3.a3 Na6 4.c3 Nf6 5.Nf3 b5 (5...d5 6.e3=) 6.e3 e6 7.Be2 Be7 8.d4 0-0 9.0-0 Bb7 (9...Nc7 10.ba5 d5 11.a4 Ra5 12.Ba3=) 10.Nbd2 d5 11.Ne5 (11.ba5 Qa5 12.a4 ba4 13.Ra4 Qb6=) 11...Nb8 Black plans a4 (11...Bd6 12.Nb3 a4 13.Na5=) 12.Nb3 a4 13.Nc5 Bc5 14.dc5 Nbd7 15.Nd3 (15.Qd4 Ne5 16.Qe5 Re8=) 15...Re8 16.f3 (16.f4 Qc7=+) 16...Qc7 17.Qc2 Ba6 (17...e5 18.f4=) 18.Rad1= Rad8 19.Nf2 Ne5 20.Bc1 Ng6 21.f4 Bc8 22.Ng4 Ng4 23.Bg4 f5 (23...e5 24.f5 Ne7 25.Be2=) 24.Bh5 e5 (24...Qf7 25.Bb2=) 25.g3 (25.Bg6 hg6 26.Qf2 Re6=) 25...Be6 26.Rf2 (26.Bb2 e4=+) 26...d4 27.cd4 (27.cd4 Bb3 Combination; 27.ed4 Bb3 Combination) 27...Bb3 28.Qd2 (28.Qf5 Bd1 29.Bd1 ed4 30.ed4 Rd4=+) 28...Bd1-/+ 29.Qd1 ed4 30.ed4 Qf7 31.Rf3 (31.Bb2 Re4-/+) 31...Re4 32.Bb2 Qa2 33.Rf2 Qe6 34.Re2 Re8 35.Re4 fe4 36.Be2 (36.Qg4 Qa2 37.Qe2 Re7-/+) 36...Ne7 37.Bg4 Qd5 38.Ba1 (38.Qe2 Nf5-+) 38...Nf5 39.Bf5 Qf5 40.Qe2 (40.d5 cd5 41.Be5-+) 40...e3 41.Bb2 (41.Bc3 Qb1 42.Be1 Qc1-+) 41...Qb1 42.Kg2 Qb2!! 43.Qb2 (43.Qb2 e2 Passed pawn) 43...e2 44.Qa2 Kf8 (44...Kf8 45.Qb1 e1Q 46.Qf5 Kg8-+) 0–1. Reussner,Hans_Dieter – Wassermann,Felix, desc–online.de, 2002.

3.a3 Qc7 4.e4 e5 5.Nf3 f6 6.b5 Bc5 7.d4 ed4 8.Bd4 Bd4 9.Qd4 Ne7 10.b6 Qd8 11.Nc3 0-0 12.Bc4 d5 13.ed5 cd5 14.Nd5 Kh8 15.Nc7 Nf5 16.Qd8 Rd8 17.Na8 Nd4 18.0-0-0 Nbc6 19.Nd4 Nd4 20.Rhe1 g6 21.Rd4 Rd4 22.Re8 Kg7 23.Rc8 Re4 24.Bd5 Re2 25.Rc7 Kh6 26.Rb7 Rf2 27.Re7 Kg5 28.b7 Rf1 29.Kb2 Rb1 30.Kb1 a4 31.b8Q h5 32.Qg3 1–0. mtra – Werthenstrasse, Internet, 2002.

3.ba5 d6 4.Nf3 e5 5.e3 Be6 6.Be2 Nd7 7.a3 (7.Bc3 Ngf6=) 7...f5 (7...Ra5 8.0-0=) 8.0-0 Be7 9.d4 e4 (9...Qa5 10.Bd3=) 10.Nfd2 Ngf6 (worse 10...Ra5 11.d5 Rd5 12.Bg7+/-) 11.c4 0-0 (11...Qa5 12.Nb3 Qb6 13.Nc3=) 12.Nc3 (12.Bc3 Qc7=) 12...Qa5= 13.d5 cd5 14.cd5 Nd5 15.Nd5 Bd5 (15...Qd5? 16.Bc4 Qc4 17.Nc4 Bc4 18.Qd4+/-) 16.Nc4 (16.Nb3!? Bb3 17.Qb3 Kh8 18.Qb7=) 16...Bc4=+ 17.Bc4 Kh8 18.Be6 (18.Rb1 b6=+) 18...Ne5 (18...Nc5 19.Bc4-/+) 19.Bd4 (19.Qb3 Bf6=) 19...Nd3 (19...Nc6 20.Rb1 Bf6 21.Bf6 Rf6 22.Bd5=+) 20.Rb1 (20.Qb3!?=) 20...Bf6-/+ (20...Qa3 21.Qh5 d5 22.Bf5 (worse 22.Rb7 Nf2 23.Rf2 Ra6 24.Bf5 h6+-) 22...Rf5 23.Qf5+-) 21.Rb7 Bd4 22.ed4 Rae8 23.d5 Nc5 24.Rb1 (better 24.Rf7!?=+) 24...Qa3-+ 25.Ra1 Qc3 26.Ra7 f4 Black intends e3 (26...Qf6 27.Qa1-+) 27.Qg4 (27.Bf7 Rb8-/+) 27...e3-+ 28.fe3?? (28.Qf3 ef2 29.Qf2 Ne6 30.de6 Re6-+) 28...fe3 (better 28...Ne6 29.Rb7 fe3-+) 29.Raf7 Rf7 30.Bf7?? (better 30.Rf7 Qe5 31.Rf5-+) 30...e2 31.Be8 Qe3 (31...ef1B 32.Qf4 Qf6 33.Qf6 gf6 34.Kf1=; 31...ef1Q?! 32.Kf1 Qc1 33.Ke2 Qc2 34.Kf1 Qb1 35.Kf2 Ne4 36.Ke2 Nc3 37.Kd2 Qb2 38.Kd3 Nd5 39.Bf7 Qc3 40.Ke2-/+; 31...ef1R?! 32.Kf1 Qc1 33.Ke2 Qc2 34.Kf1-/+) 32.Rf2 (32.Kh1 ef1Q) 32…e1Q 0-1. Nimrod64 (2295) - Berthe (2300), Rated Bullet game, lichess.org, 2015.

3.b5 e6 4.a3 Qg5 (4...d5!?=) 5.e3 d5 6.Nf3 Qg4 7.d4 (7.Nc3 Bd6+=) 7...cb5 8.h3 Qh5 9.g4 Qh6 10.Nc3 (10.Bb5 Bd7 11.Bd3 Nc6+=) 10...b4= 11.Nb5 Na6 12.ab4 ab4 13.c4 (13.Bd3 Be7=) 13...bc3=+ 14.Bc3 Be7 15.Nc7! Nc7 Exploits the pin 16.Ra8 Eliminates the defender a8 16...Na8 17.Qa4 Bd7 (17...Kd8 18.Ne5 Qf6+-) 18.Qa8 Bd8 19.Ba5 (19.Qb7 f6+=) 19...Qf6 20.Ne5 Qe7 21.Nd7 (21.Bd8 Qd8 22.Qd8 Kd8 23.Nf7 Ke7 24.Nh8 g6+-) 21...b6 (21...Nh6 22.g5! f6 23.gh6 Qd7 24.hg7+-) 22.Nb6 f5 23.Nc8 Qa3 (23...Ba5 24.Qa5 Qf8 25.gf5 ef5 26.Qb5 Kf7 27.Qd5 Kg6 28.Rg1 Kh6 29.Nd6+-) 24.Qc6 Kf7 25.Bd8 Qb4 26.Kd1 Qb3 27.Ke1 Qb4 28.Ke2 Qc4 29.Qc4 dc4 30.Nd6 Kf8 31.gf5 ef5 32.Bg2 h5 (32...Nh6 33.Bd5 Ng8 34.Ra1+-) 33.Rb1 Nh6 34.Bd5 Nf7 35.Nf7 f4 (35...Rh6 36.Rb8 Rb6 37.Bb6 Ke7 38.Bc5 Kd7 39.Bd6 g5 40.Rd8) 36.Rb8 f3 37.Kf3 Ke8 38.Ne5 c3 39.Bf6 1–0. Pereira – Trainee, internet, 2020.

3.c3 Na6 4.a3 (4.Qb3 A) 4...e5 5.c4 (5.ba5 Qa5 6.Nf3 Nf6 7.e3 e4 8.Nd4 Nc5 9.Qc2 d5 10.c4 dc4+=; 5.e3 Nf6 6.Be2 d6 7.ba5 Nc5 8.Qb6 Qb6 9.ab6 Na4 10.Ba3 Nb6+=) 5...d6 6.a3 Be6 7.d4 ed4 8.Bd4 ab4 9.ab4 d5 10.c5 Nf6=; B) 4...d6 5.ba5 Nc5 6.Qb6 Qb6 7.ab6 Na4 8.Bc1 Nf6 9.d3 e5 10.e4 Be6+=) 4...d5 (4...Nf6 5.c4 ab4 6.ab4 d5 7.b5 cb5 8.cb5 Nc7 9.Ra8 Na8 10.Nf3 Nb6=) 5.e3 (5.Nf3 Nf6 6.e3 Bg4 7.b5 Qb6 8.c4 cb5 9.cb5 Nc5 10.Bd4 Qd6=) 5...Nc7 (5...e5 6.c4 f6 (6...dc4 7.Bc4 b5 8.Bb3 f6 9.Qh5 g6 10.Qf3 Bd7=) 7.cd5 ab4 8.dc6 bc6 9.Qh5 (9.d4= ba3 10.Ba3 Qa5+=) 9...g6 10.Qe2 Bf5=) 6.d4 (6.Nf3 Bg4= (6...ab4 7.cb4 Bf5 8.Be2 f6 9.d4 e6 10.0-0 Bd6=) 7.Be2 Bf3 8.Bf3 e5 9.0-0 Bd6 10.d3 Nf6=) 6...Nf6 (6...Bf5 7.Nf3= e6 8.Be2 Nf6 9.0-0 Bd6 10.Nh4 Be4+=) 7.Bd3 g6 (7...e6 8.Nf3= Bd6 9.0-0 0-0 10.Ne5 ab4=) 8.Nd2 (8.Nf3 Bf5 9.0-0 e6 10.Bf5 gf5=) 8...Bg7 (8...Bf5 9.Bf5 gf5 10.ba5 Rg8=) 9.Ngf3 0-0 (9...Bf5 10.Bf5 gf5=) 10.Qc2 (10.0-0 Qd6=) 10...Nce8 (10...ab4 11.cb4 Bg4 12.Ne5=; 10...Bg4=) 11.Nb3 (11.0-0 Qd6+=) 11...ab4 12.cb4 Nd6 13.0-0-0 (better is 13.Ne5!?=) 13...Bf5 14.Ne5 Bd3 15.Rd3 Nd7 16.Nd7 Qd7 17.f3 (17.Kd1 b6-/+) 17...Nc4 18.Nd2 Nb2 19.Qb2 e5 (19...Qf5 20.e4 Qg5 21.Rg1-/+) 20.Nb3 (20.de5 Qe6 21.f4 f6 22.ef6 Bf6+=) 20...ed4 21.ed4 Qf5 22.Kc2 (22.Rc3 Qf4 23.Kd1 Bd4 24.Nd4 Qd4 25.Qd2 Qf6-/+) 22...Rfe8-+ 23.Kc3 (23.g4 Qe6-+) 23...b6 24.Ra1 (24.g4 Qf4-+) 24...Rac8 25.g4 Qf6 26.Qf2 c5 27.Rdd1 cd4 28.Kd2 Qf4 (28...Qf4 29.Qe3 Qe3#) 0–1. Gil Clariana,Jord (1870) – Djingarova,E (2305), IX Miquel Mas de Figueres Open, 2008.

3.c3 g6 4.Qa4 (4.Nf3 Bg7 5.b5 cb5=) 4...Bg7 (4...b5 5.Qc2=) 5.b5 d5 6.d4 (6.e3 Nf6=) 6...Nf6 (6...cb5 7.Qb5 Qd7 8.e3=) 7.h3 (7.e3 0-0=+) 7...0-0 8.g4 (8.e3 cb5 9.Bb5 Na6=+) 8...Bd7-/+ 9.e3 (9.Na3 Qb6 10.c4 Ne4=+) 9...cb5 10.Bb5 Bb5 11.Qb5 Qd7 (11...Ra6!?-/+) 12.Qd7= Nfd7 (12...Nbd7 13.Nd2=) 13.Ba3 (13.Nd2 Rc8=) 13...Nc6=+ 14.Nd2 b5 15.Nb3 Rfc8 16.Bc5? e5 17.Nf3? e4-+ 18.Nh4 Nd8 19.Ng2? Ne6 20.Nf4? Nec5 21.Nc5 Nc5 22.dc5? Bc3 23.Ke2 Ba1 24.Ra1 Rc5 25.Kf1 b4 26.Ne2 Rac8 27.Kg2 Rc2 28.Nd4 Rc1 29.Nb3 Ra1 30.Na1 a4 31.Kg3 Rc1 32.Kf4 Ra1 33.Ke5 Ra2 34.Kd5 b3 35.Ke4 Rf2 36.Kd4 b2 (37.h4 b1Q-+) 0–1. riverborne – poppp4, Caissa's Web, 2006.

3.Nc3 ab4-/+ 4.Ne4 f5 (4...d5 5.Ng3-/+) 5.Ng3 e6 6.e3 Nf6 7.h4 (7.Nh5 Qe7=+) 7...Bd6 (7...Be7 8.h5-/+) 8.N3e2 (8.Nh5!? Nh5 9.Qh5 g6 10.Qh6=+) 8...0-0-/+ 9.h5 h6 10.Nf3 Qe8 11.Bf6 Rf6 12.Nh4 (12.c4 bc3 13.Nc3 b5-+) 12...Be5 (12...Qh5 13.c4-+) 13.d4 Bc7 14.Ng6 Ba5 15.g3 b3 16.c3 b2 (16...ba2 17.Ra2 b6 18.Bg2-/+) 17.Rb1=+ Bc7 18.Rb2 Na6 19.Bg2 b5 (19...d5 20.Nef4=) 20.Qb3 (20.Rb5 d5 21.Rb2 Bd6+-) 20...b4 (20...d5 21.0-0=) 21.cb4 Rb8 (better 21...Nb4!? 22.Nef4 Rb8+=) 22.a3+- Bd6 23.e4 (23.0-0 Nc7+-) 23...fe4 24.Be4 (24.Nc3!? Bc7 25.Ne4+-) 24...c5+= 25.b5 Nc7? (better 25...cd4!? 26.Bg2 Nc5=) 26.a4 (26.b6 Ba6 27.Qc2 Nb5 28.dc5 Na3+-) 26...Qf7 (26...Bb7 27.Bb7 Rb7 28.Qc4 cd4 29.Qd4+-) 27.b6 (27.Qa3 Bb7 28.Bb7 Rb7 29.dc5 Rf3+-) 27...Rf2 (27...Nd5!? 28.Ne5 Be5 29.de5 Rf2+-) 28.b7 Bb7 29.Qb7?? (better 29.Bb7 Nd5 30.Ngf4 Bf4 31.gf4 (31.Kf2?! Bc1 32.Qf3 Bb2 33.Qf7 Kf7 34.Bd5 ed5=; worse 31.Nf4 c4 32.Kf2 cb3 33.Bd5 ed5-/+) 31...Re2 32.Re2 Qf4 33.Rh3 Qc1 34.Qd1=) 29...Rb7= 30.Rb7 Nd5 31.a5?? (better 31.dc5 Re2 32.Ke2 Nc3 33.Ke3 Ne4 34.cd6 Qf2 35.Ke4 Qg2 36.Ke3 Qg3 37.Kd4 Qd6 38.Ke3 Qg3 39.Kd4 Qf2 40.Kc4 Qc2 41.Kd4 Qf2 42.Kc4 Qc2 43.Kd4 Qf2=) 31...Re2!-+ 32.Ke2 Nc3 33.Kd3 Ne4 34.Ke4 Qf5 35.Ke3 cd4 36.Kd2 (36.Kd4 Qd5 37.Ke3 Bc5 38.Ke2 Qb7-+) 36...Qf2 (better 36...Qa5!? 37.Kc2 Qc3 38.Kb1-+) 37.Kc1 d3 38.Kb1 Qc2 (better 38...Qf3!? 39.Rb8 Bb8 40.Rc1 Qb7 41.Ka2-+) 39.Ka1 Qa4 40.Kb1 (40.Kb2 Qd4 41.Kc1 Qa1 42.Kd2 Qh1-+) 40...d2 (40...Qe4 41.Rd7 Qh1 42.Kb2 Qh2 43.Ka1 Qg1 44.Ka2 Qf2 45.Ka1 Qd4 46.Kb1 d2 47.Rd8 Kf7 48.Rd7 Ke8 49.Ka2 Qc4 50.Kb2 Qc1 51.Kb3 d1Q 52.Ka2 Qdc2) 41.Rd1 (41.Kb2 Ba3 42.Kc3 Qa5 43.Kc2 Qf5 44.Kd2 Qd5 45.Kc2 Qb7-+) 41...Qe4 (41...Qd1 42.Kb2 Qc1 43.Kb3 d1Q 44.Ka2 Qa4) 42.Kb2 (42.Ka1-+) 42...Qb7 43.Kc2 Bb4 (43...Qe4 44.Kd2 Bb4 45.Kc1 Qe2 46.Rd2 Qd2 47.Kb1 Ba3 48.Ne7 Kf7 49.a6 Qb2) 44.a6 Qa6 45.Rb1 Qa2 46.Kd1 (46.Kd3 Qb1 47.Ke3 Qe1 48.Kf4 Bd6 49.Ne5 d1Q 50.g4 Be5) 46...Qb1 47.Ke2 d1Q 48.Ke3 Qbd3 49.Kf4 Q1f3 (49...Q1f3 50.Ke5 Bc3; 49...Qd4) 0–1. beatmeeasy (1860) – Longhair (1850), lichess.org, 2020.

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

3.d3 ab4 4.Nd2 d5 5.Ngf3 Bg4 6.e4 Nf6 7.Bf6 ef6 8.Be2 Na6 9.0-0 de4 10.Ne4 Bd6 11.Re1 0-0 12.Qb1? (12.Nd6 Qd6 13.Nd2 Be6-/+) 12...Qd7 (better 12...Bf3!? 13.Bf3 Be5-+) 13.Qb3 Be6 14.Qb2 Be5 (14...Be7!?-/+) 15.d4 Bf4 (15...Bd6 16.Nd6 Qd6 17.a3=+) 16.Bd3 (16.Ba6!? ba6 17.Qb4=) 16...Bd5 17.Ned2 Rfe8 18.Rab1 Bd2 19.Nd2 Qg4 20.Nf3?? (better 20.g3-/+) 20...Bf3-+ 21.Bf1 Bd5 22.Ra1 (22.a3 ba3 23.Re8 Re8 24.Qa3 Qd7-+) 22...h6 23.Qc1 (23.h3 Qf4-+) 23...Re6 (23...Re1!? 24.Qe1 Qd4 25.a3 ba3 26.Ra3-+) 24.Qd2 Rae8 25.Re3 (25.Re6 Qe6 26.a3 ba3-+) 25...Re3 26.fe3 Qg5 27.Re1 h5 28.c3 bc3 29.Qc3 h4 30.h3 Be6 (30...Ba2 31.e4 Qg3 32.Qd2-+) 31.Kh1 (31.Ba6 ba6 32.Qc6 Rd8 33.Qa6 Bh3-+) 31...Nc7 32.a3 (32.e4 Ba2 33.Qb4 b5-+) 32...Nd5 33.Qd2 Bf5 34.Bd3 (34.Qf2 Re3 35.Re3 Ne3-+) 34...Bd3 35.Qd3 Re3 36.Qf1 Re1 (36...Qf4 37.Rb1-+) 37.Qe1 Qe3 38.Qh4 (38.Qe3 Ne3 39.a4 Nf5-+) 38...Nf4 (38...g5 39.Qh5 Qe1 40.Kh2-+) 39.Qg4 (39.Kh2 Qd4 40.Qg4 Qe5-+) 39...Qd4 (better 39...Qe1 40.Kh2 Ne2 41.Qe2 Qe2-+) 40.g3 (40.Qc8 Kh7 41.Qb7 Qa1 42.Kh2-+) 40...Qa1 (40...Qe4 41.Qf3 Qf3 42.Kg1 Qg2) 41.Kh2 Ne2! 42.Qe2 (42.Qe2 Qa3 Combination) 42...Qa3 43.h4 Qd6 44.Qe8 Kh7 (44...Qf8 45.Qd7 Qa8 46.h5-+) 45.Qe4? (45.Qf7 Qb4 46.Qh5 Kg8 47.Qe8 Qf8 48.Qe3-+) 45...g6 46.Qg4 Kg7 47.Kh3 (47.Qc4 b5 48.Qc2 c5-+) 47...Qd5 (better 47...Qe6 48.Qe6 fe6-+) 48.Qf4 (48.Kh2 c5 49.Qa4 c4-+) 48...Qe5 (better 48...Qh1 49.Kg4 f5 50.Qf5 gf5 51.Kf5 Qf3 52.Ke5 Qg3 53.Ke4 Qh4 54.Kd3-+) 49.Qe5 (49.Qb4 b5 50.Kg2-+) 49...fe5 50.Kg4 e4 51.Kf4 c5 (better 51...f5 52.g4-+) 52.Ke4 b5 53.Kd3 b4 54.Kc4 Kf6 55.Kb3 (55.g4 Kg7 56.g5 f6-+) 55...Kf5 56.g4 Kg4 0–1. alessandrocarvalhaes (1850) – mboehles (1755), lichess.org, 2020.

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

3.e4 ab4!? 4.a3 ba3 5.Na3 Nf6 =+.

3.e4 d5 4.ed5= Qd5 5.Nc3 (5.ba5!? Nf6 6.Nf3=) 5...Qe5 (5...Qe6 6.Qe2 ab4 7.Ne4-/+) 6.Be2= Nf6 (6...Qg5!? 7.Nf3 Qg2=) 7.Nf3 Qc7 8.ba5 (8.b5 e5+=) 8...Bg4 (8...e5 9.0-0=) 9.h3+= Bf3 10.Bf3 e6 11.0-0 Bd6 12.Ne4 Nbd7 (12...Ne4 13.Be4 0-0 14.Bc3+=) 13.Nd6 Qd6 14.Bc3 0-0 15.d3 (15.Rb1 Rfb8+=) 15...Nd5 16.Bd5 (16.Bd2 Rfd8+=) 16...ed5 (16...cd5 17.Qg4 e5 18.Bb4+=) 17.Qf3 (17.Rb1 d4 18.Bd2 Nc5+=) 17...Qc5 (better is 17...d4!? 18.Be1 Ne5=) 18.Bg7+/– Kg7 19.Qg4 Kh8 20.Qd7 Qc2 21.Qb7 Ra5 22.Qe7 ½–½. Davis,David Neville – Paetzold,Ortwin, IECG CUP95, 1995.

3.e4 e6 4.b5 d5 5.Nc3 Nd7 (5...d4 6.Nce2 e5 7.Nf3=) 6.bc6 (6.Nf3 Bd6+=) 6...bc6 7.Qe2 (7.Nf3 Rb8 8.Rb1 Ngf6=) 7...Qb6 (7...d4 8.Na4 Ba6 9.Qd1 Bf1 10.Kf1=+) 8.Rb1= Ba6 9.d3?? (better is 9.Qd1 Bf1 10.Kf1=) 9...Bb4-+ 10.ed5? (10.Qd2 d4 11.Nge2-+) 10...Bc3 11.Bc3 Qb1 12.Kd2?! (12.Qd1 A) 12...Qa2 13.Bg7 Bd3 14.Bd3 Qd5 15.Nf3+- (15.Bh8?! Qg2 16.Qf3 Qf3 17.Nf3 Ngf6+/–); B) 12...Qd1 13.Kd1 Ndf6 14.dc6 Rc8-+) 12...cd5 13.Nf3?? Rc8 14.Ng5 Rc3 (15.Qd1 Qd1 16.Kd1 Ra3-+) 0–1. Grant – Gates, corr OUCCC, 1994.

3.h3 ab4 4.Nf3 e6 5.g4 d5 6.Bg2 Nf6 7.h4 (better 7.a3!?-/+) 7...Ng4-+ 8.Bh3 Nf6 9.h5 Nbd7 10.Nd4 Bd6 11.Bg2 e5 (11...Nb6 12.a3-+) 12.Nf5 White plans h6 12...Bf8 13.h6 g6 14.Ng7 Bg7 15.hg7 Rg8 16.Bh3 Rg7 17.Bd7 Nd7 (17...Kd7?! 18.Be5 Qe7 19.d4-+; 17...Bd7?! 18.Be5 Qe7 19.d4-+; 17...Qd7?! 18.Be5 Qf5 19.Bb2-+) 18.e3 h5 19.Qf3 Qe7 20.Qg3 Qf6 (20...Rh7 21.Qh2-+) 21.Kd1 (21.f4 Qf5 22.Kd1 f6-+) 21...Rg8 (better 21...Rh7 22.a3 ba3 23.Ra3 Ra3 24.Na3-+) 22.f4 (22.Rh5 gh5 23.Qg8 Nf8-+) 22...Qf5 (better 22...ef4!? 23.Bf6 fg3 24.Bh4-+) 23.Rf1 (23.fe5 Nc5 24.Kc1 g5-+) 23...e4 24.Rh1 Nf6 25.a3 (25.Ke1 Be6-+) 25...ba3 26.Bf6 (26.Ke1 a2 27.Na3 b5-+) 26...Qf6 27.Ra3 (27.Ra2 Bg4 28.Ke1-+) 27...Bg4 (better 27...Ra3 28.Na3 Qa1 29.Ke2 Qh1-+) 28.Kc1?? (better 28.Qg4 hg4 29.Ra8 Ke7 30.Rg8-+) 28...Ra3-+ 29.Na3 Kd7 30.c3 Ra8 31.Nc2 c5 32.Rh4 (32.f5 g5-+) 32...Qc6 (32...Qa6 33.Qe1 Qb5 34.Rg4 hg4 35.f5-+) 33.Rg4 hg4 34.Qg4 Qe6 35.Qg3 b5 36.Kd1 (36.Qg5 Ra2-+) 36...Rh8 (36...d4 37.ed4 Qb3 38.dc5-+) 37.Qg2 Qh3 38.Qe2 Qh5 39.Na3 (39.Ke1 Qh1 40.Qf1 Qf1 41.Kf1 Rh1 42.Ke2 Rc1-+) 39…Kc6 0–1. beatmeeasy (2025) – burklapa (2030), lichess.org, 2020.

(--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5).

4.c3 (--> 3.c3 Qb6 4.a3).

4.c3 ab4 5.ab4 Ra1 6.Ba1 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3).

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

4.e3 ab4 5.ab4 Ra1 6.Ba1 Qb4 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.e3 Qb4).

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5 7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.Nf3).

4.a4 b6 5.c4 (5.e4!?+-) 5...Bb7 6.e3 Nf6 (6...d6 7.Nc3+=) 7.Nf3 (7.f4 d6+=) 7...d5 (7...d6 8.Nc3=) 8.d4 (8.cd5 Qd5 9.Be5 Qe6+=) 8...dc4 (8...e6 9.cd5 ed5 10.dc5 Bc5 11.Nc3=) 9.Bc4 e6 10.0-0 Nbd7 11.Nc3 cd4 12.Nd4 Bb4 (12...Qc7 13.Nc6+=) 13.Nc6 Bc6 (13...Qc7!?+=) 14.bc6+- Nc5 (better 14...Ne5!? 15.Bb5 Qc7+-) 15.Nb5+- 0-0 (15...Qd1 16.Rfd1 (worse 16.Rad1 0-0+-) 16...Ke7 17.Be5+-) 16.c7 Qe7 17.Be5 Na6 (17...Nce4 18.Qd4+-) 18.Qf3 (18.Rc1 Rac8+-) 18...Nd7 (18...Rac8 19.Rac1+-) 19.Bg3 e5 20.Rfd1 (better 20.Qf5 g6 21.Qg4+-) 20...Kh8? (20...Nf6 21.Qb7 Nc5+-) 21.Qd5 Nac5 (21...Nf6 22.Qe5 Kg8 23.Qg5+-) 22.Nd6 f6 (22...Ne6 23.Nf7! Qf7 24.Qd7 Qd7 25.Rd7 Nc5+-) 23.Bb5 h5 (23...g6 24.Rac1+-) 24.Rac1 g5 (24...g6 25.Bc6 Rac8 26.Nc8 Rc8 27.Bd7 Rc7 28.Bb5+-) 25.h4 g4 (25...Ba3 26.Rc4 g4 27.Nf5+-) 26.Nf5 Qf7 (26...Qe6 27.Qe6 Ne6 28.Bd7+-) 27.Bd7 Qd5 28.Rd5 1–0. Adlai – Cept, corr, 2018.

4.e4 b6 5.c4 Bb7 6.d3 d6 7.a4 Nd7 (7...e5 8.Be2=) 8.Ne2 (8.Be2 e5+=) 8...Ngf6 9.g3 e5 10.Bg2 Be7 11.0-0 0-0 12.Nbc3 Re8 13.f4 Nf8 14.f5 (14.Nd5 Nd5 15.cd5 Bf6+=) 14...g6 (14...Ng4!? 15.Bc1 Bg5=) 15.fg6+= Ng6 16.Nd5 Nd5 17.ed5 Bg5 18.Be4 Be3 19.Kg2 Qd7 (19...Qg5 20.Bc1+=) 20.Bf5 Qe7 21.Nc3 White gets the initiative 21...Bd4 22.Qd2 Bc8 23.Ne4 Bf5 (better 23...Nf4! 24.gf4 Bf5 25.Bd4 ed4+=) 24.Rf5+- Bb2 25.Qb2 Kh8 (25...Rf8 26.Raf1+-) 26.Raf1 Rf8 27.Qf2 (27.h4!? Qc7+-) 27...Ra7 28.Rf6 Kg7 29.Rd6 (better 29.Nd6!? Nf4 30.Rf4 (30.gf4?! Qf6 31.Qg3 Kh8 32.fe5 Qd8+-) 30...Qd6 31.Rf6+-) 29...f5+- 30.Re6 Qd7?? (30...Qd8!? 31.Nd6 f4+-) 31.Ng5 (31.Rb6 Nf4 32.gf4 fe4+-) 31...f4? (31...Qd8 32.Qd2 Kg8 33.Rc6+-) 32.Qe2 (32.Rb6 Kh8+-) 32...h6 (32...Kg8 33.Qe4+-) 33.Qh5 hg5 (33...Rf6 34.Rf6 Kf6+-) 34.Rg6 Kf7 35.Rd6 Ke7 36.Rd7 Kd7 37.Qg4 (37.Qg4 Kd8 38.Qg5 Kc8 39.Qe5+-; better 37.Qh7 Ke8 38.Qa7 Rf7 39.Qb6 Re7+-) 1–0. BeepBeepImAJeep (2725) – imonahorse (2435), lichess.org, 2016.

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

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

4.Nf3 Nf6 5.e3 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.Bb2 Nf6 5.Nf3).

4.c4 c5 5.Nf3 (5.Nc3 Nf6=) 5...Bf5 (5...e5 6.e4=) 6.d3+= h6 (6...e5 7.e4 Be6 8.Be2+=) 7.e3 (7.e4 Bd7+=) 7...Nf6 (7...e5 8.Be2+=) 8.Be2 Nbd7 (8...e5 9.0-0+=) 9.0-0 g5 (9...e5 10.Nfd2+=) 10.Nbd2 (10.Na3 Bg7+=) 10...Bg7 11.Ne4 (11.e4 Bg6+=) 11...Rg8 (11...Be4 12.de4 Rg8 13.Qc2+=) 12.Ng3 White fights for the Initiative 12...Bg6 13.Re1 (13.Rb1 Qb6+=) 13...b6 (13...Qb6 14.Qa4+=) 14.Nd2 (14.d4 Qc7+=) 14...Ne5 (14...Qc7 15.d4+=) 15.d4 Nd3 (15...Ned7!?+/–) 16.Bd3+- Bd3 17.e4 cd4 (better is 17...d5 18.ed5 Nd5 19.cd5 Qd5+-) 18.Qb3 (18.Bd4?! Nd7 19.Bg7 Rg7+-) 18...Bc4 (18...Nd7 19.Qd3 Nc5 20.Qf3+-) 19.Qc4 (19.Nc4 Ng4+-) 19...e5 (19...Rc8 20.Qd3+- (20.Qd4?! Nh5 21.Qa4 Bb2 22.Nh5 Ba1 23.Ra1 Qc7+/–)) 20.Nf5 (20.Qc6 Kf8 21.Rac1 Bh8+-) 20...Qd7 21.Qd3 Rc8 (21...Bf8 22.Nc4 Qe6 23.Nd4 ed4 24.e5+- (24.Bd4?! Nd7+-; < 24.Qd4 Nh5+-)) 22.Nc4 Bf8 (22...Rc7 23.Nb6 (< 23.Nfd6 Kd8+-) 23...Qd8 24.Bd4 ed4 25.e5+- (< 25.Qd4 Kf8+-; 25.Nd4?! Rc5 26.Nc4 Ng4+-; 25.Ng7?! Rg7 26.Qd4 Rb7+-)) 23.Nb6 Qb7 24.Nc8 Qc8 25.Rac1 Qb7 (25...Qb8 26.Ba3+-) 26.Bd4 (26.Ba3 Kd8+-) 26...ed4 27.e5 (< 27.Qd4 Nd7 28.Qa7 Nc5+- (28...Qa7?? 29.Rc8)) 27...de5 (27...Nd5 28.ed6 Kd8+-) 28.Re5 Kd8 White now must not overlook the idea Qb6 29.Qd4 Qd7 30.Qb6 (30...Qc7 31.Qc7) 1–0. pierre (2385) – El Caballero (1940), ChessWorld.net, 2005.

4.c4 Bd7 5.e3 e5 6.Nc3 Nf6 7.d4 ed4 8.Qd4 Be7 9.Nf3 0-0 10.a3 (10.Bd3 Bg4+=) 10...Be6 (10...Re8 11.Bd3+=) 11.Be2 Nbd7 12.Na4 (12.0-0 Nc5 13.Rad1 Re8+=) 12...d5 13.cd5 Bd5 14.0-0 Bf3 15.gf3 c5 (15...Rc8 16.Rfd1=) 16.Qc3 Nb6 (16...Qc7 17.Rfd1=) 17.Nb6 (< 17.Nc5 Rc8 18.Nb7 Qd5 19.Qa5 Qb7=+) 17...Qb6 18.Bc4 (18.Rac1 Rad8=) 18...Rad8 19.Kh1 Rd6 (19...Nh5 20.Rfd1=) 20.Rg1 (20.Rfd1 Rd1 21.Rd1 Rd8 22.Rd8 Qd8+=) 20...Rfd8= 21.Qe5 Bf8 22.Rg5 (22.Qg3 Rd2 23.Bc3 Nh5+-) 22...Rd1 23.Rd1+= Rd1 24.Kg2 Qd8?? 25.Qf6+- Qf6 26.Bf6 h6 27.Rg4 Kh7 28.Be5 Rd7 29.a4 b6 30.Bc3 (30…h5 31.Rg5+-; 30.f4 f6 31.Bb2 h5+-) 1–0. Holz auf der Heide,Gerhard – Stegner,Marco, Leipzig VfB op 2nd, 1995.

4.c4 Nf6 5.e3 =.

4.e4 Nf6 =.

4.e3 b5 5.Qf3 Nf6 6.Bb5 ab4 7.cb4 Nd5 8.Bc4 Nb4 9.Qd1 d5 10.a3 dc4 (10...N4a6) 11.ab4 Ra1 12.Ba1 Na6 13.Qa4 Nb4 14.Bc3 Nd3 15.Ke2 Qd5 16.Nf3 Be7? (16...f6; 16...Nc5) 17.Bg7 Rg8 18.Nc3 Nc5 19.Nd5 Na4 20.Ne7 Ke7 21.Bd4 c5 22.Be5 f6 23.Ra1 1–0. Diener – Sterle, corr 1981.

4.e3 Nf6 5.b5 c5 6.a4 d5 7.c4 Nbd7 8.Nf3 b6 9.d3 Bb7 10.Nbd2 Be7 11.Be2 0-0 12.0-0 Re8 13.Ne5 Qc7 14.f4 Ne5 15.Be5 Qd8 16.Bf3 Bd6 17.Bb2 Rb8 18.g3 Bf8 19.Qe2 g6 20.Rad1 Bg7 21.Be5 Ra8 22.d4 cd4 23.Bd4 Nd7 24.Nb3 Bd4 25.Nd4 Nf6 26.Qg2 Rc8 27.cd5 1–0. Diener – Muster, corr 1981–82.

4.g3 Nf6 5.Bg2 ab4 6.cb4 Bb4 7.Qb3 Qe7 8.Nf3 d5 9.0-0 c5 10.a3 Ba5 11.Nc3 0-0 12.Nb5 Nc6 13.Ne5 Bd2 14.Rfd1 Ba5 15.Rac1 c4 16.Qc2 Nd7 17.Nd7 Bd7 18.e4 de4 (18...Qc5 19.ed5 Qb5 20.dc6 Bc6 21.Bc6 bc6 22.Rd4-/+) 19.Be4 g6 20.a4 Nb4 21.Qc4 Bb5 22.Qd4?? e5-+ 23.Qe5 Qe5 24.Be5 Ba4 25.Rd4 Rfe8 26.Rb4 Bb4 27.Rc4 Re5 28.Rb4 b5 29.Ba8-/+ Rc5 30.Bf3 Kg7 31.Kg2 Kf6 32.Rf4 Ke6 33.Re4 Kd6 34.Re3 b4 35.Rd3 Kc7 36.Bg4 b3 37.Rd7?? Bd7 38.Bd7 Kd7 39.Kh3 b2 40.f4 b1Q 41.g4 Qg1 42.g5 Rc3 43.Kh4 Qh2 44.Kg4 Rg3# 0–1. hgflyer – Mutterficker, Live Game Caissa's Web, 2004.

4.Qb3 Qa5 (4...e6 5.e4-/+) 5.e3 (5.a3 Qa4 6.Qb4 d6=) 5...Qa4 6.Qa4 Ra4 7.Nf3 Nf6 8.d4 e6 9.Bd3 Be7 10.0-0 0-0 11.Nbd2 c5 (better is 11...b6!?+=) 12.dc5+= Bc5 13.Ne4 (13.Ng5!? Be7 14.c5=) 13...Ne4+= 14.Be4 Nc6 15.Ng5 h6 16.Nf3 Ne7 17.Rfd1 d6 18.Nd4 Bd7 (18...f5 19.Bc2 Ra6 20.Nb3+=) 19.Bb7= Rb8 20.Be4 Rc8 21.Bc2 Raa8 22.Bb3 (22.Nb3 Ba4=) 22...Nc6 23.Nc6 Bc6+= 24.Bd4 Bd4 25.Rd4= Rd8 26.Rad1+= d5 27.cd5+- Bd5? 28.e4 Bb3 29.Rd8 Rd8 30.Rd8 Kh7 31.ab3 Kg6 32.Rb8 Kf6 33.Rb4 Ke5 34.f3 Kd6 35.Rc4 Ke5 36.b4 Kf6 37.b5 Kg6 38.b6 Kf6 39.b7 Kg6 40.b8Q Kf6 41.Qf4 Kg6 42.Rc7 f6 43.Qg4 Kh7 44.Qg7 1–0. Fournier,Frederic (1635) – deco20, Active, 2007.

4.d4?! d5! 5.Nd2 dc4! 6.Nc4 Nf6 7.Nf3 Be6 8.Nce5 Ne4 9.e3 Bd5 10.Be2 e6 11.0-0 f6! 12.Nd3 Nd7 13.Qc2 Qa5 14.Nc5 Bc5 15.dc5 Nec5. Sterle – Schuehler, corr 1981–82.

4.d4 Nf6 5.f3 d5 6.Nd2 Bf5 7.g4 (7.cd5 cd5 (< 7...Qd5 8.e4 Be4 9.Bc4 Bf3 10.Ngf3+/–) 8.g4 Bg6-/+) 7...Bg6 8.Bg2 e6 9.h4 h6 10.Nh3 Qc7 11.Nf2 Nbd7 12.e4 Nb6 (13.h5 Bh7 14.cd5 ed5-/+) -/+. Sterle – Grund,Karl, corr 1981–82.

4.Nf3 d5 5.e3 Bf5 6.d4 Bg4 7.Be2 Nf6 8.0-0 e6 9.Re1 Be7 10.Nbd2 0-0 11.Nb3 Nbd7 12.Qc2 dc4 13.Qc4 Nb6 14.Qc2 Nbd5 15.e4 Nf4 16.e5 Ne2 17.Qe2 Nd5 18.h3 Nf4 19.Qe3 Nd5 20.Qd3?? Nf4?? 21.Qe3 Nd5 22.Qd3 Nf4?? 23.Qe3= Nd5 (Better is 23...Bf3 24.Qf3 Nd5-+) ½–½. Bonetti,Shane – MacChess 5.0, 2000.

4.e3 d5 5.a3 e6 (5...ba3 6.Ba3 Na6 7.Be2+=) 6.c4 (better is 6.ab4!? Ra1 7.Ba1=) 6...bc3-/+ 7.Nc3 Nf6 8.Be2 Nbd7 9.d4 Bd6 10.–0 0-0 11.Bd3 e5 12.de5 Ne5 13.Ne5 Be5 14.Qc2 Bh2?? (better is 14...Re8-/+) 15.Kh2+= Ng4 16.Kg1 Qh4 17.Rfe1 Qh2 18.Kf1 Re8 (18...Ne5 19.Ne2 Nd3 20.Qd3 Qh1 21.Ng1-/+) 19.Ke2 (better is 19.Nd1!?+=) 19...Qg2+= 20.Bh7 Kf8 (20...Kh8 21.Kd2 Ne5=) 21.Kd1?? (21.Nd1 g6 22.Qc5 Re7 23.Qb4=) 21...Qf2 (21...g6!? 22.Kc1 Qf2 (22...Nf2 23.Nd1+/–) 23.Qf2 Nf2 24.Bg6 d4-/+) 22.Qf2+= Nf2 23.Ke2 (23.Kd2!?+=) 23...Ng4-/+ 24.Nd1 g6 25.Rf1 Bf5 (25...Ke7 26.Rf4-/+) 26.Bd4 (26.Rf5 gf5 27.Bf5 Nh6+=) 26...Ra4 27.Kd2 Rc4 (better is 27...Ne5!?-/+) 28.Rf5= gf5 29.Bf5 Nh6 30.Bd3+= Ra4 31.Bc5 Kg8= 32.Nf2 f5 33.Rb1 b5 34.Rg1 Kf7 35.Nh3 Rg4 36.Rg4 fg4-/+ 37.Ng5 Kf6 38.Nh7 Ke5 39.Ke2 Nf5-+ 40.Ng5 Rg8 41.Nf7-/+ Ke6 42.Bf5 Kf7 43.Bd7 Rg6 44.Kf2 Kg7 45.Kg3+= 1–0. Wurm,Tamas – Vermaas,Fred, IECG, 2004.

4.e4 Nf6 5.Bf6 ef6-/+ 6.Bc4 d6 7.h3 Be7 8.0-0 0-0 9.d4 d5 10.ed5 cd5 11.Bb3 Nc6 12.c3 bc3 13.Nc3 Be6 14.Re1 Bb4 15.Re2?? Bc3-+ 16.Rc1 Bb4 17.Qd3 Bd6 18.Rce1 Qd7 19.Nh4 Na5 20.Ba4 Qa4 21.Re3 Nc4 22.Re6 fe6 (23.Re6 Qa2-+) 0–1. Dazzer – touchdown, ChessWorld.net, 2005.

4.a4 d5-/+ 5.Nf3 Bf5 6.e3 e6 7.Ne5 Nf6 8.Be2 Be7 (8...Nbd7 9.Nd7 Nd7 10.d3-/+) 9.0-0 (9.g4 Bg6=+) 9...0-0-/+ 10.g4 Bg6 11.d4 b6 12.h4 (12.f4 Qc8-/+) 12...h6 13.Ng6 fg6 14.Nd2 Nh7 15.h5 gh5 16.gh5 c5 17.Nf3 Nc6 18.c4 bc3! 19.Bc3 Bd6 20.Qc2 (20.dc5 bc5 21.Kg2 Rf5-+) 20...Rf5 (20...Ng5!? 21.Nh2 cd4 22.Bb2 Bh2 23.Kh2-+) 21.dc5 bc5 22.Rfb1 (better 22.Kg2-+) 22...Ng5 (22...Rh5?! 23.Qg6 Qg5 24.Ng5 Rg5 25.Qg5 Ng5 26.Rb6=) 23.Rb7 Bc7 (23...Nf3?! 24.Bf3 Be5 25.Bg2-+; 23...Rf3 24.Qg6 Nh3 25.Kf1 Rf2 26.Ke1+-) 24.Qd1 Qd6 25.Qd2 (25.Kf1 Nf3 26.Bf3-+) 25...Rf3 26.Bf6 (26.Rc7 Qc7 27.Qb2 Nh3 28.Kf1 Rf2 29.Ke1-+) 26…Qh2 (26...Qh2 27.Kf1 Qf2) 0–1. Tiedemann,Joern (2125) – Walter,Mario (2050), RSX9E – A00 – Sokolsky–2, 2004.

4.ab4 Qb6?? 5.Ra8+- Qc7 6.Nf3 Nf6 7.c4 e6 8.c5 (8.Be5 d6 9.Bf6 gf6+-) 8...Na6 (8...d6 9.Qa4 Nfd7 10.Qa5 Qa5 11.ba5+-) 9.Be5 d6 (9...Qd8 10.Qa4 d6 11.cd6+-) 10.cd6 Bd6 (10...Qd7 11.b5! Nb4 12.Nc3+-) 11.Bd6 Qd6 (11...Qd8+-) 12.Rc8 (12.Rc8 Kd7 13.Rh8 Nb4 14.d4+-) 1-0. ClayPigeons (2190) - SanderHyeEhmsen (2200), Rated Bullet game, lichess.org, 2020.

4.e4 Qb6 A) 5.Nf3 Nf6 (5...Na6 6.ab4 Qb4 7.Qc1 Qe4 8.Be2 d6 9.Nc3 Qg6 10.0-0) 6.Bd4 Qc7 7.ab4 Ra1 8.Ba1 Ne4 9.Bd4 f6 10.Nc3; B) 5.Bd3 B1) 5...Nf6 6.e5 (6.Ne2 ba3 7.Ba3 Na6 8.Nbc3 Nb4 9.Bb4 Ra1 10.Qa1; 6.Nf3 ba3 7.Ba3 Na6 8.Nc3 h5 9.e5 Ng4 10.0-0) 6...Nd5 7.Nf3 Nf4 8.0-0 c5 9.ab4 Ra1 10.Ba1; B2) 5...d5 6.ed5 (6.e5 c5 7.ab4 Ra1 8.Ba1 c4 9.Be2 Nc6 10.Nf3; 6.Nf3 de4 7.Be4 Nf6 8.Bd3 Nbd7 9.Bd4 c5 10.ab4) 6...Nf6 7.dc6 Ng4 8.Nh3 Nc6 9.0-0 Nce5 10.Be2; C) 5.ab4 Ra1 6.Ba1 Qb4 7.Bd3 Nf6 8.Bc3 Qb6 9.Nf3 Na6 10.0-0.

4.e4 d5!?=+ A) 5.ed5 A1) 5...cd5 6.Bd3 (6.ab4 Ra1 7.Ba1 Nc6 8.Nf3 Nf6 9.Be2 Bf5 10.0-0; 6.Nf3 Nf6 7.Bd3 Nc6 8.0-0 Bd7 9.h3 e6 10.Qe2; 6.Bb5 Bd7 7.Bd7 Nd7 8.Nf3 e5 9.0-0 e4 10.Re1; 6.c3 Nc6 7.cb4 Nf6 8.Nf3 Bf5 9.Nc3 g6 10.Bb5; 6.Ne2 Nc6 7.ab4 Ra1 8.Ba1 Nf6 9.Nd4 Qb6 10.Bb5) 6...Nc6 7.Nf3 Nf6 8.0-0 Bd7 9.Re1 e6 10.c3; A2) 5...Qd5 6.ab4 (6.Nf3 Nf6 7.ab4 Qe4 8.Be2 Ra1 9.Ba1 Bf5 10.d3) 6...Ra1 7.Ba1 Na6 8.Nc3 Qe6 9.Be2 Nb4 10.Qb1; A3) 5...Nf6 6.dc6 Nc6 7.Nf3 Qd5 8.Be2 Bf5 9.0-0 e5 10.Re1; B) 5.Nf3 de4 6.Ne5 Nd7 7.ab4 Ra1 8.Ba1 Ngf6 9.Na3 e6 10.Nd7; C) 5.e5 Nh6 6.ab4 (6.Nf3 e6 7.Bd3 Nd7 8.ab4 Ra1 9.Ba1 Bb4 10.Bc3) 6...Ra1 7.Ba1 e6 8.b5 Bc5 9.Nf3 0-0 10.d4.

4.e4 Nf6 A) 5.e5 Nd5 6.ab4 (6.c4 bc3 7.Nc3 Nc3 8.Bc3 d6 9.Nf3 de5 10.Ne5; 6.Nf3 d6 7.ab4 Ra1 8.Ba1 Nb4 9.Na3 de5 10.Be5) 6...Ra1 7.Ba1 Na6 8.Ba6 ba6 9.Nc3 Nb4 10.Nf3; B) 5.Nf3 B1) 5...ba3 6.e5 (6.Ba3 Ne4 7.Bd3 Nc5 8.0-0 d6 9.Nc3 Nd3 10.cd3; 6.Na3 Ne4 7.Nc4 Ra1 8.Qa1 f6 9.d3 Nc5 10.Be2) 6...Qb6 7.Ba3 Ne4 8.Qe2 d5 9.ed6 Nd6 10.Nc3; B2) 5...Ne4 6.ab4 Ra1 7.Ba1 Qb6 8.Bd4 Qb4 9.Nc3 c5 10.Nd5; C) 5.ab4 Ra1 6.Ba1 Ne4 7.Bd3 d5 8.Nc3 Nd6 9.Nf3 Qb6 10.0-0.

4.Nf3 Nf6 5.e3 d5 6.c4 e6 7.Qc2 ba3 8.Na3 Be7 9.Be2 0-0 10.0-0 Nbd7 11.Ra2 (11.d4 b6=+) 11...Nb6 (11...dc4 12.Qc4 e5 13.Rfa1-/+) 12.Rfa1 (12.Ng5 Ne4 13.Ne4 de4=) 12...dc4 13.Nc4 Ra2 14.Ra2 Nc4 15.Bc4 b5 (15...Nd5 16.Ra8=) 16.Be2 (16.Bd3 h6=+) 16...Bb7 (16...Qd5 17.Bf6 Bf6 18.d4=) 17.Ra7 (17.Bf6!? Bf6 18.d4=) 17...Qb6=+ 18.Ra1 Ra8 (18...c5 19.Ng5 g6 20.d3=+) 19.Ra8 Ba8 20.Ng5 g6 (20...Qc5 21.Qc5 Bc5 22.Bf6 gf6 23.Ne4-/+) 21.Qc3 (21.d4 Nd7 22.Ne4 Bb7=) 21...b4 (21...c5 22.d3-/+) 22.Qe5=+ c5 23.Bc4 (23.d3 Qd8=+) 23...Qd8 24.Be6 fe6 25.Qe6 Kh8?? (25...Kg7 26.Qf7 Kh6+=) 26.Nf7+- Kg7 27.Nd8 Bd8 28.Qc8 (28…Kh6 29.Qd8+-) 1–0. Heinzel,Mark – Weinrich,Bernd, Augsburg op 2nd, 1995.

5.Ba1 b5 6.e3 Qc7 (6...Na6 7.c3=) 7.Nf3 Qd6?? (better 7...Na6=) 8.Be5+- Qb4 9.c3 (better 9.Bb8 Nf6 10.Bd3+-) 9...Qc5+- 10.Bb8 e6? (better 10...d6+-) 11.d4+- Qb6 Black prepares the advance b4 12.Bf4 Nf6 13.Bd3 Nd5 Black intends b4 14.Bg3 b4 (14...Qa5 15.Qb3+-) 15.c4 Nc3 (15...Nf6 16.c5 Qa5 17.Qb3+-) 16.Qb3 (16.Nc3 bc3 17.c5 Qa5+-) 16...Qa5 (16...Nb1 17.c5 Qa5 18.Qb1+-) 17.0-0 (17.Nc3 bc3 18.0-0 c5+-) 17...Be7 (17...Qa4 18.Qb2 Qa2 19.Qa2 Na2+-) 18.Nc3 bc3 19.Qc2 (19.c5 Ba6 20.Ba6 Qa6 21.Qc3 0-0+-) 19...g6 (19...d6 20.Rc1+-) 20.c5 0-0 (20...f6 21.Rc1+-) 21.Rc1 (21.Ne5 Ba6+-) 21...Ba6 22.Qc3 (22.Ba6 Qa6 23.Ne5 Rd8+-) 22...Qc3 23.Rc3 Bd3 24.Rd3 Ra8 25.Rd1 (25.Kf1 f5+-) 25...Bd8 (25...f6 26.Kf1+-) 26.Ne5 (26.Rb1 Kg7+-) 26...Ra7 27.Rb1 f6 (27...Kg7 28.Nc4+-) 28.Nc4 Kf7 (28...Be7 29.Bb8 Ra8 30.Bd6+-) 29.f3 (29.Nd6 Kf8+-) 29...Be7 30.h3 (30.Bb8 Ra4 31.Nd6 Bd6 32.Bd6 Ra7+-) 30...h5 (30...e5 31.Kh2+-) 31.Bb8 (31.Bd6 h4+-) 31...Ra4 32.Nd6 Bd6 33.Bd6 Ra3 (33...g5 34.Rb7 Ke8 35.g4 Ra1 36.Kf2 Ra2 37.Ke1 hg4 38.hg4+-) 34.Rb7 Ke8 35.Kf2 Ra2 (35...g5 36.f4+-) 36.Kg3 f5 (36...Ra3 37.e4+-) 37.f4 Ra3 (37...Re2 38.Rb8 Kf7 39.Rf8 Kg7 40.Rd8 Re3 41.Kh4+-) 38.Kf3 (better 38.Kh4!? Re3 39.Kg5 Ra3+-) 38...Ra8 39.Be5 (39.g4 hg4 40.hg4 Kd8+-) 39...Rc8 (39...Ra2 40.Rb8 Kf7 41.Rh8+-) 40.Ra7 (40.Kg3 Ra8 41.Kh4 Kd8+-) 40...Ke7 (40...Rd8 41.g4+-) 41.h4 (41.g4 Rd8+-) 41...Ke8 (41...Rd8 42.e4+-) 42.e4 Ke7 (42...Rd8 43.Bc7 Rc8 44.Bd6+-) 43.Ke3 fe4 (43...Rd8 44.d5! ed5 45.ed5+-) 44.Ke4 Ke8 45.Bd6 1–0. Wall,Bill – Vaherb, internet, 1999.

5.Ba1 b5 6.e4 Qb6 7.Nf3 Nf6 8.Bd4 (8.e5 Nd5 9.Bd4 Qd8+=) 8...Qb7 (9.Nc3 d6=). pcmvr (2390) – bumeyou (2200), net–chess.com, 2006.

5.Ba1 b5 6.e4 d6 (6...Na6 7.c3=+) 7.d4 (7.Nc3 Nf6=) 7...h6 (7...Na6 8.c3=) 8.d5 Bd7 9.c4 bc4 10.Bc4 cd5 (10...Nf6 11.Qd3=) 11.ed5+= Nf6 12.Nf3 g5 (12...e5 13.de6 fe6 14.Bd3+=) 13.Nd4 (better 13.Bf6 ef6 14.0-0+-) 13...e6?? (better 13...Qb6 14.b5 Bg4+-) 14.de6+- fe6 15.Ne6 Be6 16.Be6 Qe7 (16...d5 17.0-0 Bb4 18.Nc3+-) 17.0-0 Qe6 (17...Bg7+-) 18.Re1 Ne4 19.Bh8 Nd7 (19...Be7 20.f3 d5 21.fe4 Bb4 22.Nc3 Qb6 23.Kh1 Bc3 24.Bc3+-) 20.Nc3 d5 (20...Ne5 21.Ne4 Kf7 22.b5+-) 21.Nd5 Kf7 (21...Qf5 22.Qd4 Kf7 23.Re4+-) 22.Qd3 Ndf6 23.Nf6 Bg7 24.Bg7 Kg7 25.Ne4 Qf7 26.Qd4 Kg8 (26...Kg6 27.Nd6 Qf4 28.Qd3 Kh5 29.Qh3 Qh4 30.g4 Kg6 31.Qd3 Kg7 32.Nf5 Kg8 33.Qd8 Kf7 34.Qe7 Kg6 35.Re6) 27.Nf6 Kg7 (27...Kf8 28.Nh5! Qh5 29.Qh8 Kf7 30.Qe8 Kf6 31.Qe7 Kg6 32.Re6 Kf5 33.Qf6 Kg4 34.Re4) 28.Nh5 Kg8 (28...Kh7 29.g4 Kg8 30.Re8 Kh7 31.Rh8 Kg6 32.Qe4 Qf5 33.Qf5) 29.Qd8 (29.Re8 Kh7 30.Qd3 Qg6 31.Qd7 Qf7 32.Qf7) 29...Kh7 30.Re7 Qe7 (30...Kg6 31.Qd6 Kh5 32.Rf7 Kg4 33.h3 Kh5 34.Rh7 Kh4 35.Rh6) 31.Qe7 Kg6 32.Qe6 Kh5 (32...Kh7 33.Qf6 Kg8 34.Qg7) 33.f3 Kh4 34.Qh3 (34.Qh6) 1–0. rcm06 (2145) – mister_mxyzptlk, gameknot.com, 2018.

5.Ba1 b5 6.e4 e6 (6...Na6=+) 7.d3 (better 7.Nf3=) 7...c5?? (7...Bb4 8.Nd2 Nf6 9.Ngf3-/+) 8.c3?? (better 8.bc5 Nf6 9.e5+=) 8...cb4-/+ 9.cb4 (9.Nd2 Qc7 10.cb4 Nf6-/+) 9...Nf6 (9...Bb4 10.Nd2 Nf6 11.Be2-/+) 10.Be2 (10.Qb3 Nc6 11.Bc3 Be7=+) 10...Bb4 11.Bc3 (11.Nd2 Nc6-/+) 11...Be7 (11...Bc3!? 12.Nc3 b4 13.Na4-+) 12.Nf3-/+ 0-0 13.0-0 Qc7 14.e5 (14.Qb3!?-/+) 14...Nd5-+ 15.Bd2 (15.Bb2 Bb7-+) 15...Bb7 (15...b4 16.d4-+) 16.d4 f6 (better 16...b4-+) 17.Nc3?? (better 17.Bb5 Nc6 18.Qe2=+) 17...Nc3-+ 18.Bc3 fe5 (better 18...Qc3 19.Bb5 Bf3 20.Qf3 Qd4 21.ef6 Rf6 22.Qe3-+) 19.de5?? (19.Qd2 Bf3 20.Bf3 ed4 21.Bd4-+ (21.Qd4?? Bf6 22.Qd3 Qc3 23.Qb5 Bd4-+)) 19...d6 (better 19...Qc3 20.Qb1 Bf3 21.Bf3 Qe5-+) 20.Bb5?? (20.Qd2 Nd7 21.Rc1 Nc5=) 20...de5?? (better 20...Qc3 21.ed6 Bf6-+) 21.Be5= Bd6?? (better 21...Qc5 22.Qb3 Bd5+=) 22.Bd6+- Bf3 23.gf3 Qb7 (23...Qd8 24.Bf8 Qg5 25.Kh1 Qb5 26.Bg7 Kg7 27.Rg1 Kf7 28.Qc2+-) 24.Bf8 Qb5 25.Qd8 Nd7 (25...Nc6 26.Qe8 Nd4 27.Qb5 Nb5+-) 26.Bd6 Kf7 27.Qe7 Kg6 28.Qe6 (28.Qe8 Kh6 29.Bf4 g5 30.Qe6 Kg7 31.Be3 Qd5 32.Qd5 Nf6 33.Bd4 Kg6 34.Bf6 h6 35.Qg8 Kf6 36.Re1 h5 37.Re6 Kf5 38.Qf7) 28…Nf6 1–0. Nautiluschess – PolishDefender, ICS blitz, 2001.

5.Ba1 b5 6.Nf3 d6 7.e4 e5 8.d4 ed4 9.Bd4 Nf6 10.Bd3 Bg4 11.0-0 Nbd7 12.h3 Be6 13.Ng5 Qe7 14.f4 Ba2 15.Nd2 h6 16.Ngf3 Qd8 17.Qa1 Be6 18.f5 Bc4 19.Nc4 bc4 20.Bc4 Be7 21.Qa4 Qc7 22.Qa5 Qa5 23.ba5 0-0 24.Bd3 c5 25.Bb2 Rb8 26.Ba1 Rb7 27.a6 Ra7 28.Rb1 c4 29.Bc4 Ne4 30.Re1 Ndc5 31.Bd4 Ng3 32.Bc5 dc5 33.Ne5 Bf8 34.Nf7 Rf7 35.a7 (35...Nf5 36.a8Q+-) 1–0. miehnekort – NN, Yahoo, 2005.

5.Ba1 d6 6.e3 e5 7.Nf3 g6 8.d4 (8.Ne5 de5 9.Be5 Nf6 10.Bb8 Bg4+-) 8...Bg7 (8...f6 9.de5 de5 10.Qd8 Kd8 11.Ne5 Bb4 12.c3 fe5 13.cb4+=) 9.de5 de5? (better 9...Bg4+=) 10.Qd8+- Kd8 11.Ne5 Be5?? (better 11...Ke8 12.Bc4 Nh6 13.Nf7 Ba1 14.Nh6 Rf8+-) 12.Be5 f6 13.Bb8 Ne7 (13...Bf5 14.Kd2+-) 14.Nc3 Nd5 (14...Re8 15.Kd2+-) 15.Nd5 cd5 16.Ba7 (16.Bd3 Ke7 17.Ba7 Bd7+-) 16...Bf5 17.Kd2 Kc7 (17...Ke7 18.Bc5 Ke6 19.f3+-) 18.Bd4 Rf8 19.Be2 (19.Bb5 g5+-) 19...Kc6 (19...h6 20.g4 Be6 21.h4+-) 20.Ra1 (20.g4 Be6+-) 20...Rb8 (20...Be4 21.f3 Bf5 22.c4 dc4 23.Bc4+-) 21.Bf6 Be4 (21...Rf8 22.Be5+-) 22.f3 Bf5 23.Ra5 (23.c4 dc4 24.Bc4 Kd6+-) 23...b6 (23...Rc8 24.g4 Be6 25.e4 de4 26.fe4+-) 24.Ra7 h5 (24...b5+-) 25.Be5 Rc8 26.Ba6 1–0. michaelbuss (2810) – MichaelOehley (1710), ChessWorld.net, 2013.

6.b5 Qa5 7.Nc3+= cb5 8.e4 b4 9.Nd5 e6 (9...Nc5 10.f3=) 10.Ne3 Nf6 (10...Nc5 11.e5=) 11.Bf6 (11.e5 Nd5=) 11...gf6 12.Nc4 (12.Ne2 d6=) 12...Qc7 (12...Qd8 13.Nf3=) 13.Qf3 (13.d4 d5 14.ed5 ed5=) 13...Bg7 14.Qg3 (14.Qg4 Rg8=) 14...0-0 (14...Qg3 15.hg3 (< 15.fg3 Nc5-/+) 15...Ke7 16.Nb6=) 15.Qc7 Nc7 16.Nd6 Rd8 17.Nf3 (17.d4 Ne8 18.Ne8 Re8=+) 17...Bf8 18.Nb5 (18.Nc8 Rc8 19.Bd3 Bc5=) 18...Nb5=+ 19.Bb5 b6 (19...d5 20.d3=+) 20.e5 (20.d4!?=) 20...fe5-/+ 21.Ne5 Bg7 22.Nd3 Bb7 23.0-0 Bf8 24.Ra1 Be4 25.Kf1 d5 26.f3 Bg6 27.Ke2 Rc8 28.Kd1 Bd6 29.g3 h5 30.Ra6-/+ Bd3 31.Bd3=+ Bc5 32.Ke2 Kg7 33.f4 f6 34.Kf3 Bd4 35.Ra4 Bc5 (35...e5 36.Ra7 Kf8 37.fe5 fe5-/+) ½–½. Benussi,A – Welti,Manfred, corr SOK–96–118, 1997.

6.b5 Qa5 7.Nc3 Nc7 +=.

6.b5 Nc7 7.bc6 dc6 8.Nf3 =.

6.c3 b5 7.Nf3 A) 7...d6 8.e4 (8.Qc2 Nf6 9.e4 Bg4 10.Be2 e5 11.d4=; 8.d4 Nf6 9.Na3 e6 10.e3 Be7 11.Bd3=; 8.d3 Bg4 9.Nbd2 e5 10.h3 Bf3 11.Nf3=; 8.Na3 Nf6 9.Nc2 e5 10.d3 Be7 11.e4=+) 8...Nf6 9.e5 Ng4 10.ed6 ed6 11.Be2=; B) 7...d5 8.d3 (8.h3 Nf6 9.e3 Qc7 10.d4 Bf5 11.Na3=; 8.Bb2 Nf6 9.e3 Qd6 10.d4 Bf5 11.Nbd2=; 8.Na3 Nf6 9.e3 Qd6 10.Be2 e5 11.0-0=+; 8.e3 e6 9.Na3 Nf6 10.Be2 Bd6 11.0-0=) 8...Nf6 9.Nbd2 Bf5 10.Qc2 c5 11.e4=; C) 7...Nc7 8.d3 (8.e4 d5 9.e5 Bg4 10.Be2 Ne6 11.h3=; 8.e3 d6 9.c4 e5 10.cb5 Nb5 11.Bb5=; 8.Na3 Nf6 9.e3 d6 10.d4 e6 11.Bd3=; 8.d4 d5 9.Nbd2 Nf6 10.Ne5 Qd6 11.e3=) 8...Bb7 9.Nbd2 e6 10.e4 d5 11.e5+=; D) 7...Nf6 8.Qc2 (8.d3 d6 9.Nbd2 Qc7 10.e3 e6 11.Ne4=; 8.g3 d5 9.Bg2 Qd6 10.0-0 e5 11.d4=+; 8.e3 d6 9.d4 Bg4 10.Na3 Qa8 11.h3=; 8.Na3 d6 9.e3 e5 10.Be2 Be7 11.0-0=+) 8...d6 9.e4 e5 10.d4 Qc7 11.Nbd2=.

6.c3 Qb6 7.Nf3 d5 8.e3 Nf6 9.Be2 Bg4 10.–0 e6 11.Na3 Bd6 12.Nc2 e5 13.d3 0-0 14.h3 Bh5 15.Nh2 Be2 16.Qe2 e4 17.Nd4 Qc7 18.g3 ed3 19.Qd3 Ne4 20.Nf5 Be5 21.Nf3 Ra8 22.Ne5 Qe5 23.Nh4 Nb4 24.cb4 (better is 24.Qb1!? Na2 25.Qb7+=) 24...Ra1-+ 25.Nf3 Rf1 26.Qf1 Qc3 27.Qb1 Ng3 (better is 27...h6 28.Kg2 b6-/+) 28.Ng5?? (28.Qa2 h6 29.fg3 Qe3 30.Kg2 Qe4+=) 28...Ne4 29.Ne4 de4 30.Qe4 Kf8 31.Kg2 Qf6 32.Qg4 Qg6 33.Qg6 hg6 (33...fg6?! 34.f4=) 34.Kf3 Ke7 35.Ke4 Ke6 36.h4 b6 37.Kd4 Kd6 38.f3 f5 39.e4 c5 40.bc5 bc5 41.Kc4? fe4 42.fe4 Ke5 43.Kc5 Ke4 44.Kc4 Kf4 45.Kd4 Kg4 46.Ke3 Kh4 47.Kf2 Kh3 48.Kg1 Kg3 49.Kh1 Kf2 50.Kh2 g5 51.Kh1 g4 52.Kh2 g3 0–1. Hal1958 – Kali, playchess.de, 2004.

6.c3 Nc7 7.Na3 g6 8.c4 Nf6 9.e3 Bg7 10.Nf3 0-0 11.Be2 d5 12.c5 Bg4 13.0-0 Bf3 14.Bf3 Nd7 15.Bg7 Kg7 16.Nc2 e5 17.d3 f5 18.Qa1 Qa8 19.Rb1 Nb5 20.Qb2 Qb8 21.Ra1 Qc7 22.g3 Nf6 23.Na3 Na3 24.Ra3 e4 25.de4 de4 26.Be2+= Rd8 27.Bc4 Qd7 28.Ra7 Qd1 29.Bf1 Rd7 30.b5 Kf7 31.bc6 bc6 32.Rd7 Qd7 33.Qd4 Ke7 34.Bc4 Qd4 35.ed4 Nd7 36.Kf1 Nf6 37.h3 Kd7 38.Ke2 Kc7 39.Ke3 g5 40.Be6 f4? 41.gf4+- gf4 42.Kf4 Kb7 43.Ke5 Nh5 44.Ke4 Ka6 45.Ke5 Kb5 46.Kd6 Nf4 47.f3 Nd3 48.h4 1–0. Fournier,Frederic (1880) – Katakrov (1820), Active (5/1), 2005.

6.c3 d6 7.b5 A) 7...cb5 8.e3 (8.Nf3 b4 9.e3 bc3 10.Nc3 Nf6 11.d4=+; 8.e4 Qa5 9.Bb2 Nf6 10.d3 b4 11.c4=+; 8.Bb2 b4 9.e3 bc3 10.Nc3 Nf6 11.Nf3=+; 8.Qc2 Nf6 9.e3 Bd7 10.Be2 e5 11.Nf3=+) 8...Qa5 9.Bb2 e5 10.Nf3 b4 11.Qc2=+; B) 7...Qa5 8.ba6 Qa1 9.ab7 Bb7 10.Nf3 e5 11.e4=; C) 7...Nb8 8.c4 (8.e3 e5 9.c4 cb5 10.cb5 Be7 11.Ne2=; 8.Bb2 e5 9.d4 ed4 10.Qd4 Nf6 11.Nf3=; 8.d4 Qa5 9.Nd2 Qb5 10.e4 Qa5 11.Ngf3=+; 8.e4 Nf6 9.Qc2 e5 10.c4 Qc7 11.Nc3=) 8...Bf5 9.e3 cb5 10.cb5 e5 11.d4=; D) 7...Nc7 8.bc6 (8.e4 Nf6 9.Nf3 Ne4 10.bc6 bc6 11.Qa4=+; 8.e3 Nb5 9.Bb5 cb5 10.Nf3 e5 11.d3=+; 8.Na3 e5 9.Nf3 d5 10.bc6 bc6 11.Bb2=+) 8...bc6 9.c4 e5 10.d4 e4 11.Nc3=+.

6.c3 d6 7.d4 A) 7...Bf5 8.Nf3 (8.e3 Nf6 9.Ne2 e6 10.Ng3 Bg6 11.Nd2=; 8.Na3 d5 9.e3 e6 10.Bb2 Bd6 11.Nf3=+; 8.Nd2 Nf6 9.e3 b5 10.Ngf3 e6 11.Be2=; 8.b5 Nc7 9.bc6 bc6 10.Nf3 Nf6 11.Nh4=) 8...e6 9.Nbd2 Nf6 10.Nh4 Be4 11.e3=; B) 7...d5 8.Qc2 (8.Nf3 Bf5 9.e3 e6 10.b5 Nb8 11.Be2=; 8.e3 Bf5 9.Nf3 e6 10.b5 Nb8 11.Be2=; 8.Qd3 Nf6 9.Nd2 g6 10.e4 Bh6 11.f3=; 8.Nd2 Bf5 9.Ngf3 e6 10.Ne5 Nf6 11.e3=) 8...Nc7 9.Nd2 Nf6 10.Ngf3 g6 11.e4=; C) 7...e5 8.e4 (8.de5 de5 9.Qd8 Kd8 10.Nf3 Bd6 11.Nbd2=; 8.e3 Nf6 9.b5 Nc7 10.de5 de5 11.Qd8=; 8.b5 cb5 9.e4 Nc7 10.Nf3 f5 11.de5=; 8.Bb2 Nf6 9.de5 de5 10.Qd8 Kd8 11.Nd2=+) 8...ed4 9.Qd4 Qe7 10.Nd2 d5 11.Ngf3=; D) 7...b5 8.Qc2 (8.Nd2 Nf6 9.e4 Bg4 10.f3 Bd7 11.Bd3=; 8.e3 Nf6 9.Nf3 Bf5 10.Na3 Qd7 11.c4=; 8.e4 Nf6 9.Nd2 Bg4 10.f3 Bd7 11.Bd3=; 8.Nf3 Nf6 9.e3 Bg4 10.Na3 Qa8 11.h3=) 8...e6 9.Nf3 Ne7 10.e4 Ng6 11.d5+=; E) 7...Nf6 8.Nf3 (8.Qc2 e5 9.de5 de5 10.e4 Bd6 11.Ba6=+; 8.e3 Bf5 9.Ne2 e6 10.Ng3 Bg6 11.h4=) 8...Bf5 9.e3 e6 10.Nbd2 b5 11.Be2=.

6.c3 d6 7.e3 A) 7...Nf6 8.d4 (8.b5 Nc7 9.c4 e5 10.Nf3 Be7 11.Be2=+; 8.Nf3 e5 9.Be2 e4 10.Nd4 c5 11.Nb3=; 8.Be2 b5 9.f4 e5 10.Nf3 ef4 11.ef4=+; 8.Ba6 ba6 9.Nf3 e5 10.d3 a5 11.0-0=+) 8...Bf5 9.Nf3 e6 10.Be2 Be7 11.0-0=; B) 7...b5 8.d4 (8.Nf3 e5 9.Be2 Nf6 10.Bb2 Be7 11.0-0=; 8.Be2 e5 9.d3 Nf6 10.Nf3 Be7 11.0-0=; 8.d3 Nf6 9.Be2 e5 10.Nf3 Be7 11.0-0=; 8.Qf3 d5 9.d3 e5 10.Qg3 Qf6 11.Nf3=+) 8...Nf6 9.Nf3 Bf5 10.Bd3 Bd3 11.Qd3=; C) 7...Bf5 8.d3 (8.Be2 Nf6 9.Nf3 e5 10.0-0 Be7 11.d3=; 8.Ba6 ba6 9.d3 e5 10.Nf3 a5 11.e4=; 8.b5 Nc7 9.c4 e5 10.d4 Nf6 11.Be2=; 8.Nf3 e5 9.Be2 Nf6 10.0-0 Be7 11.d3=) 8...e5 9.e4 Bd7 10.Nf3 Nf6 11.Nbd2=; D) 7...Bd7 8.d4 (8.Nf3 e5 9.d3 Nf6 10.Be2 Be7 11.0-0=+; 8.Be2 e5 9.d4 e4 10.d5 Nc7 11.dc6=; 8.Bb2 e5 9.d4 ed4 10.Qd4 Nf6 11.Nf3=; 8.Ne2 e5 9.d4 Nf6 10.de5 de5 11.Ng3=+) 8...Nf6 9.Nf3 d5 10.Nbd2 e6 11.Bd3=; E) 7...e5 8.d4 (8.b5 Nc7 9.c4 Nf6 10.Nf3 Be7 11.Be2=+; 8.Nf3 b5 9.Be2 Nf6 10.Na3 Be7 11.0-0=+; 8.Be2 Qg5 9.Bf1 Qg6 10.d4 ed4 11.ed4=+; 8.d3 Nf6 9.Nf3 Be7 10.Be2 0-0 11.0-0=) 8...Nf6 9.b5 Nc7 10.de5 de5 11.Qd8=.

6.c3 d6 7.e4 A) 7...e5 8.Qc2 (8.Nf3 Nf6 9.Qe2 Bg4 10.h3 Bh5 11.g4=+; 8.Ba6 ba6 9.Nf3 Nf6 10.Qa4 Qb6 11.d3=; 8.d4 Nf6 9.de5 de5 10.Nd2 Bd6 11.Ba6=; 8.Be2 d5 9.Qa4 b5 10.Qc2 Nf6 11.d3=+) 8...d5 9.Nf3 Nf6 10.Ne5 Ne4 11.Ba6=; B) 7...b5 8.Qb3 (8.Nf3 Nf6 9.e5 Ng4 10.ed6 ed6 11.Be2=; 8.c4 bc4 9.Bc4 Nb4 10.Qb3 d5 11.Qb4=; 8.d4 Nf6 9.Nd2 e6 10.Ngf3 Be7 11.Qc2=; 8.Qc2 e5 9.Nf3 Bg4 10.Be2 Nf6 11.d4=) 8...Nf6 9.c4 Be6 10.Qa3 Nc7 11.cb5=; C) 7...d5 8.e5 (8.ed5 Qd5 9.d4 e5 10.Qe2 Bf5 11.Nd2=; 8.Ba6 ba6 9.Qa4 Qd6 10.d3 de4 11.de4=; 8.d3 e5 9.ed5 cd5 10.Nf3 Bd6 11.d4=) 8...b5 9.Nf3 Qc7 10.Be2 f6 11.d4+=; D) 7...Qb6 8.d4 (8.Nf3 Nf6 9.e5 de5 10.Ne5 Bf5 11.d4=; 8.Qc2 e5 9.Nf3 Bg4 10.Be2 Nf6 11.0-0=; 8.Be2 Nf6 9.d3 e5 10.Nf3 Be7 11.Nbd2=; 8.d3 e5 9.Nf3 Nf6 10.Nbd2 Be7 11.d4=) 8...Nf6 9.Nd2 Bg4 10.Ngf3 d5 11.Bd3+=; E) 7...Nf6 8.Ba6 (8.Qc2 e5 9.Nf3 Bg4 10.Be2 d5 11.h3=+) 8...ba6 9.d3 e5 10.Nf3 a5 11.Qa4=.

6.c3 d6 7.Nf3 A) 7...e5 8.e4 (8.Qc2 Nf6 9.e4 Bg4 10.Be2 d5 11.h3=+; 8.e3 b5 9.Be2 Nf6 10.Na3 Be7 11.0-0=+; 8.b5 cb5 9.e4 Qa5 10.Bb2 Nc5 11.d4=) 8...Nf6 9.Ba6 ba6 10.d3 Be7 11.Nbd2=; B) 7...b5 8.e4 (8.Na3 Nf6 9.e3 e5 10.Be2 Be7 11.0-0=+; 8.d4 Nf6 9.e3 Bg4 10.Na3 Qa8 11.h3=; 8.Qc2 Nf6 9.e4 Qc7 10.Na3 Bd7 11.Be2=; 8.d3 e5 9.e4 Nf6 10.Nbd2 Be7 11.d4=) 8...Nf6 9.e5 de5 10.Ne5 Qd6 11.d4=; C) 7...Bg4 8.b5 (8.h3 Bf3 9.ef3 Nf6 10.b5 Nc7 11.Qa4=; 8.e4 Nf6 9.Ba6 ba6 10.h3 Bf3 11.Qf3=; 8.d3 e5 9.e4 Bf3 10.Qf3 Qa8 11.Bb2=+; 8.Qc2 Nf6 9.h3 Bf3 10.ef3 e6 11.b5=) 8...Nc7 9.h3 Bf3 10.ef3 Nb5 11.Bb5=; D) 7...d5 8.Bb2 (8.b5 cb5 9.e3 Qa5 10.Bb2 b4 11.c4=; 8.e3 Nf6 9.Ba6 ba6 10.d3 Bf5 11.0-0=; 8.Qc2 Nf6 9.e3 Nc7 10.d3 Bg4 11.Ne5=; 8.Na3 Nf6 9.e3 Qd6 10.Qa4 e5 11.Ba6=) 8...Qc7 9.e3 e5 10.b5 e4 11.ba6=; E) 7...Nf6 8.d4 (8.e3 e5 9.Be2 e4 10.Nd4 c5 11.Nc2=+; 8.b5 cb5 9.e3 Qa5 10.Bb2 e5 11.Be2=+; 8.Qc2 e5 9.e4 Bg4 10.Be2 d5 11.h3=+; 8.d3 e5 9.e4 Be7 10.Nbd2 Bg4 11.Be2=) 8...b5 9.e3 Bf5 10.Na3 Qb6 11.Bd3=.

6.Bc3 b5 7.e3 e6 8.Nf3 Nb4 9.Be2 Nf6 10.0-0 Be7 11.Nd4 (11.Bb4 Bb4 12.d4 0-0-/+) 11...0-0-/+ 12.Na3 Bb7 13.Ba1 Nbd5 14.Nb1 Qb6 15.Nc3 Nc7 16.Qb1 Ra8 17.Qb2 b4 18.Rb1 c5 19.Nf3 Nfe8 20.Nd1 Nb5 21.c3 (21.Qb3!?-+) 21...Na3 22.Rc1 b3 23.c4 Nc2 24.Nc3 (24.Rb1 Qa6 25.Qb3 Bf3 26.Bf3 Na1 27.Qb2-+) 24...Bf6 (24...Ra1?! 25.Ra1 Na1 26.Qa1-+; 24...Na1?! 25.Ra1 Ra1 26.Qa1-+) 25.Bd3 Ra2! 26.Qb1 Ra1 27.Qb2 Ra2! 28.Qb1 Bc3 29.dc3 Na3 (29...Na3 30.Bh7 Kh8-+) 0–1. Neumann,Frank (1650) – Kleinert,Stefan (2395), RS–Pyramide remoteschach.de, 2009.

6.Bc3 Qb6 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.Bc3 Na6).

6.Bc3 d5 7.e3 Qd6 8.Ba6 ba6 9.Nf3 f6 10.0-0 (10.d4 e6=) 10...e5=+ 11.Na3? (11.d3 Qb8=+) 11...Nh6 (11...a5 12.Nb1 ab4 13.Bb2-+) 12.Qb1 (12.Qe2 Ng4 13.h3 e4 14.hg4 Bg4 15.Qa6 ef3=+) 12...Bg4 (12...a5 13.ba5 Qa3 14.Qb8-/+) 13.Ne1? (better 13.Qb3!?=+) 13...Be2-+ 14.d3? (14.Nd3 Bf1 15.Qf1 Qb8-+) 14...Be7 (14...a5 15.ba5 Bf1 16.a6-+) 15.f4? (15.e4-+) 15...Bf1 16.Kf1 Kf8 (better 16...ef4!? 17.e4-+) 17.fe5 fe5 18.Qb2 (18.Nf3 Ng4 19.e4 a5 20.ba5 Qa3 21.Qb8 Kf7 22.Qh8 Qc1 (22...Qc3?! 23.Qh7 Ne3 24.Ke2 Qc2 25.Ke3 d4 26.Nd4 ed4 27.Kf3 Qd3 28.Kg4 Qe2 29.Kh3-+) 23.Be1 Qc2-+) 18...Bf6 (better 18...Ng4!? 19.Nf3 Ne3 20.Ke2 Ng2 21.Be5 Qh6-+) 19.Nf3-/+ Nf7 20.Ke2 (20.Qb3 Kg8-+) 20...Ke7 21.b5? (21.e4 Rb8 22.Qa1 Kf8-+) 21...ab5 (21...Rb8 22.b6-+) 22.d4? (22.Nb5 Qb8 23.Qb4 Ke8 24.Na3 Qb4 25.Bb4-+) 22...ed4 (22...e4 23.Ne5 Be5 24.de5-+) 23.ed4 Kd7 24.Kf2 (24.Kf1 Ng5 25.Ne5 Be5 26.de5 Rf8 27.Ke1 Qe7-+) 24...Be7 (24...Ng5 25.Ne5 Be5 26.de5-+) 25.Nb1 Rf8 26.Kg1 Ng5 (26...Qe6 27.Nbd2-+) 27.Ne5 Kc7 28.Ba5 Kb7 29.Nc3 (29.Be1 Qe5! 30.de5 Bc5 31.Bf2 Rf2-+) 29...Qa3 (better 29...Qf6 30.Nf3 Nf3 31.gf3 Qf3 32.Qb1 Qg4 33.Kh1 Rf2 34.Qb5 cb5 35.Nd5 Qg2) 30.Qa3 Ba3 31.Nd7 (31.h4 Ne6 32.Ne2 c5-+) 31…Ra8 (31...Ra8 32.Bb6 Ra6-+) 0-1. benachamohcine (2110) - Snipy (2050), Rated Blitz game, lichess.org, 2014.

6.Bc3 e6 7.b5 Nc5 8.e3 Nf6 9.Nf3 d5 10.Be2 Bd7 11.bc6 bc6 12.Ne5 Bd6 13.Nd7 Ncd7 14.0-0 0-0 15.d3 c5 16.Nd2 Qc7 17.d4? (better is 17.f4!?=+) 17...cd4 18.Bd4 Bh2 19.Kh1 Be5 20.g3 Rc8 21.Bd3 Bd4 22.ed4 Qc3 23.Nf3 Ne4 24.Be4 de4 25.Ne1 Nf6 26.Kg2 Rc4 27.Qb1 g6 28.Qd1 Rd4 29.Qb1 Rd2 30.Qc1 e3 31.Nf3 Rc2 32.Qb1 Rf2 (better is 32...Ne4 33.Qb8 Kg7 34.Kg1-+) 33.Rf2 ef2 34.Kf2 Ne4 (better is 34...Ng4 35.Kg2 Ne3 36.Kf2 h5-+) 35.Kg2?? (35.Qe4 h5=) 35...Nf6 (better is 35...Qf3! 36.Kf3 Nd2 37.Ke3 Nb1-+) 36.Qb8?? (36.Kf2 Ng4 37.Kg2 Ne3 38.Kf2-+) 36...Kg7-+ 37.Ng5 (37.Qe5 Qc2 38.Kf1-+) 37...Qd2 38.Kh3 Qg5 (39.Qd6 Qd5 40.Qd5 ed5-+) 0–1. valpa – kali, HCL–C1332 playchess.de, 2002.

7.Nc3 b4 8.Nb5 d6 9.e3 Bd7 10.f4 Qb6 (10...Qa5 11.Nd4+=) 11.Nd4 (11.Bd4 Nc5 12.Qa1 f6 (worse is 12...Bb5 13.Bc5 dc5 14.Qa8 Kd7 15.Bb5 Qb5 16.Qf8=) 13.Qa8 Kf7-/+) 11...Nf6-/+ 12.Nb3 e6 13.Nf3 Be7 14.Bd3 Nc5 15.Nc5 dc5 (15...Qc5?! 16.Bd4 Qc6 17.0-0=) 16.g4 (16.0-0 0-0-/+) 16...0-0 17.g5 Ne8 (17...Nd5!?-/+) 18.Ne5+= Bb5 19.Bh7 Kh7 20.Qh5 Kg8 21.Nf7 Rf7 22.g6 Bh4 23.Qh4 Rc7 24.Qh7 Kf8 25.Kf2 Rd7 (25...Qc6 26.Rc1 Qd5 27.d3+=) 26.d3+= e5 27.Be5 b3 28.c4 Bc4 ½–½. Hoch,Hubertus (2105) – Tritt,Maciej (1905), corr WS/M/165 ICCF, 2008.

7.Nc3 b4 8.Nb5 d6 9.e4 Qa5 10.Nd4 Nc5 11.Bb5 Kd8 12.Bc4 Ne4 13.Bf7 e5 14.Nb3 Qc7 15.Bg8 Rg8 16.Ne2 Bf5 17.0-0 Be7 18.d3 Nf6 19.f4 Qb6 20.Kh1 Ng4 21.Qe1 Bd7 22.d4 Ne3 23.Rg1 Nc2 24.Qd2 Na1 25.Ra1 e4 26.Ra8 Bc8 27.Nc5 d5 28.Qa2-/+ b3 29.Nb3 Rf8 30.Na5 Qb5 31.Kg1 Bb4 32.Qb2 Rf7 33.h3 Rc7 34.Nb3 Bd6 35.Ra5 Qb4 36.Rd5 Be6 37.Rd6 Qd6 38.Nc5 Bd5 39.Qd2 b6 40.Na4 Bc4 41.Nec3? Bd3 (42.Qe3 Qb4-+; 41...Qb4 42.Qe3-+) 0–1. pierre (1660) – albatroz (1845), internet, 2005.

7.e3 Qb6 8.Bd4 Qc6 9.Nf3 f6 10.Nc3 Attacking the isolated pawn on b5 10...e5 11.Bb5 Qe6 12.Ba7 Bb4 13.e4 Ne7 14.Be3 0-0 15.0-0 Nc7 16.Ba4 d5 17.ed5 Ncd5 18.Nd5 Nd5 19.Qb1 Kh8 20.Bb3 Be7 21.Re1 Qc6 22.Qa2 Be6 23.h3 b5 24.d3 Ra8 25.Bd5 Bd5 26.Qb1 Bf3 27.gf3 b4 28.Kg2 f5 29.Bd2 Exerts pressure on the isolated pawn 29...Bd6 30.Bb4 Rb8 31.c3 f4 32.Re4 Qd5 33.Qc2 Rb6 34.Bd6 Rd6 35.d4 Rg6 36.Kh2 ed4 37.Re8 (37.Re8) 1-0. carlos78 (2230) - Snipy (2115), Rated Blitz game, lichess.org, 2015.

7.e3 Nc7 8.Nc3 b4 9.Na2 e6 10.Nb4+= Bb4?? (better 10...Nf6 11.Qb1 d5+=) 11.Bg7+- d5 (11...Nf6 12.Bh8 Ncd5 13.Nf3+-) 12.Bh8 Ne7 (12...Nf6 13.Qa1 Be7 14.Nf3+-) 13.Ba1 (13.Qh5 Ng6 14.Qh7 Nh8 15.Qh8 Bf8+-) 13...Ng6 (13...Nc6 14.Qh5 d4 15.Qh7 de3 16.Qh8 Kd7 17.Qd8 Kd8 18.fe3+-) 14.Nf3 Bd7 15.c4 (15.h4 Bd6+-) 15...b5 16.cd5 Nd5 17.Be2 Bc6 (17...Bd6 18.0-0+-) 18.Qc2 Qa8 19.0-0 Be7 (19...Bd6 20.Bg7 f6 21.Nd4+-) 20.Rc1 Nb4 21.Qb3 (21.Qc3 Qa4+-) 21...Bd5 (21...Qb7 22.Bg7+-) 22.Bb5 Kf8 23.Bc4 (23.Qc3 f6 24.Qc8 Kg7 25.Qa8 Ba8+-) 23...Bf3 24.gf3 Qf3 25.Qd1 (better 25.Be2 Qa8 26.Qc4+-) 25...Qh3 (25...Qf5 26.Qa4 f6 27.Be2 Qg5 28.Kf1+-) 26.Qf1 (better 26.Bf1 Qh4 27.Rc8 Bd8+-) 26...Qh5 (26...Qf5 27.Qg2 Kg8 28.Bc3+-) 27.Qg2 Bd6 (27...Kg8 28.f4 Bf8 29.Be5+-) 28.f4 (28.Qa8 Ke7 29.Qb7 Kf8 30.Be6 Ne5 31.Be5 Be5 32.Qb4 Kg7 33.Qg4 Qg4 34.Bg4 h6+-) 28...Nh4 (28...Nd5+-) 29.Qg7 (better 29.Bb5! e5 (29...Ng2?? 30.Rc8 Ke7 31.Re8; 29...Qb5?? 30.Qa8 Ke7 31.Qa7 Qd7 32.Bf6 Kf6 33.Qd7+-) 30.Rc8 Ke7 31.Re8 Kf6 32.Be5 Be5 33.fe5 Qe5 34.Qf2 Nf3 35.Qf3 Qf5 36.Qf5 Kf5+-) 29...Ke8 30.Bb5! Ke7 (30...Qb5 31.Qg5 Double attack (31.Qg5 Decoy)) 31.Bf6 1-0. carlos78 (2185) - Snipy (2055), Rated Blitz game, lichess.org, 2015.

7.e3 Nc7 8.c4 bc4-/+ 9.Bc4 d5 10.Be2 f6 11.Nf3 e5 12.0-0 Bd6 13.Qc2 Ne7 14.Rc1 0-0 15.Nc3 Be6 16.Nb5 (16.Qb3 Qa8-/+) 16...Nb5 17.Bb5 Qb6 18.Be2 Rc8 19.Qb1 (19.Bc3 Nf5-/+) 19...Rc1 (19...Qb1 20.Rb1 Bf5 21.d3-+) 20.Qc1 Qc6 21.Qb1 Bf5 22.d3 Be6 23.h3 Bc5 (better 23...Bf5!?-/+) 24.d4=+ Bd6 (24...Bf5!? 25.Qf1 ed4 26.Nd4 Bd4 27.Bd4 Qc2=+) 25.de5+= fe5 26.Ne5 Qc7 27.Nf3 Bf5 28.Qa2 (28.Qb5!? Bg6 29.Bd4+=) 28...Qc1=+ 29.Bf1 Bd3 30.Nd2 Bb4 (better 30...b5=+) 31.Bb2?? (better 31.Qb3 Bd2 32.Qd3 Qa1 33.Qd2=) 31...Qd2-+ 32.Qa8 Kf7 33.Bd3 Qd3 (33...Qb2?! 34.Qb7 Qc1 35.Bf1-+) 34.Qb7 (34.Be5 Bc3 35.Bd6 Qb1 36.Kh2-+) 34...Qb1 35.Kh2 Qb2 36.f4 (36.Qb8 Nf5 37.Qb7 Kf6 38.Qd5 Qf2-+) 36...Bc3 37.Qd7 (37.Qb2 Bb2 38.Kg3 Nf5 39.Kf3 Bc1-+) 37...Qf2 38.Qg4 Be1 (38...Qe3!? 39.h4-+) 39.Qh5 g6 40.Qh7 Kf6 (better 40...Ke6!? 41.Qh8-+) 41.Qh8 Ke6 42.Qe5 Kd7 (42...Kf7 43.f5 Qf5 44.Qd4-+) 43.f5 (43.Qd4 Qf1 44.Qa7 Ke6 45.f5 Nf5-+) 43...Qf5 (43...Bb4 44.f6 Nf5 45.Qa1 Bd6 46.Kh1-+) 44.Qa1 Bf2 45.Qa4 Ke6 46.Qa6 Kf7 47.Qe2 (47.Qa4-+) 47...Qe5 48.Kh1 Qe3 (48...Qa1 49.Qf1 Qf1 50.Kh2 Qg1) 49.Qg4 (49.Qf3 Kg8 50.Qe3 Be3 51.Kh2-+) 49...Qc1 (49...Qe1 50.Kh2 Qg1) 50.Kh2 (50.Qd1 Qd1 51.Kh2 Qg1) 50...Bg1 (50...Qg1) 51.Kh1 Bf2 52.Kh2 Qg1 0-1. carlos78 (2205) - Snipy (2075), Rated Blitz game, lichess.org, 2015.

7.e3 Nc7 8.c4 bc4 9.Bc4 d5 10.Be2 Nf6 11.Qc2 e6 12.Nf3 Bd6 13.0-0 0-0 14.Ng5 (14.Rc1 Bd7=) 14...Nce8 (14...e5!?-/+) 15.Bd3 (15.Nc3 h6 16.Nf3 Nc7=) 15...h6=+ 16.Nh7 (16.Nf3 Bd7=+) 16...Nh7 17.Bh7 Kh8 18.f4 Nf6 19.Bd3 Bd7 20.Nc3 (20.Bd4 b5 21.Nc3 b4=+) 20...Bc6 (20...Qa5 21.Ne2=+) 21.Ne2 (21.Nb5 Bb5 22.Bb5 Qe7=) 21...Ne4=+ 22.Nd4 Nc5 (22...Qd7 23.Nc6 Qc6 24.Qa2=+) 23.Nc6= bc6 24.Rc1 (better 24.Be2!?=) 24...Nd3-/+ 25.Qd3 Qd7 (better 25...c5!?-/+) 26.Qc3= f6 27.Qc6 Qc6 28.Rc6 Rd8 29.Kf2 Kg8 30.Ra6 Rd7 31.g4 Kf7 32.h4 Be7 33.Kf3 Bd6 34.h5 Be7 35.Bc3 Bd8 36.d3 Be7 37.Ra8 Bd8 38.Bb4 Be7 39.Be7 Ke7 40.f5 e5 41.Rg8 Kd6 42.Re8 Ra7 43.Re6 Kd7 44.Rb6 Ke7 45.d4 ed4 46.ed4 Ra3 47.Kf4 Rd3 48.g5?? (better 48.Rb7 Kf8 49.Rb8 Ke7 50.Rb7 Kf8 51.Rb4=) 48...hg5-+ 49.Kg4 Rd4 50.Kg3 Rf4 (50...Rh4 51.Rc6-+) 51.Re6 (51.Rb7 Kf8-+) 51...Kf7 (51...Kd7 52.h6 gh6 53.Rf6-+) 52.Rd6 Rf5 53.Kg4 (53.Rd8 Re5-+) 53...Re5 (53...Ke7 54.Rc6 Rf4 55.Kg3-+) 54.Rd7 (54.Rc6 Kg8-+) 54...Kg8 55.h6 (55.Rd8 Kh7-+) 55...gh6 56.Kh5 g4! 57.Kg6 (57.Kg4 Rg5 Combination) 57...Kf8 (better 57...Rg5 58.Kf6 g3 59.Re7-+) 58.Kf6 Ke8 59.Rh7 (59.Ra7 Re2 60.Ra3-+) 59...Re4 (better 59...Re2 60.Rh6 g3-+) 60.Rh6 Kd7 61.Kf5 g3 62.Rg6 Re3 (62...Re1 63.Rg3 Kd6 64.Kf4-+) 63.Kf4 d4?? (better 63...Rc3-+) 64.Rg3= Rg3 65.Kg3 Ke6 66.Kf4?? (better 66.Kf2=) 66...Kd5 67.Kf3 (67.Kf5 d3 68.Kg6 d2 69.Kh7 d1Q 70.Kg6 Qg4 71.Kf6 Kd6 72.Kf7 Qg5 73.Kf8 Ke6 74.Ke8 Qe7) 67...Kc4 68.Ke2 Kc3 69.Kd1 (69.Kf3 d3 70.Kf4 d2 71.Ke5 d1Q 72.Kf6 Qd6 73.Kf7 Kd4 74.Kg7 Qe7 75.Kg6 Ke3 76.Kh6 Kf3 77.Kg6 Kg4 78.Kh6 Kf5 79.Kh5 Qg5) 69...Kd3 70.Ke1 Kc2 71.Ke2 d3 72.Ke1 (72.Ke3 d2 73.Ke4 d1Q 74.Ke5 Qd8 75.Kf5 Qd6 76.Ke4 Qc5 77.Kf3 Qf5 78.Kg3 Kd3 79.Kg2 Ke2 80.Kg3 Qg5 81.Kh3 Kf3 82.Kh2 Qg2) 72...d2 73.Ke2 d1Q 74.Kf2 Qd2 75.Kf3 Qd3 (75...Qd5 76.Ke3 Qd3 77.Kf4 Qd6 78.Ke4 Qc5 79.Kf3 Qf5 80.Kg2 Qg5 81.Kf3 Kd3 82.Kf2 Qg4 83.Kf1 Ke3 84.Ke1 Qe2) 76.Kg4 Kd2 77.Kf4 Qe3 78.Kg4 (78.Kf5 Qe7 79.Kg4 Ke3 80.Kf5 Kf3 81.Kg6 Kg4 82.Kh6 Kf5 83.Kh5 Qg5) 78…Ke2 (78...Ke2 79.Kf5 Qe7 80.Kf4 Qe6 81.Kg3 Qe4 82.Kh2 Qg4 83.Kh1 Kf3 84.Kh2 Qg2; 78...Qe6 79.Kf3 Qf5 80.Kg3 Qg5 81.Kf3 Qh4 82.Kg2 Ke2 83.Kg1 Kf3 84.Kf1 Qf2) 0-1. carlos78 (2205) - kekss5 (2195), Rated Blitz game, lichess.org, 2015.

7.e4 Qa5 8.Nc3 b4 9.Nd5 Nf6 10.Nf6 gf6 11.Ne2 Nc5 12.Ng3 h5 13.h4 (13.Nh5? Rh5 14.e5 fe5 15.Qh5 Qa1 16.Qd1 Qd1 17.Kd1 Ne4-+) 13...Rg8 14.Be2 Rg3 15.fg3 Ne4 16.Bd3 (16.Bh5 Bh6 17.g4 Bd2 18.Ke2 Qc5-+) 16...d5 17.0-0 Ng3 18.Rf2 Qa7 19.Qe1 Ne4 20.Be4 de4 21.Bb2 Qa2 22.Qa1 Qa6 23.Qe1 Qc6 24.d4 ed3 25.cd3 e5 26.d4 e4 27.Re2 f5 28.Qg3 Be6 29.Qe5 Bd6 30.Qh8 Kd7 31.Qh5 Qc4 32.Re1 Qd3 33.d5 Qd5 34.Rd1 Qc5 35.Bd4 Qb5 36.Rd2 b3 37.Qh8 f4 38.Be5 Qc5 39.Kh2 Bd5 40.Qh5 Kc6 41.Rd1 (41.Qh8 e3 42.Qe8 Kb6 43.Qd8 Qc7 44.Qc7 Kc7 45.Rd5 Be5 46.Kg1-+) 41...f3-+ 42.Bd6 Qd6 (42...Kd6?! 43.Qf7 fg2 44.Qg6 Kc7 45.Qg2-/+) 43.g3 Qc5 44.Qh6 Kb5 45.Qg5 Bc6 46.Qd2 Qc2 47.Qc2 bc2 (47...bc2 48.Ra1 e3-+) 0–1. Van Daatselaar (2230) – Luzuriaga (2375), WSTT/3/06/4 – Sokolsky Opening, A00, 2006.

7.e4 Nc7 8.c3 d5 9.Qf3 (9.e5 Bf5 10.Na3 f6=) 9...de4 10.Qe4 Nf6 11.Qc2 g6 12.Nf3 Bg7 13.Nd4 Attacks the isolani on b5 13...0-0 14.Nb5? (better 14.Qb3!?-/+) 14...Nb5-+ 15.Bb5 Qd5 (15...Qa5 16.Qb2 Bf5 17.0-0-+) 16.Bf1 Bg4 17.d4? (better 17.f3 Qe6 18.Kd1-+) 17...Ra8 18.Bb2 Ra2 19.f3 Bf5 20.Qc1 Qb3 (20...Bb1!? 21.Qb1 Qb3 22.Qc1-+) 21.Nd2 Qb2 22.Qb2 Rb2 23.Bc4 (23.g4 Bh6 24.Nc4 Rb1 25.Kf2 Be6-+) 23…Bh6 (23...Bh6 24.Nf1 b5-+) 0–1. moss42 (2015) – Zeitgeist (2165), ChessWorld.net, 2013.

7.e4 Nc7 8.Nc3 b4 9.Nb5 Nf6 10.Bf6 ef6 11.Nf3 Be7 12.h3 0-0 13.Nc7 Qc7 14.Bb5 d5 15.ed5 Bf5 16.Ba4 Rc8 17.d3 Qc3 18.Kf1 Ra8 19.Qe2 Bf8 20.g4 Ra4 21.gf5 b3 22.cb3 Qb3 23.Ne1 Qd5 24.Qf3 Ra5 25.Qd5 Rd5 26.Ke2 Re5 27.Kf3 Rf5 0–1. marekt – nordlicht, gameknot.com, 2001.

7.d4 Bf5=+ 8.e3 Bb1 (8...e6 9.b5 Nb8 10.Nf3=+) 9.Qb1= e6 10.Bd3 Nf6 11.Nf3 Nc7 12.Ne5 (12.0-0 Bd6=) 12...Bd6= 13.0-0 (13.Qc2 Be5 14.de5 Ng4=) 13...0-0 (13...Be5!? 14.de5 Ng4=+) 14.c4+= dc4 15.Nc4 Be7 16.g3 (16.e4 Nh5+=) 16...Ncd5= Exerts pressure on the isolated pawn 17.Be2 (17.b5!? cb5 18.Qb5=) 17...Nb4=+ 18.Bc3 Nbd5 19.Bd2 b5 20.Ne5 Ne4?? (20...Qb6 21.Rc1 Rc8 22.Bb5=) 21.Be1 (better 21.Qe4!? Qa8+-) 21...Qc7?? (21...Ndc3 22.Bc3 Nc3=+) 22.f3?? (better 22.Qe4 Bd6 23.f4+-) 22...Nd6 (22...Nec3 23.Bc3 Nc3 24.Qc2 Ne2 25.Qe2-/+) 23.Bf2 (23.Qc1-/+) 23...Rc8 (better 23...f6!? 24.Nd3 Nc4-/+) 24.Rc1= The backward pawn on c6 becomes a target 24...Qb7 25.e4 Nb6 26.Kg2 f6 27.Nd3 Ndc4 (27...Rb8 28.Nb2=+) 28.Nf4 (28.Nc5 Qa7 29.Ne6 Ba3=) 28...Bd6 (better 28...Qd7!?-/+) 29.Ne6 (29.Bc4 bc4 30.e5 Be7+=) 29...Qf7= 30.Nc5 Bc5 (better 30...Ra8!?=) 31.dc5+/- Nd7 32.Bc4 bc4 33.Qb4 (33.Qb7!? Qe8 34.Rc4+/-) 33...Ne5= 34.f4 (better 34.Rc3=) 34…Nd3-/+ (34...Nd3 35.Qc4 Nc1 36.Qc1 Re8-/+) 0-1. ClayPigeons (2110) - jah20179 (2135), Rated Bullet game, lichess.org, 2020.

7.e3 Qb6 8.Na3 Nf6 9.Nf3 Bf5 10.Be2 e6 11.0-0 Bd6 12.Nd4 Bg6 13.f4 e5 (13...0-0 14.Nac2=) 14.fe5 Be5 15.Nac2 0-0 16.Ne1 c5 17.bc5 Nc5 18.Nef3 Bd6 19.Nh4 Re8 (19...Qc7 20.g3=) 20.Nhf5 (20.Ng6 fg6 21.g3 Nce4+=) 20...Bb8 21.g3 Nce4 22.Kg2 (22.Nh4 Be5=) 22...Qc5 (22...Nd6 23.Nh6 Kh8 24.Ng4 Ng4 25.Bg4=+) 23.Bb2 (23.Nh4 Be5+=) 23...Be5 24.Nb5 Qc8 25.g4 (25.Nh4 Ng5 26.Ng6 Qh3 27.Kg1 Bg3 28.hg3 Qg3 29.Kh1 fg6=+) 25...Qb8 26.Rh1 Bf5 27.gf5 Bh2 28.Qe1?? (better 28.Rh2 Qg3 29.Kh1 Nf2 30.Rf2 Qf2 31.Qf1 Qh4 32.Kg1-/+) 28...Bg3-+ 29.Qg1 Nf2 30.Bf3 (30.c4 Nh1 31.Bf6 Nf2-+) 30...Nh1 31.Qh1 Be5 32.Ba3 (32.Bc1 Qc8-+) 32...Ne4 (32...Qd8 33.Qh4-+) 33.Be4 (33.Qh4 Bf6 34.Qh3 Nd2 35.Bd5 Qe5-+) 33...de4 34.Kf1 (34.Qh4 Qd8 35.Qd8 Rd8-+) 34...Qd8 35.Qg2 (35.Qe4 Bc3! 36.Qc4 Bd2-+) 35...Qd3 36.Qe2 Qe2 (better 36...Qd7!? 37.Ke1-+) 37.Ke2 g6 38.Bd6 Bd6 (38...gf5!? 39.c4-+) 39.Nd6 Re7 40.c4 Kg7 41.d4 (41.fg6 hg6 42.Nc8 Re6-+) 41...ed3! 42.Kd3 Kf6 43.e4 (43.c5-+) 43...Rd7 44.c5 b6! 45.Kc4 (45.cb6 Rd6 Double attack (45...Rd6 Deflection; 45...Rd6 Decoy)) 45...bc5 46.Ne8 (46.fg6 fg6 47.Kc5-+) 46...Ke5 47.Kc5 gf5 48.ef5 h5 49.Ng7 h4 50.Kc4 h3 51.Nh5 Kf5 (51...Rd4 52.Kc5 Rg4 53.Kb5 h2 54.Kc6 h1Q 55.Kc5 Qd5 56.Kb6 Rb4 57.Kc7 Qd6 58.Kc8 Rb8) 52.Ng3 Kg4 53.Ne4 (53.Nf1 f5 54.Kc3 f4-+) 53...Kf3 (better 53...Rc7 54.Kd4 h2 55.Ke3-+) 54.Ng5 Kg2 0–1. Williams,Barry – Sims,Martin, NZL Wanganui Chess Club Championship ro, 2001.

7.e3 Qc7 8.b5 (8.Nf3 Nf6 9.b5 cb5 10.Bb5 Bd7 11.c4=; 8.f4 Nf6 9.Be2 Bf5 10.Nf3 e6 11.Nd4=; 8.d4 Nf6 9.Nf3 Bf5 10.Nbd2 b5 11.Ne5=; 8.Be2 e5 9.b5 cb5 10.Bb5 Bd7 11.Bd7=) 8...Nc5 9.c4 e5 10.d4 ed4 11.Bd4=.

7.e3 Nc7 8.c4 dc4 9.Bc4 e6 10.Bc3 b5 11.Be2=+.

7.e3 Nc7 8.Nf3 Nf6 9.Be2 e6 10.d3 Bd6 11.Nbd2 (11.0-0 0-0=) 11...0-0 12.0-0 Bd7 (12...b5 13.Qc2=) 13.Qc2 (13.e4 e5=) 13...h6 (13...Qe7 14.e4 e5 15.c4=) 14.h3 (14.e4 Nh5=) 14...Re8 (14...Qe7 15.e4 e5 16.c4=) 15.Rb1 Qa8 (15...Qe7 16.e4 e5 17.c4=) 16.Bb2 (16.c4 b5+-) 16...b6 (16...e5 17.c4 Na6 18.c5+=) 17.c4+= dc4? (better 17...Na6!? 18.Bc3 e5+=) 18.Nc4+- (18.Qc4?! e5=; worse 18.dc4 Rd8+-) 18...Nb5 19.Bf6 gf6 20.Nb6 Qb7 21.Nd7 (21.Nc4 Be7+-) 21...Qd7+- 22.Rc1 Rc8 (22...Bb4 23.Qc6 Qc6 24.Rc6+-) 23.Qb2 (23.Qc4 f5+-) 23...Be7 (23...Qe7 24.Rc4+-) 24.d4 Qb7 25.Ne1 Nc7 26.Nd3 (26.e4 Qb6+-) 26...Nd5 27.Bf3 Rb8 28.Qb1 (28.Rc4 Qa6 29.Qc2 Qa1 30.Qc1 Qc1 31.Rc1 Nb4 32.Nb4 Rb4 33.Rc6 Rb1 34.Kh2 f5+-) 28...Bb4 29.Nb4 (29.Rc2 Qa6 30.Ra2 Bf8 31.Qb8 Qa2+-) 29...Qb4 30.Qb4 Nb4 (30...Rb4? 31.Rc6 Nb6 32.g4+-) 31.Rb1 (31.g4 e5+-) 31...Na6 (31...f5 32.g3+-) 32.Rb8 Nb8 33.Kf1 (33.g4 Kf8+-) 33...Kf8 34.Ke2 (34.g4 Ke7+-) 34...Ke7 35.Kd3 Kd6 (35...f5 36.Kc4+=) 36.Bh5+- Ke7 37.Kc4 f5 38.Kc5 f6 (38...Na6 39.Kc6 Nb4 40.Kc7 Nd5 41.Kc8+-) 39.Bf3 e5 (39...Na6!? 40.Kc6 Nb4 41.Kc7 Nd3+-) 40.Bc6+- Na6 41.Kc4 Kd6 (41...Nc7 42.Bb7+-) 42.Bb7 (42.Be8 f4+-) 42...Nc7 43.Bc8 f4 44.ef4 ef4 45.Kd3 Nd5 (45...Nb5 46.Ba6 Na7 47.h4+-) 46.Ke4 Ne7 (46...Nb4 47.Bb7+-) 47.Bb7 Ng6 (47...Kc7 48.Ba8+-) 48.Kf5 Nh4 (48...Nf8 49.Kf4 Ne6 50.Kf5+-) 49.Kf4 (better 49.Kf6 f3 50.Bf3 Kc7+-) 49...Ke7 (49...Ke6 50.Kg4 Ng6 51.Kh5 Nf4 52.Kh6+-) 50.Kg4 (better 50.Be4!? f5 51.Bf5 Ng2 52.Kg3 Ne1+-) 50...Ng6 51.Kh5 Nf4 52.Kh6 Ne2 (52...Ne6 53.d5 Nc5 54.Bc6+-) 53.d5 Nf4 (53...Nd4 54.Bc6+-) 54.h4 Nd3 (54...Kf7 55.g4 Ng6 56.d6+-) 55.f3 (55.Kg7 Nf2 56.h5 Ng4+-) 55...Nf4 (55...Nc5 56.Bc6 Kf7 57.h5+-) 56.g4 f5 (56...Kf8 57.h5+-) 57.Kg5 Ng2 (57...Nd3 58.Kf5 Nb2 59.f4+-) 58.gf5 (58.gf5 Ne1 59.f6 Kf7 60.d6+-) 1–0. Bango,Dominik – Cisko,Miloslav, Majstrovstva SR Mladeze – Chlapci do, 2014.

7.e3 Nc7 8.Nf3 Bg4 9.h3 Bf3 10.Qf3 Nf6 11.c4=.

7.e3 Nc7 8.f4 Bf5 9.d3 e6 10.Nf3 c5 11.c4=.

7.e3 Qd6 8.b5 (8.Nf3 Nf6 9.b5 Nc7 10.c4 Bg4 11.bc6=; 8.f4 Nf6 9.Nf3 Bf5 10.Nd4 Bg4 11.Qa4=; 8.d4 Bf5 9.Ne2 Nf6 10.Ng3 Bg6 11.Nd2=; 8.Ba6 ba6 9.Nf3 e5 10.d3 e4 11.de4=+) 8...Nc7 9.bc6 bc6 10.c4 e5 11.Nf3=.

7.e3 Nf6 8.Ba6 (8.Nf3 Qc7 9.b5 cb5 10.Bb5 Bd7 11.c4=; 8.f4 Bg4 9.Be2 Be2 10.Ne2 e6 11.0-0=+; 8.d4 Bf5 9.Ne2 e6 10.Ng3 Bg6 11.Nd2=+; 8.b5 Nc5 9.Nf3 Bf5 10.d4 Qa5 11.Nbd2=+) 8...ba6 9.Nf3 Qc7 10.Qa4 e5 11.d3=.

7.Nf3 Qb6 8.e3 (8.d3 Nf6 9.Nbd2 Bg4 10.Ne5 Bh5 11.h3=; 8.Qc2 Nf6 9.e3 e6 10.Be2 Bd6 11.d4=; 8.Bb2 Nf6 9.e3 Bf5 10.Be2 e6 11.0-0=; 8.Ne5 f6 9.Nf3 e5 10.e3 Bd6 11.Be2=+) 8...Bg4 9.h3 Bf3 10.Qf3 Nf6 11.Be2=.

7.Nf3 c5 8.bc5 Nc5 9.d4 Ne4 10.e3 Ngf6 11.Qb3 e6 12.Nbd2 Bd6 13.Ne4 Ne4 14.Bd3 0-0 15.0-0 Qc7 16.Rb1 Rd8 (16...b5 17.Bb5 Bb7 18.Bd3=) 17.c4+= dc4 18.Qc4 Qc4 19.Bc4 Bc7 20.Rc1 Bb6 21.Bd3 Nf6 (21...Nd6 22.Ng5 h6 23.Ne4 Ne4 24.Be4+=) 22.Kf1 (22.Bc3 Bd7+-) 22...Bd7 23.Rb1 Ra8 ½–½. Woelfelschneider,Peter – Rosner,Dirk, TRS–9.02, 2000.

7.Nf3 Qc7 8.e3 (8.b5 cb5 9.e3 Bd7 10.Qb3 Nf6 11.Bb5=+; 8.d4 Nf6 9.e3 Bf5 10.Nbd2 b5 11.Ne5=; 8.Qc2 e5 9.b5 cb5 10.e4 Bd7 11.ed5=+; 8.d3 Nf6 9.Nbd2 e5 10.e3 Bd6 11.Be2=+) 8...Nf6 9.b5 cb5 10.Bb5 Bd7 11.c4=.

7.Nf3 Qd6 8.d4 (8.e3 e5 9.d4 e4 10.Ne5 Ne7 11.b5=; 8.d3 Nf6 9.e3 e5 10.c4 Bg4 11.Be5=; 8.Na3 e5 9.Bb2 Nf6 10.b5 Nc5 11.bc6=+; 8.b5 cb5 9.e3 Bd7 10.Qb3 Nf6 11.Bb5=) 8...Bf5 9.e3 Nf6 10.Nbd2 e6 11.Nh4=.

7.Nf3 Bf5 8.Na3 (8.b5 Nc5 9.bc6 bc6 10.d4 Nd7 11.e3=; 8.Bb2 Qc7 9.e3 Nf6 10.Be2 e5 11.b5=; 8.e3 Qa8 9.Nh4 Bc8 10.Bb2 e5 11.Nf3=; 8.d3 e6 9.Nbd2 Nf6 10.Qc2 Bg4 11.e4=) 8...e6 9.e3 Qa8 10.Qa4 Be4 11.Ne5=.

7.Nf3 Nf6 8.Na3 Qd6 9.e3 e5 10.Ba6 ba6 11.Qa4=+.

7.Nf3 Nf6 8.Bb2 e6 9.e3 Bd6 10.d4 Nb8 11.Bd3=.

7.Nf3 Nf6 8.b5 cb5 9.e3 Qa5 10.Bb2 b4 11.Be2=+.

7.Nf3 Nf6 8.d4 Bf5 9.e3 e6 10.b5 Nb8 11.Nbd2=+.

7.Nf3 Nf6 8.e3 Qd6 9.b5 Nc7 10.c4 Bg4 11.bc6=.

7.Nf3 Nf6 8.e3 e6 9.d4= Bd6 10.Bd3 0-0 11.0-0 Nb8 12.Nbd2 Nbd7 13.e4 e5 ½–½. Schwertel,Gottfried – Rosner,Dirk, fax SOK–99–F003, 1999.

7.Nf3 Nf6 8.e3 g6!?=+.

7.f4 A) 7...Nf6 8.e3 (8.Nf3 c5 9.bc5 Nc5 10.e3 Qa5 11.Bb2=; 8.Bb2 d4 9.b5 Qb6 10.ba6 Qb2 11.cd4=+; 8.Na3 e6 9.Nf3 c5 10.b5 Nc7 11.c4=+; 8.Qc2 Bg4 9.h3 Bd7 10.e3 Nc7 11.Nf3=) 8...Nc7 9.Nf3 Bf5 10.Nd4 Bg4 11.Qa4=; B) 7...Qb6 8.Bb2 (8.e3 Bf5 9.Nf3 Nf6 10.Be2 c5 11.Ne5=; 8.Na3 Bg4 9.Nf3 Bf3 10.ef3 e6 11.Qe2=+; 8.Nf3 Nf6 9.e3 Bg4 10.b5 Nc5 11.c4=) 8...Nf6 9.Nf3 Bd7 10.e3 Bg4 11.Be2=; C) 7...e6 8.Nf3 (8.e3 Qh4 9.g3 Qf6 10.Nf3 Nb4 11.Ne5=+; 8.Na3 c5 9.b5 Nc7 10.c4 Nf6 11.Qa4=+; 8.Bb2 Qf6 9.b5 Nc7 10.bc6 bc6 11.e3=+) 8...Nf6 9.e3 Bd6 10.Be2 0-0 11.0-0=; D) 7...Qd6 8.e3 Nf6 9.Nf3 b5 10.Be2 Bg4 11.Na3=; E) 7...Bf5 8.e3 (8.Nf3 e6 9.e3 Qa8 10.Nd4 Nb4 11.Nf5=+; 8.Na3 e6 9.Nf3 Bd6 10.e3 Ne7 11.Nh4=+; 8.d3 Qc7 9.Qd2 e5 10.fe5 Qe5 11.Nf3=+; 8.Bb2 e5 9.e4 de4 10.fe5 Ne7 11.Na3-/+) 8...e5 9.Nf3 ef4 10.ef4 Bd6 11.Ba6=+.

8.Nf3 Bd6 9.Ba6 ba6 10.c4 dc4 11.Qa4=.

8.Nf3 Bd6 9.c4 Bf5 10.Be5 Be5=.

8.Nf3 Bd6 9.d3 Nf6=+ 10.Be2 0-0 11.0-0 (11.Nbd2 Qc7=+) 11...e4 (11...Qc7 12.h3-/+) 12.Nd4=+ c5 (12...Qc7 13.h3=+) 13.bc5 Nc5 14.de4 de4 15.Na3 (15.c4 Bd7=+) 15...Qc7 (15...Qe7=+) 16.Nab5 (16.h3 Qe7 17.Nab5 Be5=+) 16...Bh2= 17.Kh1 Qb8 18.Bb2 (18.g3 Bg3 19.fg3 Qg3-/+) 18...Bd7 (18...Bc7 19.Ba3 Bb6 20.Qb1-/+) 19.Ba3 Rc8 (19...Bd6 20.Nc6 Bc6 21.Nd6-/+) 20.Bc5 (20.g3 Bg3 21.fg3 Qg3 22.c4-/+) 20...Rc5-/+ 21.c4 (21.g3 Bg3! 22.fg3 Qg3-/+) 21...Be5-+ 22.Kg1 Bb5 23.Nb5 Rc8 24.f4 ef3-+ 25.Rf3 Rc6 26.Bd3-/+ Ra6 27.Nd4 Ra3-+ 28.Bf5 Rc3 29.Qe2 Qc7 30.Nb5 Rc1 31.Rf1 Qc4 32.Qc4 Rc4 33.Kf2 h5 34.Rd1 Kf8 35.Bd3 Ra4 36.Rd2 Ke7 37.Bf5 Ra5 38.Bd3 Rb5 39.Bb5 Ne4 40.Ke2 Nd2 41.Kd2 h4 42.Kd3 g5 43.Ke4 Kd6 44.Bc4 f6 45.Kf5 Kc5 46.Be6 b5 47.Ke4 Kb4 (48.Kd3 Ka3-+) 0–1. Meisinger,Peter (1710) – Rosner,Dirk (1830), DESC, 2000.

8.Nf3 Bd6 9.Be2 Ne7 10.0-0 0-0 11.Na3 Nc7 (11...Qc7 12.d3=+) 12.Nc2 f5 (12...e4 13.Nfd4=+) 13.d4 (13.c4 e4 14.c5 ef3 15.Bf3 f4=) 13...e4 14.Nd2 Ne6 Black prepares f4 15.c4 f4 16.cd5 (16.c5 Bb8 17.f3 fe3-/+) 16...cd5=+ 17.ef4 (17.f3!? fe3 18.Ne3-/+) 17...Nf4-+ (17...Bf4?! 18.g3 Bh6 19.f3=+; 17...Rf4?! 18.f3 ef3 19.Nf3=+) 18.Ne3 (18.Kh1 Qd7 19.Ne3 Ng2 20.Ne4 de4-+) 18...Neg6 (18...Nf5 19.Nf5 Bf5 20.g3-+) 19.Bb5 Qg5 20.g3 Bh3 (20...Nh3 21.Kh1 Rf2 22.Ne4 de4 23.Bc4 Kh8 24.Ng2 Bg3 25.Qe2-+) 21.Re1 (21.Qb3!? Kh8 22.Re1-/+) 21...Bb4 22.Bf1?? (better 22.Ne4 de4 23.Qb3 Be6 24.Qb4 Nh3 25.Kh1 Nf2 26.Kg1-+) 22...Bf1 23.Rf1 (23.Kf1 Nh3 24.Re2-+) 23...Nh4 (better 23...Nh3 24.Kg2 Ngf4 25.Kh1 Nd3 26.Ne4 de4 27.Qb3 Rf7-+) 24.Ne4 (24.Kh1 Nd3 25.Ne4 de4-+) 24...de4 25.Qb3? (25.Kh1 Nd3 26.f4-+) 25...Kh8 (better 25...Rf7 26.Kh1 Qh5-+) 26.Qb4-/+ Nf3 (better 26...Nh3!? 27.Kh1 Nf2 28.Rf2 Rf2 29.Qb7 h6 30.Qa8 Kh7 31.Qe4 Ng6-+) 27.Kh1=+ Rd8 28.d5 (28.Qb7 Qh5 29.h4-+) 28...Nd3?? (28...Nd5 29.Qb7 Ne3 30.fe3 Nh2=+) 29.Qc3?? (better 29.Qe4 Qh5 30.Bg7 Kg8 31.Ng4+-) 29...Qh6 (29...Rg8 30.Qc7 Nd2 31.h4-+) 30.Ng4 (30.h4!? Rg8 31.Qc7=+) 30...Qg6-/+ 31.Ne3 Rg8 32.Ng2? (better 32.Qa3-/+) 32...Qh5 33.h4 (33.Nh4 Nh4 34.gh4 Qf3 35.Kg1 Qg4 36.Kh1-+) 33...Qg4 34.Nf4 (34.Qc8 Rc8 35.Bg7 Kg7 36.Nf4 Nf4 37.gf4 Qh3) 34…Nf4 (34...Nf4 35.Qg7 Rg7 36.Bg7 Kg7 37.gf4 Qh3) 0-1. carlos78 (2210) - Snipy (2070), Rated Blitz game, lichess.org, 2015.

7.e3 d5 8.Nf3 Bd6 9.Ba6 ba6 10.c4 Bb4 11.Ne5 Ne7=.

7.e3 d5 8.Nf3 Bd6 9.Ba6 ba6 10.c4 dc4 11.Qa4=.

7.e3 d5 8.Nf3 Bd6 9.Ba6 ba6 10.d3 Nf6 11.Qa4 (11.0-0 0-0=+) 11...Qb6 12.0-0 (12.Nbd2 0-0=+) 12...Qb5 (12...Bf5 13.Rd1 0-0 14.c4 Qb4 15.Qb4 Bb4 16.Ne5=+) 13.Qc2 (13.Qd1 0-0=+) 13...0-0 (13...Bf5 14.Rd1=+) 14.Nbd2 (14.c4 Qb8=+) 14...Re8=+ Black plans e4 15.h3 (15.c4 Qb8=+) 15...e4 (15...c5 16.bc5 Qc5 17.Rb1-/+) 16.c4=+ Qb7 (16...Qb4 17.Bf6 ef3 18.Bc3=+) 17.de4= Ne4 18.Qb2 (18.c5 Bc7 19.Ne4 Re4=) 18...Bf8 (18...f6 19.c5 Bb8 20.Nd4=+) 19.c5= Bf5 20.Nd4 Nd2 21.Nf5? The pressure on g7 grows (21.Qd2 Be4=) 21...Nc4?? (21...Nf1 22.Nd6 Qe7 23.Ne8 Ne3 24.Ng7 Nc2 25.Qc2 Bg7=) 22.Qd4= Re4 23.Qc3 f6 24.Rc1 Re8 25.Qd4? Re4?? 26.Qc3= a5 27.ba5 Bc5 28.Qd3 Qa6 29.Bd4= Bf8 30.Bb6+= Re8 Attacking the isolated pawn on a5 31.Nd4 Ra8 The pressure on the isolated pawn grows 32.Rb1 Qc8= 33.Rc1 Qa6 34.Rb1 Qc8= 35.Rc1 Qa6 36.Rb1 (36.Nc6 Nb6 37.Qa6 Ra6 38.ab6 Rb6=) ½–½. spereira (1885) – albatroz (1855), Chesshere.com, 2005.

7.e3 d6 8.b5 (8.d4 Nf6 9.Be2 e4 10.b5 Nc7 11.c4=+; 8.Nf3 Nf6 9.Be2 e4 10.Nd4 c5 11.Nb3=; 8.Be2 Qg5 9.Bf1 Nf6 10.d4 e4 11.Qb3=+; 8.d3 Nf6 9.Nf3 Be7 10.Be2 0-0 11.0-0=) 8...Nc7 9.c4 Nf6 10.Nf3 cb5 11.cb5=.

7.e3 Ne7 8.Nf3 (8.Be2 d5 9.d4 e4 10.Bb2 Nf5 11.b5=+; 8.c4 Ng6 9.b5 cb5 10.cb5 Nb4 11.d4=+; 8.b5 cb5 9.d4 e4 10.Bb5 Nc7 11.Qb3=+; 8.d4 e4 9.Qc2 d5 10.Ne2 Nf5 11.Nf4=+) 8...d6 9.Be2 e4 10.Nd4 c5 11.Nc2=.

7.e4 b5 8.Nf3 (8.d4 ed4 9.Qd4 d6 10.c4 Nb4 11.Qd2=; 8.Na3 Nf6 9.Nf3 d6 10.Qc2 Be7 11.d4=) 8...Nf6 9.Ne5 Bd6 10.d4 0-0 11.Bd3+=.

7.e4 d5=+ 8.Qa4 b5-/+ 9.Qb3 (better is 9.Qc2!?-/+) 9...de4-+ 10.Ne2 Nf6 11.g3? (better is 11.Ng3-+) 11...Be6 12.Qa3 (12.Qd1 Qd5 13.Nc1 Bg4-+) 12...Qd3 13.Qb2 Qf3 14.Rg1 Ng4 (14...Bc4 15.Qa3 Nb8 16.h3-+) 15.Rg2 Bc4 (better is 15...Bd6 16.Ng1 Qf5 17.Be2-+) 16.d3?? (better is 16.Ng1 Qf5 17.Bc4 bc4 18.Qa2-+) 16...ed3 17.Nd2 (17.Nc1 Qe4 18.Kd1-+) 17…de2 (18.Nf3 ef1Q 19.Kd2 Qg2 20.Qb1 Qf2 21.Kd1 Qf1 22.Ne1 Nf2 23.Kc2 Qe2 24.Kc1 Qe1 25.Kb2 Qd2 26.Ka3 Nb4 27.cb4 Bb4 28.Qb4 Qa2) 0–1. chrisalvin2005 (1655) – smurilo (1735), chessHere.com, 2006.

7.e4 d5=+ 8.d3 Nf6 9.Nd2 Bd6=+.

7.e4 d5 8.Nf3 de4 9.Ne5 Bd6 10.d4 ed3 11.Nd3=+.

7.e4 d6 8.Qc2 (8.Nf3 Nf6 9.Qe2 Bg4 10.h3 Bh5 11.Na3=+; 8.Ba6 ba6 9.Nf3 Nf6 10.Qe2 Qb6 11.d4=; 8.d4 ed4 9.Qd4 Nf6 10.Bd3 d5 11.ed5=) 8...d5 9.Nf3 Nf6 10.Ne5 Ne4 11.Ba6=.

7.e4 Qe7 8.Nf3 (8.Ba6 ba6 9.Nf3 Qe6 10.d3 d5 11.0-0=; 8.d3 Nf6 9.Nf3 d5 10.Nbd2 Bg4 11.Be2=; 8.Qc2 Nf6 9.Nf3 d5 10.ed5 cd5 11.Bb5=; 8.Bb2 Nf6 9.Nf3 d6 10.Ba6 ba6 11.d3=) 8...Nf6 9.Ba6 ba6 10.0-0 d6 11.Re1=.

7.e4 Nf6 8.Nf3 (8.Ba6 ba6 9.Nf3 d6 10.d3 Be7 11.Nbd2=) 8...d6 9.d4 Ne4 10.de5 Qb6 11.Qe2=.

7.Nf3 d6 8.b5 cb5 9.e4 Qa5 10.Bb2 Nc5 11.d4=+.

7.Nf3 d6 8.Qc2 Nf6 9.e4 Be7 10.Na3=+.

7.Nf3 d6 8.Qc2 Nf6 9.e4 Bg4 10.Be2 d5 11.h3=+.

7.Nf3 d6 8.Qc2 Nf6 9.e4 g6 10.d4 ed4 11.Ba6 ba6 12.cd4 Bd7 13.0-0 Bg7 (13...Be7 14.Bc3=) 14.Nbd2 0-0 15.Re1 Qb8 16.Nc4 (16.Bc3 Re8=) 16...d5 (16...Qb4?? 17.Rb1 Qb1 18.Qb1+-) 17.Nce5 Be8 18.Nd2 Ne4 (worse 18...Qb4 19.Nd3 Qe7 20.e5+=) 19.Ne4 de4 20.Re4 Qb4 21.Bb2 (21.Nc6?? Bc6 22.d5 Qa3 23.Bg7 Kg7-+) 21...a5 22.h3 a4 23.Re3 Qb6 (23...c5 24.dc5 Bb5 25.Re4=) 24.Ba3+= Qd4 25.Bf8 Qa1 (25...Be5 26.Qe4 Qe4 27.Re4 Kf8 28.Re5+=) 26.Kh2+= Be5 27.g3 Bd7 (27...Kf8 28.Qc5 Kg7 29.Qe5 Qe5 30.Re5+=) 28.Rd3 Kf8 (28...Bf5 29.Rd8 h5 30.Bd6 Kh7 31.Be5 Qe5 32.Qa4+= (worse 32.Qc6 a3 33.Qd5 Qf6=)) 29.Rd7 Qb2 30.Qc5 Kg7 31.Kg2 Qe2 32.Qc6 Qa2 33.Qc5 Bf6 34.Ra7 Qb3 35.h4 h5 (35...h6 36.Kg1 h5 37.Ra8+-) 36.Qd6 Bc3 (36...Bb2 37.Qd8+-) 37.Qd8 a3 (37...Qa2!?+-) 38.Ra8+- Qb7 39.Kg1 Kh7 40.Qg8 (40.Ra3?! Qb1 41.Kh2 Qb2+=) 40...Kh6 41.Qf8 (41.Ra3?! Qb1 42.Kh2 Qb2 43.Qf8 Bg7+=) 41...Kh7 42.Qa3 Qb1 (42...Bd4 43.Ra4 Qb6 44.Qf3+-) 43.Kh2 Qf5 44.Qa7 (44.Qc3?! Qf2 45.Kh3 Qf1 46.Kh2 Qf2 47.Kh3 Qf1 48.Kh2 Qf2=) 44...Qf6 45.f4 Qf5 46.Qa2 Bg7 (46...Bd4 47.Rd8 Bg7 48.Rd2+-) 47.Ra7 f6 (47...Kg8 48.Qc4+-) 48.Qc4 Qg4 49.Re7 Qf3 50.Qe2 Qd5 (50...Qe2 51.Re2 f5 52.Re7+-) 51.Rc7 Qd4 (51...f5 52.Qe5 Qa2 53.Kh3+-) 52.f5 Kh6 53.fg6 Kg6 54.Rb7 Kh6 55.Rb5 Qg4 56.Qe3 Kg6 57.Qe8 Kh6 58.Kg2 Qg6 59.Qg6 Kg6 60.g4! hg4 61.h5 Kh7 (61...Kh6 62.Rf5+-) 62.Rf5 Kg8 63.Kg3 Kf7 64.Rb5 (64.Ra5 Kg8+-) 64...Bh6 (64...Kg8 65.Kg4 Kh7 66.Kf5+-) 65.Kg4 Ke6 (65...Kg8 66.Kf5 Kh7 67.Kf6+-) 66.Rc5 (66.Rb6 Ke5+-) 66...Bd2 (66...Be3 67.Rc3 Bd2+-) 67.Rc2 Bh6 68.Rc6 Ke5 69.Ra6 Bc1 (69...Bg5 70.Ra8+-) 70.Ra1 Bd2 71.Ra2 Be3 (71...f5 72.Kf3 Bg5 73.Ra6+-) 72.Re2 f5 73.Kf3 f4 74.h6 Kf6 75.Rh2 (75.Rh2 Kf7 76.h7+-) 1–0. Marekt – Jpost, internet, 2020.

7.Nf3 d6 8.e3 Nf6 9.Be2 e4 10.Nd4 c5 11.Nc2=+.

7.Nf3 d6 8.e4 Nf6 9.Qe2 Bg4 10.h3 Bh5 11.g4=+.

7.Nf3 e4 8.Nd4 d5 9.e3 Qc7 10.d3 Nf6 11.de4=.

7.Nf3 e4 8.Nd4 d5 9.e3 Bd7 10.d3 Nf6 11.de4 de4 12.Nd2 c5 13.bc5 Nc5 14.c4 Bd6 15.Nb5 Bb8 16.Bd4 Ne6 (16...Qe7 17.Be2=) 17.Bf6+= Qf6 18.Ne4 Qe5 19.Nec3 (19.Bd3 f5 20.f4 Nf4 21.ef4+/–) 19...Bc6=+ 20.Nd5 0-0 (better is 20...Bb5 21.cb5 0-0=+) 21.f4? (better is 21.Nbc3=) 21...Nf4-+ 22.Nf4 Qe3 23.Ne2 Bb5 24.cb5? (better is 24.Qd4 Qd4 25.Nd4-+) 24…Bc7 The mate threat is Ba5 (25.Qd2 Qa7-+) 0–1. pierre (1610) – smurilo (1665), chessHere.com, 2006.

7.Nf3 e4 8.Nd4 d5 9.e3 Bd7 10.Be2 (10.d3 Bd6=) 10...Nf6 (10...Qg5 11.g3=+) 11.0-0 Bd6 12.d3 Qc7 13.h3 0-0 14.Nd2 (14.de4 de4 15.Qd2 Ra8-/+) 14...c5 15.bc5 Nc5 16.de4 de4 17.c4 Rd8 (17...Ra8 18.Nb5 Bh2 19.Kh1 Bb5 20.cb5=) 18.Qb1 (18.Nb5 Bb5 19.Bf6 gf6 20.cb5 Ne6=) 18...Be5=+ 19.Rc1 (19.f4 ef3 20.N2f3 Bd6=+) 19...b6 (better is 19...Ba4=+) 20.Nb5? (better is 20.Bc3=+) 20...Bb5-+ 21.cb5 (21.Be5 Qe5 22.Rd1 Ba4 23.Qb6 Rb8-+) 21…Rd2 (22.Rd1 Re2-+) 0–1. Gegonz – smurilo (1835), Chesshere.com, 2006.

7.Nf3 Qe7 8.e4 (8.e3 Nf6 9.Ba6 ba6 10.d3 d5 11.Qa4=; 8.d3 Nf6 9.e4 d5 10.Nbd2 Bg4 11.Be2=; 8.b5 cb5 9.e3 Nc7 10.Bb2 Nf6 11.Be2=; 8.Bb2 e4 9.Nd4 d5 10.Ba3 Nc7 11.e3=) 8...Nf6 9.Ba6 ba6 10.0-0 d6 11.Re1=.

7.Nf3 f6 8.e4 (8.e3 d5 9.d3 Bd6 10.Be2 Ne7 11.0-0=+; 8.d3 d5 9.e4 d4 10.b5 Qa5 11.ba6=; 8.b5 Nc7 9.bc6 bc6 10.e4 d5 11.ed5=; 8.Bb2 d5 9.e3 Bd6 10.b5 Nc7 11.Ba3=+) 8...d5 9.Bd3 de4 10.Be4 f5 11.Bc2=.

8.Ba6 ba6 9.c4 e4 10.c5 d6 11.Qa4=.

8.Ba6 ba6 9.d4 e4 10.Nd2 d5 11.Nb3 Bd6 12.Na5 Qc7 13.g3 (13.Qa4 Bd7-/+) 13...0-0-+ 14.Qa4 Bd7 15.Ne2 (15.Qc2-+) 15...c5! 16.Qa2 (16.bc5 Ba4 Annihilates a defender: a4) 16...cb4 17.Nb3 (17.0-0 Bh3 18.Rc1 Qd7-+) 17...Bb5 18.0-0 (18.cb4 Bb4 19.Kd1 Bc4-+) 18...Qc4 (18...bc3 19.Rc1 Be2 20.Qe2 Qc4 21.Qc4 dc4-+) 19.Qc2 (19.Re1-+) 19...Qe2 20.Qe2 Be2 21.Rc1 h6 (21...Bc4 22.Rb1 Bd3 23.Rc1-+) 22.Nc5 (22.cb4 Bb4 23.h3 Rb8-+) 22...Rb8 (22...Bc5!? 23.dc5 b3 24.c4 dc4 25.Bf6 gf6 26.f4-+) 23.Rc2 (23.cb4 Rb4 24.Bc3 Rb6-+) 23…Bc4 (24.cb4 Rb4-+; better is 23...bc3!? 24.Rc1-+) 0–1. chrisalvin2005 – smurilo (1840), internet, 2006.

8.b5 cb5 9.Bb5 Qa5 10.Qa4 b6 11.c4=+.

8.d4 e4 9.b5 Nc7 10.bc6 bc6 11.c4=+.

8.Ne2 d5 9.d4 Bd6 10.de5 Be5 11.Nd4=+.

8.Nf3 d6 9.Ba6 ba6+= 10.Qa4 Qb6 11.Na3 (11.c4 Bf5 12.0-0 Be7+=) 11...Be7 12.0-0 (12.d3 0-0+=) 12...0-0 13.Rb1 (13.d3 Bf5 14.e4 Bg4+=) 13...Bd7 (13...Bf5 14.Rb3+=) 14.h3 (14.d3 Rb8+=) 14...Rb8 (14...c5 15.Nc4 Qb5 16.Qa2-/+) 15.Qd1 (15.d3 c5 16.Qc2 cb4 17.Rb4 Qc7+=) 15...Qc7 (15...e4 16.Nd4+=) 16.Nc4 (16.d3!?+=) 16...e4-/+ 17.Nh2 (17.Ne1 d5 18.Na3 c5-/+) 17...d5 18.Na3 Bd6 (18...c5 19.bc5 Rb1 20.Nb1 Bc5 21.c4-/+) 19.Nf1-/+ a5 (19...c5 20.d3-/+) ½–½. Lindebaum,Andre (1840) – Kinski,Andreas, Berlin GER Unicorn Open, 2007.

8.Nf3 d6 9.b5 Nc7=.

8.Nf3 d6 9.Be2 e4 10.Nd4 c5 11.Nc2=+.

7.Bb2 A) 7...d6 8.Nf3 (8.e3 e5 9.Be2 b5 10.Nf3 Be7 11.0-0=; 8.b5 Nc7 9.Na3 e5 10.e3 d5 11.c4=+; 8.d4 e5 9.de5 de5 10.Qd8 Kd8 11.Nf3=+; 8.Qc2 e5 9.e4 d5 10.ed5 Qd5 11.Na3=+) 8...e5 9.d3 Be7 10.e4 0-0 11.Be2=; B) 7...e5 8.Nf3 (8.e4 d5 9.ed5 Qd5 10.Na3 Be7 11.Nf3=+; 8.e3 d5 9.d4 e4 10.b5 cb5 11.Bb5=+; 8.b5 cb5 9.e3 Nc7 10.Be2 d5 11.d4=+; 8.d4 ed4 9.Qd4 d5 10.e3 Bd6 11.Bd3=+) 8...d6 9.d3 Bg4 10.Nbd2 Be7 11.e4=; C) 7...Qb6 8.e3 (8.Nf3 d5 9.e3 Bg4 10.h3 Bf3 11.Qf3=; 8.Na3 e5 9.e4 d6 10.Qe2 Nb4 11.cb4=+) 8...e5 9.c4 d6 10.b5 Nb4 11.Qb3=; D) 7...Qc7 8.Nf3 (8.e3 d5 9.Nf3 e5 10.b5 Nb8 11.c4=; 8.d4 d5 9.Nf3 Bf5 10.e3 e6 11.Nbd2=) 8...d5 9.d4 Bf5 10.e3 e6 11.Nbd2=; E) 7...d5 8.Nf3 (8.f4 d4 9.b5 Qb6 10.ba6 Qb2 11.cd4=+) 8...Qc7 9.e3 e5 10.b5 Nc5 11.Ba3=+.

7.b5 A) 7...Nc7 8.bc6 (8.e3 Nb5 9.Bb5 cb5 10.Nf3 Qa5 11.Bb2=+) 8...dc6 9.Nf3 e6 10.c4 Bd6 11.Qc2=; B) 7...cb5 8.e3 (8.Nf3 Qa5 9.Bb2 b4 10.e3 bc3 11.Bc3=+; 8.Bb2 d5 9.e3 Bd7 10.Nf3 e6 11.Ne5=+; 8.Qc2 d5 9.e3 Bd7 10.Nf3 e6 11.Ne5=+) 8...e5 9.Bb5 Qa5 10.Qa4 b6 11.c4=+; C) 7...Nc5 8.Bb2 (8.e3 d5 9.Nf3 Bf5 10.d4 Qa5 11.Nbd2=+; 8.c4 cb5 9.cb5 d5 10.Nf3 Bf5 11.Bf6=+; 8.bc6 dc6 9.d4 Nce4 10.f3 Qa5 11.Bb2=; 8.d4 Qa5 9.Nd2 Nce4 10.bc6 Nd2 11.Kd2-/+) 8...d5 9.Nf3 Qb6 10.e3 Bf5 11.d4=; D4) 7...Nb8 8.e3 (8.c4 cb5 9.cb5 d5 10.e3 Nbd7 11.Nf3=; 8.bc6 Nc6 9.c4 e5 10.Nf3 e4 11.Nd4=+; 8.Bb2 e5 9.c4 Bc5 10.e3 d6 11.d4=; 8.Qc2 d5 9.Nf3 Qa5 10.Qb2 e6 11.e3=+) 8...d5 9.Nf3 Bg4 10.h3 Bf3 11.Qf3=; E) 7...Qa5 8.ba6 Qa1 9.ab7 Bb7 10.e3 c5 11.f3=+.

7.d3 A) 7...e5 8.Nf3 (8.e3 d5 9.Nf3 Bd6 10.Be2 0-0 11.Nbd2=+; 8.e4 d5 9.ed5 cd5 10.Nf3 Bd6 11.Be2=+; 8.Nd2 d5 9.Ngf3 Bd6 10.e4 0-0 11.Be2=+) 8...Qc7 9.e4 d5 10.ed5 cd5 11.Qe2=+; B) 7...d6 8.Nf3 (8.e4 e5 9.Nf3 Be7 10.Nbd2 Bg4 11.Be2=) 8...e5 9.e4 Be7 10.Nbd2 Bg4 11.Be2=; C) 7...d5 8.Nf3 (8.e3 e5 9.Nf3 Bd6 10.Be2 0-0 11.Nbd2=+) 8...e6 9.Nbd2 Bd6 10.e4 e5 11.d4=; D) 7...b5 8.e4 (8.Nf3 Qc7 9.e4 e5 10.Be2 Be7 11.Nbd2=; 8.Nd2 e5 9.Ngf3 d6 10.e4 Be7 11.d4=) 8...e5 9.Nf3 d6 10.Nbd2 Be7 11.d4=; E) 7...Qc7 8.Nf3 d5 9.d4 Bf5 10.e3 e6 11.Nbd2=+.

7.d4 d5 8.e3 =+.

7.d4 g6 8.e3 (8.Nf3 Bg7=) 8...Bg7 9.f4 (9.Nf3 0-0=) 9...0-0 10.Nf3 d6 (10...d5 11.Bd3=+) 11.Bd3 Bg4 (11...b5 12.e4=) 12.0-0 Nc7 (12...Qc7 13.e4=) 13.Nbd2 (13.e4 d5 14.e5 Nh5=) 13...b5 (13...Ncd5 14.Qe1=) 14.Qc2 (14.Qe1 Ncd5=) 14...Qa8 (14...Ncd5 15.Re1=+) 15.Bb2 (15.e4 Ne6=) 15...Qb7 (15...Ncd5 16.Re1=) 16.Ra1 (16.e4 Bh6=) 16...Ra8 (16...Ncd5 17.Kf2=+) 17.Ra8 Qa8 18.h3 (better is 18.e4=) 18...Qa2?? (better is 18...Bf3 19.Nf3 Nfd5=) 19.hg4+- Ng4 20.Nf1 (better is 20.e4!? Qe6+-) 20...Nd5 21.e4 Nf4+= 22.Bc1?? Qc2-+ 23.Bc2 Ne2 24.Kh1 Nc1 25.N3d2 Ne2 26.Nb1 Nf2 27.Kh2 Bh6 28.g3 Ng4 29.Kg2 e6?? 30.Kf3 Ng3 31.Kg3= Nf6 32.Kf3 Kg7 33.Ne3 e5 34.Ng4 Ng4=+ 35.Kg4 Bc1 36.d5 cd5-/+ 37.ed5 h5 38.Kf3 f5-/+ 39.Bd3? Kf6 40.Bb5-/+ g5 41.c4 e4 42.Ke2 Ke5 43.Bc6 Kd4?? Black intends e3 44.b5= Kc5?? 45.Bd7?? f4=+ 46.Kd1 Bb2 47.Nd2+= e3 48.Ne4 Kc4 49.Ng5 Bf6 50.Nf3?? Kd3?? 51.Bf5+- Kc4 52.b6 Bd8 53.b7 Bc7 54.Ke2?? Bb8?? (better is 54...Kd5 55.Nh4 Kc5=) 1–0. ahogator (1995) – Eralos (1995), Buho21.com, 2006.

7.e3 Qb6 8.Nf3 d5 9.Be2 Bf5 10.0-0 e6 11.Na3 Bd6 12.Qa4 0-0 13.Nd4 Bg6 14.Ba6 Ra8 15.Qb3?? (15.b5 Bd3 16.Rc1 Ba3 (16...ba6?! 17.bc6 e5 18.Ndc2=+) 17.Qa3 cb5-/+ (17...ba6?! 18.bc6 Qc7 19.c4 dc4 20.Nf3+=)) 15...Ra6 (better is 15...Qa6 16.Nab5 cb5-+) 16.Bb2 Ne4 17.Ra1 Nd2 18.Qd1 Ne4 19.Nac2 e5 20.Nb3 Ra1 21.Qa1 Nf2 22.Qa8 Bf8 23.Nc5 Qc7 (23...Bc2?! 24.Nd7 Nh3 25.Kh1 Nf2 26.Kg1 Nh3 27.Kh1 Nf2 28.Kg1=) 24.Kf2 b6 25.Na6 Qe7 26.Ne1 Qf6 27.Ke2? (better is 27.Kg1 Qh4 28.Nf3-+) 27...Bh5 28.Nf3 e4 29.Ba3 (29.Kf2 ef3 30.g3 Qg6 31.Qf8 Kf8 32.g4 Qc2 33.Kf3 Qf5 34.Ke2 Qg4 35.Kf2 Qe2 36.Kg1 Bf3 37.c4 Qe1) 29...b5 (29...ef3 30.Kd2 fg2 31.Qf8 Kf8 32.Kc2 Qf2 33.Kb1 g1Q 34.Bc1 Qd2 35.e4 Qgc1) 30.Nc5 (30.Kf1 ef3 31.g4-+) 30...ef3 (30...Bf3 31.gf3 Qf3 32.Kd2 Qf2 33.Kd1 Qe3 34.Kc2 Qe2 35.Kb1 Qe1 36.Kc2 Qf2 37.Kb3 Qh2 38.Nd7-/+) 31.gf3 Qf3 32.Kd3 (32.Ke1 Qe2) 32...Qe2 (32...Qd1) 33.Kd4 f6 (33...Qc4 34.Ke5 f6 35.Kf5 Qg4) 34.Qc6 Qc4 0–1. hal1958 – kali, HCL–A1256 playchess.de, 2003.

7.e3 Qc7 8.b5 (8.Nf3 d5 9.b5 cb5 10.Bb5 Bd7 11.c4=; 8.d4 b5 9.Nf3 d6 10.Bd3 e5 11.Nbd2=; 8.f4 d6 9.Ne2 e5 10.Bb2 b5 11.g3=+; 8.Be2 d5 9.Nf3 e5 10.b5 Nc5 11.d4=) 8...cb5 9.Bb5 Qe5 10.Qb3 Qf5 11.Nf3=.

7.e3 Nc7 8.Na3 (8.Nf3 d5=) 8...d5 9.Nf3 Bg4 (9...g6 10.Bd3+=) 10.Be2 e6 11.h3 Bh5 12.Qb3 Be7 13.c4 0-0 14.c5 Nd7 15.d4 (15.0-0 Bf6=) 15...Ne8 16.b5 (better is 16.Nb1=) 16...Qb8 (16...Nef6!?+=) 17.Ne5 (17.bc6 bc6 18.Qb8 Nb8+/–) 17...Ne5 18.Bh5 Nd7 19.0-0 g6 (19...Nef6 20.Bf3+=) 20.Be2 (20.Bf3+=) 20...f5 (20...Nef6!?+=) 21.bc6+/– bc6 22.Qb8 Nb8 23.Rb1 Nd7 (23...Nf6 24.Rb7 Nfd7 25.Nc2+/–) 24.Rb7+- Nef6 25.Rc7 Ra8 26.Bb2 Rb8 27.Bc1 Bc5? (better is 27...Kf7+-) 28.dc5 Nc5 29.Rc6 Nfe4 (29...Nfd7 30.Bb5 Kf7 31.Bb2+-) 30.Bb5 (30.f3 Nc3 31.Bf1 N3a4+-) 30...Nb3 (30...Nb7 31.f3 Nd8 32.Rc7+-) 31.Bb2 Nec5 (31...Kf8 32.f3 Nec5 33.Be5+-) 32.Rc7 Rb7 33.Rc8 Kf7 34.Rh8 h5 35.Be5 Nc1 (35...Ke7 36.Be8+-) 36.Be8 Ke7 37.Nb5 Ne4 (37...N1d3 38.Bd6 Kf6+-) 38.Rh7 Ke8 39.Rb7 (39.Rb7 Nd3 40.Nd6 Kf8 41.Bg7 Kg8 42.Ne4 de4 43.Bf6+-) 1–0. Matveenko,Yury (2060) – Astakhov,Alexander (1750), Voronezh RUS, 2014.

7.e3 d5 8.Ba6 (8.Nf3 Qc7 9.b5 cb5 10.Bb5 Bd7 11.c4=; 8.d4 Bf5 9.Nf3 e6 10.b5 Nb8 11.Nbd2=+; 8.b5 Nc5 9.Nf3 Bf5 10.d4 Nce4 11.bc6=+; 8.f4 Bg4 9.Be2 Be2 10.Ne2 e6 11.0-0=+) 8...ba6 9.Nf3 Qc7 10.Qa4 e5 11.d3=.

7.e3 d6 8.Be2 (8.Nf3 e5 9.d3 Bg4 10.Be2 Be7 11.0-0=; 8.b5 Nc7 9.c4 e5 10.Nf3 Be7 11.Be2=+; 8.d4 Bf5 9.Ne2 e6 10.Ng3 Bg6 11.Nd2=; 8.Ba6 ba6 9.Nf3 e5 10.Qa4 Qb6 11.d3=+) 8...e5 9.d3 c5 10.bc5 dc5 11.Nf3=.

7.e3 e5 8.b5 (8.Nf3 d6 9.Be2 e4 10.Nd4 c5 11.Nc2=+; 8.Be2 d5 9.Nf3 Bd6 10.d3 0-0 11.Nbd2=+; 8.Ba6 ba6 9.c4 e4 10.c5 d6 11.Qa4=+; 8.d4 e4 9.b5 Nc7 10.bc6 bc6 11.c4=+) 8...cb5 9.Bb5 Qa5 10.Qa4 b6 11.c4=+.

7.e3 g6 8.Nf3 d5 9.Ba6 ba6 10.Qa4 Bb7 11.0-0 Bg7 12.Ne5 0-0 13.Nc6?? (better is 13.c4=) 13...Qd7-+ 14.Ne7 Qe7 15.Qb3 Rc8 16.d4 Ne4 17.f3? (17.Qc2 Qc7-+) 17...Nd6 (17...Nc3 18.Bc3 Qe3 19.Kh1 Bd4 20.Re1 Qe1 21.Be1-/+) 18.Re1 Bh6 19.e4 de4 20.Qc2 Qf6 21.Qd1 ef3 0–1. Baer,Cy (1895) – Rosner,Dirk (2175), RSS5E easy–30, 2007.

7.Nf3 b5 8.Qc2 (8.e3 d6 9.d3 e6 10.Be2 e5 11.0-0=; 8.d4 d6 9.e3 Bf5 10.Na3 Qb6 11.Bd3=; 8.d3 d6 9.e4 e5 10.Nbd2 Bg4 11.Be2=; 8.Na3 d6 9.g3 e5 10.Bg2 Be7 11.Bb2=+) 8...d5 9.e3 Qc7 10.d4 g6 11.Bd3=.

7.Nf3 b6 8.e3 (8.d4 d5 9.Ne5 Nb8 10.e3 Nfd7 11.Nd7=; 8.Bb2 d5 9.e3 Nc7 10.Be2 e6 11.Ne5=; 8.Na3 e6 9.e3 Be7 10.Be2 0-0 11.0-0=; 8.d3 d5 9.e3 e6 10.Nbd2 Bd6 11.e4=) 8...Nc7 9.Be2 d5 10.0-0 Bg4 11.d3=.

7.Nf3 Qc7 8.d4 (8.b5 cb5 9.e3 Qa5 10.Bb2 d5 11.Be2=; 8.e3 d5 9.b5 cb5 10.Bb5 Bd7 11.c4=; 8.Na3 e5 9.e4 d6 10.Qc2 Be7 11.d4=+; 8.Bb2 d5 9.d4 Bf5 10.e3 e6 11.Nbd2=) 8...d5 9.e3 e6 10.Bd3 Bd6 11.Nbd2=.

7.Nf3 d6 8.d4 (8.b5 cb5 9.e3 Qa5 10.Bb2 e5 11.Be2=+; 8.e3 e5 9.Be2 e4 10.Nd4 c5 11.Nc2=+; 8.Qc2 e5 9.e4 Bg4 10.Be2 d5 11.h3=+; 8.Bb2 e5 9.d3 Be7 10.e4 0-0 11.Be2=) 8...Bf5 9.e3 e6 10.b5 Nc7 11.bc6=.

7.Nf3 g6 8.e3 Bg7 9.Ba6 ba6 10.Qa4 Qb6 11.0-0 Qb5 12.Qc2 0-0 13.d3 d6 14.Nbd2 c5 (14...Bf5 15.e4 Bd7 16.Rb1=) 15.bc5= Qc5 16.c4 Qc7 17.Rb1 Bb7 (17...Bd7 18.Bc3=) 18.e4 Rb8 19.Qb3 Nd7 20.Bg7 Kg7 21.Qc3 e5 22.d4 Kg8 23.h4 (23.Qe3 ed4 24.Nd4 Ne5=) 23...h5 (23...ed4 24.Qd4 h5 25.Rb3=) 24.Ng5 (24.Qe3 ed4 25.Nd4 Ne5=) 24...ed4 25.Qd4 a5 26.Nf1 (26.Rb3 a4 27.Rf3 Rf8+=) 26...a4+= 27.Ne3 Ba8 28.Rd1 Qc5 29.Qd6 Qd6 30.Rd6 Nc5 31.e5 a3 32.Rd2 Rb1 33.Kh2 Bb7 34.f4? Kf8 35.Nh7+= Kg7 36.Nf6 Ne4 37.Ra2 Rb3 38.Ned5 Bd5 39.Nd5 Nc3 40.Nc3 Rc3 41.c5 Kf8 42.c6 Ke7 43.Ra1 ½–½. Morley,Paul (2270) – Tritt,Maciej (1895), corr WS/M/180 ICCF, 2008.

8.Bb2 d5 9.Nf3 Bd6 10.d4 0-0 11.Bd3=.

8.b5 Nc7 9.c4 Be7 10.Qf3 0-0 11.Be2=.

8.d4 d5 9.Nf3 Bd6 10.Bd3 0-0 11.0-0=.

8.Be2 d5 9.Nf3 Bd6 10.0-0 e5 11.d3=.

8.Nf3 d5 9.Ba6 ba6 10.Qa4 Qb6 11.Ne5 Bb7 12.Na3 Bd6 13.Nd3 0-0 14.0-0 Ne4 15.Qd1 a5 16.ba5 Qa5 17.Nc2 Ra8 18.Nc1 Nc5 19.d4 Ne4 20.Nb3 Qa2 21.Nb4 Qa3 22.Nd3 Ba6 23.Bb2 Qa2 24.Nbc1 Qa5 25.Qc2 Bd3 26.Nd3 Qc7 27.f4 c5 28.Nf2 Nf2 29.Qf2 cd4 30.cd4 Ra2 31.Ra1? (Better is 31.Rc1 Qd7 32.Ra1 Ra1 33.Ba1=+) 31...Ra1-+ 32.Ba1 Qc1 33.Qf1 Qe3 34.Kh1 Qf4 35.Qf4 Bf4 36.Bc3 Kf8 37.g3 Bd6 38.Kg2 Ke7 39.Kf3 f5 40.h3 g5 41.Bd2 h6 42.Bc3 Kf6 43.Bd2 e5 44.de5 Ke5 (45.h4 gh4 46.gh4 h5-+) 0–1. hal1958 – kali, HCL–A819 playchess.de, 2002.

8.Nf3 d5 9.b5 Nc5 10.c4 Nce4 11.bc6=.

8.Na3 Qc7 9.b5 e6 10.Bb2 Qb6 11.c4=.

8.Bb2 Qc7 9.e3 e5 10.b5 Nc5 11.Ba3=+.

8.Qc2 Bg4 9.Ne5 Qc7 10.f4 e6 11.Ng4=.

8.d4 Bf5 9.e3 e6 10.b5 Nb8 11.Nbd2=+.

8.e3 Qb6 9.Be2 =.

8.e3 Qc7 9.b5 cb5 10.Bb5 Bd7 11.c4=.

8.e3 Bf5 9.Be2 h6 (9...Qd6 10.0-0=) 10.0-0 (10.Nd4 Bd7=) 10...Qc7 11.Qa4 (11.Bb2 e6=) 11...Bc8 (11...Bg4 12.Ba6 Bf3 13.gf3 ba6 14.Qa6=) 12.Na3 (12.Ba6 ba6 13.c4 Qb7+=) 12...e5= 13.c4 (better 13.Ba6!? ba6 14.c4=) 13...e4-/+ (worse 13...Bb4 14.Be5 Qe7 15.Bf6 gf6 16.cd5 Ba3 17.dc6+=) 14.Be5 (14.Ne5 Bb4 15.cd5 Nd5 16.Ba6 ba6 17.Nc2=) 14...Qe7 15.Bf6 gf6 16.Nd4 (16.c5 ef3 17.Bf3 Nc7-/+) 16...Qb4 17.Qc2 (17.Qb4!? Nb4 18.f3-/+) 17...Qa3-+ 18.cd5 Nc5 19.dc6 bc6 20.Nc6 (20.f3 f5-+) 20...Bd6 (20...Rg8 21.Rb1-+) 21.Bb5 (21.Nd4 Bd7-+) 21...0-0 22.Nd4 Nd3 (22...f5 23.f3-+) 23.Bc4? (better 23.Qc6=+) 23...Bd7-+ 24.Nb5 (24.Bd3 Qd3 25.Qd3 ed3-+) 24...Qc5 (better 24...Bb5 25.Bb5 Rb8-+) 25.Qb3?? (better 25.Nd6 Qd6 26.f3-+) 25...Rb8 26.Rb1 Qe5 (better 26...Ne5!? 27.Be2 Nd3 28.Bd3 ed3 29.Qd3 Rb5 30.f3-+) 27.g3 Qf5 (27...Bb5 28.Bb5 Qh5 29.Qc4-+) 28.f4 Be7 (28...Bf4 29.Rf1 Be6 30.Be6 fe6 31.Qc4-+) 29.Bf7 Kg7 30.Bc4 Qh5 31.Qa4 (31.Bd3 ed3 32.Qd3 Bb5-+) 31...Qe2 32.Bd3 (32.Qa7 Qf2 33.Kh1 Ne1 34.Re1 Qe1 (34...Rb5?? 35.Qd7 Qe1 36.Kg2 Qd2 37.Qd2+-) 35.Kg2 Qd2 (35...Bb5 36.Qe7 Kh8 37.Qf6 Kh7 38.Qe7 Kh8 39.Qe5 Kh7 40.Qc7 Bd7 41.Qd7 Kh8 42.Qd4 Kh7 43.Qa7 Rb7 44.Qb7 Kh8 45.Qc8 Kg7 46.Qg8 Kf6 47.Qf7; 35...Rb5 36.Qd7 Qd2 37.Qd2+-) 36.Kg1 Qd1 (36...Bb5? 37.Qe7 Kh8 38.Qf6 Kh7 39.Qe7 Kh8 40.Qe5 Kh7 41.Qe4 Kg7 42.Qe5 Kh7 43.Bb5+-; 36...Rb5?! 37.Bb5 Qd1 38.Bf1-+) 37.Bf1 Bh3 38.Qe7 Kg8 39.Qe6 Be6 40.Nc3 Qe1 41.g4 Bc4 42.Ne2 Be2 43.h3 Qg3 44.Kh1 Bf3 45.Bg2 Qg2) 32...Qd3 33.Qa7 (33.Qb3 Qb3 34.Rb3 Rb5 35.Rb5 Bb5 36.Kf2-+) 33...Qb1 (33...Bb5?! 34.Qe7 Kg6 35.Rb5 Qb5 36.Qe4 Qf5 37.Qd4-+) 34.Kg2 Qb5 (34...Qb5 35.Qd7 Qd7 36.g4 Qg4 37.Kf2 Qf3 38.Ke1 Rb1) 0–1. Hanscombe,Richard – Doran,Michael J (1860), The Four Nations Chess League Division, 2012.

8.e3 Bg4 9.h3 Bf3 10.Qf3 =.

9.d4 Bf5 10.Bd3 Bd3 11.Qd3 =.

9.d4 Bg4 10.Bd3 e6 =.

9.d4 Bg4 10.h3 Bf3 11.Qf3 Nc7 12.Bd3 e6 13.Nd2 Be7 (13...Bd6 14.0-0=) 14.0-0+= 0-0 15.Bb2 (15.e4 Ne4 16.Ne4 de4 17.Qe4 f5 18.Qc6 f4+-) 15...Nd7 (15...Bd6 16.Ra1+=) 16.Ra1 Nb6 (16...Re8 17.Ra7+=) 17.Bc2 (17.Ra7 Qd6+=) 17...f5 18.Nb3 (18.Ra7 Nc8 19.Ra5 Bd6+=) 18...Qd7 (18...Na4 19.Ra2=) 19.Bc1 Ra8 20.Ra8 Nca8 21.Nc5 (21.Na5 Bd6=) 21...Bc5 22.bc5 Nc4 23.Qf4 Nc7 24.f3 (24.Bd3 Qf7=) 24...g6 25.Qg5 (25.Bd3 Kg7+=) 25...Kf7 (25...e5!?=) ½–½. Benassi,Aspasio (2180) – Beltran Seguer,Jose Javier (2090), EM/M/156 ICCF Email, 2001.

9.d4 Bg4 10.h3 Bf3 11.Qf3 e6 12.Bd3 =.

9.d4 Bg4 10.h3 Bh5 11.Bd3 =.

7.b5 A) 7...Nc7 8.Nf3 (8.c4 Nf6 9.e4 d6 10.Bf6 ef6 11.Nc3=; 8.e4 Bg7 9.Na3 d5 10.c4 e5 11.ed5=; 8.e3 Nf6 9.c4 Bg7 10.Nf3 0-0 11.bc6=; 8.bc6 dc6 9.c4 Nf6 10.Be5 Bg7 11.d4=) 8...Nf6 9.bc6 dc6 10.c4 Bg7 11.d4=; B) 7...cb5 8.c4 (8.e3 Qa5 9.Bb2 Nf6 10.Qb3 Nc7 11.Na3=; 8.e4 Bg7 9.d4 b4 10.c4 d6 11.Bd3=; 8.Nf3 Nf6 9.e3 Qa5 10.Bb2 b4 11.c4=; 8.Na3 Nf6 9.Nb5 d5 10.Nf3 Bg7 11.e3=) 8...Nf6 9.cb5 Nc5 10.Bf6 ef6 11.e3=; C) 7...Nc5 8.d4 (8.c4 Nf6 9.Bf6 ef6 10.e3 cb5 11.cb5=; 8.e3 Nf6 9.Nf3 Bg7 10.Bb2 d5 11.d4=; 8.bc6 dc6 9.d4 Ne4 10.f3 Nd6 11.e4=; 8.Bb2 d5 9.e3 Nf6 10.Nf3 Bf5 11.Be2=) 8...Ne4 9.bc6 dc6 10.f3 Nef6 11.e4+=; D) 7...Qa5 8.ba6 Qa1 9.ab7 Bb7 10.e3 Nf6 11.Nf3=.

7.c4 f6 8.b5 (8.Bc3 d5 9.e3 e5 10.b5 Nc7 11.bc6=) 8...Nc7 9.e4 cb5 10.cb5 d5 11.e5=.

7.c4 Nf6 8.b5 cb5 9.cb5 Nc5 10.e3 Bg7 11.Bf6=.

7.c4 Nf6 8.Bc3 Bg7 9.b5 Nc7 10.e4 cb5 11.cb5=.

7.c4 Nf6 8.Nf3 Nb4+= 9.Qb3 Qb6 10.e3 Bg7 11.Be2 0-0 12.0-0 d6 13.Qa4 c5 14.Nc3 Bd7 15.Qb3 Ra8 16.Bb2 Bf5 17.d3 Ra6 18.Na4 Qc6 19.e4 (19.Bf6 Qa4 (19...ef6?! 20.Nc3+=; worse is 19...Ra4 20.Be7 Ra2 21.Re1-/+) 20.Qa4 Ra4 21.Be7 Bd3 22.Bd3 Nd3-+) 19...Be4 20.de4 Qa4 21.Qe3 Qc2 (21...Qa2 22.Bf6 Bf6 23.e5-+) 22.Bf6 Bf6 23.Rc1 (23.e5 de5 24.Qc5 Qe2 25.Qb4-+) 23...Qb2 24.Rd1 Ra2 25.Rd2 (25.Bf1-+) 25...Nc2 26.Qh6 (26.Qd3 Bc3 27.Rc2 Qc2 28.Qc2 Rc2 29.Bd3-+) 26...Qc1 27.Bf1 Ra1 (27...Ra1 28.Rd1 Qd1-+) 0–1. madik – psychobishop, gameknot.com, 2011.

7.c4 Nf6 8.Bf6 ef6 9.b5 Nb4 10.e3 d5 11.bc6=.

7.c4 Nf6 8.g4 h6 9.b5 Nc5 10.Bg2 cb5 11.cb5=.

7.e3 A) 7...d5 8.b5 (8.Ba6 ba6 9.Qa4 Qd7 10.Nf3 Bg7 11.d3=; 8.Nf3 Bg7 9.Ba6 ba6 10.Qa4 Qb6 11.c4=; 8.Na3 e5 9.Nf3 Bg7 10.Ba6 ba6 11.c4=; 8.c4 Nf6 9.b5 Nc7 10.bc6 bc6 11.Be5=) 8...Nc7 9.c4 Nf6 10.bc6 bc6 11.Be5=; B) 7...Bg7 8.b5 (8.d4 Nf6 9.Nf3 0-0 10.Bd3 d5 11.Nbd2=; 8.Ba6 ba6 9.Nf3 a5 10.Qa4 ab4 11.cb4=; 8.Na3 Nf6 9.Nf3 0-0 10.Ba6 ba6 11.Qa4=) 8...Nc7 9.bc6 dc6 10.Nf3 Bg4 11.Be2=; C) 7...d6 8.c4 (8.b5 Nc7 9.c4 Nf6 10.Bf6 ef6 11.Nf3=; 8.Nf3 Bg7 9.Ba6 ba6 10.0-0 Nf6 11.c4=; 8.Be2 Bg7 9.b5 Nc7 10.Na3 e5 11.Qa4=; 8.Ba6 ba6 9.Nf3 e5 10.Qa4 Qb6 11.d3=) 8...Nf6 9.b5 Nc7 10.Bf6 ef6 11.Nc3=; D) 7...e5 8.c4 (8.Nf3 d6 9.d3 Nf6 10.Nbd2 Bg7 11.Be2=; 8.Be2 d5 9.b5 Nc5 10.d4 ed4 11.ed4=; 8.b5 cb5 9.Nf3 Qa5 10.Bb2 d6 11.Be2=; 8.Bb2 d5 9.Nf3 Bd6 10.Ba6 ba6 11.c4=) 8...f6 9.b5 Nb4 10.d4 d5 11.bc6=; E) 7...Nf6 8.Ba6 (8.Be2 Bg7 9.Nf3 0-0 10.Bb2 d5 11.0-0=; 8.b5 Nc7 9.c4 Bg7 10.Nf3 0-0 11.bc6=; 8.Nf3 b5 9.Be2 Bg7 10.d3 Nd5 11.d4=; 8.Bb2 Bg7 9.Nf3 0-0 10.Be2 d5 11.0-0=) 8...ba6 9.Nf3 a5 10.Qa4 ab4 11.cb4=.

7.e4 A) 7...Nf6 8.Ba6 (8.e5 Nd5 9.b5 cb5 10.Qb3 Nf4 11.Qb5=; 8.b5 cb5 9.e5 Nd5 10.Qb3 Nf4 11.Qb5=) 8...ba6 9.c4 Bg7 10.e5 Ne4 11.d3=; B) 7...d5 8.c4 (8.Ba6 ba6 9.Qa4 de4 10.c4 f6 11.Nc3=; 8.ed5 Qd5 9.d4 Bh6 10.Qe2 Nf6 11.b5=; 8.e5 Bg7 9.Nf3 Bg4 10.d4 f6 11.Ba6=) 8...d4 9.Nf3 e5 10.b5 Nc5 11.Ne5=; C) 7...d6 8.d4 (8.Ba6 ba6 9.Qa4 Qb6 10.Nf3 Bg4 11.d4=; 8.Nf3 Nf6 9.Ba6 ba6 10.d3 Bg7 11.0-0=; 8.b5 Nc5 9.f3 Bg7 10.d4 Ne6 11.Bb2=; 8.Qc2 Bg7 9.d4 Nf6 10.Bd3 0-0 11.Nf3=) 8...Nf6 9.Nd2 Bg7 10.Ngf3 b5 11.Be2=; D) 7...Bg7 8.Ba6 (8.d4 Nf6 9.Nd2 0-0 10.Be2 b5 11.Ngf3=; 8.Na3 d5 9.ed5 Qd5 10.b5 cb5 11.Bb5=) 8...ba6 9.Qa4 Nf6 10.d3 Qb6 11.Nf3=.

7.Nf3 Nf6 8.b5 (8.d3 d5 9.Nbd2 Bg7 10.e3 0-0 11.Be2=; 8.Bb2 Bg7 9.e3 0-0 10.Be2 d5 11.0-0=; 8.e3 Bg7 9.Be2 0-0 10.0-0 d5 11.Na3=; 8.d4 Bg7 9.e3 0-0 10.Bd3 d5 11.0-0=) 8...Nc7 9.bc6 dc6 10.c4 Bg7 11.Be5=; 7...d5 8.e3 (8.b5 cb5 9.c4 Nf6 10.cb5 Nc5 11.Bf6=; 8.c4 Nf6 9.b5 cb5 10.cb5 Nc5 11.Bf6=; 8.Na3 Nf6 9.e3 Nc7 10.Be2 Bg7 11.Nc2=) 8...Bg7 9.Ba6 ba6 10.Qa4 Qb6 11.c4=.

7.Nf3 Bg7 8.b5 cb5 9.e4 b4 10.Be2 Qa5 11.Bb2=; 8.Na3 Nf6 9.e3 b5 10.Be2 0-0 11.0-0=; 8.Qb3 d5 9.e3 Qb6 10.d4 Nf6 11.Bd3=; 8.Qa4 b5 9.Qa3 Nf6 10.e3 d6 11.c4=.

7.Nf3 Bg7 8.d4 d5 (8...Nf6 9.e3 0-0 10.Bd3 d6 11.0-0=) 9.e3 Nf6 10.Bd3 (10.Nbd2 Qb6 11.Bd3=) 10...0-0 (10...Bf5 11.Bf5=) 11.0-0 (11.Nbd2=) 11...Bf5 12.Bf5 gf5 13.Bb2 Qd7 14.Nbd2 (14.Qd3 Ra8=) 14...Nc7 15.Ne5 Qe6 16.Nd3 Ra8 17.Qc2 Ne4 18.Nf4 Qd7 19.Ne4 (19.Ra1 Ra1 20.Ba1 b6=) 19...fe4 20.f3 Qf5 (20...ef3 21.Rf3 Qd6 22.e4=) 21.c4 e6 22.g4 (22.fe4 Qe4 23.Qe4 de4=) 22...Qg5 23.fe4 de4 (23...Qg4 24.Kh1=) 24.b5 (24.Qe4 Qg4 25.Kh1 Ne8+=) 24...cb5= 25.Qe4 Ra2 (worse 25...Qg4 26.Kh1 Ra2 27.Qb7+=; worse 25...bc4 26.Qb7 Qd8 27.Nh5=) ½–½. Pierre – 100le, internet, 2008.

6.c3 Qa7 7.Bb2 d5 8.Qb3 Nf6 9.h3 (9.Nf3!?=) 9...Bf5 10.d3 e6 (10...e5 11.Nf3 Bd6 12.Nbd2=+) 11.Qa3 Qa3 12.Ba3 Bd6 13.h4 (13.g4 Bg6=+) 13...Bg6 14.e3 0-0 15.b5 Ba3 16.Na3 Nbd7 17.bc6 bc6 18.Nf3 Ra8 19.Nc2 c5 20.Be2 (better 20.Kd2!?-/+) 20...c4!-+ 21.Nb4 (21.dc4 Bc2 Pinning (21...Bc2 Deflection)) 21...cd3 (21...Bd3!? 22.Bd1-+) 22.Bd1 Ne4 23.h5 Bf5 24.Nd4 Nc3 25.Nf5 ef5 (25...Ra1 26.Kd2 Ne4 27.Ke1 Rd1 28.Kd1 Nf2 29.Kd2 Nh1 30.Nd6-+) 26.Kd2? (26.Nd3 Ra1 27.Kd2 Ne4 28.Kc2-+) 26...Nd1?? (better 26...Ra3 27.Bf3 Ne4 28.Be4 de4-+) 27.Rd1-/+ g6 (27...Nf6 28.Rc1-/+) 28.Nd5 (28.Kd3 Nc5 29.Kd4 Ne4=+) 28...Ra2 (28...Nc5!?-/+) 29.Kd3=+ Rf2 30.Nf4 (30.h6!?=+) 30...Ne5 31.Kd4 Ng4 32.hg6 fg6 33.Rd3 Ra2 34.Nd5 (34.Rb3 Ra4 35.Kc5 Ne3 36.Ng6 Ng2 37.Ne7 Kf7 38.Nf5 Ra5 39.Rb5 Rb5 40.Kb5 h5-+) 34...Nf2 (34...Rg2!? 35.e4 Kg7 36.ef5 gf5 37.Rf3 Rd2 38.Kc5-+) 35.Rb3-/+ Ne4 36.g4 Rd2 (better 36...Ra4!? 37.Rb4 Rb4 38.Nb4 Ng3 39.gf5 Nf5 40.Ke4 Kf7-+) 37.Ke5= Nc5 38.Rb8 (38.Rb5 Nd7 39.Ke6 Nf8 40.Ke7 fg4 41.Nf6 Kg7 42.Ne8 Kh6 43.Kf8 g3=) 38...Kg7=+ 39.Kf4?? (better 39.Kd6 Ne4 40.Ke5 Rd5 41.Kd5 Nf6 42.Kd4 Ng4 43.Rb7 Kh6 44.Rf7=+) 39...fg4 (better 39...Rd5 40.Re8 h5 41.gh5 gh5-+) 40.Nc7 h5 41.Ne8 (41.Rb5 Rf2 42.Ke5 g3-+) 41...Kh6 42.Nf6 (42.Rb1 Nd3 43.Ke4 Nf2 44.Kf4 Nh3 45.Kg3 Rd3-+) 42...Ne6 (better 42...Rf2 43.Ke5 Rf6-+) 43.Kg3 Ng5 44.Ng8 (44.Rb7 Rd8 45.Rb6 Rd3-+) 44...Kg7 45.Ne7 Ra2 46.Nc6 Ra3 47.Rb7 (47.Kf4 Ne6 48.Ke4 h4-+) 47...Kh6 (47...Kf6 48.Nd4 Re3 49.Kf2-+) 48.Kf4 (48.Re7 Nf3 49.Ne5 Nd2-+) 48...Nh3 49.Ke4 Nf2 50.Kd4 (50.Kf4 h4 51.Nd4 g5 52.Kf5 g3 (52...Re3?! 53.Rb6 Kh7 54.Rb7 Kg8 55.Kf6-+) 53.Rb6 Kh5-+) 50…h4 0–1. beatmeeasy (1905) – Garath (1940), lichess.org, 2020.

6.c3 e6 7.e3 Nf6 8.Qb3 Qd8 (8...d5 9.Nf3=+) 9.c4 Be7 10.Nf3 0-0 11.Be2 b6 12.0-0 Na6 13.b5 Nc7? (better 13...cb5!? 14.Qb5 d5+=) 14.bc6+- dc6 15.Qb6 Na8 (15...Bd7+-) 16.Qc6 Bd7 17.Qa6 Nc7 18.Qa2 Bc5 (18...Bc6 19.d4+-) 19.Nc3 Nce8 (19...Qe7 20.d4 Bb4 21.Rb1+-) 20.d4 Qc7 (20...Be7+-) 21.dc5 Qc5 (21...Qc8 22.Qa5+-) 22.Qc2 (better 22.Bb2 Bc6 23.Ba3 Qa5 24.Bf8 Qa2 25.Na2 Bf3 26.Bf3 Kf8+-) 22...Bc6 23.Rd1 (23.Qd3 Bf3 24.Bf3 Qg5+-) 23...Nc7 (23...Bf3 24.Bf3 Qc4 25.Qa4+-) 24.Nd2 Qe7 25.Bf3 Ba8 26.Ba8 Ra8 27.Nf3 h6 28.Ne4 White prepares c5 28...Nd7 29.Qc3 f6 30.c5 Nf8 31.c6 Rc8 32.Nd4 Nd5 33.Qb3 Qd6 (33...Ra8 34.Bb2 Ra5 35.Nc3+-) 34.Ne6 (34.Nd6 Rc7 35.Ne6 Ne6 36.Qd5 Re7 37.c7 Rd7 38.Qe6 Kh8 39.c8Q Rd8 40.Qd8 Kh7 41.Qdg8 Kg6 42.Qf5) 34...Qe7 (34...Qe6 35.Nc5 Qc6 36.Rd5 Kh8+-) 35.Nf8 (better 35.N6c5 Rc7+-) 35...Qf8 (35...Qe4 36.Rd5 Rc6 37.Rd8 Qc4 38.Ne6 Kh7 39.Qc4 Rc4+-) 36.Qd5 Kh8 37.Nd6 Rc7 38.Bd4 (38.Nb5 Rc8+-) 38...Kh7 39.Rb1 h5 40.Rb7 Qd8 41.Rc7 Qc7 42.Ne8 Qa5 (42...Qe5 43.Be5 Kh6 44.Bf6 gf6 45.Qg8 h4 46.Qg7 Kh5 47.Nf6) 43.Qa5 Kh6 (43...Kg6 44.e4 h4 45.Qf5 Kh6 46.Be3 g5 47.Qf6 Kh5 48.Qg5) 44.Qf5 (44.Qc7 Kg5 45.f3 Kf5 46.Qg7 Ke6 47.Qd7) 44…h4 (44...h4 45.Bf6! gf6 46.Qf6 Kh5 47.Ng7 Kg4 48.h3). RichardSommer (1995) – Zacek (1900), lichess.org, 2020.

6.c3 Nf6 7.d4 g6 8.Nd2 d5 9.f3 (9.e3 Bf5=) 9...Bg7 (9...Bh6 10.e4=) 10.e3 0-0 11.Bd3 Nbd7 12.Ne2 e5 13.0-0 Re8 14.Bb2 (14.e4 h6=+) 14...ed4 (14...Bh6 15.e4-/+) 15.ed4=+ Nf8 (15...c5 16.dc5 Nc5 17.bc5 Qb2 18.Nb3=+) 16.Nb3 Ne6 17.Nc5 Nc5 18.dc5 Qc7 19.c4 Be6 20.cd5 Bd5 21.Nc3 (21.Bd4 Qe7=) 21...Be6 (21...Qf4 22.Be4=+) 22.Qc2 h5 (22...Qf4!? 23.Be4 A) worse 23...Ne4 24.Ne4 Qe3 25.Qf2 Qf2 26.Rf2+= (26.Kf2?? Bb2 27.Rd1 Ra8-+); B) 23...Nd5 24.Nd5 cd5 25.Bg7 Kg7 26.Qb2 Qf6 27.Qf6 Kf6=+) 23.Ne4+= Ne4 24.Be4 Bb2 25.Qb2 Rd8 26.h3 (26.Re1 Qd7=) 26...Qg3 27.Qf2 (27.Kh1 Qf4 28.Ra1 Kh7=) 27...h4 (27...Qf2 28.Kf2 f5 29.Bb1 Rd2 30.Kg1-/+) 28.Qg3 (28.Re1!?=) 28...hg3=+ 29.Rb1 f5 30.Bc2 Rd2 31.Ba4 Ra2 32.Bd1 f4 33.Kf1 Rf2 34.Kg1 Bc4 (34...Bf5 35.Ra1 Rb2 36.Kf1-+) 35.Ba4 (35.Bb3 Bb3 36.Rb3 Kf7-/+) 35...Ra2 36.Bd1 Kg7 37.Rc1 Bb5 38.Bc2 Kf6 (better 38...Rb2!?-+) 39.Be4=+ g5 40.Rd1 Rb2 41.Rd6? (41.Rb1 Rb1 42.Bb1-+) 41...Ke5-+ 42.Rd1 Rb4 43.Re1 Kd4 44.Bf5 Kc5 45.h4 (45.Rc1 Rc4 46.Ra1-+) 45...gh4 46.Bg4 (46.Rc1 Rc4 47.Rd1 Rd4 48.Rd4 Kd4-+) 46...Rd4 47.Re5 Rd5 48.Re1 Bc4 49.Bf5 (49.Be6 Rd4 50.Rc1 b5-+) 49...b5 (better 49...Rf5 50.Rd1 Rd5 51.Ra1-+) 50.Be4 (50.Be6 Rd2 51.Bf5 b4-+) 50...Rd4 51.Kh1 (51.Bc2 Rd2 52.Bg6 b4-+) 51...b4 52.Rg1 b3 53.Bb1 (53.Rb1 Rd2-+) 53...Kb4 54.Be4 Rd2 55.Bb1 (55.Rb1 c5-+) 55...Kc3 (better 55...h3 56.Bg6-+) 56.Bf5 (56.Rc1 Kd4-+) 56…b2 (56...b2 57.Be4 Bd3 58.Bc6 b1Q 59.Rb1 Bb1 60.Ba4 Re2 61.Bb5 Re1 62.Bf1 Rf1) 0–1. TwelveTeen (2690) – BabaRamdev (2845), Time forfeit, 2018.

6.Bc3 d5 7.e3 e6 8.Nf3 Bb4?? (better 8...f6=) 9.Bg7+- Ne7 10.Bh8 Nd7 11.Bd4 f6 (11...Qc7 12.Bg7+-) 12.Ba1 (better 12.Bb6 Nb6 13.Nh4+-) 12...c5 13.Nc3 Ba5 14.Bd3 c4 15.Bh7 (better 15.Be2 e5+-) 15...Qc7 (15...Nf8 16.Ng1 Kf7 17.Na4+-) 16.Nd4 Bb6 (16...Nf8 17.Qh5 Kd8+-) 17.Ne6 (17.Qh5 Ng6 18.Bg6 Kd8 19.Qh8 Ke7 20.Qe8 Kd6 21.Ncb5 Kc5 22.Qe7 Qd6 23.Qd6) 17...Qd6 (17...Qe5 18.Bf5! Nf5 19.Qh5 Ke7+-) 18.Qh5 Ng6 19.Qg6 (19.Bg6 Ke7 20.Qh7 Ke6 21.Qf7 Ke5 22.f4) 19...Ke7 20.Ng7 (20.Qg7 Ke6 21.Bg8 Kf5 22.g4 Ke5 23.f4) 20...Ne5 21.Nf5 (21.Qe8) 21...Ke6 22.Nd6 (22.Qe8 Qe7 23.Qe7) 22...Kd6 23.Qf6 Be6 24.Qe5! Ke5 25.Nb5 (better 25.Na4 Kd6 26.Nb6 Kc7+-) 25...d4 26.ed4 Kd5 27.f3 Bc7 28.Be4 1–0. FeegLood (2400) – hackqueboardt (1840), lichess.org, 2015.

6.Bc3 d5 7.e3 Bf5 8.Nf3 e6 9.Be2 Bb4?? (better 9...Bg4=) 10.Bg7+- Ne7 11.Bh8 Kd7 (11...Nd7 12.0-0+-) 12.Ba1 1–0. FeegLood (2560) – dorian11 (2285), lichess.org, 2015.

6.Bc3 d5 7.Nf3 Nf6 8.Bf6 ef6 9.c3 Bd6 10.e3 Bf5 11.Na3 0-0 12.h3 Nd7 13.g4 Bg6 14.Nh4 Ra8 15.Ng6 hg6 16.Nc2 Ne5 17.Be2 Ra2 18.f4 Nd7 19.Qb1 Ra8 20.0-0 Re8 21.Bf3 Bf4 22.Kg2 Bc7 23.Qa1 Bb8 24.Nd4 Qc7 25.Ne2 Qh2 0–1. inSecOP (2325) – BeepBeepImAJeep (2535), lichess.org, 2019.

6.Bc3 e6 7.Qc1 Bb4?? (better 7...Na6-/+) 8.Bg7+- f6 9.Bh8 Kf7 10.Nf3 (10.c3 Bd6 11.Qc2 f5+-) 10...d5 (10...Ne7 11.Bf6! Kf6 12.Qb2 Kf7 13.Ng5 Kg6 14.Qh8+-) 11.e3 (11.c3!? Bd6 12.Qc2 f5+-) 11...e5 (11...Ne7 12.c3 Bd6 13.Qc2+-) 12.Be2 (better 12.Qd1 Nd7 13.g4 Ne7+-) 12...Be6 (12...Ne7 13.c4 e4 14.Qc2+-) 13.Ne5! fe5 14.Be5 Nd7 15.Qb2 (15.f4 Nh6+-) 15...Ne7 (15...Bf5 16.Bc3 Bd6 17.Bd3 Qb2 18.Bb2 Bd3 19.cd3+-) 16.0-0 Qa5 (16...Bc5 17.Qb6 Bb6 18.Bd4+-) 17.Bc3 Bc3 18.Qc3 (18.Nc3 b5+-) 18...Qc7 19.d4 Nf8 (19...Nf6 20.f3+-) 20.Bd3 Nfg6 21.f3 Nf5 22.Bf5 Bf5 23.Nd2 Qe7 24.e4 de4 (24...Nf4 25.Re1 Bd7+-) 25.fe4 Kg8 (25...Qh4 26.Rf5 Kg8 27.Qb3 Kh8 28.Rf7+-) 26.Rf5 (26.ef5 Nf8 27.f6 Qd8 28.f7 Kg7 29.d5 Kh6 30.Rf6 Ng6 31.Qe3 Kg7 32.Rg6 hg6 33.Qe8 Qb6 34.Kh1 Qf2 35.Qg8 Kh6 36.Qh8 Kg5 37.Ne4 Kf4 38.f8Q Ke4 39.Qe7 Kd5 40.Qhd8 Kc4 41.Qd3) 26...Nh4 (26...Kg7 27.d5 Kg8 28.Nf3 cd5 29.Ng5+-) 27.Qg3 Ng6 28.Rg5 (better 28.Nf3!? b6 29.h4 Qe6+-) 28...Qb4 (28...Qd8 29.Nf3 Kf8 30.h4+-) 29.Qf2 Qe7 (29...Qf8 30.Qf8 Kf8 31.Nc4+-) 30.h4 Kh8 31.Nc4 Qe4 32.h5 (32.Ne5 Qe5 33.de5 Kg7 34.e6 Kh8 35.e7 h5 36.e8Q Kh7 37.Rg6 b5 38.Qff7) 32...Nf4 33.Re5 (33.Nd6 Qe7 34.Qf4 h6 35.Re5 Qe5 36.Qe5 Kg8 37.Nf5 Kf7 38.Qe7 Kg8 39.Qg7) 33...Ne2 34.Qe2 (34.Qe2 Qe2 35.Re2+-) 1–0. Darkseid (1760) – boa (1785), ChessWorld.net, 2005.

6.Bc3 Nf6 7.e3 d5 8.b5 e6 9.Nf3 Be7 10.g4 (10.Be2 0-0=) 10...Ne4 (better 10...0-0!?=+) 11.Bg7= Rg8 12.Bd4 Rg4?? (better 12...c5 13.Be5 Nd7=) 13.Bb6+- 1–0. FeegLood (2580) – Seppo (2360), lichess.org, 2015.

6.Bc3 Nf6 7.Nf3 Na6 8.e3 (8.Bf6 ef6 9.c3 d5=) 8...Nb4=+ 9.Be2 Nbd5 10.0-0 e6 11.Bd4 Bc5 12.Bc5 Qc5 13.d4 Qb6 (13...Qe7 14.c4 Nb4 15.Qb3=) 14.c4 Ne7 15.Nc3 0-0 16.Qc2 d5 (16...d6 17.Ne4 Ne4 18.Qe4=+) 17.c5+= Qc7 18.h3 b6 19.Na4 (19.cb6 Qb6 20.Na4 Qc7+=) 19...bc5 20.Nc5 Ng6 21.Bd3 e5 (better 21...Nd7!?+=) 22.Bg6+- fg6 23.Ne5 Bf5 24.Qd2 (24.Qa4 Rc8+-) 24...Ne4 25.Ne4 Be4 26.Rc1 Rf6 27.Qc3 Bf5 (27...Qc8 28.Qc5+-) 28.Nc6 Qd6 (28...Rf8 29.Qb4 Re8 30.Qc5+-) 29.Ne5 (29.Qc5 Qc5 30.Rc5 Kf7+-) 29...h6 30.g4 (30.Qc5 g5+-) 30...Bd7 (better 30...Be6+-) 31.Nd7 Qd7 32.Qc8 Qc8 33.Rc8 Kh7 (33...Kf7 34.Rc7 Ke8 35.Rg7+-) 34.Re8 (better 34.Rd8!? g5+-) 34...Rd6 35.f4 Rd7 36.Re5 White plans g5 36...Kg8 37.Kf2 Kf7 38.h4 White prepares the advance g5 38...Kf6 39.g5 Kf7 40.Kf3 Rd8 41.e4 de4 42.Ke4 The passed pawn on d4 quickly leads to threats 42...Rd7 43.f5 (43.d5 Rd8+-) 43...gf5 44.Rf5 Kg6 (44...Ke7 45.Re5 Kf7 46.h5+-) 45.gh6 gh6 46.h5 Kg7 47.d5 Rd8 48.Ke5 Ra8 (48...Re8 49.Kd6 Rc8 50.Ke7 Rc7 51.Ke6+-) 49.Rf6 (better 49.d6 Rd8 50.Ke6 Re8 51.Kd7 Re1+-) 49...Ra1 50.Rg6 (50.Rg6 Kf7 51.Rh6 Re1 52.Kd6+-) 1–0. retiponziani (1780) – OrangAttackMan (1880), ChessWorld.net, 2010.

6.e3 Qb4 7.c4 Nf6 8.Nf3 d6 9.Be2 e5 10.0-0 Be7. Baronov–Bochkarov, 1998.

6.d4 Nf6 7.Nf3 Bf5 8.Ne5 e6-/+ 9.c3 Bd6 10.Nf3 Nbd7 11.g3 0-0 12.Bg2 (12.Nbd2 e5-/+ (12...Qc7 13.Nh4-/+ –0.94) 13.de5-/+; 12.Nh4 Bg4 13.h3-/+) 12...Qa8 (12...Qe7 13.0-0-/+) 13.Nbd2 Qa2 14.0-0 Ra8 15.h3 (15.Ng5 Bc2 16.Qc1 h6-/+) 15...h6 (15...b6 16.Qe1-/+) 16.Qb3 (16.Re1 b6-/+) 16...b6 17.Qd1 Qc2 18.Qc2 Bc2 19.Rc1 (19.Bb2 Ra2 20.Bc1 Bf5-/+) 19...Ra2 20.Ne1 (20.Kh2 Ne4 21.Ne4 Be4-/+) 20...Bg6 21.Nef3 Ne4 22.Ne4 Be4 23.e3 Kf8 24.Kf1 Ke7 25.g4 Bd3 26.Kg1 f5 27.Ne1 Bc4-+ 28.Bf1 Bf1 29.Kf1 fg4 30.hg4 e5 31.Nd3 e4 32.Nb2 g6 33.Ke2 Nf6 34.f3 ef3 35.Kf3 Ne4 0–1. Baer,Cy (1895) – Vehlow,Burkhard (2150), RSS4D easy–54, 2007.

6.e3 b5 7.Nf3 Bg4 8.Be2 Nd7 9.Nd4 Be2 10.Qe2 Qa8 11.Nb3 Ngf6 12.0-0 e6 13.Bc3 Bd6 14.d3 0-0 15.N1d2 Qb8 16.h3 Nb6 (better 16...e5!?=) 17.Bf6+= gf6 18.c4 (18.c3 Na4+=) 18...Bb4 (18...bc4!? 19.dc4 Bb4=+) 19.cb5+= Bd2 20.Nd2 cb5 21.Rb1 Na4 22.Qg4 Kh8 23.Qh4 Qe5 (23...Kg7 24.Rb4 Rg8 25.Rg4 Kf8 26.Rg8 (worse 26.Qh7 Rg4 27.hg4 Qc7=+) 26...Kg8 27.Qf6=) 24.Nf3 Qf5 25.Rb5 Rg8 26.Kh2 Nc3 27.Rb3 Ne2 28.Rb2 Nc1 29.e4?? (better 29.Rd2=) 29...Qg6-/+ 30.g3 Nd3 31.Re2 de4 32.Re4 Nf2 33.Rf4 f5 (33...Nd1 34.Qf6 Qf6 35.Rf6-/+) 34.Ne5 Qg7 35.Nf7 Qf7 36.Rf2 Rf8 37.Qf4 Qf6 38.Re2 Re8 39.Re3 e5 40.Qf3 Rf8 41.Re2 f4 42.g4 Qe6 43.Qe4 Re8 44.Rf2 Qf6 45.Kg2 Re7 46.Rf3 Kg7 47.Qa8 (47.Kf1 Rd7-+) 47...Qg6 (47...e4!? 48.Rf2-+) 48.Rf2 Rf7 (48...h5 49.Qf3-+) 49.Qa3 (49.Qd5!? Qg5 50.Kf1-/+) 49...e4 50.Qc3 Qf6 51.Qf6 Rf6 (worse 51...Kf6 52.Rf4 Ke6 53.Re4 Kd5 54.Re8+-) 52.Re2?? (52.h4-+) 52...f3 53.Kf2 fe2 54.Ke2 Rf3 0–1. TwelveTeen (2545) – papasi (2495), Time forfeit, 2018.

6.e3 Qb6 7.b5 Nf6 8.c4 Bf5 (8...Bg4 9.Nf3 Nbd7 10.Nc3 e6 11.Qa4 Bf3 12.gf3 Bd6 13.Qa8 Bb8) 9.Nc3 (9.Bd4 Qc7 10.Nf3 Nbd7 11.cd5 Nd5 12.Nh4 c5 13.Bg7 Bg7) 9...e6 (9...Nbd7 10.Nf3 e5 11.Qa4 Be7 12.d4 e4 13.bc6 bc6) 10.Nf3 Nbd7 (10...Bg6 11.Be2 Nbd7 12.Qa4 Nc5 13.Qa8 Qd8) 11.Nd4 Bg6 (11...Bg4 12.f3 Bh5 13.g4 Bg6) 12.Na4 (12.bc6 bc6 13.Qa4 Bd6) 12...Qc7 13.bc6 (13.cd5 Nd5) 13...bc6 14.cd5 cd5 15.f4 Be7 16.Bb5 0-0 17.Nc6 Bd6 18.0-0 Ne4 19.Qc1 Qb7 20.Qb2 Ndf6 21.Ne5 Rb8-/+ 22.Ng6 Qb5 23.Qb5 Rb5 24.Ne5 Nd2 25.Rc1 Rb1 26.Rb1 Nb1 27.h3 Ne4 28.Nd3 Nbd2 29.Bd4 f6 30.Ndc5 Kf7 31.Ne4 Ne4 32.Nc3 Nc3 33.Bc3 Ke7 34.Kf2 Kd7 35.Ke2 Kc6 36.Kd3 Kb5 37.g4 Bf8 38.e4 Kc6 39.h4 Bd6 40.f5 e5 41.h5 h6 42.Bd2 Ba3 43.Be1 Kc5 44.Bf2 d4 45.Bh4 Kb5 46.Bg3 Bb4 47.Bf2 Bc5 48.Be1 Bb6 49.Bf2 Kb4 50.Be1 Kb3 51.Bd2 Bd8 52.Be1 Be7 53.Bf2 Bb4 54.Bg3 Kb2 55.Bf2 Kc1 56.Bh4 Kd1 57.Bg3 Bd2 58.Bf2 Be1 59.Bd4 ed4 60.e5 fe5 61.g5 Bb4 62.Ke4 Ke2 63.f6 gf6 64.gh6 Bf8 65.h7 Bg7 66.Kf5 d3 67.Kg6 Bh8 68.Kf7 d2 69.Kg8 d1Q 70.Kh8 Qh1 (70...Qh1 71.Kg7 Qh5 72.Kf6 Qh7 73.Ke5 Qd3-+) 0–1. Pappas,K (2090) – Papadakis,M (2120), 5th Gazi Open, Heraklion GRE, 2009.

6.e3 Qb6 7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

6.e3 Nd7 7.c4 e6 8.c5 b6 9.d4 bc5 10.bc5 e5 11.Nf3 ed4 12.ed4 Ngf6 13.Bd3 Be7 14.0-0 0-0 15.Nc3 Qa5 16.Qa4 Qa4 17.Na4 Ne4 18.Re1 f5 19.Rd1 Bb7 20.Nc3 Ra8 21.Ne5 Ne5 22.de5 Bc5 23.Ne4 fe4 24.Be2 Ra2 25.Kf1 Kf7 26.Bc3 Ba6 27.Re1 Be2 28.Re2 Re2 29.Ke2 d4 0–1. phildo (1865) – cecherino (1925), gameknot.com, 2012.

6.e3 e6 7.b5 Nf6 8.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3).

6.e3 f6 7.c4 e5 8.Nf3 (8.b5 Be6=+) 8...Be6 (8...e4 9.Nd4 Bb4 10.cd5 Qd5 11.Nc3 Bc3 12.Bc3=+) 9.cd5 (9.c5 Bg4=) 9...cd5 10.b5 Ne7 11.Be2 Ng6 12.0-0 Bd6 13.d4 e4 14.Nfd2 0-0 15.g3 f5 16.Nc3 Nd7 17.Qb3 Nb6 18.f4 (18.Bb2 Qe7=+) 18...ef3 19.Bf3 The pressure on the isolated pawn grows 19...Qd7 (19...Qg5 20.Ne2=+ (20.Nd5? Nh4-+)) 20.Nd5 (20.Bb2 Ra8=) 20...Qf7 (20...Qd8 21.Nb1 f4 22.ef4 Bf4 23.gf4 Nd5 24.Kh1=+) 21.e4= fe4 (21...f4 22.Bg2=) 22.Be4 (better 22.Bg4 Bd5 23.Rf7 Bb3 24.Rb7+-) 22...Bd5?? (22...Nf4 23.Qb1 Bd5 24.gf4 Bf4-/+) 23.Rf7+- Bb3 24.Rf8 Nf8 25.Nb3 Kf7 26.Bb7 g6 27.Nc5 Ne6 28.Ne6 Ke6 29.Bc6 Bb4 30.Kf2 Kd6 31.Ke3 Nc4 (31...Nd5 32.Ke4 Nf6 33.Kd3+-) 32.Kd3 Na5 (32...Nb6 33.Ke4+-) 33.Bf3 Nb3 Black gets the initiative 34.Bb2 Ba5 35.Kc4 (better 35.g4+-) 35...Nd2=+ 36.Kd3 Nf3 37.Ke4 (37.Kc4 Nh2 38.Bc1 Bc7 39.Bf4 Kd7-+) 37...Nd2 38.Kd3 Nb3?? (38...Kd5 39.Bc3 Bc3 40.Kc3-+) 39.Ba3?? (39.Kc4 Nd2 40.Kd3-+) 39...Kd5-+ 40.Bb2 Bb6 41.h3 (41.Kc3 Nd4 42.Kb4 Nf3-+) 41...Nd4 42.Bc3 Nb5 43.Bd2 Nd4 44.Ke3 Bc5 45.Kf4 (45.g4 g5-+) 45...Ne2 (45...Bd6 46.Ke3 Bg3 47.Bc3-+) 46.Kg4 (46.Kf3 Ng1 47.Kg2 Ke4-+) 46...Bd6 47.Be1 Ng3 (better 47...Ke4 48.Kg5 Kf3-+) 48.Bg3 Bg3 49.Kg3 Ke5 (better 49...Ke4 50.Kg4 h6-+) 50.Kg4 h6 51.Kh4 (51.Kf3 h5 52.h4-/+) 51...Ke4 52.Kg4 Ke5 (52...Ke3 53.Kg3 h5-+) 53.Kg3 (53.Kh4 Kd4 54.Kg4-+) 53...Kf5 54.Kf3 Kg5 55.Kg3 (55.Kg3 Kf6 56.Kg4-+). BeepBeepImAJeep (2490) – auditor2016 (2350), lichess.org, 2017.

6.e3 f6 7.Bd3 (7.b5 e5=) 7...e5 (7...Nh6 8.f4=) 8.Qh5 Ke7 9.Bh7 Na6 (9...Qd6 10.c3=) 10.c3+= b5 (10...c5 11.d4 ed4 12.ed4 (< 12.cd4 Nb4 13.Bc3 Nd3 14.Kf1 Qb6-/+) 12...cb4 13.Qe2 Kf7 14.Qh5 Ke7 15.Qe2 Kf7 16.Qh5 Ke7=) 11.Nf3 (11.Ne2 Be6+=) 11...Nh6 12.Bc2 Bg4 (12...Nf7 13.Qg6+=) 13.Qg6 Bf3 (13...Qd7 14.Bb2+=) 14.gf3 Qe8 (14...Nf7 15.Qg4+=) 15.Qg3 g5 16.Qh3 (16.Bb2 Kd8+=) 16...Qd7 (16...Kd8 17.Qg2+=) 17.Qg2 (better is 17.Qd7 Kd7 18.h4+=) 17...f5? (better is 17...Nf7+=) 18.Qg5+- Ke8 19.Qf6 (19.Qg6 Ke7+-) 19...Qg7?? (better is 19...Bg7 20.Qg6 Kd8+-) 20.Qc6+- (20...Kd8 21.Qa6+-) 1–0. Wall,Bill – Oozzee, internet, 2005.

6.Nf3 Na6 7.b5 cb5 8.e3 Qa5 9.Nc3 b4 10.Nb5 e6?? (10...Bd7 11.Nbd4=) 11.Be2?? (11.Nd6! Bd6 12.Bg7 Nf6 13.Bh8 Ne4+-) 11...Bd7? (11...Nf6 12.Ne5=) 12.Nbd4?? (better 12.Nd6 Ke7 13.Ne5+/-) 12...Bc5?? (better 12...Nf6=+) 13.Nb3+- Qc7 14.Bg7 Be7 15.Bh8 f6 (15...Nf6 16.Bd3 Ba4 17.Nfd4+-) 16.g4 (16.Bd3 Nh6+-) 16...Kf7 (16...Nh6 17.g5! fg5 18.Ne5+-) 17.g5! fg5 (17...e5 18.Bd3 e4 19.Nfd4+-) 18.Ne5 (18.h4 g4 19.Ng5 Ke8 20.Bg4 Bf6 21.Be6 Be6 22.Ne6 Qe5 23.Bf6 Nf6+-) 18...Ke8 19.Ba6 ba6 20.Qh5 Kd8 21.Qh7 (21.Nd4 Qc8+-) 21...Nf6 22.Bf6 Bf6 23.Qd7 Qd7 24.Nd7 Kd7 25.Ke2 Be7 (25...Kc6 26.Nd4 Kb6 27.Ne6+-) 26.Ra1 a5 (26...Bd6 27.Ra6 Bh2 28.Nc5 Ke8 29.Ne6+-) 27.Ra5 Ke8 (27...Bd6 28.Ra7 Kc8 29.Nd4 Bh2 30.Ne6+-) 28.Nd4 Bf6 (28...Bd8 29.Ra8 Kd7 30.Ra7 Kd6 31.Ra6 Kd7 32.Ne6+-) 29.Ne6 Kf7 30.Nc7 (better 30.Ra6 d4+-) 30...Kg6 31.Nd5 Kf5 32.Nf6 Kf6 33.Kf3 Kg6 34.Kg4 b3 35.Ra6 (35.Ra6 Kf7 36.cb3 Kg7 37.Kf5 Kf8 38.Kf6 Ke8 39.Rd6 g4 40.e4 g3 41.fg3 Kf8 42.Rd8) 1-0. Lance5500 (2610) - Alexander_Sichkar (2170), lichess.org, 2017.

6.Nf3 Na6 7.Bc3 =.

6.Nf3 Bf5 7.c3 Nd7 8.d4 Ngf6 9.Nbd2 e6 10.Nh4 Bg6 11.Ng6 hg6 12.e3 Bd6 13.Bb2 e5 (< 13...Bh2 14.Bd3+/–) 14.b5 ed4 15.cd4 Qa8 (< 15...Bh2 16.g3+=; < 15...Rh2 16.Rh2 Bh2 17.g3+=) 16.bc6 bc6 17.Qc2 0-0 18.Be2 c5 19.dc5 Nc5 20.0-0 Qa4 21.Qa4 Na4 22.Bd4 Nc5 23.Rd1 Nce4 24.Ne4 Ne4 25.f3 Nf6 26.e4! Bb4 (26...Ne4 27.fe4) 27.e5 Nd7 28.f4 Rd8 29.Bf2 Nc5 30.Bf3 d4 31.Rd4 Rd4 32.Bd4 Ne6 33.Be3 f5 34.Bd5 Kf7 35.Kf2 Ke7 36.h4 Nc7 37.Bc4 Ne6 38.g4 Ba5 (38...Bc3+-) 39.h5 fg4 (39...g5 40.gf5 gf4 41.Bc1+- (41.Be6?! fe3 42.Ke3 Bb6 43.Ke4 Bd8+-; 41.fe6?! fe3 42.Ke3 Bc3+/–)) 40.hg6 (40...Bc3 41.f5+-) 1–0. orane (2200) – 300SPARTANS, Live Game Caissa's Web, 2004.

6.Nf3 Bf5 7.c3 Nf6 8.d4 Na6 9.e3 e6 10.Be2 Bd6 11.Nbd2 0-0 12.0-0 Bc7 13.Ne5 Be5 14.de5 Nd7 15.f4 Qb6 16.Rf3 Bg4 17.Rf2 Be2 18.Qe2 Ra8 19.Qd1 c5 20.bc5 Nac5 21.c4 Qb4 22.Bd4 Ra2 23.Bc5 Nc5 1–0. Pleschke – Romischke, 1996.

6.Nf3 f6 7.e3 e5 8.d3 (8.Ne5 fe5 9.Qh5 Ke7 10.Be5-+) 8...Bb4-/+ 9.c3 Bd6 10.Be2 Ne7 11.e4 0-0 12.ed5 Nd5 13.0-0 Be6 14.d4 (14.Nbd2 Nf4-/+) 14...Nd7 (14...e4!? 15.Nfd2 f5 16.Nc4-+) 15.de5 Ne5 16.c4 (16.Nd4!? Qe7 17.Re1-/+) 16...Nf4-+ 17.Ne5 Be5 18.Be5 fe5 19.Qc2 (19.c5-+) 19...Ne2 (better is 19...Qd4 20.Bf3 Nh3 21.gh3 Rf3-+) 20.Qe2-/+ Qd4 21.Rc1 Rd8 22.h3 (22.c5 Rd5-+) 22...e4 23.c5-/+ Rd5 24.Qa2?? Kf7 25.Qb3 Rd7 26.Qg3 Qf6 27.Nc3= Bd5 28.Nd5 cd5-/+ 29.Rd1 g6 30.Qb3 Qc6 31.Qe3 Qe6 32.Qh6 Kg8 33.Qe3 Qf5 34.Qa3 d4-/+ 35.Qb3 Qd5 Black prepares the advance d3 36.Qb6 Kg7 37.Re1 d3 38.Qb2 Qd4 39.Qd2 Re7 40.Kh2 Qc5 41.Re3 b5 42.Qe1 Qd4 43.Qd2 b4 44.f3 Qc3 (45.Qd1 b3 46.fe4 b2-+) 0–1. coolerdude – Bury born and bred, ChessWorld.net, 2004.

6.Nf3 Bg4 7.Ne5 Bh5 8.g4 Bg6 9.h4 (9.Bg2 e6=) 9...h6 (9...Qd6 10.Bg2=) 10.Ng6+= fg6 11.e3 (11.b5 Qd6+=) 11...e6 (11...Qd6 12.f4 Nd7 13.b5=) 12.Bd3 Ne7 13.c4 (13.Bd4 Nd7+=) 13...Nd7 (13...Na6 14.Qa4+=) 14.Qc2 Nf6 (14...Kf7 15.cd5 ed5 16.Bd4+=) 15.Nc3 (15.Bg6 Kd7 16.Bf6 gf6+-) 15...Ng4 (15...Kf7!?+=) 16.Bg6+- Kd7 17.cd5 (17.Na4 Ng6 18.Qg6 Nf6 19.Nc5 Bc5 20.Qg7 Be7 21.Bf6 Rf8 22.Be7 Qe7 23.Qe7 Ke7 24.cd5 cd5+-) 17...Nd5 (17...cd5 18.Qa4 Nc6 19.b5+-) 18.Nd5+- cd5 19.Qa4 (19.Bd4 Qc7 20.Qa4 Qc6+-) 19...Ke7 20.Ke2 (20.Rg1 h5+-) 20...Kd6 (better 20...Qd7!? 21.Qd7 Kd7+=) 21.b5+- Ne5?? (better 21...h5+-) 22.Be5 Ke7 23.Rc1 (23.Rc1 d4 24.Qb4 Kd7 25.Qd4 Ke7 26.Rc7 Qc7 27.Bc7 e5 28.Qd6) 1–0. pcmvr – rbeckett, net–chess.com, 2017.

6.g3 Qb6=+ 7.c3 Bf5 8.d4 Qa7 (8...e6 9.Nf3=+) 9.Nd2 e6 10.Bh3 Bg6 11.Ngf3 Nd7 12.0-0 (12.Nh4 Ngf6=+) 12...Ngf6=+ 13.Ne5 (13.Bb2 Bd6=+) 13...Ne5 14.de5 Nd7 15.Nf3 Be7 16.Qd4 (16.Bb2 b5-/+) 16...c5 (16...Qd4!? 17.cd4 Bb4 18.Rc1-+) 17.bc5 Bc5 18.Qd2 (18.Qd1 b5-/+) 18...0-0 (18...Bf2 19.Rf2 Qa1 20.Rf1-+) 19.e3 Ra8 (better 19...Rd8!?-+) 20.c4=+ Be4 (20...Nb6 21.cd5 Nd5 22.Bd4=) 21.Bg2 (21.Ng5 Qa4=) 21...Nb6 22.cd5 Bd5 23.Bd4 Nc4 24.Bc5 Qc5 25.Qd4 Qc6 (25...Qd4 26.ed4 f6 27.ef6 gf6 28.Rb1=+) 26.Nh4 (26.Qf4 Qd7=) 26...Bg2-/+ 27.Ng2 b5 28.Rd1 h6 29.f4 Ra2 30.Qd8 Kh7 31.Qd3 g6 32.Rc1?? (better 32.Ne1-/+) 32…Qg2 0-1. ban_ban (1670) – BeepBeepImAJeep, lichess.org, 2017.

7.c4 dc4 8.Bc4 Qd6 9.d3 (9.Qf3 e6 10.e4 Qb4-/+) 9...b5 10.Ba2 Bd3 11.Qg4 f5 12.Qh5 g6 13.Qh4 e5 14.Bc3 (14.Nd2 Ne7-/+ (14...Qb4? 15.Qb4 Bb4 16.Be5+-)) 14...Nf6-+ 15.Nf3 Nd5?? (15...Ne4!? 16.Ne5 Be7-+) 16.Be5 (16.Bd5 A) < 16...Bb1 17.Be5 Qd5 18.Bh8+/– (18.Bb8? Bd3 19.Qd4 Qd4 20.ed4 Bb4 21.Kd1 Ke7-+); B) 16...cd5 17.Be5 Qb4 18.Nc3 Qb2=) 16...Qb4=+ 17.Qb4 Bb4 (17...Nb4? 18.Kd2 (18.Bh8?! Na2 19.Kd2 Be4=) 18...Be4 19.Be6+/– (19.Bh8?! Na2 20.Rd1 Bb4 21.Nc3 c5=)) 18.Nbd2 0-0 19.Nd4 Bc4 20.Bb8 (better is 20.Bc4!? bc4 21.Ke2 Bd2 22.Kd2 c3 23.Kc2=+) 20...Ba2-+ 21.Be5 Ne7 22.Ke2 Bd2 23.Kd2-/+ Bd5 24.f3 Ra8 25.Rc1 h6 26.Bf6 Kf7 27.Bh4 g5 28.Bg3 Kf6 29.h3 Ra2 30.Rc2 Rc2 31.Kc2 Kg6 32.Be1 Bc4-+ 33.Bb4 Nd5 34.Bd2 c5 35.Ne6 Bf1 36.Nc5 Bg2 37.e4 Ne7 38.Kd3 Bh3 (39.Kd4 Bg2-+) 0–1. Romischke,W – Kern,M, Hessen clubgame, 1997.

7.d3 Na6 8.c3 e5 9.Nf3 Bd6 10.Be2 Nf6 11.0-0 0-0 12.Nh4 Be6 13.Nf3 Qc7 14.h3 e4 15.de4 de4 16.Nd4 Bd7 17.Nc6? (better is 17.Nd2=+) 17...bc6-+ (17...Qc6?! 18.b5 Qc5 19.ba6-/+; 17...Bc6?! 18.b5-/+) 18.Ba6 Ra8 19.Qe2 Qb6 20.c4 Bb4 (20...Qa6?! 21.Bf6 Be6 22.b5=; 20...Ra6?! 21.c5 Qb5 22.Qb5 cb5 23.Bf6 gf6 24.cd6 Rd6 25.Nc3=) 21.Rd1 Bh3 (21...Ra6?! 22.Bf6 Qb7 23.Bc3=) 22.gh3 Be7 (< 22...Ra6 23.Bf6 gf6 24.Qg4 Kh8 25.Kh1+=) 23.Bf6 Bf6 24.Bb5 cb5 25.cb5 Rb8 26.Nd2 Qb5 27.Qb5 (27.Ne4?? Qe2 28.Rc1 Bd4 29.ed4 Qe4-+) 27...Rb5 28.Ne4 Be7 29.Rd7 Kf8 30.Nc3 Rg5 31.Kh2 Rc5 32.Nd5 Bh4 33.f4 Ke8 34.Rd6 f5 35.Nb4 Rb5 36.Nd5 Kf7 37.Kg1 Rb1 38.Kg2 Rd1 39.Rd7 Ke6 40.Rg7 Rd5 41.Rh7 Rd2 42.Kf1 Be7 43.Rh6 Kd5 44.Rh7 Bc5 45.Rd7 Bd6 46.Rd8 Ke4 47.Ke1 Bb4 48.Rd2 Ke3 (49.Kf1 Bd2-+) 0–1. Bonetti,Shane – Tinker (2450), ICC, 2002.

7.d3 e6 8.Nd2 Nf6 9.c3 Bd6 10.Ngf3 0-0 11.Be2 e5 12.Qb3 Qe7 13.Nf1 Nbd7 14.Ng3 Bg6 15.Nh4 Qe6 16.e4 Ra8 17.0-0 c5 (better is 17...Nf8!?=+) 18.Ng6+= hg6 (< 18...fg6 19.ed5 Qe7 20.b5+/–) 19.ed5 Qd5 20.Qd5 Nd5 21.Bf3 Nf4 22.Ne4 Be7 23.Nc5 Bc5 24.bc5 Nc5 25.d4 Nb3 26.g3 Nd2?? (better is 26...e4 27.Be4 Ne2 28.Kg2 Ra1 29.Ra1 Na1 30.Bb7 Nc3-+) 27.Bb7+/– Ra7 28.Rd1 Ne2 29.Kg2 Nb3 30.Bf3 ed4 31.Be2 Na1 32.Rd4 Kf8 33.Bd1 Ke7 34.Ra4 Ra4 35.Ba4 Kd6 36.Kf3 Kc5 37.Ke3 Kc4 38.Kd2 g5 39.h3 (better is 39.Be8!? Nb3 40.Kc2 Nc5 41.Bf7 Kb5+-) 39...f6 40.Bd1 g6 41.Ba4 Nb3?? (41...g4 42.h4 f5+-) 42.Bb3 Kb3 43.Kd3 Ka4 44.Kd4 Kb5 45.Kd5 (45...f5 46.Ke6+-) 1–0. Holzschuh,Gerald (2125) – Jugow,Alexander (2260), Frankfurt–ch, 1999.

7.d3 e6 8.Nd2 h6 9.g4 (9.e4 Bg6=) 9...Bh7 10.h4 Nf6 (10...Qb6 11.c3=) 11.g5= hg5 (better 11...Ng8!?=) 12.hg5+- Nfd7 (12...Ng8 13.g6! fg6 14.Qg4+-) 13.g6! fg6 (13...fg6 14.Qg4 Combination; 13...Bg6 14.Rh8 Pinning (14.Rh8 Deflection)) 14.Qg4 Kf7 (14...Ke7 15.Ne2 Nf6 16.Bf6 Kf6 17.Nf3+-) 15.Nh3 Be7 16.Nf3 Nf8 17.Nhg5 Bg5? (better 17...Kg8+-) 18.Ng5+- (18.Qg5?! Qd6 19.Ne5 Ke8 20.Ng6 Qb4 21.Ke2 Rg8 22.Nf8 Rf8+-) 18...Kg8 19.Qf4 Nbd7 (19...Qe7 20.Qb8 Qg5+-) 20.Qf7 1–0. Vendelo – Lynnersi, internet, 2021.

7.Bd3 Bd3 8.cd3 e6 9.b5 cb5 10.Nf3 Nf6 11.Qb3 b4 12.Qa4 Nfd7 13.0-0 Nc6 14.Rc1 (14.Qd1!?-/+) 14...Qa5-+ 15.Qa5 Na5 16.Rc8 Ke7 17.Bb2 f6 18.Nd4 g6 19.Nc2 b3 20.Nd4 e5 21.Nb5 Kf7 22.N1c3 (22.f4 Bg7 23.Rc7 Rd8-/+) 22...Nb6 (22...Nc5 23.d4 Nd3 24.Ba3-+) 23.Rc7 Ke6 24.Ne2 Nd7 (24...d4 25.Nbd4 ed4 26.Nd4 Kd6 27.Nb5 Kd5 28.e4 Ke6 29.Nd4 Ke5 30.Nb5 Ke6 31.Nd4 Kd6 32.Nb5 Ke6=) 25.Kf1 (25.Rc8 Nc6 26.Nc7 Kf7 27.Nd5 Nc5-/+) 25...Bd6 26.Nd6 Kd6 27.Rc1 Ke6 (28.Bc3 Ra8-/+) 0–1. Sternik,Ryszard – Myrberg,Johnny, corr 3GMM½–05, 1998.

7.Nf3 e6 8.b5 c5 9.c4 Nf6 10.Be2 Nbd7 11.0-0 Qa5 12.Nc3 dc4 13.Bc4 Nb6 14.Be2 h6 15.Qb3 Be7 16.Bb2 0-0 17.d3 Qb4 18.Nd2 Rd8 19.e4 Bg6 20.Ra1 c4 21.Qb4 Bb4 22.Nc4 (22.dc4?? Rd2 23.Bc1 Rc2-+) 22...Nc4 23.dc4 Rd2 (23...Ne4?! 24.Ne4 Be4 25.Bc1=; 23...Be4?! 24.Ra4 Bc5 A) worse is 25.Ne4 Ne4 26.Kf1 Rd2-/+ (worse is 26...Bf2 27.Bf3 Nc5 28.Ra7=); B) 25.Ba3 Ba3 26.Ra3=) 24.Ra8 Kh7 25.Ba1 Bc3 26.Bc3 Re2 27.f3 Rc2 (27...Ne4!? 28.fe4 Be4 29.g3-+) 28.Bf6 gf6 29.Rc8 f5 30.e5 f4 31.c5? (better is 31.Rc7-+) 31...Bd3 32.g3 fg3 33.hg3 Bb5 34.Rc7 Kg6 35.f4 (35.Rb7 Bc6 36.Rb3 Kf5-+) 35...Bc6 36.Kf1 Rc5 37.Kf2 Rc2 38.Ke3 Rg2 39.Kd4 Rg3 0–1. Zaichuk,Vitaliy (2035) – Luzhinsky,Vitaly (2295), UKR–ch Alushta, 2009.

7.Nf3 e6 8.b5 Nf6 9.Nh4 Bg6 10.Be2 Be7 11.Ng6 hg6 12.0-0 Qd6 13.f4 g5 (better is 13...Nbd7=) 14.Be5+/– Qd8 15.fg5 Ne4 16.Bg7 Rh7 17.Be5 Bg5 18.Bd3 Nd7 19.Bd6 Ndf6 (19...Nd6 20.Bh7) 20.Be5 Nd7 21.Bd6 Ndf6 (21...Nd6 22.Bh7) 22.Bf4 Rg7 23.Be5 Rg8 24.Qf3 Qe7 25.bc6 bc6 26.Be4 Ne4 27.d3 Nd6?? (better is 27...Nc5+/–) 28.Bd6+- (28.Bd6 Be3 29.Kh1+-) 1–0. Pcmvr – Nc3, playchess.de, 2004.

7.Nf3 e6 8.Be2 Nf6 (8...Bb4 9.Bg7 Nf6 10.Bh8+-) 9.b5 Bd6 10.0-0 0-0 (10...Bg4 11.Nc3=) 11.Nh4=+ Bg6 (11...Be4!?=+) 12.f4= Nbd7 13.Ng6 (13.Bb2 Qb6=) 13...fg6 14.c4 (14.Nc3 c5=) 14...Qc7 (14...Nb6 15.d3=) 15.bc6 (15.Bd4 c5 16.Bb2 Nb6=) 15...bc6= 16.d4 Bb4 17.Nc3 c5 ½–½. Reuter,Alfred J – Eisengraeber Pabst,Axel, DESC, 2000.

7.Nf3 Nf6 =.

7.g4 Bd7 8.Bd4 e6 9.Nc3 (9.c3 b6=) 9...Qc7 (9...f6 10.Bc5=+) 10.Nf3= f6 (10...Bb4?? 11.Bg7 Nf6 12.Bh8 (< 12.Bf6 0-0+-) 12...Ng4 13.h3+-) 11.Bc5 e5 (11...Bc5 12.bc5 e5 13.h3=+) 12.Bf8 Kf8 13.Bh3 (13.h3 b5=) 13...g5 (13...h5 14.Nh4 Ne7 15.Ng2-+) 14.e4 Ne7 15.Ng1 (15.d4 Qd6 16.b5 Qa3=) 15...Na6 (15...Kg7 16.Bf1=+) 16.b5 White gets in control 16...cb5 (16...Nb4 17.bc6 Bc6 18.Qb1-+) 17.Qf3 Kg7 18.ed5 The passed pawn on d5 will quickly become a dangerous weapon 18...b4 (18...Nb4 19.Qe4 Qc4 20.f3-/+) 19.d6=+ Qd6 20.Ne4 Qe6 (20...Qc6 21.Bf1-/+) 21.Ne2 Ng6 22.N2g3 Nh4 23.Nh5= f6 draws heavy fire 23...Kg6 24.Qd3+= Kh6 25.Nhf6 Bc6 26.Qe3 Threatening mate: Qxg5 26...Be4 27.Ne4 Rg8? 28.Ng5!+- Rg5 Decoy to g5 29.f4! Qc6? 30.fg5 Kg6 31.Rf1 (31...Kg7 32.Qf2+-) 1–0. Machete (2330) – bobfishrules (2110), ICC, 2003.

7.b5 Nbd7 8.f4 Qa5 9.Bc3 Qc7 10.Nf3 e6 11.Be2 Bd6 12.0-0 0-0 13.Qc1 e5 14.Ne5 Ne5 15.Be5 Be5 16.fe5 Qe5 17.Nc3 c5 18.Na4 d4 19.Qa3 Ne4 20.Rd1 Re8 21.Bf3 h5 22.Nb6 Bg4 23.Nc4 Qd5 24.Bg4 hg4 25.Qd3 g3 26.hg3 Qh5 27.Qf1 Nf6 28.g4 Ng4 29.Qf3 Qh2 30.Kf1= Qh4 31.Ke2 Re6 32.Ra1 g6 33.Re1 de3 34.de3 Nf6 35.Nd2 Qb4 36.c4 Qc3 37.Rd1 Qc2 38.Kf1 Kg7 39.Qe2 Rd6 40.Ke1 Qc3 41.Qf3 Nd7 42.Ke2 Nb6 43.Qe4 Na4 44.Nb1 Qb2 45.Ke1 Re6 46.Qd3 Qg2 47.Qe2 Qe4 48.Kd2? Rd6 49.Kc1 Rd1 50.Qd1 Qb1!! 51.Kb1 Nc3 52.Kc2 Nd1 53.Kd1 f5 54.Ke2 Kf6 55.Kf2 Ke5 (55...Ke5 56.Ke2 Ke4-+) 0–1. Gierth,Karlheinz (2190) – Mamonov,Petr (2150), CP–2009–P–00066, 2009.

7.b5 Bg4 8.Be2 Be2 9.Ne2 e6 =.

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

7.c4 e6 8.c5 Nbd7 9.d4 Be7 10.f4 (10.Be2 b6=) 10...0-0 11.Nf3 Ne4 12.Be2 (12.Bd3 b6=) 12...b6 (12...Bh4 13.g3 Be7 14.Nc3=) 13.0-0= bc5 (13...Ndf6 14.Nc3=) 14.bc5 Qa5 15.Nbd2 Ba6 16.Ba6 Qa6 17.Ne4 de4 18.Ne5 Nf6 (18...Ne5!? 19.fe5 Bg5=+) 19.Qc2+= Rb8 20.Bc3 Nd5 21.Rb1 (better 21.Bd2+=) 21...Rb1-/+ 22.Qb1 Qa8 (22...Nc3 23.Qb8 Bf8+=) 23.Bd2+= f6 (23...f5 24.Nd7 Bd8 25.Qb8 Qb8 26.Nb8=) 24.Nc4 (24.Nd7 Kf7+=) 24...Qa4 (24...Qa6 25.Qf1=) 25.Nb6+= Qa6 26.Nd5 (26.Qe4 Qe2 27.Nd5 Qd1 28.Kf2 Qd2 29.Kf3 Qd1 30.Kg3 Qe1 31.Kh3 cd5 32.Qe6 Kf8 33.Qd5 Qe3 34.g3 Qe2=+) 26...ed5 27.Kf2 Kf7 (27...Qa8 28.Kg1=) 28.Qb6 Qb6 (28...Qa2!? 29.Ke2 Qa8=) 29.cb6+= Bd6 30.b7 Ke6 31.Ba5 Kd7 32.Bb6 Bb8 33.g4 g6 34.h4 White prepares g5 (34.h3 Kd6+/-) 34...f5 (34...c5 35.dc5 Kc6 36.Ke2=) 35.g5 (35.gf5 gf5 36.Ke2 c5 37.dc5 Kc6+=) 35...Ke6 (35...c5 36.Bc5 (worse 36.dc5 Kc6-/+) 36...Kc7 37.h5=) 36.Kg3 (better 36.Ke2+=) 36...Kf7?? (better 36...Kd6=) 37.Bd8+- Kg7 38.Bf6 Kf7 39.Be5 Ba7 40.b8Q Bb8 41.Bb8 Ke6 42.Ba7 Kd7 43.Bc5 Kc8 44.h5! Kb7 (44...gh5 45.Kh4 Decoy) 45.hg6 (45.h6 Ka6+-) 45...hg6 46.Kf2 Ka6 47.Ke2 Kb5 48.Kd2 Kc4 49.Kc2 Kb5 50.Kb3 Ka5 51.Bd6 (51.Bb4 Kb5 52.Kc3 Kb6+-) 51...Kb5 52.Bc7 c5 53.dc5 Kc5 54.Kc3 (54.Bb8 Kb5+-) 54...Kc6 55.Be5 Kc5 56.Bf6 Kb5 57.Kd4 Kc6 58.Be7 Kd7 59.Ba3 (59.Kd5 Ke7 60.Ke5 Kf7+-) 59...Ke6 60.Bb4 Kd7 (60...Kf7 61.Ke5 Ke8+-) 61.Kd5 Ke8 62.Ke5 (better 62.Ke6 Kd8 63.Kf7 Kd7+-) 62...Kf7 63.Kd6 Kg7 If Black now would get Kd7 in, he might survive 64.Ke6 Kh7 (64...Kg8 65.Kf6 Kh7 66.Bc5 Kh8 67.Kg6 Kg8 68.Bd6 Kh8 69.Kf7 Kh7 70.Bf8 Kh8 71.Bg7 Kh7 72.g6) 65.Kf6 Kg8 (65...Kh8 66.Kg6 Kg8 67.Kf6 Kh8 68.g6 Kg8 69.g7 Kh7 70.Kf7 Kh6 71.g8Q Kh5 72.Qg5) 66.Kg6+- Kh8 67.Kf5 (67.Kf7 Kh7 68.Bf8 Kh8 69.Bg7 Kh7 70.g6) 67...Kg8 (67...Kh7 68.g6 Kg8 69.Kg5 Kg7 70.f5 Kg8 71.f6 Kh8 72.f7 Kg7 73.f8Q) 68.Ke4 (68.Kg6 Kh8 69.f5 Kg8 70.f6 Kh8 71.Bc3 Kg8 72.f7 Kf8 73.Bb4) 68...Kh7 69.Kf5 Kg8 (69...Kg7 70.g6 Kh8 71.Kg5 Kg8 72.f5 Kg7 73.f6 Kh8 74.f7 Kg7 75.f8Q) 70.g6 (70.Kg6 Kh8 71.e4 Kg8 72.f5 Kh8 73.f6 Kg8 74.f7 Kh8 75.f8Q) 70…Kg7 (70...Kh8 71.Kg5 Kg7 72.f5 Kg8 73.f6 Kh8 74.f7 Kg7 75.f8Q) ½-½. carlson (2165) - amourmonstre (2460), Rated Bullet game, lichess.org, 2013.

7.c4 Bf5 8.Nf3 e6 9.Qb3 Be7 10.Be2 (10.Bf6!? Bf6 11.d4=) 10...dc4-/+ 11.Bc4 Nbd7 (11...b5 12.Bf6 gf6 13.Be2-/+) 12.0-0+= 0-0 13.Nc3 Nb6 14.Rd1 (14.Be2 Bd3+=) 14...Nc4 15.Qc4 Bd3 16.Qb3 Qd6 17.Ne1 Bf5 18.Na2 e5 19.h3 Ra8 20.Nf3?? (better is 20.Qb2-+) 20...Be6 21.Be5 (21.Qc3 Ra2 22.Qe5 Qe5 23.Be5-+) 21...Bb3 (21...Ra2?! 22.Qa2 Ba2 23.Bd6 Bd6 24.Ra1+=) 22.Bd6 Bd6 (22...Bd6 23.Re1 Ra2-+) 0–1. editor (1705) – nordlicht (2145), gameknot.com, 2006.

7.Nf3 Bg4 (8.h3 Bf3 9.Qf3 Nbd7=). ludger – jpettit (2240), net–chess.com, 2005.

7.f4 Bf5 8.Nf3 e6 9.b5 Bc5 10.Bd3 (10.Bd4 Bd4 11.Nd4 Be4=) 10...Bg4 (10...Bd3!? 11.cd3 cb5=+) 11.0-0 (11.h3 Bf3 12.Qf3 0-0=) 11...0-0 12.Qe1 Nbd7 13.Qg3 (13.Ne5 Ne5 14.Be5 Nd7=) 13...Qa8 (13...Bf3 14.Rf3 cb5 15.Bh7 Kh8 16.Bd3+/–) 14.Bc3 (14.Nc3 Bf3 15.Qf3 cb5 16.Bb5 Qa5=) 14...Bf3= 15.Rf3 Qa2 16.Rf1 Qa7 17.Qf2 (17.f5 d4 18.fe6 fe6 19.ed4 Bd4 20.Kh1 Qc5=) 17...Qb6 18.Qe2 (18.bc6 bc6 19.Qg3 d4 20.ed4 Bd4 21.Bd4 Qd4 22.Qe3 Qe3 23.de3 Ra8=) 18...Ra8=+ 19.Be5 g6 (19...d4 20.ed4 Bd4 21.Bd4 Qd4 22.Qf2 Qd6=+) 20.Kh1 (better is 20.Qe1!?=) 20...Ne5-/+ 21.fe5 Nd7 22.Qf2 Rf8 (22...Ne5 23.Be2 d4 24.Qf4=) 23.Be2 (23.Qg3 cb5 24.Be2 Be7=+) 23...Be7 (23...d4 24.Qg3 de3 25.de3-/+) 24.d4 cb5 25.Nd2 (25.Qg3 f6 26.ef6 Nf6=+) 25...Qc6 26.Bd3 f5 (26...f6 27.ef6 Bf6 28.Qe2=+) 27.g4 (27.Qe2 Nb6=+) ½–½. Woelfelschneider,Peter – Bonetti,Shane, TT–13 ETC, 2004.

7.Bd4 =.

7.e3 Qd6?? 8.Be5+– Qb4 9.Bb8 Bg4 10.Be2 Nd7 (10...b5 11.Be5+–) 11.Bg3 f6 (11...Bf3 12.Bf3 e5 13.Nc3+–) 12.0-0 (12.h3 Bf3 13.Bf3 e5+–) 12...g5 (12...e5 13.d4+–) 13.d4 (13.Nd4 Be2 14.Qe2 e5 15.Qh5 Ke7 16.Nf5 Kd8+–) 13...Qb6 14.Nbd2 h5 15.h4 Bh6 16.Qb1 Qa7 17.Qa1 Qa1 18.Ra1 Kf7 19.Kf1 Bf5 20.c4 g4 21.Ne1 e5 22.de5 fe5 23.Bd3 Be6 24.cd5 cd5 25.Bb5 Kf6 26.Nd3 Kf5 27.Bd7 Bd7 28.Be5 Re8 29.Bd4 g3 30.Rb1 b5 31.Nc5 Bc6 32.Ra1 b4 33.Ra7 Bb5 34.Ke1 gf2 35.Kf2 Kg4 36.Rb7 Rf8 37.Nf3 Bc4 38.Rh7 (38…Be3 39.Ke3 Re8 40.Be5+–; < 38.Rb4 Rf7+–) 1–0. Schieferstein,Michael – Steinberg,Walter, Bad Zwesten op 1st, 1997.

7.e3 Bf5 8.Be2 e6 9.c3 Bd6 10.0-0 Nbd7 11.Nd4 Bg6 12.Na3 e5 13.Nb3 e4 14.Nd4 Qc7 15.Qa4? (better is 15.h4!? h6 16.h5+=) 15...Bh2-+ 16.Kh1 Be5 17.Qa5 Qa5 18.ba5 Bd6 19.a6? (better is 19.Nac2-+) 19...Ba3 20.ab7 Kd8 21.Nc6 Kc7 22.b8Q Nb8 23.Nb8 Rb8 24.c4 dc4 25.Bc4 Bb2 26.Bb2 Rb2 27.Rc1 Kd6 28.Kh2 Rd2 29.Bb5 Ng4 30.Kg3 Nf2 31.Rc6 Ke5 32.Rc8 Nd3 33.Re8 Kf6 34.Rd8 Re2 35.Rd6 Ke5 36.Rd8 Re3 37.Kh2 Re2 38.Bd3 ed3 39.Kg1 Kf4 40.Rd4 Kg3 41.Rd7 Re1# 0–1. Neumann,Frank (1650) – Rosner,Dirk (2175), RSLE–2009, 2009.

7.e3 Bg4 =.

7.Bf6 ef6 8.c3 Bd6 9.e3 0-0 10.Qc2 f5 11.Bd3 g6 12.0-0 f4 13.e4 de4 14.Be4 Nd7 15.d4 Nf6 16.Nbd2 Ne4 17.Ne4 Bf5 18.Re1 Kg7 19.Qd2 Re8 20.Nd6 Re1 21.Qe1 Qd6 22.Qe5 Qe5 23.Ne5 f6 24.Nc4 b5 25.Na5 Be4 26.Nb7 Bd5 27.g3 fg3 28.fg3 Kf7 29.Nc5 h5 30.Kf2 Ke7 31.Ke3 Kd6 ½–½. nordlicht (1960) – cecherino (1875), gameknot.com, 2013.

6.b5 cb5 7.Nc3 (7.e4 b4=) 7...b4 8.Nb5 d5 (8...Nf6 9.Na7=) 9.e3 (9.Be5 Nc6 10.Bc7 Qd7=) 9...Bd7 (9...Nc6!?=+) 10.Nd6+= Ke7 11.Nb5 (11.Be5 Nc6 12.Nf3 f6=+) 11...Nf6 (11...f6 12.f4=) 12.Nh3 (12.Nf3 Ne4=) 12...Qb6 (12...Qa5 13.Nd4=+) 13.Nd4 (13.Bd4 Qa5 14.Bc5 Ke8 15.Nd6 Bd6 16.Bd6 Nc6=) 13...Nc6 (13...Ke8 14.f4=) 14.Nf4 (14.Be2 e5 15.Nc6 bc6 16.Be5 Bh3 17.gh3 c5=) 14...g6 (14...Ke8 15.Be2=) 15.Nd3 Bg7 16.Nc6 Bc6 (16...bc6 17.Bd4 Qb7 18.Bc5 Ke8 19.Bb4+=) 17.Bd4+= Qc7 (17...Qa5 18.Bc5 Ke8 19.Bb4=) 18.Qa1 (18.Qb1 Ra8+=) 18...Rg8 (18...b3 19.Qa3 Ke8 20.Qb2+=) 19.Qb2 (19.Nb4 Rc8+=) 19...b6 (19...b3 20.Qa3 Kd7 21.Qb3+=) 20.Qb4+/– Kd7?? (better is 20...Qd6+/–) 21.Ne5+- Ke8 (21...Kc8 22.Nc6 Qc6+-) 22.Nc6 Qc6 (22...Ne4 23.Bb6 Qd6 24.Qa4+-) 23.Bb5 (23...Qb5 24.Qb5 Nd7 25.Bb6+-; 23.Qb6?! Qb6 (23...Qc2?? 24.Qb8 Ke7 25.Bf6 Bf6 26.Qg8+-) 24.Bb6 Nd7+/–) 1–0. Korchut,Adam (2035) – Damasio,Fabio, IECG, 2004.

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

6.c4 Bb4?? 7.Bg7 d5 8.cd5 +-.

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

6.c4 Nf6=+ 7.c5 (7.Be5 d6 8.Bb2 e5=+) 7...Na6 (7...d6 8.Bf6 Qf6 9.d4-/+) 8.Qb3 (8.Bc3 b6=+) 8...Nd5 9.Bc3 Nc3 10.Nc3 (10.Qc3 d6 11.d4 e5=+) 10...Qh4 (10...d6!?=+) 11.e4= d6 (11...b5 12.Nf3 Qf4 13.d4=) 12.Nf3 Qg4 (12...Qf4 13.Qa4 Nc7 14.b5 dc5 15.b6=) 13.h3 (13.d4 e5 14.de5 dc5=) 13...Qg6 14.Ba6 (better is 14.d4=) 14...Qg2-/+ (14...ba6?! 15.0-0+=) 15.Rg1 Qf3 16.Be2 Qh3 17.d4 dc5 18.bc5 g6 19.Rg3 Qh1-+ 20.Bf1 Bg7 21.e5 Qh4 22.Qd1 f5 23.Rh3 Qd8 24.Bg2 Qa5 25.Kf1 Qa6 26.Kg1 0-0 27.Na4=+ Bd7 28.Nb6 Rd8 29.Qb3 Qa1-/+ 30.Bf1 Kf7 31.Qc4 h5 32.Rc3 Be8 33.Rd3 Bh6 34.Kg2 Qe1 35.Qa4 Qe4 36.Kg1 Qh4 37.Bg2 Qe7 38.Nc4=+ g5 39.Nd6= Kg6 40.Rb3 Attacking the backward pawn on b7 40...b5 41.cb6+- Rb8? 42.b7 Bf8 43.Bc6 Bc6 44.Qc6+- Qd8 45.Ra3 Bd6 46.ed6 (46...Qh8 47.Ra8 Qd4 48.Rb8 Qg4 49.Qg2 Qd1 50.Kh2 Qd6 51.Qg3 Qg3 52.fg3+-) 1–0. Petersen,Jan – Jonson,Ernst, corr Nordisk Cup, 1993.

6.c4 Nf6 7.c5 b6 8.Qb3 bc5 9.bc5 Na6 10.d4 Ne4 11.Nc3 Qa5 12.Bb2 Be7 13.f3 Nc3 14.Bc3 Qc7 15.e4 0-0 16.Bd3 e5 17.Qb6 (worse is 17.de5 Nc5 (worse is 17...Bc5 18.Ne2=) 18.Qc2 d6 19.ed6 Bd6+=) 17...ed4 18.Bd4 (worse is 18.Ba6 Qb6 19.cb6 dc3 20.Bc8 Rc8-/+) 18...Qb7 19.Ne2 Qb6 (better is 19...Nb4!? 20.Bb1 d6=) 20.cb6+/– Bb7 21.Kd2 Ra8 22.Ra1 Kf8 23.Bc4 f6 24.Nf4 Ke8 25.Ke2 Bf8 26.Nh5 Kd8 27.e5 fe5 28.Be5 Bc5 29.Bg7 Bb6 30.Rb1 Kc7 31.Be5 d6 32.Bd6! Kd6 33.Rb6 Ra7 (better is 33...Nc5!?+/–) 34.Rb7!+- Rb7 35.Ba6 Ra7 36.Bc4 Ra4 37.Kd3 Kc5 38.Bf7 Rh4 39.h3 Kb4 40.f4 c5 41.Nf6 Rh6 42.Nd5 Kb5 43.Be8 Ka5 44.Kc4 Re6 45.Bh5 Re2 (45...Re1 46.Kc5 Rc1 47.Kd6 Rf1+-) 46.Be2 1–0. Pcmvr – DanielS, playchess.de, 2005.

6.e3 Nf6 7.c3 d5 8.Nf3 Bd6 9.Be2 0-0 10.–0 Re8 11.d3 e5 12.h3 Nbd7 13.Nbd2 Nf8 14.Nb3 Bc7 15.Qc2 Qd6 16.Nbd2 e4 17.de4 de4 18.Ne4? (better is 18.Nc4 Qd5 19.Nd4-/+) 18...Ne4-+ (18...Re4?! 19.Rd1 Qe7 20.Bd3-/+) 19.Bd3 (19.Rd1 Qg6 20.h4-+) 19...Ng5! 20.Rd1 (20.Ng5 Qh2 Mate attack) 20...Nf3 21.gf3 (21.Kf1 Qh2 22.Be4-+) 21...Qh2 22.Kf1 Bh3 (22...Re3! 23.Bh7 Kh8 24.fe3 Bh3 25.Qg2 Qg2 26.Ke1 Bg3) 23.Ke2-+ Bg3 (23...Bg3 24.Kd2 Qf2 25.Kc1 Qe3 26.Kb1 Qf3-+) 0–1. Hal1958 – Patkov, playchess.de, 2005.

6.e4 Bb4?? 7.Bg7+- Nf6 8.Bh8 Ne4 9.Qg4 Nf6 (9...d5 10.f3 Kd7+-) 10.Qb4 (10.Qb4 d5 11.Bd3+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.e4 d5 7.ed5 cd5 8.Nf3 =.

6.e4 Nf6 7.e5 Nd5 8.b5 Bc5 9.Nf3 Qb6 (9...cb5 10.Nc3 Nc3 11.Bc3=) 10.d4 Bb4 11.c3 Qa5 12.cb4 Qa1 13.Bd3 (13.Qc1=) 13...0-0 (13...Qb2 14.0-0 Nb4 15.Ng5+=) 14.0-0+= Qb2? (14...cb5 15.Bh7 Kh8+–) 15.Bh7+– Kh7 16.Ng5 Kg8 17.Qd3 f5?? (better is 17...Re8 18.Qh7 Kf8+–) 18.Qh3 (18...Nf6 19.ef6 Rf6 20.Qh7 Kf8 21.Qh8 Ke7 22.Qg7 Ke8 23.Qf6 Qb4 24.Qf7 Kd8 25.b6+–) 1–0. pierre (2075) – Garfield85 (1925), internet, 2006.

6.Nf3 Nf6 =.

6.g3 d5 7.Bg2 Bb4 8.Bg7 1–0. onny555 (1905) – rcm06 (2170), gameknot.com, 2014.

6.g3 d5 7.Bg2 Nf6 8.Bc3 (8.b5 Bd6=+) 8...Bd6 9.Nf3 Nbd7 10.0-0 Qe7 11.e3 (11.b5 e5=+) 11...0-0 (11...Bb4 12.Bb4 Qb4 13.d4-/+) 12.d4 e5 (12...Ne4 13.b5-/+) 13.de5=+ Ne5 14.Ne5 Be5 15.Qd2 Bf5 16.f3 (16.Be5 Qe5 17.Nc3 Ra8=+) 16...Ra8 17.g4 Bg6 18.h4 h6 19.g5 hg5 20.hg5 Nd7 21.f4 Bc3 22.Nc3 Qb4 23.f5 (23.Rb1 Qd6-/+) 23...Bh5-+ 24.g6 (24.Qd4 Qd4 25.ed4 Ra3-+) 24...fg6 (24...Ra3 25.Nb1 Qd2 26.Nd2 Re3 27.gf7 Kf7 28.Nb3-+) 25.Rb1 Qd6 26.Rb7 (better 26.e4-+) 26...Rb8 (better 26...Nc5 27.Rb6 Ra1 28.Rb1 Rb1 29.Nb1 gf5-+) 27.Rb8-/+ Nb8 (27...Qb8?! 28.Nd5 Qd6 29.Nf6 Qf6 30.Qd7 gf5 31.Bc6=) 28.fg6 (28.e4 Qc5 29.Kh1 d4-/+) 28...Bg6-/+ 29.Ne2 Nd7 30.Nf4 (30.c4 Nf6-/+) 30...Bf7 (30...Ne5 31.Ng6 Qg6 32.Qe2-+) 31.Qd4 (31.e4 d4-/+) 31...Nf6 32.Qa4? (32.c4 c5 33.Qd2 d4 34.ed4 cd4-/+) 32...Qd7 (better 32...Qc5!? 33.Qb3 Ng4-+) 33.Qa8 Qe8 34.Qa1?? (34.Qe8 Be8 35.Ne6 Kf7 36.Ng5 Ke7-+) 34...Qe7 (better 34...Qe3 35.Kh1 Qf4-+) 35.Nd3? (35.Qd4 Ng4 36.e4 Qh4 37.ed5 Qe1 38.Bf1 Ne3-+) 35...Ne4 (better 35...Qe3!? 36.Kh1 Qe2-+) 36.Nf2 (36.Ne5 Qg5 37.Qa8 Kh7 38.Nf7 Qe3 39.Kh2 Qf4 40.Kg1 Qf7 41.Qc6 Qf2 42.Kh2 Qf4 43.Kg1 Qe3 44.Kh2 Nc3-+) 36...Qg5 (36...Nf2!? 37.Kf2 Qh4 38.Kg1-+) 37.Ne4-/+ de4 38.Qd4 Bd5 (38...Bg6 39.Kf2 Qe7 40.Ke1-/+) 39.Kf1 (better 39.c4!?=) 39...Qf6-/+ 40.Ke1 Qf7 (40...Kf7 41.c4 Qd4 42.ed4 Bc4 43.Be4-/+) 41.Bf1 (41.Be4!? g5 42.Bd3=) 41...Qe8 42.Be2 Qf8 (better 42...Qe7!?-/+) 43.c4= Qf7 (better 43...Qb4 44.Kf2 Qf8 45.Kg2 Be6 46.Qe4 Qf6=) 44.cd5+- Qd5?? (better 44...cd5 45.Bg4 Kh7+-) 45.Qd5 (better 45.Bc4+-) 45...cd5 46.Kd2 Kf7 47.Kc3 Ke6 48.Kd4 g6 49.Bd1 Kd6 (49...g5 50.Bb3+-) 50.Bb3 g5 51.Bd5 g4 52.Be4 g3 53.Bg2 Ke6 54.Ke4 Kf6 55.Kf3 Kg5 56.Kg3 Kf6 57.e4 (57.Kf4 Ke7 58.Kf5+-) 57...Ke5 58.Kf3 (better 58.Kg4 Kf6 59.Kf4+-) 58...Kf6 (58...Kd6 59.Kf4+-) 59.Ke3 (better 59.Kf4 Ke6+-) 59...Ke6 (59...Ke5 60.Bh1 Ke6+-) 60.Kd4 Kf6 61.e5 Ke7 62.Bh3 Kf7 63.Kd5 White prepares the advance e6 63...Ke7 64.e6 Kf8 65.Kd6 Ke8 (65...Kg8 66.e7 Kg7 67.e8Q Kh6 68.Qg8 Kh5 69.Bf5 Kh4 70.Qg4) 66.e7+- Kf7 67.Kd7 (67.Be6 Ke8 68.Bd7 Kf7 69.e8Q Kf6 70.Qh5 Kg7 71.Qg5 Kh7 72.Bf5 Kh8 73.Qh6 Kg8 74.Be6) 67...Kf6 (67...Kg6 68.e8Q Kg5 69.Qe4 Kf6 70.Qf5 Kg7 71.Qg5 Kh7 72.Bf5 Kh8 73.Qh6 Kg8 74.Be6) 68.e8Q Kg5 69.Qe7 (69.Qe3 Kf6 70.Qf4 Kg6 71.Bf5 Kf6 72.Be4 Kg7 73.Ke7 Kg8 74.Qf8) 69...Kf4+- 70.Qe6 Kg3 (70...Kf3 71.Bf5 Kg3 72.Qe3 Kg2 73.Bh3 Kh2 74.Qf3 Kg1 75.Qg2) 71.Bf5 (71.Qe3 Kh4 72.Bf5 Kh5 73.Qg3 Kh6 74.Qg6) 71...Kf2 (71...Kf4 72.Qe4 Kg3 73.Qe3 Kg2 74.Bh3 Kh2 75.Qf3 Kg1 76.Qg2) 72.Bg6 Kg3 (72...Kf3 73.Bh5 Kg3 74.Qg4 Kf2 75.Qf3 Kg1 76.Bg6 Kh2 77.Qf2 Kh3 78.Bf5) 73.Bf7 (73.Qe4 Kf2 74.Bh5 Kg3 75.Qg4 Kh2 76.Qf4 Kg2 77.Bg4 Kg1 78.Qf3 Kh2 79.Qf2 Kh1 80.Bf3) 73...Kh4 74.Qf6 (74.Qf5 Kg3 75.Bd5 Kh4 76.Qf4 Kh3 77.Bc4 Kg2 78.Bf1 Kg1 79.Qf3 Kh2 80.Qg2) 74...Kg3 (74...Kg4 75.Be6 Kg3 76.Qf5 Kg2 77.Qh3 Kf2 78.Bc4 Ke1 79.Qe3 Kd1 80.Bb3) 75.Be8 (75.Bh5 Kh3 76.Qf3 Kh2 77.Bg6 Kg1 78.Qg3 Kf1 79.Bd3) 75...Kg2 76.Bf7 Kh3?? (76...Kg3 77.Bh5 Kh3 78.Qf3 Kh2 79.Bg6 Kg1 80.Qg3 Kf1 81.Bd3) 77.Qg6 (77.Qg5 Kh2 78.Bd5 Kh3 79.Bf3 Kh2 80.Qg2) 77...Kh2 (77...Kh4 78.Qg1 Kh3 79.Be6 Kh4 80.Qg4) 78.Qg5 (78.Bd5 Kh3 79.Bf3 Kh4 80.Qg4) 78...Kh1 (78...Kh3 79.Bc4 Kh2 80.Bf1 Kh1 81.Qg2) 79.Qg4 (79.Bd5 Kh2 80.Qg2) 79...Kh2 80.Qg3 (80.Qf3 Kg1 81.Qg3 Kf1 82.Bc4) 80…Kh1 ½-½. Kingscrusher_YouTube (2400) - cm2200 (2395), Rated Bullet game, lichess.org, 2014.

6.c3 e5 7.e3 d6 8.Nf3 Be7 9.d4 0-0 (better is 9...e4!? 10.Nfd2 0-0+=) 10.de5+= de5 11.Be2 (better is 11.Qd8!? Rd8 12.Ne5+=) 11...e4 12.Nd4 Nbd7 13.Nc2 (13.Nd2 c5 14.Nf5 cb4+=) 13...Ne5 14.Qd8 Rd8 15.0-0 Be6 16.Rd1 b5 17.Rd8 Bd8 18.Nd4 Bd5 19.Nd2 h5 20.Bf1 Nfg4 (20...Bc7 21.Be2-/+) 21.h3 (21.Nf5!?=) 21...Nf6+= 22.g3 Nfd7 23.Bg2= c5 24.bc5 Nc5 25.Be4?? Be4 26.Ne4 Ne4 27.Bb2? Be7 28.Nb5 Bc5 29.Nc7 Nd3 30.Ba1 Nef2 31.Nd5 Ne4 32.Kg2 Ne1 33.Kf1 Nc2 34.Ke2 Na1 35.Kd3 Ng3 0–1. Fournier,Frederic – Bleda, Partie amicale, 0m + 1s, 2008.

6.c4 d5=+ 7.e3 dc4 8.Bc4 b5 9.Be2 =+.

6.c4 d5 7.e3 e6 8.Qb3 (8.c5 b6=+) 8...Bd6 (8...dc4 9.Bc4 b5 10.Be2-/+) 9.Nf3 (9.c5 Bc7=) 9...0-0 (9...dc4 10.Bc4 b5 11.Be2=+) 10.Be5 (10.c5 Bc7=) 10...Na6 (10...dc4 11.Qc4 b5 12.Qc2=+) 11.c5 Be5 12.Ne5 Nd7 13.Nd7 Bd7 14.d4 Nc7 15.Nc3 Qg5 16.g3 (16.f4 Qg6=) 16...e5 17.de5 Qe5 18.Bg2 d4 19.Nd1 Be6 20.Qb2 Nb5 21.f4 Qh5 22.0-0 Ra8 23.Bf3 Qg6 24.ed4 Ra2 25.Qc1 Nd4 26.Nc3 (better is 26.Qc3 Nf3 27.Rf3=+) 26...Qd3-+ 27.Na2 Nf3 28.Kg2? (28.Rf3 Qf3 29.Qd2 Bd5-+) 28...Qe2 (better is 28...Ba2 29.Rf3 Bd5-+) 29.Rf2-/+ Bh3! 30.Kh3 Qf2 31.Qd1 Qh2 32.Kg4 Nd2 (better is 32...f5 33.Kf5 Qh5 34.Ke4 Ng5 35.fg5 Qd1 36.Nc3-+) 33.Nc1 (33.Nc3 g6 34.f5 h5 35.Kf4 Qf2 36.Ke5 Nc4 37.Kf6 Qf5 38.Ke7 Qe5 39.Kd7 Qc3 40.Kc7-+) 33...g6 34.Kg5 Ne4 35.Kg4 Qh5 (35...Qg3) 0–1. bentengutama (1955) – steamer (2650), net–chess.com, 2003.

6.c4 d5 7.e3 Bf5 8.Nc3 e6 (8...dc4 9.Bc4 b5 10.Bb3=+) 9.b5 Bc5 (9...Bd6 10.Nf3=+) 10.Nf3 Nbd7 (10...0-0 11.Qa4=+) 11.Na4 (11.bc6 bc6 12.Qa4 Qb6=) 11...Ba7 12.Be2 0-0 (12...cb5 13.cb5 Qc7 14.Bc3=) 13.Nd4 (13.bc6 bc6 14.Nh4 Be4=) 13...Qc7 (13...Bd4 14.Bd4 cb5 15.cb5=+) 14.bc6 (14.c5 cb5 15.Nb5 Qb8+=) 14...bc6 (14...Bd4 15.Bd4 Qc6 16.cd5 Nd5 17.Nc3=+) 15.cd5 (15.Nf5!? ef5 16.Qc2+=) 15...cd5 (15...Bd4!? 16.Bd4 cd5=) 16.Nb5 (16...Qb8 17.0-0=; 16.Nf5!? ef5 17.Nc3=). algernon (2290) – lucperetti (1985), net–chess.com, 2005.

6.c4 d5=+ 7.e3 Bf5 8.Nf3 (8.c5 e6=) 8...e6 (8...dc4 9.Bc4 b5 10.Be2=+) 9.Qb3 (9.c5 Be7=) 9...Na6 (9...dc4!? 10.Bc4 b5-/+) 10.c5= b6?? (better is 10...Nb8=) 11.Ba6+- Qa8 12.Bf6 gf6 13.Be2 bc5 14.bc5 Bc5 15.d4 (15.0-0 Rg8+-) 15...Qa5 16.Nbd2 Bb4 17.0-0 0-0 (17...Rg8 18.Rd1+-) 18.Rd1 (18.Qd1 Qa2+-) 18...Kh8 (18...Ra8 19.Bd3 Bd3 20.Qd3+-) 19.Bd3 Bg4 20.Qc2 Rg8 (20...Bd2 21.Rd2 (21.Nd2?! Bd1 22.Qd1 Qc3+-) 21...Bf3 22.gf3+-) 21.Kh1 e5 22.Bh7 Rg7 23.Bd3 e4 24.Ne4 de4 25.Be4 Qh5 26.Qc6 f5 27.Bd5 Kh7 28.Rb1 Be7 29.Rb8 Bf3 30.Bf3 Qh4 31.Qc8 Kg6 32.Rb6 f6 33.g3 Qh3 The mate threat is Qf1 34.Bg2 Qg4 Threatening mate: Qd1 35.f3 Qg5 36.Rb3 Rh7 37.Qg8 Rg7 38.Qd5 Rh7 39.Kg1 Qh6 40.h4 Qf8 41.Rb5 Qc8 42.e4 Rh5 43.ef5 Rf5 44.Qf5 Qf5 45.Rf5 Kf5 46.Bh3 (46...Kg6 47.Be6+-; 46.Kf2 Bb4+-) 1–0. Annegarn,Alexander – Krug,Kevin (1645), NRW–ch U14 Winterberg, 2002.

6.c4 e6 7.Qb3 Be7 (7...d5 8.Bd4=+) 8.b5 (8.Qg3 Na6 9.Qg7 Rg8=) 8...d5 (8...0-0 9.Qg3 d6 10.e4=+) 9.e3 (9.Qg3 Nbd7 10.cd5 cd5 11.Qg7 Rg8=) 9...0-0=+ 10.Nf3 Nbd7 11.Nc3 (11.d4 Ne4=) 11...Nc5 (11...Bd6 12.Be2=+) 12.Qb2 (12.Qc2 Bd7=) 12...dc4 (12...cb5 13.cb5 Nce4 14.d3 Nc3 15.Qc3=+) 13.Bc4 (13.bc6 bc6 14.Bc4 Nd3 15.Bd3 Qd3=+) 13...Nd3=+ 14.Bd3 Qd3 15.Ne5 (15.bc6 bc6 16.Ne5 Qd6=+) 15...Qf5 16.Ne2 (16.f4 c5=) 16...cb5 (16...Ng4 17.Nf4 Ne5 18.Qe5 Qe5 19.Be5=+) 17.Ng3= Qg5 18.h4 Qh6 19.Qb5 Nd5 20.h5 (20.Qb1 Nf6=) 20...f6=+ 21.Nf3 g6 22.Ke2 Bd6 23.Ne4 Bb8 24.g4 g5= 25.Nd4 Qg7 26.f3 Qf7 27.Bb2 Qe7 28.Qb3 b6 29.Ba3+/– Ba6? 30.Kf2 Qc7 31.Bf8 Kf8 32.Ne6 (32...Ke7 33.Nc7 Bc7 34.Qd5+-) 1–0. Michalek,Martin – Kessler,Meinrad, TT–10 ETC, 2004.

6.c4 e6 7.c5 b6 8.d4 Nd5 9.Qb3 d6 10.Nf3 Be7 11.e3 0-0 12.Nc3 Ba6 13.Ba6 Na6 14.Nd5 ed5 15.0-0 b5 16.Bc3 Qd7 17.Ra1 Ra8 18.h3 Ra7 19.Qb1 Nb8 20.Ra2 h6 21.Qa1 Ra2 22.Qa2 Qb7 23.Nd2 Qa6 24.Qa6 Na6 25.e4 Nc7 26.f4 dc5 27.dc5 (worse is 27.bc5 de4 28.Ne4 Nd5+=) 27...g5 28.f5 f6 29.e5 fe5 30.Be5 Na6 31.Bc3 Kf7 32.Nb3 Bd8 33.g4 Bf6 34.Be1 Ke7 35.Kf2 Kd7 36.Ke3 Kc7 37.Nd4 Kd7 38.Nf3 Bb2 39.Nd4 Nb8 ½–½. Hal1958 – Tycho, playchess.de, 2004.

6.e3 b5 7.Bf6 ef6 8.c3 d5 9.d4 Bd6 10.Bd3 0-0 11.Nf3 Bg4 12.Nbd2 Nd7 13.Qc2 g6 14.h3 Bf3 15.gf3 (15.Nf3 Re8+=) 15...Qe7 16.h4 Ra8 17.Nb3 Nf8 (17...f5 18.h5=+) 18.h5= f5 19.Rg1 (19.hg6 fg6 20.e4 Ra3=+) 19...Kh8 20.hg6 ½–½. Myslowski – Garet,Jacques, Paris op–B, 1996.

6.e3 Qb6 7.Bf6 ef6 8.c3 d5 9.Qa4 Bf5 10.Nf3?? (better is 10.d3=) 10...Bb1-+ 11.d3 Qa6 12.Qa6 Na6 13.Nd2 (better is 13.Kd2 Ba2 14.Kc2-+) 13...Bc2 14.Be2 c5 15.b5 Nc7 16.c4 dc4 17.dc4 b6 18.0-0 Bd6 19.Ra1 Ke7 20.e4 (20.Ra2 Bf5 21.Ra7-+) 20...Rd8 21.Kf1 (21.Ra2 Bh2! 22.Kh2 Rd2 23.Bh5-+) 21...Be5 22.Ra2 Rd2 23.f3 Ne6 0–1. Bopeep – PeterRs, ChessWorld.net, 2012.

6.e3 Qb6 7.Bf6 ef6 8.c3 d5 9.Nf3 g6 10.Be2 Bg7 (10...Bd6 11.Nd4=) 11.0-0 (11.d4 0-0+=) 11...0-0 12.d4 Na6 13.Nbd2 Nc7 (13...Bf5 14.Qb3+=) 14.Qb3 Bd7 (14...Be6 15.Ra1+=) 15.c4 (15.Ra1 Ra8 16.Ra8 Na8+/–) 15...Be6 (15...Ra8 16.Rc1+=) 16.Ra1+/– dc4 (16...Na6 17.Ra4+/–) 17.Nc4 Qb5 (17...Bc4 18.Bc4 Nb5 19.Ra4+/–) 18.Ra5 Bc4 19.Bc4 (19.Rb5 Bb3 20.Rb7 Rc8-+; 19.Qc4?! Qc4 20.Bc4 Ra8+/–) 19...Qb6 20.h4 (20.Nd2 Ne8+/–) 20...Ne8 21.h5 Nd6 22.Bd3 (better is 22.hg6 hg6 23.Bd3+=) 22...Re8? (better is 22...f5!?+/–) 23.hg6+- hg6 24.Bg6 Kf8 25.Nh4 Qc7 26.Bd3 Ke7 27.Rc5 Rh8 28.g3 Qd7 29.Nf5 Nf5 30.Bf5 Qc7 31.b5 Ra8 32.bc6 Ra1 33.Kh2 bc6 34.Qc4 Qb8 35.Rc6 Qh8 36.Bh3 Qh5 37.Qb4 Kd8 38.Rc8# 1–0. marekt – kehrsam, ChessWorld.net, 2007.

6.e3 d5 7.c4 g6 (7...dc4 8.Bc4 Bf5 9.b5=+) 8.Nf3= Bg7 9.Be2 (9.cd5 cd5 10.Bb5 Bd7 11.Bf6 Bf6 12.Bd7 Qd7=+) 9...0-0 (9...dc4 10.Bc4 b5 11.Bb3=) 10.0-0 (10.cd5 cd5 11.0-0 Bg4=) 10...Nbd7 (10...dc4!? 11.Bc4 b5=+) 11.cd5+= Nd5 (11...cd5 12.Qb3=) 12.Bg7 Kg7 13.b5 c5 (13...cb5 14.Qb3 N7b6 15.Bb5+=) 14.Nc3 (14.d4 b6+=) 14...Nc3 (14...N7f6 15.Qa1+=) 15.dc3 Nf6 (15...Qc7 16.Qb3+=) 16.Qa4 (16.Qb3 Be6 17.Qc2 Bf5+=) 16...Qc7 17.Rd1 Rd8 18.Rd8 Qd8 19.h3 (19.Qf4 Bf5+=) 19...h6 (19...Bf5 20.Qc4 Qd6 21.g4=) 20.Qa8 (20.Qh4 Bf5 21.Qf4 Qd6 22.Qd6 ed6=) 20...Nd5 (20...Ne4 21.c4+=) 21.c4 Nb6 22.Qa3 Qd6 23.Qa5 Be6 24.Nd2 Nd7 25.f4 Nf6 26.Qc3 Kg8 27.Bf3 b6 28.Kf2 g5 29.fg5= hg5 30.Ke2 Qg3 Black prepares g4 31.Qd3+= g4 32.hg4 Bg4 33.Kf1 Bf3 34.gf3 Qh3 35.Ke2 Qd7 ½–½. Buczinski,Henryk – Zarychta,Krzysztof, corr Poland–chT3, 2002.

6.e3 d5 7.Nf3 Nbd7 8.b5 g6 9.bc6 bc6 10.Nd4 Bb7 11.h4 Bg7 12.h5 Nh5 13.Rh5 gh5 (better 13...Qa8 14.Bc3 e5=) 14.Nc3?? (better 14.Ne6! fe6 15.Bg7+-) 14...e5 15.Nf5 Qf6 16.Qh5 Nc5?? (16...Bf8 17.e4-+) 17.Ne2 (better 17.d4 Ne6 18.Nd6 Kf8 19.de5+=) 17...Nd7 18.Neg3 Bc8 19.Qd1 (better 19.f4 Bf8 20.c4=+) 19...Nb6?? (better 19...Bf8-+) 20.Nh5+- Qf5?? (20...Bf5 21.Nf6 Bf6 22.Be5 Be5+-) 21.Ng7 Ke7 22.Nf5 Bf5 23.Be5 f6 (23...Rg8 24.Qf3 Be6 25.Qf4+-) 24.Bd4 (better 24.Bf6 Kf6 25.Qa1 Ke6 26.Qh8 Nd7+-) 24...Nd7 25.Qa1 Rb8 26.Bd3 (26.Qc3!? Kd6+-) 26...Bd3 27.cd3 c5 (27...Rg8 28.Qc3 Rg2 29.Qc6+-) 28.Qa3 Kd6 (28...Ke6 29.Bc5 Nc5 30.Qc5+-) 29.Bc5! Nc5 30.d4 Rb1 31.Ke2 Rb5 32.dc5 Kc6 (32...Kc7 33.Qa7 Rb7 34.Qa5 Kd7 35.Qa6+-) 33.d4 (33.d4 Kb7 34.Qa4 Rb2 35.Kf3+-) 1–0. FeegLood (2670) – TheYellowKing (2300), Time forfeit, 2015.

6.e3 d5 7.h3 e5 (7...Nbd7 8.Nf3=+) 8.b5 (8.Be5 Nbd7 9.Bc3 Bd6+=) 8...Qa5 (better 8...Bd6=+) 9.Be5+- Nbd7 10.Bc3 Bb4 11.Bb4 Qb4 12.bc6 bc6 13.Nf3 0-0 14.Be2 c5 15.Nc3 Bb7 16.Qb1 Qb1 17.Nb1 Re8 18.0-0 d4 19.Na3 Bc6 20.Bb5 (20.Nc4 de3 21.de3 Ra8+-) 20...Bf3+= 21.gf3 Ne5? (better 21...Ra8 22.Ra1 Ne5+=) 22.Be8+- Nf3? (22...Ne8 23.Kg2 Nd6+-) 23.Kg2 Nh4 (23...Nd2 24.Rd1 de3 25.fe3+-) 24.Kg3 Nf5 25.Kf4 Ne7 26.Bb5 Ned5 (26...Ng6 27.Kf3+-) 27.Kf3 (27.Ke5!? Ne7+-) 27...de3 (27...Kf8 28.Bc4 Nb4 29.ed4 cd4 30.Nb5+-) 28.fe3 1–0. chatham628 (1750) – pions (1675), gameknot.com, 2018.

6.e3 d6 =.

6.e3 e6 7.b5 d5 8.Nf3 Bd6 9.c4 0-0 10.Be2 Nbd7 11.0-0 e5 12.bc6 bc6 13.Qa4 c5 14.cd5 Nd5 (14...e4 15.Ng5 Qe7 16.Nc3+=) 15.Qc6+/– N7f6 (15...N7b6 16.Be5 (16.Ne5? Qf6-+) 16...Be5 17.Ne5+/–) 16.Be5 Be5 17.Ne5 Qe7 (17...Qe8!? 18.d4 cd4 19.Qe8 Re8 20.ed4 Be6+/–) 18.Nd3+- Bf5 19.Qc5 (19.Nc5? Rc8 20.Qa6 Rc5-+) 19...Qc5 (19...Qe6 20.Rc1+-) 20.Nc5 Rc8 (20...Rb8 21.Na3+-) 21.d4 Ne4 (21...Rb8 22.Bd3 Bd3 23.Nd3+-) 22.Rc1 (22.Bd3 Nc5 23.Bf5 Ne6+-) 22...Nc5 23.dc5 Kf8 (23...Nb4 24.Nd2+-) 24.Nd2 Bg6 (24...Nb4 25.Nb3+-) 25.Nf3 f6 26.Nd4 Ke7 27.Bg4 Rc7 28.c6 h5 29.Bf3 Nb4 30.Nb5 Rc8 31.c7 Nd3 32.Rc3 Be8 33.Na7 (33...Rc7 34.Rc7 (34.Rd3?! Ra7 35.h4 g5+/–) 34...Kf8 35.Be2+-; 33.Rd3?! Bb5 34.Rc3 Kd6 35.Bh5 Rc7 36.Rc7 Kc7+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.e3 e6 7.b5 d5 8.Nf3 Be7 9.bc6 Nc6 10.c4 0-0 11.Be2 dc4 12.Bc4 Qa5 13.Bc3 Qh5 14.Be2 Ne4 (14...Rd8 15.0-0=+) 15.0-0= Nc3 (15...Qg6 16.Bb2=) 16.Nc3+= Bd6 17.Qb3 e5 (17...Qa5 18.Rc1+=) 18.Qb5 (18.Ne4 Qg6 19.Bd3 Bb4+=) 18...Qg6 19.Bd3 f5 20.Bc4 Kh8 21.Bd5 (21.d4!? ed4 22.ed4+=) 21...e4= 22.Nh4 (22.Bc6?? bc6 23.Qe2 Qh5-+) 22...Qg5 (better 22...Qh6 23.g3 g5=+) 23.Bc6?? (better 23.g3 Qf6 24.f3=) 23...Qh4-+ (23...bc6?! 24.Qc6 Qf6 25.g3=) 24.g3 bc6 (24...bc6 25.Qc6 Qe7-+) 0-1. Lance5500 (2385) - aqtobe (2510), lichess.org, 2019.

6.e3 e6 7.c4 Bb4 8.Nf3 d5 9.Be2 0-0 10.0-0 Be7 11.d4 Nbd7 12.Nc3 b6 13.cd5 ed5 14.Qb3 b5 15.Bd3 Nb6 16.Ne5 Nc4?? (better 16...Qd6-/+) 17.Nc6+- Qe8 (17...Qc7 18.Ne7 Qe7 19.Qb5+-) 18.Ne7 (18.Qb5 Be6 19.Bc4 dc4+-) 18...Qe7 19.Qd1?? (19.Qb5 Qa3 20.Bc4 dc4 21.e4+- (21.Qc4?! Ba6 22.Qc5 Qc5 23.dc5 Bf1 24.Kf1 Rb8=)) 19...Bd7= 20.Bc4 (20.Re1!?=) 20...dc4=+ 21.d5 (21.e4 Rc8=+) 21...b4-/+ 22.d6 (22.Na2 Rb8 23.Qd4 c3-/+) 22...Qe6 23.Ne2 c3 24.Nf4 Qc4 25.Qb1 (25.Qc2 Ra8 26.Rc1 Qc5-+) 25...b3 (25...Ne4 26.Qc1-+) 26.Rc1 Ne4 (26...b2!? 27.Bb2 Rb8-+) 27.f3-/+ Nd2 28.Rc3?? (better 28.Qd3 Qd3 29.Nd3-/+) 28...Qc3-+ (28...Nb1 29.Rc4 Rc8 30.Rb4+-) 29.Bc3 Nb1 30.Bb2 (30.Bd4 Na3-+) 30...Rc8 (30...Nd2 31.Nd3 Rd8 32.Bd4-+) 31.Nd5 Rc2 32.Bd4 Nd2 (better 32...b2 33.Bb2 Rb2 34.e4-+) 33.Nb6 Be6 34.d7 Bd7! 35.Nd7 b2 36.Bb2 Rb2 37.Ne5 f6 38.Kf2 (38.Nc6-+) 38…Ne4 (38...Ne4 39.Kf1 Rf2 40.Kg1 fe5 41.fe4 Re2-+) 0-1. HikaruN (2100) - amourmonstre (2410), Rated Bullet game, lichess.org, 2014.

6.e3 g6 7.Nf3 Bg7 8.Bc4 0-0 9.0-0 d5 10.Bb3 Bg4 11.d3 Nbd7 (11...Na6 12.b5 Nc5 13.bc6 bc6 14.Nbd2=+) 12.Nbd2 e5 13.h3 Bf3 14.Nf3 Qb6 (14...Qe7 15.Qe1=) 15.Ne5+= Ne5 16.Be5 Qb4 17.Qf3 Qe7 18.Bb2 Ra8 19.Ra1 Ra1 20.Ba1 Nd7 21.Bg7 Kg7 22.Qf4 Qe5 23.Qb4 b5 24.d4 Qe6 25.Qa5 Nf6 26.Qd8 Ne4 27.Qh4 Qf5 28.f3 Nd2 (28...Nc3 29.Qe7 Qe6 30.Qe6 fe6 31.Kf2=+) 29.Qe1 Nb3 30.cb3 Qc2 31.b4 h5 (31...f5 32.Kh2=) 32.Kh2 Qd3 33.h4 Kf6 34.Kg3 Kf5 35.Kf2 Qc2 36.Kg3 Qb2 (36...Ke6 37.e4=) 37.Kh3 (37.e4 Ke6 38.ed5 Kd5+=) 37...Ke6= 38.Kg3 (38.g4 hg4 39.fg4 Qc2=) 38...f6 39.Kf4?? (better 39.Kh3=) 39...Qg2-+ 40.e4 g5 41.Ke3 g4 42.ed5 (42.Qf2 Qf2 43.Kf2 gf3 44.Kf3 de4 45.Ke4 f5 46.Kf4 Kd5 47.Kf5 Kd4-+) 42...Kd5 (42...cd5?! 43.Kf4 Kd7 44.Qe3-+) 43.Qc3 (43.fg4 Qe4 44.Kd2 Qd4 45.Ke2 Qe4 46.Kf1 Qe1 47.Ke1 hg4 48.Kf2-+) 43...Qf3 44.Kd2 Qc3 45.Kc3 g3 46.Kd3 g2 47.Ke3 g1Q 48.Ke2 (48.Kd3 Qd4 49.Kc2 Kc4 50.Kc1 Kc3 51.Kb1 Qd2 52.Ka1 Qb2) 0-1. pacal56 (2190) - Boterhoofd (2315), Rated Blitz game, lichess.org, 2014.

6.Nf3 d6 7.c4 Qb6 8.Bc3 Ne4 9.Qc2? (9.e3!?=) 9...Bf5 10.e3? (10.Nd4 Nf2! 11.Qf5 Nh1 12.Qc8 Qd8 13.Qb7=) 10...e6?? (better is 10...Ng3! 11.e4 Nh1-+) 11.d3 Nc3 12.Qc3 d5 13.c5 Qa6 14.Be2 Nd7 15.0-0 Nf6 16.Re1 Be7 17.d4 Qa2 18.Nbd2 0-0 19.Ra1 Qc2 20.Qc2 Bc2 21.Bd1 (better is 21.Ra7!? Rb8 22.Ne5+/–) 21...Bd1= 22.Rd1 Ra8 23.Rb1 Nd7 24.Ne1 f6 25.Nc2 e5 26.Kf1 Kf7 27.Ke2 f5 28.Ra1 Ra1 29.Na1 ed4 30.ed4 Bf6 31.Ndb3 b6 32.Nc2 Ke6 33.f4 h6 34.g3 g5 35.Ke3 g4 36.Ne1 h5 37.Nd3 h4 38.Ne5 Ne5? (38...hg3 39.hg3 Be5 40.fe5 bc5 41.Nc5 Nc5 42.bc5 Kf7+-) 39.de5+- (39.fe5?! Bg5 40.Kd3 b5=) 39...Bd8 40.Kd4 (40.Nd4 Kd7 41.e6 Ke8 42.Nf5 bc5 43.bc5 h3+-) 40...hg3 41.hg3 b5? (41...Kf7 42.b5 cb5 43.c6+-) 42.Na5 (better is 42.Kd3+-) 42...Bh4?? (better is 42...Kd7+-) 43.gh4 g3 44.Ke3 (44.Nc6 g2 45.Kd3 g1Q 46.Nd4 Kf7 47.e6 Kf6-+) 44...d4 45.Kf3 (45.Kd4?? g2-+) 45...d3 46.Nb3 (46.Nc6 d2 47.Ke2 Kd5 48.Ne7 Ke4-+) 46...Kd5 47.Kg3 Kc4 48.Nd2 Kc3 49.Nf1 Kb4 50.h5 Kc5 51.h6 b4 52.h7 b3 53.h8Q (53...b2 54.Qb8+-) 1–0. ZeitNot2002 (1720) – MikhailTellTal (1995), Dos Hermanas internet Section, 2003.

6.Nf3 e6 7.b5 cb5 8.e3 b4 9.Bd3 d5 10.0-0 Nc6 11.Ne5 Be7 12.Bb5 Qc7 13.f4 0-0 14.Bb2 Ne4 15.Qg4 f6 16.Nf3 (not finished). LeftHook – crafty, ICC, 1996.

6.Nf3 e6 7.b5 d5 8.bc6 Nc6 9.e3 Bd6 (10.Nc3 e5=) =. p_f – MickeyBitsko, ChessWorld.net, 2002.

6.Nf3 g6 7.e3 Bg7 8.c4 0-0 9.d4 d6 10.Nbd2 Bg4 11.Bd3 Nbd7 12.0-0 e5 13.Qc2 Re8 14.h3 (14.de5!? de5 15.e4+=) 14...Bf3=+ 15.gf3 (15.Nf3? e4-+) 15...ed4 (15...d5 16.Rd1=) 16.Bd4= Ne5 17.Be2 Nh5 (17...Qe7 18.f4 Ned7 19.b5=) 18.f4+= Nd7 19.Bh5 Bd4 20.Bg6 (20.ed4 gh5 21.Qf5 Nf6+=) 20...hg6 21.ed4 Qh4 22.Qd3 Qf4 23.Nb3 Kg7 24.Kg2 Nf6 25.Na5 Re4 26.Qf3 (26.Rd1 d5 27.Nb7 dc4 28.Qg3 (28.Qc4?? Ng4 29.Qf1 Qh2 30.Kf3 Rf4 31.Ke2 Rf2 32.Qf2 Qf2 33.Kd3 Qf3 34.Kc4 Ne3 35.Kc5 Qd5 36.Kb6 Nd1-+) 28...Rd4 29.Qf4 Rf4 30.Na5-/+) 26...Qd2 27.Nb7 (better 27.Nb3!? Qb4 28.Rc1-/+) 27...Qb4-+ (27...Qd4 28.Rd1 Qc4 29.Nd6 Qb4 30.Ne4 Ne4 31.Qf4+-; 27...Rd4?! 28.Qe3-/+) 28.Nd8 Qc4 (better 28...Qb6!? 29.Nc6 Qc6-+) 29.Ra1 Qd4 30.Ra7?? (better 30.Rb1 Re5 31.Nc6 Rg5 32.Kh1-+) 30…Qa7-+ 0-1. newlife10 (2065) - Boterhoofd (2385), Rated Blitz game, lichess.org, 2015.

6.Bf6 ef6=+ 7.c3 d5 8.e3 b6 9.Be2 (9.Nf3 Bd6=) 9...Bd6 10.Nf3 0-0 11.0-0 Qd7 (11...Re8 12.Qc2=) 12.Bd3 (12.d4 Re8=) 12...Ba6 (12...Re8 13.Nd4=) 13.Qc2 Bd3 14.Qd3 Rd8 15.Na3 c5 16.bc5 bc5 17.c4 d4 (17...dc4 18.Qc3=) 18.ed4 cd4 19.Re1 Nc6 20.Nb5 (20.Nc2 Ne5 21.Ne5 fe5=) 20...Bb4 (20...Be5 21.Rb1=) 21.Qe4 (21.Kh1 Bc5=) 21...d3 22.Qf4 Rc8 23.h3 (23.Re4 f5 24.Re1 Bc5=) 23...Na5 24.Rc1 Kh8 25.Qe4 h6 26.Nbd4 Rc4 27.Rc4 Nc4 28.Qd3 Ne5 29.Qe2 Qd5 30.d3 Bc5 31.Qe4 Qa2 32.Ne5 fe5 33.Ne2 Qa5 34.Kh2 Bf2 35.Qf5 Bc5 36.Qf7= Qe1 37.Qf3 Bd6 38.Qe4 Bc7 39.h4 g6 40.Kh3 Qh1 41.Kg4 Kg7 42.Qb7+- h5 43.Kf3 Qf1 44.Ke3 Qf7 45.g3 Bd8 46.Qc6 g5 47.hg5 Qf5 48.Qb7 Kg6 49.Nc3 Qg5 50.Kf3 Qg4 51.Kg2 Bf6 52.Qc6 h4 53.Ne4 Qe2 54.Kg1 ½–½. Suwara,Kazimierz – Kleine,Joachim (1630), Telechess, 2003.

6.Bf6 ef6=+ 7.c3 d5 8.e3 Bd6 9.Nf3 =.

6.Bf6 ef6 7.c3 d5 8.e3 Nd7 9.Nf3 Bd6 10.g3 0-0 11.Bg2 Ne5 12.Ne5 fe5 (12...Be5?! 13.d4 Bd6 14.0-0=) 13.0-0 Be6 14.d3 Qd7 15.Nd2 c5 16.bc5 Bc5 17.d4 Bd6 18.Qb3 e4 19.Rb1 Rb8 20.h4 Qe7 21.Bf1 Qc7 22.Qb6 (22.c4 Bg3 23.cd5 Bh2 24.Kg2 Bf5=) 22...Qb6 (better is 22...Bg3 23.Qc7 Bc7-/+) 23.Rb6= Bc7 24.Rb1 Bd7 25.c4 Be6 26.cd5 Bd5 27.Bc4 Bc4 28.Nc4 f5 29.Rb5 g6 30.Kg2 Kf7 31.f3 Ke6 (better is 31...b6!?+=) 32.fe4+- fe4 33.g4 h6 34.Kh3 Bd8 35.Re5 Kf7 36.Nd6 Kf6 (better is 36...Kg7+-) 37.Ne4 (37.Re4?! b5 38.d5 b4+/–) 37...Kf7 38.Nd6 Kf6 39.Re8 Bc7 40.Rb8 Bb8 41.Nb7 g5 42.h5 Ke6 43.Nc5 Kd5 44.Kg2 Bd6 45.Kf3 Be7 46.Nb3 Kc4 47.Nd2 Kd5 48.Ne4 Bd8 49.Ng3 Be7 50.Ke2 Kc4 51.Nf5 Bf8 52.e4 1–0. Hal1958 – Tycho, playchess.de, 2004.

6.Bf6 gf6 7.Nf3 d5 8.c3 e5 9.e3 Bf5 10.d3 Nd7 11.Nbd2 Bd6 12.e4 Be6 13.Be2 (13.d4 Bg4 14.ed5 cd5=) 13...0-0 14.0-0 Kh8 (14...f5 15.Re1=) 15.Nh4 (15.d4 Qc7+=) 15...Rg8 16.Kh1 (16.f4 de4 17.Ne4 Bf8+=) 16...Qf8 (16...d4 17.Nc4 Nb8 18.Nd6 Qd6 19.cd4 Qd4=) 17.Bh5 (17.f4!? Qh6 18.Qe1 de4 19.Ne4+=) 17...Qh6 18.g3 Rg5 19.Bf3 Bh3 (better 19...d4 20.Nc4 Qf8 21.Nd6 Qd6=) 20.Bg2?? (20.ed5 Bf1 21.Qf1 f5 22.dc6 bc6 23.Bc6 Nb6+/-) 20...Bg2?? (better 20...Qh4! 21.Nf3 Qh6 22.Ng5 fg5 23.ed5 cd5-/+) 21.Ng2= f5 22.Nf3 Rg8 23.Nfh4 (23.ef5 Nf6+=) 23...f4 (23...fe4 24.de4 Qe6= (24...de4? 25.Nf5 Qe6 26.Nd6+-)) 24.Nf5+= Qf6 25.Qh5 Rg5 26.Qh3 Nf8 27.Ngh4 Ng6? (better 27...Rg8!?+/-) 28.Nf3 (28.Nd6 Qd6 29.Nf3 f6+-) 28...Bf8 29.Ng5 Qg5 30.Qg2 Qg4 31.f3 Qg5 32.h4 Qd8 (32...Qf6 33.Ra1 h5 34.Ra8+-) 33.h5 (33.Rg1 de4 34.de4 fg3 35.Qg3 h5+-) 33...Ne7 (33...d4 34.Rg1 dc3 35.gf4 ef4 36.d4+-) 34.Ne7 Qe7 35.gf4 ef4 (35...d4 36.c4+-) 36.Qg4 Bg7 37.Rg1 Qf8 38.d4 de4 39.fe4 h6 40.Qf5 Qe7 41.Qc8 Kh7 42.Qg4 Qf6 (42...Qf8 43.Qf4 Qc8 44.Kh2+-) 43.Qf5 (better 43.e5!? Qg5 44.Qg5 hg5 45.Rg5 Bh6+-) 43...Kh8 44.Qf6 Bf6 45.e5 Bg5 46.Kg2 Kg7 47.Kf3 Kf8 48.Ra1 Ke7 (48...f6 49.ef6 Kf7 50.Ra7 Kf6 51.Rb7+-) 49.Ra7 Ke6 50.Rb7 f6 (50...Kd5 51.Rf7 Kc4 52.Rc7+-) 51.ef6 Bf6 52.Kf4 Bg5 (52...Kd5 53.b5 cb5 54.Rb5 Kc6 55.Kf5+-) 53.Ke4 Bd2 54.c4 Kf6 55.Rb6 Kg5 56.Rc6 Bb4 57.c5 Kh5 58.d5 Kg5 59.d6 h5 (59...Kf6+-) 60.d7 Ba5 61.Ra6 (61.Rb6 Bc3 62.d8Q Kg4 63.Rg6 Kh3 64.Qd3 Kh2 65.Qe2 Kh3 66.Qh5) 61...Bd8+- 62.Ra8 (62.Ra8 Bc7 63.Kd5+-) 1-0. black_bishop_88 (2640) - ExpresoNocturno (2165), Lichess Quarantε³ne-Bundesliga2 Team Ba, lichess.org, 2020. (=1.a3 c6 2.b4 a5 3.Bb2 ab4 4.ab4)

6.g3 e6 7.Bf6 Qf6 8.c3 d5 9.Bg2 Bd6 10.Nf3 e5 11.0-0 0-0 12.d3 Qh6 13.Qd2 Qh5 14.Qg5 Qg5 15.Ng5 h6 16.Nf3 f5 17.Nbd2 e4 18.de4 fe4 19.Nd4 Nd7 20.Bh3 Ne5 21.Bc8 Rc8 22.Rb1 b6 23.b5 c5 24.Ne6 (better is 24.Nf5 Rd8 25.Ra1=) 24...g5-+ 25.f4 ef3! 26.ef3 (26.Nf3 Nf3 Double attack; 26.ef3 Kf7 Combination) 26...Kf7 27.f4 Ke6 28.fe5 Be5 29.Re1 Kd6 30.Nb1 d4 31.c4 Ra8 32.Rc1 Ra2 33.Rd1 Rc2 34.Nd2 g4 35.Kf2 Bf6 36.Ke1 (36.Kg1 Ke6 37.Re1 Kd7-+) 36...Ke5 37.Ra1 Bg5 38.Rd1 (38.Nf1-+) 38...Rd2 39.Rd2 Bd2 40.Kd2 Ke4 41.Ke2 d3 42.Kd2 Kd4 (42...Kd4 43.Kd1 Ke3 44.h3 gh3 45.Kc1 d2 46.Kb2 h2 47.Ka2 d1Q 48.Kb2 Qd3 49.g4 h1Q 50.g5 Qhb1) 0–1. Knightprancer – Goofy (2000), playchess.de, 2006.

5.Na3 d5 6.Nf3 Nf6 7.e3 e6 8.Qb3 Nbd7 9.Be2 dc4 10.Nc4 Ra1 11.Ba1 Be7 12.0-0 0-0 13.d4 Qc7 14.Rc1 Nd5 15.e4 (15.Bd3 Rd8=+) 15...Qf4 (15...Nf4 16.Bf1=+) 16.Qb1=+ N5f6 (16...N5b6 17.Nce5=+) 17.e5 (17.Bd3 Rd8=+) 17...Ng4 (17...Nd5!?=+) 18.Bc3= Qf5 (18...b5!? 19.Bd2 Qf5 20.Qf5 ef5=) 19.Bd3+= Qh5 20.h3 Nh6 21.Bh7 Kh8 22.Bd3 f5 23.Nb6 Nb6+/– 24.Qb6 g5 25.Bb4 Bd8 26.Qc5 Rg8 27.Be2 g4 28.Nh2 Qg5= 29.Rc3 gh3 30.Rg3 Qh4 (31.Nf3 h2 32.Kh1 Qe4 33.Rg8 Ng8+/–). de Visser,Arno – Diener,Rudolf, 1981.

5.Na3 e6 6.Nc2 Ra1 7.Qa1 Nf6 8.Bf6 Qf6 9.Qf6 gf6 10.Nf3 Na6 11.e4 Nc5 12.d3 d6 13.Be2 e5 14.h3 f5 15.0-0 fe4 16.de4 Be6 17.Ne3 Bh6 18.Kh2 Kd7 19.Rb1 0–1. Haesslein – Gallinnis, corr 1982.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Qb6 8.Ne5 Bc5 9.f3 =+.

5.Nc3 Nf6 6.e4 e5 7.Nf3 d6 8.d4 Bg4 9.de5 Bf3 10.Qf3 de5 11.Bc4 Bc5 12.0-0 Nbd7 13.Rfd1 Qc7 14.Ne2 Rd8 (14...b5 15.Bb3=+) 15.Ng3 0-0 (16.Nf5 b5=+) =+. de Visser,Arno – Poschmann,Hans, corr ICCF–T/19–F, 1981.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.Bc4 b5 9.Be2 =+.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.Bc4 h6 9.0-0 (9.d4 ed4 10.Nd4 b5=+) 9...0-0 (better is 9...Bc7=) 10.Nh4? (10.d4 Qb6 11.Bc1 ed4 12.Nd4=+ (12.Qd4? Qd4 13.Nd4 Be5-+)) 10...b5 (10...Bc5 11.Qf3-/+) 11.Ba2 (11.Bb3 Bc7 12.Nf3 d5 13.ed5 e4-/+) 11...Bc7 12.g3 (12.Re1 d6-/+) 12...d6 13.d4 Bh3 14.Re1 ed4 15.Qd4 Bb6 16.Qd3 Ng4 17.Nd1 (17.Re2 Ne5 18.Qc2 g5-+) 17...Re8 (17...Ne5 18.Qe2-+) 18.Ng6 Nf6 (18...Ne5 19.Ne5 de5 20.Qf3-/+) 19.Nf4-/+ Bf5 20.Nc3 Bh7 21.Rad1 (21.Qf3 Bd4 22.Nh5 Bg6 23.Nf6 Qf6 (23...gf6?! 24.Rad1 Be5 25.Re2=+) 24.Qf6 Bf6-+) 21...d5! 22.Nfd5 (22.Qd5 cd5) 22...cd5 23.Nd5 (23.Bd5 Nd5 24.Nd5 Ba5 25.Qb5 Qc8-/+ (25...Re4 26.Re4 Be4 27.Nf6 Qf6 28.Qe8 Kh7 29.Bf6+-; 25...Be4 26.Nf6 gf6 27.Rd8 Rd8 28.Re4+-; 25...Be1?! 26.Nc7 Nd7 27.Rd7-/+)) 23...Ng4 (23...Ne4 24.Kg2 Bf2 25.Re2-+) 24.Qb5? (24.Nb6 Qb6 25.Qf3 Qf2 26.Qf2 Nf2 27.Kf2+=) 24...Bf2-+ 25.Kf1 Nd7?? (25...Be1!? 26.Nf6 Nf6 27.Rd8 Rd8 28.Ke1-+) 26.Nc7 Re7 (26...Qc7 27.Rd7) 27.Na8 (27.Nd5 Re4 (27...Be1?! 28.Ne7 Qe7 29.Rd7 Nh2 30.Ke1 Qe4 31.Qe2 Qh1 32.Kf2-/+) 28.Re4 Be4 29.Ne7 Qe7 30.Rd7 Qc5 31.Qc5 Bc5 32.Rf7 A) 32...Nh2?! 33.Ke2=+; B) 32...Ba3?! B1) 33.Rg7? Kf8 34.Rg8 Ke7 35.Rg7 Kd8 36.Rg8 Kc7 37.Ra8 Nh2 (37...Ba8?! 38.Ba3 Nh2 39.Ke2=) 38.Ke2 Bf3 (38...Ba8?! 39.Ba3 Ng4 40.Be6+=) 39.Kd3 Bb2 (39...Ba8?! 40.Ba3 Kd7 41.Bc1+=) 40.Ra7 Kb6-+; B2) 33.Ra7 Kh8 34.Ra8 Ba8 35.Ba3=+; C) 32...Rf8 33.Rf4 Kh7 34.Rf8 Nh2 (< 34...Bf8 35.h3 Nh2 36.Ke2-+) 35.Ke2 Bf8-+) 27...Be1 28.Re1 Qa8 29.Bd5 Qa7 (29...Nh2?! 30.Kg2 Qa7 31.Qc6=+) 30.Qe2 Ndf6 31.Bf6 Nf6 32.Qf3 (32.Qd3 Qb8-+) 32...Nd5 (32...Qa6 33.Kf2-+) 33.ed5 Re1 (33...Qa6 34.Kf2 Qb6 35.Kf1 Qb5 36.Kf2 Qc5 37.Kf1 Qc4 38.Kf2 Qd4 39.Re3-+) 34.Ke1 Qg1 35.Ke2 Qh2 36.Ke3 (36.Ke1 Qc2 37.Qe3 Bg6-+) 36...Qg1 (36...Qb2!? 37.Qe2 Qa3 38.Kf2-+) 37.Ke2 Bc2 38.Kd2 (38.Qc3 Bd1 39.Kd2 Bg4-+) 38...Ba4 (38...Bg6 39.Kc3 Qc5 40.Kb3-+) 39.Qg4?! (39.Qd3-+) 39...Qf2 40.Kc3 Qc5 41.Kb2 (41.Qc4 Qa3 42.Kd2-+) 41...Qc2 (42.Ka1 Qc3 43.Ka2 Bb3 44.Kb1 Qc2 45.Ka1 Qc1) 0–1. de Visser,Arno – Diener,Rudolf, corr ICCF T–19–F, 1979.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.d4 ed4 9.Qd4 Qe7 -/+.

6.e3. Grund.

6.e4 d4 7.Nb1 e5 8.Bc4 Nf6 9.Nf3 Bd6 (9...Ne4 10.Ne5 Nd6 11.Bd3-+) 10.Ng5 0-0 11.d3 Qe7 12.Qb3 (12.0-0 b5 13.Bb3 h6-+) 12...b5 13.Bf7 Rf7 14.0-0 h6 15.Nf7 Qf7 16.Qf7 Kf7 17.Nd2 c5 18.Rac1 Be7 (18...Nc6 19.Rc2-+) 19.Rc2 Ra4 20.f4 Nc6 21.f5? (21.Nb3 Nd7-+) 21...Bd7 (21...Ba6!? 22.Nb1-+) 22.Rf3 (22.Rfc1-+) 22...Na5 (23.Rf1 c4-+) 0–1. Poschmann,Hans – Grund,Karl, corr, 1981.

6.e4 d4 7.Nce2 e5 8.Nf3 Bd6 9.g3 Bg4 10.Bg2 c5 11.d3 Nc6 12.h3 Be6 13.0-0 Na5 14.Nd2 c4 15.dc4 Bc4 (15...Nc4 16.Nc4 Bc4 17.Rb1-+) 16.Nc4 (16.Bc1 Nf6-/+) 16...Nc4 17.Bd4 Ne7?? 18.Bc3= 0-0 19.Bb4 Bb4=+ 20.ab4 Qb6 21.Nc3 Ra1 22.Qa1=+ Qb4 23.Rb1 Qa5 24.Qa5 Na5 25.Rb5 Nec6 26.Na4 Rb8 27.Nc5 f6 28.f4 Kf7 29.fe5 fe5 30.h4 b6 31.Nd7= Rb7 32.Nb6 ½–½. de Visser,Arno – Schuehler,Ernst, corr ICCF, 1981.

6.e4 de4 7.Ne4 Bf5 8.Qf3 Bg6 9.Bc4 e6 10.Ne2 Be4 (11.Qe4 Nf6-/+) -/+. de Visser,Arno – Grund,Karl, corr, 1981.

6.Nf3 d4 7.Ne4. Schuehler.

6.Nf3 Nf6 7.e3 Bg4 8.Be2 Nbd7 9.d4 e6 (9...Bf3 10.Bf3 e5!? 11.de5 Ne5 12.Be2 Nc4) 10.Qb3?! (10.Ne5 Bf5; 10.0-0 Bd6) 10...Bf3! 11.Bf3 Qc7 (11...Qb8!) 12.0-0 Bd6 13.g3 0-0 14.Rfc1 Qb8 (14...Qa5! 15.Qb7? (15.a4!) 15...Rfb8! 16.Qc6 Ra6) 15.a4! Rc8 16.Rc2 (16.Ba3 Bc7 17.Rab1 Ra7) 16...c5! 0–1. Poschmann – Schuehler, corr ICCF 1981.

6.Nf3 Nf6 7.e3 g6 8.Be2 Bg7 9.0-0 Nbd7 10.Qc2 0-0 11.Rfc1 e5 12.d3. Woelfelschneider – Rokitta, corr ICCF 2–2866 1993.

5.Ra3 Ra3 6.Ba3 Nf6 7.Bb2 d5 8.Nf3 e6 9.Be2 Be7 10.0-0 0-0 11.c4 b5 12.cd5 ed5 13.d4 Bf5 14.Ne5 Nfd7 15.Nc3 Ne5 16.de5 Nd7 17.f4 Nc5 18.Bf3 Qb6 19.Ba3 b4 20.Na4 Na4 21.Qa4 Qe3 22.Kh1 Qa3 23.Qa3 ba3 24.Ra1 Rb8 0–1. hurvajsmanka (1710) – BeepBeepImAJeep (2505), lichess.org, 2017.

5.Ra3 Ra3 6.Ba3 (6.Na3 d5=+) 6...Nf6 7.Nf3 g6 (7...b5 8.Bc5=+) 8.Bd3 (8.Bc4 d5 9.Be2 Bg7=+) 8...Bg7 9.c3 (9.0-0 d5=+) 9...0-0 (9...d6 10.0-0-/+) 10.h3 (10.0-0 b5-/+) 10...Re8 (10...d6 11.0-0-/+) 11.0-0 (11.Bc5 d6 12.Ba3 b5-/+) 11...d5 (11...d6 12.Bc4-/+) 12.c4 (12.Be2 b5-/+) 12...e5 (12...dc4 13.Bc4 b5 14.Qb3 bc4 15.Qb8-/+) 13.Be2 (13.Nc3 e4-+) 13...dc4-+ 14.Bc4 b5 15.Qb3 bc4 16.Qb8 Ne4 17.Qb4 Be6 18.Rd1 Qd5 (18...c5 19.Qb5-+) 19.Qb7 (19.Nc3 Nc3 20.Qc3 Bh3=) 19...c3! 20.Rc1? (20.dc3 Qd1) 20...cd2 21.Nbd2 Nd2 22.Nd2 Qd2 23.Qc6 The mate threat is Qxe8 23...Rd8 24.Be7 Rb8 25.Ra1 h6 26.Ra8 Ra8 27.Qa8 Kh7 28.Bh4 Bd5 29.Qd8 Qd3 30.Qb6 Qe4 31.f3 Qh4 32.e4 Be6 33.Qb7 Qe1 34.Kh2 h5 35.Qe7 Bh6 (36.Qh4 Qh4 37.g4 Bf4 38.Kh1 Qh3 39.Kg1 Be3) 0–1. Dolezalova,M – Nava,E (2210), OCC–2002–05, 2002.

5.Ba3 Ra5 6.d4 e6 (6...Nf6 7.Bd3=+) 7.Nf3 Nf6 8.Bd3 (8.c3 d5-/+) 8...d5 (8...Ra3 9.Na3 Qa5 10.Ke2 Ba3+/–) 9.0-0=+ Nbd7 10.Qe1 (10.c4 dc4 11.Bc4 b5=+) 10...c5 11.dc5 (11.Qc3 b6=+) 11...Nc5-/+ 12.Nd4 (12.Bb2 Ra1 13.Ba1 Be7-/+) 12...Nd3 13.cd3 Ba3 14.Na3 0-0 (14...e5 15.Nb3 Ra6 16.Qc3=+) 15.Qb4 (15.f4 Bd7=+) 15...e5 16.Nf3 Re8 17.d4 ed4 (17...e4 18.Ne5=+) 18.Nd4 Ne4 19.Nab5 (19.Rfc1 Ra8=+) 19...Ra1 (19...Ra6 20.Rfc1=+) 20.Ra1 Qb6 21.f3 Nc5 22.Rc1 Nd3 23.Qe7 Threatening mate... how? 23...Rf8 24.Rc7 Qa5 25.h3 Qa1 26.Kh2+= Nf2 27.Rc2 Qh1=+ 28.Kg3 Nh3 29.gh3+= Qh3 30.Kf2 Bf5 31.Rc3 Qh2 32.Ke1 Qg1 33.Kd2 Qf2 34.Ne2 Qf3 35.Nbd4 Qf2 36.Nf5 Qf5 37.Qb7 Re8 38.Rd3+/– Attacking the isolated pawn on d5 38...Rd8 39.Rd4 h6 40.Nf4 Rc8 41.Qb3 Qg5 42.Rd5 Qg1 43.Ne2 Qf2 44.e4 Ra8 45.Rd3 Ra1 46.Rg3 Qe1 47.Ke3 Qa5 48.Qf7?? Kf7-+ (49.Rf3 Ke6 50.Nf4 Ke7 51.Ng6 Kd8 52.Rf8 Kd7 53.Rf7 Ke6 54.Re7 Kf6 55.Re6 Ke6 56.Nf4 Kd6-+) 0–1. Benassi,Aspasio – Kagel,Fred, SES, 2001.

5.Ba3 d6 6.Nf3 =+.

5.Na3 d5 =+.

5.ab4 Ra1 6.Ba1 f6 (6...Qe7 7.Qh5 (7.Nf3 Nf6 8.Bd3 Na6 9.Be5 Nb4 10.Nc3) 7...d6 8.Nf3= Na6 9.Bc3 g6 10.Qg5; 6...d6 7.Nf3 Nf6 8.Nc3 Be7 9.Bc4 b5 10.Be2) 7.b5 (better 7.Be5!? Na6 (7...fe5 8.Qh5 Ke7 9.Qe5 Kf7 10.Qb8) 8.Ba6 ba6 9.Bc3+- d5 10.Qh5) 7...d5= 8.ed5 (8.bc6 bc6 9.Nc3 Bc5 10.Be2) 8...cd5 9.c4 (9.Nf3 Bd6 10.c4) 9...d4 (9...Nd7 10.cd5) 10.Nf3 (10.Bd3 Ne7=) 10...Qa5 11.Bb2 Bf5 (better 11...Nd7=) 12.g3?? (better 12.Nh4 Be4 13.f3=) 12...Qa2-+ 13.Nc3 (13.Qc1 Bb1 14.Nh4 Nd7-+) 13...dc3 (better 13...Qb2 14.Ne2 Ba3-+) 14.Bc3 Bc2 (14...Bc5 15.Be2-+) 15.Qc1 (15.Qa1 Qa1 16.Ba1 Nd7-+) 15...Ba3 (15...Be4 16.Be2-+) 16.Qa1 Qa1 17.Ba1 Be4 (17...Nd7 18.d4-+) 18.Be2 (18.Ke2 Nd7-+) 18...Bc5 (18...Nh6 19.d3 Bb4 20.Kf1-+) 19.0-0 (19.d3 Bf3 20.Bf3 b6-+) 19...Ne7 20.Ne5? (better 20.d3 Bg6 21.d4 ed4 22.Rd1-+) 20...fe5 21.Be5 0-0 22.d4 Nd7 0–1. Salihbegovic,Edim – Wielenga,Wiebe (2160), Harmonie Open A, Groningen NED (5), 2005.

5.Be5 A) 5...Nf6 6.Bd3 (6.ab4 Ra1 7.Ba1 Bb4 8.e5 Qa5 9.Bd4 Ne4 10.Bd3; 6.Nf3 ba3 7.Bb8 Rb8 8.e5 Ne4 9.Bd3 d5 10.ed6) 6...d5 7.ed5 Qe7 8.Qe2 Nd5 9.Nf3 Nd7 10.ab4; B) 5...d5 6.ed5 Qd5 7.Qe2 Ne7 8.c4 Qa5 9.ab4 Qb4 10.Ra8; C) 5...Qe7 6.ab4 (6.Nf3 Nf6 7.Bd3 d5 8.0-0 de4 9.Re1 ed3 10.Bf6) 6...Ra1 7.Ba1 Qe4 8.Qe2 d5= 9.b5 Nf6 10.Bf6.

5.Nf3 Nf6 6.ab4 Ra1 7.Ba1 Bb4 8.Be5 Na6 9.c3 Be7 10.Bf6.

5.Ba3 d6 -/+.

5.Na3 Nf6 6.e3 d5 7.h3 Bf5 8.g4 (8.Be2 Nbd7-/+) 8...Bg6 9.Rg1 e6 10.h4 h5 11.Ne5 (11.g5 Ng4-/+) 11...hg4 12.Ng6 fg6 13.Bd3 Kf7 (better 13...Rh6-/+) 14.Rg4? (better 14.Rh1!?-/+) 14...Ng4-+ 15.Qg4 Rh6 16.Ke2 Nd7 17.Qf4 Kg8 18.h5?? (18.Qg4 Nc5 19.Bg6 Qh4 20.Qg2-+) 18...gh5 (better 18...e5!? 19.Qg3 e4 20.Be4 de4 21.Qg2-+) 19.Rg1 Rf6 (19...Rh8 20.Qg3 h4 21.Qg4-+) 20.Qg5 (20.Bf6 Qf6 21.Qc7-+) 20...Rf2! (20...Ra3?! 21.Ba3 Rf2 22.Kf2 Qg5 23.Rg5 Ba3 24.Rh5=+) 21.Kf2 Qg5 22.Rg5 Ra3 23.Ba3 Ba3 24.Rh5 Nf6 25.Rh4 b5 26.Rh1 Kf7 27.Ra1 b4 28.Rg1 e5 29.Bg6 Ke6 30.Ke2 e4 31.d3 c5 (31...ed3!? 32.Bd3 Kf7=+) 32.de4= de4 33.Rf1 (33.Rg5 c4=) 33...c4 34.Bf5? (better 34.Rf4!?=+) 34...Ke5-+ 35.Bc8 (35.Bg6 b3 36.cb3 cb3 37.Rf5 Kd6=+) 35...b3 36.cb3 cb3 37.Rf5 Kd6 38.Rb5 b2 39.Kd1? (better 39.Rb3 Nd5 40.Kd2-+) 39...Nd5 40.Kc2 Ne3 41.Kb1 Nd5 (41...Nd5 42.Rb3 Bc5 43.Kb2 g5-+) 0–1. TwelveTeen (2540) – papasi (2495), Time forfeit, 2018.

4.ba5 Qa5 5.c3 Qa4 (5...Nf6 6.Nf3=+) 6.Qc1 (6.Qa4 Ra4 7.d4 Nf6=) 6...Qe4 (6...Nf6!?-/+) 7.d3 (7.d4=) 7...Qd5 (7...Qa4 8.Nf3=+) 8.e4 (8.Nd2 Na6 9.e4 Qd6+=) 8...Qc5 (8...Qh5 9.Nd2 Nf6 10.Ngf3+=) 9.d4 (9.Nd2 Nf6+=) 9...Qb6 (9...Qh5 10.Ne2+=) 10.Nf3 g6 11.Nbd2 Bh6 12.Be2 (12.e5+=) 12...Ba6? (12...Nf6!? 13.Qc2 d5=) 13.0-0 (better 13.e5+-) 13...b4? (better 13...Nf6 14.Qc2 0-0+=) 14.c4 White intends d5 14...b3 (14...Nf6 15.Qc2 b3 16.Nb3+-) 15.Qd1 (15.e5!? d5 16.ed6 ed6+-) 15...Bd2 16.Qd2 e6? (better 16...d5 17.ed5 cd5+-) 17.d5+- cd5 (17...f6 18.e5 f5 19.de6 de6 20.Qd6+-) 18.ed5 (better 18.Bh8 dc4 19.Rfc1 f6+-) 18...ed5 (18...f6+-) 19.Bh8 f6 (19...Bc4 20.Rac1 Qa6+-) 20.Qd5 Bb7 21.Qg8 Ke7 22.Qh7 Kd6 23.Rad1 (better 23.c5 Qc5 24.Bf6+-) 23...Kc5 24.Qe7 d6 25.Bf6 Ra3 (25...Nd7 26.Qd7 Ra3 27.Bd4 Kb4 28.Bb6 Ra2 29.Qb5 Ka3 30.Nd4 Re2 31.Qb3) 26.Bd4 (26.Qe3 Kc6 27.Rd6 Kd6 28.Qe7 Kc6 29.Ne5) 26...Kc6 (26...Kb4 27.Bb6 b2 28.Qb7 Ka4 29.Bc5 b1Q 30.Rb1 Rb3 31.Rb3 dc5 32.Ra1) 27.Bb6 (27.Ne5 de5 28.Bf3 e4 29.Be4) 27...Kb6 28.Qd6 Ka7 (28...Bc6 29.Qb8 Ka5 30.Rd5 Ka6 31.c5 Ka5 32.Rd4 Bf3 33.Qc7) 29.Qa3 (29.Qa3 Na6 30.Rd7 Ka8 31.Qf8 Ka7 32.Ra1 b2 33.Qc5 Kb8 34.Rd8 Bc8 35.Qc8 Ka7 36.Qa6) 1–0. wongsichong2002 – lucifer_666, gameknot.com, 2016.

4.d4 e5 5.de5 ab4 0–1. Zillmer,James – Zedtler,Uwe, corr or02–019, 2002.

4.e3 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.Nf3 d5 8.c3 Bf5 9.Be2 Nbd7 10.Bb2 (10.Nd4 Bb1 11.Qb1 Qc7=) 10...e6 (10...e5 11.0-0=+) 11.0-0 Bd6 12.Nd4 Qc7 13.f4 Bg6 14.Na3 Nb6 (better 14...0-0=) 15.Nab5 (better 15.Nc6 Nc4 16.Nc4 bc4 17.Nd4+=) 15...cb5-/+ 16.Bb5 Kf8 (16...Nfd7 17.Be2-/+) 17.Be2 (17.d3 Kg8=+) 17...h6 18.Nb5 Qd7 19.Nd6 Qd6 20.b5 (20.d3!?=+) 20...Kg8-/+ 21.Qb3 Kh7 22.Ba3 Qd7 23.Bc5 (23.d3 Rc8-/+) 23...Rb8 (23...Nc4 24.Rd1 Rb8 25.Bc4 dc4 26.Qc4-+) 24.Ra1 (better 24.d3!?-/+) 24...Nc4!-+ 25.b6 (25.Qc4 dc4) 25...Ne4 26.Bd4 Ned2 27.Qb4 Rb7?? (better 27...Qc8!? 28.Ra7-+) 28.Ra7?? (28.Qf8 f6 29.Ra8+=) 28...Ne4 (28...Qc8 29.Rb7 Qb7 30.Qa4-+) 29.Rb7 (29.Bc4 dc4 30.Qc4 Nd6-/+) 29...Qb7 30.Bc4 dc4 31.Qc4 Nf6 (31...Qa8 32.Qe2-/+) 32.Qc7?? (32.Bf6 gf6 33.Qc7 Be4 34.Qb7 Bb7=) 32...Be4?? (better 32...Qe4 33.Qc4 Nd5-+) 33.Qb7= Bb7 34.Kf2 (34.Bf6 gf6 35.Kf2 h5=) 34...Ne4 (34...Nd7 35.e4 Be4 36.c4-/+) 35.Ke2=+ Kg6 36.c4 Nd6 (36...f6 37.h3=+) 37.c5= Ba6 (37...Ne4 38.Kd3=) 38.Kf3 (better 38.Ke1!? Nf5 39.c6+-) 38...Bb7= 39.Ke2 Nb5 40.Kd3 Ba6 (40...Nd4 41.Kd4 (41.ed4? Bg2 42.Ke3 Kf5-+) 41...Kf6 42.g3=) 41.Ke4 (41.g4!?+=) 41...Bb7= 42.Kd3 Kf5 (42...Ba6 43.g4+-) 43.Kc4 (43.Bg7!? h5 44.g3+-) 43...Na3 (43...Nd4 44.ed4 (44.Kd4? Bg2 45.h3 g5-+) 44...Ke4 45.g3=) 44.Kb4 Nc2 45.Kb5 Nd4?? (better 45...Na3 46.Ka4 Nc2 47.Bg7 A) 47...Ne3? 48.Kb5 (48.Bh6?! Ke4=) 48...Bg2 49.c6+- (49.Bh6?! Nc2+=); B) 47...h5=) 46.ed4+- Ke4 (46...Bg2 47.c6 Kf4 48.b7 Bc6 49.Kc6+-) 47.c6 (47.c6 Bc6 48.Kc6 Kd4 49.b7+-) 1–0. BeepBeepImAJeep (2700) – erindreki (2445), lichess.org, 2015.

4.e3 d5 5.d3 Nf6 6.c4 dc4 7.dc4 Qd1 8.Kd1 ab4 9.ab4 Ra1 10.Ba1 bc4 11.Bc4 Ba6 12.Nd2 e6 13.Bc3 Nd5 14.Kc2 Nb4 15.Kb3 Nd5 16.Ne2 Bd6 17.Ne4 Be7 18.Ba6 Na6 19.g3 Nc3 20.N2c3 0-0 21.Kc4 Nc7 22.Rd1 Nd5 23.Kd3! Rb8 24.Nd5 cd5 25.Nd2 g6 26.Rb1 Rb1 27.Nb1 Bb4 28.f3 Kg7 29.Nc3 Bc3 30.Kc3 f5 31.Kd4 Kf6 32.f4 h6 33.h4 h5 34.Kc5 Ke7 35.Kc6!! Kf6 36.Kd6!! Kf7 ½–½. Trkn – oscartje, itsyourturn.com, 2000.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 =.

5.c3 Qd6 =.

5.c3 Bf5 6.e3 =.

5.c3 Nf6 6.e3 e6 7.Be2 Bd6 8.0-0 e5 9.a4 e4 10.Nd4 ab4 11.cb4 ba4 12.Ra4 Ra4 13.Qa4 Qb6 14.Bc3 0-0 15.Qa5 Qb7 16.d3 Qe7 (16...Re8 17.Nd2=+) 17.Nd2 Bc7 (17...Ng4 18.Bg4 Bg4 19.de4 de4 20.h3=) 18.Qa2 (18.Qc5 Qc5 19.bc5 Ba6 20.de4 Ne4 21.Ne4 de4+=) 18...Bg4 (18...Qd6 19.g3=) 19.de4 Be2 20.Ne2 Ne4 21.Ne4 Qe4 (21...de4 22.Qb2 Qg5 23.Rd1=) 22.Rc1 (22.Qa7 Bd6 23.Qd4 f6=) 22...Re8 23.b5 cb5 24.Bg7 Bh2 25.Kh2 Kg7 26.Ng3 Qe5 27.Rc5 Rd8 28.Rb5 Nc6 29.f4 Qe6= 30.Qb2 Kg8 31.Nh5 Qh6 32.g4 f5 33.Rb7 fg4= 34.Kg3 Rd6? 35.Kh4 d4 36.Qb3+/– Qe6 37.Qc2 Kf8 38.Qh7+/– (38...Qg6 39.Qh8 Qg8 40.Qg8 Kg8 41.ed4 Nd4 42.Kg5+/–) 1–0. Felkel,Siegfried – Zulauff,Harri, TT–18 ETC, 2005.

5.e3 ab4 6.ab4 Ra1 7.Ba1 Na6 =.

5.e3 Nd7 6.d4 =.

5.e3 e6 6.Be2 (6.a4 ab4 7.ab5 Ra1 8.Ba1 Nf6=) 6...Nd7 7.0-0 Ngf6 (7...ab4 8.ab4 Ra1 9.Ba1=+) 8.c3 e5 9.a4 ba4 (9...ab4 10.cb4 Bd6 11.ab5 Ra1 12.Ba1 cb5 13.Qb3=) 10.Ra4 (10.Qa4 e4 11.Nd4 Nb6=) 10...e4 11.Nd4 c5 12.Nc6 Qc7 13.b5 (13.Bb5 Bd6=+) 13...c4 14.Ba3 Nc5 15.Bc5 Bc5 16.f3 (16.Nd4 Bd7-/+) 16...Bd6 (16...Bd7 17.fe4 Ne4 18.Bf3 Bc6 19.bc6 Qc6 20.Qc2-/+) 17.f4 Bd7 18.Nd4 0-0 19.Qc2 (19.Na3 Rfb8-/+) 19...Bc5 20.Na3 Ne8 21.Qa2 Nd6 22.Rb1 Nc8-+ 23.Qb2 Nb6 24.Bd1 Bd6 25.Nc6 Bc6 26.bc6 Na4 27.Ba4 Rab8 28.Nb5 Qc6 29.Qa2 Rb6 30.Kf2 Bc5 31.Nd4 Qh6 32.Rb6 Bb6 33.h3 Bd4 34.cd4 Qb6 35.Bd7 Rd8 36.Qa4 Qb4 (37.Ke1 c3 38.Qb4 ab4 39.dc3 Rd7 40.cb4 Rb7-+) 0–1. Naunhofer – nordlicht, mySchach.de, 2004.

4.b5 Nf6 5.e3 Bg4 6.Nf3 Nbd7 7.h3 Bh5 8.g4 Bg6 9.bc6 bc6 10.Nd4 (10.g5 Ne4=+) 10...Qc7 (10...e5 11.Nf5-/+) 11.f4 (11.Nc3 e5 12.Nf5 h5=+) 11...e5-/+ 12.fe5? (12.f5 ed4 13.fg6 Qg3 14.Ke2-+) 12...Qe5-+ (12...Ne5?! 13.Nc3-/+) 13.Qf3?? (13.d3 c5 14.Nb5 Qb2-+) 13...c5 (13...Be4 14.Qf2 Bh1 15.Qg1-+) 14.Nb5 (14.Bd3-+) 14...Qb2 15.Nc7 Kd8 16.Na8 Qa1 17.Kf2 (17.Qd1 Qe5 18.Rg1-+) 17...Qb1 18.Qg3 (18.d3 Qc2 19.Qe2 Bd3 20.Qc2 Ne4 21.Ke1 Bc2-+) 18...Qb7 (18...Ne4 19.Kg2 Ng3 20.Rg1 Qe1 21.Bd3 Qd2 22.Kg3 Bd6 23.Kf3 Re8 24.Be2 Re3 25.Kg2 Re2 26.Kf3 Be4) 19.Ba6 Qa8 (better 19...Ne4 20.Kg1 Qa8 21.Qh4 Be7-+) 20.Bb5 Qb7 (better 20...Ne4 21.Kf3 Ng3 22.Kg3 Qb8 23.Kf2 Qb5 24.Rd1-+) 21.Bd7 Qd7 (better 21...Ne4 22.Kg2 Ng3 23.Kg3 Qd7 24.Kf2-+) 22.Rb1 (22.Qb8 Qc8 23.Qa7 Qc7 24.Qc7 Kc7-+) 22...Bd6 (better 22...Ne4 23.Kg2 Ng3 24.Rb8 Ke7 25.Ra8-+) 23.Rb7 Ne4 (23...Bg3 24.Kg2 Be4 25.Kg3 Qd6 26.Kf2 Qh2 27.Ke1 Bf3 28.Rb8 Kc7 29.Rc8 Rc8 30.Kf1 Qe2 31.Kg1 Qg2) 24.Kg2 Bg3 (better 24...Qb7!? 25.Qh4 f6 26.Qe1-+) 25.Rd7 Kd7 0-1. StrongStomach (2545) - universe64 (2370), lichess.org, 2019. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

4.b5 Bg4 =.

4.d3 ab4 5.ab4 Ra1 6.Ba1 =+.

4.d3 Qb6 5.Qd2 (5.c4 ab4 6.c5 Qb5=+ (6...Qc5? 7.ab4 Qb4 8.Bc3+-)) 5...e6 (5...ab4 6.Qb4 Qb4 7.ab4 Ra1 8.Ba1=+) 6.c3 d4 (6...Nf6 7.Nf3=+) 7.ba5= dc3 (better is 7...Ra5!? 8.cd4 e5=+) 8.ab6+/– cd2 9.Nd2 Nd7 10.Nc4 Ra6 11.a4 (11.e4 Nh6+=) 11...Nb6 12.Nd6 Bd6 13.Bg7 f6 (13...Bb4 14.Kd1+/–) 14.Bh8 Na4 15.f3 (15.Kd2 Bb4 16.Kc2 e5+/–) 15...Kf7 (15...Bb4 16.Kf2+/–) 16.e4 (better is 16.d4!?+/–) 16...Ne7+= 17.d4 Bb4 (17...Ra5 18.Bc4+/–) 18.Kf2 Bc3 19.Ra2 Bd4 20.Kg3 Ra5 21.Ne2 Rg5 (21...Bb2 22.Nf4=) 22.Kh3 Rh5 (22...e5!? 23.g4 b5 24.Nd4 ed4 25.Bc4 Be6 26.Be6 Ke6-/+) 23.Kg4= Rg5 24.Kh3 Bf2?? (24...e5!? 25.g4 b5 26.Nd4 ed4 27.Bc4 Be6 28.Be6 Ke6-/+) 25.g3 Nb6 26.f4 Rg8 27.Bf6 Kf6 28.e5 Kf7 29.Nc3 Bd4-+ 30.Ne4 Nbd5 31.Bc4 b5 32.Bb3 c5 33.Nd6=+ Kg7 34.Nb5 Bb7 35.Ra7+= Rb8 36.Rd1 Nc6=+ 37.Ra4 Ne3 38.Rd3 (38.Rd2 Bc8 39.Nd4 cd4=+). Bui Dac Khuong – Nguyen Viet Chung, VIE–ch U15 Vung Tau, 2004.

4.e3 b5 5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 Nd7 8.e4 e6 9.0-0 Qc7 10.Qe2 Ne7 11.Re1 Nb6 12.Bh5 (better is 12.Bd4+=) 12...Rg8?? (12...Na4 13.Bc3 Nc3 14.Nc3=) 13.Qf3?? (better is 13.ed5 g6 14.de6+-) 13...g6= 14.Bg4 a4 (14...Nc4 15.Bc3+=) 15.Nc3 (15.ed5 Ned5 16.Qh3 Bg7=) 15...Nc4 16.Bc1 Bg7 17.ed5 ed5 (17...Nd5? 18.Nd5 cd5 19.Be6 fe6 20.Re6 Kd7 21.Qf7 Kc8 22.Rc6 (22.Qg8?! Kb7 23.Qh7 Rh8 24.Qg6 Ba1=) 22...Qc6 23.Qg8 Kb7 24.Qg7 Qc7 25.Qc7 Kc7 26.d3+-) 18.Rb1 (better is 18.Qh3=) 18...f5?? (18...h5 19.Bh3+=) 19.Bh3?? (19.Nd5 cd5 20.Qd5+/–) 19...0-0-0 20.Ne2 Be5 21.g3 Rge8 22.d3 Nd6 23.Nf4 Ng8 24.g4 g5 25.Ne2 f4 26.Bb2 Nf7 27.Nd4 Nd6 28.Ne6 Re6+= 29.Be5 Qe7 30.Bc3= Re8 31.Re6 Qe6 32.Re1 Qd7 33.Bg2 Re1 34.Be1 Qe6 35.Qd1 Qe5 36.Bd2 Nf6 37.h3 Kd7 38.Bf3 Nfe8 39.Be2 d4 40.Bf3 Nc7 41.Qb1 Nd5 42.Qa1 Nc3 43.Bc3 dc3 44.Kf1 Ne8 45.Qd1 Nc7 46.d4 Qe6 47.Qd3 Nd5?? 48.Qh7+- Kd6 49.Bd5 Kd5 50.Qd3 Qe4+/– 51.Qc3 Qd4 52.Qd4 Kd4 53.Ke2 Kc3?? 54.Kd1 Kb2-+ 55.f3?? Ka3 56.Kc1 Kb4 57.Kb2 a3 58.Kb1 Kc3 59.Ka2 b4 60.h4 gh4 61.g5 h3 62.g6 h2 63.g7 h1Q 64.g8Q-+ b3 65.Ka3?? Qa1# 0–1. Pies,Gerhard – Seelig,Jochen, Leverkusen–ch op, 2005.

4.e3 Qb6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Qb6 4.a3 a5).

4.e3 Qd6 5.b5 =.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.Bf6 ef6 8.g3 (better 8.b5=) 8...Bb4-/+ 9.Bg2 0-0 10.0-0 Bf5 11.e3 Nd7 12.c3 (12.Nd4 Be6-/+) 12...Bd6 13.d4 Be4 14.Qb3 b5 15.Nbd2 f5 16.Ne4 fe4 17.Nd2 f5 18.Ra1 Qc7 19.Ra6 Nb6 20.Qa2 Nc4 (20...Rb8 21.f3 ef3 22.Bf3-/+) 21.Nc4 bc4 (worse 21...dc4 22.f3=) 22.Qa4 Rc8 23.Bh3 g6 24.g4 (24.Bg2 c5-/+) 24...Bh2 25.Kg2 Bd6 (better 25...f4!? 26.Kh2 fe3 27.Kg2 ef2-+) 26.gf5-/+ gf5 27.Bf5 Qg7 (27...Rf8!? 28.Qc6 Rf5 29.Qd6 Qd6 30.Rd6 Kf7=+) 28.Kf1= Rf8 29.Qc6 Rf5 30.Qd6 Qf7?? (30...Qg5 31.Ra5 Qh5 32.Ra8 Kg7 33.Ra7 Rf7 34.Qg3 Kf8 35.Ra8 Ke7 36.Qc7 Kf6 37.Qd8 Kg6 38.Qg8 Kf6 39.Qh8 Ke6 40.Qe8 Kf6 41.Ke1+=) 31.Ra8?? (better 31.Qg3 Qg7 32.Ra8 Rf8 33.Qd6 Ra8 34.Qd5 Qf7 35.Qa8 Kg7 36.Qe4+-) 31...Kg7+= 32.Qg3 Qg6 33.Ra7 Kh6 34.Qh4 Rh5?? (better 34...Qh5 35.Ra6 Kg7 36.Qg3 Qg5 37.Ra7 Kh6+=) 35.Qf4+- Rg5 36.Rf7 Kh5 (36...Qh5 37.Qd6 Qg6+-) 37.Qh2 Kg4 38.Qg3 (38.Rf4) 38...Kh5 39.Qh3 1-0. black_bishop_88 (2510) - temcolz (2395), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

4.Nf3 Bf5 5.e3 e6 6.c4 Nf6 7.c5 b6 8.Be2 bc5 (8...ab4 9.cb6 Qb6 10.ab4 Ra1 11.Ba1 Bb4 12.Nh4 Bb1 13.Bf6 gf6 14.Qb1-/+) 9.bc5=+ Bc5 10.Qc1 0-0?? (better is 10...Nbd7-/+) 11.Qc5+- Nfd7 (11...Nbd7 12.Qc6 Rc8 13.Qa6+-) 1–0. kiloracer (2100) – vampirex (2190), net–chess.com, 2005.

4.Nf3 Nf6 5.e3 ab4 6.ab4 Ra1 7.Ba1 b5 8.Ne5 (8.Be5 Bg4=) 8...Nfd7 9.f4 Ne5 10.fe5 (10.Be5!? Nd7 11.Bc3=+) 10...Bf5-/+ 11.Bd3 Bd3 12.cd3 e6 13.0-0 Be7 (13...Bb4!? 14.Bc3 Be7-/+) 14.Qg4=+ 0-0 15.Nc3 Nd7 16.Ne2 Qc7 17.Nf4 (17.Qf4!?=+) 17...Ne5-/+ (17...Bb4?! 18.Nh5 g6 19.Qb4 gh5 20.Qh4+=) 18.Qg3 Bd6 (18...Bb4?? 19.Nd5 cd5 20.Be5 Qe5 21.Qe5 Bd2 22.Rd1+-) 19.Nh5 (19.Qh4 Ra8-+) 19...Ng6-+ 20.Qg4 (better 20.Qh3 e5 21.Bc3-+) 20...Bh2 21.Kh1 Be5 22.Be5 Qe5 23.Rc1 (23.d4 Qd6-+) 23...Qd6 (23...Qb2 24.Rc6 Qd2 25.Rc5-+) 24.Qd4 (24.Rc5 Ra8 25.Qg3 Qg3 26.Ng3 Ne7-+) 24...e5 25.Qb6 (25.Qg4-+) 25...Qb4 26.d4 Qd2 27.Rc6 (27.Qc6 Qe3 28.de5-+) 27…Qd1 (27...Qd1 28.Kh2 Qh5 29.Kg1 Qd1 30.Kh2 Ra8 31.Rg6 hg6-+; 27...Nh4 28.Nf6 gf6 29.Rc2 Qc2 30.de5 Qg2) 0–1. FeegLood (2400) – kekss5 (2195), lichess.org, 2015.

5.e3 Nd7 6.Nf3 Ngf6 7.Be2 e6 8.0-0 Bd6 9.d3 0-0 10.e4 Qc7 11.Nbd2 Re8 12.Re1 (12.c4 b6+=) 12...b6 (12...e5 13.c4 d4 14.Nb3-/+) 13.Bf1 e5 14.g3 Bb7 15.d4 (15.Bg2 Nc5-/+) 15...Ne4 (better is 15...ed4!? 16.Nd4 Ne4-/+) 16.Ne4+= de4 17.Re4 c5 18.Rh4?? (18.de5 Qc6 19.e6 (worse is 19.ed6 Qe4 20.Bg2 Qd5+=; worse is 19.Qd6 Qe4 20.Bg2 Qc2 21.Qd7 Qb2-+) 19...fe6 20.Re3+=) 18...ed4 (18...cd4 19.Bb5-+) 19.Bb5 Bc6 20.Qd3 Nf6 21.Ng5 h6 22.Bc6 Qc6 (22...hg5?! 23.Ba8 gh4 24.Qf3-+) 23.Nh3? (23.Nf3 Ra5-+) 23...Ra7 (23...Nd7 24.f4-+) 24.Nf4 (24.Rf1 Nd7 25.f4 Nf6-+) 24...Rae7 25.Ng2 Re2 (better is 25...Nd7 26.Qa6-+) 26.Qf5 (26.Rf1-+) 26...R8e5 (better is 26...Ne4!? 27.Qf3 Rf2 28.Qe4 Re4 29.Kf2 Re2 30.Ke2 Qg2 31.Kd3 c4 32.Kd4 Qc2 33.Kd5 Qb2 34.Kd6 Qa1 35.Rc4 Qa3 36.Kc6-+) 27.Qd3 Qd5 (better is 27...Nh7!? 28.Rh5 Ng5 29.Rg5 hg5 30.Rf1-+) 28.Rf1 (28.Bd4 cd4 29.Rd4 Qc5-+) 28...R5e4 (28...Qa2 29.Ne3 Qb2 30.Qe2 de3 31.fe3 Qa3 32.e4-+) 29.f3 (29.Re4 Qe4 30.Qe4 Ne4-+ (worse is 30...Re4 31.Re1-+)) 29...Re8 30.Rf2 Rf2 31.Kf2 Qe6 32.Bc1 c4 33.Qd1 Bc5 34.Kf1 b5 35.Nf4 Qd6 36.Ng2 Ba3 37.Rd4-/+ Qe7 38.Ba3 Qa3 39.Rd8 Rd8 40.Qd8 Kh7 41.Qd1 Qc3 42.Qe2 b4 43.Ne3 b3 44.cb3 cb3 45.Nd1 Qc2 46.Nb2 g6?? 47.Ke1?? Qc3-+ 48.Kf2 Nd5 49.Nd1 Qd4 50.Ke1 Nc3 51.Nc3 Qc3 52.Kd1 Qa1 53.Kd2 Qa2 54.Kd1 Qe2 (54...Qe2 55.Ke2 b2-+) 0–1. Thielscher,Rene (1645) – Knops,Peter (2060), Pinneberg–ch, 2007. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.e3 Bf5 6.c4 e6 7.Nf3 h6 8.Qb3 (8.cd5 ed5 9.Be2=) 8...Qa7 (8...Nd7 A) 9.Qb7? Rb8 10.Qc6 Ne7-+ (10...Rb2?! 11.Ne5 Qd8 12.cd5 ed5 13.Bb5=+); B) 9.Bc3 Qb6 10.Qb6 Nb6 11.cd5 Nd5 12.Bb2=) 9.Be2 (9.cd5!? ed5 10.Bd4+=) 9...Nd7 10.d4 Ngf6 11.0-0 Bd6 12.Nc3 (12.c5 Bc7=) 12...0-0 13.Rfc1 (13.c5 Bc7=) 13...Rfb8 14.Nd1 (14.cd5 ed5 15.a4 Qb6 16.Qb6 Nb6=) 14...Ne4 15.cd5 ed5 16.Bd3 Re8 17.Qc2 Qb8 18.Nc3 Bg4 (18...Bg6 19.h3=+) 19.Ne4 de4 20.Be4 Bf3 21.Bf3 Bh2 22.Kf1 Qd6 (22...Bd6!?=) 23.g3 Bg3 24.fg3 Qg3 (24...Re3 25.Qf2 Ree8 26.Re1+/-) 25.Qf2 Qg5 26.Re1 (26.e4 Nf6 27.e5 Ng4+/-) 26...Nf6 27.Bc1 (27.e4!?+/-) 27...Ne4+= 28.Qg2 Qf5 29.Kg1 Rad8 30.Be4 (30.Rf1 Rd6 31.Bd1 Qd5+/-) 30...Re4+= 31.Bd2?? (better 31.Rf1 Qe6 32.Rf3+=) 31...Rg4-+ 32.Re2 Rd6 33.Rf1 Rg2 34.Rg2 Qd3 35.Rff2 (35.Bc1 b6-+) 35...Rg6 (better 35...Qa3 36.Kh2-+) 36.e4 (36.Bc1-+) 36...Rg2 37.Kg2 Qd4 (better 37...Qe4 38.Rf3 g5-+) 38.Rf3 (38.Kf3 Qf6 39.Ke3 Qa1-+) 38...Qe5 (better 38...Qd2 39.Kh3-+) 39.Bf4 (39.Re3 f5-+) 39...Qe4 40.Bh6 (40.Kf2-+) 40...g5! 41.Bg5 Qg4 42.Rg3 Qe2 43.Kh3. ClayPigeons (2200) - adetoth (2245), Rated Bullet game, lichess.org, 2021.

5.e3 Nf6 6.Nf3 Bf5 7.Be2 e6 8.0-0 Nbd7 9.c4 (9.Nd4 Bg6=) 9...Bd6 10.d4 Ne4 (10...dc4 11.Bc4 0-0 12.Bd3=+) 11.Nbd2 0-0 12.Qc1 (12.Ne4 Be4 13.c5 Bc7=) 12...h6 (12...Nd2 13.Qd2 dc4 14.Bc4=+) 13.Rd1 Rac8 (13...Nd2 14.Nd2 Bb8 15.c5=) 14.Ne4 de4 15.Nd2 Qc7 (15...c5 16.d5 ed5 17.cd5=) 16.Nf1 (16.c5 Bh2 17.Kh1 Qb8+=) 16...Nf6 (16...c5 17.Qc3=) 17.Qc3 (17.c5 Be7+=) 17...Ra8 (17...c5 18.dc5 Bc5 19.Qe5=) 18.a4 (18.c5 Be7+=) 18...Qa5 (18...Bg4 19.Qc2 Be2 20.Qe2=) 19.Qb3 Ra7 20.Bc3 Qc7 21.Bb4 (21.c5 Be7+=) 21...Bb4 22.Qb4 Rfa8 23.c5 Bg4 (23...Nd5 24.Qb3=) 24.Rd2 (better 24.Bg4 Ng4 25.Qb1+=) 24...Bf3?? (better 24...Be2 25.Re2 Nd5=) 25.gf3+- ef3 26.Bf3 Nd5 27.Bd5 ed5 28.Rb2 f5 29.Qb6 Qf7 30.a5 f4 31.a6! Ra6 (31...Ra6 32.Qb7 Double attack (32.Qb7 Deflection; 32.Qb7 Decoy); 31...ba6 32.Qc6 Deflection) 32.Ra6 Ra6 33.Qb7 Qg6 34.Kh1?? (34.Ng3 Ra1 35.Kg2 fg3 36.hg3 Kh7+=) 34...f3 (34...Ra1 35.Qc8 Kh7 36.Qh3-/+) 35.Qc8 (better 35.Qb8 Kh7 36.Qg3+=) 35...Kh7-+ 36.Qh3 Ra1 37.Rb8?? (better 37.Rb7 Qh5! 38.Rg7 (38.Qh5?? Rf1) 38...Kg7 39.Qd7 (39.Qh5 Rf1) 39...Qf7 40.Qf7 Kf7 41.Kg1-+) 37...Qd3 (better 37...Qh5! 38.Qg2 fg2 39.Kg2 Qd1-+) 38.Kg1= Qg6 39.Qg3?? (39.Kh1 Qh5!? 40.Qg2 fg2 41.Kg2 Qd1-+) 39...Qd3 (39...Rf1 40.Kf1 Qd3 41.Kg1 Qd1) 40.Qh3= Qg6 41.Kh1?? (41.Qg3 Rf1 42.Kf1 Qd3 43.Kg1 Qd1) 41...Qd3 (better 41...Qh5 42.Qg2 fg2 43.Kg2 Qd1-+) 42.Rh8?? (better 42.Kg1 Qg6=) 42...Kh8 43.Kg1 (43.Qc8 Kh7 44.Qh8 Kh8 45.h4 Qf1 46.Kh2 Qg2) 43...Qf1 (43...Qg6 44.Kh1 Qf5 45.Qg2 fg2 46.Kg2 Qe4 47.Kh3 Rf1 48.f4 Qe3 49.Kg4 Rf4 50.Kh5 Qe8) 44.Qf1+= Rf1 45.Kf1 (45.Kf1 Kg8 46.h4+-) 1-0. HeliBoy (2420) - universe64 (2385), lichess.org, 2019. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

5.Nf3 Bf5 6.e3 Nf6 7.Bd3 e6 (better 7...Bd3 8.cd3 Nbd7=+) 8.Bf5+/- ef5 9.Bf6 gf6 10.0-0 Nd7 11.g3 (11.Nd4 f4+/-) 11...h5 (11...Qa4 12.Nc3 Qg4 13.Nd4+=) 12.h4 (12.Nh4 f4+/-) 12...Bd6 13.c3 Qc7 14.Kg2 Rg8 15.Qe1 Ne5 16.d4 (16.Nd4 Qd7+=) 16...Nd3 (16...Nf3 17.Kf3 Qe7 18.Nd2=) 17.Qe2 (better 17.Qd2 Nf2 18.Kf2 (worse 18.Rf2 Bg3 19.Kf1 Bf2 20.Qf2 f4=+) 18...Bg3 19.Ke2 Bh4 20.Qd3+/-) 17...Bg3? (better 17...Nf2 18.Kf2 Bg3 19.Kg2 Qe7=) 18.Qd3+- (18.fg3?! Qg3 19.Kh1 f4+/-) 18...Bh4 19.Kh1 f4?? (19...Bg5 20.Qf5 Qd6 21.Qh3+-) 20.Nbd2 (better 20.Nh4 fe3 21.Qe3 Kd7 22.Qf3+-) 20...Qd7 21.Kh2 Qg4 (better 21...Rg4+-) 22.Rg1 Bg3 23.fg3 fg3 24.Kg2 h4 (24...b5 25.Rh1+-) 25.Rh1 0-0-0 (25...f5 26.Rh4 Qg6 27.Rf4+-) 26.Rh4 Qg7 (26...Qd7 27.c4+-) 27.Qf5 Kb8 28.Rh7 Qf8 (28...Qg6 29.Qg6 Rg6 30.Rah1+-) 29.Qf4 (29.Qf6 Rd7+-) 29...Ka8 (29...Rd6 30.c4 Ka7 31.Rb1+-) 30.a4 (30.Qf6!? Rd7+-) 30...Re8 31.a5 Qe7 32.a6 b5 (32...b6 33.Nf1+-) 33.a7 (better 33.Nf1!? Rg6+-) 33...Qe3 34.Qe3 (34.Qf6!? Qe2 35.Kh3 Qe6 36.Qe6 Re6 37.Rf7 g2+-) 34...Re3 35.Rf7 Re2 (35...Rc3 36.Ra2+-) 36.Kg1 g2 37.Re1 (37.Nb3 Rh8 38.Nh4 Rhe8+-) 37...Re1 38.Ne1 Re8 39.Ng2 Re2 40.Nb3 Rb2 (40...Ra2 41.Rf6 Ra3 42.Nc5 Rc3 43.Rc6 Ka7 44.Nf4 Rg3 45.Kf2+-) 41.Nc5 (better 41.Na5 Rb1 42.Kh2 Rb2+-) 41...Rb1 42.Kf2 f5 (42...Rb2 43.Kf3 Rc2 44.Rf6 Rc3 45.Ne3 Ka7 46.Rc6+-) 43.Nf4 Rf1 (43...Rb2 44.Kf3 Rb1 45.Nfe6 Re1 46.Nc7 Ka7 47.Nd5 Kb8 48.Nb6 Rf1 49.Ke2 Re1 50.Ke1 b4 51.Rb7) 44.Kf1 b4 45.Rf8 (45.Na4 bc3 46.Nb6) 45...Ka7 46.cb4 (46.Rf7 Kb8 47.Na6 Ka8 48.Nb4 Kb8 49.Nc6 Kc8 50.Nd5 f4 51.Rc7) 46...Kb6+- 47.Rf5 (47.Rb8 Kc7 48.Na6 Kd6 49.Rb7 c5 50.Nc5 Kc6 51.b5 Kd6 52.Rd7) 1-0. black_bishop_88 (2560) - SD63 (2520), lichess.org, 2020. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

5.Nf3 Nf6 6.e3 Bg4 7.Be2 Nbd7 8.0-0 e6 9.Nc3 Bd6 10.Rb1 (better 10.Nd4 Be2 11.Qe2=+) 10...d4 (better 10...b5-/+) 11.Nd4+/- Qh5 12.h3 c5?? (better 12...Be2 13.Qe2 Qe2 14.Nce2 Ke7+=) 13.Bg4+- Ng4 14.Ndb5 (14.Qg4?! Qg4 15.hg4 cd4 16.ed4 h5+-) 14...Qe5 (14...Bh2 15.Kh1 Ndf6+-) 15.Nd6 (better 15.f4 Ne3 16.fe5 Nd1 17.Nd6 Kd8 18.Nf7 Kc7 19.Rfd1 Rhe8+-) 15...Qd6 16.Qg4 (worse 16.hg4 0-0+-) 1-0. black_bishop_88 (2565) - chakin (2640), lichess.org, 2020. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

5.Nf3 Nf6 6.e3 Bg4 7.Be2 Nbd7 8.0-0 e6 9.Ne5 Be2 10.Qe2 Be7 11.Nd7 Nd7 (11...Kd7 12.d3=) 12.Bg7+= Rg8 13.Bc3 Qc7 14.Qh5 0-0-0? (better 14...Nf6 15.Bf6 Bf6+=) 15.Qf7+- Qh2?? (15...Qd6+-) 16.Kh2 Bd6 17.Kg1 Rdf8 (17...Rg6 18.Qh7 Rdg8 19.Qh3+-) 18.Qe6 Kc7 19.a4 (19.Bb4 Bc5+-) 19...Rg6 20.Qh3 Rff6 21.Bf6 Nf6 22.Nc3 Ng4 23.a5 (better 23.Qh7 Kb8 24.Qg6 Bh2 25.Kh1+-) 23...Bh2 24.Qh2! Nh2 25.Kh2 Rh6 26.Kg1 Rg6 27.a6 ba6 28.Ra6 1-0. black_bishop_88 (2475) - djec33 (2380), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.Nf3 Nf6 6.e3 Bg4 7.Be2 e6 8.0-0 Nbd7 9.c4 b5?? (better 9...Bf3 10.Bf3 dc4-/+) 10.cb5+= cb5 11.Nc3 Rb8 Black plans b4 (11...Bf3 12.gf3 Rb8 13.Qc2+=) 12.h3 (12.Nd4 Be2 13.Qe2 Rc8+/-) 12...Bh5 (12...Bf3 13.Bf3 Be7 14.d4=) 13.Re1 (13.Nd4 Be2 14.Qe2 Qb6+/-) 13...Be7 (13...Bf3 14.gf3 Bd6 15.Rb1=) 14.Qb3 (14.Nd4 Be2 15.Qe2 Qa8+/-) 14...b4 (14...0-0!?=) 15.ab4+= Qb4 16.Qb4 Rb4 (16...Bb4!? 17.g4 Bg6+=) 17.Ra8+/- Bd8? (better 17...Rb8!? 18.Rb8 Nb8 19.Bb5 Kd8+/-) 18.Ba3+- Rb8 19.Ra7?? (19.Rb8 Nb8 20.g4 Bg6 21.Bb5 Nbd7+-) 19...Be7? (19...Bb6 20.Ra4 Bf3 21.gf3+=) 20.Ra1?? (better 20.Be7 Ke7 21.g4 Bg4 22.hg4+-) 20...Ba3 21.R1a3 0-0?? (better 21...Bf3 22.gf3 0-0+=) 22.g4+- Bg6 23.g5 Ne4 (23...Rb2 24.gf6 Nf6 25.Nd1+-) 24.Rd7 Rb2 (24...Nc3 25.Rc3 Rb2 26.Rcc7+-) 25.Ra2 (better 25.Ne4 Be4 26.Raa7 Bf5+-) 25...Ra2 26.Na2 Rb8 (26...Bh5 27.d4+-) 27.d3 (better 27.Nc3!? h6 28.Ne4 de4+-) 27...Nc5 28.Rc7 Nd3 (28...Bd3 29.Nc3 Be2 30.Ne2+-) 29.Bd3 Bd3 30.Nc3 Bg6 31.Ne5 Kf8 (31...h6 32.gh6 (worse 32.Ng6 fg6 33.Na4 hg5+-) 32...gh6 33.Ne2+-) 32.Ng6 (better 32.Nd7 Kg8 33.Nb8+-) 32...hg6 33.Kg2 Rb2 34.h4 Rc2 (34...Ke8 35.Kg3+-) 35.Nb5 (better 35.Rc8 Ke7 36.Nd5 Kd6 37.Rc2 ed5 38.Kg3+-) 35...Rb2?? (35...Rc7 36.Nc7 Ke7 37.f4+-) 36.Rc5 (better 36.Nd6 f6 37.Rf7 Kg8 38.gf6 gf6 39.Rf6+-) 36...Ke7 37.Nd4 f6?? (37...Rb7+-) 38.Rc7 Kd6 (38...Ke8 39.Ne6 Rb6 40.Nf4 fg5 41.hg5+-) 39.Rg7 e5 (39...fg5 40.hg5 e5 41.Rg6 Kd7 42.Nf5+-) 40.Nf3 Rb4 (40...e4 41.Rg6 ef3 42.Kf3+-) 41.Rg6 e4 (41...d4 42.Rf6 Kd5 43.Rf5+-) 42.Rf6 Kc5 43.Nd4 Rd4 44.Rf5 (44.ed4 Kd4 45.g6 e3 46.fe3 Ke5 47.Rf3 d4 48.ed4 Kd4 49.g7 Ke5 50.g8Q Kd6 51.Rd3 Kc5 52.Qd5 Kb4 53.Rb3 Ka4 54.Qb5) 44...Kc4 45.ed4 Kd3 46.Rd5 Ke2 47.Re5 (47.Re5 Kd3 48.g6 Kd4 49.Re8 Kd5 50.g7 Kc5 51.g8Q Kc6 52.Qc4 Kb7 53.Qd5 Kb6 54.Rb8 Kc7 55.Rb7 Kc8 56.Qd7; 47.g6 Kd3 48.g7 Kc2 49.Re5 Kd3 50.g8Q Kd4 51.Qd5 Kc3 52.Qc6 Kd3 53.Rd5 Ke2 54.Qc3 e3 55.Qe3) 1-0. levtraru (2150) - RSerpaPuzzles (2130), Rated Bullet game, lichess.org, 2015. (=1.a3 A00: Irregular Openings 1...c6 2.b4 d5 3.Bb2 a5)

5.Nf3 Bg4 6.Ne5 Bf5=.

5.Nf3 Bg4 6.h3 Bf3=+ 7.gf3 Nd7 8.e3 e5 9.Rg1 g6 (9...Ngf6 10.c4=+) 10.f4= Bg7 11.fe5 Be5 12.Be5 Ne5 13.f4 Nd7 14.Nc3 Ngf6 15.Bd3 d4 (15...Nc5!?=+) 16.ed4= 0-0 17.Kf2 Rae8 18.Qf3 c5 19.d5 c4 20.Be4 (20.Bf1!?=) 20...Qc5 21.Kg2 (21.Kf1 Ne4 22.Ne4 Qd4-/+) 21...Qd4-/+ (21...Ne4?! 22.Ne4 Qd5 23.d3=+) 22.Rae1 Qd2 (better 22...Nc5!? 23.Nb5 Qd2 24.Re2 Qa5-/+) 23.Re2= Qd4 24.Kh2 (24.Rd1 Qc5=) 24...Nh5 (24...Qa7!?=+) 25.Rd1 Qf6 Attacking the isolated pawn on f4 26.f5 (26.d6!?=) 26...Ne5 (26...Qe5 27.Kg1 Ng3-+) 27.Qg2? (better 27.Qf2 Qd6 28.Kg1=+) 27...Qd6-+ 28.Kh1 Nf4 (28...Qa3?! 29.Re3-/+) 29.Qg5 (29.Qg3 Ne2 30.Ne2 Ra8-+) 29...Ne2 30.Ne2 Nd7 (30...Qa3 31.Qg3 Qd6 32.Nd4-+) 31.Ng3 (31.Qg3 Re5 32.fg6 fg6-+) 31...Qf6 (31...Qa3 32.Qf4-+) 32.Qh6 (32.Qf6 Nf6 33.Rd4 Ra8-+ (worse 33...Ne4 34.Ne4 Ra8 35.Rc4-+)) 32...Qg7 (better 32...Qc3 33.Qf4 Nf6-+) 33.Qg7-/+ Kg7 34.fg6 (34.d6 Nc5 35.Bd5 Re3-/+) 34...hg6-+ 35.d6 Nf6 (35...Nc5 36.Bd5-+) 36.Bb7 Rd8 (36...Re3 37.Kg2 Ra3-+) 37.d7? (better 37.Ba6=) 37...Rd7 38.Bc6?? (38.Rd7 Nd7 39.Ba6-+) 38...Rd1 39.Kg2 Rd2 40.Kf3 (40.Kf1 Rh8 41.Bg2 Re8-+) 40...c3 (better 40...Rc2 41.Ne4-+) 41.Nf5 (41.Ne2 Rc2 42.Nd4 Ra2-+) 41...gf5 42.Ke3 Rc2 0-1. black_bishop_88 (2520) - smeets (2705), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.Nf3 Bg4 6.h3 Bf3 7.gf3 Nd7 8.Bg2 Ngf6 9.0-0 g6 10.f4 Bg7 11.d3 Nh5 12.Bg7 Ng7 13.Nd2 Ne6 14.e3 Nec5 (14...Qc3 15.Nb3-/+) 15.Nb3 (15.d4 Na4=) 15...Nb3=+ 16.cb3 0-0 17.b4 Qb6 18.Qc2 e5 (18...d4 19.e4=+) 19.fe5= Ne5 20.Qc3 Rae8 21.Rfc1 f5 22.a4 f4 23.a5 (23.d4 Nc4 24.e4 Qd8 25.ed5 cd5=) 23...Qa7 (23...Qd8 24.ef4 Rf4 25.d4=) 24.e4 (24.d4 fe3 25.de5 ef2 26.Kh1 Qb8+=) 24...f3 25.Bf1 Qb8 (25...d4!? 26.Qb3 Kg7=) 26.d4+= Nf7 27.e5 Ng5 (27...Qd8 28.a6 Qh4 29.Qe3= (worse 29.Qf3 Ne5 30.Qg2 Nf3 31.Kh1 ba6-/+; 29.ab7?? Ng5 30.Qd2 Nh3 31.Bh3 Qh3-+)) 28.Qe3 Ne4 29.Bd3 Qc8 30.Be4?? (better 30.Kh2+/-) 30...Qh3-+ (30...de4 31.Kh2+/- (worse 31.Qe4 Qh3 32.Qg6 hg6 33.a6 Qg2)) 31.Bf3 Rf3 (worse 31...Qf3 32.Qf3 Rf3 33.b5 cb5 34.Rc5+/-) 32.Qg5 Ref8 33.Rc2?? (33.Qg2 Qh4 34.Ra2 R8f5-+ (34...Qd4?! 35.e6 Qb4 36.Re2-+)) 33...R3f5 (better 33...R8f4 34.Qd8 Kg7 35.Qf6 Rf6 36.ef6 Kf6-+) 34.Qg2 (34.Qg3 Qh5 35.f4 Rf4-+) 34...Qh6?? (better 34...Qh4 35.Ra3 Qd4-+) 35.Kf1?? (better 35.Ra3 Qf4 36.Rd3-+) 35...Rg5-+ 36.Raa2 Qh5 (36...Rg2 37.Kg2 Rf4 38.Rc3-+) 37.Qg5 Qg5 38.Ke2 (38.a6 ba6 39.Rc6-+) 38...Qg4 (38...Qg2 39.Kd2 Qf2 40.Kc3 Qe1 41.Kb3 Rf3 42.Ka4 Qe3 43.Rc3 Qc3 44.a6 b6 45.a7 Qb3) 39.Kd3 (39.Kf1 Rf5 40.f4-+) 39...Rf3 40.Kd2 Qd4 41.Kc1 Rc3 (41...Rh3!? 42.Kb1 Qb4 43.Rab2 Qe1 44.Ka2 Qa5 45.Kb1 Rh1 46.Rc1 Rc1 47.Kc1 Qe1 48.Kc2 Qf2 49.Kb1 Qb2 50.Kb2-+) 42.Rc3 Qc3 43.Kb1 (43.Kd1 Qe5 44.Rd2 Qe4-+) 43...Qb4 44.Rb2 Qa5 45.e6 (45.Rb7 Qe1 46.Kc2 Qf2 47.Kb1 Qe1 48.Kc2 Qe5-+) 45...Qe1 46.Ka2 Qe6 47.Rb7 d4 48.Ka3 (48.Kb2 Qe2 49.Kb3 d3 50.Rb8 Kg7 51.Rb7 Kh6-+) 48...c5 49.Rb6 Qb6 (49...Qb6 50.Ka2 c4 51.f4 Qb3 52.Ka1 c3 53.f5 Qb2) 0-1. black_bishop_88 (2520) - Frickers (2445), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.e3 Ra8 6.Nf3 Nf6 7.d4 g6 8.Nbd2 Bg7 9.Bd3 0-0 10.h4 (10.c4 Nbd7=) 10...Bf5 (10...b5 11.c3=+) 11.h5 (better 11.Bf5!? gf5 12.c4=) 11...Bd3-/+ 12.cd3 Bh8 (better 12...Nh5!? 13.Qb3 Nd7-/+) 13.hg6= hg6 14.Ne5 Bg7 15.Qf3 Re8 16.Qh3 Nbd7 17.g4 Nf8 18.g5 Nh5 19.Nf1 (19.f4 Be5 20.de5 c5+/-) 19...Qc8 (19...Qb6 20.Bc1=+) 20.Qh2 (20.Ng4 Ne6 21.Qh4 Nc5=) 20...Ne6 (20...Qf5 21.Qh3 Qh3 22.Rh3 Be5 23.de5-/+) 21.Ng3 (21.f4 Qc7+=) 21...Ng3 (21...Be5 22.de5 Ng5=) 22.fg3 (better 22.Qg3!? Qd8 23.Qh4=) 22...Ng5-/+ 23.0-0-0 (better 23.Qh4 Be5 24.Qg5-/+) 23...Qg4?? (23...c5 24.dc5 Qc5 25.Kb1 Qb5-+ (25...Qe3?? 26.Ng4 Qd4 27.Bd4 Bd4 28.Qh4+-)) 24.Rdf1 (better 24.Ng4 Ra4 25.Rdf1+-) 24...Qe6-/+ 25.Nf7?? (better 25.Kd2 Ra5 26.Qh4=+) 25...Nf7 (25...Qe3!? 26.Kc2 Nf3 27.Nh6 Bh6 28.Qh6 Qh6 29.Rh6-+) 26.Qh7 Kf8 27.Rf4? (27.Kd2 Red8-+) 27...Red8 (better 27...Qe3 28.Kc2 Qg3 29.Rff1-+) 28.Rhf1 (28.Kd2 g5 29.Rf2 Bf6-+) 28...Bf6 (better 28...Qe3 29.Kc2 Qe2 30.Kc1 Bf6 31.Qg6 Rd6-+) 29.Qg6-/+ Ke8 (better 29...c5!? 30.Kd1 c4-+) 30.Rf6= ef6 31.Rf6 Qe3 32.Kc2 Qe2 33.Kb1 Qe7 Exerts pressure on the isolated pawn 34.Re6 Rac8?? (34...Qe6! 35.Qe6 Kf8=) 35.Re7 (better 35.a4!? Kf8 36.Re7 Ke7 37.Ba3 Rd6 38.Qg7+- (38.Bd6?! Nd6 39.Qg7 Ke6+-)) 35...Ke7+= 36.a4 Rg8?? (better 36...Rd7+/-) 37.Ba3+- Ke8 (37...c5 38.Bc5 Rc5 39.Qg8 Rc6+-) 38.Qe6 Kd8 39.Qe7 1-0. black_bishop_88 (2520) - TorVik_1 (2355), Ukrainian Bullet League, lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.Nf3 Ra8 6.e3 Bg4 7.Be2 Bf3 8.Bf3 e6 9.0-0 Nf6 10.c4 (10.d3 Bd6=) 10...Nbd7 (10...dc4 11.a4=+) 11.cd5= ed5 12.Nc3 Be7 13.h3 0-0 14.d3 Re8 15.e4 d4 16.Ne2 c5 17.g3 b5 18.Bg2 Qa5 19.f4 Ra6 (better 19...Nb6!?=) 20.e5+= Nh5 21.g4 Rh6? (better 21...Nf4 22.Nf4 Ne5+=) 22.gh5+- Rh5?! (22...Nb6 23.Bc1 Nd7 24.Ng3+-) 23.Ng3 (23.Nd4 Rh6 24.Nc6 Qb6+-) 23...Rh4?? (better 23...Rh6+-) 24.Nf5 c4 (24...Nb8 25.e6 g6 26.Qb3+-) 25.Nh4 (25.dc4!? bc4 26.Bd4 Qc7+-) 25...Bb4 (25...c3 26.Nf5 cb2+-) 26.ab4 (26.ab4 Qb4 27.Bd4+-) 1-0. black_bishop_88 (2500) - VincentBlom (2520), lichess.org, 2020. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

5.Nf3 Nf6 6.g3 (6.e3 e6=) 6...Bf5 7.Bg2 Nbd7 8.d3 e6 9.0-0 h6 (9...Bd6 10.Nd4=+) 10.Qe1 (10.c4 dc4 11.dc4 Qa8=) 10...Be7 11.Nbd2 0-0 12.e4 Bh7 13.Nb3 Ra4 14.e5 Ne8 15.Nfd2 Nc5 (15...b5 16.Nb1=+) 16.Nc5 Bc5 17.Nb3 Ba7 Black prepares d4 18.Qe2 c5 19.Kh1 (19.Rfb1 b5=+) 19...b5 Black prepares the advance c4 20.f4 d4 21.Be4 (21.Nd2=+) 21...c4 (21...Be4!? 22.Qe4 Nc7-/+) 22.Bh7 (22.dc4 Be4 23.Qe4 bc4 24.Nd4 c3 25.Bc3 Bd4= (worse 25...Rd4 26.Bd4 Qd4 27.Qd4 Bd4 28.Rad1+/-)) 22...Kh7 23.Qe4 Kg8 24.Nd4?? (24.dc4 bc4 25.Nd4 c3 26.Bc3 Bd4= (worse 26...Rd4 27.Bd4 Qd4 28.Qd4 Bd4 29.Rad1+/-)) 24...cd3?? (better 24...c3 25.Bc3 Bd4 (25...Rd4?! 26.Bd4 Bd4 27.Rab1=) 26.Bd4 Rd4-+) 25.c3= Bd4 26.cd4 Qd5 (26...Nc7 27.Qd3 Qd5 28.Qf3+=) 27.Qd5+/- ed5 28.Rfd1 Nc7 29.Rd3 Rfa8 30.f5 b4 (better 30...Rc4+/-) 31.Kg2?? (better 31.Rb3 Rb8 32.Kg2+/-) 31...Nb5= 32.Rb3 ba3 (32...Na3!? 33.Ba3 ba3=) 33.Rb5+= ab2 34.Ra4 Ra4 35.Rb2 Rd4 36.Re2 White plans e6 (36.Rb8 Kh7+=) 36...g6 37.e6 fe6 38.fe6 (38.fg6 Re4 39.Re4 de4+/-) 38...Kf8= 39.e7 Ke8 40.Re6 g5 41.h3 Re4 42.Re4 de4 43.Kf2 Ke7 44.Ke3 Ke6 45.Ke4 h5 46.g4 hg4 47.hg4 Kf6 48.Kd5 Ke7 49.Ke5 Kf8 50.Kf5 1-0. black_bishop_88 (2515) - Casttuper (2385), lichess.org, 2020.

5.Nf3 Bg4 6.e3 e6 7.Be2 (7.h3 Bh5=) 7...Bd6 8.0-0 Nbd7 9.h3 Bf3 10.Bf3 Be5 (10...Qa5 11.d3=+) 11.d4= Bd6 12.c4 Ra5 13.Nd2 0-0 14.e4 de4 15.Ne4 Ne4 16.Be4 Nf6 17.Bc2 Rg5 (17...b5 18.Qf3 bc4 19.Qc6 Bh2 20.Kh1=+) 18.Qd3 (18.Qf3 Qc7=) 18...Bc7 (18...b5!?=) 19.d5+= g6 (19...Qd6 20.f4 Rh5 21.Bf6 gf6 22.Qf3+=) 20.dc6+/- bc6 21.Qd8 Rd8?? (better 21...Bd8 22.a4 Kg7+/-) 22.Bf6+- Rd2 23.Bg5 Rc2 24.Be3 (24.Rfc1 Rc1 25.Rc1 Kf8+-) 24...Rc4 (24...Be5 25.Rfc1 Re2 26.Kf1 Re3 27.fe3+-) 25.a4 Ba5 (25...Be5 26.Rfc1 Rb4 27.Ra2+-) 26.Rfc1 (26.Rfc1 Rc1 27.Rc1+-) 1-0. black_bishop_88 (2555) - Parmen_Gelazonia (2550), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.Nf3 Bg4 6.Bf6 ef6=+ 7.h3 Bh5 8.e3 Nd7 9.Be2 Bd6 10.0-0 0-0 11.Nc3 (11.Nd4 Be2 (11...Qa5? 12.Bh5 Be5 13.Qg4+-) 12.Qe2 Be5=) 11...Bg6 (11...Bf3 12.Bf3 Qa5 13.Bg4=+) 12.Nd4 (12.a6 ba6 13.Nd4 Qc8=) 12...Ra5=+ Attacking the isolated pawn on a3 13.Bg4 (13.f4 f5=+ (worse 13...Ra3 14.Ra3 Ba3 15.f5+-)) 13...Ne5 14.Nf5 (14.Be2 f5= (worse 14...Ba3 15.Nb3 Ra8 16.f4+=)) 14...Ra8 (14...Ng4 15.hg4 Ba3 16.d3-/+) 15.Ne2 (15.Nd6 Qd6 16.Be2 d4 (worse 16...Ra3 17.Ra3 Qa3 18.f4+/-) 17.ed4 Qd4=+) 15...Bc7 (15...Ng4!? 16.hg4 Ba3-/+) 16.Nf4=+ Re8 17.h4? (17.Ng6 A) worse 17...Ng4 18.Nge7 (worse 18.Qg4 fg6 19.Ng3 b5-/+) 18...Re7 19.Qg4+/-; B) 17...fg6 18.Nd4 Ng4 19.Qg4 f5-/+) 17...Bf5 (better 17...Ng4!? 18.Qg4 Qc8-+) 18.Bf5-/+ Qd6 (18...g6 19.Bd3-/+) 19.d4 Nc4 The pressure on the isolated pawn grows 20.Qg4 Kh8 21.h5 g5 22.hg6 fg6 23.Ng6?? (better 23.Bd3=+) 23...hg6-+ 24.Qh3 Kg7 25.Bd3 Rh8 (worse 25...Ra3 26.g3-+; worse 25...Na3 26.g3 f5 27.Rfc1-+) 26.Qg3 Qg3 27.fg3 Bg3 (better 27...Ne3!? 28.Rfe1 Rhe8 29.Re2-+) 28.Bc4 dc4 29.Rf3 Bd6 30.a4 b5 31.Rb1 (31.a5 Ra6-+) 31...b4 (31...Ra4 32.c3-+) 32.e4 (32.Ra1 b3 33.cb3 cb3-+) 32...Ra4 33.e5 (33.Re3 c5 34.d5 Be5-+) 33...fe5 34.de5 (34.Rbf1 ed4 35.Rf7 Kh6-+) 34...Be5 (better 34...Bc5 35.Rf2 Ra2-+) 35.Re3 (35.Kf2-+) 35…Bd4 (35...Bd4 36.Kf1 Be3-+) 0-1. black_bishop_88 (2465) - Pedrosky007 (2385), lichess.org, 2020. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

6.Ba1 Qd6 7.b5 =.

6.Ba1 f6 7.b5 e5 8.Nf3 e4 9.Nd4 c5 10.Nb3 c4 11.Nd4 Nd7? (11...Nh6!?=) 12.Ne6 (12.Qh5!? g6 13.Qd5 Ne7 14.Qc4 Ne5+-) 12...Qe7 (12...Qa5 13.Bc3 Qa4+/-) 13.Qh5?? (better 13.Nc7 Kd8 14.Nd5+-) 13...g6=+ 14.Qd5 (14.Nc7 Kd8 15.Qd5 Kc7=+) 14...Nb6-/+ 15.Nc7 Qc7 16.Qe4 Kf7 17.d3 (17.Bd4 Na4-/+) 17...Bf5-+ 18.Qf3 (18.Qd4!?-+) 18...cd3 19.c3 (19.Bd3 Bb4 20.Kd1 Qd7-+) 19...Nh6 (19...Qe7!? 20.h4-+) 20.e4 Bg4 21.Qd3 Be7 (21...Bc5 22.Be2-+) 22.f3 Rd8?? (22...Be6 23.Bb2-+) 23.Qc2? (better 23.Qe3 Kg7 24.fg4 Ng4 25.Qf3 Nh2 26.Rh2 Qh2 27.Nd2-+) 23...Be6-+ 24.Nd2 Ra8 25.Bb2 (25.Qc1 Qf4 26.Be2 Qe3-+) 25...Ra2 26.Qb1 (26.c4 Bb4 27.Qb3-+) 26...Na4 27.Bc1 (27.Ba1 Qc5 28.Kd1 Ra1 29.Qa1 Nc3 30.Kc2 Ne4 31.Bc4 Nd2 32.Kd2 Bc4-+) 27...Nc3 28.Qd3 Qd7 (better 28...Ne4 29.Qc4 Bc4 30.Bc4 Kg7 31.fe4 Rd2 32.Bd2 Qc4-+) 29.Qd7?? (better 29.Qc3 Kg7 30.Nb3+=) 29...Bd7-+ 30.Bc4 Be6 (30...Ke8 31.Ba2 Na2 32.Bb2-+) 31.Ba2-/+ Ba2 32.Bb2 Na4 (better 32...Nb5 33.Ke2 Bd6-+) 33.Bd4= f5 (33...Bb4 34.Ke2 Nc3 35.Bc3 Bc3 36.Rc1=) 34.Kf2 fe4?? (34...Be6=) 35.Ne4?? (better 35.Ra1 Be6 36.Ra4+-) 35...Ke6 (35...Nf5!? 36.Ra1 Nd4 37.Ra2 Nc5-/+) 36.Ra1= Nf7?? (better 36...Bb3=) 37.Ra2+- Nc5 (37...Nd6 38.Nd6 Bd6 39.Ra4+-) 38.Bc5 Bc5 39.Nc5 Kd5 (39...Kd6 40.Nb7 Kc7 41.Re2 Kb7 42.Re7 Kb6 43.Rf7+-) 40.Nd3 (40.Nb7 Ne5 41.Rd2 Kc4 42.Nd6 Kc5 43.Ne4 Kb4+-) 40...Ne5 (40...Kc4 41.Nf4 g5 42.Rc2 Kb5 43.Rc7+-) 41.Nf4 (better 41.Ne5 Ke5 42.Ra7 Kd6+-) 41...Kc5 42.Ne2 (42.Rd2 Kb6+-) 42...Kb6 (42...Kb5 43.Ke3 Kc5+-) 43.Rb2 (better 43.Rd2+-) 43...Nd3+= 44.Ke3 Nb2 45.Nd4 Kc5 (45...Nc4 46.Kd3 Nd6+=) 46.Nc2 (better 46.Ne6!? Kb5 47.Nf8+/-) 46...Kb5= 47.Nd4 Ka6 (47...Kc4!? 48.Ne6 b5=) 48.Ne6 Nc4 (48...b5 49.Nf8 Nc4 50.Kd4+/-) 49.Kd4+= Nd6 50.Nf8 Ne8? (better 50...Nf5 51.Ke4 b5+=) 51.Nh7+- Nc7 (51...Nd6 52.Nf8 Nf5 53.Ke4+-) 52.Nf8 (52.h4 Ne6 53.Ke5 Nc5+-) 52...Nb5 (52...g5 53.Nh7 Ne6 54.Ke5+-) 53.Kc5 Nc7 54.Kb4 (better 54.h4 b5 55.Ng6+-) 54…b6 (54...b6 55.Ng6 Nd5 56.Kb3 Nf6+-). DiabloC_137 (2325) - universe64 (2445), lichess.org, 2020. (=1.a3 c6 2.b4 d5 3.Bb2 a5)

7.b5 Bf5 8.g4 Bg6 9.Nf3 Nd7 10.Bd4 c5 11.Bb2 Ngf6 12.g5 Ne4 13.Nc3 Nc3 14.Bc3 e6 15.Nh4 d4 16.Ng6 hg6 17.Bb2 Be7 18.f4 e5 19.ed4 ef4 20.Qg4 Qd6 21.dc5 Qc5 22.Bg7 Rh5 23.Qf4 Rg5 24.Qe4 Rd5 25.Bc4 Rf5 26.Rf1 Nb6 27.Bd3 Rf1 28.Bf1 1–0. marekt – leliebeest, gameknot.com, 2001.

7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

8.c4 e6 9.Nf3 Be7 10.Be2 0-0 11.0-0 cb5 (11...dc4 12.Bc4 cb5 13.Be2=) 12.cb5 Nbd7 13.Qc2 Qc5 14.Qb2 b6 15.Rc1 Qd6 16.Qc2 (16.Nd4 Bb7+=) 16...Bb7= 17.Bb2 Rc8 18.Qd1 Rc1 19.Qc1 Qc5 20.d4 Qc1 21.Bc1 Ne4 22.Nfd2 Nd2 23.Bd2 e5 24.Nc3 e4 25.Kf1 f5 26.Ke1 Kf7 27.Kd1 Ke6 28.Kc2 Nf6 29.h3 g6 30.Na4 Nd7 31.Kb3 Bd6 32.Bb4 Bb4 (32...Bh2 33.Nc3=) 33.Kb4 Kd6 (33...g5 34.g3=) 34.g4+= Ke6 35.gf5 (35.g5 Ke7+=) 35...gf5 36.Bh5 (36.f3 Kd6+=) 36...Ke7 37.Bd1 Kd6 38.Bb3 Ke7 39.Nc3 Nf6 40.Ne2 Nh5 41.Bd1 Kd6 42.Nc3 Nf6 43.Na4 Kc7 44.h4 Ba8 45.h5 h6 46.Be2 Bb7 47.Nc5 (47.Kc3 Ng4=) 47...Bc8 (47...bc5 48.dc5 Bc8 49.Kc3-/+) 48.Na6 (better 48.Na4!?=) 48...Kd6 49.Nc5 Be6 (49...bc5 50.dc5 Kc7 51.Kc3-/+) 50.Ne6? (better 50.Na4!? Kc7 51.Nc3=+) 50...Ke6-+ 51.Kc3 Ng4 52.Bg4?? (better 52.Bd1-+) 52...fg4 53.Kd2 Kf5 54.Ke2 Kg5 55.Kf1 Kh5 56.Kg2 Kg5 57.Kg3 h5 58.Kg2 h4 59.Kh2 Kf5 60.Kg2 Kg5 (60...h3!? 61.Kg1-+) 61.Kh2 Kg6 62.Kg2 Kh6 63.Kh2 Kg5 64.Kg2 Kf5 65.Kh2 g3 (better 65...h3 66.Kh1-+) 66.fg3 hg3 (better 66...Kg4 67.gh4 Kh4-+) 67.Kg3= Kg5 68.Kh3 Kh5 69.Kg3 Kg5 70.Kh3 Kh5 ½-½. carlos78 (2180) - kekss5 (2280), Rated Blitz game, lichess.org, 2015.

8.c4 Be6 9.cd5 Nd5 10.e4=.

8.c4 Bf5 9.Nc3 e6 10.Nf3 Nbd7 (10...Be7 11.bc6 Nc6 12.Nh4=) 11.bc6 (11.Nh4 Bg6=) 11...bc6 12.Nd4 (12.Nh4 Be4=) 12...Bg6 13.Qa4 c5 (13...Nb8 14.cd5 ed5 15.Be2=) 14.Ndb5 (14.Nc6 Bd6=) 14...Qb7 (14...Qc6 15.cd5 ed5 16.Qa5=) 15.cd5 ed5 (worse is 15...Nd5 16.Nd5 ed5 17.Bg7+/–) 16.Qa5 Be7 17.Nc7 Kf8 18.Ba6 Qb6 (18...Qb8 19.N7b5+= (19.N7d5? Nd5 20.Bb5 Bd8–+)) 19.Qb6 Nb6 20.0-0 (20.Bb7 d4 21.ed4 cd4=) 20...Bd8 21.N3b5 Ne4 (21...Bd3 22.Rc1 Ne4 23.f3 Nd2 24.Rc5 Bb5 25.Bb5=) 22.d3 Nd2 23.Rd1+= Nb3 24.Bb2 Na4 25.Be5+/– d4 26.ed4 cd4 27.Bd6 Be7?? 28.Re1+– h5 29.Re7 Kg8 30.Be5 Kh7 31.Nd4 Nd4 32.Bd4 Rd8 33.Be3 Bd3 34.Bd3 Rd3 35.h3 Kg6 36.Nb5 Nb2 37.Nd4 Nc4 38.Nf3 f6 39.Nh4 Kh7 40.Nf5 (40.Nf5 Rd5 41.Rg7 Kh8 42.Rc7+–) 1–0. Bianchi,G – Sorin,A, Buenos Aires, 1985.

8.c4 Bf5 9.Nc3 e6 10.Nf3 Be7 11.Be2 (11.cd5 ed5 12.Nd4 Bg6=) 11...0-0 (11...dc4 12.Bc4 0-0 13.0-0=) 12.0-0 (12.bc6 Nc6 13.Nh4 dc4 14.Nf5 ef5 15.Bc4 Ne5=) 12...Nbd7 (12...dc4 13.Bc4 Rc8 14.d3=) 13.d4 (13.bc6 bc6 14.Nh4 Bg6+=) 13...dc4= 14.Bc4 Nd5 (14...Ra8 15.Qe2=) 15.Qb3 (15.bc6 Qc6 16.Qb3 Nc3 17.Qc3 Qd6=) 15...Nc3 (15...Ra8 16.e4 Ra3 A) 17.Nd5? cd5 18.Qb2 Be4–+ (18...dc4?! 19.ef5 Rb3 20.Qc2-/+); B) 17.Qc2=) 16.Bc3 cb5 17.Qb5 (worse is 17.Bb5 Bd3!? 18.Rb1 Bb1 19.Qb1 Nf6–+) 17...Qb5 18.Bb5 Nb6 (18...Rc8 19.Bd7 Rc3 20.Ra1+=) 19.Ba5 (19.Re1 Nd5 20.Bb2 Be4=) 19...Nd5 20.Rc1 Ra8 21.Be1 g6 22.h3 h5 23.Nd2 Bb4 24.Nf3 Be1 25.Ne1 Ra5 26.Bf1 Nb4 27.f3 g5 28.e4 Bg6 29.Rc8 Kg7= 30.Rc7 Nc6 31.Rd7 Ra1 32.Nd3 Rb1 33.Nc5 Kf8 34.d5 ed5 35.ed5 Na5 36.d6 Bf5= 37.Rc7 Rd1 38.d7 Ke7+= 39.d8Q Kd8 40.Rf7 Bc2 41.Kf2+/– b6 42.Ne6 Ke8 43.Rg7 Rd5 44.Ng5 Ba4 45.f4+– Bd7 46.Be2 h4 47.Ne4 Kf8+/– 48.Rg8 Kg8 49.Nf6 Kf7 50.Nd5 b5 51.Bh5 Ke6 52.Nb4 Kd6 53.Bg4 Be8 54.Ke3 Nc6 55.Nd3 Bf7 56.Bf3 Ne7 57.Be4+/– Nd5 58.Kd4 Nf6 59.Ne5 Bh5 60.Bf3 Be8 61.Be2 Nd5 62.Nd3 Bg6+= 63.Bf3 Nc7 64.Be4 Be8 65.Ne5 Bh5 66.Bf3 Be8 67.Be4 Bh5+– 68.f5 Ne8 69.Bd3 b4 70.Bc4 Nf6 71.Nd3 Bd1? 72.Nb4+– Nd7 73.Nd3 Bc2 74.Be6 Bd3 75.Kd3 Nf6 76.Ke3 Ke5 77.Kf3 Nh5 78.Bc8 Nf4 79.g3?? Nh3? 80.gh4 Nf4 81.Kg4 Nd5 82.Kg5 Ne7 83.Be6 Nc6 84.h5 Nd4 85.h6 Nf3 86.Kg6 Nh4 87.Kg7 Nf3 88.h7 Ng5 89.h8Q Ne4 90.Kf7 Kf4 91.Qh4 Ke5 1–0. Koester,Roman (2085) – Schneider,Heiko (2205), Oberliga East B, 2006.

8.c4 Bf5 9.Nf3 e6=.

8.Be2 Nbd7 =.

8.Nf3 Bf5 9.Be2 e6 10.0-0 Be7 11.Nh4 Bg6 12.Ng6 (12.Nc3 Bd6=) 12...hg6 13.bc6 bc6 14.c4 Nbd7 15.d4 Ne4 (15...Qc7 16.h3+=) 16.Nd2 Nd2 17.Qd2 f5 (17...Qb3 18.c5+=) 18.Bc3 (18.h3 Qb3+/–) 18...Qb8 (18...g5 19.h3+=) 19.g3 (19.h3 Nf6+/–) 19...g5+= 20.Qc2 (20.Bd3 g4+=) 20...Kf7 21.c5 Nf6 22.f3+/– g6 23.Rb1 Qf8 24.Rb6 g4 25.f4 Ne4 26.Bd3 Nc3 27.Qc3 g5 28.Rc6+- gf4 29.ef4 Qh6 30.Qb2 Bf6 31.Qb7 Kg6 32.h4 gh3 33.Re6 h2 34.Kh1 Qh5 35.Be2 Qh3+= 36.Rf6 Kf6 37.Qc6 Kg7 38.Qd7 ½–½. Muri,H – Terpstra,W, (year?).

8.Nf3 Bg4 9.c4=.

5.c4 e6 6.Nf3 Qc7 7.Be2 e5 (better is 7...Ngf6!?=) 8.cd5+/– cd5? (8...ab4 9.ab4 Ra1 10.Ba1 Bb4 11.Nc3+=) 9.0-0 (better is 9.Nc3 Ne7 10.Rc1+-) 9...Ngf6 (9...e4 10.Nd4 ab4+-) 10.Nc3+/– ½–½. mr5reasons1 (1830) – lovechess00007 (1910), gameknot.com, 2013.

5.c4 Ngf6 6.cd5 cd5 7.Nf3 g6 8.Be2 Bg7 9.0-0 0-0 10.d4 Ne4 11.Nbd2 Ndf6 12.Ne4 Ne4 13.Nd2 Nd6 14.Bf3 e6 15.e4 de4 16.Be4 ab4 17.ab4 Ra1 (17...Ne4? 18.Ra8 (< 18.Ne4 Ra1 19.Qa1 Qd5=+) 18...Nd2 19.Qd2+-) 18.Ba1 Qb6 19.Qf3 Qb4 20.Qc3? (Better is 20.Bc3!? Qb5 21.Rb1-/+) 20...Qc3-+ 21.Bc3 Rd8 22.Bd3 Bd7 23.Rb1 Bc6 24.Nb3 Ra8 25.Bb4 Ne8 26.Bc3 Nc7 27.Nc5 Nd5 28.Bb2 b6 29.Nb3 Nb4 30.Rd1? Bd5 31.Nc1 Rc8 32.Bb1 b5 33.f3 Bc4 34.Kf2 Bh6 35.Ke1 Nd5 36.Bd3 Ne3 37.Rd2 Bd3 38.Nd3 Nc2 39.Kd1 Ne3?? 40.Ke2?? Ng2-+ 41.f4 Nf4 42.Nf4 Bf4 43.Rd3 Rc2 44.Kf3 Rb2 45.Kf4 Rh2 46.Rb3 Rf2 47.Ke5 h5 48.Ke4 Rf5 49.Rc3 h4 50.Rc8 Kg7 51.Rc1 g5 52.Ke3 h3 53.Rh1 g4 54.Ke4 b4 55.d5 Rd5 56.Kf4 f5 (57.Kg3 e5-+) 0–1. Melzig,Ernst – Eckl,Josef (1650), 12sen.WttgEM/Ellwangen, 2000.

5.c4 ab4 6.Nf3 dc4-/+ 7.Bc4 b5 8.Be2 e6 9.ab4 Ra1 10.Ba1 Nf6 11.0-0 Bb4-/+ 12.Qb3 Be7 13.d3 0-0 14.Rc1=+ Qb6 15.Nbd2 Rd8 16.Nh4 Bg6 17.Ng6= hg6 18.d4 Nbd7 19.Bb2 Ra8 20.Nf3 Ne4 21.Bd3 Nd6 22.Bg6+= Nc4 23.Be4 c5?? 24.Ba8+- (24...Nb2 25.Qb2+-) 1–0. pierre (2055) – GmLencioni, internet, 2006.

5.c4 dc4 6.Bc4 ab4 7.ab4 Ra1 8.Ba1 =+.

5.c4 Nd7 6.cd5= cd5 7.Bb5 e6 8.Nf3 f6 (8...Ngf6 9.Qa4=) 9.ba5 (9.Nd4 Nh6=) 9...Ra5 10.a4 (10.Nc3 Bc5=) 10...Kf7 (10...Bd6 11.Nd4 Nh6 12.Qh5 Bg6 13.Qh3+=) 11.0-0 (11.Bc3 Ra8+=) 11...Bd6 12.Nd4 (12.Nh4 Ne7+=) 12...Bg6 13.Nc3 (13.f4 Ne7+=) 13...Ne7 14.f4 Nf5? (better is 14...Nc5+=) 15.Nf5+- Bf5 16.g4 Be4 (16...Bg6 17.f5+-) 17.d3 (17.Ne4?! de4 18.Qc2 Nc5+/–) 17...h5? (17...Bg6 18.f5 Kg8 19.fg6 hg6+-) 18.de4 hg4 19.ed5 e5 20.Ne4 Qb6 21.Qg4 Qe3 22.Rf2 Qe4 23.Qd7 Be7 24.Qe6 (24.Qe6 Kg6 25.Qe7+-) 1–0. marr – tzychna, internet, 2010.

5.c4 e6 6.Nf3 Nf6 7.b5 Nbd7 8.d4 c5 9.Be2 Be7 10.0-0 0-0 11.Nbd2 Bg6 12.Nh4 Be4 13.f3 Ng4?? 14.fg4?? Bh4+= 15.Ne4 de4 16.d5 Qe8 17.Rf4 ed5 18.Qd5+/– Qc8 19.g5 Nb6 20.Qf5 Qf5+= 21.Rf5 Na4 22.Rb1 f6 23.gf6 Bf6 24.Bf6+= Rf6 25.Rf6 gf6 26.Rf1 Kf7 27.Rf5 Rd8= 28.Kf1 (28.Bh5 Ke7 29.Kf2 Rd3=) ½–½. Dessing,Bastiaan – Lambrechts,Koen, Hengelo U14 open, 2003.

5.Nf3 Nf6 =.

5.ba5 Qa5 6.Be2 Bf5 7.g4 Bg6 8.g5 Ne4 9.h4 h5 (9...h6 10.Bh5 Bh5 11.Qh5-/+) 10.Nf3 Nd7 11.Nc3 e5 12.Ne4 de4 13.Bc3 Qc7 14.Nh2 Ra3 15.Ra3 Ba3 16.Qa1 (16.Nf1 b5-/+) 16...Bd6 17.Nf1 Ke7 (17...b5 18.Ng3-/+) 18.Ng3 b5 19.0-0 (19.Qd1!?-/+) 19...f6 20.gf6 gf6 21.Kh1 Nc5 22.Ba5 (better 22.Bb4!?-/+) 22...Qd7-+ 23.Kh2?! (23.Bb4 Qh3 24.Kg1 Rd8-+) 23...Ra8 24.Rg1 Nb7 25.Ne4 (25.Bh5 Ra5 (worse 25...Na5 26.Bg6 Qc8 27.Be4+/-) 26.Qd1 Bh7 27.Ne4 Kd8-+ (27...Be4?! 28.Rg7 Kd8 29.Rd7 Kd7 30.d3-/+)) 25...Ra5 (25...Na5 26.Rg6 Qe6 27.Rg7 Kf8 28.Qg1+-; 25...Be4 26.Rg7 Ke6 27.Rd7 Kd7 28.Qg1 Ra5 29.d3-/+) 26.Qa5 (26.Qc3 b4 (26...Be4?! 27.Rg7 Kd8 28.Rd7 Kd7 29.Bh5-+) 27.Qb3 Qe8 (27...Be4?! 28.Rg7 Kd8 29.Rd7 Kd7 30.Qf7 Kc8 31.d3-/+) 28.Nd6 Nd6-+ (28...Kd6?! 29.Qb4 Kc7 30.Rb1=+)) 26...Na5 (26...Be4?! 27.Rg7 Kf8 28.Rd7 Na5 29.Ra7 Bc2 30.Ra5=) 27.Rg6 Qf5 28.Rg7 Ke6 (28...Kd8 29.d3-+) 29.d3? (29.Bd3 Bf8 30.Nc5 Bc5 31.Bf5 Kf5-+) 29...Be7 (29...Bf8!? 30.Ra7 Nc4 31.Kg2 Qg6 32.Ng3-+) 30.Bf1 (30.Kg2 Bf8 31.Ra7 Qg6 32.Ng3 Bb4-/+) 30...Qf3 31.Bh3 f5 32.Rg6? (32.Rg5-+) 32...Kf7 33.Ng5 (33.Rg5 fe4 34.Rf5 Qf5 35.Bf5 Bh4 36.Kg2 ed3 37.Bd3-+) 33...Bg5 (33...Kg6?! 34.Nf3 Bd6 35.e4 fe4 36.de4=) 34.Rg5 Qf2 35.Rg2 Qh4 36.Rg3 f4 (better 36...e4 37.Rg2-+) 37.ef4 (37.Rf3 b4 38.Kg2 b3 39.cb3 Nb3-+) 37...ef4 (better 37...Qf4!? 38.Kg2 Qd2 39.Kg1 Qc2 40.Bf5-+) 38.Rf3 Nb7 (38...c5 39.Kg1-+) 39.Kg2 Nd6 40.Kg1 (40.Kf1 Kf6 41.Ke2 b4-+) 40...Kg6 41.Bg2 Nf5 42.Rh3 (42.Rf2 Ne3 43.Be4 Kh6 44.Rg2 Qe1 45.Kh2 Ng4 46.Rg4 hg4 47.Kg2 Qe2 48.Kg1 f3 49.Bf3 gf3 50.d4 Qg2) 42...Qe1 43.Kh2 Ng3 (43...Ne3 44.Re3 fe3 45.Bh3 Qf2 46.Kh1 e2 47.Bf5 Kf5 48.d4 e1Q) 44.Rh4 Nf1 45.Bf1 Qh4 (45...Qf2 46.Kh1 Qf1 47.Kh2 Qf2 48.Kh1 f3 49.Rg4 hg4 50.d4 Qg2) 46.Bh3 Qg3 47.Kh1 f3 48.Bf1 f2 49.Bg2 h4 (49...h4 50.d4 h3 51.Be4 Kg5 52.Bc6 f1Q; 49...Qh4 50.Bh3 Qh3) 0-1. black_bishop_88 (2605) - xtremeungar (2505), lichess.org, 2020. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

5.b5 Bg4 6.f3 Bh5 7.a4 (7.Nh3 Nbd7=) 7...c5 8.g4 Bg6 9.h4 h5 (9...h6 10.Nh3=) 10.g5= Nfd7 11.Bh3 e6 (11...Nb6 12.d3=) 12.Ne2 Nb6 13.Nf4 Bf5 14.Bf5 ef5 15.g6 (15.Qe2 Nc4 16.Bc3 Nb6+/-) 15...Qd7 16.gf7 Qf7 17.Rg1 Rg8 18.Qe2 N8d7 19.Qg2 g6 20.Nc3 0-0-0 21.Nce2 Nc4 22.Bc3 Be7 23.0-0-0 (23.Qf2!?=+) 23...Bh4-/+ 24.Ng6 Bf6 25.Nef4 d4 (better 25...Bc3!? 26.dc3 Ne3-+) 26.ed4-/+ cd4 27.Ba1 Na3 (27...d3!? 28.Rde1 Ba1 29.Ne7 Qe7 30.Re7 Rg2 31.Rg2 Bb2 32.Kb1-+) 28.Kb2-/+ (28.Nh5 Qa2 29.d3 Rge8 30.Ne7 Re7 31.Qe2 Re2 32.Nf6 Qa1) 28...Nc4 29.Kc1 Nc5 (better 29...d3 30.Rde1 Ba1 31.Ne7 Qe7 32.Re7 Rg2 33.Rg2 Bb2 34.Kb1 Bf6-+) 30.Qe2?? (30.Nh5 Na3 31.Nf6-+) 30...d3 (better 30...Na3 31.Ne7 Be7-+) 31.cd3?? (31.Qf2 Na4 32.Rde1 Ba1 33.Ne7 Kb8 34.Nd3 Rg1 35.Qg1 Rd3 36.cd3-+) 31...Na3 (31...Nb3 32.Kb1 Na3 33.Ka2 Nc1 34.Ka3 Qb3) 32.Bf6 (32.Ne5 Qb3 33.Rg8 Qc2) 32...Qa2 33.Qe6 Ne6 34.Bb2 (34.Ne7 Kd7 35.Rg8 Qc2) 34…Qb1 0-1. black_bishop_88 (2440) - Sitojumi (2615), lichess.org, 2020. (=1.b4 c6 2.Bb2 a5 3.a3 d5)

5.c4 ab4 6.ab4 Ra1 7.Ba1 Qb6 8.Bf6 (8.b5 Bg4 9.f3 Bf5=) 8...ef6=+ 9.b5 Be6 10.cd5 cd5 (10...Bd5 11.Nc3=) 11.Nf3 Nd7 (11...Bb4 12.Be2=) 12.Nc3 (12.d4 Qa5 13.Nfd2 Nb6=) 12...Bb4 (12...Bd6 13.Nd4=) 13.Qb3 Attacking the isolated pawn on d5 (13.Qa4 Bd6=) 13...Qc5 (13...Qd6 14.Na2 Ba5 15.Be2=) 14.Na2 (14.Be2 0-0=) 14...Ba5 15.Qb2 0-0 16.Be2 (16.Bd3 Rc8=) 16...Ne5 17.Ne5 (17.0-0 Rc8 18.Rc1 Qd6=) 17...fe5 18.Qe5 Qc2 Threatening mate: Qxd2 19.Nc3 Rc8 (19...Qc1!? 20.Bd1 d4–+) 20.Bd1=+ Qb2 (20...Qc1 21.0-0 Qd2 22.Ne2=) 21.0-0 Qd2 22.Ne2 h6 23.Nd4 Bc3 24.Bf3 Bd4 25.ed4 Qa2 26.h3 Qc4 27.Be2 Qb4 28.Bd3 Qd2 29.Be2 Kh7 30.Rd1 Qb2 31.h4 Rc1 32.Bd3 g6 33.Rc1 Qc1 34.Kh2 Qc3 35.Qe3 Qc7 36.g3 h5 37.Qg5 Kg7 38.Be2 Kf8 39.Qh6 Ke8 40.Qh8 Kd7 41.Qf6 Qd6 (42.Bd3 Qe7+=; 41...Qc2 42.Qf3=). Dusky,John (1935) – McHugh,Edward (2310), 7th Bradley Open, 2002.

5.c4 ab4 6.ab4 Ra1 7.Ba1 dc4 8.Bc4 b5 9.Be2 =+.

5.c4 ab4 6.ab4 Ra1 7.Ba1 Nbd7 8.c5 e5 9.Qa4 Be7 10.f3 (10.d4 Qc7=) 10...0-0 11.d4 ed4 12.Bd4 Re8 13.Nc3 Nf8 14.Bd3 Ng6 (14...Ne6 15.Nge2+=) 15.Bg6 hg6 16.Nge2 Bf5 17.0-0 Bd3 18.Rd1 Ba6 19.Ng3 Bc4 20.Qa7 Qa8 21.Qa1 Qa1 22.Ra1 Rb8 23.e4 de4 24.Nce4 Ne4 25.Ne4 Rd8 26.Bf2 f5+= 27.Ng3 Bf6 28.Re1 Bc3 29.Rc1 Rd3 30.h3 Bb5 31.h4 Bd2 32.Rb1+= Rc3 33.Kh2 Rc4+= 34.Rb2? Bf4?? 35.Kh3+= Bg3 36.Bg3 Kf7 37.Be1 Rc1 38.Bf2 Rh1 39.Kg3 Rd1 40.Kf4 Rd5 41.Kg5 Bf1 42.g3 Bg2 43.Kf4 Rd3 44.Be3 Bf1 45.Rd2 Ke6 46.g4 Rd2 47.Bd2 fg4 48.fg4 Kf7 49.Kg5 Bb5 50.h5 gh5 51.gh5 Bd3 52.Kf4 Ke6 53.Ke3 Ba6 54.Kf4 Bd3 55.Bc3 Be2 56.Kg5 Kf7 57.Be5 Bd1 58.Bd4 ½–½. Baer,Cy (1895) – Silies,Martin (1850), RSS7E easy–64, 2007.

5.c4 dc4 6.Bc4 b5 7.Be2 =+.

5.c4 e6 6.b5 Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 dc4 10.bc6 bc6 11.Bc4 Nb6 12.Be2 Nbd5 13.Qc2 Ba6 14.Ba6 Ra6 15.Nc3 c5 16.Nd5 Qd5 17.Rac1 Rc8 18.h4 (18.d3 Rb6=) 18...h6 19.Ne5 Bf8 (19...Rb8 20.d3=) 20.Nc4 a4 (20...Be7 21.Be5=) 21.Bf6+= gf6 22.f4 f5 23.Rf3 Bg7 24.Rg3 Kh8 25.Rb1 Qe4 (25...Rd8!?=) 26.Qe4+/- fe4 27.Rb7 Rf8 28.Kf2 Bf6 29.Ke2 Kh7 (29...Bh4 30.Rh3 Bf6 31.Rh6 Kg7 32.Rh5+/-) 30.Rc7 (30.Ne5!? Be5 31.fe5+/-) 30...Bh4+= 31.Rg4 (31.Rh3 Bf6+=) 31...Bf6 32.Rc5 Ra7 (32...Rfa8=) 33.Rh5 (33.f5 Rg8 34.Rg8 Kg8 35.fe6 fe6+/-) 33...Rg8?? (better 33...Rc7 34.Nd6 Be7=+) 34.Rg8 (34.Rh6 Kh6 35.Rg8 Be7+/-) 34...Kg8 35.Rh6 Bg7 36.Rh5 1-0. carlos78 (2140) - Porfirios (1925), Rated Blitz game, lichess.org, 2015.

5.c4 Bf5 6.b5 dc4 (6...e6 7.Nc3=) 7.Bc4 e6 8.Nf3 Be7 (8...Bd3 9.Bd3 Qd3 10.Nc3=) 9.Nd4 Be4 (9...Bg6 10.Qa4=) 10.f3 (10.d3 Bd5=) 10...Bd5 11.Be2 (11.Bd5 cd5 12.0-0 0-0=) 11...c5=+ 12.Nc2 b6 (12...Bb3 13.d4=) 13.a4 (13.0-0 0-0=) 13...Nbd7=+ 14.Nca3 Qc7 (14...0-0 15.e4 Bb7 16.Nc4=+) 15.e4 Bb7 16.Nc4 0-0 17.Nba3 Nh5 18.0-0 Bg5 (18...e5 19.Nc2=+) 19.Qe1 (19.d4 cd4 20.Qd4 Bf4=) 19…Nf4 ½–½. Althoff,Guntram – Baumhackel,Mario, Weilburg NBG op, 1995.

5.c4 Bf5 6.Nf3 e6 7.b5 dc4 8.Bc4 Bd3 9.Qb3 Bc4 10.Qc4 cb5 11.Qb5 Qd7 12.Nc3 Be7 (12...Nc6 13.0-0=) 13.Ne5+= Qb5 14.Nb5 Na6 15.Ke2 Rc8 16.Rhc1 0-0 17.Bd4 Nd5 18.Nc4 b6 19.Nb6 (19.Bb6?! Rb8+=) 19...Nb6 20.Bb6 Rb8 21.Rc6 Rb7 (21...Bd8 22.Bd8 Rb5 23.Be7+-) 22.a4 (better is 22.Ba5!? Rb5 23.Ra6+-) 22...Nb4+/– 23.Rc7 Rb6 24.Re7 Rc8 25.Ra7 Nc6 26.Rc7 Rc7 27.Nc7 Rb4 28.Nb5 Ne5 29.Rc1 f6 30.Rc8 Kf7 31.Nc3 g5 32.Rc5 Nc4 33.Rb5 Rb5 34.ab5 Nb6 35.Kd3 e5 36.Kc2 Ke6 37.Kb3 Kd6 38.Na4 Nd7 39.Kc4 e4 40.Kd4 f5 41.f3?? ef3= 42.gf3 h5 ½–½. Grube,Joerg (1790) – Gohla,Ulf (2005), Dortmund9, 2003.

5.Nf3 ab4 6.ab4 Ra1 7.Ba1 Bf5 =.

5.Nf3 b5 =.

5.Nf3 Bg4 6.h3 (6.b5 e6=) 6...Bf3 7.Qf3 Nbd7 8.Be2 (8.b5 e5=) 8...e5 (8...ab4 9.ab4 e5 10.Ra8 Qa8 11.Ba3=+) 9.0-0 (9.b5!?=) 9...ab4=+ 10.ab4 Ra1 11.Ba1 Bd6 (11...Bb4 12.Qg3=+) 12.Qg3 (12.b5 Qc7=) 12...0-0=+ 13.f4 (13.b5!?=+) 13...ef4-/+ 14.ef4 Bb4 15.Bd3 (15.Re1 Re8-/+) 15...Re8 16.Nc3 b5 17.Kh1 Bf8 18.Ne2 b4 19.Bf6 Qf6–+ 20.Qf3 Nc5 21.Ng3 Nd3 22.Qd3 Bd6 23.Ne2 c5 24.Qb5 Qe6 25.Ng1 h6 26.Nf3 Rb8 27.Qa4 Bf4 (28.Re1 Qg6–+) 0–1. Handke,Harald – Handke,Florian (2230), Regensburg op, 1997.

4.ba5 Qa5 5.Nf3 Nf6 6.c4 d5 7.e3 Bc5 8.Be2 Nbd7 9.0-0 Nb6 10.d4 Be7 11.Nbd2 Na4 12.Qb3 dc4 13.Bc4 0-0 14.Bc1 b5 15.Bd3 c5 16.Bb5 Bd7 17.Bd7 Nd7 18.Nc4 Qa6 19.Nb2 Nb2 20.Bb2 Rfb8 21.Qc2 Bf6 22.Rfb1 Rc8 23.dc5 Rc5 24.Qd2 Bb2 25.Rb2 Rac8 26.h3 Nf6 27.Qb4 Qd6 28.Rc2+/– Ne4 29.Rc5 Qc5?? 30.Qc5 Rc5+/– 31.Nd4 h5 32.a4 Ra5 33.Nb3 Ra6 34.a5 g5 35.f3 Nd6 36.Nc5 Rc6 37.a6 Nb5 38.Ne4 Kg7 39.a7 Na7 40.Ra7 Kg6 41.Ra2 f5 Black plans g4 42.Nd2 Rc3 43.Kf2 g4 44.hg4 hg4 45.Ra6 Kf6 46.f4 Rc2 47.Ke2 Ke7 48.Ra7 Kd6 49.Kd3 Rc1 50.Nc4 Kc6 51.Ra6 Kc5 52.Re6 Rc4 53.Rc6 Kc6 54.Kc4 Kd6 55.Kd4 Ke6 56.Kc5 g3 Black threatens to counter with Kc6 57.Kc6 Ke7 58.Kd5 Kf6 59.Kd6 Kf7 60.Ke5 (60...Ke7 61.Kf5+-) 1–0. Bury born and bred – coolerdude, ChessWorld.net, 2004.

4.b5 d5 5.e3 Nf6 6.f4 Ne4 (6...Bd6 7.Nf3=) 7.Nf3 Qb6 (7...f6 8.Bd3=) 8.Nc3 Nc3 9.Bc3 cb5 10.Bd4 Qc7 11.Bb5 Bd7 12.Be5 Bd6 13.Bd7 (13.Bd6!? Qd6 14.Bd3+=) 13...Nd7= 14.Bd6 Qd6 15.0-0 0-0 16.Nd4 Rfc8 (16...Rab8 17.Qe1=) 17.Qe2 (17.Qf3 Rab8=) 17...Qc5 (17...Nf6 18.d3=) 18.Rfb1 b6 (18...Qc7 19.Rb5+=) 19.Rb3 (19.a4 Qc4 20.Qf3 Rab8+=) 19...e5 (19...Qe7 20.Rb5=) 20.Rb5 Qc7 21.fe5 Qe5 22.Rf1 Rab8 23.c3 Nf6 24.a4 Qd6 25.Nf5 Qd7 (better is 25...Qe5!?+/–) 26.Rd5! Qa4 (26...Nd5 Theme: Deflection from g4 27.Qg4) 27.Rd4 Rc4?? (better is 27...Qe8 28.Nd6 Qe6 29.Nc8 Rc8+-) 28.Rc4 (28...Qb3 29.Rg4+-) 1–0. nordlicht – Naunhofer, mySchach.de, 2004.

4.c3 Nf6 5.Nf3 Qb6 (5...d5 6.e3=+) 6.e3 d5 7.Be2 ab4 8.cb4 Be7 9.0-0 0-0 10.d3 (10.Nc3 Nbd7=) 10...c5= 11.Bc3 (11.Nc3 Bd7=+) 11...cb4=+ 12.Bd4 Qc7 (12...Qb5 13.ab4 Ra1 14.Ba1=+) 13.ab4=+ Ra1 14.Ba1 Bb4 15.Be5 Bd6 16.d4 Nbd7 (16...Be5 17.Ne5 (worse 17.de5 Nfd7-/+) 17...Ne4 18.Bd3=+) 17.Bd6= Qd6 18.Nc3 Ne4 19.Ne4 de4 20.Nd2 f5 21.Qb3 Nf6 (21...Nb6 22.f3 ef3 23.Bf3=) 22.Nc4+= Qd5 23.Rb1 Kh8 (23...Qd8 24.Ne5+=) 24.g3 e5? (better 24...Kg8+=) 25.Qa3+- Nd7?? (better 25...Qg8 26.Ne5 Be6+-) 26.Ne5 Re8 (26...Qg8 27.Bc4 Ne5 28.Bg8 Nf3 29.Kg2 Rg8+-) 27.Bc4 Qe5 28.de5 Ne5 29.Bb5 Nf3 (29...Rg8 30.Qd6 Nc6+-) 30.Kg2 Rg8 31.Bc4 Re8 32.Bf7 Rd8 33.Qe7 (33.Qe7 Rg8 34.Bg8 Nh4 35.gh4 f4 36.Qf8 f3 37.Kh1 h5 38.Bf7 Kh7 39.Qg8 Kh6 40.Qh8) 1–0. Pierre – Stept, internet, 2019.

4.e3 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.b5 Qa5 (7...d5 8.Nf3=) 8.Nc3 (8.Bc3 Qd8=) 8...Be7 9.Nf3 0-0 10.Be2 d5 11.Nd4 c5 12.Nb3 Qb6 (12...Qb4 13.f4=) 13.Na4= Qa7 14.Nc3 (14.Bf6 gf6 15.Nc3 c4=) 14...b6 (14...e5 15.0-0=+) 15.d4 (15.f4 Bb7=+) 15...c4=+ 16.Nd2 Bb4 17.0-0? (17.Bb2 Bd7=+) 17...Bd7 (better 17...Qa5!? 18.Bc4 Bc3 19.Bc3 Qc3-+) 18.Qb1 Qa5 19.e4?? (better 19.Qb2 Bb5 20.Nb5 Bd2 21.c3=) 19...Bc3-+ 20.Bc3 Qc3 21.ed5 (21.Rd1 Ne4 22.Ne4 de4-+) 21...Qd2 22.de6 (22.Bc4 Qd4 23.de6 Qc4 24.ed7 Nbd7-+) 22...Be6 23.Bf3 Qd4 24.Rd1 Qc5 25.c3 Bd5 (better 25...Bd7 26.Qb2-+) 26.Be2 (26.Qf5 Rd8-+) 26...Ne4 27.Rd5 (27.Rf1 Nc3 28.Qb2 Ne2 29.Qe2 Qb5-+) 27...Qd5 28.Bf3 Re8 29.Qc2 (29.h3 Qd3 30.Be4 Qb1 31.Bb1 Re1 32.Kh2 Rb1-+) 29...Qd3 (29...Nd2 30.Qc1 (30.Bd5?? Re1) 30...Qg5 31.Qd2 Qd2 32.g4 Qc1 33.Kg2 Re1 34.Be2 Re2 35.Kg3 Qg1 36.Kh3 Qf2 37.g5 Qf3 38.Kh4 Rh2) 30.Be4 Qe4 (30...Qe4 31.Qe4 Re4-+) 0–1. AhmedSultanov (1900) – niko1960 (1815), lichess.org, 2020.

4.e3 Nf6 5.b5 d5 6.Nf3 c5 7.a4 b6 8.c4 Bb7 9.Be2 Nbd7 10.0-0 Be7 11.d3 0-0 12.Nbd2 Qc7 13.e4 (better is 13.Qc2!?=) 13...de4-/+ 14.de4 Ne4 15.Ne4 Be4 16.Nd2 Bb7 17.Bf3 Bf3 18.Qf3 Bf6 19.Bf6 Nf6 (worse is 19...gf6 20.Rad1=) 20.Ne4 Ne4 21.Qe4 Rad8 22.Rfd1 Rd1 23.Rd1 Rd8 24.Qe2 Kf8 25.g3 Ke7 26.Kf1 Rd1 27.Qd1 Qd6 28.Qd6 (28.Qf3!?-/+) 28...Kd6-+ 29.Ke2 Ke5 30.Ke3 g5 31.h3 h5 32.f3 f6 33.Kd3 h4 34.g4 (34.gh4 gh4 35.Ke3-+) 34...Kf4 35.Ke2 Kg3 (35...Kg3 36.Ke3 f5-+) 0–1. Hal1958 – Pawnstorm, playchess.de, 2005.

4.e4 Nf6 5.e5 Ng8 6.b5 d5 7.Nf3 a4 8.Nc3 d4 9.Ne4 c5 10.Bc4 Nd7 11.c3 Nb6 12.Ba2 d3 13.0-0 c4 14.Nfg5 h6 15.Nf7 Kf7 16.Qf3 Ke8 17.Rab1 Qc7 18.Qg3 Qf7 19.Qe3 Qc7 20.Qd4 Bd7 21.Nd6 Bd6 22.ed6 Qd8 23.Bc1 Rc8 24.Qg7 Qf6 25.Qg4 e5 26.Qe4 Bc6 27.bc6 1–0. marus1 – qsc, internet, 2001.

5.ba5!? d5 6.cd5 ed5 7.Nf3 =+.

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

5.e3 ab4=+ 6.Nf3 d5 7.cd5 (7.Ne5 dc4 8.Bc4 ba3 9.Na3 b5-/+) 7...ed5-/+ 8.Bd3 ba3 9.Na3 Be7 (9...Bg4 10.0-0-/+) 10.0-0 0-0 11.Nc2 (11.Qc2 Nbd7-/+) 11...Ra1 12.Qa1 Ne8 (12...Re8 13.Rb1-/+) 13.Ncd4 g6 (13...b5 14.Rc1 Bb7 15.Bf5=+) 14.Rc1 Qd6 15.Nb5 Qd8 (15...Qd7 16.Nbd4=+) 16.Nbd4 f5 17.Ne5 Nd6 (17...Bf6 18.f4=) 18.Qa7 =. Wolfelschneider,Peter – Houthuijzen, corr SOK, 1996.

4.ba5 Qa5 5.e3 d5 6.Bc3 Qa7 7.Nf3 Bf5 8.d3 e6 Increasing the pressure on the isolated pawn on a3 9.Nbd2 Ba3 10.Bb2 Qc5 11.Nb3 (11.d4 Qe7=+) 11...Qe7 (11...Bb4 12.Nbd2 Ra1 13.Ba1-/+) 12.Nfd4 Bg4 13.Be2 (13.f3 Bh5=+) 13...Be2 14.Qe2 0-0 15.0-0 Nbd7 16.Bc3 Bb4 17.Bb2 Bd6 18.e4 Be5 19.f4 Bd4 20.Bd4 c5 21.Bb2 d4 22.e5 (22.c3!? dc3 23.Bc3-/+) 22...Nd5-+ 23.Nd2 (23.Qe4 Rfb8-+) 23...Ne3 (23...Ra1!? 24.Ba1 Ra8 25.Qf3-+) 24.Rfc1 Ra1 Black gets the initiative 25.Ba1 f6 26.ef6 Qf6 27.g3 e5 28.fe5 Ne5 29.Ne4 Nf3 30.Kh1 Qc6 31.Rf1 (31.c3 Ng5 32.cd4 Ne4 33.de4 Qe4 34.Kg1 cd4 35.Qa2 Nd5-+) 31...Ne5 (better 31...Nf1 32.Qf1 Qh6-+) 32.Rf8 Kf8 33.Qf2 (33.Bc3 Qb5 34.Be1 b6-+) 33...Kg8 34.Bb2 h6 (34...Qa4 35.Nc5 Qc6 36.Ne4-+) 35.Bc1 N5g4 The mate threat is Nxf2. Black is in command 36.Qf4 (36.Qe2 c4 37.Be3 Ne3-+) 36...b6 37.h3 Nf6?? (37...Qb5 38.hg4 Qb1 (38...Nc2 39.Qb8 Kh7 40.Qb7 Qd3 41.Nf6 Kg6 42.Nh5 Qf1 43.Kh2 Qf2 44.Kh3 Qf1 45.Kh4+-) 39.Nf6 gf6 40.Qb8 Kf7 41.Qb7 Kg6 42.Qe4 f5 43.Qe6 Kg7 44.Qe7 Kg8 45.Qe8 Kh7 46.Qe7 Kh8 47.Qe5 Kh7 48.Qe7 Kg6 49.Qe6 Kg7 50.Qe7 Kg6 51.Qe6=) 38.Be3= de3 39.Qe3 Ne4 40.de4 Qe6 41.Kh2 Qc4 42.c3 b5 43.e5 b4 44.cb4 cb4 45.e6 Kf8 46.e7?? (better 46.Qf2 Ke7 47.Qf7 Kd6 48.Qd7 Ke5 49.Qg7 Kd5 50.Qd7 Ke5 51.Qd2 Ke6 52.Qh6 Kd5 53.Qg5 Ke4 54.Qf4 Kd3 55.Qf1 Kc3 56.Qc1 Kb3 57.Qb1 Ka3 58.g4=) 46...Ke8-+ 47.g4 (47.Qe5!? Qc2 48.Kh1-+) 47...b3 48.Kg3 (48.Qe5 Qc2 49.Kg3 Qd3 50.Kg2 Qd2 51.Kg3 b2 52.Qg7 Qd6 53.Kg2 Qc6 54.Kg3 Qc7 55.Kg2 Qb7 56.Kf2 Qa7 57.Kg2 Qa8 58.Kf2 Qa7 59.Kg2 Qa8 60.Kf2 Qa7=) 48...Qc2?? (48...b2 49.Qf2 Qc7 50.Kg2 Qb7 51.Kg3 Qb8 52.Kh4 Ke7 53.Qe1 Kf7 54.Qf1 Kg8-+) 49.Qe6? (49.Qe6 Qc3 50.Kg2 Qd2 51.Kf3-+; better 49.Qd4 Qc7 50.Kg2 Qb7 51.Kg1=+). diotarolo (2040) - 147a (1970), Rated Bullet game, lichess.org, 2014.

4.ba5 Ra5 5.Bf6 ef6 6.Nf3 d5 7.e3 Nd7 8.c4 Nb6 9.cd5 Nd5 10.Be2 Bg4 11.0-0 Bd6 12.d4 Qc7 13.h3 Bf5 14.Bd3 Be6 15.Qc1 Qe7 16.Qc2 Qd8 17.Bh7? (Better is 17.Be4!?=) 17...g6-/+ 18.Bg6 fg6 19.Qg6 Bf7 20.Qf5 Qd7 21.Qd7 Kd7 22.Nfd2 Be7 23.Rc1 Nb6 24.Rc3 Kc8 25.Ne4 f5 26.Ned2 Rg8 27.Rd3 Be6 28.f3 f4 29.ef4 Nd5 30.Nc4 Ra6 31.f5 Bf5 32.Rd1 Bh3 33.g4 Ra7 34.Ne5 Bg5 35.Nc4 Rd8 36.Kh2 Rh8 37.Kg3 (37.Nbd2 Bf4 38.Kg1-+) 37...Bh4 38.Kh2 Bf2 39.Nd6 Kb8 (40.Nf7 Rh4 41.Ng5 Bf1 42.Nh3 Rh3#) 0–1. GLChess207e – Gromit300, computer chess game, 2000.

4.ba5 d5 5.e3 Qa5 6.Nf3 Bg4 7.Be2 Nbd7 8.0-0 e5 (8...Bf3 9.Bf3 e5 10.Be2=) 9.d3 (better is 9.Ne5 Be2 10.Qe2 Ne5 11.Be5+/–) 9...Bd6+= 10.Nbd2 0-0 11.h3 Bh5 12.Nh4 Be2 13.Qe2 Rae8 (13...Qa4 14.Ndf3+=) 14.c4 Bb8 15.cd5 cd5 16.Nf5 e4 17.de4 Qc7 (17...de4!? 18.Nd4 Qe5=) 18.Ng3 de4 19.Rfc1 Qa5 20.Bc3 Qg5 21.Qe1 (better is 21.Bb4!? Bg3 A) 22.Bf8?! Be5 (worse is 22...Nf8 23.fg3 Qg3 24.Rab1+/–) 23.Bb4 Ba1 24.Ra1 Rc8=; B) 22.fg3 Qg3 23.Bf8 Rf8 24.Rc4+=) 21...Ne5 (better is 21...Bg3!? 22.fg3 Rc8+=) 22.Nde4 (22.Nde4 Ne4 23.Ne4 Nf3 24.Kh1 Re4 25.gf3+=) 1–0. Fournier,Frederic (1800) – torp2 (2010), Active, 2007.

4.ba5 d6 5.e3 e5 6.Bc3 Be7 7.Be2 Ne4 8.Qc1 (8.Nf3 Nc3 9.Nc3 Qa5=+) 8...0-0 9.Qb2 Nd7 10.Nf3 (10.Bb4 c5 11.f3 Nef6=+) 10...Nc3-/+ 11.Nc3 Qa5 12.0-0 Nc5 (12...d5 13.a4-/+) 13.d4=+ ed4 14.ed4 Bf6 15.Qb4 Bf5 16.Rfc1 (16.dc5 Qb4 17.ab4 Ra1 18.Ra1 Bc3=+) 16...Rfe8 17.Bf1 (17.Bc4 b5 18.Qa5 Ra5-+) 17...Qb4 18.ab4 Ne6 (18...Ra1 19.Ra1 Ne6 20.Re1 Bc2 21.b5-+) 19.Ne2 (19.Ra8!? Ra8 20.Ne2-/+) 19...Ra1-+ 20.Ra1 Bc2 21.Ra7 b5 22.Ra6 (22.d5 cd5 23.Rb7 Bd3-+) 22...Be4 23.Nd2 Bd5 24.Nc3 Nc7 (24...Nd4?! 25.Nd5 cd5 26.Rb6-/+) 25.Ra7 (25.Rb6 Bd4 26.Nd5 Bb6 (26...Nd5?! 27.Rc6 Be5 28.Nf3-/+; 26...cd5?! 27.Rc6 Ne6 28.Nf3=+) 27.Nb6 Na6-+) 25...Bd4 26.Rc7 (26.Nd5 Nd5 27.Rd7 Nb4 28.Rd6 Bf6-+) 26...Bc3 27.Nb1 (27.Nf3 Ra8 28.h3-+) 27...Bb4 28.h4 (28.Ra7 h5 29.Na3 Ba3 30.Ra3 Re1-+) 28...Be4 29.f3 (29.Rb7 c5 30.Ra7 Bb1 31.Bb5 Re1 32.Kh2 Kf8-+) 29...Bb1 30.Rc6 Bc5 31.Kh2 b4 32.Bc4 Bc2 33.Rc7 Rf8 (33...Rb8!? 34.Bf7 Kh8 35.h5-+) 34.g4 h6 35.g5 (35.Rb7 Kh7-+) 35...Bd4 (35...Kh7 36.gh6 Kh6 37.Rb7-+) 36.Kg2 (36.Rb7 Bc3-+) 36...Be5 (better 36...b3 37.g6-+) 37.Kf2 (37.Rb7 Bc3-+) 37...b3 (37...d5!? 38.Rb7 dc4 39.Rb4-+) 38.Rb7 b2 39.Ba2 Bd4 40.Kg3 (40.Ke2 Ra8 41.Kd2-+) 40...Be5 (better 40...hg5!? 41.hg5 Bg6 42.Kh4-+) 41.f4?? (41.Kf2 Kh7 42.f4 Bd4 43.Kf3-+) 41...Bd4-+ 42.h5 hg5 43.fg5 Kh7 44.Kg4 (44.Rb4 Ra8 45.Bf7 b1Q 46.Rb1 Bb1-+) 44…f6 0-1. zembelek (2115) - tarn (1970), Rated Blitz game, lichess.org, 2013.

4.b5 d6 =.

4.b5 e6 5.e3 cb5 6.Bb5 Be7 7.c4 0-0 8.Nf3 d5 9.cd5 ed5 10.0-0 Bg4 11.d3 Nc6 12.Nbd2 Na7 13.Ba4 b5 14.Bc2 b4 15.h3 Bh5 16.Ba4 Nd7 17.Bd7 Qd7 18.ab4 Bb4 19.Ne5 Qf5 20.g4 f6 21.Nef3 Bg4 22.hg4 Qg4 23.Kh1 Rac8 24.Ba3 Bd2 25.Nd2 Qh4 26.Kg2 Qg5 27.Kh3 Qh6 28.Kg3 Rf7 29.Rh1 Qg6 30.Qg4 Qd3 31.Qe6 h6 32.Rhc1 Rd8 33.Bb2 Nb5 34.Ra5 Nd6 35.Rd5 Ne4 36.Ne4 Qd5 37.Qd5 Rd5 38.Rc8 Kh7 39.Kf3 Rf5 40.Kg2 Kg6 41.Bd4 Rb5 42.Kg3 Rb1 43.Nc3 Rg1 44.Kf3 Rd7 45.Ne2 Rd1 46.Rf8 Kh7 47.Nf4 Rc1 48.Re8 Rb7 49.e4 Rh1 50.Kg2 Rd1 51.Rd8 Rc1 52.f3 Rcc7 53.Nd5 Rc4 54.Ne3 Rcc7 55.Rd5 Kg6 56.Nf5 Rd7 57.Nd6 Rb3 58.Bf2 h5 59.Kg3 Ra3 60.Bd4 Rd3 61.Kf4 Ra3 62.Bb6 Ra6 63.Nc8 Rb7 64.Ba5 Rc6 65.Nd6 Ra7 66.Nf5 Kf7 67.Nd4 Rc1 68.Bb6 Rb7 69.Bc5 Rc7 70.Ba3 Rd1 ½–½. Taulien,Hans_Juergen (2225) – Riemer,Wolfgang (2310), RSX8D – priv – XMAS, 2004.

4.Nc3 ab4 5.ab4 Ra1 6.Ba1 (6.Qa1 b5=+) 6...e6 (6...e5 7.b5-/+) 7.e4 (7.b5 d5=) 7...d5 (7...Bb4 8.e5 Nd5 9.Nd5 ed5 10.Nf3=+) 8.e5 Nfd7 9.d4? (better 9.Na2=+) 9...Bb4-+ 10.f4? (10.Bb2 Qa5 11.Qa1 Qa1 12.Ba1-+) 10...Qa5 11.Nge2 c5 12.Kf2 cd4 13.Nd5 (13.Qd4?? Bc5 14.Bb2 Nc6 15.Qc5 Qc5 16.Ke1 Qb4-+) 13...Qd5 14.Qd4 (14.Nd4 Nc5 15.Bd3-+) 14…Bc5 0–1. chessgeneral1 (1695) – hiblit (1860), gameknot.com, 2018.

4.c4 b5 5.cb5 ab4 (5...cb5 6.e3=) 6.ab4 (6.e3 Bb7=) 6...Ra1 7.Ba1 cb5 8.e3 e6 9.Bb5 Bb4 (9...Bb7 10.Nf3=) 10.Qa4 (10.Qf3 Bd6+=) 10...Qa5 (10...Be7 11.Nf3=) 11.Qa5 Ba5 12.Bf6 (12.Nf3 Ke7=) 12...gf6 13.Ne2 Bb7 (13...Rg8 14.Ng3=) 14.f3 Ke7 (14...Na6 15.Nbc3=) 15.Kf2 Nc6 (15...Rc8 16.d4=) 16.Nbc3 h5 (16...Rc8 17.Ra1 Bc7 18.g3+=) 17.Ra1 Bc7 18.h4 Rg8 19.Ne4 f5 20.N4g3 Rh8 21.Ra4 (21.d4 f6+=) 21...Kf6 (21...Kd6 22.Nf4+=) 22.Nf4 Attacking the isolated pawn on h5 (22.d4 d5+=) 22...Bf4 23.Rf4 Ne5 (23...d6 24.Rc4 Na7 25.Bd7+/–) 24.Ra4 (24.Rb4 d5+=) 24...Bc6 25.Bc6 Nc6 26.d4 Ne7 (26...d5 27.Ra6 Ne7 28.Ke2+=) 27.Ne2 (27.Ra7 d6+=). Mroz,Antoni – Baranowski,Adam, corr Tch8–Poland, 1989.

4.c4 d6 5.f4 (5.e3 ab4 6.ab4 Ra1 7.Ba1 e5=) 5...b5 (5...e5 6.fe5 de5 7.Be5 ab4 8.ab4 Ra1 9.Ba1 Bb4 10.Qb3=+) 6.cb5= cb5 (6...ab4 7.Nf3=) 7.e3 Bd7 8.Nf3 (8.Nc3 Qb6=) 8...ab4 9.ab4 Ra1 10.Ba1 e6 11.Nc3 The isolani on b5 becomes a target (11.Bc3 Na6=) 11...d5 12.Nb5 (12.Ne5 Bb4 13.Nd7 Nbd7 (13...Qd7? 14.Bb5 Nc6 15.Qa4+-; < 13...Kd7 14.Bb5 Ke7 15.Qb3+=) 14.Bb5 0-0=) 12...Bb4 13.Qa4 (13.Bd3 Na6=) 13...Qa5 (13...Nc6 14.Bd3=) 14.Qa5 ½–½. Sundin,Tommy – Johansson,Kent, Norrkoeping Sweden, 1988.

4.e3 b5 5.ba5 (5.a4 ab4 6.ab5 Ra1 7.Ba1 d5=) 5...Qa5 6.c4 bc4 7.Bc4 d5 8.Be2 Nbd7 9.Nf3 e6 10.0-0 (10.Qc2 c5=) 10...Bd6 11.Qc2 Bb7 12.d4 0-0 13.Nbd2 (13.Bc3 Qa4 14.Qa4 Ra4=) 13...Rfb8 (13...Ba6 14.Ba6 Ra6 15.a4=) 14.a4 (14.Rfb1 Ba6 15.Ba6 Ra6=) 14...Ba6 15.Bc3 (15.Ba6 Ra6 16.Ba3 Bb4=) 15...Qc7 (15...Qd8 16.Ba6 Ra6 17.Rfb1=) 16.Ba6= Ra6 17.Rfc1 Ng4 Will h2 fall? 18.h3 Ngf6 19.a5 Qa7 20.Rab1 Rb1 21.Rb1 Qa8 22.Qb2 Ra7 (22...Bc7 23.Nb3=) 23.Ra1 Rb7 24.Qc2 Qa6 25.Rb1 Rb1 26.Qb1 Bc7 27.Qb4 h6 28.Qa3 Kh7 29.Qe7 (29.Qa1 Bd6=) 29...Qd3 30.Qb4 Qa6 31.Qe7 Qd3 32.Qb4 Qa6 33.Qe7 (33.Qb2 Qa7= (33...Ba5? 34.Qa3+-)) ½–½. Boehnke,Hartmut – Rosner,Dirk, VM2002–VR–Gr03, 2002.

4.e3 Qb6 5.Bd4 Qc7 6.Nf3 d6 7.Bf6 ef6 8.b5 Bg4 9.h3 Bh5 10.bc6 Nc6 11.g4 Bg6 12.Bb5 Kd7 13.Nc3 Ke6 14.e4 1–0. marus1 – BobbyPeru, internet, 2001.

4.e3 d5 5.b5 g6 6.a4 Bg7 7.f4 0-0 8.Nf3 c5 9.Be2 b6 10.0-0 Bb7 11.c4 Nbd7 12.Na3 e6 13.Qb3 Rc8 14.Rac1 Qe7 15.Ne5 Ne5 16.Be5 Ne4 17.Bg7 Kg7 18.Bf3 Nf6 19.Qb2 Rfd8 20.cd5 ed5 21.Rfe1 Kg8 22.d3 Re8 23.Nb1 Qd6 24.Nd2 Re7 25.h3 Rce8 26.Nf1 Bc8 27.Qd2 h5 28.e4 de4 29.de4 Qd2 (29...Ne4? 30.Re4 Qd2 31.Nd2 Re4 32.Ne4+-) 30.Nd2 Be6 (30...Nd5 31.Nc4 Nf4 32.Nb6=) 31.e5 Nd5 32.Ne4 Nf4 33.Nf6 Kg7 34.Ne8 Re8 35.Red1 (35.Rcd1!?+=) 35...Bb3= 36.Rd6 Re6 37.Rc3 Ba4 38.Rc4 Bb5 (better 38...Nh3!? 39.gh3 Bb5 40.Re6 fe6+/-) 39.Rf4+- Re5 (39...Rd6 40.ed6 f5 41.Bd5+-) 40.Rb6 Bd7 41.Rb7 Be6 42.Rb5 Re1 43.Kf2 Ra1 44.Rc5 a4 45.Ra5 a3 46.Bd5 Bf5 (46...Bd5 47.Rd5 Ra2 48.Kf3+-) 47.Rfa4 Rd1 (47...Be6 48.Be6 fe6 49.Ra3 Ra3 50.Ra3+-) 48.Ra3 Rd2 (48...f6 49.Bf3 Rd2 50.Ke3+-) 49.Kg3 (49.Ke3 Rd1+-) 49...g5 (49...Rd4 50.Kf3+-) 50.Bf3 h4 51.Kh2 Bg6 (51...Kf6 52.Re3+-) 52.Rg5 Kh6 (52...Rd4 53.Rga5 Bc2 54.Rd5+-) 53.Rg4 Rd6 54.Rh4 Kg7 55.Rg4 Rd2 56.Ra6 Kh7 (56...Rd7 57.h4 Kh7 58.h5+-) 57.Be4 1-0. kreatif86_Mdn (2365) - Arifars17 (2410), Tarigan Catur Seri, lichess.org, 2021.

4.e3 d6 5.Nf3 (5.b5 e5=) 5...e5 6.b5 a4 (6...e4 7.Nd4=) 7.Nc3 (7.bc6 bc6 8.Nc3 Be7=) 7...Bd7 (7...e4 8.Ng1=) 8.e4 (8.bc6 bc6 9.Rb1 Be7=) 8...Qa5 (8...cb5 9.Qe2=) 9.Be2 (9.Rb1 Be7=) 9...cb5 10.0-0 (10.Rb1 Bc6=) 10...Bc6=+ 11.d4 Ne4 (better is 11...b4!? 12.ab4 Qb4=+) 12.Ne4+= Be4 13.de5 d5 14.e6 fe6 15.Ng5 Nd7 16.Bh5 (better is 16.Ne6 Qb6 17.Bh5 (17.Bg7 Rg8-/+) 17...Ke7 18.Ng5+/– (18.Bg7? Rg8-+; 18.Ng7?! Nf6 19.Bd4 Qd6=)) 16...Bg6? (better is 16...Ke7+=) 17.Ne6+- Qb6?? (better is 17...Nf6 18.Re1 Be7 19.Ng7 Kf7+-) 18.Re1 (18.Bg7?! Bg7 19.Bg6 hg6 20.Ng7 Kf8 21.Qd5 Nf6 22.Ne6 Kg8+-; 18.Ng7?! Bg7 19.Bg7 Rg8+/–; 18.Qd5?! Nf6 19.Bf6 gf6+-) 18...Be7 19.Bg6 (19.Ng7 Kf8 20.Qf3 Nf6 21.Bg6 hg6 22.Ne6 Kg8 23.Bf6 Rf8 24.Nf8 Qf6 25.Ng6 Qg6 26.Re7 Rh7 27.Qd5 Rf7+-) 19...hg6 20.Ng7 Kf7 (20...Kf8 21.Ne6 Kg8+-) 21.Qd5 Kf8 22.Ne6 Kf7 23.Nc5 +-. orane – laksmann4, caissa.com, 2006.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5 =.

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

5.e3 e6 6.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 a5 6.b5).

5.e3 Bf5 6.Nf3 e6 7.Be2 Bd6 8.0-0 (8.Nc3 0-0 9.Rb1 Nbd7 10.Nd4 Qc7 11.f4 Bg6 12.bc6 bc6) 8...0-0 9.Nh4 (9.Nd4 Bg6 10.f4 c5 11.Nf3 Nbd7 12.Nh4 c4) 9...Nbd7 (9...Be4 10.d3 (10.f3 Bg6 11.Ng6 hg6 12.Nc3 Qc7) 10...Nfd7 (10...Bg6 11.Nc3 Qc7 12.g3 Nbd7) 11.g3= (11.de4 Qh4 12.g3 Qe7) 11...Bg6 12.c4 Nb6) 10.Nf5 ef5 11.g3 (11.Nc3 Re8= (11...Nc5 12.Rb1 Rb8) 12.f4 Nc5) 11...g6 (11...Qe7 12.d4= (12.Nc3 Nc5) 12...Nb6; 11...Nc5 12.Nc3 Qd7) 12.bc6 (12.d4 Qb6) 12...bc6 13.c4 Rb8 14.Ra2 dc4 15.Bc4 Re8 16.Qc2 Ng4 17.Be2 Nc5 18.Bf3 Qe7 19.h3 Nf6 20.d3 Nd5 21.Nd2 Bg3 22.fg3 Ne3 23.Qc3 Rb2 24.Qb2 Qg5 25.Kh2+/– f4 26.Rg1 fg3 27.Rg3 Qf4 28.Qb6 Nf5+= 29.Nf1 Ng3 30.Ng3= Re3 31.Qc5 Rf3 32.Rg2 h5 33.Qc4 Qd6 34.Qh4 Rf4-/+ 35.Qh5 gh5 36.Ne4? Qg6!-+ 0–1. Hoch,Hubertus (2325) – Nogler,Schimun (2420), RSLE, 2010.

5.Qc2 g6 6.Nf3 Bg7 7.d3 0-0 8.Nbd2 Nbd7 9.e4 e5 10.g3 (10.Be2 Qe7=) 10...ab4 11.cb4 d4 12.Bg2 Re8 13.0-0 Qe7 14.Nc4 b5 15.Na5 c5 16.Rfc1 Bh6 17.Rcb1 Ba6 18.Bc1 Bc1 19.Qc1 Kg7 20.Nh4 h6 21.Qd2 Rac8 22.Bh3 c4 23.dc4 Ne4 24.Qe1 Nc3 25.c5 Nb1 26.Rb1 Rc7 27.Rd1 Nf6 28.Bg2 Rf8 29.Qe2? Qe6-/+ 30.Re1 Re8 31.Nf3 Rce7 32.Qd2 Qd7 33.Rc1 Ne4 34.Qd3 Nc3 35.c6 Qc7 36.Nd4+= Na2 37.Ra1 ed4 38.Ra2 Re1 39.Bf1 Qe5 40.Rd2 Bc8 41.Kg2 Bf5 42.Qd4 Rf1 43.g4 Bg4! 44.Qg4 Qe1 45.Qd4 ½–½. Habibi,Al (2300) – Gorse,G (2070), 29th Liechtenstein Open, 2011. (=1.a3 Nf6 2.b4 c6 3.Bb2 a5)

5.d4 Nbd7 6.Nf3 b5 7.e3 Nb6 8.Nbd2 Na4 9.Qc2 Nb2 10.Qb2 ab4 11.ab4 Ra1 12.Qa1 Nd7 13.Be2 f6 14.e4 e6 15.0-0 Bd6 16.h3 0-0 17.Bd3 Bb8 18.Re1 h6 19.Nh2 (19.ed5 ed5 20.Nb3 Bd6+=) 19...Qc7 20.Ndf3 de4 21.Re4 e5 22.Qa2 Kh8 23.de5 (23.Nh4 Rd8 24.Ng6 Kh7+/–) 23...fe5 (23...Ne5!? 24.Be2 Bf5+=) 24.Qe2 (24.Ng4 Qd8+=) 24...Re8 25.Nh4 (better is 25.Ng4!?+=) 25...Nf6+= 26.N2f3 Kg8 27.Re3 Nd5 28.Bg6 Re6 29.Bf5 Ne3 (29...Re7 30.Qa2+=) 30.Be6 Be6 31.Qe3 Bd5 32.g3 (32.Ng6 e4+=) 32...Ba7 (better is 32...Qd7+=) 33.Qd2?? (better is 33.Qe5!? Qd7 34.Kg2+=) 33...Qe7 (33...g5 34.Nf5 Bf3 35.Nh6 Kf8 36.Qg5-/+) 34.Qe2 (34.Qe1 g5 35.Ng6 Qe6 36.Nfe5 Qh3 37.Ne7 Kg7 38.Nd5 Qg3 (worse is 38...cd5 39.Nc6 Qg3 40.Kf1 Qh3 41.Kg1 Qg4 42.Kh2 Qf4 43.Kg2+=) 39.Kf1 Qh3 40.Kg1 cd5-/+) 34...e4 35.Nd4 (35.Ng6!? Qf6 36.Nfe5-/+) 35...Bd4-+ 36.cd4 Qb4 37.Qe3 Qb3 38.Qf4?? (better is 38.Qb3 Bb3 39.Kf1-+) 38...Qb1 39.Kh2 e3! 40.f3 e2 41.Nf5 e1Q 42.Nh6 gh6 43.Qg4 Kh8 44.Qc8 Bg8 0–1. Sapareva,Magdalena (1710) – Artunov,Kirkor, 3rd Bulgaria, Memorial Hristo Gerenski, 2010.

5.Nf3 Bf5 6.e3 Nbd7 7.Be2 a4 (7...e5!?+=) 8.0-0= b5 9.Re1 Qc7 10.d3 h6 11.Nbd2 e5 12.c4 e4? (better is 12...bc4!? 13.dc4 Bd6+=) 13.de4+- de4 14.Nd4 Bg4?? (better is 14...Bg6+-) 15.Bg4 h5 (15...Ne5 16.Be2 Nc4 17.Bc4 bc4 18.Nc4+-) 16.Bh3 (better is 16.Bd7 Qd7 17.Qc2 Be7+-) 16...g6 (16...Ng4 17.Qc2 Qh2 18.Kf1+-) 17.Qe2 (better is 17.Nc6 Rh7 18.cb5 Ng4 19.Ne4 Qh2 20.Kf1 Be7+-) 17...c5 (17...Bd6 18.Bd7 Nd7 19.Nb5 cb5 20.Bh8 Bh2 21.Kh1 Be5 22.Be5 Ne5 23.cb5 f5+-) 18.Nb5 Qb6 19.Rad1 Bg7 (19...Rh7 20.Ne4! Ne4 21.Bd7 Ke7 22.Qf3+-) 20.Bd7 Kd7 (20...Nd7 21.Bg7 Rh7 22.Bc3+-) 21.Ne4 Kc8 (21...Ke7 22.Rd6 Qd6 23.Ned6 cb4 24.Qd2+-) 22.Ned6 Kd7 23.Nf7 (better is 23.Nf5! Ke8 24.Rd6 Qb8 25.Ng7 Kf8+-) 23...Ke7 24.Rd6 Qb8 25.Qf3 Kf7 26.Bf6 Rf8 27.Be5 (27.Qd5 Ke8 28.Qe6) 27...Kg8+- 28.Qd5 Kh8 29.Bg7 Kg7 30.Qc5 Rc8 (30...Rf5 31.Rd7 Kh6+-) 31.Qe5 Kh6 (31...Kh7 32.Rd7 Kh6 33.Qg7 Kg5 34.Rd5 Qe5 35.Re5 Kh4 36.Qf6 Kg4 37.Re4) 32.Qf4 Kh7 33.Rd7 Kh8 (33...Kg8 34.Qf7 Kh8 35.Qg7) 34.Qf6 Kg8 35.Qg7 1–0. pieeater – BLUEMOONIE, ChessWorld.net, 2013.

5.ab4 Ra1 6.Ba1 Qb6 7.Qa4 Na6 8.b5 Ne4 (8...cb5 9.cb5 Nc5 10.Qa8=) 9.e3= Nec5 10.Qa3 f6 (better 10...e5!? 11.Be5 Nb4=) 11.d4+- Ne6 12.c5 Nec5 13.dc5 Nc5 14.Qa8 Qc7 15.Nd2 e5 16.Ngf3 Be7 17.bc6 bc6 18.Be2 0-0 19.Qa2 d5 20.0-0 Be6 21.Rc1 Qd7 22.Qa5 Nb7 (22...Qb7 23.Rb1 (worse 23.Rc5 Ra8=+) 23...Qa8 24.Bc3+=) 23.Qb6+- Nd8 (better 23...Ra8!?+-) 24.Nb3+- Qe8 25.Nc5 Bg4 26.h3 Bc8 27.Na6 Qf7 28.Bc3 Ba3 29.Ra1 Bd6 30.Bb4 Bb4 31.Nb4 Qb7 32.Qb7 Bb7 (32...Nb7? 33.Nc6 Be6 34.Ra7+-) 33.Ba6 Rf7 34.Bb7 Rb7 35.Ra8 Rb4 36.Rd8 Kf7 37.Rd7 Kg6 (37...Kg8 38.g4+-) 38.Rd6+- Rb1 (38...Kf5 39.Rc6 h5 40.Kf1+-) 39.Kh2 Rc1?? (39...Kf7 40.Rc6 Rb2 41.Rc7 Kf8+-) 40.Ne5 Kf5 41.Nc6 Rc5 (41...Ke4 42.Nb4+-) 42.Nd4 Kg6 43.Rb6 (43.Rd7 h5+-) 43...h5 44.Rb5 (44.Rb7 Rc4+-) 44...Rc1 (44...Rb5 45.Nb5 Kf5+-) 45.Rd5 Kh6 (45...Ra1 46.Rd7+-) 46.Nf5 Kg6 47.Ng3 1–0. Wang,Ting_Hao (1805) – Gao,Ninglin, Maidenhair Tree Asian Am, 2019. (=1.a3 Nf6 2.b4 c6 3.Bb2 a5)

5.ab4 Ra1 6.Ba1 e6 7.Qb3 Qb6 8.c5? (better is 8.b5=) 8...Bc5!-+ 9.Nh3 (9.bc5 Qa5) 9...Qb4 10.Qd3 Qb5 (10...d5 11.e3-+) 11.Qc2 (11.Qb5 cb5 12.Bf6 gf6-/+) 11...Na6 12.e3 Nb4 13.Qb3 Qa5 14.Bb2 Qa2 15.Qa2 Na2 16.Bc4 Nb4 17.0-0 d5 18.Be2 Bd6 19.Nc3 b5 (19...e5 20.Ng5-+) 20.Ra1 0-0 21.Ng5 Bb7 (21...e5 22.Ba3 Bf5 23.e4 de4 24.Rb1-+) 22.Ra7 Rb8 23.d4 h6 24.Nf3 Ne4 25.Ne5 Be5 26.de5 Ba8 (26...Nc5 27.Ba3 Nbd3 28.Na2-+) 27.Nd1 c5 28.f3 Nd2 29.Bb5 Rb5 30.Ra8 Kh7 31.Nc3 (31.Bc3 Nc4-+) 31...Rb7 32.Na4 (32.Nd1-+) 32...Nd3 33.Nc5 Nc5 (33...Rb2?! 34.Nd3 Rb3 35.Kf2-/+) 34.Bd4 Nd3 35.Ra1 Rc7 36.Rd1 Rc2 37.Bb6 (37.Ba1 Kg6-+) 37...Ne5 38.Kf2 Ndc4 (38...Ndc4 39.Kg3 Nb6-+) 0–1. Diviak,Rudolf (1795) – Pereszlenyi,Gejza (2020), Banska Stiavnica SVK, V4 Open, 2013.

5.c5 ab4 6.ab4 Ra1 7.Ba1 b6 =.

5.cd5 Nd5 6.ba5 Ra5 =.

5.cd5 Nd5 6.e4 =.

5.e3 ab4 6.ab4 Ra1 7.Ba1 dc4 8.Bc4 b5 9.Be2 Na6 10.Qb3 (10.Bc3 e5=+) 10...Qd5 (10...e6 11.Bc3=+) 11.Qc3 e6 (11...Qe4!? 12.d3 Qb4-/+ (< 12...Qg2 13.Bf3 Qg5 14.Qc6 Kd8 15.Bd4+/–)) 12.Bf3= Ne4 13.Qd4 f5 (13...Qd4 14.Bd4 c5 15.Be5=+) 14.Bh5=+ Kd8 (14...Ke7 15.d3 Qd4 16.Bd4-/+) 15.Qb6-/+ Ke7 16.Nf3? (16.Qa7 Qd7 17.Qd7 Kd7 18.Nf3 Nb4 19.Ne5 Kc7 20.Ke2-/+) 16...Rg8?? (better is 16...Qa2 17.0-0 Qa1-+) 17.Qa7 (17.Nc3 Nc3 18.Bc3 g6 19.Qa7 Qd7-+) 17...Qd7+= 18.Ne5 Qa7 19.Nc6 Kd7 20.Na7 Nb4 21.0-0 g6 22.Be2+= Ba6 23.Nb5 Nd5 24.f3 Nd6 25.N1c3 Nb5 26.Bb5 Bb5 27.Nb5 Bb4 28.e4 Nf4 29.Bc3 Bc5= 30.Kh1 Nd3 31.Bd4 Bd4 32.Nd4 Rb8 33.Kg1 Rb4 34.Nc2 Rb2 35.Na3 Rd2 36.Nc4 Rc2 37.Rd1 Rc4 38.Rd3 Ke7 39.ef5 ½–½. Moeller Nielsen – Gross,Gerald, corr 3GMM–44, 1996.

5.e3 dc4 6.Bc4 b5 7.Bb3 +=.

5.e3 Bf5 6.c5 Nbd7 (6...e6 7.Nf3+=) 7.Nf3 Qc7 (7...e6 8.Nc3=) 8.d4 ab4 (8...b6 9.cb6 Qb6 10.Bc3=) 9.ab4 Ra1 10.Ba1 b5 (10...b6 11.Nc3=) 11.Nbd2 (11.Nc3 e6=) 11...Ne4 (11...e6 12.Be2=) 12.Nb3 (12.Ne4 Be4 13.Bd3 Bd3 14.Qd3 Nf6=) 12...g5 (12...e6 13.Nh4=) 13.Bd3+= f6 (13...h6 14.0-0+=) 14.0-0 (14.Ng1 g4 15.f3 gf3 16.gf3 Ng3 17.hg3 Qg3 18.Kf1 Rg8 19.Bf5 Qg2 20.Ke1 Qh1-+) 14...Bg7 (14...e6 15.Bb2+=) 15.Ne1+/– g4 16.f3 gf3 17.Qf3 (better is 17.gf3!? Ng3 18.Rf2 Bd3 19.Qd3+- (19.Nd3?! Nf5=)) 17...Bg6 (17...e6 18.Bb2=) 18.Qe2 0-0 (18...Rg8 19.Nf3=) 19.Nf3 Nb8 (19...e5 20.Be4 Be4 21.Nbd2=) 20.Nh4+= f5 21.Ng6 (21.Be4 fe4 22.Rf8 Bf8 23.Ng6 hg6+=) 21...hg6 22.Be4 fe4 23.Rf8 Kf8 24.Qg4 Kf7 25.Bc3 Nd7 26.Be1 Nf6 27.Qh3 Nh5 28.Na5 e5= 29.g4 Qd7?? 30.Qf1+- Nf6 31.de5 Qg4 32.Kh1 Ke6 33.ef6 Bf6 34.Nc6 d4 35.Nd4 Bd4 36.ed4 e3 37.Qg2 Qf5 38.d5 Kf7 39.Kg1 Kg8 40.d6 Qb1 41.Qe2 (41.Qe2 Qf5 42.c6+-) 1–0. Broza,Antoni – Zarychta,Krzysztof, Poland–chT3 Poland, 2002.

5.Qb3 ab4 6.ab4 Ra1 7.Ba1 Qb6 8.b5 d5 9.Bf6 gf6 10.e3 Nd7 11.Nf3 Nc5 12.Qb2 Be7 13.Nc3 0-0 14.d4 Ne4 15.Ne4 de4 16.c5 Qa5 17.Nd2 b6 18.bc6 (18.cb6!? Qb6 19.Ne4+=) 18...bc5= 19.dc5 (19.Qb5 Qa1 20.Qb1 Qb1 21.Nb1 cd4 22.ed4 Rd8-/+) 19...Rd8+= 20.Bc4 (20.c7!? Rd5 21.Bc4 Rc5 22.0-0-/+) 20...Bc5 21.Ke2 Ba6 22.Rc1? (better is 22.Ba6 Qa6 23.Kd1 Qc6 24.Re1-+) 22...Ba3-+ 23.Qa2 (23.Qc2 Bc1 24.Qc1-+) 23...Qh5 (23...Bc1?? 24.Qa5 Rd2 25.Ke1 Bc4 26.c7+-) 24.f3 Bc1 25.Ba6 (25.Ne4 Qh6 26.f4-+) 25...Rd2 26.Qd2 ef3 27.Kf2 Bd2 28.c7 Be3! (28...Be3 29.Ke3 fg2 30.c8Q Kg7-+) 0–1. Klebanov,Andrej (1815) – Coenen,Michael (2260), GER–ch U25 op, 2009.

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

6.Ba1 b5 =.

6.Ba1 Qb6 7.Bf6 ef6 8.f4 (better is 8.c3!?=) 8...Bb4-/+ 9.c3 Be7 10.Nf3 d5 11.Be2 0-0 12.0-0 Qb2 13.Bd3 c5 14.Qc2 Qc2 15.Bc2 b5 16.d4 Bd7 17.Nbd2 Rc8 18.Bb1 b4 19.Rc1 (better is 19.cb4 c4 20.Rc1-+) 19...cd4 20.Nd4 0–1. blackcrowman – PeterRs, ChessWorld.net, 2012.

6.Ba1 d6 7.Bf6 ef6 8.d4 =.

6.Ba1 e6 7.b5 d5 8.c4 Nbd7 9.Nf3 Bd6 10.Be2 Qc7 11.Nc3 e5 12.bc6 bc6 13.cd5 Nd5 14.Ne4 Be7 15.0-0 0-0 16.d4 N5f6 17.Ng3 ed4 18.Nd4 Rd8 19.Qc2 c5 20.Ngf5 Bf8 21.Nb5 Qc6 22.Na7+/– Qe4 23.Bd3 Qg4 24.f3 Qh5+/– 25.Nc8 Rc8 26.g4 Qh3 27.Rf2 Ng4 28.fg4 Qg4 29.Rg2 Qf3 30.Be4 Qh5 31.Ng7 Bg7 32.Bg7 Nf8 33.Bf8 Kf8 34.Bh7 Rc6 35.Rg8 Ke7 36.Bf5 Rd6 37.Qe4 Kf6 38.Bg4 Qe5 39.Qe5 Ke5 40.Re8 Kd5 41.Kf2 Rb6 42.h4 c4 43.Rc8 Rb4 44.h5 c3 45.Bf3 Ke5 46.Rc3 Kf6 47.Rc6 Kg7 48.Kg3 Rb5 49.h6 Kh7 50.Be4 f5 51.Bc2 Kg8 52.Kf4 (52...Rb8 53.Rc7+-) 1–0. Pandurevic,Miro (2260) – Stubljar,Andrej (2070), 24th Open Bled SLO, 2003.

6.Ba1 e6 7.b5 d5 8.Nf3 Nbd7 =.

6.Ba1 e6 7.b5 Be7 8.Nf3 0-0 9.Be2 cb5 10.Bb5 Qa5 (10...d5 11.Ne5=) 11.Nc3 d6 (11...d5 12.Ne5=) 12.0-0 Bd7 13.Bd7 Nbd7 14.Qb1 b6 15.Nb5 Qa8 16.c4 Qc6 17.d3+= Ra8 18.Rc1 h6 19.Nfd4+= Qb7 20.Ne2 Ng4 21.h3 Nge5 22.Bc3 Ng6 23.Qc2 Nh4 24.e4 d5 25.cd5 ed5 26.Bb2 Nc5 27.Nbc3 de4= 28.de4 Bf6 29.Rb1 Ng6 30.Bc1 Ne7 31.Be3 Qc6 32.Nd4 Qd7 33.Nce2 Rc8 34.f4 Na4 35.Qd2 Ng6 36.e5+= ½–½. Ahrens,Wolfgang – Schilling,Hans, compuServe, 1995.

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

5.c3 d5 6.Nf3 Bd6 7.d4 Nbd7 8.Nbd2 0-0 9.Bd3 Re8 10.0-0 e5 11.de5 Ne5 12.Ne5 Be5 13.Qc2 Bh2?? (better is 13...b5=) 14.Kh2+- Qd6 15.Kg1 Re5 16.c4 Rh5 17.Nf3 Bg4 18.c5 Qc7 19.Be5 Qe7?? (19...Re5 20.Ne5 Combination) 20.Bg3?? (20.Bd6 Qd8 21.Ne5 Qe8 22.Ng4 Ng4+-) 20...Qe6?? 21.Ne5 Re5 22.Be5 Qe5 23.Rfe1 Qg5 24.Be2 Bf5 25.Qd1 Ne4 26.Bf3 h5 27.Kf1 Qh4 28.Be4+= Be4 29.f3 Qh1 30.Kf2 Qh4 31.Ke2 Bg6 32.Qd4 Qg3 33.Qf4?? Qg2 (33...Qg2 34.Kd1 Qc2#) 0–1. Deilitz,Manfred – Wallet,Norbert, Ueckermuende op 6th, 2007.

5.c3 d5 6.e3 Nbd7 7.b5 Bd6 8.c4 0-0 9.d4 Qc7 10.c5+= Be7 11.b6 Qb8 12.a4 Re8 13.Bc3 Bf8 14.Be2 e5 15.Nfd2 ed4 16.ed4 Ne4 17.Ne4 Re4 18.Nd2 Re8 19.Nb3 Nf6 20.0-0 Ne4 21.Ba5 Qf4 22.Bd3 Nf6 23.Bd2+/– Qb8 24.Re1 Bg4 25.Re8 Qe8 26.f3 Bh5 27.a5 Bg6 28.Bg6 hg6 29.Qe1 Qd8 30.Qe2 Ra6 31.Re1 Nh7 32.Bf4 Ra8 33.Bc7 Qd7 34.Qd2 Nf6 35.Qf4 Nh5 36.Qe5 f6 37.Qe6 Qe6 38.Re6 Nf4?? 39.Bf4 (39...Kf7 40.Re3+-) 1–0. touwladder – boa, ChessWorld.net, 2004.

5.c3 d5 6.g3 +=.

5.c3 g6 6.d3 (6.g3 d5=) 6...Bg7 (6...d5 7.Nbd2=) 7.Nbd2 0-0 8.e4 d5 9.Be2 Nbd7 10.0-0 b5 11.Qc2 Nb6 (11...Bb7 12.Nb3=) 12.c4 (12.e5 Nfd7 13.Nd4 Na4 14.Nc6 Qc7 15.Ne7 Kh8 16.Nc8 Be5=) 12...bc4 (12...Bb7 13.Rfe1+=) 13.dc4 Ba6 (13...Bb7 14.ba5 Ra5 15.Rab1+=) 14.Rfd1 (14.ed5 ed5 15.Rfe1 Bc4 16.Bc4 dc4 17.Nc4 ab4=) 14...Qc7 15.Be5 Qc8 (15...Qe7 16.ba5 Nbd7 17.Bc3=) 16.ba5 (16.Ra2 Nc4 17.Bc4 Bc4 18.Nc4 dc4 19.Qc4 ab4 20.Qb4 Qa6=) 16...Nbd7 17.Bd6 Re8 18.e5 (18.Rab1 e5 19.Bf1 Re6+=) 18...Ng4= 19.Qb2 +=. pierre – otux, internet, 2010.

4.c3 e6 5.cb4=+ Bb4?? (better 5...Nf6 6.b5 d5=+) 6.Bg7+- 1-0. Jimito100 (1970) - Clapa2020 (2005), Rated Bullet game, lichess.org, 2020.

4.d3 e6 5.c3 bc3 6.Bc3 Nf6 7.Nf3 Na6 8.e4 Bb4 9.Be2 Bc3 10.Nc3 Qa5 11.0-0?? (better 11.Qd2-/+) 11...Qc3-+ 12.Rc1 Qa5 13.Rb1 0-0 14.Nd4 (14.Qc2 Nc5-+) 14...Qd8 (14...d6 15.Ra1-+) 15.Nb3 d5 16.Nd2 (16.e5 Nd7 17.d4 f6-+) 16...Bd7 (better 16...e5!? 17.Qc2-+) 17.e5 Ne8 18.d4 Rb8 (18...c5 19.Rb7 cd4 20.Nf3-+) 19.f4 (19.Ba6 ba6 20.Rb8 Qb8-+) 19...Nac7 (19...c5 20.Ba6 ba6 21.dc5 Rb1 22.Nb1-+) 20.Rf3 b5 21.Rh3 ba4 22.Bd3 (22.Qa4 Rb1 23.Nb1 h6-+) 22...g6 (22...f5 23.Qa4 Rb1 24.Bb1-+) 23.Rh6 (23.Qa4 Rb1 24.Bb1 f6-+) 23...Kg7 (23...Rb1 24.Qb1 Qe7 25.Qc1-+) 24.Rh3 f6 (24...Ra8!? 25.Ra1-+) 25.Qg4?? (25.Rh7 Kg8 26.Qg4+-) 25...fe5 (better 25...Rb1 26.Nb1 f5 27.Qd1-+) 26.fe5 (26.Rh7! Kh7 27.Qg6 Kh8 28.Qh7) 26...Rf5 27.Nf3? (27.Bf5 ef5 Decoy) 27...Rb1-+ 28.Bb1 Qb8 (better 28...c5-+) 29.Bf5-/+ ef5 30.Qh4 Qb1 31.Kf2 h5 (31...Qc2 32.Kg1 Qc1 33.Kf2 Kf8 34.Qh7 Qb2 35.Ke1 Be6 36.Qg6 Ke7 37.Rh7 Kd8-/+) 32.Qg5?? (better 32.Qe7 Kg8 33.Qd7 Qc2 34.Kf1 Qc1 35.Ke2=) 32...Ne6 33.Qe7 Kh6 34.Qd7 (34.Rh4 Qb7 35.Qf7-+) 34...N8g7 (better 34...Qc2 35.Kg1 Nf4 36.Ne1-+) 35.Qf7?? (35.Qc8 Qc2 36.Kf1-/+) 35...Qc2-+ 36.Kg3 (36.Kg1 Nf4 37.Qg6 Kg6 38.Nh4 Kg5 39.Rf3 Ne2 40.Kf2-+) 36...Qd3 (better 36...f4 37.Qf4 Nf4 38.Rh5 Ngh5 39.Kh4 Qg2 40.h3 Qh3) 37.Qf6? (37.Kf2 Nf4 38.Rh4 Qe2 39.Kg3 Qg2 40.Kf4 g5 41.Ke3 gh4 42.Qf6 Qg6 43.Ng5=+) 37...Qe4 (37...Qe3 38.Rh4 a3 39.h3-+) 38.Rh4 Qe1?? (better 38...Qe3 39.h3 Ng5 40.Qg5 Qg5 41.Ng5 Kg5-+) 39.Kh3 (better 39.Ne1 a3 40.Nc2+-) 39...Qe2 (better 39...Qf2!? 40.Qf7 Qf3 41.gf3 Ng5 42.Kg2 Nf7 43.f4-+) 40.Kg3 (40.Rh5! Kh5 41.Qh4) 40...Qd2 (40...a3 41.Kh3 Kh7 42.Qe7-+) 41.Kh3 (better 41.Nd2 a3 42.Rf4+-) 41...Qe3 (better 41...Qf2 42.Qf7 Qf3 43.gf3 Ng5 44.Kg2 Nf7-+) 42.Kg3 (42.Rh5! Kh5 43.Qh4) 42...Nf4 (42...a3 43.h3 a2-+) 43.Qg5 (43.Qg5 Kh7 44.Rf4=; 43.Rf4 a3 44.Qd8 Kh7=) 1-0. Jimito100 (2010) - Egornh (2025), Rated Bullet game, lichess.org, 2020.

4.e3 d5 5.Nf3 e6 6.d4 Nf6 7.Be2 Be7 8.0-0 0-0 9.Nbd2 b6 10.Bd3 c5 11.Bb5 c4 12.Nb1 Na6 13.Bc6 Ra7 14.Ne5 Ne4 15.Bb5 Nb8 16.Qe2 Nd6 17.Re1 f6 18.Nc6 Nc6 19.Bc6 Qc7 20.Bd5 ed5 21.c3 b3 22.Ba3 Bf5 23.Qh5 Bg6 24.Qd5 Kh8 25.Nd2 Bf7 26.Qf3 Rfa8 27.Red1 Ra4 28.Bd6 Ra1 29.Bc7 Rd1 30.Qd1 b2 31.Bb6 Ra1 32.Nb1 Bg6 (time, 0–1). Machete99 – guest828, ICC, 2002.

4.e3 Nf6 5.d4 e6 6.Qd2 d5 7.c4 dc4 8.Bc4 Nbd7 9.Nf3 Ne4 10.Qe2 Nb6 11.Nbd2 Ra4 12.Ra4 Na4 13.Ne4 f5 14.Ng3 b5 15.Bb3 Qa5 16.0-0 Nc3 17.Bc3 bc3 18.Ra1 Qb4 19.Qc2 Bd6 20.Ra8 0-0 21.Nf5 Bb7 22.Be6 Kh8 23.Rf8 Bf8 24.Ne5 h6 25.Nf7 Kh7 26.N5d6 g6 27.Nb7 Qb2 28.Bf5 gf5 29.Qf5 Kg7 30.h4 c2 31.Nbd6 c1Q 32.Kh2 Bd6 33.Nd6 Qb3 34.Ne8 Kg8 35.Nf6 Kf7 36.Nd5 Kg7 37.Qf6 Kh7 38.Qf7 Kh8 39.Qf8 Kh7 40.Qf7 Kh8 41.Qf8 Kh7 42.Qf7 ½–½. popovicigelu – expatrie (1830), kurnik, 2012.

5.Bc3 d5 6.e3 Nf6 7.Nf3 e6 8.Be2 Be7 9.0-0 0-0 10.Ne5 Nfd7 11.d4 Ne5 12.de5 Nd7 13.Nd2 c5 14.f4 f5 15.ef6 Bf6 16.Bf6 Qf6 17.Nf3 (17.Bb5 b6-/+) 17...b6 18.Ne5 (better 18.Bb5!?-/+) 18...Ne5-+ 19.fe5 Qe5 20.Rf8 Kf8 21.Qf1 (21.Ra3 Qe4-+) 21...Qf6 (21...Kg8 22.Qc1-+) 22.Qe1 Bd7 23.Bf3 (23.Rb1 Ra4 24.Bd3 Ra3-+) 23...Ra4 24.Ra4 (24.Rd1 Kg8-+) 24...Ba4 25.h3 Be8 26.Qb1 b5 27.Qa2 (27.Qh7 b4-+) 27...b4 28.Qa7 (28.Kf2 Qc3 29.Qa5 Ke7-+) 28...c4 (28...Qc3 29.Kf2 b3 30.Qb6-+) 29.Qc5 (29.e4 de4 30.Be4 Qe5 31.Bh7 g6-+) 29...Qe7 30.Qd4 b3 31.e4 Qf6 (better 31...Qb4 32.ed5 b2 33.Be4 ed5 34.Qd5 b1Q 35.Bb1 Qb1 36.Kf2 Qb6 37.Ke2-+) 32.Qc5 Qe7 33.Qd4 e5 (better 33...Qb4 34.ed5 b2-+) 34.Qd5 (34.Qf2 Bf7 35.ed5 c3-+) 34...Bf7 (better 34...b2 35.Qd1 Qb4-+) 35.Qa8 Qe8 36.Qa3 Kg8 37.Qb2 (37.Qb4 Qf8 38.Qb6 c3-+) 37...h6 (better 37...Qc6!? 38.Bd1 c3 39.Qc1-+) 38.Kh2 (38.Kf1 Qb5 39.Be2 Qa5-+) 38...Qe7 39.Be2 (39.Bd1 Qc5 40.Qc3 Qd4-+) 39...Qc5 40.Qc3 Qd4 41.Qa5 Qe4 42.Bf3 Qf4 43.Kh1 Qc1 (43...Qc1 44.Kh2 b2 45.Qa8 Kh7 46.Be4 Bg6 47.Bg6 Kg6 48.Qc6 Kf5 49.Qc8 Kf4 50.Qf8 Ke4 51.Qf3 Kd4 52.Qf2 Kd3 53.Qf5 e4 54.Qd5 Ke3 55.Qc5 Ke2 56.Qh5 Ke1 57.Qh4 Kd2 58.Qe4 b1Q 59.Qf4 Kd3 60.Qf5 Kd4 61.Qg4 Qe4 62.Qg7 Kd3 63.Qd7 Ke2 64.Qf7 Qcf4 65.Qf4 Qf4 66.Kh1 Qf1 67.Kh2 Kf2 68.g4 Qg2) 0-1. LengAok1469 (1750) - BeepBeepImAJeep (2525), lichess.org, 2018.

5.Nc3 d5 6.e3 Nf6 7.Nf3 Nbd7 8.Be2 e5 9.0-0 Bd6 10.Qb1 0-0 11.d3 Qc7 12.h3 Re8 Black prepares e4 13.Nd2 Nf8 14.Rc1 Qe7 15.Nd1 Ng6 16.Nf3 e4 17.Nd4 Be5 18.de4 de4 19.Bc4 Nd5 20.Ba3? (better 20.Nb3-/+) 20...Qg5-+ 21.f4? (21.Kh1 Bd4 22.ed4 Ngf4-+ (22...Ra4?! 23.Bd5 Qd5 24.Nc3 Qd4 25.Na4 Qa4 26.Bc5=+)) 21...ef3 (better 21...Ngf4 22.Qe4 Nh3 23.Kf1 Qf6 24.Qf3 Bd4 25.Bd5 Ba1 26.Ra1 cd5 27.Qf6 gf6 28.gh3 Bh3 29.Kf2 Ra4-+) 22.Nf3 Qg3 23.Bd5 (better 23.Ra2-+) 23...cd5 24.Ra2 Bh3 (24...Ra4 25.Qb5 Rd8 26.Qa4+-) 25.Qc2 (25.Ne5 A) 25...Qe5?! 26.gh3 Nh4 27.Kf1=+ (27.Qb7? Qg3 28.Kf1 Qh3 29.Ke1 Qh1 30.Ke2 Qg2 31.Kd3 Qa2-+); B) 25...Ne5 26.Kf1 Bd7-+) 25...Bg4 26.Qf2 Qf2 27.Rf2 Bf3 28.gf3 Rac8 (better 28...Ra4 29.Bb2 d4 30.ed4 Bd4 31.Bd4 Rd4-+) 29.Rc8 Rc8 30.f4 (30.Rd2 Rd8-+) 30...Bf6 (30...Nf4 31.Rd2 Ng6 32.Rd5-+) 31.Bd6 (31.Bb2 Bb2 32.Rb2 Rc7-+) 31...Be7 (31...Nh4!? 32.a5-+) 32.Be7 Ne7 33.Ra2 Nf5 (33...Rc1 34.Rd2-+) 34.Kf2 d4 (34...Nd6 35.Ke2-+) 35.ed4 Nd4 36.a5 Nc6 37.a6? (37.Ne3 Rd8-+) 37...ba6 (better 37...Ra8!? 38.Rc2 Ra6 39.Rb2-+) 38.Ra6 g6 39.Ra2 Kg7 40.Rc2 Ne7 41.Re2 Rc4 (better 41...Nd5 42.Kf3-+) 42.Ne3?? (better 42.Re7!? Rf4 43.Ke3-/+) 42...Re4 (better 42...Rf4 43.Kg2 Re4-+) 43.Kg3?? (43.Kf3 Re6-+) 43...Nf5 (better 43...Re3 44.Re3 Nf5 45.Kf2 Ne3 46.Kg3-+) 44.Kg4?? (better 44.Nf5 gf5 45.Rg2-+) 44...Re3 45.Re3 Ne3 46.Kf3 Nd5 47.Ke4 Nf4! 48.Kf4 (48.Kf3 h5 49.Ke3-+) 48...Kf6 49.Kg3 h5 50.Kh4 Kf5 51.Kg3 g5 52.Kf3 h4 53.Kg2 g4 54.Kh2 Kf4 Black prepares the advance g3 55.Kg2 Black now must not overlook the idea h3+ 55...g3 (55...Ke3 56.Kg1 Ke2 57.Kg2 f5 58.Kh1 f4 59.Kh2 f3 60.Kg1 g3 61.Kh1 f2 62.Kg2 f1Q) 56.Kh3 Kf3 (better 56...f5 57.Kg2 Kg4 58.Kf1-+) 57.Kh4 g2 58.Kg5 g1Q 59.Kf6 Qg4 60.Ke7 Qe6 61.Kf8 f5 (61...f5 62.Kg7 Qe7 63.Kh6 Qf7 64.Kg5 f4 65.Kh6 Qg8 66.Kh5 Ke4 67.Kh4 Kf5 68.Kh3 Qg3; 61...Ke4 62.Kg8 Kf5 63.Kg7 Qg6 64.Kh8 Qg5 65.Kh7 Kf6 66.Kh8 Qg7) 0-1. Jimito100 (1965) - VladTretiak20 (2015), Rated Bullet game, lichess.org, 2020.

5.Nc3 Nf6 6.e3 d5 7.Nf3 Bg4 8.Be2 e6 9.0-0 Nbd7 10.h3 Bh5 11.Na2 Be7 12.Nb4?? (better 12.Nc3-/+) 12...Bb4-+ 13.Qb3 Be7 14.Qb7 (14.Rfc1 Bf3 15.Bf3 Qb6-+) 14...Rb8 15.Qc6 Rb2 16.Bb5 (16.Rfb1 Rb1 17.Rb1 0-0-+) 16...0-0 (16...Bf3!? 17.gf3 d4 18.Qc1-+) 17.Qc3 Rb5! 18.ab5 Bf3 19.gf3 Nh5 20.b6 (20.Rfb1 Bd6-+) 20...Bf6 21.b7 (21.d4 Nb6 22.Rfb1-+) 21...Bc3 22.Rac1 Qc7 (better 22...Bd2 23.Ra1-+) 23.Rc3 Qb7 24.Rfc1 Ndf6 (better 24...Ne5!? 25.d4 Nf3 26.Kh1-+) 25.Rc7 Qb4 26.R7c2 Qh4 27.Kf1 Qh3 28.Ke2 g6 (better 28...Qg2!? 29.d4-+) 29.Rg1 Qf5 30.Rcc1 d4! 31.e4 (31.ed4 Nf4 Combination) 31...Nf4 (31...d3 32.Ke3 Qf4 33.Kd3 Qf3 34.Kc4 Qe4 35.Kc5 Rc8 36.Kb6 Nd7 37.Kb5 Rb8 38.Ka5 Qa8) 32.Kd1 Qb5 33.Re1 (33.Rg6 fg6 34.Rc3 Qa4 35.Kc1 Ne2 36.Kb2 dc3 37.dc3 Rb8) 33...d3 (33...Qb3 34.Rc2 Rc8 35.Rh1 Qc2 36.Ke1 Qc1) 34.Re3 Qb3 (34...Ne4 35.Re4 Ng2 36.Rb4 Qh5 37.Re4 Qf3 38.Re2 Qe2) 35.Ke1-+ Ng2 (35...Qb2 36.Kd1 Ra8 37.Rd3 Nd3 38.Rc3 Rd8 39.Rc7 Qb1 40.Rc1 Qc1 41.Ke2 Qe1) 36.Kf1 Ne3 37.fe3 Qb2 38.Rd1 Rc8 39.Ke1 (39.Rb1 Qb1 40.Kg2 Qe1 41.e5 Nh5 42.f4 Qg3 43.Kf1 Rc1) 39...Rc1 40.f4 (40.Rc1 Qc1 41.Kf2 Qd2 42.Kg3 Nh5 43.Kh3 Qf2 44.e5 Qg3) 40...Rd1 (40...Ne4 41.Kf1 Qd2 42.Rc1 Qf2) 41.Kf2 Qd2 42.Kg3 Qe3 43.Kh4 Rh1 (43...h6 44.e5 Rh1) 44.Kg5 Kg7 45.e5 h6 0-1. Jimito100 (1980) - synapsid (2275), Hourly Bullet Arena, lichess.org, 2020.

5.c4 bc3 6.Nc3 d5 7.Nf3 Nf6 8.Be2 Bb4 9.0-0 0-0 10.Qb3 Bd6 11.Nd4 (11.d4 b6-/+) 11...c5 (11...e5 12.Nc2-/+) 12.Ndb5 c4 (12...Be7 13.d3-/+) 13.Qc2 Be7 14.d3 Bd7 (better 14...cd3!? 15.Qd3 Nc6-/+) 15.dc4+= dc4 16.Bc4 Bb5 (16...Qa5 17.Rfd1+=) 17.Bb5 (17.ab5 Ra1 18.Ra1 Qc7+=) 17...Nc6 18.Ne4 Ne4 19.Qe4 Rc8 (19...Qc7 20.Rac1+=) 20.Rfd1 Qb6 21.Rac1 (21.Rab1 Qc7+-) 21...Rfd8+= 22.Rd8 Rd8 23.g3 (23.Bc6? Qb2 (23...bc6?! 24.Bc3=) 24.Rf1 bc6 25.Qc6 Bd6-+) 23...g6?? (23...Rd2!? 24.Bc3 Rd6+=) 24.Bc6 (24.Rc6 bc6 25.Qe5 Rd1 26.Kg2 Bf6 27.Qf6 Kf8 28.Qh8 Ke7 29.Bf6 Kd7+-) 24...bc6? (better 24...Qb2 25.Rb1 Qe2+-) 25.Bd4 (better 25.Qe5 f6 26.Qe6 Kf8 27.Bf6 Bf6 28.Qf6 Kg8 29.Qe6 Kh8 30.Qc6+-) 25...c5= 26.Rb1 Qb1? (better 26...Qa6 27.Bc3 f6=) 27.Qb1+- cd4 28.Qb7 (28.ed4 Rd5+-) 28...Bf8? (better 28...d3 29.Qe7 Rd5 30.Qe8 Kg7=) 29.ed4+- Rd4 (29...Rd5 30.Qa8 Rd4 31.a5+-) 30.a5 Rd1 31.Kg2 Ra1 (31...Rd5 32.a6 Bc5+-) 32.a6 Bc5 33.Qc8 (33.Qb8 Bf8 34.a7 h6+-) 33...Bf8 34.Qc5 (better 34.Qa8+-) 34...Bc5-+ 35.a7 Ra7 36.h4 Rd7 (36...Ra2 37.Kf1-+) 37.h5 Rd2 38.hg6 Rf2 39.Kh3 hg6 40.Kg4 (40.g4 f5 41.Kg3 Be3 42.g5 e5 43.Kh3 Bf4 44.Kh4 Rh2) 40...Bd6 (40...f5 41.Kh3 Be3 42.g4 Bf4 43.gf5 gf5 44.Kh4 Rh2) 41.Kh3 (41.Kh4 f5 42.Kh3 Kg7 43.Kh4 Rh2 44.Kg5 Rh5) 41...Bg3! 42.Kg3 (42.Kg3 Rf5 Combination) 42...Rf3! 43.Kg4 (43.Kf3 f6 Passed pawn) ½–½. RichardSommer (2045) – OGamiasTisGeitonias (2010), lichess.org, 2020.

5.Nf3 d5=+.

5.Nf3 Nf6 6.Be2 d5 7.0-0 Be7 8.c3 0-0 9.cb4 Bb4 10.Qb3 Bd6 11.Nc3 Qc7 (11...e5 12.d3-/+) 12.h3 (12.Rfc1 Qa5-/+) 12...Nbd7 13.Rfc1 Nc5 14.Qc2 b6 (14...e5 15.d4 ed4 16.Nd4-/+) 15.d4 Nce4 (15...Ncd7 16.Nb5 cb5 17.Qc7 Bc7 18.Rc7 ba4 19.Bb5=+) 16.Nb5 (16.Ne4 Ne4 17.Qc6 Qa7=) 16...Qe7 (better 16...cb5!? 17.Qc7 Bc7 18.Rc7 ba4-/+) 17.Nd6= Nd6 18.Bd3 h6 (18...Ba6!? 19.Ne5 Bd3 20.Qd3 Rfc8=) 19.Ba3+= Bb7 20.Ne5 Rac8 (20...Rfc8 21.Qb1 b5 22.ab5 cb5 23.Rc8 (worse 23.Bb5 Ra3 24.Ra3 Rc1 25.Qc1 Nb5-/+) 23...Rc8 24.Qb5+/-) 21.Rab1 b5 22.a5 Qd8 23.Bb4 (23.Ra1!?+/-) 23...Re8+= 24.Ra1 Nc4 Attacking the isolated pawn on a5 25.a6 Ba8 26.Bc4 dc4 27.Bc5 Nd7 28.Bb4 (better 28.Nd7!? Qd7 29.f4=) 28...Ne5-/+ 29.de5 Qd3 (29...c5 30.Be1 Re7-/+) 30.Qa2?? (30.Qd3!? cd3 31.Ra3=) 30...Red8 (30...c5 31.Bc3-+) 31.a7? (better 31.Bd6!?=+) 31...Qe4 (31...c5!? 32.Bc3-+) 32.Bd6-/+ c5 33.Bc5?? (better 33.f3 Qe3 34.Qf2-/+) 33…Qg2 0-1. Jimito100 (2000) - Ochnee (1945), Rated Bullet game, lichess.org, 2020.

4.a3 d5 5.e3 b5 6.Nf3 Nf6 7.Be2 Qa4 8.0-0 Qg4 9.Ne5 Qa4 10.Nc3 Qh4 11.Nf3 Qh6 12.a4 b4 13.Nb1 Bg4 14.Bf6 (14.a5 e6=) 14...ef6 (14...Qf6 15.d4=) 15.c3 Bd6 16.g3 (16.h3 Bf3 17.Bf3 Na6=) 16...Bh3 (16...0-0 17.cb4 Bb4 18.Qb3=+) 17.Re1= Nd7 (17...Na6 18.Nd4 c5 19.Nb5=) 18.Qb3 Rb8 19.a5 Nc5 20.Qc2 (20.Qb2!? bc3 21.Qc3=) 20...b3=+ 21.Qb2 Ne6 (21...Qg6!?=) 22.a6 0-0 23.Nd4 (23.d4!?+=) 23...Nd4 (23...Rb6 24.c4=+) 24.ed4 Rb6 25.a7 (25.c4 dc4 26.Bc4 Qh5=+) 25...Ra8 26.c4 Rb4 (better is 26...dc4!? 27.Na3 Ba3 (27...Ra7? 28.Nc4 Ra1 29.Ra1+-) 28.Ra3 Be6=+) 27.cd5= cd5 (27...Qg5 28.Nc3+= (< 28.dc6 Qd5 29.f3 Qc6=)) 28.Nc3 Rd4? (28...Rb7 29.Nb5 Bf8 30.Qb3+/–) 29.Bf3?? (better is 29.Qb3 Qd2 30.Red1+-) 29...Rd2?? (29...Be6 30.Nd5 Rd2 (30...Qd2? 31.Qd2 Rd2 32.Nf6 gf6 33.Ba8+-) 31.Qb3 Rf2 32.Kf2 Qh2 33.Ke3 Bc5 34.Kd3 Qg3+/–) 30.Qb3+- Bc5 (30...g6 31.Qb7 Qf8 32.Nd5 Kg7+-) 31.Qb8!! (31...Bf8 32.Qa8+-) 1–0. Bonetti,Shane – Sigma, 1998.

4.Bc3 Qb6 5.e3 d5 6.Nf3 Nf6 7.Be2 Nbd7 8.0-0 e6 9.h3 Bd6 10.d3 0-0 11.Nbd2 Qc7 12.e4 (12.a4 e5=+) 12...e5-/+ 13.a4 (13.Bb2 b5-/+) 13...d4 (13...Nc5!? 14.a5 de4 15.de4 Nce4-/+) 14.Bb2 b5 (14...Bb4-/+) 15.a5 (better 15.c3!? dc3 16.Bc3=+) 15...Ra5-/+ 16.Ra5 Qa5 17.Nb3 Qb6 18.Qd2 c5 19.Ra1 Re8 20.Na5 c4! 21.dc4 (21.c3!? dc3 22.Qc3 cd3 23.Bd3-+) 21...Ne4-+ 22.Qd3? (22.Qe1 b4-+) 22...Nf2! 23.Kf2 e4 24.Qd4 (24.Qd1 ef3 25.Bd3-+) 24…Bc5 (24...Bc5 25.Kf1 Bd4 26.Nd4 b4-+; 24...ef3?! 25.Qb6 Nb6 26.Kf3-/+) 0-1. anotherheaven (1780) - BeepBeepImAJeep (2600), lichess.org, 2015.

4.Bc3 Qd5 5.a3 (5.a4 b5 -+) 5...e5. Aasum.

4.Nc3 Na6 5.a3 d5 6.e3 e5 7.h3 Be6 8.Nf3 f6 9.Be2 Bc5 (9...b5 10.0-0=) 10.0-0 (10.d4 e4 11.dc5 ef3 12.Bf3 Ne7=) 10...Ne7 (10...Bd6 11.Qe1=+) 11.d4= Ba7 (11...e4!? 12.dc5 ef3 13.Bf3 0-0=) 12.de5+- fe5 13.Ne5 0-0-0? (better 13...Bb8!? 14.Bd3 Bf5+-) 14.Ba6 (14.Bg4 Bf5 15.Nf7 d4 16.ed4 Bd4 17.Bf5 Qf5 18.Nd8 Rd8+-) 14...Qa6 15.Qe2 (15.Ne2!? Rhf8+-) 15...Qe2+- 16.Ne2 Rhg8 17.Nf4 g5?? (better 17...Bf5+-) 18.Ne6+- Rde8 (18...Rd6 19.Nd4+-) 19.Nd4 (19.Ng4 Rg6 20.Nf6 Rh8+-) 19...Ng6 (19...Bb8 20.Ng4 Rg6 21.Nf3+-) 20.Ng6 (20.Nf7!? Kd7 21.Ng5 Bd4 22.Bd4 Nh4 23.Nh7 Rg2 24.Kh1 Re7 25.Nf6 Ke6+-) 20...Rg6 21.Nf3 h5 22.Rac1 (22.a4 Bc5+-) 22...Re4 (22...b5 23.Ra1+-) 23.Nd4 (23.Nd2 Re8+-) 23...c5 (23...g4 24.Kh1+-) 24.Nb5 Bb8 25.Rcd1 (25.Nc3 Re5+-) 25...Rc4 (25...Rb6 26.Rd5 Rb5 27.Bf6+-) 26.c3 (better 26.Rd5 Rc2 27.Bc3 b6+-) 26...Rb6 27.a4 (better 27.Rd5!? Rb5 28.Ba1+-) 27...Ra4 28.Rd5 Rb5 29.Bc1 Rc4? (better 29...Ra1+=) 30.Bd2 g4 (30...Rb2 31.Rd1+-) 31.Rh5 gh3 32.Rh3 (32.gh3!? Rb2 33.Rh8 Kc7+-) 32...Be5 33.f4 Bc3 34.Bc3 Rc3 35.f5 c4?? (35...Rd3+-) 36.Rf4 (better 36.f6 Rc1 37.Rc1+-) 36...Re5?? (36...Rc1 37.Kf2 Rb2 38.Kg3+-) 37.e4 (better 37.Rh8 Kd7 38.f6 Rc1 39.Kh2+-) 37...Rh3+- 38.gh3 c3 39.Rf2 (39.f6!? Re8 40.Rf3+-) 39...Re4 40.Rc2?? (better 40.f6 Re8 41.Rf3+-) 40...Rc4-/+ 41.f6 Kd7 42.h4 (42.Kf2 Ke6 43.Ke2=+) 42...Rh4 43.Rc3 Rf4 44.Rb3 Kc8?? (better 44...Kc7-+) 45.Rb6= Kc7 46.Re6 Kd8 (46...b5 47.Kg2=) 47.Kg2 b5 48.Rb6 b4 49.f7 Ke7 50.Rb7 Kf8 51.Kg3 Rc4 52.Kf2 Rc2 53.Ke3 b3 54.Rb3 Kf7 55.Rd3 ½–½. tetis (1625) – bigfrostgiant, gameknot.com, 2018.

4.Nc3 b5 5.a3 (5.Nf3 b4 6.Ne4 d5 idea f6) 5...e5 6.Ne4 (6.Nf3 f6 unclear) 6...f5 (6...d5!; 6...Ba3? 7.Nd6 +/–) 7.Ng3 f4 8.Ne4 d5 9.Nc3 Ba3? (9...Bc5!?) 10.Ra3 +/–. Aasum.

4.c4 Na6 5.Nf3 Nf6 6.e3 d6 7.Be2 Nc5 8.Qc2 Qa4 9.Qa4 Na4 10.Bf6 gf6 11.d4 Rg8 12.g3 Bg7 13.Nbd2 f5 14.Bd3 c5 15.0-0 cd4 16.Nd4 Bd7 17.Nf5 Ba1 18.Ra1 Nc5 19.Bc2 h5 20.h4 Ba4 21.Nd4 Bc2 22.Nc2 f5 23.Nd4 e6 24.Nb5 Kd7 25.Kf1 Rgc8 26.a3 Na4 27.Ke1 Nb6 28.Rc1 Ra4 29.c5 Rc5 30.Rc5 (30.Rb1 Nd5 31.Nd4-+) 30...dc5 31.Kd1 Ra5 32.Nc3 Ra3 33.Kc2 Nd5 34.Ndb1 Ra5 35.Kd3 Nc3 36.Nc3 Kc6 37.Kc4 b5 38.Kb3 b4 39.Ne2 Ra3 40.Kb2 e5 41.Nc1 Kd5 0–1. combijack (1920) – karelploeger (1835), gameknot.com, 2013.

4.c4 Qb4 5.Qb3 Qb3 6.ab3 Ra1 7.Ba1 d6 8.f4 Bf5 9.d3 f6 (9...d5 10.Nf3=) 10.Nf3 (10.e4 Bg6+=) 10...e5= 11.fe5 (11.e4 Bg4=) 11...de5 12.e4 Bg4 (12...Bb4 13.Nbd2 Bg4 14.Ne5+/–) 13.Bc3 Nh6 14.Be2 Bc5 (14...Na6 15.d4 ed4 16.Nd4=) 15.b4 Ba7 (15...Be3 16.h3 Bd7 17.d4 ed4 18.Nd4+=) 16.Nbd2 (16.Rf1 Nd7+=) 16...Nd7 (16...Na6 17.h3 Bd7 18.Nb3+=) 17.h3 (17.c5 b6 18.b5 cb5+=) 17...Be6 18.Nb3 (18.d4 ed4 19.Nd4+=) 18...b6 (18...Nf7!?+=) 19.d4+/– Bb8 20.d5 (20.Bd2 Bf7+/–) 20...cd5 21.cd5 (21.ed5 Bf7 22.g4 b5=) 21...Bf7 22.Bb5 (22.Kf2 f5 23.Rd1 Ke7+=) 22...Bg6 23.Nbd2 Ke7 24.Ke2 (24.Nh4 Bh5+/–) 24...Rc8+= 25.Bc6 Nf7 (25...f5 26.Nc4+=) 26.Nh4+/– Nd8 (26...Nf8 27.Ng6 Ng6 28.g3+/–) 27.Ng6 hg6 28.b5 Nc5 29.Ke3 Na4 (29...f5 30.Ra1+/–) 30.Bb4+- Bd6 31.Bd6 Kd6 ½–½. Negroni,Giovanni – Van Esbroeck,Dirk, corr ICCF TT–4–90–14, 1993.

4.e3 b5 5.c4 bc4 6.Bc4 Qb4 (6...Ba6 7.Bc3 Qf5 8.d3=) 7.Bb3 Ba6 8.a3 Qb5 (8...Qa5 9.Ne2=) 9.Nf3 Nf6 10.d4 d5 11.a4 Qb7 12.Nbd2 e6 13.h3 (13.Rb1 Bd6=+) 13...Bb4 14.Ra2 (14.Ba3!?=+) 14...Ne4-/+ 15.Qc2 (15.a5!?-/+) 15...Nd7 16.Ba3 Ba5 17.Rb2 Qc7 18.Rb1 (18.Ba2 c5-+) 18...Ndf6 (18...c5 19.g3-+) 19.Ra1 (better is 19.Ba2!?-/+) 19...Rb8 20.Ba2 Nd2 21.Nd2 Ne4 22.Bc1 0-0 23.Rb1 Rb1 24.Bb1 Rb8 25.Ba2 f5 (better is 25...Qd8 26.g3 Qf6-+) 26.g4 (26.f4-+) 26...f4 27.Rg1 (27.Bb1-+) 27...fe3 28.fe3 Qh2 (29.Bc4 Bc4 30.Qc4 Bd2 31.Kd1 Qg1 32.Ke2 Qe1 33.Kd3 Nf2 34.Kc2 Qc1#) 0–1. Bonetti,Shane – muysal01 (1720), ICC, 2002.

4.e4 Qb4 5.Qc1 (5.Bc1 Qe4 6.Ne2 d5-/+) 5...Qe4-/+ 6.Ne2 Nf6 (6...e5 7.Nbc3 Qh4 8.g3-/+) 7.d3 (7.Nbc3 Qe6=+) 7...Qb4 (7...Qe6 8.c4-/+) 8.Bc3 Qb5 (8...Qa4 9.Bd4-/+) 9.Nd4 (9.Qd2 d5-/+) 9...Qd5 10.Qe3 (10.a4 e5 11.Nf5 d6-/+) 10...Ra2-+ 11.Be2?? (better is 11.Nd2-+) 11...Ra1 12.Ba1 Qa2 13.0-0 Qa1 14.Nd2 Qa5 15.Nc4 Qc7 16.Nf5 e6 17.Ra1 Nd5 18.Qe4 b5 19.Nd2 Bb4 20.Nb3 Bc3 21.Rb1 Be5 22.Ng3 Nc3 (23.Qb4 Na6-+) 0–1. ismaelarango – albatroz (1830), internet, 2005.

4.e4 d5 5.ed5 Qd5 6.Nc3+= Qa5 7.Bc4 Nf6 8.Nf3 Bg4 9.Bb3 (9.h3!? Bf3 10.Qf3=) 9...Qh5 10.d3 e6 11.Bc4 (11.0-0!?=) 11...Nbd7-/+ 12.d4 Bf3 (12...0-0-0 13.Be2-/+) 13.gf3 (13.Qf3!? Qf3 14.gf3=+) 13...Be7 14.a4 (14.f4 Qh6-/+) 14...Bb4 15.Rb1 (15.a5 Ra5 16.Ra5 Ba5-+) 15...0-0 (better 15...Nb6 16.Qd3 Nc4 17.Qc4 Nd5-+) 16.Ra1?? (16.Kf1-+) 16...Nb6 17.Bb3 (17.Qd3 Na4 18.Ra4 Ra4-+) 17...Nbd5 18.Qd3 (18.Bd5 Nd5 19.Qd3-+) 18...Nf4 19.Qd1 Qa5 (better 19...c5 20.h3 cd4 21.Bc1 Bc3 22.Kf1 Ba1 23.Bf4-+) 20.Qd2 N6d5 21.Kf1 (21.Bd5 Nd5 (21...ed5?! 22.0-0-+) 22.Ra3 Ba3 23.Ba3 Nc3 24.Bf8 Kf8-+) 21...Bc3 22.Bc3 Qc3 (better 22...Qa6!? 23.Kg1 Nc3 24.Re1 Nce2 25.Kf1-+) 23.Qc3 Nc3 24.Ke1 Rfd8 25.Kd2 Ncd5 (25...Na4 26.c3 Nc5 27.Kc2-+) 26.h4 (26.c3 Nf6 27.Ke3 Ng2 28.Ke2 Ra5-+) 26...Ra5 (26...Nf6 27.c3-+) 27.Ra3 (27.Rab1 e5! 28.de5 Rc5-+) 27...Rda8 (27...c5!? 28.dc5 Rc5 29.Bd5 Rdd5 30.Kc1 Ne2 31.Kb1-+) 28.c4 Nf6 29.Kc3 b5 30.Rb1 (30.Bc2 Nd7-+) 30...g6 (30...Ne2 31.Kd3 b4 32.Raa1-+) 31.Rba1 (31.Bc2 Kg7-+) 31...bc4 (31...Ne2 32.Kb4-+) 32.Kc4 (32.Bc4 Kg7-+) 32...N6d5 33.Bc2 (33.Bd1 Nb6 34.Kc3 Rd8-+) 33...Rb8 (33...Nb6 34.Kc3 c5 35.Rb3-+) 34.Rb3 Rba8 (better 34...Nb6!? 35.Kc3 Rd8 36.Rb2-+) 35.Rbb1?? (35.Rba3 Nb6 36.Kb4-+) 35...Kg7 36.Rb2 (36.Rb7 e5! 37.Re1 ed4 38.Kd4 Ra4 39.Ba4 Ra4 40.Kc5 Nd3 41.Kc6 Ne1 42.Kd5 Nf3-+) 36...Rc8 37.Rab1 (37.h5 Nh5 38.Be4 Nhf4-+) 37...c5 38.Rb8 Rc7 39.R8b7 cd4 (better 39...Rc6 40.Bb3-+) 40.Rc7 Nc7 41.Kd4 Kf6 42.Rb7 (42.Kc4 Ra8-+) 42...Ncd5 43.Rb1 (43.Kc4 Ra8-+) 43...Ne2 (43...Ra8 44.Rb5-+) 44.Kd3 Nec3 45.Ra1 Ke5 46.Rg1 (46.h5 gh5 47.Kd2 Kd4-+) 46...Na4 47.Re1 (47.Kd2 Nab6 48.h5 gh5-+) 47...Kd6 48.Rb1 (48.Ke2 Nf4 49.Kd2 Rd5 50.Kc1 Nc5-+) 48...Nab6 (48...Nc5 49.Kd2-+) 49.Rd1 (49.Bb3 Nd7 50.Kc2 Nc5-+) 49...h5 (49...Ra2 50.Rc1-+) 50.Bb3 Rb5 51.Kc2 Rb4 52.Bd5 (52.Rh1 Rd4-+) 52...Nd5 53.Rh1 (53.Kd3 Rh4 54.Ke2 Rh2-+) 53...Ke5 54.Rh3 Kf4 55.Rg3 Rc4 56.Kd3 (56.Kb3 Rc3 57.Kb2 Rf3-+) 56...Ra4 57.Ke2 Ra3 (better 57...Ra2 58.Kd3-+) 58.Rh3 (58.Rg5 Rf3 59.Ke1 Rh3-+) 58...Ne7 (58...Nc3!? 59.Kf1-+) 59.Rh1 (59.Kf1 Nf5 60.Kg2 Nd4-+) 59...Ra2 60.Kf1 (60.Kd3-+) 60...Ra1 61.Kg2 Rh1 62.Kh1 Kf3 (62...Kf3 63.Kg1 Nf5-+) 0–1. kewois (1800) – irish_gent (1820), gameknot.com, 2013.

4.Nf3 Na6 5.Nc3 h6 6.g3 b5 7.a3 Nc5 8.Bg2 Na4 9.Na4 Qa4 10.0-0 h5 11.e4 h4 (11...e6 12.e5+=) 12.Nh4+/– Rh4 (better is 12...e6!?+/–) 13.gh4+- d6 14.Re1 Be6 15.Rc1 Nh6 16.d4 Bg4 17.Qd3 Rc8 (17...Bd7 18.Bf3+-) 18.c4 bc4 19.Rc4 Qa6 20.Qb3 Bd7 (20...Qa7 21.Rb4+-) 21.Ra4 Qb5 22.Qb5 cb5 23.Ra7 f6 24.Rc1 Rc1 25.Bc1 Nf7 (25...e5 26.Bb2+-) 26.Bf3 Nd8 (26...Nh8+-) 27.Bh5 Nf7 28.Ra8 Bc8 29.Rc8 Kd7 30.Rf8 Nd8 31.Bg4 Kc7 32.Re8 Nc6 33.d5 Ne5 34.Re7 Kb6 35.Be3 Ka6 (35...Ka5 36.Ra7) 36.Ra7 1–0. usingprogram (2045) – stupcat (1695), kurnik, 2011.

4.g3 e6 5.Bg2 (5.Nf3 d5=) 5...d5=+ 6.Nf3 Qb6 7.Qc1 Nd7 8.0-0 Ngf6 9.d3 Be7 10.Nbd2 h6 (10...0-0 11.c4=) 11.c4 c5 12.cd5 (12.Qc2 Qd6=) 12...ed5 13.Ne5 (13.Qc2 Qe6=) 13...Qd6 (13...Qe6 14.f4=+) 14.Nd7= Bd7 15.Nb3 (15.Re1 Qe6=) 15...b6 (15...0-0 16.e4 d4 17.Ba3=+) 16.Qe3 (better 16.e4!? de4 17.de4+=) 16...Bc6 17.d4 (17.Rfc1 0-0=+) 17...c4-/+ 18.Nd2 b5 19.Nf3 (19.Rfb1 b4-/+) 19...0-0 (19...Ng4 20.Qd2-/+) 20.Ne5 Rfe8 21.Qc3 (21.a3 Qe6=+) 21...b4-/+ 22.Qc2 c3 (22...Rec8 23.Nc6 Rc6 24.Rfe1-/+) 23.Bc1 Ba4 24.Qd3 Rac8 (24...Qa6 25.Qf5 Qe6 26.Qd3-/+) 25.Bf4 Qb6 26.Bh3 Bb5 27.Qc2 Ra8 28.Be3 Bd6 29.Nd3 Bd3 30.Qd3 Ne4 (30...Ra5 31.Qc2-+) 31.f3 (31.Bf5!?-/+) 31...Nf6-+ 32.Qc2?? (better 32.Rfc1-+) 32…Re3 0–1. JUANKARODA (1805) – Rolf52 (1850), lichess.org, 2020.

5.e3 e5 6.Nge2 Bd6 7.g3 (7.Ng3 Nf6-/+) 7...Be6 (7...Nf6 8.f4-/+) 8.Bg2 Ne7 9.0-0 0-0 10.d3 (10.f4 Nf5=+) 10...Nd7-/+ 11.Qd2 b5 12.a3 Nc5 (12...Nb6 13.Qc1-/+) 13.Rfd1 Na4 (13...f6 14.d4 Nd7 15.e4-/+) 14.Na4 Qa4 15.e4 d4 16.f4. Chatterjee – Myrberg,Johnny, email 4AMM–F, 1998.

5.e3 Nf6=+.

5.Nf3 e5 6.e3 (6.e4 d4 7.Ne2 Nd7=+) 6...Bd6 7.Be2 (7.Ne2 Nd7-/+) 7...Nf6-/+ 8.0-0 0-0 9.h3 (9.a4 Nbd7-/+) 9...Qc7 (9...Bf5 10.d3-/+) 10.d3 (10.a4 Bf5-/+) 10...Nbd7 (10...b5 11.a4 b4 12.Nb1-/+) 11.a3 (11.a4 Re8-/+) 11...b5 12.Re1 Nb6 13.Qd2 (13.d4 e4 14.Ne5 Re8-/+) 13...Rd8 14.e4 (14.d4 e4 15.Ne5 h6-/+) 14...de4 (14...d4 15.Nb1-+) 15.Ne4 (15.de4 Na4 16.Na4 Ne4-/+ (16...ba4?! 17.Qe3+=)) 15...Ne4 16.de4 Be6 17.Qg5 (17.Bc3 Na4 18.Bb4 c5-/+) 17...f6-+ 18.Qe3 (18.Qh4-+) 18...Na4 19.Qc1 Qa7 20.Rd1 (20.Rf1 Bc5-+) 20...Bc5 21.Rf1 Bf7 (21...Qf7 22.Re1-+) 22.Qb1 (22.Bd3 Qb6-+) 22...Nb2 (22...Qa5 23.Qc1-+) 23.Qb2 Ba3 24.Qc3 (24.Qb1 Qc5-+) 24...Qc5 25.Qc5 Bc5 26.Ra8 Ra8 27.Rd1 Kf8 28.Rd7 (28.Ne1 Ra4-+) 28...Ra1 29.Rd1 (29.Kh2 Bf2 30.g4 Be3-+) 29...Rd1 30.Bd1 Bg6 31.Ne1 (31.c3 Be4 32.Nd2 Bd5-+) 31…Be4 0–1. Gross,G – Zemitis,V, email b4–01–03, 2001.

5.Nf3 Nf6 6.e3=+.

5.Nf3 Bg4 6.e3 Nf6 7.Be2 Bf3 8.Bf3 e6 9.0-0 Bb4 10.Bh5? (10.e4 0-0=) 10...g6?? (better 10...d4 11.Bf7 Kf7 12.ed4 Rd8-+) 11.Bf3 Nbd7 12.Qe2 0-0-0 (12...e5 13.a3 Bd6 14.Rfb1=) 13.Nb1 (better 13.Rab1+=) 13...Nc5?? (13...Bd6 14.d3=) 14.Bc3 (better 14.Bf6 Qa6 15.Qd1+-) 14...Bc3= 15.Nc3 (worse 15.dc3 e5=+) 15...e5 16.Bg4 Ng4 17.Qg4 f5 18.Qg5 Rde8 (18...d4 19.ed4 ed4 20.Nb1=+) 19.Qf6 Nd7 20.Qf7 (20.Qh4=) 20...Rhf8 (better 20...Qa3!? 21.Qg7 Qf8 22.Qf8 Rhf8=+) 21.Qh7+= d4 22.ed4 ed4 23.Nb1 g5 24.c3 (24.Qg7 Qd5=) 24...Qb5 (24...Rh8 25.Qg7=) 25.Na3 (25.cd4 Qd3+-) 25...Qd5 (25...Qa4 26.Nb1=) 26.Nc2 f4 (26...Rh8 27.Qg7 Qd6 28.f4=) 27.f3 (27.Nd4 c5 28.Nb5 f3+-) 27...Re2 (27...dc3 28.dc3 Rh8 29.Qg7=) 28.Nb4 (better 28.Qd3 Rfe8 29.Nd4+-) 28...Rf7?? (better 28...Qe5 29.Rad1 Rh8=) 29.Qh8 (29.Nd5 Rh7 30.Nb4 Rd2-/+) 29...Kc7 (29...Rf8 30.Qf8! Nf8 31.Nd5 cd5+-) 30.Nd5 cd5 31.Qd4 Ne5 (31...Kd6 32.Rfe1 Rfe7 33.Re2 Re2 34.Qg7 Rd2 35.Qg5+-) 32.Qd5 Rd7 (32...Re7 33.Rab1 b6 34.d4+-) 33.Qc5 Kd8 34.Rf2 (better 34.Rae1 Re1 35.Re1 Nc6 36.Qg5 Re7 37.Re7 Ne7 38.Qf4 Nc6+-) 34...Rdd2 (34...Rf2 35.Qf2 Ke7+-) 35.Re2 Re2 36.Rf1 (36.Rd1 Nd7 37.Qd6 Ke8 38.Qd7 Kf8 39.Qf5 Ke8 40.Qf6 Re7 41.Rd6 Re1 42.Kf2 Rf1 43.Kf1 g4 44.Rd8) 36...Nd3 37.Qd5 Kc7 38.Qd3 Ra2 39.Qc4 (39.Rd1 Kb8 40.Qd6 Ka7 41.Qc5 b6 42.Rd7 Ka6 43.Qc4 b5 44.Qe6 Ka5 45.Ra7) 39...Kb8+- 40.Qa2 b5 (40...Kc8 41.Qe6 Kd8 42.Rd1 Kc7 43.Qd6 Kc8 44.Qd8) 41.Qg8 (41.Re1 Kc7 42.Re7 Kd8 43.Qe6 b4 44.Qd7) 41...Kc7 (41...Kb7 42.Re1 b4 43.Re6 bc3 44.Qf7 Kc8 45.Re8) 42.Qg5 (42.Re1 Kc6 43.Qc8 Kd5 44.Qe6 Kc5 45.Re5) 42...Kc6 43.Qf4 b4 44.Qb4 Kd5 (44...Kd7 45.Rd1 Ke6 46.Rd6 Ke7 47.Ra6 Ke8 48.Ra7 Kd8 49.Qf8) 45.Qd4 (45.Rd1 Ke6 46.Rd6 Ke7 47.Ra6 Ke8 48.Ra7 Kd8 49.Qf8) 45...Ke6 (45...Kc6 46.Rd1 Kb5 47.Qd6 Ka5 48.Rd5 Ka4 49.Qb4) 46.Re1 Kf5 (46...Kf7 47.Qd6 Kg8 48.Qg6 Kf8 49.Re8) 47.Qe4 (47.Qd6 Kg5 48.Re5 Kh4 49.Qf6) 47...Kf6 48.Qe6 (48.Qe7 Kg6 49.Re6 Kf5 50.Qf6) 48...Kg5 (48...Kg7 49.Qe7 Kg8 50.Qd7 Kf8 51.Re8) 49.Rf1 (49.Re5 Kf4 50.Qf6) 49...Kf4 50.Qe4 (50.h4 Kg3 51.Qg4) 50...Kg5 51.Qg4 (51.Qe7 Kg6 52.g4 Kh6 53.Re1 Kg6 54.Re6) 51...Kf6 52.Re1 Kf7 53.Qe6 (53.Qf5 Kg8 54.Qg6 Kf8 55.Re8) 53...Kg7 54.Re5 Kh7 (54...Kf8 55.Qd7 Kg8 56.Re8) 55.Rg5 Kh8 56.Qh6 (56.Qg8) 1–0. cheecharito – jcarlson, gameknot.com, 2018.

5.a3 e5 6.Nf3 +=.

5.a3 e6 6.g3 (6.e3!?=) 6...Be7 7.Bg2 0-0 8.Nf3 d5 9.e3 Nbd7 10.0-0 e5 11.Ne2 Qc7 12.d3 h6 13.Nd2 b6 14.c4 Bb7 15.Nf3 Ra7 16.cd5 cd5 17.d4 e4 18.Nd2 Rfa8 19.Rc1 Qd8 20.Nb1 Ba6 21.Rc3 Rc8 22.Rb3 Bc4 23.Rc3 Be2 (better is 23...b5!?-/+) 24.Qe2= Rc3 25.Nc3 Ba3 (better is 25...Qf8!?=) 26.Nb5+/– Ra5? (better is 26...Bb2 27.Na7 Ba3+/–) 27.Ba3+- Qa8 28.Be7 Qa6 (28...Ra2 29.Qd1+-) 29.Rb1 Ne8 30.Bh3 Nf8 (30...Nef6 31.Qb2+-) 31.Bf8 Kf8 32.Kf1 (32.Qb2!? Qb7+-) 32...Ke7 33.Qb2?? (better is 33.Kg2 Kf8 34.Qb2+-) 33...Nd6+= 34.Kg1 Qb5 35.Qb5 Rb5-+ 36.Ra1 Ra5 37.Rc1 Nc4 38.Bf1 b5 39.Rb1 f5 40.Kg2 g6 41.h3 Kd6 42.Be2 h5 43.h4 Kc6 44.Bf1 Ra4 45.Be2 b4?? 46.Bd1 b3 47.Rb3 Ra1 48.Be2 Ra2 49.Kf1?? Nd2-+ (49...Nd2 50.Kg2 Nb3-+) 0–1. Knightprancer – Hal1958, playchess.de, 2006.

5.d4 Ne4 6.Qd3 Qb4 7.f3?? (better is 7.Rd1 d5 8.f3-+) 7...Qb2 8.Rb1 (8.Nd1 Qa1 9.Qe4 d5-+) 8…Qc3 (9.Qc3 Nc3-+) 0–1. oasis – smurilo (1815), chessHere.com, 2006.

5.e3 d5 6.Be2 e5-/+ 7.Nf3 Bd6 8.0-0 Nbd7 9.h3 Nf8 (9...0-0 10.a4-/+) 10.d4 e4 11.Nd2 g5 (better is 11...Ng6-/+) 12.g4?? (better is 12.f3 ef3 13.Rf3=) 12...h5-+ 13.a4 (13.Nce4 Ne4 (< 13...de4 14.d5 Rh6 15.Bf6 Rf6 16.Ne4-+) 14.Ne4 de4-+) 13...Qc7 14.Re1 hg4 15.hg4 Ng6 16.Ba3 Bh2 17.Kf1 Rh4 18.f3 ef3 19.Bf3-+ Ng4 20.Bg4 Bg4 21.Qb1 Qg3 (22.Nd5 Qg1#) 0–1. C_Artist_Think – C_D_B7, chessHere.com, 2006.

5.e3 d5 6.f4 Bf5 7.Nf3 e6 8.Ne5 Nbd7 9.Bd3 (better is 9.g4 Bg6 10.Ng6 hg6 11.Rb1=) 9...Bg4?? (9...Ne5 10.Bf5 Nc4-+ (10...ef5?! 11.fe5 Ne4 12.0-0=+)) 10.Ng4+- Be7 11.Nf6 Nf6 12.0-0 0-0 13.Qf3 Ba3 14.Ba3 Qa3 15.e4 d4 16.e5 (16.Ne2!? Rfd8+-) 16...dc3 17.ef6 g6 18.Qh3 h5 (18...Qa7 19.Kh1 Qd4 20.dc3 Qf6 21.Rab1+-) 19.Qe3 cd2 20.f5 Qa7 21.Qa7 Ra7 22.fg6 fg6 23.Bg6 Ra4 24.Bh5 Rh4 (24...Rd8 25.Kf2+-) 25.g4 e5 (25...Rd8 26.Rad1 Kf8 27.Rf2 Rh5 28.gh5+-) 26.Kg2 (26.f7 Kg7+-) 26...e4 27.Kg3 Rh5 28.gh5 e3 29.Kf3 Rf6 (29...Re8 30.Ke2 Re5 31.f7 Kf8 32.Rf6 Rh5 33.Rg1 Rh2 34.Ke3+-) 30.Ke2 (30.Ke3 Rd6+-) 30...Rh6 (30...Re6 31.Rf3+-) 31.Ke3 Rh5 32.Rf2 (32...b5 33.Kd2 Rd5 34.Ke3 Re5 35.Kd3+-) 1–0. JF_ – boa, Chessworld.net, 2004.

5.e3 e5 6.Nf3 e4 7.Nd4 d5 8.Nb3 Qc7 9.Be2 (9.Rb1 Bd6=+) 9...Bd6 10.d3 0-0 (< 10...Bh2 11.g3 Bg3 12.fg3 Qg3 13.Kd2=) 11.a4 (11.de4 de4 12.Qd4 Bf5-/+) 11...b6-/+ (< 11...Bh2 12.g3 Bg3 13.fg3+=) 12.de4 de4 13.a5 ba5 14.Na5 (14.Ra5 Ra5 15.Na5 Be6-/+) 14...Bh2 (14...Rd8 15.Nc4 Ra1 16.Qa1=+) 15.Nc4=+ Ba6 (15...Ra1 16.Qa1 Bd6 17.Nd6 Qd6 18.Qa4=+) 16.Ra5 (16.g3 Rd8 17.Qb1 Bg3 18.fg3 Qg3 19.Kf1 Bc4 20.Ra8 Ng4 21.Nd1 Rd1 22.Qd1 Ne3) 16...Nbd7 (16...Rd8 17.Qa1 Kh8 18.Nd2 Rd2 19.Kd2+-) 17.Qa1 (17.g3 Bc4 18.Ra8 Ra8 19.Bc4 Bg3 20.fg3 Qg3 21.Kf1 Ra5 22.Bf7 Kf7 23.Ne4 Rf5 (23...Ne4 24.Qd7 Kg6 25.Qg7 Kf5 26.Qh7 Ke6 27.Rh6 Kd5 28.Qf7 Kc5 29.Bd4 Kb5 30.Qb7 Ka4 31.Qb3) 24.Ke2 Qg2 25.Kd3 Rd5 26.Bd4 Ne5 (26...Qe4 27.Kd2 c5 28.c4-+; < 26...Ne4 27.Qf1 Nf2 28.Ke2 Qh1 29.Qf2 Ke8 30.c4-+) 27.Kc3 Ne4 28.Kb3 Nf3-+) 17...Bb7 (17...Qb7!? 18.Ba3 Bc7-/+) 18.g3= Ne5 19.Ra8 Ra8 20.Na3 Neg4 21.Nd1 (21.Ne4 Ne4 22.Bg4 Bg3 23.0-0-+) 21...Qa5 22.Kf1 (22.Nc3 Ba6=+) 22...Qh5 (22...Ba6 23.c4 Bc8 24.Kg2=+) 23.Kg2 Bc8 (24.Bf6 Ne3 25.fe3 Qh3 26.Kf2 Qg3 27.Kf1 Bh3#) 0–1. Woschkat,Karl_Heinz – Schopf,Martin, compuserve casual, 1996.

5.e3 e5 6.Nf3 e4 7.Nd4 d5 8.f3 Bc5 (8...Bd6 9.Be2+=) 9.fe4 Bd4 (worse is 9...Ne4 10.Ne4 de4 11.Nb3+-) 10.ed4 Ne4 11.Ne4 de4 12.Qe2 (12.Bc4 Qb4 13.Bb3 Be6=) 12...Bf5 13.g3 (13.Qe3 Qd5=) 13...0-0 14.Bg2 Nd7 15.0-0 (15.Be4?? Be4 16.0-0 Bc2-+) 15...Rae8 (better is 15...Nf6=) 16.Rf5?? (better is 16.Bc3 Qd5 17.Qf2+=) 16...Qf5-/+ 17.Rf1 (17.Ba3 c5-/+) 17...Qg6 (17...Qa5 18.a3-+) 18.Rf4 Nf6 19.Qf2? Ng4 20.Qe2 h5?? 21.Be4? f5 22.Qc4+= Kh8 23.Bg2 Re1 24.Rf1 Rfe8 25.Qd3 Rf1 26.Bf1 h4! 27.Kg2 h3 28.Kg1-/+ Re1 29.Qc3?? f4 30.d3?? Qe6 31.Qd2 f3 32.d5 Qe8 (32...Qe8 33.Bd4 Qe2 34.Qh6 Nh6 35.Bg7 Kg7 36.dc6 Qf1; 32...Qe2 33.Qh6 Nh6 34.Bg7 Kg7 35.dc6 Qf1) 0–1. Fournier,Frederic (1980) – ksman(C), Active (5/0), 2004.

5.e3 e5 6.Nf3 Be7 7.Be2 0-0 8.0-0 d6 9.d3 Nbd7 10.Qd2 b5 11.a3 d5 12.Rfd1 (12.a4 b4 13.Nb1 Bd6=+) 12...Bd6-/+ 13.Nb1 (13.a4 b4 14.Nb1 Re8-/+) 13...Qc7 14.h3 Nc5 15.e4 (better is 15.Nc3!?-/+) 15...de4 16.de4 (16.Ne5 Be5 17.Be5 Qe5-/+) 16...Nce4 17.Qe3 (better is 17.Qe1-+) 17...Bc5 18.Be5 Be3 19.Bc7 Nf2 (19...Bf2?! 20.Kh2-+) 20.Rf1 Nh3 21.Kh1 (21.Kh2 Nf4 22.Nc3 Re8-+) 21...Nf2 22.Kg1 Re8 23.Rf2 Ng4 24.Bg3 Bf2 25.Bf2 Re2 26.Bc5 Rc2 27.Bb4 Rc1 28.Be1 Bf5 29.Ra2 Re8 30.Kf1 Bd3 31.Kg1 Ree1 (32.Ne1 Re1; 31...Rce1 32.Ne1 Re1) 0–1. wlittle (2175) – kasimzhanov (2000), net–chess.com, 2004.

5.Nf3 d5 6.e3 Bg4 7.Be2 Nbd7 8.0-0 Bf3 (8...e5 9.h3 Bf5 10.a3=+) 9.Bf3 (< 9.gf3 e5-/+) 9...e5 10.d4 e4 11.Bg4 (11.Be2 Bb4 12.Qd2 0-0=+) 11...Bd6 (11...Ng4 12.Qg4 Nb6 13.Qg3-/+) 12.Bd7 Kd7 13.f3 ef3 14.Qf3 Rhe8 15.Qf5 Kc7 (15...Ke7 16.Qg5 Qc7 17.Qg7 Bh2 18.Kh1=+) 16.Qg5=+ Re3?? (better is 16...Bf8=+) 17.Qe3 (better is 17.Rf6 gf6 18.Qe3 f5+-) 17...Re8 (17...Bh2 18.Kh1 Bd6+-) 18.Qg5 Qb4 19.Nd1 Ne4 (19...Qb5 20.g3 Bf8+-) 20.Qg7 1–0. fraus (2270) – rbeckett (2210), net–chess.com, 2003.

5.Nf3 e5 6.e3 e4 7.Nd4 d5 8.Be2 Bb4 9.0-0 Qc7 10.f3 ef3 11.Rf3 0-0 12.Qf1 Bd6 13.Rf6 gf6 (13...Bh2? 14.Kh1+-) 14.Qf6 Bh2 15.Kh1 Be5 16.Qg5 Bg7 17.Nc6 Qc6 18.Nd5 f6 19.Rf1 Nd7 (19...fg5?? 20.Ne7 Kh8 21.Rf8#) 20.Bf6 Nf6 21.Ne7 Kh8 22.Nc6 bc6 23.Bc4 Bd7 24.Kg1 Rae8 25.a4 Ng4 (25...h6 26.Qc5 Bg4+-) 26.a5 Ne5 27.Be2 Rf1 28.Bf1 c5 29.a6 Bc6 (29...c4 30.Be2 h6 31.Qh4+-) 30.Be2 c4 31.a7 h6 32.Qh4 Bd5 (32...Rg8 33.Kh1 (33.Bc4 Nf3 34.gf3 Bf6 35.Qg4 Rg4 36.fg4 Bd8+=) 33...Ra8 34.Qe7+-) 33.d4 cd3 34.cd3 Ba8 35.Qa4 Re7 (35...Nc6 36.Bf3 Re3+-) 36.Qa6 Bf8 (36...Rf7+-) 37.d4 Rg7 (37...Nc6 38.Qc8 Kg7 39.Qa8 Na7+-) 38.de5 Rg2 39.Kf1 Rh2 40.Qf6 (40.Qf6 Kh7 41.Qf7 Bg7 42.Bd3 Be4 43.Be4 Kh8 44.a8Q Bf8 45.Qaf8#) 1–0. Janek – Ivair, internet, 2016.

5.Nf3 g6 6.e4 (6.Ne4 Bg7+=) 6...d6= 7.Bd3 Bg7 8.0-0 0-0 9.Re1 Nbd7 10.Ne2 Nc5 11.Bc3 (11.Nc1 Qb6 12.Bd4 e5=+) 11...Qc7 (11...Qa4 12.Bd4-/+) 12.Ng3=+ White prepares the advance e5 12...Nd3 13.cd3 Be6 14.e5 (14.a4!?=+) 14...de5-/+ 15.Be5 Qd7 16.d4 (16.Qc2 Qd5-/+) 16...Rfd8 (16...Ba2 17.d3-+) 17.a4 Bd5 18.d3 Ra6 (18...Qg4 19.Bf6 Bf6 20.Ne4-/+) 19.Ne4 Rda8 (19...b6 20.Qd2-/+) 20.Nc3 (better is 20.Nc5 Qg4 21.Na6 Bf3 22.Qf3 Qf3 23.gf3 Ra6 24.Reb1+/–) 20...e6 21.Rb1 (21.Ng5 Ne8 22.Bg7 Kg7=+) 21...R8a7 (21...Bf3 22.Qf3 Nd5 23.Nd5 cd5 24.Rec1-/+) 22.h3 (22.Nd2 Ne8=+) 22...Nh5 (22...Qd8 23.Nd2-/+) 23.Nd5 ed5 24.Bg7 Kg7 25.Ne5 Nf4?? (better is 25...Qd6=+) 26.Nd7+- 1–0. DanielMena – kehrsam, ChessWorld.net, 2006.

5.g3 d5 6.Bg2 (6.Nf3!?=) 6...e5=+ 7.Nf3 Bd6 8.0-0 0-0 9.e3 e4 10.Nd4 Bg4 (10...c5!? 11.Nb3 Qb6=+) 11.f3= ef3 12.Bf3 Bh3 13.Rf2 Nbd7 14.Qe2 (14.Rb1 Rfe8=) 14...Ne5=+ 15.Bg2 Bg2 16.Rg2 Nc4 17.Rb1 Bb4 18.Nb3 Qc7 (18...Qd8 19.Rf2-/+) 19.Qf3 (19.Qd3 Nb2 20.Rb2 Qe5=+) 19...Nb2 20.Rb2 Bc3 21.dc3 Rfe8 22.Kh1 (22.c4 Qe5 23.Nd4 c5-+) 22...Qb6 (22...Ne4 23.c4 dc4 24.Nd4-+) 23.Qf4 (23.Re2-+) 23...Re4 24.Qc7?? (24.Qf5-+) 24...Qc7 (25.Nc5 Re3 26.Rb7 Qd6-+) 0–1. Lang,L – Knorr,B, corr SOK–92–92, 1992.

5.g3 e5 6.Nf3 =+.

5.Bc3 Qa4 6.Qa4 Ra4 =.

5.e3 Nf6 6.Nf3 e5 7.Be2 Be7 8.0-0 0-0 9.Qb3 Nbd7 10.d4 e4 11.Nfd2 Re8 (11...Nb6 12.Nc3 Bf5 13.a4=) 12.Nc3+= Bf8 13.Qc2 Nb6 14.Nce4 (14.a4 Be6+=) 14...Ne4= 15.Ne4 Re4?? (better is 15...Qa4 16.Qd3 Qc4 17.Qc4 Nc4 18.Bc4 Re4=) 16.Qe4+- Qd2 17.Qd3 Qb2 (17...Nc4 18.Qd2 Nd2+-) 18.Rfb1 Qa3 19.Qa3 Ra3 20.Rb6 1–0. Cernik,Lukas – Kovar,Vojtech (2105), CZE–ch /20 U18, 2000.

5.Nf3 Nd7 6.e3= Ngf6 7.Be2 e5 8.0-0 Be7 9.Nc3 0-0 10.Qc2 Re8 11.d3 Bf8 12.Nd2 Nc5 13.Nb3 Qa7 14.a4 Nb3 15.Qb3 Be6 16.a5 Nd7 17.Rfb1 Reb8 18.Qc2 Qc5 19.Ne4+= Qa7 20.Nc3 Qc5= 21.d4 ed4 22.Ne4 Qf5=+ 23.Bd3 Ne5-/+ 24.Rd1 de3 25.fe3 Nd3 26.Qd3 Rd8 27.Rf1 Qg6 28.Rf6 gf6 29.Nf6 Kh8 30.Qc3?? Bg7 31.Rf1 d5 32.Qe5 dc4 33.h4 Rd2 (34.g4 Bg4-+) 0–1. Sopur,Lech (2265) – Zawadzki,Stanislaw (2360), Poland–ch sf U20, 2003.

5.Nf3 e5 6.Bc3 Qa4 7.Qb3 =+.

6.Bc3 Qa4 =.

6.Nf3 Nd7 7.Be2 e4 8.Bc3 Qa4 9.Qa4 Ra4 10.Ng5 =.

6.Nf3 Nd7 7.Be2 e4 8.Nd4 =.

6.Nf3 Nd7 7.Be2 g6 8.0-0+= Bg7 9.Qc2 Ne7 10.d4 0-0 11.Nc3 f5 12.Rfd1 h6 13.Qb3 e4 14.Nd2 d5 15.cd5+= cd5 16.Bb5 Nf6 17.a4 Be6 18.Ba3 Rf7 19.Bb4 Qd8 20.Rdc1 g5 21.Ne2 Ng6 22.Nc3 Ng4 Black prepares f4 23.h3 Nf2? 24.Kf2+/– f4 25.Kg1 fe3 26.Nde4 Nf4 27.Nd6+- g4 28.Nf7 Qh4 29.Ne4 Bd4 30.Be1 Nh3 31.Kf1 Nf2 32.Bf2 Qh1 33.Bg1 Rf8 34.Rc7 Bf7-/+ 35.Nf6 Bf6 36.Rd1 Be6 (37.Bd7 Bd8 38.Ke2 Qg2 39.Kd3 Qe4 40.Kc3 Bf6 41.Rd4 Qd4 42.Kc2 Bd7 43.Be3 Qe4 44.Kc1 Qh1 45.Kc2 Qh2 46.Kd1 Qc7 47.Qd5 Kg7-+) 0–1. Andersson,Erik – Wesslen,Ulf, corr SSKK 2–43, 1985.

6.Nf3 Nd7 7.Be2 g6 8.0-0+= Bg7 9.Nc3 Ne7 10.Ne4 Nf5 Black gets the initiative 11.g4 d5=+ 12.cd5 cd5 13.Neg5 Qb4-/+ 14.gf5 Qb2 15.fg6 hg6 16.e4 Nc5 17.ed5 e4 18.Rb1 Qf6 19.Qc2 ef3 20.Nf3 Qd6 21.Bb5 Kf8 22.Rfe1 Bg4 (23.d4 Bd4-+) 0–1. Sternik,Ryszard – Bendig,Frank, corr SOK–91–75, 1991.

6.Nf3 Nf6 7.Nc3 Be7 8.Qc2 Bg4 9.Be2 Nbd7 10.h3 Bh5 11.0-0 d5 12.d3 0-0 13.g4 Bg6 14.Nh4 (14.g5 Ne8 15.cd5 cd5=+) 14...Nb6 15.Ng6 fg6 16.cd5 cd5 17.Qb3 Nfd7 18.d4 ed4 19.ed4 Bf6 (19...Rf4 20.Nb5 Rc8 21.Bc3=) 20.Nb5 Qa4 21.Bd1 Rfc8 22.Bc3 Qc4 23.Qc4 Nc4 24.Bf3 Ndb6 25.Bb4 Ra4 26.Rfb1 Rc6 27.Bg2 Kh8 28.a3 h6 29.Ra2 Ra8 30.a4 Rd8 31.Bc5 Nc8 32.Re2 Kh7 33.Rbe1 Rd7 34.Re8 N8b6 35.a5 Na4 36.Be7 Na5 37.Bf6 Rf6 38.g5 hg5 39.Ra1 Ra6 40.Ra4 Nc6 41.Ra6 ba6 42.Nc3 Nd4 43.Bd5 g4 44.hg4 g5 45.Ra8 Rd6 46.Bb7 Rb6 47.Ba6 Rb3 48.Ne4 Nf3 49.Kg2 Nh4 50.Kf1 Kh6 51.Bc4 Rb1 52.Ke2 Rb2 53.Kd3 Nf3 54.Ra6 g6 55.Ra7 Ne5 56.Kc3 Rf2 57.Nf2 Nc4 58.Kd4 Nd6 59.Ke5 Ne4 60.Ra2 (60...Nf2 61.Rf2 Kg7 62.Ke6 Kg8 63.Rf7 Kh8 64.Kf6 Kg8 65.Rd7 Kh8 66.Kg6 Kg8 67.Rd8#; 60.Ke4?!=; 60.Ne4?!=) 1–0. Bott,Martin – Rosemann,Hans_Joachim, BdF HS–002 remoteschach.de, 2003.

6.Nf3 Nf6 7.Be2 =.

5.Nc3 Nf6 6.d3? d5-+ 7.cd5 cd5 8.d4 Ne4 9.Rc1 Bb4 10.Qd3 Nc6 11.e3 ed4 12.ed4 Qa2 13.Qc2 Nd4 14.Bb5 Bd7 15.Bd7 Kd7 16.Qd1 Bc3 17.Rc3 Qb2 (18.Ne2 Nc3-+) 0–1. Sawamura,Tetsushi – Azuma,Noriyuki, JPN op3 email, 2001.

5.Nc3 Nf6 6.e3 Ba3 7.Ba3 Qa3 8.Nf3 d6 9.Be2 0-0 10.0-0 Bf5 11.Nh4 Be6 12.Qb3 Qb3 13.ab3 Nbd7 14.d3 c5 (14...Nc5 15.b4 Nb3 16.Ra8 Ra8 17.Nf3+=) 15.Nb5 ½–½. Morgenstern,Frank (1735) – Von Bassewitz,Ingo (1805), Blankenburg op–A, 2005.

5.Nc3 Nf6 6.e3 Bc5 7.Qc2 0-0 8.Nge2 Re8 9.Nc1 Bf8 10.Nb3 Qd8 11.Be2 d5 12.d4 (12.cd5 cd5 13.d4 Bd6=) 12...ed4 (12...dc4!? 13.Bc4 ed4=+) 13.Nd4=+ dc4 14.Bc4?? (better is 14.Rd1=) 14…Qd4-+ (15.Nd5 Qe4 16.Nf6 gf6 17.Qe4 Bb4 18.Ke2 Re4-+) 0–1. Berlacki,Piotr (1860) – Touzane,Olivier (2320), Orange op, 1994.

5.Nc3 Nf6 6.Nf3!? =+.

5.e3 f6 6.Nf3 g6 7.Be2 Ne7 8.0-0 Bg7 9.d4 e4 10.Nfd2 f5 11.Nb3 Qb6 12.Nc3 0-0 13.Qc2 Na6 14.a3 Qc7 15.Rfd1 d6 16.d5 c5 17.Nb5 Qd8 18.Bg7 Kg7 19.f3 ef3 20.Bf3 Nc7 21.Nc3 Bd7 22.a4 Na6 23.Nb5 Bb5 24.ab5 Nb4 25.Qc3 Kh6 26.e4 fe4 27.Be4 Nf5 28.Ra8 Qa8 29.g4 Nd4 30.Nd4 Rf4 31.g5 Kh5 32.Ne6 Rg4 33.Bg2 Qa2 34.Qh3 Rh4 35.Bf3 1–0. marvis (1740) – doctore78 (1620), playok.com, 2012.

5.e3 Nf6 6.Nf3 d6 7.Bc3 Qc7 8.d3 Be7 9.Be2 0-0 10.0-0 Nbd7 11.Nbd2 d5 Black intends e4 12.Qc2 c5 (12...b6 13.Bb2=+) 13.d4 (13.Bb2 d4 14.Rfb1 Rd8=+) 13...e4=+ 14.Ne5 Bd6 15.f4 ef3 16.Ndf3 Nb6 (16...Ne4 17.cd5 cd4 18.Qe4 dc3 19.Nc4=+) 17.a4 dc4 18.Nc4 (18.a5 Nbd5 19.Nc4 Ng4 20.Nd6 Qd6=+) 18...Nc4=+ 19.Bc4 Ng4 (better is 19...cd4!? 20.Bd4 Be6=) 20.Ng5+/– Do you see the mate threat? 20...Bh2 21.Kh1 g6 22.Rf7 Rf7 23.Rf1 (23.Nf7 Kf8 24.dc5 Ne3 25.Bg7 Kg7 26.Qc3 Kf8 27.Qe3+/–) 23...Bf5?? (better is 23...Bg1! 24.Bf7 Kg7 25.dc5 Kh6=) 24.Rf5!+- gf5 25.Qf5 Kg7 (25...Kf8 A) < 26.Bf7 Ra6 27.Ne6 Re6 28.Be6 Ke7 29.Qf7 Kd6 30.Qc7 Kc7+-; B) 26.Nf7 Ne3 27.Qf6 Ng4-/+ (27...Nc4 28.Nd6 Kg8 29.Nf5+-; 27...Ra4?? 28.Nd6 Qf7 29.Qf7); C) 26.Ne6 Ke7 27.Qf7 Kf7 28.Nc7 Ke7 29.Na8+-) 26.Qg4 (26.Qf7 Qf7 27.Nf7 cd4 28.Bd4 Kg6=+; 26.Bf7 Nf2 27.Qf2 Ra6 28.dc5 Kf8 29.Bg6 Bf4 30.Nh7 Ke7 31.Qh4 Kd7 32.Nf8 Kc8 33.Bf5 Kb8 34.Qf4 Qf4 35.ef4 Ra4 36.Be5 Ka7+-; < 26.Qh7 Kf8 27.Ne6 Ke7 28.Qf7 Kf7 29.Nc7 Ke7 30.Na8 Bd6+-) 26...Qg3 27.dc5 Kf8 28.Nh7!! (28...Ke7 29.Qe6 Kd8 30.Qf7 Qe3 31.Qf6 Qe7 32.Qe7 Ke7 33.Kh2+-) 1–0. Negroni,Giovanni – Bendig,Frank, corr ICCF TT–4–90, 1992.

5.e3 Nf6 6.Nf3 d6 7.Be2 Bf5 8.0-0 Be7 9.d4 e4 10.Nfd2 d5 11.Nc3 0-0 12.Qb3 Nbd7 13.a4 Qb4 14.Ba3 Qb3 15.Nb3 Ba3 16.Ra3 Nb6 17.cd5 Nbd5 18.Nd5 Nd5 19.a5 Nc3 20.Bc4 Be6 21.Be6 fe6 22.Nc5 Nb5 23.Raa1 Rf7 24.Ne4 Kf8 25.f4 Ke7 26.Ng5 Rf5 27.Nh7 Nc3 28.Ng5 Rfa5 29.Ra5 Ra5 30.Ne4 Ne4 0–1. marvis (1635) – alexmicut (1815), playok.com, 2012.

5.Nf3 e4 6.Nd4 Nf6 7.e3 d5 8.Be2 (withdrawal; 8...Nbd7 =+) 1–0. Roggensack – KD Hoffmann, corr SOK–91–73.

5.Nf3 f6 6.g3 (6.e4 Bb4=) 6...Bc5 7.e3 Ne7 8.Bg2 Qb4 9.Qb3 Ra4 (9...d5!? 10.Qb4 Bb4 11.cd5 cd5=+) 10.Nc3= Ra5 (10...Qb3 11.ab3 Ra1 12.Ba1=) 11.0-0 0-0 (11...Qb3 12.ab3 Bb4 13.d4+=) 12.d4+/– ed4 13.ed4 Bd6 14.c5 Qb3 15.ab3 Ra1 16.Ra1 Bc7 17.b4 d5 18.b5 cb5 (18...Nd7!?+=) 19.Nb5 Na6 (19...Bd8 20.Nd6 Nbc6 21.Ra8+/–) 20.Re1 (better is 20.Ra6 ba6 21.Nc7+-) 20...Kf7+/– 21.Nc7 Nc7 22.Nd2 Be6 23.Nb3 Ra8 24.Ra1 Ra1 25.Ba1 Nc6 26.Bc3 Nb5 27.Bb2 Ke7 28.Bf1 Nc7 29.Bd3 g6 30.Bc3 Bg4 31.Na5 Nd8 (31...Bf3!?=) ½–½. Grund,Karl – Diener,Rudolf, corr, 1981–83.

6.e3 Nd7 7.Nc3 Ngf6 8.Be2 g6 (8...Be7 9.0-0=) 9.0-0 Bg7 10.d3 0-0 11.Nd2 d5 12.Nb3 Qd8 13.cd5 Nd5 14.Ne4 (14.Nd5 cd5 15.d4 e4=) 14...N7b6 15.Nec5 Na4 (15...Qg5 16.a4=) 16.Na4 Ra4 17.Nd2 (17.d4 ed4 18.Nd4 Qa5=) 17...Ra8=+ 18.Nc4 Re8 (18...Qg5 19.Nd6=+) 19.a4= Nb6 20.Nd2 Be6 21.Ne4 Nd7 (21...Nd5 22.d4 Qb6 23.Rb1=) 22.Nd6 Rf8 23.Ba3 Qc7 24.Qc2 Rfd8 25.Rfb1 The backward pawn on b7 becomes a target 25...b6 26.Ne4 Nf6 27.Bf3 Ne4 28.Be4 Bd5 29.Bd5 Rd5 30.e4 Rda5 31.Bb4 R5a6 32.Bd2 Qd7 33.h3 b5 34.a5 Bf8 35.Bc3 Bd6 36.Qb2 Qe7 37.Kh1 Bc7 Increasing the pressure on the isolated pawn on a5 38.Rd1 Rd8 39.f3 f6 40.d4 Kg7 41.d5+= Qd6 42.Rac1 Ba5= 43.Ba5 Ra5 44.Rc6 Qc6 45.dc6 The passed pawn on c6 will quickly become a dangerous weapon. A pinning theme 45...Rd1 46.Kh2 Rd4? 47.c7+- Rc4 48.Qd2 Rc7 49.Qa5 Rb7 50.Qa6 Rf7 51.Qb5 g5 52.Kg3 h6 53.Qd5 Rc7 54.h4 gh4 55.Kh4 (55...Rc1 56.Kg4+-) 1–0. Stephan,Axel – Vardjavand,Varahram, JBLN West, 1993.

6.e3 e4 7.Bc3 Qh5 8.Nd4 Qd1 9.Kd1 =.

6.e3 Nf6 7.Bc3 Qa4 8.Qa4 Ra4 9.d4 =.

6.e3 Nf6 7.Be2 e4 8.Nd4 Qg5 9.g3 Na6 10.Nc3 Nc5 11.f3 ef3 12.Nf3 Qh6 13.0-0 Bh3 14.Re1 Be7 15.Bf1 0-0 16.Bh3 Qh3 17.Qe2 Rfe8 18.e4 Bd8 19.d3 (19.d4!? Ncd7 20.Rab1-/+) 19...Bb6-+ 20.Kh1 Nh5 21.Rg1 f5 22.Ng5? (better 22.Nd1 Ne4 23.de4 Bg1 24.Kg1 Re4 25.Ne3-/+) 22...Qg4 23.Qg4 (23.d4 Qg5 24.dc5 Bc5-+) 23...fg4 24.Rgd1 (24.Rgf1 Nd3 25.Rab1 Be3-+) 24...h6 25.d4 Na4 (25...hg5?! 26.dc5 Bc5 27.Rab1-+) 26.Na4 Ra4 0–1. bobagem (2385) – Panza (2505), ChessWorld.net, 2010.

6.e3 Nf6 7.Be2 e4 8.Nd4 (8.Bc3 Qa4 9.Qa4 Ra4=) 8...Qg5=+ 9.g3 Nbd7 10.f4 ef3 (10...Qa5 11.0-0=+) 11.Nf3= Qh6 (11...Qg6 12.0-0=) 12.Nc3 (12.0-0 Be7=) 12...Be7 13.Qc2 (13.Rb1 Qh3=) 13...0-0 14.Nd1 (14.0-0 Re8=) 14...Nc5 15.Nf2 d5 16.0-0 Nce4 (16...dc4 17.Bc4 b5 18.Be2=+) 17.Bd3 (17.cd5 cd5 18.Bd3 Nf2 19.Rf2 Rd8=) 17...Bh3 (17...Nf2 18.Rf2 dc4 19.Bc4=+) 18.Nh3= Qh3 19.Be4 (19.cd5 cd5 20.Qb3 Nc5=+) 19...Ne4 (19...de4 20.Ng5 Qg4 21.Bf6 Bf6 22.Rf6 Qg5=) 20.d3 Nf6 21.Ne5 (21.c5 Rfe8=) 21...Qe6 (21...Rfe8 22.cd5 Nd5 A) < 23.Rf7 Ne3 24.Qf2 Bf6 25.Rf6 gf6 26.Qe3 Qe6-/+ (26...fe5 27.Qg5 Kh8 28.Be5 Re5 29.Qe5 Kg8 30.Qg5 Kh8 31.Qf6 Kg8 32.Rf1+/–); B) 23.Qf2=+) 22.c5 (22.cd5 Nd5 (< 22...Qd5 23.a4=) 23.e4 Ne3-+) 22...Nd7 (22...Rfe8 23.Bd4=) 23.Nd7 Qd7 24.Qc3 (24.Bd4 Rfe8=) 24...f6 25.Qc2 Ra5 26.Bd4 Rfa8 27.a4 Bd8 (27...Qe6 28.Rf4=) 28.Rfb1 R5a7 29.Ra2 (29.Rb2 Be7=) 29...h6 (29...Bc7 30.Rab2=) 30.Kg2 (30.Rab2 Be7=) 30...Kh8 (30...Bc7 31.Rab2=) 31.Raa1 (31.Rab2 Be7=) 31…Kh7 (31...Qe6 32.Qb3=) ½–½. Scheller,Claus Dieter – Fransson,Jens, Schleswig Holstein–ch M, 1994.

5.Bc3 Qc7 6.g3 (6.Nf3 Ne4=) 6...d6 7.Bg2 Nbd7 8.d4 e5 9.Nh3 Be7 10.0-0 0-0 11.Qc2 b6 (11...Nb6 12.Nd2+=) 12.Ng5 Ba6 13.Nd2 h6 14.Nge4 Ne4 15.Qe4 Rac8 16.Rac1 f5 17.Qb1 e4 18.d5 (18.e3 d5=) 18...Bf6 (18...cd5 19.cd5 Qb7 20.Qb2-/+) 19.a4 (better is 19.Bf6 Nf6 20.Bh3+=) 19...Bc3-/+ 20.Rc3 cd5 21.e3 (21.Rfc1 d4 22.Ra3 d5-+) 21...dc4 22.Rfc1 Ne5 23.f4 Nd3 24.R1c2 d5 25.Bf1? Qc5 26.Bd3 Qe3 27.Kg2 ed3 28.Ra2 d4 29.Rca3 Bb7 30.Kh3 Qe2 31.Ne4 Qh5 (31...Qh5 32.Kg2 Be4 33.Kg1 d2-+) 0–1. waterslag (1965) – jbpatzer (1940), net–chess.com, 2009.

5.Nc3 d6 6.Nf3 e5 7.e4 Bg4 8.Be2 Be7 9.0-0 0-0 10.d3 Nbd7 11.h3 Bh5 12.Nd2 Bg6 13.Nb3 Qc7 14.Bc1 Ne8 15.f4 f5 16.fe5 Ne5 17.ef5 Bf5 18.d4 Nd7 19.Bf4 Bg6 20.Bd3 Bd3 21.Qd3 Nef6 22.c5 Ra3 23.Rae1 Re8 24.Re7 Re7 25.cd6 Qd8 26.de7 Qe7 27.Qc4 Kh8 28.d5 Nb6 29.d6 Qd7 30.Qe2 h6 31.Qe7 Na4 32.Na4 Ra4 33.Nc5 Qe7 34.de7 Ra2 35.Bh6 Re2 36.Bg5 b5 37.Bf6 gf6 38.Rf6 Re7 39.Rc6 Re5 40.Nd7 Rd5 41.Rb6 Rd7 42.Rb5 Kg7 43.Kh2 Kg6 44.Rb4 Rd3 45.h4 Kh5 46.g3 Rc3 47.Kh3 Rd3 48.Rb5 Kg6 49.h5 Kh6 50.Kh4 Rd1 51.Rb6 Kg7 52.g4 Rh1 53.Kg5 Rg1 54.Rb7 Kg8 55.h6 Ra1 56.Kh5 1–0. florin956 (1745) – fakejake (1645), playok.com, 2012.

5.e3 d5 6.Nf3 e6 7.Be2 Be7 8.Qc2 0-0 9.0-0 Nbd7 10.d4 b5 11.c5 Ne4 12.Nfd2 f5 13.f3 Nef6 14.a3 g5 (14...Qc7 15.Bd3=) 15.Nc3+= Rf7 16.e4 (16.a4 b4 17.Na2 Qa4+/–) 16...f4 (16...e5 17.de5 Bc5 18.Kh1 Ne5 19.ed5 cd5+/–) 17.e5+/– Nh5 18.a4 b4 19.Nb5 Qd8 (19...cb5?? 20.ab5 Qa1 21.Ba1+-) 20.Nd6 Bd6 21.cd6 Ba6 22.Ba6 Ra6 23.Nb3 Rg7 24.Qd2 Ra7 25.h3 Ng3+= 26.Rfc1 Nf8 27.Rc6+- h5 28.Rac1 g4 29.fg4 hg4 30.Rc8 Qg5? 31.Nc5+- gh3? 32.Rf8! Kh7 33.Kh2 hg2 34.Kg1?? Qh4-+ 35.Qd3 Rg6 36.Qg6 Kg6 37.Kg2 Rf7 38.Rf7 Kf7 39.d7 Ne4 40.Ne4 de4 41.Rc8 f3 42.Kf1 e3 (42...e3 43.Rf8 Kf8 44.d8Q Qd8 45.Bc3 Qh4 46.Bb4 Kf7 47.Kg1 Qg3 48.Kf1 Qf2#) 0–1. Vasut,Karel (2165) – Cerveny,Martin, MOR–chT2S, 2003.

5.e3 d5 6.Nf3 Bf5 7.Be2 e6 (7...dc4 8.Bc4 e6 9.Bf6 gf6 10.0-0+=) 8.Bf6 gf6 9.0-0 Qa4 (9...Rg8 10.cd5 Bh3 11.Ne1=) 10.Qc1 (10.Qa4 Ra4 11.cd5 ed5=) 10...Nd7 (10...dc4 11.Bc4 Rg8 12.d4=) 11.cd5 cd5 (11...ed5 12.Nd4 Bg6 13.f4+=) 12.Nd4+= Bg6 (12...Be4 13.Qc7 Qa5 14.Qb7+/–) 13.Qc7+/– Qa5 14.Qb7 Rb8 15.Qc6 Bc5 16.Nb3 Qb6 17.Qb6 Bb6 18.Nc3 Ke7 19.Rfc1 Rhc8 20.Nb5 (20.d4 Rc7+/–) 20...Nc5 21.Nc5 Bc5 22.a4 Bb4 23.d4 Ba5 24.Na7 Rc1 25.Rc1 Kd6? (better is 25...Rb2 26.Nc6 Ke8 27.Na5 Re2+/–) 26.Bb5+- Bc7 (26...Rg8 27.Nc8 Rc8 28.Rc8 Bc7+-) 27.Rc6 Kd7 28.Rb6 Kd8 (28...Ke7 29.Rb8 Bb8 30.Nc6 Kd6 31.Nb8+-) 29.Nc6 Kc8 30.Ba6 (30.Ba6 Kd7 31.Nb8 (31.Rb8?! Bb8 32.Nb8 Kc7+-) 31...Kd8 32.a5+-; 30.Nb8?! Bb6 31.Nd7 Bd8+-; 30.Rb8?! Bb8 31.Nb8 Kb8+-) 1–0. Capel,Evan Timothy (2125) – Johns,Daniel (1900), 43rd North Shore Open, 2016.

5.e3 d5 6.Nf3 Bg4 7.cd5 cd5 8.Be2 Nc6 9.0-0 e6 10.h3 Bf5 11.Nd4 Bg6 12.Nc6 bc6 13.Bf6 gf6 14.Nc3 Bd6 15.d4 Rg8 16.Qd2 Bb4 17.Rfc1 Ba3 18.Rd1 Rb8 19.Nb1 Qd2 20.Nd2 Bb2 21.a4 Ba1 22.Ra1 Kd7 23.Kf1 Rb2 24.Ke1 e5 25.Nf3 Be4 26.de5 Bf3 27.Bf3 fe5 28.a5 f5 29.a6 e4 30.Be2 Kc7 31.g4 Rgb8 32.gf5 Rb1 33.Rb1 Rb1 34.Kd2 Rb2 35.Ke1 Ra2 36.Kf1 Ra6 37.Ba6 Kd6 38.Bb7 c5 39.Ke2 Ke5 40.f3 ef3 41.Kf3 c4 42.e4 d4 43.Ba6 c3 44.Bd3 h6 45.h4 Kf6 46.Kf4 Ke7 47.e5 Kd7 1–0. carocan (1820) – skiver43 (1885), kurnik, 2012.

5.e3 d6 6.Nf3 e5 7.Be2 Be7 8.0-0 0-0 9.d3 e4 10.Nfd2 ed3 11.Bd3 d5 12.Nc3 dc4 13.Nc4 Qd8 14.h3 Nbd7 15.Bc2 Nc5 16.Qd8 Rd8 17.Rfd1 Be6 18.Rd8 Rd8 19.Ne5 Rd2 20.Rc1 Nd5 21.Nf3 Nc3 22.Nd2? (better is 22.Bc3!? Rd7 23.a4=) 22...Ne2-/+ 23.Kf1 Nc1 24.Bc1 Ba2 25.Ba3 Bf8 26.Ke2 b5 27.Nf3 Bc4 28.Kd2 Bd5 29.Ne1 g6 30.f3 Nb3 31.Bb3 Bb3 32.Bf8 Kf8 33.Kc3 Be6 34.Kb4 Ke7 35.Kc5 Kd7 (35...Bd7 36.Nd3-/+) 36.h4 (36.Nd3 Kc7 37.Ne5 b4 38.Kb4 Kd6=) 36...h5 (better is 36...Bc4!?-/+) 37.Nd3= Bd5 38.Nb4 Ke6 39.Nd5 cd5 40.Kb5 Ke5 41.Kc5 f6 42.g4 f5 (43.g5 f4 44.ef4 Kf4 45.Kd5 Kg3+-) +-. Chirica,Bogdan – Enache,Valeriu (2130), Centrocoop June op–A, 1999.

5.Nf3 d5 6.cd5 cd5 7.g3 Bf5 (7...Nc6 8.Bg2+=) 8.Nc3 (8.Bg2 Nc6=) 8...e6 (8...Nc6 9.Qb3+=) 9.Bg2 (9.Nd4 Bg6=) 9...Bd6 (9...Qb6 10.Qb3 Qb3 11.ab3 Ra1 12.Ba1+=) 10.0-0 (10.Qb3 0-0=) 10...0-0 11.d3 (11.Nd4 Nc6 12.Nf5 ef5=) 11...Rd8 (11...Rc8 12.Qb3+=) 12.Qb3= Na6 (12...Nbd7 13.Nd4 (13.Qb7?? Rdb8 14.Qc6 Rb6-+) 13...Nc5 14.Qc2=) 13.Qb5 (13.Nd4 Nc5 14.Qc2 Rac8=) 13...Qb4 (13...Nc5 14.Rfc1=) 14.Qb4 Bb4 15.Nh4 (15.Nb5 Rdc8+=) 15...Bg6 (15...Bg4 16.Nf3=) 16.Ng6+= fg6 (16...hg6 17.Rfc1=) 17.Rfd1 Rf8 (17...Be7 18.Rdc1+=) 18.e4 (18.Nb5 Rfc8+=) 18...d4 (18...Nc5!? 19.ed5 Ng4+=) 19.Nb5+/– Ng4 (better is 19...e5!?+/–) 20.Bd4+- e5 21.Be3 (better is 21.h3!?+-) 21...Ne3 (21...Be7 22.Bh3 Ne3 23.fe3+=) 22.fe3+/– Rac8 23.a3 Be7 24.Rac1 (better is 24.d4!?+/–) 24...Bg5= 25.Rc8 Rc8 (25...Be3 26.Kh1 Rc8 27.Bh3=) 26.Re1 (26.Kf2 Rc2 27.Kf3 Be3 28.Ke3 Rg2+=) 26...Rc2 (26...Rc1 27.Rc1 Be3 28.Kf1 Bc1 29.Ke2=) 27.d4+= Rc1 28.Rc1 (28.Kf2 Re1 29.Ke1 Be3+=) 28...Be3 29.Kf1 Bc1 30.de5 (30.d5 Nc5+=) 30...Nc5= 31.e6 Ne6 32.e5 Kf7 (32...Nc5 33.a4=) 33.Bb7+= Bb2 (33...Nc5 34.Bd5 Kf8 35.Ke2+=) 34.a4 Be5 35.a5 Nc5? (better is 35...Nd4 36.Na3 Ke6+=) 36.a6+- Bb8 (36...Na6 37.Ba6 h5 38.Na3+-) 37.a7 Ba7 38.Bd5 Kf6 39.Na7 Ke5 40.Bg8 h6 41.Bf7 g5 ½–½. Biran,Anastasija – Khamenya,Vitalia, Batumi GEO, 2014.

5.Nf3 d5 6.cd5 Qd5 7.a4 Na6 8.g3 g6 (8...Bg4 9.Nc3 Qa5 10.Bg2=+) 9.Nc3 Qd8 (9...Qe6 10.Bg2=) 10.Bg2 Bg7 11.0-0 0-0 12.h3 Nc5 13.Qc2 Be6 14.Ra3 Bf5 15.d3 Nd3 16.g4 (better is 16.ed3!? Bd3 17.Qd1 Bf1 18.Qf1=) 16...Nb2-/+ 17.gf5 Nc4 18.Rb3 Qc7 19.Rfb1 Na5 20.Rb4 Rfd8 21.fg6 fg6 22.Nd4 Qe5 (22...Qd6 23.e3-/+) 23.e3 (better is 23.Nb3=+) 23...Qc5?? (23...e6 24.R4b2-/+) 24.Ne4?? (24.Ne6 Qh5 25.Nd8 Rd8 26.Qa2 Nd5 27.Nd5 cd5 28.Rb5+-) 24...Qc2-/+ 25.Nc2? (better is 25.Nf6!? Bf6 26.Nc2-+) 25...Nd5-+ (26.Rb7 Nb7 27.Rb7 Ra4-+) 0–1. Roever – Gorzel, corr SOK–89–34, 1989.

5.Nf3 d5 6.e3 Bg4 7.cd5 Nd5 8.Be2 f6 9.Nc3 e5 10.Qb3 Bb4 11.Nd5 cd5 12.0-0 e4 13.Nd4 Bd7 (better is 13...Be2!? 14.Ne2 Nd7=) 14.a3 Bd6 (14...Bd2 15.Qb7 Qa4 16.Rad1+-) 15.Qb7 (better is 15.Bc3 Qc7 16.Qd5 Bh2 17.Kh1+/–) 15...0-0?? (better is 15...Ra7 16.Qb3 Qc7+/–) 16.Bc3 (better is 16.Nb3!? Qa4 17.Qd5 Rf7+-) 16...Ra7 17.Qb3 (17.Ba5?! Rb7 18.Rfc1 Rc8 19.Rc8 Bc8+/–) 17...Qc7 18.Qd5 Kh8 19.h3 f5 20.Bb5 (20...Ra3 21.Ra3 Ba3 22.f3 ef3 23.Bd7 (23.Nf3?! Bb5 24.Qb5 Nc6+/–) 23...Qd7 24.Qd7 Nd7 25.Rf3+-; 20.Bb4 Bb4 21.ab4 Ra1 22.Ra1 Qb6+-) 1–0. Sternik,Ryszard – Bedbur,Heinz, corr SOK–90–57, 1990.

5.Nf3 d6 6.e3 Nbd7 7.Be2 g6 8.0-0 Bg7 9.d4 0-0 10.Nbd2 e5 11.Qc2 Re8 12.Nb3 Qc7 13.a4 ed4 14.Nfd4 Ne4 15.Ra2 Nec5 16.Rfa1 Na6 17.Qd2 Ndc5 18.Bf3 Qb6 19.Nc1 h5 20.h3 Qb4 21.Qe2 Qb6 22.a5 Qc7 23.Bc3 Bf5 24.Qb2 Qd7 25.Nf5 Bc3 26.Nh6 Kh7 27.Qc3 Kh6 28.Ne2 Qe7 29.Rd2 Qe5 30.Rad1 Qc3 31.Nc3 Nb4 32.Rb1 Nbd3 33.Be2 Ne5 34.Rd6 Ra5 35.Rbd1 Re7 36.Bf1 Kg7 37.f4 Ned7 38.e4 Nb6 39.e5 Ra3 40.Nd5 Nd5 41.cd5 cd5 42.R6d5 Ne6 43.Rd7 Kf8 44.Re7 Ke7 45.Rb1 Nf4 ½–½. Dzieniszewski – Piersig, Potsdam 1986.

5.Nf3 d6 6.e3 Bg4 7.Be2 e5 8.0-0 Be7 9.h3 Bh5 10.d4 e4 11.Nfd2 Be2 12.Qe2 0-0 13.Nc3 d5 14.cd5 cd5 15.a4 Nc6 16.Nb5 Nb4 17.Nb3 Qd8 18.Ba3 Nd3 19.Be7 Qe7 20.f4 Qb4 21.Rfb1 Ra4 22.Ra4 Qa4 23.Nc5 Qa8 24.Nd3 ed3 25.Qd3 Ne4 26.Kh2 Qa2 27.Rf1 Rc8 28.Qb1 Qe2 29.Qe1 Qb5 30.Qh4 g6 31.f5 Qf1 32.fg6 hg6 33.Qe7 1–0. marvis (1730) – fakejake, playok.com, 2012.

5.Nf3 g6 6.Bc3 Qc7 7.e4 (7.e3 Bg7=) 7...Bg7 8.Qe2 0-0 9.e5 Ne8 10.h4 d6 11.h5 Bg4 12.hg6 fg6 13.c5 Bf3 14.gf3 Be5 (14...Nd7 15.Qc4 d5 16.Qh4 Ne5 17.Qh7 Kf7 18.Be2=) 15.d4 Bf6 16.Qe6 Kg7 17.Qh3 Rh8 18.Bc4 d5 19.Qh6 (19.Bd3 Qf4 20.Bg6 Kf8+= (20...Kg6? 21.Qh5 Kg7 22.Bd2 Qd2 23.Nd2+-)) 19...Kg8 (19...Kf7 20.Bd3=+) 20.Bd3 Bg7 (better is 20...e5!? 21.de5 Be5-/+) 21.Qe3+= Nf6 22.f4 Kf7 23.f5 Qd7 24.Qf4 Na6 25.Rg1 gf5 26.Bf5 e6 27.Bd3 Rag8 28.Rh1 Ke7 (28...Ke8 29.f3+/–) 29.Nd2 Qc7 30.Qe3 (30.Qh4 Kd7+=) 30...h5 (30...Ng4 31.Qf3 h5=+) 31.Nf3 Ng4 32.Qd2 Bh6 (32...Rf8 33.Rh3+/–) 33.Qe2 Qf4 (33...Bf4 34.a3+/– (< 34.Ba6 ba6 35.a4 Qb7=)) 34.Rh3 (34.a3 Bg7 35.Bd2 Qf7+/–) 34...Nc7 35.Bd2 (35.a3 Kd8+/–) 35...Qf6 36.Ba5 (36.Bh6 Rh6 37.a3 Kd7+=) 36...Ne8 (36...Bf4 37.Rb1+/–) 37.Qb2 (37.Rb1 Bf4 38.Bc3 Kd7 39.Rb7 Nc7+/–) 37...Kf8 38.a3 (< 38.Qb7 e5 39.Qc8 e4=+) 38...Bf4 39.Bc3 (39.Qb7 e5 40.Qd7 e4-+) 39...Qf7 40.Bd2 Bd2 41.Qd2 Nef6 42.Ng5 (42.Qe2 Ne4 43.Be4 de4 44.Qe4 Qf5 45.Qf5 ef5+/–) 42...Rg5= 43.Qg5 Ne4 44.Qh4 Nef2 (44...Qf2? 45.Qf2 Ngf2 46.Rf3 Ke7 47.Rf2 Nf2 48.Kf2+-) 45.Rg3 Nd3 (better is 45...Ke8 46.Be2 Qf4=+) 46.Kd2?? (46.Rd3 e5=) 46...Qf2 (46...Qf4 47.Kc3 Nc5 48.dc5 Qe5 49.Kb3 Qa1 50.Qd8 Kg7 51.Qe7 Kh6 52.Qe6 Qf6 53.Qe2-+) 47.Kc3?? (47.Kd3 e5 48.Rg4 e4 49.Re4 de4 50.Qe4 Rg8-/+) 47...Qb2 (better is 47...Nf4 48.Kb3 Ke8-+) 48.Kd3= Qa1 (49.Qd8 Kg7 50.Qd7 Kh6 51.Qe6 Kg7 52.Qe7 Kg6 53.Qe6 Kh7 54.Qf7 Kh6 55.Qe6 Kg5 56.Qe7 Kf5 57.Qf7 Kg5 58.Qe7 Kf4 59.Qc7 Kg5 60.Qe7=; 48...Ke8 49.Rg4 Qa1 50.Rg7 Qd1 51.Kc3 Qc1 52.Kb3 Qc4 53.Kb2 Qe2 54.Kc3 Qc4 55.Kb2 Qb5 56.Ka1 Qf1 57.Kb2 Qb5 58.Ka1 Qf1 59.Kb2 Qb5=) =. Trokenheim,Marek – guest831, ICC, 2004.

5.Qc1 d5 6.c4 dc4 7.Bc4 Nf6 8.Nf3 Bg4 9.Ne5 Bh5 10.0-0 e6 11.d4 Nbd7 12.Nd7 Nd7 13.Nd2 Bg6 14.e4 Bd6 15.Re1 0-0 16.Rb1 Qc7 17.h3 Bf4 18.a3 Nf6 19.Bd3 Qa5 20.Bc3 Qa3 21.Qc2 Rfb8 22.Nc4 Qe7 23.Nb6 Ra7 24.g3 Bc7 25.Bb4 Qd8 26.Bc5 Ra5 27.Qc3 Rb5 28.Bb5 Ne4 29.Re4 cb5 30.Re6 Bb1 31.Re1 Bb6 32.Bb6 Qb6 33.Qe3 Qc6 34.Rb1 Rd8 35.Qe5 h6 36.Qb5 Rd4 37.Qc6 bc6 38.Rc1 Rd6 39.f4 Kf8 40.Kf2 Ke7 41.Rc5 Kd7 42.Ra5 g6 43.g4 Rd2 44.Kf3 Rd3 45.Kg2 Ke6 46.Ra8 h5 47.Re8 Kd7 48.Rf8 hg4 49.hg4 Ke7 50.Rc8 Rd6 0–1. Malmstroem – Thystrup, corr 3GMM½–09 1997–99.

5.Qc1 Nf6 6.d4 d5 7.a4 (7.c4 Bf5=) 7...Ne4=+ 8.Nf3 Bg4 9.Be2 Bf3 (9...Qa5 10.c3=+) 10.Bf3= Qa5 11.c3 Nd7 12.0-0 Ndf6 13.Qc2 e6 14.Nd2 Nd2 15.Qd2 Bd6 16.Bc1 (16.Ba3 A) 16...Qa4? A1) 17.Bd6? Qa1 18.e4 Qa5-+ (worse 18...Ne4 19.Be4 h6 20.Bc2+=); A2) 17.Bb2+-; B) 16...Ba3 17.Ra3 b6=) 16...Qc7=+ 17.Be2 (better 17.h3!?=+) 17...Bh2 18.Kh1 h5 19.c4 dc4 20.Bc4 Bd6 21.Be2 (21.Qc2 Qe7 22.Be2 Ng4-+) 21...Qe7 22.Bf3?? (better 22.Qc2-+) 22...Ne4!! 23.Qe2 (23.Be4 Qh4 Mate attack) 23...Qh4 24.Kg1 Qh2 0-1. ThePurplePawn - universe64 (2300), lichess.org, 2019.

5.Bd4 c5 6.Bc3 Nc6 7.Bc4 e5 (7...e6 8.a4=) 8.Qh5 (8.Nf3 d6=) 8...Nh6= 9.Be5 (better 9.Nf3 d6 10.Ng5=) 9...Ne5?? (9...Nb4 10.Kd1 d6 11.Qh6 gh6 12.Bh8 d5-+) 10.Qe5+- Kd8 11.Qf4?? (11.Nf3 Ra4 12.d3 d6+-) 11...Qf6 (better 11...Qb2 12.Ne2 Qa1-+) 12.Qf6+- gf6 13.Nc3 Bg7 (13...Rg8 14.Bd5 d6+-) 14.Ne4 (better 14.Rb1!?+-) 14...f5+- 15.Nd6?? (better 15.Nc3+-) 15...Ba1-+ 16.Bf7 (16.Nf3 Kc7 17.Nb5 Kc6-+) 16...Rf8 (better 16...Ra6-+) 17.Bd5 (17.Bc4 Kc7 18.Nc8 Rfc8-+) 17...Rb8 (17...Rf6!? 18.Nc8 Kc8 19.Nf3-+) 18.Nf3 f4 (18...Ke7!? 19.Nc8 Rfc8 20.a4-+) 19.Ne5?? (better 19.Ng5-+) 19…Be5 (19...Be5 20.Nc8 Kc8-+) 0–1. Hojjat_3 (1785) – Kabatana_Michael (1780), lichess.org, 2019.

5.c4 dc4 6.Bc4 b5 (6...Nf6 7.Nf3=) 7.Bb3 e6 8.a4 Bb7 (8...b4 9.Nf3+=) 9.ab5 Qb5 10.Ra8 Ba8 11.Nf3 Nd7 (11...Qb4 12.Ne5+=) 12.Nc3 (12.Qc2 Nc5 13.Bc4 Qa4+=) 12...Qb4 13.Qa1 (13.Qc2 Nc5 14.Nd4 e5 15.Bf7 Kf7-+) 13...Bb7 14.Bc2 (14.Bd1 Ngf6+=) ½–½. Woschkat,Karl_Heinz – Schulz,Manfred, frechess., 2001.

5.c4 e6 6.cd5 ed5 7.Nf3 Nf6 8.Nc3 (8.Bf6 gf6 9.Bd3 Nd7=) 8...Be7 9.Be2 0-0 10.0-0 Be6 11.Nd4 Nbd7 12.Ne6 fe6 13.f4 e5 (13...b5 14.Bg4 Kf7 15.Bh5 g6 16.Be2=) 14.fe5= Ne5 15.Nb5 cb5 (15...Nc4!? 16.Bc4 dc4=+) 16.Be5+= Rae8 17.Qb3 Attacks the isolani on b5 (17.Bd3+-) 17...Qa4 (better 17...Qd2!? 18.Bb5 Bc5 19.Be8 Re8+=) 18.Bb5+- Qe4 (better 18...Qb3!? 19.ab3 Ra8+-) 19.Be8+- Re8 (19...Qe5 20.d4 Qe4+-) 20.Bf6 Bf6 21.Rac1 h6 Black prepares the advance d4 (21...Qe6 22.Qb7 d4 23.ed4 Qa2 24.Rc8 Rc8 25.Qc8 Kf7 26.Qd7 Kg6 27.Qf5 Kh6 28.h4+-) 22.Rc7 Kh8 (22...b6 23.Rb7+- (23.Qb6?! Bd8+-)) 23.Qb7 d4 24.Qe4 de3 (24...Re4 25.Rf4 Re6 26.ed4 Ra6+-) 25.Qe8 Kh7 1–0. RichardSommer (2135) – Burdur (2175), lichess.org, 2020.

5.c4 e6 6.Nf3 Nd7 7.Be2 Ngf6 8.0-0 Bd6 9.d4 Qc7 10.Nbd2 0-0 11.Qc2 Re8 12.Rfd1 Qa5 13.Nb3 Qa4 14.c5 Bc7 15.Ne5 Ne5 16.de5 Nd7 17.Rd4 Qa7 18.Rh4 g6 19.e4 Be5 20.Be5 Ne5 21.Qd2 Nd7 22.Qh6 Nf8 (worse is 22...Nc5 23.Qh7 Kf8 24.Rf4+/–) 23.e5 b6 24.Nd4? (better is 24.Qc1=) 24...bc5-+ 25.Nf3 (25.Nc6?? Qb6-+) 25...Qc7 26.h3 Ba6 27.Ba6 Ra6 28.Re1 Ra2 29.Ng5 Qa5 30.Re3 Qd2 31.Rf4 Qd1 32.Kh2 Qh5 33.Qh5 gh5 34.Nf7 Ng6 35.Rf6 c4 36.Ng5 Nf8 37.Rg3 h4 38.Rg4 h5 39.Rh4 c3 40.Rh5?? (40.Rf3 c2 41.Rc3-+) 40...c2 41.Nf7 c1Q 42.f4 Qc2 43.Rg5-/+ Ng6! 44.f5 Kf8 45.Nd6 Ke7 46.Rgg6 Rh8?? 47.Rg7 Kd8 48.Nf7 Kc8?? 49.Nh8+- Qc5 50.Ng6 Rg2 51.Kg2 Qc2 52.Kg3 Qd3 53.Kg4 Qe2 54.Kg5 Qe3 55.Nf4 Qg3 56.Kh6 Qf4 57.Kh7 (57.Kh7 Qf5 58.Rf5 ef5 59.Kg6+-) 1–0. Bolbat,M (2150) – Mazyrin,Yuri, Cheliabinsk Region–ch, 2008.

5.c4 Bf5 6.Qb3 Nd7 7.Bc3 (7.cd5 Qd5 8.Qd5 cd5=) 7...Qb6+= 8.Qb6 (8.Qd1 Ngf6+=) 8...Nb6 9.Bd4 (9.d3!?+=) 9...Nc4-/+ 10.d3 Na3 11.Na3 Ra3 12.Bc5 (12.Nf3 e6-/+) 12...Ra4 (12...Ra5 13.d4-/+) 13.Nf3 Nf6 14.Nd4 (14.h3 e6 15.Bf8 Rf8-/+) 14...Bg6-+ 15.Nb3 (15.f4 Nd7 16.Nb3 b6-+) 15...Nd7 16.Bd4 (16.f4 b6 17.Bd4 f6-+) 16...e5 17.Bc3 Bd6 18.Be2 (18.h4 h5-+) 18...Ke7 19.0-0 (19.Nc1 b5-+) 19...Rha8 20.Nc1 f6 (20...Ba3 21.d4-+) 21.g3 (21.Bd1 Ra3 22.Bb2 R3a7-+) 21...Ba3 22.Nb3 Nc5 23.Rfd1 R4a7 24.Nc5 Bc5 25.Rd2 d4 26.ed4 ed4 27.Bb2 Ra2 28.Ra2 Ra2 29.Bd1 Kd6 30.Bb3 Ra8 31.Kg2 b5 32.Rd1 Bb6 33.Bc1 c5 34.Bf4 Kc6 35.Re1 Re8 36.Re8 Be8 37.Kf1 Bh5 38.h3 Bf3 39.g4 h6 40.Be6 g5 41.Bb8 Bc7 42.Bc7 Kc7 43.Bb3 Kb6 44.Ke1 Ka5 (44...Ka5 45.Bg8 Bg2-+) 0–1. Sayder,Hans Joachim – Boettcher,Patrick (1940), Berlin, 2005.

5.c4 Bf5 6.cd5 Qd5 7.Nc3 Qd8 (7...Qa5 8.Nf3=) 8.Nf3 e6 (8...Nf6 9.Qb3 Nbd7 10.d4= (worse is 10.Qb7 Rb8 11.Qa6 Rb2-+)) 9.Bc4 (9.Be2 Nf6=) 9...Nf6 (9...b5 10.Be2+=) 10.0-0 (10.a4 Nbd7=) 10...b5 11.Be2 Be7 (11...b4 12.Nb1=) 12.d4 (12.d3 0-0=) 12...h6 (12...b4 13.Nb1=) 13.Bd3 (13.a4 b4 14.Nb1 0-0+=) 13...Bd3 (13...b4 14.Ne2=) 14.Qd3 0-0 15.Ne5 (15.a4 b4 16.Ne4 Ne4 17.Qe4 Qd5=) 15...Bd6 16.f4 Qb6 (16...b4 17.Ne2=) 17.a4+= b4 18.Nc4 Qc7 19.Ne2 Be7 (19...c5 20.dc5 Be7 21.a5=) 20.e4 (20.a5 Rd8+=) 20...Rd8 (20...c5 21.f5=) 21.e5 Ne8 (21...Nd5 22.f5 ef5 23.Qf5+=) 22.f5+/– ef5 (22...c5 23.fe6 fe6 24.Qg6 cd4 25.Qe6 Kh8 26.Bd4+- (26.Nd4?! Ra6 27.Qf7 Bc5+=)) 23.Qf5 (23.Rf5 Bg5+/–) 23...Bf8 (23...Bg5 24.a5+/–) 24.Nf4 Qe7 25.e6 Nd6 (25...Nf6!?+/–) 26.ef7+- Nf7 27.Rae1 Qa7 (27...Qg5 28.Qc2+-) 28.Ng6 (28.Ng6 Rd4 29.Bd4 Qd4 30.Rf2+-) 1–0. Kern – Hansen, (year?).

5.Be2 Qb6 6.Bc3 Nf6 7.Bf6 ef6 8.Nf3 Bf5 9.Nc3 Bd6 10.0-0 0-0 11.Nh4 Be6 12.Bd3 Be5 13.Qh5 g6 14.Ng6? (better is 14.Qh6+=) 14...fg6-+ (14...hg6?! 15.Bg6 Rd8 16.Rfb1-/+) 15.Bg6 Qc7 (15...hg6?! 16.Qg6 Kh8 17.Qh6 Kg8 18.Qg6 Kh8 19.Qh6 Kg8 20.Qg6=) 16.Bd3 Ra3 17.f4 Bc3 18.dc3 Qe7 (worse is 18...Rc3 19.f5 Bd7 20.Qg4 Kf7 21.Qh5 Ke7 22.Qh7 Rf7 23.Qg8-/+) 19.Rf3 Rc3 20.Rh3?? (better is 20.a4-+) 20...Bh3 21.Qh3 Ra3 22.Re1 Kh8 23.e4 Ra2 24.Kf1 Ra4 25.Qf5 Re8 26.e5 (26.g3 Nd7 27.c3 de4-+) 26...Nd7 27.Re3 (27.e6 Nc5-+) 27...fe5 28.fe5 Rf8 (28...Rf8 29.g3 Rf5 30.Bf5 Ne5-+) 0–1. DKCozy – Bauernopfer, playchess.de, 2001.

5.Be2 Bf5 6.Nf3 Nd7 7.0-0 e6 8.c4 (8.Nd4 Nh6=) 8...Ngf6 9.Nc3 (9.d3 Bd6=) 9...dc4=+ 10.Bc4 b5 11.Bb3 Bd3 (11...b4 12.Ne2=+) 12.Re1 Bd6 13.Bc2 Nc5 14.Qb1 Qd8 15.Ne2 0-0 16.Bf6 gf6 17.Ned4= Bc2 18.Qc2 Ra3 19.Nc6+= Qc7 20.Ncd4 Bh2?? 21.Nh2+- (21…b4 22.Nb5+-) 1–0. Houdek – Hanison,Bernard, corr 3GMM–17, 1995.

5.Nf3 b5 =.

5.Nf3 b6 6.Bc3 Qa7 =.

5.Nf3 b6 6.Be2 Ba6 7.0-0 Be2 8.Qe2 Nf6 (8...e6 9.d3=) 9.Bf6+= ef6 10.d4 (10.e4 Kd8+=) 10...Bd6 (10...Qa6 11.Qd1=) 11.Nbd2 (11.c4 dc4 12.Qc4 0-0=) 11...Qc3 (better is 11...0-0=) 12.Rad1 (better is 12.e4!? 0-0 13.ed5 cd5 14.Qb5=) 12...Ra2 (12...Qc2 13.Rb1 Ra6 14.e4-/+) 13.e4 (13.Rb1 Bc7-/+) 13...0-0 14.ed5 cd5 Black is in command. 15.Qb5 Rc2 (15...Qc6 16.Qc6 Nc6 17.c4-/+) 16.Qb6 (16.Qd5!? Qc6 17.Qc6 Nc6 18.Ne4=+) 16...Bf4 (16...Nc6 17.Nb1 Qb4 18.Qb4 Nb4 19.Na3-/+) 17.Nb3 Qc6 18.Qb4 (18.Qa5 Bc7 19.Qa1 Nd7-/+) 18...Na6 19.Qa3 Bd6 20.Nc5 (20.Qa1 Ra8-/+) 20...Nc5–+ 21.dc5 Rc5 22.Qe3 (22.Rfe1 Rc8–+) 22...Re8 23.Qb3 (23.Qd3 Qb5–+) 23...Re4 (23...Be5 24.Rfe1–+) 24.Nd4 Qc7 25.Nb5 (better is 25.Nf3 Rec4 26.Rfe1–+) 25...Bh2 26.Kh1 Qe5 27.Nc3? (27.g3 Qh5 28.Kg2–+) 27...Qh5 (27...Rh4 28.Rfe1 Rc3 29.Qc3 Bf4 30.Kg1=) 28.Ne4 (28.g3 Bg3 29.Kg2 Qh2 30.Kf3 Rf4 31.Ke2 Rf2 32.Kd3–+) 28…Bg3 (29.Kg1 Qh2) 0–1. badboy1221 – laisla16, Live Game Caissa's Web, 2006.

5.Nf3 Nd7 6.Be2 f6 7.0-0 (7.Bc3 Qc7=) 7...e5 8.c4 Bd6 (8...dc4 9.Bc4 Nb6 10.Bc3=) 9.cd5 cd5 10.Nc3 Ne7 11.Nb5 Bb8 12.Ba3 Nb6 13.Qb3 Be6 (13...Nf5 14.Rfc1=) 14.Nd6+= Bd6 15.Bd6 Nec8 16.Bb4 (16.Bc7 Qc5 17.Bb6 Qb6 18.Qb6 Nb6+/–) 16...Qa4+= 17.Qa4 (17.d4 e4 18.Nd2 Qb3 19.ab3 Ra1 20.Ra1 h5+/–) 17...Na4 18.Rfc1 (18.d4 e4 19.Nd2 Ne7+=) 18...Kd8 19.h3 (19.d4 e4 20.Nd2 Nb2+=) 19...Nab6 (19...Nb2 20.a3+=) 20.a3 (20.d4 e4 21.Nd2 Na4+=) 20...Re8 (20...Kd7 21.d4 e4 22.Bb5 Kd8 23.Nd2+=) 21.d3 (21.d4 Nd7+=) 21...Bd7 22.Nd2 Bc6 23.Nb3 Na4 24.d4 e4 25.Na5 Kd7 26.Bg4 Kc7 27.Rc2 Kb6? 28.Nc6+- bc6 29.Bd7 Rd8 1–0. Wall,Bill – Vyoga, chess.com, 2010.

5.Nf3 Bf5 6.c4 e6 7.cd5 ed5 8.Be2 h6 9.0-0 Nd7 10.Nd4 Bh7 11.Nc3 Ngf6 12.Nf3 (12.f4 Be7=) 12...Be7 13.Rb1? (13.d3 0-0=) 13...0-0 (better 13...Bb1 14.Qb1 b5-+) 14.Na4?? (14.d3 b5 15.Ra1 Bd6=+) 14...Qc7 (better 14...Bb1 15.Qb1 Qa4 16.Bf6 Bf6 (worse 16...gf6 17.Qb7 Ra7 18.Bd1-+) 17.Qb7 Nc5-+) 15.Qc2?? (better 15.Rc1=+) 15…Bc2-+ (15...Bc2 16.Nc3 Bb1 17.Rb1 Ne4-+) 0-1. cucosant2 - Brunetticus (2210), Casual Bullet game, lichess.org, 2020.

6.Qc2 Nbd7 7.Nf3 e6 8.Be2 Bd6 9.Nc3 (9.0-0 dc4 10.Bc4 e5=) 9...0-0=+ 10.0-0 Nc5 (10...dc4 11.Bc4 Qh5 12.d4=) 11.h3 (11.d4 Ncd7=) 11...Bd7 (11...dc4 12.Bc4 b5 13.Bb3=) 12.Nd4 (12.d4 Na6+=) 12...Nfe4 (12...dc4 13.Bc4 b5 14.Nb3=+) 13.Nb3= Qa7 (13...Nb3 14.ab3 Nc3 15.Bc3=) 14.Nc5+= Nc5 15.a4 (15.d4 Na4=) 15...f5 (15...dc4 16.Bc4 e5 17.f4+=) 16.Ba3 Qb8 (16...b6 17.d4 Ne4 18.Rfb1+=) 17.Bc5 (17.d4 Ne4+=) 17...Bc5 18.cd5 cd5 19.Nd5 b6 (19...Rc8 20.Nc3+=) 20.Nc3+- Rf6 (20...Rc8 21.Qb3+-) 21.Bf3 1–0. Barbarickiy,Yuri (1970) – Abramov,Ilya (1705), Salekhard Russia, City Championship, 2015.

6.cd5 cd5 7.Qb3 Nc6 8.Nf3 e6 9.Be2 Be7 10.Nc3 (10.0-0 0-0=) 10...0-0 11.0-0 Nd7 (11...Rd8 12.d4=) 12.d4 f5 13.Nb5 Qd8 14.a4 Nb6 15.Rfc1 Na5 16.Qd1 Nac4 17.Bc3 Bd7 18.Ne5 (18.Qb3 Bb5 19.ab5 Ra1 20.Ra1 Qc7=) 18...Bb5 (18...Na4 19.Bc4 (worse 19.Nc4 Bb5 20.Ba5 Qe8-/+) 19...dc4 20.Rab1=) 19.ab5 Na3 (19...Ra1!? 20.Ba1 Ba3+=) 20.Qb3+- Bd6 (20...Qd6+-) 21.Nd3 (21.Bb4 Qe7 22.Bc5 Bc5 23.dc5+- (23.Rc5?! Nac4 24.Ra8 Ra8 25.Nc4 Ra1 26.Bf1 Nc4+=)) 21...Qe7 Black prepares f4 22.g3 g5 Black plans f4 (22...Rfc8 23.Nb2=) 23.Nc5 (23.Ne5 g4+=) 23...Nac4= (worse 23...Bc5 24.dc5 Nbc4 25.Bb2 Nb2 26.Qb2+- (26.Ra3?! Nc4 27.Ra8 Ra8+=)) 24.Na4 f4 25.Nb6 Nb6 26.Ra8 Ra8 27.ef4 gf4 28.Bb2 Rf8 29.Qf3 fg3 30.Qg4 Kh8 31.hg3 Qf7 32.Rf1 Nd7 33.Qh5 Qe7 34.Bd3 Nf6 35.Qe2 Qg7 36.Kg2 (worse 36.Qe6 Bg3 37.Qh3 Bh4 38.Kh1 Qg4=+) 36...Rg8 37.Rh1 (37.Rg1 Qf7+=) 37...Re8 (37...Bg3!? 38.Kf1 Bc7 39.Qe6 Re8 40.Rh7 Qh7 41.Qf6 Qg7 42.Qh4 Kg8=) 38.Bc1 Re7 (38...e5!?+=) 39.Bh6+- Qg8 40.f4 Qg4?? (better 40...Nd7+-) 41.Qg4+- Ng4 42.Bg5 (42.Bf8!? Ne3 43.Kf2 Nf5 44.Be7 Ne7 45.Rh7 Kg8+-) 42...Rc7 43.Kf3 Rc3 44.Rh7 Kg8 45.Rb7 Nh2 (45...Rd3 46.Kg4 Rd4 47.Rb6+-) 46.Ke2 Nf1 (46...Ra3 47.Bh7 Kf8+-) 47.Bh7 (47.Bh7 Kf8 48.Kf1 Rg3 49.Kf2+-) 1–0. Biberger,Hans (1860) – Seyffer,Guenther (1865), 2rd Bayern–ch Seniors, 2010.

6.Nf3 Nbd7 7.Be2 =.

6.Nf3 e6 7.Nc3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.a4 Qc7 11.Nd4 Re8 12.cd5 ed5 13.Qb3 Nc5 14.Qc2 Bf8 15.Rfc1 h6 16.Nb3 Nb3 17.Qb3 Be6 (17...Ra5 18.d3=) 18.Qc2 (18.Nb5 Qe7 19.Bf6 gf6+= (19...Qf6? 20.Nc7+-)) 18...Qd7 (18...Bd6 19.h3=+) 19.Bf3 (19.Nd1 Be7=) 19...Bd6=+ 20.d4 Bc7 21.Ba3 Bd6 (21...Bf5 22.Qb3=+) 22.Bd6= Qd6 23.Ne2 Qd7 24.Ng3 Reb8 25.Nh5 Nh5 26.Bh5 Bf5 27.Qc5 Ra7?? (27...Qd8 28.a5=) 28.Bf3 (better 28.Qa7 Qc8 29.Ra2+-) 28...Rba8= Attacking the isolated pawn on a4 29.a5 Qc7 30.Bd5 Ra5 31.Ra5 Ra5 32.Qc3?? (better 32.Qc4=) 32...Rd5-+ 33.f3 Rd8 34.e4 Be6 35.d5 (35.Rd1 Qd6-+) 35...Bc8 (better 35...Qb6 36.Kh1 cd5 37.Qe1-+) 36.dc6 bc6 37.Qc6 (37.Qe3 Qe5 38.Qc3 Qg5-+) 37...Qc6 (better 37...Rd1! 38.Rd1 Qc6-+) 38.Rc6 Be6 39.Kf2 (39.Rc2 Kf8-+) 39...Rd2 40.Kg3 g5 41.Rb6 Kg7 42.Rb7 Rc2 (42...h5 43.h3-+) 43.h4 (43.Ra7 Kf6-+) 43...Rd2 (better 43...gh4 44.Kh4 Rg2 45.Ra7-+) 44.h5 Rc2 45.Rb6 Rd2?? (better 45...Rc1 46.Kf2 Kf6-+) 46.Re6?? (46.Rb7 Kf6 47.Rb5-+) 46...Rc2 (better 46...fe6 47.Kh2 g4-+) 47.Re5 f6 (47...Rb2!?+-) 48.Rf5 (48.Rf5 Rc7 49.Rd5+-; 48.Re7 Kg8+-) 1–0. RichardSommer (2045) – Irina1968 (2060), lichess.org, 2020.

6.Nf3 e6 7.cd5 ed5 8.Bf6 gf6 9.Nd4=.

6.Nf3 Bf5 7.Bc3 Qa4 8.Qa4+= Ra4 9.Bf6 gf6 (9...ef6 10.cd5 Bd6 11.Nc3+/–) 10.cd5+/– e5 (10...Ra5 11.dc6 Nc6 12.Nc3+/–) 11.dc6 (11.Nc3 Rg4+/–) 11...Nc6 12.Nc3 Ra5 (12...Ra3 13.Nd5+/–) 13.Bb5 Be6 14.a4 Be7 (14...Rg8 15.Rg1+/–) 15.0-0 (15.Bc6 bc6 16.Rb1 Bd6+/–) 15...0-0 (15...Bb4 16.Rfb1 Bc3 17.Bc6 bc6 18.dc3+/–) 16.d4 ed4 (16...Rc8 17.d5 Na7 18.de6 Rc3 19.Bd7+/–) 17.Nd4 (17.ed4 Rd8 18.Bc6 bc6+-) 17...Nd4 18.ed4 (18...Rc8 19.Rfc1+/–) 1–0. Weir,R – Grobe,O, CiF, 1994.

6.Nf3 Bf5 7.Bc3 Qd8!? =.

6.Nf3 Bf5 7.Nc3 dc4 8.Bc4 Nbd7 9.0-0=.

6.Nf3 Bf5 7.Nc3 e6 8.Be2 (8.cd5 A) worse 8...Nd5 9.e4 Qb4 10.Qb3 (worse 10.ed5 Qb2 11.Nd4 Bb4=+) 10...Be4 11.Qb4 Nb4 12.Ne4 Nc2 13.Kd1 Na1 14.Nc3+=; B) 8...ed5 9.Be2 Na6=) 8...Nbd7 (8...dc4 9.Bc4 Nbd7 10.0-0=+) 9.0-0 (9.cd5 ed5 10.Nd4 Bg6=) 9...Bd6 (9...dc4 10.Bc4 Bd6 11.Be2=+) 10.cd5= ed5 11.Nd4 Be6 12.Ne6 fe6 13.Bh5 (13.d4 0-0=) 13...g6=+ 14.Bg4? (better 14.Be2=+) 14...Qb4-+ 15.Be6 Qb2 16.Rb1 Qa3 17.Rb7? (17.Bd7 Nd7 18.Rb7-+) 17...Nc5 18.Bf7 Kf8 19.Qf3 Nb7 (better 19...Be7 20.Bd5 cd5-+ (20...Nb7?! 21.Bc6 Rb8 22.Bb7-+)) 20.Rb1?? (better 20.Qf6 Bh2! 21.Kh2 Qd6 22.Qd6 Nd6 23.Be6-+) 20...Kf7 21.Rb7 Be7 22.g4 Qa6 23.Rc7 (23.Rb3 h6 24.Qg3 Rad8-+) 23…h6 0–1. Konijn – Schouwerwou, Hoogovens, 2019.

6.Nf3 Bf5 7.Nd4 Bg6 8.Nb3 =.

6.Nf3 Bf5 7.Bf6 gf6 8.cd5 Qd5=.

6.Nf3 Bg4 7.Be2 (7.Bc3 Qb6=) 7...dc4 (7...Bf3 8.gf3 dc4 9.Bc4=+) 8.Bc4= Bf3 (8...Qb4 9.Qc2=) 9.Qf3 Qb4 10.Bb3 Nbd7 11.0-0 e6 (11...Qg4 12.Qg4 Ng4 13.Nc3=) 12.Nc3 (12.d4 Nb6=) 12...g6 (12...Bd6!?=) 13.d4+= Bg7 14.Ne4 (14.Rab1 0-0+=) 14...Ne4= 15.Qe4 Nc5 16.Qc2 Nb3 17.ab3 0-0 18.Ra8 (18.Bc3 Qd6=) 18...Ra8 19.g3 (19.Bc3 Qb5=) 19...Ra2=+ 20.Qc3 (20.Bc3 Qa3 21.Qb1 Qa6=+) 20...Qb6 (20...Qc3 21.Bc3 Ra3 22.Rb1-/+) 21.Ra1=+ Ra1 22.Ba1 Qa7 23.b4 Qa4 24.Qe1 Qc2 25.Bc3 b6 (25...h6 26.Qd2 Qd2 27.Bd2=+) 26.Bd2 (26.e4 h6=) 26…Bf8 (26...Qd3 27.Qc1=+) ½–½. Rush,Bradley – Paetzold,Ortwin, IECG 7PSRR, 1995.

6.c4 Bg4 7.Nc3 e6 8.Qb3 Nbd7=+ 9.d4 (worse 9.Qb7 Rb8 10.Qc6 Bf3-+) 9...Ba3 (9...Bf3 10.gf3 b6 11.cd5 Nd5 12.Kd1=+) 10.Ba3 (10.Qb7?? Rb8 11.Qc6 Bb2-+) 10...Qa3 11.Qb7?? (better 11.Nd2=) 11...Qc3-+ 12.Kd1 Qa1 (12...Qa1 13.Kc2 Ra2 14.Kd3 Qd1 15.Kc3 Qc2 16.Kb4 Qb2) 0-1. zembelek (2005) - Pikozrout (2210), Rated Blitz game, lichess.org, 2014.

6.Be2 b5 7.0-0 =.

6.Be2 Nbd7 7.0-0 b5 8.Bd4 =.

6.Be2 Nbd7 7.0-0 e6 8.d3 (8.Bc3 Bb4=) 8...Bd6 9.Nbd2 (9.Bc3 Qc7=) 9...0-0 10.c4 (10.Nb3 Qc7=) 10...Qc7 (10...e5 11.Nb3 Qb4 12.c5 Bc5 13.Ne5=) 11.h3 (11.cd5 ed5 12.Qc2 Re8=) 11...b6 12.Qb3 (12.cd5 ed5 13.Qc2 Re8=) 12...Bb7 (12...Nc5 13.Qc3=+) 13.d4 Ra7 14.Rfb1 Rfa8 15.Rc1 (15.Bd3 Ba6=) 15...h6 16.a4 c5 17.cd5 ed5 18.Bb5 Qd8 19.Nh4 c4 20.Qc3 Qf8 21.Ba3 Ba3 22.Ra3 Ba6 23.Bc6 Rc8 24.Bd7 Nd7 25.Rca1 Bb7 26.Nf5 g6 27.Ng3 Rca8 28.e4 b5 29.Rb1 Ra4 30.Ra4+= Ra4 31.Rb5 Bc6 32.Ra5 Nb6 33.Nf3 Qb4= 34.Qb4 Rb4 35.Ne5 Bb7 36.ed5 c3 37.Rc5 Nd5 38.Ne4 Rd4 39.Nc3= Nf4 40.Nf7 ½–½. Sayder,H – Langhans,J, corr, 1995.

6.Be2 Nbd7 7.Bc3 Qc7=.

6.Be2 e6 7.0-0 Be7 8.c4 0-0 9.d4 b5 10.cb5 cb5 11.Na3?? (11.a3 Ba6=) 11...b4?? (better 11...Ba3 12.Ba3 Qa3 13.Bb5 Ba6-+) 12.Nc2 Nc6 (12...Ba6 13.a3 b3 14.Nb4 Be2 15.Qe2=+) 13.h3 (better 13.a3!? Qc7 14.ab4 Ra1 15.Qa1 Nb4 16.Nb4 Bb4 17.Ba3+=) 13...Ba6-/+ 14.Ba6 Qa6 15.a3 b3 16.Nce1 Na5 17.Nd3 Nc4 (better 17...Rfb8!?-/+) 18.Qb3= Rfb8 (worse 18...Ba3 19.Nc5 Qa5 20.Ba3 Na3 21.Ra2+-; 18...Na3? 19.Nc5 Bc5 20.dc5+-; 18...Nb2?! 19.Nb2 Rfb8 20.Qc2=) 19.Qc2 Nb2 20.Nb2 Rc8 21.Qe2?? (better 21.Qd3 Ba3 22.Rfb1=) 21…Qe2-+ (21...Qe2 22.Nd1 Ra3-+) 0-1. greay (2330) - BeepBeepImAJeep (2600), lichess.org, 2019.

6.Be2 Bg4 7.0-0 Nbd7 8.d4 e6 9.Nbd2 b5 10.h3 Bh5 11.Re1 (11.Nb3 Qc7=+) 11...Nb6 (11...Bd6 12.Nb3 Qc7 13.Nfd2-/+) 12.Nb3 (12.Ne5 Be2 13.Qe2 Na4=+) 12...Qa7 13.Nfd2 Be2 14.Qe2 Nc4 15.Reb1 (15.Nc4 bc4 16.Nd2 Qa5=+) 15...Nb2 16.Rb2 Bb4 17.Qd3 0-0 18.c3 Ba3 19.Rc2 Rfe8 20.e4 e5 21.Re1 Qc7 22.ed5 Nd5 23.Nf3 ed4 24.Re8 Re8 25.Nbd4 Nf4 26.Qf5 g6 27.Qf6 Bd6 28.c4 bc4 29.Rc4 Qb8 30.Nb3 (30.Rc6?? Qb1 31.Kh2 Qf1-+) 30...Re6 31.Qa1 (31.Qh4 Nd3=) 31...Ne2 32.Kf1 Qb5 33.Nbd2 Qd5 34.Qb1 c5 35.Qb3 h6 (35...Qc6 36.Qa4 Qb6 37.Ng5=) 36.Re4 Qb3 37.ab3 Nc1 38.Re6 fe6 39.Ne4 Be7 40.Ne5 Kg7 41.Nc6 Bf8 42.Na5 Kf7 43.g3 e5 44.Ke1 Ke6 45.Kd2 Na2 46.f3 h5 (46...Nb4 47.h4=) 47.g4 Nb4 (48.gh5 gh5=) =. Woschkat,Karl_Heinz (2140) – Salvador Marques,Carlos (2415), EM/J50/P063 ICCF Email, 2001.

7.0-0 Bf3 8.Bf3 e5 9.d3 Bd6 10.Nd2 Ne7 11.c4 0-0 12.Qb3?? (12.Qc2 f5=) 12...Rab8 (better 12...Qd2 13.Rfd1 Qa5-+) 13.Rfd1 Nc5 14.Qc2 Qa4 15.Qa4 Na4 16.Rab1 f6 17.cd5 (17.Ba1 Rfd8+=) 17...Nd5= 18.d4?? (better 18.Nc4 Be7 19.Rd2=) 18...Ndc3-/+ 19.Bc3 (19.Ba1 ed4 (19...Nd1?! 20.Bd1 b5 21.Ne4=+) 20.ed4 Bf4-/+) 19...Nc3-+ 20.de5 Be5 21.Nc4 Nb1 22.Rb1 Rfd8 23.g3 Bc7 24.a4 b6 (better 24...g5-+) 25.Bc6=+ Kf8 26.Bb5 (26.Be4=+) 26...Rd3 (26...Rd5 27.Kg2=+) 27.Rc1 (better 27.Ne5 Rc3 28.Nd7 Ke7 29.Nb8 Bb8 30.Kg2+=) 27...Bd8?? (better 27...Rd5=+) 28.Nb6!+- Rb3 (28...Rb6 29.Bd3 Discovered attack; 28...Bb6 29.Bd3 Discovered attack) 1-0. dale70 (2020) - Snipy (2115), Rated Blitz game, lichess.org, 2015.

7.0-0 Bf3 8.Bf3 e5 9.d4 e4 10.Be2 Bd6 11.c4 Qc7 (11...dc4 12.Qc2 Ngf6 13.Nd2=) 12.h3 (12.cd5 cd5 13.Nc3 Bh2 14.Kh1 Qd6+=) 12...f5? (12...dc4 13.Nd2 b5 14.Qc2=) 13.c5 (better 13.cd5!? Ne7 14.dc6 bc6 15.Nc3+/-) 13...Be7+= 14.f3 (14.Nc3 Bg5+=) 14...Ngf6= 15.fe4 fe4 16.Bh5 (16.Nd2!?=) 16...g6=+ 17.Bg4 Qg3 18.Bd7 Kd7 (18...Nd7 19.Qd2-/+) 19.Qe1? (better 19.Qb3!?=) 19...Qe1-/+ 20.Re1 Nh5 21.Kh2 (21.g4!? Ng7 22.Nc3-/+) 21...Bh4-+ 22.Rf1 (22.Rd1 Rhf8 23.Nc3 Rf2-+) 22...Rhf8 (22...Ng3 23.Rf7 Ke6 24.Rb7 Nf1 25.Kg1 Ne3 26.Nd2-+) 23.Nd2 (23.Rf8 Rf8 24.Nd2 Rf2-+) 23...Bg3 (better 23...Bf2!?-+) 24.Kg1-/+ Rf1 (24...Ng7 25.a4-/+) 25.Nf1 Bh4 26.g4 Ng3 (26...Ng7 27.Bc3-/+) 27.Ng3=+ Bg3 28.Bc3 (28.Kg2 Bc7=+) 28...Bh4 29.a4 Bg5 (better 29...Rf8 30.Rf1 Rf3 31.Rf3 ef3-/+) 30.Kf2? (30.Bd2 Rf8=+) 30...Ke6?? (30...Rf8!? 31.Kg2 Be3-+) 31.a5 (better 31.Ke2!?=+) 31...Rf8-/+ 32.Ke2 Rf3 33.Bd2 Rh3 34.Rb1?? (better 34.a6 ba6 35.Ra6-/+) 34...Rh2-+ 35.Kd1 Rh1 36.Kc2 (36.Be1 Be3 37.Ke2 Bd4 38.Rb7 Bc5 39.a6 Rh2 40.Kd1-+) 36...Rb1 37.Kb1 h5 0-1. dale70 (2085) - Snipy (2040), Rated Blitz game, lichess.org, 2015.

7.0-0 f6 8.d4 e6 9.Nbd2 Bd6 10.c4 Ne7 (10...b6 11.cd5 ed5 12.a4=) 11.Qb3 (11.c5 Bc7+=) 11...Bf3 (11...b6 12.Rfc1=) 12.Nf3+= Qa7 (12...b6 13.a4+=) 13.c5 Bc7 14.a4 0-0 15.Bc3 e5 16.Rfb1 Rab8 17.a5 e4 18.Nd2 f5 19.f3 Kh8 20.f4 g5 (20...Kg8 21.Qc2+=) 21.fg5+/- f4 22.Ne4! de4 23.d5?? (better 23.Bg4 Nf5 24.Qe6+-) 23...Be5-/+ 24.d6 (24.Be5 Ne5 25.Qb2 N7g6-/+) 24...Nd5 25.Be5 Ne5 26.ef4 (26.Qb2 Rf5 27.a6 f3 (27...Ne3 28.Qb7 Rb7 29.ab7=; 27...Qc5 28.a7 Ra8 29.Qb7=) 28.gf3 ef3 29.Bf3 Qc5-/+) 26...Rf4 (26...Nf4 27.Qe3 Ne2 28.Qe2 Qc5 29.Kh1-+) 27.Qb2? (better 27.Qc2-/+) 27...Qc5-+ 28.Kh1 Qd6 29.a6 Rf7 (29...b5 30.Rf1-+) 30.a7 (30.Ra4 e3-+) 30...Ra8 31.Bh5 (31.Ra4 Re7-+) 31...Re7 32.Re1 (32.Rf1 b5 33.Rf5 Kg8-+) 32...Qb4 (better 32...Kg8!? 33.Qd2 Nd3 34.Rf1-+) 33.Qb4 Nb4 34.Re4 Nbd3 35.Re2 (35.Kg1 b5-+) 35...b5 36.g6 (36.Rea2-+) 36...hg6 37.Bg6 (37.Bg4 Rea7 (worse 37...Ng4 38.Re7 Nc5 39.Rf1+/-) 38.Ra7 Ra7-+) 37...Ng6 (37...Rea7 38.Ra7 Ra7 39.g3 Ng6 40.Re8 Kh7 41.h4-+) 38.Rd2 (38.Re7 Ne7 39.Ra3 Nc5-+) 38...Nge5 39.h3 Rea7 40.Rf1 (40.Rad1 Ra3-+) 40...Ra1 41.Ra1 Ra1 42.Kh2 Rf1 (better 42...b4 43.Kg3-+) 43.g4 (43.Ra2 b4 44.Ra8 Kg7-+) 43...Rf2 (43...Nf3 44.Kg3 Nd2 45.Kh4 Kg7 46.Kg5 Ne4 47.Kh5 Rf8 48.g5 Ne5 49.h4 Rh8) 44.Rf2 Nf2 45.Kg3 Nfd3 (45...Nfd3 46.Kh4 b4 47.Kh5 b3 48.Kg5 b2 49.Kh5 b1Q 50.Kg5 Qc1 51.Kh5 Kh7 52.Kh4 Kh6 53.Kg3 Qg1 54.Kh4 Qf2) 0-1. dale70 (2060) - Snipy (2195), Rated Blitz game, lichess.org, 2015.

8.c4 e6 9.cd5 ed5 10.d4 (10.Ne5 Be2 11.Qe2 Ne5 12.Be5 Be7=) 10...Bd6=+ 11.Nc3 0-0 12.Qc2 Qc7 (12...Rfe8 13.Rab1=+) 13.h3 Bh5 14.Rfc1 Rfc8 (14...Qa5 15.Qb3=+) 15.a4 (15.Qb3 Bf3 16.Bf3 Ra5=) 15...h6 (15...Bg6 16.Qb3 Ra5 17.Ba3 Ba3 18.Ra3=) 16.Ba3 Bg6 (16...b6 17.Qd3 Bf3 18.Bf3 Ba3 19.Ra3=) 17.Bd3 (17.Qb3 Ba3 18.Ra3 b6+=) 17...Bd3 18.Qd3 Ba3 19.Ra3 Qd6 20.Ra2 ½–½. Houdek – Hansen,Bjarne G, corr 3GMM–17, 1995.

8.c4 Bf3 9.Bf3 dc4 10.Qc1=+.

8.d4 e6 9.c4 Be7 10.Nbd2 0-0 11.Qc2 Bf5 12.Bd3 Bd3 13.Qd3 Qa6 14.Rfc1 Nb6 15.Ne5 dc4 16.Ndc4 Nc4 17.Rc4 Nd5 18.h3 Rfd8 19.Rc2 (19.e4 Nb4 20.Qb3 Na2=) 19...Qd3 (19...Nb4!? 20.Qa6 Ra6-/+ (20...Na6?! 21.Bc3=; worse 20...ba6 21.Rc4+/-)) 20.Nd3= Ra4 21.a3 Rda8 22.e4 Nf6 23.f3 Ba3 24.Ba3 Ra3 25.Ra3 Ra3 26.Nc5 Ra7 27.Rb2 b5 28.g4 Nd7 29.Nd3 Nb6 (29...Ra3 30.Nb4 Rc3 31.Kf2-/+) 30.Ne5=+ Rc7 (30...Ra1!? 31.Kf2 Rc1=+) 31.Rc2= b4 (better 31...g5=) 32.Rc6?? (better 32.Nd3 b3 33.Rb2+=) 32...Rc6-+ 33.Nc6 (33.Kf1 b3 34.Nd3 Rc2-+) 33...b3 34.d5 ed5 35.ed5 (35.Ne7 Kf8 36.Nd5 Nd5 37.ed5 b2-+) 35...b2 36.d6 b1Q 37.Kg2 Qc2 38.Kg3 Qc6 39.f4 Qd6 (39...Qd6 40.Kf3 Qd3 41.Kf2 Nd5 42.Kg2 Nf4 43.Kf2 Qe2 44.Kg3 g5 45.h4 Qg2) 0-1. dale70 (2020) - Snipy (2055), Rated Blitz game, lichess.org, 2015.

8.d4 e6 9.Nbd2 Bb4 10.c3 Bc3?? (better 10...Bd6=+) 11.Nb3+- Qb4? (better 11...Bb2 12.Na5 Ba1 13.Nb7 Bb2+-) 12.a3 Bb2 (12...Qd6 13.Bc3 Ra3 14.Bb2 Ra1 15.Qa1+- (15.Na1?! Ne4+-; 15.Ba1?! 0-0+-)) 13.ab4 Ra1 (13...Ba1 14.Na1 0-0+-) 14.Na1 1-0. dale70 (2075) - Snipy (2050), Rated Blitz game, lichess.org, 2015.

8.d4 e6 9.Nbd2 Bd6 10.c4 0-0 11.Nb3 Qa7 12.c5 Bc7 13.h3 Bf3 14.Bf3 Rfe8 15.Re1 e5 16.Qc2 e4 17.Be2 Nf8 18.Bf1 Ne6 19.a4 Qb8 20.a5 Qc8 21.g3?? (21.Bc3 Bb8=) 21...Bb8 (21...Ng5 22.Kh1-+) 22.Qe2 (better 22.Bg2!?=) 22...Ng5-/+ 23.h4? (better 23.Reb1!? Nh3 24.Kg2-/+) 23...Nf3-+ 24.Kh1 Qg4 25.Red1?? (25.Nd2 Ne1 26.Qe1 Bc7-+) 25...g5 (better 25...Nh5 26.Qf3 ef3-+) 26.Bg2? (26.Nd2 gh4 27.Bg2 Ng5 28.Qg4 Ng4 29.gh4 Nf2 30.Kg1 Nd1 31.Rd1 Ne6-+) 26...gh4 (better 26...Nh5 27.Nd2 Qg3 28.Nf3 ef3 29.fg3 Ng3 (worse 29...fe2 30.Re1-+) 30.Kg1 Ne2 (worse 30...fe2 31.Re1-+) 31.Kf2 fg2 32.Ke2 gh4-+) 27.Bf3 (27.Nd2 Ng5 28.Qg4 Ng4 29.gh4 Nf2 30.Kg1 Nd1 31.Rd1-+) 27...ef3 (27...Qf3?! 28.Qf3 ef3 29.gh4-+) 28.Qd3 (28.Qf1 hg3 29.Qh3 Qh3 30.Kg1 Qg2) 28…Qh3 (28...Qh3 29.Kg1 Qg2) 0-1. zembelek (2000) - Snipy (2170), Rated Blitz game, lichess.org, 2015.

8.Ne5 Be2 9.Qe2 e6=.

5.c4 e5 6.Bc3 Qc7 7.Be2 Nf6 8.Nf3 Bg4 9.0-0 Nbd7 10.h3 Bh5 11.d3 d5 12.cd5 Nd5 13.Bb2 Bc5 14.Nbd2 0-0 15.a4 b6 16.Nc4 f6 17.Nd4? (17.d4 ed4 18.Nd4 Bf7=) 17...Be2 (Better is 17...ed4!? 18.Bh5 de3-/+) 18.Ne2= f5 19.Nc3 (19.d4 ed4 20.Nd4 Bd4 21.Bd4 b5 22.ab5 cb5 23.Ra8 Ra8+=) 19...Bb4 20.Nd5 cd5 21.Na3 Ba3 ½–½. Dopper,Johan – Myrberg,Johnny, TKM/SF/02, 2001.

5.Nf3 Nd7 6.Be2 Ngf6 7.0-0 g6 8.c4 Bg7 9.d4 0-0 10.Nbd2 Nb6 11.Qb3 Na4 12.Bc1 Qc3 13.Ba3 Qa5 14.Bb4 Qa7 15.Bd3 Bd7 16.Nb1 Rfd8 17.Bd2 Bg4 18.Nc3 Bf3 19.gf3 e5 20.Na4 Qa4 21.Bc3 Qb3 22.ab3 Nd7 23.d5 cd5 24.cd5 Ra1 25.Ra1 Rc8 26.Bb2 e4 27.Bg7 ed3 28.Bb2 Rc2 29.Ba3 d2 30.Rd1 Nc5 31.Bc5?? (better is 31.Kf1=) 31...Rc1-+ (31...dc5?! 32.Kf1 Kf8 33.Ke2=) 32.Bb4 (32.Kf1 Rd1 33.Ke2-+) 32...Rd1 33.Kg2 Rg1!! 34.Kg1 d1Q 35.Kg2 Qb3 36.Bd6 Qd5 37.Bb4 (37.Bc7 b5-+) 37...b5 (better is 37...Qg5 38.Kh3 Qb5 39.Ba3-+) 38.Bc3 (38.h3 Qg5 39.Kf1 Qh4-+) 38...Qc4 39.Bd4 b4 40.h4 b3 41.h5 Qd4! 42.ed4 b2 43.h6 b1Q 44.f4 Qe4 45.f3 Qd4 46.Kg3 Qg1 47.Kh4 (47.Kh3 f5 48.Kh4 g5 49.Kh3 gf4 50.Kh4 Qg6 51.Kh3 Qg3) 47...Qg2 48.f5 g5 49.Kh5 f6 50.f4 Qh3 (50...Qe2) 0–1. Svitek,Volker (2140) – Dahlheimer,Bernd, Hessenliga, 2006.

5.a3 Nf6 6.Nf3 d6 7.Be2 Be7 8.0-0 (8.Nc3 0-0=+) 8...0-0 9.h3 (9.c4 Nbd7=+) 9...e4 10.Ne1 (10.Nd4 Qg5 11.Kh1 d5=+) 10...Qg5-/+ 11.Kh2 Nd5 (11...d5 12.f4 Qg6 13.Nc3-/+) 12.c4=+ Bf6 13.f4 (13.Qb3 Be5 14.Kh1 Bb2 15.Qb2 Nf6=+) 13...Qh4 (13...Qg6 14.Bf6 Nf6 15.d4=+) 14.Qb3 Bb2 15.Qb2 Nf6 16.Nc3 Re8 (16...Nbd7 17.Rd1=+) 17.Nc2 Nh5 (17...Nbd7 18.Nd4 Nc5 19.Rab1=+) 18.Bh5 Qh5 19.Nd4 Na6 (19...Nd7 20.f5=+) 20.Rfb1 (20.f5 Nc5=+) 20...Nc5 21.Qb6 Qh4 (21...Qg6 22.a4=+) 22.Qc7 Qe7 23.Qe7= Re7 24.Rb4 h6 25.Nb3 Be6 26.Nc5 dc5 27.Ra4 Ra4 28.Na4 Bc4 29.Nc5 b6 30.Na4 b5 31.Nb6 Bb3 32.Rb1 Ba2 33.Rb2 Rb7 34.Ra2 Rb6 35.Rc2 Ra6 36.Rc3 f6 37.Kg3 Kf7 38.f5+/– g5 39.fg6 Kg6 40.Kf4 f5 41.Ke5 Kg5= 42.g3 Ra5 43.Kd6+= Ra8 44.Kc6+/– Rc8 45.Kb5+- Rc3?? 46.dc3 h5 47.c4 h4 48.gh4 Kh4 49.c5 f4 50.ef4 e3 51.c6 e2 52.c7 e1Q 53.c8Q Qb1 54.Kc6 Qc2 55.Kb7 Qb3 56.Kc7 Qc4 57.Kd8 Qg8 58.Kd7 Qf7 59.Kc6 Qc4= 60.Kb7 Qb3 61.Kc7 Qc4+/– 62.Kd7 Qf7+= 63.Kd6 Qf4 64.Kd5 Qd2 65.Ke4 Qe2 66.Kf4 Qf2= 67.Ke5 Qb2 68.Kf5 Qa3 ½–½. Szczesiak,Zenon – Ewert,Jerzy, corr 2. AMM Poland, 1994.

5.Bb2 d6 6.Bc4 Nf6 7.0-0 Be7 8.d3 0-0 9.Nbd2 Bg4 10.h3 Bf3 11.Nf3 Nbd7 12.Qd2 Qd2 13.Nd2 d5 14.Bb3 Bd6 15.e4 Rfe8 16.ed5 cd5 17.c4 d4 18.Rfe1 Nc5 19.Bc2 Na4 20.Ba4 Ra4 21.Ne4 (21.Nb3 Bb4 22.Re2 Kf8=) 21...Ne4-/+ 22.Re4 f5 23.Re2 Rea8 24.Bc1 e4 25.de4 d3 26.Rd2? (better is 26.Re3!? fe4 27.Re4+=) 26...fe4-+ 27.Kf1 (better is 27.f3 Rc4 28.fe4-+) 27...Rc4 28.Rb2 Be5 0–1. retiarius – thenash, ChessWorld.net, 2012.

5.Bc3 Bb4 6.Bb4 Qb4 7.Nc3 =.

5.Bc3 Bb4 6.Qg4 Bc3 7.Nc3 g6 +=.

5.Bc3 Bb4 6.Qg4 g6?? 7.Qb4+– Qb4 8.Bb4 Na6 9.Bd6 f6 10.Nc3 Nh6 11.Ne4 Ng8 (11...Ng4 12.Be2 f5 13.Bg4 fe4 14.Be2+–) 12.Bc4 (12...f5 13.Be5 fe4 14.Bh8+–) 1–0. Rosner,Dirk (1930) – Hasler,Ueli, CiF, 2006.

5.Bc3 Qc7 =.

5.c4 Nf6 6.Nc3 Ba3 7.Ba3 Qa3 8.Qc1 0-0 9.Qa3 Ra3 10.Nf3 d6 11.Be2 Na6 12.0-0 Nb4 13.Bd1 Be6 14.Bb3 Rfa8 15.Rab1 c5 (15...Bf5 16.Rb2-/+) 16.Ng5 (better is 16.Nb5!?+=) 16...Bf5 17.Ra1 (17.e4 Bd7+=) 17...Bd3 18.Rfc1 h6 19.Nf3 Ne4 20.Ne4 (20.Rd1!?-/+) 20...Be4-+ 21.Ne1 ½–½. Berner,Stephan (1755) – Hoffmann,Paul (2035), GER schools Cup g'+3, 2004.

5.c4 Nf6 6.Nf3 Bd6 7.Bc3 Qc7 8.d3 c5 9.Be2 Nc6 10.0-0 0-0 11.Bb2 e4 (11...Be7 12.Nc3=) 12.de4+= Ne4 13.Bd3 f5 (13...Re8!?+=) 14.Be4+/– fe4 15.Qd5 Kh8 16.Qe4 Be7 17.Qg4 Bf6 18.Bf6 Rf6 19.Qh5 Qd8 20.Ng5 (20.Qc5? Ra5 21.Qb5 Rb5 22.cb5 Rf3 23.bc6 dc6-+) 20...Qg8 21.Nc3 Ne7 22.Nce4 Rg6?? (22...Rf8+-) 23.Nd6!! (23.Nc5?! Ra5 24.Nce4 Rf5+-) 23...Rg5 24.Nf7 Qf7 25.Qf7 Ng8 26.a4 Rg6 27.Rfd1 Raa6 28.Qf8 Rac6 29.f3 h6 30.a5 Kh7 31.Rab1 Rge6 32.Rb6! Rf6 33.Qd8 Rb6 34.ab6 Rc6 35.Qf8 d6 36.Rd6 Rd6 37.Qd6 Nf6 38.Qd3 g6 39.Qd8 1–0. "lasker" (1950) – thotares (1630), internet, 2007.

5.c4 Nf6 6.Nf3 e4 7.Bf6 gf6 8.Nd4 h5 9.f4 f5 10.Nc3 Bb4 11.Nb3 Qa7 12.Qc2 h4 13.Be2 Rg8 14.g4 d6 15.gf5 Bc3 16.Qe4 Kd8 17.dc3 Re8 18.Qd4 Qd4 19.ed4 Bf5 20.Kd2 Rg8 21.Bf3 Nd7 22.Rhe1 Nb6 23.c5 Nc4 24.Kc1 Kd7 25.cd6 Rae8 26.Kd1 Kd6 27.Re8 ½–½. Brennecke,Willi – Moeller,Reinhold, DESC, 2001.

5.Bc4 d5=+ 6.Bb3 Bd6 7.Nf3 Bg4 8.h3 Bh5 (better 8...Bf3!? 9.Qf3 Nf6=+) 9.g4+= Bg6 10.Ne5 Be5 11.Be5 f6 12.Bd6 Ne7 13.a3 Qd8 14.Bb4 (14.Bf4 Na6+-) 14...Nd7 (14...Na6 15.Bc3+=) 15.d4 Bf7 16.Nd2 0-0 17.Nf3 g5? (better 17...b6+=) 18.h4+- h6 19.hg5 hg5 20.c4! dc4 21.Qc2 Bg6 22.Bc4 Kg7 23.Bd3 Bd3 24.Qd3 Rh8 25.Kd2 Rh1 26.Rh1 Ng6 27.d5 c5 (better 27...Nde5 28.Ne5 fe5 29.dc6 bc6 30.Qd8 Rd8 31.Ke2 Rc8+-) 28.Ng5?? (better 28.Bc3!? Nb6 29.Ng5 Qd5 30.Rh7 Kg8 31.Bf6 Nc4 32.Ke2 Qd3 33.Kd3 Nce5 34.Ke4 Ng4 35.Rg7 Kf8 36.Ne6 Ke8 37.Nc7 Kf8 38.Kf5 Nf6 39.Kg6+-) 28...fg5+- 29.Bc3 Nf6 30.f4 Kf7 31.fg5 c4 (31...Qd5 32.Rh7! Ke6 33.gf6 (33.Bf6?! Qd3 34.Kd3 b5+=) 33...Qd3 34.Kd3+-) 32.Rh7! (32.Bf6?! Qa5 33.Bc3 cd3 34.Ba5 Ra5 35.Kd3 Rd5 (worse 35...Ra3 36.Kd4+=) 36.Kc3 Ne7=+) 32...Nh7 33.Qf5 Nf6 34.Qe6 Kf8 35.Bb4 Kg7 36.Qf5?? (36.gf6 Kh7 37.Qf5 c3 A) 38.Bc3?! Qf8 39.f7 b5+- (39...Ra3 40.Qh5 Qh6 41.f8Q Ra2 42.Kd1 Ra1 43.Ba1 Nf8 44.Qf7 Qg7 45.Qg7); B) 38.Ke2+-) 36...Qe8 (better 36...Nd5 37.Bc5 Qa5 38.Bb4 Qb6-+) 37.Qe5?? (better 37.gf6 Kg8 38.e4-/+) 37...Qe5-+ 38.Bf8 Kg8 39.Bc5 Ng4 (39...Ne4 40.Kc1 Qc3 41.Kb1 Nd2 42.Ka2 Qb3 43.Ka1 Qb1). Dolejs,Dan – Gidman,E, NZL NZCCA TT Class, 1995.

5.Be2 Qb6 6.Bc3 Nf6 7.Bf6 ef6 8.Nf3 Bf5 9.Nc3 Bd6 10.0-0 0-0 11.Nh4 Be6 12.Bd3 Be5 13.Qh5 g6 14.Ng6 fg6 15.Bg6 Qc7 16.Bd3 Ra3 17.f4 Bc3 18.dc3 Qe7 19.Rf3 Rc3 20.Rh3 Bh3 21.Qh3 Ra3 22.Re1 Kh8 23.e4 Ra2 24.Kf1 Ra4 25.Qf5 Re8 26.e5 Nd7 27.Re3 fe5 28.fe5 Rf8 0–1. DKCozy – Bauernopfer, playchess.de, 2001.

5.Nf3 e4 6.Nd4 d5 7.Nb3 Qc7 8.c4 Nf6 (8...dc4 9.Bc4 Na6 10.a4=) 9.cd5 (9.Bf6 gf6 10.cd5 cd5=) 9...cd5 (9...Nd5 10.d3 ed3 11.Bd3=) 10.Nc3 (10.Bf6 gf6 11.Bb5 Bd7=) 10...Bd6 (10...Be7 11.Nb5 Qd8 12.Be2=) 11.Nb5= Qb6 (11...Qd8 12.Nd6 Qd6 13.Be2=) 12.Bd4 (12.Qc2 Na6+=) 12...Qd8= 13.Nd6 Qd6 14.Bb5 Nc6 15.Bc5 Qe5 16.0-0 (16.d4 Qg5 17.Rg1 Qh6=) 16...Nd7 (16...Ng4 17.g3 Qh5 18.h4=+) 17.Bc6 (17.d4 Qe6+=) 17...bc6= 18.Bd4 Qg5 19.f4 Qg6 20.f5 Qg5 (20...Qh6 21.Qg4 0-0 22.Qg3+=) 21.Qc2+= Bb7 (21...Ra6 22.Nc5 Nc5 23.Qc5+=) 22.Nc5+/- Nc5 (22...Ba6!? 23.Na6 Ra6+/-) 23.Qc5 (23.Bc5?! Ba6 24.Rf4 Kd7=) 23...Qe7 (23...Qd8 24.f6 Qc7 25.Rf5+-) 24.Qe7+- Ke7 25.Bg7 (25.f6!? gf6 26.Bf6 Ke6 27.Bh8 Rh8 28.Rfb1+-) 25...Rhg8+/- 26.Bd4 Ba6 27.Rfc1 Bb5 28.g4 (better 28.f6 Kd6 29.a3+=) 28...Rg4=+ 29.Kf2 f6 (29...Rg5 30.f6 Kd6 31.Rg1 Rf5 32.Kg2-/+) 30.Rg1 Rg1 31.Rg1 Kf7 32.Ra1 Ra3 33.Bc5 Rd3 (33...Ra4 34.Bd6=) 34.Ke1+= Ba4 (34...d4 35.a4 (35.ed4? Rf3 36.d3 Bd3-+; 35.Bd4?! c5 36.a4 Ba6 37.Bc5 Rd5=) 35...Ba6 36.Rc1 (worse 36.ed4 Rf3 37.d3 Bd3=+) 36...de3 37.de3=) 35.Rb1+/- Bb5 36.Rb4 d4 (36...Kg7 37.a4 Bc4 38.Rb7 Kh6 39.a5+-) 37.Bd4 (37.a4 Ba6 38.Rb6 Bc8 39.Bd4 Bf5 40.Rc6 Be6+-) 37...Ra3+= 38.Rb1 (better 38.Rb2!?+=) 38...Ra2= 39.Bc3 h5 40.Kf2 h4 (40...Ra6 41.Kg3=) 41.Kg2 Bd3 (41...Ra8 42.Kh3+=) 42.Rc1 (42.Rb7 Ke8 43.Kh3+/- (43.Bf6?! Rd2 44.Kh3 Rf2=)) 42...Ra5?? (better 42...c5=) 43.Kh3 (better 43.Ba5 Bb5 44.Kh3+-) 43...Rf5=+ 44.Kh4 Rh5?? (better 44...c5=+) 45.Kh5+- Be2 46.Kh4 Ke6 0-1. zembelek (2035) - Snipy (2100), Rated Blitz game, lichess.org, 2014.

5.Qh5 d6 6.Bc4 g6 7.Qf3 Qc7 8.Qe2 Bg7 9.d3 Nf6 10.Nf3 0-0 11.0-0 b5 12.Bb3 Nbd7 13.a4 Nc5 14.ab5 Ra1 15.Ba1 cb5 16.Nc3 Nb3 17.cb3 Bd7 18.b4 Qb7 19.e4 Bc6 20.Rc1 Nh5 21.Qe3 f5 22.Rc2 Nf4 23.Ra2 Ra8 24.Ra8 Qa8 25.Bb2 Qb7 26.Ne1 d5 27.ed5 Bd5 28.Nd5 Nd5 29.Qe2 Qe7 30.Nf3 Nf4 31.Qd2 Qd6 32.Ne1 Kf7 33.Qe3 Qb4 34.Be5 Be5 35.Qe5 Qe7 36.Qe7 Ke7 37.g3 Ne2 38.Kg2 b4 39.Nf3 b3 40.Nd2 b2 41.Nb1 Nc1 42.Kf3 Nd3 43.Ke2 Ne5 44.Kd2 Ng4 45.Kc2 Nf2 46.Kb2 Ng4 47.h4 Kd6 48.Kc1 Nf2 49.Nd2 Kd5 50.Kc2 Nh1 51.Nf3 Ng3 52.Kd2 f4 0–1. Rayetzky – Roos, email 4AMM–07 1997.

6.Bc3 Qc7 7.Be2 =.

6.Bc3 Qd5 7.d4 =.

6.c4 Nf6 7.Be2 Bf5 8.0-0= h6 (8...Nbd7 9.d4=) 9.d4 e4 10.Nfd2 Nbd7 11.Nc3 Be7 12.Qb3 Rb8 (12...0-0 A) 13.Qb7? Rab8 14.Nb3 Qc3 (14...Rb7?! 15.Na5 Rb2 16.Nc6=+) 15.Bc3 Rb7-+; B) 13.f3=) 13.Ba3 (13.f3 ef3 14.Bf3 Bd3+=) 13...0-0 (13...Ra8 14.Bc1=) 14.Bb4 Qa7 (14...Qd8 15.a4=) 15.a4 Rfe8? (15...Ra8 16.f3 ef3 17.Bf3+=) 16.a5 (better 16.Nb5!? cb5 17.ab5+-) 16...Bf8 17.Qc2 Increases the pressure on e4 17...d5 (17...Qa8 18.Nb3+=) 18.Bf8+/- Nf8 19.cd5 cd5 20.Nb5 Rec8?? (better 20...Qa6+/-) 21.Qc8+- (21.Na7?! Rc2 22.Rfd1 Bd7=) 21...Rc8 (21...Bc8?? 22.Na7 Ne6 23.Rfb1+-) 22.Na7 Rc2 23.Rfd1 1-0. zembelek (2025) - Snipy (2110), Rated Blitz game, lichess.org, 2014.

6.Bc4 e4 7.Nd4 Qb4 (7...Qg5 8.0-0=) 8.Bb3 Nf6 9.0-0 (9.a3 Qa5=) 9...c5 (9...d5 10.f3=) 10.Ne2 (10.Bc3 Qb6 11.Ne2 Be7=) 10...Be7 (10...c4 11.Bf6 gf6 12.c3-/+) 11.d3 ed3 12.cd3 (12.Qd3 0-0=) 12...Be6 (12...0-0 13.Nbc3=) 13.Nd2 (13.Nf4 Bb3 14.ab3 Ra1 15.Ba1 0-0=) 13...Bb3 (13...0-0 14.Qc2=) 14.Nb3 (14.ab3 Ra1 15.Ba1 0-0=) 14...Nbd7 (14...0-0 15.Nf4=) 15.Ng3 (15.e4=) 15...Ne5 (better is 15...0-0!?=) 16.Nf5+/– White gets strong initiative 16...g6 (16...Rg8 17.f4 Neg4 18.e4+/–) 17.Ne7 Ke7 18.f4 Ned7 19.e4 Rhd8 (19...Rhe8 20.a3 Qa4 21.Rb1+=) 20.e5 (20.a3 Qa4+/–) 20...de5 (20...Nd5 21.Qf3 Nc3 22.Bc3 Qc3 23.Rac1+/–) 21.fe5+/– Ng4 22.Qf3 Rf8 (better is 22...Nh6!?+/–) 23.Qg3+– Ra2 (23...f5 24.h3 c4 25.dc4 (25.hg4 cb3 26.ab3 Qb3 27.Qh4 Ke6 28.gf5 gf5 29.Qh6 Kf7+–) 25...Qc4 26.hg4 Qg4 27.Qg4 fg4 28.Rf8 Nf8 29.Nc5+–) 24.Ra2 Qb3 25.Rfa1 Qe6 26.Qh4 g5 27.Qg5 f6 28.ef6 Ndf6 29.Bf6 Rf6 30.Ra4 c4 31.Rc4 Qb6 32.Qc5 Qc5 33.Rc5 Rd6 34.Rg5 Nf6 35.Rg7 Ke6 36.Rb7 Rd3 37.Ra6 Rd6 38.Rd6 Kd6 39.Kf2 Ke6 40.Kf3 Kf5 41.Rb5 Kg6 42.g4 h5 43.h3 hg4 44.hg4 Ne8 45.Kf4 (45...Kg7 46.Rb7 Kg6 47.Rb6 Kf7 48.Ke5+–) 1–0. Skonieczny,Jerzy – Ewert,Jerzy, corr 2. AMM Poland, 1994.

6.Bc4 Nf6 7.0-0 =.

6.Be2 e4 7.Nd4 Qg5 8.Bf1 Bg4 9.f3 Bh5 10.c4 Qh4 11.g3 Qf6 12.Qb3 ef3 (12...Bf3? 13.Qb7 Qd8 14.Nf3+– (14.Qa8?! Bh1 15.Nc6 Nc6 16.Qc6 Qd7 17.Qd7 Kd7+–)) 13.Kf2 Nh6?? (13...Nd7 14.Nc6 (< 14.Qb7 Rb8 15.Qc6 Rb2-/+) 14...Nc5 15.Bf6 Nb3 16.ab3 Ra1 17.Ba1 bc6 18.d3+/–) 14.h3?? (better is 14.Qb7 Ng4 15.Ke1 f2 16.Kd1 Ne5 17.Kc1+–) 14...Qe7=+ 15.Nf3 Nd7 16.d4 (< 16.Qb7 Rb8 17.Qc6 Rb2-/+) 16...f5 17.Bd3 (< 17.Qb7 Rb8 18.Qc6 Rb2 19.Nfd2 Rb6 20.Qc8 Kf7-/+) 17...Nf6 18.Nbd2 Ne4 19.Kg2 g5 20.d5 Rg8 21.dc6 bc6 22.Be4 fe4 23.Nd4 Rc8 24.a4 g4 25.h4 Bf7 26.a5 d5 27.a6 Qb4 (27...Qc7 28.Qb7 Qd7 29.Rhb1+/–) 28.Qc2+/– Bg7 29.a7 (29.Rhb1 Qc5+/–) 29...Kd7 (better is 29...Ra8!?+=) 30.Rhb1+– Qd6 31.Bc3 (31.Ra6 Rgd8+–) 31...Bd4 (31...Qc7 32.Ra6 Bd4 33.Bd4+= (< 33.ed4 Nf5 34.Nf1 Ra8=)) 32.Bd4+– (32.ed4 Nf5 33.Nf1 Ra8 34.Rb7 Ke6+–) 32...Nf5 33.Nf1 (33.Rb7 Rc7 34.a8Q Ra8 35.Rc7 Qc7 36.Ra8 Qg3 37.Kf1 Qh3 38.Kg1 Qg3 39.Kf1 Qh3 40.Kg1 Qg3 41.Kf1=) 33...Qc7 (33...Ra8 34.Rb7 Ke6 35.Ra6+–) 34.Qb2 (34.Bb6!? Qe5 35.Bc5+/–) 34...Nd4 35.Qd4 Ra8 36.Nd2 Rge8 (36...Ke7 37.cd5 Bd5 38.Nc4+–) 37.cd5 Bd5 (better is 37...cd5!? 38.Rf1 Bg8+–) 38.Nc4+– Ke6 39.Nb6 Rf8?? (39...Red8 40.Rf1 Qe5 41.Qe5 Ke5 42.h5+–) 40.Na8 (40.Nd5 cd5 41.Rb6 Ke7 42.Qb4 Kd7 43.Qb5 Kc8 44.Rc1 Kd8 45.Qd5 Qd7 46.Qa8 Ke7 47.Qe4 Kd8 48.a8Q Qc8 49.Qc8) 40...Ra8 41.Qb6 Qf7 42.Rf1 Qe8 43.Qb7 (43.Ra5 Ke7 44.Qb7 Ke6 45.Qh7 Kd6 46.Rf6 Be6+–) 43...Bc4 (43...Qg8+–) 44.Rf4 Kd6 (44...Bd3+–) 45.Qb4 Kd5 (45...Kc7 46.Qc4 h6 47.Rf7 Qf7 48.Qf7 Kd6 49.Qf6 Kd5 50.Rd1 Kc4 51.Qc6 Kb3 52.Rb1 Ka2 53.Qc2 Ka3 54.Qb3) 46.Rd1 Bd3 47.Qd4 (47...Ke6 48.Rf6 Ke7 49.Qd6) 1–0. Stabenow,Juergen – Diener,Rudolf, corr ICCF–T/19–F, 1979.

6.Be2 Nf6 7.0-0 Be7 8.c4 0-0 9.d4 e4 10.Nfd2 d5 11.Qc2 Be6 12.a4 Nbd7 13.c5 Ne8 (13...Qc7 14.Nc3=) 14.Nc3 (14.f3 f5=) 14...f5 15.Qb3 Qc7 16.g4 (16.f3 ef3 17.Nf3 Nef6=) 16...fg4 17.Nce4 Bf5 (17...Kh8 18.Rfe1=) 18.Ng3 Bg6 (18...Be6 19.Rfb1=) 19.e4 (19.Bg4 Kh8+=) 19...Bf7 20.ed5 (20.Bg4 Ndf6 21.Bf5 de4+=) 20...Bd5= 21.Bc4 Ndf6 22.Nde4 (22.f3 gf3 23.Nf5 Kh8 24.Nf3 Bc4 25.Qc4 Nd5=) 22...Rd8 (22...Bc4 23.Qc4 Nd5 24.Rfe1=+) 23.Nc3 Qf4 (better 23...Bc4!? 24.Qc4 Nd5=) 24.Nd5 Nd5 (24...cd5 25.Be2+=) 25.Rae1 (25.Qb7!? Qf6 26.Rae1 Rf7+-) 25...Bf6 Exerts pressure on the backward pawn (25...Rd7!?+=) 26.Re4+/- Qc7 27.Rfe1 g6 28.Qd1 (28.Rg4 Kh8+/-) 28...Qd7 (28...h5!?+=) 29.Qg4+/- Qg4 30.Rg4 Ng7 31.Bd5 (31.Ne4 Nf5 32.Nf6 Rf6+/-) 31...Rd5 32.Ne4 Nf5 (32...Bd4? 33.Bd4 Rd4 34.Nf6 Rf6 35.Rd4+-) 33.Nf6 Rf6 34.h4 Kg7 35.h5 Kf7 36.Re5 Ne7 (36...gh5 37.Rge4+/-) 37.hg6 hg6 38.Reg5 (38.Rge4!? Nf5 39.Rd5 cd5 40.Re5+/-) 38...Rf3+= 39.Kg2 Rb3 40.Bc1 Rb4 41.Be3 (41.Rd5 cd5 42.Rh4 Ra4=) 41...Ra4= 42.Rf4 Kg7 43.Re5 Nf5 44.Rd5 cd5 45.Rg4 Kf6 46.Kf1 Ra1 47.Ke2 Ra2 48.Kd3 Ra3 49.Ke2 Rb3 50.Rf4 (50.Bg5 Kf7=) 50...Rb4 (50...g5 51.Rf3=+) 51.Rg4 b6 52.cb6 Rb6 53.Rg1 (53.Bg5 Kf7=) 53...Re6 54.Kd3 Ne3 55.fe3 Re4 0-1. zembelek (2035) - Bliksem (2040), Rated Blitz game, lichess.org, 2015.

6.c4 Bc5 7.g3 (7.Nc3 d6=) 7...Ne7 (7...Qb6 8.Bc3 d6 9.d4=) 8.Nc3 (8.Bc3 Qa4=) 8...d5=+ 9.cd5 cd5 10.Bg2 (10.Rc1 Bb4=+) 10...e4 (10...Nbc6 11.d3-/+) 11.Nh4 Be6 12.Qb3 Kf7 (12...Qa6 13.Bf1 Qc6 14.Bb5+–) 13.Qb7-/+ Opening the b–file gets Black a lot of play 13...Nbc6 14.Qb5 Rhb8 15.Qa5 Ra5 16.0-0-0 (16.Nd1 g5 17.Bc3 Nb4–+) 16...Nb4 (16...Ne5!? 17.Bf1–+) 17.d4-/+ Bd6 18.Kb1 (18.a3 Nd3 19.Rd3 ed3-/+) 18...Nd3–+ 19.Rd3 ed3 20.Rd1 Bb4 21.Ka1 Rba8 22.Rd3 Bc3 (23.Rc3 g5–+ (23...Ra2?! 24.Kb1–+)) 0–1. Brzoza,Miroslaw – Mus,Roman, corr 1. AMM Poland, 1991.

6.c4 d5 =.

6.Be2 d6 7.0-0 Be6 8.c4 Ne7 9.d4 e4 10.Nfd2 f5 11.f3 d5 12.Nb3 Qc7 13.Nc5 Bf7 14.Nd2 Ng6 15.cd5 Bd5 (15...cd5!? 16.Bb5 Nc6+=) 16.fe4+/– fe4 17.Nce4 (worse is 17.Nde4 b6-/+) 17...Ra2 18.Ra2 Ba2 19.Bc4 Bc4 20.Nc4 Be7? (better is 20...b5 21.Ne5 Ne5 22.de5 h5+/–) 21.d5+- cd5 22.Qd5 Rf8 (22...Qc6 23.Ncd6 Kd7 24.Qf5 Kc7 25.Qa5 Kd7 26.Nc5 Qc5 27.Qc5 Nc6 28.Bg7 Rd8+-) 23.Ncd6 Bd6 24.Nd6 (24.Qd6?! Rf1 25.Kf1 Qc4 26.Kf2 Qc2 27.Kg3 Qe4 (worse is 27...Qb2 28.Qb8 Kd7 29.Nc5 Kc6 30.Qc8 Kd5 31.Qb7 Qb7 32.Nb7+=) 28.Qb8 Kd7=) 24...Ke7 25.Nf5 Rf5 (25...Ke8 26.Ng7 Qg7 27.Bg7 Rf1 28.Kf1+-) 26.Rf5 (26.Ba3 Ke8 27.Qg8 Rf8 28.Bf8 Ne7 29.Be7 Ke7 30.Qg7 Kd6 31.Rd1 Ke6 32.Qc7 Kf6 33.Rd6 Kf5 34.Qa5 Ke4 35.Qd5 Ke3 36.Qe5#) 26...Ke8 (26...Nd7 27.Qg8 Ngf8+-) 27.Qg8 Kd7 28.Rd5 (28.Rd5 Ke7 29.Qg7 Ke6 30.Qc7 Kd5 31.Qb8+-) 1–0. Dziel,Jaromir – Gugulski,Marcin, corr 2AMM Poland, 1994.

7.Bc3 Qc7 8.0-0 =.

7.c4 dc4 8.Bc4 e4 =.

8.Bc3 Qc7 9.d4 e4 -+.

8.c4 e4 9.Nd4 =.

8.c4 Be6 9.cd5 cd5 10.Qb3 Bb4 11.a3 (11...Bd6 12.Qb7+/–) 1–0. Woschkat,Karl_Heinz (1835) – Kondziela,Andreas, VM2001 (VR Gr.2), 2001.

8.c4 Ne7 9.d4 e4 10.Nfd2 Qb6 11.Qc2 Qc7 12.h3 0-0 13.c5+= Bh2 14.Kh1 Nd7 15.Nc3 f5 16.f4 Bg3= 17.a4 Nf6 18.Nb3 Ng6 19.Bd1 Qf7 20.Ne2 Nh5 21.Kg1 Bh4 22.Kh2 Re8 23.g3 Bd8 24.Ng1 Nf8 25.Qe2 Nf6 26.a5 Ne6 27.Bc3 Nc7 28.Qc2 Nb5 29.Be1 Qg6=+ 30.Kg2 Be6 31.Be2 Kh8 32.Qd1 Bc7 33.Qc1 h5 34.h4 Bg8 35.Nh3 Ra7 36.Ng5 Ng4 37.Bd2 Rf8 38.Bg4 fg4=+ 39.Bb4 Bd8 40.Qd2 Nc7 41.Qe2 Ne6 42.Ne6 Qe6 43.Rh1 Bh7 44.a6 Be7 45.Bc3 Rb8 46.ab7 Rab7 47.Nd2 Qf6 48.Ra5 Rb5 49.Ra3 Qf5 50.Ra6 Qe6 51.Rha1 Qd7 52.Qd1 Qc8 53.R1a4 Bg6 54.Ra7 R5b7 55.R7a6 Be8 56.Ra3 Qf5 57.Ra1 (57.Rb3 Rb3 58.Nb3 Qc8=+) ½–½. Piszcz,Kazimierz – Brzoza,Miroslaw, corr 2. AMM Poland, 1994.

8.d3 c5 9.Nbd2 Nc6 10.Nb3 Qb6 11.Nfd2 Nge7=+ 12.c4 d4 13.Ne4+= Na5 14.ed4 ed4 15.Bd4 cd4 16.c5 Bc5 17.Nec5 Nb3 18.Nb3 Nd5 19.Bf3 Nc3 20.Re1 Kf7 21.Qc2 Be6 22.Bb7 Ra3 23.Bf3 Rc8 24.Qd2 g5 25.h3 Bb3+= 26.ab3 White gets strong initiative 26...Rb3 27.Bh5 Kg7 28.Re7+= Kh8 29.Bg4 Rb8 30.Qe1 Qc6 31.Bf3+/– Qc8 32.Kh2 Qc5?? 33.Raa7+- Qd6 34.g3 Kg8 35.Rg7 (35...Kh8 36.Rh7 Kg8 37.Rhe7+/–; 35.Re8 Re8 36.Qe8 Qf8+-) 1–0. Gruszczynski,Boleslaw – Mus,Roman, corr 1. AMM Poland, 1991.

9.Bc3 Qc5 =.

9.Bc3 Qc7 10.Nbd2 =+.

9.c4 Be6 =.

9.Nbd2 0-0 10.c4 =+.

9.Nbd2 0-0 10.d4 e4 11.Nb3 -/+.

9.Nbd2 Be6 10.Nb3 Qc7=+ 11.e4 d4 12.Nh4 c5 13.c4 Nbc6 14.a3 0-0 15.Bg4 Bf7 16.Bc1 b6 17.Qf3 Rfb8 18.Qg3 Nd8 19.Nd2= b5 20.cb5 Rb5 21.a4 Rba5=+ 22.Bd1 Rb8 23.Nc4= Ra6 24.Nd6 Qd6 25.f4 Ndc6 26.f5 Kh8=+ 27.Qh3 Na5 28.g4 Nb3 29.Bb3 Rb3 30.g5 Qd7 31.gf6 gf6 32.Ra2 Rb8 33.Rg2 Rg8 34.Rg8=+ Ng8 35.Ba3 c4-/+ 36.dc4 d3 37.Bc5 Ra4 38.Rd1 Rc4 39.Bf2 Re4 40.Rd3 Rg4 41.Qg4 Qd3 42.Qb4 Bc4 (43.Kg2 Qe4 44.Kg1 Qe2-+) 0–1. Pegiel,Marek – Mus,Roman, corr 2. AMM Poland, 1994.

9.Nbd2 Be6 10.c4 0-0 =.

9.Nbd2 Be6 10.c4 Nd7 11.h3 0-0=+ 12.Qc2 Ra7 13.Rfc1 b6 14.a4 Nc5 15.Bc3 White gets deadly initiative 15...Qa6 16.d4 Bf5 17.Qd1 Nd3 18.Bd3+= Bd3 19.de5 fe5 20.Be5 Be5 21.Ne5 dc4 22.Ndc4 Bc4 23.Nc4 Nd5 24.Ne5+- (24...Rd8 25.Nc6+- (25.Rc6?! Qa5+-)) 1–0. Dziel,Jaromir – Mus,Roman, corr 2. AMM Poland, 1994.

7.0-0 b5 8.c4 =.

7.0-0 d5 8.d4 e4 9.Bc3 =.

7.0-0 Be6 8.Nc3 Nd7 9.a3 Nh6 10.Ne1 Nf7 11.Nd3 d5 The pressure on the isolated pawn grows 12.Nc1 Bd6=+ 13.Bg4 Ke7 14.Nb3 Qc7 15.Be6 Ke6 16.e4 d4 17.Qg4 Ke7 18.Ne2 g6 19.Nec1 Rag8 20.Nd3 h5 21.Qg3 Ng5 22.f3 h4= 23.Qe1 Ne6 24.Kh1 g5 25.Qe2 Ndf8 26.a4 Nf4 27.Qd1 N8g6 28.Nbc1 Qd7 29.Rf2 Nd3 30.Nd3 Nf4 31.Qf1 (31.Nf4 gf4 32.h3 Kd8=) ½–½. Wlosek,M – Gugulski,Marcin, corr 2. AMM Poland, 1994.

7.0-0 Be6 8.c4 d5 9.cd5 Bd5 10.d4 =.

7.0-0 Be6 8.c4 e4 9.Nd4 Bf5 +=.

7.0-0 Be6 8.c4 Ne7 9.d4+= e4 10.Nfd2 f5 11.f3 d5 12.Nb3 Qc7 13.Nc5 Bf7 14.Nd2 Ng6 15.cd5+= Bd5 16.fe4+/– fe4 17.Nce4 Ra2 18.Ra2 White gets the initiative 18...Ba2 19.Bc4 Bc4+= 20.Nc4 Be7? 21.d5+- cd5 22.Qd5 Rf8 23.Ncd6 Bd6 24.Nd6 Ke7 25.Nf5 Rf5 26.Rf5 Ke8 27.Qg8 Kd7 28.Rd5 (28...Qd6 29.Rd6 Kd6 30.Qb8 Ke6 31.Qg8 Kd6 32.Qh7+-) 1–0. Dziel,Jaromir – Gugulski,Marcin, corr 2. AMM Poland, 1994.

7.c4 e4 8.Nd4 =.

7.c4 Be6 8.0-0 Ne7 9.Bc3 Qa4= 10.d3 Nd7 11.Qd2 d5 12.Bd1 Qa6=+ 13.cd5 Nd5 14.d4 e4 15.Be2 Qb6 16.Ne1 Bd6 17.f3 ef3 18.Bf3 0-0 19.a4 Nc3 20.Nc3 Ra5 21.Nc2 Qc7=+ 22.g3 Rfa8 23.Rfb1 Nb6-/+ 24.Ne4 Be7 25.Nc5 Bc5 26.dc5 Rc5 27.Qb4? Rc2-+ 28.Qb6?? Qb6 29.Rb6-/+ Bc8 30.Bd1 Rc3 31.Bb3 Kf8 32.Rd1 Ke7 33.Kf2-/+ Ra5 34.e4 Re5 35.Re1-/+ Kd6 36.Bg8 h6 37.Rbb1 Kc7 38.Bh7 Rc4 39.Rb2 Ra4 40.h4 Be6 (41.Rd1 h5-+) 0–1. Gugulski,Marcin – Mus,Roman, corr 2. AMM Poland, 1994.

5.Nf3 d5 6.Be2 Qb6 7.Qc1 Nd7 8.0-0 Ngf6 9.d3 Bd6 10.Nbd2 0-0 11.c4 dc4 12.Nc4 Qc7 13.Nd6 Qd6 14.Rd1 b5 15.Nd4 Bb7 16.Bf3 Rfc8 17.Ne2 h5 18.Nc3 h4 19.h3 Ne5 20.Be2 b4 21.Ne4 Ne4 22.de4 c5?? (better is 22...Qc7 23.Qc5 f6+/–) 23.Rd6+- (23.Rd6 Ng6 24.Qc4+-) 1–0. exp2005 – martijn011, kurnik, 2011.

5.Nf3 d5 6.Be2 c5 7.0-0 Nd7 8.d3 (8.a4 Ngf6+=) 8...Ngf6= 9.Qd2 (9.c4 Bd6=) 9...Qc7 (9...Bd6 10.c4=) 10.h3 Bd6 11.Nc3 Qb6 12.Rfb1 0-0 13.a4 Qd8 14.Nb5 Be7 15.Ne5 Nb8 16.Qd1 Nc6 17.c4 Nd7 18.Nc6+= bc6 19.Nc3 d4 20.Ne4 Nf6 21.Bf3 Ne4 22.Be4 Bf6? 23.Bc6 de3?? 24.Ba8+- ef2 25.Kh1 Bb2 26.Rb2 Qd4 27.Raa2 Bd7? 28.Bf3 e5 29.Rf2 Be6 30.Qe2 Rb8 31.Rb2 (31…Re8 32.Qe4+-) 1–0. Ruhle,Ernst Albrecht – Schiffler,Gerhard, Wch Seniors Bad Liebenzell, 1996.

5.Nf3 d5 6.Be2 Nf6 7.Bc3 Bb4 8.Bb4 Qb4 9.0-0 =.

5.c4 e5 6.Nf3 d6 7.Be2 Be7 8.0-0 Be6 9.Nc3 Nbd7 10.Qc2 b5 (better 10...Nb6!? 11.Qb3 0-0=) 11.cb5+- cb5 12.d4 (12.Nb5!? 0-0 13.Rfc1+-) 12...b4= 13.de5 (13.Nb5 0-0 14.de5 Rfc8=) 13...bc3 (better 13...Ne5!? 14.Ne4 0-0=+ (14...Ba2? 15.Be5 de5 16.Bc4+-)) 14.Bc3+- Qa4 (better 14...Rc8!? 15.Ba5 Rc2 16.ef6 Bf6+-) 15.Qa4+- Ra4 16.ef6 Nf6? (16...Bf6 17.Bf6 gf6 18.Nd4+-) 17.Nd4 (better 17.Bb5 Bd7 18.Ba4 Ba4 19.Rfb1+-) 17...Ba2?? (better 17...0-0 18.Nc6 Re8+-) 18.Bb5 Kf8 19.Ba4 g6 (19...Be6 20.Rfb1 g6 21.Bc6+-) 20.Ra2 Kg7 21.Nc6 Bf8 (21...Rc8 22.Bd4 Kf8 23.Rc2+-) 22.Rb1 d5 23.Rb7 Bc5 24.Bb3 Rf8 25.Bd5 g5 26.Ne5 (26.Ra6 Bd6 27.Nd8 Be5 28.Be5 g4 29.Bf6 Kh6 30.Be5 Kg5 31.Bf4 Kf5 32.Nf7 Rf7 33.Rf7) 26...Bd6 (26...Nd5 27.Bb2 Rc8 28.Nf7 Kf8 29.Ng5 Ke8+-) 27.Nf7 Rf7 28.Rf7 Kg6 29.Rf6 Kg7 (29...Kh5 30.Bf7 Kh4 31.Rh6 Kg4 32.Be6) 30.Rd6 Kf8 31.Ra7 (31.Bf6 h5 32.Ra8) 31...g4 (31...Ke8 32.Bc6 Kf8 33.Rd8) 32.Rd8 1–0. RichardSommer (1940) – DerAmateur (1980), lichess.org, 2020.

5.Nf3 (--> 4.Nf3 Nf6 5.e3).

5.Qc1 e6 6.e3 f6 7.Nc3 Bb4 8.Rb1 Ne7 (8...d5!?+=) 9.Ne4+/– Qc7 (9...0-0 10.a3 Ba5 11.Bf6+/–) 10.Bf6+- Ba3 11.Bb2 d5 (11...Bb2 12.Qb2 (12.Rb2?! d5 13.Ng3 0-0+/–) 12...0-0 13.Bd3+-) 12.Ba3 de4 13.Ng5 Qe5 (13...Qa5 14.Be7 Ke7 15.Ne4+-) 14.f4 (better is 14.h4+-) 14...Qf6?? (14...ef3 15.Nf3 Qa5+-) 15.Ne4 Qh6 (15...Qg6 16.Bd3 Qg2 17.Nd6 Kd7 18.Be4+-) 16.Nd6 Kd8 (16...Kd7 17.Nf7 Qh4 18.g3 Qf6 19.Nh8 Qf8+-) 17.Nf7 Kd7 18.Nh6 (18.Nh6 gh6 19.Rb3+-) 1–0. pierred – anony, internet, 2015.

5.Qc1 Nf6 6.e3 d5 7.c4 Bg4 8.Bf6 gf6 9.cd5 cd5 10.Nc3 e6 11.Rb1 Qc7 12.Qb2 Bf3 13.gf3 Nc6 14.Qb7 Ra7 15.Qc7 Rc7 16.Rg1 Kd7 17.Bb5 Bd6 18.f4 Rhc8? (Better is 18...Ke7!?+/–) 19.Rg7+- Ke7 20.Bc6 Rc6 21.Rh7 d4 22.Nb5 d3 23.Nc3 Rc4 24.f3 Bb4 25.Rb3 Bc3 26.dc3 Rc3 27.Rc3 Rc3 28.Kd2 Rc2 29.Kd3 Ra2 ½–½. Woschkat,Karl_Heinz – Teknis,Joannis, IECG, 1998.

5.Bc3 Qb6 6.e3 Bg4 7.Be2 Nd7 8.a4 e6 9.a5 Qc7 10.0-0 Ngf6 11.h3 Bh5 12.d3 Bd6 (12...Bf3!? 13.Bf3 Bd6=) 13.g4+= Bg6 (13...Ng4 14.hg4 Bg4 15.Kg2+= (15.Bg7? Rg8-+)) 14.g5+/– Nh5 (14...d4!? 15.Bd4 e5+=) 15.Nfd2+- Bh2 16.Kh1 Ng3 (16...Nf4 17.ef4 Bf4 18.Bg7+-) 17.fg3 Qg3? (17...Bg3 18.Bg7 Rg8+-) 18.Nf3 (18.Bg7?! Rg8 19.Bg4 Rg7+/–) 18...Qh3 19.Nh2 h6 (19...Rg8 20.Qc1+-) 20.Bg7 Rh7 (20...hg5 21.Bh8 Qh8 22.c3+-) 21.gh6 (21.Rf3 Qh4 22.gh6 Qd8+-) 21...0-0-0 (21...Qe3 22.Qe1+-) 22.Rf3 (22...Qh4 23.Rf4+-) 1–0. market (1965) – Gambit_warrior (1655), GameColony.com, 2002.

5.e3 b5 6.Be2 =.

5.e3 Qb6 6.Bc3 Nf6 7.Bf6 ef6 8.c4 dc4 9.Bc4 Qb2 10.Nc3 Qb4 11.Qb3 Qb3 12.Bb3 (12.ab3?? Ra1 13.Nd1 Bb4-+) 12...Bb4 13.0-0 (13.Ke2 Ke7=) 13...Bc3 (13...Bf5 14.e4 Bg4 15.Nd4=) 14.dc3 0-0 15.Rfd1 Nd7 16.h3 Ne5 17.Nd4 c5 18.Ne2 (18.Nb5 c4 19.Bc2 Bd7+/-) 18...c4 19.Bc2 b5 (19...Ra3 20.f4 Nc6 21.Be4+=) 20.a4 (20.a4 ba4 21.Ra4 Ra4 22.Ba4+=) 1-0. kianas (2055) - riverriver (2245), ChessWorld.net, 2013.

5.e3 Qb6 6.Bd4+= c5 7.Be5 Bg4 (7...Nc6 8.Nc3 Ne5 9.Ne5+=) 8.Nc3+= Qe6 9.Rb1?? (better is 9.Bb8 Rb8 10.Bb5 Kd8 11.Ng5 Bd1 12.Ne6 fe6 13.Rd1+=) 9...Bf3-+ 10.Qf3 Qe5 11.Nd5 (11.Qd5 Qd5 12.Nd5 Ra2 13.Rb7 Ra1 14.Ke2 Nc6-+) 11...Ra7 (11...Ra2 12.Rb7 Ra1 13.Ke2-/+) 12.Nc3 (12.Bb5 Nc6 13.Bc6 bc6-/+) 12...Qc7 (12...Nc6 13.Bb5 Qc7 14.Bc6 bc6 15.0-0-/+) 13.Nb5 Qb6 14.Qf4 (14.Bc4 Nf6-/+) 14...Na6-+ 15.Nc3 Qd6 (15...Qf6 16.Ba6 Qf4 17.Bb5 Kd8 18.ef4 e6+/–) 16.Qa4? (better is 16.Ba6 Ra6 17.Qd6 ed6 18.Rb7=+) 16...Kd8-+ 17.Qa5 Kc8?? (better is 17...Qc7 18.Rb6 Nf6-+) 18.Nb5+/– Qb8 19.Na7 Qa7 20.Rb6 c4? (better is 20...Kd7+/–) 21.Bc4+- Nf6 22.Ba6 ba6 23.Ra6 Qb8?? (23...Qb7 24.Ra8 Kd7+-) 24.Ra8 e6 25.Qc3 Kb7 26.Rb8 Kb8 27.0-0 Nd5 28.Rb1 Nb4 29.Qc6 Be7 30.c4 Rd8 31.c5 Bc5 32.Qc5 (32…Rd4 33.Qd4+-) 1–0. Woschkat,Karl_Heinz – Radford,Carl, compuserve, 1996.

5.e3 Bf5 6.Nc3 Nf6 7.Nd4 Bg6 8.g3 (8.f4 e6=) 8...e5=+ 9.Nb3 Qc7 10.Bg2 Bd6 11.0-0 0-0 12.d3 Nbd7 13.Ne2 c5 (13...Rfe8 14.c4-/+) 14.Kh1 (14.Nc3 Qc6=+) 14...Ra4 (better 14...c4!? 15.dc4 dc4-/+) 15.Nc3= Ra7 (better 15...Ra6!?=) 16.Nb5+- (16.Nd5?! Nd5 17.Bd5 Nb6=+) 16...Qb8 17.Na7 Qa7 18.Nd2 (18.c4 Qa6+-) 18...b5 19.f4 ef4 20.ef4 Re8 21.f5 (21.g4!? h6 22.g5 hg5 23.fg5+-) 21...Bh5+= 22.Nf3 Ne5 23.Qd2 d4 24.Ne5 Re5 25.a3 (better 25.c3 Re2 26.Qc1+=) 25...Re2-/+ 26.Qg5 (better 26.Qc1 Qa4 27.c4-/+) 26...Rc2-+ 27.Bc1 Qe7 28.Bf4 (28.Be4 Be2 29.Bf4 Bd3 30.Bf3-+) 28...Qe2 29.Rg1 Bf3 (29...Bf3 30.Bd2 Ng4 (30...Qd2?! 31.Qd2 Rd2 32.Bf3-/+) 31.Qg4 Bg4-+) 0–1. pete59 (1650) – pions (1705), gameknot.com, 2018.

5.e3 Bf5 6.c4 e6 7.cd5 ed5 8.Be2 Nd7 9.0-0 Ngf6 10.d3 (10.Nd4 Bg6=) 10...Be7 (10...Bd6 11.Qb3=) 11.Nbd2 (11.Bc3 Qa4=) 11...0-0 12.Nd4 Bg6 13.f4 h6 14.a4 (14.f5 Bh7=) 14...Bb4 (14...Rfe8 15.N2b3 Qd8 16.f5=) 15.N2b3 Qd8 (15...Qc7 16.Nc2 Bd6 17.a5=) 16.Nc2 Be7 (16...Bd6 17.a5=) 17.a5 Ne8 (17...Re8 18.Rb1=) 18.Ncd4 (18.Rb1 Nd6+=) 18...Nc7 (18...c5 19.Nb5=) 19.Qc2 (19.f5 Bh7+=) 19...Re8 (19...c5 20.Nf3=) 20.e4 de4 (20...c5 21.Rac1=) 21.de4+= Bf6 (21...Bd6 22.f5 Bh7 23.Nf3+=) 22.Bd3 c5 23.e5 Bd3= 24.Qd3 cd4 25.ef6 Nf6 26.Nd4 Ne6 27.f5 Nd4 28.Qd4 Qd4 29.Bd4+= Red8 30.Bb6 (30.Bf6!? gf6 31.Rfb1+=) ½–½. Kucharkowski,Jens – Thorhauer,Rolf, CiF, 2003.

5.e3 Bf5 6.Be2 b5=.

5.e3 f6 6.c4 Bg4 (6...e6 7.Nd4=) 7.cd5 (7...cd5 8.Qb3+=) +=. marekt – Kingslayer2, ChessWorld.net, 2003.

5.g3 g6?? 6.Bh8 f6 7.Bg2 (better 7.Ng1!? Nh6+-) 7...Nh6 8.0-0 Nf7 9.Bf6 ef6 10.d4 (10.Re1 Nd6+-) 10...Bh6 (10...Bf5 11.Nh4 Be6 12.Qd3+-) 11.e3 Nd6 12.Qd3 (12.Re1 Bf5+-) 12...Na6 (12...Bf5 13.Qb3+-) 13.c3 (13.Qb3 Bf5+-) 13...Bf5 14.Qe2 Kf7 (14...Qb5 15.Qb5 Nb5 16.Nfd2+-) 15.Nh4 (15.Rc1 Kg8+-) 15...Be6 (15...Bb1 16.Rab1 Qc3 17.Rb3+-) 16.Rc1 (16.Qb2 Qc7+-) 16...Nc7 (16...Kg7 17.Nf3+-) 17.Nd2 Qa3 18.Nb3 b6 19.Qd3 (19.Nd2 Qa4+-) 19...Kg7 20.Nd2 (20.Re1 Ncb5+-) 20...g5 (20...Ncb5 21.Qc2 g5 22.Nhf3+-) 21.Nhf3 Bf5 22.Qe2 Ncb5 23.Nb3 Ne4 24.Qe1 Qa4 25.Bf1 Ned6 26.Nfd2 Na3 27.Qd1 Be6 28.f3 (28.Bg2 g4+-) 28...g4 29.f4 Qa7 (29...Re8 30.Bd3+-) 30.Bd3 f5 31.h3 gh3 32.Qh5 Qe7 (32...Nac4 33.Qh3 Qf7 34.Nf3+-) 33.Qh3 Bd7 34.Kf2 White fights for the Initiative 34...Re8 35.Re1 Ne4 (35...Qe6 36.Nf3+-) 36.Be4 fe4 37.Qh5 Rf8 (37...Qd6 38.Rh1 Rf8 39.g4+-) 38.Rh1 Qg5 39.Qg5 Bg5 40.Rh2 Be7 41.Rah1 Rh8 42.Nb1 (42.Rh6 Bf6+-) 42...Nc4 43.N3d2 Nb2 (43...Nd6 44.a3+-) 44.Rh6 (44.c4!? Bg4+-) 44...Nd1 45.Rd1 Deflection from h6 (45.Ke2!? Bg4 46.Ke1 Ne3 47.Rc6 Nc2 48.Kf1+-) 45...Kh6+- 46.c4 Rc8 47.Rc1 Kg6 48.cd5 cd5 49.Rc8 Bc8 50.Nb3 (50.Nc3 Bb7+-) 50...Bd7 51.Nc3 Bc6 52.g4 Bb4 53.Ne2 (53.Nb1 h5 54.gh5 Kh5+-) 53...h6 (53...h5 54.gh5 Kh5 55.Ng3 Kg4+=) 54.Ng3 White prepares f5 (better 54.Na1!?+-) 54...Bd7=+ 55.f5 Kg5 56.Kg2? (better 56.Nh5=+) 56...Kg4-+ 57.f6 Bd6 58.Nh1 (58.Ne2 Kf5-+) 58...Kg5 59.f7 h5 60.Nf2 Kf6 61.f8Q (61.Nc1 Kf7 62.Ne2 b5-+) 61...Bf8 62.Kg3 Kf5 63.Nd2 Bb4 64.Nf1 (64.Nb3 Bb5-+) 64...Bb5 65.Nh2 (65.Kg2 h4 66.Nh2-+) 65...Bd2 66.Nh3 (66.Nf3 Be3 67.Nh4 Kf6-+) 66...Be3 67.a4 (67.Kg2 Bd4 68.Nf1 h4-+) 67...Ba4 (67...Be8 68.Kg2-+) 68.Nf1 Bd4 69.Nd2 (69.Kh4 b5 70.Ng3 Ke5-+) 69...b5 70.Ne4 (70.Kg2-+) 70...de4 71.Nf4 Be5 72.Kh4 (72.Kh3 Kf4 73.Kh2 Kg4 74.Kh1 Kf3 75.Kg1 e3 76.Kh1 e2 77.Kg1 e1Q) 72...Bf4 73.Kh5 (73.Kh3 b4 74.Kg2 b3 75.Kf2 b2 76.Kf1 b1Q 77.Kg2 e3 78.Kf3 Qf1) 73…b4 (73...b4 74.Kh4 e3 75.Kh3 e2 76.Kg2 e1Q 77.Kf3 Bc6) 0–1. justnow (1880) – aficionado (2120), gameknot.com, 2020.

6.Bc3 Qc7 7.Be5 =.

6.c4 dc4 7.Bc4 b5 8.Bc3 Qa6 9.Be2 Bg4 10.a4 Bf3 11.gf3 Qb7 12.Qb3 Nd5 13.Bb2 b4 14.d4 e6 15.Nd2 Qc7 16.f4 Nd7 17.Bf3 Qd8 18.Rg1 Qh4 19.a5 Rg8 (19...Qh2?? 20.Rh1 Qh1 21.Bh1+-) 20.Be4 Qh5 (20...Qh2?? 21.Rh1 Qh1 22.Bh1+-) 21.Rg2 Ra6 22.Qd3 Nc7 23.Bh7 Rh8 24.Be4 Ra5 25.Ra5 Qa5 26.Bc6 Rh3 27.Nf3 b3 28.Kd1 Qa2 29.Qc3 Nd5 30.Bd5 ed5 31.Nh4?? (better is 31.Nd2+/–) 31...Rh4-+ (32.Qc8 Ke7-+) 0–1. Woschkat,Karl_Heinz – Appeldorn,Dirk, SE001 DESC, 1999.

6.c4 Bg4 7.Bc3 Qc7 8.Bf6 gf6 9.cd5 cd5 10.Nc3 e6 11.h3 Bh5 12.Rc1 Nc6 13.g4 Bg6 14.Qb3 h5 15.Rg1 Be4 16.Ne4 de4 17.Nd4 Nd4 18.Rc7 Nb3 19.ab3 hg4 20.hg4 Ra1 21.Ke2 b5 22.Rb7 b4 23.Rb8 Kd7 24.Rb7 Kd8 25.Rf7 Be7 26.f4 Ke8 27.Rg7 Kf8 28.Rg6 Kf7 29.f5 Rh2 30.Rg2 Rh1 31.Rf2 Rc1 32.g5 fg5 33.Re6 g4 34.Re4 g3 35.Rff4 Bd6 36.Rc4 Re1 37.Ke1 g2 (38.Ke2 g1Q-+) 0–1. Longo,Andrew (1805) – Bendig,Frank (2090), IECG, 2000.

6.Bd3 g6 7.0-0 Bg7 8.Bc3 Qd8 9.Bf6 ef6 (9...Bf6 10.c3=+) 10.Nc3 0-0 11.e4 (11.Be2!?=) 11...de4-/+ 12.Ne4 f5 13.Nc3 Nd7 14.Re1 Nf6 (14...Nc5 15.Qb1-/+) 15.Rb1 (15.Qb1 Re8=+) 15...Be6 (15...b5 16.Ne5 Qd6 17.Qf3=+) 16.a4 (16.Rb7 Nd5 (worse 16...Ba2 17.Na2 Ra2 18.Bc4+/-) 17.Ne2 Qc8=) 16...Nd5 (16...Qc7 17.Rb4=+) 17.Nd5= (worse 17.Rb7 Nc3 18.dc3 Bc3-/+ (worse 18...Ra4 19.Nd4=+)) 17...Bd5 18.c4 (18.Rb7 Ra4 19.Rb1 Ra2=+) 18...Be6 (18...Bf3!? 19.Qf3 Ra4-/+) 19.Bf1 f4 (19...Ra7 20.d4=) 20.d4 Bf5 (better 20...Ra7!?=) 21.Rb7+/- Be4?? (better 21...Bc8 22.Rb1 Bf5+/-) 22.Re4+- 1-0. black_bishop_88 (2425) - Frogkiller (2380), lichess.org, 2020.

6.Be2 Bf5 7.0-0 Nbd7 8.Nd4 Bg6 9.Nb3 Qc7 10.c4 e5 11.Nc3 Bd6 (11...dc4 12.Bc4 Bd6 13.Be2=+) 12.h3 (12.cd5 Nd5 13.Nd5 cd5=) 12...0-0 (12...dc4 13.Bc4 b5 14.Be2=+) 13.Rc1 (13.cd5 Nd5 14.Nd5 cd5=) 13...Qb8 (13...dc4 14.Bc4 b5 15.Be2-/+) 14.cd5=+ Nd5 15.Nd5 cd5 16.Bb5 (16.Ra1=+) 16...Nf6 (better 16...Ra2!? 17.Bc3 Nb6-/+) 17.a4= Rd8 18.d4 ed4 (18...e4 19.a5=) 19.Nd4+= Ne4 20.Qb3 (better 20.Nf3+=) 20...Nd2-/+ 21.Qc3 Nf1 (21...Bh2!? 22.Kh1 Nf1-/+) 22.Nc6=+ Be5?? (better 22...d4 23.Qd4 Bh2 24.Kf1 Rd4 25.Nb8 Rd8=) 23.Ne5+- Ne3 (better 23...Be4 24.Rf1 f6+-) 24.Nc6?? (better 24.Ng6 d4 25.Ne7 Kf8 26.Qa3+-) 24...d4-/+ 25.Nd4 (better 25.Ne7 Kh8 26.Qb4-/+) 25...Qe5?? (better 25...Nd5 26.Qb3 Qf4-/+) 26.fe3 (26.Qe3 Qe3 27.fe3 Rac8+-) 26...h5 27.Nf3 Qc3 28.Rc3 Rd1 29.Kh2 (29.Kf2 Rb1 30.Ba3 Ra1+-) 29...Be4 30.Ng5 Bg6 (30...Bc6 31.Bc6 bc6 32.Rc6+-) 31.Rc7 Rad8 (31...Rd2 32.Ba1 Rd5+-) 32.Bd4 R1d4 (32...Rb8 33.Bc4 Rf8 34.Rb7+-) 33.ed4 f6 (33...Kf8+-) 34.Ne6 Rd6 35.Rg7 Kh8 36.Rg6 Re6 37.d5 Rd6 38.Bc4 (better 38.Rh6!? Kg7 39.Rh5 Rb6+-) 38...Kh7 39.Rg3 f5 (39...Kh6 40.Rb3 b6 41.Re3+-) 40.Re3 Kg6 41.Re6 Re6 42.de6 Kf6 43.Kg3 b6 44.Kh4 f4 (44...Ke7 45.Kh5 f4 46.Kg6+-) 45.Kh5 f3 46.gf3 Ke7 47.f4 Kf6 48.Kg4 (48.Kg4 Ke7 49.Kg5+-) 1-0. zembelek (2025) - Lunaticz (2000), Rated Blitz game, lichess.org, 2015.

6.Be2 Bg4 7.h3 Bh5 (7...Bf3 8.Bf3 Nbd7 9.Bc3=+) 8.0-0 (8.Bc3 Qa4=) 8...Nbd7 (8...b5=) 9.Nd4 (9.Nc3!?=) 9...Be2=+ 10.Qe2 (10.Ne2 e5=+) 10...e5 11.Nb3 Qb6 (11...Qa6 12.d3=+) 12.d3 (12.Nc3 Bb4=+) 12...Bd6 13.Nc3 (13.a4 Bb4=+) 13...0-0 14.e4 (14.Rfb1 Qc7=+) 14...d4 15.Nd1 (15.Nb1 Ra4-/+) 15...Ra6 (15...Ra4 16.c3-/+) 16.c3 (16.a4 Rfa8 17.a5 Qc7=+) 16...c5 (16...dc3 17.Nc3 Rfa8 18.Rfb1=+) 17.cd4 (17.Nc1 dc3 18.Nc3 Rfa8=+) 17...cd4 (17...ed4 18.Qc2-/+) 18.f3 (18.f4 Rc8=) 18...Nh5-/+ 19.Kh2 (19.Qc2 Ng3 20.Rf2 f5=+) 19...Nf4 20.Qc2 Rfa8 (20...Qc6 21.Qc6 Rc6 22.Nf2-/+) 21.g3 (21.Bc1 Ne6-/+) 21...Ne6-/+ 22.Bc1 Qa7 23.Nf2 Ra2 24.Ra2 Qa2 25.Qa2 Ra2-+ 26.Kg1 Ndc5 27.Nc5 Nc5 28.Rd1 b5 29.Bd2 Na4 30.f4 f6 31.Kf1 b4 32.Ke1 b3 33.Rb1 b2 34.Bc1?? Ra1 (35.Rb2 Nb2-+) 0–1. Shakkimestari – smurilo (1845), internet, 2006.

6.c4 Nd7 7.Bc3 Qa4 8.Qa4 Ra4 9.cd5 Bf3 10.gf3 cd5 11.Bb5 Ra8 12.Rg1 f6 13.Bb4 Rd8 14.Nc3 e6 15.Bf8 Kf8 16.Na4 Ne7 17.Bd7 Rd7 18.Nc5 Rd6 19.Nb7 Rb6 20.Nc5 Kf7 21.f4 Ra8 22.a4 Nf5 23.Ke2 Nd6 24.Rgb1+/– Rb1 25.Rb1 Ra7 26.Rb6 Ke7 27.d4 e5 28.fe5 fe5 29.de5 Nc4 30.Re6 Kf7 31.Ra6 Ra6 32.Na6 Ne5 33.Nc7 (33...Nc4 34.Nd5+-) 1–0. Hoch,Hubertus (2165) – Walter,Mario (1885), RSX9E – A00 – Sokolsky–2, 2004.

6.c4 e6 7.Bc3 Qc7 8.h3 Bf3 9.Qf3 Nd7 10.d4 Ngf6 11.Bd3 dc4 12.Bc4 Bd6 13.0-0 0-0 14.Nd2 Nd5 15.Bb2 N7b6 16.Bb3 Na4 17.Bc1 Bb4 18.e4 Nf6 19.Nb1 e5 20.Bg5 ed4 21.Bf6 gf6 22.a3 Be7 23.Rd1 Qe5 24.Ba4 Ra4 25.Nd2 Rd8 26.Qd3 b5 27.Rdc1 Qe6 28.Nf3 Rda8 29.Rd1 Bc5 30.Qc2 Rc4 31.Qe2 f5 32.e5 f6 33.Re1 fe5 (33...Ba3?! 34.Qd3 Rca4 35.Nd4=) 34.Ne5 Rca4 (34...Ra3?! 35.Ra3 Ba3 36.Qd2=; 34...Ba3 35.Nc4 Qe2 36.Re2 bc4 37.Rea2+=) 35.Qf3 (35.Rac1!? Bd6 36.Nc6 Qe2 37.Re2 Ba3 38.Rd1-/+) 35...Bb4!-+ 36.Re2 Ra3 37.Ra3 Ra3 38.Nc6 Qd7 39.Ne5 Rf3 40.Nd7 Rb3 41.Re1 0–1. Schuelert,Peter – Bellmann,Herbert (2165), GER M083 corr, 1998.

6.c4 e6 7.cd5 ed5 8.a4 Nd7 9.Bc3 Qc7 10.d3 Ngf6 11.Nbd2 Bd6 12.Be2 0-0 13.h3 Bh5 14.a5 Rfe8 15.0-0 c5 16.Re1 d4 17.ed4 cd4 18.Bd4 Bb4 19.g4 Bg6 20.Qb3 Ba5 21.Rec1 Qf4 22.g5?? (22.Be3 Re3 23.fe3 Qe3 24.Kf1-/+) 22...Nh5?? (22...Bd2 23.Ra8 Ra8-/+ (< 23...Bc1 24.Qb7 Rf8 25.gf6 gf6 26.Rf8 Nf8 27.Qe7+=)) 23.Qb7=+ Qf5 24.Be3 Qh3 25.Nh2 Rab8 26.Qf3 Re3 27.fe3 Qg3 28.Qg3 Ng3 29.Kf2 Bd2 30.Rc7 Nf8 31.Kg3 Be3 32.Rc4 Bg5 33.Nf3 Bf6 34.d4 Be4 35.Ra5 Rb2 36.Bd1 g6 37.Kf4 Bf3 38.Kf3 Rd2 39.Ba4 Bd4 40.Rc2 Rc2 41.Bc2 Ne6 42.Rd5 Kg7 43.Bb3 Kf6 44.Ke4 h5 45.Rd4 Nd4 46.Kd4 Kg7 47.Ke5 f6 48.Kf4 Kh7 49.Bf7 Kh6 ½–½. Schueller,Rudolf (1865) – Koslowski,Volker (1985), T0076 DESC, 2003.

6.c4 e6 7.cd5 ed5 8.Be2 Nd7 9.0-0 Ngf6 10.Ne5 Ne5 11.Be5 Be2 12.Qe2 Be7 (12...Nd7 13.Bd4=) 13.d4 (13.d3 0-0=) 13...0-0=+ 14.Nd2 Qa6 15.Qd1 Qd3 16.Bf6 Bf6 17.Nf3 Qd1 18.Rfd1 Ra6 19.g3 (19.Rab1 b5=) 19...Rb8 (19...Rfa8 20.Rab1 R8a7 21.Rd2=+) 20.Rdc1 ½–½. Ganesan – Steuer, email 4AMM–F, 1998.

6.h3 Bf3 7.Qf3 Nd7 8.Nc3 e6 9.Qg3 Ne7 10.h4? (10.e4 Qb4 11.Bc1 d4 12.Ne2 Ng6 13.Qb3=+) 10...Nf5 11.Qh3 d4 12.ed4 Nd4 (12...Qb6!?) 13.Bd3 Nc5 14.0-0 Rd8 (14...Nd3 15.Qd3 0-0-0 16.Rad1 Qb4-/+) 15.Rfe1 Nd3 16.Qd3 Nf5 17.Qe2 (17.Qe4 Rd2 18.Qf4 Rd8! (18...Rc2?! 19.Qb8 Qd8 20.Qb7=+)) 17...Qb4 18.Rab1 Qh4 19.Ne4 Be7 20.Be5 b5 (20...Rd7 21.Rb3 Qh6 22.Rd3 Rd3 23.Qd3 b5=) 21.a4 ba4 22.Qc4 0-0 23.Qa4 Rd5 24.d4 Rc8 25.Rb6 (25.c3 c5 26.Rb5 cd4 (26...Rcd8 27.Bc7 Rf8 28.dc5 Rc8 29.Rb8=) 27.Rd5 ed5 28.Qd7 Rd8 29.Qf5 de4 30.cd4=) 25...c5 26.Qa6 Rdd8 27.dc5 Bc5 28.Nc5 Rc5 29.Re6 fe6 30.Qe6 Kh8 31.Qf5 Rcd5 32.g4 Qe7 33.c4 Rd2 34.Re4 Qf8 35.Qf8 Rf8 36.Bd4 Kg8 37.c5 Rb8 38.Be3 Rc2 39.Kg2 Rb3 40.Re5 Kf7 41.Kg3 Rc4 42.Rd5 g6 43.Rd7 Ke6 44.Rd6 Ke5 45.Rb6 (45.Kh4? Rbb4 46.f3 Rb3 47.Bg1 Rf3-+) 45...Ra3 46.Kh4 (46.Rb7 Rc5 47.Rh7 Rd5 48.Rb7=+) 46…Raa4 0–1. Sternik,Ryszard – Rosner,Dirk, email corr or006–01, 2001 (Sternik).

7.0-0 Qb6 8.Bc3 Bf3 9.Bf3 e5 10.d3 f5 11.Bd2 Ngf6 12.c4 e4 13.de4 de4 14.Be2 Bd6 15.Nc3 0-0 16.Qb3 Qb3 17.ab3 Be5 (17...Nc5 18.Ra8 Ra8 19.b4-/+) 18.Rab1 (18.b4 Rfd8+=) 18...Rfd8-/+ 19.Rfd1 Nc5 20.g3? (20.Be1 Rd1 21.Nd1 Ra2-/+) 20...Ra3 (better is 20...Rd2!? 21.Rd2 Bc3-+) 21.Na4 Nb3 22.Be1 Rd1 23.Bd1 Ra4 24.Bb3 Ra1 25.Ra1 Ba1 26.Bb4 Kf7 27.h3 Ke6 28.Kf1 g5 29.Ke2 h5 30.Kd2 Be5 31.Ke2 Nd7 32.Ba3 Bc3 33.f3 ef3 34.Kf3 Nf6 35.c5 Ke5 36.Bc4 g4 37.hg4 hg4 38.Kg2 Nd5 39.Kf2 Ke4 40.Bd5? (better is 40.Ke2-+) 40...cd5 41.Ke2 Be5 42.Kf2 Kd3 43.Bb4 Bc3 44.Ba3 Bd2 45.c6 (45.Kf1 Be3 46.Bb4 Ke4-+) 45...Be3 46.Kg2 bc6 47.Bd6 c5 48.Be5 c4 (48...c4 49.Kf1 c3-+) 0–1. mr5reasons1 (1630) – pho323 (1765), gameknot.com, 2012.

7.0-0 Bf3 8.Bf3 e5 9.c4 dc4 10.a4 Ngf6 11.Qc2 Nb6 12.Be2 (12.Na3 Ba3 13.Ba3 e4 14.Be4 0-0-0 15.Bf5 Kb8+/-) 12...Qd5 (12...Bb4 13.Na3=+) 13.Nc3 Qe6 (13...Qa5 14.f4 ef4 15.Rf4=) 14.a5+= Nbd7 (14...Nbd5 15.Na4 Nb4 16.Qc4 Qc4 17.Bc4+=) 15.Ne4 Ne4 16.Qe4 Nf6 17.Qc4 (17.Qc2!? Bd6 18.Bc4+/-) 17...Qc4+= 18.Bc4 Bd6 19.f4 (19.Rfb1 0-0+=) 19...ef4 20.Bf6 (20.Rab1 Ra5 21.Bf6 gf6 22.Rb7 0-0=) 20...gf6= 21.ef4 Kd7 22.g3 Bb4 The isolani on a5 becomes a target 23.a6 ba6 24.Ra6 Ra6 (24...Bd2?? 25.Rd1+-) 25.Ba6 Ra8 (25...Bd2?? 26.Rd1+-) 26.Bc4 Ke7 (26...Bd2?? 27.Rd1+-) 27.d3 Bc5 28.Kg2 Rb8 29.Re1 Kf8 30.Rc1 Rb2 31.Kh3 Bd4 32.Re1 c5 33.g4 Rf2 34.Kg3 Rd2 35.Rb1 Bf2 36.Kf3 Bd4 37.h4 Rf2 38.Ke4 Rh2 (38...Rb2 39.Rc1=) 39.h5 (39.Rb8 Ke7+=) 39...Rg2 40.Kf5 Rf2?? (better 40...Bb2=) 41.Rb7+- Be3?! (41...h6 42.Rf7 Ke8+-) 42.Rf7 Ke8 43.Rh7 Rf4 44.Ke6 Kd8 (44...Kf8 45.Rf7 Kg8 46.Rf6+-) 45.Rg7 (better 45.h6 Rg4 46.Rh8 (46.Kf6?! Rh4+/-) 46...Kc7 47.h7+-) 45...Bd4 (45...Rf1+-) 46.h6 f5 (46...Rf2 47.h7 Re2 48.Kd6 Be5 49.Kc5+-) 47.g5 (47.Rd7 Kc8 48.h7 Rf1 49.Ba6 Kb8 50.Rd4 Rh1 51.Rd8 Kc7+-) 47...Rh4 (47...Rf2 48.Kd6 Kc8+- (48...Bg7 49.hg7 Re2 50.g8Q Re8 51.Qd5 Re6 52.Qe6 f4 53.Qd7)) 48.h7 (48.Kd6 Kc8 49.Bd5 Kb8 50.Rb7 Kc8 51.Ra7 Be5 52.Ke5 Rb4 53.h7 Kb8 54.Ra8 Kc7 55.h8Q Re4 56.de4 fe4 57.Qd8) 48...Bg7-+ 49.Kf5 Rh7?? (better 49...Bb2 50.Kg6 Ke8-+) 50.Kg6= Rh4 51.Kg7 Ke7 52.g6 Rg4 53.Bf7 Rg3 54.Kh6?? (better 54.Bc4=) 54...Kf6-+ 55.Be8 (55.Kh5-+) 55…Rh3 0-1. dale70 (2070) - Snipy (2055), Rated Blitz game, lichess.org, 2015.

7.0-0 Bf3 8.Bf3 e5 9.d3 Ngf6 10.Nd2 (10.c4 dc4 11.dc4 e4=+) 10...Qc7 (10...Ba3!? 11.Nb3 Qb4=+) 11.c4= Bd6 12.h3 0-0 13.a4 Rfe8 Black plans e4 14.Qc2 Nc5 Black prepares e4 15.Rfc1 (better 15.d4!? ed4 16.Bd4+=) 15...e4=+ 16.Bf6 ed3 (16...Nd3 17.cd5 Nc1 18.Be4 Ne2 19.Kf1 cd5 20.Bh7 Kh8 21.Bg7 Kg7 22.Ke2=) 17.Qc3= gf6 18.Qf6 (18.cd5 cd5 19.Nb3 d2=) 18...Be5 (18...Re6!? 19.Qd4 dc4 20.Qc4 Qe7-/+) 19.Qg5=+ Kh8 (19...Kf8 20.cd5 Ba1 21.Ra1=+) 20.cd5= Ba1 21.Rc5 (better 21.Ra1 Qe7 22.Qe7 Re7 23.dc6 bc6 24.Bc6=) 21...Qd6 (better 21...Ra4!? 22.dc6 Be5=+) 22.dc6+= Bf6? (better 22...bc6 23.Nc4 Qe7+/-) 23.Qf5+- (23.Qf5 Ra4 24.cb7 Ra1 25.Nf1+-) 1-0. dale70 (2050) - Snipy (2075), Rated Blitz game, lichess.org, 2015.

7.0-0 Ngf6 8.d3 Qc7 9.h3 Bh5 10.Nbd2 e5 11.c4 Bg6 12.cd5 Nd5 13.Nh4 Ba3 14.Ng6 hg6 15.Qc1 Bd6 16.Nc4 Be7 17.Bf3 Bf6 18.d4 ed4 19.Bd4 Bd4 20.ed4 0-0 21.Re1 Rfe8 22.Qd2 N5b6 23.Nb6 Nb6 24.Re8 Re8 25.Re1 ½–½. Skerlik,Stanislav – Hess,Helmut, corr ICCF EU/M99, 2001.

7.0-0 Ngf6 8.d3 e6 9.Nbd2 Ba3 10.Nb3 (10.Ba3 Qa3 11.c4 Bf3 12.Nf3 dc4 13.dc4 Nc5+=) 10...Qb4 11.c3 Qa4 12.Qc2 Bb2 13.Qb2 Qa3 14.Qc2 0-0 15.Rfb1 Ra7 16.Ne1 (16.h3 Bf3 17.Bf3 h6+=) 16...Bf5 17.Nd4 Bg6 18.Qd2 (18.Ndf3 h6-/+) 18...Rfa8 (18...e5 19.Nb3-/+) 19.Rb3 (19.f4 Qe7-/+) 19...Qd6 (19...Qe7 20.Ndf3-/+) 20.Rb2 (20.f4 e5 21.fe5 Ne5-/+) 20...Nc5 (20...e5 21.Ndf3-/+) 21.f3 (21.f4!?+=) 21...e5-/+ 22.Nb3 Na4 23.Rc2 c5 24.Rcc1 (24.c4 d4-+) 24...Rd8 (24...b5 25.Nc2-+) 25.d4 (25.f4!?-/+) 25...ed4-+ 26.cd4 c4 27.Nc5 c3 (27...Nc5!? 28.dc5 Qe7 29.Nc2-+) 28.Rc3-/+ Nc3 29.Qc3 b6 (29...Rc8 30.Qb2-/+) 30.Nb3 (30.Ncd3 Rc7 31.Qb2 Bd3 32.Bd3 Rdc8-/+) 30...Rc7 (30...Re7 31.Qd2 Qe6 32.Kf2-+) 31.Qd2 Qa3 32.Bd3 Rdc8 33.Bg6 hg6 34.Rb1 (34.Qe2 Qe7-+) 34...Rc3 35.Rb2? (35.Rd1 g5-+) 35...Ne8 (35...Re3! 36.Qe3 Qb2 37.Qd2 Qd2 38.Nd2-+) 36.Qf2? (36.e4!? Nd6 37.ed5 Nf5-+) 36...Nd6 (better is 36...Re3! 37.Rd2 Qe7 38.Kf1-+) 37.Re2 Re8 38.g3 (38.g4 Qa8-+) 38...Qa6 39.Ng2 g5 40.h4 f6 (40...gh4 41.Nh4 Qd3 42.Ng2-+) 41.hg5 fg5 42.g4 (42.Rc2 Rc4-+) 42...Qd3 43.Rd2 (43.Nd2 Rc1 44.Ne1 Rd1-+) 43...Qb1 44.Kh2?? (44.Qf1 Qh7 45.Qe1-+) 44...Nc4 (better is 44...Re6-+) 45.Re2 Qh7 46.Kg1 Qd3 47.e4 (47.Qe1 Rc2 48.Rf2 Rf2 49.Qf2 Ne3 50.Ne3 Re3 51.Qd2 Rf3 52.Qd3 Rd3 53.Kg2-+) 47...de4 48.fe4 (48.Qf1 Ra8 49.f4 Rc2 50.Rc2 Qc2-+) 48...Rf8 49.Qe1 Qh3 50.d5 (50.Nd2 Qg4 51.Nf1-+) 50...Ne5 51.Nd4 Ng4 0–1. Mitrev,Emil (2155) – Vlashki,Nino (2250), Vidin BUL, 5th Balkan Amateur Open, 2014.

7.0-0 Ngf6 8.d4 e6 9.Nbd2 b5 10.h3 Bf3 11.Bf3 Nb6 12.Nb3 Qa4 13.Nd2 Qb4 14.Qc1 Na4 15.Nb3 Be7 16.c3 Qd6 17.Nd2 0-0 18.e4 Qf4 19.e5 Nd7 20.Nb1 Qh4 21.Bg4 c5 22.Nd2 Qh6 23.Nb1 b4 (23...Qg6 24.Be2 cd4 25.Bb5 Ne5 26.cd4 Nf3 27.Kh1 Nh4-+ (27...Nb2?! 28.gf3 Na4 29.Rg1-+)) 24.Qh6= gh6 25.cb4 Nb2 26.bc5 Ra4 (27.Rc1 Nd3-+) 0–1. Woschkat,Karl_Heinz – Buessing,Olaf, BFH021 BdF, 1998.

7.0-0 Ngf6 8.d4 e6 9.Nbd2 Bd6 10.c4 0-0 11.Qc2 Bf5 12.Bd3 Bd3 13.Qd3 Rfe8 14.Bc3 Qa6 15.Ne1 (15.Rfb1 Rec8=+) 15...h6 (15...c5 16.cd5 Nd5 17.dc5 Qd3 18.Nd3 Nc5 19.Nc5 Bc5 20.Ne4=+) 16.c5=+ Qd3 17.Nd3 Bc7 18.f4 (18.a4 Ne4 19.Ne4 de4=) 18...Ng4 19.Rfe1 f5 (19...Ra3 20.Nb1 Ra7 21.Bb4=+) 20.h3 Ngf6 21.Reb1 Ne4?? (better 21...Ra3 22.Rb3 Rea8=) 22.Ne4 fe4 23.Rb7 ed3 24.Rc7 Nf6 25.Rc6 Ne4 26.Bb4 d2 (better 26...Reb8!? 27.Rb6 Rb6 28.cb6 Rb8+-) 27.a3+- Reb8 28.Rd1 Rb4 29.ab4 Ra2 30.Re6 Rc2 31.Re4 de4?? (better 31...Rc1 32.Kf1 Rd1 33.Ke2 Rb1 34.Kd2 de4=) 32.b5 (better 32.Kf2 Rb2 33.f5+-) 32...Rc1=+ 33.Kf2 Rd1 34.Ke2 Rb1 35.Kd2 Rb5 36.Kc3 Kf7 37.Kc4 Rb1 (37...Rb2 38.Kd5 Rg2 39.Ke4 Rh2-/+) 38.d5 (better 38.Kd5=) 38...Rd1-+ 39.g4 Ke7 40.h4 White prepares g5 40...g6 41.g5 (41.h5 gh5 42.gh5 Rd3 43.d6 Kd7-+) 41...hg5 42.hg5 Kd7 43.d6 Kc6 44.Kb4 Rd5 45.Kc4 Rc5 46.Kd4 Kd6 47.Ke4 Rc4 48.Kf3 Kd5 49.f5 gf5 50.g6 Rg4 51.Kf2 (51.e4 Re4 52.Kf2 Rg4-+) 51...Rg6 52.Kf3 Ke5 53.Kf2 Ke4 (53...Ke4 54.Ke2 Rg2 55.Ke1 Ke3 56.Kd1 Rd2 57.Ke1 Rd4 58.Kf1 Kf3 59.Kg1 Rh4 60.Kf1 Rh1) 0-1. dale70 (2025) - Snipy (2135), Rated Blitz game, lichess.org, 2015.

8.c4 e6 9.Nd4 Qb4 10.Bc3 Be2 11.Qe2 Qc4 12.d3 -/+.

8.c4 e6 9.Nd4 Be2 10.Qe2=+ Be7 11.cd5= Qd5 12.Nc3 Qa5 13.Nb3 Qb6 14.d4 0-0 15.Qc2 Rfc8 16.Rfd1 Ra6 17.e4 Rca8 18.d5 ed5 19.ed5 cd5 20.Nd5 Nd5 21.Rd5 Qe6 22.Qd2 Nf6 23.Bf6 Qf6 24.h3 ½–½. Kallab – Grund,Karl, corr SOK–88–24, 1988.

8.c4 e6 9.cd5 ed5 10.Nd4 Be2 11.Qe2 Bc5 =.

8.c4 e6 9.cd5 Nd5 10.Nc3 Bf3 11.Bf3 Ba3 =.

8.c4 Bf3 9.Bf3 dc4 10.Qc1 =+.

8.Ne5 Be2 9.Qe2 Qb4 =.

8.Ne5 Be2 9.Qe2 Qc7 10.Nd7 Nd7 =.

5.Nc3 Bg4 6.e4 (6.e3 Nf6=) 6...Nd7= 7.h3 Bh5 8.g4 (8.Bd3 e6=) 8...Bg6=+ 9.Nh4 (9.Bg2 Ngf6=+) 9...Ngf6 (9...e6 10.Ng6 hg6 11.Bg2=+) 10.Qe2 (10.Bg2 Nc5 11.Qe2 e5=+) 10...e5 11.Rb1 (11.Bg2 Be7=+) 11...Be7 12.Rg1 (12.Bg2 Nc5=+) 12...Nc5 (12...d5 13.Ng6 hg6 14.ed5 Nd5 15.Nd5 Qd5 16.Bc3-/+) 13.Ng6 (13.Nf5!? Bf5 14.gf5=+) 13...hg6 14.g5 (14.Qe3 0-0-/+) 14...Nfd7 (14...Nh5 15.Qe3-+) 15.Qe3 Ne6 16.Rg4 b5 (16...Ndc5 17.a3-+) 17.a3-/+ Ndc5 18.Kd1 (18.Na2 Qd8 19.Nb4 Rc8-/+) 18...Bd8 19.Qg3 (19.Na2 Na4 20.Ba1 Bb6-+) 19...Qa7 20.Bg2 Qe7 (20...Bb6 21.Ke1-+) 21.h4 (21.Ne2 Ng5 22.h4 Nh7-+) 21...Na4 (21...0-0 22.Ne2-+) 22.Na4 Ra4 (22...ba4?! 23.Qc3 Qd7 24.Qc4-/+) 23.Qc3 (23.Bf1 0-0-+) 23...Qd7 24.Qe3 Qb7 25.Qd3 (25.Ke2 Bb6 26.Qh3 Qa6-+) 25...Ke7 26.Qf3 (26.f3 Bb6-+) 26...Bb6 27.Ke1 (27.Bf1 Qa7 28.Ke1 Bc5-+) 27...Qa7 28.Bc1 (28.Bf1 Bc5-+) 28...Bc5 29.d3 (29.c3 Ba3 30.Ba3 Ra3-+) 29...Ba3 30.Bd2 (30.Be3 Bc5 31.c4 Be3 32.fe3 bc4 33.dc4 Rc4-+) 30...Bc5 31.Rc1 (31.Be3 Nd4 32.Bd4 Bd4-+ (32...ed4?! 33.e5 d5 34.Rf4-+)) 31...Ra1 32.Bh3 Qa3 (32...b4 33.Rg2 Rc1 34.Bc1-+) 33.Qd1 Ra8 34.Rg3 (34.Kf1 Nd4 35.Rg1 Nc2-+) 34...Nd4 35.c3 (35.Kf1 Rc1 36.Bc1 Qc3-+) 35...Rc1 (35...Nb3 36.Ra1 Qa1 37.d4 ed4 38.Qa1 Ra1 39.Ke2-+) 36.Qc1 Qc1 (36...Nb3 37.Qa3 Ra3 38.Kd1 Bf2 39.Rg2 Ra1 40.Ke2 Nd2 41.Kf2-+) 37.Bc1 Ne6 (better 37...Nb3!? 38.Be3 Be3 39.Re3 Ra1 40.Ke2-+) 38.Be6 Ke6 39.Be3 Ra1 40.Kd2 Ra2 (40...Be3 41.fe3 Rh1 42.Rg4-+) 41.Kc1 (41.Kd1 Be3 42.fe3 Ra1 43.Kd2 Rh1-+) 41...Be3 42.fe3 Rh2 43.Rg4 c5 44.d4 (44.Kd1 Ra2-+) 44...Kd7 45.d5 (45.dc5 dc5 46.Kd1 b4 47.cb4 cb4-+) 45…Kc7 0–1. b4_player (2175) – Raspoutine (2300), GameColony.com, 2003.

5.e3 Nd7 6.Be2 Ngf6 7.0-0 g6 8.d4 Bg7 9.a4 0-0 10.h3 (10.Bc3 Qf5=) 10...Re8 11.Nbd2 Qc7 12.c4 e5 13.c5 e4 14.cd6 Qd6 15.Nc4 Qc7 16.Nfd2 b6 17.Qc2 Bb7 (17...Ba6 18.Rfd1=) 18.Rfb1 c5 19.dc5 Nc5 Attacking the isolated pawn on a4 (19...bc5 20.a5+=) 20.Bd4 (20.Nb6 Qb6 21.Bd4 Qe6 22.Qc5 Bd5+/-) 20...Ncd7 21.Qb2 (worse 21.Bb6 Nb6 22.Rb6 Nd5=+) 21...Ba6 22.Bf1 (worse 22.Bb6 Nb6 23.Qb6 Qb6 24.Nb6 Be2 25.Na8 Ra8=+; 22.Nb6?! Be2 23.Na8 Ra8 24.Ne4 Ne4 25.Bg7 Rb8+/-) 22...Nh5 (22...Reb8!?+=) 23.Bg7 Ng7 24.Nb6 Nb6 25.Qb6 Qb6 (25...Qc8 26.Rc1 Qd7 27.Ba6 Qd2 28.a5+-) 26.Rb6 Bf1 27.Kf1 (27.Rf1?! Ra4 28.Rfb1 Ne6=; 27.Nf1?! f5+-) 27...f5 28.a5 Ne6 29.a6 Nc5 (29...Ra7 30.Nb3+-) 30.a7 Kf7 31.Nc4 Re7 32.Nd6 Kg7 33.Nb5 Nb7 34.Rc6 Nd8 35.Rc7 (35.Rc7 Kf8 36.Re7 Ke7 37.Nc7 Ra7 38.Ra7+-) 1-0. marekt – SaanichSquasher, ChessWorld.net, 2022.

5.e3 Nf6 6.Nc3 Nbd7=+.

5.e3 Nf6 6.Be2 Nbd7 7.0-0 (7.a4 g6=) 7...g6=+ 8.c4 Bg7 9.Qc2 (9.d4 0-0=+) 9...0-0 (9...Nc5 10.Nc3=+) 10.d4 e5 (10...Nb6 11.Nc3=+) 11.Nbd2= ed4 12.Nd4 (12.ed4 Qc7=) 12...Re8=+ 13.N2f3 (13.Bc3 Qa3=+) 13...Nc5 14.Nb3 Qa4 15.Nfd4 Ng4 (15...b6 16.Rfe1=+) 16.Qc1 (16.Rfd1 b6=+) 16...Ne5 (16...b6 17.Qd1 f5 18.h3-/+) 17.Qc2 (17.Rd1 b6 18.Nc5 dc5=+) 17...b6 18.Rfc1 Qa7 (18...Bg4 19.f3 Bc8 20.Rab1=+) 19.Nc5 (19.f4!? Ng4 20.Bg4 Bg4 21.Nc6=) 19...bc5-/+ 20.Nf3 Bf5 21.Qd2 Reb8 (21...Rab8 22.Bc3-/+) 22.Bc3=+ Qe7 (22...Qc7 23.Ne5 Be5 24.f4 Bc3 25.Rc3=+) 23.h3 (23.a4 Ra7=) 23...Ra4 (23...Rd8 24.a4=+) 24.Qd1 (24.Rd1 Rd8 25.Ne5 Be5=+) 24...Rba8 (24...Ra3 25.Qd2-/+) 25.Qb3 Qa7 (25...Be4 26.Ne5 Be5 27.f3-/+) 26.Ne5=+ Be5 27.Be5 de5 28.Bf3 Ra2 (28...Ra3 29.Qb2 e4 30.Bg4 Bg4 31.hg4=+) 29.Ra2=+ Qa2 30.Qa2 Ra2 31.Bc6 Rc2 (31...Bd3 32.g4=) 32.Rc2= Bc2 33.Bd5 Kf8 34.f3 f6 (34...f5 35.f4 e4 36.Kf2=) 35.h4 h6 36.Kf2 Ke7 37.g3 g5 38.hg5 fg5 39.e4 (39.g4 Kd6=) 39...h5=+ 40.f4 gf4 ½–½. Nemeth,Laszlo – Dudas,Peter (2165), Cseppko op–A, 2002.

5.e3 Nf6 6.Be2 e5 7.0-0 Qb6 (7...Be7 8.a4=+) 8.Bc1 (8.Qc1 Be7=) 8...e4 9.Nd4 d5 10.Nc3 (10.c4 Bc5 11.Nc3 Bd4=) 10...Qc7 11.h3 (11.d3 Nbd7=) 11...b5=+ 12.d3 (12.Bb2 Bd6=+) 12...b4 13.Nb1 Qe5 (13...ed3 14.cd3 Be7 15.Bb2=+) 14.de4 de4 (14...Bd6 15.f4 Qe4 16.Rf3=+) 15.Nd2= Bd6 16.f4 ef3 17.N2f3 Qe7 18.Bc4 0-0 19.Qd3 c5 20.Ng5 h6 (20...g6 21.Ndf3 Ba6 22.Ba6 Ra6 23.Bb2=) 21.Rf6= hg5 22.Rh6 Bh2 23.Kf1 (worse 23.Kh2 Qe5 (23...gh6?? 24.Qg6 Kh8 25.Qh6 Kg8 26.Bb2 Qe5 27.Kg1+-) 24.Kg1 gh6 25.Qg6 Qg7 26.Qg7 Kg7-+) 23...gh6 24.Qg6 Kh8 25.Qh6 Kg8 26.Qg6 Kh8 27.Qh6 Kg8 28.Qg6 Kh8 29.Qh6 ½–½. Janek – esson, internet free game, 2017.

5.e3 Bg4 6.Be2 Nd7 7.0-0 Ngf6 8.Nc3 g6 (8...e5 9.h3 Bf5 10.Nh4=) 9.h3 Bf3 10.Bf3 (worse 10.gf3 Bg7-/+) 10...Ne5 11.Ne4 Bg7 12.Be5 Qe5 13.d4 Qa5 14.Nf6 Bf6 15.c4 Rb8 (15...0-0 16.Rb1 Ra7 17.Qe2=) 16.Qb3 c5 17.Rab1 The backward pawn on b7 becomes a target (17.Rfd1 0-0+=) 17...cd4= 18.ed4 Bd4 19.Qb5 (19.Rfd1!? Qa7 20.Qb5 Kf8 21.Rd2=) 19...Qb5-/+ 20.cb5 (20.Rb5 b6-/+) 20...0-0 (20...Kd7 21.Rbd1 Bg7 22.Rc1-/+) 21.a4 e6 22.Rfd1 Bc5 23.a5 d5 24.Rdc1 (24.a6 Rfc8=+) 24...Rfc8 25.Be2 Ba3 (25...Kf8!?-/+) 26.Rc8=+ Rc8 27.a6 ba6 28.ba6 Bd6 29.Bb5 Kg7 30.Kf1 Ra8 31.Ke2 Kf6 32.Ra1 Bc5 33.Bc6 (33.Rc1 Bd4=+) 33...Ra7 34.Bb7 Ke7 35.Rc1 Bd6 36.Rc8 h5 37.Kd3 e5 (37...Kd7 38.g3=+) 38.f3 (38.Ra8 Ra8 39.Ba8 Bc5 40.Bd5 Bf2=) 38...f5 39.Rg8 Kf6 40.Ra8 Ra8 41.Ba8 Ke6?? (41...d4=) 42.Bc6 (better 42.a7 e4 43.fe4 fe4 44.Ke2+-) 42...Bc5-/+ 43.Be8 e4 44.fe4 fe4 (44...de4?! 45.Kc4 Ba7 46.Bg6=) 45.Ke2 Kf5 46.g4 hg4 47.hg4 Kg4 48.Bg6 ½-½. kaalmakreel (2120) - TheShrink (2145), ChessWorld.net, 2017.

5.e3 Bg4 6.Be2 Bf3 7.Bf3 Nh6 8.0-0 e5 9.d4 Nd7 10.Nc3 (10.c4!?+=) 10...d5= 11.e4 Bb4 (11...Ba3!? 12.Ba3 Qc3+=) 12.Qd3+= 0-0 (12...de4!? 13.Ne4 f5=) 13.ed5+/– c5 (13...ed4 14.Qd4 Nf5 15.Qf4 Bc3 16.Bc3 Qc3 17.Qf5+/–) 14.dc5 Nc5 15.Qe3 Rad8? (15...Nd7 16.Ne4+/–) 16.Ne4 (better is 16.a3 Bc3 17.Bc3+- (17.Qc3?! Qc3 18.Bc3 e4+/–)) 16...Kh8?? (better is 16...Nf5!? 17.Qg5 Ne4 18.Qf5 Nd2 19.Qe5 Nf3 20.gf3 f6 21.Qe6 Kh8+/–) 17.Nc5 (better is 17.a3!? Nf5 18.Qg5 Nd4 19.ab4 Qb4 20.Bd4 Qd4 21.Nc5 Qc5 22.Qe5 Qc2+-) 17...Qc5 18.Qe5 f6 19.Qe2 Nf5 20.Rfd1 Rfe8 21.Qd3 Nd6 22.a3 Ba5 23.Rac1 Bb6 24.Bd4 Qa5 25.Bb6 Qb6 26.c4 Qc5 27.Qb3 h6 28.Qb4 b6 29.h3 Ra8 30.Rd3 Qb4? (30...Rac8+-) 31.ab4 Ra4 32.c5 bc5 33.bc5 Nc4 (33...Rc8 34.Rdd1 (34.cd6?! Rc1 35.Kh2 Rc8+/–) 34...Nb5 35.d6+-) 34.d6 Ne5 35.Rdc3 (35.Rdd1 Nf3 36.gf3 Rf8+-) 35...Rc8 (35...Rd4 36.Bb7 Rb8 37.Rb1+-) 36.c6 (better is 36.Bb7 Rf8+-) 36...Ra6 (36...Rd4 37.Be4! Re4+-) 37.d7 (37.d7 Rf8 38.Rd1+-) 1–0. retiponziani – 488, ChessWorld.net, 2012.

5.e4 Nd7 6.Bc4 Ngf6 7.Nc3 Qb4 8.Bb3 Nc5 9.d3 Nb3 10.ab3 Rb8 11.0-0 e5 12.Ra4 Qb6 13.h3 Be7 14.d4 Qc7 15.de5 de5 16.Qe2 0-0 17.Nd1 Bd6 18.Ne3 b5 19.Raa1 Ne4 20.Ng4 Bg4 21.hg4 Nc5 22.Nd2 Ne6 23.Ne4 Nf4 24.Qf3 Be7 25.Qe3 c5 26.g3 Ng6 27.Nc3 Qc6 28.Rfd1 Rfd8 29.Rd8 Rd8 30.Ne4 c4 31.Ra7 Bf8 32.bc4 bc4 33.Bc3 f6 34.Kh2 Ne7 35.Qc5 0–1. craig4000 – whitecat25, ChessWorld.net, 2014.

5.e4 Nf6 6.e5 Ng4 7.ed6 Qb6 8.Bd4 c5 9.Bc3 ed6 10.Bc4 Nd7 11.Qe2 Nge5 (11...Be7 12.0-0 Nge5 13.Ne5 Ne5 14.Bb5 Kf8 15.a4+/–) 12.Be5 de5 13.Ne5 Be7 14.Bf7 Kf8 15.Nc3 Ne5 16.Qe5 Kf7 17.Qe7! Ke7 Decoy to e7 18.Nd5 Theme: Double Attack 18...Kd8 19.Nb6 Re8 20.Kd1 Ra6 21.Nc8 Kc8 22.Re1 Rae6 23.Re3 Re3 24.fe3 Kc7 25.Ke2 Ra8 26.a4 b5 (26...Kd6 27.d4+-) 27.a5 b4 28.a6 Ra7 (28...c4+-) 29.Kd3 Kd6 (29...Kc6 30.Kc4+-) 30.Kc4 Kc6 31.d4 cd4 32.ed4 Kb6 (32...h5 33.Kb4 h4 34.c4+-) 33.Kb4 g5 34.c4 h5 35.d5 g4 (35...Kc7 36.c5 Ra8 37.Ka5+-) 36.c5 Kc7 37.Kb5 White prepares c6 37...h4 (37...Ra8 38.Rf1 Rb8 39.Ka5+-) 38.d6 Kc8 (38...Kd7+-) 39.Rf1 g3 40.c6 h3 (40...Rd7 41.Rf8 Rd8 42.a7 Rf8 43.a8Q) 1–0. Klaus Behrmann – coolerdude, ChessWorld.net, 2004.

6.c4 g6 7.Bc3 Qc7 8.d4 e4 (8...Bg7 9.de5 de5 10.Nbd2=) 9.Nfd2 (9.d5 f6 10.Ng5 Bf5+/-) 9...d5= 10.Qb3 Be6 (10...Nf6 11.Be2=) 11.a4 (11.Ne4 b5 12.cd5 Bd5=) 11...Ne7 (11...Nf6 12.a5=) 12.c5 (12.Ne4!? de4 13.d5 cd5 14.Bh8 dc4 15.Qc2+/-) 12...Bg7 13.Na3 0-0 14.Nc2 Nd7 15.Be2 f5 (15...Nc5 16.dc5 d4 17.Bc4 dc3 18.Ne4=) 16.g3 (16.0-0 Bf7 17.Qb4 f4+=) 16...g5 Black prepares the advance f4 17.h4 f4 (17...g4 18.a5=) 18.hg5 (18.Ne4 fg3 19.Ng3 g4+/-) 18...fe3 (better 18...fg3!? 19.Ne4 gf2 20.Kd2 Bf7 21.Nf2 Nc5 22.dc5 d4=) 19.Ne3+/- Nf5 20.Ne4 (better 20.Nf5 Bf5 21.Bb2+/-) 20...Ne3?? (20...Nd4 21.Qb4 de4 (worse 21...Ne2 22.Ke2 Bc3 23.Nc3+=) 22.Bd4 Bd4 23.Qd4 Qa5 24.Kf1 Nc5+/-) 21.fe3+- Bf5 22.Nd6 b5 23.ab5?? (better 23.a5 Bg6 24.e4+-) 23...Ra1 24.Ba1 Nc5 25.dc5?? (better 25.b6 Qd6 26.dc5 Qc5 27.Bg7 Kg7 28.0-0+/-) 25...Ba1?? (better 25...Qa5 26.Kd1 Qa1 27.Kd2 Qh1 28.bc6 Be6-+) 26.b6 (26.0-0 Bg6 27.bc6 Bf6 28.Rf6 Bf7+-) 26...Qg7 27.Nf5 (better 27.b7 Qc3 28.Qc3 Bc3 29.Kd1 Be4 30.Ne4 de4+-) 27...Bc3 (27...Rf5 28.Kd1 Rf8+-) 28.Kd1 Rf5 29.b7 (29.Bd3 Qe5+-) 29...Be5 30.b8Q Bb8 31.Qb8 Rf8 32.Qb1 d4 (32...Rf7+-) 33.Bc4 Kh8 34.Bd3 (34.Bd3 Qf7 35.ed4+-) 1-0. zembelek (2065) - Shouldbeworking (2030), Rated Blitz game, lichess.org, 2014.

6.Be2 e4 7.Nd4 Qg5 8.Kf1 d5=+ 9.h4 Qe7 10.c4 (10.h5 Nf6=+) 10...Nf6 11.cd5 Nd5 12.Nc3 (12.d3 c5 13.de4 Ne3 (worse 13...cd4 14.ed5 de3 15.Qc1+/-; worse 13...Qe4 14.Nb5 Na6 15.Nd2+=) 14.fe3 cd4=) 12...Nf6 (12...Nc3 13.dc3 c5 14.Nb3=+) 13.d3 ed3 14.Qd3 Na6 15.Qc2 Qc5 16.a3 Be7 17.Nb3 Qb6 18.Na4 Qc7 19.Bd4 Be6 20.Nb6 Rd8 21.Nc4 Rd5 22.Bb6 Qb8 23.Nd4 Nc5 24.Rb1 0-0 25.Bf3 Ncd7 (25...Rd7 26.Bc5 Bc5 27.Nc6 Bc4 28.Qc4+=) 26.Ne6 (26.Ne6 fe6 27.Bd5 ed5 28.Nd2=) 1-0. PEREIRA – Shivoy, internet, 2022.

6.Be2 Nf6 A) 7.c4 A1) 7...Be7 8.0-0 (8.Bc3 Qc7 9.0-0 0-0 10.d4 Nbd7 11.Qc2 b6 12.Nbd2 Re8 13.Rfd1= –0.09; 8.Qb3 e4 9.Nd4 Qg5 10.g3 Nbd7 11.f4 Qa5 12.Nc3 Nc5 13.Qc2=+ –0.41; 8.Qc2 Bg4 9.Nc3 Nbd7 10.0-0 d5 11.cd5 cd5 12.d4 e4 13.Ne5=+ –0.28) 8...0-0 9.Nc3 Bg4 10.d4 e4 11.Nd2 Be2 12.Qe2 d5 13.c5= –0.09; A2) 7...Qb6 8.Qc2 (8.Bc3 Be7 9.0-0 0-0 10.d4 e4 11.Nfd2 Re8 12.Qc2 Bf5 13.Rd1= –0.09; 8.Qb3 Qb3 9.ab3 Ra1 10.Ba1 Na6 11.d4 e4 12.Nfd2 Bf5 13.d5= –0.09; 8.Qc1 Be7 9.0-0 Na6 10.d4 e4 11.Nfd2 Bf5 12.Nc3 0-0 13.f3= –0.03) 8...Na6 9.0-0 Be7 10.Nc3 0-0 11.d4 Qa5 12.Rfd1 Re8 13.de5= 0.13; A3) 7...Nbd7 8.Qc2 (8.Bc3 Qc7 9.d4 Be7 10.Nbd2 e4 11.Ng5 d5 12.c5 Nb8 13.h4=+ –0.41; 8.Nc3 Be7 9.0-0 0-0 10.d4 Re8 11.Rb1 b6 12.d5 Bb7 13.e4= –0.03; 8.0-0 Be7 9.Nc3 0-0 10.d4 e4 11.Nd2 Qf5 12.Qb3 d5 13.c5= 0.00) 8...Nc5 9.0-0 e4 10.Nd4 Be7 11.Nb3 Qa7 12.Nc5 Qc5 13.Bf6= 0.19; A4) 7...e4 8.Nd4 (8.Bc3 Qf5 9.Nd4 Qg6 10.Rg1 Be7 11.d3 0-0 12.Qc2 c5 13.Nb5=+ –0.50) 8...Qg5 9.g3 Be7 10.d3 0-0 11.Nc3 ed3 12.Bd3 Na6 13.h4=+ –0.34; B) 7.Bc3 B1) 7...Qd5 8.d3 (8.Bb4 Na6 9.Nc3 Qe6 10.Ba5 d5 11.Rb1 Bd6 12.Ng5 Qf5 13.h4-/+ –0.97; 8.a4 Be7 9.d3 b6 10.e4 Qe6 11.Nbd2 0-0 12.0-0 Re8 13.d4= 0.00; 8.a3 Be7 9.d3 b5 10.e4 Qe6 11.Nbd2 0-0 12.d4 ed4 13.Nd4=+ –0.41) 8...b5 9.e4 Qe6 10.0-0 Qe7 11.Nbd2 Be6 12.a3 Nbd7 13.d4= 0.13; B2) 7...Qc7 8.Bb2 (8.0-0 b5 9.d4 e4 10.Nfd2 d5 11.h3 Bd6 12.Nb3 0-0 13.Qd2-/+ –0.78; 8.a3 b5 9.Bb2 e4 10.Nd4 d5 11.Nc3 Bd6 12.f4 ef3 13.Nf3=+ –0.66; 8.Ng5 d5 9.0-0 Bd6 10.f4 ef4 11.Bf6 gf6 12.Nf3 fe3 13.de3-/+ –0.91) 8...Be7 9.0-0 0-0 10.c4 b6 11.Nc3 Bf5 12.d3 Na6 13.Re1= –0.22; B3) 7...Qa7 8.a4 (8.0-0 b5 9.Bb2 Bf5 10.c4 bc4 11.Bc4 Nbd7 12.d4 e4 13.Nh4= –0.22; 8.Ng5 Be7 9.0-0 0-0 10.Bb2 Qb6 11.Qc1 h6 12.Nf3 Be6 13.c4=+ –0.41; 8.d3 Be7 9.a4 0-0 10.0-0 Na6 11.a5 Be6 12.e4 b5 13.Nbd2= 0.00) 8...Be7 9.a5 0-0 10.0-0 Na6 11.Bb2 b5 12.Re1 Qb7 13.d3= 0.00; B4) 7...Qa4 8.d3 (8.0-0 Be7 9.Bb2 b5 10.Nc3 Qa5 11.a3 0-0 12.e4 Bg4 13.d4=+ –0.41; 8.Bb2 Bf5 9.d3 Be7 10.Nc3 Qb4 11.Rb1 Ra2 12.Qc1 Nd5 13.Kd2-+ –1.56; 8.d4 e4 9.Nfd2 b5 10.Bb2 Be6 11.0-0 Be7 12.a3 d5 13.Nc3= –0.25) 8...Be7 9.0-0 0-0 10.Bd2 b5 11.c4 Qd1 12.Rd1 Be6 13.cb5= –0.25; C) 7.a4 C1) 7...b6 8.Na3 Qd5 9.c4 Qc5 10.d4 Qa5 11.Nd2 ed4 12.Bd4 Ne4 13.Bb6+= 0.31; C2) 7...Be6 8.Ng5 (8.Bc3 Qc7 9.0-0 Be7 10.Ng5 Bd5 11.a5 h6 12.Nf3 0-0 13.d3= –0.22; 8.0-0 Be7 9.Bc3 Qc7 10.d4 Nbd7 11.Nbd2 0-0 12.de5 de5 13.Nc4=+ –0.44; 8.Nc3 Be7 9.0-0 0-0 10.Ng5 Bd7 11.Rb1 b6 12.e4 d5 13.d4=+ –0.37) 8...Bd5 9.0-0 h6 10.Nf3 Nbd7 11.d3 Be7 12.c4 Bf3 13.Bf3= –0.06; C3) 7...Be7 8.0-0 (8.Na3 e4 9.Nc4 Qc7 10.Ng1 d5 11.Be5 Qd8 12.Nb2 0-0 13.Rb1-/+ –1.00; 8.Bc3 Qc7 9.0-0 0-0 10.Re1 b6 11.d3 Be6 12.Ng5 Bd7 13.Bb2=+ –0.62; 8.c4 e4 9.Bc3 Qf5 10.Nd4 Qg6 11.Rg1 0-0 12.a5 Na6 13.d3=+ –0.56) 8...0-0 9.Na3 Qc7 10.Nc4 b6 11.Qb1 Nbd7 12.d3 Ba6 13.Ncd2=+ –0.47; C4) 7...Qc7 8.Nc3 (8.0-0 Be7 9.Nc3 0-0 10.Rb1 d5 11.d3 b6 12.Re1 Bd6 13.h3-/+ –0.81) 8...Be7 9.Rb1 Nbd7 10.e4 Nc5 11.d4 Nce4 12.Ne4 Ne4 13.0-0=+ –0.69; D) 7.0-0 D1) 7...Nbd7 8.a4 (8.Bc3 Qd5 9.Bb4 c5 10.c4 Qe6 11.Bc3 e4 12.Ng5 Qf5 13.Nh3= 0.00; 8.Nc3 d5 9.a4 Be7 10.h3 0-0 11.Re1 Re8 12.Ba3 Ba3 13.Ra3-/+ –0.94; 8.c4 Be7 9.Nc3 0-0 10.d4 e4 11.Nd2 Qf5 12.Qc2 d5 13.c5= –0.03) 8...b6 9.c4 e4 10.Nd4 Ne5 11.Bc3 Qa7 12.a5 ba5 13.Ra5= 0.25; D2) 7...Be7 8.Bc3 Qa4 9.Bb2 Bf5 10.d3 0-0 11.Nc3 Qb4 12.Rb1 b5 13.e4= 0.00; D3) 7...b6 8.c4 (8.d3 Be7 9.Bc3 Qa4 10.Bd2 0-0 11.Nc3 Qa3 12.Rb1 Nbd7 13.e4=+ –0.44; 8.Bc3 Qa4 9.Bb2 Be7 10.c4 Qd1 11.Rd1 Bg4 12.d3 Nbd7 13.Nbd2= –0.19; 8.Re1 Be7 9.c4 0-0 10.d3 Be6 11.Bc3 Qa4 12.Qa4 Ra4 13.Ng5= –0.22) 8...Be7 9.Nc3 Bf5 10.Nh4 Be6 11.Qc2 0-0 12.Nf5 Re8 13.d4= –0.12; D4) 7...Qb4 8.Bc3 (8.Qc1 Be7 9.c4 0-0 10.Ba3 Qa5 11.c5 Rd8 12.d4 e4 13.Nfd2=+ –0.37; 8.Bc1 e4 9.Nd4 d5 10.Nc3 Bd6 11.a4 Be5 12.Ba3 Qb6 13.h3= –0.25) 8...Qa4 9.d3 b5 10.Bd2 Be7 11.Nc3 Qa3 12.Nb1 Qa7 13.c4= –0.22.

6.Be2 Bg4 A) 7.Bc3 A1) 7...Qd5 8.d3 (8.Bb4 Na6 9.Nc3 Qe6 10.Rb1 b5 11.Ba5 d5 12.d4 Bf3 13.Bf3=+ –0.41; 8.a4 Nf6 9.h3 Be6 10.d3 Be7 11.e4 Qc5 12.a5 Qa7 13.0-0= 0.09; 8.0-0 Be7 9.d3 f5 10.h3 Bh5 11.Bd2 Nf6 12.c4 Qg8 13.Nc3= –0.06) 8...Nf6 9.e4 Qe6 10.Ng5 Be2 11.Ne6 Bd1 12.Nc7 Ke7 13.Na8+= 0.53; A2) 7...Qa4 8.Bb2 (8.0-0 Nf6 9.Bb2 Be7 10.Nc3 Qa5 11.Ng5 Be2 12.Qe2 0-0 13.Qd3=+ –0.34; 8.h3 Bf5 9.d3 Nf6 10.Bd2 Be7 11.Nc3 Qa3 12.e4 Be6 13.Ng5= –0.09; 8.d3 b5 9.Bd2 Nf6 10.0-0 Be7 11.a3 0-0 12.Nc3 Qa7 13.a4= –0.22) 8...Bf5 9.d3 Nf6 10.0-0 Be7 11.Nc3 Qa5 12.e4 Bg4 13.Nd2= –0.06; A3) 7...Qd8 8.d3 (8.a4 Nf6 9.0-0 Be7 10.h3 Bf5 11.d3 0-0 12.a5 b6 13.Qd2= –0.22; 8.0-0 b5 9.e4 Nf6 10.Bb2 Be7 11.Ng5 Be2 12.Qe2 0-0 13.Nf3=+ –0.31; 8.h3 Be6 9.a4 Nf6 10.0-0 b6 11.d4 e4 12.Nfd2 Be7 13.Nb3=+ –0.34) 8...Nf6 9.0-0 Be7 10.Ng5 Be2 11.Qe2 Nd5 12.Nf3 0-0 13.Bb2= 0.00; A4) 7...Qc7 8.0-0 (8.a4 Nf6 9.0-0 Be7 10.h3 Be6 11.Ng5 Bd5 12.d3 h6 13.Nf3=+ –0.34; 8.h3 Bd7 9.a4 Nf6 10.0-0 Be7 11.d3 b6 12.Qd2 Nd5 13.Bb2=+ –0.31; 8.d3 b5 9.e4 Nf6 10.Ng5 Be2 11.Qe2 Be7 12.0-0 0-0 13.Nf3=+ –0.37) 8...b5 9.e4 Nf6 10.Ng5 Be2 11.Qe2 Ra4 12.d3 b4 13.Bb2= –0.09; B) 7.Nc3 B1) 7...Be7 8.h3 (8.0-0 Nf6 9.Ng5 Be2 10.Qe2 0-0 11.Qd3 d5 12.Qf5 Re8 13.f4=+ –0.31; 8.e4 Nf6 9.0-0 b5 10.a3 0-0 11.d4 Nbd7 12.Rb1 Rfc8 13.h3=+ –0.37; 8.a4 Nf6 9.0-0 0-0 10.Rb1 Nbd7 11.Ba3 Qc7 12.d4 Rfe8 13.Re1=+ –0.47) 8...Be6 9.0-0 b5 10.a3 f5 11.d4 e4 12.Nd2 Nf6 13.d5= –0.06; B2) 7...b5 8.h3 (8.a4 b4 9.Nb1 Na6 10.0-0 Nf6 11.Ng5 Be2 12.Qe2 Be7 13.f4= –0.12; 8.0-0 Nf6 9.h3 Be6 10.Ng5 Be7 11.Ne6 fe6 12.Bh5 g6 13.Bg4= –0.09; 8.a3 Nf6 9.h3 Bf3 10.Bf3 d5 11.a4 b4 12.Ne2 e4 13.Bg4=+ –0.31) 8...Bf5 9.e4 Bd7 10.a3 Nf6 11.0-0 Be7 12.d4 ed4 13.Qd4= 0.03; B3) 7...b6 8.0-0 (8.h3 Bf3 9.Bf3 d5 10.a4 Nd7 11.Nb5 Rc8 12.Nc3 Ngf6 13.Be2=+ –0.41; 8.e4 Nf6 9.0-0 Be7 10.Ne1 Be6 11.f4 0-0 12.f5 Qc5 13.Kh1=+ –0.37; 8.a3 Nf6 9.0-0 Be7 10.e4 0-0 11.h3 Be6 12.d4 Nbd7 13.Qd2=+ –0.28) 8...Nf6 9.e4 Be7 10.a3 0-0 11.h3 Be6 12.d4 Nbd7 13.Qd2=+ –0.28; B4) 7...Nf6 8.a3 (8.h3 Bf3 9.Bf3 d5 10.a3 Bd6 11.0-0 0-0 12.Be2 b5 13.a4=+ –0.59; 8.Ng5 Be2 9.Qe2 b5 10.a4 b4 11.Nd1 Be7 12.f4 e4 13.d3=+ –0.44; 8.0-0 Nbd7 9.Re1 d5 10.h3 Bf5 11.a3 Bd6 12.d3 0-0 13.Qd2=+ –0.66) 8...Be7 9.0-0 0-0 10.e4 Nbd7 11.h3 Bf3 12.Bf3 b5 13.d4=+ –0.28; C) 7.0-0 C1) 7...Nd7 8.h3 (8.Bc3 Qa4 9.d3 Ngf6 10.Bb2 Qb5 11.Bc3 Be7 12.a4 Qb6 13.a5= –0.09; 8.Nc3 Ngf6 9.Re1 d5 10.h3 Bf5 11.d3 Bb4 12.Qd2 0-0 13.a3=+ –0.47; 8.c4 Ngf6 9.h3 Bh5 10.Nc3 e4 11.Ne1 Be2 12.Ne2 Qa4 13.Qb1= –0.25) 8...Bf3 9.Bf3 d5 10.d4 Qb6 11.Qc1 e4 12.Be2 Ngf6 13.c4= 0.09; C2) 7...b5 8.h3 (8.d3 Nf6 9.Nbd2 Qb4 10.Rb1 Qa4 11.a3 Nbd7 12.c4 Qd1 13.Rfd1= –0.19; 8.Nd4 Be2 9.Ne2 Nf6 10.f4 Nbd7 11.Ng3 Qb4 12.Bc3 Qc4 13.d3= –0.12; 8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.f3 Qa4 12.Rc1 f5 13.fe4= –0.19) 8...Bh5 9.d3 Nf6 10.Nbd2 Qb4 11.Rb1 Qa4 12.a3 Nbd7 13.c4= 0.13; C3) 7...Be7 8.h3 (8.Bc3 Qd5 9.d3 f5 10.h3 Bh5 11.Bd2 Nf6 12.c4 Qg8 13.Nc3= –0.06; 8.c4 Nf6 9.h3 Bh5 10.d3 0-0 11.Bc3 Qc7 12.a4 Nbd7 13.a5= –0.19; 8.Nc3 Nf6 9.Ng5 Be2 10.Qe2 0-0 11.Qd3 d5 12.Qf5 Re8 13.f4=+ –0.31) 8...Be6 9.c4 Nf6 10.Ng5 Bf5 11.Bc3 Qa4 12.Qa4 Ra4 13.d4= 0.00; C4) 7...Nf6 8.h3 (8.c4 Be7 9.h3 Bh5 10.Nc3 0-0 11.Qc2 Qa6 12.d3 Nbd7 13.Nh4= –0.22; 8.Nc3 Be7 9.Ng5 Be2 10.Qe2 0-0 11.Qd3 d5 12.Qf5 Re8 13.f4=+ –0.31; 8.Bc3 Qd5 9.Bb4 Na6 10.Nc3 Qe6 11.Ba5 d5 12.Qb1 b5 13.a4=+ –0.44) 8...Bf5 9.c4 Qb6 10.Bc3 Be7 11.a4 Qc7 12.d4 e4 13.Nfd2= –0.09; D) 7.h3 D1) 7...Be6 8.0-0 (8.c4 Nf6 9.0-0 Be7 10.Ng5 Bf5 11.Bc3 Qa4 12.Qa4 Ra4 13.d4= 0.00; 8.Ng5 Bd7 9.0-0 Be7 10.Nf3 Nf6 11.c4 e4 12.Bc3 Qf5 13.Nd4=+ –0.41; 8.Nc3 Be7 9.0-0 b5 10.a3 Nd7 11.d4 Ngf6 12.e4 ed4 13.Nd4= –0.06) 8...Qb6 9.Ba3 Be7 10.c4 e4 11.Nd4 Bf6 12.Qb3 Nd7 13.Ne6= 0.06; D2) 7...Bf5 8.0-0 (8.Nc3 Nf6 9.g4 Be6 10.Ng5 Bc8 11.Nf3 h6 12.a4 Nbd7 13.Rg1=+ –0.53; 8.Bc3 Qa4 9.d3 Nf6 10.0-0 Be7 11.Bb2 0-0 12.Qd2 Nbd7 13.c4=+ –0.41; 8.a4 Nf6 9.Na3 Qc7 10.Nc4 b5 11.ab5 Ra1 12.Qa1 cb5 13.Na3= –0.03) 8...Qb6 9.Qc1 Nf6 10.c4 Nbd7 11.d4 e4 12.Nfd2 Be7 13.Nc3= 0.03; D3) 7...Bf3 8.Bf3 Nf6 9.0-0 Be7 10.c4 0-0 11.Nc3 Ra7 12.d4 ed4 13.Qd4= 0.19; D4) 7...Bh5 8.0-0 (8.Nc3 Nf6 9.g4 Bg6 10.Nh4 Be4 11.Ne4 Ne4 12.Nf5 g6 13.Ng3= 0.00; 8.Bc3 Qa4 9.d3 b5 10.Bd2 Nf6 11.g4 Bg6 12.e4 Be7 13.Nc3= –0.22; 8.a3 Nf6 9.0-0 b5 10.d3 Be7 11.c4 bc4 12.dc4 0-0 13.Bc3=+ –0.28) 8...Nf6 9.Bc3 Qd5 10.a4 Be7 11.d3 0-0 12.e4 Qe6 13.Ng5= 0.00.

7.0-0 Be6 (7...Nf6 8.Bc3 Qa4 9.Bb2 0-0 10.Nc3 Qa5 11.d4 e4 12.Nd2 d5 13.a4=+ –0.56; 7...Qb6 8.Bc1 (8.Qc1 Nf6 9.c4 Na6 10.d4 e4 11.Nfd2 0-0 12.Nc3 Bf5 13.f3= –0.03; 8.Bc3 Nf6 9.a4 Qc7 10.Re1 0-0 11.d3 b6 12.Qd2 Nd5 13.Bb2=+ –0.34) 8...e4 9.Nd4 Bf6 10.Nc3 Bd4 11.Rb1 Qa7 12.ed4 Nf6 13.d3+= 0.47; 7...Qb4 8.Bc1 (8.Qc1 Nf6 9.c4 0-0 10.Ba3 Qa5 11.c5 Rd8 12.d3 e4 13.de4=+ –0.37; 8.Bc3 Qa4 9.d3 Nf6 10.Bd2 0-0 11.Nc3 Qa3 12.Nb1 Qa7 13.c4= –0.25) 8...Nf6 9.Nc3 Qa5 10.Bb2 0-0 11.a3 b6 12.e4 Nbd7 13.d4= –0.19; 7...Nd7 8.c4 (8.d3 Ngf6 9.Bc3 Qc7 10.a4 b6 11.Qe1 0-0 12.a5 Re8 13.Qd2=+ –0.28; 8.Bc3 Qd5 9.a4 Ngf6 10.a5 0-0 11.Bb4 c5 12.Bc3 e4 13.Ne1=+ –0.37; 8.a4 Ngf6 9.Bc3 Qc7 10.d4 e4 11.Nfd2 d5 12.h3 0-0 13.a5=+ –0.47) 8...Ngf6 9.d4 e4 10.Nfd2 0-0 11.Qc2 Qf5 12.Nc3 d5 13.Rfb1= –0.03) 8.c4 (8.Nc3 b5 9.a3 f5 10.d4 e4 11.Nd2 Nf6 12.d5 Bd5 13.Nd5= 0.03; 8.d3 Qb6 9.Ba3 Nf6 10.Ng5 Bf5 11.e4 Bd7 12.Nf3 Qd8 13.Bb2= –0.22; 8.a4 Nf6 9.Ng5 Bf5 10.Bc3 Qc7 11.f4 e4 12.d3 d5 13.de4= –0.09) 8...Nd7 (8...Nf6 9.Ng5 Bf5 10.Bc3 Qc7 11.d4 Nbd7 12.Nd2 h6 13.Ngf3= –0.19) 9.d4 (9.Nc3 Ngf6 10.Ng5 Bf5 11.f4 ef4 12.Rf4 Bg6 13.Nge4= –0.03) 9...h6 (9...Ngf6 10.Bc3 Qc7 11.Nbd2 0-0 12.Qc2 ed4 13.Bd4= 0.00) 10.Nbd2 (10.Qb3 Qc7 11.Nbd2 Ngf6 12.e4 0-0 13.Rfb1= 0.06) 10...Ngf6 11.e4 Bg4 (11...0-0 12.Re1 ed4 13.Bd4= 0.00) 12.Nb3 Qc7 13.de5 (13.Nfd2= 0.25) 13...de5 14.Nfd2 Be6 15.Qc2 0-0 16.a4 Nc5 17.f4 (17.a5!?=) 17...ef4-/+ 18.Kh1 (better 18.Nc5!? Bc5 19.Kh1-/+) 18...Na4-+ 19.Bd4 c5 20.Bg1 Nd7 21.Nc1 Nab6 22.Ra8 Ra8 23.Nd3 Bd6 24.h3 g5 25.e5 Ne5 26.Ne5 Be5 27.Ne4 Nd7 28.Rb1 b6 29.Nd2 Rd8 30.Nf3 Bf6 31.Bf2 Ne5 32.Ng1 Rd6 33.Ra1 Qd7 34.Ra8 Kg7 35.Be1 Bf5 36.Qa2 Be4 37.Ra7 Qc6 38.Bh5 Rd7 39.Ra3 Qe6 40.Bc3 Nc4 41.Bg4 Qd5 42.Bf6 Kf6 43.Ra4 b5 44.Rc4 bc4 (44...Qc4?! 45.Qc4 bc4 46.Bd7-+) 45.Bd7 Qd7 46.Qc4 Qc6 47.Qc3 Kg6 48.Nf3 Bf3 49.gf3 c4 50.Kg2 Qd5 51.Qh8 (51.Qe1-+) 51...Qd2 52.Kf1 Qd3 53.Kf2 Qe3 54.Kg2 Qe2 55.Kg1 Qe1 56.Kh2 Qg3 (better 56...c3 57.Qa8 Qd2 58.Kh1-+) 57.Kh1 Qh3 58.Kg1 Qg3 59.Kh1 Qf3 60.Kg1 Qe3 61.Kh2 (61.Kf1-+) 61...Qe2 62.Kh3 g4 63.Kh4 Qh2 64.Kg4 Qg3 0–1. Kozlowski,Tomasz (1990) – Bajerlan,Dawid (1980), Poznan Poland, 2010.

7.a4 A) 7...Nf6 8.Bc3 (8.Na3 e4 9.Nc4 Qc7 10.Ng1 d5 11.Be5 Qd8 12.Nb2 0-0 13.Bf4-/+ –0.97; 8.c4 0-0 9.0-0 Bg4 10.Bc3 Qc7 11.a5 Ne4 12.Qb3 Re8 13.h3=+ –0.41; 8.0-0 0-0 9.Na3 Qc7 10.Nc4 b6 11.Qb1 e4 12.Ne1 Nbd7 13.f4-/+ –0.78) 8...Qc7 9.0-0 0-0 10.d3 b6 11.Qe1 Na6 12.a5 b5 13.Bb2=+ –0.34; B) 7...b6 8.c4 (8.Na3 Qd5 9.c4 Qe6 10.0-0 Qg6 11.d3 Bh3 12.Ne1 Nf6 13.f4= 0.00; 8.Bc3 Qd5 9.d3 Nf6 10.e4 Qe6 11.Nbd2 0-0 12.0-0 Re8 13.d4= 0.00; 8.Nc3 Be6 9.0-0 Nh6 10.d4 0-0 11.Ne4 Nd7 12.c4 d5 13.cd5= –0.09) 8...Qa7 9.d4 e4 10.Nfd2 Nf6 11.Nc3 d5 12.cd5 cd5 13.0-0= 0.22; C) 7...Nd7 8.c4 (8.Bc3 Qc7 9.0-0 Ngf6 10.d4 e4 11.Nfd2 d5 12.h3 b6 13.Nb3=+ –0.56; 8.0-0 Ngf6 9.Bc3 Qc7 10.d4 e4 11.Nfd2 d5 12.h3 0-0 13.a5=+ –0.47) 8...Ngf6 9.Bc3 Qc7 10.d4 e4 11.Nfd2 d5 12.c5 h5 13.a5+= 0.28; D) 7...Be6 8.Bc3 Qc7 9.0-0 Nf6 10.Ng5 Bd7 11.f4 Nd5 12.Nf3 Nc3 13.Nc3=+ –0.44.

7.Bc3 A) 7...Qa4 8.Bb2 (8.0-0 Nf6 9.Bb2 Bf5 10.d3 0-0 11.Nc3 Qb4 12.Rb1 b5 13.e4= –0.19) 8...Bf5 9.d3 Nf6 10.0-0 0-0 11.Nc3 Qb4 12.Rb1 b5 13.e4= –0.19; B) 7...Qc7 8.Bb2 (8.0-0 b5 9.Bb2 Be6 10.Nc3 b4 11.Ne4 Ra2 12.Ra2 Ba2 13.c4=+ –0.47; 8.d4 e4 9.Nfd2 d5 10.0-0 Bd6 11.h3 b5 12.Nb3 Nf6 13.Qd2=+ –0.56; 8.Bc4 Nd7 9.0-0 b5 10.Bb3 Ngf6 11.d4 e4 12.Nfd2 d5 13.a4-/+ –0.81) 8...Nf6 9.0-0 0-0 10.c4 Bf5 11.d4 Nbd7 12.Nc3 Rfb8 13.Nh4= –0.12; C) 7...Qd8 8.0-0 b5 9.Bb2 Be6 10.d4 e4 11.Nfd2 d5 12.f3 ef3 13.Bf3=+ –0.28; D) 7...Qd5 8.Bb2 Qe6 9.Nc3 Nf6 10.0-0 0-0 11.Ng5 Qf5 12.f4 e4 13.Qe1=+ –0.47.

7.c4 A) 7...Qc7 8.d4 (8.0-0 Nf6 9.d4 e4 10.Nfd2 d5 11.Nc3 0-0 12.cd5 cd5 13.f3= –0.03; 8.Qc2 Nf6 9.d4 e4 10.Nfd2 Bf5 11.Nc3 d5 12.Rc1 Qd7 13.0-0= –0.06; 8.Nc3 Nf6 9.0-0 Bf5 10.d3 Nbd7 11.Qd2 0-0 12.e4 Bg6 13.Rfb1= 0.00) 8...e4 9.Nfd2 Qb6 10.Qc2 Nf6 11.Nc3 Bf5 12.0-0 d5 13.a4= 0.25; B) 7...Nd7 8.Nc3 (8.Bc3 Qc7 9.d4 Ngf6 10.Nbd2 e4 11.Ng5 d5 12.c5 Nb8 13.h4=+ –0.41; 8.0-0 Ngf6 9.Nc3 0-0 10.d4 e4 11.Nd2 d5 12.c5 b5 13.cb6= –0.09; 8.Qc2 Ngf6 9.0-0 0-0 10.d4 e4 11.Nfd2 Qf5 12.Nc3 d5 13.Rfb1= –0.03) 8...Ngf6 9.0-0 0-0 10.d4 Re8 11.Rb1 b6 12.d5 Bb7 13.e4= –0.03; C) 7...Qb6 8.Qc2 (8.Bc3 Nf6 9.0-0 0-0 10.d4 e4 11.Nfd2 Be6 12.Qc2 Bf5 13.a4= 0.00; 8.Qb3 Qb3 9.ab3 Ra1 10.Ba1 Nf6 11.d4 e4 12.Nfd2 d5 13.Bb2= –0.09; 8.Qc1 Nf6 9.0-0 Na6 10.d4 e4 11.Nfd2 Bf5 12.Nc3 0-0 13.f3= –0.03) 8...Bf5 9.d3 Nf6 10.0-0 Na6 11.Nbd2 Nb4 12.Qb1 Nd3 13.Bd3= 0.16; D) 7...Nf6 8.Qc2 (8.Bc3 Qc7 9.0-0 0-0 10.d4 Nbd7 11.Qc2 b6 12.Bd3 ed4 13.ed4= –0.19; 8.Qb3 e4 9.Nd4 Qg5 10.g3 Na6 11.f4 Qa5 12.Nc3 Nc5 13.Qc2=+ –0.41; 8.0-0 0-0 9.Nc3 Bf5 10.d4 Nbd7 11.a3 Rfe8 12.Ra2 Ra7 13.Ra1=+ –0.31) 8...Bg4 9.Nc3 Qa6 10.c5 Qa5 11.cd6 Bd6 12.Ne4 Ne4 13.Qe4= –0.12.

5.Bc3 Qd5 6.a3 (6.a4 e5=) 6...e5 7.e3 (7.Bb2 Ne7=) 7...d6 (7...Qe6 8.a4=) 8.d4 (8.a4 b6=) 8...Bg4 (8...e4 9.Nfd2=) 9.Be2 Be7 (9...e4 10.Nfd2 Be2 11.Qe2=) 10.0-0 (10.Bb4 Na6 11.Nc3 Qf7=) 10...Nh6 (10...e4 11.Nfd2 Be2 12.Qe2=) 11.h3 White is in command 11...Bh5 12.Bb4 Na6 (12...e4 13.Nfd2 Be2 14.Qe2=) 13.Nc3+= Qe6 14.d5 Qd7 15.Ne5 Be2 (15...de5 16.Bh5) 16.Nd7 Bd1 17.Nb6 Ra7 (17...Nb4 18.Na8 Nc2 19.Rad1+- (19.Rfd1?! Na1 20.Ra1 Kf7+=)) 18.Rad1 (18.Rfd1 Nf7+-) 18...Nb4 (18...Nf7 19.dc6 bc6 20.Nc8+/–) 19.ab4 Nf7 (19...Ra6 20.Nc4 Kf7 21.Ne4+/–) 20.Nc8 (20.Ra1!? Ra1 21.Ra1 f5+-) 20...Ra3 (20...Ra8 21.Ne7 Ke7 22.Ra1+/–) 21.Ne4 (21.Ne2 Kd7 22.Ne7 Ke7+/–) 21...Kd7 22.Ne7 Ke7 23.c4 Rb3 (23...Ra4 24.Rb1+/–) 24.Rb1 Rb1 25.Rb1 Ra8 (25...cd5 26.cd5 Rc8 27.g4+/–) 26.dc6+- bc6 27.b5 cb5 (27...Rb8 28.Nc3+-) 28.cb5 Nd8 (28...Rb8 29.Nc3+-) 29.b6 Nb7 (29...Ke6 30.Nc3+-) 30.Rc1 Rd8 31.Ng3 g6 32.Rc7 Rd7 33.Ne4 Rc7 34.bc7 Kd7 35.Nf6 Kc7 36.Nh7 Nc5 37.Nf8 g5 38.Nh7 Ne6 39.Kh2 d5 1–0. Kuperski,Marek – Gugulski,Marcin, corr 2. AMM, Poland, 1994.

5.e4 Qb4 6.Bd4 e5 =.

5.e4 d5 6.ed5 cd5 7.c4 e6 8.Qb3 dc4 (8...Nc6!?=) 9.Bc4+= Be7 (9...Qb4 10.0-0 Qb3 11.Bb3+=) 10.0-0 Bd7 (10...Qb4!?+/–) 11.Be6 Be6 12.Qe6 Nd7 13.Nc3 Ra6 14.Qe4 Ne5 (14...Nc5 15.Qc4 Ne6+-) 15.Ne5 fe5 16.Nd5 Nf6 17.Nf6 Bf6 18.Bc3 Qc7 19.Be5! Be5 (19...Qe5 20.Qe5 Pinning; 19...Be5 20.d4 Passed pawn) 20.d4 Re6 21.de5 0-0 22.f4 b5 23.Qd5 Qb6 24.Kh1 Kh8 25.f5 Ree8 26.Rab1 Rd8 (26...Qe3 27.e6 (27.Rb5?! Rf5 28.Qd1 Rfe5+/–) 27...b4 28.Qc4+-) 27.Qb5 Qd4 28.e6 Rb8 (28...Rfe8+-) 29.Qb8 Kg8 30.e7 Rb8 31.Rb8 Kf7 32.e8Q Kf6 33.Rb7 Kg5 34.Qe7 Kg4 35.Rb4 (35.h3 Kh5 36.g4 Qg4 37.hg4 Kg4 38.Rb4 Kg3 39.Qe3) 35...Qb4 36.Qb4 Kg5 37.Qe7 Kh6 (37...Kg4 38.h3 Kh5 39.g4 Kh6 40.Qh4) 38.Qh4 1–0. Law,Stephen (1870) – Damasio,Fabio, IECG, 2004.

5.Bc3 Qb6 6.Bd4 (6.e3 d6=) 6...c5 7.Bf6 Qf6 8.Nc3 e6 9.e4 (9.Nb5 Ra5 10.e4 Nc6=+) 9...Nc6 10.Nb5 Qf4 11.Be2 Ra5 12.Nc3 Be7 13.g3 Qh6 (13...Qf6 14.Rb1=+) 14.0-0 (14.Rb1 0-0=+) 14...Bf6-/+ 15.a4 (15.Re1 0-0-/+) 15...0-0 16.Bb5 d6 17.Rb1 Qg6 18.Re1 Nd4 19.Bd3 (19.Nd4 cd4 20.Na2 Rd8=+) 19...Nf3-/+ 20.Qf3 Qg5 21.Red1 Bc3 22.dc3 e5 23.Qe2 (23.Be2 Qg6=+) 23...Ra4 24.Bb5 Ra3 25.Rd6 Rc3 26.Qd1 (26.Qd2 Qd2 27.Rd2 g5-/+) 26...Bg4 27.Be2 Be2 28.Qe2 Qe7 (28...b5 29.Rd5=+) 29.Rdb6= Exerts pressure on the backward pawn 29...h6 30.Rb7 Qe6 31.R1b2 Qc4 (31...Ra8 32.Qd1=) 32.Qc4 Rc4 33.Rc7 g5 (33...Kh7 34.f3=) ½–½. Van Esbroeck,Jeff – Bendig,Frank, corr TKM/A001, 1999.

5.Bc3 Qc7 6.e3 g6 7.Bf6 (7.h4 Bg7=+) 7...ef6 8.c4 Bg7 9.d4 0-0 10.Bd3 f5 11.0-0 d6 (11...Na6 12.Qa4=+) 12.Nc3 Nd7 13.Qb3 Nf6 14.Rfb1 Re8 15.a3 (15.Na4 Nd7=+) 15…h6 ½–½. Klaus Behrmann – Bury born and bred, ChessWorld.net, 2004.

5.Nc3 e6 6.e3 Be7 7.Be2 0-0 8.0-0 d5 9.d4 b6 10.Qd2 Ba6 11.Ba6 Na6 12.a3 c5 13.dc5 bc5?? (13...Nc5 14.Nd4 Rfc8 15.Nb3+=) 14.Rfb1?? (14.Nd5 Qd8 15.Nf6 Bf6 16.Qd8 Bd8+-) 14...Rfb8?? (14...Nc7 15.Nd1+=) 15.Ne2?? (better is 15.Nd5 Qd2 16.Ne7 (16.Nd2? ed5 17.c4 Ra7-+) 16...Kf8 17.Ng6 fg6 18.Nd2+-) 15...Qd2 16.Nd2 Rb7 17.Be5 Rba7 18.Nc3?? Nd7 19.Nb5 Ne5-+ 20.Na7 Ra7 21.Rb8?? Nb8 22.Rb1 Nec6 0–1. Fournier,Frederic (1645) – sebita3 (1635), Active, 2006.

5.c4 d5 6.Bc3 (6.cd5 Qd5 7.Nc3 Qa5=) 6...Qa4 (6...Qd8 7.e3=) 7.Qa4 Ra4 8.Bf6 ef6 (8...gf6 9.cd5 cd5 10.Nc3=) 9.cd5 cd5 10.e3 Ra5 11.Nc3 Bb4 (better is 11...Nc6!?=) 12.Bb5 Bd7 (12...Kd8 13.a4 Bd7+=) 13.Bd7 (13.Nd5 Rb5 14.Nc7 Ke7 15.Nb5 Bb5 16.a3+=) 13...Kd7= 14.Ke2 Nc6 15.a3 Bc3 16.dc3 Rha8 17.Rhb1 Kc7 18.Rb3 (18.Nd4 Nd4 19.cd4 Ra3 20.Rc1 Kd6+=) 18...Ne5 (18...b6 19.Nd4=) 19.Nd4 (19.Rab1 Rb8=) 19...b6 20.Rb4 Nc6 (20...Nc4 21.a4=) ½–½. Woelfelschneider,Peter – Pommerel,Wim, email 4AMM–F, 1998.

5.e3 Na6 6.Be2 Nc5 7.Bc3 (7.Nc3 b5=) 7...Qa7 (7...Qc7 8.0-0=) 8.0-0 (8.a4 d6+=) 8...d6 (8...b6 9.Bb4=) 9.Bc4 (9.a4 e6+= (< 9...Na4 10.Bf6 ef6 11.c4+/–)) 9...b5= 10.Bb3 Qd7 (10...Bg4 11.d3=+) 11.d3 Bb7 (11...Nb3 12.ab3 Ra1 13.Ba1=) 12.Nbd2= Na4 (12...e5 13.Ng5 Nb3 14.ab3 Ra1 15.Ba1=) 13.Ba4 Ra4 14.Qb1 (14.e4 e5=) 14...e5=+ 15.e4 (15.Qb3 Be7=+) 15...Be7 16.Re1 (16.Qb3 0-0=+) 16...0-0-/+ 17.Nf1 Nh5 (17...Rfa8 18.Ng3-/+) 18.Ne3=+ Nf4 (18...Bf6 19.Qb2=+) 19.Nf5 Bf6 (better is 19...Rfa8=+) 20.g3 (better is 20.d4!?=+) 20...Ne6-/+ 21.Qb2 (21.Qd1 g6 22.Ne3 Bg7-+) 21...g6-+ 22.Nh6 (22.Ne3 Bg7-+) 22...Kg7 (22...Kh8!? 23.Ng4 Bg7 24.Nfe5 de5 25.Be5-+) 23.Ng4 (23.Bd2 Kh8-+) ½–½. "Maradona" (1715) – Garfield85 (1855), internet, 2006.

5.e3 Na6 6.Be2 d6 7.0-0 =.

5.e3 Na6 6.Be2 g6 7.0-0 Bg7 8.c4 Nc5 (8...0-0 9.d4=) 9.Bc3 Qa4 10.Qa4 Na4 11.Nd4 (11.Re1!?=) 11...Ne4-/+ 12.f3 (12.Rd1 Nec3 13.Nc3 d6-/+) 12...Nec3 13.Nc3 Nc3 14.dc3 Ra3 15.Rfc1 d6 16.Kf2 f5 17.Nb3 c5 18.g3 Be6 19.e4 (better is 19.Rc2!?-/+) 19...fe4-+ 20.fe4 0-0 21.Ke3 (21.Kg1 Rfa8-+) 21...b5! 22.Nd2 Bc3 23.Nb1 Bd4 24.Kd2 Raa8 25.Nc3 b4 26.Nb5 Ba1 27.Ra1 Rf2 28.Ke3 Re2! 29.Ke2 Bc4 30.Kd2 Bb5 31.Kc2 Ba4 32.Kb2 c4 33.Rc1 c3 34.Kb1 Bb5 35.Rd1 c2! (35...c2 36.Kc2 Ba4 37.Kc1 Bd1 38.Kd1 Ra2-+) 0–1. Neumann,Frank (1650) – Markus,Roland (2440), RSXE – Ostern, 2009.

5.e3 b5 6.Bd3 (6.c4 bc4 7.Bc4 d5=) 6...g6 (6...d5 7.0-0=) 7.0-0 Bg7 8.c4 bc4 9.Bc4 0-0 10.d4 Ba6 11.Nbd2 d6 12.Re1 Nbd7 13.Qc2 Rab8 (13...Bc4 14.Nc4 Qa4 15.Rec1=) 14.Bc3+= Qb6 15.Reb1 Qa7 16.Qa4 Rb1 (16...Nd5 17.Bb2 (17.Ba6? Nc3 18.Qc6 Nb1 19.Rb1 Rb1 20.Nb1 Nb8-+) 17...Rb6 18.e4+=) 17.Rb1+/– Nb8 (17...Nd5 18.Qa6 Qa6 19.Ba6 Nc3+=) 18.h3 (18.Rb8 Rb8 19.Qa6 Qa6 20.Ba6 Nd5+=) 18...Nfd7 (better is 18...Nd5!? 19.Bb2 Nb6=) 19.Ba6+/– Qa6 20.Qa6 Na6 21.Rb6?? (better is 21.Rb7 Nab8 22.a4+/–) 21...Nb6-+ 22.Ba5 Rb8 23.Bb6 Rb6 24.Nc4 Rb1 25.Kh2 c5 26.Ncd2 Rb2 27.a4 Ra2 28.dc5 Nc5 29.Kg1 Ra4 30.g3 Ra2 31.Nc4 Nd3 32.Ncd2 Bc3 33.Ne4 Ba5 34.g4 d5 35.Ng3 Nf2 36.h4 Ne4 37.Ne4 de4 38.Ng5 f5 39.gf5 gf5 40.Ne6 Bb6 0–1. jammboy – kehrsam, ChessWorld.net, 2006.

5.Bf6 ef6 6.e3 A) 6...b5 7.c3 (7.Be2 d5 8.0-0 Bd6 9.d4 0-0 10.Nbd2 Re8 11.Bd3 f5 12.Nb3=+ –0.44; 7.c4 b4 8.Be2 d5 9.Qb3 Be6 10.d4 dc4 11.Bc4 Bc4 12.Qc4=+ –0.41; 7.e4 Be7 8.c4 b4 9.Qb3 f5 10.e5 f6 11.ef6 Bf6 12.d4=+ –0.59) 7...d5 8.d4 Bd6 9.Bd3 0-0 10.Qc2 h6 11.0-0 Re8 12.Nbd2= –0.25; B) 6...b6 7.Be2 d5 8.0-0 Bd6 9.d4 0-0 10.c4 Re8 11.Qb3 Be6 12.Nc3= 0.00; C) 6...d5 7.Be2 Bd6 8.0-0 0-0 9.d4 b5 10.Bd3 Re8 11.c3 Bg4 12.h3=+ –0.34.

5.Bf6 gf6 6.c3 A) 6...d5=+ 7.Qc2 (7.e3 e5 8.d4 Bd6 9.Nfd2 Nd7 10.de5 Be5 11.Be2 Nc5 12.0-0=+ –0.47; 7.d3 e5 8.e3 Rg8 9.Rg1 Be6 10.Qc2 Nd7 11.Nbd2 Bd6 12.Be2=+ –0.41; 7.d4 e5 8.de5 fe5 9.Ne5 Bg7 10.Nf3 Bf5 11.Nfd2 b5 12.Qc1=+ –0.59; 7.h3 e5 8.e3 Rg8 9.d3 Bd6 10.Nfd2 Nd7 11.g4 f5 12.gf5=+ –0.56) 7...Bg4 8.d4 e5 9.Nbd2 e4 10.Ng1 Be6 11.e3 Bd6 12.Nb3=+ –0.28; B) 6...e5 7.e4 (7.Qc2 d5 8.d4 e4 9.Nfd2 b5 10.e3 Bd6 11.f3 f5 12.Be2=+ –0.31; 7.d4 d5 8.de5 fe5 9.Ne5 Bg7 10.Nf3 Bf5 11.Nfd2 b5 12.Qc1=+ –0.59) 7...d5 8.ed5 Qd5 9.d4 Bg4 10.Be2 Ra2 11.Ra2 Qa2 12.0-0=+ –0.31.

5.Bf6 gf6 6.Nc3 A) 6...b5 7.a4 b4 8.Nb1 d5 9.e3 e5 10.d4 Bd6 11.Nfd2 Be6 12.Nb3= –0.19; B) 6...Bg7 7.Nd4 (7.e3 f5 8.Nd4 d5 9.Bd3 f4 10.0-0 e5 11.Nb3 Qc7 12.ef4=+ –0.41) 7...d5 8.e3 e5 9.Nb3 Qa3 10.Nb1 Qd6 11.d4 b5 12.Bd3=+ –0.28; C) 6...f5 7.Nd4 (7.e3 Bg7 8.Nd4 d5 9.Bd3 f4 10.0-0 e5 11.Nb3 Qc7 12.ef4=+ –0.41) 7...Bg7 8.e3 d5 9.Bd3 f4 10.0-0 e5 11.Nb3 Qc7 12.ef4=+ –0.41.

5.Bf6 gf6 6.Nd4 A) 6...e5 7.Nb3 Qd8 8.e4 d5 9.ed5 cd5 10.Nc3 Nc6 11.Qf3 e4 12.Qe3= –0.12; B) 6...d5 7.e3 (7.Nc3 e5 8.Nb3 Qd8 9.e4 d4 10.Ne2 f5 11.Ng3 fe4 12.Qh5=+ –0.47; 7.Nb3 Qd8 8.e3 e5 9.d4 b5 10.Be2 Rg8 11.0-0 Bd6 12.Kh1=+ –0.53) 7...e5 8.Nb3 Qc7 9.h3 Rg8 10.Qf3 e4 11.Qh5 Rg7 12.d4=+ –0.44; C) 6...Qc7 7.Nc3 (7.Nf3 d5 8.e3 b5 9.Qe2 Bf5 10.d3 e5 11.e4 Be6 12.ed5=+ –0.62) 7...d5 8.Nf3 e5 9.e3 Bb4 10.Ne2 b5 11.Ng3 Ra3 12.Be2=+ –0.53.

5.Bf6 gf6 6.e3 A) 6...d5 7.c4 (7.Nd4 e5 8.Nb3 Qd8 9.d4 b6 10.a3 b5 11.f3 Qe7 12.Be2=+ –0.50; 7.c3 e5 8.d4 Bd6 9.Nfd2 Nd7 10.de5 Be5 11.e4 Nc5 12.ed5=+ –0.37; 7.Nc3 e5 8.Ne2 Nd7 9.Nc1 b5 10.Be2 Rg8 11.Nb3 Qa3 12.0-0=+ –0.69; 7.Be2 Rg8 8.0-0 Bh3 9.Nh4 e5 10.Kh1 Be6 11.f4 b5 12.d4=+ –0.41; 7.h3 b5 8.c3 e5 9.d3 Bd6 10.Be2 Rg8 11.g3 Be6 12.Qc2=+ –0.56) 7...Bg7 8.Qb3 dc4 9.Bc4 Rf8 10.0-0 b5 11.Be2 Qa4 12.Qb2+= 0.31; B) 6...e5 7.c4 (7.Be2 d5 8.0-0 Rg8 9.Kh1 b5 10.c3 Bd6 11.d3 Be6 12.c4=+ –0.53) 7...Bb4 8.Qc2 d6 9.Be2 f5 10.0-0 Rg8 11.d4 Be6 12.Rd1= 0.00.

5.Bf6 gf6 6.e4 d5 (6...d6 7.Bd3=+ (7.c3 f5 8.Bd3 fe4 9.Be4 d5 10.Bc2 Qb6 11.Qc1 Bg7 12.d4=+ –0.41; 7.Bc4 Rg8 8.0-0 f5 9.Bd3 fe4 10.Be4 Qh5 11.Re1 Bg4 12.Kh1-+ –1.62) 7...Rg8 8.Rg1 Bg7 9.c3 Nd7 10.Bc2 Qb6 11.a4 Ne5 12.Ra3=+ –0.28; 6...Bg7 7.c3 d5 8.ed5 Qd5 9.Qc2 Bf5 10.d3 Nd7 11.Nd4 Bg6 12.Nd2=+ –0.34; 6...f5 7.ef5 (7.e5 Bg7 8.Qe2 e6 9.c3 f6 10.ef6 Bf6 11.d4 d6 12.Qe3= –0.09) 7...Bg7 8.c3 Qf5 9.d4 Qe6 10.Be2 0-0 11.Qc2 b5 12.0-0= 0.19) 7.ed5= cd5 (7...Qd5 8.Nc3 Qe6 9.Be2 Rg8 10.g3 Bg7 11.Nd4 Qd6 12.Nb3=+ –0.31) 8.Be2 (8.Nc3 Rg8 (8...e6= 9.Bb5 Bd7 10.Qe2 Kd8 11.Bd7 Nd7 12.0-0= 0.06) 9.Rb1 e6 10.Rb5 Qc7 11.Qe2 Be7 12.Qd3= –0.06) 8...e5 (8...Rg8 9.g3 e5 10.h3 Nc6 11.Rh2 e4 12.Nh4-/+ –0.94) 9.0-0 Nc6 (9...Rg8 10.Kh1 Nc6 11.c3 Qa4 12.Qa4=+ –0.66) 10.Re1 (10.Nc3 Rg8=+ 11.Bb5 Bh3 12.Ne1=+ –0.41) 10...Be6 (10...e4 11.Nh4 f5 12.Bf1=+ –0.66) 11.Nc3 (11.c3=+ e4 12.Nh4=+ –0.56) 11...0-0-0 Black plans d4 (11...e4 12.Nh4-/+) 12.Rb1 (12.Nb5 Rg8=) 12...Bb4 (12...e4 13.Nh4=) 13.Nb5= d4 (worse 13...Qa2 14.Ra1 Qb2 15.c3+-) 14.a3 Bc5 (14...Ba3? 15.Ra1 (15.Na3?! Qa3 16.Bd3 Qd6=) 15...d3 16.Bd3 (16.Ra3?! de2 17.Qe2 Qb4+-; 16.Na3?! de2 17.Qe2 Qd5+-) 16...Rd3 17.cd3 Qb5 18.Ra3+-) 15.Bd3 Ne7 (15...Rd7 16.Qe2=) 16.Be4 (16.Nh4 A) 16...Ba3? 17.Ra1+- (17.Na3?! Qa3 18.Be4 Nd5+=); B) 16...Nd5+=) 16...Bd5 (16...b6!?=) 17.Bd5 Rd5 18.Qe2 (18.Re4 Kd8+=) 18…Rhd8 ½–½. Finke,Thilo (1990) – Hingst,Thomas (2085), RSS5E NoEngine–98, 2009.

5.g3 d5 6.Bg2 Nbd7 7.0-0 Qb6 8.Qc1 e6 9.d4 c5 (9...Qa6 10.Re1+=) 10.Nbd2 (10.c4 dc4 11.a4 cd4 12.Bd4 Qb4=) 10...cd4 11.Bd4 Qc7 12.c4 e5 13.Bb2 d4 14.Rd1 Nc5 (14...Bd6 15.Nb3+=) 15.Ne1 (15.Nb3 Bg4=) 15...Bg4 (15...Bd6 16.Nb3-/+) 16.Ndf3+= Ra4 17.Qc2 (17.e3 e4 18.ed4 ef3 19.Nf3 Ne6+=) 17...Be6 (17...Bd6 18.Nd3 Bf5 19.Nh4-/+) 18.Nd2 Be7 (18...Bd6 19.Nd3 Bf5 20.Nb3 Nd3 21.ed3+=) 19.Nd3+= Bf5 20.Nb3 (20.f4 Ng4 21.Nf1 f6+=) 20...Nfd7 (20...Nd3 21.ed3 b5 22.Rdc1=) 21.Nbc5 Nc5 22.f4 ef4 23.gf4 Bf6 24.Bh3 Bd3 25.ed3 Qf4 26.Re1 Be5 27.Bc1 Qf6 28.Qe2 Qg6 29.Kh1 0-0 30.Rg1 Qd6 31.Bg5 Raa8 32.Bf5 Rfe8-+ 33.Qg2 g6 34.Rad1 Bg7 35.Bh3 Ra3 36.Qc2 Ne4 37.Rge1-/+ Rea8 38.Be7 Qc6 39.de4 Ra2 40.Qd3 Qc7 41.e5 Be5 42.Bg2 Qe7 43.Qd4 Re8 44.Qe4 Qg5 45.Rd5 Re6 46.Rb5 Qd2 47.Rf1 Bh2 48.Qb7 Bc7 49.Rb3 Re1 (49...Re1 50.Qf3 Qh6 51.Bh3 Rh2 52.Kg1 Qg5 53.Bg2 Qc5 54.Re3 Rg2 (54...Re3?! 55.Qf7 Kh8 56.Qf6 Kg8 57.Qf7 Kh8 58.Qf6 Kg8 59.Qf7=) 55.Kg2 Qg5 (55...Qe3?? 56.Qf7 Kh8 57.Qf8; 55...Re3?! 56.Qf7 Kh8 57.Qf6 Kg8 58.Qf7 Kh8 59.Qf6 Kg8 60.Qf7=) 56.Qg3 Bg3 (56...Qe3?! 57.Qe1 Qg5 58.Kh3+=) 57.Rg3 Qd2 58.Rf2 Qd1-+) 0–1. Malmstroem,Jan – Pommerel,Wim, email 4AMM–F, 1998.

5.g3 g6 6.Bg2 Bg7 7.0-0 0-0 8.d3 d5 9.Nbd2 Qc7 10.c4 Nbd7 11.Qc1 Ne5 12.Be5 Qe5 13.Ne5 dc4 14.Ndc4 b5 15.Nb6 Rb8 16.Nc8 Rbc8 17.Rb1 Nd5 18.Nc6 Kh8 19.Bd5 e6 20.Bg2 1–0. giorgo – pjr, playok.com, 2012.

6.Bc3 Qa4 7.Qa4 Ra4 8.d3 (8.Bf6 ef6 9.e3 Be6=) 8...e5=+ 9.e4 Be7 (9...Bg4 10.Be2=+) 10.Be2 Nbd7 11.0-0 0-0 12.Nbd2 Nc5 (12...Ra3 13.Bb4 Ra6 14.d4=+) 13.Rfb1 h6 (13...Ra3 14.Bb4 Rd3 15.Bc5 Rd2 16.Nd2 dc5 17.Rd1+=) 14.h3 (14.Nb3 Nb3 15.ab3 Ra1 16.Ra1 Kh7+=) 14...Ra6 (14...Ra3 15.Bb4 Rd3 16.Bc5 Rd2 17.Nd2 dc5 18.Rd1+=) 15.Bb4 Ne6 16.Bf1 Nd7 17.Nb3 (17.Be2 Nf4 18.Bf1 c5=+) 17...f5 18.ef5 Rf5 19.d4 c5 (19...Rf3 20.gf3 ed4 21.c5 dc5 22.Ba6 ba6 23.Rc1-/+) 20.dc5 dc5 (21.Bc3 Nd4=+). Law – Seack,Ingo, corr 3GMM–12, 1995.

6.Bc3 Qb6 7.d4 e5 (7...e6 8.Nbd2+=) 8.e3 (8.de5 de5 9.Ne5 Ne4=) 8...e4 9.Nfd2 Be7 10.Qb3 (10.Be2 0-0=) 10...Qb3 11.ab3 Ra1 12.Ba1 Na6 (12...Na6 13.d5 Bf5=; 12...d5 13.cd5 cd5 14.f3=). Baer,Werner – Bendig,Frank, corr TKM/A001, 1999.

6.Bc3 Qc7 7.d4 g6 (7...Bf5 8.e3=) 8.Nbd2 (8.e3 Bg7+=) 8...Bg7 9.e4 0-0 10.Be2 Bg4 (10...c5 11.d5=) 11.Qc2 (11.h3 Bf3 12.Bf3 Nfd7=) 11...Nbd7 (11...c5 12.d5=) 12.0-0 (12.h3 Bf3 13.Nf3 c5=) 12...Nh5 (12...c5 13.d5=) 13.h3 Nf4 14.Bd1 (14.Rfe1 Bf3 15.Nf3 c5=) 14...Bf3 15.Nf3 e5 (15...c5 16.Bd2 Ne6 17.Be2 cd4 18.Qd3-/+) 16.de5 (16.Bd2 f5=) 16...de5 (16...Ne5 17.Ne5 Be5 18.Bg4=) 17.g3 (17.Be2 Rfd8=) 17...Ne6 (< 17...Nh3 18.Kh2+/–) 18.Be2 c5 (18...Nd4 19.Bd4 ed4 20.Bd3=+) 19.Rfd1 (19.Rad1 Nd4 20.Nd4 ed4=+) 19…Nd4 =+. Grigutsch,Klaus Dieter – Brauer,Christian, corr, 1976.

6.Bc3 Qf5 7.d4 Nbd7 8.Nbd2 e5 9.h3 e4 10.g4 Qe6 11.d5 Qe7 12.g5 Nh5 13.dc6 bc6 14.Nd4 e3 15.N2f3 Nc5 16.fe3 Qe3 17.Qd2 Qd2 18.Nd2 Na4 19.Rc1 Nc3 20.Rc3 Ra2 21.Nc6 h6 22.h4 Nf4 23.e3 Ra1 24.Kf2 Ne6 25.g6 fg6 26.Rb3 Be7 27.Kg3 g5 28.h5 Nc5 29.Rb8 Kf7 30.Bg2 Rh1 31.Bh1 Re8 32.Bd5 Kf8 33.Ne4 Ne4 34.Be4 Be6 35.Re8 Ke8 36.Bd5 Bd7 37.Kf3 Bf6 38.Nb8 g4 39.Kg2 Bc8 40.Nc6 g6 41.hg6 Kf8 42.Nd4 Kg7 43.Be4 h5 44.Kf2 Kh6 45.Bd3 h4 46.Be4 h3 47.Kg1 Bd7 48.Nf5 Bf5 49.Bf5 Kg5 50.Be6 Kh4 51.Bd5 g3 52.Bb7 Be5 53.Be4 g2 54.Bg2 hg2 55.Kg2 Kg5 56.Kf3 Kf5 57.Ke2 Kg6 58.Kd3 Kf5 59.c5 dc5 60.Kc4 Bd6 61.Kd5 Be7 62.e4 Kf4 63.e5 Ke3 64.Kc4 Ke4 (65.e6 Ke5-+) 0–1. ETC_Chess – Rolly, ACL–T052 playchess.de, 2003.

6.e3 e5 =+.

6.Bf6 ef6 7.e3 =.

6.Bc3 Qb6 7.d4 (better is 7.Be2=) 7...Ne4-/+ 8.Bd3 Nc3 9.Nc3 Qb2 (9...e5 10.Nd2 Qb2 11.Ne2-+) 10.Ne2= Ra2 11.Rb1 (11.Ra2 Qa2 12.0-0 e6=+) 11...Qa3 12.0-0 f6 (12...Qd6 13.Nc1 Ra3 14.e4=+) 13.Nc1 (13.c4 e6=) 13...Rb2 14.Nd2 (14.Nb3 Rb1 15.Qb1 e6=) 14...Rb1=+ 15.Nb1 Qd6 16.Qh5 Kd8 17.Bh7? (better is 17.c4=+) 17...Be6-+ 18.Qg6? (better is 18.g4-+) 18...Bg8 19.Qg3 (19.Nd3 Bh7 20.Qh5 Na6-+) 19...Qg3 (< 19...Rh7 20.Qd6 ed6 21.Nd3-+) 20.fg3 Bh7 21.Nd3 Bd3 (21...Nd7 22.Nd2-+) 22.cd3 e6 23.e4 Bb4 24.e5 (24.g4 Nd7-+) 24...f5 (better is 24...fe5!? 25.de5 Bc5 26.Kh1-+) 25.g4 g6 26.gf5 gf5 27.Rf4 Rg8 (27...c5 28.g4 Rh4 29.dc5-+) 28.h3 (28.Kf1 Ke7-+) 28...Rg3 (29.Rf3 Rf3 30.gf3 c5-+; 28...c5 29.dc5 Nc6 30.Kf1-+) 0–1. Kusmierek,Jozef – Weber,Krzysztof, corr 2. AMM Poland, 1993.

6.Bc3 Qc7 7.Be5 Qd8 8.Be2 =.

6.c4 dc4 7.Bc4 Nbd7 8.0-0 (8.Bc3 Qh5 (8...Qa4 9.Qa4 Ra4 10.d3 e6 11.Nbd2 Nd5; 8...Qc7 9.0-0 e6 10.d4 Bd6 11.Bd3 0-0; 8...Qf5 9.d4 Nd5 10.Bd3 Qh5 11.Bd2 e6) 9.d4 e6 10.Qc2 Bd6 11.Nbd2 0-0) 8...e6 (8...Nb6 9.Be2 Bf5 10.d3 e6 11.Nbd2 Nfd5) 9.d4 Nb6 (9...Be7 10.Qc2 0-0 11.Nbd2 Nb6) 10.Bd3 Qh5 (10...Be7 11.Bc3 (11.Ne5 0-0) 11...Qa4= (11...Qd5 12.Qd2=); 10...Na4 11.Bc1 Bd6) 11.Qb3+= Nbd5 12.Ba3 Ba3 13.Na3 0-0 14.Rfc1 Nb6 (14...Rd8 15.Nc4+=) 15.Nc4 Nc4 16.Rc4 Ra5 17.Rac1 Nd7 18.Qc2 e5 19.d5 e4 (19...Rd5 20.Rh4; 19...cd5 20.Rc8) 20.Be4 Nb6 21.Rc5 Rc5 22.Qc5 Nd5 23.Bd5 Qd5 24.Qd5 cd5 25.Rc7 Bg4 26.Rb7 Bf3 27.gf3 Ra8 ½–½. Woschkat,Karl_Heinz – Bierboms,Dieter, remoteschach.de, 2002.

6.c4 e6 7.Be2 Bd6 8.0-0 0-0 9.d4 Nbd7 10.Nbd2 c5 (10...b6!?=) 11.cd5+= Nd5 12.Ne4 (12.Nc4 Qc7+=) 12...Be7= 13.Qc2 Qa4 14.Qa4 Ra4 15.Nc5 Nc5 16.dc5 Bc5 17.Rfc1 Bd6 18.Ne5 Be5 19.Be5 Bd7 20.Bf3 Bc6 21.Bd1 Ra5 22.Bd4 Rfa8 23.Bb3 Nb4 24.Bc3 Na2 25.Ba5?? (better is 25.Rd1 Nc3 26.Ra5+=) 25...Nc1-/+ 26.Rc1 Ra5 27.f3 Kf8 28.Kf2 Ke7 29.e4 Kd6 30.Ke3 Ra3 31.Rc3 Ra1 32.g4 Rd1?? (better is 32...Re1 33.Kf2 Rh1-/+) 33.Bd1+- 1–0. CountFromHolland – Beate, playchess.de, 2004.

6.Be2 b5 =.

6.Be2 Nbd7 7.0-0 e6 8.d3 Be7 9.Qc1 0-0 10.c4 b5 11.cb5 cb5 (worse is 11...Qb5 12.Nd4 Qa6 13.Nc6+=) 12.Nd4 Bb7 13.Nb3 Qb6 14.Qd2 b4 15.Rd1 Rfc8 16.Qe1 Rc2 17.Rd2 Rd2 18.N1d2 Rc8 (18...e5 19.Qc1+=) 19.Rc1 (19.a3 e5=) 19...Qd8 20.Nf3 Bc6 (20...Bd6 21.Rc8 Qc8 22.Nfd4=) 21.Rc2 Ba4 22.Qc1 Rc2 23.Qc2 Bd6 24.h3 Qc7 25.Qc7 Bc7 26.Nfd2 Kf8 27.g4 Ke7 28.Kg2 e5 29.Bf3 (29.a3 ba3 30.Ba3 Bd6 31.Bd6 Kd6=) 29...Ke6 30.Be2 Bc6 31.a3 h5 ½–½. Holz Auf Der Heide,Gerhard (1850) – Juergens,Peter (2030), 3rd Halle Germany, Senior Championship, 2011.

6.Be2 Nbd7 7.0-0 e6 8.d4 Be7 (8...b5 9.Nbd2=) 9.c4 0-0 10.Nbd2 Qc7 11.Qb3 c5 12.cd5 Nd5 13.Rac1 Qb6 (13...b6 14.Rfe1=) 14.Qb6 (14.Bb5 N7f6+=) 14...N5b6= (worse 14...N7b6 15.dc5 Ra2 16.Bd4+/- (worse 16.cb6 Rb2 17.Rfd1 Nb6-/+)) 15.dc5 Bc5 16.Nb3 (better 16.Ra1!?=) 16...Ra2-/+ 17.Bg7?? (better 17.Nc5 Nc5 18.Rc5 Rb2 19.Nd4-/+) 17...Kg7-+ (17...Re2?! 18.Bf8 Bf8 19.Nbd2-/+) 18.Nc5 Nc5 19.Rc5 Re2 20.Rg5 Kf6 21.Rh5 Kg6 22.g4 h6 (22...Nd5 23.Rc1-+) 23.Ne5 Kg7 24.h4 (24.Rc1 Nd5-+) 24...Nd7 (24...f6 25.Rb1 fe5 26.Rb6 Rff2 27.g5 Rg2 28.Kh1 hg5 29.Rg5 Rg5 30.hg5 Re3 31.Rd6-+) 25.Nf3 White intends g5 (25.Nd7 Bd7 26.g5 hg5 27.Rg5 Kh6-+) 25...Nf6 26.Rh6 (26.Rc5 Ng4 27.Rc7 Kf6-+) 26...Kh6 27.g5 Kg6 28.gf6 Kf6 29.Rb1 Rg8 30.Ng5 Ke7 31.Kf1 Rc2 32.Nf3 (32.Rb5 f6 33.Nf3 e5-+) 32...Rc7 (32...e5!? 33.e4-+) 33.Ke2 Rh8 (33...f6 34.Nd2-+) 34.Rb5 (34.e4 b5!-+) 34...f6 35.Kd3 (35.Rb4 e5-+) 35...e5 36.Rb6 (36.Rb4 Bf5 37.Ke2 Ra8-+) 36...Bg4 (36...Rd8 37.Ke2 Bg4-+) 37.Nh2 (37.Ke4 f5 38.Ke5 Bf3 39.Re6 Kf7 40.Rf6 Kg7 41.Rf5 Rc5 42.Kf4 Rh4 43.Kg3 Rf5 44.Kh4 b5-+) 37...Rh4 (37...Rd8 38.Rd6 Rd6 39.Ke4 Rc4) 38.Ng4-+ Rg4 39.f3 (39.e4 Rf4 40.Rb2 Kd6-+) 39...Rg3 (better 39...Rd7!? 40.Ke2 Rg2 41.Ke1-+) 40.Ke4 Rg5 (40...Rc6 41.Rb7 Ke6 42.Kd3-+) 41.f4 ef4 42.ef4 Rgc5 43.Kf3 R5c6 44.Rb5 Kf7 45.Kg4 Rc5 46.Rb6 Rc1 0-1. zembelek (2070) - 147a (2070), Rated Blitz game, lichess.org, 2013.

6.Be2 Bf5 7.0-0 e6 8.d3 Be7 9.Nbd2 Bg6 10.Nh4 Nbd7 11.Ng6 hg6 12.c4 Qc7 13.h3 Bd6 14.Qc2 Ke7 15.a4 Rh7 16.d4 Rah8 17.Nf3 g5 (17...dc4!? 18.a5 b5+=) 18.Ng5 Rh6 19.f4 Nh5? (better 19...Bb4+/-) 20.c5 Bf4 21.ef4 (21.Rf4?! Nf4 22.ef4 Qf4+/-) 21...Nf4 22.Bg4 f6 23.Rf4! Qf4 24.Ne6 Rh4 (24...Qe3 25.Kf1 f5 26.Ng7 Qf4 27.Kg1 fg4 28.Nf5 Kd8+-) 25.Nf4 (25.Nf4 Rg4 26.Qe2 Kd8 27.Ne6 Kc8 28.Qg4+-) 1-0. PEREIRA – ArturoP, internet, 2022.

6.Bf6 ef6=+ 7.c4 (7.Be2 Bd6=+) 7...Be6 (7...dc4 8.Bc4 b5 9.Bb3=+) 8.cd5 cd5 (8...Qd5 9.Nc3 Qa5 10.Qc2=+) 9.Be2 (9.Nd4 Nc6 10.Bb5 Bd7=) 9...Be7 (9...Nc6 10.0-0=) 10.0-0 0-0 11.Nc3 (11.Qb3 b6=) 11...Nc6 (11...Rc8 12.Rb1 Bb4 13.a4=+) 12.Nb5 (12.Qb1 Bb4=) 12...Rad8 (12...Ne5 13.Nbd4=+) 13.a4 (13.d4 Rfe8=) 13...Bf5 (13...Ra8 14.d4=) 14.Nfd4 (14.Nbd4 Nd4 15.Nd4 Be4=) 14...Nd4 15.Nd4 (< 15.ed4 Rfe8-/+) 15...Bg6 16.f4 (16.Nb3 Qc7=) 16...f5 17.Bf3 (17.Nb3 Qb4=) 17...Bf6 18.Rb1 Bd4 19.ed4 Qa7 (19...Qc7=) 20.Rb5 (20.Rb4!?=) 20...Qd4=+ 21.Kh1 (21.Rf2=+) 21...f6 22.Rb7= Bf7 23.Re1 Qf4 24.Ree7 Rde8 25.Re8 Re8=+ 26.h3 d4 27.d3 g5 28.Qc1?? (better is 28.Rb1=+) 0–1. grain – BarbieGirl, Live Game Caissa's Web, 2005.

7.Bc3 Qb6 8.a4 A) 8...Qd8 9.Qb3 b6 10.Bf6 ef6 11.cd5 Qd5 12.Qd5; B) 8...Na6 9.Bf6 (9.d4 dc4 10.Nbd2 e6 11.Nc4 Qa7 12.Be2; 9.a5 Qd8 10.h3 Bf5 11.Be2 Nc5 12.0-0; 9.h3 Bh5 10.Bf6 Bf3 11.gf3 ef6 12.cd5; 9.Bd4 Qa5 10.cd5 Nd5 11.Na3 Nab4 12.Nc4) 9...Bf3 10.gf3 ef6 11.cd5 cd5 12.a5; C) 8...e6 9.a5 (9.Bf6 gf6 10.Nc3 Bb4 11.Rb1 Qa5 12.Qb3; 9.h3 Bf3 10.Qf3 Nbd7 11.a5 Qc7 12.Be2) 9...Qc7 10.Bf6 gf6 11.cd5 Ra5 12.Ra5; D) 8...Ne4 9.cd5 (9.a5 Qc7 10.cd5 cd5 11.Be5 Bf3 12.Qa4) 9...cd5 10.a5 Qc7 11.Be5 Bf3 12.Qa4; E) 8...Nbd7 9.a5 (9.h3 Bf3 10.Qf3 Qb3 11.cd5 Nd5 12.a5) 9...Qc7 10.h3 Bf5 11.g4 Bg6 12.g5.

7.Bc3 Qb6 8.d4 A) 8...Ne4 9.c5 (9.Qc2 Bf3 10.gf3 Nc3 11.Nc3 e5 12.c5; 9.Bd3 Nc3 10.Nc3 Bf3 11.gf3 e5 12.Rb1) 9...Nc3 10.Nc3 Bf3 11.gf3 Qa5 12.Qd2; B) 8...Bf3 9.gf3 dc4 10.Nd2 Qd8 11.Nc4 Nd5 12.Bd2.

7.Bc3 Qb6 8.Bf6 gf6 (8...ef6 9.cd5 Bf3 10.gf3 cd5 11.Nc3+= d4 12.Rb1) 9.cd5 (9.Nc3 dc4 (9...e6 10.cd5 ed5 11.Be2 Bd6 12.Nd4) 10.Bc4 e6+= (10...Qb4 11.Be2 Qa5 12.h3) 11.Rb1 Qc7 12.h3) 9...cd5 (9...Bf3 10.gf3 (10.Qf3? Ra2 11.Ra2 Qb1 12.Qd1 Qa2-+) 10...cd5 11.Nc3+= d4 12.Rb1) 10.Nc3+= e6 11.Rb1 Qa7 12.Qb3 Bf5 13.Bb5 Kd8 14.d3 Bg4 (14...Qa3 15.Ke2+=) 15.Nd4 (15.Nd5 ed5 16.Qd5 Nd7 17.Bd7 Bd7 18.Rb7 Qa5 19.Qa5 Ra5 20.Rb8 Ke7=) 15...Qa3 (15...Bc5 16.h3 Bh5 17.Nd5 Bd4 18.ed4 Qd4 19.Ne3+=) 16.Ba4 Qb3 17.Rb3 (17.Nb3? Bb4 18.Nc5 Bc3 19.Kf1 Na6 20.Nb7 Ke7-+; 17.Bb3?! Bc5=; worse 17.ab3 e5 18.Nc2 Be6=+) 17...Kc8 (17...e5 18.Nc2 (worse 18.Rb7 ed4 19.ed4 Kc8-/+) 18...Bc8 19.Rb5+=) 18.h3 Bh5 19.Kd2 Na6 20.Rc1 Nc5 21.Rb5 Rg8 (21...Kd8 22.Bc2 Rg8 23.g4+=) 22.g4 Bg6 (22...Kd8!? 23.gh5 Na4 24.Rb7 Nc3 25.Kc3 e5 26.Nc6 Ke8+-) 23.Nd5+- ed5 (23...Kd8 24.Nb6 Ra6=) 24.Rbc5+- Bc5 25.Rc5 Kd8 26.Bb3 Rc8 (26...b6 27.Rd5 Kc7 28.f4+-) 27.Rb5 Kc7 28.Bd5 b6 29.f4 (29.Nc6 Rg7+-) 29…f5. Van Esbroeck,Jeff – Plock,Joerg, corr TKM/A, 2000.

7.Bc3 Qd8 8.Qb3 A) 8...Bf3 9.Qb7 (9.Bf6 ef6 10.gf3 Na6 11.d4 Bb4 12.Nd2) 9...Bg2 10.Bg2 Ra6 11.Be5 Rb6 12.Qa7; B) 8...b6 9.Bf6 (9.Ne5 Be6 10.d4 dc4 11.Bc4 Bc4 12.Nc4) 9...gf6 10.cd5 Bf3 11.gf3 Qd5 12.Bc4.

7.Bc3 Qd8 8.d4 A) 8...dc4 9.Bc4 e6 10.0-0 Bd6 11.Qb3 b5 12.Be2; B) 8...b6 9.Bd3 (9.h3 Bf5 10.g4 Bb1 11.Qb1 e6 12.Nd2; 9.Nbd2 Ne4 10.Qb3 Bf3 11.Nf3 e6 12.a4; 9.cd5 Nd5 10.h3 Bf3 11.Qf3 e6 12.Bc4) 9...dc4 10.Bc4 e6 11.h3 Bf5 12.0-0; C) 8...e6 9.c5 (9.Qb3 b6 10.Ne5 Bf5 11.Bb4 Bb4 12.Qb4; 9.h3 Bf3 10.Qf3 Ne4 11.cd5 ed5 12.Qg4) 9...Nbd7 10.h3 Bf5 11.Be2 Be7 12.0-0.

7.Bc3 Qd8 8.h3 Bf5 9.Nh4 (9.d4 b6 10.g4 Bb1 11.Qb1 e6 12.Bb4; 9.g4 Bg6 10.Ne5 dc4 11.Bc4 e6 12.d3; 9.Qb3 Nbd7 10.Bf6 ef6 11.cd5 Nc5 12.Qb2; 9.Bf6 ef6 10.Qb3 Na6 11.cd5 Nc5 12.Qb2) 9...Bc8 10.d4 b6 11.Nf3 Bf5 12.g4.

7.Nc3 e6 8.cd5 cd5 9.Bb5 Nc6 10.0-0 Bd6 11.h3 Bh5 12.a4 0-0 13.d4 (13.g4 Bg6=+) 13...Ne4 14.Bc6 bc6 15.Ne2 (better 15.Qc2!? Bf3 16.gf3=+) 15...Bf3 16.gf3 Ng5 (better 16...Nd2!? 17.Bc3 Nf3 18.Kg2 Nh4 19.Kg1 Qa6-+) 17.Kg2=+ f5 18.f4 Ne4 19.f3 (19.Qd3 c5=+) 19...Nd2-/+ 20.Bc3 (better 20.Rg1!?-/+) 20...Nf1-+ 21.Kf1 Bb4 (21...Qa6 22.Kg2-+) 22.Qc2 (22.Bb4 Qb4 23.Qc2 Rfc8-+) 22...Bc3 (22...c5 23.dc5 Qc5 24.Qd2-+) 23.Nc3 (23.Qc3 Rfc8-+) 23...c5 24.Nb5 (24.Ne2 Rfc8 25.Qd3 Kf7-+) 24...c4 25.Kf2 (25.Nc3 Rfb8-+) 25...Rf6 (25...Rfb8 26.Nc3-+) 26.h4 (26.Kg2 Rb8 27.Rb1 Rf7-+) 26...Rh6 27.Kg3 Rb8 28.Rh1 Qb4 29.h5 g6 30.Kf2 (30.e4 Rb6 31.Rb1 Qf8-+) 30...Rh5 (worse 30...gh5 31.e4-+) 31.Rh5 gh5 32.Kg3 (32.Kf1 Kf7-+) 32...Qb3 33.Qg2 (33.Qc1 Qa2 34.Kh3 Qf2-+) 33...Qe3 34.Nd6 (34.Kh2 Kf7 35.Qg5 Qf2 36.Kh1 Qf3 37.Kh2 Qe2 38.Kh1 Rb6-+) 34...Qd4 (better 34...Rb1 35.Kh4 Kf8 36.a5-+) 35.Kh4 (35.Qe2 Qg1 36.Kh4 Qg6-+) 35…Kf8 (35...Kf8 36.Nb5 Qf4 37.Kh3 h4-+) 0-1. dale70 (2105) - chessbia (2140), Rated Blitz game, lichess.org, 2015.

7.cd5 Qd5 8.Nc3 A) 8...Qd8 9.h3 (9.d4 e6 10.Qb3 Bf3 11.gf3 Ra7 12.h3; 9.Qb3 Bf3 10.gf3 b6 11.Ne4 Nd5 12.Rg1) 9...Bf5 10.g4 Bg6 11.Ne5 e6 12.Qb3; B) 8...Qh5 9.Be2 (9.d4 Bf3 10.Qf3 Qf3 11.gf3 e6 12.Rg1) 9...e6 10.Qb3 Ra7 11.h3 Bd6 12.Rg1; C) 8...Qd6 9.d4 (9.Qb3 b5 10.Ng5 e6 11.f3 Bh5 12.a4; 9.Be2 e6 10.d4 Qc7 11.Qb3 Nd5 12.h3; 9.h3 Bf3 10.Qf3 Nbd7 11.Rb1 e5 12.Bc4) 9...e6 10.Be2 Be7 11.Qb3 Qb4 12.Qb4; D) 8...Qa5 9.h3 (9.Be2 e6 10.Qb3 Nbd7 11.d4 Ne4 12.a3; 9.Qb3 Bf3 10.gf3 Nbd7 11.d4 Ra7 12.Bd3) 9...Bh5 10.Qb3 Bf3 11.gf3 Nbd7 12.d4.

7.cd5 Nd5 8.Nc3 Nd7 9.Be2 e6 10.0-0 Be7 11.Nd5 Qd5 12.h3 (< 12.Bg7 Rg8 13.Bh6 Bh3-+ (13...Ra2?! 14.Ra2 Qa2 15.Bf4=)) 12...Bf3 13.Bf3 ½–½. Jose Luis – Mely, ChessWorld.net, 2006.

7.cd5 Nd5 8.Bc4 A) 8...Nd7 9.0-0 (9.Nc3 Ne5 10.Be2 Bf3 11.gf3 e6 12.f4) 9...e5 10.Nc3 Bb4 11.Nd5 cd5 12.Be2; B) 8...b5 9.Bb3 (9.Be2 f6 10.0-0 e6 11.Nd4 Be2 12.Qe2) 9...e6 10.0-0 Nd7 11.h3 Bh5 12.a4; C) 8...Qb4 9.Qc2 (9.Qb3 Qb3 10.ab3 Ra1 11.Ba1 e6 12.Ne5; 9.Bb3 Nd7 10.Nc3 Nc5 11.0-0 e6 12.Nd5; 9.Qc1 Bf3 10.gf3 e6 11.Qc2 b5 12.Bb3) 9...e6 10.a3 Qa4 11.Bb3 Qa6 12.h3; D) 8...Na6 9.Nc3 e6 10.Nd5 ed5 11.Be2 Nc5 12.Bc3; E) 8...e6 9.0-0 (9.Be2 Qb6 10.Bd4 c5 11.Bc3 Nc6 12.0-0; 9.h3 Qb4 10.Bd5 Qb2 11.Nc3 Bh5 12.Rb1) 9...Nd7 10.h3 Qb4 11.Bb3 Bh5 12.d3.

7.cd5 Nd5 8.Be2 Nd7 (8...f6 9.h3 (9.Nc3 e5 10.Qb3 Qb4 11.0-0 Qb3 12.ab3; 9.0-0 e5 10.d4 e4 11.Nfd2 Be2 12.Qe2; 9.Qb3 Qb4 10.Qc2 Bf5 11.Qc1 e5 12.0-0; 9.Qc2 e5 10.Nc3 Bc5 11.0-0 Bb4 12.Rfb1) 9...Bf5 10.Nc3 Nc3 11.Bc3 Qa4 12.d4) 9.0-0 (9.Nc3 e5 10.0-0 Nc3 11.dc3 Qa4 12.h3) 9...e6 (9...Qb4 10.Qc2= Qa4 11.Qc1 e5 12.Bd1) 10.h3 (10.Nc3 Be7 11.Nd5 Qd5 12.d3) 10...Qb6 (10...Bf3 11.Bf3 Qb5 12.Qc1= (12.Bc3=)) 11.Bd4 c5 12.hg4 cd4 13.Nd4 Bd6 (13...Qb2 14.Qb3 Qb3 15.Nb3+= (15.ab3?? Ra1 16.Nc3 Ra5-+)) 14.Nb5 (14.Nc3 Be5+=) 14...Rc8 (14...Be7 15.N1c3+=) 15.Nd6 Qd6 16.Qb3 0-0 17.d4 Qb4 (17...Rc7 18.Na3 Nc3 19.Bd3+=) 18.Bf3 (18.Qb4 Nb4 19.Na3 b6+-) 18...Qa5 (18...Qd6 19.Nd2+- (19.Qb7? Rb8 20.Qa7 Ra8 21.Qa8 Ra8-+)) 19.Qb7 Rb8?? (better 19...N7b6 20.Bd5 Nd5+-) 20.Qd7+- Rfd8 21.Qc6 Rbc8 22.Bd5 Rc6 23.Bc6 Qb6 24.Rc1 (24.Bf3 Qb2 25.Nd2 Qd2+-) 24...Rc8+- 25.Nd2 Rc6 26.a4 Rc1 27.Rc1 Qa6 28.Ne4 (28.Nb3 Kf8 29.Nc5 Qa5+-) 28...h6 29.Nc5 Qb6 30.Nd7 (30.Kf1 Qb2 31.Rd1 Kf8+-) 30...Qb7 31.Ne5 Qa7 (31...Qb4 32.g3 f6 33.Rc8 Kh7 34.Nd7 Qb1 35.Kh2+=) 32.Rc8 Kh7 33.Rc4 f6 34.Nf3 (34.Nd3 Qa6 35.Nb2 Qa5+-) 34...Qb6 35.Nd2 (35.g5 Qb1 36.Kh2 hg5=) 35...Qb2= 36.Nf1 Qb3 37.Rc6 e5 38.a5 ed4 (38...Qa4 39.d5 Qa5 40.e4=) 39.ed4 Qd5 40.Rc2 Qd4 41.Ra2 Qg4 42.a6 Qc4 43.Ra1 Qd4 44.Ra2 Qa7 45.Ng3 (45.Ne3 Kg6=) 45...g5 46.Ne4 Kg6 (46...f5 47.Nc3=) 47.Nc3=. LUPES – Rolly, playchess.de, 2002.

7.cd5 Nd5 8.e4 Nf4 9.Qb3 (9.Bc3 Qa4 10.Qa4 Ra4 11.d4 Bf3 12.gf3; 9.Nc3 Nd7 10.h3 Qh5 11.d4 e5 12.de5) 9...Nd7 10.Bc3 Qa4 11.d4 Qb3 12.ab3.

7.cd5 Nd5 8.h3 A) 8...Qb4 9.Bc3 (9.Bd4 Bf3 10.gf3 Nd7 11.Nc3 Qd6 12.Ne4) 9...Nc3 10.Nc3 Bf5 11.g4 Bc8 12.Rb1; B) 8...Bh5 9.Be2 (9.Nc3 e6 10.Be2 Ba3 11.Qb3 Bb2 12.Qb2; 9.e4 Qb4 10.ed5 Qb2 11.Nc3 Bf3 12.gf3) 9...Nd7 10.0-0 Bf3 11.Bf3 Qb5 12.Bc3; C) 8...Bf3 9.Qf3 e6 10.Qg3 Nb4 11.Kd1 Qf5 12.Na3.

7.cd5 Bf3 8.Qf3 A) 8...Nd5 9.Bc4 (9.Be2 Nd7 10.0-0 Qb4 11.Bc3 Qh4 12.e4; 9.Nc3 Qb6 10.e4 Nb4 11.Qd1 e5 12.a3) 9...Nd7 10.e4 Qb4 11.Bb3 N5f6 12.e5; B) 8...Qd5 9.Qd5 (9.Qg3 Nbd7 10.Nc3 Qa5 11.Be2 Nc5 12.Qf4; 9.Be2 Nbd7 10.d4 e6 11.Nc3 Qf3 12.Bf3; 9.Qf4 Nbd7 10.Nc3 Qa5 11.Ne4 Nd5 12.Qf3) 9...Nd5 10.Nc3 e6 11.a4 Na6 12.Nd5.

7.0-0 e6 8.d3 Nbd7 9.Nbd2 Bb4 10.Nb3 Qc7 11.Nfd4 Be2 12.Qe2 0-0 13.c4 dc4 14.dc4 Ra7 15.Nc2 Be7 16.a4 b6 17.Ra2 Rfa8 18.Rfa1 c5 19.f3 Nb8 20.e4 Nc6 21.g3 Na5 22.Na5 Ra5 23.f4 Qc6 24.e5 Nd7 25.Ne3 Ra4 26.Ra4 Ra4 27.Ra4 Qa4 28.Qd1 Qd1 29.Nd1 Nb8 30.Kf2 Nc6 31.Ke3 Kf8 32.Ke4 g6 33.Nc3 Na7 34.Na4 Bd8 35.g4 Ke8 36.f5 Kd7 37.f6 Kc6 38.h4 b5 39.cb5 Kb5 40.Nc3 Kc4 41.Ne2 Ba5 42.Bc1 Nc6 43.h5 Bc7 44.Bf4 Nd4 45.Nd4 cd4 46.hg6 hg6 47.Bd2 d3 48.Ke3 Be5 0–1. bratek55 (1660) – beginner2011 (1670), kurnik, 2012.

7.0-0 e6 8.Bf6 gf6 (8...Bf3 9.Bf3 gf6 10.Be2 Bd6 11.d4 b5 12.Nd2 b4) 9.Nd4 (9.h3 Bf3 (9...Bh5 10.d4 Bd6 11.Nbd2 b5 12.e4 b4) 10.Bf3 Bd6 11.d4 Nd7 12.c4 dc4) 9...Be2 10.Qe2 Bd6 11.f4 Nd7 12.c4 (12.Qh5 Ba3 13.Ne6 Bb2=) 12...dc4 13.Qc4 Qa6 14.Qc2 Nc5 15.Nc3 f5 16.Rab1 Rg8 17.Nf3 Qc4 18.Rb2 b5 (18...Na4 19.Na4 Qc2 20.Rc2 Ra4 21.Rb1=) 19.d4 Na4 20.Na4 Ra4 21.Qf2 Ra3 (21...Qd5 22.Rfb1=) 22.Rc2 (22.Ne5 Qc3+=) 22...Qd5= 23.Ne5 Be5 24.fe5 ½–½. Bezgodov – Gleizerov, Cheliabinsk, 1990. (=1.Nf3 Nf6 2.b4 c6 3.Bb2 a5 4.ba5 Qa5 5.e3 d5 6.Be2 Bg4)

8.c4 dc4 9.Bc4 Qb4 10.Bb3 e5 11.Bc3 Qd6 12.h3 Bf3 13.Qf3 e4 14.Qe2 Ne5 15.Be5 Qe5 16.Nc3 Bd6 17.g3 Qf5 18.Qc4 0-0 19.Ne2?? Qh3-+ 20.f4 Ng4 21.Rf2 Nf2 22.Kf2 Qh2 23.Kf1 Qh1 24.Ng1 Rad8 25.Qe2 Rd7 26.d4 ed3 27.Qd3 Rfd8 28.Qf5 Bc5! 29.Re1 Rd2 30.Qf7 Kh8 (31.Re2 Be3 32.Qg8 Rg8 33.Rd2 Qg1 34.Ke2 Qf2 35.Kd3 Rd8 36.Bd5 Rd5 37.Kc4 b5 38.Kb3 Qd2 39.a4 Rd3) 0–1. CountFromHolland – ddddale, HCL–E816 playchess.de, 2003.

8.c4 e6 9.cd5= ed5 10.d3 (10.Nd4 Be2 11.Qe2 c5=) 10...Bd6=+ 11.Nbd2 0-0 12.Nd4 Be2 13.Qe2 Qc7 14.h3 Ne5 15.Nf5 Bb4 (15...Rfe8 16.Nf3=) 16.Nf3 Ng6? (16...Ned7 17.Rfb1 Ba3 18.Qc2=) 17.N3d4 (17.Ng7 Kg7 18.Bf6 Kf6 19.Qb2 Ne5 20.Ne5 Ba3 21.Ng4 Ke7 22.Qf6 Ke8+-) 17...Rfe8? (better 17...Qd7!? 18.Qf3 Ba3=) 18.Ng7!+/- Kg7 19.Nf5 Kg8 20.Bf6 Re6 21.Qb2 Bf8 22.f4 (22.a4 Ne5 23.Be5 Re5+/-) 22...Rae8 23.Bg7 d4 (23...Ne7 24.Be5 Qd7 25.Ng3+/-) 24.Qd4 (better 24.Bd4 c5 25.Rac1+-) 24...Rd8?? (better 24...Nh4 25.Be5 Nf5 26.Bc7 Nd4 27.ed4 Bg7+/-) 25.Nh6 1-0. Twista (2010) - toughbreak (2115), Rated Blitz game, lichess.org, 2015.

8.d3 Qb4 A) 9.Bf6 Nf6 10.Nbd2 Qc3 11.a4 e6 12.Rb1 Ra7 13.Nd4; B) 9.Bd4 B1) 9...Qd6 10.Bf6 (10.Bb2 e5 11.Nbd2 Qe6 12.c4 Bd6 13.cd5; 10.Nbd2 e5 11.Bb2 Qe6 12.c4 Bd6 13.cd5; 10.c4 e5 11.Bc3 dc4 12.dc4 Qd1 13.Rd1; 10.h3 Bf3 11.Bf3 e5 12.Bb2 Be7 13.c4) 10...Qf6 11.Nbd2 e6 12.c4 Bd6 13.d4; B2) 9...Bf3 10.Bf3 (10.a3 Qb5 11.Bf3 e5 12.Bc3 Qa4 13.Bb2) 10...e5 11.a3 Qd6 12.Bb2 Be7 13.c4; C) 9.Bc3 Qd6 10.a3 (10.Nd4 Be2 11.Ne2 e5 12.Ng3 Qe6 13.f4; 10.Nh4 Be2 11.Qe2 e6 12.f4 b5 13.Nf3; 10.Nbd2 e5 11.h3 Bf5 12.a4 b6 13.Re1; 10.h3 Bf3 11.Bf3 e5 12.a4 Be7 13.a5) 10...e5 11.Re1 Be7 12.Bb4 c5 13.Bc3.

8.d3 Qb5 A) 9.Bf6 Nf6 10.Nbd2 Qa4 11.d4 e6 12.Rb1 b5 13.Ne5; B) 9.Qc1 B1) 9...Qb4 10.h3 (10.c4 e5 11.cd5 cd5 12.h3 Bf3 13.Bf3; 10.Re1 Qd6 11.c4 e5 12.cd5 Qd5 13.Nc3; 10.a3 Qd6 11.c4 dc4 12.dc4 e5 13.Rd1; 10.c3 Qd6 11.c4 e5 12.Nc3 Be7 13.cd5) 10...Bf3 11.Bf3 e5 12.c4 Bd6 13.Bc3; B2) 9...Qa4 10.c4 (10.Re1 e6 11.c4 Bd6 12.Bf6 Nf6 13.c5; 10.Bd1 e6 11.c4 Qa6 12.cd5 cd5 13.Qd2; 10.h3 Bf3 11.Bf3 e5 12.c4 dc4 13.dc4) 10...dc4 11.Bd1 Qb4 12.dc4 e6 13.Ne5; B3) 9...e5 10.Ne5 Ne5 11.Be5 Be2 12.Nc3 Ba3 13.Nb5; C) 9.Bc3 C1) 9...Qa4 10.Ne5 (10.Bf6 Nf6 11.Ne5 Be2 12.Qe2 e6 13.c4; 10.Nbd2 e6 11.h3 Bf3 12.Nf3 Bd6 13.Bb2; 10.Bb2 Bf3 11.Bf3 e5 12.Be2 Bd6 13.c4) 10...Ne5 11.Be5 Be2 12.Qe2 Qg4 13.f3; C2) 9...e6 10.a4 (10.Ne5 Be2 11.Qe2 b6 12.Nd7 Nd7 13.Bd4) 10...Qa6 11.e4 Bf3 12.Bf3 de4 13.Be4; C3) 9...Bf3 10.Bf3 Qa4 11.Bf6 Nf6 12.e4 e6 13.ed5.

8.d3 Qb6 A) 9.Bd4 Qc7 10.Bf6 (10.Bb2 e5 11.Nbd2 Bd6 12.h3 Bf3 13.Bf3; 10.h3 Bf3 11.Bf3 e5 12.Bb2 Bd6 13.Nd2; 10.Bc3 e5 11.h3 Bf3 12.Bf3 Bd6 13.a4; 10.c4 e5 11.Bb2 dc4 12.dc4 Bd6 13.h3) 10...Nf6 11.Nbd2 e6 12.c4 Ba3 13.Qc2; B) 9.Bf6 B1) 9...Bf3 10.Bc3 (10.Bf3 Nf6 11.c4 d4 12.Qe2 e6 13.Nd2) 10...Be2 11.Qe2 e5 12.a4 Bb4 13.Qd2; B2) 9...Nf6 10.Nbd2 e6 11.c4 Bb4 12.d4 Bc3 13.Rb1; C) 9.Ba3 Bf3 10.Bf3 e5 11.Bf8 Nf8 12.Nd2 Ne6 13.c4; D) 9.Bc3 Qc7 (9...Bf3 10.Bf3 e5 11.Bg4 Qc7 12.Bf5 Bd6 13.Nd2) 10.h3 (10.a4 e5 11.Nbd2 Bd6 12.h3 Bf5 13.a5; 10.Nd4 Be2 11.Qe2 b5 12.Bb2 e5 13.Nf5; 10.Bf6 Nf6 11.Nbd2 e5 12.d4 ed4 13.ed4; 10.Nbd2 e5 11.a4 Bd6 12.h3 Bf5 13.a5) 10...Bf3 11.Bf3 e5 12.Qd2 Be7 13.a4.

8.d3 Qc7 A) 9.c4 A1) 9...e5 10.h3 (10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Bd6 13.Qc2; 10.Nbd2 Bd6 11.h3 Bf5 12.Qc2 0-0 13.e4) 10...Bf3 11.Bf3 dc4 12.dc4 Bd6 13.Qc2; A2) 9...dc4 10.dc4 e5 11.Nc3 Bd6 12.Qc2 0-0 13.h3; B) 9.h3 Bf3 10.Bf3 e5 11.c4 dc4 12.dc4 e4 13.Bg4; C) 9.Nfd2 Be2 10.Qe2 e6 11.Nf3 Bd6 12.Nbd2 e5 13.e4; D) 9.Ng5 Be2 10.Qe2 e5 11.c4 dc4 12.dc4 h6 13.Nh3; E) 9.Nbd2 e5 10.c4 (10.h3 Bf3 11.Nf3 Ba3 12.Ba3 Ra3 13.Qc1) 10...Bd6 11.h3 Bf3 12.Bf3 0-0 13.Qe2.

8.d3 e6 9.Nbd2 Ba3 10.Ba3 Qa3 11.c4 (11.d4 b5=+) 11...0-0 (11...Bf3 12.Nf3 dc4 13.dc4=+) 12.Qc2 (12.d4 Bf5=+) 12...Ra7 (12...h6 13.h3 Bf5 14.Rfb1=) 13.h3 Bf3 (13...Bh5 14.Rfb1=+) 14.Bf3= Rfa8 (14...Ne5 15.Be2=) 15.Rfb1 (15.d4 Qa4 16.Qc3 Rc8=) 15...Ne5 (15...Qa4 16.Qc3=) 16.Be2 Qe7 (16...Ng6 17.c5=) 17.d4 Ng6 18.Bf1 (18.a4 e5 19.Nf3 Ra5=) 18...e5 19.Nf3 e4 (19...Rd8 20.a4=) 20.Nd2 Nh4 (20...dc4 21.Nc4 b5 22.Nb6=) 21.cd5 cd5 22.Rb5 g5 (22...Qd6 23.Rc5=) 23.g3 (23.Rc5 Qd6+=) 23...Nf5= 24.a4 (24.Rc5 Nd6=) 24...Nd6 25.Rb2 (25.Rc5 Qd7=) 25...Rc8 (25...Kg7 26.Nb1=+) 26.Qb3 Rc6 (26...Kg7 27.Rc2=+) 27.Rc2= Rc2 28.Qc2 b5 (28...Ra8 29.a5=) 29.a5 Nc4 30.Nb3 Kg7 (30...Qd6 31.Qa2=) 31.Nc5 (31.a6 Nd7=) 31...Nd7 32.Nd7 Qd7 (worse 32...Rd7 33.Qb3 b4 34.Bc4 dc4 35.Qc4+-) 33.Qb3 (33.Qc3 Ra6=) 33...Ra6 (33...h5 34.Qb4=) 34.Qb4 h5 35.Ra2 (35.Qc5 h4 36.g4 A) 36...Na5 37.Bb5 Nb3 A1) 38.Bd7?? Ra1 (38...Nc5?! 39.Ra6 Na6 40.Kg2=) 39.Kg2 Nc5 40.dc5 Rc1-+; A2) 38.Ra6 Nc5 39.Bd7 Na6 40.Kg2=; B) 36...f6=) 35...Qc6 (35...h4!? 36.g4 Qb7=) 36.Qe7+= Kg6 37.Qd8 (37.Be2!?+=) 37...Ra8= 38.Qe7 Ra6 (worse 38...Na5 39.f4 ef3 40.Bd3 Kg7 41.Qg5 Kf8 42.Qh5+-) 39.Qd8 (39.Be2 Qc8+= (39...Na5? 40.Qf8+-)) 39...b4 (39...Ra8 40.Qe7=) 40.Qb8 (40.Qg8 Kf6+=) 40…h4 ½–½. Popper,Tomas (2015) – Cerveny,Martin (2375), 28. Czech Open E, 2017.

8.d3 e6 9.Nbd2 Bb4 10.c4 (10.h3 Bf3 11.Nf3 Bc3 12.Rb1 b6 13.Bc3; 10.e4 Bf3 11.Nf3 Bc3 12.Bc3 Qc3 13.ed5; 10.Nb3 Qc7 11.h3 Bf3 12.Bf3 0-0 13.Qe2; 10.Nd4 Be2 11.Qe2 0-0 12.c3 Bd6 13.c4) 10...0-0 11.a3 Bd6 12.Nd4 Be2 13.Qe2.

8.d3 e6 9.Nbd2 Bd6 10.Nb3 Qc7 11.h3 Bf3 12.Bf3 0-0 13.a4.

8.d3 e6 9.Nbd2 Bd6 10.c4 0-0 11.Nd4 Qb4 12.Rb1 Be2 13.Ne2.

8.d3 e6 9.Nbd2 Bd6 10.Nd4 Be2 11.Qe2 Qc7 12.N2f3 0-0 13.c4.

8.d3 e6 9.Nbd2 Bd6 10.e4 Bf3 (10...e5 11.d4 Bf3 12.Bf3= 0-0 13.c4) 11.Bf3 (11.Nf3 e5= (11...Qc7 12.c4 0-0 13.Qc2) 12.ed5 cd5 13.c4) 11...0-0=+ 12.Re1 (12.c4 de4 13.Ne4) 12...Qc7 13.g3 (13.h3=+ –0.37) 13...Rfd8 14.Qe2 de4 (14...e5 15.ed5 cd5 16.c4=+) 15.Ne4= Ne4 16.Qe4 Ra6 17.a4 Rda8 18.Bc3 Nb6 19.a5 Nd5 20.Bd2 Qe7 21.Rab1 Nf6 22.Qc4 R6a7 23.d4 Qd7 24.Rb3 Nd5 25.Reb1 Rb8 26.Bg2 h6 27.h3 Ne7 28.Qc3 Rd8 29.Be4 Nf5 30.Qb2 Bc7 (30...Be7 31.Bf5 ef5 32.Bf4+=) 31.Rb7 ½–½. Rosner,Dirk – Hind,Alan, corr 3GMMsemi–05, 1998.

8.d3 e6 9.Nbd2 Bd6 10.h3 Bf3 11.Nf3 0-0 12.c4 b5 13.Qc2.

8.d3 e6 9.Ne5 A) 9...Be2 10.Qe2 Ne5 11.Be5 Nd7 12.Bc3 Qc7 13.a4; B) 9...Qb4 10.Bc3 Be2 11.Qe2 Qh4 12.Nf3 Qg4 13.h3; C) 9...Qb6 10.Bd4 (10.Bc3 Be2 11.Qe2 Qc7 12.Nd7 Nd7 13.a4) 10...c5 11.Bc3 Ne5 12.Be5 Nd7 13.Bg4; D) 9...Ne5 10.Be5 Be2 11.Qe2 Nd7 12.Bc3 Qc7 13.a4.

8.d4 e6=+ 9.Nbd2 Bd6 (9...Qb4 10.Qc1=) 10.c4 0-0 11.Qb3 (11.c5 Bc7=) 11...Bf3 (11...Ne4!? 12.Bd1 Nd2 13.Nd2 Nf6 14.Bg4 Ng4=+) 12.Nf3= Rfb8 13.Bc3 Qa4 14.c5 Bc7 15.Rfb1 Ne4 16.Be1 e5 17.Qd3 (17.Qa4 Ra4 18.Rb4 Rb4 19.Bb4 b6 20.cb6 Bb6=) 17...ed4 (17...Nec5!? 18.Qf5 ed4 19.Nd4 g6-/+) 18.ed4= b6 19.Rb4 Qa7 20.cb6 Rb6 21.Rb6 Bb6 22.Ne5?? (22.Bb4 Re8=) 22...Bd4?? (better 22...Ne5 23.de5 Bf2 24.Bf2 Qf2 25.Kh1 Qb6-+) 23.Nc6= Bf2 24.Bf2?? (better 24.Kf1 Ne5 25.Qd5 (25.Ne5?? Be1 26.Ng4 h5-+) 25...Nc6 26.Qe4 (26.Qc6?? Be1 27.Qa8 Qa8-+) 26...Be1 27.Re1=) 24...Qf2-+ (24...Nf2?! 25.Na7 Nd3 26.Nc6-/+) 25.Kh1 Qc5 26.Qd5 (26.Ne7 Kf8 27.Ng6 fg6 28.Qb1-+) 26...Nf2 (26...Qd5?! 27.Ne7 Kf8 28.Nd5=) 27.Kg1 Nh3 (27...Qd5?! 28.Ne7 Kf8 29.Nd5=) 28.Kh1 Qg1!! (28...Qd5?! 29.Ne7 Kf8 30.Nd5 Nf2 31.Kg1=) 29.Rg1 (29.Rg1 Nf2 Mate attack) 29…Nf2 0-1. dale70 (2075) - Pikozrout (2205), Rated Blitz game, lichess.org, 2014.

8.Nd4 Be2=+ 9.Qe2 e5 10.Nb3 Qb4 11.f4 Bd6 12.a4 Qe4 (< 12...Ra4 13.Ba3 Ra3 14.Na3+=) 13.d3 Qg6 14.fe5 Ne5 15.h3 (15.a5 0-0=+) 15...0-0 16.Nd4 Rfe8 17.Nf5 Bc7 18.Qe1 b6 19.Nd2 Ned7 20.Qh4 Be5 21.Be5 Re5 (< 21...Ne5 22.Qb4+=) 22.Qf4 Kh8 ½–½. Preuss – Hirtreiter, corr, 1990.

8.Re1 Bf3 9.Bf3 e5 =.

8.Ne5 Be2 9.Qe2 Qb4 10.Bc3 Qa4 11.Nd7 Nd7 12.f4 (better is 12.d3!?=) 12...Qc2-/+ (13.Bd4 c5-/+) -/+ . strongplayer26 (2455) – Mely (2715), ChessWorld.net, 2003.

6.Bc3 Qc7 7.d4 =.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 Bf5 9.d4 =.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 Bg4 9.Be2 Be7 10.0-0 0-0 11.Nc3 Re8 12.d4 Ra3 13.Qc2 Qa5 14.Nb1 Ra4 15.h3 Bf5 16.e4 Be6 17.Nfd2 Qa7 18.Nc3 Ra3 19.Rfd1 Na6 (< 19...Qd4 20.Ndb1 Rc3 21.Nc3+/– (21.Rd4?? Rc2 22.Nd2 f5-+)) 20.Qc1 (20.Qb2 Nc7=) 20...Nc7 21.d5 (21.Rb1 Ra8=) 21...Bd7 (21...Bc8 22.Ndb1 Ra5 23.Qf4=) 22.Rb1 Ra8 a2 seems the pivot of the position 23.dc6 (23.Nf3 Qa5 24.Rb3 Rb3 25.ab3 Qb4=) 23...bc6 24.Rb3 (24.Nb3 Be6=) 24...f5 25.Ra3 Qa3 26.Qa3 Ra3 27.e5 Rc3 (27...d5 28.cd5 Nd5 29.Nd5 cd5 30.Nb1 Ra2 31.Nc3=) 28.ed6 Bd6 ½–½. Kuni,Richard (1700) – Rushton,Darren (1730), TT–02, 2002.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 g6 9.d4 Bg7 10.Bd3 f5 11.0-0 0-0 12.Nc3 Be6 13.Qb3 b5 (13...f4 14.Rab1 fe3 15.fe3=) 14.a4 (14.Ng5 bc4 15.Ne6 fe6 (15...cb3? 16.Nc7 Ra7 17.N7d5+-) 16.Bc4 d5=) 14...bc4 (14...ba4 15.Ra4 Ra4 16.Qa4=) 15.Bc4 Bc4 (15...Re8 16.Rfb1+=) 16.Qc4+/– Qe7 (16...Rc8 17.Rfb1+/–) 17.Rfb1 ½–½. woschkat (2395) – epiglotis (2550), net–chess.com, 2003.

6.Bc3 Qh5 7.d4 (7.Bf6 ef6 8.Nc3 Qg6=) 7...e6 (7...b5 8.Nbd2=) 8.a4 (8.Be2 b5=) 8...Be7 9.Be2 (9.Nbd2 0-0=) 9...b6 10.Nfd2 (10.Bb4 0-0=) 10...Qh6 (10...Qg5 11.Nf3 Qd5 12.Nbd2=) 11.0-0 (11.Nc4 Nbd7=) 11...0-0 12.a5 ba5 13.Ba5 (13.Ra5 Ba6=) 13...Bb7 (13...c5 14.Bc3 Ra1 15.Ba1 cd4 16.ed4=+) 14.Nc3 (14.Nc4 Nbd7=+) 14...Nbd7 15.Qb1 (15.Bd3 Ra7=+) 15…Rfb8 (16.Bc7 Ra1 17.Qa1 Rc8=+). cnita (2110) – pierred (2405), net–chess.com, 2006.

6.Bc4 e5 7.0-0 Be7 8.Re1 0-0 9.Qe2? (9.e4 Bg4=+) 9...b5 (better 9...e4!? 10.Nd4 d5-+) 10.Bb3-/+ Nbd7 (10...e4 11.Nd4-/+) 11.Nc3 (11.a4 A) worse 11...ba4 12.Ra4 (worse 12.Ba4 Qb6 13.Bb3 Ra1 14.Ba1 Nc5-/+) 12...Qa4 13.Ba4 Ra4 14.Nc3+=; B) 11...b4=+) 11...Nc5 12.h3 (12.d4 A) 12...Nb3? 13.ab3 (worse 13.cb3 b4 14.Na4 e4-/+) 13...e4 14.Ra5 ef3 15.Qb5 cb5 16.Ra8+-; B) 12...Ncd7=+) 12...Qc7 (12...Nb3?? 13.ab3 b4 14.Ra5 Ra5 15.Na4+-) 13.d4 ed4 14.Nd4 Re8 15.g4 (15.Qf3 Bd7=+) 15...Na4 (better 15...d5-/+) 16.Bc1?? (better 16.Ba4 ba4 17.Qc4=+) 16...Nc3-+ 17.Qd3 Ncd5 (better 17...Nce4!? 18.c4 bc4 19.Qc4-+) 18.e4 Nb6 19.Bb2 (19.Qc3 Na4 20.Ba4 Ra4 21.Qc6 Qc6 22.Nc6 Re4 (22...Ne4?! 23.Ne7 Re7 24.f3-+) 23.Re4 Ne4 24.Ne7 Re7-+) 19...Nc4! 20.Bc4 bc4 21.Qc4 d5 (21...Bd7!? 22.Qc3-+) 22.Qc6 Qc6 (better 22...Qb8 23.Qb5 Bd7 24.Qb8 Rab8-+) 23.Nc6-/+ de4 24.Bf6?? (better 24.g5 Nd5 25.Re4-+) 24...Bf6-+ (24...gf6?! 25.Re4 Be6 26.a4-/+) 25.Rab1 Bd7 (25...h5!? 26.Nb4 hg4 27.hg4 Bg4 28.Nd5 Ra2 29.Nf6 gf6 30.Rec1-+) 26.Nb4 Ra4 27.Nd5 (27.Rb3 Kf8 28.a3 Be6-+) 27...Ra2 28.Nf6 gf6 29.Rec1 Rc8 0–1. alessandrocarvalhaes (1880) – Ochnee (1985), lichess.org, 2020.

7.0-0 b5 8.d3 (8.c4 e4 9.Ne1 bc4=) 8...Be7 9.Nbd2 0-0 10.c4 Be6 (10...Bg4 11.cb5 Qb5 12.Qc2=) 11.Nb3 (11.d4 e4 12.Ng5 d5=) 11...Qa4 (11...Qb4 12.Ng5=) 12.cb5 cb5 13.Ng5 Bd7 14.Bf3 Bc6 15.Qd2 Nd5 16.Ne4 (16.Bd5 Bd5 17.e4 Bb7=) 16...f5=+ 17.Ng3 f4 18.Nf5 (18.Ne4 b4=+) 18...Rf5= 19.e4 Ne3 (19...Nb4 20.ef5 Bf3 21.gf3=) 20.fe3= fe3 21.Qe3 Bg5 22.Qb6 Rf8 (22...Rf7 23.Bg4 Qa6 24.Qa6 Rf1 25.Rf1 Na6 26.Na5+-) 23.Bg4+= Bf6 24.Be6 Kh8 25.Rf2 (25.Bc3 Re8 26.Bf5 Bg5=) 25...Qa7 26.Qa7 Ra7 ½–½. Zimmermann,Joerg (1700) – Rushton,Darren (1730), TT–02.35 TSC, 2002.

7.0-0 e4 8.Nd4 Qg5 9.f4 Qg6 10.Kh1 h5 11.Nc3 Nbd7 12.d3 Ng4 (better is 12...Nc5=) 13.Bg4?? (better is 13.Qd2+/–) 13...hg4-/+ 14.Ne4 Qh6 15.h3 Nf6 16.Nf6 Qf6 17.e4 Qh4 (17...gh3 18.g3-/+) 18.Qe1+= gh3 19.g3 (19.Qh4!? Rh4 20.f5=) 19...Qd8 20.Qe2 h2 21.Rf2 1–0. Law,Stephen (1870) – Konieczny,Franz, IECG, 2004.

7.Nc3 Be7 =+.

8.c4 0-0 9.Bc3 Qc7 10.d4 e4 11.Ne1 (11.Nfd2 Be6=) 11...d5 (11...b6 12.f3=+) 12.c5= Bf5 (12...b6 13.cb6 Qb6 14.a4=) 13.a4 Re8 (13...Ra7 14.Nd2=) 14.a5 (14.Nd2 Ra7=) 14...Na6 15.Nd2 Qd7 16.Nb3 (16.Rb1 Bg4=) 16...Bd8 (16...Bg4 17.Rb1=) 17.Nd2 (17.Rb1 Bc7=) 17...Bc7 18.Nc2 Ra7 (18...Bb8 19.Rb1=) 19.Re1 (19.Rb1 Bg4=+) 19...Ng4 (19...Bg4 20.Rb1=+) 20.Nf1= Qe6 (20...Rea8 21.Rb1=) 21.Ng3 Qg6 22.Bg4 (22.Rb1 Bg3 23.fg3 Nf6=) 22...Bg4=+ 23.Qd2 h5 (23...Bg3 24.fg3 Rea8 25.Rf1=+) 24.Reb1 (24.Ne2 h4=+) 24...h4-/+ 25.Nf1 (25.Ne2 Bf3 26.Ne1 h3-/+) 25...Bh3 (25...Rea8 26.Rb2-/+) 26.Ne1 Bg2 27.Ng2=+ h3 28.Ng3 hg2 29.Kg2 f5 30.Qe2 f4 31.Qh5 Qh5 32.Nh5 Rf8 33.Rb3 fe3 34.fe3 Rf3 35.Be1 =. Busch – Bendig,Frank, corr SOK–88–27, 1988.

8.c4 0-0 9.Nc3 e4 10.Nd4 Qg5 =.

8.c4 0-0 9.Nc3 Bf5 10.d3 Nfd7 (10...b5 11.cb5 cb5 12.a3=) 11.Nd2 Be6 (11...Qa7 12.Nb3=) 12.Nb3 Qb6 13.d4 Na6 (13...Nf6 14.a4=) 14.a4 Qc7 15.d5 Bf5 16.f4 f6 (16...Qb6 17.Bc1 ef4 18.a5=) 17.fe5 (17.e4 Bg6=) 17...fe5 18.dc6 bc6 19.Nd5! Qd8 (19...cd5 20.Qd5) 20.Na5! (20.Ne7?! Qe7 21.Ba3 Qg5 22.Bd6 Be4=) 20...cd5 (20...Qa5 Theme: Deflection from e7 21.Ne7 A double attack) 21.Nc6 Qe8 22.Qd5 (22.Rf5 dc4 23.Qd5 Kh8 24.Rf8 Bf8+=) 22...Kh8 23.Ne7 Qe7 24.Rf5! Nf6 (24...Rf5 Deflection from a8 25.Qa8 Theme: Double Attack) 25.Qd1 Rab8 (25...Nc5 26.a5+/–) 26.Ba3 Rfd8 (26...Nc5 27.a5+/–) 27.Qe1 (27.a5 Qe6 28.Qc2 Rbc8+/–) ½–½. Woschkat,Karl_Heinz – Bicker,Friedrich_Wilhelm, Schweizer, 2001.

8.c4 0-0 9.d4 e4 10.Nfd2 d5 (10...Qg5 11.Kh1=+) 11.Qb3 Nbd7 (11...dc4 12.Nc4 Qg5 13.Rd1=+) 12.Nc3 Rb8 (12...Re8 13.Rfc1=) 13.f3 ef3 14.Bf3 (worse 14.gf3 dc4 15.Nc4 Qh5=+) 14...dc4 15.Nc4 Qb4 (15...Qg5 16.e4+=) 16.Qb4 Bb4 17.a3 Be7 18.e4 Rd8 19.e5 Ne8 20.Ne4 (20.Bh5 g6 21.Bf3 Nf8+=) 20...Nf8= 21.a4 Be6 22.Nb6 Nc7 23.h3 h6 24.g4 (24.a5 Nd7=) 24...Ng6 25.Bg2 (25.Be2 Nd5 26.Nd5 Bd5=) 25...Nh4 26.Bh1 Nd5 27.Nd5 Bd5 28.Ng3 (28.a5 Rd7=) 28...Bh1 (28...c5 29.Ne4 cd4 30.Rfd1=+) 29.Kh1= (worse 29.Nh1 c5-/+) 29...c5 30.Rad1 (30.Rfd1 cd4 31.Bd4 Ra8=) 30...cd4 31.Rd4 Bc5 32.Rc4 b6 33.Ne4 Rd3 34.Nc5 Rh3 35.Kg1 bc5 36.Rf2 (36.Bc3!? Rb3 37.Rc1-/+) 36...Rbb3-+ 37.Kf1?? (better 37.Rc5 Nf3 38.Kg2 Ne1 39.Kg1-+) 37...Rh1 38.Ke2 Rb2 39.Ke3 Re1 40.Kd3 Rf2 41.Rc5 Ra2 42.a5 (42.Ra5 Nf3 43.Ra8 Kh7-+) 42...Nf3 43.e6 Re6 (better 43...fe6 44.Rc8 Kh7 45.Rc2 Ra3 46.Kc4 Re4 47.Kc5 Ra5 48.Kb6-+) 44.Kc3 Ra6 (44...Re3 45.Kb4 Rb2 46.Kc4 Rc2 47.Kb4 Re4 48.Kb5 Nd4 49.Kb4 Ne6 50.Kb3 Rc5 51.a6 Rec4 52.g5 Nd4 53.Ka3 Rc3 54.Ka4 Nc2 55.gh6 Ra3) 45.Kb4 Nd4 46.Rd5 Nc6 47.Kb3 R2a5 48.Rd6 (48.Rd6 Rc5 49.Kb2 Rb6 50.Ka3 Ra5). zembelek (2095) - Andini (2175), Rated Blitz game, lichess.org, 2014.

8.c4 e4 9.Nd4 Qg5 10.Re1 (10.f3 Bh3 (10...d5 11.Nc3 0-0 12.cd5 cd5 13.Qc2 Qg6; 10...c5 11.Nb5 Bh3 12.Rf2 0-0 13.N1c3 Bf5; 10...ef3 11.Rf3 0-0 12.Qf1 d5 13.Nf5 Bf5) 11.Rf2 Nbd7= 12.Nc3 Nc5 13.Qc2 Qg6) 10...0-0 (10...d5 11.d3+= Bh3 12.Bf1 Bg4 13.Qc2 c5; 10...c5 11.Nb5 Bh3 12.Bf1 0-0 13.d3 Bg4; 10...Bh3 11.Bf1 Nbd7 12.d3 ed3 13.Nf3 Qg4) 11.Nc3 (11.d3 Bh3 12.Bf1 c5= 13.Nb5 Bg4) 11...c5 (11...Bh3 12.Bf1+= c5 13.Nde2 Bd7) 12.Ndb5= Bh3 13.g3 Nc6 14.Nc7 Rab8 (14...Ra5 15.d3 ed3 16.Qd3=) 15.Qb1 (15.d3 Bf5=) 15...Qg6 16.N7d5 Nd5 17.Nd5 Bg5 18.Nf4 (18.d3!? Bf5 19.Rd1=) 18...Bf4+= 19.ef4 Rfe8 20.f3 Bf5 21.Qd1 Nb4 22.fe4 Be4 23.Bh5 Qh6 24.Bc3 Nd3 25.Re3 Re6 26.Bg4 Nf2+= 27.Qe2 Ng4 28.Qg4 f5 29.Qe2 Rbe8 30.Re1 d5 31.d4 cd4 32.Bd4 Rd8 33.cd5 Rd5 34.Qb2 Red6+= 35.Qb3 Qh3 36.R3e2= Qh5 37.a4 Qf7 38.Be5 Rd8 39.Kf2 Bd3 40.Re3 Bc4 41.Qc3 Rd2 42.Kg1 Qd5 43.Rf3 Rd1 44.Rfe3? Qc5-+ 45.Kg2 Qc6 46.Kf2 R8d2 47.R3e2 Re1 48.Qd2 Re2 (48...Re2 49.Qe2 Be2 50.Ke2 Qc2 51.Kf3 Qh2-+; 48...Be2?! 49.Ke1 (49.Qe1? Qf3 50.Kg1 Bd3-+) 49...Bg4 50.Qd8 Kf7 51.Qc7 Qc7 52.Bc7=) 0–1. Bonetti,Shane – Tinker (2500), ICC, 2002.

8.d3 0-0 9.c4 e4 (9...Qb4 10.Qb3 Qb3 11.ab3 Ra1 12.Ba1=) 10.Nd4 Nbd7 11.Nd2 ed3 (11...Qb4 12.Qc2=) 12.Bd3 Ne5 13.N2b3 Qc7 14.Qe2 Re8 15.Rfd1 d5 16.cd5= Nd5 17.Nf5 Bf6 18.Nbd4 g6 19.Ng3 Bg4 20.Nf3? Nf4!-+ (21.Qc2 Nfd3 (21...Ned3?! 22.Bf6 Bf3 23.gf3=+) 22.Rd3 Bf3 23.gf3 Nd3 24.Bf6 Qd6-+) 0–1. Koerner,Helmut – Hafner,Christian, Berliner Sommer, 1994.

8.d4 e4 9.Bc3 Qd5 =+.

6.c4 Be7 7.Bc3 Qd8 8.d4 d5 9.c5 0-0 10.Bd3 b6 11.cb6 Qb6 12.0-0 Ba6 13.a4 Ne4 14.Qc2 Bd3 15.Qd3 Qa6 16.Qa6 Na6 17.Rc1 c5 18.Kf1 Bf6 19.a5 Rab8 20.Ke2 Rfc8 21.Nbd2 Nc3 22.Rc3 c4 23.Ne5 Rb2 24.Nd7 Be7 25.Kd1 Bb4 (25...Rb5 26.Nb6 Rd8 27.Rcc1+=) 26.Rc2= Rc2 27.Kc2 f6 28.Nb6 Rd8 29.Nf3 Kf7 30.h4 ½–½. charmedones (1970) – soidog (1915), gameknot.com, 2014.

6.Be2 Be7 7.0-0 0-0 8.c4 d5 9.Qc2 Nbd7 10.Re1 Qa4 11.Qa4 Ra4 12.Nc3 Ra8 13.d4 Re8 14.a3 h6 15.Rac1 (15.c5!?=) 15…Nh7. Bigonnet,Jean Michel (1890) – Humeau,Cyril (2160), Bastia blind rap 2nd, 2007.

6.Be2 Be7 7.0-0 0-0 8.c4 d6 9.d4 Nbd7 10.Nbd2 e5 11.Qc2 Re8 12.Bc3 Qc7 13.Rfe1 Bf8 Black prepares e4 14.c5 (14.Bd3 b6+=) 14...e4 15.cd6 (15.Ng5 d5=) 15...Bd6 16.Ne5? (16.Ng5 Bh2 17.Kh1-/+) 16...Ne5-/+ (16...Be5?! 17.de5 Nd5 18.Bd4=) 17.de5 Be5 18.h3 Bf5 19.Nc4 (19.Be5!? Re5 20.Red1-/+) 19...Bc3-+ 20.Qc3 Nd5 21.Qb2 Qe7 (21...b5!? 22.Nd2-+) 22.a4 Rab8 23.a5 Qg5 24.Kf1 h5 25.Red1 Re7 0-1. dale70 (2070) - Dewi_Cinta (2020), Rated Blitz game, lichess.org, 2015.

6.c4 d6 A) 7.Bf6 ef6 8.Be2 Be6 9.0-0 Bg7 10.d4 0-0 11.Nbd2; B) 7.Be2 Bg7 8.0-0 (8.Nc3 0-0 9.d4 Re8 10.0-0 e5 11.de5; 8.Bc3 Qf5 9.d4 0-0 10.Bd3 Qg4 11.h3) 8...0-0 9.d4 Bf5 10.Qb3 b6 11.Bc3; C) 7.Bc3 C1) 7...Qf5 8.d4 Bg7 9.Bd3 Qe6 10.0-0 0-0 11.Ng5; C2) 7...Qd8 8.Bf6 (8.d4 Bg7 9.Bd3 0-0 10.0-0 c5 11.Qb3) 8...ef6 9.d4 Bg4 10.h3 Be6 11.Bd3; C3) 7...Qa4 8.Qa4 Ra4 9.Bf6 ef6 10.Be2 Na6 11.Nc3.

7.Bc3 A) 7...Qc7 8.d4 (8.Be2 0-0 9.0-0 d6 10.d4 c5 11.Re1; 8.Qb3 0-0 9.Be2 d6 10.d4 c5 11.Nbd2) 8...0-0 9.Be2 d6 10.0-0 c5 11.d5; B) 7...Qd8 8.d4 (8.Be2 d5 9.c5 Nbd7 10.d4 Ne4 11.Qc2) 8...d5 9.c5 Ne4 10.Be2 Nd7 11.Qc2; C) 7...Qa7 8.d4 (8.Be2 0-0 9.0-0 d6 10.a4 e5 11.d4; 8.Qb3 0-0 9.Be2 d6 10.0-0 Na6 11.d4) 8...0-0 9.Bd3 c5 10.0-0 d6 11.Nbd2; D) 7...Qh5 8.Be2 (8.d4 d5 9.Qb3 0-0 10.c5 Ne4 11.Be2; 8.Qb3 0-0 9.Be2 Qf5 10.0-0 d6 11.d4) 8...0-0 9.0-0 d6 10.d4 c5 11.Nbd2; E) 7...Qa4 8.Qa4 Ra4 9.Be2 d6 10.d4 Bf5 11.0-0.

7.Be2 c5 8.0-0 (8.Bc3 Qc7 9.0-0 0-0 10.Qb3 d6 11.d3; 8.Nc3 0-0 9.0-0 d6 10.Qb3 Nc6 11.Rfb1; 8.Qb3 0-0 9.Nc3 d6 10.0-0 Nc6 11.d3; 8.a4 0-0 9.Bc3 Qd8 10.0-0 Nc6 11.Qb3) 8...0-0 9.Qb3 Nc6 10.Nc3 d6 11.Rfb1.

7.Be2 d5 8.cd5 (8.Bc3 Qd8 9.d4 b6 10.0-0 0-0 11.Nbd2; 8.0-0 dc4 9.Bc4 0-0 10.d4 Nbd7 11.Nbd2; 8.Qb3 dc4 9.Bc4 0-0 10.Ne5 e6 11.0-0) 8...cd5 9.0-0 Nc6 10.Qb3 0-0 11.Rc1.

7.Be2 d6 8.0-0 (8.Nc3 0-0 9.d4 c5 10.0-0 Bf5 11.Qb3; 8.Bc3 Qc7 9.0-0 0-0 10.d4 c5 11.Qb3) 8...0-0 9.d4 Bf5 10.Nh4 Bd7 11.Qb3.

9.d4 Ne4 10.Qc2 Qb4 11.Nc3 (11.Ba3 Ra3 12.Na3 Nc3 13.Nb1 Ne2 14.Qe2 Nd7 15.Nbd2 Nf6; 11.a3 Qb6 12.Nc3 Nf6 13.Bc1 Nbd7 14.h3 Qc7 15.a4 Re8) 11...Nf6 (11...Nc3 12.Bc3 Qa4 13.Qb3 Nd7 14.Bd3 Nf6 15.Rfb1 Qb3) 12.Bc1 Na6 13.Bd2 Qb6 14.Rfb1 Qc7 15.a4 e5.

9.d4 Ne4 10.Qc2 Qb6 A) 11.Nbd2 Nd2 (11...Nc5 12.Rfb1 Na4 13.c5 dc5 14.Ne4 Qc7 15.Nc5 Nb2) 12.Qd2 Nd7 13.a4 Nf6 14.a5 Qc7 15.Bd3 Bf5; B) 11.Qe4 Qb2 (11...Bf5 12.Qe7 Qb2 13.Nbd2 c5 14.g4 Nc6 15.Qd6 Bg4) 12.Nbd2 Re8 13.Rfb1 Qc3 14.Qd3 Qd3 15.Bd3 c5; C) 11.Nc3 Nc3 (11...Nf6 12.Qb3 Nbd7 13.Bd3 Qc7 14.h3 b6 15.a4 Bb7) 12.Bc3 Nd7 13.a4 Nf6 14.Rab1 Qc7 15.Bd3 Bg4.

9.d4 Ne4 10.Qc2 d5 11.Nbd2 (11.Bd3 Bf5+= (11...Na6 12.a3 Bf5 13.Nc3 Nac5 14.dc5 Bc3 15.Bc3 Qc3) 12.Nc3 Na6 13.a3 Nac5 14.dc5 Bc3 15.Bc3 Qc3; 11.cd5 cd5 (11...Nd6 12.Nc3 cd5 13.Qb3 e6 14.Nb5 Nb5 15.Bb5 Bd7) 12.Nc3 Nf6 13.Rfc1 Nc6 14.Qb3 Bf5 15.Ne5 Rfc8; 11.Nc3 Nf6 (11...Bf5 12.cd5 Nc3 13.Qc3 Qd5 14.Ng5 Bf6 15.f4 Nd7) 12.a4 Na6 13.Qb3 Qb4 14.Qb4 Nb4 15.Ba3 Nc2) 11...Bf5= (11...Nd2 12.Qd2 Qd2 13.Nd2 Be6 14.a4 Rc8 15.a5 Nd7) 12.Bd3 (12.Nb3 Qa4 (12...Qc7 13.Nh4 Na6 14.Nf5 gf5 15.a3 dc4) 13.Nh4 Be6= 14.f3 Nd6 15.cd5 cd5) 12...Nd2 13.Nd2 Bd3 14.Qd3 f5 (14...Nd7 15.cd5 cd5) 15.Nb3 (15.Bc3 Qc7) 15...Qa6 16.Rfc1 Nd7 17.Qc2 e6 (17...dc4 18.Qc4 Qc4 19.Rc4=) 18.f4 (18.cd5 cd5 19.a4 f4=) 18...Nb6 (18...dc4 19.Qc4 Qc4 20.Rc4=) 19.Nc5 Qc4 (better 19...Qa7 20.Ne6 Rfe8 21.Ng7 Kg7=) 20.Ne6 (better 20.Qf2!? Qb4 21.a4+= (worse 21.Ne6 Rfb8=+; 21.Nb7? Nc4-+)) 20...Rf6 (20...Qc2 21.Rc2 Rf7 22.Ng7 Kg7 23.Kf2-/+) 21.Qf2 (21.Qb1 Qa4 22.Nc5 Qa7=+) 21...Qb4 (21...Re6 22.Rc4 Nc4 23.Bc1-/+) 22.Ng7=+ Kg7 23.Bc3 Qe7 24.Rab1 Nc4 25.Bb4 Qe4 26.Re1 Rf7 27.Bc5 (27.a3 b6-/+ (27...Na3 28.Ra1+=)) 27...b5 (27...b6!? 28.Bb4 Rfa7-/+) 28.Rb3=+ Ra4 (28...h6 29.Re2=+) 29.a3 Rc7 30.Qh4 (30.Rc1 Rc8=+) 30...Qe6 (30...Rc8 31.Rc3-/+) 31.Qd8 (31.Rd1 Qf6 (31...Ne3? 32.Qe1+-) 32.Qh3 Rc8-/+) 31...Rc8-/+ 32.Qe7 Qe7 33.Be7 Kf7 34.Bb4 Rca8 35.Ra1 Ke6 (35...Ne3 36.Re1 Nc2 37.Re7 Kg8 38.Rh3-/+) 36.Kf2 Kd7 37.h3 h5 38.Kg3 (38.g4 hg4 39.hg4 fg4=+) 38...Nd6 (38...Ne3 39.Ra2-/+) 39.Rc1 (39.Kh4 Ne4=+) 39...Ne4 (39...h4 40.Kf3-/+) 40.Kf3 (40.Kh4 Re8-/+) 40...Rb4 (40...h4!?-/+) 41.Rb4= (41.ab4?? Nd2 42.Ke2 Nb3-+) 41...Ra3 42.Rb2 (42.Rc2 h4=+) 42...Nd6 43.Re2 h4 (43...b4 44.Rg1=+) 44.g3 hg3 45.Kg3 Nc4 46.Kf2 b4 47.Rg1 b3 48.Rg6 b2 49.Rg1?? (better 49.Rg7 Kc8 50.Rg8 Kc7 51.Rg7 Kb6 52.Rg1=) 49...Ra1-+ 50.Ree1 Re1 51.Re1 Nd2 52.h4 b1Q 53.Rb1 Nb1 54.h5 Ke7 55.Kg3 Nd2 (55...Kf6!? 56.Kf2-+) 56.h6 Kf7 57.Kh4 Ne4 58.Kh5 Kf6 59.h7 Kg7 60.h8Q Kh8 61.Kg6 Kg8 (better 61...Ng3!? 62.Kf6-+) 62.Kf5 Kf7 (62...Nf2 63.Ke5 Kf7 64.f5-+) 63.Ke5 Ke7 (63...Nd2 64.f5-+) 64.f5 Nf6 (64...Nd2!? 65.Kf4-+) 65.Kf4 Nd7 66.e4 de4 67.Ke4 Kf6 68.Kf4 (68.d5 c5-+) 68...Nb6 69.Ke4 Nd5 70.Kd3 Kf5 71.Kc4 Ke4 72.Kc5 Nb4! 73.Kb4 (73.Kc4-+) 73...Kd4 74.Kb3 c5 75.Kc2 Kc4 76.Kb1 Kb3 77.Kc1 c4 78.Kd2 c3 79.Kd1 Kb2 80.Ke2 c2 81.Kf3 c1Q 82.Kg4 Qf1 83.Kg3 (83.Kg5 Qd3 84.Kf6 Kc3 85.Ke5 Kc4 86.Kf4 Kd5 87.Kg4 Ke5 88.Kg5 Qg3 89.Kh5 Kf5 90.Kh6 Qg6) 83...Kc3 84.Kg4 Kd4 85.Kg3 (85.Kg5 Ke5 86.Kg4 Qg2 87.Kh5 Kf5 88.Kh4 Qg4) 85...Ke5 86.Kh2 Ke4 87.Kg3 Qg1 88.Kh3 (88.Kh4 Kf4 89.Kh5 Qg5) 88...Kf3 89.Kh4 Qg4 0–1. Tomasi,Stephane (1760) – Pieri,Thierry (1800), Provence–ch France, 1993.

9.d4 Ne4 10.Qc2 Nf6 A) 11.Qd1 Bf5 (11...Be6 12.Nc3 Nbd7 13.h3 Rfe8 14.Bd3 Rec8 15.Rc1 Nb6) 12.Qb3 Nbd7 13.Nc3 e5 14.h3 Rfe8 15.Rfe1 e4; B) 11.Nc3 Na6 (11...Be6 12.h4 Na6 13.a3 h6 14.Rfb1 Ng4 15.Bc1 Qc7) 12.e4 Nc7 13.Rfd1 Ne6 14.g3 Rd8 15.Rab1 Bd7; C) 11.Nbd2= Nbd7 (11...Qa4 12.Qb3 Bf5 13.Ng5 Bh6 14.f4 Nbd7 15.Bc3 d5) 12.Bc3 Qa4 13.Qa4 Ra4 14.Bd3 Ra3 15.Nb1 Ra8.

9.d4 Ne4 10.Qc2 Ng5 A) 11.Ng5 Qg5 12.f4 Qf5 13.e4 Qa5 14.Nd2 Qb6 15.Nb3 Na6; B) 11.Nbd2 Nf3 (11...Nd7 12.Ng5 Qg5 13.Ne4 Qh6 14.c5 d5 15.Ng3 e5) 12.Nf3 Na6 13.a3 Nc7 14.Bc3 Qa4 15.Qa4 Ra4; C) 11.Nc3 Bf5 (11...Nf3 12.Bf3 Nd7 13.Ne4 Nf6 14.Bc3 Qc7 15.a4 Bf5) 12.e4 Nf3 13.Bf3 Be6 14.d5 Bd7 15.Ne2 Bb2.

9.d4 Ne4 10.Nbd2 A) 10...Nc3 A1) 11.Qe1 Ne2 (11...Nd7 12.Bc3 Qc3 13.Qb1 Nf6 14.Rc1 Qa5 15.c5 dc5) 12.Qe2 Na6 13.Rfc1 Bf5 14.e4 Bg4 15.Bc3 Qa3; A2) 11.Bc3 Qc3 12.Ne4 Qa5 13.Qb3 Nd7 14.g3 Rd8 15.Kg2 Nf6; B) 10...Bf5 B1) 11.g4 Nd2 12.Nd2 Be6 13.Ne4 Nd7 14.Bc3 Qc7 15.Ng5 Nc5; B2) 11.Nb3 Qd8 (11...Qb4 12.Nh4 Be6 13.Qd3 Nf6 14.f4 Ra4 15.Rfc1 Na6) 12.Nh4 Be6 13.Qc2 f5 14.f3 Nf6 15.e4 fe4; B3) 11.Ne4 Be4 12.Nd2 Bf5 13.g4 Be6 14.Ne4 Nd7 15.Bc3 Qc7; C) 10...Nf6 C1) 11.Qb3 Nbd7 (11...Na6 12.Bc3 Qf5 13.a4 Nc7 14.a5 Ne6 15.h3 Ne4) 12.e4 Qc7 13.h3 e5 14.Qe3 ed4 15.Bd4 Re8; C2) 11.Nb1 Bf5 (11...Be6 12.Nc3 Nbd7 13.h3 Bh6 14.Qc2 Nb6 15.Qb3 Bg7) 12.Qb3 Nbd7 13.Nc3 e5 14.a3 e4 15.Nd2 c5; C3) 11.Qc2 Nbd7 (11...Qa4 12.Qb3 Bf5 13.Ng5 Bh6 14.f4 Nbd7 15.e4 Bg4) 12.Bc3 Qa4 13.Qb3 Re8 14.Rfd1 b6 15.Ng5 Bb7; D) 10...Nd2 D1) 11.Nd2 Nd7 (11...Na6 12.Qc1 Qf5 13.e4 Qf4 14.Bc3 Nc7 15.Qb2 Qf6) 12.Qc2 Nf6 13.Bc3 Qc7 14.h3 d5 15.Bd3 dc4; D2) 11.Qd2 Qd2 (11...Nd7 12.Bc3 Qc7 13.e4 c5 14.d5 Bc3 15.Qc3 Ne5) 12.Nd2 Bf5 13.e4 Bd7 14.Rfb1 Na6 15.a3 f5.

9.d4 Ne4 10.Nfd2 A) 10...Nf6 A1) 11.Nc3 Na6 (11...Be6 12.Qb3 Nbd7 13.Nce4 Ne4 14.Ne4 Nf6 15.Bc3 Qc7) 12.Qb3 Bf5 13.a3 e5 14.Rfe1 Rfe8 15.h3 ed4; A2) 11.Qb3 Be6 (11...Bf5 12.Nc3 Nbd7 13.Bf3 Be6 14.Qc2 Nb6 15.c5 Nbd5) 12.Nc3 Nbd7 13.Nce4 d5 14.Nc3 Qc7 15.h3 Ra5; A3) 11.Nf3 Bf5 (11...Nbd7 12.Nc3 Nb6 13.Qb3 Bf5 14.a4 Rfe8 15.h3 Red8) 12.Qb3 Nbd7 13.Nc3 e5 14.a3 e4 15.Nd2 c5; B) 10...Ng5 B1) 11.h4 Ne6 (11...Qb6 12.Qb3 Qb3 13.ab3 Ra1 14.Ba1 Ne6 15.Nc3 Bd7) 12.Nc3 Nd7 13.Nde4 Nf6 14.Qb3 Rd8 15.Rfe1 Qf5; B2) 11.Qb3 e5 (11...Nd7 12.f4 Ne6 13.Ne4 f5 14.Ng5 Ng5 15.fg5 e5) 12.c5 d5 13.Bc3 Qc7 14.h4 Ne6 15.Nf3 ed4; B3) 11.Nc3 Nd7 (11...Na6 12.f4 Ne6 13.Nb3 Qb6 14.a4 Bd7 15.a5 Qc7) 12.f4 Ne6 13.Nb3 Qb4 14.f5 gf5 15.Rf5 Nf6; C) 10...Bf5 C1) 11.g4 Qb6 (11...Nd2 12.Nd2 Be6 13.Ne4 Nd7 14.Bc3 Qc7 15.Ng5 Nb6) 12.Qb3 Qb3 13.ab3 Ra1 14.Ba1 Nd2 15.Nd2 Be6; C2) 11.f4 Nd2 (11...Nd7 12.Ne4 Be4 13.Nc3 Bf5 14.Qb3 Ra6 15.c5 dc5) 12.Qd2 Nd7 13.Qa5 Ra5 14.Bc3 Raa8 15.g4 Bc2; C3) 11.Ne4 Be4 12.Nc3 Bf5 13.e4 Be6 14.Qd2 Na6 15.h3 Bf6; D) 10...Nd2 D1) 11.Nd2 Nd7 (11...Bf5 12.g4 Be6 13.Ne4 Nd7 14.Bc3 Qc7 15.Ng5 Nc5) 12.Qc2 Nf6 13.Bc3 Qc7 14.Bd3 e5 15.Qb2 Qe7; D2) 11.Qd2 Be6 (11...Nd7 12.Qa5 Ra5 13.Bc3 Ra7 14.a4 Nf6 15.Bd3 Bf5) 12.Qa5 Ra5 13.Bc3 Ra4 14.Nd2 c5 15.Rfc1 cd4; D3) 11.Bc3 Qc7 (11...Qa7 12.Nd2 c5 13.Ne4 f5 14.Ng5 Nc6 15.Qb3 Bf6) 12.Nd2 Nd7 13.Qb3 Nf6 14.Rab1 Ra7 15.e4 Rd8.

9.d4 Ne4 10.Bd3 A) 10...d5 A1) 11.cd5 cd5 (11...Qd5 12.Nc3 Nc3 13.Bc3 Be6 14.e4 Qd6 15.a4 Nd7) 12.Nbd2 Bf5 13.Be4 de4 14.Nh4 Nd7 15.f3 Qb4; A2) 11.Qc2 Na6 (11...Bf5 12.Nc3 Na6 13.a3 Nac5 14.dc5 Bc3 15.Bc3 Qc3) 12.a3 Bf5 13.Nc3 Nac5 14.dc5 Bc3 15.Bc3 Qc3; A3) 11.Nbd2 Nd2 (11...Bf5 12.Be4 de4 13.Ng5 Nd7 14.Nge4 Nf6 15.f3 b5) 12.Qd2 Qd2 13.Nd2 Be6 14.cd5 cd5 15.Rfc1 Nc6; B) 10...Nf6 B1) 11.Bc3 Qc7 (11...Qh5 12.Nbd2 Na6 13.Qb3 Rb8 14.a4 Bd7 15.a5 Nc7) 12.Nbd2 Nbd7 13.Qb3 Re8 14.Rfe1 e5 15.Ng5 d5; B2) 11.Be2 Bf5 (11...Nbd7 12.Nc3 Nb6 13.h3 Bf5 14.Qb3 Rfe8 15.a4 Red8) 12.Qb3 Nbd7 13.Nc3 e5 14.h3 Rfe8 15.Rfe1 e4; B3) 11.Qb3 Bf5 (11...Nbd7 12.Bc3 Qh5 13.Nbd2 Re8 14.Rae1 e5 15.Qb1 b6) 12.Bc3 Qc7 13.Bf5 gf5 14.Nbd2 Nbd7 15.a4 d5; C) 10...Bf5 C1) 11.Nh4 Nd7 (11...Qb6 12.Qc2 Ng3 13.Nf5 Nf5 14.Bc3 Nd7 15.Nd2 e6) 12.Qc2 d5 13.Nf5 gf5 14.Nc3 dc4 15.Bc4 Nd6; C2) 11.Qc2 d5 (11...Ng5 12.Ng5 Bd3 13.Qd3 Qg5 14.f4 Qa5 15.Bc3 Qc7) 12.Nc3 Na6 13.a3 Nac5 14.dc5 Bc3 15.Bc3 Qc3; C3) 11.g4 Qb4 (11...Qb6 12.Bc1 Nf2 13.Rf2 Bg4 14.Nc3 e5 15.Rb1 Qa5) 12.Ba3 Ra3 13.gf5 Rd3 14.Qd3 gf5 15.a3 Qa5; D) 10...Qb6 D1) 11.Nc3 Nc5 (11...Qb2 12.Ne4 Ra2 13.Rb1 Qa3 14.c5 dc5 15.Bc4 Bf5) 12.Rb1 Nd3 13.Qd3 Nd7 14.h4 Qa6 15.Rfd1 Nb6; D2) 11.Bc3 f5 (11...Nc3 12.Nc3 Na6 13.Qb3 Qa5 14.Ne4 Nb4 15.Rfb1 Nd3) 12.Qb3 Nd7 13.Nbd2 Nc3 14.Qc3 Qc7 15.Qb3 e5; D3) 11.Qb3 Qb3 12.ab3 Ra1 13.Ba1 Nc5 14.Bc2 Nba6 15.Bc3 Ne6.

9.d4 Ne4 10.h3 A) 10...Na6 A1) 11.Qb3 Bf5 (11...Be6 12.Rd1 b5 13.Nbd2 bc4 14.Nc4 Qf5 15.g4 Qd5) 12.Rd1 Nac5 13.dc5 Nc5 14.Bg7 Nb3 15.ab3 Qb6; A2) 11.a4 Bf5 (11...Nac5 12.Qc2 Qb4 13.Ra2 Qb3 14.Qb3 Nb3 15.Nc3 Nbc5) 12.Qb3 Rfe8 13.Nh4 Be6 14.Nf3 Rf8 15.Nc3 Nac5; A3) 11.Nbd2 Nd2 (11...Nec5 12.Rb1 Na4 13.Ba1 Nc7 14.Qc2 Ne6 15.Ne4 f5) 12.Qd2 Qd2 13.Nd2 Nc5 14.Rfb1 Na4 15.Bg4 f5; B) 10...Nd7 B1) 11.Qb3 Ndf6 (11...b6 12.Nc3 Ndf6 13.Bd3 Bf5 14.Qc2 Ng5 15.Ng5 Bd3) 12.Nc3 Bf5 13.g4 Be6 14.Bd3 Ng5 15.Ng5 Qg5; B2) 11.Nbd2 Nd2 (11...Ndf6 12.Ne4 Ne4 13.Qc2 f5 14.h4 Bf6 15.Ng5 Ng5) 12.Nd2 Nb6 13.Qc2 Na4 14.Rab1 e5 15.Nb3 Qc7; B3) 11.Qc2 Ndf6 (11...f5 12.Nc3 Ndf6 13.Nd2 Nd2 14.Qd2 Be6 15.a4 Ra7) 12.Nc3 Bf5 13.Bd3 Ng5 14.Ng5 Bd3 15.Qd3 Qg5; C) 10...Be6 C1) 11.Bd3 f5 (11...Qb6 12.Nc3 Nc5 13.Rb1 Nd3 14.Qd3 Na6 15.a3 Qa5) 12.Qb3 Nd7 13.Nc3 Ndf6 14.Ne2 b5 15.Nf4 Bf7; C2) 11.Nbd2 Nd2 (11...Nc5 12.Nb3 Qc7 13.Nc5 dc5 14.Ng5 Nd7 15.Ne6 fe6) 12.Nd2 Nd7 13.Ne4 Nf6 14.Bc3 Qf5 15.Nf6 Bf6; C3) 11.Qc2 Ng5 (11...Nf6 12.Nc3 Nbd7 13.e4 Nb6 14.d5 Bd7 15.Nd4 cd5) 12.Nbd2 Nf3 13.Bf3 Nd7 14.Bc3 Qa4 15.Rfc1 Nb6; D) 10...Bf5 D1) 11.Nbd2 Nd7 (11...Nd2 12.Qd2 Qd2 13.Nd2 Na6 14.g4 Be6 15.Rfb1 Ra7) 12.Ne4 Be4 13.Qb3 Bf6 14.Bc3 Qc7 15.Nd2 Bf5; D2) 11.g4 Be6 (11...Bd7 12.Qc2 Ng5 13.Ng5 Qg5 14.Nd2 Qh6 15.Kg2 Be6) 12.Qc2 Ng5 13.Ng5 Qg5 14.Nd2 Nd7 15.Nf3 Qh6; D3) 11.Nfd2 Nd7 (11...Nd2 12.Bc3 Qa7 13.Nd2 c5 14.Nb3 Nc6 15.Bg4 cd4) 12.Ne4 Be4 13.Nc3 Bf5 14.Qd2 Nb6 15.Rfd1 d5.

9.d4 Bf5 10.Nbd2 (10.Nh4 Bd7 11.Qb3) 10...Na6 (10...c5 11.Nb3) 11.Qb3 (11.a4=) 11...c5 12.Bc3 (12.Qb7? Rfb8 13.Qe7 Rb2-+) 12...Qc7 13.Nh4 cd4 14.ed4 Be6 15.Rfb1 Rfb8 (15...Ra7 16.Bf3=) 16.Qb6 Qb6 17.Rb6 Nd7 (17...d5 18.c5=) 18.Rb3 Nac5 (18...d5 19.Nhf3=) 19.dc5+= Nc5 20.Bg7 Nb3 21.ab3 Kg7 22.Ra8 Ra8 23.f4 Ra2 24.Nhf3 Bf5 25.Kf2 e5 26.Ke3 f6 27.g3 h6 (27...Rc2 28.Nh4+=) 28.Bd3 Bd3 29.Kd3 b6 (29...Kf7 30.h3+=) 30.Kc3 (30.f5 Ra5+-) 30...g5 (30...Kf7 31.Kb4+=) 31.fg5+- hg5 32.Ne4 g4 33.Nh4 (33.Nfd2 f5 34.Nd6 f4+-) 33...Rh2 (33...Kf7!? 34.Nd6 Ke6+=) 34.Nd6+- Rf2 35.b4 Kf8 36.Nc8 Ke8 (better 36...Ra2!? 37.Nf5 Ra3 38.Kb2 Rf3+-) 37.Nb6+- f5 38.c5 (38.Nd5!? Kd8 39.Ne3 f4 40.Ng4 fg3 41.Ne5 Rf4+-) 38...f4 39.c6 (39.Nc4!? Kd8 40.gf4 ef4+-) 39...Kd8+- 40.Nd5 (40.gf4 Kc7 41.Nd7 ef4+-) 40...fg3 41.b5 g2 (better 41...Rf1+-) 42.Ng2! Rg2 (42...Rf1+-) 43.b6 Rg1 (43...Rg3 44.Kb4 Kc8 45.Ne7 Kd8 46.c7 Ke7 47.c8Q+-) 44.b7 Rc1 45.Kb2 Rc6 46.b8Q (46.b8Q Kd7 47.Qe5+-) 1–0. Svitek,Volker (2130) – Adair,Robin (2005), Frankfurt–ch, 2007.

5.Bc3 Qf4 6.Nf3 d5 -/+.

5.Bc3 Qf4 6.Nf3 d6 -/+.

5.Be5 d6-/+ 6.a3 Qa4 7.Nc3? Qa5 8.Bd4-/+ e5 9.fe5 de5 10.Bf2 Be6 11.Nf3=+ f6 12.e3 Ba3 13.Nb1=+ Qb4 14.c4 Nd7 15.Qc2 Ne7 16.Qc3+= Qc3 17.dc3+/– Nc5 18.Ra3 Kd7 19.Be2+= Ra3 20.Na3 Ra8 21.Nb1 Ra2 22.g4 Ne4 23.Rg1 h6 24.Nfd2+/– Nd2 25.Nd2 Ra1 26.Bd1 Rc1 27.Nb3 Rc3?? 28.Nc5+- (28...Ke8 29.Ne6+-) 1–0. Kossobudzki,Robert – Mus,Roman, corr 2. AMM Poland, 1994.

5.Be5 d6-/+ 6.a3 Qa5 7.Bc3 =+.

5.Be5 d6-/+ 6.c3?? Qb2-+ 7.c4 (7.Na3 Ra3 (7...de5?! 8.Nc4 Qb5 9.e4-+) 8.Bd4 c5-+) 7...de5 8.Nc3 ef4 9.Nh3 (9.Rb1 Qa3-+) 9...Bh3 10.gh3 Qb6 11.Bg2 e5 12.Rb1 Qc7 13.Qb3 Ra7 14.Rg1 Bc5 15.Rf1 Ne7 16.Ne4 Nd7 17.h4 b6 18.a4 0-0 (19.Nc5 Nc5 20.Qb6 Qb6 (20...Ra4?? 21.Qc7 Ng6 22.h5+-) 21.Rb6 Na4-+; 18...Bd4 19.Qb4-+) 0–1. Sterle – Diener,Diener, corr, 1987.

4.a3 e6 5.e4 Nf6 6.e5 Ne4 7.d3?? (7.Nf3 d5=) 7...Rd5?? (better is 7...Nf2 8.Kf2 Qb6 9.Kg3 Qb2-+) 8.Nc3 (8.Ra2 Qa5 9.c3 d6=+) 8...Nc3 9.Bc3 f6 (better is 9...d6!?=) 10.ef6+/– gf6 11.Be2 Bc5 12.Nf3 (12.d4 Bd4 13.Bd4 c5+=) 12...e5 13.0-0 e4 (better is 13...0-0+/–) 14.Nd2+- e3 15.fe3 Be3 16.Kh1 f5?? (better is 16...0-0+-) 17.Bh8 Qg5 (17...Kf7 18.c4 Ra5 19.Bc3+-) 18.Nf3 (18.Nc4!? f4 19.Bf3 Rf5 20.Nd6 Kd8+-) 18...Qg8 (18...Qe7 19.d4+-) 19.Bb2 (19.c4 Ra5 20.Be5 Ra8+-) 19...f4 20.Ne5 Bd4 (20...Kd8 21.Ng4 Rb5 22.Rb1+-) 21.Bd4 Rd4 22.Bh5 Kf8 (22...Kd8 23.c3 Rd5 24.Bf7+-) 23.Qg4 (23...Qg4 24.Bg4+-; better is 23.Qd2 Qg7 24.Rae1 Qh6+-) 1–0. KHW – tobey, ChessWorld.net, 2001.

4.Nc3 d5 5.d4 e5 6.de5 Qb6 7.Rb1 Bb4 8.a3 Ra3 9.Qc1 Rc3 ½–½. Smith,Simon – Kulbacki,Jim, corr or02–024, 2002.

4.c4 d6 5.Qc2 Na6 6.a3 Nf6 7.Nf3 e5 8.d3 Nc5 9.Nbd2 Be7 10.g3 0-0 11.Bg2 b5 12.cb5 cb5 13.0-0 Bb7 14.e4 Qb6 15.d4 Nce4 16.de5 de5 17.Ne5 Nd2 18.Qd2 Bg2 19.Kg2 Rd8 20.Qf4 Qb7 21.f3 Bd6 22.Rfd1 Raa8 23.Qd4 Be7 24.Qe3 Rd1 25.Rd1 Rd8 26.Rd8 Bd8 27.Qd4 Be7 28.Nd7 Bf8 29.Nf6 gf6 30.Qf6 1–0. sagonek – oldi62, playok.com, 2012.

4.c4 e6 5.Nf3 Nf6 6.e3 Be7 7.Be2 (7.d4 0-0=) 7...0-0 (7...d5 8.cd5 ed5 9.0-0=) 8.0-0 d5 9.d4 Nbd7 10.c5 b6 11.cb6 Qb6 12.Qc2 (12.Bc3 Ra8=) 12...Ba6=+ 13.Ba6 (13.Rc1 Be2 14.Qe2 Rb8=+) 13...Qa6 14.Nbd2 Rb8 (14...Rc8 15.Rfc1=+) 15.Bc3 Ra3 16.Nb3 (16.Rfc1 Bd6=+) 16...Nb6 (16...Ne4 17.Rfc1-/+) 17.Bb2 (better is 17.Ne5 Nc4 18.Nc4 Qc4 19.Rfc1=+) 17...Ra2?? (better is 17...Ra4=+) 18.Ra2+- Qa2 19.Ra1 Qa1 20.Ba1 Nc4 21.h3 (21.Nfd2!? Nd2 22.Nd2 Bb4+-) 21...Ne4 22.Bc3?? (22.Ne5 Ne5 23.de5 c5+-) 22...Ra8?? (better is 22...Na3 23.Qb2 Nc4=) 23.Ne5 Na3? 24.Qb2 Bf8 25.Nc6 Nb5 26.Bb4 Bb4 27.Nb4 Nec3 28.Nc5 h6 29.Nc6 Ra2 30.Qb4 Ra1 31.Kh2 Rb1 32.Qa5 Ne4 33.Qd8 Kh7 34.f3 Nf6+- 35.Qf8 Nc3 36.Qf7 Nd1 37.Ne6 Ne3 38.Qg7 1–0. Rabiator (1930) – Eralos (1890), Partida evaluada, 3m + 0s, 2006.

4.e3 Qb6 5.Bd4 c5 6.Bc3 Ra8 7.a4 Nc6 8.Na3 d5 9.Nb5 (9.Bb5 Nf6=) 9...Nf6 10.Bf6 gf6 (10...ef6 11.Nf3=) 11.Nf3 e6 (11...e5 12.c4=) 12.Be2 (12.c4 Qa5=) 12...Be7 (12...e5 13.c4 dc4 14.Bc4=) 13.0-0 Bd7 (13...e5 14.c4 d4 15.Re1=) 14.c4 Nb4 15.d4 Bb5 16.ab5 0-0 17.Qb3 Ra5 (17...cd4 18.Nd4 Bc5 19.Ra8 Ra8 20.Rd1+=) 18.Ra5 Qa5 19.dc5 Bc5 20.Qb2 Be7 21.Ra1 Qb6 22.cd5 Nd5 23.Qd4 e5?? (better 23...Qd4 24.Nd4 Rd8+/-) 24.Qd5+- Rd8 25.Qc4 (25.Qe4 Bc5+-) 25...Qe6 26.Qe6 (26.Qe4!? Qd5 27.Qg4 Kh8+-) 26...fe6 27.g3 Kf7 28.Ra7 Rd7 29.b6 (29.Ra8 Bc5+-) 29...Bc5 30.Bb5 (30.Ba6!? e4 31.Nd4 Bb6 32.Rb7 Rb7 33.Bb7 f5+-) 30...Re7 (30...Bb6 31.Ra4 Rd1 32.Kg2+-) 31.Kg2 Bb6 32.Ra8 Bc5 (32...e4 33.Nd2 f5 34.Nc4+-) 33.Bd3 h6 (33...Kg7 34.Kf1+-) 34.Rh8 f5 35.Rh6 (35.Ne5 Kg7 36.Rd8 Bb6+-) 35...e4 (35...Kg7 36.Rh5 e4 37.Be4 fe4 38.Rc5 ef3 39.Kf3 Rf7 40.Ke2+-) 36.Ng5 (better 36.Ne5!? Kg7 37.Rg6 Kh7+-) 36...Kg7 37.Be4?? (better 37.Rh7 Kf6 38.Be4 Kg5 39.Re7 Be7 40.h4 Kh5 41.Bb7+-) 37...Kh6-+ 38.Bb7? (better 38.Ne6 Re6 39.Bb7-+) 38...Kg5 (38...Rb7?! 39.Ne6 Bd6 40.h4-+) 39.Bf3 e5 Black plans e4 40.h4 Kg6 41.Bd5 (41.g4 e4 42.Be2 fg4-+) 41...Rd7 (41...e4 42.Bc6-+) 42.Be6 (42.e4-+) 42...Rd2 (better 42...Rd6 43.Bc8 Rd8-+) 43.Kf3 (43.g4 Be3 44.Bf5 Kf6 45.Kf3-+) 43...e4 44.Kf4 (44.Kg2 Be3 45.Kh3 Bf2-+) 44...Rf2 (44...Bd6) 45.Ke5-+ Rd2 (better 45...Be3 46.h5 Kg5-+) 46.Bf5 Kf7 (46...Kh5 47.Ke4 Re2 48.Bd7-+) 47.Be4 (47.g4 Be3 48.Ke4 Re2-+) 47...Be3 48.g4 Bf2 49.h5 Bh4 0-1. zembelek (2115) - kurzeme (1985), Rated Blitz game, lichess.org, 2014.

4.e3 Rc5 5.Nf3 d6 6.d4 Rd5 7.c4 Ra5 8.Be2 Bf5 9.0-0 e6 10.Nbd2 Bg4 11.Nb3 Ra8 12.h3 Bh5 13.e4 Nf6 14.Nbd2 Be7 15.Qc2 0-0 16.Qc3 Nbd7 17.Rfe1 Qc7 18.a3 Rfc8 19.Rac1 Qd8 20.e5 de5 21.Ne5 Be2 22.Re2 b5 23.Ne4 Ne5 24.de5 Ne4 25.Re4 bc4 26.Rc4 c5 27.a4 Ra7 28.Ba3 Qd5 29.f4 Rb7 30.Bc5?? Rc5?? 31.Rc5+- Bc5 32.Qc5 Qc5 33.Rc5 Rb1 34.Kh2 f5 35.a5 Ra1 36.Rc6 Ra5 37.Re6 Kf7 38.Rd6 Ra7 39.g4 Ra2 40.Kg3 Ra3 41.Kf2 Ra2 42.Kg3?? Ra3 43.Kg2 Ra2 44.Kg3?? Ra3= ½–½. Bonetti,Shane – MacChess 5.0, 2000.

4.e4 d6 5.d4 Nf6 6.Bd3 Na6 7.Bc3 Rg5 8.g3 Rh5 9.Nd2 Nc7 10.a4 e6 (better is 10...d5+=) 11.e5+- de5 12.de5 Qd5 (better is 12...Nfd5 13.Qh5 Nc3+-) 13.ef6=+ Qh1 14.Qh5 Qg1 (14...g6 15.Qe5 Qg1 16.Ke2 Nb5 17.Rg1 Bd6 18.ab5 Be5 19.Be5 0-0+-) 15.Ke2 g6 (15...Nd5 16.Rg1 Nc3 17.Ke1 gf6+-) 16.Qe5 (16.Rg1?! gh5 17.Rd1 Nd5+/–) 16...Qh2 (16...Nb5 17.ab5 Qa1 18.Qb8+-) 17.Qc7 Qh5 18.Nf3 (18...Qd5 19. +-) 1–0. woschkat (2395) – daver (2235), net–chess.com, 2003.

4.e4 Nf6 5.Qf3 Ne5Qb6 6.Bc3 (6.Bf6!? ef6 7.Nc3=) 6...Ra2!-/+ 7.Qd1? (7.Ra2 Qb1 Double attack) 7...Ne4-+ 8.d4?? (8.Nh3 Nc3 9.Nc3 Ra1 10.Qa1-+) 8...e5 (better is 8...Ra1 9.Ba1 Qa5 10.c3 Qa1-+) 9.Ra2+- Bb4 10.Ne2 (10.Bb4 Qb4 11.c3 Nc3 12.Nc3 ed4+-) 10...Na6? (10...Nc3 11.Nbc3 ed4+=) 11.g3 (better is 11.Bb4 Qb4 12.c3+-) 11...Nc3= 12.Nbc3 (12.Nec3!? ed4 13.Ba6 ba6 14.0-0 dc3 15.Qe2 Kf8 16.Re1=+) 12...ed4-/+ 13.Qd4?? (better is 13.Bh3-/+) 13...Qd4-+ 14.Nd4 Bc3 15.Ke2 Bd4 16.Bg2 0-0 17.Rd1 Bf6 18.Kf1 (18.c4 Re8 19.Kf1 d5 20.cd5 cd5 21.Bd5 Nb4-+) 18...d5 (18...Nb4 19.Ra4 Nc2 20.Rd6-+) 19.Re1 (19.Rb1 b5-+) 19...Bf5 (19...Nb4 20.Ra7 Nc2 21.Rc1-+) 20.Bf3 (20.Rb1 Nc5-+) 20...Bc3 (20...Nb4!? 21.Ra7 Nc2 22.Rd1-+) 21.Re2 Nb4 22.Ra7 (22.Ra3 d4 23.Re7 b6-+) 22…Bc2 0–1. Steve20 – SIRMO, chessworld.net, 2006.

4.Nf3 e6 5.g3 f5 6.Bg2 d5 7.0-0 Nd7 8.Nd4 Ndf6 9.c4 (9.Nb3 Ra8=) 9...Bd6 (9...dc4!? 10.Qc2 Qb6+=) 10.Nb3= Ra7 11.c5 Bc7 12.d4 Nh6 13.Nc3 0-0 14.f4 Qe8 15.Qd2 Qg6 16.a4 Nhg4 17.h3 Nh6 18.Qe3 Nh5 19.Rf3 Kh8 20.Nc1 Ng8 21.Nd3 Ngf6 22.Ne5 Be5 (22...Qh6!?+=) 23.fe5+/– (worse is 23.de5 Nd7+=) 23…Ne4 (23...Ne4 24.g4 Nhg3 25.Rg3 Ng3 26.Qg3 Bd7+-) 0–1. Poulsen,Rene (2080) – Vermaas,Fred, IECG, 2004.

4.h4 d6 5.e4 Be6 6.Bc3 (6.c4!?=) 6...Ra2=+ 7.Ra2 Ba2 8.Na3 Nd7?? (better 8...e5-/+) 9.Qa1+- Be6? (better 9...Ngf6 10.Bf6 ef6 11.Qa2 d5+-) 10.Bg7+- Bg7 11.Qg7 Ndf6 (11...Qa5 12.Nc4 Bc4 13.Qh8 Bf1 14.Qg8 Nf8 15.Kf1 Qd2+-) 12.Qh8 (12.Nc4 Qa8 13.Ne3 (13.Qh8?! Qa1 14.Ke2 Bc4 15.d3 Qc3=) 13...Qa1 14.Ke2+-) 12...Qa5+- 13.Bd3 Qa3 14.f3 Qc1 15.Kf2 (15.Ke2 c5 16.g4 c4=+) 15...Qd2+= 16.Ne2 Qb4 (better 16...Qa5!? 17.Rb1 b6+=) 17.Ra1 Qc5 18.Kf1 Bc8 (better 18...Qh5+-) 19.Ra8 Kd7 20.Qg7 Qh5 (20...Qb6 21.e5 Qb1 22.Kf2 Qb6 23.Ke1 de5 24.Bf5 Kd6 25.Rc8+-) 21.Qf8 (21.Qf8 Ne8 22.Qg8+-) 1–0. beatmeeasy (1970) – Comes_Paulus (1945), lichess.org, 2020.

5.Nf3 Na6 6.Bd4 f6 (6...b5 7.e4=) 7.c4 Qa5 (7...Rc4!? 8.e3 d5=) 8.Bc3+/– Nb4 9.a3 Qa7 10.Bd4 (10.Bb4?! Rb4 11.e3 Ra4=; 10.ab4?! Ra1 11.Bd4 b6 12.Ba1 Qa1=) 10...Qa8 11.Bb2 (< 11.ab4 Ra1 12.Ba1 Qa1=) 11...Ra5 12.d4 (12.ab4?! Ra1 13.Ba1 Qa1=) 12...Na6 13.Bc3 Rh5 14.Nbd2 Nh6 15.Ne4 Nf7 16.Bd2 g5 17.h4 Rh6 18.Rg1 d5 19.cd5 cd5 20.Nc3 e6 (20...Nc7 21.hg5 fg5 22.e4+-) 21.e4 de4 (21...Bd7 22.hg5 fg5 23.Ng5 (23.Bg5?! Ng5 24.Ng5 Qd8+/–) 23...Ng5 24.Bg5+-) 22.Bb5 Bd7 23.Bd7 Kd7 24.hg5 Ng5 (24...fg5 25.Ne4 b5 26.Neg5 Ng5 27.Bg5 Qe4 28.Be3+-) 25.Ng5 fg5 26.Qa4 Kc7 (26...b5 27.Nb5 e5 28.Na7 Kc7 29.Rc1 Bc5 30.Nb5 Kd7 31.Nc3 Qc6 32.dc5 Qa4 33.Na4 Rh2+-) 27.Qa5 Kc8 28.Na4 (28.Ne4?! Bg7 29.Bg5 Rg6 30.Nd6 Kd7+-) 28...Qa7 (28...Qb8 29.Nb6 Kd8 30.Bg5 Ke8 31.Qb5 Kf7 32.Qd7 Kg6 33.Bh6 Kh6 34.Rh1 Kg5+-) 29.Nb6 Kd8 30.Bg5 Ke8 31.Bh6 Bh6 32.Qh5 Ke7 33.Qh6 Kd6 (33...Qb6 34.Qg7 Kd6 35.Qh8 Qb2+-) 34.Nc4 Kd5 35.Qg5 Kc4 36.Rc1 Kb3 37.Qb5 Ka2 38.Rc2 Ka3 39.Rc3 Ka2 40.Qb3 (40...Ka1 41.Rc1) 1–0. orane (2100) – robertthomas, Live Game Caissa's Web, 2004.

5.Nf3 d5 6.Bd4 =.

5.Nf3 Nf6 6.Bd4 Ng4 7.e3 Qa5 8.Nc3 Ra3 9.Rb1 d6 10.h3 Ne5 11.Ne5 de5 12.Bb6 Qa8 13.Bc5 Ra5 14.d4 ed4 15.ed4 Nd7 16.Bb4 Rf5 17.Bd3 Rf4 18.Ne2 Rh4 19.Rb2 e5 20.Bf8 Kf8 21.g3 Qa3 22.Qc1 Rh5 23.g4 Qa5 24.c3 Qd5 25.Rh2 Rh6 26.Qe3 ed4 27.Nd4 Nc5 28.Rd2 Bg4 29.Be2 Ne4 30.c4 Qd6 31.Qe4 Qh2 32.Nf5 Qc7 33.Qg4 Rg6 34.Qd4 Ke8 35.Qe3 Re6 36.Ng7 Ke7 37.Ne6 Qa5 38.Nc5 Kf6 39.Qh6 Ke7 40.Qd6 Ke8 41.Qe5 Kf8 42.Nd7 Kg8 43.Qg3 Qg5 44.Qg5 1–0. b4_player (2170) – MB (2090), GameColony.com, 2002.

5.e3 d5 6.Nf3 Nf6 7.Be2 Nbd7 8.0-0 Ne4 9.Bb2 Qb6 10.Qc1 f6 11.d4 Nd6 12.Nbd2 Ra4 13.c4 dc4 14.e4 g6 15.e5 fe5 16.de5 Bg7 17.Qc2 (17.ed6 A) 17...Bb2 18.Qc2 Qb4 19.a3 (< 19.Nc4 Ba1 20.Rb1 Qb1 21.Qb1 Bf6=) 19...Ra3 20.Ra3 Ba3 21.Nc4+/–; B) 17...Qb2 18.Qd1 b5-/+ (18...Qa1?! 19.Qa4 Qf6 20.Ne4=)) 17...Ra6 18.Rfb1 (18.ed6?! Qb2 (18...Bb2?? 19.Nc4 Qc5 20.Qb2+-) 19.Qc4 Ne5= (19...Qa1?? 20.Ra1 ed6 21.Qe6 Kd8 22.Re1+-); 18.Nc4?! Nc4 19.Bc4 Ra5+/–; 18.Bc4?! Nc4 19.Nc4 Qa7+=) 18...Nb5 19.Nc4 Qa7 20.Nd6 ed6 21.Bb5 de5 22.Ba6 Qa6 23.Re1 Qa5 24.Ne5 Ne5 25.Be5 Be5 26.Qb2 0-0 27.Re5 Qc7 28.Rae1 Qg7 29.Qb3 Qf7 30.Re7 Qb3 31.ab3 b6 32.Rc7 c5 33.Ree7 Rd8 34.f4 Bf5 35.Rg7 Kf8 36.Rcf7 Ke8 37.Rb7 Kf8 38.Rh7 Kg8 39.Rhc7 Rd1 40.Kf2 Rd8 41.Rb6 Kf8 42.g4 Bg4 43.Rg6 Bd1 44.Rc5 Bb3 45.h4 Bf7 46.Rgg5 Rd7 47.h5 Rd6 48.Kg3 Rf6 49.Rc7 Be8 50.Ra5 Re6 51.Kg4 Kg8 52.Ra8 Kf8 53.Kg5 Rh6 54.Kh6 (54...Kg8 55.Re8#) 1–0. Reuter,Alfred – Smith,Geoff, IECG, 2000.

5.e3 d5 6.Nf3 Bg4 7.Be2 Nf6 8.d3 Nbd7 9.Ne5 Ne5 10.Be5 Be2 11.Qe2 e6 12.a3 Be7 13.0-0 0-0 14.Bb2 Qb6 15.Ra2 Ra6 16.Nc3 Rfa8 17.Rfa1 Qc7 18.Nb1 Bd6 19.h3 Qe7 20.Qd1 b5 21.c3 Nd7 22.Qc2 Ra4 23.Bc1 Qf6 24.d4 Qe7 25.Qb3 Nb6 26.Nd2 Nc4 27.Nc4 bc4 28.Qb2 Rb8 29.Qc2 Rb3 30.Rb1 Qb7 31.Rba1 Qa7 32.Bb2 Qa5 33.Qc1 c5 34.f4 cd4 35.ed4 Qd8 36.g3 Qf6 37.Qc2 Qg6 38.Qg6=+ hg6 39.Kf2 Kh7 40.Ke3 g5 41.Kf3 gf4 42.gf4 Kg6 43.Kg4 f5 44.Kf3 Kf6 45.h4 Bc7 46.Ke3 (46...g6 47.Re1-/+) -/+. Tagirov,Kajum – Malin,Denis (2155), RUS–ch sf Ufa, 1999.

5.e3 e6 6.Bc3 Ra8 7.f4 Nf6 8.Nf3 Nbd7 9.Qc2 Be7 10.Be5 0-0 11.Nc3 Ne8 12.Ne2 f6 13.Bb2 Nc5 14.Ng3 Na4 15.Bd3 Nb2 16.Qb2 f5 17.0-0 Ra3 18.Ne5 Qa5 19.Rfc1 Ra4 20.Qc2 Bb4 21.Nf1 Nf6 22.cd5 Nd5 23.g4 (23.Bc4 Ra3=) 23...g6 (23...Ba3 24.Rcb1 Nb4 25.Qc3 Nd3 26.Qd3 fg4 27.Qc2-/+) 24.h4? (24.gf5 ef5 25.Bc4 Ba3=) 24...Bd6 (better is 24...Ba3 25.Rcb1 Nb4-/+) 25.Nc4= Rc4 26.Bc4 fg4 27.Qd1 e5 (27...Ba3 28.Rcb1= (28.Qg4 e5 29.Qg5 Bc1 30.Rc1 ef4=+)) 28.e4 Bc5 29.Kh1 ef4 (better is 29...Bd4!? 30.Rab1 Qd8= (< 30...Rf4 31.ed5 b5 32.Bd3+/–)) 30.ed5+/– Qd8 31.dc6 Kh8 32.d4 (32.Nh2!?+/–) 32...Qh4 (32...Bd4 33.Rc2 bc6=) 33.Kg1?? (better is 33.Nh2 Be7 34.Qe1+/–) 33...f3-+ 34.Rc2 f2 35.Rf2 Qf2 36.Kh1 Bd4 37.Nh2 g3 38.Qg1 Qg1 39.Rg1 Bg1 40.Nf1 Bf2 41.c7 (41.Kg2 bc6 42.Ng3 Rf4-+) 0–1. Palmi,Herbert – Lettl,Gerhard, Niederbayern–chA, 1999.

5.e3 e6 6.Nf3 dc4 7.Bc4 b5 8.Be2 =.

5.e3 e6 6.Nf3 f5 7.Be2 (7.Bc3 Ra7+=) 7...Nd7 8.h4 (8.0-0 dc4 9.Bc4 Nb6+=) 8...Ngf6 9.d4 Bb4 10.Kf1 (10.Bc3 Bc3 11.Nc3 dc4 12.Bc4 Nb6=) 10...0-0 (10...dc4 11.a3 Bd6 12.Bc4=+) 11.c5 (11.Qb3 Be7=) 11...Ra7 (11...b6 12.a3 Bc5 13.dc5 Nc5 14.Bc3+/–) 12.Bc3 Bc3 13.Nc3 ½–½. Labahn,Wolfgang – Ilgner,A, Neustadt, 1988.

5.e3 Nf6 6.Bc3 Ra8 7.Nf3 e6 8.Be2 Be7 0–1. Tejler – Steche, corr SOK–89–33.

5.e3 Nf6 6.Nf3 Bg4 7.h3 Bf3 8.Qf3 dc4 9.Bc4 e6 10.Nc3 Ba3 11.Rb1 b5 12.Bb3 b4 13.Ba3 bc3 14.Bc1 Qd3 15.Ra1 Ne4 16.Qe2 Qe2 17.Ke2 cd2 18.Bd2 Nd2 19.Kd2 Ke7 20.Rhc1 Rc8 21.Ke2 Nd7 22.Rab1 c5 23.Bc4 Ne5 24.Rb7 Kd6 25.Bb3 Kc6 26.Rb4 Rca8 27.a4 h6 28.g3 Nd7 29.Rf4 Rb8 30.Rc3 Nf6 31.Rd3 Ra7 32.Rc4 Nd5 33.h4 h5 34.g4 Rab7 35.Bc2 Rb2 36.Kd2 Ra2 37.gh5 Rbb2 38.Kc1 Nb4 39.Rdc3 Rc2 40.Rc2 Nc2 41.Rc2 Ra4 42.f4 Ra1 43.Kb2 Rg1 44.Kc3 Kd5 45.Kd3 c4 0–1. Dopper – Rosner, email SOK–E007A 1999.

5.e3 Na6 6.Bc3 Rf5 7.g4 Rc5 (7...Ra5 8.Ba5 Qa5 9.Nc3+= d6 10.Bh3 g5 11.Qa4 Qd8 12.Nf3 Bg7 13.d4) 8.d4 Rg5 (8...Ra5 9.Qd2 (9.c5 d5 10.Qd2 Ra4 11.Qc2 Ra5 12.f3 e5 13.g5) 9...Ra4 10.Qc2= Ra5 11.Nf3 Ng4 12.c5 d5 13.Nbd2) 9.f3+= d6 (9...Ra5 10.Nh3+= d5 11.Ba5 Qa5 12.Qd2 Nb4 13.Nc3) 10.Nh3 Ra5 11.Qd2 (11.Nd2 h5 12.g5 Bh3 13.gf6) 11...Ra4 12.Qc2 b5?? (better is 12...Ra5+/– 13.Nd2; 12...Rb4 13.Nd2) 13.cb5+- Ra5 (13...Rb4 14.ba6 Rb8 15.Bd2+-) 14.ba6 Ba6 (14...Ra6 15.Ba6 Ba6 16.Bd2+-) 15.Ba5 Qa5 16.Qc3 Qb6 17.Qb3 Qb3 (17...Qa5 18.Nd2 Bc8 19.Rc1+-) 18.ab3 Bf1 19.Rf1 Nd5 (19...e6 20.Nc3+-) 20.Ra8 (20.Kd2 f6+-) 20...Kd7 21.Kd2 (21.Ra7 Kc8 22.Kd2 h5+-) 21...g6 (21...h5 22.g5+-) 22.Nc3 (better is 22.Ng5 f6 23.Nf7 Rg8+-) 22...Bg7 (22...Nc7 23.Rb8 f6+-) 23.Rh8 Bh8 24.Nd5 (24.Nd5 cd5 25.Ra1+-) 1–0. Hingst,Thomas (2085) – Padilla,Jesus (2130), RSS5E NoEngine–111, 2010.

5.Nf3 d5 6.e3 Bg4 7.d4 e6 8.Nbd2 Qb6 9.Bc3 Ra3 10.Qc2 Bf3 11.gf3 Be7 12.c5 Qc7 13.Bb4 Ra7 14.a3 0-0 15.Bd3 Nbd7 16.f4 Rfa8 17.Ke2 h6 18.Rhg1= Nh5 19.Bg6?? fg6-/+ 20.Qg6 Ndf6 21.Nf3 Qf4?? 22.Ng5?? hg5-+ 23.Rg5 Qe4 24.Qh6 Kf7 25.Rg7 Ng7 26.Rg1 Nf5 27.Qg6 Kf8 28.h4 Nd4 29.Kf1 Qg6 30.Rg6 Nf5 (31.Rg1 Nh4-+) 0–1. Thiele,J – Haase, Sta–Neu, 1991.

5.Nf3 d5 6.e3 Bg4 7.h3 Bh5 8.d4 e6 9.c5 b6 10.Bc3 Ra8 11.cb6 Qb6 12.Be2 Ne4 13.0-0 Nc3 14.Nc3 Qa5 15.Ne5 Bg6 16.Qb3 Bb4 17.Rfc1 Qa3 18.Qa3 Ba3 19.Ng6 Bc1 20.Rc1 (better is 20.Nh8 Bb2 21.Rb1 Bc3 22.Rb3+=) 20...hg6-/+ 21.a4 Kd7 22.e4 f5 23.e5 Rh4 24.Rd1 Na6 25.Kh2 Rhh8 26.f4 Rhb8 27.Rd2 Rb3 28.Na2 Nb4 29.Nb4 Rb4 30.Bd1 c5! 31.dc5 Rf4 32.Rb2 Rc8 33.a5 Rc4 34.a6 R4c5 35.Ba4 Ke7 36.Rb7 R5c7 37.Rb6 Ra7 38.Bc6 d4 39.Kg3 Rac7 40.Rb7 Kd8 41.Rc7 Kc7 42.Bb7 Rd8 43.Kf2 d3 44.Ke1 d2 45.Kd1 Kb6 46.h4 f4 47.Bf3 Ka6 48.Kc2 Kb5 49.Kd1 Kc4 50.Kc2 d1Q! 51.Bd1 Rd1! 52.Kd1 Kd4 53.Ke2 Ke5 54.Kf3 Kf5 55.g4 fg3! 56.Kg3 e5 57.Kf3 e4 58.Ke3 Ke5 59.Kf2 Kf4 60.Ke2 e3 61.Ke1 Kg3 62.Ke2 Kh4 63.Ke3 Kg3 64.Ke2 g5 65.Ke3 g4 66.Ke2 Kg2 67.Ke1 Kh2 68.Kf2 g3 69.Kf3 g2 70.Kg4 g1Q 71.Kh5 Kg3 72.Kg6-+ Kf4 (72...Kf4 73.Kf7 Kf5 74.Ke7 Qc5 75.Kd7 g6 76.Ke8 Ke6 77.Kd8 g5 78.Ke8 Qe7) 0–1. Liszewski,Krzysztof – Matulka,Franciszek, Otwarta Liga Mazowiecka Poland, 2008.

5.Nf3 g6 6.a4 Bg7 7.Nc3 d5 8.e3 0-0 9.d4 Bg4 10.Be2 Nbd7 11.c5 b6 Black gets strong initiative 12.cb6 Qb6 13.Ba3 Re8 14.Rb1= Qc7 15.0-0 Ne4 16.Ne4 de4-/+ 17.Nd2 Be2 18.Qe2 Ra4 19.Ra1 Rea8 20.Nc4 c5-/+ 21.Rfc1 Qa7 22.g3? cd4-+ 23.Bb2 d3 24.Qd2 Bb2 (25.Ra4 Qa4 (25...Bc1 26.Ra7 Ra7 27.Qc1+/–) 26.Nb2 Ne5 27.Rc8 Rc8-+) 0–1. Klomp,C – Daamen,Ferry, Valkenswaard, 1988.

5.c4 Nb4 6.a3 Na6 7.Bc3 Rf5 8.h4 e5 9.Bd3 Rf6 10.Be5 Re6 11.Bd4 c5 12.Bb2 Rb6 13.Qc2 Nc7 14.Nc3 Nf6 15.Rb1 h6 16.Nf3 Be7 17.Na4 Ra6 18.Bf6 gf6 19.Be4 Ra7 20.Nb6 Ra3 21.0-0 Ra7 22.Qb2 Kf8 23.Nc8 Qc8 24.Bb7 Qb7 25.Qb7 Rb7 26.Rb7 Bd8 27.Ra1 Ke8 28.Raa7 Ne6 29.d4 cd4 30.ed4 Nf8 31.d5 Ng6 32.d6 Nf8 33.Rb8 Ne6 34.Nd4 f5 35.Ne6 de6 36.c5 Rg8 37.Rd8 1–0. Maarten – Elton Self, itsyourturn.com, 2001.

5.Be2 Nb4 6.a3 Nd5 7.c4 Nb6 8.Nf3 Na4 9.Bc1 Nf6 10.0-0 Ne4 11.Qc2 d5 12.d3 Nec5 13.cd5 cd5 14.d4 Ne4 15.Bd3 Bf5 16.Nh4 Bd7 17.Be4 de4 18.Qe4 Rb5 19.Qc2 Rh5 20.Nf3 Bb5 21.Re1 e6 22.Bd2 Bd6 23.Rc1 0-0 24.Bb4 Bb4 25.ab4 Nb6 26.Ra5 Qd6 27.Qd2 Rf5 28.Ne5 Be8 29.b5 Rh5 30.Qe2 f6 31.Nf3 Qb4 32.Qa2 Nd5 33.e4 Nf4 34.Rc4 Qd6 35.Nc3 Bd7 36.e5 fe5 37.de5 Qd3 38.Ra8 Ng6 39.Rf8 Nf8 40.Qb3 b6 41.Rd4 Qg6 42.Rd6 Qe8 43.Qc4 Rh6 44.Rb6 Ng6 45.Rd6 Rh5 46.Qd4 Nf8 47.b6 Bc6 48.Nd2 Qa8 49.Rd8 Qa1 50.Nf1 Rf5 51.Qc4 Qb2 52.Qc5 Bb7 53.Ng3 Rf7 54.Rd1 Nd7 55.Qe3 Qa3 56.Rb1 Nc5 57.Qd4 Rd7 58.Qc4 Ba6 59.Qb4 Qb4 60.Rb4 Rb7 61.Nge4 Nd3 62.Rb1 Rb8 63.Ng5 Ne5 64.Ne6 Bd3 65.Re1 Nd7 66.Ng7 Rb6 67.f4 Rc6 68.Nd5 Kg7 69.Re7 Kf8 70.Rd7 Rc1 71.Kf2 Rf1 72.Kg3 Bg6 73.Ne3 Rc1 74.f5 Ke8 75.Rd4 Bf7 76.Rf4 Re1 77.Kf2 Rh1 78.h3 Kd7 79.f6 Kd6 80.Rf3 Rc1 81.g4 Rc5 82.h4 Rc1 83.g5 Rc5 84.Kg3 Rc1 85.Rf5 Re1 86.Kf4 Rb1 87.Kf3 Bh5 88.Kg3 Rb3 89.Kf2 Bf7 90.Ra5 Rb2 91.Kf3 Bh5 92.Kg3 Rb3 93.Kf2 Rb2 94.Kg1 Rb4 95.Nf5 Kc6 96.Ra7 Rb1 97.Kf2 Rb2 98.Ke3 Rb3 99.Ke4 Rb4 100.Nd4 Kc5 101.Rd7 Bg6 102.Ke5 Rb1 103.Ne6 Kc6 104.Rc7 Kb6 105.Rh7 Re1 106.Kd6 Bh7 107.f7 Rd1 108.Ke7 Rf1 109.f8Q Rf8 110.Nf8 Bg8 111.h5 Kc5 112.g6 1–0. Machete99 – guest927, ICC, 2002.

5.Qg4 Nf6 6.Qh4 Qb6 7.Bd4 c5 8.Bc3 Ra2-/+ 9.Bf6?? Ra1-+ 10.Ba1 Qb1 11.Ke2 Qa1 12.Nf3 e6 13.g3 b6 14.Bg2 Qb2 15.c3 Nc7 16.Qf4 Ba6 17.c4 d6 18.Ng5 f6 19.Bc6 Ke7 20.Nh3 Qc2 21.Ra1 Qc4 22.Kf3 Qf4 23.Nf4 g5 24.Nh5 Bh6 25.g4 Rc8 26.Ra6 Na6 27.Bb7 Rb8 28.Ba6 b5 29.Ng3 Rb6 30.Bc8 b4 31.Ne4 b3 32.Nc3 b2 33.Nb1 d5 34.Ke2 Kd8 0–1. jammboy – SIRMO, ChessWorld.net, 2006.

5.Bc3 Ra7 =.

5.c4 Be6 6.cd5 Bd5 7.Nc3 e5 8.Nd5 Qd5 9.Qc2 Nd7 10.e4 Qc5 11.Bc3 Ra3 12.Nf3 Ngf6 13.Bd3 Bd6 14.Bb2 Qc2 15.Bc2 Ra8 16.0-0 0-0 17.Rfd1 Rfe8 18.d4 ed4 19.Bd4 Ne4 20.Bg7 Kg7 21.Be4 Re4 22.Rd6 Nf6 23.Kf1 Rea4 24.Nd4 R4a5 25.a3 Ne4 26.Rd7 Ra3 27.Ra3 Ra3 28.Rb7 c5 29.Ne6 Kf6 30.Nd8 Nd6 31.Rd7 Ra6 ½–½. Woschkat,Karl_Heinz – Rosner,Dirk, Tiger SC, 2000.

5.c4 Nf6 6.Bc3 Ra8=.

5.c4 Nf6 6.d4 Bf5 7.Qb3 (7.Nf3 e6=) 7...Ra6 8.c5 (8.Qb7? Rb6 9.Qa7 Rb2-+) 8...Ra7 (8...b5 9.Nc3=) 9.Nc3 (9.Nf3 Nbd7=) 9...e5 (9...Nbd7 10.Nf3=) 10.Nf3 Nbd7 11.Be2 ed4 (11...Be7 12.0-0=) 12.ed4 Be7 13.h3 (13.0-0 0-0=) 13...0-0 14.a4 (14.0-0 Re8=) 14...Re8 (14...Ne4 15.0-0=) 15.0-0= Ne4 (15...Qa5 16.Bc1=) 16.Ne4 (16.Rfe1 Nc3 17.Bc3 Bf6=) 16...Be4 (16...de4 17.Bc4 Bg6 18.Nh2=) 17.Rfe1= Bf6 18.Nd2 Bg6 19.Bg4 (19.Bc3 Qc7=) 19...Re1 20.Re1 Nf8 21.Bc3 Qa8 Attacking the isolated pawn on a4 22.Ra1 h5 23.Bd1 (23.Bf3 Ne6 24.Qb4 Nf4=) 23...Ne6 24.Nf3 (24.Qb4 Nf4=) 24...Be4=+ 25.Qb4 White intends a5 25...Qb8 (25...Nf4 26.Bd2 Nd3 27.Qc3=) 26.Ne5 Be5 27.de5 (27.Bh5?? Bh2 28.Kh1 Nf4 29.Bf7 Kf7-+) 27...g6 (27...Qf8 28.a5=) 28.a5+= Qf8 The isolani on c5 becomes a target 29.Qb6 Qa8 (29...Ra6 30.Qb7 Nc5 31.Qb2+/–) 30.Bd2+/– Bd3 (30...Qb8 31.Rc1+=) 31.Qb4 Qf8 32.Ra3 (32.Be3 Bb5+/–) 32...Bb5+= (32...Nc5 33.Be3 b6 34.Qb6+-) 33.Bh5 (33.Rc3 Qg7+=) 33...Qc5 (33...gh5 34.Rg3 Kh7 35.Qb1 f5 36.ef6 Kh8+-) 34.Qc5+= Nc5 35.Be3 gh5 36.Bc5 Ra8 37.f4 Kh7 38.Kf2 (38.f5 Re8 39.Re3 Bc4+=) 38...Kg6 (38...h4 39.g4+=) 39.g4 Kh6 40.f5 (40.Ke3 hg4 41.hg4 Bc4+=) 40...Bc4 (40...Re8 41.Be3 Kh7 42.Bd4+=) 41.Kf3+/– Re8 42.Kf4 hg4 43.hg4 Kg7 44.Rh3 Kg8 45.Bf2 (45...Ra8 46.Bh4+-) 1–0. Baer,Werner – Rosner,Dirk, CiF, 2000.

5.c4 Nf6 6.Nf3 Bg4 7.cd5 Nd5 8.Be2 e6 9.0-0 Qb6 10.Qb3 (10.Bc3 Bb4=) 10...Qa7 (10...Qb3 11.ab3 Ra1 12.Ba1=) 11.Bd4 Qa8 (11...Bc5!?+=) 12.h3 Bh5 13.Nc3 Nd7 14.Ne5 (14.Nd5 Rd5 15.e4 Ra5+/-) 14...Ra3? (better 14...Be2!? 15.Ne2 Rb5=) 15.Nd5 ed5 16.Bh5 Rb3 17.ab3 Qb8 18.Nd7 (better 18.Nf7!? Rg8 19.Nh6 g6 20.Ng8 gh5 21.Nf6 Nf6 22.Bf6+/-) 18...Kd7+= 19.Bf7 Qd6 20.Ra7 (20.f4 Qe7 21.Bh5 Qd8+/-) 20...Kc7 21.f4 Qh6?? (21...Qb4 22.Bc3 Qb3 23.Ra8+=) 22.Rfa1?? (better 22.Ra8 Kd7 23.Rb8+-) 22...Bd6= 23.f5 Rf8 (23...Qg5!? 24.Bd5 cd5 25.Rc1 Kb8=) 24.Be6+= g6?? (better 24...Rb8+=) 25.Rf1 (better 25.R1a6! Ba3 26.Bb6 Kd6 A) 27.Ra3?! gf5 28.Rb7 A1) 28...Qe6?? 29.Bc7 (29.Rh7?! Rf7 30.Rh8 Rb7+=) 29...Ke7 30.Be5 Qd7 31.Rd7 Kd7 32.d4+-; A2) 28...Ke6+-; B) 27.Rb7+-) 25...gf5-/+ 26.Bf5 Qg5 27.Bd3 Rf1 28.Kf1 h5 (28...c5 29.Bb2-/+) 29.Ba6=+ Looking at b7 29...c5 30.Rb7 Kc6 31.Bc3 Qf5 32.Ke2 c4 (32...d4 33.Ba5 c4 34.Rb6 Kd7 35.Rd6 Kd6 36.Bb4 Kd7 37.bc4 Qb1 38.Bb5 Kc8-+) 33.b4 (33.bc4 dc4 34.Rg7 Qd3 35.Ke1 Qb1 36.Kf2 Qf5 37.Ke2 Qd3 38.Kf2 Qf5 39.Ke2=) 33...Qd3 (33...Bg3!? 34.Ra7 Kd6-/+) 34.Kf2=+ Qg6 35.b5 Kc5 36.Rd7?? (36.Rg7!? Qf5 37.Ke2=+) 36...Bg3 (better 36...Qf5 37.Ke2 Qd7-+) 37.Kf1?? (better 37.Kf3 h4 38.Bd4 Kb4 39.Bc3 Kb3 40.Rd5 Qf7 41.Ke4 Qe6 42.Re5 Be5 43.Be5-+) 37...Qf5 (37...Qd3 38.Kg1 Qb1) 38.Ke2-+ Qf2 (38...Qd7!? 39.Kd1-+) 39.Kd1 Qf1 40.Kc2 Qd3 (better 40...Qf5 41.Kb2 Qd7 42.Ka3-+) 41.Kb2?? (better 41.Kc1+=) 41...d4 (41...Be5 42.Rc7 Bc7-+) 42.ed4 (42.ed4 Qd4 43.Bd4 Kb4 44.b6 Bf4 45.Rd5 Bd2 46.b7 c3 47.Kc2 Ka4 48.b8Q Ka3 49.Ra5) 1-0. dale70 (2005) - Raskolnikow (2160), Rated Blitz game, lichess.org, 2015.

5.d4 Bf5 6.c4 dc4 7.Bc4 e6 8.Nf3 Nf6 9.Nc3 Nbd7 10.0-0 Be7 11.h3 0-0 12.a3 Qa8 13.Bd3 Bd3 14.Qd3 Ba3 15.Rab1 Bd6 16.e4 Bc7 17.e5 Nd5 18.Ng5 g6 19.h4 Rd8 (19...N7b6 20.Ra1-/+) 20.h5 Nf8 21.hg6 hg6 22.Qf3 Rd7 23.Nge4 Nc3 (better is 23...Nh7=) 24.Nf6 (24.Qc3?! Nh7=) 24...Kg7 25.Bc3 Ra3 26.Nd7 Nd7 27.Ra1 Nb6 28.Qf6 Kg8 29.Qe7 Ra1 30.Ra1 Qb8 31.Ba5 Nd5 32.Bc7 Nc7 (32...Ne7?? 33.Bb8 Kg7 34.Ra7+-) 33.Ra3 Nb5?? (better is 33...Qf8 34.Qc5 Qd8+/–) 34.Rh3+- (34...Qf8 35.Rh8 Kh8 36.Qf8 Kh7 37.Qf7 Kh6 38.Qe6 Nd4 39.Qh3 Kg5 40.Qe3 Kf5 41.Qd4 b5 42.g4 Kg5 43.e6 c5 44.Qe5 Kg4 45.e7 b4 46.e8Q g5 47.Q8e6 Kf3 48.Q5f6) 1–0. Loulou – mladsir, HCL–A1177 playchess.de, 2003.

5.Be2 Nf6 =.

5.Nf3 b5 6.Bc3 Ra4 7.Ne5 =.

5.Nf3 Nf6 6.Be2 e6 7.0-0 Bd6 8.c4 0-0 9.Bc3 Ra7 10.d4 b6 11.Nbd2 Nbd7 12.Qc2 Bb7 13.Bd3 Qc7 14.e4 e5 (14...de4 15.Ne4 Ne4 16.Be4-/+) 15.cd5 (15.Rfe1 ed4 16.Bd4 de4 17.Ne4 Ne4 18.Be4 g6=) 15...cd5 16.de5 Ne5 17.Be5 Be5 18.Ne5 Qe5 19.Nf3 Qf4 (19...Qe6 20.e5 Ne4 21.Rfd1=) 20.e5+= Ne4 21.Qb2 Rfa8 (21...Qh6!?=) 22.Qb6+/- g5 23.Qh6 Ra6? (23...Ba6 24.Rad1+=) 24.Qh5 (better 24.Ba6 Ra6 25.Qh5+-) 24...g4+/- 25.Be4 (25.Ba6!? Ba6 26.Qh4 Bf1 27.Rf1 Ra2 28.Nd4=) 25...de4= 26.Nh4 Rh6 (26...Ra5 27.Qf5 Qf5 28.Nf5 Re5 29.Rfb1 Rf5 30.Rb7=+) 27.Qf5+= Qf5 28.Nf5 Re6 (28...Rh5 29.Ne3 Bc8 30.a4=) 29.Nd6 (29.Rfb1!? Ba6 30.Rb4+/-) 29...Bd5= 30.a4 Re5 31.a5 (better 31.Rfc1=) 31...Ra6-/+ 32.Nb5? (better 32.Nc8-/+) 32...Bc4-+ 33.Nc7 Bf1 34.Kf1 (34.Na6 Ba6 35.Ra4 f5-+) 34...Raa5 35.Ra5 Ra5 36.Ke2 Kf8 (36...Rh5 37.g3-+) 37.Ke3 Ke7 (37...Rc5!? 38.Na8 f5 39.Nb6-+) 38.Ke4 Kd6 (38...Rh5 39.f3-+) 39.Ne8 Ke7 40.Ng7?? (40.Nc7 Rh5 41.Nd5 Kd6 42.Ne3 Rh2 43.f3 gf3 44.Kf3-+) 40...Kf6-+ 41.Nh5?? (41.Ne8 Kg5 42.f4 Kg6 43.Ke3-+) 41...Rh5 42.Kf4 Rh2 43.Kg3 Rh1 44.Kg4 Kg6 45.f4 (45.Kf4 h5 46.g3 Rc1-+) 45...f5 (45...h5 46.Kf3-+) 46.Kg3 (46.Kf3 Rc1-+) 46...Ra1 47.Kf3 Ra4 48.g3 (48.Ke3 Ra3 49.Kd4 Rg3-+) 48...h5 (better 48...Kh5 49.Kg2-+) 49.Kg2 h4! 50.gh4 Kh5 (50...Kh5 51.Kf3 Ra3 52.Ke2 Kh4 53.Kd2 Kg4 54.Kc2 Kf4 55.Kd2 Ke4 56.Kc2 Rd3 57.Kb1 f4 58.Kc2 f3 59.Kb1 f2 60.Kc2 f1Q 61.Kb2 Qe2 62.Kc1 Rd1) 0-1. zembelek (2000) - gner (2120), Rated Blitz game, lichess.org, 2013.

5.Nf3 Bg4 6.Be2 Nd7 7.0-0 e6 8.d3 (8.Nc3 Ngf6=) 8...Ngf6 9.h3 (9.c4 Bd6=) 9...Bh5 (9...Bf3 10.Bf3 Qa8 11.a3=+) 10.Nbd2 (10.Bc3 Ra6=) 10...Bd6 11.c4 0-0 12.d4 (12.cd5 cd5 (< 12...Nd5 13.Nc4+/–) 13.Bc3 Ra3=+) 12...b6=+ 13.g4 (13.Bc3 Ra3 14.Bb2 Ra7=+) 13...Bg6 14.Nh4 Be4 (14...Qa8 15.g5 Ne8 16.cd5 cd5 17.a4=+) 15.f3 (15.g5 Ne8 16.f4 f5=+) 15...Ne8 16.Ng2 (16.fe4 Qh4 17.Rf3 h5 18.ed5 hg4 (18...cd5?! 19.gh5 Qh5 20.Nb3=; 18...ed5?! 19.gh5 Qh5 20.cd5 cd5 21.Nb3=+) 19.hg4 ed5 20.cd5 cd5-/+) 16...Bg6-/+ 17.Bc3 Ra7 18.e4 de4 19.Ne4 Bb8 20.Be1 (20.d5 cd5 21.cd5 Ra3=+) 20...Be4 (20...Nef6!? 21.Bb4 Re8-/+) 21.fe4= Qc7 22.e5 c5 23.a3 (23.Bc3 cd4 24.Bd4 Ne5-/+) 23...cd4 24.Qd4 Qc5 (24...Qe5 25.Qe5 Be5 26.Rd1-/+) 25.Qc5 bc5 (< 25...Nc5 26.Bc3=) 26.Bh4 (26.a4 Be5 27.Ra2 Bd4 28.Kh2 Nd6-/+) 26...Be5 27.Be7 Ba1 (27...Bd4 28.Kh2 Ba1 29.Ra1-/+) 28.Ra1 f6 29.Bf8 Kf8 30.Bd3 (30.Ra2 Nd6-/+) 30...g6 (30...Ne5 31.Be2-+) 31.Kf2 (31.Kf1 Ne5 32.Be2 Nd6-+) 31...Ne5-+ 32.Ke2 (32.Be2 Nd6-+) 32...Nd6 (32...Nd3?! 33.Kd3 Ra4 34.Kc3-/+) 33.Ne3 f5 (< 33...Nd3 34.Kd3 f5 35.a4-/+) 34.gf5 gf5 (< 34...Nd3 35.Kd3 gf5 36.a4-+) 35.a4 Ke7 36.Ra2 Ra5 (37.Kd2 f4-+) 0–1. Haertig,Manfred – Bitter,Klaus_Martin, ESC, 2000.

5.Nf3 Bg4 6.Be2 Nd7 7.0-0 Ngf6 8.d4 e6 9.Nbd2 Bd6 10.c4 0-0 (10...b6 11.h3 Bf3 12.Bf3=) 11.Nb3 Ra7 12.Qc2 (12.c5 Bc7=) 12...Bf3 13.Bf3 Qe7 (13...dc4 14.Qc4 Qc7 15.g3=+) 14.e4 (14.c5!? Bc7 15.a3=) 14...de4=+ 15.Be4 Ne4 16.Qe4 Rfa8 17.Nc1 (17.c5 Bc7=+) 17...Nf6 18.Qd3 Ba3 (18...Qc7 19.Qh3-/+) 19.Rb1=+ Bb2 20.Rb2 Ra3 21.Rb3 Nd7 (21...Rb3 22.Qb3 Ra3 23.Qb2=) 22.Re1 Nb6 (22...b6 23.Qf3 Rb3 24.Nb3-/+) 23.Qc2 (23.d5 Rb3 24.Qb3 Ra6=) 23...Qc7= 24.g3 (24.Ra3 Ra3 25.Nb3 Ra8=) 24...Nd7 25.Qd3 Nf6?? (better 25...R3a4=+) 26.Ra3+- (26.Ra3 Rd8 27.Nb3+-) 1-0. zembelek (2065) - mistrin (2100), Rated Blitz game, lichess.org, 2014.

5.f4 Nf6 6.Nf3 Bg4 7.Be2 e6 (8.0-0 b5=; 7...b5 8.0-0=). Popstein,Sheila – Lielmezs,Girts, TE–2004–P–01711, 2004.

6.Nf3 Nd7 7.0-0 e6 8.Nd4 Bg6 9.f4 c5 10.Nb3 Ra8 11.c4 Ngf6 12.Nc3 h6 13.d4 Qb6 14.cd5 ed5 15.dc5 Bc5 16.Nc5 Qb2 17.Nd7 Nd7 18.Nd5 0-0 19.Rf2 Qa3 20.f5 Bh7 21.Rb1 Nc5 22.Bc4 Ne4 23.Rf4 Nd6 24.Rb3 Qc5 25.Rc3 Qa5 26.f6 Rfd8 27.Bb3 Ne8 28.Qh5 Bg6 29.Qe5 Kh8 30.fg7 Ng7 31.Ra4 Qa4 32.Ba4 Ra4 33.Ne7 Rd1 34.Kf2 Ra2 35.Kg3 Kh7 36.Ng6 Kg6 37.Rc4 h5 38.Rf4 f5 39.Rd4 Rg1 40.Qd6 Kh7 41.Rd2 Ra6 42.Qd7 Rg6 43.Kh3 Re1 44.Rd3 b6 45.g3 h4 46.Rd6 Re3 47.Kh4 Rd6 48.Qd6 Re4 49.Kh3 b5 50.Kg2 b4 51.h4 Ne8 52.Qd5 Ng7 53.Kf2 Kg6 54.Qb3 Ne6 55.Kg2 Re2 56.Kh3 Re4 57.Qa4 Kg7 58.Qd7 Kg6 59.Qb5 Re3 60.Qe8 Kg7 61.Qe7 Kg6 62.Qb4 f4 63.Qb1 Kf6 64.h5 Rg3 65.Kh4 Ng5 66.Qb6 Ke5 67.Qc7 Kf5 68.Qd7 Ke5 69.Qb5 Kf6 70.Qc6 Kf5 71.Qd5 Kf6 72.Qd6 Kf5 73.Qf8 Ke5 74.Qh8 Kf5 75.Qc8 Kf6 76.Qa6 Kf5 77.Qg6 Ke5 78.Qg7 Kf5 79.Qf8 Ke5 80.Qc5 Kf6 81.Qd4 Kf5 82.Qc5 Kf6 83.Qd4 Kf5 84.Qc5 Kf6 ½–½. Player – REBEL 9.0, 1998.

6.Nf3 Nd7 7.0-0 e6 8.Nd4 Bg6 9.f4 c5 10.Nb3 Ra8 11.c4 Ngf6 12.Nc3 h6 13.d4 Qb6 14.cd5 ed5 15.dc5 Bc5 16.Nc5 Qb2 17.Nd7 Nd7 18.Nd5 0-0 19.Rf2 Qa3 20.f5 Bh7 21.Rb1 Nc5 22.Bc4 Ne4 23.Rf4 Nd6 24.Rb3 Qc5 25.Rc3 Qa5 26.f6 Rfd8 27.Bb3 Ne8 28.Qh5 Bg6 29.Qe5 Kh8 30.fg7 Ng7 31.Ra4 Qa4 32.Ba4 Ra4 33.Ne7 Rd1 34.Kf2 Ra2 35.Kg3 Kh7 36.Ng6 Kg6 37.Rc4 h5 38.Rf4 f5 39.Rd4 Rg1 40.Qd6 Kh7 41.Rd2 Ra6 42.Qd7 Rg6 43.Kh3 Re1 44.Rd3 b6 45.g3 h4 46.Rd6 Re3 47.Kh4 Rd6 48.Qd6 Re4 49.Kh3 b5 50.Kg2 b4 51.h4 Ne6 52.Qd5 Ng7 53.Kf2 Kg6 54.Qb3 Ne6 55.Qa4 Nc5 56.Qc6 Ne6 57.g4 Kf6 58.g5 Ke5 59.Qb5 Kf4 60.Qb7 Kg4 61.g6 Rf4 62.Kg2 Rc4 63.g7 Rc2 64.Kf1 Ng7 65.Qg7 Kh4 66.Qd4 Kg5 67.Qb4 Rh2 68.Qd4 Rh4 69.Qd8 Kg4 70.Kg2 Rh6 71.Qg8 Kh5 72.Kf3 Rg6 73.Qe8 Kg5 74.Qd8 Rf6 75.Ke3 Kg6 76.Qg8 Kh6 77.Kf4 Rb6 78.Kf5 Rb5 79.Kf6 Rb6 80.Ke5 Rb2 81.Kd4 Kh5 82.Kc3 Rf2 83.Qe6 Rf4 84.Kd2 Rf3 85.Qe4 Ra3 86.Kc2 Ra5 87.Kc3 Kg5 88.Kb4 Rf5 89.Qe3 Kf6 90.Kc4 Re5 91.Qh3 Ra5 92.Qd7 Ra2 93.Kd3 Ra3 94.Kd4 Ra1 95.Qd6 Kf5 96.Qd5 Kf6 97.Qe5 Kf7 98.Kc4 Rc1 99.Kd3 Rd1 100.Kc2 Rf1 101.Kd2 Kg6 102.Qe4 Rf5 103.Kd3 Kg5 104.Qg2 Kf6 105.Kd4 Rf4 106.Kc5 Rf5 107.Kd6 Rb5 108.Qf1 Rf5 109.Qd3 Kg5 110.Ke6 Rf8 111.Qg3 Kh6 112.Kd5 Rd8 113.Ke4 Re8 114.Kf5 Rf8 115.Ke6 Kh5 116.Qc3 Kg6 117.Ke7 Rf7 118.Kd6 Rf8 119.Ke6 Re8 120.Kd7 Rf8 121.Qg3 Kh5 122.Kd6 Re8 123.Qf4 Rb8 124.Kc5 Rc8 125.Kb5 Rg8 ½–½. NN – COMP, 10'/game, 1998.

5.Nf3 Nf6 6.d4 Bb4 7.c3 Be7 8.Bd3 0-0 9.0-0 d6 10.c4 b6 11.Bc3 Ra8 12.Nbd2 Nbd7 13.Qc2 Ba6 14.Rfe1 c5 15.e4 cd4 16.Nd4 Bb7 17.N4b3 Ne5 18.Be5 de5 19.Rad1 Qd6 20.Nf3 Rfd8 21.Be2 Be4 22.Rd6 Bc2 23.Rb6 e4 24.Nfd4 Bb3 25.Nb3 Ra2 26.Bf1 Rc2 27.Rb7 Rc3 28.Rc1 Rc1 29.Nc1 Bd6 30.h3 g6 31.Rb5 Rb8 32.Rb8 Bb8 33.c5 Ba7 34.c6 Nd5 35.Nb3 h5 36.Na5 e3 37.fe3 Be3 38.Kh1 Bf4 39.Bc4 Ne7 40.Bb5 g5 41.Nb7 g4 42.hg4 hg4 43.Nc5 Bd6 44.Na6 Nd5 45.Kg1 e5 46.Kf2 e4 47.Ke1 Bf4 48.Be2 g3 49.Bc4 Nb6 50.c7?? Bc7-+ 51.Bf7 Kf7 52.Nc7 Kf6 53.Nb5 Nd5 54.Nd4 Nf4 55.Kf1 e3 56.Ne2=+ Nh5 57.Nc3 Ng7 58.Nd5 Kf5 59.Ne3 Ke4 60.Ke2 Ne6 61.Nf1 Nd4 62.Ke1 Kf4 63.Kd2 Nb5 64.Ne3 Nc3 ½–½. Bonetti,Shane – MacChess 5.0, 2000.

5.Nf3 Nf6 6.Be2 Be7 7.0-0 0-0 8.d4 d5 9.c4 Nbd7 10.c5 b6 11.Bc3 Ra7 12.cb6 Qb6 13.a4 Ba6 14.Ba6 Ra6 15.Bd2 c5 16.dc5 Nc5 17.Nc3 Nfe4 18.Ne5 Nc3 19.Bc3 Bf6 20.Rb1 Qa7 21.f4 Ra4 22.Bd4 Ra5 23.Nc6 Bd4 24.Na7 Ra7 25.ed4 Ne4 26.Ra1 Rb7 27.Qc2 g6 28.Rfb1 Rd7 29.Rb6 Kg7 30.g4 Rh8 31.Qc6 Rdd8 32.Rb7 h5 33.Qe6 Rdf8 34.Qe5 Kg8 35.Qd5 Nd2 36.g5 h4 37.h3 Kg7 38.Qe5 Kg8 39.Qe2 f6 40.Qd2 fg5 41.fg5 Rh5 42.d5 Rd8 43.d6 Kf8 44.Qf4 Kg8 45.Qf7 Kh8 46.Qg7 1–0. popovicigelu – pobeditell, kurnik, 2012.

5.f4 Nf6 6.Nf3 Be7 7.Be2 0-0 8.0-0 Ne8 9.Nc3 Bf6 10.Rb1 Bc3 11.Bc3 Ra2 12.Ra1 Ra1 13.Qa1 b5 14.Ba5 Nc7 15.Rb1 Nba6 16.Ne5 Qe7 17.c4 bc4 18.Bc4 Qd6 19.Bc3 f6 20.Ng4 Qc5 21.Bb3 Nd5 22.Bb2 Nf4 23.Ba3= Ne2 24.Kf2 Qf5=+ 25.Ke2 Qg4-+ 26.Kf2 Re8 27.Bd6 Qf5 28.Kg1 Qd3 29.Bf4 Qd2 30.Rd1 Qb4 31.Bc2 Nc5 32.Rb1 Qc4-+ 33.Rc1 Qb4?? 34.Rb1 Qc4?? 35.Rc1 Qb4?? 36.Rb1= ½–½. Meybohm,Dirk – Wenke, 1990.

5.c4 d5 6.Nf3 Bg4 7.cd5 Qd5 8.Nc3 Qd8 9.Be2 e6 10.0-0 Be7 11.h3 Bf3 12.Bf3 0-0 13.Ne4 Ne4 14.Be4 Rb5 15.Bc3 Bf6 (15...f5 16.a4 Rb6 17.a5+=) 16.Bf6 (16.d4!?+-) 16...Qf6+= 17.a4 Rb4 18.d4 e5 19.Qd2 Qe7 20.Rfb1 Rb1 21.Rb1 ed4 22.Qd4 Rd8? (22...Na6 23.a5+=) 23.Qb4 (23.Rb7 Qe8 24.Qc4 h6+-) 23...c5? (better 23...Qb4!? 24.Rb4 Rd7+=) 24.Qb7+- Qe5 (24...Qe8 25.a5 c4 26.Rc1+-) 25.Bd5 Rf8 (25...Kh8 26.Qf7 h6 27.e4+-) 26.e4 (better 26.Bf7 Kh8 27.Bc4+-) 26...Nd7?? (26...Kh8+-) 27.Qd7 Qd4 (27...h6 28.Rc1+-) 28.a5 (28.Qf7! Rf7 29.Rb8) 28...Qa4 (28...Kh8 29.Qf7! Rd8+-) 29.Qa4 (29.Qa4 h6 30.a6+-; 29.Qf7! Rf7 30.Rb8 Qe8 31.Re8) 1–0. RichardSommer (2120) – Serdukov (2205), lichess.org, 2020.

5.c4 e6 6.Nf3 Be7 7.Be2 0-0 8.0-0 d5 9.Nc3 Nbd7 10.cd5 Nd5 11.Nd5 ed5 12.Qc2 Bf6 13.Bf6 Qf6 14.Rab1 (14.d4 Re8+=) 14...Ne5 (14...b6 15.Rfc1=) 15.d4 (15.Ne5 Qe5 16.d4 Bf5+=) 15...Nf3= 16.Bf3 Bf5 17.e4 Be4 18.Be4 de4 19.Qe4 Ra2 20.Rb7 Ra6 21.h3 g6 22.Rc1 Rfa8 23.Rc7 The pressure on the isolated pawn grows 23...Ra1 (better 23...Ra2 24.f4 Rd8=) 24.Ra1?? (better 24.R7c6 Rc1 25.Rc1+-) 24...Ra1=+ 25.Kh2 Qd6 (better 25...Qf2!? 26.Qe5 Qg1 27.Kg3 Ra3 28.Kh4 Ra8=+) 26.Qe5+= Qe5 27.de5 Ra6 28.f4 Kf8 29.g3 Ke8 30.Kg2 h5 31.Kf3 (31.g4 Ra4 32.Kg3 Rc4+=) 31...Ra3= 32.Ke4 (32.Kf2!?=) 32...Rg3=+ 33.Rc6 Rh3 34.Rf6 Rh1 35.Kf3 Rf1 36.Kg3 Kf8 (36...Rg1 37.Kf3-/+) 37.Kg2 (37.e6!?=) 37...Re1-/+ 38.Kg3 Kg7 39.Rb6 Re3 40.Kg2? (40.Kf2 Rd3-/+) 40...Re2?? (better 40...g5-+) 41.Kf3=+ Re1 (41...Ra2 42.Rb7=+) 42.Rb7 (better 42.Kg3!?=) 42...Rf1 43.Kg2? (better 43.Kg3 g5 44.fg5-/+) 43...Re1?? (better 43...Rf4 44.Ra7 g5-+) 44.Kg3 (44.Kf3!?=) 44...Re2 45.Kf3 Re1 (45...Ra2 46.Ke3-/+) 46.Kg3 Re2 (46...g5 47.fg5 Re5 48.Kf4-/+) 47.Rc7 (47.Kf3 Ra2-/+) 47...Re1 (47...g5 48.fg5 Kg6-/+) 48.Kg2?? (48.Rb7 g5 49.fg5 Kg6-/+) 48...Re2?? (better 48...g5!?-+) 49.Kf3 (49.Kg3 g5 50.fg5 Re5-/+) 49...Re1 (49...Ra2 50.Rb7-/+) 50.Kf2 (50.Rb7!?=) 50...Re4 51.Kf3 Re1 (51...Ra4 52.Rb7=+) 52.Ra7 (better 52.Rb7!?=) 52...Rd1 53.Rf7?? (53.Rf7 Kf7 54.Ke2-+; better 53.Ke2 Rb1 54.Kf3-/+). RichardSommer (2095) – Gehaktbalmetjus (2010), lichess.org, 2020.

5.Nf3 d5 6.c4 Nbd7 7.Bc3 Ra8 8.d4 Ne4 9.cd5 cd5 10.Bd3 e6 11.0-0 Bd6 12.a4 0-0 13.Qc2 f5 14.a5 Nc3 15.Nc3 Ra5 16.Nb5 Be7 (better is 16...Bb8!?=+) 17.Ra5 Qa5 18.Rc1 Rd8 19.Qb2 b6 20.Ra1 Qb4 21.Qc2 Bf6 22.Qc6 Nf8 23.Qb6 (23.Bf1 Bd7 24.Qb6 Rc8=) 23...Bd7 (23...Ng6 24.Ra8 Qe7 25.Na7+=) 24.Rb1 (24.Ne5 Qb2 25.Rd1 Be5 26.Qd8 Qb3+-) 24...Qe7 (24...Qa4 25.Ne5+=) 25.Nc7 Ng6 26.Bb5 Kf7 27.Ra1 (27.Bd7 Rd7 28.Rc1 e5+=) 27...Bb5 (27...Rc8!? 28.Ba6 Rf8=) 28.Nb5+= Rd7 29.Ra6 f4 (29...Rd8 30.h3+/–) 30.Qc6 fe3 31.fe3 h6 (31...Nh4 32.Nh4 Bh4 33.e4+/–) 32.Qc2 (32.Rb6 Kg8+/–) 32...e5 33.Qf5 ed4 34.ed4 Qe3 35.Kh1 Qc1 36.Ng1 Nf8 37.Nd6 Kg8 38.Qd5 Kh7 39.Ra8 Bd8 40.Qf5 Kg8 41.Nb7 Qg5 42.Qg5 Bg5 43.Nc5 Rd6 44.Nf3 Be3 45.Re8 Bc1 46.Ne5 Rf6 47.g4 Bd2 (47...Rf2+-) 48.Ne4 Rf1 49.Kg2 Rd1 50.d5 Bb4 51.Nc6 Ba3 52.Ra8 Bc1 (52...Rd3 53.h3+-) 53.Ne7 Kf7 (54.Ra7 Bb2+-) +-. orane (1995) – shaunarose, Live Game Caissa's Web, 2004.

5.Nf3 d5 6.c4 Bg4 7.cd5 (7.Bc3 Ra8=) 7...Bf3 (7...Nd5 8.Be2=) 8.Qf3 Qd5 (8...Nd5 9.Be2=) 9.Qd5 (9.Qg3 Qd8=) 9...Nd5 10.Be2 Nb4=+ 11.Na3 Ra3!-/+ 12.Ba3 Nc2 13.Kd1 Na1 14.Kc1 e6 15.Bf8 Kf8 16.Kb2 Ke7 17.Ra1 Rd8 18.d4 Nd7 19.Rb1 Kd6 20.Kc3 Kc7 21.Rd1 Ra8 22.Rd2 Nf6 23.Bf3 g5 24.h3 h5 25.g4 h4 26.e4?? Ra3-+ (27.Kc2 Rf3-+) 0–1. Krickemeyer,Horst – Spaete,Erwin (1715), 12sen.Woerishofen, 1996.

5.Nf3 d5 6.Be2 b5 =.

5.Nf3 d6 6.d4 Bd7 7.Be2 e6 8.0-0 Be7 9.Nbd2 0-0 10.Nb3 Ra8 11.c4 c5 12.a3 Nc6 13.Nfd2 b6 14.Bc3 Qc7 15.Qc2 Rfc8 16.Rfc1 Qd8 17.Bf3 Qc7 18.d5 Ne5 (18...ed5 19.cd5 Nd8 20.Qb2=) 19.de6 (better is 19.Be5 de5 20.de6 Be6 21.Ba8 Ra8 22.Rd1+/–) 19...Nf3= 20.Nf3 Be6 21.Bb2 d5 22.cd5 Bd5 23.Nbd2 c4 24.Bc3 Ba3 25.Bf6? (better is 25.Rcb1-/+) 25...g6?? (better is 25...Bc1 26.Ra8 Ra8 (26...Ba8?! 27.Be5 Qd8 28.Qc1=+) 27.Qc1 Bf3 28.Nf3 gf6-+) 26.Be5 Qd8 27.Rd1 Qe7 28.Rab1 Bb4 29.Ra1?? (better is 29.Bc3 Bc3 30.Qc3+-) 29...Bd2 (29...Ba3 30.Rdb1 c3 31.Bc3 Qc7+-) 30.Qd2?? (better is 30.e4 Bf4 31.Ra8 (31.ed5?! Be5 32.Ra8 Ra8+=) 31...Ba8 32.Bf4 Qe4 33.Qc1+/–) 30...Bf3-+ 31.gf3 Qe5 32.Ra8 Qg5 33.Kh1 Ra8 34.Qb4 b5 35.e4 Qf4 (35...Ra2 36.f4 Qh4-+) 36.Qb5?? (better is 36.Kg2-/+) 36...Qf3 37.Kg1 Qd1 38.Kg2 Qg4 39.Kf1 Ra1 40.Qb1 Rb1 0–1. Bonetti,Shane – MacChess 5.0, 2000.

5.Nf3 Ne4 6.Nc3 d5 7.Bd3 Bh3?? (better is 7...Nd6+=) 8.gh3+– Ng5 (8...Nc5+–) 9.Ng5 d4 (9...Nd7 10.Qg4 Ne5 11.Qg3 Nd3 12.cd3+–) 10.Nce4 de3 (10...h6 11.Nf3 de3 12.fe3+–) 11.fe3 Qc7 (11...Rf5 12.Bc4 e6 13.Qh5+–) 12.0-0 h6 13.Nf7 Rg8 14.Qg4 Nd7 15.Qg6 Ne5 16.Nfd6 Kd7 17.Nc5! Rc5 (17...Rc5 18.Bf5 Mate attack) 18.Bf5 e6 19.Qe6 Kd8 20.Qe8 1–0. usingprogram (2035) – gruniu, kurnik, 2011.

5.Nf3 e6 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.c5 b6 11.cb6 Qb6 12.Bc3 Ra8 13.Nbd2 Ba6 14.Ba6 (14.a4 Rfc8=) 14...Ra6 15.Nb3 (15.a4 c5=) 15...Rfa8=+ 16.Qe2 Ne4 17.Bb2 (better 17.Rfc1!?=+) 17...Ra2-+ 18.Nc5? (better 18.Qc2!?-+) 18...Ndc5 19.dc5 Qb8 (19...Nc5 20.Qc2-+) 20.Rab1 (20.Ne5 Qb7-+ (20...Rb2?! 21.Ra8 Qa8 22.Qb2=; 20...Nc5?! 21.Nc6 Qb7 22.Ne7 Qe7 23.Qg4-/+)) 20...Qf8 (20...Nc3! 21.Bc3 Qb1 22.Rb1 Re2 23.Bd2-+) 21.Qd3 (21.Rfc1 Bc5 22.Rc2 Bb4-+) 21...Nc5 22.Qc3 (22.Qd1 Qe8-+) 22...Na4 (22...Bf6!? 23.Qb4 Rb8 24.Qb8 Qb8 25.Bf6-+) 23.Qb3 Nb2 24.Rb2 Rb2 (24...R2a7 25.Qc2 Bf6 26.Rb6-+) 25.Qb2 Bf6 26.Qc2 c5 27.h3 (27.e4 Ra3-+) 27...g6 (27...c4 28.Rb1-+) 28.h4 (28.e4 Qd6-+) 28...h5 (28...c4 29.e4-+) 29.g3 (29.e4 Qd6-+) 29...c4 30.Kg2 Ra1 31.Ra1 Ba1 32.Ng5 Bf6 33.Nh3 (33.Ne6 fe6 34.Qg6 Bg7 35.Qe6 Qf7-+) 33...Qb4 Black prepares the advance c3 34.Nf4 Kg7 35.Qe2 (35.Qd1 c3 36.Qe1 Qb3-+) 35...Qb1 36.g4 (36.Qf1 Qe4 37.Kh2 c3-+) 36...c3 37.gh5 (37.g5 Be5 38.Nd3 c2-+) 37...c2 38.hg6 (38.Nd3 Qd1 39.Qf3 gh5 40.e4 Bh4 41.ed5 ed5 42.Qe3-+) 38...c1Q 39.Nh5 Kg6 (39...Kh6 40.Qf1 Qf1 41.Kg3 Qg6 42.Kf3 Qd1 43.Kf4 Qgg4) 40.Qg4 Kh6 (40...Kh6 41.Ng3 Qg1 42.Kh3 Qf2 43.Qf4 Qf4 44.ef4 d4-+) 0-1. Md.,Jamal Uddin (2060) - Robles Aguilar,Enrique Alfonso, Titled Tuesday, 2020.

5.Nf3 e6 6.Be2 Be7 (6...d5 7.0-0=) 7.0-0 (7.c4 d5=) 7...0-0 (7...d5 8.Bc3 Ra8 9.Ne5=) 8.c4 d5 9.Bc3 (9.d3 dc4 10.dc4 Qc7=) 9...Ra7 10.Qc2 Na6 (10...dc4 11.Bc4 Nbd7 12.d4=) 11.Bd3 (11.d3 b6=) 11...Nb4=+ 12.Bb4 Bb4 13.Nc3 (better is 13.Be2=+) 13...c5 (13...Bd6 14.c5 Bc5 15.Nb5 Be3 16.Na7 Ba7 17.Rfe1=+) 14.cd5 (14.Nb5!? Ra8 15.cd5+=) 14...ed5= 15.Bf5 (15.Nb5 Ra5 16.Rfb1 Bd7=) 15...Bf5 (15...Qe7 16.Bc8 Rc8 17.Rfb1=+) 16.Qf5 d4 (16...Bc3 17.dc3 Qe7 18.Qc2=+) 17.Nb5 (better is 17.ed4!? cd4 18.Nb5+=) 17...Ra5=+ 18.a4 de3 (18...d3 19.Rfb1=+) 19.fe3 (19.de3 Qe7=) 19...h6 (19...Qe7 20.Qe5 Re8 21.Qe7 Re7 22.Rfc1=+) 20.Ne5 Qe7 (20...Qd5 21.Qf4 Bd2 22.Nc7=) 21.Nc4 Ra6 22.Rf3 Rd8 23.Rg3? Bd2 24.Qh3 Kh7 25.Qf5 g6 26.Qf2? Bb4?? 27.Rh3 Ne4-+ 28.Qf3? Rf6 29.Qg3 Nd2 30.Qh4 h5 31.Ncd6?? Rdd6 32.Nd6 Qd6 33.Qg5 Qe6 34.Rd1 Bc3 (35.Rh4 Qa6 36.Rh5 gh5 37.Qh5 Kg7 38.Qg5 Rg6-+; better is 34...Rf5 35.Qg3 Qa6 36.Qe1-+) 0–1. FRAYBENTOS (2025) – Eralos (2055), ajedrez.educared.net, 2006.

5.ed5 Qd5 6.a3 Bf5 =.

5.ed5 Qd5 6.Nc3 Qe6 7.Nge2 =.

5.e5 d4 6.Nf3 Bg4 7.e6 fe6 8.Be2 Bf3 9.Bf3 =.

5.e5 Nd7 6.e6 fe6 7.Qh5 g6=+ 8.Qg5 Ngf6 9.c4? Bg7 10.Nf3 dc4 11.Bc4?? Rg5 12.Ng5 Nd5 13.Bg7-/+ Rg8 14.Bh6?? N7b6 15.Bb3 Qc7 16.0-0-/+ Nf4 17.g3 Attacking the isolated pawn on e6 17...Ne2-/+ 18.Kg2 Qe5 19.d4? Nd4-+ 20.Re1?? Qe1 21.Nh3 Qe4 22.Kf1 Qe2 23.Kg1 Qh5 24.Be3 Nf3 25.Kg2 Ne1 26.Kf1 Qh3 27.Ke1 Nd5 28.Bd4 Qh2 29.Nd2 Rf8 30.Ne4 e5 31.Be5 Bf5 32.f3 Be4 33.fe4 Rf2 34.Bc4 Qg1 (35.Bf1 Qf1#) 0–1. rabelloenter (1960) – tomassic (1850), net–chess.com, 2006.

6.Nf3 Nc6 7.a4 Bg4 8.Bb5 e6 9.h3 Bh5 10.0-0 Nf6 11.Bc3 Ra8 12.Re1 Bc5 13.g4 Bg6 14.d4 Bd6 15.Ne5 Be5 16.de5 Ne4 17.Re3 h5 18.f3 Nc3 19.Rc3 Qb6 20.Kg2 hg4 21.fg4 Be4 22.Kf1 0-0 23.Bc6 f6 24.Ke2 fe5 25.Qe1 bc6 26.Nd2 Rf4 27.Qg3 Raf8 28.Raa3 Rf2 29.Kd1 Rg2 30.Qg2 Bg2 31.Kc1 Qf2 32.Nb3 d4 33.Rd3 Be4 34.Rd2 Qe1 35.Kb2 Rf3 36.g5 Rb3 37.Rb3 Qd2 38.Rb8 Kh7 39.g6 Kg6 40.Rb3 Qc2 41.Ka3 c5 42.Rb2 Qc3 43.Ka2 Bd5 44.Kb1 Qe1 45.Kc2 Be4 46.Kb3 Qb4 47.Ka2 Qa4# 0–1. NN – COMP, 1998.

6.Nf3 Nc6 7.a4 Bg4 8.Bb5 e6 9.h3 Bh5 10.0-0 Nf6 11.Bc3 Ra8 12.Re1 Bc5 13.g4 Bg6 14.d4 Bd6 15.Ne5 Be5 16.de5 Ne4 17.Re3 h5 18.f3 Nc3 19.Rc3 Qb6 20.Kg2 hg4 21.fg4 Be4 22.Kf1 0-0 23.Bc6 f6 24.Ke2 fe5 25.Qe1 bc6 26.Nd2 Rf4 27.Qg3 Raf8 28.Raa3 Rf2 29.Kd1 Rg2 30.Qg2 Bg2 31.Kc1 Qf2 32.Nb3 d4 33.Rd3 Be4 34.Rd2 Qe1 35.Kb2 Rf3 36.h4 Rb3 37.Rb3 Qd2 38.Rb8 Kh7 39.g5 Qc2 40.Ka3 Bd5 41.g6 Kh6 42.a5 c5 43.Rb2 Qd3 44.Ka4 Bc6 45.Rb5 Bb5# 0–1. COMP – COMP, 1998.

6.Nf3 Nf6 7.Bc3 Ra8 8.Ne5 e6 9.Bb5 Bd7 10.Nd7 Nbd7 11.0-0 Bd6 12.Bd7 Qd7 13.Bf6 gf6 14.Re1 Qc6 15.Qf3 Be5 16.c3 Qd6 17.h3 Rg8 18.a4 Kf8 19.Qh5 Rg7 20.a5 Qc7 21.Qh4 f5 22.Qb4 Bd6 23.Qb5 Ke7 24.Qd5 Rag8 25.d4 Rg2 26.Qg2 Rg2 27.Kg2 Qc6 28.f3 Bc7 29.Re2 Qd6 30.Kf1 Qg3 31.Nd2 Bf4 32.Rb1 Kf6 33.Rb3 Qh3 34.Ke1 Qg3 35.Kd1 Bd2 36.Kd2 Qf3 37.Re5 h5 38.Rb1 h4 39.Re3 Qd5 40.Ra1 h3 41.Re2 f4 42.Rh2 Kg5 43.Rah1 Kg4 44.Rg1 Kh4 45.Rgh1 Qf3 46.c4 Qe3 47.Kc2 Qd4 48.Rh3 Kg4 49.Rh4 Kf5 50.Kb3 e5 51.Rh7 Ke6 52.R1h6 f6 53.Rh1 f3 54.Rb7 f2 55.a6 Qe4 56.Ra1 Qe1 57.Rb6 Kf5 58.Re1 fe1Q 59.Ka4 Qd1 60.Kb5 Qd7 61.Rc6 e4 62.Kb6 e3 63.a7 Qd8 64.Kb7 e2 65.a8Q Qa8 66.Ka8 e1Q 67.Kb7 Qb4 68.Kc7 Ke5 69.c5 f5 70.Kd7 Qb7 71.Rc7 Qd5 72.Kc8 Qa8 73.Kd7 Kd5 74.Ke7 Qc6 75.Rd7 Qd7 76.Kd7 Kc5 77.Ke6 f4 0–1. E Andersson – Rosner, Tiger–CS 1999.

6.Nf3 Nf6 7.Be2 Nc6 8.0-0 e6 9.a4 Bb4 10.Bb5 0-0 11.c4 Bd7 12.d3 dc4 13.dc4 Qc7 14.Bf6 gf6 15.Nbd2 Rd8 16.Qe2 e5 17.Ne4 Be7 18.Nc3 Be6 19.Rad1 Na7 ½–½. Woischke,Norbert – Rosner,Dirk, CiF, 2000.

6.Nf3 Nf6 7.Be2 Ne4 8.d3+= Nc5 9.d4 Ne4 10.Nbd2 Nc6 11.0-0 Qb6 12.Nb3 Ra4 13.Bd3 Bg4 The pressure on d4 grows 14.c4+= Ng5 15.cd5 Bf3 16.gf3 Nb4 17.Bc1 Nd3 18.Qd3 (< 18.Bg5 Qg6 19.Kh1 Qg5 20.Qd3 Qd5=+) ½–½. Woschkat,Karl_Heinz – Rosner,Dirk, CiF, 2001.

5.Bc3 Ra4 +=.

5.c4 Nc5 6.Bc3 Ra6 7.d4 Ne4 8.Bb4 (8.e3 d6=) 8...d5 9.cd5 (9.e3 Rb6 10.a3 Ngf6=) 9...cd5 (9...Qd5 10.Nbd2=) 10.e3 Qb6 11.Bd2 Ra8 12.Nc3 Nc3 13.Bc3 Nf6 14.Bd3 Bg4 15.h3 (15.Rb1 Qc6 16.Bb5 Ra2 17.Bc6 bc6 18.Rb8 Kd7 19.Ne5 Kd6 20.Ng4 Nd7+-) 15...Bf3 (15...Qc6 A) 16.hg4?! Qc3 17.Ke2 A1) < 17...Ng4 18.Qb1+/– (18.Rh7 Rh7 19.Bh7 g6=+); A2) 17...e6=; B) 16.Bb4 e6 17.Bf8 Bf3 B1) 18.Qf3?? Qc3 (18...Rf8 19.0-0+=) 19.Ke2 Qb2 (19...Rf8 20.Rhc1 Ra2 21.Ra2 Qc1 22.Qg3+=) 20.Bc2 Qc2 (20...Rf8 21.Rhc1=+; 20...Kf8 21.Rhc1=) 21.Ke1 Rf8-+; B2) 18.gf3?! Qc3 19.Kf1 Rf8=+; B3) 18.Qd2 Bg2 19.Rc1=+) 16.Qf3+= (16…Ra3 17.Rb1+=). Waibel,Ulrich – Krumm,Heinz, compuserve, 1995.

5.e3 Nc5 6.d4 Na4 7.Qc1 Nb2 8.Qb2 d5 9.c4 e6 10.c5 Nf6 11.Nc3 g6 12.Bd3 Bg7 13.0-0 0-0 14.Ne5 Nd7 Black fights for the Initiative 15.f4 f6 16.Nd7+= Qd7 17.Qb6 Ra3 18.Rfc1 e5= 19.fe5? fe5 20.Qb4 Ra8 21.Na4 Qg4 22.Nb6 Rb8 23.h3?? Qg5-+ 24.Bf1 Bh3 25.Rd1 Rf1! 26.Kf1 Decoy to f1 Qg2 27.Ke1 Rf8 (28.Nd5 Rf1#) 0–1. C_D_B7 – smurilo (1705), chessHere.com, 2006.

5.Bc3 Ra7 6.Bd4 =.

5.d4 Bf5 6.Nc3 e6 7.e3 Bd6 8.h3 Nf6 9.Bd3 0-0 10.0-0 Nbd7 11.Bf5 ef5 12.Qd2 Ne4 13.Ne4 fe4 14.Ng5? h6-+ 15.Ne4 de4 16.c4 b5 17.c5 Bc7 18.Bc3 Ra4 19.f3 Nf6 20.Rad1 Qd5 21.Rf2 Bg3 22.Rff1 ef3 23.Rf3 Ne4 24.Qd3 Ra3 25.Rc1 b4! (26.Ra1 Nc3-+) 0–1. Shakkimestari – pierre, internet, 2006.

5.d4 Bf5 6.e3!? =.

5.d4 Nf6 6.e3 =.

5.e3 e5 6.e4 =.

5.e4 e5 +=.

6.c4 bc4 7.Bc4 d5 +=.

6.d4 d5 +=.

6.Nh4 Nh6 7.d4 =.

7.Bc3 Ra4 8.d4 b4 9.Bb2 Qa5 10.c3 e6 11.Bc4 bc3 12.Bc3+= Qh5?? 13.Qh5 gh5+/– 14.Be2 Ke7 15.Bh5 Nh6 16.0-0 Nf5 17.Nf5+- ef5 18.Nd2 Bh6 19.Rfb1 Na6 20.Be2 Nc7 21.Bb4 d6 22.Nc4 Nb5 23.Na5 Bd7 24.Bd1 (24...Rb4 25.Rb4+-) 1–0. Wall,Bill – YoungGut, Internet, 2003.

7.Bc3 Ra4 8.d4 e5!? =+.

7.Bc3 Ra4 8.Nf3 d5 =.

7.Bc3 Ra4 8.Nf5 e5 9.Ng3 d5 =+.

7.d4 d5 =.

7.d4 e6 =.

5.d3 d5 6.Nbd2 Ra8 7.e3 e6 8.Be2 Be7 9.0-0 0-0 10.Re1 Nbd7 11.e4 de4 12.de4 b6 13.Bd3 White intends e5 13...Re8 14.e5 Nd5 15.Ne4 Nf8 16.Bc1 Bb7 17.Nfg5 h6 18.Nf3 b5 19.Bb2 c5?? (19...Ng6=) 20.h3?? (better 20.Bb5 Nd7 21.c4+-) 20...c4-/+ 21.Bf1 Qc7 22.Nh2 (22.Bd4!?=+) 22...Red8-/+ 23.Qg4 Ng6 24.f4? (better 24.Nc3!? Nc3 25.Bc3-+) 24...Ndf4 25.g3 (25.Nf3 Bb4 26.c3 Be7-+) 25...Nd5 26.Nf6 (26.Nf3-+) 26...Nf6 27.ef6 Qc5 (27...Bc5 28.Bd4 Bd4 29.Qd4 Qg3 30.Bg2 Qg2) 28.Bd4-+ Rd4 29.Re3 Rg4 (better 29...Rd3! 30.Qf3 Re3 31.Kh1 Rf3 32.Bg2-+) 30.Ng4 Bf6 31.Rae1 (31.Rae1 Bd4 32.Bg2 Bg2 33.Kg2-+). alessandrocarvalhaes (1895) – dontbeapatzer (1800), lichess.org, 2020.

5.e3 Na6 6.Be2 Nb4 (6...d5 7.0-0+=) 7.Bc3 (better is 7.a3!? Na6 8.c4+=) 7...Ra2=+ 8.Ra2 (8.0-0 Ra1 9.Ba1 d5=+) 8...Na2 9.0-0 (9.Bb2 d5=+) 9...Ne4 (9...Nc3!? 10.Nc3 d5=+) 10.Bb2= Qb6 (10...d5 11.c4 Nb4 12.d3=) 11.Ba1 (11.Bd4 c5 12.Ba1 Qa5=) 11...Qa5 12.Bd3 (12.c4 d6=) 12...Nb4 (12...d5 13.Bb2=+) 13.Bc3 (13.Be4 Qa1 14.c3 d5 15.Bh7 Rh7 16.cb4 Qf6=+) 13...Nc3-/+ 14.Nc3 d6 (14...Nd3 15.cd3 d5 16.Qc2-/+) 15.Qe2 (15.Be2 e5=+) 15...Bg4 (15...e5 16.Rb1-/+) 16.h3 (16.Rb1 Nd3 17.cd3 b5-/+) 16...Bf3 (16...Bh5 17.Rb1-/+) 17.Qf3=+ Nd5 (better is 17...e6!?=+) 18.Nd5+= cd5 (better is 18...Qd5!? 19.Qd5 cd5+=) 19.Qd5?? (better is 19.Rb1 e6 20.Rb7+-) 19...Qd5-+ (20.Rb1 e6-+) 0–1. wood – carly, Live Game Caissa's Web, 2005.

5.e3 d5 6.c4 Nbd7 7.Bc3 Ra8 8.d4 Ne4 9.cd5 cd5 10.Bd3 e6 11.0-0 Be7 12.Ne5 Ne5 13.de5 Nc3 14.Nc3 0-0 15.Qc2 Bd7 16.Bh7 Kh8 17.Bd3 g6 18.Bg6?? (Better is 18.Qb2+/–) 18...fg6=+ 19.Qg6 Qe8 20.Qh6 Kg8 21.f4 Qf7 22.Rf3 Qg7?? (Better is 22...Qh7 23.Qh7 Kh7=+) 23.Rg3+- (23...Qg3 24.hg3+-) 1–0. Wall,Bill (2365) – Thrawn, Microsoft Gaming Zone, 1999.

5.e3 d5 6.Be2 Bg4 7.0-0 e6 8.d4 Be7 9.Nbd2 0-0 (9...b5 10.Ne5 Be2 11.Qe2=+) 10.c4= Nbd7 11.Bc3 Ra8 12.Qb3 Qb6 (12...b6 13.Bd3=) 13.c5 (13.Bd3 Qb3 14.ab3 b6=) 13...Qb3 14.ab3 (14.Nb3 Ne4 15.Bb2 Ra4=+) 14...b6 (14...Ne4 15.Rac1=+) 15.b4 (15.cb6 Ne4 16.Ba5 Ra5 17.Ra5 Nd2+=) 15...b5 (15...Ne4!? 16.Rac1 Ra3-/+) 16.Rfe1 (16.Bd3 Bf3 17.Nf3 Ne4=) 16...Bf5 (16...Ne4 17.Ne4 de4 18.Ne5 Ra1 19.Ba1 Ne5 20.de5 Be2 21.Re2=) 17.h3 h6 18.g4 Bh7 19.Nh2 (19.Ra5 Ne4 20.Ne4 de4+=) 19...Ne4 (19...Rfb8 20.Nhf3=) 20.Ne4 Be4 21.f3 Bh7 22.Bf1 (22.Ra5 Ra5 23.ba5 e5=) 22...Rfb8 23.e4 (23.Ra8 Ra8 24.Ra1 Ra1 25.Ba1 Bh4=) 23...Bf6 (23...Ra1 24.Ba1 Bg5 25.Bc3=+) 24.Bg2 Kf8 25.Nf1 g5 (25...Ra4 26.ed5 ed5 27.f4=+) 26.Kf2 Bg7 27.Ng3 Re8 28.Nh5 Bh8 29.Kg3 Bg6 30.h4 f5 (30...Ra1 31.Ra1 (worse 31.Ba1 Ra8=+) 31...e5 32.ed5 ed4 33.Bd2+= (worse 33.dc6 Nc5 34.Bd2 Nb3-/+)) 31.ef5 (31.Ra8 Ra8 32.hg5 hg5 33.ef5 ef5=) 31...ef5 (31...Ra1 32.Ra1 ef5 33.Ra6=+) 32.Re8 (32.Ra8!? Ra8 33.Re6 Bh5 34.gh5+=) 32...Re8= 33.hg5 hg5 34.Ra7 f4 35.Kf2 Re7 (35...Re3 36.Bd2 (36.Rd7 Rc3 37.Bf1 Bd4 38.Kg2 Rc2 39.Kh1 Bh5 40.gh5 g4 41.fg4 f3-+) 36...Bd4 37.Be3 fe3 38.Ke2=+) 36.Bf1= Bh5 (36...Nb8!? 37.Ra8 Re8=) 37.gh5+= Nf6 38.Ra8 Kg7? (better 38...Re8!? 39.Ra6 g4 40.Rc6 Re3+=) 39.h6!+/- Kh7 (39...Kh6 40.Rh8 Deflection) 40.Bd3 Kh6 41.Rh8 Kg7 42.Rh1 (42.Rc8!? Re3 43.Rc7 Kh6 44.Rc6 Rd3 45.Rf6 Kg7+-) 42...Re3+/- 43.Rd1 g4 44.fg4 Ng4 45.Kf1 Rf3 (45...Rg3 46.Ke1 Rg1 47.Kd2 Rg2 48.Kc1 f3=) 46.Kg1?? (better 46.Ke2 Rf2 47.Ke1+/-) 46...Rg3-+ 47.Kh1 (47.Kf1 Ne3 48.Ke2 Nd1-+) 47...Nf2 48.Kh2 Nd1 (48...Rd3?! 49.Rd3 Nd3 50.Kg2=; 48...Nd3?! 49.Bd2 Rf3 50.Kg2 Rf2 51.Kg1-+) 49.Bd2 Rd3 50.Bf4 Kg6 51.Be5 Kf5 52.Kg2 Nb2 53.Kf2 Nc4 54.Ke2 (54.Bg7 Ne3-+) 54...Ra3 (better 54...Ne5!? 55.de5 Rd4 56.e6-+) 55.Bh8 Ke4 56.Kf2 Rd3 57.Ke2 (57.Be5 Rb3 58.Bg7 Rb4-+) 57...Ne3 (57...Rd2 58.Kf1 Ne3 59.Kg1 Kf3 60.Be5 Ng4 61.Bg3 Rd1 62.Be1 Re1) 58.Bg7 Nc2 59.Kf2 Nd4 60.Bf6 (60.Bh6 Rb3-+) 60...Nc2 (60...Rf3 61.Kg2 Rf6 62.Kg3 Ne2 63.Kg2 d4 64.Kh3 Rh6 65.Kg4 Rg6 66.Kh4 Kf4 67.Kh3 Ng1 68.Kh2 Nf3 69.Kh3 Rg3) 61.Bg7 (61.Ke2 d4 62.Bg5 Rg3 63.Bh4 Rg2 64.Kd1 d3 65.Bf6 Ne3 66.Kc1 d2 67.Kb2 d1Q 68.Kc3 Qd3) 61...Nb4 62.Bf6 Nc2 63.Be7 b4 64.Ke2 Nd4 65.Kf2 b3 66.Bf6 b2 67.Bd4 (67.Bh4 b1Q 68.Kg2 Ne2 69.Kf2 Re3 70.Bf6 Qg1) 67...Kd4 68.Ke2 (68.Kg2 b1Q 69.Kf2 Qc2 70.Ke1 Rd1) 68…b1Q (68...b1Q 69.Kf2 Qc2 70.Ke1 Rd1) 0-1. zembelek (1985) - andrewrun (2215), Rated Blitz game, lichess.org, 2014.

5.e3 d6 6.c4 e5 7.Be2 Be7 8.d4 e4 9.Nfd2 Rg5 10.g3 0-0 11.Nc3 d5 12.h4 Rg6 13.h5 Rg5 14.h6 Na6 (14...g6!?=) 15.hg7+= Rg7 16.cd5 cd5 17.a3 Bg4 18.Rc1 Be2 19.Ne2 Qd7 20.Qb3 b5 21.Nf4 b4 22.Rh6 Rg5 23.a4 Kg7 24.Rh1 Rc8 25.Rc8 Qc8 26.Qd1 Kg8 27.a5 Bd6 28.Nh5 Ne8 29.Rh4 Rg6 30.Nf4 Bf4 31.Rf4 (worse is 31.gf4 Rg1 32.Nf1 Nf6-/+) 31...Ng7 32.Qa4 h6 33.Kd1 Nf5 34.Qb5 Ne7 35.Qa4 Rd6 36.Rh4 Rc6 37.Qb3 Rg6 38.Rf4 Qe8 39.Ke1 f5 40.f3 ef3 41.Kf2 Kh7 42.Nf3 Qg8 43.Qd1 Rg3 44.Qh1 Rg7 45.Rh4 Qe6 46.Rh5 Qc6 47.Ne5 (better is 47.Ke1!?+=) 47...Qc2-/+ 48.Kf3 Ng8 (48...Qb2?? 49.Rh6 Kg8 50.Rh8) 49.Rh2 Qe4 50.Kf2 Qh1 51.Rh1 Nf6 52.Kf3 Ne4 53.Rh2 Nd6 54.Kf4 Rg1 55.Nd3 Nc4 56.Kf5 Ne3 57.Ke6 Rg6 58.Ke7 Nc4 59.Ne5 Rg7 60.Kf6 Rg1 (60...Na5?! 61.Bc1 Rb7 62.Rh6 Kg8 63.Rg6 Kh7 64.Rh6 Kg8 65.Rg6 Kh7 66.Rh6=) 61.Ke6 Nc7 62.Kd7 Rg7 63.Kc6 Na5 64.Kc5 Nb7 65.Kb4 Rg1 66.Bc3 Ne6 67.Bd2 Nd4 68.Bh6 Kg8 69.Rf2 Rb1 70.Kc3 Ne6 71.Nd7 d4 72.Kc4 Ra1 73.Bd2 Nbd8 74.Ne5 Kg7 75.Kd5 Rb1 76.Kc4 Ra1 77.Kd5 Ra4 78.Rf3 Ra6 (78...Ra7!?-/+) 79.Rg3= Kf6 80.Rf3 Kg7 81.Rg3 Kh8 ½–½. Clay56 – PeterRs, ChessWorld.net, 2013.

5.e3 d6 6.d4 =.

4.a3 Nf6 5.Nf3 Ra5 6.e3 e6 =.

4.a4 Nf6 5.Nf3 e6 6.Bc3 Ne4 =+.

4.a6 Na6 5.Nf3 Bg4 6.Ne5 Bf5 =+.

4.Nc3 e5 5.Nb1 Bd6 6.Nf3 Nd7 =+.

4.d4 Qa5 5.Qd2 (5.Nd2 Nf6=+) 5...Nf6 (5...Bf5 6.Nc3=+) 6.Qa5 Ra5 7.Nc3 (7.e3!?=+) 7...Bf5-/+ 8.Kd2 Nbd7 (8...e6 9.e3-/+) 9.Nf3 g6 (9...b5 10.Nh4 Bg4 11.h3-/+) 10.e3 Bg7 11.h4 (11.Bd3 b5=+) 11...0-0 (11...h5 12.Bd3-/+) 12.h5 (12.Bd3 Bd3 13.cd3 Rfa8=+) 12...Nh5-/+ 13.Rh5? (better is 13.a4-/+) 13...gh5-+ 14.Nh4 (14.Bd3 Bg4-+) 14...Bg6 15.f4 f5 (15...Bf6 16.Nf3-+) 16.a4 Nf6 17.Bd3 Ne4 18.Ne4 fe4 19.Be2 Rfa8 20.f5 Bf7 21.g4 hg4 22.Bg4 Ra4 23.Rg1 Kf8 24.Ng2 c5 25.c3 cd4 26.cd4 Bh6 27.Nf4 Ra2 28.Kc3 Rc8 29.Kb3 Ra6 30.f6 Rb6 31.Ka2 ef6 32.Bc8 Bg5 33.Ba3= Ke8 34.Bg4 Rc6 35.Kb2 Bf4 36.ef4+= Bg6? 37.Be2?? Kf7=+ 38.Bc5 b6 39.Bb5 Re6 40.Bb4+= e3 41.Bd7 Re4 42.f5 Bh5 43.Be6 Re6 44.fe6 Ke6 45.Rg7 e2 46.Rh7+- Bg4 47.Rb7 f5 48.Rb6 Kf7 49.Kc2 f4 50.Kd2 Bf3 51.Ke1 Bg4 52.Kf2 f3 53.Rd6 (53...Kg7 54.Rd5+-) 1–0. dannyboy238 – WoodPusher83, ChessWorld.net, 2007.

4.Bd4 Ra5 5.Nf3 Ra8 6.e3 f6 =.

4.e3 Bf5 5.Nf3 Nd7 6.a6 b5? (better 6...ba6!? 7.Nh4 Be4=) 7.a4 (7.Nd4 Bg6 8.Nc6 Qb6+-) 7...ba4 8.Ra4 Nc5 9.Ra2 Qb6 10.Nd4 (10.Bd4 Bg4+-) 10...Bg6 (better 10...Bc8!?+=) 11.Nc3+/- Nd7 12.Qa1 (12.f4!? e6 13.Be2+-) 12...e5+/- 13.Nb3 (13.Na4 Qc7 14.Nf3 f6+/-) 13...Bd6 (13...Bc2 14.Na5=) 14.a7 (14.Qd1!?+=) 14...Ne7 (14...Bc2 15.Nc1=+) 15.Ra6= Qb7 (better 15...Qc7 16.Bb5 Bb4 (16...cb5? 17.Nb5 Qc2 18.Nd6 Kf8 19.Ra3+-) 17.Nd5 cd5 (17...Nd5? 18.Bc6 N5b6 19.Rb6 Ra7 20.Ra6 Ra6 21.Qa6+/-) 18.Be5 Qc2 19.Bg7 Rg8+/-) 16.Na5 Qc7 (better 16...Qc8 17.Nc6 Nc6+-) 17.d4?? (17.Nc6 Nc6 18.Nb5+- (18.Nd5?! Qb7 19.Qa4 Nd4 20.ed4 Qd5+-)) 17...ed4=+ 18.ed4 0-0 19.Nb3 (19.Ba3 Ba3 20.Qa3 Rfe8-/+) 19...Rfe8 (better 19...Bc2 20.Qa2 Nf5-+) 20.Kd1= Nf5 (20...Nc8 21.Na5 Ra7 22.Nc6 Ra6 23.Qa6=+) 21.Bd3 Bb4 22.Qa4 (22.h3!?+=) 22...Bc3=+ 23.Bc3 Ne7 (better 23...Qf4!? 24.Bd2 Qg4 25.Kc1 Qg2=+) 24.Bb4 (24.Bg6 Ng6 25.Re1 Re1 26.Be1 c5+/-) 24...Nb6 (better 24...Bd3 25.cd3 Nc8 26.Qc6 Qc6 27.Rc6 Na7=) 25.Qa5+- Nec8 26.Nc5?? (better 26.Bg6 fg6 27.Bc5+-) 26...Bd3= 27.cd3 (27.Nd3 Ra7 28.Ra7 Na7+=) 27...Qf4 (27...Ra7 28.Ra7 Na7 29.Re1 Re1 30.Ke1=) 28.Rb6 (28.f3 Qd4 29.Re1 Re1 30.Be1 h6=+) 28...Nb6 29.Qb6 Qd4 30.Nd7?? (30.Re1 Qa1 31.Kc2 Re1 32.Be1 Qa2 33.Kd1 Qa1 34.Kc2 Qe1 35.Qb8 Qe8 36.Nd7+-) 30...Qa1-+ 31.Kc2 Qh1 32.Qb7 (32.Bd2 Qa1 33.Be3 c5-+) 32...Qg2 (better 32...Qa1 33.Qb8 Qa4 34.Kc3 d4 35.Kc4 Qa2 36.Kd4 Qd5 37.Kc3 Qd7-+) 33.Nb8 (33.Nb6 Qf2 34.Kb3-+) 33...Qf2 34.Kb3 Qa7 (better 34...Ra7 35.Qa7 Qa7 36.Nc6 Qb6-+) 35.Qa7 Ra7 (35...Reb8?! 36.Qc7=; 35...Rab8?! 36.Kc3=) 36.Nc6 Rb7 0-1. zembelek (2040) - Philidor1792 (2040), Rated Blitz game, lichess.org, 2015.

4.Nf3 Nd7 5.e3 Ngf6 6.Be2 e6 (6...Qa5=) 7.Bc3 Bd6 8.0-0 0-0 9.d3 e5 10.Nbd2 Qc7 11.h3 (Prevents intrusion on g4) 11...Re8 (Black plans e4) (11...c5 12.Nb3=+) 12.Rb1= e4 (Black gets more space) 13.Nd4 Nc5 14.N4b3 Na4 15.Bf6 (15.Ba1 Bh2 16.Kh1 Be5=) 15...gf6 16.Qe1 Nc3 17.Ra1 Ba3 18.de4 Bb2 19.Rb1 Nb1 20.Qb1 Bc3 (Increasing the pressure on the isolated pawn on a5) 21.ed5 cd5 22.Rd1 Bf5 23.Bb5 Red8 24.Bd3 Bg6 25.Nf3 Bh5 26.Be2 Bb4 (26...Ba5 27.Nbd4=) 27.Nbd4 (27.Nfd4 Be2 28.Ne2 Ba5+=) 27...Bc5 (27...Qa5 28.Qb3=) 28.a6 (28.Qb3 Ra5 29.Nb5 Qb6=) 28...ba6 29.Qb2 Bd4 (Black launches an attack) 30.Rd4 (30.ed4 Re8 31.c4 dc4-/+) 30...Rab8 31.Qc1 Rb6 32.c4 (32.Rd1 Qc5=) 32...Rdb8 33.Bd3 (33.Rd5?? (That pawn is poisoned) 33...Rb1 34.Rd1 Rc1 35.Rc1 Rb2-+) 33...Bg6 34.Bf1 (34.Rd5?? (the pawn of course cannot be captured) 34...Bd3 35.Rd3 Rb1-+) 34...Rb2 (34...Rb1 35.Qc3=+) 35.Rd5= Ra2 36.Qc3 Be4 37.Rd2 Qa5 38.Qa5 Ra5 39.Nd4 Ra1 40.f3 Rbb1 41.fe4 Rf1 42.Kh2 Rac1 43.Nf5 Rfd1 44.Rd1 (better is 44.Rb2!? is worthy of consideration 44...h5 45.Rb8 Kh7 46.Rb7=) 44...Rd1-/+ 45.c5? (better is 45.Ne7!? Kg7 46.Nc6-+) 45...Rc1 46.c6 a5 47.c7 (47.Nd4 doesn't improve anything 47...a4 48.Nb5 Rc6-+) 47...Rc7 48.Nh6 Kf8 (48...Kh8 49.Nf5 a4 50.Nd4-+) 49.Kg3 a4 (50.Nf5 a3-+) 0–1. lucya (2095) – gradesaver11 (2125), GameColony.com, 2002.

4.Nf3 e6 5.e3 Nf6 6.Be2 Bd6 7.0-0 Qa5 8.c4 Nbd7 9.d4 dc4 10.Bc4 0-0 11.Nbd2 b5 12.Bd3 Bb7 13.Qc2 c5 14.dc5 Rfc8 15.Nb3 Qa4 16.Bf6 Nf6 17.Nfd4 Bc5 18.Nc5 Qc2 19.Bc2 Rc5 20.Rfb1 Bd5 21.Rb5 Rb5 22.Nb5 Ra2 23.Ra2 Ba2 ½–½. Armstrong,Alan – Rossell,Everest, 1 Senior Chess Tourn, 2000.

4.f4 Nf6 5.Nf3 Qa5 6.e3 Bg4 =.

4.g3 Qa5 5.Bg2 Nf6 6.Nf3 g6 7.0-0 Bg7 8.d3 0-0 9.Nbd2 Nbd7 10.c4 Re8 11.cd5 cd5 12.Nb3 Qd8 13.Ne5 Ng4 14.Ng4 Bb2 15.Rb1 Bg7 (15...Ra2 16.Qd2 Nb6 17.Nc1 Bc1 18.Qa2+-) 16.Bd5 e6 17.Bg2 Ra2 18.Ne3 Nb6 19.Nc5 Nd5 20.Nd5 (worse is 20.Nb7 Bb7 21.Rb7 Nc3-/+) 20...ed5 21.Nb7 Bb7 22.Rb7 Rae2 ½–½. AlexSh – Echtwelzo, playchess.de, 2004.

4.g3 f6 5.f4 Qa5 6.Nf3 Bf5 =.

4.h3 Nf6 5.Nf3 Ra5 6.e3 e6 =.

5.Bb4 Na6 6.Ba3 =.

5.Bb4 e5 6.Bf8 Kf8 7.c3 Ra5 8.cd4 ed4 9.Nf3 Be6 10.e3 c5 11.a4 Nc6 12.Bb5 Na7 13.Na3 Nb5 14.Nb5 de3 15.fe3 Nf6 16.0-0 Bc4 17.Re1 Kg8 18.Ne5 Bb5 19.ab5 Rb5 20.d4 cd4 21.Qd4 Rd5 22.Qc4?? (better is 22.Qf4=) 22...Re5-+ 23.Red1 Qe8 24.Ra7 Re3 25.h3 Re1 26.Re1 Qe1 27.Kh2 Qe5 28.Kh1 h5 29.Rb7 Qe1 30.Kh2 Ng4 31.Qg4 hg4 32.Rb8 Kh7 33.Rh8 Kh8 34.hg4 Kh7 (34...Kh7 35.g3 Kh6 36.Kg2 Qe4 37.Kf1 Qf3 38.Ke1 Qg3 39.Kd2 Qf4 40.Ke2 Qg4 41.Ke3 g5 42.Kd3 Qf3 43.Kd4 g4 44.Kc5 g3 45.Kd6 g2 46.Kc5 g1Q 47.Kc4 Qe2 48.Kc3 Qc5 49.Kb3 Qec2#) 0–1. typ48 – 1stan1, kurnik, 2012.

5.Bb4 Nf6 6.Nf3= Na6 7.Ba3 Qa5 8.Nd4+= e5 9.Nb3 Qd8 10.Bb2 Bd6= 11.Nc3 Bg4 12.d4 0-0 13.h3 Be6 14.e4 Qb6 15.de5 Be5=+ 16.Bd3 Rfd8 17.Qf3 Qb4 18.0-0-0? Bc3-+ 19.e5 Nd5 20.Qe4 Nc5 21.Qh7 Kf8 22.Bc3 Nc3 23.Qh8 Ke7 24.Qh7 Na2 25.Kb1 Nc3 26.Kc1 Ra1! 27.Kb2 N5a4 28.Ka1 Qa3# 0–1. Mueller,P – Woelfelschneider,Peter, corr ICCF, 1993.

5.e3 Nf6 6.Nf3 Ra5 =.

5.Nf3 Nf6 6.e3 Bb4 7.Be2 0-0 8.0-0 dc4 9.Bc4 Nbd7 10.Qc2 Qa5 11.d4 Nb6 12.Nbd2 Nc4 13.Nc4 Qa4 14.Qd3 Ra6 15.Rfc1 Be7 16.Nce5 Nd5 17.Qb3 Nb4 a2 draws heavy fire 18.Qa4 Ra4 19.a3 Nd5 20.h3 Nb6 21.Nd2 Ra8 22.Ne4 Na4 23.Bc3 f6 24.Nd3 Nc3 25.Rc3 Rd8 26.f4 Rd5 27.a4 Rda5 28.Nec5 Bd8 29.Nb2 R5a7= 30.Rac1 Kf8 (30...Bc7 31.g4=) ½–½. Nicholls,Mervyn C (2310) – Barnsley,Anthony R (2440), Pappier mem–B email, 1998.

5.c4 e6 6.Nf3 Nd7 7.Be2 Ngf6 8.0-0 Bd6 9.d4 Ne4 (9...dc4 10.Bc4 0-0 11.Bd3=) 10.c5 Bb8 11.Qc2 0-0 (11...Qa4 12.Qa4 Ra4 13.Rc1=) 12.Nbd2 (12.Bd3 f5+=) 12...Nd2= 13.Nd2 e5 14.Nb3 (14.e4 ed4 15.ed5 cd5=) 14...Qc7 15.de5 Ne5 16.f4 Ng6 17.Qc3 (17.Bd4 Re8=) 17...f6 18.Nd4 (18.Qc2 Re8 19.Bd4 Qf7=) 18...Re8 (18...Qe7 19.Rfd1=) 19.g3 (19.Bh5!?=) 19...Qe7+= 20.Nc2 (20.Rfd1 Ba7 21.f5 Ne5-/+) 20...Bf5 (20...Ba7 21.Ba3-/+) 21.Bd3 (21.Nd4 Bh3 (worse is 21...Qe3 22.Qe3 Re3 23.Kf2 Re2 24.Ke2+=) 22.Rfd1 Ba7-/+) 21...Be4 (21...Bd3!? 22.Qd3 Qc5-+) 22.Be4-/+ Qe4 23.Rf2 Re7 24.Qd4 Bc7 25.Qe4+= Re4 26.Bd4 Re7 27.Ne1 Ba5 28.Rb2 Be1 29.Re1= Kf7 30.Kf2 f5 31.Ree2 Ke6 32.Rb3 Ra7 33.Reb2 Kf7 34.Rb6 Ke8 35.Kf3 Kd8 36.g4 fg4 37.Kg4 Kc8 38.h4 Nf8 39.Kf3 Ne6 40.R6b3 Nd4 41.ed4 Re4 42.h5 Re7 43.a3 Ra4 44.Rd3 Kd8 45.Re2 Re2 46.Ke2 Ke7 47.Kf3 Kf6 48.Kg4 h6 49.f5 Rc4 50.Kf4 ½–½. Holz auf der Heide,Gerhard (2010) – Partenheimer,Heinz (1735), Essen GER Senior Ch (B), 2005.

5.c4 e6 6.Nf3 Nf6 7.Bf6 (7.cd5 Nd5 8.e4 Nf6=) 7...gf6 8.cd5 ed5 9.Qc2 Na6 10.Nc3 Nb4 a2 draws heavy fire 11.Qb1 Na6 (11...Bd6 12.Be2=) 12.Be2+= Nc5 13.0-0 f5 14.Nd4 (14.Rc1 Ne4=) 14...Ne4 15.Ne4 (15.Qd3 Rg8=) 15...de4 (15...fe4 16.d3 f5 17.Bh5 Ke7 18.Rc1=+) 16.Nb3 Qc7 17.Qb2 (17.d3 Bd6 18.Kh1 Be5=) 17...Rg8=+ 18.Qc2 (18.d4 Bd6 19.g3 f4=+) 18...h5 (18...Bd6 19.Kh1 Be6=+) 19.Bh5 (better is 19.d4!?=) 19...Rh8-/+ 20.Qd1 Qd6 (20...f4 21.h3-/+) 21.h3 Qh6 (21...Bg7 22.d4 ed3 23.Rb1-/+) 22.Be2 Rg8 23.Re1 Qh3 Do you see the mate threat?. Black gets strong play along the open h–file 24.Bf1 Qh6 25.g3 (better is 25.d4-+) 25...Rh8 26.Bg2 b6 27.Nc1 Ba6 (28.Ne2 Bd3-+) 0–1. Kuni,Richard (1700) – Luzuriaga,Norberto Horacio (1700), TT–02 TSC, 2002.

5.c4 Bf5 6.cd5 Qd5 7.Nc3 Qd8 8.Nf3 e6 9.Bc4 Nf6 10.0-0 b5 11.Be2 Be7 12.d4 (12.d3 Ba3 13.Qb3 Bb2 14.Qb2 0-0= (14...Bd3? 15.Rfd1+-)) 12...h6 (12...b4 13.Nb1=) 13.Bd3 Bd3 (13...b4 14.Ne2=) 14.Qd3+= 0-0 15.Ne5 Bd6 16.f4 Qb6 (16...b4!? 17.Ne2 Qe7+=) 17.a4+/– b4 18.Nc4 Qc7 19.Ne2 (19.Ne4 Ne4 20.Qe4 Nd7+=) 19...Be7 20.e4 Rd8 (20...c5 21.f5+=) 21.e5 (21.f5 ef5 22.e5 Ne4+/–) 21...Ne8 (better is 21...Nd5!?+=) 22.f5+- ef5 23.Qf5 (23.Rf5 Ra6+/–) 23...Bf8 24.Nf4 Qe7 25.e6 Nd6 (25...Nf6!?+-) 26.ef7 Nf7 27.Rae1 Qa7? (27...Qg5 28.Qd3 Nd7+-) 28.Ng6 (28...Rd4 29.Bd4 Qd4 30.Rf2+-) 1–0. Kern,Guido – Hansen, corr 3GMM½–09, 1998.

5.c4 Nf6 6.Qb3 Nbd7 7.Bc3 (better 7.Nf3=) 7...Qa6 (better 7...Qc7=+) 8.cd5+/- Qa7 9.dc6 bc6 10.Bc4 e6 11.Nf3 Nc5 (11...Ba6 12.Bf6 Nf6 13.Nc3+/-) 12.Qc2 Bd6 13.d4 Nce4 14.Bb2 (14.0-0 Ba6 15.Nbd2 Nd2 16.Bd2 Bc4 17.Qc4 c5+/-) 14...0-0 15.Bd3 (15.Nc3 Nc3 16.Bc3 Ba6 17.Ba6 Qa6+=) 15...Bb4 (15...Qa5 16.Nbd2 Nd2 17.Nd2+= (17.Qd2?? Bb4-+)) 16.Nbd2 Nd2 17.Nd2 Ba6 18.0-0 Bd3 19.Qd3 Rfb8 20.Nc4 Nd5 21.Ne5 (21.Rfb1 Qa6+/-) 21...Qb6 (21...Qc7 22.e4 Nf4 23.Qc2+/-) 22.Nd7 (22.Rfb1 Qc7+/-) 22...Qb5 23.Qb5 Rb5 (23...cb5? 24.Nb8 Rb8 25.Rfc1+-) 24.Rfb1 (24.a4 Rb7 25.Ne5 Bd6+/-) 24...f6 (24...Nc3!? 25.Rf1 Ne2 26.Kh1 Bd2=+) 25.a3 Ba3 26.Ba3 Rb1 (26...Ra3 27.h4+=) 27.Rb1 Ra3 28.e4?? (better 28.g4+=) 28...Nc3-/+ 29.Re1 (29.Rb8 Kf7 30.g4 Ne2 (30...Ne4?! 31.Rb7 Ke8 32.Nb8=+) 31.Kf1 Nd4-/+) 29...Kf7 30.f3 Ra2 (30...Nb5 31.Rd1 Ra4 32.Nb6-/+) 31.Nc5 (better 31.Kf1!?=+) 31...Ne2-/+ 32.Kh1 (32.Kf1 Nd4 33.f4 Rc2-/+) 32...Nd4-+ 33.Rd1 e5 34.h4 h5 (34...Rc2 35.Nd3-+) 35.Kh2? (better 35.f4-+) 35...Rc2 36.Kg3 (36.Nb7 Nf3 37.Kg3-+) 36...Rc5 37.Rd3 (37.Rd2 Ra5 38.Rb2 c5 39.Rb7 Kg6-+) 37...Rc2 38.Ra3 (38.Rd1 Ne2 39.Kh2 c5-+) 38...Ne2 39.Kf2 (39.Kh2 Nf4-+) 39...Nf4 40.Ke3 (40.Kg1 Ng2 41.Kf1 Kg6-+) 40...Ng2 (40...Re2) 41.Kd3-+ Rf2 42.Ra7 Kg6 43.Rc7 Rf3 44.Ke2 Nf4 (44...Nf4 45.Kf3 Ne6-+) 0-1. ClayPigeons (2205) - xd00bx (2275), Rated Bullet game, lichess.org, 2019.

5.c4 Nf6 6.Nc3 e6 7.Nf3 Nbd7 8.Be2 Bd6 9.cd5 ed5 10.0-0 0-0 11.Qc2 Re8 12.a4 Ne4 13.Bd3 Ndf6 14.Nd4 Qc7 15.f4 Qe7 16.Rae1 Bd7 17.Nf3 Nc3 18.Bc3 Ne4 19.Ng5 h6 20.Ne4 de4 21.Bc4 b5 22.ab5 cb5 23.Bb3 Rac8 24.Qb2 Qf8 25.Ra1 b4 26.Bd4 Be6 27.Ra7 Bc5 28.Bc5 Qc5 29.Be6 Qa7 30.Bc8 Rc8 31.Qb4 Qa2 32.Qe4 Qd2 33.Qf3 Rc3 34.Qa8 Kh7 35.Qe4 g6 36.f5 Qe3 37.Qe3 Re3 ½–½. Scholefield – de Coverly, Bucks Lge 1980.

5.c4 Nf6 6.Nf3 Bg4 =.

5.Be2 f6 =.

5.Nf3 b5 =.

5.Nf3 Nf6 6.Nc3 (6.Be2 b5=) 6...g6 (6...Nbd7 7.Be2=) 7.Be2 Bg7 8.0-0 0-0 9.a3 (9.Nd4 b6=) 9...Ne4 (9...b5 10.a4 b4 11.Nb1=+) 10.Ne4? (better is 10.Nd4=) 10…Bb2-+ (11.Nc3 Ba1 12.Qa1 Qa3-+; 10...de4?! 11.Bg7 Kg7 12.Nd4=) 0–1. mike62 – Orangattackman, internet, 2005.

5.Nf3 Bg4 6.c4 e6 7.cd5 ed5 8.Be2 Nd7 9.0-0 Ngf6 10.Ne5 Be2 11.Qe2 Nc5 12.Ng4 Ng4 13.Qg4 Nd3 14.Qf5 Qa6 15.Bd4 c5 16.Bc3 Rd8 17.Na3 Rd7 (< 17...Qa3 18.Qd3 Qa6 19.Qc2=) 18.Nc2 c4 19.Rab1 Qe6 (19...Qa2 20.Rb7 Qa4 21.Rb8 Rd8 22.Rd8 Kd8 23.Qd5 Qd7 24.Qc4+-) 20.Qh5 g6 21.Qf3 Rg8 22.Rb5 f5 23.Rfb1 Nc5 24.Qf4 Be7 25.Nd4 Qe4 26.Qe4 de4 (< 26...Ne4 27.Rb7 Bh4 28.g3+/–; < 26...fe4 27.f3=) 27.f3 Kf7 28.fe4 fe4 29.Rf1 Ke8 30.Rb4 Rf8 31.Rfb1 Rf6 32.Rc4 Ra6 33.Nb3 Nd3 34.Re4 Ra2 35.Nc1 Nc1 36.Rc1 Rc7 37.Rf1 (37…g5 38.Rf5+/–) 1–0. Rau,J – Simmelink,JTh, corr Kuhlmann mem, 1999.

5.Nf3 Bg4 6.h3 Bf3 7.Qf3 Nd7 8.Bc3 Qb6 9.a4 Ngf6 10.Qf4 e6 11.Bf6 Nf6 12.Nc3 Qb4 13.Qf3 Qd6 14.Rb1 Qc7 15.Qg3 Qg3 16.fg3 0-0-0 17.Bd3 Kc7 18.g4 h6 19.0-0 Bc5 20.Rb3 b6 21.Kh1 Ra8 22.Re1 e5 23.Rf1 Rhd8 24.Ra1 e4 25.Bf1 d4 26.ed4 Bd4 27.Rd1 Ra5 28.Rdb1 Rd7 29.g3 h5 30.gh5 Bc3 31.dc3 Nh5 32.g4 Ng3 33.Kg2 Nf1 34.Kf1 Ra6 35.Rb4 Re7 36.Re1 e3 37.Ke2 f6 38.Rd1 g5 39.Rf1 Re6 40.Rd4 c5 41.Rd3 Ra4 42.Re3 Rd6 43.Rd3 Re4 44.Kd2 Rde6 45.Rdf3 Re2 46.Kc1 Re1 47.Re1 Re1 48.Kd2 Re6 49.c4 Kd6 50.Rd3 Ke7 51.Rb3 Kf7 52.Rd3 Re8 53.Rb3 Rh8 54.Ke2 Kg6 55.Kd2 Rb8 56.Rd3 Re8 57.Rd6 Rh8 58.Rd3 Kf7 59.Rb3 Rh7 60.Ke2 Kg6 61.Kd2 Rd7 62.Rd3 Ra7 63.Rb3 Rb7 64.Re3 Kf7 65.Rb3 Ke6 66.Re3 Kd6 67.Rf3 Ke5 68.Rf5 Ke6 69.Rf3 Rd7 70.Rd3 Rd4 71.Kc3 Rd3 72.Kd3 f5 73.gf5 Kf5 74.Ke3 Kg6 75.Kf3 Kh5 76.Kg3 Kh6 77.Kf2 Kg7 78.Ke3 Kh6 79.Kf2 Kh7 80.Kf3 Kg6 81.Kg4 Kf6 82.Kf3 Ke5 83.Kg4 Kf6 84.Kf3 Kf5 85.Kg3 Ke5 86.Kg4 Kf6 ½–½. Zarkov 4.2b – Shredder 2.0, 1998.

5.f4 Qb6 6.Qc1 e6 7.Nc3 (7.Nf3 Nf6=) 7...Nf6 8.Rb1 (8.Nf3 Bd6=) 8...Qc7=+ 9.Nf3 Nbd7 10.Be2 Bd6 11.0-0 b5 12.a3 e5 13.fe5 Ne5 14.h3 0-0 15.Nd4 Nc4 Increasing the pressure on the isolated pawn on a3 (15...Bd7 16.Ra1=+) 16.Bc4 dc4 17.d3 Re8 18.dc4 bc4 19.Rf3 Bc5 20.a4 Bd7 (20...Nd5 21.Qd2=+) 21.Ra1 (21.Ba3 Nd5 22.Nd5 cd5 23.Bc5 Qc5-/+) 21...Reb8 (21...Qb6 22.Rb1=+) 22.Ba3 Ba3 23.Qa3 (23.Ra3 c5 24.Nf5 Qe5=+) 23...c5 24.Nde2 Rb4 The pressure on the isolated pawn grows (24...Qe5 25.e4=+) 25.a5 Qe5 26.Ng3 Bc6 27.e4 Rb7 (27...Ba4 28.Qc1 Ra5 29.Nf5=) 28.a6 Rba7 29.Re3 Ne8 (29...Bd7 30.Qa5=+) 30.Qa2 Nd6 31.Qa5 (31.Kf2 Re8-/+ (31...Ra6?! 32.Qa6 Ra6 33.Ra6=)) 31...f5 32.Qb6 Qd4 (32...f4 33.Qc6 fe3 34.Nge2-/+) 33.Nf1 f4 The passed pawn on e4 will become decisive later (33...Ne4?! 34.Qc6 Nc3 35.Kh2=+) 34.Rd1 Ra6 Black creates threats along the open a–file 35.Qc7 Rc8 (35...Qd1 36.Nd1 fe3 37.Nfe3 Ne4 38.Nf2 Nf2 39.Kf2 Rf8 40.Kg1=+) 36.Qd6 Qd6 37.Rd6 fe3 38.Ne3 Ra3 39.Nf5 (39.Ned1 Kf7-/+) 39...Kf8 (39...Rc3 40.Ne7 Kf7 41.Nc8 Be4 42.Rd2-+) 40.Nd5 Bd5 41.Rd5 Rc3 42.Nd6 Rd8 43.Rd2 Ra8 44.Nb5 Re3 45.Nd6 c3 46.Rf2 Kg8 47.Rf5 Re2 48.Rc5 Rc2 49.e5 g6 50.e6 (50.Rc7 Raa2 51.Kh1 Rg2 52.Rc8 Kg7 53.Rc7 Kf8 54.Rc3 Rge2-+) 50...Ra1 51.Kh2 Re1 (51...Raa2!? 52.Kh1 Rg2 53.e7-+) 52.Nb5 Ree2 (52...Re6?! 53.Nd4 Ree2 54.Ne2 Re2 55.Rc3=) 53.Rc3 Rg2 54.Kh1 Rh2 55.Kg1 Rcg2 56.Kf1 Ra2 57.Kg1 Rhb2 (58.Rc8 Kg7-+) 0–1. Dlugolecki,Grzegorz – Luzuriaga,Norberto Horacio, corr or01–015 E–mail, 2002.

5.f4 Nf6 6.Nf3 =.

5.c4 Nf6 6.Nf3 Bg4 7.Qb3 Bf3 8.gf3 b6 9.Nc3 e6 10.Be2 Nbd7 11.d4 Bd6 12.f4 0-0 13.0-0 Kh8 14.a4 dc4 15.Bc4 Rh5 16.Be2 Rh4 17.Kh1 Ng4 18.Bg4 Rg4 19.Rg1 Qh4 20.Rg4 Qg4 21.Qd1 Qh4 22.Qf3 c5 23.Ne2 c4 24.Ba3 Ba3 25.Ra3 Nf6 26.Kg2 Nd5 27.h3 Rc8 28.Nc3 Nc3 29.Rc3 Qf6 30.Qb7 Qd8 31.Qf7 1–0. marvis (1645) – cintiq12wx (1605), playok.com, 2012.

5.Bd3 c5 6.Nf3 Nf6 7.0-0 Nc6 8.Bc3 Ra8 9.Bb5 Bg4 10.a4 Ne4 11.d3 Nc3 12.Nc3 e6 13.h3 Bh5 14.e4 d4 15.Bc6 bc6 16.Nb1 Bd6 17.Nbd2 Ra6 18.Nb3 Qe7 19.g4 Bg6 20.Qc1 h5 21.g5 h4 22.a5 Bh5 23.Nh2 c4 24.dc4 Be2 25.Re1 Bc4 26.Ng4 e5 27.Kh1 Bb4 28.Nd2 Bb5 29.c4 dc3 30.Nf3 f6 31.Ne3 Qd7 32.Ng4 Qe6 33.gf6 gf6 34.Ng1 Ba5 35.Rd1 c5 36.Qc2 Rh7 37.Ne2 Rd7 38.Nc3 Bc3 39.Qc3 Bd3 40.Ra6 Be4 41.Kh2 Qa6 42.Rd7 Kd7 43.Qc5 Bf3 44.Qf8 Qd6 45.Nf6 Ke6 46.Qd6 Kd6 47.Ng4 Ke6 48.Ne3 Kf6 49.Ng4 Kf5 50.Ne3 Kf4 51.Kg1 Bc6 52.Ng2 Kg5 53.Kh2 Bd7 54.Ne3 Be6 55.Ng2 Bc8 56.Ne3 e4 57.Nd5 Bd7 58.Kg2 Be6 59.Ne3 Kf4 60.Nd1 Ke5 61.Ne3 Bf7 62.Kf1 Be8 63.Ng2 Bd7 64.Ke2 Bh3 65.Nh4 Kd4 66.Nf3 ef3 67.Kf3 Ke5 68.Ke3 Bc8 69.f4 Kf5 70.Kf3 Bb7 71.Ke3 Be4 72.Kd4 Bg2 73.Ke3 Bd5 74.Kd4 Be6 75.Ke3 Bd7 76.Kf3 Bc6 77.Ke3 Bb7 78.Kd4 Ba6 79.Ke3 Bc4 80.Kd4 Bf7 81.Ke3 Bb3 82.Kf3 Ba4 83.Ke3 Bc2 84.Kf3 Be4 85.Ke3 Bc6 86.Kd4 Bd7 87.Ke3 Bb5 88.Kf3 Bf1 89.Ke3 Bh3 90.Kf3 Bg4 91.Ke3 Bh5 92.Kd4 Be8 93.Ke3 Bg6 94.Kf3 Bh5 95.Ke3 Bf7 96.Kf3 Bb3 97.Ke3 Ba4 98.Kf3 Bb5 99.Ke3 Ba6 100.Kf3 Bc4 101.Ke3 Be6 102.Kf3 Bd5 103.Ke3 Bh1 104.Kd4 Ba8 105.Ke3 Bg2 106.Kd4 Bf3 107.Ke3 Ba8 108.Kd4 Be4 109.Kc4 Bc2 110.Kd5 Bd3 111.Kd4 Be2 112.Ke3 Bg4 113.Kd4 Kf4 ½–½. NN – COMP, 1998.

5.Nf3 b5 =.

5.Nf3 Bg4 6.c4 Nf6 7.cd5 Nd5 8.Nc3 Bf3 9.Qf3 Nb4 10.Qe4 e6 11.Be2 Nd7 12.Qb1 e5 13.a3 Na6 14.d4 ed4 15.ed4 Be7 16.0-0 Nc7 17.Rd1 0-0 18.Bc1 Qa8 19.Qb3 Nf6 20.a4 Bd6 21.Bf3 Ne6 22.Rb1 Re8 23.Be3 Nf4 24.Qb7 N4d5 25.Bd2 Ra7 26.Qa8 Rea8 27.Bd5 Nd5 28.Nd5 cd5 29.Rb6 Bc7 30.Rc6 Bd8 31.Ra1 h5 32.Rd6 Ba5 33.Ba5 Ra5 34.f4 Kf8 35.Re1 Re8 36.Re5 g6 37.Rdd5 Re5 38.Re5 Ra4 39.Rd5 Ke7 40.f5 g5 41.h3 h4 42.Kf2 Ra2 43.Kf3 Rd2 ½–½. Coltharp – Smits, email CTON 1996–97.

5.Nf3 Bg4 6.Be2 Nd7 7.0-0 Ngf6 8.h3 (8.Bc3 Ra7=) 8...Bf3 9.Bf3 e5 10.d3 Be7 11.c4 0-0 12.cd5 Nd5 13.Nd2 Ba3 14.Rb1 Bb2 15.Rb2 f5 (15...b6 16.Bd5 Rd5 17.Qf3=+) 16.Qc2 Rc5 17.Qb3 b6 18.Nc4 Kh8 19.a4 b5 20.ab5 Rb5 21.Qa3 Rb2 22.Qb2 Qc7 23.Qa3 ½–½. Woschkat,Karl_Heinz – Parzefall,Jan, compuserve, 1996.

5.f4 Nf6 6.Nf3 Bg4 7.Be2 e6 8.0-0 Bd6 9.Kh1 0-0 10.d3 Bc5 11.Nd4 Be2 12.Qe2 Bb6 13.Nd2 Nbd7 14.e4 White intends f5 14...Qa8 15.a3 Bd4 16.Bd4 Ra3 17.e5 Ne8 18.f5 Ra1 19.Ra1 Qb8 20.Re1 c5=+ 21.Bf2 Qc8 22.Bh4= Nc7 23.Be7 Re8 24.f6 Nb5 25.Qg4 g6 26.Nf3 Nd4 27.Nd4 cd4 28.Qd4 Qc2 29.Qe3 Qc3 30.Bd6 d4 31.Qg3 Ra8 32.h3 b6 33.Kh2 Ra2 34.Rg1 b5 35.Qf4 Qd2 36.Qd4 Qe2 37.Qf4 Qd2 38.Qd2 Rd2 39.Rc1 h5 40.Rc8 Kh7 41.Rd8 Nf6+/– 42.ef6 Rd3 43.Be7 Rd8+= 44.Bd8 g5 45.Kg3 Kg6 46.Kf3 Kf5 47.g4 hg4 48.hg4 Ke5 49.Ke3 b4+= 50.Ba5 Kf6= 51.Bb4 Kg6 ½–½. Bakker,P – Comp Polgar X, AEGON, 1990.

5.Bc3 e5 6.Nf3 Bd6 7.a4 f5 (7...Ngf6 8.d3=+) 8.Qc1 (8.Be2 Ngf6=) 8...Ngf6 9.Qb2 Qe7 10.d4 e4 (10...ed4 11.Nd4 Nc5 12.Be2=+) 11.Ne5= 0-0 12.Nd2 (12.a6!? Rb8 13.ab7 Bb7 14.Nd7 Qd7 15.Qc1=) 12...Ng4=+ 13.h3 (13.Nd7 Bd7 A) 14.Qb7?? Rfb8 (14...Bh2?! 15.Rh2 Nh2 16.Bb4+=; 14...Nh2?! 15.Qb1-/+) 15.a6 Rb7 16.ab7 Rb8-+; B) 14.h3-/+) 13...Nge5-+ (13...Be5?! 14.hg4 Bd6 15.gf5=) 14.de5 Ne5 15.Be2 f4 16.ef4 Rf4 17.0-0? (better 17.Rb1-+) 17...Qg5 18.g3 Bh3 19.Be5 (19.Qb7 Raf8 20.Bd4 Rb8-+) 19...Be5 (19...Qe5?! 20.Qe5 Be5 21.gf4 Bf1 22.Rf1 Bf4 23.Nb3=) 20.c3 (20.Qb7 Raf8 21.Qb6 Ba1 22.Ra1 Rf2 23.Qf2 Rf2 24.Kf2 Qd2-+) 20...Bf1 21.Nf1 Raf8 22.Bd1 (22.Qc1 h6 23.Ra2 Rf2 24.Qg5 hg5-+) 22...c5 Black intends d4 (better 22...Rf2!? 23.Qf2 Rf2 24.Kf2 Bc3 25.Ra2-+) 23.Qd2 (23.Rb1 Bc3! 24.Qc3 Rf2-+) 23...d4 (23...Bc3 24.Qc3 Rf2 25.Bb3-+) 24.cd4 (24.Rb1 e3 25.Qa2 Kh8-+) 24...Bd4 25.Ne3 (25.Ra3-+) 25...Rf2 26.Qf2 (26.Bg4 Rd2 27.Be6 Kh8 28.Bg4 Qe3 29.Kh1 Qh6 30.Bh3 Qh3) 26...Be3 27.Ra2 (27.Bb3 Kh8 28.Be6 Qg3 29.Kh1 Rf2 30.a6 Qg2) 27...Rf2 28.Rf2 (28.Bb3 Kh8 29.Rf2 Qg3 30.Kh1 Qf2 31.a6 Qg1) 28...Qg3 29.Kh1 Bf2 30.Bb3 Kf8 (30...Kf8 31.a6 Qg1) 0-1. zembelek (1990) - lokomotiv_bz (2220), Rated Blitz game, lichess.org, 2014.

5.Nf3 Qa5 6.Be2 =.

5.Nf3 Ngf6 6.a6 ba6 7.c4 Rb8 8.Ba3 g6 9.Nd4 Qc7 10.Qa4 Bb7 11.Nc3 c5 12.Nb3 d4 13.Nd5 Nd5 14.cd5 Bd5 15.Nc5 de3 16.fe3 Bc6 17.Na6 Qb7 18.Qa5 Rc8 (18...Bg2?? 19.Bg2 Qb6 20.Qa4+–) 19.Rc1 Bg7 20.Bb5 (better is 20.Qb4!? 0-0 21.Qb7 Bb7 22.Nc5 Nc5 23.Bc5+/–) 20...0-0= (< 20...Bb5 21.Rc8 Qc8 22.Nc7 Kf8 23.Nb5+/–) 21.Bc6 Rc6 22.Nc5?? (better is 22.Rc6 Qc6 23.Nc7 Qg2 24.Qd5 Qd5 25.Nd5=) 22...Nc5–+ 23.Rc5 Ra8 (23...Ra8 24.Qb4 Rb6–+; better is 23...Rc5 24.Qc5 Rc8–+) 0–1. Mielke,Sven (1925) – Deglmann,Ludwig (2325), Wichern op 5th, 1999.

5.Nf3 Ngf6 6.Nc3 e5=+ 7.d3 (7.Be2!?=+) 7...Qa5-/+ 8.Qd2 b5 9.Ne2 (9.a4 b4 10.Ne2 Bd6-/+) 9...Qd2-/+ 10.Nd2 Bd6 11.e4 (11.Ng3 0-0-/+) 11...0-0 12.Ng3 Nc5 (12...d4 13.Nf5 Bb4 14.f4-/+) 13.Nf5 (13.ed5!? Na4 14.Nge4 Ne4 15.Ne4 Bb4 16.c3-/+) 13...Bf5–+ 14.ef5 Ra4 (14...Na4 15.Bc1–+) 15.Be2 (15.c4!?-/+) 15...Rfa8–+ 16.a3 Ncd7 17.0-0 (17.Nb3 Ba3 18.Ba3 Ra3 19.Ra3 Ra3–+) 17...Ba3 18.Ba3 Ra3 19.Nb3 (19.Ra3 Ra3 20.f4 ef4 21.Rf4 Ra2–+) 19...b4 (19...Ra2 20.Rfe1–+) 20.h3 (20.g4 h6–+) 20...c5 21.c4? (21.Rfe1–+) 21...bc3 22.Ra3 (22.Rfc1 Ra2–+ (22...Rb3 23.Ra8 Nf8 24.Bd1=)) 22...Ra3 23.Nc1 c2 (24.f4 e4–+; 23...Ra1 24.Re1–+) 0–1. Shakkimestari – pierre, internet, 2006.

5.Nf3 Ngf6 6.Be2 Ra5 7.0-0 Qc7 =.

5.Nf3 Ngf6 6.Be2 e6 7.0-0 Bd6 8.c4 e5 9.Ba3 Ba3 10.Na3 Ra5 11.Qb3 0-0 12.d4 e4 13.Nd2 Qe7 14.Nc2 Re8 15.Qc3 Ra8 16.cd5 Nd5 17.Qb2 Qg5 18.Nb4 N7f6 19.Nd5 Nd5 20.Nc4 Bh3 21.g3 Bf1 22.Bf1 Ra7 23.Ne5 Qd8 24.Bc4 f6 25.Bd5 Qd5 26.Ng4 h5 27.Qb6 Rea8 28.Nf6 gf6 29.Qc7 Ra2 30.Ra2 Ra2 31.Qc8 Kg7 32.Qb7 Kg6 33.Qe7 Ra8 34.h3 Qf5 35.g4 Ra1 36.Kg2 Qf3 37.Kh2 Qf2 0–1. marvis (1740) – haime13 (1845), kurnik, 2012.

5.f4 Qa5 6.Nf3 b5 7.Nc3 Ngf6 8.a4 b4 (< 8...ba4 9.Ra4 (9.Na4?! Qb4 10.Nc3 Ra1 11.Qa1 Qb8=) 9...Qa4 10.Na4 Ra4 11.c4+-) 9.Nb5 Ba6 (9...cb5? 10.ab5 Qa1 11.Ba1+-) 10.Ne5 Qb6 (10...cb5? 11.ab5 Qc7 12.ba6 Ne5 13.fe5+-) 11.a5 Qb7 (12.Nd4 Bf1 13.Rf1 c5=) =. Woschkat,Karl_Heinz – Silies,Juergen, remoteschach.de, 2003.

5.c4 Ra5 6.Bc3 Ra8 7.Nf3 e6 8.d4 Ne4 9.c5 Be7 10.Bd3 0-0 11.0-0 Nd7 12.Qc2 f5 13.Nbd2 Qc7 14.Nb3 Rf6 15.Rfb1 Rg6 16.a4 Rh6 17.a5 Ndf6 18.h3 Nc3 19.Qc3 Ne4 20.Qb4 Bd8 21.Ne5 Bf6 22.f3 Be5 23.de5 Qe5 24.fe4 fe4 25.Bc2 Qg5 26.Kh2 Qe3 27.Qb6 Qf4 28.Kh1 Rf6 29.a6 Ra6 30.Ra6 ba6 31.Nd4 Rf8 32.Nc6 Bd7 33.Qa6 Qf2 34.Ne7 Kh8 35.Qd6 Qc2 36.Rb8 Qc1 37.Kh2 Bc8 38.Rc8 Rc8 39.Nc8 h5 40.Qf8 Kh7 41.Ne7 Qb2 42.Qg8 Kh6 43.Qe6 Qf6 44.Ng8 Kg5 45.Nf6 gf6 46.Qd5 1–0. fuiste – masmembielaC, www.ajedrez21.com, 2001.

5.c4 Ra5 6.Bf6 ef6 7.a3 Bd6 8.Nf3 0-0 9.Be2 Bg4 10.h3 Bh5 11.cd5 Rd5 12.d4 Nd7 13.Bc4 Nb6 14.Bd5 Nd5 15.0-0 Re8 16.Qb3 Bf3 17.gf3 Qd7 18.Kg2 b5 19.Nc3 Re3 20.fe3 Ne3 21.Kf2 Nf1 22.Rf1 Qh3 23.Ne4 Bf4 24.Qc3 h6 25.Rg1 Kh7 26.Qd3 f5 27.Ng3 g6 28.d5 Qh2 29.Rg2 Bg3 30.Kf1 Qh1 31.Rg1 Qh3 32.Rg2 c5 33.d6 Bd6 34.Qd6 Qf3 35.Kg1 Qe3 36.Kh2 b4 37.ab4 1–0. vihavald (1635) – cintiq12wx (1650), kurnik, 2012.

5.c4 e6 6.Nf3 Nbd7 7.cd5 ed5 (< 7...Ra5 8.de6 fe6 9.d4+/–) 8.Qc2 Ra5 (8...Qa5 9.Be2=) 9.Nc3 (9.Be2 Bd6=) 9...Bd6 10.Be2 0-0 11.0-0 Re8 12.a4 Ne4 (12...Ne5 13.Ne5 Be5 14.d4=+) 13.d3 Ng5 14.Nd4 Nf6 (14...Nc5 15.Rfb1=+) 15.f4 (15.Nb3 Ra8=) 15...Ne6=+ 16.Nf5 (16.Nb3 Ra8=+) 16...Bc7-/+ 17.Bf3 (17.d4!?-/+) 17...d4 18.Nd4 Nd4 (19.ed4 Qd4 20.Qf2 Qf4-+) 0–1. yUGyOR – luckyTramp, ChessWorld.net, 2002.

5.c4 Bf5 6.Qb3 (6.Bf6 ef6 7.Qb3 Na6=) 6...Qc7 (6...Nbd7 7.Bc3= (7.Qb7? Rb8 8.Qc6 Rb2-+)) 7.cd5 (7.Bf6 ef6 8.cd5 Ra5+= (< 8...Qa5 9.Qb7 Bd6 10.dc6+/–)) 7...Nd5= 8.Nc3 e6 (8...Nf6 9.Nf3=) 9.e4+= Nc3 10.ef5 Nd5 11.fe6 fe6 12.Qh3 (12.Nf3 Ra5 13.Be5 Bd6 14.Bd6 Qd6 15.Qb7 0-0+=) 12...Qf7= 13.Nf3 Nf4 (13...Bc5 14.Qg3+=) 14.Qg4 h5 (14...Nd7 15.Bc3+=) 15.Qg5+/– Bd6 16.g3 (16…Ng6 17.Bd3+/–) 1–0. Roe,Philip Lawrence – Verschueren,Frederic, IECG, 1997.

5.Nf3 Ra5 6.Bc3 Ra7 7.Bd4 =.

5.Nf3 e6 6.c4 (6.Be5 Be7=) 6...Bd6 7.Be2 (7.cd5 ed5 8.Be2 0-0=) 7...0-0 8.0-0 Ra5 (8...dc4 9.Bc4 Ra5 10.d4=) 9.Qc2 (9.Bc3 Ra8=) 9...h6 (9...dc4 10.Bc4 b5 11.Bd3=) 10.Rc1 Nbd7 11.d4 dc4 (11...b5 12.c5 Bb8 13.a4 ba4 14.Bc3+=) 12.Qc4 (12.Bc4 Nd5=) 12...Qc7 (12...Nb6 13.Qc3 Na4 14.Qc2=) 13.Nbd2 e5 (13...Nb6 14.Qc3 Nbd5 15.Qc2=) 14.Qc2 ed4 (14...Rd8 15.Nc4 e4 16.Na5 ef3 17.Nc6 Bh2 18.Kh1 fg2 19.Kg2 bc6 20.f4 Bf4 21.ef4 Qf4 22.Rf1 (22.Qc6? Ne4 23.Rf1 Qg3 24.Kh1 Qh3 25.Kg1 Qe3 26.Kh1 Qe2-+) 22...Qg5 23.Kh1=+) 15.Bd4 Ne5 16.Be5 (16.Ne5 Be5 17.Nf3 Bd4 18.Nd4 Rd8+=) 16...Be5 17.Ne5 Re5 18.Nf3 (18.Bd3 Rd8 19.Ne4 Ne4 20.Be4 Be6+=) 18...Bf5 19.Bd3 (19.Qc3 Rd5+=) 19...Bd3 20.Qd3 Ra5 21.Qb3 (21.Rd1 Rfa8 22.Qc2 b5=) ½–½. Woschkat,Karl_Heinz – Beutel,Heinrich, compuserve, 1996.

5.Nf3 Bf5 6.d4 (6.Nd4 Bg6=) 6...e6 (6...Qa5 7.Nbd2=+) 7.Nbd2 Qa5 8.c4 (8.Nh4 Bg6=+) 8...Nbd7 (8...b6 9.Nh4=+) 9.Be2 (9.Nh4 Bg4 10.Nhf3 Bf3 11.gf3 b5 12.cb5 cb5=+) 9...dc4=+ 10.Bc4 b5 (better is 10...Bd6=+) 11.0-0? (better is 11.Bb3=) 11...bc4-+ 12.Nc4 Qb5 13.Qb3 Be7 (13...Rb8 14.Nfe5-+) 14.Rfc1 0-0 (14...Be4 15.Nfd2-+) 15.Nce5 (15.Ba3 Ba3 16.Na3 Qe2-+) 15...Qb3 (15...Be4 16.Nd7 Nd7 17.Qb5 cb5 18.Rc7-+) 16.ab3 c5 17.Nd7 (17.Nc6 Bd6-+) 17...Nd7 18.dc5 Nc5 19.b4? (19.Nd4-+) 19...Nd3 20.Ra8 Ra8 (21.Ra1 Ra1 (21...Nb2? 22.Ra8 Bf8 23.Ne5+-) 22.Ba1 Bb4-+; 20...Nb2?! 21.Rf8 Bf8 22.b5+=) 0–1. Davis,David – Pennachin,Cassio, IECC, 1997.

5.Nf3 Bg4 6.c4 e6 7.Qb3 Nbd7 8.Bc3 Qc8 9.d4 Bd6 10.Nbd2 Bf3 11.Nf3 Ne4 12.Nd2 Nc3 13.Qc3 0-0 14.Bd3 Qc7 15.Qc2 g6 16.c5 Be7 17.Nb3 e5 18.0-0 Rfe8 19.f4 ed4 20.ed4 f5 21.g3 Nf6 22.Rfe1 Ne4 23.Qb2 Bf6 24.Rab1 h5 25.Re2 h4 26.Kg2 Qg7 27.Rf1 Re7 28.Be4 de4 29.Qc3 Rd7 30.Rd1 g5 31.fg5 Qg5 32.Rf1 hg3 33.Qg3 Rg7 34.Qg5 Rg5 35.Kf2 Rh5 36.Ke1 Kf7 37.Rg1 Rd8 38.Rgg2 Rh7 39.Kf1 Rh4 40.Ke1 Re8 41.Rb2 f4 42.Nd2 Re7 43.Nc4 Bd4 44.Nd6 Kf6 (45.Rb7 Rb7 46.Nb7 f3-+) 0–1. Woschkat,Karl_Heinz – Markus,Roland, E–7–017 CiF, 1999.

5.Nf3 Bg4 6.Be2 Qa5 7.Bc3 Qb6 (7...Qd8 8.Bf6 ef6 9.Nd4=) 8.Bd4 c5 (8...Qd8 9.Bf6 ef6 10.Nd4=) 9.Bf6 ef6 (9...Qf6 10.Nc3 Bf3 11.Bf3=) 10.Nc3 Qd6 (10...Be6 11.Rb1 Qc7 12.Rb2+=) 11.Rb1 (11.0-0 Be7+=) 11...Qd7= 12.h3 Be6 13.Rb6 (13.Rb2 d4 14.Na4 Qc7= (14...Ra4? 15.Bb5+-)) 13...d4 14.ed4 (14.Bb5 Nc6 15.Na4 Ba2=) 14...cd4=+ (14...Ba2? 15.Qa1 (15.Na2?! Ra2 16.Qb1 Ra7+-) 15...cd4 16.Na2+-) 15.Bb5 Nc6 16.Nd4 (16.Na4 Be7=+) 16...Qd4 17.Rc6 Kd8 18.Re6 fe6 19.0-0 Ra5 (19...Bd6 20.Re1 Be5 21.Ne2=) 20.Qf3 Kc8 (20...Bd6!?=) 21.Rb1+= Ra7 (21...Bd6 22.Ba6 Bh2 23.Kf1+=) 22.Bc6+- Qc5 (22...bc6? 23.Qc6 Rc7 24.Qc7 Kc7 25.Nb5 Kd7 26.Nd4+-) 23.Bb7 Kd7 (23...Kd8 24.Be4 f5 25.Rb8 Ke7 26.Bd5+-) 24.d4!+- Qc4 (24...Qd4 25.Nb5 Double attack (25.Nb5 Decoy)) 25.d5 Bc5? (25...e5 26.Bc6 Kd8 27.Rb8 Kc7 28.Rf8 Rf8 29.Nb5 Kd8 30.Na7 Qa2+-) 26.Qg3 Rf8 (26...g5 27.de6 Qe6 28.Rd1 Bd6+-) 27.Qg7 Kd8 28.d6 Bf2 29.Kh1 Re8 30.Qf6 Kd7 31.Qg7 Kd8 32.d7 Bb6 33.de8Q (better 33.Rd1 Bd4 34.de8R Ke8 35.Rd4 Qd4 36.Qd4 Rb7 37.Qh8 Kd7 38.Qh7 Kc6 39.Qe4 Kc7+-) 33...Ke8 34.Nb5 Qc5 35.Qg8 Ke7 36.Rf1 Qg1 37.Rg1 Rb7 (37...Ra5 38.Qg7 Kd8 39.Rd1 Bd4 40.Rd4 Ke8 41.Bc6) 38.Qh7 (38.Re1 Ba7 39.Re6 Kd7 40.Qe8) 38...Ke8 (38...Kd8 39.Rd1 Ke8 40.Qh8 Ke7 41.Rd8 Kf7 42.Rf8 Kg6 43.Qf6 Kh5 44.g4) 39.Nd6 Kd8 40.Nb7 Kc8 41.Nd6 Kd8 42.Rf1 Bf2 43.Rf2 e5 44.Rf8 1–0. ggo7801 (1835) – 35ts35 (1795), internet private online game, 2018.

5.Nf3 Bg4 6.Be2 Nbd7 (6...e6 7.0-0=) 7.0-0 (7.a6 ba6 8.Bf6 Nf6=) 7...Qa5 8.Nd4 (8.Ne5 Be2 9.Qe2 e6=) 8...Be2=+ 9.Qe2 (9.Ne2 e5=+) 9...e5 10.Nf5 (10.Nb3 Qa6 11.d3 Bd6=+) 10...Qb6 (10...Qb4 11.Bc3 Qe4 12.Qd3-/+) 11.Bc3=+ Ne4 12.Qg4 (12.Qf3 Qc5=+) 12...g6 13.Ng3 Nc3 (13...h5 14.Qf3 Ng5 15.Qe2=+) 14.Nc3 Bg7 (14...h5 15.Qh3=) 15.Nf5 (15.Rfb1 Qc7=) 15...Bf8 16.Ng3 Qc7 17.f4 f5 18.Nf5 gf5-/+ 19.Qh5 Kd8 20.fe5 Ne5 21.Rf5 Ng6 22.Raf1-/+ Bg7?? 23.Rf7+- Qe5 24.R1f5 Qe6 25.Rg7 d4 26.Qg5 Kc8 27.ed4 Qe1 28.Rf1 Qe6 29.Qg3 Ne7 30.Re1 Qf6 31.Rge7 Qd4 32.Kh1 (32…Qd8 33.Rg7+-) 1–0. Lehtonen,Artto – Lehtimaki,Anssi, FIN–chT 1div C, 1997.

5.Nf3 g6 6.Be2 (6.c4 Bg7= 7.Nc3 (7.Qb3 Qa5 8.cd5 0-0 9.dc6 Nc6) 7...Qa5 8.cd5 0-0 9.dc6 Nc6; 6.Bd3 A) 6...Nbd7 7.a6 (7.g4 h6 8.Bc3 Bg7 9.0-0 0-0) 7...Nc5 8.ab7 Bb7 9.Be5 Bg7; B) 6...Bg7 7.0-0 0-0 8.Bc3 Na6 9.Qe2 Nc5; C) 6...Na6 7.0-0 (7.Bc3 Nc5 8.0-0 Bg7 9.Bb4 Nfd7; 7.Be5 Nc5 8.Nc3 Bg7 9.0-0 Qa5) 7...Nc5 8.Bd4 Qa5 9.Nc3 Bg7; 6.Nc3 Qa5 7.Bd3 (7.h3 Nbd7 8.Bd3 Bg7 9.0-0 0-0) 7...Nbd7 8.0-0 Bg7 9.Ne2 0-0) 6...Bg7 (6...Qa5 7.Bc3 Qb6 8.a4 Nbd7 9.a5 Qc7; 6...Ra5 7.Nc3 (7.0-0 Nbd7 8.Nc3 Bg7 9.d4 0-0) 7...Bg7 8.0-0 0-0 9.Nd4 Nbd7) 7.0-0 (7.Nc3 0-0 8.0-0 Qa5 9.h3 Nbd7) 7...0-0 8.c4 (8.Bc3 Nbd7=+ (8...Na6 9.d3 Nc5) 9.Bb4 Ne4) 8...dc4 (8...Qa5 9.Bc3 (9.Nc3 dc4) 9...Qd8 10.cd5 Qd5 11.d3=+) 9.Bc4 (9.Na3!? Ra5 10.Nc4=) 9...Nbd7 (9...Qa5 10.d3=+) 10.a6 b5 11.Be2 Ba6 12.d4 Nb6 13.Nbd2 (13.Qc2 Nfd5=+) 13...Na4 14.Qc2 Nb2 (14...Nd5 15.Ne4=+) 15.Qb2 Nd7 (15...Nd5 16.Ne4=) 16.Rfc1= Qc8 (16...Qb6 17.Qb4 c5 18.dc5 Nc5 19.Nd4 Bd4 20.Qd4+=) 17.Rab1 (17.Ne4 Qc7+=) 17...Nb6 18.Nb3 (18.Ne4 Na4 19.Qb3 Qd7+=) 18...Na4 19.Qd2 Qd7 20.Ne1 (20.Ng5+=) 20...Rac8 (better 20...Bb7!?=) 21.Nd3+- Qd6 22.Nbc5 (22.Ndc5 Nc5 23.Nc5 Ra8+-) 22...Nc5 23.Rc5 (23.Nc5 Ra8 24.Qa5 Qd8 25.Qd8 Rfd8+-) 23...Rfd8 (23...Rfe8 24.f4+-) 24.Qc2 (better 24.Qc1+-) 24...Rd7? (24...b4!? 25.Nb4 Be2 26.Qe2 e5+=) 25.Rc1 (25.Nb4 Bb7 26.d5 Rdc7+-) 25...Bb7 (25...e6 26.Nb4 Bb7 27.Bf3+-) 26.Nb4 White prepares the advance d5 (26.d5 Rdc7 27.Nb4 Be5 28.dc6 Ba8+- (28...Bh2?? 29.Kh1 Ba8 30.Qc3+-)) 26...Rdc7 (26...Bf8 27.d5 (27.Nc6?! Bc6 28.Rc6 Rc6 29.Qc6 Qc6 30.Rc6 Ra7+-) 27...cd5 28.Rc8 Qb4 29.Qc5 Qc5 30.R8c5+- (worse 30.R1c5 Bc8 31.Rc8 Ra7-/+)) 27.Bb5! e5 (27...cb5 28.Rc7 Pinning (28.Rc7 Deflection)) 28.d5 Bf8 29.Rc4 (better 29.dc6 Qc5 30.Qc5 Bc5 31.Rc5+-) 29...c5+= 30.e4 (30.h3 Qb6 31.a4 Qd6+=) 30...Qb6 (30...Bh6 31.Nd3 Bc1 32.Qc1=) 31.a4+= Bd6? (better 31...Bh6 32.d6 Qd6+-) 32.Nd3 (32.Nc6 Bc6 33.dc6 Rd8+-) 32...Kg7 (32...Qa7 33.Qc3 f6 34.g3+-) 33.Qc3 f6 34.Qb2 (34.g3 h6+-) 34...Ra8 (34...Qa5 35.h3+-) 35.R4c3 (35.h3 Ba6+-) 35...Qa7 (35...Ba6+-) 36.Qc2 Rac8 (36...c4 37.Nb2+-) 37.Nb2 Ba6 (37...c4 38.Nc4 Bc5 39.Ne3+-) 38.Nc4 Bf8 39.Rb3 Bb5 (39...Rb8 40.Rcb1+-) 40.ab5 Rb7 (40...Qb7 41.b6 Rd7 42.Ra1+-) 41.b6 Qa4 42.Ra3 (42.Qb2 Ra8+-) 42...Qd7 (42...Qc2 43.Rc2 Rcb8 44.Kf1+-) 43.Rca1 (43.Rb1 Rcb8+-) 43...Be7 (43...Rcb8 44.Ra6+-) 44.Ra7 Rcb8 45.Rb7 Rb7 46.Qa4 Qc8 (46...Qa4 47.Ra4 Rb8+-) 47.Qa8 (better 47.Qc6 Qb8 48.d6 Rb6 49.Nb6 Qd6 50.Qb7+-) 47...Qd7 (47...Rb8 48.Qa7 Rb7+-) 48.h3 Kf7 49.Ra7 Qb5 50.Qb7 (50.Qb7 Qe8 51.Nd6 Kg7 52.Ne8 Kh6 53.Qe7 Kh5 54.Qf6 c4 55.Rh7) 1–0. Karathanasi,Eirhnh – Hrysogelou,A P, Greek G20, 2017.

5.Bf6 gf6 6.c3 Bf5 7.Nf3 e5 8.Qb3 Qc7 9.c4 Be6 (worse is 9...Qa5 10.Qb7 Rg8 11.Nh4+=) 10.Nc3 dc4 11.Bc4 Bc4 12.Qc4 Nd7 13.0-0 Ra5 14.Rfc1 Bd6 15.e4 Nc5 16.a4 Ne6 17.g3 0-0 18.Ra2 Bc5 19.Kf1 Qd7 20.Qe2 Bd4 21.Nh4 Kh8 22.Qf3 Qe7 23.Nf5 Qd8 24.Qh5 Ng7 25.Qg4 Nf5 26.Qf5 Qe7 27.h4 Qe6 28.Qf3 Rfa8 29.Rac2 Bc3 30.dc3 Ra4 31.Kg2 Kg7 32.h5 h6 33.Rd2 Rg8 34.Rcd1 Re8 35.Rd6 Qe7 36.Rd7 Qf8 37.R1d6 Kg8 38.Qf6 Re4?? 39.Qf5 Rc4 40.Rh6! Qg7 41.Rhd6 Rf4+/– 42.Qd3 e4 43.Qe3 Rf3 44.Qe1 Qc3 45.Qd1 Qc5 46.Qe2 Qh5-+ 47.Rb7?? Rg3!! 48.Kg3 Qe2 49.Rh6 Qf3 50.Kh4 Qf4 51.Kh3 Qh6 52.Kg2 Qg5 53.Kf1 Qg4 54.Rb2 0–1. Heinrichs,R (1795) – Egel,Amos (2000), Sparkassen Open, Nettetal GER, 2010.

6.Bc3 Qa4 =.

6.Bc3 Qd8 7.d4=+ (7.Be2 Nbd7 8.0-0 e6 9.Bb2 Bd6) 7...Ne4 8.Bd3 Bg4 9.h3 Bh5.

6.c4 A) 6...Bf5 7.Bf6 (7.cd5 Nd5 8.Nd4 Bg6 9.Nc3 Nd7) 7...gf6 8.Nd4 dc4 9.Bc4 Bg6; B) 6...Bg4 7.Bc3 (7.Nc3 Na6 8.cd5 Nd5 9.h3 Bf5) 7...Qd8 8.Bf6 gf6 9.Nc3 dc4.

6.Be2 Bg4 7.0-0 b5 =.

6.Be2 Bg4 7.Bf6 Bf3 8.Bf3 ef6 9.0-0 =.

6.Be2 Bg4 7.Bf6 gf6 8.Nd4 Bd7 (8...Be2 9.Qe2 Rg8 10.Nb3=+) 9.0-0 (9.Nb3 Qc7=) 9...e5 10.Nb3 Qc7 11.c4 dc4 12.Bc4 Rg8 (13.d4 Bh3-/+) 0–1. Woschkat,Karl_Heinz (+) – Hanison,Bernard, Match CIF–TSC, 2003.

5.e3 Nd7 6.Be2 Qb4 7.Qc1 Qg4 8.0-0 e5 9.Re1 (9.c4 Ngf6=) 9…e4=+ (10.Nd4 Qh4=+). Cornacchini,Gabriele – Luzuriaga,Norberto Horacio, TSC, 2002.

5.e3 Bg4 6.Be2 Nd7 7.0-0 Ngf6 8.d3 e6 9.Nbd2 Be7 10.Nb3 Qc7 11.Nfd2 Be2 12.Qe2 0-0 13.e4 ½–½. Nemeth,Laszlo – Bucher,Michael (2180), Cseppko op–A, 2002.

5.e3 b5 6.Be2 =.

5.e3 Nf6 6.c4 Bf5 7.d4 e6 8.Bc3 Ra8 9.Nbd2 Be7 10.Be2 (10.c5 b6 11.cb6 Qb6=) 10...0-0 11.0-0 Nbd7 12.c5 e5 13.de5 Ne4 14.Ne4 Be4 15.Bd4 Nc5 16.Bc5 (16.Nd2 Bf5=+) 16...Bc5 17.Nd4 (17.Nd2!?=+) 17...Qg5-+ (18.Nf3 Bf3 19.Bf3 Qe5-+) 0–1. Smith,Simon – Schmickt,Bernhard, corr or02–024, 2002.

5.e3 Nf6 6.Be2 =.

6.Bc3 Ra8 =.

6.c4 e6 7.h3 Bf3 8.Qf3 Nd7 9.cd5 cd5 10.Nc3 Ngf6 11.Bb5 Ba3 12.Ba3 Ra3 13.0-0 0-0 14.Rfc1 Qa5 15.Bd7 Nd7 16.Rab1 Ne5 17.Qg3 Nc4 18.Rb7 Nd2 19.Qc7 h6 20.Rc2 Nc4 21.Qa5 Ra5 22.Rc7 Rfa8 ½–½. Benussi,Alberto – Simmelink,Joop Theo, corr Kuhlmann mem, 1999.

6.c4 Nf6 7.Qb3 Nbd7 8.Bf6 Nc5 9.Qb2+= ef6 10.d4 Ne4 11.cd5+= cd5 12.Qb7+/– Bd6 13.Bb5 Bd7 14.Bd3 0-0 15.Be4 de4 16.Qe4 Re8 17.Qc2 Qa8 18.0-0 ½–½. Woschkat,Karl_Heinz (1735) – Van Bommel,Ton (1755), IECG, 1999.

6.c4 Nf6 7.Qb3 Bf3 8.gf3 b6 9.Bf6 ef6 10.cd5 Rd5 11.d4 =.

6.c4 Nf6 7.h3 Bf3 8.Qf3 dc4 9.Bc4 =.

6.Be2 Nd7 7.0-0 e6 8.d4 b5 9.Nbd2= Ngf6 10.h3 Bh5 11.Bd3 Be7 12.e4 0-0 13.e5= Ne8 14.c3 Bg6 15.Bg6= fg6 16.a4 ½–½. Woschkat,Karl_Heinz – Herschel,Rudolf, BdF, 1998.

6.Be2 Nd7 7.0-0 Ngf6 8.d4 (8.Bc3 Ra7=) 8...e6 (8...Qa8 9.a3=) 9.Nbd2 b5 10.h3 Bh5 11.Ne5 Be2 12.Qe2 Qa8 13.e4 Ne5 14.de5 Ne4 15.Ne4 de4 16.Qe4 Bc5 17.Rfd1 0-0 18.a3 Ra4 19.Qf3 Ra6 20.Qd3 Qa7 21.Qf3 Ra4 22.Rab1 h6 23.Rd2 Qa6 24.Rd7 Ba3=+ 25.Ba3 Ra3 26.Rb3 Rb3-/+ (27.cb3 Qa1 28.Rd1 Qe5 29.Qc6 Qe2-/+) 0–1. Woschkat,Karl_Heinz – Borst,John, IECG, 1997.

6.h3 Bf3 7.Qf3 Nd7 =.

6.h3 Bf5 =.

5.d4 Qa5 6.Bc3 Qa4 =.

5.g3 e5=+ 6.Bg2 Be6 7.0-0 Bd6 8.d3 Ne7 9.Nbd2 Ra5 10.c4 0-0 11.cd5 cd5=+ 12.Nb3 Ra7 13.d4 e4 14.Ne1 Qc7 15.f3 f5 16.e3 Nd7 17.Rf2 Rfa8 18.fe4 fe4-/+ 19.Rc2 Qd8 20.Bc1 Nf5 21.Qe2 Qg5 22.Bh3 Bg3 23.hg3 Qg3 24.Bg2 Rf8 25.a4 Raa8 26.Qf2 Qg6= Threatens Ng3 27.Qd2 Nh4 28.Ba3 Nf3 29.Nf3+= ef3 30.Bf8 Rf8 31.Nc5 Bh3 32.Nd7 Bd7 33.Qc3 Bf5 34.Rf2= Be4 35.Raf1 h5 36.Kh2 Qd6 37.Kg1 Qg3?? 38.Qc5+= Qg5 39.Qd6 Rf5= 40.Re1 Kh7 41.Qh2 Qg4 42.Qh3 Rg5-/+ The mate threat is Qxh3 43.Qg4 Rg4 44.a5 h4 45.Kh2 fg2 46.Rf4 (better is 46.Rf7!?+=). Woschkat,Karl_Heinz – Stock, BdF, 1994.

5.c4 e6 6.e3 Qa5 7.Be2 Na6 (7...dc4 8.Bc4 Nbd7 9.0-0=+) 8.Bc3 Bb4 9.Bb2 Be7 10.0-0 0-0 11.d4 Ne4 12.Nbd2 Nc3 13.Bc3 Qc3 14.Qb3 Qb3 15.ab3 Bd7 16.Ne5 Bc8 17.Nd3 f6 18.b4 Bd7 19.Nc5 Bc5 (19...Nc5 20.bc5 e5 21.cd5 cd5 22.Rfb1+=) 20.bc5+/– (< 20.dc5 Nb4 21.Rfb1 Ra1 22.Ra1 d4=+) 20...Nc7 21.cd5 ed5 22.f3 Nb5 23.Bb5 cb5 24.e4 Bc6 25.Kf2 Ra4 26.Ra4 ba4 27.Ra1 Kf7 (better is 27...de4!? 28.fe4 f5+=) 28.ed5+- Bd5 29.Ra4 Ke6 30.Ke3 Bc6 31.Ra5 f5 32.Nc4 g5 33.Ra2 Bd5 34.Kd3 (34…f4 35.Re2 Kf6 36.Nb6+-) 1–0. Borrmann,Fritz – Ogden,Kimberly, corr or03–032, 2003.

5.Bd4 Ra5 6.e3 b5 =.

5.Bd4 Ra5 6.e3 Nbd7 =.

5.e3 Nbd7 6.c4 Qa5 7.Qc2 =+.

5.e3 Nbd7 6.c4 e5 7.cd5 cd5 (7...Nd5 8.a6 e4 9.ab7 Bb7 10.Nd4=) 8.Bb5 (8.Ne5!? Qa5 9.Nd7 Bd7 10.Bf6 gf6 11.Nc3+/–) 8...Ra5 9.Bd7 Bd7 10.Be5 Bb4 11.0-0 0-0 12.Qc1 Rc5 13.Qb2 Ba5 14.Bd6 Rb5 15.Qc1 Re8 16.a4 Rb6 17.Bc7 Rb1 18.Bd8 Rc1 19.Bf6?? (better is 19.Ba5 Ra1 20.Ra1+=) 19...Rf1-+ 20.Rf1 gf6 21.Rb1 Bc6 22.Nd4 Bd2 23.g3 Bc3 (23...Ra8 24.Nc6 bc6 25.Rb2-+) 24.Nf5 (24.Nc6 bc6 25.Rc1 d4 26.ed4 Bd4 27.Rc6 Re2-+) 24...Bd7 25.Nd6 Re6 26.Nb7 Ba4 27.Nc5 Bc2?? (better is 27...Be8 28.Rb3 d4 29.Ne6 fe6 30.ed4 Bd4-+) 28.Rb8+- Kg7 29.Ne6 fe6 30.Rc8 d4 31.ed4 Bd4 32.Rc2 e5 33.Kg2 f5 34.h4 h5 35.Rc6 f4? (better is 35...Bb2+-) 36.gf4 ef4 37.Kf3 Be5 38.Ke4 Bb8 (38...Bb2+-) 39.f3 (39...Kf7 40.Rb6+-) 1–0. lidl4 – Dreamcatcher, Live Game Caissa's Web, 2004.

5.e3 Nbd7 6.Be2 Ra5 7.0-0 Qc7 8.c4 e6 (8...e5 9.cd5 cd5 10.Nc3=) 9.Qc2 (9.Bc3 Ra8=) 9...Bd6 (9...dc4 10.Bc4 Bd6 11.d4=) 10.Bc3+= Ra7 11.Bf6 Nf6 12.c5 Be7 13.d4 b6 (13...0-0 14.Nc3+=) 14.cb6+/– Qb6 15.Rc1 Rc7 (15...Bd7 16.Ne5+=) 16.Nc3+/– Ba6 (16...Bd6 17.Na4 Qa5 18.Bd3+=) 17.Rab1 Qa7 18.Ba6 Qa6 19.Rb8 Rc8 (19...Bd8 20.Nb5 Qb5 21.Rb5 cb5 22.Qb2+-) 20.Qa4+- Rb8?? (better is 20...Qa4 21.Rc8 Kd7 22.Rh8 Qa6 23.Ne5 Kc7+-) 21.Qa6 1–0. woschkat (2350) – cromete (2250), net–chess.com, 2002.

5.e3 Bf5 6.c4 e6 7.Nd4 Bb1 8.Rb1 Bb4 (8...Qa5 9.Ba1+=) 9.Be2 (9.Ne6!? fe6 10.Bf6 Qf6 11.Rb4+-) 9...0-0+= 10.0-0 Ne4 (10...Qa5 11.Nc2 Be7 12.Bf6 Bf6 13.Rb7+=) 11.Nb3 Nd7 12.Qc2 (12.a6 ba6 13.Qc2 Bd6+-) 12...Ba5+= 13.d3 Nef6 14.Ba1 Bb4 15.Nd4 Qe7 16.Qb3 Bc5 17.Qb7 Bd4 18.Bd4 e5 19.Bc3 Ra2 20.Bf3 Rc2? (better 20...Qd6+=) 21.Qb3+- Rc3 22.Qc3 e4 23.de4 de4 24.Be2 h5 25.Rfd1 c5 (25...Ne5 26.Qd4+-) 26.Rb7 Qe6 27.Bh5! Ne5 (27...Nh5 28.Rd5 Double attack (28.Rbd7 Deflection; 28.Rd5 Decoy; 28.Rbd7 Overloading)) 28.Be2 Nfg4 (28...Ra8 29.Qb3+-) 29.h3 Nf2 (29...Nf6+-) 30.Kf2 Qf6 31.Kg3 1–0. Shohat,Yotam (2155) – Emanuel,Yahav (2200), ch–ISR Youth U18 (6), 2019.

5.g3 Qa5 6.Bg2 Qb6 7.Qc1 (7.Bd4 Qd8=) 7...e6 (7...Bf5 8.c4=) 8.0-0 (8.Bf6 gf6 9.Nc3 Bb4=) 8...Bd6 (8...Nbd7 9.d3=+) 9.d3 (9.Bf6 gf6 10.c4 dc4 11.Qc4 e5=) 9...Nbd7=+ 10.Nbd2 e5 11.c4 0-0 (11...d4 12.Nb3=+) 12.h3 (12.d4 ed4 13.Nd4 Be5=) 12...e4 (12...d4 13.Qc2=+) 13.Nd4 (13.de4 de4 14.Ng5 e3=) 13...ed3-/+ 14.ed3 (14.cd5 de2 (14...Nd5?! 15.Nc4 Qc5 16.e4=) 15.Re1 Ne5-/+ (15...Nd5?! 16.Nc4 Qc5 17.Nf5=)) 14...Ne5 15.Qc2 Nd3 16.Bc3 (16.Qd3 Qb2 17.cd5 cd5-/+ (17...Nd5?! 18.Nc4 Qb4 19.Rfb1=)) 16...Nb4 (16...Ne5 17.Rfb1 Qc7 18.cd5 Nd5 19.Bd5 cd5 20.Nb5=+) 17.Qb2 (17.Qb1 Ra3 18.Nb5 cb5 19.Bb4 Bb4 (19...dc4? 20.Ba3 Ba3 21.Nc4+-) 20.Qb4 Qa7 21.cd5 Rg3-/+) 17...Bc5 18.Rfb1 (18.N4f3!?-/+) 18...Qa7-+ 19.N2f3 (19.cd5 Nd3 (19...cd5?! 20.Nb5 Qb6 21.Nd4=) 20.Qc2 Nf2-+) 19...Nd3 20.Qd2? (better is 20.Qb3 Ne4 21.cd5 cd5 22.Rf1-+) 20...dc4 21.Qg5 (21.Bf1 Ne4 22.Qc2-+) 21...Ne4 22.Qh5 (22.Nc6 Ng5 23.Na7 Nf3 24.Bf3 Ra7 25.Bd5-+) 22...Nc3 23.Ng5 (23.Nc6 bc6 24.Ng5 Bf2 25.Kh1 h6-+) 23...h6 24.Ndf3 Bf2 25.Kh2 Bg3! 26.Kg3 Ne2 27.Kh2 Qb8 (28.Ne5 Qe5 29.Kh1 Nf2) 0–1. ookii (1790) – halocan (1705), internet, 2007.

6.Bc3 Qa4 7.Be5 =.

6.c4 Nbd7 7.Be2 =.

6.c4 e6 7.cd5 cd5 8.Be2 Be7 9.0-0 0-0 10.d4 (10.Bc3 Qd8=) 10...Bd7 11.Qb3 Rc8 (11...Nc6 12.Nc3= (12.Qb7 Rfb8 13.Qb3 Rb3 14.ab3 Qd8-+)) 12.Nc3 (12.Qb7 Rc2 13.Nbd2 Bd6+=) 12...Bc6 (12...Nc6 13.Ne5= (13.Qb7?? Rcb8 14.Qb3 Rb3 15.ab3 Qd8-+)) 13.Rfc1 Nbd7 14.Bd3 Bd6 15.a4 Nb6 16.Ba3 (16.Ne5 Ba4 17.Na4 Rc1 18.Bc1 Qe1 19.Bf1 Be5 20.de5 Ng4+/–) 16...Ba3 (16...Ba4? 17.Na4 Qa4 18.Qa4 Rc1 19.Rc1 Bh2 20.Kh2 Ra4 21.Be7+-) 17.Ra3 Ba4 (17...Nc4 18.Ra2= (< 18.Bc4 dc4 19.Qa2 b5 20.ab5 Qa3 21.Qa3 Ra3 22.bc6 Rc6-/+)) 18.Qa2 Ne4 19.Be4 de4 20.Nd2 Nd5 21.Nde4+= Nc3 22.Rcc3 Rc3 23.Nc3 Rc8 24.Qa1 b5 25.h3 Rc4 26.Ne4+= h6 27.Ra2 Qc7 28.Nc5 e5 29.Rd2 Qa5 30.Qb2 ed4 (30...Rb4 31.Qa2 ed4 32.Rd4 (< 32.ed4 Rd4 33.Nd3 Qc3-+) 32...Rd4 33.ed4=) ½–½. Jacubowski,Andreas – Woschkat,Karl_Heinz, HL015, 1998.

6.c4 e6 7.cd5 Nd5 8.e4 Nf6 9.Bf6 gf6 10.Qb3 =.

6.Be2 b5 7.Bc3 Qa4 8.Bd4 =.

6.Be2 Qb6 7.Bc3 Nbd7 8.0-0 Ne4 9.Bd4 c5 10.Bc3 e5 11.Be5 Ne5 12.Ne5 Bd6 13.Nf3 0-0 14.c4 d4 15.Qc2 Nf6 16.ed4 cd4 17.d3 Re8= 18.Bd1 Bd7 19.Nbd2 Bb4 20.Rb1 Qd6 21.Ng5 Qe7 22.Bf3+= h6 23.Nge4 Ne4 24.Ne4 Bc6 25.Bg4 Ra3= 26.f3 Ba5 27.Qb2 Rd3=+ 28.c5 Rd8 29.Bf5 Qe5-/+ 30.Qc2 Re3 (31.Bh7 Kf8-/+) 0–1. Orr,Michael – Myers,Charlie, WCCF, 2001.

6.Be2 Bg4 7.0-0 Nbd7 8.Ne5 Be2 9.Qe2 Qb6 10.Nd3 e6 11.f4 Be7 12.Qf3 0-0 13.Qg3 c5 14.a4 Ra6 15.Bc3 Rfa8 16.a5 Qd8 17.Ne5 Ne4 18.Qh3 Nc3 19.Nc3 Ne5 20.fe5 Ra5 21.Rab1 Qd7 22.Qf3 Rf8 23.Qg3 b5 24.Ne2 Ra2 25.Rbc1 b4 26.Nf4 Qa4 27.Qg4 g6 (27...Rc2 28.Ne6 g6 29.Nf8 Rc1 30.Rc1 Bf8 31.Qf4+=) 28.d3 c4 29.Rf2 Ra1 30.Rff1 Rc1 31.Rc1 Qa3 32.Rf1 b3 33.cb3 cb3 (33...Qb3 34.Ne6 h5 35.Qg3=) 34.d4 b2 35.Qe2 Qa1 36.Qd1 Qd1 37.Rd1 Ba3 38.Ne2 Rc8 39.Kf2 Rc1 (39...Rc1 40.Rc1 bc1R 41.Nc1 Bc1-+) 0–1. Pintonello – Alvarez Villar (2275), IECG, 2004.

7.0-0 Qa5 8.Be5 Be5 9.Ne5 Nbd7 10.Nd7 Bd7 11.d4 Qc7 12.c4 0-0 13.Nc3 Ra3 14.Rc1 (14.Qd2!?=) 14...Qa5=+ 15.Qc2 (15.Nb1 Ra2 16.Nc3=+) 15...dc4 (Better is 15...b5-/+) 16.Bc4= Nd5 17.Nb1 Nb4 18.Qb2+/– Ra2 19.Ba2+- Na2 20.Rc2 Nb4 21.Rc4 Nd5 22.Qb7 Bc8? 23.Qc6 Ba6 24.Ra4 Qa4 25.Qa4 Bf1 26.Kf1 Rc8 27.Qd7 Rc1 28.Ke2 g6 29.Nd2 Rc2 30.f4 Kg7 31.h3 Nb6 32.Qb5 Nd5 33.Qb8 Nf6 34.Qb3 Rc7 35.e4 Nh5 36.g3 Rd7 37.Qb5 Rc7 38.Qe5. b4_player (2180) – NN, GameColony.com, 2002.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 c5 12.c4=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Qa7 15.Be4 Ne4 16.cd5 cd4 17.Qb4 ed5 18.ed4 Qa4 19.Qb2 Bf5 20.Nd2 Nd2 21.Qd2 Rfc8 22.Qe3 Qc2 23.Qf2 Ra4 24.Nf3 Rca8 25.Qe3 Ra2 26.Ra2 Qa2 27.Re1 Qa4 28.Nd2 Qb4 29.Nb3 h6 30.Nc5? Ra2 31.Qe8 Kh7 32.Qe5 Bb1 33.Rd1 Qb2 34.Qd5 Qf2 35.Kh1 Re2 36.h3 Be4! 37.Qe4 Re4 38.Ne4 Qe2 39.Nc3 Qc2 40.d5 Qc3 41.d6 Qc2 42.Rd4 Qc1 43.Kh2 Qe3 44.Rb4 b6 45.d7 Qd2 46.Kg3 Qd7 47.Rb6 Qd3 48.Kh2 Qd4 49.Rb2 Qb2 0–1. b4_player (2175) – _Drunken_Master_ (2255), GameColony.com, 2003.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Qa7 15.Be4 Ne4 16.cd5 cd4 17.Qb4 ed5=+ 18.ed4 Qa4 19.Qb2 Bf5 20.Nd2 Nd2 21.Qd2 Rfc8 22.Qe3 Qc2 23.Qf2 Ra4-/+ 24.Nf3 Rca8 25.Qe3 Ra2 26.Ra2 Qa2 27.Re1 Qa4 28.Nd2 Qb5 29.Nf3 Be4 30.Ng5 Re8 31.Ne4 Re4 32.Qc3 Re1 33.Qe1 h6 34.Qe5 Qc4 35.Kf2 b5 36.h4 b4 37.Ke3?? b3 0–1. b4_player (2235) – _Drunken_Master_ (2465), GameColony.com, 2003.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 cd4 15.ed4 dc4 16.Bc4=+.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Rd8 15.Qc2=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qc2 Qb6 15.Be4 Ne4 16.cd5 ed5 17.dc5 Qc5 18.Qc5 Nc5=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qc2 Rd8=.

6.c4 Qa5 7.Bc3 Qb6 8.Bf6 ef6 9.cd5 Bf3 10.gf3 cd5 11.Nc3 +=.

6.c4 e6 7.Qb3 Nbd7 8.Be2 Bf3 9.Bf3 dc4 10.Qc4= Bd6 11.0-0 0-0 12.d4 Qa5 13.Nc3 Ra7 14.e4 e5 15.d5 Bc5 16.Qb3 Bd4 17.Rfd1 Ra6 18.Rac1 Rb6 19.Qc2 cd5 20.ed5 Rc8 21.Rd3 Qb4 22.Ba1 e4 23.Rd4 Qd4 24.Rd1 Rc3 25.Bc3 Qc5 26.Be4 Ne4 27.Qe4 Qc3 (28.a4 Rb4-+) 0–1. Woschkat,Karl_Heinz (1735) – Gallet,Gilles (1750), IECG, 1999.

6.Be2 e6 7.0-0 Bd6 8.Bc3 0-0 =.

6.Be2 e6 7.0-0 Bd6 8.d3 Qa5 9.Nbd2 Nbd7 10.h3 Bf3 11.Bf3 0-0 12.c4 b5 13.cb5 Qb5 14.Qc2 Rfb8 15.Rfb1 Qa4 16.Nb3 c5 17.Be2 e5 18.Qd1 Rb6 19.Nd2 Rba6 20.Qa4 Ra4 21.a3 Kf8 22.e4 de4 23.de4 Rb8 24.Bd3 Bc7 25.Bc2 Ra7 26.Nc4 Rba8 27.Bc3 (withdraw, 0–1). Chatterjee – Poschmann, email 4AMM–F 1998.

6.Be2 e6 7.0-0 Bd6 8.h3 Bf3 9.Bf3 0-0 10.Bc3 =.

6.Be2 e6 7.0-0 Bd6 8.h3 Bh5 9.d4 Ra5 10.Nbd2 b5 11.a3 0-0 12.Ne5 Be2 13.Qe2 Qe7 Increasing the pressure on the isolated pawn on a3 14.Nb3 Ra8 15.Qe1 Nfd7 16.Qc1 f6 17.Nf3 Nb6 18.Re1 Nc4 19.e4 Ba3 20.Ba3=+ Ra3 21.Nc5 Ra1-/+ 22.Qa1 e5 23.c3 de4 24.Ne4 f5 25.Nc5 e4 26.Qc1 Nd7 27.Nd7 Qd7 28.Nd2 Nd2 29.Qd2 Qd5 30.Qe3 Re8 31.Qf4 c5 32.Qe3 cd4 33.cd4 Rd8 34.Rd1 b4 35.Qd2 Qc4 (35...b3 36.Qb4-/+) ½–½. Tain,Julio Antonio – Labahn,Wolfgang, corr SOK–87–03, 1990.

6.h3 Bf3 7.Qf3 Nbd7 =.

4.Bc3 d5 5.e3 Ne4 6.Nf3 Nc3 7.Nc3 Bg4 (7...Ra5 8.Be2=+) 8.Be2 (8.Qb1 Qc7 (worse 8...Ra5 9.Qb7 Bf3 10.Rb1+/-) 9.Qb6 Qb6 10.ab6 Nd7=) 8...Nd7 (8...Ra5 9.Rb1 b5 10.Ne5 Be2 11.Qe2=+) 9.Nd4 (9.Rb1 Ra7=) 9...Be2 10.Qe2 e5 11.Nb3 Bd6 12.d4 (12.0-0 Qc7=) 12...0-0 13.de5 (13.0-0 Re8=+) 13...Ne5 (13...Be5 14.Qd2-/+) 14.0-0=+ Qh4 15.f4 Nc4 16.g3 Qe7 Attacking the backward pawn on e3 17.e4 Na5 (17...Rfe8 18.Rfe1 Bb4 19.Qd3-/+) 18.ed5= Nb3 19.ab3? (better 19.Qe7 Be7 20.cb3= (worse 20.ab3 Ra1 21.Ra1 Bf6-/+)) 19...Ra1-+ 20.Ra1 Qf6 21.Qc4 (21.Qe3 Bb4 22.d6 Bc3-+ (22...Qc3?! 23.Qc3 Bc3 24.Rd1-+)) 21...cd5 22.Qd5 Qc3 23.Rd1 (23.Rf1 Rd8 24.Qb7 Qc2-+) 23...Bc5 24.Kf1 (24.Kg2 Qc2 25.Rd2 Qc1-+) 24...b6 (better 24...Qc2!? 25.Rd2 Qc1 26.Kg2-+) 25.Qd3 Qf6 26.c3 (26.Qe4 Rc8-+) 26...Re8 (better 26...Qe6!? 27.Qd5 Qe3 28.Kg2 Qc3 29.Qd3-+) 27.b4 Bf8 28.Qd4 (28.Qd7 Re3 29.Rd3 Re6-+) 28...Qd4 (better 28...Qc6!? 29.Kf2-+) 29.Rd4 (worse 29.cd4 Bb4 30.Rb1 Ba5-+) 29...Rc8 30.Rd3 g6 31.Ke2 Bg7 (31...h6 32.Kd1-+) 32.Kd2 (32.Rd6 Rc3 33.Rb6 Rc2 34.Kf3 Bd4 35.Rb8 Kg7-+) 32...f5 33.Kc2 Bf6 34.Kb3 b5 35.Rd5 (35.Kc2-+) 35...Rc3 36.Ka2 Rc2 37.Kb3 (37.Ka3 Rh2 38.Rb5 Rh3-+) 37...Rh2 (37...Rb2 38.Ka3 Rh2 39.Rb5-+) 38.Rb5 Rg2 39.Rb7 Rg3 40.Kc4 h5 41.b5 h4 (41...Rf3 42.b6-+) 42.b6 Rg1 (42...Rg4 43.Rc7 Be5 44.Kd5 Bf4 45.Rc3-+) 43.Ra7 Rc1 (better 43...Rf1 44.Kd5 Rf4 45.Ke6-+) 44.Kb5? (44.Kd3-+) 44...Rb1 45.Kc6 (45.Kc5 h3 46.Ra2 Bb2-+) 45...h3 (better 45...Rb6! 46.Kc5 Re6 47.Rc7-+) 46.Ra2 Bd4 47.b7 Kg7 (better 47...Be3 48.Rh2 Rb6 49.Kd7 Rb7 50.Ke6 Rh7-+) 48.Kc7 (48.Rh2 Be3 49.Rh3 Bf4 50.Ra3-+) 48...Bg1 (better 48...Be3 49.Kc6 Bf4 50.Ra7-+) 49.b8Q Rb8 50.Kb8 h2 51.Ra7 (51.Ra7 Ba7 52.Ka7 g5 53.fg5 f4 54.Kb6 f3 55.Kc5 f2 56.Kb4 h1Q 57.Kb5 Qd5 58.Ka6 f1Q 59.Kb6 Qd6 60.Ka5 Qfa6). zembelek (2045) - TheNagus (2110), Rated Blitz game, lichess.org, 2014.

4.Nc3 e5 5.Nf3 d6 6.e4=.

4.Nc3 g6 5.e4 (5.Ne4 d5 6.Nf6 ef6=) 5...Bg7 6.e5 Nd5 7.Nd5 cd5 8.d4 (8.Nf3 0-0=) 8...Qa5 9.c3 d6 10.Nf3 (10.ed6 Qb6 11.Qb3 Qd6=+) 10...0-0 (10...de5 11.Ne5 Nc6 12.f4=+) 11.Be2 (11.ed6 Re8=) 11...Bg4 (11...de5 12.Ne5 Nc6 13.f4=+) 12.0-0 (12.ed6 e6=) 12...Nc6 (better 12...Bf3 13.Bf3 de5 14.de5 e6=+ (worse 14...Be5 15.Qd5 Qd5 16.Bd5=)) 13.h3?? (better 13.ed6 ed6 14.Re1=) 13...Bf3-+ 14.Bf3 e6 (better 14...de5 15.Qb3 e6-+) 15.ed6= Qd8 (15...Rfd8 16.Qb3=) 16.c4 (16.a4 Qd7= (worse 16...Qd6 17.Ba3 Qc7 18.Bf8 Bf8 19.Be2+/-)) 16...Qd6 (better 16...dc4 17.Bc6 bc6=+) 17.c5? (better 17.cd5!? ed5 18.Qb3=) 17...Qc7 (17...Qf4 18.g3 Qf6 19.Qb3-/+) 18.a3 Ra6 (18...Qf4!?-/+) 19.Rb1 (19.Be2 Ra7 20.Qd2 Ra4=+) 19...Rfa8 20.Be2 Ra4 21.Qd2? (better 21.Bb5 Rd4 22.Bd4 Nd4 23.Qd3=+) 21...Nd4-+ (21...Bd4?! 22.Bb5 Bb2 23.Ba4 Ba3 24.Bc6 Qc6 25.Rb6=+) 22.Bd3 (better 22.Bb5 Nb5 23.Bg7 Na3 24.Bf6-+) 22...Nc6 (22...Nb3 23.Qc2 Bb2 24.Qb3 Ba3 25.Qb7 Qb7 26.Rb7 Bc5 27.Rc1-+) 23.Qe3? (better 23.Bb5!? R4a7 24.Bg7 Kg7 25.a4-/+) 23...Bb2-+ 24.Rb2 Ra3 25.Rfb1 Qe5 26.Qe5 Ne5 27.Be2 Rc8 28.Rb7 Rc5 29.f4 Rc2?? (29...Nc4 30.Rd7 Rc6 31.Rb8 Kg7 32.Re8-+) 30.Bf1?? (better 30.Bd1 Rd2 31.fe5+=) 30...Nc4-+ 31.Rb8 Kg7 32.Rc8 (32.Bc4 dc4 33.R8b2 Rac3-+) 32...Raa2 33.Rb7 (33.Kh1-+) 33...Ne3 (better 33...Ra1 34.Rb3-+) 34.Rcc7 (34.Rcc7 Ra1 35.Rc2 Rf1 36.Kh2 Nc2 37.g3-+). weeza (2410) - zumpili (2460), Rated Bullet game, lichess.org, 2021.

4.c4 Na6 5.e3 Qa5 6.Nc3 d6 7.Bd3 Nc5 8.Bc2 Be6 (8...Qb4 9.Qb1 Qc4+=) 9.Qe2? (better is 9.d3!?=) 9...Qb4-/+ 10.Nd1 (10.Bb3 Bf5 11.d4 Nb3 12.ab3 Ra1 13.Ba1 Qb3-/+) 10...Bc4-+ 11.a3 Qb5 (11...Be2?! 12.ab4 Ra1 13.Ne2 Rd1 14.Kd1-/+) 12.Qf3 Bd3 13.Bf6 Bc2 (13...Bc2 14.Ne2 Nd3 15.Kf1 ef6-+; 13...gf6?! 14.Bd3 Nd3 15.Kf1-+; 13...ef6?! 14.Bd3 Nd3 15.Kf1-+) 0–1. onny555 (1810) – gamebiteer (2240), gameknot.com, 2012.

4.c4 d6 5.Nf3 e5 6.g3 Qa5 7.Bg2 Be6 8.Bc3 Qc5 9.d3 Be7 10.0-0 0-0 11.Nbd2 Nbd7 12.a4 Qb6 13.a5 Qc7 ½–½. Kruimer,Wim (1700) – Rosner,Dirk (1700), TSC, 2001.

4.e3 Qa5 5.Nf3 (--> 3.ba5 Qa5 4.Nf3 Nf6 5.e3).

4.e3 Ra5 5.c4 (5.Nf3 d6=) 5...e6 (5...d5 6.d4=) 6.Nf3 b6 7.d4 Bb4 (7...d5 8.Nbd2=) 8.Nbd2 (8.Bc3 Bc3 9.Nc3 Ba6=) 8...0-0 (8...d5 9.Qb3 Bd6 10.Bd3=) 9.Bd3 (9.Qb3 Na6=) 9...d5 10.0-0 Qc7 (10...Ba6 11.Qb3 Bd6 12.e4 de4 13.Ne4 Ne4 14.Be4+=) 11.Nb3 Ra8 12.c5 bc5 13.a3 (13.Nc5 Bc5 14.dc5 Nbd7=) 13...c4 14.ab4 Opening the a–file gets Black a lot of play 14...Ra1 15.Ba1 (15.Bh7 Kh7 16.Qc2 Kg8 17.Na1 Qd6=) 15...cd3 16.Qd3? (better 16.Ne5=) 16...Ba6-+ 17.Qc2 Bf1 18.Kf1 Nbd7 (18...Na6 19.Bc3-+) 19.Nc5 (19.Kg1 Ra8-+) 19...Ra8 20.Bc3 h6 (20...Nc5 21.bc5 Ne4 22.Kg1-+) 21.Kg1 (21.Qb2 Nb6-+) 21...Qa7 (21...Nc5 22.bc5 Ne4 23.Nd2-+) 22.h3 (22.Nb3 Qa2 23.Qd1 Ne4-+) 22...Qa2 23.Bb2 (23.Qa2 Ra2 24.Ne5 Rc2 25.Ned7 Nd7 26.Nd7 Rc3-+) 23...Nc5 24.dc5 Rb8 (24...Ra4!? 25.Ne1 Rb4 26.Bf6 Qc2 27.Nc2-+) 25.Qc3 Qa4 26.Ba3 Ne4 (26...Ne4 27.Qe5 Re8-+ (27...Qa3?! 28.Qb8 Kh7 29.Qf4-/+)) 0–1. Zylla,Johannes – Sowden,Edward C, corr Partridge mem–6, 1995.

4.e3 d6 5.Bc3 Ne4 (worse 5...Ra5 6.Ba5 Qa5 7.Nf3+=) 6.Bd3 Nc3 7.Nc3 Qa5 8.Nf3 Bg4 (8...Nd7 9.0-0=+) 9.0-0 Nd7 10.h3 Bh5 11.Rb1 b5 12.Be2 e6 13.Nd4 Be2 14.Nde2 (14.Qe2 Qc7 15.Qg4=+) 14...Be7 (14...b4 15.Ne4-/+) 15.Nd4=+ Qc7 16.Qg4 0-0 17.Qg3 Bf6 18.Nde2 Ne5 19.Nf4 Nc4 20.d4 Nd2 21.Nh5 Qe7 22.Rfe1 Nb1 23.Ne4 Kh8?? (better 23...Bd4 24.ed4 f5-/+) 24.Nef6+- g6 (24...Rg8 25.Ng8 Rg8 26.Rb1 g6+-) 25.Rb1 (better 25.Qg5 gh5 26.Qh6 Qf6 27.Qf6 Kg8 28.Rb1 Ra2 29.Rb3+-) 25...gh5= 26.Nh5 (better 26.Qf4!? Rg8 27.Ng8 Kg8 28.e4=) 26...Rg8-/+ 27.Qf3 d5 28.Rb2 Rg5 29.Qf6 Qf6 30.Nf6 Rf5 (30...Ra7!?-/+) 31.Nd7=+ Ra7 32.Ne5 Rc7 33.f4 h5 (better 33...Rh5!?=+) 34.g4+= hg4 35.hg4 Rf6 36.g5 Rf5 37.Kg2 (37.Ng4 Kg7=) 37...Kg7 38.Nf3 f6 39.Nh4 fg5 40.Nf5 ef5 41.fg5 Kg6 42.Kg3 Kg5 43.Rb1 Ra7 44.Rb2 Ra3 45.Kf3 f4 46.Rb3 Ra2 47.c3 (47.Rc3 Ra6=) 47...fe3 (47...Rh2 48.ef4 Kf5 49.Kg3-+) 48.Ke3=+ Rh2 49.Kd3 Kf4 50.Rb4 (50.Rb1 Kf5=+) 50...Rh3 51.Kc2 Ke3 (51...Rh1 52.Rb3=+) 52.Rb1 Rh2 53.Kb3 Kd3 54.Rd1 Rd2 55.Rf1 Re2 56.Rd1 Rd2 57.Rf1 Re2 58.Rd1 Ke3 59.Rf1 Kd2 60.Rf6 c5 (better 60...Re1!? 61.Rc6 Rb1 62.Ka3 Rf1=) 61.dc5+- Re3?? (better 61...Re4 62.Rd6 Ke3+-) 62.Kb4+- Rc3?? (62...Re8 63.c6 Re4 64.Kb5 Kc3+-) 63.Kb5 (better 63.Rf2 Ke3 64.Kc3 d4 65.Kc2 Kf2 66.Kd3+-) 63...d4= 64.c6 d3 65.Rf7 Kc1 66.Rf1 Kc2 67.Kb6 d2 68.Rf2 Kc1 69.Rf1 Kb2 70.c7 Rc1 71.Rf2 Rc7 72.Rd2 ½–½. 2007michas (1605) – desperad0 (1730), gameknot.com, 2017.

4.e3 g6 5.c4 Bg7 6.Nc3 0-0 7.Nf3 Ra5 8.Be2 Rh5 (8...d5 9.cd5 cd5 10.Rc1=) 9.Nd4 Ra5 10.0-0 d5 11.cd5 Nd5 12.Nd5 Rd5 13.Bf3 (13.Qc2=) 13...Rd4 (better 13...c5!? 14.Rc1 b6=+ (worse 14...Bd4 15.ed4 Rd6 16.dc5 Rd2 17.Qb3+-; 14...cd4?! 15.Rc8 Qc8 16.Bd5=)) 14.Bd4+- Bd4 15.ed4 Qd4 16.Re1 Bf5 (16...e6 17.Re4 Qf6 18.d4+-) 17.Re7 Nd7 18.Qb3?? (better 18.Qe1+-) 18...Qa1-+ 19.Bd1 (19.Qd1 Qa2 20.d4 Be6-+) 19...Qf6 (better 19...Nc5 20.Qf3 Be4 21.Qg4-+) 20.Re3 Nc5 21.Qb6 Nd3 (better 21...Qa1 22.Re1 Qd4-+) 22.Rf3 (22.Bc2 Nf4 23.Bf5 Qf5 24.g3-+) 22...Qa1 23.Qb3 (23.h3 Qd1 24.Kh2 Qd2 25.a3-+) 23...Qb2 (better 23...Nc5 24.h3 Nb3 25.ab3 Qd1 26.Kh2 Qd2-+) 24.Qb2?? (better 24.Rd3 Qc1 25.Re3-/+) 24...Nb2-+ 25.Bb3 Re8 (25...Rd8!? 26.g4 Be6 27.Be6 fe6 28.Rb3 Rd2 29.Rb7-+) 26.h3 Re1 27.Kh2 Re2 28.d4 Be4 (28...Rd2 29.Re3 Kf8 30.Rf3-+) 29.Rf4?? (29.Rf7 b5-+) 29...g5 (better 29...Bd5-+) 30.Rf7 White fights for the Initiative 30...Nc4?? (better 30...Nd3-+) 31.Bc4+- (31.Rb7 Bd5 32.Rb8 Kf7 33.Rb7 Ke6 34.Bc4 Bc4-+) 31...Bd5 (31...b5 32.Bb3+-) 32.Bd5+- (32.Be2?! Kf7 33.a3 Ke6+-) 32...cd5 33.Rb7 Rf2 34.Rb5 Ra2 35.Rd5 Ra4? (better 35...h6!?+-) 36.Rg5+- Kf7 37.d5 Ra5 38.Rh5 h6 39.Rh6 Rd5 40.Rh7 (40.g4 Ra5+-) 40...Kg6 41.Rh4 Rd2 42.Kg3 Rd5 43.Kf2 Ra5 44.Rg4 Kf6 45.Kg1 Ra2 46.Kh2 Ra1 (46...Ra1 47.h4 Ra5+-). RichardSommer (1970) – CuddlyBear (1960), lichess.org, 2020.

4.Nf3 Qa5 (--> 3.ba5 Qa5 4.Nf3 Nf6).

4.Bf6 ef6 5.Nf3 Qa5 6.e3 Na6 7.Ba6 Qa6 8.Qe2 d5 9.Qa6 Ra6 10.0-0 Bb4 11.c3 Bd6 12.d4 Bf5 13.Nbd2 Kd7 14.c4 Rha8 15.cd5 cd5 (15...Ra2?! 16.Ra2 Ra2 17.e4+=) 16.Nb3 b6 17.h3 Ra2 18.Ra2 Ra2 19.g4 Bc2 20.Na1 Bd3 21.Rc1 Rb2 22.Ne1 Bc4 23.Nac2 b5 24.Ra1 b4 25.Ra7 Kc6 26.Rf7 (26.e4 de4 27.Ne3-+) 26...Rc2! 27.Nc2 b3 (27...b3 28.Ra7 bc2-+) 0–1. kaasparov – geodorna (1875), kurnik, 2012.

4.h3 Qa5 5.Nc3 (5.Nf3 d5=) 5...d5=+ 6.e3 e5 7.Nf3 Bd6 8.Be2 Be6 9.0-0 Nbd7 10.Re1 0-0 11.d3 (11.Ng5 Bf5-/+) 11...Qc7 (better 11...Bb4!? 12.Qd2 d4 13.ed4 Nd5-+) 12.a4 e4 (12...Bb4 13.Rf1-/+) 13.de4 Ne4 14.Ne4 de4 15.Nd4 Bd5 (15...Rfe8 16.Qd2=+) 16.c4= Be6 17.Ne6 fe6 18.Qc2 (18.Rf1 Nc5=) 18...Be5 (18...Bh2 19.Kh1 Rf2 20.Qe4=+) 19.Be5= Qe5 20.Red1 Qf6 21.Rd7? (better 21.Rf1!?=) 21...Qa1-/+ 22.Bf1 Ra4 23.Qe4 Qf6 24.f4 Rb4 25.Bd3 g6 26.Rd6 Re8 27.Kh2 Kf7 28.g4 (28.Be2!?-/+) 28...Rd8 29.g5?? (29.Rd4 b5 30.g5 Rd4 31.ed4 Qf5 32.cb5 Rb2 33.Kg1 Qe4 34.Be4 cb5-+) 29...Qe7 (better 29...Qb2 30.Kg3 Rd6-+) 30.Rd8 Qd8 31.Kg3 Rb3 32.Bc2 (32.Be2 Qd2 33.Kf3 Qc3-+) 32...Rb2 (better 32...Rc3 33.Kf3 Qd2-+) 33.Bd1?? (better 33.Bd3-+) 33...Qd1 34.Qe5 (34.Qd4 Qd4 35.ed4-+) 34...Qe1 (34...Qg1 35.Kh4 Qe1 36.Kg4 Rg2 37.Kf3 Rg3 38.Ke4 Qe3) 35.Kf3 Qh1 36.Kg4 (36.Kg3 Rg2 37.Kf3 Rh2 38.Kg3 Qg2 39.Kh4 Qh3) 36...Rg2 37.Kh4 (37.Kf3 Rh2 38.Kg3 Qg2 39.Kh4 Qh3) 37…Qe1 0–1. tetis – pions (1695), gameknot.com, 2018.

5.Qc2 d6 6.Nc3 Na6 7.a3 g6 (7...e5 8.Nf3+=) 8.Nf3 Bg7 9.e3 Nc5 10.Be2 0-0 11.0-0 e5 12.e4 Ne6 13.Rfd1 Qa7 14.h3 Nh5 15.d3 Nef4 16.Bf1 Ng3 17.Kh2 (17.Bc1!? Nf1 18.Rf1=) 17...Nf1+= 18.Rf1 f5 19.g3? (better is 19.Rab1+=) 19...Nh3!-+ 20.Kg2 (20.Kh3 fe4 Double attack) 20...f4 21.Rh1 (21.Qb3 Rf6 22.Ne2 Be6-+) 21...fg3 22.fg3 Bg4 23.Raf1?? (23.Rhf1-+) 23...Bf3 (better is 23...Rf3 24.c5 Raf8 25.Rf3 Bf3 26.Kh3 Bh1 27.Qd1-+) 24.Rf3 Rf3 25.Rh3 Raf8 26.Nd1 Rf1 27.Rh1 (27.d4 ed4 28.Qe2-+) 27...Rh1 28.Kh1 Rf1 (28...Rf1 29.Kg2 Qg1 30.Kh3 Qh1 31.Qh2 Qf3-+) 0–1. Holz auf der Heide,Gerhard (1965) – Just,Joachim (2115), Leipzig VfB op, 2007.

5.e3 d6 6.Nf3 Nbd7 7.Be2 g6 (7...e5 8.0-0=) 8.0-0 Bg7 9.d4 0-0 10.Nbd2 Nb6 11.Qb3 Na4 12.Rfb1 Ra6 (better is 12...c5=) 13.Ba3?? (better is 13.c5 b5 14.cb6 Rb6 15.Qa3=) 13...Nc3-/+ 14.Bb4 Ne2 15.Kf1 Nd4! 16.Ba5 Nb3-+ 17.ab3 Bf5 18.Rc1 Ne4 19.Ne4 Ba1 20.Ra1 Be4 21.Bc3 Ra1 22.Ba1 Ra8 23.Bc3 Bf3 24.gf3 Ra3 0–1. carocan (1720) – aaddyyss, kurnik, 2012.

5.e3 Ra5 6.Bc3 Ra7 7.Bd4 b6 8.Nf3 e6 9.Be2 Bd6 10.0-0 Nbd7 11.cd5 ed5 12.Bb2 0-0 13.Nd4 Qc7 14.f4 Nc5 15.Nc3 Ra5 16.Qc2 b5 17.Nb3= Nb3 18.ab3 Ra1 19.Ra1 Re8 20.Bd3 Qb6 21.Ne2 Ne4 22.Ng3 Bf4 23.Be4 de4=+ 24.Ne4 Be3-/+ (25.Kh1 Bf4-/+) 0–1. Roggensack Hanspach – Pommerel,Wim, corr SOK–91–73, 1991.

5.e3 Ra5 6.Be2 dc4 7.Bc4 Nbd7 8.Nf3 Nb6 9.Bb3 Bg4 10.d4 e6 11.0-0 Ne4 12.h3 Bh5 13.Qe1 Na4 14.Nfd2 Nb2 15.Ne4 Nd3 16.Qd2 Nb4 17.Nbc3 Be7 18.a3 Nd5 19.Na4 Qc7 20.Qb2 0-0 21.Nac3 Rfa8 22.a4 Bg6 23.Nd2 Nc3 24.Qc3 b5 25.Ra2 ba4 26.Rfa1 a3 27.Bd1 Rb5 28.Nc4 Rb1 29.Na3 Ra1 30.Ra1 Qa5 31.Qa5 Ra5 32.Nc2 Bc2 33.Ra5 Bd1 34.Ra6 f5 35.Rc6 Kf7 36.f3 Bb3 37.Kf2 Bd5 38.Rc7 Kf6 39.Ra7 h6 ½–½. Fritz,Harry – Pommerel,Wim, corr 3GMM–F 2000-01.

5.c4 Ra5 6.cd5 cd5 7.Nc3 Nc6 8.a4 Bf5 9.Nf3 e6 10.Nb5 Be7 11.Nfd4 Bg6 12.Bc3 Ra8 13.Nc6 bc6 14.Nd4 Qc8 15.Nc6 Bd6 16.Ne5 0-0 17.Bb5 Qc7 18.Nf3 Ne4 19.Bb2 Nc5 20.0-0 Nd3 21.Bc3 Qa7 22.Ne1 Ne5 23.d3 Rfc8 24.Qd2 Ng4 25.h3 Nh6 26.Nf3 Bh5 27.Ne5 Qc7 28.d4 Qc3 29.Qc3 Rc3 30.Rfd1 Be5 31.Rdc1 Rc1 32.Rc1 Bf6 33.Bc6 Rf8 34.a5 Bd8 35.a6 Bb6 36.Rb1 Rb8 37.Rb6 Rb6 38.a7 Rb1 39.Kh2 Ra1 40.a8Q Ra8 41.Ba8 Bg6 42.g4 Bd3 43.Bd5 1–0. typ48 – tellmesomethi, playok.com, 2012.

5.Nf3 Nbd7 6.a6 ba6 7.c4 e6 8.Nc3 Rb8 9.Rb1 Bd6 10.Be2 0-0 11.0-0 e5 12.d4 e4 13.c5?? (Better is 13.Nd2=) 13...ef3-+ (14.Bf3 Bc7-+) 0–1. tycho – Goofy, playchess.de, 2004.

5.c4 Qa5 6.cd5 cd5 7.e3 Nc6 8.Be2 e6 9.Bf6 gf6 10.0-0 Bb4 11.Ne1 f5 12.a3 Rg8 13.d3 Bd7 14.Nc2 Bd6 15.Ne1 d4 16.Nf3 Qa7 17.Qc1 Bc5 18.ed4 Nd4 19.Bd1 Bc6 20.Ne1 Rg6 21.Qf4 Qb6 22.Qd2 Bg2 23.Ng2 Qc6 24.Bg4 Rg4 25.f3 Nf3 26.Kh1 Nd2 27.Rf3 Qf3 28.Nd2 Qg2# 0–1. EnginMax20 – Gromit300, 2001.

5.e3 Qa5 6.Bc3 Qb6 7.Be2 Bf5 (7...Bg4 8.0-0=) 8.0-0 (8.d3 e6=) 8...Nbd7 9.Nd4 Bg6 10.f4 (10.Nf3 e6=) 10...e5 (10...e6 11.a4=) 11.fe5 Ne5 12.Nf5 Bf5 (12...Qc7 13.Bd4=) 13.Be5 Be6 14.Bf6 gf6 15.Kh1 (15.Rf6? Bg7 16.Re6 fe6-+) 15...Bd6 16.d4 (16.Rf6 d4 17.Bh5 0-0 18.Bf7 Bf7 19.Rd6 Ra2 20.Qg4 Kh8=) 16...Ke7 (16...Qc7 17.h3=) 17.Bd3+= Qb2 (17...Ra7 18.Qf3 Kd7 19.Qf6+=) 18.Nd2 Ra2 (18...Qc3!?+=) 19.Rb1+/– Qa3 20.Rb7 Bd7?? (better is 20...Kd8+/–) 21.Qf3+- f5 (21...Bf4 22.Qf4 Qd6+-) 22.Qf5 (22…Bc7 23.Rc7+-) 1–0. kamret (2120) – CapitanPiluso (1725), GameColony.com, 2002.

5.e3 Ra5 6.Be2 =.

5.e3 e6 6.Be2 Nbd7 7.0-0 Qa5 8.d4 Bd6 9.c4 0-0 10.c5 Bc7 11.Nbd2 (11.Bd3 b5=) 11...e5 (11...b5 12.cb6 Qb6 13.Qb3=) 12.Ne5+= Ne5 13.de5 Nd7 14.Nb3 Qa7 15.f4 (15.Bd4 Ne5 16.f4 Ng6=) 15...Nc5= 16.Bd4 (16.Nc5 Qc5 17.Bd4 Qa5=) 16...Bb6 17.Nc5 Bc5 18.f5 Re8 19.Bh5 Bd4 20.Qd4 g6 21.Bg4 Qd4 22.ed4 Ra4 (22...gf5 23.Bf5 Bf5 24.Rf5=+) 23.fg6 hg6 24.Bc8 Rc8 25.Rfd1 c5 26.dc5 Rc5 27.Rd2 Kf8 28.Rb1 b5 29.Rdb2 Ra5 30.Rf1 d4 (30...Ke7 31.Rf6=+) 31.e6-/+ f5 32.Re1 Ke7 33.Rd2 Rc4 34.Re5 d3 35.Rd3 (35.h3 Ra3 36.Rb5 Rc2-+) 35...Rc1 36.Kf2 Ra2 37.Kg3 Rcc2 (37...Rcc2 38.Kf4 Kf6 39.Rb5 Rg2-+) 0–1. Woschkat,Karl_Heinz (1835) – Mohr,Daniel, DESC, 2001.

5.e3 Bg4 6.Be2 Qa5 7.0-0 Nbd7 8.Bc3 (8.Ne5 Be2 9.Qe2 Ne5 10.Be5 Nd7=) 8...Qb6 (8...Qc7 9.h3 Bf3 10.Bf3=+) 9.d3 (9.Ne5 Be2 10.Qe2 Ne5 11.Be5 Nd7=) 9...e6 (9...Qc7 10.h3 Bf3 11.Bf3=+) 10.Nbd2 c5 (10...Bd6 11.h3 Bf3 12.Nf3=+) 11.Nb3 (11.a4 Bd6=) 11...Be7 (11...Bd6 12.h3 Bf3 13.Bf3=) 12.Qd2 (12.a4 0-0=) 12...0-0 13.h3 (13.a4 Qd6=+) 13...Bh5 (13...Bf3 14.Bf3 Ra4 15.Rfb1=+) 14.Rfb1 Qc7 15.Nc1 (15.a4 e5=+) 15...b6 (15...Bf3 16.Bf3 Ne5 17.Be5 Qe5 18.d4 cd4 19.ed4=+) 16.Ne1 (16.a4 e5=+) 16...Bg6 (16...Be2 17.Ne2 Ra6 18.Bf6 Bf6 19.c3-/+) 17.Nf3 (17.a4=+) 17...Bh5 (17...Ra4 18.Rb5=+) 18.Qe1 (18.Ne1 Be2 19.Ne2 Ra6=+) 18...Rab8 (18...e5 19.a4=+) 19.Nh4 (19.a4 e5=+) 19...h6 (19...Be2 20.Ne2 b5 21.Nf3=+) 20.Bh5 (20.g4 Bg6 21.Ng6 fg6=+) 20...Nh5 21.Nf3 Bf6 (21...Nhf6 22.a4=) 22.Bf6 (22.Rb5 Ra8=) 22...Nhf6=+ (worse 22...Ndf6 23.g4+-) 23.Ne2 (23.a4 Ra8=+) 23...Rfe8 (23...e5 24.Nc3=+) 24.Nc3= b5 (24...Ra8 25.e4=) 25.a3 (better 25.Nb5!? Qc6 26.a4+-) 25...Qc6= 26.Qd2 (26.Rb2 Rb7=) 26...e5=+ 27.a4 (27.e4 de4 28.de4 b4 29.ab4 cb4-/+) 27...b4 (27...ba4 28.Rb8 Rb8 29.d4 cd4 30.ed4-/+) 28.Nb5 (28.Ne2 e4 29.Ne1 Ne5=+) 28...Ra8 (28...Nb6!?-/+) 29.c4 (29.c3 e4 30.de4 Ne4=+) 29...e4 (29...dc4 30.dc4 Ra5 31.Qc2-/+) 30.de4 (30.cd5!? Nd5 31.de4 Re4 32.Rd1=) 30...de4 31.Qd6 (better 31.Nh4!?-/+) 31...Qd6-+ 32.Nd6 Re6 33.Ne4 (33.Nb5 ef3 34.Nc7-+) 33...Ne4 (33...Re4?! 34.Nd2-+) 34.Rd1 (34.a5 Rea6-+) 34...Nb6 35.Nd2 Nc3 36.Re1 Nba4 37.Nb3 Rc8 38.f3 (38.Kf1 Nb2-+) 38...Rd8 (better 38...Nb2!? 39.e4-+) 39.e4 Rd3 (39...Kh7 40.Kf1-+) 40.Na5 (40.e5 Rc6-+) 40...Rd4 41.Kh2 (41.Nb3 Rc4 42.Kf1 Rf6-+) 41...f6 (41...Kh7 42.Kg1-+) 42.Kg3 Ra6 43.Re3 (43.Nb3 Rc4 44.h4-+) 43...Ra5 44.Rc3 (44.e5 fe5 45.Re5 Kh7-+) 44…bc3 (44...bc3 45.Rc1 Rd2-+) 0–1. brkst – janarie, gameknot.com, 2017.

5.e3 Bg4 6.Be2 e6 7.0-0 Bd6=.

5.e3 Bg4 6.Be2 e6 7.0-0 Be7 8.Bc3 0-0 9.h3 Bf3 10.Bf3 (worse 10.gf3 c5=+ (10...Ra5?! 11.Ba5 Qa5 12.d4+=)) 10...Qd6 11.a4 (11.d4 c5=) 11...Nbd7 (11...Bd8 12.d4=) 12.d4 Bd8 13.Qd2 Bc7 14.g3 Qe7 15.Bb4 c5 16.dc5 (16.Ba3 Ba5 17.c3 Rfc8=+) 16...Ne5 17.Bg2 Nc6 The pressure on the isolated pawn grows (17...Ba5 18.Ba5 Nc4 19.Qb4 Na5 20.Nd2=) 18.c3= Ba5 19.Qb2 Nd7 The isolani on c5 becomes a target 20.Qa3 Nde5 21.Nd2 Rfd8 22.Nf3 Nf3 23.Bf3 Bc7 24.Bg2 h5 25.h4 g5 26.hg5 Qg5 27.Qb2 Ra7 (worse 27...Nb4 28.Qb4 (worse 28.cb4 Be5 29.Qd2 Ba1 30.Ra1 h4=+) 28...Ra5 A) worse 29.Qb7 Rc5 30.a5 Rc3= (30...Ba5? 31.Qa7 Rc3 32.Ra5+-); B) 29.Rfc1+-) 28.Qc2 f5 29.Rfd1 Qg4 30.Ra2 Kf7 31.a5 (31.Ba3 Be5= (31...Ra4? 32.f3 Qc4 33.Bf1+-)) 31...h4=+ (worse 31...Na5 32.Rd4 Qg5 33.c4 dc4 34.Rc4+-; worse 31...Ba5 32.Rda1 Rda8 33.Qb3 Bb4 34.Ra7 Ra7 35.Ra7 Na7 36.cb4+=) 32.gh4 1–0. rona81 (1985) – vuel (2025), gameknot.com, 2015.

5.e3 Bg4 6.Be2 e6 7.a3 Qa5 8.0-0 Bd6 9.h3 (9.Bf6 gf6 10.Nd4 Be2 11.Qe2 Be5=) 9...Bf3=+ 10.Bf3 Nbd7 11.d3 Qb6 12.Qc1 (12.Ra2 Ne5=+) 12...0-0 13.Nd2 Ne5 (13...e5 14.c4=+) 14.Be2 Qc7 (14...Qa5 15.f4 Ned7 16.a4=) 15.f4 Ned7 16.c4 Rfe8 (16...Rfd8 17.Qc2=) 17.d4 (17.Nf3 Ra4=) 17...c5=+ 18.Rd1 Nb6 (18...Qc6 19.Qc3=+) 19.cd5= Nbd5 (19...Nfd5 20.Ne4 c4 21.Nd6 Qd6 22.e4 Nf4 23.Bf1-/+ (23.Bc4? Nh3 24.gh3 Qg3 25.Kf1 Qh3 26.Kf2 Qh4 27.Kf3 Rec8-+)) 20.Nc4 Be7 21.a4 cd4 22.Bd4 (< 22.Rd4 Bc5-/+) 22...Bc5 23.a5 Red8 (23...Bd4 24.Rd4 b5 25.ab6 Nb6 26.Nb6 Ra1 27.Qa1 Qb6 28.Rd3=) 24.Bf3 Bd4 25.Rd4 Rdc8 26.Qb2 b5 27.Qb5 The passed pawn on a5 quickly leads to threats 27...Rab8 28.Nb6 Qc3 (28...Ne3? 29.Qe5 Qe5 30.fe5+-) 29.Rad1 Qe3 30.Kh2 Qa3 (30...Nb6 31.ab6 Re8 32.Rb4+/–) 31.Qd3 (31.Qa4 Qa4 32.Na4 Kf8+=) 31...Rc3 32.Qd2 Rf3 33.gf3 (33.Nc4 Qc3 34.gf3 Qf3+/–) 33...Qf3 34.Rd3 Qe4 (34...Qf4?? 35.Qf4 Nf4 36.Rd8 Ne8 37.Rb8+-) 35.Ra1 Rf8 (35...Qf4 36.Qf4 Nf4 37.a6 Nd3 38.a7+-) 36.Nd5 Nd5 37.a6 Qc4 38.a7 Ra8 (better is 38...Qc6+/–) 39.Rb1+- Rd8 (39...Qc7 40.Rdb3 Qa7+-) 40.Rb8 Qc7 41.Rdb3 g6 42.Rd8 Qd8 43.Rb8 Kg7 44.Rd8 Kh6 45.a8Q (45...Ne3 46.Rh8 Nf1 47.Kg1 Kg7 48.Qc3 e5 49.Qe5 f6 50.Qf8) 1–0. Haertig,Manfred – Heiduk,Michael, ESC, 2001.

5.e3 Bg4 6.h3 Bf3 7.Qf3 Qa5=.

4.Nc3 Nf6 5.e4 e5 6.Nf3 (6.Na4 Qd8=) 6...d5 (6...Bc5 7.Qe2 Ng4 8.h3 Bf2 9.Kd1+=) 7.ed5 (7.Ne5 Qc7 8.f4 Nbd7 9.ed5 cd5+-) 7...e4= 8.Ne5 (8.Na4 Qc7 9.Bf6 gf6+=) 8...cd5 9.d4 (9.Na4 Qd8=) 9...Bb4 (9...Qc7 10.Na4=+) 10.a4 (10.a3!? Be7 11.Na4=) 10...0-0 (10...Qc7 11.Qd2-/+) 11.Be2 Nbd7 12.0-0 Qc7 13.Na2 Bd6 14.Rc1 1–0. tsodikovich (1815) – bobdestructor (1750), gameknot.com, 2018.

4.c4 cb5 5.cb5 Qb5 6.Bc3 (6.Nc3 Qb6=) 6...d5=+ 7.e4 Qd7 8.ed5 Qd5 9.Nf3 Nc6 10.Be2 Nf6 11.0-0 e6 12.Bf6 gf6 13.Nc3 Qd8 14.d4 Bg7 15.Rc1 Ne7 16.Ne4 (16.Qb3 Rg8=) 16...f5 17.Nc5 (17.Qa4 Kf8 18.Nc3 Rg8=) 17...Nd5 (17...0-0!?=+) 18.Bb5= Ke7 19.Re1 b6 20.Nb3 Bd7 21.Bc4 Bc6 22.Nh4 (22.Ne5 Be5 23.de5= (worse 23.Re5 Rg8 24.f3 a4-/+)) 22...Bb7 (better 22...Kf8 23.Nf3 Rg8-/+) 23.Nf5+= Kf8 24.Ng7 Kg7 25.Qg4 Kf8 26.Qh5 Qf6 27.Bd5 Bd5 28.f3 (28.Nd2 Qd4 29.Nf3 Qg7=+) 28...Qg6 (28...a4!? 29.Na1 Qd4 30.Kh1 Ba2-/+) 29.Qg6 (29.Qe5 Rg8 30.Qd6 Kg7 31.Qe5 Kh6=) 29...hg6=+ (worse 29...fg6 30.Rc7+=) 30.Re3? (30.Rc3 a4 31.Nc1 Rh4=+) 30...Ke7 (30...a4 31.Nd2 Ba2 32.Ra3-+) 31.Rec3 (31.Rc7 Kf6=+) 31...Rad8 (31...a4 32.Rc7 Kf8 33.Nd2 Ba2 34.Ne4-/+) 32.Kf2 (32.a3 Bb3 33.Rb3 Rd4 34.Rb6 Rd3 35.Rb7 Kf6=+) 32...Rd7 (32...Rh2 33.a3-/+) 33.Ke3 (33.Kg3 a4 34.Nd2 b5=+) 33...Rhd8 (33...Rh2!? 34.R3c2 a4-+) 34.Rd1 (34.Rb1 Rd6=+) 34...f5 (34...a4 35.Na1=+) 35.Nc1 g5 36.g3 (36.Nd3 Ke8 37.a3 f4 38.Kd2 b5=+) 36...Kf6 (better 36...Bb7=+) 37.Ne2? (37.Rd2 Rh8=+) 37...b5 (37...Ba2!? 38.Rc6 Rd6 39.Rd6 Rd6-+) 38.f4 b4 39.Rc5 g4 (39...Ba2 40.Ra5 Bc4 41.fg5 Kg5 42.Nf4=+) 40.Ra5= Bf3 (40...Rh8 41.Rb1=+) 41.Rd2 (41.h4!?+=) 41...Be2=+ 42.Ke2 Rd4 43.Rd4 Rd4 44.Rb5 Re4 (44...Ke7 45.Ke3 Rc4 46.Kd3 Rc3 47.Kd4=+) 45.Kf2 (45.Kd3 Kg6=) 45...Rd4 (45...Rc4 46.Re5=+) 46.Ke3 Rc4 47.Kd3 (47.Kd2!?=+) 47...Rc3-/+ 48.Kd2 Ra3 49.Rb4 Ra2 50.Ke3 Rh2 51.Rb8? (51.Rb3 Rg2 52.Kd4 Rd2 53.Kc4 Rd6-/+) 51...Rh3 (better 51...Rg2-+) 52.Kf2-/+ Rh7 53.Kg2 Rf7 54.Rb6 Re7 55.Rb3 Rd7 56.Re3 Rd6 57.Re2 Rd5 58.Kf2 Rd4 59.Re3 Rc4 60.Rd3 Rc5 61.Rd2 Rd5 (61...e5 62.Rd6 Ke7 63.fe5 Re5 64.Rc6-/+) 62.Re2 Rd3 63.Re5 Rd4 (63...Rd2 64.Kf1-/+) 64.Re2 (64.Re3 Rd2 65.Ke1-/+) 64...Rd5 65.Kg2 Rd6 66.Rf2 Rd5 (66...e5 67.fe5 Ke5 68.Re2 Kf6 69.Kf2-/+) 67.Rf1 (better 67.Re2=) 67...e5 68.Rh1?? (better 68.fe5 Ke5 69.Re1 Kf6 70.Re2-/+) 68...ef4 (68...Rd2 69.Kf1 Rd1 70.Kg2 Rh1 71.Kh1 ef4 72.gf4 Ke6-+) 69.Rh6 (69.Rh6 Kg5 70.Rc6 Rd2 71.Kg1 fg3 72.Rc5-+; 69.gf4 Rd2 70.Kg3 Rd3 71.Kg2-+). BeepBeepImAJeep (2610) – TheGreatest2 (2075), lichess.org, 2017.

4.e3 Qc5 5.Bd4+/– Qd6 6.Nf3 Nf6 7.Nc3 g6? (better is 7...Nd5+/– 8.Nd5 Qd5 9.Ne5+/–; 7...c5 8.Be5 Qb6 9.Na4+/–) 8.Na4+- Bh6 (8...c5 9.Bc5 (9.Nc5?! Bg7+-) 9...Qc7 10.Bd4+-) 9.Be5 Qc5 (9...Qa3 10.Nb6 Bg7 11.Na8 d6+-) 10.Nc5 (10.Nc5 0-0 11.bc6 dc6 12.Rb1+-) 1–0. pierre – sr_abhigyan, internet, 2008.

4.e3 Nf6!?= 5.Nf3 (5.Nc3 d5 6.Na4 Qc7 7.Nf3 Nbd7 8.c4 e5 9.cd5=) 5...d5 6.Be2 Nbd7 7.0-0 cb5 8.Bd4 Qc6 9.Bf6 +=.

4.e4 cb5 5.Nc3 b4 6.Nd5 Qd6 7.Nf3 Nc6 8.Bc4 f6 9.0-0 =.

4.e4 d5!? 5.ed5 cd5=.

4.e4 f6 5.Nc3+- a4 6.Ba3 d6 (6...e5!? 7.Bf8 Kf8+-) 7.Bc4 h5 (7...e6 8.Rb1 Qd8 9.Nf3+-) 8.Rb1 Qc7 9.Nge2 (9.Nf3 Nd7+-) 9...e5 10.d4 Nd7 11.bc6 bc6 12.d5 (12.0-0 Nb6 13.Bd3 Nh6+-) 12...Nb6 13.Rb6 (better 13.Bd3!? Bd7 14.dc6 Bc6 15.Nb5 Bb5 16.Bb5 Kf7 17.0-0+-) 13...Qb6+= 14.dc6 Ba6? (better 14...Ra5 15.Qd3 Qc6+=) 15.Bd5?? (better 15.Bg8!? Rg8 16.Qd5+-) 15...Rd8 (better 15...Ne7=) 16.Bg8+- d5 (16...Rg8?? 17.Qd5 Bc8 18.Qg8 Qc6 19.Nd5+-) 17.Bf8 Rg8 (17...de4 18.Bd6 Qc6 19.Qd5 Qd5 20.Bd5 (worse 20.Nd5 Rg8 21.Nc7 Kf7 22.Na6 Rd6=+) 20...Rd6 21.Ng3+-) 18.Nd5 Qc6 (18...Rd5 19.ed5 Rf8 20.0-0+-) 19.Ba3 Qc4 20.Nec3 Kf7 (20...Rh8+-) 21.Qh5 g6 22.Qf3 Qc6 23.h4 Bc4 24.Be7 (24.Be7 Bd5 25.ed5+-) 1–0. Cecchelli – Rossini,Eric, corr ITA, 1980.

4.e4 Nf6 5.e5 Ne4 6.d4 d5 7.a4 (better 7.f3 Ng5 8.Nc3+=) 7...e6?? (better 7...Bf5=+) 8.f3+- Nc5 9.dc5 Bc5 10.Nh3 0-0 11.Bd3 cb5 12.ab5 0–1. staatenlose (1995) – frankvelbrati (1795), gameknot.com, 2014.

5.e3 b4 6.Na4 Qc6 7.c3 b5 8.Nf3 ba4 9.Nd4 Qc5 10.Qa4 Ba6 11.Nb3 Qg5 12.cb4 Bf1 13.Kf1 e6 14.Rc1 Ne7 15.b5 Nd5 16.Rc8 Ke7 17.Na5 Nb6 18.Ba3 d6 19.Rc7 Kd8 0–1. varin123 – slihuatamanio, playok.com, 2012.

5.e3 b4 6.Nb5 d6 7.a4 Nf6 8.Nf3 e6 9.Bd4 Qc6 10.Rc1 Na6 11.c4 Nc5 12.Be2 Bd7 13.0-0 Be7 14.d3 Na4 15.Nd2 Nc5 16.Nb3 a4 17.Bc5 dc5 18.Na1 b3 19.Qd2 Qb6 20.d4 0-0 21.Rc3 cd4 22.ed4 Bb4 23.c5 Qa5 24.Rfc1 Bb5 25.Bb5 Qb5 26.Qb2 Bc3 27.Rc3 Nd5 28.Rg3 g6 29.h4 Qc4 30.h5 Nb4 31.Rc3 Qd4 32.Nb3 ab3 33.Qb3 Nd5 34.Rd3 Ra1 35.Kh2 Qh4 36.Rh3 Qf4 37.Rg3 Qf2 38.h6 Qg1 39.Kh3 Qh1 40.Kg4 f5 41.Kf3 Qf1 0–1. captainevans – oldi62, playok.com, 2012.

5.e4 b4 6.Nd5 Qd6 7.Nf3 Nc6 8.Bc4 f6 9.d4 +=.

5.Bd4 Qg6 6.Na3 b4 7.Nb5 Na6 8.Nf3 (8.Nh3 d5 9.Nf4 Qg5=) 8...d6 9.Bb6 Bf5? (better is 9...a4=) 10.Nh4+- (10.Ba5 Bc2 11.Nbd4 Qh5 12.Qc2 Qa5 13.Bb5 Kd8+-) 10...Qf6 11.Nf5 e5 12.Nbd4 Nc5 (12...Be7 13.Qg4 Qg6 14.Bb5 Kf8 15.Qg6 hg6 16.Ne7 Ne7+-) 13.Bb5 Nd7 14.Qf3 (14.Qg4 g6 15.Nh6 Qe7 16.Bd7 Qd7 17.Qd7 Kd7 18.Nf7 Bg7+-). Schuehler,Ernst – Sterle,Vincent, corr, 1982.

5.Bd4 Qg6 6.Bb5 Qg2 7.Qf3 Qf3 8.Nf3 Nc6 +=.

5.Bd4 Qg6 6.Nc3 Nc6 7.Bc5 b6 8.Ba3 b4 9.Nb5 +=.

5.Bd4 Qg6 6.Nf3 Nc6 7.Bb2 b4 8.a3 e6 9.ab4 Nb4 10.d3 d6 11.g3 Bd7 12.e4 Rc8 13.Na3 Nf6 14.Bg2 h5 (14...Ba4 15.0-0-/+) 15.Nc4 (15.c3!? Nc6 16.Nc4=) 15...b5 16.Ne3 Ng4 17.Rc1 (better is 17.c3!? Nc6 18.Bc1-/+) 17...Ne3-+ 18.fe3 h4! 19.Kf2 (19.Nh4 Rh4; 19.gh4 Qg2 Pinning (19...Qg2 Deflection)) 19...h3 20.Bf1 Rh5 21.Nh4 Qh7 22.Bh3 (22.c3 Na2 23.Rc2 Rh4 24.gh4 Qh4 25.Ke2-+) 22...g5-+ 23.Bg4 Rh6 24.Nf3 (better is 24.Ng2-+) 24...f5 25.ef5 ef5 26.Ng5 (26.h4 fg4 27.Ng5 Qf5 28.Ke2-+) 26...Rh2 27.Rh2 Qh2 (27...Qh2 28.Kf1 fg4-+) 0–1. Van Esbroeck,Dirk – Pietrzak,Wojciech, SF–2009–0-00034, 2009.

6.Na3 b4 7.Nb5 d6 8.c3 e5 9.cb4 Na6 10.Rc1 Qd7 11.Bb6 ab4 12.Nc7 Nc7 13.Rc7 Qc6 14.Rc6 bc6 15.d4 ed4 16.Qc2 Ne7 17.Bd4 c5 18.Bb5 Bd7 19.Bd7 Kd7 20.Ba1 Ra3 21.Qc4 Ke8 22.Qb5 Kd8 23.Qc4 Ke8 24.Qb5 Kd8 25.Qb6 Kd7 26.Qb7 Kd8 27.Nf3 f6 28.0-0 Ra2 29.Rd1 Nc8 30.Qf7 Ra1 31.Ra1 Be7 32.Qg7 Re8 33.Qh7 Nb6 34.Ra7 1–0. Luzuriaga,Norberto Horacio – Herrchen,Ralf, email, 2000.

6.Na3 b4 7.Nc4 a4 +=.

6.Nf3 b4 7.Ne5 Qc7 8.Qh5 g6 9.Qh4 =.

6.Nf3 b4 7.Ne5 Qe6 8.Bc4 (8.a3!? Nc6 9.Nc6 dc6 10.ab4+=) 8...d5= 9.Bb5 Bd7 (9...Nc6 10.c4 bc3 11.Nc3=) 10.Nd7 Nd7 11.a3 (11.c3 Nh6=) 11...ba3 12.Na3 (12.Ra3 Qe4 13.0-0 e5-/+) 12...Ngf6 (12...Nh6 13.0-0=) 13.c4 (13.Qb1 Qg4 14.0-0 Rd8=) 13...Qf5 14.Bb2 (14.cd5 Qd5 15.Qf3 e6+=) 14...e6 (14...e5 15.Bd7 Kd7 16.cd5+=) 15.Qa4 (15.cd5 Qd5 16.Bf6 gf6+=) 15...Kd8-/+ 16.Bd7 (16.Bd7 Nd7 17.cd5 Qd5 18.e4-+). Schuehler,Ernst – Poschmann,Hans, corr, 1981.

6.Nf3 b4 7.Ne5 Qh6 8.a3 Nc6 (8...e6 9.ab4 Bb4 10.Nc3+=) 9.ab4 (9.Nc6 Qc6 10.ab4 b6+=) 9...Ne5 (9...Nd4!? 10.ed4 Qf4=) 10.Be5+/– f6 (10...b6 11.Nc3 Qc6 12.ba5 ba5 13.Be2+/–) 11.Bg3 (11.Bc7 a4+/–) 11...e5 12.Nc3 Bb4 13.Nb5 (13.Nd5 Rb8+/–) 13...Kd8 (13...Kf8 14.c3 Be7 15.Nc7+/–) 14.c3+/– Be7 15.Qb3 Bc5 (better is 15...Qg6!?+/–) 16.Qc4 d6?! (16...b6 17.d4 Be7+-) 17.d4 ed4 (17...Ne7 18.dc5 d5 19.Qb3+-) 18.Bd6 (18.Nd4?! Ne7+/–) 18...Bd6 19.Nd6 Qg6 (19...Qh5 20.Nf7 Ke7 21.Nh8+-) 20.Rd1 (20.Nf7 Ke7 21.Nh8 Qc2 22.Qc5 Ke8 23.Bb5 Bd7 24.Bd7 Kd7 25.Qb5 Kc7+-) 20...Bd7 21.Qd4 Rb8 22.Bc4 Nh6 23.Nf7!! Qf7 24.Bf7 (24.Bf7 Ke7 25.Qe4 Kf8 26.Rd7 g6 27.Bg6 Nf7 28.Rf7 Kg8 29.Qe7 hg6 30.Rg7#) 1–0. Woelfelschneider,Peter – Tschoepe,Frank, 2008.

4.a4 g6 5.e3 Bg7 6.Nf3 0-0 7.Be2 Qc7 8.c4 d6 9.0-0 Nbd7 10.Nc3 Ne4 11.d4 Nc3 12.Bc3 c5 13.Qb3 cd4 14.Bd4 e5 15.Bb2 Nc5 16.Qc2 Bf5 17.Qc1 Nb3 18.Qd1 Na1 19.Ba1 Rac8 20.Nh4 Be6 21.Bf3 g5 22.Bb7 Qb7 23.Nf3 Bc4 24.Re1 g4 25.Nd2 Be6 26.e4 Rfd8 27.Qe2 Rc2 28.Qd3 Ra2 29.f4 Qa7 30.Kh1 Qf2 31.Rd1 ef4 32.Bg7 Kg7 33.Qc3 Kg8 34.h3 f3 35.gf3 g3 0–1. popovicigelu – expatrie (1820), kurnik, 2012.

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

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

4.e3 d6 5.a4 (5.Nf3 e5=) 5...e5 6.c4 Bf5 7.Nf3 Be7 8.Be2 0-0 9.d3 (9.0-0 cb5 10.ab5 Nbd7=) 9...h6 (9...cb5 10.ab5 Nbd7 11.0-0=) 10.e4 Be6 11.Nbd2 Nbd7 12.d4 Nb6 13.bc6 bc6 14.de5 de5 15.Qc2 Bb4 16.Be5 Bg4 17.0-0+/– c5 18.Rfd1 Qe7 19.Bb2 Rad8 20.e5+/– Nh5 21.Qe4 Bf3 22.Nf3 (22…f5 23.Qe3+/–; 22.Qf3 Bd2 23.Qh5 Qe6+=) 1–0. Erlandsson,Harry – Bivens, corr 3GMM–14, 1995.

4.e3 e6 5.Nf3 d5 6.c4 (6.Be2 cb5 7.Bb5 Bd7=) 6...Bd6 (6...cb5 7.cd5 Nd5 8.Bb5 Bd7 9.Be2=) 7.d4 0-0 (7...dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Bd3=) 8.c5 Be7 9.b6 Nbd7 10.Bd3 e5 11.Nfd2 (worse is 11.de5 Ne4+=) 11...e4 12.Bc2 (12.Be2 Qe8=) 12...Nc5 (12...Qe8 13.0-0 Nb8 14.f3+=) 13.dc5 Bc5 14.Nc3 Bb6 (worse is 14...Qb6 15.Na4 Qa7 16.Nc5 Qc5 17.Bf6 gf6 18.0-0+/–) 15.Rb1 Ng4 16.h3 (16.Na4 Bc7=) 16...Qh4+= 17.0-0 (17.g3 Qh6 18.Qe2 Bc7=) 17...Nf2 18.Rf2 Be3 19.Qe2 Ba7 (19...Qf2 20.Qf2 Bf2 21.Kf2-/+) 20.Nd1+= f5 21.Nb3 Bf2 22.Qf2 Qg5 23.h4 Qh6+= 24.Be5 f4 25.g3 fg3-/+ 26.Qg3 Rf3 27.Qg5 Qg5-+ 28.hg5 Rf5 29.Bd4 Rg5 30.Kh2 a4 31.Nc5 b5 32.Ne3 Rh5 33.Kg2 Rg5?? 34.Kh2 Rh5?? 35.Kg2 Rh6 36.Bd1 Bh3 37.Kg3 Re8 38.Ng4 Bg4 39.Bg4 Rg6 40.Kh4 Re7 (40...Rd6 41.Bd7 Re7 42.Bg4-+) ½–½. Felkel,Siegfried – Woelfelschneider,Peter, TT–18 ETC, 2005.

4.cb4 b5 5.e3 Bb7 6.Nf3 d6 (6...Nf6 7.a4=) 7.Be2 e5 8.d4 (8.Nc3 Nf6=) 8...e4 9.Nfd2 d5 10.a3 Nf6 11.0-0 Nbd7 12.f3 Qe7 (12...ef3 13.Bf3 Bd6 14.Nc3=) 13.fe4 (13.Nc3 ef3 14.Rf3 g6=) 13...Ne4= 14.Ne4 Qe4 (worse 14...de4 15.Rf4+-) 15.Qd2 Nf6 16.Rf4 (16.Nc3 Qg6=) 16...Qe6=+ 17.Nc3 Bd6 18.Rh4 0-0 (18...Be7 19.Rf4=) 19.Bd3= g6 (19...Rfd8 20.e4 Ne4 21.Ne4 de4 22.Re4=) 20.e4+= de4 21.Ne4 Ne4 22.Re4 Qd7 23.Rf1 c5? (better 23...f5 24.Ree1 Bc7+=) 24.dc5+- (24.bc5?! Be4 25.Be4 Bc5 26.Ba8 Ra8=) 24...Be4 25.Be4?? (better 25.Qc3 f6 26.Be4+- (26.cd6?! Bd3 27.Qd3 Rad8=)) 25...Qe6 (better 25...Bc5 26.Bd4 Qd4 27.Qd4 Bd4 28.Kh1 Ra3-+) 26.Ba8 (better 26.Bd5 Rfe8 27.cd6+-) 26...Bh2 (26...Ra8 27.cd6 Re8+-) 27.Kh2 Ra8 28.Qd4 f6 29.Rf6 (29.Rf6 Ra5 30.Qd8 Qe8 31.Qe8 Kg7 32.Rg6) 1–0. Abdullaevich (1870) – mahendran_dhoni (1950), lichess.org, 2020.

4.cb4 d6 5.Nf3 Qb6 6.a3 c5 7.Bc3 cb4 8.Bb4 Nc6 9.Bc3 Bg4 10.e3 Ne5 (10...e5 11.h3 Bh5 12.Be2=) 11.Be2 Nf3 12.Bf3 Bf5 13.0-0 e5 14.d4 f6 (14...e4 15.Be2=) 15.de5 (15.e4 Bg6+-) 15...fe5 (15...de5 16.Ra2 e4 17.Bh5 g6 18.Be2+=) 16.Nd2 Bd3 17.Be2 Be2 18.Qe2 Nf6 19.Bb4 Nd5 (19...d5!?=) 20.Nc4 Qb5?? (better 20...Qa6 21.Qh5 g6+-) 21.Nd6+- Bd6 22.Qb5 Ke7 23.Bd6 Kd6 24.Rfd1 (24.Rfd1 Rhd8 25.Rd5 Ke7 26.Re5 Kf8 27.Qb7+-) 1–0. alessandrocarvalhaes (1850) – GALA47 (1815), lichess.org, 2020.

4.cb4 e5 5.a3 d6 6.d4 ed4 7.Bd4 Be6 8.e3 Nf6 9.Nf3 Be7 10.Nbd2 Nbd7 11.a4 (11.Bd3!?=) 11...0-0=+ 12.Rb1 (12.Bd3 Ne5 13.Bc2 Nf3 14.Nf3 c5-/+) 12...Nb6 (12...Bf5!? 13.Rc1 h6-/+) 13.a5=+ Nbd5 14.e4 Nc7 (14...Nf4!?-/+) 15.Bd3= Nb5 16.Bb5 cb5 17.0-0 Nd7 (better 17...Qd7!?=) 18.Qe2+- White plans e5 18...b6 19.ab6 (19.Qb5?! ba5 20.ba5 Qa5 21.Qa5 Ra5=) 19...Nb6 20.Qb5 Rb8 21.e5?? (better 21.Qe2!?+-) 21...Nd7 (21...Nc4! 22.Qc6 Nd2 23.Nd2 de5-/+) 22.Qa5 de5 23.Be5 (worse 23.Ne5 Ne5 24.Be5 Qd2 25.Bb8 Rb8-/+) 23...Ne5 24.Qe5 Rb4 25.Rb4 Bb4 26.Ne4 h6 0–1. AsceticKingK9 (1740) – stubbsyswade (1990), ChessWorld.net, 2021.

4.cb4 e6 5.e3 Nf6 6.Qb3 d5 7.Nf3 Na6 8.b5 Nc5 9.Qc2 Bd6 10.bc6 bc6 11.Ne5 Bd7 12.Nd7 Qd7 (12...Nfd7? 13.Bg7 Rg8 14.Qh7+-; 12...Ncd7?! 13.Qc6 Be7 14.a4=) 13.Bf6 gf6 14.Nc3 Ke7 (14...e5!?=+) 15.a4 Ra5 (15...Kf8 16.a5+=) 16.Be2 Qa7 17.0-0 Na4?? (better is 17...Kf8+=) 18.Na4 Ra8 19.Qc6?? (better is 19.Bd1+-) 19...Ra4= 20.Ra4 Qa4 21.Qb7 (21.Bb5!? Qa3 22.e4 de4 23.Qe4+=) 21...Kf8= 22.Bh5 Be7 23.g4 Qa7 24.Qb1 Kg7 25.f4 Rb8 26.Qc2 Qc5 27.Qd3 (27.Qc5 Bc5 28.Rc1 Bb4=) 27...Rc8 28.f5 e5 29.Qe2 Qc4 30.Qg2 (30.Qc4 dc4 31.Rb1 Rc7=+) 30...h6 31.h4 d4 (31...Qd3 32.Rd1-/+) 32.g5 hg5 33.hg5 Kh8?? (better is 33...fg5 34.Bf3 de3 35.de3 Qb3-+) 34.g6 fg6 35.Bg6 (35.Qg6?? Rg8-+) 35...Qg8?? (better is 35...de3 36.Qh3 Kg7 37.de3 Rh8=) 36.Rf3+- de3 37.Qh3 (better is 37.de3 e4 38.Rh3 Kg7 39.Bh7 Kf7 40.Bg8 Rg8 41.Rg3 Rg3 42.Qg3+-) 37...Kg7+/– 38.Rg3 (38.de3?! Rc1 39.Rf1 Rf1 40.Kf1 e4=; 38.Re3? Bc5-+) 38...Kf8 39.Bh7 (better is 39.Bf7! Qg3 40.Qg3 Kf7 41.Qg6 (41.de3?? Rg8 42.Qg8 Kg8-+) 41...Kf8 42.Qh6 Kg8 43.de3+/–) 39...Rc1= 40.Kh2 Qg3?? (better is 40...Qd5 41.Rg8 Qg8 42.Bg8 e2+= (42...ed2?? 43.Qb3 Rh1 44.Kg2 Rg1 45.Kg1 d1Q 46.Qd1 Kg8 47.Qd7+-)) 41.Qg3+- Ke8 42.Qe3 Bd6 43.Kg2 Rc4 (43...Kd7 44.Qa7 Kc8 45.Bg8+-) 44.Qb6 (better is 44.Bg6 Ke7 45.Qa7 Kd8 46.Qb6 Ke7+-) 44...Rg4 45.Kh3 Rg7 (45...Rd4 46.Bg6 Kd7 47.Qb7 Kd8 48.Qf7+-) 46.Qc6 Ke7 (46...Rd7 47.Qc8 Ke7+-) 47.Qb7 Kf8 48.Qc8 (48…Ke7 49.Bg6 Rh7 50.Bh7+-) 1–0. cagey – la8pv, Live Game Caissa's Web, 2004.

4.cb4 Nf6 5.Nf3 e6 6.a3 d5 7.e3 Na6 8.Be2 Nc7 9.d4 Ne4 10.Nbd2 Bd6 11.Qc2 (better 11.Ne4 de4 12.Nd2+=) 11...Qf6 (better 11...Nd2 12.Qd2 0-0=) 12.Ne4+- de4 13.Qe4 0-0 14.0-0 Qh6 15.Bd3 Nd5 16.g3 Qh3 (better 16...Rd8!?+-) 17.Ng5+- f5 18.Qg2 (better 18.Nh3 fe4 19.Be4+-) 18...Qg4 19.Nf3 h5 (19...b6!?+-) 20.h3 Qg6 21.Ne5 Be5 22.de5 Kh7 23.Rfd1 b6 24.Rdc1 (24.e4 Ne7+-) 24...c5 (24...Bb7+-) 25.Bc4 (better 25.bc5 bc5 26.e4+-) 25...Bb7+- 26.Re1?? (26.bc5 bc5 27.Bb5 Rfc8+-) 26...Rab8?? (better 26...Ne3 27.Qb7 Nc4-/+) 27.f3 f4? (better 27...cb4 28.Bd3 Rbd8=) 28.e4?? (better 28.gf4 Rfd8 29.bc5 bc5 30.Qg6 Kg6 31.Re2+-) 28...Ne3=+ 29.Qe2?? (better 29.Re3 fe3 30.Rf1=+) 29...Qg3-+ 30.Kh1 Qh3 31.Qh2 Qf3 32.Kg1 Be4 (better 32...Nc4 33.Ra2 Be4-+) 33.Be6 Ng4 (better 33...Rbe8 34.Bh3 Rd8-+) 34.Bg4?? (better 34.Qh5 Nh6 35.Qf3 Bf3 36.Bc4=+) 34...Qg4 35.Kf2 (35.Kf1 Qf3 36.Kg1 Rf5 37.Re2 Rg5 38.Rg2 Rg2 39.Kh1 Rg3 40.Qg2 Qg2) 35...Qg3! 36.Qg3 fg3 37.Kg3 Rf3 38.Kh4 g6?? (better 38...Rf4 39.Kh3 cb4 40.ab4 Bf5 41.Kg2 Rb4-+) 39.Re4+- Rbf8 (39...Rd8 40.Rh1+-) 40.Rae1 Rf2 41.Bc3?? (better 41.Bc1+-) 41...Kh6?? (better 41...R8f3 42.R1e2 Re2 43.Re2 Rc3-+) 42.bc5?? (better 42.R1e3 Rh2 43.Kg3=) 42...R8f3 (42...g5 43.Kg3 R8f3) 43.Bb4 (43.Bd2 Rd2 44.cb6 g5) 43…Rh2 (43...g5) 0–1. alessandrocarvalhaes (1865) – Lulu1001 (1790), lichess.org, 2020.

5.a3 c5 6.Qb3 cb4 7.ab4 Ra1 8.Ba1 Nc6 9.Bc3 (9.b5 e6=) 9...Nf6 10.e3 d6 11.Nf3 Be6 12.Bc4?? (12.Qa4 Bf5 13.Qa8 Nd8=) 12...Bc4?? (better 12...d5 13.Be2 d4-+) 13.Qc4= e6 14.0-0 d5 The pressure on the isolated pawn grows 15.Qb3 (15.Qa2 Ne4=) 15...Nb4 (15...Bb4 16.Qb2 Ke7=+) 16.Nd4 (better 16.Na3 Qc5 17.Rb1+=) 16...Ne4?? (16...Nd7!?-/+) 17.Qa4?? (better 17.Nc2+-) 17...Kd8=+ 18.Qa8 Kc7 (better 18...Kd7!?=+) 19.Bb4 Qb4 20.Nc3! g6?? (20...Nc3 21.dc3 Combination) 21.Ndb5 Kb6 (21...Kd7 22.Qb7 Ke8+-) 22.Qd8 Ka6 23.Ra1 Qa3 24.Na3 Ba3 (24...Nc3 25.Nc4 Kb5 26.Qa5 Kc4 27.Qc3 Kb5 28.Rb1 Ka4 29.Qd4 Ka5 30.Qa7) 25.Qh8 (25.Ra3) 25...Ka5 26.Ra3 (26.Qd8 b6 27.Qd7 Nc3 28.dc3 d4 29.Ra3) 26...Kb4 27.Ra4 (27.Qf8 Kc4 28.Ne4 de4 29.Rc3 Kb5 30.Qc5 Ka4 31.Ra3) 27...Kb3 (27...Kc5 28.d4 Kc6 29.Qc8 Kb6 30.Rb4 Ka5 31.Rb5 Ka6 32.Qb7) 28.Re4 (28.Qd4 Nc3 29.Rb4 Kc2 30.Qc3 Kd1 31.Kf1 e5 32.Rb1) 28...de4+- 29.Ne4 (29.Qa8 f5 30.Qa4 Kb2 31.Qa2 Kc1 32.Ne2 Kd1 33.Nd4 Ke1 34.Qc2 b5 35.Qc1) 29...Kc2 30.Qc3 Kd1 31.f4 (31.d4 b5 32.Qd2) 31...b5 (31...f5 32.Nf2 Ke2 33.e4 fe4 34.Qe3) 32.Kf1 f5 (32...b4 33.Nf2) 33.Nf2 1–0. Akrapovik – ANDYBAGO, lichess.org, 2019.

5.a3 c5 6.Bc3 Nf6 7.e3 Nc6 8.Qb3 (8.bc5!? Qc5 9.d4=) 8...cb4=+ 9.Bb2 (9.Nf3 d5=+) 9...e6 10.ab4 (10.Nf3 d5=+) 10...Ra1-/+ 11.Ba1 Qb4 12.Qc2 Be7 13.Nf3 0-0 14.Be2 d5 15.0-0 Bd7 16.Bc3 Qd6 17.d4 Ne4 18.Rc1 Ra8 19.Be1 Be8 20.Nc3 Nb4 (20...Nf6 21.Nb5 Qd8 22.Bd3-/+) 21.Qb1 (21.Ne4!? Nc2 22.Nd6 Ne1 23.Nb7 Nf3 24.gf3=) 21...Nc3-/+ 22.Bc3 Nc6 (better 22...f6!? 23.Bd2 Bg6-/+) 23.Qb7= Rb8 24.Qa6 Nb4 25.Bb4 Qa6 26.Be7?? (better 26.Ba6 Bb4 27.Bd3=) 26…Qe2-+ 0-1. dannysmet (2060) - mychessmyworld (2065), Rated Blitz game, lichess.org, 2021.

5.a3 Nf6 =+.

5.d4 e5 6.de5 Bb4 7.Bc3 (7.Nd2 Ne7=+) 7...Bc3-/+ 8.Nc3 Bf5 (8...d4 9.Nb1-/+) 9.e3 Ra3 10.Rc1 Qa5 11.Nge2 Nd7 12.Nd4?? (better is 12.Qd4-/+) 12...Rc3-+ 13.Rc3 Qc3 14.Qd2 Qa1 15.Ke2 (15.Qd1 Qd1 16.Kd1 Be4-+) 15...Bb1 16.f4 Nc5 17.Nc2 (17.Nb3 Bd3 18.Kf3 Nb3 19.Qd3 Qa2-+) 17...Qa2 18.Nd4 Qa3 19.g3 (19.Kf3-+) 19...Ne4 20.Qe1 Qb2 21.Kf3 Nf2! 22.Qf2 Be4 (23.Kg4 Qf2-+) 0–1. pinski – Netsurferdude, ChessWorld.net, 2005.

5.e3 Bf5 6.f4 e6 7.Nf3 Nd7 (7...Bb4?? 8.Bg7 Nf6 9.Bh8+-) 8.a3 Nb6 9.Nc3 Nf6 10.Nd4 Bg4 11.Qb3 e5 12.fe5 Ne4? (better 12...Nfd7 13.Be2 Ne5=) 13.Ne4+- de4 14.g3 Be7 (14...Qc7!?+-) 15.Bg2+- Qd5 16.Qc2 c5 (16...Bf3 17.Bf3 ef3 18.0-0+-) 17.Be4 Qc4 18.bc5 Rc8 (18...Bc5 19.Rc1 Bd4 20.Qc4 Nc4 21.Bd4 Be6 22.Bb7 Ra3 23.Bc6 Kd8+-) 19.cb6 Qc2 20.Nc2 0-0 21.Nb4 Rfd8 22.Bd4 Rd7 23.0-0 Ra8 (23...Rcd8 24.Rfc1 f6 25.Nd3 Rd4 26.ed4 Rd4 27.Nf2 fe5 28.Bb7+-) 24.Nd5 Bd8 25.Rfc1 Bg5 (25...Be6 26.Nc7 Rb8 27.a4+-) 26.Kg2 Rad8 (26...Bd8 27.a4+-) 27.h3 Be2 (27...f5 28.ef6 Be6 29.Nf4 Bf4 30.gf4 gf6 31.Rc7+-) 28.h4 Bh6 29.Rc7 Bg4 30.Rac1 Kf8 31.Rd7 Bd7 32.Bc5 Kg8 33.Ne7 Kh8 34.Bb7 g5 35.Bd5 gh4 36.gh4 Bf8 37.b7 Rb8 38.Bd6 (38.Bd6 Rb7 39.Bb7+-) 1–0. Pierre – Tjelarna, internet, 2019.

5.e3 Nf6 6.Bf6 ef6 7.a3 (7.b5!?-/+) 7...Bb4!-+ 8.Nc3 (8.ab4 Ra1) 8...Ra3 (< 8...Ba3 9.Qb3+/–) 9.Ra3 Ba3 10.Qb3 Qa5 11.Bd3 Na6 12.Na4 (12.Nge2 b5-+) 12...Bb4 13.Nf3 b5 14.Nb2 Nc5 15.Qd1?? (15.Qc2-+) 15...Qa2 16.Qb1 Qb1 (better is 16...Qb2! 17.Ke2 Nd3 18.Qd3 Bd6-+) 17.Bb1 0-0 18.Nd4 Bd7 19.Ke2 Re8 20.Nd3 Nd3 21.Kd3 (21.Bd3 Ba3-+) 21...Bc5 (21...c5 22.Nf3-+) 22.Nf3 (22.Bc2 Bd6 23.Rb1 Rb8-+) 22...Bf5 (22...Bd6!? 23.Ba2-+) 23.Kc3 Bb1 24.Rb1 Rb8 25.Ra1 g6 26.Ra6 Rb6 27.Ra8 Kg7 28.d4 b4 29.Kb3 Bf8 30.h4 h5 31.Ne1 Bd6 32.f4 (32.Nd3!?-/+) 32...f5 33.Nf3 Be7 34.Ne5 c5 35.Nd7?? (better is 35.dc5 Bc5 36.Nd7-/+) 35...c4-+ 36.Kb2 Rb7 (36...Re6 37.Ra5-+) 37.Ne5 (37.Nc5 Rb5-+) 37...Bh4 38.Nc6 b3 39.Na5 (39.Ra1-+) 39...Bf2 (better is 39...c3 40.Kb1 Rb5 41.Nb3 Rb3 42.Kc2 Rb2 43.Kc3 Rg2-+) 40.Nb7= Be3 41.Rd8 Bd4 42.Ka3 b2 (42...Be3 43.Kb2 Bd4 (< 43...Bf4 44.Rd5 Kf6 45.Na5+/–) 44.Ka3 b2+=) 43.Ka2+- c3 44.Kb1 Be3 45.Rd5 Bf4 46.Nc5 Bg5 47.Na4 Bf6 48.Nc5?? (better is 48.Rb5!?+-) 48...f4 (48...Bg5 49.Rd3+-) 49.Nd3 (better is 49.Rd3!?+/–) 49...g5 50.Nf2 g4 (better is 50...h4!?=) 51.Ne4+/– h4 52.Rf5 (52.Nf6? Kf6 53.Rh5 h3 54.gh3 g3-+) 52...f3 53.gf3 g3 54.Rf4 (54.Nf6 Kg6 55.Rf4 Kg5 56.Rg4 Kf6 57.Rh4 Ke5+-) 54...Be5?? (better is 54...Kf8=+) 55.Rh4+- f5 56.Ng5?? (better is 56.Rh5!? g2 57.Rg5 Kh6 58.Rg2 fe4 59.fe4+/–) 56...g2 (56...Bf6!? 57.Rh3 Bg5 58.Rg3 Kf6=+) 57.Nh3= Bh2 58.Rc4 g1Q 59.Ng1 Bg1 60.Rc3 Bd4 61.Rd3 Bc3?? (61...Be5 62.f4 Bf4 63.Rf3+/–) 62.Rd6 (better is 62.Rc3 Kf6 63.f4+-) 62...Bf6 63.Rd5 Kg6 64.Rd3 Kg5 65.Re3 Kf4 66.Rb3 Kg3 67.Rd3 f4 68.Kc2 Kf2 69.Rb3 Ke2 70.Ra3 Bd4 71.Rb3 Bg7 72.Ra3 Be5 73.Rb3 Bg7 ½–½. audrey – binzel, Live Game Caissa's Web, 2004.

5.Nf3 e6 6.Qb3 (better is 6.a3=) 6...Bd6?? (better is 6...Nf6=+) 7.Bg7+- Qe7 (7...e5 8.Bh8 Qe7 9.a3+-) 8.Bh8 Bb4 9.Bc3 (9...Bc3 10.Nc3+-; 9.Nc3 Nd7+-) 1–0. Chelly – Seneca, myChess.de, 2005.

5.Nf3 Nf6 6.a3 Bf5 7.d4 (7.e3 e6=) 7...g6 (7...e6 8.e3+=) 8.e3= Bg7 9.Bd3 (9.Be2 Qd7=) 9...Bd3 10.Qd3 0-0 11.0-0 Ne4 12.Nbd2 Nd2 13.Qd2 Nd7 14.a4 (14.b5 Nb6=) 14...Nb6 15.Qc2 Qd6 16.Bc3 Nc4 17.Rfe1 (17.a5 f5=) 17...f6 (17...Ra6 18.e4=) 18.b5 (18.e4 Rfd8=) 18...e5 (18...Rfc8 19.Nd2=) 19.e4 de4 (19...Rfe8 20.bc6 bc6 21.a5=) 20.de5 (20.Qe4 f5 21.Qe2 cb5 22.ab5 Qd5 23.de5 Ra1 24.Ba1 Qb5+=) 20...fe5 21.Qe4 Rf4 22.Qc2 (22.Qe2 cb5 23.ab5 Ra1 24.Ba1 Qc5=) 22...Rc8 (22...cb5 23.ab5 Ra1 24.Ra1=) 23.Rad1 Qe6 24.Qd3 cb5 25.ab5 Qb6 26.Qd5 Kh8 27.Re2 Rf5 28.Qd7 Rcf8 29.Bb4 Ra8 30.Rc2 Rf4 31.Rdc1 Rd8 32.Qh3 Qb5 33.Ng5 h6 34.Ne6 Qb4 35.Nd8 b5 36.Ne6 Rf5 37.Ra2 Qe7 38.Ra8 Kh7 39.Ng7 Qg7 40.Qd3 Rf7 41.Qd8 b4 42.Rb8 Rd7 43.Qe8 Nb2 44.h3 Re7+= 45.Qb5 e4 46.Rcc8 Nd3 47.Qa6 Rf7? 48.Qa8+- Qd4 49.Rh8 Kg7 50.Rbg8 Kf6 51.Qa6 Ke5 52.Re8 Kf4 53.Qg6 Qf2 54.Kh1 Ke3 55.Re4 Kd2 56.Qh6 Kc3 57.Rc8 Kb2 58.Kh2 Rf6 59.Qh5 Qf1 60.Qd5 Rf2 61.Rd4 Kb1 62.Ra8 (62.Ra8 Rd2 63.Qb3 Rb2 64.Qd3 Qd3 65.Rd3+-) 1–0. Rosner,Dirk – van den Berg,T, corr EU/I/1800 (year?).

5.Nf3 Bg4 6.a4 =+.

4.e3 ab4 5.cb4 Nf6 6.Qf3 =.

4.Nf3 d5 5.g3 f6 6.Bg2 e5 7.a3 a4 (7...Bd6!?=+) 8.0-0 Bd6 9.d3 Ne7 10.e3 Be6 11.Nbd2 0-0 12.Rc1 Qb6 13.c4 dc4 (13...bc4 14.dc4 Nd7 15.Qc2=) 14.dc4+= bc4 (14...Bc7!?+=) 15.Nc4+/– Bc4 16.Rc4 Rd8 17.Qc2 Ra7 18.Rd1 Na6 19.Nh4 Rc7 (19...Qb5 20.Rc3+/–) 20.Qa4 c5 21.b5 Nb8 22.Qb3 Kh8 23.a4 Nbc6 24.Rcc1 Na5 (24...Ra7 25.Qe6 Nb4 26.Rd2+-) 25.Qe6 c4 (25...Rcd7 26.Bc3+-) 26.Ba3! (26...Rcd7 27.Bb4+-) 1–0. Grund,Karl – de Visser,Arno, corr, 1982.

5.a4 ba4 6.Qa4 Qb6 =.

5.Qf3 d5 6.Na3 Qf6 7.Nc2 ab4 8.Qf6 Nf6 9.cb4 Be7 10.d4 0-0 11.Bd3 Nbd7 12.Nf3 Ne4 13.Be4 de4 14.Nd2 f5 15.0-0 Bf6 16.f4 c5? 17.bc5 Nc5 18.Ba3 Nd3 19.Bf8 Kf8 20.Rfb1? (20.a3) 20...Bd7 21.Ne1 (21.g3) 21...Nf4! 22.ef4 Bd4 23.Kf1 b4 24.Nc2 (24.Ke2) 24...Bb5 25.Ke1 Bc3 26.Rb4 Bd3 27.Rb3 Ba1 28.Na1 Ra2 29.Rb8 Ke7 30.Nab3 e3 31.Nf3 Rg2 32.Nbd4 1–0. Diener – A de Visser, corr 1981–83 (Diener).

5.Qf3 Nf6 6.Bb5 ab4 7.cb4 Nd5 8.Bc4 Nb4 9.Qd1 d5 10.a3 dc4 11.ab4 Ra1 12.Ba1 Na6 13.Qa4 Nb4-+ 14.Bc3 Nd3 15.Ke2 Qd5 16.Nf3 Be7 17.Bg7=+ Rg8 18.Nc3 Nc5 19.Nd5= Na4 20.Ne7 Ke7 21.Bd4 c5 22.Be5 f6 23.Ra1 (23…Bd7 24.Bg3=). Diener,Rudolf – Sterle, corr, 1982.

4.a3 a4 5.e4 e5 6.Bc4 Nf6 7.d3 (7.Qe2!?=) 7...d5+= 8.ed5 cd5 9.Ba2 Be6 10.Nf3 Bd6 11.0-0 h6 (11...0-0 12.c4 dc4 13.dc4=) 12.Nbd2 (12.c4 Bg4+=) 12...0-0 13.d4 (13.c4!? Nbd7 14.cd5 Bd5 15.Bd5 Nd5 16.Re1+=) 13...e4+= 14.Ne5 Qc7 15.f4 (15.c4 dc4 16.Bc4 Bc4 17.Ndc4 Rd8=) 15...Bf5 (15...Re8 16.c4=) 16.Rc1 (16.c4!?=) 16...b5+= 17.Qe2 Qb7 18.g4 Be5?? (18...Be6-/+) 19.gf5?? (better is 19.fe5 Bg4 20.Qg2+/–) 19...Bd6-+ 20.Rf2 Nc6 21.Nf1 Ne7 22.Ne3 Kh8 23.Rcf1 Rg8 24.Kh1 Qd7 25.Rg2 Rab8 26.Qf2 Nf5 27.Nd5+= Nd5 28.Bd5 e3 29.Qe2 Rbe8 30.c4+= bc4 31.Qc4 Re7 32.Bc6+= Qc7 33.d5 Bf4?? 34.Rf4?? Nd6?? 35.Qe2 f6 36.Rfg4 Re4 37.Rg6 Nf5 38.Bf6! Qf4 39.Bg5 hg5 40.Qh5 Nh6 41.Rh6 gh6 42.Qh6 1–0. Urbanaites,Elvira (1860) – Artemenko,Rimma (1685), RUS–ch (Women) 1st League, 2007.

4.Na3 ab4 5.Qb3=+.

4.Na3 d5 5.Qb3 (5.b5 e5=+) 5...e6 (5...e5 6.b5=+) 6.ba5 (6.Nc2 Nf6=+) 6...Qb3 (6...Qa5 7.c4=+) 7.ab3= Ra5 8.Nf3 Nd7 9.b4 (9.Ra2 e5=+) 9...Ra7 (9...Ra4 10.e3=) 10.e3 (10.d4 Bd6=) 10...Ngf6 11.Be2 Bd6 (11...e5 12.d3=) 12.0-0 0-0 13.Nc2 Ra1 14.Ra1 Nb8 (14...e5 15.d3=) 15.Ra7 Na6 16.Ba3 (16.b5 cb5 17.Ba3 b4 18.cb4 Bb8+=) 16...b5 (16...Bb8!? 17.Ra8 b5=+) 17.Nfd4= Bb8 (17...Nb8 18.f4=) 18.Re7+= Bd6 19.Ra7 (19.Nc6 Nb8 20.N2d4 Nc6 21.Nc6 Be7 22.Ne7 Kh8 23.Bb5 Bd7=) 19...Bb8 20.Re7 (20.Nc6 Ba7 21.Na7 Ne4+=) 20...Bd7 (20...Bd6 21.Nc6 Nb8 22.N2d4+=) 21.Rd7+= Nd7 22.Nc6 Nc7 23.N2d4 Nb6 24.Bb5 (24.Nb5 Nb5 25.Bb5 Bc7+=) 24...Nb5 (better 24...e5 25.Ne7 Kh8-/+) 25.Nb5+= Nc4 26.Bc1 (26.d3 Nd6 27.Ncd4 Rc8=) 26...Ne5= 27.Nbd4 (27.Ne7 Kh8 28.f4 Nd3=) 27...Nc6 28.Nc6 Bd6 (28...Bc7 29.Nd4=) 29.Nd4 Rc8 (29...Ra8 30.f4=) 30.Nb3 (30.Ne2 Kf8=) 30...Kf8 (30...e5 31.f3=) 31.h3 Be5 (better 31...e5=) 32.Kf1?? (better 32.Bb2=) 32...Bc3!-+ 33.Ba3 (33.dc3 Rc3) 33...Ra8 34.Na5 Bd2 35.Ke2 Bb4?? (better 35...Bc3-+) 36.Bb4= Ke8 37.Nc6 (37.Kd3 Kd7+=) 37…f6 (37...Ra4 38.Bd2=) ½–½. Mair,Bob – Lacroix,Peter, Canada op Edmonton, 2000.

4.Qa4 d5 5.Nf3=+.

4.Qb3 Qc7 5.e3 d6 6.c4 ab4 7.Qb4 e5 8.Qc3 (8.Nc3 Nf6 9.Nf3 Bf5+=) 8...Na6 9.d4 f6 (9...ed4 10.ed4 Qe7 11.Be2+=) 10.a3 (10.Nd2 Ne7=) 10...c5 (10...ed4 11.ed4 Qe7 12.Be2+=) 11.d5 f5 12.Nd2 (12.Qc2 Qb6=) 12...Nf6 13.Bd3 (13.Ngf3 e4 14.Ng1 Qf7=) 13...g6 (13...Be7 14.Ne2=) 14.Bc2 Bg7 15.Ngf3 0-0 16.0-0 Nb8 (16...Qe7 17.Rab1=) 17.Rfb1 h6 18.Qb3 (18.h3 b6=) 18...Qd8 19.Bc3 Ra6 (19...Nbd7 20.Bd1=) 20.Qb2 Nh5 21.g3 Nf6 (21...Nd7 22.Rf1=) 22.a4 Qe8 23.a5 g5 (23...e4 24.Ba4 Qf7 25.Ne1=) 24.Bd1 Nbd7 25.Ba4 Qh5 ½–½. Cagara,Paulina (1800) – Hanarz,Karolina (1900), Poland–chT2 South U20, 2000.

4.Qb3 e6 5.a3 Nf6 6.Qc2 ab4 (6...d5 7.Nf3=+) 7.cb4= Be7 8.f3 (8.Nf3 d5=) 8...0-0 9.e3 d5 10.Ne2 Qd8 11.h4 Bd6 12.h5 h6 13.Nbc3 Qc7 (13...e5 14.g4-/+) 14.Kf2 (14.g4 e5=+) 14...Nbd7 15.b5 cb5 16.Qb3 (better 16.Nd4-/+) 16...b4 17.Nb5 (17.ab4 Qc4 Double attack (17...Qc4 Decoy)) 17...Qb6 18.Nd6 Qd6 19.ab4 Ra1 20.Ba1 Nb6 (20...b6 21.d4=+) 21.Bf6= gf6 22.g4 e5 23.Rg1 Kh7 (23...Be6 24.d4=+) 24.Ng3 Nc4 25.Bc4 dc4 26.Qc4 Be6? (26...Qd2!? 27.Ne2 Kg7=) 27.Qe4 Kh8 28.Rd1 (28.Qb7?! Qd2 29.Ne2 Rc8=+) 28...Rg8 29.d4 Bd5?? (better 29...Qb4!? 30.d5 Qd6+-) 30.Qf5 (better 30.de5 Be4 31.Rd6 Bh7 32.ef6 Rb8+-) 30...Rg5? (30...Bc6 31.d5! Kg7 32.Ne4+- (32.dc6?! Qd1 33.g5 Qd2 34.Ne2 fg5+-)) 31.Qc8 (better 31.de5!? fe5 32.Qd3 e4 33.Qd4 Kg8+-) 31...Rg8 32.Qc5 Qc6 33.Qc6 Bc6 (33...bc6 34.e4 Bb3 35.Rd3+-) 34.d5 Rd8 35.e4 (worse 35.dc6 Rd1 36.cb7 Rd2 37.Ke1 Rd8+-) 35...Kg7 (35...Bd7 36.Rc1+-) 36.Nf5 White prepares the advance d6 (36.dc6?! Rd1 37.cb7 Rd8+-) 36...Kh7 37.Ne7 (37.dc6?! Rd1 38.cb7 Rd8+-) 37...Ba4 38.Ra1 Bb5 39.Ra7 Ba6 40.d6 (better 40.Nf5+-) 40...Rd6+- 41.Nd5 Kg7 42.Ke3 Rc6 43.Kd2 Rc4 44.Ra8 Rd4 45.Kc3 (better 45.Ke1+-) 45...Rd3=+ 46.Kb2 Rf3 47.Ne7 Rf4 48.Rg8 (better 48.Nf5!? Kh7 49.Nd6=+) 48...Kh7-+ 49.Rf8 Kg7 (worse 49...Re4 50.Rf7 Kh8 51.Rf6 Rg4 52.Rh6 Kg7 53.Nf5 Kg8 54.Kc3 Rc4 55.Kb3+=; 49...Rg4?! 50.Rf7 Rg7 51.Rg7 Kg7 52.Nf5 Kf8 53.Nd6-/+) 50.Rg8 Kh7 51.Rf8 Rg4 (51...Bc4!? 52.Nf5 Re4-+) 52.Rf7=+ Rg7 53.Rg7 Kg7 54.Nf5 Kh7 (54...Kf8 55.Nh6 Bd3 56.Ng4-/+) 55.Kc3 (55.Nd6 b5=) 55...Bb5 (55...Be2 56.Nd6 Bh5 57.Nb7=+) 56.Kd2 (better 56.Nd6 Bd7 57.Nb7+-) 56...Bc6 57.Ke3 Bd7 58.Nd6 Bc6 (better 58...b6!?-/+) 59.b5= Bd7 60.Kd3 (better 60.b6!? Bc6 61.Nf7=) 60...b6-/+ 61.Kc4 Kg7 62.Kd5 Kf8 63.Nc4 Bb5 64.Nb6 Be2 (better 64...Ke7-+) 65.Nd7?? (65.Ke6 Kg7 66.Kf5-+) 65...Kf7-+ 66.Kd6 (66.Nb6 Bh5 67.Nc4 Ke7-+) 66...Bh5 67.Nc5 Bf3 68.Kd5 h5 69.Nd3 h4 70.Nf2 Bg2 71.Ng4 h3 72.Nh2 Kg6 (72...Kg6 73.Kc4 f5 74.ef5 Kf5-+) 0–1. beatmeeasy (1920) – Zacek (1920), lichess.org, 2020.

5.d4 Nf6 6.Nd2 ab4 7.ab4 d5 8.e3 e6 (8...Bf5 9.Qb3=+) 9.Qc2 Qc7 10.Ngf3 Bd6 11.h3 0-0 12.Bd3 b6 13.e4 de4 (13...Ne4 14.Ne4 de4 15.Be4+=) 14.Ne4+= Ne4 15.Be4 f5 16.Bd3 Bb7 17.0-0-0?? (better is 17.Qe2 Qc8 18.Bc4+=) 17...c5-/+ 18.dc5 (better is 18.Qe2!? cb4 19.Qe6 Kh8 20.Qc4 Bf4 21.Kb1-+) 18...bc5-+ 19.b5 Nb8 (19...c4!? 20.Bf1 Be4 21.Qe2-+) 20.Kb1 (better is 20.Qe2 Bf4 21.Kc2-/+) 20...c4 21.Be2 (21.Ng5 Bg2 22.Ne6-+) 21...Be4 22.Bd3 cd3 23.Qd2 (23.Rd3 Qc4 24.Rhd1 Qb5 25.Ng5-+) 23…Bf4 (24.Qe1 d2 25.Qe4 fe4 26.Nd2 Rf5-+) 0–1. Jancso,Z – Pacsika,S, Sarospatak ch, 1992.

5.e4 d5 6.ed5 cd5 7.Ba6 (7.Nf3!?=) 7...Qa6 8.Qe2 (8.Ne2 Qd3-/+) 8...Bf5 9.Qa6 Ra6 10.b5 (10.Nf3!?-/+) 10...Re6-+ 11.Kd1 Bd3 (11...Rg6 12.Nf3-+) 12.Nf3 (12.Nh3 Bb5 13.a4 Bd7-+) 12...Bb5 13.Nd4 Ba4 14.Kc1 Rg6 15.g3 Nf6 16.d3 Ng4 17.f4? (17.Rf1-+) 17...Nf2 18.Rf1 (18.c4 Nh1 19.Nc3 Bd7-+) 18...Nd3 19.Kd2 Nb2 20.c4 (20.Ke2 Rh6 21.h4 Rg6-+) 20...Nc4 21.Kd3 (21.Ke2 Rh6 22.h4 Rb6-+) 21...e5 22.fe5 Ne5 23.Kd2 Bc5 24.Nf5 Rb6 25.Nc3 (25.Ra2-+) 25...Rb2 26.Kc1 Nd3 0–1. rikilatic – mrkt, myChess.de, 2005.

5.cb4 Na6 6.Bc3 (6.Nf3 d6=) 6...e6 (6...d6 7.Nf3=) 7.e3 (7.e4 d5 8.ed5 ed5=) 7...Bb4?? (better is 7...d6=) 8.Bg7+- (8...Be7 9.Bh8+-; 8.ab4?! Nf6+-) 1–0. coloplayah (1980) – tommyleandros, net–chess.com, 2006.

5.cb4 d6 6.Nf3 =.

5.e3 bc3-/+ 6.Bc3 d5 7.d4 (7.Bd4 c5 8.Qc2 Nd7-/+ (8...cd4?? 9.Qc8 Qd8 10.Bb5 Nc6 11.Bc6 bc6 12.Qc6 Qd7 13.Qa8 Qd8 14.Qa4 Qd7 15.Qd4+-)) 7...Bf5 8.Nd2 (8.Nf3 Nf6-/+) 8...e6 9.Qc1 (9.g4 Bg6 10.a4 Bd6-/+) 9...Nf6 10.f3 (10.Ngf3 Bd6-+) 10...Nbd7 (10...Bd6 11.Qb2 Nbd7 12.Ne2-+) 11.g4 Bg6 12.Ne2 (12.g5 Nh5-/+) 12...Bd6 13.g5 Nh5 14.f4 (14.e4 0-0-+) 14...0-0 15.Bh3 (15.Qb2 Qb2 16.Bb2 b5-+) 15...Bf5 (15...c5 16.dc5 Nc5 17.0-0-+) 16.Bf5 ef5 17.Kf2 (17.Qc2 Ba3 18.Qf5 Qd8-/+) 17...g6 (17...Rfe8!? 18.Qc2 Ra3 19.Rhb1-+) 18.Nf3 (18.Rb1 Qc7 19.Bb4 Bb4 20.Rb4 Rfe8-/+) 18...f6 (18...Rfe8 19.Rb1 Ba3 20.Rb6 Bc1 21.Rb7 Be3 22.Kf1 Nf4 23.Nf4 Bf4 24.Rd7-+) 19.h4 (19.Rb1 Qc7 20.Bb4 fg5 21.Ng5 c5=) 19...Qa6 (19...Rfe8 20.Ke1-+) 20.Bb4 Bb4 21.ab4 Qd3 22.Qc3 Qc3 23.Nc3=+ Nb6 24.Nd2 fg5 25.hg5 Ng7 26.Nf3 Nc4 27.b5 Ne6 28.Rhb1 Ra3 29.Ra3 Na3 30.Rb3 Nc4 31.bc6 bc6 32.Ke2 Rf7 33.Rb8 Rf8 34.Rf8 Kf8=+ 35.Ne1 Kg7 36.Nf3 h6 37.gh6 Kh6 38.Nd1 g5 39.fg5 Ng5 40.Nh4 Nd6 41.Nf3 Nf3 42.Kf3 Kg5 43.Nf2 Ne4 44.Nd3 Nd2 45.Ke2 Nb3 46.Nb4 Na5 47.Kf3 f4 48.Nc2 fe3-/+ 49.Ke3 Kf5 50.Kd3 Kf4 51.Nb4=+ Kf5 52.Nc2-/+ Ke6 53.Kc3 Kd6 54.Ne3 c5 55.dc5 Kc5 ½–½. Jalo,Pentti – Launamo,Juha, Helsinki op3, 1994.

6.b5 Qb5=+ 7.Qc2 Nf6 8.Nc3 Qc6 9.Nf3 e6 10.Ne5 (10.e4!?=) 10...Qc7-/+ 11.e3 d5 (worse 11...Qe5 12.Nb5 Qg5 13.Nc7 Kd8 14.Na8+-) 12.Nf3 Bd6 (12...Nc6 13.Nb5 Qa5 14.Rb1-/+) 13.Nb5=+ Qd7 (13...Qb6 14.Nd6 Qd6 15.Be5-/+) 14.Be2 (14.Ne5!? Qd8 15.Nd6 Qd6 16.Bb5 Bd7 17.Nd7 Nbd7 18.Bf6 gf6 19.Bd7 Kd7 20.Qb2=) 14...0-0=+ 15.Bf6 gf6 16.Nh4 Nc6 Black prepares the advance d4 17.Qd3 (17.Nd6 Qd6 18.0-0 Bd7=+) 17...d4 (17...c4 18.Qb1-/+) 18.ed4 Nd4 19.Nd4 cd4 20.Qf3 Be5 (20...f5 21.Qd3-/+) 21.Bd3 (better 21.Qg4 Kh8 22.Qe4-/+) 21...b6?? (better 21...f5-/+) 22.Qg4 Kh8 23.Qh5 (better 23.Qe4 f5 24.Qa8+- (24.Qe5?! f6 25.Qf4 Rg8+-)) 23...f5-/+ 24.g3 (24.Nf3!? Bg7 25.0-0-/+) 24...Ba6 25.Bb1?? (better 25.Ba6 d3 26.Rb1 Ra6 27.Nf3-/+) 25...Qd5 (25...d3 26.Ra2 Bc4 27.Nf3-+) 26.f3 (26.Qf3 d3 27.Qd5 ed5-+) 26...Rg8 (better 26...Qb5 27.f4 d3 28.fe5 Qe5 29.Kf2 Qa1-+) 27.g4?? (27.d3-+) 27...d3 (better 27...Qc4 28.d3 Qc1 29.Ke2 Qb2 30.Kf1 Rac8-+) 28.h3 (28.Ba2 Qc5 29.Rb1 Qc2-+) 28...Ba1 (28...Bg3 29.Kf1 Qc5 30.Ng6 Rg6 31.Qh7 Kh7 32.Rh2 Qc1 33.Kg2 Qe1 34.h4 Qf2 35.Kh3 Qh2) 29.Qf7 (29.0-0-+) 29...Qe5 30.Kf2 (30.Kd1 Qe2 31.Kc1 Rgc8 32.Bc2 Rc2 33.Kb1 Qe5 34.Ng6 hg6 35.Qe8 Re8 36.gf5 Qb2) 30...Qe2 (30...Bd4 31.Kg2 Qe2 32.Kg3 f4 33.Qf4 Qf2) 31.Kg3 f4! 32.Kf4 (32.Qf4 Be5 Pinning (32...Be5 Decoy); 32.Kf4 Qe5 Mate attack) 32…Be5 0–1. alessandrocarvalhaes (1825) – Lenin86 (1830), lichess.org, 2020.

6.Qc2 cb4?? (better is 6...Na6+=) 7.Qc8+- Qd8 8.Qb7 Nc6 9.Qb5 ba3 10.Ba3 (10.Na3?! Rb8=; 10.Ra3?! Rb8 11.Qa4 Rb2+=) 10...Ra5 11.Qb2 Qa8 12.Nf3 e6 13.e3 Ba3 14.Na3 Nf6 15.Bb5 0-0 16.Bc6 dc6 17.0-0 Rb8 18.Qc3 Nd5 19.Qd3 h6 20.Nc2 Rb2 21.Ra5 Qb8 22.g3 Rb3 23.Qc4 Rb1 24.Qc6 Rf1 25.Kf1 Kh7 26.Ra8 Qb1 27.Nce1 g5 28.Qc2 Qc2 29.Nc2 Kg6 30.g4 h5 31.Rg8 Kf6 32.gh5 Ne7 33.Rg5 Nf5 34.e4 Ne7 35.e5 1–0. caliu (1620) – maddoxdb, gameknot.com, 2012.

6.Bc3 Nf6 (6...cb4 7.Qb3=+) 7.Nf3 (7.bc5 Qc5 8.Nf3 Nc6=) 7...d5 (7...e6 8.bc5 Bc5 9.e3=) 8.e3 (8.bc5 Qc5 9.e3 Nc6=) 8...Bg4 (8...cb4 9.Bd4 Qd8 10.ab4 Ra1 11.Ba1=) 9.h3 (9.bc5!? Qc5 10.Qb3+=) 9...Bf3=+ 10.Qf3 d4?? (better is 10...cb4 11.Bd4 Qd6=+) 11.ed4?? (11...cd4 12.Bb2=; better is 11.bc5 Qc7 12.Bb5 Nbd7 13.ed4+-) 1–0. coloplayah (2140) – jerrytong, net–chess.com, 2006.

6.Nc3 e6 (6...cb4 7.Nd5 Qd6 8.Nb4 Nc6=) 7.b5?? (better is 7.Na4 Qa7 8.Nc5+/–) 7...d5+= 8.e3 Nf6 9.Nf3 Bd6 10.Be2 Bd7 11.a4 e5 12.0-0 e4 13.Ne1 Qc7 14.f4 h5 15.d3= g5?? 16.de4 gf4 17.Nd5 Nd5 18.Qd5 Rh6 19.e5 Be7 20.ef4 Be6 21.Qe4 Qb6 22.f5 Bd7 23.e6! fe6 24.f6 Bd6 25.f7 Kf8 26.Bc1 Rh8 27.Qe3 Qd8 28.Qh6!! Rh6 29.Bh6 Ke7 30.Bg5 Kf8 31.Bd8 (31.Bd8 Kg7 32.Ra3+-) 1–0. Akimov,Gennadiy (1955) – Ishpulaeva,Veronika, Dimitrovgrad RUS, Petrosian Mem, 2011.

6.bc5 Qc5 7.Nc3 d5 +=.

6.Qc2 Nf6 7.Nf3 Nbd7 8.e3 e6 9.Be2 Bd6 10.d4 Qc7 (10...0-0 11.0-0=) 11.0-0 (11.Nc3 0-0=) 11...e5 12.de5 Ne5 13.Ne5 (13.Nbd2 0-0=) 13...Be5 14.Be5 Qe5 15.Nd2 Bf5 16.Bd3 (16.Qc1 Nd7=+) 16...Bd3=+ 17.Qd3 0-0 18.Nf3 Qe4 19.Qc3 ½–½. Kouba,V (1825) – Lochman,Vaclav (2015), 9th Niki Open, 2011.

6.d4 Bf5 7.Nf3 Nd7 (7...Nf6 8.Nc3=) 8.e3 (8.Nh4 Bb1 9.Rb1 e6=+) 8...Nh6 9.Qd2 (9.Nh4 Bg4 10.Nf3 e6=+) 9...e6=+ 10.h3 (10.Nc3 Bd6=+) 10...Bd6 (10...Bb4 11.Qb4 Qb4 12.ab4 Ra1 13.Ba1 Bb1 14.Nd2-/+) 11.Nc3 0-0 (11...Bg6 12.Nh4=+) 12.Nh4 (12.Be2 Nf6=+) 12...e5 (12...Be4 13.Be2=+) 13.g4 (13.de5 Ne5 14.Nf5 Nf5=) 13...ed4 (13...Be6 14.de5 Ne5 15.e4=+) 14.Nf5 (14.Nd5!? cd5 15.Bd4 (< 15.Nf5 Nf5 16.gf5 de3 17.fe3 Be5-/+; 15.gf5? de3 16.Qd4 Qd4 17.Bd4 ef2 18.Kf2 Be7-+) 15...Bb4 16.Qb4 (< 16.Bb6 Bd2 17.Kd2 Be4=+) 16...Qb4 17.ab4 Ra1 18.Ba1+=) 14...Nf5=+ 15.Nd5 cd5 16.gf5 de3 17.fe3 Bg3 18.Kd1 Ne5?? 19.Bd4 Qd6= 20.Bg2 Nc4=+ 21.Qc3 f6 22.Bc5 Qe5?? 23.Qe5+- Be5 24.Bd5 Kh8 25.Bf8?? Ba1?? 26.Bc4 Rf8+/– 27.Kc2 Rc8 28.Kb3 Be5+/– 29.Rd1 h5 30.e4 (30.Rd7 Rc7 31.Rc7 Bc7+-) ½–½. alaamattar (2205) – rbeckett (2120), net–chess.com, 2005.

6.e3 Nd7 7.Bd4 (7.Nf3!?=) 7...Qc7+= 8.Nf3 e5 9.Bb2 Ngf6 10.Be2 Bd6 11.h3 (11.Nc3 Nb6+=) 11...0-0 12.Qc2 h6 13.0-0 Nb6 14.Nc3 Be6 15.d3 Rfc8 16.Rfc1 Bf5 17.Qd1 (17.Qb3 Qe7+=) 17...Qe7-/+ 18.Qe1 (18.Qb3 e4 19.de4 de4-/+) 18...e4 19.de4 Ne4 (19...de4 20.Nd2-/+) 20.Qf1 (20.Ne4 Be4 21.Qc3 Qf8+=) 20...Nc3 (20...Ng5 21.Ng5 Qg5 22.Rd1-/+) 21.Bc3 Na4 22.Bd4 b6 23.Bd3 Bd3 (23...Be4 24.Ra2-/+) 24.Qd3 c5 25.bc5 (25.Bc3 Qe6+=) 25...bc5-/+ 26.Bc3 Nc3 (26...Qe6 27.Rd1 Ra6 A) 28.Qa6? Bh2 (28...Nc3?! 29.Kf1 Nd1 30.Rd1=) 29.Kh2 Qa6-+; B) 28.Qc2-/+) 27.Rc3 (27.Qc3 Ra4-/+) 27...Be5 (27...Rd8!?-/+) 28.Ne5+= Qe5 29.Rd1 c4 (29...Ra5 30.f4 Qf6 31.Qd2+=) 30.Qc2 (30.Qd4 Qd4 31.Rd4 Ra5=) 30...Rcb8 (30...g6 31.Qd2+=) 31.Rd4 (31.e4 de4 32.Rc4 e3+=) 31...Rb5 32.Qd1 Rba5 (32...Rb2 33.a4+=) 33.f4 (33.Rc1 Rc5 34.a4 Rac8+=) 33...Qe6-/+ 34.Qc1 (34.e4 A) 34...Ra3?! 35.ed5 Qb6 36.Ra3 (36.Rcc4?? Ra1 37.Kh2 Rd1 38.Rd1 Ra2-+) 36...Ra3 37.Kh2=; B) 34...de4 35.Qe2 Qb6 36.Rcc4 f5-/+) 34...f5 35.Kh2 Qe7 (35...Rb8 36.Rd1-/+) 36.Qc2 Qe6 (worse is 36...Ra3 37.Rd5 Rc3 38.Qc3+=) ½–½. Veer,Willem (1940) – Ramos Dos,Rosangela, National Championship, 2010.

6.e3 Nf6 7.Nf3 e6 8.Nc3 Be7 9.d4 Nbd7 10.Bd3 Qc7 11.0-0 b5 (11...Qd6 12.Rc1+=) 12.Rc1 Qb6 13.h3 Bb7 14.Ne5 Ne5 15.de5 Nd7 16.Ne2 (16.Qh5 Ra7+=) 16...Qc7 (16...c5 17.bc5 Nc5 18.Nd4 Nd3 19.Qd3=) 17.f4 Qb6 18.Nd4 0-0 19.Qb3 Rfc8 20.Qc2 c5 21.Bh7 (21.bc5 Bc5 22.Qb1 Nf8=) 21...Kf8 (21...Kh8 22.bc5 Rc5 23.Qb1 Rc1 24.Bc1 Ba3 25.Ba3 Ra3 26.Qb4 Re3 27.Bc2=) 22.bc5= Nc5 (22...Bc5!? 23.Qf2 g6+=) 23.Qb1 Na4 24.Bd3 Exerts pressure on the isolated pawn 24...Nb2 25.Qb2 The pressure on the isolated pawn grows (25.Rc8 Bc8 26.Qb2 Ra3 27.Qb5 Qb5 28.Bb5 Bb7+/-) 25...Ba3 (better 25...Rc1 26.Qc1 Ba3=) 26.Qb1?? (better 26.Rc8 Bc8 27.Qb5 Qb5 28.Bb5+/-) 26...Bc1 27.Rc1 Rc1 28.Qc1 Rc8 (28...b4 29.Qb1-+) 29.Qf1 (29.Qe1 Ba6-/+) 29...b4-+ 30.Qf3 (30.f5 ef5 31.Qf5 Qh6-+) 30...g6 (30...b3 31.Kh2 b2 32.f5-+) 31.Qg4? (31.Qe2 Rc1 32.Kh2 Kg7-+) 31...Ba6 (better 31...b3 32.Kh2 b2-+) 32.Bc2?? (32.Ba6 Qa6 33.Qh4 Kg8-+) 32...Rc3 (32...Rc2!? 33.Nc2 b3 34.Na3 Qe3 35.Kh2-+) 33.Qg5? (33.Qh4 b3 34.Qh8 Ke7 35.Qf6 Ke8 36.Bb3 Rb3 37.Qh8 Kd7-+) 33...Re3 (better 33...Rc2!? 34.Nc2 b3 35.Na3-+) 34.Qd8 (34.Kh2 Bd3 35.Ba4-+) 34…Qd8 (34...Qd8 35.Kf2 Rc3 36.Ne6 fe6 37.Bd3 Qh4 38.g3 Qh3 39.Ke2 Qg2 40.Kd1 Bd3 41.f5 Qe2) 0-1. POLSKA_HUSARIA (1995) - BeepBeepImAJeep (2655), lichess.org, 2017.

6.e3 Nf6 7.Nf3 Bf5 8.Be2 Nbd7 9.0-0 e6 10.d4 Bd6 11.Nbd2 h5 (11...Qc7 12.h3=) 12.Nb3 h4 13.Nc5 Bb8 (13...h3 14.g3=) 14.h3 Qc7 (14...Bd6 15.Rc1=) 15.Nd7 (15.a4 0-0+=) 15...Nd7= 16.b5 Be4 17.Ne5 f6 (17...Ne5 18.de5 c5 19.Bc3=) 18.Ng4 Bf5 19.f4 Nf8 (19...c5 20.dc5 Nc5 21.Bd4=) 20.a4 Ng6 21.Ba3 e5? (21...Kf7 22.Qb3+=) 22.Rc1?? (22.fe5 Bg4 23.Bg4 fe5 24.b6 Qb6 25.Bd7 Kd7 26.Qg4 Kd8 27.Rf7+-) 22...ed4 23.bc6 Qc6?? (23...bc6 24.Bb5 cb5 25.Rc7 Bc7 26.Qd4 Ra4 27.Qd5 Bg4 28.hg4 Ra3 29.Qb5 Ke7+-) 24.Rc6+- (24.Rc6 bc6 25.Bd3 Bd3 26.Qd3+-) 1–0. BeepBeepImAJeep (2595) – Berthe (2405), lichess.org, 2015.

6.Nf3 Bg4 7.Bd4 Qd8 8.h3 Bf3 9.ef3 Nd7 10.Be2 (10.f4 e6=+) 10...e5 11.Bb2 Ngf6 12.0-0 Bd6 13.d3 (13.Re1 0-0=+) 13...0-0 14.Nd2 (14.d4 Re8=+) 14...Re8 15.Re1 Qc7 (15...Nh5 16.d4-/+) 16.Kf1 (16.d4 Re7=+) 16...Kf8 (16...Nh5 17.g3-/+) 17.Rc1 1–0. Klawitter,Bernd – Benone,Mateia, FICGS, 2015.

7.Nc3 e5=+ 8.Na4 Qc7 =+.

7.Nc3 e5=+ 8.d4 e4 9.h4 (9.Nge2 Bd6=+) 9...Nf6 10.Be2 (10.Nge2-/+) 10...h5 (10...Bd6!?-/+) 11.Nh3 (11.Na4 Qd8=) 11...Bd6=+ 12.Ng5 Nbd7 13.0-0 Qc7 (13...Rg8 14.Rc1=) 14.f4 (14.Rc1 Rg8=) 14...Ng4 15.Bg4 (15.Qd2 0-0=+) 15...hg4-/+ 16.Rc1 Nb6 (16...Qb6 17.Qe1 f6-+) 17.Qb3? (17.Nb5 Qd7 18.Nd6 Qd6 19.b5-+) 17...Rh4-+ 18.g3 (18.Nb5 Qd7 (18...cb5?! 19.Rc7 Bc7 20.g3=) 19.Nd6 Qd6-+) 18...Rh5 19.a4 (better is 19.Nb5 Qd7 20.Nd6 Qd6 21.b5-+) 19...Be6 (19...Be7 20.Nb5 Qb8 21.Nf7 Na4 22.Ne5 cb5 23.Qd5-+) 20.Nce4 (20.a5 Nd7-/+) 20...Ra4 21.Rc5? Be7 22.Ra5 Rb4 23.Qa2? Bg5 24.Ng5 Rg5! 25.Bc3 Rc4 26.Qb3 Bf5 27.Ra7 Rh5 28.Rf2 Rh3 29.Rh2 Rg3 30.Kf2 Rf3 31.Ke2 Rh3 32.Rh3 gh3 33.Ba5 Rc2 34.Kf3 h2 35.Qc2 Bc2 36.Kg2 Be4 37.Kh2 g5 38.Kg3 gf4 39.ef4 Kd7 (40.Kg4 f5 41.Kg3 Ke6-+) 0–1. Roell,Uwe – Simon,Thomas, Dortmund–ch, 1994.

7.Nc3 e5 8.Nf3 Bd6 9.d4 =+.

7.Nc3 Nf6 8.h4 (8.Nf3!?=) 8...Nbd7 9.d4 (9.Qf3 Bg4 10.Qg3 e5-/+) 9...Qc7 (9...e5 10.de5 Bg4 11.Qd4 Qd4 12.ed4+/–) 10.Rc1 (10.Nf3 e6=+) 10...e5 11.h5 (11.Qf3 Bg6=+) 11...e4 (11...Bd6 12.Nb5 Qb8 13.Nd6 Qd6 14.h6=) 12.Be2 Nb6 (12...Qb6 13.h6=+) 13.g4 (better is 13.h6=) 13...Nc4?? (better is 13...Be6=+) 14.Bc4+/– (14.gf5 Nb2 15.Qd2 Nd3 16.Bd3 ed3=) 14...Ng4? (better is 14...Bg4 15.Be2 Be2 16.Nge2 Rg8+-) 15.Nd5!+- Qd8 (15...cd5 16.Bb5) 16.Nf4 Be7 (16...Bd6 17.d5 0-0 18.dc6 bc6 19.Be2+-) 17.Qb3 (17.d5 Bh4 18.dc6 Bf2 19.Ke2 Qd1 20.Rd1 bc6+-) 17...0-0 18.d5 b5 19.Be2 cd5 20.Qd5 (20…Bf6 21.Qd8 Rfd8 22.Bf6 Nf6 23.Bb5 Ra3 24.Nge2+-) 1–0. Roell,Uwe – Lasberg,Ralf, Dortmund–ch, 1994.

7.Bd4 Qd8 =.

6.Nc3 d5 7.Nf3 Bf5 8.e3 e6 9.Be2 Bd6 10.0-0 Nbd7 11.d3 Qc7 12.h3 h6 13.Rc1 Qb8 14.e4 Bh7 15.Nd2 0-0 16.Qe1 Rc8 17.g3 c5 18.Nb5 Bf8 19.bc5 Rc5 20.Rc5 Bc5 21.d4 Be7 22.e5 Ne4 23.Ne4 Be4 24.Qd2 Bf5 25.g4 Be4 26.Rc1 Qd8 27.Rc7 Rc8 28.Qc3 Rc7 29.Qc7 Qc7 30.Nc7 Nb6 31.Nb5 Kf8 32.Bc3 32...Ke8 (32...Nc4 33.Bb4=) 33.Ba5 (33.Nd6 Bd6 34.Bb5 Ke7 35.ed6 Kd6 36.Bb4 Kc7=) 33...Nc4= 34.Bb4 Bb4 (34...Bc2 35.Kf1=) 35.ab4 Ke7 36.Bc4 (36.f3 Bg6=) 36...dc4 37.Nc3 Bc6 38.f4 g5 (38...b5 39.Kf2=) 39.f5 (39.b5 Bd5=) 39...f6 (39...ef5 40.gf5 Bd7 41.f6 Ke6 42.Kf2-/+) 40.b5 Bd7 41.ef6 Kf6 42.Ne4? (42.fe6!? Ke6 43.Kf2=) 42...Ke7-/+ 43.f6 (43.fe6 Bb5 44.Nc3-+) 43...Kf7 (better 43...Kf8!? 44.Kf2 Bb5-/+) 44.Kf2 (44.b6 c3 45.Nc3 Bc6=+) 44...c3 (44...b6 45.Kf3=+) 45.Ke3= Kg6 46.Nc3 Kf6 47.Kd3 Ke7 48.Kc4 Kd6 49.Ne4 Kc7 50.Nf6 Kd6 51.Ng8 b6 52.Nf6 Ke7 53.Ne4 Bc8 54.Nc3 (54.Kd3 Bb7=) 54...Kd6 (54...Bb7!?-/+) 55.Ne4 Ke7 56.Nc3 Bb7 57.Na4 Bg2 58.Nb6 Bh3 59.Kc5 Bg4 60.Nc4? (better 60.d5 ed5 61.Nd5 Kd8 62.Kd4-/+) 60...Bf3-+ 61.Ne5 g4?? (better 61...Ba8 62.Kb6 h5-+) 62.b6= Kd8 63.Kc4?? (better 63.Kd6 Kc8 64.Ke6=) 63...h5 64.Kd3 (64.Nf3?? gf3 65.Kd3 Kc8-+) 64...Bb7 65.Ke3 g3 66.Ng6 Ke8 (better 66...Kd7-+) 67.d5-/+ g2 (67...ed5 68.Kf3 Kf7 69.Nh4=+) 68.Kf2=+ Bd5 (68...ed5!? 69.Kg2 d4 70.Kf2 Kf7 71.Ne5 Ke6=) 69.Nf4= Kd7 70.Nh5 Bb7 71.Nf4 Kd6 72.Ng2 Bg2 73.Kg2 Kc6 74.Kf3 Kb6 75.Ke4 Kc7 76.Ke5 Kd7 77.Ke4 Kd6 78.Kd4 Ke7 79.Ke5 Kf7 80.Ke4 Kf6 81.Kf4 e5 82.Ke4 Ke6 83.Ke3 Kf5 84.Kf3 e4 85.Ke3 Ke5 86.Ke2 Kf5 ½–½. Valenta,Vit (2035) – Hajek,Oskar (2125), Memorial Tomase Bastince, 2017.

6.Nc3 d6 7.e4 (7.Nf3 Bf5+=) 7...Qd8 (7...Nbd7 8.Be2=) 8.d4 e5 (8...Nbd7 9.Nf3+=) 9.Nf3 (9.de5 de5 10.Qd8 Kd8 11.0-0-0 Ke7+/-) 9...Nbd7+= 10.Bc4 (10.Be2 Be7+=) 10...Be7 11.0-0 0-0 12.Rc1 (12.Be2 Qb6+=) 12...Qc7 (12...b5 13.Be2=) 13.Re1 Re8? (13...Qb8 14.a4+=) 14.Nb5?? (better 14.Qb3 Rf8 15.Bf7 Kh8 16.Be6+-) 14...Qb8 (14...cb5?? 15.Bf7 Kf7 16.Rc7+-) 15.de5 de5?? (better 15...Ne5 16.Be5 de5+=) 16.Bf7+- Kf7 (16...Kf8 17.Be8 Ne8 18.Nc3+-) 17.Qb3 Kf8 (17...Kg6 18.Nh4 Kg5 19.Rc6 Ra3 20.Na3 Kh6 21.Nf5 Kh5 22.Qh3 Kg5 23.Bc1 Kg6 24.Qg4 Kf7 25.Qg7) 18.Ng5 Nd5 19.Ne6 Kg8 (19...Kf7 20.Nbc7 Bb4 21.ab4 (21.ed5 Be1 22.Re1 Nf6 23.Ne8 Be6 24.Nf6 cd5 25.Be5 Qc8 26.Nd5 Qd7+-) 21...Re6 22.ed5 cd5 23.Qd5+-) 20.ed5 cb5 (20...Kh8 21.Nbc7 Rg8 22.dc6 bc6 23.Na8 Qa8 24.Qf3+-) 21.d6! Kh8 (21...Qd6 22.Ng5 Mate attack; 21...Bd6 22.Nd8 Mate attack) 22.de7 (22.Nc7 Nf6 23.Ne8 Bd7 24.Be5 h6 25.Nf6 Bf6 26.Bf6 Qd6 27.Bg7 Kg7+-) 22...Nf6 (22...Re7 23.Nd8 h5+-) 23.Ng5 Re7 24.Be5 h6 (24...Be6 25.Bb8 Bb3 26.Rc8 Bg8 27.Re7 h6+-) 25.Bb8 Rb8 26.Re7 (26.Re7 Bg4 27.Qf7 Rg8 28.Qf6 hg5 29.Rcc7 Bd7 30.Rcd7 b6 31.Rg7 Rg7 32.Qg7) 1-0. allyouneedisluft (2635) - igo1 (2335), Rated Bullet game, lichess.org, 2016.

6.e3 d5 7.d4 Bf5 8.Nf3 Ne4 9.Bd3 Nd7 10.Nbd2?? (10.Nh4 Bg6+=) 10...Nd2?? (better is 10...Nf2!? 11.Kf2 Bd3-+) 11.Qd2 Bd3 12.Qd3 e6 13.0-0 Bd6 14.Ng5 h6 15.Nf3 Qc7 16.Rac1 Qb8 17.Rfe1 Nf6 18.h3 Ne4 19.Nd2 Bh2 20.Kf1 Nd2 21.Qd2 Bd6 22.Kg1 ½–½. Jokmin,Alex – Feng,Jason, SN–2009–0-00200, 2009.

6.e3 d5 7.Be2 Bf5 8.Nc3 e6 9.Nf3= Bd6 10.Nd4 Bg6=+ 11.0-0 0-0 12.f4= Nbd7 13.Nb3 c5 14.bc5 Nc5=+ 15.Nb5 Nd3 16.Bf6 gf6?? 17.N3d4 Be4 18.Qb3 Nc5 19.Qa2 Be7 20.Nc3 f5 21.Ne4 Ne4 22.Rfb1 Qd8 23.a4 Rb8 24.a5+= Bf6 25.Rb4 Kh8 26.Rab1 Bd4 27.Rd4+= ½–½. Brinzei,R – Bololoi,S, corr, 1966.

6.e3 d6 7.Bd4 c5 8.bc5 dc5 9.Bc3 =.

6.e3 d6 7.Bd4 c5 8.Bf6 ef6 9.Nc3 =.

6.e3 d6 7.Bd4 Qc7 8.Bf6 ef6 9.d4 Be7 (9...d5 10.Nd2=) 10.Bd3 0-0 (10...c5 11.Nd2=) 11.Nf3 Na6 (11...d5 12.Nbd2=) 12.Nc3+= c5 (12...Bg4 13.0-0+=) 13.Nd5 Qd8 14.Ne7 (14.b5 Nc7 15.Nb6 Rb8+/–) 14...Qe7 15.bc5 dc5 16.Qc2 cd4 17.Nd4 Nc5 (better is 17...h6!?+=) 18.Bh7+/– Kh8 19.Bf5 Bf5 20.Qf5 Kg8 21.0-0 Ne4 (21...Ra5 22.Qg4 Rfa8 23.Nf5+/–) 22.Qg4+- Nd2?? (better is 22...Nd6+-) 23.Nf5 Qe4 24.Qg7 1–0. market (2245) – Tofte, GameColony.com, 2002.

6.e3 d6 7.f4 Bf5 =.

6.e3 e6 7.Bf6 gf6 8.Qb3 (8.Nc3 Qa7=) 8...Bb4=+ 9.Nc3 (9.Qb2 Qa5 10.Qf6 Rg8=+) 9...Ba5 (9...Qa5 10.Ne4=+) 10.Qb6 Bb6 11.Nge2 (11.d4 Ba5 12.Rc1 b5-/+) 11...Bc7 (11...d5 12.d4-/+) 12.Nd4 (12.Ne4 f5 13.Nc5 d6-/+) 12...b5 (12...d5 13.Be2-/+) 13.Ne4 Ke7 14.Bd3 f5 15.Nc5 d6 16.Ncb3 c5 17.Nb5= Bd8 18.Nc3 Bd7 19.0-0 Nc6 20.Bb5 Ne5 21.Bd7 Kd7 22.d4 Rg8?? 23.de5+- de5? 24.Nc5 Ke7 25.Rad1 Ba5 26.Rd7 Kf6 27.Nb5 Rg6 28.Nd6 Rf8 29.f4 ef4 30.ef4 Bb6 (31.Rc1 Rg7+-). HMBCHESS2 – deadmonk, Live Game Caissa's Web, 2005.

6.Nf3 g6 7.g3 Bg7 8.Bg2 0-0 9.e3 d6 10.d3 e5 11.Nbd2 Be6 12.Qc2 Nbd7 13.h3 Qa6 14.0-0 Nb6 15.Rfd1 (15.Rac1 Qa4=) 15...Na4=+ 16.Bc1 Nd7 17.e4 f5 (17...h6 18.Nb3=+) 18.Re1 (18.Ng5 Bf7+=) 18...Ndb6 (18...fe4!? 19.de4 Bf6=+) 19.Ng5= Bd7 (19...Bf7 20.Rb1=) 20.Ngf3 (better 20.Qb3 Kh8 21.Nf7 Rf7 22.Qf7 Qd3 23.Rb1+=) 20...d5 21.Nb3 Rae8 (21...fe4 22.de4 Bh3 23.Bh3 Rf3 24.Nc5-/+) 22.Bd2 (22.Nc5 Nc5 23.bc5 Na4=+) 22...Qa8 (22...fe4 23.de4 Bh3 24.Bh3 Rf3 25.Bg2-/+) 23.Na5 Qc8 24.Qa4?? (better 24.b5=+) 24...Na4-+ 25.Rac1 (25.ed5 e4 26.dc6 Ba1 27.cd7 Qd7 (27...ef3?! 28.dc8Q Re1 29.Be1 Rc8 30.Bf3-+) 28.Ra1 b6-+) 25...fe4 26.de4 Bh3 27.Bh1 d4 28.Nc4 Bg4 (28...Qg4 29.Ng5-+) 29.Nh2 (29.Nd6 Qe6 30.Ne8 Bf3 31.Bf3 Rf3 32.Ng7 Kg7-+) 29...Qe6 30.Na5 (30.Ng4 Qg4 31.Bg2 Rd8-+) 30...Rf7 31.Bg2 Nb2 32.Bf1 Bh3 33.Be2 d3 34.Bf3 (34.Bf1 Ref8 35.Be3 Rd8 36.Bh3 Qh3-+) 34...Ref8 35.Re3 (35.Rc3 Qa2 36.Nb3 Qa3-+) 35...Bh6 36.Ree1 Bd2 37.Red1 Bc1 38.Rc1 Rf3 39.Nf3 Rf3 40.Nb7 d2 (40...Qg4 41.Rc6 Rg3 42.fg3 Qg3 43.Kh1 Qg2) 41.Rb1 d1Q 42.Rd1 Nd1 43.Nc5 (43.Kh2 Rf2 44.Kg1 Qc4 45.Nc5 Qf1) 43...Qa2 (43...Rg3 44.fg3 Qa2 45.b5 Qg2) 44.Kh2 (44.Nd3 Rf2 45.Nb2 Qb2 46.b5 Rf1) 44...Qf2 45.Kh3 Qg3 0–1. alessandrocarvalhaes (1810) – Buraya_Raketa (1935), lichess.org, 2019.

5.Qa4 Ra7 6.b5 d5 7.c4 dc4 8.Nc3 Nf6 9.e3 Nbd7 10.Nf3 Qd6 11.b6 Qb6 12.Bc4 e6 13.Nb5 Qc6? 14.Ne5 Ne5+/– 15.Be5 Nd7 16.Bg3+- Nb6 17.Qb3 a4 18.Qb1?? Ra5 19.Nc7 Ke7 20.Bb5 Qg2= 21.Ne8?? Qh1 22.Ke2 Qb1 23.Bd6= Kd8 24.Bc7 (24.Rb1?? Bd6 25.Nd6 Ke7-+) ½–½. Draves,Rodney – Christensen,Wade (1785), Milwaukee, Wisconsin State Closed Ch USA, 2009.

5.Qa4 Ra7 6.b5 d5 7.c4 dc4 8.e3 Nd7 =.

5.Qa4 Ra7 6.b5 d5 7.d3 Nd7 (7...e5 8.e4 Bd7 9.ed5 Bb5 10.Qc2=) 8.c4 (8.e4 e6=) 8...d4 9.Nf3 Qc7 (9...e5 10.e3=) 10.g3 (10.e3 e5=) 10...h6 (10...Ngf6 11.Bg2=) 11.Bg2 b6 (11...Ngf6 12.0-0=) 12.0-0 e5 13.Nbd2 (13.e3 Ngf6=) 13...Be7 (13...Ngf6 14.e3=) 14.Ne1 (14.e3 Bb7+=) 14...Ngf6= 15.Bc6 (15.e3 0-0=) 15...0-0 16.e3 (16.Nc2 Qd6=) 16...Nh7 (16...Rd8 17.Bf3=) 17.ed4 (17.Nc2 Nhf6=) 17...ed4 18.f4 (18.Bg2 Re8=) 18...Ndf6 (18...Nhf6 19.Nc2=) 19.Nef3 Ng4 20.Rfe1 Ne3 21.Nf1 Nf5 22.Ne5 Bd6 23.Qd1 Ne7= 24.Bg2 Be5 25.Re5 Nf6 26.Bf3 Bh3 27.a4 Qc8 28.Qd2 Ng4 29.Bg4 Qg4 Black fights for the Initiative 30.Qe2 Ng6 31.Qg4 Bg4 32.Ree1 Bf5 33.Rad1 Re7 34.Re7 Ne7 35.Kg2 Re8 36.Bc1 Ng6 37.Kf2 Nf8 38.Ba3 Nd7 39.g4 Bg4-+ 40.Re1 Re1 41.Ke1 g6 42.Ng3 Bf3 43.Ne4 Be4 44.de4 Nf6 45.e5 Nd7 46.Ke2 Kf8-+ 47.Kd3 Ke7 48.Bc1 Ke6 49.Ke4 f6 50.ef6 Nf6 51.Kf3 Kf5 (52.h3 Ne4-+) 0–1. Scholz,J – Pfeiffer,U, corr, 1972.

5.Qa4 Ra7 6.b5 Nf6 7.c4 e6 8.Nf3 Be7 9.e3 0-0 10.Bd3 d5 11.Nc3 d4 (11...Nbd7 12.0-0=) 12.Ne2+= de3 13.de3 Rd8 14.Nf4 Nbd7 15.0-0 e5 (better 15...Bd6!?+=) 16.Ne5+- (16.Be5?! Ne5 17.Ne5 Bd6 18.Bh7 Kf8 (18...Nh7?? 19.Nd5+-) 19.Nf7 Kf7 20.Bg6 Kg8=) 16...Ne5 17.Be5 Bg4 (17...Ng4 18.Bb2+-) 18.f3 Be6 19.Qc2 (19.Ne6?! Qe6 20.Bf6 Bf6=) 19...h6 20.Rad1 Nd7 21.Ne6 Qe6 22.Bc7 Rc8 (better 22...Re8+-) 23.Bf4 b6 (23...g6 24.Bg6! fg6 25.Rd7 Re8+-) 24.Bh7 Kh8 25.Bf5 Qf6 26.Rd7 Rd7 27.Bd7 Rd8 28.Rd1 g5 (28...Rf8 29.Qe4+-) 29.Bc7 Rg8 (29...Kg7+-) 30.Qe4 Qg6 1–0. Elce4 – Dtt12, internet, 2019.

5.Qa4 Nc6 6.b5 =.

5.Qa4 e6 6.b5 d5 7.c4 Nd7 =.

5.Qa4 e6 6.b5 d5 7.e3 c4 8.d3 cd3 9.Bd3 Nd7 10.Nf3 (10.Qc2 Ngf6=) 10...Nc5 (10...e5 11.Be2 e4 12.Nd4=+) 11.Qc2 Nd3 (11...Bd7 12.a4=) 12.Qd3= a4 (12...Bd7 13.a4=) 13.c4 dc4 14.Qc4 Bd7 15.Nc3 Nf6 16.Ne5 Bd6 17.Nd7 Nd7 (17...Kd7 18.0-0 Rhc8 A) 19.Na4? Qa5 (19...Rc4?? 20.Nb6 Ke7 21.Nc4+–) 20.Qd3 Qa4–+; B) 19.Qd3+=) 18.Na4 (18.Rd1 Ne5 19.Qe2 f5+/–) 18...Qa5 19.Nc3 Ne5 (19...0-0 20.Qd3 Be5 21.0-0=+) 20.Qe2+= Rc8 (better is 20...f5+=) 21.Rc1 Nc4 22.Ba1?? Ba3=+ 23.Rc2 Bb4–+ 24.0-0 Na3 25.Ra2 Bc3 26.Rc1?? 0-0 27.Bc3 Rc3 28.Qb2 Rfc8 29.Rca1 Qc7 30.g3 Rc1 31.Kg2 Ra1 32.Qa1 Nb5 33.Ra8 b6 34.Kh3 Nd6 35.Ra7 Qc3 36.Qd1 Qc6 37.Qg4 Qe4 38.Qd1 Qf5 39.g4 Qd5 40.Qa4 Qf3 41.Kh4 Qf2 42.Kh3 Qe3 43.Kh4 Qf2 44.Kh3 Rc3 0–1. Todaro,Giuseppe – Alaimo,Riccardo, Catania, 1993.

5.Qa4 e6 6.e4 Be7 7.Nf3 Nf6 8.e5 Nd5 9.d4 0-0 10.dc5 Bc5 11.Qc2 Be7 12.c4 Nf4 13.c5 Qc7 14.Nc3 ab4 15.ab4 Ra1 16.Ba1 Nc6 17.Qe4 Nb4 18.Qb4 ½–½. Van Esbroeck – Hasler, email 4AMM–03 1997.

5.Qb3 d6 6.d4 cb4 (better 6...ab4!? 7.Nd2 Nc6 8.dc5 dc5 9.cb4 cb4=) 7.Nf3+= Nf6 (7...Be6 8.d5 Bd7 9.Nbd2+=) 8.ab4 Be6 (8...Bd7 9.Nbd2 a4 10.Qc2+=) 9.Qc2= Nc6 (9...g6 10.Nbd2+=) 10.Nbd2 (10.e3 g6+=) 10...Rc8 (10...g6 11.e3+=) 11.ba5 Nd4?? (better 11...Na5 12.e3 g6+=) 12.Qa4+- (12.ab6?? Nc2 13.Kd1 Na1 14.Ba1 Ng4-+; 12.Nd4?! Qd4 13.e4 Qc5=; 12.cd4?! Rc2 13.ab6 Rb2=) 12...Qc6 13.cd4 1–0. Janek – Sanji, internet free game, 2017.

5.Qb3 d6 6.d4 Be6 7.d5 Bd7 8.Nf3 Na6 (8...Nf6 9.Nbd2=) 9.Nbd2+= ab4 10.e4 Bb5 (10...e5!?+=) 11.Bb5+- Qb5 12.ab4 cb4 13.Nd4 Qb6 (13...Qd7 14.Nc4 Rd8 15.cb4+-) 14.Nc4 Qc7 15.cb4 (15.Nb5 Qd7 16.Qa4 Rb8+-) 15...Nf6? (better 15...Rb8+-) 16.Nb5 Qd8 17.Bf6 gf6 (17...ef6 18.Qa4 Ke7 19.Nbd6+-) 18.Qa4 e6 (18...Bg7 19.Nc7 Kf8 20.Na8 f5+-) 19.Nbd6 Ke7 20.Nb7 Qd7 21.d6 Ke8 22.Nb6 (22.Nb6 Qa4 23.Ra4+-) 1–0. Adlai – Gestpa, internet, 2021.

5.Qb3 d6 6.e3 Be6 7.Qa4 Nc6 8.b5 Ne5 9.d4 Nd7 10.c4 Ngf6 11.d5 (11.Bd3 d5+=) 11...Bf5= 12.Nc3 Qc7 13.Nf3 Nb6 14.Qb3 (14.Qd1 e5+=) 14...a4= 15.Qd1 e6 (15...e5 16.Be2=) 16.Be2 (16.Nh4!?+/-) 16...ed5+= 17.cd5 Be7 18.0-0 0-0 19.Nh4 Bd7 20.e4 (20.Rc1 Nfd5 21.Nd5 Nd5 22.Qd5 Bh4=) 20...Nfd5 (20...Ne4!? 21.Ne4 Bh4=+) 21.Nd5= Nd5 22.Qd5 Bh4 23.e5 Be6 (23...de5!? 24.Be5 Qc8=) 24.ed6+= Bd5 (24...Qb6 25.Qe4 Qd6 26.Qh4+/-) 25.dc7+/- b6 26.Rad1 Be6 (26...Bb3 27.Rd2 Ra7 28.Be5+/-) 27.Bf3 (27.Rd6 Ra7+/-) 27...Rac8 (27...Ra7 28.Be5 Rc8 29.Rfe1+/-) 28.Be5+/- Bc4 (28...Bb3 29.Bb7 Bf6 30.Bc8 Be5 31.Rd7+-) 29.Bb7 (29.Rfe1 Bb3+-) 29...Bf1 (better 29...Bf6!? 30.Bd6 Bf1 31.Kf1 h5+-) 30.Kf1+- (worse 30.Rf1 Bf6 31.Bd6 Rfe8 32.Bc8 Rc8+/-; 30.Bc8?! Be2 31.Re1 Rc8 32.Re2 f5+=) 30...Rfe8 31.Bc8 (31.Rd7 Rcd8 32.cd8R Rd8 33.Rd8 Bd8+-) 31...Rc8 32.g3 (32.Rd5 c4+-) 32...Be7+/- 33.Bd6 Kf8?? (better 33...Bf6+/-) 34.Bf4 (better 34.Bc5 Bc5 35.Rd8 Ke7 36.Rc8+-) 34...g5= 35.Bd6 (35.Be5 h5=) 35...c4=+ 36.f4 (36.Bc5 Rc7 (36...bc5?? 37.b6 Kg7 38.Rd7+-) 37.Rd8 Kg7 38.Be7 Re7=) 36...c3 37.Be7 Ke7 38.Rc1 0-1. benachamohcine (2085) - anulov (2090), Rated Blitz game, lichess.org, 2014.

5.Qb3 Nf6 6.e4 =.

5.Qc2 ab4 6.cb4 Na6 7.Nc3 (7.bc5 Nc5 8.Nf3 Nb3+=) 7...cb4 8.Nd5 Qc6 9.Qc6 bc6 (< 9...dc6 10.Nb6 Rb8 11.Be5+- (< 11.Nc8 ba3 12.Ba3 Rc8=+)) 10.Nb4 Nb4 11.ab4 Ra1 (11...Rb8 12.Bc3=) 12.Ba1 Ba6 (12...f6 13.e3=) 13.Nf3 (13.e4 Bf1 14.Kf1 Nf6=) 13...Nf6=+ 14.e3 Bf1 15.Rf1 e6 (15...Nd5 16.Ke2=+) 16.Bc3 (16.Ke2 Bb4 17.Rb1 c5=+) 16...Nd5 17.Ke2 f6 (17...Bb4 18.Rb1 Bd6 19.e4 Nc3 20.dc3=+) 18.Rb1 Nc7 (18...Kf7 19.b5 cb5 20.Rb5=) 19.Ra1 Bd6 20.Ra7 (20.e4 Ke7=) 20...Ke7 21.Rb7 (21.Nd4 Rb8= (< 21...Bh2 22.g3 Kd6 23.Ra1+/–)) 21...Ra8=+ 22.Nd4 White plans b5 Kd8 23.b5 c5 The passed pawn on b5 will quickly become a dangerous weapon 24.Nb3 Nd5 With the idea Kc8 25.b6 Kc8 26.Ra7=+ Nb6 27.Ra8 Na8 28.d4 cd4 29.Nd4 Be5 30.f4 Bd4 31.Bd4 Nc7 32.g4 Kd8 33.Bb6 d5-/+ 34.h4 Kd7 35.Kd3 Nb5 36.Bc5 Nd6 37.Bb4 Ne4 38.Be1 Ke7 39.Kd4-/+ Kf7 40.f5 ef5 41.gf5 Nd6 42.Kd5 Nf5 43.Ke4 Kg6 44.Kf4 Nh6 45.e4 Kh5 46.Kg3 Nf7 47.Bb4 Nd8 48.Bf8 Ne6 49.Be7 Kg6 50.Kg4 h5 51.Kg3 Kf7 52.Bb4 Nf8 53.Bd2 Ng6 54.Be1 Ke6 55.Kf3 Kd6 56.Bg3 Kc5 57.Ke3 Kc4 58.Be1 Ne5 59.Bg3 Kc3 60.Kf4 g6 61.Ke3 Ng4 62.Kf4 Kd2 63.Kf3 Ne5 64.Kf4 Ke2 65.Bh2 Kf2 66.Bg3 Kg2 67.Bf2 Nd3 (68.Ke3 Nf2-+; 67...Kf2?!=) 0–1. Kralovec,Erik (2275) – Schwab,Rene (2245), AUT–chT2O, 1992.

5.Qc2 ab4 6.cb4 e6 7.Nf3 Nc6 8.bc5 Bc5? (better 8...Qa5 9.Nd4 Nf6+-) 9.Bg7+- Bf2 10.Kd1 Bd4 11.Nd4 (11.Bh8?! Bh8 12.Ra2 h6+-) 11...Nd4 12.Qc3 Nb5 (12...e5 13.Bh8 d6 14.a4+-) 13.Qb4 Ne7 14.Bh8 Nd5 15.Qg4 d6 (15...Ne7 16.Qh4 Na3 17.Qh7 Qb3 18.Kc1+-) 16.Qg8 Ke7 17.e4 (better 17.Bg7!? Nd4 18.Qf8 Kd7 19.Qf7 Kc6 20.Bd4 Qd4+-) 17...Nf4 (17...Nd4 18.Qg5 Ke8 19.ed5 Qb3 20.Ke1 Nc2 21.Kf2 Na1 22.de6 Qe6 23.Bb5 Bd7 24.Ba1 Bb5+-) 18.Qg5 (18.Qg5 Kd7 19.Bb5 Kc7 20.Qf4 Qb5 21.Qf7 Bd7 22.Qh7+-) 1–0. Pereira – Leizes, internet, 2020.

5.Qc2 cb4 6.ab4 Nc6 7.e3 (7.e4 Nf6+=) 7...e6 (7...d5 8.Nf3=) 8.b5 Nb8 (8...Nce7 9.c4+=) 9.c4 Nf6 (9...d6 10.Nf3+=) 10.Nf3 Be7 11.d4 d6 (11...d5 12.c5 Qc7 13.Bc3+/–) 12.Bd3 0-0 13.0-0 Nbd7 (13...Qc7 14.e4+/–) 14.Nbd2 (14.e4 h6+/–) 14...Qc7+= 15.e4 g6 (15...h6 16.Rfc1+/–) 16.e5 (16.Ba3 Re8+/–) 16...de5+= 17.Ne5 Ne5 18.de5 Nd7 19.h4 Ne5-/+ 20.h5 Bf6 21.hg6 hg6 22.Ne4 Bg7 23.f4 Ng4 24.Bg7= Kg7 25.Qc3 e5=+ 26.Be2 f6 27.Rae1 Bf5 28.Bg4 Bg4 29.c5 a4 30.Nd6 b6 31.fe5+/– Qc5 32.Qc5 bc5 33.e6?? c4?? 34.e7+/– Rfe8 35.Ne8 Re8 36.Rf4 Bd7 37.b6 c3 38.b7 Kf7 39.Rc4+- c2 40.Rc2 g5 41.Rc7 Be6 42.Rc8! Bc8 Theme: Interference 43.b8Q Be6 44.Qb4 Bf5 45.Qd6 Bg4 46.Rf1 f5 47.Qe5 Re7 48.Rf5 Bf5 (49.Qf5 Ke8 50.Qg5 Kf7+-). Rajaz – Rdeniro, ICC, 2002.

5.Qc2 c4 6.d3 =.

5.Qc2 Nc6 6.bc5 Qc5 7.Nf3 e5 8.c4+= Nf6 (8...b5 9.Ne5 Ne5 10.Qe4+=) 9.e3 d6 10.Nc3 Be6 (10...Be7 11.Na4 Qa7 12.Bd3+=) 11.Ng5+- Be7 (11...Bd7 12.Nge4 Ne4 13.Ne4+-) 12.Be2 0-0 (12...Bd7 13.0-0 g6 14.Nce4 Ne4 15.Ne4+-) 13.0-0 Rac8 (13...Bc4? 14.Na4 Be2 15.Nc5 dc5 16.d4 Bf1 17.de5+- (17.Rf1?! ed4 18.Qc4 Rac8=)) 14.Rab1 Na7 (14...h6 15.Ne6 fe6 16.Qb3+-) 15.f4+- ef4?? (better 15...g6 16.Ne6 fe6+-) 16.Nd5 Bd5 17.Bf6 g6 18.Be7 Rfe8 19.Bf6 fe3 20.d3 b5 (20...h6 21.Qb2 Bg2 22.Kg2 hg5 23.Bh8+-) 21.Rf4 bc4 (21...h5 22.Qb2 bc4 23.dc4 Bg2 24.Kg2+-) 22.Rh4 cd3 (22...h5 23.d4 Be4 24.Ne4 Qf5+-) 23.Rh7 (23.Rh7 Qc2 24.Rh8) 1–0. ggo7801g – tesgf (1710), internet online chess game, 2018.

5.Qc2 d5 =.

5.d4 ab4 6.dc5 Qf6 7.ab4 Ra1 8.Ba1 +/–.

5.e3 cb4 6.Qb3 (6.ab4 Nc6=) 6...Nc6 7.cb4 ab4 8.Bc4 (8.Nf3 e6=) 8...e6=+ 9.Nf3 (9.Bd3 Nf6=+) 9...Na5 10.Qd3 (10.Qa4 ba3 11.Ba3 Nf6=+) 10...Nc4-/+ 11.Qc4 d5 (11...ba3 12.Ba3 Qc6 13.Qb3-/+) 12.Qb3=+ Bd6?? (12...f6 13.0-0=+) 13.0-0 Bd7?? 14.Nc3?? Qc7 15.ab4 Ra1+= 16.Ra1 Ne7 17.Ne2 Bc6 18.Ra8+/– (18.Ra8 Nc8 19.b5+/–) 1–0. mic (2185) – pcmartinscapi (2225), net–chess.com, 2008.

5.e3 d5 6.Nf3 =.

5.e4 ab4 6.ab4 Ra1 7.Ba1 cb4 =.

5.e4 Nf6 6.e5 Nd5 =.

5.Nf3 ab4 6.cb4 cb4 (6...d5 7.Qc2 e6 8.d4=) 7.Bd4 (7.Qb3 Nf6=) 7...Qd8 (7...Qd6 8.Be5 Qb6 9.Qb3=) 8.e3 (8.ab4 Ra1 9.Ba1 Nf6=) 8...Nc6 (8...ba3 9.Qb3 e6 10.Ra3 Ra3 11.Na3=+) 9.ab4= Ra1 10.Ba1 Nb4 11.Qb3 Nc6 12.Be2 (12.Bb5 Na7=) 12...e6 13.0-0 Nf6 14.Re1 (14.Rc1 Be7=) 14...Be7 (14...d5 15.Ne5=+) 15.Nc3 (15.Rc1 0-0=+) 15...0-0 16.Nb5 ½–½. Bohus,Aladar – Harasta,Vladimir, Rimavska Sobota, 1975.

6.cb4 e6 7.Bc3 cb4 8.ab4 Ra1 9.Ba1 d5 =.

6.cb4 e6 7.e3 cb4 8.ab4 Ra1 9.Ba1 Qb4 10.Qc2 Nc6 11.Nf3 Nf6 12.Bc3 Qb6 13.Ne5 Ne5 (13...Be7 14.Nc6 Qc6 15.Qb2-/+) 14.Be5=+ Qc6 15.Qb2 (15.Nc3 b5 16.Qb2 b4=+) 15...Be7 16.Bb5? (better 16.f3=+) 16...Qg2-+ 17.Rf1 0-0 18.Ke2 (18.f3 d6 19.Bg3 Nh5-+) 18...d6 19.Bg3 Ne4 20.Bd3 Ng3 21.hg3 Bf6 (21...d5 22.Rc1 Bd6 23.Ke1-+) 22.Qb4 Qc6 23.Be4 d5?? (23...Qd7 24.d4-+) 24.Bd3?? (better 24.Bh7 Kh7 25.Qf8+=) 24...Bd7?? (24...Rd8 25.Nc3-+) 25.Rh1? (better 25.Bh7 Kh7 26.Qf8 Qc4 27.d3 Qc2 28.Nd2-/+) 25...h6 26.Qg4 (26.Nc3 Rb8-+) 26...e5 27.Bf5 Bf5 28.Qf5 d4 29.e4 Qb5 (29...Qc4 30.d3 Qc2 31.Nd2-+) 30.d3 Qb2 (30...Ra8!? 31.Nd2-+) 31.Nd2 Qb6 32.f4 Qe6 33.Qh5 (33.Qe6 fe6 34.Nf3 ef4 35.gf4 Ra8-/+) 33...Rc8 34.f5? (34.Rb1 ef4 35.gf4-+) 34...Qa2 35.Qg4 (35.Rd1-+) 35...Bg5 36.Rd1 Rc2 37.f6 Rd2 38.Rd2 Qd2 39.Kf3 (39.Kf1 Qd3 40.Qe2 Qg3 41.Qf2 Qh3 42.Qg2-+) 39...Qd3 (39...Qd1 40.Kg2 Qg4 41.Kf2 Be3 42.Kg2 Qe2 43.Kh3 Qf1 44.Kh4 g5 45.Kg4 h5 46.Kh5 Qh3) 40.Kg2-+ gf6 41.Qc8 Kg7 42.Qb7 Qe2 43.Kh3 (43.Kg1 Be3 44.Kh1 Qf1 45.Kh2 Bg1 46.Kh1 Bf2 47.Kh2 Qg1 48.Kh3 Qg3) 43...d3 (43...Qf1 44.Kh2 Be3 45.Qb1 Qb1 46.Kg2 Qg1 47.Kf3 Qf1 48.Kg4 h5 49.Kh5 Qh3) 44.Qd7 d2 (44...d2 45.Qb5 Qb5 46.Kg2 Qe2 47.Kh3 d1Q 48.g4 Qdd3) 0-1. yasminoah (2005) - kurzeme (2000), Rated Blitz game, lichess.org, 2014.

6.cb4 e6 7.e3 cb4 8.Bd4 Qc6 9.ab4 Qc1 (9...Ra1 10.Ba1 Qc1 11.Qd1 Qd1 12.Kd1=) 10.Qd1 Ra1?? (better 10...Qd1 11.Kd1 Ra1 12.Ba1 Na6=) 11.Qc1+- (11.Ba1 Qd1 12.Kd1 d5=) 11...Rb1 12.Qb1 1–0. stampyshortlegs – scottie67, ChessWorld.net, 2016.

6.cb4 Nf6 =.

7.Ba1 cb4 8.Qb4 Qb4 9.cb4 Nc6 10.Bc3 d5 11.b5 d4 12.bc6 dc3 13.cb7 cd2 14.Nd2 Bb7 +=. Sokolski.

7.Ba1 cb4 8.Qb4 Qb4 9.cb4 Nc6 (9...d5 10.Nf3=) 10.Bc3 (10.b5 Nb4 11.Bc3 e6=) 10...d5 11.b5 d4 (11...Na7 12.b6 Nc6 13.e3=) 12.bc6 (12.Bb2 Na7=) 12...dc3 13.cb7 (13.Nc3 bc6 14.Nf3 e6=) 13...cd2 14.Nd2 Bb7 15.e3 ½–½. Yarmolyuk,Yury – Tyutyunnik,Roman, internet, 2007.

7.Ba1 cb4 8.cb4 Na6 =.

7.Ba1 Nc6 8.b5 Na5 9.Qa4 d5 10.Nf3 Bd7 11.e3 (11.c4 Nc4 (worse 11...dc4 12.Bc3+/-) 12.Qa8 Qd8 13.Qb7 e6=) 11...Nf6 (11...c4 12.Na3=+) 12.Be2 (12.c4 Bf5 13.d3 dc4+/-) 12...e6 (12...c4 13.Na3=+) 13.0-0 (13.c4!?=) 13...c4=+ 14.Na3 Bd6 15.Nd4 (15.d3!? 0-0 16.dc4 Ba3 17.Qa3 Nc4 18.Bc4 dc4 19.Rb1=+) 15...0-0-/+ 16.h3 (16.Bb2!?-/+) 16...Ra8 17.Qc2?? (better 17.Bb2-+) 17...e5 (17...Ba3 18.f4-+) 18.Nf5 (18.Bb2 ed4 19.cd4 Rc8-+) 18...Bf8 (better 18...Ba3 19.Rb1 Bc5-+) 19.Bb2 e4 (better 19...Nb3 20.Nc4 dc4 21.Bc4 Nd2 22.Nh6 gh6 23.Qd2 Bb5 24.Bb5 Qb5-+) 20.Nd4-/+ Bc5 21.Rb1 Bd4 22.cd4 Nb3 (22...Bb5?! 23.Bc3 Nb3 24.Rb3 cb3 25.Qb3 Ra3 26.Qa3=+) 23.Rd1 (23.d3 ed3 24.Bd3 Bb5-/+ (24...cd3?! 25.Qb3 Bf5 26.Ra1=)) 23...Bb5-+ 24.Nb1 Bd7 25.Nc3 Bh3?? (better 25...Qe6-+) 26.gh3+= Qe6 27.Kh2 Qd6 28.Kg2 h5 (28...Ra5!?=) 29.Rg1+= h4 30.Kh1 (30.Qd1 Qc6+=) 30...Qe6 (30...b5 31.d3 (31.Nb5? Qd7 32.Kg2 Qb5-+) 31...ed3 A) 32.Nb5 Qd7 (32...dc2?! 33.Nd6 Ra2 34.Bc1-+) 33.Bg4 Ng4 34.hg4 dc2-+; B) 32.Bd3=) 31.Bf1 Kf8 (31...Ra5 32.Ne2+=) 32.Qd1 (32.Kh2 Qb6+=) 32...Ra6 (32...Qf5 33.Qe1=) 33.Qe2 (33.Kg2 Qc6+=) 33...Qf5 (33...Ra5 34.Rg5=) 34.Nd1 (34.Bg2 Ra5+=) 34...b5= 35.f4 (35.Qe1 b4=) 35...ef3=+ 36.Qf2 (36.Qh2 Rc6 37.Ba3 Kg8-/+) 36...b4 37.Qh4 (37.d3 c3 38.Bc3 bc3 39.Nc3-+) 37...c3?? (better 37...Nd2 38.Qg3 Ne8-+) 38.Qh8?? (better 38.dc3 Rb6 39.cb4+-) 38...Ke7+= 39.dc3 Nd2?? (better 39...f2 40.Rg2 Ra8=) 40.cb4 (better 40.Ba6 f2 41.Nf2 Qf2 42.Qg7 (42.Rg7?! Nf3 43.Qb8 Qe1 44.Kg2 Nh4 45.Kh2 Nf3 46.Kg2 Nh4 47.Kh2 Nf3 48.Kg2=; 42.cb4?? Nf3 43.Qf8 Kf8 44.Rg2 Qe1 45.Bf1 Qf1 46.Rg1 Qg1) 42...Qe3 43.Qg3 Qg3 44.Rg3+-) 40...f2?? (better 40...Nf1 41.Nf2 Ne4 (41...Ne3?! 42.Qb8-+) 42.Rf1 Rh6 43.Qh6 gh6-+) 41.Qg7?? (better 41.Nf2 Ra2 42.Qb8 Rb2 43.Qc7 Nd7 44.Qg3=+) 41...fg1Q (worse 41...fg1R 42.Qg1 Nf1 43.Qg2-+; 41...fg1N 42.Ba6 Qh3 43.Kg1 Nf3 44.Kf2 Ne4 45.Ke2 Qh2 46.Kf3 Nd2 47.Kg4 Qg2 48.Kf4 Qf3 49.Kg5 Ne4 50.Kh4 Qh1 51.Kg4 Qg2 52.Kf5 Qg7 53.Kf4 Qg3 54.Kf5 Qg5) 42.Kg1 (42.Qg1 Nf1 43.Qg2-+) 42…Nf3 (42...Nf3 43.Kg2 Nh5-+; 42...Qf1 43.Kh2 Nf3 44.Kg3 Nh5 45.Kg4 Qg2 46.Kf5 Ng7 47.Kf4 Rf6) 0-1. amirkhafan (2185) - arina1999 (2020), Rated Bullet game, lichess.org, 2014.

7.Ba1 Nf6 8.e4 =.

7.ab4 Ra1 8.Ba1 Na6 9.Bc3 (9.b5 Nc5 10.Qc4 d5 11.Qd5 Qb5=) 9...e6 Increasing the pressure on the isolated pawn on b4 10.b5 Nc5 11.Qc2 (11.Qb2!? Na4 12.Bd4=) 11...Qb5=+ 12.d4 Qb3 13.Qc1 (13.Qb3 Nb3 14.Kd1 b6-/+) 13...Na4 (13...Ne4 14.Nf3-/+) 14.Ba1 (14.Ba5 Bb4 15.Bb4 Qb4 16.Nd2 Qc3 17.Qc3 Nc3-/+) 14...Bb4 15.Nd2 Ne7 16.Ngf3 0-0 17.e3 d5 18.Be2 Bd7 19.0-0 Qa2 (19...Bd2 20.Qc7 Bc6 21.Nd2-/+) 20.Qc7 (20.Qb1!? Qa3 21.Bd3=+) 20...Bc6-/+ (20...Bd2?! 21.Qd7 Ba5 22.Bd1 Qa1 23.Ba4=) 21.Rd1 Nf5 22.Qf4 Bc3 (better 22...Nb6 23.Bf1 Nd7-+) 23.g4? (23.Bc3 Nc3 24.Re1 Ne2 25.Re2 Rc8-/+) 23...Nh6 (better 23...Nd4!? 24.ed4 Ba1-+) 24.Bc3-/+ Nc3 25.Re1 b5 (25...Qc2!?-/+) 26.Bd3=+ b4 27.Ng5?? (27.g5 Nf5=+) 27...g6 (better 27...Qd2 28.Bh7 Kh8-+) 28.Ndf3 (28.Ngf3 Kg7=) 28...b3 (better 28...Qa4=+) 29.Ne6?? (better 29.Nh3 Kg7 30.g5+=) 29...fe6-+ 30.Qh6 Rf3 31.Bg6 (31.Rf1 b2 32.Kg2-+) 31…Qf2 (31...Qf2 32.Kh1 Qe1 33.Kg2 Qf1) 0-1. onxisback (2040) - 1999slaba14 (2090), Rated Blitz game, lichess.org, 2014.

7.ab4 Nc6?? 8.Ra8+- Kd8 9.b5 Nd4 (9...e6+-) 10.Bd4 Qd4 11.Qc2 (11.Qc2 e5 12.Qc8 Ke7 13.Nf3+-) 1–0. gho8811h – nno009h, private online chess game, 2018.

7.ab4 e6?? 8.Ra8 Qc7 9.Nc3 +-.

7.e3 Nc6 8.Nc3 e6 9.Na4 Qa5 (9...Qd8 10.ab4 (10.Nf3 ba3 11.Ba3 Ba3 12.Ra3 d6 13.Bb5 Nge7 14.d4 Qa5 15.Ke2=+ –0.56) 10...Nb4 11.Nf3 Nf6 12.Bb5 b6 13.Bc3 Nbd5 14.Bd4 Bd6 15.0-0= –0.22) 10.ab4 Qb4 (10...Bb4 11.Bg7 b5 12.Nb6 (12.Bh8?! Bd2 13.Kd1 ba4+- 14.Qc2 Bb4 15.Nf3+- 0.75) 12...Qa1 13.Ba1 Ra1 14.Ke2+- f6 15.Nc8+- 2.06; 10...Nb4?! 11.Nb6 Qa1 12.Ba1 Ra1 13.Ke2+= Rc1 14.Kf3 Nf6 15.Bc4= 0.19) 11.Qb4 Nb4 (11...Bb4?? 12.Bg7 e5 13.Bh8+-) 12.Rc1 Nc6 (12...Nd5 13.e4 Kd8 14.Nc5 Nb4 15.Nb3-/+ –0.78) 13.Nb6 Rb8 14.Nf3 Nf6 15.Bf6 (15.Be5= –0.12) 15...gf6 16.Bb5 Be7 17.Ke2 Bd8 18.Nc4 Ke7 19.Rb1 Na5 20.Na5 Ba5 21.Ra1 b6 22.Rhc1 Bb7 23.Rc7 Bf3 24.Kf3 Rbd8 25.Ra7 Rhg8 26.h4 Kd6 27.d4 f5 28.Rc1 f6 29.Rcc7 Rg7 30.g3 h5 31.Kg2 Rf7 32.Be2 Rh7 33.Rcb7 Kc6 34.Bf3 Kd6 35.e4 fe4 36.Be4 f5 37.Bf3 Ke7 38.Bc6 Kd6 39.Bb5 Rg7 40.Kf3 Rh7 41.d5 (better 41.Kg2!?=) 41...ed5-/+ 42.Kf4 Ke6 43.Bd3 Rf8 44.Bb5 Rff7 45.Rc7 Rhg7 46.Rc2? (46.Kf3-/+) 46...Kd6?? (46...Rg4 47.Kf3 f4 48.Kg2 fg3 49.fg3-+) 47.Rc8?? (better 47.Be2=+) 47...Rg4-+ 48.Kf3 f4 49.Kg2 fg3 50.fg3 Rfg7 (better 50...Be1 51.Rb7 Bg3 52.Kh1-+) 51.Kh2? (51.Kf2 Re4 52.Kf1 Rb4-+) 51...Rg3 (better 51...Be1 52.Kg2 Bg3-+) 52.Rd7 Rd7 53.Rc6 Ke5 54.Kg3 Rg7 55.Kh3 d4 56.Rh6 Kf4 57.Rh5 Bb4 (57...d3 58.Rh8 d2 59.Rf8 Ke3 60.Re8 Kd4 61.Rd8 Kc3 62.h5-+) 58.Bc4 (58.Rd5 Ke4 59.Bc6 Ke3-/+) 58...Rd7 (58...d3!? 59.Rb5 Bc5 60.Rb2-+) 59.Rb5 Bc5 60.Rb3 Re7 61.h5 Re3 (better 61...Kg5!?-+) 62.Re3 Ke3 63.h6 d3 64.Bb3 d2 65.Kh4 Ke2 66.Kg4 Be3 67.Kf5 0–1. Koper,Konrad (1660) – Dabrowska,Paula, Szachowe Lato Poznan Poland, 2010.

7.e3 Nc6 8.Nc3 e6 9.Nb5 A) 9...Nf6 10.Nf3 (10.Bf6 gf6 11.a4 d5 12.Nf3 Bd7 13.Bd3 Be7 14.0-0 Na5 15.Qa2=+ –0.28; 10.Be2 Qd8 11.a4 e5 12.d4 d6 13.d5 Na5 14.Qd3 Nd7 15.Nf3= –0.25) 10...d5 11.Bf6 gf6 12.a4 Bd7 13.Be2 Be7 14.0-0 Na5 15.Qa2= –0.19; B) 9...Qa5 10.Nf3 (10.Qd1 Qd8 11.a4 d5 12.Nf3 Nf6 13.Bf6 gf6 14.d4 Be7 15.Be2=+ –0.37; 10.a4 d5 11.Nf3 Nf6 12.Bf6 gf6 13.d4 e5 14.Qd5 Be6 15.Qe4=+ –0.41) 10...Nf6 11.Be2 ba3 12.Ba3 d6 13.0-0 Qd8 14.Bb2 Ra1 15.Ra1= –0.09; C) 9...d5 10.ab4 (10.a4 Bd7 11.Nf3 Na5 12.Qa2 Rc8 13.Bd4 Qd8 14.Qb2 f6 15.Bd3-/+ –0.78; 10.Nf3 Nf6 11.Bf6 gf6 12.a4 Bd7 13.Bd3 Na5 14.Qb2 Be7 15.Rc1=+ –0.41) 10...Ra1 11.Ba1 Nf6 12.Bc3 Be7 13.Nf3 0-0 14.Be2 Bd7 15.0-0= –0.22.

7.e3 Nc6 8.Nc3 Nf6 9.Nf3 A) 9...Qa5 10.Nb5 (10.Nb1 Qa4 11.Qa4 Ra4 12.Bb5 Ra5 13.a4 b6 14.d3 Na7 15.Kd2=+ –0.66; 10.Nd1 Qa4 11.Qa4 Ra4 12.Bb5 Ra5 13.a4 b6 14.Rc1 Bb7 15.d3=+ –0.56) 10...e6 11.Be2 ba3 12.Ba3 d6 13.0-0 Qd8 14.Bb2 Ra1 15.Ra1= –0.09; B) 9...e6 10.Nb5 d5 11.Be2 Bd7 12.Bf6 gf6 13.a4 Be7 14.0-0 Na5 15.Qa2= –0.19; C) 9...d5 10.a4 (10.Nd5 Nd5 11.Qd5 ba3 12.Ba3 e5 13.Ng5 Ra3 14.Qf7 Kd8 15.Qd5-/+ –0.84; 10.Nb5 e6 11.Bf6 gf6 12.a4 Bd7 13.Bd3 Be7 14.0-0 Na5 15.Qa2=+ –0.28) 10...e6 11.Nb5 Nd7 12.d4 Be7 13.Bd3 0-0 14.0-0 Qa5 15.Rfc1= –0.22.

6.b5 a4=+ 7.Qc2 Qb5 8.e4 Qc6 9.e5 (9.c4 d6=+) 9...d5 10.f4 (10.Nf3 b5-/+) 10...Ne7-/+ 11.Nf3 h5 (11...Ng6 12.g3-/+) 12.Be2 Nf5 (12...Ng6 13.g3-/+) 13.0-0 (13.c4 dc4 14.Qc4 Ra5=+) 13...c4-/+ 14.Nd4 Qb6 15.d3? (better is 15.Kh1 Nd4 16.cd4-/+) 15...Bc5 16.Kh1 cd3 17.Bd3 Ne3 18.Qf2 Nf1 19.Bf1 Nc6 20.Bb5 Bd4 21.Bc6 bc6 22.cd4 Rb8 23.Bc3 Qb3 24.Bb4 Qd1 25.Qg1 Qg1 26.Kg1 Ba6 27.Nc3 Bb5 28.Kf2 f6 29.Bd6-/+ Rb7 30.Rb1 fe5 31.fe5 g5 32.Ke3? Rhh7-+ 33.g3 Rhf7 34.Bc5 Rf5 35.Na4 Rbf7 36.Nc3 Rf2 (36...Rf2 37.Rb5 R7f3#) 0–1. Baer,Cy (1895) – Langschmidt,Dirk (2015), RSS5E–11 remoteschach.de, 2007.

6.e3 ab4 7.cb4 cb4 8.ab4 Ra1 9.Ba1 f6 10.b5 d5 11.Nc3 Na6 12.d4 Qa5 13.Bb2 Nb4 (13...Nc7 14.Nf3=) 14.Be2 (14.Nf3 Bd6+=) 14...Bd6 (14...e5!?+=) 15.Nf3+- Ne7 (15...e5 16.0-0 e4 17.Nd2+-) 16.0-0 0-0 (better 16...e5!?+-) 17.Ra1+- Qb6 (17...Qc7 18.Ra4 Bd7 19.Rb4 Bb4 20.Qb4+-) 18.Na4 Qc7 19.Bc3 Na6 20.ba6 ba6 21.Rb1 (21.Qb6 Qb6 22.Nb6 Kf7+-) 21...h6 (21...a5 22.Qa2+-) 22.Qb6 (22.Bb4 e5+-) 22...Qd7 (22...Qb6 23.Nb6 g5 24.Rb3+-) 23.Nc5 Bc5 24.Qc5 Nf5 25.Rb6 Re8 (25...Bb7 26.Qb4 Bc8 27.Ba6 Ba6 28.Ra6+-) 26.Rc6 (worse 26.Ba6 Ba6 27.Ra6 Rc8+-) 26...Qb7 (26...h5 27.Rc7 (worse 27.Ba6 Ba6 28.Ra6 Rb8+-) 27...Qd8 28.Ba5+-) 27.Rc7 Qb1 28.Bf1 Bb7 (28...Qb8 29.g4 Ne3 30.fe3+-) 29.Nd2 Qd1 (29...Qc1 30.Rb7 Kh7 31.e4+-) 30.Rb7 a5 (30...Qh5 31.Qc6+-) 31.Qc6 Rf8 (31...Qh5 32.Be2! Qg6 33.Bb5+-) 32.Qe6 (32.Qe6 Kh8 33.Qf5+-) 1–0. Pierre – GuestTrepp, internet, 2020.

6.e3 Nf6 7.b5 a4 8.Qc2 d5 9.c4 dc4 10.Bc4 Be7 11.d4 Nbd7 12.Nf3 0-0 13.Nbd2 Qc7 14.e4 b6 15.e5 Nd5 16.h4 (16.Bd3 h6=) 16...f5 17.g4 Bb7 18.Ng5 Bg5 19.hg5 Nf4 20.0-0-0? Bh1-+ 21.Rh1 Qb7?? 22.f3 Nd5?? 23.gf5+= Rf5 24.Bd3 Rg5?? 25.Bh7+- Kf7 ½–½. Sweeney,Matthew – Murrell,Malcolm R (1735), Doeberl Cup Major, 2003.

6.cb4 cb4 7.ab4 Ra1 8.Ba1 Qb4 9.Nf3 Nc6 10.Be2 Nf6 11.0-0 d6 12.d4 Bg4 (12...Bf5 13.Bc3 Qb6 14.Nbd2=+) 13.Bc3= Qb6 14.Nbd2 (14.d5 Nb8 15.Bf6 gf6 16.Nd4=) 14...g6 (14...d5 15.Qa4=) 15.Qc2 (15.d5!? Nb8 16.Qb1 Qb1 17.Rb1+/- (worse 17.Nb1 Bg7=+)) 15...Bg7 (15...Bf5 16.Qa2 Qa7 17.Qb3=) 16.Rb1 Bf5?? (better 16...Qc7=) 17.Qf5 (17.Rb6?! Bc2 18.Rb7 0-0+/-) 17...gf5 18.Rb6 0-0 (18...Nd5 19.Rb3 Nc3 20.Rc3 Kd7+-) 19.Rb7 Ra8 (19...Rc8 20.Bb2+-) 20.h3 (20.Rc7 Na7+-) 20...h5 (20...e6 21.Kf1+-) 21.Bd3 (better 21.Rc7 Na7+-) 21...Ra2 (21...e6 22.Rc7 Nd8 23.Nb1+-) 22.Rb2 (better 22.Rc7 Na7 23.Re7 d5+-) 22...Rb2 23.Bb2 e6 24.Kf1 d5 25.Be2 Ne4 26.Ne4 fe4 27.Nh4 f5 (27...Bf6 28.g3+-) 28.Bh5 Nb4 29.Ke2 (29.Ng6 Nd3 30.Ne7 Kh7+-) 29...Nd3 30.Ba1 f4 (30...Nc1 31.Kf1+-) 31.Ng6 fe3 32.fe3 (worse 32.Ke3 Ne1 33.Ke2 Nc2+-) 32...Kh7 33.Ne5 Be5 34.de5 Kh6 (34...Kg8+-) 35.Bg4 Nc5 (35...Nc1 36.Kf1 Nd3 37.Be6+-) 36.Bd4 Nd3 37.Be6 Kg5 (37...Nb4 38.Bd7 Na6 39.e6+-) 38.Bd5 Kf5 39.g4 Kg6 40.Be4 Kh6 41.Bd3 Kg5 (41...Kg7 42.e6 Kg8 43.Bh7 Kh7 44.e7 Kh6 45.e8Q Kh7 46.Qd7 Kg6 47.Qg7) 42.Kf3 Kh4 43.e4 (43.e6 Kh3 44.e7 Kh2 45.e4 Kh3 46.e8Q Kh4 47.Qh5) 43...Kg5 44.e6 Kg6 45.e7 (45.h4 Kh6 46.e7 Kg6 47.e8Q Kh7 48.Qd7 Kg8 49.Qg7) 45...Kf7 46.Bf6! Ke8 (46...Kf6 47.e8Q Mate attack) 47.Bb5 Kf7 48.e8Q (48.g5 Kg6 49.e8Q Kh7 50.Qf7) 48...Kf6 49.Qh5 (49.e5 Kg7 50.g5 Kh7 51.Bc4 Kg7 52.Qg8) 49...Kg7 (49...Ke6 50.Kf4 Ke7 51.Qf5 Kd6 52.Qe5) 50.Qf5 (50.e5 Kf8 51.Qg6 Ke7 52.Qf6) 50...Kh6 (50...Kh8 51.Qf6 Kg8 52.g5 Kh7 53.Qh6 Kg8 54.Bc4) 51.e5 Kg7 52.e6 Kh6 53.e7 Kg7 54.e8Q (54.e8Q Kh6 55.Qeg6) 1-0. danishguy (2130) - kurzeme (2120), Rated Bullet game, lichess.org, 2020.

6.cb4 cb4 7.Bd4 Qd6 8.Qb3 =.

6.cb4 cb4 7.Bd4 Qe6 8.a4 (8.ab4!? Ra1 9.Ba1+=) 8...Nc6=+ 9.Bb2 Nf6 10.Nf3 h6 11.Qc2 g6 12.Bc4 d5 13.Bb5 Bg7?? (better is 13...Bd7=+) 14.Nd4+/– Qe4? (14...Qg4 15.Nc6 Bd7 16.Ne5 Qg2 17.Rf1 Bb5 18.ab5+/–) 15.Bc6+– bc6? (better is 15...Bd7 16.Qe4 de4+–) 16.Qc6 Nd7 17.Qa8 0-0 18.0-0 Ne5 19.Qb8 Bh3 20.f3 Rb8? 21.fe4 Bd7 22.ed5 Nd3 23.Bc1 b3 24.Ba3 b2 25.Ra2 Ba4 26.Be7 Bd4 27.ed4 Bb5 28.Bd6 Rb7 29.Ra8 Kg7 30.Nc3 Nc1 31.Be5 f6 32.Bf6 Kf7 33.Be5 Ke7 34.d6 Kd7 35.Rf7 Kc6 36.d5 Kb6 37.Bd4 1–0. vallabhan (1610) – guinguin, internet, 2007.

5.Qc2 e5=+ 6.e3 Bd6 7.Nf3 Nf6 8.Be2 0-0 9.0-0 ab4 10.cb4 Qc7 (10...Bg4=+) 11.Nc3 (better is 11.d4 Nbd7 12.de5 Ne5 13.Nbd2=+) 11...e4-+ 12.Nd4 Bh2 13.Kh1 Bg4 (better is 13...Be5-+) 14.g3= Bg3 15.fg3 Qg3 16.Bg4 Ng4 (17.d3 Ne3-+) 0–1. Teodorescu,Margareta (2095) – Duminica,Mariana (2100), Baile Herculane (Women), 1994.

5.Qc2 e5=+ 6.Nf3 Bd6 =+.

5.d4 Nd7 6.e3 e5 7.Bd3 Ngf6 8.Ne2 e4 9.Bc2 Qc7 10.0-0 Nb6 11.Nd2 Ng4 12.Ng3 h5 13.f3 Ne3 14.Qe2 Nc2 15.Rac1 ab4 16.Rc2 ba3 17.fe4 Bg4 18.Qe1 ab2 19.ed5 Be7 20.Rb2 Nd5 21.c4 Nf6 22.Nde4 0-0 23.c5 Qd7 24.Nd6 Bd6 25.cd6 Qd6 26.Rb7 Qd4 27.Kh1 Rfe8 28.Re7 Re7 29.Qe7 h4 30.Ne2 Qd3 31.Re1 Be2 32.Re2 Ra1 33.Re1 Qf1 34.Rf1 Rf1 0–1. wote – jaburr (2245), gameknot.com, 2012.

5.d4 Nd7 6.Nf3 g6 7.e3 Bg7 8.Nbd2 e5 9.de5 Ne5 10.Ne5 Be5 11.Nb3 (11.Nf3 Bg4+=) 11...ab4 (11...Nf6 12.Bd3+= (12.Na5? Ra5 13.f4 Bd6-+)) 12.ab4 Ra1 13.Ba1 Ne7 14.Bd3 0-0 15.0-0 Bb8 (15...Bf5 16.Nd4 Bd3 17.Qd3-/+) 16.Qc2 (16.Bb2 Bd6=) 16...Qc7 (16...Bf5!?+=) 17.g3= b5 18.Qb2 Qe5 19.Qd2 Qh5 20.Be2 (20.Bb2 Nf5+=) 20...Bg4= 21.Bg4 Qg4 22.Nd4 (22.Bb2 Bd6=) 22...Be5+= 23.Nc6? (better is 23.Qa2!?+=) 23...Nc6-+ 24.Qd5 Qe6 25.Qb5 Ra8 26.Bb2? (better is 26.e4-/+) 26...Ra2-+ 27.Rb1 (27.Ba1 Bg7-+) 27...Qf5 (27...Bg7 28.Qe2 Bc3 29.Qc2-+) 28.Qf1 (28.Rf1 Qf6 (28...Rb2?! 29.Qc6 Rb3 30.Rc1-+) 29.Ba1 Bc3 30.Bc3 Qc3-+) 28...Nb4! 29.cb4 Bb2 (29...Rb2?! 30.Rb2 Bb2 31.Qc4-/+) 30.Qd1 (30.b5 Bf6-+) 30...Bc3 (better is 30...Bd4! 31.Qe1 Be3 32.Qe3 Qb1 33.Kg2 Qb4 34.Qf3-+) 31.Qf1 White prepares the advance b5 (31.Qd8 Kg7 32.Rf1 Rb2-+) 31...Bd2 (better is 31...Rf2 32.Qf2 Qb1 33.Kg2 Bb4-+) 32.b5 (32.Rb3 Qe4 33.b5-+) 32...Be3! 33.fe3 Qc2 0–1. Jorgensen,Orla Eilegaard – Andersen,Dani (1960), Borup DEN, Skovbo GM, 2014.

5.d4 Bf5 6.Nd2 e6 7.f3 (7.Ngf3!?=+) 7...Nf6-/+ 8.g4 Bg6 9.h4 Qc7 10.Rh3 (10.Nh3 h6-/+) 10...h5 11.g5 Ng8 (better 11...Ng4 12.e4 Ne3-/+) 12.e4= Ne7 13.Bd3 Nd7 14.c4 Qf4 (14...e5!? 15.Ne2 de4 16.fe4 ed4 17.Nd4 Bh7=) 15.Qe2 0–1. Perovic,Rade (1915) – Draganic,Veljko (2315), Montenegro Premier League, 2016.

5.d4 Bf5 6.e3 e6 7.Bd3 Nf6 8.Nf3 Bd6 9.0-0 (9.Bf5 ef5 10.c4 dc4-/+ (10...ab4? 11.c5 Qc7 12.cd6 Qd6 13.Qb3+-)) 9...Nbd7 (9...0-0 10.Be2=+) 10.Bf5= ef5 11.Nbd2 (11.c4 dc4 (11...ab4? 12.c5 Nc5 13.dc5 Bc5 14.ab4 Ra1 15.Ba1+-) 12.Nbd2 Qb5=) 11...Ne4 (better 11...ab4!? 12.ab4 0-0=+) 12.c4= Nd2 (12...Bc7 13.cd5 cd5 14.Ne4 de4 15.Ne5 Ne5 16.de5 ab4 17.ab4 Ra1 18.Qa1+=) 13.Nd2 Qc7 (13...ab4? 14.c5 Bh2 15.Kh2 Qc7 16.Kg1 ba3 17.Qb3+-) 14.f4 (14.cd5!? cd5 15.Rc1=) 14...0-0=+ 15.c5 Be7 16.Bc3 Rfe8 17.ba5 (17.Qe2 ab4 18.ab4 g6=+) 17...Bf6 18.Nf3 Re3 (18...Nc5 19.Bb4 Ne4 20.Rb1-/+) 19.Qd2=+ Re4 (worse 19...Qf4 20.Ne5 Qe4 21.Rae1 (21.Nd7? Re2 22.Qe2 Qe2-+) 21...Ne5 22.Qe3 (worse 22.Re3 Nc4 23.Re4 Nd2-/+) 22...Qe3 23.Re3=) 20.Ne5 (20.Ng5 Ree8=+) 20...h6 (20...Nf8 21.Rab1-/+) 21.Rae1 (21.Rab1 Ra7=+) 21...Ne5-/+ 22.de5 (22.fe5 Bg5 23.Qd3 Qd7-/+) 22...Be7 23.Re4 (23.Bb4 Rd8-/+) 23...de4-+ 24.Bb4 Rd8 25.Qe2 Qd7 26.Rc1 (26.Qc4 Qc8-/+) 26...Qd4-+ 27.Kf1 Rd5 28.a6 (28.g3 Bc5 29.Bc5 Rc5 30.Rc5 Qc5-+) 28...ba6 29.Qa6? (29.g3-+) 29...Qe3 30.Re1 (30.Rb1 Qf4 31.Kg1 Bc5 32.Bc5 Rc5-+) 30...Qf4 31.Kg1 Bc5 32.Bc5 Rc5 33.Qc8 (33.e6 fe6 34.Qe2 Qd6-+) 33...Kh7 34.e6 (34.Qa6-+) 34...e3 35.Rf1 (35.Qh8 Kh8 36.Rb1 Qf2 37.Kh1 Rc2 38.Rb8 Kh7 39.Rh8 Kh8 40.ef7 Qg2) 35...e2 36.Rf4 (36.Qg8 Kg8 37.ef7 Kf7 38.Rf4 Rc1 39.Kf2 e1Q 40.Kf3 Rc3) 36...Rc1 37.Kf2 e1Q 38.Kf3 Rc3 0-1. Onna Amargant,J (1890) - Sole Gonzalez,Edgar (1970), TCh-CAT GpB Final, 2019.

5.d4 Bf5 6.e3 Nf6 7.Nd2 e6 8.Ngf3 Nbd7 9.Nh4 Bg6 10.Ng6 hg6 11.Nf3 Ne4 12.Bd3 Ndf6 13.0-0 Bd6 14.h3 Qc7 0–1. Sapareva,Magdalena – Yotov,Lyuben (1775), 11th Hristo Gerenski Memorial, 2018.

5.d4 Bf5 6.e3 Nf6 7.Nf3 e6 8.Nbd2 Bd6 9.Be2 0-0 10.0-0 Nbd7 11.Nb3 (11.c4 Bb8=) 11...a4 12.Nc5 Nc5 13.dc5 Bc5 14.bc5? (better is 14.c4 Ne4 15.Be5+=) 14...Qb2-+ 15.Rb1?? (better is 15.Re1-+) 15…Bb1 0–1. Rutkowski,Eugeniusz (1980) – Kowalczyk,Marian (2015), Druzynowe Mistrzostwa Polski Niewidomych Poland, 2008.

5.d4 Bf5 6.Nf3 Nf6 7.e3 e6 8.Ne5 Nbd7 9.Nd2 Ne5 10.de5 Ng4 11.Be2 Ne5 12.0-0 Nd3 13.Bd3 Bd3 14.Re1 Bd6 15.Nf3 Be4 16.Nd4 0-0 17.f3 Bg6 18.f4 Be4 19.Qg4 Rae8 (19...ab4?! 20.Ne6 fe6 21.Qe6 Kh8 22.Qd6 ba3 23.Ba3-/+) 20.Rec1 e5 21.fe5 Be5 22.c4? (22.Rf1-+) 22...c5 (22...ab4?! 23.cd5 f5 24.Qe2 Bd5 25.Rd1-+) 23.cd5 cd4 (23...Bd4?! 24.ed4 cb4 25.ab4 ab4 26.Rc5-/+) 24.Kh1 (24.ed4 Bd4 25.Bd4 Qd4 26.Kh1 Qd5 27.Rc5-+) 24...Qh6 25.h3 (25.h4 de3 26.Be5 Re5 27.Rc8-+) 25...f5 26.Qe2 (26.Qe4 fe4 27.Bd4 Bd4 28.ed4 ab4 29.ab4-+) 26...Qh3 27.Kg1 Qh2 28.Kf1 (28.Kf2 Bg3 29.Kf1 Qh1) 28...Qh1 (28...Bg3 29.Qf2 Bd3 30.Ke1 de3 31.Kd1 Qh1 32.Qe1 Qe1) 29.Kf2-+ Qg2 30.Ke1 Bg3 31.Kd2 de3 32.Ke3 Bf3 (33.Kd4 Qe2 34.Kc3 Qe3 35.Kc2 Be4 36.Kd1 Qd3) 0–1. Wilmy – ddddale, HCL–T104 playchess.de, 2003.

5.e3 ab4 6.cb4 Bf5 7.Nf3 Nd7 8.Nc3 (8.Be2 Ngf6=) 8...Ngf6 (8...e5 9.Na4 Qc7 10.d4=+) 9.d4 e6 10.Bd3 (10.Nh4 Be4=) 10...Bg6 11.0-0 Bd6 12.Bg6 hg6 13.h3 Qc7 14.Qc2 e5 15.de5 Ne5 16.Ne5 Be5 17.Ne2 (17.Rfc1 Bh2 18.Kh1 Qd6=) 17...0-0 (17...g5!? 18.Be5 Qe5=+) 18.Be5= Qe5 19.Nd4 Ne4 20.Rfc1 Nd6 21.a4 Nc4 22.b5 c5 23.Nf3 Qe6 24.e4 Qe4 25.Qe4 de4 26.Rc4 ef3 27.Rc5 fg2 28.Rc7 b6 29.Rb7 Rfb8 30.Rb8 Rb8 31.Rc1 Ra8 32.Rc4 Kf8 33.Kg2 Ke7 34.Kf3 Kd6 35.Rc6 Ke5 36.Rb6 Ra4 37.Rb7 Ke6 38.Kg3 g5 39.f3 g6 40.Rb8 Rb4 41.b6 Kf5 42.b7 (42.Rb7 Kf6=) 42...f6 43.Kf2 Kf4 44.Rf8 Rb2 45.Kg1 (45.Ke1 Rb7 46.Rf6 Ke3=) 45...Rb7=+ 46.Rf6 Kg3 47.Kf1 Kh3 (47...Rg7!?-/+) 48.Rg6= Kg3 49.Rg5 Kf3 ½-½. opperwezen - gnejs (2810), lichess.org, 2016.

5.e3 c5 6.b5 a4 7.c4+= d4 (7...Be6 8.cd5 Bd5 9.d4+=) 8.Nf3 (8.ed4 cd4 9.Nf3 Bg4+/-) 8...Bg4 9.Be2 Nd7 (9...Bf3 10.Bf3 Nf6 11.0-0+=) 10.ed4 (better 10.Nd4!? Be2 11.Ne2+/-) 10...Bf3+= 11.Bf3 (worse 11.gf3 cd4 12.f4 e6=+) 11...cd4 12.0-0 e5 13.d3 Ngf6 14.Nd2 Be7 15.Re1 0-0 16.Rc1 Rfe8 17.Ne4 Ne4 18.Be4 g6 (18...Bg5 19.Qh5 h6 20.Rc2=) 19.Qf3 Nc5 20.Bd5 Qf6 21.Rcd1 Qf3 22.Bf3 Bf6 23.g3 Kg7 24.Kg2 Rad8 25.h4 b6 26.Bd5 Kf8 27.Bc1 Kg7 28.Re2 Re7 29.f3 h6 30.Kf2 g5 31.h5 Rd6 32.g4 Red7 33.Bc6 Rc7 34.Ke1 Rcc6 35.bc6 Rc6 36.Kd2 (36.Kf2 b5 37.cb5 Rb6=) 36...Re6 (36...b5!?=+) 37.Kc2+= Be7 38.Bd2 Nb3 39.Bb4 Bc5 40.Rb1 f6 41.Rb3 ab3 42.Kb3 Re8 43.Ka4 Ra8 44.Kb5 Rc8 (44...Bb4 45.ab4 (45.Kb4?! Ra5=) 45...Ra3 46.Kb6 Rd3 47.c5 Rf3 48.c6+-) 45.Rb2 (45.Bc5 bc5 46.a4 Rb8 47.Kc5 Rc8 48.Kd6 Rd8 49.Kc7 Ra8+-) 45...Kf7 46.a4 (better 46.Ka6!?+/-) 46...Ke6= 47.a5 Bb4 48.Rb4 (better 48.Kb4!? ba5 49.Ka4=) 48...ba5=+ 49.Ka5 Ra8 50.Kb6 Ra3 51.c5? (better 51.Kc5=+) 51...Rd3-+ 52.Rc4? (better 52.Kc7 Rf3 53.Rb6 Kd5 54.c6-/+) 52...Rb3 53.Kc7 Kd5 54.Rc1 Rc3 (54...Rf3 55.Kd7 Rc3 56.Rf1-+) 55.Rd1 (55.Rf1 Rc5 56.Kb6 d3-+) 55...Rc5 (better 55...Rf3!? 56.Kb6-+) 56.Kd7 Rc3 57.Rf1 d3 58.Ke7 d2 (58...d2 59.Rd1 Rd3-+) 0-1. jhonores (2225) - Gran_panda (2220), Rated Blitz game, lichess.org, 2020.

5.e3 Nd7 6.Nf3 e5 7.Qc2 e4 8.Nd4 Ngf6 9.b5 (9.d3 ed3 10.Bd3 Ne5=+) 9...Bc5 (9...c5 10.Nf5 Ne5 11.Ng3-/+) 10.a4 (10.c4 0-0=+) 10...0-0 11.c4 Ne5 (11...Re8=+) 12.Be2 (12.Nb3 dc4 13.Nc5 Qc5=) 12...Qc7 (better 12...dc4!? 13.Bc4 Nd5-/+) 13.cd5 cd5 14.Nb3 Bb6 15.Qc7 Bc7 16.f4 ef3 17.Bf3?? (17.gf3 Bf5=) 17...Nf3 (better 17...Nd3 18.Ke2 Nb2-+) 18.gf3+= Bh3 (18...Bd8 19.Rg1+=) 19.f4 (19.Bf6 gf6 20.Nc3 Rfd8+-) 19...Ne4 (19...Bd8 20.Rg1=) 20.Rg1+= g6 21.Nc3 (21.d3 Nd6+=) 21...Bd8 (better 21...Nc3 22.Bc3 Rfe8+=) 22.Nd5?? (better 22.Ne4!? de4 23.Nc5+-) 22...Bh4 (better 22...Be6-+) 23.Ke2= Be6 24.Nc3? (better 24.Nb6 Bb3 25.d3=) 24...Nc3-+ 25.Bc3 Bb3 26.Rab1 (26.Rgc1 Rfc8-+) 26...Bc4 (26...Ba4 27.Rb2 Rfc8 28.Ra1-+) 27.Kf3 (27.d3 Be6 28.Rgc1-+) 27...f5 28.Rbc1 (28.Rgc1 Rfd8-+) 28...Bd5 29.Ke2 Rfe8 (29...Rfc8 30.Bd4-+) 30.Ba1 (30.Bd4 Rec8-+) 30...Rad8 (30...Rec8!? 31.Rc8 Rc8 32.Bc3-+) 31.Rc7 Rc8?? (better 31...Re7 32.Rgc1 Kf7-+) 32.Rg7+- Kf8 33.Rh7 Bc4 34.Kf3 (34.d3 Bg8 35.Rh4 (35.Rb7?? Rc2 36.Kd1 Bb3 37.Bg7 Kg8 38.Rg6 Rg2 39.Kc1 Rg6-+) 35...Rc2 36.Kf3 Bd5 37.e4 fe4 38.Ke3 ed3 39.Be5+=) 34...g5?? (34...Bd5 35.Ke2 Bc4 36.d3 Bb5 37.ab5 Rc2 38.Kd1 Rh2+-) 35.fg5+- Bd5 36.Ke2 Bg5?? (36...Re4 37.g6 Ke8 (37...Ra4?? 38.g7 Kg8 39.Rh8 Kf7 40.Rc8+-) 38.Rh8 Kd7+-) 37.Rg5+- (37.Rg5 Bc4 38.d3+-) 1–0. AhmedSultanov (1815) – wilsteinitz (1765), lichess.org, 2019.

5.e3 e6 6.Nf3 Nf6 7.d4 Nbd7 8.Bd3 Qc7 9.0-0 b5 10.Nbd2 a4 11.e4 de4 12.Ne4 Ne4 13.Be4 Nf6 14.Bd3 Bd6 15.Re1 0-0 16.h3 Bd7 17.c4 Rfe8 (17...bc4 18.Bc4 Bc8 19.Ne5+=) 18.Rc1 bc4 19.Bc4 Qb7 (19...Bf4 20.Rc2+=) 20.Ne5+/- Be5 (20...h6!?+/-) 21.de5+- Nd5 22.Qg4 g6 (better 22...Rad8+-) 23.Rcd1?? (23.Bd4 Red8+-) 23...Qb6? (better 23...c5=) 24.Rd3 (24.Bd4 Qc7+-) 24...Qd8 (24...Bc8 25.Bd4 Qc7 26.Rc1+-) 25.Bd4 Qe7 (25...Bc8 26.Rd2+-) 26.Bc5 (26.Red1 Bc8+-) 26...Qd8 27.Rf3 (27.Red1 Bc8+-) 27...Bc8 28.h4 (28.Bd3 Ba6+-) 28...h5 29.Qe4 Rb8 (29...Ba6!?+-) 30.Rg3 Kg7 31.Rd1 Rb7 32.Bd6 (32.Be2!? Kh8+-) 32...Rd7 33.Rdd3 Rd6 34.ed6 Qd6 35.Rdf3 (35.Rg5 Qf4 36.Bd5 Qc1 37.Kh2 cd5 38.Qd4 e5 39.Re5 Qc7+-) 35...Re7 (35...e5 36.Rg5+/-) 36.Bd5 (better 36.Qc2!?+-) 36...ed5+= 37.Qd4 Qe5 38.Qe5 Re5 39.Rc3 Bd7 (39...Re6 40.b5 Bb7 41.Rge3+/-) 40.Rge3 Rf5 41.Re7 Be6? (better 41...d4!? 42.Rc5 Rc5 43.bc5 Be6+/-) 42.Rc6+- Re5?? (42...Kf6 43.Ra7 d4 44.Ra4 Rd5+-) 43.f4 (better 43.Rce6 Rf5+-) 43...Re4 (43...Re1 44.Kf2 Kf6 45.Rf7 Kf7 46.Ke1 Bd7+-) 44.Kf2 (44.Rce6 Rd4+-) 44...d4?? (better 44...Kf6 45.Ra7 Rf4 46.Kg1 Rh4 47.Ra4 Re4+=) 45.Kf3 (better 45.Rce6 Rf4 46.Kg3 Rg4 47.Kh3+-) 45...Re3 (45...Bd5 46.Rd6 Re7 47.Rd5 Re3 48.Kf2 Ra3 49.Rd4=+) 46.Kf2= Ra3?? (better 46...Re4=) 47.Rce6+- Ra2 (47...Rb3 48.Rb7 Rb2 49.Kf3 Rb3 50.Ke2+-) 48.Re2 Ra3 49.Rd2 d3 (49...Rb3 50.Rd4 a3 51.Ra7 Rb2 52.Ke3+-) 50.Re3 (50.Ra7 Kf6+-) 50...Rb3 51.Red3 Rb4 52.Rd4 Rb3 53.Ra4 Rb6 54.Rd7 Rf6 55.Raa7 (better 55.Kg3!? Rf5+-) 55...Rf4 56.Kg3 Rg4 57.Kh3 Rf4 58.g3 Rf3 59.Kg2 Rf5 60.Rd4 Rf6 61.Rf4 Rd6 (61...Rf4 62.gf4 Kf6+-) 62.Rff7 Kg8 63.Kh3 (63.Rg7 Kh8 64.Rge7 Rd8+-) 63...Rd8 (63...Ra6 64.Rg7 Kh8 65.Rh7 Kg8 66.Rag7 Kf8 67.Rc7+-) 64.Rg7 Kh8 65.Rgb7 Kg8 66.Rg7 Kh8 67.Rg6 Rc8 (67...Rd7 68.Ra8 (68.Rd7?!) 68...Kh7 69.Rg5+-) 68.Rg5 Re8 69.Ra6 (69.Rh5 Kg8 70.Rd5 Rf8 71.Rdd7 Re8 72.h5 Rb8 73.h6 Re8 74.Rg7 Kh8 75.Rh7 Kg8 76.Rag7 Kf8 77.Rh8) 69...Re7 70.Rh6 Rh7 71.Rh7 (better 71.Rgh5 Rh6 72.Rh6 Kg7 73.Rc6 Kf7 74.h5 Ke7 75.h6 Kf7 76.Rc7 Kf6 77.h7 Ke5 78.h8Q Ke4 79.Re7 Kd5 80.Qd8 Kc4 81.Rc7 Kb5 82.Qb8 Ka4 83.Ra7) 71...Kh7 72.Rh5 (72.g4 Kh6 73.Rh5 Kg7 74.Rf5 Kg6 75.h5 Kh7 76.g5 Kg8 77.g6 Kg7 78.Kg4 Kh6 79.Rf8 Kg7 80.Rf7 Kh8 81.h6 Kg8 82.Rc7 Kf8 83.h7 Ke8 84.h8Q) 72...Kg6 73.Rg5 Kf6 74.Kg4 Kf7 (74...Ke7 75.h5 Kd7 76.h6 Kc7 77.h7 Kd6 78.h8Q Ke7 79.Qg7 Ke6 80.Qh6 Ke7 81.Rg7 Ke8 82.Qh8) 75.h5 Kf6 76.h6 Kf7 (76...Ke6 77.h7 Ke7 78.h8Q Kd7 79.Qg7 Ke6 80.Qh6 Ke7 81.Rg7 Ke8 82.Qh8) 77.h7 (77.h7 Kf6 78.h8Q Ke7 79.Qg7 Ke6 80.Qh6 Ke7 81.Rg7 Ke8 82.Qh8) 1-0. blitzbullet (2390) - szachus (2250), Hourly Bullet Arena, lichess.org, 2018.

5.Nf3 c5 6.d4 ab4 (better is 6...cd4 7.Qd4 Qd4 8.cd4 ab4 9.ab4 Ra1 10.Ba1 Bf5=+) 7.dc5+/– Qc5?? (better is 7...Qf6 8.ab4 Ra1 9.Ba1 e6+/–) 8.ab4+- (8…Ra1 9.bc5+- (9.Ba1?! Qd6=); 8.cb4?! Qd6+=) 1–0. Bonetti,Shane – Mr_Anonymous, ICC, 2002.

5.Nf3 c5 6.e3 f6 7.b5 (7.d4 e6=) 7...e5 (7...c4 8.a4=) 8.a4 (8.c4=) 8...d4 (better 8...e4 9.Ng1 Be6=+) 9.cd4+- cd4 10.e4 (better 10.ed4!? e4 11.Qc2+-) 10...Bg4 (10...Be6 11.Ne5 fe5 12.Qh5 Ke7 13.Qe5=+) 11.d3 (11.Be2 Be6=) 11...Nd7 12.Nbd2 Bb4 13.Be2 Ne7 14.0-0 Rc8 (better 14...Be6=+) 15.Qb3?? (better 15.Nd4 Be2 16.Ne2+-) 15...Nc5?? (15...Bd2 16.Nd4 Be2 17.Ne2-+) 16.Qc2? (16.Qd1 Qe6=+) 16...Be6 (better 16...Bd2!? 17.Qd2 Nb3-+) 17.Qb1 0-0 18.Rc1 f5 (better 18...Ng6-/+) 19.Ne5? (better 19.Nc4 Bc4 20.Rc4=+) 19...Bd2-+ 20.Rd1 (20.Nc4 Bc4 21.Rc4 Bc3-+) 20...Bf4 (better 20...Nb3 21.Ra2 Bc3-+) 21.Bf3 (21.Bd4 fe4 22.de4 Be5 23.Be5-+) 21...Be5 22.Ba3 Bd6 (22...fe4 23.Be4 Nd5 24.Qb2-+) 23.Bb2 (23.ef5 Nf5 24.Re1 Rfe8-+) 23...Ng6 (23...Qc7!? 24.h3-+) 24.Bd4 fe4 25.Be4 (25.de4 Qc7 26.h3 Bh3-+) 25...Bf5 (better 25...Bh2 26.Kh1 Qd8 27.Kh2 Qd6 28.Kg1 Qd4 29.Rf1 Ne4 30.de4-+) 26.Bf5 Rf5 27.Be3 Rcf8 28.d4 Ne4! 29.d5?? (29.Qe4 Nf4 Combination) 29...Qc7 (better 29...Bh2!? 30.Kh1 Nf2 31.Bf2-+) 30.Rc1?? (30.Qe4 Bh2 31.Kh1-+) 30...Bh2 31.Kh1 Qe5 (31...Ng3 32.fg3 Rh5 33.Qc2 Bg3 34.Kg1 Bh2 35.Kh1 Bg1 36.Kg1 Qh2) 32.g3 (32.Rc4 Ng3! 33.fg3 Bg3 34.Rh4 Bh4 35.Bd4 Qd4 36.d6 Rh5 37.Qa2 Kh8 38.Qg8 Kg8 39.g4 Qa1 40.Kh2 Rf2 41.Kh3 Qc3) 32...Nf2 (32...Ng3 33.Kh2 Rh5 34.Kg2 Nh4 35.Kh3 Nf3 36.Kg2 Rh2) 33.Kh2 Qe3 (33...Ng4 34.Kh3 Rf3 35.Bf4 Nf4 36.Kg4 Qh5) 34.Re1 (34.Re1 Qh6 35.Kg2 Qh3 36.Kg1 Qh1; 34.Qf5 Rf5 35.Rc8 Nf8 36.Rf8 Kf8 37.Kg2 Qf3 38.Kf1 Ne4 39.Kg1 Qg3 40.Kh1 Nf2). alessandrocarvalhaes (1925) – MarcelClouzot (1930), lichess.org, 2020.

5.Nf3 Nd7 6.e3 e6 (6...e5?! 7.c4 ab4 8.Ne5 Ne5 9.Be5) 7.Be2 Ngf6 8.0-0 Bd6.

5.Nf3 Bf5 6.d3 Nd7 (6...e6 7.e3=) 7.Nbd2 (7.Nh4 Bg4 8.h3 Bh5=) 7...Ngf6 8.Nh4 Bg6 (8...Be6 9.e4=) 9.e3 (9.Ng6 hg6 10.e3 e5=) 9...e5 (9...Bh5 10.Be2 Be2 11.Qe2=) 10.Be2 (10.Ng6 hg6 11.Nb3 ab4 12.ab4 Ra1 13.Qa1 Qd8=) 10...Bd6 11.Nb3 (11.0-0 0-0=) 11...a4 (11...ab4 12.Ng6 fg6 13.ab4=) 12.Nd2 c5 (12...Kd8 13.Ng6 hg6 14.c4+=) 13.Ng6 hg6 14.e4 (14.Rb1 Qc6=) 14...Qc7 15.h3 (15.Rb1 0-0=) 15...Nf8 (15...0-0 16.ed5 Nd5 17.Bf3=) 16.d4+= cd4 (16...c4 17.f4 ef4 18.e5 Be5 19.de5 Qe5 20.Rf1=) 17.cd4 ed4 18.Bb5 Ke7 (18...N8d7 19.Bd4 Be5 20.Rc1+-) 19.Bd4 Ne6 (19...de4 20.Ba4 Bf4 21.Rc1+-) 20.Rc1 Qb8 (better 20...Qd8 21.Bf6 gf6 22.ed5 Rh5+-) 21.Bb2?? (better 21.Bf6 gf6 22.ed5+- (worse 22.Ba4 Bf4=+)) 21...Ne4 (21...Be5 22.Bc3=) 22.Ne4+= de4 23.Qg4 (23.Bc4!? Nf4 24.Qd4+=) 23...Be5=+ 24.Qe2 Rh5 25.Bc4 Bb2 26.Qb2 Qe5 27.Qe5 Re5 28.Be6 Ke6 29.Rc7 b5 30.Ke2 Rd8 31.Rhc1 Rd7 (31...Red5 32.R1c6 R8d6 33.Rd6 Rd6 34.Rb7-/+) 32.R1c6=+ Ke7 33.Ke3 Rg5 34.g3 Rgd5 (34...Rf5 35.Rd7 Kd7 36.Rc2 Rf3 37.Ke4 Ra3 38.Rc5=+) 35.Rc3 (35.Ke4!? Rd4 36.Kf3 Rd3 37.Ke4 Ra3 38.Rd7 Kd7 39.Rb6=+) 35...f5-/+ 36.f3 Rd3 (better 36...ef3 37.Kf3 g5-/+) 37.Rd3+= Do you see the mate threat? 37...Rc7 38.fe4 fe4 (38...Rc1 39.Kf3+=) 39.Ke4 Ke6 40.Kf4 Rc4 (40...Rf7 41.Kg5+=) 41.Kg5 Rc1 42.Rf3 (42.Kg6 Rb1 43.Re3 Kd5=) 42...Rb1= 43.Rf8 (43.Kf4 Kd5 44.Rc3 Kd4=) 43...Rb3=+ 44.Rb8 (better 44.Kg4=+) 44...Rf3?? (better 44...Rg3!? 45.Kh4 Ra3 46.Rb5 Rb3-+) 45.Kg4 (45.g4!?+=) 45...Ra3= 46.Rb5 The passed pawn on a4 will quickly become a dangerous weapon 46...Rb3 47.Kh4 (47.Rb6 Kd5 48.Rg6 a3 49.Rg7 Rb4 50.Kf5 Ra4-+) 47...Kf6 (47...g5 48.Rg5 Rb4 49.g4 a3=+) 48.Rb6= Ke5 49.Rg6 Rb4 50.g4 a3 51.Ra6 Rb3 52.Ra4 (52.Ra7 Kd4 53.Rg7 Kc3-/+) 52...Kd5 (52...Rf3 53.Ra7 g5 54.Kg5 Rh3 55.Kg6=) 53.Ra7 Kc5 (53...Kd4 54.Rg7 Kc3 55.Ra7-/+) 54.Rg7 Kb6 (54...Kb4 55.Ra7 Kc3 56.g5=+) 55.Rg8 Ka7 56.Rg5 Rb6 57.Ra5 (57.Rg7!? Rb7 58.Rg5=+) 57...Ra6-/+ 58.Ra3 Ra3 59.g5 Kb6 60.g6 Ra1 (60...Kc6!?=+) ½–½. Mroz,Antoni – Mglosiek,Wladyslaw, corr Poland–Cup, 1986.

5.Nf3 Bf5 6.Nd4 Bg6 7.h4 (7.f4 c5 8.Qa4 Nd7+=) 7...Nf6 8.f3 (8.Nb3!?+=) 8...e5-/+ 9.Nc2 Bd6 10.g4 e4 11.Rg1?? (better is 11.d4 ef3 12.ef3 Bg3 13.Kd2-+) 11...Qg1 12.d4 (12.d3 ed3 13.ed3 Bg3 14.Kd2 Bf4 15.Ne3 Be3 16.Kc2 h5-+) 12...ef3 13.ef3 Bg3 14.Kd2 Bf4 15.Ke1 Qg3 16.Ke2 Qh2 (16...Qh2 17.Bg2 Qg2 18.Ke1 Bg3) 0–1. bob_sapp_the_bea – Fritz 11, 2013.

5.Nf3 Nf6 6.g3 Nbd7+= 7.Qc2 e5 8.Bg2 e4 9.Nd4 Ne5 10.d3 (10.0-0 Nc4+=) 10...ed3 (10...ab4 11.cb4 ed3 12.ed3+=) 11.ed3 Bd6 (11...ab4 12.Qe2 (worse is 12.ab4 Ra1 13.Ba1 Qa6-/+; worse is 12.cb4 Bc5 13.Qc3 0-0-/+) 12...Nfg4 13.cb4+= (worse is 13.ab4 Ra1 14.Ba1 Qa6-/+)) 12.0-0 0-0 13.Nd2 Bd7 (13...Re8 14.Rfe1+=) 14.N2b3 a4 15.Nd2 c5 16.N2f3? (16.bc5 Bc5 17.N2f3 Rfe8+=) 16...Nf3?? (better is 16...cd4 17.Nd4 Rac8-+) 17.Nf3+= Rac8 (17...Bf5 18.Nh4 Be6 19.bc5 Qc5 20.Rfe1=) 18.Qd2 (18.bc5 Qc5 19.c4 b5=) 18...Rfe8+= 19.Rfe1 Qa6 (19...Bf5 20.Re8 Re8 21.c4 dc4 22.dc4=) 20.bc5 (20.c4 Be7=) 20...Bc5+= 21.d4 (21.Ne5 Bf2 22.Qf2 Re5 23.Re5 Ng4+=) 21...Ne4 22.Qd1 (22.Qc2 Bd6+=) 22...Bd6 23.Rc1 (23.Nd2 Nc3 24.Re8 Be8 25.Bc3 Rc3 26.Bd5 Ra3 27.Ra3 Ba3+=) 23…b5 (23...b5 24.Ne5 Be6+=; 23...Qb5 24.Qc2-/+). Grund,Karl – Schuehler,Ernst, corr, 1983.

5.Nf3 Bg4 6.d4 Nd7 7.Nbd2 Ngf6 8.e3 e6 9.Be2 Bd6 10.0-0 0-0 11.Nb3 ab4 12.ab4 Qc7 13.h3 Bf3 14.Bf3 e5 15.Nc5 e4 16.Bg4 (16.Be2 b6 17.Nd7 Qd7=+) 16...Ng4 17.Qg4 Bc5 (17...Nf6 18.Qf5=+) 18.bc5= g6 (18...b5 19.cb6 Nb6 20.Ra8 Ra8 21.Ra1=+) 19.Ra8 (19.c4 f5 20.Qe2 f4=) 19...Ra8= 20.Ra1 Ra1 21.Ba1 f5 22.Qd1 Qa5 23.Qb1 b5 24.cb6 (24.Bb2 Qc7=) 24...Qb6 25.Qb6 Nb6 26.Kf1 Nc4 27.Ke2 Kf7 28.Kd1 Ke6 29.Kc2 g5 30.Bb2 Nb2 (30...h5 31.Kb3-/+) 31.Kb2=+ f4 32.Kc2 h5 (32...f3 33.gf3 ef3 34.Kd3=+) ½–½. Wartig,Wolfgang – Markus,Roland, corr SOK–89–41, 1989.

5.Nf3 Bg4 6.h3 Bh5 7.d4 Nd7 8.Nbd2 Ngf6 9.Qc1 (9.c4 Bf3 10.ef3 e6=) 9...e6 10.e3 Qc7 11.b5 Be7 12.c4 Rc8 13.Be2 0-0 14.0-0 cb5 15.cb5 Qc2 16.Re1 Nb6 17.Qc2 Rc2 18.Bc1 Rfc8 19.Bd3 R2c3 20.Ne5 Nbd7 21.Nd7 Nd7 22.Bf1 Nb6 23.Nf3 a4 24.Ne5 (24.g4 Bg6-/+) 24...f6 25.Nd3 Bg6 26.Nf4 Bf7 27.e4 (better 27.Be2!?-/+) 27...de4-+ 28.Bd2 Ra3 29.Ra3 Ba3 30.Re4 Bc1 31.Ba5? (31.Bc1 Rc1 32.Re3-+) 31...a3 32.Re2 Bf4 (32...Na4 33.Bb4 Bf4 34.Ba3-+) 33.Bb6 e5 34.Bc5 (34.g3 Rc1 35.gf4-+) 34...a2 35.Re1 Bd2 36.Rd1 Bc3 0–1. Neagu,L (2025) – Gavrilescu,David (2440), ch–ROU, 2018.

6.ba5 Ra5 7.e3 g6 (7...e5 8.d4=+) 8.Nf3= Bf5 9.d3 Nbd7 (9...c5 10.Nbd2 c4 11.Rb1=+) 10.Nbd2 Bg7 11.Be2 0-0 12.0-0 Nc5 13.c4 Na4 (13...Rfa8 14.Rfb1 Qa7 15.Nh4=) 14.Bd4 Qd8 15.Rab1 Bc8 (15...b6 16.Rfc1+=) 16.Rb4 (16.c5 Ng4+/-) 16...c5 17.Ra4 cd4 18.Nd4 e5 19.Nb5 (19.N4f3 Ra4 20.Qa4 Bg4+/-) 19...Bd7 (19...dc4 20.Qc4 Be6 21.Qb4 Ra4 22.Qa4+/-) 20.Rb1+/- Ra4 21.Qa4 dc4 22.Nc4 Nd5 23.Qa5 (better 23.Qc2+/-) 23...Qa5= 24.Na5 Ra8 25.Nc4 (25.Nb7!? Bb5 26.Rb5=) 25...Bb5-/+ 26.Rb5 Nc3 27.Rb2 Ne2 28.Re2 b5 29.Nb2 Ra3 30.Kf1 Ra1 31.Re1 Ra2 32.Re2? (32.Rb1!?=+) 32...Bf8 (32...e4 33.d4 Bf8 34.f3-+) 33.f4-/+ ef4 (33...Ba3!? 34.Nd1 Ra1-+) 34.ef4 Ba3 35.Nd1 Ra1 36.Re8 Kg7 37.Ke2 Ra2 38.Kf3 Rd2 39.Nf2 Bc5 40.Re2 Re2 41.Ke2 f5 42.Nd1 Kf6 (42...b4 43.Kd2-/+) 43.Ne3 Ke6 44.Nc2 Kd5 45.h3 b4 46.Na1 Bb6 47.Nb3 h5 48.Kf3 h4 49.Ke2 Bc7 50.Ke3 Bb6 51.Ke2 Bc7 52.Ke3 Bd6 53.Na5 Bc7 (53...Bc5 54.Ke2-/+) 54.Nb3=+ Kc6 (54...Bd8 55.Kd2-/+) 55.Nd4= Kb6 (55...Kd7 56.Nf3 b3 57.Kd2 (57.Nh4?? b2-+) 57...Bf4 58.Kc3=) 56.Nf3 Bd8 57.Ne5 (57.Kd2!?=) 57...g5=+ 58.d4 gf4 59.Kf4 Bc7 60.Kg5 Be5 (better 60...b3 61.Nd3 Kc6 62.Kh4 f4-/+) 61.de5+/- Kc7 62.Kf6 b3 63.e6 b2 64.e7 b1Q 65.e8Q Qf1 66.Qe5 Kc6 67.Qc3 Kd7 68.Qf3 Qa1 (68...Qc4 69.Qb7 Kd6 70.Qe7 Kc6 71.Qe6 Qe6 72.Ke6+-) 69.Kf5+- Ke7 (69...Qd4+-) 70.Qe4 Kf7?? (70...Kf8+-) 71.Qe6 Kg7 72.Qe5 Qe5 73.Ke5 Kg6 74.Kf4 1-0. Moskwinski,M (1905) - Potocki,K (1880), 236th YMCA Winter A, 2021.

6.d3 e5 7.Nd2 Be6 8.Ngf3 Nbd7 9.g3 h6 10.Bg2 Bd6 11.ba5 Qa5 12.0-0 0-0 13.c4 d4 14.e4 de3 15.fe3 Ng4 16.Rfe1 Qb6 17.Nf1 e4 18.N3d2 ed3 19.Qd3 Qb2 20.h3? (better is 20.Qd6!? Qe5 21.Qd4+=) 20...Bg3! 21.Ng3 Nge5 22.Qb1?? (better is 22.Qd4 Qd4 23.ed4 Nc4 24.Re6 Nd2 25.Re7-+) 22...Qd2 23.Ra2 Qd6 24.Rd1 Nf3! 25.Bf3 (25.Kf2 Qe7 26.Bf3-+) 25...Qg3 26.Bg2 Qe3 27.Kh2 Ne5 28.Rg1 (28.Qb7 Qf4 29.Kg1 Qg3-+) 28...Bh3! 29.Qb2 (29.Bh3 Nf3 Double attack) 29...Bg2 (29...Be6 30.Kh1 Bc4 31.Qd2-+) 30.Qg2 (30.Rg2 Ra5 31.c5 Ra4-+) 30...Nf3 31.Kh1 Qg1 32.Qg1 Ng1 33.Kg1 Rfe8 34.Ra1 Re2 35.c5 f5 36.a4 f4 37.a5 g5 38.Kf1 f3 39.Ra4 Rd8 40.Ra1 g4 41.Rc1 g3 42.Rb1 Rdd2 43.Ra1 Rh2 44.Kg1 f2 45.Kf1 g2 0–1. Dejna,Miroslaw – Renkowski,Piotr (1685), VI MFSz Turniej Otwarty Poland, 2009.

6.e3 Bg4 7.Be2 Nbd7 8.Bg4 e6?? 9.Bf3 Bd6 10.Ne2 e5 11.d3 1–0. jupiter (2410) – allensixers (2570), net–chess.com, 2002.

6.e3 Bg4 7.Be2 Nbd7 8.Bg4 Ng4 9.h3 Nge5 10.f4 Nc4 11.Ne2 e6 12.0-0 Be7 13.Nd4 0-0 14.ba5?? Qb2-+ 15.Qb2 Nb2 16.d3 Nd3 17.Nd2 Ra5 18.Rfb1 N7c5 19.N2b3 Nb3 20.Rb3 Nc5 21.Rb6 Bf6 22.Kf2 g6 23.g4 Rfa8 24.g5 Bd4 25.ed4 Ne4 26.Ke3 Ra3 27.Ra3 Ra3 28.Kd3 Rc3 (28...Rc3 29.Ke2 Nd6-+) 0–1. waldi1962 – myszka862 (1810), kurnik, 2012.

6.e3 g6 7.c4 ab4 8.cd5 Bf5 9.Qb3 cd5 10.ab4 Ra1 11.Ba1 Bg7 12.Bd4 Qc7 13.Bb5 Bd7 14.Bd7 Nbd7 15.Ne2 0-0 16.0-0 Qd6 17.Bc5 Nc5 18.bc5 Qc5 19.Qb7 Qd6 20.d4 Rb8 21.Qa7 Ne4 22.Nec3 Nc3 23.Nc3 e6 24.Na4 Bf8 25.g3 Rb4 ½–½. Bothe,Michael – Gutzmann,Tobias, Kassel op, 1999.

6.e3 g6 7.d4 Bf5 8.Bd3 Bd3 9.Qd3 Bg7 10.Nd2 0-0 11.Ngf3 ab4 12.cb4 Nbd7 13.0-0 Ra4 14.Nb3 Ne4 15.Rfc1 Rfa8 16.Rc2 Qa6 17.Qa6 R4a6 18.Na5 Rb6 19.Rac1 Rb5 20.g3 c5 21.Nb7? (better is 21.dc5 Bb2 22.Rb2 Ndc5 23.Rbc2=) 21...Rb7-+ (21...cb4?! 22.Rc8 Rc8 23.Rc8 Bf8 24.Nd8+=) 22.dc5 Bb2 23.c6 Bc1 24.cb7 Rb8 25.Rc8 Kg7 26.a4?? (26.Rc1 Rb7 27.g4 e5-+) 26...Nd6 (better is 26...Bb2 27.Rc7 Ne5 28.Ne1-+) 27.Rc1 Rb7 (27...Nb7?! 28.Rc7 Nf6 29.b5-/+ (29.Re7? Nd6-+)) 28.b5 Nc4 29.Nd4 Nc5 (better is 29...Ndb6 30.Ra1 Ra7-+) 30.a5-/+ e5 31.a6 Rc7 32.Nf3 f6 33.Ra1 Ra7 34.Ne1 Kf7 35.Nc2 Nd6 36.Rb1 Ke6 37.Na3 f5 38.Rc1 Na6! 39.ba6 Ra6 40.Nb1 Ra1 41.Rf1 Nc4 42.Nc3 Rf1 43.Kf1 d4 44.Ke2?? (better is 44.ed4 ed4 45.Ne2-+) 44…dc3 (44...dc3 45.Kd3 Nd6 46.Kc3 Ne4 47.Kd3 Nf2 48.Ke2 Ng4-+) 0–1. combijack (1770) – daletedoy (1665), gameknot.com, 2012.

8.Nc3 Qd4 9.e4 de4 10.Ne4 Qe4 11.Qe4 Ne4 12.Bh8 +=.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nb6 -/+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc1 -/+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc2? Ne3-+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Qf4 Qf4 21.Ndf4 Nb6 -+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc2? Ne3-+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rae1 Nb6 22.Ne5 Nc4 -+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc2? Ne3-+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Bd4 Nd4 23.Qc3 Ne6 -+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc2? Ne3-+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Bb2 23.Qb2 Nf6 24.Ne5 Rad8 25.Rac1 d4 26.Red1 Nd5 27.Nd5 Rd5 28.Rd4 Re5 29.Rcd1 Nd4 30.Qd4 Rd5 31.Qd5 cd5 32.Rd5 Rd8 33.h3 Rd5 34.h4 Qc2 35.Kg3 Rd3 36.h5 Qe2 37.hg6 Qf3 38.Kh2 Qg3 39.Kh1 Rd1# 0–1. quad – technical3, Caissa's Web Live Game, 2004.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6 16.Ne2 Nc4 17.Qc2 Ne3 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Bb2 23.b5 Nf6 24.Nh5 d4 25.Ng3 Ng3 26.Qa5 Nd7 27.Qb6 Nc5 0–1. quad – technical3, Caissa's Web Live Game, 2004.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6-/+ 16.Ne2 Nc4 17.Qc2? Ne3-+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Nh4!? 23.Kg3 Bb2 24.Qb2 -+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0-0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.Nf3 Nb6 =+.

6.Nd2 ab4 7.ab4 Ra1 8.Qa1 Na6 9.e3 Nc7 10.Bd3 g6 11.Ngf3 Bg7 12.0-0 0-0 13.Ne5 Be6 14.Nb3 Ra8 15.Qb1 Nce8 16.Nc5 Bc8 17.Qd1 Nd6 18.Qe2 Bf5 19.Bf5 Nf5 20.g4 Nd6 21.g5 Nfe4 22.Ne4 Ne4 (22...de4?! 23.f4=) 23.f3 Ng5 24.h4 Be5 25.hg5 Bd6 26.f4 f6 (26...Ra2 27.Ra1 Qa7 28.Qd1-+) 27.gf6 (27.e4!?-/+) 27...ef6-+ 28.Ra1 Ra1 29.Ba1 Qa7 30.Bb2 Qa2 31.Qc2 Kf7 32.Qc1 h5 33.Qa1? (better is 33.Qc2-+) 33...Qa1 34.Ba1 Ke6 35.Kf2 Kf5 36.Kf3 g5 37.fg5 fg5 (37...Kg5?! 38.e4-+) 38.Bb2 g4 39.Kg2 Ke4 (39...Ke4 40.c4 dc4-+) 0–1. Mr.Oldenslo – thenash, ChessWorld.net, 2012.

6.Nd2 Bf5 7.Ndf3 e6 8.Nh4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Nf5+= ef5 12.e3 Bd6 13.Ba6 Qa6-/+ 14.Ne2 0-0 15.0-0 Ra8 16.Bb2 Qa2 17.Qa1 g6 18.Qb1 Ne4 19.Rd1 Qb1 20.Rb1+= Ra2 21.Nc1 Ra4 22.Nd3 Nd2-/+ 23.Ra1 Ra1 24.Ba1+= Nc4 25.Nb2 Nb2 26.Bb2 b6 27.f3 c5 28.bc5+= bc5 29.Ba3 Kf8 30.Kf2 Ke7 31.dc5 Be5 32.Bb4 Kd7 33.g3 Kc6 34.h3 Bb8 35.g4 fg4 36.fg4 Ba7 37.Kf3 Bc5 38.Bc5 Kc5 39.g5 Kd6 40.e4+= Ke6 41.ed5 Kd5 42.Kf4 Ke6 43.h4 f5 44.gf6 Kf6 45.c4 h6 46.Ke4 Ke6 47.c5 g5 48.hg5 hg5 49.c6 Kd6 ½–½. ashoka_theking (1650) – berlinwall (1760), internet, 2007.

6.Nd2 Bf5 7.Ngf3 Nbd7 8.Nh4 Bg4 9.f3 Bh5 10.g4 Bg6 11.g5 Nh5 12.e3 f6 (12...e5!?=) 13.Ng6+= hg6 14.Bd3 f5 15.f4 Ng3 16.Rg1 Ne4 17.Qe2 e6 18.Ne4 fe4 19.Bc2 c5 20.Ba4 cd4 21.ed4 (worse is 21.cd4 ab4 22.Bd7 Kd7-/+) 21...Bd6 22.Qg4 Ke7 23.Qg3 Qc7 24.Rf1 Nb6 25.Bb3 Nc4 26.Bc4 Qc4 27.Rf2 Rh5 28.Rc1 Rah8 29.Rcc2 Rh3 30.Qg2 a4 31.Rce2?? (better is 31.Qf1-/+) 31...Qd3-+ (31...Rh2?! 32.Qh2 Rh2 33.Rh2-+) 32.Rd2 Re3 33.Kd1 Qb1 34.Bc1 Rc3 35.Rc2 Rhc8 36.Rc3 Rc3 (36...Rc3 37.Rc2 Ra3-+) 0–1. Derevianchenko,Ilia (1980) – Skliar,Andrey (2310), UKR–ch sf Alushta, 2008.

6.Nd2 g6 7.Ngf3 Bg7 8.e3 ab4 (8...0-0 9.Bd3=) 9.ab4 Ra1 (9...Na6 10.Be2=) 10.Qa1 0-0 (10...Qc7 11.c4=) 11.Be2 (11.Bd3 Qc7=) 11...Nbd7 (11...Qc7 12.0-0=) 12.0-0 (12.Qa5 Qd8=) 12...Qc7 (12...Re8 13.Qa5=) 13.h3 (13.c4 dc4 14.Nc4 Nd5=) 13...Nb6 (13...b5 14.Bd3=) 14.Qa5 (14.c4 dc4 15.Nc4 Nbd5=) 14...Bf5 15.Qa1 (15.Qa3 Ra8 16.Qb3 Qd6=) 15...Ra8 16.Qc1 (16.Qd1 Qd6=) 16...Na4 (16...Ra2 17.Nh4 Qc8 18.c4=+) 17.Bd1 (17.c4 dc4 18.Bc4 Nb6=) 17...Bd3 (17...Nb2 18.Qb2 Bd3 19.Re1=+) 18.Re1 b5 (18...Qd6 19.Bc2 Be4 20.Ne4 Ne4 21.Be4 de4 22.Nd2=) 19.Bc2= Bc2 20.Qc2 Nb6 (20...e6 21.Bc1=) 21.Ra1 (21.e4 de4 22.Ne4 Nfd5=) 21...Ra1 22.Ba1 Qa7 (22...Qd6 23.Bb2=) 23.Bb2 Qa2 24.Qb3 Qb3 (24...Qa4 25.Qa4 ba4 26.Ne5=+) 25.Nb3= Na4 (25...Nfd7 26.Na5 Nb8 27.Kf1=) 26.Ba1 Nd7 27.Na5 Nb8 28.Nd2 (28.Kf1 h6=) 28...f6 29.f4 (29.h4 e5=+) 29...e5=+ 30.fe5 (30.Kf2 e4=+) 30...fe5 31.Nf3 (31.g4 e4=+) 31...e4-/+ 32.Nd2 Kf7 33.Kf2 Bh6 34.g4 (34.Nb7 Bg5-/+) 34...Bg5 35.Nf1 (35.Ndb3 Ke6-/+) 35...Bd8 (35...h6 36.Ke2-/+) 36.Nb3 (36.Nd2 h6-/+) 36...Nd7 (36...Bh4 37.Ng3-/+) 37.Nc1 (37.Na5 Bh4 38.Ng3 Nb8-/+) 37...Bh4 38.Kg2 (38.Ke2 h6=+) 38...Ndb6 (38...Be1 39.Ne2-/+) 39.Ne2 (better 39.Nd2-/+) 39...Nc4-+ 40.Nc1 Na3 41.Nb3 Nc2 42.Nfd2 Ne3 43.Kg1 Nc2 (43...Ke7 44.Nb1-+) 44.Nb1 Bd8 (44...Bf6 45.Kf1-+) 45.Kf2 (45.Kf1 Bg5-+) 45...Bb6 (45...Bg5 46.Ke2-+) 46.Ke2 h6 (46...Ke6 47.Kd2 Na1 48.Na1-+) 47.Kd2 Na1 48.Na1 Nb2 49.Ke2 (49.Nb3 Ke6-+) 49...Kf6 (49...Nd3 50.h4-+) 50.Nb3 Kg5 (50...Nd3 51.Na5 Ba5 52.ba5=+) 51.Na5 Ba5 (51...Kh4 52.Nc6 Kh3 53.Ne5-+) 52.ba5-/+ Nc4 53.a6 Kh4 54.Nd2 Nb6 (54...Kh3 55.Nc4 Kg4 56.Ne5 Kg3 57.a7+-) 55.Nf1 Kh3 56.Ne3 Kh4 (56...Nc8 57.Kf2-+) 57.a7 (57.Kf2 Nc8-+) 57...Kg5 58.Kf2 Kf4 59.Ke2 h5 60.gh5 gh5 61.Kf2 h4 62.Ng2 Kg5 63.Ne3 Na8 64.Kg2 Kf4 65.Kf2 (65.Nc2-+) 65...h3 66.Nf1 (66.Nc2 Nb6-+) 66...Nc7 67.Ke2 (67.Nh2 e3 68.Ke2 Na8-+) 67...Kg5 (67...Kg4 68.Ke3 Na8 69.Kf2-+) 68.Nh2 (68.Kf2 Kg4-+) 68...Kf5 69.Ke3 (69.Kf2 Kf4-+) 69...Na8 (69...Ke6 70.Ng4 Kd6 71.Kf2-+) 70.Nf1 (better 70.Kf2!?-+) 70...Ke6 71.Kf4 (71.Kf2 Kd6-+) 71...Kd6 72.Kg3 Kc7 73.Kh3 (73.Ne3 Kb7-+) 73...Kb7 74.Kg3 Ka7 75.Kf4 Nb6 76.Nd2 (76.Ke3 Nc4 77.Ke2 Kb6-+) 76...Na4 77.Nb1 Kb6 78.Ke5 (78.Ke3-+) 78...e3 79.Na3 Nc3 80.Nc2 e2 81.Kf4 b4 (81...b4 82.Ke3 b3-+) 0–1. Ruhle,Ernst Albrecht – Schaad,Pierluigi, Pizol op, 1998.

6.e3 Na6 7.Nf3 e6 8.Bd3 ab4 (8...c5 9.0-0=) 9.ab4 Be7 10.0-0 Bd7 11.Ne5 h6 12.Nd2 Bd6 (12...0-0 13.e4+=) 13.Nd7 Kd7 (13...Nd7 14.e4+=) 14.e4+- de4 15.Be4 (15.Ne4 Ne4 16.Be4 Qc7+-) 15...Nd5 (15...Qc7 16.h3+=) 16.c4 Qb4 (16...Nf6 17.b5!+-) 17.cd5 (17.Ba3 Qc3 18.Bd6 Kd6 19.cd5 ed5+-) 17...Qb2 18.de6 fe6 19.Nc4 Qb5 20.Nd6 Kd6 21.Qg4?? (better 21.Rb1 Qg5 22.Rb7+-) 21...g5 (better 21...Qg5!? 22.Qe2 Nc7=) 22.Qg3 Ke7? (better 22...Kd7+-) 23.Rab1+- Qc4 (23...Nb4 24.Qc7 Kf6+-) 24.Rb7 Kf8 (24...Ke8 25.Bg6 Kf8 26.Qf3 Kg8 27.Qf7) 25.Qf3 (25.Qf3 Ke8 26.Qf7 Kd8 27.Qd7) 1–0. mario1970 (1740) – yasur (1615), gameknot.com, 2016.

6.e3 ab4 7.cb4 e6 (7...Bg4 8.Nf3=) 8.Qc2 Be7 9.Bd3 g6 10.Nd2 0-0 11.Ngf3 Ne8 12.0-0 Bd6 (12...Nd7 13.Bc3+=) 13.Rfc1 Nf6 14.Nb3 Nbd7 15.Nc5 Qc7 16.a4 Be7 17.Qc3 Ne8 18.a5 Bf6 (better 18...Nc5!? 19.bc5 f5+=) 19.Nd7+- Bd7 20.b5 Nd6 21.a6 Rfc8 22.Ba3 (better 22.Qb4 ba6 23.b6+-) 22...ba6?? (better 22...b6 23.bc6 Bc6 24.Bd6 Qd6+-) 23.b6!+- Qb6 24.Bd6 Be8 (24...c5 25.Bc5 Qb7 26.Ra5+-) 25.Ra5 (25.Rcb1 Qd8 26.Qc5 a5+-) 25...Bd8 (25...c5 26.Rc5 Rc5 27.dc5 Qd6 28.Qf6+- (28.cd6?! Bc3 29.Rc3 Rd8+-)) 26.Rca1 Bc7 27.Ra6 Ra6 28.Ra6 Qb7 29.Bc7 Qc7 30.Ra5 Bd7 (30...Rb8 31.Qa3+-) 31.Qc5 Qd8 32.Ne5 (32.Ra7 Be8+-) 32...Be8 (32...f6 33.Nd7 Qd7 34.Ra7+-) 33.Ra6 (33.Ra7 Rc7+-) 33...Ra8 (33...Rc7 34.Qb6+-) 34.Nc6 (34.Ra8 Qa8 35.Qe7 c5 36.dc5 Qc8+-) 34...Bc6 35.Rc6 Qe8 (35...Ra1 36.Bf1 Ra8 37.g3+-) 36.g3 Kg7 37.h4 (37.Rc7 Qd8+-) 37...Kg8 (37...Ra7 38.Rc8 Qe7 39.Kg2+-) 38.Kg2 Kg7 39.Ba6 Qd8 40.Bb7 Rb8 41.Rd6 Qe8 (41...Qf8 42.Rd7+-) 42.Qc7 1–0. Buch – Hasler,Ulrich, email 4AMM–03, 1997.

6.e3 Bf5 7.Nf3 Nbd7 8.Be2 e6 9.Nh4 Bg6 10.Ng6 hg6 11.Nd2 Bd6 12.Nf3 Ne4 13.0-0 Qc7 14.g3 g5 15.Rc1 g4 16.Nd2 Ng3 17.hg3 Bg3 18.Bg4 Bh2 19.Kg2 Nf6 20.Bh3 Ke7 21.f4 g5 22.Rh1 g4 23.Rh2 gh3 24.Rh3 Rh3 25.Kh3 Rh8 26.Kg2 Qd8 27.Qf3 Qg8 28.Qg3 Qh7 29.Nf3 Ne4 30.Ng5 Qg6 31.Ne4 Qe4 32.Kf2 Qd3 33.Qg2 Kf8 34.Re1 Rg8 35.Qh1 Qg6 36.Ba1 Qc2 37.Re2 Qg6 38.ba5 Rg7 39.a4 Rh7 40.Qg1 Qe4 41.Bb2 Rh1 42.Ba3 Ke8 43.Qg8 Kd7 44.Qf7 Kc8 45.Qe8 Kc7 46.Bd6 Kd6 47.Qd8# 1–0. Machete99 – guest693, ICC, 2002.

6.f3 Bf5 7.Nd2 h5 8.e3 e6 9.Ne2 Bd6 10.Ng3 Bg6 11.Nb3 ab4 12.cb4 Qc7 13.Kf2 (better 13.f4!?=+) 13...h4-+ 14.Ne2 Bh2 15.Rh2? (better 15.Rc1-+) 15...Qh2 16.Nc5 (16.Ke1 h3! 17.gh3 Bf5-+) 16...b6 Black plans h3 17.Nd3 h3 18.Ndf4 hg2 (18...Bf5 19.Ke1 hg2 20.Ng2-+) 19.Bg2 Qh4 20.Ng3 Nh5 21.Nfh5 Rh5 22.Qh1 Qh1 23.Bh1 Rh8 24.Bg2 Nd7 25.Rc1 Rc8 26.e4 b5 27.ed5 ed5 28.f4 Bd3 (better 28...Nb6-+) 29.Bd5-/+ Bc4 30.Bg2 Nf6 31.Nf5 Kd7 32.Ng7 Rhg8?? (32...Bd5!? 33.Rg1-+) 33.Nf5? (better 33.d5 Rg7 34.Bf6 Rg2 35.Kg2 cd5 36.Rc3=+) 33...Rce8 34.Ne3? (34.Bf3 Ng4 35.Bg4 Rg4 36.Nh6-+) 34...Nd5 (better 34...Re3 35.Bc6 Kc6 36.Rc4 bc4 37.Ke3 Rg2 38.d5 Nd5 39.Kd4 Rb2 40.Kc4 Rf2-+) 35.Nc4-/+ bc4 36.Rc4?? (better 36.Bd5 cd5 37.Rh1-/+) 36...Nf4 (better 36...Rg2 37.Kg2 Ne3 38.Kf2 Nc4-+) 37.Bf3?? (better 37.Bc6 Kd6 38.Be8 Re8 39.Kf3+-) 37...Nd3 38.Kf1 Nb2 (38...Re1) 39.Rc2 Nd3?? (better 39...Re3 40.Bc6 Kd6-+) 40.Bc6 Kd6 41.Be8 Re8 42.Rd2 (better 42.b5-+) 42...Nb2?? (better 42...Re1 43.Kg2 Re3-+) 43.Rb2+- Kd5 44.b5 Kd4 45.b6 Rb8 46.b7?? (better 46.a4 Kd5 47.a5+-) 46...Kc5 47.a4 Kc6 48.a5 (48.a5 Rb7 49.Rf2=) 1–0. beatmeeasy (2020) – MartyMuffins (1990), lichess.org, 2021.

6.c4 Nd7 7.cd5 cd5 8.d4 =.

6.d3 Bd6 7.Nd2 f6 8.e4 Ne7 9.Qh5 Ng6 10.Ngf3 ab4 11.ab4 Ra1 12.Ba1 0-0 13.Be2?? (13.g3 Qa6 14.Nb3 Be6-/+) 13...Be6 (better is 13...Nf4 14.g4 Nh5 15.gh5 Bh3-+) 14.Nh4 Nf4 15.Qf3 d4 16.Nf5 (better is 16.0-0!? dc3 17.Bc3 Bb4 18.Rb1-/+) 16...Bf5 17.ef5 dc3 18.Bc3 Bb4 (18...Ne2?! 19.Ke2 Rd8 20.Rb1=+) 19.Bb4 Qb4 20.Kd1? (better is 20.g3 Nd5 21.Bd1-+) 20...Nd7 21.g3 (21.Qe4 Qa3 22.Qc4 Kh8 23.Qb3 Qa1 24.Qb1-+) 21...Nd5 (22.d4 b5-+ (< 22...Qd4 23.Bc4-+); better is 21...Ra8!? 22.Ke1 Ra1 23.Bd1-+) 0–1. chevin – toaster, Live Game Caissa's Web, 2004.

6.d3 Bd6 7.Nd2 Nf6 8.c4 ab4 9.ab4 Ra1 (9...Ra6 10.Ngf3 Bg4 11.Bc3 Bb4 12.Rb1 Bf3 13.Qf3 Bc3 14.Rb6 Rb6 15.Qf5-+) 10.Qa1= Bb4 11.Be5 dc4 (11...Nbd7 12.cd5 Nd5 13.Bg7+=) 12.Bf6 (better 12.Bb8!? c3 13.Nc4 c2 14.Ke2+/-) 12...gf6= 13.Qf6 Rg8 (13...Bd2!? 14.Kd2 Qa5 15.Kd1 0-0=) 14.dc4 Qa5 15.Ngf3 Bc3 (15...Bf5 16.Qe5 Qe5 17.Ne5+=) 16.Qf4+/- Na6 17.Ke2 (17.Qe4!? Be6 18.h3+=) 17...Rg4= 18.Qd6 Rg6 19.Qd3 (better 19.Qf4!?=) 19...Bf5-/+ 20.e4 Re6 (20...Nc5 21.Qe3 Be4 22.Ne4 Ne4 23.Qe4 Re6 24.Qe6 fe6-+) 21.Qc2= Bd2 22.Nd2 (22.Qd2?? Re4 23.Kd1 Qa4 24.Qc2 Re1 25.Ne1 Bc2 26.Nc2 Nb4-+) 22...Nb4 23.Qc3?? (better 23.Qb1=) 23…Be4-+ (23...Be4 24.Kd1 Bc2 25.Qc2 Nc2 26.Kc2 Qa2 27.Kc3 Re1-+) 0-1. marekt (2185) - howland (2380), gameknot.com, 2020.

6.d3 Be6 7.Nf3 f6 8.Be2 Nh6 9.0-0 Nd7 (9...ab4 10.ab4 Ra1 11.Ba1=+) 10.Qb3 Be7 (10...ab4 11.ab4 Ra1 12.Ba1=+) 11.d4 (11.Nbd2 0-0=) 11...0-0 (11...e4 12.Nfd2 Bg4 13.f3 ef3 14.Nf3 ab4 15.cb4=) 12.de5 (12.c4!?=) 12...fe5-/+ 13.a4 (13.c4!? Nf7 14.cd5 Bd5 15.Bc4 ab4 16.Bd5 cd5 17.Qd5=+) 13...Nf5 (13...Ng4 14.c4 Qb4 15.Qb4 ab4 16.Nbd2-/+) 14.e4 Nc5! 15.Qc2 (15.bc5 Exploits the pin 15...Qb3) 15...Ne4 16.Nbd2 (16.Bd3!?-+) 16...Nd2 (16...Ne3 17.Nc4 Nc4 18.Bc4 Nf2 19.Rf2 dc4 20.Re1-+) 17.Qd2 e4 18.Nd4 Nd4 19.Qd4 Qd4 20.cd4 ab4 21.a5 Ra7 22.Ra2 Rfa8 23.Rfa1 b3 24.Ra4 b5! 25.R4a3 Ba3 26.Ra3 Ra5 27.Rb3 Ra2 28.Bf1 R8a4 29.h4 h5 30.g3 Bg4 31.Kh2 Kf7 32.Bg2 g6 33.f3 ef3 34.Bf3 Rb2! 35.Rb2 Deflection from f3 35...Bf3 36.Rf2 Ra3 37.Rc2 Ra1 38.g4 hg4 39.Kg3 Ke6 40.Rc6 Kf5 41.Kf2 Ke4 42.Rg6 Ra2 43.Ke1 Ke3 44.Re6 Kd4 45.h5 g3 46.h6 g2 47.Rg6 Ke3 48.h7 Ra1 0–1. tschulz – myfairlady, internet, 2004.

6.d4 e4 7.f3 Nf6 8.fe4 Ne4 9.Nd2 Bf5 10.Ne4 Be4 11.Nf3 Bd6 12.Bd3 f5 13.Be4 fe4 14.Ne5 0-0 (14...ab4? 15.Qh5 Ke7 16.0-0 Be5 17.Qe5 Kd8 18.ab4 (18.cb4?! Qc7+/–; 18.Qg7?! Re8+-) 18...Ra1 19.Qb8 (19.Ra1?! Qc7 20.Qg5 Qe7+/–; 19.Ba1?! Qc7+/–) 19...Kd7 20.Qh8 Rf1 21.Kf1 Qa6 22.Ke1+-) 15.Qh5 Qc7 16.0-0-0 ab4 17.ab4 Nd7 18.Nd7 Qd7 19.Rdf1 g6 20.Rf8 Rf8 21.Qe2 Qf7 22.g3 Qf3 23.Qf3 Rf3 24.Re1 Rf2 25.Rh1 Kf7 26.Ba1 Kf6 27.Kd1?? (27.Bb2-+) 27...Ra2 (28.Bb2 Rb2-+) 0–1. chevin – toaster, Live Game Caissa's Web, 2004.

6.Nf3 Bd6 7.c4 f6 8.d4 ed4 9.Nd4 Qc7 10.c5 Be7 11.b5 cb5 12.Nc3 ½–½. Dovzik,Juri (2375) – Revuckij,Vladimir (2215), Szeged TT04 IM, 1998.

6.Nf3 e4 7.Nd4 Nf6 8.Qc2 c5 (8...Bd6 9.d3=+) 9.bc5= Bc5 10.c4 0-0 (10...dc4 11.Bc4 0-0 12.0-0+=) 11.cd5+= Nd5 12.Ne2 (12.d3 ed3 13.Bd3 h6+=) 12...Bd7= 13.Nbc3 Nf6 14.g4 (14.Ng3 Re8+=) 14...Ng4= (worse 14...Bg4 15.Na4 Qc6 16.Nc5+/-) 15.Ne4 Be7 16.h3 Qh6 17.Rg1 Nf6 18.Nf4 Rc8 19.Qb1 Ne8 20.Bg7 Ng7 21.Qb7 Qc6 22.Qb2 f6 23.Nh5 Qe4 (23...Kf8 24.Nhf6 Bf6 25.Nf6 Nh5 26.Nh5 Qh6 27.Qh8 Ke7 28.Qe5 Qe6 29.Rg7 Kf8 30.Qf4 Ke8+-) 24.Nf6 (24.Rg7 Kf8 25.Bg2 Qf5+=) 24...Bf6 25.Qf6 Qg6 26.Rg6 hg6 27.Qg6 Bf5 28.Qd6 Be6 29.Bd3 (29.Rb1 Nd7+-) 29...Ra7 30.Ke2 Rd7 31.Qg3 Nc6 (31...Rf7 32.Rg1 Bd5 33.Bf5+-) 32.Rg1 Re8 33.Bg6 (33.Bg6 Red8 34.Bh7 Kf8 35.Qf3 Bf7 36.Qf6 (36.Qc6 Rd2 37.Kf1 Rd1 38.Ke2 R8d2 39.Kf3 Bd5 40.Qd5 Rd5 41.Rd1 Rd1-+) 36...Rd2 37.Kf3+-) 1-0. marekt (2305) - pawnraider (2110), gameknot.com, 2021.

6.Nf3 f6 7.Qb3 (7.Be2 e4 8.Ng1 Nd7=+) 7...Bd6 (7...Nd7 8.d3=+) 8.d4 e4 (8...ab4 9.c4 ed4 10.ed4=) 9.Nfd2 a4 (9...Ne7 10.c4 Qc7 11.cd5+=) 10.Qc2 (10.Qd1 Ne7=) 10...f5 (10...Qc7=) 11.f3 (better is 11.c4!? Qc7 12.c5+=) 11...Qc7 12.f4 b5 13.Be2 Be6 (13...Nf6 14.Nf1-/+) 14.h3 (14.Qd1 Nf6-/+) 14...Be7 (14...Nf6 15.Qd1-/+) 15.0-0 Nd7 16.g4? g6 17.Rf2 Nh6 18.Rg2 0-0-0?? 19.Nf1 Nf7 20.Nbd2 Nf6 21.Qd1 Qd7 22.Nh2 Rdg8 23.g5 Ne8 24.Qe1 h6-+ 25.Qg3? hg5 26.fg5 Ng5 (27.h4 Nf7-+) 0–1. HMBCHESS2 – tea, Live Game Caissa's Web, 2005.

6.Qa4 Nd7 7.c4 Nc5 8.Qd1 Nd3 (8...ab4!? 9.cd5 cd5-/+) 9.Bd3= Bd3 10.Bd4 (10.c5 Qc7=) 10...Qc7 11.cd5 ab4 12.Qb3 (12.ab4 Ra1 13.Ba1 cd5 14.Qa4 Kd8 15.Qa8 Kd7=) 12...Be4 13.Nf3 Bd5 14.Qb4 Bf3 15.gf3 e6 16.Qb2 f6 17.Ke2 Bd6 18.h3 Ne7 19.Rg1 Nd5 20.Qb3 Qd7 21.Nc3 e5 (21...c5 22.Nd5 ed5 23.Bc3+=) 22.Nd5+= cd5 (worse is 22...ed4 23.Nb6 Qf7 24.Qf7 Kf7 25.Na8 Ra8 26.a4+/–) 23.Bb2 e4 (better is 23...Ra5!?+=) 24.Qd5 ef3 25.Qf3?? (better is 25.Ke1+=) 25...Qb5-+ 26.Ke1 Qb2 27.Qe4 Qe5 (27...Kf8!? 28.Rb1 Qa3 29.Rb7-+) 28.Qe5-/+ Be5 29.d4+= Bd6 30.Rg7 b5 31.Rb1 Rb8 32.a4 ba4-/+ 33.Rb8 Bb8 34.Kd2 a3 35.Kc2 Bd6 36.Kb3 Be7 37.f3 Kf8 38.Rg2 Rg8 39.Rg8 Kg8 40.e4 Kf7 41.f4 f5! 42.e5 Ke6 0–1. Schmalix,Walter – Hessler,Markus, Nittenau–ch 3rd, 2003.

6.d4 ab4 7.cb4 e6 8.Ne2 (8.Nf3 Nd7=+) 8...Nf6 9.Ng3 (9.Nbc3 Nbd7=+) 9...Bg6 10.h4 (10.Nc3 Nbd7=+) 10...h6 (10...h5 11.Nc3=+) 11.h5 (11.Nc3 Nbd7=+) 11...Bh7 12.Nc3 (12.Be2 Nbd7=+) 12...Bd6 (12...Nbd7 13.Be2=+) 13.Be2 (13.f4 Nbd7=+) 13...Bg3 (13...Nbd7 14.0-0=+) 14.fg3 Nbd7 (14...Qc7 15.g4-/+) 15.0-0 0-0 16.Rc1 (16.Qb3 Rfe8=+) 16...Qd8 (16...Qc7 17.g4=+) 17.b5 c5 (17...Qc7!? 18.Rf4 Qd6=+) 18.dc5= Nc5 19.Nd5 Nce4? (better 19...Nd5!? 20.Qd4 e5 21.Qc5 b6+=) 20.Nf6+- Nf6 21.Rf4 Ne4 (better 21...Qe7!?+-) 22.Bf3+- Qb6?? (22...Qd1 23.Rd1 Nc5+-) 23.Be4 Qe3 24.Kh2 Be4 25.Qg4 f6 (25...g5 26.Re4 Qd2 27.Re2+-) 26.Re4 Qg5 27.Qg5 (27.Qg5 fg5 28.Re6+-) 1–0. guestkafl – guestfjss, internet free game, 2018.

6.d4 Nd7 7.Be2 e5 8.Nf3 Bd6 (8...e4 9.Ne5=+) 9.Nh4 (better 9.de5!? Ne5 10.c4=) 9...Be6=+ 10.Bg4 Ngf6 (10...ab4?! 11.Be6 fe6 12.Qh5 Kd8 13.cb4=) 11.Nf5 Bf8 12.Bh3 g6 (12...ab4?! 13.de5 bc3 14.Bc3-/+) 13.Ng3 Bh3 14.gh3 Bg7 15.Nd2 0-0 16.Nb3 ab4 17.ab4 ed4 18.Qd4 Ra1 19.Ba1 Qb5 20.Qd1 Ne5 21.Na5 Qa6 22.Rf1 Ra8 23.Nb3 Ne4 24.Qb1 (24.Ne4 de4 25.f4 ef3 26.c4-+) 24...Nf3 25.Kd1 Ng3 26.hg3 (26.Re1 Ne1 27.fg3-+) 26...Qf1 27.Kc2 Qe2 (27...Qe2 28.Kc1 Ra2 29.Qa2 Qa2-+) 0–1. Tanacs,Istvan (1660) – Follert,I (2020), Lakitelek HUN, Open, 2011.

6.d4 e6 7.Qa4 Ra7 8.b5 Nf6 9.Nd2 Nbd7 10.Ngf3 Bd6 11.Be2 0-0 12.0-0 Raa8 13.bc6 Qb2 (13...bc6 14.Ra2=+) 14.cd7= Qc3 15.Rfc1 Qb2 16.Bb5 Bc2 17.Qc2 (17.Rc2 Qa1) 17...Qb5 18.Ne5 Be5 (18...Nd7? 19.a4 Qe2 20.Nd7+-) 19.de5 Nd7 20.Qc7 Rfd8 21.Rab1 (21.Nf3 Rab8=+) 21...Qd3-/+ 22.Nb3 b6 (22...a4 23.Nc5 Nc5 24.Qc5-/+) 23.Nd4=+ Qa3 24.Rb3?? (better is 24.Nc6 Rac8 25.Qb7=) 24...Qf8-+ 25.Rbc3 (25.Nc6 Rac8 26.Qd6 Nb8 27.Qf8 Kf8 28.Rb6 Rc7-+) 25...Qe8 26.Nc6 Rdc8 27.Qd6 Kh8 28.Ne7? (better is 28.Nd4-+) 28...Rc3 29.Rc3 Ne5! 30.Qb6 (30.Qe5 d4) 30...Qe7 31.Qa5 (31.Rc5 Nc4 32.Qc6-+) 31...Qb7 (31...Ra5?? 32.Rc8 Qd8 33.Rd8) 32.Qc5 (32.Qa8 Qa8 33.Rc1 Nd3-+) 32...Nd7 (33.h3 Nc5 34.Rc5 Qb4-+) 0–1. Langguth – Kaschner, corr VI/VII ICCF–Cup, 1985.

6.d4 e6 7.Nd2 Nf6 8.Ngf3 Be7 9.Qb3 0-0 10.Be2 Nbd7 11.0-0 ab4 12.cb4 Qc7 13.Ne5 (13.Rfc1 Bd6=) 13...Ne5=+ 14.de5 Nd7 15.f4 Nb6 (15...Bg6 16.Bd4=+) 16.Nf3 (16.g4!? Be4 17.Ne4 de4 18.Bd4+=) 16...Nd7 17.Nd4 (17.Nd2 Bg6=+) 17...Bg6 18.Bd3 Bd3 19.Qd3 c5 20.Rac1 Qb6 21.bc5?? (21.Qb5 Qb5 (worse 21...cd4 22.Qd7 de3 23.Qe7+/-) 22.Nb5 b6=+) 21...Bc5?? (better 21...Qb2 22.Rb1 Nc5 23.Rb2 Nd3 24.Rb7 Bc5-+) 22.Qc2 (22.Rf2 Ra4=+) 22...Ba3-/+ 23.Ba3 Ra3 24.Rb1 Qa7 25.Qf2 Qa5 (25...Qa8 26.f5-/+) 26.Rb7 Nc5 27.Rb5 Qc3 28.Qg3 (28.Qe1!?=+) 28...Ne4-/+ 29.Qf3? (29.Qe1 Qe3 30.Qe3 Re3-/+) 29...Qe3 (better 29...Nd2 30.Qe2 Nf1 31.Kf1 Rfa8-+) 30.Qe3-/+ Re3 31.f5 (31.Rfb1 Rd3 32.R5b4 h5-/+) 31...Rd3 (31...Nd2 32.fe6 Nf1 33.e7=+) 32.fe6 (better 32.Nc6 ef5 33.Ne7 Kh8 34.Nf5=+) 32...Rd4?? (better 32...fe6 33.Rb4 Nc5-/+) 33.ef7 Kh8 34.e6 (34.Rb8! h5 35.Rf8 Kh7 36.Rg8 Rc4 37.f8Q Rc7 38.Rh8 Kg6 39.Qf5) 34...Nf6 (34...h6 35.e7 Rf7 36.e8Q Kh7 37.Rf7 Rd1 38.Rf1 Nd6+-) 35.e7 Rf7 36.Rb8 Ng8 37.e8Q (37.e8Q Rf1 38.Kf1 Rf4 39.Kg1 Rf8 40.Qf8 d4 41.Qg8; 37.Rg8 Kg8 38.e8Q Rf8 39.Rf8) 1-0. carlson (2150) - alkemisti (2140), Rated Bullet game, lichess.org, 2013.

6.d4 e6 7.Be2=+.

6.d4 Nf6 7.Bd3 (7.Nf3 e6=+) 7...Bd3 8.Qd3 e6 9.Nd2 (9.Nf3 Bd6=+) 9...Qc7 (9...Bd6 10.Ngf3=+) 10.Ngf3 Nbd7 (10...Bd6 11.0-0=+) 11.h3 (11.0-0 Bd6=) 11...Bd6=+ 12.0-0 Nb6 (12...ab4 13.ab4 0-0 14.e4 de4 15.Ne4 Ne4 16.Qe4=) 13.Qc2 (13.e4 0-0=) 13...0-0 14.c4 dc4 15.Nc4 (15.ba5 Ra5 16.Nc4 Nc4 17.Qc4 Rfa8=+) 15...ab4= 16.Nd6 Qd6 17.Qb3 (17.Qc5 Qc5 18.dc5 Nbd5 19.Bf6 gf6=+) 17...Na4 (17...Nbd5!?-/+) 18.ab4= Nb2 19.Qb2 Nd5 (19...Rfc8 20.Rfc1=) 20.b5 cb5 21.Qb5 Qb4 22.Qb4+= Nb4 23.Rfb1 Ra1 24.Ra1 Nc6 25.Rb1 Rb8 26.Rb5 Kf8= 27.Kf1 Ke7 28.Ke2 f6 29.Kd3 Kd6 30.g4 Nd8 31.Nd2 Ra8 32.Nc4 Ke7 33.Ra5 Ra5= 34.Na5 Kd6 35.Kc4 b6 36.Nb3 Kc6 37.e4 b5 38.Kb4 Nb7 39.Na5 Na5-/+ 40.Ka5 g5?? 41.f3?? e5-+ 42.d5 Kc5 43.d6 Kd6 44.Kb5=+ Kd7 45.Kc5 Kc7 46.Kd5 Kd7 ½–½. Ruhle,Ernst Albrecht – Hummel,Markus, Vienna op–F, 1996.

6.d4 Nf6 7.h3 h6 8.Nd2 e6 9.Ngf3 Nbd7 10.Nh4 Bh7 11.Be2 Bd6 (11...Be7 12.c4=+) 12.Nhf3 (12.c4 A) 12...ab4 13.c5 Nc5 14.dc5 Bc5 15.ab4 Ra1 16.Qa1 (16.Ba1?! Qb4 17.Nhf3 Bd6+=) 16...Bb4 17.Bf6 gf6 18.Qf6+=; B) 12...Be7=) 12...0-0 (12...ab4 13.ab4 0-0 14.0-0=+) 13.c4= Qc7 14.c5 Be7 15.0-0 (15.ba5 Qa5 16.0-0 b6=) 15...ab4 (15...b6 16.Qb3=+) 16.ab4= Ne4 17.Ne5 (17.Qb3 b6=) 17...Ne5 18.de5 Ra1 19.Qa1?? (19.Ba1 b6 20.Ne4 Be4 21.cb6 Qb6 22.b5 cb5 23.Bd4-/+) 19...Nd2-+ 20.Rd1 Nc4 21.Bc3 (21.Bd4 b5-+) 21...b5 22.Qa2 (22.cb6 Nb6 23.Qa2 Ra8-+) 22...Ne5 23.Bd4 (23.Ra1 Bf6 24.Bd4 Be4-+) 23...Nc4 24.Qa1 e5 25.Bc3 f6 (25...Bf6 26.Bc4 bc4 27.f4-+) 26.Bg4 f5 (26...Qb7 27.Be6 Kh8 28.Qc1-+) 27.Bh5 (27.Be2 Bf6-+) 27...Bf6 (27...f4 28.ef4 Rf4 29.Be2-+) 28.Be2 e4 (28...Re8 29.Bh5 Rc8 30.Be2-+) 29.Bd4 (29.Bf6 Rf6 30.Bc4 bc4-+) 29...Bd4 30.Rd4 (30.Qd4 f4-+) 30...f4 31.Qc3 (31.ef4 Qf4 32.Qe1 Qf6-+) 31...f3 (31...fe3 32.fe3 Qg3 33.Bc4 bc4 34.Rd5 cd5 35.Qa1-+) 32.gf3 ef3 33.Bd1 (33.Bf1 Bf5-+) 33...Qf7 (better 33...Be4 34.Re4 de4 35.Bb3-+) 34.Rf4 Qg6 35.Rg4 Qf6 36.Qc1 (36.Qf6 Rf6 37.Rd4-+) 36...Ra8 37.Rd4 (37.Rf4 Bf5 38.Bf3 Ra1 39.Qa1 Qa1 40.Kg2 Qb2-+) 37…Be4 (37...Be4 38.Re4 de4 39.Bf3 ef3 40.Kh2 Qe5 41.Kg1 Qg5 42.Kf1 Qg2 43.Ke1 Qg1) 0–1. petrobbo (2045) – blindfaithcream (2130), ChessWorld.net, 2014.

6.Nf3= Nd7 7.Nh4 Nh6 8.Nf5 Nf5 9.d4 =.

6.Nf3= e6 7.Be2 Nf6 8.0-0 Nbd7 (8...Bd6 9.Nd4=) 9.d4 (9.d3 e5=) 9...Be7 (9...ab4 10.cb4 Bd6 11.Nh4=) 10.Nbd2 0-0 (10...Qc7 11.Nh4=) 11.Nh4 Bg6 (11...Be4 12.f3 Bg6 13.Ng6 fg6 14.Qb3=) 12.Ng6 hg6 (12...fg6 13.Qb3=) 13.Qc2+= Qc7 14.Rfc1 (14.e4 e5=) 14...Nh7 (14...Bd6!?=) 15.b5+= f5 (15...Bd6 16.Nf3+=) 16.g3 (16.c4 Rac8+/–) 16...g5 (16...Rfc8 17.Qd1+/–) 17.f4 (better is 17.c4!?+/–) 17...gf4+= 18.ef4 g5 (18...Nhf6 19.bc6 bc6 20.c4+=) 19.fg5 Bg5 20.Rf1 (20.Re1 Be3 21.Kg2 f4+=) 20...Be3 (20...c5 21.dc5 Qc5 22.Kg2+=) 21.Kg2 Rf6 22.Rf3 Bh6 23.h4 Raf8 24.Rg1 Rg6 25.Kh3 Bg7 26.c4 cb5+= 27.c5 Ndf6 28.Bb5= Ne4 29.Nf1 b6 30.c6 Nhf6 31.Bc1 Nh5 32.Bb2 Bf6-/+ 33.Rg2 Qg7 34.Qd3 Bd8 35.a4 Bc7 36.Bc1 f4 37.g4+= Nef6?? 38.g5 Ne4+= 39.Nh2?? Qf7?? 40.Ng4+= Qf5 41.Kh2 Ng5?? 42.Nh6!! Rh6 43.Rg5 Ng7 44.Rf5 Rh4 45.Kg1 Rf5 46.Kf2 Rg5 47.Ke1 Rg1 48.Rf1 Rg3 49.Qe2 Kf7? 50.Qf2 Nf5 51.Rg1 f3+/– 52.Kd1 Rd4-/+ 53.Kc2 Rdg4?? 54.Rg3+= Rg3 55.Kb1 e5 56.Qh2 e4 57.Qh7 Ng7 58.Bb2 e3? 59.Bg7 Rg7 60.Qf5 Kg8 61.Qf3 Re7 62.Qd5 Kg7 63.Be2 Kf6 64.Kc2 Re5 65.Qf3 Ke6 66.Qg4 Kd5 67.Qd7 (67.Qd7 Kc5 68.Qc7+-; 67.Bf3 Kc5 68.Kc3 Rd5 69.Qc4 Kd6 70.Qd5 Ke7 71.Qg5 Ke8 72.Bh5 Kf8 73.Qf6 Kg8 74.Bf7 Kf8 75.Be6 Ke8 76.Bd7#) 1–0. Schwichtenberg,Juergen – Weschke,Wolfgang, 18sen.DSenEM(GrB) op, 2006.

6.Nf3 e6 7.Be2 Nf6 8.Nh4 Bg6 9.Ng6 hg6 10.Bf3 (10.d3 Bd6=) 10...Nbd7 11.Qc2 Ne5 12.Be2 Nc4 13.d3 Nb2 14.Qb2 Bd6 15.h3 g5 16.Rf1 e5 17.Nd2 Ke7 18.Nb3 ab4 19.ab4 d4 (19...Ra1 20.Qa1 Rh4 21.Nd2=) 20.Ra8 (20.ed4!? Nd5 21.de5 Bb4 22.cb4 Qb4 23.Qd2 Qb3 24.Qg5 Kd7 25.Rc1=) 20...Ra8 (20...dc3 A) 21.Qc3?? Bb4 (21...Ra8?! 22.Nc5-+) 22.Qd2 Ra8-+; B) 21.Qa1 Ra8 22.Qa8 Qb4 23.f4 c2 24.Kf2 Qb3 25.fg5-+) 21.ed4+= Nd5 22.de5 (22.Kd2 ed4 23.Nd4 Nc3 24.Nf5 Ke6 25.Kc3 Kf5+=) 22...Bb4 23.cb4 Qb4 24.Qd2 Qb3 25.Qg5 Kf8 26.f3 Nc3?? (26...Qb4 27.Kf2 Re8+=) 27.Kf2= Ne2 28.Ke2 Ra2 29.Ke3 Qb6 30.Kf4 Qd4 31.Kg3 Qd3 32.Rf2 Rf2+= 33.Kf2 b5 34.Qf4 Qc2 35.Kg3 Qg6 36.Kh2 c5-/+ 37.Qe3 Qc6 38.Qg5 Qd5 39.Qf5 g6 40.Qf6 c4-+ 41.f4 b4 42.Qh8 Ke7 43.Qf6 Kd7 44.e6? Qe6 45.Qd4 Kc6 46.Kg3 Kb5 47.Qa7 Qd5 48.Qb8 Ka4 49.Qa7 Kb3 50.Qe3 Qd3 (50...Qd3 51.Qd3 cd3-+) 0–1. Alexandr,Petr (1665) – Stanek,Stanislav (1915), Ostrava CZE, Ostravsky Konik, 2014.

6.Nf3= e6 7.Nh4 Bg6 =.

6.Nf3 Nf6 7.Be2 e6 8.0-0 Bd6 9.d3 Qc7 10.Nbd2 Nbd7 11.Nb3 ab4 12.ab4 0-0 13.Nbd4 Bg6 14.Qd2 e5 15.Nc2 e4 16.Nh4? (better is 16.de4!? de4 17.Nh4 Bh2 18.Kh1-/+) 16...ed3-+ 17.Bd3 Bd3 18.Qd3 Ne5 19.Qe2 Nc4 20.Nd4 Bh2 21.Kh1 Ne4 22.Ra8 Ra8 23.Nhf5 g6 24.Nh6 Kg7 25.Ng4 Bd6 26.Ra1 Ra1 27.Ba1 h5 28.Kg1 Qb8 29.f4 (29.Nc2 hg4 30.Qg4 Bh2 31.Kf1 Qa8-+) 29...hg4 30.Qg4 Ne3 31.Qf3 Nc4 32.Qg4 Bf4 0–1. Wurm,Tamas – Niewold,Jaap (1685), IECG, 2006.

6.Nf3 h6 7.d4 (7.Be2 Nd7=) 7...Nf6 (7...ab4 8.cb4 e6 9.Bd3=) 8.Bd3 (8.Nbd2 ab4 9.ab4 Ra1 10.Qa1 e6=) 8...Bd3 9.Qd3 e6 10.Nbd2 (10.0-0 ab4 11.cb4 Nbd7=) 10...ab4+= 11.cb4 Bd6 12.0-0 0-0 (12...Qa6 13.Qc2+=) 13.Rfe1 (13.Nb3 Nbd7=) 13...Nbd7+= 14.h3 (14.Rac1 Rfd8+=) 14...Qc7 15.Rac1 e5 (15...Rfd8 16.Red1+=) 16.e4 (16.de5 Ne5 17.Be5 Be5 18.Ne5 Qe5=) 16...ed4 (16...Ne4 17.de5 Ne5 18.Be5 Be5 19.Ne5 Qe5 20.f3=) 17.Bd4 (17.Qd4 c5 18.Qd3 de4 19.Ne4 Ne4 20.Qe4 Rfd8+=) 17...de4 (17...Rfe8 18.ed5 Nd5 19.Nc4=) 18.Ne4+= Bf4 (18...Ne4 19.Re4 Rfe8 20.Re8 Re8 21.Qc3=) 19.Rcd1 Ne5? (19...Nd5!?+=) 20.Nf6 (20.Ne5 Be5 21.Nf6 Bf6 22.Bf6 gf6+-) 20...gf6+/– 21.Ne5 Be5?? 22.Be5 fe5+/– 23.Qg3 Kh7 24.Qe5 Qe5+= 25.Re5 Ra3 26.Re7 b5 27.Rc7 Rb3 28.Rd4 Rc3 29.Rd6 Rc4 30.Rcc6 Rb4 31.Rh6 Kg7 32.Rh5 Rb8 33.Rf5 Rb7 34.Rg5 Kf8 35.Re5 Rb1= 36.Kh2 Kg7 37.Rg5+= Kf8 38.g3 b4= 39.Rcc5 ½–½. Groebner,K – Rudhart,M, Ditzingen (year?).

6.Nf3 Bf5 7.Qa4 Nbd7 8.d4 Qc7 9.c4 dc4 10.ba5 b5 11.ab6 Nb6 12.Qd1 Na4 13.Bc3 Bb1 14.Qb1 Nc3 15.Qc2 Nce4 16.Bc4 e6 17.0-0 Ra3 18.Bb5 Rc3 19.Ra8 Ke7 20.Qa2 Nd7 21.Ra7 Qd6 22.Ne5 Nef6 23.Bc4 g6 24.Qa4 Bh6 25.Nc6 Kf8 26.Qa5 Rc4 27.Ne5 Rc8 28.Rb1 Kg7 29.Qa4 Rc7 30.Ra6 Rb8 31.Ra1 Qb4 0–1. Wessel – J Meyer, 1994.

6.Nf3 Bg4 7.Be2 Nbd7 8.d4 e6 9.Nbd2 Bd6 10.c4 Qd8 11.c5 Bc7 12.0-0 0-0 13.b5 cb5 14.Bb5 Qe7 15.Rc1 e5 16.de5 Be5 17.Be5 Ne5 18.Be2 Rfc8 19.Ne5 Be2 20.Qe2 Qe5 21.Nf3 Qe7 22.Qb5 ½–½. Marchant – Brodie, 1973.

5.d3 e5 6.Nf3=.

5.d3 Bf5 6.Nd2 Nd7 (6...ab4 7.ab4 Ra1 8.Qa1=) 7.Nc4+= Qc7 8.Nf3 (8.e4 d5 9.ef5 dc4+=) 8...ab4 9.ab4 Ra1 10.Qa1 Ngf6 (10...e5 11.Qa8 Nb8 12.e4+=) 11.Nd4 (11.Qa5!? Qa5 12.Na5+- (worse 12.ba5 d5 13.Ne3 Bg6=)) 11...Bg6= 12.Qa8 Qd8?? (better 12...Qb8 13.Qb8 Nb8=) 13.Qb7+- (13.Qb7 Qb8 14.Qa6+-) 1–0. Janek – Ccvmep, internet, 2019.

5.e3 Nd7 6.Qa4 Ngf6 7.Bd3 (7.d4!?=) 7...e5 (7...Nc5 8.Qc2 Nd3 9.Qd3-/+) 8.Ra2 (8.Be2 d5=+) 8...Be7 9.c4 0-0 10.h3 (10.Nc3!?-/+) 10...ab4-+ Black gets in control 11.Qd1 (11.Qa8!? Nc5 12.Bh7 Kh7 13.ab4 Nd3 14.Ke2-/+) 11...Nc5 Black prepares e4 12.Be2 b3 13.Ra1 Na4 14.Qc1 Nb2 (14...Be6 15.Nf3-+) 15.Qb2 e4 16.Bd1 (16.Nc3 d5 17.cd5 Nd5-+) 16...Be6 17.Qb3 Qb3 (17...Qc5 18.Qb7 Rfb8 19.Qe7-+) 18.Bb3 b5 (18...Nd7 19.Ne2 Nc5 20.Nd4 Nb3 21.Nb3 Bc4 22.Nd4-+) 19.Ne2 bc4 20.Bc2 c5 (20...Rfb8 21.Nbc3-+) 21.Nbc3-/+ d5 22.a4 Rfb8 23.0-0 (23.f3 ef3 24.gf3 Ra5-+) 23...Rb2 24.Rfc1 Bd6 25.Rab1 Rb4 26.Na2 Rb1 27.Rb1 Be5 28.Rb5 (better 28.Nec3-+) 28...Bd7 29.Rc5 (29.Rb7 Ba4 30.Ba4 Ra4 31.Nec3-+) 29...Bd6 (29...Ba4 30.Ba4 Kf8 31.Nac3+-) 30.Rc4 dc4 31.Kf1 (31.Nac3 Be5-+) 31...Ba4 32.Bb1 (32.Ba4 Ra4 33.Nec3-+) 32...Bc2! 33.Bc2 Deflection from a2 33...Ra2 34.Bd1 (34.Nd4 Bc5 35.Bd1 Rd2-+) 34...Rd2 35.Ba4 Ra2 36.Bd1 Be5 (better 36...Ra1!? 37.Nc3 Bb4 38.Ke2 Bc3 39.g3-+) 37.f4 (37.Nd4 Bd4 38.ed4 Nd5-+) 37...ef3 38.gf3 Nd5 39.Kf2 Nc3 (better 39...Bf6!? 40.f4-+) 40.Ke1 Ra1 (40...Ne2 41.Be2 c3 42.Bd1-+) 41.Nc3 Bc3 42.Ke2 Ra2 43.Kf1 Rh2 (better 43...Bd2 44.e4-+) 44.Be2 Re2 (better 44...Bd2 45.Bc4 Be3 46.Bd3-+) 45.Ke2 f5 46.Kd1 Kf7 47.Ke2 (47.Kc2 Be5 48.Kd2 Kf6-+) 47...Ke6 (47...Kg6 48.e4-+) 48.Kd1 Kd5 49.Kc2 Bf6 (49...Bd4 50.h4-+) 50.Kd2 g5 51.Kc2 (51.Ke2-+) 51...h5 52.Kd2 g4 (52...g4 53.hg4 h4-+) 0–1. petrobbo (2030) – FeatherStrike (2265), ChessWorld.net, 2020.

5.e3 e5 6.Qc2 Nf6 7.d3 Bf5 8.Nd2 Be6 (8...d5 9.Ngf3 Nbd7 10.e4=+) 9.Ngf3= h6 10.Rb1 Nbd7 11.Be2 Be7 12.0-0 0-0 (12...ab4 13.cb4 Qb5 14.Nc4=) 13.d4 Qc7 14.c4 e4 (14...b6 15.Ra1=) 15.Ne4+= Ne4 16.Qe4 d5 17.Qc2 ab4 18.ab4 Qb6 (18...Bb4 19.Bc1 Bd6 20.c5+=) 19.Ba1 (19.c5 Qc7+-) 19...Ra7 (19...dc4 20.Nd2+=) 20.c5+- Qc7 21.Rb3 (21.b5 cb5 22.Bb5 Rfa8+-) 21...Rfa8 22.Bc3 (22.Bb2 b6+-) 22...Nf6 (22...b5 23.cb6 Nb6 24.Rc1+-) 23.Rfb1 Ne4 24.Be1 Bf5 25.Bd3 Qd7 26.Ne5 Qe6 27.f3 f6 (27...Ra2 28.R3b2 Rb2 29.Rb2+- (29.Qb2?! Ng5+-)) 28.fe4 (28.Be4?! de4 29.fe4 Bh7=) 28...fe5 (28...Be4 29.Be4 de4 30.Nc4+-) 29.ef5 Qf6 30.de5 Qe5 31.Qe2 (31.e4 Bg5+-) 31...Bf6 (31...Bg5 32.e4+-) 32.Bc3 Qe7 33.Bf6 Qf6 34.Qb2 Qg5 35.Qe5 Ra2 36.R3b2 R2a3 37.Rb3 (37.Rd2 Kf8+-) 37...Ra2 38.Qg3 Qf6 (38...Qg3 39.hg3 Rd2 40.b5+-) 39.h3 Rd2 40.Qg6 (better 40.b5!? cb5 41.Bb5 Rc2+-) 40...Raa2 41.Qf6 gf6 (41...Rg2 42.Kf1 gf6 43.Ra1 Raf2 44.Ke1+-) 42.Bf1 h5 (42...Ra7 43.R3b2 Rb2 44.Rb2+-) 43.Rd3 (better 43.b5!? Kg7+-) 43...Rf2 44.g4 (better 44.e4!? de4 45.Rd7 Kf8+-) 44...hg4 45.hg4 Kf8 (45...Rf3 46.e4! Rf4 47.ed5 Rg4 48.Kh1 cd5 49.Rbd1+- (49.Rd5?! Rh4 50.Bh3 Rh3 51.Kg1 Rg3 52.Kf1 Rf3 53.Kg1 Rg3 54.Kf1 Rf3 55.Kg1 Rg3=)) 46.Rd4 (better 46.Ra1! Kg7+-) 46...Rf3 47.Re1 Rff2 (47...Rg3 48.Kh1+-) 48.Rf4 (better 48.Ra1! Rab2 49.Ra8 Ke7+-) 48...Rfb2 49.Rd4 Rf2 50.Red1 Rf3 51.e4 Rg3 52.Kh1 Rg4 53.ed5 Rg5 54.R4d2 (54.Bd3 cd5 55.Rd5 Rh5 56.Kg1 Rg5 57.Kf1 Rg4 58.Rd8 Kg7+-) 54...Ra4 (54...Rd2 55.Rd2 cd5 56.Rd5+-) 55.d6 Ke8 (55...Rh5 56.Kg1 Rg5 57.Rg2 Rg2 58.Bg2+-) 56.d7 (56.Rh2!? Rg8+-) 56...Kd8 57.Re1 (57.Rh2 Rg8 58.Bc4 Rf8+-) 57...Rg8 (57...Rh5 58.Kg1 Rg5 59.Bg2+-) 58.Bc4 Rf8 59.Be6 (59.Bf7! Ra8+-) 59...Kc7 60.Rb1 Rh8 61.Rh2 Rf8 (61...Raa8 62.Rh8 Rh8 63.Kg2+-) 62.Rh7 Kd8 (62...Rd8+-) 63.b5 Ra8 64.bc6 bc6 65.Rb7 Ra1 66.Kh2 Ra8 67.Kh3 Ra3 68.Kh4 Ra8 69.Kh5 (69.Kh5 Rg8 70.Bg8 Rc8 71.dc8R Kc8 72.Be6 Kd8 73.Rh8) 1–0. Dos Anjos,Diovana Ferreira (1605) – Tavares,T M (1670), PARANAENSE DE XADREZ FEMININO – Pirai d, 2017.

5.Qb3 Nf6 6.e3 d5 7.c4 ab4 8.ab4 Ra1 9.Ba1 Bb4 (9...Nbd7!?-/+) 10.Be5+= Nbd7 11.Bd4 Bc5 12.Qa2? (better is 12.Qb6 Bb6 13.cd5 Bd4 14.dc6=) 12...Bd4-+ 13.Qa8?? (better is 13.ed4 Qd4 14.Nf3-+) 13...Qb1 14.Ke2 0-0 15.ed4 Re8 16.Kf3 Qe4 17.Kg3 Qg4 0–1. Kuehnel,Ann Kathrin – Van Amelsvoort,Marie A, Niedersachsen–ch U16/18 Girls, 2006.

5.Qc2 d5 6.e3 Bd6+= 7.d3 Nf6 8.Nd2 0-0 9.Be2 Re8 10.e4 (10.Ngf3 Be6+=) 10...Nbd7 (10...ab4 11.cb4 c5 12.ed5 cb4 13.Qb3-/+) 11.Ngf3 Nf8 12.0-0 Ng6 13.Nb3 a4 14.Nc1 Nf4 15.Bd1 (15.c4 Bc7-/+) 15...Bg4 16.c4 Qd8 17.c5 Bc7 18.Nd2 Qd7 19.f3 Be6 20.Ne2 Ng6 21.Nc3 b5 22.Ne2 (22.cb6 Bb6 23.Kh1 Bd4-/+) 22...d4 23.Rf2 Nh5 24.Nf1 Rf8 (24...Bd8 25.Nfg3 Nhf4 26.Nf4 Nf4 27.Ne2-/+) 25.Nfg3 Nhf4 26.Bc1 Bd8 (26...h6 27.Nf4 ef4 28.Ne2-/+) 27.Nf4+= ef4 28.Ne2 Bg5 29.Bb2 (29.Qd2 h5+=) 29...Bf6 30.Bc1 (30.Qd2 Be5-/+) 30...Be5 31.Bd2 (31.g3 fg3 32.hg3 f5-/+) 31...f5 32.Qc1 Qc7 33.Bc2 Rf6 34.Bb1 (34.Qb2 Rd8-/+) 34...Raf8 (34...fe4 35.fe4 Raf8 36.Qb2-+) 35.Ba2 (35.ef5 Bf5 36.Qb2 Rd8-/+) 35...Ba2-+ 36.Ra2? (better is 36.ef5 Bf7 37.fg6 Bg6 38.Qc2-+) 36...fe4 37.de4 d3 38.Nc3 Bd4 (38...Qf7 39.Rb2-+) 39.Qb1? (39.Nd1 Qf7 40.Bc3 Qc4-+ (40...Bf2?! 41.Rf2 Re6 42.Nb2-/+)) 39...Rd8 (better is 39...Bf2 40.Kf2 Ne5 41.Kg1-+) 40.e5 (40.Nd1-+) 40...Bf2 41.Kf2 Qe5 42.Ne4 Qd4 43.Kf1 Re6 44.Bc3 (44.Qa1 Re4 45.fe4 Qe4 46.Qe1-+) 44...Qc4 45.Bd2 Nh4 46.Kg1 (46.Nd6 Qd5 47.Ne4-+) 46...Rg6 47.Kh1 Rg2 48.Rb2 Re2 49.Nd6 Qd5 0–1. Melderis,Uldis (1975) – Morozov,Egor (2175), Golden Sands BUL, 3rd Grand Europe Open, 2014.

5.Qc2 d5 6.e4 +=.

5.Qc2 d5 6.Nf3 Nd7 +=.

5.Qc2 Nf6 6.e3 (6.Nf3 e4 7.Ng5 d5+=) 6...d5 7.Nf3 (7.c4 ab4 8.Be5 ba3 9.Na3 Ba3 10.Bb8 Qd8=) 7...Bd6 (7...e4!? 8.Nd4 Bd6+=) 8.c4= ab4 9.ab4 (9.Be5 Be5 10.Ne5 Be6=) 9...Ra1 10.Ba1 Qb4 (10...Na6 11.Be5 Be5 12.Ne5 Nb4 13.Qa4=) 11.Ne5 (11.Bc3 Qb6 12.Be5 Be5 13.Ne5 Nbd7=) 11...Be5 (11...Be6 12.Bc3 Qb6 13.cd5 Bd5 14.Nc4 Bc4 15.Bc4=) 12.Be5+= Nbd7 13.Bc3 (13.Bb2 dc4 14.Bc4 b5+=) 13...Qd6 14.d4 (14.Bf6 Nf6 15.c5 Qc7+=) 14....0-0 (14...dc4 15.Bc4 Nb6 16.Bd3+=) ½–½. Kaszynski,Bartlomiej – Kaczorowski,Piotr, Koszalin Poland, 1998.

5.d4 ed4 6.Nd2 d5 +=.

5.e3 Nf6 6.d4 e4 7.Qc2 d5 8.Nd2 ab4 9.cb4 Bd6 10.Ne2 0-0 11.Ng3 Ng4 12.Be2 Qd8 13.0-0 h5 (13...Qh4 14.Bg4 Bg4 15.Nb3-/+) 14.h3 (14.Rfc1!?+=) 14...Ne3!-/+ 15.Qb3? (15.fe3 Qg5) 15...Nf1-+ 16.Ndf1 h4 17.Nh1 Qg5 18.Ra2 (18.Re1 Be6-+) 18...f5 19.f3 Rf6 20.Bc3 (20.Nf2 Rg6 21.Ne3 Bf4-+) 20...e3 21.Be1 f4 22.Kh2 Nd7 23.Bd3 Nb6 24.Qc2 (24.b5 Nd7-+) 24...Bf5 25.Bf5 Qf5 26.Qe2 g5 27.Bc3 Nc4 28.a4 Qb1 29.Ra1 (29.b5 Qb3 30.Rc2 Ra4 31.bc6 bc6-+) 29...Qb3 30.Qe1 (30.Be1 Ra4 31.Ra4 Qa4-+) 30...Na3 31.Qc1 (31.Rc1 Ra4 32.Qe2 Nb5-+) 31...Ra4 32.Kg1 Bb4 33.Bb4 Qb4 34.Ne3 Qd4 (34...Qd4 35.Ra3 Ra3 36.Qa3 Qe3 37.Qe3 fe3-+) 0–1. Baer,Cy (1895) – Klawitter,Rolf (2110), RSS4D easy–41, 2007.

5.e3 Nf6 6.d4 e4 7.c4 d6 =.

5.e3 Nf6 6.d4 e4 7.g3 d5 8.Bg2 Bg4 9.Ne2 ab4 10.cb4 h5 11.0-0 h4 12.h3 (12.Nbc3!?-/+) 12...hg3 13.hg4 gf2 14.Rf2 Ng4 15.Qe1 Bd6 16.Nf4 (16.Rf4 Bf4 17.ef4 Ne3-+) 16...g5 17.Nh3 Bh2 18.Kf1 Qb5 19.Re2 Qd3?? (19...Ne3 20.Kf2 Ng4 21.Kf1 Qd3 22.Ng5 Ne3 23.Kf2 Nd1 24.Kf1 Bg3-/+ (worse is 24...Nb2 25.Qd2 Rg8 26.Nf3-+)) 20.Nf2?? Ne3# 0–1. Baer,Cy (1895) – Klawitter,Rolf (2110), RSS5E easy–35, 2007.

5.e3 Nf6 6.Be2 Be7 (6...ab4?! 7.cb4 e4 8.f3+=) 7.d4 ed4 8.Qd4 c5 9.Qc4 Nc6 10.b5 d5 11.Qf4 a4 (better is 11...Ne4!? 12.c4 g5-+) 12.Nd2+= Nd8 13.c4 Ne6 14.Qg3 d4 15.f4 (better is 15.Ngf3!?+=) 15...0-0 16.e4 Qa5 17.Bd3?? (better is 17.Bf3-/+) 17...Nh5-+ 18.Qf3 Nhf4 19.Nh3 Nh3 20.gh3 Bh4 21.Kd1 Bg5 22.Qf2 Nf4 23.Bf1 Bh3 (better is 23...Nh3!? 24.Bh3 Be3 25.Qe2 Bh3 26.Nf1-+) 24.Qg3 Bf1 25.Rf1 Ne6 26.Rf2 (26.Nf3 Bf4 27.Qe1 Qc7-+) 26...Bd2 (better is 26...Rad8 27.Nf1-+) 27.Rd2 Rae8 28.Kc2 Qc7 (better is 28...f6 29.h4 b6-+) 29.Qg2? (29.Qc7 Nc7 30.Re1-+) 29...Qe5 30.Rg1 (30.Rf1 Nf4 31.Qf3 Qe4 32.Qe4 Re4-+) 30...Nf4 31.Qg4 (31.Qg3-+) 31...Qe4 32.Kc1 Ng6 (32...Ne2 33.Re2 Qg4 34.Rg4 Re2 35.Bd4 cd4 36.Rd4-+) 33.Qd7 (33.Qe4 Re4 34.Rdg2-+) 33...Ne5 34.Qh3 Nf3 (34...Nf3 35.Qg4 Ng1 36.Qg1 Qe6-+) 0–1. Ioan,Cesar – Sava,Christiansen (2270), Petre Seimeanu Memorial, 2002.

5.e4 d5 6.d3 Nf6 7.Nd2 Bc5 8.Qe2 ab4 9.ab4 Ra1 10.Ba1 Qa7 11.Bb2 Qa2 12.bc5 Qb2 13.c4 Qc1 14.Qd1 Qd1 15.Kd1 de4 16.Ne4 Ne4 17.de4 Ke7 18.g3 Na6 19.Be2 Nc5 20.Nf3 Ne4 21.Ke1 f6 22.Nd2 Nc5 23.f3 Rd8 24.Kf2 Rd2 (25.Ke3 Ra2-+) 0–1. Moderlak,Stephan – Kagel,Fred, 10 years 4a TSV M/v, 1999.

5.e4 Nf6 6.Qc2 d5 7.d3 Bd6 8.Nf3 0-0 9.Nbd2 ab4 10.cb4 Nbd7 11.Be2 Re8 12.0-0 Qc7 13.Nb3 Nf8 14.ed5 Nd5 15.g3 Bf5 16.Nh4 Bh3 17.Rfe1 Nd7 18.Bf1 Bf1 19.Kf1 N7f6 20.Nf5 Bf8 (21.Kg2 Qd7-/+) 0–1. FR (1660) – Nonnenmacher,Thomas (1950), BdF, 2004.

5.e4 Nf6 6.Qc2 d5 7.ed5 cd5 8.Nf3 e4 9.Ne5 Bd6 10.d4 (10.c4 Qc7 11.Qc3=+) 10...Be5 (better 10...ed3 11.Nd3 0-0-/+) 11.de5+= Ng4 12.c4 Be6? (better 12...dc4!? 13.h3 Nh6+=) 13.h3 (13.cd5 e3 14.f3 Nf2 15.de6 Qe6 16.Bb5 Nc6+-) 13...Nh6 14.cd5 Bd5 15.Nc3 Be6 16.Ne4 0-0 17.Qc5 Nd7 (17...Qd8 18.Nd6 ab4 19.Nb7+-) 18.Qb6+- Nb6 19.Nc5 (19.b5 Nf5+-) 19...Bd5 20.f4 (20.b5 Rac8 21.Rc1 Rfe8+/-) 20...Nf5 21.Kf2 (21.Rh2+/-) 21...Ne7 (better 21...ab4!? 22.Bd3 Nh4 23.ab4 Ng2+=) 22.Bd3+- Nc6 (22...Bc4 23.Be4 Bd5 24.ba5+-) 23.Rhd1 (better 23.b5 Ne7 24.Bd4+-) 23...ab4+/- 24.ab4 Ra1 25.Ba1 Nb4 26.Bb1 Bc6 27.Bd4 N6d5 28.g3 b6 29.Ne4 Ba8 30.Nd6 Nc6 31.Bb2 Ndb4 32.Be4 (32.Bc3 Na6+-) 32...Ne7+/- 33.Bb1 h5 (33...Nec6 34.Bc3 Rb8+-) 34.Ba3+/- Nbc6? (better 34...Ned5+/-) 35.Nf5+- Re8 (35...Nf5 36.Bf8 Nfd4+-) 36.Nd6 (better 36.Ne7 Ne7 37.Be7 Bb7+-) 36...Rb8?? (36...Rf8 37.Ba2 h4+-) 37.Ba2+- h4 38.Bf7 Kh8 (38...Kf8 39.gh4 b5 40.Bc5+-) 39.Be6 (39.gh4 Rf8+-) 39...hg3 40.Kg3 Ng6 (40...Kh7 41.Nf5 Rd8 42.Bd6+- (42.Ne7?! Rd1 43.Bf5 Kh8=)) 41.Nf7 (41.Nc8 Bb7 42.Nb6 Ba6+-) 41...Kh7 42.Bf5 Nce7 (42...b5 43.Ng5 Kh6 44.Bg6 Kg6 45.Kg4 Ne5 46.fe5+-) 43.Bb1 (better 43.Be7 Kg8 44.Bg6+-) 43...Bd5? (43...Nd5 44.f5 Ngf4+-) 44.Ng5 Kh6 45.h4 (better 45.Bg6 Ng6 46.Rd5+-) 45...Ra8 46.Rd3 (46.Bd6 Ra1 47.h5 Rb1 48.Rb1 Nf5 49.Kh2 Nf4+-) 46...Bc4 (46...Nf5 47.Kg4 Ra4 48.Bc1 Ne5 49.Kf5 Nd3 50.Bd3+-) 47.Rc3 Nf5?? (better 47...Nd5 48.Rc4 Ra3 49.Nf3 Nge7+/-) 48.Bf5 Bb3 (48...Bd5+-) 49.Rb3 (49.Rb3 Rb8 50.Nf7 Kh7 51.e6+-) 1-0. blitzbullet (2480) - Berthe (2455), Rated Blitz game, lichess.org, 2016.

5.Nf3 e4 6.Nd4 c5 7.Nc2 Nc6 8.Qc1 (8.Ne3!?=) 8...d5-/+ 9.g3 Nf6 10.Bg2 Bg4 11.h3 Bf5 12.0-0 d4 (12...ab4 13.ab4 Ra1 14.Ba1 cb4 15.Ne3-/+) 13.cd4 (13.d3 ab4 14.ab4 Ra1 15.Ba1 ed3 16.ed3 Bd3 17.bc5 Qc5 18.Re1 Be7=) 13...cd4 14.b5 (14.e3 d3 15.Nd4 Bd7=+) 14...Qb5 15.Nd4 Nd4 16.Bd4 Qe2 (16...Be7!?=+) 17.Nc3 Qd3 (better is 17...Qa6 18.Bf6 Qf6+=) 18.Bf6-/+ gf6 19.Re1 Rc8 20.g4 (20.Qb2!? Be7 21.Be4 Be4 22.Ne4+/–) 20...Be6= 21.Bf1 (better is 21.Re3!? Qd7 22.Qb2+= (< 22.Be4 h5=+; < 22.Re4 Be7=+)) 21...Qd4=+ 22.Qb1 Bc5 (22...f5!? 23.gf5 Rg8 24.Bg2 Bf5 25.Qb7 Be7 26.Ne4 Bh3=+) 23.Ne4= Ba7 (23...f5!? 24.Qb5 Kf8 25.Nc5 Rc5=) 24.Qb7+/– 0-0 25.Nf6 Kh8 (25...Kg7 26.Ne4+/–) 26.Qf3 Qd2 27.Re5 (27.Rad1 Rc3 28.Qf5 Qc2+/–) 27...Rc2 Now all is on f2 28.Ne4 (28...Qh6 29.Ra5+/–) 1–0. Baez Morales,Dionisio – Bacallado,H, Tenerife–chT, 1989.

5.Nf3 e4 6.Ne5 =.

5.g3 c5 6.Bg2= Qc7 7.b5 c4 8.a4 Nf6 9.d3 d5 10.Nf3 Bc5 (10...cd3 11.ed3 Bd6 12.0-0=+) 11.0-0 0-0 12.Qc2 (12.Ne5 Qe5 13.d4 Bd4 14.cd4=) 12...b6 (12...Bf5 13.Qd1=+) 13.Ba3 (13.dc4!? e4 14.Nd4+=) 13...cd3 14.ed3 Nbd7 15.d4 Ba3 16.Na3 e4 17.Ng5 h6 18.Nh3 Re8 19.Nf4 Nf8 20.c4 dc4 21.Qc4 Qd8 22.Rfe1 Bg4 23.Nc2 Rc8 24.Qb3 g5 25.Ne2 Ne6 Attacking the isolated pawn on d4 26.h3 (26.Rad1!?=) 26...Be2-/+ 27.Re2 Rc2 28.Qc2 Will e4 fall? (28.Qc2 Nd4 Double attack (28...Nd4 Decoy); 28.Rc2 Nd4 Double attack (28...Nd4 Decoy)) 28...Nd4 29.Qb2 Ne2 30.Qe2 Qd4 Black plans e3 31.Qd1 Qd3 (31...Rd8 32.Qe1-/+) 32.Bf1 Qd7 33.Rc1 e3 34.Qd7 (34.Qf3 Qd4 35.Rc7 ef2 36.Qf2 Qf2 37.Kf2 Ne4 38.Kf3 Nc5-/+) 34…Nd7 1–0. moss42 (1875) – AsceticKingK9 (2120), ChessWorld.net, 2013.

6.b5 cb5 7.Qb3 Bd7 8.Qd5 (8.Nf3 e4 9.Ne5 Nf6+=) 8...Bd6-/+ 9.d4 Nf6 10.Qb3 a4 11.Qc2 0-0 (11...ed4!? 12.cd4 0-0-/+) 12.de5+= Be5 13.Nf3 Nc6 14.Bd3 Bg4 (14...Be6 15.Nbd2+=) 15.Nbd2 Rfd8 16.0-0 Bh5 17.Rab1 Qc5 18.Ne4 Ne4 19.Be4 b4?? (better is 19...Bg6+=) 20.ab4 (better is 20.Bh7 Kh8 21.cb4 (21.Ne5?! Ne5 22.cb4 Nf3 23.Kh1 Qc2 24.Bc2 Nd2=) 21...Qc2 22.Bc2 Bf3 23.gf3+-) 20...Nb4?? (better is 20...Qe7 21.b5 Bf3 22.Bf3 Na5 23.Qa4 Qc7+/–) 21.Bh7+- (worse is 21.cb4 Qc2 22.Bc2 Bb2 23.Rb2 Bf3 24.gf3 b5+-) 21...Kf8 22.cb4 Qc2 23.Bc2 Bb2 24.Rb2 b5 (24...Bf3 25.gf3 Rd2+-) 25.Nd4 Ra6 (25...Bg4 26.Be4 Rac8 27.Nb5+-) 26.Bd3 Rb6 27.Ra1 Bg6 (27...Rd5 28.f3+-) 28.Bg6 (28.Bg6 fg6 29.Rc2+-) 1–0. Rayetzky – Coltharp, email CTON, 1996.

6.Qc2 Bd6 7.c4 ab4 8.cd5 =+.

6.Qc2 Nf6 7.Nf3 (7.c4 ab4 8.Be5 ba3 9.Na3 Ba3 10.Bb8 Qc5=+) 7...Nbd7 8.Be2 Bd6 9.a4 (better is 9.Nh4!?=+) 9...ab4-/+ 10.cb4 Qb4 11.Ba3 (11.0-0 e4 12.Nd4 0-0-/+) 11...Qe4 (better is 11...Qa4!? 12.Qc3 Ne4 13.Qc1-+) 12.Qe4-/+ Ne4 (12...de4?! 13.Bd6 ef3 14.Bf3=) 13.Bd6 Nd6 14.0-0 (14.d4 e4 15.Nfd2 b6-/+) 14...b5 (14...b6 15.d4 e4 16.Nfd2-+) 15.Rc1 (15.a5 Ra6-+) 15...Bb7 16.d4 e4 17.Nfd2-/+ Ke7 18.Nc3 b4 19.Nd1 Ba6 20.Kf1 Be2 21.Ke2 Ra6 22.Nb2 f5 23.Rc2 Nb5 24.Nb3 White intends a5 24...Nc3 25.Ke1 Rc8 26.a5 c5-+ 27.Nc5 Nc5 28.dc5 Rc5 29.Nd1 Rca5 30.Ra5 Ra5 31.Nc3 Rc5 32.Nd5-/+ Rd5 33.Rc7 Rd7 34.Rc5 b3 35.Rb5-/+ Rd3 36.Rf5 Kd6 37.Rb5 Kc6 38.Rb8=+ Kc5 39.Ke2 Kc4 40.f3 Kc3 41.fe4? Rd2-+ Black plans b2 42.Kf3 b2 43.Rc8 Kb3 44.e5 b1Q 45.Rb8 Kc2 46.Rb1 Kb1 47.Ke4 Rg2 48.e6 Ra2 49.Ke5 Ra8 50.e4 Kc2 51.Kd6 Kd3 52.e5 Ke4 53.e7 Kf5 54.e6?? Kf6 (55.h3 Ra6 56.Kd7 Ra7 57.Kd6 Re7-+) 0–1. Licciardello,Salvatore (2110) – Chatalbashev,Boris (2515), Giardini Naxos, 2001.

6.c4 Nd7 =.

6.d3 Nf6 7.Be2 Bd6 8.Nd2 Be6 9.Ngf3 0-0 10.0-0 Nbd7 11.Qc2 Rfe8 12.h3 Bf5 Black prepares e4 (12...Qc7 13.Ng5=+) 13.Nh4= Bg6 14.Ng6 hg6 15.Bf3 e4 (better 15...Qc7!?=) 16.de4+- de4 (16...Qc7 17.ed5 cd5 18.ba5+-) 17.Ne4 Ne4 18.Be4 Nf6 19.Bf3 Rad8 20.Rfd1 c5 (better 20...Qc7!?+-) 21.ba5+- Qa5 22.Bb7 Qb6 23.Bf3 1–0. Pereira – Techno, internet, 2020.

6.d4 e4 7.f3 f5 8.fe4 fe4 9.Qh5 Kd8 10.Nh3 (10.Ne2!?=+) 10...Nf6-/+ 11.Qh4 (11.Qe2!?-/+) 11...ab4-+ 12.ab4? (better 12.a4 bc3 13.Bc3-+) 12...Ra1 13.Ba1 Bb4! 14.cb4 (14.Be2!? Be7 15.0-0-/+) 14...Qb4-+ 15.Nd2 Qa3 16.Ng5 Qa1 17.Ke2 Rf8 (17...Bg4 18.Kf2 Ke8 19.Qg3-+) 18.h3 (18.Nh7 Rh8 19.Qg3 Rh7 (19...Nh7?! 20.Qb8 Qa3 21.h4-+) 20.Qb8 Qa3-+) 18...h6 19.Nh7 Rf7 20.g4 (20.Nf6 Rf6 21.Qe1 Qe1 22.Ke1-+) 20...b6 21.g5 (21.Bg2 Ba6 22.Kf2-+) 21...hg5 (better 21...Ba6 22.Kf2 Nh7 23.Kg2 Ng5-+) 22.Ng5 Ba6 (better 22...Re7!? 23.Bg2 Ba6 24.Kf2-+) 23.Kf2 Re7 24.Qh8 Kc7 (24...Ne8!? 25.Qh4 Nd6 26.Qg3-+) 25.Qf8 Rd7 (better 25...Re8 26.Qg7 Nbd7-+) 26.Ne6= Kb7 27.Ba6 Qa6 28.Rb1 (better 28.Nc5 bc5 29.Rb1 Qb5 30.Rb5 cb5 31.Qc5+/- (31.dc5?! Nc6=)) 28...Qd3?? (better 28...Ka8=+) 29.Nc5+- Kc7 30.Nd3 ed3 31.Qb4 b5 32.Qa5 (32.Qa5 Kb7 33.Qa3+-) 1-0. profesorul (2220) - jhonores (2180), Rated Blitz game, lichess.org, 2020.

6.Nf3 e4 7.Ne5 Nh6 8.Qh5 -/+.

6.Nf3 Bg4 7.Be2 (7.c4 Nd7 8.cd5 ab4 9.dc6 Qc6 10.ab4 Ra1 11.Ba1 Bb4=) 7...Bf3 (7...Nd7 8.d4 e4 9.Ne5 Be2 10.Qe2+=) 8.Bf3= e4 9.Be2 Nf6 10.d3 Bd6 11.Nd2 (11.de4 Ne4 12.Nd2 Nd2 13.Qd2+= (worse is 13.Kd2 0-0-/+)) 11...Nbd7 (better is 11...ed3!? 12.Bd3 Nbd7+=) 12.de4+= de4?? (12...0-0 13.ed5 cd5 14.0-0+/–) 13.Qc2 (better is 13.Nc4 Qc7 14.Nd6 Ke7 15.Nf5 Kf8 16.c4+-) 13...0-0+/– 14.Rd1 Ne5 (14...Qc7!? 15.Ne4 Ne4 16.Qe4 Nf6+/–) 15.Ne4 Ne4 16.Qe4 Qc7 17.g3 Rfe8 18.Qd4 (18.0-0!?+/–) 18...Rad8+= 19.c4?? (better is 19.Qh4+=) 19...Bb4!-+ 20.Kf1? Rd4 21.ed4 Ba3! 22.Ba3 Nd7 23.f4 b5! 24.cb5 cb5 25.Bb5 Qb7 26.Bd7 Qh1 27.Kf2 Qh2 28.Kf3 Qe2# 0–1. Buemi,F – Alaimo,Riccardo, Belpasso, 1992.

5.Qb3 Nf6 6.e3 c5 7.b5 a4 8.Qc2 d5 9.c4 Be7 10.d4 Nfd7?? (10...Nbd7 11.Nf3=) 11.Nc3?? (better 11.dc5 Qc5 12.Bg7+-) 11...dc4 12.Na4 (better 12.Rd1+=) 12...Ra4?? (better 12...Qa5 13.Nc3 cd4 14.ed4 Qc7=) 13.Qc1?? (better 13.Qa4 0-0 14.Qc4+-) 13...Na6! 14.h3?? (14.ba6 Qa5 Double attack (14...Qa5 Decoy)) 14…Nc7 0–1. RichardSommer (2155) – Confinat2510 (2235), lichess.org, 2020.

5.e3 d5 6.d4 Nf6 7.Bd3 (7.Nf3 c5=) 7...Nbd7 (7...c5 8.Nd2+=) 8.Nf3= Bd6 9.Nbd2 e5 (9...0-0 10.c4 Be7 11.0-0=) 10.de5 (better is 10.c4!? e4 11.c5+=) 10...Ne5= 11.Ne5 Be5 12.0-0 Bg4 13.Qc2 0-0 14.c4 Bb2 15.c5 Qc7 16.Qb2 b5 17.h3 Bh5 18.Qd4 Ra7 19.g4 (19.a4 ba4 20.ba5 Ra5 21.Ra4 Rfa8 22.Ra5 Ra5=) 19...Bg6+= 20.Bg6 hg6 21.g5 Nd7 22.f4 Rfa8 23.Nb3 ab4 24.ab4 Ra1 25.Ra1 Ra1 26.Qa1= f6 27.h4 f5? 28.Nd4 Nb8 29.Qa8+- Kh7 30.Kf2 Qc8 ½–½. Baer,Cy (1895) – Langschmidt,Dirk (2015), RSS7E easy–50, 2007.

5.e3 d5 6.Nf3 Nf6 7.Qc2 Nbd7 8.d4 Ne4 9.Bd3 f5 10.Nbd2 Be7 11.Nb3 ½–½. Kukel,Imre – Tornai,Imre, Budapest, 2000.

5.Nf3 c5 6.e3 (6.Qa4 Na6+=) 6...ab4 (6...d5 7.Qc2=) 7.ab4 (7.cb4 Nc6=) 7...Ra1 8.Ba1 cb4 9.Qb3 (9.cb4 Qb4 10.Nc3 d5=) 9...f6 (9...Na6 10.Na3=) 10.Be2 (10.c4 Ne7=) 10...Qa5 11.Bb2 Nc6 12.0-0 b5 13.Rc1 (13.cb4 Qb4 14.Qb4 Bb4 15.Nc3=) 13...bc3 (13...Bb7 14.cb4 Qb4 15.Qb4 Bb4 16.Bb5=) 14.Bc3 (b5 gets attention) (better is 14.Nc3!? b4 15.Ra1+=) 14...b4=+ 15.Bd4 (15.Bb2 Qd5 16.Qc2 Bb7=) 15...e5 (15...Bb7 16.Bb2=+) 16.Bb2= Bd6 (16...e4 17.Nd4 Bb7 18.d3 Nd4 19.Bd4=) 17.Nh4 (17.d4!?+=) 17...Nge7 18.Bf3 (better is 18.Bh5 g6 19.Bf3=+) 18...Qb5 (18...Bc7 19.d3=+) 19.d4 (better is 19.Nc3 Qb8 20.Ne4+=) 19...ed4-/+ 20.ed4 Nd4?? (better is 20...Na5 21.Qc2 0-0=+) 21.Bd4 (21...Qg5 22.Qe3+/–) 1–0. tschulz – Sanji, internet, 2005.

5.Nf3 d5 6.d3 =.

5.Qb3 e6 6.e3 Be7 7.b5 0-0 8.a4 d5 9.c4 c5 10.Nf3 Nbd7 11.Be2 Qc7 12.0-0 b6 13.Qd1 Bb7 14.d4 e5?? (14...dc4 15.Na3 cd4 16.Qd4 Bc5 17.Qc4 Rac8=) 15.de5+- (15.Ne5?! cd4 16.ed4 dc4 17.Nc4 Nd5+=) 15...Ne5? (better 15...Ng4 16.Nc3 Nge5 17.Ne5 Ne5 18.Nd5 Bd5 19.cd5 Rad8+-) 16.Ne5 (16.Be5 Qd7+-) 16...Bd6 (16...Rad8 17.Nd2+-) 17.Nf3 dc4 (17...Ng4 18.Qd2 Bh2 19.Kh1+-) 18.Bf6 Rad8 (18...gf6 19.Kh1 Be5+-) 19.Bd8 Rd8 20.Qc2 1–0. RichardSommer (1940) – JosephVonTrotta (1935), lichess.org, 2020.

5.Qc2 d5 6.d4 g6 7.Nd2 Bf5 (7...ab4 8.cb4 Bf5 9.Qc3=+) 8.Qc1 (8.Qa4 Ra7=+) 8...Bg7 9.Ngf3 Nbd7 10.Nh4 Be6 (10...Bg4 11.f3 Be6 12.e4=+) 11.e3= 0-0 (11...g5 12.Nhf3 g4 13.Ng5=+) 12.Bd3 Qc7 13.Nhf3 Bg4 14.h3 Bf3 15.Nf3 h6 16.0-0 b5 17.Qc2 (17.a4 ba4 18.Ra4 ab4 19.Ra8 Ra8 20.cb4 Qb7=) 17...a4 18.Rae1 e6 (18...Rad8 19.e4 de4 20.Be4 Ne4 21.Qe4=) 19.Nd2 Nh7 (19...e5 20.e4=) 20.e4 f5 21.e5 Ng5 22.Bc1 Nb6 23.f3 (23.Be2 Qe7+=) 23...Qe7 24.Kh2 Kf7 (24...Rad8 25.g4=) 25.f4 (25.h4 Nh7 26.g3 Kg8+=) 25...Ne4 26.Nf3 Ke8 27.Be3 (27.Rg1 Kf7=) 27...Kd7 (27...Kf7 28.Bf2=) 28.Be4 (28.Be2 Kc8=) 28...fe4= 29.Nd2 h5 (29...Kc8 30.Rc1=) 30.Qd1 Qf7 31.Qe2 Rh8 32.h4 Qf5 33.g3 (33.Rc1 Kc8=) 33...Bf8 (33...Ra7 34.Rc1=+) 34.Rg1 Be7 35.Ref1 Raf8 36.Re1 Kc7 37.Qg2 Rh7 38.Qe2 Qf7 (38...Kb8 39.Rgf1=+) 39.Ref1 Qe8 40.Re1 Rhf7 41.Ref1 Qd8 42.Kh3 Rh7 43.Qg2 (43.Kg2 Kb8=+) 43...Qe8 (43...Kb8 44.Qe2=+) 44.Qe2 Bd8 45.Qg2 (45.Kh2 Qf7=) 45...Nc8 (45...Qf7 46.Rc1=+) 46.Qe2 Ne7 47.Rh1 (47.c4 bc4 48.Nb1 Nf5=+) 47...Nf5 48.Rfg1 Be7 49.Nf1 (49.Rc1 Rhf7=+) 49...Rg8 (49...Rhf7 50.Kg2=+) 50.Bd2 Kb8 51.Ne3 Qd8 52.Nf5 (52.Kg2!?=+) 52...gf5-/+ (worse 52...ef5 53.Kg2=+) 53.Be3 Rg4 54.Bf2 Rhg7 55.Qe3 (55.Re1 Qg8 56.Qe3 Qf7-/+) 55...Rg8 (55...Qe8 56.Kg2 Bh4 57.Kf1-/+) 56.Qe1 (better 56.Rf1-/+) 56...R8g7 (56...Qe8 57.Be3-/+) 57.Qe3-/+ Qe8 58.Qe1 (58.Kg2!?-/+) 58...Qg6-+ 59.Qe2 (59.Qf1 e3 60.Be1 Bh4-+) 59...Qh6 (better 59...Bh4 60.Qe3 Be7-+) 60.Be3-/+ R4g6 61.Qf2 Rg8 62.Qe1 Qg7 63.Qf2 Qf7 (63...Rg4 64.Kh2-/+) 64.Qe1 (64.Kg2 Rg4 65.Kh3 Qg6-/+) 64...Bd8 65.Bf2 Rg4 66.Qe3 (better 66.Be3-+) 66...Qg7 67.Qe1 (67.Kg2 Bh4 68.Rh3 Bg3 69.Rg3 Rg3 70.Bg3 h4-+) 67...Be7 (67...Bh4 68.Qe3-+) 68.Qe3 (68.Qf1 e3 69.Be1 Bh4-+) 68...Qh8 (better 68...Bh4!? 69.Be1-+) 69.Qe1 Bf8 (69...Qh6!? 70.Be3-+) 70.Qe3 Bh6 71.Qe1 Qg7 72.Qe3? (72.Be3 Qg6-+) 72...Qf7 (better 72...Kc7!?-+) 73.Qe1-/+ Qg6 74.Be3 Bf8 75.Bf2 (75.Qf2 Rg7-/+) 75...Be7 76.Qe3 (76.Qf1 e3 77.Be1 Bh4-+) 76...Kc7 (76...Bh4 77.Be1-+) 77.Qe1 (77.c4 bc4 78.Qe1 Kc8-+) 77...Bh4 78.gh4 (78.Qe3-+) 78...Rg2 79.Qe2 (79.Bg3 Qg3 80.Qg3 R8g3) 0–1. Ivanov,Daniel (1755) – Asparuhov,Parvan (2115), Kesarovski Georgiev Memorial 7th, 2008.

5.Qc2 d5 6.e3 g6 7.Nf3 Bf5 (7...Bg7 8.d4+=) 8.d3 Bg7 9.Nd4 (9.Nbd2 0-0+=) 9...Bc8 (9...Bd7 10.Nb3+=) 10.Nd2 0-0 11.Rb1 (11.Be2 ab4 12.cb4 Na6=) 11...Re8+= 12.Be2 e5 13.N4b3 a4 14.Nc5 Qa7 15.Bd1 Nbd7 16.Nd7 Bd7 17.0-0 b5 18.Rc1 (18.Bf3 Rad8+=) 18...e4-/+ 19.d4 (19.Be2 Bf5-/+) 19...Qc7 20.h3 Qc8 21.Kh2 Bf8 22.Rh1 (22.Kg1 Qc7-/+) 22...Bd6 23.Kg1 Rf8 24.Be2 Ne8 25.Rf1 Ng7 26.Qd1 f5 (26...Qc7 27.Qc2-+) 27.Bc1 (27.g3!?-/+) 27...Qd8-+ 28.h4 Qc7 (28...f4 29.ef4 Rf4 30.g3-+) 29.Re1 (29.h5 Ne6-/+) 29...Rf7 30.Nf1 Raf8 31.g3 h6 32.f4? (better is 32.Bb2-/+) 32...ef3!-+ 33.Bf3 Bg3 34.Re2 f4 35.e4 de4 36.Re4 Nf5 37.h5 g5 38.Re5 Re8 39.Re8 Be8 40.Qd3 Bd7 41.Nd2 (41.Bg4 Qc8 42.Bf3 Be1-+) 41...Nh4 42.Be4 Re7 43.Nf3 (43.Nf1 Qd6 44.Nd2-+) 43...Nf3 44.Bf3 g4 45.Bd1 (45.Bg2 Re1 46.Bf1 Qd6-+) 45...Re1 46.Kg2 f3 47.Bf3 gf3 48.Qf3 Rh1 49.Kh1 Be6 50.Qf6 (50.Kg1 Bd5 51.Qg4 Qg7 52.Qg7 Kg7 53.Kf1-+) 50...Bd5 51.Kg1 Bh2 52.Kf1 Bc4 0–1. Raudsepp,Teet – Soskov,Vjatsheslav (2285), Viljandi EST, Ilmar Raud Mem, 2014.

5.Qc2 e5 6.ba5 Qa5 7.c4 d6 8.Bc3 Qc7 9.Nf3 Be7 10.Ng5 h6 11.Nf3 0-0 12.h3 Be6 13.g4 (13.e4!?=+) 13...Bc4-/+ 14.g5 hg5 15.Ng5 Nbd7 16.h4 d5 Black prepares e4 17.h5 e4 18.h6 (18.d3 ed3 19.ed3-/+) 18...g6 (better 18...gh6!? 19.d3 hg5 20.dc4 e3 21.cd5 ef2 22.Kf2 Ng4 23.Ke1 Qg3 24.Kd2 Qf4 25.Ke1 Qf2 26.Kd2 Ndf6-+) 19.h7 Kh8 20.d3 ed3 21.ed3 Bb5 22.a4 Ba6 23.Nd2 Qf4 24.Ndf3 c5 Black prepares the advance d4 25.Rh4 Qf5?? (better 25...Qd6=+) 26.Bh3+- Qd3 27.Qd3 Bd3 28.Bd7 d4 29.Nd4 cd4 30.Rd4 Ba6? (better 30...Bf5 31.Bf5 gf5+-) 31.Rf4 Kg7 32.Ne4 Rad8 (32...g5 33.Rf6 Bf6 34.Nf6 Bd3+-) 33.Nf6 (33.Nf6 g5 34.Rf3 Bf6 35.Bf6 Kh7 36.Bd8 Rd8 37.Rf7 Kg6 38.Re7+-; worse 33.Bf6 Bf6 34.Nf6 Rh8+-) 1–0. beatmeeasy (1960) – nixalsverdruss (1960), lichess.org, 2020.

5.Qc2 g6 6.e3 Bg7 7.Nf3 d6 (7...d5 8.d3=+) 8.Be2 0-0 9.d4 (9.0-0 Bf5 10.d3 ab4 11.ab4 Ra1 12.Ba1 Nbd7=) 9...Bf5-/+ 10.Bd3 Bd3 11.Qd3 c5 12.b5 (12.Nbd2 ab4 13.dc5 dc5 14.cb4 cb4-/+) 12...Nbd7 (12...d5 13.a4=+) 13.a4=+ e5 14.e4? (better 14.Nbd2!?=+) 14...ed4 15.cd4 Ne4! 16.0-0 (16.Qe4 Rae8 Pinning (16...Rae8 Decoy)) 16...Rfe8 17.Re1 (17.Nc3 Nc3 18.Bc3 d5-/+) 17...d5-+ 18.Nbd2 (18.Nc3 c4 19.Qc2 Nc3 20.Bc3 Nf6-+) 18...Nd2 (18...c4!? 19.Qe3-+) 19.Qd2-/+ cd4 20.Nd4 (20.Rac1 Re4 21.Re4 de4 22.Bd4 Bd4 23.Qd4 A) 23...ef3?! 24.Qd7 Qf6 25.Qd5=+ (25.Qb7?? Qg5 26.Rc8 Kg7-+); B) 23...Qd4 24.Nd4 Nb6-+) 20...Nc5-+ 21.Re8 (21.Rec1 Be5-+) 21...Re8 22.Nf3?? (better 22.Qc2-+) 22...Nb3 23.Qd1 Na1 (23...Bb2?! 24.Rb1-+) 24.Ba1 (24.Bg7 Kg7 25.Qa1 Qf6 26.Qd1-+) 24...Ba1 25.Qa1 Re2 26.Qf1 Rc2 (better 26...Ra2 27.g3 Ra4-+) 27.Qe1 (27.g3 Qc5 28.Kg2 Qc4-+) 27...Qe6 (better 27...Qc5 28.Qe8 Kg7 29.Qe5 f6 30.Qe3 Rc1 31.Ne1 Qe3 32.fe3 Re1 33.Kf2-+) 28.Kf1 (28.g3 Qe1 29.Ne1 Ra2-+) 28...Qe1 29.Ne1 (29.Ke1 Rc4-+) 29...Ra2 30.Nd3 (30.h3 Ra4 31.Ke2 Ra2 32.Kd3 a4-+) 30...Ra4 31.Nc5 (31.Ke1 Rc4 32.Nb2 Rb4-+) 31...Rb4 32.Nb7 (32.Nd7 Kg7 33.Nc5 a4 34.Na4 Ra4-+) 32...Rb5 (32...a4 33.g3-+) 33.Nd6 (33.Na5 Ra5 34.Ke2-+) 33...Rb6 34.Nc8 Rb2 35.Ne7 Kg7 36.Nd5 a4 37.Nc3 a3 38.Na4 Rb1 39.Ke2 a2 40.Nc3 a1Q (40...Rb2 41.Kf3 a1Q 42.Ne4-+) 41.Nb1 Qb1 42.h3 f5 43.g3 Kf6 44.Kf3 Qe4 0–1. Aria,Kamos – Yefimov,Mstislav, Derbenev Open A, 2010.

5.d3 Na6 6.Qc2 Nc7 7.Nf3 g6 8.e3 Bg7 9.Be2 d5 10.Nbd2 Bd7 11.0-0 0-0 12.Rfc1 Rfe8 13.Nb3 e5 14.Nc5 (14.ba5 Qa7+=) 14...Ne6 (14...Bf5 15.e4 Bg4 16.Nb3=) 15.Nd7 (15.Ne5!? Nc5 A) 16.Nd7? Ncd7 (worse 16...Nfd7 17.bc5 Nc5 18.Rab1+=) 17.Rcb1 Qc7-+; B) 16.bc5 Qc5 17.Nd7 Nd7 18.d4+=) 15...Nd7= 16.d4 ed4 17.cd4 Nf6 (17...ab4!? 18.ab4 Qb4=+) 18.Rab1 (18.Bc3!?+=) 18…Ne4 0–1. alessandrocarvalhaes (1925) – Iobharsantoss (1930), lichess.org, 2020.

5.e3 ab4 6.cb4 d6 7.Bd4 Qc7 8.Bb2 (8.Bf6 ef6 9.d4 d5=) 8...g6 (8...e5 9.Nf3=+) 9.Bf6= ef6 10.Nf3 Bg7 (10...d5 11.Nc3=) 11.Nc3 (11.d4 0-0=) 11...0-0 12.Be2 f5 13.0-0 Qe7 (13...Re8 14.d4=) 14.h3 (14.d4 Re8=) 14...Be6 (14...f4 15.e4=) 15.Nd4 (15.d4 Re8=) 15...Bd4 (15...Nd7 16.Ne6 fe6 17.d4=) 16.ed4 d5 17.Qc2 (17.Na4 Qh4=+) 17...Qf6 18.Na4 (18.b5 Qd4 19.bc6 Nc6=+) 18...Qd4 19.Nc5 Ra7 (19...b6 20.Nb3 Qe4 21.d3=+) 20.Nb3 Qf4 (20...Qf6 21.d4=+) 21.Qc5 Ra8 22.Qb6 Bc8 23.Qe3 Qe3 (23...Qe4 24.Rfe1=+) 24.fe3 Nd7 (24...Re8 25.a4=+) 25.Nd4 (25.a4 Re8=+) 25...Nf6 (25...Re8 26.a4=+) 26.Bf3 (26.a4 Ne4 27.d3 Nc3=+) 26...Ne4 27.d3 Nf6 (27...Ng5 28.a4=+) 28.Rfc1 (28.Kf2 g5=+) 28...Bd7 (28...Re8 29.Kf2=+) 29.a4 Rfc8 (29...g5 30.Be2=+) 30.Kf2 (30.Nb3 Ra7=+) 30...Ra7 31.Rc2 (31.a5 Rca8=+) 31...Rca8 32.a5 Kg7 33.Nb3 Be6 (33...g5 34.Nc5=+) 34.Nd4 h6 35.Kg3 (35.Rac1 Nd7=+) 35...Bd7 (35...Nd7 36.Kf2=+) 36.Kf2 Re8 (36...g5 37.Rh1=+) 37.g3 (37.Rc5 g5=) 37...Rea8 (37...g5 38.Bg2=+) 38.Nb3. Marcus – 7518, internet, 2018.

5.e3 c5 6.b5 d5 7.a4 (7.c4 Bg4 8.Be2 Be2 9.Qe2 dc4 10.Qc4 Nbd7=) 7...Bf5 (7...e5 8.c4 d4 9.ed4 ed4 10.Nf3=+) 8.Nf3 (8.c4 Nbd7=) 8...e6 9.Nh4 Be4 10.d3 Bg6 11.Ng6 hg6 12.Be2 Bd6 13.h3 Nbd7 14.Nd2 Rc8 15.e4 Rh4 16.Nf3 Rh5 17.ed5 Nd5 18.0-0 Nf4 19.d4 (19.Bc1 Rd8=) 19...c4 (19...cd4 20.cd4 Qd8 21.Ba3=) 20.Bc1 Nf6 (20...Ne2 21.Qe2 Nf6 22.Ba3+=) 21.Bf4+= Bf4 22.Ne5 Be5 23.Bh5 (worse 23.de5 Re5 24.Qc2 Nd5=+) 23...Bd4 24.Qd4 (better 24.cd4!? gh5 25.Rc1+=) 24...Qd4=+ 25.cd4 Nh5 (25...gh5 26.Rfc1=+) 26.Rac1 (26.Rfc1!?=) 26...c3 27.Rfd1 Nf4 28.Kh2 Rc4 29.g3 Nd5 30.Rc2? (better 30.Ra1!?-/+) 30...Ra4-+ 31.Rd3 Nb4 (31...Rb4 32.Rdc3 Nc3 33.Rc3 Rb5 34.Rc8 Ke7 35.Ra8-+) 32.Rcc3 Nd3 33.Rd3 Rb4 34.d5 Rb5 (34...e5 35.b6-+) 35.de6 fe6 36.h4 0–1. Abdullaevich (1935) – CELATADEHOJALATA (2000), lichess.org, 2019.

5.f3 g6 6.e4 d6 7.d4 Bg7 (7...ab4 8.ab4 Ra1 9.Ba1-/+) 8.Bc4 Qc7 9.Ne2 0-0 10.Bb3 Nbd7 11.0-0 e5 12.Nd2 b6 13.de5 (13.Qc2 Bb7=) 13...de5 14.c4 ab4 15.ab4 Ra1 16.Qa1 Re8 17.Rd1 h5 18.Nf1 h4 19.Ne3 Nh5 20.Ng4 Nf8 21.c5 b5? (better 21...bc5 22.Qa5 Qb7 23.Qc5 Bg4 24.fg4 Nf6=) 22.Rd6+- Be6 23.Be6 Ne6? (23...Re6 24.Re6 Ne6 25.Be5 Be5 26.Qe5 Qd7+-) 24.Ne5 (24.Be5 Be5 25.Ne5 Qe7 26.Nc6 Qg5+-) 24...Qb7 (24...h3 25.Rc6 (25.Nc6?! Bf8 26.Re6 fe6+/-) 25...Qe7 A) 26.gh3 Ng5 27.h4 Be5 28.hg5 Qg5 29.Kf1 Nf4 30.Nf4 Qf4 31.Be5 Qf3 32.Kg1 Qe3 (32...Qe4?! 33.Bh8 Qg4 34.Kh1 Qf3 35.Kg1 Qg4 36.Kh1 Qf3 37.Kg1 Qg4=) 33.Kf1 Qe4 34.Rg6 Qg6-+; B) 26.Ng4+-) 25.Nc6 Ra8 26.Qb1 (26.Na5 Qc7 27.Bg7 Nhg7+-) 26...Bb2? (better 26...Bf8 27.Re6! fe6+-) 27.Qb2 Nhf4 (27...Ng5+-) 28.Nf4 Nf4 29.h3 (better 29.Qf6 Ne2 30.Kf2 Nf4+-) 29...Qc7 (29...Nh5+-) 30.Qf6 Ne6 (30...Nh3 31.Kh2 Nf4 32.Qf4+-) 31.Re6 (better 31.Ne7 Qe7 32.Qe7 g5+-) 31...fe6 (31...Ra1 32.Qa1 fe6+-) 32.Qg6 (better 32.Ne7 Qe7 33.Qe7 Ra1 34.Kh2+-) 32...Qg7 33.Qe6 Qf7?? (33...Kh8 34.Na5 Qa1 35.Kh2 Qg7+-) 34.Qg4 (34.Ne7 Kf8 35.Qh6 Qg7 36.Qf4 Qf7 37.Qh4 Ra1 38.Kh2 Ra6+-) 34...Kf8 (34...Qg7 35.Ne7 Kh7 36.Qh4 Qh6 37.Qg4+-) 35.Qh4 Ra1 (35...Qg7 36.e5 Kg8 37.Qd4+-) 36.Kh2 Qc7 (36...Rd1 37.Nd4! Kg8 38.Nb5 Qg6+-) 37.Qg3 (37.f4 Qc6 38.Qh8 Kf7 39.Qa1 Qe4+-) 37...Qg3 (better 37...Rh1! 38.Kh1 Qg3-+) 38.Kg3+- Rb1 (38...Ra6 39.Nd4 Ra4 40.c6+-) 39.Kf4 Ke8 40.Ke5 Kd7 41.Nd4 (better 41.Kd5 Ke8 42.f4+-) 41...Rb4 42.Nb5 Rb5 43.Kd5 Rb2 44.e5 (44.g4 Rf2 45.c6 Ke7=) 44...Rg2 (44...Rd2 45.Ke4 Rg2 46.f4-/+) 45.f4? (45.c6 Kc7 46.f4 Rf2-/+) 45...Kc7?? (better 45...Rd2 46.Ke4 Kc6-/+) 46.f5= Rh2 47.f6 Rf2?? (better 47...Rh3 48.f7 Rf3=) 48.Ke6+- Kc6 49.h4 Kc5 50.Ke7 (better 50.f7 Rf3 51.h5+-) 50...Kd4?? (better 50...Kd5=) 51.e6+- White prepares the advance f7 51...Ke5 52.f7 1-0. Giorgio_C (2150) - igo1 (2240), Rated Bullet game, lichess.org, 2015.

5.Nf3 ab4 6.cb4 d5 7.d4 (7.Bd4 Qd8=) 7...Bf5 8.e3 Nbd7 9.Be2 e6 10.0-0 Bd6 11.Nbd2 0-0 (11...Qc7 12.h3=) 12.Nb3 (12.Nh4 Be4=) 12...h6 13.Nh4 Bh7 14.Bd3 (14.Nf3 Qc7=+) 14...Bd3 15.Qd3 e5 (15...Qc7 16.Nf3=+) 16.de5= Be5 17.Nd4 (17.Bd4 Bd4 18.ed4 Rfe8=) 17...Ne4 (17...c5 18.f4 Bd4 19.ed4=+) 18.Nhf5 Ndf6 (18...Rfe8 19.f3 Nd6 20.Nd6 Bd6 21.Nf5=) 19.f3= Nd6 (better 19...c5=) 20.h4?? (20.f4 Bd4 21.Bd4+/- (worse 21.Nd4 Rfe8-/+; worse 21.ed4 Nc4 22.Rf2 Rae8=+)) 20...Nf5-/+ 21.Nf5?? (better 21.Qf5 Rfe8 22.Rac1-/+) 21...Bb2-+ 22.Ra2 Ba3! 23.g4?? (23.Ra3 Ra3 Combination) 23...Bb4-+ 24.Ra8 Ra8 25.g5 (25.Rb1 Qc5-+) 25...hg5 26.hg5 Nh7 27.Kh2 (27.f4 Ra3 28.Qd4 Qd4 29.ed4 Bc3-+) 27...Ng5 (better 27...Ra2 28.Kg3 Qc7 29.f4 Ng5-+) 28.Rg1 (28.Kg2-+) 28...Nf3 29.Kh3 Ng1 30.Kh4 Ra4 31.Kh5 c5 (better 31...g6 32.Kg4 Be1 33.e4 gf5 34.Kf5 Qf2 35.Kg5 Qg2 36.Kf4 Bh4 37.Ke5 Qg5 38.Kd6 Qe7) 32.e4 Qg6 33.Kh4 Qf6 (33...Be1 34.Ng3 Re4 35.Qe4 Bg3) 34.Kg3 de4 (34...Qg5 35.Kf2 Ra2 36.Qc2 Rc2 37.Kf1 Qc1) 35.Qe4 Be1 36.Kg2 Re4 37.Ng3 (37.Kg1 Qf5 38.Kh1 Qf1 39.Kh2 Re2) 37...Qg5 (37...Qf2 38.Kh1 Rh4) 38.Kf1 Rf4 (38...Qf4 39.Kg1 Qg3 40.Kf1 Qf2) 39.Kg2 (39.Ke1 Qg3 40.Kd2 Rf2 41.Kc1 Qe3 42.Kd1 Qd2) 39...Qg3 40.Kh1 Rh4 0-1. nicky (2200) - sezwho (2060), Rated Bullet game, lichess.org, 2013.

5.Nf3 Nc6 6.e3 e6 7.b5 Ne7 8.c4 Neg8 9.d4 a6 10.a4 d5 11.Nc3 Bd6 12.a5 Qd8 13.b6 cd4 14.Nd4 Bb4 15.Qa4 Bd7 16.Qb4 Ne7 17.Ba3 Nc8 18.Bd3 e5 19.Nf5 Bf5 20.Bf5 d4 21.Qa4 Nd7 22.Nd5 Ncb6 23.Nb6 1–0. Kucharkowski – Ehrlich, Freital 1988.

5.Nf3 Qd8 6.c4 ab4 7.ab4 Na6 8.b5 cb5 9.cb5 Nc7 10.Ra8 Na8 11.Bf6 ef6 12.Qb3 Bc5 13.e3 0-0 14.d4 Bd6 15.Bc4 Nb6 16.Bd3 Re8 17.Qc2 Bf4 (Better is 17...Bb4!? 18.Nbd2 g6+=) 18.Bh7 Kf8 19.0-0 Bd6 20.Nh4 Nd5 (20...f5 21.g3 g6 22.Ng6 Kg7 23.Ne5 Be5 24.de5 Kh7 25.Qf5 Kg7 26.Qg4 Kf8 27.Qb4 Kg8 28.Qf4=) 21.Nd2 Qe7? 22.Nf5 Qe6 23.Nc4 Bb4 24.Ng3 Qg4? 25.Bf5 Qg5 26.Ra1 Kg8 27.Ra8 Bc3?? 28.Nd6 Ne3 29.fe3 Qe3 30.Qf2 Bd4 31.Qe3 Be3 32.Kf1 Re7 33.Rc8 Re8 34.Re8# 1–0. guest1 – babylyub, ICS unrated blitz match, 1998.

6.Nd2 c5 7.Rb1 (7.Ngf3 Nbd7= 8.e4 ab4 9.ab4 Ra1 10.Qa1 cb4 11.Qa8 Qc7 12.cb4 e5 13.Ne5 Bb4= –0.06) 7...ab4 (7...cb4 8.ab4 (8.cb4 ab4 9.ab4 e6 10.e3 Bd6 11.Ngf3 Nbd7 12.e4 e5 13.ed5 0-0-/+ –0.91) 8...ab4 9.cb4 e6 10.e3 Bd7 11.Bd4 Qd8 12.Bc5 Bb5 13.Ngf3 Nc6= –0.25) 8.cb4 (8.ab4 cb4 9.c4 d4 10.Ngf3 Nc6 11.Nb3 e5 12.Bc1 Ra2 13.e4 Be7-/+ –0.94) 8...cb4 9.ab4 e6 10.Bc3 (10.e3 Bd6=+ (worse 10...Bb4 11.Bc3+- Nc6 12.Bb4 Nb4 13.Qb3 Nd3+- 1.25; 10...Qd8 11.b5 Bd6 12.Ngf3 Nbd7 13.Be2 0-0= –0.16) 11.Ngf3 Nbd7 12.b5 0-0 13.Bd4 Qd8=+ –0.63) 10...Bd6 (10...d4 11.Nc4 Qd8 12.Bd2-/+ b5 13.Ne5 Bd6=+ –0.69) 11.Qb3 (better 11.Ngf3=+ Bd7 12.e4 Nc6 13.e5 Ng4= 0.03) 11...d4 (better 11...e5 12.Ngf3 Nc6=+ (12...Qc7 13.e3 0-0=+ –0.53) 13.b5 Na5=+ –0.63) 12.Nc4+= Qb5?? (12...Qc7 13.Bd4 Nbd7+= (13...Bh2?? 14.Bb6 Qe7 15.Rh2+-); 12...Qd8 13.Bd4 Bc7+= 0.62) 13.Bd2 (better 13.Nd6 Ke7 14.Nb5 dc3+-) 13...Nd5?? (better 13...Be7=+) 14.Nf3 (14.Nd6 Ke7 15.Nb5 Rd8 16.Nd4 Kf8+-) 14...Nb4?? (better 14...Bc7 15.Nd4 Qd7+-) 15.e3 (better 15.Nd6 Kf8 16.Nb5+-) 15...Qd5 (15...Be7 16.Nd4 Qc5 17.Bb4 Qb4 18.Qb4 Bb4 19.Rb4 Ke7+-) 16.Be2 (16.Nd6 Qd6 17.Bb4 Qd7+-) 16...b5?? (better 16...N4c6=) 17.Nb6 (better 17.Nd6 Qd6 18.Bb4+- (18.Qb4?! Qb4 19.Rb4 de3 20.fe3 Ra1 21.Bd1 Bd7+-)) 17...Qb3-/+ 18.Rb3 Ra1 19.Bd1 Bb7?? (better 19...Nc2! 20.Ke2 Ba6-/+) 20.ed4?? (better 20.Bb4 Bc7 21.Bc5 de3 22.fe3+-) 20…Nc2 (20...Nc2 21.Ke2 Bf3 22.Kf3 Nd4 23.Kg4 Nb3-+) 0–1. Valenta,Vit (2195) – Dumitrescu,Dragos (2345), Open Marianske Lazne (7), 2003.

6.Nd2 e5 7.e4 Be6 8.Rb1 (8.Ngf3 Bd6=+) 8...ab4-/+ 9.cb4 Nbd7 (9...d4 10.f4 Ng4 11.Ngf3=+) 10.Ngf3=+ h6 (10...d4 11.Ng5=+) 11.Be2 (11.ed5 Ng4 12.d4 cd5=) 11...Bd6=+ 12.0-0 0-0 13.Qc2 (13.d4 Qc7 14.de5 Ne5 15.ed5 Bd5=+ (< 15...cd5 16.Rc1 Nc4 17.Bf6 gf6 18.Nd4+=)) 13...Qc7 14.h3 (14.ed5 Bd5 15.Ne4 Rfe8=+) 14...Nh5 (14...d4 15.Rfc1=+) 15.d4 Nf4 16.Bd1 (16.Rfe1 f6=) 16...f5=+ 17.de5 Ne5 18.Ne5 Be5 19.ed5 Bd5 20.Bf3 Bb2 21.Qb2 (21.Bd5 Nd5 22.Qb2 Ra4=) 21...Rfd8 22.Rfd1 Qf7 23.Qe5 Ng6 24.Qc3 Nh4 25.Re1 Qg6=+ 26.g3 Nf3 27.Nf3 Be4 28.Nh4 Qh5-/+ 29.Ra1 Kh7 30.Kh2 Rd3 31.Qe5-/+ Re8 32.Qb2 Red8 33.Qe5 R8d5 34.Qc7 Rd7 35.Qe5 R3d5 36.Qc3 Rd2 37.Qc5? Rc2 38.Qe5 Rd5 39.Qf4 Rdd2 40.Rf1 Qf7 41.Ng2-/+ g5 42.Qe3 Rd3 43.Qb6 f4 44.g4 Bg2 45.Kg2-/+ Qd5 46.Kh2 Qf3 47.Qb7 Kg6 (48.Qc6 Rc6-+) 0–1. Valenta,Vit (2230) – Vavrak,Peter (2410), Open Tatry, 2002.

6.Nd2 e5 7.Ngf3 Bd6 8.e3 =+.

6.Nf3 Nbd7 =+.

6.Nf3 Bf5 7.Qc1 (7.Nbd2 e6=) 7...Ng4 (7...e6 8.Nh4=+) 8.e3= Nd7 (8...Qc7 9.c4=) 9.Be2 (9.Nh4 Nh6=) 9...e5=+ 10.0-0 (10.Qd1 Ngf6=+) 10...Be7 (10...Bd6 11.Nbd2=+) 11.h3= Ngf6 12.Nbd2 (12.c4 Qc7=) 12...0-0 13.Nb3 (13.c4 ab4 14.ab4 Ra1 15.Ba1 e4=) 13...a4 (13...ab4 14.cb4 Bd6 15.Qc2=+) 14.Nbd2= Bd6 (14...Rfd8 15.c4 Qc7 16.Qc3=) 15.c4 Qa7 (15...Bc7 16.d4 e4 17.Ne5=) 16.e4 de4 17.de4 Ne4 (better 17...Be4 18.Ne4 Ne4=) 18.Ne4+- Be4 19.Rd1 (19.Rd1 Qb8 20.c5+-) 1–0. Grund,Karl – Poschmann,Hans, corr, 1981.

6.Nd2 Bf5 7.e3 e6 8.Ngf3 h6 (8...Be7 9.Be2=) 9.c4= ab4 10.c5 Qc7 11.ab4 Ra1 12.Qa1 Be7 13.b5 0-0 (13...b6!?=) 14.b6+= Qc8 15.Be2 Nbd7 16.0-0 Ne4 17.Ne4 Be4 18.Nd2 Bg6 19.Qa7 e5 20.Nb3 ed4 21.ed4 (21.Bd4 Re8+=) 21...Bf6 22.Bg4 Bd3 23.Re1 Ba6 (23...Re8 24.Qa1=) 24.Na5 (24.Bc1!?+=) 24...Re8= 25.Ra1 Re7 26.h3 Qe8? (better 26...h5!? 27.Bf5 g6 28.Bd7 Qd7 29.Qb8 Kg7=) 27.Nb7+/- Re1? (better 27...Bb7 28.Qb7 Nc5+-) 28.Kh2+- Ra1 29.Ba1 (29.Nd6 Qe1 30.Ba1 Bg5 31.Qa8 Nf8-+) 29...Bb7 30.Qb7 Nc5 31.dc5 Ba1 32.Qc7 (32.Qc8 Qc8 33.Bc8 Bd4+-) 32...Be5 33.f4 Bc7 34.bc7 Qe3? (better 34...d4+-) 35.c8Q Kh7 36.Qf5 (better 36.Qc7!? Kg8 37.Qb8 Kh7+-) 36...Kg8 37.Qc8 Kh7 38.Qc7 (38.Qc6?! Qf4 39.Kg1 Qc1 40.Kf2 Qb2 41.Be2 Qd4 42.Ke1 Qg1 43.Kd2 Qg2+-) 38...Qc5 (38...Kg8 39.Qd6 d4+-) 39.Bf5 (39.Qf7 Qc2 40.Bf5 Qf5 41.Qf5 Kg8 42.g4 g5 43.Qe6 Kh8 44.Qe8 Kg7 45.Qe7 Kg8 46.f5 c5 47.f6 c4 48.Qg7) 39...g6 (39...Kg8 40.Qd8 Qf8 41.Bh7 Kh7 42.Qf8 f6+-) 40.Qf7 Kh8 41.Qf6 (41.Be6 Qg1 42.Kg1 c5 43.Qg8) 41...Kg8 42.Be6 Kh7 43.Qf7 Kh8 44.Qg8 1-0. Nakamura,Hikaru (2735) - Mezentsev,Iv (2350), Titled Tuesday, 2021.

6.Nd2 Bf5 7.Ngf3 Nbd7 8.Nh4 Bg4 9.Qc2 e6 10.h3 Bh5 11.e3 Be7 12.Bd3 0-0 13.0-0 Ne4 14.Nhf3 (< 14.Ne4 de4 (< 14...Bh4 15.Nc5 Nf6 16.ba5 Ra5 17.c4+=) 15.Be4 Bh4 16.Bh7 Kh8-/+; < 14.Be4 de4 15.Qe4 Qd8+=) 14...f5 15.Rfb1 (15.Ne4? fe4 (15...de4?! 16.Bc4=) 16.Be4 de4 17.Qe4 Rf6-+) 15...ab4 16.cb4 Kh8 17.Bc3 (17.Ne4? fe4 18.Be4 de4 19.Qe4 Bf3 20.Qe6 Qd8 21.gf3 Nb6-+) 17...Rg8 (18.a4 Qc7=) =. Andronache,Daniel – Burijovich,Liliana (1815), internet Section, 2003.

6.e3 Bf5 7.Nf3 Nbd7 8.Nh4 Bg6 9.Ng6 hg6 10.Nd2 e5 11.de5 Ne5 12.Be2 Bd6 13.Nb3 a4 14.Nd4 Qc7 15.f4 Ned7 16.c4 0-0 17.cd5 Nd5 18.Nb5 cb5 19.Qd5 Rad8 20.Bb5 Nf6 21.Qf3 Nd5 22.Ba4 Nc3 23.Rc1 Bb4 24.ab4 Rd3 25.Bb5 Qb6 1–0. Machete99 – guest262, ICC, 2002.

7.e3 ab4 8.ab4 (8.de5 ba3 9.Ba3 Ba3 10.ef6 gf6 11.Qc2 Ra7 12.Ngf3 Bd6 13.Rb1 Qa5+=) 8...Ra1 9.Qa1 ed4 (9...e4 10.Qa5 Qa5 11.ba5 Bd6 12.Ne2 Be6 13.Nf4 Bf5=) 10.ed4 Bd6 11.Be2 (11.Qa5 Qd8 12.Qd8 Kd8 13.Bd3 b6+=) 11...Qd8 (11...Kd8 12.Ngf3 Re8 13.Qd1 Nh5=) 12.Ngf3 0-0 13.0-0 Bf5 +=.

7.e3 ed4 8.ed4 ab4 9.ab4 Ra1 10.Qa1 Bd6 11.Bd3 (11.Qa5 Qd8 12.Qd8 Kd8 13.Bd3 Re8+=) 11...0-0 (11...Qc7 12.Ne2 (12.h3 0-0 13.Ne2 Re8+=) 12...0-0 13.h3 Re8+=) 12.Ne2 (12.Qa5 Re8 (12...Nbd7 13.Ne2 Qd8=) 13.Kf1 (13.Ne2 Qa5=) 13...Nbd7=) 12...Bg4 (12...Qc7 13.h3+= Re8+=) 13.0-0 (13.Qa5 Qa5=) 13...Nbd7 (13...Qc7= –0.22) 14.f3 Bh5 15.Re1 Qc7 16.Nf1 Nb6 (16...Bg6 17.Nc1+=) 17.Neg3 Bg6 18.Nf5 Ra8 19.Qc1 (19.Qb1 Bf5 20.Bf5 Na4=) 19...Nc4 20.Nd6 Bd3 21.Nc4 dc4 22.Qe3 h6 23.Ng3 (23.Qf2 Ra2 24.Ne3 b6+=) 23...Nd5 24.Qd2 (24.Qc1 Ra2 25.Re8 Kh7-/+) 24...Ra2 25.Ra1 Ra1 26.Ba1 Qe7 27.Kf2 Kh7 28.Bb2 b5 29.Nf1 '?' Qh4 '-+' 30.Kg1 Bf1 31.Kf1 Qh2 32.Bc1 Qh1 33.Kf2 Qh4 34.Kg1 Qf6 35.Qe2 Qg6 36.Bd2 Qb1 37.Kh2 Qd3 38.Qe5 g6 39.Qe8 '-/+' Kg7 40.Qe5 '?' Kh7 '??' ' 41.Qe8 '=' Kg7 42.Qe5 f6 '>=' 43.Qe1 g5 '-+' 44.Kg1 Kf7 45.Qc1 Qe2 46.Qc2 Kg7 47.Qc1 Kg6 48.Qb1 '?' f5 49.Qc1 Kf6 50.f4 g4 51.g3 Kg6 52.Be1 Nf6 53.Qd2 Qd3 54.Qg2 Ne4 55.Kh2 Kf6 56.Kg1 Ke6 57.Qh2 Qe3 58.Kf1 Qf3 59.Kg1 Qe3 60.Kf1 Nc3 61.Qh6 Kd5 62.Bf2 Qe2 63.Kg1 Ne4 64.Qh2 Qf2 65.Kh1 Qf1 66.Qg1 Qh3 67.Qh2 Ng3 68.Kg1 Qf1# 0–1. Grombacher,Walter – Pupols,Viktors, US op Seattle, 1966.

7.e3 ed4 8.ed4 Bd6 9.c4 Qc7 10.c5 Bf4 11.Ne2 Qe7 12.Nf3 Nbd7 13.g3 (13.Qa4 0-0+=) 13...Bc7 +=.

7.e3 ed4 8.ed4 Be6 9.Bd3 Bd6 10.Ngf3 0-0 11.0-0 Re8 12.Re1 Nbd7 13.Ng5 Qc7 =.

7.e3 ed4 8.ed4 Be7 9.Bd3 (9.Ngf3 Bf5 10.Ne5 ab4 11.ab4 Ra1 12.Qa1 Qc7 13.Be2 0-0+=) 9...0-0 10.Ngf3 Re8 11.0-0 Bg4 12.h3 Bh5 13.Re1 Nbd7 =.

7.e3 Bg4 A) 8.f3 Be6 9.c4 dc4 10.Bc4 Nd5 11.Qb3 Nd7 12.Ne2 ab4 13.e4 Nc7=; B) 8.Qa4 ed4 (8...Ra7 9.de5 Nfd7 10.Qc2 Qc7 11.f3 Bh5 12.f4 Qb6 13.Kf2 g5+=; 8...e4 9.c4 Ra7 10.c5 ab4 11.Qb4 Qd8 12.h3 Be6 13.Ne2 Nbd7=; 8...Nfd7 9.de5 Ne5 10.c4 Nc4 11.Nc4 dc4 12.Bc4 Nd7 13.Qb3 Bh5+=) 9.cd4 Bd6 10.Bd3 Qc7 11.h3 b5 12.Qc2 Bh5 13.ba5 Qa5+=; C) 8.Be2 Be2 9.Ne2 e4 10.Ng3 ab4 11.ab4 Ra1 12.Ba1 Qc7 13.f3 Bd6+=.

7.de5 Ng4 8.e3 Ne5= 9.Ngf3 A) 9...Nf3 10.Nf3 Bf5 (10...Bd6 11.b5 0-0 12.c4 Be6 13.Qd4 Qd4+=) 11.Be2 Nd7 (11...Be4 12.0-0 Qc7 13.c4 Bf3=) 12.0-0 Rd8 13.Nd4 Be4=; B) 9...Bg4 10.Be2 Qc7 11.0-0 Bf3 12.Nf3 Nf3 13.Bf3 Qe5=.

6.Qa4 Na6 7.d4 (7.Nf3 Bf5+=) 7...Bf5 (7...ab4 8.ab4 Bf5 9.Nf3+=) 8.Nd2 ab4 9.cb4 g6 (9...Nc7 10.Qd1+=) 10.Ngf3= Bg7 11.Rc1 0-0 12.Qb3 Nd7 13.Be2 Rac8 14.Ba1 Kh8 15.0-0 f6 (15...Nf6 16.Qc3=) 16.Nh4 Be6 17.e4 (17.f4 Bf7+=) 17...Nc7 18.ed5 Nd5 19.Bc4 Qd8 20.Rfe1 Bf7 21.Ne4 N7b6 22.Bf1 (22.Be2!?=) 22...Bh6+= 23.Rc5 Nd7 24.Ra5 f5 (24...b6 25.Ra7=) 25.Nc5+= b6 26.Nd7 Qd7 27.Ra6 Bg7 28.Qh3 Bf6 29.Nf3 Qb7 30.Ne5 Be8 (30...Kg7 31.Qg3=) 31.Qh6 (31.Be2 Nc7 32.Ra4 Rd8+=) 31...Kg8 32.Ra4 Rd8 33.Rb1 (33.Ba6 Qc7+=) 33...e6 (33...c5 34.Ba6 Qc7 35.b5 cd4 36.Nc4-+) 34.Nf3 (34.Re1 Nc7+=) 34...Qe7 (34...b5 35.Ra5=) 35.Qc1 (35.Re1 b5 36.Ra6 Qb7+=) 35...Rc8 (35...b5 36.Ra5=) 36.Ne5 Qc7 37.Ra6 (37.Ba6!? Ra8 38.b5=) 37...Qb7+= 38.Qb2 b5 (38...b5 39.Ra5 Bd8+=). Shevchenko – Romanov,Sergey SM, 1986.

6.Qb3 e5 7.c4 Nbd7 8.d4 ab4 9.de5 ba3 10.Qb6 Nb6 11.Na3 -/+.

6.Qb3 Bf5 7.a4 (7.Nf3 Nbd7=+) 7...ab4 (7...Nbd7 8.Nf3-/+) 8.cb4=+ Nbd7 9.b5 (9.a5 Qc7=+) 9...e6 10.Nf3 h6 (10...Bd6 11.Bc3=+) 11.Nd4 Bh7 (11...Nc5 12.Qd1 Nd3 13.Bd3 Bd3 14.Qb3 Bb1 15.Rb1=+) 12.Be2 (better 12.bc6 bc6 13.Qb6 Nb6 14.a5+=) 12...c5=+ 13.Nf3 Bd6 (13...c4 14.Qd1=+) 14.0-0 (14.d3 e5=) 14...Qc7 (better 14...c4 15.Qd1 Nc5=+) 15.Qc2?? (15.d3 e5 16.h3 0-0=) 15...b6 (better 15...Bc2 16.Rc1 Bb1 17.Rcb1 e5-+) 16.Bd3? (16.d3 e5=+) 16...Ne4?? (better 16...Bd3!? 17.Qd3 e5-+) 17.Nc3 (17.Bg7 Rg8 18.Qb2 Bf5=+) 17...f5 (17...Ndf6 18.h3=+) 18.h3 (18.Be2 c4=) 18...0-0=+ 19.Ra2 (19.Be2 c4=+) 19...Ndf6 (19...c4 20.Be4 fe4 21.Nd4-/+) 20.Rfa1 (20.Be2 Nc3 21.Qc3 f4=+) 20...e5 (better 20...f4=+) 21.Qb3?? (21.Be2 f4 22.ef4 ef4=) 21...Kh8?? (better 21...Nc3 22.Bc3 e4-+) 22.Nd5=+ Bg8?? (better 22...Nd5 23.Qd5 Nf6-/+) 23.Nc7+- Bb3 24.Na8 Ba2?? (24...Ra8 25.Be5 Ba2 26.Ra2 Be5 27.Ne5+-) 25.Ra2 (better 25.Nb6 Be6 26.Bc4+-) 25...Ra8 26.Be4 (26.Be5 Be5 27.Ne5 Nd5+-) 26...Ne4 (26...fe4 27.Ne5 Be5 28.Be5+-) 27.Ne5 Be5 28.Be5 Nd2?? (28...c4 29.Bd4 Nd6+-) 29.Rd2 Ra4 (29...Kg8 30.Rd7 g5 31.Rg7 Kf8 32.Rb7+-) 30.Rd7 (better 30.Rd8!? Kh7 31.Rd7 Kh8 32.Rg7 Re4+-) 30...Rb4 31.Rg7 Rb5 (31...Rb1 32.Kh2 Rb5 33.Kg3+-) 32.f4 h5 (32...Rb4 33.Kf2+-) 33.Kf2 h4 34.Kf3 (34.Rg5 Kh7+-) 34...Rb1 35.g4 (better 35.Rg5 Kh7 36.Rf5+-) 35...Rf1 (35...hg3 36.Rg5 Kh7 37.Rf5 Kg8+-) 36.Ke2 (better 36.Kg2 Re1 37.Kf2 Rd1 38.gf5 Rd2 39.Ke1 Rd3+-) 36...Rh1 (36...Rg1 37.g5 b5 38.g6 Rg2 39.Kd3 Rg6 40.Rg6 Kh7 41.Rg7 Kh8 42.e4+-) 37.g5 (37.gf5 Rh2 38.Rg2 Kh7 39.Rh2 Kg8 40.Rg2 Kf7 41.Rg7 Kf8 42.f6 Ke8 43.Re7 Kf8 44.f5 b5 45.Rc7 c4 46.Bd6 Ke8 47.f7 Kd8 48.f8Q) 37...Rh3 (37...Rg1+-) 38.g6 Rh2 (38...Rh2 39.Kd3 c4 40.Kc3 Rc2 41.Kc2 b5 42.Rd7 Kg8 43.Rd8) 0–1. RichardSommer (2070) – Magnus_Labandero (2080), lichess.org, 2020.

6.Qb3 Bf5 7.c4 ab4 8.ab4 (8.c5 Qc7 9.ab4 Ra1 10.Ba1 Nbd7=) 8...Ra1 9.Ba1 Na6 10.cd5 (10.Bc3 Nc5 11.Qb2 Na4=+) 10...Nb4 (better is 10...Nd5 11.Ba6 ba6-/+) 11.Qb2? (11.Bd4 Qa5 12.Bf6 ef6 13.dc6 Nc2 14.Kd1 bc6 15.Qb8 Kd7 16.Qb7 Kd6 17.Qb8 (17.Qf7? Qa4-+) 17...Ke7 18.Qb7 Kd6 19.Qb8 (19.Qf7? Qa4-+) 19...Kd7 20.Qb7 Kd8 21.Qb8 (21.Qf7 Qa4 22.Nc3 Qa1 23.Ke2 Qe1 24.Kf3 Qf1-+) 21...Kd7=) 11...Qa5 (11...Nfd5 12.Na3-+) 12.Na3? (12.dc6 Nc2 13.Kd1 Na1 14.cb7 Qa4 15.Ke1 Nc2 16.Qc2 Qc2 17.b8Q Qc8 18.Qc8 Bc8 19.Nf3+/–) 12…Qa3!! (13.Qa3 Nc2 14.Ke2 Na3 15.dc6 bc6-+; 12...cd5?! 13.Qe5 Nd3 14.Bd3 Bd3 15.Qb8 Qd8 16.Qb7=+; 12...Nfd5 13.g4 Be6 14.e4-/+; 12...Nbd5?! 13.Nf3 e6 14.Nc4-/+) 0–1. Padilla,Jose – Paramos Dominguez,Roberto (2410), La Coruna op, 1996.

6.Qc2 Nbd7 7.d4 =+.

6.Qc2 Nbd7 7.Nf3 e5 8.d3 Be7 9.Be2 0-0 10.0-0 c5 (10...ab4 11.cb4 Bd6 12.Nc3=) 11.bc5 (11.Nbd2 Qc7=) 11...Qc5 (11...Nc5 12.Ne5 Bd6 13.d4+=) 12.Nbd2+= Qc7 13.a4 b6 14.Rfc1 Ba6 (14...Bb7 15.c4+=) 15.c4 Rac8 16.Qb3 (16.Qb1 Bc5+=) 16...dc4 (16...e4!? 17.Ne1 Nc5=) 17.Nc4+= Bc4 (17...e4!? 18.de4 Nc5+= (worse 18...Ne4 19.Na5 Qa7 20.Ba6 Qa6 21.Nc6+-)) 18.Rc4+- (18.dc4?! Bd6 19.g3 e4=) 18...Qd6 19.Rac1 Rc4 20.Rc4 (20.dc4?! e4 21.Nd4 Nc5+=) 20...Nc5 (20...Nd5 21.d4 e4 22.Ne5+-) 21.Qc2+- Nfd7 (21...Nd5 22.Be5 Qg6 23.Qb2+-) 22.d4 (22.Ba3 Qf6 23.d4 ed4 24.ed4 Ne4+-) 22...ed4+- 23.Rd4 (23.ed4!? Ne6 24.Bd3+-) 23...Qg6 24.Qc4 (24.Qg6!? hg6 25.Ba3+=) 24...Bf6= 25.Rd2 Qb1 26.Qc1 Qc1 27.Bc1 Rc8 28.Ba3 Ne5 (28...Nf8!? 29.Rc2 Nfe6=) 29.Ne5+= Be5 30.Bb5 (30.Bc5 bc5 31.Ba6 Re8+=) 30...Ne4 31.Rd5 (31.Rd7 g6+=) 31...Bb8 (31...Bf6!? 32.g3 h6=) 32.Rd7 (better 32.Bb2+-) 32...h6? (32...Nc5!? 33.Bc5 bc5+-) 33.g3 (better 33.Ba6!? Re8 34.Bc4+-) 33...Nc5 34.Rd2 (34.Bc5 bc5 35.Bc4 Rf8+-) 34...Ne4 (34...Be5 35.Rc2+=) 35.Rd4+- Nc3? (35...Nc5 36.f4+-) 36.Bd7?? (better 36.Ba6 Re8 37.Bb2+-) 36...Ne2+= 37.Kg2 Nd4 38.Bc8 Nb3 39.Bd7 Nc5 40.Bc6 Kf8 (40...Be5 41.f4 Bc3 42.e4+=) 41.Kf3 (41.f4 Bd6+-) 41...Ke7 (41...f5 42.e4 fe4 43.Be4+=) 42.e4 (42.Kg4 Bd6 43.Bb2 Nd3 44.Bg7 Ne5 45.Be5 Be5+=) 42...Bd6 43.Bb2 f6 44.Ke3 g5 (44...Be5 45.Bd4=) 45.f4 (45.Bb5 Be5 46.Bc1 Nb3 47.Ba3 Bd6 48.Bd6 Kd6=) 45...gf4= 46.gf4 (46.Kf3 Be5 47.Ba3 fg3 48.hg3 h5=) 46...Bf4=+ 47.Kf4 Nd3 ½–½. Dos Anjos,Diovana Ferreira (1605) – Taha,Najla Mohamad (1845), PARANAENSE DE XADREZ FEMININO – Pirai d, 2017.

6.Qc2 e6 7.Nf3 Nbd7 8.d4 ab4 (8...Bd6 9.Be2=+) 9.cb4= Bd6 10.Nc3 (10.Bd3 Ra7=) 10…0-0 ½–½. Heyer,Thomas – Rilling,Regina, Weilburg–ch op, 1997.

6.Qc2 g6 7.c4 Bf5 Black gets in control 8.Qb3 Nbd7 9.Nf3 Nc5 10.Qc3 Na4 11.Qb3 Nb2 12.Qb2 ab4 13.ab4 Ra1 14.Qa1 Qb4 15.Nc3 Bg7 16.Qa8 Kd7 17.Ne5 Ke6 18.Qa1 Ne4 19.cd5 cd5 (19...Ke5 20.f4 Kd6 21.Ne4 Be4 22.Qg7+/–) 20.Ne4 (20.Nd3 Qc3 21.Nf4 Kd6 22.dc3 Bc3 23.Qc3 Nc3-+) 20...Be5 21.f4?? (better is 21.Ng5 Kf6 22.Qa2-+) 21…Ba1 (22.Ng5 Kf6-+; 21...Qe4?! 22.fe5 Qh4 23.Kd1 Bg4 24.Be2-+) 0–1. Franek,Mieczyslaw – Mus,Roman, corr 1. AMM Poland, 1991.

6.Qc2 g6 7.Bd3 Bg7 8.Nf3 Nbd7 9.0-0 0-0 10.Re1 Ng4 11.h3 Nge5 12.Ne5 Ne5 13.Be2 (13.e4 Rd8+=) 13...Bf5-/+ 14.d3 ab4 15.cb4 (15.ab4 Ra1 16.Ba1-/+) 15...Nd7 (better is 15...Nd3!? 16.Bd3 Bd3-/+) 16.Bg7+= Kg7 17.Qc3 Nf6 (17...e5!?=) 18.g4+= d4 19.ed4 Nd5 20.Qc5 Be6 21.Nd2 (21.Bf3 Qc5 22.bc5= (worse is 22.dc5 Nb4 23.Rc1 Nd3-+)) 21...h5 (better is 21...Qc7!?=) 22.Qb6 Nb6 23.Nc4 (23.gh5 Bh3 24.Bf3 Be6+=) 23...Nd5 24.Na5 (24.gh5 gh5 25.Bh5 Bh3=) 24...Rab8 (24...hg4 25.hg4 Ra7 26.Bf3=) 25.Kh2 hg4 26.Bg4 Bc8 27.Kg3 f5 (27...Rh8!?=) 28.Bf3+= f4 29.Kh2 Rh8 30.Bd5 (30.b5 Bh3 31.Kg1 e6 32.bc6 bc6 33.Nc6 Rb2+/–) 30...Rh3 31.Kg1 cd5 32.Re7 Kf6 33.Re8 Bg4 (33...Rd3 34.Rc1 b6 35.Nc6+= (35.Rcc8 Rc8 36.Rc8 ba5+=)) 34.f3 Re8 35.fg4 Re2 36.Rf1 f3 37.Rf2 Rh1! 38.Kh1 Rf2 39.Kg1 Ra2 40.Nb7 Kg5 41.Nc5 Kf4 (41...Kf4 42.g5 Ra3-+; 41...Ra3 42.Kf2 Kg4 43.Ke1-+; worse is 41...Kg4 42.Kf1-+) 0–1. Schoppmeyer,Herbert – Adam,Detlef, OWL–ch Loehne, 1971.

6.Qc2 g6 7.Nf3 Bg7 8.Be2 Bg4 (8...0-0 9.0-0=) 9.d3 0-0 10.0-0 Nbd7 11.Nbd2 Rfe8 (11...Ne5 12.h3 Nf3 13.Nf3=) 12.Nb3 (12.h3 Bf3 13.Bf3 e6=) 12...ab4 13.ab4 Rec8 (13...e5 14.h3 Bf5 15.Nh4=) 14.Ra5 (14.h3 Bf3 15.Bf3 Ne8=) 14...Ra5 15.Na5 (15.ba5 Qc7=) 15...Ra8 (15...c5 16.Qd2=) 16.Ra1 (16.h3 Bf3 17.Bf3 Ne8=) 16...c5 17.Qb3 (17.h3 Bf3 18.Bf3 cb4 19.cb4 Qb4=) 17...Qb5=+ 18.Qc2 cb4 19.cb4 (19.d4 Qb6 20.cb4 Qb4=+) 19...Qb4 20.Bc3 Qc5 21.Qd2?? (better 21.Qb2=+) 21...Ne4-+ 22.Nb7 Ra1 23.Ba1 Nd2 (23...Ba1?! 24.de4 Qc8 25.Qd5=) 24.Nc5 Nc5 (24...Nc5 25.d4 Kf8-+; 24...Ba1?! 25.Nd2 Be2 26.Nd7 Bd3 27.Nb3-+) 0–1. Arduz Murillo,Valeria – Hatisuka,MC Roma, Festival Panamericano da Juven, 2010.

6.d3 Nbd7 7.Nf3 e5 8.Be2 Bd6 +=.

6.d3 e5 7.Nf3 Bd6 8.Be2+= Bg4 +=.

6.d3 Bg4 7.Be2= Be2 (7...Be2 8.Ne2 e5=) 8.Qe2 e5 =. Akman,Ozgur – Baeckstroem,Mikael (2295), corr ICCF WSTT/3/06/1, 2006.

6.d4 g6 7.Nf3 (7.c4 ab4 8.c5 Qc7=) 7...Bg7 (7...ab4 8.cb4 Bf5 9.Nc3=) 8.Be2 (8.c4 0-0=) 8...0-0 9.Nbd2 Qc7 (9...Bf5 10.0-0=) 10.ba5 (10.0-0 ab4 11.ab4 Ra1 12.Qa1 Bf5=) 10...Ra5 (10...Qa5 11.0-0=) 11.c4 dc4 (11...Bf5 12.0-0=) 12.Nc4 Rd5 13.0-0 Bf5 14.Nce5 Nbd7 15.Bc4 Ra5 (15...Rd6 16.Qb3 Nd5 17.Rfc1=) 16.Bc3 Raa8 17.Nd7 Nd7 18.Qb3 (18.Bd3 Bd3 19.Qd3 Ra4=) ½–½. Flazinski,Pawel – Hildingstam,Stefan, corr or01–018 E–mail, 2002.

6.Be2 e5 7.c4 ab4 8.ab4 Ra1 +=.

6.Be2 Bf5 (6...e5 7.d4 e4 8.Nd2=+) 7.d3 (7.Nf3 e6=) 7...h6 (7...e5 8.Nf3 Nbd7 9.Nbd2=+) 8.h3 (8.Nf3 Nbd7=) 8...Nbd7 9.Nd2 e6 (9...e5 10.Ngf3=+) 10.Ngf3= Bd6 11.Nd4 Bh7 12.0-0 0-0 13.Qb3 Ne5 (13...e5 14.N4f3=+) 14.Qc2= Qa6 d3 seems the pivot of the position (better 14...Rfd8=) 15.Rfd1?? (better 15.f4 Nc4 16.Nc4 dc4 17.e4=) 15...Bd3-+ Black fights for the Initiative 16.Bd3 Qd3 (worse 16...Nd3 17.b5 Ne1 18.Re1 cb5 19.e4 de4 20.Ne4 Ne4 21.Qe4+-) 17.Qd3 (17.Rab1 Qc2 18.Nc2 b5-+) 17...Nd3 18.Rdb1 ab4 19.cb4 Nb2 (19...Ra4 20.Nc2 Nb2 21.Rb2-+) 20.Rb2 Ra4 21.Nc2 Be5 22.Nd4 b6 (better 22...Rfa8!?-+) 23.N2f3-/+ Bd4 24.Nd4 (24.ed4 Rfa8-/+) 24...c5 25.Nb5 (25.bc5 bc5 26.Nc2 Rc8-+) 25...Rfa8 26.Rab1 (26.bc5 bc5 27.Kf1 c4-+) 26...c4 27.Rc1 Ne4 (27...Kf8!? 28.Kf1-+) 28.f3 Nf6 29.Kf2 Ne8 (29...Nd7 30.Ke2-+) 30.Rc3 Rc8 31.Ke2 (31.Rd2 Kf8-/+) 31...Nc7 32.Nd4 (better 32.Nc7 Rc7 33.Rd2-+) 32...Rca8 33.f4 Ra3 34.Ra3 Ra3 35.Nc2 Ra4 36.g4 (36.Nd4 b5-+) 36...g5 37.fg5 (37.Kf3 b5-+) 37...hg5 38.Kd2 (38.Nd4 Ra1 39.Kf3 b5-+) 38...Nb5 39.Kd1 (39.Rb1 Nd6-+) 39...Nc3 40.Kd2 Ne4 41.Ke2 Kg7 42.Ke1 Kg6 43.Ke2 Ra2 (better 43...Ra8 44.Nd4 Rh8 45.Nf3 Rh3 46.Rc2-+) 44.Ra2 Nc3 45.Kd2 Na2 46.b5 e5 47.Ne1 f5 48.gf5 (48.Nf3 Kf6-+) 48...Kf5 49.Nf3 Nb4 50.Kc3 Nd3 51.Ng1 (51.e4 Ke4 52.Ng5 Ke3-+) 51...Ke4 52.Kd2 (52.Ne2 Ke3 53.Ng3 Nf2 54.Nf5 Ke2 55.Ng3 Kf3-+) 52...c3! 53.Kc3 A deflection 0–1. petrobbo (1985) – Tacchino (2325), ChessWorld.net, 2015.

6.Nf3 c5 7.Be2 Nc6 8.b5 c4 =.

6.Nf3 Nbd7 7.d4 e6 8.Nbd2 Be7 =.

6.Nf3 e6 7.Bd3 Bd6 8.0-0 c5 +=.

6.Nf3 Bf5 7.Qa4 Nbd7 8.d4 Qc7 9.c4 dc4 10.ba5 b5 11.ab6 Nb6 12.Qd1 Na4 13.Bc3?? (better is 13.Qc1=) 13...Bb1-+ 14.Qb1 Nc3 15.Qc2 Nce4 (15...Nb5 16.a4 e6 17.Bc4 Qa5 18.Nd2-+) 16.Bc4 e6 17.0-0 Ra3 18.Bb5?? (18.Ra3 Ba3 19.Bd3 Nf2 20.Rf2 Bd6=+) 18...Rc3 19.Ra8 Ke7 20.Qa2 Nd7 21.Ra7 Qd6 22.Ne5 Nef6?? 23.Bc4 g6 24.Qa4 Bh6-/+ 25.Nc6 Kf8 26.Qa5?? Rc4-+ 27.Ne5 Rc8 28.Rb1 Kg7 29.Qa4 Rc7 30.Ra6 Rb8 31.Ra1 Qb4 (32.Qb4 Rb4 33.Nd7 Rd7-+) 0–1. Wessel,Volkmar – Meyer,Juergen (2095), Schleswig Holstein–ch cand, 1994.

6.Nf3 Bf5 7.d3 Nbd7 8.Qc2 (8.Nbd2 A) 8...e6 9.Nb3 (9.Be2 Bd6 10.Nh4 Bg6 11.Ng6 hg6 12.h3) 9...a4 10.Nbd2 Be7 11.Be2 0-0 12.0-0; B) 8...e5= 9.c4 ab4 10.ab4 Ra1 11.Qa1 dc4 12.Qa8; 8.Nd4 Bg6 9.Be2 (9.Nf3 e5 10.Be2 Bd6 11.Nh4 ab4 12.ab4; 9.Nb3 ab4 10.cb4 e5 11.Be2 c5 12.0-0; 9.Nd2 e5 10.N4f3 Bd6 11.Be2 c5 12.Nh4; 9.Nc2 e5 10.Be2 Bd6 11.0-0 0-0 12.Nd2) 9...e5 10.Nf3 Bd6 11.Nh4 0-0 12.Ng6; 8.Be2 e5 9.Nbd2 (9.0-0 ab4 10.cb4 Bd6 11.Nbd2 0-0 12.e4; 9.h3 Bd6 10.Nbd2 0-0 11.e4 Be6 12.Ng5; 9.Nh4 Be6 10.f4 ef4 11.ef4 g6 12.d4; 9.Qc2 Bd6 10.Nbd2 ab4 11.cb4 0-0 12.0-0) 9...Be7 10.c4 ab4 11.ab4 Ra1 12.Qa1; 8.Nh4 Bg4 9.Be2 Be2 10.Qe2 e6 11.0-0 Bd6 12.Nf3) 8...e6 (8...e5 9.Nbd2+= (9.Be2 Bd6 10.Nbd2 ab4 11.cb4 0-0 12.0-0) 9...Bd6 10.Be2 ab4 11.cb4 0-0 12.0-0) 9.Be2 (9.Nh4 Bg6= 10.Be2 ab4 11.ab4 Ra1 12.Ba1) 9...Be7 (9...Bd6 10.Nh4 Bg4 11.Bg4 Ng4 12.c4) 10.0-0 0-0 (following moves are an analysis) 11.Nd4 Bg6 12.Nb3 ½–½. De Kruif,Kees (2050) – Gravett,Alan D (1975), Guernsey op, 2005.

6.Nf3 Bf5 7.Be2 e6 8.Nh4 Bg6 =.

6.Nf3 g6 7.Be2 Bg7 8.0-0 0-0 9.Qc2 Bf5 10.d3 Re8 11.Nbd2 e5 12.Nh4 (12.e4 Bg4=) 12...Be6 13.Nb3 ab4 14.ab4 Na6 15.d4 (15.Nf3!? Bf5 16.Rfd1=) 15...e4=+ 16.g3 Bg4 17.Ra5 Be2 18.Qe2 Nc7 19.Rfa1 Ra5 20.Ra5 Ra8 21.Ra8 Na8 22.f3 Qa7 23.b5 (23.fe4 Ne4 24.Nc5 Qa2 25.Ne4 Qb1 26.Kg2 Qe4 27.Nf3 Nb6-/+) 23...Qa2 (23...g5 24.Nf5 ef3 25.Qc2-/+) 24.Nc5 (24.Nc1 Qa4-/+) 24...Nc7 (24...Qb1 25.Kg2 g5 26.bc6 bc6 27.fe4 gh4 28.ed5 cd5 29.Qb5-+) 25.b6-+ Na8 26.Nb7? (better 26.Qc2!?-/+) 26...Nb6-+ 27.Nd8 (27.Nd6 Bf8 28.fe4 Qb1 29.Qf1 Qf1 (29...Qb2?! 30.Qf6 Bd6 31.Qd6=) 30.Kf1 Bd6-+) 27...Nc4 28.Nc6 Qb1 29.Kg2 Qb2 30.Qb2 Nb2 31.fe4 de4 (31...de4 32.Kh3 Nd5-+) 0–1. Mastny,T – Zavodny,Z, Gargulakov mem, 1978.

6.Nf3 g6 7.Be2 Bg7 8.0-0 0-0 9.d4 Ne4 10.Nbd2 Nd2 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.Qd2 Qc7 (11...Bg4 12.c4=) 12.c4+= ab4 (12...Bg4 13.cd5 cd5 14.Rfc1+=) 13.ab4+/– Ra1 14.Ra1 e6 15.c5 Nd7 16.Qc3 f6 (16...b5 17.cb6 Qb6 18.Bd3+/–) 17.b5 e5 18.b6 Qb8 (18...Qd8 19.Qc2+/–) 19.Ra4 ed4 (19...e4 20.Nd2 f5+/–) 20.Qa3 (20.Nd4 Ne5+/–) 20...Ne5 (better is 20...de3!? 21.Qe3 Ne5=) 21.Nd4+/– Bd7 22.Qa2 Kh8 23.Ra7 Re8 24.Qa1 Kg8 25.Nb3 Rf8 26.Na5 Bc8 27.f4 Nd7 (27...Ng4 28.Nb7! Bb7 29.Bg4 h6+-) 28.Bd4 (28.Nb3 Nb6 29.cb6 Qd6+-) 28...Ne5? (better is 28...Re8+/–) 29.fe5+- fe5 (29...Bh6 30.ef6 Rf7 31.Be5 Be3 32.Kh1+-) 30.Nc6! bc6 31.Rg7! (31.Rg7 Kg7 32.Be5 Qe5 33.Qe5 Kg8 34.Qc7+-) 1–0. Kesteris,Imants – Kuczaj,Chris, Canada op Edmondton, 2000.

6.f4 c5 7.b5 c4 8.a4 Bf5 9.Nf3 Nbd7 10.Be2 Nc5 11.0-0 e6 12.Na3 Bd6 13.Nd4 Bd3 14.Nac2 Be2 15.Qe2 Nfe4 16.Kh1 h5 17.Ne1 h4 18.Rf3 Qd8 19.Ba3? (better is 19.Kg1-/+) 19...Ng3-+ 20.Rg3 hg3 21.h3 Ne4 22.Bd6 Qd6 23.Nef3 f6 24.Qe1 g5 25.fg5 fg5 (25...Ng5?! 26.Ng5 fg5 27.Qe2-+) 26.Ne2 (26.Kg1-+) 26...g4 27.Nfd4 gh3 (27...gh3 28.gh3 Rh3 29.Kg2 Rh2 30.Kg1 Nf2-+) 0–1. De Oliveira,Carlos A – Medeiros Jovany,Luis A, CXEB TBI–C–XI–XII–P–0068, 1993.

6.f4 Bf5=+ 7.c4 ab4 8.cd5 (8.c5!? Qd8 9.ab4 Ra1 10.Ba1=+) 8...Nd5-/+ 9.Bc4 (9.ab4 Ra1 10.Ba1 Nb4-/+) 9...e6 10.Qb3 Nd7 11.ab4 (11.Bd4 c5 12.ab4 Ra1 13.Ba1 Nb4-+) 11...Ra1 12.Ba1 Nb4 13.Qb2?? (13.Ke2-+) 13...Nc2 14.Ke2 (14.Kf2 Na1 15.Qa1 Qb1-+) 14...Na1 15.Qa1 Qb1 16.Qb1 Bb1 17.Nf3 Be4 18.Ra1 Bf3 19.Kf3 Kd8 20.Rc1 Bd6 21.d4 Nb6 22.Bd3 Kc7 (23.h3 Ra8-+) 0–1. Weiss,Ingo – Jacke,Benno, SVR op Remagen, RLP, 2001.

6.f4 Bf5=+ 7.c4 dc4 8.Bc4 ab4=+.

6.f4 Bf5=+ 7.Ne2 Nbd7=+.

6.f4 Bf5 7.Nf3 e6 8.Be2 Nbd7 9.0-0 c5 10.b5 c4 11.a4 (11.Nd4 Be4=+) 11...Bd6 12.Ba3 Ba3 13.Na3 0-0-0 (13...0-0 14.Nd4=+) 14.Nc2 Bc2 15.Qc2 Ne4 16.Nd4 (16.Bc4 Nd2 17.Nd2 Qe3 18.Kh1 dc4 19.Nc4 Qc5 20.Na5 Qf5 21.Qf5 ef5+/–) 16...Ndc5 17.d3 (17.Rad1 Qc7=) 17...cd3 18.Bd3 Kb8 (18...Nd3 19.Qd3 Nc5 20.Qe2=) 19.c4 Nd3 20.Qd3 Nc5 21.Qe2 h6 22.Rab1 f5 23.Nc6 bc6=+ 24.bc6 Nb3 25.c5 Qc6 26.Rb3 Kc7 27.Qb2 Rb8?? 28.Qe5+- (28…Kd7 29.Qg7 Kc8 30.Qh8 Kd7 31.Rb8 Qc5 32.Rb7 Qc7 33.Qg7 Ke8 34.Qc7 d4 35.Qe7) 1–0. Alexopoulos,Spiros – Zurawski,Claas, NRW–chT U20 Germany, 1995.

6.h3 Nbd7 7.Nf3 e6 8.Qc2 Bd6 9.Be2 Ne5 10.d3 Nf3 11.Bf3 Bd7 12.Nd2 ab4 13.cb4 e5 14.0-0 0-0 15.g4 Be6 16.Kh1 Rfc8 17.Rg1 c5 18.bc5 Rc5 19.Qb1 Rb5 20.Ra2 Ba3 21.Ra3 Ra3 22.Ba3 Rb1 23.Rb1 Qa6 24.Rb3 h6 25.Kg2 Qa5 26.Bb4 Qa6 27.Ra3 Qb5 28.Ra8 Kh7 29.Bc3 e4 30.de4 de4 31.Be4 Ne4 32.Ne4 Qc6 33.f3 Bd5 34.Bd4 Be4 35.fe4 Qe4 36.Kg3 b5 37.Ra6 Qb7 38.Rb6 Qc7 39.Kf3 Qc4 40.Kf2 b4 41.Ke1 Qc1 42.Kf2 b3 43.Kf3 Qf1 44.Kg3 Qg1 45.Kf3 Qh1 46.Kg3 Qg1 47.Kf3 Qd1 48.Kg3 Qc2 49.Kf3 f5 50.Kg3 Qc7 51.Kg2 Qb6 0–1. ekosachro (2410) – tightfist (2470), net–chess.com, 2014.

6.h3 Bf5 7.Nf3 e6 8.Qa4 Be7 9.Be2 0-0 10.0-0 c5 11.Ne5 (better is 11.d3!?=+) 11...Nc6-/+ 12.Nc6 bc6 (12...Qc6?! 13.Bb5 Qb6 14.bc5 Bc5 15.c4=+) 13.d3 ab4 14.Qb3 Rfb8 15.a4 bc3 16.Qb6 Rb6 17.Bc3 Rba6 18.Bd1? (better is 18.g4 Bg6 19.a5=+) 18...Bd3-+ 19.Re1 Ne4 20.Nd2 (20.Be5-+) 20...Nc3 21.Bf3 (21.Ra3 d4-+) 21...Ra4 22.Kh2 (22.Ra4 Ra4 23.Rc1-+) 22...Ra1 23.Ra1 Ra1 24.h4 Ra2 25.Nb3 Rf2 26.Kg3 Rb2 27.Nc1 Bd6 28.Kh3 Bf5 29.Bg4 Bg4 (29...Rb1 30.Bf5 ef5 31.e4-+) 30.Kg4 Rg2 31.Kh5 g6 32.Kh6 Bf8 0–1. willi_weizenkeim – den2707, HCL–B1749 playchess.de, 2003.

7.c4 ab4 8.c5 Qa5 =+.

7.Bd3 Bd3=+ 8.Qd3 Nbd7 9.Nd2 e5 10.f3 ed4 11.ed4 Be7 12.Ne2 0-0 13.0-0 Rfe8 14.Ng3 (14.Rfe1 Bd6=+) ½–½. Schalkwijk,Peter – Daus,Peter, Standard, 2001.

7.f3 Nbd7 8.Ne2 e5 9.g4 Bg6 10.Ng3 ed4 11.ed4 Be7 12.f4 Be4 13.Ne4 Ne4 14.g5 h6 15.Nd2 hg5 16.Ne4 de4 17.Qc2 f5 18.0-0-0 gf4 19.Qg2 g5 20.Bc4 0-0-0 21.Be6 Rhf8 22.c4 ab4 23.Qh3 ba3 24.Ba3 Ba3 25.Qa3 Kc7 26.Qe7 Rfe8 27.Qf7 Re6 28.Qe6 Ra8 29.c5 Qb4 30.Kc2 Ra3 31.Rb1 Rc3 0–1. Eckhoff,K (1690) – Riemelmoser,O (2045), Finkenstein, 1997.

7.f3 e6 8.c4 =+.

7.Qa4 A) 7...e6 A1) 8.h3 Bf5 (8...Bh5 9.Ne2 Bd6 10.Nf4 Nbd7 11.Nh5 Nh5 12.Be2 g6) 9.Nf3 Nbd7 10.Nh4 Be7 11.Nf5 ef5 12.Qc2 ab4; A2) 8.Nd2 Be7 (8...Nbd7 9.h3 Bf5 10.Ngf3 Be7 11.Nh4 0-0 12.Nf5 ef5) 9.h3 Bf5 10.Ngf3 Nbd7 11.Nh4 0-0 12.Nf5 ef5; A3) 8.Nf3 Nbd7 (8...Be7 9.c4 0-0 10.c5 Qc7 11.Nc3 Nbd7 12.b5 Ne4) 9.Nbd2 Be7 10.h3 Bf5 11.Nh4 0-0 12.Nf5 ef5; B) 7...g6 B1) 8.Nf3 Bg7 (8...Nbd7 9.Nbd2 Bh6 10.Bd3 0-0 11.Qc2 ab4 12.cb4 e6) 9.Nbd2 0-0 10.Bd3 Nbd7 11.0-0 Qc7 12.Qc2 e5; B2) 8.h3 Bf5 (8...Be6 9.Nf3 Nbd7 10.Nbd2 Bg7 11.Bd3 0-0 12.Qc2 ab4) 9.Nd2 Nbd7 10.Ngf3 Bg7 11.g4 Be4 12.g5 Bf3; B3) 8.Nd2 Bg7 (8...Nbd7 9.Ngf3 Bf5 10.Nh4 Be6 11.Be2 Bh6 12.0-0 g5) 9.Ngf3 Bf5 10.Nh4 Be6 11.Be2 0-0 12.0-0 Nbd7; C) 7...Ra7 C1) 8.Nf3 ab4 (8...e6 9.Qc2 Bd6 10.Bd3 Bf3 11.gf3 Nbd7 12.Nd2 ab4) 9.Qb4 Qc7 10.Nbd2 e5 11.Qb3 e4 12.Ne5 Bf5; C2) 8.Nd2 e6 (8...ab4 9.Qb3 Nbd7 10.cb4 e6 11.Ngf3 Bd6 12.Bd3 0-0) 9.Qc2 Bf5 10.Bd3 Bd3 11.Qd3 Nbd7 12.Ngf3 ab4; C3) 8.Qc2 Nbd7 (8...e6 9.Nf3 Bd6 10.Nbd2 Bf5 11.Bd3 Bd3 12.Qd3 ab4) 9.Nf3 e6 10.Nbd2 Bd6 11.Bd3 ab4 12.cb4 g6; D) 7...Nbd7 D1) 8.Nd2 e6 (8...e5 9.Ngf3 Ra7 10.Qc2 ed4 11.Nd4 Bd6 12.h3 Be6) 9.h3 Bf5 10.Ngf3 Be7 11.Nh4 0-0 12.Nf5 ef5; D2) 8.Nf3 e6 (8...g6 9.Nbd2 Bf5 10.Be2 Bg7 11.Nh4 Bg4 12.Bg4 Ng4) 9.Nbd2 Be7 10.h3 Bf5 11.Nh4 0-0 12.Nf5 ef5; D3) 8.h3 Bf5 (8...Bh5 9.Ne2 e5 10.Ng3 Bg6 11.c4 Ra7 12.b5 ed4) 9.Nd2 e6 10.Ngf3 Be7 11.Nh4 0-0 12.Nf5 ef5.

7.Qc2 ab4 A) 8.ab4 Ra1 (8...Na6 9.Nd2 e6 10.Bd3 Bd6 11.Ngf3 0-0 12.Ne5 g6) 9.Ba1 Nbd7 10.h3 Bh5 11.Nf3 e6 12.Nbd2 Bd6; B) 8.Nd2 ba3 (8...bc3 9.Bc3 Nbd7 10.h3 Bh5 11.Ngf3 Bg6 12.Bd3 Bd3) 9.Ba3 Nbd7 10.Ngf3 e6 11.Rb1 Qc7 12.Bf8 Kf8; C) 8.cb4 Nbd7 (8...e6 9.Bd3 Bd6 10.h3 Bh5 11.Nc3 Nbd7 12.Nge2 Bg6) 9.h3 Bh5 10.Nf3 e6 11.Nbd2 Bg6 12.Bd3 Bd3.

7.Qc2 Nbd7 8.h3 (8.Nf3 e6 (8...ab4 9.cb4 e6 10.Nc3 Bd6 11.Bd3 0-0 12.0-0 Rfe8) 9.Nbd2 Bf5 10.Bd3 Bd3 11.Qd3 ab4 12.cb4 Bd6; 8.Nd2 e6 (8...ab4 9.cb4 e6 10.Bd3 Bd6 11.h3 Bh5 12.Ngf3 0-0) 9.Bd3 Bd6 10.Ngf3 0-0 11.c4 Be7 12.c5 Qc7) 8...Bh5 (8...Be6 9.Nf3 g6 10.Bd3 Bh6 11.0-0 0-0 12.Nbd2 Rfe8) 9.Nd2 (9.Nf3 ab4 (9...Bg6 10.Bd3 Qb5 11.Bb5 Bc2 12.Be2 e6) 10.cb4 e6=+ 11.Nc3 Bd6 12.Be2 Bg6) 9...Bg6 (9...e5 10.Ngf3 Bg6 11.Qb3 ed4 12.Nd4 Bd6) 10.Bd3 Bd3 11.Qd3 e5 12.Qc2 (12.de5 Ne5 13.Qf5 Nfd7=+; 12.Ne2 Bd6) 12...ed4-/+ 13.ed4 Be7 (13...Bd6 14.c4 Bf4 15.Ngf3=+) 14.Ngf3 Qa6 (14...ab4 15.cb4 Qa6 16.Ne5=+) 15.Nb3 (15.ba5 0-0 16.c4 Qa5=+) 15...a4 (15...0-0 16.Qe2 Qb6 17.0-0=+ (17.Qe7?? Rfe8 18.Qe8 Re8 19.Kd1 Ne4-+)) 16.Nc1 0-0 17.Nd3 Rfe8 18.0-0-0 (18.0-0 Ne4=+) 18...b6 (18...Ne4 19.Rhe1-/+) 19.Kb1 c5 (19...Ne4 20.Rhe1=+) 20.g4 (better 20.Nde5!?=+) 20...cb4-/+ 21.ab4? (better 21.Nb4 Bb4 22.cb4-/+) 21...a3-+ 22.Bc1 Rec8 (better 22...Ne4 23.Rde1-+) 23.Nfe5 (23.Bd2-+) 23...Ne5 24.de5 Ne4 25.Bd2 d4! 26.Ka1 (26.cd4 a2 Double attack (26...Rc2 Pinning; 26...Rc2 Deflection; 26...Qc4 Decoy)) 26...Nc3 (better 26...Nd2 27.Rd2 dc3-+) 27.Rde1 (27.Bc3 Rc3 28.Qe2-+) 27...Ne4!! 28.Nc5 (28.Re4 Rc2 Discovered attack) 28...Nd2 29.Qd2 bc5 30.e6 (30.bc5 Bc5 31.e6 Ra7-+) 30...f6 (better 30...d3!? 31.ef7 Kf7 32.Re7 Ke7 33.b5 Qb5 34.Qc3-+) 31.bc5 Rc5 32.Qd4 (32.f4-+) 32...Rd8 33.Qe3 a2 34.f4 Qd3 (34...Rb5 35.Qc3 Rdb8 36.Qc8 Qc8 37.Rc1 Rb1 38.Rb1 ab1Q 39.Rb1 Qa6) 35.Qd3 Rd3 36.Rh2 Rcd5 (36...Rc8 37.Ka2 Bd6 38.Re4-+) 37.Ree2 Rb5 38.Rb2 (38.Rd2 Rdb3 39.Rb2 Bd6 40.Rb3 Rb3-+) 38...Rb2 39.Rb2 Bd6 40.Rc2 (40.Ka2 Bf4 41.Rb7 Re3-+) 40...Kf8 41.f5 Rh3 42.Ka2 (42.Rc6 Ke7 43.Ka2 Ra3 44.Kb2-+) 42...Rh2 43.Kb3 Rc2 44.Kc2 g6 45.Kd3 (45.fg6 hg6 46.Kc3 Bf4-+) 45...h5 (better 45...gf5 46.gf5 h5 47.Ke2-+) 46.gh5 (46.fg6 hg4 47.Ke4-+) 46...gh5 47.Ke4 h4 48.Kf3 h3 49.Kf2 h2 50.Kg2 Kg7 51.Kh1 Kh6 52.e7 Be7 53.Kh2 Kg5 54.Kg2 Kf5 55.Kf3 Bc5 56.Ke2 Ke4 57.Kd1 Bb6 58.Ke1 f5 59.Kd1 f4 60.Kd2 f3 61.Ke1 Ke3 62.Kf1 f2 63.Kg2 Ke2 64.Kh3 f1Q 65.Kg4 Bd8 66.Kh5 Qf6 67.Kg4 Qf3 0–1. Muratoglu,Salih – Demirel,Tolga (2310), TUR–ch Turkey, 1993.

7.Qc2 e6 A) 8.Nf3 Bf5 (8...Nbd7 9.Bd3 Bf3 10.gf3 Bd6 11.Nd2 0-0 12.c4 Qc7) 9.Bd3 Bd3 10.Qd3 Bd6 11.Nbd2 ab4 12.cb4 Nbd7; B) 8.Nd2 Bf5 (8...ab4 9.cb4 Bf5 10.Bd3 Bd3 11.Qd3 Nbd7 12.Ngf3 Bd6) 9.Bd3 Bd3 10.Qd3 Nbd7 11.Ngf3 ab4 12.cb4 Bd6; C) 8.Bd3 Nbd7 (8...Bd6 9.Nd2 ab4 10.cb4 Nbd7 11.h3 Bh5 12.Ngf3 0-0) 9.Nd2 Bd6 10.Ngf3 ab4 11.cb4 g6 12.Ne5 Bf5.

7.Qc2 g6 A) 8.Nd2 Nbd7 (8...ab4 9.cb4 e6 10.Bd3 Bd6 11.Ne2 Nbd7 12.f3 Bh5) 9.Ngf3 ab4 10.cb4 e6 11.Nh4 Bd6 12.h3 Bf5; B) 8.Nf3 e6 (8...Bf3 9.gf3 Nbd7 10.Nd2 e6 11.f4 Be7 12.Bd3 0-0) 9.Bd3 Bd6 10.Nbd2 ab4 11.cb4 Nbd7 12.0-0 0-0; C) 8.Bd3 Nbd7 (8...e6 9.Nd2 Nbd7 10.f3 ab4 11.cb4 Bh5 12.Nh3 Bh6) 9.Nf3 e6 10.Nbd2 ab4 11.ab4 Ra1 12.Ba1 Bd6.

7.Be2 A) 7...h5 A1) 8.Nd2 e6 (8...Nbd7 9.Ngf3 e6 10.h3 Bf5 11.0-0 Be7 12.Ng5 h4) 9.Ngf3 Nbd7 10.h3 Bf5 11.0-0 Be7 12.Ng5 h4; A2) 8.h3 Be2 (8...Bf5 9.Nf3 Nbd7 10.0-0 e6 11.Nbd2 Be7 12.Ng5 h4) 9.Ne2 Nbd7 10.Nd2 e6 11.0-0 Be7 12.Nf4 Bd6; A3) 8.Nf3 Nbd7 (8...e6 9.Nbd2 Nbd7 10.h3 Bf5 11.0-0 Be7 12.Ng5 h4) 9.Nbd2 e6 10.h3 Bf5 11.0-0 Be7 12.Ng5 h4; B) 7...Bf5 B1) 8.Nd2 Nbd7 (8...ab4 9.ab4 Ra1 10.Qa1 e6 11.Ngf3 Bd6 12.Ne5 0-0) 9.Ngf3 g6 10.0-0 Bh6 11.h3 ab4 12.ab4 0-0; B2) 8.Nh3 Nbd7 (8...e6 9.Nd2 Nbd7 10.g4 Bg6 11.Nf4 Bd6 12.0-0 Bf4) 9.Nd2 e6 10.g4 Bg6 11.Nf4 Bd6 12.0-0 Bf4; B3) 8.Nf3 h5 (8...Nbd7 9.Nbd2 g6 10.0-0 Bg7 11.Nh4 Be6 12.f4 Bh6) 9.Nbd2 h4 10.h3 Nbd7 11.0-0 Qc7 12.c4 e6; C) 7...Bc8 C1) 8.Nd2 Nbd7 (8...e6 9.Ngf3 Nbd7 10.c4 ab4 11.c5 Qc7 12.ab4 Ra1) 9.Ngf3 e6 10.c4 Be7 11.c5 Qc7 12.0-0 ab4; C2) 8.Bf1 e6 (8...Nbd7 9.Nf3 e6 10.Nbd2 ab4 11.ab4 Ra1 12.Qa1 Bd6) 9.Nf3 c5 10.Qc2 c4 11.Nbd2 Nc6 12.Be2 Be7; C3) 8.Nf3 Nbd7 (8...e6 9.Nbd2 Nbd7 10.c4 ab4 11.c5 Qc7 12.ab4 Ra1) 9.Nbd2 g6 10.0-0 Bg7 11.Qb3 0-0 12.c4 Qc7; D) 7...Be2 D1) 8.Qe2 Nbd7 (8...e6 9.Nf3 Nbd7 10.0-0 Be7 11.Nbd2 0-0 12.e4 Qb5) 9.Nf3 e6 10.0-0 Be7 11.Nbd2 0-0 12.e4 Qb5; D2) 8.Ke2 Nbd7 (8...e6 9.Nf3 Nbd7 10.Nbd2 Bd6 11.Qb3 ab4 12.ab4 0-0) 9.Nf3 e6 10.Qd3 Bd6 11.Nbd2 ab4 12.ab4 0-0; D3) 8.Ne2 e6 (8...Nbd7 9.Nd2 e6 10.0-0 Be7 11.Nf4 0-0 12.Qb3 ab4) 9.Nd2 Nbd7 10.0-0 Bd6 11.c4 Qc7 12.g3 0-0.

7.Ne2 A) 7...e6 A1) 8.Nd2 Nbd7 (8...Bd6 9.c4 Qc7 10.c5 Be7 11.f3 Bf5 12.Ng3 Bg6) 9.h3 Bf5 10.Ng3 Bg6 11.c4 Be7 12.c5 Qc7; A2) 8.f3 Bf5 (8...Bh5 9.Nf4 Bg6 10.Nd2 Bd6 11.Be2 Nbd7 12.0-0 e5) 9.Nd2 Nbd7 10.Ng3 Bg6 11.c4 Be7 12.c5 Qc7; A3) 8.h3 Bf5 (8...Bh5 9.Nd2 Nbd7 10.g4 Bg6 11.Nf4 Be7 12.Ng6 hg6) 9.Ng3 Bg6 10.c4 ab4 11.c5 Qc7 12.ab4 Ra1; B) 7...Bh5 B1) 8.Nd2 Nbd7 (8...e6 9.f3 Bg6 10.Nf4 Bd6 11.Be2 Nbd7 12.0-0 e5) 9.Nf3 Bf3 10.gf3 e6 11.Rg1 g6 12.Ng3 Bd6; B2) 8.Qa4 Ra7 (8...Na6 9.Qa5 Qa5 10.ba5 Nc7 11.Nd2 Ra5 12.Nf4 Bg4) 9.Nd2 Nbd7 10.Nf4 Bg6 11.b5 e6 12.Be2 Bd6; B3) 8.f3 Nbd7 (8...e6 9.Nd2 Bg6 10.Nf4 Nbd7 11.c4 Be7 12.c5 Qc7) 9.Nf4 Bg6 10.Nd2 e5 11.Ng6 hg6 12.Bd3 ed4; C) 7...h6 C1) 8.f3 Bf5 (8...Bd7 9.Nd2 ab4 10.cb4 e6 11.Nf4 c5 12.Be2 c4) 9.Ng3 Bg6 10.Bd3 Bd3 11.Qd3 Qb5 12.Ke2 Nbd7; C2) 8.Nd2 Nbd7 (8...ab4 9.ab4 Ra1 10.Qa1 Na6 11.Ng3 g6 12.Bd3 Bg7) 9.f3 Bf5 10.e4 de4 11.Ng3 Bg6 12.Nge4 Ne4; C3) 8.h3 Bc8 (8...Bh5 9.Nd2 Nbd7 10.g4 Bg6 11.Nf4 Bh7 12.h4 g5) 9.Nd2 ab4 10.cb4 Nbd7 11.Nc3 e6 12.Bd3 Bd6; D) 7...Nbd7 D1) 8.Nd2 e5 (8...e6 9.h3 Bh5 10.g4 Bg6 11.Nf4 Be7 12.Ng6 hg6) 9.h3 Bh5 10.g4 Bg6 11.Bg2 Qd8 12.f4 ed4; D2) 8.h3 Bf5 (8...Bh5 9.Nd2 g5 10.Qa4 Bh6 11.Ng3 Bg6 12.Nb3 0-0) 9.Ng3 Bg6 10.Nd2 h5 11.h4 e6 12.Be2 Bd6; D3) 8.f3 Bf5 (8...Be6 9.Nd2 g5 10.Ng3 Bh6 11.Bd3 0-0 12.0-0 c5) 9.Nd2 e6 10.g4 Bg6 11.h4 Bd3 12.Nb3 Bc4.

7.f3 Bf5 8.c4 ab4 +=.

7.Nf3 A) 7...Nbd7 A1) 8.h3 Bf5 (8...Bf3 9.Qf3 c5 10.Nd2 cd4 11.ed4 g6 12.Qe3 h5) 9.Nh4 Be4 10.Nd2 e6 11.f3 Bd6 12.Kf2 Qd8; A2) 8.Qc2 e6 (8...Bf3 9.gf3 e5 10.c4 ed4 11.Bd4 c5 12.ba5 Qa5) 9.Bd3 Bf3 10.gf3 Bd6 11.Nd2 ab4 12.cb4 e5; A3) 8.Nbd2 e6 (8...h6 9.h3 Bf5 10.Nh4 Bh7 11.Be2 e6 12.0-0 Be7) 9.c4 Be7 10.c5 Qc7 11.Bd3 Bf5 12.Bf5 ef5; B) 7...h6 B1) 8.Nbd2 Nbd7 (8...e6 9.Bd3 Nbd7 10.h3 Bf3 11.Nf3 Bd6 12.0-0 0-0) 9.Qc2 ab4 10.cb4 e6 11.Bd3 Bd6 12.h3 Bf3; B2) 8.Qc2 Bf3 (8...Nbd7 9.Nbd2 e6 10.Bd3 Bd6 11.c4 Qc7 12.c5 Be7) 9.gf3 Nbd7 10.Nd2 e6 11.Bd3 ab4 12.cb4 Bd6; B3) 8.Bd3 Nbd7 (8...e6 9.h3 Bf3 10.Qf3 Bd6 11.0-0 Nbd7 12.Nd2 e5) 9.Qc2 Bf3 10.gf3 e5 11.Nd2 ab4 12.cb4 Bd6; C) 7...h5 C1) 8.Nbd2 h4 (8...Nbd7 9.Qc2 ab4 10.cb4 g6 11.Bd3 e6 12.Nh4 Bd6) 9.Qc2 e6 10.h3 Bf5 11.Bd3 Bd3 12.Qd3 ab4; C2) 8.h3 Bf5 (8...Bf3 9.Qf3 Nbd7 10.Nd2 e6 11.Bd3 ab4 12.cb4 Bd6) 9.Nh4 Bh7 10.Nd2 Nbd7 11.c4 e6 12.b5 Be7; C3) 8.Qc2 Nbd7 (8...g6 9.Nbd2 ab4 10.cb4 Bf5 11.Bd3 Bd3 12.Qd3 Bg7) 9.Nbd2 ab4 10.cb4 g6 11.Bd3 e6 12.0-0 Bf5; D) 7...e6 D1) 8.Nbd2 Nbd7 (8...Bd6 9.h3 Bf3 10.Qf3 Nbd7 11.c4 Qc7 12.b5 Be7) 9.c4 Qc7 10.c5 Be7 11.Bd3 0-0 12.0-0 Bf5; D2) 8.Bd3 Nbd7 (8...Bd6 9.h3 Bf5 10.Bf5 ef5 11.c4 Bc7 12.Nc3 0-0) 9.h3 Bf5 10.0-0 Bd3 11.Qd3 ab4 12.cb4 Bd6; D3) 8.h3 Bh5 (8...Bf5 9.Nbd2 Nbd7 10.Nh4 Be4 11.f3 Bd6 12.Kf2 Qd8) 9.Nbd2 Nbd7 10.c4 Be7 11.c5 Qc7 12.Bd3 Bg6.

7.Qc2 Nbd7 8.Be2 e5 9.c4 Bf3 10.gf3 (10.c5 Be4 11.d3 Qc7 12.de4 Ne4=+) 10...ab4-/+ 11.cd5 Nd5 12.Rg1 ba3 13.Na3 f6 14.Nc4 Ra1 15.Ba1 Qa7 16.Bb2 b5 17.Na3 (better 17.Nd6 Bd6 18.Qc6-+) 17...Ba3 18.Rg7 (18.Qc6 Ne7 (18...Bb2?! 19.Qc8 Kf7 20.Qh8 Qa1 21.Bd1=+) 19.Qb5 Bb2 20.Qb2 0-0-+) 18...Bb2 19.Qc6 Ne7 20.Qe6 (20.Qd6 Qa1 21.Bd1 Ba3 22.Re7 Kf8 23.Qd7 Be7 24.Qb5 Rg8 25.Qb8 Kg7-+) 20...Ba3 (20...Qa1 21.Bd1 Ba3 22.Qa6-+) 21.f4 (21.Bb5 Rf8-+) 21...Qb6 (21...Qc5 22.Bg4 Qd6 23.Re7 Qe7 24.Qc6-+) 22.Bh5 (22.Qb3 Bd6-+) 22...Kd8 23.Qa2 (23.Qb3 b4-+) 23...b4 24.Qb3 (24.fe5 fe5 25.Bg4 Nf6-+) 24...Nc5 (24...ef4 25.Qd3-+) 25.Qf7 Qd6 26.fe5 fe5 27.Bg4 (27.Rh7 Rh7 28.Qh7 b3-+) 27...b3 28.Qf3 (28.Bd1 Bb4 29.Kf1-+) 28...e4 29.Qd1 b2 30.Qb1 Qd3 (30...Qd3 31.Qd3 Nd3 32.Kf1 b1Q 33.Kg2 Rf8 34.Bh3 Rf2 35.Kg3 Qg1 36.Kh4 Nf5 37.Bf5 Rh2 38.Bh3 Qg7 39.Kh5 Rh3) 0-1. acrobaticatur (2020) - Arifars17 (2215), Kolaborasi Hari Raya NYEPI Arena, lichess.org, 2018.

7.Be2 Bf3 8.Bf3 e5 9.0-0 =.

7.h3 Bf3 8.Qf3 e5 +=.

8.0-0 e5=+ 9.Qc2 e4 10.Nd4-/+.

8.0-0 e5=+ 9.Qc2 Be7 10.d3 0-0 11.Nbd2 Rfe8 12.Rfe1 Rac8 (12...Qc7 13.e4=+) 13.Nf1 (13.ba5 Qa5 14.c4 Bd6=) 13...c5 (13...e4 14.de4 Ne4 15.N1d2=+) 14.ba5 Qa5 15.Ng3 (15.c4 Bd6=+) 15...Bd6 (15...c4 16.dc4 Bf3 17.Bf3 Rc4 18.e4=) 16.e4 (16.c4 dc4 17.dc4 e4=+) 16...Qc7 (16...d4 17.Nf5 Bf5 18.ef5=+) 17.h3= Bf3 (17...de4 18.de4 Bf3 19.Bf3=) 18.Bf3 d4 (18...de4 19.Ne4 Ne4 20.Be4=) 19.c4 (19.Nf5 Rb8=) 19...g6 (19...Be7 20.Nf5=) 20.Qd2 Bf8 21.Reb1 Bg7 22.Bc1 Ra8 23.Rb5 b6 24.a4 Ra7 25.Qb2 Rea8 26.Bd1 Ne8 27.Qc2 Nd6 28.Rb2 Rf8 29.Bg5 f6 30.Bd2+= h6 31.Qc1 Kh7 32.Bf3 Qd8 33.Rba2 Qc7 34.Qe1 Kh8 35.Ne2 f5 36.Ng3 f4= 37.Nf1 Nf6 38.Nh2 h5 39.Qb1 Rb8 40.Qd1 Rf8 41.Qc2 Rc8 42.Qd1 Qf7 43.Qc2 Nh7 44.Be2 Ng5 45.f3 Qe6 46.Bf1 Bf6 47.Be1 Ngf7 48.Rb1 Bd8 49.Bf2 g5 50.g4 fg3=+ 51.Bg3 Nh6 52.Bg2= Bc7 53.Kh1 Rg8 54.Rg1 Nhf7 55.Qd1 Rg6 56.Be1 Ne8 57.Bd2=+ Rg7 58.Be1 g4 59.h4?? g3-/+ 60.Nf1 Nf6 61.Qc1 Nh7 62.Qd1 Bd8 63.Qd2?? Qf6–+ 64.Bh3 Qh4 65.Qg2?? Nfg5 66.Qg3 Qh3 67.Qh3 Nh3 68.Rg7 Rg7 69.Kh2 Nf4 70.Ra3 (70.Bg3 Nd3 71.Rd2 Nf4–+) 0–1. Baessler,Arwed (1735) – Rettler,Heinz (1870), 8sen.BayEM Schney, 1996.

8.0-0 e5 9.d3 Bd6 10.Nbd2 0-0 11.h3 Bh5 12.d4 e4 13.Nh2 Be2 14.Qe2 Qc7 15.Ng4 Ng4 16.Qg4 f5 17.Qh4 f4 18.ba5 Ra5 (18...Rf6 19.Nb3-/+) 19.c4=+ dc4 (19...b6 20.Rac1 Qb8 21.cd5 cd5 22.Rc6 fe3 23.fe3=+) 20.Nc4 (20.Ne4 Re8 21.Nd6 Qd6 22.Qf4 Qf4 23.ef4 Re4=) 20...Raf5=+ 21.Nd6 Qd6 22.Qg4 h5 23.Qh4 Qh6 (better 23...Qg6=+) 24.Qe7? (better 24.ef4 Qf4 25.Qf4 Rf4 26.Bc1=) 24...Nf6?? (24...fe3 25.Rab1 Rf2 (25...ef2?! 26.Kh1-+) 26.Qe4 Nf6 27.Qe6 Kh7-+) 25.Qe6+- Rf7 26.Qf5 fe3 27.fe3 (27.Bc1 Nd5 28.Qe4 Re7+-) 27...Qe3 28.Kh1 (28.Rf2 Qb3+-) 28...Qd2 (28...Qb3 29.Rab1+-) 29.Rf2 Qd3 30.Raf1 Qb3 (30...Qc4 31.Qg6 Kf8 32.Qg3+-) 31.Bc1 (31.d5 e3 32.Qc8 Kh7 33.Rf6 Rf6 34.Rf6 Qd1 35.Kh2 Qd5+-) 31...e3 (31...Rf8 32.Qg6 Qf7 33.Qg3+-) 32.Rf3 Re7 33.Qg5 (33.Rg3!? Kh8+-) 33...Nd5 (33...e2 34.Re1 Qd5+-) 34.Rf8 (34.Rf8 Kh7 35.Qh5) 1-0. Taufan99 (1965) - Arifars17 (2305), Seirawan Arena, lichess.org, 2017.

8.0-0 e5=+ 9.h3 Bf3 10.Bf3 Bd6=+.

8.0-0 e6 9.d4 Bd6 10.Nbd2 0-0 11.h3 Bf3 12.Bf3 e5 (12...ab4 13.ab4 e5 14.Qb3=+) 13.Nb3 (13.c4 Qd8=) 13...Rfe8 Black prepares e4 (13...ab4 14.ab4 Ra1 15.Qa1=+) 14.Qc2 (14.ba5 Qc7=) 14...ab4 15.ab4 Ra1 16.Ra1 e4 17.Be2 Bb8 18.Nc5 g6 (18...Qc7 19.g3=) 19.Qa4 (19.g3 Qc7=) 19...Nc5 20.dc5 Qc7 21.g3 h5? (21...Qe7 22.c4 Be5 23.Qc2+=) 22.h4 (better 22.c4!? Qe7 23.Bf6 Qf6 24.cd5+-) 22...Nd7 23.c4 dc4 24.Bc4 Ne5 25.Be2 Nf3? (better 25...Qd7+=) 26.Kf1?? (better 26.Bf3 ef3 27.Qd1+-) 26...Qd7-+ 27.Kg2 Qg4 (better 27...Qd2!? 28.Bf3 ef3 (28...Qb2?! 29.Bd1=) 29.Kf3 Qb2-+) 28.Rh1=+ Rd8 (28...Nh4!? 29.Kf1 Nf3=+) 29.Bc3 Qf5 (29...Bg3 30.fg3 Nh4 31.Kf2 (31.Rh4? Qe2 32.Kh3 g5 33.Re4 Kh7-+) 31...Qf5 32.Kg1=) 30.Qc2 (30.Qa8 Qc8+=) 30...Be5= 31.Rd1 Rd5 32.Be5 Re5 (32...Rd1!? 33.Qd1 Ne5 34.Qd8 Kg7=) 33.Rd8+/- Kh7 34.Rf8?? (better 34.Qd1+/-) 34...Ne1-+ 35.Kf1 Nc2 36.Rb8 Re7 (36...Qh3 37.Kg1 Ne1 38.Rh8 Kh8 39.Bh5 Qg2) 37.Bc4 Nb4 (37...Nb4 38.Rd8 Qc5-+) 0-1. jhonores (2220) - Orcamala (2075), Hourly SuperBlitz Arena, lichess.org, 2020.

8.d4 e6 9.Nbd2 Bd6 10.c4 Qd8 11.c5 Bc7 12.0-0 0-0 13.b5 cb5 14.Bb5 Qe7 15.Rc1 e5 16.de5 Be5 17.Be5 Ne5 18.Be2 Rfc8 19.Ne5 Be2 20.Qe2 Qe5 21.Nf3 Qe7 22.Qb5 ½–½. Marchant – Brodie, Toronto, 1973.

8.d4 Bf3=+ 9.gf3 (9.Bf3 e5=) 9...e5 10.Qc2 (10.de5!? Ne5 11.Rg1=+) 10...ed4 11.ed4 Bd6 12.0-0 0-0 13.Nd2 Qc7 14.h3 Nh5 (14...ab4 15.ab4 Rfe8 16.Ra8 Bh2 17.Kg2 Ra8 18.Re1-/+) 15.Rfe1 (15.Bd3 Bh2 16.Kh1 Nhf6=+) 15...Qd8 (15...Nf4 16.Qf5-/+) 16.Qf5 g6 (16...Nf4 17.b5-/+) 17.Qd3 (better is 17.Qg4!?=+) 17…Nf4–+ (18.Ne4 Nd3 19.Bd3 de4 20.Be4 Qh4–+) 0–1. Popov,Vasil – Dragiev,Veselin (2330), Sofia Baharov op, 1995.

8.h3 Bf3 9.Bf3 e5 =.

8.h3 Bh5 9.c4 ab4 10.ab4 Ra1 11.Ba1 Qb4 12.Bc3 Qd6 13.g4 Bg6 14.cd5 Nd5 15.g5 Nc3 16.Nc3 e6 17.d3 Be7 18.Ne4 Be4 19.de4 Qd1 20.Kd1 Nc5 21.e5 Ne4 22.Ke1 Ng5 23.Ng5 Bg5 24.f4 Be7 25.Kd2 Kd7 26.Ra1 Rd8 27.Ra7 Kc7 28.Ke1 Bc5 29.Ra2 Be3 30.Bg4 Bf4 0–1. Kellerer – Mrkvicka, corr, 1984.

6.c4 ab4 7.Be5 ba3 8.Bb8 Rb8 9.Na3 Bc5 (9...Ra8 10.Rb1 Qc5 11.Nc2=+) 10.Nc2= d5 11.Nf3 Bg4 (11...Bf5 12.cd5 Nd5 13.d4=) 12.d4 Bf3 13.gf3 Be7 (13...Bb4 14.Nb4 Qb4 15.Qd2=) 14.Qb1 (14.c5 Qd8=) 14...Qc7 15.c5 (15.Ra7 Bd6=) 15...0-0 (15...b6!? 16.cb6 Rb6 17.Ra8 Bd8=+) 16.Bd3 (16.Ra7!?=) 16…b6=+ (17.cb6 Rb6-/+). Silva Junior – Blaszczak, corr 3GMM–59, 1996.

6.d4 ed4 7.cd4 ab4 8.Qb3 d5 -/+.

6.d4 ed4 7.ed4 =.

6.d4 ed4 7.Qd4 Qd4 8.ed4 =+.

6.Nf3 e4 7.Ne5 d5 8.Qa4 (8.c4 ab4 9.cd5 cd5=+) 8...Nbd7 9.c4 Nc5! 10.Qc2 (10.bc5 Qb2 Pinning (10...Qb2 Deflection)) 10...ab4 11.ab4 Ra1 12.bc5 (12.Ba1 Qb4 13.Bd4 Qb3-/+) 12...Qa7 13.Be2 (13.Ba1? Qa1 14.d4 ed3 15.Nd3 dc4-+) 13...Ra5 14.cd5 Qc5 (worse 14...Nd5 15.Qe4 Nf6 16.Qf4 Rc5 17.Ba3=+; 14...Bc5?! 15.dc6 0-0 16.Nc3 Be3 17.fe3 (17.Ne4? Bd4 18.Nf6 gf6-+) 17...Re5 18.Ne4 Re4 19.Bf6=+; 14...cd5?! 15.Bc3 Rc5 16.Qb2-/+) 15.Nc3 cd5 16.Bb5 Bd7 17.Nd7 Nd7 18.d4 (18.Qb3 Bd6 19.0-0 Qb4-/+) 18...Qb4 19.Qe2 Be7 20.0-0 Qd6 21.f3 (21.Qh5 0-0 22.Nd5 g6 (22...Rb5 23.Ne7 Qe7 24.Qb5+=) 23.Ne7 Qe7-+) 21...ef3 22.Qf3 (22.Rf3 Qe6-+) 22...0-0 23.Qd5 (23.Bd3 Nf6-+) 23...Qd5 24.Nd5 Bg5 (24...Rb5?! 25.Ne7 Kh8 26.Ba3-+) 25.Ne7 Be7 26.Bd7 Bg5 27.Re1 Ra2 28.Bc1 g6 29.Kf1 Rfa8 30.Re2? (30.Bg4 b5 31.Bf3-+) 30...Ra1 31.Re1 Rb1 32.Bd2 (32.Ke2 Be7-+) 32...Rb2 33.h4 (33.Bc3 Rc2 34.Bb4 Raa2-+) 33...Bh4 (worse 33...Rd2 34.hg5 Raa2 35.Bh3-+) 34.Rd1 0–1. Pierre – Kebab1, internet, 2020.

6.Qb3 d5 7.b5 cb5 (7...a4 8.Qa2-/+) 8.Qb5 Qb5 9.Bb5 Bd7 10.a4 (10.Be2 Nc6=) 10...Nc6 (10...Bb5!? 11.ab5 Nbd7-/+) 11.Nf3= Bd6 12.0-0 0-0 (12...e5 13.c4 dc4 14.Bc4=+) 13.c4 Rac8 (13...dc4 14.Na3=) 14.cd5 (14.Bf6!? gf6 15.cd5 ed5 16.Nc3+=) 14...Nd5= 15.Nc3 Ndb4 16.Ne4 Be7 17.Nd4 (17.d3 Nb8=) 17...Rfd8 18.Nc6 (18.Nf3 Na7 19.Bd7 Rd7=+) 18...Bc6 (worse 18...Nc6 19.Rfc1=) 19.Rfc1?? (better 19.Bc6 Rc6 20.d4=+) 19…Be4-+ 0–1. RichardSommer (1930) – Avamposto (1955), lichess.org, 2020.

6.d4 d5 7.Nf3 =.

6.d4 Be7 7.Nf3 0-0 (7...d5 8.Nbd2=) 8.Bd3 d6 (8...d5 9.Qc2=) 9.0-0 Bd7 (9...ab4 10.cb4 Nbd7 11.Qc2+=) 10.Nbd2+= Rc8 (10...ab4 11.ab4 Ra1 12.Qa1+=) 11.Rc1 (11.Nc4 Qd8 12.Na5 b6+/–) 11...Na6 (11...ab4 12.cb4 Qd8+=) 12.Ba6 (better is 12.Nc4!? Qd8 13.Na5+/–) 12...Ra6= (< 12...ba6 13.Nc4 Qc7 14.Na5+=; 12...Qa6?! 13.e4=) 13.Qe2 (13.e4 ab4 14.cb4 Qb5=) 13...ab4 (13...c5 14.dc5 dc5 15.Ne5=+) 14.ab4 (14.cb4 Ra4=) 14...Ra2 (14...c5 15.dc5 dc5 16.Ne5=+) 15.Rb1=+ Rca8 16.Qd3 h6 (16...Qa6 17.Qa6 R8a6 18.e4=+) 17.Rfe1 (17.e4 Qa6 18.Qc2 c5=+) 17...c5 (17...R8a7 18.e4=+) 18.dc5 (18.bc5 dc5 19.Ba3 Qa6 20.Qa6 Ra6 21.Bc5 Bc5 22.dc5 Bc6=) 18...dc5=+ 19.Nc4 (19.c4!? Bc6 20.bc5 Qc5 21.Ra1=+) 19...Qa6-/+ 20.Nce5 Bb5 (better is 20...Ba4!? 21.c4 cb4-/+) 21.c4= Be8 22.b5 Qa5 23.Bc3 Qc7 24.Ra1+= Nd7 25.Ra2 Ra2 26.Ra1 Ra1= 27.Ba1 Qa5 28.Bc3 Qc7 29.Nd7 Bd7 30.Ne5 Be8= 31.h3 Bf6 32.Nf3+= Bc3 33.Qc3 Qd6 34.Qe5+/– Qe5 35.Ne5 f6 36.Nd3 b6 37.f3 Kf7 38.Kf2 Ke7+= 39.e4 Kd6 40.Ke3 Bd7 41.g4 g6 42.h4 f5 43.ef5 ef5 44.gf5 Bf5= 45.Nf4 Ke5 46.Nd5+- Kd6 47.Nb6 Be6 48.Kd3 Kc7 49.Na4 Bd7? 50.Nc5 Bf5 51.Kd4 Kb6 52.Ne4 (52...Be6 53.f4+-) 1–0. alfilrabioso (1885) – Eralos (1830), Buho21.com, 2006.

6.Nf3= d5 7.Qc2 Nbd7 (7...Bd6 8.Be2+=) 8.d4 Ne4 (8...Bd6 9.c4 dc4 10.Ne5 ab4 11.Nc4=) 9.Bd3= f5 10.Nbd2 Be7 (10...ab4 11.cb4 (11.Ne4? fe4 12.ab4 Ra1 13.Ba1 ed3 14.Qd3 Nf6-+; 11.ab4?! Ra1 12.Ba1 Bd6=) 11...Bd6 12.0-0= (worse is 12.Ne4 fe4 13.Be4 de4 14.Qe4 Nf6-+)) 11.Nb3 (worse is 11.Ne4 fe4 12.Be4 de4 13.Qe4 Nf6-/+) ½–½. Kukel,I – Tornai,I, Budapest, 2000.

6.Nf3= d5 7.Be2 Bd6 =.

6.Nf3 d5 7.Be2 Be7 (7...Bd6 8.Qa4=+) 8.0-0= Nbd7 9.Qc2 e5 10.d3 0-0 11.Nbd2 Qc7 12.e4 Nb6 (12...b5 13.Rfc1=+) 13.d4 de4 (13...ed4 14.e5 Ne4 15.Ne4 de4 16.Qe4 dc3 17.Bc3=) 14.Ne4 (14.Ne5 Bf5+=) 14...ed4= 15.Nd4 Nbd5 16.Nf6 Bf6 (< 16...gf6 17.c4 Nf4 18.c5+/–) 17.Bf3 (17.Bd3 Kh8=) 17...Nf4 (17...ab4 18.c4 b3 19.Nb3 Bb2 20.Qb2=) 18.Ne2 (18.Rfe1 Rd8=) 18...Be6 19.Nf4 Qf4 20.Be4 g6 21.g3 Qc7 22.Bd3 (22.Rfe1 Rfe8=) 22...Rfd8 23.Rfd1 Rd7 (23...b5 24.Be4=+) 24.c4 Bb2 25.Qb2 Rad8 (25...ab4 26.Qb4 (< 26.ab4 Ra1 27.Qa1 Qd8-/+) 26...Bg4 27.Rd2=+) 26.Qe2 (26.Qc3 ab4 27.ab4 c5=) 26...ab4 27.ab4 Rd4 28.Qc2 Qd7 (28...Qe7!?=+) 29.Be2= Bf5 30.Qc3 Rd1 31.Rd1 Qe7 32.Rd8 Qd8 33.c5 Qd5 34.Bf3 Be4 35.Be4 Qe4 36.h4 (36.h3 h6=) 36...h5 37.Kh2 Kf8 38.Qd2 Kg7 39.Qb2 Kh7 40.Qd2 Qf3 (40...Kg7 41.Kg1=) 41.Qe3 (better is 41.Kg1!?+=) ½–½. Asmund,Erik – Jensen,Jan K, 21st North Sea Cup, 2006.

6.Nf3 Be7 7.d4 0-0 8.Nbd2 d6 9.Bd3+= Nbd7 10.0-0 Qc7 11.c4 (11.Qc2 b6+=) 11...b6 (11...ab4 12.ab4 Ra1 13.Qa1+=) 12.Qb3+= a4 (12...h6 13.h3+=) 13.Qc2 Bb7 (13...g6 14.Rfe1+=) 14.h3 (14.Rfe1 g6+=) 14...h6 15.Rac1 (15.Rfe1 c5+=) 15...e5 (15...c5 16.Bc3+=) 16.Rcd1 (16.Rb1 Rfe8+=) 16...ed4 (16...c5 17.bc5 bc5 18.d5+=) 17.ed4 Rfe8 18.Rfe1 d5 (18...Nh5 19.Re3+=) 19.Ne5 Ne5?? (better 19...c5 20.dc5 bc5 21.cd5 Bd5+-) 20.de5+- (20.Re5?! Bd6+=) 20...Nd7 (20...Nh5 21.cd5 Bg5 22.d6+-) 21.cd5 Bg5 (21...Bf8 22.Nf3 c5 23.Bf5+-) 22.Nf3 Bf4 (22...c5+-) 23.d6 Qd8 (23...Qc8 24.Qc4 Be5 25.Ne5 Ne5 26.Re5 Re5 27.Be5+-) 24.Bc4 b5 (24...c5 25.Qf5 Bf3 26.Bf7 Kh8 27.Qf4 Bd1 28.e6+-) 25.Ba2 Qb6 (25...c5 26.Qf5 c4 27.Qf4 Nf8+-) 26.e6 fe6 27.Re6 Kh8 (27...Re6 28.Be6 Kh8 29.Qg6 Be5 30.Ne5 Qf2 31.Kf2 Nf6 32.Nf7 Kg8 33.Ng5 Kh8 34.Bf6 gf6 35.Qf6) 28.Bg7! Kg7 (28...Kg7 29.Qg6) 29.Qg6 Kf8 (29...Kh8 30.Re8 Re8 31.Qe8 Kg7 32.Qf7 Kh8 33.Qg8) 30.Re8 Re8 31.Qf7 1–0. guestkafl – guestbkzc, internet free game, 2018.

6.f4 d6 =.

6.d4 ab4 7.cb4 d5 8.Bd3 =.

6.d4 d5 7.Bd3 (7.c4 Bg7=) 7...Bg7 (7...Bf5 8.Nf3=) 8.Nd2 0-0 (8...Bf5 9.Bf5 gf5 10.c4=) 9.h4 (9.Ngf3 Bg4=) 9...Re8 (9...Bg4 10.f3 Bd7 11.e4=+) 10.Ngf3 Bg4 11.Qc2 (11.Qb3 a4 12.Qc2 Nbd7=) 11...ab4 (11...Nbd7 12.0-0=) 12.cb4= Nbd7 13.Nh2 (13.0-0 Ra7=) 13...e5 14.f3 (14.Ng4!? Ng4 15.Be2=) 14...Be6-/+ 15.de5? (better is 15.g4-/+) 15...Qe3–+ 16.Kd1 Ne5 17.Re1 Qd3 18.Be5 Qc2 19.Kc2 Bf5 20.Kb3 Re5 21.Re5 Nd7 22.Ree1 Ba1 23.Ra1 Re8 24.Nhf1 h5–+ 25.Ng3 Bd3 26.Kc3-/+ Ba6 27.Kd4 g5 28.hg5 h4 29.Nf5 Re2 30.Kc3 Rg2 31.f4 h3 32.Rh1 h2 33.Nf3 Ra2 34.N5d4 Ra3 35.Kb2 Re3 36.Rh2 Bd3 37.Rh6 Nb6 38.Ne5 Nc4 39.Nc4 dc4 40.Rd6 Be4 41.Rd8 Kg7 42.Rd7? c3–+ 43.Kb3 Bd5?? 44.Kc2?? Be4 45.Kb3–+ c2 46.Kb2 Re1 47.Nc2 Re2 48.Rb7 Rc2 49.Kb3 Rf2 50.b5 cb5 51.Rb5 Rf4 52.Re5 0–1. Kotlowski,Tomasz (1800) – Sciwarski,Mariusz (1980), I MFS Chojnice Poland, 2005.

7.d3 0-0 8.Be2 d6 9.Nbd2 Nd5 10.Nc4 Qc7 11.Qd2 =.

7.d3 0-0 8.Be2 d6 9.Nbd2 e5 10.0-0 (10.Nc4 Qc7+=) 10...Re8 (10...Be6 11.e4=) 11.Qc2 (11.Nc4 Qc7 12.Na5 e4+=) 11...d5 12.c4 Nbd7 (12...Bg4 13.cd5 (< 13.Be5 Re5 14.Ne5 Be2=+) 13...cd5 14.ba5+=) 13.Bc3 ab4 14.ab4 Ra1 15.Ra1 c5 (15...Qc7!?+=) 16.bc5+/– Qc5 (16...Qc7 17.Bb4+/–) 17.Ne5!+– Ne5 (17...Re5 18.d4) 18.Be5 (18.d4 Qc6 19.de5 Bf5+/–) 18...dc4? (18...Re5 19.d4 Qe7 20.de5 Qe5+–) 19.d4+– Qe7 20.Bc4 Bd7 (20...Be6 21.Ra7+–) 21.Ra7 Ng4 (21...Qb4 22.e4+–) 22.Bg7 Qh4 (22...Kg7 23.Rb7 Nf2 24.Rd7 Nh3 25.gh3 Qd7+–) 23.Nf3 (23…Qf2 24.Qf2 Nf2 25.Rb7+–) 1–0. guest970 – guest886, ICC, 2003.

7.d4 0-0 8.c4 =.

7.d4 0-0 8.Be2 d6 9.Nbd2 Nbd7 10.0-0 Re8 11.Qb3 (11.Nc4 Qc7+/-) 11...e5+= 12.de5 Ne5 13.c4 ab4 (13...a4 14.Qa2=) 14.ab4 Ra1 15.Ba1 Nfg4 16.h3 Nf3 17.Nf3 Ne5 18.Ne5 de5 19.c5 Qc7 20.Bc4 Be6 21.Rd1 (21.Be6 Re6 22.e4+=) 21...Qe7 (21...Bc4 22.Qc4 Rd8 23.Qc2=) 22.Rd6 (22.Be6!? Qe6 23.Qe6 fe6 24.Bc3+/-) 22...Bc4+= 23.Qc4 Rd8 24.Qd3 Re8 (24...Ra8!? 25.Bb2 e4+=) 25.Rd7+/- Qe6 26.Qd6 (26.e4 Rb8+/-) 26...Qa2 (better 26...Qd6!? 27.Rd6 Ra8=) 27.Bc3+/- Qb1 28.Kh2 Qc2?? (better 28...h6 29.Rb7 Qc2+-) 29.Qd2 (better 29.Rd8 Rd8 30.Qd8 Bf8 31.Be5 Qf2 32.Bd6+-) 29...Qd2+= 30.Bd2 Rb8 (30...e4 31.f3+=) 31.Bc3 (31.e4 h6+/-) 31...Kf8+= 32.g3 (32.f4 b6 33.fe5 bc5 34.bc5 Re8+=) 32...Ke8= 33.Rc7 (33.Rd1 b6 34.cb6 Rb6=) 33...Kd8?? (better 33...Bf6=+) 34.Rf7+- (34.Rf7 Bh6 35.Be5+-) 1-0. dannysmet (2145) - TimePress (2130), Rated Blitz game, lichess.org, 2020.

7.d4 d5 8.c4 ab4 9.c5 Qc7 =.

7.d4 d5 8.Nbd2 Bg4 9.Be2 0-0 10.0-0 Qc7 11.c4 Bf3 (11...ab4 12.ab4 Ra1 13.Qa1=) 12.Bf3 (12.Nf3 Qd6+=) 12...e6 13.Be2 Nbd7 14.b5 dc4 15.Bc4 c5 16.Rc1 Ne8 (16...cd4 17.Bd4 Qd6 18.a4+=) 17.a4 (17.Ne4 Nd6 18.Qf3 Nc4 19.Rc4 b6+=) 17...Nd6+= 18.Be2 Qb8 19.Nb3 cd4 20.Nd4 Nb6 (20...Rd8 21.Qc2+=) 21.Qb3+/– Ne4 22.Rfd1 Qe5 23.Ba3 (23.f4!? Qd5 24.Qa3+=) 23...Rfc8+= 24.Bf3 Rc1 25.Rc1 Nd2 26.Qc2 Nf3 27.Nf3 Qd5 28.Rd1 (28.e4!? Qd8 29.e5=) 28...Qc4=+ 29.Qc4 Nc4 30.Be7 Nb6 (30...Nb2!? 31.Rd7 b6=+ (< 31...Na4 32.Rb7 Nb2 33.b6+=)) 31.Rd8= Rd8 32.Bd8 Nc4 33.Kf1 Bc3 34.Ke2 (34.Nd4 e5 35.Nb3 b6=) 34...Nb2=+ 35.Ng5 (35.Nd2!?=+) 35...Na4-/+ 36.Kd3 Bb4 37.Ne4 Nb2 38.Kc2 Nc4 39.Kb3 Nd2 40.Nd2 Bd2 41.e4 Kf8 (41...f5 42.ef5 ef5 43.Ka4=) ½–½. Buczinski,Henryk – Dzieniszewski,Andrzej, Cieplice Zdroj Poland, 1976.

7.d4 d5 8.Be2 0-0 (8...ab4 9.cb4 0-0 10.Nc3=) 9.Nbd2 Qc7 (9...Bf5 10.0-0=) 10.ba5 (10.0-0 ab4 11.ab4 Ra1 12.Qa1 b5=) 10...Ra5 (10...Qa5 11.c4=) 11.c4 dc4 (11...Bg4 12.0-0=) 12.Nc4+= Rd5 13.0-0 Bf5 14.Nce5 Nbd7 15.Bc4 Ra5 (15...Rd6 16.Qb3 Nd5 17.Rfe1+=) 16.Bc3 (16.Qb3 Nd5=) 16...Raa8 (16...Ra7 17.Nd7 Nd7 18.Bb4=) 17.Nd7 Nd7 18.Qb3 (18.Bb4 Nb6 19.Bd3 Bd3 20.Qd3 Rfd8=) ½–½. Flazinski,Pawel – Hildingstam,Stefan, corr, 2002.

6.Qa4 Nbd7 7.e3 e6 8.d4 Bd6 9.Bd3 0-0 10.Nbd2 Qc7 11.0-0 e5 12.de5 Ne5 13.Ne5 Be5 14.f4 Bd6 15.c4 dc4 16.Nc4 b5 17.Qc2 bc4 18.Bc4 Re8 19.Bf6 gf6 1–0. tightfist (2385) – rirons (2465), net–chess.com, 2014.

6.Qc2 g6 7.e3= Bf5 8.Bd3 Bd3 9.Qd3 Nbd7 10.Qc2 e5 11.c4 e4 12.c5 Qa6 13.Ne5 Bg7 14.d4 Ne5 15.de5 Ng4 Black fights for the Initiative 16.e6 0-0 (better is 16...Ne5!? 17.ef7 Kf7-/+) 17.Bg7= Kg7 18.h3 (18.Qb2!? Nf6 19.ef7 ab4 20.Qb4=+) 18...Ne5-/+ 19.Qc3 f6 20.ba5 (20.Kd1 Nd3 21.Qd2 ab4-+) 20...Nd3 21.Kd2 Nf2 22.Rg1 (22.Rh2 Rfe8-+) 22...Qd3 (better is 22...Rfe8!?-+) 23.Qd3 Nd3 24.Nc3 Ra5 25.Nd5 (25.Rgb1 Nc5 26.Ne2-+) 25...cd5 26.c6 (26.Rab1 Nc5 27.Rgc1 Re8-+) 26...bc6 27.Rgb1 Nc5 28.Rb6 Re8 29.Rc6 (29.e7 Re7 30.h4 Rc7-+) 29...Nb3 (30.Kc3 Na1 31.Rc7 Kh6-+) 0–1. Dieng,Markus – Lutzenberger,Raimund (2300), Oberschwaben–ch, 1992.

6.d4 c4 7.Nbd2 Bf5 8.e4 Ne4 9.Be2 e6 10.0-0 Be7 11.Ne4 Be4 12.Ne5 f6 13.Nf3 0-0 14.Re1 e5 15.Nd2 Bg6 16.Nf3 Nd7 17.de5 Qc6 18.Nd4 Qc8 19.Ne6 Re8 20.Qd5 Nb6 21.Qd4 Qe6 22.Bg4 f5 23.Bf3 Rad8 24.Qe3 Rd3 25.Qf4 Na4 26.Rab1 b5 27.Red1 Nb2 28.Rb2 Rd1 29.Bd1 Bd6 0–1. Goan – Chatterjee, email 4AMM–08 1997.

6.d4 Bf5 7.e3 Nbd7 8.Bd3 (8.Nbd2 Be4=) 8...Bd3 (8...Bg4 9.h3 Bf3 10.Qf3-/+) 9.Qd3+= e6 10.Nbd2 Be7 11.0-0 0-0 12.Rfe1 (12.Nb3 ab4 13.cb4 Qc7+=) 12...Qa6 13.Qc2 Rac8 (13...b5 14.Rab1+=) 14.Rac1 (14.c4 Rfe8=) 14...b6 15.Qb1 (15.ba5 ba5 16.a4 Rc7=) 15...c5 16.Ba1 ab4 17.ab4 cb4 18.cb4 Qa3 19.b5 Rc1 20.Rc1 Ra8 21.Bc3 (21.Qc2 Qa4 22.Qa4 Ra4 23.Rc8 Nf8+=) 21...h6 22.h3 Qa4 23.Ne1 Ne8 24.e4 Nc7-/+ 25.ed5 Nd5 26.Qd3 Nc3 27.Rc3 Nf6 28.Rc7 Bb4 29.Ndf3 Qa1 30.Kf1 Nd5 31.Rc2?? Be1-+ 32.Ne1 Nb4 33.Qc3 Nc2 34.Qc2 Qd4 35.Qc6 Ra1 36.Qf3 Qb4 37.Qe2 Rb1 38.g3 Qb5 39.h4 Kf8 40.f4 Ke7 41.Kf2 Qe2 42.Ke2 Re1! 43.Ke1 Kd6 44.Kd2 Kd5 45.Kd3 e5 46.h5 ef4 47.gf4 g6 0–1. Ebert,Lutz (1815) – Zeeck,Detlef (1850), Mecklenburg VP LL2, 2002. (=1.Nf3 Nf6 2.b4 c6 3.Bb2 Qb6 4.a3 a5 5.c3 d5)

6.d4 g6 7.Nbd2 Bg7 8.e3 0-0 9.Bd3 Bg4 10.0-0 Nbd7 11.Qb3 Qc7 12.c4 dc4 13.Bc4 (13.Nc4 Bf3 14.gf3 ab4 15.ab4 Nd5=) 13...b5 Black prepares a4 14.Bd3 a4 (better 14...ab4!? 15.Rfc1 Be6=+) 15.Qc2+/- Nb6 (better 15...Rab8!?+/-) 16.Bb5!+- Rac8 (16...cb5 17.Qc5 Double attack (17.Qc7 Pinning; 17.Qc7 Deflection; 17.Qc5 Decoy)) 17.Rac1 (17.Rfc1 Nfd5 18.Bc6 Bd7+-) 17...Qd7? (better 17...Bf5 18.e4 Ne4 19.Ne4 cb5 20.Qc7 Rc7 21.Rc7 Be4 22.Re7 Bf3 23.gf3 Nc4+-) 18.Ne5 (18.Bc6 Qa7+-) 18...Qf5 19.Qf5 Bf5 20.Rc6 Rc6 21.Nc6 e6 (21...Re8 22.Rc1+-) 22.Ne7 Kh8 23.Nf5 gf5 24.Rc1 Nfd5 25.Nf3 Bf6 26.Rc6 Kg7 27.Kf1 Rb8 28.Nd2 Be7 29.Bc4 (29.Nc4!? Bg5+-) 29...Nc4 30.Nc4 Bf6 31.Ra6?? (better 31.Ke2 Be7 32.Ne5+-) 31...Rc8=+ 32.Na5 (better 32.Ke2!? Rc4 33.Kd2=+) 32…Rc2-/+ 0-1. levtraru (2135) - igo1 (2255), Rated Bullet game, lichess.org, 2015.

6.e3 Nbd7 7.d4 =.

6.e3 Bf5 7.d3 e6 8.Be2 Nbd7 9.0-0 Qc7 10.Nbd2= Bd6 11.Rc1 (11.c4 0-0 12.c5 Be7=) 11...0-0=+ 12.h3 Rfe8 (12...h6 13.Nh4=+) 13.Qb3 (better 13.g4!? Ng4 14.hg4 Bg4 15.Nb3+/-) 13...h6 14.c4 Bg6 15.cd5 ed5 16.Rfe1 ab4 17.ab4 Qb6 18.Bc3 Ne5 19.Ne5 Be5 (worse 19...Re5 20.Be5 Be5 21.d4+-) 20.Be5 Re5 21.Nf3 Ree8 22.Nd4 Nd7 23.Qc3 (23.Ra1 Qc7+=) 23...Ne5 (23...Ra4 24.Nc2=) 24.Ra1+= Qc7 25.Ra8 Ra8 26.Rc1 (26.f4 Nd7+=) 26...Qe7 27.b5 Rc8 (27...Ra2 28.Qb3 Qa3 29.Qa3 Ra3 30.bc6 bc6 31.Nc6 Nc6 32.Rc6 Bd3 33.Bd3 Rd3 34.Kf1=) 28.bc6+= bc6 29.Nb3 Nd7 30.d4 Qd6 (30...Bf5 31.Ba6 Rc7 32.Bb5+=) 31.Nc5 (31.Na5 Bf5+=) 31...Nc5+= 32.Qc5 Qc5 33.Rc5 (worse 33.dc5 Ra8=+) 33...Bf5 34.Bf3 Be6 35.g4 g5 36.Kg2 Kf8 37.Kg3 Ke7 38.h4 Kd6 39.hg5 hg5 40.e4 (40.Be2 Ra8=) 40...de4 (40...Rb8 41.Rc3=) 41.Be4 Attacking the isolated pawn on c6 41...Bd5?? (better 41...f6=) 42.Bd5+- cd5 (42...Rd8 43.Bf7 Ke7+-) 43.Rc8 1-0. allyouneedisluft (2505) - igo1 (2385), Rated Bullet game, lichess.org, 2016.

6.e3 Bf5 7.d4 e6=+ 8.Nbd2 Nbd7 (8...Be7 9.Be2=+) 9.Nb3 (9.Nh4 Bg6=) 9...ab4 (9...a4 10.Nbd2=) 10.ab4= Ra1 11.Qa1 Qc7 (11...Qd8!?=) 12.Qa8+= Qb8 (12...Nb8 13.Na5+-) 13.Qb8 Nb8 14.Ne5 (14.Na5 b6 15.Nc6 Nc6+-) 14...Ne4 (14...Nbd7 15.Nf3 b6 16.b5 cb5 17.Bb5=) 15.f3 (15.g4 Bg6+=) 15...Nd6= 16.g4 Bc2 (16...Bb1 17.Nc5=) 17.Nc5+= f6 (17...b6 18.Na6 Na6 19.Ba6=) 18.Ned3 (18.Kd2 fe5 19.Kc2 ed4 20.ed4 Kf7+=) 18...Kf7 (18...Ke7 19.Kd2 Bd3 20.Bd3=) 19.Kd2 Bd3 20.Bd3 b6 21.Na4 Nd7 22.e4 (22.Rg1 e5=) 22...Nc4 (22...h5 23.ed5 cd5 24.h4=+) 23.Bc4 dc4 24.Ke3 (24.Bc1 b5 25.Nb2 e5 26.de5 Ne5=+) 24...h5 25.h4 (25.gh5 Rh5 26.f4 e5 27.de5 b5-+) 25...hg4 (25...e5 26.g5=+) 26.fg4 g6 (26...e5 27.de5 b5 28.ef6 ba4 29.fg7 Bg7 30.h5-/+) 27.Kf3 (27.h5 gh5 28.Rh5 Rg8=) 27...Be7 (27...e5 28.h5=+) 28.Bc1= ½–½. Tuchtenhagen,Harald – Onasch,Gunnar, Mecklenburg VP LL1, 1999.

6.e3 Bf5 7.Be2 c5 8.0-0 Nc6 9.b5 c4 10.a4 Be4 (10...e6 A) 11.bc6? Qb2 12.cb7 Rb8-+ (12...Qb7?! 13.Na3=+); B) 11.Ra2 Ne7 12.Ba3=) 11.d4 (11.Ba3 Bf3 12.Bf3 Ne5=) 11...cd3=+ 12.Bd3 Bf3 13.Qf3 Ne5 14.Qe2 Nd3 15.Qd3 Rc8 16.Nd2 Qd6 17.Rfc1 (17.Ba3 Qc7=) 17...Ng4 18.Nf3 (18.Qf5 Qh2 19.Kf1 Ne3 20.fe3 Qh1 21.Kf2 Qh4 22.Ke2 e6+/–) 18...Rc4 (18...e5 19.e4 Rd8 20.ed5 Qd5 21.Qd5 Rd5 22.h3+/–) 19.Qe2 (19.Rd1 e6=) 19...e6 (19...Qc7 20.h3 Ne5 21.Nd2+/–) 20.h3= White fights for the Initiative 20...Ne5 21.Nd2 Rc8 22.c4 Rd8 (22...Nc4 23.Nc4 dc4 24.Rc4+/–) 23.c5+/– Qb8 24.Bd4 Rc8 (24...f6 25.Nb3 Nc4 26.Qh5 g6 27.Qh4+-) 25.Nb3 Ng6 (25...Nd7 26.e4 de4 27.Qe4+-) 26.b6 Ne7 27.Na5 f6 28.c6 (28.Qh5 Kd8+-) 28...Nc6+/– 29.Nc6 Rc6 30.Rc6 bc6 1–0. Vetter,Udo – Tschoepe,Frank, TT–09 '1.b4', 2003.

6.e3 Bf5 7.Be2 Nbd7 8.0-0 e5 9.d4 e4 10.Nfd2 ab4 11.ab4 Ra1 12.Ba1 Bd6 13.Na3 0-0 14.Bb2 Ra8 15.Qb3 Qc7 16.g3 b5 17.Ra1 Nb6 18.Nab1 Ra1 19.Ba1 Qc8 20.Qd1 Bg4 21.Bg4 Ng4 22.Kg2 Qf5 23.Qg1 h5 24.h3 Nf6 25.Qd1 g5 26.Na3 g4 27.h4 Qc8 28.Bb2 Ne8 29.Nc2 Ng7 30.Nb3 Nf5 31.Na5 Bb8 32.Qe1 Qc7 33.Bc1 (33.Qg1 Nd6+=) 33...Na4 (33...Nh4 34.Kf1 Nf3 35.Qd1-+) 34.Bd2 Nb2 (34...Nh4!? 35.Kf1-+) 35.Qh1 Ng3 36.fg3 Qg3 37.Kf1 Nd3 38.Qg2 Qh4 39.Ne1 Qf6 40.Ke2 Nb2 41.Bc1 (41.Bc1 Na4 42.Bd2-/+) 1–0. HFlew – BlackPanther, playchess.de, 2004.

6.e3 Bg4 7.Qc2 Nbd7 8.Be2 g6 9.ba5 Ra5 10.c4 Bf5 11.Qc1 Nc5 (11...dc4!? 12.Bc3 Ra4+=) 12.Bd4 e5 (better is 12...Bg7!?=) 13.Ne5+/– Bg7 14.Bc5 Qc5 15.d4 Qa7 16.Nc3 0-0 17.c5 Ra8 18.a4 Nd7 (better is 18...Ne4!? 19.Ne4 Be4=) 19.Nd7+/– Bd7 20.0-0 b6 21.cb6 Qb6 22.Rb1 Qd8 23.Qd2 Bf8 24.Bf3 Bf5 25.Rb2 Ba3 26.Ra2 Bb4 27.Rfa1 c5 28.Qb2 Bc3 29.Qc3 c4 30.Bd1 Qg5 31.Rb2 Bh3?? (better is 31...Be4 32.g3 Qf5+=) 32.f4+- (32.f4 Qh4 33.gh3 Qh3 34.Rb7+-) 1–0. Begna,Bozidar (2085) – Simon,Thomas (1950), Dortmund GER, Sparkassen Open, 2012.

6.e3 Bg4 7.Be2 Nbd7 8.0-0 e6 9.Qc2 Bd6 10.d3 0-0 11.Nbd2 Qc7 12.c4 (12.h3 Bh5 13.Nb3=+) 12...Ne5 (better 12...ab4 13.ab4 dc4 14.Nc4 Bf3 15.Bf3 Bh2 16.Kh1 Be5-/+) 13.c5+= Nf3 14.Bf3 (better 14.Nf3!? Be7 15.Be5+=) 14...Bh2=+ 15.Kh1 Bf3 16.Nf3 Ng4 17.Qc3 e5?? (better 17...f6=) 18.Nh2+- d4 19.Qd2 de3 20.fe3 Nh2 21.Kh2 e4 22.g3 ed3 23.Qd3 Rad8 24.Qf5 Rd5 25.Qf4?? (better 25.Qf3+-) 25...Rd2=+ 26.Kh3 Qf4 27.ef4 Rb2 28.Rfb1 Rb1 29.Rb1 Rd8 (better 29...g6=+) 30.Rd1?? (better 30.ba5 Ra8 31.Rb7+-) 30...Kf8 (better 30...Rd1 31.ba5 Ra1-+) 31.Rd8+- (31.Rd8 Ke7 32.Rb8 ab4 33.Rb7 Kd8 34.ab4+-) 1–0. alessandrocarvalhaes (1970) – jus1_f0r_fun (2020), lichess.org, 2020.

6.e3 Bg4 7.Be2 Nbd7 8.0-0 e6 9.d4 (9.h3 Bf3 10.Bf3 Bd6=) 9...Bd6=+ 10.Nbd2 Bb8 (10...0-0 11.Nb3=+) 11.c4 dc4 (11...Bf3 12.Nf3 (< 12.gf3 ab4 13.c5 Qc7=+) 12...dc4 13.Qd2=) 12.Nc4+= Qc7 13.Ncd2 (13.Nfe5 Be2 14.Qe2 ab4 15.ab4 Ra1 16.Ra1 Nd5=) 13...Ne4 14.Ne4 Bf3 15.Ng3 Be2 16.Qe2 h5 (16...0-0 17.b5=) 17.f4 Nf6 18.e4 (18...h4 19.Nh1=; 18.b5 h4 19.Nh1 cb5 20.Qb5 Qd7=). Wartig,Wolfgang – Kross, corr SOK–89–48, 1989.

6.e3 Bg4 7.Be2 Nbd7 8.d4 e6 9.Nbd2 Qc7 10.0-0 Be7 11.Nb3 a4 12.Nc5 Bf3 13.Bf3 Nb6 14.Bc1 Bc5 15.bc5 Nc4 16.Rb1 0-0 17.Rb4 (17.Qc2 Rfb8=) 17...b5 18.cb6 Nb6 19.Qd3 Rad8 20.Re1 h6 21.g3 c5 22.dc5 Nbd7 23.Qc2 (23.Ra4? Nc5 24.Qd1 Na4 25.Qa4 Qc3-+) 23...Nc5 24.c4 Qa5 25.cd5 (25.Rf1!?+=) 25...Nd5= (worse 25...ed5 26.Bb2 Nfe4 27.Rd1+-) 26.Bd5 Rd5 (worse 26...ed5 27.Bb2+-) 27.Rf1 Rfd8 (27...Nb3 28.Bb2=) 28.e4+= R5d7 29.Be3 Nd3 30.Qa4 Qh5 31.Rb5 Ne5 32.Bf4 (32.Re5!? Qe5 33.Bb6=) 32...Nf3= 33.Kg2 Qg4 34.Be3 (34.Rb8 Rb8 35.Qd7 Nh4 36.Kg1=+) 34...Rd1!! 35.h3 (35.Qd1 Nh4 Double attack (35...Nh4 Decoy); 35.Rd1 Nh4 Mate attack) 35...Nh4 36.Kh2 Qf3 (36...Qf3 37.gh4 Rf1 38.Rb1 Rb1 39.Qe8 Re8 40.Bc1 Qf2 41.Kh1 Rc1) 0–1. Bogdan,Dan (2380) – Martinovici,Ilie (2360), Iuliu Szabo Memorial, 2018.

6.e3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d4 e6 10.Nbd2 Bd6 (10...Nbd7 11.c4=+) 11.c4= dc4 (11...Qd8 12.c5 Bc7 13.b5 cb5 14.Bb5 Nc6 15.Nh4=) 12.Nc4+= Qc7 13.ba5 0-0 14.h4 (14.Nd6 Qd6 15.Ne5 Qd5+=) 14...Be4 (14...Ng4 15.Nd6 Qd6 16.Bc3=) 15.g5 Nd5 16.Bd3 Bd3 17.Qd3 Nd7 18.h5 c5 (18...Ra7 19.Qe4+=) 19.Rc1 Be7 20.Rh3 f6 21.h6 g6 22.Rg3 e5?? (better 22...f5+=) 23.de5+- Qc6 (23...Ne3 24.gf6 Bf6 25.Ne3 Qa5 26.Kf1+-) 24.gf6 (worse 24.ef6 N5f6 25.gf6 Rf6 26.Bf6 Nf6+-) 24...Bd8 (24...Bf6 25.Rd1 Rfd8 26.Qd5 Qd5 27.Rd5 Be7+-) 25.Rg6 Kh8 26.Rg7 N5f6 27.ef6 Nf6 (27...Ba5 28.Na5 Qe4 29.Qe4 Nf6 30.Rh7 Kg8 31.Qg6) 28.Rh7 Kg8 29.Qg6 1–0. Adlai – Etc132, internet, 2019.

6.e3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d4 e6 10.Nbd2 Be7 11.Ne5 Nbd7 12.Ng6 hg6 13.c4 ab4 14.c5 Qc7 15.ab4 Ra1 16.Ba1 e5 17.de5 Ne5 18.g5 Nh5 19.h4 Nd7 20.Qc2 Ng3 (better 20...0-0!?=) 21.fg3+/- Qg3 22.Ke2 Bg5 23.Nf3 (worse 23.hg5 Rh1 24.Bd4 Qg5-/+) 23...Bh4 (23...Bf6 24.Bb2+/-) 24.Rh2 (24.Nh4?! Rh4 25.Rh4 Qh4+=; 24.Rh4?! Rh4 25.Nh4 Qh4+=) 24...g5? (better 24...Qg4 25.Bh3 Qb4 26.Bd7 Kd7+-) 25.Rg2+- Qc7 26.Bg7 Rg8 (26...Rh5+-) 27.Qh7 Rg7 28.Qg7 b6 (28...Nf8+-) 29.Nh4 gh4 (29...bc5 30.Rf2 Nf8+-) 30.Qh8 Ke7 31.Qh4 Nf6 32.Rf2 Qe5 33.Rf6! Qb2 (33...Qf6 34.Qf6 Double attack) 34.Kf3 Qf6 35.Qf6 Kf6 36.cb6 1-0. PierrE – Wisdomer, internet, 2022.

6.g3 Nbd7 7.d4! e6! 8.Bg2 Bd6.

6.g3 Bf5 7.Bg2 Nbd7 8.Qc1 e6 9.0-0 c5 10.d3 Be7 11.Nbd2 0-0 12.ba5 (12.bc5 Bc5 13.c4 Rfc8=) 12...Ra5 13.c4 d4 14.Qc2 Rfa8 (15.e4 Bg4=) =. Grund,Karl – Baumann,R, corr ICCF WCup V, 1984.

6.g3 Bg4 7.Bg2 Nbd7 8.0-0 e5 9.d3 Bd6 10.Nbd2 0-0 11.h3 Bh5 12.g4 Bg6 13.Nh4 Rfe8 14.Ng6 hg6 15.e3 Rad8 16.Nb3 ab4 17.ab4 e4 (17...g5 18.e4=) 18.Nd4 (better is 18.g5!? Nh5 19.de4+=) 18...Ne5 19.de4 de4 20.Qc2 Bb8 (20...Nc4 21.Rfd1+=) 21.Bc1 (21.Be4 Ne4 22.Qe4 c5 23.bc5 Qb2+=) 21...Qc7 22.f4 (22.Be4?? Rd4! (22...Ne4?! 23.f3 Ng3 24.Rd1-+) 23.f3 Rd7-+) 22...ef3 23.Nf3 Nc4 24.Re1 Ne4 25.Bf1?? (better is 25.Rd1-/+) 25...Ne5 26.Ne5 (26.Qe4?? Nf3 27.Kg2 Qg3 28.Kh1 Qh2) 26...Qe5 27.Bg2?? (27.Qg2 Qc3 28.Bb2 Qb4-+) 27...Qh2 (27...Nc3?! 28.Bb2 Qh2 29.Kf1-+; 27...Qc3?! 28.Qc3 Nc3 29.Bb2-/+) 28.Kf1 Ng3 29.Kf2 Ne4 30.Kf1 Ng5 31.e4 Nh3 32.Be3 g5 33.Ra2 Nf4 34.Bf4 Bf4 35.Qe2 Qg3 36.Qf3 Qf3 37.Bf3 Rd3 38.Kf2 Rc3 39.Rb2 Rd8 40.b5 cb5 41.Rb5 Rd2 42.Re2 Re2?? 43.Ke2-/+ Rc7 44.e5 Re7 45.Bb7 Be5 46.Kf3 g6 47.Be4 Kg7 48.Rb7 Rb7 49.Bb7 f5 50.Bd5 Kf6 51.Bc4 Bd4 ½–½. kianas – craig4000, ChessWorld.net, 2012.

6.Qc2 e5 7.e4=+.

6.Qc2 g6 7.e3 ab4 8.cb4 Bg7 9.Be2 e5 10.0-0 0-0 11.d3 Be6 12.Nbd2 Nbd7 13.Nc4 Qc7 14.a4 Nd5 15.b5 cb5 16.ab5 N5b6 17.Rfc1 Nc4 18.dc4 Ra1 19.Ra1 Rc8 20.Qd2 (20.Nd2!?=) 20...Nb6=+ Increases the pressure on the backward pawn (20...Bc4? 21.Bc4 Nb6 22.Ba2+-) 21.Rd1 (21.c5!? dc5 22.e4-/+) 21...Bc4-/+ 22.Bc4 Nc4 23.Qb4 Qc5 24.Qc5? (better 24.Qb3-/+) 24...Rc5-+ (24...dc5?! 25.Bc3-+) 25.Ba1 Rb5 26.Kf1 Rb3 27.Ke2 b5 28.Nd2 Ra3 29.Nc4 bc4 0-1. kaalmakreel (2130) - Decus Tutamen (2810), ChessWorld.net, 2016.

6.e3 Bg4 7.Be2 Nbd7 8.0-0 e5 9.Qb3 ab4 10.ab4? (10.cb4 Be6 11.Qd1 e4=) 10...Ra1= 11.Ba1 e4 12.Nd4 Be2 13.Ne2 d5?? (better is 13...Qa6 14.f3 ef3-+ (14...Qa1 15.Na3 Qf1 16.Kf1+=)) 14.Na3 Bd6 15.Nc2 Qc7 16.h3 Ne5 17.Ncd4 0-0 18.Nf5 Qd7 19.Ned4 Ra8 20.Nd6 Qd6 21.Nf5 Qd7 (22.Nd4 Nd3-/+) 0–1. yaunootz – pierre (1890), internet, 2006.

6.e3 Bg4 7.Be2 Nbd7 (7...e5 8.h3 Be6 9.0-0=) 8.0-0 e5 9.h3 Bf5 10.Nh4 Be6 11.Kh2 (11.Nf3 Be7=+) 11...Be7 12.f4 Nd5 13.Qe1 ef4 (13...ab4 14.f5 bc3 15.fe6 cb2 16.ed7 Kd7 17.Ra2-+) 14.ef4 Qd8 (14...ab4 15.f5 bc3 16.fe6 cb2 17.ed7 Kd7 18.Ra2=+) 15.g3 Bh4 16.gh4 (16.f5 Be7=+) 16...Ne7 (16...Qf6 17.Qf2 ab4 18.f5 Qe5 19.Kg1 Bf5 20.Qf5 Qe2 21.Qf7 Kd8 22.Qg7-/+) 17.h5 Nf5 18.Bg4 0-0 19.Qe4 (19.h6 g6-/+) 19...Nf6 20.Qg2 Bd5 21.Qg1 (21.Qf2 Nh6 22.Be2 Re8-+) 21...Ng4-+ (22.Qg4 Re8-+) 0–1. Wartig,Wolfgang – Schreyer,Werner, corr ICCF Cup, 1989.

6.g3 c5 7.Qb3 (7.Bg2 e6=) 7...Nc6 (7...e5 8.Qc2-/+) 8.Ng5 (8.Qa4!?=+) 8...d5-/+ 9.Qa4 (9.d3 h6 (< 9...cb4 10.ab4 h6 11.Nh3=+) 10.Nf3 e5-/+) 9...Bd7 10.Ra2?? (better is 10.b5 Ne5 11.d3-/+) 10...Nb4-+ 11.ab4 Ba4 12.Ra4 e6 13.Bh3 Ra6 14.0-0 ab4 15.Ra6 Qa6 16.cb4 Qe2 17.bc5 h6 (18.Ne6 fe6-+) 0–1. kostovist (1640) – Garfield85 (1760), internet, 2006.

6.g3 e5 7.Bg2 =+.

6.d4 Bg7 7.Nbd2 d5 8.e3 Bg4 9.Bd3 Nbd7 10.h3 Bf3 11.Nf3 Qc7 12.0-0 0-0 13.c4 ab4 14.ab4 Ra1 15.Qa1 dc4 16.Bc4 Nb6 17.Bb3 Ra8 18.Qc1 Nbd5 19.Bc3 Ne4 20.Be1 e6 21.Nd2 Nec3 22.Qc2 Qb6 23.Bd5 Ne2 24.Kh1 ed5 25.Nb1? Qb5 26.Nd2 Bf8 27.f4 Bb4 28.Rf2 Ra1! 29.Nb1 Be1 30.Re2 Rb1 31.g4 Bd2! 32.Kg2 Qe2 0–1. Vasapollo – Loschi,E, 1982.

6.g3 Bg7 7.Bg2 0-0 8.0-0 d6 9.d3 Nbd7 10.Nbd2 ab4 11.cb4 Qc7 12.Re1 Nb6 13.Nb3 (13.Qc2 Na4=) 13...Na4 14.Bd4 (14.Bf6 Bf6 15.d4 e5=+) 14...e5 15.Be3 Nd5 16.Bd2 h6 (16...f5 17.Qc2=+) 17.Qc2 (17.e4 Ndb6=+) 17...Qe7 18.Rac1 Bg4 19.h3 Be6 20.e4 Nc7 (20...Ndb6 21.Na5=) 21.Rb1 (better 21.Na5!? Nb6 22.Be3+/-) 21...Nb5= 22.Qc1 (22.Na5!? Nb6 23.Ra1=) 22...Kh7 23.Qd1?? (better 23.g4-/+) 23...Na3 (23...Nac3!? 24.Bc3 Nc3 25.Qc2 Nb1 26.Rb1 Ra3 27.b5-+) 24.Ra1 Nb5 (24...Nb2!? 25.Qe2 Bb3 26.Bg5 hg5 27.Qb2-+) 25.d4 (better 25.Na5!? Nb6 26.Be3-/+) 25...ed4-+ 26.Nbd4 Nd4 (26...Nb2!? 27.Ne6 Nd1 28.Nf8 Rf8 29.Rad1-+) 27.Nd4 Nb6 (27...Nb2 28.Ne6 Nd1 (28...fe6?! 29.Qe2-/+) 29.Nf8 Qf8 (29...Bf8?! 30.Ra8 Nb2 31.Rb1=+; 29...Rf8?! 30.Rad1 Ra8 31.b5-+) 30.Rad1 Ra2-+) 28.Bc3-/+ Bc4 (28...Ra1 29.Ba1 Ra8 30.Bc3-/+) 29.Qc2 (29.Ra8 Ra8 (worse 29...Na8 30.Nc6 bc6 31.Bg7 Kg7 32.Qd4 Qe5 33.Qc4+=) 30.Nc6 bc6 31.Bg7 Kg7 32.Qd4 Qf6 33.Qb6 Ra2=+) 29...Rfe8 (29...Ra1 30.Ra1 d5 31.Ra7-/+) 30.Ra8=+ Ra8 (worse 30...Na8 31.Nc6 bc6 32.Bg7 Kg7 33.Qc4+=) 31.Ra1 Ra1 32.Ba1 Ba6 (32...d5 33.Qd2 de4 34.Nc6-+) 33.Bb2 Nc4 34.Bc3 Ne5 35.Kh2 Qc7 36.Nf3 Nf3 37.Bf3 Bc3 38.Qc3 Qe7 39.Bg2 Qe5 40.Qe5 de5 41.f4 f6 42.Kg1 Kg7 43.Kf2 Kf7 44.Ke3 Ke6 45.Bf3 Kd6 46.h4 g5 (46...c5 47.bc5 Kc5 48.Bg4-+) 47.hg5 hg5 48.fg5 fg5 49.Bd1 (49.Bg4 Bf1-+) 49...b6 (49...c5 50.bc5 Kc5 51.Kf3-+) 50.Kf3 Bc8 51.Ke3 c5 52.bc5 Kc5 53.Kd3 (better 53.Bb3-+) 53...b5 54.Bb3 b4 55.Ke3 (55.Bc4 Bb7 56.Be6 Ba6 57.Kc2 Bc4-+) 55...Ba6 56.Kf3 (56.Ba4-+) 56...Bc8 (better 56...Bc4!? 57.Bd1-+) 57.Ke3 Bg4 58.Kd3 (58.Bd5 Bd7-+) 58...Bf3 (58...Bd7 59.Bf7-+) 59.Ke3 Bh5 (59...Bg2 60.Ba4-+) 60.Kd3 (60.Be6 Bd1-+) 60...Be8 61.Ke3 Bd7 (61...Bb5 62.Bc2-+) 62.Kf3 (62.Bf7 Ba4 63.Kd3 Bb5 64.Kc2 Bc4-+) 62...Kb5 (better 62...Kd4 63.Kf2 Bc6-+) 63.Ke3 Kc5 64.Kd3?? (64.Kf3 Kd4 65.Kf2-+) 64…Bb5-+ (64...Bb5 65.Kc2 Kd4-+) 0-1. amirkhafan (2200) - pacal56 (2215), Rated Blitz game, lichess.org, 2014.

7.Qc2 d5 8.d4 Bf5 9.Bd3 Bd3 10.Qd3 Nbd7 11.Nbd2 0-0 12.0-0 Rfe8 13.Rab1 ab4 14.cb4 Qc7 15.Rfc1 Rac8 16.b5 Qd6 17.Ne5 c5 18.Nd7 Nd7 19.dc5 Nc5 20.Qe2 e5 21.Rd1 Qe6 22.Rdc1 Qb6 23.Rc2 Na4 24.Rbc1 Rc2 25.Rc2 Nb2 26.Rb2 Qc5 27.Ra2 Ra8 28.Qd3 Rc8 29.g3 e4 30.Qb1 Qc1 31.Qc1 Rc1 32.Kg2 Rc3 33.a4 Bf8 34.Nb1 Rb3 35.Nd2 Rc3 36.a5 Rc5 37.a6 ba6 38.ba6 Rc8 39.a7 Ra8 40.Nb3 f5 41.Nd4 Bc5 42.Nb5 Kf8 43.Ra6 Ke7 44.h4 Kd7 45.Rf6 1–0. tightfist (2470) – blackdogs (2490), net–chess.com, 2014.

7.Be2 0-0 8.0-0 d5 9.d3 Bg4 10.Nbd2 Nbd7 11.Rb1 (11.Nd4 Be2 12.Qe2 c5=) 11...ab4 12.cb4 Rfe8 (12...e5 13.Ne5 Ne5 14.Be5 Be2 15.Qe2 Ra3 16.d4=) 13.a4 (13.Bd4 Qb5 14.Ra1 e5=+) 13...e5=+ 14.a5 Qb4 (14...Qb5 15.d4 Qb4 16.de5=) 15.Ne5= Be2 (15...Re5 16.Be5) 16.Qe2 Ne5 17.Be5 Qa5 18.Bf6 Bf6 19.Rb7 Reb8 20.Rb8 Rb8 21.d4 Rb2 22.Nc4 Re2 23.Na5 Rc2 24.Rb1 c5 25.dc5 d4 (25...Rc5 26.Nb7 Rc2 27.Nd6=+) 26.ed4 (26.c6!?+=) 26...Bd4= 27.c6 ½–½. Demoulin,Joachim (2080) – Bunzmann,Dimitrij, Glorney Cup U20, 1995.

7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2 ab4 11.cb4 Qc7 12.Nb3 b6 13.Qd2 Ne4 14.Qc2 Ndf6 15.Rfc1 Bd7 16.Ne5 Bf5 17.Qc6 Qc6 18.Rc6 Rfb8 19.Rcc1 Nd6 20.Nc6 Rb7 21.Bf3 Nfe4 22.h3 Nc4 23.Be4 Be4 24.a4 Nb2 25.a5 ba5 26.Nba5 Rc7 27.f3 Bf5 28.Kf1 Nd3 29.Rc3 Nb2 30.Rac1 Na4 31.Rb3 Nb6 32.Rbc3 Nc4 33.Nc4 Rc6 34.Ne5 Rc3 35.Rc3 Be5 36.de5 Ra1 37.Kf2 Ra2 38.Kf1 Rb2 39.g4 Be6 40.b5 Rb5 41.f4 h5 42.Kf2 hg4 43.hg4 Bg4 44.Kg3 Bf5 45.Rc7 e6 46.Rc8 Kg7 47.Rd8 Rb3 48.Ra8 Re3 49.Kf2 Re4 50.Kf3 Re1 (time, 0–1). JPVAAST – JHW, fics, 2001.

7.Be2 0-0 8.0-0 d5 9.d4 Bf5 10.Ne5 (10.Nbd2 ab4 11.Qb3 Qc7 12.cb4 Nbd7=) 10...Na6 (10...ab4 11.cb4 Nbd7 12.Nd7 Nd7 13.Nc3=+) 11.Bd3 (11.Nd2 h6=) 11...Bd3 12.Qd3 (12.Nd3 Nc7=) 12...Nc7 (12...ab4 13.cb4 c5 14.dc5 Nc5 15.Qe2=) 13.Qe2 (13.Nd2=) 13...Ne4 (better is 13...ab4 14.cb4 Nce8=) 14.Nd7+/– Qa7 (14...Qb5 15.Qb5 Nb5 16.Nf8 Kf8 17.f3+/–) 15.Nf8+- Rf8 16.Nd2 Nd6 (16...Nd2 17.Qd2 Nb5 18.Qe2+-) 17.a4 (17.f4 f5+-) 17...e5 18.de5 Be5 19.b5 (19.Nb3 b6+-) 19...cb5+/– 20.ab5 Ncb5 21.Nf3 Bc3+= 22.Bc3 Nc3 23.Qc2 Rc8 24.Ne5 Qa6 25.Kh1 Nce4 26.Qb3?? Nd2-+ 27.Qd5 Nf1 28.Nd7 Nf5 29.Nf6?? Kg7 30.Qe5?? Qf6 31.Qa5 Nd2 32.Rd1 Ne4 33.Kg1 Qh4 34.Qa1 Kh6 35.g3 Qh5 36.Re1 Nd2 37.Rb1 Qf3 38.Qa4 Nb1 39.Qf4 Qf4 40.ef4 0–1. bloodymama – merriman, Caissa's Web, 2004.

7.Be2 0-0 8.0-0 d6 9.d4 Nbd7 10.Nbd2 ab4 11.ab4 Ra1 12.Qa1 d5 13.Qa5 Re8 14.Ra1 Qa5 15.Ra5 e5 16.de5 Ne5 17.Ne5 Re5 18.c4 Re8 19.Bd4 Ne4 20.Ne4 de4 21.Bg7 Kg7 22.Ra8 Bd7 23.Re8 Be8 24.c5 f5 25.Kf1 Bf7 26.Ke1 Kf6 27.Kd2 Ke5 28.Kc3 g5 29.Bd1 h5 30.g3 h4 31.Be2 Be8 32.Kd2 Bd7 33.Kc3 f4 (33...h3!?=) 34.ef4+= gf4 35.gf4 (35.gh4!? f3 36.Bc4+/–) 35...Kf4= 36.Kd4 Bh3 37.Bh5 Bf1 38.Bd1 Bg2 39.Bh5 Bf3 40.Bg6 Bh1 41.Bh7 (41.Bh5!?=) 41...Bg2-/+ 42.Bg6 Kf3 43.Be4 Kf2 44.Bf5 h3 45.Bc8 Kg1 46.Ke3 Bf1 47.Bb7 Bb5 48.Kf3 Kf1?? (better is 48...Kh2 49.Kf2 Ba4=) 49.Bc8+- Ke1 50.Bh3 Kd2 51.Ke4 Kc3 52.Ke5 Kb4 53.Kd6 Kc3 54.Bf5 Kd4 55.h4 Be2 56.Bg6 (56.Bg6 Bc4 57.h5+-; worse is 56.Kc6 Ke5 57.Bg6 Bf3 58.Kd7 Bg4 59.Kc7 Bf3+-) 1–0. Mitrovic,Zivadin (2185) – Desnica,Vladan (2270), Stari Banovci SER, Vojvodina Ch Div2, 2013.

7.Be2 d5 8.0-0 0-0 9.d3 Bf5 10.Nbd2 Nbd7 11.Nd4 e5 12.Nf5 gf5 13.Rb1 ab4 14.ab4 Rfd8 15.Qc2 Nf8 16.c4 e4 (16...Ra2 17.Ra1 Ra1 18.Ra1+-) 17.d4 (17.Bd4 Qc7 18.cd5 ed3 19.Bd3 Ng4+-) 17...Ng6 (17...Qb4!? 18.Bc3 Qe7=) 18.b5+= f4 19.Rfc1 Bh6 20.Nf1 Rab8 (20...cb5 21.c5 Qc6 22.Bc3+=) 21.Ba3+- Qa7 (21...fe3!? 22.fe3 Bf8 23.Bf8 Nf8+-) 22.Bc5 ½–½. Alvarado Diaz,Alejandro (2115) – Ragger,Markus (2670), 1st Torneo Blitz Internacional B, 2011.

5.e3 d5 6.Nf3 Nbd7 (6...Bf5 7.d3=+) 7.d4= e6 8.b5 c5 (8...Ne4 9.Bd3=) 9.Na3 (9.c4 Be7=) 9...c4=+ 10.Rb1 (10.Be2 Bd6=+) 10...Ne4 (10...Bd6 11.Be2=+) 11.Qc2 Be7 (11...Ndf6 12.Ne5=+) 12.Nd2 (12.Nc4 Qc7+-) 12...Ndf6 (better 12...Nd2!? 13.Qd2 Nf6=+) 13.Ne4= Ne4 14.Bc4 Nf2 (14...dc4 Deflection from e4 15.Qe4) 15.Qf2+- dc4 16.0-0 (16.Nc4?! Qb5 17.Qe2 Bd7=) 16...Bd7? (16...f5 17.Qe2+-) 17.Bc1?? (17.Qf7 Kd8+-) 17...Ba3? (better 17...0-0 18.Nc4 Qc7+-) 18.Qf7+- (18.Ba3?! f5+-) 18...Kd8 19.Ba3 Bb5 (19...Re8 20.Qg7 Kc8+-) 20.Qe7 (20.Qg7 Re8 21.Qg5 Kc8 22.Rb5 Qc6+-) 20...Kc8 21.Rf8 (better 21.Qg7!? Rd8 22.Qe5 Qc6 23.Rb5 b6+-) 21...Rf8 22.Qf8 Kd7 (22...Qd8 23.Qd8 Kd8 24.Rb5 Kc7+-) 23.Qa8 (23.Qa8 Qa6 24.Qf8+-) 1–0. Greisen,Flemming Dahl – Einarson,Erland, Politiken Cup Denmark, 2000.

5.cb4 Na6 6.e3 (6.a3!?=) 6...Qb4-/+ 7.Ba6 Qb3 8.ab3 ba6 9.Nf3 (better is 9.d3!?-/+) 9...Rb8-+ 10.0-0 Rb3 11.Ra2 Nf6 12.Nc3 e6 13.e4 Be7 14.Rb1 0-0 (14...d5 15.e5 Ne4 16.Ne4 de4 17.Nd4-+) 15.Ra5 Bb4 16.Rg5? (better is 16.Ra4 c5 17.e5-+) 16…Bc3 (16...Bc3 17.dc3 Ne4-+) 0–1. Anderson,George – Babb,Jeff (2130), Winnipeg TNT Jan op, 2004.

5.Qb4 Qb4 6.cb4 Nf6 7.Nc3 (7.Nf3 d5=) 7...d5 8.e3 Bf5 9.Nf3 Nbd7 10.Be2 (10.Nh4 Bg4=+) 10...e6 11.0-0 (better is 11.b5!?=+) 11...Bb4-/+ 12.Rac1 (12.a3 Bc5-/+) 12...Bc3-+ 13.Rc3 (13.Bc3 Ra2 14.Ra1 Ra1 15.Ra1-+) 13...0-0 (better is 13...Ra2!? 14.Ra1 Ra1 (< 14...Rb2 15.Ra8 Ke7 16.Rh8-/+) 15.Ba1 Ke7-+) 14.a3 Ne4 15.Rb3 Nec5 16.Rc3? (better is 16.Rb4-/+) 16...Ne4?? (better is 16...Na4 17.Rb3 Ndc5-+ (17...Nb2?! 18.Rb2 Rfb8 19.Ra1-/+)) 17.Rb3-/+ Nec5 (better is 17...b5-/+) 18.Rc3-+ Ne4?? (better is 18...Na4 19.Rb3 Ndc5-+ (19...Nb2?! 20.Rb7 Bd3 21.Bd3 Nd3 22.Rd7-/+)) 19.Rb3-/+ Rfb8 20.Rd1 Ndf6 (20...Nec5!? 21.Rb4 Nd3 22.Bd3 Bd3=+) 21.d3. METSAR – FatMaHa. ChessWorld.net, 2005.

5.a3 Nf6 6.Nf3 Bf5 7.d3 h6 8.Nbd2 Nbd7 9.c4 ab4 10.ab4 Ra1 11.Ba1 e6 12.Bc3 Be7 13.c5 Qc7 14.d4 0-0 15.e3 Re8 16.Be2 Bf8 17.0-0 e5 (17...b6!?=) 18.de5 Ng4 19.Nd4 Bg6?? (better 19...Qe5 20.Bg4 Bg4 21.Nc6 Qg5+-) 20.Bg4+- Ne5 21.Bd1 Qe7 (21...Bd3 22.Be2 Be2 23.Ne2+-) 22.N2f3 Ng4 (22...Bd3 23.Re1 Bc4 24.Qb1+-) 23.Bc2 Bh5 (23...Bc2 24.Qc2 Ra8 25.Qb2+-) 24.Re1 Qd7 25.h3 Nf6 26.b5 (better 26.Ra1!? Ne4+-) 26...Ne4 27.Ba1 Bf3 28.Nf3 Qe7 (28...Nc5 29.Qc3+-) 29.bc6 (29.bc6 bc6 30.Be4 de4 31.Ne5+-) 1–0. alessandrocarvalhaes (1820) – TheCasualPlayer (1815), lichess.org, 2019.

5.e3 a4 6.Qc2 e5 7.a3 Nf6 8.c4 Nbd7 9.Nc3 Qa7 (better is 9...d4!? 10.ed4 A) 10...Qd4? 11.Nd5 (11.Na4?! Qe4 12.Qe4 Ne4+/–) 11...Qa7 12.Nc7 Kd8 13.Na8+-; B) 10...ed4=) 10.cd5+/– Nd5 (10...cd5? 11.Nb5 Qb8 12.Nc7 Kd8 13.Na8 Qa8 14.Bb5+-) 11.Nd5 cd5 12.Bb5 Bd6 13.Qf5 Ke7 (better is 13...Qb6!? 14.Be5 Qb5 15.Bd6 Ra6+/–) 14.Qg5+- Nf6 15.Be5 Be5 16.Qe5 Be6 17.Ne2 Qb8 18.Qb8 (18.Qd4 Qa7+-) 18...Rhb8+/– 19.Nc3 Bd7 20.Bd7 Kd7 21.f3 Re8 22.Kf2 Re6 23.Rab1 Rc6 24.Rhc1 Ke6 25.b5 Rc4 26.d3 Rcc8 27.Rb4 Nd7 28.Ke2 Nb6 29.Kd2 f5 30.Rcb1 (30...Rc7 31.e4+/–; 30.e4!?+-) 1–0. Diener,Rudolf – Grund,Karl, corr 1981–83.

4.a4 e5 5.b5 Qb6 6.e3 Bd7 7.c4 f6 8.cd5 cb5 9.Qb3 b4 10.Bc4 Bd6 11.d4 e4 12.Nd2 f5 13.Be2 Nf6 14.Nc4 Qa6 15.Ne5 Qa7 16.Nd7 Nbd7 (< 16...Kd7 17.Rc1+=) 17.Bb5 0-0 18.Ne2 Nb6 19.Rc1 Kh8 (19...Nbd5? 20.Bc4 Kh8 21.Bd5 Nd5 22.Qd5+-) 20.Nf4 Bf4 21.ef4 Nbd5 22.Rc5 Rad8 23.0-0 b6 24.Rc6 Qb8 25.Re6 Qf4 26.Re5? (26.Bc4 Rd7-+) 26...Qg5 (26...Ng4 27.Qh3 Ne5 28.de5-+) 27.Qh3? (27.Rd1 e3! 28.f3 Nf4-+) 27...Qg4 (27...Ng4!? 28.Rd5 Rd5 29.Bc4-+) 28.Qg3 Qg3 29.fg3 g6 30.h3 Rc8 31.Rf2 Rc7 (31...Rfd8 32.Rd2-+) 32.Ba6? (32.g4 e3 (32...fg4 33.Rd5 e3 34.Rf6 Rf6 35.Rd8 Kg7 36.d5=) 33.Rf1 Rc2-+) 32...Ra7 33.Bc4 Ne3 (33...Rd8!? 34.g4 e3 35.Re2 fg4 36.hg4-+) 34.Bb3 Rd7 (34...Rc7 35.d5 Kg7 36.g4-+) 35.Rb5? (better is 35.d5 b5 36.ab5-/+) 35...Rb8?? (better is 35...Ned5-+) 36.d5= Kg7 37.g4 h6 38.Re2 (38.Bd4!? Rc8 39.Rb6 Rc1 40.Kh2=+) 38...f4-/+ 39.g3 g5 (39...fg3 40.Re3) 40.gf4 gf4 41.Kf2 Kg6 42.Be5? (better is 42.Re3 fe3 43.Ke3-/+) 42...Nfg4 43.hg4 Ng4 44.Ke1 (44.Kf1 Ne5 45.Re4-+) 44...Ne5 45.Re4 Nd3 46.Kf1 Nc5 47.Re6 Ne6 48.de6 Re7 49.Bc2 Kf6 50.Bf5 Rc8 51.Bg4 Rc1 52.Kg2 Ra1 (better is 52...Rg7!? 53.Rf5 Ke6 54.Rg5 Kf6 55.Rg7 Kg7 56.Be6-+) 53.Rb6 Ra4 54.Rb5 Re6 (better is 54...Ra3 55.Kf2-+) 55.Be6 Ke6 56.Rb6 (56.Kf3 Kf6-+) 56...Kf5 (57.Rh6 b3-+) 0–1. Satka,Martin – Augustat,Siegfried (1840), 9sen.LSEM Brandenburg, 2001.

4.b5 Nf6 5.bc6 Nc6 6.e3 e5 7.Bb5 Bd6 8.Ne2 0-0 9.d4 Bd7 10.de5 Ne5 11.Bd7 Qd7 12.0-0 (12.Ba3 Rfe8-/+) 12...Neg4 (12...Nc4 13.Bc1-/+) 13.g3 (13.h3 Ne5-/+) 13...Qf5 (13...Ne5 14.Ba3-/+) 14.Nf4 (14.c4!?-/+) 14...Bf4-+ 15.ef4 Rfe8 16.Nd2 Ra6 (16...Rac8 17.Rc1-+) 17.Nf3 Rae6 (17...Rb6 18.Rb1-/+) 18.Nh4 Qe4 19.h3 Nh6 20.Nf3 Qc4 21.Ne5 Qc8 (21...Qc5!?-/+) 22.g4= Nd7 23.Nd7 Qd7 24.c4 Ng4 25.f5 (25.Qd5!? Nf6 26.Qa5=+) 25...Re2-/+ 26.Qd5 Qd5 27.cd5 Nh2 (27...Nh6 28.Bc3 Nf5 29.Ba5 Ra8=) 28.Kh2= Rb2 29.Kg3 Kf8 30.Rfd1 Ree2 31.d6 Ke8 32.Rac1 Rec2 (32...Rf2?? 33.d7 Kd8 34.Rc8 Ke7 35.d8Q; 32...Ra2?? 33.d7 Kd8 34.Rc8 Ke7 35.d8Q) 33.Re1 Kd7 34.Rc2 Rc2 35.Re7 Kd6 36.Rb7 Rc7 37.Rb6 Kc5 38.Rb8 a4 39.f3 Rd7 40.a3 f6 (40...Rd3 41.Rb7 Ra3 42.Rf7=) 41.Rb4 Ra7 42.h4 ½–½. Hjortstam,Kurt – Pommerel,Wim, email 4AMM–F, 1998.

4.d4 ab4 5.cb4 e5 6.a3 ed4 (6...e4!?-/+) 7.Bd4 Nf6 8.Nf3 Bd6 9.g3 (9.e3 Bg4=) 9...0-0=+ 10.Bg2 Bf5 11.0-0 Nbd7 12.Nc3 Re8 13.Qd2 Nb6 14.Nh4 (14.Qg5 Bg6=+) 14...Bg4 (14...Nc4 15.Qc1 Bg4 16.e4-/+) 15.f3 (15.Qd3 Na4=+) 15...Bd7 16.Rfe1 (16.e4!? Nc4 17.Qc1-/+) 16...Nc4-+ 17.Qc1 Be5 18.Be5 Re5 (18...Qb6!? 19.Kh1 Ne5-/+) 19.e4 de4 20.fe4 (20.Ne4 Be6=+) 20...Ng4 21.Bf3?? (better 21.Nd1 Be6 22.Nf3-/+) 21...Qb6-+ 22.Kh1 (22.Re3 Nce3 23.Bg4 Ng4 24.Kh1 Nf2 25.Kg2 Bh3 26.Kf3-+) 22...Qf2 (better 22...Nf2 23.Kg1 Nd3 24.Kh1 Nc1 25.Rec1 Ra3 26.Ra3 Na3-+) 23.Bg4 Bg4 24.Qf4 Qf4 25.gf4 Ree8 (25...Rh5 26.Ng2-/+) 26.Kg2 (26.a4 Rad8=+) 26...f6 (26...Ra3 27.Ra3 Na3 28.Kg3-/+) 27.h3=+ Bh5 28.Nf5 Rad8 29.Rac1 (29.Ne3 Rd2 30.Kg1 Nd6-/+) 29...Bf7 (29...Na3 30.Kg3-/+) 30.Na4 (30.a4=+) 30...Nd2 (30...Na3 31.Nc5 Rd2 32.Kg3 b6-/+) 31.Red1?? (better 31.Nc5 Nb3 32.Rb1 Rd2 33.Kf3 Bh5 34.Kg3+=) 31...Ne4 (better 31...Re4!? 32.Nc3 Rf4-+) 32.Rd8-/+ Rd8 33.Ne7 (33.Nc3!? Nc3 34.Rc3-/+) 33...Kf8-+ 34.Nf5 (34.Re1 Rd2 (34...Ke7?! 35.Re4 Kd6 36.Re3-/+) 35.Kf3 Nd6-+ (worse 35...Ke7 36.Ke4 Bd5 37.Ke3-+)) 34...Bg6 (better 34...Rd3 35.Nc5 Nc5 36.bc5 Bd5 37.Kh2 Be6-+) 35.Nc5?? (better 35.Nh4 Rd2 36.Kg1-+) 35...Bf5 36.Ne4 (36.Nb7 Rd2 37.Kf3 Rd3 38.Kg2 Rg3 39.Kh2 Ra3-+) 36...Be4 37.Kf2 Rd3 38.Ke2 (38.a4 Bd5-+) 38...f5 39.Rg1 (39.a4 Rh3 40.a5 Rb3-+) 39...Rh3 40.Rc1 (40.Ra1 h6-+) 40...Ra3 41.b5 Ra2 42.Ke3 cb5 43.Kd4 (43.Rc5 b4 44.Rb5 Ra3 45.Kd2 Rf3-+) 43...Kf7 (better 43...b4 44.Kc4-+) 44.Ke5 (44.Rc3 Ra4 45.Ke5 b4 46.Rc7 Kg6-+) 44...Kg6 (better 44...b4 45.Rc7 Kg6 46.Rc1-+) 45.Rg1 Kf7 46.Rc1 Rc2 (46...b4!? 47.Kd4 b3 48.Rc7 Kg6 49.Rc3 Ra4 50.Kc5-+) 47.Rd1 Rc5 (better 47...b4 48.Rd7 Ke8 49.Rg7-+) 48.Kd4 (48.Kd6 Rc6 49.Ke5 Re6 50.Kd4 Bf3-+) 48...Rc7 (better 48...Rd5 49.Kc3 Rd1 50.Kb4-+) 49.Ke3 (49.Ke5 Re7 50.Kd6 Bc6-+) 49...Re7 (49...b4 50.Rd2 Rc3 51.Kd4 Rd3 52.Rd3 Bd3 53.Kd3-+) 50.Kf2 b4 51.Rc1 (51.Rd4-+) 51...b3 52.Rc3 b2 53.Rb3 b1Q 54.Rc3 Qb2 55.Kg3 (55.Rc2 Qc2 56.Kg3 Qg2 57.Kh4 Qg4) 55...Qc3 (55...Qg2 56.Kh4 Qg4) 56.Kh4 (56.Kf2 Qd2 57.Kg3 Qg2 58.Kh4 Qg4) 56...Qf3 57.Kg5 Qf4! 58.Kf4 g6 (58...g6 59.Ke3 Bd5 60.Kd4 Bc6-+) 0-1. dorian11 (2075) - zumpili (2210), Rated Bullet game, lichess.org, 2018.

4.d4 Nf6 5.e3 Bf5 6.Bd3 Bd3 7.Qd3 e6 8.Nf3 ab4 9.cb4 Bb4 10.Bc3 Na6 11.0-0 0-0 12.Nbd2 b6 13.Ne5 Qc7 14.Rfb1 c5 15.Ndf3? (15.a3!? cd4 16.Bb4 Nb4 17.ab4 Qe5 18.ed4-/+) 15...Ne4 (15...c4 16.Qc2 Bc3 17.Qc3-+) 16.Bd2? (better is 16.Bb4 Nb4 17.Qb3-+) 16...f6 (16...Nd2?! 17.Nd2 cd4 18.ed4-+) 17.Ng4 h5 18.Nh6 gh6 19.a3 c4 20.Qe2 (20.Qc2 Bd6 21.Bc3-+) 20...Nd2 21.Nd2 Bc3 22.Ra2 (22.Qh5 Bd2 23.Rb6 Qg7 24.Re6 Nc7-+) 22...Nb4! (23.Rb4 Bb4-+) 0–1. pascals1975 – Steinutz, ChessWorld.net, 2002.

4.e3 ab4 5.cb4 Bf5 (5...Nf6 6.b5=+) 6.Nf3= e6 7.Qb3 (7.b5 Nf6=+) 7...Nf6 8.d4 (8.Nd4 Bg6=+) 8...Nbd7 (8...Bd6 9.Be2=+) 9.Nbd2 Bd6 10.Be2 0-0 11.0-0 h6 (11...Ne4 12.Ne4 Be4 13.Rfc1=+) 12.h3 (12.Rfc1 Qe7=+) 12...Re8 (12...Qe7 13.a3=+) 13.b5 (13.Rfc1 Qb6 14.a3 Ra7=+) 13...c5-/+ 14.dc5 Nc5 15.Qd1 Na4 16.Be5 Be5 17.Ne5 Nc3 18.Qe1 Qd6 19.Ndf3 Ra3 20.g4 Be4-+ 21.Bd3 Bd3 22.Nd3 Nb5 23.Qb4 Qb4 24.Nb4 Nc3 25.Kg2 Rea8 26.Rfc1 Na2 27.Na2 Ra2 28.Rc8 Rc8 29.Ra2 Ne4 30.Nd4 g6 31.f3 Nd6 32.Kf2 Kg7 33.Ke2 Rc1 34.Ra8 Rh1 35.Rd8 Nc4 36.Rd7 Kf6 37.Rb7 Rh2 38.Kd3 Rh3 39.e4 Nd6 40.Rd7 Ne4 41.Ke3 Ng5 42.Rd6 h5 43.gh5 Rh5 44.Ra6 Rh4 45.Ne2 Rb4 46.Nd4 Rd4 47.Kd4 Nf3 48.Ke3 Ne5 49.Ra1 Kg5 50.Rg1 Ng4 51.Kd4 f5 52.Re1 Kf6 53.Kc5 f4 54.Kd4 Kf5 55.Kd3 f3 56.Rf1 Kf4 57.Rg1 f2 (58.Rc1 Nh2-+) 0–1. Gnirk,Hajo – Baumann,Fritz, corr SOK–88–17, 1988.

5.b5 Nf6 6.a4 Bd6 7.Be2 0-0 8.h3 c5 9.d3 d4 (9...Qe7!?-/+) 10.cd4 ed4 11.ed4 Re8 12.dc5 Bc5 13.d4 Bb4 14.Nd2 Bf5 15.Ngf3 Bd3 16.Ne5 Be2 17.Qe2 (17.Ke2!? Qd5 18.Ndf3=) 17...Nd5-/+ 18.Qf3 (18.0-0!? f6 19.Rad1-/+) 18...f6-+ 19.0-0 (19.Rd1 Nb6-+) 19...fe5 (19...Bd2 20.Nd3-+) 20.Nc4 (better 20.de5!? Rf8 21.Qd3-/+) 20...e4-+ 21.Qg3 (21.Qb3 Kh8-+) 21...Qf6 (21...Nd7 22.Ba3-+) 22.Ne5 (22.Qb3 Qe6-+) 22...Bd6 (22...Qe6 23.Qg4-+) 23.Qg4 (23.Rae1 Qe6 24.Re4 Nd7-/+) 23...Be5 24.de5 Qe6 (24...Qf4!? 25.Rfe1 Qg4 26.hg4 e3-+) 25.Qe4-/+ Nd7 26.Rad1 N7f6?? (26...Nb4 27.Bd4 Nf6 28.Qb1-/+ (28.Qb7? Nfd5-+)) 27.Qd3?? (better 27.Qf3 Re7 28.Rfe1+-) 27...Nb4 28.Qf3 Nfd5 29.Rd2 Rad8 (29...Rf8 30.Qb3 Rac8 31.Rfd1-/+) 30.Rfd1 Re7 31.Qe4 Red7 32.f4 (32.Qg4 Qg4 33.hg4 Nb6 34.Rd7 Rd7-+ (34...Nd7? 35.e6 Kf8 36.ed7+-)) 32...Ne7 (better 32...Rf8-/+) 33.Kh2?? (better 33.Rd7 Rd7 34.Rd7 Qd7 35.e6=+) 33...Rd2-+ 34.Rd2 Rd2 35.Bc3 Rd8 (35...Ra2 36.Qb7 Nbd5 37.Ba5-+) 36.Qb7 (36.Bb4 ab4 37.Qb4 g5-+) 36...Nf5 (36...Qc4 37.Qf3-+) 37.Qc7 (37.Qe4 Qb3-+) 37...Re8 (better 37...Rc8!? 38.Qa5 Qg6 39.g4 Rc3 40.Qd8 Kf7 41.Qd7 Ne7 42.f5-+) 38.Qa5 Qc4 (better 38...Nd5-+) 39.Qb4-/+ Qb4 (better 39...Qd3 40.Be1 Ne3-/+) 40.Bb4= (40.Bb4 Ra8 41.a5-/+). Abdullaevich (1925) – Vmsik (1915), lichess.org, 2019.

5.b5 Nf6 6.Qe2 (6.c4 Nbd7=+) 6...Bd6-/+ 7.d4 0-0 8.Qd3 (8.de5 Be5 9.Nf3 Bg4=+) 8...e4 9.Qd1 cb5 10.Bb5 Nc6 (10...Bd7 11.Bd7 Nfd7 12.Ba3 Ba3 13.Na3-/+) 11.Qa4 (11.Ba3 Bg4 12.Qa4 Nb4=+) 11...Bd7 12.Ba3 (12.Ne2 Na7 13.Bd7 Nd7-/+) 12...Ba3 (better 12...Nb4! 13.Bd7 Nd3 14.Ke2 Ba3 15.Na3 Nd7-/+) 13.Na3=+ Rc8 14.Ne2 Qc7 15.0-0 Ng4 16.g3 (16.Ng3 h5 17.Rfc1 h4=) 16...Qd6 17.c4 Nh2 18.Rfc1?? (better 18.Kh2 Qh6 19.Kg1=) 18...Nf3 19.Kf1 (19.Kg2 Bh3!! 20.Kh1 Bf1 21.Rf1 Qh6 22.Kg2 Qh2) 19…Bh3 0–1. Taulien,Christian (2110) – Luehrig,Walter (2160), remoteschach.de, 2002.

5.c4 =+.

5.Nf3 Bd6 6.a3 Nf6 7.Qc2 Bg4 (7...0-0 8.c4-/+) 8.Be2 (8.c4 Nbd7=+) 8...Nbd7 (8...e4 9.Nd4 Be2 10.Ke2-+) 9.h3 (9.d3 0-0=+) 9...Bh5 (9...Bf3 10.gf3 0-0-/+) 10.0-0? (10.d3 0-0=+) 10...Qe7 (better 10...e4 11.Nd4 Be2 12.Ne2 Ne5-+) 11.d3=+ e4 (11...0-0 12.Nbd2=+) 12.Nd4 (12.de4 de4 13.Nd4 Qe5=+) 12...Qe5-/+ 13.g3 0-0 14.Nd2 (14.de4!? Be2 15.Qe2 Ne4 16.Nd2-/+) 14...Be2 15.Ne2 Qh5 16.Nf4 Bf4 17.ef4 Qh3 (better 17...ed3 18.Qd3 Qh3-/+) 18.Rfe1? (better 18.de4 Ng4 19.Nf3 de4 20.Qe4-+) 18...Ng4-+ 19.Nf1 Ndf6 (better 19...ed3 20.Qd3 Qh1 21.Kh1 Nf2 22.Kg1 Nd3-+) 20.de4 Ne4 (20...de4 21.c4-+) 21.f3 Ng3 22.fg4 Qh1 (22...Qg4? 23.Qg2 Qf4 24.Ng3+-) 23.Kf2 Nf1 (better 23...Ne4 24.Re4 Qh4 (worse 24...Qe4 25.Qe4 de4 26.Ng3+=) 25.Kg2 A) 25...de4?! 26.Ne3=+ (26.Qe4? Qg4 27.Ng3 Rad8-+); B) 25...Qg4 26.Ng3 de4 27.Qe4 Rad8-+) 24.Ke2?? (better 24.Re2 Qh2 25.Kf1 Qf4 26.Kg1=+) 24...Rfe8-+ 25.Kd3 Qf3 26.Kd4 Qf4 27.Kc5 Qc4 28.Kd6 (28.Kb6 Qb5 29.Kc7 Rac8 30.Kd6 Rcd8 31.Kc7 Rd7 32.Kd7 c5 33.Kc7 Qc6) 28...Rad8 (28...Red8 29.Ke5 f6 30.Ke6 d4 31.Kf5 Qd5 32.Re5 Qe5) 29.Kc7 Rc8 30.Kd6 Red8 31.Ke5 Qg4 (31...f6 32.Ke6 d4 33.Kf5 Qd5 34.Re5 Qe5) 32.Rf1 f6 (32...f6 33.Rf6 gf6 34.Kf6 Rd6 35.Ke5 Re6) 0–1. Chaparro Grande,F (1610) – Ramirez Maillo,C (1730), 3rd Memorial Piedad Cambeiro Dominguez, 2016.

5.b5 Nf6 6.c4 e6 7.a4 Bb4 8.Ba3 0-0 9.Bb4 ab4 10.Qb3 cb5 11.cb5 Qa5 12.Nf3 Rc8 13.Qb2 Rc2 14.Qb3 Nbd7 15.d3 Rc1 16.Kd2 Rac8 17.Ra2 Nc5 18.Qb2 b3 19.Kc1 ba2 20.Qa2 Nd3 21.Kd1 Rc1 22.Ke2 Ne4 23.Nfd2 Ng5 24.f4 Re1# 0–1. Saili – BlackDemon (2610), FICS, 2013.

5.Nf3 e6 6.a3 Nf6 7.d4 Nbd7 8.b5 c5 (8...Qb6 9.a4=+) 9.Bd3 (9.c4 Rc8=) 9...Bg6 (9...Bd3 10.Qd3 c4 11.Qc2-/+) 10.0-0 (10.Be2 c4=+) 10...Bd6 (10...Bd3 11.Qd3 c4 12.Qc2=+) 11.a4 0-0 12.c4 Rc8 (12...Bd3 13.Qd3 Rc8 14.Nbd2=) 13.cd5 (13.Bg6 fg6 14.dc5 Nc5 (worse 14...Rc5 15.Ba3+/-) 15.Bf6 Qf6=) 13...ed5 (13...Bd3 14.Qd3 c4 15.Qc2 Nd5 16.Bc3=+) 14.dc5 (14.Bg6 fg6 15.dc5 Bc5+= (15...Rc5? 16.Ba3+-)) 14...Bd3= (14...Rc5? 15.Bg6 fg6 16.Ba3+-) 15.Qd3 Nc5 (worse 15...Rc5 16.Ba3+/-) 16.Qe2 Nfe4 17.Nd4 (17.Rd1 Re8=) 17...Qh4 18.g3 Qg5 19.Nd2 Rfd8 20.N2f3 Qh5 21.Kg2 Ne6 22.Rac1 Bc5 23.Nb3 N4g5 (23...Bb4!?=+) 24.Ng1 Qe2 25.Ne2 Bb4 26.Ned4 (26.Rfd1 Rc1 27.Rc1 Ne4+=) 26...Ne4= 27.Ne6 (27.Rfd1 Rc1 28.Rc1 N6c5 29.Nc5 Nc5=) 27...fe6 28.Rc8 (28.Rfd1 Rf8 29.f3 Nd6=) 28...Nf6?? (better 28...Rc8 29.Bd4 Rc2=+) 29.Rd8+- ½-½. XuMEPA (2040) - NinePawns (2095), Rated Bullet game, lichess.org, 2014.

5.a3 Bf5 6.d4 e6 7.Nf3 b5 (7...Nbd7!?-/+) 8.Nbd2= a4 9.h3 (9.Nh4 Bd6=) 9...h6=+ 10.Ne5 Qc7 11.g4 (11.Bd3 Bd3 12.Nd3 Nbd7=+) 11...Bh7-/+ 12.Bd3 Bd3 13.Nd3 Nbd7 14.Qf3 Bd6 15.h4 0-0-0 (15...e5 16.de5 Ne5 17.Ne5 Be5 18.g5=+) 16.Rc1 (better 16.g5!? hg5 17.hg5+=) 16...e5-/+ 17.de5 Be5 (17...Ne5 18.Ne5 Be5 19.g5-/+) 18.Ke2 Rhe8 19.Rhe1 (19.g5 Ne4 20.gh6 gh6 21.Qf7 Bd6=) 19...g5 (19...Nb6!?=+) 20.hg5 hg5 21.Qf5 (worse 21.Ne5 Qe5 22.Rh1 Kc7=+) 21...Kb8 (21...Kb7 22.Qg5 Ne4 23.Qf5=) 22.Qg5 Rg8 (22...Ne4 23.Qf5=) 23.Qf5+= Rg4 (23...Ng4 24.Rg1 Nh6 25.Qh5 Rg1 26.Rg1+-) 24.Rg1 (better 24.Ne5 Qe5 25.Qe5 Ne5 26.c4+-) 24...Rc4? (better 24...Rg1 25.Rg1 Bd6+=) 25.Nc4 dc4 26.Ne1 Nd5 27.Nf3 (27.Qf7 Kb7+-) 27...f6 (27...Bf6 28.Rgd1 N7b6 29.e4+-) 28.Rg7 Qd6 29.Nd4 N7b6 (better 29...Bd4!? 30.cd4 Nf8+-) 30.Qh7 1–0. combijack (1905) – willyvanilly (1945), gameknot.com, 2017.

5.Nf3 e6 6.b5 Bd6 7.c4 0-0 8.a3 Nbd7 9.bc6 bc6 10.Qc2 Qc7 11.Be2 e5 12.cd5 cd5 13.Qc7 Bc7 14.0-0 Rb8 15.Rc1 Bd6 16.Bc3 Nc5 17.Rd1 Nfd7 (17...Nb3 18.Ra2 Bg4 19.d3-/+) 18.a4 (18.d4 Na4 19.Ba5+= (19.de5?! Rb1 20.Rdb1 Nc3 21.ed6 Ne2 22.Kf1 Nc3+=)) 18...Nb3+= 19.Ra2 d4 (better is 19...e4!? 20.Nd4 Nd4 21.Bd4 Nc5+=) 20.ed4+= ed4 21.Bd4 Nd4 22.Nd4 Rb4? (22...Bb7 23.Nc3+/–) 23.Nf5 Bf4 24.Nc3 Bb7 25.Bb5 Nc5 26.d4 Ne4 27.Ne7 Kh8 28.Ncd5 Bd6 29.Nb4 ab4? 30.Nf5 Bf4 31.Rb2 Nc3 32.Ra1 Nd5 33.g3 Bg5 34.Nd6 Ba8 35.f4 Bf6 36.Rd2 Be7 37.Nf5 1–0. Bernhard,Alfred (1920) – Zemskyi,Evgen (1805), Ruhrgebiet playoff, 2004.

5.Nf3 Bg4 6.h3 Bh5 7.a3 Nbd7 8.d4 Bf3 9.Qf3 e5 10.de5 Ne5 11.Qd1 Bd6 12.Nd2 0-0 13.Be2 Re8 14.0-0 Qd7 (14...Qe7 15.b5=+) 15.Qc2 (15.c4 ab4 16.ab4 dc4 17.Nc4 Nc4 18.Bc4 Bb4=) 15...Rad8 (15...b5!?=+) 16.ba5= Qc7 17.c4 (17.a6 ba6 18.Ba6 Ng6+=) 17...Qa5= 18.cd5 Nd5 19.Nf3 Nf3 20.Bf3 Be5 21.Be5 Re5 22.Qb2 (22.Rfd1+=) 22...Qc3 (better 22...Re7!?=) 23.Qb7+/- Re7 24.Qa6 Qf6 (better 24...Re6!?+/-) 25.Bd5+- cd5 26.Qf6 gf6 27.Rfd1 Ra7 28.Rd4 Rda8 29.a4 Ra5 30.Rad1 (30.Kf1 Rc8+-) 30...Kf8 31.Rd5 Ra4 32.Rh5 (32.g4 Ra2+-) 32...Kg7 33.Rf5 Ra1 34.Ra1 Ra1 35.Kh2 Ra4 36.Kg3 Rb4 37.Rf4 Rb5 38.Kf3 Rc5 39.h4 Rb5 40.g4 h6 41.Ra4 (41.Rf5 Rb2+-) 41...Rb6 (better 41...f5!?+/-) 42.Ra5 Rc6 43.Kf4 Rd6 44.e4 Rb6 45.f3 Rc6 46.Kf5 Rb6 47.f4 (47.Ra8!? Rd6+-) 47...Rc6 48.g5 hg5 49.fg5 fg5 50.Kg5 Rc1 51.Ra7 (51.h5 Rg1 52.Kf4 Rf1 53.Ke3 Kh6+-) 51...Rg1 52.Kf5 Rf1 53.Ke5 (53.Kg4!?+/-) 53...Rh1+= 54.Kf4 (54.Kd5 Rh4 55.e5 Rh1+=) 54...Rh4 55.Kf3 (55.Kf5 Rh5 56.Kg4 Kg6=) 55...Rh6 (55...Kf6 56.Ra8=) 56.Kf4 Re6 (56...Rh4 57.Kf5+=) 57.Ke3 Rh6 58.Kf3 Re6 59.Kf4 Rh6 (59...Kf6 60.Ra8+=) 60.Kf3 (60.e5 Rh1+=) 60...Re6 61.Kf4 Rh6 62.Kf3 ½-½. XuMEPA (2035) - NinePawns (2100), Rated Bullet game, lichess.org, 2014.

5.a3 Nbd7 6.d3 e5 7.g3 (7.Nbd2 Bd6=+) 7...e4 8.Nd4 Bd6 9.Bg2 (9.de4 Ne4 10.Bg2 Ne5=+) 9...Ne5 10.de4 Ne4 11.Nd2 Nd2 12.Qd2 0-0 13.0-0 Nc4 14.Qc2 Re8 15.Rad1 (15.Rfe1 Qf6=+) 15...ab4 16.ab4 Ra2 17.Rb1 Bg4 18.h3 (better 18.Qb3!? Ra8 19.Qc2-/+) 18...Bh5-+ (18...Nb2? 19.hg4 Na4 20.Qa2 Nc3 21.Qa7 Nb1 22.Rb1+-; 18...Rb2?! 19.Rb2 Nb2 20.hg4=) 19.e4 de4 (19...Nb2?! 20.ed5 Bg6 21.Qb3 Bb1 22.Rb1-/+; 19...Rb2?! 20.Rb2 Nb2 21.ed5-/+) 20.Qb3 Rb2 (20...Nb2?! 21.Qa2 Nd3 22.Qa5=) 21.Rb2 Nb2 22.Qb2 Be5 (22...Qg5 23.h4 Qe5 24.Re1-/+) 23.Re1 Bg6 24.h4 h5 25.Qd2 Qd6 26.Qb2 (26.Rd1 Bf6-+) 26...Rd8 27.Nb3 (27.Be4 Bd4 28.cd4 Re8-+) 27...Qd3 28.Qc1 (28.Re3 Qd1 29.Kh2 Rd3-+) 28...Qc3 (28...Bc3?! 29.Bf1 Bd2 30.Bd3 Bc1 31.Be4 Be4 32.Re4-/+) 29.Qc3 (29.Nc5 Qb4 30.Ne4 Bf5-+) 29...Bc3 30.Rc1 (30.Re3 Rd1 31.Kh2 Rd3-+) 30...Bb4 31.Rc4 (31.Nc5 Bc5 32.Rc5 Rd1 33.Kh2 Kf8-+) 31...Rd1 32.Kh2 Be1 33.Be4 (33.Ra4 f5 34.Ra8 Kh7 35.Ra2-+) 33…b5 (33...b5 34.Bf3 bc4 35.Bd1 cb3 36.Bb3 Bf2-+) 0–1. rona81 (1985) – forsetinn (2360), gameknot.com, 2015.

5.e3 ab4 6.cb4 Bf5 (6...Bg4 7.a3=+) 7.a3= e6 8.Be2 Bd6 9.d3 (9.Nh4 Bb1 10.Rb1 0-0=) 9...Nbd7 (9...Bg4 10.0-0=) 10.Nh4 g5 (10...Bg6!?=) 11.Nf5+= ef5 12.Nc3 (12.Nd2 Qc7+=) 12...Qe7 (12...0-0 13.0-0+=) 13.Qd2 (13.0-0 0-0+=) 13...Rg8 14.0-0 Kf8 (14...f4 15.ef4 Bf4 16.Qd1=) 15.Kh1 (15.b5 Kg7+-) 15...Rg6 (15...Kg7 16.f4 g4 17.e4+=) 16.d4 (16.Rae1 Rh6 17.h3 g4+-) 16...Nb6 (16...Rh6 17.h3=) 17.Qc2 (17.b5 Ne4 18.Ne4 fe4 19.bc6 bc6=) 17...Rh6 18.h3 Ne4 19.Kg1 g4! 20.Bd3 (20.Bg4 fg4) 20...Bc7 (better 20...Ke8=+) 21.Be4? (better 21.Rfc1=) 21...fe4-/+ 22.g3 (22.b5 gh3 23.g3 Ke8-/+) 22...Rh3-+ 23.Kg2 (23.Qe2 Bg3! 24.Qg4 Bh2 25.Kg2 Rh6-+) 23...Qf6 The mate threat is Qf3 24.Qe2 Qf3 25.Qf3 ef3 26.Kg1 Re8 Threatening mate: Re6 27.Bc1 Bf4?? (27...f5 28.e4 f4 29.Bf4 Bf4 30.ed5 Bd2-+) 28.gf4?? (28.ef4 f5 29.Ne2-+) 28...Re6-+ Do you see the mate threat? 29.Ne2 fe2 30.Re1 Reh6 31.Re2 f5 32.Bb2 Nc4 33.Bc3 (33.b5 Nb2 34.Ree1 Rh1 35.Kg2 R6h2 36.Kg3 Rh3 37.Kg2 R1h2 38.Kf1 Nd3-+) 33…Nd6 (33...Nd6 34.e4 Rh1 35.Kg2 R6h2 36.Kg3 Rh3 37.Kg2 A) 37...Rc3?! A1) worse 38.Kh1 fe4 (worse 38...de4 39.d5=+) 39.Kg2 Rf3-/+; A2) 38.Rh1 fe4 39.Re3+=; B) 37...R1h2 38.Kf1 Rc3-+) 0–1. Kilpatrick,Robert – Ross,M, corr SCCA cand, 1988.

5.e3 e6 6.a3 Be7 7.d4 0-0 8.Be2 Nbd7 9.0-0 Re8 10.Qb3 (10.Nbd2 Qc7=) 10...Bf8 (10...b5 11.Qc2=+) 11.Rd1 Ne4 (11...a4 12.Qc2=) 12.c4 ab4 13.ab4 Ra1 14.Ba1 Qb6 15.c5 Qc7 16.b5 f6 (16...e5 17.Re1=) 17.Nc3+/- Nc3 18.Bc3 e5 19.Bf1 e4 20.Nd2 f5 21.g3 (21.Ra1 Nf6+/-) 21...g5 Black plans f4 22.Ra1 f4 23.Ba5 Qb8 24.bc6 bc6 25.Qb8 Nb8 26.Bc7 fe3 27.fe3 Bg4?? (better 27...Nd7+=) 28.Ra8+- Rc8 29.Bb8 (29.Rb8?! Rc7 30.Ba6 Kf7+=) 29...Be7 30.Ba6 Rf8 31.Bb7 Bd7 32.Bd6 (better 32.Nb3+-) 32...Bd6 33.cd6 Ra8 34.Ba8 Kf7 35.Nb3 Ke6 36.Nc5 Kd6 37.Bb7 Bg4 38.Ba6 h5 39.Kf2 h4 40.Be2 Bc8 (40...hg3 41.hg3 Be2 42.Ke2+-) 41.Bh5 hg3 (41...Bh3+-) 42.Kg3 (42.hg3?! g4+-) 42...Bf5 43.Bg4 Bg6 44.Bc8 (44.Ne6!? Be8+-) 44...Bh5 45.Bf5 Be2 (45...Ke7 46.Bg4 Be8 47.Bc8+-) 46.Ne6 Bh5 47.Nc5 Be2 48.Bg4 Bf1 49.Bd1 Ke7 50.Kg4 Kf6 51.Ba4 (better 51.Kh5 Bc4+-) 51...Bb5 (51...Be2 52.Kh3 Bf1 53.Kg3 Bb5+-) 52.Bb5 cb5 53.Na6 1-0. p4el (2085) - dimanych (2025), Rated Blitz tournament, lichess.org, 2015.

5.e3 Bg4 6.h3 Bf3 7.Qf3=+.

4.a3 ab4 5.cb4= d6 6.d4 Nd7 7.de5 Ne5 8.e3 Qe7 (8...Nf6 9.Nd2=) 9.Be2 (9.Nf3 Nf6=) 9...Bf5 10.Nf3 Bg6 11.0-0 0-0-0 (better 11...Nf3!? 12.Bf3 d5=) 12.Qa4 White prepares b5 12...Kb8 (12...Kd7 13.Ne5 de5 14.Rd1 Ke8 15.Rd8 Kd8 16.Qa8 Kc7 17.b5+-) 13.Nc3 White plans b5 13...Nf6 (13...Nf3 14.Bf3 Qh4 15.Qa5+-) 14.b5+- cb5 (14...c5+-) 15.Nb5 Kc8?? (15...Nc6+-) 16.Rac1 Kd7 17.Ne5 (17.Rc7 Ke6 18.Nfd4 Kd5 19.Nc3) 17...de5 18.Rc7 (18.Nd4 Kd6 19.Qb4 Kd5 20.Qc4 Kd6 21.Qc5 Kd7 22.Bb5) 18...Ke6+- 19.Bc4 Kf5 20.Re7 Be7 21.Be5! Ke5 22.f4 Kf5 23.Nd4 Kg4 (23...Rd4 24.Qb5 Rd5 25.Bd5 Bc5 26.Qb1 Ne4 27.Qe4 Kg4 28.Qf3 Kf5 29.Qh3 Kf6 30.Qh4 Kf5 31.g4) 24.Be2 (24.Qd1 Kh4 25.Qf3 Rd4 26.Qh3) 24...Kh4 25.Rf3 Kg4 (25...Bf5 26.Rh3! Bh3 27.g3) 26.Rh3 1-0. rcm06 (2190) - psilure78, gameknot.com, 2021.

4.ba5 Qa5 5.e4 (5.c4 Bc5 6.Bc3 Bb4=) 5...d5 6.d3 (6.ed5 cd5 7.Nf3 Nc6=+) 6...Nf6-/+ 7.ed5 cd5 8.Nf3 Nc6 Black gets the initiative 9.Be2 e4 10.de4 (10.Nfd2 Bf5=+) 10...de4-/+ 11.Nfd2 Bc5 (11...Qg5 12.g3-/+) 12.Nb3 Qb6 13.Nc5 Qb2 14.Nb3 (14.Nd2 Qc3 15.Rc1 Qa5-/+) 14...Ra2 15.Ra2 Qa2 16.0-0 0-0 17.N1d2 Be6 18.Bc4 Bc4 19.Nc4 Rd8 20.Qb1 Qa6 21.Ne3 Qd3 22.Nc5 Qc3 23.Rc1 Qb4 24.Qb4 Nb4 25.Nb7 Re8 26.g3 g6 27.Nd6 Rd8 28.Ne4 Ne4 29.Rc4 Nf2 30.Rb4 Rd2 31.Ng4 Nh3 32.Kf1 Kg7 33.Ke1 Ra2 34.Rb7 h5 35.Ne5 Rf2 36.Rd7 Rf6 37.Rd2?? Re6-+ 38.Re2 Ng1 39.Re3 Re5 (40.Kd2 Kf6-+) 0–1. zuzi – flea, Live Game Caissa's Web, 2004.

4.ba5 d5 5.c4 dc4 6.Be5 Nf6 7.Nf3 Be6 8.Nc3 Nbd7 9.Bf6 Qf6 10.Ne4 Qg6 11.Neg5 Ra5 12.Ne6 fe6 13.Qc1 b5 14.g3 Bc5 15.Bg2 0-0 16.0-0 Qe4 17.Qe1 Ra3 18.Nh4 Qc2 (better is 18...Qe5!?-/+) 19.Bc6= Ne5 20.Bb5 Rb8 21.Rb1 Rb6 22.Rc1 Qa2 23.Be8 Rb2 24.Nf3?? (better is 24.Rb1-/+) 24...Rf3!-+ 25.Ra1 (25.ef3 Nf3) 25...Qb3 26.Qc1 Rg3! 27.Kh1 (27.hg3 Qg3) 27...Qb7 28.f3 Rh3 29.Kg2 Rh4 30.Ra5 Bd4 31.Qe1 Rh6 32.h4 c3 33.dc3 Nd3 34.Qd1 Nf4 35.Kg3 Ne2 36.Kg4 Qc7 37.f4 Qa5 38.Qd3 0–1. Dingbat – VLAD1, ICS, 1999.

4.b5 d5 5.e3 Nf6 6.c4 d4 7.Nf3 de3 8.de3 (8.Be5 ef2 9.Kf2 Ng4 10.Kg3 Bd6-+ (worse 10...Ne5 11.Qe2 Be6 12.Ne5 Qg5 13.Ng4-+); worse 8.Ne5 ef2 9.Kf2 Bd6-/+; worse 8.fe3 e4 9.Ne5 Bd6=+) 8...Qd1 9.Kd1 Ne4 10.Ke1 f6 11.Bd3 Nc5 12.Bc2 Be6 Black intends a4 13.Nbd2 a4 14.Ba3 Nd3 15.Bd3 Ba3 16.Be4 (16.Rb1 Ra7=) 16...Bb2 17.Rb1 a3 18.Ke2 0-0 19.h3 cb5 20.Bb7 Ra7 21.Bd5 Bd5 22.cd5 Na6 23.Ne1 Nb4 24.Nd3 Nd5 25.Nb2 Nc3 26.Kf3 Nb1 27.Rb1 ab2 28.Rb2 Rb8 29.Ne4 Kf7 30.g4 g6 31.Kg3 Ke7 32.f4 f5 33.Ng5 Kf6 34.Rc2 ef4 35.ef4 b4 36.Rb2 Ra3 37.Kg2 Rb7 38.Nf3 fg4 39.hg4 h5 40.gh5 gh5 41.Nd4 Re3 42.Rc2 Rc3 43.Rb2 Rc4 44.Ne2 Rd7 45.Ng3 h4 (45...h4 46.Ne2 Rdc7-+) 0-1. marekt (2200) - deepthough (2140), gameknot.com, 2015.

4.Qc2 d5 5.e3 Nf6 6.Nf3 Bd6 7.a3 Bg4 8.Be2 0-0 (8...e4 9.Nd4 Be2 10.Ke2-+) 9.h4? (9.d3 e4 10.de4 de4=+) 9...Nbd7 (9...e4!? 10.Nd4-+) 10.d3-/+ e4 (10...Qe7 11.Nbd2-/+) 11.de4 de4 (11...Ne4 12.Nbd2 Ndf6 13.Bd3-/+) 12.Nd4 (12.Ng5!? Be2 13.Ke2=+) 12...Be2-+ 13.Ne2 (13.Ke2!? Qc8 14.f4-+) 13...Ne5 14.Nf4 Nc4 (14...Nd5 15.Nd2 Nf4 16.ef4 Nd3 17.Kf1-+) 15.Ne2 (15.Nd2 Nb2 16.Qb2 Bf4 17.ef4 Qd6-+) 15...h5 (better 15...Ng4 16.Qe4 Nge5-+) 16.Nd2-/+ Nb2 (16...Nd2 17.Qd2 Ng4 18.Nd4-+) 17.Qb2 b5 18.Rd1 Qc7 19.Nd4 Be5 20.N2b3 ab4 21.ab4 g6 22.Nc5 Ra7 (22...Bd6 23.Ncb3-/+) 23.Qc2 Rfa8 (23...Re8 24.Kf1=+ (24.Ne4?? Bd4 25.Rd4 Re4-+)) 24.Ne4 Bd4 (24...Ng4 25.Rb1=+) 25.cd4= (25.ed4? Qe7 26.f3 Ra2-+; 25.Rd4?? Ne4 26.0-0 Nf6-+) 25...Ne4 (25...Nd5!? 26.Qc5 Qe7 27.Qe7 Re7=) 26.Qe4+= Qd6 27.0-0 f5 28.Qc2 Ra2 29.Qb3 Kg7 30.Qc3 (30.Rc1 R8a3 31.Qb1 Rd2+-) 30...Qd5 (30...R8a3!? 31.Qe1 Rc2=) 31.Rc1+- R8a6 32.Rc2 Rc2 33.Qc2 Ra4 34.Rb1 Kf7 35.Qb3 (35.g3 Qc4 36.Rc1 Qc2 37.Rc2 Rb4 38.Rc6 Rb2+-) 35...Qb3+= 36.Rb3 Ke6 37.f3 (37.Rb1 Kd5+=) 37...Kd5= 38.Kf2 Kc4 Exerts pressure on the isolated pawn 39.Rb2 (39.Rb1 Rb4 40.Rc1 Kd3 41.Rc6 Rb2 42.Kg1 Ke3=) 39...Rb4 (39...Kc3!? 40.Rb1 Kc2=+) 40.Rc2= Kd5 41.Rc5 Kd6 42.Rc2 (42.g4 fg4 43.fg4 Rb2 44.Kg3 hg4=) 42...Rb1 43.e4 b4 (43...fe4 44.fe4 Rh1 45.e5 Kd5 46.e6=) 44.Ke3 (44.e5 Kd5=) 44...b3 (44...fe4 45.fe4 b3 46.e5 Ke7 47.Re2= (47.Rc6?? Re1 48.Kf4 b2 49.Rc7 Ke6-+)) 45.e5 Ke7 46.Rc6?? (better 46.Re2=) 46...b2-+ 47.Kd2 (47.Rc7 Ke6 48.Rc6 Kd7 49.Rb6 Re1 50.Kf4-+) 47...Rg1 48.d5 (48.Rb6 b1Q 49.Rb1 Rb1 50.Ke3-+) 48...b1Q 49.Rc7 (49.Re6 Kf7 50.Rf6 Kg7 51.Rf7 Kf7 52.e6 Ke7 53.d6 Kd6 54.Ke3 Rg2 55.e7 Qb6 56.Kd3 Qb3 57.Kd4 Rd2) 49...Kd8 50.d6 (50.Rd7 Kd7 51.e6 Kd6 52.Ke3 Rg2 53.e7 Qb6 54.Kd3 Qb3 55.Kd4 Rd2) 50...Qb2 (50...Rg2 51.Ke3 Qb3 52.Kd4 Rd2 53.Kc5 Rd5 54.Kc6 Qb5) 51.Ke3 Qe5 52.Kf2 (52.Kd3 Qd6 53.Kc2 Rg2 54.Kc3 Kc7 55.Kc4 Rc2 56.Kb3 Qd3 57.Kb4 Kb6 58.f4 Rc4) 52…Qe1 0–1. combijack (1845) – palhares (1945), gameknot.com, 2018.

4.c4 d6 +=.

4.e3 Nf6 5.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4).

4.e4 Nf6 5.Bd3 (5.a3 d5 6.ed5 cd5=+) 5...Qb6 (5...d5!? 6.Qc2 Bd6-/+) 6.Nf3=+ ab4 7.Ne5 d5 8.c4 (better is 8.ed5!? bc3 9.Bc3 Nd5 10.0-0=) 8...de4-/+ 9.Be4 (9.Be2 Be7-/+) 9...Ne4-+ 10.g4?? (better is 10.Qe2 Qf2 11.Qf2 Nf2 12.Kf2-/+) 10…Qf2# 0–1. piotrek3054 – thotares (1615), internet, 2007.

5.d3 Nf6 6.Nf3 Bd6 7.Nbd2 0-0 (7...Be6 8.e3=+) 8.e4 (8.c4 ab4 9.ab4 Ra1 10.Qa1 dc4 11.dc4 Bb4 12.Be5 Ne4-/+) 8...ab4 (8...Nbd7 9.Be2=+) 9.ab4 Ra1 10.Qa1 Re8 11.Be2 Be6 (11...Nh5 12.0-0=+) 12.0-0 (12.Ng5 Bg4=+) 12...de4 (12...Nh5 13.Qa7 b6 14.g3=+) 13.Ne4 (13.de4 Nbd7=) 13...Ne4 (13...Na6 14.Nd6 Qd6 15.d4 ed4 16.Nd4=) 14.de4 b6 (14...Nd7 15.Qa7 b6 16.Rd1=) 15.b5 (15.Bc1 Qf6=) 15...c5 (15...Qc7!?=) 16.c4 Nd7 (16...f6 17.Qc1=) 17.Rd1 (< 17.Ne5 Be5 18.Be5 Ne5 19.Qe5 Bc4-/+) 17...Qe7 (17...Qc7 18.Ng5+=) 18.Ne5+/– Ne5 (18...Be5 19.Be5 Bg4 20.Bg4 Ne5 21.Be2+=) 19.Be5 Be5 20.Qe5 f6 21.Qd6 Qb7 22.f3 (22.Qc6 Qc6 23.bc6 Kf7+/–) 22...Bf7 (22...Qa7 23.Qc6 Bf7 24.Kf1+/–) 23.Ra1+- Re6 (23...Qb8 24.Qb8 Rb8 25.Kf2+-) 24.Qd8 (24.Qd5 Qe7+-) 24...Be8 (24...Re8!? 25.Qd3 Qe7+/–) 25.Ra8 Kf7 (25...Qe7 26.Qe7 Re7 27.Kf2+-) 26.Rb8 (better is 26.Rc8!? Re7 27.Rb8+-) 26...Qd7+/– 27.Qd7 ½–½. alaamattar (2135) – sturmhut (2135), net–chess.com, 2005.

5.d4 ed4 6.Qd4 Nf6 =+.

5.e3 b5 6.c4 (better is 6.a4!? ab4 7.cb4 ba4 8.Be5=) 6...dc4-/+ (6...ab4?! 7.cb5 f6 8.Nf3+=) 7.Be5 ab4 8.d3 (8.ab4 Ra1 9.Ba1 Na6-/+) 8...Nd7 (8...ba3 9.dc4 Qd1 10.Kd1-+) 9.ab4 (better is 9.Bd4 ba3 10.dc4-+) 9...Ne5 10.Ra8 Bb4 11.Nd2 c3 12.Qa1 (12.Be2 cd2 13.Kf1 Qd7-+) 12...cd2 13.Kd1 Ng4 14.Nh3 (14.Ke2 c5 15.Nf3 Ne7-+) 14...N8f6 15.Qb2 (15.Be2 0-0 16.Kc2-+) 15...Nd5 16.Ke2 Nde3! 17.fe3 (17.Ra1 Qe7 18.Qb4 Qb4 19.fe3-+) 17...Qd3! 18.Kd3 d1Q (18...d1Q 19.Ke4 Qd5 20.Kf4 Bd6 21.Qe5 Qe5 22.Kf3 Qe3#) 0–1. Oertenberg,Goeran – Andersson,Lars H, corr SSKK 2–99, 1987.

5.e3 Bd6 +=.

5.e3 Nf6 6.Nf3 e4 7.Ne5 -/+.

5.Nf3 Nd7 =+.

6.c4 ab4 7.cd5 Nf6 =+.

6.Ne2 Be6 7.ba5=+ Nd7 (7...Qc7 8.Ba3 Ba3 9.Na3 Qa5 10.Nc2=+) 8.Qb7= Ne7 9.Qb3 Nc5 10.Qb6?? (better is 10.Qc2=) 10...Nd3-+ 11.Kd1 Bc7 12.Qb3 Rb8 13.Qa3 Bd6 14.Qa4 (14.Kc2 Ba3 15.Ba3 Nf2 16.Rg1 Qa5 17.Nc1 Bf5 18.d3 Rb1 19.Rb1 Qa3 20.Be2-+) 14...Nb2 (15.Ke1 Na4-+) 0–1. Gnirk,Hajo – Tuchtenhagen,Harald, corr SOK–88–19, 1988.

6.Ne2 Nf6-/+ 7.ba5 Ra5 8.Ba3 c5 -/+.

6.Ne2 Nf6 7.ba5 Ra5 8.c4 -/+.

6.Ne2 Nf6-/+ 7.d4 0-0 8.Nd2 (8.de5 Be5 9.Nd4 a4-/+) 8...a4 (8...Nbd7 9.ba5 Qa5 10.c4-/+) 9.Qc2 (9.Qa3 Nbd7-/+) 9...a3 (9...Nbd7 10.a3-/+) 10.Bc1 e4 11.Qb3=+ Be6 12.Ba3 Nbd7 13.g3 Nb6 14.Bg2 Nc4 15.Nc4 dc4 16.Qb2 Ra7 17.Qc1 Qa8 18.Bb2 Ra2 19.Ra2 Qa2 20.0-0 Ra8 21.Rd1 Bg4 22.Rd2 Qa6 23.Qc2 Qb5 24.Be4= Qh5 25.Bg2 Bf3 26.Nf4 Bf4 27.ef4 Re8 28.Qd1?? Bd1-+ (29.f3 Bf3-+) 0–1. Weir,Robert – Bateman,Greg, CompuServe, 1994.

6.Ne2 Nf6-/+ 7.d4 Nbd7 8.a3 -/+.

5.Be5 d5 6.cd5 Qd5 7.Nf3 Nd7 =+.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.Qc2 dc4-/+ 9.Bc4 Nc4 10.Qc4 Be6 11.Qe4 Nf6 12.Qc2 (12.Qf4 Be7-/+) 12...Qd5 (12...Ra2 13.Nf3-+) 13.f3 (13.Nf3 Ra2 14.Ra2 Qa2-/+) 13...Bf5 (13...Ra2!? 14.Ra2 Qa2-/+) 14.Qd1-/+ Bd3 15.a3 (15.Nh3 Be7-/+) 15...Qc4 (15...Qg5 16.g3-/+) 16.ab4 Ra1 17.Ba1 Nd5 18.Ne2 (18.Nc3 Nb4 19.Kf2 Bc2-+) 18...Nb4 (better is 18...Be2!? 19.Qe2 Qa2-+) 19.Kf2-/+ Bc2 (19...Bd6 20.Nd4-/+) 20.Qf1 Nd3 21.Kg3 Bd6-+ 22.f4 Rg8 23.h4 g5 24.hg5 Rg5 25.Kh2 Rh5 26.Kg3 Rh1 27.Qh1-/+ Nc5 28.Nec3 Nb3 29.Bb2-/+ Qd3 30.Qh3 Kd8 31.Qh6 Be7 32.Qh1 b5 33.Na3 b4 (34.Nc2 bc3 35.Bc3 Qc2-+; 33...Qd2?! 34.Nc2 Qc2 35.Qd1 Qd1 36.Nd1-+) 0–1. Diener,Rudolf – Schuehler,Ernst, corr, 1982.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5 Na4 9.Qb3 (9.Be5!?=) 9...Nb2=+ 10.Qb2 Qd5 11.d4 Nf6 12.Nf3 Bd6 13.Bd3 (13.Nbd2 0-0=+) 13...0-0 (13...Be6 14.0-0=+) 14.Nbd2=+ b5 15.Qc2 Re8 16.Rc1 The backward pawn on c6 becomes a target 16...Bb7 17.Ra1 Ra3 18.Qb1 (18.Nb3 Bc8=+) 18...Rea8 Now all is on a2 19.Nb3?? (19.Ne4!? Ne4 20.Be4=+) 19...Qb3!-/+ 20.Be2?? (20.Qb3 Rb3) 20...Qb1 (20...Qc3 21.Kd1-+) 21.Rb1 Ra2 (22.Bd1 R8a3-+) 0–1. Rosner,Dirk – Hoffmann,K, corr SOK–89–51, 1989.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5 Nd5 9.e4 Qe7 10.Qe2 =+.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5!? Nd5 9.Nf3 =+.

5.Be5 d5 6.e3 Nd7 7.Bd4 Ngf6 =+.

5.Be5 d5 6.e3 Be6 7.cd5 Bd5 8.d4 =+.

5.b5 cb5 6.Bb5 Bd7 7.c4 Bb5 8.cb5 =+.

5.b5 Bf5 6.a4 Nf6 7.c4 Nbd7 8.d4 (8.Nf3!?=+) 8...ed4 9.Bd4 Bb4 10.Nd2 (10.Bc3 0-0-/+) 10...Ne4 11.Ngf3 Bg4 12.Be2?? (better is 12.Ra2 Nd2 13.Rd2-/+) 12...Bf3-+ 13.Bf3 Nd2 (13...Bd2?! 14.Kf1 Bb4 15.cd5 Nd2 16.Kg1 cb5 17.ab5-+) 14.Be2 (14.Bh5 c5 15.Bg7-+) 14...Qh4 15.Qc2 (15.Qd2 Bd2 16.Kd2 0-0 17.bc6 bc6-+) 15...Ne4 16.Kd1 Nf2 17.Kc1 Nh1 18.g3 (18.bc6 bc6 19.cd5 cd5-+) 18...Qh2 19.Bg7 (19.cd5 Ng3 20.Bc4 Qc2 21.Kc2 Rc8 22.bc6 bc6-+) 19...Rg8 20.Bc3 Bc3 21.Qc3 Ng3 22.Bd1 Ne2 23.Be2 Qe2 24.bc6 Rg1 (25.Qe1 Re1#) 0–1. maxii – timekillu, Live Game Caissa's Web, 2004.

5.b5 Bf5 6.Nf3 e4 7.Nd4 Bd7 =.

5.d4 ab4 6.de5 Nd7 7.Nf3 f6 8.e6 Nb6 9.Be2 Na4 10.Qb3 Nb2 11.Qb2 Qa5 12.0-0 Be6 13.Nd4 Bd7 14.cb4 Qb4 15.Qb4 Bb4 16.a3 Ne7 17.Nb3 Bd6 18.Nc3 Ra3 19.Ra3 Ba3 20.Ra1 Bb4 21.Ra8 Bc8 22.Na4 0-0 23.Nb6 Bf5 24.Rf8 Kf8 25.Kf1 Kf7 26.h3 c5 27.g4 Bc2 28.Nc1 Ba5 29.Na8 c4 30.Kg2 Bd2 31.Na2 Bb3 32.Nc7 Ba2 33.Nb5 Ke6 34.Nd4 Kd6 35.Kf3 Bb1 36.Nb5 Kc5 37.Nc7 Be4 38.Kf4 g5 39.Kg3 b5 40.Ne6 Kd6 41.Nf8 c3 42.f3 c2 0–1. aji – ChessManiac, VOGChess.

5.Nd4 ab4 6.cb4 Bb4 7.Nc6 dc6 8.Bg7 +=.

5.Ng1 Nf6 =+.

4.a3 d5 5.Nf3 Nbd7 6.d3 e5 7.Nbd2 e4 8.de4 de4 9.Nd4 e3 10.fe3 Nd5 11.Nc4 N7b6 12.Nb6 Nb6 13.Qd3 Na4 14.Bc1 Be7 15.g3 ab4 16.cb4 (16.ab4!? c5 17.bc5 Nc5 18.Ra8 Nd3 19.ed3=) 16...c5=+ 17.bc5 Nc5 18.Qb5 Bd7 19.Qc4 Ne4 20.Qd5 (20.Bg2 Qa5 21.Kf1 Qe5=+) 20...Qc7 21.Qe4 Qc3 Increasing the pressure on the isolated pawn on a3 22.Kf2 Qa1 23.Qb7 Rd8 24.Bg2 Qc3 25.Bb2 Qc8 26.Qe4 Kf8 27.a4 h5 (27...Ba4? 28.Rc1 Qd7 29.Nf5+-) 28.Nf3 Qc5 29.Ne5 Be8 30.Rc1 Qb6 31.Bd4 Qf6 32.Nf3 Bd7?? (better 32...Qd6+=) 33.Bf6+- Bf6 1-0. marekt (2075) - rcm06 (2145), gameknot.com, 2014.

4.a3 e6 5.e3 d5 6.f4 Be7 7.Nf3 Nbd7 8.Be2 0-0 9.0-0 b5 10.d4 a4 11.Ne5 Ne5 12.fe5 Ne4 13.Nd2 f5 14.ef6 Nf6 15.Bd3 Qc7 16.e4 e5 17.ed5 Nd5 18.Qh5 g6 19.Bg6 Nf6 20.Qh6 hg6 21.Qg6 Kh8 22.c4 Be6 23.Rf3 Bg8 24.de5 Bh7 25.Rh3 Rg8 26.Qh6 Ng4 27.e6 Bf6 28.Bf6 Nf6 29.Qf6 Qg7 30.Qg7 Rg7 31.Rf1 Re8 32.Re1 Rge7 33.Rhe3 Kg7 34.Nf3 Kf6 35.Nd4 Bg8 36.Nc6 Rc7 37.Rf1 Kg7 38.Ne5 1–0. lllllll21 (1650) – salutoromano (1635), kurnik, 2012.

4.Qa4 b5 5.Qb3 Na6 6.e3 ab4 7.Nf3 e6 8.Be2 Nc5 9.Qc2 Ra2 10.Ra2 b3 11.Qb3?? (11.Qd1 ba2 12.Na3-+) 11...Nb3 12.0-0 Nc5 13.d4 Nce4 14.Ra8 Bd6 15.Na3 (15.Ne5 Nd5-+) 15...Ba3 (15...Qc7!? 16.Nc2-+) 16.Ba3 Nc3 17.Bd3 Nfe4 18.Ne5 f6 19.Nf3 (19.Bb4 Qc7 (< 19...fe5 20.Ba5-+) 20.Nf3 d6-+) 19...Qc7 (19...d6 20.Ra1-+) 20.g3 (20.Bb4 Nd5 21.Ba5 Qb7 22.Rc8 Qc8 23.Be4 d6-+) 20...d6 21.Bb4 c5 22.dc5 Nc5 (22...dc5 23.Bc3 Nc3 24.Rc1-+) 23.Bc3 (23.Rc1 Nd3 24.Rc3 Nc5-+ (24...Nb4?? 25.Rc7 0-0 26.Raa7+-)) 23...Nd3 24.Bd4 (24.Rd1 Qc3 25.Rd3 Qc1 26.Kg2 Qc6 27.Rc8 Qc8 28.Rd6 Qb7-+) 24...0-0 (24...Qc6 25.Rfa1 e5 26.Nh4 ed4 27.Nf5-+) 25.Ra7 (25.Ra3 Qc6 26.Nh4 Nc1-+) 25...Bb7 (better is 25...Qc6 26.Rd1 Qf3 27.Rd3-+) 26.Kg2 (26.e4-+) 26...Qc6 27.Rb7 Qb7 28.Rd1 Ne5 29.Be5 fe5 30.Rd6 Qf3 31.Kh3 Rf6 32.Rd8 Kf7 33.Rb8 Rh6 0–1. MasterofDisaster – michelle, Live Game Caissa's Web, 2004.

4.e3 ab4 5.cb4 e6 6.a3 b5 7.Nc3 e5 8.Qf3 d5 9.Qg3 Nbd7 10.d3 d4 11.ed4 ed4 12.Nce2 Nh5 13.Qf3 Ne5 14.Qe4 Qd5 15.Qd5 cd5 16.Nd4 Nf4 17.Kd2 Rb8? (better is 17...Ng4!? 18.Nb5 Rb8+/–) 18.Re1 f6 19.g3 Nfg6 20.f4 Be7 21.fe5 fe5 22.Nc6 Bg5 23.Kd1 Rb6 24.Ne5 0-0 25.Bg2 Rd8 26.Ngf3 Ne5 27.Be5 Rg6 28.Bc7 Rf8 29.Ne5 Ra6 30.h4 Bh6 31.Bd5 Be6 32.Be6 Re6 33.Rhf1 Rc8 34.Nd7 Re1 35.Ke1 Bc1 36.Ba5 g6 37.d4 Rc3 38.Nf6 Kh8 39.Nd5 Ra3 40.Bc7 Kg8 (40...Ra7+-) 41.Ne7 Kg7 42.Be5 Kh6 43.g4 Re3 44.Kd1 Re5 45.de5 (45.Kc1?! Re7 46.g5 Kh5+-) 45...Be3 46.Rf7 g5 47.Nf5 (47...Kg6 48.Rf6#) 1–0. MacChess 4.0 – MacChess 5.0, 2000.

4.e3 e5 5.d4 ed4 6.Qd4 =+.

4.Nf3 ab4 5.cb4 d5 =.

4.Nf3 d6 5.g3 e5 6.Bg2 ab4 7.cb4 e4 8.Nd4 Qb6 9.Qb3 Na6 10.a3 Bd7 11.Qc2 Rc8 (11...d5 12.f3 c5 13.Nb3 cb4 14.Bd4-/+) 12.Nb3= d5 (13.Bf6 gf6=) =. Grund,Karl – Sterle, corr, 1982.

4.Nf3 e6 5.e3 d5 6.Bd3 Bd6 7.0-0 e5 8.Bc2 e4 9.Nd4 Bh2! 10.Kh2 Ng4 11.Kg3 Qg5 (better is 11...h5 12.Qe2 h4 13.Kh3 Qd6 14.Qg4 Bg4 15.Kg4 h3 16.Be4 de4-+) 12.Qe2?? (12.f4 Qg6 13.Qe2 Ne3 14.Kh2 Nf1 15.Qf1-/+) 12…Ne3 (12...Ne3 13.Qg4 Qg4 14.Kh2 Qg2) 0–1. Jokmin,Alex – Pietrzak,Wojciech, SF–2009–0-00040, 2009.

5.a3 e5 6.c4 =+.

5.b5 e5 6.c4 Bd6 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3 0-0 10.Qc2 cb5 11.Bb5 Nc6 12.Bc6 bc6 13.Nf3 Re8 14.d3 Ba6 15.Rd1 Qd7 16.0-0 e4 17.de4 Bf1 18.Rf1 Qe6 19.e5 Bb4 20.Bb2 Qa2 21.Ng5 g6 Black plans a4 22.Ra1 Qd5 23.Ne4 Be7 24.f4 a4! 25.Ra4 Ra4 26.Qa4 Rb8 27.Bc3 Rb1 28.Kf2 Qd3 29.Qd4 Bh4 30.Kf3 Qf1 31.Kg4 Qg2 32.Kh4 Qh2 33.Kg5 Qh5 34.Kf6 Qf5 35.Ke7 Rb7 (35...Rb7 36.Kd8 Rb8 37.Kc7 Qc8 38.Kd6 Qd8 39.Kc5 Qb6 40.Kd6 c5 41.Kd5 Qe6 42.Kc5 Qb6 43.Kd5 Qb7 44.Kd6 Rd8 45.Kc5 Rc8 46.Kd6 Qc6 47.Ke7 Qe6#) 0–1. usingprogram (2020) – mindja (1790), kurnik, 2012.

5.Nf3 ab4 6.cb4 e5 7.Ne5 Bb4 =.

5.Nf3 Nbd7 =+.

6.c4 dc4 7.Bc4 ab4 8.ab4 Ra1 9.Ba1 -/+.

6.c4 dc4 7.Bc4 b5 8.Be2 -/+.

6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Ne4 =.

6.Nf3 e6 =+.

7.b5 cb5 8.cb5 Bd6 9.Nc3 =+.

7.b5 Bd6 8.cd5 cd5 9.Nf3 0-0 =+.

7.b5 Bd6 8.Nf3 0-0 9.Nc3 dc4 10.Bc4 b6 11.d3 =.

7.b5 Bd6 8.Nf3 0-0 9.Nc3 Nbd7 10.bc6 (10.Nd4 Bg4 11.f3 c5=+) 10...bc6= 11.Nd4 Qc7 (11...Ne5 12.Nf5 ef5 13.c5=) 12.cd5 Nd5 13.Nf5 ef5 14.Qh5 Qb6 15.Na4+= Qb3 16.Qf5 N7f6 17.Bf6 Nf6 18.Nc3 Ba3 19.Bd3 Rfe8 20.Bc2 White is in command 20...Qb4 21.0-0 Ra7 22.Rfb1+= Qc5 23.Rb3 Qf5 24.Bf5 Bd6 25.Rb6 Bf8 26.Rc6 Re5 27.Bc2 Rc5 28.Rc5 Bc5 29.Nb5 Ra8 30.d4 Bb4 31.f3 Nd5 32.Kf2 h5 33.Be4 Rd8 34.h3 Kf8 35.Bd3 Ke7 36.e4 Nf4 37.Bc4 Rc8 38.Bb3 Kf6 39.e5 Ke7 40.Nd6 Bd6 41.ed6 Kd6 42.Ra5 f6 43.Ra7 Rc3 44.Rb7 Rd3 45.h4 Rd4 46.Ke3 Ke5 47.Re7 Kd6 48.Rg7 Rb4 49.Bf7 Ke5 50.g3 Ng2 51.Kf2 Rb2 52.Kg1 Ne3 53.f4 Kf5 54.Bh5+- Rg2 55.Kh1 Rd2 56.Bg6 Kg4+= 57.Be4 Kh3 58.Kg1 f5 59.Bc6 Ng4 60.Rd7 Rc2 61.Ba4 Rg2 62.Kf1 Ne3 63.Ke1 Rg3 64.h5+/– Ng2 65.Kd2 Nf4 66.h6 Rg6 67.h7 Rh6 68.Bc2+- Kg4 69.Rg7 Kf3 70.Bf5 Rh2 71.Kd1 Nd5+/– 72.Kc1 Ne3? 73.Bd3 Rh1 74.Kd2 Rd1 75.Kc3 Rh1 76.Rf7 Kg3 77.Kd4 Nd1 78.Rf3! Kg2 79.Be4 Rh7 80.Rf7 Kg3 81.Rh7 Nf2 82.Rg7 Kf4 83.Rf7 Kg3 84.Rf3 Kg2 85.Rc3 Kf1 86.Rc1 Ke2 87.Bd3 Kd2 88.Rc2 Ke1 89.Re2 Kf1 90.Re8 Kg2 91.Rg8 Kh3 92.Rf8 Kg3 93.Be2 Nh3 94.Rg8 Kf2 95.Bd3 Nf4 96.Bc4 Kf3 97.Rg7 Kf2 98.Ke4 Nh5 99.Rf7 Ke1 100.Kf3 Kd2 101.Kg4 Kc3 102.Be6 Kd4 103.Kh5 Ke5 104.Bf5 Kd4 105.Rd7 Kc5 106.Be6 Kb4 107.Rc7 Kb5 108.Bd7 Kb4 109.Kg4 Kb3 110.Kf3 Kb4 111.Ke4 Kb3 112.Kd4 Kb4 113.Rc4 Kb3 114.Ba4 Kb2 115.Rc2 Kb1 116.Kd3 Ka1 117.Bb3 Kb1 118.Kc3 Ka1 119.Rc1# 1–0. NN – GrandMasterChess 80286, 1992.

7.b5 Bd6 8.Nf3 0-0 9.Nc3 Nbd7 10.bc6 (10.Nd4 Bg4 11.f3 c5=+) 10...bc6= 11.Nd4 Qc7 (better is 11...Ne5 12.Nf5 ef5 13.cd5 cd5=) 12.g3 (better is 12.cd5!? Nd5 13.Nd5 cd5 14.Nf5 ef5 15.Rc1+=) 12...Bg4 (12...Rfb8 13.Ra2 Be4 14.Ne4 de4 15.f3-/+) 13.Be2 Rfb8 (13...Be2 14.Qe2 dc4 15.Qc4-+) 14.Rb1 Bh3 15.Nf3 Bf5-/+ 16.d3 h6 17.Nd4=+ dc4 18.Nf5= ef5 19.dc4 Nc5 20.Qc2 Qd7 21.0-0+= Rb3 22.Rfd1 Qe6 23.Rd2 Re8 24.Qd1 Bc7 25.Qf1 Be5 26.Rc2 Rd8 27.a4 Qe8 28.Qe1 Ng4 29.h3= Nf6 30.Bf1 Bc7 31.Rd2= Rd2 32.Qd2 Nfe4 33.Ne4 Qe4 34.Qd1 f6 35.Bg2 Qc4 36.Bc6+= Rd3 Attacking the isolated pawn on a4 37.Qe2 Qe6 38.Bb5 Rd5 39.Bc4+/– Na4 40.Bd4 Kh7?? 41.Qa2 Nc3 42.Bc3 Qc6 43.Bd5 Qc3 44.Rb7 Bd6 45.Be6 Qe1 46.Kh2 a4 47.Qc2 Qa1 48.Bf5 Kg8 49.Qc4 Kh8 50.Rb8! Bb8 51.Qc8# 1–0. NN – GrandMasterChess 80286, 1992.

7.c5 ab4 8.ab4 Ra1 9.Ba1 b6 10.Bf6 Qf6 =+.

5.d4 ab4 6.cb4 Bf5 7.a3 =+.

5.d4 Bg4 6.e3 (6.ba5 Qa5 7.Ne5 Bf5=+) 6...ab4 7.cb4 e5 8.Bc3 (8.Qb3!? e4 9.Ne5=+) 8...e4 9.h3 Bh5 10.g4 Ng4! 11.hg4 Bg4 12.Be2 ef3 13.Bf3 Bf5 (13...Be6 14.Nd2-/+) 14.Nd2 (14.b5 Ra7-/+) 14...Nd7 (14...Na6 15.Qb3-/+) 15.Qb3 (15.b5 Qg5-/+) 15...Nf6 (better is 15...g5-/+) 16.0-0-0? (better is 16.a4!?-/+) 16...Be7 (16...h5 17.Kb2-+) 17.Rde1 (17.Rdg1 g6-+) 17...Ne4 (better is 17...h5-+) 18.b5?? (18.Be4 de4 19.Reg1-+) 18...Ra3 19.Qc2 (19.Qb1 Rc3 20.Kb2 Ng3-+) 0–1. Knight – berzelius, mySchach.de, 2003.

5.e3 Bg4 6.b5 e5 7.c4 e4 8.h3 Bh5 (8...ef3?! 9.hg4 fg2 10.Bg2 dc4 11.Qa4 cb5 12.Qb5 Nbd7 A) worse is 13.Qb7 Rb8 14.Bf6 Qf6 (14...gf6? 15.Qe4 Be7 16.Na3+-) 15.Qe4 Kd8=; B) 13.Bb7?! Rb8 14.Qc6 Ng4=; C) 13.g5+=) 9.g4 Ng4 (9...ef3 10.gh5 dc4 11.Qf3+=) 10.hg4 Bg4 11.Be2 ef3 12.Bf3 Bf3 13.Qf3 dc4 14.Rh5 f6 15.Qe4 Be7 16.a4 (16.Qc4!? cb5 17.Qe4+=) 16...Qd3-/+ 17.Qe6 Qg6 18.Rh4 Nd7 19.bc6 Nc5 20.cb7 Rb8 (20...Ne6?? 21.ba8Q (21.ba8R?! Bd8=) 21...Bd8 22.Qd5+-) 21.Qc6 Kf7 22.Qd5 Ke8 23.Rc4 Qg5 (23...Nb7 24.Ba3 Ba3 25.Na3+-) 24.Qc6 Kf7 25.Ba3 Nd3 26.Ke2 Rhd8 (26...Ba3!? 27.Na3 Rhd8 28.Qc7 Kg6+/–) 27.Qc7+- Qh5 28.f3 Nb4 29.Bb4 ab4 30.Rb4 Qe5 (30...Kf8 31.Rg4 g6+-) 31.Qe5 fe5 32.Rb5 Rd7 33.a5 (33.Nc3 Rbb7 34.Re5 Bf6+-) 33...Rdb7 34.Rb7 Rb7 35.a6 Ra7 36.Nc3 Bd8 37.Kd3 Ke6 38.Nb5 Ra8 39.a7 Kf5 (39...Kd7 40.Rc1+-) 40.Ra6 1–0. marekt – Odensboldklub, chessworld.net, 2015.

4.Bb4 d6 5.d4 =.

4.Bb4 Nf6 5.Bc3 e6 6.d3 d5 7.e3 Bd6 8.h3 e5 9.Nd2 0-0 10.Be2 Bf5 11.Bg4 Qd7 12.Bf5 Qf5 13.Qf3 Qe6 14.a4 Nbd7 15.Ne2? (15.e4 d4 16.Bb2 Nc5-+) 15...Rfb8 (15...e4 16.de4 de4 17.Ne4 Ne4 18.Qg4 Nc3 19.Nc3-+) 16.0-0?? (16.Qg3 d4! 17.Bb2 Re8-/+) 16...b5?? (better is 16...e4 17.de4 de4 (17...Ne4?! 18.Ne4 de4 19.Qh5+=) 18.Ne4 Ne4-+) 17.ab5-/+ Ra1 18.Ra1 Rb5 19.Ra6? Rb6 20.Ra8+= Rb8 21.Rb8 Bb8 22.Ng3 g6 23.Qe2 Bd6 24.Ba5 c5 25.c4 d4 26.ed4 cd4 27.Nde4 Ne4 28.Ne4 f5 29.Ng5 Qe7 30.Bd2 Nc5 31.Nf3 Kg7 32.Bb4 Kf6 33.Bc5 Bc5 34.Nh2 e4-/+ 35.g4 ed3 36.Qd3 Qe4 37.Qf3 Qf3 38.Nf3 fg4 39.hg4 d3 40.Kf1 Bb4 41.Nd4 h5 42.gh5 gh5 43.Nb3 h4 44.c5 h3 45.Kg1 d2?? 46.Nd2= Bd2 47.Kh2 ½–½. Pilecki,Jozef – Krawczyk,Zbigniew (1755), Rowy/Fregata Poland, 2009.

5.a3 c5 6.Bc3 d5 7.d4 Nc6 8.dc5 Qc5 9.e3 e5 10.Nf3 Bd6 11.Be2 Nf6 12.Nfd2 0-0 13.Nb3 Qb6 14.0-0 Be6 15.Bb2 Rad8 16.N1d2 Qc7 17.Re1 e4 18.Nf1 Nd7 19.Nd4 Nd4 20.Bd4 Ra8 21.a4 Rfc8 22.c3 Ne5 23.Qb3 Nc4 24.Bc4 dc4 25.Qc2 f5 26.g3 Qf7 27.Qe2 g5 28.Nd2 Rc6 29.f4 g4 30.Ra2 Rca6 31.Rea1 b5 32.Ne4 fe4 33.ab5 Ra2 34.Ra2 Ra2 35.Qa2 Qb7 36.Qa5 Be7 37.b6 Bd5 38.Qb5 Kf7 39.Kg2 Qc6 40.Qa5 Qa8 41.Qb5 Ke6 42.Kg1 Qb7 43.Qe8 Qa8 44.f5 Kd6 45.Be5 Ke5 46.Qe7 Kf5 47.Qh7 Ke5 48.Qg7 ½–½. Scheidacker,Mirko – Jaeger,Andre, Berlin, 1997.

5.Bc3 d6 =.

5.Bc3 Nf6 =.

4.a3 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4).

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

4.c5 Qb4 5.Ba3 Qg4 =+.

5.e4 =+.

5.Nf3 =+.

5.Bc3 Qb6 6.Nd2 =+.

5.Bc3 Qb6 6.e4 =+.

5.Bc3 Qc5 6.e4 d5 7.cd5 cd5 8.Nf3 Nc6 =+.

5.Bc3 Qc5 6.e4 d5 7.Nf3 de4 8.de4 a4 9.Be2 =.

5.Bc3 Qc5 6.e4 d5 7.Nf3 Nf6 8.e5= Nfd7 9.Nbd2 b5 10.d4 Qb6 11.c5 Qd8 12.Bd3 g6 13.a4 b4=+ 14.Bb2 Bg7 15.Nb3 Ba6 16.0-0 Bd3 17.Qd3 0-0 18.Rae1 Na6 19.Ng5 e6 20.f4 Qc7 21.Kh1 Rfb8 22.Rf3 h6-/+ 23.Nh3 Ra7 24.Ref1 Kh8 25.g4 White intends f5 25...Raa8 26.Ng1 Rb7 27.Ne2 Nf8 28.Ng3 White prepares the advance f5 Raa7 29.f5= gf5 30.gf5 Nh7 31.fe6 fe6 32.Qg6 Qc8 33.Nh5 Ng5 34.Rf6 Bf6=+ 35.Qh6 Nh7 36.Nf6 Rf7=+ 37.Rf3 Rg7?? 38.Rh3 Qd8 39.Bc1 Raf7=+ 40.Bf4 Re7 41.Bg3 Qc7?? 42.Qf4?? Rg6=+ 43.Rh5 Rf7 44.Bh4 Rgf6?? 45.Bf6+- Kg8 46.Rh3 Nf6 47.Qg5 Rg7 48.Qf6 Qd7 49.Nd2?? Nc7+/– 50.Nf3 Ne8 51.Qh6+= Kf7 52.Ng5 Ke7 53.Rf3 Qc8 54.h4 Kd7? 55.Qe6 Kc7 56.Rf8 Rg5 57.Rf7 Kb8 58.Qc8 Kc8 59.hg5 b3 60.g6 b2 61.Rf1 Ng7 62.Rb1 Nf5 63.Rb2 Ng3 64.Kg2 Nf5 65.Rf2 Nh4 66.Kg3 Ng6 67.Rf6 Kd7 68.Rg6 Kc7 69.Rd6 Kc8 70.e6 Kc7 71.e7 Kb7 72.e8Q Ka7 73.Qc6 Kb8 74.Rd8 Ka7 75.Ra8# 1–0. NN – KnightStalker 80286 12Mh, 1993.

5.Bc3 Qc5 6.e4 d5 7.Nf3 Nf6 8.e5 Nfd7 9.Nbd2 b5 10.e6 fe6 11.Nb3 Qb6=+ 12.cb5 cb5 13.Be2 Nc6-/+ 14.Nbd4 Nd4 15.Bd4 Qd6 16.Bc3 e5 17.0-0 Bb7 18.Rc1 e6 19.d4 e4 20.Ne5 Ne5 21.de5 Qd7 22.Bh5 g6 23.Bg4 Bh6-+ 24.Rc2 e3 25.Qd4 ef2 26.Qf2 Rf8 27.Bf3 Rf5 28.Qb6 Ra6 29.Qd4 Bg7 30.Qe3 Ra8 31.Bb2 Rf7 32.Kh1 Rc8 33.Rcf2 Rc6 34.Qd2 a4 35.Qe1 Rc7 36.Qd2 Rf5 37.Qe1 Qe7 38.Qe3 b4 39.Bd4 Ba6 40.Rd1 Bc4 41.Rb1 Rc8 42.Rc1 Qh4 43.Rd1 Rc7 44.Qe1 Qe7 45.Rb2 Rb7 46.Rf2 Rb8 47.Rc1 Rd8 48.Rb2 Bh6 49.Rd1 Bf8 50.Rf2 Bg7 51.Rb2 Rb8 52.Rf2 Rf7 53.Qe3 Rc8 54.Rc1 Rc7 55.Bb6 Rc6 56.Bd4 Rc8 57.Bb6 h6 58.Qd4 Rc6 59.Ba5 Ra6?? 60.Bb6?? Be5 61.Qe5 Rb6 62.Qd4 Rc6 63.Qh8 Qf8 64.Qe5 Qc5 65.Rd2 Qd6?? 66.Qd6-/+ Rd6 67.Rc4 dc4 Exploits the pin 68.Rd6-/+ a3 69.Re6=+ Re7 70.Bc6 Kf7 71.Re4 Re4-/+ 72.Be4 Kf6 73.Bd5=+ c3 74.Bb3 Ke5 75.Kg1 Kd4 76.Bc2 Ke3 77.Kf1 Kd2 78.Bb3 c2 79.Bc2 Kc2 80.g4 b3 81.ab3 a2 (82.b4 a1Q 83.Kg2 Qa8 84.Kf2 Qf8 85.Ke3 g5 86.Ke4 Qf4 87.Kd5 Qb4 88.h3 Qe7 89.Kd4 Qe6 90.Kc5 Qe3 91.Kd5 Qh3 92.Ke5 h5 93.gh5 g4 94.Kd6 g3 95.h6 Qh6 96.Ke7 g2 97.Kd8 Qc6 98.Ke7 g1Q 99.Kf7 Qgg6 100.Ke7 Qgf6#) 0–1. SuperForte5 – KnightStalker, 1993.

4.Qd2 Na6 =+.

4.e4 e6 5.Nf3 -/+.

4.e4 Nf6 5.Bd3 -/+.

5.Nd2 de4 6.Ne4 Qd5 7.Nc5 -+.

5.Nd2 Nf6-/+ 6.Bd3 de4 7.Ne4 Ne4 8.Be4 e6 =+.

5.Nd2 Nf6 6.e5 Nfd7 7.Ngf3 g6 8.Bd3 Bg7 9.c4 bc3 10.Bc3 0-0 11.0-0 b6 12.a4 c5 13.Rc1 Nc6 14.dc5 bc5 15.e6 fe6 16.Bg7 Kg7 17.Bb5 Bb7 18.Qe2 Rf6 19.Qd3 c4 20.Qc3 e5 21.Bc6 Bc6 22.Ne5 Ne5 23.Qe5 e6 24.Nb3 Qe7 25.Nd4 Ba4 26.Rfe1 Re8 27.h3 Qd7 28.Rc3 Kf7 29.f4 Kg7 30.Kh1 h6 31.Rce3 Qa7 32.Ra3 Qd7 33.Rae3 Qb7 34.Rc3 Qb6 35.Rcc1 Qa7 36.Re2 Qf7 37.Rd2 Ra8 38.Re2 Bd7 39.Rd2 Ra3 40.Rb2 Bc8 41.Rb8 Qd7 42.Rb6 Kf7 43.Rc6 Ra7 44.Rd6 Qe8 45.Rb6 Ra2 46.Rb8 Qd7 47.Nb5 Ra6 48.Rb1 Kg7 49.Nc3 Ra7 50.Rd1 Rb7 51.Ne4 Rb8 52.Qf6 Kg8 53.Qg6 Kf8 54.Nf6 Qf7 55.Qh6 Ke7 56.Ng4 Rb3 57.Qh4 Kd6 58.Ne5 Qc7 59.Qf6 Kc5 60.Rc1 Qd6 61.Qg7 Ba6 62.Qa7 Kb5 63.Rd1 Ra3 64.Rb1 Rb3 65.Rb3 cb3 66.Qe3 Ka4 67.Qc1 Bb7 68.Qa1 Qa3 69.Qd4 Kb5 70.Qd3 Ka4 71.Qd4 Kb5 72.Nd3 Qd6 73.g4 Qe7 74.Kg1 Ba8 75.g5 Qd6 76.g6 e5 77.Ne5 Qf6 78.Qc3 Qf4 79.Qb3 Ka5 80.Qa3 Kb5 81.Qb2 Ka5 82.Qa2 Kb6 83.Qf2 Qf2 84.Kf2 d4 85.Nd7 Ka7 86.Nf6 d3 87.Ke1 d2 88.Kd2 Bg2 89.g7 Bh3 90.g8Q Bf5 91.Qg7 Kb6 92.Ne8 Kc6 93.Qc7 Kd5 94.Qa5 Ke6 95.Ng7 Kd7 96.Qf5 Kc6 97.Qe5 Kd7 98.Qd5 Ke7 99.Qe6 Kd8 100.Qd6 Kc8 101.Ne6 Kb7 102.Nc5 Kc8 103.Qd7 Kb8 104.Qb7 1–0. COMP – COMP, 1994.

5.Nd2 Nf6-/+ 6.e5 Bg4 7.f3 Bf5 8.ef6 ef6 9.Ne2 +/–.

5.ed5 cd5 6.Nf3 Nf6 -/+.

5.ed5 Qd5 6.a3 Qe4 7.Ne2 e6 =+.

4.c3 Na6 5.cb4 Nb4 6.a4 (6.Qb3 e6 7.Nf3-/+) 6...b5 (better 6...d5!?-/+) 7.ab5= Ra1 8.Ba1 Qb6 (8...Qa5 9.Bc3=) 9.bc6 Nc6 10.Nf3 Ba6 11.Be2?? (better 11.Ba6 Qa6 12.Bb2=) 11...Be2-+ 12.Ke2 Qa6 13.Ke1 (13.d3 Qa1 14.Nbd2 Qa5-+) 13...Qa1 14.h4 Nb4 15.Qb3 Qa5 16.h5 e6 17.h6 (17.Qc4 Ne7-+) 17...Nh6 18.Ne5 (18.Ke2 Be7-+) 18...Qb5 (better 18...Qe5 19.Rh4 Qb5-+) 19.Nc3 (19.d4-+) 19...Nd3 20.Kd1 Qb3 (20...Qb3 21.Ke2 Ne5-+) 0-1. brucepeng (1935) - Ryu456 (1960), lichess.org, 2020.

4.c4 bc3 (--> 4.c3 bc3).

4.Bd3 Nf6 5.Nh3 g6 6.Qf3 Bg7 7.0-0 (7.a3 ba3 8.Ra3 Ra3 9.Na3 d5-/+) 7...d5 8.c3 (8.a4!?-/+) 8...Bg4 9.Qg3 h5 (9...Qd7 10.Rc1-+) 10.f3 (10.Ng5!?-/+) 10...h4 11.Qf2 Bh3 12.gh3 Nbd7 (12...bc3 13.Nc3 Qd7 14.Kg2-+) 13.Qg2 (better 13.cb4!? Rh5 14.Be2-/+) 13...bc3 14.dc3 (14.Nc3 Nb6-+) 14...Ne5 15.Bc2 Rh5 16.c4? (16.Bc1-+) 16...Nc4 17.Bf6 (17.Bd4 e5 18.Bg6 ed4 19.Bh5 Nh5 20.Rc1-+) 17...Bf6 18.f4 (18.Nd2 Rg5 19.Qg5 Bg5 20.Nc4 dc4-+) 18...Ba1 19.f5 (19.Qf3 Qb6 20.Bb3 Qe3 21.Kg2 Bd4-+) 19...Ne3 20.Qf2 Nf1 (better 20...Rg5 21.Kh1 Nf1 22.Qf1-+) 21.Qf1 Rf5! 22.Bf5 gf5 23.Qf5 Qd7 (better 23...Ra2 24.Kf1 Bd4-+) 24.Qh5 0-0-0 (24...Qh3 25.Nc3 Kd7 26.Kf2 Bc3 27.Qg4 Qg4 28.a4 Ra4 29.Ke3 Ra2 30.h3 Qe4) 25.Qe2 Rg8 26.Kh1 Qf5 27.Qd2 (27.Nc3 Bc3 28.Qg4 Rg4 29.hg4 Qf1) 27…Qb1 (27...Qb1 28.Qd1 Qd1; 27...Qf1) 0-1. Juamadivarius - danieldima (2260), Rated Bullet game, lichess.org, 2016.

4.d4 b6 5.Nf3 Ba6 6.Ba6 Na6 7.Qe2 Qc8 8.0-0 e6 9.Ne5 f6?? (better 9...d6 10.Nc4 Qd8-/+) 10.Qh5+/- Kd8?? (better 10...Ke7 11.Ng6! hg6 12.Qh8 Nh6+/-) 11.Nf7+- Kc7 12.Nh8 Bd6 (12...Nh6 13.a3 ba3 14.Ba3 Ba3 15.Ra3 Qh8 16.Nc3+-) 13.Nf7 (13.Qh7 Nh6 14.Ng6 Qg8 15.Qg8 Ng8+-) 13...Qf8 (13...Qe8 14.g4 Nh6 15.Nh6 Qh5 16.gh5 gh6+-) 14.Nd6 Qd6 15.Qf7 (15.Qh7 g5+-) 15...c5 (15...Qe7 16.Qe7 Ne7+-) 16.Qg7 h6 17.dc5 Nc5 18.Bf6 Ne4 (18...Nf6 19.Qf6 e5+-) 19.Be5 Qe5 20.Qe5 Nd6 21.Rd1 (21.Rd1 Nf6 22.Rd6+-) 1-0. kasperoff (1835) – Sopiandri, Hourly SuperBlitz Arena, lichess.org, 2019.

4.Nf3 b5 =+.

4.Nf3 c5 5.d4 b6 6.Bb5 (6.a3 ba3 7.Ra3 Ra3 8.Na3 cd4 9.Bd4 Nc6=+) 6...Ba6=+ 7.Qd3 (7.Ba6 Na6 8.c4 e6=+) 7...Bb5 8.Qb5 Qc7 (8...e6 9.a3=+) 9.c3 Qc6 10.Qc6 (10.Qe2 Na6=+) 10...dc6 11.cb4 cb4 12.Nbd2 Nf6 13.Nc4 Nbd7 14.Nfe5 (14.Ke2 e6-/+) 14...Rc8 (14...b5 15.Nd7 Nd7 16.Nd2-/+) 15.0-0 (15.Nd7 Nd7 16.Ke2 e6-/+) 15...e6 16.a3 (16.Rfc1-/+) 16...Be7 (16...b5 17.Nd7 A) worse 17...bc4 A1) worse 18.Nf8 c3-/+ (worse 18...Kf8 19.ab4 Ne4 20.f3+/-; worse 18...Rf8 19.ab4 Kd7 20.Rfc1+=); A2) 18.Nf6 gf6 19.ab4+=; B) worse 17...Kd7 18.Nb6 Kc7 19.Nc8 ba3 20.Ba3 Ba3 21.Ra3+-; C) 17...Nd7-/+) 17.ab4=+ 0-0 (better 17...b5 18.Nd7 Nd7= (worse 18...bc4 19.Nf6 Bf6 20.Rfc1+/-)) 18.Ra7+/- Ne5 (18...Rfd8 19.Nb6! Nb6 20.Re7+/-) 19.de5+- (19.Ne5?! Bb4 20.Ra6 Ba5=) 19...Bb4 (better 19...Nd5 20.e4 Rc7+-) 20.ef6 Rfd8 (20...Ra8 21.Rb7 g6 22.Rb6+-) 21.Nb6 (21.fg7 Ra8 22.Rb7 h6+-) 21...Rb8 22.Nc4 (22.Nd7 Rb5 23.Ba1 Rd5+-) 22...Bc5 (22...g5+-) 23.fg7 (better 23.Ra5 Bb4 24.Ra6 gf6 25.Bf6+-) 23...Ba7= 24.Bf6 Rd3 (better 24...Rd5!?=) 25.Ne5+/- Rc8?? (25...Rd5 26.Nc6 Rb7+/-) 26.Ng4 (better 26.Nd3 Bb6 27.Rb1+-) 26...h5+= 27.Nh6 Kh7 28.Nf7 Rg8 (28...Bb8 29.Rc1+=) 29.Ne5+/- Rd2 (29...Rd6 30.Ra1+/-) 30.h4 (30.Nc6 Bc5+/-) 30...Rg7 (30...c5 31.g4+/-) 31.Nf3 (31.Bg7!? Kg7 32.Nc6 Bc5+-) 31...Rc2 32.Ng5 Kg6? (better 32...Rg5!? 33.hg5 Kg6+/-) 33.Bg7+- Kg7 34.Ne6 Kf6 35.Nf4 Rd2? (35...Kf5+-) 36.Nh5 Kf5 37.Ng3 Kg4 (37...Kg4 38.Rc1 Be3+-). ClayPigeons (2065) - Bertnico (2045), Rated Bullet game, lichess.org, 2020.

4.Nf3 d5 =+.

4.Nf3 e5 5.Be5 d6 6.Bb2 Nf6 7.a3 Be7 (7...ba3!? 8.Na3 Be7=) 8.ab4+= Ra1 9.Ba1 d5 10.Nc3 (better 10.b5!?+/-) 10...Bb4= 11.Qb1 Bd6 12.Bd3 Nbd7 13.h3 Ne5 (13...b5 14.Ne2=+) 14.Ne2 (14.Ne5!? Be5 15.Ne2 Ba1 16.Qa1=) 14...Nd3=+ 15.cd3 Bf5 (15...0-0 16.Be5=+) 16.Ned4 (better 16.Qb7!? 0-0 17.Nc1+=) 16...Bc8=+ 17.g4 (17.0-0 0-0=+) 17...0-0-/+ 18.g5 Nd7 (18...Nh5!?-/+) 19.Nf5=+ Ne5 20.Nd6 (better 20.Be5!? Bf5 21.Bd6 Qd6 22.Nh4-/+) 20...Nf3-+ 21.Ke2 Qd6 22.Qb2 (22.Kf3 Qg6-/+) 22...d4 (22...Qg6 23.Kf3 Bf5 24.Rg1-+) 23.Kf3 Be6?? (23...c5 24.Ke2-+) 24.Ke2?? (24.Qd4 Qd4 25.Bd4 Ra8+=) 24...Bd5 (better 24...c5!?-/+) 25.Qd4= f6 (25...Qg6!? 26.Rb1 b5=) 26.Rg1 (better 26.e4 Qe7 27.Bc3+/-) 26...Qe7?? (better 26...c5 27.Qb2 c4 28.gf6 cd3 29.Ke1 g6+/-) 27.gf6+- Bf3 28.Kf3 (better 28.Ke1 Rf6 29.Qf6 Qf6 30.Bf6+-) 28...Rf6 (28...g6+-) 29.Qf6 Qf7 30.Rg7 (30.Rg7 Kh8 31.Rf7 Kg8 32.Qg7) 1-0. Mamontmamont (2290) - universe64 (2490), lichess.org, 2020.

4.Qg4 d5 5.Qb4=+ e5 6.Qb3 Qc7 (6...Nd7 7.Nf3 Nc5 8.Qc3-/+) 7.c4 (7.Nf3 Bd6=) 7...Be6 (7...Nf6 8.cd5 Nd5 9.e4=+) 8.Nf3 Nd7 9.d4 (9.Ng5 Bc5=) 9...Bd6 (9...e4 10.cd5 Bd5 11.Bc4 Bc4 12.Qc4 ef3 13.gf3–+) 10.Ng5 (10.de5 Ne5 11.Ne5 Be5 12.Be5 Qe5=+) 10...Ngf6 (10...e4 11.Ne6 fe6 12.c5=) 11.c5 Be7 12.g3 (12.Ne6 fe6 13.Be2 0-0=) 12...Rb8 (12...Bf5!?-/+) 13.Ne6= fe6 14.Bh3 (14.Nc3 ed4 15.ed4 e5-/+) 14...Kf7 (14...ed4 A) 15.Bd4? e5–+ (15...Bc5?! 16.Be6 Bd4 17.ed4=+); B) 15.ed4 b6 16.Be6 bc5 17.Qc2-/+) 15.0-0 (15.Nd2 ed4 16.ed4 b6=) 15...b6 16.cb6 (16.de5 Ne5 17.cb6 Nf3 18.Kg2 Rb6-/+) 16...Rb6 (16...Nb6 17.Qc2=+) 17.Qc2 Rhb8 18.Bc3 Bb4 (18...c5 19.Ba5 ed4 20.ed4+/–) 19.Rc1 (19.a4 Bc3 20.Nc3 ed4=) 19...Bc3= 20.Nc3 (20.Qc3 ed4 21.ed4 e5=+) 20...ed4 (20...Rb2 21.Qd3 Qa5=+) 21.Na4 (21.ed4 c5 22.Na4+=) 21...Rb4-/+ Black gets in control 22.ed4 Rd4 23.Qe2? (better is 23.Nc5 Nc5 24.Qc5-/+) 23...Ra4–+ 24.Qe6 Kf8 25.Rc6 Qe5 26.Qe5 Ne5 27.Rc7 Rd8 28.Rb1?! d4 29.Rbb7 d3 30.Bf1 d2 31.Be2 Re4 (32.Rg7 Re2 33.Rgf7 Nf7–+; < 31...Ra2 32.Kg2–+) 0–1. Kuhn,Heinz – Biegler,Markus, Saarland–chB, 1993.

5.Nc3 d5 6.Bd3 (6.Nf3 Nf6-/+) 6...e5 7.f3 (7.Be2 Nf6-/+) 7...Bd6–+ 8.Nge2 Qh4 9.g3 Qh3 10.Kf2 (10.Qc2 Nf6–+) 10...Nf6 11.Qc2 (11.Bc2 Na6–+) 11...Na6 12.a3 (12.Ng1 Qh5–+) 12...Nc5 13.Na2 (13.Ng1 Nd3 14.Qd3 Qh5–+) 13...e4 (13...Nd3 14.Qd3 b5 15.Rac1–+) 14.fe4 de4 (14...Nd3 15.Qd3 Ne4 16.Kg1–+) 15.Bc4 Bg4 (15...b5 16.Bf6 Qf5 17.Kg1 gf6 18.Nd4–+) 16.Nf4 Bf4 17.ef4 Bf3 18.Bf6 gf6 19.Bf1 (19.Qc3 Bh1 20.Rh1–+) 19...Qd7 20.Bg2 (20.Qc3 Na4 21.Qe3 Bh1 22.Be2–+) 20…Qd4 (21.Ke1 Qa1 22.Nc1 Bg2 23.Qc5 Bh1–+) 0–1. Pietrzak,Wojciech – Luzuriaga,Norberto Horacio, Orang–Utan Invitational, 2002.

5.Nc3 Nf6 6.Nf3 d6 (6...d5 7.Rb1-/+) 7.Be2 (7.d4 d5=+) 7...e5-/+ 8.0-0 Be7 (8...Nbd7 9.Rb1-/+) 9.d4 (9.Qc2 Bg4=+) 9...e4-/+ 10.Nd2 d5 11.Qc2 (11.f3 ef3 12.Nf3 0-0-/+) 11...0-0 12.a4 (12.f3 ef3 13.Nf3 Re8-/+) 12...Bd6 (12...Na6 13.f3 Nb4 14.Qb3 ef3 15.Rf3–+) 13.Qb3 (13.Ba3 Ba3 14.Ra3 b6-/+) 13...Qc7 14.h3 Qe7 (14...b6 15.Ba3 Nbd7 16.Rfc1-/+) 15.Ba3 Ne8 (15...Ba3 16.Ra3 b6 17.Rfa1=+) 16.Bd6=+ Nd6 17.a5 Na6 18.Ba6 (18.Rab1 Qg5 19.Kh2 Be6-/+) 18...Ra6-/+ 19.Qb6?? (better is 19.Rfb1-/+) 19...Rb6–+ (20.ab6 Qg5–+) 0–1. alexy1 (1860) – kanza (2185), ICC, 2003.

5.Bd3 Nh6 6.Qg3 d6 7.f4 Nf5 8.Qf2 ef4 9.ef4 Be7 10.Ne2 Bh4 11.g3 Bf6 12.c3 0-0 13.0-0 Re8 14.a3 bc3 15.Nbc3 Na6 16.Rfe1 Nc5 17.Bc2 Nh6 18.Rab1 Bf5 19.Bf5 Nf5 20.Qf3 d5 21.g4 Nh4 22.Qh3 d4 0–1. Roos – Elzerman, email CTON 1996.

5.Qf3 d6 6.d4 -/+.