.Ka5 Ke5+-) 58.Nf3 Ke3 (58...f5 59.h6 Nd5 60.Kb3+-) 59.Nh4 (59.Nh4+-) 1-0. zembelek (2050) - 147a (2110), Rated Blitz game, lichess.org, 2013.

4.Bd3 Bd3+= 5.cd3 Nbd7 (5...e5 6.Nf3+=) 6.Bf6 (6.Nf3 e5=) 6...Nf6+= 7.Nc3 g6 (7...e6 8.Nf3+=) 8.Nf3= Qd7 9.Qb3 (9.d4 Bg7=) 9...Qg4 (9...Bg7 10.d4=) 10.0-0 0-0-0? (better is 10...Bg7!?=) 11.Rac1 (11.Rfc1 Rd7+/–) 11...e6 (11...Kb8!?+/–) 12.Nb5+- Kb8? (better is 12...Rd7+-) 13.Qa3 (13.Qc3 Rd7 14.Qf6 Rg8 15.Rc7 Bg7 16.Qg7 Rg7 17.Rd7 Rg8 18.Nd6 Qb4 19.Rb7 Qb7 20.Nb7 Kb7 21.Rb1 Kc7 22.Rc1 Kd8+-) 13...a6 14.Nc7 (better is 14.Qc3 Ne8 15.Qh8 Bg7+-) 14...Rc8? (better is 14...Nd7+-) 15.Na6! Ka7 (15...ba6 16.Rc8 Combination) 16.Nc7 (16.Nc7 Kb8 17.Qa8) 1–0. pcmvr – langelli, net–chess.com, 2017.

4.Nf3 c6 5.c4 Qc7 6.Nc3 Na6 7.a3 Rd8 8.Be2+= d5 9.c5 e5+= 10.0-0 Nb8 11.d4 Nbd7 12.de5 Ng8 13.Bd3 Ne5?? 14.Bf5+- Nf3 15.Qf3 Qe5 16.Nd1 Qc7 17.Bd4 b6 18.Nb2 bc5 19.bc5 a5 20.Nd3 Qa7 21.Ne5 Bc5 22.Nc6 Qb6 23.Bg7 Qc6 24.Rfc1 Ne7 25.Bh8 Be3 26.Rc6 Nf5 27.Qf5 Bc1 28.Rac1 Rc8 29.Rc8 Ke7 30.Qf6 Kd7 31.R1c7# 1–0. mtr – Scottypliskin, internet, 2001.

4.Nf3 Nbd7 5.c4 e6 6.Nc3 Be7 7.Be2 0-0 8.0-0 c5 9.b5 d5 10.d3 Qc7 11.cd5 (11.Nh4 d4 12.ed4 cd4=) 11...ed5 12.Qb3 Nb6 13.Qd1 Rfd8 14.Qe1 (14.a4 a5=) 14...Rac8 (14...d4 15.ed4 cd4 16.Nd1=+) 15.a4= c4 16.d4 (16.a5 Nbd7 17.dc4 dc4=) 16...Bb4 17.Qc1 (17.a5 Nbd7=+) 17...Qd6 (17...a5!?–/+) 18.a5= Nbd7 19.Ba3 Nf8 20.Bb4 Qb4 21.Qa3 Qa3 22.Ra3 Ng6 23.Nd2 Re8 24.h3 Rcd8 25.Re1 Kf8 26.Bf3 (26.g4 Be6=) 26...Nh4 27.Be2 Re6 (27...Rc8 28.Rc1=) 28.Nf3 (28.g3 Ng6 29.g4 Bd3 30.Bd3 cd3+=) 28...Nf3= 29.Bf3 Ne4 30.Rc1 Nc3 31.Rcc3 Rg6 32.Kh2 Bd3 (32...Rgd6 33.Ra1=) 33.Ra1 (33.Rd3 cd3 34.Rd3 a6=) 33...Ke7 34.Re1 Re6 (34...Kd6 35.Bh5 Rf6 36.Kg3=+) 35.Be2 (35.Rec1 Kd6=) 35...Be2 36.Re2 Kd6 37.f3 Rde8 38.Kg1 (38.e4 a6 39.b6 g5=) 38...R6e7 39.Kf2 Re6 (39...f5 40.g4 f4 41.e4=) 40.g3 (40.e4 h5=) 40...R6e7 (40...f5 41.g4=+) 41.g4 (41.e4 a6 42.e5 Ke6=) 41...h6 42.Kg3 Re6 43.h4 R8e7 44.f4 White prepares the advance g5 (44.h5 g6=) 44...Re4 45.Kf3 Re8 46.Rg2 White intends g5 46...Kd7 47.h5 f6 48.g5 (better 48.Ra2!?=) 48...fg5–/+ 49.fg5 Rf8 (49...Rh4 50.a6 b6 51.gh6 gh6 52.Rg7 Re7 53.Re7 Ke7 54.Kg3 Rh5 55.e4–+) 50.Ke2 Rh4 (50...Rf5 51.gh6 gh6 52.a6=+) 51.gh6=+ gh6 52.Rg7 Kc8 53.a6 Rh2 (53...ba6 54.ba6 Rh2 (54...Rh5?! 55.e4–/+) 55.Ke1 Rff2–+ (55...Rh5?! 56.e4–/+)) 54.Ke1–+ ba6 (54...Rh5 55.b6 (55.Rb7? Rh1 56.Ke2 Rh2 57.Ke1 Rff2–+; worse 55.ab7 Kb8–/+) 55...Rhf5 56.Rc4 dc4 57.ba7 Rf1 58.Kd2 R8f2 59.Kc3+-) 55.Ra7? (better 55.ba6 Rff2 56.Rc1–+) 55...Rff2 56.b6 (56.Rc1 Rb2 57.Rf7 ab5 58.Ra1 Rh1 59.Rf1 Rh5 60.Kd1–+) 56...Rb2 57.b7 (57.Ra8 Kd7 58.Ra7 Kd6 59.Rd7 Kd7 60.Rc2 Rb1 61.Rc1 Rc1) 57…Kb8 (57...Kb8 58.Ra8 Kb7 59.Rb8 Kb8 60.Rb3 cb3 61.e4 Rh1) 0–1. Buck,K1 (1835) – Nania,Alberto, Arco Open A, Arco ITA, 2009.

4.Nf3 Nbd7 5.d4 h6 (5...Nd5 6.a3=+) 6.Nbd2 e6 7.Be2 (7.Bd3 Bd3 8.cd3 d5=) 7...Be7 (7...d5 8.a3=+) 8.c4 0-0 (8...a5 9.ba5 Ra5 10.Nb3=) 9.0-0 b6 10.Nh4 Bh7 11.f3?? (11.Nhf3!?+=) 11...c5 (better is 11...g5–+) 12.bc5= bc5 13.e4 g5 14.Qe1? (14.e5 de5 15.f4 gh4 16.fe5–+) 14...Ne8?? (better is 14...gh4 15.Rb1 Qa5–+) 15.Qg3+= Ng7 16.dc5 Nc5 17.f4 (better is 17.Bd4!?+=) 17...Ne4 18.Ne4 Qb6 19.c5 (19.Qf2 Qb2 20.Rfb1–+) 19...Qb2–+ 20.Qf2? (better is 20.fg5 Be4 21.gh6–+) 20...Be4 (20...gh4?! 21.Nd6 Bd6 22.cd6–+) 21.cd6 Bd6 (21...gh4?! 22.de7 Rfe8 23.Qe3–+) 22.fg5 Qe5 23.g3 Bc5 (24.gh6 Bf2 25.Kf2 Qd4 26.Ke1 Qa1 27.Bd1 Rad8–+) 0–1. Vandenburg,V – Rostrom,R, Lansing MI Apr mini, 1990.

4.Nf3 e5 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3).

4.f4 Nc6 5.a3+=.

4.f4 Nbd7 5.Nf3= Bg4 (5...e6 6.Nc3=) 6.Be2 c6 (6...d5 7.Bf6 Nf6 8.Nd4=) 7.0-0 h6 8.c4 (8.Nc3 Qb6+/–) 8...Qb6 9.b5 cb5 (9...a6 10.Bf6 Nf6 11.bc6 bc6 12.Nc3+/–) 10.cb5+/– Bf3 (10...Nc5 11.Nc3 a6 12.a4+/–) 11.Rf3 (11.gf3?! g5 12.Bd4 Qa5=) 11...e5 12.Na3 Nd5? (better is 12...d5 13.fe5 Ba3 14.Ba3 Ne5+/–) 13.Nc4+- Qc7 14.fe5 (14.Rc1 e4 15.Rg3 N5f6+-) 14...Ne5 (14...de5 15.Rc1 e4 16.Rf2+-) 15.Ne5 de5 16.Qb3 Rd8 (16...Qd6 17.Bc4 0-0-0 18.Rf7+-) 17.b6! ab6 (17...ab6 18.Bb5 Double attack; 17...Qb6 18.Bb5 Double attack (18.Be5 Deflection); 17...Nb6) 18.Bb5 Ke7 19.Rc1 Qb8 20.Ba3 (better is 20.Bc4 Rc8 21.Bd5 Rc1 22.Bc1 f6 23.Qb6 Ke8 24.Qe6 Kd8 25.Rf6 Be7+-) 20...Ke6 21.Bf8 Rhf8 22.e4 f5 (22...Ke7 23.ed5 Qd6+-) 23.ed5 Kf6 (23...Ke7 24.Qb4 Kf7 25.Rf5 Kg8 26.Rf8 Rf8 27.d6+-) 24.Bd3 (24.Rf5 Kg6 25.Rf8 Rf8 26.Qd3 Kf7 27.Qh7+-) 24...f4 25.Be4 Qd6 26.Qb2 Kg5 (26...Kf7 27.Rb3 Rc8 28.Rf1+-) 27.d4 Rfe8 (27...ed4 28.Qd4 g6+-) 28.Rb3 (28.Rb3 ed4 29.h4 Kf6 30.Rb6 Re4 31.Qb4+-) 1–0. Tagirov,Kajum K – Varivoda,Anatoly, 5th Cup Governov B, 2009.

4.Bf6 ef6 5.Qf3 Qc8= (worse is 5...Bc2 6.Qb7 Nd7 7.Qc6 Bb1 8.Rb1+/–).

4.Be2 Be2 5.Qe2 Nbd7 6.f4 (6.Bf6 ef6 7.Nf3 c6+=) 6...e5= 7.fe5 Ne5 (7...de5!? 8.a3 c5=+) 8.Nf3+= Nf3 (8...Qe7 9.0-0+=) 9.Qf3 Be7 10.Qb7 0-0 11.a3 Rb8 (11...a5 12.b5+=) 12.Qf3 (12.Qa7 c5+-) 12...c5 13.0-0 (13.Bc3 Qd7+-) 13...cb4 (13...a5!?+=) 14.ab4+- Rb4 15.Bc3 Rc4 16.Ra7 Rc3? (better 16...d5+-) 17.Nc3+- (17.dc3?! d5+-) 17...Qb6 (17...d5+-) 18.Re7 1–0. FeegLood (2200) – supertaldo (2005), time forfeit, 2015.

4.Be2 Be2 5.Ne2 e5 6.a3 Nc6 (6...Nbd7 7.d4=) 7.c4 (7.0-0 Be7=) 7...Be7 8.Qb3 a6 (8...Qd7 9.d4=) 9.0-0 0-0 10.Nbc3 b6 (10...Re8 11.d3+=) 11.d4+= ed4 12.ed4 Re8 13.Rad1 Qc8 14.Ng3 Qg4 15.b5 (15.Rfe1 Rad8+= (15...Nd4? 16.Rd4 Qd7 17.Nce4+-)) 15...Nd4 (15...Na5 16.Qa4 ab5 17.Nb5 Rac8=) 16.Qa2 (better 16.Rd4 Qd4 17.Nce4 Qe4 18.Ne4 Ne4 19.Re1+=) 16...Ne2?? (better 16...c5-/+) 17.Nce2+- Ne4?? (17...Nd7 18.Rd4 Qg5 19.Bc1+-) 18.Ne4 (better 18.f3 Qe6 19.Nd4+-) 18...Qe4 19.Ng3 (19.Nc3!? Qc2+-) 19...Qg6 20.Rfe1 Bf6 (20...Bh4 21.Qb3+-) 21.Bf6 gf6 (21...Qf6 22.Qd2+-) 22.Qd2 Re5 23.Re3 (better 23.f4!? Rc5+-) 23...ab5 24.cb5 Rb5 25.Rde1 (25.Ne2 Kh8+-) 25...Re5 (25...Rba5 26.Re7 R8a7 27.Qc3+-) 26.f4 Re3 27.Qe3 Qf5?? (27...Kg7+-) 28.Nf5 (28.Nf5 d5 29.Qe8 Re8 30.Re8) 1-0. ClayPigeons (2065) - mamuking65 (2015), Rated Bullet game, lichess.org, 2020.

4.f3 Bh5 5.g4 Bg6 6.h4 h5 7.g5 Nfd7 8.Nh3 e5 9.Nc3 Be7 10.a3 Nc6 11.Bb5 (11.f4 Nb6=) 11...a6 12.Bc6 bc6 13.Nf2 (13.f4 Rb8=) 13...c5 14.Rg1 (14.bc5 Nc5 15.d4 Rb8=+) 14...cb4 15.ab4 0-0 16.Nd5 c5 (16...c6 17.Ne7 Qe7 18.e4=+) 17.Ne7 (17.bc5 dc5 18.Bc3 Ra7=) 17...Qe7=+ 18.bc5 Nc5 19.Ba3 Qc7 Black prepares e4 20.d3 Ne6 21.Qd2 Rfc8 22.Rc1 (22.c4!?=+) 22...d5–/+ 23.Nh3 e4 (23...d4!? 24.Kd1 Rab8–/+) 24.fe4 de4 25.d4 (25.Nf2 Qh2 26.Rh1 Qg3 27.de4 Rd8–/+) 25...Qc3 (better 25...Nd4 26.ed4 e3–+) 26.Qc3?? (better 26.Bb4 Qc4 27.d5=+) 26...Rc3–+ 27.Bb2 (27.Kd2 Ra3 28.Ra1 Ra1 29.Ra1–+) 27...Re3 28.Kd2 Rh3 29.d5 Nc5 (29...Nf4 30.Be5 e3 31.Kd1 Nd5 32.c4–+) 30.Bd4 (30.Rh1 Rf3 31.Ke1 Rd8–+) 30...Nd7 (better 30...Rd8 31.Rh1 Rh1 32.Rh1 Rd5 33.Ke3–+) 31.c4 (31.Rh1 Rh1 32.Rh1 f5 33.gf6 Nf6–+) 31...Rd8 (better 31...Rd3 32.Ke2 Rd4 33.Rgd1 Rd1 34.Rd1–+) 32.Ke2 Nb8 (32...Rh2 33.Ke3 Rh4 34.Rh1 Rh1 35.Rh1–+) 33.Be3 (33.Rh1 Rd3 34.Rhd1–+) 33...Nd7 34.c5?? (34.Bd4 Rh2 35.Ke3 Rh4 36.Rh1 Rh1 37.Rh1–+) 34...Ne5–+ 35.Rgd1 (35.Rh1 Rh1 36.Rh1 Rd5–+) 35...Nd3 (better 35...Rh2 36.Bf2 Nd3 37.Rd3 ed3 38.Kf3 Rd5 39.Kg3–+) 36.c6 Nc1 37.Rc1 Rc8 (37...Rh4 38.c7 Rc8 39.d6 Rh2 40.Bf2–+) 38.c7 (38.d6 Rb8 (38...Rh4?! 39.d7 Bf5 40.dc8R Bc8 41.c7–+) 39.c7 Rb2 40.Kf1 Rh1 41.Bg1 e3 42.c8Q Kh7–+) 38...Rh4 39.d6 Rh2 40.Bf2 Bf5 41.Rb1 Bd7 42.Rb8 (42.Ke3 Re8 43.Rb8 Rh3 44.Kd4 Rd3 45.Kc5 Rc8–+) 42...f6 43.Ke3 Kf7 44.Bg3 (44.gf6 gf6 45.Rb6 a5–+) 44...Rh3 45.g6 (45.Kf2 h4 46.Bh4 Rh4 47.gf6 Kf6–+) 45...Kg6 46.Kf4 Kf7 (46...f5 47.Ke5 Rg3 48.Kd4–+) 47.Bf2 g5 (better 47...Bc6 48.Bg3 g5 49.Ke3 Rg3 50.Kf2 Rf3 51.Kg1–+) 48.Ke4 Rh4! 49.Kd5 (49.Bh4 Re8 Double attack (49...Re8 Decoy; 49...gh4 Passed pawn)) 49...Rh2 50.Ba7 Rd2 51.Kc5 (51.Bd4 h4 52.Rb1 Rc2–+) 51...Ke6 52.Kb6 (52.Kb4 Rd6 53.Bb6 h4–+) 52...Rb2 (better 52...Kd6 53.Rc8 Bc8 54.Ka5–+) 53.Ka6 Ra2 54.Kb7 Rb2 55.Ka8?? (55.Ka6 Rc2 56.Rb6–+) 55...Rc2 (55...Bc6) 56.Rc8 Bc6 (better 56...Bc8!? 57.Kb8 Bd7 58.Kb7–+) 57.Kb8 Rb2 58.Bb6 Rb6 59.Ka7 Ra6 (better 59...Rb7 60.Ka6 Kd6–+) 60.Ka6+- Bd5 (60...Kd6 61.Kb6 Bd7+-) 61.Kb6 (61.Re8 Kf7 62.c8Q+-) 61...Bc6 (61...Kd6 62.Rd8 Ke5 63.c8Q+-) 62.Rd8 (better 62.Kc6 Kf5 63.Rf8+-) 62...Bd7 63.c8Q Bc8 64.Re8 (64.Re8 Kd6 65.Rc8=; 64.Rc8?! Kd6 65.Kb5 h4=) 1–0. FeegLood (2205) – supertaldo (1975), time forfeit, 2015.

4.Nf3 Nc6 5.b5 Nb8 6.Be2 Nbd7 7.0-0 e5 8.d3 Be7 9.Nbd2 0-0 10.c4 Re8 11.a4 b6 12.h3 Bh5 13.Nh4 Bg6 14.Ng6+/– hg6 15.Bf3 Rb8 16.Bc6 Rf8 17.f4 ef4 18.Rf4 Nc5 19.Qc2 Nh5 20.Rf3 Bf6 21.d4 Ne6 22.Raf1 Qe7 23.Ne4 Ng5 24.Nf6 Nf6+= 25.Rf6 gf6 26.e4 Rbe8 27.e5 de5 28.de5 fe5 29.Be8 Re8 30.Qd2 Nh7 31.Qh6? Qf8 32.Qe3= Qc5 33.Qc5 bc5 34.Ba3 e4 35.Bc5 e3 36.Ba7 e2 37.Re1 Ra8 38.b6 cb6 39.Bb6 Ra4 40.c5 Ra2 41.Kf2 Rc2 42.Re2 Rc4 43.Re8 Kg7 44.Rc8 Nf6 45.c6 Ne4 46.Kg1 Nd6= 47.c7?? Nc8–+ 48.Be3 Rc7 0–1. elsh1403 – semdodepato (1740), kurnik, 2011.

(--> 1.b4 Nf6 2.Bb2 g6 3.e3 d6).

4.Be2 Bg7 5.b5 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 d6 6.Be2).

4.Be2 Bg7 5.Nf3 0-0 6.0-0 c6 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0).

4.f4 Bg7 5.Nf3 Nbd7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0-0 5.Nf3 d6 6.Be2 b6).

(--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6).

5.d4 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4).

5.d4 0-0 6.Nf3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5) .

5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6).

5.Nf3 0-0 6.d4 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6 6.Be2 Bb7 7.0-0 d6).

5.a3 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 0-0 5.Nf3 d6).

5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3).

5.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6).

5.c4 0-0 6.Nc3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0).

5.c4 0-0 6.d4 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

5.c4 0-0 6.d4 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 Nbd7).

5.c4 0-0 6.Be2 e5 7.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0 7.Be2).

5.c4 b6 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 b6).

5.c4 Nbd7 6.Be2 e5 7.0-0 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Nbd7).

5.d4 0-0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4).

5.d4 0-0 6.c4 a5 7.b5 (---> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

5.Be2 0-0 6.0-0 e5 7.d3 Nbd7 8.Nbd2 c6 9.c4 Re8 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Nbd7 8.Nbd2 Re8 9.0-0 c6).

5.Be2 0-0 6.c4 e5 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2).

5.Be2 0-0 6.d4 Nbd7 7.0-0 e5 8.c4 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

4.ba5 Nc6 5.a3 Na5 6.d3 b6 7.Nbd2 e6 8.c4 Be7 9.g3 0-0 10.Bg2 Bb7 11.0-0 d5 12.cd5 Bd5 13.e4 Bb7 14.Qc2 Nc6 15.Ne5 Nd4 (15...Ne5 16.Be5 c5 17.Rfb1=) 16.Qd1 (16.Bd4!? Qd4 17.Qc7+/–) 16...Qd6 17.Nec4 Qc5 18.Rc1 Rfd8 19.Ne3 Qa5?? (19...Qe5 20.Bd4 Qd4 21.Rc7=) 20.Ndc4?? (better is 20.Rc7 Bc5 21.Rb7+-) 20...Qa4 21.Qa4 Ra4 22.Rc3?? Ne2–+ 23.Kh1 Nc3 24.Bc3 Ba3 25.Ra1 Rda8 26.Nc2 Bc5 27.Ra4 Ra4 28.Bf3 Bf2 29.Kg2 Bc5 30.h3 Ra8 31.Be5 Ne8 32.d4 Bd6 33.Bd6 Nd6 34.N4e3 Ra2 35.g4 Be4 36.Be4 Ne4 37.Kf3 Nd2 38.Kg3 Nc4! 39.Nb4 Ra4 40.Nc4 Rb4 41.Ne5 Rd4 42.h4 b5 43.Kf3 b4 44.Ke3 Rd5 45.Nf3 b3 46.Nd2 Rd2! 47.Kd2 c5 48.Kc3 c4! 49.Kb2 e5 50.Kc3 f6 51.Kb2 g6 52.Kc3 Kg7 53.Kb2 h5 54.Kc3 hg4 55.Kb2 g3 56.Kc3 g2 57.Kb2 g1Q 58.Ka3 Qb6 59.Kb2 Qd4 60.Ka3 b2 61.Kb4 Qd2 62.Kc5 b1Q 63.Kc6 (63.Kc6 Qbb4 64.Kc7 Qdd6 65.Kc8 Qbb8) 0–1. sagonek – sefika, kurnik, 2011.

4.ba5 e5=.

4.b5 e5 5.Nc3=.

4.b5 e6 5.e3 Be7 6.c4 0-0 7.Be2 Ne4 8.0-0+= d5 9.Qc2 c6 10.d3 Nc5 11.Nbd2 dc4 12.dc4 Nbd7 13.Rfd1 Qc7 14.Rac1 b6 15.Ne4 h6 16.Nd4 Nb8 17.bc6+- Re8?? 18.Nb5 Qc6 19.Bf3 Ra6 20.Nf6! Bf6 21.Bc6 (21...Nc6 22.Bf6 gf6 23.Nc7+-) 1–0. Kossobudzki,Robert – Kusmierek,Jozef, corr 2. AMM, Poland, 1993.

4.Nc3 d5=.

4.Nc3 Bf5=.

4.c4 e5 5.a3=.

4.d3 a5 5.ba5 Ra5 6.e4 g6 7.Be2 Bg7 8.0-0 0-0 9.Nbd2 e5 10.Nc4 Ra8 11.a4 Na6 12.Ba3 Nc5 13.Bc5 dc5 14.Qb1 Qe7 15.Nb6 (< 15.Nce5 Nh5 16.Nc4 Ba1 17.Qa1 b5–/+) 15...Rb8 16.h3 Nd7 17.Nc4 f5 18.Qb3 Kh8 19.Ne3 f4 20.Nc4 h6 21.a5 Kh7 22.Nb6 Nb6 23.Qb6 g5 24.Nh2 Qf7 25.Bg4 Bg4+= 26.Ng4 h5 27.Nh2 Rg8 28.Qc5+- Qg6 29.f3 Bf8 30.Qc4 Be7 31.d4 ed4 32.a6 ba6 33.Ra6 Rbc8 34.Qd4 g4? 35.fg4+- hg4 36.Ng4 c5 37.Rg6 cd4 38.Rg8 Rg8? 39.Rd1 Bc5?? 40.Kf1 Rd8 41.Ke2 Kg6 42.Kd3 Kg5 43.Ne5 f3?? 44.Nf7 Kf4 45.Nd8 fg2 46.Ne6 Kf3 47.Nc5 Kf2 48.e5 g1Q 49.Rg1 Kg1 50.Nb3 (50.Nb3 Kh2 51.e6 Kg1 52.e7 Kg2 53.h4 Kg3 54.h5 Kf4 55.h6 Ke5 56.e8Q Kd6 57.h7 Kc7 58.Qe6 Kb7 59.Qd7 Ka6 60.h8Q Kb6 61.Qf6) 1–0. bratek55 – hits, kurnik, 2011.

4.d3 Nbd7 5.e4 Qc7 6.Nbd2 e5 7.Be2 b6 8.0-0 Bb7 9.c4 Be7 10.Qb3 0-0 11.d4 d5 12.de5 Ne4 13.cd5 Nd2 14.Nd2 cd5 15.Rac1 Qb8 16.f4 a5 17.a3 a4 18.Qg3 Re8? (18...Rc8 19.Bb5 Rc1 20.Rc1+- (20.Bc1?! Qc7+=)) 19.Nf3 f6 20.Bb5 Bc8?! 21.e6 Bd6 22.ed7 Bd7 23.Bd7 Bf4 24.Qg4 Re4 25.Qf5 Qd8 26.Qd5 Kh8 27.Qe4 (27.Qe4 Bc1 28.Rc1+-) 1–0. bratek55 (1670) – chess69man, kurnik, 2011.

4.d3 g6 5.e4 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0-0 5.e4 d6 6.Be2 c6).

4.g3 a6 5.Bg2 g6 6.d3 Bg7 7.Nbd2 0-0 8.Qc1 Nbd7 9.a3 e5 10.0-0 Qe7 11.Re1 Nh5 12.e4 Nb6 13.Qd1 f5 14.a4 Nf6 15.a5 Nbd7 16.Bc1 h6 17.ef5 gf5 18.Nf1 Kh7 19.Nh4 Nd5 20.Bd5 cd5 21.Qh5 Qf6 22.Rb1 Rf7 23.Ne3 Nf8 24.Neg2 Ng6 25.Bd2 d4 26.c3 dc3 27.Bc3 Bd7 28.Bd2 Bc6 29.Ng6 Qg6 30.Qg6 Kg6 31.Nh4 Kf6 32.d4 e4 33.Bf4 d5 34.Be5 Ke6 35.Bf4 Rf6 36.Be3 Rg8 37.Ng2 Kd7 38.Rec1 h5 39.h4 Bh6 40.Rc5 Be3 41.Ne3 Rd6 42.Nf5 Rf6 43.Ne3 Rgf8 44.Rb2 Rd6 45.Rd2 Rf3 46.Rdc2 Bb5 47.R2c3 Rc6 48.Kg2 Rc5 49.Rc5 Bc6 50.Kf1 Kd6 51.Kg2 Rf8 52.Nf1 Rb8 0–1. linakip – stihs, kurnik, 2011.

5.e3 e5 6.h3 Bh5 7.Nc3=.

5.e3 e5 6.h3 Bh5 7.d3=.

5.h3 Bf3 6.ef3 d5=.

5.h3 Bf3 6.ef3 e6=.

6.Bf6 ef6 7.d4 Qb6+=.

6.h3 Bf3 7.Qf3 Bg7+=.

7.0-0 0-0 8.Nc3 e5 9.d4 Qe7 10.b5 Rd8 11.Qb3 e4= 12.Nd2 Be2 13.Ne2 Nbd7 14.a4 Nf8 15.Rfc1 g5 16.Ng3+/– Qe6 17.Qc2 Re8 18.Rab1 Rac8 19.Qd1 d5 20.bc6 bc6 21.Ba3 Rb8 22.a5 g4 23.a6 h5 24.Nb3 dc4 25.Nc5+/– Qd5 26.Nb7 h4 27.Ne2 Ne6 28.Qc2 Qh5 29.Bd6 Ra8 30.Qc4+/– Rec8 31.Nf4 Nf4+/– 32.Bf4 Nd5 33.Bd6 Bh6 34.Qe2 Qg6 35.g3 hg3 36.hg3+/– Kh7 37.Kg2 Qh5? 38.Rh1+- Qf5 39.Rbc1?? Rg8 40.Rc5 Rg5 41.Rh4 Rag8 42.Kg1 Rh5 43.Rh5 Qh5 44.Rc6 Rg6 45.Rc5 Bg5 46.Qf1?? Bf6?? 47.Qg2 Qf5 48.Bf4 Be7 49.Qh1 Kg7 50.Be5 Nf6 51.Bf6 Qf6 52.Qe4?? Bc5= 53.Nc5 Qf3 54.Qe5 Kh7 55.Ne4 Qd1 56.Kg2 Ra6 57.Qh5 Kg8 58.Ng5 Rf6 59.Qh7 Kf8 60.Qe4?? Rh6–+ 61.Nh7 Kg7 62.Qe5 Kh7 63.Qf5 Kg7 64.Qg5 Rg6 65.Qe5 Kh7 (65...Kh7 66.Qf4 Qf3 67.Kf1 Qf4 68.gf4 a5–+) 0–1. Sutic,Darko (2070) – Topel,Zehra (2230), Open, Zagreb CRO, 2007.

7.0-0 0-0 8.d3 Nbd7 (8...a5 9.b5=) 9.Qb3 (9.h3 Bf3 10.Bf3 d5+=) 9...Qc7 (9...a5 10.h3 Bf3 11.Bf3 ab4 12.Qb4=) 10.Nbd2 (10.h3 Bf3 11.Bf3 a5=) 10...e5 (10...a5 11.h3 Bf3 12.Nf3 ab4 13.Qb4=) 11.h3 Bf3 (11...Be6 12.d4=) 12.Bf3 Ne8 (12...a5 13.a3+=) 13.Rac1 Kh8 (13...a5 14.b5+=) 14.b5 (14.d4 f5+=) 14...Nc5 (14...f5 15.Rb1+=) 15.Qa3 f5 (15...Ne6 16.Rb1+=) 16.bc6 bc6 17.d4 (17.Rb1 Kg8+=) 17...Nd7 18.de5 (18.Rb1 Nef6+=) 18...Ne5 19.Be2 Rb8 (19...Nf6 20.Rb1+=) 20.Bc3 (20.Rb1 Nf6+=) 20...Nf6 21.Rfd1 Nf7 22.Nf3 Ne4 23.Bg7 Kg7 24.Nd4 Rfe8 25.Bf1 Nc5 26.Nb3 Nb3 27.ab3 Qb6 28.Rd3 Qc5 29.Qa1 Kg8= 30.h4 Ne5=+ 31.Rdc3 Re7 32.Be2 Reb7 33.Qa2 Rb4 34.Rd1 a5 35.f4 Nf7=+ 36.Bf3 Qb6 37.c5 dc5=+ 38.Rdd3 Rb7 39.Kh2 Ra7 40.Qc2 Rb7 41.Rc5+/– Rb3?? 42.Rc6+- Qb5 43.Rb3 Qb3 44.Rc8 Kg7 45.Bb7 Qb7 46.Qc3 Kh6 47.Rc7 Qd5 48.Qf6 (48.Qf6 Qd8 49.Re7 (49.Qf7?! Qh4 50.Kg1 Qe1 51.Kh2 Qh4 52.Kg1 Qe1 53.Kh2 Qh4=) 49...Qe7 50.Qe7+-) 1–0. Yatsenko,A – Zebisch,P, Salekhard, 2003.

7.0-0 0-0 8.d4 Qb6 9.Qb3 Na6+=.

7.0-0 0-0 8.d4 c5 9.bc5 dc5 10.Qb3=.

7.0-0 0-0 8.d4 Nbd7 9.a4 (9.a3 c5=) 9...Qc7 (9...c5 10.bc5 dc5 11.a5=) 10.a5 (10.h3 Bf5=) 10...e5 (10...c5 11.Qb3=) 11.Nc3+= Rad8 (11...Rfe8 12.a6+=) 12.h3 Bf3 13.Bf3 a6 (13...Rfe8 14.Qd3+=) 14.Qa4 (14.b5 ab5 15.cb5 d5+=) 14...Ne8 (14...Rfe8 15.b5 ed4 16.ed4 ab5 17.cb5+=) 15.Rfd1 f5 (15...Nef6 16.b5+/–) 16.b5 e4 17.Be2 Nef6 18.ba6 (18.b6 Qc8+/–) 18...ba6+= 19.Ba3 c5 20.Rac1 Rb8 21.Nd5 Qb7 22.dc5 Nc5= 23.Bc5 dc5 24.Nf6 Bf6=+ 25.Rd6 Bd8 26.Rcd1 Rc8 27.Qa1+= Qa8? 28.Qe5+- Bc7?? 29.Qe6 Kh8 30.Rd7 Rce8 31.Re7 Qc8 32.Rdd7 Re7 33.Qe7 (33.Qe7 Rf7 34.Qf7 Bh2 35.Kh1 Qg8 36.Qf6 Qg7 37.Qg7; 33.Re7?! Qe6 (33...Ba5?? 34.Qe5 Rf6 35.Qf6 Kg8 36.Qg7) 34.Re6 Ba5 35.Ra6 Be1=) 1–0. Vaglio Munoz,J – Ramirez Alvarez,A, San Jose, 2001.

4.a3 a5 5.b5 Nb8 6.d4 c6 7.e3 cb5 8.Bb5 Bd7 9.c4 Bb5 10.cb5 Qb6 11.Qd3 Nd5 12.0-0 a4 13.e4 Nf4 14.Qc4 Nd7 15.Bc1 Ne6 16.Nc3 Ra5? 17.Qc8+- Nd8?? 18.Nd5 Qb5 19.Nc7# 1–0. Trkn – guest7478, ICC, 2004.

4.a3 e5 5.e3 Be6 6.c4 d5 7.Be5 dc4= 8.Bb2 Bd6 9.Qc2 Qe7 10.Bc4+/– Bc4 11.Qc4 Ne5? 12.Ne5 Be5 13.Be5 Qe5+/– 14.d4 Qh5 15.Qc7+- b6 16.Qc6 Nd7?? 17.Qa8 Ke7 18.Qh8 Qg6 19.0-0 Nf6 20.Rc1 Qh5 21.Rc7 Ke6 22.Qc8 Kd5 23.Nc3 Kd6 24.Qd8 Ke6+- 25.Rc6 Kf5 26.e4! Ne4 27.Ne4 Ke4 28.Re1 Kd3+- 29.d5 Kd2 30.Qe7 Qd5 31.Rd6 Qd6 32.Qd6 Ke1+- 33.f4 f5 34.Qe5 Kd2 35.Qd4 Kc2 36.Qf2 Kd1 37.Kf1 a5 38.ba5 g5 39.ab6 gf4 40.b7 f3 41.b8Q fg2 42.Qg2 Kc1 43.Qbb2 Kd1 44.Qgd2# 1–0. Popkirov,Stojan – Vincenz,Thomas, Schleswig Holstein–ch U11, 1997.

4.a3 e5 5.g3 Bg4 6.d3 Qd7 7.Nbd2 0-0-0 8.Bg2 Kb8 9.0-0 Bh3 10.e4 h5 11.Qe2 (11.Bh3!? Qh3 12.b5+=) 11...Bg2 12.Kg2 Be7 13.h4 Nh7 14.Rh1 g5 15.hg5 Ng5 16.Ng5 Bg5 17.Nf3 f6 18.c3 Rdg8 19.Bc1 (19.Kf1 Ne7=) 19...Bc1 20.Rac1 f5 21.ef5 Qf5 22.Qe4 Qe4 23.de4+= Rg7 24.Nh4 Ne7 25.Rcd1 Rhg8 26.Rd3 Rg4 27.Re3 c6 28.Nf5 Nf5 29.ef5 h4 30.Rf3 hg3 31.fg3 Rf8 32.f6 Rf7 33.Rh4 Rg6–/+ 34.g4 Rgf6 35.Rf6 Rf6 36.Kg3 Kc7 37.Rh7 Kb6 38.a4 e4 39.Re7 Rf3 40.Kg2 d5 41.Re5 Rc3 42.g5 Rf3 43.g6 Rf8 44.g7 Rg8 45.Rg5 a5 46.ba5 Ka5 47.Kf2 Ka4 48.Ke3 Kb4 49.Kd4 b6 50.Rg1 c5?? 51.Kd5 e3 52.Ke4? e2 53.Ke3 Re8 54.Kd2 c4 55.g8Q? Rg8 56.Rg8+- c3? 57.Ke1 Kb3 58.Rc8 c2? 59.Ke2 b5 60.Kd2 b4 61.Rc2 Ka3 62.Kc1 b3 63.Rb2 Kb4 64.Kd2 Kc4 65.Rb1 Kb4 66.Kd3 Ka3 67.Kc3 Ka2 68.Rb2 Ka1 69.Rb3 Ka2 70.Kc2 Ka1 71.Ra3# 1–0. giorgo – 79michas, kurnik, 2012.

4.a3 g6 5.b5 Nb8 6.Nc3 (6.Bf6 ef6 7.e3 a6=) 6...Bg7 7.e3 0-0 8.Be2 c6 (8...a6 9.a4=) 9.0-0 (9.a4 a6=) 9...a6 10.a4 ab5 (10...b6 11.d4=) 11.ab5+= Ra1 12.Qa1 Be6 (12...Bf5 13.Qa4+=) 13.Nd4 (13.Qa7 Qc8+=) 13...Bd7 14.Qa7 Qc8 15.Bf3 (15.Ra1 e5 16.Nf3 cb5+=) 15...d5 16.Na4 e5 17.Nb6 Qc7 18.Nd7 Nbd7 (18...Qd7!? 19.Nb3 e4+=) 19.Nc6! Re8 20.Qa5 Qc8 21.Nb4 b6 22.Qa7 Qc4 23.Nd5!+- Nd5 24.Qd7 Nf6 25.Qc6 Qb4 26.Bc3 (26.Bc3 Qa4 27.Qb6 Qc2 28.Bc6+-) 1–0. marre – oppo, internet, 2010.

4.b5 Na5=.

4.b5 Nb8 5.e3 e5 6.Nc3 Be7 7.d4 ed4 8.Nd4 0-0 9.Bd3 Nbd7 10.Nf5 Nc5 11.Ne7 Qe7 12.0-0 Nd3 13.Qd3 Bd7 14.a4 a6 15.Nd5 Nd5 16.Qd5 c6 17.bc6 Bc6 18.Qd4 Qg5 19.g3 Rad8 20.f4 Qg6 21.f5 Qg5 22.h4 Qg3 0–1. OnlyPolishOpening (1760) – Eric_Saldana, lichess.org, 2020.

4.b5 Ne5 5.Ne5 de5 6.Be5 Qd5 7.Bb2 Qb5= 8.e4?? (better is 8.Bf6 ef6 9.Nc3=+) 8...Qb2–+ 9.Nc3 Qb6 10.Bc4 e6 11.0-0 a6 12.Rb1 Qc6 13.Bb3 Bd6 14.d4?? 0-0 15.e5 Nd5 16.ed6?? Nc3–+ 17.Qd3 Nb1 18.Rb1 cd6 19.c4 b6 20.d5 ed5 21.cd5 Qd7 22.h3 g6 23.Qd4 Qb7 24.h4 Bf5 25.Re1 Rac8 26.h5 Rc5 27.h6 f6 28.g4 Bc8 29.g5 fg5 30.Re3 Rf4 31.Re4 Rc1–+ 32.Kh2 Rh4! 33.Kg3 Rg1 34.Kf3 Qf7 35.Ke2 Re4 36.Qe4 Bg4 37.f3 Bf5 38.Qe3 Rh1 39.Qg5 Qe8 40.Kd2 Qe1 0–1. bratek55 (1645) – tiger11511 (1665), kurnik, 2011.

4.b5 Ne5 5.Ne5 de5 6.Be5 Qd5 7.Bf6 ef6 8.e3 Qe5 9.d4 Qe4 10.Qd3 Qg4 11.h3 Qg5 12.Nd2 Bf5 13.Qc4 Bd6 14.Nf3 Qg6 15.Nh4 Qg5 16.Nf5 Qf5 17.Bd3 Qg5 18.0-0 0-0 19.f4 Qh5 20.Be2 Qh4 21.Bf3 Rab8 22.Kh2 f5 23.g3 Qf6 24.e4 fe4 25.Be4 Rfd8 26.Rae1 Bf8 27.c3 c6 28.Qd3 h6 29.a4 cb5 30.Qb5 a6 31.Qe5 Qb6 32.Qf5 g6 33.Qg4 Qb2 34.Re2 Qc3 35.f5 g5 36.f6 Rd4 37.Qf5 Re4 38.Qe4 Bd6 39.Rf3 Qa1 40.Rd3 Bc5= 41.Re1 Qf6 42.Rf3 Qb2 43.Qe2 Qd4 44.Qe5 Qb2?? 45.Re2 Qc1?? 46.Qb8+- Kg7 47.Qe5 f6 48.Qf6 Kh7 49.Qf7 Kh8 50.Re8 Bf8 51.Rf8 1–0. bratek55 (1735) – tiger11511 (1705), kurnik, 2011.

4.b5 Ne5 5.Ne5 de5 6.Be5 Qd5 7.Bf6 gf6 8.e3 f5 9.c4 Qe5 10.d4 Qf6 11.Nc3 Bh6 12.Nd5 Qd6 13.Qh5 Rg8 14.c5 Qd5 15.Qh6 Rh8 16.Qg7 Rf8 17.Qh7 a6 18.ba6 ba6 19.Qh5 a5 20.Qd1 Ba6 21.Qa4 c6 22.Qa5 Bb7 23.Qc7 f6 1–0. Bonetti,Shane – guest405, ICC, 2002.

4.a3 e5 5.e3 Be7 6.c4 0-0 7.d4 e4 8.Nfd2 c6 9.Qc2 d5 10.Nc3 Re8 11.Rc1 Bf8 (11...a5!? 12.b5 Nf8=) 12.cd5+= cd5 13.Nb5 Rb8 (13...Re6 14.Na7 Nb6 15.Nc8+=) 14.Nc7 (better 14.Na7!? Nb6 15.Qc7 Qc7 16.Rc7+=) 14...Re7= 15.Nb5 Nb6 (15...a6!? 16.Nc7 Nb6=+) 16.Na7+= Bd7 17.Nb5 Re6 (17...Rc8 18.Qb1+=) 18.Qc7 Rc6 (18...Na4 19.Qd8 Rd8 20.Ba1+=) 19.Qd8 Rc1 20.Bc1 Rd8 21.Nb3 h6 22.Be2 Na4 23.Nc5 Nc5 (23...Bc5 24.dc5 Bb5 25.Bb5+/-) 24.dc5+- Bb5 25.Bb5 d4 (25...Ne8 26.Ba4+-) 26.ed4 Rd4 27.Be3 (27.Bb2 Rd8+-) 27...Rd8 28.Ke2 Ng4 (28...Nd5 29.Rc1+-) 29.h3 Ne3 30.Ke3 f5 31.Bc4 (31.g4!? fg4 32.hg4 g6+-) 31...Kh7+/- 32.h4 (32.Ke2 Ra8+-) 32...g6 33.Be2 (33.h5!? Be7 34.Ke2+/-) 33...Bg7 34.Rd1 (34.f3 Bd4 35.Kf4 Re8+=) 34...Ra8 35.b5 (35.Rd7 Ra3 36.Kd2 Kh8+=) 35...Ra3= 36.Kf4 (36.Kd2 f4=) 36...Rc3 (36...Ra2 37.Bf1 Rf2 38.Ke3-/+) 37.Rd5 (37.Rd7 Rc5 38.f3=+ (worse 38.Rb7 Rc2 39.Ke3 f4 40.Kf4 Re2-+)) 37...Bf8?? (better 37...Rc2 38.Bd1 Rf2 39.Ke3 Rg2-/+) 38.Rd7+= Kg8 (38...Bg7 39.c6 bc6+/-) 39.Rb7 (better 39.c6!? bc6 40.b6+=) 39...Bc5= 40.h5?? (better 40.Ke5 Rc2 41.Bd1 Rf2 42.h5 gh5 43.Rc7=) 40…Bd6 0-1. diotarolo (2080) - Kasparova (1990), Rated Blitz game, lichess.org, 2014.

4.b5 e5 5.d3 Be7 6.e4 c6 7.a4 a6 8.d4 (8.Be2!?+=) 8...ab5 9.ab5 Ra1 (9...Ne4?? 10.Ra8 d5 11.de5 (11.Ne5?! Ne5 12.de5 Bb4 13.c3 Bc5+-) 11...Bb4 12.Nfd2+-) 10.Ba1 c5 (better is 10...Ne4!? 11.Bd3 Qa5 12.Nbd2 Nd2 13.Nd2 Bg5–/+) 11.de5= de5 12.Ne5 (12.Nbd2 Qa5 13.Ne5 Ne5 14.Be5 Ne4+=) 12...Ne5 (12...Ne4!? 13.Nd2 Nd2 14.Qd2 0-0=) 13.Qd8+= (worse is 13.Be5 Qd1 14.Kd1 Ne4=) 13...Bd8 14.Be5 0-0 (14...Ne4 15.Bg7 Rg8 16.Be5+=) 15.f3+/– Re8 16.Bb2 (16.Bd6 Ba5 17.Kf2 Bb6+/–) 16...Ba5 (better is 16...Ne4!? 17.fe4 Re4 18.Kd2 Bg5 19.Kc3 Rb4–/+) 17.Bc3 Bc3 18.Nc3 b6 (18...Be6 19.Be2+/–) 19.Bc4+- Be6 20.Bd3 (20.Be6 fe6 21.Kf2 Kf7+-) 20...Ra8 21.0-0 (21.Kd2 Nh5+/–) 21...Ra3 22.Ne2?? (better is 22.Nb1 Ra4 23.e5+/–) 22...c4–/+ 23.e5 (better is 23.Rd1!? Ne8 24.Nd4 cd3 25.cd3–+) 23...cd3–+ 24.cd3 Nd5 25.Rc1 (25.d4 Kf8–+) 25...Rd3 26.Ra1 f6 (26...h6 27.Ra7–+) 27.Ra8 (27.ef6 gf6 28.Kf2 Bd7 29.Ra8 Kf7–+) 27...Kf7 28.Ng3 (28.Ra7 Kg6 29.ef6 gf6–+) 28...g5 (better is 28...Rd1 29.Kf2 Rd2 30.Kg1–+) 29.ef6 (29.Ne4 Bf5–+) 29...Kf6 (29...Rd1 30.Kf2 Rd2 31.Kg1–+) 30.Ne4 Kg6 31.Re8 Bf5 (31...Bd7 32.Rg8 Kf7 33.Rg5–+) 32.Rg8 (32.Rd8–+) 32...Kh5?? (better is 32...Kf7 33.Rg5 Be4 34.fe4 Nf6–+) 33.Ng3 Kh4 34.Nf5 (34.Nf5 Kh5 35.g4) 1–0. overtoom – scoutyscout, gameknot.com, 2013.

4.c4 a6 5.a4 (5.Nc3 e5=) 5...b6 (5...e5 6.Nc3=+) 6.g3 (6.Nc3 e5=) 6...Bb7 (6...d5 7.Bg2=) 7.Bg2 c5 8.b5 e6 9.0-0 Be7 10.d4 (10.Nc3 0-0=) 10...d5 (10...0-0 11.Nc3=) 11.dc5 Nc5 12.Nbd2 (12.cd5 Bd5 13.Nc3 0-0=) 12...0-0=+ 13.Ne5 (13.Bd4 Qc7=+) 13...Qc7 14.Rc1 ab5 15.ab5 Rfd8 16.cd5 (16.Bd4 Ra2=+) 16...Bd5 (16...Nd5 17.Nec4 Ra2=+) 17.e4 (17.Nc6 Bg2 18.Kg2 Rd5=+) 17...Bb7 (17...Nfe4!? 18.Ne4 Be4–/+) 18.Qc2 Rac8 (18...Ra5 19.Rfd1–/+) 19.f3 (19.Rfd1 Qb8=+) 19...Qb8 (19...Ne8!?=+) 20.Ndc4= h6 21.Qe2 Ncd7 22.Bd4 Bc5= 23.Bc5 Rc5 24.Nd7 Rd7 25.Nb6+/– Rdc7 26.Rc5 Rc5 27.Rd1?? Qc7?? 28.Na4+= Rc2 29.Qd3+/– Rc4 30.Qd8+- Qd8 31.Rd8 Kh7 32.Nb6 Rc7 33.Na8 Ba8 34.Ra8 Rc1 35.Bf1 Rb1 36.Rb8 Kg6 37.Kf2 Nd7 38.Rd8 Nc5 39.Rd6 Rb2 40.Be2 Na4 41.Rc6 Kf6 42.f4 Rb4 43.Ke3 g6 44.h4 h5 45.f5! Rb3 46.Kf4 gf5 47.ef5 Rb4 48.Rc4 e5 49.Ke3 Rc4 50.Bc4 Kf5 51.Bf7 Kg4 52.Kf2 e4 53.Bg6 e3+- 54.Ke3 Kg3 55.Bh5 Kh4 56.Bf7 Kg5 57.Kd4 Kf6 58.Kc4?? Kf7= 59.b6 ½–½. carrafurca (2000) – vampirex (2155), net–chess.com, 2005.

4.c4 b6 5.d4 Bb7 6.e3 g6 7.Nbd2 Bg7 8.Bd3 e5 9.d5 0-0 10.0-0 c6 (10...Qe7 11.e4+=) 11.e4 Nh5 12.g3 (12.dc6 Bc6 13.Qc2 Nf4=) 12...cd5= 13.cd5 f5 14.h4 (better is 14.ef5!? gf5 15.Nd4 ed4 16.Qh5=) 14...fe4=+ 15.Be4 Ndf6 16.Ng5 Qd7 (< 16...Bd5 17.Bd5 Nd5 18.Qb3=) 17.Qb3 Ne4 18.Nde4 Nf6 19.Nf6 (19.f3 a6=+ (< 19...Nd5 20.Rad1 Kh8 21.Rd5 Bd5 22.Qd5+-)) 19...Bf6 20.Ne6 Rfe8 21.Rfd1 Rac8 22.a3 Bd5!–/+ 23.Qd5 Re6 24.f4 Qf7 25.fe5 de5 26.Re1 Rc2–+ 27.Qb3 Rb2! 28.Qb2 e4 29.Qf2 e3–+ 30.Qf1? e2 31.Qf2 Qd7 32.Kh2 Ba1 33.Ra1 Qd1 34.Qg1 Qg1 (34...Qg1 35.Kg1 e1Q 36.Re1 Re1 37.Kf2 Ra1–+) 0–1. pumpkin (2325) – pe (2365), net–chess.com, 2006.

4.c4 e5 5.Qc2 b6 6.Nc3 Bb7 7.e4 a5 8.b5 Nc5 9.d3 a4 (9...Be7 10.g3=+) 10.Ba3 (10.Nd5 g6=) 10...Nfd7 (10...Qe7 11.g3=) 11.g3 (11.Be2 g6+=) 11...g6 12.Bg2 Bg7 13.0-0 0-0 14.Rad1 (14.Rab1 Ne6+=) 14...Re8 15.Ne1 (15.Rb1 Nf6=) 15...Ne6 (15...Ra7 16.Nf3=) 16.Ne2 (16.Nf3 Nec5=) 16...Nf6 (16...Ndc5 17.Nf3=+) 17.h3 (17.Nf3 Nc5=) 17...g5 (17...Qd7 18.Nf3=) 18.Bc1 Kh8 (18...h5 19.Nf3 Nh7 20.Be3=) 19.Nf3+= h6 20.h4 (20.Nc3!?+=) 20...g4= 21.Nh2 c6 (21...Qd7 22.f3 gf3 23.Rf3+=) 22.bc6 Bc6 23.f3 (23.d4 Nd4 24.Nd4 ed4+-) 23...gf3 24.Rf3 (24.Nf3 b5 25.Nc3 Qb6 26.Kh1 b4=) 24...b5 25.cb5 Bb5 26.Rdf1 (better 26.Be3=) 26...Nc5 27.Bh6 (27.Nc3!? Bd7 28.Qf2+=) 27...Bh6= 28.Rf6 Be3 (28...Re6 29.R6f3 Qb6 30.Rb1+= (30.Rf7? Bd3 31.Qd1 Ne4 32.R7f2 Nf2 33.Rf2 Rf8–+)) 29.Kh1+= Bd3 30.Qd1 Re6? (30...Rb8 31.Nc3 Re6 32.Qh5 Bh6 33.Qh6 Kg8 34.Qg5 Kh8 35.Qh5 Kg8 36.Qg4 Kh8 37.Rf7 Qg5 38.Qg5 Rg6 39.Qg6 Bf1 40.Qg7) 31.Re6 (31.R6f3 Be2 32.Qe2 Bh6 33.Rf7 Qg8+-) 31...fe6 32.Ng4?? (better 32.Rf3 Bh6 33.Rd3 Nd3 34.Qd3+-) 32...Bf4 (32...Bd4 33.Rf6 Qe7 34.Nd4 ed4 35.Qd2+-) 33.gf4 (33.Rf3 Be4 A) worse 34.gf4 Qh4 35.Kg1 Bf3 (35...Qg4? 36.Rh3 Bh7 37.Rg3+-) 36.Bf3 e4 37.Qd4 e5 38.fe5 Qe1 (38...ef3 39.ed6 Kg8 40.Nf6 Qf6 41.Qf6 fe2 42.Qg5 Kh8 43.Qh5 Kg7 44.Qe2+-) 39.Kh2 ef3 40.ed6 Kh7 41.Nf6 Kg6 42.Nf4 Kf7–/+; B) 34.Nf4+-) 33...Qh4= 34.Nh2 Rg8 35.Qd2 Be4 (35...Rg2 36.Kg2 Be4 37.Kg1+=) 36.Be4 Ne4 37.Qe3 Nf6 38.Qf2 Qh3 (38...Qh7 39.fe5 Ng4 40.Qg3 Ne5 41.Qf4=) 39.Qf3 Qh4 (39...Qh7 40.Rg1 Rg1 41.Kg1 Qg6 42.Kf1+=) 40.Rg1 (40.fe5 Ng4 41.Qg3 Qg3 42.Ng3 Ne5+=) 40...e4= 41.Qc3 Rg1 42.Kg1 Kh7 (42...e3 43.Kh1+= (worse 43.Qe3 Qh2 44.Kh2 Ng4 45.Kg3 Ne3=)) 43.Kg2 (better 43.Nf1 Kg6 44.Qc2+=) 43...e5 (better 43...e3=) 44.Qc7+- Kg6 (44...Kh6 45.Qd6 ef4 46.Nf4 Qg5 47.Kf2 Qh4 48.Kf1+-) 45.Qd6+- e3? (better 45...ef4 46.Nf4 Kf5+-) 46.fe5 Qf2 47.Kh3 (47.Kh1 Qe2 48.Qf6 (48.ef6 Qe1 49.Nf1 Qf1 50.Kh2 e2 51.f7 Kf7 52.Qd5 Kg6 53.Qe4 Kf6 54.Qd4 Kf5 55.Qd7 Ke5 56.Qe8 Kf6 57.Qf8 Kg5 58.Qe7 Kf4 59.Qc7 Kf3 60.Qb7 Kg4 61.Qg7 Kh5 62.Qh7 Kg4 63.Qg7 Kh4 64.Qh6 Kg4 65.Qg7=) 48...Kh7 49.Qf7 Kh6 50.e6 Qd1 51.Kg2+-) 47...Qf5= 48.Kg2 Qf2 49.Kh1 Qe1 (49...Qe2 50.Qf6 Kh7+-) 50.Ng1 Qf2 (50...Qh4 51.Qf6 Qf6 52.ef6 Kf6+-) 51.Nhf3 e2 52.Qf6 Kh7 53.Ng5 (53.Ng5 Kg8 54.Qf2 Kg7 55.Qf6 Kg8 56.Qf7 Kh8 57.Qh7) 1–0. Rodriguez – Dib Ashur, Salta, 1993. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 Nbd7)

4.c4 g6 5.e3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 Nbd7) .

4.c4 g6 5.e3 Bg7 6.Be2 0-0 7.0-0 e5 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Nbd7).

4.d3 e5 5.e4 g6 6.Be2 Bg7 7.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0-0 5.e4 d6 6.Be2 Nbd7 7.0-0 e5).

4.d4 g6 5.e3 Bg7 6.Be2 0-0 7.0-0 c6 8.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d6 7.0-0 Nbd7 8.d4) .

4.e3= a6 5.c4 g6 (5...e5 6.Nc3=) 6.Nc3 Bg7 7.d4 b6 (7...0-0 8.Bd3+=) 8.Bd3 Bb7 9.d5 c6 10.e4 Ng4 (10...0-0 11.0-0=) 11.Ng5 (11.0-0 Nge5+=) 11...h6 (11...Nge5 12.Be2 h6 13.Nh3=) 12.Nf7 (12.Qg4 hg5 13.Qg5 Ne5+/–) 12...Kf7 (better is 12...Nf2!? 13.Nd8 Nd1 14.Nd1 Bb2 15.Nb2 Kd8=) 13.Qg4+/– Ne5 14.Qg3 g5 (14...b5 15.cb5 Nd3 16.Qd3 ab5 17.Qf3 Kg8 18.0-0+/–) 15.Be2+- Bf6 (15...Rf8 16.h4 e6 17.Rc1+-) 16.Bh5 (16.0-0 Ke8+-) 16...Kf8 (16...Kg7!? 17.Ne2 Nc4+/–) 17.Ne2 c5 18.Be5 Be5 19.Qf3 Bf6 20.Rb1 Bc8 21.bc5 bc5 22.0-0 Rg8 23.e5 de5 24.d6 Ra7 25.Rb8 ed6?? 26.Rc8! (26.Rc8 Kg7 27.Rd8 Bd8 28.Qf5+-) 1–0. Buczinski,Henryk – Stefanik,Augustyn, Siemianowice Slaskie, 1967.

4.e3 c6 5.Nc3 e5=.

4.e3 c6 5.c4 Qc7 (5...Qb6 6.d4=) 6.Be2 e5 (6...a5 7.b5+=) 7.0-0 Be7 8.Nc3 h6 9.a4 Nf8 10.d4 e4 (10...Ng6!?+=) 11.Nd2+- d5 (11...Bf5 12.Qc2+-) 12.cd5 cd5 13.Qb3 Be6 (13...Qd6 14.Rfc1 Bd7 15.Ba3+-) 14.Rac1 Qd7?? (better 14...Qd8 15.Nb5 Rc8 16.Na7 Rc1 17.Rc1 Ng6+-) 15.Bb5 1–0. GuestGQXC – GuestRNGP, freechess.org, 2019.

4.e3 c6 5.Be2 Qc7 6.0-0 e5 7.c4 Be7 8.d3 0-0 9.Nbd2 a5 10.a3 ab4 11.ab4 Ra1 12.Qa1 d5 (12...b6 13.b5=) 13.Ne5 (13.c5 b6 14.Ne5 bc5 15.Nd7 Bd7 16.bc5 Qb7+/-) 13...Ne5 (better 13...Bb4!? 14.Rd1 Nb6+=) 14.Be5+- Qb6 15.Rb1 Be6 (15...dc4 16.dc4 Qa6 17.Qa6 ba6 18.Nf3+-) 16.c5+- Qd8 17.Nf3 Ne8 (better 17...Re8+-) 18.Bg7?? (better 18.Qa7 Bc8 19.b5 cb5 20.d4+-) 18...Ng7=+ 19.d4 Bf5 20.Rb3 b5 21.Ne5 Qc8 22.Ra3 f6 23.Nf3 Ne6 24.Ra7 Re8 (24...Qe8 25.Qc3=+) 25.Nh4= Bg6 26.Ng6 (26.Qa6 Kf8=+) 26...hg6=+ 27.Bg4 f5 28.Bf3 Ng5 29.Be2 Ne4 30.g3 Bf6 31.h4 (31.Qa6 Qe6 32.Qb7 Re7 33.Qa8 Kf7-+) 31...Rf8 (better 31...f4!? 32.ef4 Nc5-+) 32.Qa6=+ Qa6 33.Ra6 Rc8 34.Kg2 Nd2?? (34...Kf7 35.Bd3=+) 35.Bd1?? (better 35.Bb5 cb5 36.Rf6+-) 35...Nc4=+ 36.Kf3 Rc7 37.Kf4 Kf7 38.g4? (38.Bc2 Nd2=+) 38...fg4 (38...Bh4 39.Ra2 g5 40.Kf3-+) 39.Bg4? (better 39.Kg4!? Nd2 40.Bc2-/+) 39...Bh4-+ 40.Be2?? (40.Kf3-+) 40...Bf2 41.Bc4 dc4 0-1. dannysmet (2030) - Unicejo (2055), Rated Blitz game, lichess.org, 2020.

4.e3= e5 5.a3=.

4.e3 e5 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nf3).

4.e3 e5 5.c4 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7).

4.e3 e5 5.d4 e4 6.Nfd2 d5 7.a3 Bd6 8.c4 c6 9.c5 Bc7 10.Be2 Nf8 (10...0-0 11.Nc3=) 11.Qb3 (11.Nc3 Ne6=) 11...Ng6 12.Qc2 0-0 13.f3 (13.0-0 Ng4 14.h3 Nh2-/+) 13...Bf5 14.fe4 (14.f4 Bg4=+) 14...Ne4 15.Ne4 (15.0-0 Nh4 16.Rf5 Nf5 17.Ne4 de4 18.Qe4 Qg5-+) 15...Be4 (worse 15...de4 16.g3=+) 16.Bd3 Qh4 17.Kd2 (17.Kf1 Rae8-+ (17...Bh2?! 18.Be4 de4 19.Nc3=)) 17...Qf2 (17...Bg2 18.Re1-+) 18.Kc3 Qe3 (better 18...Qc2 19.Kc2 Bg2-+) 19.Nd2?? (better 19.Bc1 Bd3 20.Be3 Bc2 21.Kc2-+) 19...Nf4 (worse 19...Bg2 20.Nf1 Qh3 21.Rg1-+) 20.Rae1 (20.Ne4 de4 21.Rae1 Nd5 22.Kb3 Qd3 23.Qd3 ed3 24.Rd1-+) 20...Qf2 (better 20...Qd3 21.Qd3 Nd3-+) 21.Be4 (better 21.Ne4 Qc2 22.Bc2 de4 23.Be4+=) 21...de4-/+ 22.Ne4 Nd5 23.Kb3 Qc2 (23...Qh4!?-/+) 24.Kc2= a5 (24...Rfe8 25.g3=) 25.ba5 (25.Nc3 ab4 26.Nd5 cd5 27.ab4 Rfe8+=) 25...Ra5 (25...Ba5 26.Re2=) 26.Nc3 Nc3 27.Kc3 Raa8 (27...f5 28.Re7 Rf7 29.Re8 Rf8 30.Re3=) 28.Re7+= Ba5 (28...Rac8 29.Rb1+=) 29.Kc4 (29.Kd3 Rab8+/-) 29...b5 (29...Ra7 30.Kd3+=) 30.cb6+/- Bb6 31.Rb7 Rfb8 32.Rb8 Rb8 33.Rc1 (33.Re1 h5+/-) 33...f6 (33...Bc7 34.Bc3=) 34.h3 Kf7 35.Kd3 (35.Bc3 Ra8 36.Rb1 Ra6+=) 35...Rc8 (35...Ba5 36.Rc2+=) 36.g4 Ke6 37.Re1 (37.a4 Kd7+=) 37...Kd6 38.Kc4 Ra8 39.Re3 Ra4 40.Kd3 Kd5 The pressure on the isolated pawn grows (better 40...g6=) 41.Re4 (41.Re7 Ra7 42.Ra7 Ba7+=) 41...c5 (better 41...Bc5!?-/+) 42.Re7= c4 (worse 42...cd4 43.Rd7 Ke5 44.Rg7+=) 43.Kd2 Ra7 44.Re8 (44.Ra7 Ba7 45.Ke3 g6=) 44...Rc7 (44...Rd7 45.Ke3 g5=+) 45.Bc3 (better 45.Rb8!? Rc6 46.Rb7=) 45...Kc6?? (better 45...Rd7-/+) 46.Re6+/- (46.Re6 Kb7 47.a4+/-) 1-0. Dino_Jarach (1840) - Warlock1 (1840), lichess.org, 2019.

4.e3 g6 5.Bc4 (5.Nc3 a5 6.a3 Ne5=) 5...Bg7 6.Bf7 (6.Bf7 Kf7 7.Ng5 Kg8 8.Ne6–+). Bonetti,Shane – "Schlechter" (1800), ICC, 2002.

4.g3 e5 5.d3 Be7 6.Bg2 0-0 7.0-0 c6 8.a3 Qc7 9.Nbd2 d5 10.c4 d4 11.Nb3 Rb8 12.Bc1 b6 13.Bg5 c5 14.b5 a6 15.a4 a5 16.Qc1 Bb7 17.Nbd2 Rfe8 18.Re1 e4 19.de4 Ne4 20.Be7 Re7 21.Ne4 Be4 22.Nd2 Bg2 23.Kg2 Rbe8 24.Qd1 Ne5 25.f4 Qb7 26.Kh3 Qd7 27.Kg2 Ng4 28.Nf3?? Ne3 29.Kf2 Nd1 30.Rad1 Qh3 31.Kg1 Re2 32.Ng5 Qg2# 0–1. giorgo (1615) – bonames145, kurnik, 2012.

4.g3 g6 5.Bg2 Bg7 6.0-0 0-0 7.d3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0 e5 7.d3 Nbd7).

(--> 1.b4 e5 2.Bb2 d6 3.Nf3 Nf6).

4.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.Nf3).

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nf3).

4.c4 g6 5.e3 Nbd7 6.Be2 Bg7 7.d3 0-0 8.0-0 Re8 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Re8 8.0-0 Nbd7).

4.d3 Be6 5.e4 (--> 1.b4 e5 2.Bb2 d6 3.e4 Be6 4.Nf3 Nf6 5.d3).

4.d3 Be6 5.e4 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.Nf3 Nf6 4.d3 Be7 5.e4 0-0 6.Be2 Be6).

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3).

4.e3 a6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6 5.Nf3).

4.e3 Be7 5.Be2 0-0 6.c4 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

4.e3 Be7 5.Be2 0-0 6.c4 Bg4 7.Nc3 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3 Nbd7).

4.e3 g6 5.c4 Bg7 6.d4 ed4 7.ed4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.ed4).

4.e3 g6 5.Be2 Bg7 6.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5).

4.e3 g6 5.Be2 Bg7 6.c4 0-0 7.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0 7.Be2).

4.e4 (--> 1.b4 e5 2.Bb2 d6 3.e4 Nf6 4.Nf3).

4.g3 Be7 5.d3 0-0 6.Bg2 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 Be7 5.d3 0-0 6.Ngf3).

4.d3 Nbd7 5.e4 Bg6 6.Nbd2 e5 7.a3 Be7 8.g3 (8.Be2 Nb6=) 8...0-0 9.Bg2 c6 10.0-0 Rc8 11.Re1 a6 12.h3 b6 13.d4 ed4 14.Nd4 c5 15.bc5 bc5 16.Nf5 Ne4?? (better 16...Bf5 17.ef5 c4=) 17.Re4 (better 17.Ne7 Qe7 18.Ne4 Qd8+-) 17...Kh8?? (17...Bf5 18.Re1-/+) 18.Bd4 (better 18.Bg7 Kg8 19.Bf8 Bf8 20.Rf4+-) 18...cd4 (better 18...Bf5 19.Rf4 Be6-/+) 19.Ne3?? (better 19.Ne7 Be4 20.Nc8 Bg2 21.Kg2 Qc8 22.Nb3=+) 19...de3 20.Kh1 (20.Kh1 ed2 21.Re2-+). opperwezen (2745) - GRANPERUANO (2175), lichess.org, 2017. (=1.Nf3 Nf6 2.b4 d6 3.Bb2)

4.e3 Nc6 5.b5 Nb4 6.d3 e5 (better is 6...Bg4!?+=) 7.a3+/– Bd7? (better is 7...Nbd5!? 8.e4 Ne4 9.de4 Be4+/–) 8.ab4+- Bb5 9.Be2 Qd7 10.c4 Bc6 11.b5 Bf3 12.Bf3 c6 13.bc6 bc6 14.Ra6 Rc8 15.Qa4 d5 16.Be5 c5 17.Qa1 Be7 18.Ra7 Qf5 19.cd5 Qd3 20.d6! 0-0 21.de7 Rfe8 22.Nd2 c4 23.Bf6 c3 24.Bc3! Qc3 25.Qc3 Rc3 26.Ra8 Ra8 27.Ba8 Rc8 28.Bc6 1–0. pierred (2695) – gsmelt (2220), net–chess.com, 2008.

4.e3 e5 5.a3=.

4.e3 a5 5.h3 Bh5 6.b5 Nbd7 7.Be2 e5 8.d3 Be7 9.g4 Bg6 10.Nh4 Nc5 11.Ng6 hg6 12.c4 Nfd7 13.Nc3 Bh4 14.d4 ed4 15.ed4 Qf6 16.dc5 Bf2 17.Kd2 Nc5 18.Kc2 Bd4 19.Nd5 Qe5 20.Bd4 Qe4 21.Kc3 Na4 22.Qa4 1–0. Bonetti,Shane – the_sicilian (1655), ICC, 2002.

4.e3 c6 5.Be2 Nbd7 6.0-0 e5 7.d4 Bf3 8.Bf3 e4 9.Be2 Qe7 10.c4 h5 11.Re1 c5 12.bc5 dc5 13.d5 h4 14.h3 g6 15.Nd2 Bg7 16.Qc2 0-0-0 17.a4 Ne5 18.Ne4+- Ne4 19.Qe4 Nf3 20.Qf3 Bb2 21.Rab1 Be5 22.Red1 f5 23.Rd3 Qd6 24.Rdb3 b6 25.a5! g5?? 26.e4 g4 27.hg4 fg4 28.Qg4 Rd7 29.ab6 h3 30.g3 h2 31.Kh1 Qb6 32.Rb6 ab6 33.Rb6 Bd4 34.Qf5 Re8 35.Bg4 Ree7 36.Qf8 Kc7 37.Rc6 Kb7 38.Bd7 Rd7 39.Qh6 (39.Qh6 Be3 40.Rb6 Kc7 41.Qc6 Kd8 42.Rb8 Ke7 43.Qe6#; 39.Qc8 Ka7 40.Ra6#) 1–0. tadziczek – ayann, kurnik, 2012.

4.e3 Nbd7 5.h3 Bf3 6.Qf3 e5 7.Nc3 c6 8.e4 g6 9.Be2 Bg7 10.0-0 h5 11.Rab1 a6 12.a4 Qe7 13.Bc4 0-0 14.a5 Rac8 15.Rfe1 Rfe8 16.Ba1 Kh8 17.Kh1 Nf8 18.Na4 Ne6 19.Nb6 Rc7 20.Kg1 Nf4 21.d4 g5 22.de5 de5 23.Qg3 g4 24.hg4 Ng4 25.f3 Nf6 26.Qh2 Rg8 27.Kh1 Nd7 28.g3 Qg5 29.gf4 ef4 30.Rg1 Qh6 31.Bf7 Rf8 32.Rg7 Qg7 33.Qh5 1–0. pierre – frankmonik, internet, 2008.

4.e3 Bf3 5.Qf3 e5 6.c4 (6.Qb7!? Nbd7 7.b5+/-) 6...c6+= 7.Nc3 Nbd7 8.d4 (8.Be2 Qe7+=) 8...ed4 9.ed4 Be7 10.Bd3 (10.a3 Qb6+=) 10...0-0 (10...Qb6 11.0-0=) 11.0-0 Re8 12.Rfe1 Nf8 (12...Qb6 13.Rab1+/-) 13.d5 cd5 (13...N8d7 14.dc6 bc6 15.Ne4+/- (worse 15.Qc6 Ne5 16.Re5 de5=)) 14.cd5 (14.Nd5 Nd5 15.Qd5 Qc7+/-) 14...Ng6 15.Bg6 hg6 16.a4 Rc8 17.Rac1 a6 18.b5 Qa5 19.h3 (19.Re2 Nd7 20.Rce1 Ne5+/-) 19...Kf8 (19...Nd7 20.ba6 ba6 21.Re4=) 20.g4 (20.ba6!? ba6 21.Re3+=) 20...Nd7= 21.Qg3 Qb6 (21...Nb6 22.g5=) 22.Kg2 Bf6 (better 22...Ne5+=) 23.g5 (23.a5!? Qc5 24.Ne4 Qb5 25.Bf6 Rc1 26.Rc1 Nf6 27.Qd6 Kg8 28.Nf6 gf6 29.Rc5=) 23...Be5 (23...Re1!? 24.Re1 Bc3 25.Bc3 Qc5=+) 24.f4= Bd4 25.Qd3 ab5 (25...Re1 26.Re1 Qc5 27.ba6 ba6 28.Rc1=+) 26.ab5 (better 26.a5!? Re1 27.ab6 (worse 27.Re1 Qc5 28.Rc1 Re8=+) 27...Rc1 28.Bc1 Rc3 29.Qd4 Rc1 30.Kf3+=) 26...Re1= 27.Re1 Bc3 (27...Qc5 28.Rc1 Re8 29.Rc2=+) 28.Bc3+= Qc5 (better 28...Ra8+=) 29.Qd4?? (better 29.Rc1 Nb6 30.Bg7 Kg7 31.Rc5 Rc5 32.f5 gf5 33.Qf5 Nd5 34.Qd7+-) 29...Qd4 (better 29...Qc3 30.Qe4 Qb2 31.Kg1 Qb5 32.Qe7 Kg8 33.Qd6 Qd3-+) 30.Bd4= Rc2 (30...Rc4 31.Be3=) 31.Kf3 Rd2 32.Ke4 f5 33.gf6 Nf6 34.Bf6 gf6 35.Rg1 (35.Rc1 f5 36.Ke3 Rd5 37.Rc8 Ke7 38.Rc7 Ke6 39.Rb7 Rd1=) 35...Kf7 36.Rc1 f5 37.Ke3 Rd5 38.Rc7 Kf6 (38...Ke6 39.Rb7 Rd1 40.Rg7=) 39.Rb7 Rc5 40.Rd7 (40.Kd4 Ke6+=) 40...Rb5 (40...Ke6 41.Rg7 Rb5 42.Rg6 Kd5 43.Kf2=+) 41.Rd6= Kf7 42.Kf3 Rb3 43.Kg2 Re3 44.Rb6 Kg7 45.Rb7 Kh6 46.Rb8 Rd3 47.Rh8 Kg7 48.Rb8 Rd4 49.Kg3 Rd3 50.Kh4 Rf3 51.Rb7 Kh6 52.Rb4 Re3 53.Rb6 Re4 54.Kg3 Kh5 0-1. zembelek (2040) - osipov (1945), Rated Blitz game, lichess.org, 2014.

4.g3 Bf3 5.ef3 e5 6.Bg2 Nbd7 7.0-0 Qe7 8.Re1 0-0-0 9.a3 g6 10.d4 Bg7 11.de5 Ne5?? (better is 11...de5 12.f4 Rhe8+=) 12.f4+- Qd7 13.fe5 de5 14.Qd7 Rd7? (14...Nd7 15.Nd2+-) 15.Be5 Re8 16.Bc3 (better is 16.Bh3 Ng4 17.Bg4+- (17.Bg7 Re1 18.Kg2 f5–/+)) 16...Re1+= 17.Be1 Rd1 18.Kf1 Nd7 19.Bf3 Ba1?? (better is 19...Re1 20.Ke1 Ba1=) 20.Bd1+- 1–0. giorgo (1605) – 62ks, kurnik, 2012.

4.h3 Bf3 5.ef3 Nc6 6.b5 Ne5 7.f4 Ned7 8.Be2 c6 9.0-0 cb5 10.Bb5 a6 11.Ba4 b5 12.Bb3 Qa5 13.Re1 Nc5? 14.Bf6+- gf6 15.Bd5 e6?? 16.Ba8 (16...f5 17.Bc6 Ke7 18.d4+-) 1–0. miehnekort – newphoneline, Yahoo, 2005.

4.b5 b6 5.e3 Bg7 6.d4 Bg4 7.Bd3 Nbd7 (7...a6 8.c4=) 8.Nbd2 e5 9.0-0 0-0 10.h3 Bf3 11.Qf3 (worse 11.Nf3 e4-/+; 11.gf3?! ed4 12.Bd4 Nc5=+) 11...Re8 12.c4 e4? (better 12...a6!?+=) 13.Ne4+- Ne4 (13...a6 14.Nc3+-) 14.Be4 c5 (14...Rb8 15.Bc6+-) 15.bc6 Nf6 (15...Qh4 16.Bd5 Nf6+-) 16.c7! Qc7 17.Ba8 Ra8 (17...Qc4 18.Rfc1 Qb5+-) 18.Qa8 Bf8 19.Rfc1 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nc3 e5 5.a3 Be7 (5...Bf5 6.e3=) 6.d4 (6.e4 Nc6+=) 6...ed4 (6...e4 7.Nd2 d5 8.e3=+) 7.Qd4 (7.Nd4 0-0+=) 7...Nc6= 8.Qd2 Bf5 (8...Be6 9.e4=) 9.Nd4 (better is 9.e4 Bg4 10.Be2+=) 9...Ne4?? (better is 9...Nd4 10.Qd4 c5 (< 10...Bc2 11.Nd5+/–) 11.bc5 dc5 12.Qd8 Rd8=) 10.Ne4+- Be4 (10...Nd4 11.Qd4 Rg8+-) 11.e3 (better is 11.Nc6!? Bc6 12.Bh8 Be4+-) 11...Nd4?? (11...Bf6 12.f3 Nd4 13.Bd4=) 12.Bd4 (12.Qd4 f6 13.Qe4 d5+-) 12...Bf6?? (12...0-0 13.f3 Bh4 14.Kd1=) 13.Rd1 (better is 13.Qc3! Bd4 14.Qd4+- (14.ed4?! 0-0=)) 13...Be5 (13...0-0!?=) 14.f3+/– Bd5?? (14...Qh4 15.g3 Bg3 16.hg3 Qh1 17.Bh8 Bf3 18.Rb1+/–) 15.e4 Be6+/– 16.Be5 de5 17.Qc3 Qe7 18.Qe5 0-0 19.Bd3 Rad8 20.0-0 f6 21.Qc3 c6 22.a4 f5 23.e5 Rd5 24.f4 c5+/– 25.b5 b6 26.a5 Qc7?? 27.Bc4+- Rd1 28.Rd1 Bc4 29.Qc4 Kg7 30.a6 Rd8 31.Rd3 Rd3 32.Qd3 Kf7 33.Qd5 Ke8 34.Qg8 Kd7 35.e6 Kd6 36.Qf7?? Qe7 37.Qe7 Ke7 38.Kf2 Ke6 39.Kf3?? Kf6?? 40.c4+= Ke6 41.h3 h6 42.Kg3 Kf6 43.Kh4 Ke6 44.Kg3 Kf6 45.Kf3 g5 46.g3+= h5 47.fg5 Kg5 48.Ke3 h4 49.gh4 Kh4 50.Kf4 Kh3 51.Kf5 Kg3 52.Ke5 Kf3?? 53.Kd6 Ke4 54.Kc7 Kd4?? 55.Kb7+- Kc4 56.Ka7 Kb5 57.Kb7 c4 58.a7 c3 59.a8Q c2 60.Qc8 Ka5 61.Qc2 b5 62.Qc5 Ka4+- 63.Ka6 b4 64.Qd4 Ka3 65.Ka5 b3 66.Qa1 1–0. boldeagle – tradicio, ChessWorld.net, 2005.

4.Nc3 Bg7 5.e4 Ne4 6.Rb1 Nc3 7.dc3 0-0 8.Qd5 c6 9.Qe4 Bf5 10.Qh4 Bc2 11.Rc1 Bf5 12.c4 Bb2 13.Ng5 h5 14.Rb1 Bb1 0–1. guest495 – guest275, ICS blitz, 2000.

4.c4 Bg7 5.e3 0-0 6.Be2 Bg4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 Bg4).

4.d3 Nbd7 5.Nbd2 Bg7 6.Qb1 0-0 7.g3 Re8 8.Bg2 e5 9.0-0 Rb8 10.e4 c5 11.a3 Qc7 12.Rc1 Nb6 13.Qa2 Na4 14.c3 Nb2 15.Qb2 b6 16.Nc4 Bg4 17.Ne3 Be6 18.Ng5 Bd7 19.c4 h6 20.Nf3 Ng4 21.Ng4 Bg4 22.b5 f5 23.Re1 fe4 24.Re4 Bf5 25.Re3 h5 26.Rae1 Bh6 27.R3e2 Bd3 28.Ne5 de5 29.Re5 Re5 30.Bd5 Kh7 31.Qe5 Qe5 32.Re5 Bc1 33.a4 Bc2 34.Re7 Kh6 35.Ra7 Rf8 36.a5 ba5 37.Ra5 Bg5 38.Kg2 Bd8 39.Ra6 Bf5 40.Rc6 h4 41.Rc5 h3 42.Kf1 Bd3 43.Ke1 Bb6 44.Rc6 Bf2 45.Kd2–/+ Bf5 46.b6 Rd8 47.b7 Ba7 48.Kc3 Rb8 49.Rc7 Bb6 50.Rd7 (50.Rd7 Bd7 51.Kb4–+) 0–1. linakip – avillarreal, kurnik, 2011.

4.d3 Bg7 5.Nbd2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0-0 5.Nbd2 d6).

4.d3 Bg7 5.Nbd2 Nc6 6.a3 a5 7.b5 Na7 8.a4 Bd7 9.g3 Nc8 10.Bg2 c6 11.c4 c5 12.0-0 b6 13.Qc2 Na7 14.d4 Qc7 15.d5 0-0-0 16.Bc3 Rhg8 17.Qb2 e5 18.de6! Be6 19.Bf6 Bf6 20.Qf6 h5 21.Ng5 Rdf8 22.Ne6 fe6 23.Qe6 Kb8 24.Qd5 Rg7 25.Qa8# 1–0. linakip – cacek5, kurnik, 2011.

4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d6).

4.e3 Bg7 5.d4 0-0 6.c4 Re8 7.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Re8).

4.e3 Bg7 5.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6).

4.e4 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 d6 4.Nf3).

4.e4 Bg7 5.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 d6 5.e4).

4.Bf6 ef6 5.e3 Bg7 6.d4 0-0 7.Bd3 Nd7 8.Nbd2 Re8 9.0-0 c5 10.c3 a5 11.a3 ab4 12.ab4 Ra1 13.Qa1 Nf8 (13...b6 14.Qa8+=) 14.Qa2 cd4 15.cd4 Be6 16.Bc4 Bc4 (16...Qc7 17.Qa5 Rc8 18.d5+=) 17.Qc4+/- Ne6 18.Rc1 Ng5 (18...d5 19.Qb5+/-) 19.Qc7 Nf3 20.Nf3 f5 (20...Qb8 21.b5+-) 21.Qb7+- g5 (21...Qb8 22.Qc6+-) 22.Rc7 (22.Rc7 Qf6 23.Qc6+-) 1-0. dannysmet (2005) - Lhesleen (2025), Rated Blitz game, lichess.org, 2020.

4.g3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 d6).

4.g3 Bg7 5.Bg2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6).

4.g4 Bg4!? 5.Bg2 Nc6-/+.

4.g4 Bg7 5.g5= Nh5 6.Bg7 Ng7 7.h4 (7.Nc3 Nc6=) 7...Nf5 (7...Bg4 8.e3=) 8.Bh3 (8.e4!? Ng7 9.Nc3=) 8...Nc6=+ 9.h5 Nfd4 10.hg6?? (better 10.Bg2=+) 10...Nf3-+ (10...hg6?! 11.Nd4 Nd4 12.e3 Bh3 13.ed4-+) 11.ef3 Bh3?? (better 11...hg6!? 12.b5 Nd4-+ (12...Bh3?! 13.bc6 bc6 14.Nc3-+; 12...Rh3?! 13.Rh3 Bh3 14.bc6-+)) 12.g7 (better 12.gf7 Kf7 13.Rh3=) 12...Rg8-/+ 13.Rh3 Rg7 14.b5 (14.f4-/+) 14...Ne5 (better 14...Nd4!? 15.Rg3 Qd7-+) 15.f4 Ng4?? (better 15...Qd7 16.Rc3 Ng6-/+) 16.Qg4+- Qd7 17.f5 (17.Qd7 Kd7 18.Ke2 e5+-) 17...Qb5 (17...0-0-0 18.Nc3 f6 19.Rh5 Rg5 20.Rg5 fg5 21.0-0-0+-) 18.Nc3 Qc5 (18...Qd7 19.Rb1 0-0-0 20.Nd5+-) 19.0-0-0 0-0-0 (19...d5+-) 20.f6 Kb8 1-0. Lance5500 (2655) - TimC (2315), lichess.org, 2015.

4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 h6).

4.g3 b6 5.Bg2 Bb7 6.0-0 c5 7.b5 Nbd7 8.d3 e6 9.Nbd2 Be7 10.a4 0-0 11.c4 d5 12.cd5 Bd5 13.e4 Bb7 14.Nc4 Qc7 15.Qc2 Rad8 16.a5 Nh7 17.a6 Ba8 18.Rad1 Ng5 19.Nfe5 Ne5 20.Be5 Qd7 21.Bf4 Nh7 22.Ne5 Qb5–/+ 23.Qc4 Qc4 24.Nc4 Bf6 25.e5 Bg5 26.Ba8 Ra8 27.Be3 Be3 28.Ne3 Ng5 29.f4+= Nh7 30.d4 Rfd8 31.d5 b5 32.d6 c4 33.Rb1 Rab8 34.Nc2 Rb6 35.Rfc1 Ra6 36.Rb5 Ra2 37.Rc5 Ra4 38.Ne3 Nf8 39.R5c4 Rc4 40.Rc4 Nd7 41.Rc7 Nb6 42.Ra7 Kh7? 43.Rb7 Nd5? 44.Nd5 ed5 45.Rb5 Kg6 46.Rd5 Kf5 47.Rd2 Ke4 48.Kf2 g6 49.Re2 Kd4 50.Kf3 h5 51.h4 Kd3 52.Re3 Kd4 53.Ra3 Kd5 54.Ra7 Ke6 55.g4 hg4 56.Kg4 Rd7 57.Ra8 Rb7 58.Re8 Kd7 59.Rf8 Ke6 60.Re8 Kd7 61.Re7 Kc8 62.Rb7 Kb7 63.Kg5 Kc8 64.Kf6 Kd7 65.Kf7 (65.Kf7 Kd8 66.e6+-) 1–0. giorgo – venustus, kurnik, 2012.

4.e3 Nb4 5.Bc4 Bf5 6.d3 d5 7.Bb3 e6 8.a3 N4a6 9.Nf3 Be7 10.Ne5 Bf6 11.g4 Be5 12.Be5 Qh4 13.Kd2 Bg4 14.Qf1 f6 15.Bb2 Nd7 16.Nc3 0-0-0 17.Nb5 Kb8 18.h3 Bh5 19.Nd4 Rhe8 20.f5 Ndc5 21.fe6 Bg6 22.Ba2 Na4 23.Rb1 c5?? 24.Nc6!+/– Ka8 25.Nd8 Rd8 26.Rg1 d4 27.Qf3 Nb4?? 28.ab4+- de3 29.Qe3 (29...Qb4 30.Kc1 Nb2 31.Rb2+-) 1–0. Puls – Hohne, corr Grd–Man, 1998.

4.e3 Nb4 5.Bc4 Bf5 6.d3 Nd7 7.c3 Nc6 8.Qb3 e6 9.Qb7 Na5 10.Qa6 Nc4 11.Qc4 d5 12.Qa6 Nc5 13.Qc6 Nd7 14.e4 de4 15.de4 Bg6 16.Nf3 Rb8 17.Bc1 Bc5 18.Ne5 Bb6 19.Ke2 h5 20.Rd1 0-0 21.Nd7 Qh4 22.Nf8 Qf2 23.Kd3 Rf8 24.Bd2 Rd8 25.Kc2 Be3 26.Qc7 Be4 27.Kc1 Rd5 28.c4 Rc5 29.Qb8 Kh7 30.Qb3 Bf4 31.Bf4 Qf4 32.Nd2 Bd5 33.Kb2 Bg2 34.Rac1 Rc7 35.Qd3 g6 36.a3 Qh2 37.Ka2 Rc8 38.Qd7 Rc7 39.Qd4 Qh3 40.Rb1 Rc6 41.Rb8 1–0. Bousios,Hristos – Oussouloglou, Greece, 1977.

4.Nf3 b6 5.e3 Bb7 6.Be2 e5 7.fe5 Ne5 8.0-0 Ng6 9.Nd4 d5 10.Bb5 Nd7 11.Qf3 Qe7 12.Nf5 Qb4?? 13.Ng7 Kd8 14.Qf7 Qb5 15.Qe8 1–0. Wenzel,Andreas – Nispel,Uwe (1610), Bahn–chH Bad Wildungen, 2000.

4.Nf3 c5 5.a3 Qb6 6.Bc3 Ne4 7.bc5 dc5 8.e3 Ndf6 9.Bc4 g6 10.Ng5 Nd6 11.Be2 h6 12.Nf3 Bg7 13.d3 Nf5 14.e4 Ne3–/+ 15.Qd2 Ng2 16.Kf2 Bh3 17.Bf1? 0-0-0?? 18.Bg2 Ne4=+ 19.de4 Rd2 20.Nfd2 Bg2 21.Bg7 Bh1 22.Bh8 c4 23.Ke2 Qg1 24.Nc4 Qh2 25.Kd3–/+ ½–½. Solano,Agustin (2015) – Rodriguez,Adrian (2105), CRA–ch Costa Rica, 1997.

4.Nf3 e5 5.e3=+.

4.Nf3 e5 5.fe5 de5 6.a3 (6.Ne5 Bb4 7.e3 Ne5 8.Be5 0-0=+) 6...Bd6 7.c4 c6 (7...e4 8.c5 Be7 9.Nd4=+) 8.d3 (8.c5 Bc7=+) 8...0-0 9.e4 Qc7 (9...c5 10.bc5 Qa5 11.Qd2 Qc5 12.Nc3=+) 10.c5 Be7 11.Be2 Re8 (11...b6 12.cb6 ab6 13.0-0=+) 12.0-0 (better is 12.Qa4=) 12...Nf8?? (better is 12...b6 13.d4 ed4 (< 13...Ne4 14.Ne5 Ne5 15.de5=) 14.cb6 ab6 15.Qd4 c5–/+) 13.Be5 Qd8 14.Bb2 Ng6 15.Nbd2 Nf4 16.Nc4 Ne2 17.Qe2 Qc7 18.Be5 Qd8 19.Bd6 Be6+/– 20.Be7 Qe7 21.Nd6+- Red8 22.h3 Ne8+/– 23.e5 Bd5 24.Nd4 Nd6 25.ed6 Qg5 26.Nf5 Re8 27.Ne7 Kf8 28.Rae1 g6?? 29.Rf2 Be6?? 30.Kh2 Bd5?? 31.Qe3 Qh5?? 32.g4 Qh4+- 33.Qg3 Qg5 34.h4 Qh6 35.Kh3 Be6?? 36.Re6 (36.Re6 Qg7 37.d7+-) 1–0. thotares (1635) – arjen100, internet, 2007.

4.Nf3 g6 5.e3= Bg7 6.c4 0-0 7.Be2 a5 8.b5 Nc5 9.0-0 c6 10.a4 Qb6 (10...Bf5 11.Nd4=) 11.Bf6+= Bf6 12.Ra2 Bf5 13.d4 Ne4 14.Qb3 (14.Bd3 d5+=) 14...c5 15.d5 e6 16.de6 fe6 17.Nbd2?? (better is 17.Nfd2 Nd2 18.Nd2=) 17...Nc3–+ 18.Bd1 Bd3 19.Re1 d5?? (19...Na2 20.Qa2 Bf5 21.h3–+) 20.Ne5? (better is 20.Ra1+=) 20...Be5–+ 21.fe5 Na2 22.Qa2 Rad8 23.Bf3 d4?? 24.ed4?? Rd4–+ 25.Re3 Qc7 26.Qb3 Rfd8 27.b6 Qf7 28.Qc3 Qf4 29.Re1 Bf5 30.Nf1 Rc4 31.Qa5 Qd4 32.Kh1 Ra4 33.Qb5 Bd3 34.Qb3 Kf7 35.Bb7 Rb4 36.Qa2 Rb6 37.Bf3 Rb2 38.Qa1 Qf2 39.Ng3 Bb5 40.Ne4 Qc2 41.Nd6 Kg8 0–1. orangutandu – cucrapok, kurnik, 2012.

4.e3 Bg7 5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0-0 5.Nf3 d6).

4.Nf3 Bg7 5.d3 0-0 6.e4 (--> 2.Bb2 g6 3.e4 d6 4.f4 Bg7 5.Nf3 0-0 6.d3).

4.a3 Nd7 5.c4 b6 (5...a5 6.b5=) 6.Nc3 Bb7 7.e3 Rb8 8.d4 g6 9.d5 Bg7 10.b5 0-0 11.a4 a6 12.Nf3 ab5 13.ab5 Nc5 14.Be2 Re8 15.0-0 Ne4 (15...f5!? 16.Ra3 f4 17.ef4 Qf6=) 16.Ne4+/- Re4 17.Nd2 Re8 18.Qb3 f5 19.Nf3?? (better 19.Ra2+=) 19...Ba1-/+ 20.Ra1 Rf8 (20...f4 21.Nd4-/+) 21.Re1 Qf6 22.Nd4 Qd8 23.Qc2 (better 23.Nf3!?=) 23...Ra8 24.Rd1 Ra5 25.Bf3 Ra8 26.Qd2 (26.Be2 Qf6 27.Qc3-/+) 26...Qe7 27.Qe1 Bc8 28.Qf1 Bd7 29.h3 Ra4 30.g3 c5?? (better 30...Rfa8-/+) 31.bc6+= Bc6?? (better 31...Bc8+=) 32.Nc6 Qc7 33.Rc1 Rc8 34.Qd3 Raa8 35.Qd4 Rf8 36.Qf6 Qc8 (36...Rfe8+-) 37.Ne7 1-0. alessandrocarvalhaes (1840) - chessiszen2018 (1830), lichess.org, 2020.

4.b5 a6 5.e3 g6 (5...d5 6.Nf3=+) 6.c4 Bg7 7.d4 f5 8.Nc3 c6 (8...f4 9.Qf3 fe3 10.Qe3 Kd7 11.Qh3 f5 12.Nge2=+) 9.a4 (9.bc6 bc6 10.Nf3 f4=) 9...cb5 (9...f4!?=) 10.ab5+= Bd7 (10...0-0 11.Qf3+=) 11.Nf3 0-0 12.Be2 Be6 13.0-0 Nd7 14.Re1 Nb6 15.Qb3 d5 (15...a5 16.Na4+=) 16.c5+/- Nc8? (16...Nc4 17.Rec1+/-) 17.b6 (better 17.ba6!? ba6 18.Ra6+-) 17...Ne7+/- 18.Na4 (18.Ra4 Re8+/-) 18...Nc6+= 19.Qc3 Bd7 (19...f4 20.Qd2+=) 20.Reb1 (20.Nb2 Re8 21.Nd3 Qe7+/-) 20...Ne7 (20...f4!?+=) 21.Bd1 Ba4 (21...Nc6!?+/-) 22.Ba4+- Nc6 (better 22...Qb8!?+-) 23.Bc6 bc6 24.Rb2 a5 25.Ra5 Ra5 (25...Qb8 26.b7 Ra5 27.Qa5+-) 26.Qa5 Qb8 27.Ra2 (27.b7 f4+-) 27...Bh6?! Black prepares f4 (27...f4 28.Qa4 fe3 29.Qc6 ef2 30.Kf2+-) 28.h3 (better 28.Ne5 Qc8 29.Qa7 Kg7+-) 28...f4 29.Ne5 (29.e4 de4 30.Ne5 f3+-) 29...fe3 30.Nd7 ef2 31.Rf2 (worse 31.Kf2 Qf4 32.Kg1 Qc1 33.Kh2 Be3=+) 31...Qb7?? (31...Qd8 32.Nf8 Be3+-) 32.Nf8 Kf8 (32...Qc8 33.Nd7! Qd7 34.Qa8 Kg7 35.b7+-) 33.Qa7 Qe7 34.Qe7 Ke7 35.b7 Be3 36.b8Q Bd4 37.Kf1 (37.Qc7 Ke8 38.Qc6 Kf8 39.Qd6 Kg8 40.c6 Kg7 41.c7 f6 42.c8Q Bf2 43.Kf2 g5 44.Qcd7 Kg6 45.Qe8 Kf5 46.g4) 37...Bc5 38.Re2 (38.Qc7 Ke6 39.Re2 Be3 40.Re3 Kf5 41.Qe5) 38...Kf6 (38...Be3 39.Re3 Kd7 40.Qb7 Kd8 41.Qc6 f5 42.Re8) 39.Qe5 1-0. ch77essi988 (1660) - artemohanjanyan (1715), Rated Blitz game, lichess.org, 2016.

4.b5 b6 5.a4 g6 (5...a6 6.e3=+) 6.c4 Bg7 7.Nc3 0-0 8.Rc1 Nd7 9.Nf3 Bb7 10.e3 Re8 11.Be2 Nc5 (11...f5 12.0-0=) 12.d4 Ne6 13.0-0 f5 14.d5 (14.Nd2!?+=) 14...Nc5= 15.Nd4 a6 16.Nc6 Bc6 (16...Qg5 17.a5=+) 17.dc6= ab5 (17...Bc3 18.Rc3 Qf6 19.Qa1=+) 18.ab5 Ra3 (18...Bc3 19.Rc3 Qf6 20.Qc1=) 19.Nb1 (19.Nd5 Ra7=) 19...Ra2 20.Nd2 (20.Bf3 Ne4=) 20...Ne4 (20...f4!?-/+) 21.Ne4=+ Re4 (21...fe4 22.Rc2 Ra5 23.Qd2=) 22.Bd3 Re8 23.Rc2 Ra1 (23...Ra3 24.Qd2=) 24.Qe2 Qa8 25.Ra1 Qa1 26.Qf1 Qf1 27.Kf1 Ra8 28.Ke2 Be5 29.g3 Ra3 30.f4 (30.Rd2 h6+=) 30...Bg7 31.Rd2 Kf8 (31...Bc3 32.Rc2=) 32.Rc2 (better 32.c5+/-) 32...Ke7= 33.Kd2 Rb3 (33...h6 34.Be2=) 34.h3 (better 34.Ra2 Rb2 35.Rb2 Bb2 36.Bf1+=) 34...Ke6? (34...Ra3 35.Ke2=) 35.g4 (35.c5 Rd3 36.Kd3 dc5+-) 35...fg4 (35...Ra3 36.gf5 gf5 37.Rc1+=) 36.hg4 (36.c5!? Rd3 37.Kd3 bc5 38.hg4+-) 36...Rb2 (36...Ra3 37.Rc1=) 37.f5 Ke7 38.Rb2 Bb2 39.e4 (39.fg6!? fg6 40.g5=) 39...Be5=+ 40.Ke3 Kf6 41.Kf3 Kg5 (41...h5 42.gh5 gh5 43.Bc2=+) 42.Bf1 (42.c5 dc5 (42...bc5?? 43.b6 cb6 44.c7+-) 43.Bc4 f6=) 42...h5=+ 43.Bh3 (43.gh5 gh5 44.Bh3 Bd4=+) 43...h4 (43...Kh4 44.Bf1-/+) 44.Bg2 Bg3 45.fg6 fg6 46.Bh3 Kf6 47.Ke3 g5 48.Kd4 Be5 (48...Ke6 49.Ke3-/+) 49.Kd5 Bc3 50.Bg2 Be5 51.Bh3 Bc3 52.Bf1 (52.Bg2 Ke7=+) 52...Be5 (52...Bb2 53.c5 dc5 54.Bg2-/+) 53.Bg2 (53.Bh3 Ke7=+) 53...Bc3 54.c5 (better 54.Bf1=) 54...bc5?? (better 54...dc5 55.Bh3 Bd4-/+) 55.b6!+- Ba5 (55...cb6 56.Kd6 Deflection (56.c7 Passed pawn)) 56.b7 c4 57.b8Q c3 58.Qf8 (58.Qf8 Kg6 59.e5 de5 60.Be4) 1-0. ch77essi988 - Amin85 (1815), Rated Blitz game, lichess.org, 2016.

4.b5 b6 5.e3 Be7 6.Qf3 c6 7.bc6 Qc7 8.a4 (8.Nc3!? Nc6 9.Bb5+/-) 8...0-0 (8...Qc6?? 9.Bb5 Bb7 10.Bc6 Nc6 11.Nc3+-) 9.h4 (better 9.Nc3!? Be6 10.Nb5=) 9...Nc6=+ 10.h5 Be6 11.Bb5 (11.Nc3 h6=+) 11...Ne5 (11...Bd5 12.Qd5 Nb4 13.Qf5 Nc2 14.Kd1+-) 12.Qf4 White plans h6 (12.Qd1!?-/+) 12...Qc2-+ 13.h6 (13.Nc3 Rfc8 14.Qe4 Qe4 15.Ne4 a6-/+) 13...g6 (13...a6 14.Na3 Qb2 15.Qd4 ab5 16.hg7 Kg7 17.Nb5-+) 14.Ne2? (14.Nc3 Rfc8 15.Qe4 Qe4 16.Ne4 a6-/+) 14...Nd3 (better 14...a6 15.Na3 Qb2-+) 15.Bd3-/+ Qd3 16.Nbc3 g5 17.Qe4 Qe4 18.Ne4 d5 19.N4c3 f5 20.Nb5 Bf6 21.Rc1 a6 (21...Rac8 22.Nbc3-/+) 22.Nc7 Rac8 23.Ne6 (better 23.d4!?=+) 23...Rc1 24.Nc1 fe6 25.Nd3 e5 (25...Rc8!?-/+) 26.Nb4 Rc8 (26...d4 27.ed4 ed4 28.Ke2-/+) 27.0-0 (27.Ke2 Rd8=+) 27...Rc5 28.Na6 Ra5 29.Nb4 Ra4 (29...d4!?=+) 30.Nd5= Bh8 (30...Bd8 31.Rb1=) 31.Nb6 (31.Rc1 Ra5 32.Rc8 Kf7 33.Nb6 Bf6+/-) 31...Rb4 (31...Ra6!? 32.Rb1 Kf7+=) 32.Nd5+/- Rh4 (better 32...Rb7!? 33.Ra1 Kf7+/-) 33.Ne7+- Kf7 34.Nf5 Kf6?? (better 34...Ra4 35.f3 Ra2+-) 35.Nh4 gh4 36.Kh2 Kg6 37.Kh3 Bf6 38.Rc1 Kh6 39.Rc6 Kg5 40.g3 (better 40.Rf6 Kf6 41.Kh4+-) 40...hg3 41.fg3 h6 (41...Kf5 42.g4 Kg5 43.Rd6+-) 42.d3 (42.Rf6 Kf6 43.Kg4 Kg6+-) 42...Be7 (42...Bg7 43.Kg2+-) 43.Re6 Bf6 44.e4 (better 44.Rf6 Kf6 45.Kh4+-) 44...h5 45.Re8 Bg7 46.Rg8 Kh6 47.Re8 Kg6?? (47...Kg5 48.Rb8 Bf6+-) 48.Re6 (48.g4 Bf6+-) 48...Kf7 (48...Kg5 49.Rb6+-) 49.Rd6 Bf6 50.g4 h4 (50...Ke7 51.Rd5 h4 52.g5 Bg5 53.Re5 Kf6 54.Rg5 Kg5 55.d4+-) 51.Rd7 (better 51.Rf6 Kf6 52.Kh4+-) 51...Kg6 52.Rc7 Kg5 (52...Bg5 53.Rc8+-) 53.Rc8 Kg6 54.Rg8 Kf7 55.Rc8 Kg6 56.Rc5 (better 56.Rc6 Kg5 57.Rf6 Kf6 58.Kh4 Kg6+-) 56...Kg5 (56...Kh6 57.Rc6 Kg5 58.Rf6 Kf6 59.Kh4+-) 57.Rd5 (57.d4 Bg7+-) 57...Kf4 (57...Kg6 58.Ra5 Kh6 59.Ra6+-) 58.Rd6 (better 58.d4+-) 58...Kg5 (58...Bg5+-) 59.Rd8 (59.Rf6 Kf6 60.Kh4 Kg6+-) 59...Kf4 (better 59...Bd8 60.Kg2 Kg4-+) 60.Rf8+- Kg5 61.Kg2 (better 61.Rf6 Kf6 62.Kh4 Kg6+-) 61...Kg4 (61...Kg6+-) 62.Rf6 Kg5 63.Rf5 Kg4 64.Re5 h3 65.Kh2 Kf4 66.Rf5 Ke3 67.Rd5 Kf4 68.Kh3 Ke3 If Black now would get Kg2 in, he might survive 69.e5 (69.e5 Ke2 70.e6 Ke1 71.e7 Ke2 72.e8Q Kd2 73.Rc5 Kd1 74.Qa4 Ke2 75.Rc2 Kd3 76.Qc4 Ke3 77.Re2 Kf3 78.Qe4) 1-0. FelixMart – SoulSenderNY, Rated Rapid game, lichess.org, 2020.

4.b5 c6 5.a4 (5.e3 d5=) 5...Be7 (5...Be6 6.Nf3=) 6.c4 (6.Nf3 Be6=) 6...Be6 7.e4 (7.e3 0-0=+) 7...0-0 8.f4 (8.Qf3 a6=+) 8...d5 (8...f5 9.ef5 Bf5 10.d4-/+) 9.f5 Bd7 10.cd5 cd5 11.ed5 (11.Bd3!?=+) 11...Bf5-/+ 12.g4?? (12.Qf3 Qd7-+) 12...Bb1 (better 12...Qd5 13.gf5 Qh1-+) 13.Rb1 Bc5 14.d4 (14.Bg2 Bg1 15.Rg1 Qd6-/+) 14...Bb6 (better 14...Qd5!? 15.Nf3 Bd4-+) 15.Bc4 (15.Bg2 Qd7-/+) 15...Re8 16.Kf2 Nd7 17.Nf3 Qc7 (17...Ne5!? 18.Ne5 fe5 19.Qf3-+) 18.Rc1-/+ Qf4 19.Qd3?? (better 19.Qd2 Qg4 20.Rhg1-/+) 19...Ne5-+ (19...Qg4?! 20.h3 Qh5 21.Kg2-+) 20.Qf5 (20.Qc3 Rac8 21.Rhe1 Nf3 22.Qf3 Bd4 23.Kg2 Qd2 24.Re2 Re2 25.Qe2 Qc1 26.Bd3-+) 20...Bd4 (better 20...Ng4 21.Qg4 Bd4 22.Kf1 Qg4 23.Nd4 Qd4-+) 21.Kg2-/+ Qf5 (21...Qe3!? 22.Nd4 g6-+) 22.gf5=+ Nf3 23.Kf3 Re3 24.Kf4?? (24.Kg2 Ra3=+) 24...Re5 (better 24...Rae8 25.Bd3 Rd3-+) 25.Rhe1 (25.Rc2 Bc5 26.Kg4 Bd6-/+) 25...Rae8 26.Re5 Re5 (better 26...Be5!? 27.Kf3 Bh2-/+) 27.d6+= Be3 28.Kf3 Bc1?? (better 28...Kf8 29.Rd1 Ke8+=) 29.d7+- Rf5 30.Kg2 Rg5 31.Kh1?? (better 31.Kf2 Rf5 32.Ke2 Re5 33.Kd3 Re3 34.Kc2+-) 31...h6?? (better 31...Rg1! 32.Kg1 Be3 33.Kg2 Bb6=) 32.d8Q+- Kh7 33.Bf7 Be3 (33...Rg1 34.Kg1 Be3 35.Kf1 h5 36.Qg8 Kh6 37.h4 g5 38.Qg6) 34.Qg8 1-0. afsharian – marantoms, lichess.org, 2018.

4.b5 Bd7 5.a4 a6 6.c4 ab5-/+ 7.cb5 Bb5! 8.Nc3 (8.ab5 Ra1 Pinning (8...Ra1 Deflection)) 8...Bc6 9.e3 Be7 10.Nf3 0-0 11.Be2 Na6 12.0-0 Nc5 Increasing the pressure on the isolated pawn on a4 13.Nd4 (13.Qc2=+) 13...Ne6 (better 13...Bd7!?-/+) 14.Nc6= bc6 15.Bf3 d5 16.Re1 (16.d4 Ra5=) 16...f5 17.d4 Ng5 18.Be2 Bb4 19.Qb3 Rb8 20.Qc2 Ne4 21.Ne4 Be1 (21...de4?! 22.Reb1=) 22.Re1 (22.Nc5!? Ba5 23.Bd3=+) 22...fe4-/+ 23.Ra1 (23.Qc6 Rb6 24.Qc5 Qa8 25.Qc7 Rc6-/+) 23...Rb4 (23...Qf6 24.a5-+) 24.a5 (24.Qc6!? Qa8 25.Bb5-/+) 24...Qa8-+ 25.Qc5 Rfb8 26.a6?? (26.Rc1-+) 26...Rb1 27.Rb1 (27.Qc1 Rc1 28.Rc1-+) 27...Rb1 28.Bf1 (28.Qc1 Rc1 29.Bf1 Qa6 30.h4 Qf1 31.Kh2 Qf2 32.Kh3 h5 33.g4 Rh1) 28...Qa6 29.h3 Rf1 (29...Qf1 30.Kh2 Qh1 31.Kg3 Rg1 32.Qc2 Qg2 33.Kh4 Qg5) 30.Kh2-+ Rf2 31.Qe7 Qc8 0-1. brucepeng (1915) - Yusuf_Seid_Khan (1980), lichess.org, 2020.

4.b5 Bd7 5.a4 a6 6.c4 Be7 7.Nc3 c6 8.e3 0-0 9.Nf3 Be6 10.Be2 Nd7 11.0-0 Nb6 (11...Qa5 12.Nd4 Rfc8 13.bc6 bc6 14.Rb1+=) 12.ba6 ba6 13.d3 d5 14.Nd2 (14.Nd4 Qc7+=) 14...Bb4 15.Ndb1 (15.Qb3 c5=) 15...dc4=+ 16.dc4 Bc4 (16...Nc4 17.Qb3 Bc3 18.Qc3 Qa5=+) 17.Qd8 (better 17.Bc4!? Nc4 18.Qg4 Bc3 19.Nc3-/+) 17...Rad8 18.Bc4 Nc4 19.Ne4 (19.Ra2 Rfe8-+) 19...f5 (19...c5 20.Rc1-+) 20.Ng3-/+ g6 21.Ne2 (21.Rc1 Na5 22.Ra2 Nb3-+) 21...c5 22.Nec3 (22.Nbc3 Rd3 23.Rac1 Rfd8-+) 22...Rd3 (22...Nd2!? 23.Nd2 Bc3 24.Nc4 Ba1 25.Ra1-+) 23.Ne2 Rfd8 24.g3 Nd2 25.Nd2 Rd2 26.Nf4 a5 27.Nh3 c4 28.Nf4 (28.Ng5 c3-+) 28...c3 29.Rfc1 (29.Kg2 c2-+) 29...c2 30.Kg2 Rd1 (30...g5 31.Nh3 Rd1 32.Ng5-+) 31.Ne2 Rc1?? (better 31...R8d2 32.Nd4 Bc3 33.Nc2 Rc1 34.Rc1 Bb2-+) 32.Rc1-/+ Rd2 (32...Rd3!?-/+) 33.Nd4= Ba3 (33...Rd3 34.Rc2 (34.Nc2? Rc3-+) 34...Kg7 35.Ra2=) 34.Rc2 Rc2 35.Nc2 Bb2 36.Ne1 (36.Nd4 h6+=) 36...Kf8= 37.Nd3 Bc3 38.f3 Ke7 39.Nc5 (better 39.Kf2!?=) 39...Kd6-/+ 40.Nd3 Kd5 41.Nf4 (41.Kf2 Kc4 42.Ke2 Kb3-/+) 41...Kc4 42.e4 (42.g4-/+) 42...Kb4 (better 42...fe4!? 43.fe4 Kb3-+) 43.Nd5=+ Kc4 44.Nc3?? (44.Nf4 fe4 45.fe4-+) 44...Kc3-+ 45.ef5 gf5 46.h3 (46.Kf2 Kb4 47.Ke3 Ka4-+) 46...Kb4 47.g4 (47.Kf2 Ka4 48.Ke3 Kb3-+) 47...Ka4 48.gf5 Kb3 49.Kg3 a4 50.Kh4 a3 51.Kg5 a2 52.Kf6 a1Q 53.Kf7 Qe5 54.f6 Kc4 55.h4 Kd5 56.h5 (56.Kg7 Ke6 57.f4 Qf6 58.Kg8 Qf7 59.Kh8 Kf6 60.f5 Qg7) 56...Kd6 (56...Qh5 57.Ke7 Qe5 58.Kd7 Qd6 59.Kc8 Kc6 60.f7 Qf8) 57.h6 (57.f4 Qh5 58.Kg8 Ke6 59.f5 Kf6 60.Kh8 Qg4 61.Kh7 Qg7) 57...Kd7 (57...Qh5 58.Kf8 Ke6 59.Kg7 Qg6 60.Kh8 Kf7 61.f4 Qg8) 58.Kg7 (58.f4 Qe6 59.Kg7 Ke8 60.f5 Qc4 61.Kh8 Kf8 62.f7 Qf7 63.f6 Qg8) 58...Ke8 59.Kh7 (59.f4 Qf5 60.f7 Qf7 61.Kh8 Kf8 62.f5 Qg8) 59...Kf7 60.Kh8 (60.f4 Qe8 61.f5 Qg8) 60...Qf6 (60...Qe8 61.Kh7 Qg8) 61.Kh7 Qg6 (61...Qg6 62.Kh8 Qh6) 0-1. ch77essi988 - Zov_Hax, Rated Blitz game, lichess.org, 2018.

4.b5 Bd7 5.a4 Be7 6.c4 (6.e3 a6 7.Nc3 ab5 8.ab5 Ra1 9.Qa1 0-0=) 6...0-0 7.Nc3 Bf5 (7...Bg4 8.h3 Be6 9.e3=) 8.e3= Nd7 (8...a6 9.Qf3 Qc8 10.Be2=) 9.d3 (9.Qf3 Be6+=) 9...Nc5 (9...c6 10.Nf3 Qa5 11.Rc1=) 10.Be2 (10.d4 Ne4 11.Qf3 Nc3 12.Qf5 d5=) 10...Re8 11.e4 (11.d4 Ne4 12.Ne4 Be4=) 11...Bg6=+ 12.Nf3 f5 13.0-0 (better 13.ef5!? Bf5 14.0-0=+) 13...fe4-/+ 14.de4 (14.Ne4 Ne4 15.de4 Be4-/+) 14...Ne4 (14...Bf6 15.Ra3-+) 15.Ne4 Be4 16.Nd4 (16.Bd3 d5-/+) 16...Bf6 17.Rc1 (17.Ra2 a6-+) 17...a6 (17...Bd4 18.Qd4 Bg2 19.Kg2 Re2 20.Qd5-+) 18.Bf3 (18.Bg4 d5 19.cd5 Qd5-+) 18...Qd7 (18...Bd4!? 19.Qd4 Bf3 20.gf3-+) 19.Be4 (19.Re1 Bf3 20.Nf3 Re1 21.Qe1 ab5 22.ab5 c6-/+) 19...Re4 20.Nf3 Rae8 21.Qd5 ab5 (21...c6 22.Qd3-/+) 22.Qb5 (22.cb5 b6 23.Rc4 Rc4 24.Qc4 d5-/+) 22...c6 23.Qb3 h6 24.Rb1 R8e7 25.Rfe1 Re1 26.Re1 Re1 27.Ne1 Qe6 28.Kf1 Qe7 29.Qd1 Bc3 30.Nd3 (30.Nf3 Qe4 31.Qb3 Qd3 32.Kg1 b6-/+) 30...Qh4 31.f4 (31.Qb3 Qd4 32.Ne1 Ba5-+) 31...Qh2 32.Qe2 (32.Qg4 Qh1 33.Ke2 g6-+) 32...Qh1 33.Kf2 Bd4 (33...Qh4 34.Kf1 g6 35.Qe4-+) 34.Kf3 (34.Kg3 g6-+) 34...Qh5 35.g4 Qh3 36.Ke4 Bf6 37.Qf3 Qf3 (37...Qh2!? 38.Ke3-+) 38.Kf3 Bd4 (38...g6 39.Nf2-+) 39.Nb4 Kf8 40.Nd3 Ke7 41.f5 (41.Ke4 Bc3-+) 41...Kf6 42.Kf4 (42.Ke4 Be5-+) 42...Be5 43.Ne5 (43.Kf3-+) 43...de5 44.Ke4 Kg5 45.Ke5 Kg4 46.Kd6 h5 47.Kc7 (47.f6 gf6 48.Kc7 h4-+) 47...h4 48.Kb7 h3 (48...Kf5 49.c5 h3 50.a5-+) 49.Kc6 (49.f6 g5 50.c5 h2-+) 49...h2 50.Kb6 h1Q 51.c5 (51.f6 Qh6 52.c5 Qf6 53.c6 Qd4 54.Kb7 Qb4 55.Kc8 Qa4-+) 51...Qa8 (51...Qb1 52.Kc7-+) 52.a5 (52.f6 Qd8 53.Kb7 Qf6-+) 52...Kf5 53.c6 Ke6 54.c7 Kd7 55.a6 f5 56.a7 f4 57.c8Q Qc8 58.Kb5 f3 59.a8Q (59.Ka5 f2 60.a8Q Qa8 61.Kb4 Qb8 62.Kc3 Qb5 63.Kd4 f1Q 64.Ke4 Qfd3 65.Kf4 Qbf5) 59…Qa8 (59...Qa8 60.Kb4 Qa2 61.Kc5 Qa4 62.Kd5 f2 63.Ke5 f1Q 64.Kd5 Qf5) 0-1. ch77essi988 (1765) - castletown (1765), Rated Blitz game, lichess.org, 2017.

4.b5 Be7 5.a4 0-0 6.c4 Bf5 7.Nc3 Nd7 (7...Re8 8.d4=+) 8.e3= Nc5 (8...Bg6 9.d4=) 9.d4 Ne6 (9...Ne4 10.Qf3 Nc3 11.Qf5=) 10.e4 (better 10.Qf3!? Bc2 11.Qb7+/-) 10...Bg6= 11.f3 (11.Qd3 c5 12.d5 Nd4=+) 11...Nf4 (11...f5!?-/+) 12.Nge2= Ne6 13.f4 Bh5 (13...f5 14.g4 Bh4 15.Ng3 fe4+= (worse 15...Nf4 16.ef5 Qe7 17.Kd2+/-)) 14.h3 (better 14.f5 Nf4 15.Qd2 Ne2 16.Be2 Be2 17.Ne2+/-) 14...Nf4-/+ 15.g4 (15.Nf4 Bd1 Pinning (15...Bd1 Deflection)) 15...Ne2 16.Qe2 Bg6 17.Bg2 Re8 18.0-0 c6 19.Rae1 d5 (19...Rc8!?-/+) 20.ed5= cd5 (better 20...c5 21.Qd2 cd4 22.Qd4 Qc7=+) 21.Qe7?? (better 21.c5 Be4 22.Ne4 de4 23.Qe4+/-) 21...Re7-+ (21...Qe7?! 22.Re7 Re7 23.Nd5=+) 22.Re7 Qe7 23.Nd5 Qa3 24.c5 (24.Re1 Rd8-+) 24...Qa4 25.Ne7 (25.Rf4 Re8 26.c6 Qb5-+) 25...Kh8 26.Bd5 (26.Ng6 fg6 27.c6 Qd4 28.Kh1 bc6 29.bc6 a5-+) 26...Qd4 27.Kg2 (27.Rf2 Re8 28.Ng6 fg6-+) 27...Be4 28.Be4 Qe4 (28...Qe4 29.Rf3 Rd8 30.Kf2 Rd2 31.Kg1 Qd4 32.Rf2 Qf2 33.Kh1 Qe1) 0-1. ch77essi988 (1760) - albettyer (1785), Rated Blitz game, lichess.org, 2016.

4.b5 f5 5.a4 (5.e3 Be7=) 5...g6 (5...f4 6.g3=+) 6.c3 Bg7 (6...f4 7.Nf3=) 7.Ra3 (7.Nf3 0-0=) 7...0-0 8.e3 Be6 9.c4 (9.Qf3 c6=) 9...c6 10.Nc3 cb5 (10...f4 11.d4=+) 11.ab5= Qc7 12.d3 Qc5 (better 12...f4=+) 13.Ra2?? (better 13.Qb3=) 13...Bc3-+ 14.Ke2 (14.Rd2 a6 15.d4 Qc7-+) 14...Bg7 (14...Bc4!? 15.Ra4 Bb5 16.Rh4-+) 15.Nf3 (15.Ra4 Qc7-+) 15...d5 (15...Bc4!? 16.Rd2 Bb5 17.Qb1-+) 16.Ke1 (16.Rc2 dc4 17.dc4 f4-+) 16...dc4 17.dc4 Bc4 (17...Bc3 18.Nd2 Bc4 19.Bc4 Qc4 20.Rc2-+) 18.Bc4 (18.Rc2 Qb4 19.Qd2 Qd2 20.Nd2 Be6-+) 18...Qc4 19.Qe2 Qb3 20.Rd2 (20.Kf1 Qb1 21.Ne1 Bc3-+) 20...Bc3 21.Qd3 (21.Nd4 Qa2 22.Qd1 Rd8-+) 21...Bd2 22.Qd2 (22.Kd2 Qb2 23.Ke1 Rc8-+) 22...Qb5 23.Nd4 Qc4 24.f3 (24.Qe2 Qb4 25.Qd2 Qb1 26.Qd1 Qe4-+) 24...Na6 (better 24...Rd8!? 25.f4-+) 25.Kf2 Rad8 26.Rc1 Qa4 (26...Qb4 27.Rd1-+) 27.Qc2 (27.g3 Rd5-+) 27...Qc2 28.Rc2 (28.Nc2?? Rd2 29.Ke1 Rg2-+) 28...Nb4 29.Rb2 (29.Rc4 a5 30.g3-+) 29…Nd3 (29...Nd3 30.Kg3 Nb2-+) 0-1. ch77essi988 (1620) - lordcashflow (1640), Rated Blitz game, lichess.org, 2018.

4.b5 Bf5 5.a4 Be7 6.c4 (6.e3 Be6=+) 6...Nd7 (6...a6 7.e3=+) 7.Nc3 0-0 (7...Bg4 8.d4=) 8.e3= c6 (8...Bg6 9.d4=) 9.Be2 (9.bc6 bc6 10.Qf3 Be6 11.Qc6 Rc8=) 9...cb5 (9...Nc5 10.a5=) 10.cb5 (10.ab5 Nb6=) 10...Nc5 11.d4?? (11.Nf3 Rc8=) 11...Ne6?? (better 11...Qa5 12.Kf1 Qc3 13.dc5 dc5-+) 12.Bf3 Rc8 13.Nd5 (13.Nge2 Qd7+=) 13...Qa5 14.Qd2 Qd2 (14...Qd8 15.e4 Bg6 16.h4= (worse 16.Ne7 Qe7 17.Qe3 d5-/+)) 15.Kd2+= Rc2 16.Kd1 Bd8 (16...Re8 17.Ne2 (17.Ne7?! Re7 18.Ne2 Ng5=) 17...Rc4 18.b6+/-) 17.e4+/- Rf2 18.Ne2 (better 18.Ke1!? Rb2 19.ef5 Nd4 20.Kf1+=) 18...Bg6 (18...Bh3 19.b6 (worse 19.gh3 Rf3 20.Rg1 Ng5-+) 19...Bb6 20.Nb6 ab6 21.Rg1-/+) 19.Ke1 Re2 20.Ke2 (worse 20.Be2 Be4 21.Bf3 Bf3 22.gf3 Nd4=+) 20...Nd4 21.Kf2 f5 22.ef5 Bf5 23.Rhe1? (better 23.Rad1 Nf3 24.Kf3=) 23...Nc2-+ (23...Nf3?! 24.Kf3 Be6 25.Rad1=) 24.Rad1 Ne1 25.Re1 Be6 26.Nc3 (26.Rc1 h6-/+) 26...b6 (26...Ba5 27.Rc1 Rc8 28.Ne2-+) 27.Bc6 (27.Nd5 Bg5-+) 27...Bf6 28.Ne4 (28.Nd5 Be5-+) 28...Be5 29.Rd1 Rd8 30.Bd5 Bd5 31.Rd5 f6 (31...Bh2 32.g3 f5 33.Rf5=+) 32.Nd2 Kf7 (32...Bh2?! 33.g3-/+) 33.Ne4 (33.Nf3 Ke6 34.Rd3 Rc8-+) 33...Ke6 (33...Bh2?! 34.g3 Ke6 35.Rh5-+) 34.Rd2 Rc8 (34...Bh2?! 35.g3-+) 35.Ra2 g6 (35...Bh2 36.g3 Rc1 37.Re2 Bg1 38.Kg2-+) 36.Nd2 h6 (worse 36...Bh2 37.g3-+) 37.Nf3 g5 38.Ne5 (38.Ke3 Rc4-+) 38...de5 (38...fe5 39.Ra3-+) 39.Ke3 (39.g4 Rc4 40.Kg3 e4-+) 39...f5 40.a5 (40.Kd2 f4-+) 40...Rc3 41.Ke2 Rb3 42.ab6 ab6 43.Rc2 Rb5 44.Rc6 Kd5 45.Rh6 g4 (45...Rb2 46.Kf1 g4 47.h4 gh3 48.Rh3-+) 46.Rh8 (46.h4 f4 47.Rg6 Rb2 48.Kf1 g3-+) 46...Ke4 47.Rd8 Rb2 48.Kf1 Ke3 49.Rd1 e4 50.Kg1 (50.Re1 Kf4-+) 50...Kf4 (50...f4!? 51.Re1 Kd3 52.h3 gh3 53.gh3-+) 51.Rf1 (51.g3 Ke5-+) 51...Ke5 52.h3 (52.Re1 f4-+) 52...gh3 53.gh3 Rb3 (better 53...f4!? 54.h4-+) 54.Kh2 e3 55.Rf3 (55.h4 f4 56.Kg2-+) 55...f4 56.h4 (56.Rf1 Ke4 57.Re1 Rb2 58.Kg1 f3-+) 56...Rb2 (56...Rb1 57.Kg2 e2 58.Rb3 Rb3 59.Kf2 Re3 60.Ke1 f3 61.h5 f2 62.Kf2 e1Q 63.Kg2 Qd2 64.Kf1 Re1) 57.Kh3 (57.Kg1 Rb1 58.Rf1 Rf1 59.Kf1-+) 57...e2 58.h5 (58.Rc3 e1Q 59.Rb3 Qg1 60.Rb5 Rb5 61.h5 Qg3) 58...e1Q 59.Kg4 (59.Ra3 Qh1 60.Kg4 Rg2 61.Rg3 Rg3) 59...Qg1 (59...Rg2 60.Rg3 Qg3) 60.Kh4 Rh2 61.Rh3 Rh3 (61...Qg3) 62.Kh3 Qh1 (62...Qg3) 63.Kg4 Qh5! 64.Kh5 b5 65.Kg6 b4 66.Kf7 b3 67.Ke7 b2 68.Kf7 (68.Kd7 b1Q 69.Kc7 Qc2 70.Kb7 Kd6 71.Kb6 Qb3 72.Ka5 Kc5 73.Ka6 Qb6) 68...b1Q 69.Ke7 (69.Kg7 Qe4 70.Kg8 Kf6 71.Kh8 Kg6 72.Kg8 Qe8) 69...Qb6 (69...Qb7 70.Ke8 Ke6 71.Kd8 Qd7) 70.Kf7 f3 (70...Qf6 71.Kg8 Qe7 72.Kh8 Kf6 73.Kg8 Qg7) 71.Ke7 (71.Kg7 f2 72.Kh7 f1Q 73.Kg7 Qbg1 74.Kh6 Qh3) 71...Qb7 72.Kd8 (72.Ke8 Ke6 73.Kd8 Qd7) 72...Ke6 73.Ke8 Qb8 (73...Qe7) 0-1. ch77essi988 (1645) - Gati (1805), Rated Blitz game, lichess.org, 2016.

4.b5 g6 5.a4 Bg7 6.c3 0-0 7.Ra3 f5 8.e3 Nd7 9.Be2 Nf6 10.Nf3 h6 11.Nd4 Bd7 12.Bf3 Rb8 13.0-0 d5 14.Ne2 Ne4 (14...c6 15.d4=) 15.d3 Qe7 (15...Nf6 16.c4=) 16.de4 (better 16.Nf4!? Nf6 17.Nd5 Nd5 18.Bd5+/-) 16...de4= 17.Be4 (17.Nd4 ef3 18.Qf3 c5=+) 17...fe4=+ 18.Nf4 Bf5 19.Qb3 (19.Ne2 Rfd8 20.Qc2 Rd3=+) 19...Rfd8 20.Ra2 g5 (20...Be5 21.Rd2-/+) 21.Nh5 Be6 22.Qc2 (better 22.c4!? Rd3 23.Qc2-/+) 22...Ba2-+ 23.Ng7?? (better 23.Qa2 Rd3 24.Qc4-+) 23...Bb1 (23...Kg7?! 24.Qa2 Rd7 25.Qe2-+) 24.Qb1 Kg7 25.Qb2 Rd3 26.c4 Qf6 27.Qf6 Kf6 28.Rc1 (28.a5 Rc3 29.f3 ef3 30.Rf3 Ke6-+) 28...Rbd8 (28...Ra3 29.a5-+) 29.a5 (29.Kf1-+) 29…Rd1 (29...Rd1 30.Rd1 Rd1) 0-1. ch77essi988 (1700) - Evgeny1987 (1660), Rated Blitz game, lichess.org, 2017.

4.b5 g6 5.a4 Bg7 6.c3 b6 7.Nf3 Bb7 8.e3 0-0 9.g3 (9.d4 a6=) 9...a6 10.ba6 Na6 11.Bg2 Nc5 12.0-0 (12.d4 Ne4=) 12...Ba6 13.Nd4 Bf1 (13...d5!?-/+) 14.Ba8= Qa8 15.Qf1 Nb3?? (15...c6 16.Qc1=) 16.Ra2 (16.Nb3 Qe4+-) 16...Qd5?? (16...Nd4 17.cd4 Rb8 18.Nc3=) 17.Qg2?? (better 17.c4 Qa5 18.Nb3+-) 17...Qc4 18.Qf1 Qd5 19.Qg2?? (better 19.c4 Qa5 20.Nb3+-) 19...Qg2= 20.Kg2 Nc5 (20...Nc1 21.Ra1=) 21.Kf1 (21.Na3 f5+=) 21...f5 22.Nc6 Ra8 23.d4 (23.Ne7 Kf8 24.Nd5+=) 23...Na4 (23...Ra4 24.Ra3 Ra3 25.Na3=) 24.Kg2 (better 24.c4!?+/-) 24...b5= 25.Ne7 (25.Ra3 Ra6 26.d5 Kf8=) 25...Kf8=+ 26.Nd5 c6 27.Nb4 Rc8 28.c4 h5 (28...Ke8 29.Kf3=+) 29.cb5+= cb5 30.Nd5 (30.Na3 Nc3 31.Rc2 Rc7+=) 30...Rc1 (30...Rb8 31.Ra3=) 31.Nd2 (better 31.Na3!? Nc3 32.Nc3 Rc3 33.Nb5+/-) 31...Kg8 (31...Ke8 32.Kf3=+) 32.Nf3 Kh7 (32...Bh8 33.Ra3 Rc2 34.Ne1+=) 33.Ng5= Kh6?? (better 33...Kg8=) 34.Nf7+- Kh7 35.Nd6 Nc3 (35...Rb1 36.Nf4+-) 36.Nc3 Rc3 37.Nb5 Rb3 38.Nc7 Bf8 39.Ne6 Bb4 (39...Ba3 40.Rc2 Rb6 41.Rc7 Kh8 42.Nc5+-) 40.Nc5 (40.Ra7 Kh8 41.Rb7 Rb2+-) 40...Rb1 (40...Bc5 41.dc5 Rc3 42.Ra7 Kh6 43.Rc7+-) 41.Nd3 (better 41.Ra7 Kg8 42.Rb7 Bc5 43.Rb1 Be7+-) 41...Be1 42.Rb2 (42.Ne5 Rb6+-) 42...Ra1 (42...Rb2 43.Nb2 (43.Ne1?! g5+=) 43...Kg7 44.h4+-) 43.Re2 (43.Ne5 Ra6+-) 43...Ba5 44.Nf4 Kh6 (44...Kg7 45.f3+-) 45.d5 (45.Rc2 Rb1+-) 45...Rd1 (45...g5 46.Ne6+-) 46.Rc2 Kg7 47.Rc5 Bc7 (47...Be1+-) 48.Ne6 (better 48.Rc7!? Kf6 49.h4 Rd2+-) 48...Kf6 49.Nc7 Ke5 (49...Ke7 50.Nb5+-) 50.Kf3 (better 50.Rc6 Ke4+-) 50...Kd6 51.Rc6 Kd7 52.Rg6 (better 52.Kf4 Rd5 53.Nd5 Kc6+-) 52...Kc7 53.Rg5 Rd5 54.Rh5 Kd7 55.Kf4 Ke6 56.g4 Ra5 (56...Rd2 57.gf5 Kf6 58.f3+-) 57.Rf5 Rf5 (57...Ra2 58.Kg5 Ra8+-) 58.gf5 Kf6 59.h4 (59.h4 Kf7 60.Kg5+-) 1-0. ch77essi988 (1725) - Radosavljevic (1925), Rated Blitz game, lichess.org, 2017.

4.b5 g6 5.a4 Bg7 6.c3 Bd7 7.e3 0-0 8.d4 a6 9.c4 (9.ba6 Na6 10.Nf3 Be6=) 9...f5 10.Nc3 c6 (10...f4 11.Qf3 ab5 12.cb5 (12.Qb7?? Bc6 13.Qa8 Ba8 14.ab5 Nd7-+; worse 12.Nb5 fe3 13.fe3 c6-/+) 12...fe3 13.fe3=+) 11.Nf3 ab5 12.cb5 (12.ab5 Ra1 13.Qa1 f4=) 12...cb5 (12...f4!?=) 13.Bb5+= Bb5 (13...Qa5 14.Rc1+=) 14.ab5 Ra1 15.Qa1 Nd7 16.0-0 Nf6 17.Qa4 Ne4 (17...Qc7 18.Rc1+=) 18.Ne4 (18.Nd5!?+/-) 18...fe4+= 19.Nd2 f5 20.Ra1 Qc7 21.Qc4 Qc4 (21...Qf7 22.Qf7 Kf7 23.Rc1+/-) 22.Nc4+/- d5 (22...Rd8!?+/-) 23.Nb6 Bf6 (better 23...f4+/-) 24.Ra8?? (better 24.Nd5 Kf7 25.Ra7+-) 24...Bd8?? (better 24...Ra8 25.Na8 Bd8=) 25.Nd5 (25.Nd7!? Re8 26.Nf6 Kf7 27.Ne8 Ke8+-) 25...Kf7 (25...Bg5 26.Ra7 Rb8 27.Nc7+-) 26.h3 (better 26.Rb8!? Ke6 27.Nf4 Kd6 28.Rb7 Be7+-) 26...Ke6+/- 27.Nc3 Kd7 (27...Be7 28.Ra7 Bb4+/-) 28.d5 (28.Kf1 Rf6+-) 28...Rf6 (28...Be7 29.Ra7 Kc7+=) 29.Ra7 (29.Na4 Rd6 30.Nc5 Ke7 31.Nb7 Rd5 32.Nd8 Rd8 33.Rd8 Kd8+-) 29...Kc7 (better 29...Rb6 30.Ra5 Rd6=) 30.Na4?? (30.f3 ef3 31.gf3 Rd6+/-) 30...Be7?? (better 30...Kb8 31.b6 Bb6 32.Nb6 Ka7-+) 31.b6+/- Kb8 32.Nc3?? (better 32.Ra5+/-) 32...Rb6-/+ 33.Ra3?? (33.Ra2 Bf6 34.Rc2 Rd6-/+) 33...Bd6 (better 33...Ba3 34.g4 Bb2-+) 34.Ra1-/+ Be5 35.Rc1 Kc7?? (better 35...Rd6-/+) 36.Na4+- Rc6 37.dc6 bc6 38.Nc5 Kd6 (38...Bd6 39.f4 Bc5 40.Rc5+-) 39.Nb7 Kc7 40.Na5 Kb6 (40...c5 41.Rc5 Kd6 42.Rb5+-) 41.Nc6 (better 41.Nc4 Kb5 42.Ne5 c5+-) 41...Bd6 42.Nd4 Bc5 43.Rc5! Kc5 44.Kf1 (better 44.Ne6!? Kd5 45.Nf8 h6 46.Ng6 Ke6+-) 44...Kd5 45.Ke2 f4 46.Nc2 (46.h4 h6+-) 46...g5 47.Ne1 Ke5 48.Nc2 Kd5 49.Nd4 Ke5 50.Nc6 Kf5 51.Ne7 Kf6 52.Nd5 Ke5 53.Nc3 Kf5 (53...h6 54.ef4 gf4 55.g4+-) 54.ef4 gf4 55.Nd5 (better 55.g4 Ke5+-) 55...Ke5 56.Ne7 Kf6 57.Ng8 (better 57.Nc6!? Ke6+-) 57...Kg7 58.Ne7 Kf6 59.Nd5 Ke5 60.Nc3 h5?? (60...Kf5 61.g4 Ke5+-) 61.Nd1 (61.g4 fg3 62.fg3 Kd4+-) 61...h4 62.f3 e3 (62...ef3 63.Kf3 Kf5 64.Nf2+-) 63.Nc3 (better 63.Ne3!? Ke6+-) 63...Kd4 64.Ne4 Ke5 65.Ng5 (65.Nc5 Kf5+-) 65...Kf5?? (better 65...Kf6 66.Nh7 Kg7=) 66.Nf7+- Kf6 67.Nd6 Ke5 68.Nc4 Kd5 (68...Kd4 69.Nb2 Ke5+-) 69.Ne3! fe3 (69...Ke5+-) 70.Ke3 Ke5 71.f4 Kf5 72.Kf3 Kg6 73.Kg4 Kf6 74.Kh4 Kf5 75.g3 Kg6 76.g4 Kh6 77.g5 Kg6 78.Kg4 Kg7 79.f5 Kf7 80.h4 Kg7 81.h5 Kh7 82.f6 Kg8 83.Kf5 Kh7 (83...Kf7 84.g6 Ke8 85.f7 Kd7 86.f8Q Kc6 87.g7 Kb6 88.Qd6 Kb5 89.g8Q Ka4 90.Qc4 Ka5 91.Qcb4) 84.Ke6 Kg8 (84...Kh8 85.g6 Kg8 86.h6 Kh8 87.Ke7 Kg8 88.f7 Kh8 89.f8Q) 85.Ke7 Kh7 86.f7 Kg7 87.f8B (87.f8Q Kh7 88.g6) 87...Kh7 (87...Kg8 88.h6 Kh7 89.Kf7 Kh8 90.Bg7 Kh7 91.g6) 88.h6 (88.Kf7 Kh8 89.Bg7 Kh7 90.g6) 88...Kg6+- 89.Ke6 Kh7 (89...Kh5 90.h7 Kg4 91.g6 Kf4 92.Bd6 Kf3 93.g7 Kg2 94.g8Q Kf2 95.Qg3 Ke2 96.Qg2 Ke3 97.h8Q Kd3 98.Qhh3 Kd4 99.Qd5) 90.Bg7 (90.Bg7 Kg6 91.Bf6 Kh5 92.h7 Kg6 93.Be7 Kh5 94.Kf5 Kh4 95.Kf4 Kh3 96.Kf3 Kh2 97.Bc5 Kh3 98.h8Q; 90.Kf7 Kh8 91.Bg7 Kh7 92.g6) 1-0. ch77essi988 (1705) - A_Mihail (1900), Rated Blitz game, lichess.org, 2016.

4.c3 Qe7 5.d4 Be6 6.f4 (6.e3!?=) 6...Nd7 7.d5 Bd5?? (better 7...Bf5-/+) 8.Qd5+- 0-0-0 9.Nf3 Re8 10.Nd4 g5 11.Nf5 (11.g3 gf4 12.gf4 Qe3+-) 11...Qe4? (11...Qe6 12.Qa5+/-) 12.Qa5?? (better 12.Qe4!? Re4 13.Nd2+-) 12...a6 (12...Qc2 13.Nd2+/-) 13.Nd2 Qe6 (13...Qc2 14.Nd4 Qc3 15.N4b3+/-) 14.Nd4 White plans b5 (better 14.e4 d5 15.Nd4+-) 14...Qe4?? (better 14...Qe3+-) 15.Ne4 Re4 16.b5 gf4 (16...Nc5 17.ba6 ba6 18.g3+-) 17.ba6 ba6 18.Qa6 Kd8 19.Qa8 (19.Nc6 Ke8 20.Qc8) 19...Ke7+- 20.Qe4 Ne5 21.Qf4 Bg7 22.Nf5 Kf8 23.Ng7 (23.Rb1 Nc6 24.Qa4 Kg8 25.Qc6 h5 26.Qe8 Kh7 27.Qf7 Rg8 28.Qh5 Bh6 29.Qh6) 23...Kg7 24.Qg3 Kf8 25.0-0-0 (25.a4 Rg8 26.Qf2 Kg7+-) 25...Ke7 26.Qh4 Rb8 27.Kc2 (better 27.Qh7 Ra8 28.Qb1 Ra3+-) 27...Nc4 28.Kd3 (better 28.Qc4 Rd8+-) 28...Nb2 29.Kd4 (better 29.Kd2 Nd1 30.Kd1 Rb2+-) 29...Nd1 30.Qe4 Kd7 31.e3 (better 31.g3 Kd8+-) 31...Rb6 32.Qf5 (better 32.Qg4 Kd8 33.Qd1 Rb2+-) 32...Ke8 33.Bc4 (better 33.Qc8 Ke7 34.Qc7 Kf8 35.Qb6+-) 33...Nb2 34.Be2 (34.Qc8 Ke7 35.Qc7 Ke8 36.Qf7 Kd8 37.Be6 Rb7 38.Qb7 Ke8 39.Qd7 Kf8 40.Qf7) 34...c5 35.Kd5 Rb4 36.Qf6 (36.cb4 Ke7 37.Rf1 Nc4 38.Qf6 Kd7 39.Qf7 Kd8 40.Ke6 Nb6 41.Qe7 Kc8 42.Rf8) 36...Rg4 37.Bg4 Nd3 (37...h5 38.Be6! fe6 39.Ke6 d5 40.Qe7) 38.Qd6 (38.Kd6 c4 39.Qe7) 38...Nf2 (38...Ne5 39.Qe5 Kf8 40.Rb1 f6 41.Qf6 Ke8 42.Rb8) 39.Qc6 (39.Rb1 Ng4 40.Rb8) 39...Kf8 40.Rf1 (40.Qh6 Ke8 41.Rb1 Ne4 42.Rb8 Ke7 43.Qh4 Nf6 44.Ke5 c4 45.Qf6) 40...Kg7 (40...c4 41.Rf2 f5 42.Rf5 Kg8 43.Qh6 Kh8 44.Qf8) 41.Rf2 f5 (41...h5 42.Qf6 Kh7 43.Qf7 Kh6 44.Rf5 hg4 45.Rh5) 42.Rf5 Kg8 (42...h6 43.Qf6 Kh7 44.Qe7 Kg6 45.Qf7) 43.Qe6 (43.Qh6 c4 44.Qf8) 43…Kg7 (43...Kg7 44.Rf7 Kh8 45.Qe8; 43...Kh8 44.Rf8 Kg7 45.Qf6). tunniato - sa3ood88, lichess.org, 2020.

4.c3 Be7 5.b5 0-0 6.e3 c6 7.d4 cb5 8.Bb5 Bd7 9.Be2 Bc6 (better 9...Nc6=) 10.Nd2?? (better 10.d5 Bd7 11.Nf3+=) 10...Bg2-+ 11.Ngf3?? (11.Bf3 Bh1 12.Bh1-+) 11...Bh1 12.Nh4 Qd7 13.Nf5 (13.Bf3 Bf3 14.Qf3-+) 13...Qf5 14.Nf3 (14.Bf3 Bf3 15.Qf3 Qd7-+) 14...Bf3 (better 14...d5 15.Qb1 Qd7 16.Nd2-+) 15.Kd2 (15.Bf3 Nc6 16.Rb1-+) 15...Be2 16.Qe2 Qe4 (16...Rc8 17.Qf1-+) 17.Rf1 f5 18.f3 Bg5 (better 18...Qd5-+) 19.fe4 Be3?? (better 19...Nd7 20.Rf5 h6-+) 20.Qe3 (better 20.Ke3 fe4 21.Qb5+=) 20...f6?? (better 20...fe4!? 21.Qe4 Nc6=) 21.Qf4 (21.ef5 Nd7 22.Qe6 Rf7 23.Qd6 Nb6+-) 21...Nd7? (21...fe4 22.Qe4 Nc6 23.Qd5 Rf7 24.Rb1+=) 22.Rg1?? (better 22.Qd6!? Nb6 23.Qe6 Kh8 24.Qf5+- (24.Rf5?! Rae8 25.Qb3 Re4+/-)) 22...Rae8 (better 22...fe4 23.Qe4 Rf7 24.Qb7 Nb6+=) 23.Rg7?? (better 23.Qf5 Nb6 24.Kd3+/-) 23...Kg7-+ 24.ef5 (24.Qf5 Re7-+) 24...Kh8 (24...Nb6 25.Kd3 d5 26.Qc7 Rf7 27.Qg3 Kh8 28.Qd6-+) 25.Qh6?? (25.Qd6 Ne5! A) 26.de5?? Rd8-+ (26...fe5?! 27.Qc7=); B) 26.Qb4 Nf3 27.Kc2-+) 25...Rg8 (better 25...b5-+) 26.Qf6 (26.Kd3-+) 26...Nf6 27.Kc2 Rg2 28.Kb3 Ree2 29.c4 (29.c4 Re3 30.Kb4 Rb2 31.Ka4 Ra2 32.Kb4 a5 33.Kb5 Rb3; 29.Kc4 Ra2 30.d5 Rab2 31.Kd3 Rh2 32.Ke3 Rh3 33.Kd4 b5 34.c4 Rd2). chessovolution – Lues, Rated UltraBullet game, lichess.org, 2021.

4.c4 c5 5.b5 b6 6.e3 Be7 (6...a6 7.ba6 Be6 8.Nf3=) 7.Nf3 (7.Qf3!? d5 8.Nc3+/-) 7...0-0 8.Be2 Nd7 9.Nh4 a6 10.Nf5 ab5 11.cb5 Ne5 12.Ne7 Qe7 13.0-0 Be6 14.a4 Bc4 15.Na3 (better 15.d4!? Be2 16.Qe2+=) 15...Be2-/+ 16.Qe2 d5 (16...Ra4 17.Nc2 Rfa8 18.Ra4 Ra4 19.d4=+) 17.Nc2 (17.d4 Nd7 18.Qf3 Ra4 19.Qd5 cd4 20.ed4 Qe6 21.Qe6 fe6=) 17...Nc4 18.d3 Nd6 19.Qf3 Qe5 (19...Qe6!?=) 20.d4+= cd4 21.Nd4 Qe4 22.Nc6 Qf3 (22...Ra4 23.Ne7 Qe7 24.Ra4 Nb5 25.e4+= (worse 25.Qd5 Nc3 26.Qb3 Na4 27.Qa4 Qe5=+)) 23.gf3 Nf5 (23...Rfe8 24.Rfd1+/-) 24.Kg2 Nh4 25.Kg3 Ng6 26.Rfd1 Ne5 27.Ne7 Kh8 28.f4 Nc4 29.Rd5 Rfd8 30.e4 (30.Rc1 Nb2 31.a5 ba5+-) 30...Rd5+/- 31.ed5 h5 32.Nc6 (better 32.Rc1 Ra4 33.Nc8+-) 32...Nb2?? (better 32...Nd6+/-) 33.a5 (33.d6 g6+-) 33...ba5 (33...Nc4 34.ab6 Nb6 35.Ra8 Na8 36.d6+-) 34.Ra5 (better 34.d6 Nc4 35.d7+-) 34...Ra5 35.Na5 (35.Na5 Na4 36.Nc4+-) 1-0. Atotheking (1700) - DrARO (1615), lichess.org, 2020.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qh5 7.Rc1 (7.a3 a5=) 7...c6 (7...Bb4!? 8.a3 Be7–/+) 8.b5 Be6 (worse is 8...cb5 9.Nb5 Na6 10.Qa4+=) 9.e3 Qd1 10.Kd1 Ba3 11.Rb1 0-0 (11...c5 12.d4=) 12.Nge2 Bc4 (12...c5!?=) 13.Nd4 Bf1 14.Rf1 Bc5 15.bc6 bc6 16.Nf5 Re8 17.Na4 Bf8 18.Ke2 c5 19.Rfc1 g6 20.Ng3 Na6 21.a3 f5 22.f4 Re6 23.Rb7 h5 24.Nf1 Rc6 25.Rc4 Nb8 26.d3 Ra6 27.Nd2 Nc6 28.Nb3 Na5 29.Na5 Ra5 30.Rc7 Re8 31.Nc5 Ra3 32.Rd4 Ra2 33.Kf3 Rc2 34.Ne6 Rc7 35.Nc7 Rb8 36.Nd5 a5 37.Nf6 Kg7 38.Nd7 Rd8 39.Ke2 a4!–/+ 40.Kd2 a3 41.Kc2 a2 42.Kb2 Ra8 43.Ka1 Ba3 44.Ka2 Bc5 45.Kb3 Bd4 46.ed4 Rd8 47.Nc5 Rd4 48.g3 Kf6 49.Kc3 Rd8 50.d4 h4! 51.Kc4 Ke7 52.Nb7 Rb8 53.Na5 Rb2 54.Nc6 Kd6 55.Ne5 h3 56.Nf7 Ke7 57.Ng5 Rh2 58.Kd5 Rh1 (58...Rh1 59.Nh3 Rh3–+) 0–1. Bulcourf,Carlos (2055) – Ibar,M (2175), Villa Martelli ARG, 2013.

4.c4 Bd7 5.e4 (5.e3 a5=) 5...Be7 (5...f5 6.ef5 Nc6 7.b5 Qe7 8.Be2-/+) 6.Nc3 c6 7.a4 (7.Qf3 0-0=) 7...0-0 8.Be2 Na6 (8...f5 9.ef5 Bf5 10.b5-/+) 9.Rb1 (9.b5 Nc5=) 9...Re8 10.Nf3 f5 11.d3 fe4 12.Ne4 (12.de4!? Bf6 13.e5 de5 14.Ne4-/+) 12...d5-+ 13.cd5 Bb4 14.Nfd2 (14.Ned2 cd5 15.0-0-+) 14...cd5 15.Ng3 Bg4 (better 15...Qa5 16.Rb2 Ba4-+ (worse 16...Qa4 17.0-0-+)) 16.0-0 Be2 17.Ne2 Qa5 18.Rb2 Nc5 19.Nd4 (19.Nb3 Qa4 20.Nc5 Qd1 21.Rd1 Bc5 22.Nf4-+) 19...Nd3 20.Rb3 (20.Ra2 Nf4-+) 20...Nf4 (20...Nc5 21.Rb2 Na4 22.Rc2-+) 21.g3 Ne6 (better 21...Bd2 22.gf4 Bb4-+) 22.Nb5? (22.Ne6 fe6 23.Rd3-+) 22...Bd2 (22...a6 23.Qg4 Bd2 24.Nd6-+) 23.Nd6 Re7 (23...Reb8 24.Rb5 Qc7 25.Qd2 Qd6 26.Qd5-+) 24.Rb7 (24.Rb5 Qc3 25.Rd5-+) 24...Rb7 25.Nb7 Qb4 26.Qb1 (26.Nd6 Rd8 27.Nf5 Bc3-+) 26...Qb1 (better 26...Rb8 27.Qa2 Rb7 28.Qd5-+) 27.Rb1 Rb8 28.Kf1 Nc5! 29.Ke2 (29.Nc5 Rb1 Pinning (29...Rb1 Deflection)) 29...Bh6 30.a5 (30.Rb5 Nb7 31.Rd5 Re8 32.Kf1 Rd8-+) 30...Rb7 31.Rb7 Nb7 0-1. forsennato - jfce4 (1780), Rated Rapid game, 2015.

4.c4 Be6 5.d3 Nc6 (5...d5!? 6.c5 a5-/+) 6.a3=+ Qd7 7.e3 g6 (7...d5!? 8.cd5 Qd5=) 8.d4+= d5 9.c5 Bg7 10.Bb5 0-0 11.Nc3 a6 12.Ba4 Rac8 13.b5 ab5 14.Bb5 Ra8 15.Nge2 Qe8 (15...Rfd8 16.Nf4+=) 16.Nf4+/- f5 17.0-0 (17.Ncd5?! Bd5 18.Nd5 Rd8=; worse 17.Ne6 fe6 18.0-0 f4=) 17...Rd8 (17...Qd7+/-) 18.Ne6 (better 18.Qf3!?+/-) 18...fe6+= 19.Qa4 Ra8 20.Qb3 Qd7 21.a4 Rf7 (21...f4 22.Rab1=) 22.Ne2 (22.a5 Rff8+/-) 22...e5 23.de5 Be5 24.Rad1 Rd8 25.f3 (25.Nd4 Bd4 26.ed4 Re7+=) 25...Qe6= 26.e4 (better 26.Nd4 Nd4 27.ed4=) 26...de4?? (better 26...fe4 27.fe4 Rf1 28.Rf1 Qe7=+) 27.Qe6+- Rd1 28.Rd1 ef3 29.gf3 (better 29.Rd7 Bh2 30.Kh2 Nd8 31.Rd8 Kg7+-) 29...Bf6 30.Bc6 (30.Bc4 Kh8 31.Qf7 Bd4 32.Nd4 Nd4 33.Qf6) 30...bc6 31.Rd7 (31.Rd7 h6 32.Qf7 Kh8 33.Qe8) 1-0. bjagus (1730) - controlaltdelete (2205), lichess.org, 2011.

4.c4 Be7 5.a4 0-0 6.d4 Bf5 7.Nc3 c5 8.e4 Bg6 (8...cb4 9.ef5 bc3 10.Qb3-/+) 9.b5 (9.dc5 dc5 10.Qd8 Bd8 11.bc5 Ba5-/+) 9...cd4 10.Qd4 Qa5 (10...f5 11.Nge2-/+) 11.Nge2 (11.Kd1 Nd7=) 11...Nd7=+ 12.g3? (12.Qd5 Rfe8=+) 12...Rae8 (12...Nc5!? 13.Bg2 Nb3-+) 13.Bg2-/+ Bd8 (13...f5!? 14.0-0 fe4-/+) 14.0-0 (14.Qd6 Ne5=) 14...Bb6 15.Nf4?? (better 15.Qd6 Nc5 16.Qf4=) 15...Bd4-+ 16.Rfd1 Qc3 17.Rd4 Qa1 18.Bf1 Qd4 19.Ne2 Qe4 20.Bg2 Qf5 (20...Qb1 21.Bf1 Re2 22.b6 Qe1 23.Kg2 Qf2 24.Kh3 Bf5 25.Kh4 Qh2 26.Bh3 Qh3) 21.Nf4 Ne5 (21...Re1 22.Bf1 Qb1 23.Kg2 Rf1 24.Nd3 Rg1 25.Kf3 Qd3 26.Kg4 Qf5 27.Kh4 Qh5) 22.Nd5 Bh5 (22...Ng4 23.Nf4 Qc2 24.Nh3 Re1 25.Bf1 Qc4 26.Kg2 Be4 27.f3 Qf1) 23.f3 Bf3 (23...Qb1 24.Bf1 Nf3 25.Kg2 Qc2 26.Be2 Qe2 27.Kh3 Qh2) 24.Bf3 (24.Ne3 Qe4 25.Nf1 Qd4 26.Kh1 Qf2 27.Ne3 Bg2 28.Ng2 Qf1) 24...Qf3 (24...Nf3 25.Kh1 Qh3 26.Ne7 Re7 27.a5 Qh2) 25.Nc7 (25.h3 Qd1 26.Kh2 Qe2 27.Kg1 Nf3 28.Kh1 Qf1) 25...Ng4 26.Ne8 Qf2 27.Kh1 Qh2 0-1. afsharian - Acer30, lichess.org, 2018.

4.c4 Bf5 5.Nc3 Nd7 (5...Nc6 6.e4 Bg6 7.b5=) 6.e4 Bg6 7.f4 (7.Qb1 Be7=) 7...f5=+ 8.ef5 Bf5 9.g4?? (better 9.Nf3=+) 9...Qh4-+ 10.Ke2 Qg4 (10...Bg4 11.Nf3 0-0-0 12.Bg2-+) 11.Nf3 (11.Ke3 Qg6-+) 11...0-0-0 (11...Qf4 12.d4 Be6 13.Qc1-+) 12.Nd5 (12.d4 Qf4 13.Qc1 Re8 14.Kf2 Qc1 15.Rc1 Nf6-+) 12...Re8 (12...Be4 13.Kf2 Bd5 14.cd5 Qf4 15.Bh3-+) 13.Ne3 (13.Kf2 Be7-+) 13...Qf4 14.h4 (14.Kf2 Be7 15.Nf5 Qf5-+) 14...Bg4 (14...Ne5 15.Ne5 Re5 16.Bh3 Bh3 17.Rh3 Qg4 18.Rf3 Qc4 19.d3 Qh4 20.d4-+) 15.Bg2 (15.Kf2 Nf6 16.Ng4 Ng4 (16...Qg4? 17.Bh3+-) 17.Kg2 g6-+) 15...Qc4 (15...Ne5!? 16.Kf2-+) 16.Kf2 Qd3 (16...Bf3 17.Nc4 Bd1 18.Rad1-+) 17.Re1?? (17.Ng4 f5 18.Ne3 f4-/+) 17...d5 (17...Bf3 18.Qf3 Qd2 19.Kg3-+) 18.Rc1?? (18.Ng4 Re1 19.Qe1 Bb4-/+) 18...Bb4 (better 18...Bf3 19.Bf3 Bb4 20.Nd5 Qd4 21.Kg2 Bd6-+) 19.Ng4 Bc5 (19...Re1 20.Qe1 f5 21.Bf1-+) 20.Kg3 (20.Ne3 Nf6 21.Ng5 b6-/+) 20...h5 (better 20...f5 21.Bf1 Re1 22.Qe1 f4 23.Kg2 Qg6-+) 21.Nge5?? (21.Ne3 Rhf8-/+) 21...Ne5 (better 21...Bd6-+) 22.Rc3?? (22.Rc5 Qg6 23.Ng5-+) 22...Qg6-+ 23.Ng5 (23.Kh3 Nd3 24.Re8 Re8-+) 23...f6 (better 23...Qd6 24.Nf7 Nf7 25.Kh3-+) 24.Rc5 fg5 25.Qa4 (25.Bd5 Qd6 26.Bb7 Kb7 27.Qb3 Kc8 28.Qd5 gh4 29.Kh3 Qd5 30.Rd5-+) 25...gh4 26.Kh2 Qg3 (26...Nf3 27.Bf3 Qg3 28.Kh1 Re1) 27.Kg1 (27.Kh1 Qe1 28.Kh2 Nf3 29.Bf3 Qg3 30.Kh1 Re1) 27...Qe1 (27...Nf3 28.Kh1 Qh2) 28.Kh2 Qg3 (28...Nf3 29.Bf3 Qg3 30.Kh1 Re1) 29.Kg1 Nf3 30.Kf1 (30.Kh1 Qh2) 30…Re1 0-1. afsharian - Fabiano_Instrutor (1685), lichess.org, 2018.

4.c4 g6 5.e4 Bg7 6.Nc3 f5 7.ef5 (7.Bd3 Nc6-/+) 7...Bf5-/+ 8.Qb3 (8.Nf3 Nc6 9.a3 Ne5=+) 8...Qe7 (8...0-0 9.Nf3-/+) 9.Be2 Bd3 (9...Nc6!?-/+) 10.Rc1 Bc3?? (better 10...Bf5=) 11.Qd1?? (better 11.Qc3 0-0 12.Qd3+-) 11...Bf6 (11...Bb2 12.Qb3 Bc1 13.Qd3-+) 12.Nf3 (12.Kf1 Bf5 13.Bg4 Be6-+) 12...Be2 (better 12...Bb2!? 13.Rb1 Bb1 14.Qb1-+) 13.Qe2 Qe2 (13...Nc6 14.Qe7 Ke7 15.Rb1-+) 14.Ke2 0-0 (14...Kd7 15.Rb1-+) 15.Kd3 (15.b5 a6-+) 15...Nc6 16.b5 (16.Rb1 Rad8-+) 16...Ne5 (16...Nb4!? 17.Ke2-+) 17.Ne5 de5 18.Kc2 (18.Ke2 Rfd8-+) 18...Rad8 (better 18...a6 19.Kd1-+) 19.Kb3 (19.Rce1 Rd4 20.d3 Rfd8-+) 19...Rd2 20.Rc2 Rc2 (20...Rfd8!? 21.Rd2 Rd2 22.Rf1-+) 21.Kc2 Rd8 22.Rd1 Rd1 23.Kd1 Kf8 (23...e4 24.f3 e3 25.Ke2-+) 24.Ke2 Ke7 25.Kd3 Kd6 26.g4 (26.a3 c6-+) 26...Kc5 27.f3 (27.h3 e4! 28.Ke4 Kc4-+) 27...h6 (27...Kb4 28.b6 cb6 29.Ke4-+) 28.h3 (28.a3 c6 29.bc6 Kc6-+) 28...g5 (28...Kb4!? 29.g5 Bg5 30.a4-+) 29.a3 a6 30.ba6 ba6 31.Ke4 (31.Kc3 e4 32.Kd2 ef3-+) 31...Kc4 32.Kf5 Bh8 33.Ke4 Kb3 (better 33...c5 34.f4-+) 34.Kd5 Ka3 35.Kc6 (35.Kc4 a5 36.Kc3 e4 37.Kd2 Kb2-+) 35...a5 36.Kc7 a4 37.Kd7 Kb4 38.Ke7 a3 39.Kf7 a2 40.Kg8 Bf6 (40...a1Q 41.Kh8 e4 42.Kg8 ef3 43.h4 f2 44.Kf7 f1Q 45.Kg6 Qaf6 46.Kh5 Qf7 47.Kh6 Q1f6) 41.Kf7 Bd8 42.Kg6 a1Q 43.Kh6 Qd4 44.Kg6 (44.Kg7 Qd7 45.Kg6 Qe6 46.Kg7 Be7 47.Kh7 Bf8 48.h4 Qf7 49.Kh8 Qg7) 44...Qf4 45.Kh5 (45.Kg7 Qf6 46.Kg8 Be7 47.Kh7 Bf8 48.h4 Qg7) 45...Qf3 (45...Qf6 46.h4 Qg7 47.hg5 Qg5) 46.Kg6 (46.Kh6 Qf7 47.h4 Bf6 48.hg5 Qg7 49.Kh5 Qg5) 46...Qh3 (46...Qf6 47.Kh7 Be7 48.h4 Bf8 49.h5 Qg7) 47.Kf5 (47.Kg7 e4 48.Kg6 e3 49.Kf7 Qh7 50.Ke6 e2 51.Kd6 Qe7 52.Kc6 e1Q 53.Kd5 Q1e4) 47...Qf3 (47...Qd3 48.Ke6 Kc5 49.Kf7 Qh7 50.Ke6 Qg6 51.Kd7 Qd6 52.Ke8 Qe7) 48.Ke5 (48.Kg6 Qc6 49.Kg7 Qf6 50.Kg8 Be7 51.Kh7 Bf8 52.Kg8 Qg7) 48...Qg4 (48...Kc5 49.Ke6 Qd5) 49.Kd5 Qf5 50.Kd4 (50.Kc6 Qb5 51.Kd6 Kc4 52.Ke6 Qd5) 50…Bb6 0-1. afsharian – alferzo, lichess.org, 2018.

4.d4 c5 5.c3= cb4 6.cb4 d5 (6...Qb6 7.a3=) 7.a3 a5 8.Nc3?? (better 8.b5=) 8...ab4-+ 9.ab4 (9.Nb1 ba3 10.e3-+) 9...Ra1?? (better 9...Bb4 10.Qc1 Ra1 11.Qa1 Qc7-+) 10.Qa1-/+ Bb4 11.e3 Qa5 12.Nge2?? (better 12.Qa5 Ba5 13.Kd2=+) 12...Qa1-+ 13.Kd2 Qb2 14.Kd3 Bf5 (14...Nc6 15.e4 Bc3 16.Nc3 Nb4 17.Ke3 Qc3 18.Ke2 Qd3 19.Ke1 Nc2) 15.e4 de4 (15...Be4 16.Ke3 Bc3 17.Nc3 Qc3 18.Ke2 Bd3 19.Ke3 Bc2 20.Bd3 Qd3 21.Kf4 g5 22.Kg4 h5) 16.Kc4 Be6 (16...Bd6 17.Nf4 Qb4 18.Kd5 Nc6 19.Ne4 Qd4) 17.d5 0-0 (17...Bc3 18.Nc3 Nc6 19.Ne4 Ne5 20.Kc5 b6 21.Kd6 Qa3 22.Kc7 Qa7 23.Kd6 Qd7) 18.f3 (18.de6 Rc8 19.Kd5 Qd2 20.Nd4 Qf4 21.Nc6 Rc6 22.ef7 Kf7 23.Kd4 Bc3 24.Kd5 Qe5) 18...Rc8 19.Kd4 Nc6! 20.Ke4 (20.dc6 Qd2 Mate attack) 20...Qc2 21.Ke3 (21.Kf4 Bd6 22.Ke3 Bc5 23.Nd4 Bd4 24.Kf4 Qd2 25.Kg3 Qg5) 21...Bc5 22.Kf4 (22.Nd4 Bd4 23.Kf4 Qd2 24.Kg3 Qg5) 22...g5 (22...Qd2 23.Kg3 Qg5) 23.Kg3-+ Bd6 24.f4 gf4 25.Kf3 (25.Nf4 Bf4 26.Kh4 Qg6 27.de6 Qg5 28.Kh3 Qh5) 25...Ne5 26.Kf4 Nd3 (26...Ng4 27.Kf3 Qd3) 27.Ke3 (27.Kf3 Rc3 28.g3 Ne1 29.Kf2 Rf3 30.Ke1 Bb4 31.Nc3 Bc3) 27...Bc5 28.Kf3 (28.Nd4 Bd4 29.Kd4 Nf2 30.Ke3 Rc3 31.Bd3 Rd3 32.Kf4 Qc4) 28...Ne5 29.Kf4 Qf5 30.Kg3 Qg4 (30...Qf2) 0-1. alessandrocarvalhaes (1820) - caiotal (1965), lichess.org, 2020.

4.d4 f5 5.h4 (5.e3 d5 6.a3 Bd6=) 5...Qf6 6.c3 a5 7.b5 a4 (7...f4 8.h5=+) 8.f4 (8.e3!?=) 8...Nd7 9.Na3 (9.e3 Qe6=+) 9...Nb6 10.c4 (10.e3 d5 11.Nc2 Be7-/+) 10...Be7 (10...d5 11.Nc2 Nc4 12.e3-+) 11.g3 (11.e3 Qe6 12.Qd3 0-0-/+) 11...Bd7 (better 11...d5!? 12.c5 Bc5-+) 12.Nf3 (12.Bg2 Rb8=+) 12...h6 (12...d5 13.c5-/+) 13.Qd3 c5 (13...d5 14.cd5 Bb4 15.Kf2 Nd5 16.Nc2=+) 14.0-0-0 (14.Bg2 Be6=+) 14...0-0 (14...Rc8 15.Kb1 d5 16.Bg2-/+) 15.dc5 dc5 (better 15...Qa1 16.Qb1 Qc3 17.Nc2 dc5-/+) 16.Qd7?? (better 16.Ne5=+) 16...Nd7 (better 16...Qc3 17.Kb1 Qb4 18.Kc2 Bf6-+) 17.Nd4 (17.Rd7 Qc3 18.Nc2-+) 17...cd4 18.e3 Ba3 19.Kd2 Nc5 (better 19...de3!? 20.Ke3 Qc3 21.Kf2 Bc5 22.Kg2 Qc2 23.Kh3 Qd1 24.Kh2-+) 20.Ke2 Rfe8 21.Kf2 de3 22.Kg2 e2 23.Be2 Re2 24.Kh3 (24.Kg1 Qc3 25.Rh2 Qg3 26.Kf1 Qf4 27.Kg1 Qh2 28.Kf1 Qf2) 24...Ne4 (24...Qg6 25.Rd8 Rd8 26.Re1 Qg4) 25.Rd3 (25.Rh2 Qg6 26.Rd8 Rd8 27.Rg2 Qg4 28.Kh2 Qg3 29.Kg1 Qg2) 25...Nf2 (25...Qg6 26.Rd8 Rd8 27.Re1 Qg3) 26.Kg2 Nd3 27.Kf3 Rae8 28.Rd1 (28.Re1 Ne1) 28…R8e3 0-1. valla - paoloone (2180), ChessWorld.net, 2017.

4.d4 g6 5.e4 Bg7 6.Nf3 Nd7 (6...f5!? 7.ef5 Bf5=+) 7.c3 0-0 8.Nbd2 a6 (8...Re8 9.Be2=) 9.Bd3+= b5 (9...f5 10.ef5 Re8 11.Be2=) 10.0-0 Bb7 11.Qb3 Qc8 12.Rfe1 White prepares the advance e5 12...Nb6 13.a3 Re8 14.Nf1 (14.Rad1 d5+=) 14...f5 (better 14...c5 15.Bc2 f5 16.bc5 fe4=) 15.e5?? (better 15.Ng5!? Qd7 16.ef5+=) 15...de5 (better 15...Bf3 16.gf3 de5 17.de5 Be5-+) 16.Ne5=+ c5?? (16...Bd5 17.Qb2=+) 17.bc5?? (better 17.Qf7!? Kh8 18.Ng6 hg6 19.Re8 Qe8 20.Qb7+-) 17...Nd5 (17...Be5 18.cb6 (worse 18.de5 Qc5 19.Rac1 Re5-/+) 18...Qc6 19.f3 Qb6 20.a4+=) 18.Nd2?? (18.Ne3 Re5 19.de5 Ne3 20.Re3 (worse 20.fe3 Be5 21.Rad1 Qc7=) 20...Qc5 21.Rae1+/-) 18...Be5=+ 19.de5 Qc7 (19...Nf4 20.Bf1 Qc5 21.Qb4 Nh3 22.gh3=) 20.Nf3 (20.c4 Nf4 21.cb5 ab5 A) worse 22.Qb5 Ba6 23.Qe8 Re8 24.Ba6 Qa5-/+ (24...Qc5?! 25.Nf3=+); B) 22.Bb5 Re5 23.Re5 Qe5 24.Rc1 Bg2 25.Qe3+=) 20...g5?? (better 20...Nf4 21.Re3 Nd3 22.Rd3 Bf3 23.Rf3 Re5-/+) 21.c4 (better 21.Bf5 Nf4 22.Ng5+-) 21...g4?? (21...Nf4 22.Ng5 h6+=) 22.Ng5 (better 22.cd5 gf3 23.c6+-) 22...Nf4 23.Bf5 (better 23.cb5 Bd5 24.Bc4 Qc5 25.Bd5 Qd5 26.Qd5 Nd5 27.Rad1+/-) 23...Qc6?? (23...Ng2 24.Bh7 Kg7 25.cb5 Ne1 26.Re1 ab5 27.Bd3+=) 24.f3 (better 24.Bh7 Kf8 25.Be4+-) 24...Ng6? (24...Qc5 25.Qe3 Re5 26.Bh7 Kg7 27.Qc5 Rc5 28.Be4 Rg5 29.Bb7=) 25.Be4?? (25.Qb4 Re5 26.Re5 Qf6 27.Bg6 Qe5 28.Bf7 Kg7 29.Ne6 Kf7+-) 25...Qc7? (better 25...Qc5 26.Kh1 Be4 27.Ne4 Qc4 28.Nf6 Kg7 29.Ne8 Re8+/-) 26.e6 fe6 27.Bb7 Qb7 28.Ne6 gf3 29.Qf3 (better 29.cb5!? Qf7 30.Qf3 ab5 31.Qf7 Kf7 32.Ng5 Kg7 33.Re8 Re8 34.c6+-) 29...Qf3+/- 30.gf3 Re7 (better 30...bc4!? 31.Re4 Re7+-) 31.c6 Rae8 32.c7 Re6?? (better 32...Nf8 33.Nf8 Re1 34.Re1 Re1 35.Kf2 Re8+/-) 33.Re6 Rc8 34.Rc6 (34.cb5 ab5 35.Rc1 Kf7+-) 34...Ne7 (34...Ne5 35.Ra6 Nf3 36.Kf2+-) 35.Rc5 b4 (35...bc4 36.Rd1+-) 36.ab4 a5 (36...Kf7+-) 37.b5 a4 38.b6 a3 39.b7 Rc7 40.Rc7 Nd5 (40...Kg7 41.Re7 Kg6 42.b8Q h5 43.Qe5 h4 44.Rg7 Kh6 45.Qg5) 41.b8Q 1-0. alessandrocarvalhaes (1815) - gf_jimmy (1800), lichess.org, 2019.

4.e3 Be7 5.Nc3 0-0 6.d4 c6 7.Bd3 f5 8.Nf3 Re8 9.0-0 b6 10.b5 c5 11.Nd5 Bb7 12.Ne7 Re7 13.Bf5 a6 14.dc5 bc5 15.a4 ab5 16.ab5 Ra1 17.Qa1 Bf3 18.gf3 Nd7 19.Kg2 Nb6 20.Rg1 g6 21.Kh1 Qa8 22.Qa8 Na8 23.Bd3 Nb6 24.Kg2 c4 25.Be2 d5 26.f4 f5 27.Ra1 d4 28.Ra6 Nd5 29.Bc4 Rd7 30.b6 de3 31.b7 Rb7 32.Bd5 1–0. marus – Trenti, internet live, 2001.

4.e3 g6 5.Bb5 Nd7 6.Bd7 Bd7 7.Qe2 Bg7 8.b5 (8.Nf3 c5=) 8...0-0 9.Nf3 Be6 10.Qd3 a6 11.Nc3 ab5 12.Nb5 (12.Qb5 b6=+) 12...Ra2 13.Ra2 Ba2 14.Qc3 (14.Nc3 Be6=+) 14...c6 15.Nbd4 (15.Qa3 Qa8 (15...cb5?! 16.Qa2 Qc7 17.0-0=) 16.Qa8 Ra8 17.Nd6 Bd5-/+) 15...f5 16.Qb2 Bd5 17.Qb7 Bf3 (better 17...Qb8!? 18.Qb8 Rb8-/+) 18.Nf3= d5? (better 18...Qa8!? 19.Qa8 Ra8=) 19.Qc6+/- Qa8 (19...f4 20.0-0+/-) 20.0-0?? (better 20.Qa8 Ra8 21.Ke2+/-) 20…Qc6-+ 0-1. FelixMart – densQi, Rated Bullet game, lichess.org, 2020.

4.e3 g6 5.Qf3 Bg7 6.Nc3 0-0 7.Nd5 c6 8.Nf4 d5 9.c3 Nd7 10.h4 Ne5 11.Qe2 (11.Qg3 Re8=) 11...h6 12.h5 (12.d4!? Nc4 13.Qf3=) 12...g5-/+ 13.Nd3 Bf5 (13...a5 14.ba5 Re8 15.Nf3-/+) 14.Ne5 (14.Nb2!?=+) 14...fe5-/+ 15.Nf3 Bg4 16.e4 de4 (16...f5!? 17.d3-+) 17.Qe4-/+ f5 18.Qc4 Qd5 (18...Kh7!?-/+) 19.Qd5 (19.Ng5 hg5 20.f3 Bf3 21.gf3 Kh7=+) 19...cd5=+ 20.Be2 (20.Ng5 hg5 21.f3 Bh5 22.Rh5 Bf6=+) 20...Bf3 21.gf3 (21.Bf3 e4 22.Bd1 d4-/+) 21...e4 (21...Kf7 22.Rg1-/+) 22.Rg1 d4 23.Bc4 Kh8 24.cd4 Bd4 25.fe4?? (better 25.Rd1-/+) 25...Ba1-+ 26.Ke2 (26.Bd5 Bd4-+) 26...Bg7 (26...Bd4 27.Bd5-+) 27.ef5 (27.f3 Rae8 28.Bd5 Re7-+) 27...Rae8 28.Kd1 Rf5 29.Rg4 (29.Rg2 Ref8-+) 29...Rf4 (better 29...Rf2 30.Bb5 Rc8 31.Bc4-+) 30.Rf4 gf4 31.Bb5 (31.a3 Bd4 32.f3 Re5-+) 31...Re5 (31...Re4 32.a3-+) 32.Bd7 (32.Be2 Re4-+) 32...Rh5 33.Be8 (33.Kc2 a5 34.ba5 Ra5-+) 33...Re5 34.Bf7 f3 35.a3 h5 36.Bc4 (36.d4 Re2 37.Bh5 Rf2-+) 36...h4 37.Bf1 Bh6 38.d4 Rd5 0-1. FelixMart - MisterAhmadi (2055), Casual Blitz game, lichess.org, 2020.

4.Nf3 g6 5.e3 Bg7 6.Bd3 0-0 7.Nc3 Nd7 8.a3 Ne5 9.Ne5 de5 10.0-0 f5 11.Be2 Be6 12.Na4 b6 13.Rb1 Qd7 14.Nc3 c6 15.Qe1 Rad8 16.Nd1 Qd2 17.Qd2 Rd2 18.Bf3 e4 19.Be4 fe4 20.f3 Bd5 21.f4 Rc2 22.Nf2 Bc4 23.Ng4 Bf1 24.Rf1 Rd8 25.Ne5 Be5 26.fe5 Rdd2 27.Rf4 Rg2 28.Kf1 Rh2 29.Kg1 Rcg2 30.Kf1 Ra2 31.Kg1 Rhg2 32.Kf1 Rh2 33.Kg1 Rhb2 34.a4 Rb1 35.Rf1 Rf1 36.Kf1 Ra4 37.Ke2 Rb4 38.Kd2 Kf8 39.Kc3 c5 40.Kd2 Ke7 41.Ke2 Ke6 42.Kd2 Ke5 43.Kc2 h5 44.Kd2 h4 45.Ke2 g5 46.Kf2 g4 47.Kg2 Rb2 48.Kg1 g3 49.Kh1 h3 50.Kg1 Rb1# 0–1. ronnieg (2620) – Morphy (1660), TIO_52 (fics, Fremont, California USA) (1), 2001.

4.b5 b6 5.a4 Bb7 6.c4 Nd7 7.e3 d5 8.Qc2 (8.cd5!? Bd5 9.Nc3+=) 8...dc4= 9.Qc4 Bg7 10.Nc3 Ne5 11.Qh4 Ng6 12.Qg3 f5 13.h4 h5 14.f4 Bc3 15.dc3 Qd5 16.Nf3 Rd8 17.Nd4 c5 18.bc6 Bc6 19.Rg1 (19.Qf3 e5 20.Qd5 Bd5 21.Nf5 Kd7+=) 19...e6 (19...Qa5!? 20.Kd2 a6+=) 20.Bb5= Bb5 21.ab5 Qc4 22.Kd2 Qb5 23.Kc2 Qd7 24.Qf2 Rc8 25.Rgb1 0-0 26.Nb5 Qc6 27.Na7?? Qc3–+ 28.Kd1 Rfd8 29.Ke2 Rd2 30.Kf3 Rf2 31.Kf2 Qc2 32.Kf3 Nh4 33.Kg3 Qg2 34.Kh4 Qg4# 0–1. aleksandras19 – wney, kurnik, 2012.

4.c3 e5 5.e3 Be6 6.Nf3 Nc6 7.Be2 Qd7 8.0-0 Be7 9.d3 Rg8 10.g3 f5 11.Nbd2 f4 12.ef4 ef4 13.Ne4 0-0-0 14.Qd2 fg3 15.fg3 Bh3 16.Rf2 Ne5 17.Ne5 de5 18.Bf1 Bf1 19.Raf1 Qd3 20.Qd3 Rd3 21.Rf7 Bd6 22.Nd6 cd6 23.Rh7 Rc3 24.Rff7 e4 25.Rb7 e3 26.Ra7 Kb8 27.Rhb7 Kc8 28.Ra8 Kb7 29.Rg8 Rc1 30.Kg2 e2 31.Re8 e1Q 32.Re1 Re1 33.h4 d5 34.Kf2 Re8 35.h5 d4 36.h6 d3 37.h7 d2 38.h8Q Rh8 39.Ke2 Rd8 40.Kd1 Kb6 41.g4 Kb5 42.g5 Kb4 43.g6 Ka3 44.g7 Ka2 45.g8Q Rg8 46.Kd2 Rg3 47.Ke2 Kb2 48.Kf2 Rd3 49.Ke2 Kc2 50.Kf2 Kd2 51.Kf1 Re3 52.Kf2 Kd3 53.Kg2 Ke2 54.Kg1 Rf3 55.Kg2 Rf1 56.Kg3 Ke3 57.Kg2 Rf5 58.Kg3 Rg5 59.Kh4 Kf4 60.Kh3 Kf3 61.Kh4 Rg7 62.Kh5 Rg4 63.Kh6 Kf4 64.Kh5 Kf5 65.Kh6 Rg5 66.Kh7 Kf6 67.Kh6 Rc5 68.Kh7 Rh5 69.Kg8 Rg5 70.Kh7 Rg6 71.Kh8 Kf7 72.Kh7 ½–½. joaquimbage – hulk011, kurnik, 2012.

4.c3 Bg7 5.a3 0-0 6.d4 f5 7.e3 e6 8.Bd3 b6 (8...e5 9.Qh5 Qf6 10.Nd2=) 9.Nd2 Bb7 10.Ne2 (10.Ngf3 c5+=) 10...Nd7 11.f3 (11.0-0 c5=) 11...Qg5= 12.0-0?? (better is 12.Kf2=) 12...Qe3–+ 13.Kh1 Qd3 14.Ng3 Qc3 15.Nh5 Bd4 16.Rc1 Qa3 17.Rc7 Bc8 18.Nc4 Qc3 19.Nd6 Qc7 20.Qd4 e5 21.Qd5 Ba6 22.Rd1 Rab8 23.f4 Bb7 24.Qd3 Be4?? 25.Qg3 Kh8 26.Qg7# 1–0. dtpwaldi – rykszarz (1725), kurnik, 2012.

4.Nc3 Nc6 5.Rb1 a6 6.a3 b5 7.e3 Bb7 8.h3 Ne5 9.d4 Ng6 10.d5 (10.a4 ba4 11.Nf3 a3+=) 10...Bg7 11.Nf3 f5 12.Be2?? (better is 12.Nd4=) 12...Bc3–+ 13.Kf1 e5 (13...e6 14.Rb3 Qf6 15.de6 fe6 16.Nd4 Bd4 17.ed4–+) 14.de6? (better is 14.Rb3 e4 15.Rc3 ef3 16.Bf3–+) 14...fe6 15.Bd3 Ne5 16.Ne5 Be5 17.Qh5 Kd7 18.f4 Bf6 19.Qf7 Qe7 20.Qh5 Rag8 21.Qe2 Bg2 22.Qg2 Rg2 23.Kg2 Rg8 24.Kf2 Bh4 25.Kf3 Rg3 26.Ke2 Qg7 27.Rhf1 Qc3 28.a4 Rg2 29.Kf3 Qd2 30.ab5 Rg3# 0–1. aleksandras19 – forfiter57, kurnik, 2012.

4.Nc3 e5 5.e3 f5 6.Bc4 (6.d4 Bg7=) 6...Be6 (6...c6 7.a3=) 7.Be6 fe6 8.Nf3 (8.Qh5 Kd7=) 8...Qf6 9.0-0 (9.Qe2 Nc6 10.b5 Ne7=) 9...Nc6 10.d4 (10.b5 Ne7=) 10...e4=+ 11.Nd2 Rg8 (better 11...Qg5=+) 12.d5?? (12.Qh5 Kd8 13.b5= (worse 13.Qh7 Rh8 14.Nce4 fe4 15.Ne4 Rh7 16.Nf6 Rh6-/+)) 12...Ne7 (better 12...Nb4 13.Qh5 Kd8-+) 13.de6? (13.Qh5 Kd8 14.Ne2 Nd5 15.Rab1-/+) 13...Qe6 (better 13...Qc3 14.Nb3 Rg6-+) 14.Qc1 (14.Nb5!? Qg6 15.g3=+) 14...Qg6-/+ 15.Ne2?? (better 15.g3-/+) 15…Qg2 0-1. alllexiss (1740) - slaughterer (2230), Rated Bullet game, lichess.org, 2014.

4.c4 e6 5.e4 Be7 6.f4 Nd7 7.Qg4 a6 8.Qg7 Rf8 9.Qh7 c5 (9...f5 10.ef5 Bf6 11.fe6 Ba1 12.ed7 Qd7 13.Qd3+=) 10.b5 (10.bc5!? f5 11.ef5+=) 10...ab5 11.cb5 Ra4?? (better is 11...f5 12.ef5 Bf6 13.fe6 Ba1 14.ed7 Qd7–/+) 12.Nc3+/– Ra3 13.Nge2 Nb6 14.Ng3 Qc7 15.Be2 d5 16.0-0 c4 17.ed5 ed5 18.f5 Bd6 19.Rf3 d4 20.Nce4 Rf3 (20...d3!? 21.Nd6 Qd6 22.Re3 Kd8=) 21.Bf3 Bg3 22.Ng3 Nd7 23.Ne4 Ne5? 24.Nf6+- Kd8 25.Qg7 Qe7 26.Nd5 Qd6 27.Be4 Re8? 28.a4 Re7? 29.Ne7 Qe7 30.f6 Qd7 31.Qf8 Qe8 32.Qd6 Nd7 33.Re1 Qe5 34.Qe5 Ne5 35.Bb7! Nd3 36.Re7 Be6 37.Bc6 c3 38.dc3 dc3 39.Re8 Kc7= 40.Re6 fe6 41.f7 c2 42.f8Q c1Q 43.Qf1 Qf1?? 44.Kf1+- Kb6 45.g4 Ne5 46.g5 Ka5 47.Be8 Ka4 48.b6 Ka5 49.b7 1–0. jackw171 – andrzej48, kurnik, 2012.

4.c4 Bg7 5.Nc3 0-0 6.Qb3 f5 7.e3 e6 8.Bd3 b6 9.h4 Bb7 10.f3 Nd7 11.h5 (11.Bc2 Bf6=+) 11...Ne5 12.Bc2 Ba6 (12...Qg5 13.Kf1–/+) 13.d3 (13.h6 Bf6 14.b5 Bb7=) 13...Bh6 (13...Qg5 14.Kf2 f4 15.ef4 Qf4=+) 14.Ke2? (better is 14.b5!? Bb7 15.d4=) 14...Qg5–/+ 15.Nd1? (better is 15.Kf1!? Qe3 16.Re1–/+) 15...Qg2–+ 16.Nf2 Kh8 17.f4 Ng4 18.Ngh3 Bb7 19.Rhg1?? Qf3 20.Ke1 Qe3 21.Kf1 Nf2 22.Nf2–+ Qf4 23.Re1 Bg7 24.Ke2 Bf3 25.Kf1 Bd4 26.Bd1 Bd1 27.Rg2 Bb3 28.ab3 Rg8 (28...Rg8 29.b5 Rg2 30.Kg2 Rg8 31.Ng4 Qg4 32.Kf1 Qf3#) 0–1. dtpwaldi – rykszarz (1710), kurnik, 2012.

4.c4 Bg7 5.Nc3 Nd7 6.h4 f5 7.Qc2 e6 8.e3 a6 9.Be2 b6 10.Bf3 Ra7 11.g4 (better is 11.Bc6!?=) 11...fg4–/+ 12.Bg4 Ne5 13.Be2 Bb7 14.Rh2 Qf6 15.d4 Nc6 16.a3 e5 17.d5 Ne7 18.Ne4 Qg6 19.0-0-0 f5 20.Ng5 Qf6 21.Ne6 e4 22.Nc7 Kd7 23.Ne6 Qa1 24.Kd2+/– Qa3 25.Ng7 Qb4 26.Qc3 Qc5? 27.Ne6 Qc8 28.Rb1 b5 29.cb5?? Qc3–/+ 30.Kc3 Nd5 31.Kd2 Ke6 32.ba6 Ba6–+ 33.Ba6 Ra6 34.Rh1 Rc8 35.Nh3 Ra2 36.Ke1 Rcc2 37.Kf1 Nc3 38.Re1 Re2?? 39.Nf4+- Ke5 40.Ne2 Ne2 41.Re2 Ra1 42.Kg2 Ra8 43.Rb2 Rg8 44.Kf1 Ra8 45.Ke2 d5 46.Rg1 h5 47.Rg5 Rh8 48.Rb7 Rc8 49.Rh5 Rc2 50.Kf1 Rc1 51.Kg2 Rc8 52.Rf7 Kd6 53.Rff5 Kc5 54.Rd5 (54.Rd5 Kb6 55.Rb5 Ka6 56.Rbe5+-) 1–0. swislina – andrzej48, kurnik, 2012.

4.d4 d5 5.e3=.

4.d4 e5 5.e3 Nd7 6.c3 Nb6 7.a4 Bf5 8.a5 Nd7 9.Nd2 Be7? (9...d5 10.a6 Rb8 11.ab7 Rb7 12.Ngf3+=) 10.e4 (better is 10.Qf3!? Bg6 11.Qb7+-) 10...Bg6+= 11.d5 0-0 12.Bd3 Re8 13.Qc2 Bf8 14.Ne2 Bg7 15.Ng3 b6 16.c4 Rb8 17.a6 Rc8 18.b5 Nc5 19.Nb3 Nd3 20.Qd3 Qd7 21.Nd2 h5 22.h4 Bh6 23.0-0-0 Kg7 24.Kc2 Bf4 25.Rh3 Bh6 26.Ndf1 Qg4 27.Ne3 Be3 28.Qe3 c5? 29.dc6 Qe6 30.Qd3 Red8 31.f3 Rc7 32.Kc3 Kh7 33.Nf5 Bf5 34.ef5 Qe7 35.g4 e4? 36.Qe4 Qf8 37.Re1 d5+/– 38.cd5 Qa3= 39.Kd2 Qa2 40.Ke3 Rd5 41.Re2 Qb3 42.Kf2 Re5?? 43.Qc2 Qb5= 44.Re5 Qe5 45.Rh1 Qd4 46.Kg2 hg4 47.Rd1 gf3 48.Kf3 Qh4 49.Rd2 (49.Rd2 Qh1 50.Rg2 Qf1 51.Kg3 Qe1 52.Kf3=). tyop (1790) – daammm (1670), kurnik, 2011.

4.d4 Bg7 5.c3 (5.e3 e5=) 5...Bd7 (5...d5 6.e3=) 6.g3 (6.e3 a5=) 6...Nc6 (6...c6 7.Bg2=) 7.Nd2 (7.Bg2 e5=) 7...e5 8.Ngf3 ed4 (8...f5 9.de5 de5 10.b5=) 9.cd4 f5 10.Rb1 (10.e3 Qe7=) 10...Nd4=+ 11.e3 (11.Nd4 Bd4 12.Bg2 Rb8=+) 11...Nb5 (11...Nf3 12.Nf3 Bc3 13.Nd2–/+) 12.Bb5 (12.Rc1 f4=+) 12...Bb5–/+ 13.a4 (13.Rc1 Bd3–/+) 13...Bc6 (13...Bd3 14.Rb3 Be4 15.b5–/+) 14.b5 (14.Qc2 Qd7 15.b5 Bd5=+) 14...Bd5 (14...Be4 15.Rc1–/+) 15.Qc2=+ Qd7 16.0-0 0-0 (16...Rg8 17.Rfc1 Rc8 18.Nd4=+) 17.Rfc1 (17.Qd3 Be6=+) 17...Rac8 18.Nh4 (better is 18.Qd3 Be6 19.a5=+) 18...Be4 (better is 18...Be6!?=+) 19.Ne4+= fe4 20.Qe4 d5 21.Qf3 c6 22.Nf5 Rc7 23.Ng7 Kg7+= 24.bc6 bc6 25.Rc5 Qd6 26.Qg4 Kh8 27.Qd4 f6 28.a5 h6 29.a6 Rff7 30.Rb8 Rf8+= 31.Rb7 Rb7 32.ab7 Qc7 33.Qb2 h5 34.Rc1 Kg7+/– 35.Qb5! Rb8 36.Rc6 Qb7 37.Qd5 Rc8 38.Rc5 Qd5 39.Rd5 Ra8 40.Ra5 Kg6 41.Ra6 Kf5 42.Kg2 Ke5 43.Kf3 Kf5 44.e4 Kg5 45.h4 Kg6 46.Kf4 Kg7 47.Kf5 1–0. mic (2150) – kenc (1975), net–chess.com, 2006.

4.e4 Bg7 5.d4 Bd7 6.Bc4 e6 7.Nc3 Qe7 8.Nge2 a6 9.a3 e5 10.Nd5 Qd8 11.Ng3 c6 12.Ne3 Qe7 13.Nef5 Bf5 14.Nf5 Qf8 15.de5 b5 16.Nd6 1–0. mtrc – IMTHELIZARDKING, internet, 2002.

4.g3 Bd7 5.d4 Bc6 6.d5 Bb5 (6...Bd7 7.Nf3=) 7.Bg2 e6? (7...Bg7 8.Nf3=) 8.Nf3 (8.de6!? c6 9.ef7 Kf7 10.Na3+/–) 8...Bc4 (better is 8...Bd7=) 9.Na3 (better is 9.de6 fe6 10.Nd4+=) 9...Bd5–/+ 10.c4 Bc6 11.b5 Bd7 12.0-0 c6 13.Nd4 e5 14.bc6 Nc6 15.Nc6 Bc6 16.Bc6 bc6 17.Nc2 Qd7 18.Ne3 Bh6 19.Ng2 Ke7 20.f4 Rab8 21.Rb1 Rb7 22.Qd3 Bg7 23.Rb7+= Qb7 24.Rb1 Qc7= 25.fe5 fe5=+ 26.Qf5 h6 27.Rf1 Ke8 28.e4 a5 29.a4 Rg8?? 30.Ne3?? Qd7?? 31.Qf3?? f6 32.Rb1 Kf7?? 33.Qh5+- Ke7 34.Nf5 Ke6 35.Qg4 Kf7 36.Qh5 Ke6 37.Qg4 Kf7 38.Nh6 ½–½. Salvatore – Skean Du, ChessWorld.net, 2006.

4.Bg2 e5 5.a3 g6 6.Nf3 Bg7 7.0-0 0-0 8.c4 h6 9.d3 a5 10.b5 Nc5 11.a4 e4 12.de4 Nce4 13.Nd4 Be6 14.Ne6 fe6 15.Qc2 d5 16.cd5 ed5 17.Rd1 Qd7 18.Be4 Ne4 19.Bg7 Qg7=+ 20.Nd2 Rad8?? 21.Ne4+/– de4 22.Rd8 Rd8 23.Rf1 Qe5 24.Qc4 Kg7 25.e3 b6 26.Rc1 Rd7 27.Qc6 Qd6? 28.Qd6 cd6+= 29.Rc6 d5 30.Rb6 d4 31.ed4 Rd4 32.Ra6 Ra4 33.b6 Rb4 34.Ra5 Rb6 35.Re5 Rb4 36.Kg2 Kf6 37.Re8 Kf7 38.Rb8?? Rb8–+ 39.h4 Kf6 40.g4 Ke5 41.Kg3 Rb3 42.Kg2 Kf4 43.g5 hg5 44.hg5 Kg5 45.Kf1–+ Kf4 46.Ke2 g5 47.Kf1 Kf3 48.Kg1 Rb2 49.Kf1 Rb1# 0–1. rryy44 – gracjan001, kurnik, 2011.

4.Bg2 g6 5.c4 Bg7 6.f4 0-0 7.Nf3 e5 8.fe5 Ng4 9.Qc2 Nde5 10.Ne5 Ne5 11.0-0 c6 12.e4 Be6=+ 13.Na3 Qb6 14.d4 Nc4 15.Nc4+/– Bd4 16.Kh1 Bc4 17.Bd4 Qd4 18.Rfd1 Bd3 19.Rd3?? Qa1–+ 20.Rd1 Qe5 21.a4 a5 22.Qb3 ab4 23.Qb4 Ra7 24.Bf3 Rfa8 25.Kg2 Ra4 26.Qb7 Ra2 27.Kh3 Qe6 28.g4 Qe5 29.Bg2 R2a3 (29...R2a3 30.Rd3 Rd3 31.Bf3 Rf3 32.Kg2 Ra2 33.Kf3 Qc3 34.Kf4 Qd2 35.Kg3 Qh2 36.Kf3 Qf2#; 29...R8a3 30.Qb3 Rb3 31.Rd3 Rd3 32.Kh4 Qf6 33.g5 Qf4#) 0–1. Grabmeier,Johannes (1965) – Spiesberger,Gerhard (1960), Niederbayernliga, 2007.

4.Bg2 g6 5.d3 Bg7 6.Nd2 0-0 7.Ngf3 e5 8.0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0 e5 7.d3 Nbd7 8.Nbd2).

4.Bg2 g6 5.Nf3 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0 Nbd7).

4.Bg2 g6 5.Nf3 Bg7 6.0-0 e5 7.a4 0-0 8.c4 b6 9.Ne5+/– Rb8? 10.Nc6+- (10.Nc6 Qe8 11.Nb8 Nb8 12.Nc3+-) 1–0. rryy44 – kpax75, kurnik, 2012.

4.Bg2 e5 5.a4 Bg7 6.c4 0-0 7.Nc3 Be6 (7...c6 8.b5=+) 8.d3 (better is 8.Bb7 Nbd7 9.Ba8 Qa8 10.Nf3+/–) 8...Qd7?? (8...c6 9.b5=+) 9.Qc2?? (better is 9.Bb7 Na6 10.b5+- (10.Ba6?! Qc6 11.e4 Qa6+=)) 9...a6 (9...Nc6 10.b5 Nb4 11.Qd2=+) 10.Rc1 (better is 10.Bb7!? Ra7 11.Bg2=) 10...Nc6 11.b5 Nd4 12.Qb1 (12.Qd1!? ab5 13.ab5=+) 12...ab5 13.ab5 c5 (13...c6 14.e3 Nb3 15.Rd1–/+) 14.Nf3 (14.e3 Nf5=) 14...Nf3 15.ef3 Bh3 16.0-0 Bg2 17.Kg2 h5 18.Rce1 Kh7 19.Ne4 Ne4 20.fe4 b6 21.h4 Bh6 22.Qc2 f5 23.Ra1 Ra1 24.Ra1 f4 25.gf4 (better is 25.Qa4 Qg4 26.Qd1 f3 27.Kh2=+) 25...Qg4 26.Kf1 Bf4 27.Ra7 Kh6 28.Bc1 Qh4 29.Bf4 Qf4 30.Rd7 Rf6 31.Rd8 h4 32.Qe2 h3?? 33.Rh8= Kg7 34.Rh3 Qc1 35.Kg2 Qg5 36.Rg3 Qh5?? 37.Qg4 Qh6 38.Qd7 Rf7 39.Qd6 Qh5?? 40.Qb6+- Rf6 41.Qc7 Rf7 42.Qc5 Qe2 43.Qe5 Kf8 44.Qh8 Ke7 45.Qh4 Ke8 46.Kh3 Qf2= 47.Qh8 Ke7?? 48.Qe5+- Kf8 49.Qb8 Kg7 50.Qe5?? Qf6?? 51.Qf6+- Rf6 52.Kg4 Rf7 53.Re3 Rc7 54.e5 Rd7 55.Kg5 Re7 56.e6 Rc7 57.d4 Rc4 58.e7 Rd4 59.e8Q Rd5 60.Kg4 Rd4 61.Kg3 (61...Rf4 62.Re7 Rf7 63.Qf7 Kh6 64.Qf6 Kh5 65.Rh7) 1–0. GoodKopBadKop – Sir, Live Game Caissa's Web, 2004.

5.c4 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.g3 d6 6.Bg2) .

5.c4 Bf5?? 6.Bb7+- Nbd7 7.Ba8 Qa8 8.f3 0-0 9.Nc3 Nb6 10.d3 Nfd7 11.Qd2 a5 12.a3 a4 13.Rb1 Ne5 14.Ne4?? Nbc4 15.Qc3?? Nb2 16.Qc7? Rc8 (16...Rc8 17.Qe7 Be4 18.fe4 Qa6–+) 0–1. algernon (2545) – gbsrao (2385), net–chess.com, 2011.

5.d4 c6 6.Nd2 (6.Nf3 a5=) 6...d5 (6...0-0 7.c4=) 7.Ngf3= b5 (7...0-0 8.c4=) 8.0-0 (8.a4 0-0=) 8...0-0 (8...a5 9.ba5 Qa5 10.Nb3=) 9.Re1 (9.a4 a5=) 9...Nbd7 (9...Qd6 10.a4=) 10.a4 Bb7 (10...Nb6 11.ab5 cb5 12.Ra5=) 11.ab5 (11.a5 a6=) 11...cb5= 12.Nb3 (12.Ra5 Qb6=) 12...Ne4 (better is 12...Qc7=) 13.Nc5 (better is 13.Qd3+=) 13...Nec5 14.bc5 a5 (14...Nc5 15.Ne5 Qc7 16.dc5 Be5 17.Be5 Qe5 18.Qb1–/+) 15.Bc1 (15.Qd3 Bc6=) 15...Bc6 (better is 15...Nc5!? 16.c3 Ne4–/+) 16.c3 (16.Bf4 a4=) 16...e5 (16...Re8 17.Ra3=) 17.e3 (17.de5 Ne5 (worse is 17...Nc5 18.Ba3 b4 19.cb4+/–; 17...Be5?! 18.Bg5 Qc7 19.Nd4=) 18.Nd4 Qd7=) 17...e4 (17...Qe7 18.Nd2+=) 18.Nd2 f5 19.Rf1 Nf6 20.f3 a4 (20...ef3 21.Qf3 a4 22.Ba3+=) 21.fe4 (21.Ra3 ef3 22.Qf3 Qe7+=) 21...fe4–/+ 22.Bh3 (22.Ba3 Qd7–/+) 22...Qe7 (22...Bd7 23.Bd7 Qd7 24.Qe2–/+) 23.Rf2 (23.Ba3 Rf7–/+) 23...Nh5 (23...Bd7 24.Qf1–/+) 24.Qf1 (24.Rf8 Rf8 25.Qe2 Nf6+=) 24...Rf2 (24...Bd7 25.Bd7 Qd7 26.Rf8 Rf8 27.Qe2–/+) 25.Qf2 Rf8 (25...Bd7 26.Bf1+=) 26.Qg2 (26.Qe2 Nf6+=) 26...Bh6–/+ 27.g4?? (better is 27.Nb1–/+) 27...Be3–+ 28.Kh1 Nf4 (28...Rf2 29.Qg1 Re2 30.Qf1–+) 29.Qg3 Nh3 (better is 29...Bd2!? 30.Bd2 e3 A) 31.Be3?? Qe4 32.Bg2 Ng2 (32...Qg2?! 33.Qg2 Ng2 34.Kg2=) 33.Qg2 Qe3–+; B) 31.Qe3 Qe3 32.Be3 Nh3 33.Kg2–+) 30.Qh3 Rf2?? (better is 30...Bf2 31.Qg2 b4–+) 31.Qe3+- Qh4 (better is 31...Rf7+-) 32.Qg3?? (32.h3 Rf8+/–) 32...Qf6?? (better is 32...Qg3 33.hg3 e3–+) 33.Qb8?? (better is 33.Kg1 Rf4 34.g5+-) 33...Kg7 34.Qc7 Kf8 35.Qg3 Qf7?? (better is 35...Kg8=) 36.Kg1+- Rf6 37.g5 Re6 (37...Rf4 38.Ba3+-) 38.Bb2 (38.Nf1 Kg8+-) 38...Kg7 39.Rf1 Qe7 40.Bc1 h6 (better is 40...Qd7+-) 41.gh6 Kh7 42.Rf4 e3 (42...Qc7 43.Qf2 Be8 44.Nf1+-) 43.Nf3 Rf6 (43...e2 44.Bd2 Kg8+-) 44.Rf6 (44.Ng5 Kg8 45.Rf6 Be8 46.Re6 Qe6 47.h7 Kg7 48.Ne6 Kf7 49.Ng5 Kf8 50.h8Q Ke7 51.Qd6) 44...Qf6 45.Be3 (45.Qc7 Kh6 46.Be3 g5 47.Bg5 Qg5 48.Ng5 Kg5 49.Qc6 a3 50.Qd5 Kf6 51.Qc6 Kg5 52.Qb5 a2+-) 45...Qe7 46.Ne5 (better is 46.Ng5 Kh6 47.Bf4+-) 46...Be8 47.c6 (47.Qg4 Qf6+-) 47...a3 48.Bf4 (better is 48.Qf2+-) 48...a2 49.Qe1 Qf6?? (49...Qa3 50.Qa1 b4+-) 50.c7 Qa6 (50...Qf5 51.Nf3 a1Q 52.Qa1+-) 51.Qa1 Kg8 (51...g5 52.Bg5 Bg6 53.Nd7+-) 52.c8Q! Qc8 (52...Qc8 53.Qa2 Deflection) 53.Qa2 Qe6 (53...Qb7 54.Ng4 Bd7 55.Nf6 Kf7 56.Ne4+-) 54.Qa7 Qf6 (54...Bf7+-) 55.Qg7! Qg7 56.hg7 Kg7 57.Kf2 Kf6 (57...Bf7 58.h4+- (worse is 58.Nf7 Kf7 59.Kf3 Kf8+-)) 58.Kg3 (58.h4 Bf7+-) 58...g5 59.Bc1 Kf5 (59...Bh5 60.Nf3+-) 60.h3 (60.Nf3!? Ke4 61.Ba3 Kf5+-) 60...Bh5 61.h4 (61.Bd2 Bd1+-) 61...gh4 62.Kh4 Be8 (62...Be2 63.Ba3+-) 63.Kg3 (63.Ba3 Bg6+-) 63...Ke4 64.Kf2 (64.Ba3 Bh5+-) 64...Bh5 (64...b4 65.cb4 Kd4 66.Bb2 Ke4+-) 65.Kg3 Be8 66.Kg4 (66.Ba3 Bh5+-) 66...b4 67.Bb2 (67.cb4 Kd4 68.Bb2 Ke4+-) 67...bc3 (67...b3 68.Kg5 Ke3 69.c4 dc4 70.d5+-) 68.Bc3 Bb5 ½–½. workchess – ctrotter, net–chess.com, 2017.

5.d4 d5 6.Nf3+=.

5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6).

5.Nf3 Nbd7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d6 6.0-0 Nbd7).

5.g4 0-0 6.g5 Nd5 7.Bg7 Kg7=+.

5.g4 0-0 6.g5 Ne4?? 7.Bg7+- Kg7 8.d3 Nf2 9.Kf2 e5 10.e4 f5 11.gf6! Rf6 (11...Qf6 12.Nc3 Combination; 11...Rf6 12.Kg2 Combination; 11...Kf6 12.Kg1 Combination) 12.Bg2 Nc6 13.c3 Be6 14.a4 a6 15.Nbd2 Qe7 16.Nc4 (16.Ke1 Raf8+-) 16...Raf8 17.Kg1 (17.Ne3+/-) 17...d5? (17...Bc4 18.dc4 Qf7+=) 18.Na5?? (18.Nce5 Ne5 19.Ne5 d4+-) 18...Nd8?? (better 18...Na5 19.ba5 Qc5 20.d4 Qc3-/+) 19.Ne5+- de4 20.de4 b6 21.Nac6 Nc6 22.Nc6 Qe8 23.b5 ab5 24.ab5 Bc4 25.Ra7 R8f7 26.Qa4 (26.e5!? Rf4 27.Qd8 Qd8 28.Nd8 Rd7+-) 26...Qf8?? (26...Bb5 27.Qb5 Rc6+-) 27.Qc4 1-0. beatmeeasy (2005) - miniweps (2005), lichess.org, 2020.

5.g4 0-0 6.g5 Nh5 7.Bg7 Kg7 8.Rg1 e5 9.h4 (9.d4 e4 10.Nfd2 d5=) 9...Nc6 10.c3 Bg4?? (better 10...e4 11.Nd4 Ne5=+) 11.Rg4+- e4 (11...Qd7 12.Rg1 e4+-) 12.Re4 Qd7 13.b5 Ne5 (13...Ne7 14.Qa4+-) 14.Ne5 de5 15.Re5 Qg4 (15...f6 16.gf6 Nf6 17.d4+-) 16.Re7 (16.e3 Qh4 17.Qf3 Rab8+-) 16...Nf4 (16...Ng3 17.e4 Qh4+-) 17.Rc7 (better 17.e3 Ng2 18.Bg2 Qg2+-) 17...Qg1?? (better 17...Nd3 18.ed3 Rfe8 19.Qe2 Re2 20.Be2 Re8=) 18.d3 Rfd8 19.Kd2 (better 19.Rb7 Re8 20.Kd2+-) 19...Qg4?? (19...Qf2 20.Qb3 Nd5 21.Rb7 Qf4 22.Ke1 Qh4 23.Kd1 Ne3 24.Kc1 Qe1 25.Kb2 Qf1+/-) 20.e3 Qh4 (20...Qg1 21.Qf3 Qf1 22.ef4 Re8+-) 21.ef4 (better 21.Qf3 Qg5 22.Qf4 Qf4 23.ef4+-) 21...Qf4 (21...Qf2 22.Qe2 Qf4 23.Qe3 Qc7 24.Bg2+/-) 22.Kc2 Qc7 23.Qg4 Rac8 24.a4 Qh2 (24...Qe7 25.Qg3+-) 25.Qf3 Qe5 26.Qf6! Qf6 27.gf6 Kf6 28.Nd2 Rc5?? (better 28...Rc7+-) 29.Ne4 Kg7 30.Nc5 Rd5 (30...b6 31.Nb7 Rd5 32.Bg2+-) 31.Nb7 Rf5 32.c4 Rf2 33.Kc3 h5 (33...Rf6 34.c5 Re6 35.Nd6+-) 34.Bh3 (better 34.c5 h4 35.c6 Rf3+-) 34...g5 35.c5 g4 (35...Re2 36.c6 Re8 37.c7+-) 36.Bg4! hg4 37.Rg1 (37.c6 a6+-) 37...f5 (37...Re2+-) 38.c6 Kf6 39.c7 f4 40.Rg4 Kf5 41.Rg8 (41.c8Q Kf6 42.Qf8 Ke6 43.Nc5 Kd5 44.Rg5) 41...f3 (41...Rh2 42.c8Q Kf6 43.Qf8 Ke6 44.Nc5 Kd5 45.Rg5) 42.c8Q Kf4 (42...Kf6 43.Qf8 Ke6 44.Nc5 Kd5 45.Rg5) 43.Qg4 (43.Kd4 Re2 44.Qg4) 43...Ke3 (43...Ke5 44.Qg5 Ke6 45.Re8 Kd7 46.Qe7) 44.Qd4 (44.Qe4) 44...Ke2 45.Re8 (45.Rg1 Rf1 46.Qe5 Kf2 47.Qh2 Ke1 48.Qd2) 45...Kf1 46.Qh4 (46.Qe3 Rc2 47.Kc2 a6 48.Qf3 Kg1 49.Qg3 Kf1 50.Re1) 46...Kg1 (46...Re2 47.Qh1 Kf2 48.Rg8 Rc2 49.Kc2 Ke2 50.Qd1 Ke3 51.Qe1 Kd4 52.Qe4) 47.Re1 (47.Rg8 Rg2 48.Qe1 Kh2 49.Rh8) 47...Kg2 48.Qh1 (48.Rh1 Rc2 49.Kc2 f2 50.Qh3) 48...Kg3 49.Rg1 (49.Re6 Rh2 50.Rg6 Kf4 51.Qh2 Kf5 52.Qh5 Kf4 53.Qg5) 49...Kf4 50.Kd4 (50.Qh6 Kf5 51.Qf8 Ke6 52.Nc5 Kd5 53.Rg5) 50...Re2 (50...Rg2 51.Qh6 Kg4 52.Rh1 Rh2 53.Rh2 f2 54.Ke4 f1Q 55.Qg6) 51.Qh4 (51.Qh6 Kf5 52.Nd6) 51...Kf5 52.Rg5 (52.Qh7 Kf6 53.Rg6 Kf5 54.Qf7) 52...Kf6 (52...Ke6 53.Rg6 Kf7 54.Qh7 Ke8 55.Rg8) 53.Qh6 Kf7 (53...Ke7 54.Rg7 Ke8 55.Qh8) 54.Rg7 (54.Rg7 Ke8 55.Qh8) 1-0. beatmeeasy (1985) - MSami70 (1990), lichess.org, 2020.

5.g4 e5=+.

5.g4 h5?? 6.g5+- 0-0 7.gf6 ef6 8.Rg1 f5 9.Bg7 Kg7 10.e3 b6 (10...h4 11.Bg2+-) 11.Nd4 Bb7 (11...a5 12.Qf3 Ra7 13.Nb5+-) 12.Qh5 Rh8 (12...Be4 13.Nf5 Bf5 14.Qf5+-) 13.Nf5 (better 13.Ne6 Kf6 14.Nd8 Rh5 15.Nb7+-) 13...Kg8 (13...Kf6 14.Qg5 Ke6 15.Bc4 Kd7+-) 14.Rg6! fg6 15.Qg6 Kf8 16.Qg7 Ke8 17.Qh8 Kd7 18.Qg7 Kc6 19.d4 (19.Nd4 Kd5 20.Nc3) 19...d5 (19...b5 20.c4 a6+-) 20.b5 1-0. beatmeeasy (1965) - MimicheBLR (1975), lichess.org, 2021.

5.g4 h5?? 6.g5 b6 7.gf6 ef6 8.Bg2 Bb7 9.d3 Nc6 (9...0-0 10.Rg1+-) 10.a3 (10.Nd4!? Qd7 11.b5 Na5 12.Bb7 Nb7+-) 10...Qd7 11.e4 (11.Nc3 f5+-) 11...0-0-0 12.h4 d5?? (12...Kb8+-) 13.Bh3 f5 14.Bg7 Rhe8 (14...de4 15.Bh8 ef3 16.Bb2+-) 15.e5 Ne5 16.Ne5 f6 17.Bf6 (17.Bf6 Qd6 18.d4 Qf6 19.Qe2+-) 1-0. beatmeeasy (1850) - Anton_i_o (1805), lichess.org, 2020.

5.g4 h5?? 6.g5+- Nbd7 7.gf6 Nf6 8.Rg1+-.

3.a3 e6 4.d3 Nf2 5.Kf2 c5 6.Nf3 cb4 7.ab4 Bb4 8.c3 (better 8.Bg7!? Rg8 9.Bc3+-) 8...Be7+/- 9.d4 Nc6 10.e3 0-0 11.Bd3 Qc7 12.Qc2 g6 13.Rf1 d5 14.Kg1 f5 15.Nbd2 Bd7 16.Ba3 Be8 (16...Ba3 17.Ra3 e5 18.Qb3+-) 17.Be7 Qe7 18.c4 Rc8 19.c5 (19.Qb2 Qb4 20.Qc1 b6+-) 19...Bf7 (19...e5 20.Qb3+-) 20.Qb3 (20.Bb5 b6 21.Qa4 Nb8+-) 20...e5 21.Bb5 ed4 22.ed4 a6 23.Bc6 bc6 (23...Rc6 24.Rfe1 Re6 A) 25.Qd5? Re1 26.Re1 Qe1 (26...Bd5? 27.Re7 Rf7 28.Re1+-) 27.Ne1 Bd5-+; B) 25.Ne5+-) 24.Ra6 Rb8 25.Rb6 Ra8 (25...Rb6 26.Qb6 Qe3 27.Kh1+-) 26.Rb7 (26.Rc6 Rfb8 27.Qc3 Ra2+-) 26...Qe2 27.Re1 Qa6 28.Ree7 Rae8 (28...Qa1 29.Nb1+-) 29.Re8 (better 29.Ra7!? Qb5 30.Qb5 cb5+-) 29...Be8 30.Rb6 Qe2 31.Qb1 Bd7 32.Qf1 f4 (32...Qe6+-) 33.Qe2 Rf5 34.Qe7 (34.Ng5 Rf8 35.Qe7 Rf6 36.Rb8 Bc8 37.Rc8 Rf8 38.Rf8) 34...Rg5 (34...Bc8 35.Ng5 Rg5 36.Rb8 Rg2 37.Kg2 f3 38.Kf3 h6 39.Rc8) 35.Qd7 (35.Qd7 Rf5 36.Rb7 Rf7 37.Qf7 Kh8 38.Qh7; 35.Rb8 Bc8 36.Rc8) 1-0. Gehaktbalmetjus (2120) - J1mbo (1765), Rated Bullet game, lichess.org, 2019.

3.a3 Nf2 4.Kf2 e6 5.Nf3 Be7 6.g3 (better 6.Bg7!? Rg8 7.Bc3 d6+-) 6...Bf6 7.Bg2?? (better 7.Bf6 Qf6 8.Nc3+-) 7...Bb2-/+ 8.Rf1?? (better 8.Ra2 Bf6 9.e4-/+) 8...Ba1-+ 9.Nc3 Bc3 10.dc3 Qf6 11.Qd4 Qd4 (11...Qg6!? 12.Nh4 Qh6 13.c4-+) 12.cd4 Nc6 13.e4 d6 14.b5 Ne7 15.Nd2 Bd7 16.c4 0-0-0 (16...a6 17.a4-+) 17.a4 f5 (better 17...e5 18.Ke2 Rhf8 19.d5-+) 18.e5 (18.Re1 e5-+) 18...de5 19.de5 (19.Nb3 ed4 20.Re1 Ng6-+) 19...Ng6 (19...Bb5 20.Ke3 Ba4 21.Ra1-+) 20.Re1 (20.Nf3 f4-+) 20...Bb5! 21.Nf3 (21.ab5 Rd2 Discovered attack; 21.cb5 Rd2 Discovered attack) 21...Bc6 (better 21...Bc4 22.h4-+) 22.Ng5 (22.h4 Ba4 23.h5 Ne7-+) 22...Ne5! 23.Ne6 (23.Re5 Rd2 Double attack) 23...Rde8 (better 23...Nd3 24.Kg1 Ne1 25.Bc6 Rd2-+) 24.Ng7 (24.Re5 Bg2 25.Kg2-+) 24...Ref8 (better 24...Nd3 25.Kg1 Re1 26.Bf1 f4 27.g4 Rd8 28.h3 Ne5 29.Nf5 Nf3 30.Kh1 Rf1 31.Kg2 Rg1 32.Kf2 Rd2) 25.Nh5?? (25.Re5 Bd7 26.Bd5-+) 25...Nd3 26.Ke2 Ne1 27.Ke1 (27.Bc6 bc6 28.Ke1-+) 27...Bg2 28.Kf2 Bh3 (28...Bc6!? 29.h3-+) 29.Nf4 Bg4 30.Ne6 Re8 31.Ng5 Re2 (31...Re2 32.Kf1 Rd8 33.Nf3 Bf3 34.a5 Rd1) 0-1. Gehaktbalmetjus (2125) - palang1359 (2125), Rated Bullet game, lichess.org, 2019.

3.c4 d5 4.Nc3 Bg4? (better is 4...e6 5.cd5 ed5 6.Qa4 Bd7=) 5.cd5+- Na6?? (better is 5...Nf6 6.h3 Bf5+-) 6.Ne4 Qd5 7.Ng3 Nb4 (7...h5 8.h3 Bd7+-) 8.Qa4 Bd7 9.Qb4 e6 10.e4 (better is 10.Qc3!? h5 11.h4 Qc6+-) 10...Bb4 11.ed5 ed5 12.Bg7 Rg8 13.Bb2 a5 14.Bd3 h6 15.Nf3 Rg4 16.h3 a4 (16...Rg8+-) 17.hg4 Bg4 18.Rh4 h5 19.Nh5 Be6 20.Rb4 Bg4 21.Rg4 a3 22.Rg8 Ke7 (22...Kd7 23.Bf5 Ke7 24.Bf6 Kd6 25.Be5 Kc5 26.Ra8 d4 27.Bd4 Kd5 28.Nf6 Kd6 29.Ne4 Kd5 30.Rc1 c5 31.Rc5) 23.Bf6 Ke6 (23...Kd6 24.Ra8 b6 25.Bb5 Ke6 26.Re8 Kd6 27.Be7 Ke6 28.Ng7) 24.Ra8 c5 (24...Kd7 25.Rd8 Kc6 26.Rc1 Kb6 27.Bd4 c5 28.Rc5 f5 29.Nf4 Ka7 30.Rc7) 25.Rd8 d4 (25...c4 26.Nd4) 26.Ng5 1–0. _chess_ (1735) – lady, gameknot.com, 2011.

3.c4 Nd6 4.e3+= e6 (4...b6 5.d4+=) 5.Qc2 (5.Nf3 a5 6.b5 b6+=) 5...Nc6 (5...Nf5 6.a3+=) 6.a3 (6.b5 Ne7+=) 6...Nf5 (6...b6 7.Nf3+=) 7.Nf3 Be7? (better is 7...Nh4+=) 8.Bg7?? (better is 8.b5 Na5 9.g4 Ne3 10.de3+-) 8...Ng7–+ 9.b5 (9.d4 f5–+) 9...Nb8 10.Nc3 (10.d4 a6–+) 10...Bf6 (10...a6 11.ba6 b6 12.d4–+) 11.Be2 (11.d4 a6–+) 11...d6 (11...c5 12.0-0–+) 12.0-0 Nd7 13.d4 b6 (13...e5 14.Ne4–+) 14.Qe4 (14.Bd3 Bb7–/+) 14...Rb8–+ 15.Nd5 (15.Qc2 Bb7–+) 15...Bb7 16.Nf6 Nf6 (16...Qf6 17.Qd3–+) 17.Qh4 (17.Qf4 a6–+) 17...Nf5 (17...c5 18.Qf4–+) 18.Qh3 Rg8 (18...c5 19.d5–+) 19.d5 (19.Bd3 Bf3 20.Qf3 Nh4 21.Qc6 Qd7 22.Qd7 Kd7–+) 19...Qe7 20.Bd3 Ng7 21.e4 ed5 (better is 21...Ngh5 22.Ne1 a6 23.ba6 Ba6–+) 22.ed5+= Kf8 (22...Bc8 23.Qh4 Qd8 24.Rfe1 Kf8 25.Nd4+= (25.Bh7 Rh8–+)) 23.Rfe1= (23.Bh7? Bc8 24.Qh4 Rh8–+) 23...Qd7 (23...Qd8 24.Qh6= (24.Bh7 Rh8–+)) 24.Qh4 (better is 24.Qh6 Qd8 25.Ng5= (25.Bh7 Rh8 26.Ng5 Bc8–+)) 24...Nfe8?? (better is 24...Ngh5 25.Ng5 Qg4 26.Qg4 Ng4 27.Nh7 Kg7+=) 25.Ng5+- Nf5? (better is 25...f6 26.Re8 Ke8 27.Qh7 Rf8 28.Re1 Kd8 29.Qg7 Qg7 30.Ne6 Ke8 31.Ng7 Kf7+-) 26.Nh7 Kg7 27.Qf4 (better is 27.Qg4 Kh8 28.Qh3 Rg2 29.Kg2 Ne3 30.Re3 Qh3 31.Rh3+-) 27...Kh7?? (27...Bc8 28.Ng5 Nh6+/–) 28.Bf5+- (28.Qf5?! Qf5 29.Bf5 Kg7=) 28...Qf5 29.Qf5 (29.Qf5 Rg6 30.Qf7 Ng7 31.Qc7+-) 1–0. GuestFSNV – GuestKZNB, freechess.org, 2016.

3.d3 Nd6 4.e3 c6 5.Nf3 Nf5 6.e4 Nh6 7.Be2 d6 8.Nc3 e5 9.d4 Nd7 10.0-0 Be7 11.h3 0-0 12.Qd2 ed4 13.Nd4 Ne5 14.f4 Bf6? (better is 14...Ng6+=) 15.fe5+- Be5 (15...Bg5 16.Qd3 de5 17.Nf3 Qb6 18.Kh2+-) 16.Rad1 Qh4 (16...Re8 17.Qd3+-) 17.Nf3 Qg3 18.Ne5 de5 19.Rf3 Qg6 20.Qe3 Ng4 (20...b6+-) 21.hg4 Bg4 22.Rg3 Qh5 (22...h5+-) 23.Rg4 g6 24.Rd7 Rae8 (24...b6 25.Qg3 Qh6 26.Qe5+-) 25.Qf2 Re6 26.Bc1 Kg7 27.Rh4 Qh4 28.Qh4 h5 29.Bc4 Rf6 30.Bg5 Rf4 31.Bf4 ef4 (31...c5 32.Be5 Kh6 33.Qf4 Kh7 34.Rf7 Rf7 35.Qf7 Kh6 36.Qf8 Kg5 37.Qf4) 32.Qf4 h4 (32...Rg8 33.Rf7 Kh8 34.Qh6) 33.Bf7 h3 (33...c5 34.Bd5 Rf7 35.Rf7 Kh8 36.Qb8) 34.Bc4 Kh8 (34...Rf7 35.Rf7 Kh8 36.Qb8) 35.Qf8 1–0. Kortis – Belle, internet, 2016.

3.d3 Nf6=.

3.e3 a5!? 4.b5 d6+=.

3.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Ne4).

3.e3 Nd6 4.Nf3+- Nf5 (4...a6 5.Bd3+-) 5.Be2 (5.e4 Nd6 6.Bd3 e6+-) 5...Nh6 (better 5...e6!? 6.a3 a5+=) 6.0-0+- Ng8 7.c4 Nf6 8.b5 (8.Nc3 d6+-) 8...Ne4 (8...d6!?+-) 9.Qc2 Nd6?? (9...Nf6+-) 10.c5 Nb5 11.Bb5 a6 12.Be2 Nc6 13.d4 Nb4 (13...d5 14.cd6! Qd6 15.Nbd2+-) 14.Qb3 Nc6 (14...a5 15.a3 Na6 16.Nbd2+-) 15.d5 Na5 (15...Nb8 16.Na3+-) 16.Qa4 b6 (16...c6 17.Bc3 b5 18.cb6+-) 17.Ne5 Nb7 (17...g6 18.Nf7! Kf7 19.Qf4 Ke8 20.cb6 c6 21.Bh8 cd5+-) 18.Nf7! Nc5 (18...Kf7 19.Qf4 Combination) 19.Qf4 (19.Nd8?! Na4 20.Bd4 Kd8=) 19...d6 20.Bh5 g6 21.Nd8 Nd7 22.Ne6 Nf6 23.Nc7 (better 23.Bf6 ef6 24.Qf6 Ra7 25.Qh8 Be6 26.de6 c5+-) 23...Kd7 24.Na8 Kd8 25.Bf6 Bf5 (25...Rg8 26.Bd4 Ke8 27.Rc1 Bb7 28.Nc7 Kd7 29.Qf7 Bc6 30.Qe8 Kc7 31.Rc6 Kb7 32.Qc8 Ka7 33.Bb6) 26.Bh8 Kd7 (26...e5 27.de6 Ke7 28.e4 Ke6 29.ef5 Kd7 30.fg6 Be7 31.g7 Kc8 32.Rc1 Kb8 33.Qf8 Bf8 34.gf8Q Ka7 35.Rc7) 27.Nb6 (27.Nb6 Kc7 28.Rc1 Bc2 29.Qc4 Kb6 30.Qc6 Ka7 31.Bd4 Kb8 32.Rc2 gh5 33.Rb2) 1–0. GuestRHGZ – moloo, freechess.org, 2019.

3.e3 e5 4.Be5 Qg5 (better 4...Nc6!? 5.Bb2 Nb4=) 5.Nf3+- (5.Bc7?! Qf6 6.Qf3 Qa1 7.Qe4 Be7=) 5...Qh5 (5...Qd8 6.a3+-) 6.Bd3 (6.Bc7 Bb4 7.c3 Ba5+-) 6...d5 (6...d6 7.Bd4 d5 8.a3+-) 7.Nc3 (better 7.Bc7 Bb4 8.c3+-) 7...Bg4?? (better 7...Nc3 8.dc3 c6+-) 8.Nd5+- (8.Bc7?! Nc3 9.dc3 Nd7+-) 8...Na6 9.Be4 (9.Ba6 0-0-0 10.Nf4 Bf3 11.Nh5 Bd1 12.Rd1 ba6+-) 9...Bf3 10.Qf3 (10.Bg7 Bg7 11.Bf3 Qe5+-) 10...Qe5 11.d4 Qd6 12.b5 Nb4 (12...Nb8 13.Nc7! Qc7 14.Bb7 Qc3 15.Ke2 Qc2 16.Kf1+-) 13.0-0 0-0-0 (13...Rd8 14.Nb4 Qb4 15.Bb7 Rd6 16.Bc6 Ke7+-) 14.Nb4 Qb4 15.Bb7 Kb8 (15...Kd7 16.Qc6 Ke7 17.Qc7 Rd7 18.Qe5 Kd8+-) 16.Ba6 c6 17.Rab1 Qa5 18.Qf7 Qc7 19.bc6 Ka8 (19...Bb4 20.Rb4 Ka8 21.Qc7 Rb8 22.Bb7 Rb7 23.cb7) 20.Qc7 Bd6 (20...Rd4 21.Bb7) 21.Bb7 1–0. DEFFM – SujithLenin, freechess.org, 2020.

3.e3 e6 4.Nf3 d6 (4...Bb4 5.Bg7 Rg8 6.Bb2=) 5.b5 (5.Be2 d5 6.a3 Bd6=) 5...e5 (5...a6 6.a4=) 6.d4+= h6 (6...ed4!? 7.Qd4 Nc5=) 7.de5 (7.Bd3 Bf5+/–) 7...de5 (7...d5 8.Bd3+/–) 8.Qd8. DEFFM – GuestZKVT, freechess.org, 2018.

3.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Ne4).

4.Kf2+- d6 5.e4+-.

4.Kf2+- e6 5.Nf3 d5 6.e3+-.

4.Kf2+- e6 5.Nf3 Be7 6.e3 Bf6 7.d4 g5 (7...d5 8.c4+-) 8.h3 (8.Bd3 d5+-) 8...Rg8 (8...h5 9.Bd3+-) 9.Qd3 (9.e4 h5+-) 9...Qe7 (9...h5 10.c4+-) 10.Qh7 Rf8 (10...Rh8 11.Qe4+-) 11.Ba3 (11.c4 a6+-) 11...d6 12.c3 Bd7 (12...Nd7+-) 13.e4 (better 13.Qe4 Bc8 14.Bd3+-) 13...c6?? (13...Rh8 14.Qh8 Bh8=+) 14.e5+- Be5 (14...Rh8 15.ef6 Qf6 16.Qe4+-) 15.de5 Qd8 (15...c5+-) 16.Bd6 Qb6 17.Ke1 Qe3 18.Be2 (better 18.Kd1 Na6 19.ba6+-) 18...cb5 (18...Kd8 19.Bf8 Qc1 20.Bd1 Qe3 21.Kf1 Qc1+-) 19.Qg7 Qc1 20.Kf2 Rg8 (20...Qf1 21.Bf1 Bc6 22.Qf8 Kd7 23.Qe7 Kc8 24.Qc7) 21.Qg8 1-0. ClayPigeons (2095) - palang1359 (2015), Rated Bullet game, lichess.org, 2019.

4.Kf2+- e6 5.Nf3 Be7 6.e3 Bf6 7.Bf6 Qf6 8.c3 (8.Nc3 a6+-) 8...g5 9.h3 Rg8 (9...d6 10.d4+-) 10.g4 (10.d4 d5+-) 10...Qg7 (10...e5 11.Ke1+-) 11.Bg2 d6 12.d4 Nd7 13.Nbd2 b6 (13...f5 14.e4+-) 14.Qe2 Bb7 15.a4 0-0-0 (15...a5 16.Raf1+-) 16.a5 f5 17.gf5 (17.Ke1 Kb8+-) 17...ef5 18.ab6 ab6 19.c4 g4 20.hg4 Qg4 (20...fg4 21.Nh4+-) 21.Rhg1 Nf6 22.Ke1 Qh5 23.Kd1 Ng4 24.Kc2 (24.Rh1!? Qe8 25.Ra3 Qe7+-) 24...Rge8 25.Rh1 (25.Ra3!? f4 26.Ne5 Ne3 27.Re3 Qe2 28.Re2 Bg2 29.Rgg2 de5 30.de5 Rd4+-) 25...Qg6 (25...Ne3 26.Qe3 Qh1 27.Rh1 Re3 28.d5+/-) 26.Nh4+- Qg5 (26...Ne3!? 27.Qe3! Re3 28.Ng6 hg6+-) 27.Bb7 Kb7 28.Qf3 (28.Ng2!? Ne3 29.Ne3 Re3+-) 28...d5 29.cd5 (29.Ng2 Ne3 30.Ne3 Re3 31.Qh5 Qh5 32.Rh5 dc4 33.Nc4+-) 29...Re3? (29...Ne3 30.Kd3 Rd5 31.Rae1+=) 30.Qg2 (better 30.Qf5 Rd5 31.Qf8+-) 30...Re2?? (better 30...Rg3 31.Qg3 Ne3 32.Qe3 Qe3 33.Nf5 Qg5+=) 31.Qf3 (better 31.Qe2 Ne3 32.Kd3+-) 31…Ne3 (31...Ne3 32.Kb3 f4 33.d6 Qd5 34.Qd5 Nd5+-; 31...Qd2 32.Kb3 Qb2 33.Kc4 Rc2 34.Kd3 Qc3) 0-1. Jimito100 (2010) - palang1359 (2020), Rated Bullet game, lichess.org, 2020.

4.Kf2+- e6 5.Nf3 Be7 6.Bg7!? Rg8 7.Bc3 d6+-.

4.Kf2+- f6 5.Nf3 (5.e4 e5+-) 5...g6 (5...d5 6.e3+-) 6.c4 (6.e4!? Bg7+-) 6...Bg7 7.e3 0-0 8.Be2 h5 (8...a6 9.Qb3+-) 9.Rf1 g5 10.Kg1 g4 11.Nd4 d6 12.g3 (12.Qe1 f5+-) 12...c5 (12...f5 13.Qc2+-) 13.Nb3 a5 (13...a6 14.Nc3+-) 14.d4 (14.a4 e5+-) 14...a4 15.N3d2 h4 (15...f5 16.Na3+-) 16.Ne4 (16.Bg4!? hg3 17.hg3 f5+-) 16...f5 17.Nf2 h3 (17...hg3 18.hg3 cd4 19.ed4 e5+-) 18.Ng4 (better 18.Na3+-) 18...fg4+- 19.Rf8 Qf8 20.Bg4 Bg4 (better 20...Bh6!? 21.Qe2 Be3 22.Qe3 Bg4 23.dc5 Qf3 24.Qf3 Bf3+-) 21.Qg4+- Qf6 22.Nd2 Nd7 (22...a3 23.Bc3 b6 24.Qc8 Kh7 25.Qb7+- (25.Qh3?! Qh6 26.Qh6 Bh6+-)) 23.Rf1 (better 23.Qd7 Bh6 24.Qg4 Kh7 25.Qh3+-) 23...Qh6 24.Ne4 (24.Kh1 a3 25.Bc3 Qe3 26.Qd7 Qc3 27.Qb7+-) 24...Nf6?? (24...Qe3 25.Kh1 Rf8 26.Qe6 Kh8 27.Qh3 Kg8 28.Qe6 Kh8=) 25.Nf6+- ef6 26.d5 (better 26.Qe6!? Kh7 27.Rf4 Qg6+-) 26...Rf8?? (26...Qe3 27.Kh1 Re8 28.Bf6 Qe4 29.Qe4 Re4 30.Bg7 Kg7–/+) 27.Rf4 (better 27.Bc1+-) 27...Kh8? (27...f5 28.Bg7 Qg7 29.Qg7 Kg7 30.Kf2+-) 28.Qh4 (better 28.Qe6 Qg6 29.e4 Bh6 30.Rf6 Rf6 31.Bf6 Bg7+-) 28...Qh4 (28...Kg8 29.a3+-) 29.Rh4 (29.gh4?! Kh7+-) 29...Kg8 30.Rh3 f5 31.Bg7 Kg7 32.Kf2 Kf6 (32...Re8 33.Rh4+-) 33.Kf3 (33.Rh6 Kg7 34.Rd6 Rf7+-) 33...Ke5 (33...Kg6 34.Rh4+-) 34.Rh4 (better 34.Rh7!? Re8 35.Rb7 Kf6+-) 34...a3 (34...Re8 35.Rh7 b6 36.a3+-) 35.Rf4 (35.Rh6 Rf6 36.Rf6 Kf6+-) 35...b6 36.h4 Ra8 37.e4 Ra4 (37...Kd4 38.ef5 Kc3 39.f6+-) 38.Rf5 (better 38.ef5 Kf6 39.g4 Ra8+-) 38...Kd4 39.Rf4 Kc4 (39...Ra8 40.e5 Kc3 41.ed6 Kb2+-) 40.e5 Kb5 (40...Kd5 41.Ra4 de5+-) 41.e6 (better 41.Ra4 Ka4 42.ed6 b5+-) 41...Rf4 (41...Ra8+-) 42.Kf4 c4 (42...c4 43.e7 Kc5+-). RichardSommer (2040) – evripides33 (2005), lichess.org, 2020.

4.Kf2 Nc6 5.b5 Nd4 6.e3 Nf5 7.Be2 c5 8.Nf3 Qb6 9.a4 c4 10.Bc4 e6 11.Ne4 d5 12.a5 Qc7 13.b6 ab6 14.Bb5 Bd7 15.Bd7 Qd7 16.Ng3 ba5 17.Nf5 ef5 18.Ne5 Qe6 19.Re1 Bd6 20.Nf3 0-0 21.Kg1 Qh6 22.Qe2 g5 23.h3 g4 24.hg4 fg4 25.Be5 gf3 26.Qf3 Be5 27.d4 Qh2 28.Kf2 Bg7 29.Rh1 Qc7 30.Qd5 Qc2 31.Kf3 Rad8 32.Qb7 Qf5 33.Ke2 Qg4 34.Kd3 Qg6 35.Qe4 Qa6 36.Kd2 h6 37.Qg4 Qf6 38.Raf1 Qd6 39.Qf5 Qb4 40.Ke2 Qb2 41.Kf3 Qb7 42.Qe4 Rd5 43.Kf4 Qc7 44.Kf3 Rg5 45.g4 Qd7 46.Rfg1 Re8 0–1. axtur777 – ulikus, lichess.org, 2019.

4.Kf2+- Nc6 5.b5 Na5 6.e3 g5?? (6...a6+-) 7.Bh8 b6 8.Be2 Bb7 9.Bh5 Bd5 (9...h6 10.e4 e6 11.Nf3+-) 10.Nc3 d6 (10...Be6+-) 11.Nd5 Qd7 12.Qf3 Qb5 13.Nc7 Kd7 14.Nb5 Rc8 15.Bg4 Kd8 16.Qf7 Rc2 17.Kf3 Bh6 (17...e6 18.Bf6 Be7 19.Qe7 Kc8 20.Be6 Kb8 21.Qa7) 18.Qg8 Bf8 19.Qf8 1–0. Baumann,Heinz – Blasberg,Patrick, remoteschach.de, 2003.

4.Kf2 Nc6 5.b5 Nb8 6.Nf3 d6 7.e4 e5 8.Be2 Be6 9.Rf1 Nd7 10.Kg1 Nb6 11.Nbd2 Qd7 12.c4 0-0-0 13.a4 Na8 14.a5 f5 15.ef5 Bf5 16.Ne4 h6 17.h3 Bh3 18.gh3 Qh3 19.Kf2 g5 20.Rh1 Qf5 21.Qf1 g4 22.Ng3 Qf7 23.Ke1 gf3 24.Qf3 Qe8 25.Qh5 Qd7 26.Bg4 Qg4 27.Qg4 Kb8 28.Kd2 Be7 29.Raf1 Bg5 30.Kc2 Rh7 31.Qe2 Bf4 32.Nf5 h5 33.Rh5 Rf7 34.Nh4 Rdf8 35.Ng6 Rg8 36.Nf4 ef4 37.Qe6 Rg2 38.Kc3 Rf8 39.Rf5 Rgg8 40.Rf8 Rf8 41.Qg4 a6 42.Rf4 Rd8 43.ba6 ba6 44.Qg5 Re8 45.Qg6 Rd8 46.Rf7 Kb7 47.Qg7 Rc8 48.Ba3 Kc6 49.Qg2 d5 50.Qg6 Kb7 51.cd5 1–0. Phomopsis – ajimura, lichess.org, 2017.

4.Kf2 e5 5.e3 Bb4 6.Be5 d6 7.Bg7 Rg8 8.Bb2 Nc6 9.Qh5 Bg4 10.Qh7 Kd7 11.Qf7 Ne7 12.Nf3 Rf8 (12...Be6 13.Qf6+-) 13.Qc4 a5 (13...Bf3 14.gf3 c5+-) 14.Qg4 Nf5 (14...Ke8 15.Qh5 Kd7 16.e4+-) 15.e4 Kc6 16.ef5 Rg8 17.Qc4 Bc5 18.d4 d5 19.Ne5 Kd6 20.Qc5 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

4.Kf2 e6 5.b5 (5.Nf3 d5+-) 5...Qg5 (5...Qh4 6.g3 Qb4 7.Bc3 Qb5 8.Nf3+/–) 6.e4 (better is 6.c4!?+-) 6...Qb5+/– 7.Bc3 (7.Bc1 e5+/–) 7...b6 (7...Qb6 8.d4+/–) 8.a4 (8.Nf3 Bb7+-) 8...Qc5 (8...Qc6 9.Nf3+/–) 9.d4 Qg5 (9...Qc6 10.Bd3+/–) 10.Nf3+- Qg6 11.Bd3 Bb7 (11...Ba6 12.Ba6 Na6 13.Qe2+-) 12.e5 (better is 12.Nbd2+-) 12...Bf3?? (better is 12...f5+-) 13.Qf3 (13.gf3?! Qh5+-; 13.Kf3?! f5+-) 13...Qg5 14.Qa8 Qf4 15.Ke2 Qg4 16.Kf1 (16.Ke3 Qg5 17.Kf2 Qd8+-) 16...Qf4 17.Kg1 Qc1 18.Kf2 Qh1 (18...Qf4 19.Ke2 Qg4 20.Ke3 Qg5 21.Kf2 Qd8+-) 19.Qb8 Ke7 20.Qc7 Qh2 (20...Qe1 21.Be1 f5 22.Bb4 Ke8 23.Qc8 Kf7 24.Qd7 Be7 25.Qe7 Kg6 26.Qe6 Kh5 27.Qf5 Kh6 28.Bd2 g5 29.Qg5) 21.Bb4 Ke8 22.Qc8 (22.Qb8) 1–0. DEFFM – GuestWKTX, freechess.org, 2018.

4.Kf2 b5?! 5.Bb5 Bb7 6.Nf3 f6 7.Nd4 c6 8.Bc4 (8.Bd3 Qb6+-) 8...d5? (8...e5 9.Nf3 d5 10.Be2+-) 9.Bb3 (9.Bd3 g6+-) 9...e5 10.Ne6 Qd7 11.Nf8 Kf8 (11...Rf8 12.Rf1+-) 12.Qh5 g6 (12...Na6 13.Ba3 Qd6 14.b5+-) 13.Qh6 Kf7 14.c4 (14.Rf1 Qd6+-) 14...Qf5 15.Ke2 (better is 15.Kg3+-) 15...Qg5?? (15...Qg4 16.Ke1 dc4+-) 16.Qg5 fg5 17.Be5 Re8 18.Rf1 (18.Rf1 Ke6 19.Bd4+-) 1–0. GuestQSVZ – GuestGZYZ, freechess.org, 2018.

4.Kf2 d5 5.Qf3 Be6 (5...Qd6 6.a3+-) 6.Bb5 c6 7.Ba4 Qd7 8.b5! c5? (8...cb5 9.Bb3 Combination) 9.c4! a6?? (9...dc4 10.Ne2 Combination) 10.Nc3+- dc4 (10...Bg4 11.Qf4 Qf5 12.ba6 Kd8 13.Qf5 Bf5 14.ab7+-) 11.ba6 Nc6 12.ab7 Qd2 (12...Ra4 13.Na4 Qb7 14.Nc5 Qc8 15.Ne6 Qe6+-) 13.Nge2 Ra4 14.Qc6 Bd7 (14...Kd8 15.b8Q Bc8 16.Qbc8) 15.b8Q 1–0. GuestNKJR – GuestLQFT, freechess.org, 2017.

4.Kf2 e6 5.b5 Qh4 6.g3 Qb4 7.Bc3 Qd6 8.Bd3 b6 9.Qf3 c6 10.a4 Bb7 11.Nh3 Qc7 12.Ng5 f6?? (12...d6+-) 13.Qh5 Kd8 (13...Ke7 14.Qf7 Kd8 15.Bf6 gf6 16.Qf6 Kc8 17.Qh8+-) 14.Nf7 Kc8 15.Nh8 cb5 16.Rc1 ba4 (16...b4 17.Bb2+-) 17.Qh7 Bc6 (17...Qc5 18.Ng6 Nc6 19.Bb2+-) 18.Qg8 Qd8 19.Ng6 Kb7 (19...Bc5 20.Qg7 f5 21.Bf6+-) 20.Qf8 Qf8 21.Nf8 Na6 22.Ng6 Nc5 23.Be2 b5 24.Bd4 Ne4 25.Kg1 (25.Ke1 e5 26.Bc3 a6+-) 25...e5 26.Bc3 d5 27.Ba5 a6 28.Ne7 Re8 29.Nc6 Kc6 30.c4! bc4 (30...bc4 31.d3 Double attack (31.Ra4 Deflection; 31.d3 Decoy); 30...dc4 31.d3 Double attack (31.d3 Decoy)) 31.Ra4 g5 (31...Rb8 32.Bf3 Nd6 33.d3+-) 32.Bc4! dc4 33.Rcc4 Nc5 34.Bb4 Rb8 35.Rc5 Kd7 36.Nc3 a5 37.Rca5 Rc8 38.Ra7 (38.Ra7 Rc7 39.Nd5 Ra7 40.Ra7 Kc6 41.Nf6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Kf2 e6 5.b5 h6 6.Nf3 (6.Nc3 d5+-) 6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 (9...d5 10.c4+-) 10.c4 cb5 (10...d6 11.Nc3+-) 11.cb5 Qb6 (11...d5 12.Qc2 Nd7 13.Bd3+-) 12.Qc2 d5 (12...Qd8+-) 13.Qc8 Ke7 (13...Qd8 14.Qb7 Nd7+-) 14.Qb8 d4 15.Bd4 (better 15.Ne5 g5 16.Bb2+-) 15...Qa5 16.Bc5 Kf6 17.Qe5 Kg6 18.Bd3 f5 19.Qe6 Kh7 (19...Kh5 20.Qf5 g5 21.Qh3) 20.Bf5 g6 21.Qg6 1–0. GuestMLSN – GuestGHWH, freechess.org, 2020.

4.Kf2+- c6 5.e3 d6 6.Be2+-.

4.Kf2+- c6 5.e3 e5 6.Be5 Bb4 7.Bg7 Rg8 8.Bc3 Bc5 9.d4 Bb6 10.Nbd2 Qf6 11.Ne4 Qg6 12.Bd3 (12.Ng3 Bc7 13.Ne5 Qf6 14.Qf3 Qf3 15.Nf3 d5+-) 12...d5?? (better is 12...Qg2 13.Ke1 Qh1 14.Bf1 Rg2+=) 13.Neg5 Qh5 14.Nh7 Bg4 (14...Bd8 15.h4 f6+-) 15.Nf6 Ke7 16.Nh5 Bh5 17.Qd2 Nd7 18.g3 Rg4 19.Bf5 Nf6 20.Bg4 (better is 20.Ke1 Rgg8 21.Ne5 Ke8+-) 20...Ng4 (20...Ne4 21.Ke2 Nd2 22.Bb4 c5 23.dc5 Bg4 24.cb6 Kd7 25.Bd2 ab6 26.h4+-) 21.Kg2 Rg8 22.Raf1 Bc7 23.Ne5 Ne5 24.de5 b5 25.e4! b4 (25...de4 26.Qe3 Double attack (26.Qe3 Decoy; 26.h4 Passed pawn)) 26.Bb4 Ke6 27.Bd6! Bd6 28.ed6 (28.ed5 cd5 29.Rf6 Ke7 30.Rd6 Rc8+-) 28...Kd6 29.ed5 Rg4 30.dc6 Kc6 31.Rf5 (31.Rf6 Kc7 32.Qa5 Kb7 33.Qd5 Kc7 34.Rc6 Kb8 35.Qd8 Kb7 36.Qc8) 31...Bg6 32.Qd5 Kb6 (32...Kc7 33.Qc5 Kd7 34.Rd1 Rd4 35.Rd4 Ke6 36.Qe5) 33.Qd6 Kb7 34.Rb1 (34.Rb5 Kc8 35.Rb8) 34...Ka8 (34...Rb4 35.Rb4 Kc8 36.Rb8) 35.Qd8 (35.Rb8) 1–0. Fournier,Frederic (1955) – alexsans (1725), Active echecs21.com, 2004.

4.Kf2+- f6 5.e3 d5 6.d4+-.

4.Kf2+- f6 5.e3 e5 6.Be2?? (better 6.Ne5 fe5 7.Qh5 Ke7 8.Qe5 Kf7 9.Bc4 d5 10.Bd5 Kg6 11.Be4 Kf7 12.Rf1+-) 6...Bb4+/- 7.Rf1 d5 8.Kg1 Bd6 9.Nh4 g6 (9...0-0+/-) 10.Bg4 (10.c4 dc4 11.Bc4 Nd7+-) 10...Nc6 (10...f5!? 11.Nf5 gf5 12.Bf5 Bf5 13.Rf5 Nc6 14.Qh5 Kd7+/-) 11.Bc8 Qc8 (11...Rc8 12.Nc3 Be7 13.Qf3+-) 12.h3 (12.Rf6 Be7 13.Rc6 bc6+/-) 12...Qe6+/- 13.Qg4 (13.Nc3 0-0-0+/-) 13...f5 (13...Qg4 14.hg4 Nb4 15.Na3= (worse 15.Rf6 Nc2 16.Nc3 Na1 17.Ba1 Kd7-/+)) 14.Nf5 (better 14.Qa4!?+/-) 14...gf5=+ 15.Rf5 (15.Qf5 Qf5 16.Rf5 Kd7=+) 15...0-0-0 16.Na3 (16.Nc3 Ne7 17.Rg5 Qg4 18.Rg4 c6=+) 16...Kb8 (16...Rhg8 17.Qh5-/+) 17.Nb5 h5 (17...Bb4 18.d3=+) 18.Qf3 (18.Rh5!? Qg4 19.hg4+=) 18...Be7 19.a4 (19.Rh5 Rh5 20.Qh5 d4=+) 19...a6=+ 20.Nc3 Rhg8 (20...Nb4 21.Rh5 Rh5 22.Qh5 Nc2 23.Rf1=+) 21.Ne2 (21.Rh5 Rdf8 22.Qe2 Nb4=) 21...h4=+ 22.d3 (22.Rf1 Rdf8=+) 22...Rg7 (22...e4 23.Qf2 Bc5=+) 23.c4 (23.Rf1 Rdg8 24.Rf2 e4 25.de4 de4=) 23...Qg8 (better 23...dc4 24.d4 e4-/+) 24.cd5= Rd5 25.e4 Bc5 (25...Rd8!? 26.Be5 Ne5 27.Re5 Bf6 28.Qf6 Rg2 29.Kh1 Rf8 30.Qf8 Qf8 31.Kg2 Qg7 32.Kf3 Qe5-/+) 26.Kh1+= Rd8 27.Rc1 (27.Be5 Ne5 28.Re5 Rf7+=) 27...Bd6 (27...Qb3 28.Be5 Ne5 29.Re5 Rd3 30.Qf1=+) 28.d4 ed4 (28...Rg5 29.d5 Rf5 30.ef5= (worse 30.Qf5 Rf8 31.Qh5 Nb4-/+)) 29.Bd4 (better 29.Rc6!? bc6 30.Nd4+/-) 29...Nd4= 30.Nd4 Qa2 31.Rf1 (better 31.Qf1 Re8 32.Rf2 Qa4 33.Nf5=+) 31...Rdg8-+ 32.Rg1 Rg3 33.Qf1?? (33.Qf2 Qf2 34.Rf2 Rd3-+) 33...Qa3 (33...Rh3! 34.gh3 Qh2) 34.Nf3 White plans e5 (34.Rf3!? Qa4 35.Nf5 Qe4 36.Ng3 Rg3 37.Qd1-/+) 34...Qa4 (34...Bc5!? 35.Rc5 Qc5-+) 35.e5 (35.e5 Bc5 36.Qd1 Rh3 37.gh3 Rg1 38.Qg1 Bg1 39.Rf8 Ka7 40.Ng1 Qe4 41.Rf3-+). Akrapovik (1685) - HIannealing (2115), lichess.org, 2021.

(--> 1.b4 e5 2.Bb2 Nf6).

3.a3 Nc6 4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3 e5).

3.a3 e4 4.c4 (--> 1.b4 e5 2.Bb2 e4 3.c4 Nf6 4.a3).

3.b5 b6 4.e3 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.e3 b6).

3.b5 Bc5 (--> 1.b4 e5 2.b5 Bc5 3.Bb2 Nf6).

3.b5 d5 4.e3 d4 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.e3 Nf6).

3.b5 g6 4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 e6).

3.e3 d5 4.Be5 Bb4 5.Nf3 0-0 6.a3 Be7 7.Bb2 c5 8.Be2 Nc6 9.0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 0-0 5.a3 Be7 6.Be2 d5 7.Nf3 c5 8.0-0 Nc6 9.Bb2).

(--> 1.b4 e5 2.a3 d5 3.Bb2 Nf6).

4.e3 a5 5.b5 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 a5).

4.e3 Nbd7 5.c4 c6 6.Nf3 Bd6 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.d4).

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.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3).

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.a3).

4.c4 Be7 5.e3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4).

4.e3 Be7 5.Nf3 0-0 6.c4 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0-0 6.Nf3).

(--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6).

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

4.c4 Be7 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5) .

4.e3 Nbd7 5.c4 Be7 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Nbd7).

4.e3 Be6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.e3 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

4.Nc3 d5 5.e3 (---> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5 5.Nc3).

4.e3 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5).

4.f3 d5 5.e3 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5 5.f3).

4.Be5 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0).

4.Be5 Nc6 5.Bc3 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.Bc3 Nc6).

4.Be5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3) .

4.Be5 0-0 5.Nf3 d6 6.Bc3 Nc6 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nf3 d6 5.Bc3 Nc6 6.e3 0-0).

4.Be5 Nc6 5.Bb2 d5 6.c4 0-0 7.Nf3 Bg4 8.h3 (---> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2 Bg4 8.h3).

(--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6) .

4.a3 Ba5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.a3 Ba5).

4.a3 Ba5 5.Nf3 d5 6.e3 0-0 7.c4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.a3 Ba5 7.Nf3).

4.Bb2 d5 5.e3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 d5 5.Bb2).

4.Bb2 d5 5.e3 c5 6.Nf3 Bg4 7.Be2 0-0 8.0-0 Nc6 (---> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 0-0 5.Nf3 d5 6.Be2 c5 7.0-0 Nc6 8.Bb2 Bg4).

4.Nc3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nc3).

4.c4 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0).

4.c4 0-0 5.e3 Nc6 6.Bb2 d5 7.cd5 Nd5 8.a3 Ba5 9.Nf3 Bg4 10.Be2 Re8 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2 Re8 8.a3 Ba5 9.cd5 Nd5 10.Be2 Bg4).

4.c4 0-0 5.e3 Nc6 6.Bb2 Re8 7.Nf3 d5 8.cd5 Nd5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 Nc6 5.Bb2 0-0 6.e3 d5 7.cd5 Nd5 8.Nf3 Re8) .

4.c4 0-0 5.e3 d5 6.cd5 Nd5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.cd5 Nd5).

4.c4 0-0 5.e3 d5 6.cd5 Nd5 7.Nf3 Nc6 8.Bb2 Bf5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2 Bf5 8.cd5 Nd5).

4.c4 0-0 5.e3 d6 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d6).

4.e3 0-0 5.Nf3 d5 6.Be2 Nc6 7.Bb2 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6. Be2 0-0 7.Nf3).

4.e3 0-0 5.Nf3 Re8 6.Be2 d5 (---> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 0-0 5.Nf3 d5 6.Be2 Re8).

4.e3 Nc6 5.Bb2 0-0 6.Nf3 d5 7.Be2 Bf5 8.0-0 Re8 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6.Be2 0-0 7.Nf3 Re8 8.0-0 Bf5).

4.e3 d6 5.Bb2 0-0 6.Nf3 Nc6 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 0-0 6.Nf3 d6).

4.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nf3).

4.Nf3 0-0 5.e3 Nc6 6.Bb2 d5 7.c4 Bf5 8.cd5 Nd5 9.Be2 Re8 10.a3 Ba5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2 Re8 8.a3 Ba5 9.cd5 Nd5 10.Be2 Bf5).

4.Nf3 Nc6 5.Bb2 0-0 6.e3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 0-0 6.Nf3).

4.Nf3 Nc6 5.Bb2 0-0 6.e3 d6 7.Be2 Re8 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 0-0 6.Nf3 d6 7.Be2 Re8).

4.Nf3 Nc6 5.Bb2 d5 6.e3 Be6 7.Be2 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6. Be2 0-0 7.Nf3 Be6).

4.Nf3 Nc6 5.Bb2 d6 6.e3 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 0-0 6.Nf3 d6).

4.Bb2 Bb4 5.e3 0-0 6.c4 d5 7.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2).

4.Bb2 Bb4 5.e3 0-0 6.Nf3 d5 7.c4 Bg4 8.cd5 (---> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Nc6 7.Bb2 Bg4 8.cd5).

4.Bb2 Bb4 5.e3 d5 6.Bb5 0-0 7.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 0-0 6.Nf3 d5 7.Bb5).

4.Bc3 Bb4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Bc3 Nc6).

4.Bf6 Qf6 5.Nc3 Bb4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nc3 Nc6 5.Bf6 Qf6).

(--> 1.b4 e6 2.Bb2 Nf6) .

3.a3 Nc6 4.Nf3 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nc6 5.Nf3).

3.a3 d6 4.e3 b6 5.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 d6).

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

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

3.c4 g6 4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.c4).

3.c4 Be7 4.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.c4).

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

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

3.e3 d5 4.b5 Bd6 5.c4 0-0 6.a4 Nbd7 7.Nf3 b6 8.Be2 Bb7 9.0-0 c5 (--> 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).

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

3.e3 Be7 4.b5 0-0 5.c4 b6 6.Nf3 Bb7 7.d4 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.d4).

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

3.Nf3 b6 4.e3 Bb7 (--> 1.b4 b6 TESTB0 2.Bb2 Bb7 3.e3 e6 4.Nf3 Nf6).

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

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

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

4.b5 b6 5.e3 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 a5 6.b5).

4.b5 b6 5.e3 d5 6.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4 b6).

4.b5 b6 5.Nf3 Bb7 6.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 a5 6.b5).

4.b5 c5 5.c4 b6 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.c4 b6).

4.b5 c5 5.c4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.c4).

4.b5 c5 5.d4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.d4).

4.b5 c5 5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5).

4.b5 c5 5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 c5).

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

4.b5 c6 5.c4 d5 6.cd5 cd5 7.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4 cb5 7.cb5).

4.b5 c6 5.c4 d5 6.e3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4 Bd6).

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

4.b5 c6 5.e3 d5 6.bc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.bc6).

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

4.b5 d5 5.e3 c5 6.c4 Nbd7 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 c5 6.e3 Nbd7 7.c4).

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

4.b5 d5 5.e3 Bd6 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 Bd6 6.e3).

4.b5 d5 5.e3 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

4.b5 d5 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5).

4.b5 d5 5.Nf3 c5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c5 6.Nf3).

4.b5 d5 5.Nf3 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

4.c3 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.c3).

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

4.e3 d5 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a6).

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

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

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

4.c4 Bb7 5.e3 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4 Bb7).

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

4.c4 c5 5.b5 Bb7 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4 Bb7).

4.c4 c5 5.b5 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4).

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

4.c4 Be7 5.Nf3 Bb7 6.e3 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.e3 a5 5.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 b6).

4.e3 c5 5.b5 d5 6.f4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.f4)

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

4.Nf3 a5 5.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 b6).

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

4.Nf3 Bb7 5.e3 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

4.Nf3 Bb7 5.e3 c5 6.bc5 bc5 7.c4 Be7 8.Be2 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.c4 c5 8.bc5 bc5).

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

4.Nf3 Bb7 5.e3 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 Bb7 5.g3 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3).

4.Nf3 c5 5.b5 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3).

4.Nf3 c5 5.bc5 Bc5 6.e3 d5 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 b6).

4.Nf3 d5 5.e3 c5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3).

4.Nf3 d5 5.e3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 b6).

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

5.c4 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4 Bb7).

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

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

5.c4 Be7 6.Nf3 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).

5.c4 Be7 6.Nf3 d6 7.Nc3 Nbd7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.c4 d6 6.Nf3 Nbd7 7.Nc3 Be7).

5.d4 d5 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.d4).

5.Nf3 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

5.Nf3 c5 6.b5 Be7 7.Be2 0-0 8.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c5 8.b5).

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

5.Nf3 d6 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d6).

5.f4 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.f4 Bb7).

4.b5 a6 5.c4 ab5 6.cb5 d5 7.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.c4 ab5 7.cb5).

4.b5 b6 5.c4 Bb7 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.c4 Bb7).

4.b5 b6 5.e3 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 c5 6.b5) .

4.b5 b6 5.e3 Bb7 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

4.b5 b6 5.e3 Bb7 6.Nf3 Be7 7.Be2 0-0 8.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c5 8.b5).

4.b5 b6 5.Nf3 Bb7 6.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 c5 6.b5).

4.b5 b6 5.Nf3 Bb7 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

4.b5 Be7 5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Be7).

4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5) .

5.e3 a5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 a5).

5.e3 Bd6 6.c4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4).

5.e3 Bd6 6.Nf3 Nbd7 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4 Nbd7).

5.e3 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 c5 6.b5).

5.e3 Nbd7 6.Nf3 Bd6 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4 Nbd7).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.b5).

5.Nf3 a6 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.Nf3).

5.Nf3 Bd6 6.e3 Nbd7 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4 Nbd7).

5.Nc3 Nc6 6.e3 d5 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Nc3).

5.d4 Bb6 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Bb6).

5.d4 Be7 6.c4 0-0 7.Nf3 d5 8.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.c4).

5.d4 Be7 6.e3 0-0 7.c4 d5 8.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.c4).

5.d4 Be7 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7).

5.d4 Be7 6.e3 d5 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

5.e3 Nc6 6.Nf3 0-0 7.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nc6).

5.e3 Nc6 6.Nf3 0-0 7.Be2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0).

5.e3 Nc6 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6).

5.e3 Nc6 6.Nf3 d5 7.d4 Bd6 8.c4 0-0 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).

5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5).

5.e3 d5 6.d4 Bd6 7.Nf3 0-0 8.Bd3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.d4 Bd6 8.Bd3).

5.e3 d5 6.d4 Bd6 7.Nf3 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6).

5.e3 d5 6.d4 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7).

5.e3 d5 6.Nf3 0-0 7.d4 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0).

5.e3 d5 6.Nf3 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).

5.e3 d5 6.Nf3 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).

5.Nf3 Nc6 6.e3 0-0 7.Be2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0).

6.c4 d5 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4).

6.d4 Bb6 7.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Bb6 7.e3 0-0).

6.d4 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 c5 4.bc5 Bc5 5.d4 Be7 6.e3 0-0).

6.d4 Be7 7.c4 d5 8.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.c4).

6.Nf3 Nc6 7.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 Nc6).

6.Nf3 Nc6 7.Be2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0).

6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0).

6.Nf3 d5 7.c4 Be7 8.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.c4).

6.Nf3 d5 7.d4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.d4 Bd6).

6.Nf3 d5 7.d4 Bd6 8.c4 dc4 9.Bc4 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6 8.c4 dc4 9.Bc4 0-0).

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

4.e3 a6 5.Nf3 d5 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 a6).

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

4.d3 Be7 5.Nd2 0-0 6.Ngf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.d3 0-0 6.Nbd2).

4.d4 b6 5.e3 c5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.d4).

4.d4 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.d4).

4.d4 Be7 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.d4).

4.d4 Be7 5.e3 Nbd7 6.c4 c6 7.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

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

4.d4 Be7 5.Nf3 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).

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

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

4.e3 a5 5.b5 c5 6.c4 Nbd7 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 c5 6.e3 Nbd7 7.c4).

4.e3 a5 5.b5 Bd6 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 Bd6 6.e3).

4.e3 a5 5.b5 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

4.e3 a6 5.c4 c5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.c4).

4.e3 a6 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a6).

4.e3 a6 5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2 a6).

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

4.e3 b6 5.Nf3 Bb7 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.Be2).

4.e3 b6 5.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 b6).

4.e3 b6 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 b6).

4.e3 b6 5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2 b6).

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

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

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

4.e3 Bd6 5.c4 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 0-0 6.c4).

4.e3 Bd6 5.c4 b6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 b6).

4.e3 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.e3 Bd6 5.c4 c6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

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.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 0-0).

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 Bd6 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Bd6).

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 a5 5.b5 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a5 6.b5).

4.Nf3 a6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3).

4.Nf3 b6 5.g3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 d5).

4.Nf3 c6 5.d4 Nbd7 6.e3 Bd6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.d4).

4.Nf3 Bd6 5.e3 a5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 Bd6 6.e3).

4.Nf3 Nbd7 5.e3 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).

4.Nf3 Nbd7 5.e3 c5 6.b5 Bd6 7.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4 Nbd7).

4.Nf3 Nbd7 5.e3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7).

4.Nf3 Be7 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).

4.Nf3 Be7 5.e3 0-0 6.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nbd7 5.Nf3 Be7 6.Be2 0-0).

(---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5).

5.b5 a6 6.c4 dc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.c4 dc4)

5.b5 Bd6 6.c4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.Nf3 0-0 7.c4).

5.b5 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 c5 6.b5).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.e3).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5).

6.c4 dc4 7.Bc4 0-0 8.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4 dc4 8.Bc4).

6.d4 Bd6 7.Nf3 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6).

6.d4 Be7 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

6.Nf3 0-0 7.c4 Be7 8.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.c4).

6.Nf3 0-0 7.d4 Bb6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Bb6 7.e3 0-0).

6.Nf3 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).

6.Nf3 a6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3 c5 6.bc5 Bc5).

6.Nf3 a6 7.Be2 Nc6 8.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0 8.0-0 a6).

6.Nf3 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).

6.Nf3 Nc6 7.d4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.d4 Bd6).

6.Nf3 Nc6 7.d4 Bd6 8.c4 0-0 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).

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).

5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6 5.a3 Nbd7).

5.c4 c6 6.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

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 Nbd7).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).

5.Nf3 a5 6.b5 c5 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a5 5.b5 c5 6.e3 Nbd7 7.c4).

5.Nf3 c5 6.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7).

5.Nf3 c5 6.bc5 Bc5 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).

5.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7).

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

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

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

5.c4 c6 6.Nf3 Nbd7 7.Nc3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.Nc3 Nbd7).

5.d3 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.d3).

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

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.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5).

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

5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

5.Nf3 Nbd7 6.c4 c6 7.d4 0-0 (--> 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 6.d4 0-0 7.Nbd2 c6 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7 8.Nbd2).

5.b5 a6 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.Nf3).

5.b5 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 c5 6.b5).

5.bc5 Bc5 6.d4 Bb6 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Bb6).

5.bc5 Bc5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3).

5.bc5 Bc5 6.e3 Nc6 7.Be2 0-0 8.0-0 Re8 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Be2 0-0 8.0-0 Re8).

5.bc5 Bc5 6.e3 Bd7 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 Bd7).

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

4.c4 0-0 5.e3 b6 6.Nf3 Bb7 7.d4 c5 (---> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.d4 c5).

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

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

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

4.c4 a6 5.Nf3 0-0 6.d4 c6 7.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 a6).

4.c4 b6 5.Nc3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.c4 Bb7 5.Nc3 Be7).

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

4.c4 b6 5.Nf3 Bb7 6.e3 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.c4 d5 5.e3 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).

4.c4 d5 5.e3 b6 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 b6).

4.c4 d5 5.e3 c6 6.d4 Nbd7 7.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7).

4.d4 (--> 1.b4 Nf6 2.d4 e6 3.a3 Be7 4.Bb2).

4.d4 b6 5.e3 Bb7 6.Nf3 0-0 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.d4).

4.d4 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Be7 5.d4).

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

4.e3 b6 5.Nf3 Bb7 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.e3 c6 5.Nf3 d5 6.c4 0-0 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

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

4.Nf3 0-0 5.e3 b6 6.d4 Bb7 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.d4).

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

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

4.Nf3 0-0 5.g3 b6 6.Bg2 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 e6 4.g3 Nf6 5.a3 Be7 6.Bg2 0-0).

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

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

4.Nf3 b6 5.e3 Bb7 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 d5 5.d3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.d3 c5).

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

4.Nf3 d5 5.e3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7).

4.Nf3 d5 5.e3 Nbd7 6.Be2 b6 7.0-0 0-0 8.d3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nbd7 5.Nf3 Be7 6.Be2 0-0 7.0-0 b6 8.d3).

4.g3 0-0 5.Bg2 d5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.g3 Be7 5.Bg2 0-0).

4.g3 d5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 d5 4.g3 Be7).

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

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

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

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

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

5.Nf3 b6 6.c4 d5 7.d4 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 b6 6.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0).

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

5.Nf3 d5 6.c4 dc4 7.Bc4 b6 8.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.d4 b6 7.c4 dc4 8.Bc4).

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

5.Nf3 0-0 6.c4 b6 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.d4 b6 7.c4).

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.Nf3 b6 6.Be2 Bb7 7.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5).

5.Nf3 Nbd7 6.d4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.d4 Nbd7).

5.Nf3 Nbd7 6.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 Be7 6.Be2).

5.g3 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.g3).

4.Nf3 Bg7 5.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.e3 Bg7 5.Nf3).

4.Nf3 Bg7 5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 g6 5.Nf3 Bg7).

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

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

3.b5 a5 4.c4 d5 5.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.c4).

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

3.b5 Bc5 4.c4 c6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.c4 Bc5).

3.b5 Bc5 4.e3 c6 5.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bc5).

3.b5 Bc5 4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bc5).

3.b5 Bc5 4.e3 d5 5.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bc5).

3.b5 Bc5 4.Nf3 0-0 5.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Bc5 4.e3 0-0 5.Nf3).

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

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

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

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

4.a4 b6 5.Nf3 Bb7 6.e3 Be7 7.c4 0-0 8.Be2 d6 9.0-0 Nbd7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d6 8.0-0 Nbd7 9.a4 a6).

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

4.a4 c5 5.c4 d5 6.e3 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).

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

4.a4 c5 5.e3 d5 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).

4.a4 Be7 5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Be7).

4.a4 Be7 5.Nf3 0-0 6.e3 ab5 7.ab5 Ra1 8.Ba1 d5 (--> 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).

4.c4 d5 5.a4 dc4 6.e3 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 dc4).

4.c4 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.c4).

4.c4 Be7 5.e3 0-0 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 a6).

4.c4 Be7 5.e3 0-0 6.Nf3 d5 7.Be2 c6 8.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6).

4.e3 d5 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3 0-0 9.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1).

4.e3 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.e3 a6).

4.e3 Be7 5.a4 0-0 6.c4 d5 7.Nf3 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).