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TESTH990 Release 2022-05-22
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 e5 2.b5 d5

(...)

3.Ba3 Be7 4.e3 Ba3 5.Na3 Qe7 6.Qc1 Nf6 7.Qb2 a6 8.c4 ab5 9.Nb5 c6 10.Nc3 dc4 11.e4 (better is 11.Bc4!? b5 12.Bb3+=) 11...b5–+ Black claimed a win on time 0–1. xorb – marekt, ChessWorld.net, 2013.

3.Ba3 Bf5 4.Bf8= Kf8 5.Nf3 e4 6.Nd4 Nf6?? (6...Qf6 7.c3=) 7.e3?? (better is 7.Nf5 Ng4 8.Nc3+–) 7...Bd7= 8.d3 a6 9.Na3 (9.Nc3 ab5 10.de4 Ne4 11.Nd5 c6–+) 9...c6 (better is 9...ab5 10.Nb1 c5–/+) 10.de4? (10.bc6 Qa5 11.Qd2 Qd2 12.Kd2 Nc6 13.Nc6 Bc6+=) 10...de4?? (10...Qa5!? 11.Qd2 Qa3 12.bc6 Nc6 13.ed5–+) 11.ba6? (better is 11.bc6 Nc6 12.Qd2=) 11...Ra6?? (better is 11...Qa5 12.Qd2 Qa3 13.ab7 Ra7–+) 12.Ba6+/– Na6 13.0-0 h5 14.f3 Nd5? (14...Qe7 15.Nc4+–) 15.Qd2 (15.fe4 Ndc7 16.Nf5 Kg8+–) 15...b5? (better is 15...Qe7 16.Nc4 Rh6+–) 16.fe4 Ne7 (16...Nf6+–) 17.Ne6 Be6 18.Qd8 1–0. Droogstoppel – Novice, playchess.de, 2001.

3.a4 Bb4 4.e3 (4.Nf3 Nd7=+) 4...Bf5 (4...Nf6 5.Bb2 Nbd7 6.Nf3=+) 5.h4 (5.Nf3 Nd7=+) 5...Qd6 (5...Nf6 6.Bb2 Nbd7 7.Nf3–/+) 6.f3 (6.g4 Be6–/+) 6...Nh6 (6...Qg6 7.g4 Bc2 8.h5 Bd1 9.hg6–/+) 7.g4 Bd7 (7...Be6 8.c3 Bc5 9.d4 ed4 10.ed4 Qg3 11.Ke2=+) 8.Bb2 (8.c3 Ba5=+) 8...a6 (8...0-0 9.Nc3–/+) 9.c4 (9.Nc3 0-0–/+) 9...ab5 10.cb5 (better is 10.ab5 Ra1 11.Ba1–/+) 10...Qc5 (better is 10...0-0!?–/+) 11.Be5= Rg8 (11...Qe3 12.Qe2 Qe2 13.Be2+=) 12.Bd4 (12.Nc3 f6 13.Bd4 Qd6+/–) 12...Qd6+= 13.Rh3 (13.Ne2 c5 14.Bc3 Ba5+=) 13...c6 (13...f5 14.g5 Nf7 15.f4+=) 14.Qc2 (better is 14.Bd3 f5 15.g5+=) 14...Qc7? (14...f5 15.g5 Nf7 16.Ne2+=) 15.Bb2 c5? 16.Qh7+– Ng4?? 17.Qg8 Ke7 18.fg4 Bg4 19.Qg7 Bf5 20.Qf6 Kf8 21.Qf5 d4 22.Rf3 de3 23.Be5 Qd7 24.Qd7 Nd7 25.Re3 Ne5 26.Re5 Rd8 27.a5 Rd4 28.h5 Rg4 29.Kf2 c4 30.Kf3 Rg1 31.Bc4 Bd6 32.Rd5 Bg3 33.Rg5 Rf1 34.Bf1 Bc7 35.h6 (35...Be5 36.Re5+–) 1–0. riverborne – lossbut1, Caissa.com, 2004.

3.a4 c6 4.e3 cb5 5.Bb5 Bd7 6.Nc3 Bb5 7.Nb5 a6 8.Nc3 Nc6 9.Qf3 Nf6 10.Bb2 e4 11.Qg3 Qb8 12.Nge2 Qg3 13.fg3 0-0-0 14.0-0 Rd7 15.Ba3 (15.Nd1!?=+) 15...Ba3 16.Ra3 Ne5 17.d4 Nc4 18.Raa1? (better is 18.Rb3–+) 18...Ne3 19.Rfc1 Rhd8 20.Nf4 Nc4 21.Ra2 Rc7 22.Nce2 g5 23.Nh3 h6 24.c3 Ng4 25.Nf2 Nf2 26.Kf2 Rd6 27.g4 Rf6 28.Kg1 Rcc6 29.Rf1 Rf1 30.Kf1 Rb6 31.Kf2 Rb2 32.Rb2 Nb2 33.a5 (33.c4–+) 33...Nc4 34.Ng3 Nd6 35.Ke3 Kc7 36.Nh5 b6 (36...Nc4 37.Kf2–+) 37.ab6 Kb6 38.Nf6 Kc6 39.g3 (39.Ng8 Kb5 40.Nh6–+) 39...Nc4 40.Ke2 a5 41.Kd1 a4 42.Nh5 (42.Ne4 de4 43.Kc2 a3–+) 42...Kd6 (better is 42...a3 43.Ke2 a2 44.Nf6–+) 43.Kc2 Ke7 (better is 43...a3 44.Kb3 e3–+) 44.Ng7 Ne3 (better is 44...e3 45.Nf5 Kd7 46.Ne3 Ne3 47.Kb2–+) 45.Kb2 (45.Kb1 Ng4 46.h3 e3 47.Nf5 Ke6 48.Ne3 Ne3–+) 45...Nf1 (45...Kf8 46.Ne6 fe6 47.Kc1–+) 46.h4 (46.Nf5 Kf6 47.Ka3–+) 46...Ng3 47.hg5 hg5 48.Nh5 Nf1 (better is 48...Nh5 49.c4 e3 50.Kc2–+) 49.Ka3 (49.Ng7 e3 50.Nf5 Ke6 51.Ne3 Ne3–+) 49...Ne3 (better is 49...e3–+) 50.Ka4 Ng4 51.Kb3 f5 52.Kc2 Nf6 (52...f4!? 53.Kd2–+) 53.Ng3 Ke6 54.Kd2 f4 55.Ne2 Kf5 56.Ng1 g4 57.Ke2 g3 58.Nh3 (58.Nf3 ef3 59.Kf3 Ne4–+) 58...Kg4 (better is 58...f3 59.Kd2–+) 59.Ng1 f3 60.Kf1 e3 61.Ke1 (61.Nf3 Kf3 62.Ke1 g2 63.Kd1 g1Q 64.Kc2 Qh2 65.Kb3 e2 66.Kb4 Qb8 67.Ka3 e1Q 68.Ka2 Qe2 69.Ka3 Qa6) 61...f2 62.Kf1 (62.Kd1 fg1Q 63.Kc2 e2 64.Kb2 e1Q 65.Kb3 Qb1 66.Ka4 Qb2 67.c4 Qga1) 62...fg1Q 63.Kg1 Kf3 (63...e2 64.Kg2 Nh5 65.Kg1 e1Q 66.Kg2 Nf4) 64.Kh1 (64.Kf1 g2 65.Kg1 e2 66.Kh2 e1Q 67.c4 Qh1) 64...e2 0–1. chooch555 – kim22, Live Game Caissa's Web, 2004.

3.a4 d4 4.e4 (4.Bb2 Bd6=) 4...de3 5.Qe2 (5.de3!? Bd6 6.Bb2=) 5...ed2 (5...Qd4 6.Nc3 ef2 7.Qf2 Qf2 8.Kf2 Bc5 9.Ke1–/+) 6.Bd2 Qf6 (6...Bd6 7.Bc3–/+) 7.Bc3 (7.Nc3 Bf5–/+) 7...Nd7 (7...Bd6 8.Nd2–/+) 8.g3 (8.Nd2 Bd6–/+) 8...Bd6–/+ 9.Bg2 (9.f4 Ne7–/+) 9...Ne7 10.g4 (10.Nd2 0-0–/+) 10...0-0 (10...Nb6 11.h4–+) 11.h4 (11.Nd2 Nb6–/+) 11...Ng6 12.g5 Qe6 13.Be4 (13.Bd2 Rd8–/+) 13...Nf4–+ 14.Qf3 Nc5 15.Ne2 (15.Nd2 Qg4–+) 15...Ne2 (15...Ne4 16.Qe4 Qd5 17.Qd5 Nd5 18.Bb2–+) 16.Qe2 Ne4 17.Qe4 Qf5 18.Qf5 (18.f3 a6–+) 18...Bf5 19.f4 (better is 19.Na3–+) 19...ef4 20.Ra2 (20.Kd1 Rfe8–+) 20...Rae8 (20...Rfe8 21.Kd1–+) 21.Kd1 Bc5 22.Nd2 Be3 23.Bb4 Bg4 (24.Kc1 Rd8–+) 0–1. riverborne – desmond, Caissa.com, 2004.

3.a4 Bf5 4.d3 d4 (4...Nf6 5.Nf3 Bd6 6.Bg5–/+) 5.Nf3+= Nd7 6.e3 de3 7.Be3 e4 8.Nd4 Qf6 9.Nc3 (9.Nf5!? Qf5 10.Nd2+=) 9...Bb4+= 10.Qd2 Bc3 (10...Nc5 11.Rb1 Ba5–/+) 11.Qc3+= c5? (11...Qe5+=) 12.Ne2?? (better is 12.bc6!? bc6 13.Qc6 Qc6 14.Nc6+–) 12...b6 (12...ed3 13.Qf6 Ngf6 14.Ng3=) 13.Qf6 Ngf6 (13...gf6? 14.Ng3 Be6 15.de4+–; worse is 13...Ndf6 14.a5 Rd8 15.d4+=) 14.de4 Bg6? (better is 14...Be4 15.0-0-0 Ng4=) 15.f3+– Ne5 16.Nf4 0-0 17.Rd1 Nc4?? (better is 17...Rad8+–) 18.Bc4 Nh5 (18...Rfe8 19.Ng6 hg6 20.Ke2+–) 19.Ng6 hg6 20.Rd7 (20.g4 Nf6 21.g5 Ne8+–) 20...Nf6 21.Rb7 Rad8 22.Ra7 Rd6 (22...Rd7 23.Ra6 Rb7 24.a5+–) 23.e5 (23.a5!? ba5 24.Bc5 Rd7 25.Rd7 Nd7 26.Bf8 Kf8+–) 23...Rd7 24.Rd7 Nd7 25.e6 Ne5 26.ef7 Kh7 27.Bd5 Nf7 28.Bf7 (28.a5!? ba5 29.b6 c4+–) 28...Rf7 29.0-0 Rb7 (29...Ra7 30.Ra1 Ra5 31.Bc5 bc5 32.b6+–) 30.Ra1 c4 (30...Re7 31.Kf2+–) 31.Kf2 (31.Ra3!? g5+–) 31...g5 32.Bg5 Kg6 33.h4 Kf5 34.Re1 Ra7 35.g4 Kg6 36.Re6 Kf7 37.Rb6 Ra4 38.Ra6 Rb4 39.b6 Rb2 (39...Ke6 40.Bd2 Rb1 41.h5+–) 40.Ra7 Kg6 41.b7 Kf7 42.b8Q (42.b8Q Ke6 43.Qc8 Kd6 44.Rd7 Ke5 45.Qe8) 1–0. Sundfar – Innessa, playchess.de, 2005.

3.a4 f6 4.Ba3 Ba3 5.Na3 Qd6 6.c4 d4 7.d3 Bg4 8.Qd2 Ne7 9.g3 c5 10.Bg2 Bc8 11.a5 Nd7 12.Nf3 0-0 13.0-0 Rb8 14.Rfb1 b6 15.ab6 ab6 16.Nc2 Bb7 17.Ra7 Qc7 18.Rba1 Ra8 19.Nce1 Ra7 20.Ra7 Ra8 21.Qa2 Qb8 22.Ra8 Qa8 23.Qa8 Ba8 24.Nd2 Bg2 25.Kg2 f5 26.Nb3 Kf7 27.Nc2 Ke6 28.e3 g5 29.f3 h5 30.Kf2 g4 31.fg4 hg4 32.ed4 cd4 33.Nb4 Nc5 34.Nc5 bc5 35.Na6 Kd6 36.b6 Kc6 37.b7 Kb7 38.Nc5 Kc6 39.Ne6 Kd6 40.Ng7 e4 41.de4 fe4 42.Ke2 Ke5 43.Ne8 Nf5 44.Nc7 d3 45.Ke1 Kd4 46.Ne6 Kc4 47.Ng5 e3 48.Ne4 Kd4 49.Nf6 Nh6 50.Kd1 Kc3 51.Ne4 Kd4 52.Nf6 e2 53.Kd2 Kc4 54.Ne4 Nf5 55.Nf2 e1Q 56.Ke1 Kc3 57.Kf1 Ne3 58.Kg1 Kc4 59.h4 gh3 60.Kh2 d2 61.Kh3 Kd4 62.g4 Ng4 63.Kg4 Ke3 64.Kg3 Ke2 65.Kg2 Ke3 66.Kg1 Ke2 67.Kg2 Ke3 68.Kg1 Kf3 69.Kf1 Ke3 70.Kg2 Ke2 71.Kg1 Kf3 0–1. imzchessacademy2020 (2160) – pudman79 (2150), lichess.org, 2020.

3.a4 g6 4.Bb2 Bg7 5.e3 Ne7 6.f4 d4 7.Nf3 Nd7 8.fe5 Be5 9.ed4 Bf4 10.g3 Bd6 11.d5 f6 12.c4 Rf8 13.Ba3 a6 14.Nd4 Nb6 15.Ne6 Be6 16.de6 f5 17.d4 c6 18.Bd6 Qd6 19.Bg2 Qe6 20.Qe2 Qe2 21.Ke2 Nc4 22.Nc3 0-0-0 23.Rad1 Rfe8 24.Kf2 g5 25.ba6 ba6 26.d5 Nb2 27.Rd2 Nc4 28.Rd4 Ne5 29.d6 c5 30.Rdd1 Ng4 31.Kf3 Nc6 32.Bf1 Re3 33.Kg2 Rc3 34.Ba6 Kd7 35.Rd2 Ke6 36.d7 Rd7 37.Bc8 Nb8 38.Rb1 Ne3 39.Kh3 g4 40.Kh4 Nc4 41.Re2 Kf6 42.Rb8 Ra7 43.Re6 Kf7 44.Kg5 Re3 45.Rf6 Ke7 46.Bf5 Ra4 47.Rb7 Kd8 48.Rf8 Re8 49.Rb8 Kc7 50.Rbe8 Nd6 51.Re7 Kb6 52.Bg4 Ne4 53.Kh4 Nf2 54.Rf2 1–0. hamiltonharris (1885) – AL HARRIS, ChessWorld.net, 2013.

3.Bb2 Bb4 4.e3 Qe7 5.Nf3 e4 6.Bg7 ef3 7.Qf3 Qf6 8.Bf6 Nf6 9.Qf6 0-0 10.Bd3 Bd6 11.Qh6 Nd7 12.Qh7 1–0. RichardSommer (2010) – borby2 (1890), lichess.org, 2020.

3.Bb2 b6 4.Be5 f6 5.Bb2 Bc5 6.e3 Ne7 (6...a6 7.d4 Bd6 8.c4+/-) 7.Qh5 g6 8.Qh4 Nf5 (8...Nd7 9.Bf6 Nf6 10.Qf6+-) 9.Qf6 Qf6 10.Bf6 Rf8 11.Be5 Nd6 12.Nc3 Bf5? (better 12...Bb7+-) 13.Nd5 Ne4 (13...Kd8+-) 14.Nc7 Kd7 (14...Ke7 15.f3 Nd7 16.fe4 Be4 17.Bg7 Rf1 18.Kf1+-) 15.Na8 Be6 16.f4 (16.f3 Nd6+-) 16...Bb4 (16...Bd6 17.Bd6 Kd6 18.d3+-) 17.Nf3 Bg4 (17...Rc8 18.c3 Bd6 19.a4+-) 18.Bd3 Bf3 19.gf3 Nd2 (19...Nd6 20.h4 Nf7 21.Bd4+-) 20.Ke2 Nf3 (20...Rc8 21.c3 Bc3 22.Bc3 Rc3 23.Kd2+-) 21.Kf3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Bb2 c5 4.Be5 a5 (4...Nd7 5.Bg3+=) 5.e3+/– Ke7 (5...Nf6!?+/–) 6.Nc3 Qd7? (better is 6...Be6+/–) 7.Qf3+– f6 (7...Qe6 8.Nd5 Kd7+–) 8.Nd5 Ke8 (8...Kd8 9.Bc7 Qc7 10.Nc7 Kc7 11.Qf4 Kd7 12.b6+–) 9.Bg3 Bd6 10.Nb6 Be5 (10...Qd8 11.Na8 b6 12.Bc4+–) 11.Nd7 Bc3 (11...Nd7 12.d4 Bg3 13.Qg3 g6+–) 12.Qe4 Kd8 13.Nb6 Ba1 14.Na8 Bd4 15.ed4 cd4 16.Bc7 Kd7 17.Bc4 Nh6 (17...Ne7 18.Bf7 Re8 19.Be6) 18.Qe6 1–0. Pierred (2175) – Moralito, Friendly Game, 1m + 0s, 2005.

3.Bb2 Bc5 (--> 1.b4 e5 2.b5 Bc5 3.Bb2 d5).

3.Bb2 Qd6 (--> 1.b4 d5 2.Bb2 Qd6 3.b5 e5).

3.Bb2 Qd7 4.e3 Nf6 5.Be5 b6 6.Bf6 gf6 7.Nf3 a6 8.c4 ab5 9.cb5 Bg7 10.a4 f5 11.Nc3 d4 12.Nd4 Bd4 13.ed4 Qd4 14.Qe2 Be6 15.Qe3 Qe3 16.de3 Nd7 17.Bd3 Nc5 18.Bc2 Bb3 19.Bb3 Nb3 20.Ra3 Na5 21.Nd5 0-0-0 22.Nf4 Nc4 23.Rc3 Nd2 24.Ke2 Ne4 25.Rd3 Rde8 26.Rhd1 Nd6 27.Rc1 Rd8 28.Nd5 f4 29.Rc7 Kb8 30.Rf7 fe3 31.Nf4 ef2 32.Kf2 Nc4 33.Rd8 Rd8 34.Ne6 Rd2 35.Ke1 Rd6 36.Rh7 Re6 37.Kf2 Nd2 38.Kg3 Ne4 39.Kf4 Nf6 40.Kf5 Nh7 Time forfeit 0–1. RichardSommer (1920) – Eubage (1885), lichess.org, 2020.

3.Bb2 Qe7 (--> 1.b4 e5 2.Bb2 Qe7 3.b5 d5).

3.Bb2 f5 4.a4 e4= 5.e3 Nf6 6.Bf6 (6.Nh3 Bd6=+) 6...Qf6=+ (worse 6...gf6 7.Qh5 Ke7 8.Nh3+=) 7.Nc3 Bd6 (better 7...Be6!?=+) 8.Nd5= Qf7 9.Nf4 0-0 10.h4 (10.a5 Bf4 11.ef4 a6=) 10...Nd7 11.Ngh3 Ne5 12.Ng5 Qf6 13.Nh7?? (better 13.c3=) 13...Kh7-+ 14.g3? (14.Qh5 Kg8 15.Rb1 a6-+) 14...Qe7 (better 14...Nf3!? 15.Ke2 Bf4 16.gf4-+) 15.Be2 (15.Qh5 Kg8 16.Be2-+) 15...Nf3 16.Bf3 ef3 17.Nh3 (better 17.Qf3 Qe4 18.Qe4 fe4 19.d4=+) 17...Bf4?? (better 17...f4 18.Ng5 Kh6 19.gf4 Rf4-+) 18.Ng5?? (better 18.gf4 a6 19.Ng5 Kg8 20.Qf3+-) 18...Bg5=+ 19.hg5 Kg8 20.Qf3 Qg5 21.Qh5 (21.Qd5!? Rf7 22.d4=+) 21...Qh5-/+ 22.Rh5 f4 23.Rg5 (23.ef4 a6 Combination; 23.gf4 a6 Decoy) 23...fe3-/+ 24.Rg7?? (better 24.de3 Bf5 25.a5-/+) 24...Kg7-+ 25.fe3 (25.de3 a6 26.b6 cb6-+) 25...Rf3 26.Ke2 Rg3 27.Rg1 (27.Kf2 Rg4 28.d3 a6 29.ba6 Ra6-+) 27...Bg4 (better 27...Rg1 28.e4-+) 28.Ke1 (28.Kf2 Rg1 29.Kg1-+) 28...Rg1 29.Kf2 Re8 (better 29...Ra1 30.Kg3-+) 30.Kg1 Bd1 31.Kf2 (31.c4 Re4 32.a5 Rc4-+) 31...Bc2 32.e4 (32.a5 Bd3-+) 32...Ba4 33.e5 (33.b6 ab6 34.Ke3 b5-+) 33...Bb5 34.Ke3 Bd7 (better 34...Re5!? 35.Kd4 Re2 36.Kc3-+) 35.d4 Re6 (better 35...Bf5 36.Kd2-+) 36.d5 (36.Ke4 Ra6-+) 36...Rb6 (better 36...Re5 37.Kd4 Kf6 38.Kc3-+) 37.Kd4 Be6! 38.de6 Re6 39.Ke4 (39.Kd5 Kf7-+) 39...Re7 40.Kd4 Kf7 41.e6 (41.e6 Re6 42.Kc4-+). universe64 (2075) - Run_King_Run (2010), Rated UltraBullet game, lichess.org, 2019.

3.Bb2 Bg4 4.h3 Bh5 5.g4 Bg6 6.Be5 Nh6 7.Nf3 (better is 7.Bg2+=) 7...Nf5?? (better is 7...a6+=) 8.gf5+– Bf5 9.Nc3 (9.Rg1 f6 10.Bg3 Bc5+–) 9...Bh3 (9...Nd7 10.Bd4 Nc5+–) 10.Bh3 1–0. DEFFM – GuestJNCH, freechess.org, 2018.

3.Bb2 g5 4.Be5+/– f6 5.Bb2 Bd7 6.e3 a6 7.Qh5 Ke7 8.c4 Qe8 9.Bf6?? (better is 9.Qe8!? Ke8 10.cd5 ab5 11.Nc3+–) 9...Kf6 (better is 9...Nf6!? 10.Qg5 Qg6 11.Qg6 hg6–/+) 10.Qf3+= Ke5?? (better is 10...Kg6 11.Bd3 Kh6+=) 11.d4+– Ke6 12.Nc3 (12.Nc3 Bb4 13.Rc1=; 12.cd5 Ke7 13.d6 cd6 (13...Kd6? 14.Qg3 Ke7 15.Qe5 Kd8 16.Qh8+–) 14.Qe4 Kf6 15.Qb7 Qc8 16.Qf3 Kg7+=) 1–0. Taulien,Christian (2110) – Ich,Nirgendwo (2000), remoteschach.de, 2001.

3.Bb2 Qg5 4.Nf3 Qg6 5.Be5+– Bf5 6.Nh4 Qe6 7.Bc7 Nd7 (7...Qf6!? 8.Nf5 Qa1+–) 8.Nf5+– Qf5 9.e3 (9.c3 Rc8 10.Bg3 Ngf6+–) 9...Rc8 10.Bd3 Qf6 11.Nc3 Rc7 12.Nd5 The passed pawn on d2 will quickly become a dangerous weapon 12...Qd6 13.Nc7 Qc7 14.0-0 Ngf6 15.f4 Bc5 16.Bf5 0-0 17.d4 Bb6 18.a4 (18.Qd3 g6 19.Bd7 Qd7+–) 18...a6 (18...Re8 19.Qd3+–) 19.ba6 ba6 20.Qd3 Rd8 (20...Re8 21.Ra3+–) 21.Qa6 Nd5 (21...Ba5 22.Rab1+–) 22.a5 Ba7 23.Qd3 N7f6 24.a6 (24.Ra4!? g6 25.Bh3 Qc6+–) 24...g6 25.c4 (better 25.Bh3+–) 25...Nf4?? (better 25...Ne3 26.Qe3 Qc4+–) 26.Rf4+– gf5 (26...Qf4 27.ef4 Rd4 28.Kf1 Rd3 29.Bd3+–) 27.Qf5 Qf4 (27...Ne8 28.Rg4 Kf8 29.Qh7 Nf6 30.Qg7 Ke7+–) 28.Qf4 Rd4 29.ed4 (29.ed4 Nh5 30.Qg5 Kf8 31.c5 f6 32.Qh5 Kg8 33.Re1 Kg7 34.Re7 Kf8 35.Qe8) 1–0. GuestKXKG – nolemotion, freechess.org, 2020.

3.c3 (--> 1.b4 e5 2.c3 d5 3.b5).

3.Nc3 Bc5 A) 4.Bb2 Nf6 5.e3 Bd6 6.Nf3 c5 7.bc6 Nc6 8.Nb5 Bb8=+; B) 4.a3 Nf6 5.Nf3 Ne4 6.e3 Nc3 7.dc3 e4 8.Nd4 Nd7=+; C) 4.e3 Nf6 5.Nf3 e4 6.Nd4 0-0 7.Be2 a6 8.ba6 Na6=+.

3.Nc3 Bd6 4.a4 (better is 4.Nd5!? Nf6 5.Nf6 Qf6 6.e4=) 4...Nf6–/+ 5.h3 (5.Nf3 d4 6.Nb1 Be6–/+) 5...0-0 (5...d4 6.Nb1–/+) 6.g4 (6.e3 Be6–/+) 6...d4 7.Nb1 b6 (better is 7...a6!?–/+) 8.Bg2=+ c6 9.Bc6 (better is 9.a5!?=+) 9...Nc6–+ 10.bc6 Qc7 11.f3 (11.Nf3 Qc6 12.Ba3 Ba3 13.Na3 Be6–/+) 11...Qc6–+ 12.d3 (12.c3 e4–+) 12...a5 (12...Nd5 13.a5–+) 13.Bg5 (13.e4 Be6–+) 13...Be7 (13...Nd5 14.Qd2–+) 14.h4? h6 15.Bf6 Bf6 16.Qd2 Be6 17.g5 Be7 18.gh6 gh6?? 19.Qh6= Bd5 20.Qc6 Bc6 21.h5 f5 22.h6 Kf7 23.Rh5 Rh8 24.Rf5= Ke6 25.Rh5=+ Bb4 26.Kf1 Rh7 27.Nh3+/– Rah8? 28.Ng5+– Kf6 29.Nh7 Rh7 30.Kg2 Bc3?? 31.Ra3 Bb4 32.Rb3 Bd5 33.Rb2+– Bf7 34.Rh4 Be1? 35.Rb6 Kg5 36.Rh1 Bb4 37.Rb5 Rh6 38.Re5 Kg6 39.Rh6 Kh6 40.Re4 (40...Ba2 41.Rh4 Kg5 42.Rh1+–) 1–0. riverborne – bonge, Live Game Caissa's Web, 2005.

3.d3 d4 4.e3 c6 5.a4 Qa5 6.Bd2 Bb4 7.Bb4 Qb4 8.Qd2?? (better is 8.c3 dc3 9.Qc2 cb5 10.Nf3+=) 8...Qb2–+ 9.Ra3 Qb1 10.Ke2 c5 11.c4 Qb4 12.Ra1 a6 13.ba6 Ra6 14.Nf3 Ra4 (14...Qd2 15.Kd2 Nc6 16.Be2–+) 15.Ra4? (better is 15.Qb4 Rb4 16.Ra8 Rb2 17.Ke1–/+) 15...Qa4 16.g3 (16.Ne5 f6 17.Nf3 Nc6–+) 16...Nc6 17.Bg2 e4! 18.Ne1 (18.de4 Qc4 Deflection) 18...Bg4 19.f3 ed3 20.Nd3 Be6 21.Nc5 Qc4 22.Nd3 Nge7 23.Rc1 Qd5 24.Nf4 Qb5 25.Kf2 de3 26.Ke3 (26.Qe3 Bc4–+) 26...Nd5 (26...Qb6 27.Ke2 Nd4 28.Kd1–+) 27.Kf2 0-0 28.Bf1 Qb6 29.Kg2 Ne3 30.Kh1 Ne5 31.Re1 Nf1 (31...Nf3?! 32.Qe3 Qe3 33.Re3–+) 32.Rf1 g5 (32...Bc4!? 33.Rf2–+) 33.Qe2 (33.Ne6 Qe6 34.Qg5 Kh8–+) 33...gf4 (better is 33...Qa6 34.Qa6 ba6 35.Ne6 fe6 36.Re1 Nf3 37.Re6–+) 34.Qe5 fg3 (better is 34...h6 35.Qf6 Qb5 36.Rg1–+) 35.hg3?? (better is 35.Qg5 Kh8 36.Qf6 Kg8 37.Qg5 Kh8 38.Qf6 Kg8 39.Qg5=) 35...Bh3 36.Re1 f6 37.Qe7 (37.Qe2 Qd6–+) 37...Qc6 (37...Qf2!? 38.Qe2 Bg2 39.Kh2 Qe2 40.Re2 Bf3 41.Re3–+) 38.Kh2 Bd7 39.f4 Re8 (39...Re8 40.Qb4 Re1 41.Qe1 b5–+) 0–1. islanderfan (2055) – andrewgb (2065), net–chess.com, 2011.

3.d3 Nf6–/+ 4.Nc3 Bb4 (4...d4 5.Nb1–/+) 5.Bd2 c6 (5...Qe7 6.Nf3–/+) 6.bc6 (6.Rb1 Qa5 7.Rb4 Qb4 8.Nd5 Qd6 9.Nf6 Qf6–/+) 6...Nc6 7.Rb1 (7.a3 Ba5–/+) 7...a5 (7...Qa5!? 8.Nb5 Bd2 9.Qd2 Qa2–+) 8.Nb5–/+ Bd2 (8...0-0 9.c3 Be7 10.Nf3–/+) 9.Qd2=+ e4 (9...0-0 10.e3=+) 10.d4 (10.de4 de4 11.Nd6 Ke7=) 10...0-0 11.Rb3 (11.e3 Be6=) 11...Nb4 (11...Be6 12.a4=+) 12.a3 Nc6 13.a4 (13.e3 Be6=+) 13...Re8 (13...Bg4 14.e3=+) 14.Qf4 (14.e3 Bg4=+) 14...Re7 15.Nd6?? (15.e3 Be6=+) 15...Nb4?? (15...Nh5 16.Qg5 Qd6 17.Qh5 Nd4 18.Rb1 Nc2 19.Kd2–+) 16.Nh3?? Nc2–+ 17.Kd1 Nd4 18.Rb7 Bb7 19.Ng5 Qc7 20.e3 Qc2 21.Ke1 Qc1 0–1. Jolilein – Knight, mySchach.de, 2005.

3.d4 a6 4.a4 ab5–/+ 5.e3 Nc6 (better 5...ba4!? 6.de5 c6–/+) 6.Bb5=+ Bd7 (6...Qg5 7.Nf3 Qg2=) 7.Nf3 (7.de5 Qg5 8.Qd5 Nf6=) 7...Bd6 (7...e4 8.Nfd2–/+) 8.Qe2 (better 8.de5 Ne5 9.Qd5 Nf3 10.gf3 Bb4 11.c3+=) 8...e4–/+ 9.Ne5? (better 9.Ng1!?–/+) 9...Ne5–+ 10.de5 Be5 11.Ra3? (11.Bd7 Qd7 12.c3–+) 11...c6 12.Bc6 (12.Qh5 A) 12...cb5?! 13.Qe5 Ne7 14.ab5=+ (worse 14.Qg7 Rg8 15.Qh7 ba4–/+); B) 12...Bd6 13.Bf1 Nf6–+) 12...Bc6 13.0-0 Nf6 14.Nd2 0-0 15.Nb3 (15.f4 ef3 16.Nf3 Bd6–+) 15...Ba4 16.Nc5 (16.Nd4 Qc7 17.h3 Bd4 18.ed4 Bc2–+) 16...Bh2! 17.Kh2 Decoy theme: h2 17...Qd6 A double attack 18.g3 (18.Kg1 Qc5 19.c3 Ra6–+) 18...Qc5 19.f3 (19.c3–+) 19...Bb5 20.Qg2 Bf1 21.Qf1 Ra3 22.Ba3 Qa3 23.fe4 Ne4 24.Qf3 Rc8 25.Qf5 Rc2 26.Kh3 Qe3 27.Qg4 (27.Qf7 Kf7 28.Kg4 Qg3 29.Kf5 g6) 27...Qh6 28.Qh4 Ng5 29.Kg4 Rc4 30.Kf5 Qf6 0–1. WarlpiriMan – Castlegrande, ChessWorld.net, 2004. (=1.d4 d5 2.b4 e5 3.b5 a6)

3.d4 Bb4 4.c3 Ba5 (4...Bd6 5.de5 Be5 6.Nf3=) 5.Bb2 (5.de5!? Bf5 6.Nf3=) 5...ed4 6.Qd4 Nf6 7.g3 (7.e3 0-0+=) 7...0-0–/+ 8.Bg2 Bb6 9.Qd3 Nbd7 10.e3 (10.Bd5? Ne5 (10...Nd5?! 11.Qd5 Qf6 12.Nf3+=) 11.Bf7 Kf7 12.Qd8 Rd8–+) 10...Nc5 11.Qc2 Nce4 12.Nd2?? (12.Nf3 Ng4 13.Nd4 Ngf2–+) 12...Bf5 (better is 12...Nf2 13.Kf2 Ng4 14.Ke2 Ne3–+) 13.Ne4–/+ Ne4 14.Qe2 Re8 15.Nf3 Qd7 (15...Nf2!? 16.Kf2 Re3 17.Qe3 Be3 18.Ke3 Qe8 19.Kf2 Qb5–+) 16.0-0–/+ Bg4 17.a4 a6 (17...Qf5!? 18.a5 Bc5–/+) 18.a5 Bc5 19.ba6 Ra6 20.c4 dc4 21.Qc4 Rc6?? (21...Bf3 22.Bf3 Nd2 23.Qc5 Nf3 24.Kg2 Nh4 25.Kg1 Qg4 26.Qc7 Rh6–/+) 22.Ne5+– Re5 23.Be4 (23.Be5!? Nd2 24.Qf4 f6+–) 23...Be6 24.Bc6 Qc6 (24...Bc4?? 25.Bd7 Rd5 26.Rfd1+–) 25.Qc3 Rh5 1–0. Pawndynasty – Arsenio, playchess.de, 2002.

3.d4 c6 4.a4 cb5 5.ab5 e4 6.e3 Nf6 7.Bb2 Bg4 8.Be2 Be2 9.Ne2 Nbd7 10.Nbc3 Bb4 11.0-0 Ng4 12.h3 h5 13.f3 Ne3 14.Qc1 Nf1 15.Qf1 ef3 16.Qf3 Nf6 17.Nf4 g5 18.Nfd5 Nd5 19.Nd5 Bd2 20.Nf6 Kf8 21.d5 Rg8 22.Nh5 g4 23.hg4 Rc8 24.Bf6 Qc7 25.g5 Qc2 26.Rf1 Qc5 27.Kh1 Bg5 28.Bg5 1–0. axtur777 – dubaandras, lichess.org, 2019.

3.d4 f6 4.Nc3 (4.de5 fe5 5.e4 Nf6=) 4...c6 (4...Bb4 5.Bb2=+) 5.e4 (better is 5.de5 Bb4 6.Bd2=+) 5...cb5 (5...Bb4 6.Bb2 c5–+) 6.Bb5 (6.Nd5 ed4 7.Bb5 Nc6 8.Qd4 Bd6+/–) 6...Bd7 (better is 6...Nc6 7.Nd5 a6+=) 7.de5?? (better is 7.Bd7 Nd7 8.Nd5+/– (8.ed5?! Bb4 9.Nge2 Qa5=)) 7...fe5?? (7...Bb5 8.Nb5 Qa5 9.c3 Qb5 10.Qd5 Qd5 (10...fe5?? 11.Qb5 Nd7 12.Qb7+–) 11.ed5 fe5–+) 8.Qd5 Bb5 9.Qe5 Qe7 10.Qb5 Nc6 11.Bf4 a6 12.Qh5 g6 13.Qd5 Qb4 14.Qe6 Nge7 15.Nge2 Bg7 16.e5?? Nd4–/+ 17.0-0?? Ne6–+ 18.Bg3 Nd4 19.Rab1 Qc4 20.Rfe1 Nef5 21.Rb7 0-0 22.Kf1 Ng3 23.hg3 Be5 24.Ne4 Qc2 25.Ng5 Ne2 26.Re2 Qc1 27.Re1 Qg5 28.Re7 Qe7 (29.f4 g5–+) 0–1. cdamien – blitz, ICC,2003.

3.d4 Qf6 A) 4.de5 Qe5 5.c3 Bg4 6.Qa4 Qe4 7.Qe4 de4 8.Bf4 c6=; B) 4.e3 Bf5 5.Nf3 e4 6.Nfd2 Qg6 7.c4 Nf6 8.Nc3 dc4=; C) 4.Nf3 e4 5.Ne5 Bd6 6.Bd2 Ne7 7.c4 Be6 8.Nc3 Be5–/+; D) 4.c3 e4 5.e3 Be6 6.Ba3 Ba3 7.Na3 Qe7 8.Nc2 Nf6=+; E) 4.Bb2 Bd6 5.e3 Be6 6.de5 Be5 7.Be5 Qe5 8.Nd2 Nd7=.

3.e3 Qd7 4.Be2 (4.Nf3 Bd6=+) 4...c6 (4...Nf6 5.Ba3=+) 5.Nc3 (5.Nf3 Bd6=) 5...d4 (5...Bd6 6.Nf3=) 6.ed4 ed4 7.Ne4 (7.bc6 Nc6 (7...Qc6? 8.Bb5 dc3 9.Bc6 Nc6 10.dc3+–) 8.Ne4 Qe7=+) 7...cb5 (7...Qd5 8.f3=+) 8.Nf3 (8.Rb1 b4 9.Bc4 b5+=) 8...f5 (8...Qc6 9.Bd3 Qd7 10.Qe2+=) 9.Neg5 (9.Ne5 Qd5 10.Bh5 g6 11.Ng3 Qe5 12.Qe2–+) 9...h6 (better is 9...Nf6!?=) 10.Ne5+/– Qe7 11.Ngf7 (better is 11.Bb5!? Nc6 12.Qh5 Kd8 13.Ngf7 Kc7 14.Bc6 bc6 15.Qf3+–) 11...Rh7+/– 12.0-0 (12.Bb5 Bd7 13.Qe2 Nf6+/–) 12...a6 13.Re1 Be6 14.Bh5 Nf6? (better is 14...g6 15.Nd6! Qd6 16.Bg6 Kd8 17.Bh7 Bg7+–) 15.Ng5 Nh5 16.Qh5 Kd8 17.Nh7 Qc5 18.Nf8 Qf8 19.Ng6 Qf7 20.Bb2 Nc6 21.c4 bc4 22.Re2 Kc7 23.Rae1 Re8 24.g3 b5 25.Re6 Re6+= 26.Re6 Qe6 27.Nf8 Qe1= 28.Kg2 Qd2 29.Qf7 Kb6 30.Nd7 Ka5= 31.Nb8?? Qb2 32.Nc6 Ka4?? 33.Qg7?? c3?? 34.Qd4 b4?? 35.Qc5+– Qa2 36.Qb4 1–0. brit3456 – FXRHD, Live Game Caissa's Web, 2005.

3.e3 Qe7 4.Bb2 (--> 1.b4 e5 2.Bb2 Qe7 3.e3 d5 4.b5).

3.e3 Ne7 4.c4 Be6 5.d3 Nd7 6.Bb2 c6 7.a4 d4 8.ed4 ed4 9.Bd4 c5 10.Bb2 Qc7 11.Nf3 Rd8 12.Be2 Nf6 13.Be5 Qc8 14.0-0 Ne4 15.Nbd2 Nc3 16.Qc2 Ne2 17.Kh1 Nd4 18.Nd4 cd4 19.Nf3 Nf5 20.Ng5 f6 21.Ne6 Qe6 22.Bg3 Qc8 23.Rae1 Be7 24.Re4 0-0 25.Rfe1 Ng3 26.fg3 Bc5 27.R1e2 b6 28.Qd1 Rfe8 29.Qe1 Re4 30.Re4 Qf5 31.Re8 Re8 32.Qe8 Bf8 33.Qe2 h6 34.h3 Qc5 35.g4 Qb4 36.Qe6 Kh8 37.Qe8 Kg8 38.Qe6 Kh8 39.Qe8 Kg8 40.Qe6 ½–½. A_VB – JacksonMoraes13, lichess.org, 2019.

3.e3 f5 4.c4 (4.Bb2 Bd6=) 4...c6 (4...d4 5.ed4 ed4 6.Qh5 g6 7.Qf3=) 5.Qb3 (5.Bb2 cb5 6.cb5 Bd6=) 5...Nf6 (5...d4 6.Qc2=) 6.cd5 Qd5 (6...cd5 7.Bb2 Nbd7 8.Nf3=) 7.Qd5 (7.Nf3 Qb3 8.ab3 e4=) 7...cd5 8.Nf3 Bd6 9.Bb2 Nbd7 10.Nh4 (10.Ba3 Ba3 11.Na3 0-0=) 10...Nf8 11.Nf3 Ng6 12.Ba3 Ke7 (12...Ba3 13.Na3 Bd7 14.Nc2=) 13.Be2 Bd7 14.Bd6 Kd6 15.0-0 Rhc8 16.Nc3 Rc7 17.a4 b6 (17...Ne4!? 18.Na2 Nc5=) 18.a5+= Rb8 19.ab6 ab6 20.Ra3 f4 21.Rfa1 Rc5 (21...fe3 22.fe3 Ne7 23.Bf1+=) 22.d4 (22.h3 fe3 23.fe3 Rc7+=) 22...ed4 23.Nd4 fe3 24.fe3 Rbc8 25.Na4 Rc1 26.Kf2?? spoils everything (better is 26.Bd1= would save the game) 26...Ne4 27.Kf3 Rf8 (27...Rf8 28.Nf5 Rf5 29.Kg4 h5 30.Kh3 Rf3; 27...Ne5 28.Kf4 g5) 0–1. Siepe,Hans Joachim – Sauer,Georg, Sauerland Bezirksliga, 2001.

3.e3 g6 4.a4 a6 5.Bb2 Nd7 6.d4 e4 7.c4 Nb6 8.a5 Nc4 9.Bc4 dc4 10.Qa4 Bd7 11.Qc4 Bg7 12.Na3 Be6 13.Qc5 Bf8 14.Qe5 Nf6 15.d5 Bb4 16.Kf1 Qd5 17.Qf6 Kd7 18.Qd4 Ke7 19.Qd5 Bd5 20.Bh8 Rh8 21.Ne2 Ba5 22.g4 c5 23.Kg2 Bc7 24.Nf4 Bf4 25.ef4 Kf6 26.Rhd1 Be6 27.g5 Kf5 28.Kg3 h5 29.h4 c4 30.ba6 ba6 31.Nc2 e3 32.Ra5 Bd5 33.Rad5 Ke6 34.Re5 1–0. hamiltonharris (1845) – AL HARRIS (1640), ChessWorld.net, 2015.

3.e3 h5 4.Nf3 Rh6 (4...e4 5.Ne5=) 5.d4 (5.Ne5 f6 6.Nf3 Bf5+/–) 5...f6?? (better is 5...e4 6.Nfd2 Bg4=+) 6.de5+/– Nd7 (6...Be6 7.e4 Rg6 8.Qd3 de4 9.Qe4+/–) 7.Qd5 Ne5?? (7...Ne7 8.Qd4 fe5 9.Qh4+/–) 8.Bc4 (better is 8.Qg8 Nf3 9.gf3+–) 8...Ne7 9.Qd8 Kd8 10.Ne5 fe5 11.e4 Rg6 12.0-0 Rg4 13.Nc3+– Ng6? 14.h3 Rh4 15.Bg5 Be7 16.Rad1 Ke8 17.Bh4 Bh4 18.Nd5 Kd8 19.Nf4 Ke8 20.Ng6 a6 21.Nh4 ab5 22.Bb5 c6 23.Be2 Ra2 24.Bh5 Kf8 25.Rd8 (25...Ke7 26.Rc8+–) 1–0. Taulien,Christian – Woellner,Nico, remoteschach.de, 2002.

3.e3 Nh6 4.Bb2 Ng4 5.h3 (better is 5.Be2 Nf6 6.Be5+=) 5...Nf2? (better is 5...Nf6 6.Be5 Nbd7+=) 6.Kf2+– Qh4 (6...Bd6 7.c4 Nd7 8.Nc3+–) 7.g3 Qe7 8.Nc3 Be6 9.Bg2 e4 (9...Qf6 10.Qf3 Nd7 11.g4 Qh4 12.Ke2+–) 10.Nge2 Qf6 11.Kg1 Qd8 (11...Bd6 12.d3 Nd7 13.de4 de4 14.Nd4+– (14.Be4?! 0-0-0+–)) 12.Nf4 Bd6 (12...h5 13.d3 (worse is 13.Ne6 fe6 14.Ne2 Nd7+–) 13...Qg5 14.de4 Qg3 15.Qd2+– (15.Ncd5?! Bd5 16.Nd5 c6+–; 15.Ne6?! Qe3 16.Kf1 fe6+–)) 13.Ncd5 Bd5 14.Nd5 Bg3 (14...Be5 15.Be5 Qd5 16.Bd4+–) 15.Be4 c6 16.bc6 bc6 17.Qh5 cd5 (17...g6 18.Nf6 (18.Bh8? gh5 19.c4 cd5 20.Bd5 Nd7–+) 18...Qf6 19.Bf6 gh5 20.Bh8+–) 18.Rf1 g6 (18...Qe7 19.Qd5 a6 20.Rf3+–) 19.Qd5 Qd5 20.Bd5 f6 (20...Be5 21.d4 Nd7 22.Ba8+–) 21.Bf6 Rf8 (21...Nd7 22.Bh8 Rc8 23.Kg2+–) 22.Ba8 Kd7 (22...Rf7 23.Kg2 Bd6 24.Bc3+–) 23.Kg2 Bd6 (23...Na6 24.Bb7 Nc5 25.Bd5+–) 24.Bc3 1–0. pierre – anony, internet, 2015.

3.e4 d4 4.a4 Bc5 5.c4 (5.Nf3 Nf6 (5...Qd6 6.Bc4 Nf6 7.Qe2 a6 8.Bb2 ab5 9.ab5+=) 6.Bc4 Qd6 7.Qe2 a6 8.Bb2 ab5 9.ab5+=; 5.Bc4 Nf6 (5...Nd7 6.Nf3 Ngf6 7.0-0 Qe7 8.Re1 0-0 9.a5+=) 6.Nf3 Qd6 7.Qe2 a6 8.0-0 ab5 9.Bb5+=) 5...Nf6–+ (5...Nd7 6.Nf3 Ngf6 7.Qc2 Ng4 8.Bd3 Qf6 9.0-0+=) 6.d3 (6.Nf3 d3 7.Ba3 Ne4 8.Bc5 Nc5 9.a5–+) 6...h6 (6...Bb4 7.Bd2 Qe7 8.Be2 a6 9.Nf3+=) 7.Nf3 Bg4 (7...Nbd7 8.Be2 a6 9.0-0+=) 8.Be2 Bf3 (8...Qd6 9.0-0+=) 9.Bf3 a6 10.0-0 ab5 11.cb5 c6 12.Ba3 Nbd7 13.Bc5 Nc5 14.bc6 bc6 15.Qc2 Nfd7 16.Nd2 0-0 17.Nc4 Qc7 18.a5 Rfb8 19.Bg4 Nb3 The pressure on the isolated pawn grows 20.Ra3 Na5 (20...Ndc5 21.f4 ef4 22.Qa2=) 21.Na5 (21.Rfa1 Nc4 22.Ra8+–) 21...Ra5?? (better is 21...Nf6 22.Rfa1 Ng4=) 22.Ra5+– Qa5 23.Bd7 Qc3 24.Rc1?? (24.Qd1 Rb7 25.Bc8 Ra7+–) 24...c5 (better is 24...Qc2 25.Rf1 Rb1–+) 25.h3 (25.Qc3 dc3 26.f4 Rd8+–) 25...Rb3 26.Ba4 Ra3 (26...Qc2 27.Rc2 Rd3 28.Rc5+–) 27.Qc3 dc3 28.Kh2?? (better is 28.Bc6+–) 28...Ra4= 29.Rc3 Ra5 30.f3 g5 31.Kg3 h5 32.h4 f6 33.hg5 fg5 34.Kh3 (34.Rb3!?+=) 34...Kg7 35.g3 Kf6 36.Rb3 Ra6 37.Rc3 Rc6 38.Rc4 ½–½. delightful_porridge – RisingFast, ChessWorld.net, 2016.

3.f3 Bb4 A) 4.Bb2 Qg5 5.Nc3 Nf6 6.e3 0-0 7.a3 Bd6 8.Nge2 Re8–/+; B) 4.a3 Bc5 5.e3 Qe7 6.Bb2 Nf6 7.Ne2 0-0 8.Nbc3 Rd8–/+; C) 4.e3 Nf6 5.Bb2 Nbd7 6.c4 c6 7.Qa4 Qa5 8.Qa5 Ba5=+.

3.f3 Bd6 4.g3 (4.Nc3 Nf6 (4...Be6 5.Bb2 Nf6 6.e3 0-0 7.Nge2 c5 8.bc6 Nc6–/+) 5.e4 d4 6.Na4 0-0 7.Nb2 a6 8.Nc4 Bc5–/+; 4.e3 Nd7 (4...Be6 5.Ba3 Ba3 6.Na3 Qh4 7.g3 Qe7 8.Nb1 Nf6–/+; 4...Bf5 5.Bb2 Nd7 6.Ne2 Qh4 7.g3 Qh5 8.Nec3 Ngf6–/+; 4...Nf6 5.d4 ed4 6.ed4 0-0 7.Bd3 Nh5 8.g3 Qf6–/+) 5.Bb2 Nb6 6.f4 ef4 7.Qh5 Nf6 8.Qg5 0-0–/+; 4.Ba3 Ba3 5.Na3 Qe7 6.Qc1 Nf6 7.c4 d4 8.Nc2 0-0–/+) 4...Nf6 (4...Be6 5.Bb2 Nf6 6.e3 0-0 7.f4 e4 8.Bh3 a6–/+; 4...Ne7 5.e4 0-0 6.Bb2 Nd7 7.d4 de4 8.fe4 ed4–/+; 4...c6 5.e3 Nf6 6.Ba3 c5 7.d4 Nbd7 8.c4 ed4–/+; 4...Bf5 5.Nc3 Nf6 6.Nd5 Nd5 7.e4 Be6 8.ed5 Bd5–/+) 5.Bg2 (5.e3 0-0–/+ 6.Bb2 Re8 7.c4 d4 8.Qc2 Bc5–/+) 5...0-0 6.Bb2 c6 (6...a6 7.ba6 Na6 8.e3 Re8–/+) 7.bc6 (7.a4 Bd7 8.Nc3 d4–/+) 7...Nc6 8.Nc3 (8.e3 d4–/+) 8...Be6 (8...d4 9.Nb5–+) 9.Qc1 (9.e3 Re8–/+) 9...a6 (9...Rc8 10.Bh3–+) 10.Bh3 b5 11.a3 Qd7 12.Be6 Qe6 13.Nd1 Rac8 14.Nf2 Rc7 15.e3 Rfc8 16.Ne2 (16.Qb1 d4 17.ed4 ed4 18.Kf1 Ne5–+) 16...Ne7 (16...d4 17.Qd1–+) 17.c3 Qf5 18.0-0 (18.f4!?–+) 18...Qf3 19.Qd1 Qf5 20.d4 (20.Rb1 Qg5–+) 20...e4 (20...Qg5 21.a4–+) 21.Qe1 (21.a4 Qg5–+) 21...Qe6 (21...Rc4 22.Rb1–+) 22.Nf4 (22.a4 Nf5 23.Nd1 ba4 24.Ra4 Ra7–+) 22...Bf4 23.ef4 Ne8 (24.a4 Nd6–+) 0–1. Acevedo,Daiana – Needleman,Gaston, Buenos Aires Najdorf op U14, 2001.

3.f3 Nd7 A) 4.Nc3 Ngf6 5.e4 d4 6.Na4 Ne4 7.Ne2 Nd6 8.Ng3 Be7–+; B) 4.e3 Bd6 5.Bb2 Nb6 6.f4 ef4 7.Qh5 Nf6 8.Qg5 0-0–/+; C) 4.a3 Ngf6 5.e3 Bd6 6.Bb2 0-0 7.d4 c5 8.de5 Ne5–/+; D) 4.Nh3 Ngf6 5.Nf2 Bd6 6.e4 de4 7.fe4 Bc5 8.d3 a6–/+.

3.f3 Be6 A) 4.e3 Nf6 5.Ne2 Bd6 6.Bb2 Nbd7 7.d4 e4 8.Ba3 Ba3–/+; B) 4.Nc3 Nf6 5.e3 Bd6 6.Bb2 0-0 7.Nge2 c5 8.bc6 Nc6–/+; C) 4.Bb2 Nd7 5.d4 Bd6 6.e3 e4 7.Qd2 Qh4 8.Kd1 Ngf6–/+.

3.f3 Bf5 A) 4.e3 Nf6 5.d4 Bd6 6.c4 ed4 7.Qd4 Qe7 8.Bb2 c5–/+; B) 4.Nc3 Bb4 5.Rb1 c5 6.Bb2 Nf6 7.a3 Ba5 8.e3 d4–/+; C) 4.d3 Bd7 5.e4 Bb5 6.ed5 Qh4 7.g3 Qd4 8.c3 Qd5–/+; D) 4.Bb2 Bd6 5.e3 Nd7 6.Ne2 Qh4 7.g3 Qh5 8.Nec3 Ngf6–/+.

3.f3 Nf6 A) 4.e3 Bf5 5.d4 Bd6 6.c4 ed4 7.Qd4 Qe7 8.Bb2 c5–/+; B) 4.d4 Bd6 5.e3 0-0 6.Bb2 e4 7.c4 ef3 8.gf3 Re8–/+; C) 4.Bb2 Bd6 5.e3 Be6 6.Ne2 Nbd7 7.d4 e4 8.Ba3 Ba3–/+.

3.Nf3 Qd6 4.Bb2 e4 5.Ne5? (better is 5.Nd4=+) 5...f6–+ 6.e3 fe5 7.Ba3? (better is 7.Qh5 Qg6 8.Qe5 Qe6 9.Qc7–+) 7...Qg6 8.Bf8 Kf8 9.Qc1 Nf6 10.Qa3 Kf7 11.c4 Be6 12.Qc5 c6 13.Qd6 dc4 14.Qc7 Nbd7 15.Qb7 cb5 16.Nc3 (16.Qb5 Rhb8 17.Qa5 Nd5–+) 16...Rab8 17.Qa7 (17.Qa6 Rb6 18.Qa7 Rhb8–+) 17...Rhc8 (better is 17...b4 18.Nd1 Rhc8–+) 18.Nb5 (18.a3–+) 18...Rb5 19.g3 (19.a4 Rb2 20.Rc1–+) 19...Kg8 (better is 19...Rcb8 20.Rd1 Rb1–+) 20.Qa6 Rb6 21.Qc8–/+ Nf8 22.Bc4=+ Ng4 23.Be6 Qe6 24.Qe6 Ne6 25.0-0 Nc5 26.h3 Nf6 27.a4 Ra6 28.a5 Nb3 29.Rab1 Nd2 30.Rb8 Kf7 31.Rd1? Nc4?? 32.Rb5 Ra5–/+ 33.Ra5 Na5 34.g4 g5 35.Ra1 Nc4 36.Ra4 Nd2 37.Ra5 Kg6 38.Re5?? Nf3 39.Kg2 Ne5 40.f4 ef3 41.Kf2 Ne4 42.Kf1 Nd3 43.Kg1 h5 44.gh5 Kh5 45.Kf1 Kh4 46.Kg1 Kh3 47.Kf1 g4 48.Kg1 g3 49.Kh1 g2 50.Kg1 f2 0–1. MasterofDisaster – AsylumAndTerror2, Live Game Caissa's Web, 2004.

3.Nf3 Bd6 4.Bb2 (--> 3.Bb2 Bd6 4.Nf3).

3.Nf3 f6 4.d4 e4 5.Nfd2 f5 6.Nb3 (6.e3 Nf6=) 6...Nf6=+ 7.Bf4 Bd6 8.g3 (8.Bd6 Qd6 9.e3 a6=+) 8...0-0 9.N1d2 (9.Qd2 a6=+) 9...Bf4–/+ 10.gf4 c6 (10...a6 11.ba6 Na6 12.Rg1=+) 11.e3=+ Be6 (11...a6 12.bc6 Nc6 13.Rg1=+) 12.h4 (12.Nc5 Qe7=+) 12...a6 13.Ke2? (13.ba6!? b6 14.a4=+) 13...Bf7 (13...ab5 14.h5–+) 14.Bg2 Bh5 15.f3 ab5 16.Nc5 Qe7 17.Qg1 Na6 18.Rf1? Nc5 19.Bh3 Ra2 20.Qg5 ef3 21.Nf3 Rc2 22.Ke1 Bf3 23.Rf3–+ Nd3 24.Kf1 Ra8 25.Bf5 Ra1 0–1. steelballs – johnava5, Caissa.com,2004.

3.g3 Bc5 4.e3 Qf6 (4...Qe7 5.Bb2–/+) 5.Bb2=+ b6 (5...Ne7!?=+) 6.Bg2 c6 (6...Bb7 7.f4 Nd7 8.Nf3+=) 7.a4 (7.f4 Nd7+= (7...cb5? 8.Be5 Qg6 9.Bd5+–)) 7...a6 (7...Bf5 8.bc6 Nc6 9.Bd5=) 8.Nc3 (better is 8.f4+=) 8...e4?? (8...ab5 9.ab5 Ra1 10.Ba1=) 9.Nge2?? (9.Nd5 Qb2 10.Nc7 Kd8 11.Na8 Nf6+–) 9...Bg4?? 10.0-0?? Bf3?? 11.d4?? Bg2 12.Kg2 Qf3 13.Kg1 Bd6 14.Qe1 Nf6–/+ 15.Nf4 Ng4 16.Qe2 Nh2?? 17.Kh2+– h5? 18.Qf3 ef3 19.Ba3 Bc7?? 20.bc6+– f5 21.Ncd5 Bf4 22.ef4 Ra7 23.c7 Kd7 24.cb8Q g5 25.Qa7 (25...Kd8 26.Qe7 Kc8 27.Qc7) 1–0. jorginho10 – quantum, Live Game Caissa's Web, 2007.

3.g3 Nf6 4.Bb2 Bd6 5.Nf3–/+.

3.h3 Bd7 4.a4 a6 5.ba6 Ra6 6.a5 Nc6 7.g4 Ra5 8.Ra5 Na5 9.Bg2 e4 10.c3 c6 11.Qa4 Bd6 12.e3 Ne7 13.Ne2 Ng6 14.Ba3 Ba3 15.Na3 Nh4 16.0-0 Ng2 17.Kg2 0-0 18.Nc2 Nc4 19.Rd1 Qg5 20.Qb3 b5 21.Ncd4 h5 22.f3 ef3 23.Nf3 Nd2 24.Rd2 Qe3 25.Qc2 hg4 26.hg4 Bg4 27.Neg1 Re8 28.Kg3 Bf3 29.Nf3 Qg1 30.Ng1 1–0. banistyle (1950) – Maniacal_Menace (1925), lichess.org, 2020.

3.h4 Nd7 4.g4 Ngf6 5.f3 Bc5 6.h5 Bg1 7.Rg1 Nh5! 8.Rh1 (8.gh5 Qh4) 8...Ng3 9.Rh3 Nf1 10.Kf1 a6 11.ba6 Ra6 12.d4 Qf6 13.g5 Qe6 14.Rg3 c5 15.c3 Qd6 16.Kg2 e4 17.fe4 de4 18.Ba3 0-0 19.Nd2 (better is 19.Qb3–+) 19...Ra3 20.Ne4 (20.Nc4 Qa6 21.Na3 Qa3 22.Qc2–+) 20...Qf4 (better is 20...Qd5 21.Re3 Nb6 22.Qd3–+) 21.Nc5 Nc5 22.dc5 Bf5 23.Qd6 (23.Qd4 Be4 24.Kh2 Re8–+) 23...Be4 24.Kh3 (24.Kg1 Qh4 25.Qe5–+) 24...Qf2 25.Qd4 (25.Qe5 Bf5 26.Qf5 Qf5 27.Kh2–+) 25...Bf5 26.Rg4 Qd4 27.Kg3 Qg4 (27...Rc3 28.e3 Qg4 29.Kf2 Rc2 30.Kf1 Qf3 31.Ke1 Qe2) 28.Kf2 Re8 (28...Rc3 29.e4 Rc2 30.Kf1 Qf3 31.Ke1 Qe2) 29.Re1 (29.e3 Qh4 30.Kg2 Qh3 31.Kf2 Qe3 32.Kg2 Qh3 33.Kg1 Qg3 34.Kf1 Bh3) 29...Qh4 30.Kf1 (30.Kg2 Be4 31.Kf1 Qf4 32.Kg1 Qg3 33.Kf1 Qg2) 30...Bh3 31.Kg1 Qe1 (31...Qg5 32.Kh1 Qg2) 32.Kh2 Bg4 33.e4 (33.c6 Re2) 33...Ra2 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

3.Ba3 Bd6

4.c4 dc4!? 5.e3 Be6–/+.

4.c4 c6 5.cd5 cd5 6.Bd6 Qd6 7.Nc3 (7.d4 Nd7=) 7...Nf6 (7...d4 8.Ne4 Qd5 9.Rc1=+) 8.e3 (8.Rc1 Bg4=+) 8...b6 (8...d4 9.Nce2–/+) 9.Qb3 (9.d4 e4=) 9...Be6 (9...0-0 10.Nce2–/+) 10.Qa4 0-0 11.Nf3 (11.d4 Rc8 12.Rc1 Ne4=+) 11...Nbd7 12.d4 e4 (12...Rac8 13.Rc1=+) 13.Ng5 (13.Nd2 Rfc8 14.Rc1 Rc7=+) 13...Rac8 14.Ne6 fe6 15.Rc1 Rc7 16.Be2 Rfc8 17.0-0?? (better is 17.Qb3=+) 17...Rc3–+ 18.Rc3 Rc3 19.Qa7 Ra3 20.Qb7 Ra2 21.Qc8 (21.Bd1 Ra3–+) 21...Kf7 22.Bd1 Ra1 23.g4?? h6 24.g5 hg5 25.Bh5 Nh5 26.Ra1 Nhf6 27.Kg2 Ng4 28.Qh8 Ngf6 29.f4?? gf4–+ 30.Rg1 fe3 31.Kh1 Qf8 32.Qh3 Qg8 33.Qe3 Qh7 34.Rc1 Ng4 35.Rf1 Ndf6 36.Qg3 (36...Qh5 37.Kg1–+). pinecrest1981 – FedericoJones, Live Game Caissa's Web, 2005.

4.Bd6 Qd6 5.e3 c6 6.Nf3 Bd7 7.d4 ed4 (7...e4 8.bc6 Nc6 9.Nfd2=) 8.Nd4 (8.Qd4 Nf6=) 8...cb5 (8...Nf6 9.c4=) 9.Nb5 Bb5 10.Bb5 Nc6 11.Nc3 Qb4 (11...Nf6!?=) 12.Qd3 Nge7 13.0-0 Rd8 14.a4 a6 (14...0-0!?=) 15.Bc6+/– bc6 16.Ne2 Qa5 17.Rfb1 0-0 18.Nd4 Rb8 19.Nb3 Qb6 20.a5 Qb5 21.Qd1 Qc4 22.Qh5 (better is 22.Ra2=) 22...Qc2–+ 23.Qd1?? (better is 23.Qe5 Ng6 24.Qb2 Qb2 25.Rb2–+) 23...Qd1 24.Rd1 Rb3 (25.Rdb1 Rfb8 26.Rb3 Rb3–+) 0–1. QueenAmyitis – Raimondi, internet, 2005.

3.a4 a5

4.Bb2=+ d4 5.e4 (5.Nf3 f6=) 5...c6 (5...Nf6 6.Nf3=+) 6.Bc4 (6.Nf3 Bd6=) 6...Nd7 (6...Nf6 7.Nf3 Bd6 8.c3 Ne4 9.cd4 ed4 10.Qe2=) 7.Qf3 (7.Nf3 Ngf6=) 7...Ngf6 8.g4 (8.Qb3 Qe7 (8...Ne4?? 9.Bf7 Ke7 10.Qe6) 9.bc6 bc6=+) 8...g5 (8...Nb6 9.Be2–/+) 9.h4=+ Nb6 10.Bb3 Bg4 (10...h5 11.hg5 hg4 12.Qg2=+) 11.Qg3= Bh6?? (11...cb5 12.hg5 ba4+/–) 12.Qe5+– Qe7 13.Qd4 Nbd7+/– 14.f3 Bh5?? 15.hg5+– Bg5 16.Rh5! c5 17.Qc3 Bf4 18.Rf5 Be5 19.Re5 Ne5 20.Qe5 Qe5 21.Be5 Ke7 22.Bf6 Kf6 23.Nc3 Rhg8 24.0-0-0 Rg3 25.Nd5 Ke5 26.Ne3 Kf6 27.Bd5 Rb8 28.Nf5 Rg2 29.Nd6 (29...Rbg8 30.Bf7+–; 29.f4 Rbg8 30.Nh6 Rg1 31.e5 Ke7 32.Ng8 Rg8 33.Bb7 Rb8+–) 1–0. riverborne – active11, Live Game Caissa's Web, 2005.

4.Bb2=+ Bd6 5.Nf3 Nd7 6.e3=+.

4.e3 Nd7 5.Nf3 Ngf6 6.Be2 Bd6 7.0-0 e4 (7...c5 8.d3+=) 8.Nd4= h5 (8...0-0 9.Ba3=) 9.Nf5 Bh2 10.Kh2 Ne5 (better is 10...Ng4!? 11.Kg1 Qf6=) 11.Ng7+/– Kf8 12.Rh1 (12.Bb2 Neg4 13.Kg1 Kg7+/–) 12...Nfg4 (12...Kg7 13.Kg1+=) 13.Kg1 Qf6 Threatening mate... how? 14.f4 ef3 15.Bf3?? (better is 15.Nh5 f2 16.Kf1=) 15...Nf3–+ 16.Qf3 (16.gf3 Qg7 (16...Qa1?! 17.Nh5 Rg8 18.Kf1+=; 16...Kg7?! 17.Ra2=) 17.Bb2 Qb2–+) 16...Qa1 (16...Kg7?! 17.Nc3 Qf3 18.gf3+=) 17.Qd5 Qf6 Do you see the mate threat? (17...Qb1?! 18.Qd8 Kg7 19.Qg5 Kf8 20.Qd8 Kg7 21.Qg5 Kf8 22.Qd8 Kg7=; 17...Kg7? 18.Qg5 Kf8 19.Ba3 Qa3 20.Na3+–) 18.Ba3 (18.Qc5 Kg8 (18...Kg7?! 19.Bb2 Qb2 20.Qg5 Kf8 21.Qd8 Kg7 22.Qg5 Kf8 23.Qd8 Kg7 24.Qg5=) 19.e4 Qg7–+ (19...Kg7?! 20.Bb2 Qb2 21.Qg5 Kf8 22.Qd8 Kg7 23.Qg5 Kf8 24.Qd8 Kg7 25.Qg5=)) 18...Kg8 (18...Kg7?! 19.Bb2 Qb2 20.Qg5 Kf8 21.Qd8 Kg7 22.Qg5 Kf8 23.Qd8 Kg7 24.Qg5=) 19.Qf3 Kg7 20.Bc5 (20.Qf6 Nf6 (20...Kf6?! 21.Bb2 Ne5 22.Na3–+) 21.Bb2 Kg6–+) 20...Qf3 21.gf3 Ne5 22.f4 (22.Kf2 h4–+) 22...Ng4 (22...Nf3 23.Kg2 Bg4 24.Rf1–+) 23.Bd4 (23.Nc3 h4–+) 23...f6 24.e4 Bd7 25.Kf1 (25.d3 h4–+) 25...Kf7 (25...c6 26.c4 Be6 27.Na3 cb5 28.ab5–+) 26.Rh4 (26.d3 h4–+) 26...Rac8 (26...c6 27.Na3–+) 27.c4 (27.Nc3 c5 28.Bg1 f5–+) 27...c5 (27...Rcd8 28.Bc3–+) 28.Bc3 Rce8 29.d3 Ne3 30.Kf2 Nd1 31.Ke1 (31.Ke2 Bg4 32.Kd2 b6–+ (worse is 32...Nc3 33.Nc3 Reg8 34.Ke3–+)) 31...Nc3 32.Nc3 Reg8 33.f5 Rg4 34.Rh3 h4 35.Ne2 (35.Ke2 Rhg8–+) 35...Ke7 36.Kf2 Be8 37.Kf1 (37.Nc3 Bf7–+) 37...Bh5 38.Kf2 (38.Nc3 Rhg8 39.Rh2 Rg3–+) 38...Rg2 (better is 38...Rhg8!? 39.Kf1–+) 39.Kg2 Be2 40.Kf2 (40.b6 Kd6–+) 40...Bd1 41.Ke3 Ba4 42.d4 Bb3 43.Kd3 Kd6 44.Kc3 cd4 (better is 44...Ba2!? 45.b6–+) 45.Kb3 Ke5 (45...b6 46.Kc2–+) 46.c5 Kf4 (46...Ke4 47.c6 bc6 48.bc6–+) 47.Kc4 (47.c6 bc6 (47...Ke4?! 48.cb7 Rb8 49.Rh4 Ke5 50.Rh7+=) 48.bc6 Ke4–+) 47...Kg4 (47...Ke4 48.c6 bc6 49.bc6–+) 48.Ra3 (better is 48.Rh1 Rd8 49.Kd3–+) 48...h3 49.Ra5 (49.Ra1 h2 50.Rh1 Kf3 51.Kd4 Kg2–+) 49...h2 50.Ra1 h1Q 51.Rh1 Rh1 52.Kd4 Rd1 53.Kc4 (53.Ke3 Re1 54.Kd4 Kf4–+) 53...Kf4 54.c6 bc6 55.bc6 Ke4 (55...Ke4 56.Kb5 Kf5–+) 0–1. Norbeck,Ivar – Roos,Benny, corr SSKK 2–05, 1988.

4.e3 Nf6 5.Be2+=.

3.a4 b6

4.Bb2= d4 (4...f6 5.a5=) 5.c4 (5.Nf3 f6=) 5...c5=+ 6.e4 (6.e3 a6=+) 6...Nf6 7.f3 (7.Bd3 a6=+) 7...Bb7 (7...Be7 8.Bd3=+) 8.d3 (8.Na3 Be7–/+) 8...Be7–/+ 9.g4 (9.Be2 0-0–/+) 9...h6 (9...a6 10.Bg2–/+) 10.Bc1 (10.Bg2 Nbd7–/+) 10...g5 (10...a6 11.ba6 Na6 12.Be2–/+) 11.Bg2 a5 (11...a6 12.h4 gh4 13.f4=+) 12.h3 (12.Ne2 Kd7=) 12...Nbd7 13.Ne2 Qc7 14.Ng3 h5 (14...0-0-0 15.h4=) 15.Bg5 (15.Nf5 Rg8=) 15...hg4 (15...Ng4 16.hg4 Bg5 17.gh5=) 16.fg4 (better is 16.Nf5 gh3 A) 17.Ne7?? hg2 (17...Ke7?! 18.Rh3 Rh3 19.Bh3=+) 18.Rg1 Rh1–+; B) 17.Bh3=) 16...Nf8 (16...Ne4!? 17.Be4 Bg5=) 17.Rf1 (17.Qf3 Ng8 18.Be7 Ne7+/–) 17...N8h7 (17...Ne4 18.Ne4 Bg5 19.Ng5 Bg2 20.Rf7+/–) 18.Bf6 (18.Bh6 0-0-0+/–) 18...Bf6+= 19.Rf5 (19.Nf5 Bg5+=) 19...Bc8 (better is 19...Bh4!? 20.Kf2 Ng5–/+) 20.Rh5+= Bg7 (20...Be6 21.Qf3 Bg5 22.Nf5+=) 21.g5+/– Qd6 22.Bf3 Bd7 23.Bg4 0-0-0 24.Bd7 Rd7 25.Qg4 Qg6 26.Nf5 f6?? (27.Ne7 Kc7 28.Ng6 Rhd8 29.Rh7 fg5+–; better is 26...Kc7+/–). riverborne – clyde816, Caissa.com, 2004.

4.Nc3 Bb4 5.Bb2 c6 6.Ba3 Bc3 7.dc3 Nf6 8.c4 dc4 9.Qd8 Kd8 10.Rd1 Kc7 11.Bd6 Kb7 12.Be5 Bf5 13.e3 Bc2 14.Rc1 Ba4 15.Bc4 cb5 16.Bf6 bc4 17.Bg7 Rg8 18.Be5 Rg2 19.Rc4 Bc6 20.e4 Rg4 21.f3 Rg6 22.Ne2 Nd7 23.Bc3 Bb5 24.Rb4 Be2 25.Ke2 Nc5 26.e5 Rd8 27.Bd4 Ne6 28.Be3 Nc7 29.f4 Nd5 30.Rd4 Rc6 31.f5 Rc2 32.Kf3 Rc3 33.Re1 Kc7 34.Ke4 Kc6 35.e6 fe6 36.fe6 Rd6 37.Ke5 Re6 38.Ke6 Re3 39.Re3 Ne3 40.Rd7 a5 41.Rh7 a4 42.Rh3 Nc4 43.Rc3 b5 44.h4 a3 45.h5 a2 46.Rc1 b4 47.h6 b3 48.h7 b2 49.Rc4 Kb5 50.Rc8 a1Q 51.h8Q Qa2 52.Ke5 Qa5 53.Ra8 Qc7 54.Ke6 Qc6 55.Ke7 Qe4 56.Kd7 Qd5 57.Ke7 Qb7 58.Ke6 Qc6 ½–½. hamiltonharris (1845) – platao (1690), ChessWorld.net, 2015.

3.a4 c5

4.Bb2 Bd6 5.Nf3 d4 6.h4 h6 7.h5 Nf6 8.d3 0-0 9.Nbd2 Bg4 10.Nc4 Qc7 11.a5 Nbd7 12.a6 b6 13.Na5 ba5 14.c3 Bh5 15.c4 e4 16.Nd2 e3 17.Ne4 Ne4 18.de4 Bg3 19.Qd3 ef2 20.Kd1 Bf4 21.Rh5 Ne5 22.Qc2 Ng4 23.Bc1 Bc1 24.Qc1 Ne3 25.Kd2 Qf4 26.Kd3 Rfe8 27.e5 Re5 28.Re5 Qe5 29.Ra5 Qh2 30.Ra1 f5 31.b6 ab6 32.Qb1 Qd6 33.Qb5 f4 34.Rb1 Qg6 35.Kd2 Qc2 0–1. hamiltonharris (1875) – fastneal (1805), ChessWorld.net, 2015.

4.e3 Nf6 5.c4 (5.d4 ed4 6.ed4 Bd6+=) 5...d4 6.Qc2 Bd6 7.ed4 (7.e4 0-0+=) 7...ed4–/+ 8.d3 0-0 9.Bg5 (9.Nf3 Re8 10.Be2 Qe7–/+) 9...Bf5 (9...Re8 10.Be2–/+) 10.Nd2 h6 11.Bh4 Re8 12.Be2 Nbd7 13.f3 (13.a5 Qc7–/+) 13...Qc7 14.Nf1 (better is 14.Ne4–+) 14...Bd3?? (better is 14...a6–+) 15.Qd3+= Ne5 16.Qb3 (16.Qd2 d3 17.Bf6 de2 18.Ne2 gf6+=) 16...g5 17.Bf2 (17.f4 d3 18.fe5 Be5 19.Rd1 de2 20.Ne2 gh4 21.Ne3–/+) 17...d3+= 18.Ng3 Qa5 19.Kf1 de2 20.N1e2 Rad8 21.Rd1 (21.Nf5 Bf8+=) 21...Bf8 (better is 21...Nc4!? 22.Qc4 Bg3–/+) 22.Rd8+= Rd8 23.Be1 Qc7 (23...Qb6 24.Bc3 Nfd7 25.f4 gf4 26.Nf4+=) 24.Nc1 (24.Bc3!?=) 24...Qd6–/+ 25.Bc3 Qd1 26.Qd1 Rd1 27.Ke2 Rh1 28.Nh1 Nfd7 29.Ng3 (29.Be5 Ne5 30.Ng3 Nc4–/+) 29...Nc4 30.Kd3 Nd6 31.Ne4 f5 32.Nd6 Bd6 33.h3 (33.g3 Kf7–/+) 33...Kf7 34.a5 Ke6 35.Kc4 b6 36.a6 Be5 37.Be1 (37.Ne2 Bc3 38.Kc3 f4–+) 37...Nf6 38.g4 (38.Nd3 Ne8 39.Ne5 Nd6 40.Kb3 Ke5–+) 38...fg4 39.fg4 Ne8 40.Kb3 Kd5 (40...Nd6 41.Ka4 Kd5 42.Ne2–+) 41.Ka4 (41.Ne2 Nc7 42.Nc3 Kd4–+) 41...Kc4 42.Nb3 (42.Ne2 Nd6 43.Bg3 Bg3 44.Ng3 Nb5–+) 42...Nc7 (better is 42...Bf4 43.Ba5–+) 43.h4? (43.Nd2 Kd3–+) 43...Bf4 (43...gh4 44.Bh4 Bc3 45.Ka3–+) 44.hg5 (44.Bd2 Nb5 45.hg5 hg5 46.Bf4 gf4–+) 44...hg5 (44...Bg5?! 45.Nd2 Kd3 46.Bg3–+; 44...Nb5? 45.g6 Be5 46.Nd2 Kd5 47.Kb5+–) 45.Nd2 Kd3 46.Nb1 (46.Nf3 Nd5 47.Ng1 c4–+) 46...Nd5 47.Na3 c4 (47...c4 48.Nb1 c3 49.Nc3 Nc3 50.Bc3 Kc3–+) 0–1. Susanna – Crippa,Arturo, corr, 1964.

3.a4 Bd6

4.Bb2 Nf6 5.Nf3 Nbd7 6.d3 0-0 7.h4? (7.e3 e4 8.de4 de4-/+) 7...Qe7 (7...e4 8.Nd4 e3 9.Nf5 ef2 10.Kf2 Bc5 11.d4-+) 8.h5? (8.e3!?-/+) 8...h6 (8...e4 9.Nd4 e3 10.Qc1 ef2 11.Kf2 Ng4 12.Kg1-+) 9.Nc3 (better 9.e3-+) 9...Bb4 10.e3 (10.Nd2 Nc5 11.Na2-+) 10...d4 11.e4 (11.Be2 Nd5 12.Qc1 Nc3-+) 11...dc3 12.Bc1 a6 (12...Rd8 13.g3-+) 13.ba6 Ra6 14.d4 (14.Be2 Rd6-+) 14...Rd6 (better 14...Ra5 15.Bd3-+) 15.d5 (15.Bd3 Ne4! 16.Kf1 ed4 17.Be4 Qe4-+) 15...c6 (15...Ne4 16.Bc4 c6 17.0-0-+) 16.Bc4 (16.Nh4 Nc5 17.f3 Qc7-+) 16...cd5 (better 16...Ne4 17.0-0-+) 17.Bd5 (17.ed5 Nb6 18.Qe2 Nc4 19.Qc4 e4-+) 17...Nd5 18.ed5 e4 19.Nh4 (19.0-0 Nf6 20.Qe2 Rd5-+) 19...Nf6 20.Bf4 (20.Qe2 Rd5 21.g3 Rh5-+) 20...Rd5 21.Qe2 Bg4 22.f3 Rd2! 23.Qc4 (23.Bd2 cd2 Double attack (23...cd2 Passed pawn)) 23…ef3 (23...ef3 24.Kf1 fg2 25.Ng2 Be2 26.Kf2 Bc4 27.Bd2 Qe2 28.Kg1 cd2 29.Rh3 Bd5 30.Rf3 Bc5 31.Kh2 Qf3 32.Ne3 Ng4 33.Ng4 Qg2) 0-1. MISERYBOOMMAAA (1955) - Lance5500 (2395), lichess.org, 2019.

4.g4 Bg4 5.Bg2 e4 6.h3 Bh5 7.f3 Nf6 8.fe4 Bg3 9.Kf1 Ne4 10.Nf3 Bf3 11.ef3 Nf2 12.Ke2 Nd1 13.Kd1 0-0 14.d3 Qh4 15.Bd2 Nd7 16.Nc3 Ne5 17.Nd5 Bf4 18.Nc7 Bd2 19.Kd2 Qf2 20.Kc3 Rac8 21.Kb3 Rc7 22.Rac1 Qd2 23.c4 Qd3 24.Rc3 Qd2 25.Rg1 Nc4 26.Rc4 Qd3 27.Kb2 Rc4 28.Rc1 Qd2 29.Ka3 Qc1 30.Kb3 Qc3 31.Ka2 Ra4 32.Kb1 Ra1 0–1. banistyle (1945) – elv1zs (1885), lichess.org, 2020.

3.a4 Be6

4.Bb2 Bd6 5.e3 Nd7 6.Ba3 Ngf6 7.Nf3 0-0 8.Ng5 Qe7 9.Be2 Rfb8 10.0-0 Ba3 11.Ra3 d4 12.h3 de3 13.Re3 Nc5 14.c4 e4 15.Nc3 a6 16.f3 ef3 17.Bf3 ab5 18.cb5 h6 19.Nd5 hg5 20.Ne7 Kf8 21.Qc2 Ke7 22.Qc5 Ke8 23.Qc7 Kf8 24.Bb7 Nd5 25.Bd5 Bd5 26.Qd6 Kg8 27.Qd5 Ra4 28.Qf7 Kh8 29.Qh5 Kg8 30.Qg5 1–0. hamiltonharris (1795) – dakarportsmouth, ChessWorld.net, 2015.

4.Bb2 Bd6 5.Nf3 Qf6 6.e3=+.

4.Bb2 Nd7 5.g3 (5.Nf3 Bd6+=) 5...a6 (5...Bd6 6.Nf3–/+) 6.e3 (6.Nf3 Bd6+=) 6...ab5–/+ 7.ab5 Ra1 8.Ba1 Qa8 9.Bc3 h6 (9...Qa4 10.Nf3 Bg4 11.Be2–/+) 10.d4 (10.f4 ef4 11.gf4 Ngf6=) 10...e4–/+ 11.Qc1 (11.Ne2 Ngf6–/+) 11...Ngf6 12.Ne2 Be7 (12...Bd6 13.Nf4–/+) 13.Bg2 (13.Nf4 Bg4+=) 13...0-0 (13...Qa4 14.Qb2–/+) 14.0-0 (14.Nf4 Bf5–/+) 14...Nb6 Black gets the initiative 15.Nd2 Qa4 16.Qb2 Nc4 (16...Ba3 17.Qb3–/+) 17.Nc4+= Qc4 (17...dc4?? 18.Ra1 Ra8 19.Ra4 Ra4 20.Nf4+–) 18.Nf4 Plans Ra1 18...Ra8 19.Ne6 fe6 20.Bh3 Kf7 21.Re1 (21.Ra1 Ra1 22.Qa1 Qb5–/+) 21...Ra2 (21...Ra3 22.Bd2 Ra2 23.Qb1 Qc2 24.Qc2 Rc2 25.Rd1–+) 22.Qb3 Qb3 23.cb3 Rc2 24.Ba1 Ne8 (24...Bb4 25.Rb1–+) 25.Bf1 Nd6 26.Be2 (26.Kg2 Ra2–/+) 26...Nf5 27.Bd1 Rc1?? (better is 27...Rd2–/+) 28.Bh5+– g6 29.Bg6! Kg6 30.Rc1 Bd8 31.Bc3 (31.Kg2 Nd6+–) 31...Nd6 32.b6 (32.Ba5 Nb5 33.Kg2 b6+–) 32...c6 33.Ra1 (33.Ba5 Kf5+–) 33...Nb5+/– 34.Ra8 Bb6 35.Ba5 Ba7 (35...Ba5 36.Ra5 Kf6 37.Ra8+/–) 36.Kg2 (36.Bb4 Bd4 37.ed4 Nd4 38.Rg8 Kf6+–) 36...Kf6 (36...b6 37.Bb4 c5 38.dc5 bc5 39.Bc5 Bc5 40.Ra5+–) 37.h4 (37.Bc7 Bd4 38.Bd8 Kf5 39.ed4 Nd4+–) 37...e5 (37...b6 38.Bb4 c5 39.dc5 bc5 40.Bc5 Bc5 41.Ra5+–) 38.de5 Ke5 39.Kh3 (39.Rh8 Kf6 40.Rh6 Kg7+–) 39...c5 Black plans d4 (39...Kf6!?+/–) 40.Rh8 (40.Re8 Kd6+–) 40...d4 (40...b6 41.Bd2 c4 42.bc4 dc4 43.Bb4+–) 41.ed4 cd4 42.Rh6 d3? (42...Kd5+–) 43.Rh5 Kd6 (43...Ke6 44.Rb5 Bf2 45.Rb7+–) 44.Rb5 Bf2 45.Kg2 e3 (45...Bc5 46.Bb4 Bb4 47.Rb4 Kd5+–) 46.Kf1 (better is 46.Bb4 Ke6 47.Rb6 Ke5 48.Bc3 Kd5 49.Rb4+–) 46...Bg3 47.Bb4 (47.h5 e2 48.Kg2 e1Q 49.Be1 Be1+–) 47...Kc6 48.Rc5 Kb6 49.Rc1 (49.Rd5 e2 50.Kg2 e1Q 51.Be1 Be1+–) 49...Kb5 (49...e2 50.Kg2 Bh4 51.Rh1+–) 50.Bc3 (50.Rc4!? e2 51.Kg2+–) 50...Bh4+/– 51.Kg2 (better is 51.Ra1 e2 52.Kg2+/–) 51...Bf6+= 52.Kf3 (52.Bf6 Deflection from d2 52...d2) 52...d2 53.Bd2 (53.Rb1 Bc3 54.Ke3 Kb4=) 53...ed2+= 54.Rd1 Bc3 55.Ke2 Kb4 56.Rb1 Ka3 57.Kd1 Bb2 (57...b5 58.Kc2 b4 59.Rd1=) 58.Kc2+= b6 (58...b5 59.Rf1=) 59.Rh1 Bc1 (59...b5 60.Rh5 d1Q 61.Kd1 Kb3 62.Rb5 Kc3 63.Ke2+=) 60.Rh3 (60.Rh4 b5+/–) 60...Kb4 61.Rh4 Kc5 62.Rh8 (62.Rc4 Kb5+=) 62...Kb5 (62...Kb4 63.Rf8=) 63.Rc8 Kb4 64.Rc4 Kb5 (64...Ka5 65.Ra4 Kb5 66.Kd1+=) 65.Kd1 Ka5 66.Rd4 Kb5 67.Ra4 (67.Rg4 Kc5+=) 67...Kc5 68.Kc2 Kb5 69.Rg4 Kc5 70.Rg1 (70.Kd1 Kb5+=) 70...Kb5 (70...b5 71.Rg4+=) 71.Kc3 (71.Rg6 Kc5+=) 71...Ka6 72.Kc4 (72.Rf1 Ka5=) 72...b5 (72...Ka5 73.Rd1=) 73.Kc5 (better is 73.Kc3+=) 73...Ba3 (better is 73...Ka5=) 74.b4+– Bb2 75.Rb1?? (75.Rg6 Kb7 76.Rd6 Bc1+/–) 75...Kb7 (better is 75...Bc1 76.Kc6 Ka7–+) 76.Rd1+– (76.Kb5?? Bc1 77.Rb3 d1Q–+) 76...Bc1 77.Kb5 Ka7?? (better is 77...Kc8+–) 78.Kc6 Ba3 79.Rd2 Ka8 80.b5 (80.Kb6 Bb4 81.Rd8) 80...Bb4 81.Rg2 Ba5 82.b6 (82.b6 Bb6 83.Kb6 Kb8 84.Rg8) 1–0. Rey Hermida,JJ – Arias Duran,Jorge (2030), Ibercaja op Zaragoza, 1997.

4.e3 Nf6 5.Nf3 Bd6 6.Ba3 0-0 7.Be2 c5 8.Ng5 (8.d4 e4 9.Ng5 Nbd7+=) 8...Bf5–/+ 9.0-0 Qc7 10.g4 (10.Bb2 Nbd7–/+) 10...Be6 (10...Bg6 11.Bb2–/+) 11.f3 (11.Ne6 fe6 12.g5 Ne8+=) 11...Nbd7 (11...Bd7 12.Bb2–/+) 12.d3 (12.Bb2 c4+=) 12...h6 (12...d4 13.Ne6 fe6 14.e4–/+) 13.Ne6+= fe6 14.c4 e4 (better is 14...Rad8+=) 15.Kg2? (better is 15.f4!?+=) 15...ef3–/+ (worse is 15...Bh2 16.f4 ed3 17.Qd3+=) 16.Rf3 dc4 (16...Bh2 17.a5 Bd6–+) 17.Rh3? (better is 17.d4 cd4 18.Bd6 Qd6 19.Bc4–/+) 17...cd3–+ 18.Qd3 Ne5 19.Qd1 (19.Qb3 Qf7 20.Nd2 Nfg4–+) 19...Ne4 20.Nd2 (20.Rh5 Rf2 21.Kh1 Qf7–+) 20...Rf2 (better is 20...Nf2!? 21.Qc2 Nh3 22.Kh3–+) 21.Kg1 Nc3 22.Kf2 Nd1 23.Bd1?! (23.Rd1 Qa5 24.Ne4 Qa4 25.Nd6 Rf8 26.Kg1 Qa3 27.Rg3–+) 23...Rf8 24.Ke1 (24.Kg1 Qf7 25.Bf3 Ng4–+) 24...Qf7 (better is 24...Nd3!? 25.Ke2 c4 26.Nf3 Ba3 27.Ra3 Nc1 28.Kf2–+) 25.Bf3 Nf3 (25...Qf6 26.Rc1 Nd3 27.Ke2 Nc1 28.Bc1–+) 26.Rf3 Qg6 27.Rf8 Kf8 28.Rc1 Qg4 29.Nc4 (29.Rc4 Qh3 30.Nf1 b6–+) 29...Qg1 30.Kd2 Qh2 31.Kd3 Be7 (31...g5 32.Rc2 Qg3 33.Nd6 Qd6 34.Ke2–+) 32.Rc2 (32.a5 Qa2 33.b6 ab6 34.ab6 g5–+) 32...Qg3 (32...Qh5 33.Bb2–+) 33.a5 h5 34.Re2 (34.Bb2 g5–+) 34...h4 35.Bb2 Bf6 36.Bf6 gf6 37.Nd2 f5 38.Nf1 (38.Nb3 Qe5 39.Nd2 Qb2–+) 38...Qf3 (38...Qd6 39.Kc2 Qd5 40.Nd2 Qa2 41.Kc1 Qa3 42.Kc2–+) 39.Nh2 (39.Nd2 Qd5 40.Kc3 Qa2–+) 39...c4! 40.Kd2 (40.Kc4 Theme: Deflection from e2 40...Qe2 A double attack) 40...Qd5 41.Kc1 Qd3 42.Rc2 (42.Rd2 Qe3 43.Kc2 Qb3 44.Kc1 Qb5–+) 42...c3 43.a6 b6 (43...b6 44.e4 Qe4 45.Rc3 Qh1 46.Kc2 Qh2 47.Kb3 Qe5–+) 0–1. Norbeck,Ivar – Adolfsson,Leif, corr SSKK 2–05, 1988.

3.a4 f5

4.Bb2 Bd6 5.Nf3 Qe7 6.d4 e4 7.Ne5 Nd7 8.Nd7 Bd7 9.e3 Nf6 10.Nd2 (10.c4 dc4 11.Bc4 Be6 12.Be6 Qe6=+) 10...0-0 (10...Ng4 11.c4 f4 12.ef4-+) 11.Be2 c6 12.c4 c5 (12...f4 13.0-0=+) 13.Qb3 dc4 14.Bc4 Kh8 15.dc5 Bc5 16.Rd1 Ng4 17.h3 Ne5 18.Be2 (18.Be5!? Qe5 19.Bd5=) 18...Be6=+ 19.Nc4 Rac8 (better 19...Nc4 20.Bc4 Bc4 21.Qc4 f4-/+) 20.Qc2?? (better 20.Be5 Bc4 21.Bg7 Qg7 22.Bc4 Qg2 23.Qc3 Qg7 24.Qg7 Kg7 25.Ke2=) 20...Bb4-+ 21.Kf1 (21.Bc3 Bc4 22.Bb4 Qb4 23.Qd2 Qa4-+) 21...Nc4 22.Qb1 Nd2 23.Kg1 (23.Rd2 Bd2 24.g3-+) 23...Nb1 24.Rb1 0-1. LonesomeGeorge (1915) - jodelda (1995), Rated Bullet game, lichess.org, 2013.

4.e3 Nf6 5.f4 (5.d4 ed4 6.Qd4 Be6=+) 5...e4 (5...ef4 6.ef4 Bd6 7.d4–/+) 6.Bb2 Bc5 7.c4 (7.Ne2 0-0=+) 7...c6 (7...0-0 8.cd5 Nd5 9.Qc2 Qh4 10.g3–/+) 8.Na3 (8.bc6 bc6 9.cd5 cd5 10.Bf6 Qf6=+) 8...0-0 9.Nc2 (9.Ne2 a6=+) 9...Be6–/+ 10.Ne2 (10.Qc1 cb5 11.cb5 Nbd7–/+) 10...dc4 11.Ned4 Qd7 12.Ne6 Qe6 13.Nd4 Bd4 14.Bd4 Nbd7 (14...cb5 15.ab5 Rc8 16.Qa4=+) 15.Rc1 (15.bc6 bc6 16.Qc2=) 15...c5 (15...cb5!? 16.ab5 Rfc8=+) 16.Bc4= Qc4?? (better is 16...Nd5 17.Qb3 N7b6 (17...cd4?? 18.Bd5 Qf7 19.Rc7+–) 18.Bd5 Nd5 19.Bc5 Rfc8=) 17.Rc4+– cd4 18.Qb3 Kh8 19.Rd4 Nc5 20.Qa3 Nd3 21.Rd3 ed3 22.Qd3 Ne4 23.Qe2 Rad8 24.h3?? Ng3 25.Qf3+– Nh1 26.g4 fg4 27.hg4 Rd3 28.Qh1 Rfd8 29.Qb7 Rd2 30.Qa7 Ra2 31.b6 h6 32.b7 Rb2 33.Qa8 Rg8 34.a5 Kh7 35.a6 1–0. phoenixd (1955) – dyddulikthat, net–chess.com, 2004.

3.Bb2 Be6

4.Be5+= Nd7 5.Bb2 Ngf6 6.e3 c5 7.Nf3 Qa5 8.Ng5 Bg4 9.Be2 Be2 10.Qe2 Be7 (10...Qa4 11.Kd1 Bd6 12.Nc3+=) 11.0-0 (11.e4 de4 12.Nc3 0-0+=) 11...Qb4 12.Ba3 Qh4 (12...Qg4 13.Qg4 Ng4 14.Nf3+=) 13.Nf3 Qh5 14.d4 0-0 15.dc5 Bc5 16.Bc5 Nc5 17.Rd1 Rac8 18.Nd4 Qe5 (18...Qe2 19.Ne2 Na4 20.Na3+/–) 19.Nd2 Rfe8 20.N2f3 Qc7 21.a4 Nce4 22.Qd3 Ng4 23.Rf1 Qd6 24.Qa3 Qg6 (24...Qc7 25.h3 Ne5 26.Ne5 Qe5 27.Qb4+/–) 25.a5 Rc3 26.Qb2 Qd6 (26...a6 27.h3 Ngf6 28.Rfd1+/–) 27.a6 b6 28.h3 Ngf6 29.Rfd1 Rc5 30.Rd3 Qd7 31.Nd2 Nd2 32.Rd2 Ne4 33.Rd3 Rec8 34.Ra4 R8c7 35.Rb4 Nc3 (35...Qc8 36.Qa1+/–) 36.Rb3 Ne4 37.Nc6 Nd6 38.Rdc3 Nc4 39.Qa1 f6 (39...Nd2 40.Rb4+/–) 40.Qd1 Qe8 41.Qd4 Kf7 42.Qf4 Rd7 43.Qb8 (43.Qg4 Kg8+/–) 43...Qb8 44.Nb8 Rdc7 45.Nc6 Kg6 (45...Rd7 46.Rb1+/–) 46.Nd4 Nd6 47.Rc5 Rc5 48.Kf1 h5 49.g4 (49.Ke2 h4+/–) 49...hg4 (49...Ne4 50.Ke2+/–) 50.hg4+– Rc8 51.Ke2 Kg5 (51...Kf7 52.f3+–) 52.f3 1–0. Van Rooijen,Peter (1655) – Ondo,Bob (1935), IECC, 2003.

4.Be5 Nd7 5.Bb2 Nh6 6.e3 Nf5 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Nf6 10.Ng5 h6 (10...Ng4 A) 11.Ne6? Bh2 12.Kh1 Nf2 13.Kh2 Qh4 14.Kg1 Nd1 15.Nf8 Nfe3 (15...Nb2?! 16.Rf5 Qe1 17.Bf1 Rf8 18.Rd5-+) 16.de3 Nb2-+; B) 11.f4 Qg5 12.Bg4+= (12.fg5?? Bh2 13.Kh1 Ng3)) 11.Ne6+/- fe6 12.c4 1-0. DEFFM – gullepove, freechess.org, 2021.

4.Be5 f6 5.Bb2 Bd6 6.e3 a6 7.Qh5 Bf7 8.Qg4 ab5?? (better 8...Kf8 9.Nc3 Nh6+=) 9.Qg7+- Bf8 (9...Bg6 10.Nf3 Nd7 11.Qh8+-) 10.Qh8 Bh6 (10...b4 11.Nf3+-) 11.Bb5 Nc6 12.Qh7 Bg6 (12...Qe7+-) 13.Qg8 Ke7 14.Qg6 (14.Qg6 Qf8 15.Nc3+-) 1-0. DEFFM – amnuay, freechess.org, 2021.

4.Be5 Nf6 5.c4 dc4=+ 6.e3 Bb4 (6...Nbd7 7.Bd4=+) 7.Nf3 0-0 (7...Nbd7 8.Qc2=) 8.a3 (8.Qa4 Nd5 9.Bc4 Nd7+=) 8...Ba5 (8...Bd6 9.Qc2 Be5 10.Ne5=) 9.Nc3 (9.Qa4!? c6 10.Bc4 cb5 11.Qb5 Bc4 12.Qc4+=) 9...Nbd7 10.Bg3 (10.Qa4 Bc3 11.Bc3 Nc5=+) 10...Nc5 11.Qc2 Nd3 (11...a6 12.ba6 Nd3 13.Bd3 cd3 14.Qb2 ba6 15.Bh4=+) 12.Bd3 cd3 13.Qb2 Bg4 14.0-0 (14.Ne5 Re8=+) 14...Bf3 15.gf3 Qd7 16.Kg2 Rfe8 17.Rac1 h5 (17...a6 18.Rg1=+) 18.h4 (18.Rg1 Rac8=+) 18...Qf5 19.Na2 (19.Rg1=+) 19...g5 (better 19...Nd5!?-/+) 20.hg5= Qg5 (20...Nd5 21.f4=) 21.Rg1+= h4? (better 21...Kh7+=) 22.Kf1+- Qf5? (22...hg3 23.Rg3 Qg3 24.fg3+-) 23.Bc7 (23.Bh4 Kh7 24.Qf6 Qf6 25.Bf6 Rg8+-) 23...Kf8? (better 23...Kh7 24.Qb3 Rg8+-) 24.Ba5 Qf3 (24...Rec8 25.Bc3 Nd5 26.e4 Qh3 27.Ke1+-) 25.Qb4 Re7 26.Qh4 Ne4 (26...Re4 27.Qh2 Ng4 28.Qd6 Ke8+-) 27.Qh8 1-0. ClayPigeons (2155) - Dedmarshal (2180), Rated Bullet game, lichess.org, 2020.

3.Bb2 Ne7

4.e3 Be6 5.Nf3 Nd7 6.Ne5 g6 7.Nd7 f6 8.Nf6 Kf7 9.Nd5 Qd5 10.Bh8 Bg7 11.Nc3 Qe5 12.Bg7 Qg7 13.Be2 Nf5 14.Bg4 Rd8 15.0-0 Bc4 16.Re1 Ne3 17.fe3 Bb5 18.Nb5 Qa1 19.Qa1 Rd2 20.Nc7 Rc2 21.Nd5 h5 22.Qf6 Kg8 23.Qg6 Kh8 24.Qh5 Kg7 25.Qg5 Kf8 26.Qe7 Kg8 27.Be6 Kh8 28.Nf6 Rg2 29.Kg2 1–0. axtur777 – Venj, lichess.org, 2019.

4.Be5 f6 (4...Nd7 5.Bb2+=) 5.Bb2 c6 (5...Bf5 6.Nf3+=) 6.a4 (6.e3 Ng6+/–) 6...cb5 (6...Ng6 7.e3+=) 7.ab5+/– b6 (7...Be6!?+/–) 8.e3+– Ng6 (8...Be6 9.Nc3+–) 9.c4 (better is 9.Bd3+–) 9...dc4?? (9...Be6 10.cd5 Bd5 11.Nc3+/–) 10.Bc4 (better is 10.Qf3!? Nc6 11.Qc6 Bd7 12.Qe4 Ne7 13.Bc4 Bf5+–) 10...Ne5? (better is 10...Bb7 11.Nf3 Qc8+–) 11.Be5+– fe5 12.Qh5 g6 13.Qe5 Kd7 14.Qh8 Bb7 15.Qh7 Be7 16.Qg6 a5 17.Nf3 Kc8 18.Nc3 Nd7 19.Nd5 Bc5 20.Rc1 Nf8 21.Qf5 Nd7 22.Bb3 a4 23.Ba2 Qf8 24.Qf8 Nf8 25.d4 Nd7 26.dc5 bc5 27.Ke2 a3 28.Rhd1 Ra4 29.Nc3 Rg4 30.Be6 (30...Bf3 31.Kf3+–) 1–0. pumpkin (2330) – sagewildchild (1610), net–chess.com, 2007.

3.Bb2 Bf5

4.e3 Nf6 5.c4 Bb4 6.Nf3 e4 7.Nd4 Bg4 8.Be2 0-0 9.f3 ef3 10.Nf3 Ne4 11.0-0 c6 12.d3 Nc5 13.Nd4 Qg5 14.Rf4 Bh3 15.Bf3 Ne6 16.Ne6 fe6 17.Rf8 Kf8 18.Qe2 Nd7 19.Nc3 Ne5 20.e4 de4 21.Ne4 Qg6 22.Be5 Bf5 23.Rf1 Kg8 0–1. axtur777 – bchkanth, lichess.org, 2019.

4.Be5 f6 5.Bb2+= c6 (5...Bc5 6.d4 Bb6 7.Nf3+=) 6.a4 (6.Nf3 Nh6+/–) 6...Qa5 (6...Bd6!?=) 7.e3 Qa4?? (better is 7...Bd6+/–) 8.Ra4+– cb5 9.Bb5 Kf7 10.Qh5 g6 11.Qf3 Bc2 12.Qd5 Kg7 13.Qb7 Kh6 14.Rh4 Kg5 15.Nf3 Kf5 16.Qd5 1–0. DEFFM – GuestZMVB, freechess.org, 2018.

3.Bb2 f6

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

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

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

4.d4 e4 5.c4 dc4 6.e3 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.c4 dc4).

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

4.e3 c5 5.Qh5 (---> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c5 5.Qh5).

4.e3 c6 5.a4 Be6 6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 c6 6.a4).

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

4.e3 Be6 5.d4 Bd6 6.Nd2 e4 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 e4 6.Nd2 Bd6).

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

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

4.e3 Be6 5.Nf3 Bd6 6.c4 Ne7 7.d4 e4 8.Nfd2 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Bd6 6.d4 e4 7.Nfd2 Ne7 8.c4).

4.e3 Be6 5.Nf3 Nd7 6.d4 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.d4 Nd7 6.Nf3).

4.e3 Nh6 5.Nf3 Be6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 Nh6).

3.Bb2 Nf6

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

4.e3 Bd6 (--> 3.Bb2 Bd6 4.e3 Nf6).

4.Be5 (--> 1.b4 e5 2.Bb2 d5 3.Be5 Nf6 4.b5).

3.b6 ab6–/+

4.a4 c6 (4...Nf6 5.e3-+) 5.Ba3 Ba3 6.Ra3 Be6 7.Rg3 (7.Nf3 Qd6-/+) 7...Qf6 8.e3 (8.Nc3 Nd7-+) 8...Ne7 (8...Ra4 9.Nc3 Ra5 10.Be2-+) 9.Bd3 (9.Nc3 Nd7-+) 9...0-0 (better 9...Ra4 10.Nc3 Ra8-+) 10.Nf3? (better 10.Nc3-+) 10...e4 (10...Ra4?! 11.Nc3 Ra8 12.Be2-+) 11.Nd4 (11.Be4 de4 12.Ng5 Nf5-+) 11...ed3 12.cd3 Nf5 13.0-0 (13.Nf5 Bf5 14.Qb3 Nd7-+) 13...Ng3 14.hg3 (14.fg3 Qg6 15.Ne6 Qe6-+) 14...Nd7 15.Nc3 c5 (15...Nc5 16.Qb1-+) 16.Ne6 Qe6 17.Nb5 Qc6 18.Qg4 Nf6 19.Qh4 d4! 20.f3 (20.ed4 Ra4 Decoy (20...Ra4 Interception)) 20...Ra4 21.ed4 (21.Rb1 Rfa8 22.g4 R8a5-+) 21...Qb5 22.Kf2 Rd4 23.Rh1 Rh4 24.Rh4 Qd3 25.Rd4 Qd4 26.Kf1 (26.Ke1 Re8 27.Kd1 Qa4 28.Kc1 Qa2 29.d4 Re1) 26...Rd8 (26...Re8 27.f4 Ng4 28.f5 Qf2) 27.Ke2 (27.d3 Re8 28.f4 Qe3 29.d4 Qe1) 27...Qd2 28.Kf1 Ra8 (28...Qe3 29.g4 Rd1) 29.Kg1 Ra2 30.Kh2 Qg2 0-1. BangBangBangDrama (2005) - gieka20 (2010), Rated Blitz game, 2020.

4.Bb2 d4–/+.

4.Nc3 d4–+ 5.Nb5 (better is 5.Ne4–+) 5...c5?? (better is 5...c6–+) 6.d3 (6.e3 Be6–/+) 6...Be6 7.c4 Nc6 8.Nf3 Nf6 9.e4 Bg4 10.h3 Bd7 11.g4 Be6 12.Rg1 Be7 13.g5 Nd7 14.h4 Nb4 15.h5 Na2?? 16.Bd2?? Nc3?? 17.Nc3?? Ra1 18.Qa1 dc3 19.Bc3 f6 20.h6 g6 21.Ne5?? fe5–+ 22.Be5 Rf8 23.Bh2 Bg5 24.d4 Bh4 25.Bg3 Bg5 26.d5 Bf6 27.Qd1?? Bc3–+ 28.Ke2 Bg4 29.Kd3 Bd1 30.Kc3 Qf6 31.Kd2 Qd4 32.Bd3 Rf3 33.Kd1 Qd3 34.Kc1 Qc4 35.Kb1 Qe4 36.Kc1 Rc3 37.Kb2 Qb4 38.Ka1 Ra3 0–1. Jolilein – Antaeus, mySchach.de, 2005.

4.e3 Nf6 5.h3 Nc6 6.Bb5 Bd7 7.c3 Ne7 8.Qe2 Ra5 9.Bd7 Qd7 10.Nf3 Ng6 11.a4 (11.d3 e4 12.de4 de4–+) 11...Ra4 12.Ra4 Qa4 13.0-0 (13.d3 Bd6–+) 13...Bd6 (13...Qb3 14.Qd3 Bd6 15.Qf5–+) 14.g3 (14.d3 0-0–+) 14...h6 (14...Qb3 15.Qd3–+) 15.g4 (15.d3 0-0–+) 15...e4 (15...Qe4!? 16.d3 Nf4 17.de4 Ne2 18.Kg2 Nc1 19.Rc1 de4 20.Nh4–+) 16.Nd4 Nh4 17.Nf5 (17.f4–+) 17...Nf5 18.gf5 0-0 (18...Qb3 19.d4 Qb1 20.Bb2–+) 19.Kh1 (19.c4 Qd7 20.Bb2 Qf5 21.Bf6 Qf6 22.cd5 Qg5 23.Qg4 Qd5–+) 19...Qd7 (19...Qb3!? 20.d4 Qb1 21.Ba3–+) 20.Na3 (20.Ba3 c5–+) 20...Qf5 21.f4 ef3 (better is 21...Qh3 22.Kg1–+) 22.Rf3 Qe5 23.Qg2 Nh7 (better is 23...Ra8 24.Nb5–+) 24.Nb1 (24.Nb5 Ng5 25.Rf1 Ne4–+) 24...Ng5 (24...Qe4 25.Na3 Qa4 26.Rf1 Ba3 27.Ba3 Qa3 28.Qd5–+) 25.Rf2 (25.Rf1 Ra8–+) 25...Ne4 26.Rf4 g5 27.Rg4 f6 28.Kg1 h5 29.Rh4 Qg3 30.Qg3 Ng3 31.Ra4 Ne2 32.Kf2 Nc1 33.d4 h4 34.Kf3 b5 35.Ra5 b4 36.Rd5 bc3 37.Nc3 Nd3 38.Kg4 Kg7 39.Kh5 Nf2 40.Nb5 Rh8 0–1. karlsdad – groovenetwork, ChessWorld.net, 2012.

3.d3 Qf6

4.a4 Bg4 5.f3 Be6 6.Bd2 (6.e4 Bc5–/+) 6...e4 7.c3 ed3 (7...a6 8.ba6 Na6 9.Be3–/+) 8.e3 (better is 8.ed3!? Nd7 9.Ne2=+) 8...Bf5 9.h4 (better is 9.Bc1 Bd6 10.g3–+) 9...Bd6 10.f4 Qe6 11.g3 (11.Nh3 Nd7–+) 11...Bc5 12.Bh3 Bh3 13.Nh3 Be3 14.Kf1 Bc5 15.Qe1 (15.Kg2 Qe4 16.Kh2 Ne7–+) 15...Qe4 (15...Qe1 16.Be1 a6 17.ba6 Ra6 18.Nd2–+) 16.Qe4 de4 17.c4 e3 18.Bc3 Nf6 19.Bf6 gf6 20.Ra2 Rg8 21.Kg2 Nd7 22.Re1 0-0-0 23.Kf3 Nb6 24.Ng1 d2 25.Nd2 ed2 26.Rd1 Rd3 27.Ke2 Rdg3 28.Nf3 Re8 29.Ne5 fe5 30.Rdd2 Nc4 31.Rdc2 ef4 32.Kd1 Rg1 0–1. RayRay – Caissa, Live Game Caissa's Web, 2004.

4.Bb2 d4 5.c3 dc3 (5...Qb6 6.cd4 Bb4 7.Nd2 ed4 8.Ngf3=+) 6.Nc3= Bb4 7.Nf3 Bc3 (7...Be6 8.a3 Bc5 9.Ne4+–) 8.Bc3+= Nd7 9.e3 b6 (9...Ne7 10.d4 e4 11.Nd2+=) 10.a4 (10.d4 e4 11.Qc2 Qg6+/–) 10...Bb7 11.Be2 Ne7 12.0-0 (12.d4 e4 13.Ne5 Ne5 14.de5 Qg6+=) 12...0-0 (12...c5 13.a5+=) 13.Re1 (13.d4!? e4 14.Ne5+/–) 13...Nd5 14.Rc1 Qe6 (14...Nc3 15.Rc3 c5 16.bc6 Bc6 17.d4=) 15.Qd2 (15.Bb2 c5+=) 15...f6 16.Bb4 (16.e4 Nc3 17.Qc3 Rac8+=) 16...Nb4 17.Qb4 c5 18.bc6 Bc6 19.e4 a5=+ 20.Qa3 g5 21.Nd2 b5 22.ab5 Bb5+= 23.Rb1 Qc6?? 24.Rec1+– Qb6 25.Nc4 Qa6+/– 26.Nd6 Rfb8? 27.Nf5 Kf7?? 28.Qe7 Kg6 29.Qg7 1–0. Long_Knights – andre2004, ChessWorld.net, 2005.

4.Bb2 d4 5.Nf3 h6 6.Nbd2 Qb6 7.a4 Bg4 8.Ne5 Be6 9.Ndf3 a6 10.Bd4 Qa5 11.Bc3 Qc3 0–1. A_VB (1630) – parsa15 (1620), lichess.org, 2018.

4.e4 a6=+.

4.g4 Bg4 (5.Be3 Bd7–+) 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

3.e3 Bb4

4.a3 Ba5 5.Bb2 d4 (5...Nd7 6.Nf3=) 6.ed4 ed4 7.Bd3 Nf6 8.Nf3 Bg4 (better is 8...0-0!? 9.0-0 c5=) 9.Qe2+/– Be6 (9...Qe7!? 10.Qe7 Ke7 11.Nd4 Nbd7+/–) 10.Nd4+– Qe7 11.Ne6 fe6 12.Nc3 0-0 13.Qf3 (better is 13.0-0+–) 13...Nd5? (13...Nbd7 14.Ne4+/–) 14.Qh3 (better is 14.Qe4 Kf7 15.Qh7+–) 14...h6 15.Nd5 ed5 16.Qe3 Re8 17.Qe7 (better is 17.0-0-0!?+–) 17...Re7+= 18.Kd1 Nd7 19.Re1 Re1 20.Ke1 Nc5 21.Bf5 Re8 22.Kd1 Rf8 23.Bd4 Rf5 24.Bc5 b6 (better is 24...Bb6 25.Bb6 ab6+/–) 25.Be7?? (better is 25.Bd4+–) 25...Rf2–+ 26.Bh4?! (26.Ke1 Rd2 27.Kf1–+) 26...Rd2 27.Kc1 Rg2 28.Bg3 Bc3 (28...Bc3 29.Kb1 Rg1 30.Ka2 Ra1 31.Kb3 Bf6 32.Bc7 Rb1 33.Ka4 Rb2–+) 0–1. smoothoperator (2125) – eweram (1925), net–chess.com, 2015.

4.Bb2 Qd6 5.c4 (5.f4 Nd7 (< 5...ef4 6.Bg7 fe3 7.Bh8+–) 6.a3 Ba5+=) 5...Be6 (5...Nf6 6.a3 Ba5 7.cd5 Nd5 8.Nf3=) 6.cd5 (6.f4 dc4 (6...ef4? 7.Bg7 fe3 8.Bh8+–) 7.Be5 Qf8+=) 6...Bd5 (6...Qd5 7.Qa4 Be7 8.b6 Nc6 9.bc7=) 7.Nc3 (7.f4 Nd7 (7...ef4? 8.Bg7 fe3 9.Bh8+–) 8.a3 Ba5=) 7...Nf6 (7...Bc3 8.Bc3 Nf6 9.f3=) 8.Nd5 Qd5 (8...Nd5 9.a3 Ba5 10.Nf3+=) 9.Rc1 Ne4 (9...Bd6!? 10.Nf3 e4=) 10.Nf3+/– 0-0 (10...Nd7 11.Rc7 Nec5 12.b6=) 11.Bc4 Qd7 (11...Qd8 12.a3 Be7 13.Ne5+–) 12.Be5 (better is 12.Qc2!? Qg4 13.0-0+– (13.Be5 Qg2 14.Qe4 Qh1 15.Bf1 Nd7 16.Bg7 Kg7 17.Qg4 Kh8 18.Qd7 Qf3 19.Qd4 f6 20.Qb4 Rf7=+; < 13.Ne5 Qg2 14.Ke2 Qf2 15.Kd1 Qd2 16.Qd2 Bd2–/+)) 12...Rd8 (12...Re8 13.Rc2 a6 14.ba6+/–) 13.Rc2 (13.0-0 Nd2 14.Nd2 Bd2+–) 13...c6 14.Qe2 (14.Bd4 c5 15.Bb2 Nd6+/–) 14...a6 (14...Qf5 15.g4 Qd7+/– (15...Qg4? 16.Rg1 Nd2 17.Bf7 Kf7 18.Rg4 Nf3 19.Kf1 Ne5 20.Rb4+–)) 15.a4 (better is 15.b6!?+/–) 15...ab5= 16.ab5 Ra4 17.0-0+/– Qf5 18.Bb8+– Rb8 19.Nd4 Qg6 20.bc6 bc6 21.Nc6!! Rc8 22.Nb4 Rb4 23.Bf7! (23...Kf7 24.Rc8+–) 1–0. Palmi,Herbert – Kuehlwein,Ralf, Nord Bayern–ch, 2001.

4.Bb2 Nd7 5.Nf3 Qe7 6.c4 e4 7.Nd4 Ngf6 8.a3 Bc5 9.cd5 Ne5 10.Qb3 0-0 11.Be2 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Rd8 15.0-0 Nd5 16.f4 Bd4 17.Bd4 Ng6 18.Bc4 Be6 19.Nc3 Nc3 20.Bc3 Bc4 21.Qc4 Kf8 22.Bb4 f5 23.Be7 Ke7 24.Qc7 Rd7 25.Qc8 Nf8 26.Rc1 Ne6 27.Qg8 Kd6 28.Qh7 Re7 29.Qf5 Kd7 30.Qd5 Ke8 31.Rc8 Kf7 32.Qf5 1–0. RichardSommer (1945) – fernandogunno (1935), lichess.org, 2020.

4.Bb2 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Bb4).

4.c3 Ba5 5.d4 ed4 6.Qd4 Nf6 7.Ba3 Be6 8.e4? (better is 8.Nf3=+) 8...Bb6–+ (8...Ne4?! 9.Qg7 Kd7 10.Ne2=+) 9.Qe5? (9.Bc5 Bc5 10.Qc5 Ne4 11.Qe3–+) 9...Nbd7 10.Qg5 Bf2! 11.Kf2 Ne4 12.Ke2 Qg5 13.h4 Ng3 14.Ke1 Qe3 15.Be2 Nh1 16.Nf3 Ne5 17.Ne5 Qe5 18.Kf1 Ng3 19.Ke1 Qe2 0–1. wonderhorse – speartooth, net–chess.com, 2004.

3.e3 b6

4.Bb2 Nd7 5.c4 Ngf6 6.cd5 Nd5 7.Qf3 N7f6 8.Be5 Be7 9.Bc4 (9.Nc3 Bg4 10.Qg3 Nc3 11.Bc3 Bd6+/–) 9...Bg4+= 10.Qg3 0-0 (10...Nb4 11.Kf1 (11.Bc7? Nc2 12.Kf1 Qd7–+) 11...Nc2 A) 12.Bc7? Qd7 13.Nf3 0-0–+ (13...Na1?! 14.Ne5 Qc7 15.Bf7 Kf8 16.Ng6 hg6 17.Qc7–+); B) 12.Bf6=) 11.Ne2 Be2 12.Be2 g6 (12...Bd6!?+/–) 13.0-0+– Ne4 14.Qf3 f5? (better is 14...Ng5 15.Qg4 Bf6 16.Bf6 Qf6+–) 15.Bc4 h6 (15...Rf7 16.d3 Bf6 17.de4 Be5 18.Bd5 Ba1 19.ef5 c6 20.Bf7 Kf7 21.fg6 Kg6+–) 16.d3 Ng5 17.Qd5 Qd5 (17...Kh7 18.Qd8 Rad8 19.Bc7+–) 18.Bd5 Nf7 19.Ba8 Ra8 20.Bc7 Rc8 21.Bg3 Bd6 22.Bd6 Nd6 23.a4 1–0. Wall,Bill – AndrewW, chess.com, 2011.

4.Nf3 Nd7 5.Bb2 Qe7 (5...e4 6.Nd4=) 6.Nc3 Bb7 7.Be2 0-0-0 (7...Qf6 8.a4=) 8.0-0 f5 (8...Qe6 9.a4+=) 9.Rc1 (9.a4!?+/–) 9...g5 10.Na4 g4 11.Ne1 Ndf6 (11...Qh4!? 12.c4 dc4+=) 12.c4 d4 13.Nd3 (13.ed4!? ed4 14.c5+/–) 13...c5 (better is 13...e4!? 14.Bd4 ed3 15.Bd3 f4–/+) 14.bc6+= Bc6 15.ed4 ed4 16.Qb3?? (16.c5 b5 17.Nb4 Qe8=) 16...Rd7 17.Nb6 Kd8?? 18.Nd7+– Bd7 19.Nf4 Ke8 20.Bd4 Be6 21.Rfe1 Qb4 22.Ne6 Qb3 23.ab3 Bb4 24.Bf6 Bd2 25.Bh8 Bc1 26.Rc1 Kf7 27.Nd8 Kg6 28.c5 (28...h5 29.Ra1+–) 1–0. 32qaz – rene822, Live Game Caissa's Web, 2004.

3.e3 d4

4.ed4 ed4 5.Bb2 b6 6.c4 dc3 7.Nc3 Bb4 8.Qf3 Bc3 9.Bc3 Qe7 10.Be2 Nf6 11.Qa8 Bg4 12.Qb8 1–0. A_VB – micaleel, lichess.org, 2019.

4.ed4 Qd4 5.Nc3 Bc5 6.Qf3 (6.Qe2 Bg4 7.Nf3 Bf3 8.Qf3 Nd7=) 6...Bg4 7.Nge2 (better is 7.Qg3 Nf6 8.Nge2=+) 7...Qd7?? (better is 7...Bf3!? 8.Nd4 ed4–/+) 8.Qg3 (better is 8.Qb7 Nf6 9.Qa8+–) 8...Qf5? (8...f6 9.f4=) 9.Ne4?? (9.Nd5 Qc8 10.f3 Ne7 11.Ne7 Be7 12.fg4 Qe6+–) 9...Bb6?? 10.N2c3?? Nd7?? 11.Bd3?? 0-0-0?? 12.Nd6!+– cd6 13.Bf5 (13...Bf5 14.Qg7+–) 1–0. 31qaz – rene822, Live Game Caissa's Web, 2004.

3.e3 Nd7

4.a4 a6 5.Bb2 ab5 6.ab5 Ra1 7.Ba1 Ngf6 8.c4 Bd6 9.Nf3 e4 10.Nd4 0-0 11.Be2 Ne5 12.Nc3 Nc4 13.Bc4 dc4 14.0-0 Bc5 15.Nce2 Bd7 16.Bc3 Qe8 17.Qa4 Nd5 18.Qc4 Nc3 19.dc3 Bb6 20.Qb4 Qe5 21.c4 Ra8 22.g3 Bh3 23.Rc1 Bd4 24.Nd4 h6 25.Rd1 c6 26.bc6 bc6 27.Nc6 Qh5 28.Ne7 Kh7 29.Qe1 Qf3 30.Qf1 Bf1 31.Kf1 f6 32.Nd5 1–0. A_VB – mms20102, lichess.org, 2018.

4.c4 Ngf6 5.Bb2 (--> 3.Bb2 Nd7 4.e3 Ngf6 5.c4).

4.Nf3 Ngf6 5.Bb2 (--> 3.Bb2 Nd7 4.e3 Ngf6 5.Nf3).

3.e3 e4

4.a4 b6 5.d3 ed3 6.Qd3 Bb4 7.Bd2 Bd2 8.Kd2 Bb7 9.f3 (9.Qc3 Nf6 10.Qe5 Qe7 11.Qe7 Ke7=) 9...Nf6 10.Ne2 0-0 11.Ke1 Nbd7 12.f4 (12.Qc3!?+=) 12...Nc5 13.Qd4 Nfe4 14.Nbc3 Nc3 15.Nc3 Re8 16.Ke2 (16.Kf2!?–/+) 16...Ne6 17.Qe5?? (better is 17.Qd2 Nf4 18.Kd1–+) 17...Nc5 (better is 17...f6 18.Qe6 Re6–+) 18.Qd4 Re7 (better is 18...Ne4!?–+) 19.Rd1–/+ Rd7 20.Qe5 d5 draws heavy fire 20...f6 21.Qh5 Ne6 (better is 21...a6!?–/+) 22.Kf2= d4 (better is 22...g6 23.Qh4 Nc5=) 23.ed4?? (better is 23.Bc4 Rd6 24.ed4+/–) 23...Nf4–+ (worse is 23...Nd4 24.Bc4 Kh8 25.Bd3=; 23...Rd4?! 24.Bd3 g6 25.Bg6 hg6 26.Qg6 Ng7 27.Rd3–/+) 24.Qh4 Rd4 25.Be2?? (better is 25.Qg3 Rd2 26.Be2 Ne2 27.Rd2 Ng3 28.Rd8 Rd8 29.hg3 Rd2 30.Ne2–+) 25...Nd3!! 26.Rd3 (26.cd3 Rh4 Discovered attack; 26.Rd3 Rh4 Discovered attack; 26.Bd3 Rh4 Discovered attack) 26...Rh4 27.Rd8 Rd8 28.h3 Rf4 29.Kg3 Rfd4 30.Kh2 Rd2 31.Bc4 (31.Rc1–+) 31...Kf8 32.Rg1 (32.Ne2 R8d4 33.Bd3 R4d3 34.cd3 Re2 35.Rg1–+) 32...Rc2 33.Nd5 Rc4 34.Ne3 Ra4 35.Rc1 Rd7 36.Kg1 (36.Rc2 a6 37.ba6 Ba6–+) 36...Rb4 37.Ra1 Rb5 38.Ra7 Rb1 39.Kh2 Bc6 40.Nc4 (40.Ra3 b5–+) 40...Bd5 (better is 40...Rc1 41.Ne3 Rd3 42.Rc7 Re3 43.Rc6 Rc6 44.h4–+) 41.Nd2 (41.Ne3 Be4 42.Ra3 b5–+) 41...Rd1 (better is 41...Rb2 42.Kg1–+) 42.Nf3 Bf3 (42...b5 43.Kg3–+) 43.gf3 b5 44.Rb7 c6 45.Rb6 Rc1 46.Kg3 Rd4 47.f4 (47.Ra6–+) 47...Rd3 48.Kg4 Rg1 (48...g6 49.Rb8 Ke7 50.Re8 Ke8 51.Kh4 Rf1 52.Kg4 h5 53.Kh4 Rf4) 49.Kh4 g5 50.fg5 fg5 51.Kh5 Rh3 0–1. larniletter – Roderick64, ChessWorld.net, 2010.

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

4.Bb2 Nf6 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5).

4.Nc3 Nf6 5.d3 Bb4 6.Bd2 Qe7 7.Nge2 0-0 8.Nf4 Rd8 9.Be2 d4 10.ed4 Rd4 11.0-0 g5 12.Nh5 Nh5 13.Bh5 ed3 14.Qf3 g4 15.Bg4 Bc3 16.Bc8 Ba1 17.Qg3 Kh8 18.c3 Nd7 19.cd4 Rc8 20.Ra1 Qe2 21.Qf4 Qh5 22.a4 c6 23.Rc1 Qd5 24.f3 Qe6 25.bc6 bc6 26.Rc3 Rb8 27.Qe3 Qe3 28.Be3 Rb1 29.Rc1 Rc1 30.Bc1 Nb6 31.Kf2 Nc4 32.Bg5 Kg7 33.h4 f6 34.Bf4 Kf7 35.g3 Ke6 36.Bb8 a5 37.Ba7 f5 38.Ke1 Kd5 39.Kf2 Nb2 40.Ke3 Kc4 41.Bb6 Kb3 42.Ba5 Nc4 43.Kd3 Na5 44.f4 Ka4 45.h5 Kb5 46.Kc3 Nc4 47.Kd3 Nb6 48.h6 Nd5 49.Ke2 Kc4 50.Kf3 Kd4 51.Kf2 c5 52.Ke2 c4 53.Kd2 c3 54.Ke2 c2 55.Kd2 Ne3 56.g4 fg4 57.f5 g3 58.f6 g2 59.Ke2 c1Q 60.Kf3 g1Q 61.f7 Qcf1# 0–1. Betsy516 – Mad005, Computer chess game, 2001.

4.c4 a6 5.cd5= White gets in control 5...Qd5 6.Nc3 Qf5 7.Qa4 Bd7 (7...Nf6 8.f3=) 8.Nge2+= a5 (better 8...Qe5!?+=) 9.Ng3+– (9.Qe4?! Qe4 10.Ne4 Bb5+=) 9...Qg6 10.Nd5 Kd8 11.Ne4 Bb4 (11...Ne7 12.Nf4 Qf5 13.Bb2+–) 12.Qc2 c6 13.Nf4 Qh6 14.Bd3 (14.Nc5 Bc8+–) 14...Ne7 (14...cb5 15.Bb2 Na6 16.Bd4+–) 15.a3+– Bd2?? (better 15...Bd6 16.Nd6 Qd6+–) 16.Bd2 cb5 17.Qc5 g5 (17...b6 18.Qd4 Nf5+–) 18.Nd6 Qg7 (18...Qd6 19.Qd6 gf4+–) 19.Qb6 1–0. DEFFM – GuestZXYL, freechess.org, 2020.

3.e3 Bf5

4.Bb2 Bd6 5.Nf3 (5.d4 Nd7=+) 5...Nd7 6.Be2 e4 (6...Ngf6!?=+) 7.Bg7= Be5?? (better is 7...ef3 8.Bf3 Be5 9.Bh8 Bh8=) 8.Ne5+– (8...Ne5 9.Bh8+–; 8.Be5?! Ne5 9.Ne5 Qf6 10.Nf7 Qf7+/–) 1–0. trex1 – kingofthecrop4, Live Game Caissa's Web, 2005.

4.Bb2 Nd7 5.d4 ed4 (5...Bb4 6.Bc3 Bc3 7.Nc3=+) 6.Bd4= Ngf6 7.Nd2 Bd6 8.Bd3 Bd3 9.cd3 0-0 10.Ne2 a6 11.ba6 Ra6 12.Qb3 c5 13.Bf6 Qf6 14.Rb1 Nb6 15.0-0 Rfa8 16.Nf3 Bc7 17.Ra1 Ra3 18.Qc2 Nd7 (18...R8a5 19.Rfb1=+) 19.d4 c4 (19...R8a5 20.Rfc1=+) 20.Nc3= Qc6 21.Rfb1 Ba5 22.Nb5 Rd3 23.Rb2 f5 (23...Ra6 24.a4=) 24.Rab1 g6 (24...Qe6 25.a3=) 25.Qe2 Re8 26.Rc2 f4 27.Qd3 cd3 28.Rc6 bc6 29.Na7 c5 30.Nc6 (30.dc5 fe3 31.c6 ef2 32.Kf2 Nf6=+) 30...Bc3 (30...fe3 31.fe3 Bb6 32.Kf2=) 31.ef4 c4 32.Kf1 Nf6 33.a4 Ra8 (33...Re2 34.Rb8 Kg7 35.Rb7 Kf8 36.Rb8 Ne8 37.g3=+) 34.a5= Kg7 (34...Kf7 35.Ng5 Kg8 36.Rb5=) 35.Nfe5 Ne4 36.Rb7 Kh6?? 37.f3+– Nd6 38.Ng4 Kh5 1–0. Kazimierski,Tomasz – Bass,Stanley, IECC, 1999.

4.Bb2 Nd7 5.Nf3 Bd6 6.Nc3=+.

4.Bb2 Nd7 5.Nf3 Bd6 6.c4 c6 7.a4 Ngf6 8.Be2 0-0 9.0-0 Qc7 10.h3 Rad8 11.Nc3 d4 12.ed4 ed4 13.Nd4 Bg6 14.Nf3 Nc5 15.d4 Bf4 16.Qe1 Nb3 17.Rd1 Rfe8 18.d5 Bc2 19.dc6 Bd1 20.Nd1 bc6 21.Bf6 gf6 22.Qc3 Nd2 23.Nd2 Bd2 24.Ne3 Bc3 0–1. RichardSommer (2190) – Tingol_Daigr (2040), lichess.org, 2020.

3.e3 f6

4.Bb2 c6 5.a4 Be6 6.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3 c6 6.a4).

4.c3 Bd6 5.d4=.

4.c3 Bf5 5.Qa4 (5.d4 Nd7=) 5...Nd7=+ 6.b6? (better is 6.d4=+) 6...ab6–+ (< 6...cb6 7.c4 Qc8 8.Nc3 dc4 9.Bc4–/+) 7.Qb5 c6 8.Qe2 Bd6 9.g3 Ne7 10.h4 0-0 11.h5 h6 12.g4 Bh7 13.f4? ef4 14.Qh2 Qc7 15.Qh4 fe3 16.de3 Bg3 17.Qg3 Qg3 18.Kd1 Ne5 19.Nd2 Qe3 20.Ne2 Nd3 21.Nf4 Nf2 0–1. steeltheone – johnava4, Caissa.com, 2004.

4.d4 Nh6=.

3.e4 de4

4.Bb2 Bd6 5.c4N Nd7 6.Nc3 (6.Qg4!?–/+ Ngf6 (6...Ne7 7.Qg7 Ng6 8.Qh6 Nc5 9.Ba3 Bf5 10.Nc3–/+) 7.Qg7 Rg8 8.Qh6 Nc5 9.Nc3 Nd3 10.Bd3–/+) 6...Nc5–+ (6...Ngf6 7.d3 ed3 8.Qd3 Nc5 9.Qe3 Ng4 10.Qe2–/+) 7.Qe2?? (better is 7.d3 ed3 8.Bd3–+ Nf6 9.Bc2 Bg4 10.f3–+; 7.d4 ed3 8.Bd3 Nf6 9.Bc2 0-0 10.Nf3–+) 7...Nd3 8.Kd1 Nb2 9.Kc2 Nd3 10.Qe4 (10.Ne4 Nf4 11.Qf3–+) 10...Nf2 11.Qf3 Nh1 12.g3 Ng3! 13.Qg3 (13.Qg3 Nf6 Combination; 13.hg3 Nf6 Combination) 13...Ne7 14.Qg7 (14.Nge2 Nf5 15.Qf2 a6–+) 14...Rg8 15.Qh7 (15.Qh6 Rg1 16.Ne4 Ng6 17.Qh7 Bf8–+) 15...Bf5 16.Bd3 Bh7 17.Bh7 Rg7 18.Be4 c6 19.bc6 bc6 20.Nge2 f5 21.Bf3 e4 22.Bh5 Kd7 23.Ng3 Rb8 24.a3 Bg3 25.hg3 Rg3 26.Rd1 Qb6 27.Rb1 Rc3! 28.dc3 (28.Kc3 Nd5 Mate attack; 28.dc3 Qb1 Mate attack) 28...Qb1 29.Kd2 Qd3 30.Kc1 (30.Ke1 e3 31.Be8 Ke8 32.c5 Rb1) 30...Rb1 0–1. RisingFast – marekt, ChessWorld.net, 2016.

4.b6 ab6–+ 5.a4 Bd7 6.Bc4 Ra4 (better is 6...b5!? 7.Bb3–+) 7.Ra4 Ba4 8.d3 ed3 9.Bb3 (9.Qh5 Qe7 10.Bd3–+) 9...Bb3 10.cb3 Bb4 11.Bd2 Bd2 12.Nd2 Nf6 13.Ngf3 0-0 14.Ng5 Nc6 15.0-0 h6 16.Ngf3 e4 17.Nh4 Nd4 18.Nc4 Ne2 19.Kh1 Ng4 20.f3 (20.g3 Qg5–+) 20...Qh4 21.fg4 Ng3 22.Kg1 Nf1 23.Qf1 Qg4 24.Ne5 (24.h3 Qg3 25.Qf2 Qf2 26.Kf2 f5–+) 24...Qg5 25.Nd7 (25.Nc4 b5 26.Nb2 Ra8 27.Nd3 ed3–+) 25...Rd8 0–1. dc – Hflew, HCL–T067 playchess.de, 2003.

4.c4 Nf6 5.Nc3 Nbd7 6.d4 (6.d3 Bb4 (6...ed3 7.Qd3 Bd6 8.Be3 Ng4 9.Rd1 a6 10.Nf3–/+) 7.Qb3 Qe7 8.Rb1 Ba5 9.Bd2 Nc5 10.Qc2–+) 6...ed4 7.Qd4 Bc5 8.Qd1 (8.Qd2 0-0 9.Qg5 Ne5 10.Be3–+) 8...Qe7 (8...0-0 9.Bg5 h6 10.Be3–+) 9.Qe2 (better is 9.Be3–+ Be3 10.fe3–+) 9...Ne5 10.g3?? (10.Be3 Nd3 11.Kd2–+; 10.Qb2–+) 10...Nd3 11.Kd2 Nf2 12.Bg2 Nh1 13.Bh1 Bf5 (13...Bg1 14.Ne4 Ne4 15.Qe4 Qe4 16.Be4 Bh2 17.Bb2 Bg3 18.Rg1 Bf4 19.Ke2–+) 14.Bb2 (14.Qf1 0-0-0 15.Ke1 Qe6–+) 14...0-0-0 15.Kc1 (15.Ke1 Bg1 16.Kf1 Bc5–+) 15...Bg1 16.Kc2 e3 17.Kb3 Rd2 18.Qe1 Bc2 0–1. delightful_porridge – marekt, ChessWorld.net, 2016.

4.c4 Nf6 5.g3 Bc5 (5...Bg4 6.Qc2 Bc5 7.Bb2 Bf5 8.Qb3 0-0 9.Bg2 Nbd7 10.Ne2 Bd6 11.0-0–+; 5...Bf5 A) 6.Ne2 Be6 (6...Nbd7 7.Bb2 Nc5 8.Nc1 Qd6 9.Bg2 h5 10.Qc2 0-0-0 11.Qc3–+) 7.Bb2 Bc4 8.Qa4 Bd3 9.Be5 Nbd7 10.Bd4 Nb6 11.Bf6–+; B) 6.Bb2 Bd6 (6...Bc5 7.f3 0-0 8.Nc3 Qd7 9.Ne4 Be4 10.fe4 Ne4 11.Nh3–+) 7.Bg2 Nbd7 8.d3 Nc5 9.de4 Nfe4 10.Qe2 Nf6 11.Ba3–+; 5...a6 A) 6.Qc2 Bc5 (6...Bf5 7.Qc3 Nbd7 8.Ba3 ab5 9.Bf8 Rf8 10.cb5 Be6 11.d4–+) 7.Bb2 Bf5 8.Qb3 Nbd7 9.Bh3 Bh3 10.Nh3 0-0 11.Qc2–+; B) 6.Bb2 Bc5 (6...ab5 7.cb5 Bc5 8.f3 Qd6 9.Qe2 Qb6 10.Nh3 ef3 11.Qe5–+) 7.f3 0-0 8.Bg2 ef3 9.Nf3 e4 10.Ng5 Re8 11.Qb3–+; C) 6.Nc3 ab5 (6...Bf5 7.f3 ab5 8.cb5 Bc5 9.Bb2 0-0 10.Qe2 Qd4 11.a3–+) 7.cb5 Bc5 8.Bb2 Bg4 9.Qc1 0-0 10.Bg2 Bf5 11.f3–+) 6.Nc3 (6.Bb2 Qd6 (6...0-0 7.Bg2 Qd3 8.Qb3 Qd6 9.f3 ef3 10.Nf3 e4 11.Ng5–+) 7.Qe2 Bg4 8.f3 ef3 9.Nf3 e4 10.Bg2 0-0 11.Kd1–+) 6...0-0 (6...Bg4 7.Qc2 Bf5 8.Nd1 0-0 9.Ne3 Bg6 10.Bb2 Nbd7 11.Bg2–+) 7.Bg2 (7.Bb2 Bg4 8.Nce2 Nbd7 9.Bg2 c6 10.d4 ed4 11.bc6–+) 7...Qd4 8.Qe2 Be6 9.Bb2 (9.Bf1 A) 9...Rd8 10.f3 (10.Rb1 Bg4 11.Qe3–+) 10...Bb4–+ 11.Rb1–+; B) 9...Bg4 10.f3 Qg1 11.Rg1–+) 9...Bc4 10.Qe3 Nbd7 (10...Ng4 11.Qd4–+) 11.Nge2 Qd6 12.Ne4 Ne4 (worse is 12...Be3 13.Nd6 Bf2 14.Kf2 cd6 15.Ba3–+) 13.Qe4 Bb5 14.0-0 (14.Qf5 Bd3 15.Be4 Be4 16.Qe4 Qb6 17.Be5 Bf2 18.Kf1 Rae8–+) 14...Bd3 (better is 14...Qd2 15.Be5 Qe2 16.Qe2 Be2 17.Rfe1 Ne5 18.Re2–+) 15.Qf3 e4 16.Qg4 Ne5 17.Be5 Qe5 18.Nc3 (18.Rfe1 f5 19.Qf4 Qe7–+) 18...Bf1 19.Rf1 f5 20.Qf4 (20.Qe2 Rad8–+) 20...Qf4 21.gf4 c6 22.a4 (22.Rc1 Rad8 23.Ne4 fe4 24.Rc5 Rd2–+) 22...Rad8 23.Rd1 Rf6 24.Be4 (24.Kf1 Rfd6 25.Ke2 Rd3–+) 24...fe4 25.Ne4 Rf5 26.Ng5 (26.Rb1 Bb6 27.Re1 Ra5–+) 26...Rf4 (26...Rd4 27.Ne6 Ra4 28.Re1–+) 27.Ne6 Rg4 28.Kf1 Rd5 29.f3 (29.a5–+) 29...Rg1 30.Ke2 Re5 (30...Re5 31.Kd3 Rd1–+) 0–1. delightful_porridge – tripp_stir, ChessWorld.net, 2013.

3.h3 c6

4.a4 c5 5.a5 Bf5 6.Bb2 d4 7.g4 Be4 8.Nf3 Be7 9.d3 Bf3 10.ef3 Bh4 11.Bg2 Nd7 12.f4 Qe7 13.f5 Rb8 14.0-0 Ngf6 15.a6 b6 16.Bc6 0-0 17.c3 Rbc8 18.cd4 ed4 19.Re1 Qd6 20.Qf3 Nb8 21.Bb7 Rce8 22.Nd2 Bg5 23.Ne4 Ne4 24.Re4 Re7 25.Bc1 Bc1 26.Rc1 Nd7 27.Rce1 Ne5 28.Qf4 Rfe8 29.Bc6 Rd8 30.Re5 Re5 31.Re5 h6 32.Re8 Kh7 33.Qd6 Rd6 34.Re7 f6 35.Ra7 Rd8 36.Rb7 Rf8 37.a7 Kg8 38.Rb8 Rb8 39.ab8Q Kh7 40.Bd5 h5 41.Qg8 Kh6 42.f4 1–0. hamiltonharris (1880) – tulku, ChessWorld.net, 2013.

4.a4 f6 5.Bb2 Bf5 6.g4 Be4 7.Rh2 a6 8.e3 ab5 9.ab5 Ra1 10.Ba1 cb5 (10...Bd6 11.Nc3 Bg6 12.Rg2=+) 11.Bb5 Nc6 12.Nc3 Bb4 (12...Qa5 13.Bb2=+) 13.Qb1 (better is 13.Ne4 de4 14.c3=) 13...d4?? (better is 13...Bc3 14.Bc3 d4=+) 14.Qb4 (14.Ne4 Qe7+–) 14...Qd7? (14...dc3 15.d3 (15.Qe4 Qd2 16.Kf1 Qc1 17.Kg2 Qa1+=) 15...Bd5 16.e4+/–) 15.Qa4?? (better is 15.Ne4 Nb4 16.Bd7 Kd7 17.Kd1 de3 18.fe3+–) 15...dc3+/– 16.Qa8 (16.Qe4 Qd2 17.Kf1 Qc1 18.Kg2 Qa1 19.Bc6 bc6 20.Qc6 Kf7 21.Qd5 Kg6 22.Qd3 Kh6+/–) 16...Qd8 17.Qd8 Kd8 18.Bc3 (18.d3!? Bd5 19.Bc3+/–) 18...Bc2+= 19.Bc6 (19.f4 e4=) 19...bc6= 20.Ba5 Kc8 21.Ne2 (21.d4 ed4 22.ed4 Ne7=) 21...e4 22.Nd4 c5?? (better is 22...Bd3=) 23.Nc2+– (23…h5 24.g5 fg5 25.Rg2+–) 1–0. riverborne – FierceDragon, Live Game Caissa's Web, 2004.

3.Ba3 Ba3

4.Na3 b6 5.c4 d4 (5...Nf6 6.cd5 Qd5 7.Qc2=+) 6.Nc2 (6.e3 Nf6=) 6...Bb7 7.Nf3 f6 8.e3 de3 (8...d3 9.Nb4=+) 9.de3 (9.fe3 a6=) 9...Qd1 10.Rd1 Ne7 11.Nb4 0-0 (11...a6 12.Nd5 Nd5 13.cd5 ab5 14.Bb5 Ke7 15.Bc4=+) 12.Be2 (12.c5 bc5 13.Nd3 Nd7=) 12...a5 (12...a6 13.h4=) 13.Nd5+= Nd5 14.cd5 Nd7 15.d6 (15.Bc4 Kf7+=) 15...cd6 16.Rd6 Rfd8 17.0-0 Rac8? (better is 17...Kf8!?=) 18.Rfd1+/– Rc2 (18...Rc7 19.Nd2 Re8 20.Nc4+/–) 19.Bd3+– Ra2?? (better is 19...Rc5 20.Bf5 Bc8+–) 20.Bc4 Kh8 (20...Kf8 21.Ba2 Bc8+–) 21.Ba2 Bc8 22.Be6 1–0. Fritz 11 – uzvz, internet, 2009.

4.Na3 c6 5.c4 dc4 6.Nc4 Qd5 7.Ne3 (7.e4!? Qe4 8.Qe2 Qe2 9.Be2=) 7...Qb5–/+ 8.Rb1 Qa5 9.Nc4 Qd5 10.Nf3?? (Better is 10.Qc2 Nf6 11.Ne3–/+) 10...Qc4–+ 11.Ne5 Qe6 12.d4 Nf6 13.e3 Nbd7 14.Bc4 Nd5 15.Nd7 Bd7 (Better is 15...Qd7!? 16.Qh5–+) 16.Rb7 Qg6 17.0-0 Bg4 18.Qb3 Bh3?? 19.Rb8?? Rb8 20.Qb8 Ke7?? 21.Qe5 Kd8 22.Bd5= cd5 23.Qd5 Ke7 24.Rc1 Rd8 25.Qe5 Be6 26.g3 Kf8 27.d5 Rd5 28.Qb8 Ke7 29.Qa7 Ke8?? 30.Qa3? Qe4–+ 31.Qa8 Ke7 32.a4?? Bh3 33.Rc7 Kf6 34.Qd8 Rd8 (35.Rc6 Qc6 36.f3 Qc1 37.Kf2 Qf1) 0–1. pinecrest1981 – ross60, Live Game Caissa's Web, 2004.

4.Na3 Qe7 5.Nb1–/+.

4.Na3 Nf6 (--> 1.b4 e5 2.Ba3 Nf6 3.b5 Ba3 4.Na3 d5).

4.Na3 Bg4 5.c4=+ Qd6 (5...d4 6.g3=+) 6.Qb3 Nf6 (6...Be6 7.Rc1=+) 7.cd5= Qd5 8.h3 (8.Qd5!? Nd5 9.Rc1=) 8...Qb3=+.

4.Na3 Qd6

5.Qc1 Be6 6.e3 Nf6 7.Nf3 0-0 8.c4 e4 9.c5 Qd7 10.Nd4 c6 11.Nac2 a6 12.a4 Rc8 13.b6 Qe7 14.Ne6 fe6 (14...Qe6?! 15.Be2=) 15.Nd4 Nbd7 16.Nb3 Rf8 17.Be2 Ne5 18.Qc3? (18.0-0 Nfd7+=) 18...Nd3?? (better is 18...Nfg4–+) 19.Bd3= ed3 20.f3 e5 21.0-0 e4 22.fe4 de4 23.Rf4 Nd5 24.Qc4 Rf4 25.ef4 Rf8 26.g3 Kh8 27.Re1 Re8 28.Nd4 g6 29.f5 Qg5 30.Qd3 (better is 30.Ne6 Qf5 31.Qe4 Qe4 32.Re4=) 30...ed3?? (better is 30...gf5 31.Qc2 Qf6+=) 31.Re8+– Kg7 32.Ne6 Kf7 33.Rf8 (worse is 33.Ng5 Ke8 34.fg6 hg6+–) 33...Ke7 34.Ng5 Kf8 35.Nh7 Kg7 36.fg6 (36.Ng5 Kf6 37.Ne4 Kf5 38.Nd6 Ke6 39.Nb7 Nf6+–) 36...Nc3?? (better is 36...Kg6 37.Nf8 Kf5 38.g4 Kg4+–) 37.Ng5+– (37.dc3 d2 38.h4 d1Q 39.Kh2 Qe2 40.Kh3 Qf1 41.Kg4 Kg6 42.h5 Kh7–+) 37...Kg6 38.Ne6 (better is 38.Kf2 Na4 39.Ne4+–) 38...Na4?? (38...Ne4 39.Nf4 Kf5 40.Nd3 Nd2+–) 39.Nf4 Kf5 40.Nd3 Ke4 (40...a5 41.h4 Kg4+–) 41.Nf2 (better is 41.h4 Kf5 42.h5+–) 41...Kd5 42.Nd3 Nc5?? (42...Ke4 43.h4 Kf5 44.h5+–) 43.Nb2?? (better is 43.Nc5 Kc5 44.h4+–) 43...a5+= 44.d3? (44.Nd1 a4 45.Nc3 Ke5=) 44...a4–/+ 45.h4?? (better is 45.Nc4–/+) 45...a3–+ 46.Nd1 Kd4 0–1. Juras,Vlado – Krnjak,Nenad, Varazdin CRO, 2nd League Nord, 2012.

5.Qc1 Ne7 6.c4 b6 (6...d4!?=+) 7.cd5= Nd5 8.e4 (8.Nc4 Qf6=) 8...Nf6 9.Nc4 Qc5 10.Bd3 Bb7 (10...Qb5?? 11.Nd6 cd6 12.Bb5 (12.Qc8?! Ke7 13.Qh8 Qd3+–) 12...Ke7 13.Qc7 Nbd7 14.d4 ed4 15.Nf3+–) 11.Nf3 Be4 (better is 11...Ne4!? 12.Be4 Be4 13.Nce5 Qb5 14.Qc7 0-0=+) 12.Be4 Ne4 13.0-0 Nd7 (13...Qb5? 14.Re1 (14.Nce5?! 0-0+=; 14.Nfe5 0-0=+) 14...Nc5 15.Re5 Kf8 16.d4+–) 14.d3 Nef6 15.Qg5 (15...e4 16.Rfe1=+; better is 15.Nce5!? Qb5 16.Nd7 Qd7 17.Re1 Kf8 18.Ne5=) =+. pinecrest1981 – monaco5, Live Game Caissa's Web, 2004.

5.Qc1 Nf6

6.Qb2 0-0 7.f3 Be6 8.0-0-0 a6 9.d4 ed4 10.Rd4 ab5 11.Nb5 Qe5 12.g4 (better is 12.Rb4 Qe3 13.Kd1–+) 12...c6 13.Na3 (13.Rd2 Qb2 14.Kb2 cb5 15.g5–+) 13...Qe3 14.Kb1 Ra3 (< 14...Qa3 15.Qa3 Ra3 16.Kb2–+) 15.Rd3 Rd3 16.cd3 d4 17.Qb7 Qd2 18.Qb2 Qd1 19.Qc1 Ba2! 20.Kb2 (20.Ka2 Qc1) 20...Qb3 21.Ka1 Ng4! 22.fg4 (22.Qb2 Qd1 23.Ka2 Nd7 24.Qa3 Rb8 25.Qb2 Ra8 26.Qa3 Qc2 27.Ka1 Ra3) 22...Qa4 (22...Nd7 23.Bh3 Ra8 24.e3 Bb1 25.Qa3 Ra3) 23.Kb2–+ Bd5 24.Qa1 (24.Qc2 Qb5 25.Kc1 Bh1 26.Nf3–+) 24...Qb4 25.Kc2 (25.Kc1 Qe1 26.Kc2 Qa1 27.Nf3 Qc3 28.Kb1 Nd7 29.Nd4 Rb8 30.Nb3 Rb3 31.Ka2 Qa5) 25...Bb3 26.Kc1 Qe1 27.Kb2 Qc3 28.Ka3 Qa1 29.Kb3 Qf1 (29...Qb1 30.Ka3 Nd7 31.Bg2 Ra8) 30.Kc4 Rd8 (30...Qa1 31.Kc5 Qc3 32.Kb6 Qb3 33.Kc7 Na6 34.Kc6 Rc8 35.Kd6 Qe6) 31.h4 Qb1 32.e3 (32.e4 Qb5) 32...Qb5 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

6.c4 Be6 7.c5 Qd7 8.Nf3 c6 9.Ne5 Qc7 10.e3?? (better is 10.Qb2+=) 10...Qe5–+ 11.Qc3? (11.d4 Qc7 12.bc6 bc6 13.Bd3–+) 11...Qc3 12.dc3 Nbd7 13.c4 Nc5 14.Rc1 Ncd7 15.cd5 Bd5 16.Bc4 Bg2 17.Rg1 Be4 18.Rg7 Bg6 19.bc6 bc6 20.f3 (20.Be2 Kf8 21.Rg6 hg6 (< 21...fg6 22.Rc6 Ke7 23.Nb5–+) 22.Rc6 Rb8–+) 20...Kf8 21.Rg6 hg6 22.Kd2 (22.Kf2 Rh2 23.Kg3 Rd2–+) 22...Rh2 23.Kd3 Rd8 (23...Ne5 24.Kc3 Nf3 25.Bb3–+) 24.Nc2 (24.e4 Ne5 25.Ke3 Rh3–+) 24...Nb6 (better is 24...Ne5!? 25.Kc3 Nf3 26.Kb4–+) 25.Kc3 Nfd5 26.Kd4 (26.Bd5 Nd5 27.Kb3 Rb8 28.Kc4 Rc2 29.Rc2 Ne3 30.Kd3 Nc2 31.Kc2 Rb5–+) 26...Nc4 (better is 26...Nb4! 27.Kc3 Nc2 28.Rc2 Rc2 29.Kc2 Nc4 30.Kc3 Ne3 31.a4–+) 27.Kc4 Rc2! 28.Kb3 (28.Rc2 Ne3) 0–1. Homer (1745) – fastgameeddie (2205), ChessWorld.net, 2002.

6.Nf3 0-0 7.e3 c6 8.Be2 Bg4 9.h3 Bf3 10.Bf3 e4 11.Be2 Nbd7 (11...a6 12.bc6 Nc6 13.0-0–/+) 12.c4 a6 13.cd5 (13.ba6 ba6 14.Qc3 c5=+) 13...cd5 (13...cb5!? 14.0-0 Rac8–+) 14.Nc2 Rfc8 15.Qb2 Ne5 16.0-0 ab5 17.Bb5 Ra5 18.Nd4 g6 (18...Rc7!?=+) 19.Rfc1= Rca8 20.a4 h6 21.Nb3 Nfd7?? (better is 21...R5a7=) 22.d4 (22.Na5 Ra5 23.Bd7 Nd7 24.Rc8 Nf8 25.Qb7 Qe5+–) 22...ed3 23.Bd7 Nd7 24.Qd4?? R5a7= 25.Qd3 Ne5 26.Qe2 Nc4 27.a5 b5 28.ab6 Ra1 29.Na1 Qb6 30.Rf1 Re8 31.Qd3 Qe6 32.Nc2 Ne5 33.Qd4 Rc8 34.Rc1 Rc4 35.Qa7 Kh7 36.Qa4?? Ra4–+ (37.Rd1 Qf6–+) 0–1. pinecrest1981 – ReynaldoMiranda, Live Game Caissa's Web, 2004.

6.f3 Nbd7–+

7.d3 Qc5 8.c4 Qb4 (8...a6 9.cd5 Qb4 10.Kf2 ab5 11.Nc2 Qc5 12.e3 Nd5 13.d4 ed4 14.ed4–+) 9.Kd1 (better is 9.Kf2!?–/+) 9...dc4 10.dc4 e4 (10...0-0 11.e3–+) 11.Rb1 (11.e3 Qc5–+) 11...Qc5 12.h3 (12.Rb3 a6–+) 12...a6 13.Rb3 ab5 14.cb5 (14.Nb5 Ra2 15.e3 0-0–+) 14...Qf2 15.e3 (15.Kd2 Nc5 16.Rc3–+) 15...Qf1 (16.Kc2 Qg2 17.Ne2 Qe2 18.Kb1 ef3–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

7.e3 0-0 8.c4 Nc5 9.Qc2 d4–+ 10.g4 de3 11.de3 e4 12.Bg2?? (better is 12.g5 Qe5 13.0-0-0 Qg5 14.f4–+) 12...Nd3 13.Kf1 Qa3 (14.g5 Nd7 15.fe4 N7e5–+; 13...Ng4 14.fg4 Qf6 15.Bf3 Qa1 16.Nb1–+) 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

7.e3 0-0 8.c4 Nc5 9.cd5 Nd5 10.Nc4 Qe7–/+.

7.e3 0-0 8.c4 d4 9.Qb2–+.

7.e3 0-0 8.g4 Nc5 9.Rb1 Bd7 10.Qb2 e4 (10...h6 11.Ne2–/+) 11.fe4 (better is 11.g5!? Ne8 12.Bg2–/+) 11...Nce4 (11...de4?! 12.g5 Nd5 13.Nc4–/+) 12.Be2 (12.Qb4 Qb6–+ (< 12...Ng4 13.Qd6 Nd6 14.Bg2–/+)) 12...Ng4 (12...Ng3 13.Qb4 Qb4 14.Rb4 Nh1 15.Bf3–+) 13.Bg4? (better is 13.Nf3–+) 13...Bg4 14.Qb4 Qf6 15.Nf3 Qf3 16.Rf1 Qe2 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

7.g4 Nc5 8.h4 (8.g5 Nfd7–+) 8...e4 9.g5 (better is 9.c3–+) 9...Nh5 10.Bh3 (10.g6 Qg3 11.Kd1–+) 10...Qg3 11.Kd1 Bh3 12.Nh3 ef3 (better is 12...Qg2 13.Re1 Qh3 14.Qb2–+) 13.d4 (13.d3 fe2 14.Kd2 Qh4 15.Ke2–+) 13...fe2 14.Ke2 (14.Kd2 Ne4 15.Ke2 Nc3 16.Kd2–+) 14...Qg4 (14...Qg2!? 15.Nf2 Ng3 16.Ke3–+) 15.Kd2 Qd4 16.Ke2 Ng3 17.Kf3 Nh1 18.Qe3 Qe3 19.Ke3 Ng3 20.Re1 0-0-0 21.Kf3 Nge4 22.Nf4 h6 23.Rd1 hg5 24.Rd5 gf4 25.Rd8 Kd8 26.Kf4 Rh4 27.Ke3 Rh3 28.Kd4 Ra3 29.c4 f6 30.b6 Rd3 0–1. excalibur – Caissa, Live Game Caissa's Web, 2004.

3.a4 a6

4.ba6 Na6 5.Nf3 e4 6.Nd4 c5 7.Nb3 c4 8.Nd4 Nc5 9.c3 (9.Nc3!?=+) 9...Bd7–/+ 10.a5 Ra5 11.Ra5 Qa5 12.Ba3 Bd6 13.Bb4 Qb6 14.Bc5 Bc5 15.e3 Nf6 16.Be2 0-0 17.0-0 Ra8 18.f3 Bd6 19.fe4 Ne4 20.d3 Ba4 21.Qe1 cd3 (21...Bh2!? 22.Kh2 Qh6 23.Kg1 Qe3 24.Kh2 cd3 25.Bf3 Qh6 26.Kg1–+) 22.Bd3 g6 23.Be4 de4 24.Qf2 Qc7–+ 25.h4 f5 26.Ne6 Qc4 27.Nf4 Bb5 28.g4?? Qf1 29.Qf1 Bf1 30.Kf1 Ra1 31.gf5 Rb1 32.Ke2 Rb2 33.Kf1 Bf4 34.ef4 gf5 35.Ke1 Kf7 36.c4 h5 37.Kd1 Rf2 38.c5 Ke6 (39.Kc1 Rf4–+) 0–1. maneater – Caissa, Live Game Caissa's Web, 2004.

4.Bb2 ab5 5.ab5 Ra1 6.Ba1 Nd7 7.d4 e4 8.e3 Ngf6 9.h3 Bd6 10.g4 c6 11.Bb2 h5 12.Bg2 Qa5 13.Nc3 Bb4 14.Qa1 Qa1 (14...cb5?! 15.g5 Nh7 16.f4–/+) 15.Ba1 hg4 16.hg4 Rh1 17.Bh1 Ng4 18.bc6 bc6 19.Bg2 c5 (better is 19...Nb6!?–+) 20.Bh3 cd4 21.ed4 (21.Bg4!? dc3 22.Ne2–/+) 21...Nb6 22.Nge2 g5 23.Bg2 e3 (23...Nc4!? 24.Kf1 Bb7 25.Nb5–+) 24.f3 Nf2 25.Kf1 Ba6 26.Kg1 Bd6 27.Bb2 f5 28.Bc1 f4 29.Kf1 Bc4 30.Ke1 (30.Bd2 g4 31.Be1–+) 30...Bb4 31.Bf1 (31.Bb2 Na4 32.Ba1 Be2 33.Ke2 Bc3 34.Bc3 Nc3 35.Kf1–+) 31...Na4 32.Nf4 (32.Bd2 ed2 33.Kd2 Nc3 34.Nc3 Bf1 35.Ke1–+) 32...Bc3 33.Bd2 Bd2 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

4.Bb2 Bd6 5.f4 f6 6.Nc3 d4 7.Ne4 Be7 8.g3 c6 9.Nf3 Bf5 10.Nf2 Bc5 11.g4 Bg6 12.f5 Bf7 13.h4 g6 14.fg6 hg6 15.e3 de3 16.de3 Qd1 17.Nd1 Nd7 18.bc6 bc6 19.Bd3 Bd5 20.e4 Be6 21.g5 fg5 22.Ng5 Bg4 23.Nf2 Bh5 24.Bc4 Ngf6 25.Ne6 Bf2 26.Kf2 Ne4 27.Ke1 Rb8 28.Ba3 a5 29.Ng7 Kd8 30.Rh3 Kc7 31.Ne6 Kc8 32.Ba6 Rb7 33.Rb1 Nec5 34.Bc5 Nc5 35.Nc5 Kc7 36.Rb7 Kd6 37.Ne4 Ke6 38.Ng5 Kd6 39.Nf7 1–0. hamiltonharris (1775) – blobo (1785), ChessWorld.net, 2014.

4.Nc3 d4 5.ba6 (5.Nb1 ab5 6.a5–+) 5...dc3 6.ab7 Bb7 7.Ra3?? (7.e3–+) 7...Ba3 8.Ba3 cd2 9.Qd2 Qd2 10.Kd2 Ra4 11.Bc5 (11.Bb2 Nf6 12.f3 Nc6–+) 11...Ra1 12.Nf3 Bf3 13.ef3 Na6 14.Bb5 Kd8 15.Ra1 Nc5 16.Ra8 Ke7 17.Re8 Kf6 18.g4 g5 19.Kc3 Ne6 20.Bc4 Kg7 21.Kb4? Nf6 22.Re7 c5 23.Kb5 Rb8 24.Kc6 Rc8 25.Kd6 Nd8 26.Bb5 c4 27.Re5 h6 28.f4 Ng4 29.Re7 Nh2 30.Kd7 Ra8 31.Bc4 Ng4 32.Bd5 Ra5 33.c4 gf4 34.f3? Nf6–+ 35.Kd8 Nd5 36.cd5 Rd5 (37.Ke8 Kg6–+) 0–1. bjhaskins – dgall (1665), net–chess.com, 2004.

4.e3 ab5

5.Bb5 c6 6.Bd3 b5 7.Ba3 Ba3 8.Ra3–/+.

5.Bb5 c6 6.Bd3 b6 7.c4 (7.Be2 e4–/+) 7...e4 8.Be2 Qg5 9.cd5?? (better is 9.g3–/+) 9...Qg2–+ 10.dc6 (10.Bf3 ef3 11.Qf3 Qf3 12.Nf3–+) 10...Qh1 11.c7 (11.Bf1 Qg1 12.Qc2 Nf6–+) 11...Qg1 12.Bf1 Nd7 13.Qb3 Nc5 14.Qb5 Bd7 15.Qb6 Nd3 16.Ke2 Qg4 17.f3 Qf3 0–1. steelknight – Caissa, Caissa's Web, 2004.

5.Bb5 c6 6.Be2 b6 7.c4 d4 8.e4 d3 9.Bf1 Qd4 10.Nc3 Qc4 11.Nf3 Nd7 12.g3 (12.Ba3 Ngf6 13.Bf8 Kf8–+ (13...Nf8?! 14.Ne5 Qe6 15.f4=; 13...Rf8?! 14.Rc1–+)) 12...Ngf6 13.Bg2 Bb4 14.0-0 Bc3 (14...Ne4?! 15.Ne4 Qe4 16.Ne5=+) 15.dc3 Ne4 (15...Qe4 16.Ne5 Qe5 17.Re1+/–) 16.Bb2 (16.Nd2 A) 16...Qc3? 17.Ne4 Qc2 18.Nd6 Ke7 19.Qf3+– (19.Nc8?! Rac8 20.Qg4 Nf6 21.Qg7 d2 22.Ba3 c5+–); B) 16...Nd2 17.Bd2 0-0–+) 16...Ra5 17.Re1 Nc3 (better is 17...f5!?–+) 18.Bc3–/+ Qc3 19.Rc1 Qa3 20.Rc6 0-0 21.Bh3 Rd5 (21...Ra4? 22.Rc8 Rc8 23.Bd7+–; 21...Qa4?! 22.Qa4 Ra4 23.Rc8+=) 22.Bd7?? (better is 22.Nd2–/+) 22...Bd7–+ (22...Rd7?! 23.Nd2–/+) 23.Rb6 Qa4 (better is 23...d2 24.Nd2 Qa2–+ (24...Ba4?! 25.Qe2–/+; 24...Qa4?! 25.Qa4 Ba4 26.Nc4–/+)) 24.Ne5?? (better is 24.Qa4 Ba4 25.Nd2–+) 24...d2 25.Re2 Qd1 (26.Kg2 Qf1 27.Kf3 d1Q 28.Kf4 Qd4 29.Re4 Qdf2 30.Kg5 Qf5 31.Kh4 Q1h3) 0–1. marsman – Caissa, Live Game Caissa's Web, 2004.

3.a4 Bc5

4.Bb2=+ d4 5.h3 (5.c3 Be6=+) 5...Nf6–/+ 6.g4 (6.e3 Be6–/+) 6...Qd5 7.Rh2 h6 (7...Be6 8.Bg2 e4 9.a5–/+) 8.Bg2 (8.c3 0-0=+) 8...e4–/+ 9.d3 (9.c3 Qd6 10.Rh1 d3–/+) 9...Bb4 (better is 9...Qe5 10.Rh1 e3–/+) 10.c3? (better is 10.Kf1–/+) 10...dc3–+ 11.Bc3 Bc3 12.Nc3 Qe5 13.d4 Qh2 14.Be4 Qg1 15.Kd2 Ne4 16.Ne4 Qd1 17.Kd1 0-0 18.Rc1 c6 19.Rc4 Be6 20.Rb4 cb5 21.ab5 a5 22.Ra4 Bb3 23.Ke1 Ba4 24.Nc5 Bb5 25.Nb7 a4 26.Nd6 Bc6 27.Nc4 a3 28.Na3 Ra3 (29.f3 Rd8–+) 0–1. riverborne – EELDROP, Live Game Caissa's Web, 2005.

4.Bb2 Qf6 5.e3 c6 6.f4 d4 7.Qf3 Nh6 8.fe5 Qf3 9.gf3 de3 10.d4 Be7 11.Bc1 Bf5 12.Be3 Bc2 13.h4 Bb1 14.Rb1 Nf5 15.Bf2 0-0 16.Bd3 g6 17.h5 Bg5 18.Bf5 gf5 19.Nh3 h6 20.f4 Bd8 21.Rb3 Ba5 22.Ke2 cb5 23.Rg1 Kh7 24.Rb5 Bb6 25.d5 Bf2 26.Nf2 b6 27.Nd3 Nd7 28.e6 fe6 29.de6 Rae8 30.Rg6 Rf6 31.Rd5 Rg6 32.hg6 Kg6 33.Rd7 Re6 34.Ne5 Kh5 35.Ra7 Kh4 36.Ra6 Kg3 37.Ke3 h5 38.a5 h4 39.Rb6 Re8 40.Rg6 Kh3 41.a6 Re7 42.Kf2 1–0. hamiltonharris (1820) – Kal1 (1910), ChessWorld.net, 2013.

4.Bb2=+ Nf6 5.Be5 Bf2 6.Kf2 Ng4 7.Kg3 Ne5 8.Nf3=+.

4.c3 Nd7 5.d4 Be7 6.Ba3=+.

4.c3 Nf6 5.d4 ed4 6.cd4 Bb4 (6...Ne4 7.e3 Qh4 8.Qe2 Bb4 9.Bd2 Nd2 10.Nd2=+) 7.Bd2 Bd2 (7...Bd6 8.Nc3=+) 8.Qd2 (8.Nd2 0-0=+) 8...Bf5 (8...Ne4 9.Qf4=+) 9.Nc3 (9.Qg5 Bg6=) 9...0-0 10.h3 (10.Qg5 Qd7=+) 10...Qd6 (10...Ne4 11.Ne4 Be4 12.e3=+) 11.g4 (11.e3 Re8=+) 11...Bg6 (11...Be4 12.f3 Qg3 13.Kd1–/+) 12.Bg2=+ c6 13.Bf3 Be4 14.g5 Bf3 15.Nf3 Ne4 16.Ne4 de4 17.Ne5 Qd5 18.Rg1 c5 19.Rd1= Rd8?? 20.e3?? cd4 21.Qd4+/– Qd4 22.Rd4 Rd4 23.ed4 a6 24.Rg4 ab5 25.Re4 ba4–/+ 26.Nc4 a3?? 27.Re8 1–0. riverborne – EELDROP, Live Game Caissa's Web, 2005.

4.e3 d4 5.d3 (5.Ba3 Ba3 6.Ra3 Nf6=+) 5...Qf6 (5...a6 6.Qh5 Nd7 7.ed4 ed4 8.Bg5–/+) 6.e4 (6.c3 a6=+) 6...Nh6 (6...a6 7.Ba3 Ba3 8.Na3–/+) 7.h3 (7.Nf3 Bb4 8.Bd2 Bd2 9.Nbd2 Be6–/+) 7...0-0 (7...a6 8.Qf3 Nd7 9.Qf6 Nf6 10.Bh6 gh6 11.ba6 Bb4 12.c3 dc3 13.ab7 Bb7 14.Kd1=+) 8.Ba3 (8.Qf3 Qe6–/+) 8...Nd7 9.Be2 b6 (9...a6 10.Nf3–/+) 10.Nf3 a6 11.0-0 ab5 12.a5? (better is 12.ab5 Ra5 13.Bc5 Ra1 14.Bf8 Nf8 15.Qd2–/+) 12...b4 13.Bc1 ba5 14.Nh2 (14.Nbd2 a4–+) 14...Qg6 15.Ng4 Ng4 16.Bg4 Nf6 17.Bc8 Rfc8 18.Nd2 Nh5 19.Nc4–/+ Bd6 20.Bd2 Nf4 21.Bf4–/+ ef4 22.f3? Be7 23.Ne5? Qe6 24.Ng4 f5 25.Nf2 fe4 26.Ne4 Bh4 27.Qc1 c5 28.Qf4–/+ b3?? 29.Rac1?? b2 30.Rb1–/+ Be7 31.Kh1? a4 32.Rb2–/+ a3 33.Rbb1 Qa2 34.Ra1 Qc2–+ (35.Qf5 Re8–+) 0–1. QxQ02 – vello01, Live Game Caissa's Web, 2005.

4.e3 Nf6 5.Nf3 Bg4 6.Be2–/+.

4.Nf3 Qf6 5.Bb2 Nh6=+.

3.a4 Nf6–/+

4.Ba3 Ba3 5.Ra3 c5–/+.

4.Bb2 Bc5 5.Be5 (better is 5.d4!? ed4 6.Bd4 Bd4 7.Qd4=+) 5...Bf2–+ 6.Kf2 Ne4?? (better is 6...Ng4 7.Ke1 Ne5–+) 7.Ke1+– Qh4 (7...0-0+–) 8.g3 Qh5 (8...Qh6 9.Nc3 (9.Bc7 Qf6 10.Bf4 Qa1–/+) 9...Nd7 10.Bc7 Nc3 11.dc3+–) 9.Bc7 d4 10.e3 Qf5? 11.Qf3 Qe6 12.Bb8 Rb8 13.Qf4 de3 14.Qb8 ed2 15.Nd2 Nd2 16.Kd2 0-0 17.Bd3 Qd5 18.Ne2 Bf5 19.Qf4 Rd8 20.Qe3 Bd3 21.cd3 Qc4 22.Rhc1 Qb4 23.Nc3 Qb2 24.Ke1 Kf8 25.Ra2 Qb4 26.Kd2 Re8 27.Qf4 Qa5 28.Rf1 f6 29.Qd6 (29...Kg8 30.Qd5 Kf8 31.Qb7+–) 1–0. riverborne – jfq, Live Game Caissa's Web, 2005.

4.Bb2 Bd6 5.e3 0-0 6.Ba3 (6.Be2 c5–/+) 6...c5 7.bc6 Nc6 8.Bd6 Qd6 9.Nc3 d4 10.Nb5 Qc5 11.ed4 (11.c3 de3 12.fe3 Bf5–/+) 11...ed4–+ 12.Nf3 (12.Bd3 a6 13.Na3 Qg5–+) 12...Bf5 13.d3 (13.Bd3 Bd3 14.cd3 a6–+) 13...a6 14.Na3 Nd5 15.c4 Qa5 16.Nd2 (16.Qd2 Nc3 17.Nc2 Rfe8 18.Ne3–+) 16...Nc3 17.Qf3 Rae8 18.Be2 Ne2 19.Kf1 Qc3 20.Qe2 (20.Qf5 Qa1 21.Nab1–+) 20...Re2 21.Ke2 Bd3 22.Kf3 Bf1 23.Kg4 (23.Ke4 f5 24.Kd5 d3 25.Ke6 Qf6 26.Kd5 Qe5) 23...f5 24.Kh4 (24.Kh5 Qd2 25.Kh4 Qf4 26.Kh3 Qg4) 24…Qd2 (25.Rg1 Qf4 26.g4 Qh2 27.Kg5 Qh6#) 0–1. Jones,Malcolm – Ottenweller,Wolfgang (1855), internet, 2000.

4.Bb2 Nbd7 5.e3 (--> 3.Bb2 Nd7 4.e3 Ngf6 5.a4).

4.c3 Bc5 5.e3 Nbd7 6.d4 ed4 7.ed4 Bd6 8.Bd3 Ne4 9.Qe2 0-0 10.Nf3 Re8 11.0-0 Ng3 12.Bh7 Kh8 13.Qd3 Nf1 14.Ng5 Qf6 15.Kf1 Nf8 16.h4 g6 17.Nd2 Nh7 18.Ndf3 Bf5 19.Qd2 Re7 20.Ba3 Rae8 21.Ne5 Ba3 22.Ra3 Kg7 23.f4 Rh8 24.Qa2 Ng5 25.hg5 Qe6 26.c4 dc4 27.Re3 Rh1 28.Kf2 Bd3 29.Nc4 Qf5 30.Kg3 Bc4 31.Qd2 Re3 32.Qe3 Rd1 33.Qe5 Qe5 34.de5 Ra1 0–1. hamiltonharris (1825) – Capstone (1755), ChessWorld.net, 2012.

4.d3 Bd6 5.Nf3–/+.

4.d4 a6 5.e3 (5.de5 Ne4 6.Bb2 Qh4=) 5...e4 6.Nc3 (6.Ba3 Ba3 7.Ra3 Qd6–/+) 6...a5 (6...ab5 7.Bb5 c6 8.Bf1–/+) 7.Ba3 Bb4 8.Bb4 ab4 9.Nce2 Bg4 10.h3 Bh5 11.g4 Bg6 12.f4 (12.Nf4 h6=+) 12...h6 (better is 12...ef3!? 13.Nf3 Ne4–+) 13.f5 Bh7 14.Ng3 (14.Nf4 Qd6=+) 14...Nbd7 15.N1e2 Nb6 16.c3 bc3 17.Nc3 Qd6 18.Nge2 (18.Rg1 0-0=+) 18...0-0 19.Nf4 c6 (19...g5 20.fg6 fg6 21.g5–/+) 20.Be2 (20.a5 Qb4 21.Qd2 Nc4 22.Bc4 Qc4+=) 20...cb5 21.Bb5 (21.ab5 Qb4 22.Kd2 Rfc8–/+) 21...Nc4 (21...Rfc8!? 22.Qb3 Nc4 23.Bc4 Rc4=+) 22.Bc4+= dc4 23.0-0 Rad8 (23...b6 24.Qb1+=) 24.Qe2 Qc7 25.Rfd1 (25.Nb5 Qa5+=) 25...Qa5 (25...g5 26.fg6 fg6 27.Qg2+=) 26.Rdc1 (26.Qc4? Rc8 27.Qa2 Rc3–+) 26...Rc8 27.d5 (27.Rab1 Qc7+/–) 27...Nd7 28.d6 Nc5 29.Rab1 Nd3= 30.Nd3 cd3 31.Qd2 Qe5 32.Nb5?? Qg3–+ 33.Qg2 Qe3 34.Kh1 Rc1 (35.Rc1 Qc1 36.Kh2 d2–+) 0–1. TheLoser – windmill, Live Game Caissa's Web, 2004.

4.e3 c6 5.Bb2 Bd6 6.Nf3 Bg4 (6...e4!? 7.Nd4 c5–/+) 7.Be2 Bf3 8.Bf3 e4 9.Be2 Qe7 10.0-0 0-0 11.c4 Nbd7 12.bc6 bc6 13.Na3 Rab8 14.Qc2 Rfc8 15.d4 ed3 16.Bd3 Ne4 17.Be4 de4 18.Rfd1 Nc5 19.Rab1 Nd3 20.Rd3 0–1. postalpeet (1975) – marekt (2125), gameknot.com, 2015.

4.e3 Nbd7 5.c4 (5.Nf3 e4 6.Nd4 Ne5=+) 5...Bd6 6.Nf3 (6.Ba3 dc4 7.Bc4 Nb6=+) 6...e4 7.Nd4 Ne5 (7...dc4 8.Bc4 Ne5 9.Be2–/+) 8.Qb3 (8.cd5 Nd5 9.Nc3 Bg4=+) 8...c6 (8...c5 9.bc6 bc6 10.cd5 cd5=+ (< 10...Nd5 11.Nc6 Qg5 12.Ne5 Qe5 13.Bb2+/–)) 9.Be2? (9.cd5!? c5 10.Nc2–/+) 9...Bg4 (9...c5 10.Nc2 Bg4 11.Nca3–+) 10.0-0 (better is 10.cd5!? c5 11.f3 cd4 12.fg4–/+) 10...c5–+ 11.f3 cd4 12.fg4 d3 13.Bd1 dc4 14.Qc3 Neg4 15.Bg4–/+ Ng4 16.Qg7?? Bh2 17.Kh1 Rf8 18.Qg4+– Be5 19.Qe4 Qg5 20.Rf5 Qh6 21.Kg1 Qh2 22.Kf1 f6 23.Bb2 Qh1? 24.Kf2 0-0-0 25.Nc3 Qh2 26.Qc4 Kb8 27.Qg4 Rg8 28.Qh3 Bg3 29.Kf1 Qh3 30.gh3 Be5 31.Kf2 Bg3 32.Kf3 Be5 33.Rh1 Rg3 34.Ke4 Rg2 35.Rd1 Rd7 36.Ba3 Rg3 37.Rh5 Rg2 38.Nd5 Rgg7 39.Rc1 Rd8 40.Bb4 Rgd7 41.Ne7 Bb2 42.Rc4 Ka8 43.Rh7 Re8 44.h4 Be5 45.Rf7 Rh8 46.Ng6 Rf7 47.Nh8 Rd7 48.Rc8 Bb8 49.Ng6 a6 50.b6 f5 51.Kf5 Rf7 52.Ke6 Rg7 53.h5 a5 54.Rc5 ab4 55.Ra5 Ba7 56.Ra7 Kb8 57.Nf8 b3 58.h6 Rh7 59.Nd7 Rd7 60.Kd7 b2 61.h7 b1Q 62.h8R# (62.h8Q#) 1–0. NN – ChessMaster3000, 1992.

4.e3 Bf5 5.Nf3 Nbd7 6.a5=+.

4.f3 Bf5 5.Bb2 Bd6 6.e3–/+.

4.f3 Rg8 5.h4 (5.Bb2 Bd6–/+) 5...h6 (5...Nh5 6.d4 Be7 7.Bg5–+) 6.g4 g5 (6...Be6 7.g5 Nh7 8.Bb2–/+) 7.h5 (7.hg5 hg5 (< 7...Rg5 8.d4+/–) 8.Bb2 Nbd7=+) 7...e4 8.Bb2 ef3 (8...Bd6 9.Bg2=+) 9.ef3 Qe7 10.Qe2 Be6 11.Bf6 (11.a5!?=+) 11...Qf6–/+ 12.c3 (12.Nc3–/+) 12...d4 (12...Bd6 13.a5–/+) 13.Nh3 (13.Qe4 dc3 14.Nc3 Qe7=+) 13...dc3 14.Nc3 Bb4 15.Rc1=+ c6 16.Na2? Qb2–+ 17.Qd1? Qa2 18.Rc2 Qa4 19.bc6 Nc6 20.Rc6 Qc6 21.Bd3 0-0-0 22.0-0 Rd3 (23.Qe1 Qb6 24.Nf2 Kd8–+) 0–1. riverborne – snowman6, Live Game Caissa's Web, 2004.

4.g3 Bc5 5.Bg2 0-0 6.d3 c6 7.c4 (better is 7.Nf3!?–/+) 7...dc4 8.dc4?? (better is 8.Ba3 Bf2 9.Kf2 Qd4 10.Ke1 Qa1 11.Bf8 Kf8 12.dc4–+) 8...Qd1 (better is 8...Bf2 9.Kf2 Qd1–+) 9.Kd1 Rd8 10.Nd2 Bf2 11.Ngf3 (11.Bh3 Bg4 12.bc6 Nc6–+) 11...Be3 (11...e4 12.Ng5 e3 13.Kc2 ed2 14.Bd2–+) 12.h4 (12.Ne5 cb5 13.Ra3 Bc5–+) 12...Ne4 (better is 12...Ng4–+) 13.Ng5?? (better is 13.Ke1 Ng3 14.Nf1 Bc1 15.Ng3–+) 13...Nd2 14.Bd2 Rd2 15.Ke1 Bg4 16.Bf3 Bg5 (16...Bf3 17.Nf3 Rc2 18.Ne5–+) 17.hg5 (17.Bg4 Rd4 18.Bc8 Bd2 (18...Rc4 19.Bb7 Be3 20.Ba8+=) 19.Kf2 a6 (19...Rc4?! 20.Bb7 Bc3 21.Rab1=) 20.Bb7 Ra7 21.bc6 Ba5–+) 17...Bf3 18.ef3 Rc2 (18...Rd4 19.Rd1–+) 19.Kd1 (19.Rd1 g6 20.Rd8 Kg7 21.Rh4–+) 19...Rc4 20.Kd2 cb5 21.ab5 Nd7 22.Kd3 (22.Rhd1 a6–+) 22...Rac8 23.Ra7 Rc3 24.Ke4 Nc5 25.Ke5–+ Rf3 26.Rc1 f6 27.Kd6 Rd3 28.Ke7 Rc7 29.Ke8 Ne6 30.Ra8 Rd8 31.Rd8 Rc1 32.Rd7 Rc8 33.Ke7 Ng5 34.Rb7 Ne4 35.Rd7 Nc5 36.Rd6 Nb7 37.Rd7 Na5 38.b6 h5 39.Ke6 Re8 40.Kf5 Re5 41.Kg6 Rg5 0–1. gungho555 – coffeehouse, Live Game Caissa's Web, 2004.

4.h4 Bd6 5.Nf3 (5.Ba3 0-0–/+) 5...e4 6.Nd4 (6.Ng5 h6 7.Nh3 Ng4–/+) 6...Bg4 (6...e3!? 7.de3 Ne4 8.f4–+) 7.Ba3–/+ Ba3 (7...0-0 8.Bd6 Qd6 9.c3–/+) 8.Ra3 Qd6 9.c3 Nbd7 (9...0-0 10.a5–/+) 10.g3 (10.a5 Nc5 11.Qc2 0-0–/+) 10...0-0 (10...Ne5 11.Qc2–/+) 11.Bh3 (11.Bg2 a6–/+) 11...Bh3 12.Rh3 Rae8 (12...a6 13.h5–/+) 13.a5 (13.Rh1 Ne5–/+) 13...Ng4 14.a6?? (better is 14.Kf1–/+) 14...Qf6–+ 15.f3 ef3 16.e3 f2 17.Kf1 (17.Ke2 Ne3! 18.de3 f1Q 19.Qf1 Re3 20.Ke3 Qf1 21.Kd2 Qb1 22.g4–+) 17...Re3!! 18.Ne2 (18.de3 Ne3) 18...Rfe8 19.Ra1 Qf3 20.Ra4 Re2 (21.Re4 Re1 22.Qe1 fe1Q 23.Ke1 Re4) 0–1. market (2275) – _MDPhD_ (1870), GameColony.com, 2002.

4.d3 Bc5

5.Ba3 Qe7 6.Bc5 Qc5 7.e3 (7.Nf3 a6–/+) 7...Be6 (7...d4 8.ed4 ed4 9.Nf3–/+) 8.Ne2 (8.c3 Nbd7=+) 8...0-0 (8...Nbd7 9.d4 Qb4 10.c3=+) 9.Ng3 (9.d4 Qb4 10.c3 Qd6=+) 9...Nbd7 (9...d4 10.ed4 ed4 11.Ne4 Qb4 12.c3–/+) 10.Be2 (10.d4 ed4 11.Qd4 Qc2=+) 10...Rfd8 (10...d4 11.ed4 Qb4 12.Qd2–/+) 11.0-0 d4 12.e4 Nf8 13.f4 ef4 14.Rf4 Qe5 15.Rf1 Ng6 16.Nf5 Nf4 17.Bg4 Bf5 18.Bf5= g6 19.Bg4 Qg5= 20.Rf4?? Qf4–+ 21.Bf3 Re8 22.Nd2 Rad8 23.Qe2 Nd5 24.Nc4 Ne3 25.Ne3–/+ de3 26.Re1 Rd4 27.g3 Qg5 28.Qe3 Qe3 29.Re3 Ra4 30.c4 Ra3 31.Kf2 Rd8 32.Be2 c6 33.bc6 bc6 34.d4 Re3 35.Ke3 a5 36.Bd1 c5 37.Ba4? cd4 38.Kd3 Kf8 39.c5 Ke7 40.c6 Kd6 41.Kd4 Rb8 42.e5 Kc7 43.Kc5 h5 44.Bd1? Rb2 45.h3 Rg2 46.g4 h4 47.Bf3 Rg3 48.Bd5 Rh3 49.Bf7 Rc3 50.Kb5 Rc6 51.e6 Rb6 52.Ka5 Rb8 53.Bg6 Kd6 54.Bf5 Ke5 55.Ka6 h3 56.Ka7 Re8 57.Kb7 h2 58.Kc7 h1Q 59.Kd7 Qa8 60.e7 Qc8# 0–1. opel – novice, Caissa.com, 2004.

5.e3 0-0 6.Nf3 e4 7.de4 de4 8.Nd4–/+.

5.e3 b6 6.Be2 (6.Nf3 Bd6=+) 6...Bb7 (6...0-0 7.Nf3 e4 8.de4 de4 9.Nd4=+) 7.Nf3= Nbd7 8.0-0 0-0 9.d4 Bd6 10.Nc3 e4 11.Ne5? Be5 12.de5=+ Ne5 13.Bb2 Qe7 14.f3?? Rad8?? 15.fe4 de4=+ 16.Rf5?? Rd1–+ 17.Rd1 Rd8 18.Rdf1 Rd2 19.Bd1 Nc4 20.Ba1 Ne3 21.Re1 Rg2 22.Kh1 Nf5 (23.Kg2 Qb4–+; 22...Qd6 23.Re5 Qe5 24.Re3 Qh2#) 0–1. TheLoser – tooholy, Live Game Caissa's Web, 2004.

4.e3 Bd6

5.Ba3 0-0 6.Bb2–/+.

5.Ba3 0-0 6.c4–/+.

5.Ba3 c5–/+.

5.c3 0-0 6.Na3 b6 7.Nf3 Bg4 8.Be2 e4 9.Nd4 Be2 10.Qe2 Qd7 11.h3 c6 12.0-0 Bc7 13.f4 c5 14.Ndc2 c4 15.Nd4 a6 16.Kh1 ab5 17.ab5 Qd6 18.Bb2 g6 19.Nac2 Nh5 20.Ra8 Ng3 21.Kh2 Ne2 22.Ne2 Nd7 23.Rf8 Nf8 24.Ncd4 Ne6 25.Ra1 Nc5 26.Ba3 Qf8 27.Nc6 Nb3 28.Bf8 Na1 29.Bb4 Nc2 30.Ned4 Nb4 31.Nb4 f5 32.Nd5 Bd6 33.Nb6 Bc5 34.Nc4 Bd4 35.cd4 Kf7 36.b6 Ke7 37.b7 Kd7 38.b8Q Kc6 39.Qh8 h5 40.Qf6 Kb5 41.Ne5 Kb4 42.Qg6 Kb3 43.Qf5 Kc2 44.Nc4 Kd3 45.Nb2 Kc2 46.Qe4 Kb2 47.d5 Kc1 48.d4 Kd1 49.f5 Ke1 50.f6 Kd2 51.d6 Ke2 52.d7 Kd2 53.d8Q Ke2 54.f7 Kd2 55.f8Q Ke2 56.Qef3 Kd2 57.Qa5 1–0. uaydgn2 – tchelo_2, lichess.org, 2020.

5.Ne2 0-0 6.d4–/+.

5.Ne2 a6 6.Na3 (6.Ba3 ab5 7.ab5 Bg4+=) 6...Bd7 (6...0-0 7.Bb2–/+) 7.Ng3 h5 8.Be2 (8.ba6 Na6 9.Nb5 Bb4–/+) 8...h4 9.Nf1 Ne4 10.f3 Nc5 11.c4 Qg5 12.Rg1 dc4 (12...e4 13.cd5 Bh2 14.Nh2 Qg3 15.Kf1–+) 13.Nc4 (13.Bc4 h3 14.g3 Ne6+=) 13...ab5 14.Nd6 cd6 15.d4 Na4 16.e4 (16.Qb3 Nc5 17.Ra8 Nb3 18.Rb8 Ke7 19.Rh8 Nc1–+) 16...Qd8–+ 17.Be3 Nc3 18.Qc1 Ne2 19.Ke2 Nc6 (19...Ra4 20.Qb2 Qf6 21.d5–/+) 20.d5 (20.Ra8 Qa8 21.d5 Ne7–/+) 20...Ra1 21.Qa1 Na5 22.Nd2 Nc4 23.Qa7 Ne3 24.Ke3 Qc8 25.Ke2 0-0 (25...h3 26.g4–/+) 26.Rb1 Qc7 27.g3 (27.Qf2 Qd8–/+) 27...hg3 (27...h3 28.Kd1 Rc8 29.Qf2–+) 28.hg3–/+ Rc8 29.g4 g6 (29...Kf8 30.Qe3–/+) 30.Qe3 Kg7 31.Kf1 (31.Rh1!? Rh8 32.Rh8 Kh8 33.g5–/+) 31...Qc5–+ 32.Qb3 (32.Ke2 b4–+) 32...Rh8 (32...Qd4 33.Qd1–+) 33.Kg2 Ra8 34.Rb2 Ra3 35.Qd1 Rc3 (35...Qd4 36.Qc1–+) 36.Nf1 (36.Qe1 Rc2 37.Rc2 Qc2–+) 36...b4 37.Rf2 Bb5 38.Ng3 Bd3 (38...b3 39.Rd2 Rc2 40.Kh3–+) 39.Qd2 Qf2 (39...f6!? 40.Ne2 Be2 41.Re2–+) 40.Kf2 Rc2 41.Ke3 Rd2 42.Kd2 Bc4 43.Kc2? (43.g5–+) 43...Kf6 44.Nh1 Kg5 (better is 44...Be2!? 45.Nf2–+) 45.Nf2 Be2 (45...f6 46.Kd2 Kf4 47.g5 fg5 48.Nh3 Kf3 49.Ng5 Kf4 50.Nf7 Ke4 51.Nh8–+) 46.Kb3 (46.Nh3 Kh4 47.Ng1 Bc4–+) 46...Kh4 (46...Kh4 47.f4 ef4–+; better is 46...Bf3 47.Kb4 Kf4 48.Ka5–+) 0–1. Norbeck,Ivar – Norberg,Jan, corr SSKK 2–97, 1987.

5.h4 0-0 6.Qe2 (6.Bb2 Bf5 (6...c5 7.Be2 Nbd7 8.Nh3 Qa5 9.h5 Qb4 10.Bc3+=) 7.Nf3 Nbd7 8.Be2 c5 9.d3 a6 10.0-0–/+; 6.Be2 Bf5 (6...a6 7.Bb2 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.Nf3–/+) 7.Bb2 Re8 8.Nf3 a6 9.Nc3 c5 10.ba6–/+; 6.Nc3 c5 (6...d4 7.Nce2 Bg4 8.Bb2 de3 9.de3 Qe7 10.Qb1–/+) 7.bc6 Nc6 8.Rb1 Re8 9.Bb2 d4 10.Nb5–/+) 6...a6 (6...Bg4 7.Qd3 Nbd7 8.Ba3 e4 9.Qb3 Nc5 10.Bc5–/+; 6...Bf5 7.d3 Bg4 8.f3 Be6 9.Bb2 c5 10.c4–/+) 7.Bb2 (7.Ba3 Bf5 8.Bd6 Qd6 9.Na3 c6 10.bc6–+) 7...Bg4 8.f3 (8.Qd3 Nbd7 9.f3 Be6 10.a5–+) 8...Be6 (8...Ne4 9.Qd3 Ng3 10.Rh2–+) 9.g3 (9.g4 ab5 10.ab5–/+) 9...Nbd7 10.Bh3 ab5 11.ab5 (11.Be6 fe6 12.Qb5 c6–+) 11...Ra1–+ 12.Ba1 Qa8 13.Bc3 Qa2 14.Qd1 Bh3 15.Nh3 d4! 16.ed4 ed4 17.Bd4 Qc4 18.Bf6?? (18.Be3 Bg3 19.Nf2–+) 18...Bg3 (18...Nf6?! 19.Kf2–/+) 19.Nf2 Re8 (19...Re8 20.Be5 Re5 21.Qe2 Qe2; 19...gf6?! 20.Nc3 Re8 21.Nce4–/+) 0–1. 2buddies – marekt, ChessWorld.net, 2016.

5.h4 a6 6.Bb2 ab5 7.Bb5 c6 8.Be2 Nbd7 9.Nf3 0-0 10.Nc3.

4.Nf3 Bd6–/+

5.Ba3–/+.

5.Bb2 e4 6.Nd4 c5 7.bc6 Nc6–/+.

5.e3 0-0 6.Nc3 e4 7.Nd4 c5 8.bc6 Nc6 9.Nc6 bc6 10.Be2 Be6 11.0-0 Qc7 12.h3 Rfb8 13.d4 Qe7 14.Bd2 Rb2 15.Rb1 Rb1 16.Qb1 Rb8 17.Qa2 Bc7 18.Re1 Qd6–+ 19.Kf1?? Qh2 20.f4 ef3! 21.Bf3 Bg3 22.Rb1 Rb1 23.Qb1 Ne4! 24.Ke2 Bc8 25.Be4 de4 26.Be1 Qg2 27.Kd1 Qh3 28.Bg3 Bg4 29.Kc1 Qg3 30.Qb7 Qe3 31.Kb2 h5 32.Qc6 Qd4 33.Qe4 Qe4 34.Ne4 h4 35.c4 Bf5 36.Nf2 g5 37.c5 g4 38.Nd1 g3 39.Ne3 h3 40.Nf5 g2 41.c6 g1Q 42.Ne7 Kf8 43.Nd5 h2 44.c7 Qg2 45.Kc3 Qh3 46.Kd4 h1Q 47.Nf4 Qa1 48.Kc5 Qe5 49.Kc6 Qhc3 50.Kb7 Qec7 51.Ka6 Qb6# (51...Q3c6#) 0–1. COMP – COMP, 2002.

5.e3 c5 6.d3–/+.

4.Nf3 e4

5.Nd4 c5 6.Nb3 Bd6–/+.

5.Ne5 c5 6.bc6 Nc6 7.Nc6 bc6 8.d4 Rb8 9.Bf4–/+ Rb2 10.Qc1 Qb6 11.Nc3 Rb4 12.e3 Qa5–+ 13.Qd2?? Rb2 14.Nd5 Qd5 15.Qc1 Qa5 16.c3 Rb3 17.Be2 Rc3 18.Qd2 Rc1! 19.Rc1 Bb4 20.Rc2 Bg4 21.f3 Bf5 22.0-0 Bd2 23.Rc5 Qb4 24.Rf5 Nd5 25.Rf2 0-0 26.Rd5 cd5 27.fe4 Be3! 28.Be3 Qe1 29.Bf1 Qe3 30.ed5 Rc8 31.h4 Rc2 32.Kh2 Qf2 33.Kh3 Qf1 34.h5 Rg2 35.d6 Qh1# 0–1. COMP – COMP, 2002.

5.Ne5 Bd6 6.Bb2 Qe7 7.d4 Nbd7 8.Nd7 Bd7 9.e3 0-0 10.Be2 a6 11.0-0 ab5 12.ab5 Ra1 13.Ba1 Ra8 14.Nc3 Bb4 15.Bb2 Qe8 16.Qb1 h6 17.Na2 Bd6 18.Nc3 c6 19.bc6 bc6 20.Ba1 Qc8 21.Qb6 Ng4 22.h3 Bh2 23.Kh1 Bc7 24.Qb2 Nh2 25.Rb1 Bh3 26.Qc1 Be6 27.Bb2 Qd8 28.Kg1 Qh4 29.g3 Bg3 30.fg3 Qg3 31.Kh1 Ng4 32.Bg4 Bg4 33.Qf1 Bf3 34.Qf3 ef3 35.e4 Qg2 0–1. COMP – COMP, 2002.

5.Ne5 Bd6 6.d4 Nbd7 7.Nd7 Bd7 8.e3–+.

3.Bb2 a6

4.a4 Nd7 5.Nf3 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.e3 Ngf6 9.Be2 e4 (9...0-0 10.0-0=+) 10.Nd4= Nb6 (10...0-0 11.0-0=) 11.0-0 Bd7 (11...Be5 12.Bc3=) 12.f4 (12.f3 0-0=) 12...Qe7 (12...c5 13.bc6 bc6=) 13.c4 (13.Nb3!?=) 13...Nc4 (13...dc4 14.Qc2–/+) 14.Bc4 dc4 15.Qc2 (15.Qe2 0-0=+) 15...Bg4 (15...0-0 16.Qc4 Ra8 17.Nc3=+) 16.Qc4=+ 0-0 17.Qc2 (17.Nc3 Rd8=+) 17...g6 (17...Ra8!? 18.Bb2 Rd8–/+) 18.Nc3= h6 19.Qb3 (19.Bb2 Rd8=+) 19...Be6 (19...Rd8!?=+) 20.Ne6= Qe6 (worse 20...fe6 21.Qc4+–) 21.Qe6 fe6 22.Nd1 Kf7 (22...Bb4 23.Nf2 Bd2 24.Bf6 Rf6 25.Ng4+=) 23.Nf2+– Rd8 (23...Ra8 24.Bf6 Kf6 25.Ne4 Kf5 26.Nc3+–) 24.Bf6 Kf6 25.Ne4 Ke7 (25...Kf5 26.d3+–) 26.Ra1 e5 27.g3 Ke6 (27...Bb4 28.Ra7 Bd2 29.Nd2 Rd2 30.fe5+–) 28.Ra7 Kf5 (28...Rb8 29.d3+–) 29.Nd6+– Rd6 30.Rb7 Rd2 31.Rc7 ef4 32.ef4 (32.Rc5 Kg4 33.ef4 Rb2+–) 32...Rb2+– 33.Rc5 Ke4 (33...Kg4 34.Kf1+–) 34.h3 (34.Kf1 Kf3 35.Rc3 Kg4+–) 34...Rb1 (34...Kf3 35.Rc3 Ke4 36.h4+–) 35.Kf2+– Rb2 36.Kf1 (36.Ke1 Kf3 37.f5 gf5 38.Rf5 Kg3+–) 36...Kf3 37.Rc3 Ke4 38.Rc6 Rb5 (better 38...Kf3!? 39.Ke1 Kg3 40.Rg6 Kf4+–) 39.Rg6+– Ke3 40.g4 (40.Rh6?! Rb1 41.Kg2 Rb2 42.Kg1 Rb1 43.Kh2 Rb2 44.Kh1 Rb1 45.Kg2 Rb2 46.Kf1 Rb1 47.Kg2=) 40...Kf3 41.Ke1 Ke3 42.Kd1 (42.Re6 Kf4 43.Rh6 Rb2+–) 42...Rd5 (42...Kf4 43.Rh6 Rb2 44.Ke1+–) 43.Kc2 h5 (43...Rc5 44.Kb3 Kf4 45.Rh6+–) 44.Rf6 (44.f5 Rd2 45.Kc3 Rh2 46.gh5 Rh3+–) 44...Rd2 45.Kc1 Rh2 46.gh5 Rh3 47.h6 Rh2 48.Kd1 Rh4? (better 48...Ke4+–) 49.Kc2+– Rh5 50.Kc3 Rh1 51.Kc4 Rh5 52.Kb4 (52.Kb3 Rb5 53.Kc3 Rh5+–) 52...Ke4 53.Kc3 Rh3 54.Kc4 Rh5 55.Kb4 Kf3 56.Kc4 (56.Kb3!? Ke4+–) 56...Ke4 57.Kc3 Rh4?? (57...Rh3 58.Kb2+–) 58.Kb4 (58.Kc2 Rh3+–) 58...Rh5 59.Kc4 Rh4?? (better 59...Ke3=) 60.Kc5+– Rh2 61.Kd6 Rb2 62.h7 Rh2 (62...Rb6 63.Kc7 Rf6 64.h8Q Rf4 65.Kd6+–) 63.Rf7 Rh4 64.Ke7 Kf3 65.f5 Rh3 (65...Kf4 66.f6 Ke5+–) 66.f6 Kf4 67.Rg7 Kf5 68.f7 Re3 69.Kf8 (better 69.Kd6 Rd3 70.Kc5 Rd8+–) 69...Ke4 70.h8Q Ra3 (70...Rf3 71.Rg4 Kd5 72.Qd4 Kc6 73.Rg6 Rf6 74.Rf6 Kc7 75.Qc5 Kb8 76.Rb6 Ka8 77.Qa5) 71.Qh4 Kd5 72.Rg5 Ke6 73.Qh6 Kd7 74.Rd5 Kc7 75.Qd6 Kc8 76.Rc5 Kb7 77.Rb5 Ka7 (77...Kc8 78.Rb8) 78.Qa3 1–0. Anonymous – lichess AI level 6, lichess.org, 2020.

4.ba6 Ra6 5.Be5 Nc6+=.

4.e3 ab5 5.Bb5 (5.Be5 Nd7 6.Bd4 b4=) 5...c6 6.Be2 Bd6 7.c4 (7.f4 Nd7+=) 7...Qb6 8.Qc2 Na6 9.cd5 (9.Qb3 Qb3 10.ab3 Nf6+=) 9...cd5 (9...Nb4!? 10.Qb3 Bf5+= (worse is 10...cd5 11.Nf3=)) 10.Nf3= f6 1.e4? (11.Nc3 Ne7 12.Bb5 Kd8+=) 11...d4?? (better is 11...Nb4 12.Qb3 de4–+) 12.d3 (12.Na3 Be6 13.Nc4 Qc7 14.Nd6 Qd6 15.Bb5 Kf7=) 12...Bd7 13.Ba3?? (better is 13.Nbd2+=) 13...Ba3–+ 14.Na3 Qb4 15.Nd2 Qa3 16.0-0 Rc8 17.Nc4 Qe7 18.Qb3 Nc5 19.Qb4 Rc7 20.Qb6 Rc6 21.Qb4 Ra6 (21...Be6 22.Rac1–+) 22.Rfc1 Ra4 (22...Re6 23.a4–+) 23.Qd2 (23.Qb6 Bc6 24.Na5 Nd7–+) 23...b5 24.Nb6 Ra7 25.Qb4? (25.Nd7 Nd7 (worse is 25...Qd7 26.Rc5 Ne7 27.Rb1+=; 25...Kd7 26.Qb4 Rc7 27.Qb5 Kd8 28.Rc4=; 25...Rd7?! 26.Qb4 Rc7 27.Qb5 Kf7 28.Bd1–+) 26.Qb2 Qd8–+) 25...Ne6 (25...Na4!? 26.Bh5 g6 27.Qe7 Ne7 28.Na4 Ra4 29.Bd1–+) 26.Qb3 Nh6 (26...Nf4 27.Qd1–+) 27.Nd5 (27.Nc8 Nc5 28.Bh5 g6 29.Ne7 Nb3 30.Ng6 Nc1 31.Nh8 Kf8 32.Rc1 Kg7–+ (32...Ra2?! 33.f4–+)) 27...Qd6 28.Bh5 g6 (28...Kd8 29.Be2–+) 29.Bf3? (29.Nf6 Kf7 30.Nd7 Qd7 31.Bd1–+) 29...0-0 30.Rc2 Ra3 31.Qb2 Rd3 32.Be2 Ra3 33.Bb5 Bb5 34.Qb5 Rb8 35.Rc6 (35.Nf6 Kf7 36.Qd5–+) 35...Qd8 (better is 35...Rb5 36.Rd6 Ra2–+) 36.Nf6+= Kf7 (better is 36...Kh8 37.Qe5 Ng7+=) 37.Qc4?? (better is 37.Qe5 Qf6 38.Qb8+=) 37...Qf6–+ (37...Kf6?! 38.Qe6 Kg7 39.Rd6=) 38.Rc7?? (38.Re6 Qe6 39.Qc7 Qe7 40.Qb8–+) 38...Kf8 (38...Kg8 39.Rc6 Re8 40.Qc1–+) 39.Rh7 (39.Rc6 Ng4 40.Qe6 Qf2 41.Kh1 Ra2 42.Rc8 Kg7 43.Qa2 Qa2–+) 39...Nf7 40.h3 (40.f4 Nf4 41.g3 Ne6–+) 40...Kg8 41.Qc1 (41.Rf7 Qf7 42.Qc1 Rba8–+) 41...Rc3 (41...Rc3 42.Qd2 Kh7–+) 0–1. Steingraeber,Barbara (2240) – Staats,Carsten (2315), remoteschach.de, 2002.

4.Be5 ab5 5.e3 Nf6 6.Bb5 Bd7 7.Bd7 Nbd7 8.Bc3 Bd6 9.Nf3 Ne4 10.0-0 Nc3 11.Nc3 0-0 12.Nd5 c6 13.Nc3 Ne5 14.Ne4 Nf3 15.Qf3 Be5 16.Rab1 Ra2 17.Rb7 Bf6 18.Nf6 gf6 19.Qc6 Qd2 20.c4 Qc3 21.c5 Ra1 22.Rbb1 Rb1 23.Rb1 Kg7 24.Qd5 Rb8 25.Rf1 Rc8 26.Qd4 Rc5 27.Qc3 Rc3 28.g3 Kg6 29.Kg2 Kg5 30.Kf3 h5 31.h4 Kf5 32.Rb1 Rc5 33.Rb7 Kg6 34.Re7 Rc6 35.Re4 Re6 36.Rf4 Re5 37.Kg2 Rf5 38.Rc4 Re5 39.Rc3 Re4 40.f3 Re5 41.f4 Re7 42.Kf3 f5 43.Rc6 Re6 44.Rc4 Kf6 45.e4 fe4 46.Re4 Re4 47.Ke4 Ke6 48.Kf3 f5 49.Ke3 Kd5 50.Kd3 Ke6 51.Kd4 Kd6 52.Kc4 Ke6 53.Kd4 Kd6 54.Kc4 Ke6 55.Kc5 Kf6 56.Kd5 Kg6 57.Ke6 Kh6 58.Kf5 Kg7 59.Kg5 Kh7 60.Kh5 Kg7 61.g4 Kf6 62.Kh6 Kf7 63.Kh7 Kf6 64.h5 Kf7 65.h6 Kf8 66.g5 Kf7 67.g6 Kf8 68.f5 Ke8 69.f6 Kf8 70.g7 Kf7 71.g8Q Kf6 72.Qf8 Kg5 73.Kg7 Kh5 74.h7 Kg5 75.h8R Kg4 76.Kf7 Kf5 77.Ke8 Ke6 78.Rh5 ½–½. aravind555 – kimjongeel, lichess.org, 2018.

4.a4 ab5 5.ab5 Ra1

6.Ba1 d4 7.Nf3 Bd6 8.e3 Bd7 9.Bc4 (9.ed4 e4 10.Ne5 Nf6+–) 9...Nf6 (9...de3!? 10.fe3 Qe7=) 10.ed4+– e4 11.Ne5 Be5? (better 11...0-0+–) 12.de5+– Ng4 (12...Bg4 13.f3 ef3 14.gf3+–) 13.e6 Be6 (13...Qg5 14.ed7 Nd7 15.Qe2+–) 14.Be6 fe6 (14...Nf6 15.Bf6 Qf6 16.Bd5+–) 15.Qg4 0-0 (15...Qd7+–) 16.Qg7 1–0. Anonymous – Anonymous, lichess.org, 2020.

6.Ba1 Bd6 7.Nf3 Qe7 8.e3 Nf6 9.c4 dc4 10.Bc4 c6 (10...Nbd7 11.d3=+) 11.0-0 (11.d4 e4 12.Ne5 0-0=) 11...0-0=+ 12.d4 e4 13.Ne5 Be6 14.Qb3 Bc4 15.Qc4 Rc8 16.h3 (16.Rd1 Qe8=) 16...Qe8 (16...Nbd7 17.Nd7 Qd7 18.Nc3=+) 17.Rc1 Be5 (better 17...Nbd7!?=+) 18.de5+– Nd5 19.Qe4 Nd7 20.Nd2 N7b6 21.Qd4 Qe7 22.Ne4 Nd7 (22...Rc7 23.bc6 bc6 24.Nd6+–) 23.Nd6+– Rb8 (23...Rc7!?+–) 24.bc6 bc6 25.Rc6 Rb1 26.Kh2 N5b6 (26...Nf8 27.Qd5 Ra1 28.Nf5+–) 27.Bb2 Rb2 (27...Qf8 28.Nf7! Qf7+–) 28.Qb2 Nd5 (28...h6+–) 29.Rc8 Nf8 30.Qb8 Qe5 31.f4 Qe7 32.Nf5 Qa3 33.Nd6 g6 (33...h5 34.Rf8 Kh7 35.Rh8 Kg6 36.Qb1 Qd3 37.Qd3 Kf6 38.Qf5 Ke7 39.Nc8) 34.Rf8 Kg7 35.Rf7 Kh6 36.Qf8 (36.Qf8 Kh5 37.Rh7) 1–0. onur604 (2055) – Abdjo (1975), lichess.org, 2020.

6.Ba1 Bf5 7.Be5 Nf6 8.e3 Nbd7 9.Bb2 Bb4 10.Nf3 0-0 11.c4 dc4 12.Bc4 Nb6 13.Bb3 Qd3 14.Bc3 Be7 15.Na3 Ba3 16.Ne5 Qb5 17.Nf7 Rf7 18.Bf7 Kf7 19.Bf6 gf6 20.Qh5 Ke7 21.Qh6 0–1. aravind555 – Rosich (1680), lichess.org, 2018.

3.Bb2 c6

4.a4 Bd6 5.Nf3 Nf6 6.Ne5 Qe7 7.Nf3 c5 (7...Bg4 8.e3+=) 8.e3 Bg4 (8...0-0 9.Be2+=) 9.Be2 0-0 10.0-0 Nbd7 (10...a6 11.Nc3+=) 11.d4 c4 12.Nc3 (12.Ba3 a6 13.Bd6 Qd6+=) 12...b6 (12...Rfe8 13.a5+=) 13.Nd2 Be2 14.Qe2 h6 (14...Bb4!?+=) 15.e4+/– de4 (15...Bb4 16.e5 Qe6 17.f4+–) 16.Nce4 Bf4? (better is 16...Rfc8+/–) 17.Ba3+– Be5 (17...Qe6 18.Bf8 Bd2 19.Nf6 Nf6 20.Qd2 Rf8+–) 18.Be7 (18.Be7 Bd4 19.Bf8 Ba1 20.Bg7 Kg7 21.Ra1+–) 1–0. GuestQWJK – gustavoxy, freechess.org, 2018.

4.a4 Nd7 5.e3 Ngf6 6.Nf3 Bd6 7.c4 0-0 8.cd5 cd5 9.Be2 a6 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Re8 13.Nc3 d4 14.Qb1?? (better 14.ed4 e4 15.Ne1=) 14...dc3-+ 15.dc3 Qb6 (15...Qc7 16.h3-+) 16.c4 Nc5 17.Rd1 Bg4 18.h3 Bh5 19.Kh1 Bg6 20.Qb2 h6 21.Nh4 Bh7 22.Bf3 (22.Nf3 Nfe4 23.Kg1 Nf2 24.Rd6 Nh3 25.gh3 Qd6-+) 22...Nfe4 (better 22...g5!? 23.Bc6 Rd8 24.Nf3 bc6 25.Ne5 Be5 26.Rd8 Qd8 27.Qe5 Qd1 28.Kh2-+) 23.Be4 Be4 24.f3 (24.Qe2 Qd8 25.Nf3 Qe7-+) 24...Bh7 (24...Bd3!? 25.Qc3 Qd8 26.g3-+) 25.e4 Be7 (25...Ra8 26.Nf5 Bf5 27.ef5-+) 26.Nf5 (26.Qe5 Ne6 27.Nf5 Bf5 28.ef5 Bf6-/+) 26...Bf5 (26...Bf8 27.Ng3-+) 27.ef5? (better 27.Qe5!? Ne6 28.ef5-/+) 27...Bf6 28.Qd2 e4 29.fe4 (29.Bf6 Qf6 30.fe4 Ne4 31.Qf4-+) 29...Ne4 30.Qd5 (30.c5 Qc5 31.Qd7 Rd8 32.Qd8 Bd8 33.Rd8 Kh7-+) 30...Ba1 (better 30...Rd8 31.Bf6 Rd5 32.Rd5 Nf6-+) 31.Ra1 Ng3 (31...Nf2 32.Kh2-+) 32.Kh2 Qf6 33.Rd1 (33.Rb1 Qf5 34.Rb3 Qd5 35.cd5 Ne4-+) 33...Nf5 34.Rf1 Qd6 (34...Qd6 35.Qd6 Nd6-+) 0-1. Jimito100 (2000) - Nehs18 (1955), Rated Bullet game, lichess.org, 2020.

4.bc6 Nc6=+ 5.e3 Nf6 6.Nf3 Bf5 (better is 6...Bd6!?=+) 7.Ne5+= Nb4 (7...Bd6 8.Bb5 Qb6 9.Na3+=) 8.d3 (8.Bb5!? Ke7 9.Ba4+/–) 8...Bd6+= 9.Nf3 0-0 10.Be2 b5 (10...Rc8 11.Nc3+=) 11.0-0 Qc7 (better is 11...Nc6+=) 12.h3?? (better is 12.Bf6 gf6 13.c3+–) 12...Nc2–/+ (< 12...Qc2 13.Bf6 gf6 14.Na3 Qd1 15.Rfd1+= (< 15.Bd1 Bd3 16.Re1 Bc4–/+; 15.Rad1?! a6=)) 13.e4? (better is 13.Nc3 Na1 14.Nb5–/+) 13...de4–+ (13...Na1?! 14.ef5 Nc2 15.Nc3–/+) 14.Bf6 (14.de4 Ne4 15.Nbd2 Na1 16.Ne4 Be4 17.Qa1–+) 14...gf6 (better is 14...ef3 15.Bf3 gf6 16.Ba8 Na1 17.Be4–+) 15.Nbd2?? (15.de4 Na1 16.ef5 a6–/+) 15...Na1 (15...ef3 16.Bf3 Na1 17.Ba8 Bd3 18.Qg4 Bg6 19.Be4–+) 16.Qa1?? (16.de4 Be6 17.Qa1–/+) 16...ed3 (better is 16...ef3!? 17.Bf3 Rae8 18.Qf6 Bd3 19.Qg5 Bg6 20.Qb5–+) 17.Bd1 Kg7 (17...Be5 18.Qb1–+) 18.Qd4 (18.Nd4 Bd7–+) 18...Bc5 (18...Rad8 19.Qb2–+) 19.Qh4 Rh8 (19...Rfe8 20.Bb3–+) 20.Nd4 Bd4 21.Qd4 Rad8 22.Qh4 Qc1 23.Bg4 Qf1 24.Nf1 Bg4 25.Qg4+/– Kf8 26.Nd2 f5? 27.Qb4 Kg8 28.Qb5 h6 29.Qf5 Kg7 30.Qg4 Kh7 31.Qf5 Kg7 32.Ne4 d2 33.Qf6 Kf8 34.Qd8 Kg7 35.Qf6 Kg8 36.Nd2 Rh7 37.Ne4 Rg7 38.Nd6 Rg6 39.Qf7 Kh8 40.Qg6 h5 41.Ne8 h4 42.Qg7 1–0. TIROLOCO – redant, Live Game Caissa's Web, 2004.

4.e3 Bd6 5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 e4 (7...Nf6 8.bc6 bc6 9.0-0=+) 8.Be2 (8.Bg7 ef3 9.Bh8 fg2 10.Rg1+–) 8...Nf6= 9.0-0 0-0 10.c4 a6 11.a4 Nbd7 12.g3 Be5 13.Be5 Ne5 14.Na3 Qb6 15.Qb3 Ned7 16.cd5 cd5 17.Rfb1 Nc5 18.Qd1 ab5 19.Rb5 Qc6 20.Nb1 Nfd7 21.Nc3 Nb6 22.Qb1 Rfd8?? (better is 22...Nc4=+) 23.Rb6+– Qc7 24.Rb2 d4 (24...Qa5+–) 25.Ne4 Ne4 26.Qe4 de3 27.de3 (< 27.Qe3 Ra4 28.Rab1 Rb8+–) 27...Qc6 28.Qc6 bc6 29.Bf3 (29…Ra6 30.Rb7+–) 1–0. valpa – Holodoc, HCL–B2125 playchess.de, 2003.

4.e3 Be7 5.c4 Nd7 6.Nf3 f6 7.Be2 Nh6 8.0-0 Nf5 9.d4 0-0 10.de5 fe5 11.Ne5 Ne5 12.Be5 Qd7 13.Nd2 dc4 14.Nc4 Bc5 15.Qd7 Bd7 16.bc6 bc6 17.Bg3 Rab8 18.Bb8 Rb8 19.Ne5 Be8 20.Bc4 Kh8 21.Rab1 Rd8 22.Rfd1 Rc8 23.Nf7 Kg8 24.Nd6 Kf8 25.Nc8 Bd7 26.Na7 Bc8 27.Nc8 Bd6 28.Nd6 Nd6 29.Rd6 Ke7 30.Re6 Kf7 31.Rb7 Kf8 32.Rc6 g6 33.Rc8 1–0. BeepBeepImAJeep (2580) – Avacyn (1610), lichess.org, 2016.

4.Be5!? Qe7 5.Bd4+=.

4.a4 cb5

5.ab5 a6 6.Be5 Nd7 7.Bd4 Rb8 (7...Ngf6 8.Nc3+/-) 8.e3 ab5?? (better 8...Ngf6+/-) 9.Bb5+- b6 (9...Ngf6 10.Be5 Qb6 11.Nc3+-) 10.Qh5 Ngf6 (10...Bb7 11.Nf3 Ngf6+-) 11.Qe5 Be7 12.Qb8 Ne4 (12...0-0 13.Qa7+-) 13.Bg7 (better 13.Bb6 Bd6 14.Qa8 Bc7 15.Bc7 Qc7+-) 13...Rg8 14.Qe5 f6 (14...Bb7 15.Nf3 Nd6 16.Bd7 Kd7+-) 15.Qh5 1-0. DEFFM – GuestDFHT, freechess.org, 2021.

5.ab5 f6 6.c4 (6.d4 e4=) 6...Be6 (6...dc4 7.e4 Be6 8.Qc2=+) 7.cd5= Bd5 8.e3 Qc7 9.Nf3 Bc4?? (9...Be6 10.e4=) 10.Be2 (better 10.Qc2+-) 10...Qc5 11.Nc3 Be2 12.Qe2 (worse 12.Ne2 Qb5 13.Bc3 Qd3=+) 12...Ne7 13.0-0 Nd5 14.Rfc1 Nc3 (better 14...Nd7!?+/-) 15.Rc3+- (15.Bc3 e4 16.Bf6 Qf5+- (16...ef3 17.Qf3 Qb5 18.Rab1 Qb1 19.Qh5 Qg6 20.Qe5 Kf7 21.Rc7 Nd7 22.Rd7 Be7 23.Re7 Kg8 24.Rg7 Qg7 25.Bg7+-); 15.dc3?! Qc7+=) 15...Qb6?! (15...Qd5 16.Rc8 Kf7 17.Ne5 fe5 18.Qh5 g6 19.Qe5 Qe5 20.Be5 Rg8+-) 16.Ba3 (16.Rc8 Kd7 17.Rac1 Ke6+-) 16...Ba3?? (16...Nd7 17.Bf8 Nf8 18.d4+/-) 17.Raa3 (better 17.Rc8 Ke7 18.Rh8+-) 17...0-0 18.Ra1 Nd7 19.Rca3 Nc5 20.d4 ed4 21.Nd4 Ne4 (21...a6!?+=) 22.Qa2+- Kh8 23.Ne6?? (better 23.Ra7 Rac8 24.Qa5 Qa5 25.R7a5+-) 23...Rfe8= 24.Nd4 Nc5 (24...Rf8 25.Ra7 Rac8 26.Qa5 Qa5 27.R7a5+-) 25.Qb2 (better 25.Ra7!? Ra7 26.Qa7+-) 25...Rad8 26.Ra7 Nd3? (better 26...Na6!+=) 27.Qb3 Nc5 28.Qb4 (28.Qf7 Rf8 29.Qa2 f5+/-) 28...Nd3? (28...Na6 29.Rb7 Qb7 (29...Nb4? 30.Rb6 Rd7 31.Nc6 Nc6 32.bc6+-) 30.Ra6 f5+=) 29.Qb1 Ne5 30.R7a2 Nc4 31.Rc2 Ne5 32.Raa2 Rc8 33.Rc8 Rc8 34.Rc2 h6?? (better 34...Qd8+/-) 35.Rc8 Qd8 36.Rd8 1-0. Jimito100 (1970) - chiefsamotren (2035), Rated Bullet game, lichess.org, 2020.

4.e3 cb5

5.Be5 a6 A) 6.Be2 Nc6 7.Bb2 Nf6 8.Nf3 Bd6 9.0-0 0-0 10.Nd4 Re8=; B) 6.Bf4 Be7 7.Nf3 Nf6 8.Be2 0-0 9.0-0 Nc6 10.Re1 Re8=; C) 6.Nf3 Nc6 7.Bf4 Nf6 8.Be2 Bd6 9.Bd6 Qd6 10.0-0 0-0=.

5.Nf3 Bd7 6.Ne5+= Qb6 (6...a6 7.Be2 (7.f4+= Nf6 8.Bd3 Be7 9.Nd7 Qd7 10.0-0 0-0=) 7...Bf5 8.Bd3 Bd3 9.Nd3 Nd7 10.Bd4 Ngf6+=; 6...Bc6 7.Be2 Nf6 8.Bd4 Bd6 9.f4 0-0 10.0-0 Ne4+=) 7.Bd4 (7.Nc3 Nf6 8.Nd7 Nbd7 9.Bb5 Bd6+/– 10.Rb1 Qc7+–) 7...Qe6 8.Nc3 (8.Be2+/– b4 9.a3 Nf6 10.Nd7 Nbd7+=) 8...Nc6 (8...b4!? 9.Nb5 (9.Nd7 Qd7+= 10.Bb5 Nc6+/–) 9...Bb5 10.Bb5 Nc6+/–; 8...a6 9.Be2 Nf6 10.Nd3 Be7+/–) 9.Nb5+– Nd4?? (better is 9...Kd8 10.Nd7 Qd7+–) 10.Nc7 (10.ed4?! Kd8 11.Be2 Bb5 12.Bb5 f6+/–) 10...Kd8 (10...Ke7 11.ed4 Qd6 12.Na8+–) 11.Ne6 Ne6 (11...Be6 12.ed4 Bd6 13.Rb1+–) 12.Nf7 Ke7 13.Nh8 Nf6 (13...g6 14.Qb1 Bg7 15.Qb7+–) 14.Qb1 Bc6 (14...g6 15.Qb7 Rc8 16.Bb5+–) 15.Bb5 Nd8 16.c4 dc4 17.Qb4 Kd7 (17...Ke8 18.Bc6 bc6 19.Qc4+–) 18.Bc6 Nc6 19.Qb7 Kd6 20.Qa8 (20.Qa8 Nd7 21.Nf7 Kc7 22.Rb1+–) 1–0. pierre – gilchristsak, internet, 2008.

5.Nf3 e4!? 6.Bb5 Bd7= 7.Nd4 Nf6 8.0-0 Bd6 9.Bd7 Qd7 10.f3 Qc7=.

4.Be5 cb5

5.e3 b4 6.Nf3=.

5.e3 Nc6 6.Bb5 1–0. Van Esbroeck,Dirk – Alonso,Ivan, SF–2009–0-00032, 2009.

5.e3 f6 6.Bb5+/- Bd7 7.Bd7 Qd7 8.Bd4 Nc6 9.Ne2 Nd4 10.Nd4 Bc5 11.Qh5 g6 12.Qh4 0-0-0 13.Nb3 Be7 14.Nc3 f5 15.Qd4 Nf6? (better 15...b6!?+/-) 16.Qa7+- Ne4 (16...Qd6 17.Qa8 Qb8 18.Qa4+-) 17.Na5 (17.Na5 Qc7 18.Rb1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Nf6 6.Bb5+= Bd7 (6...Nc6 7.Nf3+=) 7.a4 (7.Nc3 Bb5 8.Nb5 Na6+/–) 7...Bc5 (7...Nc6 8.Nf3+=) 8.Qf3 (8.Nc3 Bb5 9.Bf6 Qf6 10.ab5 d4+/–) 8...Be7 9.Nc3 0-0 (9...Nc6!? 10.Bf6 Bf6 11.Qd5 Bc3 12.dc3 Qe7+/–) 10.Nd5+– Nd5 11.Qd5 Nc6 12.Bc6 Bc6 13.Qd4?? Qd4–+ 14.ed4 Bg2 15.0-0-0 Bh1 16.Nh3 Bg2 17.Nf4 Bf3 18.Rg1 f6 19.Bc7 Rac8 20.Ne6 Rfe8 21.Rg7 Kh8 22.Rg3 Bd5 23.Be5 Be6 24.Bf6 Bf6 25.Rf3 Rf8 26.Rc3 Rc3 27.dc3 Bg4 28.Kb2 Be7 29.Kb3 Be6 30.c4 Rc8 31.c3 Bc4 32.Kc2 a6 33.a5 Rf8 34.Kd2 Rf2 35.Ke3 Rh2 36.Ke4 Rh3 37.d5 Bd5 38.Kd5 Rc3 39.Kd4 Rc1 40.Kd5 Bd8 41.Ke5 Ba5 42.Kf5 h5 43.Kg5 Rh1 44.Kf5 h4 45.Kf4 h3 46.Kg4 Bc7 47.Kf3 h2 48.Kg2 Rg1 49.Kf2 h1Q (50.Ke3 Rg3 51.Kd4 b6 52.Kc4 Qe4) 0–1. manofsteel2 – demonlord, Live Game Caissa's Web, 2005.

3.Bb2 d4

4.a4 f5 5.e3 c5 6.Nf3 e4 7.Nd4 (better 7.Ne5 Nh6 8.a5+=) 7...cd4-/+ 8.Bd4 Nf6 9.Be2 Be7 10.0-0 0-0 11.c4 (11.Bc4 Kh8-/+) 11...Kh8 (11...Qc7 12.a5-+) 12.f3 Be6 13.fe4 Ne4 14.Nc3 Bf6 15.Bf6 Nf6 (15...gf6?! 16.Nb1=) 16.Bf3 Qc7 17.Nd5 Bd5 (17...Qc4 18.Nf6 a6 19.Nh5 (19.Bb7?! Ra7 20.Ne4 ab5+=) 19...ab5 20.ab5 Ra1 21.Qa1+-) 18.Bd5 Nd5 19.cd5 Nd7 20.Qb3 Qd6 21.Rac1 Rac8 (21...Rae8 22.a5-+) 22.Rc3 (better 22.Rc8 Rc8 23.Rf5-/+) 22...Nc5?? (22...Rc3 23.Qc3 Qd5 24.Rf4-+) 23.Qa2? (23.Qc2 f4 24.d4 fe3 A) 25.dc5? Rf1 26.Kf1 Rf8 (26...Qd5?! 27.Re3 Rf8 28.Kg1=) 27.Ke1 Qf6 28.Re3 Qf1 29.Kd2 Rf2 30.Kc3 Rc2 31.Kc2 Qc4 32.Kb2 Qb4 33.Rb3 Qc5-+; B) 25.Rf8 Rf8 26.Rc5=+ (worse 26.dc5 Qe5 27.h3 e2 28.Qe2 Qe2-+)) 23...Ne4-+ 24.Rd3 (24.Rc8 Rc8 25.Rf5 Rc1 26.Rf1 Rf1 27.Kf1 Qh2-+) 24...h6 25.Rd4 Rce8 26.Rf4 Kh7 27.Qc2 g5 (27...Rc8!? 28.Qb2-+) 28.Rf3 Qg6 29.Qb3 Nd6 30.e4?? (better 30.Rf1-/+) 30...fe4-+ (30...Re4?! 31.Re4 Ne4 32.Qb4 Qb6 33.Kf1-+) 31.Re3 (31.Rf8 Rf8 32.h3 g4 33.hg4 Qg4-+) 31...Rf4 (31...Qf6 32.h4 Qd4 33.hg5-+) 32.Qc2 (32.Re1-+) 32...Ref8 (better 32...Qf6 33.Qc1 Qd4 34.h3-+) 33.h3 Qf6 (33...Rf1 34.Kh2-+) 34.Rde4 Rf1 (34...Ne4 35.Re4 Kg7 36.Rf4 Qb6 37.Kh2 Rf4 38.Qc3 Kf7 39.Qe5-+) 35.Kh2 Ne4 36.Qe4 Kg7 0-1. biktimiroff (1945) - kid39 (2140), Hourly Bullet Arena, lichess.org, 2020.

4.a4 g5 5.e4 g4 6.Ne2 Nf6 7.Ng3 Bh6 8.Be2 Nbd7 9.0-0 Nc5 10.d3 c6 11.c4 Bf4 12.Ba3 Na4 13.Bb4 cb5 14.cb5 Nb6 15.Ba5 Be6 16.Na3 h5 17.Nc4 Bc4 18.dc4 Qe7 19.Bb6 0-0 20.Ra7 Ra7 21.Ba7 Qd6 22.Nf5 Qe6 23.b6 Ne4 24.Nd4 ed4 25.Qd4 Qe5 26.Qe5 Be5 27.Bd3 Nd2 28.Re1 Bc3 29.Re5 Be5 0–1. A_VB – rinda (1615), lichess.org, 2018.

4.c3 Bc5 5.cd4 Bd4 6.Nc3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 c6 (better 9...f6!?=) 10.e3+/- Bc3 11.Bc3 (11.dc3?! Ne7=) 11...f6 12.Nf3 (12.Be5!? Nd7 13.Bg3+/-) 12...Ne7 13.Bc4 (13.d4 ed4 14.Bd4+=) 13...Nd5 (13...cb5 14.Bb5 Bd7 15.Be2+=) 14.Qa2 (14.Be5!? Bg4 15.Bb8 Bf3 16.Ba7 Bg2 17.Rg1+-) 14...Nc3 (14...Bg4 15.Bb2=) 15.dc3+= c5 (15...Bf5 16.0-0+=) 16.Bf7 Kf8 17.0-0 Qe7 (17...g6 18.Bd5+/-) 18.Bc4 (18.Bd5 Qc7+/-) 18...b6 (18...g6 19.Qa7 Qc7 20.Rd1+=) 19.Bd5 Nd7 20.Rd1 e4? (20...g6 21.Qa7 Kg7 22.Bc6+-) 21.Nd2 (21.Qa8 Qe8 22.Be4 Ke7+-) 21...f5 (21...g6 22.Qa7 f5 23.Nc4+-) 22.Nc4 (better 22.Qa8 Qd8 23.Be6+-) 22...Ne5?? (22...g6+-) 23.Ne5 (better 23.Qa8!? Qc7 24.Ne5 Ke7 25.Nc6 Kf6+-) 23...Qe5 24.Bc6 (better 24.Qa7!? Qe7 25.Qb8 g6 26.Qc8 Kg7+-) 24...Ke7? (24...Qc7 25.Qe2+/-) 25.c4 (better 25.Qa7 Kf6 26.Qb6+-) 25...Rd8?? (better 25...Qc7+/-) 26.Qa7+- Bd7 27.Rd7 Rd7 28.Qd7 Kf6 29.g3 (better 29.Qd8 Qe7 30.Qb6+-) 29...Qc3 (29...Qe7+-) 30.Qd6 (30.Qd8 Kf7 31.Be8 Ke6 32.Qd5 Kf6 33.Qd6 Kg5 34.h4 Kg4 35.Qf4 Kh3 36.Qf5) 30...Kg5 31.Qf4 (31.h4 Kg4 32.Qf4 Kh5 33.Qg5) 31...Kg6 (31...Kf6 32.Qh4 Kf7+-) 32.h4 (32.Be8 Kf6 33.Qd6 Kg5 34.h4 Kg4 35.Qf4 Kh3 36.Qf5) 32...Qc4 (32...h5 33.Qg5 Kf7 34.Bd5 Ke8 35.Qg6 Ke7 36.Qf7 Kd8 37.Qf8 Kd7 38.Bc6 Ke6 39.Qe8 Kf6 40.Bd5 Qa1 41.Kg2 Qh1 42.Kh1 g5 43.Qf7 Ke5 44.Qe6) 33.g4 Qc1 34.Kg2 fg4 (34...Qf1 35.Kf1 Kf7 36.Qc7 Kf6 37.g5 Ke6 38.Qd7 Ke5 39.Qd5) 35.Qg4 (35.Be8) 35...Kf7 (35...Kf6 36.Qg5 Ke6 37.Qd5 Kf6 38.Qd8 Ke6 39.Bd5 Ke5 40.Qd7 Qh1 41.Kh1 c4 42.Qe6) 36.Be4 (36.Qd7 Kf6 37.Bd5 Qf1 38.Kf1 g6 39.Qf7 Ke5 40.Qe6) 36...c4 (36...Qd2 37.Qf5 Ke7+-) 37.Qf5 (37.Qd7 Kf6 38.Qd8 Ke6 39.Bd5 Ke5 40.f4 Kf5 41.Qg5) 37...Ke7 38.Qd5 (38.Qe5 Kf8 39.Qd6 Kf7 40.Qd7 Kf6 41.Qd8 Ke6 42.Bd5 Ke5 43.f4 Kf5 44.Qg5) 38...c3 (38...Qc3 39.Qb7 Kf8 40.Qc8 Ke7 41.Qc7 Ke6 42.Qb6 Ke7 43.Qc5 Ke6 44.Qd5 Ke7+-) 39.Qc6 (39.Qe5 Kf7 40.Bd5 Kf8 41.Qe6 Qh1 42.Kh1 c2 43.Qf7) 39...Qb2 (39...Qd1 40.Bf5 Qh5 41.Qd7 Kf8 42.Qd8 Kf7+-) 40.Qb6 (40.Qc7 Ke6 41.Bh7 Qf2 42.Kf2 g5 43.Bg8 Kf5 44.Qd7 Kg6 45.Qf7 Kh6 46.Qh7) 40...c2 (40...Qb4 41.Qc7 Kf6 42.Qd8 Qe7 43.Qd4 Kf7+-) 41.Qc7 (41.Qc5 Kd7 42.Bc6 Kc7 43.Bd5 Kd7 44.Qc6 Kd8 45.Qa8 Ke7 46.Qb7 Kd6 47.Qc6 Ke7 48.Qc7 Ke8 49.Bc6 Kf8 50.Qd8 Kf7 51.Bd5 Kg6 52.Qg5) 41...Kf6 42.Qc2 (42.Qd8 Ke6 43.Bd5 Ke5 44.f4 Kf5 45.Qg5) 42...Qc2 (42...Qb5 43.Bh7 Qh5+-) 43.Bc2 Ke7 44.Bd3 (better 44.e4 Kd6+-) 44...g6 (44...h6+-) 45.Kf3 Kd6 46.Ke4 (46.Bg6 hg6 47.Kf4 Kc5+-) 46...Kc5 (46...Ke6 47.Kf4 Kd6 48.Kg5+-) 47.Ke5 h6 48.e4 g5. Jimito100 (2035) - aleksei141 (2070), Rated Bullet game, lichess.org, 2020.

4.c3 Qd5 5.Qa4 (5.Qb3 Qb3 6.ab3 dc3 7.Nc3 Bd6+=) 5...Bd7 (5...c5=) 6.c4 (6.cd4!? ed4 7.e3 de3 8.fe3+=) 6...Qe4 (6...Qe6 7.Qb3+=) 7.Nf3 (7.Ba3 Nf6=) 7...Na6 8.d3 (8.Qd1 Nc5 9.d3 Qf5–/+) 8...Qf4 (8...Qf5 9.Qc2 Bb4 10.Nbd2+=) 9.Nbd2 (9.Qc2 Nc5=) 9...Nc5+= 10.Qc2 a6 (10...Nf6 11.g3 Qf5 12.Bg2=) 11.g3= Qf5 12.Nh4 (12.e3 de3 13.fe3 A) worse is 13...ab5 14.e4 (worse is 14.Be5 bc4 15.Qc4 Nf6=) 14...Qe6 15.Ne5+=; B) 13...Bd6=) 12...Qg4 (12...Qh5 13.Bg2 Nf6 14.Nb3 ab5 15.Nc5 Bc5 16.cb5 Bb4 17.Kf1+=) 13.Bg2= ab5 14.0-0 Be7 (14...Nf6=) 15.Ndf3 (better is 15.Nb3 Na4 16.Bb7=) 15...f6–/+ 16.Nd2 (better is 16.h3!? Qe6 17.cb5 Bb5 18.Nd2–/+) 16...Qe2–+ 17.Bf3? (17.Rfe1 Qd3 18.Qc1–+) 17...Qd3 18.Qd1 h6 (better is 18...bc4 19.Bh5 g6–+) 19.Be2+– Qh7 20.Bh5 g6 (20...Kd8 21.Bg6 bc4 22.Nc4 Be6 23.Bh7 Rh7+–) 21.Bg6 Qg6 (21...Kf8 22.Bh7 Rh7 23.f4 bc4 24.Nc4+–) 22.Ng6 Rh7 23.Ne7 Re7 (23...Ke7 24.cb5 Ne6 25.Qe2+–) 24.Qh5 (better is 24.Bd4!? Ne6 25.Qh5 Kf8+–) 24...Kf8 25.Bd4! (25.Bd4 Be8 26.Qf3 (26.Bc5?! Bh5 27.cb5 Kg7 28.Be7 Ne7+–) 26...ed4 27.Qd5+–) 1–0. queensservant (1775) – ovid7 (1800), gameknot.com, 2014.

4.c4 a6 5.Nf3 Qd6 6.Ba3 Qf6 7.Bf8 Kf8 8.Na3 ab5 9.Nb5 Na6 10.d3 Bd7 11.a4 Nh6 12.g3 Bg4 13.Bg2 Bd7 14.0-0 Bc6 15.Qb3 g5 16.Qa3 Kg7 17.h4 g4 18.Ng5 Bg2 19.Kg2 c6 20.Nd6 c5 1–0. Abdullaevich (1755) – Athosberg, lichess.org, 2018.

4.c4 Bb4 5.a3 Ba5 6.a4 b6 7.e3 c5 8.Nf3 Qd6 9.Be2 Bb7 10.0-0 Nd7 11.d3 Ngf6 12.e4 Bc8 13.Nbd2 Nf8 14.Nb3 Bb4 15.Ba3 Bc3 16.Rb1 Ng6 17.Bb2 Bb4 18.Ba3 Bc3 19.Bb2 Nd7 20.Bc3 dc3 21.Rc1 Nf4 22.Rc3 Ne6 23.Rc1 Ndf8 24.Nh4 Nd4 25.Nd4 Qd4 26.Nf5 Bf5 27.ef5 Rd8 28.Qc2 Qf4 29.Bf3 Nd7 30.Be4 Nf6 31.g3 Qg4 32.f3 Qh3 33.Qg2 Qg2 34.Kg2 Ne4 35.fe4 Rd3 36.Rf3 Rd4 37.Re3 0-0 38.Kf3 f6 39.h3 Rfd8 40.Rcc3 Rd1 41.h4 R8d4 42.Kg4 Ra1 43.Ra3 Rc1 44.a5 Rcc4 45.ab6 ab6 46.Ra8 Kf7 47.Rb8 Re4 48.Re4 Re4 49.Kf3 Rb4 50.Rb6 c4 51.Rb8 c3 52.Ke3 Rb3 53.Kd3 Ke7 54.b6 e4 55.Kc2 Rb5 56.Kc3 Kd6 57.Kd4 Rb4 58.Ke3 Kc6 59.b7 Kd5 60.Rd8 Kc4 61.b8Q Rb8 62.Rb8 Kd5 63.Re8 1–0. A_VB – nou9n, lichess.org, 2018.

4.c4 c5 5.e4 de3 (5...Nf6 6.Nf3+=) 6.fe3 (6.de3 Qd1 7.Kd1 Bd6+=) 6...Qh4 (6...Nd7 7.Be2+=) 7.g3= Qe4 (7...Qe7 8.Bg2=) 8.Nf3 Bg4 (8...Bd6 9.Nc3 Qg6 10.d4 cd4 11.ed4 ed4 12.Nd4=) 9.Be2+= Nf6 (9...Nd7 10.d3 Qf5 11.h3 Bf3 12.Bf3+=) 10.Nc3 (10.h3 Be6 11.Be5 Nbd7+/–) 10...Qf5+= 11.Nh4 (11.Ne5 Be2 12.Ne2 Bd6+=) 11...Qd7 (11...Be2 12.Nf5 Bd1 13.Rd1=) 12.Bg4 Qg4 (12...Ng4 13.Nd5 Bd6+=) 13.Qg4+/– Ng4 14.Nd5 Kd8 15.h3 Nf6 16.Nf6 gf6 17.0-0 (17.Rf1 Nd7+/–) 17...Nd7 18.d4 (18.Nf5 a6 19.ba6 Ra6+/–) 18...Rg8 (18...cd4 19.ed4 Rc8 20.Rac1+/–) 19.Kg2 (19.Nf5 a6+/–) 19...cd4+= 20.ed4 Rc8 21.Rac1 (21.Rac1 Nb6 22.de5 fe5 23.Be5 (worse is 23.Rf7 Nc4 24.Rb1 Nd6 25.Rh7 Rc2 26.Kf3 e4 27.Kf4 Rf2 28.Ke3 Rh2+=) 23...Nc4 24.Rcd1 Ke7 25.Rfe1+/–) 1–0. Wantoch_Rekowski,Jacek – Roczniak,Jan, corr Poland, 1993.

4.c4 Bc5 5.e3+=.

4.c4 c6 5.Nf3 cb5 6.cb5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Qe7 10.e3 Bd7 11.Be2 de3 12.de3 Nf6 13.Ne5 Qb4 14.Nc3 Bd6 15.Nd7 Nbd7 16.0-0 0-0 17.Nd5 Nd5 18.Qd5 Nf6 19.Qb7 Qh4 20.g3 Qh6 21.Bf3 Rb8 22.Qc6 Bf8 23.Qc4 g6 24.Bf6 Rb6 25.Bd4 Be7 26.Bb6 1–0. axtur777 – Ivan2555, lichess.org, 2019.

4.c4 e4 5.e3 d3 6.f3 f5 (6...Be6 7.Nc3+=) 7.fe4= Qh4 (7...fe4? 8.Qh5 Ke7 9.Qh4 Nf6 10.Bf6 gf6 11.Qe4 Be6 12.Qb7+–) 8.g3 Qe4 9.Qf3 (9.Nf3 Be6=) 9...Ne7 (better is 9...Qc4 10.Na3 Qb4+=) 10.Qe4+= fe4 11.Nc3 Bf5 12.Bg2 Nd7 13.Be4 Nc5 14.Bf5 Nf5 15.Nf3 Bd6 16.Nd5 (16.e4 Nh6+/–) 16...Rf8 17.0-0 c6 18.Nf4 cb5 19.cb5 Ne4 (better is 19...Rc8!?+/–) 20.Nd3+– Be7 (20...Rd8 21.g4 Bb8 22.Nde5 (worse is 22.gf5 Rd3 23.Rac1 Nd2 24.Bg7 Rf7+/–) 22...Nd2 23.gf5 Nf1 24.Rf1 Rf5 25.e4 Be5 26.Be5+– (26.ef5?! Bb2 27.Ng5 Rd5=; 26.Ne5?! Rf1 27.Kf1 Rd2+/–)) 21.Nf4 Rc8 22.a4 (better is 22.Rac1!? Rc1 23.Rc1+–) 22...Rc2+/– 23.Be5 Nd2 24.Nd2 Bc5?? (24...Rd2 25.Rae1 g6 26.Ne6+/–) 25.Rac1 (25.Ne6 Ne3 26.Rfe1 Rd2+–) 25...Ne3?? (better is 25...Be3 26.Kh1 Rc1 27.Rc1 Bd2 28.Rc8 Kf7 29.Rc7 Ke8+/–) 26.Rfe1 (26.Rc2 Nc2 27.Kh1 Bd4 28.Bd4 Nd4+–) 26...Kd7 (26...Kf7 27.Kh1 Re8 28.Nf3 Rc1 29.Rc1+–) 27.Kh1 (27.Nb3 Rc1 28.Rc1 Bd6 29.Bg7 Rg8+–) 27...g5 (27...Rf5 28.Nd3 Rc1 29.Rc1+–) 28.Nd3 (28.Ne4 Rc1 29.Rc1 Bb6 30.Ng5 Rf5+–) 28...Ba3 (28...Rc1 29.Rc1 Ba3 30.Rc7 Ke6 31.Bd4+– (31.Rb7?! Rd8 32.Bb8 Rd3 33.Ba7 Bb4 34.Be3 Re3+–; 31.Rh7?! Rd8 32.Rh6 Kf7+–)) 29.Rc2 (29.Re3?! Bc1 30.Nc1 Rc1 31.Kg2 g4+–) 29...Nc2 30.Rf1 (30.Re2!? Be7+–) 30...b6 (30...Rf1 31.Nf1 Ke6 32.Bc3+–) 31.Rf8 Bf8 32.Bd4 (better is 32.Ne4 h6 33.Kg2+–) 32...Nd4= 33.Kg2 g4 (better is 33...Bg7!?=) 34.Ne5+/– Kd6 35.Ng4 h6 36.Ne4 (36.Nf6 Ke6 37.Nfe4 Kd5+/–) 36...Ke6 (36...Kd5 37.Ngf6 Kc4 38.Kf2+=) 37.Kh3 Nf3 38.Nef2 h5 39.Ne3 Bc5 40.Nfd1 Kf7 ½–½. Valpa – Regicide, playchess.de, 2004.

4.c4 f5 5.d3 Nf6 6.Nf3 e4 7.Nfd2 Bb4 8.a3 e3 9.ab4 ed2 10.Qd2 0-0 11.g3 Ng4 12.Bg2 c6 13.0-0 cb5 14.c5 Nc6 15.Qf4 Be6 16.Ba3 a5 17.Nd2 g5 18.Bc6 gf4 19.Bb7 Ra7 20.Bf3 fg3 21.Bg4 fg4 22.fg3 Rf1 23.Rf1 Bd5 24.Ne4 Be4 25.de4 Qe7 26.Rf4 h5 27.Kf2 Qe5 28.c6 ab4 29.Bb4 Rc7 30.Rf5 Qe4 31.Rf8 Kg7 32.Rf4 Qe3 33.Kf1 Rc6 34.Bf8 Kg6 0–1. A_VB – const1962, lichess.org, 2018.

4.d3 a5 5.a4 (5.Nf3 Nd7+=) 5...Be6 (5...Nf6 6.g3+=) 6.g3 Bb4 (6...Nf6 7.Nf3=) 7.Nd2 (better is 7.c3!? dc3 8.Nc3=) 7...Nf6–/+ 8.Bg2 Bd5 (8...Nd5 9.Ngf3 Nd7 10.0-0+=) 9.Bd5 Qd5 10.Ngf3 e4 (10...c6!? 11.bc6 Nc6=) 11.de4+= (11.Nd4? e3 12.0-0 Bd2–+) 11...Qd7? (11...Ne4 12.0-0 Nc3 13.Bc3 Bc3 14.Ra3+/–) 12.Nd4 (better is 12.0-0 Bc3 13.Bc3 dc3 14.e5 cd2 15.ef6+–) 12...Ne4+/– 13.c3?? (13.N4f3 0-0 14.c3 Nd2 15.Qd2 (worse is 15.cb4 Nf3 16.ef3 Re8 17.Kf1 Qd1 18.Rd1 ab4+=) 15...Qd2 16.Nd2+/–) 13...Nc3–/+ 14.Bc3 Bc3 15.Rc1? (better is 15.e3 Ba1 16.Qa1–/+) 15...Bd4 (15...Qd4 16.Qc2 Qd2 17.Qd2 Bd2 18.Kd2–+) 16.0-0 0-0 17.Nf3 (17.Qc2 Bb6 18.Rfd1 Qe6–+) 17...Rd8 (better is 17...Bb6!? 18.Rc2–+) 18.Nd4 g6?? (better is 18...Qd4 19.Qd4 Rd4 20.Rc7 Nd7–+) 19.Nf3 c6 (19...Qe7 20.Qc2 c6 21.Rfd1 cb5 22.Rd8 Qd8 23.Qe4+=) 20.bc6 (20.Qb3!? Qc7 21.Rc3+/–) 20...Nc6= 21.Qb3 Qe7 22.e3 Nb4 23.Rfd1 Rd1 24.Rd1 Rd8 25.Rd8 Qd8 26.Ne5 Qe7 27.Nf3 h5 28.Qd1 ½–½. Hasler,Ueli (1710) – Tortoza,Carlos, CiF, 2006.

4.e3 a5 5.ed4 ed4 6.Bc4 (6.Nf3 Bg4+=) 6...Qe7 (6...c5 7.c3+=) 7.Qe2 c5 8.Nf3 (8.c3 dc3 9.Nc3 Nf6+=) 8...Bf5 (8...Qe2 9.Ke2 Nd7 10.Re1=) 9.0-0 (better is 9.c3!?+=) 9...Qe2+= (worse is 9...Bc2 10.Bf7 Kf7 11.Qc4 Kf6 12.Qc2+/–) 10.Be2 Bc2 11.Re1 d3?? (better is 11...Be7+=) 12.Bd3+– Kd8 (12...Be7 13.Bc2 Kf8 14.Nc3+–) 13.Bc2 c4 (13...Nd7 14.Ng5 Nh6 15.Be4+–) 14.Ne5 Nd7 (14...Nh6+–) 15.Nf7 Kc7 16.Nh8 Ngf6 17.Nf7 Nc5 (17...Bc5 18.Ng5 g6 19.Ne6 Kb6 20.d3 cd3 21.Bd3+–) 18.Be5 (18.Bf6 gf6 19.Nc3 b6+–) 18...Kb6 19.Na3 Re8 20.Nc4 Kb5 21.Nfd6 Bd6 22.Nd6 Kb4 23.a3 1–0. DEFFM – GuestWHYH, freechess.org, 2018.

4.e3 Bb4 5.Nf3 de3 6.fe3 f6 7.Ne5 fe5 8.Qh5 Kf8 9.Qe5 Qf6 10.Bc4 Qe5 11.Be5 Bd6 12.0-0 Ke7 13.Bg7 Be6 14.Be6 Ke6 15.Bh8 Nd7 16.c4 Nh6 17.Bb2 Bc5 18.Nc3 Bb4 19.d4 Bc3 20.Bc3 c5 21.d5 Ke7 22.e4 Rg8 23.e5 Ng4 24.e6 Nb6 25.Rf7 Ke8 26.d6 Nc4 27.d7 Kd8 28.h3 Nge5 29.Be5 Ne5 30.Rh7 Rf8 31.a4 b6 32.Rf1 Rg8 33.Rf5 Ng6 34.Rff7 Nf8 35.Rfg7 Nh7 36.Rg8 Ke7 37.d8Q Ke6 38.Qc8 Kd5 39.Rg5 Kc4 40.Qg4 Kb3 41.Qf3 Time forfeit 1–0. RichardSommer (2120) – Hamadchy (2010), lichess.org, 2020.

4.e3 Qd5 5.c4 Qc5 6.ed4 ed4 7.Nf3 h6 8.Bd4 Qd6 9.Be2 Nd7 10.0-0 Ngf6 11.Re1 Be7 12.Nc3 0-0 13.Qc2 Nb6 14.Ne4 Bf5 15.Nd6 Bc2 16.Nb7 Be4 17.Nc5 Bc5 18.Bc5 Rfe8 19.d3 Nbd7 20.Bd4 Bb7 21.a4 c5 22.Bc3 a6 23.Ne5 Ne5 24.Be5 Re5 25.ba6 Ba6 26.Bh5 Re1 27.Re1 Nh5 28.Re8 Re8 29.d4 Re1 0–1. aravind555 – Muhammad_Ather, lichess.org, 2019.

4.e3 Be6 5.Nf3 de3 6.fe3 Nf6 7.Ne5 Bd6 8.Be2 0-0 9.0-0 c6 10.a4 cb5 11.ab5 Qb6 12.c4 Be5 13.Be5 Qd8 14.Nc3 Nfd7 15.Bd4 f6 16.Nd5 Bd5 17.cd5 Ne5 18.Be5 fe5 19.Qc2 Qd5 20.Bc4 Qc4 21.Qc4 1–0. RichardSommer (2095) – sosalapius (1970), lichess.org, 2020.

4.e3 Bf5 5.ed4 ed4 6.d3 Qd7 7.a4 Bb4 8.Nd2 Nf6 9.Ngf3 Bg4 10.Be2 0-0 11.0-0 Re8 12.Bd4 Bd2 13.Bf6 gf6 14.Qd2 c6 15.c4 Rd8 16.Rfd1 a6 17.d4 cb5 18.ab5 Qf5 19.d5 Nd7 20.ba6 ba6 21.Nd4 Qh5 22.Bg4 Qg4 23.Qh6 Ne5 24.Qf6 Re8 25.Nf5 Ra7 26.Nh6 1–0. A_VB – fozgood, lichess.org, 2018.

4.e4 c6 5.g3 (5.c3!?=) 5...cb5 6.Bb5 Bd7 7.Qe2 a6 8.Bc4 b5 9.Bf7 (better is 9.Bb3!?=+) 9...Kf7–+ 10.Qh5 g6 11.Qe5 Bg7?? (better is 11...Nf6 12.Nf3 Nc6–+) 12.Qd5+– Be6?? (12...Ke8 13.Qa8 Qc7+=) 13.Qd8 (13.Qa8?! Qb6 14.Nf3 h6+/–) 13...Ne7 14.Qd6 Nbc6 15.Nf3 Rhd8 (15...Bc8 16.Ng5 Ke8+–) 16.Ng5 (16...Ke8 17.Qe6+–) 1–0. MasterofDisaster – raigod, Live Game Caissa's Web, 2004.

4.f3 Bb4 5.c3 dc3 6.Nc3 Bc3 (6...Nf6!?=+) 7.Bc3= f6 (7...Qg5!?=) 8.e4 Ne7 9.Bc4 c6 10.a4 c5 11.Ne2 b6 (11...Qd6!?+/–) 12.0-0 Ng6?? (12...Qd6 13.f4+–) 13.Qb3 (better is 13.Bd5+–) 13...Qe7 14.g3 (14.a5!? Nd7 15.Ng3+–) 14...Nd7 15.a5 Bb7 16.ab6 (16.a6 Bc8+–) 16...Nb6 17.Be6?? (better is 17.d3+/–) 17...c4–+ 18.Bc4 Nc4?? (better is 18...Qc5 19.d4 Qc4 20.Qc4 Nc4–+) 19.Qc4+– Rc8 20.Qb4 Qb4 21.Bb4 Rc2 (better is 21...Ra8+–) 22.Ra7 Rc7 23.b6 Rc4 24.Rb7 Rb4 25.Rb8 Kf7 26.Rh8 Nh8+/– 27.f4 Rb6 28.fe5 Rb2 29.ef6 Rd2 30.fg7 Kg7 31.Nf4 Nf7 32.Ne6 Kg8 33.Re1 Ne5+/– 34.Kf1 Nf3 35.Re2 Nh2 36.Ke1 Re2 37.Ke2 Ng4 38.Kf3 Nf6 39.Kf4 Kf7 40.Ng5 Kg6 41.e5 Nh5= 42.Kg4 Ng7? 43.e6 h6= 44.Nf3 Ne6 45.Kh4 h5 46.Ne5 Kh6 47.Nf7 Kg6 48.Nh8 Kh6 49.Nf7 Kg6 50.Ne5 Kh6 51.Nf3 Ng7 52.Kh3 Nf5 53.Kg2 Kg6 54.Kf2 Kh6 55.Kg2 Ng3 56.Kg3 Kg6 57.Kh4 Kh6 58.Ne5 Kg7 59.Kh5 (59.Nd7!?+=) ½–½. MasterofDisaster – hilde, Live Game Caissa's Web, 2004.

4.Nf3 d3 5.e4 (5.Be5 Nd7 6.Bg3 dc2 7.Qc2 Bd6+/-) 5...Nf6 (better 5...dc2!? 6.Qc2 f6+=) 6.Bd3+- Bc5 7.Be5 (7.Ne5 0-0+-) 7...Bf2 8.Kf2 Ng4 9.Ke1 Ne5 10.Ne5 Qh4 (10...Qd4 11.Qh5 Qa1 12.Qf7 Kd8 13.Qg7 Qb1 14.Kf2+-) 11.g3+- Qh3?? (11...Qf6 12.Nf7! Qf7 13.Rf1+-) 12.Nf7! Bg4 (12...Kf7 13.Qf3 Decoy) 13.Qg4! (13.Nh8?! Bd1 14.Kd1 Qh5 15.Be2 Qe5+-) 13...Qg4 14.Nh8 Qf3 (14...Nd7 15.Rf1+-) 15.Rf1 Qh5 16.Nc3 (better 16.Rf2+-) 16...Nc6 (16...Qh2 17.Ne2 Nd7+-) 17.bc6 bc6 18.Rf7 (better 18.Rf2+-) 18...0-0-0 (18...Qh2 19.Ne2 Rb8+-) 19.Ba6 Kb8 20.Rb1 Ka8 21.Bb7 Kb8 22.Bc6 Kc8 23.Bb7 Kb8 24.Bd5 Kc8 25.Be6 Rd7 26.Rf8 Qe8 27.Re8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nf3= Qd7 5.Ne5+/- Qb5 6.Bd4 Bc5? (better 6...c5 7.e4 Qb6+/-) 7.e3+- Qa5 (7...Qb4 8.a3 Qa5 9.Qf3+-) 8.Qh5 g6 (8...Nh6 9.Nd3 Bd4 10.Qa5 Ba1 11.Qc7 Na6+-) 9.Ng6 fg6 (9...Bd4 10.Qa5 Ba1 11.Nh8 Bh8 12.Qc7+-) 10.Qe5 Ne7 (10...Kd7 11.Bc5 Nc6 12.Qg7 Nge7 13.Be7 Ne7 14.Qh8+-) 11.Bc5 Nbc6 12.Qh8 Kd7 13.Be7 Ne7 14.Nc3 b6 (14...Qb4+-) 15.Qd4 Ke8 16.Nb5 Rb8 17.Nc7 Kf8 18.Qf6 Kg8 19.Ne8 Nf5 (19...Qe5 20.Bc4 Nd5 21.Bd5 Be6 22.Be6 Qe6 23.Qg7) 20.Bc4 Be6 (20...Qd5 21.Bd5 Be6 22.Be6) 21.Be6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nf3 Qe7 5.e3 (5.c3 dc3 6.Nc3 Nf6+/-) 5...de3+= 6.de3 Nf6 (6...e4 7.Nd4+=) 7.Be5+/- Bf5 (7...Be6 8.Nd4+/-) 8.Bd3 (8.Nc3 Nbd7 9.Bd4 Qa3+/-) 8...Bd3 9.Qd3 c6 (9...Nbd7 10.Bd4+/- (10.Bc7? Nc5 11.Qc4 Qc7-+)) 10.0-0 (10.Nc3 Nbd7 11.Bd4 cb5 12.Nb5 Rc8 13.Na7 Qb4 14.c3 Qc4+-) 10...cb5 (10...Nbd7 11.Bd4+-) 11.Qb5 (11.Bf6!? Qf6 12.Nc3 Na6+-) 11...Nc6 12.Bf6 Qf6 13.Qb7 Rd8 (better 13...Rb8 14.Qc7 Bc5+-) 14.Nd4! Nd4 15.ed4 Qd4 (15...Qe7 16.Qf3 Qd6+-) 16.Re1 Be7 (16...Qe4 17.Re4 Be7 18.Qe7) 17.Qe7 1-0. GuestFVNG – GuestLKQW, freechess.org, 2020.

4.Nf3 f5? 5.Ne5+- Bd6 (5...Nf6!?+-) 6.Bd4 Be5 7.Be5 Nf6 8.e3 0-0 (8...Nbd7 9.Bd4+-) 9.Bc4 Kh8 10.0-0 Nbd7 11.Bd4 b6 (11...Nb6 12.Bd3+-) 12.Qf3 Rb8 13.Qf5 Ng8 (13...Nc5 14.Qe5+-) 14.Qh5 Ndf6 (14...Ngf6 15.Qe2+-) 15.Qg5 Qe7 (15...Ne7 16.Nc3+-) 16.Nc3 Be6 17.Bd3 h6 (17...Nd5 18.Qh5 Ndf6 19.Qe5+-) 18.Qg3 Rbd8 (18...Qd7 19.Be5+-) 19.a4 (19.f4 Nh5 20.Qf2 Rd4 21.ed4 Nf4+-) 19...Nh5 20.Qg6 (20.Qe5 Bf5 21.Bf5 Qe5 22.Be5 Rf5+-) 20...Nhf6 (20...Ngf6 21.f4+-) 21.Ne2 (21.f4 Rd4 22.ed4 Qd7+-) 21...Bf7 (21...Qd6 22.Nf4 Ne7 23.Qg3+-) 22.Nf4 Bg6 (22...Qb4+-) 23.Ng6 Kh7 24.Nf8 Kh8 25.Ng6 Kh7 26.Ne7 g6 27.Ng6 Kg7 28.a5 Rd4 29.ed4 Nd5 30.ab6 ab6 31.Ra7 Ngf6 32.c4 Nf4 33.Rc7 Kg8 (33...Nd7 34.Rd7 Kf6 35.Nf4 h5 36.f3 h4 37.Re1 Kg5 38.Re5 Kf4 39.Rf7) 34.Ra1 Nd3 (34...Nd7 35.Rd7 Ng6 36.Bg6 Kf8 37.Ra8) 35.Ra8 Ne8 36.Re8 1-0. DEFFM – zukharrat, freechess.org, 2019.

4.Nf3 Bf5 5.Ne5+= Qe7 (better is 5...Nf6!?+=) 6.Bd4+– c6 (6...f6 7.Nf3+–) 7.e3 f6 8.bc6 (8.Nf3 Qd7+–) 8...Nc6? (8...fe5 9.Bc5 Qc5 10.cb7 Be4 11.ba8R Ba8 12.Qh5 g6+/–) 9.Nc6+– bc6 10.c4 (10.Nc3 Rd8 11.Qf3 Qd7+–) 10...c5 11.Bc3 Rd8 12.Be2 Qb7 13.0-0 Nh6 14.Bh5 g6? (better is 14...Nf7+–) 15.Bf6 gh5 (15...Bg7 16.Bf3 (16.Bd8?! gh5 17.Bg5 Ba1 18.Bh6 Rg8+–) 16...Qf7 17.Bd8 Ba1 18.Bg5+–) 16.Bh8 Qc7 (16...Bd3 17.Re1+–) 17.Qh5 Nf7 (17...Qf7 18.Qf7 Nf7 19.Bc3+–) 18.Qf5 (better is 18.Bf6 Bd3 19.Bd8 Qd8 20.Re1+–) 18...Nh6 (18...Nh8 19.Nc3 Ng6+–) 19.Qh5 (19.Qe4 Qe7 20.Nc3 Qe4 21.Ne4 Nf7+–) 19...Nf7 (19...Qf7 20.Qf7 Nf7 21.Bc3+–) 20.Nc3 Rd6 (20...Rd2 21.Nd5 Qc6 22.Nf6 Ke7 23.Rad1+–) 21.Nb5 (21.Nb5 Qd7 22.Nd6 Bd6 23.Qh7+–) 1–0. DEFFM – Grancanaria, freechess.org, 2017.

4.g3 a6 5.a4 ab5 6.ab5 c5?? 7.Na3 (better 7.Ra8 Nd7 8.d3+-) 7...Nf6 (7...Qd5 8.f3=) 8.Bg2+= Bd6 9.Nc4 Ra1 10.Qa1 (worse 10.Ba1 Be6 11.Nd6 Qd6=+) 10...0-0 11.Nf3 Be6 12.Nd6 (12.Nfe5!? Be5 13.Ne5+=) 12...Qd6= 13.0-0 Bc4 14.d3 (14.Qb1 Nbd7 15.d3 Bd5=) 14...Bb5=+ 15.c4 (15.Qa5 Bc6=+) 15...Bc6 Black intends e4 16.Ba3 (16.Qa3 Na6-/+) 16...Ng4 (16...Nbd7 17.Bb2-/+) 17.h3 (17.Bc1 Na6=+) 17...Nf6-/+ 18.Nh2 (18.Rb1 h6-/+) 18...Nbd7 (18...Bg2 19.Kg2 e4 20.Bc1-+) 19.Qb2 (19.Nf3!?-/+) 19...e4-+ 20.de4 (20.Qb3 Qe6-+) 20...Ne4 21.Rd1 (21.Qc2 Qe6-+) 21...Ne5 (better 21...Qe6 22.Nf3 Nc3 23.Re1 Qc4 24.e3 Bf3 25.Bf3-+) 22.e3? (better 22.Qc2 Ng5 23.h4 Bg2 24.Kg2 Qc6 25.f3-+) 22...Nc3 (better 22...Nc4 23.Qa2 Na3 24.Be4 Nb5 25.Bc6 Nc3-+ (25...bc6?! 26.Qc4-+)) 23.Rd4+= Nc4?? (better 23...Qc7 24.Qc3 cd4 25.ed4 Bg2 26.de5 Bh3 27.Bf8 Qc6= (27...Kf8? 28.g4+-)) 24.Rd6+- (24.Rc4?! Bg2 25.Qc3 Bh3+/-) 24...Nb2 25.Bb2 (25.Bc6 Nc4 26.Rd3 Ne2 27.Kf1 Ne5+-) 25...Nb5 (25...Bg2 26.Kg2 (worse 26.Bc3 Bh3 27.Rb6 Rd8+-) 26...Na4 27.Bc1+-) 26.Rd2 c4?! (26...Ra8+-) 27.Bc6 bc6 28.Rc2 Nd6 (28...Rc8 29.Rc4 f6 30.Nf3+-) 29.Ba3 Rd8 30.Bd6 Rd6 31.Rc4 Rd1 (31...Kf8 32.Nf3+-) 32.Kg2 h5 33.Rc6 g6 (33...Rd7 34.e4+-) 34.Nf3 Rd5 35.h4 Kg7 (35...Rd7 36.e4 Re7 37.e5+-) 36.e4 (36.Rc7 Kg8+-) 36...Rd8 (36...Rd7 37.e5 Rd5 38.Rf6+-) 37.Rc7 Re8 (37...Kg8 38.Ng5 f6 39.Nh7+-) 38.e5 (better 38.Ng5 Kg8+-) 38...Kf8 39.Kf1 Re6 40.Ng5 Kg7 (40...Re5 41.Rf7 Kg8+-) 41.Ne6 (41.Ne6 Kg8 42.Ng5 Kf8 43.Rf7 Ke8 44.e6 Kd8 45.Rd7 Ke8 46.Nh7 g5 47.Nf6 Kf8 48.Rf7) 1-0. Bushwacker (1880) - Knightslayer (1880), ChessWorld.net, 2010.

4.g3 c6 5.a4 c5 6.Bg2 Nd7 7.Bh3 Nb6 8.a5 Nc4 9.Qc1 Na5 10.Bc8 Qc8 11.Ra5 b6 12.Ra6 Nf6 13.Nf3 Bd6 14.d3 Qd7 15.Qg5 h6 16.Qg7 0-0-0 17.Qf6 Be7 18.Qe5 f6 19.Qe4 Rhe8 20.Qa8 Kc7 21.Ra7 Kd6 22.Rd7 Kd7 23.Qb7 Ke6 24.Qb6 Rd6 25.Qd6 Kd6 26.0-0 1–0. LVL100 – srgnick, lichess.org, 2018.

4.g3 Qd5 5.Nf3 Qb5 6.Qc1 Nc6 7.a4 (7.c3 Bg4–/+) 7...Qd5–+ 8.c4 Qd8 9.Ba3 (9.e3 Bg4 10.Bg2 Qf6–+) 9...Ba3 10.Ra3 e4 11.Ng1 Nf6 12.Bg2 0-0 13.d3 ed3 14.Rd3 Bf5 15.Rd2 Ne4 16.Rb2 Rb8 (16...Re8 17.Qf4 Qc8 18.Kf1–+) 17.Nf3 (17.Qf4!? Qg5 18.Qg5 Ng5 19.Nd2–/+) 17...Re8 18.0-0 Qf6 19.Qf4 (19.Re1 Nc5–+) 19...g5 (19...d3 20.Qc1–+) 20.Qc1 h6 (20...a6 21.e3–+) 21.Re1 (21.e3 Nc5 22.Rb5 Na4 23.Nd4 Nd4 24.ed4 Bd3–+) 21...Bg4 (21...g4 22.Nh4 Bd7 23.f3–+) 22.h3–/+ Bh5 23.Nh2?? (better is 23.Qc2–/+) 23...Qf2 24.Kh1 Ng3 0–1. Kleist,Werner (1665) – Augustat,Siegfried (1785), 17sen.Bad Sooden op Hessen, 2005.

4.g3 Bf5 5.Bg2+= c6 6.Qc1 (6.Nf3 Bd6+=) 6...Qc7 (worse is 6...cb5 7.Bb7 Nd7 8.Ba8 Qa8 9.f3=) 7.Na3 Nf6 8.Nf3 Bc5 9.0-0 0-0 10.c4 a6 11.d3 ab5 12.cb5 Nd5?? (better is 12...Nfd7+=) 13.Qc5+– Nd7 14.Qc1 Nc3 (14...Rfc8 15.bc6 bc6 16.Nc4+–) 15.Bc3 dc3 16.Qc3 Nb6 17.Rfc1 Rfe8 18.bc6 Nd5 19.Qc5 (19.Qb3 bc6 20.e4 Qd7+–) 19...bc6 20.Nc4 Rac8 (20...Bg4 21.Nfe5 Re5 22.Ne5 Qe5 23.e4+–) 21.Nd6 Qe7 (21...Be6 22.e4 Ne7 23.Ne5+–) 22.Nc8 (better is 22.Nf5!? Qc5 23.Rc5 Rcd8+–) 22...Qc5 23.Rc5 Rc8 (23...Bc8 24.a4+–) 24.e4 Be4 (24...Nb4 25.ef5 Nd3 26.Rc3+–) 25.de4 Ne7 26.Ne5 f6 27.Nc4 Rc7 28.a4 Kf7 29.a5 Ra7 30.a6 Ke6 31.Bh3 Kf7 32.Nd6 Kf8 33.Nc8 (better is 33.Rb1 g5 34.Rb8 Kg7+–) 33...Nc8 34.Bc8 h6 35.Bb7 (35.Bb7 Ke7 36.Rc6+–) 1–0. mic (2100) – mgoodrich (2240), net–chess.com, 2012.

4.g3 Nf6 5.Bg2 (5.Nf3 Qd5 6.c4 Qd6=+) 5...a6 6.ba6 (6.Nf3 Bd6–/+) 6...Na6 (6...Ra6 7.d3 Qd6–/+) 7.e4 (7.Nf3 Bd6–/+) 7...Be7 (7...Nb4 8.a3 Nc6 9.d3–/+) 8.a3 (8.Nf3 Qd6–/+) 8...b6 (8...Nc5 9.d3–+) 9.c4 (9.f4 Nc5 10.fe5=) 9...Bb7 (9...Nc5 10.d3–+) 10.Ne2 Be4 11.0-0 Bg2 12.Kg2 c5 13.f4 e4–+ 14.f5 0-0 15.Nf4 Qd7 16.g4 Qc6 17.Kg3 e3 18.de3 Ne4 19.Kh3 Rad8 20.Qf3?? Ng5–+ 21.Kg3 Nf3 22.Rf3 de3 23.Re3 Bd6 24.Nd2 Bf4 25.Kf4 g5! 26.fg6 fg6 27.Kg3 Nc7 28.Ne4 Ne6 29.Nf6 Kf7 30.Nh7 Nd4 31.Rf1 Kg7 32.Re7 Kh6 33.Nf8 Qd6–+ 34.Rf4 Qe7 (35.Bd4 cd4 36.Ng6 Kg6–+) 0–1. MasterofDisaster – GreyGoose, Live Game Caissa's Web, 2005.

4.a4 a6

5.e3 ab5 6.ab5 Ra1 7.Ba1 c6 8.bc6 Nc6 9.ed4 Nd4 10.Nf3 Bc5 11.Nd4 (11.Bd4 A) worse 11...Bd4 12.c3+/- (worse 12.Nd4 Qd4 13.Bb5 Kd8=); B) 11...ed4 12.Bb5 Bd7 13.Bd7 Qd7=) 11...ed4= 12.Bb5 Bd7 13.Bd7 Qd7 14.0-0 Ne7 15.Re1 0-0 16.Qg4?? (better 16.Bb2=) 16…Qg4-+ 0-1. Jimito100 (2005) - julian79 (2010), Rated Bullet game, lichess.org, 2020.

5.e3 ab5 6.ab5 Ra1 7.Ba1 de3 8.fe3 Bd6 9.Qf3 Qf6 10.Bc4 Nd7 11.Ne2 Qf3 12.gf3 Nb6 13.Bd3 Nf6 14.c4 Be6 15.f4 ef4 16.Nf4 Bc4 17.Bc4 Nc4 18.Bf6 gf6 19.Nd5 f5 20.Nbc3 c6 21.bc6 bc6 22.Nf6 Ke7 23.Nh5 Ra8 24.Ke2 Bb4 25.Rc1 Rd8 26.Rc2 Na3 27.Rb2 Bc3 28.dc3 Nc4 29.Nf4 Rg8 30.Kd3 Ne5 31.Kd4 Nf3 32.Kc5 Rg1 33.Kc6 Rc1 34.Rb3 Nd2 35.Ra3 Nc4 36.Rb3 Ne3 37.Nd5 Nd5 38.Kd5 Rc2 39.Ke5 Rh2 40.Kf5 Rh3 41.Kg4 Rd3 42.Kh5 Rd6 43.c4 Kd7 44.Rc3 Kc6 45.Kg4 Kc5 46.Kf3 Rd4 47.Ke3 Rc4 48.Rc4 Kc4 49.Kf4 Kd5 50.Kf5 h5 51.Kg5 Ke5 52.Kh5 Ke4 53.Kh4 f5 54.Kg3 Ke3 55.Kg2 f4 56.Kf1 f3 57.Ke1 Kf4 58.Kf2 Kg4 59.Kg1 Kg3 60.Kf1 f2 61.Ke2 Kg2 0–1. A_VB – Noholdsbarred (1640), lichess.org, 2018.

4.a4 c5

5.c3 Nf6 6.Qc2 b6 7.cd4 ed4 8.e3 Bb7 9.ed4 Qe7 (better 9...cd4 10.Qc4 Bc5=) 10.Be2?? (10.Ne2 Qe6+=) 10...Nbd7 (better 10...Bg2 11.dc5 bc5 12.Bf6 Qf6-+ (12...gf6?! 13.Ra3 Bh6 14.f4 Bf4 15.Qf5 Bh1 16.Qf4-+)) 11.Nf3 0-0-0 (11...Rc8 12.0-0 Qe2 13.Re1 Bf3 14.Qd1 Qe1 15.Qe1 Kd8 16.gf3+/-) 12.Qd3 (12.dc5 Nc5 13.d4 Be4+=) 12...Kb8 (12...Be4!? 13.Qb3 Re8=) 13.0-0 Be4 14.Qe3 Nd5 15.Qa3 (15.Qb3 Nf4 16.Bc4 cd4 17.Nd4 Bg2+/-) 15...Qf6 (15...Bb1 16.a5 Nf4 17.Bc4=+) 16.Ne5 (16.Re1 Qg6 17.a5 cd4 18.Qa4+=) 16...c4? (16...cd4 17.Nc6 Qc6 18.bc6 Ba3 19.Na3=) 17.Nc6 (17.Qg3!? Nf4 18.Bc4 Bg2 19.Re1+/-) 17...Ka8 18.Qg3 Rc8 (better 18...Bd6!? 19.Ne5 Nf4+/-) 19.Nc3 Bd6?? (better 19...Nc3 20.Bc3 Bd6+-) 20.Qg4 (better 20.Ne4 Bg3 21.Nf6 Bh2 22.Kh2 N7f6+-) 20...Bf5?? (20...Qh6 21.Qh5 Qh5 22.Bh5 Bg2+/-) 21.Qf3+- (21.Nd5?! Bg4 22.Nf6 Nf6 23.Bc4 Be6+-) 21...g5 (21...Nc3 22.dc3 Qh4 23.Ne5 Be4+-) 22.Nd5 (better 22.Qd5 Qe6 23.a5 Qd5 24.Nd5 Bb8 25.ab6 Be4 26.Bc4 Bd5 27.Bd5 Nb6+-) 22...Qg6 Black intends g4 (22...g4 23.Qe3 Bh2 24.Kh2 Qd6 25.Nf4 Rhe8+-) 23.Nce7 g4 (23...Bh2 24.Kh1 Kb8 25.Nb4+-) 24.Ng6 (24.Nc7! Kb8 25.Na6) 24...gf3+- 25.Bf3 Kb8 26.Nde7 (better 26.Nh8!? Rh8 27.Rfc1 Bd3+-) 26...Be7?? (better 26...hg6 27.g4 Be7 28.gf5 Bd6+/-) 27.Nh8 (better 27.Ne7 Bd3 28.Rfe1 Rce8+-) 27...Rh8 28.Bc6 1-0. Jimito100 (2010) - INSANE_KING (2120), Rated Bullet game, lichess.org, 2020.

5.c3 Nf6 6.Nf3 Bd6 (6...e4 7.Ne5-/+) 7.cd4=+ ed4 8.d3 (8.e3!?=) 8...0-0-/+ 9.Nfd2 Bg4 10.Nc4 Bc7 11.Qc2 Nbd7 (11...Nd5 12.Nbd2-/+) 12.Nbd2 (12.e3 Nd5-/+) 12...Nd5 13.Nf3 Nb4 14.Qb3 Re8 (14...Qe7 15.a5-/+) 15.Ba3 (15.Bd4 Ba5 16.Na5 Qa5-/+) 15...Be6 (better 15...Nd5-+) 16.Bb4= cb4 17.Qb4 (17.Nd4?? Nc5 18.Qb4 Qd4-+) 17...Bg4 (17...Rc8 18.a5 Bc4 19.dc4 Nc5=+) 18.Nd4 (better 18.a5=) 18...Ne5-+ 19.Ne5?? (19.Qc3!? Nc4 20.Qc4-+) 19...Be5 (better 19...Ba5 20.Rb1 Re5 21.Kd1 Bb4 22.Rb4-+) 20.e3? (20.Nc6 bc6 21.Rc1-+) 20...Bd4 21.Qd4 (21.Rc1 Qb6 22.Be2 Be3 23.fe3 Qe3 24.Qd2-+) 21...Qd4 (21...Qa5 22.Qc3 Qc3) 22.Rc1 (22.Be2 Qa1 23.Kd2 Qb2 24.Kd1 Rac8 25.Bg4 Rc1) 22…Qb4 (22...Qb4 23.Rc3 Qc3) 0-1. Jimito100 (1970) - tadan83 (2070), Rated Bullet game, lichess.org, 2020.

5.e3 b6 6.d3 f5 7.Nf3 e4 8.de4 fe4 9.Nfd2 Nf6 10.c3 d3 11.Ne4 Ne4 12.Qd3 Qd3 13.Bd3 Nf6 14.c4 Be7 15.0-0 Bb7 16.Be2 0-0 17.Bf3 Bf3 18.gf3 Nbd7 19.Nc3 Bd6 20.Kh1 Be5 21.f4 Bc3 22.Bc3 Ne4 23.Bb2 Rad8 24.Rad1 Ndf6 25.Kg2 Nd2 26.Rg1 Nc4 27.Bc3 Rd1 28.Rd1 Kf7 29.Kf3 Ke6 30.Rg1 g6 31.h4 Nd6 32.Rd1 Nde4 33.Bf6 Nf6 34.e4 Ke7 35.e5 Nh5 36.Kg4 Rd8 37.Kg5 Rd1 0–1. RichardSommer (1990) – Talant74 (1970), lichess.org, 2020.

5.e3 f5 6.c4 Nf6 7.ed4 cd4 8.d3 (8.Nf3 Bd6=+) 8...Bd6 (8...Bb4 9.Nd2-/+) 9.Nf3=+ Be6 (9...0-0 10.Be2=+) 10.Be2 (10.Qe2 0-0 11.Bd4 Nbd7=) 10...Nbd7 (10...Bb4 11.Nbd2 Qd6 12.0-0=) 11.Ng5 Bg8 12.Nd2 (12.0-0 Qc7=) 12...h6 13.Ngf3 Be6 14.Ba3 (14.0-0 g5=) 14...Ba3=+ 15.Ra3 0-0 16.0-0 Qe7 17.Qb3 Nc5 Black prepares e4 18.Qb2 Bd7 Black intends e4 19.Nb3 b6 (19...a6 20.Nc5 Qc5 21.Raa1=) 20.Nc5 (20.a5 a6=) 20...bc5 21.Rb3 e4 22.de4 (22.Nd2!?=+) 22...fe4-/+ 23.Nd2 Qe5 24.f4 (24.a5 Qf4-/+) 24...ef3 (better 24...Qc7!?-+) 25.Nf3 Qd6 26.h3 Rae8 27.b6? (better 27.Bd3!?=+) 27...ab6 (better 27...Ba4 28.Ra3 Qb6-+) 28.Rb6? (28.Bd3 Re3 29.Rb6 Qg3-+) 28...Qg3 (better 28...Re2 29.Rd6 Rb2 30.Ne5-+) 29.a5?? (better 29.Bd1-+) 29...Bh3 30.Bd3 Ng4 31.Rg6 (31.Rb7 Re3 32.Bh7 Kh7 33.Rc1 Ref3 34.Rg7 Kg7 35.Qb7 Kh8 36.Qf3 Rf3 37.Ra1 Qg2) 31...Rf3! 32.Rf3 (32.Rf3 Qh2 Mate attack) 32...Re1 33.Bf1 (33.Rf1 Qh2) 33…Qh2 0-1. Antares_Sco (1920) - BAHTIYAR888 (2025), Hourly SuperBlitz Arena, lichess.org, 2016.

5.e3 Nf6 6.d3 b6 7.Nf3 Bb7 8.Ne5 Bd6 9.Nf3 0-0 10.ed4 cd4 11.Bd4 Re8 12.Be2 Bf3 13.gf3 Nbd7 14.Nd2 Nc5 15.Ne4 Nfe4 16.fe4 Qc7 17.h3 Rad8 18.Bb2 Ne6 19.Bg4 Nf4 20.Qf3 g5 21.h4 f6 22.hg5 fg5 23.Bf5 Qc2 24.Bh7 Kf8 25.Bd4 Qd3 26.Qd3 Nd3 27.Ke2 Nf4 28.Kf3 Time forfeit 1–0. RichardSommer (1780) – ViorelClaudiu (1700), lichess.org, 2020.

5.Nf3 Bd6 6.e3 Nf6 7.ed4 cd4 8.Bc4 Bg4 9.h3 Bh5 10.g4 Bg6 11.d3 0-0 12.Nh4 e4 (better 12...Re8!?=) 13.Ng6+= hg6 14.Bd4 (14.de4 Bb4 15.Kf1 Bc5+/-) 14...ed3 15.Qd3 Re8 16.Kf1 Qe7 17.Nd2 Nbd7 18.Qg6 (18.g5 Nh7 19.Qg6 Ne5 20.Be5 Be5+/-) 18...Ne5 19.Be5 Be5 20.Re1 Qc7 21.g5 Nh7 (better 21...Bc3 22.Re2 Nh7 23.Qf7 Qf7+-) 22.Qh5 (better 22.Qf7 Qf7 23.g6 (23.Bf7?! Kf7 24.Rg1 Kg6=) 23...Qc4 24.Nc4+-) 22...Bc3?? (22...Ng5 23.h4 Nh7 24.Bf7 Qf7 25.Re5 Re5 26.Qe5+/-) 23.g6 (better 23.Re8 Re8 24.g6+-) 23...Re1 24.Ke1 Bd2 (24...Qc4 25.Qh7 Kf8 26.gf7 Bd2 27.Kd2 Rd8 28.Ke3 Qc3 29.Ke2 Rd2 30.Kf1 Qc4 31.Kg1 Rd1 32.Kh2 Qf4 33.Kg2 Qg5 34.Kf3 Qd5 35.Kg3 Qg5 36.Kh2 Qf4 37.Kg2 Qg5 38.Kh2 Qf4=) 25.Kd2+- Rd8?? (25...Ng5 26.gf7 (26.Qg5?! Qc4 27.gf7 Qf7+/-) 26...Nf7 27.Bf7 Qf7 28.Qf7 Kf7 29.c4+-) 26.Bd3 (better 26.Kc3 Ng5 27.Qg5+-) 26...Qf4 27.Kd1 (better 27.Ke2!? fg6 28.Qg6+-) 27...fg6+= 28.Qg6 (28.Qg4!? Qf2 29.Re1+=) 28...Qf3= 29.Kc1?? (better 29.Kd2 Rd3 30.cd3 Qh1 31.Qe6 Kf8 32.Qf5 Nf6 33.Qc5 Kf7 34.Qa7=) 29...Qh1-+ 30.Kb2 Nf6 31.Bc4 (31.Qg3 Qd5 32.Qc7 Qd4 33.Kb3 Kh8-+) 31...Kh8 32.Qg3 Qe4 33.Bd3 (33.Bb3 Rd2-+) 33...Qd4 (33...Qb4 34.Ka1-+) 34.Kb1 (34.Kb3-+) 34...Qb4 35.Kc1 (35.Ka1 Qa3 36.Kb1-+) 35...Nh5 (better 35...Re8 36.f3 Re1 37.Qe1 Qe1 38.Kb2 Qb4 39.Kc1 Qa4-+) 36.Qg5 (36.Qg4 Qc5 37.Be2 Rd5-+) 36...Qf4 37.Qf4 Nf4 38.Be4 (38.Bf1 g5-+) 38...b6 39.h4 Rd4 40.f3 Ra4 41.Kd2 Rb4 42.Ke3 (42.Bc6 Nh5-+) 42...Ng2 43.Kd3 (43.Kf2 Nh4 44.Bd3 g5-+) 43...Nh4 (43...Rb5 44.Ke2-+) 44.Kc3 (44.c4 g5-+) 44...Rb5 45.Kc4 (45.Kd3 a5 46.Kc4 Rc5 47.Kb3 g5-+) 45...Rc5 46.Kd4 (46.Kd3 a5-+) 46...Kg8 (46...a5 47.c4-+) 47.c4 Kf7 48.Bd5 Kf6 49.Kc3 (49.Ke3 Ra5-+) 49...a5 (49...Ke5 50.Be4-+) 50.Kb3 (50.Kd4 Kf5 51.Ke3 Ng2 52.Kf2 Nf4-+) 50...Ke5 51.Ka4 (51.Kc3 Kf4 52.Be6 Nf3-+) 51...Rd5 (51...Kf4!? 52.Kb3-+) 52.cd5 Nf3 53.d6 Kd6 54.Kb5 Nd4 (better 54...g5!? 55.Kc4 Ne5 56.Kc3-+) 55.Kc4 Nc6 56.Kb3 b5 (56...b5-+) 0-1. chessbit (1855) - ZK1UMSBpoRLS (2085), Rated Rapid game, lichess.org, 2018.

4.a4 c6

5.c3 cb5 6.ab5 dc3 7.Nc3 Bd6 8.e3 Be6 9.Nf3 Nf6 10.Be2 Nbd7 11.0-0 0-0 12.Qb1 Nd5 13.Nd5 Bd5 14.Rd1 (14.e4 Be6+=) 14...Be6 (14...e4 15.Nd4 Qg5 16.g3=+) 15.Bd3 (15.d4!?+/-) 15...f5= 16.Be2 h6 17.h3 Qe7 18.Nh2 e4 19.d3 Be5 (19...Nc5 20.Nf1=+) 20.de4 (20.Be5 ed3 21.Qd3 Ne5+=) 20...Bb2= 21.Qb2 fe4 22.Qd4 Nf6 (better 22...Nc5!? 23.Qe5 Qh4=) 23.Ra7+/- Rfd8 24.Ra8 Ra8 25.Qd6 Qe8 (better 25...Qd6 26.Rd6 Kf7+/-) 26.Bc4?? (better 26.Nf1+/-) 26...Bc4-+ 27.Ng4 (27.b6 Bb3 28.Rb1 Qe6 29.Qe6 Be6-+) 27...Ng4 (27...Qb5?! 28.Nf6 gf6 29.Rd4-+) 28.hg4 Be6 (better 28...Qb5!? 29.Qe7 Re8 30.Qc7-+) 29.g5 Rc8 (29...Bb3 30.Rc1 hg5 31.b6-+) 30.Qf4 (30.gh6 gh6 31.Qe5 Bc4-+) 30...hg5 (30...Qh5 31.Qd6 Bb3 32.Rb1 Qg5 33.Qd7-+) 31.Qg5 (31.Qe4 Qf7-+) 31...Qf7 (31...b6 32.Qe5 Bb3 33.Qe8 Re8 34.Rd6-+) 32.Qe5 Re8 33.Qe4 (33.Rd4 Bc4 34.Qc5 Bd3-+) 33...Bc4 (33...Bb3!? 34.Qg4 Bd1 35.Qd1-+) 34.Qd4 (better 34.Qb1-+) 34...Bd5?? (better 34...Bb5 35.Qb6 Bc4-+) 35.Qd5+- Qd5 36.Rd5 Re5 (36...Kf7+-) 37.Re5 Kh7 (37...Kf7 38.Rc5 Ke6 39.Rc7+-) 38.Rd5 (better 38.b6 Kg6 39.Re7 Kf6 40.Rb7 Ke6+-) 38...Kg6 39.Rd7 1-0. Jimito100 (2050) - ErmasteR (1965), Rated Bullet game, lichess.org, 2020.

5.e3 de3 6.fe3 e4 7.Nc3 Nf6 8.Nge2 Bd6 9.Nd4 (9.d3 Be5+=) 9...Nbd7 (better is 9...Qc7!? 10.d3 Bh2 11.Ne4 Ne4 12.de4 Bg3 13.Kd2 Be5–/+) 10.bc6 Nb6?? (better is 10...bc6!? 11.Nf5 Ne5 12.Nd6 Qd6=) 11.Bb5 (11.a5 Nbd5 12.cb7 Bb7+–) 11...0-0+/– 12.a5 Nbd5 13.Nd5 Nd5 14.Qh5 (better is 14.cb7!? Bb7 15.Nf5+–) 14...Nf6+/– 15.Qg5 h6 16.Qh4 a6 17.Bc4 (17.cb7 Bb7 18.Nf5 Be7+–) 17...Rb8 (17...bc6 18.0-0+=) 18.0-0+/– Be5 (18...Qc7 19.Nf5 Bf5 20.Rf5+–) 19.d3 (19.cb7 Rb7 20.Nc6 Qd6 21.Be5 Qc6 22.Rf6 Qc4 (22...gf6?? 23.Qh6 Re8 24.Bf6 Qf6 25.Qf6+–) 23.Rh6 f6+–) 19...b5 (19...Qc7 20.cb7 (worse is 20.de4 bc6 21.Ba3 c5+=) 20...Bb7 21.Rfb1+=) 20.ab6 (20.Ne6 Be6 21.Be5 Ng4+–) 20...Rb6+/– 21.Bc3 (21.Ne6 Bh2 22.Qh2 (22.Kh2?! fe6 23.Bf6 Rf6+=) 22...fe6 23.c7+–) 21...Qd6 22.h3 (22.de4 Ng4 23.Nf5 Bh2 24.Kh1 Bf5 25.Rf5 Ne3 26.Rf7 Rf7+=) 22...Re8 23.Rac1 (23.Rad1!?+/–) 23...Rc6= 24.Nc6 Bc3 25.Na7 (25.Nd4 ed3 A) worse is 26.Bd3 Bd2 (26...Re3?! 27.Ne2 Ba5 28.Qf4=) 27.Kh1 Bc1 28.Rc1 Re3–/+; B) 26.cd3=) 25...Bb7 (better is 25...Bd7 26.Rb1 Qc7–/+) 26.Rb1+/– Qc6?? (better is 26...Bd5 27.Bd5 Nd5+=) 27.Nc6+– Bc6 28.Ba6 1–0. marekt – BabylonMike, ChessWorld.net, 2012.

5.Nf3 cb5 6.Ne5+= Qe7 (better 6...ba4 7.Ra4 Bc5+=) 7.e3?? (better 7.Bd4 f6 8.Nf3 ba4 9.Ra4+/-) 7...Qe5-/+ 8.Bd4 Qe6 9.ab5 a6 10.Be2 ab5?? (better 10...Nf6-/+) 11.Ra8 Nc6 12.Bb5 Bb4 (12...Nge7 13.Qh5+-) 13.0-0 (better 13.Bg7 Nge7 14.Bh8+-) 13...Nf6 14.c3 (14.Bf6 gf6 15.d4 Ke7+-) 14...Bd6 (14...Be7 15.Bf6 Bf6 16.d4+-) 15.Bf6 gf6 16.d4 0-0 17.d5 (17.c4!? Bd7 18.Rf8 Kf8+-) 17...Qe5 18.f4 (18.g3!? Ne7 19.c4 Bh3 20.Rf8 Kf8+-) 18...Qe3 19.Kh1 Bf4 (19...Ne7+-) 20.dc6 (better 20.Rc8 Na7 21.Qg4 Bg5 22.Rf8 Kf8 23.Be2+-) 20...Bg4 (20...bc6 21.Rc8! cb5 22.Qg4 Bg5+-) 21.Rf8 (better 21.Qg4 Bg5 22.cb7+-) 21...Kf8 22.Qg4 f5 (22...bc6 23.Bc4 Qe4 24.Nd2+-) 23.Qf4 Qc5 24.cb7 Qb5 25.b8Q Qb8 26.Qb8 Kg7 27.Qf4 (27.Qe5 f6 28.Qf5 h6 29.Qf6 Kh7 30.Qf7 Kh8 31.Qe7 Kg8 32.Rf8) 27...f6 (27...Kf6 28.Qf5 Ke7 29.Qf7 Kd6 30.Rf6 Kc5 31.Na3 h6 32.Qc4) 28.Qf5 h6 29.Qf6 Kg8 (29...Kh7 30.Qf7 Kh8 31.Qe7 Kg8 32.Rf8) 30.Re1 (30.Qg6 Kh8 31.Rf8) 30...h5 31.Re7 h4 32.Qg7 1-0. BeepBeepImAJeep (2545) - Cyberalraptor (1705), lichess.org, 2018.

4.a4 Nf6

5.c3 c5 6.cd4 cd4 7.Qc2 Nbd7 8.Nf3 Bd6 9.e3 de3 (9...Qe7 10.ed4 e4 11.Ng1=+) 10.de3= 0-0 11.Bd3 Bb4 (11...Qe7 12.Nbd2=) 12.Nbd2 (12.Bc3 Qe7 13.Bb4 Qb4 14.Nbd2 Re8=) 12...e4 (12...Nc5!? 13.Bc4 Nfe4=+) 13.Be4+= Ne4 14.Qe4 Qa5 (14...Bd2 15.Nd2 (15.Kd2?? Nc5 16.Qd4 Nb3 17.Ke2 Nd4 18.Bd4 Re8-+) 15...Nc5 16.Qd4 Nd3 17.Ke2 Nb2 18.Qb2=) 15.Qd4 (15.0-0 Nc5 16.Qc2 f6+/-) 15...Nf6 16.0-0 Bg4?? (16...Rd8 17.Nb3 Rd4 18.Na5+/-) 17.h3 (better 17.Nb3 Qd8 18.Qb4 Bf3 19.gf3+-) 17...Rad8 (better 17...Be6!? 18.Rfc1 Rfd8+/-) 18.Qf4+- Be6 (18...Bd6 19.Qg5 h6 20.Qh4 Bf3 21.Nc4+- (21.Nf3?! Be7+/-)) 19.Bf6 gf6 20.Ne4 f5?? (20...Be7+-) 21.Nf6 Kh8 (21...Kg7 22.Qg5 Kh8 23.Qh6 Qb5 24.Qh7) 22.Qh6 (22.Qh6 Qb5 23.Qh7) 1-0. Jimito100 (2040) - JANDA_BOHAY (1975), Rated Bullet game, lichess.org, 2020.

5.c4 dc3 6.Nc3 Bb4 7.e3 0-0 8.Bc4 Bc3 9.dc3 Qd1 10.Rd1 e4 11.Ne2 Bg4 12.0-0 c6 13.Rd2 cb5 14.ab5 Nbd7 15.f3 ef3 16.gf3 Bh5 17.Nf4 Bg6 18.Kf2 Ne5 19.Be2 Nfd7 20.Rfd1 Nc5 21.c4 f5 22.Be5 Bf7 23.Bd6 Rfc8 24.Bc5 Rc5 25.Rd4 g5 26.Nd5 Bd5 27.Rd5 Rd5 28.Rd5 Kf7 29.Bd3 f4 30.ef4 gf4 31.Bh7 Kf6 32.Be4 Rc8 33.c5 b6 34.c6 Rh8 35.c7 Rh2 36.Kg1 Rh8 37.Bf5 Rg8 38.Kf2 Rg5 39.c8Q Rf5 40.Qf5 1–0. ArgosZgZ – Chinguelsilva, lichess.org, 2019.

5.e3 Bb4 6.Nf3 e4 7.Nd4 c5 8.bc6 Nc6 9.Nc6 bc6 10.c4 0-0 11.Qb3 c5 12.Be2 Bg4 13.Bg4 Ng4 14.h3 Nf6 15.0-0 Bd2 16.Rd1 Rb8 17.Qc2 Qb6 18.Rd2 Rfd8 19.Rd8 Rd8 20.Bf6 Qf6 21.Nc3 Qe5 22.Rb1 h6 23.Nd5 Rd6 24.Rb8 Kh7 25.Rb7 Kg6 26.Ra7 h5 27.Qe2 Rb6 28.g3 Qa1 29.Kg2 Rb1 30.Ra6 f6 31.Nf4 Kf7 32.Qh5 g6 33.Qh7 Kf8 34.Ra8 Rb8 35.Rb8 1–0. RichardSommer (2015) – utkuaydogdu (2135), lichess.org, 2020.

5.Nf3 c6 6.Ne5 Bd6 7.Nf3 (7.Bd4 c5 8.Bc3 0-0+/-) 7...c5 8.c3 dc3 9.Nc3 0-0 10.e3 b6 (10...Be6 11.Be2+=) 11.Be2 Bb7 12.0-0 Ne4 13.d4 cd4?? (13...Re8+/-) 14.Nd4 (better 14.Ne4 Bc7 15.Qc2+-) 14...Nc3+= 15.Bc3 Nd7 (15...Qc7 16.Rc1 Bh2 17.Kh1 Be5+-) 16.Bf3 Bf3 17.Qf3 (better 17.Nf3 Nc5 18.Qd4+/-) 17...Nf6? (better 17...Qc7 18.Rfc1 Bh2 19.Kf1 Be5+=) 18.Nc6+- Qc7 19.Rad1 (better 19.Bf6 gf6 20.Qf6 Rfe8+-) 19...a6?? (better 19...Ne8+-) 20.Bf6 gf6 21.Qf6 Be7 (21...Rfd8 22.Nd8 Rd8 23.ba6 Be7 24.Rd8 Qd8+-) 22.Qe7 (22.Ne7 Qe7 23.Qe7 ab5 24.Qg5 Kh8 25.Qf6 Kg8 26.Rd5 Rfd8 27.Rd8 Rd8 28.Qd8 Kg7 29.Qg5 Kf8 30.Rd1 f6 31.Qf6 Ke8 32.Rd8) 22...Qe7 23.Ne7 Kg7 24.Nc6 (24.Rd6!? Rfb8+-) 24...ab5 25.ab5 Ra5 (25...Ra2 26.Rd6+-) 26.Rb1 (better 26.Na5 ba5 27.Ra1 Rb8 28.Ra5 Rb6+-) 26...Ra4 27.Rfd1 Rc4 (27...Rfa8 28.Rd6+-) 28.g3 Rc5 (28...Ra8 29.Rd7 Rc3 30.Rb2+-) 29.Kg2 (29.Rd7 Ra8+-) 29...Re8 (29...f5 30.Nd8 Kf6 31.Rd7+-) 30.Rd4 (better 30.Rd7 Rc2+-) 30...Ree5 (30...Re6 31.Rd7+-) 31.Ne5 Re5 32.Rg4 (32.Rd6 Re6 33.Re6 fe6+-) 32...Kf6 33.Rd4 Rc5?? (33...Kg7 34.Rd6 Re6 35.Re6 fe6+-) 34.Rd6+- Kg7 35.Rb6 Re5 36.Rc6 1-0. Jimito100 (2000) - CheckedMatt (1925), Rated Bullet game, lichess.org, 2020.

4.c3 dc3

5.Nc3 Be6 6.a4 Nf6 7.e3 Bd6 8.Nf3 0-0 9.Be2 Nbd7 10.0-0 Nc5 11.Nb1 (11.d4 ed4 12.Nd4 a6=) 11...Ncd7 (better 11...Nb3!? 12.Ra3 Ba3 13.Ba3 Re8 14.Ne5 Nd7=+) 12.d4= ed4 13.Nd4 Bd5 (13...Nc5 14.Nd2=) 14.Bf3 Bf3 15.Nf3 Ne5?? (better 15...Qe7=) 16.Ne5+- Be5 17.Be5 Qd1 18.Rd1 Rad8 (18...Rfd8 19.Nc3 Ne8 20.Nd5+-) 19.Rd8 (19.Nd2!? Nd5+-) 19...Rd8 20.Na3 c6 (20...Ne8 21.Kf1+-) 21.bc6 bc6 22.Bd4 a6 (22...Nd7 23.Rd1 (worse 23.Ba7 Ra8+-) 23...Nb6 24.Rc1 Na4 25.Rc6+-) 23.Rc1 Rc8 24.h3 Nd5 25.Nc4 f6 26.Na5 c5 27.Rc5 (worse 27.Bc5 Nb6+-) 27...Rc5 28.Bc5 Kf7 (28...Nc3 29.Nc6 Na4 30.Bd4+-) 29.Nc6 Ke6 30.a5 Nc7 31.Bb6 Nb5 (31...Kd6 32.Nb4+-) 32.Nb8 Kd6 33.Na6 Kc6 34.Nb4 Kd6 (34...Kb7 35.Bd4+-) 35.Nd3 (35.a6 Nc7+-) 35...Kd5 (35...Kc6 36.Kf1+-) 36.g3 Kc4 (36...Kc6 37.Nb4 Kb7 38.f3+-) 37.Nf4 Kc3 (37...Nd6 38.a6 Nc8 39.Bd4+-) 38.Kg2 (38.a6 Kc4+-) 38...Kb4 (38...Kc4 39.a6 Na7 40.Ba7+-) 39.Kf3 (39.a6 Na7+-) 39...Kc3 (39...Kc4 40.a6+-) 40.Kg4 (40.a6 Kc4+-) 40...Kc4 41.Ne6 (41.a6!? g6+-) 41...g6 42.Ng7 (42.Nf8 h6 43.Ng6 Kd5+-) 42...f5 (42...Kd5 43.Ne8 h5 44.Kf4+-) 43.Kg5 Kd5 44.Kh6 Ke5 45.f3 Kf6 46.Kh7 g5 47.Nh5 (better 47.Bd8 Ke5 48.Bg5 Na7+-) 47...Ke6 48.Kh6 Ke5 (48...g4 49.fg4 fg4 50.hg4+-) 49.Kg5 f4 50.ef4 Ke6 51.g4 (better 51.f5 Kd7+-) 51...Kf7 52.f5 (better 52.a6 Ke7 53.f5 Kd7+-) 52...Kg8 53.Kf4 (better 53.a6 Kf7 54.f6 Ke6 55.Ng7 Kd5+-) 53...Kf7 54.g5 Kg8 55.h4 Kf7 56.Ke5 (56.g6!? Kf8 57.f6 Ke8+-) 56...Kg8 57.f4 Kf7 If Black now would get g6+ in, he might survive 58.Bc5 (58.g6 Ke7 59.f6 Kd7 60.f7 Ke7 61.Nf6 Na3 62.Bc5 Kd8 63.f8Q Kc7 64.Qa8 Nc4 65.Ke6 Na5 66.Nd5) 58...Kg8 59.a6 (59.g6 Na7 60.f6 Nc6 61.Ke4 Nd8 62.a6 Nf7 63.a7 Nd6 64.Bd6 Kh8 65.a8Q) 59...Kf7 (59...Kh8 60.g6 Na7 61.f6 Nc6 62.Ke4 Nd8 63.a7 Kg8 64.a8Q Kh8 65.Qd8) 60.a7 (60.g6 Ke8 61.Nf6 Kd8 62.Bb6 Ke7 63.g7 Na3 64.Bc5 Kd8 65.Bd6 Nc4 66.Ke6 Nd6 67.Kd6 Kc8 68.g8Q) 60...Na7+- 61.Ba7 Kg8 (61...Ke8 62.g6 Kd7 63.g7 Kc8 64.g8Q Kb7 65.Qb8 Kc6 66.Qb6 Kd7 67.Nf6 Ke7 68.Qc7 Kf8 69.Bc5) 62.Bd4 (62.Nf6 Kg7 63.Bc5 Kf7 64.g6 Kg7 65.h5 Kh8 66.Ne8 Kg8 67.h6 Kh8 68.f6 Kg8 69.f7 Kh8 70.f8Q) 62...Kf7 (62...Kf8 63.Ke6 Kg8 64.Nf6 Kg7 65.Nd7 Kh7 66.h5 Kg8 67.h6 Kh7 68.Bg7 Kg8 69.Nf6) 63.g6 Kg8 (63...Ke7 64.f6 Kd7 65.g7 Kc8 66.g8Q Kb7 67.Qb3 Kc7 68.Qb6 Kc8 69.f7 Kd7 70.Qb7 Kd8 71.f8Q) 64.Ke6 White intends g7 (64.Bc5 Kh8 65.f6 Kg8 66.f7 Kh8 67.f8Q) 64...Kf8 65.g7 Kg8 66.Nf6 (66.Bc5 Kh7 67.Bf8 Kh6 68.g8Q Kh5 69.Qg5) 66...Kg7 67.Ne8 (67.h5 Kh6 68.Bc5 Kg7 69.Ng4 Kg8 70.f6 Kh7 71.f7 Kg7 72.f8Q Kh7 73.Nf6) 67...Kf8 (67...Kh6 68.Ng7 Kh7 69.f6 Kg8 70.f7 Kf8 71.Bc5 Kg7 72.f8Q Kh7 73.Qf7 Kh6 74.Bf8) 68.f6 Ke8 69.Bc5 (69.f7 Kf8 70.Bc5 Kg7 71.f8Q Kh7 72.Qf7 Kh6 73.Bf8) 69...Kd8 70.f7 Kc7 71.f8Q Kc6 72.Qd6 Kb5 73.f5 (73.Kd5 Ka4 74.Qb8 Ka5 75.Qb6 Ka4 76.Qb4) 73...Kc4 74.f6 (74.Qd4 Kb3 75.Qd3 Kb2 76.Ba3 Ka2 77.Qc3 Kb1 78.Qb2) 74...Kc3 75.Bb6 (75.f7 Kb2 76.Qd3 Ka1 77.Bd4 Ka2 78.Qc2 Ka3 79.f8Q) 75...Kc4 76.Qc5 (76.f7 Kb3 77.Qd3 Ka4 78.f8R Kb4 79.Rf4) 76...Kd3 77.Ke5 (77.f7 Kd2 78.f8R Ke1 79.Rd8 Ke2 80.Qf2) 77...Ke2 78.Qe3 Kd1 79.Qf2 (79.Qc3 Ke2 80.f7 Kd1 81.f8Q Ke2 82.Qff3) 79...Kc1 80.Kd4 Kb1 (80...Kd1 81.Kd3 Kc1 82.Qc2) 81.Kc3 Ka1 (81...Kc1 82.Qc2) ½-½. Jimito100 (2005) - Hans222 (2075), Rated Bullet game, lichess.org, 2020.

5.Nc3 Nf6 6.a4 a5 7.e3 Bd6 8.Nf3 0-0 9.Be2 c6 10.0-0 cb5 11.ab5 (11.Nb5 Nc6+=) 11...Nbd7 12.Qb1 h6 13.Ne4 (13.Rd1!?=) 13...Ne4=+ 14.Qe4 e5 seems the pivot of the position 14...f5?? (14...Nc5 15.Qc2 e4 16.Nd4=) 15.Qc2 (better 15.Qd5 Kh7 16.Qd6+-) 15...Nc5? (better 15...e4!? 16.Nd4 Nc5=) 16.Ne5 Qe7? (16...Be6 17.Nc4 b6 18.Nd6 Qd6 19.Ba3+-) 17.Nf3 (better 17.Ng6 Qc7 18.Nf8 Kf8 19.Rfc1+-) 17...f4 18.Bc4 Kh8 (18...Be6 19.d4 Nd7 20.e4+/-) 19.Qc3 (better 19.Qg6!? Be6 20.Be6 Ne6 21.Rfe1+-) 19...Ne4+/- 20.Qc1 (20.Qd4 Bg4 21.Nh4 Bh5+/-) 20...Bg4+= 21.Nd4 fe3 22.de3 Rac8 (22...Nf2 23.Rf2 Bh2 24.Kh2 Qh4 25.Kg1 Qf2 26.Kh1 Rae8-/+) 23.Ra4 (23.Qc2!?+=) 23...Bb4 (better 23...Nf2 24.Nf3 Nd3 (24...Bf3?! 25.Rf2 Bd5 26.Rf8 Qf8 27.Qc3=+) 25.Bd3 Rc1 26.Bc1 Bf3 27.gf3 Bh2 28.Kf2 Rd8-+) 24.Qc2?? (better 24.f3 Nd2 25.Rb4 Nf1 26.Rb3 Rc4 27.Qc4+=) 24...Nd2 25.Rd1?? (25.Qg6 Nc4 26.Qg4 Nb2 27.Ra2-+) 25...Nc4 (better 25...Rc4 26.Rd2 Rc2 27.Rc2-+) 26.Rb4 (26.Rda1 Nb6 27.Qd3 Na4 28.Ra4 Qh4-+) 26...Qb4 27.Bc3 Qe7 (better 27...Ne3 28.Bb4 Nc2 (28...Nd1?! 29.Bf8 Rc2 30.Nc2=+; 28...Bd1?! 29.Qb1 ab4 30.fe3=+) 29.Bf8 Bd1 30.Nc2 Bc2-+) 28.Qb2 (28.Re1 b6-+) 28...Ne3 (better 28...Nb2 29.Rf1 Rc3-+) 29.Re1 Rc3! 30.Qc3 Nd5 31.Re7 Nc3 32.Ne6?? (32.Rb7 Rd8 33.f3 Rd4 34.fg4 Rg4 35.b6-+) 32...Be6 33.h3 (33.Re6 a4 34.Re3 Nb5-+) 33...Ne2 (better 33...Bd5!? 34.b6-+) 34.Kf1 Bc4 35.Re6 (35.Rb7 Nc3 36.Kg1 Nb5 37.Rb6-+) 35...Be6 36.Ke2 Bc4 (36...Bc4 37.Ke3 a4 38.Kd4 Rc8 39.b6 a3 40.Ke5 a2 41.Kf5 a1Q 42.Kf4 Rf8 43.Kg4 Qd4 44.f4 Qf4 45.Kh5 Bf7) 0-1. Jimito100 (1980) - Nammwatin (2045), Rated Bullet game, lichess.org, 2020.

5.Nc3 Nf6 6.a4 Bb4 7.e3 0-0 8.Nf3 Nbd7 9.Be2 Re8 10.0-0 Nc5 (10...e4 11.Nd4 Bc5=) 11.Qb1?? (better 11.Na2!? Ba5 12.Ne5+/-) 11...e4 (11...Nb3 12.Ra2 e4-/+ (12...Nd2 13.Nd2 Qd2 14.Rd1 Bc3 15.Rd2 Bd2 16.Be5 Re5 17.Rd2+-)) 12.Nd4= Bc3 13.Bc3 Bg4 14.Bg4 Ng4 15.h3 Ne5 16.Nb3 (16.f3 Qd5=) 16...Nb3 Attacking the backward pawn on d2 17.Qb2?? White prepares a5 (better 17.Qb3 Qd3 18.Qb4=) 17...Nc5 (better 17...Na1!? 18.Be5 Nb3 19.d4-+) 18.Be5 Nd3 19.Bc7 Qc7 20.Qb3 Qe5 (20...Rad8 21.Rad1-+) 21.a5 (21.f3 Re6 22.fe4 Qe4-+) 21...a6 22.ba6 ba6 23.Rab1 (23.f3 Rab8 24.Qc4 Qb5 25.Qb5 Rb5 (25...ab5?! 26.fe4 Re4 27.Rfb1-+) 26.fe4 Rb2-+) 23...h6 (better 23...Qa5!? 24.f3 Qd2 25.fe4 Qe3 26.Kh2 Qe4 27.Qf7 Kh8 28.Rb7 Qe5 29.Kh1-+) 24.Qa4 Rad8 25.Rb6 (25.f3 f5-+) 25...Nc5 (25...Rd5!? 26.Qc6-+) 26.Qb4 Rd3 27.Rc6 Rd5 28.Rb1 (28.f4 Nd3 29.fe5 Nb4-+) 28...Red8 (better 28...Nd3 29.Qc4 Qf5-+) 29.Rb2 (29.Qc3 Qh5-+) 29...Kh7 (better 29...Nd3 30.Qc3 Nb2 31.Rb6-+) 30.g3 (30.Ra2-+) 30...Nd3 31.Qb7 Nb2 (31...Qf5 32.Rh6 Kh6 33.Rb6 Kh7 34.Qf7 Qf7 35.f4 Qh5 36.Rb1 Qh3 37.Ra1 Qg3 38.Kf1 Qf2) 32.Rc7 (32.Qf7 Nd3 33.Kh1 Nf2 34.Qf2 Rd2 35.Qf6 gf6 36.Rc1 Rd1 37.Rd1 Rd1 38.Kg2 Qb2) 32...Nd3 33.Qa6 Qg5 (33...Qc7 34.Qd3 Rd3 35.a6 Rd2 36.Kg2 Rf2 37.Kf2 Rd2 38.Ke1 Qc1) 34.Qb7 (34.Rf7 Nf2! 35.Qf1 Rd2 36.Qg2 Qe3 37.Qf2 Rf2 38.Rf2 Qg3 39.Kf1 Rd1 40.Ke2 Qd3) 34...Nf2! 35.Rf7 (35.Kf2 Rd2 Mate attack) 35...Qg3 36.Kf1 Nh3 (36...Nh3 37.Rg7 Qg7 38.Qg7 Kg7 39.d3 Rg5 40.Ke2 Rg2 41.Kd1 Rf8 42.Ke1 Rff2 43.de4 Rg1; 36...Qh3 37.Ke1 Qh1 38.Kf2 Rf5 39.Rf5 Rd2 40.Kg3 Qh2 41.Kg4 Rg2) 0-1. Jimito100 (1975) - Jakesin (2000), Rated Bullet game, lichess.org, 2020.

4.c3 c5

5.bc6 Nc6 6.cd4 ed4 7.a3 Nf6 8.Nf3 Bc5 9.Qc2 Bb6 (9...Qb6 10.d3-/+) 10.e3=+ 0-0 11.Bd3 de3 (11...Bd7 12.0-0=+) 12.de3= h6 13.0-0 Bg4 14.Rd1 Bf3 15.gf3 (better 15.Bh7 Nh7 16.Rd8 Rfd8 17.gf3+=) 15...Nh5?? (better 15...Qe7=) 16.Bh7+- Kh8 17.Rd8 Rad8 18.Be4 Ne5 (18...Rd6+-) 19.Be5 Rde8 (19...Rfe8 20.f4 Re7 21.Nc3+-) 20.Bd4 (20.f4 Rc8 21.Qe2 Nf6 22.Bb7 Rc1 23.Kg2 Rg8+-) 20...Bd8 (20...Bd4 21.ed4 f5+-) 21.Nd2 (21.Bb7!? a5+-) 21...Bf6 22.Nc4 (better 22.Bf6!? Nf6 23.Bb7 Rb8+-) 22...Bd4 23.ed4 b5 (23...Re7 24.Qa4 b6 25.Qb4+-) 24.Ne5 f5 (24...Nf4 25.Qc7 Kg8 26.Nd7 Ne2 27.Kf1 Nd4 28.Nf8 Rf8 29.Qa7+-) 25.Bf5 Nf6 26.Ng6 Kg8 27.Nf8 (27.Qb3 Rf7 28.Be6 Re6 29.Qe6 Kh7 30.Qf7 a5 31.Nf8 Kh8 32.Ne6 Nh5 33.Qe8 Kh7 34.Qh5 g6 35.Qe5 b4 36.Qg7) 27...Kf8 28.d5! Nd5 29.Qc5 Ne7 30.Re1 Kf7 31.Bg4 g6 32.Qb5 (32.Bd7 Rb8 33.Re7 Kg8 34.Qc3 b4 35.Qg7) 32...h5 33.Qc4 Kg7 34.Bh3 (34.Bd7 Nd5 35.Re8 a6 36.Qd4 Kf7 37.Qd5 Kg7 38.Qe5 Kf7 39.Qe7) 34...Kf8+- 35.Qd4 Nf5 (35...Kg8 36.Bd7 a6 37.Be8 Nc6 38.Bc6 Kh7 39.Re7 Kh6 40.Qe3 g5 41.Qe6) 36.Qh8 (36.Qh8 Kf7 37.Re8 g5 38.Qf8 Kg6 39.Bf5; 36.Qf6 Kg8 37.Re8 Kh7 38.Qh8) 1-0. Jimito100 (2015) - vaderlein (2005), Rated Bullet game, lichess.org, 2020.

5.bc6 Nc6 6.cd4 ed4 7.Nf3 Nf6 8.Qb3 Bc5 9.d3 (9.e3!?=+) 9...0-0 10.Nbd2 Re8 11.Qc2?? (11.Qb5 Ne5 12.Ne4 Ne4 13.de4 b6-/+) 11...Bb6 (better 11...Nb4 12.Qc4 b5-+) 12.Nb3 Bg4 13.Nfd2 (better 13.Rc1!?-/+) 13...Rc8-+ 14.Nc4 Nb4 (14...Ne5 15.f3 Bf5 16.e4 Nc4 17.dc4 Ne4 18.fe4 Be4 19.Qd2 Bg2 20.Kf2 Bh1 21.c5 Bc5 22.Kg1-+) 15.Qd2 Nbd5?? (better 15...a5!? 16.Rc1 Bf5-+) 16.h3 (16.Nb6 Qb6 17.Bd4 Qd6=+) 16...Bh5 (16...Rc4 17.hg4 Ra4 18.g5-/+) 17.g4 (17.Nb6 Qb6 18.Bd4 Qd6+=) 17...Bg6 (17...Rc4!? 18.gh5 Ne3 19.dc4 Ne4 20.fe3 Qh4 (20...Nd2?! 21.Kd2 de3 22.Kc1-+) 21.Kd1 Nd2 22.Nd2 de3-+ (22...Re3?! 23.Rg1=+)) 18.Bg2 (18.Nb6!? Qb6 19.Bd4+=) 18...Nc3=+ 19.Bc3?? (better 19.Nb6 Re2 20.Qe2 Ne2 21.Nc8 Qc8 22.Kd2=+) 19...dc3-+ 20.Qc3 Nd5 (better 20...Bd3 21.0-0-0 A) 21...Bc4?! 22.Rd8 Red8 23.Kb2-/+ (23.Bb7? Rc7-+); B) 21...Rc4 22.Qc4 Bc4 23.Rd8 Rd8-+) 21.Qd2 Bf2?? (21...Bc7 22.Rd1 b5-/+) 22.Kf2+- Qh4 23.Kf1 Qg3?? (better 23...Rcd8 24.e4 Qg3+-) 24.e4 (better 24.Bd5 b5 25.Nb2+-) 24...Nf4 (better 24...b5 25.Nd4 bc4 26.ed5 Bd3 27.Kg1 Re3-+) 25.Qe3?? (better 25.Rd1+/-) 25...Qg2-+ 26.Ke1 Qh1 27.Kd2 Qh2 28.Kc3 b5 (28...Nd5 29.ed5 Re3 30.Kb4 Bd3 31.Rc1 Bc4 32.Rg1 Qd6 33.Ka4 b5 34.Ka5 Qa3) 29.Rf1 bc4 (29...Nd5 30.Kd4 Rc4 31.dc4 Qe5 32.Kd3 Qc3 33.Ke2 Qe3 34.Kd1 Qe4 35.Rf5 Qe1 36.Kc2 Qc3 37.Kb1 Re1 38.Nc1 Rc1) 30.dc4 Nd5 31.ed5 (31.Kd3 Ne3 32.Rf5 Qc2 33.Ke3 Qe4 34.Kf2 Qe1 35.Kf3 Re3 36.Kf4 Qf2 37.Kg5 h6) 31...Re3 32.Kd4 (32.Kb4 Qd6 33.c5 Rb8 34.Ka5 Reb3 35.ab3 Qc5 36.Ka6 Bd3) 32...Qe2 (32...Qe5) 33.Re1 (33.Nc5 Qd2 34.Nd3 Qd3) 33…Qd3 (33...Rc4) 0-1. Jimito100 (2065) - knightattack500 (2040), Rated Bullet game, lichess.org, 2020.

5.bc6 Nc6 6.cd4 Nd4 7.Nf3 Nf3 8.ef3 Bd6 9.Bb5 Bd7 (9...Kf8 10.0-0 Qb6 11.Qa4=+) 10.Qa4 (10.Bd7!? Qd7 11.f4=) 10...Nf6 11.0-0 0-0 12.Bd7 Qd7 13.Qh4 (13.Qd7 Nd7 14.Nc3 Rac8=+) 13...Qf5 14.d4 e4 (14...Rad8 15.de5 Be5 16.Be5 Qe5 17.Na3-/+) 15.fe4=+ Ne4 16.Nc3 Nd2 17.Rad1? (better 17.Rfc1=+) 17...Nf1-+ 18.Kf1? (18.Rf1 Rfe8 19.f3-+) 18...Qc2 19.Ne2 (19.Ba1 Rac8 20.Qg4 Rc3 21.Bc3 Qc3 22.Qe4-+) 19…Qd1 0-1. Jimito100 (2010) - Saeed__khodadadi (2060), Rated Bullet game, lichess.org, 2020.

5.cd4 ed4 6.Na3=.

4.c3 Nf6

5.c4 Bc5 6.Nf3 Nbd7 7.e3 0-0 8.Ng5 h6 9.h4 b6 10.Qf3 Nb8 11.Qa8 Bf5 12.Nf3 de3 13.fe3 Nbd7 14.Qa7 Be4 15.Nc3 Bh7 16.Qb7 Bg6 17.Nd5 Nd5 18.Qd5 e4 19.Ne5 Ne5 20.Qe5 f6 21.Qg3 Bh7 22.h5 Qd7 23.Be2 Bd6 24.Qh4 Re8 25.g4 Be5 26.0-0-0 Bb2 27.Kb2 Qd6 28.Kb3 Ra8 29.a4 Qe5 30.Rhg1 Rd8 31.Qg3 Qg3 32.Rg3 Kf7 33.Kb4 Ke6 34.a5 ba5 35.Ka5 Ra8 36.Kb4 Kd6 37.c5 Ke5 38.b6 cb6 39.c6 Ra5 40.Rc1 Ra8 41.Kb5 Kd6 42.c7 Rc8 43.Kb6 Bg8 44.Rc6 Kd7 45.Bc4 Bc4 46.Rc4 Kd6 47.Rd4 Ke5 48.Rd8 Rc7 49.Kc7 Ke6 50.Rd7 g5 51.Rh7 Kd5 52.Rh6 Ke5 53.Kd7 f5 54.Re6 Kd5 55.gf5 g4 56.Rg4 Kc4 57.Rge4 Kb3 58.Rc6 Kb2 59.Re8 Kb3 60.Rb8 Ka4 61.Ra6 Black king mated 1–0. hamiltonharris (1875) – TIGS5050 (1875), ChessWorld.net, 2016.

5.cd4 ed4 6.Nf3 Bc5 7.Qa4 Bd7 8.Bd4 Bd4 9.Nd4 c5 10.bc6 Nc6 11.Nc6 (11.Nc3 a6+=) 11...Bc6= 12.Qd1 (12.Qf4 0-0=) 12...0-0 13.e3 Ne4 14.f3?? (14.Nc3 Nc3 15.dc3 Qg5=) 14...Nc5 (better 14...Qh4 15.g3 Ng3-+) 15.Be2= Nd3 16.Bd3 Qd3 17.Qe2 Qe2 (17...Qc2!? 18.Kf2 Rfd8+=) 18.Ke2+/- Rab8 (18...Bb5 19.Kf2+/-) 19.Rc1 Rfd8 20.Nc3 Rbc8 21.d4 Bd7 22.Rab1 Re8?? (22...b5 23.e4+-) 23.Ne4 (better 23.Rb7 Red8 24.Ra7+-) 23...b6 (23...Rc1 24.Rc1 Bb5 25.Kf2+-) 24.Ng3 (24.Nd6 Rc1 25.Rc1 Rd8+-) 24...Rc1 25.Rc1 h6 (25...Kf8 26.e4+-) 26.Rc7 Be6 (26...Bb5 27.Kf2+-) 27.Ra7 g5 28.Ne4 (28.e4 Kg7+-) 28...Rc8 (28...Kg7 29.Kd3+-) 29.Kd3 (29.d5 Bf5+-) 29...f5 (29...Bc4 30.Kd2+-) 30.Nd6 (better 30.Nf6 Kf8 31.d5+-) 30...Rc6 31.Nb5?? (31.Ra8 Kh7 32.Ne8 Kg6+-) 31...Rc1?? (better 31...Bc4 32.Kd2 Bb5-/+) 32.a4 Rd1 33.Ke2 Rb1 (33...Ra1 34.Nd6 Ra2 35.Kf1+-) 34.Ra8 (34.Nd6!? Rb2 35.Kf1 f4+-) 34...Kf7 35.Rb8 Kg6?? (35...Bc4 36.Kd2 Bb5 37.Rb7 Ke8 38.ab5 Rb5 39.Kc3+-) 36.Kf2 (better 36.Rb6 Rb2 37.Kf1 Rb1 38.Kf2 Kf7 39.Nd6 Ke7 40.Rb1 Kd6 41.Rb6 Ke7 42.Re6 Ke6+-) 36...Bf7?? (better 36...Rb2 37.Ke1 Rg2 38.Rb6 Kf7+-) 37.Rb6 Kh5 Black plans g4 38.Kg3 (38.a5 Rb2 39.Kg3 Ra2+-) 38...Rb2 (38...Bc4 39.Rb7 Bd5+-) 39.f4 (39.a5 Ra2 40.Nd6 Bg6+-) 39...g4?? (better 39...Bd5!? 40.Rh6 Kh6 41.fg5 Kg5 42.h4 Kf6-+) 40.h3 (better 40.Rf6 Bc4 41.Rf5 Kg6+-) 40...gh3?? (better 40...Bd5 41.hg4 fg4=) 41.Kh3+- (41.gh3?! Bd5 42.h4 Rg2 43.Kh3 Re2+-) 41...Bg6 (41...Bd5 42.Rf6 Bg2 43.Kg3 Be4+-) 42.Nd6 (better 42.Re6+-) 42...Rb6-+ 43.a5?? (43.Ne4 Be8 44.Nc5-+) 43...Ra6 (better 43...Rd6 44.g3 Re6-+) 44.Nc4 Ra5?? (better 44...Bf7 45.Ne5 Bd5-+) 45.Na5+- Be8 46.Nc4 Kg6 (46...Bc6 47.Nd6 Bd7 48.d5+-) 47.Nd6 Bf7 (47...Bd7+-) 48.Nf7 Kf7 49.Kh4 Kg6. Jimito100 (1970) - Mcandela200 (2020), Rated Bullet game, lichess.org, 2020.

5.cd4 ed4 6.Nf3 Bc5 7.Qc2 b6 8.d3 Bf5 (8...c6 9.Qa4 cb5 10.Qb5 Bd7 11.Qc4=+) 9.Nbd2 (9.Qa4 Qe7+=) 9...0-0 (9...c6 10.Qa4 Bd7 11.Bd4 cb5 12.Qc2=) 10.a3 a6 11.Nb3 Pawn d4, live or die! 11...ab5 12.Nc5 bc5 13.Nd2?? (better 13.Qc5 Bd7 14.Bd4+/-) 13...Na6 14.h3 (14.e4 de3! 15.fe3 Re8-+) 14...Qd5 (14...c4!? 15.g4 Bg6 16.g5-+) 15.Rg1 c4 16.dc4 bc4 (16...Qe6 17.Qc1 Nc5 18.Kd1-+) 17.Qc4= Qc4 (17...c5!?=) 18.Nc4+= Nc5 (better 18...Be6!? 19.e3 de3 20.Ne3 Ne4+=) 19.Bd4+/- Nb3 20.Ra2?? (better 20.Bf6 gf6 21.Ra2+/-) 20...Nd4-+ 21.e3 Nc2 22.Ke2 (22.Kd1 Nb4! 23.Rd2 Be6-+) 22...Rfd8 23.g4 (23.Kf3 Nd5 24.Rb2 Na3 25.Rb3 Nc4 26.Bc4-+) 23...Bd3 24.Kf3 Ne1 25.Kg3 Bc4 (better 25...Ne4 26.Kh2 Nf3 27.Kg2 Ng1 28.Kg1 Bc4 29.Bc4 Rd2-+) 26.Bc4 Ne4 27.Kh2?? (27.Kf4 Ra4 28.Re1 Rc4 29.Kf3-+) 27...Nd6 (better 27...Nf3 28.Kg2 Ng1 29.Kg1 Rd2-+) 28.Be2+= Nf3 (better 28...Ne4!? 29.Re1 Nf2+=) 29.Bf3+/- Rab8 (29...Ra5 30.Rd1+/-) 30.Kg3 (30.Rc1 Rdc8+-) 30...Rb3 (30...Rb5 31.Rc2 c5 32.Rd1+-) 31.Rd1 (31.a4!? c5+-) 31...Nc4?? (better 31...Kf8+-) 32.Rd8 1-0. Jimito100 (2030) - Leodoci (1980), Rated Bullet game, lichess.org, 2020.

5.cd4 ed4 6.Nf3 Bd6 7.Nd4+= 0-0 8.Nf3 (8.Qc2 Re8+=) 8...Qe7 (8...Re8 9.e3=) 9.Nc3+= c6 10.a4 cb5 (10...Rd8 11.Qc2+=) 11.ab5 Be6 12.e3 Nbd7 13.Be2 Rac8 (13...Rfc8 14.Nd4+/-) 14.0-0 (14.Ra7 Ra8 15.Rb7 Qd8+-) 14...Ne5 (14...Ra8!?+/-) 15.Ra7 Nf3 (15...Ra8 16.b6+-) 16.Bf3 Bb8 (16...Rb8 17.b6+-) 17.Rb7 Qd6 18.Qa1?? (better 18.g3+-) 18…Qh2 0-1. Jimito100 (1985) - QueenMaster77 (2025), Rated Bullet game, lichess.org, 2020.

4.e3 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 e4 9.Ng1 f5 10.d3 Nf6 11.de4 Ne4 12.Bc4 Nd7 13.ed4 Nb6 14.dc5 Qd1 15.Kd1 Nc4 16.Nc3 Nf2 17.Ke2 Nh1 18.Nd5 b6 19.c6 Nd6 20.Nf3 Nb5 21.Ne5 Ba6 22.Kf3 Nd6 23.Bb2 Ne4 24.Ba3 Ba3 25.Nc7 Ke7 26.Na6 Rc8 27.c7 Bd6 28.Nc6 Kd7 29.Na7 Rc7 30.Nc7 Bc7 31.Nb5 Be5 32.c4 Bh2 33.Nd4 g6 34.Ne2 Be5 35.g3 Nhg3 36.Ng3 Ng3 37.Ke3 Kc6 38.Kd3 Kc5 0–1. RichardSommer (2010) – alquien (2105), lichess.org, 2020.

5.c4 ab5 6.cb5 d3 (better 6...Nf6!?=+) 7.Be5+– Qd5 (7...Nd7!? 8.Bd4 Nc5+–) 8.Bc7 Nd7 9.b6 Bb4 10.Nh3 1–0. Silent Move (2115) – sle, redhotpawn.com, 2015.

5.ed4 ab5 6.de5 Nc6 7.Bb5 Bd7 8.f4 Bc5 9.Nf3 Ra5 10.a4 Qa8 11.d4 Bb6 12.d5 Nb4 13.c3 Bb5 14.cb4 Ra4 15.Ra4 Qa4 16.Qa4 Ba4 17.Nc3 Bb3 18.Ke2 Ne7 19.Ra1 0-0 20.Ne4 Bd5 21.Kd3 Nc6 22.Nc3 Nb4 23.Kd2 Bf3 24.gf3 Bd4 25.Ra7 Ba7 0–1. RichardSommer (1995) – gregorylars (2060), lichess.org, 2020.

5.ed4= ed4 6.Qe2 Be7 (6...Ne7 7.Nf3=) 7.Nf3 (7.Qe5 Nf6 8.Qd4 Bd7=) 7...c5= 8.bc6 (8.c3!? Bd7 9.cd4 Bb5 10.d3+=) 8...Nc6+= 9.d3 (9.c3 Qb6 10.Bc1 Nf6+=) 9...Nf6–/+ 10.Nbd2 (10.c3 dc3 11.Nc3 0-0–/+) 10...Be6 (10...0-0 11.Qd1–/+) 11.Nb3 Increasing the pressure on the isolated pawn on d4 (11.Ng5 Bg4 12.f3 Bf5–/+) 11...Bb4 (11...Bb3 12.ab3 0-0–/+) 12.Nfd2? (12.Kd1 0-0 13.Nbd4 Nd4 14.Bd4 Ba2+=) 12...a5 (better is 12...0-0!? 13.Qd1 a5–+) 13.a3–/+ Bc3 14.Bc3 dc3 15.Ne4 Ne4 (15...0-0 16.Nbc5–/+) 16.Qe4 (16.de4 Bb3 17.cb3 Nd4–/+) 16...Qd6 (16...0-0 17.Kd1 Re8 18.Nc1–+) 17.Be2 (17.Nc1 0-0 18.Ne2 Rfe8–+) 17...0-0–+ 18.0-0 Bb3 19.cb3 Rfe8 (better is 19...Nd4 20.Bf3 Nb3–+) 20.Qf3?? (better is 20.Qg4–+) 20...Nd4 21.Qf7 (21.Qb7 Ne2 22.Kh1–+) 21...Kf7 22.Bh5 g6 23.Rfc1 gh5 (23...gh5 24.Rc3 Ne2 25.Kh1 Nc3–+) 0–1. Meybohm,Dirk – Cuno, corr, 1986.

5.ed4= ed4 6.Nf3 c5=.

5.Nf3 Nd7 6.ed4+= e4 7.Qe2 Qe7 8.Ne5 Ngf6 (8...ab5 9.Nc3 (worse is 9.Qe4 f6+=) 9...Ngf6 10.Nb5+/– (worse is 10.Qb5 c6 11.Qe2 Ne5 12.de5 Qe5=)) 9.ba6+/– ba6 10.Na3 (10.Qe3+/–) 10...a5 (10...Qe6!?+/–) 11.Nb5 (better is 11.Qb5 Ra6 12.Qc4 Ne5 13.de5+–) 11...Ba6?? (better is 11...Nb6+–) 12.Nc7 Kd8 13.Na6 Ne5 14.de5 (14.de5 Qb7 15.Bc3+–) 1–0. dwtu – gpbo, internet, 2009.

5.Nf3 de3!? 6.fe3 e4+=.

4.e3 b6

5.ed4 ed4 6.Nf3 Bc5 7.c3 (7.Qe2!? Ne7 8.Qe4+/–) 7...dc3 (7...d3 8.Qb3+=) 8.Bc3 (worse is 8.dc3 Bf2 9.Ke2 Qd1 10.Kd1 a6–/+) 8...f6 9.Be2 Bg4 10.0-0 a6 (10...Ne7 11.Qa4 Be6 12.Re1+=) 11.a4 (11.Ng5 Qd5 12.Bg4 Qg5 13.Re1 Ne7+/–) 11...a5 (11...ab5 12.ab5 Ra1 13.Ba1+=) 12.Ne1 (12.Ng5 Qd5+/–) 12...Bf5 13.Na3 Ba3 14.Ra3 g6 (14...Ne7!?+=) 15.Nf3 Qd6 16.Re1?? (16.Bb2 c5+–) 16...Ne7?? (better is 16...Qa3!? 17.Bd3 Kd8–+) 17.Ng5?? (better is 17.Bb2 0-0 18.Bc4 Kh8 19.Ng5+–) 17...h6–/+ 18.Nf3 Qa3–+ 19.Bf6 Rh7 20.Qc2?? Bc2 0–1. Valpa – Newplayer, playchess.de, 2006.

5.Qf3 c6 +/–.

5.Nf3 Nd7 6.Bc4 Nh6? (6...de3!? 7.de3 Bb7+=) 7.0-0 Nc5? (better is 7...de3 8.de3 Bb7+/–) 8.Ne5+– Be6 9.Be6 Ne6 10.Bd4 Nd4 11.ed4 Qd4 (11...Qd4 12.Qf3 Qe5 13.Qc6 Kd8+–) 0–1. Jokmin,Alex – Brough,Carl, SN–2010-0-00236, 2010.

5.Nf3 de3 6.fe3 e4 7.Nd4 (7.Bc4 Nh6 (7...ef3 8.Qf3 Qh4 9.g3 Qc4 10.Qa8+=) 8.Ne5 Qg5=) 7...Nf6 8.c4 Bc5 9.Be2 0-0 10.0-0 Qd6 11.d3 ed3 12.Bd3 (12.Bf3 c6=) 12...Bg4 (12...Ng4 13.Rf4 Ne3 14.Qh5–+) 13.Qc2 Nbd7 14.Nd2 Rae8 15.h3?? (15.Rae1 Bb4=) 15...Be6?? (better is 15...Re3 16.N2b3 Bh3 17.gh3 Qg3 18.Qg2 Rd3 19.Nc5 Nc5 20.Qg3 Rg3 21.Kh2 Rd3–+) 16.Ne6 (16.Ne4 Ne4 17.Be4 h6+=) 16...Re6 17.Rae1 (17.Ne4 Qe7 18.Nf6 Nf6 19.Bf6 Rf6 20.Bh7 Kh8+=) 17...Ne5 (17...Be3 18.Kh1 Nc5 19.Rf6 Qd3 (19...gf6?! 20.Bh7 Kg7 21.Nf1+=) 20.Qd3 Nd3 21.Re6 Bd2–/+ (21...fe6?! 22.Re3 Nb2 23.Re6=)) 18.Bf5+= Re7 19.Kh1 g6 20.Be5 Re5 The isolani on e3 becomes a target 21.e4?? gf5–+ 22.ef5 Re1 23.Re1 Rd8 24.Nf3 Qg3 25.Qc3 Bd6 26.Qf6+– Qe1?? 27.Ne1 Re8 28.Nf3 Re2 29.Qg5 Kf8 30.f6 Ke8 31.Qg8 Kd7 32.Qf7 Kc8 33.Qg8 Kb7 34.f7 Rf2 35.f8Q Rf1 36.Ng1 Rf8 37.Qd5 Kc8 38.Qa8 Kd7 39.Qa7 Rb8 40.Nf3 Rf8 41.Ng1 Rf1?? 42.Qb7 Bc5 43.Qc6 Kc8 44.Qe8 Kb7 45.Qc6 Kc8 46.Kh2 Rg1 47.Qe8 (47.Qe8 Kb7 48.Qe4 Kb8 49.Qh7+–) 1–0. captainevans – patinga, playok.com, 2012.

4.e3 c5

5.a4 Bd6 6.a5 Nf6 7.f3 (7.Bc4 0-0=+) 7...Be6 8.a6 (8.f4 ef4 9.ed4 Ng4=+) 8...ba6 9.ba6 (9.f4 ef4 10.ed4 cd4 11.Bd4 0-0–/+) 9...Nc6 (9...Qb6 10.Qc1–+) 10.Bb5–/+ Bd7 (10...Qc7 11.Na3–/+) 11.c4 (11.c4 Nb4 12.Ba3–/+; 11.Na3 Rb8–/+). Delboy Smith (1795) – delightful_porridge (1705), ChessWorld.net, 2016.

5.c4 dc3 6.Bc3 Bd6 7.Qc2 Nf6 8.f3 Be6 9.Na3 0-0 10.Bd3 a6 11.Nc4 ab5 12.Nd6 Qd6 13.Bb5 c4 14.Qb2 Na6 (better is 14...Nfd7!? 15.Ne2 Nc5+=) 15.Ba6 ba6 16.a3?? (16.Be5!? Qd3 17.Ne2+/–) 16...Rab8 (16...Nd7 17.Ne2–/+) 17.Qc2 (17.Be5!? Rb2 18.Bd6=) 17...h6 (17...Nd5!?–/+) 18.Bb4+= Qd3 (better is 18...Rb4!? 19.ab4 Nd5+=) 19.Qd3+= cd3 20.Nh3 (20.Bf8!? Kf8 21.h4+=) 20...Rfc8 21.0-0? (21.Nf2 Bc4+=) 21...Bd5 (better is 21...Bh3!? 22.gh3 Rc2–+) 22.e4+= Be6 23.Nf2 Bc4 24.Rac1 h5 25.Rc3 h4 26.Rfc1+– Be6 27.Rc8 Bc8? 28.Bd6 Ra8 29.Be5 h3 30.gh3 Nh5 31.Nd3 Bh3 32.Nf4 Nf4 33.Bf4 Rd8 34.Rc4 f6 35.Rc6 g5? 36.Be3 g4 37.fg4 Bg4 38.Rf6 Be2 39.Kg2 Kg7 40.Rf2 Bd3 41.e5 Be4 42.Kg3 a5 43.Rf6 Re8 44.Bf4 a4 45.Ra6 Kf7 46.Ra4 Rg8 47.Kf2 Rg2 48.Ke3 Bc6 49.Ra7 Ke6 50.a4 Rg1 51.a5 Ra1 52.Kf2 Ra2 53.h4 Kf5 54.Rf7 Kg4 55.Rf6 Bb7 56.Rb6 Ra5 57.Rb7 Kf4 58.e6 Ra8 59.Rf7 Ke5 60.e7 Re8 61.h5 Ke6 62.Rh7 Kf6 63.d4 Ke6 64.Kf3 Kd7 65.Ke4 Rg8 66.Kf5 Rg2 67.h6 Rf2 68.Ke5 Re2 69.Kd5 Rg2 70.Rg7 Rh2 71.h7 Rh5 72.Kc4 Ke8 73.Rg8 Ke7 74.h8Q Rh8 75.Rh8 Kd6 76.Rh5 White prepares d5 76...Kc6 If Black now only could play d5+... 77.d5 Kd6 78.Rh6 Ke7 79.d6 Kd7 80.Kc5 Kc8 81.Kc6 Kb8 82.Rh7 1–0. lindsey000 – raven_king, gameknot.com, 2013.

5.c4 Bd6 6.Be2+=.

5.c4 Nf6 6.d3 Bd6 7.Nf3 Nbd7 8.a4 0-0 9.Ba3 Qe7 10.Be2 de3 11.fe3 e4 12.de4 Ne4 13.0-0 Ne5 14.Bb2 Nf3 15.Bf3 Qh4 16.g3 Bg3 17.hg3 Qg3 18.Bg2 Qe3 19.Kh1 Nf2 20.Rf2 Qf2 21.Bc3 Be6 22.Nd2 Rad8 23.Qf3 Rd2 24.Bd2 Qd2 25.Rd1 Qh6 26.Kg1 Bc4 27.Qb7 Qh5 28.Rc1 Bb3 29.Qa7 c4 30.b6 Qg5 31.Rf1 c3 32.Qc7 Bd5 33.Rf2 Bg2 34.Rg2 Qc1 35.Kh2 Qb2 36.Rb2 cb2 37.Qc2 1–0. RichardSommer (2185) – kamelsba (2050), lichess.org, 2020.

5.c4 Nf6 6.Nf3 e4 7.Ne5 Qd6 8.f4 Nbd7 9.Nd7 Bd7–/+.

5.c4 Nf6 6.Nf3 e4 7.Ng1 Be7 (7...a6 8.a4–/+) 8.ed4 cd4 9.d3? (better is 9.f3–/+) 9...Bb4–+ 10.Nd2 e3 11.fe3 de3 12.Qe2 (12.Ngf3 Bg4 (12...Bd2?! 13.Nd2 ed2 14.Qd2–+) 13.Be2 Bf3 (13...Bd2?! 14.Nd2 ed2 15.Qd2–+; 13...ed2?! 14.Nd2 Qe7 15.Bf6 gf6 16.Kf1–+) 14.Bf3 Qd3–+) 12...Bd2 13.Kd1 Bg4 14.Nf3 0-0 15.h3 (15.Kc2 Nbd7–+) 15...Bf3 (15...Nh5 16.Be5 Qa5 17.Kc2–+) 16.gf3 (16.Qf3 Qa5 17.Kc2 Nbd7–+) 16...Nh5 (better is 16...Qa5 17.Kc2–+) 17.Qg2 (17.Rg1 f6 18.Kc2 a6–+) 17...f6 (17...Qa5!? 18.a4 Bc3 19.Qc2 Bb2 20.Qb2–+) 18.Rg1 Rf7 (18...Qa5 19.a4 Be1 20.Qc2–+) 19.Be2 (19.Qg4 Qa5 20.a4 e2 21.Be2–+) 19...Nf4 20.Qg4 (20.Qf1 a6 (worse is 20...Ne2 21.Qe2 a6 22.a4–+) 21.a4 ab5–+) 20...Nd3 (better is 20...Qa5 21.Kc2 Ne2 22.Bf6 Qa4 23.Kb2 Qb4 24.Kc2 Ng1 25.Rg1–+) 21.Bd3 Qd3 22.Qc8 Rf8 23.Qe6 Kh8 24.Qe7 (24.Qe4 Qd7 25.Ke2–+) 24...Nd7 25.Qg7 1–0. Francia,Pasquale – Capa 2, 5 minutes game, 2005.

5.c4 Nf6 6.Nf3 e4 7.Ng5 h6 8.Nh3 Bh3 9.gh3 Bd6 (9...a6 10.ed4 cd4 11.f3–/+) 10.Bg2 d3 11.Bf6 (11.Nc3 Be5+=) 11...Qf6= 12.Nc3 Nd7 (12...Be5 13.Ne4 Qe7 14.Rb1+=) 13.Ne4+/– (13.Be4?! 0-0-0=) 13...Qg6 14.Nd6 Qd6 15.Bb7 Rb8 16.Be4 Nf6 17.Bc6 Nd7 18.Qg4 g5 (18...Rg8 19.Rc1 Rd8 20.Qe4 Kf8 21.Rb1+–) 19.Qf5 Rd8 20.h4 0-0 (20...gh4 21.Rb1+–) 21.Be4 Nf6 22.hg5 Ne4 23.Qe4 hg5 24.Rg1 Qf6 25.Rb1 Rfe8 26.Qh4 Re5 27.f4 Rd4 (27...Rf5+–) 28.fe5 Rh4 29.ef6 (29.ef6 Rh2 30.Rg5 Kh7 31.Rb2 Rh1 32.Kf2+–) 1–0. Fritz 10 – NN, 2007.

5.c4 Nf6 6.Nf3 Bg4 7.Be2 (better is 7.h3 Bf3 8.Qf3+=) 7...Be7?? (7...d3 8.Bf1 e4 9.h3–/+) 8.Qc2?? (8.Ne5!? Be2 9.Qe2 (worse is 9.Ke2 Qd6 10.f4 Nbd7=) 9...de3 10.Qe3+/–) 8...0-0 (8...e4 9.Ng1 d3–+) 9.Ne5= Be2 10.Ke2 Nbd7 (10...de3 11.de3 Bd6 12.Rd1+=) 11.Nd7 (11.ed4!? cd4 12.Bd4 Ne5 13.Be5+=) 11...Qd7= 12.Re1 Rad8 (12...de3 13.de3 Qd6 14.Nd2+=) 13.ed4+= cd4 14.d3 (14.Kf1 Rfe8+=) 14...Bd6 (better is 14...Ng4=) 15.g3?? (15.Kf1 Bh2 16.Nd2 Qg4+=) 15...Qh3?? (15...Rfe8 16.Kd1 Re1 17.Ke1 Re8 18.Kd1 Qg4 19.f3 Qf3 20.Qe2 Qe2 21.Kc1 Qe1 22.Kc2 Re2 23.Nd2 Qd2 24.Kb3 Qb4) 16.Nd2 (16.Kd1 Bb4 17.Nd2 Rfe8+=) 16...Qh2 (16...Rfe8 17.Kd1+=) 17.Rh1= Qg2 18.Rag1 (18.Bd4 Rfe8 19.Be3 Bc5–/+) 18...Rfe8 19.Ne4! Ne4 (19...Qe4 20.de4) 20.Rg2 Ng3 21.Kd1 (21.Kf3!? Nh1 22.Rg1 Nf2 23.Bd4 Nh3 24.Rg7 Kf8+–) 21...Nh1 22.Rh2?? (better is 22.Rg1 Nf2 23.Qf2+–) 22...Bh2–+ 23.f3 Bf4 24.Qg2 Ng3 25.c5 Be5 26.a4 Nf5 27.a5 g6 28.Qg5 Bg7 29.c6 Ne3 30.Kc1 White gets deadly initiative 30...bc6 31.bc6 h6 32.Qc5 Rc8 33.c7 Bf8 34.Qd4 Do you see the mate threat? 34...Rc7 35.Kb1 Nf5 36.Qh8 1–0. toll (1700) – DrEcho (1670), ICC, 2003.

5.bc6 Nc6 6.Bb5 Bc5 (6...Qb6 7.a4=+) 7.Ne2 (7.Nf3 Bg4=) 7...Nge7 8.0-0 0-0 9.c3 (9.ed4 ed4 10.c3 Qb6-/+) 9...d3 10.Bd3?? (better 10.Nc1 Qb6 11.Qa4-/+) 10...Qd3-+ 11.Nc1 Qg6 12.Ne2 Bh3 13.Ng3 Nf5 (13...Bg4 14.f3 Be6 15.Ne4-+) 14.d4?? (better 14.gh3 e4 15.Qg4 Qg4 16.hg4 Ng3 17.fg3=+) 14...Ng3 (better 14...Bg4 15.Qc1 Bb6-+) 15.hg3 Bg2 (better 15...Bg4!? 16.f3 Bf5 17.dc5 Rfd8-+) 16.Kg2-/+ ed4 (16...Rad8 17.Qa4 Bd6 18.Rd1-/+) 17.cd4=+ Rad8 18.Qf3 Be7 19.Rh1 Rd5?? (better 19...Rfe8=) 20.Qd5+- Rd8 21.Qf3 h6 (21...Qc2 22.Bc3+-) 22.Nd2 (22.Nc3 Qd6+-) 22...Qc2 23.Nc4! Qc4 24.Rh6?? (better 24.Rhc1 Qd3 25.Rab1+-) 24...Qc2?? (24...gh6!? 25.Rh1 Bg5 26.a3-+) 25.Rah1?? (better 25.Qg4 g6 26.Rah1+-) 25...gh6-/+ 26.Qg4 Bg5?? (better 26...Qg6 27.Qg6 fg6 28.Rh6 Kg7-/+) 27.Rh6+- Rd5 28.Qc8?? (28.e4 Kg7 29.Rh5+- (29.ed5?! Kh6 30.dc6 bc6+/-)) 28...Kg7?? (better 28...Bd8 29.Qg4 Rg5-/+) 29.Qh8 1-0. Bessiere,Alain - Callebaut,Katia, 3rd Espalion Open, 2018.

5.d3 Qa5 6.Nd2 Qb5 7.Rb1 Qa5 8.a3 Nc6 9.Ngf3 Bg4 10.Be2 Nf6 11.Nd4 Nd4 12.Bg4 Nc2 13.Ke2 Ng4 14.Qc2 Bd6 15.h3 Nf6 16.Nc4 Qc7 17.Nd6 Qd6 18.Rhc1 b6 19.d4 ed4 20.ed4 0-0 21.dc5 Rfe8 22.Kf1 Qh2 23.f3 Nd5 24.Qf5 Ne3 0–1. RichardSommer (2155) – zarrrazka (2145), lichess.org, 2020.

5.ed4 cd4 6.c4 dc3 7.Bc3 Bc5 8.a4 b6 9.Nf3 Nd7 10.d4 ed4 11.Bd4 Ngf6 12.Bc5 bc5 13.Bc4 0-0 14.0-0 Qb6 15.Nc3 Bb7 16.Ng5 Ne5 17.Qb1 Ng6 18.Nge4 Qd8 19.Nf6 Qf6 20.Nd5 Qg5 21.Qc1 Bd5 22.Qg5 Bc4 23.Rfe1 Be6 24.Qc5 Nf4 25.Re3 Nd5 26.Rg3 Rac8 27.Qa7 Rc7 28.Qe3 Rfc8 29.Qg5 g6 30.h4 Kg7 31.h5 h6 32.Qe5 Kh7 33.hg6 fg6 34.Qe6 Rg7 35.Qc8 Nf4 36.Rc1 Ne2 37.Kh2 Ng3 38.Kg3 Rf7 39.Rc7 Rc7 40.Qc7 Kg8 41.b6 Kf8 42.b7 Ke8 43.b8Q 1–0. A_VB – HowsYourClam, lichess.org, 2018.

5.ed4 cd4 6.Bc4 Nf6 7.Nf3 Bd6 8.0-0 0-0 9.Qe2 Nbd7 10.d3 Nb6 (10...Re8 11.c3=) 11.Ne5= Be5 (better is 11...Nc4!? 12.Nc4 Re8=) 12.Qe5+/– Nc4 13.dc4 d3 14.cd3 Qd3 15.Qg5 Qg6 (15...h6 16.Qh4 Ne4 17.Na3+/–) 16.Bf6+– gf6 17.Qf4 Bh3 18.Qf3 Be6 19.Nc3 (19.Re1 Bc4 20.Na3 Be6 21.Qb7 Rfd8+/–) 19...Bc4+/– 20.Rfd1 Rfd8 (20...b6!?+/–) 21.a4 (21.Qb7!? Bd3+–) 21...b6+/– 1–0. DEFFM – GuestHYTT, freechess.org, 2018.

5.ed4 cd4 6.Be2 Nf6 7.Nf3 Bd6 8.0-0 0-0 9.a4 a6 (9...Qc7 10.Re1+=) 10.Ba3 (10.Na3 Bf5=) 10...Qe7 (10...e4 11.Ne1–/+) 11.Bd6 (11.Re1 ab5 12.Bb5 Bg4=) 11...Qd6+= 12.Na3 Bd7?? (better is 12...e4 13.Ne1 Re8+=) 13.Nc4+/– Qc7 14.Nce5 Qd6 (14...Be6 15.Re1+/–) 15.Nd7 (15.c3 ab5 16.ab5 Ra1 17.Qa1 dc3 18.dc3 Qc5+/–) 15...Nbd7 16.Ra3?? (16.a5 Rfe8+/–) 16...Nc5 (better is 16...Qa3 17.Qa1 Qb4–+) 17.Qa1 The isolani on d4 becomes a target 17...d3 (17...Ne6!?+/–) 18.Bd3+– Nd3 (18...Rfe8 19.Bc4+–) 19.Rd3 (19.cd3?! ab5 20.Rb1 b4=) 19...Qb4 20.Rb3 Qc4 21.Rc3 (21.d3 Qc7+–) 21...Qb4 (21...Qg4 22.Ra3+–) 22.Rb1 Qd6 23.Rd3 Qc5 24.Qb2 (24.Qc3 Qh5+–) 24...Rfe8 25.Re3 Red8 (25...Ng4 26.d4 Qc4 27.Re8 Re8 28.h3+–) 26.d4 Qc4 27.Qb3 Qc7 (27...ab5 28.ab5 Qb3 29.Reb3+– (29.Rbb3?! Rd4 30.Kf1 Rda4+/–; worse is 29.cb3 Nd5+/–)) 28.c4 ab5 29.Qb5 Ra5 (29...b6 30.d5+– (30.Qb6?! Qc4 31.Ra3 Rdc8+–)) 30.Qb4 Qc6 (30...Rd7+–) 31.d5 (better is 31.Qa5 Rf8 32.Qb5+–) 31...Qa4 0–1. GuestPBWQ – rhorhorho, freechess.org, 2017.

5.ed4 ed4 6.Nf3 Qe7 7.Be2+= Bf5 8.0-0 Qd6 9.Re1 Be7 10.Bc4 Be6 (better 10...Nd7!?+=) 11.Be6+– fe6 12.Ba3 (12.c3!? Qd7 13.Qb3+–) 12...Nd7+= 13.Nd4?? Attacks the backward pawn on e6 (better 13.c3 e5 14.cd4 ed4 15.Qb3+=) 13...e5?? (better 13...Qd4 14.Nc3 e5–+) 14.Nf5 Qf6 15.Ne7 Ne7 16.Bb2 (16.Nc3 0-0 17.Ne4 Qf7+–) 16...0-0 17.Nc3 (better 17.Qe2!?+–) 17...Qf2= 18.Kh1 Nf5 19.Ne4 Qh4 20.Qe2 b6 (20...Rf7 21.a4=) 21.Qc4+= Kh8 22.Qe6 Qe7 23.Qe7 Ne7 24.Ng3 Ng6 25.a4 Rae8 (25...a6 26.Ne4=) 26.a5+= Rf2 (26...Rd8 27.Kg1+=) 27.Ne4+– Rff8 28.g3 h6 29.ab6 ab6 30.Ra7 Re7 31.Kg2 Ref7 32.h4 Nf6 (32...h5 33.Nd6 Re7 34.d3+–) 33.Rf7 Rf7 34.Nd6 Rd7 35.Nc4 Ng4 (35...Kg8 36.d3+–) 36.d3 (36.h5 Ne7+–) 36...Rb7 (36...h5!?+–) 37.h5+– (37.Ne5?! N6e5 38.Be5 Re7=) 37...Nf8 38.Be5 Rd7? (better 38...Re7+–) 39.Bd6 (39.Nb6?! Rb7 40.Bd6 Rb6 41.Bf8 Rb5+–) 39...Rd8 40.Bc7 Rc8 41.Bb6 Nd7 42.Ba5 Ngf6 43.b6 Nb8 (43...Rb8 44.Rb1+–) 44.b7 Rc6 (44...Rg8 45.Bc3 Nh5 46.Re5+–) 45.Bd8 (45.Re7 Kh7 46.Ne5 c4 47.Nc6 Nc6 48.dc4 Ne7+–) 45...Nfd7 (45...Kg8 46.Bf6 Rf6 47.Re8 Rf8 48.Rc8+–) 46.Re8 Kh7 47.Bb6! Na6 (47...Nb6 Deflection from b8 48.Rb8) 48.Rc8 Nab8 (48...Re6 49.Bc5! Re2 50.Kh3 Rc2+–) 49.Ba7 Ra6 50.Bb8 (50.Bb8 Ra4 51.Ne5+–) 1–0. jokerone (2365) – petrobbo (1980), ChessWorld.net, 2012.

5.Qe2 Qe7=.

5.Nf3 Bd6 6.ed4 cd4 7.Bc4 Nh6 (7...Nd7 8.0-0=) 8.h3 (8.Qe2 Qe7=) 8...Be6 (8...0-0!?+=) 9.Be6= fe6 10.Qe2 Nd7 11.0-0 (11.c3 0-0+=) 11...0-0 12.Nd4 (better is 12.c3 Rf4 13.Re1+=) 12...ed4–/+ 13.Qe6 Nf7 14.Bd4 The passed pawn on d2 will quickly become a dangerous weapon 14...Be5 15.Be5 Nde5 16.Qb3 (16.Re1 Re8 17.Re5 Re6 18.Re6 Qc8–+) 16...Qd4 17.c3 Qc4 (better is 17...Qd3!?–/+) 18.d4= Qb3 19.ab3 Nd7 20.c4 Nd6 21.Nc3 a6 (21...Kf7!?=) 22.ba6+/– ba6 The passed pawn on c4 quickly leads to threats 23.Rfd1 Nf6 24.f3 a5 (24...Rfb8 25.Ra3+=) 25.c5+/– Nf5 26.d5 Ne3 27.Rd2 (27.Rd3 Rfe8+–) 27...Rfb8 (better is 27...Rfd8 28.d6 Rab8+/–) 28.d6 (better is 28.Re1!? Nfd5 29.Nd5 (worse is 29.Rd5 Nd5 30.Nd5 Rb3+=) 29...Nd5 30.Rd5 Rb3 31.Rd7+–) 28...Rb3= 29.Rc1 Rc8 30.Ne4 Ned5 (30...Ne4 31.d7 Rd8 32.fe4 Rb4+–) 31.c6+/– h6 (better is 31...a4!?+/–) 32.d7+– Nd7 33.Rd5 Nf8 (33...Nb8 34.c7 Kf7 35.Rd8 Rc7 36.Rc7 Kg6 37.Rcc8+–) 34.Ra5 Rb6 35.Rac5 (35.c7 Rb7 36.Rac5 Ne6+/–) 35...Ne6 (35...Rc7 36.Kf2 Ne6 37.R5c4+–) 36.R5c4 Rc7 37.Nd6 Nd8 38.Nf5 Kf7 39.Rd1 (better is 39.Nd4+–) 39...Kf6?? (better is 39...Rbc6!? 40.Nd6 Ke7 41.Rc6 Nc6+/–) 40.Ng7 (better is 40.Ne3 Rbc6 41.Rc6 (41.Rd8?! Rc4 42.Nc4 Rc4+/–) 41...Rc6 42.Rd8 Rc1 43.Kf2+–) 40...Kg7 41.Rd8 Rcc6 42.Rc6 Rc6 43.Rd5 Kg6 44.Kh2 (44.Kh2 Rc2 45.f4+–) 1–0. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

5.Nf3 f6 6.ed4 cd4 7.Bc4 Qa5 8.c3 dc3 9.Bc3 Qc7 10.Qb3 Ne7 11.Bf7 Kd8 12.0-0 (12.d4 e4 13.Nfd2 f5+/–) 12...Nd7 (better is 12...Bg4!?=) 13.d4+/– Nf5 (better is 13...e4!? 14.Nfd2 f5+/–) 14.de5+– Nc5? (better is 14...fe5 15.Ng5 Nc5 16.Qd5 Bd6 17.Be5 Bd7+–) 15.Qd5 Bd7 16.e6 Ne7 17.Qd4 (17.Qd1 Nc8 18.ed7 Nd6+–) 17...Ne6? (17...Nf5 18.Qd2 Nd6 19.ed7 Nf7+–) 18.Be6 Nf5 (18...Ke8 19.Bc4 Nf5 20.Re1 Kd8+–) 19.Bf5 Bc5 (19...Qd6 20.Qe4 Rc8 21.Nd4+–) 20.Qd3 (better is 20.Qd5 Bd6 21.Ba5 Qa5 22.Qd6 Qc7+–) 20...Ke7 (20...Qd6 21.Rd1 Bf5 22.Qe2+– (22.Qf5?! Qd1 23.Ne1 Re8+–)) 21.Re1 Kf8 22.Bd7 Qb6 23.Bd4 Qd6 24.Bc5 (24.Bc5 Qc5 25.Nd4+–) 1–0. GuestCZCG – GuestCWTT, freechess.org, 2017.

5.h4 Nf6 6.Nf3 Nbd7 7.Ng5 (7.ed4!? ed4 8.Bc4+=) 7...h6–/+ 8.Nf7? (better is 8.Nh3–/+) 8...Kf7–+ 9.Bc4 Ke8 10.0-0 Nb6 11.Be2 h5 (11...Be6 12.h5–+) 12.a4 Be6 13.f4 ef4 14.Rf4 (14.ed4 Bd6–+) 14...Nbd5 15.Rf6 (15.Rf1 Ng4 16.Qe1 de3 17.de3 Nge3 18.Bf3–+) 15...Nf6 (15...Qf6!? 16.Qe1–+) 16.ed4 cd4 17.Na3 (17.Qe1 Kf7–+) 17...Bc5 18.Bf3 Ng4 19.Qe1 Kf7 (19...d3 20.Kh1 Nf2 21.Kg1–+) 20.d3 Qc7 21.Bg4 hg4 22.Qf2 Kg8 23.g3 (23.Bd4 Bd4 24.Qd4 Rh4–+) 23...Rf8 24.Qe1 Rh6 (24...Qd6 25.Kg2–+) 25.a5 (25.Bc1 Rhf6 26.Bg5 Bb4–+) 25...Rf3 26.Kg2 (26.b6 Rg3 27.Kf1 Rf6 28.Ke2 Re3 29.Kd2 Bb4 30.c3 Qh2 31.Qe2 Qe2 32.Kc1 Rf1) 26...Rhf6 (26...Rg3 27.Kf1 Rf6 28.Ke2 Re3 29.Kd2 Bb4 30.c3 Qh2 31.Qe2 Qe2 32.Kc1 Rf1) 27.Nc4 (27.b6 Qc6 28.Qe4 Bd5 29.ba7 Ba7 30.Qg4 Rf2 31.Kg1 Rg2 32.Kh1 Rg3 33.Kh2 Qc7 34.Qe6 Re6 35.Re1 Rg2 36.Kh3 Qg3) 27...Rf2! 28.Qf2 Rf2 29.Kf2 Bc4 (29...Qf7 30.Kg1 Qf3 31.a6 Bd5 32.Ne3 de3 33.ab7 Qf2) 30.dc4 d3 (30...Qf7 31.Kg2–+) 31.Kg2 Qe7 32.Rf1 (32.cd3 Qe2 33.Kh1 Qb2 34.Rg1 Bg1 35.Kg1 Qb1 36.Kh2 Qd3 37.a6 Qe2 38.Kg1 ba6 39.c5 ab5 40.c6–+) 32...Qe2 (32...Qe2 33.Rf2 Qf2 34.Kh1 Qg1) 0–1. Roell,Uwe – Kloos,Gerhard, Bochum Post op, 1990.

5.Qh5 Bd6=.

4.e3 Bc5

5.c4 Nf6 6.a4 0-0 7.Nf3 Re8 8.Be2 c6 9.0-0 Bd7 10.Ng5 cb5 11.ab5 a6 12.Bf3 Ra7 13.Be2 ab5 14.cb5 Ra1 15.Ba1 b6 16.Bd3 Be6 17.Ne6 Re6 18.Bc4 Re8 19.ed4 Bd4 20.Bd4 Qd4 21.d3 Rd8 22.Qf3 Nbd7 23.Nd2 Nc5 24.Nb3 Nb3 25.Bb3 Qb4 26.Bc4 Qc3 27.Qc6 Nd7 28.Qc7 Rf8 29.Qd7 e4 30.g3 ed3 31.Qd3 Qd3 32.Bd3 Rd8 33.Be2 Rd2 34.Bf3 Kf8 35.Bc6 f5 36.Re1 g6 37.Kg2 h5 38.h4 Kf7 39.Re5 Kf6 40.Re3 g5 41.hg5 Kg5 42.Re6 f4 43.gf4 Kf4 44.Rf6 Kg5 45.Rf3 h4 46.Rh3 Rd6 47.Kf3 Rf6 48.Ke3 Rf4 49.f3 Rb4 50.Kd2 Rb2 51.Kc3 Rf2 52.Kd4 Rb2 53.Ke5 Rb4 54.Kd6 Rd4 55.Kc7 Kf4 56.Kb6 Rd3 57.Rh4 Ke3 58.f4 1–0. A_VB – muginyaga, lichess.org, 2019.

5.ed4 ed4 6.Nf3 c6 7.c4 Bd7 8.Be2 cb5 9.cb5 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nf6 13.Nd4 Bd4 14.Bd4 0-0 15.0-0 Re8 16.Nc3 Ne4 0–1. axtur777 – iceandfire21795, lichess.org, 2019.

5.ed4 Bd4 6.Bd4 Qd4 7.Nc3 Bg4 8.Be2 Be2 9.Nge2 (worse is 9.Ke2 Nf6+=) 9...Qg4 10.0-0 Nf6 11.h3 Qf5 12.Ng3 Qg5 13.Nge4 Ne4 14.Ne4 Qf4 15.Nc5 Qc4 (15...Nd7 16.Nd7 Kd7 17.a4=) 16.d4 0-0 (16...ed4? 17.Re1 Kd8 18.Nb7 Kc8 19.Qf3+–; 16...Qd4 17.Qd4 ed4 18.Rfe1 Kd8 19.Nb7 Kc8 20.Nc5+/–) 17.Qd3 Qd3 18.cd3 b6 19.Nb3 ed4 20.Rfe1 (20.Rfc1!? Rc8 21.Rc2=) 20...c5+= 21.Re7 Rd8 22.Rae1 Kf8 23.Rb7 (23.a4!?–/+) 23...Rd7–+ 24.Rd7 Nd7 25.f4 a6 26.a4 (26.ba6 Ra6 27.Nc1 Ra3–+) 26...ab5 27.ab5 Ra2 28.Ra1 Rb2 29.Ra3 Nf6 30.Nc1 Rb1 (30...Rb5?! 31.Kf2–+) 0–1. henkf (1660) – fatt74 (1750), gameknot.com, 2012.

5.e4 Nf6–/+ 6.f3 (6.Bd3 0-0–/+) 6...Bd7 7.c3 (7.Ba3 Qe7 8.Qc1 a6 9.Bc5 Qc5–/+) 7...c6 (7...Ne4 8.cd4 Qh4 9.g3 Ng3 10.hg3 Qh1 11.dc5 Qg1 12.Qe2 Qg3 13.Kd1–+) 8.a4 (8.cd4 ed4 9.Qb3 Qb6+=) 8...Nh5 (8...Ne4!? 9.cd4 Qh4 10.g3 Ng3 11.hg3 Qh1 12.dc5 Qg1 13.Be5 0-0–+) 9.g3+= a6 10.ba6 ba6 11.Na3 Be6 12.Nc4 Nd7 13.f4 (13.cd4 ed4 14.Qc2 Nhf6+=) 13...Nhf6 (13...d3 14.Bd3 Nf4 15.Bf1 Bc4 16.Bc4 Bg1 17.Rg1–/+) 14.cd4+= ed4 15.e5 Nd5 (15...Ne4 16.Bd3 f5 17.Nf3+=) 16.Ba3 (16.Nf3 Bg4=) 16...Ba3 17.Ra3 0-0 18.a5 (18.Nf3 Nb4=) 18...Nc5 (18...Qe7 19.Qc1–/+) 19.Nf3 Ne4 (19...d3 20.Qc1 Nb4 21.Ne3+=) 20.Bd3 (20.Nd4 Nf4 21.Nc6 Qe8=) 20...Nc5 21.Nb6? (better is 21.Bb1 Bg4 22.Nd6=) 21...Nb6–+ 22.ab6 Qb6 23.Ke2? (better is 23.Qc2 Nd3 24.Qd3–/+) 23...Nd3 24.Kd3 (24.Rd3 Bc4–+) 24...Bf5 (better is 24...Qb5 25.Kd4 Qb4 26.Ke3 Qa3 27.Kf2 Bd5–+) 25.Ke2 d3 26.Kf1 (26.Ke1 Rfb8–+) 26...Qc5 (better is 26...Bh3!? 27.Ke1 Bg2 28.Rf1 Bf1 29.Kf1–+) 27.Rc3 Qb5 28.Nd4 (28.Kg2–+) 28...Qd5 29.Nf3 Bg4 (better is 29...f6!? 30.Kf2 fe5 31.Ne5–+) 30.Kg2 f6 (30...Rfb8 31.Rf1–+) 31.Re1 c5 32.Re3 c4 33.ef6 Rf6 34.Qa4? (34.Re5 Qc6–+) 34...Bf3 (better is 34...Re6!? 35.Qc4 Qc4 36.Rc4 Re3 37.de3–+) 35.Rf3 Rc8 36.g4? (better is 36.Kf2 Rc5 37.Re3–+) 36...Rf4 37.Qd1 (37.Rcd3 Rg4 38.Kf1 cd3 39.Qg4 Rc1 40.Kg2–+) 37...Rg4 (37...Rcf8 38.Rcd3 cd3 39.Kg1 Rf3 40.Qe1 Qd4 41.Kh1 Rf1 42.Qf1 Qe4 43.Kg1 Qg4 44.Qg2 Qd1 45.Qf1 Qf1) 38.Kf1 Qd4 (38...Qg5 39.Rc4 Rg1 40.Kf2 Qg2 41.Ke3 Re8 42.Re4 Re4 43.Kd3 Rd1 44.Ke4 Qg4 45.Kd3 Qf3 46.Kd4 Rd2 47.Kc5 Qd5 48.Kb6 Qb5 49.Kc7 Rd7 50.Kc8 Qb7) 39.Re3 Rf8 (39...Rf8 40.Qf3 Rf3 41.Rf3 Rg1) 0–1. Feiertag,Manfred (1770) – Luebbe,Hermann (1870), remoteschach.de, 2008.

5.Nf3 de3 6.fe3 f6 7.Ne5 fe5 8.Qh5 Kf8 9.Qe5 Qe7 10.Qf4 Nf6 11.Bc4 Be6 12.0-0 Bc4 13.Qc4 Nbd7 14.g4 g5 15.Rf5 h6 16.Bf6 Nf6 17.Rf6 Qf6 18.Qc5 Kg7 19.d4 Rhf8 20.Qc7 Rf7 21.Qg3 Qf1 0–1. RichardSommer (2125) – generalnug (2010), lichess.org, 2020.

5.Nf3 de3 6.fe3 Bg4 (better is 6...f6!?=) 7.Be5+/– f6 8.Bg3 Ne7 9.Be2 a6 10.0-0 ab5 11.Bb5 c6 12.Be2 Nf5 13.Bf2 Nd7 14.d4 Bd6 15.h3 (15.Nbd2 Ne7+/–) 15...Bf3 16.Bf3 Qe7 Attacks the backward pawn on e3 (16...Bb8!? 17.Qd3 Qc7+/–) 17.Qd3 White prepares the advance d5 17...g6 18.g4 (18.e4 Ng7+–) 18...Ng7 19.c4 White plans d5 19...Bb8 20.Qe2 (20.c5+/–) 20...c5? (better is 20...h5 21.Qc2 Nf8+=) 21.d5?? (better is 21.Bb7 Ra7 22.Qf3+–) 21...Qe5–+ 22.Be1 0-0 (better is 22...Qa1 23.Nc3 Be5–+) 23.Bc3+/– Qg3 24.Qg2 Qh4 25.Be1 Qg5 26.Qe2 Ne5 27.Bg2+/– h5 28.h4?? Qg4–/+ 29.Qg4 Ng4 30.Bd2 Nf5 31.Bh3 Bh2–+ 32.Kg2 Nh4 33.Kh1 Be5 34.Nc3 Ra3 35.Bg4 hg4 36.Rac1 Nf3 37.Nb1 Nd2 38.Na3 Nf1 39.Rf1 f5 40.Re1 Kg7 41.Kg2? g5 42.Kf2 Rh8 43.Rg1? Rh2 44.Kf1? Ra2 white resigned... (44...Ra2 45.Nb5 Rc2–+) 0–1. cmulligan (2190) – mi (2130), net–chess.com, 2012.

5.Nf3 e4 6.Nd4+/– (worse is 6.ed4 ef3 7.dc5 (7.Qf3 Bb6 8.Bc4 Nf6 9.Qe3 Qe7 10.a4 a5 11.0-0 Qe3 12.fe3 Be6) 7...Qe7 8.Be2 fe2 (8...Qe2?? 9.Qe2 fe2 10.Bg7+–) 9.Qe2 f6–/+ (9...Qe2 10.Ke2 Ne7 11.Bg7 Rg8 12.Be5 Rg2) 10.Nc3 Qe2 11.Ne2 Ne7 12.0-0 Kf7) 6...Bd4 (6...Nf6!?+/– 7.d3 0-0 8.Nd2 Bg4 9.Be2 Be2 10.Qe2 ed3 11.Qd3 Nbd7 12.Nf5 a6) 7.Bd4+– (7.ed4?! Nf6+/– 8.d3 Bf5 9.de4 Ne4 10.Bd3 0-0 11.0-0 Nd6 12.Bf5 Nf5) 7...b6?? (better is 7...Nf6+– 8.Nc3 0-0 9.Bf6 Qf6 10.Ne4 Qg6 11.Qf3 Re8 12.Bd3 Nd7) 8.Bg7 f6 (8...Qg5 9.Bh8 Bg4 10.Qc1+–) 9.Qh5 Ke7 10.Bh8 Qf8 (10...h6 11.Nc3 Be6 12.Ne4+–) 11.Qd5 (better is 11.Qh7 Kd8 12.Qe4 c6 13.bc6 Kc7+–) 11...Nh6 (11...c6 12.bc6 Be6 13.Qe4+–) 12.Qa8 Qh8 13.Qb8 Ng4 14.Qc7 Bd7 15.Nc3 f5 16.Qa7 Qf6 17.Nd5 (17.Nd5 Ke8 18.Nf6 Nf6 19.Qb6+–) 1–0. pierre – duttons, internet, 2010.

5.Nf3= f6 6.Nd4+/– ed4 (6...Qd4 7.ed4) 7.Qh5+– A double attack 7...g6 8.Qc5 de3 9.Qe3 Qe7 10.Bc4 Qe3 (10...a6 11.Nc3 ab5 12.Nb5+–) 11.fe3 Nd7 12.0-0 (12.Rf1 a6+–) 12...Ne5 (12...a6 13.Nc3+–) 13.Bb3 (13.Bg8 Rg8 14.Rf6 Nd7+–) 13...Bd7 14.Nc3 0-0-0 15.d4 Ng4 16.e4 Ne3 (16...Re8 17.h3 N4h6 18.e5+–) 17.Rf3 Ng4 18.Raf1 (18.Bg8 Rhg8 19.h3 Nh6 20.Rf6 Rgf8+–) 18...f5 (18...N4h6 19.e5 Bg4 20.R3f2+–) 19.e5 Kb8 (19...Re8 20.h3 N4h6 21.Re1+–) 20.h3 N4h6 21.e6 Be8 (21...Bc8 22.b6! ab6 23.Nb5+–) 22.Bc1 Ne7 (22...Rd4 23.Be3 c5+–) 23.Bh6 c6 (23...a6 24.a4 Rd6+–) 24.Bg5 cb5 (24...Rd4 25.Be7 Rg8 26.Bc5+–) 25.Be7 Rd4 (25...Rc8 26.Bf6 Bc6 27.d5+–) 26.Bf6 (26.Bf6 Rd2 27.Bh8+–) 1–0. Cirulis,Ilmars – Hess,Volker, FICGS, 2006.

5.Nf3 Nf6 6.Ne5 0-0 7.Bc4 Nbd7 8.ed4 Bd6? (8...Ne5!? 9.de5 Bd4 10.Bd4 Qd4=) 9.f4 Be5 (9...Nb6!? 10.Bb3 a6 11.ba6 Ra6+/–) 10.de5 Qe8? (better is 10...Nb6 11.Be2 Ne4+–) 11.0-0 Ne4 12.d3 (12.Qe2 Ndc5+–) 12...Nec5 13.Nd2 (13.Ba3 a6 14.d4 ab5 15.Bb5 c6+–) 13...b6? (13...a6 14.ba6 Na6 15.f5+–) 14.Nf3 (14.d4 Nb7+–) 14...Bb7 (14...a6 15.a4 Bb7 16.d4 ab5 17.ab5 (17.dc5?! bc4 18.cb6 cb6+/–) 17...Ra1 18.Qa1+– (worse is 18.Ba1 Ne4+–)) 15.Ng5 (better is 15.d4!? Ne4+–) 15...h6 16.Nh3 Rd8 17.Qg4 Ne6 (17...Na4 18.Bd4 Qe7+–) 18.f5 Ne5 (18...Bd5 19.Bd5 Ne5 20.Be5 Rd5 21.Bg7 Ng7 22.f6 Qe3 23.Rf2+–) 19.Be5 (19.Be5 Ng5 20.Rfe1+–; 19.fe6?! Ng4 20.ef7 Rf7 21.Rf7 Qf7 22.Bf7 Kf7 23.Rf1 Nf6 24.Bf6 gf6+/–) 1–0. averoes (2445) – naskme (2085), net–chess.com, 2011.

5.Nf3 Nf6 6.Ne5 0-0 7.Be2 de3 8.fe3 Re8 9.Nf3 (9.0-0 a6+/–) 9...Bf5 (9...a6 10.0-0+=) 10.0-0+/– Nbd7 11.Nd4 Bg6 12.Nb3 Bd6 13.c4 (13.Na5 Rb8+/–) 13...c6 14.a4 (14.c5!? Nc5 15.Bf6 gf6 16.Nc5 Bc5 17.Nc3+=) 14...Qc7= 15.h3 (15.g3 Bg3 16.hg3 Qg3 17.Kh1 Qh3 18.Kg1 Qg3 19.Kh1 Re4 20.Rf4 Rf4 21.ef4 Be4 22.Bf3 Ng4 23.Qe2 Bf3 24.Qf3 Qh2) 15...Rad8 (15...cb5 16.ab5 Bh2 17.Kh1=+) 16.Bd4 (better is 16.Nc3+=) 16...c5 17.Bc3 Ne4 18.Re1?? (better is 18.Rf3 Bh2 19.Kf1–/+) 18...Bh2 (18...Nc3?! 19.Nc3 Nf6 20.a5=) 19.Kh1 (19.Kf1 Qg3 20.Nc5 Qf2) 19…Nf2 0–1. klafka – dyeda, Live Game Caissa's Web, 2004.

5.Nf3 Bg4 6.Be2 Qd5 7.c4+= Qd7?? (better is 7...Qe6 8.ed4 Bf3 9.dc5 Bg2+/–) 8.Ne5+– Be2 9.Qe2 (better is 9.Nd7!? Bd1 10.Nc5 Bc2 11.Bd4 f6+–) 9...Qe6 10.ed4 Be7 11.0-0 Nf6 12.Qf3 c6 13.bc6 (13.Re1 0-0+–) 13...Nc6 14.Nc6 (14.Qb3 Qc8+–) 14...bc6 15.d3 (15.d5 cd5 16.Nc3 0-0+–) 15...0-0 (15...Rb8 16.Bc3+–) 16.Nc3 Bd6 17.Rfe1 Qd7 (17...Qc8 18.Re2+–) 18.Ne4 Be7 (18...Ne4 19.de4 (worse is 19.Qe4 Rab8 20.Bc3 Rfe8+–) 19...Rfb8 20.Bc3+–) 19.Rab1 (better is 19.d5 cd5 A) worse is 20.Bf6 de4 21.de4 Bf6–/+ (21...gf6?! 22.Rad1 Qe6 23.Rd5+=); B) 20.Nf6 Bf6 21.Bf6 gf6 22.Qf6+– (22.Qd5?! Qd5 23.cd5 Rfd8+–)) 19...Bb4?? (19...Ng4+–) 20.Nf6 gf6 21.d5 Be1 (21...Qd6 22.Bf6 Qf6 23.Qf6 Be1 24.Qg5 Kh8 25.Re1 Rae8+–) 22.Qg3 Kh8 (22...Qg4 23.Qg4 Kh8 24.Bf6) 23.Bf6 1–0. jaddwarrior (2050) – robot39 (1895), ChessWorld.net, 2016.

5.Nf3 Bg4 6.h3 de3 (6...Bf3 7.Qf3 (worse is 7.gf3 Nf6+=) 7...c6 8.Qe4+=) 7.fe3+= Bh5 (7...Be6 8.Be5 (worse is 8.Ne5 Qh4 9.Ke2 f6=) 8...Nf6 9.d4 Bb4 10.c3+/–) 8.Be5+/– f6 9.Bb2 (9.Bh2 a6+/–) 9...Qd7 (9...Bd6 10.Kf2+/–) 10.Nc3 Ne7 11.Ne4 Bd6 (11...Qd5 12.Nc5 Qc5 13.Bd3+/–) 12.Qe2 (12.Bf6!? Nf5 13.Bc3 Ng3 14.Nd6 Qd6+–) 12...0-0 13.0-0-0 (13.Qf2 a6+/–) 13...Bg6 14.Nd6 Qd6 (14...cd6 15.Nd4+=) 15.d4 (15.e4 Qd8+/–) 15...Nd5 (15...a6!?+=) 16.e4+/– Qf4 17.Kb1 (better is 17.Nd2 Re8 18.g3+=) 17...Ne3?? (17...Be4 18.Re1 Re8 19.Ne5=) 18.Rd2 (better is 18.Bc1 Qe4 19.Be3+–) 18...Be4 19.Ba3 (19.Bc1 Rf7=) 19...Re8 20.Ne1 (20.Bc1 Kf8+=) 20...Nc2 0–1. islanderfan (1995) – lfcanales, net–chess.com, 2012.

5.Qh5 Qe7 6.Nf3 Nd7 7.Be2=.

5.Qh5 Qf6 6.ed4 (6.f4 Qf5 7.Qf5 Bf5=) 6...ed4?? (better is 6...Bd4 7.Bd4 ed4=) 7.Qc5+– (7.Qc5 Qe7 8.Qe7 Ne7 9.Bd4+–) 1–0. tit1 – SarahThompson6, Caissa's Web, 2004.

4.e3 c6

5.a4 a6 6.Nf3 Bd6 7.c4 c5 8.d3 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Nbd2 Nf6 12.Be2 0-0 13.0-0 h6 14.ed4 ed4 15.Qb3 Nbd7 16.Bb2 Qc7 17.Re1 Nb6 18.Bf1 Ng4 19.h3 Bh2 20.Nh2 White claimed a win on time 1–0. retiponziani (1830) – Deumie (1630), ChessWorld.net, 2011.

5.a4 Bc5 6.ed4 Bd4 7.Bd4 Qd4 8.Nc3 cb5 9.ab5 Nf6 10.Nf3 Qd6 11.Bd3 Be6 12.0-0 0-0 13.Re1 Nbd7 14.Ne4 Ne4 15.Be4 Bd5 16.Ng5 Be4 17.Ne4 Qd5 18.Rb1 f5 19.Nc3 Qf7 20.Qf3 Nc5 21.Re5 Ne4 22.Ne4 fe4 23.Qf7 Rf7 24.Re4 Rd7 25.Rd1 a6 26.ba6 Ra6 27.Rb4 b6 28.d3 Re7 29.Rdb1 Ra2 30.Rb6 Rc2 31.Rb8 Kf7 32.R8b7 Rb7 0–1. aravind555 – charcot, lichess.org, 2019.

5.ed4 ed4!? 6.Nf3 Qe7 7.Be2 d3 8.cd3 Bg4=.

5.ed4 Qe7 6.Qe2 cb5 7.de5 Bd7 8.Nf3 Nc6 9.Nc3 (9.Qb5?! Nb4 10.Qb7 Nc2 11.Kd1 Rd8+=) 9...a6 10.Nd5 Qc5?? (better is 10...Qd8+/–) 11.Nc7+– Kd8 12.Na8 Qc2 13.Qd3 (better is 13.Bc3 Bc5 14.e6 Be6 15.Bg7+–) 13...Qb2+/– 14.Rb1 Qa2 15.Nb6 Bc5?? (better is 15...Qe6 16.Nd7 Qd7+/–) 16.Qd7 1–0. daSplash – kilmer49, Live Game Caissa's Web, 2004.

5.Nf3 cb5? 6.Ne5+– Nc6 7.Bb5 (better is 7.ed4 Qd5 8.Nc3 Qd4 9.Nf3+/–) 7...a6 (better is 7...Qd5 8.Qf3 Qf3 9.gf3 de3 10.de3 Nge7+–) 8.Bc6 bc6 9.0-0 (better is 9.Bd4 Nf6 10.Qf3+–) 9...Qd6 (9...Bd6 10.ed4 Ne7 11.Nc3+–) 10.Bd4 (10.ed4 Rb8 11.Ba3 Qd4+–) 10...c5 (10...Nf6 11.d3+–) 11.Bc3 Nh6 (11...Nf6 12.Na3+–) 12.Na3 f6 13.Qh5 Ke7 (13...g6 14.Qf3 Rb8+–) 14.Qf3 Rb8 (14...fe5 15.Qa8 Be6 16.Qa7 Qd7 17.Qa6+–) 15.Nc6 Kf7 (15...Kd7 16.Nb8 Qb8+–) 16.Nc4 Qc7 17.Ba5 Qb7 18.Nd8 (18.Nd8 Kg8 19.Nb7 Bb7 20.Qf4+–) 1–0. pierre – tiugm, internet, 2010.

5.Nf3 de3 6.de3 Qd1 7.Kd1 e4+=.

4.e3 Bd7

5.a4 c6 6.ed4 cb5 7.ab5 ed4 8.Bd4 Be7 9.c4 b6 10.f4 Bf6 11.Be3 Ba1 12.Nf3 Nf6 13.Nc3 Bc3 14.dc3 Ne4 15.Bd4 0-0 16.Bd3 Nc3 17.Bc3 Re8 18.Kf2 a6 19.Re1 Rf8 20.Be4 Ra7 21.Bd5 ab5 22.cb5 Bb5 23.Qd4 Ra2 24.Kg3 Qf6 25.Qf6 gf6 26.Bf6 Nd7 27.Bd4 Ra3 28.Kg4 Rd3 29.Re7 h6 30.Rd7 Bd7 31.Kg3 b5 32.Be4 Ra3 33.h3 b4 34.f5 b3 35.Kf4 Rb8 36.Ne5 Be8 37.Ng4 b2 38.Nh6 Kh7 39.Kg5 Rg3 40.Kh5 f6 41.Kh4 b1Q 42.Bb1 Rb1 43.Bf6 Rg2 44.Ng4 Rb4 45.Be5 Bd7 46.Bg3 Bf5 47.Kh5 Bg4 48.Kg5 Rg3 49.Kf6 Bh3 50.Ke5 Rg5 51.Kf6 Kh6 52.Kf7 Rb6 53.Ke7 Rg7 54.Kf8 Rb8 0–1. axtur777 – IRIQUOIS, lichess.org, 2019.

5.ed4 ed4 6.Bd4 Nf6 7.Be3 (7.Qf3 Be6 8.Ne2 Qd5+/–) 7...Bg4 8.f3 Bd7 9.g3 Bd6 10.Bg2 0-0 11.Ne2 Re8 (11...Bb5 12.Nbc3 Bc4 13.Rb1=) 12.0-0 (12.Nbc3 c6+=) 12...a6 13.ba6 Ra6 14.d4?? (14.Nbc3!?=) 14...Nd5 (better is 14...Re3 15.Re1 b5–+) 15.Bf2 Re6 16.Nd2 Qe8 17.Ne4 Bb5 18.Re1 (< 18.Nd6 Rad6 (18...Red6?! 19.Re1 Re6 20.Nf4 Nf4 21.gf4+=) 19.Nf4 Nf4 20.gf4 Be2–/+) 18...f5 19.Nd6 cd6 20.Bf1 Nc6 21.Rb1 Nc3?? 22.Rb5 Nb5 23.Nf4 Re1= 24.Qe1 Qe1–/+ 25.Be1 Ncd4 26.c3 Nf3 27.Kf2 Ne1 28.Ke1? Ra5–+ 29.c4 Nc3 30.Ne2 Na2 31.Bg2 Re5 32.Bb7 Nc3 33.Bf3 Ne2 34.Be2 d5 35.cd5 Rd5?? 36.Bc4+– g5 37.Bd5 Kg7 38.Kf2 h5 39.h3 Kf6 40.Kf3?? Ke5 41.Bf7+= h4?? 42.g4+– f4 (43.Bc4 Kd4+–) 0–1. MasterofDisaster – vello01, Live Game Caissa's Web, 2004.

5.ed4 ed4 6.Nf3 Bc5 7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.d3 cb5 12.Nbd2 Bb4 13.0-0 Bg4 14.Nd4 Be2 15.Qe2 Ne7 16.Nb5 Bd2 17.Qd2 Na6 18.Bg7 Rg8 19.Bf6 Qd5 20.Nc3 Qg2 0–1. axtur777 – Serkan47, lichess.org, 2019.

5.Nf3 Bd6 6.ed4 ed4 7.Bd4 Nf6 8.Be2 0-0 9.0-0 c6 10.c4 cb5 11.cb5 Bc7 12.Bb2 Bb6 13.a4 a6 14.Nc3 Qc8 15.a5 Bc5 16.b6 Nc6 17.d4 Bd6 18.Bd3 Bh3 19.Nh4 Bg4 20.Be2 Be2 21.Ne2 Qg4 22.Nf3 Qh5 23.Ng3 Qh6 24.Nf5 Qf4 25.Nd6 Qd6 26.h3 Rad8 27.Re1 Nh5 28.Ba3 Qd7 29.Bf8 Kf8 30.Re4 g6 31.Nh2 f5 32.Rh4 Qd5 33.Rh5 gh5 34.Qh5 Qf7 0–1. Abdullaevich – jaruhgar, lichess.org, 2018.

4.e3 de3

5.de3 Qd1 6.Kd1 Bf5 (6...Bd6 7.f4+=) 7.Bd3 (better is 7.Be5!? Nd7 8.Bd4+=) 7...e4+= 8.Bc4 Nf6 (8...Nd7 9.Ne2+=) 9.Ne2 (9.Bf6 gf6 10.Nd2 a6+=) 9...Be7 10.Ng3 Bg6 11.Nd2 Nbd7 12.h4 h6 13.h5 Bh7 14.Ke2 0-0 15.Rad1 Ne5?? (better is 15...Bd6=) 16.Be5+– 1–0. toffie62 (1790) – ulla (1690), gameknot.com, 2014.

5.de3 Bd6 6.c4 Be6 7.Nf3 Bb4 8.Bc3 Bc3 9.Nc3 Nd7 10.a4 Ngf6 11.Bd3 0-0 12.0-0 Bg4 13.Be2 Nc5 14.Ne5 Be2 15.Qe2 Nce4 16.Ne4 Ne4 17.Rfd1 Qf6 18.Nf3 Nc3 19.Qb2 Nd1 20.Qf6 gf6 21.Rd1 Rfd8 0–1. A_VB – yomammy, lichess.org, 2017.

5.fe3 Bd6 6.Nf3 Nd7 7.Be2 Nh6 8.0-0 0-0 9.c4. GuestXBCD – GuestDGJH, freechess.org, 2016.

5.fe3 e4 6.g3 Nf6 7.Bg2 c6 (7...Nbd7 8.Nh3+=) 8.a4 (8.bc6 Nc6 9.Bf6 Qf6=) 8...Bd7 (8...Nbd7 9.Ne2=) 9.Nc3 (9.Bf6 Qf6 10.Nc3 Qe5+=) 9...cb5 10.Ne4 Ne4 11.Be4 Bc6 12.Bc6 bc6 (12...Nc6 13.Ne2=) 13.Ne2 f6 14.0-0 Bd6 (14...b4 15.Nf4 Qd7 16.Bd4+=) 15.Nf4 (15.ab5!? cb5 16.Nd4+–) 15...Bf4+= 16.Rf4 0-0 17.ab5 cb5 18.Rb4 (18.Qf3 Nd7 19.Qd5 Rf7 20.Bc3+/– (20.Qb5 Rb8 21.Qd3 Rb2–/+)) 18...Qd5= 19.Rd4 Qb7 20.Qg4 f5 21.Qg5 Nc6 22.Rd5 Na5?? (better is 22...b4+/–) 23.Rb5+– (23.Rb5 Qd7 24.Rba5+–) 1–0. Kochukova,Galina – Nekrasova,Tatyana, Angarsk (Women) op, 2007.

5.fe3 e4 6.Qh5 Nf6 7.Qh4 Be7 (7...Nbd7!?=+) 8.Bf6+= Bf6 9.Qe4 Be7 (9...Be6 10.d4+= (10.Qb7?? Bd5 11.Qa8 Ba8–+)) 10.Nc3+– 0-0 11.Bd3 Threatening mate: Qxh7 11...Be6?? (better 11...g6+–) 12.Qh7 1–0. GuestGPPJ – GuestZCXC, freechess.org, 2020.

5.fe3 Be6 6.Be5 Ba2 7.Ra2 Qd5 8.Bg7 Bg7 9.c4 Qd6 10.Nf3 Nd7 11.Be2 Nc5 12.0-0 Nf6 13.d4 Nce4 14.Qc2 0-0 15.c5 Qe6 16.Bc4 Qf5 17.Ne5 Qg5 18.Bd3 Qe3 19.Kh1 Rae8 20.Be4 Ne4 21.Nd7 Bd4 22.Nf8 Ng3 23.hg3 Qh6 0–1. RichardSommer (2065) – jiovan (1960), lichess.org, 2020.

5.fe3 f6 6.Nf3 Bd6 7.Ne5 Ne7 8.Nc4 0-0 9.Nd6 cd6 10.c4 Bd7 11.Be2 d5 12.a4 dc4 13.Bc4 Kh8 14.0-0 Bf5 15.Qf3 Bd3 16.Bd3 Qd3 17.Qb7 Nd7 18.Ba3 Nf5 19.Bf8 Ne3 20.Bg7 Kg8 21.de3 Kg7 22.Qf3 Rf8 23.Ra3 Qd6 24.Rd1 Qe5 25.Qg4 Kh8 26.Rd7 Qe3 27.Kf1 Qc1 28.Kf2 Qb2 29.Kg3 Qb1 30.Qg7 1–0. RichardSommer (1975) – Christ_Follower (1985), lichess.org, 2020.

5.fe3 Qh4 6.g3 Qb4 7.Be5 Nf6 8.Bc3 Qg4 9.Qg4 Bg4 10.Be2 Nbd7 11.Bg4 Ng4 12.Nf3 0-0-0 13.0-0 f6 14.a4 Bc5 15.Nd4 Nde5 16.Ne6 Rd7 17.Nc5 Re7 18.Be5 b6 19.Bc7 bc5 20.Bd6 Rd7 21.Bc5 h5 22.Bd4 h4 23.Kg2 hg3 24.Kg3 Rh2 25.Kg4 g5 26.Rf6 Rdh7 27.Nc3 Rg2 28.Kf5 Rf2 29.Kg6 Rhh2 30.Rf2 Rf2 31.Ne4 Rd2 32.Nd2 Kd7 33.Kg5 Ke6 34.Ba7 Kd5 35.b6 Kc6 36.a5 Kb7 37.a6 Ka8 38.b7 Ka7 39.Rb1 Kb8 40.a7 Kc7 41.b8Q Kc6 42.Rb6 Kc5 43.Qd8 ½–½. RichardSommer (2005) – master_casper (2040), lichess.org, 2020.

4.e3 Nf6

5.a4 Bc5 6.Nf3 Nbd7 (6...de3 7.de3 Qd1 8.Kd1=) 7.Bc4 (7.ed4 ed4 8.Qe2 Be7+=) 7...de3= 8.fe3 (8.de3 e4 9.Ng5 0-0=+) 8...0-0 (8...e4 9.Ng5 0-0 10.0-0=) 9.0-0 (9.Be5 Ne5 10.Ne5=) 9...Nb6 (9...e4 10.Ne5 Ne5 11.Be5=) 10.Bb3 (10.Ne5 Nc4 11.Nc4 Qd5+/-) 10...Bg4 (10...e4 11.Ng5 Qe7 12.Rf6 gf6 13.Nh7+-) 11.Qe1 (11.Be5 a6+/-) 11...Ne4? (11...Bf3 12.Rf3 Nbd7 13.d3+=) 12.d3 (12.Ne5 Be6 13.Be6 fe6 14.Rf8 Qf8+/-) 12...Nf6 (12...Bf3 13.Rf3 Ng5+/-) 13.Ne5+/- Bh5 (13...Be6 14.Be6 fe6 15.a5+/-) 14.d4 Bd6 15.Nf3 (15.a5 Nbd7+/-) 15...Bg6 (15...Re8!?+/-) 16.c4+- Ne4? (16...Bd3 17.c5+/-) 17.Nc3 (better 17.c5 a6 18.cd6 Nd6 19.ba6 Ra6 20.Ne5+-) 17...Bb4 18.Rc1 (18.Ne5 a6+-) 18...Nc3 (18...Re8 19.c5 Nd5 20.Ne5 Re5 21.de5 Ndc3 A) worse 22.Rc3 A1) worse 22...Nc3 23.Bc3 Qd3 24.Bf7 (24.Bb4?! Qb3 25.e6 Qe6=) 24...Bf7 25.Bb4+/-; A2) 22...Bc3 23.Bc3 Qd3-+ (23...Nc5?! 24.Bc4=); B) 22.Bc3 Nc3 23.Rc3+/-) 19.Bc3+- (19.Rc3 Bd3 20.c5 Bf1 21.cb6 Bc3 22.Qc3 Be2 23.bc7 Qd7+/-) 19...Bc3 20.Qc3 Re8 (20...Nd7 21.Bc2+-) 21.Rfe1 (21.Ne5 Bh5+-) 21...Qf6 (21...a6 22.Ne5 Be4 23.Rf1+-) 22.Re2 (22.c5!? Nc8+-) 22...Nd7 23.Rce1 White intends c5 (23.c5 a6+-) 23...Re7 (23...c5 24.bc6! Qc6 25.c5+/-) 24.c5 Rb8 (24...Be4 25.Nd2 Qg6 26.Ne4 Qe4 27.Rf2+-) 25.Rf2 Rbe8 26.Ne5 (26.Bd5 c6 27.bc6 bc6+-) 26...Qh4 (26...Qg5 27.Nd7 Rd7 28.c6 bc6 29.Qc6+- (worse 29.bc6 Rde7+=)) 27.Ng6 hg6 28.Rfe2 (28.g3 Qh6+-) 28...Nf6 29.Bc2 (29.c6 b6+-) 29...Ne4 30.Be4 Re4 (30...Qe4 31.Rf2+-) 31.Qd3 (31.c6 b6+-) 31...Qg5+/- 32.d5 (32.a5!?+/-) 32...Ra4+= 33.d6 (33.e4 Qe5+=) 33...cd6 (33...Qc5 34.d7 Rd8 35.Rd1=) 34.cd6 Qd8 (better 34...Rb4!?=) 35.Rd1 Rae4?? (better 35...Qd7 36.Rc2 Qe6+/-) 36.d7+- R8e7 (36...R4e5+-) 37.Qd5 (better 37.Rc2 Kh7 38.Rc8 Rd7 39.Qd7 Qg5 40.Qh3 Rh4+-) 37...R4e5 (37...R7e5 38.Qb7 Rc4+-) 38.Qd4?? (better 38.Qb7 Kh7 39.Qc8 Rd7 40.Qd7+-) 38...R5e6?? (38...Re4 39.Qd2 Rc4+-) 39.Rc1 (better 39.Rc2 Rd7 40.Qd7 Qd7 41.Rd7+-) 39...f6?? (better 39...Qd7 40.Qa7 Qb5-/+) 40.Rc8+- Kf7 41.Rd8 Re3 42.Re3 Re3 (42...g5 43.Re7 Ke7 44.Re8 Kf7 45.Qe4 a5 46.d8N) 43.Qe3 g5 (43...f5 44.Rf8! Kf8 45.Qe8) 44.Qb3 (44.Qe8) 44...Kg6 45.Re8 (45.Qd3 Kf7 46.Qe4 g6 47.Qd5 Kg7 48.Qg8 Kh6 49.Qh8) 45...Kh6 (45...g4 46.Qd3 Kg5 47.Re5 Kh6 48.d8Q f5 49.Qh4 Kg6 50.Qf5) 46.d8Q (46.Qh3 Kg6 47.g4 Kf7 48.Qh5 g6 49.Qh7) 46...g6 (46...g4 47.Qe3 Kg6 48.Qe4 Kg5 49.Qd2 Kh5 50.Qh7) 47.Rh8 (47.Rh8 Kg7 48.Qbg8; 47.Qh3 Kg7 48.Qe7) 1-0. ClayPigeons (2140) - First_is_love (2145), Rated Bullet game, lichess.org, 2020.

5.a4 de3 6.fe3 Bd6 7.Nf3 0-0 8.Ne5 Be5 9.Be5 Qd5 10.Bb2 Ne4 11.Qf3 f5 12.c4 Qd8 13.Be2 Qh4 14.g3 Qh3 15.Nc3 Be6 16.Ne4 fe4 17.Qe4 Nd7 18.0-0-0 Nb8 19.Bf1 Qh6 20.Qb7 Nd7 21.Bg2 Rae8 22.Bd5 Bd5 23.Qd5 Kh8 24.Qd7 a6 25.Rhf1 ab5 26.ab5 Qe6 27.Rf8 Rf8 28.Qe6 h6 29.Qe7 Rg8 30.Rf1 Kh7 31.Rf8 Kg6 32.Rg8 Time forfeit 1–0. RichardSommer (1980) – pion_jablay (1985), lichess.org, 2020.

5.c4 dc3 6.Bc3 a6 (6...Bd6 7.d4 e4 8.Nd2+=) 7.a4 (7.Be5 ab5 8.Bb5 c6+=) 7...ab5 (7...Bd6 8.d4 e4 9.Nd2+=) 8.Bb5 c6 9.Bc4 Be7 (9...Bd6!?+=) 10.Qb3 Be6? (better is 10...0-0 11.Be5 Nbd7=) 11.Be6+– fe6 12.Qe6 (12.Qb7 Nbd7 13.Qc6 Rc8+–) 12...Nd5 (better is 12...Nbd7!? 13.d4 ed4 14.Bd4 Ra6 15.Bf6 Nf6+=) 13.Qe5 Nc3 14.Qg7?? (14.Qc3 Na6 15.Nf3+/– (15.Qg7?! Bf6 16.Qb7 Ba1=)) 14...Bf6+= 15.Qb7 Nd7?? (better is 15...Ra4 16.Ra4 Na4=) 16.Nc3+– (16.dc3?! Ne5 17.Qb3 Nd3 18.Kf1 Nc5+–) 16...0-0 17.Qc6 Ne5 18.Qd5 (better is 18.Qe6 Kh8 19.Nh3+–) 18...Nf7 (18...Qd5 19.Nd5 Nd3 20.Ke2 Ba1 21.Kd3 Ra4+–) 19.Qd8 Rfd8 20.Nf3 (20.d4 Kf8+–) 20...Rd7 (20...Bc3 21.dc3 Ra5 22.Ke2+–) 21.Ra3 (21.d4 Kf8+–) 21...h6 (21...Bc3 22.dc3 Rda7 23.Ke2 Ra4 24.Ra4 Ra4 25.Nd2+–) 22.0-0 (22.d4 Ng5+–) 22...Ne5 (22...Rd3 23.Rc1+–) 23.Ne5 Be5 24.f4 (24.d4 Bc7+–) 24...Bf6 (24...Bc3 25.dc3 Rd2 26.g4+–) 25.Rb1 (better is 25.d4 Kf7+–) 25...Rd2 26.Ne4 Re2 27.Nf6 Kg7 28.Nd5 Rd8 29.Ne7 Kf7 30.Nf5 Kg6 31.Nd4 Rd2 32.a5 h5 33.a6 Ra8 34.Rb6 Kf7 35.Rb7 White plans a7 35...Kg6 36.a7 Rc8 37.Ra6 Rc6 38.Rc6 1–0. lindsey000 – raven_king, gameknot.com, 2013.

5.c4 de3 6.fe3 e4 7.Nc3+=.

5.d3 b6 6.ed4 ed4 7.Nf3 Bd6 (7...Bb4!? 8.Nbd2 c5+=) 8.Bd4 (8.Nd4 a6+=) 8...0-0= 9.Bf6 (9.Be2!?=) 9...Qf6+= 10.Be2?? (10.Nbd2 a6+=) 10...Bd7 (10...Qa1 11.a3–+) 11.0-0?? (11.d4=) 11...Bc5 (better is 11...Qa1 12.d4 Qa2–+) 12.Nbd2 (12.d4 a6+=) 12...Bb5 13.c4 (13.Ne4!? Qf5 14.Nc5 Qc5 15.Re1+=) 13...Bc6+= 14.Nb3 Nd7 15.Nc5 bc5 16.Qd2 Rfe8 17.Rab1 Ne5 (better is 17...Re7=) 18.Kh1?? (better is 18.Ne5 Re5 19.Rfe1=) 18...Nf3–+ (worse is 18...Bf3 19.Bf3 Nf3 20.Qa5–+) 19.Bf3 Bf3 20.gf3 (20.Rfe1 Bc6 21.f3–+) 20...Rad8 (better is 20...Qf3 21.Kg1 Re6–+) 21.Rbe1 (21.f4 Qc6 22.f3 Rd4–/+) 21...Re1 (21...Qf3 22.Kg1–/+) 22.Re1–/+ h6 (22...Qf3 23.Kg1–/+) 23.Qe2 g5 (23...Qd6–/+) 24.Qe7? (24.Qe4 Rd4 25.Qa8 Kg7+=) 24...Qd6 (better is 24...Qf3!? 25.Kg1 Rd4–/+) 25.Qd6 (25.f4 g4=) 25...cd6 (25...Rd6 26.Re5+=) 26.Re2 (26.Re7 d5=) 26...f5 (26...d5 27.Re5+=) 27.Kg2 Kg7 (27...Kf7 28.f4+=) 28.Re7= Kg6 29.Ra7 Rb8 30.Ra6+/– Rb2 31.Rd6+– Kh5 32.a4 Rb3 33.a5 f4 34.a6 Ra3 35.Rd5 Ra6+/– 36.Rc5 Rd6 37.Rd5 Rg6 38.c5 Rc6 39.d4 Re6 40.Rd6 Re2 0–1. yannigator (1920) – alctay (1720), net–chess.com, 2010.

5.d3 c5!?+=.

5.ed4 Bg4? 6.Be2 Bf5 (6...Be2!? 7.Qe2 e4+/–) 7.de5+– Ne4 8.d3 Nf2? (better is 8...Nc5+–) 9.Kf2 Qh4 10.g3 Qb4 11.Bc3 Qb5 12.d4 Qc6 13.Nf3 Nd7 14.Nh4 (14.Rf1 Rd8+–) 14...Be4 (14...Bc2 15.Qc2 Qh1 16.Nf3 Ne5 17.Qe4+– (17.Ne5?! Qh2 18.Kf3 Qh1 19.Ke3 f6+–; 17.de5?! Bc5 18.Bd4 Bd4 19.Nd4 Qh2 20.Kf3 0-0-0+/–)) 15.Bf3 Bf3 16.Nf3 0-0-0 17.Qd2 (17.Rf1 f6 18.ef6 Nf6+–) 17...f6 (better is 17...Ne5 18.Ne5 Qh1+–) 18.Na3?? (better is 18.ef6 Nf6 19.Qd3+–) 18...fe5 (better is 18...Ba3 19.Rhe1 Rhe8–/+) 19.Ne5?? (better is 19.Bb2 Nf6 20.Ne5 Qh1 21.Rh1 Ne4 22.Ke3 Nd2 23.Rd1 Ba3 24.Ba3 Rd4 25.Kd4 (worse is 25.Rd2 Ra4 26.Bb2 Ra2+=) 25...Rd8 26.Ke3 Nc4 27.Nc4 Rd1 28.Bb2+=) 19...Ne5–+ 20.de5 (20.Rhe1 Ng4 21.Kg1 Ba3 22.h3–+) 20...Rd2 21.Bd2 Ba3 22.Be3 Rf8 23.Ke2 Qc4 24.Kd2 Bb4 25.Kc1 Qe4 26.Bd2 Qh1 27.Kb2–+ Qh2 28.Bb4 Rf2 29.Rc1 Qg3 30.Bc5 Qe5 31.Kb3 Qc5 32.c4 a5 33.a4 Qb4 0–1. OutOfBounce – vello01, Live Game Caissa's Web, 2005.

5.Nf3 Bc5 6.Ne5 de3 7.fe3 0-0 8.Be2 c6 9.a4 cb5 10.ab5 Qe8 11.0-0 Nbd7 12.Nd7 Bd7 13.c4 a6 14.Nc3 ab5 15.cb5 Bb4 16.Ra8 Qa8 17.Bf3 Bc3 18.Bc3 Bb5 19.Rf2 Qa6 20.Qb1 Bc6 21.Bf6 Bf3 22.Rf3 gf6 23.Qf5 Qe6 24.Qf6 Qf6 25.Rf6 Rd8 26.d4 Re8 27.Kf2 b5 28.Rb6 Rc8 29.Rb5 Rc2 30.Kf3 Rc3 31.Rc5 Rc2 32.Rc2 1–0. RichardSommer (1965) – vanhela1 (2075), lichess.org, 2020.

5.Nf3 Bd7 6.Ne5 Bb5 7.Bb5 c6 8.Be2 Nbd7 9.Nd7 Qd7 10.Bd4 Bd6 11.Bf6 gf6 12.d4 Rg8 13.c3 Rg2 14.Bf3 Rg8 15.Nd2 0-0-0 16.Ne4 Qf5 17.h3 Rge8 18.Bg4 Qg4 19.Qg4 f5 20.Qf5 Kb8 21.Nd6 Rd6 22.Qf7 Rde6 23.Ke2 c5 24.Rab1 R6e7 25.Qf4 Ka8 26.Rb3 Re6 27.Rhb1 cd4 28.cd4 h5 29.Rb7 Rb6 30.R1b6 ab6 31.Rb6 Ka7 32.Qc7 Ka8 33.Qb7 1–0. RichardSommer (1960) – modernbenoni (1945), lichess.org, 2020.

5.Nf3 e4 6.Nd4+= c6 7.a4 c5 8.Nb3. pumpkin (2325) – jgrace, net–chess.com, 2009.

5.Nf3 Bg4 6.Be2 de3 7.fe3 e4 8.Nd4 Be2 9.Qe2 Bc5 10.0-0 (10.Nf5 0-0 11.0-0 Nbd7+/-) 10...0-0 (10...Bd4 11.Bd4 Nbd7 12.Nc3+/-) 11.a4 (11.Nf5!? Nbd7 12.Nc3+/-) 11...a6 12.Nb3 Be7 13.Nc3 Nbd7 14.Rab1 (14.d3 ed3 15.cd3 Re8=) 14...Nb6 (14...Re8 15.Nd4=) 15.ba6+= Ra6 16.a5 Nbd5 17.Qc4 (17.Na4 Qe8 18.Nac5 Bc5 19.Nc5 Ra5+=) 17...Nc3= 18.Qc3 (18.Bc3 Qd5 19.Qe2 g6=) 18...Rc6=+ 19.Qe5 Re6 (better 19...Rc2 20.Bc3 Bd6=+) 20.Qb5+/- Qc8 21.Nd4 Ra6 22.Ne2 (better 22.Nf5 Qe6 23.Bd4+/-) 22...c6= 23.Qb3 Ra5 24.Bf6 (better 24.Ng3=) 24...Rb5?? (better 24...Bf6 25.Ng3 Rb5=) 25.Qb5+- cb5 26.Be7 Re8 27.Bb4 Qc2 28.Nd4 Qc4 29.Bc3 Qc8 (29...g6 30.Rb5 Qc7 31.Rfb1+-) 30.Rb5 g6 (30...f6 31.Rfb1 Re7 32.Nf5+-) 31.Rfb1 Re7 32.Nc2 (better 32.Ne2 Rd7 33.Bf6+-) 32...h5? (better 32...Rd7+-) 33.Nb4 Kh7 (33...Re6+-) 34.Nd5 Re6 (34...Re8 35.Nf6 Kh6 36.Ne8 Qe8 37.h4+-) 35.Rb7 Qd8 (35...Kh6 36.Rf7 Qg8+-) 36.Rf7 Kh6 37.Bg7 Kg5 38.Bf6 (38.Rb5 Qd7 39.Rd7 Kh4 40.Nc7 Kg4 41.Ne6 Kh4 42.Rd4 g5 43.Re4 g4 44.Bf6) 38...Rf6+- 39.Nf6 (39.Rf6?! Qd5 40.Rf2 Qc6+/-) 39...Kh4 (39...Kf5 40.Rb5 Ke6+-) 40.Ne4 g5 (40...Qg5 41.g3 Qg3 42.hg3 Kh3 43.Rb4 g5 44.Ng5 Kg3 45.Rf3) 41.g3 Kg4 42.Nf2 1-0. Bushwacker (1900) - CoachDean (2000), ChessWorld.net, 2017.

5.g3 Bc5 6.Qe2 (6.Bg2 0-0+=) 6...0-0 (6...Qd5 7.Qf3 e4 8.Qf4–/+) 7.e4 (7.Bg2 a6–/+) 7...c6 (7...a6 8.Nf3–/+) 8.a4 Nbd7 (8...a6 9.Ba3 Ba3 10.Ra3–/+) 9.d3 (9.Nf3 a6 10.bc6 bc6–/+) 9...Bb4 (9...Qb6 10.c3–+) 10.Nd2 (better is 10.c3!? Ba5 11.bc6 bc6 12.f4–/+) 10...cb5–+ 11.ab5 Nb6 (11...Qb6 12.Rb1–+) 12.Ba3 (12.f4 ef4 13.gf4 Bg4–+) 12...Bc3 (12...Ba3 13.Ra3 Qc7 14.f4–+) 13.Rb1 Re8 14.Ngf3 (14.Qd1 a6–+) 14...Bg4 (14...Be6 15.Kd1–+) 15.Bg2–/+ Qc7 16.0-0 Qd7 (16...a6 17.ba6 Ra6 18.Bc1–/+) 17.Bb4 (better is 17.Nb3–/+) 17...Bh3 (17...Bb4!? 18.Rb4 Rec8–/+) 18.Bc3 (18.Bh3 Qh3 19.Bc3 dc3=) 18...Bg2 19.Kg2 dc3 20.Nb3 (20.Nc4!? Nc4 21.dc4+=) 20...Qb5–/+ 21.Nbd4 Qd7 (21...Qc5 22.Rb5 Qc7 23.Nf5–/+) 22.Nf5 (22.Nb5 Na4 23.Qe1 Qc6+=) 22...Nc8 (22...Qc6 23.Rb3–/+) 23.Rfd1 (23.Qe1 Qc7=) 23...Nd6 (23...Qc6 24.Qe1–/+) 24.Ne3 (better is 24.Nd6 Qd6 25.Rb7=) 24...b5 25.d4 (better is 25.Qe1 Qc7 26.Rb3–/+) 25...Nc4?? (better is 25...ed4 26.e5 Qc6 27.Rd4 Re5 28.Rd6 Qd6 29.Ne5 Qe5 30.Qb5 Qe6–/+) 26.Nc4 (26.de5!? Qc6 27.ef6 Re4+–) 26...bc4+/– 27.de5 Ng4?? (better is 27...Qc6 28.ef6 Re4+–) 28.Rd7 1–0. MasterofDisaster – kolochary, Live Game Caissa's Web, 2004.

5.g3 de3 6.de3 Qd1 7.Kd1–/+.

5.ed4 ed4

6.a4 Bc5 7.Nf3 Bg4 8.Be2 Qe7 9.0-0 0-0 10.c4 Re8 11.Bd4 Bd4 12.Nd4 Be2 13.Ne2 Qe2 14.Qe2 Re2 15.d4 Nbd7 16.Nc3 Rc2 17.Rac1 Rc1 18.Rc1 Nb6 19.c5 Nbd5 20.Nd5 Nd5 21.Re1 Nc3 22.a5 Rd8 23.g3 Nb5 24.Re7 Rc8 25.d5 Kf8 26.Rd7 Ke8 27.c6 bc6 28.dc6 Nd6 29.a6 Rd8 30.Rd8 Kd8 31.f4 Nc4 32.Kf2 Na5 33.Ke3 Nc6 34.Ke4 Nb4 35.Kd4 Na6 36.Kd5 Kd7 37.Kc4 Kd6 38.g4 c5 39.h4 Nc7 40.g5 Kc6 41.f5 Nd5 0–1. A_VB (1655) – sirus10 (1680), lichess.org, 2017.

6.Bc4 Qe7 7.Qe2 Qe2 (7...c5!?=) 8.Ne2+– Bc5 9.Nd4 0-0 10.0-0 Ne4 (10...Nbd7 11.Nb3 Bd6 12.Re1+–) 11.a4 (11.Nb3 Nd6 12.Bd3 Bb6+–) 11...c6 (11...Nd6 12.Bd5+–) 12.Re1 Nd6 13.Bb3 cb5 (13...Rd8 14.bc6 bc6 15.Re5+–) 14.ab5 (14.Nb5 Nc6+–) 14...Bd4 (14...Nd7 15.Na3+–) 15.Bd4+– Nb5 16.Bc5 Nd7 (16...Rd8 17.Re7 Kh8 18.Rf7+–) 17.Bf8 Kf8 18.Na3 Nd4 19.Ba4 a6 20.c3 b5 (20...Ne6 21.Nc4+–) 21.cd4 (21.Bd1 b4 22.cb4 Rb8+–) 21...ba4 22.Nc4 Nf6 (22...Bb7 23.Ra4 Bc6 24.Ra5+–) 23.Nb6 (23.Ra4?! Nd5+–) 23...Rb8 24.Nc8 Rc8 25.Ra4 Rc2 (25...Ra8 26.Rea1+–) 26.Ra6 (26.Ra6 Rc8 27.Ra7+–) 1–0. DEFFM – GuestVDVH, freechess.org, 2020.

6.Nf3 c5=.

6.Nf3 Bc5 7.c4? (7.Qe2 Kf8=) 7...b6 (better is 7...0-0 8.Be2 d3–/+) 8.Qe2= Be6 9.Ng5 Qd6 10.Ne6 fe6 11.a4 Nbd7 12.g3 0-0 13.Bg2 (13.f4 a6=) 13...Rad8 (13...d3 14.Qd1 Rae8 15.a5+=) 14.d3 Ne5 (14...Bb4!? 15.Nd2 Nc5+=) 15.0-0+= g5 (15...c6+=) 16.f4 (16.Nd2 Bb4+=) 16...gf4+= 17.Rf4 (worse is 17.gf4 Nc4 18.Bc1 Ne3–/+) 17...Nc4 18.Kh1 (18.dc4 d3 Theme: Double Attack) 18...Ne3 19.Na3 Ng2 20.Kg2 Qd5 (20...e5 21.Rf5 Rde8 22.Nc4 Qd5 23.Kg1 Qc4 24.Rf6 Rf6 25.Qg4 (25.dc4?? d3 26.Kg2 de2–+) 25...Rg6 26.Qg6 (26.dc4 Rg4 27.Rd1 d3 28.Kh1 Re4–+) 26...hg6 27.dc4 d3 28.Kg2–+) 21.Kg1 Bd6 22.Rh4 (22.Rf2!?+=) 22...e5–/+ 23.Nc4 Rde8 24.Nd6 (24.Rf1 c5–/+) 24...cd6 (worse is 24...Qd6 25.Ba3 c5 26.bc6 Qc6 27.Bf8 Kf8 28.Rh6+/–) 25.Qg2 (25.Rf1 Qe6–/+) 25...Qb3 26.Qd2 Re7 27.Bc1 Nd5 28.Rg4 Kh8 29.Ba3 Re6 (29...Qa4 30.Qb2 Ne3 31.Bd6 Ng4 32.Ra4+–) 30.Rf1?? (better is 30.Bb2–+) 30...Rf1 (30...Rf1 31.Kf1 Ne3 32.Ke2 Ng4–+) 0–1. Zimmer,Georg – Fehr,Wolfgang, corr SOK–90–66, 1990.

6.Nf3 Bg4 7.Bd4?? (better is 7.Qe2 Be7 8.h3 Bf3 9.Qf3=) 7...Bf3–+ 8.Qf3 Qd4 9.Nc3 c6 10.Be2 Bd6 11.0-0 0-0 12.a4 (12.Rad1 Re8–+) 12...Qd2 13.Rad1 Qf4 Do you see the mate threat? 14.g3 Qf3 15.Bf3 Bc5 16.Nb1 (16.g4 h6–+) 16...a6 17.c4 ab5 18.ab5 cb5 19.cb5 Ra5 20.Bb7 Rb5 21.Bf3 Bb4 22.Rd4 Rb6 23.Rfd1 Bc5 24.Rc4 Nbd7 25.Kg2 Rb2 26.Rf1 (26.Nd2 Rfb8–+) 26...Bf2 27.Rf2 Rb1 28.Re2 Rb5 29.Ra4 Rfb8 30.Raa2 g6 31.Rac2 Ne5 32.h3 (32.Rc7 Kg7–+) 32...Nf3 33.Kf3 Rf5 (better is 33...Rb3!? 34.Kf2–+) 34.Kg2 Rfb5 (34...Rb3 35.Rb2 Rb2 36.Rb2–+) 35.Ra2?? (35.Kf3 Rb3 36.Kf2–+) 35...Nh5 36.Rf2 f5 37.g4 Ng7 38.Ra4 fg4 39.hg4 Rb2 40.Raf4 Rf2 41.Rf2 Ne6 42.Rf6 Re8 43.Kg3 Kg7 44.Rf2 Rf8 45.Re2 Ng5 46.Re3 h6 47.Kg2 Rb8 48.Rc3 (48.Kg3 Kf6–+) 48...Rb4 49.Rc7 Nf7 50.Kg3 g5 51.Kh3 Rf4 52.Ra7 Kg6 53.Ra6 Rf6 54.Ra5 Nd6 55.Re5 h5 56.Kg3 (56.gh5 Kh5 57.Kg2 Kh4–+) 56...hg4 57.Kg4 Rf4 58.Kh3 Kh5 59.Re1 g4 60.Kg2 Nf5 61.Re5 Kh4 Black plans g3 62.Re8 Ng7 63.Re3 Nh5 64.Re2 g3 65.Rc2 Ra4 66.Rb2 Nf4 67.Kg1 (67.Kf3 g2 68.Rg2 Ng2 69.Ke2–+) 67...Ra1 68.Rb1 Rb1 0–1. Lengton – Hotting,Arend, HHC pionier, 1988.

5.Nf3 de3

6.de3 Qd1 7.Kd1 Ne4 8.Ke1 Bb4 9.c3 Bd6 10.Nbd2 Nd2 11.Nd2 Be6 12.Nc4 Bc4 (12...Nd7!?=+) 13.Bc4+= Nd7 14.Bd5 Nc5 15.Ke2 f5 16.c4 0-0-0 17.Rad1 Rdf8 (17...Rhe8 18.Ba1+=) 18.h4 Na4 19.Ba1 h6 (19...Rf6 20.e4 fe4 21.Be4+=) 20.h5 Nb6 (better 20...Kb8!?+–) 21.c5!+– Bc5 22.Be5 Rh7? (better 22...Re8 23.Bg7 Rh7+–) 23.Be6 Kb8 24.Rd3 Re8 (24...Nc8 25.Rd7 Bd6 26.Rg7 Rhh8+–) 25.Bf5 Rhh8 (25...a6 26.Bh7 Re5 27.f4+–) 26.Bg7 Rhg8 27.Bg6 Rd8 (27...Bf8 28.Be8 Bg7 29.Bg6+–) 28.Rd8 Rd8 29.Bh6 Nd5 (29...Rg8 30.Bf7 Rd8 31.Bg7+–) 30.Bg7 Bb4 (30...Bf8 31.h6 Ne7 32.Bf6+–) 31.h6 Nc3 (31...Bc3 32.Be4 Nf6 33.h7 Nh7 34.Bc3+–) 32.Kf3 Rd6 (32...Nb5 33.h7 a6+–) 33.h7 b6 34.h8Q (34.h8Q Kb7 35.Bf5 Nb5 36.Qc8 Kc6 37.Be4 Rd5 38.Qa8 Kd7 39.Bd5 Nd4 40.Bd4 Be7 41.Bc6 Kd6 42.Qe8 Ke6 43.e4 b5 44.Rh6) 1–0. Silent Move (2115) – dontdaremovethatking, redhotpawn.com, 2015.

6.fe3 Bd6 7.Be2 0-0 8.Be5 Be5 9.Ne5 Nbd7 10.Nd7 Bd7 11.0-0 Qe8 12.a4 a6 13.Nc3 ab5 14.ab5 Ra1 15.Qa1 Ne4 16.Ne4 Qe4 17.Bd3 Qb4 18.Qe5 Qd2 19.Qc7 Qe3 20.Kh1 Bc8 21.h3 Qd4 22.Rf3 Qd7 23.Qf4 b6 24.Qh4 g6 25.Qh6 Bb7 26.Rf4 Qd5 27.Be4 Qd1 28.Kh2 Be4 29.Re4 Qc2 30.Rh4 g5 31.Qg5 Qg6 32.Qg6 fg6 33.Rc4 Rf5 34.Rb4 Kf7 35.h4 Ke6 36.Kh3 Kd6 37.Kg4 Kc5 38.Rb1 Kc4 39.g3 Kc3 40.Rc1 Kd2 41.Rc7 h5 42.Kh3 Rb5 43.Rc6 g5 44.hg5 Rg5 45.Rb6 Ke3 46.Rb3 Kf2 47.Rb2 Kf3 48.Rb3 Kf2 49.Kh2 h4 50.gh4 Rg2 51.Kh3 Rg1 52.h5 Rh1 53.Kg4 1–0. Abdullaevich (1725) – achap2009 (1625), lichess.org, 2019.

6.fe3 e4 7.Nd4 c5 8.bc6 Nc6 9.Bb5 Bd7 (9...Qc7 10.0-0+=) 10.0-0= Be7 11.Nc6 bc6 12.Bc4 0-0 13.Nc3 Qa5 14.Rf4 Rab8 (14...Qb4 15.Bb3 Bd6 16.a3+=) 15.Bb3 (15.Rb1 Be6 16.Be6 fe6 17.Qe2= (17.Ne4? Ne4 18.Re4 Qa2–+)) 15...Qe5 (better is 15...Bf5!?=) 16.Rb1+/– Qg5 17.Ne4 Ne4 18.Re4 Bf5?? (better is 18...Bd6+/–) 19.h4+– Qg3 (19...Qg2 20.Kg2 Be4 21.Kg1+–) 20.Re7 Qh4 21.Ra7 Bg6 (21...Be4 22.Qf1 Bd5 23.Qf4 Qf4 24.ef4+–) 22.Qf3 c5 23.Qf4 Qf4 24.ef4 c4 25.Ba4 (25.Bc4 A deflection 25...Bc2) 25...Rb4 (25...Rfd8+–) 26.a3 (26.f5 Bf5 27.a3 Ra4 28.Ra4 Bc2 29.Rc4 Bb1+=) 26...Ra4 27.Ra4 Decoy theme: a4 27...Bc2 Theme: Double Attack 28.Rb4 (28.Rc4 Bb1 29.Rc7 Rd8+–) 28...Bb1+/– 29.Bg7 Kg7 30.Rb1 Ra8 31.Ra1 (31.Rb4 Ra3 32.Rc4 Rd3+=) 31...Kf6 32.Kf2 h5 33.a4 Ra5 (33...Kf5 34.g3+=) 34.Kf3 (34.Ke3 Rd5+/–) 34...Kf5 (34...Ke6 35.Ke4+=) 35.g3 (35.Ke3 Rd5+/–) 35...Rd5 (35...Ke6 36.Ra3+=) 36.Ke2 (36.Rc1 Rd4+/–) 36...Rd3 37.a5 Rg3 38.a6 Rg8 39.a7 Ra8 40.Kf3 Ke6 41.Kg3 (41.Ke4 h4+/–) 41...Kd5 (41...Kf5 42.Ra4+=) 42.Kh4+/– Ke4 43.Kh5 Kf5 The mate threat is Rh8 44.Kh6 Kf4 45.Rf1 Ke4 46.Rf7 Kd5 47.Kg6 Kc6 48.Kf6 Kb6 (48...Kd5 49.Kf5+–) 49.Ke6 Rd8 (49...Kc6 50.Ke5+–) 50.Rd7 Rc8 51.Kd5 Rc5 52.Kd4 Rc8 53.Kc3 Kc6 54.Rf7 (54.Rf7 Kd5 55.Rf5 Kc6 56.Ra5+–) 1–0. Algaba,Pedro – Fehr,Wolfgang, corr SOK–90–66, 1990.

6.fe3 e4 7.Nd4 Bd6 8.Nc3+=.

6.fe3 e4 7.Nd4 Bg4 8.Be2 Be2 9.Qe2 Bd6 10.0-0 0-0 11.Nf5 Nbd7 12.Nd6 cd6 13.c4 Rc8 14.Nc3 Nc5 15.Nd5 Nd5 16.cd5 Nd3 17.Bd4 b6 18.Qg4 Ne5 19.Qe4 f6 20.Rfc1 Qd7 21.a4 Qg4 22.Qg4 Ng4 23.a5 ba5 24.Ba7 Rc1 25.Rc1 Ra8 26.b6 Ne5 27.b7 Re8 28.Rc8 Rc8 29.bc8Q Kf7 30.Qa6 Kg6 31.Qd6 Nc4 32.Qc5 Ne5 33.Qa5 Nd7 34.Bd4 Ne5 35.Be5 fe5 36.d6 Kf6 37.d7 Ke7 38.d8Q Ke6 39.Qad5 Kf5 40.Qe7 Kg4 41.Qee5 h5 42.Qg3 1–0. RichardSommer (2050) – kumaraswamy (1995), lichess.org, 2020.

6.Be5 ef2 7.Kf2 Ng4 8.Kg3 Ne5–/+.

4.e4 Bc5

5.Bc4 Nf6 6.h3 (6.Nf3 A) < 6...Ne4 7.Qe2+= (7.Ne5 Qe7 8.Bf7 Kf8–/+); B) 6...Qd6=+) 6...Bd7 (better is 6...a6–/+) 7.Ne2? (7.Nf3 A) < 7...Ne4 8.Qe2 (< 8.Ne5 Qf6 9.Nd3 0-0=+) 8...Nd6 9.Qe5 Qe7 10.Qe7 Ke7 11.Bd5+=; B) 7...Qe7=+) 7...Qc8 (better is 7...Ne4!? 8.0-0 Nd6–+) 8.Ng3 (8.c3 Ne4 9.cd4 ed4=) 8...g6 9.Ne2 a5 10.g4 Ne4–/+ 11.Ng3 Ng3 12.fg3–/+ a4 13.Qf3 c6?? 14.Qf7+– Kd8 15.Qg7?? Kc7?? 16.Qe5+– Bd6?? 17.Qe4 Re8–+ 18.b6 Kd8 19.Qe8 Be8 20.Bd4 Bg3 21.Kd1 Qd7 22.c3 Bf4 23.Re1 a3?? 24.Be6?? Qd6?? 25.Re4 c5 26.Bf6+– Qe7 27.Be7 Ke7 28.Bd5 Kd8 29.Bb7 Ra5 30.Rf4 Rb5 31.Na3 Rb6 32.Bf3 Ba4 33.Ke2 Re6 34.Kf1 Nd7 35.Nc4 Bc2 36.Na5 Bd3 37.Kg2 Ne5 38.Rf8 Ke7 39.Rf4 Nf3?? 40.Rf3 Be4 41.Re1 Bf3 42.Kf3 Re1+= 43.Nc6 Kd6=+ 44.Na5 Ra1 45.Ke4 Ra2–/+ 46.Nc4 Kc6 47.Ke5 Ra4 48.Nd6 c4 49.d4?? Ra3 50.d5= Kc5 51.Nb7?? Kb6–+ 52.Nd8 Rc3 53.d6?? Rd3 54.Ke6 c3 55.d7 Rd7 56.Kd7 c2 57.Ne6 c1Q 58.Nc7 (58.g5 h5!–+) 0–1. manofsteel3 – wolfman, Live Game Caissa's Web, 2005.

5.Bc4 Qh4 6.Qe2=+.

5.Nf3 Qd6 6.Bc4=+.

5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 Qf6 8.0-0 g6 (8...a6 9.Qe2=) 9.d3 (9.Qe2 Ne7=) 9...Nd7 10.c3 h5 (10...Qd6 11.a4=) 11.cd4+= ed4 (11...Bd4 12.Bd4 ed4 13.Nd2+=) 12.Re1 (12.Nd2 c6+=) 12...Ne5 13.Nd2 (better is 13.Be2!?+=) 13...Nd3=+ 14.e5 Qg5?? (14...Qe6 15.Bb7 A) 15...Nb2? 16.Qc2 Rd8 17.Bc6 (17.Qb2?! Ne7+/–) 17...Kf8 18.Qc5 (18.Qb2?! Ne7+/–) 18...Qe7 19.Qc2+– (19.Qa7?! Nd3+–); B) 15...Rb8 16.Bc6 Kf8+–) 15.Nc4?? Nf2?? 16.Kf2+– Qf4 17.e6 f6 18.g3 d3 19.Kg2?? Qc4= 20.Bf6?? Nf6–+ 21.Rc1 Qa2 22.Kh1 Ng4! 23.Bg4 hg4 24.Rc5 Qh2 0–1. jorginho10 – quantum, Live Game Caissa's Web, 2007.

4.Nf3 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Ne5 cb5 (8...Qd5 9.Nf3 c5 10.Bb2+/-) 9.e3 Bd6 (better 9...de3!? 10.Bb5 Bd7 11.Bd7 Nd7 12.de3 Ngf6+/-) 10.Bb5 Bd7 (10...Kf8 11.Bd4 Qg5 12.Qf3 Be5 13.Bc5 Ne7 14.Qd5+-) 11.Nd7 Nd7 12.Qg4 (12.Bd4 Ngf6+-) 12...Ngf6 13.Qg7 Rg8 14.Bd7 Qd7 (14...Ke7 15.Qh6 Rg6 16.Qh4 Qd7 17.Bd4+- (17.Qd4?! Qc6+-)) 15.Qf6 de3 (15...Qb5 16.Qd6 (16.Bd4 Qb1 17.Ke2 Qh1 18.Qd6 Rg6 19.Qb8 Kd7 20.Qb7 Kd6+-) 16...Qb1 17.Ke2 Qh1 18.Qb8 Ke7 19.Qg8 Qa1 20.Qh7 de3 21.Qh4 Kd7 22.fe3+- (22.Ke3?! Qe1 23.Kd3 Qf1 24.Kd4 Qa1 25.c3 Qa4 26.c4 Qa1 27.Kd3 Qf1 28.Kc2 Qg2+-)) 16.fe3 Be7 (16...Rg2 17.Qh8 Bf8 18.Qe5 Be7 19.Bd4+-) 17.Qf3 Qc7 (17...Qb5 18.Nc3 Qa6 19.Bb2+-) 18.0-0 f6 19.Nc3 Qd7 (19...Qc6 20.Nd5 Kd8 21.Bf6 Bf6 22.Qf6 Qf6 23.Rf6+-) 20.Nd5 (20.Nd5 Qg4 21.Qg4 Rg4 22.Rb1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.e3 de3 9.de3 (9.Ne5? ef2 10.Kf2 Qf6 11.Ke1 Be5-+; 9.fe3?! Nd7=) 9...Nf6 (better 9...Nd7!?=) 10.Be5+/- Bb4 (10...Be5 11.Qd8 Kd8 12.Ne5+/-) 11.c3+- Qd1 12.Kd1 Bd6 13.Bf6 gf6 14.Bd3 Bg4 15.Nbd2 c6 16.Kc2 Bf3 (16...cb5 17.Rb1+-) 17.Nf3 0-0 18.Nd4 cb5 19.Rb1 b4 20.Nf5 Bh2 (20...Rd8 21.Nd6 Rd6 22.Rb4+-) 21.Rb4 (21.Rh1 b3 22.Kd2 Nc6 23.Rh2 Ra8+-) 21...Nc6 22.Nh6 (better 22.Rb7 Ra8 23.Bc4+-) 22...Kg7 23.Nf5 Kh8?? (better 23...Kg8=) 24.Rb7+- Ne5 25.Be2 Ng6 26.f4 Re8 (26...Bg1 27.Bc4+-) 27.Nd6 Re6 (27...Nf4 28.Bc4 Ng2 29.Ne8 Ne3 30.Kd3 Nc4 31.Kc4 Be5+-) 28.Rb8 Kg7 (28...Nf8 29.Rf8 Kg7 30.Rf7 Kh8+-) 29.Nf5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Bd6 6.e3 Nf6 7.Bc4 (7.ed4!? ed4 8.Bd4+=) 7...0-0= 8.0-0 (8.Na3 de3 9.de3 Nbd7=+) 8...Bg4 (8...ab5!? 9.ab5 Ra1 10.Ba1 e4 11.Nd4 Bh2 12.Kh2 Ng4 13.Kg3 h5=+) 9.h3= (worse 9.ed4 e4 10.h3 Bh5-+ (10...ef3 11.hg4 ab5 12.ab5 Ra1 13.Ba1 Ng4 14.Qf3=)) 9...Bh3?? (better 9...Bh5 10.g4 Bg6+=) 10.gh3+- Qc8 11.Kg2 b6? (11...c5 12.d3+-) 12.Rg1 (12.ed4 ed4 13.Nd4 c5+-) 12...Qb7 (12...c5 13.Na3+-) 13.ed4 e4 (13...ab5 14.ab5 Nbd7 15.Ra8 Ra8 16.de5 Ne5 17.Be5 Be5 18.Re1+-) 14.Ne5 e3 (14...ab5 15.ab5 (worse 15.Bb5 c6 16.Be2 Qc7+-) 15...Ra1 16.Ba1+-) 15.Qf3 Qf3 16.Kf3 ef2 17.Kf2 Ne4 (17...ab5 18.ab5 Ra1 19.Ba1+-) 18.Ke3 Nf6 19.Nc3 Re8 (19...ab5 20.ab5 Ra1 21.Ra1 Nbd7+-) 20.Bf7 Kh8 21.Be8 Ne8 22.Nd5 Be5 (22...Kg8+-) 23.de5 Nd7 24.Raf1 ab5 25.e6 Ndf6 (25...h6 26.ed7 Kh7 27.Rf8 g5 28.Re8 c5 29.Ra8 Kg6 30.d8Q Kh5 31.Qe8 Kh4 32.Nf6 Kh3 33.Qh5) 26.Nf6 gf6 (26...Nf6 27.Rf6 Kg8 28.Rf7 g6 29.Rg7 Kf8 30.Rf1 Ke8 31.Rff7 ba4 32.Rg8) 27.Rf6 Nf6 (27...Ng7 28.Rf8! Rf8 29.Bg7 Kg8 30.Bf6) 28.Bf6 1-0. GuestNDSG – GuestJHXR, freechess.org, 2020.

5.a4 Nd7 6.e3= c5 (6...de3 7.de3 (7.Ne5? ef2 8.Kf2 Qf6 9.Ke1 Ne5-/+; 7.fe3?! e4=) 7...e4 8.Nd4=) 7.ed4 (7.bc6 bc6 8.ed4 Rb8+=) 7...cd4= 8.Bc4 h6 (8...Bd6 9.Qe2=) 9.0-0 (9.Qe2 Qe7+/-) 9...Ngf6 (9...Qc7!? 10.Qe2 Ne7+=) 10.Re1 Bd6 11.Nd4 0-0 12.Nf5 (12.Nf5 Bb8 13.ba6 ba6 14.Nc3+/-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 f6 6.e3 de3 7.fe3 Bg4 8.Bd3 (8.Nc3 Bb4+/-) 8...Nh6 (8...ab5 9.Bb5 c6 10.Be2+=) 9.0-0 (better 9.Nc3+/-) 9...f5? (better 9...ab5 10.ab5 Ra1 11.Ba1 Nd7+=) 10.Be5+- Bd6? (10...Nf7 11.Bf4 ab5+-) 11.Bg7 Rg8 12.Bh6 Bh3 (12...Qf6 13.Bc4 Rg6+-) 13.Bg5 Be7 (13...Bg2 14.Kg2 (14.Bd8?! Bf3 15.Kf2 Bd1+-) 14...Rg5 15.Ng5 Qg5 16.Kh1+-) 14.gh3 (14.gh3 Bg5 15.Nc3 Bf6 16.Kh1 Bc3 17.dc3+-) 1-0. GuestVVGT – GuestDLWQ, freechess.org, 2020.

4.Nf3 c5

5.e3 f6 6.Bc4 Bd6 7.0-0 e4 8.Nh4+- Qe7? (better 8...Ne7!? 9.d3 Qc7 10.de4 Nd7+-) 9.Qh5 g6 (9...Kf8 10.ed4 cd4 11.Bd4 Nh6+-) 10.Ng6! 1-0. Anony – PIERRE, internet, 2015.

5.Ne5 Qd5 6.Nf3 a6 7.a4 (7.e3!? de3 8.fe3+/-) 7...ab5+= 8.ab5 (8.e3!? ba4 9.Bb5 Bd7 10.c4+=) 8...Ra1=+ 9.Ba1 Bg4 (9...Qa2 10.Bd4 cd4 11.Nd4=+) 10.e3 (10.Bb2 Bd6+=) 10...Nf6?? (10...Qa2 11.Nc3 dc3 12.Bc3-/+) 11.h3?? (11.Na3 Bf3 12.gf3 Bd6+=) 11...Bh5?? (11...Bf3!? 12.gf3 Qa2-/+) 12.Be2 (better 12.Na3+/-) 12...Bd6?? (12...Qa2 13.Bd4 cd4 14.g4=+) 13.0-0?? (13.ed4 Nbd7+-) 13...0-0?? (better 13...Qa2 14.Bd4 Bf3 15.Bf6 Be2 16.Qe2 gf6=) 14.d3 (14.ed4 c4 15.Nc3 Qe6+-) 14...de3 15.fe3 Re8 (15...Qe6 16.Bf6 Qe3 17.Kh1 gf6 18.Nbd2+/-) 16.e4 (16.Bf6 Qe6 17.Bh4 Qe3 18.Rf2 Bf3 19.Bf3 Qd4+-) 16...Qe6 17.Ng5 Qe7?? (better 17...Be2 18.Qe2 Qe7+-) 18.Bh5 Nh5 (18...Rf8 19.Bf7 Rf7 20.Nf7 Qf7+-) 19.Qh5 h6 20.Nf3 (better 20.Bg7 Bh2 21.Kh1+-) 20...Nd7 21.Qg4 Ne5 22.Ne5 Be5 23.Be5 Qe5 24.Nd2 Qc3 25.Nf3 Qc2 26.Nh4 (better 26.Qd7 Rb8+-) 26...Qd3 (26...Qc3+-) 27.Nf5 Qc3 (27...g6 28.Nh6 Kh8+-) 28.Nh6 Kh7 29.Nf5 (29.Nf7 Kg8 30.Qh5 Qd4 31.Kh1 Kf8 32.Nh6 Ke7 33.Nf5 Kd8 34.Nd4 b6 35.Nc6 Kd7 36.Rf7 Re7 37.Re7 Kd6 38.Qe5) 29...g6 (29...Qe5+-) 30.Qh4 Kg8 31.Nh6 Kg7 32.Nf7 (32.Rf7 Kh8 33.Nf5 Kg8 34.Qh7) 32...Rf8 33.Ng5 (33.Qe7 Qe3 34.Kh2 Qf3 35.Rf3 b6 36.Ng5 Kh6 37.Rf8 c4 38.Rh8) 33...Qd4?? (33...Qe3 34.Rf2 Qe1 35.Kh2 Rf2 36.Ne6 Kf7+-) 34.Kh1 (better 34.Rf2 Qa1 35.Kh2 Rf2 36.Qf2 Qe5 37.Qg3+-) 34...Rf1 35.Kh2 (35.Kh2 Qg1 36.Kg3 Qf2 37.Kh2 Qh4 38.Ne6 Kh6 39.g3 Rf2 40.Kg1 Qg3 41.Kh1 Qg2) 1-0. Jimito100 (2010) - troterocom (1905), Rated Bullet game, lichess.org, 2020.

5.Ne5 Bd6 6.Nc4 a6 7.Nd6 Qd6 8.a4 (8.e3 Ne7+/-) 8...ab5 9.ab5 Ra1 10.Ba1 Bg4 11.h3 Be6 12.e3 Nf6 13.Be2 de3 (13...0-0 14.Bb2+/-) 14.de3 Ne4 (better 14...Qe7!?+/-) 15.Qd6+- Nd6 16.Bg7 Rg8 17.Be5 Rg2?? (17...Ke7+-) 18.Bd6 Nd7 19.Bf3 Rg5 (19...Rg6 20.Be4 f5 21.Bb7+-) 20.Bb7 Ne5 (20...Rg6 21.Bc7+-) 21.f4 (21.f4 Nc4 22.fg5 Nd6 23.Bc6 Kd8 24.Nc3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Ne5 Bd6 6.Nc4 Nf6 7.e3 0-0 8.Nd6 (8.Bd3 Re8+/-) 8...Qd6 9.Be2 (9.Na3+/-) 9...Ne4 (9...Re8 10.0-0+=) 10.Bf3 (better 10.d3 Nf6 11.ed4+-) 10...Bf5?? (better 10...Re8+/-) 11.d3+- Ng5 (11...Nf2 12.Kf2 de3 13.Ke3+-) 12.Bb7 Nd7 13.Ba8 Ra8 14.0-0 (14.h4 Qd5 15.Kf1 Ne6+-) 14...Qg6 (14...Nf6 15.f4 Ng4+-) 15.ed4 Bh3 (15...Rb8 16.Na3 Qf6+-) 16.dc5 (better 16.gh3 Re8 17.Kh1 cd4+-) 16...Bg2 (16...Nc5 17.Ba3 Rc8 18.gh3 Nh3 19.Kh1+-) 17.Kg2 Ne6 (17...Nc5 18.Qg4 h5 19.Qg3+-) 18.Kh1 Ndc5 (18...Qf5 19.d4 Nf6 20.Nd2+-) 19.Qf3 Rb8 (19...Rc8 20.Rg1 Qh6 21.Na3+-) 20.Rg1 Ng5 (20...Qh6 21.Qf5 Rd8 22.Bg7 Ng7 23.Qc5+-) 21.Qf4 Rb5 22.Rg5 Qc6 23.Kg1 Rb2 24.Qd4 Rb1 25.Rb1 f6 26.Rc5 (26.Rc5 Qa8 27.Qc4 Kf8 28.Rc7 Qe8 29.Rb8 h6 30.Qf7) 1-0. GuestPCMQ – GuestPBCD, freechess.org, 2020.

5.Ne5 Bd6 6.Nf3 Bg4 7.e3 White fights for the Initiative 7...Nf6 8.h3 Bh5 9.ed4 Qe7 (9...0-0 10.Be2+–) 10.Qe2+– Bf3 11.Qe7 Be7 (11...Ke7 12.gf3 Nbd7 13.dc5 Nc5 14.Nc3+–) 12.gf3+– Nd5 (better 12...Nbd7+–) 13.Bd3 0-0 (13...Nd7 14.Be4 Nc7 15.dc5 Nc5 16.Rg1+–) 14.Be4 Rd8 15.dc5 Bc5 16.Rg1 g6 17.Kf1 (17.c4 Nf4 18.Bb7 Nd3 19.Ke2 Nb2 20.Ba8 Re8 21.Kf1 Nc4+–) 17...a6 18.Rg5 Nb4 (18...f5 19.Bf5 Nc7+–) 19.Rc5 f5 (19...Nd7 20.Rc4 Nd5 21.Bd5+–) 1–0. DEFFM – GuestZJKH, freechess.org, 2020.

5.Ne5 f6 6.Nf3 g5 7.h3 h5 (7...Nd7 8.e3 Nb6 9.a4+–) 8.e3 Bg7 9.ed4 cd4 (9...g4 10.Qe2 Kf7 11.hg4 hg4 12.Rh8 Bh8 13.Qc4 Kg7+–) 10.Bd4 (better 10.Nd4 f5 11.c3 Bd4 12.cd4+–) 10...g4+= 11.hg4 hg4 12.Rh8 Bh8 13.Qe2 (better 13.Bc5 Qd5 14.Qe2 Kd8 15.Qc4 Qc4 16.Bc4 gf3 17.Bg8+=) 13...Kf7?? (better 13...Ne7=) 14.Qd3 (better 14.Qe4 Qe7 15.Bc4 Ke8 16.Ng5 fg5 17.Qe7 Ke7 18.Bh8+–) 14...gf3?? (better 14...Qe8 15.Be2 gf3 16.Qf3 Qe7 17.Qh5 Kg7+–) 15.Qh7 (15.gf3?! Bg7=) 15...Bg7 (15...Ke8 16.Qg8 Kd7 17.Qd5 Ke8 18.Qh5 Kd7 19.Qf3 Qe8 20.Be2 Kd8+–) 16.Qh5 Ke7 17.Bc5 Ke6 18.Bc4 Kd7 19.Qd5 Kc7 20.b6! (20.Qg8?! Qg8 21.Bg8 fg2+=; 20.Qf3?! Bf8 21.Qg3 Bd6 22.Bd6 Qd6 23.Bg8 Qg3 24.fg3 Bf5+–) 20...ab6 21.Bb6! Kb6 22.Qd8 Ka7 23.Na3 fg2 (23...Nd7 24.Rb1 Kb8 25.Nb5 Ra4 26.Qc7 Ka8 27.Qc8 Nb8 28.Nc7 Ka7 29.Qb7) 24.Nb5 Ka6 25.Nd6 Ka7 (25...b5 26.Bb5 Ka7 27.Qc7 Bb7 28.Qb7) 26.Nc8 1–0. Silent Move (2115) – Arayn, redhotpawn.com (1), 2016.

5.Ne5 Nf6 6.e3 Bd6 (6...Nbd7 7.ed4 cd4 8.Nf3+/-) 7.ed4 (7.Nc4 0-0+/-) 7...cd4 8.Bd4 Be5 (8...0-0 9.Nc4+/-) 9.Be5 Qe7 (9...0-0 10.Bf6 Qf6 11.Nc3+/-) 10.Qe2+- 0-0 11.Bb8 Qe2 12.Be2 Rb8 13.0-0 (13.Nc3 Rd8+-) 13...Bf5+/- 14.d3 Rbc8 (14...Rfe8 15.Bd1+/-) 15.c4+- Rfd8 16.Rd1 Bg4 (16...Rd7 17.Nc3+-) 17.Bg4 Ng4 18.Nc3 Ne5? (better 18...Rd4!?+/-) 19.Nd5+- Kf8 20.a4 (20.Rab1 Rd6+-) 20...f6 (20...Rd6 21.f4 Nd7 22.a5+-) 21.a5 Rd6 (21...Re8 22.b6 ab6 23.Nb6+-) 22.f4 Ng6 (22...Nd7 23.Kf2+-) 23.Re1 Rc5 (23...Rd7 24.a6 b6 25.Re4+-) 24.g3 Rdd5 (24...a6 25.ba6 Ra6+-) 25.cd5 Rd5 26.b6 ab6 27.ab6 Rd3 (27...Rd6 28.Reb1 Ne7+-) 28.Ra8 Kf7 29.Rb8 Rd7 30.Rc1 Ne7 (30...Ke6 31.Rc7 Rd1 32.Kg2 Rd2 33.Kh3+-) 31.Rc7 Ke6 (31...Rd1 32.Kg2 Rd2 33.Kh3 Ke6 34.Rcb7 Nc6 35.Re8 Kd6 36.Rg7 h5+-) 32.Rd7 Kd7 33.Rb7 Kd6 (33...Kc6 34.Re7 Kb6 35.Rg7 h6+-) 34.Re7! Ke7 35.b7 1-0. GuestFVNG – GuestCHFQ, freechess.org, 2020.

4.Nf3 Bc5

5.Ne5 Qd5 6.Nf3 Nf6 7.e3 Ne4 (7...Bg4 8.ed4 Bf3 9.Qf3 (9.gf3?! Bd4 10.c3 Bb6=) 9...Qf3 10.gf3+/-) 8.ed4 (8.Nd4 0-0+-) 8...Bb4 9.a3 Ba5 10.Bd3 Bf5 (10...0-0 11.c4 Qe6 12.0-0+-) 11.c4 (11.Nh4 Be6+-) 11...Qd7? (11...Qe6 12.d5 Qe7 13.Qe2+-) 12.Qe2 (better 12.Ne5 Qe7 13.Qf3+-) 12...0-0 (12...Qe7 13.0-0 Nd6+-) 13.Be4 Be4 14.Qe4 Re8 15.Ne5 White prepares d5 15...Qe6 (15...c6 16.0-0+-) 16.0-0 c6 17.d5 cd5 18.cd5 Qe5 (18...Qf6+-) 19.Be5 Re5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Ne5+= Be6 6.e3+/–.

5.Ne5 Qe7 6.Nd3+/- Bf5 7.Nc5+- Qc5 8.e3 Bc2? (better 8...de3 9.fe3 Nf6+/-) 9.Qc1 d3 (9...Qf5 10.Na3 Be4+-) 10.Bg7 (better 10.Bd3 Nf6+-) 10...Qb5 (10...Nd7 11.Bh8 f6 12.Na3+-) 11.Qc2!! dc2 12.Bb5 c6 13.Na3 (better 13.Nc3 cb5 14.Bh8+-) 13...c1Q (13...cb5 14.Bh8 f6 15.Nc2 Nc6+-) 14.Rc1 cb5 (14...Nh6 15.Bh8 cb5 16.Nb5+-) 15.Nb5 Nd7 (15...Na6 16.Rc7 Ne7 17.Bh8 Rb8 18.Nd6 Kd8 19.Rb7 Rb7 20.Nb7 Kc7+-) 16.Nc7 Ke7 17.Na8 Ngf6 18.Bh8 1-0. DEFFM – GuestFQPD, freechess.org, 2019.

5.Ne5 Qe7 6.Nd3+/- Nf6 7.c3 dc3 8.Nc3+/-.

5.Ne5 Qe7 6.Nd3 Nf6 7.e3 Bg4 8.Be2 h5 (8...Be2 9.Qe2 (9.Ke2?! de3 10.de3 Nbd7+=) 9...de3 10.Nc5 Qc5 11.Bf6 gf6 12.Qe3 Qe3 13.fe3+–) 9.Nc5 Qc5 10.Bd4 (10.f3 Bd7 11.Bd4 Qg5+–) 10...Qg5 (10...Be2 11.Qe2 (11.Bc5 Bd1 12.Kd1 Ne4=+; 11.Ke2?! Qb5 12.Ke1 Qd5+–) 11...Qc2 12.Nc3+–) 11.0-0 Be2 (11...Kd8 12.a4+–) 12.Qe2 Ng4 (12...Nbd7 13.Nc3+–) 13.f4 Qd5 (13...Qh4 14.h3 Nf6 15.Qf3+–) 14.Nc3 (14.Bg7 Rg8 15.Nc3 Qe6+–) 14...Qd6 (14...Qf5 15.Bg7 Rg8 16.Be5+–) 15.Qf3 c6 16.Bg7 Rg8 17.Qe4 Kd7 (17...Qe6 18.Qh7 f5 19.Qh5 Kd7 20.Bd4+–) 18.Qf5 (better 18.Qh7 Re8+–) 18...Kd8 (18...Ke7 19.Bd4 Qg6 20.Qc5 Kd7 21.bc6 Nc6 22.Qd5 Ke8+–) 19.Qf7 Re8 (19...Rg7 20.Qg7 Qe7 21.Qh8 Qe8 22.bc6 bc6 (22...Qh8?? 23.cb7 Ke7 24.ba8Q+–) 23.Qe8 Ke8+–) 20.Qb7 Qd2 (20...Re7 21.Qa8 Rg7 22.bc6 Qc6 23.Qb8 Qc8 24.Qd6 Rd7 25.Qf8 Kc7 26.Qc5 Kd8 27.Qg5 Kc7+–) 21.Rad1 Nd7 (21...Re7 22.Rd2 Rd7 23.Rd7 Nd7 24.Rd1 Ngf6 25.Bf6 Ke8 26.Qd7 Kf8 27.Qe7 Kg8 28.Qg7) 22.Rd2 Ne3 (22...Re7 23.Qa8 Kc7 24.bc6 Nc5 25.Qd8 Kc6 26.Rd6 Kb7 27.Rb1 Nb3 28.Rb3) 23.Rd7 (23.Qd7?!=) 1–0. DEFFM – GuestNLYC, freechess.org, 2020.

5.Ne5+= f6 6.Nd3+/– b6 (better is 6...Be7!?+/–) 7.Nc5+– bc5 8.c3 (8.e3 Qd5+–) 8...dc3 (8...c6 9.cd4 cd4 10.e3 de3 11.Qh5 g6 12.Qe2+–) 9.Nc3 c6 10.e4 cb5 (10...Qd6 11.Bc4+–) 11.Qh5 g6 12.Bb5 Bd7 (12...Nd7 13.Qc5 a6 14.Nd5+–) 13.Qc5 (better is 13.Qd5 Bb5 14.Qa8+– (14.Nb5?! Qd5 15.Nc7 Kd8 16.Nd5 Nd7+–)) 13...Bb5 (13...a6 14.Bc4 Bc6+–) 14.Nb5 Na6 15.Qc6 Ke7 16.Qa6 Qd7 (16...Qb6 17.Qb6 ab6+–) 17.Rc1 Rb8 18.Rc7 (18.Rc7 Qc7 19.Nc7 Rb2 20.Qe6 Kd8 21.Qd6 Kc8 22.Nd5+–) 1–0. Tiedemann,Joern (2125) – Korn,Lothar (1700), remoteschach.de, 2009.

5.Ne5 Qf6 6.Nd3 Bf5?? (better 6...Bb6+-) 7.Nc5 c6 (7...Qd6 8.Nb3 c5 9.e4+-) 8.Nb7 (8.e3!? Qg6 9.e4 Bc8 10.Bd4 b6+-) 8...cb5 9.e3 (9.e4 Bc8 10.Bb5 Nd7 11.Bd7 Bd7+-) 9...Nc6 10.Bb5 Nge7 11.Bd4 Qg6 12.Bc5 (12.Qf3 0-0 13.Bc5 Rfb8+-) 12...Qg2 (12...0-0 13.Qf3 Bg4 14.Qf4+-) 13.Nd6 Kd7 14.Rf1 Bg4 15.f3 Bh5 (15...Bh3 16.e4 Qg5 17.d4+-) 16.Nc3 Qh2 (16...Rhb8 17.d4 Rb5 18.Ncb5 Qh2 19.c4+-) 17.d4 Qh4 (17...Qg3 18.Kd2 a6 19.Ba4+-) 18.Kd2 Kc7 (18...a6 19.Ba4 Rhd8 20.Rb1+-) 19.Qe2 Nd5 20.Nd5 Kd7 (20...Kd8 21.Bc6 Qg5 22.Nb7 Kc8 23.Qa6 Qe3 24.Ke3 Re8 25.Be8 Bg6 26.Bd6 Bc2 27.Qc6) 21.Bc6 Kc6 (21...Ke6 22.f4 g6 23.f5 gf5 24.Rf5 f6 25.Qg2 Rhf8 26.Nc7 Ke7 27.Nf7 Kf7 28.Bd5) 22.Qb5 Kd5 23.Qb3 Kc6 24.Qb7 1-0. DEFFM – Monjur, freechess.org, 2019.

5.Ne5 Nf6 6.e3 de3 (6...0-0 7.Nd3 Bb6 8.Na3+=) 7.fe3+/- 0-0 8.Bc4 Ne4? (better 8...a6 9.0-0 Qe7+/-) 9.0-0+- Bd6?? (better 9...Be6 10.Be6 fe6 11.Rf8 Qf8+-) 10.Nf7 Qh4 11.Nd6 Kh8 (11...Rf7 12.Rf7 Nf6 13.Bf6 Qc4 14.Qh5 Bd7 15.Rg7 Kf8 16.Rf7 Qf7 17.Qf7) 12.Rf8 1-0. GuestSCVM – GuestYGWM, freechess.org, 2019.

4.Nf3 c6

5.a4 a6 6.e3 (better 6.Ne5 Nf6 7.e3 de3 8.fe3 ab5 9.ab5 Ra1 10.Ba1+/-) 6...Bd7? (6...de3 7.fe3 e4=) 7.Ne5+- Nf6 (7...de3 8.fe3 Be6 9.Bd3+-) 8.Bc4 (8.ed4 ab5 9.ab5 Ra1 10.Ba1 Be6+-) 8...Be6 9.Be6 fe6 10.Bd4 c5 (10...ab5 11.ab5 Ra1 12.Ba1+-) 11.Bb2 ab5 12.ab5 Ra1 13.Ba1 Qa5 (13...Be7 14.0-0 0-0 15.Nc4+-) 14.Nc3 Nd5 (14...Nbd7 15.Nc4 Qa7+-) 15.Nd5 ed5 16.Qh5 (16.0-0!? Qb5 17.Qh5 g6+-) 16...g6 17.Ng6 Qa1 18.Ke2 Qh1 19.Nh8 Kd8 (19...Kd7 20.Qd5 Kc7+-) 20.Qe5 Qg2 (20...Nc6 21.Qd5 Kc7+-) 21.Qb8 Ke7 22.Qb7 Ke8 23.Qf7 Kd8 24.Qf8 Kc7 25.Qc5 Kd7 26.Qc6 Ke7 27.Qc7 Ke6 28.Qc8 (28.Qh7?! Qg4 29.Ke1 Qg1 30.Ke2 Qg4 31.f3 Qg2 32.Ke1 Qg1 33.Ke2 Qg2 34.Kd3 Qf1 35.Kc3 Qc4 36.Kb2 Qb5 37.Kc3 Qc4 38.Kb2 Qb5 39.Kc1 Qf1 40.Kb2 Qb5=) 28...Ke7 29.b6 Qh2 30.b7 Qh5 31.Kd3 Qh4 (31...Qe5 32.b8Q Qe4 33.Kc3 Qc4 34.Qc4 dc4 35.Kc4 Ke6 36.Qc8 Kf6 37.Qd8 Ke6 38.f4 h5 39.e4 h4 40.d4 h3 41.f5) 32.Qc7 Ke6 (32...Kf6 33.Qd8 Ke6 34.Qh4 Kd7 35.b8Q Kc6 36.Qe7 h5 37.Qbb7) 33.Qf7 Ke5 (33...Kd6 34.b8Q Kc6 35.Qfc7) 34.b8Q 1-0. DEFFM – GuestWXMM, freechess.org, 2019.

5.a4 cb5 6.ab5 Bc5 (better is 6...Nd7!?=) 7.Ne5+/– Nf6 8.e3 0-0 9.Nd3 Bb6 10.Be2 (10.Qf3 Qc7+/–) 10...de3 (10...Qd5 11.Bf3 Qb5 12.Na3+= (< 12.Bd4 Bd4 13.ed4 Re8 14.Be2 Nc6–/+; < 12.ed4 Re8 13.Be2 Nc6–/+)) 11.de3 (11.fe3 Nbd7+/–) 11...Bf5 (11...Ba5 12.Bc3 Bc3 13.Nc3+/–) 12.0-0 (12.Bf3 Ne4 13.Nd2 Nd6+–) 12...Bd3 (12...Nbd7!?+/–) 13.Bd3 Nbd7 14.Qf3 Re8 (14...Qb8 15.Nd2+–) 15.Qb7 Nc5 (15...Ne5 16.Be5 Re5+–) 16.Bf6?? Nb7?? 17.Bd8+– Rad8 18.Nd2 Nc5 19.Ra3 Nd3 20.cd3 Bc5 21.Rc3 Bb4 22.Rc2 Rd3 23.Nf3 Rc3 24.Rc3 Bc3 25.Rc1 Bf6 26.Ra1?? Ra8 27.Ra6 h6 28.b6 Bd8?? 29.Ra7 Ra7?? 30.ba7+– Bb6 31.a8Q Kh7 32.Qe4 g6 33.Qe7 Kg7 34.Ne5 Ba5 35.Qf7 (35…Kh8 36.Ng6) 1–0. MasterofDisaster – BEACHBUM, Caissa's Web, 2004.

5.a4 Bd6 6.e3 f6? (better 6...Nf6!?+=) 7.ed4+- Bg4 (7...ed4 8.Bd4 Nh6 9.Nc3 Qe7 10.Be2+/-) 8.h3 Bh5 9.g4 (9.Be2 Bf3 10.Bf3 ed4 11.Bd4 Ne7+-) 9...Bg6 10.de5 Be5 (10...fe5 11.Bc4+-) 11.Qe2 Qe7 12.Ne5 fe5 13.Bg2 1-0. DEFFM – GuestNFNL, freechess.org, 2019.

5.a4 Nd7 6.e3 c5 7.ed4 ed4 8.c3=.

5.a4 f6 6.e3 c5 7.ed4 cd4 8.Bc4 Bc5 (8...Nd7 9.0-0+/-) 9.0-0 Ne7 10.Ne5?? (better 10.Re1+/-) 10...fe5-+ 11.Qf3 Rf8 12.Qh5 Ng6 13.Bd3 Qf6 14.Na3 (14.Ba3 Nd7-+) 14...Be6 (better 14...Bf5 15.f4 A) 15...ef4? 16.Rf4 Qe5 17.Rf5 (17.Bf5?? Qf4 18.Bg6 hg6 19.Qe2 Kd8-+) 17...Rf5 18.Qf5 Qf5 19.Bf5+-; B) 15...Bd3 16.cd3 Qf5 17.Qf5 Rf5 18.fe5 Re5-+) 15.f4=+ ef4?? (better 15...Qf7 16.fe5 Nf4 17.Qh7 Qe7 18.Rf4 Rf4-+) 16.Qc5+- Nd7 17.Qd6 (better 17.Qd4 0-0-0 18.Rae1 Qd4 19.Bd4+-) 17...Kf7? (better 17...Nde5 18.Rae1 Kf7 19.Bd4 Rad8 20.Qc7 Rd7 21.Be5 Rc7 22.Bf6 gf6 23.Bg6 hg6 24.Rf4 Rfc8+-) 18.Bd4 Qe7 (18...Qd8 19.Nc4 Nf6 20.Bg6 Kg6 21.Qf4+- (21.Qe6?! Qd4 22.Kh1 Rae8=)) 19.Bg6 (19.Nc4 Rfd8 20.Rae1 Ndf8 21.Qe7 Ne7 22.Rf4 Kg8+-) 19…Kg6 1-0. DEFFM – GuestMMPR, freechess.org, 2019.

5.Ne5 cb5 6.e3 a6 7.Bd4 (7.ed4 Nc6 8.Nc6 bc6+/-) 7...Nc6 (7...Ne7 8.Qf3 f6 9.Nd3+/-) 8.Nc6+- bc6 9.Bd3 c5 10.Qf3 Ra7 (10...Bd7 11.Be5 Rc8 12.Nc3+-) 11.Bc5! Bc5 12.Qc6 Bd7 (12...Rd7 13.Qc5 Rd5 14.Qb4+-) 13.Qc5 Rc7 14.Qe5 Ne7 (14...Be6 15.Qg7 Qf6 16.Qg3+-) 15.Qg7 Rg8 16.Qh7 Rg2 17.Nc3 b4 (17...Bc6 18.Ke2 Ng6 19.Bg6 fg6 20.Qh8 Kd7 21.Qh3 Ke8+-) 18.Ne4 (better 18.Nd5 Rc6 19.Qh4+-) 18...Bf5 (18...Nf5 19.Qh8 Ke7 20.Qf6 Ke8 21.Qe5 Kf8+-) 19.Nf6 Kf8 20.Qh6 Rg7 21.Nh5 Rc6 22.Qg7 (22.Qg7 Ke8 23.e4+-; 22.Ng7? Rh6 23.Nf5 Nf5 24.Bf5 Qf6-+) 1-0. DEFFM – GuestXTBW, freechess.org, 2020.

5.Ne5 cb5 6.e3 Bd6 7.Bb5+- Bd7 (7...Kf8 8.ed4 Be5 9.de5+-) 8.Nd7 Nd7 9.Bd4 (worse 9.ed4 a6 10.Bd3 Qc7+-) 9...Ngf6 10.Bf6 gf6 (10...Qf6 11.Bd7 Kd7 12.Nc3+-) 11.Qg4 a6 12.Qe4 Be7 13.Bc4 Rc8 14.0-0 Qc7 15.Bb3 Qe5 16.Nc3 (worse 16.Qb7 Rb8 17.d4 Rb7 18.de5 fe5+-) 16...Qe4 17.Ne4 Nc5 (17...b5 18.d4+-) 18.Nc5 Bc5 19.Bd5 Ba3 20.c4 b5 21.Rab1 bc4 22.Bc4! a5 (22...Rc4 23.Rb8 Double attack (23.Rb8 Decoy)) 23.Rb7 0-0 24.d3 Kg7 25.Rfb1 Bb4 26.R1b4 (26.h3!? Rb8 27.Ra7 f5+-) 26...ab4 27.Rb4 Rb8 28.a3 Ra8 29.a4 Rfb8 30.Bb5 Rc8 31.g3 Rc3 32.Kg2 Rb8 33.Rg4 Kf8 34.Kf3 Rbc8 35.Rf4 Kg7 36.Rc4 R8c4 37.dc4 Kf8 38.a5 Ke7 39.g4 (39.a6 Rc2+-) 39...Rc2 40.h4 Ra2 41.a6 Kd6 42.Kg3 Kc5 (42...Ke5 43.h5+-) 43.f3 Ra5 44.Kf4 Ra3 45.Ke4 Kb6 (45...f5 46.gf5 f6 47.Kf4+-) 46.f4 Kc7 (46...f5 47.gf5 f6 48.Kd4+-) 47.Kf5 Re3 48.Kf6 Kb6 49.f5 Re4 50.h5 (50.g5!? Rh4 51.Kf7 Rh5+-) 50...Rg4 51.Kf7 Rg5 52.f6 Rh5 53.Ke6 Rh6 54.c5! Ka7 (54...Kc5 55.a7 Passed pawn) 55.Ke7 Rh1 (55...Rh4 56.f7 Rf4+-) 56.f7 Rb1 57.f8Q Re1 (57...Rb5 58.c6 Rb8+-) 58.Kf6 (58.Kf6 Re5 59.Qf7 Re7 60.Qe7 Ka8 61.Qb7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Ne5 cb5 6.e3 de3 7.Bb5 Nc6? (7...Bd7 8.de3 Qa5 9.Nc3 A) 9...Bb5?? 10.Qd5 Nh6 11.0-0-0+- (11.Qb5?! Qb5 12.Nb5 Na6+-); B) 9...Nf6+-) 8.Nc6 (8.fe3?! a6 9.0-0 ab5 10.Nf7 Qh4 11.Nh8 Bg4+-) 8...ed2 (8...bc6 9.Bc6 Bd7 10.Ba8 ef2 11.Kf2 Qb6 12.Kf1 Qb2+-) 9.Nd2 Qd6 (9...bc6 10.Qe2 Ne7+-) 10.Qe2 Be7 11.Ne7 Bd7 12.Nf5 Ne7 13.Nd6 (13.Nd6 Kf8 14.Bd7 Nc6 15.Nf7 Nb4 16.Nh8 Nc2 17.Kd1 Ne3 18.fe3 Ke7 19.Qg4 Kd8 20.Nf7 Kc7 21.Qe6 b6 22.Qc6 Kb8 23.Be5) 1-0. DEFFM – GuestGFHG, freechess.org, 2021.

5.Ne5 cb5 6.e3 f6?? 7.Bb5 Nc6 8.Nc6 bc6 9.Bc6 Bd7 10.Ba8 Qb8 1-0. DEFFM – kall, freechess.org, 2021.

5.Ne5 Be6+=.

4.Nf3 Qd5

5.c4 dc3 6.Nc3+/- Qd6 7.e4 (7.Qc2 Nf6+/-) 7...Bg4 (7...Nf6 8.Be2 Be7 9.0-0+/-) 8.Bc4 Bf3 9.Qf3 (worse 9.gf3 Nd7+=) 9...Nf6 10.Nd5 Nd5? (better 10...Nbd7+-) 11.Bd5 (11.ed5?! Nd7+=) 11...f6 (11...a6 12.Qf5 Nd7 13.Qf7 Kd8 14.Bb7 Ra7 15.ba6 Nc5+-) 12.Bb7 Qb4 13.Qb3 Qe4 (13...a6 14.Ba8 ab5+-) 14.Be4 (14.Be4 Bd6 15.Qe6 Kd8 16.Ba8+-) 1-0. DEFFM – GuestBBXT, freechess.org, 2019.

5.c4 Qc4 6.Ne5 Qb4 7.Qb3 Qb3 8.ab3 Bc5 9.Nd3 Bb6 10.Na3 Be6 (10...Nf6 11.g3+/-) 11.Nc4 Nd7 12.Nb6 Nb6 (12...cb6!? 13.Bd4 Ngf6+/-) 13.Bd4+- f6 (13...Nf6+-) 14.Nc5 Bf7 15.Nb7 Bb3 16.Rc1 Rc8 (16...Ne7 17.e4 Rc8 18.Be2+-) 17.Bb6 ab6 18.Nd6!! Ke7 (18...cd6 19.Rc6 Double attack (19.Rc8 Pinning; 19.Rc8 Deflection; 19.Rc6 Decoy)) 19.Nc8 (19.Nc8 Kd7 20.Rc3+-) 1-0. GuestRXWT – GuestSQXY, freechess.org, 2019.

5.c4 Qc4 6.Ne5 Qb5 7.Bd4 Nc6 (7...c5 8.Bc3 Be6 9.e4+/-) 8.e3 Ne5 1-0. DEFFM – GuestXBZD, freechess.org, 2021.

5.c4 Qc5 6.e3 de3 7.de3 Bg4? (better 7...Bd6+=) 8.Ba3+- Qb6 9.Bf8 Kf8 (9...Qa5 10.Ke2 Be6 11.Ne5 h6+-) 10.Qd8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.c4 Qc5 6.e3 de3 7.fe3 Bg4 (7...e4 8.Ne5 Qe7 9.Be2+=) 8.Be2 (8.h3 Be6 9.d4 ed4 10.ed4+-) 8...Bf3? (better 8...Nd7 9.Nc3 Ngf6+/-) 9.Bf3+- (9.gf3?! Nf6+/-) 9...Nf6?? (9...Nd7 10.Bb7 Rb8+-) 10.Bb7 Qb4 (10...Qc4 11.Ba8 Bc5 12.Qb3 Qb3 13.ab3+-) 11.Qc2 c6 (11...a6 12.Ba8 ab5 13.Be5 Qc4 14.Qc4 bc4 15.Bf6 gf6 16.Nc3+-) 12.Ba8 Ne4 (12...cb5 13.cb5 Qc5+-) 13.a3 Qc5 14.Qe4 Be7 15.Be5 0-0 16.0-0 Nd7 17.Bd4 Qg5 18.Bc6 f5 19.Qe6 Kh8 20.Qd7 Rd8 21.Qf5 Qf5 22.Rf5 Rf8 23.Rf8 Bf8 1-0. DEFFM – guesto, freechess.org, 2019.

5.c4 Qe6!? 6.e3 c5+=.

5.c4 Qe6 6.e3 de3 7.de3 (7.Ne5 ef2 8.Kf2 Bc5 9.Ke1 f6 10.Qh5 Kd8-+) 7...Nd7 8.Qc2 Bb4 9.Nbd2 Ngf6 10.Be2 0-0 11.0-0 e4 (11...Bd6!?=) 12.Ng5+/- Qe8 (12...Qf5!? 13.Nge4 Ne4 14.Ne4 Re8+/-) 13.Nde4+- h6 (better 13...Ne4 14.Ne4 Qe7+-) 14.Nf6 Nf6 15.Bf6 gf6 (15...hg5 16.Bg7! Kg7 17.Qb2 f6 18.Qb4 Rh8+-) 16.Qh7 1-0. DEFFM – hatop, freechess.org, 2021.

5.e3 a6 6.ed4+/- ab5 7.Nc3 Qe6 8.d5 Qe7 9.Nb5 Qb4?? (better 9...e4 10.Ne5 Nh6+/-) 10.Nc7+- Kd8 11.Be5 Ra5 12.c4 Nd7 (12...Qe7 13.Be2 Bg4 14.d6+-) 13.Bc3 Qe7 14.Be2 (14.Ne6 fe6 15.Ba5 b6+-) 14...Rc5 (14...Ra3 15.Nb5 Ra6 16.0-0+-) 15.Nb5 (15.Bb4 Kc7 16.d4 Qf6 17.dc5 Bc5+-) 15...Rc4 16.0-0 Rg4 (16...Rc5 17.Bb4 Qf6 18.Bc5 Nc5 19.d4+-) 17.d6 Qe6 18.Nfd4 Rg2 (18...Rd4 19.Bd4 Ngf6+-) 19.Kg2 Qg6 20.Kh1 Bd6 (20...Ne5 21.Ba5 b6 22.Bb6 Kd7 23.Rc1 Bd6 24.Nd6 Bb7 25.Nb7 Qb6 26.Qa4 Ke7 27.Qa3 Kf6 28.Rc6 Qc6 29.Nc6+-) 21.Bh5 (21.Rg1 Qh6 22.Nd6 Qd6+-) 21...Qe4 22.Bf3 Qg6 (22...Qf4 23.Ba5 b6 24.Nc6 Ke8 25.Nd6 Qd6 26.Bb4+-) 23.Ba5 b6 24.Nc6 Ke8 25.Re1 Kf8 26.Qe2 Qe6 27.Nd6 Qe2 28.Re2 ba5 29.Re8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 c5 6.c4 Qe4 (6...Qe6 7.Bd3=) 7.d3 Qf5 8.Be2 g5 (8...Nf6 9.0-0=) 9.0-0 f6 10.Nfd2 Ne7 (better 10...a6!?+=) 11.Ne4+- Ng6?? (better 11...Ng8 12.Ba3 g4+-) 12.Bg4!! Qg4 13.Nf6 Kf7 (13...Ke7 14.Ng4 (14.Qg4?! Bg4 15.Ng4 h5=) 14...h5 15.Ne5 Ne5 16.ed4+-) 14.Ng4 (14.Qg4?! Bg4 15.Ng4 h5 16.ed4 hg4 17.de5 Ke6=+) 14...h5 (14...Nd7 15.f3+-) 15.Qf3 Kg7 16.Qf6 Kh7 17.Qf7 (better 17.Ne5 Ne5 18.Qe5 Rg8+-) 17...Bg7 18.Nf6 Kh6 Black prepares the advance g4 19.Nh5! Kh5 (19...Bf8 20.Nf6 Bg7 21.Ne4+-) 20.Qg7 Bf5 21.e4 Be6 22.f3 g4 23.fg4 Bg4 (23...Kg4 24.Qg6 Kh4 25.g3 Kh3 26.Qe6) 24.Rf6 Nd7 (24...Bf5 25.Rf5 Kh4 26.Qf6 Kg4 27.Qg5) 25.Rg6 (25.Qg6 Kh4 26.Bc1 Rh5 27.Bd2 Rf5 28.Be1 Rf2 29.Bf2) 25...Rag8 26.Rg5 Kh4 27.Rg4 Kh5 28.Rg5 Kh4 29.g3 Kh3 30.Qd7 1-0. onur604 (2320) - wow1972 (2210), Casual Rapid game, lichess.org, 2021.

5.e3 c5 6.ed4 cd4 (6...ed4 7.Na3 Bd6 8.Bc4 Qe4 9.Kf1+/-) 7.Bd3 (7.Qe2 Bc5 8.c4 Qd6 9.Qe5 Qe5 10.Ne5 Nf6+/-) 7...Be7 (7...Bg4 8.Qe2 Bf3 9.gf3+=) 8.Qe2+/- Nf6 (8...Nd7!?+/-) 9.Bc4+- Qd6 (9...Qe4 10.Bf7! (10.Ne5?! Qg2 11.Qf3 Qf3 12.Nf3 a6+=) 10...Kf8 11.Qe4 Ne4 12.Ne5+-) 10.Ne5 0-0? (better 10...Be6 11.Be6 Qe6 12.Bd4 0-0+-) 11.Nf7 Rf7 12.Ba3 (12.Ba3 Qc7 13.Be7+-) 1-0. DEFFM – GuestMDFZ, freechess.org, 2020.

5.e3 c6 6.ed4+- cb5? (6...ed4 7.Bd4 Bg4+-) 7.Nc3 Qd7 (7...Qd6 8.Bb5 Nc6 9.Ne5 a6 10.Bc6 bc6+-) 8.Bb5 Nc6 9.Ne5 Qe6 (9...Qd6 10.Qe2 Be7 11.d5+-) 10.0-0 Nge7 (10...Qh6 11.Re1 Nge7 12.d5+-) 11.Bc4 Qf6 (11...Qf5 12.Nf7 Qg4 13.Nh8 Qd1 14.Nd1+-) 12.Ne4 Qf5 (12...Qf4 13.Nd6 Kd8+-) 13.Nd6 (13.Nd6 Kd8 14.Nef7 Kc7 15.Nf5 Nf5 16.Nh8+-) 1-0. DEFFM – GuestSRVN, freechess.org, 2020.

5.e3 Bd7 6.ed4 Bb5?? (better 6...ed4 7.Qe2 Be7 8.Bd4 Nf6+-) 7.Nc3 Qc6 (7...Qd8 8.Bb5 c6+-) 8.Bb5 1-0. DEFFM – GuestWHBV, freechess.org, 2019.

5.e3 Qd8 6.Ne5+– Bf5? (better 6...de3 7.fe3 Qh4 8.g3 Qe4+–) 7.Bc4+– Be6? (7...Nh6 8.Bd4 Nd7+–) 8.Be6 (8.Bd4?! Bc4 9.Nc4 Qg5+–) 8...fe6 9.Qh5 (9.Bd4?! Nf6+–; 9.ed4?! Nf6+–) 9...g6 10.Ng6! Nf6 (10...hg6 A pinning theme 11.Qh8) 11.Qh3 de3 (11...hg6 12.Qh8 Nbd7+–) 12.Qe6 Be7 13.Nh8 ed2 (13...ef2 14.Kf1 Qd5 15.Qc8 (15.Bf6?? Qe6 16.Nc3 Bf6–+) 15...Qd8 16.Qb7+–) 14.Nd2 Nd5 (14...Qd5 15.Qc8 Qd8 16.Qb7+–) 15.Qf7 (15.Ne4!? Qd7 16.Qf7 Kd8 17.Qg8 Bf8+–) 15...Kd7 16.Qf5 Ke8 17.0-0-0 (17.0-0-0 c6 18.c4+–) 1–0. DEFFM – GuestNNPY, freechess.org, 2020.

5.e3 e4 6.Nd4 Bc5? 7.Ne6!+– Qe6 (7...Be6 8.Bg7 Combination; 7...Qe6 8.Bg7 Combination; 7...fe6 8.Bg7 Combination) 8.Bg7 Ne7 (8...Qg6 9.Bh8 Nf6 10.d4+–) 9.Bh8 Bd7 (9...Qg6 10.Nc3+–) 10.Qh5 Nbc6 (10...Qf5 11.Qf5 Bf5+–) 11.Qc5 0-0-0 1–0. GuestFFHS – GuestCTTZ, freechess.org, 2020.

5.e3 e4 6.Nd4+/– Nd7 7.c4 Qc5 8.Nc3 Ne5 (better is 8...Ngf6!?+/–) 9.Ne4+– Qb6 10.Qc2 Bc5?? (10...Nd7+–) 11.Nb3 f6 (11...Be3 12.de3 f6 13.Ng5+–) 12.Nec5 Be6 (12...Ng6 13.d4+–) 13.Ne6 Qe6 14.d4 (14.Qe4 Qe7 15.Qb7 Rd8+–) 14...Ng4 (14...Nd7 15.c5+–) 15.h3 Ne3 16.fe3 Qe3 17.Qe2 Qe2 18.Be2 0-0-0 19.Kf2 Kb8 (19...Ne7 20.Nc5+–) 20.a4 c5 (20...Ne7 21.Bf3+–) 21.Nc5 Nh6 22.Ne6 Rc8 (22...Rd7 23.d5+–) 23.Ng7 Nf7 24.Bg4 (24.Bc1!? Ka8+–) 24...Rc7 (24...Rc4 25.Rhc1 Nd6 26.d5+–) 25.Bc1 (better is 25.c5 Ng5 26.Nf5 h5+–) 25...Ng5 (25...Rc4 26.Bf4 Ka8 27.Ne6+–) 26.Bf4 Ne4 27.Ke3 Ka8 28.Bc7 Nc3 29.Kd3 Rg8 30.Rhe1 a6 31.Re8 Re8 32.Ne8 Ka7 33.b6 Ka8 34.Bc8 (34.Nf6 Ne2 35.Re1 Nc1 36.Kc3 Ne2 37.Re2 h6 38.Re8) 34...h5 (34...Nb5 35.ab5 f5 36.ba6 ba6 37.Ra6) 35.Nd6 f5 (35...Na4 36.Bb7) 36.c5 (36.Bb7) 36...Nd5 (36...Na4 37.Bb7) 37.Bb7 1–0. Clay56 – MARYMARY, ChessWorld.net, 2011.

5.e4 Qd6 (better is 5...Qe4!? 6.Qe2 Qe2 7.Be2 Bd6–/+) 6.Na3 Qf6 7.Nc4 Bd6 8.c3 Bg4 (8...dc3!? 9.Bc3 Nd7+/–) 9.cd4+– Bf3 (9...ed4!? 10.Bd4 Qg6+–) 10.Qf3 (10.gf3?! ed4 11.e5 Qe6 12.Bd4 Nh6+/–) 10...Qf3 11.gf3 ed4 12.Bd4 Bf8 13.Na5 b6 14.Nb7 Ne7 (14...c5 15.Nd6! Ke7 16.Nf5 Kd8+–) 15.Rc1 c5 16.Nd6 Kd7 17.Nf7 Rg8 18.Be5 Ng6 (18...g5 19.Bc4 a6 20.Rc3+–) 19.Bc4 Ne5 (19...Ke8+–) 20.Ne5 Kd6 21.Bg8 Ke5 22.Bd5 a6 (22...Nc6 23.bc6 g6 24.Rg1+–) 23.Ba8 ab5 24.Rg1 c4 (24...Na6 25.Rg5 Kf6 26.Rf5 Ke7 27.Bd5+–) 25.Rg5 Kf4 (25...Ke6 26.Rb5 Bc5 27.Rc4 Nd7+–) 26.Rf5 1–0. Janek – Abo, internet, 2016.

5.e3 Bc5

6.Na3 A) 6...Nh6 A1) 7.Nc4 Nd7 (7...f6 8.ed4 ed4 9.Bd3 0-0 10.Qe2 Qd8 11.0-0 Re8 12.Qd1 a6) 8.ed4 ed4 9.Qe2 Kd8 10.Qd3 Re8 11.Be2 Nb6 12.Nb6 ab6; A2) 7.c3 0-0 (7...Nf5 8.cd4 ed4 9.Bc4 Qd6 10.Nc2 de3 11.Ne3 0-0 12.0-0 Be6) 8.cd4 ed4 9.Nd4 Bd4 10.Bd4 Nf5 11.Bb2 Nd6 12.Qf3 Be6; B) 6...Nd7 7.Bc4 (7.ed4 ed4 8.Bd3 Ne7 9.0-0 0-0 10.Re1 Nb6 11.Qc1 Re8 12.Re4 Bd7) 7...Qd6 8.Ng5 Nh6 9.Ne4 Qe7 10.Nc5 Nc5 11.0-0 Na4 12.Bc1 de3.

6.a4 Bg4 7.h3 Bf3 8.Qf3 e4? (better 8...Nf6=) 9.Qg4+- g6? (better 9...Ne7 10.Qg7 Rg8 11.Qh7 Nd7+-) 10.Qc8 Ke7 (10...Qd8 11.Qb7 Nd7 12.Qe4 Ne7 13.ed4+-) 11.ed4 (better 11.c4 Qd8 12.Qb7+-) 11...Bb6 (11...Bd4 12.c4 Qe5+-) 12.Nc3 Qd7 (12...Qd8 13.Qb7 Nd7 14.a5+-) 13.Ba3 (13.Qb7!? Nf6 14.Qa8 Rd8 15.Ne4 Qe6+-) 13...c5 (13...Kf6 14.Qb7 Kg7 15.Qa8 Nf6+-) 14.bc6 (14.bc6 Ke6 15.cd7 Nd7 16.Qa8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.c4 Qd6!?=.

6.c4 Qe6 7.Bd3 e4? (better 7...Nf6!? 8.0-0 0-0+=) 8.Ng5+- Qg6 9.Ne4 Qg2 10.Ng3 (10.Nc5 Qh1 11.Bf1 Nf6-+) 10...Nf6?? (better 10...Qh3 11.Qh5 Bb6 12.Qe5 Ne7 13.ed4 Qe6+-) 11.Bf1 Qh1 12.Nh1 de3 13.de3 Be6 (13...Nbd7 14.Ng3 0-0 15.Nc3+-) 14.Bf6 gf6 15.Qf3 c6 16.Ng3 Bd7 (16...Nd7 17.bc6 bc6+-) 17.Qf6 Rf8 (17...Rg8 18.Qe5 Be7 19.Qc7+-) 18.Nf5 cb5 (18...Bf5 19.Qf5 Bb4 20.Nd2 Bd2 21.Kd2 Nd7+-) 19.Ng7 1-0. DEFFM – GuestQSLV, freechess.org, 2019.

6.ed4 ed4 7.Bd3 (7.Na3 Nf6 (7...Ne7 8.Bd3 0-0 9.0-0 Bf5 10.Re1 Nd7 11.Qe2 Nb6 12.Nc4 Bd3; 7...Nh6 8.Bd3 0-0 9.0-0 Bf5 10.Qe2 Nd7 11.Rfe1 Nb6 12.Nc4 Na4) 8.Bc4 Qe4 9.Qe2 0-0 10.0-0 Qe2 11.Be2 Rd8 12.Nc4 a6) 7...g6 (7...Nf6!? 8.Qe2 Kd8+= 9.Bc4 Qh5 10.0-0 Bg4 11.Re1 Re8 12.Qd3 Bf3; 7...Be6 8.Qe2 Nf6 9.c3 dc3 10.Nc3 Qh5 11.Ne4 Nbd7 12.Neg5 0-0; 7...Ne7 8.0-0 0-0 9.Re1 Nd7 10.Na3 Nb6 11.Qc1 Ng6 12.c3 Nf4; 7...Nd7 8.Qe2 Ne7 9.c3 dc3 10.Nc3 Qe6 11.Ne4 f5 12.Neg5 Qe2; 7...a6 8.0-0 ab5 9.c3 Nc6 10.Bb5 Nge7 11.cd4 Bb4 12.Bd3 Ra2) 8.c3 dc3 (8...Qe6 9.Qe2 Nf6 10.cd4 Qe2 11.Ke2 Bd6 12.Ne5 Be6) 9.Qe2 Be6?? (better is 9...Qe6 10.Nc3 (10.Qe6 Be6 11.Nc3 Nd7 12.Ne4 f6) 10...Nf6+– 11.Qe6 fe6 12.Na4 Be7) 10.Nc3 Qd6 (10...Qh5 11.Ne4 Nd7 12.Bh8+–) 11.Ne4 Qe7 12.Nc5 Qc5 13.Rc1 (13.Rc1 Qd6 14.Be5+–) 1–0. Anonymous – nozeph, internet, 2011.

6.ed4 Bd4 7.Nd4 (7.Nc3 Bc3 8.Bc3 Nd7+/-) 7...ed4 8.c4 (8.Qf3 Qf3 9.gf3 c5+/-) 8...Qe5 (8...Qd6 9.c5 Qc5 10.Bd3 Qe7 11.Be2=) 9.Qe2+/- f6? (better 9...Qe2!? 10.Be2 c5+/-) 10.Bd4+- Qe2 11.Be2 Ne7 12.Bh5 (12.0-0 Kf7+-) 12...Kf8 (better 12...Kd8!?+/-) 13.0-0+- c6? (13...Nd7+-) 14.Bc5 g6 (14...Nd7 15.Bd6 Ne5 16.Re1+-) 15.Re1 gh5 (15...Kg8 16.Re7 (16.Be7?! Kf7+-) 16...gh5 17.Nc3+-) 16.Re7 (16.Be7?! Kf7 17.Nc3 Be6+/-) 16...Bf5 (16...Kg8 17.Nc3 Bf5 18.Rb7+-) 17.Rb7 Kg8 18.Ba7 Nd7 19.bc6 Ne5 20.c7 (20.Bd4 Nc6 21.Bf6 h6 22.Bh8 Kh8+-) 20...Be4 (20...Rc8 21.Na3 Be4 22.Rb8+-) 21.Rb8 Kf7 (21...Kg7 22.Rh8 Rh8 23.Nc3+-) 22.Nc3 Bc6 (22...Bd3 23.Nb5 Ke7 24.Ra8 Ra8 25.Bb8+-) 23.d4 (better 23.Rab1 Rc8 24.Ra8 Ba8 25.Rb8 Rc7 26.Ra8 Nc4 27.d4+-) 23...Nd7 (23...Nc4 24.Rab1 Re8+-) 24.Rh8 Rh8 25.Nb5 Bb5 26.cb5 Ke6 27.b6 Kd6 (27...Nb6 28.Re1 Kd7 29.Bb6+-) 28.Rc1 Ra8 (28...Nb6 29.Bb6 Rc8+-) 29.b7 Ra7 (29...Rh8 30.c8Q Ke6 31.Qh8 h4 32.b8Q Kf5 33.Qh7 Kg5 34.f4 Kg4 35.Qg6) 30.b8Q Nb8 (30...Ra6 31.c8N Kd5 32.Qb7 Kd4 33.Qd7 Ke5 34.Rc5 Ke4 35.Rc4 Ke5 36.f4) 31.cb8Q (31.cb8Q Ke6 32.Rc6 Kf5 33.Qa7 Kf4 34.Qh7 Kg5 35.Rc5 f5 36.Rf5 Kg4 37.Qh5) 1-0. DEFFM – GuestZLLH, freechess.org, 2020.

6.Qe2 Bg4 7.ed4 Bf3 8.gf3 Bd4 9.c3 Bc5 10.c4 Qe6 11.Be5 f6 12.Bc7 Qe2 13.Ke2 Bd4 14.Nc3 Bc3 15.dc3 Nd7 16.Bh3 Rc8 17.Bd6 Rc4 18.Rhg1 g5 19.Be6 Rc3 20.Rac1 Rc1?? (20...Nf8 21.Bf8 Rc1 22.Rc1 Kf8+–) 21.Rc1 Ne7 22.Rc7 1–0. pcmvr (2850) – miodrag (2050), net–chess.com, 2011.

5.e3 de3!?

6.de3 Qd1 (6...Qd1 7.Kd1 f6=). Taulien,Christian (2110) – Baer,Cy (1895), remoteschach.de, 2007.

6.fe3 Bg4 7.Be2 Bf3 8.Nc3?? (8.Bf3 Qb5 9.Nc3+=) 8…Be2-/+. DEFFM – GuestNCFJ, freechess.org, 2019.

6.Be5 ef2 7.Kf2 Nh6=.

6.fe3 e4

7.Ne5 Bd6?? 8.Bc4+- Qc5 (8...Be5 9.Bd5 Bb2 10.Nc3 Ba1 11.Qa1+-) 9.Bf7 (better 9.Bd4!? Qe5 10.Be5 Be5+-) 9...Ke7 10.Bd4 Qb4 (10...Qe5 11.Be5 Be5 12.Bg8 Ba1+-) 11.Nc3 Be5 (11...Nf6 12.a3 Qc3 13.Bc3 Be5 14.Be5 Kf7 15.Bf6 gf6 16.Qh5 Kg7+-) 12.Nd5 Kf7 (12...Kf8 13.Nb4 Nf6 14.Bc4+-) 13.Qh5 g6 14.Qe5 (14.Nb4?! gh5 15.Be5 a5 16.0-0 Ke6 17.Bh8 ab4+/-) 14...Qd6 15.0-0 Nf6 16.Rf6 Kg7 17.Rd6 Kh6 18.Qf4 Kh5 19.Nf6 1-0. DEFFM – GuestJHVN, freechess.org, 2019.

7.Ne5 Be6 8.Bd4 Nf6+/-.

7.Ne5 Nf6 8.Bc4+/– Qc5 9.Bf7 Ke7?? (better is 9...Kd8 10.Bc4 Bd7+–) 10.Ba3 Qa3 11.Na3 g5 (11...Bg4 12.Ng4 Kf7 13.Nf6 gf6 14.Qh5 Kg7 15.Qg4 Kf7 16.Nc4+–) 12.Qb1 (12.0-0 Nbd7 13.Nac4 Ne5 14.Ne5 Nd7 15.Nd7 Bd7+–) 12...a5 (12...Nbd7 13.Qb4 Kd8 14.Qd4+–) 13.Qb2 c5 (13...Bg7 14.Qc3+–) 14.Qc3 b6 (14...Nbd7 15.0-0 Bg7 16.Nac4 Ne5 17.Ne5+–) 15.0-0 Bd7 (15...Bg7 16.Nac4 Nfd7+–) 16.Ng6! hg6 17.Qf6 1–0. Taulien,Hans_Juergen – Orion,Martin, remoteschach.de, 2002.

7.Ne5 Nf6 8.Bc4+/– Bg4?? 9.Bd5 (9.Ng4?! Qc4 10.Bf6 gf6 11.Nf6 Ke7+–) 9...Bd1 10.Bf7 (10.Bb7!? Bc2 11.Ba8 a6+–) 10...Kd8 11.Kd1 Bd6 12.Nc4 Ng4 (12...Nbd7 13.Nd6 cd6 14.Rf1+–) 13.Nd6 Nf2 (13...cd6 14.Bg7 Nf2 15.Ke2 Nh1 16.Bh8+–) 14.Ke2 Nh1 15.Nb7 Ke7 16.Bd5 c6 (16...a6 17.Bg7 Rc8 18.Nc3 ab5 19.Rh1+–) 17.bc6 Rf8 (17...Rc8 18.Ba3 Kf6 19.Nc3 Nc6 20.Rh1+–) 18.Ba3 (18.Ba3 Ke8 19.Bf8 Kf8 20.Nc3+–) 1–0. onur604 (2220) – eloyof (1905), lichess.org, 2020.

7.Ne5 Nf6 8.Bc4+/– Bg4?? 9.Qg4 Ng4 10.Bd5 Ne5 11.Bb7 Nc4 12.Bd4 Bb4 (12...Nd6 13.Ba8 Nb5 14.Be4 Nd4 15.ed4+-) 13.Ba8 0-0 14.Be4 Rd8 15.Bd3 Nd6 (15...Nb6 16.a3 Bd6 17.Be4+-) 16.Ba7 Ne4 (16...Nd7+-) 17.Be4 Rd3 18.Bd3 (18.Bd3 Nd7 19.a4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Bg4

6.ed4 ed4 7.Be2 Nf6 (7...Bc5 8.0-0 Nf6 9.h3+=) 8.0-0 (8.c4!? Qe4 9.d3 Bb4 10.Nbd2+/-) 8...Bc5+= 9.c4 (better 9.h3 Be6 10.d3+=) 9...dc3? (better 9...Qd6!? 10.h3 Be6=) 10.Nc3+/- Qd7 (10...Qd6!? 11.d4 Ba3 12.Ba3 Qa3+/-) 11.Ne5+- Be2 12.Nd7 (12.Ne2 Qb5 13.Rb1 Nbd7+/-) 12...Bd1 13.Nc5 Bh5 14.Rfe1 Kf8?? (better 14...Kd8+-) 15.Ba3 Kg8 16.Nd5 Nbd7 (16...b6 17.Nc7 bc5 18.Na8 Nbd7+-) 17.Ne7 Kf8 18.Nd7 Nd7 19.Nc8 Kg8 (19...c5 20.bc6 Nc5 21.Bc5 Kg8 22.Re8) 20.Re8 Nf8 21.Rf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.ed4 e4 7.Nc3 Qe6 8.d5 Qe7 9.d6 cd6 10.Nd5 Qd7 11.Qe2 f5 12.h3 (12.d3 Bf3 13.gf3 e3+–) 12...Bh5 13.d3 Ne7 (13...Bf3 14.gf3 Ne7 15.fe4 Nd5 16.ed5 Kd8 17.c4+–) 14.de4 fe4 15.Qe4 Bg6 16.Qe3 Rg8? 17.b6 Na6 (17...ab6 18.Nb6 Qf5 19.Na8 Qa5 20.Kd1 Qa8+–) 18.Ba6 ba6 19.Nc7 Kd8 20.Na8 Nf5 (20...Qc8 21.Nc7 ab6 22.Ne6 Kd7+–) 21.Qb3 Bf7 (21...d5 22.b7 Bd6 23.0-0-0+–) 22.b7 Qe7 (22...Bb3 23.b8Q Qc8 24.Qb3 Ne7+–) 23.Ne5! de5 (23...Qe5 24.Be5) 24.b8Q Kd7 25.Q3b7 Ke6 26.Qe5 1–0. ilmarinens (2285) – grahamtrue (2060), net–chess.com, 2007.

6.ed4 Bf3 7.Nc3 Bd1 8.Nd5 Bc2? 9.Nc7 Kd7 (9...Kd8 10.Na8 b6 11.f3+– (11.de5?! Be4+–)) 10.Na8 e4 (10...ed4 11.Bd4 Nf6 12.Rc1+–) 11.Rc1 Bd3 12.Rc7 Kd6 (12...Kd8+–) 13.Ba3 Kd5 (13...Ke6 14.Bf8 Nf6 15.Bg7+–) 14.Bf8 Nf6 15.Bg7 Re8 (15...Rg8 16.Bf6 Bf1 17.Rf1+–) 16.Bf6 Bf1 17.Rc5 (better 17.Rb7 Bb5 18.Rb5 Kc6 19.Rc5 Kb7+–) 17...Ke6 (17...Kd6 18.Kf1 Nd7 19.Rd5 Kd5 20.Nc7 Kd6 21.Ne8 Ke6 22.Bg5+–) 18.Nc7 Kf6 19.Ne8 Ke7 20.Re5 Kd7 1–0. DEFFM – guestKily, freechess.org, 2020.

6.ed4 Bf3 7.Nc3+/– Bd1? 8.Nd5+– Kd8 9.Rd1 ed4 10.Bd4 f6 (10...c6 11.Ne3+–) 11.Bc4 (11.Nf4 Nh6+–) 11...c6 (11...Bd6 12.Ke2+–) 12.Nf4 cb5 (12...Ne7 13.Rb1+–) 13.Ne6 Ke8? (13...Kc8 14.Bb5 Nh6+–) 14.Bb5 Ke7 15.Nc7 (15.Nf8?! Kf8 16.Bc5 Kf7+–) 15...a6 16.Bc5 Kd8 17.Ne6 Kc8 18.Bf8 (18.Nf8 ab5 19.a3 Nh6+=) 18...ab5 (18...g6 19.Bc4 h5 20.Nf4+–) 19.Bg7 Ne7 (19...Kd7 20.Nc5 Kc6 21.d4+–) 20.Bh8 Ra4 (20...Ra2 21.Ke2+–) 21.0-0 1–0. DEFFM – GuestKCDQ, freechess.org, 2018.

6.ed4 Bf3 7.Nc3 Qd4 8.Qf3 (worse is 8.gf3 Nd7+=) 8...c6 9.bc6 (9.Bd3 Nf6+=) 9...Nc6+= 10.Bb5 0-0-0?? (better is 10...Nge7+=) 11.Bc6+– Qd2 12.Kf1 bc6 (12...Qc2 13.Bb7 Kb8+–) 13.Qc6 Kb8 14.Nb5 Rd7 15.Be5 Bd6 16.Qd7 (16.Bd6 Qd6 17.Nd6 a5 18.Rb1 Ka7 19.Nc8) 16...Be5+– 17.Qa7 (17.Qd2 g6 18.Qd8 Kb7 19.Rb1 Ka6 20.Nc7 Ka5 21.Qb8 Bc7 22.Qa7) 17...Kc8 18.Qc5 Kd8 (18...Kd7 19.Qe5 Nf6 20.Qc7 Ke6 21.Re1 Qe1 22.Ke1+–) 19.Qe5 Qc2 20.Qd5 Kc8 (20...Ke8 21.Re1 Ne7 22.Qa8 Kd7 23.Qb7 Kd8 24.Qe7 Kc8 25.Nd6 Kb8 26.Qb7) 21.Qa8 (21.Re1 Qc4 22.Qc4 Kb7 23.Nd6 Ka7 24.Qc6 Nf6 25.Qb7) 21...Kd7+– 22.Qd5 Ke7?? (22...Kc8 23.Re1 Qc4 24.Qc4 Kb7 25.Nd6 Ka7 26.Qc6 Nf6 27.Qb7) 23.Qd6 Ke8 24.Re1 (24.Re1 Qe2 25.Re2 Ne7 26.Qe7) 1–0. DEFFM – GuestZPTZ, freechess.org, 2018.

6.Be2 Bf3 7.gf3 Nf6 8.Rg1= Nbd7 9.Na3 (9.f4 de3 10.de3 Qd1 11.Kd1 ef4 12.ef4 Rg8=+) 9...Ba3 (9...Nb6 10.c4 Qd7 11.Rg5–/+) 10.Ba3= b6 (10...Rg8!?=) 11.Rg7+= 0-0-0 12.Be7 (12.c4 Qe6+=) 12...Rde8 (12...Rdg8 13.Rg3=) 13.Bf6+= Nf6 14.e4 (14.e4 Qd7 15.Qc1=). GuestQKHN – GuestWNYC, freechess.org, 2020.

4.Nf3 Qd6

5.e3 c5 6.bc6 Nc6 7.Bb5 Bg4 8.h3 Bh5 9.g4 Bg6 10.ed4 e4 11.Ne5 0-0-0 (11...Nge7 12.Na3+=) 12.Bc6+/- (12.Ng6?! Qg6 13.c3 a6=) 12...bc6 13.Qe2 Ne7 14.Qa6 Kb8 15.Ba3 Qd4 16.Nc3 Qe5?? (16...Qd2 17.Kf1 Ka8 18.Be7 Qc3 19.Rb1 Qh3 20.Rh3 Rd1 21.Rd1 Be7 22.Qc6 Kb8 23.Nd7) 17.Rb1 Kc7 (17...Qb5 18.Nb5 Rd7 19.Na7 Ka8 20.Nc6 Ra7 21.Qa7) 18.Qb7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 de3 6.Be5 ed2 7.Nbd2+/- Qe6 (7...Qe7!? 8.Qe2 Be6+/-) 8.Bc4+- Qe7 9.0-0 Nd7 (9...Be6 10.Re1 Nd7 11.Bc7+-) 10.Re1 (10.Re1 Nc5 11.Bg7 Bg7 12.Re7 Ne7 13.Rb1+-) 1-0. DEFFM – GuestYLDV, freechess.org, 2021.

4.Nf3 Bd6

5.c3 e4 6.Nd4 c5 (6...Nf6 7.Na3=) 7.bc6+= Nc6 8.Nc6 bc6 9.Qa4 Ne7 10.Qe4 Rb8 11.Qc2 Qb6 12.Bc1 Bf5 (12...Be6!?+/–) 13.e4+– Be6 14.Na3 Qa5 15.Nc4 Bc4 16.Bc4 Qc5 17.d3 f5 18.Be3 Qa5 19.Bd4 Ba3 (19...Be5 20.Be5 Qe5+–) 20.Bg7 Rb2 21.Qd1 Rf8 22.Qh5 Ng6 (22...Kd7 23.0-0 (23.Bf8?! Qc3 24.Kf1 Bc5+–) 23...Rfb8 24.Rae1+–) 23.0-0 Qc7 (23...Kd8 24.Qh7 Ne5 25.Bf8 Bf8 26.Qh8+–) 24.Bf8 Bf8 (24...Kf8 25.ef5 Nf4 26.Qh6 Ke7 27.Rfe1 Kd8 28.Qf6 Qe7 29.Re7 Be7+–) 25.ef5 Qa5 26.Rab1 Qc3 (26...Rb6 27.g4 Bg7 28.Qh7+–) 27.Rb2 Qb2 28.fg6 hg6 29.Qg6 Kd7 30.Qf5 Ke8 31.Re1 Be7 (31...Kd8 32.Qf8 Kc7 33.Re7 Kb6 34.Qb8 Kc5 35.Qb2 a5 36.Rb7 Kd6 37.Qd4) 32.Qc8 1–0. Taulien,Hans_Juergen (2350) – Brandl,Erwin (1850), RSX – Spendenturnier, 2004.

5.c4 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Qb6 9.Qb3 Qb3 10.ab3 Nb4 11.0-0 Nf6 12.Rc1 (worse 12.ed4 e4 13.c5 ef3 14.Bb5 Bd7 15.Bd7 Kd7 16.cd6 fg2 17.Kg2 a6-/+) 12...e4 13.Nd4 Be2 14.Ne2 Nd3 15.Rc2 Ng4 16.Ng3 Nb4 17.Rc3 Bg3 18.fg3 a5 19.Ba3 (19.h3!? Nf6 20.c5=+) 19...Nd3=+ 20.Rc2 f5 21.Nc3 Nf6 (21...Ra6 22.Nd5 Rh6 23.h3+/-) 22.Rca2 h5 23.Bd6 b6 24.Bc7 Ra6 25.Nb5 Kd7 26.Rf1 g6 27.h3 Kc6 28.Bf4 Raa8 29.Rb1 Nh7 (29...Rhd8 30.Nd4 Kd7 31.Bg5=+) 30.Bh6 Nf8 31.Bg7 Rg8 32.Bf6 Ne6 33.Nd4 Nd4 34.ed4 Kd6 35.Bg5 Kd7 36.Rf1 Nb4 37.Ra4 b5 38.cb5 Rgb8 39.b6 Rb6 40.Rc1 Nd3 41.Rc3 Rb4 42.Bf4 Ra6 ½-½. Tiedemann,Joern (1810) - Seiler,Werner (2220), RSS7E adv-28, 2006.

5.c4 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Bc5 9.Nd4+= ed4 10.Bg4 Nf6 11.Bh3 (11.Bf3 0-0+=) 11...0-0= 12.0-0 Re8 13.Na3 a6 14.Nc2 d3 (better 14...Qd6!?=) 15.Ne1+/- Ne4 16.Bf5 Bd6 (16...Qg5 17.Be4 Re4 18.Qb3+/-) 17.Qg4 (17.f3 Nc5 18.f4 Bf8+/-) 17...Nf6 (17...g6 18.Be4 h5 19.Qd1 Re4 20.Rc1+/-) 18.Bf6 (18.Qh3 Be5 19.Rb1 Bb2 20.Rb2 Ne5+=) 18...Qf6 19.Nd3 (19.Rb1 Ne5 20.Qh3 g6 21.Bd3 b5+/-) 19...h5 20.Qh3 (20.Qh5?! g6 21.Bg6 Qg6 22.Qg6 fg6=) 20...Bc7 (20...g6 21.Bd7 Re4 22.f4 Rc4 23.Rac1+/-) 21.Rab1 (21.Qh5 g6 22.Qf3 Qf5 23.Qf5 gf5=+). Taulien,Hans_Juergen (2350) - Stark,Lars (2000), remoteschach.de, 2002.

5.c4 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Qe7 9.Nd4+= ed4 (9...Be2 10.Ne2 Qe6 11.d3+=) 10.Bg4 de3 11.de3 (11.0-0 ef2 12.Rf2 Nh6+/-) 11...Bb4 (11...Nf6 12.Nc3 Be5 13.Bf3+=) 12.Nc3+/- Rd8 13.Qe2 Nf6 14.0-0 Ne5 (14...0-0 15.Bf3 Bc3 16.Bc3+/-) 15.Bf3 (15.Nd5 Nd5 16.cd5 0-0+-) 15...0-0 (15...Nf3 16.Qf3 Rd2 17.Rab1+/-) 16.Rfd1 (16.Nd5 Nd5 17.cd5 Rc8+-) 16...Rc8 The isolani on c4 becomes a target (16...Nf3 17.Qf3 Bc3 18.Bc3+=) 17.Nb5 (17.a3 Bd6 18.Nb5 Nf3 19.Qf3 Bb8+/-) 17...Nf3 18.Qf3 a6 19.Nd4 Rc4 20.Nf5 (better 20.Rac1 Rc1 21.Rc1+= (21.Bc1?! g6=)) 20...Qe4?? (better 20...Qe6+=) 21.Nh6!!+- Kh8 (21...gh6 22.Qf6 Discovered attack (22.Bf6 Deflection)) 22.Qf6!! Qg6 (22...gf6 23.Bf6 Mate attack) 23.Qg6 fg6 (23...hg6 24.Rd7 f6 25.Nf7 Kg8 26.Nd8+-) 24.Rd7 Bc3 25.Rc1 Bb2 26.Rc4 gh6 27.Rb7 (27.Rb7 Be5 28.f4+-) 1-0. Taulien,Hans_Juergen (2350) - Boldt,Alex (1960), remoteschach.de, 2002.

5.c4 c6 6.e3 de3 7.de3 (7.Ne5 ef2 8.Kf2 Qf6 9.Kg1 Be5-/+) 7...Nd7?? (better 7...f6=) 8.Qd6+- Qe7 (8...cb5 9.Ne5 Qa5 10.Nd2 bc4 11.Nec4+-) 9.Be5 Ne5 10.Qe5 Qe5 11.Ne5 Nf6 (11...f6 12.Nf3+-) 12.bc6 b6 13.Nc3 0-0 (13...Ng4 14.Ng4 Bg4 15.Be2 Be2 16.Ke2+-) 14.Nb5 (14.Nd5 Rd8 15.Rd1 Kf8+-) 14...Re8 (14...Be6 15.Bd3+-) 15.Nc7 (15.Nc7 Re5 16.Na8+-) 1-0. Taulien,Hans_Juergen - Debbeler,Adrian, remoteschach.de, 2002.

5.c4 Qf6 6.e3= Bg4 7.Be2 Bc5 (better 7...de3!? 8.fe3 Qe7=) 8.Nd4+/- Be2 9.Ne2 Nd7 10.0-0 Ne7 11.f4 Nf5 (better 11...Qe6!? 12.d4 ed4 13.ed4 Bb4+/-) 12.fe5+- Ne5 13.Ng3 0-0-0 (13...g6 14.Qc2 Ne3 15.de3 Qg5+-) 14.Nf5 (14.Rf5?! Nf3 15.Qf3 Qb2 16.Rc5 Qa1 17.Qf5 Kb8+-) 14...Kb8 (14...Nf3 A) 15.gf3?! Qb2 16.Qb3 Qf6+- (16...Qa1?? 17.Nc3 Qf1 18.Kf1+-); B) 15.Rf3?! Qb2 16.Nc3 Rd2+/-; C) 15.Qf3 Qb2 16.Nc3+-) 15.Qb3 Bb6 (15...Bf8 16.c5!+-) 16.c5! Bc5 17.d4 Bd6 (17...g6 18.de5 Qg5 19.Nd4+-) 18.Nd6 Qe6 (18...Qd6 19.de5 Qe6 20.Rf7 Rd1 21.Qd1 Qf7 22.Qb3+-) 19.Qe6 fe6 20.de5 cd6 21.ed6 Rhg8 (21...Rd7 22.e4+-) 22.Be5 Ka8 (22...Rd7 23.Nd2 h6 24.Nb3+-) 23.Rf7 b6 (23...Rdf8 24.Rc7+-) 24.Na3 h6 25.Rc1 g5 26.Rcc7 White intends d7 26...g4 (26...Rd7 27.Rcd7 Kb8 28.Rb7 Ka8 29.Ra7 Kb8 30.d7 Ka7 31.d8Q) 27.Ra7 Kb8 28.Rfb7 Kc8 29.d7 Rd7 30.Rb8 1-0. pierred (2790) - grahamtrue (2160), net-chess.com, 2016.

5.c4 Nf6 6.e3 c5 7.d3 0-0 8.Nbd2 a6 9.a4 de3 10.fe3 Ng4 11.Qe2 ab5 12.cb5 Be6 13.Ne4 Be7 14.h3 Nf6 15.Kf2 (15.Ne5?? Ne4 16.Qc2 Qa5 17.Ke2 Ng3 18.Kf3 Nh1-+; 15.Be5 Ne4 16.de4 Nd7=+) 15...Ne4 16.de4 Bb3 17.Qd3 Qd3 (worse 17...Ba4 18.Qc4 (worse 18.Be5 Nd7 19.Bf4 Ra5-/+) 18...Qa5 19.Bc3+/- (worse 19.Be5 Nd7=+)) 18.Bd3 Rd8 19.Ne5 Nd7 20.Nd7 Rd7 21.Be2 Rd2 22.Be5 Ra4 23.Ra4 Ba4 24.Kf3 Bb3 25.Ra1 Ra2 26.Ra2 Ba2 27.b6 f6 28.Bc3 Kf7 29.e5 Ke6 30.ef6 Bf6 31.Bf6 gf6 32.Kf4 Kd6 33.Bd3 h6 34.Kf5 c4 35.Be4 c3 36.Bc2 (36.Bb7?? c2 37.Be4 c1Q-+; worse 36.Kf6 Bd5 37.Bc2 Bg2=+) 36...Kc5 37.Ke4 (better 37.Kf6!? Kb4 38.g4=) 37...Kc4 (37...Kb6?! 38.Kd4=+) 38.Bd3 Kb3 39.Kd4 c2 40.Bc2 Kc2 41.Ke4 Bb1 42.Kf5 Kd2 43.Kf6 Ke3 44.Kg7 h5 45.Kh6 h4 46.Kg5 Kd4 (better 46...Be4-+) 47.Kh4 Kc5 0-1. bwall (2000) – aaabb, net-chess.com, 2011.

5.d3 a6 6.Na3? (6.c3!? dc3 7.Nc3=+) 6...f6 (6...Bb4 7.Nd2-+) 7.e4 (7.ba6 Bb4 (7...ba6?! 8.c3=) 8.Nd2 Ra6-/+) 7...Ba3 8.Ba3 ab5 9.Bb4 Nc6 10.Bc5?? (better 10.Qb1-/+) 10...Bd7 (better 10...b6 11.Bd4 ed4-+) 11.g4?? (better 11.Nh4 Be6 12.a4 ba4 13.Be2-+). Milan van Dijk - Axel van Dijk, ChessWorld.net, 2003.

5.d3 b6 6.e4 (6.c3 c5=) 6...Nf6 7.Be2 0-0 8.0-0 Bc5 (8...a6!? 9.a4 ab5 10.ab5 Ra1 11.Ba1 Re8=) 9.Ba3 (better 9.Ne5!? Qe8 10.Nf3 Qb5 11.Bd4 Bd4 12.Nd4+=). Milan van Dijk – xadrez, ChessWorld.net, 2003.

5.d3 Nf6 6.c3=+.

5.e3 a6 6.a4 ab5 (6...Nf6 7.ed4 ed4 8.Bd4=) 7.ab5 (7.ed4 ed4 8.Bd4 Qe7 9.Be2 Nf6 10.ab5 Ra1 11.Ba1 0-0+/-) 7...Ra1= 8.Ba1 Nf6 (8...c5 9.bc6 de3 10.fe3 Nc6 11.Nc3=) 9.ed4+= ed4 10.Bc4 (10.Bd4 0-0+=) 10...0-0 (10...c5 11.0-0 0-0 12.c3=) 11.Bd4 (worse 11.Nd4 Re8 12.Kf1 Be5=+) 11...c6 (11...Re8 12.Be3+=) 12.0-0+= cb5 13.Bb5 Bd7 (13...Nc6!? 14.Bc6 bc6+=) 14.Bd7+/- Nbd7 (14...Nfd7 15.Nc3 Nc6 16.Be3+/-) 15.Nc3 Bb4 (15...Re8 16.Re1+-) 16.Nb5 (16.Qa1 Bc5+-) 16...Ne4 (16...Re8 17.c4+-) 17.c3 (17.Re1 Re8+-) 17...Bc5 18.Re1 Bd4 19.Re4 Bf6 20.d4 Qb6 (20...Nc5 21.Re1 Ne6 22.c4+-) 21.c4 h6 (21...Ra8 22.h3+-) 22.Qe2 Qc6 23.Re8 (23.g3 Nb6 24.d5 Qc8+-) 23...Nb6 24.Rf8 Kf8 25.c5 Nd5 (25...Nc8!?+/-) 26.Nd6+- Nf4 (26...Qa4 27.g3+-) 27.Qa2 Qd7 (27...Ne6 28.Qa8 Ke7 29.Qg8 Nc5 30.Nf5 (30.dc5?! Qc5 31.Nc8 Kd7=) 30...Ke6 31.Ne3+- (31.dc5?! Kf5 32.Qf7 Qc5 33.Qh5 Bg5=)) 28.Qa8 Ke7 29.Qg8 (better 29.Kf1+-) 29...Ne2?? (better 29...Ke6 30.Kh1 Kd5+/-) 30.Kh1 Nd4 (30...Ke6 31.Qa8 Nc3 32.Qa1+-) 31.Qf7 Kd8 32.Qg8 (32.Nb7?! Kc7 33.Qd7 Kd7 34.Nd4 Bd4+=) 32...Kc7 33.Qa8 Qc6 (33...Kc6 34.Nd4 Bd4 35.Qa4 Kc7 36.Qd4 Kb8+-) 34.Qc8 1-0. DEFFM – GuestTMTS, freechess.org, 2019.

5.e3 a6 6.ed4+= ed4 (6...e4 7.Ne5+=) 7.Nd4 Qe7 8.Qe2 Bd7 9.Na3 Nf6 10.Qe7 Be7 11.Be2 c5 12.Nf3 0-0 13.0-0 Ne4 (13...ab5 14.Nb5 (worse is 14.Bb5 Ra3 15.Ba3 Bb5–/+) 14...Re8 15.Nc7+–) 14.Rfe1+/– Nd6 (better is 14...Re8!?+/–) 15.ba6+– Bf6 (15...ba6 16.Ba6 Re8 17.Be2+–) 16.ab7 Ra4 (16...Ra3 17.Ba3 Ba1 18.Bc5 (worse is 18.Ra1 Nb7 19.Rb1 Bc6+–) 18...Nb7 19.Bf8+– (19.Ra1?! Nc5 20.d4 Re8+=)) 17.Bf6 gf6 18.Nb1 Rb4 19.Nc3 Re8 (19...Rb7 20.Nd5+–) 20.Rab1 (better is 20.Nd5 Re2 21.Re2 Rb7+–) 20...Bc6 21.a3 (21.d4 Rb1 22.Rb1 cd4 23.Nd4 Bb7+–) 21...Rb7 22.Rb7 Bb7 23.Kf1 Nd7 24.a4 c4 (24...Ne5 25.a5+–) 25.Nb5 Nb5 26.ab5 Bd5 27.Nd4 Kf8 28.Bf3 Re1 29.Ke1 Bf3 30.Nf3 Ke7 31.c3 (31.d4!? c3+–) 31...Kd6 32.d4 (32.Kd1 Ne5+–) 32...cd3 33.Kd2 Kc5 34.Kd3 Kb5 35.Kd4 Kc6 36.Nh4 Ne5 37.h3 Ng6 (37...Kb5 38.Nf5+–) 38.Ng6 fg6 39.f4 h6 40.g4 Kd6 41.c4 (41.c4 Kc6 42.c5+–) 1–0. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

5.e3 b6 6.Bc4 Nf6 7.ed4 Bg4?? (better 7...e4 8.Ne5 0-0+–) 8.de5+– Be5 (8...0-0 9.ef6 Re8 10.Kf1 gf6 11.Bd5+–) 9.Be5 (better 9.Ne5!? Bd1 10.Bf7 Kf8 11.Ba3 Qd6 12.Kd1 Na6 13.Bd6 cd6 14.ba6 de5+–) 9...0-0 10.0-0 Nbd7 11.Bb2 Nc5 12.d3 Qd6 (12...a6 13.ba6 Re8 14.Nbd2+–) 13.Re1 Nh5 (13...Rfe8 14.Nbd2+–) 14.Nbd2 (14.h3 Be6 15.Ng5 g6 16.Ne6 Ne6+–) 14...Qf4 (14...a6 15.a4 Qg6 16.Ne5 Bd1 17.Ng6 ab5 18.ab5 Ra1 19.Ba1 hg6 20.Rd1+–) 15.Be5 Bf3 (15...Qh6 16.Bc7 Rac8 17.Be5+–) 16.Nf3 Qf5 17.Nd4 Qg6 18.Bc7 Rac8 19.Bg3 (19.Bd6 Rfd8 20.Nc6 Rc6 21.bc6 Qd6 22.Qh5 Ne6+–) 19...Rcd8 (19...Ng3 20.fg3 Rc7 21.Qf3+–) 20.Nc6 Rde8 21.Ne7 Re7 22.Re7 Ng3 23.hg3 Qg5 (23...Qf6 24.Ra7 h6 25.a4+–) 24.Qe1 Ne6 (24...h5 25.Rf7! Rf7 26.Qe8 Kh7 27.Bf7+–) 25.Rf7! Rf7 (25...Kf7 Decoy to f7 26.Qe6 The nicest combinations are those leading to mate) 26.Qe6 Qh5 (26...h6 27.Qf7 Kh7 28.Qg8 Kg6 29.Qe8 Kh7 30.Bg8 Kh8 31.Bf7 Kh7 32.Qg8) 27.Qe8 1–0. guest211 – guest433, chessclub.com, 2020.

5.e3 b6 6.Bc4 h6? 7.ed4 e4 8.Ne5 Be5 9.de5 Be6 (9...Qg5 10.g3+-) 10.Be6 fe6 11.Qh5 g6 (11...Kf8 12.Nc3 Qg5 13.Qg5 hg5 14.Ne4 g4+-) 12.Qg6 Kd7 13.Qe4 c6 14.Nc3 cb5 (14...Ne7+-) 15.Qa8 (15.Qa8 Nc6 16.Qb7 Qc7 17.Qc7 Kc7 18.Nb5 Kd7 19.a4+-) 1-0. DEFFM – GuestHTSB, freechess.org, 2021.

5.e3 b6 6.ed4 e4 7.Ne5 Nf6+-.

5.e3 Nd7 6.ed4 ed4 7.Bc4 (7.Na3 Nc5 8.Nc4 Nf6+=) 7...Nb6 (7...Ne7 8.0-0+=) 8.Bd4+/- Nc4? (better 8...Ne7!? 9.Bb6 ab6+=) 9.Bg7+- Be5? (better 9...Qe7 10.Qe2 Bf5+-) 10.Ne5 (10.Be5?! Ne5 11.Qe2 f6+-) 10...Ne5 11.Bh8 (11.Be5?! f6 12.Qh5 Kf8+-) 11...f6 12.Qh5 Nf7?? (12...Ng6 13.0-0 Qd7+-) 13.0-0 Kf8 (13...Be6 14.Qh7 Nh8 15.Re1+-) 14.Qh7 Nh8 15.Qh8 Bf5 (15...a6 16.Re1 ab5 17.Re3+-) 16.Qh5 Bc2 (16...Ne7 17.d3 a6+-) 17.Qc5 Qe7 (17...Ne7 18.Qc2 a6 19.ba6 Ra6 20.Nc3+-) 18.Qc2 b6 (18...Re8 19.Nc3 Qe6 20.Qa4+-) 19.Nc3 1-0. DEFFM – GuestDZKT, freechess.org, 2019.

5.e3 Nd7 6.ed4 e4 7.Ne5 Be5 (better 7...Nh6!?+=) 8.de5+- Ne7 9.Qg4 Ng6 10.e6 Nf6 (10...Nb6 11.Bg7 Rg8 12.Bb2 Be6 13.Qe4+/-) 11.ef7 Kf7 (11...Kf8 12.Qg5 Be6 13.h4+-) 12.Bc4 Kf8 (better 12...Nd5 13.Qg3 Be6+-) 13.Qg5 Qe7 (13...a6 14.Ba3 Ke8 15.ba6 b6+-) 14.Ba3 1-0. DEFFM – GuestMZVK, freechess.org, 2019.

5.e3 Qe7 6.ed4+= ed4 7.Be2 c5!?+=.

5.e3 Qe7 6.ed4+= ed4 7.Be2 Bc5 8.0-0+/- Qf6 (8...Nf6 9.Nd4 0-0 10.Nb3+/-) 9.Re1 Ne7 10.c3 Bg4 (10...0-0 11.cd4 Bf5 12.Qb3+-) 11.cd4 Bf3 (11...Bd6 12.Nc3 Bf5 13.Ne5+-) 12.Bf3 (12.gf3?! Bd6 13.Ba3 0-0=) 12...Bd4 (12...Nd7 13.Bb7 Rd8 14.dc5 Qb2+-) 13.Bd4 Qd4 14.Qe2 0-0 15.Qe7 (worse 15.Bb7 Ng6 16.Nc3 Nd7 17.Ba8 Ra8+-) 15...Qa1 16.Nc3 (16.Bb7!? Nc6 17.Bc6 Rac8+-) 16...Qb2 17.Bd5 (better 17.Bb7 Qd2 18.Nb1 (18.Ba8?! Qc3 19.Rd1 a6+-) 18...Qa2 19.Ba8+-) 17...Qd2 (17...Nc6 18.bc6 bc6 19.Bc6 Rab8+-) 18.Qf7!! (18.Bb7?! Nd7 19.Ba8 Ra8+=) 18...Rf7 (18...Rf7 19.Re8 Mate attack) 19.Re8 1-0. DEFFM – kallol, freechess.org, 2019.

5.e3 Qe7 6.ed4 ed4 7.Be2 Bg4 8.0-0+/- (8.Bd4?! Bf3 9.gf3 Nf6=) 8...Nf6 9.h3 Bf3 10.Bf3 Nbd7? (better 10...0-0!? 11.Re1 Qd7 12.Bd4 c6 13.Bf6 gf6+-) 11.Re1+- (11.Bd4?! 0-0-0 12.Re1 Ne5+/-) 11...Ne5 12.Bb7 (12.Bd4?! 0-0-0 (12...Nf3?? 13.gf3 0-0 14.Re7 Be7 15.Qe2+-) 13.Re3 Rhe8+/-) 12...Rb8 13.Bc6 Nfd7 (13...Nc6 14.Re7 (14.bc6?! Rb2 15.Re7 Ke7+-) 14...Ke7 15.a4+- (15.bc6?! Rb2 16.Qe2 Kd8+-)) 14.f4 (14.f4 0-0 15.fe5+- (15.Re5?! Ne5 16.fe5 Qe5+/-)) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e4 a6 6.c3= c6 (better is 6...c5!?=) 7.cd4+/– ed4 8.Bd4 cb5?? (better is 8...f6 9.ba6 Na6+/–) 9.Bg7+– Nc6 (9...Nf6 10.Bh8 Ne4 11.Bd3+–) 10.Bh8 Be6 (10...Nf6 11.Nc3+–) 11.a4 1–0. Fritz 11 – pierre, 2009.

5.e4 Nf6 6.c3 Ne4 7.cd4 ed4 8.Bd3=+.

5.e4 Nf6 6.Bc4 Ne4 7.Bd5 c6?? (better is 7...Nf6!? 8.Bc4 0-0–/+) 8.bc6?? (8.Be4 Qb6+–) 8...bc6?? (better is 8...Nc5 9.cb7 Nb7=) 9.Be4+– Bg4 (9...f5 10.Bd3+–) 10.0-0 f5 11.Qe2?? (better is 11.Bd3+–) 11...fe4= 12.Qe4 Bf3 13.Qf3 Qe7 14.Re1 Nd7? (14...Qh4 15.Re4 Qf6 16.Qf6 gf6 17.Bd4+/–) 15.Na3?? (15.Bd4!? Nb8 16.Be5 Be5 17.Qh5 g6 18.Qe5 Qe5 19.Re5 Kf7 20.Nc3+–) 15...Nf6 (better is 15...Rc8=) 16.Qc6+– Nd7?? (16...Kf7 17.Nc4 Rhd8 18.Bd4 Rac8+–) 17.Qa8 Nb8 (17...Bb8 18.Nb5 0-0 19.Ba3+–) 18.Nc4 (better is 18.Bd4 0-0 19.Nc4 Qc7 20.Ne5 Qa5+–) 18...0-0 (18...Qc7 19.Qd5 Be7 20.Ne5+–) 19.Bd4! Qh4 (19...ed4 20.Re7) 20.Qd5 Kh8 21.Qd6 Rd8 22.Qe5 Rg8 23.Qg7! (23...Rg7 24.Re8) 1–0. Taulien,Christian – Orion,Martin, remoteschach.de, 2002.

5.h3 c5 6.a4 (6.bc6 Nc6 7.e3 de3 8.de3 Be6=+) 6...a5 (6...e4 7.Ng1–/+) 7.e4 Be6 8.Na3 Nd7 9.Bc4 Bc4 10.Nc4 Qc7 11.d3 Ne7 12.Nfd2 b6 13.Qg4 0-0 14.Nd6 Qd6 15.Nc4 Qc7 16.Bc1 f5 17.ef5 Nf5 18.Qe4 Kh8 19.Bg5 h6 20.Bh4 (20.g4 Nd6 21.Qc6 Qc6 22.bc6 Nc4 23.cd7 hg5 24.dc4 Rad8–/+) 20...Rae8 21.0-0-0 Re6 22.f3 Nh4 23.Qh4 Nf6 24.Rhe1 Nd5 25.Kb2 Nc3 26.Ra1 Rfe8 27.Qg3 ½–½. Kleist,Werner (1715) – Schmidt,Erich (1745), Hessen–ch Seniors 2nd, 2006.

5.c3 dc3

6.Nc3 a6 7.d4 ab5 (7...ed4!? 8.Qd4 Nf6=) 8.de5+/– (< 8.Nb5 e4 9.Nd2 Nf6=) 8...Bb4 9.Qd8 Kd8 10.0-0-0 Bd7 (10...Ke8 11.Nb5 Ba5 12.e4+/–) 11.Nb5 (11.Ng5 Ke8 12.Nd5 Ba5+–) 11...Ra2 (11...Ne7 12.Ng5 Kc8 13.Nd4+/–) 12.e6! fe6? (better is 12...Rb2 13.Kb2 fe6+/–) 13.Bg7+– Kc8 (13...Ke7 14.Kb1 (14.Bh8?! Bb5 15.Kb1 Ra5+–) 14...Ra6 15.Nbd4+– (15.Bh8?! Bb5 16.e4 Bf1 17.Rhf1 Nd7+–)) 14.Kb1 (14.e4 Nf6 15.Bf6 Rg8+–) 14...Ra5 (14...Ra6 15.Nbd4 (15.Bh8?! Bb5 16.e4 Bf1 17.Rhf1 Nd7+–) 15...Nf6 16.Bf6+–) 15.Nbd4 (15.Bh8?! Bb5 16.e4 Nd7+–) 1–0. pierre – qpkq, internet, 2010.

6.Nc3 Nf6 7.e3 0-0 8.d4 e4 9.Nd2 Bf5 10.Be2 Re8 11.g4 (11.Nc4 Bb4=) 11...Bg6=+ 12.h4 h6 13.g5 Nfd7 (13...hg5 14.hg5 Nh7 15.Rg1+=) 14.Bh5 Bf5 15.gh6 g6 16.Be2 Kh7 17.Qb3 Qf6 18.Nd5 (18.Bc4 Re7+=) 18...Qd8 (18...Qe6+/–) 19.Nc7 Bc7 (19...Qc7 20.Qf7) 20.Qf7 Kh6 21.h5 Qf6?? (21...Nf6 22.hg6 Kg5 23.f4 ef3 24.Nf3 Kg4 25.Ne5 Kg5 26.Rg1 Kh6+–) 22.hg6 Kg5 23.Rh5 1–0. Taulien,Hans_Juergen (2225) – Schollbach,Dieter (1750), remoteschach.de, 2003.

6.Nc3 Nf6 7.e3 Bg4 8.h3 Bh5 9.g4 Bg6 10.Nh4 b6? (better is 10...c6=) 11.g5 Bh5 12.Qc2 Nfd7 (12...Ng8!?+/–) 13.Qe4+– Na6 14.ba6 Nc5 (14...0-0 15.Bd3 g6 16.Qg2+–) 15.Qc6 Nd7 (15...Kf8 16.Nb5 Na4 17.Bc1+–) 16.Nf5 (16.Bb5!? Bg6+–) 16...0-0 17.Rg1 Nc5 18.Nb5 Re8 (18...Bg6 19.Nfd6 cd6 20.Qd6+–) 19.Nfd6 (worse is 19.Nbd6 cd6 20.d4 ed4 21.Bd4 Ne6+–) 19...cd6 20.Nc7 (20.Nd6 Re6 21.Be5 Re5+=; worse is 20.Qd6 e4+–) 20...Rc8 21.Qe8 Qe8 22.Ne8 Re8 23.Bb5 Re7 24.Rc1 Kf8 (24...e4 25.Rc4+–) 25.f4! ef4 26.Rf1 fe3 (26...f3 27.Rf2 Rc7 28.d4+–) 27.d3 (27.d4!? Re6+–) 27...Bg6 (27...Rc7 28.d4 Ne6 29.Rc7 Nc7 30.Be2 Be2 31.Ke2+–) 28.Rc3 d5 (28...e2 29.Rf2 Re3 30.Re2 Re2 31.Ke2+–) 29.d4 Ne4 (29...Kg8 30.Rf4 Rc7 31.dc5 Rc5 32.Re3 f6+–) 30.Rc8 Re8 31.Re8 1–0. pcmvr – grahamtrue (2160), net–chess.com, 2016.

6.Nc3 Nf6 7.e4=.

5.c3 c5

6.bc6 dc3 7.Nc3 Nc6 8.Ne4=.

6.bc6 Nc6 7.cd4+= Qb6 8.Qb3 Qb3 9.ab3+=.

6.bc6 Nc6 7.cd4+= ed4 8.Nd4 Qf6 9.e3 (9.Bc3 Qg6+=) 9...Be5+= 10.Bb5 Bd7 11.0-0 Qh6 (11...Nge7 12.Bc3+=) 12.f4+/– Bd4 13.Bd4 Nf6 (13...Nd4 14.Bd7 Kd7 15.ed4+/–) 14.Bc5 (14.Bf6 Qf6 15.Nc3 Rc8+/–) 14...Qg6 (14...Ne4 15.Qc2 Qg6 16.Ba3+/–) 15.d3 (15.Nc3 a6 16.Be2 Bf5+/–) 15...a6 (15...Qf5 16.Bc6 Bc6 17.Bd4+/–) 16.Ba4 (16.Bc6 Bc6 17.e4+/–) 16...Nd5 (16...b5!? 17.Bb3 Bg4+/–) 17.e4 (17.Qb3 Ne3 18.Be3 b5+–) 17...Nde7 18.d4 b5 (18...Bg4 19.Qd3+–) 19.Bc2 (19.Bb3 Bg4 20.Qd2 Qf6+–) 19...Rc8 20.Nd2 (20.Qd3 0-0+–) 20...Rc7 (20...Bg4 21.Qb1+–) 21.f5 Qg5 (21...Qh6 22.Kh1+–) 22.Nf3 (22.d5 Nd8 23.Bd4 Nb7+–) 22...Qe3 23.Kh1 Na5? (23...Rc8+–) 24.Ne5 1–0. Campos,Eugenio – Paranjpe,Prasad, Vancouver, 1985.

6.bc6 Nc6 7.cd4+= ed4 8.Nd4 Nf6 9.Nc6 bc6 10.Qc2+=.

6.bc6 Nc6 7.cd4 ed4 8.Nd4 Nf6 9.e3 Bd7 10.Be2 0-0 11.0-0 Qc7? (better is 11...Rc8!?+=) 12.Nb5+– Bh2 13.Kh1 Qb8 14.Bf6 gf6 15.g3 Bg3 16.Rg1 Kh8 17.Rg3 Qe5 18.N1c3 (18.d4 Qe7+–) 18...a6 (18...Rg8 19.Qg1 Rg3 20.Qg3+–) 19.d4 Qb8 20.Bd3 f5 21.Rh3 f4 (21...Rg8 22.Rh7 Kh7 23.Qh5 Kg7 24.Rg1 Kf8 25.Qh6 Rg7 26.Qg7 Ke7 27.Nd5 Kd8 28.Qf6 Ne7 29.Qe7 Kc8 30.Nb6) 22.Rh7 (22.Rh7 Kg8 23.Qg1 Bg4 24.Qg4) 1–0. pcmvr – mic (2220), net–chess.com, 2016.

6.cd4 cd4 7.e3 de3 (7...Nf6 8.ed4 e4 9.Ne5=+) 8.de3 (8.Ne5? ef2 9.Kf2 Qf6 10.Qf3 Be5 11.Be5 Qe5–+) 8...Nd7?? (8...Qe7 9.Bd3=) 9.Bc4 (9.Qd6 f6+–) 9...Ngf6?? (9...Qf6 10.0-0+=) 10.0-0 Qe7 11.Nc3 0-0 12.Qb3 b6 13.Ng5 Nc5= 14.Qc2 h6?? 15.Nd5+– Nd5 16.Qh7 (16.Bd5?! Qg5 17.Ba8 Bf5+/–) 1–0. liencam2 – Zhabutti, Live Game Caissa's Web, 2005.

6.e4 Nf6 7.Qc2 0-0 8.Bc4 Bg4 9.Be2 Bc7 10.a4 Bf3 11.Bf3 d3 12.Qb3 a5 13.c4 b6 14.Ra3 Qe7 15.Qd3 Rd8 16.Qc3 Rd4 17.Qc2 Rd6 18.Nc3 Nbd7 19.Nd5 Nd5 20.cd5 Qg5 21.Re3 Rf8 22.g3 Nf6 23.h4 Qh6? (better is 23...Qg6 24.d3 Nd7+/–) 24.Be5+– Rd7 25.Bf6 (better is 25.d6 Bd6 26.Bd6 Rd6 27.e5+–) 25...Qf6+/– 26.Qc3 Be5 27.Qb3 Rfd8 28.Bg4 Rd6 29.f4 Bd4 30.e5 Be5?? 31.fe5+– Qg6 32.ed6 Qg4 33.Re7 Rf8 34.d7 Qd4 35.Re8 Qa1 36.Ke2 (36.Ke2 Qf6 37.d4+–) 1–0. Tiedemann,Joern (2020) – Baer,Cy (1790), RSS7E basic–36, 2011.

5.e3 c5

6.ed4 e4? 7.dc5+- ef3 (7...Be7 8.Bg7 Bf6 9.Bh8 Bh8 10.Nc3 ef3 11.Qf3 Qe7 12.Be2 Qc5 13.0-0+-) 8.cd6 fg2 (8...Nf6 9.Qf3 Qd6+-) 9.Bg2 Qd6 (9...Nf6 10.Qe2 Kf8 11.0-0+-) 10.Bg7 Qg6 11.Qe2 Ne7 12.Rg1 (12.Bh8?! Qg2 13.Qf1 Qe4 14.Kd1 Bf5+-) 12...Be6 (12...Rg8 13.Bc6! Nbc6 14.Rg6 fg6 15.bc6 Rg7+-) 13.Bh8 (13.Bh8 Bd5 14.Kf1 Bg2 15.Rg2+-) 1-0. DEFFM – ukyMESSI, freechess.org, 2019.

6.Be2 b6?? 7.h3 (better 7.Ne5!? Be5 8.Bf3+/-) 7...Be6 8.ed4 cd4 9.c3 Bc5 (better 9...Nd7!?=) 10.Ne5+/- f6? (10...dc3 11.Bc3 Nf6 12.Bf3+/-) 11.Nd3 (11.Bf3 fe5 12.Ba8 Nf6+-) 11...Ne7 (11...a6 12.0-0+-) 12.0-0 (12.Bf3!? Nd7 13.cd4 Bd6 14.Ba8 Qa8+-) 12...0-0 (12...a6 13.Bh5 g6 14.Bf3+-) 13.Re1 Bc8?? (better 13...Bd5+-) 14.Bf3 (worse 14.Nc5 bc5 15.Qb3 Nd5+-) 14...Nd5 (14...dc3 15.dc3 (15.Ba8?! cb2 16.Nb2 Qd4 17.Qb3 Kh8+-) 15...Nbc6 16.bc6+-) 15.Qb3 (worse 15.Nc5 bc5 16.Qb3 Bb7+-) 15...Bb7 16.cd4 Be7 (16...Bd4 17.Bd4 Kh8 18.Nc3+-) 17.Nc3 Kh8 18.Nd5 Bd6 19.N3f4 Re8 (19...Qd7 20.Ba3 f5 21.Ne6+-) 20.Ne6 Qd7 (20...Qc8 21.Rac1 Bc6 22.Qe3+-) 21.Ndc7 Bc7 (21...Bf3 22.Qf3 Bc7 23.Nc7+-) 22.Nc7 Qc7 (22...Nc6 23.Ne8 Na5+-) 23.Re8 1-0. Janek – Mrx, internet, 2019.

6.Be2 Nf6 7.0-0 0-0 8.c3? (better is 8.ed4 cd4 9.Re1+=) 8...Bg4?? (better is 8...d3 9.Bd3 e4 10.Be4 Ne4–+) 9.cd4+= e4 10.Ne5 Be2 11.Qe2 Be5 (11...Qe8!?+=) 12.de5+/– Nd5 13.Qc4 Nb6 14.Qe4 N8d7 15.a4 Qe7 (15...Re8 16.a5 Nc8 17.a6+–) 16.a5 (16.Qb7?! Nc4 17.Bc3 Nce5+–) 16...Nc8 17.Nc3 (worse is 17.Qb7 Rb8 18.Qc6 Ne5 19.Be5 Qe5+–) 17...Qe5 (17...Rb8 18.d4 Qe6+–) 18.Qb7 Rb8 (18...Nd6 19.Qd7 Nc4 20.d4+–) 19.Qd7 Nd6 (19...Qd6 20.Qd6 Nd6 21.Ba3 Nb5 22.Bc5+–) 20.f4 Qf6 21.Qa7 Nb5 22.Qc5 Rfc8 (22...Rfd8 23.Ne4 Qg6 24.f5+–) 23.Qe5 Qa6 (23...Qe5 24.fe5 Na7+–) 24.Nb5 Rb5 (24...f6 25.Qd5 Kh8+–) 25.Qg7 1–0. b4_player – ksew, casual, 2013.

6.bc6 Nc6

7.Bb5 Qb6 8.Na3 Ba3 9.Bc6 bc6 (9...Qc6 10.Ba3 Bg4 11.Ne5 Bd1 12.Nc6 de3 13.Kd1 bc6 14.Re1+/-) 10.Ba3= Qa5 (10...de3!? 11.fe3 e4=) 11.Bd6+= f6 (11...de3 12.Be5 ed2 13.Qd2 Qd2 14.Nd2+=) 12.ed4 ed4 13.0-0 (13.Nd4? Qd5-+) 13...Qd5 14.Re1 Kf7 15.Ba3 Bg4 16.Ne5 fe5 17.Qg4 Nf6 18.Qg3 Rhe8 19.Rab1 c5 (19...Rab8 20.c4 dc3 21.Qc3 Rb1 22.Rb1=) 20.c4 dc3 (20...Qc4 21.Re5 Deflection) 21.dc3 Rad8 22.Qe3 Attacking the isolated pawn on c5 22...Nd7 (22...Kg8 23.Bc5 Ng4 24.Qe4 Qc5 25.Qg4 Qc3 26.Qa4+=) 23.Qe2 Kg8 24.Red1 Qc6 25.Qc4 Kh8 26.Qd5 Qd5 (26...Qc8 27.Qb7 Nf6 28.Qa7+=) 27.Rd5+/- Nb6 28.Rd8 Rd8 29.Bc5 1-0. onur604 (2320) - Demonique (2210), Casual Rapid game, lichess.org, 2021.

7.Bb5 de3 8.Bc6 bc6 9.de3 Qe7 (9...f6 10.Nbd2=) 10.Nbd2 Rb8 (10...Ba6 11.c4 Nf6 12.Qa4+=) 11.Nc4+= Now all is on e5 11...Rb2?? (better 11...Bb4 12.c3 Bc5=) 12.Nd6+- (12.Nb2?! Bb4 13.Nd2 Nf6+=; worse 12.Qd6 Rb6 13.0-0-0 f6 14.Nb6 ab6 15.Qc6 Bd7 16.Qb6 Nh6+-) 12...Kd7 (12...Kf8 13.Nc8 Qc7+-) 13.Nf5 (13.Nf5 Ke8 14.Ne7 Ne7 15.Qd6+-) 1-0. DEFFM – GuestJJTK, freechess.org, 2019.

7.Bb5 de3 8.de3= Qc7 9.h3 (9.Nbd2 Be6=) 9...Be6 (9...Nf6 10.0-0=+) 10.Ng5 Nge7 (10...Nf6 11.0-0=) 11.Ne6 fe6 12.Qh5 (12.Nc3 0-0=) 12...g6 13.Qg4?? (better 13.Qe2=) 13...0-0-0?? (13...Qa5 14.Nc3 Bb4-/+) 14.Qe6+/- Kb8 15.0-0 Nf5 (15...a6 16.Be2+/-) 16.Bc6 (16.Nc3 a6 17.Be2 Na5+/-) 16...Qc6 17.Be5?? (17.Nc3 Rhe8 18.Qb3 e4+/-) 17...Nh4?? (better 17...Rhe8 18.Bd6 Rd6=+ (worse 18...Nd6 19.Qf6+=; worse 18...Qd6 19.Qd6 Nd6 20.Nd2+/-)) 18.Bd6+/- Rd6 19.Qg4 g5 (19...Nf5 20.Na3+/-) 20.Na3+- h5 (20...Qc5 21.Nc4 Rc6 22.Nd2+-) 21.Qg3 (21.Qg5? Nf3 22.gf3 Rg6-+) 21...Rg8?? (better 21...Rhd8+-) 22.Rad1 Nf5 (22...Rgg6 23.Nb5! Nf5 24.Qe5+-) 23.Qe5 Kc8 (23...Rgd8 24.Nb5 g4 25.hg4 hg4 26.Rd3+-) 24.Qf5 (better 24.Nb5 Qd7 25.Qc5 Rc6 26.Na7 Kb8 27.Nc6 Qc6 28.Qf5 Rc8+-) 24...Re6 (24...Qd7 25.Qc5 Rc6 26.Qa7+-) 25.c4 (better 25.Nb5 Kb8 26.Nd4+-) 25...Kb8 26.Qf7 (better 26.Nb5 Re7+-) 26...Reg6 (26...Qe8 27.Qf3 Qe7 28.Nb5+-) 27.Rd7 h4 (27...R6g7 28.Qg7 Rg7 29.Rg7+-) 28.Nb5 g4 (28...R6g7 29.Qg7 Rg7 30.Rg7 Qc8+-) 29.Qf4 Ka8 (29...Rd6 30.Rd6 Ka8 31.Qd4 b6 32.Rc6 gh3 33.Qd7 Rg2 34.Kh1 Rh2 35.Kh2 a6 36.Rc8) 30.Nc7 Kb8 31.Ne6 (31.Ne8! Kc8 32.Rc7 Kd8 33.Rd1 Qd6 34.Rd6 Rd6 35.Qd6 Ke8 36.Qe7) 31...Ka8+- 32.Nf8 a6 33.Rd8 Ka7 34.Qd4 (34.Rb1 Rd6 35.Rd6 Qc8 36.Nd7 b5 37.Qd4 Ka8 38.Nb6 Kb8 39.Nc8 Rh8 40.Qa7 Kc8 41.Rbd1 gh3 42.Rc6) 34...Qb6 35.Ng6 Rd8 36.Qb6 Kb6 37.Rb1 Kc7 (37...Kc5 38.hg4 Rg8 39.Ne5+-) 38.Nh4 (better 38.hg4 b6+-) 38...gh3 39.g3 (better 39.g4!? b6+-) 39...Rd2 40.a4 (40.a3 Rc2+-) 40...Rc2 41.Nf5 Rc4 42.Ra1 Rc2 (42...Kd7 43.Nd4 Rb4 44.Kh2+-) 43.Nd4 (better 43.g4 Kd7+-) 43...Rc4 (43...Rb2 44.g4+-) 44.Kh2 Rb4 (44...Kd6 45.Kh3 Rc5 46.g4+-) 45.Kh3 Rb2 46.Kg2 Kd6 (46...Kd7 47.Kf3+-) 47.Kf3 Ke5 (47...Ke7 48.a5 Rb4 49.g4+-) 48.a5 Rd2 (48...Kf6 49.e4+-) 49.Rc1 (better 49.Rb1 Ra2 50.Rb7 Kd5+-) 49...Ra2 50.Rc5 Kd6 51.Rh5 Rc2 (51...Ke7 52.Rh7 Kd8 53.Nb3+-) 52.g4 (52.Nc2 Ke6 53.Nd4 Kd6+-) 52...Rc5 (52...Rc7+-) 53.Rc5 Kc5 54.g5 Kb4 55.g6 Ka5 (55...Kc4 56.g7 Kc5 57.g8Q b6 58.Qc8 Kd6 59.Qe6 Kc5 60.Qb6 Kc4 61.Ke2 Kd5 62.Kd3 Ke5 63.Qe6) 56.g7 b5 (56...Ka4 57.g8Q Kb4 58.Qd5 b6 59.Ke2 b5 60.Qd6 Kc4 61.Kd2 a5 62.Qc6 Kb4 63.Qb5 Ka3 64.Qb3) 57.g8Q b4 (57...Kb6 58.Qb8 Kc5 59.Qc7 Kb4 60.Qd6 Ka4 61.Ke4 a5 62.Qc5 b4 63.Qd5 b3 64.Qb3) 58.Qb3 (58.Qb3 Kb6 59.Qb4 Kc7 60.Qe7 Kc8 61.Nc6 a5 62.Na5 Kb8 63.Qb7; 58.Qd8 Ka4 59.Qd5 b3 60.Qb3 Ka5 61.Nc6) 1-0. GuestYRTR – GuestJJNV, freechess.org, 2019.

7.Bb5 Nge7 8.ed4 ed4 9.Nd4 0-0 10.Nc6 bc6 11.Be2 (11.Qf3 Bd7 12.Be2 Re8=) 11...Rb8 12.Bd4 Nf5 (12...c5 13.Be3=) 13.Be3 (better is 13.Ba7!? Ra8 14.Be3+=) 13...Ne3 14.de3 (14.fe3? Qh4 15.g3 Bg3 16.hg3 Qh1 17.Bf1 Ba6–+) 14...Be5 15.c3 Qd1 (15...Bf5 16.Qd8 Rfd8 17.0-0+=) 16.Bd1 (16.Kd1 Rb2 17.g4 Be6–/+) 16...Rb2 17.0-0 Ba6 18.Re1 Rd8 (18...Bd3 19.Bb3+=) 19.Bf3 c5 20.Rd1? (better is 20.Be4!?+=) 20...Rd1–+ 21.Bd1 Bd3 22.Na3 Bc3 23.Rc1? (23.Bf3 Bb4 24.Rd1–+) 23...Bb4 24.Nc2 (24.Nc4 Bc4 25.Rc4 Rb1–+ (25...Ra2?! 26.Kf1–+)) 24...Bd2 (24...Ra2? 25.Nb4 Rd2 26.Bf3+–) 25.Ne1 (25.Ra1 Bc2 (25...Rc2?! 26.Rb1 Bb4 27.Bc2 Bc2 28.Rb2=) 26.Bc2 Rc2–+) 25...Be1 (25...Bc1 26.Nd3 Rd2 27.Bb3 Rd3 28.Kf1–+) 26.Rc5 Bf2 27.Kh1 g6 (27...g6 28.Rc8 Kg7–+) 0–1. DEFFM – htygf, freechess.org, 2016.

7.Bb5 Bg4 8.h3 Bh5 (8...Qb6!? 9.a4 Bf3 10.Qf3 a6 11.Bc6 bc6=) 9.g4+= Bg6 10.ed4 ed4 11.Bc6 (11.Bd4 Qe7 12.Qe2 Be4+=) 11...bc6 12.Bd4 Be4?? (better 12...Nf6+=) 13.Bg7+– f6 (13...Be5 14.Ne5 Bh1 15.Qe2+–) 14.Bh8 (better 14.Nc3 Qe7 15.Ne4 Qe4 16.Qe2 Qe2 17.Ke2 Kf7 18.Bh8 Ne7+–) 14...Qe7 (14...Be5 15.d4 Bd4 16.c3 Bc3 17.Nc3 Qd1 18.Nd1 Bf3 19.Rg1+–) 15.0-0 0-0-0 16.Nc3 Nh6 (16...Bg6 17.Re1 Qf7 18.Qe2+–) 17.Bf6! Qf6 18.Ne4 Qf8 (18...Qg6 19.Qe2 Rd7 20.Qc4+–) 19.Qe2 Bc7 (19...Rd7 20.Nfg5 Qe7 21.Qa6 Kd8 22.Qc6+–) 20.Qa6 Kb8 (20...Kd7 21.Nfg5 Qf4 22.Nc5 Ke7 23.Rfe1 Kf6 24.Qc6 Bd6+–) 21.Rab1 Bb6 (21...Qb4 22.Rb4 Bb6 23.Rb6 ab6 24.Qb6 Kc8 25.Qc6 Kb8 26.Rb1 Ka7 27.Qb7) 22.Rb6 ab6 23.Qb6 Kc8 24.Qc6 Kb8 25.Rb1 Ka7 (25...Qb4 26.Rb4 Ka7 27.Qb7) 26.Qb7 1–0. onur604 (2275) – akbarzadeh1341 (2040), lichess.org, 2020.

7.ed4 Qb6 8.Ba3 (8.Na3 Ba3 (8...Qb2?? 9.Nc4 Ba3 10.Nb2 Bb2 11.d5 Ba1 12.dc6+–; 8...Nd4 9.Nc4 Qd8 10.Nd4 ed4 11.Bd4+/–) 9.Ba3 Nd4+=) 8...Ba3 9.Na3 Nd4 10.Ne5 Qc5 (10...Qe6 11.f4 f6=) 11.Bb5?? (better is 11.Nac4 f6 12.Nf3+=) 11...Nb5–+ 12.Qe2?? (12.Nb5 Qe5 13.Qe2 Qe2 14.Ke2–+) 12...Na3 (12...Qa3?! 13.Ng6 Ne7 14.Nh8–/+) 13.Nd7 (13.0-0 Ne7 14.c3–+) 13...Qe7 (13...Qe7 14.Qe7 Ne7–+) 0–1. GuestJXBM – GuestFYKZ, freechess.org, 2017.

7.ed4 Nd4 8.Nd4 ed4 9.Bd4 Qe7 10.Qe2 Nf6 11.Qe7 Be7 12.Bb5 Bd7 13.Nc3 Bb5 14.Nb5 0-0 15.Ba7 Rfe8 16.0-0 Bd8 (16...b6 17.Rfe1+- (17.Bb6?! Reb8+=)) 17.Rfe1 Ba5 18.Re8 Re8 19.Be3 Nd5 20.Nd6 Rb8 (20...Ra8 21.c3 Bd8 22.Nb7 Ne3 23.fe3+- (23.de3?! Be7+-)) 21.c3 b5 (21...Bc7 22.Nb5 Rc8+-) 22.Ba7 Rd8 23.Nb5 Nf4 24.Re1 g5 25.Bd4 h6 26.Re7 Rb8 27.a4 Bb6 28.Bb6 Rb6 29.d4 Ra6 30.g3 Nd3 (30...Kf8 31.Rd7 (31.gf4 Ke7 32.fg5 hg5=+) 31...Nh3 32.Kg2+-) 31.Ra7 Re6 (31...Rf6 32.d5 Nf2 33.Re7 Nh3 34.Kg2+-) 32.d5 Re2 (32...Re1 33.Kg2 Re2 34.d6 Rf2 35.Kg1+-) 33.d6 Nf2 (33...Re8+-) 34.d7 Nh3 35.Kf1 Rd2 36.Nd4 Kg7 (36...g4 37.d8Q Kg7 38.Nf5 Kg6 39.Ra6 Kf5 40.Qd2 f6 41.Qd3 Ke5 42.Qd4 Kf5 43.Rf6 Kg5 44.Qe5) 37.d8Q Rh2 (37...Rf2 38.Ke1 Nf4 39.Kf2 Nd3 40.Ke2 Kg6 41.Qg8 Kh5 42.Qf7 Kg4 43.Qe6 Kh5 44.Kd3 g4 45.Ra5) 38.Nf5 Kg6 39.Ra6 Kh5 (39...f6 40.Rf6 Kh5 41.Ng7 Kg4 42.Qd1 Re2 43.Qe2 Kg3 44.Qg2 Kh4 45.Rh6) 40.Qd1 g4 (40...Re2 41.Qe2 g4 42.Qe3 Nf4 43.Qf4 f6 44.Qh6) 41.Rh6 Kg5 42.Qd8 Kf5 43.Qd5 1-0. DEFFM – GuestJQXY, freechess.org, 2021.

7.ed4 e4 8.Ne5 Be5 9.de5 Qe7 10.d4 ed3 11.Bd3 Nf6 12.0-0 Ne5?? (better 12...Ng4+/-) 13.Be5+- 1-0. onur604 (2320) - A1234562 (2275), Casual Rapid game, lichess.org, 2021.

7.ed4 e4 8.Ne5 Be5 9.de5 Qg5 10.Qe2 Qf5 (10...Bf5!?+/–) 11.Nc3 Nd4 12.Ne4 (12.Qe4?! Nc2 13.Kd1 Na1 14.Bb5 Kf8 15.Ba3 Ne7=) 12...Nc2?? (better is 12...Ne2 13.Nd6 Kf8 14.Nf5 Bf5 15.Be2 Be4+–) 13.Kd1 Qd7 (13...Qg6 14.Kc2 Ne7 15.Kd1+–) 14.Kc2 Qa4 15.Kb1 Bf5 16.Qb5 Qb5 17.Bb5 Ke7 18.Ba3 Kd8 19.d3 a6 20.Ba4 b5 21.Nd6 Bd3 22.Kb2 Nh6 23.Rad1 ba4 24.Rd3 Rb8 25.Ka1 Kc7 26.Rc1 Kb6 27.Rdc3 Ka7 28.Rc7 Kb6 29.R1c6 Ka5 30.Nc4 (30.Nc4 Kb5 31.Rc5) 1–0. Taulien,Hans_Juergen – Kirmse,Horst, remoteschach.de, 2003.

7.ed4 e4 8.Ne5 Nf6 9.Na3 0-0 10.Nac4 Bb8 (10...Bc7 11.Nc6 bc6 12.Be2=) 11.Nc6+= bc6 12.Be2 Bb7 (12...Nd5!?+=) 13.0-0 Qc7 (13...Bc7 14.Rb1 Re8 15.Ne5+/-) 14.Ne5 (14.g3 Qd7+-) 14...Re8 (14...c5 15.f4+/-) 15.Bc4 (15.Rb1!? c5 16.g3+/-) 15...Re7+/- 16.g3 c5 17.Ng4 cd4 (17...Qc6!? 18.Ne3 cd4 19.Bd4 Be5 20.Be5 Re5+/-) 18.Nf6+- gf6 19.Qg4 Kf8 20.Ba3 Qc4 21.Qd7 Bd6?? (better 21...Kg7 22.Be7 Qc8 23.Qc8 Bc8+-) 22.Bd6 Qe6 23.Qb7 (23.Qe7?! Qe7 24.Be7 Ke7+-) 23...Qd6 24.Qa8 Kg7 25.Rfb1 f5 26.Rb8 f4 (26...Rc7 27.Rc1+-) 27.Rh8 fg3 (27...f6 28.g4 Qd7 29.Qf8 Kg6 30.Rg8 Rg7 31.Rg7 Qg7 32.Qe8 Qf7 33.Qe4 Kg5 34.Qf5 Kh6 35.Rb1+-) 28.Qg8 (28.fg3 Kf6 29.Rd8 Ke5 30.Rd6 Kd6 31.Qd8 Rd7 32.Qf6 Kd5 33.Rb1 Rb7 34.Rb7 Kc5 35.Qe5 Kc6 36.Rc7 Kb6 37.Qc5 Ka6 38.Ra7) 28...Kf6 29.fg3 d3 (29...Ke6 30.Rh7 Kd7 31.Rb1+-) 30.Rh7 Qd4 (30...Qb6 31.Kg2 Ke5+-) 31.Kg2 Ke6 32.Rh6 Kd7 33.Rb1 Qd5 (33...f6 34.Rb7 Kd6 35.Qd8 Kc6 36.Qe7 a6 37.Qc7 Kd5 38.c4 Qc4 39.Rh5 f5 40.Qd7 Kc5 41.Rf5 Qd5 42.Qd5) 34.Rb8 e3 35.Kg1 (35.Kg1 Qe6 36.Qd8 Kc6 37.Re6 fe6 38.Qe7 ed2 39.Qe6 Kc5 40.Qe5 Kc6 41.Rc8 Kb6 42.Qc5 Ka6 43.Rc6 Kb7 44.Rc7 Ka6 45.Ra7) 1-0. DEFFM – GuestPWLJ, freechess.org, 2021.

7.ed4 ed4

8.Nd4 Qb6 9.Nb5 Bf8 10.Bc4 (10.N1c3 Be6 11.Ne4 Kd7+–) 10...a6 11.Qf3 Be6 (11...Nh6 12.Qe4 Kd8 13.Qd5 Bd7 14.Qg5 Kc8 15.Bg7 Rg8 16.Nd6 Kc7=+) 12.Be6 fe6 13.Nd6! Kd7 (13...Bd6 14.Bg7 Combination) 14.Nc4 Qb4 15.Nba3 b5?? (better 15...Ke8+–) 16.Nb6 Kc7 (16...Ke7 17.Nac4 bc4 18.Ba3+– (18.Na8 Qb2 19.0-0 Qb7=+)) 17.Na8 Kb7 18.0-0 (18.Rb1 Qc5 19.c4 Qf5 20.Qf5 ef5 21.cb5 ab5 22.Nb5 Ka8+–) 18...Nge7 19.Rab1 (19.Rfb1 Qc5 20.c4 b4+–) 19...Qc5 20.c4! Ka8 (20...bc4 21.Bg7 Double attack (21.Qe2 Decoy)) 21.cb5 ab5 (21...Qd5 22.Qd5 ed5 23.bc6 Nc6 24.Rfc1 Ba3 25.Rc6 Bb2 26.Rb2+–) 22.Nb5! Qb5 23.Bg7! Qb1 (23...Bg7 24.Qg4 Double attack (24.Rb5 Discovered attack; 24.Qg4 Decoy)) 24.Rb1 (24.Bf8?! Qb7+–) 24...Bg7 (24...Nd5 25.Bf8 h6 26.Qa3 Na7 27.Qb3 Nb6 28.Qb6 Nb5 29.Qa6 Kb8 30.Bd6) 25.Qa3 Na7 26.Qb3 (26.Qb3 Nb5 27.Qb5 Bb2 28.Qb2 Rc8 29.Qb7) 1–0. onur604 (2320) – wow1972 (2125), lichess.org, 2020.

8.Nd4 Nd4

9.Bd4 Qe7 10.Qe2 Qe2 11.Be2 (11.Ke2 Nf6+–) 11...Nf6 (11...Ne7!?+–) 12.Nc3 0-0 13.Bf6 gf6 14.Nd5 Be5 15.Rb1 Be6 16.Bf3 Rab8 17.0-0 Rfd8 18.c4 b5 19.d3 Bf5?? (better 19...Kf8+–) 20.Ne7+– (20.Ne7 Kg7 21.Nf5 Kf8 22.Rfd1 bc4 23.Rb8 Bb8 24.dc4 Rd1 25.Bd1+–) 1–0. onur604 (2320) – SlavChernus (2260), lichess.org, 2020.

9.Bd4 Nf6 10.Bb5 Bd7 11.Bd7 Qd7 12.Qe2 Qe7 (12...Kf8 13.Nc3+=) 13.Qe7 Be7 14.Nc3 0-0 15.Rb1 b6 16.0-0 (16.Kd1 Rfd8 17.Re1 Rd4 18.Re7 Kf8+/-) 16...Bc5 (16...Rfd8!? 17.Ne2 Rac8+=) 17.Bf6 (17.Bc5 bc5 18.f3 c4+/-) 17...gf6 18.Ne4 1-0. GuestSHNL – GregJohnstone, freechess.org, 2020.

9.Bd4 Nf6 10.Bb5+/- Bd7 11.Bd7 Qd7+= 12.Bf6 gf6 13.0-0 0-0-0 14.d4 Qf5 (14...Rhe8 15.Qd3+/-) 15.Nc3 Be5 (15...Rhg8 16.g3+/-) 16.Ne2+/- Bd6 (16...Rhe8 17.Ng3 Bg3 18.fg3+/-) 17.c4 (17.Ng3 Qd7+/-) 17...Rhg8+/- 18.Ng3 Qg5 (better 18...Qg4!?+/-) 19.Rb1+- h5?? (19...Qg4 20.Qb3 Qd7+-) 20.Qf3 Rd7 (20...b6 21.Qa8 Bb8 22.c5 Rd4 23.c6+-) 21.Ne4 Qf4 22.Qf4 Bf4 23.Nf6 Rgd8 24.Nd7 Rd7 25.Rfd1 f5 (25...Bg5 26.Rb5 Bf6 27.Rh5 Bd4 28.Rd5 Rd5 29.cd5+-) 26.Rb5 Rf7 27.g3 Bg5 (27...Bh6 28.Rc5 Kb8 29.Rd3+-) 28.Re1 h4 (28...Be7 29.Ree5 f4 30.Rh5 fg3 31.Rh8 Bf8 32.hg3+-) 29.Re8 Kd7 (29...Kc7 30.g4! Rg7 31.Rf5 Bd2+-) 30.Rg8 Bd2 (30...Be7 31.Rb7 Kc6 32.Ra7 Kb6+-) 31.Rb7 Ke6 32.Rg6 Rf6 33.d5 Ke5 34.f4 Bf4 35.gf4 (35.gf4 Ke4 36.Rf6 Kd3 37.d6 Kd4 38.d7 Kc3 39.d8Q Kc2 40.Qd4 a6 41.Rd6 h3 42.Qd2) 1-0. GuestMLSN – GuestZCSY, freechess.org, 2020.

9.Bd4 Nf6 10.Bb5 Bd7 11.Bd7 Qd7 12.Bf6 gf6 13.0-0 Rc8 14.Re1 Kf8 15.Nc3 Be5 16.Qh5 Qd2 17.Ne4 Qd5?? (17...Qf4 18.Rad1 Rg8+- (18...Rc2?? 19.g3 Rg8 20.Rd8 Ke7 21.Rg8+-)) 18.Nf6!+- (18.Nf6 Qe6 19.Qe5 (19.Re5?! Qf6 20.Rae1 b6+-) 19...Qe5 20.Re5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

9.Bd4 Nf6 10.Bb5+/- Bd7 11.Qe2 Kf8+/-.

9.Bd4 Qg5 10.Bb5 (10.Nc3!? Qe7 11.Qe2+/-) 10...Qb5 (10...Kf8 11.Qe2 Nf6 12.f3=) 11.Bg7+= f6? (better 11...Qg5 12.Qe2 Ne7 13.Bh8 Qg2+=) 12.Nc3+- (12.Bh8?! Qe5 13.Qe2 Kf7+/-) 12...Qe5 13.Ne2?? (better 13.Kf1 Be6 14.Qf3+-) 13...Bg4 (13...Ne7 14.Bh8 Kf7 15.d4 Qa5 16.Qd2 Qd2 17.Kd2=) 14.Bh8 0-0-0 15.f3 Bh5 (15...Bd7 16.d4 Qg5 17.Qd2 Qg2 18.0-0-0 Qf3 19.Kb1+/-) 16.d4+- Qe3? (16...Qg5 17.g4 Qh4 18.Kf1 Bf7+/-) 17.Qd2 (17.Qd3 Qh6 18.Qc3 Kb8+-) 17...Qe6 18.g4 Bg6 19.0-0 Ne7 20.Bg7 Qf7 21.Bh6 f5 (21...Qc4 22.c3+-) 22.Bf4 fg4 (22...Qc4 23.Bd6 Rd6 24.c3+-) 23.Bd6 Rd6 24.fg4 Qe6 25.Rf8 (25.h3 Qc4+-) 25...Kd7 26.h3 Qe4 (26...Qc4 27.Rb1 b6 28.Rb2+-) 27.c4 Re6 (27...Nc6 28.c5 Rd5 29.Rd1+-) 28.Nf4 Qe3 29.Qe3 Re3 30.Kf2 Rc3 (30...Ra3 31.Ng6 hg6 32.Rf7+-) 31.Ng6 hg6 (31...Ng6 32.Rf7 Ke6 33.Rb7+-) 32.Re1 Kd6 (32...Nc6 33.Rf7 Kd6 34.Rf6 Kd7+-) 33.Rf6 Kd7 34.Rf7 Rc4 (34...Kd6 35.Ree7 b5 36.cb5+-) 35.Ree7 Kc6 36.Rc7 Kd5 37.Rfd7 Ke4 (37...Ke6 38.d5 Ke5 39.Rc4 b5 40.Rc5 Kf4 41.Ra7 Ke4 42.d6 Kd4 43.d7 g5 44.d8Q Kc5 45.Rc7 Kb6 46.Qd6 Ka5 47.Ra7) 38.Rc4 (38.Rc4 Kd3 39.Rb4 b5 40.Rb5 a6 41.Rb3 Kd2 42.Rdb7 a5 43.Ra7 a4 44.Ra4 Kd1 45.Rc4 Kd2 46.g5 Kd1 47.Rd3) 1-0. DEFFM – guestIH, freechess.org, 2019.

6.Bd3 Nf6=

7.ed4 cd4 8.0-0 0-0 9.Re1 Re8 10.Ng5 h6 11.Ne4 Ne4 12.Be4 Nd7 13.Qf3 Nc5 14.Bd5 Rf8 (14...Be6 15.Bb7 Nb7 16.Qb7=+) 15.Ba3 Rb8 16.Bc5 Bc5 17.Re5 Qa5 (17...Bd6 18.Re1+=) 18.a4 Bb4 19.Qd3 Bc5 (better 19...Bd6!? 20.Re1 Qc7+/-) 20.Bf7!+- Rf7 (20...Rf7 21.Rc5 Discovered attack; 20...Kf7 21.Qc4 Double attack (21.Rc5 Discovered attack; 21.Qc4 Decoy)) 21.Rc5 Be6 (21...Qb4 22.Rc4 Qb2 23.Qa3+-) 22.Qd4 Rd8 23.Qe4 Qb6 24.Qe3 Rdf8 (24...Bg4 25.Re5 Qg6 26.d3+- (26.Qa7 Bh3 27.Re8 Re8 28.Qb7 Re1)) 25.Nc3 Qd6 26.Ne4 Qd7 27.Re5 b6 28.d4 Bf5 29.f3 Rc8 30.c3 Qd5 (30...Qc7+-) 31.Rd5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.ed4 cd4 8.0-0 0-0 9.Re1 Bg4 (9...Re8!? 10.Bf1 Bg4-/+) 10.h3= Bh5 11.g4 Ng4 (11...Bg6 12.Bg6 hg6 13.Ne5 Be5 14.Re5=) 12.hg4 Bg4 13.Na3 (13.Be4 Nd7 14.c3-+) 13...f5= 14.Bc4 (better 14.Be2!? e4 A) 15.Nd4?? Qh4 16.Nf3 ef3 (16...Bf3?! 17.Bf3 Qh2 18.Kf1 Ba3 19.Ba3 Qh3 20.Bg2 Qa3 21.d3=) 17.Bf3 Qh3 18.Bd5 Kh8-+; B) 15.Nc4=+) 14...Kh8-/+ 15.Be2 Nd7 (15...e4 16.Nc4 A) 16...Bf3 17.Bf3 ef3 18.Qf3= (18.Nd6?? Qg5 19.Kh2 Qg2); B) 16...Bf4-/+) 16.Nc4+= Bc7 (better 16...Qf6+=) 17.Ba3?? (better 17.Nfe5 Be5 18.Bg4 fg4 19.Ne5= (19.Re5 Ne5 20.Ne5 Qh4-+)) 17...Rf6=+ 18.Nfe5 Ne5 (18...Be5 19.Bg4 Decoy; 18...Ne5 19.Ne5 Combination) 19.Ne5 Be5 20.Bg4 Bh2?? (20...Rg6 21.Re5 Rg4 22.Kf1 Qg5-+) 21.Kh2+- fg4 22.Qe2 Rh6 (22...Rf3 23.Bb4 d3 24.cd3+-) 23.Kg1 Qh4?? (23...a6+-) 24.Qe8! Re8 (24...Re8 25.Re8 Mate attack) 25.Re8 1-0. DEFFM – GuestJXGV, freechess.org, 2020.

7.ed4 cd4 8.0-0 0-0 9.Qe2 Bg4 10.h3 Bf3 11.Qf3 Nbd7-/+.

7.ed4 e4 8.dc5 Be7 9.Be4 Ne4 10.0-0 Nc5 11.d4=+.

7.Ng5 0-0 8.Na3 h6=+.

6.ed4 cd4

7.c3 Bc5 8.Qe2+/- Ne7 (8...Be7 9.Qe5 Nf6 10.Qd4+- (10.Nd4?! 0-0 11.Be2 Re8=)) 9.Qe5+- Nd7 10.Qg7 Rg8 11.Qh7 Nf6 12.Qd3 Bf5 13.Qc4 Bb6 (13...dc3 14.Nc3 (14.Qc5?? cb2 15.Qc3 ba1R 16.Qa1 Qc7-+) 14...Rc8 15.Qe2+-) 14.Nd4 Rc8 15.Qb3 Qd5? (15...Bd4 16.cd4 Ned5+-) 16.Qd5 (16.Nf5?! Qf5 17.f3 Rd8+-) 16...Nfd5 17.Nf5 Nf5 18.g3 (18.Na3 Kd7 19.Nc4 Nd6+-) 18...Nc7 (18...Rc7 19.Bd3 Re7 20.Kf1+-) 19.a4 Nd6 (19...Ne6+-) 20.a5 Bc5 21.d4 Bd4 (21...Ncb5 22.Nd2 Nd4 23.cd4+-) 22.cd4 Ne6 (22...Ncb5 23.Na3 Na3 24.Ba3+-) 23.Na3 (better 23.d5 Nc5 24.Nc3 f5+-) 23...Nf5 (23...Kd7 24.Be2+-) 24.Bh3 Ne7 25.0-0 f5 (25...Rd8 26.Bg2 Rg6 27.Rad1+-) 26.Rfe1 (26.Bg2 Kd7+-) 26...Kf7 (26...Ng5 27.Bg2 Ne4 28.Rac1+-) 27.Re5 (27.Bg2 Rcd8+-) 27...Ng7 (27...Ng5 28.Bg2 Ne4 29.Re1+-) 28.Rae1 Rce8 (28...Rge8 29.Bg2 Rc7 30.Rc5+-) 29.Nc4 Ng6 30.Nd6 Kf6 31.Ne8 (31.Ne8 Kf7 32.Nd6 Kf6 33.Rc5+-) 1-0. GuestNTFH – GuestRDYS, freechess.org, 2020.

7.c3 Bg4 8.Be2 d3 9.Bd3 Nf6+=.

7.c3 Bg4 8.h3 Bf3+= 9.Qf3 (worse 9.gf3 Nf6=+) 9...Qc7 (better 9...Nf6!? 10.cd4 Nbd7+=) 10.cd4+- Nd7 11.Na3 (11.Nc3 Ngf6 12.Rc1 Qa5+/-) 11...Ngf6 (11...ed4 12.Nc4 Bc5 13.Bd3+/-) 12.Rc1 (12.b6 A) 12...Nb6? 13.de5 Ba3 14.Bb5 (14.Ba3?! Qe5 15.Qe3 Qe3 16.fe3 0-0-0+=; 14.Qa3?! Nfd7+-) 14...Nfd7 15.Qa3+- (15.Ba3?! Qe5 16.Qe3 0-0-0+/-); B) worse 12...ab6 13.Nb5 Qb8 14.Nd6 Qd6 15.de5+-; C) 12...Qb8 13.ba7 Ra7+-) 12...Qb8+/- 13.Nc4 (13.Nc4 0-0 14.Be2+-) 1-0. DEFFM – Guestzzz, freechess.org, 2020.

7.c3 Bg4 8.h3 Bh5 9.g4 Bg6 10.cd4 e4 11.Ne5 Nf6 12.Nc3 Be5 13.de5 Nd5 14.Qb3 Nf4 15.Qb4 (15.Qc4!? Nd3 16.Bd3 Qd3 17.Qc8 Qd8 18.Qb7+-) 15...Nd3+/- 16.Bd3 Qd3? (better 16...ed3 17.Rc1 a5+/-) 17.Ba3+- Qd7 18.Nd5 (18.Ne4?! Be4 19.Qe4 a6+-) 18...a5 (18...Kd8 19.Rc1 e3 20.fe3+-) 19.Qc5 1-0. onur604 (2320) - yfg08 (2155), Casual Rapid game, lichess.org, 2021.

7.Bc4 Qc7 8.Qe2+= Bg4 9.Bd4 Increases the pressure on e5 9...Bf3 10.gf3 Ne7 11.Bb2 0-0 12.Nc3 Nd7 13.Ne4 Ng6 14.Nd6 (14.0-0-0 Nf4 15.Qe3 Qc4 16.Nd6 Qa2+=) 14...Qd6 15.0-0-0 Nf4 (15...Rac8 16.d3+=) 16.Qe4 Nc5? (better 16...Rac8 17.d3 a6+=) 17.Qe5+- Qe5 18.Be5 Nfe6 19.Rhg1 f6?? (19...Nd7 20.Be6 Ne5+-) 20.Bd6 Kh8 21.d4 Rac8 (21...Rfd8 22.Bc5 Nf4 23.Kb2+-) 22.Bf8 Nf4 (22...Rf8 23.Rge1 Nd4 24.Rd4 Rb8+-) 23.Bg7 1-0. DEFFM – GuestXTMJ, freechess.org, 2019.

7.Bc4 Qc7 8.Qe2 Bg4 9.Bd4 The pressure on e5 grows 9...Bf3 10.gf3 Ne7 11.Be3 Nf5 12.Nc3 Nd4?? (better 12...Nd7+/-) 13.Bd4+- Nd7 14.Nd5 Qc4 (14...Qd8+-) 15.Qc4 ed4 16.Nc7 Bc7 17.Qc7 b6 (17...Rd8 18.Qb7 0-0 19.Qa7+-) 18.Rg1 g6 19.Rg4 Nc5 20.Qe5 Kd7 21.Rd4 (21.Rd4 Kc8 22.Qh8 Kb7 23.Rd8 Rd8 24.Qd8+-) 1-0. DEFFM – GuestXCJR, freechess.org, 2019.

7.Bc4 Qe7 8.0-0+= h5? (better 8...Nf6 9.Re1 Qc7+=) 9.Re1+- f6 (9...Nf6 10.Bd4! Nbd7 11.Nc3+-) 10.Bd4! Bg4 (10...ed4 11.Re7 Double attack (11.Re7 Pinning; 11.Re7 Deflection)) 11.h3 (11.d3 Qc7 12.h3 Bf5+-) 11...Be6 12.Nh4 (better 12.Bb3 Nd7 13.Nc3 g5+-) 12...Rh6? (better 12...Bc4 13.Ng6 Qd7 14.Nh8 Qf5+-) 13.Be6 Qe6 14.Qf3 Nd7 15.Nf5 Rg6 16.Qh5 Ne7 (16...Kf7 17.Nh4 Nf8+-) 17.Ng7 Kf7 18.Ne6 Ke6 19.f4 (19.Qf3 Nf5 20.Qb7 Rb8+-) 19...Rag8 20.g4 Nc5 21.fe5 fe5 22.Be5 Rg5 23.Bf4 Kd7 24.Bg5 (24.Bg5 Rg5 25.Qg5+-) 1-0. DEFFM – GuestZVHB, freechess.org, 2019.

7.Bc4 h6 8.0-0 Nf6 9.Qe2 Bg4 10.Bd4 Pawn e5, live or die! 10...0-0 11.Be5 Be5 12.Qe5 Bf3 13.gf3 Re8 14.Qf4 Nbd7 15.Kh1 Qb6 (15...Ne5!? 16.Rg1 Kh8=) 16.d4+/- Rac8 (16...g5 17.Qf5 Kg7 18.Rd1+/-) 17.Nd2+- Qa5 (17...Kf8 18.a4+-) 18.Rg1 Nh5?? (better 18...Kh8 19.Rad1 Qb4 20.Bf7 Re7+-) 19.Bf7 Kh8 20.Bh5 Rf8 (20...Re7 21.Ne4 Rf8 22.Qd6+-) 21.Qg4 Nf6 (21...Rg8 22.Ne4 Qc7+-) 22.Qg7 1-0. DEFFM – GuestFLZZ, freechess.org, 2021.

7.Bc4 h6 8.c3 e4 9.Nd4 Qg5+=.

7.Bc4 h6 8.Qe2 Qe7 (8...Nf6 9.Ne5 0-0 10.Bd4 Be5 11.Be5+/- (11.Qe5?? Re8 12.0-0 Re5 13.Be5 Be6-+)) 9.0-0 Nf6 (9...Bg4 10.Re1+/-) 10.Re1+/- Nbd7 11.d3 b6 (11...0-0 12.Bd4 Re8 13.Bb2+/-) 12.Qd1 (12.Nbd2 Bb7 13.Qd1 Bf3 14.Nf3+- (14.gf3?! 0-0+=)) 12...0-0 (better 12...Bb4!? 13.Nbd2 Bc3+/-) 13.Nd4!+- Bb7?? (13...ed4 14.Re7 Pinning (14.Re7 Deflection)) 14.Nf5 Qd8 15.Nd6 Qc7 16.Ba3 Nc5 17.Nb7 Qb7 18.Re5 Rfe8 (18...Rae8 19.d4 Re5 20.de5+-) 19.Bb2 Nfd7 (19...Re5 20.Be5 Ncd7+-) 20.Rf5 (20.Rf5 Re7 21.Nd2+-) 1-0. GuestJVKF – GuestNDCW, freechess.org, 2020.

7.Bc4 Nh6 8.h3 (8.Qe2 Qe7=) 8...Be6 (8...0-0!?=+) 9.Be6= fe6 10.Qe2 Nd7 11.0-0 (11.c3 0-0+=) 11...0-0 12.Nd4 (better 12.c3 Rf4 13.Re1+=) 12...ed4-/+ 13.Qe6 Nf7 14.Bd4 The passed pawn on d2 will quickly become a dangerous weapon 14...Be5 15.Be5 Nde5 16.Qb3 (16.Re1 Re8 17.Re5 Re6 18.Re6 Qc8-+) 16...Qd4 17.c3 Qc4 (better 17...Qd3!?-/+) 18.d4= Qb3 19.ab3 Nd7 20.c4 Nd6 21.Nc3 a6 (21...Kf7!?=) 22.ba6+/- ba6 The passed pawn on c4 quickly leads to threats 23.Rfd1 Nf6 24.f3 a5 (24...Rfb8 25.Ra3+=) 25.c5+/- Nf5 26.d5 Ne3 27.Rd2 (27.Rd3 Rfe8+-) 27...Rfb8 (better 27...Rfd8 28.d6 Rab8+/-) 28.d6 (better 28.Re1!? Nfd5 29.Nd5 (worse 29.Rd5 Nd5 30.Nd5 Rb3=+) 29...Nd5 30.Rd5 Rb3 31.Rd7+-) 28...Rb3= 29.Rc1 Rc8 30.Ne4 Ned5 (30...Ne4 31.d7 Rd8 32.fe4 Rb4+-) 31.c6+/- h6 (better 31...a4!?+/-) 32.d7+- Nd7 33.Rd5 Nf8 (33...Nb8 34.c7 Kf7 35.Rd8 Rc7 36.Rc7 Kg6 37.Rcc8+-) 34.Ra5 Rb6 35.Rac5 (35.c7 Rb7 36.Rac5 Ne6+/-) 35...Ne6 (35...Rc7 36.Kf2 Ne6 37.R5c4+-) 36.R5c4 Rc7 37.Nd6 Nd8 38.Nf5 Kf7 39.Rd1 (better 39.Nd4+-) 39...Kf6?? (better 39...Rbc6!? 40.Nd6 Ke7 41.Rc6 Nc6+/-) 40.Ng7 (better 40.Ne3 Rbc6 41.Rc6 (41.Rd8?! Rc4 42.Nc4 Rc4+/-) 41...Rc6 42.Rd8 Rc1 43.Kf2+-) 40...Kg7 41.Rd8 Rcc6 42.Rc6 Rc6 43.Rd5 Kg6 44.Kh2 (44.Kh2 Rc2 45.f4+-) 1-0. Sternik,Ryszard - Roczniak,Jan, corr Poland, 1991.

7.Be2 h6 8.0-0 Nf6 9.c3 Be6 (9...dc3!? 10.Nc3 e4=) 10.cd4+/- ed4 (10...e4 11.Ne5 Nbd7 12.Na3+=) 11.Nd4 (11.Bd4?! 0-0+=) 11...Nbd7 (11...Bc8!?+/-) 12.Ne6+- fe6 13.Bh5 Kf8 14.Re1 e5 (14...Nh5 15.Qh5 Nf6 16.Qh3+-) 15.Bg6 (better 15.Qf3+-) 15...Qb6? (15...h5+-) 16.Qb3 Qf2 (16...Ke7 17.Na3 Bc7+-) 17.Kf2 Ke7 18.Qf7 (18.Na3 Rhf8 19.Nc4 Nc5+-) 18...Kd8 19.Kg1 (better 19.Ke2 Rf8 20.Qg7 Rc8+-) 19...Kc7 20.Rc1 Kb6 21.Qe6 Kb5 (21...a5 22.Qd6 Ka7 23.Rc7 Rag8 24.Qa6 Kb8 25.Qb7) 22.Bd3 Kb6 (22...Ka5 23.Bc3 Bb4 24.Bb4 Kb4 25.Qb3 Ka5 26.Qb5) 23.Qd6 (23.Qb3 Ka5 24.Qb5) 23...Ka5 24.Bc3 Ka4 25.Qa3 (25.Qb4) 1-0. DEFFM – GuestQDVV, freechess.org, 2019.

7.c3 dc3

8.Nc3 Nd7? 9.Ne4+/- Bb8 10.Qc2 (10.Qb3!? Ndf6 11.Nf6 Qf6 12.Ne5 Be6+-) 10...Ngf6 11.Bd3 (11.Bc4 Nb6 12.Nf6 Qf6 13.Bd3+/-) 11...a5 (11...0-0!?+=) 12.0-0 (better 12.Ba3 Nd5 13.0-0+/-) 12...b6? (better 12...0-0+/-) 13.Nf6+- gf6 14.Bh7 (14.Be4 Ra7 15.Ba3 Bb7+-) 14...Bb7 (14...Qc7 15.Bc3+-) 15.Be4 Nc5 (15...Be4 16.Qe4 Ra7+-) 16.Bb7 Nb7 17.Qc6 Qd7 18.Qf6 (18.Qb6?! Nd6 19.Rac1 Ba7+-) 18...Rg8 (18...Rh5 19.Ne5 Be5 20.Rfe1+-) 19.Rfe1 Nc5 (19...Qe6 20.Be5 Qf6 21.Bf6 Kf8+-) 20.Ne5 Qd5 21.g3 Ra7 22.Nc6 Kd7 23.Re7 Kc8 24.Ra7 Ba7 25.Ne7 (25.Ne7 Kb7 26.Nd5 Rc8 27.Qf7 Kb8 28.Be5 Ka8 29.Nc7 Kb8 30.Na6 Ka8 31.Nc5 Rc7 32.Qc7 bc5 33.Qc6) 1-0. GuestSFKZ – AboveTheBlueSkies, freechess.org, 2020.

8.Nc3 Nf6 9.Bc4 0-0 10.Qe2 Bg4 11.Ne4 Ne4 12.Qe4 Bf3 13.Qf3 (worse 13.gf3 Nd7=) 13…Qd7 1-0. DEFFM – GuestHMJM, freechess.org, 2021.

8.Nc3 Nf6 9.Bd3 Bg4 10.0-0 0-0 11.Ne4 Ne4 (11...Re8 12.Nf6 Qf6 13.Be4=) 12.Be4+= Qd7 13.a4 (13.d4 Qb5 14.de5+=) 13...Kh8 (better 13...f5!? 14.Bd5 Kh8+=) 14.Be5+– Bf3 (better 14...Re8 15.Bb7! Be5 16.Ba8 Ba1 17.Qa1 Bf3 18.Bf3 Qd2+–) 15.Bg7 (better 15.Qf3 Be5 16.Bb7 Ba1 17.Ra1 Qd2 18.Ba8+–) 15...Kg7= 16.Qf3 Qd8?? (16...a6 17.Rab1 h6 18.ba6 Ra6 19.Rb7 Qe6+= (19...Qa4?? 20.Qg4 Kh8 21.Qf5 Qe4 22.Qe4+–)) 17.Bb7+– Nd7 (17...Be5 18.Rae1 (18.Ba8?! Ba1 19.Ra1 Qd2+–) 18...Qd6 19.g3+–) 18.Ba8 Ne5 19.Qd5 Ng4 20.Qd4 (20.h3 Bh2 21.Kh1 Be5+–) 20...Nf6 21.Qh4 Be5 (21...Bh2 22.Qh2 Qa8+–) 22.Qg5 (22.Qg5 Kh8 23.Qe5+–) 1–0. onur604 (2315) – A62AA (2230), lichess.org, 2020.

8.Nc3 Bg4 9.Ne4 (better 9.Bd3+/-) 9...Bc7? (9...Nf6!? 10.Nd6 Qd6+=) 10.h3 (10.Rc1 Nf6 11.Qa4 Ne4 12.Qe4 Bf3 13.Qf3 0-0+-) 10...Bh5 (10...Bf5 11.Ng3 Bg6 12.h4+/-) 11.Ng3 (11.Rc1 Nf6 12.Qc2 Bf3 13.gf3 Ne4 14.Qe4 0-0 15.Qb7 Ba5+/-) 11...Bf3 (better 11...Bg6!? 12.h4 h5 13.Be5 Nf6+/-) 12.Qf3 (12.gf3?! Ne7+=) 12...Nd7 (12...Ne7 13.Rc1 (worse 13.Qb7 Nbc6+/-) 13...Ba5 14.Bd3+-) 13.Nf5 (13.Nh5 g6 14.Ng7 Ke7+-) 13...Qf6 14.Ng7 Qg7 (14...Kd8 15.Nf5 (15.Qb7?! Rb8 16.Qa7 Bb6=) 15...Ne7 16.Bd3+- (16.Qb7 Rb8 17.Qa7 Nf5-/+)) 15.Qb7 Rb8 (15...Rd8 16.Qc7 Ngf6 17.Qa7+- (17.Be5?! Ne5 18.Qe5 Kf8+-)) 16.Qc7 Ne7 (16...Qg6 17.Qa7 Ngf6 18.Qa3+-) 17.Qa7 Rd8 (17...Nd5 18.Rc1+-) 18.f4! Ng6 (18...ef4 19.Qd4 Double attack (19.Bg7 Pinning; 19.Bg7 Deflection; 19.Qd4 Decoy)) 19.fe5 (19.g3 Ne7 20.Qf2 Qg6+-) 19...Nge5 (19...0-0 20.Qe3 Nde5 21.0-0-0+-) 20.Qa3 Qh6 (20...Qg5 21.h4 Qf4 22.Rh3+-) 21.0-0-0 Qg6 (21...f6 22.Kb1 Qg6 23.Ka1+-) 22.d4 (22.Re1!? Rc8 23.Bc3 f6+-) 22...Rc8 23.Bc3 Nc4 (23...Qg3 24.Kc2 Ng6+-) 24.Re1 Kd8 25.Qe7 Kc7 26.Bc4 (26.Bc4 Kb8 27.Qd7 Rc4 28.Re8 Re8 29.Qe8 Rc8 30.Qe5 Ka7 31.d5 Qg2 32.Re1 Qh3 33.Kb2+-) 1-0. GuestNFPR – GuestNNNN, freechess.org, 2020.

7.Bc4 Nf6

8.0-0 0-0 9.d3 Bg4 10.Nbd2 Nbd7 11.c3 Bc5 (11...dc3!? 12.Bc3 Rc8=) 12.h3 Bh5 (12...dc3 13.Bc3 Bh5 14.Qc2=) 13.cd4 Bd4 14.Bd4 ed4 15.Nb3 Ne5 16.Nbd4 (16.g4 Nc4 17.dc4 Bg6 18.Qd4 Qc7+=) 16...Rc8 17.Rc1 (17.g4 Nc4 18.dc4 Bg6=) 17...Qa5 (17...Re8 18.Re1 Nf3 19.Nf3 Re1 20.Qe1 Bf3 21.gf3=) 18.g4 Nf3? (better 18...Nc4 19.dc4 Bg6+=) 19.Qf3+- (19.Nf3?! Bg6+/-) 19...Bg6 20.Qb7 Rfd8?? (20...Rc7 21.Qf3 Kh8+-) 21.Bf7! Bf7 22.Rc8 h6 (22...Rc8 23.Qc8 Ne8+-) 23.Nc6 Qb6 24.Rd8 Kh7 25.Qf7 Qc5 (25...Qb7 26.Qb7 h5 27.Qf7 Kh6 28.Rh8 Kg5 29.Qg7 Kh4 30.gh5 Kh3 31.Qg3) 26.Ne7 h5 (26...Qe7 27.Qe7 h5 28.g5 a5 29.gf6 Kg6 30.fg7 a4 31.g8Q Kf5 32.Rf8) 27.Qg6 1-0. DEFFM – GuestTLVV, freechess.org, 2020.

8.c3 dc3 9.Nc3 Bg4 (9...0-0 10.Qe2=) 10.Qe2 0-0 11.0-0 (11.Ne4 Bf3 12.Qf3 Ne4 13.Qe4 Nd7+=) 11...Re8 (11...Nbd7!?+=) 12.Ne4+/- Ne4 (12...a6 13.a4 (13.Nd6?! Qd6 14.ba6 Na6=) 13...Qe7 14.h3 Ne4 15.hg4+=) 13.Qe4+- Bf3 14.Qf3 (worse 14.gf3 Nd7 15.Qb7 e4+=) 14...Qc7 (14...Qe7!? 15.d3+-) 15.Bd5 Nd7? (better 15...e4 16.Be4 Nd7+-) 16.Bf7 Kh8 17.Rac1 Qb6 18.Be8 Re8 19.Qf7 Nf6 20.a4 Rf8 (20...h6 21.Rfe1+-) 21.Qe6 Ne4 (21...e4 22.Qf5 Qd8+-) 22.Rc8 h6 (22...Bb4 23.Qe5 Qg6+-) 23.Be5 Rc8 (23...Kh7 24.Bd6 Ng5+-) 24.Qh6 Kg8 25.Qg7 1-0. DEFFM – guestbcci, freechess.org, 2019.

8.c3 Bc5 9.cd4+/- Bd4 (9...ed4 10.Qe2 Qe7 11.Qe7 Ke7 12.0-0+/-) 10.Nd4 ed4 11.Qe2 Qe7 (11...Be6 12.0-0 0-0 13.Be6+/-) 12.Qe7 (12.Bd4 Be6 13.0-0 Bc4 14.Qc4 Nbd7+/-) 12...Ke7+/- 13.Bd4 (13.0-0 Be6 14.Re1 Nbd7+/-) 13...Rd8 (13...Be6 14.Na3+/-) 14.Bc5 Ke8 15.0-0 Be6 16.Re1 Nd5 (better 16...Nbd7!? 17.Bb4 Nf8+/-) 17.Nc3 Nc7 (17...Nf4 18.Ne4 Nd7 19.Ba3+-) 18.Ba7! Ra7 (18...Kd7 19.Be6 Ne6 20.Be3+-) 19.b6 Ra5 (19...Nc6 20.ba7 Na7+-) 20.bc7 Rc8 21.cb8Q Rb8 22.Be6 fe6 23.Re6 Kf7 24.Rae1 Rd5 1-0. GuestQJTG – GuestCQWT, freechess.org, 2020.

8.d3 0-0 9.Nbd2 Bg4 10.0-0 Nbd7 11.h3 Bh5 12.g4 Ng4 (12...Bg6!?=+) 13.hg4+= Bg4 14.Kg2 Qf6 (14...Rc8 15.Rh1+=) 15.Ne4+= Qg6 16.Nh4 (16.Nd6 Bh5 17.Kh1 Qd6-+) 16...Bd1? (better 16...Qe4!? 17.de4 Bd1 18.Rad1 Rac8+/-) 17.Ng6+- hg6 18.Rad1 Be7 19.c3 Nb6 (19...dc3 20.Bc3 Rac8 21.Rh1+-) 20.Bb3 (20.cd4 ed4 21.Bd4 Nc4 22.dc4 b6+-) 20...dc3 (20...Rad8 21.Rh1 Rd7 22.Rh2+-) 21.Bc3 Nd7 22.Rh1 Nf6 23.Be5 Ne4 (23...a6 24.b6 Rfd8 25.Rh3+-) 24.de4 Bf6 (24...Rad8 25.Bc7 Rd1 26.Rd1+- (26.Bd1?! Rc8 27.Bf4 Rc4+-)) 25.Rh3 Be5 (25...Rfd8 26.Rdh1 Kf8 27.Bf6 gf6+-) 26.Rdh1 (26.Rdh1 Bh2 27.R3h2 Rfd8 28.Rh8) 1-0. DEFFM – GuestLPHT, freechess.org, 2021.

6.ed4 ed4

7.Bc4 Qe7 8.Qe2 Nd7 (8...Qe2 9.Ke2 Nd7 10.Re1=) 9.0-0 Qe2 (9...Nb6 10.Re1 Nc4 11.Qc4=) 10.Be2 Ne7 11.c3 dc3 12.Nc3 0-0 13.Ne4 (13.Rfe1 Nf6+=) 13...Bf4 14.g3 Bh6 (14...Bc7 15.d4 cd4 16.Rac1+=) 15.Rfe1 Nd5 16.Nd6 a6 (16...Nb4 17.Rec1+= (worse 17.Nc8 Rfc8 18.Rab1 Nb6=)) 17.ba6 ba6 18.Nf5 (18.Rac1 Rb8 19.Ba3 Nb4 20.Bb4 Rb4 21.Nc8 Rc8 22.Ba6 Rd8+–) 18...Rb8 19.Ba3 Nb4 (19...Bb7 20.Rac1 Nb4 21.Bb4 cb4 22.Rc7+–) 20.Ne7 (20.Bb4 cb4 21.Ne7 Kh8 22.Nc8 Rfc8 23.Ba6 Rd8+–) 20...Kh8 21.Bb4 cb4 (21...Rb4 22.Nc8 Rc8 23.Ba6+–) 22.Nc8 Rfc8 23.Ba6 Rc2 24.Bd3 (24.d4 Kg8+–) 24...Rb2 25.Reb1 (25.Rab1 Rb1 26.Bb1 Kg8+–) 25...Rb1 26.Rb1 f6 27.Be4 Nc5 (27...Ne5 28.Rb2+–) 28.Bc2+– g6 29.Kg2 (29.d4 Na6+–) 29...Bg7 (29...f5 30.d4 Ne4 31.Be4 fe4 32.Ne5+–) 30.d4+– Ne6 31.Bb3 (31.d5 Nc5+–) 31...Ng5+– 32.Nd2 (better 32.Bc4+–) 32...Rd8? (better 32...f5!? 33.d5 Rd8+–) 33.h4+– Rd4 34.Rd1 (34.hg5?! Rd2 35.Bc4 fg5 36.Rb4 Bd4 37.Rb8 Kg7 38.Rb7 Kh6+=) 1–0. onur604 (2320) – Thomas_A_Anderson (2200), lichess.org, 2020.

7.Bc4 Qe7!? 8.Be2 Nf6+=.

7.Bc4 Nf6 8.Qe2 Qe7 9.Qe7 Be7 10.0-0 0-0 11.Ba3 b6 (11...Rd8!?=) 12.Nd4+/- Re8 13.Re1 Bb7 (13...a6 14.ba6 Na6 15.Nc6+/-) 14.Nf5 Kf8 15.Nc3 Nbd7 16.Bb2 g6 (16...a6 17.Bb3+-) 17.Nh6 Kg7 (17...Bd6 18.Nf7 (worse 18.Bf7 Re1 19.Re1 Bf4-/+) 18...Bf4 19.Ne2+-) 18.Nf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Bg4 8.0-0+/- Ne7? (8...Qf6 9.Bd5 Bh2 10.Kh1 Nd7 11.Qe1 Be5 12.Ne5 Ne5=) 9.Bf7!+- Kf8 (9...Kf7 10.Ng5 Double attack) 10.h3 (10.Bb3 Qc8 11.h3 Bh5+-) 10...Bd7 (better 10...Kf7 11.hg4 Ng6+-) 11.Ng5 g6 (11...Ng6 12.Ne6 Be6 13.Be6+-) 12.Qf3 Kg7 13.Qb7 Bb5 (13...Qb6 14.Qa8 Bf4+-) 14.Ne6 (14.Ne6 Kf7 15.Nd8 Rd8 16.Qb5+-) 1-0. GuestZBFW – GuestQMYL, freechess.org, 2019.

7.Bd3 Nf6 8.Qe2 (8.0-0 0-0+=) 8...Be6 (8...Qe7 9.Qe7 Ke7 10.0-0+=) 9.Ng5+= Qe7 10.Ne6 fe6 11.c3 (11.Na3 Nbd7 12.Nc4+=) 11...dc3 (11...Nbd7!?=) 12.Nc3+/- 0-0 13.Bc4 (better 13.0-0 Nbd7 14.Rae1+/-) 13...Nd5?? (better 13...Re8+=) 14.Nd5+- ed5 15.Qe7 (15.Bd5 Kh8 16.Qe7 Be7 17.Bb7 Nd7 18.Ba8 Ra8+-) 15...Be7 16.Bd5 (16.Bd5 Kh8 17.Bb7+-) 1-0. GuestTCRW – grnspn, freechess.org, 2020.

7.Be2 Nf6 8.0-0 0-0 9.c3 (9.Re1 Re8=) 9...d3 10.Bd3 Bh2! 11.Nh2 (11.Kh2 Qd3) 11...Qd3 12.a4 Nbd7 13.Re1 Re8 14.Na3 (14.Re8!? Ne8 15.Qf3+=) 14...Re1–+ 15.Qe1 c4 16.Qe7 Nb6 17.Re1 Be6 (17...Bd7 18.a5 Re8 19.ab6 Re7 20.Re7 ab6 21.Nf3–+) 18.Nf3 (18.Qb7 Qd2 19.Rb1 Bd5–+) 18...Qd7 (18...Bd5 19.Re3 Qg6 20.a5–/+) 19.Qb4 (19.Qd7 Nbd7 20.Nd4 Bd5=) 19...h6 20.a5 Nfd5 21.Ne5 Nb4 (21...Qd8 22.Qc5 Na4 23.Qd4 Nb2 24.Nac4 Nc4 25.Nc4–+) 22.Nd7 Nd3 (22...Nd7?! 23.cb4 Rd8 24.Bd4+=; 22...Bd7 23.cb4 Na4 24.Nc4=) 23.Re6 Nb2?? (23...fe6 24.ab6 Nb2 25.Ne5–/+) 24.ab6? (24.Rd6 Nc8 25.Rd4+/–) 24...fe6–/+ 25.Ne5 ab6 26.Nac4 Ra2 (26...Nc4!? 27.Nc4 Ra5–/+) 27.Nb6+= Na4 28.Na4 Ra4 29.c4 Ra1 30.Kh2 Ra2 31.Nf3 Rc2 32.d3 Rf2 33.Kg1 Ra2 34.Ne5 Kf8 35.d4 Rd2 36.Nf3 Rc2 37.c5 Ke7 38.Ne5 Rd2 39.Nf3 Rc2 (39...Rb2 40.b6–/+) 40.Ne5–+ g5 41.c6? (41.Kh2 h5–/+) 41...bc6 42.Nc6? (42.bc6 Kd6–+) 42...Rc6 (better is 42...Kd6–+) 43.bc6–/+ Kd6 44.c7 Kc7 45.Kf2 Kd6 46.Ke3? (46.g4–+) 46...Kd5 47.Kd3 h5 48.Ke3 h4 49.Kd3 g4 50.Ke3 h3 51.gh3 gh3 52.Kf3 Kd4 53.Kg3 Kd3 54.Kh3 e5 55.Kg3 e4 56.Kf2 Kd2 (56...Kd2 57.Kg3 e3–+) 0–1. Kelch,Henk (1750) – van Haastere,Rob (1705), The Netherlands, 2004.

5.e3 c6

6.a4 a6 (6...Nf6 7.Na3+=) 7.ed4 ed4 8.Bd4 ab5?? (better 8...Nf6+=) 9.Bg7+- Nf6 10.Bh8 Kd7 (10...ba4 11.Nc3 a3 12.Bc4 Qe7 13.Be2+-) 11.Bf6 Qf6 12.Nc3 Bb4 (12...Qe7 13.Qe2+-) 13.ab5 Ra1 14.Qa1 cb5 (14...Kd8 15.Bd3 cb5 16.0-0 Bc3 17.dc3+-) 15.Bb5 Nc6 (15...Kd8 16.0-0 Bc3 17.dc3+-) 16.Bc6 bc6 17.Qa7 Kd8 (17...Ke8 18.0-0 Bc3 19.Qa8+-) 18.Qb6 Ke8 19.Qb4 Bf5 20.0-0 Qg6 21.Re1 Kd7 22.Re7 Kd8 23.Ne5 Kc8 (23...c5 24.Qc5 Qg2 25.Kg2 Bh3 26.Kh3 h6 27.Nf7) 24.Qb7 (24.Qb7 Kd8 25.Qc7) 1-0. DEFFM – GuestVLLV, freechess.org, 2019.

6.ed4 ed4 7.Bd3 Qe7 8.Qe2 Qe2 9.Ke2 Nf6+/-.

6.ed4 ed4 7.Bd4 Nf6 8.Bd3 0-0 9.0-0 Bg4 (better 9...cb5 10.Nc3 b4 11.Bf6 gf6+/-) 10.Be2?? (10.h3 Bf3 11.Qf3 (worse 11.gf3 Nd5 12.f4 Nf4-/+) 11...Bh2 12.Kh2 Qd4 13.Nc3+/-) 10...Bf3=+ 11.Bf3 (11.gf3 Nd5 12.Be3 Qh4-+) 11...Bh2 12.Kh2 Qd4 13.bc6 (13.c3!? Qe5 14.Kg1 Qb5 15.d4=+) 13...Nc6-/+ (13...Qa1?? 14.cb7 Nc6 15.ba8Q (15.ba8N?! Qe5 16.Kg1 Qd6+/-; 15.Bc6?! Rad8+/-) 15...Ra8 16.Bc6+-) 14.c3 Qh4 15.Kg1 Ne5 16.g3 (16.Bb7 Neg4 17.Re1 Rae8 18.Re3 Qf2 19.Kh1 Re3 20.de3 Qg3 21.Kg1 Qe3 22.Kh1 Nf2 23.Kg1 Nd1 24.Kh1 Ng4 25.g3 Qg3 26.Nd2 Qh2) 16...Nf3 (16...Qh3 17.Bg2 (17.Bb7?? Nfg4 18.Qg4 Ng4 19.Re1 Qh2 20.Kf1 Qf2) 17...Qh6 18.Re1-/+ (18.Bb7?? Nfg4 19.Qg4 Ng4-+)) 17.Qf3=+ Qh3 18.Qb7 h5 (18...Rab8 19.Qg2 (19.Qa7 Ng4 20.Re1 Rbe8 21.Re4 Re4 22.Qe3 Qh2 23.Kf1 Re3 24.de3 Qf2) 19...Qf5 20.Na3=+) 19.Qg2 (19.Re1 Qf5 20.Na3 h4=) 19...Qg4 (19...Qf5 20.Na3=+) 20.a4 h4 (20...Rab8 21.Na3=+) 21.f3 Qc4 22.gh4 Qh4 23.d4 (23.Na3 Qa4 24.Rfb1 a5=) 23...Rfe8 (23...Nd5 24.Qh2 Qg5 25.Kh1-/+) 24.Qh2 (24.Qf2 Qg5 25.Qg2 Qf5-/+) 24...Qg5-/+ 25.Qg2 Qd5 (25...Qh6 26.Nd2=+) 26.Na3 (26.Nd2 Rad8=) 26...Qb3 (26...Rac8!?=+) 27.Nb5= Rec8 28.f4 a6 (28...Qd5 29.Rae1=) 29.Nd6+= Rc3?? (better 29...Qc3 30.Nc8 Rc8+= (worse 30...Qd4 31.Qf2 Qf2 32.Kf2 Rc8 33.Rac1+/-)) 30.Qa8+- Kh7 31.Ne4 Ng4 (31...Rd3 32.Rac1 Re3 33.Nf6 gf6 34.Kf2+-) 32.Ng5 (better 32.Nc3 Qc3 33.Qe4 Kg8+-) 32...Kg6 33.Qe4 (33.Qa6?! f6 34.Nf3 Rf3 35.Rf3 Qf3+=) 33...Kh6 (33...f5 34.Qe8 Kh6+-) 34.Qh7 1-0. GuestCSGX – GuestRCWY, freechess.org, 2019.

6.ed4 ed4 7.Nd4 Qf6 8.Nf5! Qb2 (8...Bf5 9.Bf6 Discovered attack; 8...Qf5 9.Bg7 Combination) 9.Nd6 Kd7 10.Nf7 Qa1 11.Nh8 (11.Nc3!? Qd1 12.Kd1+-) 11...Qa2+/- 12.Qg4 Kd8 13.Qd4 Nd7 14.Nc3 Qa1? (better 14...Qe6!? 15.Kd1 Qf6 16.Qf6 Ngf6 17.Nf7 Ke7+/-) 15.Ke2+- Ngf6 16.Qe3 Qb2?? (16...Kc7 17.Nf7 Nd5 18.b6 N7b6 19.Qe5 Kd7+-) 17.Nf7 Kc7 18.Qf4 Kb6 (18...Ne5 19.Qe5 Kd7+-) 19.Na4 Ka5 20.Nb2 Nd5 21.Nc4 Kb5 22.Nfd6 Kc5 (22...Kb4 23.Qg3 Nf4 24.Kd1 Nd3 25.Qd3 Kc5 26.c3 Ne5 27.Qd4) 23.d4 Kb4 24.Qc1 Nc3 25.Ke1 b5 (25...Nb5 26.Qb2 Ka4 27.Qb3) 26.Qa3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.ed4 e4 7.Ne5 (7.Qe2+/-) 7...Be5? (7...Nf6 8.Na3 0-0+=) 8.de5+- cb5 (8...Ne7 9.Nc3 Qd4 10.Qe2 Qe5 11.0-0-0+-) 9.Bb5 Bd7? (9...Nc6 10.Nc3 Nge7 11.Bc6 Nc6 12.Ne4 0-0+-) 10.e6! fe6 (10...Bb5 11.Qh5 Qc7 12.Na3+-) 11.Bg7 Bb5 (11...Qg5 12.Bd7 Nd7 13.Bh8 Ne7+-) 12.Qh5 Kd7 (12...Ke7 13.Qg5 Ke8 14.Qb5 Qd7 15.Qb2+-) 13.Qb5 Nc6 (13...Kc8 14.Bh8 Ne7 15.Bf6+-) 14.Qb7 (14.Qb7 Ke8 15.Qc6 Kf7 16.Bh8+-) 1-0. DEFFM – kklosgflp, freechess.org, 2019.

5.e3 Bd7

6.Bc4 c6 (better 6...Qe7 7.0-0 de3 8.fe3 Nf6+=) 7.Ne5?? (better 7.ed4 ed4 8.Qe2 Qe7 9.Bd4 Qe2 10.Be2+/-) 7...Be5-+ 8.Qh5 Qf6 (8...Qe7!? 9.Bf7 Kf8 10.f4-+) 9.f4-/+ Bd6 10.Bd4 Qg6 11.Qg6 hg6 (11...fg6?? 12.Bg7 cb5 13.Bb3+- (13.Bh8?! bc4 14.Nc3 Bc6=)) 12.Nc3 g5 (better 12...Nf6!? 13.Rb1 b6-/+) 13.Ne4 (13.Bg7 Rh7 14.Be5 Be5 15.fe5 cb5 16.Bb5 a6=) 13...Be7= 14.fg5 cb5 15.Bb3 (15.Bd5 Bc6 16.Bc6 Nc6 17.Bg7 Rh4=+) 15...Nc6 (15...Bc6!? 16.Nf2 f6=+) 16.0-0 Nd4 17.Bf7 Kd8 18.ed4 Bc6?? (better 18...Kc7=) 19.d5+- Bc5 (19...Bd7 20.d6 Rc8+-) 20.Nc5 Bd7 (20...Ne7 21.dc6 Nc6 22.Ne6 Kd7 23.Ng7+-) 21.Rae1 Kc7 (21...b6 22.Be6 Bc8 23.Bc8 Rc8 24.Nb7 Kc7 25.Rf7 Kb8 26.Nd6+-) 22.Bg8 Rhg8 (22...b6 23.Nd7 Rhg8 24.Rf7+-) 23.Rf7 Rad8 (23...Kd6 24.Nb7 Kc7 25.Nc5+-) 24.Ree7 Kd6 (24...b4 25.Rd7 Rd7 26.Rd7 Kb6 27.d4+-) 25.Nb7 Kd5 26.Nd8 Bg4 27.Nb7 Bd1 28.Rd7 Kc4 (28...Ke5 29.Nc5 Bc2 30.d4) 29.Rf4 1-0. DEFFM – GuestRCCH, freechess.org, 2019.

6.ed4 e4 7.Ne5 Be5 8.de5 Qe7 9.d4 (9.Qe2 f5+-) 9...ed3 (9...a6 10.c4+-) 10.Bd3 c6 11.a4 f6 (11...Nh6 12.0-0 0-0 13.Nc3 Qe5 14.Re1+-) 12.0-0 fe5 (12...Be6 13.Qh5 Bf7 14.Qg4+-) 13.Qh5 (better 13.Re1 Qf7 14.Re5 Ne7+-) 13...g6 (13...Kd8 14.Nd2+-) 14.Bg6! Kd8 (14...hg6 15.Qh8 Pinning (15.Qh8 Deflection)) 15.Rd1 (15.Qe5!? Qe5 16.Be5 hg6 17.bc6 Nc6 18.Bh8 Ke7+-) 15...Nf6 16.Qe5 hg6 (16...Qe5 17.Be5 Ke7+-) 17.Qf6 Rf8 (17...Re8 18.Qc3 (18.Qg6?? Qe1 19.Re1 Re1) 18...a5 19.bc6 bc6 20.Nd2+-) 18.Qe7 Ke7 19.Ba3 Ke8 20.Re1 (20.Bf8 Kf8 21.Nc3 Kf7+-) 20...Kf7 21.Bf8 Kf8 22.Nc3 cb5 (22...a6 23.f3 Bf5 24.Rad1 ab5 25.Rd8 Kf7 26.Rde8+-) 23.ab5 Bf5 24.Nd5 Nd7 25.Ra4 (25.g4 Bg4 26.Ra4 Bf5+-) 25...Bc2 (25...Rd8 26.Rh4 Kg8 27.g4 Bc2 28.Re7+-) 26.Rf4 (better 26.Rh4 Kg8 27.Re7+-) 26...Kg7 (26...Kg8 27.Re7 Nb6 28.Nf6 Kf8 29.Rb7 Rd8+-) 27.Re7 Kh6 28.Rh4 Kg5 29.g3 Rf8 30.f4 Rf4 31.Rf4 Nc5 (31...Bf5 32.Rh7 Bh3 33.Rh3 Ne5 34.Rh7 Nf3 35.Rf3 a5 36.Rf4 a4 37.h4) 32.Rh7 (32.Rh7 a5 33.h4) 1-0. DEFFM – GuestKPQW, freechess.org, 2019.

6.ed4 ed4 7.Nd4 Nf6 8.Bd3 (8.Qe2 Kf8+/-) 8...Bg4 (better 8...0-0!? 9.0-0 Be5+=) 9.f3+- Bh5 (9...Qe7 10.Qe2 Qe2 11.Be2+/-) 10.Qe2 Qe7 11.Qe7 Be7 12.Nf5 Bc5?? (better 12...Bg6+-) 13.Ng7 Kd7 14.Bf5 Kd8 (14...Ke7 15.Nh5 Nh5 16.Bh8+-) 15.Bf6 Be7 16.Nh5 Bf6 17.Nf6 Nd7 1-0. GuestMGWM – GuestJNJS, freechess.org, 2019.

6.ed4 ed4 7.Bd4 f6 8.Bc4 Qe7 9.Be3 Be5?! (9...a6 10.b6! Be6+-) 10.Ne5 Qe5 11.d4 (11.Nc3 Be6 12.f4 Qf5+-) 11...Qe7 (11...Qf5 12.Nc3 a6 13.a4+-) 12.Qh5 (12.0-0 Be6 13.d5 Bf5+-) 12...g6 (12...Kf8 13.0-0 Be6 14.Bc1 Bc4 15.Ba3 Bf1 16.Kf1+-) 13.Qf3 c6 14.0-0 cb5 (14...Be6 15.bc6 Nc6 16.Be6 Qe6 17.d5+-) 15.Qb7 bc4 (15...Bc6 16.Qc8 Qd8 17.Bf7 Ke7 18.Qe6 Kf8 19.Bg8 Rg8 20.Bh6 Rg7 21.Nc3+-) 16.Qa8 Qd8 17.Qa7 Ne7 18.Nd2 (better 18.Nc3 Nbc6 19.Qc5 0-0+-) 18...Nf5 (18...Be6 19.Nc4! 0-0 20.Na5+-) 19.Nc4 (19.d5 0-0 20.Bc5 Re8+-) 19...Ne3 (19...0-0 20.Rab1 Bc6 21.Qc5+-) 20.Ne3 Nc6 21.Qc5 Qe7 22.Qd5 (22.Qc4 Qf7 23.d5 Ne5+-) 22...Nb4 (22...Qf7 23.Rab1 Qd5 24.Nd5+-) 23.Qc4 Bf5 (23...Nc6+-) 24.Nf5 gf5 25.Rfe1 Qe1 26.Re1 Kd7 (26...Kf8 27.Qc8 Kg7 28.Re7 Kh6 29.Qh8 Kh5 30.Qh7 Kg5 31.Rg7 Kf4 32.Qh4) 27.Qb4 Rc8 (27...Re8 28.Qb5 Kc7 29.Re8 Kd6 30.d5 f4 31.Qc6) 28.Re7 Kd8 (28...Kc6 29.Qc5) 29.Qd6 1-0. DEFFM – GuestCQQD, freechess.org, 2019.

6.ed4 e4 7.Ne5 Be5 8.de5 Bf5 9.g4 Bg6 10.Qe2+-.

6.ed4 e4 7.Ne5 Be5 8.de5+- Qg5 9.Qe2 Ne7 10.Qe4 c6 11.f4 Qg4 (11...Qg6 12.Nc3 0-0 13.Qg6 Ng6 14.g3+-) 12.Ba3 (better 12.Nc3 Bf5 13.Qe3+-) 12...Qh4? (12...Bf5 13.Qd4 Nd5 14.bc6 bc6+-) 13.g3 Qh5 (13...Qh6 14.Nc3+-) 14.Nc3 Nf5 (14...a5 15.Bg2+-) 15.Be2 Qg6 (15...Qh3 16.0-0-0 a6 17.b6+-) 16.d4 (better 16.g4 Nh4 17.f5+-) 16...Nd4 (16...Ne7+-) 17.Qd4 Qc2 (17...a6 18.Qc5 Qe6 19.Ne4 ab5 20.Nd6 Qd6 21.Qd6+-) 18.e6! Be6 (18...Be6 19.Qg7 Discovered attack (19.Qg7 Deflection); 18...fe6 19.Qg7 Discovered attack) 19.Qg7 Rf8 20.Qf8 (20.Qf8 Kd7 21.0-0 Qe2 22.Rad1 Bd5 23.Nd5 Qh2 24.Kh2 cd5 25.Rd5 Kc7 26.Qd8) 1-0. DEFFM – GuestNMKH, freechess.org, 2019.

6.ed4 e4 7.Ne5 Be5 8.de5+- Nh6 9.Nc3 Bf5 10.Qe2+-.

6.ed4 e4 7.Ne5 Nf6!?+/-.

5.e3 de3

6.d3 ef2-/+ 7.Kf2 Bg4 (7...Nf6 8.Qe2-/+) 8.Nbd2 (8.Qe1 f6=+) 8...Nf6 (8...Bc5 9.Kg3 Ne7 10.h3 Nf5 11.Kh2-/+) 9.h3 Bf3 10.Qf3 c6 11.Nc4 (11.d4 0-0-/+) 11...Bc5 (11...0-0 12.Re1 Re8 13.Be5 Be5 14.Re5 Re5 15.Ne5 Qb6 16.Qe3 Qb5 17.d4-/+) 12.Kg3 0-0 (12...Bd4 13.Bd4 Qd4 14.Re1-/+) 13.Re1 (13.Be5 Nbd7 14.d4 Ne5 15.de5 cb5 16.ef6 bc4-/+) 13...e4 (13...Nd5!?-/+) 14.de4= cb5 15.Bf6 Qf6 (15...gf6 16.Ne3 Nc6 17.Nf5 (worse 17.Bb5 Nd4 18.Qh5 Qd6 19.e5 Qe5 20.Qe5 fe5-+) 17...Qc7 18.Kh4=+) 16.Qf6 gf6 17.Ne3 Nc6 (17...b4!?=) 18.Bb5+= Nd4 (18...Rad8 19.Bc6 bc6 20.Re2+=) 19.Bd3 Kh8 (19...Bd6 20.Kf2+=) 20.Rhf1+/- Ne6 (20...Rg8 21.Kh4+/-) 21.Rf6 Bd6 22.Kf2 Rg8 (22...Be5 23.Rf5 f6 24.Rb1+/-) 23.Rb1 (23.Nf5 Bc5 24.Kf1 Raf8+-) 23...Bg3 (23...Kg7 24.e5 Be5 25.Rf5+-) 24.Kf1 b6 (24...Nd8 25.Rb5+-) 25.Rf7 Rgf8 (25...Raf8 26.Rf8 Rf8 27.Nf5+-) 26.Rf8 Rf8 27.Nf5 Nc5 (27...Nd4 28.Rb4 Nf5 29.ef5+-) 28.Ke2 Be5 (28...Na4 29.Rb3 (29.Ng3?! Nc3 30.Ke3 Nb1+/-) 29...Be5 30.Ke3+-) 29.g4 (29.Ke3 h6+-) 29...Na4 30.Rb3 Nc5 (30...Rd8 31.Ra3 Nc3 32.Kf3+-) 31.Rb5 Rc8 (31...Re8 32.Ke3+-) 32.Ke3 Rd8 33.g5 Na4?? (33...Bh2+-) 34.Re5 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.de3 b6? 7.Ne5+– Be5 8.Be5 (8.Qd8 Kd8 9.Be5 Nf6+–) 8...Qd1 9.Kd1 Ne7 10.Bg7 Rg8 11.Bb2 Nd7 12.a4 Nc5 13.Nd2 Bf5 (13...Be6 14.a5+–) 14.a5 ba5 (better 14...0-0-0 15.ab6 ab6+–) 15.Ra5 c6 (15...Rd8 16.Bd4 Ne6 17.Ba7 Be4+–) 16.b6! a6 (16...ab6 17.Ra8 Pinning (17.Ra8 Deflection)) 17.Rc5 Rb8 18.Nc4 h5 (18...Kd7 19.Ra5+–) 19.Nd6 Kd7 20.Nf5 Nf5 21.Rf5 Rb6 22.Bd4 Rb1 23.Kd2 h4 24.Rf7 Kd6 25.Rf6 Kd5 26.c4 Ke4 27.Rf4 (27.Bd3) 1–0. Silent Move (2115) – lstcyr, redhotpawn.com (1), 2016.

6.de3 Be6 7.Be5 Bg4?? (better 7...Nf6+/-) 8.Bg7+- Bb4 (8...Nf6 9.Bh8 Nbd7 10.h3+-) 9.c3 Qd1 10.Kd1 Bc3 (10...Bd6 11.Bh8 Nd7 12.Bd4+-) 11.Nc3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.de3 Be6 7.Ne5 Be5 8.Qd8+- Kd8 9.Be5 Nd7?? (better 9...f6 10.Bg3 Ne7+-) 10.Bg7 f6 11.Bh8 c6 (11...Ke7 12.g4! Ne5 13.Bd3+-) 12.bc6 bc6 13.Bd3 (13.Nd2 Ke7 14.g4 Nh6+-) 13...Kc7 (13...Ke7 14.g4 Kf7 15.g5 fg5 16.Bh7+-) 14.Bg7 Re8 (14...Ne7 15.Bh6 Nd5 16.a3+-) 15.Bh7 Re7 (15...Ne7 16.Bh6+-) 16.Bg8 Bg8 17.Bh6 Rh7 (17...Nb6 18.Nc3+-) 18.Bf4 Kb7 (18...Ne5 19.Nc3 Bd5 20.f3+-) 19.Nc3 Nc5 (19...Nb6 20.Ne4 f5 21.Nd6 Ka6 22.Nf5+-) 20.Bd6 (20.0-0 Ka6+-) 20...Na6 (20...Ne6 21.Rb1 Ka6 22.0-0+-) 21.Rb1 Kc8 22.0-0 Kd7 (22...Be6 23.Rfd1 c5 24.Nd5+-) 23.Rfd1 Ke6 24.Bf4 Nb4 25.Rd6 Kf7 26.Rb4 Kg6 27.Be5 (27.Be5 Be6 28.Re6 Rf7 29.Rc6 a5 30.Rf4 Kh7 31.Bf6 Rd7 32.Rh4 Kg6 33.Be5 Kf7 34.Rh7 Ke8 35.Rc8 Rd8 36.Nd5 Rc8 37.Nf6 Kf8 38.Bd6) 1-0. DEFFM – GuestBRJC, freechess.org, 2019.

6.de3 Bf5 7.Be5+/- Be5 8.Qd8 Kd8 9.Ne5 Ke7 10.c4 (10.Nc3 Nf6+/-) 10...f6 (10...Nf6 11.Nc3+/-) 11.Nd3 Nd7 12.Nc3 c6 13.Nb4 c5 (13...Rc8 14.bc6 bc6 15.e4+/-) 14.Nbd5+- Kf7 15.e4 Be6 16.f4 Nb6 (16...Ne7 17.Be2 h5 18.Kf2+-) 17.a4 g6 (17...Ne7 18.a5 Nd7 19.Bd3+-) 18.a5 Nd7 19.Bd3 Ne7 (19...Rd8 20.0-0+-) 20.0-0 f5 (20...Rad8 21.Rae1+-) 21.Rfe1 b6 (21...fe4 22.Ne4 Nd5 23.Ng5 Kg8 24.Ne6 N5f6+-) 22.Ne7 Ke7 (22...Rae8 23.Nc6 Rhf8 24.ab6 ab6 25.Ra7+-) 23.ef5 gf5 (23...ba5 24.Nd5 Kf8 25.Re6+-) 24.Bf5 Nf8 (24...ba5 25.Be6 Rhe8 26.Bf5 Kf8 27.Re8 Ke8 28.Re1 Kf8 29.Bd7+-) 25.ab6 (25.ab6 Kf6 26.Be6 Ne6 27.Nd5 Kg7 28.ba7+-) 1-0. DEFFM – GuestCCJN, freechess.org, 2019.

6.de3 Qf6 7.Nbd2 Bg4 8.Ne4+= Qg6 9.Nd6 (9.Qd5 Nd7 10.Qb7 Rb8+/-) 9...cd6+= (9...Qd6? 10.Be5 Qe5 11.Ne5 Bd1 12.Rd1+-) 10.h3 Bf5 (better 10...Bd7!?+=) 11.Nh4+- Bc2?? (better 11...Qf6 12.Nf5 Qf5 13.Qd6 Nd7+-) 12.Ng6 Bd1 13.Nh8 (13.Kd1?! hg6 14.Rc1 Nd7=; 13.Rd1?! hg6 14.Rd6 Nd7+/-) 13...Bc2 (13...Ba4 14.Ba3 Ke7 15.Nf7 Kf7 16.Bc4 Kf8 17.Bd6 Ne7 18.Bd5+-) 14.Rc1 Bf5 15.Bc4 Nh6 16.Ba3 Nd7 (16...Ke7 17.Rd1 Nd7 18.Rd6 Rh8 19.Rh6 Ke8 20.Rd6+-) 17.Bd6 Nb6 18.Bb3 Kd7 (18...f6 19.Rc7 Rc8 20.Re7 Kd8 21.0-0+-) 19.Be5 Rh8 20.Bg7 Rg8 21.Bh6 Rg2 22.Bf4 Be4 23.Rc7 Kd8 24.Rf7 Rg6 25.Rf1 Rd6 (25...Bd3+-) 26.Bd6 a6 27.Be6 ab5 (27...Bc6 28.bc6 Nd7 29.Rd7 Ke8 30.Bf7) 28.Rf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.fe3 Nd7 7.Be2 Ngf6 8.0-0 0-0 9.c4 b6 10.d3 (10.Nc3 a6=) 10...Bb7 (better is 10...a6=) 11.Nbd2 (11.Qc2 a6=) 11...h6 (better is 11...Ng4!? 12.Qc1 Ne3–/+) 12.Nh4 e4 (12...Nd5 13.cd5 Qh4 14.e4=) 13.d4 Nd5 (13...a6!?+=) 14.Nf5+/– (worse is 14.cd5 Qh4 15.g3 Qg5–/+; 14.Ne4?? Bh2! (14...Qh4?! 15.Nd6 Ne3 16.Qd3–+) 15.Kh2 Qh4 16.Kg1 Ne3–+ (16...Qe4?! 17.cd5 Qe3 18.Rf2–+)) 14...Nb4? (better is 14...N5f6+/–) 15.d5+– Be5 16.Be5 Ne5 17.Ne4 a5 (17...Kh8 18.Qe1 Nd5 19.Qg3+–) 18.a3 Nc4 (18...Nd5 19.cd5 Re8+–) 19.Bc4 Nd5 20.Qg4 g6 21.Nh6 Kh7 22.Nf7 Rf7 23.Rf7 Kh8 24.Qg6 (24.Qg6 Qg8 25.Qh5 Qh7 26.Qh7; 24.Qh3 Qh4 25.Qh4 Kg8 26.Qh7) 1–0. Janek – bitsky, internet, 2017.

6.fe3 Nd7 7.Be2 Ngf6 8.0-0 e4 9.Nd4 0-0 10.c4 a6 (10...Re8 11.Qc2+=) 11.Nc3 (11.Qc2 Be5+=) 11...Be5 (11...ab5 12.cb5 Nc5 13.Nf5 Bf5 14.Rf5+=) 12.Nb3 (12.ba6 Ra6 13.d3 ed3 14.Bd3 Nc5–/+) 12...Nb6 (12...ab5 13.cb5 Re8 14.Qc2+=) 13.Qc2 (13.ba6 ba6 (worse is 13...Ra6 14.c5+/–) 14.Rb1 Be6=) 13...Re8 (13...ab5 14.cb5 Re8 15.Rad1+=) 14.Rad1 (14.c5 Nbd7=) 14...ab5+= 15.cb5 Nfd5 (better is 15...Qd6 16.h3 Be6+=) 16.d4?? (16.Nd5 Qd5 17.Be5 Qe5= (17...Re5? 18.Qc7 Bd7 19.Qb6+–)) 16...ed3?? (better is 16...Ne3 17.de5 Nc2 18.Rd8 Rd8–+) 17.Rd3? (17.Bd3 Qh4 18.g3 Qh6 19.Nd5 Nd5 20.Be5 Qe3 21.Rf2 Qe5+=) 17...c6 (17...Qh4!? 18.g3 Bg3 19.hg3 Qg3 20.Kh1 Re6–+) 18.e4 (18.bc6!? bc6 19.Nd5 cd5 20.Be5 Re5 21.Rc3+=) 18...Qh4–/+ 19.Rh3?? (better is 19.g3 Nb4 20.Qb1–/+) 19...Bh3–+ 20.ed5 (20.Nd5 Ra2 21.bc6 Rb2 22.Qb2 Bb2 23.Nb6 Qe4 24.Rf2–+) 20...Bf5! 21.g3?? (21.Qf5 Qh2 Double attack; 21.Rf5 Qh2 Double attack) 21...Qd4! 22.Rf2 (22.Nd4 Bd4 Decoy (22...Bc2 Zwischenzug)) 22...Bc2 (22...Bc2 23.Nd4 Bd4 24.bc6 bc6 25.dc6 Na4 26.Na4 Bf2 27.Kf2 Ba4–+) 0–1. GuestLGTH – FuManChuJT, freechess.org, 2016.

6.fe3 Qe7 7.Be2 (7.Nc3 Nf6=) 7...Nf6= 8.0-0 0-0 (8...Nbd7=) 9.c4 (9.Nc3 Nbd7=) 9...b6 (9...e4 10.c5 Bc5 11.Nh4=+) 10.d3 (10.Nc3 Nbd7=) 10...Bb7 (10...Nbd7 11.Nc3=+) 11.Nfd2 (11.Nc3 Nbd7=+) 11...Nbd7 12.Bf3 (12.Qe1 Bb4=+) 12...Bf3 13.Qf3 (13.Rf3 Nc5 14.Qc2 e4 15.de4 Nfe4=+) 13...Nc5-/+ 14.d4 e4 15.Qf5 Nd3 16.Bc3 Rac8 (better 16...Rfe8!?-/+) 17.d5= Rfe8 (17...Be5 18.Be5 (18.Ne4?? Ne4 19.Be5 Qe5-+) 18...Qe5 19.Qe5 Ne5 20.h3=) 18.Bf6+= Qf6 19.Qf6 gf6 20.Nc3 Be5 (20...Nc5 21.Rad1+= (21.Rf6? Be5 22.Rf2 Bc3-+)) 21.Nde4 Bc3 22.Nc3 Re3 23.Rf6 Nb2 (23...Rce8 24.d6 cd6 25.Raf1=) 24.Nd1 (24.Rc1 Nc4 25.Rf4 Nd6+=) 24...Re1 25.Rf1 Rf1 26.Kf1 Nc4 27.Ke2 Nd6 28.Nc3 Re8 29.Kd3 Kg7 30.Rf1 f5 31.Rf4 Kg6 32.Ra4 ½-½. PIERRE – Dorschmann, internet, 2019.

6.fe3 Nf6 7.Ne5 0-0 8.Be2 Re8 9.Nc4 Ne4 (9...Nbd7!?+/-) 10.0-0+- Bh2 (better 10...Nd7+-) 11.Kh2 Qh4 12.Kg1 Ng3 13.d3 Qh1 14.Kf2 Qh4 15.Nbd2 Nf5 (15...Nf1 16.Kf1 Nd7+-) 16.Kg1 Ne3 (16...Ng3 17.Rf3+-) 17.Ne3 Re3 18.Ne4 Bh3 (18...f5 19.Ba3 Be6+-) 19.Qd2 (19.gh3?! Rg3 20.Ng3 Qg3 21.Kh1 Qh3 22.Kg1 Qg3 23.Kh1 Qh3 24.Kg1 Qg3 25.Kh1 Qh3=) 19...Qh6 20.gh3 Qh3 (20...Rh3 21.Qh6 Rh6+- (21...gh6?? 22.Nf6 Kg7 23.Ne8 Kg8 24.Nc7+-)) 21.Rf2 f5 22.Rg2 fe4 23.Rg7 Kf8 24.Qb4 c5 25.bc6 Ke8 26.Qe7 1-0. Gu62 - Gu91, free online chess, 2018.

6.fe3 Bg4 7.Be2 Bf3 8.Bf3 c6 9.a4 Nf6 10.0-0 0-0 11.Nc3 Qc7 (11...e4 12.Be4 Ne4 13.Ne4 Bh2 14.Kh2 Qh4 15.Kg1 Qe4 16.Rf4+=) 12.a5 (12.bc6 bc6 13.Ne4 Ne4 14.Be4 Nd7+=) 12...Nbd7 (12...Bb4 13.a6+=) 13.a6+/– ba6 14.Bc6 Rab8 (14...Rac8 15.Bd7 Qd7 16.Ra6+/–) 15.Ra6 Nb6 (15...e4!?+/–) 16.Qa1 Nc4 (16...Nc8 17.Qa4+–) 17.Ra7 Qd8 (17...Qc8 18.Bc1 Bc5 19.Ra4+–) 18.Nd5 Nb2 (18...Ng4 19.h3 Nh6 20.d3 Ne3 21.Ne3+–) 19.Nf6 (19.Qb2?! Nd5 20.Rd7 Qa5 21.Rd6 Ne7+–) 19...gf6 20.Qb2 Qc8 (20...f5 21.Rf5 Qh4 22.Qb3+–) 21.Qb3 (worse is 21.Rf6 Qc6 22.bc6 Rb2 23.Rd6 Rc2+–) 21...Kh8 (21...Bc7+–) 22.Rf6 Qg4 (22...Bc5 23.Rd7 Ra8+–) 23.Rff7 (better is 23.Qd5 Bb4 24.c3+–) 23...Qd1 24.Kf2 Qd2 25.Kg3 e4 (25...Rf7 26.Rf7 (26.Qf7?! Qe3 27.Bf3 e4 28.Kh3 Qh6 29.Bh5 Rf8+/–) 26...Rg8 27.Kh3+–) 26.Kh3 (26.Kh4 Qe1 27.g3 Bg3 28.Kh3 Qf1 29.Rf1 Rf6 30.Qc3 h6 31.Qf6 Kg8 32.Bd5) 26...Qe2 (26...Rf7 27.Rf7 Be5 28.Be4 Bg7+–) 27.Rh7 1–0. DEFFM – ISAACO, freechess.org, 2018.

6.Ne5 ef2 7.Kf2 Nf6–/+.

6.de3 Bb4

7.Nc3 Bc3 8.Bc3+/- Qd1 9.Rd1 Nf6 (better 9...f6!?+/-) 10.Be5+- Nbd7 (10...Be6 11.Bc7 Nbd7 12.Nd4+-) 11.Bc7 b6 (11...0-0 12.Rd4+-) 12.Bc4 Bb7 (12...h6 13.0-0 0-0 14.Rd4+-) 13.Ne5 (better 13.Ng5 0-0 14.Bd6+-) 13...Nc5?? (13...Ne5 14.Be5 0-0+-) 14.Bf7 Ke7 15.Bd6 Kd8 16.Bc5 Kc7 17.Bd6 Kc8 18.Be6 Kd8 19.Nf7 (19.Nf7 Ke8 20.Nh8+-) 1-0. GuestZLYS – huudat, freechess.org, 2020.

7.Nc3 Qd1 8.Rd1 f6 9.Bc4 Ne7 10.0-0 (10.Ke2 Bf5+=) 10...Bc3 11.Bc3 b6? (11...a6!?+/-) 12.Ne5! fe5 (12...fe5 13.Be5 Double attack) 13.Be5 c6 (13...Rf8 14.Bc7 Nd7 15.Rd4+-) 14.Bg7 Rf8?? (better 14...Rg8 15.Bg8 Ng8+-) 15.Bf8 1-0. DEFFM – GuestJXVG, freechess.org, 2019.

7.Nbd2 Bd2 8.Qd2 Qd2 9.Nd2 (9.Kd2 f6+/-) 9...f6 10.Bc4 (10.f4 ef4 11.ef4 Ne7+/-) 10...Ne7 11.Rd1 (11.0-0-0+/-) 11...c6 (11...a6!?+=) 12.Ne4+/- cb5 13.Nd6 Kd7?? (better 13...Kd8 14.Nb5 Bd7+/-) 14.Nb5+- (14.Bb5?! Kc7+/-; 14.Nc8?! Kc8 15.Bb5 Nbc6+=) 14...Kc6 15.Ba3 a6 (15...Nf5 16.g4 Be6 17.Be6 Ne3 18.fe3 Kb5+-) 16.Rd6 (16.Be7?! ab5 17.Bf7 Kb6 18.Bd8 Ka7+=) 1-0. GuestRQYK – GuestHCTD, freechess.org, 2020.

7.Nbd2 e4? 8.Bg7 ef3 9.gf3 Be6 10.Bh8 Nd7 (10...Nf6 11.Rc1+-) 11.c3 Ba5 (11...Ba3 12.Nc4 Bc5 13.Bd3+-) 12.Qa4 b6 (12...Bb6 13.Qe4+-) 13.Rg1 Ngf6 14.Ne4 Qe7 (14...Ne4 15.Qe4 Ke7 16.Qh4 Kf8 17.Qh7 Ke7+-) 15.Bf6 Nf6 (15...Qf8+-) 16.Nf6 Qf6 17.Rg8 Ke7 18.Qa3 (18.Ra8?? Qc3 19.Kd1 Qd2) 18...c5 (18...Bb4 19.Qb4 Kd7 20.Rd1 Qd4 21.Rd4 Bd5 22.Bh3 f5 23.Bf5) 19.bc6 (19.Ra8 Bc3 20.Kd1 Qf3 21.Kc1 Ba1 22.Ra7 Kf6+/-) 19...Bb4 20.Qb4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nbd2 e4? 8.Bg7+- ef3 9.gf3 Nf6 10.Bh8 Bc3 (10...Be6 11.Rc1 Bc3 12.Qe2+-) 11.a4 Ba1 (11...Qe7 12.Rg1 Nbd7+-) 12.Qa1 Nbd7 13.Rg1 b6 (13...c5+-) 14.Ne4 Ke7 (14...Ne4 15.Rg8 Nf8 16.fe4 Qd6+-) 15.Bf6 Nf6 (15...Kf8 16.Bd8 f6 17.Qa2 Ke8 18.Qg8 Nf8 19.Nf6 Kd8 20.Qf8) 16.Qf6 (16.Qf6 Kd7 17.Bh3 Ke8 18.Rg8) 1-0. GuestVKML – GuestBRRL, freechess.org, 2020.

7.Nbd2 f6 8.c3 Bc5 9.Bc4 Nd7 10.Qb3 Ne7 (10...Nh6!?+=) 11.Ne4+/- Bb6 (11...Ng6 12.Bf7 Kf8 13.Rd1+- (13.Nc5?! Nc5 14.Ba3 Qe7+/-)) 12.Bf7 Kf8 13.0-0-0 (13.Rd1 c6+-) 13...Nf5?? (better 13...c6+/-) 14.Ba3+- (14.Ba3 c5 15.bc6 Ne7 16.cd7 Bd7 17.Bh5+-) 1-0. DEFFM – GuestYKTN, freechess.org, 2021.

7.Nbd2 f6 8.c3 Bc5 9.Bc4 Ne7 10.Qb3 (better 10.0-0+-) 10...Rf8? (better 10...Bf5+-) 11.Rd1 (11.Ne4 Bd6 12.Rd1 Bf5 13.Nd6 cd6+-) 11...Bf5 12.Ne4! Bd6 (12...Be4 13.Rd8 Discovered attack) 13.Nd6 cd6 14.Ba3 1-0. GuestYFRK – GuestYHCF, freechess.org, 2020.

7.Nbd2 f6 8.c3 Bd6 9.Qb3 Nd7+/-.

7.Nbd2 f6 8.Bc4 Nd7 9.Qe2+-.

7.Nbd2 f6 8.Bc4 Qe7 9.0-0 (9.c3 Bd6+-) 9...Be6 10.Qe2 Nh6 11.c3 (11.Ne4!?+-) 11...Bd6+/- 12.a4 (12.Ne4 0-0+=) 12...0-0+= 13.Bb3 (13.Be6 Qe6 14.Qc4 Qc4 15.Nc4 Nd7+=) 13...Bb3 (13...Nd7 14.Rfd1=) 14.Nb3+= Qe6 15.c4 Nd7 16.Qc2 White prepares c5 16...Rad8 (16...e4 17.Nfd2 f5 18.Rfd1=) 17.c5+= Be7 18.Ba3 c6 19.Rfd1 Rfe8 (19...Rc8!?+=) 20.Na5+/- Rb8 21.bc6 bc6 22.Qe4 (better 22.h3 Rec8 23.Rab1+=) 22...Rec8?? (better 22...Nc5 23.Bc5 Bc5+=) 23.Nd4!+- Qf7 (23...ed4 24.Qe6 Double attack (24.Qe6 Pinning; 24.Qe6 Deflection)) 24.Ndc6 Nc5 (24...Bc5 25.Nb8 Rb8 26.Qc6 Ba3 27.Rd7+- (worse 27.Ra3 Nf8+-; 27.Qd7?! Bf8+-)) 25.Qd5 Qd5 (25...Bd8 26.Qc5 Ra8 27.Rd7+-) 26.Rd5 Nb3 (26...Na4 27.Ne7 Kh8 28.Nac6+-) 27.Ne7 (worse 27.Be7 Na1 28.Rd1 Rb6 29.Ra1 Rcc6 30.Nc6 Rc6=+) 27...Kf7 28.Nb3 Rb3 (28...Rc3 29.Nd2 Rb7+-) 29.Nc8 Nf5 30.Rd7 Ke6 31.Ra7 g5 32.e4 Nd4 (32...Rb6 33.g4 Rb1 34.Rb1 h5 35.gf5) 33.Re7 1-0. DEFFM – amrolaaa, freechess.org, 2019.

7.Nbd2 f6 8.Bc4 Ne7 9.Ne5?? (better 9.c3 Bd6 10.Nh4+-) 9...Qd2 (9...fe5 10.Be5 Bg4 11.f3=+) 10.Qd2= Bd2 11.Kd2 fe5 12.Be5 c6?? (better 12...Rf8 13.Ke2 Rf5 14.Bg7 Rg5=) 13.Bg7+- Rf8 14.Bf8 Kf8 15.a4 Bf5 16.f3 Nd7 17.e4 Bg6 (17...Nb6 18.Be2 (18.ef5?! Nc4 19.Kd3 cb5+/-) 18...Be6 19.Rhd1+-) 18.Ke3 (18.Rhd1 Rc8+-) 18...Ne5 19.Bb3 (19.Be2 Nd7+-) 19...c5 (better 19...Be8+-) 20.Kf4 Nd7 21.Rhd1 Nf6 (21...Be8 22.g4+-) 22.g4 Bf7 (22...a6 23.Rd6 Ne8 24.Rb6+-) 23.Bf7 Kf7 24.g5 Nh5 (24...Ne8 25.Rd7+-) 25.Kg4 Ng7 26.Rd7 b6 (26...h5 27.Kh4 Ne6 28.Rb7+-) 27.a5 Ke8 (27...Rg8+-) 28.ab6 Kd7 (28...a5 29.ba6 Kd7+-) 29.Ra7 (29.Ra7 Ra7 30.ba7+-) 1-0. DEFFM – gagame, freechess.org, 2019.

6.de3 Nd7

7.Nc3 Ngf6 8.Bc4 0-0 9.h4 (9.0-0 Qe7=) 9...e4 10.Ng5 Bb4 (10...Be5!?-/+) 11.Kf1 Bc3 12.Bc3 h6 (12...Qe7=+) 13.a4 (better 13.Bf6 Qf6 14.Ne4+=) 13...Nb6?? (better 13...Qe7-/+) 14.Qd8 (14.Bf7 Kh8 15.Qd8 Rd8+-) 14...Rd8 15.Nf7?? (better 15.Bf7 Kf8 16.Bb4 Rd6 17.a5 hg5 18.Bd6 (worse 18.ab6 Kf7 19.Bd6 cd6+/-) 18...cd6 19.ab6 Kf7 20.ba7+/-) 15...Rf8+= 16.Ne5 (16.Nh6 Kh7 17.Bb4 Re8=) 16...Nc4= 17.Nc4 Ng4 18.Be1 Be6 19.Nd2 Ne3 20.Ke2 (20.Kg1 Nc2 21.Rc1 Nd4 22.Rc7 Rf4=+) 20...Nc2 (better 20...Ng2!? 21.Ne4 Bc4 22.Kd2 Rf4-+) 21.Rc1=+ Bg4 22.Kf1 Nd4 23.Rc7 (23.Ne4 Be2 24.Kg1 Bb5 25.Rc7 Ba4 26.Rb7-/+) 23...e3-+ 24.Ne4 (24.Nb1 ef2 25.Bf2 Rad8-+) 24...ef2 (better 24...Rae8!? 25.Nc3 ef2 26.Bf2 Ne2-+) 25.Bf2 Rae8 (better 25...Ne2 26.Rh3 Bh3 27.gh3 Rae8-+) 26.Ng3?? (better 26.Nd2-/+) 26...Be2 (better 26...Ne2 27.Nh5 Bh5-+) 27.Kg1+/- Bg4?? (better 27...Nf5 28.Nf5 Rf5 29.Rb7 Rc8 30.Ba7 Rc4+-) 28.Bd4+- g5 (28...Rf7 29.Rf7 Kf7 30.Ba7 Bd7+-) 29.Rg7 Kh8 30.Rg5 (30.Rg5 Kh7 31.Rg7 Kh8 32.Rg4 Kh7 33.Rg7 Kh8 34.Rb7 Kg8 35.Rg7 Kh8 36.Ra7 Kg8 37.Rg7 Kh8 38.Nf5 Re1 39.Kf2+-) 1-0. chessbit (1920) - myslewiecjest (1940), Rated Rapid game, lichess.org, 2020.

7.c4 Ngf6 8.Nc3 e4 9.Nd4 Ne5 10.Qc2 Bb4 (10...0-0!?=) 11.a3 Ba5 (11...Bc3 12.Bc3 Bg4 13.h3+–) 12.Be2 Bg4 13.0-0 Be2 (13...Bc3!? 14.Bc3 Be2 15.Ne2 Qd3 16.Qd3 ed3 17.Be5 de2+–) 14.Nce2+– (14.Qe2?! 0-0+=; 14.Nde2?! Qd3 15.Rfc1 Qc2 (worse 15...Qc4 16.Ne4 Qe4 17.Qe4 Ne4 18.Be5+–) 16.Rc2 Nd3=) 14...Nd3 15.Rad1 Bb6? (better 15...a6 16.Nf5 0-0+–) 16.Nf5 g6 (16...0-0 17.f3 Qe8 18.Bf6 gf6+–) 17.Nfg3 (17.Nfg3 0-0 18.Bf6 Qf6 19.Ne4+–) 1–0. Silent Move (2115) – billy2livers (1640), redhotpawn.com, 2015.

7.Bc4 f5 8.0-0+= Ngf6 (8...Qe7 9.Qe2=) 9.Ng5 Rf8 (better 9...Qe7!?+=) 10.Ne6+- Qe7 11.Nf8 Qf8 1-0. onur604 (2320) - blindren (2125), lichess.org, 2020.

7.Nbd2 Ngf6 8.Bc4 (8.Nc4 Qe7 9.Nd6 cd6 10.Be2=) 8...Nb6 (better 8...0-0!?=) 9.Be5+= Nc4 (9...Be5 10.Ne5 0-0 11.Bd3+=) 10.Nc4+/- 0-0 (10...Bb4!? 11.c3 Be7+/-) 11.Nd6+- cd6 12.Bd6 (12.Qd6 Qa5 13.c3 Ng4+-) 12...Qa5 (12...Re8 13.Be5 Qa5 14.Qd2 Qb5 15.Bf6 gf6 16.a3+/-) 13.Qd2 Qd2 14.Nd2 Rd8 (14...Re8 15.c4+-) 15.Be7 Rd5 16.Bf6 (16.c4 Rg5+-) 16...gf6 17.c4 Rg5 18.Rg1 Bf5 (18...Rc5 19.Rc1+-) 19.0-0-0 (19.Rc1 a6 20.f4 Rg6+-) 19...Rc8 (19...a6 20.f4 Rg4 21.ba6 Ra6 22.Kb2+-) 20.Kb2 a6 (20...Bg4 21.Rc1+-) 21.h4 Rg4 22.ba6 ba6 23.g3 Bd3 (23...Kf8 24.f3 Rg8 25.Kc3+-) 24.f3 Rg6 (24...Rgc4 25.Nc4 Bc4 26.Rg2+-) 25.Kc3 Bf5 26.g4 Be6 27.Rb1 f5 28.h5 Rg5 (28...Rg7 29.g5 Re8+-) 29.gf5 Rg1 30.Rg1 (30.fe6?! Rb1 31.ef7 Kf7 32.Nb1 Rc5+=) 30...Kf8 31.fe6 fe6 (31...Re8 32.ef7 Re3 33.Kd4+-) 32.Ne4 1-0. GuestKWSC – GuestRNSS, freechess.org, 2020.

7.Bd3 Ngf6 8.Nbd2 0-0 9.0-0 Nc5 10.Be5+/- Be5 11.Ne5 Nd3 (11...Be6 12.Ndf3+=) 12.cd3 Re8 (12...Nd5 13.a4+/-) 13.d4 Qd5 (13...Nd5 14.Qb3 Be6 15.e4+/-) 14.a4 (14.Rc1 Re7+/-) 14...h6 (14...a6 15.Nb1+/-) 15.Qc2+- Bg4 (15...Ng4 16.Ndf3+-) 16.Qc7 Be2 (16...Rac8 17.Qa5+-) 17.Rfc1 Ne4 (17...Rab8+-) 18.Ne4 Qe4 19.Qf7 Kh8 (19...Kh7 20.Rc7 Rg8 21.Rac1+-) 20.Rc7 Rg8 21.Rb7 Qc2 (21...Bc4 22.Nc4 Raf8 23.Qd7+-) 22.Rc7 Qd2 (22...Qe4 23.Rc3 Rac8+-) 23.Qf5 (23.Ng6 Kh7 24.Qf5 Qd1 25.Rd1 Rgf8 26.Nf8 Kg8 27.Qf7 Kh8 28.Qg7) 23...Rgf8 24.Qg6 Bd1 (24...Qe1 25.Re1 Rf7 26.Nf7 Kg8 27.Ne5 Bb5 28.Qg7) 25.Qg7 1-0. GuestWHVP – GuestYTFV, freechess.org, 2020.

7.Bd3 Ngf6= 8.Nbd2 0-0 9.0-0 Qe7 10.e4 Nc5 11.Nc4 e5 becomes the focus of attention 11...Bg4 (11...a6 A) worse 12.Be5 Be5 (12...Nfe4?! 13.ba6 b5 14.Nd6 cd6 15.Bd4+=) 13.Nce5 ab5-/+; B) worse 12.Nfe5 Be5 13.Ne5 ab5=; C) worse 12.Nd6 cd6 13.ba6 Nfe4-/+; D) 12.ba6 Ra6 13.Nce5=+) 12.a4 (12.h3 Be6=) 12...Rad8 (12...Nfe4 13.Be4 Ne4 14.Re1 Bf3 15.Qf3-/+) 13.Qe2 (13.h3 Bh5 14.Qe2 Rfe8=) 13...Nh5 (13...Qe6 14.Bc3=) 14.Qe3 Bf3 15.Qf3 (15.gf3? Nf4 16.Kh1 Ncd3 (16...Nfd3?! 17.cd3 Nb3 18.Nd6 Qd6 19.Rab1=+) 17.cd3 Bc5-+; worse 15.Nd6 Rd6 16.Qf3 Nf4=) 15...Nf4 16.g3 Nfd3 17.cd3 f6 18.Na5 Kh8 (18...Rb8 19.Rfd1=) 19.Rfc1 (better 19.d4 ed4 20.Bd4 Ne4 21.Nb7+=) 19...Nd3? (better 19...Rb8=) 20.Qd3+- Bb4 21.Qe3 (21.Qc4 Ba5 22.Ba3 Rd6+-) 21...Ba5+/- 22.Qa7 Bb6 23.Qb7 Qb4? (23...Qd6 24.Bc3 Qd3+=) 24.Bc3+- (24.Bc3 Qe7 25.a5+-) 1-0. GuestQJTG – GuestRHNY, freechess.org, 2020.

7.Be2 Ngf6 8.0-0 0-0 9.a4 Qe7 10.c4 (10.c4 e4 11.Nfd2=+; 10.Nfd2 Rd8=+). tschulz - Wormatia08, mySchach.de, 2005

7.Be2 Ngf6 8.0-0 0-0 9.Nbd2 Re8 10.Nc4 e5 becomes the focus of attention 10...a6 (10...Qe7!?+=) 11.Nd6+/- cd6 12.Qd6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Be2 Ngf6 8.0-0 b6 9.Nbd2 Bb7 10.Nc4 e5 becomes the focus of attention 10...e4 (10...Qe7 11.Nd6 cd6 12.a4=) 11.Nd6+/- cd6 12.Nh4 d5 13.Nf5 0-0 14.c4 Rc8 (14...Nc5!?+=) 15.Nd6 Rc7 16.Nb7 Rb7 17.cd5 Nc5 18.Bc4 Rd7 19.Qd4 Re8 20.Rfd1 Qc7 21.a4 Red8 22.Rdc1 Qd6 23.Rd1 Nd3?? (23...Qc7 24.Qc3 Nd3 25.Bd3 Qc3 26.Bc3 Nd5+/-) 24.Bd3+- ed3 25.e4 (25.Qd3?! Qd5 26.Bf6 Qd3 27.Rd3 Rd3 28.Bd8 Rd8+/-; 25.Rd3?! Qd5 26.Qd5 Nd5+-) 25...Qf4 26.f3 (26.Rd3?! Qe4 27.Qe4 Ne4+/-) 26...Qh4 27.Rac1 Qh6 28.Rc6 d2 (28...Qh4 29.g3 Qg5 30.Rd3+-) 29.Rd2 (better 29.Qd2 Qd2 30.Rd2+-) 29...Nd5 (29...Qg5+-) 30.Rh6 gh6 (30...Nf6 31.Qd7! Rd7 32.Rd7 Nd7+-) 31.Qh8 (31.Qg7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Ngf6

8.0-0 0-0 9.a4 e4-/+ 10.Ng5 (10.Nfd2 Qe7=+) 10...h6 11.Nf7 Rf7 12.Bf7 Kf7 13.Nd2 Qe7 14.Nc4 Ne5 15.Nd6 (15.Be5 Be5 16.Ne5 Qe5-/+) 15...cd6 16.h3 (16.Ba3 Nc4-+) 16...Bd7-+ 17.f4 (17.Ba3 Nc4-+) 17...ef3! 18.Be5 (18.gf3 Bh3 Deflection) 18...f2! 19.Rf2 (19.Rf2 de5 Zwischenzug; 19.Kf2 Ne4 Double attack (19...de5 Zwischenzug)) 19...Qe5 (19...de5?! 20.Qd5 Be6 21.Qe5=+) 20.Qd4 Qd4 21.ed4 Rc8 22.Ra3 Rc4 23.c3 d5 24.Rf3 Ke7 (24...Kg6 25.g4-+) 25.g4 (25.Rg3 g5-+) 25...Ne4 26.Kg2 Be8 27.Re3 Kd6 28.Rf3 (28.Rd3 Rc8-+) 28...Bg6 (28...Nd2 29.Rf8 Ke7 30.Rg8-+) 29.Re3 (29.Kg1 Nd2 30.Rf8 Nb1-+) 29...Nd2 30.a5 Nb1 31.Rb3 Ra4 32.a6 (32.Re2 Ra5 33.h4 Bd3-+) 32...Ra2 (32...ba6 33.b6 Be4 34.Re4 Ra2 35.Kg3 ab6 36.Rb6 (36.Rb1?! de4 37.Rb6 Kd5=) 36...Kc7 37.Ree6+- (37.Rb1?! de4 38.Kf4 Rh2=)) 33.Kg3?! (33.Kh1 b6 34.Kg1 Nd2-+) 33...b6 34.Rb1 (34.Rb4 Nd2 35.Kf2 Nc4 36.Re2 Ra3-+) 34...Bb1 35.Re8 Ra3 36.Rd8 Ke6 37.Re8 (37.Rc8 Bd3 38.Rc7 Bb5 39.Rg7 Rc3 40.Kg2 Ba6 41.Ra7 Bd3-+) 37...Kf6 (37...Kf7 38.Rc8 Bd3 39.Ra8-+) 38.Rc8 (38.Rf8 Ke7 39.Rg8 Rc3 40.Kf2 Kf7-+) 38...Bd3 39.Rc6 Kf7 40.Rc7 Kg6 41.Kf4 Bb5 42.Ra7 (42.Ke5 Ba6 43.Kd5 Bf1-+) 42...Ba6 (42...Ra6 43.Re7-+) 43.Ke5 (43.h4 Ra2 44.Rc7 Rf2 45.Ke5 Bc4 46.Rc6 Rf6-+) 43...Ra5 44.Re7 (44.h4 Bc8 45.Re7 Bg4-+) 44...Bc4 45.Kf4 b5 46.h4 (46.Re6 Kf7 47.Re3 Ra1-+) 46...Ra1 47.Re3 (47.Re6 Kf7 48.Rb6 Rh1-+) 47...Rh1 (47...Rf1 48.Kg3-+) 48.h5 (48.Kg3 Rg1 49.Kf4 h5 50.gh5 Kh5-+) 48...Kf6 49.Kg3 (49.Re8 Rf1 50.Kg3 Rc1-+) 49...Rg1 50.Kf3 (50.Kh4 Bb3 51.Re5 Bd1 52.Rd5 Rg4 53.Kh3 Rg5-+) 50...Bb3 51.Re5 Rc1 52.Rf5 Ke7 53.Re5 Kd6 54.Re3 Rf1 55.Kg2 (55.Ke2 Bc4 56.Kd2 Rg1-+) 55...Rf4 56.Rg3 (56.Kh3 Ba4 57.Rd3 Re4-+) 56...Bd1 57.g5 (57.Kh3-+) 57...Rg4 58.gh6 (58.Rg4 Bg4 59.Kg3-+) 58...Rg3 59.Kg3 gh6 (59...gh6 60.Kh4 Ke7-+) 0-1. GuestDRJF – GuestBWHP, freechess.org, 2020.

8.0-0 0-0 9.Nbd2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nb6 (12...e4!? 13.Nd4 Ne5=) 13.Bb3 (13.Bd3 Re8 14.Ne5 Be6+/-) 13...Re8 (13...Nbd7 14.Nc4+=) 14.Be5+/- Be5 15.Ne5 Qd2 16.Bf7 Kh8 17.Be8 Ne8 18.Rd1 Qb4 (18...Qc2 19.Rd8 h6 20.Re8 Kh7 21.Nf7+-) 19.Rd8 Qf8 (19...h6 20.Re8 Kh7+-) 20.Qa3!! Qa3 (20...Qa3 21.Re8 Mate attack) 21.Re8 (21.Re8 Qf8 22.Rf8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0 0-0 9.Nbd2 b6 10.a4 Bb7 11.a5 Qe7 (11...ba5 12.Nb3=) 12.a6 Bd5 13.Bd5 Nd5 14.Ne4 N5f6 15.Nfd2 Ne4 16.Ne4 Nc5 17.Qd5 Rad8 (17...Ne4 18.Qe4 f5 19.Qd5 Kh8 20.Rfd1+=) 18.Nc5+/- bc5 19.e4 (better 19.Rfd1+=) 19...Qh4? (better 19...Rb8!?=) 20.Be5+- Be5 21.Qe5 c4 (21...c6 22.bc6 Rfe8 23.Qc5 Qe4 24.f3+-) 22.Qc7 Qe4 23.Qa7 Qc2 24.b6 Ra8 (24...Qg6 25.b7 f5 26.Qc5+-) 25.Qe7 Rfe8 (25...Rae8 26.Qb4 c3+-) 26.b7 Rab8 (26...h6+-) 27.a7 1-0. onur604 (2320) - one_shot_only (2160), Casual Rapid game, lichess.org, 2021.

8.0-0 0-0 9.Nbd2 e4 10.Nd4 Ne5 11.Be2 Re8 (11...Qe7 12.h3=+) 12.c4 Be6 (12...Bg4!?=+) 13.Ne6+= Re6 14.Qc2 Neg4 (14...Ned7!?+=) 15.h3+/- Nh6 (15...Ne5 16.Ne4 Ne4 17.Qe4+/-) 16.Bf6 Qf6 17.Ne4 Qe5 (17...Qg6 18.Bd3 f5 19.Nd6 cd6 20.c5+-) 18.Nd6+- Rd6 19.Bf3 Rb8 (19...c6 20.bc6 bc6 21.Rad1+-) 20.Rad1 Nf5 (20...c6 21.bc6 bc6 22.Qa4+-) 21.Be4 Rf6?? (better 21...g6+-) 22.Rd5 Ne3 23.Bh7 Kh8 (23...Kf8 24.Re5 (24.fe3 Qe3 25.Qf2 Rf2 26.Rf2 Qc1 27.Kh2 Qc4-+) 24...Nc2 25.Bc2+-) 24.Re5 (24.fe3? Qe3 25.Rf2 Qe1 26.Kh2 Rf2-+ (26...Qf2?! 27.Qf2 Rf2 28.Be4-/+)) 24...Nc2 25.Bc2 c6 26.Re7 1-0. onur604 (2320) - harrypotter07 (2030), lichess.org, 2020.

8.0-0 0-0 9.Nbd2 e4 10.Ng5 Nc5 (10...Qe7 11.Bd4=+) 11.f3 (better 11.Bf6 Qf6 12.Nge4 Bh2 13.Kh2 Qh4 14.Kg1 Ne4 15.Ne4 Qe4 16.Bd5=) 11...h6?? (11...ef3 12.Qf3 Bh2 13.Kh1 Bd6= (13...Qd2 14.Bf6 Qc2 15.Bg7+-)) 12.Nf7+- (12.Nge4?! Nce4 13.Ne4 Ne4 14.fe4 Qh4=) 12...Rf7 13.Bf7 Kf7 14.fe4 Ncd7 (better 14...Kg8 15.e5 Ng4 16.ed6 Qd6+-) 15.Nc4 Kg8 16.e5 Ne5 (16...Be7 17.ef6 Nf6 18.Qd8 Bd8 19.a4+-) 17.Ne5 (17.Be5!? Be7+-) 17...Qe8 18.Nc4 Bg4? (18...Be7 19.a4+-) 19.Qd3 (19.Qd4 Qe6 20.Nd6 cd6+-) 19...Rd8 (19...Be7 20.Ne5 Be6 21.Ng6+-) 20.Nd6 (20.Bf6 Bh2 21.Kh2 Rd3 22.cd3 gf6 23.Rf6 Be2=+) 20...Rd6 21.Qc4 Kh8 (21...Qe6 22.Qc7 Be2 23.Bf6 gf6 24.Qb8 Kg7 25.Qb7 Rd7+-) 22.Bf6 Qe3 23.Kh1 Rf6 (23...Qe6 24.Qe6 Be6+-) 24.Rf6 gf6 25.Qg4 Qe5 (25...Qe8+-) 26.Rd1 Qe8 27.Qf4 Kh7 28.Qc7 Kg6 29.Qg3 Kf7 30.Qc7 (30.Qc7 Kg6 31.Qb7+-) 1-0. DEFFM – gyperborean, freechess.org, 2019.

8.0-0 0-0 9.Nbd2 h6 10.Qe2 (10.e4 Qe8=) 10...Re8 (10...e4 11.Nd4=) 11.a4 (11.e4 Qe7=) 11...Nb6 (11...e4 12.Nd4=) 12.Bb3 (12.a5 Nbd5+=) 12...Bg4 (12...e4 13.Nd4=) 13.h3 Bh5 14.a5 (14.e4 a5=) 14...Nbd7 15.Qc4 (15.e4 Nc5=) 15...e4 (15...Nc5 16.Ba2=) 16.Nd4 Ne5 17.Qa4 Ned7 (17...a6 18.Rfb1=) 18.Qc4 (18.Nc4 Nc5 19.Qa2 Nb3 20.Qb3 a6=) 18...Bg6 (18...a6 19.Rfb1=) 19.Rfd1 (19.a6 Qb8+=) 19...Qe7 (19...Nc5 20.Ba2=) 20.Nf1 (20.a6 Nb6 21.Qe2 Qe5+/-) 20...Rac8 (20...a6 21.Rd2=) 21.a6+= Ne5 22.Qe2 b6 (22...ba6 23.Ra6 Bh5 24.f3=) 23.Ng3 Nfd7 24.Ngf5 (24.Bd5 Nc5+/-) 24...Bf5 25.Nf5 Qf6 26.Nd6 cd6 27.Rab1 (27.Qh5 Rc5+=) 27...Qg6 28.Kh2 Nc5 29.Bd5 Na4 (29...Qf5 30.Rd2+=) 30.Bd4 Nc3 (30...Nc5!?+=) 31.Bc3+/- Rc3 32.Rb3 (32.Rd4!?+-) 32...Rc5 (32...Rb3 33.Bb3 Rd8 34.Bd5+/-) 33.c4 (33.Rb4 Nd7+/-) 33...Rec8 (33...Nc4 34.Bc4 d5 35.Rd5 Rd5 36.Bd5 Qd6 37.Kg1 Qd5 38.Rb4=) 34.Rc3 Rb5 (34...Kh7 35.Qc2 f5 36.Rd4+=) 35.cb5 Rc3 36.Qb2 (36.Rd4 Rc5+=) 36...Rc5 (36...Qf6 37.Rd4 (worse 37.Be4 Re3 38.Bh7 Kh8-/+) 37...Rc5 38.Qe2+=) 37.Rd4 (37.Qd4=) 37...Nd3 (better 37...Nf3 38.gf3 Rd5 39.fe4 Re5=+) 38.Qb1?? (38.Qd2!? Qf6 39.Be4 Nf2 40.Bc6 Qe5 41.g3+=) 38...Rc1?? (better 38...Nf2 39.Qa2 Qf6-+) 39.Qa2 Qf6 (39...Qf5!? 40.Be4 Qf2 41.Qf2 Nf2+=) 40.Re4+= Nf2 41.Bf7! Kh7 (41...Qf7 42.Re8 Double attack (42.Re8 Decoy)) 42.Rf4 Qe5 43.Qe6?? (43.Qf2 g5 44.Qd2=) 43...Rh1-+ 44.Kg3 Ne4 45.Kg4 h5! 46.Kh4 (46.Bh5 Nf6 Double attack (46...Qe6 Deflection; 46...Qg5 Decoy; 46...Qb5 Zwischenzug)) 46…Qg5 0-1. tsodikovich (1860) - ravish_panchal (1975), gameknot.com, 2018.

8.0-0 0-0 9.Ng5 h6 (9...Qe7 10.Nd2=+) 10.Nf7 (10.Nf3 Nb6 11.Nbd2 Qe8=+ (worse 11...Nc4 12.Nc4 e4 13.Nd6 cd6 14.Nd2+=)) 10...Rf7 11.Bf7 Kf7 12.Nd2 Nb6 13.c4 Bf5 (13...Qe7 14.Qc2=+) 14.Qb3 (14.c5 Bc5 15.Be5 Bd6=+) 14...Be6 (14...Nbd7 15.Ba3–/+) 15.Qc2 (15.a4 c6=+) 15...Kg8 (15...Qe7 16.c5 Bc5 17.Be5=+) 16.c5 Rc8?? (better 16...Bc5 17.Be5 Bd6 18.Bd6 Qd6=+) 17.cb6+– cb6 18.Qa4 Ra8 (better 18...a6!?+–) 19.Nc4 Bc7 (19...Qb8 20.Nd6 Qd6 21.Rfd1+–) 20.Ne5 (20.Be5 Be5 21.Ne5 Qd5+–) 20...a5 (20...a6 21.Rfd1 Qe8 22.f4+–) 21.Rfd1 Qe7 (21...Qe8 22.Nd3+–) 22.Ba3 (22.Rac1 Rc8+–) 22...Qe8 23.Bd6 Bd6 (23...Rc8 24.Bc7 Rc7 25.Rd6+–) 24.Rd6 Bf5 (24...Rd8 25.Rd8 (25.Rb6?! Nd5 26.Rb7 Bc8+–) 25...Qd8 26.Qd4 Qd4 27.ed4+–) 25.Qc4 (25.Nc4 Qe7+–) 25...Kh7 26.Qf4 Qc8 (26...Bc2 27.Nc4 (27.Rb6?! Nd5 28.Rh6 gh6=) 27...Rd8 28.Rd8 (28.Rb6?! Nd5 29.Qd4 Nb6 30.Qb6 a4+–) 28...Qd8 29.Rc1+–) 27.e4 (27.Rb6?! Nd5 28.Qd4 Nb6 29.Qb6 Qc2+–) 27...Be4 (27...Be6 28.Rb6 Qe8 29.Nf3+–) 28.Rf6 gf6 29.Qe4 Kh8 (29...f5 30.Qf3 Kh8 31.Nf7 Kg7 32.Nd6+–) 30.Ng6 Kg7 31.Nf4 Qe8 (31...Kh8 32.Qg6 Qf8 33.Ne6+–) 32.Qb7 Kh8 33.Nh5! Qf8 (33...Qh5 34.Qf3 Double attack (34.Qa8 Deflection; 34.Qf3 Decoy)) 34.Nf6! Qf6 (34...Qf6 35.Qc6 Double attack (35.Qa8 Deflection; 35.Qc6 Decoy; 35.Qa8 Overloading)) 35.Qa8 Kg7 36.Rd1 1–0. DEFFM – GuestMVFG, freechess.org, 2020.

6.de3 Qe7

7.Bc4 Nf6 8.0-0 0-0 9.Nbd2 a6 10.a4 ab5 (10...Bf5 11.Bd3 Bd3 12.cd3=) 11.ab5 White launches an attack. 11...Ra1 12.Qa1 e5 draws heavy fire 12...c6? (better 12...Nbd7!?=) 13.Be5+– Be5 14.Qe5 Qe5 15.Ne5 cb5 16.Bb5 Bf5 17.Bd3 Be6 18.Ne4 Ne4 19.Be4 b5 (19...f6!? 20.Nf3 Nc6+–) 20.Rb1+– Bc4 (20...Rd8 21.h3+–) 21.Bd3 Nc6? (21...Rc8 22.Nc4 bc4 23.Bc4 Nd7+–) 22.Nc6 (22.Nc6 Ra8 23.Bc4 bc4 24.h3+–) 1–0. GuestBRYS – GuestXBQC, freechess.org, 2020.

7.Bc4 Nf6 8.Nbd2 0-0 9.0-0 c6 10.a4 cb5 11.ab5 Bd7 (11...Bg4 12.h3 Bf5 13.Qe2+=) 12.Ng5 (12.Bd3 Re8+=) 12...a6 (12...Bg4 13.Qe1=) 13.Bf7 (13.Nge4 Bb4+=) 13...Rf7= 14.Nc4 Rf8? (better 14...Bc5 15.Nf7 Qf7 16.Ne5 Qe6 17.ba6 ba6+=) 15.Qd6+- Qd6 (15...Re8 16.Rfd1 Qd6 17.Nd6+- (worse 17.Rd6 Bb5 18.Ne5 a5+/-)) 16.Nd6 h6 17.Nf3 (17.Nb7?! hg5 18.c4 Bc8+=) 17...Ne4? (17...Ne8 18.Be5 Nd6 19.Bd6 Rd8+-) 18.Ne4 Bb5 19.Rfd1 (worse 19.Be5 Bf1 20.Kf1 Nc6+-) 19...Be2 20.Rd5 (worse 20.Be5 Bd1 21.Rd1 Nc6+-) 20...Bf3 21.gf3 Nc6 22.Be5 Ne5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Nf6 8.Ng5 Be6 (better 8...0-0!?=) 9.Ne6+= fe6 10.Qf3 e4 11.Qh3 Attacks the isolani on e6 11...Nd5? (better 11...a6+=) 12.Bd5+- ed5 13.Qc8 Qd8 14.Qe6?? (better 14.Qb7 Nd7 15.Qd5+-) 14...Qe7+/- 15.Qd5 Nd7 (15...c6!? 16.Qc4 a6 17.bc6 Nc6+-) 16.Qb7+- Rb8 17.Qd5 (worse 17.Qa7 Rb5 18.Bc3 0-0+/-) 17...Nf6 18.Bf6 gf6 19.Nd2 Qe5 20.Qc6 Kd8 21.Rb1 Rb6?? (better 21...f5+-) 22.Qa8 (22.Qa8 Ke7 23.Qh8 Rb5 24.Qh7 Kf8 25.Ke2+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 h6 8.0-0 Nf6 9.Nc3 Be6 10.Nd5 Nd5 11.Bd5 Bd5 12.Qd5 Will e5 fall? 12...c6 13.Qb3 cb5 14.Qb5 Nc6 (better 14...Qd7!? 15.a4 Qb5 16.ab5 Nd7=) 15.Be5!+/- Be5 16.Ne5 0-0 (16...a6!? 17.Nc6 ab5 18.Ne7 Ke7+/-) 17.Nc6+- bc6 18.Qc6 Rfc8 19.Qa4 Rc3 20.Rad1 Rac8 (20...Qa3 21.Qe4 Rac8 22.Rd2 Qa2 23.Rfd1+/-) 21.Rd7+- Qf6 22.Ra7 Rc2 23.Ra8 Ra8 (23...Qf5 24.Qa6+-) 24.Qa8 Kh7 25.Qe4 Qg6 26.Qd5 (26.Qg6 Kg6 27.Ra1 Rc5+-) 26...Qc6 (better 26...Rc3+-) 27.Qf7 Qa4 (27...Qe4+-) 28.Qf5 Kh8 (28...g6 29.Qf7 Kh8 30.Qf8 Kh7 31.Qe7 Kh8+-) 29.Rd1 (29.Rd1 Qh4 30.Qc2+-) 1-0. DEFFM – GuestLKLP, freechess.org, 2021.

7.Nbd2 Nf6 8.Bc4 Be6 (better is 8...0-0!?=) 9.Ne5+/– Be5 10.Be5 0-0 (10...Nbd7!? 11.Bf6 Nf6 12.Be6 Qe6+=) 11.Qf3+/– c6 (11...Nbd7!? 12.Bf6 Qf6 13.Qf6 Nf6+/–) 12.Bf6+– Qf6 13.Qf6 gf6 14.a4 cb5 15.ab5 Nd7 (15...a5 16.ba6! Bc4 17.Nc4 Ra6 18.Ra6 Na6 19.Nb6+–) 16.0-0 (16.Bd3 Rfd8+–) 16...Nb6 (16...Rfd8 17.Rfd1+–) 17.Bd3 Nd5 (17...Rfd8 18.Ra3+–) 18.Ra4 Nc3 (18...Nb6 19.Ra3+–) 19.Rh4 (better is 19.Ra3!? Nd5+–) 19...f5 20.Nf3 f6 (20...Bd7 21.Nd4+–) 21.Ra1 (21.Nd4 Bd7+–) 21...Bd7 22.Nd4 1–0. GuestBVRD – Unimat, freechess.org, 2018.

6.de3 f6

7.Bc4 a6 8.a4 (8.Nc3 Ne7+=) 8...ab5 9.ab5 Ra1 10.Ba1 Ne7 (10...Nd7 11.0-0+=) 11.0-0+= c6 (11...Bg4 12.h3 Bh5 13.Nc3+=) 12.Nc3 cb5 (better 12...Bg4!?+=) 13.Nb5+- Bc7 14.Qe2 (14.Ne5 fe5 (worse 14...Be5 15.Be5 Qd1 16.Rd1+-) 15.Qd8 Kd8 16.Nc7 Nec6+-) 14...Nbc6 (14...Bd7!?+/-) 15.Rd1+- (15.Nc7?! Qc7 16.Bc3 Bg4+=) 15...Bd7 16.Be6! (16.Nc7?! Qc7 17.Nd2 Bf5+=) 16...Be6 17.Rd8 Kd8 18.Bb2 Kc8 19.Nd2 Rd8 20.h3 Nb4 (20...Nf5 21.Ne4+/-) 21.Ne4+- Bd5? (better 21...Bf5 22.Ng3 Be6+-) 22.Qg4 Kb8 (22...f5 23.Qg7 Nbc6+-) 23.Nc7 Kc7 (23...Be4 24.Qe4 Kc7 25.Qb4+-) 24.Qg7 Be4 (24...Nbc6 25.Nf6 Kc8 26.Qh7+-) 25.Qe7 Rd7 26.Qb4 Rd1 (26...Bc6 27.f4 Rd5 28.Qe7 Kb6 29.fe5 fe5 30.Be5+-) 27.Kh2 Rf1 (27...Bc6+-) 28.Qc4 (28.Qc4 Kb6 29.Qf1 Bc2 30.Qc4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

7.Bc4 Bb4 8.Nc3 Qd1 9.Rd1 Nd7 10.0-0 Bd6 (10...Nb6 11.Bb3=) 11.Ne4 Be7 12.Rd3 Nb6 13.Bb3 Bf5 (13...Bd7 14.c4=) 14.Nfd2+= Nh6 15.a4 a5 (15...a6 16.f4 ab5 17.ab5+=) 16.f3 (16.f4 ef4 17.ef4 Rd8+=) 16...Nf7 17.g4 (17.Rd1 Nd6+=) 17...Bg6= 18.Rc3 Rc8 19.Nc5 (19.f4 h5 20.f5 Bh7 21.gh5 Bg8+=) 19...Bc5 20.Rc5 0-0 (20...h5 21.gh5 Rh5 22.Bc3=) 21.e4 (21.f4 Rfd8 22.Bc3 Nd7+/-) 21...Kh8 22.Nc4 (22.Bc3 Na8+=) 22...Nc4= 23.Rc4 Nd6 (23...Ng5 24.Rc3+=) 24.Rc3 h6 (24...Bf7!?+=) 25.Be6 Rce8 26.Bb3 Re7?? (better 26...Rc8!?=) 27.Rd1 (27.b6 c5 28.Rc5 Rc8+-) 27...Bf7 (27...b6!?+/-) 28.Ba3 (28.b6 Bb3 29.cb3 Ne8+-) 28...Rd8 (better 28...Bb3 29.cb3 b6+-) 29.Bd5 (better 29.b6!? cb6 30.Rd6+-) 29...Bd5 30.Rd5 (worse 30.ed5 b6=) 30...Red7 31.Rcd3 Kg8? (31...Rc8!?+-) 32.c4! b6 (32...Nc4 33.Rd7 Pinning (33.Rd7 Deflection)) 33.c5 bc5 34.Bc5 Kf7 (34...Rc8+-) 35.h4?? (better 35.b6+-) 35...Ke8 (35...Ke6 36.h5+/-) 36.h5 Nc4 37.Rd7 Rd7 38.Rd7 Kd7 39.Bf8 Nb2 40.Bg7 Na4 41.Bh6 Nc5? (41...Nc3 42.Bd2 Nb5 43.h6+-) 42.Be3 (better 42.Bd2 Ke7 43.Ba5 Ne6+-) 42...Ne6 43.h6 Ke8?? (better 43...Nf8+-) 44.h7 Kf7 45.h8Q 1-0. chessbit (1975) - Chessyfan (1960), Rated Classical game, lichess.org, 2020.

7.Bc4 Bg4 8.Qd5+- Bb4? 9.c3 Qd5 10.Bd5 c6 11.bc6 (11.cb4?! cd5 12.0-0 Ne7=+) 11...bc6 12.Bg8 (12.cb4?! cd5 13.Nc3 Ne7=) 1-0. GuestDJCG - Fishstar, freechess.org, 2019.

7.Bc4 Bg4 8.Qd5 Ne7 9.Qf7 Kd7 10.Qg7 Be6 11.Nbd2 Bc4 12.Nc4 a6? (better 12...Ke6 13.Qg4 f5+-) 13.Qf6 ab5 (13...Rf8 14.Nfe5 Be5 15.Ne5 Ke8+-) 14.Nfe5 (14.Nce5 Kc8 15.Qe6 Nd7+-) 14...Be5 (14...Kc8 15.Qe6 Nd7 16.Nd6 cd6 17.Nf7 Qa5 18.Kf1+-) 15.0-0-0 Nd5 16.Ne5 (16.Ne5 Kc8 17.Qf5 Nd7 18.Rd5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Bg4 8.Qd5+- Bh5 9.Qb7 Nd7 10.Qe4 (10.Nbd2 Nc5 11.Qc6 Kf8+/-) 10...Bg6 11.Qh4 Bc2 12.Bg8 Rg8?? (better 12...Bb1 13.Rb1 Rg8 14.Qh7 Kf7+-) 13.Qc4 Rh8 14.Qc2 a6 15.ba6 Qc8 16.0-0 Qa6 17.Nc3 Nc5 18.Ne4 (18.Qf5!? Qd3 19.e4 Qc4+-) 18...Qa4 19.Nd6 (19.Qa4 Ra4 20.Nc3 Ra8+-) 19...cd6 20.Qd2 Ke7 21.Qd5 (21.Rfd1 Rhd8+-) 21...Qe4 22.Qd2?? (22.Qd1 Rhc8+-) 22...Qa4 23.Rfc1 Rhc8 24.h3 Rab8 25.Bc3 Qa6 (25...f5+-) 26.Qc2 (26.Bb4 Ne4 27.Qb2 Kf8+-) 26...Qd3? (better 26...Na4 27.Qh7 Nc3 28.Qg7 Ke6+-) 27.Be1+- g5 28.a4 h5 29.a5 Qc2 30.Rc2 Rc7 31.a6 (better 31.Rac1 Ra7+-) 31...Ra7 32.Rca2 Rb6 33.Kf1 h4 (33...Rba6 34.Ra6 Ra6 35.Ra6 Na6 36.h4+-) 34.Nh2 Raa6 35.Ra6 Ra6 (35...Na6 36.f4! e4 37.Ng4+-) 36.Ra6 Na6 37.f4! Kf7 (37...ef4 38.ef4 Combination; 37...gf4 38.Bh4 Discovered attack (38.Bh4 Deflection)) 38.Nf3 (38.fg5 fg5 39.Nf3 Kf6+-) 38...Kg6 (38...e4 39.Nd4+-) 39.fg5 fg5 40.Ke2 Nc5 (40...e4 41.Nd4+-) 41.Ba5 (41.Bb4 Ne4+-) 41...Kf5 (41...Nb7 42.Bb6 Kf5 43.e4 Ke4 44.Ng5 Kf5 45.Nf3+-) 42.Bd8 Ne4 43.Kd3 d5 (43...Nf2 44.Kc4 g4 45.Bh4+- (45.Nh4?! Ke4+/-)) 44.Kc2 Nf6 (44...Nd6 45.Ng5 e4 46.Kc3+-) 45.Kd1 (better 45.Bf6 Kf6 46.Nh2 d4+-) 45...Nh7 46.Ke2 Nf6 (46...Nf8 47.Ng5 e4 48.Nf7+-) 47.Kd2 (47.Bf6 Kf6 48.Nh2 Kf5+-) 47...Ne4 48.Kd1 Nf6 (48...Nd6 49.Ng5 Nb5 50.Nf3+-) 49.Ke2 Nh7 50.Bc7 e4 (50...Nf8 51.Be5 g4 52.hg4 Kg4 53.Bd6+-) 51.Nd4 Kg6 52.Bd8 Nf8 (52...Kf7 53.Kd2+-) 53.Kd2 Nh7 (53...Nd7 54.Nc6 Nc5 55.Ne7 Kf7 56.Nd5+-) 54.Kc3 Nf8 (54...Kf7 55.Kb4 Ke8 56.Bc7+-) 55.Be7 Nd7 56.Nc6 Nb6 57.Kd4 Kf5 (57...Kh5 58.Nb4 Nc4 59.Nd5+-) 58.Bd8 Nc4 (58...Na4 59.Ne7 Kf6 60.Nd5 Kf5 61.Nf6+-) 59.Ne7 Ke6 60.Nd5 Nd2 (60...Nd6 61.Bg5 Nf5 62.Ke4 Nd6 63.Kd4 Nf5 64.Kd3 Kd5 65.e4 Ke5 66.ef5 Kf5 67.Be7+-) 61.Bg5 Nb3 62.Ke4 Nc5 63.Kd4 Nb3 64.Kc3 Nc5 65.Kd4 (65.Kc4!? Ne4 66.Nf4 Ke5 67.Bh4 Nd6 68.Kd3 Nb7+-) 65...Nb3 66.Kc3 Nc5 67.Kc4 Nb7 (67...Ne4 68.Nf4 Ke5 69.Nd3 Kd6 70.Bh4 Nd2 71.Kc3 Nb1 72.Kd4+-) 68.Kd4 Na5 69.e4 Nb3 70.Ke3 Na5 (70...Nc5 71.Bh4 Kf7 72.g4+-) 71.Bh4 Nc4 (71...Nc6 72.Bf6 Nb8 73.h4+-) 72.Kd4 Na5 (72...Nd6+-) 73.Nf4 Kd7 74.e5 Nc6 75.Ke4 Na7 76.g4 (76.g4 Nc8 77.g5 Ne7 78.g6 Ng6 79.Ng6 Ke8 80.Kd5 Kf7 81.Nf4 Kg8 82.Kc6 Kf7 83.e6 Kf8 84.e7 Ke8 85.Kd6 Kf7 86.Kd7 Kg7 87.e8Q Kh7 88.Bf6 Kh6 89.Qg6) 1-0. GuestCKCN – GuestVTRV, freechess.org, 2019.

7.Bc4 Bg4 8.Qd5+- Nh6 9.Qb7 Nd7+-.

7.Bc4 Qe7

8.0-0 Be6 9.Bd5 Bd5 10.Qd5 c6 11.Qb3 cb5 12.Nc3 (12.Qb5 Nc6=) 12...a6 (12...b4 13.Ne4 Nc6 14.a3=) 13.Nd5+= Qd7?? (better 13...Qd8+=) 14.Nb6+- Qc6 15.Na8 Ne7 16.Rfd1 Nd7 17.Qe6 Bc5 18.Qg4 Ng6 19.Rd5! Qd5 (19...Ndf8 20.Rad1 Be7+-) 20.Nc7 Kf7 21.Nd5 Rd8 22.Be5! Nge5 (22...Nde5 23.Ne5 Double attack; 22...fe5 23.Ng5 Mate attack; 22...Nge5 23.Qh5 Pinning) 23.Ne5 Ne5 24.Qh5 Ng6 (24...Kg8 25.Rd1 Rc8 26.f4+-) 25.Nf6! Kf6 (25...Kf6 26.Qf3 Double attack (26.Qc5 Discovered attack); 25...gf6 26.Qh7 Double attack (26.Qc5 Discovered attack)) 26.Qc5 Rd7 27.Qc8 Re7 (27...Ke7 28.Qg8 Kf6 29.f4+-) 28.Rd1 h6 (28...Re6+-) 29.Rd6 Kf7 30.Qf5 Kg8 31.Qg6 Rf7 32.Rd8 Rf8 33.Rd7 (33.Rd7 Rf7 34.Qf7 Kh7 35.Qg7) 1-0. DEFFM – GuestZKQN, freechess.org, 2021.

8.0-0 Be6 9.Bd5 Bd5 10.Qd5 c6 11.Qc4 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Qf7+/-.

8.0-0 Be6+/- 9.Bd5 Bd5 10.Qd5 c6 11.Qc4 Qc7? 12.Qe6 Ne7 13.Rd1 Bc5 14.Nc3 Nd7 (14...cb5 15.Nd5 Qc6 16.Ne5 fe5 17.Qe5+-) 15.Ne4 (better 15.a4 0-0-0 16.Ne4 cb5 17.ab5+-) 15...0-0-0?? (better 15...cb5 16.h3 Qc6 17.Qc6 bc6 18.Rd7 Kd7 19.Nc5 Ke8+/-) 16.Nc5 Nd5 (16...cb5 17.Ba3 Nc6 18.Qh3+-) 17.c4 (17.bc6!? bc6 18.c4 N5b6+-) 17...Kb8 (17...N5b6 18.Ba3 Rhe8 19.Qg4+-) 18.Nd7 Qd7 19.Qd7 Rd7 20.bc6 (20.bc6 bc6 21.cd5 cd5 22.Rd2+-) 1-0. DEFFM – GQs, freechess.org, 2019.

8.0-0 Be6 9.Bd5 Bd5 10.Qd5 c6 11.Qc4 Qf7 12.Qa4 (12.Qd3 Bc7+/-) 12...Ne7 (12...cb5 13.Qb5 Nc6 14.Rd1+=) 13.Rd1 (13.Nc3 0-0 14.Rad1 Nc8+/-) 13...Bc5 14.Nc3 0-0 15.Ne4 Bb6 (better 15...cb5!? 16.Qb5 b6+/-) 16.Nd6 cb5 (16...Qe6 17.Nb7 cb5 18.Qb5 Nbc6+-) 17.Qg4 (17.Nf7?! ba4 18.Nd6 Nbc6=+) 17...Qg6? (17...f5 18.Qb4 Nbc6 19.Qb5 Qg6 20.Be5 Rab8+-) 18.Qe6 Kh8 19.Qe7 Nc6 20.Qb7 Qc2 (20...Na5 21.Qd7 Nc4 22.Nc4 bc4 23.Qa4+-) 21.Rd2 Qc5 22.Nf5 (22.Qd7 Na5+-) 22...Rg8 23.Nd6 h6?? (23...Rgf8 24.Rc1 Na5+-) 24.Rc1+- Rgb8 (24...Qb4 25.Qc6 Raf8+-) 25.Nf7 (25.Qd7 Qb4 26.Rc6 Rd8 27.Nf7 Kg8 28.Nh6 Kh8 29.Nf7 Kg8 30.Nd8 Rd8 31.Qe6 Kh7 32.Ng5 fg5 33.Qg6 Kg8 34.Be5 Qb1 35.Qb1 Rd2 36.Rc8 Bd8 37.Bc7 a5 38.Bd8 Rd5 39.Ba5 Kf7 40.Qb3 Ke6 41.Rc6 Ke5 42.Bc7 Kf5 43.e4 Ke4 44.Qe3 Kf5 45.Qf3) 25...Kh7 (25...Kg8 26.Nh6! gh6 27.Qd7+-) 26.Qd7 (better 26.Qc6 Qc6 27.Rc6+-) 26...Qf8 (26...Qe7 27.Rc6 Qd7 28.Rd7 Rc8 29.Rc8 Rc8+-) 27.Rc6 Rd8 28.Qf5 g6 (28...Kg8 29.Nh6! Kh8 30.Nh4 gh6 31.Ng6 Kg8 32.Nf8 Bd4 33.Qh7 Kf8 34.Rf6 Ke8 35.Qf7) 29.N3g5! hg5 (29...fg5 30.Qg6 Mate attack; 29...hg5 30.Qh3 Double attack (30.Qf6 Decoy)) 30.Qh3 Kg8 31.Qh8 Kf7 32.Rf6 Ke7 33.Rf8 Rf8 (33...Bd4 34.Qf6 Kd7 35.Rf7 Kc8 36.Qc6 Kb8 37.Rb7) 1-0. GuestKWYZ – Hrekall, freechess.org, 2020.

8.0-0 Bg4? 9.Nc3 (9.Bg8 e4 10.Qd5 c6 11.bc6 bc6+-) 9...e4? (better 9...Nd7 10.Nd5 Qf8+/-) 10.Qd5 ef3 (10...c6 11.Qe4 f5 12.Qe7 Ke7 13.Nd4+-) 11.Qb7 fg2 12.Qg2 (12.Kg2 c6 13.bc6 Be6+-) 12...Nh6 (12...Qe5 13.f4 Qe3 14.Kh1+-) 13.Qa8 c6 (13...Qe5 14.f4 (14.Qb8?? Kd7 15.Qc7 Bc7 16.Rfd1 Kc8-+) 14...Qe3 15.Kh1+-) 14.Ba3! Bf3 (14...Ba3 15.Qb8 Double attack (15.Qb8 Deflection)) 15.Rfd1! cb5 (15...Bd1 16.Rd1 Combination) 16.Bb5 Kf7 (16...Kf8 17.e4 Kf7 18.Bd6+-) 17.Bc4 Kg6 (17...Ke8 18.Qf3 Ba3+-) 18.Qf3 Ba3 19.Qg3 (19.Qg2 Ng4 20.Qg4 Kh6 21.Qh3 Kg6 22.Rd5 h6 23.Qf5 Kf7 24.Re5 Qe6 25.Qe6 Kg6 26.Qf5) 19...Kf5 (19...Ng4 20.Qg4 Kh6 21.Qh3 Kg6 22.Rd5 Qe5 23.Re5 fe5 24.Qe6 Kg5 25.Ne4 Kh4 26.Kg2 Kh5 27.Be2 Kh4 28.Qg4) 20.Rd5 (20.Rd5 Qe5 21.Re5 fe5 22.h4 Ng4 23.Qf3 Kg6 24.Qg4 Kh6 25.Qg5) 1-0. DEFFM – GuestWRQN, freechess.org, 2019.

8.Nc3 Be6 9.Bd5 c6+/-.

7.Bc4 Ne7

8.0-0 a6!? 9.Nc3 ab5 10.Nb5 Nbc6+/-.

8.0-0 c6 9.Nc3 Bb4 10.Qe2 Qa5 11.Ne4+-.

8.0-0 c6 9.Nc3 Nd7?? 10.Qd6+– 1–0. GuestZSCT – GuestXNNM, freechess.org, 2020.

8.0-0 c6 9.Nc3 Bf5 10.Nh4 Bg6 (10...Qd7 11.Nf5 Nf5 12.a4+-) 11.Ng6 hg6 12.a4 (12.Ne4 Bb4 13.a3 Qd1 14.Rfd1 Rh4+-) 12...Qc7? (12...f5+-) 13.Ne4 Bb4 14.c3 Ba5 (14...Rh4 15.f4 (worse 15.cb4 Re4 16.Qc2 Rc4 17.Qc4 Nd7+-) 15...Qb6 16.g3 (16.cb4?! Qe3 17.Nf2 Qf4+-) 16...Qe3 17.Nf2+-) 15.Qb3 Nd7 16.Bf7 (better 16.Ba3 c5 17.Be6+-) 16...Kd8 (16...Kf8+-) 17.Rad1 c5 (17...Kc8 18.Be6 Nd5+-) 18.Rd7! Qd7 (18...Qd7 19.Rd1 Pinning (19.Rd1 Decoy); 18...Kd7 19.Qe6 Mate attack) 19.Rd1 Qd1 20.Qd1 Kc8 21.Qd6 Bd8 22.Be6 1-0. GuestCKCN – GuestJWBK, freechess.org, 2019.

8.0-0 Nd7 9.a4 Nb6 10.Bb3 Nd7 11.Nc3 Nc5 12.Ba2 Be6 13.Be6 Ne6 14.Qd5?? (14.Qe2 0-0+/-) 14...Nc5 (better 14...Nd5 15.Nd5 e4 16.Nd4 Nd4 17.ed4 Bh2 18.Kh2 Qd5 19.f3-+) 15.Rad1?? (better 15.Qc4 Qd7 16.Ba3+=) 15...Nd5-+ 16.Nd5 (16.Rd5 Qe7-+) 16...c6 (16...Na4 17.Ba1-+) 17.bc6 (17.Nc3 Qc7 18.Ba3 Be7-+) 17...bc6 18.Nb4 Qc7 19.Ba3 Na4 (19...0-0-0 20.Ra1-+) 20.Na6 Qb6 (better 20...Qb7 21.Rd6 Qa6 22.Re6 Kf7 23.Re7 Kg8 24.h4-+) 21.Bd6 (21.Rd6 Qa6 22.Re6 Kf7 23.Re7 Kg8-+) 21...Qa6 22.Nh4 (22.Ra1 0-0-0 23.Bb4 c5 24.Bc5 Qc4-+) 22...0-0-0 23.Nf5 1-0. GuestHVTY – GuestYRLK, freechess.org, 2019.

8.0-0 Nd7 9.Nbd2 Nc5 10.Nb3 (10.Qe2 Bg4 11.Ba3 Nd7 12.Bd6 cd6+=) 10...Be6 (better 10...Na4 11.Bc1 Nb6+=) 11.Ne5?? (11.Qe2 Nb3 12.ab3+/-) 11...Bc4?? (better 11...Be5 12.Qe2 Bc4 (12...Bb2?! 13.Rad1 Qc8 14.Nc5=+) 13.Qc4 Nb3 (13...Bb2?! 14.Rad1 Nd7 15.Nc5-+) 14.Qb3 Bb2 15.Qb2 0-0-+) 12.Nc4+- Ne4? (better 12...0-0+-) 13.Qh5 (13.Qf3 Ng5 14.Qb7 Qc8 15.Qc8 Nc8+-) 13...Ng6 (13...Kf8 14.f3 Ng5 15.f4+-) 14.Qd5 (14.Qd5 Bh2! 15.Kh2 Qd5 16.f3 Qc4 17.fe4 Qc2 18.Bc1-+) 1-0. GuestJKFC – GuestPSZR, freechess.org, 2019.

8.0-0 Bg4 9.Nc3 Ng6? (better 9...Nd7+/-) 10.Qd5+- Qd7 (10...Rf8 11.Qb7 Nd7+-) 11.Qb7 Bf3 12.gf3 (better 12.Qf3 c6 13.Rfd1 Qc7 14.bc6 a6+-) 12...Ke7 (12...Nh4 13.Kh1 Qh3+-) 13.Nd5 (13.Qa8 Re8 14.Rad1 Nh4+-) 13...Kd8 (13...Ke8 14.Qa8 c6 15.bc6 Qc6 16.Qc6 Nc6 17.Rfd1+-) 14.Qa8 Kc8 (14...c6 15.Nc3 Ke7 16.Rfd1+-) 15.Rfd1 Qh3 (15...Nh4 16.Nc7! Kc7+-) 16.Nc7! Bc7 (16...Kc7 17.Qa7 Deflection; 16...Bc7 17.b6 Decoy) 17.b6 ab6 (17...Bd6 18.Rd6 Qg4 19.fg4 ab6 20.Bd5 Kc7 21.Qb7 Kd6 22.Ba3) 18.Ba6 1-0. DEFFM – GuestBLMK, freechess.org, 2019.

6.de3 Nf6

7.Be5 0-0 8.Bd6 cd6 9.Be2 d5 10.0-0 Ne4 11.Qd4 Bg4 (11...Qf6 12.Rd1+/-) 12.c4+- Bf3 13.Bf3 Re8 (13...Nd7 14.Rd1 Ndf6 15.cd5+-) 14.cd5 (better 14.Qd5 Qd5 15.cd5+-) 14...a6?? (14...Nd6 15.Nc3 Nd7+-) 15.Be4 Re4 (15...Nd7 16.ba6 Ra6 17.Rd1+-) 16.Qe4 ab5 17.Nc3 b4 (17...Na6 18.Nb5 Qd7 19.Rfb1+-) 18.Qb4 1-0. DEFFM – guestGRausA, freechess.org, 2021.

7.Be5 0-0 8.Bd6 Qd6 9.Qd6 cd6 10.Bd3 Nbd7 11.0-0 Nc5 12.Nc3 Nd3 13.cd3 Bd7 14.a4 Rfc8 15.Ra3 h6 16.Nd4 Rc5 17.Nce2 a6 (17...Rac8 18.Raa1+/-) 18.ba6 Ra6 19.Rb1 Ra4 20.Ra4 Ba4 21.Rb7 Ng4 22.h3 Ne5 23.Nf5 Nd3 24.Nd6 Rc2 25.Ng3 Rc1 26.Kh2 Nf2 27.Rf7 Rd1 28.Rf2 Rd6 29.Nf5 Re6 30.Ra2 Be8 31.Ra3 Bg6 32.Nd4 Re7 33.g4 Be4 34.Kg3 g6 35.h4 Kf7 36.h5 gh5 37.gh5 Bb1 38.Rb3 Be4 39.Kf4 Bd5 40.Rb6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Be5 Be5 8.Qd8 Kd8 9.Ne5 Ke7 10.Nc3 Be6 11.Bd3 Nbd7 12.Nf3 (12.Nd7 Nd7 13.0-0-0 Nc5+/-) 12...Nc5 13.0-0 Nd3 14.cd3 Rhd8 15.Nd4 h6 16.Ne6 Ke6 17.d4 Nd5 (17...Rac8 18.Na4 b6 19.Rfc1+/-) 18.Ne4 (18.Rac1!? Nc3 19.Rc3 Kd6+/-) 18...b6 19.Rfc1 f5 (19...a6 20.Nc3+/-) 20.Rc6 Kf7 (20...Kd7 21.Ng3 Ne7 22.Rc3+/-) 21.Ng3 (21.Nc3!? Ne7 22.Rc7 Rac8 23.Rc8 Rc8+-) 21...g6+/- 22.f3 (22.h4 a6+/-) 22...Rd7 23.e4 Ne7 24.Rc4 Rad8 (24...a6!? 25.Ra4 Rad8 26.ba6 Rd4 27.Rd4 Rd4+/-) 25.d5 f4 (25...Nc8+-) 26.Ne2 Nc8 (26...g5 27.Rac1+-) 27.Rac1 Nd6 28.Rc7 Nb5 29.R7c6 g5 30.Rh6 Kg7 31.Rhc6 Rd6 (31...Re8 32.h4 gh4 33.Nf4+-) 32.a4 Rc6 33.Rc6 (worse 33.dc6 Nc7+-; 33.ab5?! Rc1 34.Nc1 Kf6+=) 33...Nd6 34.e5 (better 34.Nd4!? Kf7+-) 34...Nf5 35.Rc7 Kg6 36.d6 Nd6 37.ed6 Rd6 38.Ra7 Rd2 39.Nc3 Rd4 (39...Rc2 40.Ne4 Rc1 41.Kf2 Rc2 42.Kf1 Rc1 43.Ke2 Rc2 44.Kd3 Rg2 45.Ra6 Rh2 46.Rb6 Kh5 47.Rb5+-) 40.Ra6 Kg7 41.Rb6 Rc4 42.Rb3 Kg6 (42...Rc5 43.g3+-) 43.a5 Kf5 (43...Rc5 44.Ra3 Rc7 45.a6+-) 44.a6 g4 (44...Rc8 45.a7 Ra8 46.Rb7+-) 45.a7 gf3 1-0. DEFFM – GuestPVKT, freechess.org, 2020.

7.Be5 Be5 8.Qd8 Kd8 9.Ne5 Re8 10.Nf7+- Ke7 11.Ne5 Bd7 12.Nc3 a6 13.ba6 ba6 (13...Na6 14.Nd7 Kd7 15.Bc4+-) 14.Be2 Nc6 (14...Bc6 15.Nc6 Nc6 16.Bf3+-) 15.Nd7 Nd7 (15...Kd7 16.0-0-0 Kc8 17.Bf3+-) 16.Bf3 Kd6 (16...Nde5 17.Be4 Kd6+-) 17.0-0-0 Ke7 18.Bc6 Rab8 (18...Rad8 19.Nd5 Kd6+-) 19.Rd7 Ke6 (19...Kf8 20.Rhd1+-) 20.Rg7 Red8 21.Ne4 Ke5 22.f4 Kf5 (22...Ke6 23.f5! Ke5 24.Re7 Kf5 25.Rf1 Kg4 26.h3 Kh5 27.g4 Kg6 28.Rf6) 23.g4 Ke6 24.f5 Ke5 25.Re7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Be5 Be5 8.Qd8 Kd8 9.Ne5 Rf8 10.Bc4 (10.Nc3 Ke7+/-) 10...Be6 11.Nc3 Bc4 12.Nc4 Nbd7 (12...a6 13.0-0-0 Kc8 14.b6+/-) 13.0-0-0 (13.Ke2 Ke7+/-) 13...Ke7 (13...a6 14.b6+/-) 14.e4+- Ng4 (14...Rfd8 15.Rhe1+-) 15.Nd5 (15.f3 Ngf6+-) 15...Kd8 16.Rd2 (16.Rhe1 c6 17.Nde3 Ne3 18.Re3 Kc7+-) 16...c6 17.bc6 bc6 18.Nb4 Rb8?? (better 18...Kc7+-) 19.Nc6 (19.Nc6 Kc7 20.Nb8 Rb8 21.Rhd1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

7.Ne5 0-0 8.Nf3 Bg4 9.Be2 c6 10.a4 Qc7 (10...a6 11.0-0+/-) 11.Nc3 (better 11.Bf6!? gf6 12.Nd4 Be2 13.Qe2+/-) 11...a6 (11...Rd8 12.Qb1 a6 13.ba6 Na6 14.h3+=) 12.Ng5 (12.Qd4!?+=) 12...Be2= 13.Qe2 (13.Ne2 Rd8 14.Qb1 Nbd7=) 13...ab5 (13...cb5 A) 14.ab5? Bb4 (14...Bh2 15.g3+-) 15.0-0 Bc3 16.Bc3 Qc3-+; B) 14.Nge4 Ne4 15.Ne4=+) 14.ab5= Ra1 15.Ba1 cb5 (15...Bh2 16.Nh7 Kh7 17.b6=) 16.Nb5?? (better 16.Nge4 Ne4 17.Ne4 Qa5 18.Bc3=+) 16...Qa5-+ 17.Bc3 Bb4 18.Bb4? (better 18.0-0 Bc3 19.Rb1-+) 18...Qb4 19.c3 Qb1 20.Kd2 (20.Qd1 Qb5 21.Nf3-+) 20...Qh1 21.Kc2 (21.Nd4 Qg2 22.f4 Qg1-+) 21...Qg2 22.h4 h6 23.Nf3 Nc6 24.Nd6 (24.Kb2 Ra8 25.Nd2 Qh1-+) 24...Ra8 25.Kb2 Ng4 (better 25...Qh1 26.Ne1 Qd5 27.Nc2-+) 26.Ne1 (26.Nd2 Nce5 27.N6e4 f5-+) 26...Qf2 (better 26...Qd5 27.Nc2 Ra2 28.Kc1-+) 27.Qf2 Nf2 28.Nf3 (28.Kc2 Ra2 29.Kc1 Ra1 30.Kd2 Ne5-+) 28...Nd1 29.Kc2 Ne3 30.Kd3 Rd8 31.Ke3 Rd6 32.Ke4 (32.Ke2 Re6 33.Kd2 f6-+) 32...b5 (better 32...Re6 33.Kd3-+) 33.Ne5 (33.Ke3 Re6 34.Kd2 f6-+) 33...Ne5 (better 33...Re6!? 34.Kf4 Ne5 35.Ke4-+) 34.Ke5 Rd3 35.c4 bc4 36.Ke4 Rd8 (36...Rd8 37.Ke3 c3 38.h5 c2 39.Kf3 c1Q 40.Ke2 Qc2 41.Ke3 Rd3 42.Kf4 Qc4 43.Ke5 Rd5) 0-1. chessbit (1935) - Hviktor1971 (1905), Rated Rapid game, lichess.org, 2020.

7.Ne5 Bb4 8.Nd2 Qd2 (8...Ne4! 9.Nec4 Bc3+/–) 9.Qd2+/– Bd2 10.Kd2 Ne4 11.Ke1 f6 12.Bd3 Nd6 13.Nc4 (13.Nf3 a6 14.a4 Bf5 15.Bf5 Nf5+/–) 13...Nb5 14.a4 (14.Rd1 Be6+/–) 14...Nd6 15.Nd6 cd6 16.Rb1 b6?? (better is 16...Nc6+=) 17.Be4+– 1–0. GuestXQQG – VelikiBrat, freechess.org, 2018.

6.de3 Bg4

7.Bc4 Bb4 8.Nbd2 Bf3 (8...Qe7 9.a3 Bd2 10.Qd2 Bf3 11.gf3=) 9.gf3 Bd2 (9...Nd7 10.Rg1 Qh4 11.Rg4 Qh2 12.Rg7=) 10.Qd2+= Qf6?? (better 10...Qd2 11.Kd2 Nd7+=) 11.0-0-0+– Nh6 (11...Qd6 12.Be5!! Qd2 13.Rd2 Nf6+–) 12.Be5!! (12.Be5 Qe7 13.Bg7+–) 1–0. GuestLYRF – GuestXLJX, freechess.org, 2020.

7.Bc4 Ne7 8.Bf7!+/- Kf8 (8...Kf7 9.Ne5 Double attack) 9.0-0 (9.Bc4 Bb4 10.Nbd2 Nd7+-) 9...Nf5 (9...Kf7 10.Ng5 Ke8 11.Qg4 Qd7+-) 10.Bc4 g6?? (better 10...Qf6 11.h3 Bf3 12.Qf3 c6+-) 11.Qd5 (11.Be5?! Bf3 12.Bd6 Nd6 13.Qf3 Kg7+-) 11...Qf6 (11...Qe8 12.Ne5 c6 13.bc6 bc6 14.Qf7 Qf7 15.Nf7+-) 12.Ne5 Be5 (12...Ne7 13.Ng4 Bh2 14.Kh1 Nd5 15.Nf6+-) 13.Be5 Ne7 (13...c6 14.bc6 bc6 15.Bf6 cd5 16.Bd5 Nd7 17.Bh8 Rc8+-) 14.Qd8 (14.Qd8 Kg7 15.Qe7 Kh6 16.Qf6 Kh5 17.g3 Kh6 18.Bf4 Kh5 19.Qg5) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Nf6 8.0-0 0-0 9.h3+/- Bh5 (9...Bf3 10.Qf3 e4 11.Qe2+=) 10.g4 Ng4 (10...Bg6 11.Ne5 Nbd7 12.Ng6 hg6 13.Nc3+/-) 11.hg4 Bg4 12.Bd5 (better 12.Qd5!? Be6 13.Qe4 (13.Qb7?! Bc4 14.Qa8 Qd7=) 13...Bc4 14.Qc4+/-) 12...c6+= 13.Be4 (better 13.bc6 bc6 14.Bc4=) 13...f5-/+ 14.Bd3 (14.Bd5 cd5 15.Qd5 Kh8 16.Ne5-/+) 14...e4 (better 14...Rf6!? 15.Bc4 Kf8 16.Be5 Bf3 17.Bf6 Bh2 18.Kh2 Qc7 (18...Bd1?? 19.Bd8 Bc2 20.Nc3+-) 19.Kh3 Bg4 (19...Bd1?! 20.Rd1 gf6 21.Rg1-+) 20.Kg2 Bd1 21.Rd1 gf6-+) 15.Bc4= Kh8 16.Qd4 (16.Be5 Nd7 17.Bd6 Bf3-+) 16...Qe7=+ 17.Ne5 Be5 (better 17...Bh3!? 18.f4 Bf1 19.Kf1 cb5 20.Bb5 Be5 21.Qe5 Qf7=) 18.Qe5+/- Qg5 19.Qg3 (19.Qf4 Qg6 20.Qg3 cb5 21.Bb5=) 19...Nd7 (better 19...cb5!? 20.Bb3 Nc6+=) 20.bc6 bc6 21.Be2! Nf6 (21...Be2 22.Qg5 Pinning (22.Qg5 Deflection)) 22.Nd2 Nh5 (22...h5!? 23.Kg2 Qh6 24.Bg4 Ng4+/-) 23.Qg2+- Qh4? (better 23...Qg6 24.Bg4 fg4 25.Ne4 Rfe8+-) 24.Bg4 fg4 25.Ne4 Rf3 (25...Rab8 26.Rab1 Kg8 27.Bd4+-) 26.Nd2 (26.Rab1 Rd8+-) 26...Rh3 27.Be5 Re8 (27...Rd8 28.Rab1+-) 28.Rab1 1-0. GuestPCMQ – Mutahd, freechess.org, 2020.

7.Bc4 Nf6 8.0-0 e4 9.h3 ef3 (9...Bh5 10.g4 Bg6 11.Nh4=+) 10.hg4= fg2 11.Kg2 Qd7 (11...Nbd7 12.g5 Ne4 13.f4+–) 12.f3 (12.Bf6 gf6 13.Rh1=) 12...c6 (better 12...Qe7!?=) 13.g5+– Nd5 14.Bd5 cd5 15.Qd5 (worse 15.Bg7 Rg8 16.Qd4 Qf5=+ (worse 16...Qb5 17.Nc3 Qc6 18.Rad1+=)) 15...0-0 (15...Be7 16.Rd1+–) 16.Qd4 (16.Rd1 Rd8+–) 16...f6 (16...f5 17.Rd1 Rd8 18.Qd5 Kh8 19.Na3+–) 17.Qd5+– Kh8 (better 17...Rf7 18.gf6 gf6 19.Bf6 Kf8+–) 18.Rd1 Rd8 (18...Be5 19.Be5 Qd5 20.Rd5 fe5 21.Re5 Nd7+–) 19.gf6 gf6 (19...Bf8 20.Qe5 Re8 21.Rd7 Re5 22.fg7 Kg8 23.gf8Q Kf8 24.Rb7 Re3 25.Rh7 Re2 26.Kf1 Re3+–) 20.Bf6 (20.Bf6 Qg7 21.Bg7 Kg7 22.Qg5 Kf7 23.Qd8+–) 1–0. DEFFM – GuestGFFW, freechess.org, 2020.

7.Bc4 Nf6 8.Nbd2 Nbd7 9.h3 Bh5 10.0-0 (10.g4!? Bg6 11.g5=) 10...e4=+ 11.g4 Ng4 (11...Bg6!? 12.Nh4 Ne5=+) 12.Ne4+= Nge5 13.Be2 0-0 14.Nd6 Nf3 (14...cd6 15.Ne5 Be2 16.Nf7 Rf7 17.Qe2+=) 15.Bf3+/- Bf3 16.Qf3 cd6 17.Qb7 Ne5 18.f4 Nc4 19.Bd4 d5 20.Kh2 (20.Rf2 f6+/-) 20...Rb8+= 21.Qa7 Ra8? (21...Re8!?+=) 22.Rg1 (22.Qc5 Qd7 23.Rg1 f6+/-) 22...g6 (22...Ra7?? 23.Rg7 Kh8 24.Rg8 Kg8 25.Rg1 Qg5 26.Rg5) 23.Qb7 (23.Qc5 Nd2 24.c4 Nf3 25.Kg3 Ng1 26.Rg1 dc4 27.Qc4 Re8+/-) 23...Na5 (better 23...Re8!?+=) 24.Qb6+- Qb6 25.Bb6 Nc4 26.Bd4 Nd2? (better 26...Na3 27.b6 Rfb8+-) 27.Rgd1 Ne4 28.a4 Rfc8 29.Ra2 Rc4 (29...Rcb8+-) 30.a5 Rac8 (30...Nd6 31.Rb1 Rcc8+-) 31.a6 Rc2 (31...Nc5+-) 32.Rc2 Rc2 33.Kg1 Ng3 (33...Rc8+-) 34.Ra1 Ne2 35.Kf1 Ng3 36.Ke1 Ne4 37.a7 Nc3 (37...Kf8 38.a8Q Ke7 39.Ra7 Rc7 40.Rc7 Ke6 41.Qd8 Kf5 42.Qd5) 38.a8Q 1-0. onur604 (2320) - Eminem10 (1955), lichess.org, 2020.

7.Bc4 Nf6 8.Nbd2 e4 9.Bf6+- Qf6 (9...ef3 10.Bd8 fg2 11.Rg1 Bd1 12.Rd1 Kd8 13.Rg2+/-) 10.Ne4 Qg6 11.Bd5 c6?? (11...Nd7 12.Bb7 Rb8 13.Nd6 cd6+-) 12.Nd6 Ke7 (12...Qd6 13.Bc6! Ke7 14.Qd6 Kd6 15.Bb7+-) 13.bc6 (13.Nf7 Qf6 14.Nh8 cd5+-) 13...bc6 14.Nf7 Rf8 (14...cd5 15.Nh8 Qf6 16.Rb1 Qc3 17.Qd2 Qd2 18.Kd2+-) 15.N7e5 Qd6 16.Be4 Qb4 (16...Bf3 17.Nf3 Qb4 18.Nd2+-) 17.Qd2 Qe4 (17...Qd2 18.Nd2 Bf5+-) 18.0-0-0 Bf3 (18...Nd7 19.Qd6 Ke8+-) 19.Qd6 Ke8 20.Qe6 1-0. GuestGHVY – GuestJVLW, freechess.org, 2020.

7.Bd3 Nf6 8.Nbd2 0-0 (8...Nbd7 9.h3 Be6 10.Qe2=) 9.0-0 (better 9.h3 Bh5 10.g4+=) 9...c5? (better 9...Nbd7!?+=) 10.Nc4 (10.h3 Bh5 11.g4 Bg6 12.Bg6 hg6+-) 10...Bc7 11.Nce5 (11.h3 Bh5 12.g4 Bg6 13.Nfe5 Bd3 14.Qd3 Qd3 15.Nd3 Nbd7+-) 11...Be5+/- 12.Be5 Nbd7 13.Bf4 (13.Bb2 Qe7+/-) 13...Nb6 14.h3 (14.Bd6 Bf3 (14...Qd6?? 15.Bh7 Kh7 16.Qd6+-) 15.gf3 Re8 (15...Qd6 16.Bh7 Nh7 17.Qd6+-) 16.Bc5 Nfd5+-) 14...Bh5 15.g4 (15.Be5 Re8 16.g4 Bg6+/-) 15...Bg6 16.Bg6 fg6 (16...hg6 17.Bd6 Re8 18.Bc5+/-) 17.Bd6+- 1-0. GuestNBFV – GuestLJFT, freechess.org, 2020.

7.Bd3 Nf6 8.h3 Bd7 (8...Bh5!?+=) 9.Ne5+/- Be5 (9...Be6 10.0-0+/-) 10.Be5+- 0-0 11.Qf3 c6 12.a4 Be6 (12...Re8 13.Bf6 Qf6 14.Qf6 gf6 15.Nd2+-) 13.Bf6 (13.0-0 Re8+-) 13...gf6 (better 13...Qf6!? 14.Qf6 gf6+/-) 14.0-0+- Kh8 (14...Nd7 15.Rd1 Ne5 16.Bh7 Kh8 17.Qh5+-) 15.Qe4 (15.Qh5 f5 16.Bf5 Bf5 17.Qf5 Qd6+-) 15...f5 16.Qe5 Kg8 17.Bf5 Nd7 18.Qg3 Kh8 19.Be6 fe6 20.bc6 bc6 21.Qd6 Rg8 22.Qe6 Nf6 (22...Qg5 23.Qc6 Rac8 24.Qf3+-) 23.Nc3 Nh5 (23...Rg6 A) 24.Qc6?! Rc8 25.Rad1 Qf8+= (25...Rc6?? 26.Rd8 Rg8 27.Rd3+-); B) 24.Rfd1 Qg8 25.Qg8 (25.Qc6?! Rc8 26.Qf3 Rc3+/-) 25...Rag8 26.g3+-) 24.Qe5 (24.Rab1 Qg5 25.g4 Rae8 26.Qc6 Rc8+-) 24...Ng7 (24...Qf6 25.Qf6 Nf6 26.Rfd1+-) 25.Rfd1 Qh4 (25...Qe8 26.Qe8 Ne8 27.Rd7+-) 26.Rd4 Qh6 (26...Qh5 27.Qh5 Nh5 28.Rd6+-) 27.Rd6 Qh4 28.Rc6 Rae8 29.Qc5 Rgf8 (29...Ne6 30.Qd5 (30.Qa7?? Ref8 31.e4 Qh3-+) 30...Qh3 31.Qe5 Ng7 32.Qd4+- (worse 32.gh3 Re5 33.Rd1 Re6+-)) 30.Rf1 Nf5 (30...Rf6 31.Rf6 Qf6 32.Nd5+-) 31.e4 Ng3 (31...Ng7+-) 32.Qd4 Kg8 33.Rc7 (33.Rc7 Ne2 34.Ne2+-) 1-0. DEFFM – GuestMFHL, freechess.org, 2019.

7.Be2 Qe7 8.0-0 (8.Nc3 Nf6 9.Nd5 Nd5 10.Qd5 Nd7 11.Qb7 0-0+=) 8...Nd7+= 9.Nc3 (9.h3 Bf5=) 9...0-0-0 (9...Ngf6 10.Nd2 Be6 11.Nde4=) 10.Nd5+= Qe6 (10...Qe8 11.Ng5 Be2 12.Qe2+=) 11.Ng5 Be2 12.Ne6 Bd1 13.Nd8 Be2?? (better 13...Bh5 14.g4 Bg6+=) 14.Nf7+- Bf1 (14...Bb5 15.Rfd1+-) 15.Kf1 (15.Nh8 Bc4 16.Nc3 Bf8+/-) 15...Ne7 (15...Ngf6 16.Nf6 Rf8 17.Nd7 Kd7 18.Ne5 Ke7 19.Ke2+-) 16.Ne7 Be7 17.Nh8 Kd8 (17...Nb6 18.Nf7+-) 18.Nf7 (18.Nf7 Ke8 19.Ne5+-) 1-0. DEFFM – GuestSCLJ, freechess.org, 2019.

7.Be2 Bf3 8.Bf3+/– c6 9.0-0 Nf6 (9...a6 10.Qd2 ab5 11.c4=) 10.Nc3 (10.Nd2 Qe7+/–) 10...0-0 (10...a6 11.a4+=) 11.bc6 Nc6 12.Nd5 (12.Ne4 Ne4 13.Be4 f5 14.Bd5 Kh8+=) 12...Nd5 (12...Rc8 13.Rb1=) 13.Bd5+= Ne7 14.Bb3 (14.Bb7? Rb8 15.Be5 Be5 16.Qd8 Rfd8–+) 14...Qc7 15.Qh5 a5 (15...Rad8=) 16.f4 (16.a4 Rad8+=) 16...e4 (better is 16...ef4 17.a4 Bc5= (17...fe3 18.Rf7 Nd5 19.Rc7 Bc7 20.Bd5 Kh8 21.Be4 Rf5 22.Bf5 Bh2 23.Kh2 Kg8 24.Bh7 Kh8 25.Bg6 Kg8 26.Bf7 Kf8 27.Ba3)) 17.Bg7?? (better is 17.Qg5 Ng6 18.Bd4+/–) 17...Kg7–+ 18.Qg5 Kh8 19.Qf6 Kg8 20.c4 Qb6 21.Kh1 Ra6 22.Rac1?? Qc5 23.Qg5 Kh8?? 24.Qc5?? Bc5–+ 25.Bc2 Nf5 26.Be4 Ne3 27.Rf3 Rg8 28.Rh3 f5 29.Bd5 Rg7 30.Rb1 Ng4 31.g3? Nf2 32.Kg2 Nh3 33.Kh3 b6 34.Be6 Re7 35.Bf5 Re2 36.Rd1 Ra7 37.Rd8 Kg7 38.Bg4 Ra2 39.f5 Bg1 40.f6 Kf6 (41.Rd6 Ke7 42.Re6 Kf7–+) 0–1. dale4 – Kvile3, Live Game Caissa's Web, 2005.

7.Be5 Bf3 8.Qd4 Ne7 9.gf3 Be5 10.Qe5 0-0+/–.

7.h3 Bb4 8.Nc3 Qd1 9.Rd1 Bf3 10.gf3 Nf6+/-.

7.h3 Bf3 8.Qf3 c6 9.Nd2 Qf6 (9...Nf6 10.0-0-0 Qe7 11.Nc4+/-) 10.0-0-0 (10.Qg4 Ne7+/-) 10...Qf3 (better 10...Bc7!?+=) 11.Nf3+- (11.gf3?! f6+=) 11...Bc7 12.Be5 Be5 13.Ne5 c5? (better 13...Nf6 14.Bc4 Rf8+-) 14.Bc4 Nh6 15.Bd5 b6 (15...a5+-) 16.Ba8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.h3 Bf3 8.Qf3 Nd7 9.Qb7 Ngf6 10.Be2 Nc5 (10...0-0 11.0-0+/–) 11.Qc6 Nfd7 12.0-0 0-0 13.Rd1 Qf6 14.a4 Qf5 (14...Qg6 15.Rd2+/–) 15.Bd3 (better is 15.Bg4!? Qc2 16.Rd2+–) 15...e4+/– 16.Be2 Rab8 17.Bg4 Qg5 18.Bd7 Rb6 19.Qd5 Qd5 20.Rd5 Nd7 21.Nc3 (better is 21.Nd2!? Re8 22.Nc4+–) 21...Nf6+/– 22.Rd2 Be5 23.Rad1 Rd6 (23...c6 24.Nd5 Bb2 25.Nb6 ab6 26.bc6+/–) 24.Rd6 cd6 25.Ba1 (25.f4 ef3 26.gf3 Rc8+/–) 25...Rc8+– 26.Ne2 (better is 26.Nd5 Nd5 27.Be5 Ne3 28.Rd6+/–) 26...Rc2?? (26...Ba1 27.Ra1 Rc2+=) 27.Nd4?? (better is 27.Be5 Re2 28.Rd6+–) 27...Ra2= 28.f4 (28.Nb3 Ba1 (28...Ra4 29.Be5 Ne8 30.Bd6+–) 29.Ra1 Ra1 30.Na1 Kf8+=) 28...Bd4?? (28...ef3 29.gf3 Nd5–/+ (29...Ra4?! 30.Rc1 h5 31.f4 Bd4 32.Bd4+=)) 29.Bd4+= Ra4 30.Bf6 gf6 31.Rd6 Kg7 32.Kf2 Rb4 33.Rd5 Rb3 34.g4 Ra3 (34...Rb2 35.Kf1+=) 35.h4 (35.Rd4 f5+/–) 35...Rb3 36.Rc5 Rb2 37.Kg3 Rb3 38.Kf2 Rb2 39.Kg3 Rb3 40.Kf2 (40.f5 Re3 41.Kf4 Rb3+=) 40...Rb1 (40...Rb2 41.Ke1=) 41.Rd5 Rb2 (41...Rb3 42.h5+=) 42.Kg3+= Rb3 43.Kf2 Rd3?? (better is 43...Rb2 44.Ke1 Rg2=) 44.Ke2?? (better is 44.Rd3 ed3 45.e4+–) 44...Rd5–+ 0–1. GuestNDHS – GuestCQFV, freechess.org, 2017.

7.h3 Bf3 8.Qf3 Nf6 9.Qb7 Nbd7 10.Be2 0-0 11.0-0 (11.Nc3 Nc5 12.Qc6 Rb8+/-) 11...Nc5 12.Qc6 h6 (12...Rb8 13.Rd1 Rb6 14.Qf3+=) 13.Nd2 (13.Rd1 Qe8 14.Qe8 Rfe8+-) 13...Nh7 (13...Na4!? 14.Nc4 Nb2 15.Nb2 Qe8+-) 14.Rad1 Qh4? (14...Qe7+-) 15.Nc4 Rad8 (15...Nf6 16.Be5 Be5 17.Ne5+-) 16.Be5 (worse 16.Ne5 Qa4 17.Bd4 Ne6+-) 16...Be5 17.Rd8 (17.Ne5?! Rd1 18.Rd1 Ne4+-) 17...Rd8 (17...Qd8 18.Qc5 Bf6 19.Rd1+-) 18.Qc5 (18.Qc5 Bd6 19.Nd6 Rd6 20.Qc7+-; worse 18.Ne5 Qe7 19.f4 Ng5+-) 1-0. GuestBRJM – GuestYMTW, freechess.org, 2020.

7.h3 Bh5 8.g4+/- Bg6 9.Ne5 (9.Be5 Nf6 10.Bd6 cd6 11.Bd3+/-) 9...Nf6 (9...Be4!? 10.Nc4 Bb4 11.Nbd2 Nf6+/-) 10.Ng6 (10.Bg2 Bb4 11.Nc3 Qd1 12.Kd1 c6+-) 10...hg6+/- 11.Bg2 c6 12.Nd2 0-0 13.Nc4 Be7 (13...Bb4!? 14.c3 Qe7+-) 14.Qd8 Rd8 15.Ne5 a6 (15...Bb4 16.c3 Bc5 17.Rd1 Rd1 18.Kd1+-) 16.bc6 bc6 17.Bc6 (17.Nc6?! Nc6 18.Bc6 Rac8+/-) 17...Nc6 18.Nc6 Rd7 19.Rd1 (19.Ne7 Re7 20.Bf6 gf6+-) 19...Rc7 (19...Rd1 20.Kd1 Kf8 21.f3+-) 20.Ne7 Re7 21.Bf6 gf6 22.Rd3 Rb8 23.Rb3 Rc8 24.c3 Rd7 25.0-0 (25.Ke2 Kg7+-) 25...Rd2 26.Ra3 Rc2 (26...Rc6 27.Rb1+-) 27.Ra6 R2c3 28.Rb1 R8c7 (28...R3c6 29.Ra7+-) 29.Rbb6 (worse 29.Rf6 Ra3+-) 29...Rc1 30.Kg2 f5 31.gf5 gf5 32.Rf6 R1c5 33.h4 Rd5 34.h5 (34.a4!? Re5+-) 34...f4 35.Rf4 Rh5 36.Ra8 Kg7 37.a4 Rg5 38.Kf3 Rg6 39.a5 Rg5 40.Rg4 (40.Rg4 Rg4 41.Kg4+-) 1-0. onur604 (2285) - Misuka (2145), lichess.org, 2020.

7.Be2 Nd7

8.0-0 Be6 9.Nbd2 Ngf6 10.Ng5 Bd5 (10...0-0 11.Ne6 fe6 12.c4+=) 11.c4 Be6 (11...h6 12.cd5 hg5 13.Qc2+=) 12.Ne6 fe6 13.Bh5 (13.Qc2 0-0+/-) 13...g6 14.Bf3 Nc5 15.Nb3 (better 15.Qc2+/-) 15...Nb3? (better 15...Nfd7!?+=) 16.Qb3 (better 16.ab3 Qc8 17.Qc2+-) 16...Rf8? (better 16...e4 17.c5! Kf7 18.cd6 ef3 19.Bf6 Qf6 20.dc7 Rhc8+-) 17.c5 Bc5 18.Bb7 (18.Bb7 Kf7 19.Ba8 Qa8 20.Be5+-) 1-0. DEFFM – GuestHJDG, freechess.org, 2019.

8.0-0 Ngf6 9.Na3=.

8.0-0 h5 9.h3 (9.Nbd2 Ngf6+=) 9...Be6 10.c4 (10.Nbd2 Ngf6+/-) 10...g5 11.c5 Nc5 12.Ne5 f6?? (better 12...Nf6 13.Nd2 g4+=) 13.Bh5+- Kf8 (13...Rh5 14.Qh5 Ke7 15.Ng6 Kd7 16.Ba3+-) 14.Ng6 Kg7 15.Nh8 Kh8 16.Bg6 Bc4 (16...g4 17.hg4 Kg7+-) 17.Qh5 Kg7 18.Rc1 Be6 19.Qg5 Kf8 (19...Nd7 20.Qh5 Ne5 21.Be4+-) 20.Qh5 Nd3 (20...Na4 21.Bd4 a6+-) 21.Bd3 1-0. GuestGHVY – GuestBLZZ, freechess.org, 2020.

8.Nbd2 Ngf6 9.0-0 0-0 10.Ng5 Be2 11.Qe2 h6 12.Nge4 Be7 (12...Qe7 13.Rfd1=) 13.Rad1 (13.Rfd1 Qe8+=) 13...Qc8 (13...Qe8 14.f4 ef4 15.ef4+=) 14.Nf6+/- Bf6 15.Ne4 Qe8?? (better 15...Be7+/-) 16.Qg4+- a6 (16...h5 17.Qd7 a6 18.Nf6 gf6 19.Qf5+-) 17.Rd7 h5 (17...Qe6 18.Nf6 Qf6+-) 18.Nf6 (18.Nf6 Kh8 19.Qh5) 1-0. GuestBZDR – GuestBXCW, freechess.org, 2019.

8.Nbd2 Ngf6 9.Ng5 Be2 10.Qe2 0-0 11.h4 (11.0-0!?=) 11...a6=+ 12.a4 c6 13.Nde4 Bb4 14.c3 Ba5 (14...Be7 15.Nf6 Nf6 16.0-0=+) 15.Rd1 (15.Ba3 c5 16.ba6 Ra6=+) 15...Qe7 16.Qd3 (16.bc6!? bc6 17.Qc4=+) 16...Ne4-/+ 17.Qe4 (better 17.Ne4 Nc5 18.Qc2 Ne4 19.Qe4 ab5 20.ab5-/+) 17...f5 (17...Nf6 18.Qc2-/+) 18.Qf3 (better 18.Qc4 Kh8 19.bc6 bc6 20.Qc6=) 18...ab5 19.Qh5 (better 19.ab5 e4 20.Qh5-/+) 19...g6?? Black prepares e4 (19...Nf6 20.Qf3-+) 20.Qh6?? (20.Qh7!? Qh7 21.Nh7+=) 20...Rad8 (20...Nf6 21.ab5 cb5-+) 21.Ba3?? (better 21.h5!? Nc5 22.hg6 Rd1 23.Kd1 Qd6 24.Ke2 Qd3 25.Kf3 e4 26.Kg3 Qd6 27.f4 ef3 28.Kf3 Qd5 29.Kf2 Qd2 30.Kf3 Qd5 31.Kf2 Qd2 32.Kf3 Qd5=) 21...c5 (21...Bc3 22.Ke2 b4 23.Rc1 ba3 24.Rc3-+) 22.Rd6?? (22.h5 Bc3 23.Ke2 gh5 24.Ne6-/+) 22...Bc3-+ 23.Kf1 (23.Ke2 Nf6 (23...ba4?! 24.Rhd1 e4 25.h5=+) 24.Rf6 Rd2 25.Kf3 e4 26.Kg3 Rf6 27.Bc5 Qc7 28.Kh3 ba4-+) 23...e4 (better 23...Nf6 24.Rd8 Rd8-+) 24.Re6 Qg7 25.Qg7 Kg7 (25...Bg7 26.ab5 h6 27.Rg6 hg5 28.Bb2-+) 26.Rd6? (better 26.ab5 Rfe8 27.Ke2-+) 26...Nf6?? (26...Rf6 27.Rf6 Kf6 (27...Bf6?! 28.Ne6 Kf7 29.Nd8 Bd8 30.ab5=) 28.ab5 h6-+) 27.Rd8 (27.Ne6 Kh6 28.Nd8 ba4 29.Bc5 b5+-) 27...Rd8+/- 28.Ne6 Kf7 (better 28...Kg8!? 29.Nd8 ba4 30.Nb7 Bb4+-) 29.Nd8 Ke7 30.Nb7 b4 31.Bc1 b3 32.Nc5 (32.Ke2 Bb4+-) 32...b2 33.Bb2! Bb2 34.Ke2 1-0. chessbit (1900) - vadimalekperov (1945), Rated Rapid game, lichess.org, 2019.

8.h3 Bh5 9.Nbd2 h6 (9...Ngf6 10.Nc4 Qe7 11.0-0=) 10.Nc4 The pressure on e5 grows 10...Bb4 (10...e4!? 11.Nfd2 Be2 12.Qe2 Ngf6=) 11.c3+/- Bc5 12.Nfe5 Be2 13.Qe2 (13.Ke2 Ngf6+/-) 13...Ne5+= 14.Ne5 Nf6 (14...Qg5 15.Nf3 Qg2 16.0-0-0+/-) 15.c4 (15.Qf3 Rb8+/-) 15...Bb4 16.Kf1 Qe7 17.Ng4 Ne4 18.Bg7 Nd2? (better 18...Rh7 19.Bd4 0-0-0+/-) 19.Kg1+- Rg8 (19...0-0-0+-) 20.Nf6 Qf6 21.Bf6 Rg6 22.Bd4 Kd7 (22...Ne4 23.Qf3 Re6 24.Kh2+-) 23.Rd1 Ne4 (23...Rag8 24.g3+-) 24.Bc5 (24.Bc5 Ke6 25.Bb4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 e4

6.Nd4 c5? 7.Nf5!+- Nf6 (7...Bf5 8.Bg7 Combination) 8.Ng7 Kd7 (8...Kf8 9.Nh5 Nbd7 10.d4+-) 9.Nh5 Nh5 10.Qh5 Rf8 (10...f6 11.Nc3 Be5 12.0-0-0+-) 11.Bc4 (11.Bg7 h6 12.Nc3 f5 13.Qh6 Re8+-) 11...Kc7 (11...Qe7 12.Nc3 h6 13.Qh6+-) 12.Bg7 (12.Bf7?! Qe7 13.Bb3 Nd7+-) 12...Qe7 (12...Re8 13.Bf7 (13.Qf7?! Nd7 14.Nc3 Kb8+-) 13...Qe7 14.b6 Kb6 15.Na3+-) 13.Nc3 Be6 14.Bf8 Qf8 15.Be6 fe6 16.Qh7 Nd7 17.Ne4 Re8 18.f4 (18.Rd1 Re7 19.Qg6 Be5+-) 18...Kc8 (18...Re7 19.Qh3+-) 19.0-0 (better 19.Qf7! Be7 (19...Qf7?? 20.Nd6 Kc7 21.Nf7+-) 20.Qf8 Rf8+- (20...Nf8?? 21.h4+-)) 19...Nf6 20.Qg6 (20.Nd6 Qd6 21.Qd3 Qe7+-) 20...Ne4 21.Qe4 Qh8 (21...Qh6 22.a4 Rh8 23.h3+-) 22.a4 e5 23.f5 Kb8 24.f6 (24.a5 Re7+-) 24...Rf8 25.a5 Rf6 (25...Rf7+-) 26.a6 Rf1 27.Rf1 ba6 28.ba6 Kc8 29.Rf7 Qe8 (29...Qg7 30.Qb7 Kd8 31.Qd7) 30.Qb7 Kd8 31.Qa8 Bb8 32.Qb8 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.Nd4 Be5 7.Qh5 (better 7.Na3+-) 7...Qf6? (7...Nd7 8.f4 ef3 9.Qf3+=) 8.f4?? (better 8.Nc3+-) 8...g6?? (better 8...ef3 9.Qf3 c5 10.bc6 Qf3 11.gf3 Nc6+/-) 9.Qe5+- Qe5 10.fe5 1-0. DEFFM – GuestHYNR, freechess.org, 2019.

6.Nd4 Nf6 7.Bc4 0-0 (better 7...c5 8.Ne2 Nbd7+=) 8.0-0?? (8.Nc3+=) 8...Ng4?? (better 8...Bh2 9.Kh2 Ng4 10.Kg3 Qd6 11.f4 ef3 12.Kf3 Ne5 13.Kf2 Nc4=+) 9.g3 (9.h3 Nh2 10.Nc3 Nf1 11.Ne4 Ne3 12.de3 Nd7+=) 9...Nf6 10.d3 Bg4 11.Ne2 (better 11.Qc1 ed3 12.cd3+/-) 11...Bf3? (better 11...ed3 12.cd3 a6+=) 12.Nd2+- Qd7? (12...Nbd7 13.Nf3 ef3 14.Nc1+-) 13.Nf3 (13.Bf6 gf6 14.Nf3 ef3+-) 13...ef3 14.Nf4 Bf4 15.ef4 (15.Qf3 c6 16.bc6 Nc6 17.Qf4 Qe7+-) 15...Qg4?! (15...c6 16.a4 (worse 16.Qf3 cb5 17.Bb3 Nc6+-) 16...Qg4 17.Bf6 gf6 18.Re1+-) 16.Re1 (better 16.Bf6!? gf6 17.Bd5 Qc8+-) 16...Nbd7 17.Re3 Qh3? (better 17...Rae8 18.Rf3 Qh3+-) 18.Qf3 Ng4 19.Qg2?? (better 19.Re7 Qh2 20.Kf1 Qh3 21.Qg2 Qg2 22.Kg2+-) 19...Qh5?? (better 19...Qg2 20.Kg2 Ne3 21.fe3 Nb6+/-) 20.Re4 (20.Re7 Nb6 21.Bb3 Qc5+-) 20...Ndf6 (20...Rfe8 21.h3 Ngf6 22.Re8 Re8 23.Qb7+-) 21.Bf6 (21.h3 Nf2 22.Kf2 Ne4 23.Qe4 Rae8+-) 21...Nf6 (21...gf6 22.h3 Nh6 23.d4+-) 22.Re5 Qg4 (22...Qh6 23.Re7 Ne8 24.Qb7+-) 23.h3 (23.Qb7!? Qc8 24.Qc6 Qd7+-) 23...Qd7 (23...Qc8 24.Rae1+-) 24.Kh2 (24.Qb7 Qh3 25.Re7 Rac8+-) 24...h6? (24...c6+-) 25.Qb7 Rae8 (25...Qd4 26.Rf1 Qb6 27.Qf3+-) 26.Rae1 (26.Qa7 Qd6 27.Rae1 g6+-) 26...h5 (26...Qd4 27.Kg2 Qb6 28.Qc6+-) 27.Re8 (27.Qa7 Qd6+-) 27...Ne8 (27...Re8 28.Re8 Ne8 29.Qa7+-) 28.Qa7 Nd6 (28...h4 29.a4+-) 29.Qd4 Qf5 (29...Qd8 30.a4 Qa8 31.Bd5+-) 30.Qe5 (30.a4 h4+-) 30...Qg6 (30...Qd7 31.Qe7 Qc8 32.Re5 Nc4 33.dc4+-) 31.Qc5 Kh8 (31...Nc4 32.Qc4 Qb6 33.d4+-) 32.Qc7 h4 33.g4 f5 (33...Rc8 34.Qd7 Qf6+-) 34.g5 (better 34.Re6 Nb5 35.Qe7+-) 34...Qh5 (34...Ne8 35.Qe7 Qd6+-) 35.Qd6 Ra8 36.b6 Qf3 37.Qd4 Ra4 (37...Qc6 38.Re7 Qg6 39.b7 Rf8 40.Qb2 Kh7 41.b8Q Qf7 42.Rf7 Rg8 43.Re7 Kg6 44.Qg8 Kh5 45.Qh7) 38.Qe3 (38.Qd8 Kh7 39.Qg8 Kg6 40.Bf7) 38...Qb7 (38...Qe3 39.Re3 Ra8 40.b7 Rf8 41.Bf7 Kh7 42.Re7 Rb8 43.Re8 Re8 44.Be8 g6 45.b8Q Kg8 46.Bg6 Kg7 47.Qd8 Kg6 48.Qe7 Kh5 49.Qe8) 39.Qe8 (39.Qe8 Kh7 40.Qh5) 1-0. GuestXMGT – margono, freechess.org, 2020.

6.Nd4 Nf6 7.Be2 0-0 8.0-0 c5 9.bc6 Nc6 10.Nb5 (10.f3 Nd4 11.Bd4 ef3 12.Bf3 Qc7 13.Bf6 Bh2 14.Kh1 gf6+/-) 10...Be5 (10...Bb8 11.f3+=) 11.Be5+/- Ne5 12.d4 (12.Nd4 Qc7+/-) 12...ed3 13.cd3 Neg4 (13...Re8 14.Nd2+/-) 14.h3 Ne5 15.d4 Ng6 (15...Nc6 16.Bf3+/-) 16.Qd3 (16.Bd3 Be6+/-) 16...a6 17.N5c3 Nh4 (17...b5 18.Rd1+/-) 18.Nd2 (better 18.Rd1+/-) 18...Bh3? (better 18...b5+/-) 19.gh3+- Nd5 (19...b5 20.Rac1+-) 20.Nd5 Qd5 (20...Qg5 21.Bg4 Qd5 22.e4+-) 21.Qe4 Qg5 22.Qg4 Qg4 (22...Qe7 23.Rac1+-) 23.hg4 f5 (23...Rac8 24.Ne4+-) 24.Rab1 (24.Bc4 Kh8+-) 24...b5 25.Nf3 (25.Rfc1 Rac8+-) 25...Nf3 26.Bf3 fg4 (26...Rad8 27.Bb7 Rd6 28.gf5 Rf5 29.Rfc1+-) 27.Bd5 Kh8 28.Ba8 Ra8 29.Rfc1 h5 30.Rc7 (30.Rc3 Rf8+-) 30...h4 (30...Kh7 31.d5+-) 31.Rc5 (31.Rb4 g5+-) 31...g3 (31...Kg8 32.Rg5 Rc8 33.Rg6+-) 32.Rh5 (32.fg3 Re8+-) 32...Kg8 33.Rh4 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.Nd4 Nf6 7.Be2 Nbd7 8.Nf5 0-0 (8...Be5 9.Be5 Ne5 10.Ng3+/-) 9.Nd6 cd6 10.0-0 d5 11.d3 ed3 12.cd3 b6 (12...a6 13.ba6 b6 14.Nd2+-) 13.d4 Ne4 14.Nd2 Ndf6 15.Nf3 h6 (15...a6 16.Ne5+-) 16.Ne5 Be6 (16...a6 17.f3 Nd6 18.a4+-) 17.Rc1 Rc8 18.Qa4 Rc1 (18...Re8 19.f3 (19.Qa7?! Ra8 20.Qc7 Qc7 21.Rc7 Ra2+/-) 19...Nd6 20.Rc8 (20.Qa7?! Ra8 21.Qc7 Qc7 22.Rc7 Ra2+/-) 20...Qc8 21.Rc1+- (21.Qa7?! Qc2 22.Ba3 Nc8=+)) 19.Rc1 (19.Bc1?! Nc3 20.Qc2 Ne2 21.Qe2 Qc7+/-) 19...Qb8 (19...Nd7 20.Qa7 Qa8 21.Qa6 Ne5 22.de5+-) 20.Nc6 Qc7 21.Na7 Qb7 22.Qa6 Qa6 23.ba6 Ra8 24.Rc7 Nd6 (24...Ne8 25.Re7 N8d6 26.Nc6+-) 25.Nc6 Nc4 26.Bc4 dc4 27.a7 Bd5 28.Rc8! Rc8 29.Ne7 Kh7 (29...Kf8 30.Nc8 b5 31.f3+-) 30.Nc8 b5 31.Nd6 Nd7 (31...Ba8 32.Nb5 Ne8 33.Nc3+-) 32.Nb5 Nb6 33.Nd6 Na8 (33...f5 34.f3 Ba8 35.e4+-) 34.e4 Be6 (34...c3 35.Bc3 (35.ed5?? cb2 36.h3 b1Q 37.Kh2 Qa2 38.Nf7 Qf2-+) 35...Ba2 36.d5+-) 35.d5 Bd7 36.Nf7 Kg8 37.Nd6 1-0. DEFFM – GuestKNPS, freechess.org, 2021.

5.e3 Nf6

6.Bc4 0-0 (6...c5 7.ed4 cd4 8.c3=) 7.ed4 e4 (7...ed4 8.Bd4 Re8 9.Be3=) 8.Ne5+= Be5? (better 8...Qe7!? 9.Nc3 c5 10.bc6 Nc6 11.Nc6 bc6=) 9.de5+/- Ng4 (9...Nd5!?+/-) 10.h3 Nh6 11.Qe2 c6 (11...Nd7 12.0-0+-) 12.a4 (12.Nc3 a6 13.bc6 Nc6 14.Ne4 Nf5+-) 12...Qe7 (12...Qg5 13.Qe4 Bf5 14.Qf3 Bc2 15.0-0+-) 13.0-0 (13.Qe4 Nd7 14.bc6 bc6+-) 13...b6?! (13...Bf5+-) 14.bc6 (14.Qe4 Bf5 15.Qe2 Bc2+-) 14...Nc6 15.Qe4 Bf5 (15...Bd7+-) 16.Qc6 Rac8 17.Qb5 Rc5 (17...Bh3 18.Ba3 (worse 18.gh3 Qg5 19.Kh1 Qh4 20.Bf7 Nf7+-) 18...Qg5 19.Bd5+-) 18.Ba3 Qe5 (18...Rb5 19.Be7 (19.Bb5?! Qe5 20.d4 Qd4=) 19...Re5 20.Bf8 Kf8 21.Na3+-) 19.Bc5 bc5 20.Na3 Rb8 (20...Qd4 21.Rfe1+-) 21.Rfe1 Qc7 (21...Rb5 22.Re5 Rb8+-) 22.Re8 Re8 23.Qe8 1-0. GuestNKRJ – GuestRCLR, freechess.org, 2020.

6.ed4 b6?? 7.de5+- Qe7 (7...Be7 8.ef6 Bf6 9.Qe2 Be6 10.Bf6 Qf6 11.Nc3+-) 8.Be2 Bg4 (8...Nbd7 9.ed6 cd6 10.0-0+-) 9.ef6 Qf6 (9...gf6 10.0-0 Nd7+-) 10.Bf6 (10.Bf6 gf6 11.Nd4+-) 1-0. DEFFM – GuestWFTZ, freechess.org, 2020.

6.ed4 ed4 7.Bd4 Bg4 (7...0-0!?+=) 8.Qe2+/- Qe7 9.Qe7 Be7 10.Ne5 0-0 11.Ng4 Ng4 12.Be2 Nh6 (12...Bf6 13.Bf6 Nf6 14.Nc3+/-) 13.0-0 (13.Bb2 a6+/-) 13...Nf5 14.Bb2 Nd7 15.Bg4 g6 16.Bf5 gf5 17.Bd4 (17.Re1 Rfe8+/-) 17...b6 (17...Nc5 18.Nc3 Rad8 19.Ne2+/-) 18.Nc3 Rad8 (better 18...Bf6!? 19.Ne2 Rfe8 20.Bf6 Re2+/-) 19.Nd5+- Bc5 (19...Bd6 20.f4+-) 20.Bb2 (20.Bc3 Bd6+-) 20...Ne5?? (better 20...Rfe8+-) 21.Nf6 (21.Nf6 Kg7 22.Be5+-; 21.Be5?! Rd5 22.Bc3 Re8+=) 1-0. DEFFM – cubaemh, freechess.org, 2019.

6.ed4 e4 7.Ne5 0-0 8.Bc4 Be6 9.Be6+/- fe6 10.0-0 c6 (10...Nbd7 11.f4+/-) 11.a4 (11.Na3 a6 12.ba6 Na6+/-) 11...Qc7 (11...Nbd7 12.bc6 bc6 13.Na3+/- (13.Nc6? Qb6-+)) 12.Na3 c5 13.Nac4 cd4 14.Bd4 Be5 (14...Nbd7 15.Nd6 Qd6 16.Nd7 Nd7 17.Bc3+/-) 15.Ne5 Nbd7 16.Nd7 (16.Nd7 Qd7 17.Bc3+/-) 1-0. DEFFM – GuestMQSM, freechess.org, 2019.

6.ed4 e4 7.Ne5 Be5 8.de5+/- Nd5 9.g3 (9.d3 e3 10.c4 ef2 11.Kf2 Nb6+/-) 9...0-0 10.Bg2 Be6 (better 10...Bf5!?+/-) 11.Be4+- c6 12.a4 (12.c4 Ne7 13.Qc2 h6+-) 12...f6 (12...f5 13.Bg2+-) 13.0-0 (13.c4 Nb4 14.ef6 Nd3 15.Bd3 Qd3+/-) 13...fe5 14.Be5 Bh3?? (14...Nd7 15.Bd6 Re8 16.Bd5 Bd5 17.Nc3+/-) 15.Re1 (better 15.Qh5 h6 16.Qh3+-) 15...Qg5 (15...Bf5 16.Bg2+-) 16.d4 Nd7 (16...Bf5 17.bc6 bc6 18.Bd6+-) 17.Bd6 (17.bc6 bc6 18.c4 Ne7+-) 17...Rf6 18.Ba3 Bg4 (18...Re6 19.c4 N5b6 20.d5 cd5 21.cd5 Re4 22.Re4 Nd5 23.Qd4+-) 19.Qd2 (19.f3!? Bf5 20.bc6 bc6 21.Bd5 cd5+-) 19...Qh5 20.c4 N5b6 21.Qc2 Rh6 22.h4 Nf6 23.Bg2 Bf3 (23...Bf5 24.Qa2 Bd3 25.Nd2+-) 24.Re5 (24.Bf3!? Qf3 25.a5 Nbd7+-) 24...Qg4 25.Rg5 (25.Bf3 Qf3 26.Re7 Qg4 27.Rb7 Rh4+-) 25...Qe4? (better 25...Qd4 26.Bb2 Qc4 27.Qc4 Nc4 28.Bf3 Nb2+/-) 26.Qe4+- Be4 (26...Ne4?? 27.Bf3 Ng5 28.hg5+-) 27.Be4 Ne4 28.Re5 Nf6 29.Nd2 Ng4 (29...Na4 30.bc6 bc6 31.Ra5+-) 30.Re7 Rf8 (30...Na4 31.f3 Nf6 32.Rb7 cb5 33.cb5 a6 34.ba6 Ra6+-) 31.f3 Nf6 32.Rb7 Nh5 (32...Rd8 33.bc6 Nc8 34.d5+-) 33.Bf8 Kf8 34.Kf2 Rd6 35.c5 Nd5 (35...Rd4 36.Nb3 Rd3 37.cb6 ab6 38.bc6 Rb3+-) 36.cd6 (36.cd6 Nhf6 37.bc6+-) 1-0. pumpkin (2340) - naskme (2040), net-chess.com, 2010.

6.ed4 e4 7.Ne5 Be5 8.de5 Bg4 9.Be2 Be2 10.Qe2 (10.Ke2?! Nd5 11.Re1 Qd7+/-) 10...Qd7 (10...Nfd7+-) 11.ef6 gf6 12.Bf6 Rg8 1-0. GuestXJBP – xxa, freechess.org, 2020.

5.e3 Bg4

6.Be2 Qd7 7.Ne5! Be2 (7...Be5 8.Bg4 Discovered attack) 8.Qe2+– Be5 9.ed4 Ne7 10.de5 0-0 11.0-0 Re8 (11...a6 12.a4+–) 12.a4 Ng6 (12...Qf5 13.d4+–) 13.f4 Qd5 (13...Qf5 14.Na3 Nd7 15.g4+–) 14.Nc3 (14.c4 Qd8+–) 14...Qc5 (14...Qd4 15.Rf2 a6 16.Nd1+–) 15.Rf2 Nf4 (15...Nd7+–) 16.Qf3 Ne6 (16...Qe5 17.Qf4 Qf4 18.Rf4 Nd7+–) 17.Qf7 Kh8 18.Qe8 (18.Qe8 Qf8 19.Qf8 Nf8 20.Rf8) 1–0. DEFFM – GuestXVHK, freechess.org, 2020.

6.h3 Bd7 7.ed4+= e4 8.Ne5 Be5 (8...Nf6!?+=) 9.de5+/- c6? (better 9...Qe7+/-) 10.e6!+- f6 (10...Be6 11.Bg7 Discovered attack; 10...fe6 11.Qg4 Double attack (11.Bg7 Discovered attack; 11.Qg4 Decoy)) 11.ed7 Qd7 12.Qh5 g6 (12...Kd8 13.Nc3 Nh6 14.d3+-) 13.Qh4 Qf5 (13...cb5 14.Qe4 Kf7 15.Qf3+-) 14.Nc3 e3 15.fe3 Qc2 16.Ba3 Nd7 (16...Qf5 17.Bc4 g5 18.Qe4 Qe4 19.Ne4+-) 17.bc6 (17.Rc1 g5 18.Qd4 Qg6+-) 17...bc6 18.Qc4 Ne5 (18...Qf5 19.Qc6 Rb8 20.Bb5+-) 19.Qe6 Ne7 (19...Kd8 20.Qd6 Nd7+-) 20.Qe7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.h3 Bf5 7.g4 Bg6 8.ed4 ed4 9.Nd4 Qe7 10.Qe2 Nd7+/-.

6.Be2 de3

7.de3 Nd7 8.0-0 Ngf6 9.Nbd2 e4 (9...0-0 10.Nc4 Qe7 11.h3 Bf3 12.Bf3=) 10.Ng5 (10.Nd4!? Be2 11.Qe2+=) 10...Be2= 11.Qe2 h6 (better 11...Qe7!?=) 12.Nge4+/- Ne4 13.Ne4 Qh4? (better 13...Bh2 14.Kh2 Qh4 15.Kg1 Qe4 16.Bg7 Rg8+/-) 14.Nd6+- cd6 15.Rad1 (15.g3 Qe4 16.Bg7 Rg8 17.Bh6 Rc8+-) 15...0-0 16.Rd6 Nb6 (16...Qb4 17.Rd7 Qb2 18.a4+-) 17.Bd4 Nc8 (17...Rad8 18.Rd8 Rd8 19.Rd1+-) 18.Rd7 Ne7 (18...Qe4 19.Rd1+-) 19.Qd3 Ng6 20.Qg6! fg6 (20...fg6 21.Rg7 Double attack) 21.Rg7 Kh8 22.Rg6 Kh7 (22...Qd4 23.ed4 Rac8 24.Rc1+-) 23.Rg7 Kh8 24.Rg4 Qf6 25.Bf6 (better 25.Rf4!? Kg7 26.Rf6 Rf6+-) 25...Rf6 26.Rd1 Raf8 (26...Rc8 27.c4 Rc7 28.Rd8 Kh7 29.Rgd4+-) 27.f3 R8f7 (27...Rb6 28.a4 a6 29.c4 ab5 30.cb5+-) 28.Kf2 (28.Rd8 Kh7 29.Rgd4 Rc7 30.R8d7 Rf7 31.Rf7 Rf7+-) 28...h5 (28...Rc7 29.Rd8 Kh7 30.c4+-) 29.Rg5 (29.Rd8 Kh7 30.Rgd4 Re7+-) 29...Rh6 (29...Rc7 30.Rh5 Kg7 31.Rd2+-) 30.c4 h4 31.c5 h3 (31...Kh7 32.Rd6 b6 33.Rh6 Kh6 34.f4 bc5 35.Rc5+-) 32.g4 Rhf6 (32...a6 33.Rd6 Rhf6 34.Rf6 Rf6 35.b6+-) 33.Rd8 Kh7 34.Rh5 Kg6 (34...Kg7 35.f4 Rc7+-) 35.Rg8 Rg7 36.Rg5! Kg5 37.Rg7 Kh6 38.Rb7 Rb6 39.cb6 (39.cb6 ab6 40.Rb6 Kg7 41.Ra6 Kf7 42.b6 Ke6 43.b7 Kd5 44.b8Q Kc5 45.Ke2 Kc4 46.Rc6 Kd5 47.Qb5) 1-0. DEFFM – GuestDSJR, freechess.org, 2019.

7.de3 Bf3 8.Bf3 c6 9.Nd2 Qb6?? (better 9...a6 10.Nc4 Bb4 11.Ke2 Qd1 12.Rhd1 ab5+-) 10.Nc4 Qc5 (10...Bb4 11.c3 Qb5+-) 11.Nd6 Ke7 12.Nb7 Qb4 13.c3 Qb2 14.Qd6 (14.Qd6 Ke8 15.Qd8) 1-0. DEFFM – Artemios, freechess.org, 2019.

7.Ne5 ef2 8.Kf1 Be2 9.Qe2 Be5 (9...Ne7!?=) 10.Qe5+/– Ne7 11.Kf2 f6 12.Qe4 c6 13.Re1 Qd7?? (better is 13...cb5 14.Qb7 Nd7+/–) 14.Ba3+– 0-0 15.Qe7 (worse is 15.Be7 Re8 16.a4 cb5 17.ab5 Qb5+–) 15...Qf5 16.Kg1 Nd7 17.d3 (17.bc6 bc6 18.Nc3 Rf7+–) 17...Ne5 (17...cb5 18.Nc3+–) 18.Nd2 (18.bc6 bc6 19.Rf1 Qg4+–) 18...Rf7 19.Qb4 cb5 20.Qb3 h5 (20...Rc8 21.Ne4 Qg6 22.Kh1+–) 21.Rf1 Qg5 (21...Qd7 22.Bb2 Re8 23.Rae1+–) 22.Ne4 Qe3 23.Kh1 Kh7 24.Rae1 Qb6 25.Bb2 (25.Bd6 Rd7 26.Be5 fe5 27.Ng5 Kh6 28.Re5 g6+–) 25...Re7 (25...Rff8 26.Be5 fe5 27.Ng5 Kg6 28.Nf7+–) 26.d4 Nc4 (26...Ng4 27.h3 Rae8+–) 27.Bc3 (better is 27.Ng5! fg5 28.Re7+–) 27...Rae8 28.Ng3 Ne3 (28...Re1 29.Be1 Re3 30.c3+–) 29.Rf3 g6 (29...Nf5 30.Re7 Ng3 31.Rg3 Re7+–) 30.Bb4 Re6 (30...Rd7 31.Bc5 Qe6 32.Ree3 Qb3 A) 33.Re8?! Qa2 34.Re1 A1) 34...Qc2 35.Ne4 (35.Ba7?! f5=; 35.Rf6 b6 36.Re7 Re7 37.Be7 h4 38.Rf7 Kg8 39.Rf8 Kg7–+) 35...Kg7 36.Nf6+– (36.Rf6?! a5+/–; 36.Ba7? Re7–+); A2) 34...Qa5=; B) 33.cb3 Re3 34.Re3+–) 31.Rfe3 (31.Rfe3 Re3 32.Re3 Re3 33.Qe3+–) 1–0. Satka,Martin – Heinze,Johannes, Brandenburg–ch Seniors, 2003.

7.fe3 f6 8.0-0 Qd7 (better 8...Ne7+/-) 9.Ne5?? (better 9.Nc3 Ne7 10.d4+-) 9...Be2= 10.Qe2 Be5?? (better 10...fe5 11.Be5 Nf6 12.Bf6 gf6=) 11.Be5+- fe5?? (11...Ne7 12.Bf4 c6+-) 12.Qh5 Kd8 13.Rf8 (13.Qe5 Nf6-/+) 13...Qe8 (13...Ke7 14.Rf7 Kd8 15.Rd7 Nd7+-) 14.Qe8 1-0. DEFFM – GuestLPYX, freechess.org, 2019.

6.Be2 Nf6

7.ed4 e4 8.Ne5 Be2 9.Qe2 (9.Ke2?! 0-0=) 9...0-0 10.0-0 (10.Nc3 Qe7+/-) 10...Re8 11.a4 (11.Qc4 Re7 12.Nc3 Nbd7+/-) 11...Nbd7 (11...c5 12.Qc4 Qe7 13.f4 ef3 14.Nf3+=) 12.Nc4 Bf4 (12...Nb6 13.Ne3+=) 13.g3+/- Bh6 14.f4 (14.Ne5+/-) 14...Nd5 (14...ef3!? 15.Qf3 Nb6+/-) 15.Ne5 (better 15.Nc3 Nb4 16.Ne3+-) 15...e3? (better 15...f5!?+-) 16.de3 Nb4 (16...f6 17.Nd7 Qd7 18.e4+-) 17.Nf7! Qf6 (17...Kf7 18.Qc4 Double attack (18.Qc4 Decoy)) 18.Nh6 Qh6 19.Qc4 Kh8 (19...Qe6 20.Qb4 Qe3 21.Rf2+-) 20.Qb4 Nf6 (20...Re3 21.Rf2 Qd6 22.Qd6 cd6 23.Nc3+-) 21.Re1 (21.Qd2 Rad8+-) 21...Ng4 (21...a6 22.Qd2+-) 22.Qd2 Re4 (22...a6 23.Nc3+-) 23.Nc3 Re7 (23...Ree8 24.e4+-) 24.e4 Rae8 (24...Rd8 25.d5+-) 25.e5 Rd8 (25...a5 26.Ne4+-) 26.Ne4 Red7 (26...Kg8 27.Ng5 Qg6 28.h3+-) 27.Ng5 Rd4 28.Nf7 (28.Nf7 Kg8 29.Nh6 Nh6 30.Bd4+-) 1-0. DEFFM – guesthvuu, freechess.org, 2019.

7.ed4 ed4

8.Nd4 Bc8!?+-.

8.Nd4 Be2 9.Ke2 Be5 10.Kd3 0-0-/+.

8.Nd4 Be2 9.Qe2 Kd7 10.0-0+-.

8.Nd4 Be2 9.Qe2 Qe7 10.Qe7 Be7 11.Nf5 (11.0-0 0-0+-) 11...Nbd7 (11...g6 12.Ne7 Ke7 13.0-0+/-) 12.Ng7+- Kd8 (12...Kf8 13.Nf5+-) 13.0-0 Rg8 14.Nf5 Ng4 (14...Bf8 15.Nc3+-) 15.f3 Nge5 16.Ne7 Ke7 17.Re1 f6?? (17...Kd6 18.Kf2 Nc4+-) 18.d4 Raf8 (18...Rad8 19.f4+-) 19.de5 Ne5 (19...Re8 20.e6 Ne5 21.Ba3 Kd8 22.e7 Kc8 23.Kf2+-) 20.f4 Rg4 (20...Rd8 21.fe5 f5 22.e6+-) 21.fe5 Rfg8 22.ef6 Kf7 23.Re7 Kf8 24.g3 (better 24.Na3 Rg2 25.Kh1+-) 24...Rc4 25.Na3 Rb4 (25...Re4 26.Re4 Rg5 27.Rd1 Rg3 28.hg3 Kf7 29.Re7 Kg6 30.Rd5 c6 31.Rg7 Kh6 32.Bc1) 26.Rd1 Rb2 (26...Rd4 27.Rd4 Rg3 28.hg3 h6 29.Rd8) 27.Rd8 1-0. DEFFM – GuestKPXC, freechess.org, 2019.

8.Nd4 Be2 9.Qe2 Qe7 10.Qe7 Be7+– 11.Nf5 1–0. DEFFM – GuestMMCJ, freechess.org, 2020.

8.Nd4 Be2 9.Ne2 0-0+=.

7.ed4 Bf3

8.Bf3 e4 9.Be2 0-0 10.0-0 c5 11.dc5 Bc5 12.d4 ed3 13.Qd3 Nbd7 14.Qg3 (14.Nd2 Qc7+/-) 14...Qb6 (14...Re8 15.Bf3 Re6 16.Bb7+/-) 15.Rd1 g6 (15...Rae8 16.Bf1 g6 17.Nd2+/-) 16.Nc3+- Rae8 17.Na4 Bf2?? (better 17...Qa5 18.Nc5 Nc5+-) 18.Qf2 Qf2 19.Kf2 Ne4 (19...Re6 20.Rd4+-) 20.Kg1 Nec5 21.Nc5 Nc5 22.Bc4 Re4 (22...Rc8 23.Bd5+-) 23.Rd4 Rfe8 24.Rf1 R4e7 25.Ba3 b6 26.Rdf4 Ne6 (26...Rf8 27.g4+-) 27.Be6 Re6 28.Rf7 Re1 (28...Re2 29.Rc7 R2e4 30.Ra7+-) 29.Ra7 Rf1 (29...R8e4 30.Re1 Re1 31.Kf2+-) 30.Kf1 1-0. GuestGZQG – HeadlessHessian, freechess.org, 2019.

8.Bf3 e4 9.Be2 0-0 10.0-0 c6 11.a4 Qc7 12.g3 Nd5 (12...Nbd7!?+/-) 13.c4+- Nf4? (better 13...Nf6+-) 14.gf4 Bf4 15.h3 (15.Kh1 Nd7+-) 15...Nd7 (15...Qd6 16.Qc2 Qg6 17.Kh1+-) 16.Kh1 (16.Nc3 Qd6 17.d5 f5 18.dc6 Qg6 19.Kh1 Qh6+-) 16...Nf6 17.Rg1 Rae8 (17...a6 18.bc6 bc6 19.Bc3+-) 18.Rg2 a6 (18...Qd7 19.Ra3+-) 19.Qb3 (19.Kg1 Qd6+-) 19...a5 (19...Qd7 20.Kg1 Kh8 21.d5 cd5 22.cd5+-) 20.d5 c5 (20...Qe7 21.dc6 bc6+-) 21.Bf6 Be5 (21...g6+-) 22.Rg7 Kh8 23.Rf7 Bf6 24.Rc7 Rg8 25.Nc3 Bd4 26.Rb7 Bf2 27.Rf1 Bd4 28.Bh5 Ref8 29.Rf8 Rf8 30.Ne4 Rf1 31.Kh2 Bg1 (31...Be5 32.Kg2 Rf5 33.Bg4 Rf1 34.Kf1 h5 35.Qe3 Bg7 36.Nf6 hg4 37.hg4 Bf6 38.Qe8) 32.Kg2 Rf2 (32...Rf8 33.Kg1 Rg8 34.Kh2 Rf8 35.Qc3 Rf6 36.Nf6 h6 37.Rh7) 33.Nf2 Bf2 (33...Bh2 34.Qc3 Be5 35.Qe5 Kg8 36.Qg7) 34.Kf2 h6 (34...Kg8 35.Qc3 Kf8 36.Qg7) 35.Qc3 Kg8 36.Qg7 1-0. GuestSBVJ – GuestQGDC, freechess.org, 2020.

8.Bf3 e4 9.Be2 0-0 10.0-0 c6 11.a4 Nd5 12.c4 White gets the initiative 12...Nf4 13.g3 Ne2 14.Qe2 Nd7 (14...Re8 15.f3 ef3 16.Qf3+–) 15.Qe4 Re8 16.Qf3 c5 (better 16...Rc8!?+–) 17.Qb7+– Nb6 18.d3 Re7 (18...cd4 19.a5 Nd7 20.Qd5+–) 19.Qf3 Re6 (19...cd4 20.Bd4 Nd7 21.Nc3+–) 20.dc5 Bc5 21.a5 Nd7 22.d4 Be7 23.c5 Rf6 24.Qd5 Rb8 25.c6 (better 25.Nc3 Rg6+–) 25...Nf8 (25...Rd6 26.Qc4 Rc8 27.Ba3+–) 26.Qd8 Bd8 27.Nc3 Bc7 28.Nd5 Rg6 (28...Rb5 29.Nc7 Rb2+–) 29.Nc7 a6 (29...Ne6 30.Ne6 Re6 31.d5+–) 30.d5 ab5 31.a6 Rg4 32.a7 Rc8 33.a8Q Ra8 34.Ra8 g6 35.Re1 h5 (35...Re4 36.Re4 f5 37.Re7 b4 38.Rg7 Kh8 39.Rf8) 36.Rf8! Kf8 Decoy to f8 37.Re8 A beautiful mate combination 1–0. GuestKXKG – GuestGHBT, freechess.org, 2020.

8.Bf3 e4 9.Be2 0-0 10.a4 b6 (10...c5!? 11.dc5 Bc5+/-) 11.0-0 c6 (11...c5!?+/-) 12.d3+- cb5 (12...Qc7 13.g3+-) 13.ab5 Qd7? (13...Qc7 14.de4 Bh2 15.Kh1 Qf4+-) 14.de4 Ne4 15.Qd3 Ng5 (15...f5 16.Nc3 Nc3 17.Qc3 a5 18.ba6 Kh8+-) 16.h4 Ne6 17.Bf3 Nf4 (17...Nc7 18.Ba8 Na8 19.Nc3+-) 18.Qb3 Nc6 (18...Qe7 19.Ba8 Ne2 20.Kh1+-) 19.bc6 Qc7 (19...Qe6 20.Nc3 Qb3 21.cb3+-) 20.Nc3 Ng6 (20...a6 21.g3 Ne6 22.Nd5+-) 21.Nb5 Qe7 (21...Bh2 22.Kh1 Qf4 23.g3 Bg3 24.fg3 Qg3 25.Bg2 Qh4 26.Qh3 Qh3 27.Bh3+-) 22.Nd6 (22.Rfe1 Qf6 23.g3 a5+-) 22...Qd6 23.Ba3 Qf6 (23...Qd4 24.c7 Rac8 25.h5 Rc7 26.hg6 hg6 27.Bf8+-) 24.Bf8 Rf8 25.Ra7 Nh4 (25...b5 26.Re1 Nh4 27.Bd5+-) 26.c7 Nf3 27.Qf3 Qd4 28.Ra8 (28.Ra8 g5 29.Rf8 Kf8 30.c8Q Kg7 31.Qcf5 Qf4 32.Qc3 Qe5 33.Qce5 f6 34.Qff6 Kg8 35.Qeg5) 1-0. GuestSCVM – GuestLMNW, freechess.org, 2019.

6.h3 Bf3

7.Qf3 c6 8.ed4 ed4 9.Bd4 Qe7 10.Be2+- f6 (better 10...Nf6 11.Nc3 0-0+-) 11.0-0 Nd7 (11...a6 12.ba6 Na6 13.Re1+-) 12.bc6 Ne5 13.Qh5 g6 14.cb7 Qb7 (14...gh5?? 15.ba8Q (worse 15.ba8N Nh6-/+; 15.ba8B?! f5+-) 15...Kf7 16.Nc3+-) 15.Qh4 Ne7 (15...g5 16.Qh5 Qf7+-) 16.Qf6 Rf8 1-0. GuestJVKF – GuestGMMJ, freechess.org, 2020.

7.Qf3 c6 8.ed4 ed4 9.Bd4 Ne7 10.Bg7+- Rg8 11.Bb2 Qb6 (11...Ng6 12.Nc3 Qe7 13.Ne4+-) 12.Bc4 Rf8 13.Bg7 Ng6 (13...cb5 14.Bf8 bc4 15.Be7 Be7+-) 14.Bf8 Nf8 15.Qf7 Kd8 16.0-0 Nbd7 (16...cb5 17.Re1 Qc6 18.Bd5+-) 17.Re1 Kc7 18.Nc3 Rd8 (18...Qd4 19.bc6 bc6 20.Ne4+-) 19.bc6 bc6 20.Rab1 Qc5 (20...Qa5+-) 21.Ba6 Qb6 22.Rb6 Kb6 (22...ab6 23.d4 Bb4+-) 23.Rb1 Ka6 (23...Bb4 24.Rb4 Kc7 25.Rb7 Kd6 26.Ne4 Ke5 27.f4 Ke4 28.Rb4) 24.Qc4 Ka5 25.Qa4 1-0. DEFFM – GuestHXWH, freechess.org, 2021.

7.Qf3 c6 8.ed4 Nd7 9.bc6 bc6 10.Bc4 (10.Qc6 Qb8 11.Bb5 Ngf6 12.de5 Be5+-) 10...Qf6 (10...Qe7 11.0-0 e4 12.Qe2+-) 11.Qc6 Rd8 12.0-0 Ne7 13.de5 Be5 14.Qf6 Bf6 15.Bf6 Nf6 16.Re1 Rc8 (16...Kf8 17.Nc3+-) 17.Bb5 (17.Na3 Rc7+-) 17...Kf8 18.Na3 Rc5 (18...g6 19.Rab1+-) 19.Rab1 g6 20.Bd3 (20.Bc4 Nc8+-) 20...Ned5 (20...Rc7 21.g4+-) 21.Rb7 Kg7 (21...a6 22.c4 (22.Ba6?! Ra5 23.Bc4 Ra3+-) 22...Nc7 23.Bf1+-) 22.Ra7 Rd8 (22...Rf8 23.Bc4+-) 23.Nc4 Nb4 (23...Rdc8 24.Ne5 R5c7 25.Rc7 Rc7 26.Bc4+-) 24.Ree7 Rf8 (24...Kg8 25.Ne5 Re5 26.Re5+-) 25.Nd6 Nd3 (25...Nfd5 26.Rf7 Rf7 27.Rf7 Kg8 28.Rd7 Nd3 29.cd3+-) 26.cd3 Rd5 (26...Nd5 27.Rf7 Rf7 28.Rf7 Kg8+-) 27.Rf7 Rf7 (27...Kh6 28.Rf8 Rd6 29.Raf7+-) 28.Rf7 Kh6 (28...Kg8 29.Rf6 Ra5 30.Kf1+-) 29.Rf6 Rd3 (29...Ra5 30.f4 Kg7 31.Rf7 Kg8 32.Rb7+-) 30.Ne4 (30.Nc4 Rd7 31.a4 Kg5+-) 30...Kg7 (30...Rd4 31.Re6+-) 31.Ra6 Rd4 (31...Rd7 32.a4 Kf7 33.f3+-) 32.f3 h5 (32...Rd7 33.Kf2+-) 33.a4 Kh6 (33...Kf8 34.a5 Ra4 35.Ra8 Ke7 36.a6 Ra1 37.Kf2+-) 34.a5 (34.Ra8 Kg7+-) 34...Ra4 (34...Rd8 35.Rd6 Rc8 36.a6+-) 35.Ra8 Ra1 36.Kf2 h4 37.a6 Kh5 38.a7 (38.Rh8) 38...g5 39.Rh8 Kg6 40.a8Q (40.a8Q Ra8 41.Ra8+-) 1-0. DEFFM – GuestNSFS, freechess.org, 2020.

7.Qf3 c6 8.ed4 Qf6 9.de5+- Be5? (9...Qf3 10.gf3 Bf8+-) 10.Qe3 Nd7 11.d4 0-0-0 (11...Qf5 12.Bd3 Qf4 13.de5 Qe3 14.fe3+-) 12.de5 Qg6 (12...Qe6 13.Qa7 Ne7 14.Qe3+-) 13.Bd3 Qg2 (13...Qe6 14.Qa7 Ne7+-) 14.Be4 Qh1 15.Bh1 Nh6 (15...Ne7 16.Qa7 Rhe8 17.Na3+-) 16.bc6 Ne5 17.cb7 Kb8 (17...Kd7 18.Qd4 Kc7 19.Qc5 Kd7 20.Qd5 Ke7 21.Qe5 Kf8 22.Ba3 Kg8 23.b8Q f5 24.Qe8 Re8 25.Qe8) 18.Be5 (18.Be5 Rd6 19.Bd6) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Qf3 Nd7 8.Bc4 (8.ed4 Ngf6+/-) 8...Ngf6 9.ed4 (9.Qb7 0-0+/-) 9...e4 (9...0-0 10.0-0+/-) 10.Qe3 (10.Qe2 Nb6+/-) 10...0-0 11.Nc3 c5 12.bc6 (12.Ne4? Ne4 13.0-0 Re8 14.dc5 Bc5-+) 12...bc6 13.0-0 (13.Ne4? Ne4 14.0-0 Re8-+) 13...Nb6 14.Bb3 Qd7? (better 14...Re8!?+/-) 15.Ne4+- Rae8? (better 15...Ne4 16.Qe4 Rfe8+-) 16.Nf6 gf6 17.Qf3 Kh8 (17...Nd5+-) 18.Qf6 Kg8 19.Qg5 Kh8 20.d5 f6 (20...Be5 21.Be5 Re5 22.Qe5 f6 23.dc6 fe5 24.cd7 Nd7 25.Rae1+-) 21.Bf6 Rf6 22.Qf6 Kg8 23.dc6 (23.dc6 Qe6 24.Be6 Re6 25.Qe6 Kg7 26.Qd6 a5 27.Qc7 Kf6 28.Qb6 Kg5 29.c7 a4 30.Rfe1 a3 31.Re5 Kf4 32.Qd4) 1-0. GuestXFHR – GuestJXJH, freechess.org, 2020.

7.Qf3 de3 8.de3 c6 9.Nd2 Nf6 10.0-0-0 0-0?? (better 10...Qe7 11.Nc4 Bc7+–) 11.Nc4+– e4 (11...Nd5 12.bc6 (12.Ne5?! Be5 13.Be5 Nd7+–; 12.Be5?! Be5 13.bc6 bc6 14.Ne5 Qa5=) 12...bc6 13.e4+– (13.Ne5?! Be5 14.Be5 Nd7+–; 13.Be5 Be5 14.Ne5 Qa5=)) 12.Bf6 Qf6 (12...ef3 13.Bd8 Bb4 14.a4+–) 13.Qf6 gf6 (13...Ba3 14.Na3 gf6 15.g4+–) 14.Nd6 cb5 15.Bb5 a6 16.Be2 Nc6 17.Ne4 Kg7 (17...Rfd8 18.Nf6 Kg7 19.Nd5+–) 18.Nd6 b5 (18...Rfb8 19.c4+–) 19.Bf3 Ra7 (19...Ne5 20.Ba8 Ra8 21.Rd4+–) 20.Bc6 Rc7 (20...b4 21.Rd4 a5 22.Rhd1+–) 21.Ne8 Re8 22.Be8 Kf8 23.Rd7 (23.Rd7 Rd7 24.Bd7+–) 1–0. GuestGRDT – GuestGLYR, freechess.org, 2020.

7.Qf3 de3 8.de3 Nd7 9.Qb7+/- Ngf6 10.Nc3 0-0 11.Bc4 Nc5 Black prepares the advance e4 12.Qc6 Re8 Black intends e4 13.Rd1 e4 14.0-0 h6 (14...Qe7 15.Rd2+/-) 15.Nd5 Nd5 16.Qd5 Rf8 17.Bd4 Qe7 18.Qh5 (18.Qf5 Rad8+-) 18...Ne6 (18...Kh7 19.Rd2+-) 19.Bb2 (19.Bd5 Rad8+-) 19...Ng5 20.h4 Ne6 21.Qg4 f6?? (21...Rab8+-) 22.Be6 (22.Be6 Kh7 23.Bf5 Kg8 24.Qg6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Qf3 de3 8.fe3 c6 9.Bd3 (9.Qg3 Qf6+=) 9...Nf6 (9...Qh4 10.g3 Qf6 11.Qg4+=) 10.0-0 e4? (better 10...0-0+=) 11.Be4+- (11.Bf6?! ef3 12.Bd8 Kd8 13.Rf3 Ke7+/-) 1-0. GuestHSWY – gueshhhttrrekk, freechess.org, 2018.

7.Qf3 Nf6? 8.Qb7+- Nbd7 9.ed4 0-0 10.Be2+/-.

7.Qf3 Nf6? 8.Qb7+- Nbd7 9.ed4 ed4 10.Bd3 0-0 (10...Rb8 11.Qf3 (worse 11.Qa7 Nc5 12.Bd4 Ra8 13.Bc5 Ra7 14.Ba7 Qa8=+) 11...Ne5 12.Qe2+=) 11.Bd4 (11.0-0 Rb8 12.Qa7 Nc5=+) 11...Bc5 12.Be3 Re8 (12...Rb8!? 13.Qa6 Be3 14.fe3 Nc5+=) 13.0-0+/- Be3 14.de3 Nc5 15.Qc6 Nd3 16.cd3 Qd3 17.Nc3 Rab8 (17...Qd6 18.Qd6 cd6 19.Ne2+-) 18.Rfd1 (18.Qc7?! Rbc8 19.Qa7 Qc3=+) 18...Qg6 (18...Qf5 19.Rac1+-) 19.Rac1 Re6? (19...Rec8+-) 20.Qc7 Rbe8 21.Rd8 Rd8 22.Qd8 Re8 23.Qc7 h5 (23...Qd3 24.Qa7 Qd2 25.Qa3+-) 24.Qa7 Qd3 25.b6 Qd2 26.Qa3 Qd3 (26...Qd7 27.Qb2+-) 27.b7 Kh7 (27...Qd7 28.Qa8 Kh7 29.b8Q Rb8 30.Qb8+-) 28.Qb4 (28.Qb3 Rb8 29.Qb1 Qb1 30.Rb1 Nd7+-) 28...Rb8 (28...Qd2 29.Qb1 Kh6 30.Nd5 Nd5 31.Rc2+-) 29.Qb1 Qb1 30.Rb1 (30.Nb1?! Rb7 31.Nc3 Rc7+-) 30...Nd7 31.a4 Nc5 (31...Re8 32.Kh2+-) 32.a5 Rb7 (32...f5+-) 33.Rb7 Nb7 34.a6 Nd8 35.a7 (35.a7 f5 36.a8Q+-) 1-0. DEFFM – GuestTHJV, freechess.org, 2021.

7.Qf3 Nf6? 8.Qb7+- Nbd7 9.ed4 ed4 10.Bd4+- 0-0 11.Nc3 Re8 12.Be2 Rb8 (12...Be5 13.Be5 Ne5 14.Rd1+/-) 13.Qa7+- Ne4 14.Ne4 Re4 15.Be3 Re3?? (better 15...Nb6+-) 16.Qe3 (16.de3?! Bb4 17.Kf1 Bc5+-; 16.fe3?! Bg3 17.Kd1 Be5+-) 16...Bc5 (16...Qf6 17.d4+-) 17.d4 Bb6 18.0-0 Qf6 19.c3 Qd6 20.Bc4 Nf6 21.a4 Re8 22.Qf3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Qf3 Nf6? 8.ed4?! e4 9.Qe3 0-0+=.

6.h3 Bh5

7.ed4 ed4 8.Bd4 Qe7 (8...Kf8 9.Be2+/–) 9.Qe2 Qe2 10.Be2 f6 (10...Ne7 11.Nh4 Be2 12.Ke2+/–) 11.Ng5 Be2 12.Ke2 Nd7 13.Ne4 Be5 14.Be5 Ne5 15.f4 Ng6 16.f5 Ne5 (16...N6e7 17.g4+–) 17.Nc5 0-0-0 18.Ne6 Rd7 19.d4 (19.g4 h5 20.d4 Nf7+–) 19...Nc4 20.Nc3 Nh6 (20...g6 21.Ne4+–) 21.Kd3 (21.Raf1 Nf7+–) 21...Nb6 (21...Nb2 22.Ke4+–) 22.g4 Re8 23.a4 g6 24.a5 Na8 25.Nc5 Rde7 26.Nd5 Rf7 27.Rhe1 Re1 28.Re1 Rf8 29.Ne7 Kb8 30.Nd7 1–0. Trkn – Juppy206, ICC, 2004.

7.Be2 de3!? 8.de3 Nd7=.

7.Be2 Nf6 8.ed4+= e4 (8...Bf3 9.Bf3 e4 10.Be2+=) 9.Ng5 (9.Ne5 Be2 10.Qe2 0-0+/–) 9...Be2 (9...Bg6!? 10.d3 ed3 11.Bd3 Qe7 12.Kf1 a6+=) 10.Qe2+/– (10.Ke2? h6–+) 10...0-0 11.0-0 (11.Ne4? Ne4 12.0-0 Re8–+) 11...Nbd7 12.Ne4 Ne4 13.Qe4 b6 14.Na3 Nf6 15.Qf3 h6 (15...a6!?+/–) 16.Nc4+– Nh7 17.d3 Qh4 18.Ne5 (18.Nd6 cd6 19.c4 a6+–) 18...Ng5 19.Qg4 Qg4 20.Ng4 f5 21.Ne5 Rae8 (21...a6 22.a4+–) 22.f4 Ne6 23.Rae1 g5 24.a4?? (better is 24.fg5 Ng5 25.d5+–) 24...Nf4+/– 25.g3 (25.Bc3!?+/–) 25...Nh3+= 26.Kg2 g4 27.Ng6 Re1 28.Re1 Rf7 29.d5 (29.Ne5 Rf8+=) 29...Kh7 0–1. GuestMPBT – trus, freechess.org, 2017.

7.g4 Bg6

8.Bc4 c5= 9.ed4 (9.Qe2 Ne7=) 9...cd4 10.0-0 Nf6 (10...Nd7 11.Re1 Qc7 12.d3=) 11.Qe2 Be4?? (better 11...Qe7=) 12.g5+- Bf3 (12...Rg8 13.d3 Bf3 14.Qf3+-) 13.Qf3 e4 (13...Qc7 14.d3 Ng8 15.Nd2+-) 14.Qe2 0-0 (14...Nfd7 15.Qe4 Qe7 16.Qb7+-) 15.gf6 Qf6 16.Qe4 Nd7 17.Bd4 (17.Bd3 Qg5 18.Qg2 Qf6+-) 17...Be5? (17...Rae8 18.Bf6 Re4+-) 18.Be5 (18.Bc3 Rae8 19.Bd3 g6 20.Qb7 Nc5+-) 18...Ne5 19.Bd5 Rae8 20.Nc3 (20.Bb7?! Ng6 21.Qa4 Qa1=) 20...Qg5 21.Qg2 Qd2 22.Ne4 Qh6 (22...Qd5?? 23.Nf6 Kh8 24.Nd5+-) 23.Ng5 Rd8 (23...Qb6 24.Qe4 Qg6 25.Qg6 Ng6 26.f4+- (worse 26.Bb7 Re5 27.Nf3 Rb5+-)) 24.Be4 (24.Bb7 Rb8 25.Kh2 Ng6+-) 24...g6 (24...Rfe8 25.Rae1+-) 25.Bb7 Rd4 (25...Rd2 26.Qg3 Qg7 27.Rfe1+-) 26.Rfe1 Nc4 (26...Re8 27.Qg3 Qh4 28.Qh4 Rh4 29.Kg2+-) 27.Bd5 Nd6 28.Rad1 Rd1 29.Rd1 Qh5 (29...Qg7+-) 30.Bc6 (better 30.Bf3 Qh4 31.Rd6+-) 30...Qd1-+ 31.Kh2 Nf5 (better 31...Qc2!? 32.Qf3-+) 32.c4 Qd6 (32...Ne7 33.Qe4 Qd6 34.Kg1 Nc6 35.bc6-+) 33.Kg1 Qd1 (33...Qa3 34.Ne4-+) 34.Qf1 (34.Kh2 Ne7 35.Qf3-+) 34...Qf1 (34...Rd8 35.Bd5 Rd5 36.cd5 Qd5 37.Qe2-/+) 35.Kf1 h6 36.Nf3 Ne7 37.Ke2 (better 37.Be4!?-/+) 37...Nc6-+ 38.bc6 Rc8 39.Nd4 Kf8 40.Ke3 (40.Kd3 Ke7-+) 40...Ke7 41.c5 f5 (41...Kd8 42.Ke4-+) 42.h4 (42.f4 Re8 43.Kd3 Kd8-+) 42...Kf6 (42...Re8 43.Kd3 Kd8 44.f3-+) 43.f4 (43.Kd3 Ke5 44.Kc4 a6 45.Nf3 Kf6-/+) 43...g5-+ 44.fg5 hg5 45.hg5 Kg5 46.Kf3 (46.Kd3 Kf4-+) 46...Kf6 47.Kf4 a6 48.Nf5 (48.a3 Rc7-+) 48...Rc6 49.Nd6 (49.Ng3 Ke7 50.Ne4 Ke6-+) 49...Ke6 50.Ne4 Kd5 51.a3 (51.Kf3 Re6 52.Nd2-+) 51...a5 52.Kf5 a4 (better 52...Rh6 53.Nf2-+) 53.Kf4? (53.Nc3 Kc5 54.Ke4 Re6 55.Kd3 Rd6 56.Ke4 Rd4 57.Ke3-+) 53…Kc4 0-1. WG_Anonymous – Anonymous, lichess.org, 2020.

8.ed4 ed4 9.Nd4 Be4? 10.Qe2+- Qe7 11.f3 Bd5 (11...Bg6 12.Nf5 Bf5 13.Bg7+- (13.gf5?! Nf6+/-)) 12.Nc3 (12.c4 Be6 13.Nf5 Bf5 14.Bg7 Be6 15.Bh8 Nd7+-) 12...Qe2 13.Be2 (13.Nce2?! Be5+-; 13.Nde2?! Bf3 14.Rg1 Be2 15.Ne2 f6+/-) 13...Bc5?? (13...Ne7 14.Nd5 Nd5+-) 14.Nd5 (14.Nd5 Kd7 15.Nf5+-) 1-0. GuestWDWK – FontanaAlpha, freechess.org, 2020.

8.ed4 ed4 9.Nd4 Qe7!? 10.Qe2 Nd7+/-.

8.ed4 ed4 9.Nd4 Qf6 10.Bg2+- c6 (10...Nd7!? 11.Bb7 Rb8 12.Bc6+-) 11.0-0 Ne7 12.Re1 0-0 13.Qf3 (13.Na3 Ba3 14.Ba3 Qd4 15.Re7 Qa4+-) 13...Qf3 14.Bf3 Nd5 (14...a6 15.Ba3 Nc8 16.bc6 Nc6 17.Nc6 bc6+-) 15.bc6 bc6 16.Bd5 (16.Nc3!? Nf4 17.h4 Nd7 18.Nc6 Rab8+-) 16...cd5 17.Nc3 (17.Ba3 Ba3 18.Na3 Rc8+-) 17...Bc5 (17...Rc8!?+/-) 18.Nd5 Bd4 (18...Rc8 19.Rac1+-) 19.Ne7 (worse 19.Bd4 Nc6 20.c3 Rfe8+-) 19...Kh8 20.Ng6 fg6 (20...hg6 21.Bd4 Nc6 22.Bc3+-) 21.Bd4 Nc6 22.Bc3 Rf3 (22...Rad8 23.Re6 Rc8 24.Rb1+-) 23.Re6 Rc8 24.Rae1 (24.Rb1 Kg8+-) 24...Rf4 (24...Kg8+-) 25.Rc6! (25.Rc6 Rff8 26.Rc8 Rc8 27.Re7+-) 1-0. GuestFHRY – GuestMQBK, freechess.org, 2020.

8.ed4 ed4 9.Nd4 Nf6 10.Bg2+/- Be4 (10...Qc8 11.Qf3 Nbd7 12.Qb7 Qb7 13.Bb7+-) 11.Be4+- Ne4 12.Nf5 Bc5? (better 12...0-0!? 13.Bg7 Re8+-) 13.Ng7 (13.Qe2 0-0 14.Qe4 Re8+-) 13...Kf8 (13...Kd7 14.Qf3 Nd6 15.Bf6+-) 14.Ne6! fe6 15.Qf3 (15.Bh8?! Kg8 16.Qf3 Qd5+-) 15...Kg8 (15...Ke8 16.Bh8 Bf2 17.Kd1+-) 16.Qe4 (16.Qe4 Qd5 17.Nc3 Qe4 18.Ne4+-; 16.Bh8?! Qd5 17.Bb2 Nd7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.ed4 Nd7 9.de5+– (9.Ne5?! Qe7 10.Qe2 Bc2+=) 9...Ne5? (better 9...Qe7 10.Qe2 Bb4+–) 10.Ne5 Qe7 11.Qe2 Nf6 (11...Bc2 12.Nc4 Qe2 13.Be2+–) 12.Ng6 Qe2 13.Be2 fg6 (13...hg6 14.g5 Nh5 15.Nc3+–) 14.g5 Ne4 15.Bf3 Ng5 16.Bb7 Rb8 17.Bg7 Rg8 18.Bc6 Kf7 (18...Ke7 19.Bh6 Bf4 20.Bg5 Bg5 21.Nc3+–) 19.Bd4 Nf3 (19...Rb5 20.Bb5 Nf3 21.Kd1 Nd4 22.Bc4 Ne6+–) 20.Bf3 Rbe8 (20...Rb5 21.Ba7 Rf5 22.Be2+–) 21.Kd1 Be5 22.Bd5 Re6 (22...Kf8 23.Be5 Re5 24.Bg8 Kg8+–) 23.Be5 Rge8 24.Bc7 R8e7 25.Be6 (25.Re1 Kf6 26.Re6 Re6 27.Be6 Ke6+–) 25…Ke6 1–0. DEFFM – BOGuk, freechess.org, 2020.

8.ed4 e4

9.Ne5 Nd7 10.Ng6 hg6 11.c4 (11.Qe2 Qe7+–) 11...Bb4 (11...Ndf6 12.Qe2+–) 12.Qb3 Bd6 13.Nc3 Ngf6 14.Bg2 Qe7 15.0-0-0 Bf4? (15...0-0-0 16.Rde1 Qf8 17.Ne4 (17.Be4?! Ne4 18.Ne4 Be7+–) 17...Ne4 18.Re4+–) 16.Ba3 (16.Ne4 Ne4 17.Be4 Kd8+–) 16...Bd6 (better 16...Qe6 17.Rhe1 Kd8+–) 17.c5 Bc5 1–0. onur604 (1835) – ar1_arash38, lichess.org, 2020.

9.Ne5 Be5 10.de5+/– Nd7 11.e6!+– Ndf6 (11...fe6 12.Bg7 Discovered attack) 12.Bc4 (12.g5 Nh5 13.ef7 Kf7+–) 12...h6+/– 13.Qe2 (13.f4 fe6 14.h4 Ne7+=) 13...Qd6 (13...fe6 14.Be6 Qe7 15.Bb3+/–) 14.ef7 Bf7 15.Bf7 Kf7 16.Qc4 (16.Nc3+/–) 16...Ke8 (16...Kg6!?+/–) 17.Nc3+– Rd8 (17...Kd7 18.0-0-0 (18.Ne4 Ne4 19.0-0-0 Ngf6–/+) 18...Re8 19.Rhe1+–) 18.0-0-0 c6 (18...Kd7 19.Ne4 Ne4 20.Qe4+–) 19.Rhe1 Kd7 (19...Ne7 20.Ne4 Ne4 21.Re4+–) 20.Ne4 Ne4 (20...Qd5 21.bc6 Qc6 22.Qf7 Kc8 23.Qg7 Ne4 24.Re4+– (24.Qh8?! Nf2 25.Qc3 Qc3 26.Bc3 Nd1 27.Kd1 Kd7+–)) 21.Qe4 Nf6 (21...Ne7+–) 22.Qf5 (22.Qf5 Kc7 23.Be5+–) 1–0. GuestBVRD – GuestXTBF, freechess.org, 2018.

9.Ne5 Be5 10.de5 Ne7 11.e6! 0-0 (11...fe6 12.Bg7 Discovered attack) 12.ef7 Bf7 13.Nc3 Nd5 14.Ne4 Re8 (14...Bg6!? 15.Qe2 a6+/-) 15.d3 Bg6 16.Qd2 Be4 17.de4 Re4 18.Be2 c6 (better 18...Qd6 19.0-0-0 c6+-) 19.c4 Qe8 (19...Re2 20.Ke2 Qe7 21.Kd1+-) 20.cd5 cd5 (20...cb5 21.Rd1+-) 21.Qd5 Kh8 22.0-0-0 Re2 23.Qb7 Nd7 24.Rd7 Rc8 25.Rc7 Rc7 (25...Re1 26.Re1 Qe1 27.Kc2 Qe2 28.Kb3 Qd1 29.Kc4 Qe2 30.Kd5 Rd8 31.Rd7 Qf3 32.Ke6 Qe2 33.Be5 Qa2 34.Qd5 Qd5 35.Rd5 (35.Kd5?! Rd7 36.Kc4 Kg8=) 35...Rd5 36.Kd5+-) 26.Qc7 Qe4 (26...Re7 27.Qc6 Qb8+-) 27.Qg7 1-0. DEFFM – GuestDNXR, freechess.org, 2021.

9.Ne5 Be5 10.de5 Ne7 11.Bg2 a6 12.Nc3 ab5 13.Ne4 Nbc6+-.

9.Ne5 Be5 10.de5 Ne7 11.h4 h6 (11...h5!?+/-) 12.h5+- Bh7 13.Bc4 (better 13.e6 fe6 14.g5+-) 13...0-0? (better 13...Nd5 14.g5 hg5+-) 14.g5! hg5 15.h6 (better 15.e6 f6 16.h6 Qe8 17.hg7 Kg7+-) 15...g6? (15...gh6 16.Rh6 Kg7 17.Bf7 Rf7 18.Qh5+-) 16.Qg4 White plans e6 (16.Nc3 Qd4 17.Qe2 a6 18.ba6 Ra6+-) 16...Nd7 (16...a6 17.e6 (17.Qg5?! Nf5 18.Qd8 Rd8+-) 17...f6 18.a4+- (worse 18.Qe4 ab5 19.Bb5 c6+-)) 17.e6 Nf6 (17...Nb6 18.ef7 Rf7 19.Bf7 Kf7+-) 18.Bf6 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

9.Ne5 Nf6 10.h4 h6 11.Ng6 fg6 12.Qe2+/–.

5.e4 Bg4

6.c3 c5 A) 7.Na3 Nf6 (7...dc3 8.dc3 Bc7 9.Qd8 Kd8 10.Ng5 Ke7 11.Bc4 Nf6 12.Nf7 Rf8) 8.Bd3 0-0 9.h3 Be6 10.0-0 Nbd7 11.Ng5 Nb6 12.Ne6 fe6; B) 7.Bd3 Nf6 (7...Nd7 8.Na3 Ngf6 9.h3 Be6 10.Ng5 Qe7 11.Ne6 Qe6 12.Bc4 Qe7; 7...a6 8.h3 Be6 9.Na3 Nf6 10.Ng5 dc3 11.Bc3 ab5 12.Nb5 Nc6) 8.Na3 Nh5 9.0-0 Nf4 10.Bc4 Qf6 11.Bd5 Nd5 12.ed5 Nd7; C) 7.cd4 cd4 8.h3 Bf3 9.Qf3 Nd7 10.Na3 Ngf6 11.Nc4 Nc5 12.Bd3 0-0; D) 7.Be2 Nf6 8.Nd4 Be2 9.Ne2 Ne4 10.Ng3 Ng3 11.hg3 0-0 12.Qf3 Qb6; E) 7.h3 Be6 8.Na3= (8.cd4 cd4 9.Na3 Nf6 10.Nc4 0-0 11.Nce5 Ne4 12.Bd3 Nc5) 8...Nf6 9.Ng5 0-0 10.Bd3 Nbd7 11.Ne6 fe6 12.Qb3 Qe7.

6.c3 Bc5 A) 7.h3 Bf3 (7...Bh5 8.g4 Bg6 9.cd4 ed4 10.d3 Ne7 11.Nbd2 0-0 12.h4 h5) 8.Qf3 Nf6 9.cd4 Bd4 10.Nc3 Nbd7 11.Bc4 Nc5 12.0-0 0-0; B) 7.Bd3 Nf6 (7...dc3 8.dc3 Nf6 9.h3 Be6 10.0-0 0-0 11.c4 Nbd7 12.Nc3 a6; 7...Qd6 8.0-0 Nf6 9.h3 Bf3 10.Qf3 0-0 11.cd4 Bd4 12.Ba3 Bc5; 7...Nd7 8.0-0 Ngf6 9.h3 Bh5 10.Na3 dc3 11.dc3 0-0 12.Qe2 Qe7; 7...Nh6 8.0-0 0-0 9.h3 Bf3 10.Qf3 Nd7 11.Na3 dc3 12.dc3 Qg5; 7...Ne7 8.h3 Bf3 9.Qf3 Ng6 10.cd4 Bd4 11.Nc3 a6 12.Bc4 0-0) 8.h3 dc3 9.dc3 Be6 10.0-0 0-0 11.c4 a6 12.Ne5 Nbd7; C) 7.cd4 Bd4 (7...Bf3 8.Qf3 Bd4 9.Nc3 Nf6 10.Bc4 Nbd7 11.0-0 0-0 12.Rfe1 Nc5; 7...ed4 8.Qc2 Bf3 9.Qc5 Be4 10.f3 Bg6 11.Na3 Nd7 12.Qd4 Ngf6) 8.Nc3 Nf6 9.Bc4 a6 10.Qb3 0-0 11.Ba3 Bf3 12.gf3 ab5; D) 7.Bc4 Nd7 (7...Nf6 8.Bf7 Kf8 9.Qb3 Qe7 10.Ng5 h6 11.Ne6 Kf7 12.Nc5 Kg6; 7...Qf6 8.0-0 Bf3 9.Qf3 Qf3 10.gf3 Nd7 11.cd4 Bd4 12.Bd4 ed4; 7...Bf3 8.Qf3 Nf6 9.0-0 0-0 10.Na3 a6 11.ba6 Na6 12.Nc2 Qd6) 8.Bd5 Rb8 9.cd4 ed4 10.Qb3 Qf6 11.Na3 Bf3 12.Qf3 Qf3.

6.c3 Nd7 7.cd4 Qf6 (7...Ngf6 8.Be2 Bf3 9.Bf3 0-0 10.0-0 ed4 11.Bd4 Ne5 12.g3 a6; 7...ed4 8.Bd4 Ngf6 9.h3 Bf3 10.Qf3 0-0 11.Nc3 Re8 12.Qe3 Qe7; 7...Qe7 8.de5 Ne5 9.Nc3 Nf6 10.Be2 0-0-0 11.0-0 Nf3 12.Bf3 Bf3) 8.Nc3 Ne7 9.d5 Ng6 10.h3 Bf3 11.Qf3 Qf3 12.gf3 Nb6.

6.c3 Bf3 7.Qf3+= Bc5 (7...c5 8.Qg4+= (8.Na3 Nf6 9.Nc4 Qe7 10.Qg3 dc3 11.Bc3 Nbd7 12.Qd3 Bc7) 8...Nf6 9.Qg7 Rg8 10.Qh6 Nbd7 11.f3 Nb6 12.a4 Bf8; 7...Nf6 8.cd4 Nbd7 9.d5 0-0 10.Nc3 Bb4 11.Bd3 Nc5 12.0-0 a6; 7...Nd7 8.cd4 Ngf6 9.d5 0-0 10.Nc3 Bb4 11.Bd3 Nc5 12.0-0 a6; 7...dc3 8.Nc3 Nf6 9.Bc4 Nbd7 10.0-0 Nb6 11.Bd3 0-0 12.a4 Nbd7; 7...Qf6 8.cd4 ed4 9.Na3 Nd7 10.Nc4 Ne5 11.Qf6 Nf6 12.Bd4 Nc4) 8.Qg3+/– Qf6 (8...Nd7!?+/– 9.Bc4 g6 10.cd4 Bd4 11.Bd4 ed4 12.0-0 Ngf6) 9.cd4+– ed4 10.Qc7 Qb6 (better is 10...Nd7!?+– 11.Bc4 Qb6 12.Qg3 Ngf6) 11.Qc8 Ke7 12.Na3 Ba3 (12...a6 13.Rc1 ab5 14.Rc5 Nd7 15.Qa8 Qc5 16.Nb5 Qc6+–; 12...Bb4+–) 13.Ba3 Kf6 14.Qf5 1–0. Marram – Oemer Alkan, internet, 2010.

6.c3 Nf6 7.cd4 (7.h3 Bf3 8.Qf3 0-0 9.cd4 ed4 10.Bd4 Ne4 11.Bd3 Ng5 12.Qb7 Bb4) 7...ed4 (7...Nbd7 8.Be2 Qe7 9.de5 Ne5 10.Nc3 0-0 11.d4 Nf3 12.gf3 Ba3) 8.Bd4 0-0 9.h3 c5 10.Be3 Bf3 11.gf3 Nbd7 12.Nc3 Re8.

6.Be2 A) 6...a6 A1) 7.ba6 Na6 (7...Bf3 8.ab7 Ra7 9.Bf3 Nd7 10.Qc1 Rb7 11.Na3 Nc5 12.Nc4 Nf6) 8.Ne5 Be5 9.Bg4 Nf6 10.0-0 Qd6 11.Na3 0-0 12.Bf5 Bh2; A2) 7.0-0 ab5 (7...Nf6 8.c3 Bf3 9.Bf3 ab5 10.cd4 Nc6 11.d5 Nd4 12.Bd4 ed4; 7...Bf3 8.Bf3 Nf6 9.Qe2 0-0 10.Na3 Qe7 11.Nc4 ab5 12.Nd6 Qd6) 8.Nd4 Be2 9.Ne2 Nf6 10.Nbc3 b4 11.Nb5 Ne4 12.Nd6 cd6; A3) 7.Nd4 Be2 8.Ne2 ab5 9.Nbc3 b4 10.Nd5 Nf6 11.Ng3 0-0 12.Qf3 Nbd7; A4) 7.c3 dc3 (7...c5 8.cd4 cd4 9.ba6 Qb6 10.Na3 Bf3 11.gf3 Qb2 12.Nc4 Qb4; 7...d3 8.Bd3 Nf6 9.0-0 ab5 10.Bb5 c6 11.Be2 Qb6 12.Qc2 0-0) 8.Nc3 Nf6 9.0-0 0-0 10.h3 Bf3 11.Bf3 ab5 12.Nb5 Nc6; B) 6...Bf3 7.Bf3 Nd7 (7...a6 8.c3 ab5 9.cd4 Nc6 10.d5 Na5 11.d4 Nc4 12.Qb3 c6; 7...Nf6 8.Na3 Nbd7 9.0-0 Nc5 10.Qe2 a6 11.ba6 Ra6 12.Nc4 0-0) 8.c3 Nc5 9.0-0 d3 10.c4 Nf6 11.Nc3 0-0 12.g3 Qd7; C) 6...Nf6 C1) 7.0-0 a6 (7...Bf3 8.Bf3 a6 9.Qe2 0-0 10.Na3 Qe7 11.Nc4 ab5 12.Nd6 Qd6) 8.Nd4 Be2 9.Ne2 ab5 10.Nbc3 b4 11.Nd5 Ne4 12.d3 Ng5; C2) 7.Nd4 Be2 (7...0-0 8.Bg4 ed4 9.Bf3 Re8 10.0-0 a6 11.ba6 Ra6 12.Bd4 Bh2; 7...ed4 8.Bg4 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c5) 8.Ne2 a6 9.Nec3 c6 10.bc6 Nc6 11.Nd5 Nd5 12.ed5 Nb4.

6.h3 Be6 7.c3 c5 8.cd4 cd4 9.Na3 Nf6 10.Nc4 0-0 11.Qc2 Bc4 12.Bc4 Nbd7.

4.Nf3 Bd7

5.e3 Bc5 6.Bc4 (better 6.Ne5 Be6 7.Qf3+–) 6...c6? (better 6...Qe7+=) 7.Ne5+– (7.ed4?! ed4 8.Qe2 Qe7 9.Nd4 Qe2 10.Ne2 Ne7+–) 7...cb5 (better 7...Nh6+–) 8.Bf7 Ke7 9.ed4 Bd6 10.Qe2 (better 10.Bb3 Be5 11.de5+–) 10...Nf6 (10...Kf8 11.Bb3 Na6+–) 11.Bb3 Nc6 (11...Kf8 12.Nf7 Qc7 13.Nh8 Nc6+–) 12.Ng6 1–0. GuestDTRL – GuestSVHB, freechess.org, 2020.

5.e3 de3 6.de3 Bb4 7.c3 (better 7.Bc3!? Bc3 8.Nc3+/-) 7...Bd6+/- 8.Qd5 c6?? (better 8...Qc8 9.Ne5 Be6+=) 9.Qd6+- Nf6 10.Ne5 (better 10.Qe5 Be6+-) 10...Nd5 (10...Be6 11.Qd8 Kd8 12.a4+-) 11.c4 (11.bc6 bc6 12.Nd2 Be6 13.Qd8 Kd8+-) 11...Qa5 (11...Qe7 12.Qe7 (12.cd5 Qd6 13.bc6 bc6-/+) 12...Ne7 13.Nc3+-) 12.Nd2 Qc7 (12...Qb4 13.Ba3 Qd6 14.Bd6 Nf6+-) 13.Ne4 (13.cd5?! Qd6 14.Nec4 Qg6 15.bc6 bc6=+) 13...Qd6 (13...Qa5 14.Ke2 Nf6 15.bc6 bc6 16.Nf6 gf6 17.Nf3+-) 14.Nd6 Ke7 15.Ndf7 Nb4 (15...Rc8 16.cd5 cd5 17.g4+-) 16.Ba3 c5 17.Bb4 cb4 18.Nh8 Nc6 19.bc6 Rh8 20.cd7 Ke6 21.f4 (better 21.Rd1 Ke5 22.d8R Rd8 23.Rd8 b6+-) 21...Rd8 22.c5 a5 23.Rd1 a4 24.Bc4 Ke7 (24...Kf6 25.c6 bc6 26.Nc6 g5 27.Rd6 Kg7 28.Nd8 gf4 29.Ne6 Kg6 30.Ng7 Kg7 31.d8Q fe3 32.Qf6) 25.c6 bc6 (25...g6 26.c7 b6 27.Nc6 Kf6 28.cd8Q Kg7 29.Qe7 Kh6 30.Rd5 b3 31.Qf8) 26.Nc6 Kf6 (26...Kf8 27.Nd8 g5 28.Ne6 Kf7 29.d8Q h6 30.f5 b3 31.Rd7) 27.Rd6 Kf5 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

5.e3 de3 6.de3 e4 7.Ne5 Be6 8.Qd8 Kd8 9.Nd2+/-.

5.e3 de3 6.Be5 ef2 7.Kf2 Be6=.

5.Ne5 Bb5 6.Nd3 Nc6 7.Na3 (7.e3 de3 8.fe3 Bc4=) 7...Ba6 (7...Bd3 8.ed3 Qg5 9.Nc4+=) 8.e3= f6 (8...Qg5 9.Qf3=) 9.Nb5 Bb5 (9...de3!? 10.de3 Qd7=) 10.Qh5+/– g6 11.Qb5 Qd7 (11...de3 12.de3 Rb8 13.Rd1+/–) 12.Be2 (12.Qb7 Rb8 13.Qa6 de3 14.fe3 Nb4 15.Nb4 Bb4+/–) 12...0-0-0 13.Bf3 Nge7?? (better is 13...de3 14.fe3 a6+/–) 14.Nc5+– b6 (14...Re8 15.Qb7 Kd8 16.Nd7 Kd7+–) 15.Qa6 (15.Qa6 Kb8 16.Qb7) 1–0. Janek – Vesely, internet, 2016.

5.Ne5 Bb5 6.Nd3 Nf6 7.e3 de3 8.fe3 Bd3 (8...Bc6 9.Ne5=) 9.Bd3+= Nd5 (9...Bd6 10.0-0 Nbd7 11.Bf5+=) 10.Qf3 Qh4 11.g3 Qh3?? (better is 11...Qb4 12.0-0 Qb2 13.Qf7 Kd8 14.Qd5 Nd7+–) 12.Bf5 Qh6 13.Qd5 c6 14.Qe4 Be7 15.Ba3 Qf6 (15...Qg5 16.Bc8 Nd7 17.Bb7 Rd8 18.Bc6 Kf8+–) 16.0-0 0-0 (16...Kd8 17.Bh3 Qf1 18.Kf1 Ba3 19.Na3+–) 17.Be7 (17.Be7 Qh6 18.Bf8+–) 1–0. b4_player – ksew, casual, 2013.

4.Nf3 Nd7

5.c3 dc3 6.Nc3 Ngf6 7.d4 ed4 8.Nd4=.

5.c3 Bc5 6.cd4 ed4 7.e3 (7.Bd4 Ngf6+/-) 7...de3+= 8.Bg7 (8.fe3!? Ngf6 9.Nc3=) 8...ef2= 9.Ke2 Qe7 10.Kd3 Qd6?? (10...Nb6 11.Bh8 Nf6=) 11.Kc3+/- Ndf6 12.Bh8 Be6 13.a3 (13.Kb2 0-0-0 14.Qa4 Bf5+-) 13...Rd8? (better 13...0-0-0!? 14.Kb2 Ng4+-) 14.Kb2+- c6 (14...Ng4 15.Nc3 N8f6 16.h3+-) 15.Nc3 a6 16.ba6 (16.d4 Bb4+-) 16...ba6 17.Qa4 Rb8 (17...Kf8 18.Ba6 Rb8 19.Kc1+-) 18.Kc1 Bb3 (18...Rb3 19.Ne4 Ne4 20.Qe4 Ba3 21.Kd1+-) 19.Qa5 Kd7 (19...Kf8 20.Ba6 Ra8 21.Ng5+-) 20.Bg7 (20.Ne4! Ne4 21.Be5 Qd5 22.Qc7 Ke6 23.Qb8 Ne7+-) 20...Ne7 (20...Re8+-) 21.Bf6 (21.Bf6 Bb6 22.Qe5 Qe5 23.Be5+-) 1-0. Taulien,Hans_Juergen (2350) - Fischer,Ronald (1830), remoteschach.de, 2002.

5.c3 d3 6.ed3+= Bd6 (6...Ngf6 7.d4 e4 8.Qe2+=) 7.Be2 (7.Ba3 Ngf6+=) 7...Ngf6 8.0-0 0-0 9.Na3 (9.Ba3 Qe7 10.Bd6 Qd6+=) 9...Re8 (9...Nb6 10.d4 ed4 11.Nd4+=) 10.Nc4 b6 (10...Bc5 11.Re1=) 11.Ng5 (11.Nd6 cd6 12.Re1 a6+=) 11...Nd5 (11...a6 12.Bh5 Re7 13.Bf3+=) 12.Nf7 (12.Bf3!? Bb7 13.Nd6 cd6 14.Nf7 Kf7 15.c4+/-) 12...Kf7= 13.Bf3 (13.Bh5 Kg8=) 13...N7f6 14.Bd5 (14.Nd6 cd6 15.c4 Bd7 16.cd5 Bb5+=) 14...Nd5 15.Qf3 Nf6?? (better 15...Ke6 16.Qg4 Kf6 17.Qf3 Ke6=) 16.Qa8+- Qe7 (16...Bf5 17.Qf3 Bg6 18.Rfe1+-) 17.Qa7 Bc5 (17...Bf5 18.d4 Bd3 19.de5 Bc4 20.ed6 Qd6+-) 18.Rae1 Ng4 (18...Be6 19.Ne5 Kg8 20.c4+-) 19.d4 Be6 20.Ne3 Ne3 (20...Bd6 21.Ng4 Bg4 22.de5+-) 21.fe3 (21.dc5?! Nf1 22.Rf1 Qc5+/-) 21...Kg8 22.dc5 Qc5 23.Ba3 Qc4 24.Rf2 Bd5 (24...h6 25.Ref1+-) 25.e4 Ra8 (25...Be6+-) 26.Qa8! Ba8 27.Rf8 1-0. b4_player – quins, gamecolony.com, 2007.

5.e3 c5 6.bc6 bc6 7.ed4 e4 8.Qe2 Ngf6 (better 8...Qe7!? 9.Ne5 Ne5 10.de5 Rb8+=) 9.Nc3+- Rb8 10.Ne4 Ne4 11.Qe4 Be7 12.Ba3 c5 13.Bc5 Nc5 14.dc5 0-0 15.Bd3 g6 16.0-0 Bc5 17.Rab1 Bf5 18.Rb8 Qb8 19.Qd5 Bb6? (better 19...Bd3 20.Qd3 Re8+-) 20.Bf5 gf5 21.Qf5 (21.Qf5 Qc8 22.Qg5 Kh8 23.Rc1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 e4 6.Nd4 Bc5?? 7.Ne6!!+- fe6 8.Bg7 Kf7 9.Bh8 e5 (9...Ngf6 10.Bf6 Nf6+-) 10.Bc4 Kg6 (10...Ke7 11.Qg4 Ndf6 12.Qg7 Kd6 13.Bg8 Be6+-) 11.Qg4 Qg5 12.Bf7! Kh6 (12...Kf7 13.Qg5 Deflection) 13.Qh3 (13.Qh3 Qh4 14.Qh4) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 e4 6.Nd4+/- Ngf6 7.Be2 Bc5 (7...Bd6 8.f3+/-) 8.Nf5 (8.0-0 0-0+/-) 8...0-0 (8...Bf8 9.Bd4+/-) 9.d4 Bb6 (9...ed3 10.Qd3 Bb4 11.c3+/-) 10.0-0 a6 (10...Ba5 11.c4+/-) 11.a4 (11.ba6 ba6 12.Nd2 Rb8+/-) 11...ab5 12.ab5 Ra1 13.Ba1 c6 14.c4 (14.Nd2 Bc7+/-) 14...cb5 15.c5 (15.cb5 Nd5+/-) 15...Bc7 16.Qc2 (16.Qb3 b4+/-) 16...Nb8 (16...b6 17.c6 Nb8 18.Ng3+=) 17.Ng3+/- Qe8 (17...Bg3 18.fg3 b4 19.Nd2+/-) 18.Nc3 Bg3 19.fg3 b4 20.Na2 (20.Rf6 gf6 21.Ne4 Qe7+=) 20...Nd5 (20...Na6 21.Rb1+/-) 21.Qb3 Be6 22.Nb4 Nb4 23.Qb4 Bd5 24.Rf5 (24.Qb6 Qe7+/-) 24...Qd7 25.Rf4 Nc6 26.Qa4 (26.Qb1 Ra8+/-) 26...Qc7 (26...Rb8 27.Qb5+/-) 27.Bc4 Bc4 (27...Qd7 28.g4+/-) 28.Qc4+- Ra8 (28...Qa5 29.Bc3 Qa3 30.Kf2+- (30.Re4?! Qc1 31.Kf2 Qc2 32.Kf3 Na5=)) 29.Bc3 Re8? (29...Qd7+-) 30.d5 Na5 (30...Ne5 31.Re4 (31.Qe4?! Qc5 32.Be5 f6+-) 31...Qb8 32.Be5 Re5 33.d6 Re4 34.Qe4+-) 31.Qd4 (31.Re4 Rf8 32.Qb5 Nc6 33.dc6 bc6+-) 31...f6 32.Re4 Re4 (32...Rf8 33.Qb4 Ra8 34.Qb5+-) 33.Qe4 Qc5 34.Ba5 Qc1 (34...h6 35.Bb4 Qc1 36.Kf2+-) 35.Kf2 Qb2 36.Kf3 h6 (36...Qb5 37.g4 h5+-) 37.Qe6 Kh7 38.Qf5 Kg8 (38...g6 39.Qd7 Kg8 40.Qd8 Kf7 41.Qc7 Kg8 42.d6+-) 39.d6 (39.d6 Qb3 40.d7 Qd1 41.Kf2+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

5.e3 Qf6 6.ed4+= e4 7.Qe2 Nc5 (better 7...Qe7!? 8.Ne5 Ngf6+/-) 8.Nc3 (8.dc5?! Qb2 9.Qe4 Be6+=) 8...Kd8 (8...Be6 9.Ne5+-) 9.Ne5 Bd6 (9...Be6 10.dc5 Qe5 11.d4+-) 10.Nf7! Qf7 11.dc5 Bc5 12.Ne4 Bb6 (12...Be7 13.Qc4 Qc4 14.Bc4+-) 13.Ng5 Qg6 (13...Qf8 14.Qd3 Ke8 15.Qe4 Ne7 16.Nf3+-) 14.Qd3 Bd7 (14...Ke7 15.Qg6 hg6 16.Bg7 Rh4+-) 15.Qg6 hg6 16.Nf7 Ke7 17.Nh8 Nf6 (17...Bf5 18.Bg7 Nf6 19.Bc4+-) 18.Ng6 Kd6 19.Be5 Kc5 20.d4 Kd5 (20...Kb4+-) 21.Nf4 Ke4 22.Bd3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Ngf6 6.ed4 ed4 7.Bd4 Ne4 (7...Bc5!?+=) 8.Bd3+– Ng5 9.Ng5 Qg5 10.Qe2 Be7 11.0-0 0-0 12.Nc3 Re8 (12...Qh4!?+–) 13.Qe4+– Do you see the mate threat? 13...g6 (better 13...Nf8+–) 14.Nd5 Nf6 (14...c6 15.Nc7 Nc5+–) 15.Nf6 Bf6 16.Qe8 Kg7 17.h4! Qh4 A deflection (17...Qg2 18.Kg2 Bh3 19.Kh3 Re8 20.Rae1+–) 18.Bc5 Kh6 19.Bf8 Kh5 20.Qf7 Be5 Threatening mate... how? 21.Qh7 Kg5 (21...Kg4 22.Qg6 Qg5 23.Be2 Kh4 24.Qh7 Qh5 25.Qh5) 22.Qg6 Kf4 23.Bh6 Qg5 (23...Qh6 24.Qg3) 24.Qg5 1–0. GuestKXKG – GuestSXDS, freechess.org, 2020.

5.e3 Ngf6 6.ed4+= e4 7.Ne5 (7.Qe2 Nb6+=) 7...Ne5 (7...Bd6 8.Nc4+=) 8.de5 Nd7 (8...Nd5 9.Nc3 Nc3 10.Bc3+=) 9.Qe2 (better 9.e6 fe6 10.Qh5 g6 11.Qe2+/-) 9...Ne5?? (better 9...Nc5+/-) 10.Be5 (10.Qe4 Bd6 11.d4 f5+-) 10...Bf5 11.g4 (11.Qe3 Qd7+-) 11...Be6 (11...Bg6 12.Bg2 Qe7 13.Bg3+-) 12.Bg2 Bd6 (12...Qd7 13.Qe4 Qb5 14.Nc3+-) 13.Bg7 Rg8 14.Bd4 (better 14.Bc3 Qe7 15.Be4 Bg4+-) 14...Bd5 (14...Rg4 15.Bh3 Rg6 16.Be6 (16.Qe4?! Be7 17.Bg2 Rg2+/-) 16...Re6 17.Rg1+-) 15.Nc3 Qe7 (15...Be7 16.Be4 Be4 17.Qe4 Rg6 18.Qb7 a6 19.ba6 Rb8+-) 16.Nd5 Qe6 17.Be4 (better 17.Nf6 Ke7 18.Ng8 Rg8 19.Be4 Rg4+-) 17...0-0-0 (17...Kd8 18.Nf6 Rg5 19.Bb7+-) 18.Bf5 Qf5 19.gf5 Rge8 20.Ne3 Bf4 21.Ba7 Be3 22.fe3 1-0. DEFFM – GuestDCRV, freechess.org, 2018.

5.g3 c5 6.c3+=.

5.g3 Be7 6.Bg2 (6.c3 dc3 7.Nc3 Ngf6=) 6...Ngf6 7.0-0 0-0 (7...c5 8.bc6 bc6 9.Ba3+=) 8.d3 (8.e3 de3 9.fe3 Bd6=) 8...a6+= 9.a4 ab5 10.ab5 Ra1 11.Ba1 c5 12.bc6 bc6 13.Nbd2 (13.c3 c5=) 13...Ba6 14.Qb1 (14.c3 c5=) 14...Qc7 (14...Qa5 15.e3 c5 16.Qe1+=) 15.Bb2 (15.c3 c5=) 15...Rb8+= 16.Qa2 Bb7 17.Ng5 (17.c3!? c5 18.Rb1+=) 17...Nd5–/+ 18.Ndf3 h6 19.Ne4 f5 20.Ned2 Ra8 21.Qb3?? (better is 21.Qb1–/+) 21...Nc5–+ 22.Qc4 Ra4 (22...Ra4 23.Ne5 Rc4 24.Ndc4 Nc3 25.Bc3 dc3–+) 0–1. Coope,Derek William – Wittig,Frank, corr, 1985.

5.e3 Bc5

6.ed4 ed4

7.Bc4 h6 (7...Nb6!? 8.Bb3 Ne7+=) 8.0-0+/- Ngf6 (8...Ne7!?+/-) 9.Re1 (better 9.Qe2 Kf8 10.Bd4 Bd4 11.Nd4+/-) 9...Be7? (better 9...Kf8+/-) 10.Ba3+- (10.Bd4?! 0-0+-) 10...c5 (10...Ng8 11.c3 Kf8+-) 11.bc6! bc6 12.Be7 (better 12.Re7 Qe7 13.Be7 Ke7 14.Qe1 Kf8 15.Nd4+-) 12...Qa5 (12...Qe7 13.Re7 Ke7 14.Qe1 Kf8 15.Nd4 Nb6+-) 13.Bb4 Ne5 14.Ba5 0-0 15.Ne5 Re8 16.Bf7 Kf8 17.Bb4 Re7 18.Be7 Ke7 19.Nc6 (19.Qf3 Bd7 20.Qa3 Kd8 21.Nd7 d3 22.Nf6 Kc8 23.Re7 gf6 24.Qd6 dc2 25.Be6) 19...Kf7 20.Nd8 Kg6 21.Qf3 Bg4 1-0. GuestTFGS – IrenTreski, freechess.org, 2020.

7.Bd3 Ne7!?=.

7.Bd3 Ngf6 8.Qe2 (worse 8.Bd4 Bd4 9.Nd4 Ne5-/+) 8...Qe7 9.Qe7 (worse 9.Nd4 Ne5=) 9...Be7 10.Bd4 0-0 (10...Nc5 11.Bc5 Bc5 12.Nc3+=) 11.0-0+/- Bd6 12.Nc3 Nb6 (12...Nc5!?+/-) 13.Rfe1+- Bg4 14.Ng5 h6 (14...Rfe8+-) 15.Bf6 gf6 (15...hg5 16.Bg5 Nd7 17.Ne4+-) 16.Nh7 Rfd8 (16...Kg7 17.Nf8 Rf8+-) 17.Nf6 (17.Nf6 Kg7 18.Ng4+-) 1-0. GuestKRWG – GuestXJPT, freechess.org, 2019.

7.Bd4 Bd4 8.Nd4 Ngf6 (better is 8...Ne7+=) 9.Bc4?? (9.Qe2!? Kf8 10.Nc3+/–) 9...0-0?? (9...Ne5 10.c3 Nc4 11.Qe2 Qe7 12.d3–+) 10.0-0?? (better is 10.Be2+=) 10...Nb6 11.Bb3 (11.Bf7 Rf7 12.c3–+) 11...Qd4 12.Nc3 Bg4 13.Ne2 Be2 14.Qe2 Rfe8 15.Qf3 Rab8 16.d3 Nbd5 17.c4 (17.Rae1 c6–+) 17...Nc3 18.a4 (18.Rae1 a6–+) 18...Ne2 19.Kh1 b6 (19...Qc3 20.Ba2–+) 20.Rfe1 (20.Rae1 Qb2 21.Bd1 Nc1–+) 20...Nf4 (20...Qc3 21.Reb1–+) 21.Red1 (21.Rf1 Nd7–+ (21...Nd3?! 22.Rad1–+)) 21...Re2 (21...Nd3 22.Qd3 Re1 23.Re1 Qd3 24.Re3–+) 22.Kg1 (22.Ra2 Ra2 23.Ba2 Rd8–+) 22...Rbe8 23.g3 (23.h3–+) 23...Nh3 (23...Nh3 24.Kg2 Qf2 25.Qf2 Rf2 26.Kh3 Re5 27.g4 Re3 28.Kh4 h6 29.d4 Rh2) 0–1. pumpkin (2375) – chinbrookjedi (2000), net–chess.com, 2009.

7.Nd4 Qf6 8.c3 (8.Qe2 Ne7 9.Qe4 Nb6+=) 8...Qe5 (8...Ne7 9.Nf3=) 9.Be2 Bd4 10.cd4 Qd5 (10...Qd6 11.Qb3+=) 11.0-0 Ndf6 (11...Ngf6 12.Qc2+/–) 12.Qa4 (12.Qc2 Qd6 13.Re1+/–) 12...Bd7 (12...Ne7!?+/–) 13.Nc3+– Qg5 (13...Qd6 14.Bf3 c6 15.Ba3+–) 14.Bf3 c6 (14...Bc8 15.b6 Kd8 16.bc7 Kc7 17.Nb5 Kd7 18.Rfc1+–) 15.Rfe1 Ne7 (15...Kd8 16.Qa5 b6+–) 16.bc6 bc6 17.Bc6 Bc6 (17...0-0 18.Bd7 Nd7 19.Qd7 Ng6+–) 18.Qc6 Nd7 19.Qa8 Nb8 20.Qb8 (20.Qb8 Kd7 21.Qb7 Kd8 22.Ba3 Qg2 23.Kg2 Ng6 24.Be7 Ne7 25.Re7 Re8 26.Qd7) 1–0. GuestKNRL – GuestMYTX, freechess.org, 2018.

7.Bd3 Qe7

8.Qe2+/– Nb6 9.a4+/–.

8.Qe2+/– Qe2 9.Be2 Ne7 10.0-0+/–.

8.Qe2+/– Qe2 9.Be2 Ngf6 10.Bd4 Bd4 11.Nd4 0-0 12.0-0 Nc5 13.Re1 Na4 (13...Re8 14.Na3+/-) 14.Na3 Rd8 15.c3 Ne4 (15...Be6 16.Ne6 fe6 17.Nc4+/-) 16.Bd1 Nb2?? (better 16...Nac5+/-) 17.Re4+- 1-0. GuestFHRY – steinoff, freechess.org, 2020.

8.Qe2+/– Qe2 9.Be2 Ngf6 10.Bd4 Bd4 11.Nd4 Nc5+/–.

8.Qe2+/– Qe2 9.Be2 Ngf6 10.Nd4 Ne5 11.0-0 (11.Nb3 Bd6+/–) 11...0-0 12.Nb3 (better is 12.Nf3 Ned7 13.Re1+/–) 12...Neg4?? (better is 12...Bd6+/–) 13.Nc5+– b6 (13...Re8 14.Re1+–) 14.Nd3 (14.Bf3 Rb8 15.Nd3 Bf5+–) 14...Re8 (14...a6 15.h3 Nh6 16.Bf6 gf6 17.Nc3+–) 15.Bf3 Rb8 16.h3 Nh6 17.Bf6 gf6 18.Bc6 (18.Nc3 Be6+–) 18...Re6 (18...Rd8 19.Re1+–) 19.Nc3 a6 20.Bd5 Rd6 (20...ab5 21.Be6 fe6 22.Nb5+–) 21.Ne4 (21.Nb4 ab5 22.Ne4 Rd8+–) 21...Rd8 22.Nb4 Kg7 (22...ab5 23.Nc6 Bb7 24.Nf6 Kg7 25.Nd8 Rd8 26.Nh5 Kg6 27.Bb7 Kh5 28.d3+–) 23.ba6 Ba6 (23...Bf5 24.Rae1+–) 24.Na6 Rd5 25.Nb8 c5 (25...f5 26.c4 Rd4 27.Nc3 Rd2 28.Na6+–) 26.d3 f5 (26...c4 27.Rfd1 f5 28.Nc3+–) 27.Nc3 Rd6 28.Rab1 f4 29.Na4 Nf5 30.Rb6 Rg6 31.Rg6 fg6 1–0. DEFFM – VelikiBrat, freechess.org, 2018.

7.Bd3 Qf6

8.0-0+/- Ne7 9.c3 0-0 10.cd4+/- Bd6 11.Nc3 (11.Re1 Qh6+/-) 11...Nb6 (11...Qh6 12.Ne4+/-) 12.Ne4 Qe6 (12...Qh6 13.Nd6 cd6 14.Rc1+/-) 13.Neg5 (13.Re1 Nbd5+-) 13...Qh6 14.Bh7 Kh8 15.Bd3 Bf5 16.Bf5 Nf5 17.Ne4 Nh4 (17...Nc4 18.Bc3+-) 18.Nd6 cd6 19.Nh4 Qh4 20.Rc1 Rac8 21.Qf3 Rc1 22.Rc1 Qe7 (22...Qg5 23.Bc3 Qd5 24.Qd5 Nd5 25.Bb2+-) 23.d5 Rc8?? (23...Re8 24.h3 Qd7+-) 24.Qh3 Kg8 25.Rc8 Nc8 26.Qc8 Kh7 27.Qh3 Kg8 28.Qe3 Qd7 (28...Qc7 29.h3 Qc2 30.Bc3 Qb1 31.Kh2 Qb5 32.Qg3+-) 29.Qg3 g6 (29...f5 30.Qg6 Qe7 31.g3+-) 30.Qc3 Kf8 31.Qh8 Ke7 32.Bf6 1-0. DEFFM – GuestTRMQ, freechess.org, 2019.

8.0-0+/- Ne7 9.c3 dc3 10.dc3 Bd6+=.

8.0-0+/- Ne7 9.c3 dc3 10.Bc3?! Qh6+=.

8.0-0+/- Ne7 9.c3 dc3 10.Nc3+/- 0-0 11.Qc2 h6? (better 11...Qh6+-) 12.Ne4 Qb6 13.Qc3 f6 14.Bc4 (14.Qc4 Rf7 15.Bc2 c6+-) 14...Kh8 15.d4 Bd6 16.Nh4 c6?? (16...Re8+-) 17.Nd6 c5 (17...cb5 18.Nf7 Kh7+-) 18.Rfe1 Qd6 (18...cd4 19.Qg3 Ne5 20.Re5 Qd6 21.Re7 Qg3 22.hg3+-) 19.Re7! Qe7 (19...cd4 20.Ng6 Kh7+-) 20.Ng6 (20.Ng6 Kh7 21.Ne7+-) 1-0. DEFFM – GOLOBODEXX, freechess.org, 2019.

8.0-0+/- Ne7 9.c3 dc3 10.Nc3 Bd4 11.Nd5!+/- Nd5 12.Bd4 Qd8 (better 12...Qd6 13.Re1 Kf8+-) 13.Bg7 Rg8 14.Re1 Ne7 15.Bd4 Nb6 16.Bh7 Rg4 17.Be5 Be6 18.h3 (18.Be4 Bd5 19.Bf5 Rg8+-) 18...Rc4 19.Ng5 Qd5 20.Ne6 fe6 21.Qh5 Kd7 22.Qf7 Rh4 (22...Nbc8 23.Bf6 Rf4 24.Bg6 Rf6 25.Qe8 Kd6 26.Qd8 Kc5 27.Qc7 Nc6 28.bc6 bc6 29.Rac1 Kb4 30.Rb1 Ka3 31.Be4 Rf4 32.Bd5 Nb6 33.Re3 Ka4 34.Qc6 Ka5 35.Qb5) 23.Bf6 Qd6 (23...Rh7 24.Qh7 Qd6+-) 24.Bf5 Rh3 25.Be6 Kd8 (25...Qe6 26.Qe6 Kd8 27.Qe7 Kc8 28.Qd8) 26.Qf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0+/- Ne7 9.c3 Ne5!? 10.Ne5 Qe5+/-.

8.0-0+/- Ne7 9.Re1 Qd6+/-.

5.e3 de3

6.de3 Bb4 7.Nbd2 Ngf6 8.a3 (8.Be5? Ne5 9.Ne5 Ne4-+) 8...Bc5 9.Bc4 (9.Ne5 Ne5 10.Be5 Bg4=) 9...0-0 (9...Qe7 10.0-0=) 10.0-0 (10.Ne5 Ne5 11.Be5+=) 10...b6 (better 10...Qe7!?=) 11.Ne5+/- Ne5 12.Be5 Ng4 (12...Bb7 13.Nb3 Bd6 14.Bd6 Qd6 15.Qd6 cd6 16.Bd3+/-) 13.Nf3 Ne5 14.Ne5 Be6 15.Be6 fe6 16.Nc6 Qg5 17.Qd7 Rf7? (better 17...Qf5+/-) 18.Qe6+- Raf8 19.Ne5 Bd6? (19...Qf5 20.Qd5 Bd6+-) 20.Nf7 Rf7 21.a4 Qh5 22.Qe8 Rf8 (22...Bf8+-) 23.Qh5 1-0. DEFFM – GuestPJQX, freechess.org, 2021.

6.de3 e4 7.Nfd2 Ngf6 8.Be2 Bb4 (8...Be7 9.Bd4=) 9.0-0 0-0 (9...Qe7!?=) 10.Ne4!+= Ne4 (10...Qe7 11.a3 Bc5 12.Nf6 Nf6 13.Nd2+/-) 11.Qd4+/- Ndf6 (11...Qg5 12.h4 Qg6 13.Qb4+/-) 12.Qb4 Qd6 13.Qd6 cd6 (13...Nd6 14.Bf6 gf6 15.Nc3+/-) 14.f3 Nc5 15.Bf6 (15.Rd1 Rd8+-) 15...gf6 16.Nc3 Be6 17.Rfd1 Rfd8 18.Nd5 Kg7 19.Nf4 Bf5 (19...Na4 20.Rd4 Nc3 21.Bd3+/-) 20.Nh5 Kg6 21.Nf4 Kg7 22.Rd2 Na4 (22...Be6 23.g4+-) 23.Nh5 Kg6 (23...Kh6 24.Nf6 Nc3 25.g4 Ne2 26.Re2+-) 24.g4 Nc3?? (24...Bc8+-) 25.Nf4 (25.Nf4 Kg5 26.gf5 Kf5 27.Bc4+-; 25.gf5?! Kh5 26.Kf2 Kg5+/-) 1-0. GuestPCMQ – mockingbirdz, freechess.org, 2020.

6.de3 e4 7.Nd4 Bb4 8.c3 Ba5 (8...Bf8 9.Be2=) 9.Qg4 g6? (better 9...Ngf6!? 10.Qg7 Rg8+=) 10.Qe4+- Qe7 11.Nd2 Ngf6 12.Qe7 Ke7 13.a4 Nc5? (better 13...Bb6+-) 14.Nc4 Bb6 15.a5 (15.a5 Be6 16.Ba3+- (16.Nb6?! cb6 17.Ba3 Nfe4+-); 15.Nb6?! ab6 16.Ba3 Nfd7+/-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.de3 e4 7.Nd4 Nc5 8.Bc4 (8.Nc3 Nf6=) 8...Nf6 (8...Qg5 9.Nc3 Nf6 10.Kf1=+) 9.0-0 (9.Nc3 Bd6=) 9...Bd6 10.Nb3 (10.Nd2 Na4 11.Qc1 Nb2 12.Qb2 0-0=) 10...Nb3 (10...Na4 11.Ba3=) 11.Bb3 (11.ab3 Qe7=) 11...Bh2 (11...Bg4 12.Qd4 Be2 13.Nc3 Bf1 14.Kf1=) 12.Kh2= Ng4 13.Kg1 (13.Kg3 Qg5 14.Qd5 Ne5 15.Kh2 Nf3 16.gf3 Qh6 17.Kg1 Qg6 18.Kh1 Qh6 19.Kg1 Qg6 20.Kh1 Qh6 21.Kg1=) 13...Qh4= 14.Be5 Ne5 15.Qd5 f6? (better 15...Qg5 16.Qe4 Qf5=) 16.Rd1+- Bg4 17.Qb7 (better 17.Rd4 c6 18.bc6 bc6 19.Qe4+-) 17...Bd1?? (better 17...Nf3 18.gf3 Bf3 19.Qc6 Kf8 20.Qa8 Ke7 21.Rd7 Kd7 22.Qc6 Kc8 23.Qa8 Kd7 24.Qd5 Kc8 25.Qa8 Kd7=) 18.Qa8+- Ke7 (18...Kd7 19.Qh8 Qg4 20.Nd2+-) 19.Qh8 Ng4 (19...Qg5 20.Nc3 Bg4 21.Nd5 Kf7 22.Nf4 Ke7 23.Qa8+-) 20.Qg7 Kd6 (20...Kd8 21.Qg8 Kd7 22.Be6 Kd6 23.Bg4 Qg4 24.Qd8 Ke6 25.Nd2+-) 21.Qf8 Ke5 (21...Kd7 22.Qf7 Kd8 23.Qg8 Ke7 24.Qe6 Kd8 25.Qd5 Kc8 26.Qg8 Kd7 27.Be6 Kd6 28.Bg4 Qg4 29.Qd8 Ke6+-) 22.Qc5 1-0. GuestZYMW – GuestLZPW, freechess.org, 2020.

6.de3 e4 7.Nd4 Ngf6 8.Be2 Be7 9.0-0 0-0 10.Nf5 Bc5 11.Nd2 Re8 12.Nb3 Bb6 13.a4 a5 14.Bc4 Ne5 (14...Nc5 15.Qd8 Rd8 16.Nh6 gh6 17.Nc5 Bc5 18.Bf6+/-) 15.Qd8 Rd8 16.Nh6! gh6 17.Be5 Nd5 18.Nd4 Be6 (18...Kf8!?+/-) 19.Ne6+- fe6 20.c3 Kf7 21.Be2 Rg8 22.c4 Nf6 23.Rfc1 Bc5 (23...Nd7!? 24.Bh5 Ke7+/-) 24.Bc7+- b6 25.Rd1 Rac8 26.Bd6 Rgd8 27.Bc5 Rd1 (27...bc5 28.Kf1+-) 28.Rd1 Rc5 29.Rd6 h5 (29...Rc7 30.Rb6 Nd7 31.Ra6+-) 30.Rb6 h4 (30...Nd7 31.Ra6+-) 31.Ra6 Rc7 (31...Nd7 32.Ra5 Nb6 33.Ra7 Kg6 34.Ra6 Nc4 35.Re6 Kf5 36.Rc6 Rc6 37.bc6+-) 32.b6 Rc8 33.Ra7 Kg6 34.b7 Rb8 35.c5 Nd5 36.c6 Nc7 37.Ra5 Rd8 (37...h3 38.Rc5 e5 39.Re5+-) 38.Rh5 Na6 (38...h6+-) 39.Ba6 Rd1 40.Bf1 (40.Bf1 Kh5 41.c7+-) 1-0. DEFFM – merinov, freechess.org, 2021.

6.fe3 f6 7.Bc4 c6 8.a4 (8.Nc3 cb5 9.Bb5 a6+-) 8...Nc5 (8...Nb6!? 9.Bb3 Nd5+/-) 9.0-0+- Bd7?? (9...Be6 10.Qe2 Bc4 11.Qc4+-) 10.Be5 (better 10.Ne5 Nh6 11.bc6 bc6 12.Bd4+-) 10...fe5 (10...cb5 11.ab5 fe5 12.Ne5+-) 11.Ne5 Nf6 (11...Qh4 12.g3 Qe7+-) 12.Nf7 (12.Nf7 Bg4 13.Qe1+-) 1-0. GuestYTKK – GuestXSYK, freechess.org, 2019.

6.Ne5 ef2 7.Kf2 Qf6 8.Ke1 Ne5–/+.

6.de3 Bd6

7.Bc4 Qe7 8.e4 Ngf6 9.Nbd2 b6 10.0-0 Bb7 11.Nh4 (11.Re1 0-0=) 11...Ne4=+ 12.Ne4 Be4 13.Qg4 Bc2 14.Bd5 0-0-0 15.Rac1 Ba4?? (better 15...h5 16.Qc4 Bd3 17.Qd3 Qh4 18.Bf7 Kb8=) 16.Qa4 (16.Qa4 Nc5 17.Qa7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Ne7?? 8.Ng5+- 0-0? (better 8...Nd5 9.Nf7 Kf7 10.Bd5 Ke7+-) 9.Qh5 h6 10.Nf7 (10.Nf7 Rf7 11.Qf7 Kh8 12.Nc3+-; 10.Bf7?! Kh8 11.Bc4 Qe8 12.Qe8 Re8 13.Nf7 Kh7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bc4 Ngf6=.

7.Bc4 h6 8.0-0 Ngf6 9.Nbd2 0-0 10.e4 c6 11.a4 cb5 12.ab5 a6 13.Bb3 Nb6 (13...Qc7!?=) 14.Ne5 ab5 (14...Qc7 15.Nef3 Ng4 16.h3+/-) 15.Ra8 Na8 16.Nf7 Rf7 17.e5 Be5 (17...Bg4 18.Nf3 Be7 19.ef6 (19.Bf7?! Kf7 20.ef6 Qd1 21.Rd1 gf6+-) 19...Qd1 20.fe7+- (20.Rd1?! gf6 21.Re1 Kf8+-)) 18.Be5 Ng4 (18...Bf5 19.Qf3 Bc2 20.Bf6 Qf6 21.Bc2 (21.Bf7?! Qf7 22.Rc1 Qf3 23.Nf3 Bf5+-) 21...Qf3 22.Nf3+- (22.gf3?! Kf8+-)) 19.Nf3 Kf8 (19...Qe8 20.Bf7 Kf7+-) 20.Qd8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nbd2 Ngf6 8.Nc4 Will e5 fall? White gets the initiative 8...0-0 (better 8...e4!? 9.Nd6 cd6=) 9.Nd6+– cd6 10.Qd6 Qa5 (10...e4 11.Nd2+–) 11.c3 (11.Qd2 Qc7+–) 11...Rd8 (11...e4 12.Nd2+–) 12.Bc4 b6? (better 12...Nf8 13.Qe5 Be6+=) 13.Ne5+– Bb7 (13...Rf8 14.Nf7 Qa4+–) 14.Nf7 (14.Bf7?! Kh8 15.0-0-0 Rf8 16.Nd7 Rf7 17.Nf6 gf6+–) 14...Bd5 (14...Rdb8 15.Qe6 h5 16.Ne5 Kh8 17.Nd7 Bc8+–) 15.Bd5 Nd5 (15...Qb5 16.Nd8 Qd5 17.Qd5 Nd5+–) 16.Qd5 Nf6 17.Nh6 (17.Nh6 Kh8 18.Qg8 Ng8 19.Nf7; 17.Nd8 Nd5 18.Ne6 Qb5–/+) 1–0. onur604 (2320) – DrOuBBleY (2010), lichess.org, 2020.

7.Bd3 Ngf6= 8.Nbd2 0-0 9.0-0 Re8 10.Ng5 h6 (10...Nc5 11.Bc4 Rf8 12.f3=) 11.Nge4 Be7 (11...Bb4 12.Qe2+=) 12.Qf3 Ne4 13.Ne4 f6 (13...Bd6 14.Rad1+/-) 14.Bc4 (14.Rfd1 Kh8+-) 14...Kh8+/- 15.Rfd1 c6 16.a4 (16.bc6 bc6 17.Ng3 Qb6+-) 16...Qc7+/- 17.Bf7 (17.bc6 bc6 18.Ng3 Nc5+/-) 17...Rf8+= 18.Bb3 Nc5 19.Nc5 Bc5 20.Qe4 Re8 21.Rd3 f5 (21...cb5 22.ab5 Bd7 23.c4=) 22.Qf3 e4?? (better 22...Kh7 23.Rdd1 e4+=) 23.Qh5+- Be6 24.Qh6 Kg8 25.Be6 Re6 26.Qe6 (26.Qe6 Qf7 27.Qf7 Kf7 28.Rd7 Ke6 29.Rb7 cb5 30.ab5+-) 1-0. DEFFM – GuestYSQM, freechess.org, 2021.

4.Nf3 e4

5.Nd4+= Bb4 6.Ne6 Be6 (6...fe6 7.Bg7) 7.Bg7 f5 (7...a6 8.Bh8 ab5 9.Nc3 Bc3 10.Bc3+– (< 10.dc3 Qd1 11.Kd1 Ra2 12.Ra2 Ba2+–)) 8.Bh8 f4 9.c3 e3 (9...Bd6+–) 10.cb4 ef2 11.Kf2 Qd4 (11...Qh4 12.Kg1 Nf6+–) 12.Bd4 (12...Ne7 13.e4+–) 1–0. Taulien,Hans_Juergen – Orion,Martin, remoteschach.de, 2001.

5.Nd4+= c5 6.bc6 Nc6 7.Nc6 bc6 8.e3 Nf6 9.Bc4 Bd6 10.Bd4 0-0 (10...Be6 11.Be2+=) 11.Nc3+/- Bf5 12.f4 ef3 (12...Rb8 13.0-0+=) 13.Qf3+/- Bc2 (13...Be6 A) 14.Qc6? Rc8 15.Bf6 gf6-+ (15...Rc6?! 16.Bd8 Rc4 17.Ba5+=); B) 14.Bb3 c5 15.Bf6 Qf6 16.Qf6 gf6 17.Be6 fe6 18.Rb1+/-) 14.0-0 (14.d3!? Nd7 15.Rc1+/-) 14...Bg6+/- 15.Bf6 (15.g3 Rc8+/-) 15...Qf6+= 16.Qf6 gf6 17.Rf6 Rad8 18.Rf2 Bb4 19.Rc1 Kg7 20.d4 Rfe8 21.Rf3 Rb8 22.Bb3 a5 23.Rg3 (23.h3 Rb7+=) 23...c5 (23...Bd6 24.Rh3+=) 24.Nd5 (24.d5 Ba3 25.Rd1 c4 26.Bc4 Bd6+/-) 24...cd4= 25.ed4 Bd6 26.Rg4 h5 27.Rh4 Ba3 (27...Re4 28.Re4 Be4 29.Nc7=) 28.Rf1+= Bb2 29.Nf6 (29.Rd1 Kh6+=) 29...Rh8= 30.Bd1 The pressure on h5 grows 30...Rb5 (30...Rb4 31.Nh5 Kf8 32.a3=) 31.Kh1 (31.Be2 Rb4 32.Nh5 Kh6+=) 31...Bc3 32.Be2 Rb2 33.Nh5 Kg8 34.Nf6 Kg7 35.Rh8 Kh8 36.Bc4 Bd4 37.Nd5 Be4 38.Nf4 Be5 39.Ne2 (39.Bf7?? Bf4 40.Rg1 Be3-+) 39...Rb4 40.Bf7? (better 40.Ba6=+) 40...Bd3-+ 41.Bh5 Rb2 42.g3 Be2 (worse 42...Re2 43.Be2 Be2 44.Rf5+=) 43.Rf5 Bc3 44.Be2 Re2 45.Rf3 Be1 46.a3 Ra2 47.h4 (47.Re3 Bf2 48.Rf3 Kg7-+) 47...Kg7 48.Re3 (48.Kg1 a4-+) 48...Bf2 49.Rf3 Kg6 50.a4 Bd4 51.g4 (51.Rf4 Ra4 52.Rg4 Kh7-+) 51...Ra4 52.Rf5 White prepares the advance h5 (52.Rd3 Rb4-+) 52...Ra1 53.Kg2 a4 54.h5 (54.Rd5 Bb2 55.Rd6 Kf7-+) 54...Kh6 55.Rd5 (55.Ra5 a3 56.Kg3 Kg7-+) 55...Bb2 56.Kg3 (56.Rd6 Kg5 57.Rg6 Kf4 58.h6-+) 56...a3 57.Rd6 Kh7 58.Ra6 a2 59.Kg2 Bd4 60.Kh2 Be3 61.Kg2 (61.Ra4 Kh6-+) 61...Rg1 62.Kf3 a1Q 63.Ra1 Ra1 64.Ke3 Ra4 0-1. DEFFM – GuestFHSH, freechess.org, 2019.

5.Nd4+= Bc5 6.Nb3 Bb4?? 7.Bg7+– Qh4 (7...Bd7 8.Bh8 Bb5 9.Nc3+–) 8.c3 Bd6 9.Bh8 Bh2 10.Be5! Nd7 (10...Be5 11.Rh4) 11.Bc7! Ngf6 (11...Bc7 12.Rh4) 12.Rh2 Qg5 13.Nd4 Nc5 14.e3 Bg4 15.f3 ef3 (15...Rc8 16.Bf4 Qg6 17.Rh6 Bf3 18.gf3+–) 16.gf3 Nd3 17.Bd3 Bd7 18.Qb3 Qg1 19.Bf1 Qh2 20.Bh2 (20...Rd8 21.Bc4+–) 1–0. Taulien,Hans_Juergen – Orion,Martin, remoteschach.de, 2002.

5.Nd4+= Bc5 6.Nb3 Bf8 7.e3 (7.g3 Nf6+-) 7...Nf6+/- 8.Bc4 (8.Bf6 Qf6 9.Nc3 Qg6+/-) 8...c6 (8...Nbd7 9.0-0+/-) 9.a4 (9.0-0 Bd6 10.f3 Nbd7 11.fe4 Qc7+-) 9...Bd7 (9...Nbd7!?+/-) 10.0-0 cb5 (10...Bd6 11.h3+-) 11.ab5 (11.Bb5?! Bd6+/-) 11...Qb6? (11...Qc7 12.Be2 Bd6+-) 12.Bd4 Qc7 13.d3 ed3 (13...Qc8 14.Bf6 gf6 15.Qh5+-) 14.cd3 (better 14.Qd3 a6 15.Nc3+-) 14...b6 (14...Bd6 15.Ra7 Ra7+-) 15.Bf6 gf6 16.Qf3 Bc8 (16...Nc6 17.bc6 Be6 18.Nc3+-) 17.Qa8 Bb7 18.Ra7 Ba8 19.Rc7 (19.Ra8?! Bb4+-) 19...Be7 20.Rc8 (20.Rc8 Bd8 21.Rb8+-) 1-0. DEFFM – guestbcci, freechess.org, 2019.

5.Nd4+= Bc5 6.e3 Nf6 7.Bc4 Bd4 (7...Nbd7 8.0-0+–) 8.Bd4 0-0 (8...c5 9.Bf6 (worse 9.Bc5 Qc7–/+) 9...Qf6 10.Nc3+–) 9.0-0 (9.Nc3 Re8+–) 9...h6 (9...Bg4!? 10.Bf6 Qf6 11.Qg4 Qa1 12.Qe4 Nd7+–) 10.Nc3+– Bg4? (better 10...a6+–) 11.Bf6 Bd1 (11...Qd7 12.f3 ef3 13.gf3 Bh3+–) 12.Bd8 Bc2 13.Bc7 Nd7 (13...Bd3 14.Bd3 ed3 15.Nd5+–) 14.Bd5 Rac8 15.Bd6 Rfe8 (15...Rfd8 16.Bb7 Rc4 17.Rfc1+–) 16.Bb7 Rc4 (16...Rcd8 17.Bc7 Nf6 18.Bd8 Rd8 19.a3+–) 17.Bd5 Rcc8 18.Bc6 Bd3 (18...Nf6 19.Be8 Ne8 20.Bg3+–) 19.Bd7 Bf1 20.Be8 Bg2 (20...Re8 21.Kf1 f5 22.Bc5+–) 21.Bf7! Kf7 22.Kg2 Rd8 23.Ne4 Ke6 24.Bc5 Ke5 25.f3 Rd5 26.Bd4 Ke6 27.a4 g5 28.Ba7 g4 29.b6 gf3 30.Kf3 Rf5 31.Ke2 Rh5 32.b7 Rh2 33.Kd3 (33.Kd3 Kd5 34.b8Q Rd2 35.Kd2 h5 36.Qd6 Ke4 37.Rf1 h4 38.Rf4) 1–0. DEFFM – GuestPDNZ, freechess.org, 2019.

5.Nd4+= c6 6.d3 c5 (6...Nf6 7.e3+/–) 7.Nb3 ed3 8.Nc3 (8.Qd3 Qd3 9.ed3 Nd7+/–) 8...c4 (8...dc2 9.Qc2 Nf6 10.Rd1+=) 9.Nd2+/– de2 (9...dc2 10.Qc2 Be6 11.e4+/–) 10.Qe2 (10.Be2 Nf6+/–) 10...Be7 (10...Be6 11.Rd1+/–) 11.0-0-0 (11.Rd1 Be6 12.Nc4 Nd7+–) 11...a6 (better is 11...Be6 12.Nc4 Nd7+–) 12.Nc4 ab5?? (12...Nd7 13.Nd5 Kf8+–) 13.Rd8 Kd8 14.Nb5 Nf6 15.Nb6 Bg4 16.Qc4 Be6 17.Qc7 Ke8 18.Qb7 Ra2 19.Qb8 Bd8+– 20.Nd6 Ke7 21.Ndc8 Bc8 22.Nc8 Kd7 23.Bb5 Ke6 24.Qe5 1–0. attirov (1840) – Revcedbur, internet, 2008.

5.Nd4+= Nf6 6.e3+=.

4.Nf3 f6

5.c3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.cd4 Qa5 (better is 9...e4!? 10.Ng1 f5=) 10.Bc3 Qb5 11.de5 fe5 (11...Qd5 12.d4+/–) 12.Be5 (12.e4!? Qc5 13.Ne5+–) 12...Nd7+/– 13.e3 Qd5 14.Bc3 (14.Nc3 Qe6 15.Bf4 Be7+/–) 14...Ngf6 15.Be2 Ne4 16.Bd4 c5 (16...Qe6 17.Nc3+/–) 17.Ba1 (17.Nc3 Qc6 18.Ne5 Ne5 19.Be5 Nd6 20.Bd6 Qd6 21.Qa4 Bd7 22.Qa8 Ke7 23.Qb7 Qc6 24.Nd5 Kf7 25.Qc6 Bc6+–) 17...Bd6 (17...c4 18.Qc2 b5 19.d3+/–) 18.0-0 0-0 19.Nc3 Qf5 (19...Qe6 20.Ne4 Qe4 21.d4+/–) 20.d3 (better is 20.Bd3!? Ndf6 21.Qc2+–) 20...Nc3+/– 21.Bc3 b5 22.d4?? b4 23.Bb2 cd4? 24.Bd4 Bb7? 25.g3?? Bf3–+ 26.Bf3 Be5?? 27.Bc6 Bd4 28.Qd4 Nf6 29.Qb4 h5 30.Qc4 Kh8 31.Qh4 g6 32.Qa4 Qh3 33.Qd4 Kh7 34.Bg2 Qf5 35.Qa7 Kh6 36.Qa3 Ng4 37.e4 Qf6 38.Qc1 Kh7 39.Qc7 Rf7 40.Qc1?? Nf2?? (41.Qe3 Qe5+–; 40...Rf8 41.Qc5 Ne5+–) +–. stoker – vello01, Live Game Caissa's Web, 2004.

5.c3 c5 6.bc6 Nc6 7.cd4 Nd4 8.Nd4 ed4 9.d3 Bb4 10.Nd2 Ne7 11.Qa4 Nc6 12.Rb1 Bd2 13.Kd2 The isolani on d4 becomes a target 13...0-0 14.g3 Be6 15.Bg2 a6 (15...Bd5 16.Bd5 Qd5 17.Qb3 Qb3 18.ab3=) 16.Rhd1 (better 16.Bc6!? bc6 17.Bd4+/-) 16...b5=+ 17.Qc2?? (better 17.Qa3!? b4 18.Qa4=) 17...Rc8 (better 17...Qa5!? 18.Bc3 dc3 19.Qc3 Rac8 20.Qa5 Na5-+) 18.Ke1 Ne5 19.Qd2 Ng4 (19...Ba2!? 20.Ra1 Bd5-/+) 20.h3 (20.Qb4 Nh2 21.Bd4 Ba2=) 20...Ne5=+ 21.Kf1 (21.Rdc1 Qd7=+) 21...Ba2 (21...Qd7 22.Kg1-/+) 22.Ra1=+ Bb3 23.Rdb1 (better 23.Rdc1=+) 23...Qb6 (better 23...Rc2 24.Qb4 Bd5 25.Qd4 Bg2 26.Kg2 Re2=+) 24.Ba3+/- Rfe8? (better 24...Be6 25.Bf8 Rf8+/-) 25.Rb3+- a5 26.Bb2 b4 27.Bc1 Rc3 (27...Rc5 28.Rbb1+-) 28.Rbb1 (28.Qa2 Qe6 29.Rc3 Qa2 30.Ra2 dc3 31.Ra5 Rb8+-) 28...Qb5 (28...Rc5 29.Qa2 Kh8 30.Bb2+-) 29.Bb2 a4 (29...Rb3+-) 30.Bc3 dc3 31.Qc3! bc3 32.Rb5 Rc8 33.Rc1 Nd7 (33...Kf8 34.Ra5+-) 34.Ra5 Nb6 35.Rb5 Nd7 36.Rb4 a3 37.Ra4 Nb6 38.Ra3 Nd7 39.Rac3 Rb8 40.Rc8 Kf7 (40...Rc8 41.Rc8 Kf7 42.Rc7+-) 41.Rb8 Nb8 42.Rc8 (better 42.Rc7 Ke6 43.Rg7 h6+-) 42...Nc6 (42...Nd7 43.Rc7 Ke6 44.Bc6+-) 43.Rc6 1-0. Jimito100 (1955) - DangerKaspa (1920), Rated Bullet game, lichess.org, 2020.

5.d3 Bd7 6.c4 c6 7.a4 Bb4 8.Nbd2 a6 9.Qb3 Qa5 10.Qd1 Bc3 (10...ab5? 11.ab5 Qa1 12.Ba1 cb5 13.cb5 Bb5 14.e3 de3 15.fe3+–; 10...cb5?! 11.ab5 Qb6 12.Qa4=) 11.Rb1 ab5 12.ab5 cb5 13.cb5 Bb2 14.Rb2 Bb5 15.g3 Ba4 16.Qb1 b5 17.Bg2 Nd7 18.0-0 Rc8 19.Ne4 Qb6 20.Nh4 Ne7 21.Bh3 g6 22.Qa2 f5 23.Ng5? (better is 23.Nf3–/+) 23...Qf6–+ 24.Ngf3 g5 25.Ng5 Qg5 26.Qe6?! (26.Nf5 Nf5 27.Qe6 Qe7 28.Qf5–+) 26...Rc6 27.Qa2 Rg8 28.Bg2 Rc1 29.Nf3 Rf1 30.Kf1 Qf6 31.Ne1 Qf7 32.Qb1 Nd5 33.Qc1 Nc3 34.e3 Kd8 35.ed4 ed4 36.Nf3 Qf6 37.Qf4 Rg4 38.Qc1 Nc5 39.Ne1 Nb3 40.Qc2 f4 41.h3 Rg7 42.g4 h5! 43.f3 (43.gh5 Re7 Combination) 43...Rd7 (better is 43...Re7!? 44.Rb3 Qe5 45.Qd2 Bb3 46.g5–+) 44.Qf2 0–1. Biskup,Izabela (1800) – Piepiorka,Paulina (1820), DMO Poland, 2007.

5.e3 a5? 6.Bc4 (better 6.ed4 e4 7.Qe2+/-) 6...b6?? (better 6...Nd7 7.ed4 Nb6+-) 7.Ne5! de3 (7...fe5 8.Qh5 Double attack (8.Qh5 Decoy)) 8.Bf7 Ke7 9.Ba3 c5 (9...Qd6 10.Bd5 c5 11.bc6 fe5 12.c7+-) 10.bc6 (10.bc6 Qd6 11.Bd6 Kd6 12.Nc4 Kc7 13.Qf3 ed2 14.Kd2 Nc6 15.Nc3+-) 1-0. DEFFM – GuestZNQD, freechess.org, 2019.

5.e3 c6 6.a4 cb5 7.ab5 (better 7.Bb5 Nc6 8.ed4+–) 7...Bd7? (better 7...de3!? 8.fe3 Be6+=) 8.Ne5!+– fe5 (better 8...Be6 9.Bc4 Bc4 10.Nc4 de3 11.Ne3 Nh6+–) 9.Qh5 g6 (9...Ke7 10.Qe5 Be6+–) 10.Qe5 Be7 (10...Ne7 11.Qh8 Qc7 12.Bd4 Qc2 13.Nc3+– (13.Qh7 Qc1 14.Ke2 Bb5 15.d3 Nbc6+=)) 11.Qh8 Kf8 (11...Be6 12.Bd4 h6+–) 12.Bc4 (12.Bc4 Be6 13.Be6+–) 1–0. GuestGMDT – GuestJWCH, freechess.org, 2020.

5.e3 c6 6.ed4 cb5? 7.de5 (7.Bb5 Bd7 8.Bd7 Nd7 9.de5 fe5 10.Ne5 Ngf6+-) 7...Qe7 (better 7...a6!?+-) 8.Bb5 Bd7 9.Bd7 Nd7 10.0-0 fe5 11.Re1 0-0-0 12.Ne5 Qb4? (12...Ne5 13.Be5 Nf6+-) 13.Nf7 Qb2 14.Nc3 Qb6 15.Nh8 Bc5 16.Ne4 (16.Rb1 Bf2 17.Kf1 Qf6+-) 16...Ngf6?! (16...Nh6 17.Rb1 (17.Nc5?! Qc5 18.d4 Qd6+/-) 17...Qc7 18.Rb3+-) 17.Rb1 (17.Nc5!? Nc5 18.Nf7 Rd4+-) 17...Ne4 18.Rb6 (18.Rb6 Nf2 19.Qh5 Bb6 20.Nf7+- (20.Qh7?! Nh3 21.Kf1 Rf8 22.Ke2 Re8 23.Kf3 Ng5 24.Kf4 Nh7 25.Re8 Kc7+/-); 18.Re4?! Qf6 19.d4 Bd6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 c6 6.ed4 e4 7.Qe2 (7.Nh4 Nh6 8.Qe2+/-) 7...f5 (better 7...Qe7!? 8.Nh4 Nh6+/-) 8.Ne5 cb5? (better 8...Nh6 9.Qh5 g6+-) 9.Qh5 Ke7 (9...g6 10.Bb5 Nc6+-) 10.Qf7 Kd6 11.Ba3 b4 12.Bb4 1-0. DEFFM – steinoff, freechess.org, 2019.

5.e3 Qd5 6.ed4 ed4 7.Bd4 Bb4 8.Bd3 Nh6 (8...Qe6 9.Be3+-) 9.Qe2 (better 9.0-0 0-0 10.Qe2+-) 9...Be6?? (better 9...Qe6+-) 10.Be4 Qd6 (10...Qd7 11.Bb7 c5 12.bc6 Nc6 13.Ba8+-) 11.Bb7 Nf5 (11...0-0 12.Ba8 Nd7 13.Be4+-) 12.Ba8 Nd4 (12...Nd7 13.Bc3 Bc3 14.Nc3+-) 13.Nd4 Qd4 (13...Kf7 14.c3 Nd7 15.Bc6+-) 14.Qe6 Be7 (14...Kd8 15.c3 Qd3 16.Be4 Qb5 17.cb4+-) 15.0-0 Qa1 (15...Qd6 16.Qb3 Nd7+-) 16.Re1 Qe5 17.Re5 fe5 18.Qc8 Bd8 1-0. GuestTFGS – GuestRKQW, freechess.org, 2020.

5.e3 Qd5 6.ed4 ed4 7.Bd4 Nh6+-.

5.e3 Qd5 6.ed4 Qe4 7.Be2 Bg4 (7...ed4 8.0-0 Bc5 9.Re1+-) 8.Nc3 Qg6 9.de5 (better 9.Nd5 Kd8 10.de5+-) 9...Bf3 (9...Nd7 10.Nh4 Be2 11.Qe2 Qc2 12.ef6 Kd8+-) 10.Bf3 Nd7 11.Bh5 Ne5 12.Bg6 hg6 13.f4 Nf7 (13...Nd7 14.Nd5 0-0-0 15.Qg4+-) 14.Qe2 Be7 15.Nd5 Rc8 16.Ba3 c5 17.bc6! Rc6 (17...bc6 18.Ne7 Double attack (18.Ne7 Decoy); 17...Rc6 18.Ne7 Double attack (18.Ne7 Decoy)) 18.Ne7 Rc2 19.Ng6 Kd7 20.Qd3 Nd6 21.Qd6 (21.Nf8 Kc6 22.Qd6 Kb5 23.Rb1 Rb2 24.Rb2 Ka5 25.Qb4 Ka6 26.Qb5) 21...Kc8 22.Qe6 Kc7 23.Bd6 Kb6 (23...Kc6 24.Be7 Kb5 25.a4 Ka5 26.Qd5 Rc5 27.Qc5 Ka6 28.Qb5) 24.Rb1 Ka6 (24...Ka5 25.Qf5 Rc5 26.Qc5 Ka6 27.Qb5) 25.Qe2 Ka5 (25...Rc4 26.Qc4 b5 27.Qb5) 26.Qb5 1-0. GuestJYTV – pulovaz, freechess.org, 2019.

5.e3 Bd7 6.Bc4 Qe7? (better 6...Bg4+-) 7.Ba3 Qd8 8.Ne5! (8.ed4?! Ba3 9.Na3 Qe7+/-) 8...fe5 (8...fe5 9.Qh5 Double attack (9.Qh5 Decoy)) 9.Qh5 g6 10.Qe5 (10.Qe5 Ne7 11.Qh8+-) 1-0. DEFFM – GuestYPNH, freechess.org, 2019.

5.e3 Bd7 6.ed4 ed4 7.Bc4 c5 (7...Qe7 8.Kf1 a6 9.Ba3+- (9.Bd4?! ab5 10.Bd3 c5=)) 8.0-0 g5 (8...Bd6 9.c3 a6+-) 9.Ng5 fg5 (9...Qb6 10.Re1 Kd8 11.Nf7 Kc7 12.Nh8 Nh6+-) 10.Qh5 Ke7 11.Qg5 Nf6 (11...Ke8 12.Qh5 Ke7 13.Qe5 Be6 14.Qe6) 12.Qe5 (12.Qe5 Be6 13.Qe6) 1-0. DEFFM – ohohhh, freechess.org, 2019.

5.e3 e4? 6.Nd4+- Bc5?? (6...c5 7.Ne2 Nd7+-) 7.Qh5 g6 8.Qc5 b6 (8...Nd7 9.Qa3 Ne5 10.Nc3+-) 9.Qc4 Ne7 10.Nc3 Nf5 (10...f5 11.Ba3 Qd7 12.Be7 Ke7 13.Nd5 Kd8 14.d3+-) 11.Ne4 (better 11.Nf5!? gf5 12.Nd5 Qd6 13.Nc7 Ke7 14.Na8 Nd7+-) 11...Nd4 12.Bd4 (better 12.Nf6 Qf6 13.Bd4+-) 12...a6 (12...Rf8 13.Bf6 Rf6+-) 13.Bf6 Qf6 14.Nf6 Ke7 15.Nd5 Kd8 16.Qc7 Ke8 17.Qe7 1-0. GuestRNVJ – GuestYKYG, freechess.org, 2019.

5.e3 Ne7 6.Bd3 (6.ed4 e4 7.Nh4 Qd6+/-) 6...Nd5? (better 6...Bf5!? 7.Be2 c5+=) 7.ed4+- ed4 8.0-0 c5 9.bc6! bc6? (9...bc6 10.Nd4 Decoy; 9...Nc6 10.Nd4 Decoy) 10.Nd4+- c5 (10...Be7 11.Re1 Qb6 12.Nb3+-) 11.Qh5 (better 11.Be4 Nb6 12.Nb3+-) 11...g6 12.Bg6! hg6 13.Qg6 (13.Qh8 cd4 14.Qg8 Bf5 15.Re1 Ne7+/-) 13...Kd7 14.Qf7 Kd6 15.Nb5 Kc6 16.c4 Nb6?? (16...Nf4 17.Re1 Bh6 18.Na7 Ra7 19.Qa7 Qd3 20.Qb8 Nh3 21.Kh1 Nf2 22.Kg1 Nh3 23.Kh1 Nf2 24.Kg1 Nh3 25.Kh1 Nf2=) 17.Bf6+- Qd6 (17...Qd7 18.Qd7 N8d7 (18...Kd7?? 19.Bh8 Nc4 20.Rc1+-) 19.Bh8 Nc4+-) 18.Nd6 Bd6 19.Bh8 N8d7 20.Qf3 (20.Na3!? Ba6 21.Bg7 Rd8+-) 20...Kc7 21.Na3 (better 21.Bg7 Ne5 22.Be5 Be5+-) 21...Bb7 22.Nb5 Kc8 23.Nd6 Kc7 (23...Kd8 24.Qb7 Nc4 25.Nf7 Ke7 26.Rfe1 Kf7 27.Qd7 Kg6 28.Qg4 Kh6 29.Re6 Kh7 30.Qg7) 24.Nb5 Kd8 (24...Kc8 25.Qf4 Nd5 26.cd5 Ne5 27.Qe5 Kd7 28.Rfe1 Rh8 29.Qc7) 25.Bf6 Kc8 (25...Nf6 26.Qf6 Kd7 27.Qf7 Kd8 28.Qc7 Ke8 29.Nd6 Kf8 30.Qf7) 26.Qg3 Nf6 (26...Ne5 27.Qe5 Kd7 28.Qd6 Ke8 29.Qe7) 1-0. DEFFM – GuestSXMW, freechess.org, 2019.

5.e4 Bd7?? 6.Bc4 Bc5? (6...Nh6 7.c3 a6 8.ba6 b5+/-) 7.Ne5! h5 (7...fe5 8.Qh5 Double attack (8.Qh5 Decoy)) 8.Bf7 Kf8 9.Ng6 (9.Nd7?! Nd7 10.Bh5 f5+/-) 9...Kf7 10.Nh8 Ke6 (10...Ke7 11.Qh5 Qe8 12.Qc5 Kd8 13.0-0+-) 11.Qh5 Bb6 (11...c6 12.Qc5 Nh6+-) 12.Qd5 Ke7 13.Ng6 (13.Ng6 Ke8 14.Qg8) 1-0. GuestBZPP – GuestVVKS, freechess.org, 2019.

5.e4 Be6 6.Bd3 Nd7 7.0-0 Nc5 (7...Nc5 8.Ne1 Qd7+=). xadrez – Klaus Behrmann, ChessWorld.net, 2003.

5.e4 Be6 6.Ne5 fe5-/+ 7.Qh5 g6 8.Qe5 Qf6 9.Qc7 Nd7 (9...Qg7 10.Qg7 Bg7 11.Na3-/+) 10.Qb7= Rb8 11.Qa7 Bc5 12.Qc7 Ne7 (12...Nh6 13.Bd3=) 13.Bd3 0-0 14.0-0 Rfc8 (14...h5!?=) 15.Qg3+= Ne5 16.a4 Bd6? (16...h5!? 17.h4 Kg7+=) 17.Bd4+/- Rf8 (better 17...Nf3 18.Qf3 Qd4+-) 18.Kh1+- h5 (18...Qf4 19.Qf4 Rf4 20.Nc3+-) 19.f4 h4 (19...Qf7 20.Be2 (20.fe5?! Qf1 21.Bg1 Bc5 22.Bf1 Rf1+/-; 20.Be5?! Be5 21.Nc3 Bf4+-) 20...Rbd8 21.Qg5+- (21.fe5?! Qf1 22.Bf1 Rf1 23.Bg1 Bc5=+; 21.Be5 Be5 22.Ra3 Bf4+-)) 20.Qe3 (20.fe5?? Qf1 (20...hg3?? 21.Rf6 Rf6 22.ef6+-) 21.Bf1 A) 21...hg3 22.Nc3 (22.ed6 Rf1 23.Bg1 Nc8-+) 22...Bc7 23.Bc5+/-; B) 21...Rf1 22.Bg1 Bc5-+; 20.Be5? Be5 (20...hg3 21.Bf6 Rf6 22.e5+-) 21.Qe3 Ba1-+) 20...Ng4 (20...Qf7 21.Be5 Be5 22.fe5 Qf1 23.Bf1 Rf1 24.Qg1 Rg1 25.Kg1 Kf7+-) 21.Bf6 Ne3 22.de3 Rf6 23.e5 Be5 24.fe5 Rf1 25.Bf1 Rf8 (25...Nd5 26.Ra3 Nb4 27.Rc3+-) 26.Bd3 Kg7 (26...Nd5 27.a5 Ne3 28.Nc3+-) 27.a5 Nd5 (27...Ra8 28.a6 Nc8 29.Nd2+-) 28.a6 Nb4 (28...Ne3 29.Nc3 h3 30.a7+-) 29.Nc3 Nd3 (29...Bc8 30.a7 Bb7 31.Be4+-) 30.cd3 Ra8 (30...Bc8 31.Ne4 g5 32.a7+-) 31.b6 Bc8 32.a7 Bb7 33.Nb5 1-0. DEFFM – GuestDFHM, freechess.org, 2019.

5.e4 Ne7 6.Bc4+= Ng6 7.0-0 Bc5 8.a4 Qe7 (8...Nf4 9.Nh4+=) 9.c3+/- Bg4 (9...Nd7 10.a5+/-) 10.a5 (10.h3 Bf3 11.Qf3 Nd7+/-) 10...Nd7 (10...Nf4 11.h3 Bh5 12.Kh2+=) 11.a6 (better 11.h3!? Be6 12.Be6 Qe6 13.cd4 ed4 14.Bd4+/-) 11...ba6= 12.Ra6 (12.cd4!? ed4 13.Ra6=) 12...Nb6=+ 13.Qb3 (13.Bb3 Nh4 14.cd4 ed4-/+) 13...Bf3 14.gf3 Nc4 (14...Nf4 15.cd4 Nc4 16.Qc4-/+) 15.Qc4+= dc3?? (better 15...Bb6 16.Qc6 Kf7 17.Qc4 Qe6 18.Qe6 Ke6 19.cd4 Nf4=) 16.Re6+- cb2 17.Re7 Be7 (17...Ne7 18.Qc5 Kf7+-) 18.Qc6 Kf7 19.Qd5 (19.Qd5 Kf8 20.Qa8 Kf7 21.Qa7+-) 1-0. DEFFM – Hrekall, freechess.org, 2019.

5.e4 Bg4 6.Bc4 Bc5 7.0-0 Ne7 8.c3 Ng6 (8...Nd7 9.h3 Bh5 10.a4+/-) 9.h3 Bf3 10.Qf3 (10.gf3 Nf4 11.Re1 f5-+) 10...Nd7 (10...Nf4+/-) 11.Qg4 (11.a4 Nf4 12.a5 Nf8+-) 11...Qe7 (11...Nb6!? 12.Be6 dc3 13.dc3 Nf4 14.Qg7 Rf8+=) 12.a4+/- 0-0-0 13.a5 Nf4? (better 13...Kb8!?+/-) 14.cd4+- Bd4? (14...h5 15.Qf3 Bb4+-) 15.Bd4 h5 (15...f5 16.Qg3 (16.ef5?! Nf6 17.Qf3 Rd4+-; 16.Qf5?! Rhf8 17.Qh7 ed4=) 16...Nh5 17.Qf3 ed4 18.Qh5 fe4 19.a6+-) 16.Qg3 (16.Qf3 ed4 17.Qf4 g5+-) 16...ed4 (16...Qb4 17.Qc3 Qc3 18.Bc3+- (18.dc3?! ed4 19.cd4 Nb8+/-; 18.Nc3?! ed4 19.Nd5 Nd5 20.Bd5 Nc5+=)) 17.Qf4 g5 18.Qf5 Kb8 (18...Qe5 19.b6! cb6 20.ab6+-) 19.a6 (19.Bd5 Qe5+-) 19...b6 (19...Qc5 20.Qc5 Nc5 21.f3+-) 20.Na3 Nc5 (20...Qe5 21.Qe5 fe5 22.Nc2+-) 21.Bd5 (better 21.Rfe1 Qe5 22.Nc2 Qf5 23.ef5 Rd6+-) 21...g4 (21...Nd3 22.Nc2 Qc5 23.Ra2+-) 22.Nc2 gh3 (22...Qe5 23.hg4 hg4 24.Qe5 fe5 25.Nb4+-) 23.Nd4 Rd6 24.Qh3 Qe4 1-0. DEFFM – GuestDFHM, freechess.org, 2019.

5.e3 a6

6.a4 Bb4 7.ed4 ab5 (7...e4 8.Nh4 Kf8 9.Qh5+/-) 8.ab5 (better 8.de5!? ba4 9.c3+-) 8...Ra1+/- 9.Ba1 Bg4? (better 9...e4 10.Nh4 Ne7+/-) 10.h3+- Bf3 11.Qf3 (11.gf3?! ed4 12.Bc4 Kf8+/-) 11...ed4 12.Bc4 Ne7 13.0-0 (13.Qb7 Bc5+-) 13...Nd7 (13...c6 14.Re1 Kf8 15.Ba2+-) 14.Bd4 Ne5 (14...c5 15.bc6! Nc6 16.Re1 Be7+-) 15.Be5 fe5 (15...c6 16.Bb2 Nd5 17.Re1 Kf7 18.Nc3 Bc3 19.Bc3+-) 16.Qf7 (better 16.Bf7 Kd7 17.Qg4 Nf5 18.Qf5 Ke7+-) 16...Kd7 17.Qe6 (worse 17.Qg7 Kc8+-) 17...Ke8 18.Qe5 (better 18.c3 Ba5 19.Qe5+-) 18...Bd2 (18...Rf8 19.Qg7 Qd6+-) 19.Qg7 (better 19.Rd1 Qd6 20.Qg7+-) 19...Rg8 (19...Rf8 20.Rd1 Nf5 21.Qh7 Qe7 22.Qg6 Kd8 23.Nd2 Kc8 24.Be6 Kb8 25.Bf5 Qc5+-) 20.Bg8 Nf5 21.Qf7 1-0. GuestLBCN – GuestDKCV, freechess.org, 2020.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Bc5? 9.Bc4 (9.Nd4 Bb6 10.Nf3 Be6+-) 9...Bg4 10.ed4 Bd4 11.c3 (11.Nc3 Nd7+/-) 11...Bb6 12.0-0 Ne7 13.Qe2 (13.Re1 c6+/-) 13...Nd7 14.d4 Ng6 (better 14...c6!?+=) 15.Qe4+- Bf3 (15...Nf4 16.Re1 Be6 17.Nbd2+-) 16.Qf3 (16.gf3?! f5 17.Qb7 Nf4+/-) 16...Qa8 17.Nd2 Qa4 (17...ed4 18.cd4 Ba5 19.Ne4+-) 18.Qb7 Qc2 (18...ed4 19.Bb2 dc3 20.Bc3+-) 19.Nb3 e4 (19...Rf8+-) 20.Qa8 Ke7 21.Qa3 Ke8 (21...Kd8 22.Rc1 Qc1 23.Nc1+-) 22.Rc1 (22.Rc1 Qc1 23.Nc1+-) 1-0. DEFFM – GuestSYGR, freechess.org, 2019.

6.a4 ab5 7.ab5 Ra1 8.Ba1 de3 9.Bc4 e4=+.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Bg4 9.h3+= Bh5 10.g4 Bg6 (10...Bf7 11.ed4 e4 12.Qe2+/-) 11.ed4+/- ed4 12.Bd4 Nd7 13.Bc4 Bc5 14.0-0 Ne7 15.Re1 Bf7 (15...Bd4 16.Nd4 Nc5 17.Nf5 Bf5 18.gf5+-) 16.Bc5+- Nc5 17.Qe2 Bc4 18.Qc4 Qd5?? (better 18...Qd6+-) 19.Qd5 (19.Qd5 Na4 20.Qe6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.ed4 ed4 7.Nd4 ab5 8.Bb5 c6 9.Bc4 b5 (9...Qb6 10.Qe2 Ne7 11.Bc3+-) 10.Bb3 Qe7 11.Ne2 (11.Kf1 Qe5 12.Qc1 Qd6+-) 11...Be6 (11...c5 12.a4 ba4 13.Ra4 Ra4 14.Ba4 Bd7 15.Bd7 Qd7 16.0-0+-) 12.0-0 Bb3 13.cb3 (13.ab3 Ra1 14.Ba1 Kf7+-) 13...Kd8 (13...Nh6 14.Nd4 Kf7 15.Re1+-) 14.Nd4 (14.Re1 Qd7 15.Nbc3 Na6+-) 14...Qd6 (14...Qd7 15.Re1 Bd6 16.Ne6 Kc8 17.Nc3+-) 15.Re1 Nd7 16.Re6 Qc5 (16...Qd5 17.Nc6 Kc7+-) 17.Qe2 Kc7 (17...Ne7 18.Re7! Be7 19.Ne6 Kc8 20.Nc5 Bc5+-) 18.Rc6 Qc6 19.Nc6 Kc6 (19...Ne7 20.Ne7 Be7 21.Nc3+-) 20.Qf3 Kd6 21.Qa8 Nh6 22.Nc3 Nb6 23.Nb5 Kc5 (23...Ke6 24.Qe8 Kf5 25.Nd4 Kg4 26.h3 Kg5 27.f4 Kh4 28.Nf3 Kg3 29.Qe1 Kf4 30.Qe3 Kg3 31.Be5 fe5 32.Qe5) 24.Bd4 Kb5 (24...Kb4 25.Qc6 Nd5 26.Nd6 Bd6 27.Qa4) 25.a4 Na4 (25...Kb4 26.Qc6 Kb3 27.Qc3) 26.Qa4 1-0. DEFFM – GuestZFXP, freechess.org, 2019.

5.e3 c5

6.Bc4 b6 7.Ne5! fe5 8.Qh5 Kd7 9.Bd5 (better 9.Qf3!? Nf6 10.Qa8 Qc7+-) 9...Nf6 10.Qf7 Qe7 11.Qe7 Be7 12.Ba8 a6 (12...Kc7 13.Bf3+-) 13.a4 ab5 (13...Kc7 14.Bf3+-) 14.ab5 Kc7 (14...Kd6 15.f4 ef4 16.ed4+-) 15.Ra7 Kd8 16.Na3 (16.0-0 Re8+-) 16...Rf8 (16...Be6 17.d3+-) 17.Nc4 Ng4 (17...Nbd7 18.0-0+-) 18.Nb6 Nf2 (18...Bf5+-) 19.Nd5 (better 19.Rf1 de3 20.de3+-) 19...Nh1 20.Ne7 Bd7 (20...Bg4 21.Nd5 Rf2 22.Rg7 Re2 23.Kf1 Rf2 24.Kg1 Rd2 25.Rg8 Kd7 26.h3 Rc2 27.Rb8 (27.Rg4?! Rb2 28.Kh1 Rb5+-; 27.Kh1?! Be6 28.Rb8 Bd5 29.Bd5 Rb2 30.Bc6 Kd6+-) 27...Rb2 28.hg4 Rb1 29.Kh2+-) 21.Nc6 Bc6 (21...Nc6 22.bc6 Be6 23.Rg7 Rf7 24.Rf7 Bf7 25.ed4 ed4+-) 22.bc6 Nc6 (22...Rf6 23.c7 Kc8 24.cb8Q Kb8 25.Ra5+-) 23.Bc6 de3 (23...Rf6 24.Bf3 Rh6 25.Rg7 Rh2+-) 24.Bc3 ed2 (24...Rf7 25.Rf7 ed2 26.Kd2 Kc8 27.Ba5 Kb8 28.Bb6 Nf2 29.Rf8) 25.Bd2 Rf5 (25...Rf7 26.Ba5 Rc7 27.Rc7 h6 28.Rg7 Kc8 29.Rg8) 26.Ba5 Kc8 27.Ra8 1-0. GuestLBCN – druet, freechess.org, 2020.

6.Bc4 Bd6 7.0-0 Bd7 8.ed4+- cd4 9.c3 dc3 (9...Ne7 10.Re1 d3+-) 10.Nc3 a6 (10...Bf5 11.Nh4 Ne7 12.Nf5 Nf5 13.Rc1+-) 11.d4 ed4 (11...e4 12.Ne4 Be7 13.Ne5+-) 12.Qd4 Bb5 13.Nb5 ab5 14.Bb5 Nc6 15.Rfd1 Be7 (15...Bh2 16.Kh2 Qd4 17.Rd4 Nge7+-) 16.Qg4 Qb6 17.Bc6 Qc6 (17...Kf8 18.Bd5 Qb2+-) 18.Qg7 Qc2 (18...Qc4 19.Qh8 Qf7 20.Rac1+-) 19.Qh8 Kf7 (19...Kf8 20.Ng5! Qf5 21.Nh7 Kf7 22.h4+-) 20.Ng5! fg5 21.Qg7 Ke6 22.Re1 Kf5 23.Qh7 (23.Qh7 Kf4 24.Be5 Kg4 25.h3) 1-0. GuestJVKF – GuestZNLX, freechess.org, 2020.

6.Bc4 Bd6 7.0-0 Ne7 8.Nh4 (8.ed4 cd4 9.c3 Nd7+/-) 8...Bd7 (8...Kf8!?+/-) 9.Qh5 (9.Qh5 g6 10.Qf3+-) 1-0. GuestPCMQ – GuestFPXD, freechess.org, 2020.

6.Bc4 Bd6 7.Nh4 Ne7 (7...Kf8 8.0-0 Nh6 9.Na3+=) 8.Qh5 (8.0-0 Nd7 9.Na3 Nb6+=) 8...g6 9.Qh6 (9.Qf3 Nd7 10.Na3+=) 9...Bg4 (9...Kd7!?+=) 10.Qg7 (10.f3 Bc8 11.Qg7 Kd7 12.Qf6 Qf8 13.Qf8 Rf8+/-) 10...Rf8 (10...Kd7 11.Qf6 Kc7 12.Qg5+/- (worse 12.ed4 ed4 13.Na3 Nd7 14.b6 Nb6=+)) 11.0-0 (11.h3 Bc8 12.Qh7 g5 13.Qh5 Kd7+/-) 11...g5? (better 11...Nd7!? 12.Qh7 g5+=) 12.f4+- gh4 (12...ef4 13.ef4 Qc7 14.h3+/-) 13.Qg4 Ng6 (13...Qc7 14.Qh4 ef4 15.Qh5 Kd8 16.Na3+-) 14.Qe6 (14.f5 Ne7 15.Na3 Qc7+-) 14...Qe7? (14...Ne7+-) 15.Qc8 Qd8 16.Qb7 Nd7 17.Qc6 (17.f5 Ne7 18.Qf3 Qb8+-) 17...Be7 18.f5 (18.Na3 f5+-) 18...Nh8 19.Be6 Rc8 20.Qa6 (20.Qf3 Qa5 21.a4 Nf7+-) 20...Qc7 (20...Rb8 21.Na3 Qb6 22.Qa4+-) 21.Na3 Kd8 (21...Nf7 22.Nc4+-) 22.Nc4 (22.c3 Nf7 23.cd4 ed4+-) 22...Rb8 (22...Nf7 23.c3 Ng5 24.cd4 cd4 25.b6 ab6 26.Bd7 Qc4 27.Bc8 (27.Qc8?! Qc8 28.Bc8 Kc8+-) 27...Qc8 28.Qb6 Qc7 29.Qb3+-) 23.a4 (better 23.c3 Nf7 24.Rac1 d3+-) 23...Nb6 (23...Nf7+-) 24.Na5 Na8 (24...Ke8 25.Nc6 Nd7 26.Bd7 Kd7 27.Nb8 Qb8 28.Qc6 Kd8+-) 25.Nc6 (25.Nc6 Ke8 26.Nb8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.Bc4 Nd7 7.0-0 Nb6 8.Qe2 (8.Bg8 Rg8 9.Qe2 Be7=) 8...Nc4=+ 9.Qc4 Bd6 (9...Bg4 10.Re1 Be7 11.ed4 cd4 12.Ne5 fe5 13.Re5=) 10.ed4 cd4 11.Re1 Qe7 (11...Be7!?=) 12.Nd4!+– Nh6 (12...ed4 Exploits the pin 13.Re7) 13.Qd5 Nf5 14.Nf5 Bf5 15.d4 Be6 (15...Rd8 16.Qb3+= (16.de5 Bb4 17.Nc3 Rd5 18.ef6 Qe1 19.Re1 Kf7 20.fg7 Rc8 21.Nd5 Be1–/+)) 16.Qf3+– 0-0 17.d5 Bd7 18.a4 f5 Black plans e4 (18...a6 19.Nc3+=) 19.Qb3 Qh4 20.Ba3 (20.Re5?! Be5 21.Be5 Rae8 22.d6 Rf7=) 20...Ba3 (20...Qh6 21.c4 Rac8 22.Bd6 Qd6 23.Nd2+–) 21.d6 (21.Na3 e4+–) 21...Kh8+– 22.Na3 e4 23.Qd5 Rab8 24.Rad1 Qf6 25.Qc5 (25.Qd4 a6+–) 25...b6 (25...a6 26.Qd4+–) 26.Qc7+– Qf7 27.Qa7 h5? (better 27...Ra8 28.Qb6 Ra4+–) 28.a5 ba5 29.Qa5 Qa2 (29...h4 30.c4 Qg6 31.Qa7+–) 30.Qb4 Qf7 31.c4 Rfc8 32.c5 White prepares the advance b6 32...Qe8 33.b6 (33.Rb1 Qe5 34.Rec1 f4+–) 33...Qe5 (33...h4 34.f3 Qh5 35.fe4 fe4 36.Rc1+–) 34.Rc1 Bc6 35.Nc4 Qd5 36.Na5 e3 (36...Qf7 37.Qd2+–) 37.Nc6 Qc6 (37...ef2 38.Kf2 Rc6 39.Rcd1 Qc5 40.Qc5 Rc5 41.d7 Rc2 42.Kg3+–) 38.fe3 Rb7 (38...Rf8 39.Qh4 g6 40.Qd4 Kh7 41.e4+–) 39.Qf4 Qe4 (39...Rf7+–) 40.c6! Rb6 (40...Qc6 41.Rc6) 41.Qe4 fe4 42.d7 Rf8 43.c7 (43.c7 Kh7 44.d8Q+–) 1–0. DEFFM – GuestPQWW, freechess.org, 2020.

6.Bc4 Nh6 7.Ne5 fe5 8.Qh5 g6?? (better 8...Kd7 9.Qe5 Qe8 10.Qe8 Ke8 11.ed4 cd4 12.Bd4 Nf5=) 9.Qe5+- Qe7 10.Qh8 Be6 (10...Qe4 11.Na3 (11.Qh7?! Qc2 12.Ba3 Qc4+/-) 11...Qg2 12.0-0-0+-) 11.Be6 Qe6 12.Qh7 Qf7 (12...Nd7 13.0-0+-) 13.Qf7 Nf7 14.ed4 c4 (14...Bg7 15.Nc3 Bd4 16.0-0-0+-) 15.0-0 Nd6 16.Re1 Kd7 17.a4 Kc7 (17...a6 18.Nc3+-) 18.Nc3 Kd7 19.Nd5 Nf5 (19...Nc8 20.Nf6 Kc7 21.Re6+-) 20.Nf6 Kd6 (20...Kc7 21.Re6+-) 21.Ba3 Kc7 22.Bf8 Nd4 23.Re7 Kb6 24.a5 Kb5 25.Re5 Ka6 26.Nd5 Nc2 27.Nc7 1-0. DEFFM – GuestLXWP, freechess.org, 2021.

6.Bd3!?=.

6.ed4 ed4 7.Bc4+= Qe7 8.Qe2 Qe2 9.Be2 Be6 10.0-0 Bd6 11.d3. GuestMXJR – GuestTYWX, freechess.org, 2017.

6.Ne5 fe5–/+ 7.Qh5 Kd7 8.Qe5 Qe7 (8...de3!? 9.de3 Nf6+=) 9.ed4= cd4 10.Bd4 Qe5 11.Be5 Nf6 12.Bc4 Bd6 13.Bf6 (13.d4 Re8 14.f4 Kd8+=) 13...Re8 14.Kd1 gf6 15.d4 a6 16.Nc3 Kd8 17.h3 Be6 18.Bd3 (18.Be6 Re6 19.Rb1 ab5 20.Rb5 Re7+=) 18...h6 19.Ne4 Be7 20.Nd2 (20.Re1 f5 21.Nd2 Bf6+=) 20...ab5 21.Bb5 Bd7 (21...Rg8 22.g4–/+) 22.Bc4 (22.Bd7 Nd7 23.c4 Bb4–/+) 22...b5 23.Bb3 (23.Bf7 Rf8 24.Bd5 Bc6 25.Bc6 Nc6–/+) 23...Bb4 24.Nb1 Nc6 (24...Bd6 25.Re1–/+) 25.c3 Ba5 26.a3 Bf5 27.d5 (27.a4!? ba4 28.Ba4–/+) 27...Ne5–+ 28.Bc2 Nd3 29.Rf1 Re5 30.g4 Nb2 31.Kc1 Bc2 32.Kc2 Re2 33.Nd2 Na4 (33...Rc8 34.Rae1 Rc3 35.Kb2 Rd2 36.Kb1 Rb3 37.Kc1 Ra3 38.Re8 Ke8 39.Re1 Kd8 40.Kb1 Bc3 41.Re8 Ke8 42.g5 Ra1) 34.Kd3 (34.Rae1 Nc3 35.Re2 Ne2–+) 34...Rd2! (34...Nc3?! 35.Nb1 Rb2 36.Nc3–/+) 35.Kd2 Decoy theme: d2 35...Bc3 Theme: Double Attack 36.Kc2 Ba1 37.Ra1 Nb6 38.Kb3 Ke7 (38...Ra4 39.Rd1–+) 39.Re1 (39.Kb4 Nd5 40.Kb5 Nf4–/+) 39...Kf7 (39...Kd7!? 40.Rd1 Kd6 41.f4–+) 40.d6–/+ Rd8 (40...Nc4!? 41.d7 Nb6–/+) 41.Kb4+= Rd6 42.Kb5 Nd7 43.Re3 Kg6 (43...Ne5 44.Re4–/+) 44.a4+= Rb6 45.Ka5 Rb2 46.f4 f5 47.Re6 (47.g5!? hg5 48.Rg3+=) 47...Nf6–+ 48.Rb6 (48.Rd6 Rf2 49.Rd4 fg4 50.hg4 Ng4–+) 48...Rh2 (48...Rb6 49.gf5 Kf5 50.Kb6 Kf4 51.a5 Nd7 52.Kb5–+) 49.Kb5 (better is 49.Rb5 fg4 50.hg4 Ng4 51.Kb6–+) 49...Rh3 50.gf5 Kf5 51.a5 Ra3 (51...h5!? 52.Kc6–+) 52.a6 Ng4 53.Kc6 h5 (53...Kf4 54.Kb7–+) 54.Kb7 (54.Rb5 Kf4 55.Rh5 Ra6 56.Kb5 Ra1–/+) 54...h4 55.a7 h3 (better is 55...Ra7! 56.Ka7 Kf4–/+) 56.Rb5= Kf4 57.Rh5 ½–½. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

6.Ne5 fe5–/+ 7.Qh5 Kd7 8.Qe5 Qe7 (8...de3 9.de3 Nf6 10.Nc3–/+) 9.ed4= cd4 10.Bd4 Qe5 11.Be5 Nf6 12.Bc4 Bd6 13.Bf6 (13.d4 Re8 14.Bf7 Re7–+ (14...Re5?! 15.de5 Be5 16.c3+=)) 13...Re8–/+ 14.Kd1 gf6 15.d4 a6 16.Nc3 Kd8 17.h3 Be6 18.Bd3 (18.Be6 Re6 19.Rb1 ab5 20.Rb5 Ra7+=) 18...h6 (18...f5 19.d5 Bd7 20.b6+=) 19.Ne4 Be7 20.Nd2 (20.g4 ab5 21.Bb5 Nd7+=) 20...ab5 21.Bb5 Bd7 (21...Nc6 22.c4 Bd6 23.Ne4 Bg4 24.hg4 Re4 25.d5=) 22.Bc4 (22.Bd7 Nd7 23.c4 Bd6=) 22...b5 23.Bb3 (23.Bf7 Rf8 24.Bd5 Bc6 25.Bc6 Nc6+=) 23...Bb4 (23...Bc6 24.Bf7 Rf8 25.Be6 Bg2 26.Rg1–/+) 24.Nb1 (24.Bf7 Re7 25.Bd5 Bc6–+) 24...Nc6 25.c3 Ba5 (25...Bd6 26.a4–/+) 26.a3 (26.a4 b4 27.cb4 Bb4–+ (27...Nd4 28.Bd5+/–)) 26...Bf5 27.d5 (27.a4 ba4 28.Ba4 Bc7–+) 27...Ne5–+ 28.Bc2 Nd3 29.Rf1 Re5 (29...Nb2!? 30.Kc1 Bc2 31.Kc2 Re2 32.Kc1–+) 30.g4–/+ Nb2 31.Kc1 Bc2 32.Kc2 Re2 33.Nd2 (33.Kc1–+) 33...Nc4 (better is 33...Rc8!? 34.Rfe1 Rc3 35.Kb2 Rd2 36.Kb1 Rd5–+) 34.Rad1–/+ Na3 (34...Rc8 35.Kd3 Re5 36.Nc4 Rc4 37.d6 Rc3 38.Kd2 Ra3 39.Kc2 Re2 40.Rd2 Rd2 41.Kb1 Bc3 42.Rd1 Ra1) 35.Kd3 (35.Kb3!?–/+) 35...Re5–+ 36.c4 (36.Rfe1 Rd5 37.Ke4 Re5 38.Kd3–+) 36...Bd2 37.Rd2 (37.Kd2 Nc4 38.Kc2–+) 37...Nc4 (37...bc4?! 38.Kc3–+) 38.Rc2 Rd5 39.Ke4 Rd2 (39...Re5 40.Kd3–+) 40.Rc3 (40.Rfc1 Rc8 41.Kf4 Rc2 42.Rc2 Kd7–+) 40...Ke7 (40...Kd7 41.Rb1–+) 41.f4 Ra3 (41...Ra4 42.Rfc1–+) 42.Rff3 (42.Ra3 Na3 43.h4–+) 42...Nd6 (42...Nd6 43.Ke3 Rc3 44.Kd2 Rf3–+) 0–1. Sternik,Ryszard – Roczniak,Jan, corr Poland, 1991.

6.Ne5 fe5 7.Qh5 Kd7 8.Qe5 Nf6 9.Bc4 Bd6 10.Qe6 Kc7 11.Qf7 Nbd7 12.ed4 Re8 13.Be2 cd4 14.Qc4 Kb8 15.Bd4 Nb6 16.Bb6 ab6 17.0-0 Be5 18.Nc3 Be6 19.Qh4 Qd2 20.Rfd1 Qc3 21.Bd3 Ra2 22.Ra2 Ba2 23.h3 Bb1 24.Bh7 Bc2 25.Bc2 Qc2 26.Rf1 Bc7 27.Qg5 Qc3 28.Qg7 Re1 29.g3 Rf1 30.Kf1 Qc1 31.Kg2 Ne4 32.Qf8 Ka7 33.Qe7 Qe1 34.Qa3 Kb8 35.Qf8 Ka7 36.Qa3 Qa5 37.Qe7 Qb5 38.Qe4 Qc6 39.Qc6 bc6 40.h4 b5 41.g4 b4 42.h5 b3 43.h6 b2 44.h7 b1Q 45.h8Q Qe4 46.Kf1 Qd3 47.Kg2 Qd5 48.Kf1 Qd1 49.Kg2 Qg4 50.Kf1 Qc4 51.Kg2 Qg4 52.Kf1 Qd1 53.Kg2 Qh1 0–1. Abdullaevich – SSVD, lichess.org, 2018.

6.ed4 cd4

7.Bc4 a6 8.c3 ab5 9.Bb5 Bd7 10.Bd7 Nd7 11.cd4+/-.

7.Bc4 Qb6 8.c3 Be6 9.Be6 Qe6 10.cd4 ed4 11.Qe2 Qe2 12.Ke2 Nd7+/-.

7.Bc4 Qb6 8.Nh4 a6 9.Qh5+/- g6? (better 9...Kd8!? 10.Ng6! ab5+/-) 10.Ng6!+- hg6 11.Qh8 Ne7 (11...Be6 12.Bd3+-) 12.a4 (better 12.Na3 Bd7 13.Qh7 Kd8+-) 12...Bd7 (12...ab5 13.ab5 Ra1 14.Ba1+-) 13.Na3 ab5 (13...Bf5 14.Bb3 Nd7 15.Nc4+-) 14.ab5 Nf5 (14...Bf5 15.0-0 Nd7 16.Bb3+-) 15.0-0 Qc7 (15...Qd6+-) 16.Qf6 Ra3 (16...Bc8 17.Rfe1 Bg7 18.Qg6 Kd8+-) 17.Bf7 1-0. DEFFM – AJEDREZZZZ, freechess.org, 2019.

7.Bc4 Qb6 8.Nh4 Be6 9.Be6 Qe6 10.Qh5 (10.Qe2 Bc5+=) 10...Qf7= 11.Qg4 (better 11.Qf3 a6 12.0-0=) 11...Bc5?? (better 11...Nd7=+) 12.Qc8 Ke7 13.Nf5 1–0. onur604 (2320) – mata251 (1970), lichess.org, 2020.

7.Bc4 Qb6 8.Nh4 Nh6!?+=.

7.Bc4 Qc7 8.Qe2 Ne7 9.d3=.

7.Bc4 Bd7 8.0-0+- Qb6 9.Qe2 Bc5 (better 9...Ne7+-) 10.Ne5?? (10.c3 d3 11.Qd3 a6+-) 10...Ne7?? (better 10...fe5 11.Qe5 Kd8+=) 11.Nd3+- a6 (11...Bd6 12.Re1 a6 13.Qh5 Kd8+-) 12.Qh5 Kd8 13.Nc5 (13.Nc5 Be8 14.Qg4 Qc5 15.Bd4+-) 1-0. DEFFM – GuestJHYD, freechess.org, 2019.

7.Bc4 Nd7!?+/-.

7.Bc4 Ne7 8.0-0 Qc7 9.d3 Bg4 10.c3 (10.h3!? Bh5 11.Re1+-) 10...e4+= 11.h3 Bf3 (11...Bh5 12.g4 ef3 13.gh5 Qf4=) 12.gf3+/- ef3 (12...e3 13.cd4 Nf5+=) 13.Qf3+- Ng6 (13...Nd7 14.cd4 0-0-0 15.Na3+-) 14.cd4 Bd6 (14...Nd7 15.Re1 Be7 16.Nc3+-) 15.Re1 Ne7 (15...Kd8 16.Nc3 Nh4 17.Qh5+-) 16.Qh5 (better 16.Nc3 Kd8+-) 16...g6 17.Qd5 Nd7 18.Qf7 Kd8 19.Nd2 (19.Nc3 Rf8 20.Qh7 Nb6+-) 19...Rf8 20.Qh7 Bh2 (20...Nb6 21.Ne4 Ned5+-) 21.Kh1 Qd6 (21...Bd6 22.Rac1 Rc8 23.Be6+-) 22.Re6 Qd4 1-0. DEFFM – andasjie, freechess.org, 2019.

7.Bc4 Bg4 8.0-0 (better is 8.Qe2=) 8...Ne7? (better is 8...Qc7 9.d3 Ne7=) 9.Ne5!+– fe5 (9...fe5 10.Qg4 Discovered attack) 10.Qg4 1–0. DEFFM – GuestSPGn, freechess.org, 2018.

7.Bc4 Nh6 8.0-0 Bg4 (8...a6 9.Re1 ab5 10.Bb5 Nc6 11.Nd4+/-) 9.c3 (9.h3 Bh5+-) 9...d3 10.Re1 Bc5 11.h3 Qb6 (11...Bh5 12.g4 Bf7 13.Ne5 fe5 14.Re5 Be7 15.Ba3+-) 12.Rf1 (better 12.hg4 Bf2 13.Kf1+/-) 12...Bh3?? (better 12...Bf5+/-) 13.gh3+- Nf5 14.Kg2 (better 14.Ne1 Nd6 15.Qg4 e4 16.Qg7 Rf8+-) 14...g5 (14...e4 15.Nd4! Nd4 16.cd4 Bd4 17.Nc3+-) 15.Bd3 Nh4 (15...Ne7 16.Qb3 h5 17.Na3+-) 16.Nh4 gh4 17.Qh5 Kd8 18.Qf7 (18.Qh4 Nd7 19.c4 Bd4+-) 18...a6 (18...Nd7 19.c4 Qd6 20.Be4+-) 19.a4 (19.Ba3 Ba3 20.Na3 ab5 21.Nb5 Ra6+-) 19...ab5 20.ab5 Ra5 (20...Ra1 21.Ba1 Rf8 22.Qh7 Nd7+-) 21.Ra5 Qa5 22.Qf6 Kc7 23.Qh8 Nd7 24.c4 Bb4 25.Qh7 Qa2 26.Be5 Bd6 27.b6! Kb6 28.Bd6 Qa6 (28...Qa4 29.Nc3 Qa5 30.Qd7 Qg5 31.Kh1 Qg2 32.Kg2 Ka7 33.Ra1 Kb6 34.c5) 29.c5 Ka5 30.Ba6 Ka6 (30...ba6 31.Qd7 Kb4 32.Qc6 Kb3 33.Qd5 Ka4 34.c6 a5 35.Nc3) 31.Nc3 Nc5 (31...Ka5 32.Qd7 b6 33.Qb5) 32.Bc5 b6 (32...Ka5 33.Ra1) 33.Ra1 1-0. GuestYZBW – milashov, freechess.org, 2019.

5.e3 Bc5

6.Bc4 a6 7.a4 (7.Nd4 Bd6 8.ba6 Na6+/-) 7...Bg4 8.ed4 e4? (better 8...Bd4 9.Bd4 ed4 10.Qe2 Kf8+=) 9.dc5+- ef3 10.0-0 (worse 10.gf3 Qe7 11.Qe2 Bf3 12.Qe7 Ne7+/-) 10...fg2?? (better 10...Ne7 11.Re1 Qd7+-) 11.Re1 (11.Qg4?! A) 11...gf1N? 12.Qg7 (12.Bf1?! Kf8+=) 12...Qd7 13.Bf6 (13.Qh8?! Qg4 14.Kf1 Qd1 15.Kg2 Qg4 16.Kh1 Qf3 17.Kg1 Qg4 18.Kh1 Qf3 19.Kg1 Qg4 20.Kh1=) 13...Nf6 14.Qh8 Ke7 15.Kf1+- (15.Bf1?! Qg4 16.Bg2 Qd1 17.Bf1 Qg4 18.Bg2 Qd1 19.Bf1 Qg4=); B) 11...gf1R 12.Bf1 Kf8+=) 11...Ne7 (11...Kf8 12.Qg4 c6 13.Qg2+-) 12.Qg4 g5 (12...Nd7+-) 13.Qh5 Kf8 (13...Kd7 14.Be6) 14.Qf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bc4 de3 7.fe3 Bg4 8.0-0 (8.Nc3 a6=) 8...Ne7 (8...e4!? 9.h3 Bh5+=) 9.h3 Bh5 10.d4 e4 11.g4 ef3? (better 11...Bg6+=) 12.gh5+- (12.dc5?! Qd1 13.Rd1 Bf7 14.Bf7 Kf7+=; worse 12.Qf3 Bf7 13.Bf7 Kf7 14.Qb7 Qd5 15.Qd5 Nd5+/-) 12...Bd6 13.Qf3 (13.Rf3?! Nd7+/-) 13...Nd7 14.e4 Nb6 15.Bb3 Qd7 (15...c5 16.bc6! Nc6 17.h6+-) 16.e5 (16.c4 c5 17.bc6 Nc6+-) 16...Bb4? (better 16...fe5 17.h6 gh6 18.Qf7 Kd8 19.Qf8 Rf8 20.Rf8 Qe8 21.Re8 Ke8 22.de5 Bc5 23.Kg2 Rd8+/-) 17.a3+- Ba5 18.h6 gh6 (18...Ng8+-) 19.Qf6 0-0-0 20.Be6 Rhg8 21.Kh1 (better 21.Kh2 Rgf8 22.Bd7 Nd7 23.Qe7 Rf1 24.Nc3 Rf2 25.Kh1 Rc2 26.Na4+-) 21...Ned5 (21...Rgf8 22.Bd7 Nd7 23.Qe7 Rf1 24.Kg2 Rdf8+-) 22.Bd7 Nd7 23.Qh6 Ne7 (23...Rde8 24.Qh7 Rg3 25.Rg1+-) 24.Rf7 Ng6 (24...Rde8 25.Qh4 Nd5 26.Qh7+-) 25.Qh7 Rh8 (25...Nb8 26.Rg7 Rg7 27.Qg7+-) 26.Qg6 Rh3 27.Kg2 Rhh8 28.Qf5 Rdg8 29.Kf3 Rh3 30.Qh3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bc4 Nh6 7.ed4+/- ed4 8.0-0 (8.Qe2 Qe7+/-) 8...Nf5 (8...Qd6 9.c3 d3 10.Qe1 Kd8 11.Qe4+/-) 9.Re1 Be7 (9...Kf8 10.Nh4! g6 11.Nf5 Bf5 12.Qf3+/-) 10.Nh4 Nh4 11.Qh5 Ng6 12.Ba3 c5 13.Bc5 b6?? (better 13...Kd7 14.Qd5 Kc7 15.Be7 Ne7 16.Qc5 Nbc6 17.bc6 Nc6+/-) 14.Be7+- Qd7 (14...Qe7 15.Re7 Ke7 16.Qd5+-) 15.Bf6 Kf8 16.Be7 Ne7 (16...Qe7 17.Re7 Ke7 18.Qg5 Ke8+-) 17.Qf7 1-0. DEFFM – GuestPZJL, freechess.org, 2021.

6.Bd3 de3+/- 7.fe3 Bg4 (7...Nd7!?+/-) 8.0-0+- Ne7 9.h3 (9.Nc3 Nd7 10.Bc4 Nb6 11.Bf7 Kf8+-) 9...Bh5 10.Be4 (10.Nc3 0-0+/-) 10...c6 11.d4 ed4 12.ed4 Bd6 13.Qd3 Nd7 (13...h6!? 14.Nc3 0-0+/-) 14.Nbd2 f5? (better 14...Qc7+-) 15.Bf5 Nf5 (15...cb5 16.Qb5 (16.Bh7?! Qb6+-) 16...Bf3 17.Rf3 (17.gf3?! a6 18.Qd3 Qc7+-) 17...Nf5 18.Rf5+- (worse 18.Qf5 Qe7+-)) 16.Qf5 Bg6 (16...Nf6 17.Rae1 Kf8 18.Ng5+-) 17.Qe6 Qe7 18.Rae1 Qe6 (18...Kd8 19.Qb3 Qf7 20.Nc4+-) 19.Re6 Kd8 20.Rd6 (20.Rd6 Kc7 21.Ba3 cb5 22.Ng5+-) 1-0. GuestPSSG – GuestPYBW, freechess.org, 2020.

6.Nd4! ed4 7.Qh5+- g6 (7...Kd7 8.Qc5 de3 9.de3+-) 8.Qc5 de3 9.Qe3 Kf7 (9...Qe7 10.Bc4 Bf5 11.Kd1 Qe3 12.de3+-) 10.Bc4 Kg7 11.0-0 Bf5 (11...Ne7 12.Re1 Nf5 13.Qf4+-) 12.d3 Nd7 (12...a6 13.a4+-) 13.Re1 Qf8 (13...Nb6 14.Bb3+-) 14.Qf3 h5 (14...Re8 15.Nd2 Re1 16.Re1+-) 15.Qb7 Rb8 (15...Qd8 16.Qd5 Nh6 17.Nd2+-) 16.Qc7 Ne7 (16...Qb4 17.Bc3 Qc5 18.Qc5 Nc5 19.Bd4+-) 17.Ba3 Re8 18.Qa7 Qf7 (18...Kh7 19.Be6 Ne5 20.Bf5 gf5+-) 19.Bf7 Kf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.Nd4! Bd4 7.ed4 Decoy.

6.Bc4 Ne7

7.0-0 Nd7 8.ed4 Bb6?? (better 8...Nb6 9.Bb3 ed4+-) 9.de5 fe5 (9...Ne5 10.Ne5 (worse 10.Be5 fe5 11.Ne5 Rf8+-) 10...fe5 11.Be5+-) 10.Re1 Ng6 (10...Rf8 11.d4+-) 11.Ne5 Nge5 (11...Bf2 12.Kf2 Qh4 13.Kg1 Nde5 14.Be5 Qc4+-) 12.Qh5 (12.Re5?! Ne5 13.Be5 Bf2 14.Kf2 Qh4 15.Kg1 Qc4 16.Bg7 Rg8 17.Qh5 Qf7 18.Qf7 Kf7=) 12...g6 13.Re5 Ne5 14.Qe5 Qe7 15.Qh8 Kd7 (15...Qf8 16.Qe5 Qe7 17.Qe7 Ke7+-) 16.Na3 Kd6 17.Bf6 Qf6 18.Qf6 Kc5 (18...Kd7 19.Be6 Kd6 20.Bc8 Kc5 21.c3 Kd5 22.d4 Rc8 23.Qe5) 19.Qe7 Kd4 20.Qe3 (20.c3) 1-0. DEFFM – GuestVYJF, freechess.org, 2019.

7.Nd4 ed4 8.Qh5 Ng6 9.Qc5 de3 10.Qe3 Qe7 11.Qe7 (11.Nc3 Qe3 12.de3 Ne7+–) 11...Ne7 12.0-0 Nd7 13.Re1 Kd8 14.a4 (14.Nc3 Nb6 15.Bd3 Ng6+–) 14...c6 (14...a6 15.ba6 ba6 16.Ba3+–) 15.a5 (15.Nc3 Nf5+–) 15...Nd5? (15...Nf5 16.d4+–) 16.bc6 (16.Bd5!? cd5 17.Nc3 d4+–) 16...bc6 17.Bd5 cd5 18.Nc3 Bb7 (18...Rb8 19.Ba3 Ne5 20.Nd5+–) 19.Nb5 Bc6? (19...a6 20.Nd4 Ne5+–) 20.Nd4 Bb7 (20...Kc7 21.Re6 Nb8 22.Re7 Nd7 23.Ne6 Kc8+–) 21.a6 Bc8 (21...Rb8 22.Ne6 Kc8 23.ab7 Rb7 24.Bd4+–) 22.Ne6 Ke7 23.Nc7 Kd6 24.Na8 (24.Na8 Ne5 25.f4+–) 1–0. onur604 (2320) – Iker6363663 (1970), lichess.org, 2020.

7.Nd4! Qd4 8.ed4.

7.Nd4! Bd4 8.ed4 ed4 9.0-0 (better 9.Qh5 g6 10.Qc5+–) 9...c5? (better 9...Qd7+–) 10.Qh5+– g6 11.Qc5 b6 12.Qa3 Bb7 (12...Bf5 13.Re1 Nd7 14.Bd4+–) 13.Re1 a6 (13...Nd7 14.Bd4 Rc8 15.Be6+–) 14.Bd4! ab5 (14...Qd4 Theme: Deflection from e7 15.Qe7 A double attack) 15.Bb5 Bc6 (15...Nbc6 16.Bb6! Qd7+–) 16.Qa8 Bb5 (16...0-0 17.Bc4 Kh8 18.Bb6 Qb6 19.Qa3+–) 17.Bf6 0-0 (17...Bc6 18.Qa3 (18.Bh8?! Ba8 19.Bc3 Kf7=; 18.Re7 Qe7 19.Qb8 Kf7 20.Be7 Rb8+–) 18...0-0 19.Be7+–) 18.Be7 Qd2 (18...Qe8+–) 1–0. DEFFM – GuestLMJM, freechess.org, 2020.

7.Nd4 h5 8.Nb3 Nd7+-.

5.e3 de3

6.de3 Qd1 7.Kd1 Nd7=.

6.de3 Qd1 7.Kd1 Bg4 8.Be2 Nd7 9.h3 Bh5 10.g4 Bg6 11.Bd3?? (11.Kc1 0-0-0+=) 11...Bf7?? (better is 11...e4 12.Be2 ef3 13.Bf3 0-0-0–+) 12.Nfd2 Bc5 13.c4 0-0-0 14.Nc3 Nb6 15.Bc2? (better is 15.Ke2+=) 15...Nc4–+ (15...Bc4?! 16.Kc1–/+) 16.Bc1 Bb4 17.Ncb1 Ne7 18.Ke2 Nd2 19.Nd2 (19.Bd2 Bc4 20.Ke1 Bd2 21.Nd2 Bb5 22.Ne4–+) 19...Bc3 20.Rb1 Ba2 21.Rd1 Bb1 22.Nb1 Rd1 23.Bd1 Bb4 24.Ba3 Ba3 25.Na3 Rd8 26.Bc2 g6 27.e4 Rd4 28.f3 Kd7 29.Bd3 Nc8 30.Nc2 Rd6 31.h4 Nb6 32.Ne3 Rd4 33.Nc2 Ra4 34.Ke3 Nc8 35.f4 Kd6 36.f5 (36.fe5 fe5 37.Ne1 a6–+) 36...Kc5 (better is 36...gf5 37.gf5 Kc5 38.Ne1–+) 37.fg6 hg6 38.h5 gh5 39.gh5 Ne7 (39...Nd6 40.h6–+) 40.Ne1 (40.h6 f5!–+) 40...Ng8 41.Nf3 Ra1 42.Be2 Rh1 43.Nd2 Ne7 44.Nf1 f5 0–1. cmulligan (2255) – zzvotra (2605), net–chess.com, 2011.

6.fe3 a6 7.Ne5 fe5= 8.Qh5 Ke7?? (8...Kd7!? 9.Qf5 Ke8 10.Qh5 Kd7 11.Qf5 Ke8 12.Qh5 Kd7=) 9.Qe5 (better 9.Ba3 Qd6 10.Qe5 Kd8 11.Bd6 cd6+-) 9...Be6?? (9...Kd7 10.Bd3 Qh4 11.g3 Qe7 12.Qd4 Qd6=) 10.Bc4+- Qd6 (10...Qd7 11.0-0 ab5 12.Be6 Qe6 13.Qe6 Ke6 14.Rf8 h5+-) 11.Ba3 (11.Ba3 Qa3 12.Na3+-) 1-0. DEFFM – GuestWWYC, freechess.org, 2021.

6.fe3 Bb4 7.Bc4 c6 (7...Bg4 8.a3 Ba5 9.Bc3=) 8.0-0 (8.Ne5 fe5 9.Qh5 Kd7 10.Bg8 Rg8 11.Qg4 Ke8 12.Qb4+–) 8...Ne7? (better 8...cb5 9.Bb5 Bd7+=) 9.Ne5!+– fe5 10.Bf7 Kd7 (10...Kf8 11.Be6 Ke8 12.Qh5 Ng6 13.Bf7 Kd7 14.Qg4 Ke7 15.Qb4 Qd6 16.Qd6 Kd6 17.Nc3+–) 11.Qg4 Kc7 12.Qb4 a5?? (12...Qd6 13.Qe4 Nd7+–) 13.b6 Kd7 14.Qg4 Kd6 (14...Nf5 15.Qf5 Ke7 16.Qe5 Be6 17.Ba3 c5 18.Bc5 Kd7 19.Qe6) 15.Be5! Ke5 (15...Ke5 16.Qf4 Mate attack) 16.Qf4 1–0. GuestXHZJ – GuestCFDQ, freechess.org, 2020.

6.fe3 Bb4 7.Ne5 fe5 8.Qh5 Kf8 9.Bc4 Qe7 10.0-0 Nf6 11.Be5 Qe8?? (better 11...Bd6 12.Bf6 gf6=) 12.Rf6 gf6 13.Qh6 Ke7 14.Qg7 (14.Qg7 Qf7 15.Qf7 Kd8 16.Bc7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.fe3 c5 7.Bc4 Ne7 8.0-0 Bg4?? 9.Ne5 (9.Ne5 Qd4 10.Qc1 Qe5 11.Be5 fe5 12.e4+-) 1-0. GuestJVKF – GuestGMSM, freechess.org, 2020.

6.fe3 c5 7.Ne5 fe5=+ 8.Qh5 Kd7 9.Qe5 (9.Qf5 Kc7 10.Qe5 Qd6 11.Qd6 Kd6=+) 9...Nf6 10.Bc4 Bd6 11.Qg5 Qe7 12.0-0 Rf8 13.Nc3 Kc7?? (13...h6 14.Qg6 Be5+=) 14.Rf6!+– gf6 (14...Qf6 15.Nd5 Double attack (15.Nd5 Decoy); 14...Rf6 15.Nd5 Double attack; 14...gf6 15.Nd5 Double attack) 15.Nd5 Kd8 16.Bf6 Rf6 17.Ne7 (17.Qf6?! Qf6 18.Nf6 Bf5=; 17.Nf6?! Nd7 18.Nh7 Nb6+=) 17...Be7 18.Qg7 Be6 (18...Bf5 19.Bd5 Nd7+–) 19.Be6 Re6 20.Qg8 Kc7 (20...Kd7 21.Qh7 Kd8+–) 21.Qe6 1–0. onur604 (2285) – migarbi (2040), lichess.org, 2020.

6.fe3 Qd5 7.Be2 c6 (7...Be6 8.0-0=) 8.a4 (8.Nc3 Qe6+=) 8...cb5 (8...Bb4 9.0-0+=) 9.ab5 (9.Nc3 Qe6 10.ab5 a6+=) 9...Bd6 (9...Bb4 10.0-0+=) 10.0-0 Bd7 (10...a6 11.Nc3 Qe6 12.ba6 ba6 13.Nb5+/-) 11.Nc3 Qe6 12.Ra4 Ne7? (better 12...a6+/-) 13.Bc4+- Qg4 (13...Qf5 14.Nh4 Qg5 15.Ne4 Qh4 16.Nd6 Kf8 17.Bb3+-) 14.Bf7!! Kf7 15.Rg4 Bg4 16.Ne4 1-0. DEFFM – GuestPKLB, freechess.org, 2018.

6.fe3 Bd6 7.Bc4 Ne7 8.0-0 Bg4 9.h3 Bh5 10.Nc3 Nd7 11.Ne4 (11.d4 Bb4 12.Nd5 Nd5 13.Bd5 Qe7+/-) 11...Nc5 (11...Bg6 12.d3 Nb6 13.Bb3+/-) 12.Nc5 (12.Nd6?! cd6 13.Ba3 Ne4=) 12...Bc5 13.d4 e4 14.g4 ef3?? (better 14...Bg6 15.dc5 Qd1 16.Rad1 ef3+/-) 15.gh5+- (15.dc5?! Bf7 16.Qd3 a6+/-) 15...Bd6 16.Qf3 c6 17.Qe4 (17.h6!? gh6 18.Qf6 Kd7 19.bc6 Nc6 20.Be6 Kc7 21.Qg7 Kb6+-) 17...Rf8 18.Qh7 (better 18.bc6!? bc6 19.Qh7+-) 18...Qd7 19.Rf3 cb5 20.Bb3 Nc6 (20...0-0-0 21.Kf2 (21.Qg7? Rg8 22.Bg8 Rg8 23.Qg8 Ng8-+) 21...a5 22.a4 (22.Qg7?! a4=) 22...ba4 23.Ra4+-) 21.Qe4 (21.Kf2 Rc8+-) 21...Kd8 22.Be6 Qe7 23.Rf5 Re8 24.d5 Ne5 (24...Kc7 25.h6 (25.dc6?! Qe6 26.Qe6 Re6+=) 25...Nd8 26.Kf2 Ne6 27.de6 gh6 28.Rg1+- (28.Rb5?! b6+=)) 25.Bd4 Nd7 26.Rb1 b4 27.h6! Nc5 (27...gh6 28.Qh4 Decoy) 28.Qg2 Ne6 29.de6 Kc7 30.hg7 (30.Qg7? Rg8 31.Rg5 fg5-+ (31...Rg7? 32.Rg7 Rg8 33.Rg8+-)) 30...Rg8 31.Bf6 Qe6 32.e4 (32.Qg5 Rae8 33.Rb3 Kb8+-) 32...Rae8 33.Re1 Be7 (33...Qa2 34.h4 Ref8 35.h5+-) 34.Be5 (34.Bd4 b6+-) 34...Bd6 35.Bd4 b6 36.h4 Re7 37.Bf6 Bc5 (37...Qd7 38.Rg5 Bf4 39.Be7 Qe7 40.Rg6+-) 38.Kh1 Rd7 (38...Ree8 39.h5 Be7 40.Be5 Kb7 41.Qh3+-) 39.h5 Bd4 40.Qg3 Kb7 (40...Kc6 41.Qf4 Rgg7 42.Bd4+- (42.Bg7?! Bg7 43.Rg5 Qh3 44.Qh2 Qf3 45.Qg2 Qc3+-)) 41.Bd4 Rd4 42.Rf8 Rc4 (42...Rd8 43.Qf3 Rgf8 44.gf8R Rf8 45.Qf8 Qh3 46.Kg1 Qg4 47.Kf1 Qh3 48.Ke2 Qh5 49.Qf3 Qb5 50.Kd2 Qc6+-) 43.Rg8 Qg8 44.h6 (44.Rd1 Rc3 45.Rd7 Ka6+-) 44...Rc2 (44...Rc6 45.Qh3 Qh7 46.Qd7 Rc7 47.Qd5 Ka6 48.g8Q Qh6 49.Kg2 Rg7 50.Qg7 Qg7 51.Kf3+-) 45.Qd6 Rc5 46.Qg6 (46.Qf8 Rh5 47.Kg1 Rg5 48.Kf2 Qa2 49.Re2 Qe6+-) 46...Qd8 47.g8Q (better 47.Qf7 Ka6 48.Qf1 Ka5 49.Qh3+-) 47...Qh4= 48.Kg2?? (better 48.Kg1 Qe1 49.Kg2 Rc2 50.Kh3 Rc3 51.Kg4 Rg3 52.Kf5 Qf2 53.Ke5 Qb2 54.Kf5 Qf2 55.Ke5 Qb2 56.Kf5 Qf2=) 48...Rc2 49.Kf3 (49.Re2 Re2 50.Kf3 Rf2 51.Ke3 Qf4 52.Kd4 Rd2 53.Kc4 Qc7 54.Kb4 Qc5 55.Kb3 Rd3 56.Kb2 Qc3 57.Kb1 Rd1) 49...Rf2 50.Ke3 Qf4 51.Kd4 Rd2 52.Kc4 Qc7 53.Kb3 (53.Qc6 Qc6 54.Kb4 Qc5 55.Kb3 Qb5 56.Ka3 Qb2 57.Ka4 Rd4 58.Qc4 Rc4) 53...Qc2 54.Kb4 Rd4 55.Kb5 (55.Qc4 Qb2 56.Ka4 Rc4) 55…Qc5 (55...a6) 0-1. DEFFM – GuestLBKJ, freechess.org, 2019.

6.fe3 Bd6 7.Bc4 Bg4 8.h3 Bh5 9.g4 (9.0-0 a6 10.Nc3 ab5 11.Bb5 Nc6+/-) 9...Bg6 10.Nc3 Ne7 11.0-0 Nd7 12.Nd5 (better 12.d4!?+/-) 12...Nd5 (12...Bf7 13.e4=+) 13.Bd5= e4 (13...Nc5!?=) 14.Nh4 Nc5 15.g5 (better 15.Nf5!? Bf5 16.Rf5+=) 15...Be5=+ 16.Be5 fe5 17.Ng6 hg6 (better 17...Qg5!? 18.Qg4 Qg4 19.hg4 hg6 20.Bf7 Ke7 21.Bg6 Rh4 22.Rf7 Ke6-/+) 18.Bf7= Ke7 19.Bg6 Rh3 20.Rf7 (20.Qg4 Qh8 21.Kg2 Rh2 22.Kg3 a6+=) 20...Kd6=+ 21.Qg4 Attacking the isolated pawn on e4 21...Qh8 22.Be4? (better 22.Raf1=+) 22...Ne4?? (better 22...Rh4 23.Qf5 Re4-/+ (worse 23...Ne4 24.Rd7 Kc5 25.Qe5 Kb4 26.Rb1 Ka4 27.Rd4 Ka5 28.Qc7 b6 29.Ra4 Ka4 30.Qc4 Ka5 31.Qb4)) 23.Rd7?? (better 23.Qd7 Kc5 24.Qe7 Nd6 25.Qc7 Kb4 26.Qc3 (26.Qd6?! Ka4 27.Raf1 Rh1 28.Kf2 Rf1 29.Kf1 Qh5+/-) 26...Ka4 27.Qb3 Ka5 28.Qa3 Kb6 29.Qd6 Ka5 30.Qc7 Ka4 31.Qb7 Rg3 32.Kf1 Qh3 33.Ke2 Qg2 34.Kd3 Rd8 35.Kc4 Rg4 36.Kc5 Qb7 37.Rb7 Rc8 38.Kd6 Rd8 39.Ke5 Rg5 40.Kf4 Rb5 41.Ra7 Ra5 42.Ra5 Ka5 43.d4+-) 23...Kc5-+ 24.Qe4 (24.Rc7 Kb6 25.Qe4 Rg3 (25...Kc7?! 26.Qe5 Kb6 27.Qd4 Kb5 28.Rb1 Kc6 29.Qc4 Kd6 30.Qf4 Ke6 31.Qc4 Kd6 32.Qf4 Kc6 33.Qc4 Kd6=) 26.Kf1 Rf8 27.Ke1 Rg1 28.Ke2 Rf2 (28...Ra1?? 29.Qb7 Ka5 30.Qa6 Kb4 31.c3) 29.Kd3 Qd8 (29...Ra1 30.Qb7 Ka5 31.Qa6 Kb4 32.c3) 30.Kc3 Qc7 (worse 30...Kc7 31.Rg1 Qd2 32.Kc4 Qc2 33.Qc2 Rc2 34.Kd5=; 30...Ra1 31.Rb7 Kc5 32.Qc6) 31.Kb2 Ra1 32.Ka1 Rd2-+) 24...Rg3 25.Kf1 Rf8 (better 25...Qh3 26.Ke2 Rg2 (26...Qd7?! 27.Qe5 Kb6 28.Qg3=) 27.Qg2 Qg2 28.Kd3 Kb5-+) 26.Ke2+- Qh5 (26...Rg5 27.Rh1 Qh1 28.Qh1 Kb6+-) 27.Kd3 Qg5 (27...Kb6 28.Qe5 Qg6 29.Kc3 Ka5+-) 28.Rc7 (28.Qc4 Kb6 29.Qc7 Kb5 30.a4 Ka6 31.Qb7 Ka5 32.Rd5) 28...Kd6+- 29.Qb7 Qg6 30.Kc3 Qe8 (30...Qe4 31.Rc6 Qc6 32.Qc6 Ke7 33.Qc5 Ke6 34.Qf8 Rf3 35.Qf3 Kd6 36.Qc6 Ke7 37.Rf1 e4 38.Qd5 g5 39.Rf7 Ke8 40.Qd7) 31.Rc6 Qc6 32.Qc6 Ke7 33.Qc7 (33.Qc5 Ke6 34.Qf8 e4 35.Qe8 Kd5 36.Rf1 Rf3 37.Rf3 Kd6 38.Qg6 Kd7 39.Qg7 Ke6 40.Rf6 Kd5 41.Qg5) 33...Ke6+- 34.Qc6 Ke7 35.Qc5 Ke8 36.Qe5 (36.Qe5 Kf7 37.Rf1 Kg6 38.Qg3 Kh7 39.Rf8 a6 40.Qg5 g6 41.Qe7 Kh6 42.Rh8) 1-0. GuestHVTY – GuestYRLK, freechess.org, 2019.

6.fe3 Bd7 7.Bc4 Ne7 8.Be5 (8.0-0 Bf5+=) 8...fe5= 9.Ne5 Bf5?? (better 9...Qc8=) 10.Bf7 1–0. GuestFFHS – GuestMBNV, freechess.org, 2020.

6.fe3 Nd7 7.Be2 Ne7 8.0-0 c6 (8...Nb6 9.c4+/-) 9.d4 (9.Nc3 Nd5+/-) 9...Qb6 (9...Nd5 10.Qd2+/- (10.de5 Ne3 11.Qd3 Nf1-/+)) 10.a4 e4 (10...Nd5 11.a5 Qc7 12.Qd3+-) 11.Nfd2+- Nd5 12.Qe1 (12.Ne4?! Ne3 13.Qd3 Nf1 14.Bf1 Be7=) 12...Ne3? (better 12...cb5 13.ab5 Ne3+-) 13.Bh5 Kd8 (13...g6 14.Qe3 gh5+-) 14.Qe3 Bb4 (14...f5 15.Nc3 Nf6 16.Nc4+-) 15.c3 (15.Ne4!? g6 16.Bf3 Re8+-) 15…Bd6 1-0. DEFFM – GuestDTZJ, freechess.org, 2019.

6.fe3 Ne7 7.Bc4 Bg4?? (better 7...a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nd7+/-) 8.Ne5+- Bd1 (8...fe5 9.Qg4 Qd6+-) 9.Bf7 1-0. GuestTFGS – GuestPKXM, freechess.org, 2020.

6.fe3 Bf5 7.Bc4 c6 (7...Nh6 8.Nc3+/-) 8.a4 (8.Nh4 Nh6 9.Nf5 Nf5 10.Nc3+-) 8...Bc5 (better 8...Nh6!?+-) 9.0-0 a6 (9...Ne7 10.d4 Bb6 11.Nc3+-) 10.Ne5 Bc2 (10...Bg6 11.Nd3 Bd6+-) 11.Qh5 (better 11.Qc2 Nh6 12.bc6 Nc6 13.Nc6 bc6+-) 11...g6 12.Bf7 (12.Qh3 fe5 13.Bf7 Kf8 14.Bg6 Ke7 15.Rf7 Kd6 16.Bc2 Nd7 17.bc6 bc6 18.Rd7 Qd7 19.Be5 Ke7 20.Qh4 Ke8 21.Bh8 Qe7 22.Qh5 Kd7+-) 12...Ke7 (12...Kf8 13.Bg6! Bg6 14.Ng6 hg6 15.Qh8+- (15.Qc5?! Kg7+-)) 13.Bg6! Bg6 (13...Bg6 14.Ng6 Double attack; 13...hg6 14.Ng6 Double attack (14.Qh8 Pinning; 14.Qh8 Deflection)) 14.Ng6 hg6 15.Qh8 Nd7 (15...Kd7 16.Qg7 Kc8 17.Rc1+-) 16.bc6 bc6 17.Qg7 Ke6 (17...Kd6 18.Qg6 Kc7 19.Qc2+-) 18.Qg6 (18.Nc3 f5 19.d4 Qf6+-) 18...Qe8 (18...Rb8 19.Bd4 Bd4 20.ed4+-) 19.Qf5 Ke7 (19...Kf7 20.Nc3 Rb8 21.Rab1+-) 20.Na3 (20.Nc3 Kd8 21.Ne4 Rb8+-) 20...Qf7 21.Rac1 Qd5 22.Qh7 Kd6 (22...Qf7 23.Qc2 Rb8 24.Rf5+-) 23.Nc4 (better 23.Rf5!? Qe4 24.Rc4 Qe7+-) 23...Kc7 24.Bf6 Ngf6 25.Rf6 Rg8 26.Rf2 Kc8 (26...Rg5 27.h4 Qg8 28.Qe4+- (28.hg5 Qh7 29.Rcf1 Qe4-/+)) 27.Na5 Kc7 (27...Rg4 28.d4 Rd4 29.Qh8 Kc7 30.ed4 Bd4 31.Rc6 Qc6 32.Qd4 Qc1 33.Rf1 Qc5 34.Qc5 Nc5+-) 28.d4 Rb8 29.Rc5 Rb1 30.Qb1 Nc5 (30...Qf3 31.Rf3 Kd8 32.Rc6 Ke7 33.Qe4 Ne5 34.Qe5 Kd7 35.Rf7 Kd8 36.Qe7) 31.dc5 Qc5 (31...Kd8 32.Nb7 Ke7 33.Qh7 Ke8 34.Nd6 Qd6 35.cd6 Kd8 36.Rf8) 32.Rf7 Kc8 (32...Qe7 33.Qb7 Kd6 34.Qc6 Ke5 35.Nc4) 33.Qb7 (33.Qb7 Kd8 34.Qd7) 1-0. DEFFM – GuestKHCC, freechess.org, 2019.

6.fe3 Nh6 7.Bc4 Bg4 (7...Nd7 8.Nc3=) 8.h3 (8.Nc3 a6=) 8...Bh5 9.0-0 (9.Nc3 Nf5 10.Ne4 Nd6=) 9...e4=+ 10.g4 Ng4 (10...Bf7 11.Bf7 Nf7=+ (worse 11...Kf7 12.Ng5 Ke8 13.Ne4+–)) 11.Nd4 (11.hg4 Qd6 12.gh5 Qg3 13.Kh1 ef3 14.Qf3 Qh4 15.Kg1 Qc4 16.Qb7 Qg4 17.Kf2 Bd6+–) 11...g6?? (better 11...Qd6 12.Rf4 Ne3 13.Qh5 g6 14.Re4 Be7 15.Re7 Qe7+=) 12.hg4+– 1–0. GuestMQJQ – GuestCWZV, freechess.org, 2020.

6.Ne5? ef2 (6...ed2 7.Nd2 fe5 8.Qh5 Kd7 9.Qg4 Ke8 10.Qh5 Kd7=) 7.Kf2= fe5 8.Qh5 Kd7 9.Qf5 Ke8 10.Qh5 Kd7 11.Qf5 ½–½. Rosner,Dirk – Schulze, DDR–ch I724 corr, 1988.

6.fe3 Bc5

7.Bc4 Ne7 8.0-0 Bd7?? 9.Ne5!+– Bf5 (9...fe5 10.Qh5) 10.Qh5 g6 (10...Bg6 11.Bf7 Kf8 12.Bg6 Nd7 13.Nd7 Qd7+–) 11.Bf7 Kf8 12.Qh6 1–0. GuestGKNZ – GuestFYKG, freechess.org, 2020.

7.Bc4 Ne7 8.0-0 Nd7 9.Nh4 (9.d4 ed4 10.ed4 Nb6+=) 9...Nb6= 10.Bb3 Bd7 (10...Nbd5 11.c4 Ne3 12.de3 Be3 13.Kh1 Qd1 14.Rd1+=) 11.Qh5 (11.Rf6 Bg4 12.Bf7 Kf8 13.Be6 gf6 14.Qg4 Ng6+/–) 11...g6+= 12.Qe2 (12.Qf3 Rf8 13.a4 a6+/–) 12...Nf5 (12...Rf8 13.d4 ed4 14.ed4+/–) 13.Nf5+/– Bf5 14.Rf5! gf5 15.Qh5 (15.Qh5 Kd7 16.Qf5 Ke8 17.Be5+–) 1–0. GuestVZQN – GuestBSWT, freechess.org, 2017.

7.Bc4 Ne7 8.0-0 Nf5 9.Qe2+=.

7.Bc4 Ne7 8.d4 ed4 9.ed4 Bb6 10.0-0 c6 11.a4 a6 12.Re1 a5?? (better 12...Bg4+/-) 13.Ba3+- c5 14.Nc3 (14.Bc5?! Bc5 15.dc5 Qd1 16.Rd1 Nd7+/-; 14.dc5?! Qd1 15.Rd1 Bc7+-) 14...cd4 (14...Kf8 15.dc5 Bc7 16.c6 bc6 17.Be7 Qe7 18.Re7 Ke7 19.Qd4+-) 15.Re7 (better 15.Be7 Qc7 16.Bd6 Kd8 17.Bc7 Bc7 18.Nd4+-) 15...Qe7 16.Nd5 (worse 16.Be7 dc3 17.Kf1 Ke7 18.Qe1 Kd8 19.Rd1 Nd7+-) 16...Qd8 (16...d3 17.Kh1 Qe6 18.Qd3 Nd7 19.Nc7 Bc7 20.Be6 Nc5 21.Bc5 Be6+-) 17.Qe2 Kf7 (17...Kd7 18.Nb6 Kc7 19.Na8 Kd7 20.Qe6) 18.Nf4 Be6 (18...Qd5 19.Bd5 Be6 20.Qe6) 19.Qe6 1-0. DEFFM – GuestYXMJ, freechess.org, 2021.

7.Bc4 Nh6 8.Ne5! fe5 9.Qh5 (9.Qh5 Kd7 10.Be6 (10.Be5?! Qe8 11.Qh3 Kd8 12.Qh4 Be7 13.Qd4 Nd7=) 10...Ke6 11.Qe5 Kd7 12.Qc5+/-) 1-0. GuestYJGB – GuestYDQB, freechess.org, 2019.

6.fe3 c6

7.a4 Bd7 8.Ne5! fe5? (better 8...Be6 9.Bc4 Bc4 10.Nc4 Qd5+-) 9.Qh5+- Ke7 10.Ba3 Kf6 11.Bc4 g6 (11...Nh6 12.Rf1 Bf5+-) 12.0-0 Bf5 13.Qh4 g5 14.Rf5 Kf5 15.g4 Kg6 (15...Kf6 16.Qf2 Kg7 17.Qf7 Kh6 18.Bf8 Qf8 19.Qh5 Kg7 20.Qg5) 16.Qh5 Kg7 17.Bf8 Kf8 (17...Qf8 18.Qg5) 18.Qf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nc3+/-.

7.Bd3 cb5 8.Ne5 (8.Bb5 Nc6=) 8...fe5=+ 9.Qh5 Kd7 10.Qe5 (10.Qf5 Kc6 11.Qe5 Qh4 12.g3 Qe7 13.Qb5 Kc7 14.Qa5 b6 15.Be5 Kd8 16.Qd5 Bd7 17.Bc7 Kc7 18.Qa8 Nc6+-) 10...Qe7 11.Qd5 Ke8 12.Bb5 Bd7?? (better 12...Nd7 13.0-0 Ngf6 14.Bf6 gf6=) 13.0-0+/- Nc6 (13...Nf6 14.Qb7 Qe4 15.Qc8 Ke7 16.Ba3 Kf7 17.Bc4 Kg6 18.Qc7+/-) 14.Rf4+- Be6?? (better 14...a6 15.Bc6 Bc6 16.Qh5 g6+-) 15.Bc6 bc6 16.Qc6 Qd7 17.Qa8 Ke7 (17...Qc8 18.Qa7 Ne7+-) 18.Qf8 1-0. DEFFM – GuestJJQG, freechess.org, 2021.

7.Bd3 Bd7?? 8.Ne5!+- fe5 (8...Qe7 9.Qh5 g6 10.Ng6 Qf7+-) 9.Qh5 g6 10.Bg6 hg6 (10...Ke7 11.Ba3 c5 12.Bc5 Ke6 13.Bf7 Kf6 14.Rf1 Kg7 15.Be8 Ne7 16.Qe5 Kh6 17.Qf4 Kg7 18.Qf6 Kg8 19.Qf8) 11.Qg6 (11.Qh8?! Be6 12.0-0 Qg5 13.Be5 Nd7+/-) 11...Ke7 12.Ba3 (12.Ba3 c5 13.Bc5) 1-0. GuestKYDD – GuestSLFK, freechess.org, 2020.

7.Bd3 Ne7+/-.

7.Ne5 fe5+= 8.Qh5 Kd7 9.Qf5 (9.Be5 Nf6 10.Qg5 cb5 11.Bb5 Nc6+=) 9...Kc7=+ 10.Qe5 Bd6?? (better 10...Qd6 11.bc6 Nf6 (worse 11...Nc6 12.Qd6 Bd6 13.Bg7+=) 12.cb7 Bb7 13.Qd6 Bd6=+) 11.Qg7+- Ne7 12.Qh8 Qh8 13.Bh8 Bf5 (13...a6 14.Bd3 Ng6 15.Bd4 ab5 16.0-0+-) 14.Nc3 Nd7 (14...Bc2 15.Bf6+-) 15.bc6 Nc6 (15...bc6 16.Bd4 c5 17.Nb5 Kc6+-) 16.Nb5 Kb6 17.Nd6 Rh8 (17...Bc2 18.Bb2+-) 18.Rb1 Kc7 19.Nf5 b6 (19...Rf8 20.Bd3+-) 20.Bb5 Na5 (20...a6 21.Ba6 Ra8 22.Bc4+-) 21.Nd4 Nc5 (21...Re8 22.0-0 Re7 23.Rb4+-) 22.0-0 Ne4 23.Rf7 Kd6 24.Rd7 Kc5 25.Ne6 1-0. DEFFM – GuestMFCK, freechess.org, 2019.

6.fe3 e4

7.Nd4 b6? 8.Qh5+– g6 9.Qh4 Bf5?? (better is 9...Qe7 10.Ba3 Qe5 11.Bf8 Kf8+/–) 10.Nf5 gf5 (10...Nd7 11.Qe4 Ne7 12.Qe6 gf5 13.Bc4+–) 11.Qh5 Kd7 12.Qf5 Ke8 (12...Kd6 13.Nc3 c6 14.bc6 Nc6 15.Nb5 Ke7+–) 13.Qe4 (13.Qe4 Ne7 14.Bf6+–) 1–0. GuestVGMK – GuestMQST, freechess.org, 2017.

7.Nd4 c5 8.bc6! Nc6 9.Qh5 g6+/-.

7.Nd4 Bd7? 8.Bc4+- Ne7 (8...Qe7 9.Nc3 Nh6 10.Qh5 Kd8 11.0-0+-) 9.Qh5 g6 10.Qh4 Bg7 11.Qe4 f5 (11...Bc8 12.0-0 f5+-) 12.Qb7 Bd4 (12...Nc8 13.Qd5 Rf8 14.Ne6 Bb2 15.Nd8+- (15.Qa8 Qh4 16.g3 Qc4 17.Nf8 Kf8-/+)) 13.Bd4 (13.Qa8? Bb2 14.Qa7 Ba1-+; worse 13.ed4 Nbc6 14.bc6 Bc6+-) 13...c6 (13...Nbc6 14.bc6 Nc6 15.Bh8 Rb8+-) 14.Qa8 cb5 15.Bh8 bc4 16.Qa7 1-0. GuestCCQD – GuestRWMR, freechess.org, 2019.

7.Nd4 f5 8.Qh5 g6 9.Qh3 f4? (better 9...Nf6=) 10.Ne6+- fe3?? (10...Qe7 11.Bc4 Nf6+-) 11.Bh8 (worse 11.Nd8 Bh3 12.gh3 Kd8 13.Bh8 Bb4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.fe3 Be6

7.Nc3 Bb4 8.Bd3 Nd7 9.0-0 Ne7 10.a3 Bc3 11.Bc3 0-0 12.Bb4 Re8 13.Nh4 g6 14.Qf3 Rb8 15.Qg3 Kh8 16.Rf3 c5 17.bc6 bc6 18.Raf1 (18.Bd6 Rb7+=) 18...Bf7 (18...c5 19.Bc3=) 19.Bd6+= Rb7 20.Qh3 Kg8 21.Rg3 Nf8 22.Be7 (22.Rf6 Nd5 23.Rf7 Rf7 24.Bf8 Ref8 (24...Rff8?? 25.Ng6 Rf1 26.Bf1+–) 25.Ng6 hg6 26.Rg6 Rg7+=) 22...Rbe7 23.Nf5 Rd7 24.Nh6 Kg7 25.Ng4 Rd6 26.Qh6 Kg8 27.h4 Qe7 28.h5 e4 29.hg6 (29.Qf4 Bd5 30.Nh6 Kh8 31.Be4 f5 (worse is 31...Be4 32.Qd6 Kg7 33.Qe7 Re7 34.Ng4+–) 32.Bf5 Rf6+–) 29...Ng6 (29...Bg6 30.Bc4 Kh8 31.d3+=) 30.Rh3 Bd5 (30...ed3 31.Qh7 Kf8 32.Qh6 Kg8 33.cd3 Qe6 34.Nf6 Qf6 35.Rf6 Rf6+/–) 31.Qh5+/– ed3 (31...Kf8!? 32.Ba6 Rb8+/–) 32.Nh6+– Kf8 33.Nf5 Qc7 34.Qh6 Kg8 35.Nd6 Rd8 36.c4 (36.Rf6 Qg7 37.Nb7 dc2 38.Qg7 Kg7–+) 36...Bg2 37.Kg2 Rd6 38.Rg3 Qd7 39.c5 Re6 40.Rb1 Re8 41.Rb4 Qd5 (41...a5 42.Ra4+–) 42.Kf2+– (42.Kf2 Qd7 43.Rg6 hg6 44.Qg6 Kf8 45.Rg4+–) 1–0. Feldborg,Brian (2210) – Carapinha,Helena, DJ–CT18/pr43, 2011.

7.c4 Bc5 (7...Nd7!?+=) 8.Nc3 Nh6 9.d4 ed4 (9...Bb4 10.Bd3 0-0 11.0-0+–) 10.ed4 Bb4 11.a3 (11.Qb3 Bc3 12.Bc3 0-0+–) 11...Ba5 (11...Bc3 12.Bc3 0-0 13.Bd3+–) 12.Bd3 0-0 13.0-0 c6 (13...Bf5!?+–) 14.Qc2+– g6? (better 14...Kh8+–) 15.Bg6! f5 (15...hg6 16.Qg6 Double attack (16.Qe4 Decoy)) 16.Qe2 Qf6 (16...hg6 17.Qe6 Kh7 18.Ne4+–) 17.Bh7! Kh7 18.Qe6!! Qg7 (18...Qe6 19.Ng5 Double attack (19.Ng5 Decoy)) 19.Ne4! fe4 (19...Bd8 20.Ne5 Rg8+–) 20.Ng5!! Qg5 21.Rf8 cb5 (21...Qe3 22.Kh1 Nd7 23.Qd7 Kg6 24.Ra8 Qf4+–) 22.Qe4 Kg7 23.Raf1 Nd7 (23...Nc6 24.d5 Qf6 25.R1f6 Bb6 26.Kf1 Ne5 27.Qg6 Ng6 28.R6f7) 24.d5 (24.d5 Nf6 25.R1f6 Qe3 26.Qe3 Bb6 27.Rf2 Kh7 28.Qe4 Nf5 29.Qf5 Kh6 30.Bc1 Be3 31.Be3 Kg7 32.Qf7) 1–0. Silent Move (2115) – ledinscak (1700), redhotpawn.com (2), 2015.

7.d4+/-.

7.Be2 Bd6 8.0-0 Ne7 9.d4 (9.Nc3 a6=) 9...e4 (9...Nd5 10.Re1=) 10.Nfd2 f5 (10...Nd5 11.Nc4=) 11.c4+= Bb4 (better 11...Ng6!? 12.c5 Bf8+=) 12.d5+– Bd2 (12...Bf7 13.Bg7 Rg8 14.Bd4+–) 13.Nd2+– Bd7 (better 13...Bf7+–) 14.Bg7 Rg8 15.Bf6 Kf7 (15...Qc8 16.Bh5 Ng6 17.Ne4 fe4 18.Qd4+–) 16.Ne4! fe4 (16...Rg6 17.Qd4 Qe8 18.Be5+–) 17.Bh5 Rg6 18.Bh4 Kg7 (18...Kg8 19.Bg6 hg6 20.d6+–) 19.Qd4 Kg8 20.Bg6 hg6 21.d6 cd6 22.Qd6 Nf5 (22...Qe8 23.Be7 Bf5+–) 23.Qg6 (23.Qg6 Ng7 24.Qf7 Kh7 25.Bd8 Be6 26.Qb7 Nc6 27.Qa8 Nd8 28.Qe4 Kg8 29.Rad1 Bf5 30.Rd8 Kh7 31.Rf5 Nf5 32.Qf5 Kg7 33.Rd7 Kg8 34.Qe6 Kf8 35.Qf7; 23.Bd8?! Nd6 24.Rac1 Nf5+–) 1–0. DEFFM – GuestVMCV, freechess.org, 2020.

6.fe3 Bg4

7.Nc3 Bb4 8.Bc4+/-.

7.Bc4 a6 8.Nc3 ab5 9.Nb5+/-.

7.Bc4 Bd6 8.Nc3 Ne7 (8...f5 9.h3 Bh5 10.0-0+-) 9.0-0 a6 10.ba6 (10.a4!? ab5 11.ab5 Nd7+-) 10...Na6+/- 11.d4 e4? (better 11...ed4!? 12.ed4 Qd7+/-) 12.Ne4+- f5? (12...Nb4+-) 13.Neg5 Nc6 (13...Nd5 14.Bd5 Bh2 15.Kh2 Qd5+-) 14.Nf7 Qf6 15.Nh8 Na5 16.Qe2 Nc4 (16...g6 17.e4 Qh8 18.ef5 Kd8 19.Rae1+-) 17.Qc4 0-0-0 (17...Ke7 18.e4! Qe6 19.Qe6 Ke6 20.ef5 Kf6 21.d5 Ke7 22.Bg7 Bf3 23.Rf3+-) 18.Nf7 Rf8 (18...Bf3 19.Nd8 Bg2 20.Kg2 Qd8 21.Rf5+-) 19.Nd6 Qd6 20.Ne5 Bh5 21.e4! fe4 (21...f4+-) 22.Rf8 Qf8 23.Qe6 Kb8 24.Nd7 (24.Nd7 Ka7 25.Nf8+-) 1-0. adlai – Sergant, internet, 2021.

7.Bc4 e4 8.h3 ef3 9.hg4 fg2 10.Rg1 Nd7 (10...f5!? 11.Rg2 Qh4 12.Ke2 Nd7+/-) 11.Qf3+- Ne5?? (better 11...Nb6 12.Qe4 Be7+-) 12.Be5 fe5 (12...Bd6 13.Bd4 Ne7+-) 13.Qf7 1-0. GuestLCHT – GuestCHJB, freechess.org, 2020.

7.Bc4 Ne7 8.h3?? Bf3 (8...Bf5 9.Nh4=) 9.Qf3+= c6 10.0-0 Qc7 (10...Ng6 11.a4+=) 11.Qh5 (11.Nc3 Nd7+/-) 11...Ng6 (11...g6 12.Qf3 f5 13.Nc3+=) 12.Bd3+/- Qf7 13.a4 (13.Nc3 Nd7+/-) 13...Nd7+= 14.bc6 bc6 15.Qf3 (15.Nc3 Nc5 16.Be2 Rd8+=) 15...Rc8 (15...Rb8 16.Ba3 Ba3 17.Na3 Ne7+=) 16.Qe4 (better 16.Be4!?+=) 16...Nc5= 17.Qc4 Nd3 (17...Rb8 18.Ba3 Nd3 19.Qd3 Qd7=) 18.Qf7 (better 18.Qd3!? Rb8 19.Ba3=) 18...Kf7-/+ 19.cd3 Rb8 20.Bc3 Bd6 (20...Bc5 21.Be5 Ne5 22.d4 Bd4 23.ed4-/+) 21.d4 Rhe8 (21...ed4 22.Bd4 c5 23.Bc3=+) 22.Na3 Ba3 23.Ra3 Ke6 (23...e4 24.Ba5=+) 24.de5 (24.Rc1 e4=+) 24...Ne5 (24...fe5 25.Ba1=) 25.Be5 (25.Bd4 a6=) 25...Ke5 (25...fe5 26.Rc3 Rb6 27.Rfc1=) 26.Rc3 Red8 (26...Kd6 27.Rfc1 Rb6 28.Kf2=) 27.d4+= Kd6 28.Rfc1 Rdc8 (28...Rb6 29.Kf2=) 29.Rc5+= Rb7 (29...Rb2 30.a5+=) 30.e4 (30.Kf2 a6+=) 30...Rb4 (30...Re7 31.Re1=) 31.e5 fe5 32.de5 Kd7 33.a5 a6 (33...h5 34.Kf2=) 34.Rd1 (34.Kf2+=) 34...Kc7 (34...Ke7!?+=) 35.Rd6 (35.e6 Rb7+-) 35...Kb7 36.e6 Re4 (better 36...Rc7+/-) 37.Rd7 (better 37.Kf2!?+/-) 37...Rc7= 38.Rd6 Re2 (38...Rc8 39.Kf2 g6+/-) 39.Kf1 (39.Kh2 Rb2+/-) 39...Re4 (39...Rb2 40.Rf5 Rb5 41.Rb5 cb5 42.Ke2+/-) 40.Kf2 h6 41.Kf3 Re1 (41...Rb4 42.Rf5+/-) 42.g4 (42.h4 Rf1 43.Kg3 Rb1+/-) 42...Rh1 43.Kg2 Re1 (43...Rb1 44.h4+/-) 44.h4 White prepares g5 44...Re4 (44...Re3 45.Kf2 Rb3 46.h5+/-) 45.Kf3 Re1 (45...Rb4 46.h5+/-) 46.g5 (46.h5 Rb1+/-) 46...h5 (better 46...Rb1+/-) 47.Kf2 (better 47.g6!?+/-) 47...Re4= 48.Kf3 (48.Kg3 Re3 49.Kf4 Rh3=) 48...Rh4 49.g6 Rh1 50.Kg2 Rh4 51.e7 (51.Rf5 Kc8+/-) 51...Re7 (51...Re4!?=+) 52.Rcc6= Rb4 53.Rb6 Rb6 54.Rb6 Ka7 55.Kg3 Re5 (55...Re3 56.Kf4 Ra3 57.Re6 Ra4 58.Kg3 Rg4 59.Kf3=) 56.Rd6 Ra5 57.Rd7 Kb6 58.Rg7 (better 58.Kh4 Ra1 59.Kh5=) 58...Ra4-/+ 59.Rh7 (better 59.Kf3!? Rg4 60.Rg8-/+) 59...Rg4-+ 60.Kf3 Rg6 61.Rh5 Re6 62.Rg5 (62.Rh2 a5-+) 62…a5 0-1. WG_Anonymous – Anonymous, lichess.org, 2020.

7.Bd3 b6? 8.0-0 (8.Be4 c6 9.h3 Be6+-) 8...c5 (8...Ne7 9.Nc3+-) 9.Be4 Nd7 10.Ba8 (10.Qe2 Be6 11.d4 cd4 12.ed4 Rc8+-) 10...Qa8 11.h3 (11.Qe2 e4 12.Qc4 Bh5 13.Qe6 Ne7+-) 11...Bh5 12.Qe1 Bd6 13.Na3 (13.Qg3 Ne7 14.Qg7 Rg8 15.Qh7 Bg6+-) 13...Ne7 (13...e4 14.Qh4 Bg6 15.Nc4+/-) 14.Nc4 Bc7 15.Qh4 (15.e4 0-0+-) 15...Bf7+/- 16.Qg4?? (16.d3+/-) 16...Bc4?? (16...f5 17.Qg7 Rg8 18.Nb6 ab6 (worse 18...Rg7 19.Na8 Bb8 20.d4+/-) 19.Qh7 Qa4-/+) 17.Qc4+- Nd5?! (17...Qd5 18.Qd5 Nd5+-) 18.e4 Nf4 19.g3 Nh3 (19...Ng6+-) 20.Kh2 Ng5 (20...Nf4 21.gf4 Ke7+-) 21.Ng5 fg5 (21...Kd8 22.Nf7 Ke7 23.Nh8 Qh8+-) 22.Qe6 Kd8 23.Rf7 Qc8 (23...Qc6 24.bc6 Kc8 25.Qd7 Kb8 26.Qc7 Ka8 27.Qa7) 24.Qe7 1-0. DEFFM – GuestRXCH, freechess.org, 2019.

7.Bd3 Nd7!?+=.

7.Be2 a6!?+/-.

7.Be2 Bc5 8.Ne5 Be2 9.Qe2 fe5 10.Qh5 Kf8 11.0-0 Nf6 12.d4 (12.Qe5?! Be7=; 12.Be5?! Be7=) 12...ed4 (12...Bd4!? 13.ed4 ed4+/–) 13.Qc5+– Qe7 14.Qd4 Nbd7?? (better is 14...Ke8+–) 15.Ba3 (15.Ba3 c5 16.bc6 bc6 17.Be7 Ke7 18.Nc3+–) 1–0. DEFFM – GuestXYRX, freechess.org, 2018.

7.Be2 c6 8.a4 cb5 9.ab5 Bc5 10.0-0 Nh6 11.Ne5 Be2? (better 11...Be3 12.de3 Qd1 13.Bd1 fe5 14.Be5 Rf8+-) 12.Qe2 fe5 13.Qh5 Nf7 (13...Kd7 14.Qe5 Qe7 15.Qg7 Qg7 16.Bg7 Rc8 17.Bh6 Bd6+-) 14.Qf7 1-0. DEFFM – GuestKQFN, freechess.org, 2020.

7.Be2 Bd6 8.0-0 Nd7 9.a4 Ne7 10.h3 Be6= 11.Qe1 (11.Nc3 Nf5=) 11...Ng6 (11...Nb6 12.Ba3=) 12.Nc3 Qe7 13.h4 (13.a5 0-0-0=) 13...h5 (13...0-0-0 14.h5 Ngf8 15.a5=) 14.Ne4 0-0-0 15.a5 Bf5 (15...Kb8 16.Bd3 Ngf8 17.Nd6 Qd6 18.Ba3+=) 16.Bd3 Rh6?? (better is 16...Kb8+=) 17.Nd6+– (17.Nd6 cd6 18.Bf5+–) 1–0. Janek – tinhho, internet, 2017.

7.Be2 Ne7 8.0-0 g6 9.Ne5 (9.Bc4!? Nd5 10.Qe1 Bf3 11.Rf3+- (11.gf3?! a6+/-)) 9...Be2+/- 10.Qe2 fe5 11.Be5 Rg8 12.Qc4 (better 12.Nc3!? Nd7 13.Bd4+=) 12...Nd7?? (better 12...Qd5 13.Qc7 Qb5=+) 13.Qf7 1-0. GuestRJJW – GuestBXWZ, freechess.org, 2019.

7.Be2 h5 8.0-0 Qd7 (8...Ne7+-) 9.h3 g5?? (9...Be6 10.Ne5! fe5 11.Bh5 Rh5 12.Qh5 Bf7 13.Qe5 Be6+-) 10.hg4 hg4 11.Ng5! fg5 12.Bg4 Qb5 (12...Qh7 13.Be5 Bg7+-) 13.Bh5 Kd8 (13...Rh5 14.Qh5 Kd7 15.Qg4 Kc6 16.Qf3 Qd5 17.Qf8 a6+-) 14.Rf8 (14.Rf8 Ke7 15.Ba3 c5 16.Nc3+-) 1-0. Ddgs – Draess, internet, 2019.

7.Be2 Nh6 8.0-0 Bd6 9.d4 ed4 (9...e4 10.Ne5 Be2 11.Qe2=) 10.Nd4 (10.ed4 0-0+=) 10...Be2 11.Qe2 Qe7 12.Qh5 (12.Qf3 0-0=) 12...Kd8= 13.Qf3 c6 (13...Kc8!?=) 14.Nd2 cb5 (14...Re8 15.Nc4 (15.bc6?! Nc6 16.Nc6 bc6+/-) 15...Bh2 16.Kh2+-) 15.Nb5 Nc6? (15...Bc5 16.Ne4 Nd7+-) 16.Qd5+- Qe3 17.Kh1 (17.Kh1 Qc5 18.Qd6 Qd6 19.Nd6+-) 1-0. DEFFM – Pushkin, freechess.org, 2018.

5.e3 Bg4

6.ed4 e4 7.Qe2 f5? (better 7...Qe7 8.h3 Bh5+/-) 8.h3 Bh5 9.g4! Bg6 (9...fg4 10.Qe4 Deflection) 10.gf5 Bf5 11.Nc3 Be7 (11...Nf6 12.Nh4 Bc8 13.Rg1 Qd4 14.0-0-0+-) 12.Ne4 Nh6 (12...Nd7 13.Rg1 Ngf6 14.Neg5+-) 13.Nc5 (better 13.Rg1 0-0 14.Qc4 Kh8 15.d5+-) 13...Qd5 (13...0-0 14.Rg1 Re8 15.Qc4 Kh8+-) 14.Rg1 Nd7 (14...Qd6 15.Rg7 Kf8 16.Nb7+-) 15.Rg7 Nf7 (15...Qd6 16.Ng5 0-0-0 17.Re7+- (17.Qe7? Rhe8 18.Qe3 Re3 19.de3 Nc5-+)) 16.c4 (16.Bg2!? Qd6 17.Nh4 Bc2+-) 16...Qd6 17.Nh4 Nc5 (17...Bc2 18.Rc1 (worse 18.Nb7 Qf6 19.Ba3 Nd6 20.Re7 Qe7 21.Bd6 cd6 22.Nd6 Kf8 23.Qe7 Ke7+-) 18...0-0-0 19.Rc2 Bh4 20.Nb7 (worse 20.Rf7 Qg6 21.Rd7 Rde8+-) 20...Kb7 21.Qe4 (21.Rf7 Rde8 22.Bg2 Kb8+-) 21...Kb8 22.Qh4+- (22.Rf7 Rhe8 23.d3 Nc5 24.Qe8 Re8 25.Kd1 Qg6-+)) 18.Nf5 Qe6 19.dc5 Qe2 (19...Qf5 20.Bg2 Rd8+-) 20.Be2 Bc5 21.Bh5 0-0-0 22.Bf7 Rhf8 23.0-0-0 Rd3 24.Be6 Kb8 25.Be5 Ba3 26.Kc2 Rh3 27.Rc7 Ka8 (27...Rc3 28.dc3 a5 29.b6 Ka8 30.Bd5 Bd6 31.Rb7 Re8 32.Re7 Kb8 33.Re8) 28.Bd5 Rf5 (28...Rf5 29.Rc8; 28...Rc3 29.dc3 a5 30.Rb7 Bd6 31.Rf7 Kb8 32.Bd6 Kc8 33.Be6 Kd8 34.Rf8) 0-1. DEFFM – GuestZBZP, freechess.org, 2019.

6.ed4 Bf3?? 7.Qf3+- (7.gf3?! ed4 8.Qe2 Ne7+=) 7...Nd7 8.de5 Ne5 9.Qb7 Rc8 (9...Bd6 10.d4 Nf7 11.Qc6 Kf8 12.Be2+-) 10.Be5 fe5 11.Bc4 Ne7 12.0-0 (12.Qa7!? Nd5+-) 12...Qd4 13.Na3 g5 (13...Rd8+-) 14.Be6 Rd8 15.Nc4 (15.Qc7?! Qd6 16.Qd6 Rd6+-) 15...Bg7 (15...e4 16.Qc7 Bg7 17.c3+-) 16.Qc7 e4 17.Rae1 Qf6 (17...h5+-) 18.Re4 h5 (18...Ng6 19.Bf7 Kf8+-) 19.Nd6 Kf8 20.Qd8 1-0. GuestSBKR – Tsarkan, freechess.org, 2018.

6.h3 Bc8 7.Bc4 (7.ed4 e4 8.Qe2 Qe7+-) 7...de3? (better 7...c5+-) 8.Ne5 h5 (8...Qe7 9.Nf7 ed2 10.Kf1 Qb4 11.Nd2 Qb2 12.Nh8 Nh6 13.Qh5 Kd8+-) 9.Bf7 Ke7 10.Ba3 c5 11.Bc5 Qd6 12.Bd6 Kd6 13.de3 Ke5 14.Qd5 1-0. DEFFM – paunmarius, freechess.org, 2020.

6.h3 Bf3 7.Qf3 Bc5 8.Qb7 Nd7 9.Bc4 Ne7 10.0-0 Rb8 11.Qf3 c6 12.a4 Nb6 13.Bb3 cb5?! (13...Nbd5+-) 14.ab5 Nbd5 (14...Kf8 15.ed4 ed4 16.Re1+-) 15.ed4 Bd4 (15...ed4 16.c4 dc3 17.Nc3 Nc3 18.Bc3+-) 16.Bd4 ed4 17.Re1 Rb5 (17...0-0 18.Ra4 Rb5 19.Rd4+-) 18.Ra7 0-0 (18...Rb3 19.Qb3 Kf8+-) 19.Ree7 Kh8 20.Rg7 f5 (20...Qc7 21.Rac7 Ne7 22.Rge7 Rh5 23.Qh5 Rf7 24.Rf7 h6 25.Rh7) 21.Rh7 Kg8 22.Rag7 1-0. GuestNTFH – GuestXVCJ, freechess.org, 2020.

6.h3 Bf3 7.Qf3 Qc8? 8.ed4+- ed4 9.Bc4 Nd7 (9...Bd6 10.Bd4 a6 11.Qd5+-) 10.Bd4 (better 10.Bg8 Rg8 11.Qe4 Be7 12.Qh7+-) 10...Nh6? (10...Ne7 11.0-0+-) 11.Qh5 (better 11.Bd5 Rb8 12.Ba7+-) 11...g6 12.Qe2 Be7 13.0-0 b6? (better 13...Kd8+-) 14.Re1 Nf5 (14...Qd8+-) 15.g4 Qd8 (15...Kd8 16.gf5 Bd6 17.Nc3 gf5 18.Nd5+-) 16.gf5 gf5 (16...Kf8 17.Qe3 g5+-) 17.Qh5 (17.Qh5 Kf8 18.Qf7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.h3 Bh5

7.ed4 e4= 8.Qe2 Qd5? 9.Nc3+- Bf3? (9...Qd7+-) 10.Nd5 (10.gf3?! Qd4 11.Qe4 Qe4 12.fe4 Bd6+-) 10...Be2 11.Nc7 (11.Ke2?! Kd7+-; 11.Be2?! Bd6+-) 11...Kd7 12.Na8 Bf1 13.Rf1 Kc8 14.b6 a6 15.c4 Nd7 (15...Nc6 16.f3 ef3 17.Rf3+-) 16.c5 Ne7 17.Nc7 Nc6 18.f3 Nb4 19.0-0-0 (19.Ke2 Nd3 20.Bc3 Nf4 21.Ke3 Ng2 22.Ke4 g6+-) 19...Na2 (19...f5 20.g4 g6 21.gf5 gf5 22.fe4 fe4 23.Rf7+-) 20.Kb1 ef3 (20...Nb4 21.fe4 h6 22.Bc3+-) 21.Ka2 fg2 22.Rfe1 g5 (22...Bd6 23.cd6 Nb6+-) 23.Re8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.ed4 e4= 8.Qe2 Qe7 9.g4 ef3 10.Qe7 Ne7 11.gh5 Nd7+=.

7.ed4 e4 8.Qe2 Be7?? 9.Qe4+- Nd7 (9...c6 10.Bc4+-) 10.Bc4 Bg6 11.Qb7 Rb8 12.Qa7 (12.Qa6 Qc8 13.Qc8 Rc8+-) 12...Nh6 (12...Be4 13.Qa4 Nb6 14.Qb3 Nc4 15.Qc4+-) 13.0-0 (13.Nc3 Nb6 14.Bb3 Nf7+-) 13...Bc2 (13...Be4 14.Qa5 c6 15.Qc3 cb5 16.Bb3+-) 14.Re1 Nf7 (14...Nf5 15.Na3 Nb6 16.Be6+-) 15.Ba3 0-0 (15...Nd6 16.Bd6 cd6+-) 16.Be7 Qe8 (16...Qc8 17.Qa3 Re8 18.Nc3+-) 17.Bf8 Kf8 18.Re8 Re8 19.Qc7 (19.Qc7 Bf5 20.Nh4+-) 1-0. DEFFM – GuestJXLL, freechess.org, 2021.

7.g4 Bf7 8.ed4 e4 9.Qe2+/-.

7.g4 Bg6 8.ed4+/- Be4 (better 8...e4!? 9.Nh4 Bf7+/-) 9.de5+- Bf3 (9...fe5 10.Nc3 Bf3 11.Qf3 c6+-) 10.Qf3 (10.Qf3 c6 11.Bc4+-) 1-0. DEFFM – guestsrbin, freechess.org, 2018.

5.e4 c5

6.Bc4 Qd6 7.a4 (7.Bb3!?+/-) 7...Be6 8.Na3 Ne7 9.0-0 Nd7 (9...Ng6 10.g3+=) 10.a5 g6 (10...Ng6 11.g3+=) 11.c3 Bc4 (11...Bh6!?+=) 12.Nc4+/- Qe6 13.d3 (13.Qb3 Bh6+/-) 13...Bg7 14.cd4 cd4 15.Bd4 ed4 16.Nd4 Qg8 17.Nd6 (better 17.b6 f5 18.Nb5+-) 17...Kd8?? (17...Kf8 18.Rc1 f5+/-) 18.Qc2+- Nc8 (18...f5 19.Rac1 Nc8 20.Qc7 Ke7 21.N4f5 gf5 22.Nf5 Ke6 23.Qb7 Be5 24.Qd5 Kf6 25.Qd7 Qf7 26.Rc6 Nd6 27.Rd6 Bd6 28.Qd6 Qe6 29.e5 Kf7 30.Nh6 Qh6 31.Qh6 Rhg8 32.Qf6 Ke8 33.Rc1 Rg2 34.Kg2 a6 35.Rc7 ab5 36.Qe7) 19.Nb7 Ke7 20.Qc7 Qe8 21.Nc5 Bf8 (21...Nd6 22.f4 Qc8 23.Nc6 Kf7 24.Qd6 Nc5 25.Qe7 Kg8 26.Qc5 Kf7 27.Qe7 Kg8+-) 22.Nc6 (22.Nc6 Kf7 23.Nd7+-) 1-0. DEFFM – GuestTKKZ, freechess.org, 2019.

6.Bc4 Nd7 7.Na3+/-.

6.Bc4 Qe7 7.0-0 Be6 8.Qe2 Nh6 9.a4 (9.Na3 Nd7+/-) 9...Nd7 10.a5 Qf7 11.Na3 Bd6 12.b6 (12.d3 Qe7+/-) 12...ab6+= 13.Nb5 (13.ab6!? 0-0 14.Be6 Qe6 15.Qc4=) 13...Bb8=+ 14.Be6 Qe6 15.ab6 Ra1 16.Ra1 Nb6 17.Ba3 Qc6 18.c3 0-0 (better 18...dc3!? 19.Nc3 0-0=+) 19.cd4+= ed4 20.Rc1 Na4?? (better 20...Qd7 21.Qd3 c4+/-) 21.Qc4+- Kh8 (21...Rf7 22.Qa4 b6 23.h3+-) 22.Qa4 b6 23.Qa6 Qe4 (23...Rc8 24.Nbd4! Qe8 25.Nc2+-) 24.Qb6 Bf4 (24...d3 25.Re1 Qc4 26.Bc5+-) 25.Qc5 Re8 (25...Rd8 26.Re1 Qa8 27.Bb4+- (worse 27.Nbd4 Bd6 28.Qd6 Rd6 29.Bd6 Nf7+-)) 26.Qd4 Bd2 (26...Qd4 27.Nbd4 g5+-) 27.Qd2 Nf5 (27...Ra8 28.Nd6 Qe6 29.Re1+-) 28.Qd7 h6 (28...h5 29.Nc7 Rb8 30.Re1+-) 29.Nc7 Re5 (29...Rb8+-) 30.Ne5 Qe5 31.Ne6 Kh7 32.Nf8 (32.g4 Qe2 33.Nf8 Kg8 34.Qd5 Kh8 35.Qf5 Qg4 36.Qg4 f5 37.Qg6 Kg8 38.Rc8 Kh8 39.Ne6) 32...Kg8+- 33.Ng6 Kh7 34.Ne5 (34.Ne5 Nd4 35.Rc7 Ne6 36.Qd3 f5 37.Qf5 Kh8 38.Rc8 Nd8 39.Rd8) 1-0. DEFFM – iradj, freechess.org, 2019.

6.Bc4 Ne7 7.0-0 Qb6 8.a4 a5 9.Na3 Be6 10.d3 (10.c3 Bg4+=) 10...Nc8 (better 10...Ng6+=) 11.Ne5 (better 11.c3+=) 11...fe5–/+ 12.Qh5 Ke7 (12...Kd7 13.Qe5 Qd6 14.Be6 Qe6 15.Qe6 Ke6 16.Nc4=+) 13.f4 (13.Qg5 Kd7=+) 13...Nd7–/+ 14.Qg5 Kd6?? (14...Ke8!? 15.fe5 Ne7=+) 15.Be6 (better 15.f5 Bf5 16.Rf5+–) 15...Ke6= 16.fe5 Ne7?? (better 16...Qc7 17.Nc4 Ndb6=) 17.Qg4+– Ke5 (17...Nf5 18.Nc4 Qc7 19.Qf5 Ke7+–) 18.Nc4 1–0. DEFFM – elmerski, freechess.org, 2019.

4.Nf3 Qf6

5.c3 dc3!? 6.Nc3 Nd7+= 7.Qc2 (7.Rc1 Qd6 8.Qc2 Ngf6 9.e3 Qc5 10.Bd3 Be7 11.Ng5 Qb4 12.Nce4; 7.g3 Qd6 8.Qc2 Ngf6 9.Bg2 Qc5 10.0-0 Bd6 11.a4 0-0 12.d3) 7...Qg6 8.Qg6 hg6 9.Nd5 Kd8 10.Ne5 Ne5 11.Be5 Rh5 12.Nc7.

5.c3 c5 6.cd4 cd4 7.e3 Bc5 8.Qc2 Nd7 9.Bd3 Ne7 10.0-0 0-0 11.Bh7 Kh8 12.Bd3.

5.c3 Bc5 6.cd4+/- ed4 7.e3 Nh6 (7...Qg6 8.Bd4 (8.ed4 Bd6 9.Ne5 Qe4 10.Qe2 Qe2 11.Be2 Be6 12.0-0) 8...Bd4 9.Nd4+/- Ne7 10.Qc1 c6 11.Qa3 Nd7 12.bc6; 7...Nd7 8.ed4 Bd6 9.Nc3 Qg6 10.g3 Ne7 11.Be2 0-0 12.0-0) 8.Qc2 Nd7 9.ed4 (9.Nd4!? Qb6 (9...Qe7 10.Bd3 Ne5 11.Be4 Nhg4 12.0-0) 10.Nc3+- 0-0 11.Na4 Qd6 12.Bd3) 9...Bb6 (9...Bd6 10.Nc3+= (10.Bd3 Qe7 11.Kf1 Nf6 12.Nc3) 10...Qg6 11.Qg6 hg6 12.Ne4; 9...Bb4 10.Bd3 Qe7 11.Kf1 Nf6 12.Nc3) 10.Bd3 Qe6 (10...g6 11.0-0 0-0 12.a4) 11.Kf1 0-0 (11...Nf6!?+/- 12.Ba3) 12.a4 c6 13.Na3 a6 (better 13...Nf6!? 14.Ng5 Qg4 15.Nh7 Nh7 16.Bh7 Kh8+/-) 14.Re1+- Qd6 15.Nc4 Qc7 16.bc6 Qc6 17.Ba3 (worse 17.Bh7 Kh8+-; 17.Nb6?! Qc2 18.Bc2 Nb6+/-) 17...Rd8 (17...g6+-) 18.Be4 (18.Nb6?! Qc2 19.Bc2 Nb6+/-) 18...Qf6 (18...Qc7 19.Bd6 (19.Nb6?! Qc2 20.Bc2 Nb6+/-) 19...Nf6 20.Bc7 Bc7 21.Ng5 Ne4 22.Qe4+-) 19.Bh7 (19.Nb6?! Qb6 20.Be7 Re8+-) 19...Kh8 20.Be7 (20.Nb6?! Qb6 21.Bd3 Kg8+-) 20...Qc6 (20...Bd4 21.Bf6 Bf6 22.Be4+-) 21.Bd8 Bd8 (21...f5 22.Ng5 Nf8+-) 22.Re8 (22.Re8 Nf8 23.Rf8 Ng8 24.Rg8) 1-0. PIERRE (2140) – klaussinho, internet, 2010.

5.c3 Nd7 6.cd4 e4 7.Ne5 Qf5 8.g4 Qe6 9.Qc2 Nb6 10.e3 Ne7 11.g5 f6 12.gf6.

5.e3 Bc5 6.Bc4 Ne7 7.ed4 ed4 8.0-0 (8.c3 0-0=) 8...Bg4 9.c3 Bf3 (9...Bd6 10.cd4 a6 11.Nc3=) 10.Qf3 Qf3 11.gf3 dc3 (11...a6 12.cd4 Bd6 13.Nc3=) 12.Nc3 0-0 (12...Nd7 13.Ne4=) 13.Ne4+= Bb6 (13...Bb4 14.Rab1+=) 14.a4 (14.Ba3 Nf5 15.Bf8 Kf8+/-) 14...a6 (14...Nf5!?=) 15.Ba3 (better 15.a5 Ba7 16.ba6 ba6 17.Ba3+/-) 15...Re8? (better 15...ab5 16.ab5 Bd4+=) 16.Ng5+- ab5 (16...Kf8 17.Nh7 Kg8 18.Ng5+-) 17.Bf7 Kf8 18.Bb3 Bd4?? (18...Rc8 19.ab5 Ra7+-) 19.Nh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

5.e3 Bc5 6.ed4 ed4 7.Qe2 Ne7 8.Qc4 The pressure on d4 grows 8...b6 9.Bd4 Bd4 10.Qd4 Qe6 11.Be2 0-0 12.Nc3 Bb7 13.0-0 c5 14.Qf4 Nd7 15.Rfe1 Ng6 (15...Rfe8 16.Bd3 Qf6 17.Qc7 Bf3 18.Qd7+- (18.gf3?! Nf8+=)) 16.Qc7+- Bf3 (16...Rab8 17.Bd3 Rfc8 18.Qc8 Rc8 19.Re6 fe6 20.Ng5+-) 17.Bf3 (worse 17.gf3 Nde5 18.Qb7 Qf5=+) 17...Rac8 18.Qa7 Qf5? (better 18...Nde5 19.Be4 Qd6 20.Bg6 Ng6+-) 19.Be4 Qg4 20.h3 Qe6 21.Bg6 Qg6 22.Qd7 Qc2 (22...Rcd8 23.Qb7 Rd2 24.Rac1+-) 23.Nd5 Rcd8 24.Qc6 Qd2 25.Ne7 Kh8 26.Qb6 Qb4 (26...c4 27.a4+-) 27.Nc6 Rd2 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Bc5 6.ed4 ed4 7.Qe2 Ne7 8.Qe4 d4 seems the pivot of the position (8.Qc4 Nd7 9.Bd4 Bd4 10.Qd4 Qd4 11.Nd4 0-0+=) 8...0-0= 9.Bd3 (9.Bd4!? Bf5 10.Bf6 Be4 11.Be7 Be7 12.Bd3 Bd3 13.cd3=) 9...a6?? (better 9...Bf5 10.Bd4 Bd4 11.Qd4 Qd4 12.Nd4 Bd3 13.cd3 Rd8=) 10.Qh7 1-0. DEFFM – GuestYGVX, freechess.org, 2020.

5.e3 Bc5 6.ed4 Bd4 7.Nd4 ed4 8.Qe2 Be6 (better 8...Ne7!?=) 9.Qe4+/- c6 (9...Qe7!? 10.Bd4 Nf6+/-) 10.Bd4+- (10.Bd4 Qh6 11.Qe5+-) 1-0. DEFFM – aankanom, freechess.org, 2021.

5.e3 de3 6.fe3 (6.de3 Nd7+/-) 6...Bd6 7.Bd3 (7.Bc4 Nd7 8.0-0 Qe7+=) 7...Bg4 (7...Qe7 8.0-0+=) 8.0-0 (8.Na3 Nd7 9.h3 Bf3 10.Qf3 Qf3 11.gf3 Ngf6+=) 8...Nd7+= 9.Nc3 Ne7 (9...Qh6 10.Ne4+=) 10.Ne4 Qh6 11.Qe1 f6 12.Nd6 (12.Bc4 0-0-0+/-) 12...cd6+= 13.Ba3 Nc8 (better 13...Nc5!?+=) 14.Be4 0-0 (14...Rb8 15.Nh4+-) 15.Bb7 Rb8 16.Bd5 Kh8 17.c4 (17.Bc6 Rd8+-) 17...Re8 (17...f5 18.Bc6 Ncb6 19.Bb4 Bf3 20.Rf3+/-) 18.Qb1 (18.Qg3 Qh5+-) 18...a6 (18...Nc5!? 19.Qc2+/-) 19.Bc6 Re7 (19...ab5 20.cb5 Na7 21.Qe4+-) 20.Qc2 g6 (20...Rb6 21.Rac1 Be6 22.Qd3+-) 21.ba6 Rb6 (21...Nc5 22.Bc5 dc5 23.Rab1 Rb1 24.Qb1+-) 22.Bb7 Na7 (22...Qf8 23.Rab1 Nc5 24.Bc5 dc5 25.Qa4 Rb1 26.Rb1+-) 23.Rab1 Rb1 (23...Re6 24.Rb6 Nb6 25.c5 dc5 26.Qc5 Bf3 27.Bf3+-) 24.Qb1 Bf5 Black prepares the advance e4 25.Qb3 Be6 (25...Re8 26.Bd6 Qg7 27.c5+-) 26.Bd6 Rf7 (26...Re8 27.Bd5 Bd5 28.cd5+-) 27.d4 e4 (27...Kg8 28.d5 Bg4 29.c5 Bf3 30.Rf3+-) 28.Nd2 Qe3 (28...Kg8+-) 29.Qe3 f5 30.d5 Bd5 31.Bd5 Rf6 32.Qa7 Nf8 (32...Rd6 33.Qd4 Nf6 34.a7 Kg7 35.a8Q Rd5 36.cd5 e3 37.Qb7 Kh6 38.Qf6 Kh5 39.Qh7 Kg4 40.Qhg6) 33.Be5 (33.Be5 Nd7 34.Qd7 f4 35.Bf6; 33.Bf8 Rf7 34.Qf7 f4 35.Qf6) 1-0. GuestFVNG – GuestBCYR, freechess.org, 2020.

5.e3 Bg4 6.Be2 Bc5 7.Nd4 Be2 8.Ne2 Qg5 (8...Nd7 9.d4 Bd6 10.c4+/-) 9.0-0 Nf6 10.f4 ef4 11.Nf4 0-0 (better 11...Nbd7!?+/-) 12.Nh3+- Qg6 (12...Qg4 13.Bf6 Qd1 14.Rd1 gf6 15.d4+-) 13.Bf6 gf6 14.Nf4 Qg5 15.Rf3 (15.Qf3 c6+-) 15...Nd7?? (15...Rd8 16.d4 Kh8+-) 16.Rg3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Bg4 6.Be2 Nd7 7.ed4 0-0-0 8.Ne5 Be2 9.Qe2 (9.Ke2?! Nh6 10.Nf3 g5+=) 9...Re8 (9...Ne5 10.de5 Qg6+-) 10.0-0 Ne5 (10...Nh6 11.Qc4+-) 11.de5 Qf5 12.d4 Ne7 13.Nc3 f6 14.Rae1 fe5 15.de5 h5 (15...Ng6 16.Ne4+-) 16.e6 (better 16.f4 Kb8+-) 16...g5 (16...Ng8 17.Qc4 Qc5+-) 17.Qc4 Bg7 (17...Rh6 18.Re4 c6+-) 18.b6! ab6 (18...ab6 19.Nb5 Combination) 19.Nb5 Nd5 (19...Nc6 20.Bg7 Rh7+-) 20.Nd6 Kb8 21.Nf5 Bb2 22.Qd5 h4 23.e7 g4 24.Re4 (24.Re3 Be5 25.Qe5 g3 26.Nd6 Rc8 27.Qd5 c6 28.Qe5 gf2 29.Rf2 Rc7 30.Qh8 Rc8 31.Qc8 Ka7 32.Qb7) 24...g3 25.Nd6! gh2 (25...cd6 26.Qd6 Mate attack) 26.Kh2 c6 27.Qf7 Reg8 28.e8Q Re8 29.Qb7 1-0. DEFFM – GuestHFCY, freechess.org, 2019.

5.e3 Bg4 6.Be2 Nd7 7.ed4 ed4 8.Bd4 Qe7 (8...Qd6!? 9.Be3 Be7+/-) 9.0-0+- 0-0-0 10.Re1 Bf3 (10...Ngf6 11.Nc3 Bf3 12.Bf3+- (12.gf3?! Qb4 13.Be3 Bd6+=)) 11.Bf3 (11.gf3 Qg5 12.Kf1 Qf4-+) 11...Qb4 12.Ba7 (12.c3 Qb5 13.a4 Qa6+-) 12...Bc5 (12...b6 13.Bc6 Ngf6 14.Qf3+-) 13.Bc5 Nc5 14.Nc3 Qa5 (14...Nf6 15.h3+-) 15.a4 (15.Qe2 Nf6 16.Qe7 Ne6 17.Qf7 Nd4+-) 15...Nf6 16.Re7 Rd7 (16...Rhf8 17.Qe1+-) 17.Bg4 Ng4 18.Qg4 Ne6 19.Rd7 Kd7 20.Qf3 Kc8 (20...Rf8+-) 21.Qf7 Nd4 (21...Nd8 22.Qg7 Re8 23.Nd5+-) 22.Qg7 (better 22.Nd5 Rd8 23.Re1 Kb8+-) 22...Rd8 23.Qh7 Nc2 (23...Qb4+-) 24.Qc2 Qa4 (24...Kb8+-) 25.Qa4 Rd2 (25...b6 26.Qe4 Kd7 27.Qf5 Kd6 28.Qf6 Kd7 29.Nd5 Kc8 30.Qc6 Rd5 31.Ra8) 26.Qg4 Kb8 (26...Kd8 27.Qe6 c6 28.b6 Ra2 29.Ra2 c5 30.Rd2) 27.Qg8 Rd8 28.Qd8 1-0. GuestMBRL – GuestBJBB, freechess.org, 2020.

5.e4 Bc5= 6.c3 Bg4 7.Be2 dc3 (7...Nd7 8.0-0+=) 8.Nc3 a6?? (better 8...Ne7+=) 9.Nd5+- Qd8 10.Be5 (10.Ne5?! Be2 11.Qe2 Nf6+-) 10...Bd6 (10...Nf6 11.Nc7 Kf8 12.Na8 Nbd7 13.Bf6 gf6+-) 11.Bg7 c6 (11...ab5 12.Bh8 c6 13.Ne3 Bf3 14.Bf3+-) 12.bc6 Nc6 13.Bh8 Bf3 (13...Be6 14.Bc3+-) 14.Bf3 (14.gf3 Qg5+-) 14...Qg5 (14...Be5 15.Be5 Ne5 16.d4 Qa5 17.Qd2 Qd2 18.Kd2 Nf3 19.gf3+-) 15.Rb1 (better 15.Qb3 Rb8+-) 15...0-0-0 (15...Ra7 16.Qc2 Nge7 17.h4+-) 16.d4 (better 16.Qb3 b5 17.a4 Nce7+-) 16...Na5 (16...Nge7 17.Bf6 Qh6 18.Qb3+-) 17.h4 (better 17.e5!? Nc6 18.Qc2 Nge7+-) 17...Qg6 18.h5 Qe6 19.Bg4 f5 20.Bf5 (20.Bf5 Qf5 21.ef5+-) 1-0. DEFFM – GuestFKVT, freechess.org, 2019.

4.Nf3 Nf6

5.Ne5 Bd6 6.Bd4 0-0 7.e3 c5 8.bc6! Nc6 (8...bc6 9.Nc4 Combination; 8...Nc6 9.Nc6 Combination) 9.Nc6 bc6 10.Nc3 Re8 (10...c5 11.Bf6 Qf6 12.Ne4+/-) 11.Qf3+- c5?? (better 11...Rb8+-) 12.Bf6 (12.Qa8 cd4 13.Nb5 Bb4=) 12...Be5 (12...Bb7 13.Bd8 Bf3 14.gf3 Red8+-) 13.Bd8 (13.Bd8 Rb8 14.Bg5+-) 1-0. DEFFM – GuestRQNK, freechess.org, 2020.

5.Ne5 Bd6 6.Bd4 Be5 7.Be5+- 0-0 8.e3 Re8 9.Bf6 (9.d4 Nbd7 10.Bg3 Nb6+-) 9...Qf6 10.Nc3 a6 (10...Qg6 11.Rb1+-) 11.Bd3 (11.Qf3 Qf3 12.gf3 Be6+-) 11...ab5 12.Nb5 (better 12.Qh5 h6 13.Qb5+-) 12...c6?? (better 12...Na6+-) 13.Nc7 Re3 (13...Qe5 14.Na8 Qa5 15.c4 Qa8 16.Qc2+-) 14.de3 Qc3 (14...Ra3 15.f4 Qe7 16.Qh5 Qc7 17.Qh7 Kf8 18.Qh8 Ke7 19.Qg7+-) 15.Ke2 Ra3 (15...Ra5 16.Bf5! Qf6 17.Bc8+-) 16.Bf5! Qc4 (16...Bf5 17.Qd8 mate Mate attack) 17.Kf3 Re3 (17...Qh4 18.Bc8 Qf6 19.Ke2 Qe7+-) 18.fe3 (18.fe3 Qh4 19.Bc8 Qf6 20.Ke2+-) 1-0. DEFFM – GuestYTYP, freechess.org, 2018.

5.Ne5 Bd6 6.Bd4 Be5 7.Be5 0-0 8.e3 Ng4 9.Bb2 (better 9.Bf4+-) 9...Nf2?? (better 9...a6+-) 10.Kf2 Qh4 (10...Nd7 11.Qf3+-) 11.g3 Qe4 (11...Qg5 12.Qf3+-) 12.Bd3 Qg4 13.Qg4 Bg4 14.Be4 c6 15.Nc3 Nd7 (15...Rc8 16.Rab1+-) 16.bc6 bc6 17.Bc6 Rad8 (17...Rac8 18.Bg2+-) 18.Nd5 Ne5 (18...Nb8 19.Ne7 Kh8+-) 19.Be5 Rd5 20.Bd5 1-0. DEFFM – GuestJQTJ, freechess.org, 2019.

5.Ne5 Nbd7 6.Bd4 Ne5 7.Be5 Bc5 8.e3 0-0 9.Be2 Qd5 (9...Bd6 10.Bd6 Qd6+-) 10.Bf6 (worse 10.Bc7 Qg2 11.Bf3 Qg5+-) 10...Qg2? (10...gf6 11.0-0 Bd6+-) 11.Bf3 (11.Bf3 Qg6 12.Be5+-) 1-0. onur604 (2320) - ahmed19812013 (2115), Casual Rapid game, lichess.org, 2021.

5.Ne5 Qd5

6.Nf3 Bc5 7.e3 de3 8.fe3 Nbd7+/-.

6.Nf3 Bc5 7.e3 de3 8.fe3 Ne4 9.Bg7+- Bg4?? (9...Rg8 10.Nc3 Nc3 11.Bc3 Bf5+-) 10.Bh8 Be3 (10...f6 11.c4 Qh5 12.Bd3+-) 11.Qe2 (better 11.Bd3 Bf2 12.Kf1 Bh4+-) 11...Bf3 (11...Bf2 12.Kd1 Kf8+-) 12.Qe3 Nd7 13.gf3 Ndc5 14.fe4 Ne4 15.Bd3 0-0-0 16.Be4 Qb5 17.Bf6 Rd6 18.Nc3 Qd7 19.Qa7 Ra6 (19...Qe8 20.Qb7 Kd7 21.Qb5 c6 22.Qb7 Ke6 23.0-0 Rd3 24.Bd3 Kd6 25.Rae1 Qg8 26.Kf2 Qg2 27.Kg2 Kc5 28.Rf4 Kd6 29.Qe7) 20.Bb7 (20.Qb7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2020.

6.Nf3 Bc5 7.e3 de3 8.fe3 Bg4 9.Bf6 gf6 10.Nc3 Qe5?? (better 10...Qe6+/-) 11.Ne5+- Bd1 12.Nd3 (12.Nd3 Be3 13.de3 Bc2 14.Nd5+-; 12.Nd1?! fe5 13.Bc4 0-0+-; 12.Kd1?! fe5 13.Bd3 Nd7+-) 1-0. DEFFM – GuestQYDQQQ, freechess.org, 2019.

6.Nf3 Qb5

7.Bd4 c5 8.e3 (better 8.Bf6 gf6 9.Nc3+-) 8...cd4?? (better 8...Qb6 9.Bf6 Qf6+/-) 9.Bb5+- Bd7 10.Bd7 Nbd7 11.0-0 (11.Nd4 Bc5+-) 11...de3 12.fe3 (12.Qe2 Be7 13.Qe3 Nd5+-) 12...Be7 13.c3 0-0 14.d4 Ne4 15.Qd3 Ndf6 16.Nbd2 Nd6 (16...Nd2 17.Nd2 Rad8 18.e4+-) 17.e4 Nde8 18.Ne5 Nc7 19.Rf3 (19.Rab1 Rab8+-) 19...Ne6 20.Raf1 Ng5 (20...Rad8 21.Qb1 Rb8 22.Rd1+-) 21.Rg3 (21.Rf5 h6+-) 21...h6 22.h4 Ne6 23.Nef3 (better 23.Qb5!? Rab8+-) 23...Rad8 (23...Nh5 24.Nh2 Nef4 25.Rf4 Nf4 26.Qf3+-) 24.e5 Nd5 25.Nh2 (25.Rf2 b5+-) 25...Ndf4 (25...Bh4 26.Rg4 Bg5 27.Ne4+-) 26.Qe4 Bh4 27.Rg4 (better 27.Rgf3 Bg5 28.Nc4 Rd7+-) 27...Ng6 (27...Bg5 28.Nhf3 b5 29.Ng5 hg5 30.Nf3+-) 28.Rh4 (28.Rg6 fg6 29.Qh4 Rfe8+-) 28...Ng5 29.Qg4 Nh4 30.Qh4 Rc8 31.Ne4 Ne4 32.Qe4 Rc3 (32...Rc7 33.e6 Re7 34.d5+-) 33.Ng4 (better 33.Qb7 a5 34.d5+-) 33...g6 (33...Rc6+-) 34.Nf6 Kg7 35.Rf3 (35.e6 Rcc8 36.Qe5 Kh8 37.e7 b6 38.Ne8 f6 39.ef8Q Kh7 40.Nf6) 35...Rc1 (35...Rf3 36.Qf3 b5 37.Nd7+-) 36.Kh2 Rc6 37.Rh3 (better 37.d5 Rc7 38.e6 h5+-) 37...h5 (37...Rfc8 38.Rh6! Rc1 39.Rh7 Kf8 40.Qd5 Rh1 41.Kh1 Rc1 42.Kh2 Rh1 43.Kh1 Ke7 44.Rf7) 38.Rg3 (38.Rh5 Rfc8 39.Rh7 Kf8 40.Qd5 Re6 41.Qd7 Rf6 42.ef6 Rc1 43.Qf7) 38...Rd8 (38...Rh8 39.Rb3 Rb8 40.Rb7 Rb7 41.Qc6+-) 39.Nh5 Kf8 40.Nf6 Rc4 41.e6 Rcd4 42.e7 Kg7 43.Qe5 Re4 (43...Rh4 44.Rh3 Rh3 45.Kh3 Rd3 46.Kg4 Rg3 47.Kg3 b6 48.e8Q a6 49.Qg8 Kh6 50.Qf8) 44.Nh5 (44.Ne8 Kg8 45.Qg7) 44...Kh6 45.Qe4 (45.Qg7 Kh5 46.Qh7) 45...Re8 (45...Rg8 46.Qf4 Kh7 47.Qf7 Kh6 48.Qg8 g5 49.Qg5 Kh7 50.Qg7) 46.Qe3 (46.Qf4 g5 47.Qg5 Kh7 48.Qg7) 46...Kh5 (46...Kh7 47.Qe5 Rg8 48.Nf6 Kg7 49.Ne8 Kh6 50.Rh3) 47.Rh3 (47.Qg5) 47...Kg4 48.Rg3 Kf5?? (better 48...Kh5 49.Qg5) 49.Qf3 (49.Rg5 Kf6 50.Qe5) 49...Ke6 (49...Ke5 50.Qc3 Kf5 51.Qc5 Ke6 52.Re3 Kd7 53.Rd3 Ke6 54.Qd6 Kf5 55.Rd5 Ke4 56.Qe5) 50.Qe4 Kd7 (50...Kf6 51.Qd4 Kf5 52.Rf3 Ke6 53.Rf6 Ke7 54.Qd6) 51.Rd3 Kc7 52.Qc4 Kb8 (52...Kb8 53.Rd8 Rd8 54.ed8Q; 52...Kb6 53.Rb3 Ka5 54.Qb5). ClayPigeons (2135) - freshmind (2065), Rated Bullet game, lichess.org, 2019.

7.Bd4 Bc5 8.Bf6+- gf6 9.e3 Qb2 (9...Qa5 10.Nc3+-) 10.Nc3 Bb4? (better 10...Nd7+-) 11.Rb1 Qa3 12.Nb5 Qa5 (12...Bd2 13.Qd2 Qe7 14.Qa5+-) 13.Rb4! Qb4 (13...Na6 14.Rh4+-) 14.Nc7 Kd8 15.Na8 Nc6 (15...b6 16.c3 Qe4 17.Nb6 ab6 18.Qb3+-) 16.Qa1 Re8 (16...Qd6 17.Ng5! Ke7 18.Ne4+-) 17.Qf6 Ne7 (17...Qe7 18.Qc3+-) 18.Qe5 Qb1 19.Ke2 Qc2 (19...Rg8 20.Qd6 Bd7+-) 20.Qd6 Bd7 21.Ne5 Qc8 22.Nf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bd4 Nc6 8.Bf6 gf6 9.e3 Qd5 10.Nc3 Qh5 11.Bb5 Bd7 12.0-0 Qg6 13.Bd3 f5 14.Rb1 0-0-0 15.Nd5 Bc5 (15...Bd6 16.g3+/-) 16.g3 Qg7 (16...Rhg8 17.Be2+/-) 17.Rb5+- Qf8 18.Qb1 Bb6 (18...b6!?+/-) 19.c4 Ne7 20.Ne7 (20.Rb6?! cb6 21.Ne7 Qe7 22.Bf5 Qf6+/-) 20...Qe7 21.Bf5 c6 22.Re5 Bf5 (better 22...Qf6+-) 23.Re7 Bb1 24.Rb1 c5 (24...f5 25.d4+-) 25.d4 Rd7 (25...cd4 26.c5 Bc7 27.Nd4+-) 26.Rd7 Kd7 27.dc5 Ba5 (27...Bc5 28.Rb7 Ke6 29.Ng5 Kf5 30.Nf7+-) 28.Rb7 Kc6 29.Ra7 Bd8 30.Ne5 (30.Ne5 Kc5 31.Rf7+-) 1-0. DEFFM – GuestDZVZ, freechess.org, 2021.

7.Bd4 Be7 8.Nc3 Qd7 9.e3+/-.

4.Nf3 Bg4

5.Ne5 Bd7 6.e3+- de3 7.de3 Bb4 (7...Be6 8.Qd8 Kd8 9.Nc3+-) 8.c3 Bd6 9.Nf7! (9.Nd7?! Nd7 10.Nd2 Ngf6+/-) 9...Kf7 10.Qf3 Nf6 11.Qb7 Na6 (11...Nc6 12.bc6 Be6 13.Qa6+-) 12.Qa6 (worse 12.ba6 Rb8 13.Bc4 Kg6 14.Bd3 Kh6 15.Qa7 Rb2-/+) 12...Rb8 (12...Re8 13.Bc4 Be6 14.Nd2+-) 13.Bc4 Be6 (13...Kg6 14.a4+-) 14.Be6 Ke6 15.c4 Rb6 16.Qa5 (16.Qa7!? Bb4 17.Bc3 Bc3 18.Nc3 Qd3+-) 16...Qe7 17.0-0 Ra8 18.Nc3 Be5 19.f4 Bc3 20.Qc3 Rd6 (20...Kf7+-) 21.Ba3 Rad8 (21...Kf7 22.Bd6 cd6 23.Rad1+-) 22.e4 Qd7 (22...Qe8 23.Bd6 cd6 24.Rfe1+-) 23.c5 Rd3 (23...Ne4 24.Qe5 Kf7 25.cd6 Nd6+-) 24.Qc4 Ke7 25.c6 Ke8 26.cd7 R8d7 27.e5 R3d4 28.Qe6 Re7 29.Qe7 1-0. DEFFM – NemFaids, freechess.org, 2021.

5.Ne5 Be2?? 6.Qe2 Qe7 7.Bd4 (7.g3 Nd7 8.Nd7 Qe2 9.Ke2 Kd7 10.Bd4 a6 11.Bh3 Kd8+-) 7...Nd7 8.Nd7 Kd7 (8...0-0-0 9.b6! a6 10.Nc3 Qd7 11.Qc4+-) 9.g3 (9.Be3 Nf6 10.g3 Qe5+-) 9...Nh6 (9...Qe2 10.Ke2 a6 11.Bh3 Kd8 12.b6+-) 10.Bh3 f5 11.Be3 Re8 (11...Rd8 12.Nc3 g5 13.Bg2+-) 12.0-0 Qb4 (12...Kc8 13.Nc3 Qd7 14.Qc4+-) 13.Nc3 Kc8 14.Qf3 Kb8 (14...Qc4+-) 15.Bg2 Re4 16.Bh6 gh6 17.Ne4 fe4 18.Qf6 Rg8 19.Qd8 1-0. GuestPSSG – GuestMMWP, freechess.org, 2020.

5.Ne5 Bf5 6.e3 Bc5? (better 6...de3!? 7.de3 Qd1 8.Kd1 f6+/-) 7.Qf3+- Bg6?? (7...Be6 8.Bc4 Bc4 9.Nc4 Qc8+-) 8.Qb7 Nd7 9.Nd7 Kd7 (9...Bd6 10.Nc5! Ne7 11.Bd4+-) 10.Qc6 Ke7 11.Qc5 Ke8 (11...Qd6 12.Bd4 Nf6 13.Bc4+-) 12.b6 Ne7 (12...Qd6 13.Bb5 Ke7 14.Bd4+-) 13.Bb5 Kf8 14.bc7 Rc8 (14...Qd5 15.Qd5 Nd5+-) 15.cd8Q Rd8 16.Ba3 (16.Ba3 Kg8 17.Qe7+-) 1-0. DEFFM – dakeyno, freechess.org, 2021.

5.Ne5 Bh5 6.c3 dc3!? 7.Nc3 Nd7+-.

5.Ne5 Bh5 6.c3 dc3 7.Nc3 Nf6 8.g3+-.

5.Ne5 Bh5 6.c3 Qd5 7.cd4 Qb5 (7...Nd7 8.Qa4 Ne5 9.de5+-) 8.Qc2 Nc6 9.Nc3 Qb6 (9...Qb4 10.e3 Ne5+-) 10.Nd5 Qb5 (10...Qa5 11.e4 Nb4+-) 11.Nc7 (11.Nc7 Kd8 12.Nb5+-) 1-0. DEFFM – omspcz, freechess.org, 2019.

5.Ne5 Bh5 6.c3 f6 7.Nc4 (7.Nf3!? Bf3 8.gf3 d3+-) 7...d3 8.f3 Bc5? (better 8...a6 9.Nba3 Ba3 10.Na3 Ne7+-) 9.ed3 Bg6 (9...Ne7 10.d4 Bd6 11.Bd3+-) 10.d4 Be7 11.Be2 c5 (11...Nh6 12.0-0+-) 12.bc6! Nc6 (12...bc6 13.Ba3 Combination; 12...Nc6 13.Ne3 Combination) 13.0-0 b5 (13...Nh6 14.Nba3+-) 14.Ne3 a6 15.a4 (15.Re1 Nh6 16.a4 b4+-) 15...b4 16.Bc4 White prepares d5 (better 16.d5 Na5 17.f4+-) 16...a5 (16...Kf8+-) 17.Bb5 Qc7 18.d5 Bd3 (18...Kf8 19.dc6 Bd6+-) 19.Bc6 Kf7 20.Ba8 (20.Ba8 Bd6 21.Qb3+-) 1-0. GuestSXPT – GuestWCFS, freechess.org, 2020.

3.Bb2 Bd6

4.a4 b6 5.e3 Bb7 6.Nf3 f5?? 7.Ne5+/- Qf6? (better 7...Nf6+/-) 8.Qh5+- g6 9.Ng6 Qb2 10.Nh8 Kd7 (10...Kd8 11.Nf7 Kc8 12.Qh7 Ne7 13.Nd6 cd6 14.Qe7 Qa1+-) 11.Qf7 (better 11.Qf5 Kd8 12.Nf7 Ke8 13.Qh7+- (worse 13.Nd6 cd6 14.Qg4 Ne7+-)) 11...Ne7+= 12.Bd3 Qh8 (12...c5!? 13.bc6 Nbc6=) 13.Bf5+/- Kd8 14.Nc3 Nd7 (14...Nf5!? 15.Qf5 d4 16.ed4 Qd4 17.Qg5 Kd7+-) 15.Qh7+- Qh7 (15...Qf6 16.Bd7 Kd7 17.Qh3 Kd8 18.Qf3+-) 16.Bh7 Nf6 17.Bd3 c5 18.Bf1 Kc7 19.d4?? (better 19.h4+-) 19...cd4+= 20.ed4 (better 20.Nd1 de3 21.fe3+=) 20...Nf5?? (better 20...Bb4!? 21.0-0-0 Bc3=+) 21.0-0-0 (21.Ne2 Bb4 22.c3 Nd4+/-) 21...Bb4? (better 21...Ng4 22.Bd3 Nd4+=) 22.Kb2?? (22.Na2 Ba3 23.Kb1 Re8+-) 22...Ng4?? (better 22...Bc3 23.Kc3 Ne4 24.Kb3 Nf2=+) 23.Rd2+/- Rc8 24.Kb3 Ba5 25.Re2?? (better 25.h4+/-) 25...Nd4-/+ 26.Kb2 Bc3 27.Kc3 Ne2 28.Be2 Nf2 29.Rf1 Kd6 30.Kb2 Ne4 31.g4 (31.Bd3 Rg8 32.g3 Rh8 33.Be4 de4 34.Rf6 Kc5-+) 31...Nc3 (31...Rh8 32.Rf7 Nc5 33.Rf6 Ke7 34.Rf2-+) 32.Rf6 Ke5 33.Rf5 (33.Rf7 Na4 34.Kc1 Nc5-+) 33...Ke6 34.Bd3 (34.Rf2 Na4 35.Ka3 Nc3-+) 34...Na4 35.Kb3 (35.Kc1 Nc5 36.Rf3 Nd3 37.Rd3 Rc4-+) 35...Nc5 36.Kb2 (36.Kb4 Nd3 37.cd3 a5 38.ba6 Ba6-+) 36...Nd3 37.cd3 d4 (37...Rc5 38.d4 Rb5 39.Kc2-+) 38.h4 (38.Rf4 Rh8 39.Rd4 Rh2 40.Kc3 Rh7-+) 38...Rc5 39.Rc5 bc5 40.Kb3 (40.g5 Bd5-+) 40...Bd5 41.Ka4 (41.Kc2-+) 41...Bf3 42.g5 (42.b6 ab6 43.h5 Be2-+) 42...Be2 (42...c4!? 43.dc4 d3 44.Ka5-+) 43.Ka5 (43.Kb3 Bd3 44.h5 Kf5-+) 43...Bd3 (better 43...c4 44.dc4 d3 45.Ka6-+) 44.h5 (44.Ka4-+) 44...Bb5! 45.Kb5 d3 46.h6 Kf7 0-1. chessbit (1890) - lestrada30 (1930), Rated Rapid game, lichess.org, 2020.

4.a4 c6 5.e3 cb5 6.ab5 Bd7 7.Nf3 Nf6 8.Ne5 0-0 9.Nd7 Nbd7 10.c4 (10.Be2 Re8+/-) 10...dc4 11.Bc4 Nb6 12.Be2 Rc8? (12...Qe7 13.0-0+/-) 13.0-0 (13.Ra7 Rc7+-) 13...Ne4 (13...Bb8!?+/-) 14.Ra7+- Bc5 (14...Bb8 15.Ra1+-) 15.d4 Bd6 16.Bf3 (16.Rb7 Nc4 17.Bc4 Rc4+-) 16...Qh4 17.g3 Bg3?? (17...Qe7+-) 18.fg3 Ng3 19.hg3 Qg3 20.Bg2 Nd5 (20...Nc4 21.Qb3+-) 21.Rf3 (better 21.Qf3!? Qf3 22.Rf3 Rc2+-) 21...Qg6 22.Rb7 (better 22.Na3 Qb6 23.Qa4+-) 22...Rfe8 (22...Rc2 23.Nd2 Rb2 24.e4+-) 23.Nc3! Ne3 (23...Rc3 24.Bc3 Combination; 23...Nc3 24.Bc3 Combination) 24.Qb1 (better 24.Re3 Re3 25.Nd5+-) 24…Qg2 0-1. Jimito100 (1945) - Beasti555 (2105), Rated Bullet game, lichess.org, 2020.

4.a4 Nd7 5.e3 Ngf6 6.Nf3 0-0 7.h4 e4 8.Ng5 h6 9.c4 (9.Nh3!?-/+) 9...dc4-+ (9...hg5?! 10.hg5 Re8 11.gf6 Nf6 12.cd5+=) 10.Bc4 Ne5 (10...hg5?! 11.hg5 Re8 12.Qb3=) 11.Be5 Be5 12.Nc3 Bc3 (12...Qe7 13.Nh3-+) 13.dc3 Qd1 14.Rd1 hg5 15.hg5 Bf5?? (better 15...Ne8 16.Bd5 Nd6-/+) 16.gf6+- gf6 (16...c6 17.Rd4+-) 17.Rd5 (17.Bd5!? Rab8+-) 17...Bg6+/- 18.Rd7 c6 (18...Rfd8!? 19.Rc7 Rac8 20.Rc8 Rc8+=) 19.Rb7+- cb5 20.ab5 (20.Bb5 a6 21.Be2 Rfb8+-) 20...Rac8 (20...Rfc8 21.Bd5 Rc3 22.Rh4+/-) 21.Be2 (21.Bf1!? Rc3 22.Ra7 Rc1 23.Kd2+=) 21...Rc3+/- 22.Kd2 (22.Ra7?! Rc1 23.Bd1 Rd8=) 22...Rfc8 23.Ra1 (23.Ra7?! Rc2 24.Ke1 Rc1 25.Bd1 Rb1=) 23...Rc2 24.Ke1 Rc1 25.Rc1 Rc1 26.Kd2 Ra1 27.Bc4 f5 28.f3 ef3 (28...Kg7 29.Kc3+/-) 29.gf3 a5?? (29...f4 30.ef4 Kg7 31.Rc7+/-) 30.Rb6 (better 30.ba6 Bh5 31.a7 Bf3 32.Rf7+-) 30...Kg7+/- 31.Ra6 a4 (31...f4!?+/-) 32.b6+- Rb1 33.Kc2 (33.Ra4?! Rb6 34.Bd5 Rb5+=) 33...Rb4 34.Kc3 Rb1 35.f4 (better 35.Bd5 f4 36.ef4+-) 35...Rc1? (better 35...Bh5 36.Bd3 Rb3 37.Kd4 Bd1+/-) 36.Kd4+- Rb1 37.Kc5 (better 37.Bd5 Rd1 38.Kc5 Rc1 39.Kd6+-) 37...a3 (37...Bh5+-) 38.Ra3 Kf6 39.Ra6 Ke7 40.Bb5 (better 40.Ra7 Kf6 41.b7 Rb7 42.Rb7+-) 40...Rc1 41.Kd5 Rd1 42.Kc6 Rc1 43.Kb7 Rb1 (43...Bh5 44.Ka7 Rc5 45.Ba4+-) 44.Ra5 (44.Bc6 Bh5 45.Kc7 Be2+-) 44...Kd6 (44...Bh5+-) 45.Ka7 Bh5 (45...Rc1+-) 46.b7 Rb5 47.Rb5 Bf3 (47...Kc7 48.b8Q Kc6 49.Qe8 Kd6 50.Rb6 Kd5 51.Qc6) 48.b8Q Ke6 (48...Ke7 49.Re5 Kd7 50.Kb6 Be4 51.Qc7) 49.Rb6 (49.Rb6 Bc6 50.Qe8 Kf6 51.Qc6 Ke7 52.Qd6 Ke8 53.Rb8; 49.Re5 Kd7 50.Kb6 Be4 51.Qc7) 1-0. chessbit (1950) - Gfetahi (1905), Rated Rapid game, lichess.org, 2020.

4.a4 Ne7 5.e3 c5 6.Ne2 0-0 7.Ng3 (7.g3 Bg4 8.Bg2 Nd7=+) 7...f5 8.c4 (8.a5!?-/+) 8...f4-+ 9.ef4 (9.Ne2 d4-+ (9...dc4?! 10.Nec3=)) 9...ef4 10.Ne2 Nf5 (better 10...d4 11.Na3 Ng6-+) 11.Nec3? (better 11.cd5 Re8 12.Qc2-/+) 11...Qe8 (11...Re8 12.Ne2-+) 12.Be2 (12.Qe2 Qg6 13.Qd3 Re8 14.Ne2 d4-+) 12...f3 13.0-0 (13.gf3 Nh4 14.h3 (14.Nd5?? Nf3 15.Kf1 Bh3; 14.cd5?? Nf3 15.Kf1 Bh3) 14...Nf3 15.Kf1 Nh2 16.Rh2 Bh2 17.Kg2-+) 13...Qh5 14.h3 Nd4 15.Bd3 Bh3! 16.g3 (16.gh3 Qg5 Mate attack) 16...Bg2 17.Qf3 (17.Bh7 Qh7 18.Qf3 Qh1) 17…Qh1 0-1. Bushwacker (1865) - charlburyman (2580), ChessWorld.net, 2008.

4.a4 Bg4 5.h3 Bh5 6.g4 Bg6 7.Nf3 Nd7 8.Bg2 Ngf6 9.Nc3 (9.d3 0-0=+) 9...d4-/+ 10.Na2 Nd5 11.Nh2 (11.Nd4 Nf4 (worse 11...ed4 12.Bd5 Nc5 13.Bg2+=) 12.Bb7 ed4=+) 11...c6-/+ 12.e3 Qf6 (12...N7b6 13.bc6 bc6 14.Nc1-+) 13.Nf3 c5 (13...Be4 14.0-0 d3 15.bc6 bc6 16.cd3 Bd3 17.Re1-/+) 14.Ng1 (better 14.Nd4!? N5b6 15.Nf5 Na4 16.Qb1 Bf5 17.gf5 Qf5 18.Bb7+=) 14...e4-/+ 15.Ne2 Be5 (15...N5b6 16.ed4 Na4 17.Bc3-/+) 16.ed4 (better 16.0-0!?=+) 16...cd4-/+ 17.Rb1? (17.c3 Nc5 18.0-0 d3-+) 17...N7b6 (17...d3 18.cd3 Nc5 19.0-0 Bb2 20.de4-/+) 18.a5 Nc4 19.0-0 (19.Bc1-+) 19...Nb2 (19...Na5?! 20.d3 Nf4 21.de4-+) 20.Rb2 d3 21.Nec3 (21.cd3 Bb2 22.de4-+) 21...Nc3 (21...Qf4 22.Re1 Qh2 23.Kf1 Nf4 24.Qf3 ef3 25.Ra1 fg2 26.Ke1 g1Q) 22.Nc3-/+ Bc3 23.dc3 Qc3 24.Rb3 Qc2 25.Qc2 dc2 26.Rc1 (26.Rc3 h5-/+) 26...Rc8 27.Re3 (27.Rb2 e3! 28.fe3 Rd8 29.Rbc2 Bc2 30.Rc2 Ke7 31.Bb7 Rd6=+) 27...0-0 28.Be4 Rfd8 29.Kh2 (better 29.Kg2!?-/+) 29...Be4-+ 30.Re4 f5 31.gf5?? (better 31.Re2 Rd5 32.Rec2 Rc2 33.Rc2 Rb5 34.Rc7-/+) 31...Rd1-+ 32.Re1 Re1 33.Re1 c1Q 34.Rc1 Rc1 35.Kg2 (35.a6 Rb1 36.Kg3 Rb5-+) 35...Rc5 36.b6 ab6 37.ab6 Rf5 38.Kg3 Rf6 39.f4 Rb6 40.h4 Rf6 41.Kf3 b5 42.Ke4 b4 43.f5 b3 44.Kd3 b2 (better 44...Rb6!? 45.Kd4-+) 45.Kc2 Rf5 (45...Rb6 46.Kb1 h5 47.f6 gf6 48.Kc2 b1Q 49.Kc3 Qc1 50.Kd3 Rb4 51.Ke2 Qc4 52.Kf3 Rb3 53.Kg2 Qe2 54.Kg1 Rb1) 46.Kb2 Rh5 47.Kc3 Rh4 48.Kd3 Rf4 49.Ke3 Rf6 50.Ke4 h5 51.Ke5 h4 52.Ke4 h3 53.Ke5 h2 54.Ke4 (54.Kd5 h1Q 55.Kd4 Rf4 56.Kc5 Qc1 57.Kd5 Qc4 58.Ke5 Re4 59.Kf5 Qe6 60.Kg5 Qg4) 54...h1Q 55.Ke5 (55.Kd4 Qg1 56.Kd3 Qg4 57.Kd2 Rf2 58.Kd3 Rf3 59.Kd2 Qg2 60.Ke1 Rf1) 55...Qh5 (55...Qd1 56.Ke4 Rf3 57.Ke5 Qd3 58.Ke6 Re3) 56.Ke4 (56.Kd4 Rf4 57.Ke3 Qf3 58.Kd2 Re4 59.Kc1 Qf2 60.Kd1 Re1) 56...Rg6 (56...Qg4 57.Kd5 Qg5 58.Kc4 Rf4 59.Kd3 Qg3 60.Ke2 Rf2 61.Kd1 Qg1) 57.Kf4 (57.Kd3 Rg3 58.Kd4 Rg4 59.Kd3 Qh3 60.Ke2 Rg2 61.Ke1 Qh1) 57...Rg4 58.Kf3 (58.Ke3 Qh3 59.Ke2 Rg2 60.Ke1 Qh1) 58…Qh3 (58...Qh3 59.Ke2 Rg2 60.Ke1 Qh1) 0-1. chessbit (1915) - theZANG (2005), Rated Rapid game, lichess.org, 2019.

4.Bc3 d4 5.Ba5–/+.

4.Bc3 Nf6 5.a3 (5.Nf3 d4 6.Ba5 b6–+) 5...0-0 6.h3 (6.Nf3 Nbd7–/+) 6...Re8 (6...d4 7.Bb4–/+) 7.h4 (7.Nf3 Bf5–/+) 7...Bf5 (7...d4 8.Bb4–+) 8.h5 (8.Nf3 Nbd7–/+) 8...Nbd7 (8...h6 9.Nf3–+) 9.h6–/+ g6 10.d3 (10.Nf3 Ne4–/+) 10...Nh5 (10...a6 11.ba6 Ra6 12.e4–+) 11.Rh5 (11.e3 d4 12.g4 Bg4 13.Qg4=+) 11...gh5–+ 12.e3 Qg5 13.Nf3 Qh6 14.Nh4 Bg4 15.Be2 Nf6 16.f3? Bd7 17.Bd2 Qg5 18.g3 Qg3 19.Kf1 Bh3 20.Ng2 Qg2 21.Ke1 Qg3 0–1. solidsteel – abetone, Live Game Caissa's Web, 2006.

4.Nc3 Be6 5.a4 a6 6.e3 Nf6 7.d4 (7.Nf3 c5=+) 7...0-0 (7...e4 8.Ba3–/+) 8.Nf3 (8.de5 Be5 9.Nf3 Bg4=+) 8...ed4 (8...e4 9.Ne5–/+) 9.Nd4=+ ab5 10.Ndb5 (10.ab5 Ra1 11.Ba1 c5 12.bc6 bc6=+) 10...Bb4 11.Be2 (better 11.Bd3!?=+) 11...c6–+ 12.Nd4? (better 12.Ba3 Ba5 13.0-0–+) 12...Ne4 13.Qd3 Nd7 (better 13...Qa5–+) 14.0-0 Ndc5 15.Ne6 Nd3 16.Nd8 Nb2 (16...Rfd8?! 17.Bd3 Nc3 18.Bc3 Bc3 19.Rab1=+) 17.Ne4 de4 (17...Rfd8!? 18.c3 de4 19.cb4 Na4–/+) 18.Nb7=+ Rfb8 (18...Na4 19.Rab1 Nc3 20.Rb4 Ne2 21.Kh1=+) 19.Rfb1= c5 (better 19...Be7!? 20.Rb2 Bf6=) 20.Rb2 (20.Nd6 Na4 21.Ne4 Nc3 22.Ra8 Ra8 23.Nc3 Bc3+–) 20…Bc3+= (20...Bc3 21.Rab1 Bb2 22.Nc5 Rc8 23.Ne4 Be5+=). hamiltonharris (1835) – bobby fissure (1950), ChessWorld.net, 2018.

4.c4 Ne7 5.cd5 Nd5 6.Nc3 Nb6 7.e3 Bd7 8.a4 Be6 9.Ne4 N6d7 10.Nf3 Be7 11.Ne5 (11.Be5? Ne5 12.Ne5 Qd5 13.Nf7 Bf7–+) 11...Ne5 12.Be5 Qd5 (better is 12...0-0!? 13.Qc2 c6+/–) 13.Bg7+– Qe4? (better is 13...Rg8 14.Nc3 Qd8+–) 14.Bh8 f6 15.Qh5 Bf7 16.Qf3 Qe5 (16...Qf3 17.gf3 Nd7 18.Bd3+–) 17.d4 Qd5 18.Qd5 Bd5 19.Bg7 Nd7 20.Bh6 Be6 21.f3 0-0-0 22.Be2 Bb4 23.Kf2 f5 24.Bf4 Nf6 25.Rhc1 Bd6 26.Bd6 Rd6 27.Bc4 Bc4 28.Rc4 Kb8 29.Rac1 Rd7 30.Rc5 Nd5 31.Rd5! Rd5 32.Rc5 Rc5 (32...Rd7 33.Rf5 a6 34.ba6+–) 33.dc5 Kc8 34.Kg3 Kd7 35.Kf4 Ke6 36.e4 (better is 36.Kg5 f4 37.e4 Kf7+–) 36...fe4 37.Ke4 h5 (37...c6 38.bc6 bc6 39.g4+–) 38.g4 hg4 39.fg4 Kf6 40.h4 c6 41.bc6 bc6 42.g5 Kg6 43.Ke5 Kf7 44.Kd6 (better is 44.h5 a6 45.a5 Kg7+–) 44...a5 45.Kc6 Ke7 46.Kb7 Ke8 47.c6 (47.c6 Kd8 48.c7 Ke8 49.c8Q Kf7 50.Qf5 Ke8 51.Kc7 Ke7 52.g6 Ke8 53.Qf7) 1–0. Pruvost,Alain (1620) – Paris,Pierre_Julien, 9th Open, La Fere FRA, 2010.

4.e3 d4 5.ed4+= ed4 6.Bd4 (6.Nf3 Nf6=) 6...Nf6 7.Nf3 0-0 8.Be2 (8.Nc3 a6=) 8...a6 9.Nc3 (9.0-0 ab5 10.Bb5 Nc6 11.Bc6 bc6=) 9...ab5 10.Nb5 (10.Bb5 Nc6 11.Bc6 bc6=) 10...Nc6 11.Bb2 Be7 (11...Re8 12.0-0=) 12.0-0+= Re8 13.Ne5 (13.d4 Nd5+=) 13...Ne5 14.Be5 Nd5 15.Bf3 Bf6 (15...c6 16.c4 Nb4 17.Nc7=) 16.d4= Be5 (16...Bd7!? 17.a4 Ra4 18.Ra4 Bb5+/–) 17.de5+/– (17...Re5 18.Qd4+/–) 1–0. Benassi,Aspasio – Ruberg,Mathias, 2000.

4.e3 Nd7 (--> 3.Bb2 Nd7 4.e3 Bd6).

4.e4 de4–/+ 5.d3 (5.Nc3 Nf6–+) 5...ed3 (5...Nf6 6.Nc3 Bf5 7.de4 Ne4 8.Qf3–/+) 6.Bd3 Nf6 7.Nf3 0-0 (7...e4 8.Qe2 Bf5 9.0-0–+) 8.Nbd2 (8.Ne5 Re8 9.f4 Nbd7–/+) 8...Re8 (8...Bg4 9.0-0–/+) 9.0-0 Bg4 10.Ne4 Nbd7 (10...a6 11.h3 Ne4 12.Be4 Bf3 13.Qf3 ab5 14.Qd3=+) 11.h3 Bh5 12.Qe2 Nc5 13.Rfd1 (13.Nc5 Bc5 14.Rad1 Bd4–/+) 13...Nfe4 14.Be4 Qf6 15.g4 (15.Bd5 Rad8–/+) 15...Ne4–+ 16.Qe4 Bg6 17.Qe2 (17.Qb7 Bc2 18.g5 Qf5–+) 17...Qf4 (17...a6 18.g5 Qf5 19.c4–+) 18.Bc1 Qe4 19.Qe4 Be4 20.Ne1 a6 (21.b6 Rad8–+) 0–1. Dubleumortier,Christian – Schwertel,Gottfried, corr 3GMM–39, 1996.

4.Nf3 c5 5.Ne5 Qf6 (5...Nf6!?+=) 6.Nc4+/– d4 7.e3 Bd7 (7...Be7 8.Be2+/–) 8.Nc3 (8.Nd6 Qd6 9.Qf3 de3 10.Bg7 ed2 11.Nd2 Qe7 12.Kd1 a6 13.Bh8 ab5 14.Bb5 Bb5+–) 8...dc3 9.Bc3 Qg6 10.Bd3 (10.Nd6!? Qd6 11.Bg7 c4+–) 10...Qg2 11.Nd6 Ke7 12.Be4 Qg4 (12...Qg5 13.Bb7 Kd6 14.Ba8+–) 13.Bf3 (better is 13.Qg4!? Bg4 14.Bg7 Nd7 15.Bh8 Kd6+–) 13...Qe6 (13...Qg6 14.Bb7 Kd6 15.Qf3+–) 14.Nb7 (< 14.Bg7 Kd6 15.Bh8 Kc7 16.Bb7 Kb7 17.Qf3 Nc6+–) 14...Bb5 (14...Nf6 15.Nc5 Qc4 16.Ba8 Qc5+–) 15.Bg7 Qc4 16.Na5 (16...Qa4 17.Ba8 Qa5 18.Bh8+–) 1–0. Taulien,Hans_Juergen – Bock,Michael, remoteschach.de, 2002.

4.Nf3 d4 (--> 3.Bb2 d4 4.Nf3 Bd6).

4.Nf3 e4?? 5.Bg7 f6 6.Bh8 ef3 7.e3 fg2 8.Qh5 Ke7 9.Qh7 Ke8 (9...Ke6 10.Bg2 Qf8+-) 10.Qg8 (10.Qg8 Kd7 11.Qd8 Kd8 12.Bf6 Ke8 13.Bg2+-) 1-0. WG_ Anonymous – Anonymous, lichess.org, 2021.

4.Nf3 Be6 5.Be5 Be5 6.Ne5 Nf6 7.e3 0-0 8.Be2 Qd6 9.f4 c6 10.0-0 c5 11.Nc3 Nbd7 12.d4 cd4 (12...Rac8 13.Rb1+=) 13.Qd4+/- b6 (better 13...Rfc8!?+/-) 14.Nc6 Rfc8? (better 14...Nb8 15.Nb4 a5 16.Nbd5 Bd5+-) 15.f5 1-0. DEFFM – GuestQLSC, freechess.org, 2021.

4.f4 Nd7 5.fe5 Ne5 6.Nf3 Nf6?? (better is 6...Qe7 7.Ne5 Be5 8.Be5 Qe5–/+) 7.Ne5 Be5 8.Be5 c6 9.bc6 bc6 10.e3 0-0 11.d4 (11.Be2 Re8 12.Bb2 Rb8+–) 11...Ne4 12.Nd2 Qa5 13.Bd3 Nc3 (13...Bg4 14.Qc1 Qc3+–) 14.0-0 (better is 14.Qh5 f5 15.0-0+–) 14…Nd1–+ (14...Nd1 15.Nb3 Qc3 16.Rad1 Re8–+) 0–1. Jokmin,Alex – Losev,Vyacheslav, RN–2010-0-00307, 2010.

4.g3 c6 5.a4 Be6 6.e3 Nf6 7.Bg2 Nbd7 8.Ne2 0-0 9.0-0 Nb6 10.d3 Qd7 11.Nbc3 Bh3 12.f4 Bg2 13.Kg2 d4 14.ed4 ed4 15.Nd4 Bc5 16.bc6?? (16.Nb3 Bb4+=) 16...bc6?? (better is 16...Qd4!? 17.cb7 Rae8–/+) 17.Nce2 (17.Nb3!? Be7 18.f5+=) 17...Nfd5 18.Qd2 Rfe8 19.Rf3 Qg4 (better is 19...Rab8!?=) 20.h3 (20.Nc6?? Re2 21.Qe2 Nf4 22.Rf4 Qe2 23.Kh1 Nd5–+) 20...Qd7 21.f5 f6 (21...Rab8 22.a5 Na4 23.Ba3+=) 22.Ne6 (22.a5 Bd4 23.Nd4 Nc8+/–) 22...Bd6 23.c4 Bb4 24.Qc1 Nc7 25.N2f4 Ne6 26.fe6 Qd6 27.d4 Nc8 28.c5 Qc7 29.Qc4 a5 30.e7 Kh8+= 31.d5 cd5 32.Nd5 Qc5 33.Qc5 Bc5 34.Nc7 Ne7 35.Na8 Ra8 36.Re1 Nd5 37.Re6 h6 38.Rc6 Bb4 39.Rd3 Ne7 40.Rc7 Re8 41.Rdd7 Nf5 42.g4 Ne3? 43.Kf3 Nf1 44.Rg7 Re3?? 45.Kg2 (45...Re2 46.Kf1 Rb2 47.Rgd7 Rb1 48.Kg2 Rb2 49.Kf3+–; better is 45.Kf2 Bc5 46.Rgd7+–) 1–0. MasterofDisaster – maky, Live Game Caissa's Web, 2004.

4.g3 Bd7 5.a4 Nf6 6.Bg2 c6 7.Nf3 cb5 (7...Qe7!?–/+) 8.Ne5 ba4 9.Nc3?? (better is 9.Nd7 Nbd7 10.Nc3=) 9...Be5–+ 10.0-0 Nc6 11.f4 Bc3 12.Bc3 d4 13.Bc6 (13.Bb2–+) 13...Bc6 (< 13...bc6 14.Bd4 Bh3 15.Bf6 Qf6 16.Rf2–+; < 13...dc3 14.Bd7 Qd7 15.dc3–+) 14.Bb4 (14.Bb2 0-0–+) 14...Qd5 15.Rf3 a5 16.Ba3 b5 17.c3 dc3 18.dc3 (18.Re3 Ne4 19.dc3 Qd1 20.Rd1 Rd8–+) 18...Qd1 19.Rd1 Bf3 20.ef3 Rd8 21.Re1 (21.Rb1 Rd5–+) 21...Kd7 22.Re7 Kc6 23.Rf7 Rd7 24.Rd7 Kd7 25.g4 Nd5 26.Bb2 Rc8 27.f5 Nc3 28.Kf1 b4 29.h4 a3 30.Ba1 b3 31.Ke1 b2 32.Bb2 ab2 33.Kf2 b1Q 34.Kg3 Rc4 35.g5 Qg1 (36.Kh3 Qf1 37.Kg3 Ne2 38.Kh2 Rh4#) 0–1. MasterofDisaster – ethan2, Live Game Caissa's Web, 2004.

4.g3 Ne7 5.f4 (5.Nf3 e4 6.Nd4 0-0–/+) 5...Nd7 (5...ef4 6.gf4 Nf5 7.Nf3 Bf4 8.e3–/+) 6.Nf3 e4 7.Bg7 (better is 7.Nd4!?–/+) 7...Rg8–+ 8.Be5 ef3 9.Bd6 cd6 (9...fe2 10.Qe2 cd6 11.Bg2–+) 10.e3 Nb6 11.Qf3 Be6 (11...Bf5 12.Bd3–/+) 12.Nc3 Qc7 13.Bg2 Nc4 14.a4 (14.Qe2 0-0-0–/+) 14...0-0-0 (14...Rc8!? 15.Ne2 Bf5–/+) 15.a5 Kb8 (15...Qc5 16.h3–/+) 16.b6=+ ab6 17.ab6 (17.a6 ba6 18.Ra6 Kc8–/+) 17...Qb6 18.Rb1 Qc6 19.0-0?? (better is 19.Nb5=+) 19...Nd2–+ 20.Qe2 Nf1 (better is 20...Qc3 21.Kh1–+) 21.Nb5 (21.Qe1 Ng3 22.hg3 Nf5–+) 21...Ne3 (better is 21...Ng3 22.hg3 Rg3 23.Nd4–+) 22.Nd4 Qc5 23.Qe3 Nf5 24.Qf2 Qd4 25.Qd4 Nd4 26.Rd1 Nc6 27.Bd5 Bd5 28.Rd5 Rge8 29.c3 Re3 30.Rf5 Rc3 31.Rf7 Re8 32.Kg2 Re2 33.Kh3 Rcc2 34.Kg4 Rh2 35.f5 Rc4 36.Kg5 Ne5 37.Rf8 Ka7 38.Kf6 Rg4 39.Ke6 Rd2 40.f6 Rg3 41.f7 Rf3 42.Ke7 Rf7 43.Rf7 Nf7 44.Kf7 0–1. MasterofDisaster – martianul, Live Game Caissa's Web, 2004.

4.g3 f5 5.f4 d4 (5...Qe7!? 6.e3 Nd7=+) 6.fe5 Be5 7.Nf3 Qf6 (7...Bf6 8.c3=) 8.c3 (8.e3 Nd7 9.Ne5 Ne5 10.Bd4 Be6+/–) 8...dc3 (8...d3 9.ed3 (< 9.Ne5 Qe5 10.Qb3 Qe4=) 9...Ne7 10.Na3+=) 9.Nc3+/– Ne7 10.Rb1 (10.Ne5 Qe5 11.Bg2 Qd6+/–) 10...0-0 11.Ne5 Qe5 12.Na4 (better is 12.Bg2 c6 13.Qa4+/–) 12...Qe4=+ 13.Rg1 Nd7 14.Bg2 Qe6 (14...Qg4 15.e3 Qg6 16.Rc1=) 15.e3 (15.Qb3 Qb3 16.ab3 a6+=) 15...Rb8 (15...Qa2 16.Bd4=+) 16.Bd4 (16.Qb3 Qb3 17.ab3 a6+/–) 16...b6 (16...Qh6 17.h3=) 17.Nc3 (17.Qb3 Qb3 18.Rb3 Bb7+=) 17...Nc5 (17...Kh8 18.Kf2 Bb7 19.Bb7 Rb7 20.Qf3=) 18.Qe2 (18.Qc2 Bb7=) 18...Bb7 19.Bb7 (19.Bc5 bc5 20.Bf1 Qh6=+) 19...Rb7 (19...Nb7 20.Kf2–/+) 20.a4 Rbb8 21.g4 f4 22.g5?? f3–+ 23.Qf1 f2 24.Ke2 fg1Q 25.Qg1 Nf5 26.Kd1 Rbd8 27.g6 h6 28.Bc5 bc5 29.Kc2 Nd6 30.Rb2 Nc4 31.Rb3 Rd2 32.Kb1 Qf5 33.e4 Qf1 34.Qf1 Rf1 (35.Nd1 Rfd1#) 0–1. MasterofDisaster – bla2, Live Game Caissa's Web, 2004.

4.g3 Nf6 5.Bg2 Qe7 6.e3 Nbd7 7.Ne2 Nb6 8.d3 a6 9.ba6 Ra6 10.Nbc3 0-0 11.0-0 Bg4 12.Qc1 Qd7 (13.Qd2 Bh3–/+) 0–1. Reussner,Hans_Dieter – Binder,Klaus, F0012 DESC, 2001.

4.h3 Nf6 5.a4 0-0 6.d3 Qe7 7.Nf3 Re8 (7...e4 8.de4 de4 9.Nd4-/+) 8.g3 (8.e3 d4 9.ed4 Bb4 10.c3 ed4 11.Be2 dc3 12.Bc3 a6-/+) 8...Nbd7 (8...e4!? 9.Nd4 e3-+) 9.Bg2-/+ a6 10.0-0 ab5 11.ab5 Ra1 12.Ba1 d4 (12...c6 13.c4=+) 13.Nh2 (13.c3 dc3 14.Nc3 Nc5=) 13…Bb4 0-1. Konfucious (1885) - unjournakamura (2405), Hourly Crazyhouse Arena, lichess.org, 2020.

4.a4 a6

5.e3 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 Qa5 9.Bc3= Qc7 10.Nf3 (10.d4 e4=) 10...Nf6 (10...Nd7=) 11.Ng5 (11.c5 Bc5 12.Be5+= (worse 12.Ne5 Ne4 13.Nf3 0-0=+)) 11...h6=+ 12.Nf3 e4 13.Nd4 Bh2 (13...dc4 14.Bc4 c5=) 14.Be2 (better 14.b6 Qd6 15.c5 Qc5 16.Rh2 Qb6 17.Ne2+=) 14...Be5-/+ 15.Na3 (15.bc6 Nc6 16.Nc6 bc6 17.Be5 Qe5-/+) 15...c5 16.b6 (better 16.Nb3!?-/+) 16...Qb6-+ 17.Ndb5 (better 17.Nb3 Bc3 18.dc3-+) 17...Bc3 (better 17...d4 18.Bb2 Nc6-+) 18.dc3-/+ Be6 (18...0-0 19.cd5 Rd8 20.c4-/+) 19.cd5=+ Bd5 (better 19...Nd5 20.Bc4 Nc7 21.Nc7 Qc7 22.Be6 fe6=+) 20.c4? (better 20.Bc4 Bc4 21.Nc4=) 20...Bc6 (20...Be6 21.Qd6 Qa5 22.Kf1-+) 21.Nd6-/+ Kf8 22.Ndb5 (22.Nab5 Qa5 23.Kf1 Qd8-/+) 22...Nbd7 23.Bg4 (23.0-0 g6-+) 23...Ng4 (23...Qa5!? 24.Kf1 Bb5 25.cb5 Qa3 26.Bd7-+) 24.Qg4 Qa5 25.Kf1 (25.Ke2 h5! 26.Qg5 Bb5 27.cb5 f6-+) 25...Qd8 (25...Bb5 26.cb5 Qa3 27.Qd7 Qd3 28.Qd3 ed3 29.Rh4-+) 26.g3 (26.Qf5 Ne5! 27.Ke2 Qd3 28.Ke1 f6 29.Qc8 Kf7 30.Qh8 Bb5-+) 26...Nf6 (26...Ne5 27.Qh5 Nd3 28.Qh4-+) 27.Qe2 Bb5 (27...Qd3!? 28.Ke1-+) 28.Nb5 Qd3 29.Qd3 ed3 30.f3 Ke7 31.Kf2 (31.Ke1 Rd8 32.e4 Nd7-+) 31...Rd8 (31...Nd7 32.Rd1 Ne5 33.f4 Nc4 34.Rd3-+) 32.Rd1 g6 33.e4 Nh5 34.Nc7 Rd4 35.Nd5 Kd6 36.Ne3? (36.g4!? Ng7 37.Ke3 Rc4 38.Rd3-+) 36...Ng7 (36...Nf6 37.Rh1-+) 37.Ke1 b6 (37...Ne6 38.Kd2-+) 38.Kd2 f5 (better 38...Nh5 39.Rg1 Ke6-+) 39.Ra1?? (better 39.Rb1 b5 40.Rb5=) 39...fe4-+ 40.fe4 Re4 (better 40...Nh5 41.Rb1 Ng3 42.Rb6 Ke5 43.Ng4 Kf4-+) 41.Kd3 Rd4 42.Ke2 (42.Kc3 Ne8-+) 42...Nf5 43.Ra6? (43.Nf5 gf5 44.Rh1-+) 43...Kc6 (43...Re4 44.Kd2 Ne3 45.Rb6 Ke5 46.Rg6 Nc4 47.Kc3-+) 44.Ra8? (44.Nf5 gf5 45.Ra4-+) 44...Ne3 45.Ke3 Rc4 46.Rc8 Kb5 47.Rg8 Rg4 48.Rh8 (48.Kf3 h5-+) 48...h5 (48...Rg3 49.Kf2 Rh3 50.Rg8-+) 49.Kf3 Kb4 50.Re8 b5 51.Re1 c4 52.Rb1 Kc5 53.Re1 c3 54.Re5 Kc4 55.Re8 b4 56.Rc8 (56.Ke2 Kb3 57.Re3 Kb2-+) 56...Kb3 57.Kf2 (57.Re8 c2 58.Re1 Kb2-+) 57...Kb2 (better 57...c2!? 58.Kg2 Rc4 59.Re8-+) 58.Rb8 b3 59.Ke2 c2 60.Rc8 c1Q 61.Rc1 Kc1 62.Kf3 b2 (62...b2 63.Ke2 b1Q 64.Kf2 Qc2 65.Ke1 Rd4 66.Kf1 Rd1) 0-1. chessbit (1940) - Basquel (1925), Rated Rapid game, lichess.org, 2020.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.c4 c6 9.Nf3 Nbd7 10.Nc3 0-0 11.Ng5 h6 12.h4 (better 12.Nf3-/+) 12...Nh7?? (better 12...Nb6!?-/+) 13.Nf3 (13.Nh7!? Kh7 14.cd5+=) 13...Ndf6 14.cd5 (14.d4 ed4 15.Nd4 Bg4=+) 14...cd5 15.Be2 Bf5 16.g3 (16.0-0 Re8=+) 16...Qc7 17.0-0? (better 17.Qb3-/+) 17...Ne4?? (17...Bh3!?-+) 18.Ne4?? (better 18.Nd5 Qd7 19.d4 ed4 20.Qd4+- (20.Nd4?! Bh3=; 20.Bd4?! Bh3=)) 18...Be4 (18...de4!? 19.Ne1 Rd8-/+) 19.d3=+ Bf5 20.e4 (20.Qb3!?=+) 20...de4-/+ 21.de4 Be4 22.Qb3 (22.Bd3 Bd3 23.Qd3 Re8-/+) 22...Nf6 23.Bb2 Rc8 (better 23...Bd5!? 24.Qe3 Qc2 25.Be5 Ng4-/+) 24.Rc1=+ Qb8 25.Rc8 Qc8 26.Ne5 Be5 (26...Bd5 27.Qd1 Qf5 28.Qd3=+) 27.Be5= Ng4 (27...Ng4 28.Qc3 Qf5+/-). chessbit (1960) - Peter3rightchess (1940), Rated Rapid game, lichess.org, 2020.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 Nbd7 9.c4 c6 10.h4 Qa5 11.Bc3= Qa2 12.d3 (12.c5 Bc7=) 12...e4 13.Nd4 cb5 (13...Nc5!? 14.de4 Nce4-/+) 14.Nb5= Bb8 15.N5a3 (15.cd5 Qd5 16.Bf6 Nf6=) 15...Nc5 (15...0-0 16.Qe2 Qb3 17.Qb2 Qb2 18.Bb2 ed3 19.Bd3=) 16.d4 (16.Bf6!? gf6 17.d4+=) 16...Nb3 17.c5 0-0 18.Be2 Bd7 19.0-0 (19.Qc2 Qc2 20.Nc2 Nc1=) 19...Bc7 (19...Ba4 20.Bb5 Bb5 21.Nb5=) 20.Nb5+= Bb5 21.Bb5 Ra8 22.c6 (better 22.Re1 Na1 23.Re2+=) 22...bc6-/+ 23.Bc6 Rb8 24.g3?? (24.Nd2 Qa3 25.Nb3 Qd6-/+ (25...Qb3?! 26.Qb3 Rb3 27.Ra1=)) 24...Ba5 (better 24...Qa6 25.Bd5 Nd5-+) 25.g4 (25.Re1!? Bd8 26.Qe2-/+) 25...Rb6 26.g5 Rc6 27.Ba5 Na5 (27...Qa5?! 28.Qb3 Nd7 29.Qb7-/+) 28.gf6 Rf6 29.Nc3 (better 29.Qh5 Rg6 30.Kh2-+) 29...Qb2?? (better 29...Rg6 30.Kh2 Qc4-+) 30.Nd5 (30.Qb1 Rb6 31.Qb2 Rb2+=) 30...Rg6 31.Kh2 (31.Kh1 Qb7 32.Qb1 Rd6 33.Qb7 Nb7+=) 31...Qb8=+ 32.Kh3?? (better 32.Nf4=+) 32...Qc8-+ 33.Kh2 Qd8 34.Qh5 (34.Kh3 Qd5 35.f4 Qf5 36.Kh2 Rg4-+) 34...Rh6 35.Qh6 gh6 36.Rg1 Kf8 37.Nf4 Qh4 38.Kg2 (38.Nh3 Nc4 39.Rg3 Qh5-+) 38...Nc4 (better 38...Nc6 39.Nh3-+) 39.Kf1 (39.Ra1 Qg4 40.Kh2 Nd2-+) 39...Nd2 (better 39...Qh2 40.Rg3 Qh1 41.Ke2-+) 40.Ke2 Nf3 (better 40...Nb3 41.d5-+) 41.Ra1 (41.Rd1 Qg4 42.Kf1 Nh2 43.Ke1 Qc8-+) 41...Qg5 (41...Nd4 42.ed4 Qg4 43.Kf1 Qf4 44.Ke1-+) 42.Ra8 (42.d5 h5 43.Rd1 h4-+) 42...Kg7 (better 42...Ke7 43.Kd1 Qg1 44.Kc2 Qf2 45.Kb1 Nd2 46.Ka2 Nf1 47.Kb1 Ne3 48.Ra7 Kf6 49.Nh5 Kg5-+) 43.Ra1 (43.d5-+) 43...Qb5 44.Kd1 Qb3 45.Ke2 Qb2 (45...Qb2 46.Kf1 Qa1 47.Kg2 Qg1 48.Kh3 f5 49.Ne6 Kf6 50.d5 Qg4) 0-1. chessbit (1900) - RIPPO (1910), Rated Rapid game, lichess.org, 2019.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 e4 9.Nd4 Bd7 10.Be2 Be5 11.c3 (11.Ne6 Be6 12.Be5 c5=) 11...Qe7 12.Bb2 0-0 13.Ba3 Bd6 14.Bd6 Qd6 15.0-0 c5 16.bc6 Nc6 17.Nb5 Qc7?? (better 17...Qe5=+) 18.Nc7+- 1-0. Jimito100 (2005) - polistirolo99 (2025), Rated Bullet game, lichess.org, 2020.

4.a4 c5

5.e3 Nf6 6.Be2 Bf5 (6...0-0 7.d3-/+) 7.Nf3 Nbd7 8.0-0 Qc7 9.d3 (9.h3 0-0-/+) 9...e4 10.de4 de4 11.Ne1 (better 11.Nh4!? Be6 12.g3-/+) 11...Bh2-+ 12.Kh1 Bd6 (12...Be5 13.Nc3-+) 13.c4 (13.f4 h5 14.Nc3 Ng4 15.Bg4 hg4 (15...Bg4?! 16.Qd5 Nf6 17.Qg5-+) 16.Kg1 Nf6-+) 13...0-0 14.g4 Bg6 (better 14...Be5 15.Nc3 Be6-+) 15.f3?? (better 15.g5 Ne8 16.Nc3-+) 15...ef3 16.Bf3 Rfe8 (better 16...Ne5 17.Nd2-+) 17.Qd2?? (17.Nc3-+) 17...Rad8 (17...Ne5 18.Be5 Be5 19.Nc3-+) 18.Na3 (18.Nc3 Ne5 19.Nd5 Nd5 (19...Nf3?! 20.Qc3 Qd7 21.Nf3-+) 20.Bd5 Ng4-+) 18...Ne5 (18...Ne4!? 19.Qg2 Ng3 20.Kg1 Nf1 21.Kf1 Re3 22.Rd1-+) 19.Qg2 Nf3 20.Nf3 Re3 21.Rae1 Rde8 (21...Re1!? 22.Re1 Ne4 23.Nd2-+) 22.Nc2 (22.Bf6 Re1 23.Re1 Re1 24.Ne1 gf6-+) 22...Bc2 (22...Re1 23.Re1 Re1 24.Nce1-+) 23.Qc2 (23.Re3 Re3 24.Qc2 Ne4-+) 23...Re1 24.Re1 Re1 25.Ne1 Ng4 26.Qg2 (26.Qe2 Qd7-+) 26...h5 (26...Qe7 27.Nf3 Qe6 28.Qc2-+) 27.Qh3 0-1. Bushwacker (1925) - therussian (2060), ChessWorld.net, 2016.

5.e3 Nf6 6.Nf3 Qc7 7.c4=+ e4 8.Ng5 (better 8.Bf6!? gf6 9.Ng1=+) 8...Be5-/+ 9.Nc3 Bg4 (better 9...h6!? 10.Nh3 d4 11.ed4 cd4-+) 10.Be2 (10.f3 h6 11.fg4 hg5 12.cd5 Bh2-/+) 10...Be2=+ 11.Qe2 0-0 (11...h6 12.Nh3=+) 12.cd5= Nbd7 (12...h6 13.Nh3=) 13.Rb1 (13.d3 ed3 14.Qd3=) 13...Bh2 (better 13...Bc3!? 14.dc3 Qe5=) 14.Nge4 (14.g3 Bg3 15.Nce4 Be5+-) 14...Be5 15.f4 Ne4 16.Ne4 (16.fe5 Ng3 17.d6 Qd8-/+) 16...Bb2 17.Rb2 Rfe8 18.Qh5 h6 19.Qg4?? (better 19.Qf5+/-) 19...Re4-+ 20.Rh6 (20.Kf1 Nf6 21.Qg3 Kf8-+) 20...Rae8 (better 20...Ne5 21.Qf5 Nd3 22.Ke2 gh6 23.Kd3 Ra4 24.Ke2-+) 21.Rh3 Qf4 22.Qd7? (22.Qh5 Kf8 23.a5-+) 22...R4e7 23.Rf3 (23.Qe7 Re7 24.Rc2 Qb4-+) 23...Qe5 (better 23...Qh4 24.g3 Qh1 25.Rf1 Qf1 26.Kf1 Rd7 27.Ke2-+) 24.d4 (24.Qf5 Qb2 25.d6 Qc1 26.Ke2 Qc4 27.Kf2-+) 24...Qd4 (24...Rd7?! 25.de5 Re5 26.Rd2-/+) 25.Rd2 (25.Qe8 Re8 26.Re2 Qa4 27.Rd2-+) 25...Qa1 (25...Re3 26.Re3 Qe3 27.Kd1 Qb3 28.Rc2 Qb1 29.Kd2 Qe1 30.Kd3 Qe3 31.Kc4 Re4) 26.Rd1 Qd1!! (26...Rd7?! 27.Ra1 Rd5 28.Ke2-/+) 27.Kd1 Rd7 28.Kc2 (28.Ke2 Rd5 29.Rf2 Re4-+) 28...Rd5 29.Kc3 Red8 (29...Re4 30.a5-+) 30.e4 Rd4 31.e5 (31.Rf5 b6-+) 31...Ra4 32.g3 (32.Rh3-+) 32...Ra3 33.Kc4 Rf3 (33...Rf3 34.b6 a6 35.g4 Rd4 36.Kc5 Rff4 37.g5 Kf8 38.e6 fe6 39.g6 Rd5) 0-1. chessbit (1980) - Estolog (2065), Rated Rapid game, lichess.org, 2020.

4.a4 Bd7

5.e3 Nf6 6.c4 c6 7.Nc3 0-0=+ 8.Nge2 (8.cd5 cd5 9.Nf3 Bf5=+) 8...dc4-/+ 9.Ng3 Be6 10.Be2 Nd5 (10...Nbd7 11.bc6 bc6 12.Nce4 Ne4 13.Ne4-/+) 11.0-0 Nb4 12.Nce4 Bc7 (better 12...Be7!? 13.f4 f5-/+) 13.Ba3+= a5 14.Nc5 Qc8 (14...cb5 15.ab5 Nd7 16.Ne6 (worse 16.Nb7 Qb8 17.Bf3 Ra7 18.Bb4 ab4 19.Ra7 Qa7-/+) 16...fe6 17.Bc4+=) 15.Ne6+/- Qe6 16.Ne4 (16.Rc1!?+/-) 16...cb5 17.ab5 Nd7 18.Qb1 f5? (18...Qd5 19.Nc3 Qe6+=) 19.Nc3?? (19.Bb4 ab4 A) 20.Qb4?! Nb6 (20...fe4?? 21.Bc4 Kf7 22.Be6 Ke6 23.Ra8 Ra8 24.Qe4+-) 21.Ra8 Ra8+=; B) 20.Ra8 Ra8 21.Ng5+-) 19...Bd6 20.Na4 (better 20.e4!? f4 21.Bb4 ab4 22.Ra8 Ra8 23.Nd5=) 20...e4-+ 21.f3 (better 21.Bb2-+) 21...Qh6?? (better 21...ef3!? 22.Bf3 Ne5 23.Bb7 Rab8-+) 22.f4? (better 22.Bc4!? Kh8 23.f4=) 22...Qe6-/+ 23.Nb2 (23.Qb2 Nd3 24.Bd3 cd3 25.Bd6 Qd6-/+) 23...Nb6 24.Rc1 Rfc8 25.Rc3 Qd5 26.Qf1? (better 26.Qc1 Be7 27.Nc4=) 26...Qd2-+ 27.Rc4 (27.Nd1 Qd5-+) 27...Qe3 28.Kh1 Nc4 29.Nc4 Qf4 30.Nd6 Qd6 31.Qf5 Qd4 32.Rd1 Qe3 (better 32...Nd3 33.Rf1 Kh8-+) 33.Qe6? (33.Bb2 Rc7 34.Qe6 Kh8 35.Qd6=) 33...Kh8-+ 34.Bg4 (34.Bb2 Rg8 35.Qe7-+) 34...Re8 (34...Nd3 35.h3 Nf2 36.Kh2 Nd1 37.Bd6-+) 35.Qd7 (35.Bc1 Qc5 36.Qd6 Qd6 37.Rd6-+) 35...Qa3 (better 35...Nd3!? 36.h3 Nf2 37.Kh2 Nd1 38.Qd1 Qa3 39.Qd5-+) 36.h3 (36.Be2 Nd3! 37.Rf1 Rf8-+) 36...Nd3 37.Bh5 (37.Kh2 Qe7 38.Qe7 Re7-+) 37...Rf8 (better 37...Re5!? 38.Be2 Nf2 39.Kh2 Nd1 40.Qd1-+) 38.Qb7 Nf2 (38...Nf2 39.Kg1 Nd1 40.Qe4 Qg3 41.Bf7 Ne3 42.Qf3 Qe1 43.Kh2 Nf1 44.Qf1 Qf1 45.Bb3 Qf4 46.Kh1 Rae8 47.Be6 Re6 48.g3 Qg3 49.b6 Rf1) 0-1. Bushwacker (1950) - TheShrink (2150), ChessWorld.net, 2018.

5.e3 Nf6 6.Nf3 Qe7 7.h4 a6 8.c4 ab5 9.cb5 h5 (9...c5 10.d3-/+) 10.Ng5 e4 11.Be2 g6 (11...Bg4 12.0-0=+) 12.Nc3 Bg4?? (better 12...0-0=) 13.Nd5!+- Be2 (13...Nd5 14.Bh8 Pinning (14.Bh8 Deflection; 14.Bh8 Clearance)) 14.Qe2 (14.Nf6 Qf6 15.Bf6 Bd1 16.Ne4 Rf8 17.Nd6 cd6 18.Kd1 Nd7+-) 14...Nd5 15.Bh8 Nd7 (15...Nb4 16.Qc4 Nd3 17.Ke2+-) 16.Qc4 Ne5 (16...N5f6+-) 17.Qd5 Nd3 (17...0-0-0 18.Be5 Be5 19.Qe4+-) 18.Kf1 (better 18.Ke2 0-0-0 19.Qe4 Nf2 20.Kf2 Rh8+-) 18...0-0-0 19.Nf7 (19.Ne4?! Be5 20.Qc4 Bh8+-) 19...Nf2 (19...Rd7 20.Nd6 Rd6 21.Qg8 Rd8+-) 20.Nd8 Qd8 (20...Nh1 21.Nb7 Ng3 22.Kg1+-) 21.Kf2 (better 21.Qe6 Kb8 22.Bf6+-) 21...Bg3 22.Ke2 (better 22.Kg3 Qd5 23.Rhf1+-) 22...Qd5= 23.Rhf1?? (better 23.Bc3=) 23...Qd3-+ 24.Kd1 Qf1 25.Kc2 Qc4 (25...Qd3 26.Kc1-+) 26.Kd1 Bd6 (26...Bh4 27.Bc3-+) 27.b6 (27.Bc3 Be7-+) 27...c6 (27...Qf1 28.Kc2 Qd3 29.Kc1 Ba3 30.Ra3 Qa3 31.Bb2 Qa4 32.bc7 Qc4 33.Bc3 Qf1 34.Kc2 Qg2 35.Be5-+) 28.a5 (28.Bc3 Qb3 29.Ke2 Qb6-+) 28...Bb4 29.a6 Qd3 30.Ra2 (30.ab7 Kb7 31.Kc1 Qd2 32.Kb1 Qg2-+) 30...ba6 (30...Qb1 31.Ke2 Qa2 32.Kf1 Bd2 33.ab7 Kb7 34.g3 Be3 35.Bb2 Qb2 36.Ke1 Qd2 37.Kf1 Qf2) 31.b7 (31.Rb2 c5 32.Kc1 Kb7-+) 31...Kb7 32.Rb2 Qf1 (32...c5 33.Bc3 a5 34.Ke1-+) 33.Kc2 Qc4 (33...c5 34.Bc3 a5 35.Kb3-+) 34.Kd1 (34.Bc3 a5 35.Kb1 c5-+) 34...a5 35.Ke1 (35.Bc3 Ka6 36.Ke1 Bc3-+) 35...Qc1 36.Ke2 Qg1 37.Bc3 Qg2 38.Kd1 Qf1 (38...c5 39.Kc2-+) 39.Kc2 c5 40.Bb4 (40.Kb3-+) 40...cb4 41.Kb3 Qd3 42.Ka2 Kb6 43.Ka1 (43.Rb3 Qc4 44.d3 ed3 45.Kb2 d2 46.Rc3 Qc3 47.Kb1 d1Q 48.Ka2 Qdc2) 43...Kb5 44.Ka2 (44.Rb4 ab4 45.Kb2 b3 46.Ka3 Qc2 47.d4 Qa2) 44...a4 45.Ka1 a3 (45...b3 46.Ra2 ba2 47.Ka2 Qc2 48.Ka1 a3 49.d4 Qb2) 46.Rb1 (46.Rc2 Qc2 47.d4 Qb2) 46...Qd2 47.Rb3 Qc1 (47...Kc4 48.Rb1 b3 49.Rb3 Kb3 50.Kb1 Qd1) 48.Rb1 Qe3 (48...Qc3 49.Ka2 Ka4 50.Rb4 Kb4 51.Kb1 Qb2) 49.Ka2 (49.Rd1 Qc3 50.Kb1 Qb2) 49...Qd2 (49...Ka4 50.Rb4 Kb4 51.Kb1 Kb3 52.Ka1 Qe1) 50.Ka1 Qc3 (50...e3 51.Rb3 e2 52.Rb4 Kb4 53.Kb1 e1Q) 51.Ka2 Qc2 (51...Kc4 52.Rc1 b3 53.Ka3 Qc1 54.Ka4 Qa1) 52.Ka1 b3 (52...g5 53.hg5 b3 54.Rb3 Qb3 55.g6 Qb2) 53.Rb3-+ Kc4 (53...Qb3?!) 54.Rb1 Qb2! 55.Rb2 ab2 56.Kb2 Kd3 57.Kc1 Ke2 58.Kc2 Kf2 59.Kd2 e3 60.Kd1 e2 61.Kc2 e1Q (61...e1Q 62.Kb3 Ke3 63.Kc4 Qh4 64.Kb5 Kd4 65.Kb6 Qf6 66.Kb7 Kc5 67.Kb8 Qe7 68.Kc8 Kc6 69.Kb8 Qb7) 0-1. chessbit (1900) - SYAL (1940), Rated Rapid game, lichess.org, 2020.

4.a4 Be6

5.e3 Nd7 6.Nf3 f6 7.h4 (7.Ba3 Ba3 8.Ra3 Ne7=+) 7...Ne7-/+ 8.c4 (8.Be2 c5-/+) 8...c6 (8...dc4 9.Na3-/+) 9.Nc3 (9.bc6 bc6 10.cd5 Nd5=+) 9...0-0 (9...dc4 10.Ne4 Nc5 11.Nc5 Bc5-/+) 10.Nh2? (10.bc6 bc6 11.cd5 cd5=+) 10...e4 (10...dc4 11.Ne4 Bb4 12.Bc3 Bc3 13.dc3 cb5 14.ab5-+) 11.Ne2? (11.cd5 cd5 12.d3 Qa5-/+) 11...Ne5 (11...dc4!? 12.Nd4 Bd5 13.bc6 Nc6 14.Nc6-+) 12.Nf4-/+ Bf7 (12...Nc4 13.Ne6 Qc8 14.Nf8 Nb2 15.Qb3 Qf8 16.bc6 bc6 17.Qb2+-) 13.Ng4 (13.bc6 N5c6 14.Qg4 Bf4 15.Qf4-/+) 13...N7g6 (13...Nc4 14.Bc4 dc4 15.Nf6 gf6 16.Qg4 Bg6 17.h5-/+) 14.Nh5 (better 14.Ng6 Bg6 15.Ne5 fe5 16.h5-/+) 14...Nd3?? (better 14...dc4 15.bc6 bc6 (worse 15...Nc6 16.Nhf6 Kh8 17.Ne4+=) 16.Nhf6 gf6-/+) 15.Bd3+/- ed3 16.Nhf6! Kh8 (16...gf6 17.Nf6 Double attack) 17.Nh5 Ne5? (17...Rg8 18.Nh6 Qd7 19.bc6 bc6 20.Ng8 Kg8 21.Bg7 Qe7+-) 18.Ne5 (18.Be5 Bh5 19.Bd6 Qd6 20.cd5 Qg6 21.dc6 bc6-+ (worse 21...Bg4 22.h5 Qg5 23.f4 Rf4 24.cb7-+)) 18...Be5 19.Be5 Bh5 20.Qh5 dc4 21.Qg4 (21.bc6 bc6 22.Bd4 a6+-) 21...Rf7 (21...Qe7 22.Qg5 Qf7+-) 22.Qc4 (22.Qc4 Qe7 23.Bd4+-) 1-0. chessbit (1965) - Catch22Sqd (2030), Rated Rapid game, lichess.org, 2020.

5.e3 Nf6 6.Nf3 Nbd7 7.h4 0-0 8.Ng5 h6 (better 8...Bf5-/+) 9.g3? (better 9.Ne6 fe6 10.Nc3=+) 9...hg5-+ 10.hg5 Nh7 11.Qh5 Bf5 12.Bd3 (12.f4 a6-+ (12...Bc2 13.d3 Re8 14.Qh7 Kf8 15.Nc3+=)) 12...e4 13.Bg7 (13.Be2 Qg5 14.a5-+) 13...Kg7 (worse 13...ed3 14.Bf8 Bg6 15.Qh3 dc2 16.Nc3 Kf8 17.Nd5-+) 14.Qh6 Kh8 (14...Kg8 15.g6 Bg6 16.Be2-+) 15.g4 (15.Be2 Be7-+) 15...Bg6 (15...ed3?? 16.gf5 Bh2 17.Rh2 Ndf6 18.gf6 dc2 19.Qh7) 16.Be2 Ne5 (16...Kg8 17.Nc3-+) 17.Nc3 c6 18.bc6 (18.a5 a6 19.bc6 bc6-+) 18...bc6 19.a5 (19.Rb1 Kg8-+) 19...Rg8 (better 19...Kg8-+) 20.Bb5 (20.a6-+) 20...Nf3 21.Ke2 Bf8 22.Qh3 Bg7 (better 22...cb5 23.Nb5 Qg5 24.Rab1-+) 23.Bc6 Rc8 24.Bd5 (24.Bb7 Bc3 25.dc3 Rc3 26.Kf1-+) 24...Bc3 25.dc3 Qd5 26.Rad1 (26.Kf1-+) 26...Qc4 (26...Qb5 27.Rd3 Nfg5 28.Qh7 Bh7 29.f4 ed3 30.Kf2 Ne4 31.Kf3 Rg4 32.Rh3 Qh5 33.Rh5 Rg3) 27.Rd3 ed3 (better 27...Nfg5 28.Qh7 Nh7 29.Rhd1-+) 28.Kf3 Qe4 (better 28...dc2!? 29.Rc1-+) 29.Kg3 dc2 30.Rc1 Rc3 31.Qg2 Qe5 32.Kh4 Qg5 33.Kg3 Kg7 (33...Qe5 34.Kf3 Be4 35.Ke2 Qb5 36.Ke1 Bg2 37.Kd2 Rd3 38.Ke1 Qa5 39.Ke2 Qd2) 34.Qf3 Rc4 (34...Nf6 35.Re1 Be4 36.Rc1 Bf3 37.a6 Qg4 38.Kh2 Rh8) 35.Qe2 Qe5 36.f4 Qe4 (36...Rf4 37.Kg2 Ng5 38.Rh1 Be4 39.Qf3 Bf3 40.Kg3 Rg4 41.Kf2 Rg2 42.Ke1 c1Q) 37.Qf2 f5 0-1. chessbit (1900) - Phantom00 (1945), Rated Blitz game, lichess.org, 2021.

5.e3 Nf6 6.Nf3 Nbd7 7.h4 c6 8.Nc3 a6 (8...c5 9.Ng5=+) 9.Ng5 Bg4 (9...Bf5 10.Be2 h6 11.Nf3-/+) 10.Be2 (10.f3 Be6=+) 10...Be2 11.Qe2 ab5 12.ab5 Ra1 13.Ba1 Qa8 (13...0-0 14.0-0-/+) 14.0-0=+ 0-0 15.Qd1 (15.Bb2 Nb6=+) 15...e4 (15...Qa3 16.Qe2-/+) 16.Ne2 (16.d3 ed3 17.cd3 Qa5=+) 16...h6-/+ 17.Nh3 cb5 18.f4 (18.Nd4 Qa5-/+) 18...ef3 19.Rf3 (19.Rf3 Ne5 Decoy; 19.gf3 Ne5 Decoy) 19...Ne4 (19...Qd8 20.Nd4=+) 20.Rf5 (20.d3 Nef6=+) 20...b6 21.Nef4 g6 22.Rd5 Bf4 (22...Qc6!?=) 23.Nf4+= (worse 23.Rd7 Nc5 24.Nf4 Nd7=+) 23...g5?? (better 23...Qc6+=) 24.hg5 hg5 (24...Rd8 25.gh6 Kh7 26.Bd4+-) 25.Rd7 Qc6 (25...Rd8 26.Rd8 Qd8+-) 26.Qh5 (26.Qh5 Qf6 27.Bf6 Nf6 28.Qg5 Kh8 29.Qf6 Kh7 30.Rf7 Rf7 31.Qf7 Kh6 32.Qg6) 1-0. chessbit (1915) - panjen (1985), Rated Rapid game, lichess.org, 2020.

4.a4 f5

5.e3 Nf6 6.Nf3 e4 7.Nd4 0-0 8.Be2 c6 9.0-0 c5 10.Nb3 b6 11.c4 (11.f3=) 11...d4 (better 11...Be6!? 12.d4 dc4 13.dc5 bc5=+) 12.ed4+= cd4 13.Nd4 (13.Bd4!? Qc7 14.h3+=) 13...Be5= 14.Ne6 Be6 (better 14...Bh2!? 15.Kh2 Be6=) 15.Be5+/- Qe7 (15...Nbd7 16.Bd6 Re8 17.d4 ed3 18.Bd3+=) 16.Nc3 (16.d4!?+/-) 16...Nbd7 17.Qb3?? (better 17.Bf6 Qf6 18.d4+/-) 17...Ne5-+ 18.Nd5 Bd5 19.cd5 Rad8 20.h3 (20.d4 ed3 21.Bd3 Nd3 (21...Rd5?! 22.Bf5 Kh8 23.Rfe1-+) 22.d6 Qf7 23.Qd3 Ne4-+) 20...Qd6 (20...Rd5 21.Rad1-+) 21.f4 (21.d4 ed3 22.Bd3 Ne4 23.Be4 fe4-+) 21...ef3 (better 21...Nf7 22.Rac1-+) 22.Rf3 (22.Bf3 Nf3 23.Rf3 Qd5 24.Qd5 Rd5 25.Rc1-+) 22...Nf3 23.gf3 (23.Bf3 Ne4 24.d3-+) 23...Qg3 24.Kf1 Qh3 25.Ke1 Qg3 26.Kd1 Rfe8 (26...Qg1 27.Kc2 Qa1 28.Bc4-+) 27.Bc4 (27.d6 Kh8 28.Rc1 Re2 29.Ke2 Qg2 30.Kd3 Qf3 31.Kc2 Rc8 32.Kb2 Qb3 33.Kb3 Rc1-+) 27...Kh8 (better 27...Qe1 28.Kc2 Qa1-+) 28.Kc2 Qf4 29.Rd1 (29.Rc1 Rc8 30.Kb1 Qd2-+) 29...Rc8 30.Kb2 (30.d3 Nd5 31.Kb1 Ne3-+) 30...Qc4 (30...Rc4!? 31.Ka3-+) 31.Qc4 Rc4 0-1. biktimiroff (1930) - nudeoldman (1955), Hourly Bullet Arena, lichess.org, 2020.

5.e3 Nf6 6.Nf3 e4 7.Ng5 f4-/+ 8.ef4 Bf4 9.Nh3 (9.h4!?-/+) 9...Bh3-+ 10.gh3 Nbd7 11.Rg1 Rg8 12.c4 (12.a5 a6-/+) 12...Ne5 13.c5?? (better 13.Be5 Be5 14.Nc3-+) 13...Nf3 14.Ke2 Ng1 15.Ke1 Nf3 16.Ke2 Bh2 17.Bg2 Qd7 (17...Be5 18.Nc3 Nd4 19.Kf1-+) 18.Bf3 (18.d3 Qf5 19.de4 de4-+) 18...ef3 19.Kd3 (19.Kf3 Qh3 20.Ke2 Nh5-+) 19...Qf5 20.Kc3 Be5 (better 20...Ne4!? 21.Kb3 Nc5 22.Ka2-+) 21.Kb3 Qd3 22.Bc3 (22.Ka2 Bb2 23.Kb2 Qd4 24.Nc3 Qb4 25.Qb3 Qc5 26.Re1 Kd8-+) 22...d4 23.Qc2 Qc2 (23...dc3 24.Qd3 cd2 25.Nc3=+) 24.Kc2 dc3 25.Nc3 (25.dc3 Ne4 26.Nd2 Bc3-+) 25...Bc3 (25...0-0-0 26.Re1 Bd4 27.Nd1-+) 26.Kc3 (26.dc3 0-0-0 27.Re1 Rde8-+) 26...0-0-0 27.Re1 Rge8 28.Re3 (28.Re8 Re8 29.d3 Re2-+) 28...Ne4 (better 28...Nd5 29.Kc2 Ne3 30.de3 Re3 31.Kc1 Rc3 32.Kb2 Rc5 33.Kb3 Rd3 34.Kb2-+) 29.Kb3 Nd2 30.Kc3 Re3 31.fe3 (31.Kc2 Re4 32.Kc1 Rc4 33.Kb2 Rd3 34.Ka1 Rc2 35.a5 Ra3) 31…f2 (31...f2 32.e4 f1Q 33.c6 Qh3 34.Kb2 Qb3 35.Kc1 Qb1) 0-1. chessbit (1910) - aleoenoch (1940), Rated Rapid game, lichess.org, 2020.

5.Nf3 Qe7 6.d4 e4 7.Ne5 Nf6 8.e3 0-0 9.Be2 Be6 10.Bh5 Nh5 11.Qh5 Be5 12.de5 Nd7 13.0-0 Qf7 14.Qf7 Rf7 15.Bd4 g5 16.Ra3 c5 17.bc6 bc6 18.a5 c5 19.Bc3 Rb8 20.Rb3 c4 21.Rb4 Rb4 22.Bb4 Ne5 23.Nc3 f4 24.ef4 gf4 25.Bd6 Ng6 26.Rb1 Rd7 27.Rb8 Kg7 28.Bb4 Bf5 29.a6 d4 30.Nb5 d3 31.Rb7 dc2 32.Rd7 Bd7 33.Ba3 Bb5 34.Kf1 c3 35.Ke1 Nh4 0–1. hamiltonharris (1895) – drink1966 (1965), ChessWorld.net, 2020.

4.a4 Bf5

5.e3 Nf6 6.Nf3 0-0 7.Ne5 Be5 8.Be5+= Qe7 (8...Nbd7 9.Bb2+/-) 9.Bb2+/- Nbd7? (9...Re8 10.Be2+/-) 10.Be2 (10.Ba3 Qe6 11.Bf8 Rf8+-) 10...Nc5? (10...c5 11.0-0+/-) 11.0-0 (better 11.Ba3!? Nfd7 12.d4+-) 11...Rfe8 12.Bf3 c6 13.Nc3 Nce4 14.d3 Nc3 15.Bc3 Qd7 (15...Rad8!?+/-) 16.Bf6+- gf6 17.Bh5 (17.c4 Rac8+-) 17...cb5+/- 18.ab5 Qb5 19.Qf3 Qd7 20.Ra5 Red8 21.e4 (21.Rfa1+/-) 21...de4 (21...Be6!?+/-) 22.Qf5+- ed3?? (22...Qf5 23.Rf5 ed3 24.cd3 Rd3 25.Bf3+-) 23.cd3 (better 23.Qf6 b5 24.Rb5+-) 23...Qd3?? (better 23...Qf5 24.Rf5 Rd3+-) 24.Qf6 b6 (24...Rd7 25.Rg5 Qg6 26.Bg6 (26.Qg6?! hg6 27.Bf3 Kg7+-; worse 26.Rg6 hg6 27.Bd1 Kh7+-) 26...fg6 27.Rd5+-) 25.Rg5 (25.Bf7 Kf8 26.Bd5 Ke8 27.Qf7) 25...Kf8 (25...Qg6+-) 26.Qh8 (26.Qf7) 26...Ke7 27.Re1 (27.Qe5 Kf8 28.Re1 Qe2 29.Qg7 Ke7 30.Qf7 Kd6 31.Rd5 Kc6 32.Rc1 Qc2 33.Rc2) 27...Kd7+- 28.Bg4 Kc7 29.Qe5 (29.Re7 Kc6 30.Qf6 Rd6 31.Bd7 Kc7 32.Bb5 Kc8 33.Rg8 Rd8 34.Qc6 Kb8 35.Rb7) 29...Kb7 30.Bf3 (30.Bf3 Qf3 31.Qe7 Kb8 32.Qd8 Kb7 33.Qd7 Ka6 34.Ra1 Qa3 35.Ra3) 1-0. chessbit (1910) - nassunaameriku (1915), Rated Rapid game, lichess.org, 2019.

5.e3 Nf6 6.Nf3 Nbd7 7.h4 c5 8.c4 e4 9.Ng5 (9.Qc2 0-0-/+ (9...ef3?! 10.Qf5 fg2 11.Bg2=)) 9...h6 10.Nh3 Be5 11.Be5 Ne5 12.cd5 Nd5 13.Nc3 Nb4 14.Nf4 Bg4 (14...0-0 15.a5-/+) 15.Qb1 (15.Qb3 Ned3 16.Bd3 ed3=+) 15...f5 16.Ne6? (better 16.Na2 Nd5 17.Qb3 Nf4 18.ef4=+) 16...Qd6-+ 17.Ng7 (17.Nf4 0-0-0 18.Ra2 g5-+ (18...Na2?! 19.Qa2 g6 20.Nfd5-+)) 17...Kf7 18.Nf5 Bf5 19.Ne4 (19.Qb3 Kg7 20.Be2-+) 19...Nbd3 20.Bd3 Nd3 (20...Qd3?! 21.Nd6 Qd6 22.Qf5 Kg7 23.0-0-/+) 21.Ke2 Be4 22.Qb3 Ke7 23.Qc4 (23.f3 Qg3 24.fe4 Rad8-+) 23...Bh7 (better 23...Qg6 24.g3 Qg4 25.Kf1 Rhf8-+) 24.h5 Rhf8 25.f3 Rad8 26.Ra2 (26.Qh4 Ke8 27.Kf1-+) 26...Qg3 27.Qh4 Qh4 28.Rh4 Nc1 29.Kd1 Na2 30.e4 Nb4 (30...Bg8 31.Rg4-+) 31.Rg4 (31.a5 Nd3-+) 31...Rf7 (31...Rg8 32.Rg8 Bg8 33.a5-+) 32.Ke2 Nd3 33.Rh4 Nf4 34.Ke3 Ng2 35.Ke2 Nf4 (35...Nh4 36.d3 Rf3 37.d4 Rd4 38.Ke1 Re4 39.Kd2 Rf2 40.Kd3 Re5 41.Kc4 Rc2 42.Kb3 Re3) 36.Kd1 Rd3 37.Rh2 Rf3 38.Kc2 Be4 39.Kc1 Nd3 (39...Rf1 40.Kb2 Nd3 41.Ka3 Bd5 42.Re2 Kd6 43.Re1 Re1 44.a5 Ra1) 40.Kd1 (40.Kc2 Ne5 41.d3 Bd3 42.Kb2 Nc4 43.Kb3 Bf5 44.Kc4 Be6 45.Kc5 R3f4 46.Re2 Rc4) 40...Nb4 (40...Rf1 41.Kc2 Rc1 42.Kb3 Bd5 43.Ka3 Ra1) 41.Re2 (41.d3 Rf2 42.Rh3 Rf1 43.Kd2 R7f2 44.Kc3 Rc1 45.Kb3 Bd5 46.Ka3 Ra1) 41...Rf1 42.Re1 Re1 43.Ke1 Bd3 (43...Bd3 44.a5 Rf1) 0-1. chessbit (1930) - sfanelCSS (1925), Rated Rapid game, lichess.org, 2020.

5.e3 Nf6 6.g3 0-0-/+ 7.Bg2 c6 (7...Nbd7!?-/+) 8.Nf3=+ Nbd7 9.0-0 Re8 10.Na3 (10.Nc3 Qa5=+) 10...Rc8 11.d3 cb5 (11...Nc5!? 12.Nb1 Bg4-/+) 12.Nb5=+ Bc5 (12...Bb8 13.Re1=) 13.d4= ed4 14.ed4 (14.Nbd4 Be4=) 14...Bb6 (14...Be7!? 15.Na7 Rc2=+) 15.Nd6= Rc2 (15...Bc2!? 16.Qc1 Bd3 17.Nc8 Bf1 (worse 17...Qc8 18.Qc8 Rc8 19.Rfc1+/-) 18.Qf1 Qc8=) 16.Ne8 (16.Bc1 Bg6 17.Ne8 Qe8+/-) 16...Rb2+= 17.Nf6 (17.Nd6!? Bg6 18.Qc1+=) 17...Nf6= (worse 17...gf6 18.Nh4 Be6 19.Qd3+/-; worse 17...Qf6 18.a5 Bd8 19.Re1+=) 18.Ne5 (18.Qc1 Rb4=) 18...Ne4 (better 18...Rb4 19.Nf3 g6=+) 19.Qh5? (better 19.a5 Ba5 20.Qf3=+) 19...g6-+ 20.Qd1 Rb4 (20...Nc3 21.Qf3 Bd4 22.Nf7 Kf7 23.g4-/+) 21.h4? (better 21.Nf3-/+) 21...Bd4 (better 21...Rd4 22.Qb3 Nd2 23.Qb5 Nf1 24.a5 Ng3 25.ab6-+) 22.Nf3? (22.Nd3 Rb6 23.Nf4 Ba1 24.Qa1-+) 22...Ba1 23.Qa1 Qb6 (better 23...Nf2!? 24.Nd4 Bd3 25.Qe1 Nh3 26.Bh3 Rd4 27.Rf4 Rf4 28.gf4-+) 24.Qe5 Qd6 25.Qe8 Kg7 26.a5 (26.Ng5 Ng5 27.hg5 d4-+) 26...f6 27.Rd1 (27.h5 g5-+) 27...Qc5 28.Rf1 (28.Kh2 Nf2 29.Re1 Ne4-+) 28...Ng3 29.Re1 (29.Ng5 Rh4 30.Rd1 fg5 31.Qe5 Kh6 32.Qg3 d4-+) 29...Ne4 30.Rf1 Qf8 (better 30...Nf2 31.Qd8-+) 31.Qf8 Kf8 32.Ra1 (32.Rc1 Rc4 33.Rb1 Bc8-+) 32...Rb2 (better 32...Ke7!? 33.Rd1 Kd6 34.Nd4-+) 33.Nd4 Nf2 (33...Bd7 34.a6 b6 35.Rc1-+) 34.Nf5 gf5 35.Bd5 Kg7 (better 35...Nh3 36.Kf1 Nf4-+) 36.Bb7?? (better 36.Rc1 Nh3 37.Kh1-+) 36...Nh3 (36...Rb7 37.Kf2 a6 38.Rg1 Kh6 39.Rd1-+) 37.Kf1 Rb7 38.Kg2 (38.Ra4 Ng5! 39.hg5 fg5-+) 38...Nf4 39.Kf3 (39.Kg3 Nd3 40.Ra3 Ne5-+) 39...Nd3 (better 39...Ng6 40.a6 Rb3 41.Ke2-+) 40.Ra3 (40.Rd1 Rb3 41.Ke2 f4 42.Rg1 Kf7-+) 40...Ne5 41.Kf4 (41.Kg2 Rb2 42.Kg3 Rb4-+) 41...Kg6 (41...Rb4!? 42.Kg3-+) 42.h5 (42.Rg3 Kf7 43.Ra3 Rb4 44.Kg3 f4 45.Kh3 h5-+) 42...Kf7 43.Kf5 (43.Ra4 Ke6 44.Ke3 Rb3 45.Ke2 Nc6-+) 43...Rb5 (43...Rb4 44.Rg3 Nc6 45.Rg7 Kg7 46.Ke6 Na5 47.Kf5-+) 44.Ra1 (44.Kf4 Ke6-+) 44...Nc6 (better 44...Rb4 45.Rg1-+) 45.Ke4 (45.Kg4 Ra5 46.Rh1 Ke6-+) 45...Rh5 46.a6 (46.Rc1 Re5 47.Kf4 Na5 48.Rc7 Re7-+) 46…Ra5 (46...Ra5 47.Rc1 Ra6-+) 0-1. Bushwacker (1945) - Pushover (2065), ChessWorld.net, 2014.

4.a4 Nf6

5.e3 c6 6.Be2 0-0 7.g4 (7.Nf3 e4 8.Ne5 Nfd7=+) 7...c5 (7...Nbd7 8.Nc3–+) 8.Nh3 (8.a5 Re8–/+) 8...d4 (8...Ne8 9.f3–/+) 9.c4 (9.0-0 Nd5 10.Na3 Qh4–/+) 9...Ne4 (9...d3!? 10.Bf1 Bg4–+) 10.Qc2 f5 11.Rg1 Qh4 12.Bf1 Ng5 (12...Bc7 13.g5–/+) 13.Ng5 Qg5 14.Na3 (14.Bg2 fg4 15.Bd5 Kh8–/+) 14...fg4 15.0-0-0 (15.Rg2 Nd7–+) 15...Rf2 (15...Nd7 16.Bd3 Nf6 17.Rg2–+) 16.ed4 ed4 17.Rg2 Rg2 18.Bg2 Bh2?? 19.Rf1?? Bf4?? 20.a5?? Bf5–+ 21.Bd5 Kh8 22.Re1 Nd7 23.Be4 Re8 24.Nb1 Qh4 25.Rh1 Qh1! 26.Bh1 Bc2 27.Kc2 b6 28.Bc6 Re7 29.a6 Ne5 30.Bg2 d3 31.Kc3 h5 32.Be4 h4 33.Bd3 h3 34.Bf1 h2 35.Bg2 Nf3 36.Kc2 Re2 37.Bh1 g3 (38.Bf3 g2 39.Be2 h1Q–+; better is 37...Re1!? 38.Nc3 Rh1 39.Ne2 Ne1 40.Kb3–+) 0–1. tschulz – Knight, MySchachOpen, 2005.

5.e3 Be6 6.Nf3 Nbd7 7.c4 dc4 8.Bc4?? (better 8.Qc2-/+) 8...Bc4-+ 9.d3 Be6 10.0-0 0-0 11.Ng5 h6 (better 11...Bg4!? 12.Qd2-+) 12.Ne6 fe6 13.Nd2 Nd5 14.Ne4 Nb4 (better 14...N7f6-+) 15.Qb3 Nd5 16.Ng3?? (16.Qd1 N7f6 17.Qb3-+) 16...Qe7 17.e4 (17.Ne4 a6-+) 17...N5f6 18.f4 (18.Nf5 Qf7 19.Ne3 Nh5-+) 18...ef4 19.Ne2 (19.Nf5 Qf7 20.Nd6 cd6 21.Rf4 e5 22.Qf7 Kf7-+) 19...Kh8 (better 19...Ng4 20.Rf3 Nc5 21.Qa2-+) 20.Nf4 Bf4 21.Rf4 Rae8?? (21...e5 22.Ba3 Qf7 23.Qf7 Rf7 24.Rff1-+) 22.Raf1? (better 22.Ba3!? Nc5 23.Qc4-+) 22...Nh5 23.Rf8 Rf8 24.Rd1?! (24.Rf8 Nf8 25.Ba3-+) 24...Nf4 25.Qc3 (25.d4-+) 25...Ne2 26.Kh1 Nc3 27.Bc3 Qf6! 28.h3 (28.Bf6 Nf6 Combination) 28...Qf1! 29.Rf1 Rf1 30.Kh2 Rc1 31.Bd4 Rd1 32.Ba7 Rd3 33.a5 Ra3 34.b6 cb6 (34...c5!? 35.a6 Ra6 36.Kg3-+) 35.ab6 Rb3 36.e5 (36.h4 Re3-+) 36...Nb6 37.Bb8 Nd7 38.Bd6 Rb5 39.Kg1 Ne5 40.Kf2 Nd3 41.Kf3 Rd5 42.Bg3 (42.Be7 b5-+) 42...b5 43.Ke4 b4 44.Be5 b3 (44...Ne5 45.Ke3 b3 46.g3 b2 47.g4 b1Q 48.Kf2 Rd2 49.Ke3 Qd3 50.Kf4 Ng6) 45.Bc3 (45.Ba1 b2 46.Bb2 Nb2-+) 45...b2 (better 45...Nf2!? 46.Kf4 Rc5 47.Ba1-+) 46.Bb2 Nb2 47.Kf4 Nc4 48.Kg4 Rf5 49.Kh4 Rf8 (49...Ne3 50.g4 Rf3 51.g5 Nf5 52.Kh5 Rh3 53.Kg6 Kg8 54.gh6 Rg3 55.Kh5 g6) 50.g4 e5 (50...Rf3 51.g5 Ne5 52.gh6 gh6 53.Kh5 Rh3) 51.Kg3 e4 52.g5 (52.Kg2 e3 53.Kg3 e2 54.g5 e1Q 55.Kg2 Rf2 56.Kg3 Qe3 57.Kg4 Qg5) 52...e3 53.gh6 (53.Kg2 e2 54.gh6 Ne3 55.Kg3 e1Q 56.Kh2 Qd2 57.Kg3 Qf2) 53...gh6 54.Kh4 (54.Kg4 e2 55.h4 Ne5 56.Kg3 e1Q 57.Kg2 Rf2 58.Kh3 Qe3) 54...e2 55.Kh5 (55.Kg3 e1Q 56.Kh2 Rg8 57.h4 Qh4) 55...e1Q 56.Kh6 (56.h4 Ne5 57.Kh6 Qh4) 56...Qh4 57.Kg6 Qf6 (57...Rf6) 58.Kh5 Qf5 (58...Rg8 59.h4 Qg6) 59.Kh4 Qh7 (59...Qf4 60.Kh5 Rf5 61.Kg6 Ne5) 60.Kg4 (60.Kg3 Qg6 61.Kh2 Rf2 62.Kh1 Qg2) 60...Rg8 (60...Qg6 61.Kh4 Rf4) 61.Kf3 (61.Kf4 Qg6 62.Kf3 Qg2 63.Kf4 Rf8) 61...Qf7 (61...Qf5 62.Ke2 Rg2 63.Ke1 Qb1) 62.Ke4 Re8 (62...Nd2 63.Ke3 Rd8 64.Ke2 Qf3 65.Ke1 Qf1) 63.Kd3 (63.Kd4 Nb2 64.Kc3 Qc4 65.Kb2 Rb8 66.Ka3 Qb3) 63...Qd7 (63...Nb2 64.Kc2 Re2 65.Kb1 Na4 66.Kc1 Qf1) 64.Kc3 Ne5 65.Kb4 (65.Kb2 Qd2 66.Ka3 Rb8 67.Ka4 Qb4) 65...Rc8 (65...Rb8 66.Kc5 Rb5) 66.Ka5 Qb7 67.Ka4 (67.h4 Ra8) 67…Ra8 0-1. Jimito100 (2000) - Na2011 (2060), Rated Bullet game, lichess.org, 2020.

5.h3 0-0 6.Nf3 c6 7.e3 Bf5 8.Be5 Be7 9.c4 Nbd7 10.g4 Be4 11.g5 Ne5 12.Ne5 Bh1 13.gf6 Bf6 14.d4 Be5 15.de5 Qh4 16.cd5 Bd5 17.Nc3 Be6 18.bc6 bc6 19.Qd6 Rfd8 20.Qc5 Bh3 21.Rd1 Rd1 22.Nd1 Bd7 23.a5 Qh1 24.a6 Bh3 25.Qc4 Bf1 26.Qf1 Qf1 27.Kf1 Rb8 28.f4 Rb6 29.Kf2 Ra6 30.Nc3 Ra3 31.Ne4 a5 32.f5 a4 33.e6 Ra2 34.Kf3 a3 35.e7 h6 36.e8Q Kh7 37.Nf6 1–0. hamiltonharris (1900) – Provocateur (2020), ChessWorld.net, 2018.

5.e3 0-0

6.c4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Re8 10.Be2 dc4 11.Bc4 e4 (11...Bg4 12.Qb3 Re7 13.Ng5=+) 12.Nd4 (12.Ng5!? Re7 13.d3 ed3 14.Qd3=) 12...Nbd7 13.0-0 Ne5 14.Be2 Nfg4 15.h3 Qh4 16.hg4?? (better 16.d3 ed3 17.Bg4 Ng4 18.Nf3=+) 16...Nf3!! 17.Nf3 (17.Nf3 ef3 Combination; 17.Bf3 Qh2 Mate attack; 17.gf3 Qh2 Mate attack) 17...ef3 18.g3 (18.Be5 Be5 19.g3 Bg3 20.fg3 Qg3 21.Kh1 Qg2) 18...Bg3 (18...fe2?! 19.gh4 ed1Q 20.Rd1 Bg4 21.Rc1-/+) 19.fg3 Qg3 20.Kh1 Qg2 (20...fe2 21.Qe2 Qh3 22.Kg1+/-) 0-1. Antares_Sco (1935) - Aaron_Whitney (2360), Hourly SuperBlitz Arena, lichess.org, 2016.

6.c4 c6 7.Na3 a6 8.Nf3 ab5 9.cb5 (9.ab5 e4 10.Nd4-/+) 9...c5 (9...e4 10.Nd4 c5 11.Nb3-+) 10.Be2 (10.Be5 Be5 11.Ne5 Re8=+) 10...Qa5 (10...Re8 11.d3-/+) 11.Nb1 (11.Be5 Be5 12.Ne5=+) 11...c4 (better 11...Nbd7-/+) 12.Ne5= Bf5 (12...Re8 13.f4+=) 13.Nf3 Nbd7 14.0-0 Bb4 (14...Qb4 15.Bd4+=) 15.Bc3 (15.Bd4 Rfe8+=) 15...Nb6 (15...Bb1 16.Bb4 (worse 16.Rb1 Bc3 17.dc3 Qc3-/+) 16...Qb4 17.Qb1 Ra4 18.Ra4 Qa4 19.Nd4=+) 16.Nd4 (better 16.Bb4!? Qb4 17.Nc3+=) 16...Bb1= 17.Bb4 (worse 17.Rb1 Bc3 18.dc3 Qc3-/+) 17...Qb4 Increases the pressure on a4 18.Qb1 (18.Rb1 Qa4 19.Qe1 Qa3=) 18...Qb1 (18...Qd2 19.Bd1=+) 19.Rfb1= Na4 20.Rb4 (better 20.Bf3!?=) 20...Nc5-/+ 21.Rbb1 Nfe4 22.Nf3? (better 22.Nf5!? Nd2 23.Rd1-/+) 22...Nb3-+ 23.Ra8 Ra8 24.Rd1 Nd6 (24...Ra2 25.Kf1-+) 25.g3 Nb5 (25...Ra2 26.Bf1-+) 26.d3 0-1. Bushwacker (1925) - DavyGravy (1900), ChessWorld.net, 2019.

6.c4 c6 7.Nf3 Re8 8.Be2 a6 9.0-0 (9.d4 e4 10.Nfd2 dc4 11.Nc4 Bb4 12.Bc3 ab5 13.Bb4 bc4 14.Bc4 Be6 15.Be6 Re6=+) 9...Bf5 (better 9...e4!? 10.Nd4 c5-/+) 10.d4= e4 11.Nfd2 (11.Ne5 ab5 12.ab5 Ra1 13.Ba1 dc4 14.Bc4 Be6=) 11...ab5 (11...Qc7 12.c5 Bh2 13.Kh1 ab5 14.ab5 Ra1 15.Ba1 cb5 16.Nc3=) 12.ab5 Ra1 13.Ba1 cb5 (13...Qc7 14.h3=+) 14.cb5 (14.c5 Bc7=) 14...Nbd7 15.f3 (15.Bb2 Bb8=+) 15...ef3-/+ 16.Nf3 (16.Rf3 Bg4 17.Rf2 Be2 18.Qe2 Qc7-/+) 16...Re3 (16...Ng4 17.Qd2 Ne3 18.Rc1-+) 17.Qd2 Re8 18.Bc3?? (better 18.Nc3-+) 18...Bb1 19.Rb1 Ne4 20.Qd3 Nc3 21.Qc3 Re2 22.Re1 Re1 23.Qe1 Nf6 24.Qb4 (24.Qd2-+) 24...Bb4 25.Ne5 Qc7 26.h3 Bc5! 27.Nf7 (27.dc5 Qc5 Double attack (27...Qe5 Deflection; 27...Qe7 Decoy)) 27...Bd4 28.Kf1 Qc1 (28...Qf4 29.Ke2 Qf2 30.Kd1 Be3 31.Nh6 Bh6 32.g3 Qd2) 29.Ke2 Qe3 30.Kd1 Qd3 (30...Ne4 31.Nh6 gh6 32.Kc2 Qc3 33.Kd1 Qd2) 31.Kc1 Bc3 32.Nd6 (32.Nh6 gh6 33.g4 Qd2 34.Kb1 Qb2) 32...Qd2 33.Kb1 Qb2 0-1. Antares_Sco (1935) - Discepolo (2300), Hourly SuperBlitz Arena, lichess.org, 2016.

6.c4 c6 7.Nf3 Re8 8.Be2 Bg4 9.h3 Bh5 10.cd5 cd5 11.Qb3 Nbd7 12.Qd5?? (better 12.g4 Nc5 13.Qd1=+) 12...Nd5-+ 13.Nh2 (13.0-0 e4 14.Nd4 Be2 15.Ne2 Ne5-+) 13...Be2 14.Ke2 e4 15.Nc3 Nb4 16.f3 (16.Ba3 Qc7 17.f3 Qc4 18.Kd1 Nd5 19.Bd6 Nc3 20.dc3 Qd3 21.Ke1 Qe3 22.Kf1 Qd3 23.Kf2 e3 24.Kg1 Qc3-+) 16...Nd3 (better 16...Bh2 17.Rh2 Qc7 18.Rhh1 Qc4 19.Kf2 Nd3 20.Kg1 Nb2 21.Ne4-+) 17.Ba3 N7c5 (17...Bh2 18.Rh2 Nf6 19.fe4 Ne4 20.Ne4 Re4 21.a5-+) 18.Bc5 Nc5 19.fe4 Ne4 20.Ne4 Re4 21.Nf3 Qe7 22.Rac1 (22.Kf2 Ba3-+) 22...Re8 23.Rc3 f5 (23...Ra4 24.b6-+) 24.Rhc1 f4 (24...Ra4 25.b6-+) 25.Nd4 (25.Rc4 Rc4 26.Rc4 fe3-+) 25…Rd4 (25...Rd4 26.Ke1 Qh4 27.g3 Qg3 28.Kd1 Re3 29.Rc8 Kf7 30.Rf8 Bf8 31.Rc7 Kf6 32.Rc6 bc6 33.Kc2 Rc4 34.Kb2 Rb3 35.Ka2 Ra4) 0-1. Antares_Sco (1895) - FrankLommen (2050), Weekly SuperBlitz Arena, lichess.org, 2016.

6.Ne2 Bf5 7.Ng3 Qd7 (7...Bg6 8.Be2-/+) 8.Be2 c6 (8...Be6 9.0-0=+) 9.c4 (9.0-0 a6=) 9...cb5 (9...Bg6 10.0-0=+) 10.cb5 (10.cd5 b4 (worse 10...Nd5 11.e4 Be6 12.ed5 Bd5 13.Bb5+-) 11.Nf5 Qf5=) 10...Re8 (10...Rc8!? 11.Nf5 Qf5=+) 11.0-0= Bg6 12.Qb3 (12.h4 Rc8=+) 12...b6 (12...h5 13.h4-/+) 13.d3 (13.h4 Qe6 14.h5 Bb1 15.Rfb1 Nbd7=) 13...Qe6=+ 14.Nd2 Nbd7 15.d4 ed4 16.Bd4 Rab8 (16...Nc5 17.Qb2=+) 17.Nf3= Ne5 (17...h6 18.a5=) 18.Nh4 (18.Ng5 Qd7=) 18...Rec8 19.Rac1 Rc1 20.Rc1 Rc8 21.Rc8 Qc8 22.Qb2 Nc4 23.Qc3 Bg3 24.hg3 (worse 24.Ng6 Bf2 (worse 24...hg6 25.hg3 Ne4 26.Qe1+=) 25.Kf2 Qf5 (25...fg6?! 26.Bf6 Qf5 27.Bf3 gf6 28.Qd4=+; 25...hg6?! 26.Bf6 Qf5 27.Ke1 gf6 28.Bc4 dc4 29.Qc4=) 26.Bf3 Ne4 (26...fg6?! 27.Bf6 gf6 28.Qd4=+; 26...Qg6?! 27.Bf6 gf6 28.Bd5 Qf5 29.Bf3=; worse 26...hg6 27.Bf6 gf6 28.g4-/+) 27.Kg1 hg6-/+) 24...Ne4 25.Qc1 Qe6 26.Ng6 hg6 27.Qa1 f6 28.Qb1 Kf7 29.Bd3 f5 (29...g5 30.g4=) 30.Qa1 (30.Be4 de4 31.Qa1 Nd6+/-) 30...Nf6+= 31.Bc4 (31.Qc3 Kg8+=) 31...dc4= 32.a5 Qc8 (32...Qd5!?=) 33.ab6+/- ab6 34.Qa7 (worse 34.Bb6 c3 35.Qa2 Qe6 36.Qa7 Qe7=) 34...Kg8 (34...Nd7 35.f3+=) 35.Qb6 c3 36.Bc3?? (better 36.Qc6 Qc6 37.bc6+/-) 36...Qc3-/+ 37.f3 Kh7 38.Qd4 Qb3 39.b6 Nd5 (better 39...Qb5-/+) 40.Qh4= Kg8 41.Qd8 Kf7 42.Qd7 Kf6 43.b7 Ne3?? (better 43...Qe3 44.Kh2 Qh6 45.Kg1 Qc1 46.Kh2 Qh6 47.Kg1 Qe3 48.Kh2 Qh6=) 44.Qd8 Kf7 45.b8Q (45.b8Q Qb8 46.Qb8+-) 1-0. Bushwacker (1945) - routermeister (1960), ChessWorld.net, 2019.

6.Nf3 a6 7.Ne5 (7.Be5 Be5 8.Ne5 ab5 9.Bb5 Nbd7 10.Nd7 Bd7+=) 7...Nbd7 (7...Re8 8.f4=) 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 Nb6 11.h4 (11.Be2 Re8+=) 11...Bd7 12.Ng5 Re8 (12...Bf5 13.Be2=) 13.Bd3 (13.Bd4 c5 14.bc6 bc6=) 13...Be5 (13...h6 14.Nf3=) 14.Be5+= Re5 15.f4 (15.Be2 Re8+=) 15...Re8 16.Nc3 (16.0-0!?=) 16...d4=+ 17.Nce4 Ne4 18.Be4 f6?? (18...h6 19.Qh5 Qf6 (worse 19...hg5 20.hg5 Kf8 21.Qh8 Ke7 22.Qg7+/-) 20.Bh7 Kh8=+) 19.Bh7+/- Kf8 20.Ne4 Bb5 (20...de3 21.de3 Bb5 22.Qd8 Rd8 23.Nc5+/-) 21.Bg6+- de3 22.Be8 Qe8 23.d3 Nd5 24.0-0 f5 (24...Qe4 25.de4 e2 26.ed5 ef1R (26...ed1R? 27.Rd1 Ke7 28.Kf2+-) 27.Qf1 Bf1 28.Kf1 Ke7+-) 25.Ng5?? (better 25.Ng3+-) 25...e2-+ 26.Qe1 ef1Q 27.Qf1 Qe3 28.Kh2 (28.Qf2 Qf2 29.Kf2 Ba4-+ (worse 29...Nf4 30.g3 Nh5 31.Ne6 Ke7 32.Nc7-+)) 28...Qf4 (28...Bc6!? 29.Qf3-+) 29.Qf4 Nf4 30.g3 Ne2 31.Kg2 Ba4 32.c4 (32.Kf2 Nc3 33.Ne6 Kf7 34.Nc7 Bc2-+) 32...Bc2 33.Ne6 Kf7 34.Nc7 Bd3 35.c5 Be4 36.Kf2 Nd4 37.Ke3 Ne6 (37...Nb3 38.g4-+) 38.Nb5 (38.Ne6 Ke6 39.Kd4 Bc6-+) 38...Nc5 39.Nd6 (39.Kd4 b6-+) 39...Ke6 40.Ne4 (40.Ne8 g6 41.Nc7 Ke5 42.Nb5-+) 40...Ne4 41.g4 fg4 42.Ke4 g3 43.Kf3 g2! 44.Kg2 Kd5 45.Kf2 Kc4 46.Ke2 (46.Ke3 b5 47.Kd2 b4-+) 46...Kc3 47.Kd1 (47.Kf3 b5 48.Kg4 b4-+) 47...b5 48.Kc1 b4 49.Kb1 (49.Kd1-+) 49...b3 50.h5 (50.Kc1 b2 51.Kd1 Kd3 52.Ke1 Ke3 53.Kf1 b1Q 54.Kg2 Qg6 55.Kh3 Kf3 56.h5 Qh5) 50…b2 (50...b2 51.Ka2 Kc2 52.Ka3 b1Q 53.Ka4 Qb6 54.h6 gh6 55.Ka3 Qb3) 0-1. chessbit (1910) - Hillsandwinds (2060), Rated Rapid game, lichess.org, 2020.

6.Nf3 Nbd7 7.d3 e4 8.de4 de4 9.Nd4 Ne5 10.f4?? (better 10.Be2-/+) 10...ef3! 11.Nf3 (11.Nf3 Neg4 Combination; 11.gf3 Nd5 Combination) 11...Qe7 (11...Neg4 12.Bd4 Re8 13.Bc4 Ne3 14.Be3 Re3 15.Kf1-+) 12.Ba3?? (better 12.Ne5 Be5 13.Be5 Qe5 14.Qd4-+) 12...Neg4 (12...Rd8 13.Bd3 Neg4 14.Bd6 Rd6 15.Qe2 Ne3 16.Kd2-+) 13.Bd6 Qe3 (13...cd6 14.Qd4 Ne3 15.Kd2-+) 14.Qe2 (14.Be2 cd6 15.Qd4 Qc1 16.Qd1-+) 14...cd6 (better 14...Qc1 15.Qd1 Re8 16.Be5 Qb2-+ (16...Re5?! 17.Ne5 Qe3 18.Qe2 Qc1 19.Qd1 Qe3 20.Qe2 Qc1 21.Qd1=)) 15.Qe3 Ne3 16.Kd2 Nf1 17.Rf1 Ne4 18.Kd3 Bf5 19.Kd4 (19.Nh4 Nc5 20.Kd2 Be4-/+) 19...Nc5-+ 20.Ng5? (better 20.Kc3-+) 20...Bc2 21.Na3? (21.Ra2 Bg6 22.g3-+) 21...Nb3 22.Kc3 Na1 23.Ra1 Rfc8 (23...Rac8 24.Kb4-+) 24.Kd4 (24.Kb2 Bg6 25.Rd1 Re8-+) 24...Ba4 25.Nc4 Bb5 26.Nd6 Rd8 27.Ngf7 Rd7 28.Kc5 0-1. grandmaster1372 - Lance5500 (2620), lichess.org, 2018.

6.Nf3 Qe7 7.Be2 Nbd7 8.d3 e4 9.Nfd2 Ne5 (9...h6 10.0-0-/+) 10.d4=+ Neg4 (better 10...Ng6=+) 11.f3?? (better 11.h3 Nh2 12.c4=) 11...Ne3-+ 12.Qc1 Ng2 13.Kf2 Nf4 14.fe4 (14.Nc3 e3 15.Kf1 Bh3 16.Ke1 Ng2 17.Kd1 ed2 18.Qd2 Bf4-+) 14...de4 15.c4 (15.Nf1 Ng4 16.Bg4 Bg4 17.Na3-+) 15...e3 16.Ke1 ed2 17.Qd2 Re8 (17...Ne4 18.Nc3 Re8 19.Qe3 Ng2 20.Kd1 Ne3 21.Kc1 Bf4 22.h3 Qb4 23.Ra2 Qb3 24.Bd3 Nc2 25.Kb1 Nc3) 18.Nc3 Bb4 (better 18...Ne4 19.Rg1 Nd2 20.Kd2-+) 19.Kd1 Bc3 20.Bc3 0-1. grandmaster1372 - Lance5500 (2620), lichess.org, 2018.

6.Nf3 Bg4 7.Be2 Nbd7 8.d3 Qe7 9.Nbd2 (9.0-0 h6=+) 9...Rfe8 (9...a6 10.h3 Bf5 11.0-0=+) 10.c4 (10.0-0 Nc5=+) 10...c6 (10...e4 11.de4 de4 12.Nd4-/+) 11.Rc1 (11.h3 Bf3 12.Nf3 e4 13.de4 Bb4 (worse 13...Qe4 14.0-0+=) 14.Kf1 de4=+ (worse 14...Qe4 15.bc6 bc6 16.cd5+=)) 11...Ba3 (11...cb5 12.ab5 e4 13.de4 de4-/+) 12.Qb3? (12.Ba3 Qa3 13.bc6 bc6 14.cd5 cd5=+) 12...Bb4 (12...Bb2 13.Qb2 e4 14.bc6 bc6 15.cd5 ef3 16.gf3-/+) 13.Bc3 (13.cd5!? cd5 14.Bc3 Bc3 15.Qc3-/+) 13...Bc3-+ 14.Rc3 (14.Qc3 e4 15.bc6 bc6 (15...ef3?! 16.cd7 Qd7 17.gf3+=) 16.de4 de4-+) 14...d4! 15.Rc2 (15.ed4 ed4 Combination) 15...de3 16.fe3 e4 17.de4 Ne4 18.Ne4 Qe4 19.Rc3 (better 19.c5-+) 19...c5 (better 19...Nc5!? 20.Qc2 Qc2 21.Rc2 Re3 22.bc6 bc6-+) 20.0-0=+ Nf6 21.h3 (21.Ng5 Qg6 22.Bg4 Ng4=+) 21...Bh5 (21...Bf5 22.Bd1-/+) 22.Nd2=+ Qe5 23.Bh5 Nh5 24.Nf3 Qe7 25.e4 (25.Rd1!?=+) 25...Qe4-/+ 26.Re1 Qg6 (26...Qf4!? 27.Rce3 Nf6-/+) 27.Rce3=+ f6 (27...Red8 28.Ne5 Qg5=+) 28.Qd1 (better 28.Nh4!? Qf7 29.Nf5+=) 28...Re3 29.Re3 Nf4 30.Qd2 Nh3 31.Kh2 Nf4 (31...Ng5 32.Re7 Nf3 33.gf3 Qh5 34.Kg3-/+) 32.Re7 Qg4 33.Rb7 (33.Ng1 Kh8 34.Rb7 Qh4 35.Nh3 Nh3 36.gh3 Qc4 37.Rg7 Kg7 38.Qg2 Kf7 39.Qa8 Qf4 40.Kg2 Qd2 41.Kg3 Qg5 42.Kh2 Qe5 43.Kh1 Qa1 44.Kg2 Qa2 45.Kf3 Qb3 46.Kg2 Qc2 47.Kf3 Qd1 48.Kg2 Qa4 49.Qd5 Kg7 50.Qc5 Qe4 51.Kg1 Qe1 52.Kg2 Qe2 53.Kh1 Qf3 54.Kh2 Qf4 55.Kh1 Qf1 56.Kh2 Kg6-/+) 33...h5 (better 33...Re8 34.Rd7 h5-+) 34.Ne1?? (better 34.Qf2=+) 34...Re8-+ 35.Nf3 Re2 36.Qd8 (36.Rb8 Kh7 37.Qe2 Ne2 38.Re8 Qc4 39.Kh1-+) 36...Kh7 37.Rf7 (37.Rg7 Kg7 38.Qc7 Kg6 39.Ne5 Re5 40.Qh7 Kh7 41.g3 Qh3 42.Kg1 Qg2) 37…Qg2 0-1. myposition (1740) - Lance5500 (2620), lichess.org, 2018.

6.Nf3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Qe2 Nbd7 10.f4 ef3 11.Nf3 Qe7 12.0-0 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Nc3 Rad8 16.Qf3 (16.Rf4 Ne4 17.d4 Nc3=) 16...Ne4 (16...d4 17.Ne2 de3 18.d4-/+) 17.Rad1 (better 17.d4!? Qe7 18.Ne4 de4 19.Qe2=) 17...Nc3-/+ 18.dc3 Qc3 19.Rd5 Rd5 20.Qd5 Qe3 21.Kh1 b6 22.Qb3 Qb3 (22...Qe4 23.Kg1-/+) 23.cb3=+ Rd8 24.Rc1 Rd7 25.h3 Kf8 26.g4 Ke7 27.Kg2 Rd2 28.Kg1 (28.Kf3 Kd7 29.Ke4 Re2 30.Kd4 f6-/+) 28...Kd7 29.Rc3 Rd6 (29...h6 30.Kf1-/+) 30.Kf2 c6 31.bc6 Rc6 32.Rd3 Rd6 33.Rf3? (33.Rc3 Rd5-/+) 33...f6 (better 33...Rf6!? 34.Rf6 gf6-+) 34.Kg3 Rd4 35.g5 (35.Kf2 Kd6-/+) 35...Ke6 36.gf6 gf6 37.Rc3 Rb4 38.Re3 (38.Rc7 Rb3 39.Kg2 a5 40.Rh7 Ke5-/+) 38...Kf5 39.Rf3 Kg6 40.Kf2 a5 41.Kg3 f5 42.Kf2 f4 43.Ke2 Kf5 44.Rc3 Ke4 45.Kf2 Kd4 46.Rf3 Ke5 47.Rc3 Kd4 48.Rf3 Ke4 49.Rc3 Rd4 (better 49...h5-/+) 50.Rc4?? (better 50.Rc6=+) 50...Rc4-+ 51.bc4 Kd4 52.Kf3 Kc4 53.Kf4 b5 54.h4 ba4 55.Kg5 (55.h5 a3 56.Kg5 a4 57.Kf5 a2 58.Ke6 a1Q 59.h6 a3 60.Kf5 Qf1 61.Ke5 a2 62.Ke6 a1Q 63.Ke7 Qe5 64.Kd8 Qf7 65.Kc8 Qfc7) 55...a3 56.Kh6 (56.h5 a4 57.Kh6 a2 58.Kg7 a1Q 59.Kg8 a3 60.Kf7 Qe5 61.Kf8 Qf6 62.Ke8 a2 63.Kd7 a1Q 64.Kc8 Qa7 65.h6 Qf8) 56...a2 57.Kh7 a1Q 58.Kg6 Qg1 59.Kh6 (59.Kf5 a4 60.h5 a3 61.Kf6 a2 62.Kf7 a1Q 63.h6 Qb6 64.h7 Qaf6 65.Kg8 Qbe6) 59...Kd5 60.h5 (60.Kh7 Ke6 61.Kh6 Kf6 62.h5 Qg7) 60...Ke6 61.Kh7 Kf7 62.h6 Qg8 0-1. myposition (1745) - Lance5500 (2620), lichess.org, 2018.

6.Nf3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Ne2 c5 (9...a6 10.Nbc3-/+) 10.Ng3 (10.Bf6 Qf6 (worse 10...gf6 11.Nbc3+/-) 11.Nbc3 Qg5=) 10...Nbd7-/+ 11.Nf5 (11.0-0 Ne5-/+) 11...Be5 12.Be5 Ne5 13.d4 (13.0-0 Qd7 14.Ng3 d4-/+) 13...ed3!-+ 14.cd3 Qd7 (14...g6 15.d4 Nc4 16.Ng3-/+) 15.Ng3-/+ Rfd8 (15...d4 16.e4-/+) 16.0-0 (16.d4 Ng6=+) 16...Rac8 Black prepares the advance c4 (16...c4 17.dc4 dc4 18.Qd7 Rd7 19.Nc3-/+) 17.Nc3 (17.d4 Ng6=+) 17...c4 (17...d4 18.Nce4 Ne4 19.de4 de3 20.fe3-+) 18.d4 Nd3 19.Nge2 Qf5 20.Ra2 Ne4 (20...g6 21.Ng3 Qg5 22.Rd2-/+) 21.Ne4 Qe4 (21...de4 22.Rc2-/+) 22.Ng3 (22.Qd2 Qe7-/+) 22...Qg6 (22...Qe7 23.Ne2-/+) 23.Ne2 Rd6 (23...h5 24.Qd2-/+) 24.Nc1 Nc1 25.Qc1 h5 26.Qa3 h4 27.h3 Re6 28.Re2 Rce8 (28...Qg5 29.Rc1-/+) 29.Qc5=+ Qh5 30.Rfe1 b6 31.Qc7 R6e7 32.Qf4 Re4 33.Qc7 R8e7 34.Qb8 Kh7 35.f3 R4e6 36.e4 (36.Qf4 Rf6 37.Qg4 Qh6=+) 36...de4-/+ 37.fe4 (37.Re4 Qg5 38.Qc8-/+) 37...Qg6 (better 37...Rd7!?-/+) 38.Qf4= Qh6 (38...Qg3 39.Qf5 g6 40.Qf2=) 39.Qf3+= g5? (better 39...Qf6!? 40.Qc3 Rc7+=) 40.e5+/- Qg7 41.Qc3 (41.Qd5 f6+-) 41...f6 42.Qc4 fe5 43.d5 (43.Re4 Re8+-) 43...Rf6 (43...Rd6 44.Re4+/-) 44.Qd3 (44.Re5!? Re5 45.Re5 Kh6+-) 44...Kh6 (44...Qg6 45.Qa3 Qf7 46.Rd2+= (46.Re5?? Re5 47.Qd3 Ref5-+)) 45.Rc2 (45.Re5 Re5 46.Re5 Rf1 47.Qf1 Qe5+/-) 45...Rd6 (45...Qg6 46.Qd1+/-) 46.Qe4 (46.Rc6 Rg6+-) 46...Qf7? (better 46...Qh7!? 47.Qb4 Rg6+-) 47.Rc6+- Red7?? (47...Rg6+-) 48.Qe5 Qf8 (48...Rc6 49.bc6 Rd5 50.Qh8 Kg6+-) 49.Rf1 Qd8 50.Rd6 (better 50.Rf7! Rf7 51.Rd6 Qd6 52.Qd6 Kh7+-) 50...Rd6 51.Rf7 Rg6 52.Ra7 Qc8 (52...Rf6+-) 53.Rc7 Qf8 54.Rc6 Rc6 (54...Qd8 55.Qf5 Rd6 56.Rd6 Qd6 57.Qe6 Qe6 58.de6+-) 55.dc6 Qa3 56.c7 Qc1 57.Kh2 Kh5 58.Qh8 (58.Qe8 Kh6 59.Qf8 Kh7 60.c8Q Qf4 61.Qf4 gf4 62.Qf5 Kg8 63.Qe6 Kf8 64.Qb6 Ke7 65.Qc7 Ke6 66.b6 Kf5 67.b7 Ke4 68.b8Q f3 69.Qb4 Kf5 70.Qcd6 fg2 71.Qbf4) 58...Kg6 59.Qg8 Kf6 60.Qf8 Kg6 61.c8Q (61.c8Q Qf4 62.Qf4 gf4 63.Qc6 Kf5 64.Qb6 f3 65.gf3 Kf4 66.Qf6 Ke3 67.b6 Ke2 68.Kg2 Kd3 69.b7 Ke3 70.b8Q Kd3 71.Qbb2 Kc4 72.Qb5) 1-0. Bushwacker (2000) - Motz Markus (2055), ChessWorld.net, 2016.

4.Nc3 Nf6

5.a4 d4 6.Na2 b6 7.e3 Bc5 8.Nf3 Qd6 9.Bc4 0-0 10.0-0 Bb7 11.ed4 ed4 12.h3 Re8 13.d3 Nbd7 14.Ng5 Ne5 15.f4 Nc4 16.dc4 h6 17.Nf3 Re4 18.Ne5 (18.Bc1 Rae8–+) 18...Re8 (18...d3 19.Kh1 Re2 20.Rf3 Bf3 21.Nf3–+) 19.Kh1 (19.Nc1 a5–/+) 19...Nd7 20.Qf3 Ne5 21.fe5 Qg6 22.Rad1 Ba8 23.Rd2? (23.Qd3 R8e5 24.Rd2 Qg5–+) 23...Re3 (worse is 23...R4e5 24.Qd3 Qd3 25.Rd3–+; 23...R8e5?! 24.Nc1–+) 24.Qf5 Qf5 25.Rf5 Rh3 26.Kg1 d3 27.Rff2 Re3 28.cd3 Re1 29.Kh2 Bf2 30.Rf2 c5 31.bc6 Bc6 32.Nc3? (better is 32.a5–+) 32...R8e5 33.d4 Rh5 34.Kg3 Re3 35.Kg4 Rg5 36.Kf4 Reg3 37.d5 Bd7 38.Ne4 R3g4 (better is 38...R5g4 39.Ke5 Rg2 40.Rg2 Rg2 41.Bc3 Ba4 42.Nd6–+) 39.Ke3 Rg6 40.c5 bc5 41.Nc5 Ba4 42.Bd4 (42.Be5 Bb5 43.Bb8 a6–+) 42...Bb5 43.Ne4 a6 44.Rb2 (44.g3–+) 44...f5 45.Nf2 White gets strong initiative 45...Rg2 46.Kf4 R6g5 47.d6 h5 (better is 47...Kf7 48.Ke5 Rg1–+) 48.Rb5= ab5? (48...R2g4 49.Ng4 Rg4 50.Ke5 Re4 51.Kd5 Re8+–) 49.d7+– Rg6 50.d8Q Kh7 51.Qd5 b4 52.Qf5 R2g5 53.Qb1 Rb5 54.Be5 (better is 54.Nd3!? Rd6 55.Nb4 Kh6+–) 54...b3 55.Nh3 Kh6 56.Qb2 (56.Qd3 Rb7 57.Kf3 Rf7 58.Bf4 Rf4 59.Nf4 Rf6+–) 56...Rb4? (better is 56...Rb7+–) 57.Kf5 Rgg4 (57...Kh7 58.Ng5 Rg5 59.Kg5+–) 58.Bg7! Rg7 (58...Kh7 59.Ng5 Rg5 60.Kg5 Rg4 61.Kh5 Rg7 62.Qb3 Re7+–) 59.Qd2 Theme: Double Attack (59.Qd2 Kh7 60.Qb4 Rf7 61.Kg5+–) 1–0. Baxa,Ottokar – Forster,Manfred, Passau op 8th, 2000.

5.a4 Be6 6.Nf3 (6.e3 c5-/+) 6...c6 (6...d4!? 7.Nb1 c5-/+) 7.e3 0-0 8.Be2 Nbd7 9.0-0 c5 10.Ng5 Bf5 11.d4? (11.e4 Ne4 12.Nge4 de4=+ (worse 12...Be4 13.Ne4 de4 14.d3+=)) 11...ed4 (better 11...cd4!? 12.ed4 e4-/+) 12.ed4=+ Rc8 13.dc5 (13.Nf3 Re8=+) 13...Rc5-/+ 14.Ba3 Bh2 (14...Qc7 15.b6 ab6 16.Bc5 Bh2 17.Kh1 Qc5 18.Kh2 Qc3 19.Bd3-/+) 15.Kh2=+ Rc3 16.Bf8 Nf8 17.Nh3? (better 17.Kg1=+) 17...Bh3 18.gh3 Qc7 19.Kg2 Ng6 20.Bd3 Nf4 21.Kh1 Nh3 22.Qh5?? (better 22.Qf3 Nf4 23.Rfe1-/+) 22...Nh5-+ 23.Rae1 Nf6 24.Re3 g6 (better 24...Nf4 25.Rfe1 g6 26.Rg3-+) 25.Rh3 Kg7 (25...Ne4 26.Kg2-+) 26.f4 (26.Re1 Ne4! 27.Rf3 Qe7-+) 26...Ne4 (26...Nh5 27.a5-+) 27.Kg2 (27.a5 Qa5 28.Kg2 Nc5-+) 27...Rc2 28.Kh1 Rc1 (28...Nf2 29.Kg1 Nh3 30.Kh1 Nf2 31.Kg2 Nd3 32.Kg3 Nf4 33.Rf4 g5 34.Kg4 Qf4 35.Kh5 Rh2) 29.Rhf3-+ Rf1 (29...Rf1 30.Bf1 Qc1-+) 0-1. Bushwacker (1930) - MarekSz (2120), ChessWorld.net, 2010.

5.e3 0-0=+.

5.g3 0-0 6.Bg2 Be6 7.e4 d4 8.Nd5 Bd5 9.ed5 Nbd7 10.c4 dc3 11.dc3 Nb6 12.Qb3 Qe7 13.Ne2 e4 14.c4 Bb4 15.Bc3 Bc3 16.Nc3 e3 17.0-0 Ng4 18.f3 (better is 18.Ne4!? f5 19.d6+=) 18...e2–/+ 19.Ne2 Qe2 (better is 19...Qc5!? 20.Kh1 Nf2 21.Rf2 Qf2–/+) 20.Rae1 Qc4 21.Qc4 Nc4 22.fg4 Nd2?? (better is 22...a6 23.ba6 Ra6= (worse is 23...ba6 24.Re7+/–)) 23.Rf2 Nc4 24.Re7 Rac8 25.Rc2 Nd6 26.a4 Rfe8 27.Rec7 Kf8 28.Kf2 Rc7 29.Rc7 Re7 30.Rc2 Ke8 31.h4 Ne4 (31...f6 32.Re2+/–) 32.Kf3 (32.Be4!? Re4 33.Re2 Re2 34.Ke2 h6+–) 32...Kd7 33.Kf4 Nf6 34.Bf3?? (better is 34.g5 Ne8 35.h5+–) 34...Kd6= 35.Rd2 Re5 36.g5 Nd5 37.Bd5 Rd5 38.Rd5 Kd5 39.Kf5 g6?? (39...a6 40.h5 g6 41.hg6 fg6 42.Kf6 ab5 43.ab5 Kc5+/–) 40.Kf6+– Ke4 (40...Kc5 41.Kf7 Kb4+–) 41.Kf7 Kf3 42.Kg7 Kg3 43.Kh7 (43.Kh7 Kh4 44.Kg6+–) 1–0. Baxa,Ottokar – Oparaugo,Thomas (2040), Passau op 6th, 1998.

5.g3 d4

6.Nb1 a6 7.e3 0-0 (7...de3 8.de3 0-0 9.Nc3–/+) 8.a4 (8.ed4 Re8 9.Ne2 ab5 10.de5 Be5–/+) 8...ab5 9.ab5 Ra1 10.Ba1 c5 11.Na3 Be6 (11...Bg4 12.Be2 Be2 13.Ne2–/+) 12.Bg2 (12.Nc4 Qe7–/+) 12...c4 13.Nb1 (13.Bb2!?–/+) 13...Qa5–+ 14.Bb2 Qb5 15.Qc1 c3 (15...Bd5 16.Nf3 Qc6 17.Qd1–+) 16.dc3 de3 17.fe3 Bc5 18.Ne2 (18.Ba3 Nc6–+) 18...Bg4 (18...Qb6!? 19.Ba3 Be3 20.Qb2 Qb2 21.Bb2–+) 19.c4 Qc4 Threatening mate: Qxe2 20.Nbc3 Bb4 21.0-0 (21.Kf2 Be2 22.Ne2 Ng4 23.Kf1 Bc5–+) 21...Be2 22.Ne2 Qe2 23.Bf3 (23.Rf2 Qh5 24.Bb7 Rd8–+) 23...Qb5 24.c4 Qc5 (24...Qe8 25.Qa1 Nc6 26.Bc6 Qc6 27.Be5–+) 25.Bb7 Rd8 26.Bc3 Bc3 27.Qc3 e4 28.Rb1 (28.Rf6 Rd3 29.Qc1 gf6–+) 28...Rd3 29.Be4 Rc3 30.Rb8 Qf8 31.Rf8 Kf8 32.Bb7 (32.Bd5 Nd5 33.cd5 Re3–+) 32...Ng4 33.e4 Rc4 34.h3 Rc1 (34...Nf6 35.e5 Nd7 36.Kf2–+) 35.Kg2 Rc2 36.Kg1 (36.Kf3 Nh2 37.Kf4 Rf2 38.Ke5 Rf3–+) 36...Ne3 (36...Ne3 37.e5 Rc5–+) 0–1. Zimmermann,Joerg (1690) – Baer,Werner (2000), TT–04.36 TSC, 2002.

6.Nb1 0-0

7.a4 c5 8.Na3 Be6 9.Bg2 Qc7 10.Nf3 e4 11.Ng5 Bd5 12.c4 dc3 13.dc3 h6 (13...c4!?–/+) 14.c4= e3 (14...Be5!? 15.Be5 Qe5+=) 15.Bd5 ef2 (15...hg5!? 16.Bf6 gf6+/–) 16.Kf2+/– hg5 17.Bf6 gf6 18.Qd3 Nd7?? (better is 18...Be5 19.Raf1 Re8+/–) 19.Qg6+– Kh8 20.Qh6 Kg8 21.Be4 (21.Be4 f5 22.Qg5 Kh8 23.Qf5 Nf6 24.Qf6 Kg8 25.Qg5 Kh8 26.Qh6 Kg8 27.Qh7) 1–0. Dammer,Axel (2400) – Mantau,Jan (2085), RSX7E – A00 – Sokolsky–1, 2008.

7.a4 Nbd7

8.c3 A) 8...Nc5 9.cd4 ed4 10.Bd4 Re8 11.e3 Be6 12.Nf3 Nb3 13.Nc3 Na1; B) 8...Re8 B1) 9.Nf3 Nc5 (9...d3 10.ed3 Nc5 11.Be2 Bh3 12.Ng5 e4 13.de4 Bg2) 10.Bg2 d3 11.0-0 de2 12.Qe2 e4 13.Nd4 Nd3; B2) 9.Bg2 d3 (9...Nc5 10.d3 a6 11.Nf3 e4 12.de4 ab5 13.ab5 Bd7 ) 10.Na3 Nc5 11.Nc4 Bg4 12.Kf1 e4 13.Ba3 Be7; B3) 9.Na3 Nc5 (9...dc3 10.Bc3 Ne4 11.e3 Ndf6 12.Nc4 Bf5 13.f3 Nc3) 10.Nc4 dc3 11.dc3 Be6 12.e3 e4 13.Be2 Be7; C) 8...Nb6 C1) 9.Nf3 Nc4 (9...Bg4 10.d3 c5 11.bc6 bc6 12.Bg2 Nbd5 13.cd4 Rb8) 10.Qc2 Bg4 11.cd4 Bf3 12.ef3 Nb2 13.Qb2 Re8; C2) 9.Qc2 d3 (9...Nbd5 10.Nf3 d3 11.ed3 Re8 12.Ng5 h6 13.Ne4 c6) 10.ed3 Bf5 11.Nf3 e4 12.d4 Re8 13.Nh4 Bg4; C3) 9.cd4 Nc4 10.Qc2 Nb2 11.Qb2 ed4 12.Qd4 Qe7 13.Nf3 Bc5; D) 8...d3 D1) 9.ed3 Nc5 (9...Qe7 10.Nf3 Nc5 11.Be2 Bh3 12.Ng5 Bf5 13.0-0 Nd3) 10.Nf3 Bf5 11.d4 ed4 12.cd4 Re8 13.Ne5 Be5; D2) 9.Nf3 e4 (9...Nc5 10.ed3 Bf5 11.d4 ed4 12.cd4 Re8 13.Ne5 Be5) 10.Nd4 Ne5 11.Na3 Re8 12.Qb3 c5 13.bc6 bc6; D3) 9.Na3 de2 (9...Nc5 10.Nf3 Ng4 11.h3 e4 12.Nd4 Ne5 13.e3 Qf6) 10.Be2 e4 11.Nc4 Nc5 12.Kf1 h5 13.Kg2 Bg4.

8.d3 A) 8...c6 A1) 9.c3 a6 (9...Qa5 10.Nf3 Nb6 11.Qd2 Nfd5 12.bc6 bc6 13.Bg2 dc3) 10.cd4 ed4 11.Bd4 c5 12.Bb2 Ne5 13.Bg2 Re8; A2) 9.Nd2 Qa5 (9...Qb6 10.Ngf3 cb5 11.ab5 Qb5 12.Rb1 Qc6 13.Bg2 b5) 10.Ngf3 cb5 11.ab5 Qb5 12.Rb1 Qa5 13.Bg2 Nc5; A3) 9.Nf3 Nc5 (9...Qb6 10.c3 cb5 11.ab5 Qb5 12.Qc2 Re8 13.Nbd2 dc3) 10.Nbd2 Be6 11.c3 dc3 12.Bc3 e4 13.Bf6 Qf6; B) 8...a6 B1) 9.Nf3 Nc5 (9...Re8 10.Nbd2 Nb6 11.Bg2 Bd7 12.0-0 ab5 13.ab5 Bb5) 10.Nbd2 ab5 11.ab5 Na4 12.Qc1 Bg4 13.c4 Bf3; B2) 9.c3 Nc5 (9...Re8 10.Nf3 e4 11.Nd4 ed3 12.e3 Ne5 13.Bd3 Bc5) 10.cd4 ed4 11.Bd4 Be6 12.Ra3 Ncd7 13.Ra1 ab5; B3) 9.Nd2 Nc5 (9...Nb6 10.Ngf3 ab5 11.ab5 Na4 12.Qc1 Bg4 13.c4 Bf3) 10.Nc4 ab5 11.Nd6 Qd6 12.ab5 Bd7 13.Nf3 Bb5; C) 8...Bb4 C1) 9.Nd2 Nc5 (9...Re8 10.Ngf3 Nc5 11.Bg2 e4 12.de4 Nfe4 13.0-0 Nc3) 10.Ngf3 Bg4 11.Bg2 e4 12.de4 Nfe4 13.0-0 Nc3; C2) 9.c3 Ba5 (9...dc3 10.Bc3 Qe7 11.Nf3 a5 12.ba6 Ra6 13.Bb4 Qb4) 10.Bg2 Nc5 11.Nf3 Nd5 12.Qc2 dc3 13.Nc3 e4; D) 8...Nc5 D1) 9.Nd2 a6 (9...Nd5 10.Bg2 Nb6 11.c3 dc3 12.Bc3 Bg4 13.Qc2 a6) 10.Ngf3 ab5 11.ab5 Na4 12.Qc1 Bg4 13.c4 Bf3; D2) 9.Bg2 Bf5 (9...a6 10.Nd2 ab5 11.ab5 Na4 12.Qc1 Qe8 13.c4 dc3) 10.Nf3 a6 11.c3 ab5 12.ab5 Ra1 13.Ba1 dc3; D3) 9.Nf3 a6 (9...c6 10.Nbd2 Be6 11.c3 dc3 12.Bc3 e4 13.Bf6 Qf6) 10.Nbd2 ab5 11.ab5 Na4 12.Qc1 Bg4 13.c4 Bf3.

8.e3 A) 8...Nc5 A1) 9.ed4 ed4 10.Bd4 Re8 11.Be2 Nce4 12.Nf3 Bh3 13.Rg1 Bg4; A2) 9.Be2 de3 (9...Re8 10.Nf3 Bh3 11.Ng5 Bg2 12.Rg1 Bd5 13.c4 Nfe4) 10.de3 e4 11.Bc4 Qe7 12.Ne2 Bh3 13.Nbc3 Rad8; A3) 9.Nf3 Qe8 (9...Bg4 10.h3 Bf5 11.ed4 ed4 12.Bd4 Qd7 13.g4 Rfe8) 10.Be2 Bh3 11.Ng5 Qc8 12.ed4 ed4 13.Bd4 Re8; B) 8...Re8 B1) 9.Nf3 Nb6 (9...Nc5 10.Bc4 Nce4 11.0-0 de3 12.de3 Bg4 13.a5 c6) 10.a5 Nbd5 11.Na3 Bg4 12.Be2 Bh3 13.Ng5 Bf5; B2) 9.Be2 Nc5 (9...Nb6 10.Nf3 Bh3 11.Ng5 Bg2 12.Rg1 Bd5 13.a5 Nc4) 10.Nf3 Bh3 11.Ng5 Bg2 12.Bc4 Rf8 13.Rg1 Bd5; B3) 9.Na3 de3 (9...Nb6 10.Nc4 Bg4 11.f3 Be6 12.Nd6 Qd6 13.Kf2 Nc4) 10.fe3 Nb6 11.Nc4 Bg4 12.Nf3 e4 13.Nd6 Qd6; C) 8...Nb6 C1) 9.Be2 Re8 (9...Ne4 10.ed4 ed4 11.d3 Bb4 12.Kf1 Ng5 13.h4 Ne6) 10.Nf3 Bh3 11.a5 Nbd5 12.Ng5 Qd7 13.Na3 Bb4; C2) 9.a5 Nbd5 10.Nf3 Qe7 11.Bc4 a6 12.Na3 de3 13.fe3 e4; C3) 9.Nf3 Re8 (9...Qe7 10.ed4 ed4 11.Qe2 Qd8 12.Bd4 Re8 13.Be3 Nfd5) 10.a5 Nbd5 11.Na3 de3 12.fe3 e4 13.Nd4 Bb4; D) 8...Ne4 D1) 9.Bg2 Ndc5 (9...Ng5 10.Nf3 Nb6 11.Ng5 Qg5 12.0-0 Nc4 13.Qc1 Bc5) 10.d3 Ng5 11.Nd2 de3 12.fe3 f5 13.Ne2 f4; D2) 9.f3 Nec5 10.Ne2 Re8 11.ed4 ed4 12.Bd4 Ne6 13.Bc3 Nb6; D3) 9.Nf3 Ndf6 (9...Ndc5 10.d3 Nf6 11.Nbd2 Re8 12.Nc4 de3 13.fe3 e4) 10.Bg2 a6 11.ed4 ed4 12.0-0 Bg4 13.Bd4 Be7.

8.Nf3 a6 (8...Nc5 A) 9.d3 a6 (9...Be6 10.Nbd2 a6 11.c4 dc3 12.Bc3 e4 13.de4 Nfe4) 10.Nbd2 ab5 11.ab5 Na4 12.Qc1 Bd7 13.Bg2 Nb2; B) 9.Qc1 Qd7 (9...a6 10.Na3 Be6 11.Bg2 Na4 12.0-0 h6 13.d3 Nd5) 10.Bg2 a6 11.Na3 Na4 12.b6 Nb6 13.0-0 Qe7; C) 9.Bg2 Bf5 (9...a6 10.0-0 Be6 11.e3 ab5 12.ab5 Na4 13.Qc1 Bc4) 10.0-0 a6 11.e3 ab5 12.ab5 Ra1 13.Ba1 Qa8; 8...Nb6 A) 9.c3 Nc4 (9...d3 10.ed3 e4 11.de4 Ne4 12.Bg2 Re8 13.0-0 Nc4) 10.Qc2 Nb2 11.Qb2 d3 12.ed3 Re8 13.Be2 Bh3; B) 9.Qc1 a6 (9...Bc5 10.Bg2 e4 11.Ng5 Re8 12.0-0 h6 13.Nh3 Bg4) 10.Na3 Na4 11.ba6 Nb2 12.Qb2 Ra6 13.Nc4 Ra1; C) 9.d3 a6 (9...Bf5 10.Bg2 a6 11.Nh4 Bd7 12.Bb7 ab5 13.Ba8 Qa8) 10.c3 Bg4 11.Nbd2 dc3 12.Bc3 Qe7 13.Bg2 Nfd5; 8...Qe7 A) 9.Bg2 Nc5 (9...Nb6 10.0-0 Bd7 11.c3 Nc4 12.Qc1 Nb2 13.Qb2 Rfe8) 10.0-0 a6 11.e3 de3 12.de3 ab5 13.ab5 Ra1; B) 9.d3 Nc5 (9...a6 10.c3 ab5 11.ab5 Ra1 12.Ba1 dc3 13.Nc3 Bb4) 10.Nbd2 Bd7 11.Nc4 a6 12.c3 e4 13.Nfe5 ed3; C) 9.Bh3 Nc5 (9...Nb6 10.Bc8 Rfc8 11.d3 a6 12.c3 ab5 13.ab5 Ra1) 10.Bc8 Rfc8 11.0-0 a6 12.c3 d3 13.Na3 de2; 8...Re8 A) 9.d3 a6 (9...Nc5 10.Nbd2 a6 11.Nc4 Bf5 12.Bg2 Qd7 13.0-0 ab5) 10.Nbd2 Nb6 11.Bg2 Bd7 12.0-0 ab5 13.ab5 Bb5; B) 9.Bh3 Nc5 (9...c5 10.bc6 bc6 11.0-0 Rb8 12.Ba3 Nc5 13.Bc8 Qc8) 10.Bc8 Qc8 11.0-0 a6 12.c3 d3 13.Na3 Qg4; C) 9.Bg2 Nb6 (9...Nc5 10.0-0 a6 11.e3 de3 12.de3 e4 13.Nd4 Bg4) 10.d3 a6 11.c3 ab5 12.ab5 Bg4 13.0-0 Qd7) 9.Bg2 (9.c3 Re8 (9...Nc5 10.cd4 ed4 11.Bd4 Qe7 12.e3 ab5 13.ab5 Ra1) 10.cd4 ed4 11.Bd4 ab5 12.ab5 Nc5 13.e3 Ra1; 9.Na3 Nb6 (9...ab5 10.Nb5 Be7 11.a5 Ne4 12.c3 c6 13.Qc2 Ra5) 10.c3 dc3 11.Bc3 Qe7 12.Bb2 Bf5 13.e3 e4; 9.e3 de3 (9...Nc5 10.ba6 Na6 11.Na3 Nc5 12.Nc4 Na4 13.Qb1 Re8) 10.de3 e4 11.Nd4 ab5 12.ab5 Ra1 13.Ba1 Ne5) 9...Nc5 (9...Nb6 10.c3 (10.0-0 ab5 11.ab5 Ra1 12.Ba1 Bd7 13.d3 Bb5) 10...Nc4 11.Qc2 Nb2 12.Qb2 ab5 (12...d3 13.ed3 Bf5) 13.ab5 Ra1 14.Qa1 dc3 15.Nc3+=) 10.0-0 Bg4 (10...Bf5 11.e3 ab5 12.ed4 Na4 13.Ra4 ba4) 11.d3 (11.Ba3 Qe7–/+ (11...Re8 12.h3 Bd7 13.c3 ab5) 12.d3 Nd5 13.Qe1 ab5) 11...ab5 12.ab5 Qd7 (12...Na4 13.Ba3 Ba3) 13.c4 (13.Na3 Na4) 13...Ra1 14.Ba1 Ra8 15.Nbd2 Ra2 16.Re1 Qd8 (16...Qf5 17.Qb1 Ra4 18.e3–/+) 17.h3 Bf5 18.Qb1 Qa8 19.Bb2 Qa4 20.Rc1 h6 21.Re1 c6 22.bc6 bc6 23.Rc1 (23.Nh4 Be6–/+) 23...Bd7 ½–½. Dammer,Axel (2400) – Heinrich,Olaf (2290), RSX7E – A00 – Sokolsky–1, 2008.

8.Bg2 A) 8...a6 A1) 9.Na3 Nb6 (9...Nc5 10.Nc4 Be6 11.Nd6 Qd6 12.Nf3 ab5 13.ab5 Bc4) 10.c3 dc3 11.Bc3 Qe7 12.ba6 Ra6 13.Nb5 Bc5; A2) 9.c3 d3 (9...Nb6 10.d3 h6 11.Nf3 ab5 12.ab5 Ra1 13.Ba1 dc3 ) 10.Nf3 e4 11.Nd4 Ne5 12.0-0 Bg4 13.f3 de2; A3) 9.Nf3 Nb6 (9...Nc5 10.0-0 Bf5 11.e3 ab5 12.ab5 Ra1 13.Ba1 Qa8) 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Bd7 13.d3 Bb5; B) 8...Nc5 B1) 9.Qc1 a6 (9...Be6 10.Nf3 h6 11.0-0 a6 12.e3 de3 13.fe3 e4) 10.Nf3 Be6 11.Na3 Na4 12.0-0 h6 13.e3 de3; B2) 9.d3 a6 (9...Bd7 10.Nd2 a6 11.Ngf3 ab5 12.ab5 Bb5 13.0-0 Qd7) 10.Nd2 Bg4 11.Ngf3 ab5 12.ab5 Na4 13.Qb1 Qd7; B3) 9.Nf3 a6 (9...Bd7 10.0-0 a6 11.c3 ab5 12.ab5 Ra1 13.Ba1 d3 ) 10.0-0 Bd7 11.e3 ab5 12.ed4 Na4 13.Bc3 e4; C) 8...Qe7 C1) 9.d3 Nc5 (9...a6 10.Nf3 Nc5 11.c3 e4 12.de4 Nce4 13.0-0 ab5) 10.Nf3 Bd7 11.c3 Ng4 12.cd4 ed4 13.0-0 a6; C2) 9.c3 d3 (9...Nc5 10.Nf3 Be6 11.cd4 Bb3 12.dc5 Bd1 13.cd6 cd6) 10.Nh3 e4 11.0-0 Ne5 12.Ba3 Bg4 13.Nf4 de2; C3) 9.Nf3 Nc5 (9...Nb6 10.d3 a6 11.c3 Bg4 12.h3 Bf3 13.Bf3 e4) 10.0-0 a6 11.e3 de3 12.de3 ab5 13.ab5 Ra1; D) 8...Nb6 D1) 9.d3 a6 (9...Qe8 10.Nf3 a6 11.c4 ab5 12.ab5 Ra1 13.Ba1 Qe7 ) 10.c3 Nbd5 11.cd4 ed4 12.Nf3 Bb4 13.Nbd2 Nc3; D2) 9.Qc1 Qe7 (9...a6 10.Nf3 ab5 11.ab5 Ra1 12.Ba1 Qe7 13.d3 Bd7) 10.Nf3 a6 11.ba6 Ra6 12.Na3 Ra4 13.Nb5 Bc5; D3) 9.Nf3 Bd7 (9...Nc4 10.Qc1 a6 11.Na3 ab5 12.Nb5 Bc5 13.0-0 c6) 10.Qc1 Qe7 11.0-0 a6 12.c3 ab5 13.cd4 e4.

4.c4 dc4

5.e3 c6 6.a4 (6.Bc4 cb5 7.Bb5 Bd7=) 6...Bd7 (6...Nf6 7.Na3 Ba3 8.Ra3 cb5 9.ab5=) 7.Na3 (7.Nf3 Qe7 8.Na3 c3 9.dc3 Bc7+=) 7...Ba3= 8.Ra3 (8.Ba3 cb5 9.Qh5 Qf6+=) 8...cb5 9.Be5 (better is 9.Nf3 b4 10.Ra1=) 9...a6?? (better is 9...Nf6 10.Nf3 b4+=) 10.Bg7+– b4 (10...Qe7 11.Ra1 (11.Bh8?! Qa3 12.Nf3 Nc6+=) 11...ba4 12.Bc4+–) 11.Ra1 (11.Bh8?! ba3 12.Qa1 Qe7+/–) 11...b5 (11...Be6 12.Bh8 Nf6 13.Nf3+–) 12.ab5 Bb5 13.Bh8 a5 (13...Nc6 14.Nf3+–) 14.Qh5 Qd7 (14...Qb6 15.Nf3 Nd7 16.Qh7+–) 15.Nf3 Nc6 (15...Ne7 16.Nd4 Bc6 17.Bc4+–) 16.Qb5 c3 17.dc3 Rb8 18.Qg5 Nge7 19.Ne5 Qc7 20.Ng4 b3 21.Rd1 Nd5 22.Nf6 Nf6 23.Bf6 Ne7 (23...Nd4 24.Qg8 Kd7 25.Qf7 Kc6 26.Qc4 Kd7 27.Rd4 Qd6 28.g3 Qd4 29.Bh3 Kd6 30.Qd4 Kc6 31.Qd7 Kb6 32.Bd4 Ka6 33.Bf1 Rb5 34.Bb5) 24.Bb5 Kf8 (24...Rb5 25.Qb5 Kf8 26.Qb7 Qc3 27.Bc3 f5 28.Bf6 Kf7 29.Qe7 Kg6 30.Qg7 Kh5 31.Qg5) 25.Qg7 1–0. Taulien,Hans_Juergen (2350) – Hangmann,Christian (2005), remoteschach.de, 2002.

5.e4 Be6 6.Qc2+= Nf6 (6...Nd7 7.Nf3 Bg4 (7...a6 8.Bc4 Bc4 9.Qc4 Ngf6 10.0-0 ab5 11.Qb5 0-0 12.Nc3 c6+=; 7...Ngf6 8.Bc4 Bc4 9.Qc4 a6 10.0-0 ab5 11.Qb5 0-0 12.Nc3 c6+=) 8.Bc4 Bf3 9.gf3 Ngf6 10.d4 ed4 11.Bd4 Be5 12.Bc3 Rc8+=; 6...c6 7.Bc4 Bc4 (7...Qg5 8.Bf1 Nf6 9.Nf3 Qf4 10.Nc3 0-0 11.Rd1 cb5 12.Nb5 Rc8+=) 8.Qc4 Qg5 9.g3 Qe7 10.Nc3 Nf6 11.Nf3 a6 12.a4 ab5+=; 6...a6 7.Bc4 Qd7 (7...Bc4 8.Qc4 Qg5 9.Ne2 Qg2 10.Rg1 Qh2 11.Qd5 Nd7 12.ba6 Ne7+=; 7...Qg5 8.Bf1 Nf6 9.Nf3 Qf4 10.Nc3 0-0 11.Bc1 Qg4 12.Rb1 ab5+=; 7...Qe7 8.Nf3 ab5 9.Bb5 c6 10.Bc4 Bc4 11.Qc4 Nf6 12.Nh4 b5+=) 8.Na3 Ba3 9.Be6 fe6 10.Ba3 ab5 11.Bc5 Ra4 12.d3 Na6–/+) 7.Bc4 (7.Nf3 a6 (7...0-0 8.Bc4 Bc4 9.Qc4 Nbd7 10.0-0 a6 11.Nc3 Nb6 12.Qd3 ab5=; 7...Nbd7 8.Bc4 Bc4 9.Qc4 a6 10.d4 ed4 11.Bd4 ab5 12.Qb5 Ne4+=; 7...Qe7 8.Bc4 Bc4 9.Qc4 a6 10.Nc3 0-0 11.0-0 ab5 12.Nb5 Nc6=) 8.Bc4 Bc4 9.Qc4 Nbd7 10.0-0 0-0 11.Nc3 Nb6 12.Qd3 Qd7+=; 7.f4 ef4 8.e5 Ng4 9.ed6 Qh4 10.Kd1 Nf2 11.Kc1 Nh1 12.dc7 Qf2–+) 7...Bc4 (7...Qd7 8.Nf3 Bc4 9.Qc4 Qg4 10.0-0 Nbd7 11.d4 ed4 12.Qd4 Bc5=; 7...Qe7 8.Nf3 a6 9.0-0 Bc4 10.Qc4 ab5 11.Qb5 c6 12.Qe2 0-0+=) 8.Qc4 0-0 (8...Nbd7 9.Nf3 a6 10.0-0 0-0 11.ba6 Ra6 12.d4 ed4+=) 9.Nf3 Nbd7 (9...a6 10.Ne5 Qe8 11.f4 ab5 12.Qe2 Ra4=) 10.0-0 Nb6 (10...a6 11.Nc3= (11.ba6 Ra6 12.d4 ed4+=) 11...Nb6 12.Qd3 ab5=) 11.Qc2= Qd7 (better is 11...Re8!?= 12.Rd1 Qe7=; 11...Qe8 12.a4 a6=) 12.d4+/– (worse is 12.Ne5 Qb5 13.Nf3 Ne4 14.Bg7 Nd2 15.Nbd2 Kg7+=) 12...Rfe8? (better is 12...ed4 13.e5 Be5 14.Ne5 Qb5 15.Bd4 Rad8+–; 12...Qb5+/–) 13.de5+– (13.de5 Ne4 14.Qe4 Qb5 15.Bd4+–) 1–0. Tiedemann,Joern (1940) – Sochacki,Heiko (2025), remoteschach.de, 2010.

5.e4 Be6 6.Nf3 A) 6...Qd7 A1) 7.Qc2 Qb5 (7...a6 8.b6 cb6 9.Ne5 Be5 10.Be5 f6 11.Bb2 b5 12.a4 ba4+=) 8.Ng5 Qd7 9.Ne6 Qe6 10.Bc4 Qg6 11.0-0 Nf6 12.Nc3 0-0–/+; A2) 7.Ne5 Qb5 8.Nc4 Bc4 9.Bg7 Bf1 10.Rf1 Be5 11.Nc3 Qa5 12.Bh8 Bh8=; B) 6...a6 7.Ne5 (7.ba6 Ra6 8.Ne5 Be5 9.Be5 Nf6 10.Qf3 Nbd7 11.Bc3 Nc5 12.Bf6 gf6+=) 7...Be5 (7...Qg5 8.h4 Qf4 9.Nc4 Qe4 10.Qe2 Qe2 11.Be2 Bf8 12.b6 cb6=) 8.Be5 Nf6 9.Nc3 Nbd7 10.Bf4 Nc5 11.Qf3 0-0 12.ba6 Ra6=; C) 6...Qf6 7.Qc2 Bg4 (7...a6 8.Bc4 ab5 9.Bb5 c6 10.Bc4 Bg4 11.Be2 Na6 12.Na3 Nb4=) 8.Be2 Nd7 9.Qc4 Rd8 10.Qd5 Bf3 11.Bf3 Ne7 12.Qc4 Nb6+=.

5.e4 Nf6 6.Nc3 (6.Bc4 Ne4 7.Qe2 Bf5+=) 6...Be6–/+ 7.Qa4 (7.Nf3 Nfd7–/+) 7...Nbd7 8.Nf3 Nc5 (8...Nb6 9.Qc2–/+) 9.Qc2 h6 (9...Qe7 10.Ng5–/+) 10.Be2 (10.Nb1 Nfe4 11.Bc4 Ng5 12.Ng5 Qg5–/+) 10...Qe7 (10...0-0 11.0-0–/+) 11.0-0 0-0 12.h3 (12.Na4 Nce4 13.d3 c3 14.Nc3 Nc3 15.Bc3 Bf5–/+) 12...a6–+ 13.ba6 Ra6 14.Rfe1 (14.Rfc1 Rfa8–+) 14...Rfa8 15.Bf1 (15.Rad1 Rd8–+) 15...c6 16.Rad1 (16.Nd1 b5–+) 16...b5 17.g4? (17.a3–+) 17...b4 (17...b4 18.Ne2 Nd3–+ (18...Nce4?! 19.Nc1–+)) 0–1. Winfridsson,Hakan – Kuhlmann,AEJ, email 4AMM–02, 1997.

5.e4 Qh4 6.d3–/+.

5.Nf3 Nd7 6.e4 (6.Nc3 Ngf6 7.e4 Nb6=+) 6...Ngf6 (6...Nb6 7.Ne5 (7.Be5?? Be5 8.Ne5 Qd4–+) 7...Qe7 8.Nc4 Qe4 9.Ne3=+) 7.Qc2 (7.Nc3 Nc5 8.Bc4 A) worse 8...Nce4 9.Ne4 Ne4 10.0-0+=; B) worse 8...Nfe4 9.Ne4 Ne4 10.0-0+= (worse 10.Ne5 Be5 11.Be5 Qg5=+); C) 8...0-0=) 7...a6–/+ 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nc5 (10...0-0 11.Bc4 Nb6 12.Ne5=+) 11.Bc4 Nfe4 (11...Nce4 12.0-0 0-0=) 12.0-0= 0-0 (12...Qf6 13.Re1 Bf5 14.d3=) 13.Re1 Ng5 (13...Bf5 14.Nc3 Ng3 15.Qa2=) 14.Ne5 Re8 (14...Be6 15.f4 f6 16.Nd3 (worse 16.fg5 Be5 17.Be5 fe5=+) 16...Nd3 17.Qd3 Bc4 18.Qc4 Nf7 19.Nc3=) 15.f4 (15.d4 Nd7=) 15...Be5 (15...Nd7 16.d4 Ne6 17.g3=) 16.Re5+= Re5 17.Be5 Nge4?? (better 17...Nge6 18.f5 Nf8+=) 18.d4+– 1–0. Taulien,Hans_Juergen – Rohde,Matse, remoteschach.de, 2002.

5.Nf3 Be6 6.Be5? Be5 7.Ne5 Qd4 8.Nf7 Bf7 –+ (8...Qa1?! 9.Nh8 Nf6 10.g4=+).

5.Nf3 Be6 6.Be5 Be5 7.Ne5 Nd7 8.Nd7 Qd7=+.

5.Nf3 Be6 6.Ne5 f6 7.Nf3 Ne7 8.e3 0-0 (8...Nd7!?=+) 9.Qc2= a6 10.a4 (10.Bc4 Nd5+=) 10...ab5= 11.ab5 Ra1 12.Ba1 Qe8 (12...Nd5 13.Bc4 Nd7 14.Nc3+=) 13.Bc4+= Qf7 14.Be6 Qe6 15.0-0 Nd7 16.Nc3 b6 (16...Ne5!?+=) 17.Nd4+/– Qf7 18.Ne4 f5 19.Nd6 cd6 20.Qc7 Nc8 21.Bc3 Nc5 22.Qf7 Rf7 23.f3 g6 24.Ra1 Rf8 25.Nc6 Kf7 26.Nb4 (26.d4 Nd3+–) 26...g5 27.Kf1 g4 28.Nd5 gf3 29.gf3 Nd7 30.Bd4 Rg8 31.Ra8 h6 32.Kf2 Re8 33.h4 Rg8 34.h5 Rf8 (34...Nc5 35.Nf4+–) 35.d3 Rg8 36.e4 Nc5 37.Bc5 (37.Ke2 Ke6+–) 37...dc5 38.ef5 (38.Rb8 f4+–) 38...Re8 (better is 38...Nd6 39.Rg8 Kg8+–) 39.Rb8 Re5 40.Rb7 (40.Rc8 Rd5 41.Rc6 Rd3 42.Rh6 Rd5 43.Rb6 Rf5+–) 40...Kf8 (40...Ne7 41.Ne7 Re7 42.Rb6+–) 41.Nf4 (41.Nb6!? Nb6 42.Rb6 Rd5+–) 41...Ke8 (41...Rf5 42.Ne6 Kg8 43.Rb8+–) 42.Rb8 (42.Ne6 Nd6 43.Rb6 Nf5+–) 42...Kd7 43.Ng6 Rf5? (better is 43...Re8+–) 44.Rc8! Rh5 (44...Kc8 45.Ne7) 45.Rc6 Rh2 (45...Rd5+–) 46.Kg3 Rb2 47.Rb6 Kc7 (47...Re2 48.Kf4 Rb2 49.Ne5 Kd8 50.Nf7 Kd7 51.Ke4+–) 48.Rc6 Kb7 49.Rc5 Kb6 50.Rh5 Rb3 51.Ne5 Rb5 52.Kf4 Rb4 53.Ke3 Rb1 54.Ke4 Re1 55.Kd5 Kb7 56.Rh6 Rf1 57.Rh7 Ka6 58.Kc6 (58.d4 Kb6+–) 58...Rb1 (58...Rc1 59.Kd6+–) 59.Nd7 (59.d4 Rb6 60.Kd5 Rb5 61.Ke4 Kb6+–) 59...Rg1 60.Nc5 Ka5 61.Ra7 Kb4 62.Ra4 Kc3 63.f4 Rf1 64.Kd5 Kb2 65.Rc4 Ka3 66.Ke6 Re1 67.Re4 Rc1 68.Ra4 Kb2 69.Rc4 Re1 70.Kd5 Rf1 71.d4 Ka2 72.Ke5 Re1 73.Kf6 Rd1 74.f5 Rf1 75.Ke6 Re1 76.Kf7 Re3 77.f6 Re1 78.d5 Rd1 79.Ke6 Re1 80.Re4 Rg1 81.f7 Rg6 (81...Rf1 82.Nd7 Kb3+–) 82.Kf5 Rg2 83.f8Q 1–0. Taulien,Hans_Juergen – Tiedemann,Joern, remoteschach.de, 2002.

5.Nf3 Be6 6.Ne5= Nf6 7.Qc2 (7.e3 Be5 8.Be5 0-0=) 7...Be5 8.Be5 Nbd7 9.Bd4 (9.Bb2 a6 10.ba6 Ra6=) 9...a6=+ 10.Nc3 (10.ba6 Ra6 11.e3 c5=) 10...ab5 (10...0-0 11.Rb1=+) 11.Nb5= 0-0 12.e4 c6 13.Nd6 b5 14.a4 (14.d3 Qe7 15.e5 Ng4 16.dc4 Nde5–/+) 0–1. Subedei – JF_, ChessWorld.net, 2005.

5.Nf3 Qe7 6.e4 Bd7 (6...Nf6 7.Bc4 Ne4 8.0-0=+) 7.Bc4= Nf6 8.Nc3 0-0 9.0-0 c6 10.d4 ed4 (10...Bg4 11.d5=) 11.Qd4+= Bc5 12.Qd3 cb5 (12...Bg4!?=) 13.Nd5+/– Nd5 14.Bd5 Bc6 15.Rfd1 (15.Qc3 Qf6 16.Qf6 gf6 17.Bf6 Nd7+=) 15...Bd5 (15...b4 16.Nd4 Bd5 17.ed5=) 16.Qc3 (16.ed5 b4=) 16...f6= 17.Rd5 b6 18.Qb3 Kh8 19.Re1 b4 (better is 19...Nc6!?=) 20.e5+/– fe5? (better is 20...f5 21.e6 h6+/–) 21.Ree5+– (< 21.Be5 Nc6=+) 21...Qb7?? (21...Qf7 22.Rh5 Bf2 23.Kf2 Qg8+–) 22.Rh5 Nc6 23.Qc2 h6 24.Rh6 (24...Kg8 25.Qh7 Kf7 26.Ng5 Ke8 27.Re6 Qe7 28.Qg6 Rf7 29.Qf7) 1–0. ygfr – lmyf, internet, 2009.

5.Nf3 f6 6.Qc2 (6.e4 a6 7.Bc4 ab5 8.Bb5 c6=) 6...Be6 (6...a6 7.Qc4 ab5 8.Qb5 Nc6 9.e4+=) 7.e3 (7.e4 a6 8.Bc4 Qd7 9.Be6 Qe6=) 7...a6 (7...Qe7 8.Bc4 Bc4 9.Qc4=) 8.Bc4 Bc4 9.Qc4 ab5 (9...Qd7 10.Nc3=) 10.Qb5 Nd7 11.Nc3 (11.d4=) 11...c6 (11...b6 12.0-0=) 12.Qb3 (12.Qb7!? Ne7 13.Qb3+/–) 12...b5 (12...Nc5 13.Qc2=) 13.Ne4 Nc5 14.Qc2 (worse is 14.Nd6 Qd6 15.Qc2 e4–/+) 14...Qe7 (14...Ra4 15.d4 Rc4 16.Nd6 Qd6 17.dc5 Rc2 18.cd6 Rb2 19.Nd2+=) 15.a4 (15.0-0 Ra4 16.Nc5 Rc4+=) 15...Ra4 (worse is 15...ba4 16.Ba3 Ra5 17.Bc5 Bc5 A) worse is 18.Nc5 Qc5 (worse is 18...Rc5 19.Qa4 e4 20.Nd4+/–) 19.Qe4 a3+=; B) 18.Ra4 Ra4 19.Qa4+–) 16.Ra4 ba4 17.Nc5 Bc5 18.Qa4 Qb7 (18...Qd6 19.0-0 Ne7 20.d4 ed4 21.Bd4 Bd4 22.Nd4+=) 19.0-0 Ne7 20.Rb1 0-0?? (better is 20...Bd6+=) 21.Qc4+– (21.Qc4 Nd5 22.Qc5+–) 1–0. Wall,Bill – MikeG, internet, 1999.

5.Nf3 Qf6 6.Qc2 Be6 7.e4 Ne7 8.Bc4 Bg4 9.Ng1 0-0 10.h3 Bd7 11.Nc3 c6 12.Nf3 Rc8 13.Qb3 cb5 14.Nb5 Bb5 15.Bb5 (15.Qb5 Qg6 16.Qb7 Qg2+/–) 15...a6 (15...Qg6!?–/+) 16.Be2 b5 17.a4 ba4 18.Qa4 Ng6 19.g3 Rd8 (19...Nc6 20.Rc1 Nge7 21.0-0=+) 20.Bc3 Ne7 21.0-0 Nd7 22.d4 ed4 23.Bd4 Qg6 24.Nh4 (< 24.Ba6 Nb8 25.Nh4 Qe6–/+) 24...Qg5 25.Be3 Qf6 26.Rfc1 a5 27.f4 Bb4 28.Bg4 Nb6 29.Qb5 Rab8 30.Qe2 Qd6 31.Qf2 Nd7 (31...Qf6 32.Nf5 Nf5 33.Bf5=) 32.e5 Qa6 33.Nf5 Nd5 34.Bd4 Nf8 35.Bc5 Ne6 36.Bd6 Bd6 37.Nd6 a4 38.f5 Ng5 39.h4 Rb4 40.hg5 Rg4 41.Qf3 (41.g6 hg6 42.fg6 f6=) 41...Qa7 42.Kh1 Qa8?? (42...Rd4 43.Rd1=+) 43.Ra3 (better is 43.g6 Rd4 44.gh7 Kh7 45.Qh5 Kg8 46.Qf7 Kh8 47.Kg1+–) 43...Rd4= 44.f6 g6 (44...gf6 45.gf6 Nf6 46.Qa8 Ra8 47.Nf5+–) 45.Ra2 Ne3 46.Qa8 Ra8 47.Rc7 (47.Ra3 Nf5 48.Nf5 gf5 49.Kg2+=) 47...Rf8?? (47...Rd1 48.Kh2 Ng4 49.Kg2 Re1+=) 48.Re7 (48.Kg1 Ng4 49.Re7 Rd1 50.Kg2 Ne5+/–) 48...Rd1 49.Kh2 Ng4 50.Kh3 Ne5 51.Ne4 (51.Re5 Rd6 52.Ra4 Rfd8+/–) 51...Rd5 (better is 51...Nc6 52.Rc7 Rd4=+) 52.Nc3+/– Rc5 53.Na4 Ra5 54.Nc3 Ra2 55.Na2 Nc6 56.Rd7 h5? (56...Rd8 57.Rd8 Nd8 58.Nc3+=) 57.Nc3?? (57.gh6 Kh7 58.Rc7+/–) 57...Rb8 58.Ne4 Rb4 59.Nd6 Rd4 60.Kg2 Rd5 (60...Rd2 61.Kf1+=) 61.Kf2+/– Rd3 ½–½. Taulien,Hans_Juergen – Gerards,Holger, remoteschach.de, 2002.

5.e3 Be6

6.Qc2 Bd5!?–/+.

6.Qc2 Nd7 7.Bc4 Bc4 8.Qc4 Qg5 9.Nf3?? (better is 9.Qd5 Ne7 10.Qb7+=) 9...Qg2–+ 10.Rg1 Qf3 11.Rg7 Ne7 (11...Qh1 12.Ke2 Nh6 13.Nc3 Qh2 14.Rag1–+) 12.Nc3 0-0-0 (better is 12...f5!? 13.Rg3 Qh1 14.Qf1 Qf1 15.Kf1–+) 13.Ne4 Nb6 (13...Nf5 14.Rf7 Rhg8 15.Ng3–/+) 14.Nd6 Rd6 15.Qf7 Qf7 16.Rf7 Ng6 17.Rc1 Rd7 18.Rf5 (18.Rd7 Kd7 19.f4 Rg8–+) 18...Re8 19.h4? (19.Ke2–+) 19...Nh4 20.Rh5 Nf3 21.Ke2 Rd2 22.Kf3 e4 (22...Rb2 23.Rh7 Nd7 24.a4–+) 23.Kg4 (23.Kg3 Rb2 24.Rh7 Rg8 25.Kh3 Nd5–+) 23...Rb2 24.Rh7 Nd5 (24...Nd5 25.Rf7 Ra2–+) 0–1. Pruvost,Alain – Liefooghe,Thierry (1800), 7e open Herlies, 2002.

6.Qc2 Nd7 7.Nf3 Bg4 (7...Ngf6 8.Ng5 Bd5 9.e4–/+) 8.Bc4= Bf3 9.gf3 Qg5 10.Nc3 Ngf6 11.Ne4 Qg2 12.Ke2 Qg6 (12...Ne4!? 13.fe4 Rd8=) 13.Rag1 Qh6 14.d4 ed4 15.Bd4 0-0 (15...Be5 16.Rd1=) 16.Rg5 Ne8 17.Rhg1 (17...Bh2 18.Rh1+/–) 1–0. Taulien,Hans_Juergen – Walker,Maria, remoteschach.de, 2002.

6.Qc2 Nf6 7.Nf3 Nbd7 8.Bc4 Bc4 9.Qc4=+.

6.Qc2 Nf6 7.Nf3 Nbd7 8.Ng5=+.

6.Qc2 Nf6 7.Nf3 e4 8.Nd4 (8.Ng5 Bf5=) 8...Bg4 (8...Bd5 9.Nf5 0-0 10.Nc3=+) 9.Bc4= Nbd7 10.h3 Bh5 11.Nf5 0-0 12.Nd6 (12.Nc3 Re8=) 12...cd6=+ 13.d4 d5 (13...Rc8 14.Qb3=+) 14.Bb3= Rc8 15.Qd2 (15.Nc3 Nb6=) 15...Nb6 16.Na3 (16.Ba3 Re8=) 16...Nfd7 17.0-0 f5 (17...Qg5 18.Kh2=+) 18.Rac1 Rc1 (18...Qg5 19.Kh2=) 19.Rc1 Rf6 (19...Qg5 20.Kf1=) 20.Bd1 (20.Nc2!?+=) 20...Bd1=+ 21.Qd1 Rg6 (21...f4 22.ef4 Rf4 23.Qd2=+) 22.Qf1 (22.Qh5 Rg5 23.Qe2 Qb8=) 22...Qh4 23.Kh2 Nf6 24.Rc2 Rh6 (24...f4 25.ef4 Qf4 26.Kg1=+) 25.Bc1 (25.Rc7 Rg6 26.Rb7 Ng4 27.Kg1 Qh3 28.gh3 Ne3 29.Kh1 Nf1=) 25...g5 Black intends f4 (25...Ne8 26.Qe1=) 26.f3 (26.Rc7 g4 27.Rb7 gh3-/+) 26...f4 (better 26...g4!? 27.fg4 fg4=+) 27.ef4+= gf4 28.fe4 Qg3 29.Kg1 f3?? (29...Rh3! 30.Bf4 Qg4+=) 30.Qf3 (better 30.Bh6 de4 31.Nc4+-) 30...Qf3 (30...Rh3 31.Qg3 (31.Qf6? Qe1 32.Qf1 Rh1 33.Kh1 Qf1 34.Kh2 de4-+) 31...Rg3 32.e5+/-) 31.gf3+- Rh3 32.e5 Nh5 33.Kg2 Rg3 34.Kf2 Rh3 35.Ke3 (35.Bg5!? Ng7 36.Kg2 Rh5+-) 35...Ng7+/- 36.Rc7 (36.Bb2 h5+/-) 36...h5 (36...Nf5 37.Kd2+=) 37.Rb7 Rh1? (better 37...Nf5!? 38.Kf4 Nd4+/-) 38.Bd2+- h4 (38...Nf5 39.Kd3 Rf1+-) 39.Kf2?? (39.Ra7 h3 40.Rb7+/-) 39...h3 (39...Rh2 40.Ke1 Nf5 41.Kd1 Nd4 42.Bc3 (worse 42.Ra7 h3 43.Bf4 Ra2=+) 42...Rh1 43.Kd2 Rh2 44.Kd3=) 40.Bf4 (40.Rb8 Kh7 41.Ba5+=) 40...Nh5 41.Bg3 (41.e6 h2 42.Kg2+/- (42.Ra7?? Rf1 43.Kf1 h1Q 44.Kf2 Qh4 45.Kf1 Qf4-+)) 41...Ra1=+ 42.e6?? (42.Rb8 Kf7 43.e6 Ke7 44.Bh4 Ke6 45.Re8 Kd6 46.Rd8 Kc7 47.Rh8-/+) 42...Ra2-+ 43.Ke3 Ng3 44.Rb8 Kg7 45.e7 Nf5 (45...Ra3 46.Kf2 Nh1 47.Ke2 Ra2 48.Ke1 Ra1 49.Ke2 Ng3 50.Kf2 Nh1 51.Ke2+-) 46.Kf4 Ne7 47.Rb7 h2 (better 47...Kf6 48.Rc7 Ra3-+) 48.Re7 Kg6 49.Re1 (49.Re6 Kh5 50.Re7-+) 49...Ra3 50.Rh1 Ra2 51.Ke5 (51.Kg3 Nc4 52.Rh2 Rh2 53.Kh2 Na3-+) 51...Kh5 52.f4 (52.Kf6 Kh4 53.f4 Kg3-+) 52...Kg4 53.f5 Kg3 (53...Nc4!? 54.Kd5 Ne3 55.Kc6 Nf5 56.d5-+) 54.f6 Kg2 55.Re1 h1Q 56.Rh1 Kh1 57.f7 Kg2 58.Ke6 Rf2 59.Ke7 Kg3 (better 59...Nc8 60.Kd8-+) 60.f8Q Rf8 61.Kf8 Kf4 62.Ke7 Ke4 63.Kd6 Kd4 64.Kc6 Plans Kc4 64...Kc4 (64...Kc4 65.Kd6 d4 66.Ke5 d3 67.Ke4 d2 68.Kf4 d1Q 69.Kg5 Kb5 70.Kf4 a5 71.Kf5 Qd3 72.Kf6 Nd5 73.Kg5 Qe3 74.Kf5 Qf4 75.Kg6 Qf6 76.Kh5 Qf5 77.Kh4 Nf6 78.Kg3 Ne4 79.Kh4 Qf4 80.Kh5 Qg5) 0-1. banjoband (2040) - _coco_ (2040), Rated Blitz game, lichess.org, 2014.

6.Nf3 Nd7 7.Qc2 Rc8N 8.Bc4 Bc4 9.Qc4 c6 (9...Ngf6 10.0-0+=) 10.d4= e4 (10...cb5 11.Qb5 ed4 12.0-0=) 11.Nfd2 (11.Ne5 Be5 12.de5 cb5 13.Qb5 a6+=) 11...Nb6+= 12.Qb3 Nf6 13.bc6 Rc6 14.Nc3 Qe7 15.Nb5 Bb8 16.Rc1 Rc1 (16...Qd7 17.Rc6 Qc6 18.Ba3=) 17.Bc1 Nfd5 18.Ba3 Qe6 (18...Qg5 19.Ne4 Qg2 20.Ned6 Kd7 21.Rf1+=) 19.Bc5+= Kd7 (19...Qg6!? 20.0-0 Qh6+=) 20.Bb6+/– Nb6 (20...ab6 21.0-0+/–) 21.Qe6 fe6 22.Ne4 Kc6 (22...Rc8 23.Nc5 Kc6 24.Nc3+/–) 23.Nbc3 e5 24.Ke2 ed4 25.ed4 Rd8 26.Kd3 Nd5 (26...Bf4 27.Rb1+/–) 27.g3 (27.Nd5 Kd5 28.Re1 b5+/–) 27...b5 (27...Nc3 28.Rc1+/–) 28.Nd5 Rd5 (28...Kd5 29.Rb1 Kc6 30.Rc1 Kb6 31.f4+–) 29.f4 (29.Rc1 Kb6 30.Nc5 Bd6+–) 29...Rd8 (29...Bd6 30.Rc1 Kb6 31.Ng5+–) 30.Rc1 Kb6 31.Ng5 h6 (better is 31...g6+–) 32.Ne6 Rd7 33.Rc8 (33.Rc8 Bd6 34.Rg8+–) 1–0. Taulien,Hans_Juergen (2350) – Bekemann,Uwe (2190), remoteschach.de, 2001.

4.c4 c6

5.a4 dc4 6.Nf3 f6 7.e4=+.

5.bc6 dc4 6.cb7 Bb7 7.Na3+=.

5.bc6 bc6 6.d4 (6.Nf3 Nd7 7.cd5 cd5=) 6...e4=+ 7.e3 (7.Nc3 Nf6=+) 7...Nf6 8.Qa4 (8.Nc3 0-0=+) 8...0-0 9.Ba3 (9.Nc3 dc4 10.Bc4 Nbd7 11.Qc6 Nb6–/+) 9...Be6 (9...Ba3 10.Qa3 a5 11.Nc3–/+) 10.Ne2=+ Ba3 (10...dc4 11.Nd2=+) 11.Qa3 a5 12.Nf4 Bf5 (12...Na6 13.Nc3=+) 13.Nc3 (13.cd5 g5 14.Ne2 Na6=) 13...Na6 14.Qa4 (14.cd5 Nb4 15.Rc1 g5–/+) 14...g5 15.Nfe2 Nb4 16.Ng3 Bd7 (16...Bg6 17.h4 Ng4 18.Be2 gh4 19.Nge4 de4 20.Bg4 Nd3 21.Kf1–/+) 17.c5 Qc8 (17...h5 18.h4 gh4 19.Rh4=) 18.a3 (18.Rb1 h6=) 18...Nd3 19.Bd3 ed3 20.Qd1 Qa6 21.0-0 (21.Qf3 Qc4 22.Rc1 Ne8=) 21...Rab8 (21...Rfb8 22.Qf3 Kg7 23.Nh5 Nh5 24.Qh5=) 22.Qd2= 1–0. Mai,Wolfgang (2025) – Samir,Mohammad, AA/C15/pr/A ICCF, 2012.

5.cd5 cd5 6.Nf3 Nd7=+.

5.e3 Nd7 6.a4 (6.Nf3 Ngf6=) 6...Ne7 (6...Ngf6 7.Nf3 0-0 8.cd5 cd5 9.Be2–/+) 7.Nf3 (7.Nc3 0-0+=) 7...e4–/+ 8.Nd4 (8.Bg7? Rg8 9.bc6 bc6–+ (9...Rg7?! 10.cd7 Qd7 11.Nd4=; 9...ef3?! 10.cd7 Bd7 11.Qf3 Rg7 12.cd5–+)) 8...Ne5 9.bc6 bc6 10.Nc3 Ba6 11.cd5 Bf1 12.Kf1 Rb8 13.Rb1 (13.Ba3 Ba3 14.Ra3 cd5–/+) 13...cd5 14.Ncb5 (14.f3 ef3 15.Nf3 f6+=) 14...0-0 (14...a6 15.Nd6 Qd6 16.Ba3 Rb1 17.Qb1= (17.Bd6?? Rd1 18.Ke2 Rh1 19.Be5 f6–+)) 15.Na7+= Nd3 (15...Qd7 16.Nab5 Nd3 17.Bc3+=) 16.Nab5 Nb2 (16...Qd7 17.Bc3+=) 17.Rb2= Be5 18.Rb3 Qa5 19.g3 Qa4 20.Kg2 Rfd8 (20...Qa6 21.Rf1=) 21.Ra3 Qb4 22.Rb3 Qa4 (22...Qa5 23.Ra3 Qb4 24.Rb3=) 23.Ra3 Qc4 24.Rc3 Qb4 25.Rb3 Qc5 26.Qb1 (26.Rc3 Qb4=) 26...Qc8 (26...Rdc8 27.d3=) 27.Rc1 Qg4 28.f4 Bf6 29.h3 Qg6 30.Rc7 (30.Nc6 Nc6 31.Rc6 Qf5+=) 30...h5 31.Nc6 Nf5 32.Qe1 Bh4 Pawn g3, live or die! 33.Ne5 (worse is 33.Nd8 Bg3 (33...Rd8?! 34.Kh1 Ng3 35.Kh2=; 33...Bd8?! 34.Rc5=) 34.Rc6 Be1 35.Rg6 fg6–+) 33...Bg3 34.Qg1 (34.Ng6? Be1 35.Ne7 Ne7 36.Re7 Bd2–+) 34...Qa6 35.Rf7 (35.Nf7 Rb5 36.Qd1 Qa2–+) 35...Rf8 36.Ra7 Qa7 37.Na7 Rb3 38.Qc1 Kh7 39.Nac6 h4 40.Qd1 Rb2 41.Kg1 Rf6 (41...Ra8 42.Ne7 Ne7 43.Qh5 Kg8 44.Qf7 Kh8 45.Qh5 Kg8 46.Qf7 Kh8 47.Qh5 Kg8=) 42.Qc1 (42.Kf1 Bf4 43.ef4 Ng3 44.Kg2 Rf4=) 42...Rb7 (42...Ra2 43.Nb4 Ra5 44.Qc8=) 43.Qa1 Rd6 44.Qd1 Nh6 45.Kg2 (45.Kf1 Rf6 46.Kg2 Rf8+=) 45...Nf5 ½–½. marekt (2230) – emece (2125), gameknot.com, 2016.

5.e3 Nf6 6.cd5 cd5 7.Nf3+=.

5.a4 Nf6

6.e3 0-0 7.d4 e4 8.g3 Bb4 9.Bc3 Bc3 10.Nc3 a6 11.bc6 bc6 12.Bg2 Qa5 13.Qd2 Bg4 14.Ne4 Qd2 15.Nd2 Nbd7 16.Ne2 Rfb8 17.cd5 Nd5 18.Rc1 Be2 19.Ke2 N7f6 20.Rc6 Rb2 21.Rf6! Nc3 (21...Nf6 22.Ba8 Pinning (22.Ba8 Deflection; 22.Ba8 Clearance); 21...gf6 22.Bd5 Remove defender) 22.Kd3 Rc8 23.Ra6 Na2 24.Rc6 Nb4 25.Kc3 Nc6 26.Kb2 Rb8 27.Ka3 Na5 (27...Nb4 28.Be4+–) 28.Rc1 g6 29.Rc5 Nb7 30.Rb5 1–0. usingprogram (1975) – andrzej12, kurnik, 2011.

6.e3 0-0 7.cd5 cd5 8.Nf3 Re8 9.Be2 Bf5 10.0-0 Nbd7 11.d4 e4 12.Nh4 Be6 13.g3 (13.Ba3 Ba3 14.Ra3 Rc8+=) 13...Rc8 14.Ba3 Nb6 15.Bd6 Qd6 16.Qb3 Bh3 17.Ng2 Ng4 (17...Nc4!?–/+) 18.Nd2 Qh6 19.Bg4 Bg4 20.Rfc1 Be2 21.Nf4 Bc4 22.Nc4 Nc4 (22...dc4 23.Qa2 g5 24.Ne2=) 23.Qb4 (23.Rc2!?+=) 23...Qg5+= 24.h4 (24.Rc3 Nb6=) 24...Qf5–/+ 25.Ra2 Rc7 26.Rac2 Rec8 27.Qe1 h6 28.Qe2 Kf8 (better is 28...Qd7!?+=) 29.Qh5+= Qh5 30.Nh5 a6 31.Nf4 ab5 32.ab5 (32.Nd5 Rd7 33.Nf4+/– (33.ab5?! Rd5 34.Rc4 Rc4 35.Rc4 Rb5=)) 32...Rd7= 33.Ra2 (33.b6 Rc6+=) 33...g5 34.hg5 hg5 35.Nh5 Rd6 36.g4 Rb6 37.Rb1 Ke7 38.Ng7 Nd6 39.Rab2 Rg8 40.Nh5 Ra8 41.Ng7 (41.Rc2 Nc4–/+ (worse is 41...Nb5 42.Rc5 Ra5 43.Kg2+=)) 41...Nc4 (41...Ra5 42.f3–/+) 42.Nf5 Kf6 43.Rb4 Ra5 44.Kg2 Na3?? The pressure on the isolated pawn grows (better is 44...Ke6+=) 45.Rh1+– Ke6 46.Rh6 f6 (46...Kd7 47.Rb6 Kc7+–) 47.Ng7 (47.Rh7 Nb5 48.Re7) 47...Kf7 (47...Kd7 48.Nf5=) 48.Nf5= Nc4?? (better is 48...Ke8=) 49.Rb1+– Rab5? (better is 49...Nd6+–) 50.Rbh1 Ne5 (50...Ne3 51.fe3 Rb2 52.Kg3 Ke8+–) 51.Rh7 Ke8 (51...Kf8 52.Rh8 Kf7 53.R1h7 Ke6 54.Re8) 1–0. Pruvost,Alain – Dumas,Victor (1805), 8th Open, La Fere FRA, 2009.

6.e3 0-0 7.cd5 cd5 8.Nf3 Re8 9.Be2 Bg4 10.Nd4 (10.0-0!?+=) 10...Be2 (10...ed4 11.Bg4 Be5 12.0-0 de3 13.Be5 ef2 14.Rf2 Re5 15.Bf3–/+) 11.Ne2 Nbd7 12.0-0 Nc5 (12...Rc8!?–/+) 13.d4+= ed4 14.Nd4 Rc8 15.Nc3 Nce4 16.Ne4 Re4 (16...Ne4!? 17.Qe2 g6+=) 17.Nf3= Ng4 (17...Rec4 18.Bf6 gf6 19.Ra2= (19.Qd5?? Bh2 20.Kh2 Qd5–+)) 18.h3+= Nh6 19.Bd4 (19.Qd5?? Bh2 20.Kh2 Qd5–+) 19...b6 20.Rc1 Bc5 (20...Rc1 21.Qc1 Nf5 22.Qc6+=) 21.Nd2 (21.Qd3 g6+/–) 21...Re8 22.Nb3 Qd6 (22...Bd6 23.Qh5 Rc4 24.Rfd1+/– (24.Qd5?? Bh2 25.Kh2 Qd5–+)) 23.Qd3 (23.Qc2 Rc7+/–) 23...Ba3 24.Rc2 (24.Rc8 Rc8 25.a5 f6+/–) 24...f6 (24...Qg6 25.Qg6 fg6 26.Rc8 Rc8 27.Ra1+/–) 25.a5 Rc7 (25...Nf7 26.Ra1 Rc2 27.Qc2+=) 26.ab6 (26.Rc7 Qc7 27.Ra1 Bd6+/–) 26...ab6 (26...Rc2 27.ba7 Rc4+–) 27.Rc7 Qc7 28.Ra1 Qd6? (better is 28...Bd6!?+/–) 29.Bb6!+– Rc8? (29...Qb6 30.Qd4 Double attack (30.Ra3 Deflection; 30.Qd4 Decoy; 30.Ra3 Overloading)) 30.Bd4 Nf7 31.b6 Nd8 (31...Rb8+–) 32.Qa6 Qc6 (32...Rb8 33.Qa3 Qa3 34.Ra3+–) 33.Qa3 Qd7 (33...Nb7 34.Qa7 Kh8 35.Rc1+–) 34.Qa7 Qb5 (34...Qd6 35.Na5 h5 36.b7 Nb7 37.Nb7+–) 35.Nc5! Rc5 (35...h6+–) 36.Qe7 Rc8 37.Ra7 Ne6 38.Qe6 (38.Qe6 Kh8 39.Qc8 Qe8 40.Qe8) 1–0. Pruvost,Alain – Wolfangel,Claude (1780), La Fere FRA, 2012.

6.e3 0-0 7.cd5 cd5 8.Nf3 Bg4 9.Be2 (9.h3 Bf3 10.Qf3 Nbd7+=) 9...Nbd7 10.Nd4 (10.h3 Bf5–/+) 10...ed4 11.Bg4 Ne5 (worse is 11...Ng4 12.Qg4 Rc8 13.0-0=) 12.Be2 de3 (12...d3 13.Bf3 Rc8 14.0-0–+) 13.fe3 (13.de3!? Bb4 14.Bc3 Bc3 15.Nc3–/+) 13...Ne4–+ 14.Ba3?? (better is 14.0-0 Qh4 15.Rf4–/+) 14...Qh4 15.g3 Ng3! (15...Ng3 16.Qb3 Nh1 17.Kd1 Ba3 18.Qa3 Rac8–+) 0–1. Pruvost,A – Barbaut,M (2030), La Fere FRA, 2012.

6.e3 Bf5 7.Ne2 (7.d4 ed4 8.Bd4 c5+=) 7...0-0 (7...dc4!? 8.Nec3 Bd3–/+) 8.Ng3 (8.d4 Nbd7–/+) 8...Bg6 (8...Be6 9.Qc2–/+) 9.c5 (9.d4 Nbd7+=) 9...Bc5–/+ 10.Be5 Nbd7 11.Bb2 cb5 (11...Re8 12.Be2+=) 12.Bb5 a6 13.Be2 Qb6 14.Ba3 Rac8 15.0-0 Ba3 (15...d4 16.Bg4+=) 16.Ra3 (16.Na3 Rc7+=) 16...Bc2 17.Qe1 Qb4 Attacking the isolated pawn on a4 (17...Qb2 18.Rc3 Nc5 19.Na3 Na4 20.Rc2 Rc2 21.Nc2 Qc2 22.Bd1+=) 18.d4= Qb2 (better is 18...Qd6!? 19.Ra2 Rc7=) 19.Qd2+/– Rc6 20.Bd3 Rfc8 21.Nf5 (21.a5 Kh8=) 21...Kf8 22.Ng3 (22.a5 Ne4 23.Be4 de4+=) 22...Qb6 (22...a5 23.Ne2 Qb4 24.Rc3 Bd3 25.Qd3 Qa4 26.Rc6 Rc6 27.Na3+=) 23.a5 Qc7 24.Bc2 (24.Rc1 Bd3 25.Rc6 Qc6 26.Qd3 Qc1 27.Nf1 Qc2=) 24...Rc2 25.Qb4 Kg8 26.Rb3 Attacking the backward pawn on b7 26...Rb8 27.Nc3 (27.Rc3 Rc3 28.Nc3 Qc4+=) 27...Rc8 (27...Qc4 28.Qa3 Rc8=) 28.Nf5 (28.Nce2 h6=) 28...Rc3 29.Ne7 Kh8 30.Nc8 Rb3 (30...Ng4 31.g3 Rb3 32.Qb3 Qc8 33.Rb1=) 31.Qb3= Qc8 32.Rb1 Qc7 (32...h6 33.Qb7 Qc2 34.Rf1=) 33.Qb7 Qb7 (better is 33...Qc4!?=) 34.Rb7+/– g6 (34...h5 35.Rc7+/–) 35.Ra7 Kg7 (35...Nb8!? 36.Rf7 Nfd7+/–) 36.Ra6+– Nb8? (36...Ne4+–) 37.Rb6 Nbd7 (37...Nfd7 38.Rd6 Nf6+–) 38.Rb7 Kf8 (38...h6+–) 39.a6 Ke7 40.a7 (40.a7 Kd6 41.a8Q+–) 1–0. Pruvost,Alain – Holland,Christophe (1700), 7e open Herlies, 2002.

6.cd5 cd5

7.Nf3 e4=+.

7.e3 0-0

8.Nf3 Qe7

9.a5 A) 9...Bf5 A1) 10.d4 Bb4 (10...e4 11.Ne5 Qc7 12.Ra4 Rc8 13.Ba3 Ba3 14.Ra3 Qe7 15.Qd2 Nbd7=) 11.Nbd2 Ne4 12.de5 Bg4 13.Bc1 Rc8 14.h3 Bf3 15.gf3 Qe5–/+; A2) 10.Ba3 Bg4 (10...Ba3 11.Na3 Qc7 12.Qc1 Qa5 13.Ne5 Rc8 14.Qb2 Qc7 15.d4 Ne4+=; 10...d4 11.Bc4 Rc8 12.Bd6 Qd6 13.Qb3 Rc7 14.ed4 e4 15.Ng5 Bg6+=; 10...Nbd7 11.Bd6 Qd6 12.d4 e4 13.Nfd2 Rfc8 14.Be2 Rc7 15.0-0 Rac8+=) 11.Bd6 Qd6 12.h3 Bf3 13.Qf3 Nbd7 14.Be2 Rfc8 15.0-0 Rc2–/+ ; A3) 10.Be2 Rc8 (10...Nbd7 11.d4 e4 12.Nfd2 Rfc8 13.Ba3 Rc7 14.Bd6 Qd6 15.0-0 Rac8+=; 10...Qc7 11.Nc3 Nbd7 12.0-0 Rfc8 13.b6 ab6 14.Nb5 Qc6 15.d4 Bc2=; 10...Re8 11.0-0 Nbd7 12.d4 e4 13.Nfd2 Bc7 14.Ba3 Qe6 15.Bb4 Rac8=) 11.Nc3 Nbd7 12.0-0 Rc7 13.b6 ab6 14.ab6 Rcc8 15.Ra8 Ra8+=; A4) 10.Nc3 d4 11.Ne2 de3 12.fe3 Rc8 13.Ng3 Bd7 14.Rc1 e4 15.Rc8 Bc8+=; B) 9...Bg4 B1) 10.Be2 a6 (10...Rc8 11.h3 Bf3 12.Bf3 a6 13.b6 Nc6 14.Nc3 d4 15.Nd5 Nd5+=; 10...Qc7 11.h3 Bh5 12.0-0 Rc8 13.Nc3 e4 14.Nd4 Be2 15.Qe2 Qd8=; 10...e4 11.Nd4 Be2 12.Qe2 Rc8 13.0-0 Nbd7 14.d3 Nc5 15.de4 de4=) 11.d4 e4 12.Ne5 Bb4 13.Bc3 Be2 14.Qe2 Rc8 15.Qd2 Bd6–/+ ; B2) 10.h3 Bh5 (10...Bf5 11.d4 e4 12.Ne5 Rc8 13.Ba3 Ba3 14.Na3 Nbd7 15.Nd7 Qd7+=; 10...Bf3 11.Qf3 Rc8 12.Nc3 e4 13.Qf5 Qd7 14.Qd7 Nbd7 15.a6 b6=; 10...Bc8 11.Ba3 d4 12.Bc4 de3 13.de3 Ba3 14.Na3 Rd8 15.Qb3 Bf5=) 11.Be2 a6 12.b6 Nc6 13.0-0 Rac8 14.Bc3 e4 15.Nd4 Be2+= ; C) 9...e4 10.Nd4 Be6 (10...Qc7 11.b6 Qe7 12.ba7 Nc6 13.Nb5 Bb4 14.Ra4 Be6 15.Bf6 Qf6=; 10...Bd7 11.Be2 Rc8 12.Qb3 Bc5 13.0-0 a6 14.Rc1 ab5 15.Bb5 Nc6=; 10...a6 11.Qb3 Qd8 12.Nc3 Be5 13.Na4 Nbd7 14.ba6 Qa5 15.Bc3 Qc7=) 11.Ne6 fe6 12.Nc3 Nbd7 13.a6 Nc5 14.ab7 Qb7 15.Ba3 Rac8+=; D) 9...a6 D1) 10.b6 Bg4 (10...Bf5 11.Be2 Rc8 12.0-0 Bc2 13.Qc1 Nbd7 14.Nc3 Bf5 15.Qd1 Rc6+=; 10...Nc6 11.Be2 Bf5 12.0-0 Rac8 13.d4 e4 14.Nfd2 Nb4 15.Ba3 Rfd8+=; 10...Bd7 11.d4 e4 12.Ne5 Rc8 13.Ba3 Nc6 14.Bd6 Qd6 15.Nd7 Nd7+= ) 11.Be2 Nc6 12.0-0 Rac8 13.Bc3 Rfe8 14.h3 Bd7 15.d4 e4+= ; D2) 10.Nc3 d4 (10...Bg4 11.Qb3 d4 12.Nd5 Nd5 13.Qd5 de3 14.fe3 Be6 15.Qd3 Nd7+=; 10...Nbd7 11.Be2 ab5 12.Nb5 Bb4 13.Bc3 b6 14.ab6 Ra1 15.Ba1 Ba5=) 11.Na4 de3 12.fe3 Nfd7 13.Qb3 ab5 14.Bb5 Ra5 15.0-0 Nc6–/+; D3) 10.Be2 ab5 (10...Bg4 11.d4 e4 12.Ne5 Bb4 13.Bc3 Be2 14.Qe2 Rc8 15.Qd2 Bd6–/+) 11.Bb5 Nc6 12.Bc6 bc6 13.Qc2 Ra6 14.d3 Bg4 15.Nbd2 Rfa8–/+; D4) 10.Qb3 Rd8 (10...Nbd7 11.Qc2 Re8 12.b6 Nf8 13.d4 e4 14.Ne5 N8d7 15.Nd7 Bd7+=; 10...Bg4 11.d4 Bf3 12.gf3 ab5 13.Bb5 Bb4 14.Kd1 ed4 15.Ra4 Bd6+=; 10...Bf5 11.Nc3 d4 12.Nd5 Nd5 13.Qd5 de3 14.fe3 Be6 15.Qd3 Nd7+=) 11.d4 e4 12.Ne5 ab5 13.Bb5 Nbd7 14.Nd7 Bd7 15.Ba3 Bb5+=.

9.d3 A) 9...a6 A1) 10.Nbd2 Bg4 (10...Bf5 11.d4 e4 12.Ne5 Rc8 13.Be2 ab5 14.ab5 Nbd7 15.Nd7 Qd7–/+; 10...Bd7 11.Be2 ab5 12.ab5 Ra1 13.Qa1 Re8 14.0-0 Ng4 15.h3 Nf6=; 10...Nbd7 11.Be2 b6 12.0-0 Bb7 13.Nh4 Qe6 14.d4 e4 15.f3 g5+=) 11.h3 Bf3 12.gf3 Bc5 13.Qe2 ab5 14.d4 ed4 15.ed4 Qc7–/+ ; A2) 10.ba6 ba6 (10...Na6 11.Be2 Bf5 12.0-0 Rfc8 13.a5 Qe6 14.Nc3 e4 15.Nd4 Qe5+=; 10...b6 11.Be2 Ba6 12.Nc3 Nc6 13.Rc1 Bc5 14.0-0 d4 15.ed4 Nd4+=) 11.Nbd2 Nc6 12.Be2 Rb8 13.Rb1 Bf5 14.0-0 Rb4 15.Qc2 Rc8+=; A3) 10.b6 Bb4 (10...Nc6 11.Nbd2 Re8 12.Be2 Bb4 13.Rb1 Qd8 14.0-0 a5 15.d4 e4+=; 10...a5 11.d4 e4 12.Ne5 Nbd7 13.Nd7 Nd7 14.Qb3 Bb4 15.Bc3 Nb6–/+; 10...Bf5 11.Be2 Nc6 12.0-0 Rfe8 13.d4 e4 14.Nfd2 Nd7 15.Qb3 Nb4+=) 11.Nbd2 Nc6 12.Rc1 Nd7 13.Qb3 d4 14.ed4 ed4 15.Kd1 Nb6–/+ ; A4) 10.Be2 Bf5 (10...ab5 11.ab5 Ra1 12.Ba1 Bg4 13.0-0 Rc8 14.Qd2 Nbd7 15.h3 Bh5+=; 10...Bg4 11.Nc3 ab5 12.ab5 Ra1 13.Qa1 Rc8 14.h3 Bf3 15.Bf3 e4+=; 10...Bd7 11.Nc3 Rc8 12.0-0 Bg4 13.a5 Nbd7 14.b6 e4 15.Nd4 Qe5= ) 11.Nc3 ab5 12.ab5 Nbd7 13.0-0 Ra1 14.Ba1 Rc8 15.Qd2 Bb4+= ; B) 9...Bf5 B1) 10.Be2 Nbd7 (10...a6 11.Nc3 ab5 12.ab5 Nbd7 13.0-0 Ra1 14.Ba1 Rc8 15.Qd2 b6+=; 10...Rc8 11.0-0 Nbd7 12.a5 Rc7 13.Ba3 Rac8 14.Bd6 Qd6 15.d4 e4+=; 10...Re8 11.0-0 Nbd7 12.Nc3 Rac8 13.a5 Rc7 14.a6 ba6 15.Ra6 Rec8+=) 11.0-0 a6 12.Nc3 Rfc8 13.a5 ab5 14.Nb5 Bb4 15.Nh4 Be6–/+ ; B2) 10.a5 Rc8 (10...a6 11.ba6 ba6 12.d4 Bb4 13.Nbd2 e4 14.Ne5 Rc8 15.Qa4 Nfd7–/+; 10...Nbd7 11.Be2 Rac8 12.0-0 Rc7 13.Ba3 Rfc8 14.Bd6 Qd6 15.d4 e4+=; 10...Rd8 11.Be2 Nbd7 12.0-0 Rac8 13.Nbd2 Rc7 14.Rc1 Rc1 15.Qc1 Qe8+=) 11.Be2 a6 12.ba6 ba6 13.0-0 Nc6 14.d4 e4 15.Ne5 Ne5–/+ ; B3) 10.Ba3 Ba3 (10...d4 11.Be2 de3 12.fe3 Ba3 13.Na3 e4 14.Nd4 Bg6 15.Nc4 Nd5+=; 10...Nbd7 11.Bd6 Qd6 12.d4 e4 13.Nfd2 Rac8 14.Be2 Rc7 15.0-0 Rfc8+=; 10...Rc8 11.Bd6 Qd6 12.Be2 d4 13.0-0 de3 14.fe3 Ng4 15.Qd2 Qb6= ) 11.Na3 Bg4 12.Be2 Bf3 13.Bf3 Qb4 14.Kf1 Nbd7 15.d4 e4+= ; B4) 10.Nbd2 Re8 (10...Rc8 11.Be2 Nbd7 12.0-0 a6 13.Qb1 Rc7 14.Rc1 Rc1 15.Qc1 Bg4+=; 10...a6 11.Be2 Rc8 12.0-0 Nbd7 13.Qb1 Rc7 14.Rc1 Rc1 15.Qc1 Bg4+=; 10...Nbd7 11.Be2 Rfc8 12.0-0 a6 13.Qb1 Rc7 14.Rc1 Rac8 15.Rc7 Rc7+=) 11.Rc1 Nbd7 12.Be2 a6 13.0-0 ab5 14.ab5 Rec8 15.Rc8 Rc8+= ; C) 9...Bd7 C1) 10.d4 e4 (10...Bb4 11.Bc3 e4 12.Ne5 Bd6 13.Be2 Bf5 14.Nd2 Nbd7 15.Nd7 Nd7+=) 11.Ne5 Rc8 12.Be2 a6 13.0-0 ab5 14.ab5 Ra1 15.Ba1 Bf5+=; C2) 10.Nbd2 Rc8 (10...a6 11.d4 e4 12.Ne5 Rc8 13.Be2 ab5 14.ab5 Ra1 15.Qa1 Bf5+=; 10...Bg4 11.Be2 Rc8 12.0-0 a6 13.b6 a5 14.Qb3 Nbd7 15.Rfc1 Re8–/+; 10...Bf5 11.Be2 Nbd7 12.0-0 Rfc8 13.a5 a6 14.b6 Rc6 15.Rc1 Rac8+=) 11.d4 e4 12.Ne5 Bf5 13.a5 a6 14.Qa4 ab5 15.Qb5 Nc6–/+; C3) 10.Qb3 Bg4 (10...Rc8 11.Be2 Bf5 12.0-0 Nbd7 13.a5 Rc7 14.b6 Rc6 15.ba7 Ra7+=; 10...a6 11.Be2 Rc8 12.0-0 ab5 13.ab5 Ra1 14.Ba1 Bg4 15.h3 Bf5+=; 10...Bf5 11.Be2 Nbd7 12.0-0 Rfc8 13.a5 Rc7 14.b6 Rc6 15.ba7 Ra7+= ) 11.Be2 Nbd7 12.0-0 e4 13.de4 de4 14.Nd4 Be2 15.Ne2 Nc5–/+ ; C4) 10.Be2 Bg4 (10...Rc8 11.0-0 a6 12.Nc3 Qe6 13.Rc1 b6 14.Qb3 Be7 15.Ng5 Qd6+=; 10...a6 11.Nc3 Rc8 12.0-0 Bg4 13.a5 Nbd7 14.b6 e4 15.Nd4 Qe5=; 10...Bf5 11.0-0 Nbd7 12.Nc3 Rfc8 13.a5 Rc7 14.b6 ab6 15.ab6 Rcc8=) 11.0-0 Rc8 12.a5 Nbd7 13.Nbd2 Rc7 14.Rc1 e4 15.Nd4 Qe5+= ; D) 9...Bg4 D1) 10.h3 Bb4 (10...Bf3 11.Qf3 Rc8 12.Ra2 Bb4 13.Kd1 Qc7 14.Qe2 Nbd7 15.g4 a6–/+; 10...Bf5 11.Be2 a6 12.g4 Bg6 13.Nc3 e4 14.Nh4 Bb4 15.Ng6 hg6=; 10...Bd7 11.Be2 a6 12.Nc3 Rc8 13.0-0 Qe6 14.d4 e4 15.Ne5 Be5–/+) 11.Nbd2 Bf3 12.gf3 d4 13.Qe2 Rc8 14.Rc1 Rc1 15.Bc1 Qc5–+; D2) 10.Nbd2 a6 (10...Rc8 11.Be2 a6 12.0-0 b6 13.a5 ba5 14.Ra5 Kh8 15.h3 Bh5+=; 10...Nbd7 11.Be2 Rfc8 12.0-0 Rc7 13.h3 Bf5 14.Rc1 Rc1 15.Qc1 a6+=; 10...Re8 11.h3 Bf5 12.g4 Bc8 13.a5 a6 14.Qb3 d4 15.g5 Nfd7+=) 11.Be2 Rc8 12.0-0 ab5 13.ab5 Nbd7 14.Ra8 Ra8 15.Qc2 e4–/+; D3) 10.a5 Qc7 (10...a6 11.ba6 ba6 12.Be2 Nc6 13.0-0 Qc7 14.h3 Rab8 15.Bc3 Bh5–/+; 10...Rc8 11.Be2 a6 12.ba6 ba6 13.0-0 Nc6 14.Bc3 Rab8 15.h3 Bh5–/+; 10...e4 11.h3 Bh5 12.g4 Bg6 13.Nh4 Be5 14.Ng6 fg6 15.Be5 Qe5=) 11.Nbd2 Nbd7 12.Be2 Rfc8 13.0-0 e4 14.de4 de4 15.Rc1 ef3–/+ ; D4) 10.Be2 a6 (10...Rc8 11.0-0 a6 12.h3 Bf5 13.b6 Nc6 14.Nbd2 Nb4 15.Qb3 a5+=; 10...Nbd7 11.0-0 a6 12.Nc3 Rfc8 13.Rc1 e4 14.Nd4 Qe5 15.g3 Bh3+=; 10...a5 11.0-0 Rc8 12.h3 Bf5 13.Nc3 Nbd7 14.Rc1 Rc7 15.e4 de4+=) 11.0-0 ab5 12.ab5 Ra1 13.Ba1 Rc8 14.Nc3 Nbd7 15.h3 Bf5+=.

9.d4 e4 A) 10.Ne5 Nbd7 (10...Bf5 11.a5 Qc7 12.Ra4 Rc8 13.Ba3 Ba3 14.Ra3 Nbd7 15.Nd7 Bd7=; 10...Re8 11.Ba3 Ba3 12.Na3 Qb4 13.Qd2 Qd6 14.Be2 Nbd7 15.Nd7 Bd7=; 10...Rd8 11.Ba3 Ba3 12.Na3 Ne8 13.h3 f6 14.Ng4 Bg4 15.hg4 Qb4+=) 11.Nd7 Bd7 12.Ba3 Ba3 13.Ra3 Rfc8 14.Qd2 Rc7 15.Rc3 Rc3+=; B) 10.Ng1 Bf5 (10...Be6 11.Ba3 Ba3 12.Ra3 Qb4 13.Rc3 Rc8 14.Ne2 a6 15.Qb3 Qa5+=; 10...Bg4 11.Be2 Be2 12.Ne2 a6 13.Nbc3 Rc8 14.Qb3 ab5 15.Nb5 Nc6+=; 10...Nbd7 11.Nd2 a6 12.Rc1 ab5 13.Bb5 Nb6 14.Ne2 Bd7 15.Nc3 Bb4–/+) 11.Ba3 Ba3 12.Ra3 Qb4 13.Rc3 Rc8 14.Ne2 Nbd7 15.Qb3 Qa5–/+; C) 10.Nfd2 Bf5 (10...Be6 11.Ba3 Nbd7 12.Bd6 Qd6 13.Be2 Rfc8 14.a5 Rc7 15.0-0 Rac8+=; 10...Re8 11.Be2 a6 12.Ba3 ab5 13.Bb5 Bg4 14.Qb3 Nc6 15.Bc6 bc6=; 10...Bg4 11.Qb3 Rc8 12.Nc3 Be6 13.Ba3 Nbd7 14.Bd6 Qd6 15.a5 Qc7+=) 11.Ba3 Bg4 12.Bd6 Qd6 13.Qb3 Nbd7 14.h3 Be6 15.Be2 Rfc8+=.

9.Be2 a6 A) 10.0-0 Bg4 (10...e4 11.Nd4 Qe5 12.g3 ab5 13.Bb5 Bh3 14.Re1 Rc8 15.d3 Nc6+=; 10...ab5 11.ab5 Ra1 12.Ba1 Bg4 13.d4 e4 14.Ne5 Be2 15.Qe2 Rc8+=; 10...Bf5 11.Nc3 Nbd7 12.a5 Rfc8 13.b6 Rc6 14.Rc1 d4 15.Nh4 Be6+=) 11.h3 Bf5 12.Nc3 Nbd7 13.a5 Rfc8 14.b6 Rc6 15.Rc1 d4+=; B) 10.ba6 ba6 (10...Na6 11.Nc3 Bg4 12.Nb5 e4 13.Nfd4 Be2 14.Qe2 Nc5 15.0-0 Be5+=; 10...e4 11.Bf6 Qf6 12.ab7 Bb7 13.Nd4 Nc6 14.Nb3 d4 15.Bb5 Be5+=; 10...b6 11.Qb3 Ba6 12.Nc3 Be2 13.Ke2 e4 14.Nd4 Qb7 15.Nf5 Bc5+=) 11.d4 e4 12.Nfd2 Nc6 13.Ba3 Nb4 14.Nc3 Be6 15.0-0 Bh2–/+; C) 10.b6 Bg4 (10...Nc6 11.0-0 Bd7 12.d4 e4 13.Nfd2 Rac8 14.Ba3 Na5 15.Qe1 Bg4+=; 10...Bf5 11.0-0 Nc6 12.d4 e4 13.Nfd2 Nd7 14.a5 Qg5 15.Re1 Bh3+=; 10...Bd7 11.d4 e4 12.Ne5 Rc8 13.0-0 Nc6 14.Nd7 Nd7 15.Bg4 Nb4+=) 11.a5 Nc6 12.0-0 Rac8 13.Bc3 Rfe8 14.h3 Bd7 15.d4 e4+=; D) 10.Nc3 Bf5 (10...Bg4 11.h3 Bf3 12.Bf3 e4 13.Be2 Nbd7 14.0-0 Qe5 15.f4 ef3+=; 10...Be6 11.0-0 Rc8 12.a5 Nbd7 13.Ng5 ab5 14.Ne6 Qe6 15.Nb5 Bb4+=; 10...b6 11.Qb3 Be6 12.d4 e4 13.Ng5 ab5 14.Ne6 ba4 15.Nd5 Qe6=) 11.0-0 Nbd7 12.a5 Rfc8 13.b6 Rc6 14.Rc1 d4 15.Nh4 Be6+=.

9.Be2 Bf5 A) 10.Nc3 Rc8 (10...Nbd7 11.0-0 Rfc8 12.Rc1 a6 13.ba6 ba6 14.Nh4 Be6 15.Nf3 Rc7+=; 10...a6 11.Qb3 Be6 12.d4 e4 13.Ng5 Nbd7 14.a5 Bf5 15.0-0 Bg4=; 10...Bg4 11.d3 Rc8 12.Rc1 a6 13.0-0 Nbd7 14.h3 Bf5 15.Qb3 e4+=) 11.0-0 Nbd7 12.Rc1 a6 13.ba6 ba6 14.Nh4 Be6 15.Nf3 Rc7+=; B) 10.a5 a6 (10...Nbd7 11.d4 e4 12.Nfd2 Rac8 13.Ba3 Rc7 14.Bd6 Qd6 15.0-0 Rfc8+=; 10...Qc7 11.Nc3 Nbd7 12.0-0 Rfc8 13.b6 ab6 14.Nb5 Qc6 15.d4 Bc2=; 10...Rc8 11.Nc3 Nbd7 12.0-0 Rc7 13.b6 ab6 14.ab6 Rcc8 15.Ra8 Ra8+=) 11.0-0 ab5 12.Bb5 Nc6 13.Bc3 Qc7 14.Bc6 bc6 15.d4 e4–/+; C) 10.0-0 Rc8 (10...a6 11.Nc3 Nbd7 12.a5 Rfc8 13.b6 Rc6 14.Rc1 d4 15.Nh4 Be6+=; 10...e4 11.Nd4 Qe5 12.g3 Bh3 13.f4 Qe7 14.Rf2 Nbd7 15.a5 Rfc8+=; 10...Nbd7 11.d4 e4 12.Nfd2 Rfc8 13.Ba3 Ba3 14.Ra3 Rc7 15.Rc3 Rac8=) 11.Nc3 Nbd7 12.a5 Rc7 13.b6 ab6 14.ab6 Rcc8 15.Ra8 Ra8+=; D) 10.d4 e4 11.Nfd2 Rc8 12.Ba3 a6 13.Bd6 Qd6 14.Na3 Rc3 15.Nab1 Rc7+=.

9.Be2 Bg4 10.Ng5 (10.a5 a6 (10...Rc8 11.0-0 Nbd7 12.h3 Bf5 13.Nc3 Rc7 14.b6 ab6 15.ab6 Rcc8+=; 10...Qc7 11.h3 Bf3 12.Bf3 e4 13.Bf6 ef3 14.Bc3 fg2 15.Rg1 Be5=; 10...Nbd7 11.d3 Rfc8 12.0-0 Rc7 13.h3 Bf5 14.Ba3 Rac8 15.Bd6 Qd6+=) 11.d4 e4 12.Ne5 Be2 13.Qe2 ab5 14.Qb5 Nc6 15.Nc6 bc6–/+; 10.d3 a6 (10...Rc8 11.0-0 Nbd7 12.a5 Rc7 13.h3 Bf5 14.Ba3 Rac8 15.Bd6 Qd6+=; 10...Nbd7 11.0-0 Rfc8 12.h3 Bf5 13.a5 Rc7 14.Ba3 Rac8 15.Bd6 Qd6+=; 10...a5 11.0-0 Rc8 12.h3 Bf5 13.Nc3 Nbd7 14.Rc1 Rc7 15.e4 de4+=) 11.0-0 ab5 12.ab5 Ra1 13.Ba1 Rc8 14.Nc3 Nbd7 15.h3 Bf5+=; 10.Ba3 Nbd7 (10...Bf3 11.Bf3 Ba3 12.Na3 e4 13.Be2 Rc8 14.0-0 Nbd7 15.d4 Rc3+=; 10...Rc8 11.0-0 Nbd7 12.Bd6 Qd6 13.d4 e4 14.Nfd2 Be2 15.Qe2 Rc7+=; 10...Ba3 11.Na3 Bf3 12.Bf3 e4 13.Be2 Rc8 14.0-0 Nbd7 15.d4 Rc3+=) 11.Bd6 Qd6 12.0-0 a6 13.ba6 ba6 14.d4 e4 15.Nfd2 Be2+=; 10.d4 e4 11.Ne5 Be2 12.Qe2 Nbd7 13.Nd7 Nd7 14.Nc3 Rfc8 15.0-0 Nf6+=) 10...Be2 (10...Bf5 11.0-0 Rc8 12.d3 Nbd7 13.a5 Rc7 14.Ba3 Ne8 15.Nf3 Rac8+=; 10...Bd7 11.Nf3 Rc8 12.0-0 e4 13.Nd4 Qe5 14.g3 a6 15.f3 ab5+=; 10...Qd7 11.d4 Qf5 12.Bg4 Ng4 13.Nh3 Rd8 14.de5 Ne5 15.Be5 Be5+=) 11.Qe2 Nbd7 (11...Rc8 12.Nc3 h6 13.Nh3 a6 14.0-0 d4 15.Nd1 ab5+=) 12.Nf3 (12.0-0 e4 13.d3 ed3 14.Qd3 Bh2 15.Kh2 Ng4–/+) 12...Rac8 (12...e4 13.Nd4 Nc5 14.0-0 Qc7 15.f4 Nd3–/+) 13.0-0 Rc4 (13...Rc7 14.d3 Rfc8 15.Nbd2 Rc2–/+) 14.d4 (14.Nc3 Rfc8 15.Rac1 R4c7+=) 14...e4 15.Ne5 (15.Nfd2 Rc2–/+) 15...Ne5 (15...Be5?! 16.de5 Ne5 17.Ba3=) 16.de5 Be5 17.Ba3 Bd6 (better is 17...Bh2 18.Kh1 Bd6–+) 18.Rc1?? (better is 18.Bd6 Qd6 19.Nd2–/+) 18...Rc1–+ 19.Bc1 Qe5 (19...Qe5 20.Qb2 Rc8–+ (worse is 20...Qh2 21.Kf1–+)) 0–1. Pruvost,Alain (1645) – Dumas,Victor (1925), 10th La Fere Open, 2011.

9.Be2 Ng4 A) 10.d3 Qf6 (10...Bf5 11.Nc3 Nf6 12.0-0 Rc8 13.Qb3 Nbd7 14.d4 e4 15.Nd2 Qe6+=; 10...Nf6 11.0-0 Bf5 12.Nc3 Nbd7 13.Rc1 Rac8 14.Re1 Rc7 15.e4 de4+=; 10...Rd8 11.a5 a6 12.h3 Nf6 13.ba6 ba6 14.d4 e4 15.Ne5 Qc7+=) 11.h3 Nh6 12.Nc3 Be6 13.Qb3 d4 14.Nd5 Qd8 15.e4 Qa5+=; B) 10.a5 Rd8 (10...e4 11.Nd4 Qh4 12.Bg4 Bg4 13.Qb3 Nd7 14.Qd5 Nc5 15.Ra3 Rfd8+=; 10...Bd7 11.Nc3 Be6 12.d4 e4 13.Nd2 Nf6 14.0-0 Re8 15.Qb3 Rc8=; 10...Re8 11.h3 Nf6 12.0-0 Bf5 13.d4 e4 14.Ne5 Qe6 15.Nd2 Rc8=) 11.Nc3 Be6 12.d4 e4 13.Nd2 Qh4 14.Bg4 Bg4 15.Qa4 Be6–/+; C) 10.h3 Nh6 (10...Nf6 11.Nc3 Bf5 12.0-0 Nbd7 13.Rc1 Rfc8 14.d4 e4 15.Nd2 Rc7+=) 11.0-0 Nf5 12.a5 e4 13.Nd4 Qe5 14.f4 ef3 15.Bf3 Nh4–/+; D) 10.Nc3 Be6 11.Rc1 Nd7 12.h3 Ngf6 13.0-0 Rfc8 14.d4 e4 15.Ng5 Rc7+=.

4.c4 d4

5.e3 Bc5 6.Nf3 f6 7.Nd4+/- ed4 (better 7...Nh6!?+/-) 8.Qh5+- g6 9.Qc5 Qd6? (better 9...de3 10.Qe3 Kf7+-) 10.Qd4 Qd4 11.Bd4 Kf7 12.Nc3 c6 13.Ne4 Nd7 14.Nd6 Kg7 (14...Ke7 15.c5 Nh6+-) 15.Ne8 (worse 15.Nc8 Rc8 16.Ba7 Ne7+-) 15...Kf7 16.Nc7 Rb8 (16...c5 17.Bc5 Nc5 18.Na8+-) 17.Ba7 Ne7 18.d4 c5 (18...Rd8 19.c5 cb5 20.Bb5+-) 19.dc5 Nc5 (19...h6 20.a4+-) 20.Bb8 1-0. DEFFM – GuestFCNF, freechess.org, 2021.

5.e3 Qe7 A) 6.ed4 ed4 7.Qe2 c5 8.bc6 Nc6 9.Nf3 Bc5 10.Qe7 Nge7 11.Ba3 b6 12.Bd3+=; B) 6.Nf3 B1) 6...Bg4 7.Be2 (7.h3 Bh5 8.Be2 de3 9.de3 Nf6 10.g4 Bg6 11.c5 Bc5 12.Ne5+=) 7...de3 8.de3 Nd7 9.Nc3 Ngf6 10.Nd5 Nd5 11.cd5 Bb4 12.Kf1+=; B2) 6...de3 7.de3 Nf6 8.c5 Bc5 9.Be5 Bg4 10.Nbd2 Bb4 11.Bf6 Qf6 12.Rc1=; B3) 6...Nd7 7.ed4 e4 8.Ng1 Ndf6 9.c5 Bf4 10.Ne2 Bg5 11.Nbc3 Bd7 12.Qa4+=; B4) 6...c5 7.d3 (7.bc6 Nc6 8.Be2 de3 9.de3 Nf6 10.Nc3 0-0 11.Nd5 Nd5 12.cd5+=; 7.ed4 ed4 8.Be2 Bf5 9.d3 Nf6 10.0-0 0-0 11.Re1 Re8 12.a4+=; 7.e4 Nf6 8.Qc2 a6 9.Na3 0-0 10.Be2 Nh5 11.0-0 Nf4 12.Rfe1–/+) 7...a6 8.Qa4 Nd7 9.Be2 f5 10.ed4 cd4 11.0-0 Nc5 12.Qa5+=; C) 6.Qe2 C1) 6...de3 7.Qe3 (7.de3 Nf6 8.Nf3 e4 9.Nd4 0-0 10.Nc3 Rd8 11.Rd1 a6 12.Qc2+=) 7...Nd7 8.Nf3 Ngf6 9.d4 Ng4 10.Qe2 e4 11.Nfd2 Ndf6 12.h3+=; C2) 6...c5 7.bc6 (7.f4 Nd7 8.Nh3 Ngf6 9.ed4 ed4 10.Qe7 Ke7 11.Bd3 Nb6 12.f5–/+; 7.e4 Nf6 8.Nf3 0-0 9.Qd3 b6 10.Qc2 a6 11.ba6 Na6 12.a3–/+; 7.a4 Nf6 8.ed4 cd4 9.Nf3 0-0 10.a5 Re8 11.Ba3 Ba3 12.Na3–/+) 7...Nc6 8.ed4 Nd4 9.Bd4 ed4 10.Nf3 Bg4 11.Qe7 Ne7 12.Be2+=; D) 6.Be2 D1) 6...de3 7.de3 Nf6 8.Nf3 0-0 9.Nbd2 Nbd7 10.Qc2 e4 11.Nd4 Nc5 12.0-0+=; D2) 6...Nh6 7.Nf3 (7.ed4 ed4 8.Bd4 Nf5 9.Bc3 0-0 10.d4 Re8 11.c5 Bf4 12.g3=) 7...c5 8.bc6 Nc6 9.ed4 e4 10.Ng1 Qg5 11.Bf1 0-0 12.c5=; D3) 6...Nf6 7.ed4 ed4 8.Bd4 0-0 9.Nf3 Re8 10.Nc3 c5 11.Be3 Bf5 12.0-0+=; D4) 6...c5 7.d3 (7.bc6 Nc6 8.Nf3 de3 9.de3 Nf6 10.Nc3 0-0 11.Nd5 Nd5 12.cd5+=; 7.Bg4 Nd7 8.d3 Ngf6 9.Bf5 0-0 10.Nf3 Nb6 11.Nh4 e4 12.Bc8+=; 7.Bf3 Nf6 8.d3 0-0 9.Nd2 a6 10.ba6 Ra6 11.Ne2 Nc6 12.0-0+=) 7...a6 8.Na3 Nf6 9.Nf3 0-0 10.0-0 Bf5 11.e4 Bg4 12.Bc1+=.

5.Nf3 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Qb6 9.Qb3 Qb3 10.ab3 Nb4 11.0-0 Nf6 12.Rc1 (< 12.ed4 e4 13.c5 ef3 14.Bb5 Bd7 15.Bd7 Kd7 16.cd6 fg2 17.Kg2 a6–/+) 12...e4 13.Nd4 Be2 14.Ne2 Nd3 15.Rc2 Ng4 16.Ng3 Nb4 17.Rc3 Bg3 18.fg3 a5 19.Ba3 (19.h3!? Nf6 20.c5=+) 19...Nd3=+ 20.Rc2 f5 21.Nc3 Nf6 (21...Ra6 22.Nd5 Rh6 23.h3+/–) 22.Rca2 h5 23.Bd6 b6 24.Bc7 Ra6 25.Nb5 Kd7 26.Rf1 g6 27.h3 Kc6 28.Bf4 Raa8 29.Rb1 Nh7 (29...Rhd8 30.Nd4 Kd7 31.Bg5=+) 30.Bh6 Nf8 31.Bg7 Rg8 32.Bf6 Ne6 33.Nd4 Nd4 34.ed4 Kd6 35.Bg5 Kd7 36.Rf1 Nb4 37.Ra4 b5 38.cb5 Rgb8 39.b6 Rb6 40.Rc1 Nd3 41.Rc3 Rb4 42.Bf4 Ra6 ½–½. Tiedemann,Joern (1810) – Seiler,Werner (2220), RSS7E adv–28, 2006.

5.Nf3 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Bc5 9.Nd4+= ed4 (9...Qd4 10.ed4) 10.Bg4+/– Nf6 11.Bh3 0-0 12.0-0 Re8 13.Na3 a6 14.Nc2 d3 15.Ne1 Ne4 16.Bf5 Bd6 (better is 16...Qg5!? 17.Be4 Re4 18.Nd3 Rc4+/–) 17.Qg4+– (17.Nd3?! Bh2 18.Kh2 Qd3+=) 17...Nf6 18.Bf6 Qf6 19.Nd3 h5 20.Qh3 (20.Qh5?! g6 21.Bg6 fg6 22.Qd5 Kh8+=) 20...Bc7 (20...Ne5 21.Qh5 Nc4 22.Qh7 Kf8 23.Rab1+–) 21.Rab1 (21...b6 22.c5 bc5 23.Nc5= (23.Qh5?! g6 24.Qg4 c4+=); 21.Qh5?! g6 22.Qg4 Qf5 23.Qf5 gf5+=). Taulien,Hans_Juergen – Stark,Lars, remoteschach.de, 2002.

5.Nf3 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 de3!? 9.de3 Nf6=+.

5.Nf3 c5 6.bc6 Nc6 7.e3 Bg4 8.Be2 Qe7 9.Nd4+= ed4 (9...Be2 10.Ne2 Qe6 11.d3+=) 10.Bg4 de3 11.de3 (11.0-0 ef2 12.Rf2 Nh6+/–) 11...Bb4 (11...Nf6 12.Nc3 Be5 13.Bf3+=) 12.Nc3+/– Rd8 13.Qe2 Nf6 14.0-0 Ne5 (14...0-0 15.Bf3 Bc3 16.Bc3+/–) 15.Bf3 (15.Nd5 Nd5 16.cd5 0-0+–) 15...0-0 (15...Nf3 16.Qf3 Rd2 17.Rab1+/–) 16.Rfd1 (16.Nd5 Nd5 17.cd5 Rc8+–) 16...Rc8 The isolani on c4 becomes a target (16...Nf3 17.Qf3 Bc3 18.Bc3+=) 17.Nb5 (17.a3 Bd6 18.Nb5 Nf3 19.Qf3 Bb8+/–) 17...Nf3 18.Qf3 a6 19.Nd4 Rc4 20.Nf5 (better is 20.Rac1 Rc1 21.Rc1+= (21.Bc1?! g6=)) 20...Qe4?? (better is 20...Qe6+=) 21.Nh6!!+– Kh8 (21...gh6 22.Qf6 Discovered attack (22.Bf6 Deflection)) 22.Qf6!! Qg6 (22...gf6 23.Bf6 Mate attack) 23.Qg6 fg6 (23...hg6 24.Rd7 f6 25.Nf7 Kg8 26.Nd8+–) 24.Rd7 Bc3 25.Rc1 Bb2 26.Rc4 gh6 27.Rb7 (27.Rb7 Be5 28.f4+–) 1–0. Taulien,Hans_Juergen (2350) – Boldt,Alex (1960), remoteschach.de, 2002.

5.Nf3 c6 6.e3 de3 7.de3 (7.Ne5 ef2 8.Kf2 Qf6 9.Kg1 Be5–/+) 7...Nd7?? (better is 7...f6=) 8.Qd6+– Qe7 (8...cb5 9.Ne5 Qa5 10.Nd2 bc4 11.Nec4+–) 9.Be5 Ne5 10.Qe5 Qe5 11.Ne5 Nf6 (11...f6 12.Nf3+–) 12.bc6 b6 13.Nc3 0-0 (13...Ng4 14.Ng4 Bg4 15.Be2 Be2 16.Ke2+–) 14.Nb5 (14.Nd5 Rd8 15.Rd1 Kf8+–) 14...Re8 (14...Be6 15.Bd3+–) 15.Nc7 (15...Re5 16.Na8+–) 1–0. Taulien,Hans_Juergen – Debbeler,Adrian, remoteschach.de, 2002.

5.Nf3 Be6 6.e3 de3 7.de3 Nd7 8.Nc3 Ngf6 9.Be2 0-0 10.0-0 h6 11.Qc2 Qe7 12.Rfd1 Rfd8= 13.Rac1 Nc5 14.Nd5+= Nd5 15.cd5+/– Bg4 16.Ne5! Be2 17.Qe2 Be5 18.Be5 Qe5 19.Rc5 b6 20.f4 Qf5 21.e4 Qf4 22.Rc6 Re8 23.Qf3 Qe4 24.Qe4 Re4 25.Rc7 Ree8 26.d6 Red8 27.a4 Kf8 28.Kf2 a6 29.Rb7 ab5 30.ab5 Rab8 31.Rc7 Rbc8 32.Rd3 Ra8 33.Rb7 Rab8 34.Ra7 h5 35.Kg3 g6 36.Kf4 Kg7 37.Ke5 Re8 38.Kd5 Red8 39.Kc6 Rdc8 40.Rc7 Rd8 41.Rb7 (41…Rbc8 42.Kb6+–; 41.d7 h4+–) 1–0. Trkn – guest7114, ICC, 2004.

5.Nf3 Qf6 6.e3= Bg4 7.Be2 Bc5 (better is 7...de3!? 8.fe3 Qe7=) 8.Nd4+/– Be2 9.Ne2 Nd7 10.0-0 Ne7 11.f4 Nf5 (better is 11...Qe6!? 12.d4 ed4 13.ed4 Bb4+/–) 12.fe5+– Ne5 13.Ng3 0-0-0 (13...g6 14.Qc2 Ne3 15.de3 Qg5+–) 14.Nf5 (14.Rf5?! Nf3 15.Qf3 Qb2 16.Rc5 Qa1 17.Qf5 Kb8+–) 14...Kb8 (14...Nf3 A) 15.gf3?! Qb2 16.Qb3 Qf6+– (16...Qa1?? 17.Nc3 Qf1 18.Kf1+–); B) 15.Rf3?! Qb2 16.Nc3 Rd2+/–; C) 15.Qf3 Qb2 16.Nc3+–) 15.Qb3 Bb6 (15...Bf8 16.c5!+–) 16.c5! Bc5 17.d4 Bd6 (17...g6 18.de5 Qg5 19.Nd4+–) 18.Nd6 Qe6 (18...Qd6 19.de5 Qe6 20.Rf7 Rd1 21.Qd1 Qf7 22.Qb3+–) 19.Qe6 fe6 20.de5 cd6 21.ed6 Rhg8 (21...Rd7 22.e4+–) 22.Be5 Ka8 (22...Rd7 23.Nd2 h6 24.Nb3+–) 23.Rf7 b6 (23...Rdf8 24.Rc7+–) 24.Na3 h6 25.Rc1 g5 26.Rcc7 White intends d7 26...g4 (26...Rd7 27.Rcd7 Kb8 28.Rb7 Ka8 29.Ra7 Kb8 30.d7 Ka7 31.d8Q) 27.Ra7 Kb8 28.Rfb7 Kc8 29.d7 Rd7 30.Rb8 1–0. pierred (2790) – grahamtrue (2160), net–chess.com, 2016.

5.Nf3 Nf6 6.e3 Bg4 7.Qc2+= (worse is 7.ed4 e4–+).

5.e3 c5

6.Qc2 f5 7.ed4 ed4 8.d3 b6 9.Nf3 Nf6 10.g3 0-0 11.Bg2 Re8 12.Kf1 Bb7 13.Nbd2 Nbd7 14.Nh4 Bg2 15.Kg2 g6 16.Nhf3 Qc7 17.Rhe1 Qb7 18.Kg1 Ng4 19.Re8 Re8 20.Re1 Re1 21.Ne1 Nde5 22.Nf1? (better is 22.h3 Nf6 23.f4=) 22...Nf3–+ 23.Nf3 Qf3 24.h3 Ne5 25.Nd2?? (better is 25.Bc1 Qd3 26.Qd3 Nd3 27.Bg5–+) 25...Qe2 (25...Qd3?! 26.Qd3 Nd3 27.Ba3–+) 26.Kg2 (26.Qb1–+) 26…Nd3 (26...Nd3 27.Qd3 Qd3–+; 26...Qd3?! 27.Qd3 Nd3 28.Ba3–+) 0–1. Becker,Joachim – Egel,Jonas, Sparkassen Open, Nettetal GER, 2010.

6.bc6 A) 6...Nc6 7.Be2 (7.ed4 Nd4 8.Nf3 Qb6 9.Bd4 ed4 10.Qb3 Bc5 11.Bd3 Nf6 12.Qb6+=; 7.Nf3 de3 8.de3 Nf6 9.Nbd2 0-0 10.c5 Bc5 11.Ne5 Ne5 12.Be5+=; 7.Qb3 Nf6 8.ed4 Nd4 9.Bd4 ed4 10.Nf3 0-0 11.Be2 Re8 12.Qd3–/+) 7...Nf6 8.ed4 ed4 9.Nf3 Bb4 10.Qb3 0-0 11.a3 Bc5 12.0-0+=; B) 6...de3 7.de3 (7.fe3 Nc6 8.Nf3 Bg4 9.Qb3 Rb8 10.Qc2 Qe7 11.Nc3 Nf6 12.Nd5+=) 7...Nc6 8.Bd3 Nf6 9.Nc3 0-0 10.Nge2 Be6 11.e4 Ng4 12.h3+=.

6.Bd3 A) 6...Qe7 7.f3 (7.ed4 cd4 8.Qc2 Nf6 9.Bf5 Bf5 10.Qf5 Qd7 11.Qg5 0-0 12.Nf3–/+; 7.Bc2 Nf6 8.Ne2 Be6 9.Na3 e4 10.d3 de3 11.fe3 Nbd7 12.Qd2–/+; 7.Qc2 Nf6 8.Bf5 Bf5 9.Qf5 Qd7 10.Qg5 0-0 11.Ne2 Qe6 12.Na3+=) 7...a6 8.Na3 Nf6 9.Ne2 0-0 10.0-0 Rd8 11.Ng3 Be6 12.Qc2+=; B) 6...Nf6 7.f3 (7.ed4 cd4 8.Qc2 Qe7 9.Bf5 Bf5 10.Qf5 Qd7 11.Qg5 0-0 12.Nf3–/+; 7.Bc2 0-0 8.Qe2 a6 9.Na3 e4 10.d3 Be5 11.Rb1 ab5 12.ed4–/+; 7.Qc2 Qe7 8.Bf5 Bf5 9.Qf5 Qd7 10.Qg5 0-0 11.Ne2 Qe6 12.Na3+=) 7...a6 8.Qa4 Nbd7 9.ba6 0-0 10.Ne2 ba6 11.Na3 Nb6 12.Qc2+=.

6.ed4 cd4 7.Qe2 Be6 8.c5 Bc7 9.Nf3 Qd5 10.Ng5 Nf6 11.Ne6 Qe6 12.Qc4+=.

6.ed4 cd4 7.Be2 Bf5 8.f4 Bc5 9.d3 ef4 10.Nf3 Nf6 11.Qd2 Qd6 12.0-0+=.

6.ed4 cd4 7.Nf3 Nf6 8.Be2 Bf5 9.Qb3 0-0 10.0-0 d3 11.Bd1 Nbd7 12.Re1–/+.

6.ed4 cd4 7.f4 ef4 8.Bd4= Nf6 9.Nf3 0-0 10.Be2 Re8 11.0-0 Bf5 12.c5 Bc7 (12...Be7 13.Nc3=) 13.Nc3+= Ba5 14.Bc4 Bg4 (14...Ne4!? 15.Ne4 Be4=) 15.Qb3+– Re7? (better 15...Be6+–) 16.Bf6+– gf6 17.Nd5 Rd7 18.d4 a6 19.a4 b6 (19...Be6 20.Nf4 Bc4 21.Qc4+–) 20.c6 Rd6 (20...Rda7+–) 21.c7 (21.Nf4?! Ra7+–) 21...Qf8 22.cb8Q Rb8 23.Nf4 (23.ba6!? Rbd8+–) 23...ab5 24.ab5 Bf3 (24...Re8 25.Nd5+–) 25.Rf3 (25.gf3?! Rd4 26.Nh5 Qe7+–) 25...Rd4 26.Bf7! Qf7 (26...Kh8 27.Ne6 Qb4+–) 27.Rg3 Kf8 28.Ne6 Ke7 29.Re3 Kd7 (29...Rd7 30.Ng5 Kf8 31.Nf7 Rf7+–) 30.Nc5!! bc5 31.Qf7 Eliminates the defender f7 (31.Ra5 Qb3 32.Rb3 Rb4 33.Ra7 Kd6 34.Rd3 Rd4=+) 31...Kd6 (31...Kc8 32.Qe8 Rd8 33.Qc6 Bc7 34.Re7 Rd1 35.Rd1 Rb5 36.Qc7) 32.Qe7 Kd5 33.Qe6 1–0. DEFFM – GuestPHHH, freechess.org, 2020.

6.ed4 cd4 7.f4 Qh4 8.g3 Qe7 9.Qe2 f6 10.fe5 Be5 11.d3 a6 12.Nf3=.

6.Be2 A) 6...Qe7 7.d3 (7.Bg4 Nd7 8.d3 Ngf6 9.Bf5 0-0 10.Nf3 Nb6 11.Nh4 e4 12.Bc8+=; 7.Bf3 Nf6 8.d3 0-0 9.Nd2 a6 10.ba6 Ra6 11.Ne2 Nc6 12.0-0+=; 7.Qc2 Nf6 8.e4 Nfd7 9.Nf3 0-0 10.0-0 a6 11.Na3 f5 12.Bd3+=) 7...a6 8.Na3 Nf6 9.Nf3 0-0 10.0-0 Bf5 11.e4 Bg4 12.Bc1+=; B) 6...Nf6 7.Qc2 (7.d3 a6 8.ba6 Qa5 9.Nd2 Na6 10.Qb3 0-0 11.Ngf3 Ng4 12.e4+=; 7.f4 e4 8.ed4 cd4 9.Bd4 Bf4 10.Be3 Be5 11.Nc3 0-0 12.Rc1–/+; 7.ed4 ed4 8.Nf3 Bf5 9.Nh4 Be6 10.0-0 0-0 11.Re1 Re8 12.Nf3–/+) 7...0-0 8.e4 a6 9.Na3 b6 10.Nf3 Nbd7 11.ba6 Ra6 12.Nb5+=; C) 6...Bf5 7.f4 (7.Bf3 Qb6 8.d3 a6 9.Na3 Nf6 10.Ne2 Qa5 11.Qd2 Qd2 12.Kd2+=; 7.d3 a6 8.ba6 Na6 9.Qb3 Nf6 10.Nf3 0-0 11.0-0 Qe7 12.Nbd2+=; 7.Bg4 Bg4 8.Qg4 Nf6 9.Qg5 0-0 10.Ne2 Qa5 11.f4 Re8 12.fe5–/+) 7...Nd7 8.fe5 Ne5 9.Nf3 Qe7 10.Qb3 d3 11.Ne5 de2 12.Nf3=; D) 6...a6 7.Qa4 (7.ba6 Na6 8.f4 e4 9.Qb3 Nf6 10.ed4 Bf4 11.dc5 Nc5 12.Qb5–/+; 7.ed4 ed4 8.Qa4 Qe7 9.Na3 Nd7 10.Kf1 Ngf6 11.Re1 0-0 12.Nf3–/+; 7.a3 Nf6 8.ed4 ed4 9.a4 ab5 10.cb5 Bf5 11.Na3 0-0 12.Nc4–/+) 7...Nd7 8.ed4 ed4 9.Nf3 Nb6 10.Qb3 ab5 11.Qb5 Bd7 12.Qb3+=.

6.ed4 ed4

7.Bd3 Nf6 8.Nf3 0-0 9.0-0 Re8 10.Re1 Re1 11.Qe1 Bg4 12.Qe2+=.

7.Be2 Bf5 8.Nf3 Nf6 9.d3 a6 10.Na3 Qa5 11.Qd2 Qd2 12.Nd2–/+.

7.Nf3 Bf5 8.Be2 Nf6 9.Nh4 Be6 10.0-0 0-0 11.Re1 Re8 12.Nf3–/+.

7.Nf3 Nf6 8.Bd3 0-0 9.0-0 a6 10.a4 Re8 11.Re1 Re1 12.Qe1–/+.

7.Nf3 Nf6 8.Be2 0-0 9.0-0 a6 (9...Re8 10.d3–/+) 10.a4 (10.Na3 Re8+=) 10...ab5 11.ab5 (11.cb5 Bf5 12.Nh4 Be6+=) 11...Ra1–/+ 12.Ba1 Qa5 13.Bb2 Bf5 14.d3 Nbd7 15.Nbd2 Nb6 (15...Qb4!? 16.Qa1 Re8–/+) 16.Qb3+= Qa8 17.Nh4 Be6 18.g3 Qc8 (18...Qa4 19.Re1+=) 19.Bf3 (19.Qc2 Re8=) 19...Qc7 (19...g5 20.Ng2+=) 20.Ne4 Ne4 21.Be4 f5 22.Bg2 f4 23.Re1 Qd7 (23...fg3 24.hg3 (24.Re6 gf2 25.Kf1 Be7 26.Re7 Qe7–+; worse is 24.fg3 Bg4 25.Bd4 g5=) 24...Bg4 25.Re4 Bg3 26.Bd4 Bh2 27.Kf1–/+) 24.Bb7?? (better is 24.Nf3=) 24...fg3 (24...Qb7 25.Qd1 (25.Re6?? fg3 26.hg3 Qf7–+) 25...Bd7 26.Qh5–+) 25.fg3 (25.hg3 Qb7 26.f4 Qf7–+) 25...Qb7 26.Re6 (26.Bc1–+) 26...Qf7 (26...Qf7 27.Qd1 Qe6–+) 0–1. Pruvost,Alain – Tupet,G (1930), 6th LUCOPEN, 2015.

7.Nf3 Nf6 8.Be2 0-0 9.0-0 b6 10.d3 (10.Nd4 cd4 11.Bf3–/+) 10...Bb7 11.Nbd2 Nbd7 12.Ng5 Ne5 13.f4 Ng6 14.Bf3?? (better is 14.g3+=) 14...Bf3–+ 15.Qf3 (15.Ngf3 Nf4 16.Ne4 Ne4 17.de4 f6–+) 15...Bf4 16.Nde4 Ne4 17.Ne4 Be3 18.Kh1 (18.Nf2 Ne5 19.Qf5 Re8–+) 18...f5 19.Ng3 Ne5 20.Qd1 f4 21.Ne4 Qh4 22.h3 (22.Qe2 Rae8 23.a4–+) 22...f3 23.Kh2 (23.Rb1–+) 23...fg2 24.Rf8 (24.Kg2 Rf1 25.Qf1–+) 24...Rf8 25.Kg2 Rf3 (25...Rf2 26.Nf2 Qf2 27.Kh1 Nf3 28.Qf3 Qf3 29.Kh2 Qf2 30.Kh1 Bf4 31.Bd4 Qh2) 26.Qh1 Rf2! (26...Rf2 27.Kg1 Nf3 28.Qf3 Rf3 29.Nf2 Qf2 30.Kh1 Rh3) 0–1. Pruvost,A – Urbaniak,P (1915), La Fere FRA, 2012.

7.Nf3 Nf6 8.Be2 0-0 9.0-0 Nbd7 10.d3 (10.Re1 Re8 11.d3 a6 12.ba6–/+) 10...Qc7 (10...Re8 11.Re1 a6 12.Na3–/+) 11.g3 (11.Nbd2 Re8 12.Re1+=) 11...Re8 12.Nh4 (12.Re1–/+) 12...Ne5 13.Nd2 Bh3 14.Re1 Re7 15.Ndf3 Rae8 16.Ne5 Re5 17.Nf3 R5e7 18.Qd2 Bg4 19.Kg2 Qd7 20.Ng1 Bf5 21.Bf1 Ng4 22.Re7 Re7 23.Re1 Re1 24.Qe1 Qe7 25.Qe7 Be7 26.h3? (better is 26.Nf3+=) 26...Ne5–+ 27.Bc1 (27.Nf3 Nd3 28.Ba3 Kf8–+) 27...Nd3 28.Bd2 Ne5 29.Nf3? (29.f4 Be4 30.Kh2–+) 29...Be4 30.Be2 d3 31.Bd1 Nc4 32.Bc3 Nd6 33.a4 f6 34.Kf1 Kf8 35.Nd2 Bd5 36.Bf3 Bf3 37.Nf3 Kf7 38.Ne1 (38.Nd2 c4–+) 38...c4 39.Bd4 b6 40.Nf3 Ke6 (40...Ne4 41.Ke1–+) 41.Nd2 Kd5 42.Bb2 Ne4 43.Ne4 Ke4 44.Bc3 Bc5 45.Kg2 Bd4 (45...Bd4 46.Bd2 Be5 47.f3 Kd4–+) 0–1. Pruvost,Alain (1645) – Galtier,Antoine (1755), 10th La Fere Open, 2011.

7.Nf3 Nf6 8.Be2 0-0 9.0-0 Re8 10.Re1 Bf5 11.Nh4 Be6 12.Nf3–/+.

7.Nf3 Nf6 8.Be2 Bf5 9.Nh4 Be6 10.0-0 0-0 11.Re1 Re8 12.Nf3–/+.

7.h3 Nf6 8.Qe2 Be6 9.Nf3 0-0 10.Qd3 Qd7 11.g4 Re8 12.Be2–/+.

5.e3 de3

6.de3 Nd7 7.Be2 (7.Nf3 Ngf6 8.Be2 Qe7 9.Nc3 0-0 10.Qc2 Rd8 11.0-0 e4 12.Nd2=; 7.Nc3 Ngf6 8.Nf3 0-0 9.Be2 Qe7 10.Qc2 e4 11.Nd4 Nc5 12.Rd1+=; 7.Ba3 Ba3 8.Na3 Ngf6 9.Nf3 0-0 10.Be2 Qe7 11.Qb3 Nc5 12.Qb2+=) 7...Ngf6 8.Nf3 a6 9.0-0 ab5 10.cb5 0-0 11.Qc2 Qe7 12.Nbd2=.

6.de3 Qe7 7.Nd2 (7.Nf3 Nf6 8.c5 Bc5 9.Be5 Bg4 10.Nbd2 Bb4 11.Bf6 Qf6 12.Rc1=; 7.Be2 Nf6 8.Nf3 0-0 9.Nbd2 Rd8 10.0-0 Nbd7 11.Qc2 Nc5 12.Rfd1=) 7...Nf6 8.Ngf3 Nbd7 9.Be2 0-0 10.Qc2 a6 11.0-0 e4 12.Ng5=.

6.de3 Qf6 7.Nc3 (7.Nd2 Nd7 8.Ne4 Bb4 9.Bc3 Bc3 10.Nc3 Ne7 11.Nf3 Nc5 12.Nd5=; 7.Nf3 Bg4 8.h3 Bf3 9.Qf3 Qf3 10.gf3 f6 11.Rg1 g6 12.Bg2=; 7.Bd3 Nd7 8.Qc2 Ne7 9.Nc3 Qg5 10.Bf1 Nc5 11.Nf3 Qg6 12.Qg6=) 7...Ne7 8.Bd3 Nd7 9.Nf3 Nc5 10.Ne4 Ne4 11.Be4 Qe6 12.Qd3=.

6.de3 Nf6 7.Nf3 (7.c5 Bc5 8.Qd8 Kd8 9.Be5 Nbd7=) 7...Bg4 (7...Nbd7!?+=) 8.c5+= Be7 (better is 8...Bc5!? 9.Qd8 Kd8 10.Ne5 Be6+=) 9.Qd8+/– Bd8 10.Ne5 Bd7 11.Nc3 0-0 12.0-0-0 Bf5 (12...Be6 13.c6 bc6 14.Nc6 Nc6 15.bc6+/–) 13.c6 (13.Bc4 Be7 14.Nd5 Nd5 15.Bd5 Bc8+–) 13...bc6 14.Ba3 (14.Nc6 Nc6 15.bc6 Be4+/–) 14...Re8+/– 15.Bc4 (worse is 15.Nc6 Nc6 16.bc6 Ne4 17.Ne4 Be4=) 15...Be6 (15...Re5!? 16.Rd8 Re8 17.Re8 Ne8+–) 16.Be6+– fe6 17.bc6 Na6 (17...a5 18.Rd4+–) 18.Rd4 (18.f4 Nd5 19.Nd5 ed5 20.Rd5 Bf6+–) 18...Be7 (18...Nd5 19.Ne4+–) 19.Be7 Re7 20.Kd2 (20.Rhd1 Rb8+–) 20...Nc5 (20...Rb8 21.Rb1 Rb1 22.Nb1 Nc5+–) 21.Rb1 g6 22.Rb5 Na6 23.g4 Kg7 (23...Ne8 24.f4+–) 24.g5 Ne8 25.Ne4 h6 (25...Rb8 26.Rb8 Nb8 27.Rd8+–) 26.Rd7 Rd7 27.cd7 (27.Nd7?! hg5 28.Ng5 Nd6 29.Ne6 Kh6+–) 27...Nd6 (27...hg5 28.Nc6 Nf6 29.Nf6 Kf6 30.Rb7+–) 28.Nd6 cd6 29.Rb7 (29.Rb7 Kg8 30.Ra7+–) 1–0. pierred (2790) – mic (2220), net–chess.com, 2016.

4.c4 Nf6

5.cd5 Nd5

6.Nc3 Nc3 7.Bc3 0-0 8.e3 Nd7 9.Qc2 Re8 10.Ne2 a6 11.Ng3 ab5 12.Bb5 c6 13.Bd3 Nc5 (better is 13...Nf8!?=+) 14.Bh7+= Kf8 15.Bf5 g6 (15...Kg8 16.Bc8 Rc8 17.Nf5+/–) 16.Bc8+/– Qc8 17.0-0 Qg4 18.Be5 Re5 19.d4 Rd5 20.dc5 Rc5 21.Qb2 Rca5 22.Qb7 Qe6 23.Rfd1 Ra2 24.Qa8 Ra8 25.Ra8 Kg7 26.Rd8 Be5 27.Ne2 c5 28.R8d5 c4 29.R5d2 Qf5 (better is 29...g5!?+/–) 30.Rc1+– Qe4 31.Nd4 (31.Ng3!? Qa8 32.Rdc2 Qd5+–) 31...c3 32.Rdd1 f5 (32...Qg4 33.h3 Qe4 34.Rc3+–) 33.h3 c2 34.Rc2 (34.Nc2?! Bb2+/–) 34...f4 35.Re2 Bd4 36.Rd4 Qb1 37.Kh2 fe3 38.Re3 Qb2 39.Rd7 Kh6 40.f4 Qf2 41.Re4 Qb6 42.Ree7 g5 43.f5 Qb8 44.Rc7 g4 45.h4 Qg8 46.Rg7 Qg7 47.Rg7 Kg7 48.Kg3 1–0. Taulien,Hans_Juergen – Brueske,Thomas, remoteschach.de, 2003.

6.Nc3 Nc3 7.Bc3 Nd7 8.Qc2 (8.Nf3 0-0=+) 8...0-0 9.Nf3 Re8 (9...Qe7 10.e3=+) 10.e4 Nc5 11.Be2 Ne6 (11...a6 12.ba6 b6 13.a4=+) 12.0-0 (12.g3 Nc5=+) 12...Nf4–/+ 13.Bc4 (13.Rfe1 Qd7 14.Bf1 Qg4=+) 13...Bg4 14.Ne1 Qg5 (14...h6 15.Kh1–/+) 15.Kh1 Qh5 (15...Rad8 16.Qa4–/+) 16.f3 Be6 17.Bb2 Rad8 (17...Bc4!? 18.Qc4 Re6–/+) 18.Nd3=+ Nd3 19.Bd3 Be7 (19...Qg5 20.Rfd1=+) 20.Rfd1 (20.Rad1 Rc8=) 20...Bh4=+ 21.Kg1 Rd7 22.Be2 Qg5 (22...Red8 23.d3 Qg5 24.Qc5=) 23.Bc3 Rc8 (23...Qg6 24.d4 ed4 25.Rd4–/+) 24.Qb2 (24.Qa4 Bh3 25.Bf1 Rd3=+) 24…Rcd8. Taulien,Christian (1945) – Penzler,Frank (2255), Spendenturnier, 2006.

6.Nc3 Be6 7.Nd5 Bd5 8.Qc2 c6 (8...0-0!?+=) 9.e4= Be6 10.Nf3 f6 (10...0-0 11.Ne5 (worse is 11.Be5 Be5 12.Ne5 Qd4–/+) 11...cb5 12.Nf3=) 11.Bc4+= Qe7 12.0-0 Qf7 (12...0-0!+=) 13.Be6+/– Qe6 14.d4 cb5 15.de5 Be5 16.Be5 fe5 17.Rfb1 a6 18.a4 ba4? (better is 18...0-0 19.ab5 Rc8+/–) 19.Rb7+– Qc6 (19...0-0 20.Ng5 Qe8+–) 20.Rb8! Rb8 (20...Kd7 21.Ne5 Ke7 22.Nc6 Kf6 23.Qc3 Kg6 24.Ne5 Kf6 25.Rb6 Ke7 26.Qc5 Ke8 27.Rd1 a3 28.Re6) 21.Qc6 (21.Qc6 Kf8 22.Qd6 Kg8 23.Qe6 Kf8 24.Ne5 Rb7 25.Rc1 g6 26.Qf6 Kg8 27.Rc8) 1–0. pierre – tjacot, Microsoft, 2012.

6.e4 Nf6 7.Qc2 0-0 8.Nf3 a6 9.a4 (worse is 9.Be5 Be5 10.Ne5 ab5–+) 9...Bg4 (9...ab5!? 10.ab5 Ra1 11.Ba1 Qe7–/+) 10.Ne5= Re8 11.Ng4 Ng4 12.Be2 Nf2?? (better is 12...Qh4 13.g3 Qh3=) 13.Kf2+– Qh4 14.Kf1 Re4 (14...ab5 15.Bf3 ba4 16.Ra4+–) 15.Nc3 Qf6 (15...Re6 16.Bf3 Nd7 17.d4 (17.Bb7 Rae8 18.Ne4 Nc5+=) 17...ab5 18.Nb5+–) 16.Bf3 Re8 (16...Rf4 17.Ne4 Qg6 18.Qc3+–) 17.Ne2 (17.Nd5 Qd8+–) 17...Qd8 (17...Be5 18.Be5 Qe5 19.d4+–) 18.Qc3 f6 (18...Be5 19.d4 Bd6 20.Bb7 Ra7 21.ba6 Na6+–) 19.Bb7 Qe7 (19...Ra7 20.ba6 Qd7 21.Qc4 Kh8+–) 20.Qc4 Kh8 21.Ba8 Be5 (21...Nd7 22.Bf3 ab5 23.ab5+–) 22.d4 Bd6 (22...ab5 23.ab5 (23.de5?! bc4 24.Bf3 fe5=) 23...Bd6 24.Ng3+–) 23.ba6 Nd7 24.Bc6 Rd8 25.a7 Nb6 26.Qd3 Qe6 27.Qf3 g6 28.d5 Qf7 29.Bf6 Kg8 30.Bd8 Qf3 31.gf3 Kg7 32.Rc1 Na4 33.Ba4 h5 34.Bc7 Be5 (34...Kg8 35.Bd6 Kf7 36.a8Q Kg7 37.Qf8 Kh7 38.Rc7) 35.Be5 Kf7 (35...Kh6 36.h4 Kh7 37.a8Q g5 38.Rc6 gh4 39.Bc2) 36.Rc7 (36.Rc7 Kf8 37.a8Q) 1–0. Taulien,Hans_Juergen (2350) – Neffgen,Dieter (1840), remoteschach.de, 2002.

6.e4 Nf6 7.Qc2 0-0 8.Nf3 Re8 9.Bc4=+.

6.e4 Nf6 7.Qc2 0-0 8.Nf3 Bg4 9.Ne5= Be5 10.Be5 c6 (better is 10...Nbd7!? 11.Bb2 Ne4=) 11.f3+/– Be6 (11...Re8 12.Bf6 (worse is 12.fg4 Re5 13.Nc3 a6–/+) 12...Qf6 13.Qc3+/–) 12.d4 (12.Nc3 a6 13.ba6 Na6+=) 12...Nbd7 (12...cb5 13.Bb5 Nbd7 14.Bf6 Nf6 15.Qd2+=) 13.Bd6 (13.bc6 Ne5 14.de5 Nh5 15.cb7 Rb8+/–) 13...Re8 14.bc6 bc6 15.Nd2 (15.Qc6 Rc8 16.Qb7 Bd5–+) 15...Qa5 (15...Nd5!?+/–) 16.Be2 (16.Kf2 Rad8+–) 16...Rec8 (16...c5 17.dc5 Rec8 18.c6+/–) 17.0-0 (better is 17.Rb1 Nb6 18.0-0 Rd8+–) 17...c5?? (better is 17...Qb6 18.Bg3 Qd4 19.Bf2 Qe5+–) 18.d5 Bd5 19.ed5 Nd5 (19...c4 20.Rab1 Nb6 21.Rfe1+–) 20.Rfc1 Qb6 (20...Re8 21.Ne4+–) 21.Nc4 Qc6 22.Bd3 (22.Bg3 Re8+–) 22...N5f6 (22...g6 23.Rab1+–) 23.Bg3 Rc7 (23...Rd8 24.Nd6 a6 25.Rab1+–) 24.Rab1 Rcc8 25.Nd6 Rcb8 (25...a6 26.Nc8 Rc8 27.Bc4+–) 26.Nf5 g6 (26...Re8 27.Bb5 Qc8+–) 27.Rb8 Nb8 1–0. Taulien,Hans_Juergen (2350) – Neffgen,Dieter (1840), remoteschach.de, 2002.

4.d3 Nf6

5.Nc3? Bb4–+ 6.d4 ed4?? (better is 6...Ne4 7.Qd3 ed4 8.Qd4 Qf6 9.Qf6 gf6–+ (9...Nf6?! 10.e3+=)) 7.Qd4+= Ba5 8.Nf3 0-0 9.e3 Re8 10.Be2 Ne4 11.0-0 Nd7?? (better is 11...Bc3 12.Bc3 Nc3 13.Qc3 a6+=) 12.Ne4+– Re4 (12...Nf6 13.Nf6 Qf6 14.Qf6 gf6+–) 13.Qg7 1–0. Jokmin,Alex – Holmquist,Marson, SN–2010-0-00236, 2010.

5.Nd2 Bd7 6.d4 (better is 6.Ngf3=+) 6...Bb5?? (better is 6...ed4 7.Bd4 Bb5–/+) 7.de5+– Be5 8.Be5 Nc6 9.Bb2 0-0 10.Nb3 Qd6 11.Nf3 Rfe8 (11...Qb4 12.c3 Qe7 13.Rb1+–) 12.Qd2 (12.Bf6 Qf6 13.Qd5 a6+–) 12...Re7 (12...Ne4 13.Qc1+/–) 13.0-0-0 (13.Bf6 Qf6 14.Qd5 a6+–) 13...Rd8 14.Qc3 (better is 14.Nbd4 Nd4 15.Nd4+–) 14...Be2+= 15.Be2 Re2 16.g3 (16.Nc5 b6 17.Nb7 Nb4+–) 16...Rf2 (16...Nb4 17.Kb1 Nc2 18.Rd2 Rd2 19.Nbd2=) 17.Rd2 (17.Nc5 b6 18.Nb7+/–) 17...Rd2 18.Qd2 Ne7 (18...Ne4 19.Qf4=+) 19.Qa5 a6 (better is 19...Ne4!?=) 20.Be5+/– Qb6 (20...Nc6 21.Bd6 Na5 22.Bc7 Nb3 23.ab3+/– (23.cb3? Rc8–+)) 21.Re1 (better is 21.Qb6 cb6 22.Bf6 gf6 23.Re1+/–) 21...Qf2? (21...Ne4 22.Bc7 Qa5 23.Ba5+/–) 22.Bc7?? (better is 22.Bf6 gf6 23.Re7 (23.Qc7? Rc8 24.Re7 Rc7 25.Rc7 Qf3–+) 23...Qf3 24.Qc7 Qh1 25.Kb2+–) 22...Rc8 (22...Re8 23.Nbd4 Nc6 24.Nc6 Re1 25.Qe1 Qf3 26.Ne7 Kh8+/–) 23.Qc3?? (better is 23.Nbd4 Nc6 24.Nc6 bc6 25.Qa6+/–) 23...Ne4 (23...d4 24.Nbd4 Ned5 25.Qd2 Qd2 26.Kd2 Rc7 27.g4–/+) 24.Qe5 (better is 24.Qd3!?=) 24...Qf3 25.Qe7 Qc3 26.Re2 (26.Re4 de4 27.Nc5–+) 26...Qc7 27.Qb4? (27.Qc7 Rc7 28.Nd4 b5–+) 27...b5 (27...Nc3 28.Qg4 Ne2 29.Qe2–+) 28.Nd4 (28.Qa5 Qb7–+) 28...Qc4 (better is 28...Nc3 29.Kd2 Ne2 30.Ke2 Qe5 31.Kd2 a5–+) 29.Qc4 Rc4 30.Nf5 Kf8 31.Ne3 (31.a3 b4 32.ab4 Rb4–+) 31...Rc5 (31...Nc3 32.Rd2 Rb4 33.Rd5 Rb1 34.Kd2 Nd5 35.Nd5–+) 32.Re1 (32.Nd5 Ng3! 33.hg3 Rd5 34.Kb2–+) 32...Ke7 (32...d4 33.Ng4 f5 34.a3–+) 33.Kb2? (33.Nd5 Rd5 34.Re4 Kd6–/+) 33...g6 (33...Ke6 34.g4–+) 34.Kb3? (better is 34.Nd5 Rd5 35.Re4 Kd7 36.a4–+) 34...Kd6 35.Kb4 f5 36.a4 (36.Rd1 Nc3 37.Rd2 Na2 38.Ka5 Kc6–+) 36...ba4 37.Ka4 (37.Re2 Rb5 38.Ka3 d4 39.Nc4 Kd5–+) 37...d4 38.Rd1 (38.Nf1 Rc2 39.Ra1 Kd5–+) 38...Ke5 39.Nf1 (39.Nf5 gf5 40.Kb3–+) 39...Rc2 (40.Kb4 g5–+; better is 39...Nc3 40.Kb4 Rb5 41.Kc4 Nd1–+) 0–1. Taulien,Christian – Hangmann,Christian, remoteschach.de, 2002.

5.Nf3 e4 6.de4 de4 7.Ne5–/+.

4.d4 ed4

5.Qd4 Nf6 6.c4 c5 7.Qe3 Be6 8.cd5 Nd5 9.Qd2 0-0 10.e4 (10.Nc3!? Nc3 11.Bc3=+) 10...Bf4–/+ 11.Qc2 Qa5 12.Nd2 Re8 13.Ne2?? (better is 13.Ngf3 Bf5 14.Kd1–/+) 13...Nb4–+ 14.Qb1 (14.Qc3 Be5!! 15.Qb4 cb4 16.Be5 Qb5–+) 14...Bd2 15.Kd2 Rd8 16.Ke3 Rd3 17.Qd3 Nd3 18.Bc3 (18.Kd3 Qb5 19.Kc2 Qa4 20.Kc1 Qe4–+) 18...Nb4 19.Bb4 (19.Kf3 Qa3–+) 19...Qb4 20.Rd1 Nd7 (21.f3 Qb5–+) 0–1. Pierred (2125) – Nemrod (2600), Rated game, 2005.

5.Qd4 Nf6 6.c4 c5 7.Qe3 Be6 8.cd5 Nd5 9.Qd2 0-0 10.e4 Bf4 11.Qc2 Re8 (11...Nb4 12.Qc3 Qd4 13.Qd4 cd4 14.Na3–/+) 12.Nf3 Qa5 13.Nbd2 Bf5 14.Kd1 Bg6 15.Nc4? (15.Qc5 Qa4 16.Qc2 Qc2 17.Kc2=) 15...Qd8 16.Bd3? Nb4 17.Qc3 Qd3 18.Nfd2 f6 19.f3 Rd8 20.g3 Bd2 21.Nd2 Qb5 22.a4 Qa6 23.Qb4 cb4 24.Ke1 Qd3 25.Rd1 Qe3 (26.Kf1 Rd2 27.Rd2 Qd2–+) 0–1. Pierred (2100) – Nemrod (2590), Rated game, 2005.

4.d4 e4

5.a4 e3–/+ 6.Nf3 (6.g3 ef2 7.Kf2 Nf6–/+) 6...Nf6 7.fe3 Ng4 8.Qd2 (better is 8.g3–/+) 8...Bh2!–+ 9.Rh2 (9.Nh2 Qh4) 9...Nh2 10.Nc3 (10.Qd3 Nf1 11.Kf1 f5–+) 10...Nf1 11.Kf1 f5 12.Ba3 h5 13.Ne5 Be6 14.a5 h4 15.Ng6 Rh6 16.Nf4 g5 17.Ne6 Re6 18.Kg1 Rf6 19.Rf1 c6 20.Qd3 Qa5 21.e4 fe4 22.Ne4 Rf1 23.Kf1 Qc7?? 24.Nd6+– (24...Kd8 25.Qf5+–) 1–0. Kitama – koding, mySchach.de, 2005.

5.c4 dc4 6.Nc3 (6.e3 Qg5 7.Qa4 Nd7=+) 6...e3–/+ 7.Nf3 Nf6 8.Qc1 Ng4 9.Nd1 ef2 10.Nf2 0-0 11.e4 Qe8 12.Bc4 Nf2 13.Kf2 Qe4 14.Re1 Qg6 15.Ne5 Qh5 16.Qf4 a6 17.Ke3 (better is 17.Be2!? Qf5 18.Qf5 Bf5 19.a4=+) 17...ab5 18.Rf1?? (better is 18.Be2 Be5 19.Bh5 Bf4 20.Kf4–+) 18...bc4 19.Rf3 f6 20.g4 Qe8 21.Qe4 Qb5 22.Nc4 Re8 23.Nd6 Re4 24.Ne4 Qb2 (25.Rd1 Ra3 26.Rd3 Qc1 27.Ke2 Ra2 28.Rd2 Bg4 29.Ra2 Qc4 30.Kf2 Qa2 31.Kg3 Bf3 32.Kf3 Qh2–+) 0–1. Pierred (2325) – Andrea K (2380), Rated game, 1m + 3s, 2005.

5.c4 e3 6.Nf3 dc4 7.fe3–/+.

5.e3 a6 6.Nc3 Nf6 7.Nge2 0-0 8.Ng3 g6 (8...Bg4!? 9.f3 ef3 10.gf3 Bd7–/+) 9.Be2+= Be6 10.0-0 ab5 11.Nb5 Be7 12.Nc3 (12.c4 dc4 13.Qc2 Nc6=) 12...h5 13.h4? (better is 13.f3 h4 14.Nh1=) 13...Ng4–+ 14.Bg4 Bg4 (14...hg4?! 15.h5+=) 15.f3 (15.Qc1 Bh4 16.Nge2 b6–+) 15...ef3 16.gf3 Bh3 17.Rf2 Bh4 18.Nce2 (18.Rh2 Be6 19.Nge2–+) 18...Qg5 19.Kh2 Qe3 20.Kh3 Qf2 21.Qf1 Bg3 22.Qf2 (22.Ng3 Qc2 23.Qb5 h4–+) 22...Bf2 23.Rf1 (23.Nf4 Nc6 24.Nd5 Bd4 25.Ne7 Ne7 26.Bd4 Nf5–+) 23…Ra2 (23...Ra2 24.Rf2 Rb2–+) 0–1. Tiedemann,Joern (2125) – Tauscher,Karl, RSX–Senioren–1, 2007.

5.e3 Nf6 6.c4 dc4 7.Bc4 a6=+.

5.e3 Nf6 6.h3 0-0 7.a4 Be6 8.Ba3 Ba3 9.Ra3 c6 10.Ne2 Nbd7 11.Nf4 Qe7 12.c3 Rfe8 13.g4 cb5 14.g5 b4 15.gf6 Nf6 16.Rb3 bc3 17.Nc3 Rab8 18.Nh5 b6 19.Nf6 Qf6 20.Nb5 a6 21.Nc7 Rec8 22.Na6 Rb7 23.a5 Rc6 24.Nc5 Rb8 25.Bb5 Rd6 26.Ba6 Qd8 27.Nb7 Rb7 28.Bb7 ba5 29.Qa1 Rb6 30.Qa5 1–0. hamiltonharris (1860) – mrgiff (1750), ChessWorld.net, 2015.

4.e3 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 Qa5 9.Bc3 Qb6 10.d4 ed4 11.Bd4 Qa5 12.Bc3 Bb4 13.Bb4 Qb4 14.Nd2 Nf6 15.Ngf3 Be6 16.Be2 dc4 17.0-0 c3 18.Nb1 cb5 19.Qc2 0-0 20.Qc3 Qc3 21.Nc3 Bc4 22.Nd4 Be2 23.Nce2 b4 24.Rb1 Na6 25.Kf1 Rc8 26.Nf5 Rc2 27.Ned4 Ra2 28.Nd6 Nd5 Time forfeit 0–1. aravind555 (1780) – LuckerKing (1780), lichess.org, 2020.

5.a4 ab5 6.Bb5 c6 7.Be2 Nf6 8.c4 0-0 9.Nf3 Nbd7 10.0-0 Re8 11.d4 e4 12.Nfd2 Qc7 13.g3 (13.c5 Bh2 14.Kh1 b6+=) 13...Nf8 14.c5 Be7 15.Nc3 Bh3 16.Qc2? (better is 16.Re1+=) 16...Bf1–+ 17.Nf1 b6 18.cb6 Qb6 19.Ba3 Ba3 20.Ra3 Reb8 21.Bd1 (21.Nd2 Ne6–+) 21...Ne6 22.Nd2 Qb2 (22...c5 23.Rb3 Qc7 24.Rb8 Rb8 25.dc5 Nc5 26.Nb5–+) 23.Ra2 Qc2 24.Bc2 Ne8 (24...c5 25.dc5 Nc5 26.f3–+) 25.f4 f5 26.Kf2 Nd6 27.Ke2 Rb4 28.h3 Rab8 29.Kd1 Nc4 30.Nc4 Rc4 (30...dc4?! 31.g4 g6 32.a5+=) 31.Kd2 Rcb4 (31...c5 32.dc5 Rc5 33.g4–+) 32.Kc1 (32.a5 Ra8 33.g4 g6 34.gf5 gf5–/+) 32...g6 33.h4 (33.Kd2 R4b6–/+) 33...Nc7 (33...Ra8 34.Bd1–+) 34.Ra3 (34.a5 Na6–/+) 34...Na8 (34...Ra8 35.Kd2–+) 35.Na2 (35.a5 Nc7–/+) 35...Rc4 36.Nc3 Nc7 37.Kd2 (37.Bd1 Kf7–/+) 37...Rcb4 38.Kd1 ½–½. Baer,Cy (1895) – Daniel,Achim (1890), RSS7E easy–57, 2007.

5.c4 Be6 6.c5 Bc5 7.Be5 Nf6 8.Nf3 Nbd7 9.Bg3 (9.ba6 ba6 10.d4 Bb4 11.Nfd2 c5=+) 9...ab5 10.Bb5 c6 11.Be2 Ne4 12.Nc3 Nc3 (12...Bb4 13.Qb1 Bc3 14.dc3–/+) 13.dc3=+ Qa5 14.Qc2 Bf5 15.0-0?? (better 15.Bd3 Bd3 16.Qd3=+) 15…Bc2–+ 0–1. Kislov,Leonid – Usatchev,Sergei, 2012.

5.Nf3 ab5 6.Bb5 c6 7.Be2 e4 8.Nd4 Nf6 9.0-0 c5 10.Nb3 0-0 11.c4 dc4 12.Bc4 Nbd7 13.Nc3 Re8 14.d3 Qc7 15.h3 ed3 16.Bd3 Be5 17.Qc2 Bc3 18.Bc3 b6 19.f4 Bb7 20.e4 Ne4 21.Be4 Be4 22.Qf2 Bd3 23.Qg3 g6 24.Qd3 Rad8 25.Qc2 c4 26.Nd4 Nc5 27.Nb5 Qc6 28.a4 Ne4 29.Rfe1 Nc3 30.Re8 Re8 31.Nc3 Qc5 32.Kh1 Re3 33.Rd1 Qb4 34.Nd5 Re1 35.Kh2 Qc5 36.Re1 Qd5 37.Re8 Kg7 38.Qc3 Kh6 39.g4 Qd6 40.g5 Kh5 41.Qf3 Kh4 42.Qg4 1–0. Chess4Win – saeedgorjiii75, lichess.org, 2019.

5.Nf3 Qe7 6.a4 Bg4 7.Be2 ab5 8.ab5 Ra1 9.Ba1 Nf6 10.c4 c6 11.Nc3 0-0 12.Qb3 e4 13.Nd4 Be2 14.Nce2 Rc8 15.Nf5 Qd7 16.Nd6 Qd6 17.h3 Nbd7 18.0-0 dc4 19.Qc4 Qd2 20.Ng3 Qd5 21.Qd5 cd5 22.Nf5 Kf8 23.Bd4 b6 24.Ra1 g6 25.Ng3 Ke7 26.Ra6 Rb8 27.Ne2 Nc5 28.Ra7 Nfd7 29.Nc3 Kd6 30.f3 f5 31.Kf2 Ne6 32.Ne2 Nd4 33.Nd4 Rc8 34.f4 Rc7 35.Ra8 Nc5 36.Rb8 Rb7 37.Rc8 Rc7 38.Rd8 Nd7 39.Nc6 Kc5 40.Nd4 Kc4 41.Ke2 Nc5 42.Rb8 Na4 43.Kd2 Kb4 44.g4 fg4 45.hg4 Nb2 46.Ke2 Nc4 47.f5 gf5 48.gf5 Ra7 49.Nc6 1–0. RichardSommer (2105) – Apdemic (2040), lichess.org, 2020.

5.Nf3 Qe7 6.ba6 Na6 7.Bb5 c6 8.Be2 Nf6 9.Rf1 (9.0-0 0-0-/+) 9...Ng4 10.Ne5? (better 10.h3!? Nf6 11.d4-/+) 10...Be5 (10...Ne5 11.f4 Nc4 12.Bc4 dc4 13.Kf2-+) 11.Be5 (11.d4 Nh2 12.de5 Nf1 13.Bf1 Bf5-+) 11...Qe5 12.d4 Qe4 (12...Qe4 13.f3 Qe3 14.fg4 Bg4-+) 0-1. aheadotg (2195) - unjournakamura (2450), Rated Crazyhouse game, lichess.org, 2020.

5.Nf3 Qe7 6.Nc3 Nf6 7.a4 0-0 8.Be2 Re8 9.0-0 c5 10.bc6 bc6 11.h3 a5 12.Qc1 Na6 13.Nd1 Bd7 14.Nh2 Ne4 15.c4 Nac5 16.Qc2 Rab8 17.d3 Nf6 18.Rb1 Na6 19.d4? (better is 19.Ng4!? Nb4 20.Qc3–/+) 19...Nb4–+ 20.Qd2? (20.Qc1 ed4 21.Bd4 Bf5–+) 20...ed4 21.Bd4 Bf5 (21...Ne4 22.Qe1–+) 22.Rb3 (22.Nc3 Bb1 23.Rb1–+) 22...c5 (better is 22...Ne4 23.Qb2 c5 24.Bg7 Qg5–+) 23.Bf6–/+ Qf6 24.cd5 Nd5?? (better is 24...Qg6 25.f4 Bh3–/+) 25.Rb8+– Rb8 26.Bc4?? (better is 26.Qd5 Bc2 27.Ng4+–) 26...Nb4 27.Nc3 Be5 (27...Rd8 28.Qc1–+) 28.Ne2 (28.Nd5 Bh2 29.Kh2 Nd5 30.Qd5 Be6=) 28...Qg6 (28...Rd8 29.Qe1–/+) 29.Kh1? (29.Nf3 Qd6=) 29...Be4 (29...Bh3!? 30.Bf7 Qf7 31.gh3–+) 30.f3 Bd3 (30...Bc6 31.Ng4 Bc7 32.Qc3–/+) 31.Ng4? (31.Rd1 Qd6 (31...Bc4?? 32.Qd8 Rd8 33.Rd8) 32.Bd3 A) 32...Bh2? 33.f4 Nd3 34.Qd3 (34.Kh2?! c4=) 34...Qd3 35.Rd3+–; B) 32...Rd8 33.Bh7 Kh7 34.Qd6 Rd6 35.Rd6 Bd6=) 31...Bd6 (31...Bc7 32.Bd3 Qd3 33.Rd1–/+) 32.Qc3?? (32.Rd1 Be2 33.Ne5 Qc2 (33...Be5?? 34.Qd8 Rd8 35.Rd8) 34.Bf7 Kh8 35.Qc2 Nc2 36.Rd6 Ne3+/–) 32...h5 (32...Bc4 33.Qc4 Qd3 34.Qd3 Nd3 35.Kg1–/+) 33.Bd3? (better is 33.Ne5!? Be5 34.Qe5=) 33...Nd3 34.Nh2?? (better is 34.e4 hg4 35.Qd3 gh3 36.gh3–+) 34...Rb2–+ 35.Qa5 (35.Qb2 Nb2 36.e4 Qe6–+) 35...Re2 36.Qa8 (36.Qd8 Bf8 37.g4 Nf2 38.Rf2 Rf2–+) 36...Kh7 (36...Kh7 37.f4 Re3–+) 0–1. Kislov,Leonid – Krivonogov,Yuri, Omsk RUS, City Ch, 2012.

4.e3 b6

5.a4 a5 6.Nf3= Nd7 7.c4 Bb7 8.cd5 Ngf6 9.Nc3 Nd5 10.Bc4 Nc3 11.Bc3 Qe7 (11...e4 12.Nd4= (12.Bg7? Rg8 13.Bc3 ef3–+)) 12.Qc2 Qf6 13.Be2 g5 (13...c5 14.bc6 Bc6 15.d4=) 14.d4+= 0-0-0 (14...g4 15.de5 Ne5 16.Ne5 Be5 17.Be5 Qe5 18.0-0+=) 15.Rc1 h5 (15...Rhe8 16.de5 Ne5 17.Kf1+=) 16.de5 (16.0-0 Kb8+/–) 16...Ne5+= 17.Ne5 Be5 18.Be5 Qe5 19.Bf3 (19.0-0 Rd7+=) 19...Bf3= 20.gf3 Rd5 (20...Rhg8 21.Qc4=) 21.Qc6 Rc5?? (better is 21...Kb8=) 22.Rc5+/– Qc5 23.Qa8 Kd7 24.Qh8 Qc1 25.Ke2 Qh1 26.Qh5 Ke8 (26...Ke6 27.Qg4 Kf6 28.Qd4 Ke7 29.Qe5 Kd7 30.Qf5 Ke7 31.Qg5 Ke6 32.Qg4 Ke7 33.Qh4 Ke8 34.Qh8 Kd7 35.Qf8 Qh2 36.Qf7 Kc8 37.Qe8 Kb7 38.Qe4 Kc8 39.Qa8 Kd7 40.Qd5 Ke8 41.f4+–) 27.Qg5 (27.Qh8!? Kd7 28.Qd4 Kc8 29.Qg4 Kb7 30.Qg5 Qh2 31.Qd5 Kc8 32.Qf7 Qe5 33.Qg8 Kb7+–) 27...Qh2 28.Qg8 Ke7 29.Qg3 (29.Qg3 Qg3 30.fg3+–) 1–0. Myers – Long, Burlington, 1978.

5.a4 Nf6 6.Nf3 e4 7.Nd4=+.

5.c4 Bb7 6.cd5 Bd5 7.d4 e4 8.Qg4 g6 9.Nc3 Bb4 10.a3 f5 11.Qh3 Be7 (11...Ba5!?=) 12.Nge2 Nf6 13.Nf4 0-0?? (better is 13...Bf7+/–) 14.Ncd5+– Nd5 15.Bc4 c6 16.bc6 b5 (16...Qd6 17.Nd5 Kg7 18.Ne7 h6+–) 17.Bd5 (17.Nd5 bc4 18.Ne7 Qe7+=) 17...Kg7 18.Ne6 (18...Kh8 19.Nd8 Bd8 20.c7 Bc7 21.Ba8+–) 1–0. Fritz 8 – NN, 2005.

5.c4 c6=.

5.c4= Be6 6.Qc2 (6.cd5 Bd5 7.Nf3 Nd7=) 6...Nf6 7.Nf3 Nbd7 8.a4 h6 9.Be2 0-0 10.cd5 Bd5 11.Nc3 Bb7 12.Nh4 Nd5 13.Nf5 Nb4 14.Qd1 Qg5 (< 14...Bg2 15.Rg1 Bb7 16.Rg7 Kh8 17.Qb1+/–) 15.Nd6 cd6 16.Qb3? (better is 16.Ba3!? Qg2 17.Rf1=+) 16...Qg2 (16...Bg2 17.Qb4 Bh1 18.0-0-0–+) 17.0-0-0? (better is 17.Rf1!? a5 18.ba6 Na6 19.Qa3–/+) 17...Nd5 18.Rhg1 Qf2 19.Rdf1 Qh2 20.Rh1 Nc5 21.Qa3 Nd3?? (better is 21...Qg3 22.Rhg1 Qh4–+) 22.Bd3+– Qh1 23.Rh1 Nc3 24.Rh4 (24.Qc3?! Bh1 25.Bf5 Bb7=; 24.Bc3?! Bh1 25.Qd6 Rfe8+–) 24...Nd5 25.Qd6 Rac8 26.Kb1 f6 (26...Rfe8 27.Rg4 (27.Be5?! Rcd8=) 27...Re6 28.Qd7+–) 27.Qe6 Rf7 28.Be4 (28.Bg6 Rcf8+–) 28...Nc7 29.Qf5 (better is 29.Bh7! Kh7 30.Qf7 Bd5+–) 29...Be4 30.Re4 Re8 31.Rc4 Ne6 32.d4 ed4 33.ed4 Rd7 (33...Nf8 34.d5+–) 34.d5 (better is 34.Rc8! Rdd8 35.Rd8 Nd8+–) 34...Ng5 (34...Nf8+–) 35.Qd7 (35...Rf8 36.Rc7+–) 1–0. Otte,Marco – Bijlmakers,Steef, Wag.Intcomp Wageningen, 2000.

5.c4 Nf6 (--> 4.e3 Nf6 5.c4 a6).

5.Be2 Ne7 6.c4 (6.d4 e4=) 6...c6 7.cd5 (7.d4 ed4 8.Qd4 f6=) 7...Nd5=+ 8.Qb3 (8.Bf3=+) 8...Bd7 (8...0-0 9.Nf3 Bg4 10.Ne5 Be2 11.Ke2 Be5 12.Be5+=) 9.e4 (better is 9.Bc4!? Be6 10.bc6=) 9...Nf4–/+ 10.Qg3 Qe7 (10...0-0!?–/+) 11.bc6 (better is 11.Qg7!? Qf8 12.Qf6 Ng2 13.Kd1=) 11...Nc6 12.Nf3 Nb4 13.Na3? Nbd3–+ 14.Bd3 Nd3 (15.Kf1 Nb2 16.Qg7 0-0-0 (16...Ba3 17.Qh8 Qf8 18.Qe5 Qe7 19.Qh5=) 17.Rc1 Kb7–+; 14...Ba3?! 15.Ba3 Nd3 16.Ke2 Qa3 17.Ne5=+) 0–1. Langguth,Wilhelm – Ward,R, corr ICCF Cup8/9 V186, 1990.

5.Be2 Nf6 6.Nf3 e4 7.Nd4=.

5.Nf3 Bg4 6.c4 Nf6 7.cd5 Nd5 8.Be2 Nd7 9.h3 Bh5 10.0-0 0-0 11.Nc3 Nc3 12.Bc3 f5 13.a4 Qe8 14.Nh4 Be2 15.Qe2 Qe7 16.Nf3 Rae8 17.a5 Nf6 18.g3 Nd5 19.Bb2 h6 20.ab6 ab6 21.Nh4 Kh7 22.Qh5 Qf6 23.f4 g6 24.fe5 Be5 25.Be5 Re5 26.Qf3 g5 27.Ng2 Ne7 28.Ra7 Rc5 29.d4 Rc3 30.Qe2 Nd5 31.Kh2 Qd6 32.e4 Qg3 33.Kh1 Qh3 34.Kg1 Ne3 35.ef5 Rf7 36.f6 Ng2 37.Qg2 Rg3 0–1. RichardSommer (2095) – Tarek_M_Fathy (2130), lichess.org, 2020.

4.e3 c5

5.a4 f5 6.c4 (6.Nf3 Qe7=+) 6...d4 7.g3 (7.a5 Nf6=+) 7...Nf6–/+ 8.Bd3 (8.a5 0-0–/+) 8...e4 9.Be2 (9.Bf1 d3–/+) 9...0-0 (9...d3 10.Bf1–+) 10.h3 (better is 10.ed4!? cd4 11.Bd4 Bg3 12.hg3 Qd4 13.Ra3=+) 10...d3–+ 11.Bf1 Be6 12.Na3 Qc7 13.f4 (13.Bg2 Nbd7–+) 13...Qf7 (13...ef3 14.Bd3 Bg3 15.Kf1–+) 14.g4 fg4 15.hg4 Bg4 16.Qc1 Nh5 17.Bh3 Qf5 18.Bg4 Qg4 19.Rh5 Qh5 20.Kf1 Be7 21.Qd1 Qd1 22.Rd1 g5 23.Nh3 g4 24.Nf2 h5 25.Kg1 Nd7 26.Kh1 Nf6 27.Rg1 Kh7 28.Nb1?! Rae8 29.a5 Bd8 30.Bc3 b6 31.a6 Rg8 32.Rg3 Kh6 33.Nd1 h4 34.Rg1 g3 35.Kg2 Kh5 36.Bf6 Bf6 37.Kf1 h3 (38.Rg2 hg2 39.Kg2 Kg4–+) 0–1. riverborne – ossie20, Caissa.com, 2004.

5.a4 Nf6 6.d4 ed4 7.ed4–/+.

5.a4 Nf6 6.Ne2 0-0 7.Ng3 Bg4 8.Be2 Be2 9.Qe2 d4 10.e4 Nbd7 11.d3 Rc8 12.Nd2 g6 13.Nc4 Nb6 14.Nd6 Qd6 15.a5 Nbd7 16.c4 dc3 17.Bc3 Rfd8 18.0-0 Nf8 19.Rfd1 Ne6 20.Qb2 Nd4 21.Ne2 Rc7 22.f3 Ne2 23.Qe2 Rcd7 24.Qb2 Re7 25.g4 Nd7 26.Kf2 g5 27.Ke3 f6 28.Qf2 h6 29.h4 Nf8 30.hg5 hg5 31.Rd2 Ng6 32.Rh1 Qd7 33.Rh5 Qb5 34.Qh2 Rdd7 35.Rd1 Qb3 36.Qd2 Nf4 37.Rh6 Rd3 38.Qd3 Nd3 39.Rd3 Kg7 40.Rh2 Qe6 41.Rb2 Rd7 42.Rbd2 Rd3 43.Rd3 b5 44.ab6 ab6 45.Rd5 Qc6 46.Rd8 b5 47.Ba5 b4 48.Rb8 Qa4 49.Bd8 c4 50.Rb7 Kg6 51.Rb6 Qa7 52.Ke2 Qa2 53.Kf1 b3 54.Bf6 Kf7 55.Be5 Qb1 56.Kg2 Qc2 57.Kg3 c3 58.Rc6 b2 59.Rc3 b1Q 60.Rc2 Qc2 61.Bd6 Ke6 62.e5 Qe2 0–1. Abdullaevich (1745) – ADV0KAT38RUS (2015), lichess.org, 2017.

5.c4 d4 6.e4 Nf6 7.d3 (7.Qc2 A) 7...0-0 8.Nf3 (8.Be2 a6 9.Na3 ab5 10.Nb5 Nc6 11.Nf3 Be7 12.0-0 Nb4 13.Qb1+=; 8.Na3 Nh5 9.g3 Nd7 10.Be2 Nhf6 11.Nf3 b6 12.0-0 Qc7 13.Nh4+=) 8...a6 9.Na3 b6 10.Be2 Nbd7 11.ba6 Ra6 12.Nb5 Be7 13.0-0=; B) 7...a6 8.Nf3 (8.Na3 ab5 9.Nb5 0-0 10.Nf3 Nc6 11.Be2 Be7 12.0-0 Nb4 13.Qb1+=) 8...0-0 9.Na3 b6 10.Be2 Bb7 11.d3 Nfd7 12.0-0 f5 13.ef5+=) 7...0-0 (7...a6 8.a4 (8.Qa4 Nbd7 9.Bc1 Nb6 10.Qb3 ab5 11.Qb5 Bd7 12.Qb2 Qc7 13.Bg5–/+) 8...Nbd7 9.Be2 Qa5 10.Qd2 Bc7 11.Nf3 Qd2 12.Nbd2 ab5 13.ab5+=) 8.h3 (8.Nf3 a6 9.ba6 Na6 10.Be2 Nb4 11.a3 Nc6 12.0-0 Be6 13.Qb3+=; 8.Be2 a6 9.ba6 ba6 10.Nf3 Nbd7 11.0-0 Rb8 12.Bc1 Re8 13.Nbd2+=) 8...h6 (8...a6 9.Qa4 Nbd7 10.Nf3 Nb6 11.Qc2 ab5 12.cb5 Na4 13.Bc1–+) 9.Nf3 Nh7 (9...a6 10.ba6 Na6 11.Be2 Nb4 12.a3 Nc6 13.Nbd2+=) 10.g3 (10.Be2 a6 11.Qa4 Ng5 12.Nbd2 Nd7 13.0-0+=) 10...f5 (10...a6 11.Qa4 Qf6 12.Bg2 Nd7 13.Bc1+=) 11.ef5 Bf5 12.Bg2 (12.Nh4 Be6 13.Bg2+=) 12...Nf6 (12...e4 13.Nh4+=) 13.Nh4 Bc8 14.0-0 Qc7 15.Nd2 g5 16.Nhf3 Bf5 17.Qe2 Nbd7 18.Nh2 Rae8 19.Ne4 b6 20.Bc1 Kg7 21.Bd2 Ne4 22.de4 Bg6 23.a4 Nf6 24.a5 Qb7 25.ab6 ab6 26.Ra6 Ra8 27.Rfa1 Ra6 (better is 27...Be4!? 28.f3 Bg6–/+) 28.ba6= Qc6 29.f3 Ra8 30.Be1 Bf7 31.Nf1 Qc8 32.a7 Qb7 33.Qa2 b5 34.Qa6 Qd7 (better is 34...Qa6 35.Ra6 Bc4 36.Rd6 Ra7+=) 35.cb5+/– Bc4 36.Qc6 Qc6 37.bc6 Bb5 38.Nd2 c4? (better is 38...Ne8+=) 39.Ra5+– c3 40.Rb5 cd2 41.Rb7 Kg6 42.Bd2 Ne8 43.Ba5 Bc5 44.Bb6 Bb6 45.Rb6 Nc7 46.Rb7 Nb5 (46...Ne8+–) 47.Rb5 Ra7 1–0. Wiszniowski,Eugeniusz (1750) – Twarogiel,Tadeusz, Sielpia Wielka k. Konskich Poland, 2010.

5.c4 d4 6.Be2 Nf6 7.d3 0-0 8.Nf3 Re8 9.0-0 a6 10.a4 de3 11.fe3 e4 12.Nh4? (12.Ng5 Ng4 13.Bg4 Qg5 14.Bc8 Rc8 (14...Qe3? 15.Kh1 Qh6 16.Bh3+–) 15.de4 Qh6=) 12...Bh2 (better is 12...ed3 13.Qd3 Ng4–/+) 13.Kh2= Ng4?? (better is 13...ed3 14.Bf6 Qc7 15.g3 de2 16.Qe2 gf6=) 14.Bg4+– Qh4 15.Kg1?? (better is 15.Bh3+–) 15...Bg4–+ (worse is 15...Qg4 16.Nc3 ed3 17.Qd3 ab5 18.ab5 Ra1 19.Ba1–/+) 16.Qd2 ed3 17.Qd3 Qg5 18.Rf4 Nd7 19.Qd5 Qd5 20.cd5 f5 21.Kf2 Rac8 22.Nd2 g5 23.Rc4 Nb6 24.Rg4 fg4 25.e4 c4 26.Bc3 Nd7 27.Ke3 ab5 (27...Nc5 28.Kd4–/+) 28.ab5 Rc5 29.Ra7 (29.Kd4 Rec8–/+) 29...Rb5 (29...Rd5! 30.Nc4 Re6 31.Rb7–+) 30.Kd4–/+ Re7 (30...Rc8!? 31.Nc4 Rbc5–/+) 31.Nc4+= Rb1 32.Ra1 (32.Ra8!? Nf8 33.e5 Rd1 34.Ke4=) 32...Ra1–/+ 33.Ba1 h5 34.Ke3? (better is 34.Ne3–/+) 34...h4–+ 35.Nd6 h3 36.gh3 gh3 37.Nf5 Rh7 38.Ng3 h2 39.Nh1 Re7 (39...Rf7 40.Ke2–+) 40.Bc3 (40.Bd4 Rf7 41.Ke2 Rf4–+) 40...Rf7 41.Ke2 Nf6 42.Bf6 Rf6 43.Ng3 Rf4 44.Ke3 (44.e5 Rg4 45.d6 Rg3–+) 44...Rg4 45.Nh1 Rg1 46.d6 (46.Kf2–+) 46...Rh1 47.Ke2 Kf7 48.e5 Ke6 0–1. von Herman,A – Sonnenburg,H, 2.DBLNO, 1992.

5.Be2 Be6 6.f4+= Nd7 7.Nf3 Ngf6?? (better is 7...f6 8.fe5 Ne5+=) 8.fe5+– Bc7 (8...Ne5 9.Be5 Be5 10.Ne5+–) 9.ef6 Nf6 10.c4! dc4 11.Qc2 0-0 (11...Qd5 12.Bf6 gf6 13.Nc3+–) 12.Ng5 g6 (12...Qd7 13.0-0 h6 14.Ne6 fe6+–) 13.Qc3 Kg7 (13...Bd5 14.Qf6 Qf6 15.Bf6+–) 14.Ne4 a5 (14...Ba5 15.Qf6 Qf6 16.Bf6 Kh6+–) 15.Nf6 Kh6 16.0-0 (better is 16.h4 Bg3 17.Kd1+–) 16...Qd6 17.Ng4 Kg5 (17...Kh5 18.Qg7 Qh2 19.Nh2 Kh4 20.Qh6 Kg3 21.Rf3) 18.Qf6 Kh5 19.Nh6! Bg4 (19...Kh6 20.Qh4) 20.Bg4 (20.Bg4 Kh6 21.Qh4) 1–0. pierre – jamesmack, internet, 2014.

5.Be2 Nf6 6.c4 d4 7.d3–/+.

5.Nf3 Nd7 6.c4 d4 7.Bd3+=.

5.Nf3 Nd7 6.Be2 Ngf6 7.0-0 0-0 8.c4 d4 9.ed4 ed4 10.Bd3 Ne5 11.Qc2? (11.Ne5 Be5 12.Re1 Re8–/+) 11...Nd3?? (11...Nf3 12.gf3 Qd7–+) 12.Qd3–/+ Re8 13.a4 g6 14.Na3 Bf5 15.Qb3 Be4 16.Rfe1 Bf3 (better is 16...Qa5!?–/+) 17.Qf3= Re1 18.Re1 b6 19.Nc2 Qc7?? (better is 19...a6=) 20.Qa8+– (20.Qf6?! Bh2 21.Kf1 Qf4 22.Qf4 Bf4+–) 20...Kg7 21.g3 Nh5 22.Ne3 Be5 (22...Nf6 23.Nd5 Nd5 24.Qd5+–) 23.Ng2 (better is 23.Nd5 Qb8 24.Qc6 g5+–) 23...Ng3 (23...Nf6+–) 24.hg3 Bg3 (24...f6 25.Qc6 Qf7 26.a5+–) 25.fg3 Qg3 26.Qe4 h5 (26...g5 27.Qe7 Qd3 28.Qg5 Qg6 29.Qe5 Qf6 30.Qb8+–) 27.Qe5 (better is 27.Bd4 cd4 28.Qd4 Kh6+–) 27...Qe5 28.Re5 Kf6 29.Rd5 Ke6 30.Nf4 Ke7 31.a5! ba5 (31...h4 32.Ba3 h3 33.Bc5 bc5 34.b6+–) 32.Rc5 Kd6 33.Rc6 Kd7 34.Ra6 g5 35.Nd5 White prepares b6 35...f5 36.Ra7 Kd6 (36...Kc8 37.Rc7 Kb8 38.Bd4 Ka8 39.Ba7 a4 40.Nb6) 37.b6 (37.b6 d3 38.b7 Kc6 39.b8Q a4 40.Qc7; 37.Ba3 Ke5 38.Re7) 1–0. jura1946 – feco, internet, 2012.

5.Nf3 Qe7 6.d3 Nf6 7.c4 d4 8.Be2 0-0 9.0-0 a6 10.a4 a5 11.Nfd2 b6 12.Bf3 Ra7 13.Re1 Qc7 14.Ne4 Ne4 15.Be4 f5 16.Bd5 Kh8 17.ed4 ed4 18.g3 Nd7 19.Nd2 Nf6 20.Bg2 Bb7 21.Nf3 Qf7 22.Ne5 Be5 23.Re5 Ng4 24.Re2 Bg2 25.Kg2 f4 26.Re4 f3 27.Kg1 Qh5 28.Qf3 Qh2 29.Kf1 Qf2 30.Qf2 Nf2 31.Re2 Nd3 32.Kg2 Raf7 33.Rd1 Rf2 0–1. RichardSommer (2110) – AndreyS33 (1965), lichess.org, 2020.

5.Nf3 Qe7 6.Be2 Nf6 7.d4 e4 8.Ne5 c4 9.f4 (9.a4 a6+=) 9...Nfd7 (9...ef3!? 10.Bf3 Nbd7–/+) 10.Nc3 Bb4 (worse is 10...Ne5 11.de5 Bb4 12.Qd5+–) 11.0-0 Qd6 (better is 11...Nf6=) 12.Nd5!+– Ne5? (12...Qd5 13.Bc4 Decoy) 13.de5 Qc5 14.Qd4 (14.Nb4?! Qb4 15.Qd4 Qb5 16.Bc4 Qb6+–) 14...Be6 (14...Qd4 15.Bd4 Ba5 16.Bc4 Bd8+–) 15.Qc5 Bc5 16.Nc7 Kd8 17.Ne6 (better is 17.Na8 Be3 18.Kh1+–) 17...fe6 18.Kf2 Rf8 19.g3 g5 20.Bd4 Ba3 (20...Bd4 21.Rad1+–) 21.Bc4 Ke7 22.Ke2 g4 (22...Rc8 23.Bb3+–) 23.h3! gh3 24.Rh1 Nd7 25.Rh3 Rf7 26.Rh6 Nf8 27.Rb1 Rc8 28.Bb3 b6 (28...Bc5 29.Rd1+–) 29.Rd1 Rg7 30.Kf2 Ng6 31.Rdh1 Nf8 32.R1h4 Kd7 (32...Bc5 33.g4 Bd4 34.ed4+–) 33.f5! Rf7 (33...ef5 34.e6 Double attack (34.e6 Passed pawn)) 34.g4 Bc5 (34...Ke8 35.Kg3+–) 35.Ke2 (35.Re6 Kd8 36.Rc6 Rc6 37.bc6 Rc7+–) 35...Bd4 (35...Kd8 36.c3+–) 36.ed4 Rg7 37.fe6 Ke8 38.d5 Ng6 (38...Rc5 39.Ke3+–) 39.Rh7 Rg8 40.R4h6 Ne5 (40...Nf8 41.Ra7 Ng6 42.d6+–) 41.d6 Rc3 42.Rh8 Rf8 43.Rf8 Kf8 44.e7 (44.e7 Kg7 45.e8Q Kh6 46.Qh5 Kg7 47.Qe5 Kh6 48.Qc3 Kg6 49.d7 a6 50.Qc6 Kg5 51.d8Q Kf4 52.Qdd6 Kg4 53.Qe4 Kg5 54.Qdg6) 1–0. Neuwald,Volker (1780) – Wagner,Martin (1945), Baden–ch HT4, 1994.

5.Nf3 f6 6.d4 (6.c4 Ne7=) 6...Bg4 (6...cd4 7.ed4 e4 8.Nfd2=) 7.Be2 (7.h3 Bf3 8.Qf3 cd4 9.ed4=) 7...Qc7 (7...cd4 8.ed4 e4 9.Nfd2 Be2 10.Qe2= (worse is 10.Ke2 Qd7 11.Nc3 Ne7–/+)) 8.dc5 (8.de5 fe5 9.Qd5 Nf6+/–) 8...Bc5 (8...Qc5!? 9.Ba3 Qc7 10.Bd6 Qd6=) 9.Qd5+/– Ne7 10.Qb3 Nd7 (10...Bf5 11.0-0+/–) 11.Nbd2 (11.Ng5 Bb4 12.Qb4 Be2+–) 11...Bb6 (11...Bf5 12.Nh4+/–) 12.Ba3 (12.Ng5 fg5 13.Bg4 Ba5+–) 12...Nc5 (12...Bc5 13.Rd1+/–) 13.Qb4 (13.Bc5!? Qc5 14.Ne4 Ba5 15.c3+/–) 13...Rd8?? (better is 13...e4 14.Nd4 Be2 15.Ne2 Rd8+=) 14.Qg4+– (14.Qg4 0-0 15.Qc4 Kh8 16.Nb3+–) 1–0. Navratil,F – Olej,Emil, corr CSR–chT, 1964.

5.Nf3 Bg4 6.Be2 Nd7 7.c4 Ngf6 8.cd5 Nd5 (8...e4 9.Ng1 Be2 10.Ne2=+) 9.Nc3= N5f6 (9...Nc3!? 10.dc3 Nf6=) 10.h3+= Bh5 11.0-0 0-0 12.g4 Bg6 13.Nh4 Rc8 (13...Nb6 14.d3+=) 14.Ng6+/- fg6 (14...hg6 15.Bf3 Rc7 16.g5+/-) 15.g5 Ne8 16.Ne4 Be7 17.Bc4 (17.Qb3 Kh8 18.Qd5 Qc7+/-) 17...Kh8 18.Qg4 Nd6 19.Be6 Rc7 20.Nc3 (20.Nd6 Bd6 21.d3+=) 20...Bg5? (better 20...Nb6!? 21.a4 Bg5+=) 21.Nd5+/- h5 22.Qg2 Rc8 23.f4 ef4 (23...Re8 24.Bd7 (24.fg5 Re6 25.a4 c4-/+) 24...Qd7 25.fg5 Qb5 26.Rab1+/-) 24.Bd7 Qd7 25.Qg5 Rf5 26.Qe7 Qe7? (26...Rf7 27.Qd7 Rd7 28.Nf4 Kh7+-) 27.Ne7 Rg5 (27...Rd8 28.Nf5 Nf5 29.Rad1+-) 28.Kh2 Re8 (28...Rd8 29.ef4 Ne4 30.fg5 Rd2 31.Kg1 Rb2 32.Ng6 Kh7 33.Nf8 Kg8 34.Ne6+-) 29.ef4 Re7 30.fg5 Re2 31.Kg1 Rd2 (31...Kg8+-) 32.Rad1 Rb2 (32...Rd1 33.Rd1 Nb5+-) 33.Rd6 Rb5 (33...Ra2 34.Rf8 Kh7 35.Rdd8 Ra1 36.Kf2 Ra2 37.Ke3 Ra3 38.Ke4 Ra4 39.Ke5 Re4 40.Ke4 c4 41.Rh8) 34.Rd8 Kh7 35.Rff8 Rb1 36.Kf2 Rb2 37.Ke3 (37.Ke3 Re2 38.Ke2 c4 39.Rh8) 1-0. onur604 (2320) - PikaBat3 (2255), Casual Rapid game, 2021.

5.Nf3 Bg4 6.Be2 Nd7= 7.h3 Bh5 (7...Bf5 8.d3=) 8.0-0 (8.c4 Ngf6 9.g4 Bg6+=) 8...Ne7 (8...Ngf6 9.d3=) 9.Nc3 Nf6 (9...e4 10.Nh4 Be2 11.Qe2=) 10.a4 (10.Ne5!? Be2 11.Ne2+/–) 10...0-0 (10...Bg6=) 11.Nh2 (better is 11.Ne5!? Be5 12.Bh5+=) 11...Bg6–/+ Black prepares the advance e4 12.d3 (12.a5 d4 13.Na4 Ned5–/+) 12...Qc7 (12...d4 13.Nb1 de3 14.Na3–/+) 13.g3? (13.Ng4 Nd7–/+) 13...e4 (13...d4 14.Ne4 Ne4 15.de4 Be4 16.Nf3–+) 14.Kg2 (better is 14.Ng4!?+=) 14...h5–+ 15.Rh1 (15.a5 Be5–+) 15...Rad8 (15...Be5 16.b6 ab6 17.Nb5–+) 16.Nf1 (16.g4 d4 17.ed4 ed3 18.Bd3 Bd3 19.cd3 Ng6–+) 16...ed3 (16...Nf5 17.Qe1–+) 17.cd3 (17.Bd3 h4–+) 17...c4 (17...h4 18.Qb3 Qd7 19.Qc2–+) 18.d4 (18.a5 Bb4 19.Rc1 Qa5–+) 18...a6 (18...Nf5 19.Rg1–+) 19.f3 Nf5 (better is 19...h4 20.g4 Bh7–/+) 20.Qe1? (better is 20.g4 Nh4 21.Kg1–/+) 20...Rfe8–+ 21.Bc1 Bb4 22.g4 (22.Bd2 h4! 23.gh4–+) 22...Nd4! 23.Bd2 (23.ed4 Bc3 Double attack (23...Bc3 Decoy)) 23...Nc2 24.Qd1 (24.Qc1 d4 25.Ne4 Ne4 26.Bb4 d3–+) 24...Na1 (better is 24...d4 25.b6 Qb6 26.a5–+) 25.Qa1 h4 (25...d4 26.Ne4 Be7 27.ed4 Ne4 28.fe4 Be4 29.Bf3–+) 26.g5 (26.ba6 ba6 27.Nb5 Qe7 28.Bb4 Qb4–+) 26...Nh5 27.Qb2 Bc3 (27...Qe7 28.e4 de4 29.f4–+) 28.Bc3 ab5 29.Qb5 (29.ab5 Qe7 30.Bd4–+) 29...Nf4! 30.Kf2 (30.ef4 Re2 Double attack (30...Re2 Pinning; 30...Re2 Deflection; 30...Re2 Decoy)) 30...Ne2 31.Ke2 (31.Ba5 Qe5 32.Bd8 Ng3–+) 31...Bd3 32.Kf2 (32.Kd1 Bf1 33.Ba5 Qg3 34.Rf1 Re3–+) 32...Bf1 33.Kf1 (33.f4 Bd3 34.Qb2–+) 33...Re3 34.Ba5 Qg3 35.Bd8 (35.Qd5 Rd5 36.Bd2 Rd2 37.Rg1 Rf3) 35...Re1 0–1. Baer,Cy (1895) – Schroeder,Marcel (1980), RSS5E NoEngine–26, 2007 (even known as Beckmann–Gerstner).

5.Nf3 Bg4 6.Be2 e4 7.Ne5 Be2 8.Qe2=.

5.Nf3 Bg4 6.h3 Bf3 7.Qf3 Nf6+=.

5.f4 Qe7 6.Nf3 Bg4 7.fe5 Bf3 (7...Be5 8.Be5 Bf3 9.Qf3) 8.Qf3 (8.ed6?! Qh4 9.g3 Qb4) 8...Be5 9.Be5 Qe5 10.Nc3 Nf6 11.Bd3 (11.Bc4!+/–) 11...0-0 12.0-0 Nbd7 13.Qh3 h6 14.Rf5 Qd6 15.Raf1 Rae8 16.Rf6?? (16.R5f4+=) 16...Nf6 17.Qh4 Ne4 18.Be4 de4 (18...Re4?! 19.Ne4 de4 20.Qe4 Qd2 21.Qb7 Qe3=) 19.Ne4 Re4 (19...Qd5!? 20.d3 Qa2–/+) 20.Qe4 Qd2 21.a4 Qd7 22.Qd3 Rd8 23.Rd1 Qd3 24.cd3 f5 ½–½. Frenzel,Lothar – Husslein, corr private, 1998.

4.e3 c6

5.a4 cb5 6.ab5 a6 7.Nf3= Nd7 8.Nc3 Ngf6 9.Ng5 (9.ba6 ba6 10.Be2 Rb8=) 9...h6 10.Nf3 0-0 11.h4 (11.Be2 Nb6=+) 11...Re8 12.Ng5 (12.Be2 Nb6-/+) 12...Nf8 (better 12...hg5 13.hg5 Nh7-/+) 13.Nd5? (better 13.Nf3!?-/+) 13...Nd5-+ 14.Bc4 Be6 (14...hg5 15.Bd5 g4 16.ba6 Ra6 17.h5-+) 15.Qf3 (15.Ne6 fe6 16.Qf3 Qc7 17.Bd5 ed5 18.Qd5 Kh8-+) 15...Nb4 (15...hg5 16.Bd5 g4 17.Qe4 Bd5 18.Qd5-+) 16.Be6 fe6 (16...Ne6?! 17.Qf7 Kh8 18.Ne6=+; 16...Re6 17.Qf7 Kh8 18.Ne6 Ne6 19.Qe6 Nc2 20.Ke2 Na1 21.Ba1 ab5 22.Be5 Be5 23.Qe5+/-; 16...Nc2?! 17.Kd1 fe6 18.Qf7 Kh8 19.Kc2-/+) 17.Qf7 Kh8 18.0-0-0? (18.Rc1 Re7 (18...hg5 19.hg5 Nh7 20.g6 Nd3 21.cd3 Qh4 22.Rh4 ab5 23.Rh7) 19.Qh5 Kg8-+) 18...Qc7 (better 18...Qc8 19.Bc3 Qc4 20.Qe8 Qa2 21.Nf7 Kg8-+) 19.Qc7 Bc7 20.Ne4 (20.Ba3!?-/+) 20...ab5-+ 21.d4 (21.Kb1 Nd5-+) 21...Rec8 22.Nc5 (22.Rd2 ed4 23.Bd4 Nc6-+) 22...Bd6 23.c3 (23.Kb1 ed4 24.Nb7 Be7 25.Rd4 Nc2-+) 23...Bc5 24.dc5 Rc5 25.Kd2 (25.Kb1 Na2-+) 25...Nd5 (25...Rd5 26.Ke2 Ra2 27.cb4 Rb2 28.Kf3 Rb4 29.Ra1-+) 26.Ke2 (26.Rc1 Nb6-+) 26...Ra2 (26...Nc3 27.Bc3 Rc3 28.Rd2-+) 27.Rd2 Nc3 (better 27...Nd7-+) 28.Bc3-/+ Rd2 29.Bd2 (29.Kd2 e4 30.Bb4 Rd5 31.Ke2-/+) 29...Rc2 (better 29...e4!?-/+) 30.Rb1=+ Nd7 31.Rb5 b6 32.Kd3 (32.e4 Kh7=) 32...Rc5 33.Rc5 Nc5 34.Kc4 Kg8 (34...e4 35.Ba5 Nd7 36.Bc3=) 35.Kb5 (35.Bb4 Nd7=) 35...Nd3 36.f3 Kf7 37.Kb6 Kf6 (37...e4!? 38.Bc3 h5=) 38.e4 Nf4? (better 38...h5+/-) 39.g3?? (39.Bf4 ef4 40.Kc6+-) 39...Ne2=+ 40.g4 (40.Be1 Nd4 41.Ba5 g5=+) 40...Nd4-/+ 41.f4 ef4 42.Bf4 e5 (better 42...Nf3!?-/+) 43.g5= Kg6 (43...hg5 44.Bg5 Ke6 45.Kc5=) 44.Be5 Nf3 45.Bg3 hg5 6.hg5 Kg5 47.e5 (better 47.Kc6!?=) 47...Kf5-/+ 48.Kc5 Ne5 49.Kd5 (49.Kd4 Nc6 50.Kd5 Ne7 51.Kd4 g5-/+) 49...Nf3 50.Kc4 (50.Bd6 g5-/+) 50...g5 (50...Ke4 51.Bd6-+) 51.Kd3-/+ Kg4 52.Bb8 Kh3 53.Ke2 g4 54.Kf2 Ng5 55.Kg1 Ne4 56.Kh1 Ng5 57.Kg1 Ne6 58.Kh1 Kh4 59.Kg2 Kg5 60.Kg3 Kf5 61.Bd6 Nd4 62.Bb8 Ne2 63.Kg2 Ke4 64.Kf2 Nf4 (better 64...Nc3-/+) 65.Kg3 Kf5 66.Bf4 Ke4 67.Kg4 ½-½. chessbit (1945) - CgaDeaimann (1945), Rated Rapid game, lichess.org, 2020.

5.a4 cb5 6.Nf3 Qe7 7.ab5 Bg4 8.Be2 b6 (8...Nf6 9.0-0=) 9.h4 (9.h3 Bf5+=) 9...Nf6 10.Ng5 Be2 11.Qe2 (worse 11.Ke2 Qd7 12.Nc3 d4 13.ed4 ed4-/+) 11...h6 (11...0-0 12.Nc3=) 12.Nf3= Nbd7 13.Nc3 0-0 (13...Qe6=) 14.Ng5 (better 14.g4!? Ng4 15.Nd5=) 14...d4-/+ (worse 14...hg5 15.hg5 Qe6 16.gf6 Nf6 17.Ra4+/-) 15.Nce4 Ne4 (15...de3 16.Qe3 A) 16...hg5? 17.hg5 Nh5 18.Qh3+- (worse 18.Rh5 Qe6+-); B) 16...Nd5=) 16.Ne4= de3 17.fe3 Qf6?? (better 17...Nc5 18.Nd6 Qd6=) 18.Nf6+- Nf6 19.0-0 (better 19.g4 Nh7+-) 19...Ne4 (19...Rfe8 20.d3+-) 20.Rf3 (better 20.Qd3 Ng3 21.Qd6 Nf1 22.Qe5 f6 23.Qe6 Kh8 24.Kf1 Rfe8+-) 20...Bc5 (20...Nf6 21.Raf1 Rad8 22.Rf6+-) 21.Be5 (21.Qd3 Nf6 22.Be5 Be7+-) 21...Rfe8 (21...Bd6 22.Bd6 Nd6 23.e4+-) 22.d4 Be7 23.Qd3 Nf6 24.Bf6 Bf6 25.Raf1 Re7 26.Qf5 (26.Rf6 gf6 27.Rf6 Kg7+-) 26...Bh4 (26...Rae8 27.Qg4 Kf8 28.Qh5+-) 27.Qg4 (better 27.Qh5!? Bg5 28.Rf7 Rae8+-) 27...Bg5 28.d5 (28.e4 Rc7+-) 28...Rae8 (28...Be3 29.Kh1 Rd8 30.d6 Rd6 31.Rf7 Rf7 32.Qc8 Kh7 33.Rf7 Rd1 34.Kh2+-) 29.Qf5 (29.d6!? Re5 30.Rf7 Rd8+-) 29...f6 (29...g6 30.Qd3 Re3 31.Re3 Re3 32.Qc4+-) 30.d6 Re5 (30...Be3 31.Kh2 Re5 32.Qg6+-) 31.Qd7 Be3 (31...Ra8 32.Qb7 Ree8 33.Ra1+-) 32.Re3! Re3 33.Qa7 Rd8 34.Qb6 Rd7 (34...Ree8 35.c4 Rd7 36.c5+-) 35.Qc6 (better 35.Qe3 Rd6 36.Qe7+-) 35...Rd8 36.d7 Re7 37.Rd1 Kf7 38.b6 Re6 39.Qc8 Ke7 40.b7 (40.b7 g6 41.Qd8 Kf7 42.b8Q Re1 43.Re1 f5 44.Qe7) 1-0. chessbit (1950) - alexacuatic (1925), Rated Rapid game, lichess.org, 2020.

5.a4 c5 6.c4 d4 7.ed4 ed4 8.Nf3 Nf6 9.Be2 0-0 10.0-0 Re8 11.d3 b6 12.Nfd2 Bb7 13.Bf3 Qc7 14.Bb7 Qb7 15.Qf3 Qf3 16.Nf3 Nbd7 17.Nbd2 a6 18.Rfe1 ab5 19.ab5 Ra1 20.Ba1 Re1 21.Ne1 Ng4 22.Ne4 Bh2 23.Kh1 Bc7 24.Nf3 f5 25.Ng3 Nf2 26.Kg1 Nd3 27.Nf5 N7e5 28.Ne5 Ne5 29.Ne7 Kf7 30.Nc6 Nc4 31.Bd4 cd4 32.Nd4 Bd6 33.Kf1 Bc5 34.Nc6 Na3 35.Ne5 Ke6 36.Nc6 Nb5 37.Ke2 Nd4 38.Nd4 Bd4 39.Kd3 Bc5 40.g3 g5 41.g4 Ke5 42.Ke2 Kf4 43.Kf1 Kg4 44.Kg2 h5 45.Kh2 h4 46.Kg2 Kf4 47.Kh3 Kf3 48.Kh2 g4 49.Kh1 h3 50.Kh2 Kf2 51.Kh1 b5 52.Kh2 b4 53.Kh1 b3 54.Kh2 b2 55.Kh1 b1Q 56.Kh2 0–1. axtur777 – Zapatero, lichess.org, 2019.

5.a4 Bd7 6.Nf3 cb5 7.ab5 Nf6 8.Ne5 Be5 9.Be5 0-0 10.Bd3 Ng4 11.Bd4 Qh4 12.Qe2 Qe7 (12...a6 13.Nc3 Re8 14.g3+-) 13.Nc3 (13.Ba7?! b6 14.Ra3 Be6 15.Bb8 Ra3 16.Na3 Rb8+-) 13...Be6 (13...Qg5 14.f4 Qh5 15.Qf3+- (15.Ba7?! d4 16.Ne4 de3+-; worse 15.Ra7 Ra7 16.Ba7 Be6+-)) 14.Nd5! (14.Ba7?! b6 15.Ra4 Ra7 16.Rg4 Ra1 17.Nd1 Bg4 18.Qg4 Nd7=; 14.Ra7?! Ra7 15.Ba7 Nd7+-) 14...Bd5 15.Qg4 f6 (15...g6+-) 16.Qf5 g6 (16...Rd8+-) 17.Qd5 Kh8 (17...Kg7 18.Qc5 Qc5 19.Bc5+-) 18.0-0 (18.Bc5!? Qd7 19.Qd7 Nd7 20.Bf8 Rf8 21.Ra7 Nc5+-) 18...Nd7 (18...a6 19.Bc5 Qd7 20.Qd7 (20.Bf8?! Qd5 21.Bb4 Kg7+-) 20...Nd7 21.Bf8 Rf8 22.ba6 ba6 23.Ba6+-) 19.Qb7 Qd6 (19...Qe8 20.Ra7 Ra7 21.Qa7+-) 20.Qf3 (better 20.Ra6!? Rab8 21.Qe4 Qc7 22.Ra7 Qd6+-) 20...Ne5 21.Qh3 (21.Qf4!? Kg8+-) 21...Nd3 22.cd3 Qb4 (22...a5 23.ba6! Ra6 24.Bc5 Qc5 25.Ra6+-) 23.Rfb1 Qd2 (23...Qe7 24.Qf3 Qd8 25.b6 ab6 26.Bf6 Qf6 27.Qf6 Rf6 28.Ra8 Kg7 29.Ra7 Kg8 30.d4+-) 24.Qe6 Kg7 25.Qe7 (25.Rc1 Qc1 26.Rc1 Rf7 27.Bf6 Kg8 28.Rc7 Raf8 29.e4 a5 30.ba6 g5 31.Rf7 Rf7 32.f4 h5 33.Qe8 Kh7 34.Qf7 Kh6 35.Bg5) 25...Rf7 26.Bf6 Kg8 27.Qe4 Qc3 (27...Rc8 28.Qe6 Qc2+-) 28.Bc3 (28.Bc3 Rb8 29.Qe5 Rf6 30.Qb8 Kg7 31.Qc7 Kh6 32.Bf6 a5 33.Qf4 Kh5 34.g4; 28.Qa8 Rf8 29.Qd5 Rf7 30.Bc3 h5 31.Ra6 h4 32.Rg6 Kf8 33.Qd8) 1-0. chessbit (1905) - Voidx (1910), Rated Rapid game, lichess.org, 2020.

5.a4 Ne7 6.d4 ed4 7.Bd4 Nf5 8.bc6 Nd4 9.cb7 Nc2 10.Qc2 Bb7 11.Bb5 Nd7 12.Nf3 Rc8 13.Bd7 Qd7 14.Qe2 Rc1 15.Kd2 Rh1 16.Qb5 Bc6 17.Qb2 0-0 18.Nd4 Rb8 19.Qc2 Bb4 20.Ke2 Re1 21.Kf3 h5 22.h3 g5 23.Nf5 d4 24.Kg3 Ba4 25.Nh6 Kf8 26.Qa4 h4 27.Kf3 Qd5 28.Kg4 Qe6 29.Nf5 Qe4 30.Kg5 Be7 31.Ne7 Qe7 32.Kf4 Qd6 33.Kf3 Qd5 34.Kg4 Qe6 35.Kh4 Reb1 36.Rb1 Rb1 37.Qd4 Qe7 38.Kg3 Qc7 39.f4 a5 40.Qh8 Ke7 41.Qh4 Kd6 42.Qf6 Kd7 43.Qf7 Kc6 44.Qc4 Kb7 45.Qe4 Qc6 46.Qb1 Kc7 47.Qh7 Kb6 48.h4 a4 49.Qb1 Qb5 50.Qb5 Kb5 51.h5 a3 52.h6 a2 53.h7 a1Q 54.Kf3 Qh1 55.Ke4 Qg2 56.Ke5 Qg7 57.Ke6 Qh7 58.f5 Qh6 59.f6 Qe3 60.Kf5 Qf3 61.Ke6 Qe4 62.Kd6 Qf4 63.Ke7 Qe5 64.Kf7 Qf5 65.Kg7 Qg5 66.Kf7 Kc5 67.Ke6 Qd5 68.Ke7 Qe5 69.Kf7 Kd6 70.Kg7 Qg5 71.Kf7 Ke5 72.Ke7 Qf6 73.Kd7 Kd5 74.Kc7 Qe6 75.Kd8 Qf7 76.Kc8 Qe7 77.Kb8 Kc6 78.Kc8 Qb7 79.Kd8 Qd7 0–1. theguy888 – goweiwen, lichess.org, 2020.

5.a4 Bf5 6.Nf3 Nd7 7.c4 Ngf6 8.Nc3 (8.d4 e4 9.c5 ef3 10.cd6 fg2 11.Bg2 Nb6+=) 8...0-0 9.Be2 (9.d4 Qa5+=) 9...Qc7 (9...dc4 10.Bc4 e4 11.Nd4+=) 10.cd5+= Nd5 (10...cd5 11.Rc1 Qb6 12.d4+=) 11.Nd5 cd5 12.Rc1 Qb8 (12...Qd8 13.0-0=) 13.Qb3 Be6 (13...Nf6 14.0-0=) 14.Ng5 Nc5 (14...Qd8 15.Ne6 fe6 16.Ba3=) 15.Qc2 (15.Rc5 Bc5 16.Qc2 Rc8 17.Qh7 Kf8 18.Ne6 fe6+–) 15...g6 (15...e4 16.Qc3 f6 17.Ne6 Ne6 18.Qb3+=) 16.Ne6 Ne6 (16...fe6 17.Be5 Be5 18.Qc5+=) 17.Qd3 (17.Qb3 Rd8+=) 17...Rd8= 18.f4 (18.Qb3 a6+=) 18...d4 (18...ef4 19.Qc3 (19.Qd5? fe3 20.Qe4 ed2 21.Kd2 Ng5–+) 19...d4 20.ed4+=) 19.fe5 (19.f5!? Nc5 20.Qc4+=) 19...Be5= 20.Qe4? (20.Rc2 Bh2 21.Kd1 Be5+=) 20...Bh2 (better is 20...de3 21.Bc3 ed2 22.Bd2 Rd2 23.Kd2 Bf4 24.Kc2 Bc1 25.Rc1 Qd6–+) 21.Qh4?? (better is 21.Kf1 Be5 22.Qh4–/+) 21…Bg3–+ (21...Bg3 22.Kf1 Bh4 23.Rh4 Qe5–+) 0–1. Gross – Stange, 1984.

5.c4 dc4 6.Bc4 Bf5 (6...Nf6 7.d4 e4 8.Qa4+=) 7.Nf3= Qb6 (better is 7...Nd7=) 8.Be5+– Be5 9.Ne5 Ne7 (9...Nh6!? 10.Qh5 Kf8+–) 10.Bf7 Kd8 11.d4 (11.Bc4 cb5 12.Nf7 Kc7 13.Nh8 bc4+/–) 11...Qb5 12.Qd2 Bb1 (12...Qb6 13.Nc3 Rf8+–) 13.Bc4 Qb6 14.Nf7 Ke8 15.0-0 Ng6 (15...Bf5 16.Nh8 Nd7+–) 16.Rfb1 Qc7 (16...Rf8 17.Rb6 ab6 18.Ng5+–) 17.Rb7! Qb7 18.Nd6 Kd7 (18...Kf8 19.Nb7 Nd7 20.Qa5+–) 19.Nb7 Kc7 (19...a5+–) 20.Qa5 Kb7 21.Be6 Re8 (21...Nd7 22.Bd7 Rab8 23.Rb1 Ka8 24.Bc6 Rb7 25.Rb7 Re8 26.Qa7) 22.Rb1 1–0. marekt – wat, ChessWorld.net, 2004.

5.c4 Be6 6.Na3 Qe7 7.Qa4 Nf6 8.b6 a6 9.Nf3 Nbd7 10.d4 Nb6 11.Qb3 dc4 12.Qb6 Ba3 13.Bc3 Rb8 14.Ne5 Bd6 15.Rb1 Be5 16.de5 Nd5 17.Bb4 Qg5 18.Qa7 Kd7 19.Bd6 Nc3 20.Rb7 Rb7 21.Qb7 Kd8 22.Qc7 Ke8 23.Qc6 Bd7 24.Qa8 Qd8 25.Qa6 Bb5 26.Qa3 Nb1 27.Qb4 Bd7 28.Qb1 Qa5 29.Bb4 Qe5 30.Bc4 Bc6 31.0-0 Qg5 32.g3 Qh5 33.Bd6 Qf3 34.Qb8 Black resigned 1–0. hamiltonharris (1905) – sadanand (1725), ChessWorld.net, 2017.

5.c4 Be6 6.Qb3 dc4 7.Bc4 Bc4 8.Qc4 Qc7 9.Nc3 Nf6 10.bc6 (10.Nf3 0-0=) 10...Qc6 (worse is 10...bc6 11.Rb1=) 11.Qc6 White begins to deal mighty blows 11...Nc6 12.Nb5 0-0-0 13.Rc1 Kb8 14.Nf3 Rhe8 15.Ng5 (15.Nd6 Rd6 16.d4 ed4 17.Rd1–/+ (17.Nd4? Nd4 18.h3 Nc6–+)) 15...Re7?? (15...Bb4 16.Bc3 Re7 17.e4+=) 16.Nd6 Rd6 17.Ba3 (17.Ba3 Kc7 18.Bd6 Kd6 19.Ke2+/–) 1–0. Imhof,A – Obernosterer,T, Lienz op, 1988.

5.c4 Be6 6.c5 Bc5 7.Be5 Nf6+=.

5.c4 Nf6 6.d4 Ne4 7.c5+=.

5.Nf3 Nd7 (--> 4.Nf3 Nd7 5.e3 c6).

5.Nf3 Bg4 6.h3 Bf3 (6...Bf3 7.Qf3 Nd7=). Saatci,Fatih – Martin,Andrew (1840), AA/C15/pr/O ICCF, 2012,

5.a4 Nf6

(---> 3.e3 c6 4.a4 Nf6 5.Bb2 Bd6).

4.e3 Bd7

5.a4 b6 6.c4 dc4 7.Bc4 Ne7 8.Nf3 Ng6 9.0-0 Bg4 10.Be2 h5 11.d4 Nd7 12.de5 Nde5 13.Ne5 Ne5 14.Bg4 hg4 15.Nc3 Qh4 16.h3 gh3 17.Nd5 hg2 0–1. A_VB (1615) – demoscy, lichess.org, 2017.

5.a4 c6 6.c4 Nf6 7.Nf3 Bg4 8.Be2 e4 9.Nd4 Be2 10.Qe2 0-0 11.0-0 Qc7 12.f4 ef3 13.Nf3 Ne4 14.Nc3 Nd7 15.cd5 Nc3 16.dc3 cb5 17.ab5 Rae8 18.c4 Bc5 19.Kh1 Re3 20.Qd2 Rfe8 21.Bd4 Re2 22.Qd3 Bd4 23.Qd4 R8e4 24.Qd3 Nc5 25.Qa3 a6 26.ba6 ba6 27.Rac1 Qf4 28.Qb4 Qg4 29.Rg1 Rg2 30.Qb8 1–0. A_VB – banifadze, lichess.org, 2017.

5.a4 Nf6 6.Nf3 c6 7.Ne5 Be5 8.Be5 Qe7 9.Bb2 cb5 10.ab5 a6 11.Be2 Bb5 12.Bb5 Kd8 13.Be2 Ne4 14.0-0 h5 15.Bh5 Rh6 16.Bg7 Rh7 17.Bd4 Nc6 18.Qg4 Kc7 19.Qf4 Nd6 20.Bf3 Rah8 21.h3 Rg8 22.Bd5 Nd4 23.Qd4 Qg5 24.Qc5 Kd7 25.Bc6 bc6 26.Qg5 Rg5 27.Ra6 Rhg7 28.Kh2 Nf5 29.Kh1 Nh4 30.g4 Nf3 31.Kg2 Ne5 32.Nc3 Rh7 33.f4 Rgg7 34.fe5 Rg8 35.Rb1 Rgh8 36.Rb7 Kc8 37.Re7 Rh3 38.Ra8 1–0. RichardSommer (1985) – gruetzie98 (1840), lichess.org, 2020.

5.c4 c6 6.a4 Nf6 7.Nc3 0-0 8.d4 ed4 9.ed4 Qe7 10.Qe2 Qd8 11.Qd3 Re8 12.Be2 dc4 13.Qc4 Be6 14.Qd3 Bb4 15.Nf3 c5 16.0-0 c4 17.Qd1 Bc3 18.Bc3 Ne4 19.Qc2 Bf5 20.Qb2 Nc3 21.Bc4 Ne4 22.Ne5 Nd6 23.Bd5 Be6 24.Bf3 Qf6 25.Rfe1 Nd7 26.Nd3 Nc4 27.Qc3 Rac8 28.Rac1 Nd6 29.Qb4 Nc4 30.d5 Bf5 31.Re8 Re8 32.Qc4 Bd3 33.Qd3 Nc5 34.Rc5 Re1 35.Qf1 Rf1 36.Kf1 Qa1 37.Ke2 Qa2 38.Ke1 Qb1 39.Bd1 Qe4 40.Be2 Qb4 0–1. Abdullaevich (1780) – Adanchess (1695), lichess.org, 2017.

5.Nf3 c6 6.Ne5 Be5 7.Be5 Nf6 8.a4 0-0 9.Bd3 cb5 10.ab5 Ne4 11.Nc3 (better 11.Qh5+/-) 11...f5? (better 11...Qg5 12.Ne4 Qe5+/-) 12.Nd5+- a6? (12...Bb5 13.Nc7 (13.Bb5?! Qd5 14.Bb8 Rfb8+=) 13...Bd3 14.cd3 Qd3 15.Na8+-) 13.b6 (better 13.Nc7 Re8 14.Bc4 (worse 14.Na8 Re5 15.Bc4 Kh8+-) 14...Kh8 15.Bg3+- (worse 15.Na8 Re5 16.d4 Rb5+-)) 13...Nc6 14.Bd6?? (better 14.Bf4+-) 14...Nd6-/+ 15.c4 (15.Nc7 Rc8 16.0-0 Ne5-+) 15...Ne5-+ 16.Qc2 (16.Bf1 f4-+) 16...Nd3 17.Qd3 Ne4 (better 17...Be6!? 18.c5 Ne4-+) 18.Nc7-/+ Rc8 19.Qd5 Kh8 20.0-0 (20.d3 Qf6 21.Qa5 Nc5-/+) 20...Qe7 (better 20...Bc6!? 21.Qd8 Rfd8-+ (21...Rcd8?! 22.d4=+)) 21.Qb7=+ Nc5 (better 21...Nd2!? 22.Rfd1 Nc4 23.Qa6 Ne5=+) 22.Qd5+= Rcd8 23.f4 (23.d4 Nb3 24.Ra2+/- (24.Ra6?! Bc8 25.Qb5 Ba6 26.Qb3 Bb7=)) 23...Bc8 24.Qe5 Qe5 25.fe5 Bb7?? (better 25...Rd2 26.Rf2 Rf2 27.Kf2 Nd3 28.Kg3 Ne5-/+) 26.d4+- Ne4 27.d5 (better 27.Ne6!? g6 28.Rfd1 Kg8+-) 27...Nd2 28.Rf4 Rf7 (28...g5 29.Rd4 Nb3+-) 29.e6 (29.Na6?! g5 30.Rd4 Nb3+-) 29...Rc7 (29...Re7 30.c5 Bd5+-) 30.bc7 Re8 (30...Rg8 31.d6 Nb3+-) 31.Rf5 (better 31.d6 Nb3 32.d7 Rg8+-) 31...g6 (31...Ne4 32.Re5 Nd6 33.c5+-) 32.Rf7 (better 32.d6!? gf5 33.d7 Rg8+-) 32...Nc4 33.e7 (33.Rd7 Kg8 34.Rd8 Kg7 35.Re8 Nd6+-) 33...Kg8 (33...Nd6 34.Rf8 Kg7 35.Re8 Ne8+-) 34.Raf1 Ne3 (34...Nd6 35.Rf8 Kg7 36.Re8 Ne8+-) 35.Rf8 Kg7 36.R1f7 (better 36.Re8 Nf5 37.Rg8 Kg8 38.e8Q Kg7+-) 36...Kh6 37.Re8 Bd5 1-0. chessbit (1920) - AlejandroDeaza23 (1940), Rated Rapid game, lichess.org, 2020.

5.Nf3 Qe7 6.c4 Nf6 7.Be2 0-0 8.d3 e4 9.de4 de4 10.Nd4 a6 11.a4 ab5 12.ab5 Bb4 13.Nd2 Ra1 14.Ba1 c6 15.Nc2 Rd8 16.Nb4 Qb4 17.Qb3 Qb3 18.Nb3 cb5 19.cb5 b6 20.0-0 Nd5 21.Rc1 Rc8 22.Rc8 Bc8 23.Bc4 Be6 24.Nd4 Nc7 25.Ne6 Ne6 26.Be6 fe6 27.Be5 Nd7 28.Bc7 Kf7 29.Kf1 e5 30.Ke2 Ke6 31.f3 Kd5 32.Bd8 Kc5 33.f4 ef4 34.ef4 Kb5 35.Ke3 Nc5 36.Kd4 Kc6 37.g4 Ne6 38.Ke4 Nd8 39.f5 b5 40.g5 Nf7 41.h4 g6 42.fg6 hg6 43.Kd3 Kd5 44.Kc3 Kc5 45.Kd3 b4 46.Kc2 Kc4 47.Kb2 Ne5 0-1. banjoband (2055) - nestorzgz (2125), Rated Blitz game, lichess.org, 2014.

5.Nf3 f6 6.c4 c6 7.a4 (7.bc6 Bc6 8.Nc3 dc4 9.Bc4 Nd7=) 7...Ne7+= 8.Be2 a6 9.0-0 0-0 (9...e4 10.Nh4+=) 10.d4 e4 11.Nfd2 f5?? (better is 11...ab5 12.ab5 Ra1 13.Ba1 Qa5=) 12.c5+– Bc7 13.b6 Bb6 14.cb6 Qb6 15.Ba3 Rf7 16.f4 ef3 17.Nf3 (17.gf3?! f4 18.Bc5 Qd8+/–) 17...Ng6 18.Bd6 f4 (18...Qd8 19.Ne5 Ne5 20.Be5+–) 19.Ne5 Ne5 20.Be5 (20.de5?! Qe3 21.Kh1 Be6+–) 20...fe3 21.Rf7 Kf7 22.Ra3 (22.Bh5 Kg8 23.Qf3 Be6+–) 22...c5 23.dc5 Qc5 24.Bd4 (better is 24.Rc3!? Qe7 25.Qd5 Be6 26.Qf3 Kg8+–) 24...Qd6 25.Re3 Nc6 26.Nc3 Kg8 (26...Be6 27.Rg3 g6 28.Rf3 Kg8 29.Bf2+–) 27.Rg3 (better is 27.Bf3 Kh8 28.Nd5 Nd4 29.Qd4 Bc6+–) 27...Nd4? (27...g6+–) 28.Qd4 g6 (28...Qh6 29.Qd5 Be6 30.Qb7 Rf8+–) 29.Qd5 (better is 29.Nd5 Re8 30.Nf6 Qf6 31.Qf6 (31.Qd7 Re2 32.Qc8 Kg7 33.Qb7 Re7+=) 31...Re2 32.Rf3+–) 29...Qd5 30.Nd5 Ba4 31.Nb6 Re8 32.Bc4 Kg7 33.Na4 b5 34.Bf1 ba4 35.Ra3 Re4 (35...a5 36.Ra4 Re5 37.Kf2+–) 36.Ba6 g5 (36...Rb4 37.Kf2 h5 38.Be2+–) 37.Bb5 h5 38.Ra4 Ra4 39.Ba4 Kf6 40.Kf2 Kf5 41.Bd1 g4 (41...h4 42.g4 hg3 43.hg3+–) 42.g3 (42.Kg3!? Kg5+–) 42...h4 43.Ke3 Kg5 44.Ke4 (44.Ke4 hg3 45.hg3+–) 1–0. Otte,Marco (1735) – Mottart,F, Gent, 2002.

4.e3 Be6

5.a4 Ne7 6.Nf3 Ng6 7.d3 0-0 8.Be2 c6 9.c4 Nd7 10.0-0 f5 11.Qb3 e4 (11...f4 12.Nc3=+) 12.de4 (12.Qc3 Qf6 13.Nd4 Be5 14.cd5 cd5=) 12...fe4=+ 13.Nfd2 (13.Nd4 Nc5 14.Qc3 Qg5=+) 13...Qh4 14.f4 ef3 15.Nf3 Rf3! (15...dc4?! 16.Qc3 Qh6 17.Bc4=) 16.Rf3 (16.Bf3 Bh2 Mate attack; 16.Rf3 Bh2 Double attack (16...Nde5 Decoy); 16.gf3 Qh2 Mate attack) 16...Bh2 17.Kf1 Nde5 (17...Nc5!? 18.Qc2 Bg3 19.Rg3 Qh1 20.Kf2 Ne4 21.Qe4 de4 22.Ba3-+) 18.Qc3 (18.bc6 Bg3 19.Rg3 Qg3 20.Be5 Rf8 21.Bf3 Ne5 22.Nd2 bc6 23.Qc3-+) 18...dc4 19.Nd2 Bd5?? (better 19...Bg3!? 20.Rg3 Qg3-+) 20.e4 (20.Rh3 Qf6 21.Nf3 Nf3 22.Qf6 gf6 23.gf3 Be5 24.Be5 Ne5=+) 20...Be6 (20...Bf4 21.Bc4 Bd2 22.Bd5 cd5 23.Qd2 Qh1 24.Ke2 Qg2 25.Rf2 Qe4 26.Kd1-+) 21.g3 (21.Bc4!? Bc4 22.Nc4 Qe4 23.Rc1 Qc4 24.Qc4 Nc4 25.Rc4 cb5 26.Rb4=) 21...Qh3 22.Ke1? (better 22.Kf2 cb5 23.ab5=+) 22...Nf3-+ 23.Qf3 (23.Nf3 Qg3 24.Kd1 Rd8 25.Kc2 Nf4 26.Bc4 Kh8 27.Qg7 Qg7 28.Bg7 Kg7 29.Be6 Ne6 30.Nh2 cb5 31.ab5 Nd4 32.Kc3 Nb5 33.Kc4 a6-+) 23...Qg3 24.Qg3 Bg3 25.Kd1 Rd8 26.Kc2 (26.bc6 bc6 27.Kc2 Nf4 28.Bc4 Rd2 29.Kd2 Bc4-+) 26...Nf4 27.Bc4 Rd2! 28.Kd2 Bc4 29.bc6 bc6 30.Be5 Nh5 31.Bg3 Ng3 32.Ke3 Bf7 33.Rc1 Be8 34.a5 (34.Rc5-+) 34...h5 35.Kf4 (35.Rb1 Bg6 36.Rb8 Kf7 37.e5-+) 35...Kh7 (better 35...Ne2 36.Kf5 Nc1-+) 36.Kg3+= g5 37.Rd1 Kg6 (37...a6 38.Kf3+=) 38.Rd6 Kg7 (38...Kf7 39.Rd8 a6 40.Ra8+/-) 39.Rd8+/- Bf7 (39...Bg6!? 40.Kf3 a6+/-) 40.Rd7 (40.Rd7 a6 41.Rc7+/-) 1-0. Antares_Sco (1945) - mlrau7 (1940), Hourly SuperBlitz Arena, lichess.org, 2016.

5.a4 Nf6 6.Nf3 Nbd7 7.Be2 0-0 8.0-0 c5 9.d3 Qc7 10.Ng5 Bf5 11.f4 (11.f3!?=+) 11...ef4–/+ 12.ef4 (12.Nc3 Be6 13.e4 d4–+) 12...Bf4–+ 13.Nf3? (better is 13.g3 Be3 14.Kg2 Bd3 15.Qd3 Bg5 16.Rf5–+) 13...Ne5 0–1. Anderson,George – Khedkar,Jay S (1935), Winnipeg Icebreaker op, 2003.

5.d3 Nf6 6.Nf3 Nbd7 7.Be2 0-0 8.Nbd2 c6 9.a4 (9.bc6 bc6 10.0-0 Qc7=+) 9...c5 (9...Qb6!?–/+) 10.0-0 h6 11.c4 (11.e4 d4=) 11...d4 (11...e4 12.Ne1 Qc7 13.Kh1=+) 12.e4 (12.Qb3 Qc7=) 12...Nh7 (12...a6 13.Re1=+) 13.a5 Qc7 (13...a6 14.Qb3=) 14.Qb3 (14.a6 b6=) 14...Rae8 15.Nh4 g6 (15...Ng5 16.Qc2=) 16.Bc1 (16.Nhf3 Be7+=) 16...Kg7 (16...Be7 17.Nhf3=) 17.Ndf3 (17.Nhf3 Be7=) 17...f5= 18.b6 (18.Bd2!?=) 18...ab6=+ 19.ab6 Qc6 20.ef5 (20.Rd1 fe4 21.de4 g5 22.Nf5 Bf5 23.ef5 e4–/+) 20...gf5 21.Qd1 e4–/+ 22.Ne1 Rf6 23.Bh5 Ref8 24.de4? fe4–+ 25.g3?! Ne5 26.Bf4 Nc4 27.Bd6 Qd6 28.Neg2 Ng5 29.Ra7 Qb6 30.Ra4 Nh3 31.Kh1 Rf2 32.Re1 Nb2 33.Qa1 Qb5 34.Nf4 Bd7 35.Ra5 Qc6 36.Qa3 e3 37.Nhg2 R8f4 (38.Bf3 Qf3 39.Rg1 Ng1 40.gf4 Qg2; 37...Qg2 38.Ng2 Rf1 39.Rf1 Rf1) 0–1. tschulz – Papale, grosses Mannschaftsturnier, 2005.

5.d4 e4 6.Ne2 f6 7.Ng3 Ne7 8.Nd2 0-0 9.c4 dc4 10.Bc4 Qd7 11.0-0 f5 12.a4 Nd5 13.Qb3 c6 14.Bd5 cd5 15.Rac1 Qf7 16.Qd1 g6 17.Nb3 Nd7 18.Nc5 b6 19.Ne6 Qe6 20.Qe2 Rac8 21.Rc8 Rc8 22.Rc1 Nf6 23.Qd2 Qd7 24.Ne2 g5 25.Rc8 Qc8 26.Qc1 Qc1 27.Bc1 Bb4 28.f4 g4 29.g3 h5 30.Bb2 Kf7 31.Bc3 Be7 32.a5 Nd7 33.ab6 ab6 34.Bb2 Nf8 35.Nc3 Ke6 36.Bc1 Bb4 37.Bd2 Ba3 38.Na4 Nd7 39.Kg2 Be7 40.h3 Bd8 41.hg4 hg4 42.Bb4 Kf7 43.Bd6 Ke6 44.Be5 Nf8 45.Bb8 Nd7 46.Kf2 Nb8 47.Ke2 Kd6 48.Kd2 Kc7 49.Kc3 Be7 50.Kb3 Nd7 51.Kc3 Nf6 52.Kb3 Ne8 53.Kc3 Nd6 54.Kb3 Nb5 55.Kc2 Na7 56.Kd2 b5 57.Nc3 Kc6 58.Ke2 b4 59.Na4 Kb5 60.Nb2 Nc6 61.Kd1 Na5 62.Kc2 Bd6 63.Nd1 b3 64.Kb2 Bb4 65.Nc3 Bc3 66.Kc3 b2 67.Kb2 Kc4 68.Kc2 Nb3 69.Kd1 Kd3 70.Ke1 Ke3 71.Kf1 1–0. A_VB – Bluemoon1, lichess.org, 2018.

5.Nf3 Nd7 6.Nc3 Ngf6=+.

5.Nf3 Nd7 6.d3 Qf6 7.c4 dc4 8.dc4 Qg6 9.Nbd2 Ngf6 10.Rc1 e4 11.Nd4 Nc5 12.Ne6 fe6 13.Bf6 (13.Bd4!?=) 13...gf6–/+ 14.g3 0-0-0 15.Be2 h5 16.Qc2 f5 17.Qc3 h4 18.Rf1 hg3 19.hg3 Bg3 (19...Rh2 20.Rg1–/+) 20.fg3–+ Qg3 21.Kd1 Rh2 22.Re1 Nd3 (22...Nd3 23.Bd3 Rd3–+ (23...ed3?! 24.Rb1–+)) 0–1. Louro,Eugenio Diogo (2190) – Dalar,Ali Riza, WS/M/061 ICCF, 2006.

5.Nf3 Nd7 6.d4 e4 7.Nfd2 f5 (7...Qg5 8.c4+=) 8.g3 (8.c4 Ngf6 9.Nc3 0-0=) 8...Ngf6 (8...Ne7 9.c4 c5 10.dc5+=) 9.c4 0-0 (9...c5 10.bc6 bc6 11.Nc3+=) 10.Nc3 (10.c5 Be7+=) 10...dc4 11.Bc4 Bc4 (11...Qe7 12.Qb3 Rfe8 13.Be6 Qe6 14.0-0+=) 12.Nc4 Nb6 13.Qb3 Nc4 14.Qc4 Kh8 15.a4 Qe8 16.Ba3 Ba3 (16...Qh5 17.h4+=) 17.Ra3= Qh5 18.Qe2 (18.h4 Ng4=) 18...Qh3 19.Qf1 Qh5 (19...Qh6 20.Qe2+=) 20.Qe2= Qh3 21.Qf1 Qh5 (21...Qh6 22.Qc4+=) 22.h3 (22.Qe2 Qh6=) 22...Rac8 (22...Qf3 23.a5+=) 23.Qe2 Qf7 24.Qa2 Qd7 25.Ne2 (25.Qb2 c5 26.bc6 Rc6+=) 25...Nd5 (25...c5 26.0-0+=) 26.0-0 Rf6 (26...c5 27.dc5 Rc5 28.Rd1=) 27.Kg2 (27.Nc3!? Nb4 28.Qc4=) 27...Rh6–/+ 28.Nf4 Nf4 29.ef4 Qd4 30.Qc2 (30.Rc1 Qd7+=) 30...Rd6 (30...Qd7 31.Rc1 Rd6 32.Qc5–/+) 31.Rc3 c5 (31...Rd7 32.Re1–/+) 32.bc6+= Rdc6 (32...Rcc6 33.Rc6 bc6 34.Rb1+=) 33.Rc6 Rc6 (worse is 33...bc6 34.Rd1 Qf6 35.Rd7+=) 34.Rd1 (34.Qb3 Rc7+=) 34...Rc2 35.Rd4 h6 (35...h5 36.Kf1+=) 36.Kf1 Rc7 (36...Rc3 37.Rd7 Rb3 38.g4+=) 37.g4 g6 38.Rd5 (38.gf5 gf5 39.Rd5 Rf7+=) 38...Rf7 39.gf5 gf5 (39...Rf5 40.Rd7+=) 40.Ke2 (40.f3 Kg7+=) 40...Kg7 (40...Kh7 41.f3+=) 41.Ke3 (41.a5 Kh7+=) 41...Kg6 (41...h5 42.a5+=) 42.a5 (42.f3 Re7+=) 42...Rf6 (42...h5 43.f3+=) 43.f3 ef3 44.Kf3 b6 (44...a6 45.Kg3+=) 45.Kg3= Rc6 (45...Kh5 46.Re5=) 46.Kh4 Kf6 (46...ba5 47.Ra5 a6 48.Rd5=) 47.Rd7 a6 48.ab6 Rb6 49.Kh5 Ke6 50.Ra7 Kd5 51.h4 ½–½. Schulze,Harald (2115) – Fischer,Franz (2025), Bayern Landesliga Nord, 1998.

5.Nf3 Nd7 6.Be2 f6 7.a4 Ne7 8.Na3 0-0 9.c4 c6 10.cd5 cd5 11.d4 Qa5 12.Nd2 Bb4 (12...Nb6 13.Nab1–/+) 13.Nab1 Rac8 14.0-0 Bf5 15.Nb3 Qb6 16.Bd3 Qe6 17.de5 fe5 (worse is 17...Ne5 18.Nd4 Qd7 19.Bf5 Nf5 20.Nf5 Qf5 21.Qd5 Rf7 22.Bd4+/–) 18.Na3 Bc3 19.Bf5 Qf5 20.Bc3 Rc3 21.Nc1 Rfc8 22.Ne2 Rd3 23.Qb1 Rd2 24.Qf5 Nf5 25.Rfe1 Nd6 26.Kf1 Kf7 27.Rab1 Ne4 28.Rb3 (better is 28.Rbd1!?–/+) 28...Ndc5–+ 29.Rbb1 Na4 (29...Nd3 30.Red1 Rd1 31.Rd1 Ndf2 32.Rc1 Rc1 33.Nc1–+) 30.f3 Nd6 31.Rb4 Nc3?? (31...Nc5 32.Nb1 Rc2 33.Rd1–+) 32.Nc4?? (better is 32.Nc3 Rc3 33.Nb1=) 32...Rc4 33.Rc4 Nc4 34.Nc3 Rd3 (better is 34...a6!?–+) 35.Rc1–/+ Ke6 36.e4 d4 37.Na4 Ne3 38.Ke2 Ra3 39.Nc5 Ke7 40.g4 Ra2 41.Kd3 Ra3 42.Kd2?? (42.Ke2 Ra5 43.Nb7 Rb5 44.Rc7 Kf6–+) 42...Ra2 43.Kd3 Rb2 44.Nb7 Rb5 (44...Rb3 45.Ke2 Rb5 46.Rc7 Kf6 47.Nd6 Rb2 48.Kd3 Rh2 49.f4 ef4 50.Ne8 Ke6 51.Ng7 Ke5 52.Re7 Kf6 53.Ra7–+) 45.Rc7 Kf6 46.Nd6 Rb3 47.Kd2 Rb8 48.Ra7 h6 (48...Nf1!? 49.Ke2 Nh2–/+) 49.h4+= Rd8 (49...g6 50.Nf7+=) 50.Nf7 Rb8 51.g5 (51.Nd6!?=) 51...hg5+= 52.hg5 Ke6 53.g6 Rb2 54.Kc1 Rc2 (54...Rb6 55.Rc7 Kf6 56.Kd2+=) 55.Kb1= Rc5 56.Ra6 Kd7 57.Ng5 d3 58.Nf7 (58.Ra3!? d2 59.Rd3 Ke7 60.Rd2=) 58...Nc4+= 59.Kc1 Rb5 60.Ra1 (60.Ra7 Kc6 61.Nd8 Kd6 62.Nf7 Kc5+=) 60...Kc7 (better is 60...Rb6 61.Ra7 Kc6 62.Nd8 Kc5–+) 61.Kd1?? (61.Ra7 Kb6 62.Rd7 Rb3–/+) 61...Kb6 (better is 61...Rb2 62.Ne5 Ne5 63.Rc1 Kd6–+) 62.Rc1+= Rb4 63.Rc4 Rc4 64.Ne5 Rd4 65.Kd2 Kb5 66.Kd1? (66.Ng4 Rd6=) 66...Ka4 (better is 66...d2–+) 67.Kd2+= Kb3 68.Nc6 (68.Nd3?? Kc4–+) 68...Rd6 69.Ne5 Kb4 70.f4 (70.Nd3?? Kc4–+) 70...Kc5 71.f5 (better is 71.Nf7!? Rf6 72.Kd3 Rf4 73.Ke3–/+) 71...Kd4–/+ 72.Nf7?? (72.Ng4 Ra6 73.f6 Ra2 74.Ke1 gf6 75.g7–/+) 72...Ra6–+ 73.Ng5 (73.Ne5 Ra2 74.Kd1 Ke5 75.f6 Ke4 76.f7–+) 73...Ra2 74.Kd1 (74.Ke1 Ke3 75.Kf1 Rf2 76.Ke1 d2 77.Kd1 Kd3 78.Nf3 Rf1 79.Ne1 de1Q) 74...Ke3 (74...Ke3 75.Kc1 d2 76.Kb1 Ra7 77.Kc2 Rc7 78.Kb2 d1Q 79.Ka3 Rb7 80.f6 Qb3) 0–1. Leon Manas,Jose Francisco (1695) – Gonzalez Intelangelo (2060), 4th Pedro Montalvo Mem, 2011.

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

5.f4 f6 6.fe5 fe5 7.Nf3 Nd7 8.c4 Bg4 (8...Ngf6 9.c5 Bc5 10.Ne5–/+) 9.h3 Bh5 10.g4 Bg6 11.cd5 e4 12.Nd4 Qh4 (13.Ke2 Be5+=). Gottwald,Bernhard (2040) – Pirs,Matjaz (2460), RSS7E adv–22, 2005.

4.e3 Qe7

5.c4 c6 6.a4 Nf6 7.Nf3 Nbd7 (7...e4 8.Nd4=+) 8.Be2 dc4 9.Bc4 (9.bc6 bc6 10.Na3 e4=+) 9...cb5 10.ab5 0-0 11.d3 Nb6 12.Bb3 Bg4 13.0-0 e4 (13...Rfd8 14.Nbd2=+) 14.de4= Ne4 15.Nbd2 (15.h3!? Be6 16.Qd4=) 15...Nd2-/+ 16.Qd2 Bf3 17.gf3 Rad8 (17...Rfd8!? 18.Qc3 Qg5 19.Kh1 Rac8=+) 18.Qc3= Qg5 (18...Bh2 19.Kh1 Qg5 20.Qg7 (worse 20.Ra7 Bb8 21.Qg7 Qg7 22.Bg7 Kg7 23.Rb7 Nd7=+) 20...Qg7 21.Bg7 Kg7 22.Kh2=) 19.Kh1 Qh6 (better 19...Bh2!? 20.f4 Qh6 21.Qg7 Qg7 22.Bg7 Kg7 23.Kh2 Nc8=) 20.Rg1?? (better 20.f4 Rc8 21.Qd4+/-) 20…Qh2 0-1. banjoband (2020) - flogislife2 (1910), Rated Blitz game, lichess.org, 2014.

5.c4 Nf6 (--> 4.e3 Nf6 5.c4 Qe7).

5.d4 e4 6.Ba3?? (better is 6.c4 dc4 7.Bc4+=) 6...Ba3–+ 7.Nd2 (7.Na3 Qa3 8.Qd2 Nf6–+) 7...Nf6 8.Qb1 (8.c4 0-0–+) 8...Bb4 9.Qc1 (9.Qb3 0-0–+) 9...0-0 (9...Bc3 10.Rb1–+) 10.c3 Bd6 11.a4 (11.c4 c5–+) 11...Ng4 (11...Be6 12.c4 Bb4 13.c5–+) 12.g3 (12.c4 Qh4 (12...Nh2?! 13.c5–+) 13.g3 Qf6–+) 12...Qf6 13.Nh3 Be6 (13...c5 14.dc5 Bc5 15.c4–+) 14.Bg2 (14.c4 Bb4–+) 14...Qh6 (14...c5 15.0-0 Qh6 16.dc5 Bc5 17.Nb3–+) 15.Nf1 (15.Nf4 Bf4 (15...Nh2?! 16.Nf1–+) 16.ef4 e3 (16...Nh2?! 17.Nf1–/+) 17.fe3 Ne3–+) 15...Nd7 (15...c5 16.Nf4–+) 16.Ng1 (16.Nf4 Qf6–+) 16...c5 (16...a6 17.f3 ef3 18.Bf3–+) 17.bc6 bc6 18.h3 Ngf6 19.Ne2 c5 20.Nf4 cd4 (20...Bf5 21.Qd2–+) 21.cd4 Rfc8 (21...Rab8 22.Ra2–+) 22.Qd1 Bb4 (22...Rab8 23.Ne6 fe6 24.Nd2–+) 23.Nd2 Nb6 24.0-0 (24.Rb1 Ba5 25.0-0 Bd7–+) 24...a5 (24...Bc3 25.Ra2–+) 25.Kh2 (25.Ne6 fe6 26.Rc1 Qg6–+) 25...Bd7 26.Nb1 Rc4 (26...Rc4 27.f3 ef3 28.Bf3 Rac8–+; 26...Nc4 27.Qb3–+) 0–1. Wisniewski,Jan – Sternik,Ryszard, corr 2AMM Poland, 1993.

5.Nf3 (--> 4.Nf3 Qe7 5.e3).

4.e3 Ne7

5.c4 Be6 6.Nf3 f6 (6...Nd7 7.Nc3+=) 7.cd5 (7.d4 dc4 8.Nbd2 Bb4=) 7...Nd5+= 8.Bc4? (better is 8.Nc3!?+=) 8...Ne3!–/+ 9.fe3 (9.de3 Bc4 Discovered attack; 9.fe3 Bc4 Discovered attack) 9...Bc4 10.Qa4 Be6 11.0-0 0-0 12.Nc3 Nd7 13.d4 Nb6 14.Qc2 Nc4 15.Bc1 (15.Qe2 ed4 16.Nd4 Qd7–+) 15...ed4 16.ed4 (16.Nd4 Bf7–+) 16...Rc8 (16...Re8 17.Qd3–+) 17.Qb3 (17.Re1 Bf7–+) 17...Bf7 18.d5 Nb6 19.Be3 (19.Ba3 Re8 20.Rfe1 Ba3 21.Qa3 Nd5–+) 19...c6 20.Kh1 (20.bc6 bc6 21.Rad1 Nd5 22.Nd5 Bd5–+) 20...Nd5 (20...cd5 21.Bd4–+) 21.Nd5 Bd5 22.Qa4 (22.Qd3 Qa5–+) 22...cb5 23.Qb5 Bc6 (better is 23...Bc4 24.Qb7 Rf7–+) 24.Qb3 Kh8 25.Ba7 (25.Rad1 Re8–+) 25...Ra8 26.Bb6 Bc7 (26...Qe8 27.Qb2–+) 27.Rad1 Qc8 (worse is 27...Bb6 28.Rd8 Bd8 29.Ng5+=) 28.Bc5 (28.Bc7 Qc7 29.Rd3 Qa5–+) 28...Ba4 (better is 28...Re8 29.Qb2 Rd8–+) 29.Qc4? (29.Qb1!? Re8 30.Rd4 Re2–+) 29...Bd1 (better is 29...b5!? 30.Qb4 Bd1 31.Rd1–+) 30.Bf8 Bf3 (30...Qf8?! 31.Rd1 Rd8 32.Rd8 Qd8 33.g3–/+) 31.Bg7?? (better is 31.gf3 Qd7 32.Rc1 Bh2 33.Kh2 Rf8 34.Kg3–+) 31...Kg7 32.gf3 (32.Rf3 Be5 33.Qc8 Rc8–+) 32...Bb6 (32...Qd7 33.Qe2–+) 33.Qb4 (33.Qc8 Rc8 34.Rb1 Rc6–+) 33...Qc5 (33...Bc5 34.Qb3–+) 34.Qg4 (34.Rb1 Qc6 35.Qe4 Qc7–+) 34...Kf8 (34...Kh8!? 35.Qf4 Qc3 36.Qc1–+) 35.Qf4 (35.Qh4 Qe7–+ (35...Ra2? 36.Qf6 Kg8 37.Qe6 Kg7 38.Qa2+–)) 35...Qe7 (35...Ra2? 36.Qf6 Kg8 37.Qe6 Kf8 38.Qa2+–) 36.Rb1 (36.a4 Be3 37.Qg4 Rd8–+) 36...Ra2 37.Qh6 (37.Rc1–+) 37...Ke8 (better is 37...Kg8 38.Qh3 Bc7 39.Rg1 Kh8 40.Qc8 Qd8 41.Qd8 Bd8 42.h4–+) 38.Qh4?? (better is 38.Qh5 Qf7 39.Qb5 Kf8 40.Qb6=) 38...Bd8 (38...Bc7!? 39.Qe4–+) 39.Re1 (39.Qh5 Qf7 40.Qb5 Kf8 41.Qb7 Qb7 42.Rb7 Be7–+) 39...Re2 40.Qh5 Kf8 41.Qh6 (41.Rg1 Bb6 42.Qh6 Ke8 43.Qh5 Kd8 44.Rd1 Kc7–+) 41...Kg8 42.Rg1 Kh8 43.Qh4 (43.Qh3 Bb6 44.Qc8 Qd8 45.Qd8 Bd8–+) 43...Bb6 (43...Bc7 44.Rg2 Rg2 45.Kg2 Qe2 46.Qf2 Qf2 47.Kf2 Bh2 48.Kf1–+) 44.Rc1 (44.Ra1 Qe5 45.Ra8 Kg7 46.Qg4 Qg5–+) 44...Bc7 45.Rg1 (45.Rc7 Qc7 46.Qf6 Kg8 47.Qg5 Kf8 48.Qf6 Qf7 49.Qd6 Kg7 50.Qd4 Qf6 51.Qd7 Kh6 52.Qh3 Kg6 53.Qg3 Qg5 54.Kg1–+) 45...Rh2 (45...Rh2 46.Qh2 Bh2 47.Kh2 b5–+) 0–1. Nikolic,Jovane (1710) – Chiaretti,Flavio Mario, Championship da Primeira Categoria do E, 2013.

5.Nf3 Nd7 (--> 4.Nf3 Nd7 5.e3 Ne7).

5.Nf3 e4 6.Nd4 0-0 7.Be2 c5 8.bc6 Nbc6 9.0-0 Nd4 10.Bd4 Nc6 11.Bb2 Qh4 12.g3 Qg5 13.c4 Bh3 14.Re1 Rac8 15.Bf1 Bf1 16.Rf1 Rfd8 17.h4 Qf5 18.Kg2 Na5 19.cd5 Qd5 20.a4 Nb3 0–1. cmulligan (2085) – cliff (2720), net–chess.com, 2014.

5.Nf3 f6 6.c4 c6 7.a4 0-0 8.Be2 Be6 9.d3 Nd7 10.Nbd2 h6 (10...a6 11.bc6 Nc6 12.0-0=+) 11.Qc2 (11.0-0 Rc8=) 11...f5 12.Rc1 Rc8 13.e4 (13.0-0 f4 14.bc6 Rc6=) 13...fe4=+ 14.de4 d4 15.Nb3 cb5 16.ab5 Ng6 17.0-0 Nf4 18.Qd2 (better 18.Rfd1-/+) 18...Bg4 (18...Qf6 19.Qd1-+) 19.c5? (better 19.Nfd4 Bh3 20.gh3 Qg5 21.Bg4 Nh3 22.Kh1 Qg4 23.f3=) 19...Ne2 20.Qe2 Nc5 (20...Bf3 21.gf3 Nc5 22.Nc5 Bc5 23.Rfd1-+) 21.Nc5? (better 21.Rc5 Bc5 22.Qc4 Kh7 23.Ne5-/+) 21...Bc5?? (21...Bf3 22.gf3 Bc5-+ (22...Rc5?! 23.Rc5 Qg5 24.Kh1 Bc5 25.Qc4 Kh7 26.Qc5=+)) 22.Qc4+/- Kh7 23.Ne5 Ba3 24.Qc8 (better 24.Qb3 Bb2 25.Qb2 Rc1 26.Rc1+= (worse 26.Qc1 Be2-/+)) 24...Bc8-/+ 25.Ba3 Re8 (better 25...Rf4 26.f3 Qg5=+) 26.Nd3? (better 26.Nc4 Bd7 27.Nd6=+) 26...Re4-+ 27.Bc5? (27.Rfd1-+) 27...b6 28.Bb4 Bd7 29.Rfd1 Bb5 30.g3 (30.f3 Re8-+) 30...Bd3 (30...Qf6 31.f4-+) 31.Rd3 a5 32.Ba3 (32.Bd2 Qd5-+) 32...Re2 33.Kg2 (33.Kf1 Qe8 34.Rcd1 Qe4-+) 33...Qf6 (better 33...Qd5 34.Rf3 Rd2 35.Rc8-+) 34.Rf3 Qe6 (34...Qe5 35.Bf8-+) 35.Rd1 (35.Rc7 Qd5 36.Bf8 Re6 37.Rg7 Kh8-+) 35...Qa2 (better 35...Qe4 36.Rdd3-+) 36.Rd4 b5 37.Rd7 (37.Bf8 Qe6-+) 37...b4 38.Bc1 b3 (38...Qc2 39.Rff7 Rf2 40.Rf2 Qc6 41.Kf1 Qd7 42.Ke1-+) 39.Be3 (39.Rff7 b2 40.Rg7 Kh8 41.Bb2 Rb2-+) 39...Re3! 40.Re3 b2 41.Ree7 (41.Rd1-+) 41...b1Q 42.Rg7 Kh8 43.Rh7 (43.Rge7 Qg8 44.Rd2 Qa8 45.f3 Qf5-+) 43...Qh7 44.Rh7 (44.Rd8 Qhg8! 45.Rg8 Qg8 46.f3-+) 44...Kh7 45.h4 Qd5 46.Kh3 a4 47.g4 (47.f3 a3 48.Kh2 a2 49.Kg2 a1Q 50.g4 Qda2 51.Kh3 Qh1 52.Kg3 Qhh2) 47...a3 (47...Qf3 48.Kh2 a3 49.g5 a2 50.g6 Kg8 51.g7 a1Q 52.h5 Qah1) 48.g5 (48.Kh2 a2 49.Kg3 a1Q 50.g5 Qg1 51.Kf4 hg5 52.hg5 Qgg5) 48...a2 (48...Qf3 49.Kh2 a2 50.g6 Kg8 51.g7 a1Q 52.h5 Qah1) 49.g6 (49.Kg3 a1Q 50.Kf4 Qae5 51.Kg4 Qg2 52.Kh5 Qf3) 49...Kg6 50.h5 (50.Kh2 a1Q 51.h5 Qh5 52.Kg3 Qah1 53.f4 Q1f3) 50...Kg5 (50...Qh5 51.Kg3 a1Q 52.f3 Qe1 53.Kf4 Qf5) 51.Kg3 Qe5 (51...Qd3 52.f3 a1Q 53.Kh2 Kh4 54.f4 Qe2) 52.Kf3 (52.Kh3 a1Q 53.Kg2 Qe4 54.f3 Qb2 55.Kg3 Qh4) 52...Qf4 53.Ke2 a1Q 54.Kd3 (54.f3 Qb2 55.Kd3 Qbd2) 54...Qa6 (54...Qd1 55.Kc3 Qfd4) 55.Kc2 Qac4 56.Kd1 Qf3 (56...Qfc1) 57.Kd2 Qf2 (57...Qcc3) 58.Kd1 Qcf1 (58...Qfe2) 0-1. banjoband (2075) - itsmagic (2070), Rated Blitz game, lichess.org, 2014.

5.Nf3 f6 6.c4 c6 7.a4 a5 8.Nc3 0-0 9.Be2 e4 10.Nd4 Nd7 11.0-0 Ne5 12.f4 ef3 13.Nf3 Be6 14.cd5 Nd5 15.Nd5 Bd5 16.Ne5 Be5 17.Be5 fe5 18.Bf3 e4 19.Be2 Qe7 20.Qc2 c5 21.Bc4 Rf1 22.Rf1 Qd6 23.Rf4 Re8 24.Re4 Re4 25.Qe4 Bc4 26.Qc4 Kh8 27.Qf4 Qd8 28.d4 c4 29.Qf7 Qc8 30.Qf2 c3 31.Qc2 Qc4 32.Kf2 h6 33.d5 Qd5 34.Qc3 Qa2 35.Kf3 Qa4 36.Qc8 Kh7 37.Qb7 Qb4 38.Qe4 Qe4 39.Ke4 a4 40.b6 a3 41.b7 a2 42.b8Q a1Q 43.Qb3 Qg1 44.Kf3 Qh2 45.Qd3 Time forfeit 1–0. RichardSommer (2175) – Duki2405 (2180), lichess.org, 2020.

5.Nf3 f6 6.c4 Be6 7.d4 dc4+=.

5.Nf3 f6 6.d4 e4 (6...0-0 7.de5 fe5 8.Ne5=) 7.Nfd2= 0-0 8.Be2 (8.c4 c6+=) 8...c6 9.bc6 Nbc6 10.c4 Bf5 (10...Nb4 11.Nc3 f5 12.0-0+=) 11.Nc3 Bb4 (11...Nb4 12.cd5 Rc8 13.0-0 Ned5 14.Nde4+/–) 12.a3+= Ba5 13.Qb3 Bc3 (13...Be6 14.0-0+= (14.Qb7?? Rb8 15.Qb8 Qb8–+)) 14.Bc3+/– Rb8 15.0-0 Bg6 16.Bb4 (16.Rac1 Bf7+/–) 16...Nb4 (16...Bf7!?+=) 17.ab4+/– (17.Qb4?! Qd7+=) 17...a6 18.cd5 Nd5 (18...Qd5?? 19.Bc4 Bf7 20.Bd5 Bd5 21.Qb1+–) 19.Bc4 Bf7 20.Ne4 b5 21.Bd5 Bd5 22.Qc2 Bc4 23.Rfe1 Rb6 24.Nc5 Qc8 (24...Qd6+–) 25.d5 (better is 25.e4!?+–) 25...Bd5+/– 26.Red1 Bc6 (26...Be6!?+/–) 27.Qa2+– Kh8 28.Qe6 (28.f3 Rd8+–) 28...Qe6+/– 29.Ne6 Re8 (29...Rc8 30.Nc5+/–) 30.Nc7+– Rc8 31.Ra6 Ra6 32.Na6 h6 33.Nc5 Rc7 34.e4 Kh7 35.Ra1 Kg6 36.f3 Kf7 37.g4 Kg6 38.h4 h5 (38...Kf7!?+–) 39.Ne6 Re7 40.Nf4 Kh6 (40...Kf7 41.Nh5 g5 42.Rc1+–) 41.Ra6 Be4 42.g5 (42.fe4?! Re4 43.g5 Kh7+=) 42...Kh7 43.gf6 (43.fe4?! Re4 44.Nd5 Rg4 45.Kf2 fg5 46.hg5 Rg5+/–) 43...gf6 ½–½. Tiedemann,Joern (2020) – Gottwald,Bernhard (1950), RSS7E basic–36, 2011.

5.f4 ef4 6.Bg7 Rg8 7.Bb2 (7.Bd4 Nf5 8.Nf3 Qe7 9.Qe2 c5) 7...Nf5 (7...fe3 8.Qh5 (8.Nf3) 8...Bf5 (8...Bg4 9.Qh7 Bb4) 9.de3 Nd7–+ (9...Bc2 10.Nc3–/+)) 8.Qh5 fe3 9.Qh7 ed2 (better 9...Rg6!? 10.Qh8 Bf8–/+; 9...Rf8–+) 10.Nd2=+ Qe7 11.Ne2 Rf8 12.0-0-0? (better 12.Qh3=+) 12...Ne3–+ 13.Re1 Bf5 14.Qh5 Bg6 (14...Bc2?? 15.Nd4 Be4 16.Re3+–) 15.Qh3 Nc2 16.Rd1 (16.Qc8 Qd8 17.Nd4 Ne1 18.Qb7 Nd7=) 16...Nd7 17.Nc3 Qe6 18.Qf3? (18.Be2 0-0-0 19.Nde4 de4 20.Kc2 e3 21.Bd3 Qh3 22.gh3–+) 18...Nb4 19.a3 (19.Nb3 Ne5 20.Qf2 Ng4–+) 19...Ne5 20.Re1 Nbd3 (20...Ned3 21.Bd3 Nd3 22.Qd3 Bd3 23.h4–+) 21.Bd3 Nd3 (worse 21...Bd3 22.Re5 Be5 23.Qd3+=) 22.Qd3 Bd3 23.Re6 (23.Nd5 Be2 24.Nc3 0-0-0 25.Re2 Qf5–+) 23...fe6 24.Nf3 (24.Re1 Kd7 25.Re3 Bf1–+) 24...0-0-0 25.Kd2 Be4 26.Ke2 Bf3 27.gf3 Be5 (27...Rg8!? 28.Nd1 Rg2 29.Nf2–+) 28.Nd1 Bb2 (28...Rf5 29.Be5 Re5 30.Kf2–+) 29.Nb2 e5 (29...Rf5 30.Nd3–+) 30.h4 e4 31.fe4 de4 (31...Rde8 32.h5 Re4 33.Kd2 Rf2 34.Kc3–+) 32.Ke3 (32.h5 Rh8–+) 32...Rf3 33.Ke4 Ra3 34.h5 Rb3 35.Rh2 (35.Nd1 Rb5 36.Nc3 Rb4 37.Ke5 Rd3–+) 35...Rb5 36.h6 Rh8 (36...Rb4 37.Ke5–+) 37.Nd3 (37.Nc4–+) 37...Rb6 38.h7 Re6 (38...Rg6!? 39.Ne5 Rg7 40.Re2–+) 39.Kf5 Re7 40.Kg6 a5 41.Nf4 (41.Rh5 a4–+) 41...Rhh7! 42.Rh7 Rh7 43.Kh7 a4 44.Kg6 (44.Nd3 a3 45.Nc1–+) 44…a3 0–1. Akimov,Gennadiy (1975) – Prikhodko,Anton (2070), Petrosian Memorial Open Dimitrovgrad, 2010.

4.e3 f5

5.c4 dc4 6.Bc4 Nf6 7.Nf3 Qe7 8.0-0 Be6 9.Qb3 Bc4 10.Qc4 Nbd7 11.a4 e4 12.Nd4 Ne5 13.Qb3 g6 14.f4 ef3 15.Nf3 Nf3 16.Rf3 Ne4 17.Bh8 0-0-0 18.Qc2 Qh4 19.g3 Qg4 20.Kg2 Rh8 21.Nc3 Nc3 22.Qc3 Rd8 23.a5 Kb8 24.b6 cb6 25.ab6 a6 26.Rc1 Qa4 27.Qc2 Qb5 28.Rb1 Qe2 29.Rf2 Qg4 30.d4 Qe4 31.Qe4 fe4 32.Rf7 Time forfeit 1–0. RichardSommer (2115) – adelarosab (2080), lichess.org, 2020.

5.c4 Be6 6.d4 e4 7.c5 Be7 8.Nc3 Nf6 9.Nh3 0-0 10.Nf4 Bf7 11.Qb3 c6 (11...b6 12.c6=) 12.bc6+= bc6 (12...Nc6 13.Qb7 Nd4 14.ed4+/–) 13.Be2 (better is 13.Qb7!? Nbd7 14.Qc6+/–) 13...Nbd7= 14.0-0 Rb8 15.Qc2 g5 16.Nh3 h6 17.f4 g4 18.Nf2 h5 19.Nh1 Kg7 20.Ng3 Bg6 21.a4 h4 22.Nh1 Rh8 23.Rab1 Bh5 24.g3 hg3 25.Ng3 Bg6 26.Rf2 Rh4 27.Ba3 Rb1 28.Qb1 Qh8 (28...Qb8!?+=) 29.Qb7+= Qb8 30.Qc6 Qb3 31.Nb5 Qe3 32.Nf1 Qb3 33.Qa6 e3 34.Rg2 Ne4?? (better is 34...Rh3+/–) 35.Qa7 Nf2 (35...Nef6 36.c6 Ba3 37.cd7 Nd7 38.Qd7 Kh6+–) 36.Qd7 Nh3 37.Kh1 Nf2 (37...Kf6 38.Rg3 Nf2 39.Kg2 Rh3+–) 38.Rf2! ef2 (38...Kf6 39.Bd1! Qd3 40.Bc2+–) 39.Qe7 (39.Qe7 Kg8 40.Qh4+–) 1–0. Szkodnikow_i_ofiar – craig4000, ChessWorld.net, 2015.

5.Nf3 Qe7 6.c4 Nf6 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3 0-0 10.a4 Kh8 11.Be2 Be6 12.0-0 Nd7 13.Qc2 Rae8 14.Rfc1 h6 15.h3 Nc5 16.d3 e4 17.de4 Ne4 18.Nd4 Bd7 19.Bb2 Qh4 20.Bf3 Ng5 21.Bb7 Nh3 22.gh3 Qh3 23.f4 Qe3 24.Qf2 Qh3 25.Rc3 Qg4 26.Rg3 Qf4 27.Qf4 Bf4 28.Rg2 Be5 29.Nf3 Bb2 30.Rb2 Re3 31.Rg2 f4 32.Nh4 Bh3 33.Ng6 Kg8 34.Nf8 Bg2 35.Kg2 Kf8 36.Kf2 g5 37.Rc1 Rb3 38.Rc7 Rb2 39.Kf3 Rb3 40.Kg4 Rg3 41.Kf5 f3 42.Kf6 f2 43.Rc8 1–0. RichardSommer (2060) – A_Kondra (2105), lichess.org, 2020.

5.Nf3 Qe7 6.Be2 Nf6 7.0-0 0-0 8.a3 h5 9.d4 e4 10.Ne5 Be5 11.de5 Nfd7 12.Bh5 Ne5 13.Qd5 Nf7 14.Bf7 Rf7 15.Nd2 Be6 16.Qb7 1–0. axtur777 – A_Ergenc65, lichess.org, 2019.

5.Nf3 Qf6 6.c4 c6 7.a4 Be6 8.Qb3 Nd7 9.Nc3 Ne7 10.Be2 0-0 11.0-0 Nc5 12.Qa2 dc4 13.Bc4 Bc4 14.Qc4 Kh8 15.d4 Nd7 16.de5 Ne5 17.Qe2 N7g6 18.Rfd1 Rad8 19.Nd4 Qh4 20.g3 Qh3 21.f4 Ng4 22.bc6 Rfe8 23.Nf5 Nf4 24.gf4 Bf4 25.Rd8 Bh2 26.Kh1 Rd8 27.Ne4 Be5 28.Kg1 Bh2 29.Kh1 Bg3 30.Kg1 Bh2 31.Kh1 ½–½. RichardSommer (2200) – Mar_1 (2160), lichess.org, 2020.

5.f4 Qe7 6.Nf3 ef4-/+ 7.Qe2 fe3 8.Qe3 Qe3 9.de3 Kf7 10.Bd3 (10.c4 Nf6 11.Bd4 Nbd7-/+) 10...Ne7 (10...Nf6 11.Bd4-/+) 11.0-0=+ Rf8 12.Nc3 Kg8 (12...Nd7 13.Ne2=+) 13.Ne2=+ Nd7 14.Nh4 (14.Nf4 Nc5=+) 14...Ne5 15.Be5 Be5 16.Rab1 Bd7 (16...Bd6 17.Nf3-/+) 17.a4 (17.Nf3 Bd6-/+) 17...Rae8 18.Nd4 g6 19.c4 Kg7 20.Nhf3 Bf6 21.Rbc1 dc4 22.Bc4 c6 (22...c5 23.Ne2-/+) 23.bc6?? (better 23.Be6 Bc8 24.Bc8 Nc8 25.bc6=) 23...Nc6-+ 24.Rfe1 (24.Rb1 Na5 25.Bb5 Bb5 26.Rb5-+) 24...Nd4 25.Nd4 Re3! 26.Re3?? (better 26.Ne6 Be6 27.Be6 Re1 28.Re1-+) 26...Bd4 27.Kf2 0-1. myposition (1745) - Lance5500 (2620), lichess.org, 2018.

5.f4 Qe7 6.g3 ef4 7.Qh5 g6 8.Qf3 (8.Qe2 Nf6 9.ef4 0-0=) 8...Nf6 (8...Be5 9.Nc3 fe3=+) 9.gf4=+ Be6 10.Nh3 0-0 11.Ng5 Nbd7 12.h4 h5 13.Be2 c5 14.Nc3 (better is 14.c4+/–) 14...b6?? (14...d4!? 15.Ne6 dc3 16.Nf8 cb2=) 15.d4?? (better is 15.Qg2 Bf7 16.Bf3+–) 15...c4 16.a4 (16.Rg1!? Bf7 17.Nf7 Qf7 18.a3+=) 16...Bb4= 17.0-0 Ne4 18.Nge4 fe4 19.Qg3 Kh7 20.Rf2 Bc3 21.Bc3 Nf6 22.Rg2 Bg4 23.Bg4 Ng4 24.Rf1? (24.Rd2 a6 25.Rdd1 Nh6=+) 24...Rf6 25.Be1 Nh6 26.Qg5 Nf5 27.Bg3 Re6 28.Re1 Qg5 29.fg5 a6 30.ba6 Ra6 31.Be5 Re7 (32.Bf6 Rea7–+) 0–1. MasterofDisaster – Laksman4, Live Game Caissa's Web, 2004.

5.Nf3 Nf6

6.Be2 Nbd7 7.0-0 (7.Nc3 0-0 8.0-0 a6 9.a4 b6 10.Ng5 Qe7 11.Nf3 Bb7 12.ba6 Ba6+=) 7...0-0 8.Nc3 Qe7 9.a4 c5 10.a5 e4 11.Ng5 d4 12.ed4 cd4=.

6.Be2 e4 A) 7.Nd4 c5 (7...0-0 8.f4 Qe7 9.0-0 c5 10.bc6 Nc6 11.Qe1 Nd4 12.Bd4 Bc5=) 8.bc6 Nc6 (8...bc6 9.0-0 0-0 10.f4 c5 11.Nb5 Be7 12.Be5 Nc6=) 9.f4 (9.h3+= 0-0 10.Nb5 Bc5 11.0-0 a6 12.Nd4 Nd4–/+) 9...0-0 10.0-0 Qb6 11.Bc3 Bc5 12.Nb3 d4+=; B) 7.Ne5 Nbd7 8.Nd7 Bd7 9.0-0 c6 10.Nc3 Qc7 11.h3 0-0 12.f4 cb5+=.

6.Be2 Be6 7.0-0 Nbd7 8.a4 b6 9.Ba3 Qe7 10.Bd6 Qd6 11.Na3 Nc5 12.c4 e4 13.Nd4 Bd7 14.cd5 Nd5 15.Nc4 Qe7 16.f3 0-0 17.fe4 fe4 18.Rf8 Rf8 19.Qc2 Nb4 20.Qc3 Nbd3 21.Rf1 Rf1 22.Bf1 Qf7 23.Bd3 Nd3 24.Nc6 Qf2 0–1. cmulligan (2085) – mi (2165), net–chess.com, 2014.

6.Be5 A) 6...0-0 7.d4 (7.Be2 Be5 8.Ne5 Nbd7 9.Nf3 a6 10.ba6 b6 11.Nd4 Nb8 12.0-0 Na6+=) 7...Be5 8.Ne5 Nbd7 9.c4 Qe7 10.Nd7 Qd7 11.cd5 Nd5 12.Bc4 Qf7+/–; B) 6...Be6 7.Be2 (7.d4 Be5 8.Ne5 Nbd7 9.Nd7 Qd7 10.Bd3 0-0 11.0-0 Rae8 12.Qf3 Ne4+/–) 7...Be5 8.Ne5 Nbd7 9.Nd7 Qd7 10.d4 0-0-0 11.0-0 Rhe8 12.a4 Qd6+/–; C) 6...Be5 7.Ne5 0-0+= 8.d4 Nbd7 9.c4 Qe7 10.Nd7 Bd7 11.cd5 f4 12.Qb3 Kh8+=.

6.Ne5 Be5 7.Be5 0-0 8.Bb2 Ne4 9.c4 Qg5 10.cd5 Nd7 11.Nc3 Ndc5 12.d4 Nd7 13.Ne4 fe4 14.g3 Nf6 15.Bg2 Bg4 16.Qb3 Bf3 17.0-0 Bg2 18.Kg2 Qf5 19.Qd1 Nd5 20.h3 Rf7 21.a4 Raf8 22.Ba3 Re8 23.Qd2 Qf3 24.Kg1 Re6 25.Ra2 Rh6 26.Kh2 Qg4 27.h4 Rh4 28.gh4 Qh4 29.Kg1 Qg4 30.Kh2 Rf6 31.f4 Rh6 0–1. RichardSommer (2060) – KocTournament (2095), lichess.org, 2020.

4.e3 Bf5

5.c4 Nf6 (--> 4.e3 Nf6 5.c4 Bf5).

5.Be2 Qg5 6.g3 Be4 7.Bf3 Bf3 8.Nf3 Qe7 9.d3 Nf6 10.0-0 e4 11.de4 de4 12.Nd4 Be5 (better is 12...Nbd7=) 13.Nf5+/– Qf8?? (better is 13...Bb2 14.Ne7 Ke7+/–) 14.Be5+– g6 (14...Qc5 15.Ng7 Ke7 16.Nf5 Ke6 17.Bf6 Kf6+–) 15.Bf6 (15.Bf6 Nd7 16.Ng7 Qg7 17.Bg7+–) 1–0. cmulligan (2265) – islanderfan (1990), net–chess.com, 2011.

5.Nf3 Nd7 6.c4 dc4 7.Bc4 Ngf6 8.0-0 0-0 9.a4 Re8 10.Nc3 Nc5 11.d4 ed4 12.Nd4 Bg6 13.Qf3 Nfe4 14.Ne4 Be4 15.Qf7 Kh8 16.Nf5 Qg5 17.Bg7 1–0. RichardSommer (2200) – Vroombutu (2185), lichess.org, 2020.

5.Nf3 Nd7 6.c4 Ngf6 7.cd5 Nd5 8.a4 0-0 9.Nc3 Nc3 10.Bc3 e4 11.Nd4 Bg6 12.Be2 Ne5 13.0-0 Nd3 14.f3 Qh4 15.f4 c5 16.bc6 bc6 17.Nc6 Rac8 18.Ne5 Rc3 19.dc3 Bc5 20.Qd2 Bf5 21.Nd3 Rd8 22.Rab1 ed3 23.Bf3 Re8 24.Rfe1 Qf4 25.Kh1 Qh6 26.Rb7 g6 27.e4 Qd2 28.Rf1 Bc8 29.Rc7 Qc3 30.e5 Ba6 31.g3 Qd4 32.Rc5 Qc5 33.Kg2 d2 34.Rf2 Qe3 35.Bd1 Qe1 36.Re2 Time forfeit 1–0. RichardSommer (2120) – BobMamurov1988 (2160), lichess.org, 2020.

5.Nf3 Nd7 6.c4 Ngf6 7.cd5 Nd5 8.Nc3 Nb4 9.e4 Bg4 10.a3 c5 11.ab4 cb4 12.Nd5 0-0 13.Be2 f5 14.d3 f4 15.Qb3 Kh8 16.Nb4 Nc5 17.Qd1 Ne4 18.de4 Bb4 19.Nd2 Be2 20.Qe2 f3 21.gf3 Rc8 22.Ba3 Ba3 23.Ra3 Rc1 24.Qd1 Rd1 25.Kd1 Qd6 26.Ra2 Rf3 27.Ke2 Rf8 28.Ra7 Rf2 29.Kf2 Qd2 30.Kf3 Qf4 31.Kg2 Qe4 32.Kg3 Qe3 0–1. RichardSommer (2225) – strongchessplayer1 (2215), lichess.org, 2020.

5.f4 Nd7 6.Nf3 Qe7 7.Be2 Ngf6 8.fe5 Ne5 9.0-0 Bg6 10.Nd4 0-0 11.Nf5 Bf5 12.Rf5 Rfe8 13.a4 Rac8 14.Qf1 c5 15.Bd3 (15.a5 Neg4 16.g3 Be5 17.Be5 Ne5=) 15...c4 (worse is 15...Nd3 16.Bf6 gf6 17.Qd3=) 16.Be2 b6 17.Nc3 Qc7?? (better is 17...Ne4=) 18.Rf6+– gf6 19.Nd5 (19.Qf6?! Be7 20.Qf4 Rcd8+/–) 19...Qd8 20.Nf6 Kg7 (20...Kf8 21.Ne8 Ke8 22.Qf5+–) 21.Ne8 Qe8 22.Qf5 (22.Bc4 f6 23.Bd3 Qh5+–) 22...f6 (22...Qe6 23.Qg5 Kf8 24.Rf1+–) 23.Rf1 Qf8 24.Bf3 Nf3 25.Rf3 (25.gf3?! Rc5 26.Qg4 Kh8+–) 25...Rc5 (25...c3 26.Bc3 Rc3 27.dc3 Be5+–) 26.Bf6 Qf6 27.Qf6 (27.Qf6 Kg8 28.Qf7 Kh8 29.Rg3 Rg5 30.Qf6 Kg8 31.Rg5) 1–0. Grabmeier,Johannes (1905) – Holzapfel,Alois, Deggendorf op 2nd, 2008.

5.f4 ef4 6.Bg7 Qh4 7.g3 fg3 8.Nf3 +–.

4.e3 f6

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

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

4.e3 Nf6

5.a4 c6 6.c4 0-0 7.Nf3 e4 8.Nd4 c5 9.Nb3 a6 10.cd5 Nd5 11.Qh5 Nf6 12.Qh4 Be6 13.Nc1 ab5 14.ab5 Ra1 15.Ba1 Qe7 16.Bf6 gf6 17.Nc3 Kg7 18.Be2 Rg8 19.Qe4 Nd7 20.0-0 f5 21.Qf3 Ne5 22.Qh5 Ng6 23.Nd3 c4 24.Nf4 Nf4 25.ef4 Bf4 26.g3 Bh6 27.d4 f4 28.d5 Bd7 29.Bc4 fg3 30.hg3 Kh8 31.Ne4 Qe4 0–1. A_VB – RAJ1A, lichess.org, 2019.

5.a4 c6 6.c4 0-0 7.Nf3 e4 8.Nd4 c5 9.Nb3 Re8 10.Be2 Be5 11.d4 ed3 12.Bd3 Bb2 13.Ra2 Be5 14.cd5 Nd5 15.Bc4 Nb4 16.Rd2 Qe7 17.0-0 Be6 18.Be6 fe6 19.Qf3 Rf8 20.Qe4 Bf6 21.Rfd1 Nd5 22.Rc2 b6 23.a5 Rd8 24.N1d2 Nd7 25.Nc4 Nb4 26.Rcd2 Nd5 27.Ra2 Nb4 28.Rad2 Nd5 29.Ra2 Rab8 30.ab6 ab6 31.Ra7 Ra8 32.Ra8 Ra8 33.Rc1 Ra4 34.Qd3 Ne5 35.Ne5 Be5 36.g3 Nb4 37.Qe4 Ra3 38.Nd2 Bf6 39.Nc4 Ra8 40.Ne5 Be5 41.Qe5 Nd3 42.Qe4 Nc1 43.Qa8 Kf7 44.Qf3 Qf6 45.Qc6 Nd3 46.f4 Qa1 47.Kg2 Qe1 48.Qd7 Kf6 49.Qd8 Kf7 50.Qd7 Kf6 51.Qd8 Kf5 52.Qg5 Ke4 53.Kh3 Qf1 54.Kg4 Ne5 55.Qe5 Kd3 56.Qe6 Ke2 57.Qa2 Ke1 58.Qb1 Kf2 59.Qf1 Kf1 60.e4 Ke2 61.e5 Kd3 62.e6 Kc4 63.e7 Kb5 64.e8Q Kb4 65.Qe4 Kc3 66.Qe3 Kb4 67.Qe4 Ka5 68.Qa8 Kb5 69.Qb7 Kc4 70.Qb6 Kc3 71.Qc5 Kd3 0–1. A_VB – kikbukovski, lichess.org, 2017.

5.a4 Nbd7 6.Nf3 b6 7.d4 ed4 8.ed4 0-0 9.Be2 Re8 10.0-0 Ne4 11.Bd3 Ndf6 12.Nbd2 Bg4 13.c4 dc4 14.Bc4 Nd2 15.Qd2 Bf3 16.gf3 Qd7 17.d5 Qh3 18.Bf6 Qh2 0–1. A_VB – Oathbreaker, lichess.org, 2018.

5.a4 Be6 6.Nf3 c6 7.Be5+= cb5 (7...Be5 8.Ne5 0-0 9.Bd3+=) 8.Bb5+/– Nc6 9.Bd6 Qd6 10.Nc3 0-0 11.0-0 d4 12.ed4 Nd4 13.Nd4 Qd4 14.Bd3 Rad8 (14...Ng4 15.Rb1+/–) 15.Re1+/– Qd6 (15...Ng4 16.Qe2+/–) 16.Qf3 Bg4 (better is 16...Ng4!? 17.Qg3 Qg3 18.fg3 Nf6+/–) 17.Qb7+– Bh5 18.Nb5 (worse is 18.Qa7 Ng4 19.g3 Ne5+–) 18...Qf4 19.Qa7 Ra8? (19...Ng4 20.g3 Qd2+–) 20.Qd4 Qd2 (20...Qh6+–) 21.Bh7! Nh7 22.Qd2 1–0. pierre – mahbeth, Microsoft, 2012.

5.a4 Qe7 6.c4 d4 7.Be2 de3 8.de3 e4 9.Nc3 c6 (9...0-0 10.Qd4 Nbd7 11.Nd5+=) 10.Qd2 (10.Qc2 Nbd7–/+) 10...0-0 11.Rd1 Bc7 12.Qc2 Re8 (12...Nbd7 13.Nh3–/+) 13.Kf1 0–1. marekt – Netsurferdude, internet, 2015.

5.a4 Bf5 6.Nf3 Nbd7 7.Nc3 0-0 8.Ne2 Re8 9.Ng3 Bg6 (9...Bg4 10.Be2=+) 10.Nh4 Qe7 (10...Nf8 11.Ng6 Ng6 12.Be2=) 11.Ng6= hg6 12.Be2 Rad8 13.h4 d4 14.h5 gh5 15.Bh5 de3 (15...Nh5? 16.Qh5 (16.Nh5?! g6=; 16.Rh5?! de3 17.fe3 Nf6=) 16...f5 17.Nf5+-) 16.de3 (16.fe3 A) 16...Nh5?? 17.Qh5 (17.Nh5?! Qe6=; 17.Rh5?! Nf6=) 17...f5 18.Nf5+-; B) 16...Qe6=) 16...e4 (16...Bb4 17.c3 Nc5 18.Qc2 Nd3 19.Kf1 Nh5 20.Rh5=+) 17.Nf5= Qf8 (17...Bb4 18.c3 Qe5 19.Qb3+=) 18.Qe2 (better 18.Nd6 Qd6 19.Qd6 cd6 20.Be2+/-) 18...g6?? (better 18...Be5 19.Ba3 Bc3 20.Kf1 Nc5+=) 19.Bg6!+- (19.Nd6 Qd6 20.Bg4 Ne5-/+) 19...fg6?? (19...Bb4 20.c3 Bd6+-) 20.Nh6 (20.Qc4 Qf7 21.Nh6 Kh8 22.Qf7 Bb4 23.Ke2 Bc3 24.Qg6 Bb2 25.Nf7) 20...Kg7-+ 21.g4 (21.Ng4-+) 21...Qe7 (better 21...Be5!? 22.Bd4-+) 22.g5 Rh8?? (22...Be5 23.gf6 Nf6 24.Bd4-+) 23.0-0-0? (23.f4 ef3 24.Qf3 Be5 25.gf6 Nf6 26.Be5 Qe5-+) 23...a6?? (better 23...Be5 24.gf6 Qf6-+ (worse 24...Nf6 25.Rd8 Bb2 26.Kb2 Qb4 27.Kc1 Rd8 28.Rd1 Qa3 29.Kb1-+)) 24.Qc4 (24.Bf6? Nf6 25.Qc4 Nd7-+; 24.gf6?! Nf6 25.Ng4 Rh1 26.Rh1 Ba3=) 24...ab5?? (24...Ne5 25.gf6 Qf6 26.Ng4 (26.Qe4?! Rh6 27.Rh6 Kh6+/-) 26...Rh1 27.Rh1+-) 25.ab5 (25.gf6 Nf6 26.Nf5 gf5 27.Rdg1 Bg3 28.Rg3 Kf8 29.Rh8 Ng8 30.Qg8) 25...Nb6?? (better 25...Rh7+=) 26.gf6 (26.Bf6 Qf6 27.gf6 Kf6 28.Qf7 Kg5 29.Rd6 Rd6 30.Qf4) 26...Qf6 (26...Kf8 27.fe7 Ke8 28.Rd6 cd6 29.Qf7 Kd7 30.e8N Kc8 31.Qc7) 27.Bf6 (27.Qf7) 27...Kf6 28.Qf7 Ke5 (28...Kg5 29.Rdg1 Bg3 30.Rg3) 29.f4 (29.Ng4) 29...ef3 30.Ng4 Ke4 31.Rd4 (31.Qg6) 1-0. chessbit (1915) - SlamasxPlus (1910), Rated Blitz game, lichess.org, 2021.

5.a4 Bf5 6.Nf3 Nbd7 7.c4 0-0 8.Nc3 e4 9.Nd4 Bg4 10.Be2 Be2 11.Nde2 dc4 12.0-0 Nc5 13.Nd4 Nd3 14.Ba3 Ba3 15.Ra3 Nd5 16.Nd5 Qd5 17.f4 f5 18.Qh5 a6 19.ba6 Ra6 20.Rb1 Rh6 21.Qg5 Rg6 22.Qe7 Qf7 23.Qf7 Rf7 24.Rb7 c5 25.Rb8 Rf8 26.Rf8 Kf8 27.Ne2 Rb6 28.g3 Rb3 29.Ra1 Rb2 30.a5 Rd2 31.Nc1 Rd1 32.Kg2 Nb4 33.a6 Na6 34.Ra6 Rc1 35.Rc6 c3 36.Rc5 Rc2 37.Kh3 Ke7 38.Kh4 Kd6 39.h3 Kc5 40.Kg5 Kc4 41.Kf5 Kd3 42.Ke6 Rf2 43.f5 c2 44.Ke5 c1Q 45.f6 Qc3 46.Ke6 Qf6 47.Kd7 Qf7 48.Kd6 Rf6 49.Kc5 Qc4 0–1. A_VB – LePionVaillant, lichess.org, 2018.

5.Nc3 0-0 6.Be2 c5 7.bc6 Nc6 8.Nf3 e4 9.Nd4 Nd4 10.ed4 Bd7 11.0-0 Qc7 12.g3 (12.h3 Rfc8–/+) 12...a6 13.d3 (13.f4–+) 13...Bb4 14.Qd2? (14.Nb1 Bh3 15.c4–+) 14...Rac8 15.de4 Ne4 16.Qe3 (16.Nd5 Nd2 17.Nc7 Nf1 18.Bf1 Rc7 19.c4–+) 16...Bc3 17.Bc3 Nc3 18.Bf3 Qc4 (18...Rfe8 19.Qd2–+) 19.Qe7 (19.Qf4 Ba4 20.Qd2 Ne4–+) 19...Bc6 (19...Ba4 20.Qb7 Qd4 21.Rfe1–+) 20.Bg4 Rce8 21.Qc5 Ne2 22.Be2 Qc5 23.dc5 Re2 (24.Rac1 Rfe8–+) 0–1. beyonze1 – DarkGenesis, Live Game Caissa's Web, 2004.

5.Nc3 0-0 6.Nge2 Bg4 7.f3 Be6 8.d4 c5 (8...e4 9.fe4 de4 10.Nf4 Bf4 11.ef4–/+) 9.dc5 Bc5 10.Qd3 Qb6 11.Nd1 (11.Na4 Qa5 12.Nac3 Rc8–/+) 11...Nbd7 12.Ng3 a6 (12...Rac8 13.a3–/+) 13.a4 (13.ba6 Ra6 14.Nf5 e4–+) 13...ab5 14.ab5 Bb4 15.c3 Ra1 16.Ba1 Ra8 17.Qb1 Bc5 18.Kf2 (18.e4 h6–+) 18...d4 (18...Bd6 19.Bd3–+) 19.cd4–/+ ed4 20.Bd4 Bd4 21.ed4 Ra2 22.Be2 Qd4 23.Ke1 Qd2 (better is 23...Nc5–+) 24.Kf1 Rc2 25.Qa1 (25.Kf2 Ne5 26.b6 Nd3 27.Kg1 Nf4–+) 25…Nh5!! (26.Kf2 Ng3 27.Kg3 Ra2–+) 0–1. Langguth,W – Goyvaerts,P, corr ICCF Cup X, 1994.

5.Nc3 0-0 6.Nf3 c5 (6...e4 7.Nd4+=) 7.bc6 Nc6 8.Nb5 Bb8 9.c4 (9.Be2 a6 10.Na3 Bd6–/+) 9...dc4 10.Bc4 a6 11.Nc3 b5 12.Be2 Bb7 (12...b4 13.Na4+=) 13.d3+= Bc7 (13...Qe7 14.0-0+=) 14.0-0 Qd6 15.Rc1 (15.Ne4 Ne4 16.de4 Qg6+=) 15...Rfd8 16.Qc2 (16.a4 b4 17.Ne4 Ne4 18.de4 Rac8+=) 16...Rac8 17.Qb1 b4 (17...Qe6 18.Ng5 Qf5 19.Nge4+=) 18.Ne4 Ne4 19.de4 Qe7 (19...Qf6 20.Rfd1+=) 20.Rfd1 Bd6 21.Rd2 a5 22.Bd1 Bb8 (22...Qf6 23.Ba4=) 23.Ba4 (23.Rd5 Na7 24.Rd8 Rd8=) 23...Rd2 24.Nd2 Na7 25.Bb3 Bc6 26.Bd5 Rd8 27.Bc6 (27.Qd3 a4=) 27...Nc6 28.Qc2 Na7 (28...Qd6 29.Nc4 Qg6 30.Rd1 Rd1 31.Qd1 Qe4 32.Na5=) 29.Nc4 Bc7 30.h3 (30.Qa4 Qe8 31.Qe8 Re8=) 30...Qe8= 31.a3 ½–½. Deneuville,Christian – Migliorini,Roberto, corr or03–026, 2003.

5.Nc3 0-0 6.g4? Bg4-+ 7.Be2 Be2 8.Qe2 d4 9.Nd1 Re8 10.Nf3 Qd7 11.Rg1 g6 (11...c5 12.e4-+) 12.c3 (12.Ng5 Qf5 13.Qf3 Qf3 14.Nf3 a6-/+) 12...dc3 13.Nc3 (13.Bc3!? a6 14.ba6 Na6-+) 13...e4 14.Nd4 Be5 (14...Bh2 15.Rh1 Be5 16.Nb3-+) 15.Nb3 a6 16.0-0-0? (better 16.Nc5 Qe7 17.d4 ed3 18.Nd3 Bc3 19.Bc3-+) 16...ab5 17.Qb5 (17.f4 ef3! 18.Qf3 b4-+) 17...Qb5 (better 17...Bc3 18.Qd7 Bb2 (18...Nfd7?! 19.Bc3 Ra2 20.Kb1-+; 18...Nbd7?! 19.Bc3 Ra2 20.Bb2-+) 19.Kb2 Nbd7-+) 18.Nb5 Bb2 (18...Nbd7!? 19.Kb1 Re7 20.N3d4-+) 19.Kb2-/+ Na6 20.N3d4 (20.d4!?-/+) 20...Rad8 21.h4 (21.a3 Rd7-+) 21...c6 22.Nc3 Nd5 (22...Nb4!? 23.f4-+) 23.Nd5 Rd5 24.Rg5 (24.f3 Nb4-+) 24...Rg5 (24...Rd7 25.a3-+) 25.hg5 Re5 26.f4 ef3! 27.Nf3 Rf5 28.Rg1? (28.Nd4 Rg5 29.Rb1-+) 28…Rf3 0-1. Lardy28 (1920) - Aaron_Whitney (2290), Hourly Bullet Arena, lichess.org, 2022.

5.c4 d4 6.Nf3 de3 7.fe3 e4 8.Nd4 0-0 9.Be2 Nbd7 10.0-0 Ne5 11.Nc3 Nd3 12.Bd3 ed3 13.Qb3 Bh2 14.Kh2 Ng4 15.Kg3 Qg5 16.Ne4 Qg6 17.Rf3 Qe4 18.Rf4 Qg6 19.Kf3 h5 20.Rh1 b6 21.Nc6 a6 22.Ne7 Kh7 23.Ng6 Kg6 24.Qd3 f5 25.Qd5 Ra7 26.Qd4 Rf6 27.Qd8 Bb7 28.Ke2 Rd6 29.Qe8 Kh7 30.Rh5 Nh6 31.Qf7 Rg6 32.Rff5 ab5 33.c5 Ra2 34.Qc7 Bg2 35.Bd4 bc5 36.Be5 Be4 37.Rf7 Rg1 38.Rg7 Kh8 39.Qd8 1–0. RichardSommer (2160) – Bintudan (2155), lichess.org, 2020.

5.c4 Bd7 6.cd5 Nd5 7.Nf3 0-0 8.Ne5 Be5 9.Be5 Qe8 10.Bg3 Bb5 11.Bb5 Qb5 12.Qb3 Qb3 13.ab3 c6 14.Nc3 Nc3 15.dc3 a5 16.Bc7 Na6 17.Ba5 Nc5 18.b4 Nb3 19.Ra3 Na5 20.ba5 Rfd8 21.Ke2 Rd5 22.Rha1 Kf8 23.c4 Rh5 24.h3 Rg5 25.g3 Rh5 26.h4 Rc5 27.Kd3 Rd8 28.Kc3 Rf5 29.f4 Re8 30.Kd4 c5 31.Kd3 Rf6 32.g4 Rfe6 33.Ke2 Re4 34.Kf3 Rc4 35.Rb1 Re7 36.Rab3 Rce4 37.Rc3 c4 38.Rb4 R4e6 39.Rbc4 g6 40.f5 Ra6 41.Rc5 f6 42.Kf4 b6 43.ab6 Rb6 44.e4 Rb4 45.R3c4 Rb1 46.Rc3 Rh1 47.fg6 hg6 48.h5 g5 49.Kf5 Kf7 50.Rf3 Re1 51.h6 R1e4 52.h7 R7e5 53.Re5 Re5 0–1. RichardSommer (2105) – Jardsonfb (2100), lichess.org, 2020.

5.c4 e5 6.cd5 Nd5 7.e4 Nf4 8.g3 Ng6 9.Bg2 0-0 10.Ne2 f5 11.ef5 Bf5 12.0-0 Bd3 13.Bb7 Nd7 14.Ba8 Qa8 15.Qb3 Kh8 16.Qd3 Nc5 17.Qe3 Rf3 18.Qg5 Ne4 19.Qg4 Nf6 20.Qe6 h6 21.Nbc3 Ne4 22.Qg6 Nf2 23.Rf2 Bc5 24.Raf1 Qf8 25.Ne4 Bf2 26.Rf2 Rf2 27.Nf2 Qb4 28.Be5 Qe7 29.Qg7 Qg7 30.Bg7 Kg7 31.Ne4 Kg6 32.Nd4 Kh5 33.Nc5 Kg4 34.Nce6 c5 35.bc6 1–0. aravind555 (1710) – alimean (1750), lichess.org, 2020.

5.c4 Bf5 6.Ne2 (6.cd5!? Nd5 7.Qf3=) 6...dc4–/+ 7.Ng3 Be6 8.Be2 (8.Qc2 a6 9.Bc4 ab5 10.Be6 fe6–/+) 8...0-0 (8...a6 9.ba6 Na6 10.Na3 Ba3 11.Ba3–/+) 9.Qc2–/+ Bd5 (9...a6 10.Bc4 ab5 11.Be6 fe6 12.0-0–/+) 10.0-0 a6 11.ba6 Na6 (worse is 11...ba6 12.e4 Bb7 13.Na3=; worse is 11...Ra6 12.e4 Be6 13.a4–/+) 12.Bc4 Nb4 13.Qc3 Na2 14.Qb3 Rb8?? (better is 14...Nb4+=) 15.Ra2 Bc4 16.Qc4 b5 17.Qc2 Rb7 18.Nc3 (18.Ra6 b4+–) 18...Rb6 (better is 18...b4!? 19.Qb3 bc3 20.Qb7 cb2 21.Rb2 Re8+–) 19.Qb3 b4 20.Na4 (20.Nce4 Ne4 21.Ne4 Re8+–) 20...Rb8 21.Rc1 Qe7 22.Ne2 h5 (22...e4 23.Rc4 Nd7 24.Nd4+–) 23.d4 ed4 24.Nd4 c5? (24...Ne4 25.Ba1 Qe5 26.g3+–) 25.Ne2 (better is 25.Nc6 Bh2 26.Kh1+–) 25...Rfc8 26.Rc2 (26.Bf6 Qf6 27.Nb2 Ra8+–) 26...Be5? (better is 26...Bh2!? 27.Kh2 Qc7 28.Be5 Qe5 29.Kg1 Ne4+/–) 27.Be5+– Re8?? (27...Qe5 28.Nb2 Rd8+–) 28.Bb8 Qe5 29.Rc1 Qe3 30.fe3 Rb8 31.Rac2 c4 32.Rc4 Rb7 33.Qb1 Re7 34.Rc8 Ne8 35.Qb4 Re6 36.Qb5 Kf8 37.Qd7 Re5 38.R1c7 Kg8 39.Qf7 Kh7 40.Re8 Rg5 41.Qg8 Kh6 42.Rc6 Rg6 43.Rg6 Kg6 44.Re6 Kg5 45.Qg7 Kf5 46.Nd4 1–0. Player – MacChess 5.0, 2000.

5.c4 Bg4 6.Be2 Be2 7.Qe2 dc4 8.Qc4=+.

5.c4 Bg4 6.Be2 Be2 7.Ne2 0-0 8.0-0 (8.cd5 Nd5 9.Qb3 Nf6=+) 8...dc4 9.Qc2 a6 10.Qc4 Nbd7 11.d4 ab5 12.Qb5 c6 13.Qb7 Rb8 14.Qc6 Rb2 15.Qd6 Re2 16.de5 Ne8 17.Qd5 (17.Qd3 Rb2=+) 17...Rb2 (better is 17...Qc7 18.Qd3 Rc2=+ (18...Qe5? 19.Qe2 Qa1 20.Qd2+–)) 18.Rd1 +/–. Wartig,Wolfgang – Andre,K, corr (year?).

5.c4 Bg4 6.Be2 Be2 7.Ne2 dc4 8.Qc2=+.

5.c4 Bg4 6.Nf3 Nbd7 (6...e4 7.h3 Bh5 8.g4 Ng4 9.hg4 Bg4 10.Be2 ef3 11.Bf3 Bf3 12.Qf3=) 7.Be2 (7.cd5 e4 8.h3 Bh5+= (worse is 8...ef3 9.hg4 Ng4 10.Qf3+/–)) 7...dc4 (7...e4 8.Bf6 Qf6 9.Nd4–/+) 8.h3 Bf3 9.gf3 Nb6 10.a4 a5 11.ba6 Ra6 12.a5 Qa8 13.ab6 Ra1 14.Ba1 Qa1 15.bc7 0-0 16.Bc4 Qa5 17.Nc3 Qc7 18.Qa4 Rc8 19.Bd3 Be7 20.Ke2 Rd8 21.Rb1 b6 22.Qb5 Qd6 23.Ra1 Qc7 24.Ra6 The isolani on b6 becomes a target 24...Bc5 25.Na4 Increasing the pressure on the isolated pawn on b6 25...Nd7 26.Bf5 Nb8 27.Nc5 bc5 (worse is 27...Qc5 28.Rb6 Qb5 29.Rb5+/–) 28.Rb6 g6 29.Be4 Kh8 (29...Qc8 30.Rb7+=) 30.Rb7+= Qd6 31.Qd3 Qd3 32.Bd3 Kg7 33.Bb5 Kf6 34.Rc7 h5 35.Rc5 Rd6 36.Rc7 Re6 37.Kd3 Na6 38.Ra7 Nb4 39.Ke4 Nc6 40.Rd7 Na5 41.f4 ef4 42.Kf4 g5 43.Kg3 Re5 44.Be2 Ke6 45.Ra7 h4 46.Kg4 Nc6 47.Ra6 Kd7 48.Bd1 Nb4 49.Ra7 Kd6 50.d4 Rd5 (50...Re7 51.Re7 Ke7 52.Kg5+–) 51.Bf3 Rb5 52.Be2 (52.Be2 Rb8 53.Rf7+–) 1–0. Janek – Charlie, internet, 2016.

5.d3 c6 6.a4 0-0 7.Nf3 Nbd7 8.Be2 Qc7 9.Nbd2 Rd8 10.c4 e4–/+.

5.d3 c6 6.c4 dc4 (6...cb5 7.cb5 0-0–/+) 7.Bc3 (better is 7.dc4!? Bb4 8.Nc3+=) 7...cd3–+ 8.Qd3 0-0 9.Ne2 (9.Nd2 cb5 10.Ne4 Ne4 11.Qe4 a6–+) 9...Bc7 (9...e4 10.Qc4–+) 10.Qd8 Rd8 (10...Bd8?! 11.Be5 cb5 12.Nd2–/+) 11.bc6 (11.a4 Be6–+) 11...Nc6 12.f3? (better is 12.Nd2–+) 12...Nd5 13.Bd2 (13.Na3 Ne3 14.Bd2–+) 13...Ncb4 14.Bb4 (14.e4 Nc2 15.Kd1–+) 14...Nb4 15.Na3 Nd3 16.Kd2 Nf2 17.Ke1 Nh1 18.Nc4 (18.Nc3 Ba5 19.Rc1 Be6–+) 18...Be6 19.Nd2 (19.Ng3 Ng3 20.hg3 Rac8–+) 19...Ba5 20.Rd1 Rd2 21.Rd2 Rd8 22.Kd1 (22.Nd4 ed4 23.Kd1 Nf2 24.Kc1 Bd2 25.Kd2 d3–+) 22...Rd2 23.Kc1 Ba2 24.Ng3 Ng3 25.hg3 (25.Bd3 Bb3 26.Kb1 Bc3 27.Bc2 Bc2 28.Ka2 Rd1 29.hg3 Ra1) 25...Bc3 26.g4 (26.Bb5 Bb3 27.Be2 Re2 28.e4 Re1) 26...Bb3 27.Be2 Re2 28.e4 (28.g5 Re1) 28...Re1 0–1. Winter,Armin – Joutsi,Jukka, corr ICCF WT/II/GT/34, 1996.

5.d3 c6 6.d4 e4 7.c4 Bg4 8.Qd2 dc4 9.Bc4 cb5 10.Bb5 Bd7=+.

5.d3 c6 6.Nf3 Bg4 7.d4 e4 8.h3 Bh5 9.g4 Ng4 10.hg4 Bg4–/+.

5.d3 Nbd7 A) 6.Nf3 a6 7.ba6 ba6 8.Nc3 c5 9.Be2 Rb8 10.Rb1 d4=+; B) 6.Be2 0-0 7.Nf3 a6 8.Nc3 ab5 9.Nb5 Bb4 10.Bc3 Bc3–/+; C) 6.Nc3 0-0 7.Nf3 a6 8.Be2 ab5 9.Nb5 Bb4 10.Bc3 Bc3–/+; D) 6.d4 e4 7.Ba3 Ba3 8.Na3 Qe7 9.Nb1 Nb6 10.Nd2 0-0=+.

5.d4 Bg4?? 6.f3+/– ed4 7.fg4 de3 8.Qf3 (8.Qd4 0-0 9.g5 c5=) 8...Bb4 (8...0-0 9.Bf6 (9.Qe3 Re8 10.Qe2 Ng4–+) 9...Qf6 10.Qf6 gf6 11.Ne2+/–) 9.Nc3 (9.c3 Be7+/–) 9...d4 (9...0-0 10.0-0-0 (10.Qe3?? Re8 11.Qe2 Re2 12.Nge2 Ng4–+) 10...a6 11.Qe3 Bc3 12.Bc3+/–) 10.0-0-0 c6 (better is 10...c5!? 11.g5 Nfd7 12.Qe4 Kf8+/–) 11.Ne4+– Ne4 12.Qe4 Qe7 13.Rd4 Bd2 (13...Bc5 14.Qe7 Ke7 15.Re4 Kf8 16.Bd4 Bd4 17.Rd4+–) 14.Kd1 a6 15.Qe7 Ke7 16.Re4 Kd6 17.ba6 Na6 18.Nf3 Nc5 19.Nd2 ed2 20.Re2 Ra2 (20...f6 21.a3+–) 21.Be5 Kd5 (21...Kd7 22.Rd2 Kc8+–) 22.Bg7 (22.Kd2?! f6 23.Kc1 Rha8 24.c4 Ke6 25.Bc3 Kd6 26.Ra2 Ra2+–) 22...Rha8 23.Rd2 (23.Rd2 Ke6 24.Bc4 Ke7 25.Re1 Ne6 26.Ba2 Ra2 27.g5+–) 1–0. Rosner,Dirk – Bergner,Thomas, DESC, 1999.

5.Qe2 0-0 6.Na3 Re8 7.c4 d4 8.e4 c6 9.d3?? (better is 9.Nf3–/+) 9...Ba3 10.Ba3 Qa5 11.Qd2 Qa3 12.Rb1 Qe7 13.h3 cb5 14.Rb5 Nc6 15.Be2 a6 16.Rb2 Rb8 17.Nf3 Bd7 18.0-0 b5 19.cb5 Rb5 20.Rc2 Qb4 21.Qb4 Rb4 22.Rfc1 Rc8 (better is 22...Rb6–+) 23.Ne5=+ Rbb8?? (23...Ne5 24.Rc8) 24.Nd7 Nd7 25.Rc6 Rc6 26.Rc6 Ra8? (26...Rb2 27.Bg4 Nb6 28.a4+/–) 27.Bf3 (27.Rd6 Nf6+–) 27...g6 28.e5 (better is 28.Rd6 Ne5 29.Rd4+–) 28...Ne5+= 29.Rg6 Ng6 (better is 29...hg6 30.Ba8 Nd3=+) 30.Ba8+/– Kg7 31.a4 a5 32.g3 Kf6 33.f4 Ke7 34.Be4 Kd6 35.h4 Kc5? (35...Nf8 36.Kf2+/–) 36.h5 (better is 36.Bg6 fg6 37.g4+–) 36...Nf8+/– 37.g4 Kb4 38.Bc6 Ne6 39.f5 Nf4 40.Bb5 Nd5 41.Bc4 Nc3?? (41...Ne3 42.g5 Nf5 43.Bf7 Ka4+–) 42.Bf7 Ka4?? (42...Na4 43.g5 Nc5+–) 43.Be8 Kb4 44.f6 Nd5 (44...Ne2 45.Kf1 Nf4 46.Bd7+–) 45.f7 1–0. MasterofDisaster – grubby, Live Game Caissa's Web, 2004.

5.Qe2 0-0 6.Nf3 Re8 7.Qd1 Bd7 8.Be2 a6 9.Nc3 ab5 10.Nb5 Bb5 11.Bb5 c6 12.Be2 Nbd7 13.0-0 Qc7 14.h3 e4 15.Nd4 c5 16.Nb5 Qb6 17.Nd6 Qd6 18.Bb5 Re7 19.a4 Ne5 20.d4 Nc4 21.Bc4 dc4 22.dc5 Qd1 23.Rfd1 (worse is 23.Rad1 Ra4 24.Ra1 Rb4+=) 23...Nd7 24.c6! bc6 25.a5 f6 26.Rd4 Ne5 27.Re4 Nf3?? (27...Ra6+–) 28.gf3 (28.gf3 Kf7 29.Rc4+–) 1–0. b4_player – jensen, internet, 2013.

5.Be2 c6 6.a4 a6 7.c4 dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 0-0 11.Nc3 Bd7 12.Nf3 Qa5 13.Qb1 h6 (13...Bf5 14.Qa2 Qa2 15.Ba2+=) 14.0-0= Re8 Black prepares e4 15.d4 e4 16.Nd2 Bf5 (16...cb5 A) worse is 17.Nde4 Ne4 (17...bc4 18.Nd6 Re6 19.Qb7 Rd6 20.Qb8 Ne8 21.Rb1+/–) 18.Ne4 Bh2 (18...bc4 19.Nd6 Rf8 20.Nc4+–) 19.Kh2 bc4–/+; B) 17.Bb5 Bb5 18.Qb5 Qb5 19.Nb5=) 17.f4 (17.f3 Qc7 18.h3 Nh5+=) 17...Ng4 18.Re1 Bb4 19.Qb3 Re7 20.Bb2 Bc3 21.Bc3 Qc7 22.d5 cd5 23.Bd5 Rd7 24.Be4 Be4 25.Ne4 Rd3 26.Rd1 (26.Qb4 Re3 27.Re3 Ne3+/–) 26...Re3 (better is 26...Qd7 27.Rd2 Ne3+=) 27.Qd5?? (better is 27.Qb4 Qb6 28.Nc5+=) 27...Qf4–/+ 28.g3 Qe4 29.Qe4 Re4 30.Rd8 Kh7 31.Rb8 Re3 32.Bd4 Rb3 (better is 32...Rd3!? 33.Ba7 Rd1 34.Kg2 Rd2 35.Kg1 Rd7–/+ (35...Nh2 36.Rb7 Kg6 37.b6+=)) 33.Rb7= Kg6 (better is 33...Rd3 34.Bc5 Kg6=) 34.h3?? White plans b6 (34.b6!?+/–) 34...Nf6 (better is 34...Rg3!? 35.Kf1 Rh3–/+) 35.b6 Rg3 36.Kh2 Rb3 37.Ra7 Nd5 38.b7 Ne7? (38...f6 39.Bc5 Rb2 40.Kg1 Rb1 41.Kf2 Rb2 42.Kf1 Rb1 43.Ke2 Nc3 44.Kd3+–) 39.Ra6 (39.Kg2 Nc6 40.Ra6 Rb7 41.Rc6 f6+/–) 39...Kh7 40.Rb6 Rb6 41.Bb6 Nc6 42.Bc7 f5 43.Kg3 Kg6? (better is 43...g5=) 44.Kf4+– Kf6 45.b8Q?? (better is 45.Be5! Ke6 46.Bg7+–) 45...Nb8 46.Bb8 g5 47.Kf3 h5 48.Kg3 h4 49.Kg2 ½–½. Sundin,Thommy (1900) – Storm,Patrik (1620), Bjoerkstadsschacket, Umea Sweden, 1988.

5.Be2 Nbd7 6.c4 dc4 7.Bc4 Nb6 8.Be2 0-0 9.d4 e4 10.a4 Nbd5 11.Bc4 Be6 12.Ne2? (12.Qc2 Nb4 13.Qc3 Bc4 14.Qc4 Nd3 15.Ke2 Nb2–+) 12...Nb4 (better is 12...Ne3!? 13.fe3 Bc4 14.0-0–+) 13.Nd2 Bc4 14.Nc4 Nd3 15.Kd2?? (better is 15.Kf1–/+) 15...Nf2–+ 16.Qb3 Nh1 17.Rh1 a6 18.b6 Re8 (18...Rc8 19.Ke1–+) 19.Nd6 Qd6 20.bc7 Rac8 21.Qb7 Rc7 22.Qb3 Rec8 23.Nc3 Ng4 (23...Qd7 24.Ke1–+) 24.h3? (24.Ne4 Qc6 25.Kd3 Qg6–+) 24...Ne3! 25.Ke3 (25.Ne4 Nc4 26.Ke1–+) 25...Qg3 (26.Kd2 Qg2 27.Ne2 Qh1–+) 0–1. Steingraeber,Barbara – Melzer,Wilfried, RSS7E–3 remoteschach.de, 2002.

5.Be2 Nbd7 6.Nf3=+.

5.Be2 e4 6.d3 0-0 7.de4 de4 8.Nd2 (8.Nc3 Qe7 9.Nd5 Nd5 10.Qd5 Rd8–/+) 8...Nbd7 (8...Qe7 9.Bf6 gf6 10.c3–/+) 9.Nh3 Nc5 10.Nf4 (10.Nc4 Na4 11.Bf6 Qf6 (worse is 11...gf6 12.Nd6 Qd6 13.Qd6 cd6 14.Nf4+=) 12.Nd6 Qc3 (12...Qd6?! 13.Qd6 cd6 14.Nf4=) 13.Kf1 cd6–/+) 10...Bf4 11.ef4 Nd5 12.Be5 f6 13.Bd4 Ne6 14.Bc4 Kh8 (14...Nd4?! 15.Ne4 c5 16.bc6+=) 15.Be3 (15.Ne4 Ndf4 16.Bc3 Ng2 17.Kf1 Nef4 18.Qd8 Rd8–/+) 15...Nef4 16.0-0 f5 17.Qe1 Re8 (17...Be6 18.Bd5 Nd5 19.f3–+) 18.Bf4 Nf4 19.Qe3 Qg5 20.g3 Nh3 21.Kh1 Be6 22.f4 ef3! 23.Qf3 (23.Nf3 Bc4 Deflection; 23.Qf3 Qd2 Pinning (23...Qd2 Deflection); 23.Rf3 Bc4 Combination) 23...Qd2 24.Be6 Re6 (better is 24...Ng5 25.Qd5 Rad8 26.Qd2 Rd2–+) 25.Qf5–/+ Rf6 26.Qh3 Rf1 27.Rf1 Qd5 28.Qg2 Qb5 29.a4 Qa6 (29...Qb4 30.Qd5+=) 30.Rf2 (30.Rf7 Qa4 31.Qb7 Rd8+=) 30...h6 (30...Qb6 31.Qf3 h6 32.Kg2+=) 31.Qe4 Rd8 32.Kg2 Qc6 (32...Qb6 33.Rf5+=) 33.Qc6= bc6 34.Rf5 Rd5 (34...Rd2 35.Kh3=) 35.Rd5 cd5 36.Kf3 Kh7?? (36...g5 37.Kg4 Kg7+=) 37.Kf4+– Kg6 38.Ke5 Kg5 (38...c6+–) 39.Kd5 Kg4 40.Kc6 (40.a5 Kh3 41.Kc6 Kh2+–) 40...Kh3 41.c4 (better is 41.a5 Kh2 42.Kb7 Kg3 43.Ka7+–) 41...h5+= (41...Kh2? 42.g4 Kg3 43.Kc7+–) 42.c5 Kh2 43.Kc7 Kg3 44.Kb8 (44.c6 h4 45.Kb8 h3+/–) 44...h4 45.c6 h3 46.c7 h2 47.c8Q h1Q ½–½. Gavrijski,Dimitar (2085) – Vysniauskas,Vaidas, Memorial ICCF, 2007.

5.Be2 Bf5 6.Nf3 Nbd7 7.0-0 0-0 8.d4 ed4 (8...e4 9.Ne5=+) 9.Nd4= Be4 10.Nd2 Qe7 (10...Re8 11.Ne4 Ne4 12.c4=) 11.Ne4 Qe4 (< 11...Ne4 12.Nf5 Qe6 13.Ng7+/–; 11...de4?! 12.Nf5 Qe6 13.Nd6 cd6 14.Qd2+=) 12.Nf3 (12.c4 Rfd8=) 12...Rfe8 13.Bd3 Qg4 14.a4 Ne4 15.c4 (15.a5 Ndc5=) 15...dc4 16.Bc4 Ndf6 (16...Nb6 17.Bd3=) 17.Qb3 Qg6 18.Rad1 h6 (18...Rad8 19.Bd4+=) 19.Bd4+= Re7 (19...c5 20.Nh4 Qh5 21.Bf6 gf6 22.Nf3+/–) 20.Qb2 (20.Bd5 Nd5 21.Qd5 Rb8+=) 20...a5 (20...a6 21.ba6 ba6 22.Qb7+/–) 21.ba6 ba6+/– 22.Qb7 Ree8 23.Ba6 Rab8 24.Qc6 Re6 25.Qc2 Bh2+= 26.Kh2 Qh5 27.Kg1 Ra6 28.Qc7 Re8 29.Qc4 Rd6 30.Bf6+/– Rd1 31.Rd1 Nf6 32.Qb5 Qg4 33.Qa5 Kh7 34.Rc1 Ne4 35.Rc7 f5 36.Qb6 Kh8 37.Qd4 Rb8 38.Qa1 Rd8 39.a5 Kh7 40.a6 Ra8 41.a7 Kh8 42.Rb7 Nd2?? 43.Rb8 Kh7 44.Nd2 Ra7 45.Qa7 Qd1 46.Nf1 Qd6 47.Qb6 Qd5 48.Qd8 Qd8 49.Rd8 (49…h5 50.Nd2+–) 1–0. SuperForte – GrandMasterChess, 1994.

5.Ne2 0-0 6.Nbc3 Bg4 7.d4 Re8 8.de5 Be5 9.h3 Bf5 10.a4 (10.Nd4 Bd4 11.Qd4 Bc2+=) 10...c5–/+ 11.Ra3 (11.g4 Be4 12.Ne4 Ne4 13.Be5 Re5+=) 11...Nbd7 (11...d4 12.ed4 cd4 13.Nb1–+) 12.f4 Bc3 13.Bc3 Nb6 14.Bf6 Qf6 (worse is 14...gf6 15.Ng3 Qd7 16.a5+=) 15.Qc1 d4 16.ed4 cd4 17.Kf2 (17.g4 Qh4 18.Kd1 Bg4–+) 17…Rac8 (17...Rac8 18.Qd1 Rc2–+). Stevenson,Michael D – Dale,Chris, NZCCA CT9704, 1997.

5.Ne2 c5 6.Ng3 Be6 7.d4 (7.Be2 0-0+=) 7...Nbd7 (7...ed4 8.ed4 c4 9.Nd2–/+) 8.c4 (8.de5!? Ne5 9.Be2+=) 8...dc4–/+ 9.dc5 (9.d5 Nd5 (9...Bd5?! 10.e4=) 10.Bc4 N7b6 11.Bd5 Nd5–/+) 9...Bc5 (9...Nc5 10.Qc2 e4 11.Nd2–+) 10.Qc2 Bb4 11.Nc3 Nc5 (11...a6 12.ba6 Ra6 13.a3–/+) 12.Rd1 Qa5 13.a3 Bc3 (worse is 13...Ba3 14.Ra1+/–) 14.Qc3 Qc3 15.Bc3 Nfd7 16.Bb4 (16.f4 Na4 17.Bb4 a5 18.ba6 ef4 19.ab7 Rb8 20.ef4 c3+–) 16...b6 (16...Rd8 17.Bc3–/+) 17.Rc1 (17.f4 a5 18.Bc5 Nc5 19.f5=) 17...Nd3 (17...Rc8!?–/+) 18.Bd3+= cd3 19.Rc3 (19.Kd2 Rd8=) 19...Rd8 (19...Nf6 20.Rd3 Bc4 21.Rc3 Bb5 22.Nf5+=) 20.Rd3= Bc4 (20...Nc5 21.Rd8 Kd8=) 21.Rd6 (better is 21.Nf5 Nc5 22.Ng7 Ke7 23.Rc3+=) 21...Bb5+= 22.f3 (22.Nf5 0-0+=) 22...Rc8 23.Kd2 a5 24.Bc3 g6 (24...Bc4 25.f4+=) 25.e4 (25.f4 Bc6+=) 25...Ke7 (25...f6 26.Rd1 Ke7–+) 26.Rd5+= Bc4 27.Be5 Ne5 28.Re5 Kf6 29.f4 Rhd8 30.Ke3 Rd3 31.Kf2 Ba6 (31...Ra3!? 32.Rd1 Ra2 33.Ke3 b5 34.Rd6 Kg7–+) 32.Rb1–/+ Rc2 (32...Rc6–/+) 33.Kg1? (33.Ke1 b5 34.a4 Rg2–/+) 33...Rd6?? (better is 33...Kg7–+) 34.Rd5 Rdc6 35.e5 Ke7 36.Rd6 (36.Rbd1 Bc8 37.Rd6 R6c3+=) 36...b5 (36...Bb7 37.Rc6 (worse is 37.Rb6 Rg2 38.Kg2 Rb6 39.Kf2 Rd6 40.ed6 Kd6–/+) 37...Bc6 38.Rb6+=) 37.Rbd1 (37.Ne4 Rc1 38.Rc1 Rc1 39.Kf2 Bb7=) 37...Rd6 38.ed6 The passed pawn on d6 quickly leads to threats (worse is 38.Rd6 Bb7 39.Rb6 Bc6–/+) 38...Kd7 39.Ne4 Bb7 40.Nf6 Kd8 41.Re1 Threatening mate... how? 41...Rg2 (better is 41...Bc6 42.g4 Rc3+=) 42.Kf1+/– Bc6 43.d7! Kc7 (43...Bd7 Theme: Deflection from g2 44.Kg2) 44.Rc1?? (44.Re8 Bd7 45.Kg2 Be8 46.Ne8 Kc6 47.Kf2+=) 44...Rd2+= 45.Ke1 Rd4 46.Ke2 Rc4 47.Rd1 Kd8 48.Ke3 (48.Rd6 Rc3–/+) 48...Rc3 49.Kd4 Rc4 (49...Rc2 50.Nh7 Kd7 51.h3–+) 50.Ke5 (50.Ke3 b4 51.ab4 ab4 52.Rd6–/+) 50...b4–/+ 51.ab4 ab4 52.Kd6? (52.Rd4!? Rd4 53.Kd4 Bd7 54.Kc4–/+) 52...Ba4 (better is 52...Bf3 53.Rd3 Rc6 54.Ke5 Re6 55.Kd4 Rf6 56.Rf3 g5–+) 53.Re1?? (53.Ra1 Rc6 54.Kd5 Ra6–+) 53...Bd7! 54.Nd7 Rd4 55.Kc5 Rd7 56.Kb4 Rd4 57.Kc5 Rf4 58.Re2 Rf5 59.Kd6 Rf6 (59...Rf6 60.Kd5 Kd7–+) 0–1. Natali,Peter – Pohl,M, Oberschwaben–chB, 1991.

5.Nf3 c6 6.c4 cb5 7.cb5 b6 8.a4 0-0 9.Nc3 Qe7 10.Be2 e4 11.Nd4 Bc5 12.f3 Bd4 13.ed4 ef3 14.gf3 Bh3 15.d3 Nbd7 16.Qd2 Rae8 17.0-0-0 Qe2 18.Ne2 1–0. axtur777 – John_Bush, lichess.org, 2019.

5.Nf3 d4 6.ed4 ed4 7.Bd4 0-0 8.Bc3 Re8 9.Be2 Bg4 10.0-0 Nd5 11.Bb2 Nf4 12.h3 Ne2 13.Kh1 Bf3 14.gf3 Qh4 15.Nc3 Qh3 0–1. axtur777 – kingjake, lichess.org, 2019.

5.Nf3 Bd7 6.Ne5 0-0 7.a4 Qe7 8.Nd7 Nbd7 9.Be2 Nc5 10.0-0 Be5 11.Be5 Qe5 12.d4 Qe6 13.dc5 Qe5 14.c3 Ne4 15.Qd4 Qf5 16.Bd3 Rfe8 17.Nd2 Qh5 18.Ne4 de4 19.Be4 Rad8 20.Qb4 h6 21.Bb7 Rd2 22.Bf3 Qg5 23.b6 cb6 24.cb6 ab6 25.Qb6 Red8 26.a5 1–0. Abdullaevich (1880) – synopsys (1890), lichess.org, 2020.

5.Nf3 Nbd7 (--> 4.Nf3 Nd7 5.e3 Ngf6).

5.Nf3 Qe7 (--> 4.Nf3 Qe7 5.e3 Nf6).

5.g3 0-0 6.Nf3 Qe7 7.Bg2 c5 8.d4 (better is 8.d3!?–/+) 8...ed4–+ 9.0-0 de3 10.fe3 Qe3 11.Rf2? (better is 11.Kh1 d4 12.Bc1–+) 11...Ne4 12.Qe2 Qf2 13.Qf2 Nf2 14.Kf2 Bf5 15.Nh4 Be6 16.Nc3 (16.c4 d4 (16...dc4?! 17.Bb7 Nd7 18.Ba8 Ra8 19.Nf3–+) 17.Bb7 Nd7 18.Ba8 Ra8–+) 16...Rd8 17.Nd5 Bd5 18.Bd5 Bg3! 19.hg3 (19.Kg3 Rd5) 19...Rd5 20.g4 (20.Nf3 Nd7–+) 20...g6 (better is 20...Rd2!? 21.Ke3 Rc2 22.Rb1–+) 21.Nf3 Nd7 22.Re1 Kf8 23.Rh1 h5 24.gh5 Rh5 25.Rg1 Re8 26.c4 Nb6 27.Rc1 Re4 28.a4 Rc4 29.Rc4 Nc4 30.Bc1 Ne5 31.Ng5 Nd3 32.Kg3 Nc1 33.Ne4 c4 34.Nd6 c3 35.Nb7 c2 36.Nd6 Ne2 37.Kf2 Rh2 38.Kf3 c1Q 39.a5 Qf4 0–1. MasterofDisaster – ronpaz, Live Game Caissa's Web, 2004.

5.g3 0-0 6.Bg2 Bg4 7.Ne2 Qd7 8.0-0?? (better is 8.c4–/+) 8...Qb5–+ 9.Nbc3 Qb2 10.Rb1 Be2 11.Ne2 (11.Qe2 Qc2 12.e4 de4–+) 11...Qa2 12.Rb7 Nc6 13.Nc3 Qa6 14.Rb5 Bb4 (14...Nb4 15.Qb1 c5 16.Qa1 Qa1 17.Ra1–+) 15.Nd5 Qb5 16.Nc7 (16.Nf6 gf6 17.Qg4 Kh8–+) 16...Qc4 17.d3 Qc3 18.Nb5 (18.Na8 Ra8 19.g4 Rd8–+) 18...Qc5 19.Nc7 (19.c4 Rac8 20.Qa4 Rfd8–+) 19...Rac8 20.Na6 Qb6 21.Nb4 Nb4 22.c4 (22.g4 h6 23.h4 Rc2–+) 22...Rfd8 23.d4 ed4 24.ed4 Rd4 25.Qb3 Rcc4 26.Rb1 Rd2 27.Qc4 Qf2 28.Kh1 Qg2 0–1. MasterofDisaster – soniaprh2, Live Game Caissa's Web, 2004.

5.g3 b6 6.Bg2 e4 (6...c6 7.Nc3=+) 7.Ne2 (7.f3 Nbd7=) 7...a6=+ 8.Nd4 ab5 9.Nb5 Ba6 (9...Be7 10.Be5 Na6 11.f3=+) 10.Nd4 (10.Nd6 Qd6 11.f3 Nbd7=+) 10...c5 (10...0-0 11.Nf5–/+) 11.Ne2 (11.Nf5 0-0=+) 11...Nbd7 12.0-0 Ne5 13.a4 (13.f3!?–/+) 13...Nf3–+ 14.Bf3 ef3 15.Nf4 (15.Nec3 Bf1 16.Kf1 Be7–/+) 15...Bf1 16.Kf1 0-0 (better is 16...Bf4!? 17.ef4 d4–+) 17.Qf3–/+ Be7 (17...Bc7 18.Ra3–/+) 18.Nc3 Qd7 19.Ncd5= Rad8? 20.Nf6 Bf6 21.Bf6 gf6 22.d3 Qf5 23.e4 Qe5 24.Re1 Kh8 25.Nh5 Rd6 26.Qg4 Qg5 27.Qe2 Re6 28.Rb1 f5+= 29.h4 Qg4 30.Nf4 Qe2+/– 31.Ne2 fe4= 32.d4 e3 33.d5= Rd6 34.c4 Ra8 35.Ra1 Kg7 36.fe3+= b5 37.cb5+/– Rd5 38.b6 c4 39.b7 Rb8=+ 40.Rb1 Ra5 41.Nd4 Ra4? 42.Nc6+– c3 43.Nb8 c2 44.Rc1 Rb4 45.Rc2 Rb7 46.Nc6 Rc7 47.e4 Kf6 48.g4 h6 49.Kf2 Kg7 50.Kf3 f6 51.Kf4 Rc8 52.Rc5 Re8 53.Nd4 Kf7 54.Nf5 Kg6 55.h5 Kh7 56.Rc7 Kh8 57.Nh6 Ra8 58.Rc6 Rf8 59.Nf5 Kh7 60.Nh4 Rf7 61.Kf5 Kg7 62.Kf4 Kh6?? 63.e5+– Kg7 64.Nf5 Kh7 65.ef6 Ra7 66.Re6 Ra4 67.Kg5 Ra7 68.Nd6 Ra5 69.Kh4 Ra7 70.f7 Kg7 71.h6 Kf8 72.Re8 1–0. jorginho10 – LOBOKNIGHT, Live Game Caissa's Web, 2007.

5.g4? Bg4-+ 6.Be2 Be2 7.Qe2 0-0 8.Nc3 c6 9.Nf3 Nbd7 10.Rg1 g6 11.Nh4 Ne4 (11...Kh8 12.Ng2-+) 12.Nf5 Nc3 13.dc3 (13.Bc3 Nf6-/+) 13...Bc5 (13...Nb6 14.Rd1-+) 14.h4 (better 14.c4!?-+) 14...Kh8 15.Nh6? (15.Ng3-+) 15...Qh4 16.Ng4 (16.Qg4 Qg4 (16...Qh6?! 17.Qd7 Qh4 18.Qb7-+) 17.Ng4 f5-+ (17...cb5?! 18.Rd1-+)) 16...f5 17.0-0-0 (17.Ne5 Ne5 18.c4-+) 17...fg4 18.Rh1 (18.Rdf1 g3! 19.Rg3 cb5-+) 18...Qf2 (18...Rf2 19.Qd3 Qg5 20.Kb1 Qe3 21.Qg6-+) 19.Qg4 Be3 (19...Nf6 20.Qg6 Rg8 21.Qd3 Qe3 22.Kb1 Qd3 23.cd3 cb5 24.c4 bc4 25.Be5-+) 20.Kb1 Nf6 21.Qe6 (21.Qh3 Bf4-+) 21...Rae8 22.Qd6 (22.Qh3 Bf4 23.c4 Qg3-+) 22...Bc5 23.Qd7 (23.Qc7 Re7 24.Qa5-+) 23…Nd7 0-1. Lardy28 (1995) - Aaron_Whitney (2225), Hourly Bullet Arena, lichess.org, 2022.

5.h3 0-0 6.Nf3 e4 7.Nd4–/+.

5.h3 0-0 6.Nf3 Re8 7.a4 b6 8.Ba3 Bb7 9.d4 e4 10.Bd6 ef3 11.Be5 fg2 12.Bg2 Nbd7 13.f4 a6 14.Nc3 c5 15.e4 Ne4 16.Be4 Qh4 17.Kd2 Ne5 18.Nd5 Qf2 19.Kc1 Bd5 20.Bd5 Qf4 21.Qd2 Qd4 22.Qd4 cd4 23.Ba8 Ra8 24.a5 ab5 25.a6 Nc4 26.Re1 Na5 27.Rb1 h6 28.Rb5 Ra6 29.Rd1 Nc4 30.Rd4 Na3 31.Rd8 Kh7 32.Rbd5 Nc4 33.c3 Ra1 34.Kc2 Rh1 35.Kb3 Na5 36.Ka4 Rh3 37.Rb8 Nc4 38.Kb4 Ne3 39.Rd7 f5 40.Rb6 f4 41.Re6 Rh5 42.c4 Nf5 43.c5 f3 44.c6 f2 45.Rd1 Nd4 46.Rd6 Nc2 47.Kc3 Rc5 48.Kd2 Ne1 49.Ke2 Rf5 50.Kf1 Nc2 51.R1d3 Ne1 52.R3d5 Rf7 53.Rd7 Rf6 54.c7 Nc2 55.Re7 Black resigned 1–0. hamiltonharris (1930) – Cycleforpi (1975), ChessWorld.net, 2019.

5.h3 c5 6.c4 Nbd7 7.a4 0-0 8.d3 d4 9.e4 a6 10.Nf3 ab5 11.ab5 Ra1 12.Ba1 Nb6 13.Be2 g6 (13...Be6 14.Ng5+=) 14.0-0 Nh5 15.Re1 Nf4 16.Bf1 f5 (16...Qf6 17.Nbd2+=) 17.Nbd2= Qc7 18.Qb3 (18.ef5 Bf5 19.Ne4 Be4 20.Re4 Qf7=) 18...Be6 (18...fe4 19.Re4 Qe7 20.Bb2+=) 19.Bb2 Ra8 (19...fe4 20.Re4 Bf5 21.Re1+=) 20.Ra1 (20.g3 Nh5=) 20...Ra1+= 21.Ba1 Nd7 (21...Qe7!?+=) 22.g3= fe4 23.Ng5 Nd3?? (better is 23...h6 24.Ne6 Ne6 25.Ne4 Be7+=) 24.Ne6+– (24.Bd3?! ed3 25.Ne6 Qa5+/–) 24...Qa5 (24...Qb6 25.Ne4 (25.Bd3?! ed3 26.Ng5 Qa5+/–) 25...Nb4 26.Bb2+–) 25.Ne4 Nc1 (25...Qa1 26.Nd6 Ne1 27.Nb7 d3 28.Bd3 Nd3 29.Kh2 Qf1=) 26.Qf3 (better is 26.Qb2 Qb6+–) 26...Be7 27.Bb2 Qe1 28.Bc1 (28.N4g5 Bg5 29.Ng5 Ne2 30.Kg2 Nf4 31.gf4 e4 32.Ne4 b6+–) 28...Qc1 29.h4 (better is 29.N4c5 Nc5 30.Nc5+–) 29...Nb6 (29...h6 30.h5 g5+–) 30.N4g5 Bg5 31.Qf8 1–0. Zierke,Marcel – Pfeiffer,Joerg (1670), Berlin op, 2003.

5.h3 c6 6.c4 0-0 7.a4 a6 8.f3 Re8 9.d4 e4 10.f4 cb5 11.cb5 Bb4 12.Bc3 Qa5 13.Qd2 Bc3 14.Qc3 Qc3 15.Nc3 ab5 16.Bb5 Bd7 17.Bd7 Nbd7 18.Nge2 Nb6 19.0-0 Nc4 20.Kf2 Nd7 21.Rfb1 Reb8 22.Nb5 Ncb6 23.a5 Nc4 24.Nc7 Ra7 25.Nd5 b6 26.ab6 Ra1 27.Ra1 Ndb6 28.Nb6 Nb6 29.Rb1 Kf8 30.Nc3 Ke7 31.Ne4 Kd7 32.Nc5 Kc6 33.Na6 Rb7 34.Nb4 Kc7 35.Nd3 Kb8 36.Ne5 f6 37.Ng4 h5 38.Nh2 g6 39.Nf3 Kc7 40.Nh4 g5 41.Nf5 gf4 42.ef4 Kb8 43.Ng7 h4 44.Nf5 Kc8 45.Nh4 1–0. axtur777 – Mohit24, lichess.org, 2019.

5.h3 Bd7 6.a4 0-0 7.Na3 a6 8.c4 ab5 9.Nb5 Bc5 (9...Be6 10.c5 Bc5 11.Be5–/+) 10.d4 (better is 10.Be5!? dc4 11.Bc4+=) 10...ed4 11.Nd4? (11.Bd4 Bd4 12.Qd4 c5–/+) 11...Qe8?? (better is 11...Bb4!? 12.Ke2 dc4–+) 12.Ngf3 Ba4 13.Ra4? (better is 13.Qd3–/+) 13...Qa4–+ 14.Qa4 Ra4 15.Be2 (15.cd5 Ra2 16.Bc3 Nd5–+) 15...Nc6 (better is 15...dc4!? 16.Kd2–+) 16.Nc6 bc6 17.0-0 Ne4 18.cd5 cd5 19.Bb5 Rb4 20.Bc6 Rb2 21.Bd5 Nd2 22.Rd1 Nf3 23.Bf3 Rfb8 24.Kh2 Bd6 25.Kg1 Rb1 26.Rb1 Rb1 0–1. MasterofDisaster – Alize, Live Game Caissa's Web, 2004.

5.h3 Qe7 6.d4 (6.c4 0-0–/+) 6...0-0 (6...Nbd7 7.Nf3–/+) 7.Nf3 (7.de5 Be5 8.Ba3 Qe6 9.Bf8 Ba1–/+ (9...Kf8?! 10.c3=)) 7...e4 (7...ed4 8.Qd4 c5 9.Qh4+=) 8.Nfd2 a6 9.a4 (9.c4 dc4 10.Nc3+=) 9...c6 (9...ab5!? 10.ab5 Ra1 11.Ba1 Be6–/+) 10.c4+= ab5 (10...dc4 11.Nc3+=) 11.ab5 Ra1 12.Ba1 cb5 (12...dc4 13.Nc3 Bf5=) 13.cb5 (13.c5!? Bc7 14.Bb5+=) 13...Be6–/+ 14.Bb2 (14.Be2 Nbd7–/+) 14...Ne8 (14...Nbd7 15.Be2–/+) 15.Qb3+= f5 (15...Nd7 16.Be2+=) 16.g3 (16.Nc3 Nf6+=) 16...Nd7 17.Ba3 (17.Be2 Nb6+=) 17...Ndf6 (17...Nef6 18.Be2+=) 18.h4 (18.Bb2 Nc7+=) 18...Ng4 (18...Ba3 19.Na3 Nd6 20.Be2–/+) 19.Be2 (19.Bd6 Nd6 20.Be2 Rc8+=) 19...Kh8 (19...Nef6!?–/+) 20.Bd6= Nd6 (20...Qd6 21.0-0+=) 21.Qa3 (21.Nc3 Rc8 22.0-0 Qc7=) 21...Rc8 22.0-0 h5 (22...Qc7 23.Nc3+=) 23.Kg2 (23.Rc1 Kh7+=) 23...Rg8 (23...Qc7 24.Qb4=) 24.Nc3 (24.Rc1 Rb8+=) 24...Qd8 (24...Rc8 25.b6=) 25.Bg4 (25.Na4 Re8 26.Nc5 Qf6+=) 25...fg4 26.Qc5 (26.Rc1 Qd7+=) 26...Nf5 27.Ne2 (27.b6 Qd7+=) 27...Bf7 (27...Qa5!? 28.Nb3 Qa2=) 28.Ra1 (28.Nf4 b6 29.Qc6 Rf8+/–) 28...Qd7+= 29.Rc1 Be6? (better is 29...Nd6!?+=) 30.Nf4+– Bf7 (30...Nd6 31.Qc7+/–) 31.Qc7 Rd8 32.b6 (32.Qe5 Nd6+–) 32...Nd6+/– 33.Qd7 Rd7 34.Rc7 (34.Rc5 Ne8+/–) 34...Rc7 35.bc7 Kg8 36.Nb1 Kf8 37.Nc3 Ke8 (37...Ke7 38.Nfd5 Kd7 39.Kf1+/–) 38.Ncd5 (38.Nfd5 Kd7+=) 38...Kd7+= 39.Kf1 Kc6 (39...Ne8+=) 40.c8Q (40.Ne7!? Kc7 41.Neg6+=) 40...Nc8= 41.Nc3 Nd6 42.Ke2 (42.Na4 b6=) 42...b5 43.Kd2 (43.Kd1 b4 44.Nb1 Ne8=) 43...b4 44.Nb1 Kb5 45.Kc2 Nc4 46.d5 (46.Kc1 Ka4=) 46...Ka4 (46...Kc5 47.Nd2 Nd2 48.Kd2+=) 47.Ne6 (47.Kd1 Kb3=) 47...Na3 (47...Nb6 48.Kb2+=) 48.Kb2=. Osovsky,Boris – Zamarbide Ibarrea,Borja (2135), Mislata op–B, 2003.

5.a4 0-0

6.c4 dc4 7.Bc4 Bg4 8.Be2 Be6 9.f3 c6 10.Nc3 cb5 11.Bb5 Nc6 12.Nge2 Bd7 13.0-0 a6 14.Bc6 Bc6 15.d4 ed4 16.Nd4 Bd7 17.Ne4 Ne4 18.fe4 Qh4 19.g3 Qe4 20.Qf3 Qc2 21.Rf2 Qc7 22.Rc1 Qd8 23.Nf5 Bf5 24.Qf5 Bc7 25.Qg4 g6 26.Qc4 Rc8 27.Qc3 f6 28.Qc4 Kg7 29.Qe6 Kh6 30.Bf6 Qd3 31.Qh3 1–0. A_VB – Hawli, lichess.org, 2018.

6.c4 dc4 7.Bc4 Bg4 8.Nf3 Nbd7 9.Be2 e4 10.Nd4 Be2 11.Qe2 Ne5 12.0-0 Nd3 13.Nf5 Bh2 14.Kh2 Nb2 15.Ng7 Nd3 16.Nf5 Kh8 17.Rh1 Rg8 18.Kg1 Qd7 19.Nh6 Rg6 20.f4 Ng8 21.Qh5 Rh6 0–1. A_VB – jibraat, lichess.org, 2019.

6.Nf3 Nbd7 7.c4 (7.Be2 c5 8.d3 b6=+) 7...c6 (7...e4 8.Nd4 Ne5 9.Na3-+) 8.Ba3 (8.cd5 cd5 9.Be2 e4=+) 8...Qe7 (8...c5!? 9.d3 Nb6-/+) 9.Bd6 Qd6 10.Be2 (better 10.bc6!? bc6 11.cd5 Nd5 12.Nc3-/+) 10...e4-+ 11.Nd4 Ne5 (better 11...c5 12.Nb3 d4 13.ed4 cd4-+) 12.d3? (better 12.bc6 bc6 13.cd5 Nd5 14.0-0-/+) 12...ed3-+ 13.Bd3 dc4 (better 13...Qb4!? 14.Kf1 Qb2 15.Ra3 dc4 16.Bc2-+) 14.Bc2 Qb4 15.Qd2 c5 16.0-0?! (16.Qb4 cb4 17.Nd2-+) 16...Qd2 17.Nd2 cd4 18.ed4 Rd8 (18...Nd3!? 19.Nc4 Nb4 20.Bb3-+) 19.de5 Rd2 20.ef6 (20.Rfd1 Rd1 21.Rd1-+) 20...Rc2 21.fg7 (21.Rfc1 Bf5-+) 21...Be6 22.h3 (22.Rfc1 Rd2-+) 22...c3 23.Rac1 (23.f4-+) 23...Rc1 24.Rc1 Rc8 25.Kf1 (25.f4 Bb3 26.a5 c2-+) 25...Bb3 Black intends c2 26.Ke2 c2 27.g4 (27.Kd2-+) 27...Rd8 28.a5 Rd1 29.b6 ab6 (better 29...Rc1 30.ba7 Re1 31.Ke1 c1Q 32.Ke2 Bd1 33.Kd3 Qc2 34.Ke3 Qe2 35.Kf4 Qf2 36.Ke5 Qa7 37.a6-+) 30.Rc2 Bc2 31.ab6 Rd6 32.f4 Rb6 33.h4 Rd6 34.h5 b5 35.h6 b4 36.g5 (36.Ke3 b3 37.Ke2 b2 38.g5 b1Q 39.g6 Bg6 40.Kf2 Rd3 41.Ke2 Qc2 42.Kf1 Rd1) 36...b3 37.f5 (37.g6 b2 38.Kf2 b1Q 39.gh7 Bh7 40.Kf3 Rd3 41.Kg4 f6 42.f5 Qb4 43.Kh5 Rh3) 37…Bf5 (37...Bf5 38.Kf2 b2 39.g6 b1Q 40.gh7 Bh7 41.Kg3 Qb3 42.Kf4 f5 43.Kg5 Qc4 44.Kh5 Qg4) 0-1. grandmaster1372 - Lance5500 (2620), lichess.org, 2018.

6.Nf3 e4 7.Nd4 c6 8.c4 c5 9.Nb3 Be6 10.cd5 Nd5 11.Nc3 Nc3 12.dc3 f5 13.c4 a6 14.Be2 ab5 15.ab5 Ra1 16.Qa1 Rf7 17.Be5 Be5 18.Qe5 Bd7 19.Nc5 Qa5 20.Kf1 Qd8 21.Nd7 Rd7 22.Qe6 Kh8 23.g3 Re7 24.Qd5 Rd7 25.Qc5 Rd1 26.Bd1 Qd1 27.Kg2 Qf3 28.Kg1 Qd1 29.Kg2 Qf3 30.Kg1 Qd1 31.Kg2 ½–½. A_VB – doni112, lichess.org, 2018.

6.Nf3 e4 7.Nd4 Be5 8.c3 c5 9.bc6 Nc6 10.Nc6 bc6 11.d4 Bc7 12.c4 Qd6 13.Be2 Rb8 14.Bc3 a6 15.c5 Qe6 16.Nd2 Ng4 17.h3 Nh6 18.0-0 Nf5 19.Rb1 Ng3 20.fg3 Bg3 21.Rb8 Bb8 22.a5 Qg6 23.Bg4 Bg4 24.Qg4 Qg4 25.hg4 g5 26.Rf5 h6 27.Kf2 Kg7 28.Nf1 Rh8 29.Ng3 Bg3 30.Kg3 f6 31.Rf2 h5 32.gh5 Rh5 33.Rb2 Kg6 34.Rb6 Kf5 35.Ra6 g4 36.Rc6 Rh7 37.a6 Ra7 38.Rb6 Ra8 39.c6 Ra7 40.Bb4 Ra8 41.Bd6 Ra7 42.c7 Ra8 43.Bc5 Ra7 44.c8Q Kg5 45.Qg4 Kh6 46.Rf6 Kh7 47.Ba7 1–0. A_VB – Mkro, lichess.org, 2017.

6.Nf3 Qe7 7.h3 c6 8.Be2 Bd7 9.Nc3 e4 10.Nd4 c5 11.Nb3 b6 (better is 11...a6!?+=) 12.a5+= ba5 13.Na5 Bc7 14.Nb3 Bb6 (better is 14...Be6=) 15.Na4+– Qd6 16.Be5! Qe5 17.Nb6 c4 (better is 17...ab6!? 18.Ra8 Ne8+/–) 18.Nd4+– ab6 19.Ra8 Qd6 20.Qa1 Qc5 21.Qa7 Qc8 (21...Qd6+–) 22.Qb6 Rd8 (22...c3 23.d3+–) 23.0-0 Ne8 24.Qa5 Nc7 25.b6 Na8 (25...Ne6+–) 26.b7 Qb7 (26...Nc7 27.Rb1 Nba6 28.bc8Q Rc8+– (28...Bc8?? 29.Nb5 Ne6 30.Na7+–)) 27.Qd8 Be8 28.Qe8 1–0. Janek – Catalina, internet, 2016.

6.Nf3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Qe2 Qd7 10.h3 (10.0-0 Be5=) 10...c5 11.Nb3 Qe6 12.0-0 Nbd7 13.d4 (13.d3 ed3 14.cd3 a6=+) 13...c4 14.N3d2 Rfc8 15.c3 (15.Nc3 Bb4=+) 15...Rf8 (15...Bc7 16.Re1-/+) 16.Na3 (16.Ba3 a5-/+) 16...b6 (16...h6 17.Nc2-/+) 17.f3 ef3 18.Nf3? (better 18.Qf3!? Rfe8 19.Nc2-/+) 18...Rae8 (18...Ne4 19.Qe1-+) 19.Rae1 (19.Nc2 Ne4 20.Qe1 Ndf6-+) 19...Bg3 (19...Ne4 20.Qd1-+) 20.Ng5 (20.Nc2 Ne4-+ (worse 20...Be1 21.Ba3 Nc5 22.Qe1-/+)) 20...Qe7 21.Qc2 (21.Nc2 h6 22.Nf3-+) 21...Be1 22.Re1 h6 (22...Qd6 23.Nb1 Qg3 24.Nf3-+) 23.Nf3 Ne4 24.Nb1 Nd6 25.Ba3 Qf6 (25...f5!? 26.Nbd2-+) 26.Nbd2-/+ Re6 27.e4 de4 28.Ne4 Qe7?? (better 28...Ne4 29.Bf8 Ng5 (29...Kf8?! 30.Re4 Qe7 31.Re6 Qe6 32.Kf2=) 30.Re6 Nf3 (30...Ne6?! 31.Ba3=; 30...Qe6?! 31.Ng5 hg5 32.Bb4-/+) 31.gf3 Qe6-+) 29.Bd6+/- Rd6 30.Ned2?? (better 30.Neg5! Qe1 31.Ne1 hg5 32.Nf3+/-) 30...Re6-+ 31.Rd1 (31.Re6 Qe6 (31...fe6?! 32.Nc4 Qf7 33.Qe4=+) 32.Kh2 f5-+) 31...Rc8 (better 31...Re2!? 32.Qf5 Qe3 33.Kh1-+) 32.Qf5 Nf6 (32...g6 33.Qf4 Qa3 34.d5 Qc5 35.Nd4-+) 33.Ne5 Re5?? (better 33...Qa3 34.Ne4 Rce8-+) 34.de5+= (worse 34.Qe5 Qa3 35.Qf5 Rd8=+) 34...Rc5?? (better 34...Qc5 35.Kh2 Re8=) 35.ef6+- (35.ef6 Qe3 36.Qf2 Qf2 37.Kf2+-) 1-0. Bushwacker (2025) - Motz Markus (2040), ChessWorld.net, 2016.

6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 c6 9.Be2 c5 10.c4 d4 11.ed4 ed4 12.d3 Re8 13.0-0 Nbd7 14.Bf3 Qc7 15.Nd2 Bh2 16.Kh1 Bf4 17.Bc1 Rad8 18.Ne4 Ne4 19.Be4 Nf6 20.Bf4 Qf4 21.Qf3 Qh4 22.Kg1 Ng4 23.Qh3 Qh3 24.gh3 Ne5 25.f4 f5 26.Bd5 Kh8 27.fe5 Re5 28.Rf4 b6 29.Rd1 Rf8 30.Rd2 Rf6 31.Kf2 h6 32.Kf3 g5 33.Re4 Re4 34.de4 fe4 35.Ke4 Rf4 36.Ke5 Kg7 37.Rd3 Kg6 38.Bc6 Kh5 39.Bg2 Kh4 40.Kd5 Rf2 41.Be4 Ra2 42.Bf5 Ra4 43.Kc6 Rc4 44.Kb7 Ra4 45.Be6 Ra5 46.Bc4 Ra1 47.Be6 1–0. A_VB – faizbaroud, lichess.org, 2018.

6.Nf3 h6 7.Be2 Re8 8.d4 e4 9.Nfd2 a6 10.0-0 ab5 11.ab5 c6 12.c4 Ra1 13.Ba1 Nbd7 14.c5 Bb8 15.b6 Nh7 16.f4 Qh4 17.Qe1 Qf6 18.Nb3 Ndf8 19.Na5 Ng6 20.Nd2 Nh4 21.g3 Nf3 22.Nf3 ef3 23.Rf3 Bf5 24.Qf2 Be4 25.Nb7 Qe7 26.Bc3 Qb7 27.g4 Nf6 28.Rg3 Nh7 29.h4 Qe7 30.Rh3 f5 31.g5 hg5 32.hg5 Kf7 33.Rh7 Qe6 34.Bh5 Kf8 35.Be8 Qe8 36.Rh8 1–0. A_VB – yesfayaz, lichess.org, 2018.

5.c4 0-0

6.a3 a6 7.d4 ed4 Black gets the initiative 8.Bd4 c5 9.bc6 Nc6 10.c5 (10.Nf3 dc4 11.Bc4 Nd4 12.Nd4 Bg4–/+) 10...Bc5 11.Bc5 Qa5 12.Nd2 Qc5 13.Ne2 Qa5 14.Qc2 Re8 15.Qc3 (15.Qb2 Bf5–+) 15...Qc3 16.Nc3 d4 17.Nd1 Bf5 18.Rc1 de3 19.Ne3 Nd5 20.Ndc4 Rad8 21.Be2 Nf4 22.Kf1 Bg6 Threatening Nd4 23.Re1 (23.Bf3 Nd4 24.Nb2 Nf3 25.gf3 Rd2–+) 23...Ne2 24.Ke2 Nd4 25.Kd2 Nc2 26.Kc3 Ne1 27.Re1 Rd3 28.Kb4 f5 29.Nc2 Rc8 30.Ne5 Rd2 (30...Rc2?! 31.Nd3 Bf7 32.Rc1 Rc1 33.Nc1–/+) 31.Ng6 hg6 (31...Rcc2?! 32.Ne7 Kf7 33.Nf5 Rf2 34.Nd6 Kg6 35.Re6 Rf6 36.Rf6 Kf6 37.g3–+; 31...Rdc2?! 32.Ne7 Kf7 33.Nc8 Rc8 34.Ka5–/+) 32.Ne3 Rb2 33.Ka4 b6 34.Rd1 f4 35.Nd5 Rc4 36.Nb4 Rc5 37.Rd5 Rb4! 38.Kb4 (38.ab4 Rd5) 38...Rd5 39.Kc3 Rh5 40.a4 (40.h3 Rg5 41.Kd3 Rg2–+) 40...Rh2 41.g3 Rf2 42.gf4 Rf4 (42...Rf4 43.Kd3 Ra4–+) 0–1. Pierred (2145) – Badastronaut (2415), internet, 2005.

6.a3 dc4 7.Bc4 a6 8.d4 ed4 9.Bd4 ab5 10.Bb5=+.

6.a3 c6 7.d4 ed4 (7...Bg4 8.Nf3 e4 9.h3–/+) 8.Bd4 (8.Qd4 c5 9.Qh4 Nbd7=+) 8...dc4 (8...c5 9.Bc3 Be6 10.cd5 Bd5 11.Nf3–/+) 9.Bc4 cb5 10.Bb5 Qa5 (10...Nc6 11.Nf3=+) 11.Nc3 Ne4 (11...Ba3? 12.Qb3+–) 12.Nge2 (12.Qa4 Qa4 13.Ba4 Nc3 14.Bc3 Nc6=) 12...Nc3 (12...Nc6!?=+) 13.Bc3= Qb5 14.Qd6 Nc6 15.a4 (15.Rc1 Bg4 16.Nf4 Rfd8–+) 15...Qg5 (15...Qa6 16.Qg3 f6 17.e4=) 16.Qg3 Qg3 ½–½. Van Rooijen,Peter (1715) – Stadler,Pavel, SI–2003–0-00002, 2003.

6.a3 e4 7.Nc3 (7.cd5 Nd5 8.d3 Qh4=+) 7...Bg4 (7...dc4 8.Bc4 a6 9.f3–/+) 8.Qa4 (8.f3 ef3 9.Nf3 dc4 10.Bc4 a6=+) 8...c6 (8...dc4 9.f3 Bf5 10.Bc4=+) 9.d4 (9.f3 Bf5=+) 9...Re8 (9...dc4 10.Bc4 a6 11.Rb1=+) 10.c5=+ Bf8 (10...Be7 11.Be2=+) 11.Be2 (11.h3 Be6=) 11...a6 (11...Be7 12.Rb1=) 12.b6 (12.bc6 Nc6 13.Bg4 Ng4=) 12...Nbd7 13.h3 Bf5 14.Qa5 h6 15.Bd1 Qe7 16.Nge2 Rad8 17.Nf4 g5 18.Nfe2 Bg7 19.Nc1 Nf8 20.Be2 Ne6 21.Nb3 Bg6 22.Nd2 Bh5 23.Ba6?? ba6 24.Qa6 Ra8 25.Qf1 Bg6 26.g4 h5 27.Qe2 hg4 28.hg4–/+ Rab8 29.a4=+ Ra8 30.a5 Reb8 31.a6 Re8 32.b7 Rad8 33.Nb5 cb5–+ 34.Qb5 Rb8 35.Qe2 Bf8 36.0-0-0? Bg7 37.Kb1 Qd7 38.Rc1 Nc7 39.c6 Qg4 40.Qg4= Ng4 41.a7 Rbd8 42.Rhf1 Bf6 43.Ba3 Bd4 44.Bd6 Be5 45.Be5 Ne5–/+ 46.Nb3 d4 47.Nd4= Nd3 48.Rc2 f6 49.Rc4 Bf7 50.Ra4 Nc5 51.Ra5 Bc4 52.Rc1 Bd3 53.Kb2 N5a6 54.Rca1 Bc4 55.Kc3+– Rd4?? 56.Kd4 Be2 57.Ra6! Nb5 58.Kc5 Na7 59.Ra7 Re5 60.Kd6 Rb5 61.Ra8 Kg7 62.b8Q Rb8 63.Rb8 Bf3 (63...Bg4 64.Ra7 Kg6 65.c7+–) 1–0. NN – REXChess, March, 1994.

6.a3 Bg4 7.Be2 Be2 8.Qe2 dc4 9.Qc4–/+.

6.a4 c6 7.Nf3 Re8 8.Be2 e4 9.Nd4 c5 10.Nc2 dc4 11.Bc4 Bg4 12.Be2 Bf5 (12...Be2 13.Qe2 Nbd7 14.f4=+) 13.Nc3 b6 (13...Be5 14.0-0-/+) 14.Na3 (14.d4 Be6=) 14...Nbd7 (14...Bc7 15.Nc4=+) 15.Nc4 (15.g4 Be6 16.g5 Nd5 17.Ne4 Be7=) 15...Bc7 16.h3 (16.0-0 Ne5 17.Ne5 Be5=+) 16...Ne5 17.Ne5 Be5 18.Qb3 Be6 19.Bc4 (19.Qc2 Qd7=+) 19...Qd6 20.Be6 Re6 (worse 20...fe6 21.Qc2=) 21.0-0-0 (21.Qc2 Qd7-/+) 21...Rd8 (21...a6 22.Qc4-/+) 22.Qc4 Bc3 (22...Qd7 23.f4 ef3 24.gf3-/+) 23.Qc3 (23.dc3 Qe7=+) 23...c4 (23...Qd5 24.Qc2-/+) 24.Kb1 (24.Qc4 Re7 25.Kb1 Rc7=+) 24...Qc5-/+ 25.Rc1 Rc8 26.Rc2 Re7?? (26...Qf5!? 27.Rf1 Qg6-/+) 27.Rhc1 (better 27.Ba3 Qe5 28.Rhc1 Qc3 29.Rc3+/-) 27...Rec7=+ 28.g4 h6 (28...Qd6 29.g5 Ne8 30.Ba3=+) 29.h4 (better 29.Qa3 Qg5 30.Qd6=+) 29...Kf8?? (better 29...Ne8!?-/+) 30.Rg1 (30.Ba3 Ng4 31.Bc5 Rc5+-) 30...Ne8?? (better 30...Qd5+=) 31.Ba3+- Nd6 32.Bc5 Rc5 33.g5 h5 34.g6 f6 35.f3! a6 (35...ef3 36.Rf1 Decoy) 36.fe4 (better 36.ba6 ef3 37.Rf1 f2+-) 36...Ne4 (36...ab5 37.d4 cd3 38.Qd3 Ne8 39.Rc5 Rc5+-) 37.Qd4 Re5 (37...Re8 38.ba6 f5 39.a7+-) 38.Rf1 (38.Qd7 Nd6 39.Qd6 Re7 40.ba6 b5 41.ab5 Ke8+-) 38...c3 (38...Rcc5+-) 39.Qe5 ab5 40.d3 (40.Qe4 b4 41.Rf4 Rb8 42.Qd5 Ke7 43.Re4 Kf8 44.Qf7) 40...Nd2 41.Rd2! cd2 42.Qd6 (better 42.Qe6 Rc7+-) 42...Ke8 43.Rd1 Rd8 44.Qe6 Kf8 45.Qf7 1-0. BeepBeepImAJeep (2635) - TheRigos (2670), lichess.org, 2019.

6.a4 Bf5 7.Nf3 Nbd7 8.Be2 Qe7 9.cd5 Nd5 10.0-0 e4 11.Nd4 Qe5 12.g3 Bh3 13.f4 ef3 (13...Qe7 14.Rf2=+) 14.Rf3= N7f6 15.Na3 Qg5 16.Nc4 Bc5 17.Nb3 Be7 18.Nba5 a6 (18...Rfb8 19.d3=+) 19.Nb7 ab5 20.ab5 Bg4 21.Ra8 Ra8 22.Rf1 Bh3 23.Rf3 h5 (23...Bg4 24.h4 Qh5 25.Rf2 Be2 26.Qe2= (worse 26.Re2 Qg4 27.Bd4 Rb8-/+)) 24.Nba5 Nb4 (24...Bg4 25.Rf1 Bh3 26.Rf2=) 25.Be5+/- Nfd5 26.Nb3 Bf6 (26...Bg4 27.Rf1+/-) 27.Bf6 Nf6 28.Nd4 Ne4 29.b6 (better 29.Qe1!? Nd5 30.Bd3+-) 29...cb6 30.Qb1 Qe7 31.Nf5 (31.Nb6? Nd2 32.Qe1 Ra2-+) 31...Qe6 32.Nd4 Qe7 33.Nf5 (33.Nb6? Nd2 34.Qe1 Ra2-+) 33...Qe6 34.Nd4 Qe8 (better 34...Qe7!?=) 35.Qb4+/- Ra1 36.Rf1 Bf1 37.Bf1 Qc8 38.Qb2 (38.Nb6? Qh3 39.Qc4 Nd2 40.Qc8 Qc8 41.Nc8 Nf1-+ (41...Rf1?! 42.Kg2-+)) 38...Rf1 39.Kf1 Qc4 40.Ke1 Nc5 41.Qb6 Nd3 (41...Qc1 42.Ke2 Qc4 43.Kd1 Qf1 44.Kc2 Qd3 45.Kc1 Qf1 46.Kc2 Qd3 47.Kd1 Qf1 48.Kc2=) 42.Ke2 (42.Kf1 Nf4 43.Kf2 Nd3 44.Kg2 Ne1 45.Kg1 Qc1 46.Qd8 Kh7=) 42...Nf4 (better 42...Nc5!? 43.Kd1 Qf1 44.Kc2 Qd3 45.Kc1 Qf1 46.Kc2 Qd3 47.Kd1 Qf1 48.Kc2=) 43.Kf3+/- Qf1 44.Ke4 Nd3 45.Qd8 Kh7 46.Qc8 (46.Qd5!? g6 47.Nf3 Nf2 48.Ke5+/-) 46...Nf2+= 47.Kd5 Qh1 48.Kd6 Qh2 49.Qf5 Kh8 50.Ke7 Ng4 51.Qf7 Qd2 52.Qe8 Kh7 53.Qh5 Nh6 54.Kd7 (better 54.Qf3+-) 54...Qe3= 55.Ne6 Qd3 56.Ke7 Qa3 57.Kd7 Qa4 58.Kd8 Qa8 59.Ke7 Qb7 60.Kd6 Qb8 61.Kd7 Qb7 ½-½. marekt (2215) - sergejstrashni (2200), gameknot.com, 2021.

6.Qb3 dc4 7.Bc4 a6 8.Nc3 Nbd7 9.a4 (9.Nf3 e4 10.Nd4 ab5 11.Ndb5 Be7–/+) 9...e4 10.Qc2 ab5 11.Nb5 Be5 12.Ne2 (12.d4 ed3 13.Bd3 Bb2 14.Qb2 c6–/+) 12...Bb2–/+ 13.Qb2 c6 14.Nd6 Qc7 15.Nc8 Rfc8 16.Ng3 (16.d4 ed3 17.Bd3 Qa5 18.Qc3 b5–/+) 16...Rd8 17.Qc2 b5 18.Be2 Qa5 (18...ba4 19.Ra4 Ra4 20.Qa4=+) 19.0-0 ba4 20.Ne4 Ne4 21.Qe4 Qd2 22.Bf3 Qa5 23.Ra3 (23.Qc6 Ne5 24.Qe4 Nf3 25.Qf3 a3=+) 23...Nc5 24.Qc4 (24.Qc6?? Rac8 25.Ra4 Na4–+) 24...Qb6 25.Rc1 Nb3 26.Rb1 (26.Rf1 Nd2 27.Qc6 Qb4=) 26...Nd2 27.Qf7 (27.Rb6?? Nc4 28.Rc6 Na3–+) 27...Kf7 28.Rb6 Rab8 29.Rb8 Rb8 (< 29...Nf3 30.gf3 Rb8 31.Ra4+=) 30.h4 Nf3 31.gf3 Ra8 32.Kg2 (32.f4 Ke6–/+) 32...Ke6 33.f4 Kd5 34.Kf3 Kc4 (35.Ke2 Kb4–+) 0–1. Zylla,Johannes (2135) – Hoch,Hubertus (2165), BdF T, 2004.

6.Qb3 dc4 7.Bc4 c6 8.d4 cb5 9.Bb5–/+.

6.Qb3 Be6 7.d4 (7.Nc3 dc4 8.Bc4 Bc4 9.Qc4 Nbd7=+) 7...ed4 8.Bd4 c5 9.Bb2 Nbd7 10.Nf3 Re8 11.Be2 dc4 12.Bc4 Bc4 13.Qc4 Qc7 14.Nbd2 Ne5 (14...Be5 15.Be5 Ne5 16.Ne5 Re5 17.0-0=) 15.Ne5 (15.Be5 Be5 16.Rc1 Bd6=) 15...Be5 16.Be5 Re5 17.0-0 Rd8 18.Nf3 Red5 19.h3 b6 20.a4 Qe7 21.Ng5?? (better is 21.a5=) 21...Rg5–+ 22.Rfe1 (22.Rfd1 Rgd5 23.Rd5 Rd5–+) 22...Qe4 23.Qe4 Ne4 24.Red1 (24.Rac1 Nd2 25.Kh2 c4–+) 24...Rgd5 25.Rd5 Rd5 26.f3 Nc3 27.Kf2 (27.e4 Rd4 28.Ra3 Na4–+) 27...Rd2 28.Kg3 Na2 (29.Kf4 Rg2–+) 0–1. Guenther,Klaus – Kuhlmann,AEJ, corr ICCF TT–4–90–12, 1990.

6.Qc2 c6 7.cd5 (7.c5 Bc7=+) 7...Nd5 (7...cd5 8.Nf3 Qe7 9.Nc3=+) 8.Nc3 (8.Nf3 Re8=+) 8...Be6 (8...Nb4 9.Qb1=+) 9.Nf3=+ Nd7 (9...Nb4 10.Qb1=+) 10.a3 (10.Ne4!? Nb4 11.Qc3=) 10...Rc8–/+ 11.bc6 Rc6 12.Bb5 Rc5 (12...Rc8 13.0-0–/+) 13.Rb1 (13.d4 ed4 14.Nd4 Nc3 15.Bc3 Be5=+) 13...Qe7 (13...a6 14.Bd3 f5 15.e4–/+) 14.0-0 (14.d4 ed4 15.Nd4 Nc3 16.Bc3 Rfc8–/+) 14...a6 (14...Rfc8 15.Bd3 f5 16.e4=+) 15.Be2 (15.Bd3 f5 16.e4 Nc3 17.Bc3 Nf6=) 15...b5 (15...Rfc8 16.Bd3 h6 17.Rfc1–/+) 16.Rfd1 (16.d4 Rc7 17.Nd5 Bd5–/+ (17...Rc2?! 18.Ne7 Be7 19.Bd3+=)) 16...Rfc8–/+ 17.Rbc1 N7b6 18.Qb1 Nc3 19.Rc3 Rc3 20.Bc3 f6 21.Bd3 g6 22.Ba5 (22.Bb4 Nd5=+) 22...Nc4 (22...Rb8 23.Bb4 Nc4 24.Bc4 bc4 25.Qe4–/+) 23.Bc4 Rc4 24.d4 ed4 (25.Nd4 Bg4–/+) 0–1. Schreber,Daniel Paul – Jacewicz,Grzegorz, corr or01–010 E–mail, 2001.

6.Qc2 Nbd7 7.d4 dc4 8.Bc4 ed4 9.Bd4=+.

6.Qc2 Nbd7 7.Nf3 Qe7 8.Be2 dc4 9.Bc4 e4 10.Nd4 Ne5 11.Be2 Re8 12.Nc3 Ng6 13.d3 ed3 14.Bd3 Nf4 15.Bf1 N6d5 (15...Rd8 16.a3=+) 16.Nd5= Nd5 17.Be2 (17.Bc4 Nb6 18.Bd3 Qh4=) 17...Bb4 (17...Qh4 18.g3 Bb4 19.Kf1 Bh3 20.Kg1=+) 18.Kf1= Bd7 19.Nf5? (better is 19.Bf3 Be6 20.Rd1=) 19...Bf5–/+ 20.Qf5 Qe3! 21.Qg4 (21.fe3 Ne3) 21...Qh6 (21...Bc3!? 22.Rd1 Bb2 23.Rd5 Qa3–+) 22.Bf3 Bc3 23.Bc3 Nc3 24.Bb7 Qd2 25.g3 Rad8 (25...Rab8 26.Bc6 Re6 27.Kg2–/+) 26.Bc6 (26.Kg2!?=+) 26...Re2 27.Qf4 Qf4 28.gf4 Rdd2 (28...Rb2 29.a4–/+) 29.Kg2 Rf2 30.Kg3 g6 31.a4 Rfe2 32.Rhe1 (better is 32.Rae1!?–/+) 32...Rd3–+ 33.Kg4 Rh2 34.f5?! (34.Rh1 Rh1 35.Rh1 f5 36.Kg5 Kg7–+) 34...gf5 (34...Ne2 35.Re2 Re2 36.Kf4–+) 35.Kf5 Rf2 36.Kg4 Ne2 37.Rad1 (37.Re2 Re2 38.Kf4–+) 37...Rg3 38.Kh4 Rh2 0–1. Palmi,Herbert (1945) – Schmidt,Anton (2075), Regionalliga SO, 2004.

6.Nc3 d4 7.Na4 A) 7...c5 A1) 8.Qc2 Qa5 (8...a6 9.Be2 ab5 10.cb5 Nbd7 11.Bd1 Qa5 12.Rb1 Qb5) 9.Be2 a6 10.f4 ef4 11.ed4 Nbd7 12.dc5 Nc5; A2) 8.bc6 de3 (8...Nc6 9.c5 Bc7 10.Nf3 de3 11.de3 Ba5 12.Bc3 Bc3) 9.fe3 Nc6 10.Nf3 e4 11.Ng5 h6 12.Bf6 Qf6; A3) 8.Nf3 a6 (8...Qa5 9.Ba3 Nbd7 10.Nh4 g6 11.Be2 a6 12.b6 Ne4) 9.Qc2 Qa5 10.Ne5 Be5 11.Nc5 Re8 12.Nb3 Qd8; B) 7...de3 B1) 8.fe3 e4 (8...Nbd7 9.Be2 e4 10.Nh3 Be5 11.0-0 Bb2 12.Nb2 Ne5) 9.c5 Be7 10.Ne2 a6 11.Nd4 ab5 12.Bb5 c6; B2) 8.de3 Nbd7 (8...Qe7 9.c5 Bc5 10.Nc5 Qc5 11.Nf3 e4 12.Bf6 gf6) 9.Nf3 Bb4 10.Bc3 Qe7 11.Qc2 a6 12.Rb1 Bc3; C) 7...Nbd7 C1) 8.Qc2 Qe7 (8...de3 9.de3 Qe7 10.Nf3 Bb4 11.Bc3 a6 12.Rb1 Bc3) 9.Nf3 de3 10.fe3 e4 11.Nd4 Qe5 12.0-0-0 Nb6; C2) 8.Be2 de3 (8...Nc5 9.ed4 ed4 10.Bd4 Ne6 11.Be3 Be5 12.Nc3 Nf4) 9.fe3 a6 10.Nh3 ab5 11.cb5 Ne4 12.0-0 Ndc5; C3) 8.Nf3 de3 (8...Re8 9.Be2 d3 10.Bd3 e4 11.Bc2 ef3 12.gf3 a6) 9.de3 Bb4 10.Bc3 Qe7 11.Qc2 a6 12.Rb1 Bc3; D) 7...a6 D1) 8.Qc2 ab5 (8...de3 9.fe3 e4 10.Ne2 Nbd7 11.Nd4 ab5 12.cb5 Re8) 9.cb5 g6 10.Nf3 Bf5 11.Qb3 c5 12.bc6 Nc6; D2) 8.Rc1 de3 (8...ab5 9.cb5 Be6 10.Nf3 Ba2 11.Be2 de3 12.de3 Nbd7) 9.fe3 e4 10.Nh3 Ng4 11.Nf2 ab5 12.cb5 Qh4; D3) 8.c5 Be7 (8...ab5 9.Bb5 Be7 10.ed4 Ra5 11.Qb3 Bd7 12.Bd7 Qd7) 9.Nf3 ab5 10.Bb5 Bd7 11.Qb3 Nc6 12.Bc1 e4.

6.Nc3 d4 7.Nd5 Nd5 (7...Nbd7 A) 8.Nf3 Nd5 (8...de3 9.de3 Nd5 10.Qd5 Nf6 11.Qd2 Ne4 12.Qd5 Bf5) 9.cd5 de3 10.de3 Bb4 11.Ke2 Bd6 12.Ke1 e4; B) 8.Be2 Nd5 (8...Nc5 9.Nf6 Qf6 10.ed4 ed4 11.Nf3 Qg6 12.Bd4 Re8) 9.cd5 Nc5 10.ed4 ed4 11.Bd4 Qg5 12.Nf3 Qd5; C) 8.Qc2 de3 (8...Nd5 9.cd5 de3 10.fe3 Qh4 11.g3 Qf6 12.Bg2 Nc5) 9.fe3 Nc5 10.Nf3 Nd5 11.cd5 e4 12.Nd4 Bg4; 7...de3 A) 8.de3 Nbd7 (8...Nd5 9.cd5 Bb4 10.Ke2 Bd6 11.Nf3 Re8 12.Nd2 Nd7 ) 9.Be2 Ne4 10.Nf3 c6 11.Nc3 Bb4 12.Qc2 Qa5; B) 8.Nf6 Qf6 (8...gf6 9.fe3 Nd7 10.Nf3 f5 11.Qc2 e4 12.Qc3 f6) 9.fe3 Qe7 10.Qh5 Nd7 11.Nf3 e4 12.Nd4 Ne5; C) 8.Ne3 Nbd7 (8...e4 9.Be2 a6 10.Nh3 ab5 11.cb5 Bh3 12.gh3 Nbd7) 9.Be2 Nc5 10.Nf3 e4 11.Nd4 Re8 12.Nb3 Na4; 7...Be6 A) 8.Qb3 Nbd7 (8...de3 9.fe3 Nd5 10.cd5 Qh4 11.Kd1 Bg4 12.Be2 Nd7) 9.ed4 ed4 10.Bd4 Bd5 11.cd5 Re8 12.Be2 Qe7; B) 8.Qf3 Bd5 (8...de3 9.Nf6 Qf6 10.fe3 a6 11.Qf6 gf6 12.Nf3 ab5) 9.cd5 Nbd7 10.Ne2 Re8 11.e4 Nc5 12.Ng3 Qd7; C) 8.Nf6 Qf6 (8...gf6 9.Nf3 de3 10.fe3 Nd7 11.Qc2 f5 12.Be2 a6) 9.Qf3 de3 10.fe3 Nd7 11.Qf6 gf6 12.d4 Bb4) 8.cd5 de3 (8...Nd7 9.Nf3–/+ (9.Qc2 Nb6 10.Nf3 Bd7 11.Be2 Nd5 12.0-0 c5) 9...de3 10.de3 Bb4 11.Ke2 Bd6 12.Ke1 e4; 8...Bf5 9.Qf3 Qd7 10.Nh3 e4 11.Qd1 d3 12.f3 Qb5) 9.fe3 (9.de3 Bb4 10.Ke2 Nd7+= (10...Bf5 11.Nf3 Nd7 12.Ne5 Ne5) 11.Nf3 Bd6 12.Ke1 e4) 9...Qh4–/+ 10.g3 Qe4 11.Qf3 (11.Nf3 Qd5 12.Be2 e4) 11...Qc2 12.Bc3 a6 (12...Nd7–/+) 0–1. Maly,Guenther (1740) – Kleinsorgen,Horst (1740), RSS7E pioneer–9, 2009.

6.Nc3 d4 7.Nce2 A) 7...Nbd7 A1) 8.Qc2 Re8 (8...de3 9.de3 Nc5 10.Rd1 Re8 11.Ba3 Qe7 12.Nc3 g6) 9.Nf3 d3 10.Qd3 e4 11.Qc2 Nc5 12.Ned4 ef3; A2) 8.Nf3 Nc5 (8...Re8 9.Ng3 de3 10.fe3 Nc5 11.Be2 Ng4 12.Qc2 e4) 9.Ng3 Qe8 10.Qb1 Na4 11.Be2 d3 12.Bd1 Nb2; A3) 8.ed4 Re8 (8...ed4 9.Nd4 Re8 10.Be2 Ne5 11.Kf1 Neg4 12.Bg4 Bg4) 9.Nf3 ed4 10.Bd4 Nc5 11.Qc2 a6 12.0-0-0 ab5; B) 7...Re8 B1) 8.Nf3 Nbd7 (8...d3 9.Nc3 e4 10.Nd4 Nbd7 11.h3 Ne5 12.Qb3 c5) 9.ed4 ed4 10.Bd4 a6 11.Be3 ab5 12.cb5 Ne5; B2) 8.Ng3 Nbd7 (8...de3 9.fe3 Nbd7 10.Nh3 Nc5 11.Be2 Bh3 12.gh3 Qd7) 9.Qc2 de3 10.fe3 Nc5 11.Nf3 e4 12.Nd4 Ng4; B3) 8.Qc2 Nbd7 (8...Bc5 9.Ng3 e4 10.ed4 Bd4 11.N1e2 Bc5 12.h3 a6) 9.Ng3 de3 10.fe3 Nc5 11.Nf3 e4 12.Nd4 Ng4; C) 7...c5 C1) 8.Nh3 a6 (8...h6 9.Ng3 Nbd7 10.Bd3 Nb6 11.0-0 e4 12.Ne4 Ne4) 9.Ng3 ab5 10.cb5 Nbd7 11.Ng5 Nd5 12.Nf5 Qg5; C2) 8.Qc2 Qa5 (8...Be6 9.Ng3 a6 10.Nf3 ab5 11.cb5 Nd5 12.Bc4 Nd7) 9.Nf3 Be6 10.Ng5 Nbd7 11.Ng3 a6 12.ba6 Ra6; C3) 8.Ng3 Re8 (8...e4 9.N1e2 Be5 10.ed4 cd4 11.d3 Ng4 12.Ne4 f5) 9.Nh3 e4 10.Nf4 Nbd7 11.Nd5 Nd5 12.cd5 Be5; D) 7...de3 D1) 8.fe3 Nbd7 (8...Bg4 9.Qc2 Nbd7 10.h3 Bh5 11.Ng3 e4 12.N1e2 Be2) 9.Nf3 Nc5 10.Ng3 e4 11.d4 ef3 12.dc5 f2; D2) 8.de3 Nbd7 (8...Ne4 9.Nc3 Bb4 10.Qc2 Nc3 11.Bc3 Bf5 12.Qb2 Bc3) 9.Nf3 e4 10.Nfd4 Ne5 11.Nc3 Bg4 12.f3 ef3.

6.Nc3 Be6 7.d3? (7.cd5 Nd5 8.Nd5 Bd5+=) 7...Nbd7 (better is 7...d4 8.ed4 ed4–+) 8.Nf3–/+ c6 9.a4 h6 10.Be2 Re8 11.0-0 Qc7 (11...dc4 12.dc4 Nc5 13.Qc2+=) 12.Qb3 (better is 12.bc6!? bc6 13.cd5 Nd5 14.Qc2+=) 12...e4 13.Nd4 (13.de4 Nc5 14.Qc2 de4–/+ (worse is 14...dc4 15.Ba3+=; 14...Nfe4?! 15.bc6 bc6 16.cd5 Bd5 17.Nd5 cd5 18.g3=)) 13...Bh2 14.Kh1 Be5 (14...Nc5 15.Ne6 Re6–+ (15...Ne6 16.cd5 Nc5 17.Qa2–/+; 15...fe6?! 16.Qc2–+)) 15.Ne6= fe6 16.d4 Bd6 17.f4 (17.a5!?=) 17...ef3+= 18.gf3 (18.Bf3!? dc4 19.Qc4+=) 18...Nh5–/+ 19.Rg1 (better is 19.Rf2!?–/+) 19...Ng3–+ 20.Kg2 Ne2 (better is 20...Nf5 21.bc6 bc6–+) 21.Ne2–/+ Rf8 (21...c5 22.Kh3–/+) 22.Raf1 (22.c5 Be7 23.Nf4 Rf6+=) 22...Rf6 (22...Qd8!? 23.f4 Qh4–/+) 23.c5+= Be7 24.Kf2 (24.Nf4!?–/+) 24...Raf8 25.Kg2 (better is 25.f4!?–/+) 25...Rg6–+ 26.Kh1?? (26.Kh3 Rg1 27.Ng1 Rf5–+) 26...Rg1 (26...Rf5 27.Rg3 Rg3 28.Rf2 Rh5 29.Rh2 Rg1 30.Kg1 Qh2 31.Kf1 Qh1 32.Ng1 Rh2 33.Qd3 Qg2 34.Ke1 Qg1 35.Qf1 Bh4 36.Kd1 Qf1) 27.Ng1 (27.Kg1 Rf5 28.Nf4 Bg5–+) 27...Rf5 28.Rf2?? (28.f4 e5!–+) 28...Qg3 (better is 28...Rh5 29.Kg2 Rh2 30.Kf1 Rf2 31.Kf2 Qh2 32.Ke1 Qg1 33.Kd2 Qf2 34.Kc1 Bf6–+) 29.Qc2 Rg5 30.Rg2 Rh5 (30...Qh4!? 31.Rh2 Qe1 32.Qf2–+) 31.Rh2 Rh2 32.Qh2 Qh2 33.Kh2 Bf6 34.Ne2? (better is 34.Bc1–+) 34...Nc5! 35.dc5 (35.bc6 bc6 36.Nc3 Nd3–+) 35...Bb2 36.Nd4 (36.e4–+) 36...Bd4 37.ed4 (37.bc6 bc6 38.e4 Kf7–+) 37...Kf7 38.Kg3 Kf6 39.Kg4 (39.f4 Kf5 40.Kf3 a6–+) 39...e5 40.de5 Ke5 41.f4 Ke4 42.f5 d4 43.f6 gf6 0–1. Baer,Cy (1895) – Fares,Rodolpho jr, CiF, 2007.

6.c5 Bc5–/+ 7.Be5 Re8 8.Nf3 Bg4 9.Bb2 c6 (9...a6 10.Qc2 Bd6 11.Nc3–/+) 10.Qb3 (10.Nc3 d4 11.Na4 Bb4–/+) 10...Nbd7 (10...Bf3 11.gf3 a6 12.d4+=) 11.Nc3 (11.Be2 Bd6+=) 11...Bb6 (11...Bf3 12.gf3 a6 13.bc6 bc6 14.Rb1+=) 12.Be2 (12.bc6 bc6 13.Be2 Bf3 14.gf3 Nc5–/+) 12...Nc5 (12...Bf3 13.Bf3 Ne5 14.Be2+=) 13.Qb4 (13.Qc2!?+=) 13...Bf3–/+ 14.gf3 d4 15.Na4 de3 (15...Na4!? 16.Qa4 c5+=) 16.fe3= Na4 17.Qa4 Nd5 (17...Re6 18.Bc4 Ba5 19.0-0 cb5 20.Qb5=) 18.0-0-0 (18.bc6!? bc6 A) 19.Qc6 Qh4 20.Kd1 Ne3 21.de3 Rad8 22.Kc2 Rc8 23.Qc8 Rc8 24.Kb1 Qf2–+ (worse is 24...Be3 25.a4–+); B) 19.Rg1=) 18...Re6 (18...Rc8 19.Kb1+=) 19.Rhg1= g6 20.bc6 (20.Kb1 Rc8=) 20...bc6 (20...Rc6 21.Kb1+=) 21.Rg4 (21.f4 Rb8 22.f5 Re3 23.fg6 hg6 (23...Re2?? 24.gh7 Kf8 25.Rde1+–) 24.Rg6 fg6 25.de3 Be3 26.Kc2 Qe7–/+) 21...Rb8 22.Rc4 Attacks the isolani on c6 22...Qe8 23.Re4 Bc5 (23...Bc7 24.Re6 Qe6 25.Qd4=) 24.Re6= Qe6 25.Qe4 Qc8 26.Bc4 Be7 27.Bd5? (better is 27.Rg1=) 27...cd5–+ 28.Qc2 Qb7 (better is 28...Qa6 29.a4 Rc8–+) 29.d4?? (better is 29.Qb3 Bb4 30.Kb1–/+) 29...Rc8–+ 30.Bc3 Ba3 31.Kd2 Qc7 (better is 31...Bb4 32.Rc1 Rc3 33.Qc3 Bc3 34.Rc3 Qb1–+) 32.f4 (32.Qb3 Qh2 33.Kd3 Qd6–/+) 32...Qd7 (32...Bb4 33.Rc1 Qa5 34.Qb3 Bc3 35.Rc3 Rc3 36.Qc3 Qa2 37.Kd3 Qh2 38.Qa5–/+) 33.Rb1 (33.Qb3 Bf8–/+) 33...Qg4 (33...Qh3!?–/+) 34.Rb3+= Be7 35.Qd3 (35.Qd1 Qh3+=) 35...Bh4 (35...h6 36.a3+=) 36.Qe2 (36.Qf1 h6+=) 36...Qf5 (36...Qg1 37.a3+=) 37.Qd3 (37.Qf3 Qd7+=) 37...Qh3 (37...Be1 38.Ke2 Bc3 39.Rc3 Qh5 40.Ke1 Rc3 41.Qc3 Qh2 42.Qa5–/+) 38.Qe2+= Re8 (38...Qd7 39.Bb4+=) 39.Rb5 (39.Bb4 a5 40.Bc5 a4=) 39...Qd7+= 40.Kd3?? (better is 40.a4+=) 40...Qb5–+ (40...Qb5 41.Kd2 Qb1–+) 0–1. Gerigk,Wolf – Harm,Joerg (2235), Oberliga Nord N, 2004.

6.d3 Bb4 7.Bc3 Bc3 8.Nc3-/+.

6.d3 Bg4 7.Be2=+ Be2 8.Ne2 Bb4 9.Bc3 Bc3 10.Nbc3 dc4 (10...d4 11.ed4 ed4 12.Ne4=+) 11.dc4= Qe7 12.0-0 Nbd7 13.Qc2 Nb6 14.Ne4 Rfd8 15.Rfd1 a6 16.Nf6 Qf6 17.a4 ab5 18.cb5 Qe7 19.a5 Nd5 (19...Rd1 20.Qd1 Nc4+=) 20.a6 (better 20.Ng3!?+=) 20...ba6=+ 21.ba6 Nb4 22.Qc4 (22.Rd8 Qd8 23.Qe4 Ra6 24.Qe5 Ra1 25.Qa1 c5=+) 22...Rd1 23.Rd1 Ra6 24.Ng3 g6 25.Ne4 Rc6 26.Qb5 Rb6 27.Qa5 f5 28.Nc5 Rd6 29.Rb1 Nc6 30.Qa8 Kg7 31.h3 e4 32.Qa1 Kg8 33.Nb7 Rd2 34.Qc3 (34.Qa4 Ne5-/+) 34...Qd7 35.Qc4 Kg7 36.Nc5 (36.Rb5 Ne7-/+) 36...Rd1-+ 37.Rd1 Qd1 38.Kh2 Qd6 39.g3 (39.Kg1!? Kf6-/+) 39...Ne5 40.Ne6? (better 40.Qc3-+) 40...Kf6 (40...Kh6!? 41.Qc7 Qe6 42.Kg2-+) 41.Qc7 Qe6 42.Qh7 Nf3 43.Kg2 Qf7 44.Qh8 Qg7 45.Qd8 Qe7 46.Qh8 Ke6 47.Qb8 Qd6 48.Qg8 Kd7 49.Qf7 Kc6 50.Qc4 Qc5 (better 50...Kb6-+) 51.Qe6 Qd6 52.Qc4 Kd7 53.Qf7 Kc8 54.Qe8 Kb7 55.Qb5 Qb6 (55...Kc7 56.Qc4 Kb6 57.h4-+) 56.Qd7 Qc7 (56...Kb8!? 57.Qe8 Ka7 58.Qd7 Qb7 59.Qd6-+) 57.Qb5 Kc8 (57...Ka7!? 58.Qa4 Kb6 59.Qb3 Ka5 60.Qa2 Kb5 61.Qb3 Kc5 62.Qc3 Kd6 63.Qf6 Kd5 64.Qg6-+) 58.Qe8-/+ Kb7 59.Qg6 (59.Qb5 Ka7 60.Qa4 Kb6 61.Qb3 Ka5 62.Qa2 Kb5 63.Qb3 Kc5 64.Qc3 Kd6 65.Qf6 Kd5 66.Qg6-+) 59...Qe5 60.Qf7 (60.h4 Ne1 61.Kg1 Kc7-/+) 60...Kc6 61.Qc4 Kd6 62.Qb4 Ke6 63.Qb6 Kf7 64.Qb7 Kg6 65.Qd7 Ng5 (65...Ne1 66.Kf1 Nd3 67.Qc6 Kg5 68.Kg2-+) 66.h4 Nf7 (66...Nf3 67.Kh3-+) 67.h5 (67.g4!? fg4 68.Qg4 Kf6 69.f3 ef3 70.Qf3 Ke7 71.Qb7 Kf8 72.Qc8 Kg7 73.Qg4 Kh7 74.Kf3=+) 67...Kg7 68.Qc6 Qf6 69.h6 Nh6 70.Qc7 Nf7 71.Qc5 Qe5 72.Qa7 Kg6 73.Qb6 Kg5 74.Qb7 Kg6 75.Qc6?? (75.Qb6 Qf6 76.Qc5-+) 75...Qd6-+ 76.Qe8 Qf6 77.Qg8 Qg7 78.Qe8 Kg5 79.Qe7 Kg6 (79...Qf6 80.Qc5-+) 80.Qe8 Qh7 81.Qe6 Kg7 (81...Kg5 82.Qd7-+) 82.Qe7 Qh5 83.Qe6 Qf3 84.Kh3 (84.Kf1 Qd1 85.Kg2 Nd6-+) 84...Qg4 (84...Qh1) 85.Kg2-+ Qf3 86.Kg1?? (86.Kh3 Qh1) 86...Qg4 87.Kg2 Qg6 88.Qe7 Qd6 89.Qh4 Nh6 (89...Kg6 90.g4 fg4 91.Qg4 Ng5 92.Kf1-+) 90.Qg5 Qg6 91.Qe7 Nf7 92.Qe8 (92.Qd7 Qf6-+) 92...Nd6 (92...Qd6 93.Qc8 Kf6 94.g4 fg4 95.Qg4-+) 93.Qe7 Kh6?? (better 93...Kg8-+) 94.Qh4= Kg7 95.Qe7 Nf7 96.Qe8 Qd6 97.Qc8 Qd5 98.Qe8 Ng5 99.Qe7 Nf7 100.Qe8 Qd6 101.Qc8 Qh6 (101...Kf6 102.Kf1-+) 102.Qe8? (better 102.Qf5 Ng5 103.Qd7 Kg6 104.Qd6 Kh7 105.Qd7 Qg7 106.Qg7 Kg7 107.g4-+) 102...Qf6 103.Qc8 Ne5 104.Qc7 Kg6 105.Qc8 Nd3 106.Qg8 Qg7 107.Qe8 Qf7 108.Qc6 Kg7 109.Qb5 Qe6 110.Qb7 Kg6 111.Qc7 (111.Qa8 Kf7-+) 111...Qa2 112.Qd6 Kh5 (112...Kh5 113.g4 fg4-+) 0-1. banjoband (2040) - shelajev (2070), Rated Blitz game, lichess.org, 2014.

6.d4 Bb4 7.Bc3 Bc3 8.Nc3 ed4 9.Qd4 dc4 10.Qd8 Rd8 11.Bc4 c6 12.Nf3 cb5 13.Nb5 Nc6 14.Nbd4 Nd4 15.Nd4 (< 15.ed4 Bg4 16.Rd1 Rac8–/+) 15...Bd7 16.Ke2 a6 17.a4 h6 (17...Rac8 18.Rhc1+=) 18.a5 Bg4 (18...Rac8 19.Rhc1+=) 19.f3+/– Bh5 20.Rhd1 Nd5 (20...Bg6 21.e4+=) 21.Rac1 Bg6 22.e4 Ne7 (22...Nf4 23.Kf2+/–) 23.Ke3 Rac8 24.Bd3 Rc1 25.Rc1 Rc8 (25...Rd7 26.g3+/–) 26.Rc8 Nc8 27.f4 f6 28.Ne6 Nd6 29.Kd4 Be8 (29...h5 30.Kd5 Nf7 31.Kc5+–) 30.Kc5 (30.e5 Nb5 31.Kc5 Bc6+–) 30...Nf7 (30...Bb5 31.e5 fe5 32.Bb5 Nb5 33.fe5 Kf7 34.Nd8 Ke7 35.Nb7 Na3+–) 31.Kb6 (31...g5 32.Kb7 gf4 33.Ka6+–) 1–0. Sternik,Ryszard – Gross,Gerald, internet, 2005.

6.d4 ed4 7.Qd4 Bb4 8.Bc3 c5 9.Qd3 Bc3 10.Nc3 d4 (10...Qa5 11.cd5 Nd5 12.Rc1=+) 11.ed4= cd4 12.0-0-0 Qa5 13.Qd4 Qa3 (13...a6 14.Qd2=+) 14.Kd2 Re8 15.Be2 (15.Rc1 Bf5 16.Bd3 Qa5=+) 15...Bf5 16.Ke1 (16.f3 a6=+) 16...Bc2–/+ 17.Rd2 Qc1 18.Nd1 Ne4 19.Qe3 Qd2 20.Qd2 Nd2 21.Kd2 Bd1 22.Bd1 Rd8 (22...a6 23.a4–/+) 23.Kc1 (23.Ke1 a6 24.a4 ab5 25.cb5 Nd7–+) 23...a6 24.Bb3 Nd7 25.Nh3 (25.ba6 Ra6 26.Nf3 Nc5–+) 25...ab5 26.cb5 Nc5 27.Kc2 h6 (27...Rac8 28.Kb2–+) 28.Re1 Rac8 29.Kb1 Nb3 30.ab3 Rc5 31.Rc1 Rb5 32.Kb2 Kh7 33.Rc3 g5 34.Rc7 Kg6 35.Kc3 Rd1 (36.Kb2 Rh1–+) 0–1. Van Rooijen,Peter (1700) – Leisebein,Peter (2135), KO–05 TSC, 2002.

6.d4 ed4 7.Qd4 Re8 8.cd5 Be5=+.

6.d4 ed4 7.Bd4 c5 8.Bb2 d4 (8...Be6 9.cd5 Nd5 10.Nf3=+) 9.ed4= cd4 10.a3? (better 10.Qd4 Re8 11.Be2=) 10...Qa5-+ 11.Qd2 (11.Bc3 dc3 12.Qd6 Re8 13.Ne2 c2 14.Nd2-+) 11...Qd2 (better 11...Re8 12.Be2 Qd2 13.Nd2 d3-+) 12.Nd2=+ Re8 13.Kd1 Bf5 (13...Ng4 14.Nh3 A) worse 14...Bh2 15.g3+= (15.Bd4?! Rd8 16.Bc3 Bd6=+); B) 14...Rd8=+) 14.Bd4+= Nfd7 15.f3 (15.g3 a6+=) 15...Nc5 (15...a6 16.g4 Bg6 17.h4=) 16.g4+= Bg6 (16...Be6 17.Nh3+=) 17.h4 (17.Bc5 Bc5 18.f4 f5+/-) 17...h6 (17...Ne6!? 18.Ba7 Ra7=) 18.h5 Bh7 19.Nh3 (19.Bc5 Bc5 20.f4 Nd7=) 19...a6 (19...Ne6 20.Bc3=) 20.Nf2 (20.g5 Ne6 21.Be3 Ng5 22.Bg5 hg5 23.Ng5 ab5 24.cb5 Ra3 25.Ra3 Ba3+=) 20...ab5 (20...Nbd7 21.Bh3=) 21.cb5 Ne6 (21...Rd8 22.Bc4=) 22.Bb2+= Ng5 (22...Nf4 23.Nfe4 Be7 24.Nc4+=) 23.Bc4 (better 23.Bd3!?+/-) 23...Bf4= 24.Re1 (24.Nd3 Bd2 25.Kd2 Ra4=) 24...Nd7 (24...Rd8 25.Bc3 Nf3 26.Re2=+) 25.Nfe4 (better 25.Re8 Re8 26.Bc3=) 25...Bd2?? (better 25...Nb6 26.Bf7 Kf7 27.Ng5 hg5 28.Re8 Re8-+ (28...Ke8?! 29.Ne4-+)) 26.Nd2+/- Nc5 27.Re8 Re8 28.Bd4 (28.Bd4 Nd3 29.b6+=) 1-0. zembelek (2100) - tarn (1985), Rated Blitz game, lichess.org, 2013.

6.d4 Ne4 7.a3 dc4 8.Bc4 Qh4=.

6.Nf3 Qe7 7.d4 (7.c5 Bc5 8.Be5 a6=+) 7...ed4 8.Qd4 Be6 9.Nc3 (9.cd5 Bd5 10.Nc3 Bf3 11.gf3 c5 12.bc6 bc6=) 9...c5 10.Qh4 d4 11.Ne4 Ne4 12.Qe4 f5 13.Qc2 (13.Qh4 Qh4 14.Nh4 de3 15.fe3 a6=+) 13...de3–/+ 14.fe3 Nd7 (14...a6!?–/+) 15.Bd3=+ Nf6 16.0-0 Ng4 (16...Bd7 17.Rae1 Ne4 18.Nd2=) 17.Rae1 Rae8 (17...Rad8 18.g3=) 18.h3 Nh6 19.Qc3 (19.e4 Bg3 20.Re2 f4+=) 19...Bg3 20.Re2 Bc8 (20...Qf7 21.e4 Qc7 22.Ng5+=) 21.e4+= f4 22.e5 (22.a4 Be6+=) 22...Be6 23.Be4 (23.Bc1 Rd8=) 23...Nf5 24.Bc1 Rd8 25.Rd2 Rd2 26.Bd2 b6 27.Qc1 g6 28.Bd5 Ng7 29.Be1+= Nf5 30.Bd2 Ng7 31.Be1 Nf5= 32.Bd2 (32.Bg3!? Ng3 33.Rf2+=) ½–½. Schulze,Harald (2125) – Sommer,Matthias (2115), Regionalliga NO, 2002.

6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 e4 9.Be2 c6 10.Nc3 Qc7 11.0-0 (better is 11.cd5!? cd5 12.Qb3=) 11...Bh2 12.Kh1 Bd6 13.g3 (13.cd5 cd5 14.d3 Rd8–/+) 13...Qd7 14.Kg2 h6 15.d3 Re8 16.bc6 bc6 17.cd5 cd5 18.de4 de4 19.Bb5 Nc6 20.Nd5 Nd5? (better is 20...Qb7 21.Nf6 gf6+/–) 21.Qd5+– Rac8 22.Rac1 Rc7 23.Rfd1 Re6 (23...Rec8 24.Qd6 Qd6 25.Rd6+–) 24.Bc6 Rc6 (24...Qe7+–) 25.Qc6 (25.Qc6 Qe7 26.Qd5+–) 1–0. Tiedemann,Joern (2020) – Baer,Cy (1790), RSS7E easy–114, 2010.

6.cd5 Nd5

7.Qb3 Be6 8.Bc4 c6 9.bc6 bc6 10.e4 Nf4 11.Be6 Ne6 12.Nf3 Na6 13.0-0 (13.Qc4 Nac5=+) 13...Rb8 14.Qc3 (14.Qc2 Nb4 15.Qc4 Nf4=+) 14...Nf4–/+ 15.Kh1 (15.Re1 Nc5 16.Ba3 Ncd3–/+) 15...Nc5=+ 16.Ba3 Ne4 17.Qc6 Ba3 18.Na3 Qd3 19.Rae1 (19.Ne5 Qd4 20.Ng4 Nd3–+) 19...Nf6 (19...Qa3?! 20.Qe4 f6 21.d4=; 19...Nd2?! 20.Nd2 Qa3 21.Nc4 Qa2 22.Ne5=+) 20.Qc3 (20.Qa4 e4 21.Ne5 Qd5–/+) 20...N6d5 21.Qd3 Nd3 22.Re4 f6 23.Ra4 (23.Nc4 Rfc8–/+) 23...Rf7–+ 24.Nc4 (24.Ne1 N5b4–+) 24...Rd7 25.Ne3 Rb2 (25...Nb6 26.Rh4–+) 26.Nd5 Rd5 27.Kg1 (27.Ra7 e4 28.Ra8 Kf7 29.Ra7 Ke6 30.Ra6 Ke7 31.Ra7 Rd7 32.Rd7 Kd7–+) 27...a5 28.h3 (28.a3 Ra2–+) 28...g6 (28...f5 29.a3–+) 29.Rd1 f5 30.Ne1 (30.Kf1 Rdb5 31.g4 e4–+) 30...Ne1 31.Re1 Rdd2 (32.Re5 Rf2 33.Raa5 Rg2 34.Kf1 Rbf2 35.Ke1 Ra2 36.Ra2 Ra2–+) 0–1. Boehnke,Hartmut (2160) – Malyshev,Vladimir Pavlovich (2275), corr ICCF, 2005.

7.Qb3 Nf6 8.d4 Be6 9.Bc4 Bc4 10.Qc4=+.

7.Nc3 Nc3 8.Bc3 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Re8 12.Nf3 e4 13.Ne5 Be6 14.Qa7 Bd5 15.Nc4 Bf8 16.Be2 Nd7 17.0-0 Qg5 18.Bd4 Rc8 19.Ra1 Be7 20.g3 Qf5 21.Kg2 Qe6 22.Rc1 Bb4 23.h3 Rd8 24.Na5 Qe8 25.Bg4 (25.Rc7? Ra8 26.b6 Nf8–+) 25...h5 (25...f5 26.Bf5 Qf8 27.Nb7=) 26.Bd7 (26.Bh5? Ra8 27.Nc6 Bc6 (worse 27...bc6 28.Qc7 cb5 29.Be2–+) 28.bc6 Ra7 29.cd7 Qd7 30.Ba7 b6–+) 26...Rd7 27.Nb7 Bb7? (better 27...Bd2 28.Ra1 Bc4=) 28.Qb7+– Bd2? (28...Qe7!? 29.b6 cb6 30.Qb6 Rd8+–) 29.Ra1+– Kh7 (29...Rd8 30.Qc7 Rc8 31.Qe5 Qe5 32.Be5+–) 30.Qc6 (30.Ra7 Kg6+–) 30...Qe6 31.Qe6 fe6 32.Ra7 Kg6 33.b6 Rd4 34.ed4 cb6 35.Rb7 Ba5 (35...Bc3 36.Rb6 Bd4 37.Re6 Kf5 38.Rd6+–) 36.Kf1 Bc3 37.Rb6 Bd4 38.Re6 Kf5 39.Ra6 g5 (39...e3 40.Ra5 Ke4 41.fe3 Be3 42.Rh5+–) 40.Rh6 Bf6 41.Rh5 Bb2 (41...Kg6 42.g4 Bc3+–) 42.h4 Bf6 (42...Kf6 43.Rg5 Ba3+–) 43.Rg5! (43.Rg5 Bg5 44.hg5+–) 1–0. Silent Move (2115) – U know (1850), redhotpawn.com, 2014.

7.Nc3 Nc3 8.Bc3 a6 9.a4 Nd7 10.ba6 ba6 11.Nf3 e4 12.Nd4 Qg5 13.h4 Qg6 14.h5 Qg5 15.h6 g6 16.Qc2 Bb7 17.Rh3 Ne5 (17...c5 18.Ne2–/+) 18.f4+= ef3 19.Nf3 Nf3 20.gf3 Bg3 21.Ke2 a5 22.d3 Rae8 23.Bd2 Re3! 24.Be3 Re8 25.Qd2 Bf4 26.Kd1 (26.Qb2 Re3 27.Kf2–/+) 26...Re3 (26...Be3?! 27.Qb2 Qe5 28.Qe5 Re5 29.Rb1=) 27.Rb1 f6 (better is 27...Qg1!? 28.Kc2 Re6 (worse is 28...Rf3 29.Rb7 Qc5 30.Qc3 Rf2 31.Be2 Re2 32.Kd1 Qg1 33.Ke2 Qg2 34.Kd1 Qg4 35.Kc2 Qg2 36.Kb1 Qb7 37.Ka1 Bh6 38.Rh6+/–) 29.Qf4 Qf2 30.Kc3 Rc6 31.Qc4 Rc4 32.dc4 f5–+) 28.Rb7= Qg1 29.Kc2? (29.Qa2 Kf8 30.Rb8 Ke7 31.Qg2 Rd3 32.Kc2 Rd2 33.Qd2 Bd2 34.Kd2 Qf1 35.Rh2 Qf3 36.Re2 Kd7 37.Re3 Qg2 38.Ke1 Qh1 39.Ke2 Qh5 40.Rf3 Qh2 41.Kd3 Qh6 42.Rf6 Qh3 43.Ke2 Qg4 44.Ke3–+) 29...Qf1–+ 30.Rh2 Rf3 (30...Qf3 31.Rb8 Kf7 32.Rf2 Qc6 33.Qc3 Qa4 34.Qb3 Qb3 35.Rb3 Bh6 36.Rb5–+) 31.Rb1? (better is 31.Qe2 Qc1 32.Kb3–+) 31...Qb1! 32.Kb1 Bd2 33.Rd2 Rh3 0–1. pcmvr (2810) – tdanecki, net–chess.com, 2010.

7.Nc3 Nc3 8.Bc3 Nd7 9.Qc2 Re8 10.Bd3 g6 11.Nf3 Nc5 12.e4 a6 13.a4 Be6 (13...ab5 14.Bb5 c6 15.Be2–/+) 14.0-0 (14.Be5?? Bb3 15.Qc3 Be5 16.Ne5 Nd3 17.Ke2 Nf4 18.Kf3 Ne6–+) 14...Bb3 15.Qb1 ab5 16.ab5 Ra1 17.Ba1 Qa8 18.b6 c6 19.Bc2 Qa4 20.Bb3 Nb3 21.Qd3 Bf8 22.Be5 Nc5 23.Qd4 Qd4 24.Bd4 (24.Nd4?? Re5 25.f3 Nd3–+) 24...Re4 25.Bc3 (25.g3 Nd7=+) 25...Ra4 26.g3 Ne4 27.Re1 Bc5 28.d4 Nc3 29.dc5 Ne4 30.Ne5 Nc5 31.Rc1 Ne6 32.Kg2 (32.Rd1!? f6 33.Nf3–+) 32...Rb4–+ 33.Nd7 f5 34.Ra1 Kf7 35.Ra7 Nd8 36.Ra8 (36.Ra1 Ke7 37.Rd1 Rb5–+) 36...Ke7 37.Nf8 Rb6 38.Nh7 Ra6 39.Ra6 ba6 40.f4?? (40.Ng5–+) 40...a5 41.Ng5 a4 42.Nf3 a3 43.Nd4 Kd6 44.Nc2 a2 45.Kf3 Kc5 46.Ke3 (46.Ke2 Kc4 47.Kd1 Kc3–+) 46...Kc4 47.Kd2 Ne6 48.Kd1 (48.Na1 Nd4 49.h3 Nb3 50.Kc2 Na1 51.Kb2–+) 48...Nd4 49.Na1 Kc3 50.Kc1 Nb3 (50...Nb3 51.Nb3 Kb3 52.Kd2 a1Q 53.Ke3 c5 54.Kf2 c4 55.h3 c3 56.g4 c2 57.gf5 c1Q 58.Kf3 Qh1 59.Kg4 Qg2 60.Kh4 Qf6) 0–1. Silent Move (2115) – phyrexian (2020), redhotpawn.com, 2012.

7.Nc3 Nc3 8.Bc3 Nd7 9.Qc2 Re8 10.Ne2 Nc5 11.Ng3 a6 12.Bb4 b6 13.a4 ½–½. Heinrich,Olaf (2290) – Schlaeger,Michael (2270), RSX7E–A00–Sokolsky–1, 2008.

7.Bc4 Be6 8.e4 (better is 8.Qb3!? c6 9.bc6 bc6 10.e4=+) 8...Nf4–/+ 9.Bf1 Nd7 10.a4? (10.d4 f5 11.g3 Bb4 12.Bc3 Bc3 13.Nc3 ed4 14.Qd4=) 10...Nc5–+ 11.d3 (11.Qc2 Nb3–+) 11...Ncd3!! 12.Bd3 (12.Qd3 Nd3) 12...Bb4 13.Bc3 Nd3 (13...Qd3?! 14.Qd3 Nd3 15.Ke2 Nc1 16.Kd1–+) 14.Ke2 (14.Kf1 Bc4 15.Qf3 Nb2 16.Ke1–+) 14...Nf4 (15.Ke1 Ng2 16.Kf1 Qd1 17.Kg2 Qg4 18.Kf1 Bc4 19.Ke1 Qe4 20.Kd2 Rfd8 21.Kc1 Bb3 22.Na3 Ba3 23.Ra3 Qc2) 0–1. Neffgen,Dieter – Zuber,Martin, RSS5D easy–1, 2003.

7.e4 Nf4 8.Qf3 a6 9.ba6 Na6 10.g3 Ne6 11.Qc3 Nd4 12.Qc1 (better is 12.Ba6!? Ra6 13.Qd3–+) 12...Nb4 13.Bd4 ed4 0–1. Stasiak,Wiktor – Juan Rodriguez,Francisco Javier, Spain–Poland, 2008.

7.Qf3 Nb4 8.Na3 Be6–/+.

7.Nf3 e4–/+ 8.Qb3 c6 9.Nd4 Nf6 10.Bc4=+.

7.Nf3 e4 8.Qb3 ef3 9.Qd5 fg2 10.Qg2=.

7.Nf3 e4–/+ 8.Qb3 Nf6 (8...c6 9.Nd4 Nf6 10.Bc4+=) 9.Nd4 c5 (9...Nbd7 10.Qc2–/+) 10.bc6+= Nc6 11.Na3 (11.d3 Rb8+=) 11...Na5 (11...Nd4 12.Bd4 Be6 13.Bc4+=) 12.Qd1 Bd7 13.Be2 Rc8 14.Qb1 (14.Nab5 Bc5+=) 14...a6–/+ 15.0-0 b5 (15...Qe7 16.Nb3 Nb3 17.ab3+=) 16.d3+= Qe7 17.Nac2 ed3 18.Bd3 Nc4 19.Nf3 Bg4 (19...Rfd8 20.Ncd4 Rc5 21.Rc1+=) 20.Ncd4 Nb2 21.Qb2 Rfd8 22.h3 Bf3 23.Nf3 Rc5 (23...Bh2 24.Kh2 Rd3 25.Rac1 Qd6 26.Qe5=) 24.a4 Rd5 (24...Bh2 25.Nh2 Rd3 26.ab5 ab5 27.Nf3=) 25.Be2 (25.Rfd1 b4=) 25...Ne4 (25...Rb8 26.ab5 ab5 27.Rfd1=) 26.ab5 ab5 27.Rfc1 (27.Bb5 Rb8 28.Rfb1 Qc7–/+ (28...Rdb5 29.Qb5 Rb5 30.Ra8 Rb8 31.Rab8 Bb8 32.Rb8 Qf8 33.Rf8 Kf8 34.Nd4+/–)) 27...Rb8 28.Qb3 (28.Nd4 Qe5 29.Bf3 b4=) 28...Rc5+= 29.Rc5 Nc5 30.Qd5 Rd8 (30...b4 31.Ra8=) 31.Qf5 (31.Ra8 Bb8 32.Qc6 b4=) 31...b4 32.Bc4 g6 33.Qg4 Nd7 (33...Kg7 34.Nd4 Qe4 35.Qg5+=) 34.g3 (34.Ra7!?+=) 34...Ne5= 35.Ne5 Be5 36.Ra5 (36.Ra4 Rd2=) 36...Bc3 (36...Rd2 37.Qf3 Bb2 38.Kg2=) ½–½. Taulien,Hans_Juergen – Bekemann,Uwe, Remoteschach, 2001.

7.Nf3 e4 8.Nd4 c5 9.Nc3?? Nc3–+ (9...cd4?! 10.Nd5 Qg5 11.Nf4 de3 12.fe3 Bf4 13.ef4 Qf4 14.Qe2–/+) 10.dc3 cd4 11.ed4 Re8 12.g3 Nd7 0–1. Pcmvr – Anne_t, playchess.de, 2004.

7.Nf3 e4–/+ 8.Nd4 c5 9.bc6 Nc6 10.Qb3 Bc7 (10...Nf6 11.d3=+) 11.Nc6 bc6 12.Qa4 Rb8 (12...Bf5 13.Qc6 Rb8 14.Bd4=+) 13.Bd4 c5 14.Bc5 Be5 15.Bd4 Rb4 16.Qc6 Rd4 (16...Bd4 17.ed4 Rd4 18.Qc5–/+) 17.ed4 Bd4 18.Nc3 Nb4 (19.Qa4 Bf2 20.Kd1 Be3 21.Ne4 Qd4–+) 0–1. Van Rooijen,Peter (1745) – Beninsky,Svejen (1710), IECC, 2000.

7.Nf3 e4 8.Nd4 c5 9.bc6 Nc6 10.Nc6 bc6 11.Nc3–/+.

7.Nc3 Be6

8.Nd5 Bd5 9.Qc2 a6 10.e4 Be6 11.Nf3 ab5 12.Bb5 Ra5 13.a4 c6 14.Be2=.

8.Nd5 Bd5 9.Ne2 a6=+.

8.Nd5 Bd5 9.Ne2 c5 10.Nc3 Be6 11.Qf3 Qe7 12.Nd5 Qd7 13.Bc4 Bg4 14.Qe4=.

8.Nd5 Bd5 9.Ne2 Nd7 10.Nc3 Be6 11.Be2 (11.Qf3 Rb8 12.Be2 f5 13.d3 a6 14.ba6+=) 11...f5 (11...Re8 12.Ne4 Be7 13.0-0 Nf6 14.Bf3=) 12.0-0 (12.d4 ed4 13.Qd4 Be5 14.Qd2+=) 12...Nf6 (12...Qh4 13.Qc2 (13.d4+= ed4 14.g3+=) 13...Nc5 14.g3+=) 13.Qa4 (13.d4 e4 14.d5=) 13...Qe7 (13...Qd7 14.d4=) 14.g3 (14.Rfd1=) 1–0. pcmvr (2765) – jcampetella (2645), net–chess.com, 2014.

8.Qf3 c6–/+ 9.Nd5 Bd5 10.e4 Be6 11.a4 (11.Qe3 a6 12.Nf3 ab5 13.Ne5 f6–/+) 11...f5 (11...Nd7!? 12.bc6 bc6 13.Ne2–+) 12.ef5 Rf5 13.Qe3 Nd7 14.Nf3 Increasing the pressure on the isolated pawn on e5 14...Bd5 15.bc6 bc6 16.Bd3? (better 16.Be2!? Rf4 17.Qc3–+ (17.Ne5?? Be5 18.Be5 Re4–+)) 16...Bc5–+ 17.Qe2 (17.Bf5 Be3 18.fe3 Bf3 19.gf3 Nc5–+) 17...Rf4 18.Ne5 Bf2 (18...Bg2?! 19.Rg1 Bf2 20.Kd1 Bg1 21.Qg2–+) 19.Kd1 Bg2?? (better 19...Nc5 20.Rf1 Nd3 21.Nd3 Re4–+) 20.Qh5=+ g6 (20...Bh1?? 21.Bh7 (21.Qh7 Kf8 22.Ng6 Ke8 23.Nf4 Qg5 24.Qg8 Nf8+–) 21...Kf8 22.Ng6 Ke8 23.Nf4 Ke7 24.Qe2 Kd6 25.Qf2+–) 21.Bg6 Qe7 (21...hg6? 22.Qg6 Kf8 23.Qh6 Ke8 24.Qh5 Ke7 25.Ng6 Kd6 26.Nf4+–) 22.Nc6 Bc6 Attacking the isolated pawn on a4 23.Bh7 Qh7 24.Qg5 Kf7 25.Qf4 Ke8 26.Rf1 Qh5 27.Kc1 Bc5 28.Re1 Kd8 29.Bc3 Qd5 30.Ba5 Nb6 31.Re5 Qd4 The pressure on the isolated pawn grows 32.Qg5 Kd7 33.Qf5 Kd6 34.Re6 Kc7 35.Bc3 Qc4 36.a5 Nd5 37.Re4 Qb5 38.Qf7 Bd7 39.Be5 (39.Qd5?? Ba3 40.Ra3 Qd5–+) 39...Bd6 40.Bd6 Kd6 41.Qg6 Kc7 42.Qg3 Kb7 43.a6 Kb6 44.Qd6 Qc6 45.Qc6 Bc6 46.h4 Rh8 47.d3 Rh6 48.Kd2 Rf6 49.Rc1 Rf2 50.Re2 Rf6 51.h5 Rh6 52.Re5 Nf4 (worse 52...Ka6 53.Rc6 Rc6 54.Rd5+–) 53.Rcc5 Rd6 Exerts pressure on the isolated pawn 54.d4 Ka6 55.Ke3 Ng2 56.Kf2 Nf4 57.Ke3 Ng2 58.Kf2 Nf4 59.Kg3 Nd3 60.Ra5 Kb6 61.Rg5 Rd4 62.h6 Rd8 63.Ra3 Nc5 64.Rh5 Ne4 65.Kf4 Rh8 66.Ra1 Nf6 67.Rh2 a5 ½–½. Silent Move (2115) – The Gravedigger (1930), redhotpawn.com, 2012.

8.Nf3 Nc3 9.Bc3 e4 (9...Nd7 10.Qc2=+) 10.Nd4= Bc8 (10...Qh4 11.d3=) 11.d3 Re8 12.de4 c5 (12...Re4 13.Bd3 Bg4 14.Qc2+–) 13.bc6 Nc6 14.Nb5 Bb8 15.Qd8 Rd8 16.Bc4 Ne5 (16...Be5 17.Be5 Ne5 18.Nc7+/–) 17.Bd5 a6 18.Nd4 (18...Bd6 19.Rb1+–) 1–0. Taulien,Hans_Juergen (2225) – Kerner,Max (1825), remoteschach.de, 2003.

7.Bc4 Nb6–/+

8.Bb3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qe8 (11...N8d7!?–/+) 12.Nc3+= N8d7 13.Nf3 (13.Ne4!?=) 13...Nc5–/+ 14.Bc2 h6 (14...e4 15.Nd4–/+) 15.0-0 (15.d4 ed4 16.Qd4=) 15...Bg4 (15...e4!? 16.Ne1 f5+=) 16.h3 Bh5 17.Qb1 (better is 17.d4!? ed4 18.Qd4=) 17...Bf3–/+ 18.gf3 Qe7 (18...Nc4!? 19.Qc1 Qd7–/+) 19.Ne4= Ne4 20.Be4 Qh4 21.Kh2 (21.Bb7 Qh3 22.Bc3 f5–+) 21...f5 (21...Rb8 22.Bc3=) 22.Bb7+= (22.Bf5? e4 23.f4 Bf4 (23...Rf5?! 24.Qe4 Rg5 25.Qf3–+) 24.ef4 Qf4 (24...Rf5 25.Be5=) 25.Kh1 Qf3 (25...Rf5?! 26.Qb3 Kh7 27.Rg1–/+) 26.Kh2 Rf5–+ (26...Qf5?! 27.Rg1 Rf7 28.Qb2–+)) 22...Rf6 23.f4 ef4 24.e4 (24.Bf6 f3 25.Kg1 Qh3 26.Qb3 Kh7 27.Qg8 Kg8 28.Bd5 Nd5 29.Bg7 Qg2) 24...fe4 25.Qe4 (25.Bf6 f3 26.Kg1 Qh3 27.Qb3 Kf8 28.Bg7 Kg7 29.Qc3 Kf7 30.Qb3 Ke7 31.Qf7 Kf7 32.Bd5 Nd5 33.b6 Qg2) 25...f3 26.Kg1 (26.Be5 Qg5 27.Rg1 Be5 28.Kh1–+) 26...Qh3 (26...Qh3 27.Qe8 Rf8 28.Qe6 Qe6 29.Bf3 Rf3 30.Rd1 Qg4 31.Kf1 Rh3 32.f3 Rf3 33.Ke1 Qe4) 0–1. Leon Manas,Jose Francisco (1710) – Sanchez Quintero,Raul (2085), 2nd Open Internacional MC Claud, 2010.

8.Bb3 a6 9.Nc3 ab5 10.Nb5 Nc6 11.Nf3 (11.Ne2 Bb4=+) 11...Bf5 (11...e4 12.Nd6 Qd6 13.Nd4–/+) 12.a4 (12.Nd6 Qd6 13.d4 e4=+) 12...Re8 (12...Nb4 13.0-0 (13.Ne5? Be5 14.Be5 Nd3 15.Kf1 Ne5–+) 13...Nd3 14.Qb1=+) 13.Nd6=+ Qd6 14.Ng5 Bg6 15.0-0 h6 16.Nf3 Bd3 17.Re1 Qb4 (17...Red8 18.Rc1 Nd7 19.e4=+) 18.e4=+ Nc4 (18...Qd6 19.Re3=+) 19.Bc3 Qc5 20.Bc2 Bc2 (20...Qd6 21.Bd3 Qd3 22.Qb1 Qb1 23.Rab1=+) 21.Qc2 Rad8 22.d3 Nb6 (22...Nd6 23.Rec1 Qa7 24.Qb2=) 23.Rec1+= Nd7 24.Qb2 Qd6 25.Qb7 (25.a5!?=) 25...Rb8=+ 26.Qa6 Nc5 27.Qc4 Nb3 (27...Nd3? 28.Rd1 Red8 29.a5+–) 28.Rab1 Nc1 29.Rc1 Qa3 30.Re1 Re6 31.h3 Qb3 32.Nd2 (32.a5 Qc4 33.dc4 Rb3–/+) 32...Qc4 (32...Qc2!?–/+) 33.Nc4= f6 34.Rc1 (34.Kf1 Na7=) 34...Rd8=+ 35.Nb2 Red6 36.Ra1 Rb8 37.Ra3 (37...Kf7 38.Kf1=+). Vettenburg – Knorr, corr SOK–97–125, 1999.

8.Bb3 a6 9.d4 ab5 10.de5 Bb4 11.Bc3 Qd1 12.Bd1 Be7–/+.

8.Bb3 Bd7 9.a4 (9.d4 Bb5 10.de5 Bb4 11.Bc3 Qd1 12.Bd1 Nc6+=) 9...a6 10.a5 (10.Nc3 ab5 11.Nb5 Bb5 12.ab5 Ra1 13.Ba1 N8d7+=) 10...Nc8 11.ba6 (11.d4 ab5 12.de5 Bb4 13.Bc3 Bc3 14.Nc3 c5–/+) 11...Na6 (11...Ra6 12.d4 Nc6 13.de5 Be5 14.Be5 Ne5 15.Nf3–/+) 12.Ne2 (12.d4 e4 13.Nc3 Bb4+=) 12...e4–/+ 13.0-0 (13.Bc2 Nc5–/+) 13...Nc5 14.Nbc3 Be5 (14...Qh4 15.Ng3 Ne7 16.Ba3 Ra5 17.Bc5 Ra1 18.Qa1 Bc5 19.Nce4=) 15.Qc2 (15.Ne4 Bb2 16.Nc5 Ba1 17.Qa1 Bb5 18.Nb7 Qg5–/+ (worse is 18...Qd2 19.Nd4 Bd7 20.Qc1 Qc1 21.Rc1+=)) 15...Nd6 (15...Bc6 16.Ba4 Na4 17.Na4 Ra5 18.Be5 Re5 19.Rfc1–/+) 16.f4 (16.Bd5 Re8+=) 16...ef3–/+ 17.Rf3 Qh4 (17...Bf5 18.Rf5 Nf5 19.Qf5 Nb3 20.Qe5 Na1 21.Nb1–+) 18.Ng3 (18.Nf4 Nb3 19.Qb3 Be6+=) 18...Nb3 (18...Bg4 19.d4 Nb3 20.Qb3 Bg3 21.Rg3–+) 19.Qb3 Nc4 20.Bc1 (20.Rf2!?–/+) 20...Bc6–+ (20...Ra5 21.Ra5 Na5 22.Qd5 Bc3 23.Qd7=) 21.Rf2 Na5 Opening the a–file gets Black a lot of play (21...Ra5 22.Ra5 Na5 23.Qa2–/+) 22.Qd1 (22.Qc2 Bg3 23.hg3 Qg3–+) 22...Rfd8 (22...Nc4 23.Ra8 Ra8 24.d3–+) 23.Qh5 (23.Qc2 Bg3 24.hg3 Qe7–+ (24...Qg3?! 25.Qf5 b6 26.Qf7 Kh8 27.Bb2+=)) 23...Qh5 24.Nh5 Bc3 (24...Nc4 25.Ra8 Ra8 26.d4–+) 25.dc3 Nc4 (25...b6 26.e4–+) 26.Ra8 Ra8 27.Ng3 Nd6 28.h3 (28.Bb2 Ra2–+) 28...Ra1 29.Rf1 f5 30.Bd2 (30.h4 b5–+) 30...Ra2 31.Rf2 Be4 32.Kh2 (32.Bc1 Ra1 33.Rf1 b5–+) 32...b5 33.Be1 Ra1 34.Rf1 (34.Re2 c5–+) 34...Bd3 35.Rg1 Ra2 36.h4 (36.Nh1 Nc4–+) 36...Nc4 37.Nf1 c5 38.Kg3 Kf7 39.Kf4 (39.h5 Re2 40.Nh2 Kf6–+) 39...b4! 40.cb4 cb4 41.Ng3 (41.Bb4 Rf2 42.Kg3 Rf1 43.Rf1 Bf1 44.Bc5–+) 41...b3 42.Bc3 Rf2 43.Kg5 h6 44.Kh5 Ne3 45.Nh1 (45.Ra1 Ra2 46.Re1 Ng2 47.Nf5 Ne1 48.Nd6 Ke6 49.Ne8–+) 45...Ng4 46.Nf2 (46.Bg7 Kg7 47.Nf2 Nf6) 0–1. Kessler,Meinrad – Baer,Werner, TT–10 ETC, 2004.

8.Bb3 N8d7 9.d4 ed4 10.Bd4 Nc5 (10...Qg5!?–/+) 11.Bc2=+ Qe7 12.Nf3 a6 13.a4 (13.Nc3 Rd8=+) 13...Bg4 (13...ab5 14.ab5 Ra1 15.Ba1=+) 14.Bg7 (14.a5 Nbd7=+) 14...Bf3 15.Bf8 Bd1 16.Be7 Bc2 17.Bd6 cd6 18.ba6 Ra6 (18...Na6?! 19.a5 Nb4 20.Kd2–/+) 19.Nc3 Nca4 (19...Ba4 20.Ke2–+) 20.Nb5 Nc4 21.Nd4 Bd3 22.f3 Rb6 23.Kf2 Rb2 24.Kg3 Nc5 25.e4 Kg7 26.Rhe1 Kf6 27.Ra8 Ke5 28.Nf5 d5 29.Re8 Kf6 30.Rc8 Na4 31.Kh3 (31.Nh6 de4 32.fe4 Nc3 33.Ng4 Ke7–+) 31...de4 32.fe4 Ne5 33.Rc7 (33.Re8 Bb5 34.Rb8 Nc5–+) 33...b5 34.Nd6 Ke6 35.Ne8 Bc4 36.Re3 Nd3 37.Rf3 Nf2 38.Kh4 Ne4 39.Rff7 Rg2 40.h3 Nac3 41.Rce7 (41.Rh7 Nd5 42.Rcg7 Ne3 43.Rg2 Ng2 44.Kh5 b4–+) 41...Kd5 42.Rf5 (42.Rd7 Kc5 43.Rh7 Rf2–+) 42...Kd4 43.Rd7 Ke3 44.Rb7 (44.Rh7 Rg6–+) 44...Nd5 45.Rd5 (45.Rh7 Rg8 46.Re5 Kd4–+) 45...Bd5 46.Rb5 (46.Rh7 Rf2 47.Kh5 Bf7 48.Kh6 Be8–+) 46...Bf7 47.Re5 (47.Nf6–+) 47...Rf2 48.Re4 0–1. 45 GALLON FISH (2105) – knightwiz (2300), ChessWorld.net, 2003.

8.Be2 Be6–/+.

8.Be2 Qe7 9.Nf3 Bg4 (9...e4 10.Nd4=+) 10.0-0 (10.Nc3 e4 11.Nd4 Be2 12.Qe2 Rd8=) 10...N8d7 (10...e4 11.Ne1 Na4 12.Bg4 Nb2 13.Qc2=+) 11.d4 e4 12.Nfd2 Be2 13.Qe2 f5 14.Nc3 Rf6 (14...a6 15.a4=+) 15.f4 (15.f3 ef3 16.Qf3 Re8=) ½–½. Palmi,Herbert – Kreuzer,Klaus (2100), Nord Bayern–ch, 2001.

8.Be2 Bf5 9.Nc3 Bg6 10.a4 a6 11.a5 N6d7 12.d4 ed4 (12...ab5 13.de5 Be5 14.Nf3–/+) 13.Qd4+= ab5 14.Bb5 (14.Nb5 Be5 15.Qd2 Bb2 16.Qb2 c6+=) 14...Qg5 (14...Bc5 15.Qf4–/+) 15.Kf1+= Nf6 (15...Nc5 16.Nf3 Qh5 17.Qh4–/+) 16.Nf3 Qh5 17.Qh4 Qc5 18.Qc4 Qc4 19.Bc4 Nc6 Exerts pressure on the isolated pawn 20.Nb5 Na5 21.Nd6 Nc4 22.Nc4 Bd3 23.Ke1 Ra1 24.Ba1 Bc4 25.Bf6 gf6 26.Kd2 c5 27.Kc2 Rd8 28.Nd2 Bd3 29.Kb2 b5 30.Ra1 Kg7 31.Ra7 Bf5 32.Nb3 Rc8 33.Ra5 (33.Rb7 Bd3–/+) 33...Bd3 34.h4 Kg6 35.Kc3 Bf1 36.Kc2 f5 37.g3 h5 38.Nd2 Be2 39.Ra6 f6 40.Rd6 Kf7 41.Rb6 Ke7 42.Kc3 (42.Kb2 b4–/+) 42...b4 43.Kc2 Rd8 44.Rc6 Rd5 45.Nb3 Kd7 (45...Bd3 46.Kb2 c4 47.Nd4–/+) 46.Rf6–/+ Kc7 47.Kb2 Bf3 48.Rf8 Bg4 49.Ra8 Kc6 50.Rc8 (50.Ra6 Kb5 51.Ra5 Kb6–/+) 50...Kb5 51.Ra8 Bd1 52.Rb8 Kc4 53.Na5 Kd3 54.Nc6 Ke2 55.Ne7 (55.Kc1 Ba4 56.Ne7 Rd1 57.Kb2 Bd7–+) 55...Rd2 56.Kc1 Bb3 57.Rc8 Rc2 58.Kb1 Kd2 59.Rd8 (59.Nf5 Ba2 60.Ka1 b3 61.Rc5 Rc5 62.Kb2 Rc2 63.Ka3 b2 64.Nd6 b1Q 65.Ne4 Kc1 66.Ka4 Rc7 67.Nc5 Ra7 68.Na6 Ra6) 59...Kc3 Do you see the mate threat? 60.Nd5 Bd5 61.Rd5 c4 (61...Rf2?! 62.Rc5 Kd3 63.Re5–/+) 62.Rd1 (62.f3 Rf2 63.Rd1–+) 62...Kb3 (worse is 62...Rf2 63.Re1–+) 63.Ka1 (63.Rd4 Rf2 64.Kc1–+) 63...c3 64.e4 (64.Re1 Ra2 65.Kb1 c2 66.Kc1 Kc3 67.e4 Ra1) 64...Ra2–+ 65.Kb1 c2 66.Kc1 Ra1 67.Kd2 cd1Q 68.Ke3 Qe1 69.Kf4 Qe4 70.Kg5 Ra6 71.f3 (71.f4 Qe6 72.Kh5 Qg6) 71...Qf3 72.g4 Qg4 0–1. Pierred (2185) – Adamp01 (2420), internet, 2005.

6.Nf3 e4

7.Ne5 a6 8.Qb3 ab5 9.cb5 Be6 10.a4 d4! 11.Bc4 (11.Bd4 Bb3 Discovered attack; 11.ed4 Bb3 Discovered attack) 11...Be5 12.Be6 de3 (12...fe6?! 13.Qe6 Rf7 14.Qe5 de3 15.fe3+=) 13.Be5 ef2 14.Kf2 fe6 15.Qe6 Kh8 16.Ke1 Nbd7 17.Bd4 Nb6 (17...c5 18.bc6 Ra6 19.Nc3+=) 18.Bb6+= cb6 19.Qa2 (better is 19.Nc3–/+) 19...Qd4 20.d3 (20.Nc3 Ng4 21.h3–+) 20...ed3 (20...Qd3?! 21.Qd2 Qc4 22.Qc3 Ra4 23.Qc4 Rc4 24.Nd2–+) 21.Kd1 Rac8 22.Rf1 Ne4 23.Rf8 (23.Nd2 Nc3 24.Kc1 Na2 25.Kd1 Rf1 26.Nf1 Qg4 27.Kd2 Qe2) 23...Rf8 24.Nd2 (24.Qg8 Kg8 25.Nd2 Qa1 26.Nb1 Qb1) 24...Qg1 (24...Qg1 25.Nf1 Rf1) 0–1. Klawitter,Bernd – Zemlyanov,Sergey, FICGS, 2015.

7.Ne5 Qe7 8.f4 Rd8 (8...Nbd7 9.Nd7 Bd7 10.Bf6 Qf6 11.Nc3+=) 9.Nc3 (9.cd5 Nd5 10.Qc2 Bf5–/+) 9...Be5–/+ 10.fe5 Qe5 11.Qc2 dc4 12.Bc4 Qf5 (better is 12...Qd6+=) 13.Rf1+/– Qh5 14.Rf6 gf6 15.Ne4 Nd7 (15...Qh2 16.Nf6 Kf8 17.Nh7 Ke8 18.Qe4 Be6 19.Be6+–) 16.Bf6 (16.Qd3!? Rf8 17.Nf6 Nf6 A) worse is 18.Bf6 Qh2 19.0-0-0 Be6+= (19...Qg2? 20.Bb2 h5 21.Qc3+–); B) 18.Qd4+=) 16...Re8+= 17.Bb2 Qh4 (17...Qh2 18.Bf7 Kf8 19.Be8 Ke8 20.Qc4 Qg2 21.Qe6 Kd8 22.Bf6 Nf6 23.Qf6 Ke8 24.Qe5 Kd8 25.Qh8 Ke7 26.Qh7 Kd8 27.Rc1 Qg1 28.Ke2 Qg4 29.Kf2 Qf5 30.Qf5 Bf5 31.Nc5+–) 18.Nf2 Ne5 (18...Qh2 19.Qf5 Re6 20.Qg5 Kf8 21.Qd8 Re8 22.Ba3 Qd6 23.Bd6 cd6 24.Qc7+–) 19.Bf1 Qh2 20.e4 (20.Rc1 c6+=) 20...Qg3–/+ 21.Qc5 Bf5 22.Qc3 Qc3 23.Bc3 Be4 24.Ne4 Ng6 25.Bd3 Nf4 26.Bc2 (26.Kd1 Nd3 27.Nf6 Kf8 28.Ne8 Re8–/+) 26...f5–+ (26...Ng2? 27.Kf2 Nf4 28.Nf6 Kf8 29.Ne8 Re8 30.Rh1+–) 27.d3 fe4 28.de4 Rad8 29.Kf2 c5 30.bc6 bc6 31.Rh1 Nd3 (31...Rd7 32.Rh6 Ng6 33.Ke3–/+) 32.Kf3+= Nc5 The isolani on e4 becomes a target 33.Rh6 a6 34.Rc6 Rc8 35.Rc8 Rc8 36.Bd4 Kf8 37.Be3 h5 38.a4 Rc6 39.g3 Ke7 40.Bg5 Kd7 41.Be3 Ne6 42.Bd3 Kd6 43.Bf4 Kc5 (43...Nf4 44.gf4 Rc3 45.Ke2–+) 44.Bd2 Kd4 45.Be2 a5 46.Bb5 Rc8 47.Bd7 Rf8 48.Ke2 Rf6 49.Be8 Ke4 50.Bh5 Nd4 51.Ke1 Kd3 Threatening mate... how? 52.Bf4 Rb6 53.Kf2 Rb2 54.Kf1 Ke4 (54...Nb3 55.Be8–/+) 55.Bg6+= Kd5 56.Bc7 Rb4 (56...Ne2 57.g4 Nc3 58.Be8+=) 57.Be8 (57.Ba5!? Ra4 58.Bc3=) 57...Nb3+= 58.Kg2 Rb7 59.Bf4 Nc5 60.Bb5 (60.Kf3 Nd3–/+) 60...Ne4 61.Be8 Nd6 62.Bd6 Kd6 63.Kf3 Ke6 64.Kf4 (better is 64.Ke3!?–/+) 64...Rb8–+ Black launches an attack 65.Bc6 Rb6 66.Be8 Ke7 67.Bh5 Rb4 68.Ke5 (68.Kf3 Ra4 69.Bg6 Ra3 70.Kf4 a4–+) 68...Ra4 69.Kd5 Ra2 (69...Rb4 70.Kc5–+) 70.Kc4 a4 71.Kb4 a3 72.g4 Kf6 73.Kb3 Ra1 74.Be8 Kg5 75.Bd7 Kg6 76.Be8 Kh6 77.Ba4 Kh7 78.Be8 Kg8 (78...Kg7 79.Bh5–+) 79.g5 Kf8 80.Bc6 Ke7 81.Bd5 Kd6 (81...Rd1 82.Ba8–+) 82.Bg8 (82.Bc4 Ke5 83.Bd3 Rg1–+) 82...Ke5 83.Bh7 (83.Bf7 Kf5 84.g6 Kf6–+) 83...Ke6 84.Bg6 Ke7 85.Bh5 ½–½. bambinik (2470) – valodia (2490), internet, 2003.

7.Ne5 Re8 8.f4–/+.

7.Nd4 c5

8.Nb3 dc4 9.Bc4 Nbd7 10.0-0 (10.Qc2 Qc7=+) 10...Qc7 11.h3 Ne5 12.Be2 Be6 13.Nc3 Nc4 14.Qc2 Nb2 15.Qb2 Rad8 16.Qc2 Rfe8 17.a4 (17.f3 ef3 18.Bf3 Be5–/+) 17...Bh2 18.Kh1 Be5 19.Rac1 b6 (19...Bb3!? 20.Qb3 Rd2–+) 20.Rfd1 Re7 21.Kg1 (21.Na1 Qb7–/+) 21...c4 22.Nd4 (22.Na1!? Qb7 23.f3–/+) 22...Bd4–+ 23.ed4 Rd4 24.Nb1 Nd5 25.Na3 Nf4 26.Bf1 Qc5 27.Nc4 (better is 27.Qc3–+) 27...Rc7 28.Ne3 (28.d3 ed3 29.Bd3 Nd3 (< 29...Rd3 30.Rd3 Qg5 31.Rg3 Ne2 32.Qe2 Qc1 33.Kh2 Rc4 34.Qe5–+; 29...Bc4 30.Bc4 Qg5 31.g4 Rdc4 32.Qc4 Rc4 33.Rc4–+; 29...Rc4 30.Bc4 Nh3 31.Kh2 Qe5 32.g3+/–) 30.Rd3 Qc4 31.Rd4 Qd4 32.Qc7 h6 33.Qa7 Qf4+–) 28...Nh3! 29.Kh2 (29.gh3 Qg5) 29...Qe5 (29...Qd6 30.g3 Rc2 31.Nc2 Rd2 32.Be2 Nf2 33.Rd2 Qd2 34.Ra1–+) 30.f4 ef3 (31.Kh1 Nf2 32.Kg1 Rc2 33.Rc2 Nd1 34.Nd1 fg2 35.Bg2 Qe1 36.Kh2 Rh4 37.Bh3 Rh3 38.Kg2 Rg3 39.Kh2 Qg1) 0–1. Istvanny (1630) – Emma123 (1745), internet, 2007.

8.Nb3 Be6 9.cd5 Nd5=+.

8.Nb3 Be6 9.Bf6 Qf6 10.Nc3 dc4 11.Ne4 Qe7 12.Na5 Bc7–/+.

8.bc6 Nc6 9.cd5 Nd4 10.Bd4 Nd5 11.Be2 (better 11.d3 Bf5 12.de4 Bb4 13.Nd2 Be4 14.Rc1=+) 11...f5?? (11...Qg5 12.g3-/+) 12.0-0?? (better 12.Qb3!? Be6 13.Bc4+/- (worse 13.Qb7 Qg5-/+)) 12...f4 (better 12...Be6!?=+) 13.Qb3 Be6 14.Bc4 (worse 14.Qb7 Rf7 15.Bg4 Rb7 16.Be6 Rf7 17.Bd5 f3-/+) 14...Be7 (14...f3 15.g3 Rf5+/-) 15.Nc3+- (15.Qb7 Qd6 16.Nc3 Nc3 17.Be6 Qe6 18.dc3 f3 19.gf3 ef3+/-) 15...f3? (better 15...Rf5 16.d3 b5 17.Bd5 Rd5 18.Nd5 Bd5 19.Qb5 a6+-) 16.Nd5 Bd5 (16...Kh8 17.Qb7 fg2+-) 17.Bd5 Kh8 18.Be4 fg2 19.Bg2 Bd6 (19...Bf6 20.Bf6 Qf6 21.Qb7+-) 20.f4 (better 20.Qb7 Qg5+-) 20...Bf4 (20...Rc8 21.Bb7 Rc7 22.Ba7+-) 21.Bc5 (21.Qb7 Bh2 22.Kh2 Qd6 23.Rf4 Qh6 24.Kg1 Rad8 25.Rf8 Rf8+-) 21...Qd2 (21...Bh2 22.Kh2 Qc7 23.Kg1 Qc5 24.Qb7 Rad8 25.Rf8 Qf8+-) 22.Rf4 (22.Bf8 Rf8 23.ef4 Qd4 24.Kh1 b6+-) 22...Rf4 23.ef4 1-0. ClayPigeons (2160) - chesspro_usa (2110), Rated Bullet game, lichess.org, 2020.

8.bc6 Nc6 9.cd5 Nd5 10.Nc6 bc6 11.Nc3 Rb8 12.Rb1 Bf5–/+.

6.Nf3 Re8

7.Qc2 c5 8.bc6 Nc6 9.c5–/+ Bc7 10.Be2 Bg4 11.h3 Bh5 12.d3–/+.

7.Qc2 c6 8.c5 Bc7 9.a4 (9.d4 e4 10.Nfd2 Ng4 11.Be2 Qh4 12.g3–/+) 9...Bg4 10.Be2 (10.d4 Ba5 11.Nfd2 Nbd7 12.f3+=) 10...Nbd7 (10...e4 11.Nd4 Be2 12.Ne2+=) 11.h3 (11.0-0 e4 12.bc6–/+) 11...Bh5 (11...Bf3 12.Bf3+=) 12.0-0 Qe7 13.d4 e4 14.Ne1 Be2 15.Qe2 Nf8 16.Nc3 Ng6 17.g3 (17.a5!?=) 17...Qd7 18.Kg2 h6 19.f4 ef3 20.Nf3 (20.Qf3 Ba5+=) 20...Nh5–/+ 21.Ne5 Ne5 (21...Be5?! 22.Qh5 Bf6 23.Rf6 gf6 24.Qh6+=) 22.Qh5 Nc4 23.Bc1 Ne3 24.Be3 Re3 25.Rf3 Rf3 (25...g6 26.Qg4 (26.Qh6?? Rf3 27.Kf3 Qf5 28.Kg2 Qc2 29.Kh1 Qc3–+) 26...Qg4 27.hg4 Rf3 28.Kf3–/+) 26.Qf3 Re8 27.Rf1 Re6 28.Qg4 (28.Rb1 Qe8 29.bc6 bc6–+) 28...Qe7 (28...Bg3 29.Ne2 (worse is 29.Qg3 Rg6 30.Qg6 fg6–+) 29...Bc7 30.Nf4 Bf4 31.Qf4 Re2 32.Kg3–+) 29.Rf2 (better is 29.Rf3!?–/+) 29...Bg3!–+ 30.Re2 (30.Kg3 Rg6; 30.Qg3 Rg6) 30...Bc7 31.Re6 Qe6 32.Qe6 fe6 33.Kf3 (33.Na2 Ba5–+) 33...Kf7 (33...e5 34.de5 Be5 35.Na2–+) 34.Na2 Ba5 35.Nc1 Bc3 36.Ne2 Bb2 37.Ke3 e5 38.de5 Be5 39.Nc1 g5 40.Nd3 (40.Nb3 Ke6–+) 40...Bc3 (40...Ke6 41.Nb4–+) 41.Nf2 (41.Nc1 Ke6–+) 41...Ke6 42.Kd3 Be1 43.Ng4 (43.Nd1–+) 43...h5 44.Nh2 (44.Nh6 Bf2 45.b6 a5–+) 44...Bf2 45.Nf3 Kf5 (worse is 45...Bc5 46.Ng5 Kf5 47.Nf3–+) 46.a5 (46.Nd2 cb5 47.ab5 Bc5–+) 46...a6 47.b6 (47.ba6 ba6 48.Ke2 Bc5–+) 47...Bc5 0–1. Raeva,Elitsa (2215) – Muzychuk,Anna (2455), ch–Euro Rapid Women, 2007.

7.Qc2 e4 8.Nd4 c5 9.bc6 Nc6 10.c5 Be7 11.Be2 Nd4 12.Bd4=+.

7.d3 dc4 8.dc4 e4 9.Nd4–/+.

7.d3 c6 8.a4 (8.Be2 a6+=) 8...a6–/+ 9.Nbd2 Nbd7 (9...cb5 10.ab5 e4 11.de4 de4 12.Nd4+=) 10.Be2 (10.d4 e4 11.Ng5 Bb4+=) 10...ab5 11.ab5 Ra1 12.Qa1 e5 seems the pivot of the position 12...cb5 13.cb5 (13.cd5 Nd5 14.0-0 N5f6+=) 13...Qb6 14.d4 e4 15.Ne5 Bb4 (15...Qc7 16.0-0+=) 16.Bc3 (16.Qa4 Bd2 17.Kd2 Ne5 18.de5 Ng4 19.Bg4 Bg4+=) 16...Bc3 17.Qc3 Ne5 18.de5 Ng4 (18...Nd7 19.0-0+=) 19.0-0 (19.Qd4 Qc7+=) 19...Ne5–/+ 20.Rc1 h6 (20...Bg4 21.Bf1–/+) 21.Nb3 (21.Qc5 Qc5 22.Rc5 Rd8+=) 21...Bd7 Attacks the isolani on b5 (21...Qg6 22.Qd4+=) 22.Qd4 (22.Qc7!? Qc7 23.Rc7+=) 22...Qd4–/+ 23.Nd4 b6 (23...Rc8 24.Ra1–/+) 24.Kf1 (24.Rc7 Bg4 25.f3 ef3 26.gf3 Bc8=) 24...Rc8 (24...Ra8 25.Ke1–/+) 25.Rc8 Bc8 26.Ke1 (26.Nc6 Nc6 27.bc6 Kf8–/+) 26...Kf8 27.Kd2 Ke7 28.Kc3 (28.f4 ef3 29.gf3 g5–/+) 28...Kd6 29.h3 (29.f4 Ng4 30.Bg4 Bg4–/+) 29...Bd7 30.h4 Kc5 (better is 30...g5!? 31.hg5 hg5–/+) 31.Nb3= Kd6 32.Nd4 g5 33.hg5 hg5 34.f3 (34.Kb4 g4–/+) 34...f5–+ 35.f4 gf4 36.ef4 Ng6 37.g3 Nf8 38.Bh5 Kc5 (38...Ne6 39.Ne6 Ke6 40.Be2–+) 39.Be2 (39.Bf7 Bc8–+) 39...Ne6–+ 40.Nb3 Kd6 41.Nd4 Nc5 (41...Nd4 42.Kd4 Be8 43.Bf1–+) 42.Bf1 (42.Kc2 Nb7–+) 42...Na4 (42...Ke7!? 43.Kd2–+) 43.Kb4 Nc5 (43...Nb2 44.Bh3 Nd3 45.Kc3 Kc5–/+) 44.Kc3–+ Nb7 (44...Ke7 45.Be2–+) 45.Kb4 (45.Bh3 Kc5 46.Bf5 Bf5 47.Nf5 Nd6 (worse is 47...Kb5 48.Kd4+–) 48.Nd6 d4 49.Kb3 Kd6=) 45...Na5 (45...Ke7 46.Kc3–+) 46.Be2 (better is 46.Bh3!?+=) 46...Ke7 (46...Be6 47.Kc3–+) 47.Kc3 Kf6 48.Bf1 Be8 (48...Nb7 49.Nc6–+) 49.Be2–/+ Bf7 50.Bf1 (50.g4 fg4 51.Bg4 Nc4–/+) 50...Bh5 51.Be2 (51.Bh3 Bg6–+) 51...Be2 52.Ne2 Nc4 53.Kd4 (53.Nd4 Ne3–+) 53...Ke6 54.Nc3 (54.Kc3 Kd6–+) 54...Na3 The mate threat is Nc2 55.Nd5 Nb5 56.Kc4 Nd6 (better is 56...Na3 57.Kd4 Nc2 58.Kc4 b5 59.Kc5 e3 60.Ne3 Ne3–+) 57.Kd4–/+ b5 (57...Nc8 58.Nc7 Kd7 59.Nd5–/+) 58.Nb4 (58.Kc5!?–/+) ½–½. Borkowski,A – White,Ian Graham, Bristol op, 1997.

7.cd5 Nd5 8.Qb3 Nb6=+ 9.d4 e4 10.Ne5 Be6 11.Qc2 Bb4 12.Bc3=+.

7.cd5 Nd5 8.Nc3 Nc3 9.Bc3 Nd7=+.

7.cd5 Nd5 8.e4 Nf4 9.Nc3 Bg4 10.h3 Bh5 11.g4 Bg6 12.h4=+.

7.Be2 c5 8.d3 Nbd7 (8...a6 9.Nbd2–/+) 9.0-0 (better is 9.cd5 Nd5 10.Nbd2=) 9...e4 (better is 9...d4!?+=) 10.de4+= Ne4 11.cd5 Ne5 (11...Nb6 12.Nbd2 Bf5 13.Qb3+=) 12.Nc3 (12.Nbd2 Bf5+/–) 12...f5 (12...Nf3 13.Bf3 Bf5 14.Qe2+/–) 13.Ne4 (13.Qc2 Ng4+/–) 13...fe4 (13...Nf3 14.Bf3 fe4 15.Bh5+=) 14.Ne5 Be5 15.Be5 Re5 16.Qc2 (16.Bc4 Qd6+/–) 16...Qd6 (16...Qd5?? 17.Bc4 Qc4 18.Qc4 Be6 19.Qc3+–) 17.Rfc1 (17.Rad1 Bd7+/–) 17...b6 (17...Qd5?? 18.Bc4 Qc4 19.Qc4 Be6 20.Qc3+–) 18.Qb3 (18.Rd1 Bb7+/–) 18...Bb7 Pawn d5, live or die! (18...Rg5 19.f4 ef3 20.Bf3+/–) 19.Rd1 Rf8 (19...Rd5?? 20.Bc4 Kf8 21.Bd5+–; 19...Bd5?? 20.Rd5! Rd5 21.Rd1+–) 20.Rd2 Kh8 (20...Rg5 21.Bc4+/–) 21.f4 (21.Rad1!?+/–) 21...Rd5+= 22.Rd5 (22.Rdd1 Rd8+=) 22...Bd5= 23.Qa4 (23.Qa3 Qe7+=) 23...Qf6 (23...g5 24.fg5 Qe5 25.Rf1 Rf1 26.Kf1 Qh2 27.Qa7 Qh1 28.Kf2 Qh4 29.g3 Qh2 30.Kf1 Qh1 31.Kf2 Qh2 32.Kf1 Qh1 33.Kf2 Qh2=) 24.Rd1+= Qf7 25.Rd2 (25.Qc2 Ba2 26.Qe4 Re8=) 25...h6 26.Qc2 Re8 (26...Kh7 27.Qb1+=) 27.Qd1 Ba2 (27...Be6!?+=) 28.Bh5+/– g6 29.Qa1 (29.Bg6 Qg6 30.Ra2 Qg7+/–) 29...Kh7 (29...Qg7 30.Qa2 gh5 31.Qd5+=) 30.Qa2 (better is 30.Ra2!? gh5 31.Ra7+/–) 30...Qa2+= 31.Ra2 gh5 32.Ra7 Kg6 33.Rc7 (33.Rd7 Kf6+=) 33...Ra8 (better is 33...Re6!?=) 34.Rc6+/– Kf5 (34...Kg7 35.Rb6 Ra1 36.Kf2+/–) 35.Rb6 Ra1 36.Kf2 Ra2 37.Kg3 Re2 (37...h4 38.Kh4 Rg2 39.Rb8+/–) 38.Kh3 (38.Kh3 Re3 39.g3=). Zepeda,Rafael – Martinez,Carlos Alejandro (2270), Central America–ch, 1997.

7.Be2 e4 8.Nd4–/+.

5.c4 a6

6.a4 0-0 7.cd5 Nd5 8.Nc3 Nb4 9.Ba3 A) 9...Bf5 10.Bb4 Bb4 11.Nf3 ab5 12.ab5 Nd7 13.Be2 Re8 14.0-0; B) 9...c5 10.Rc1 (10.Ne4 ab5 11.Bb4 cb4 12.ab5 Ra1 13.Qa1 Bf5 14.Bd3) 10...ab5 11.Bb5 Be6 12.Nf3 f5 13.Qe2 N8c6 14.Bc4; C) 9...ab5 10.Bb4 (10.Qb1 c5 11.Bb5 Be6 12.Nf3 N8c6 13.h4 f5 14.Ng5) 10...Bb4 11.ab5 Ra1 12.Qa1 Be6 13.Nf3 Nd7 14.Be2.

6.a4 0-0 7.cd5 Nd5 8.Nc3 Nb4 9.Qb1 Be6 (9...Nd7 10.Nf3 (10.ba6 Na6 11.Nf3 Nac5 12.Ba3 g6 13.h4 Na4 14.Na4) 10...Nc5 11.ba6 Nba6 12.Bc4 Be6 13.Be6 fe6 14.Ba3; 9...ab5 10.ab5 Ra1 11.Ba1 Be6 12.Ne4 Ba2 13.Qb2 Bd5 14.Qb1) 10.Nf3 Nd7 (10...f5 11.Ba3 (11.Be2 ab5 12.Nb5 N8c6 13.Nd6 Qd6 14.0-0) 11...a5 (11...c5 12.bc6 N8c6 13.Ne5 Be5 14.Bb4) 12.e4+= (12.h4 h6 13.Be2 Nd7 14.e4) 12...Nd7 13.Be2 Qf6 14.0-0) 11.ba6 (11.Be2 Nc5 12.ba6 Nba6 13.0-0 Nb3 14.Ne4) 11...Bb3 (11...ba6 12.Ne4 Bb3 (12...Qe7 13.Neg5 f5 14.Ne6) 13.Bd3= f5 14.Nd6) 12.ab7 (12.Bd3 Nd3 13.Qd3 Nc5 14.Qe2) 12...Bc2 (12...Nc2 13.Qc2 Bc2 14.ba8R Qa8 15.Nb5+=; 12...Rb8 13.Bd3 Nd3 14.Qd3) 13.ba8B (13.ba8Q Qa8 14.Bb5+= (14.Qc1 Nc5+=); 13.Qc1 Nc5 14.ba8Q) 13...Bb1 (13...Qa8 14.Bb5) 14.Rb1 Qa8 15.Bb5 c6 16.Be2 Nc2 17.Kf1 Nf6 (17...Nc5 18.Rc1 Nb4 19.Ba3+=) 18.g3 (18.Kg1 Rb8 19.Bd3 Nb4–/+) 18...e4 (18...Qa5 19.Rc1 Nb4 20.d4+=) 19.Ng5 Re8 (19...c5 20.f3 ef3 21.Bf3+=) 20.d3 ed3 (20...Be5 21.Nge4 Ne4 22.Ne4+=) 21.Bd3 c5 (21...Nb4 22.Bc4 Nbd5 23.e4=) 22.Kg1 (22.e4 Nb4 23.Bc4 Re4 24.Bf7 Kf8–/+) 22...Ne3 (22...Nb4 23.Bc4 Re7 24.f4+=) 23.fe3 h6 (23...Re3 24.Bf1+=) 24.Nb5 (24.Nh3 Re3 25.Nf2 Bg3 26.hg3 Rg3 27.Kf1 Rd3 28.Nd3 Qh1 29.Ke2 Qg2 30.Nf2 Ng4–+) 24...Re3 (24...hg5 25.Nd6 Rd8–/+) 25.Bf1 (25.Bc4 Bg3 26.Bf7 (26.hg3 Rg3 27.Kf2 Qg2 28.Ke1 Qh1 29.Bf1 hg5 30.Bf6 Qe4 31.Kd2 Qb1–+; 26.Nf7 Bf2 27.Kf2 Qf3 28.Kg1 Qg4 29.Kf2 Rf3 30.Ke1 Qe4 31.Kd1 Qc4–+) 26...Kh8 27.Bg6–+) 25...Be5 (25...hg5 26.Nd6 Ng4 27.Bg2 Qa4 28.Bd5–+) 26.Be5 Re5 27.Nh3 Ng4 28.Ra1 Qd5 29.Rc1 Qf3 30.Rc3 0–1. Janek – Nello, internet free game, 2017.

6.a4 0-0 7.cd5 Nd5 8.Nc3 Nb4 9.Rc1 A) 9...h6 10.Ne4 (10.Nf3 Bf5 11.d4 Nd7 12.ba6 Na6 13.e4 Bg4 14.Be2) 10...ab5 11.Bb5 N8c6 12.Ne2 Be6 13.0-0 Qe7 14.Nd6; B) 9...ab5 10.Nb5 (10.Bb5 N8c6 11.Nf3 Bf5 12.d3 Qf6 13.0-0 Rfd8 14.Ne4) 10...N8c6+= 11.Nf3 Be6 12.Nd6 Qd6 13.d4 Rfd8 14.Bb5.

6.a4 0-0 7.cd5 Nd5 8.Nc3 Nb4 9.Be2 A) 9...Re8 10.Qb1 (10.Nf3 e4 11.Nd4 c5 12.bc6 N8c6 13.Nc6 bc6 14.0-0) 10...Nd7 11.Nf3 Nc5 12.Ba3 a5 13.0-0 Bd7 14.d4; B) 9...Bf5 10.e4 Be6 11.Nf3 ab5 12.ab5 Ra1 13.Ba1 Qf6 14.0-0; C) 9...ab5 10.Nf3 (10.ab5 Ra1 11.Ba1 Qf6 12.Ne4 Qg6 13.Nd6 cd6 14.Nf3) 10...ba4 11.Ra4 Ra4 12.Qa4 c5 13.Ne4 N8c6 14.Qb5.

6.a4 0-0 7.cd5 Nd5 8.Nc3 Nb4 9.Nf3 A) 9...Bf5 10.e4 (10.d3 ab5 11.Nb5 N8c6 12.Be2 Qe7 13.0-0 Rfd8 14.e4) 10...Bg4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 Nd7 14.0-0; B) 9...Be6 10.Ne4 (10.d4 Nd7 11.ba6 Na6 12.Be2 f5 13.h4 h6 14.d5) 10...Bf5 11.d3 ab5 12.ab5 Ra1 13.Ba1 Nd5 14.Ned2; C) 9...ab5 10.Bb5 (10.ab5 Ra1 11.Ba1 Bf5 12.e4 Be6 13.Be2 Nd7 14.0-0) 10...N8c6 11.Ne4 Bf5 12.d3 Be6 13.0-0 f6 14.Qd2.

6.a4 0-0 7.cd5 Nd5 8.Nc3 f5?? (better is 8...Be6+=) 9.Nd5 Be6 10.Nc3 ab5 11.ab5 Ra1 12.Ba1 Bb4 13.Nf3 e4 (13...Nd7 14.Qa4 Qe7 15.Be2+–) 14.Nd4 Bc8 (14...Qd6+–) 15.Qb3 (15.Qb3 Kh8 16.Qb4+–) 1–0. mr5reasons1 (1635) – porygon, gameknot.com, 2012.

6.a4 0-0 7.Nf3 e4 8.Nd4 c5 9.bc6 Nc6 10.cd5 Nd5 11.Nc6 bc6 12.Nc3 Rb8 13.Rb1 Nb4 14.Ne4 Bf5 15.Qf3 Qd7 16.Be2? (better is 16.Rc1 Be7 17.g4 Bg4 18.Qg2 Nd3 19.Bd3 Qd3 20.Qg4 Rb2 21.Rg1–+) 16...Nc2–+ 17.Kd1 Ba3 18.Qf4 (18.g4 Bg6 (18...Rb2?! 19.Rb2 Be4 20.Qe4 Ne3 21.fe3 Bb2 22.Qf5 Qf5 23.gf5=) 19.Ba3 Rb1 20.Kc2 Qd5 21.Rb1 Be4 22.Qe4 Qe4 23.Kc1 Rd8–+) 18...Rfe8 (18...Rb2?! 19.Rb2 Ne3 20.fe3 Bb2 21.Rf1=; 18...Bb2?! 19.Kc2 c5 A) 20.Rb2 Qa4 21.Kb1 Be4 (21...Qe4?! 22.Qe4 Be4 23.Ka1=) 22.d3 Rb2 23.Kb2 c4–+; B) 20.Bb5 ab5 21.Rb2–+) 19.Bf3?? (19.d3 Na1 20.Nd6 (20.Ra1 Bb2 21.Nd6 Ba1 22.Nf5 Rb1 23.Kd2 Rh1–+) 20...Qd6 21.Qd6 Bd6 22.Kd2 Nb3 23.Kc2–+) 19...Qe6 (19...Rb2?! 20.Rb2 Bb2 21.Nd6 Ne3 22.fe3=; 19...Bb2 20.Nd6 Na3 21.Ne8 Bc2 22.Ke1–+) 0–1. marekt – the_great_omni, gameknot.com, 2015.

6.ba6 A) 6...Ra6 A1) 7.cd5 Rb6 8.Qc2 Nd5 9.Nc3 Nb4 10.Qb1 0-0 11.Nf3 g6; A2) 7.Nc3 d4 (7...Rb6 8.Na4 Rb4 9.a3 Rc4 10.Nf3 Nc6 11.Bc4 dc4) 8.Nd5 Nc6 9.Nf3 Ba3 10.Rb1 0-0 11.Ba3 Ra3; A3) 7.c5 Bc5 (7...Be7 8.Nf3 e4 9.Ba6 Na6 10.Ne5 Nc5 11.0-0 Qd6) 8.Ba6 Na6 9.Be5 Nb4 10.d4 Bf5 11.dc5 Nd3; B) 6...dc4 7.Nf3 (7.Bc4 Na6 8.Nf3 e4 9.Ng5 0-0 10.Nc3 Nc5 11.Qc2 Bf5; 7.ab7 Bb7 8.Nf3 e4 9.Ne5 Be5 10.Be5 Nc6 11.Bb2 0-0) 7...e4 (7...Na6 8.Ne5 0-0 9.Bc4 Be6 10.Qe2 Nb4 11.0-0 Nc2) 8.ab7 Bb7 9.Ne5 Be5 10.Be5 Nbd7 11.Bf4 Nd5; C) 6...0-0 7.ab7 Bb7 8.cd5 Nbd7 9.Nc3 e4 10.f3 Nc5 11.fe4 Nce4; D) 6...Na6 D1) 7.cd5 0-0 (7...Nb4 8.Nc3 Bf5 9.Rc1 0-0 10.Qb3 Bd3 11.Nf3 Qe8) 8.Nc3 Bf5 9.Nf3 Nb4 10.Rc1 Nd3 11.Bd3 Bd3; D2) 7.Nf3 e4 (7...Bf5 8.a3 0-0 9.Nc3 Nc5 10.Nd5 Nd5 11.cd5 f6) 8.Nd4 0-0 9.Nc3 dc4 10.Bc4 c5 11.Ndb5 Be5; D3) 7.Nc3 0-0 (7...d4 8.Nb5 0-0 9.Nf3 Re8 10.Be2 Nc5 11.ed4 ed4) 8.cd5 Bf5 9.Nf3 Nb4 10.Rc1 Nd3 11.Bd3 Bd3.

6.Nc3 A) 6...ab5 A1) 7.Nb5 Nc6 (7...0-0 8.cd5 Nd5 9.Qb3 Be6 10.Bc4 Be7 11.Nf3 Nc6) 8.Nf3 0-0 9.cd5 Nd5 10.Bd3 Be6 11.Nd6 Qd6; A2) 7.Nd5 0-0 (7...Be6 8.Nf6 Qf6 9.cb5 Nd7 10.Qh5 0-0 11.Nf3 Ba2) 8.Nf6 Qf6 9.cb5 Be6 10.Qh5 Nd7 11.Nf3 Ba2; B) 6...0-0 B1) 7.Nd5 ab5 (7...Nbd7 8.a4 Nd5 9.cd5 ab5 10.ab5 Ra1 11.Qa1 Re8) 8.Nf6 Qf6 9.cb5 Nd7 10.Nf3 Qg6 11.h4 e4; B2) 7.Nf3 d4 (7...ab5 8.Nd5 bc4 9.Bc4 Nc6 10.0-0 Bf5 11.Qe2 Ra5) 8.ed4 ed4 9.Nd4 Bf4 10.Nce2 Re8 11.f3 ab5; B3) 7.cd5 ab5 (7...e4 8.Qc2 Re8 9.Nh3 Be5 10.d4 ed3 11.Bd3 ab5) 8.Bb5 Bd7 9.Bc4 Na6 10.Nge2 Nb4 11.a3 b5; C) 6...dc4 C1) 7.Nf3 ab5 (7...0-0 8.Bc4 ab5 9.Nb5 Nc6 10.0-0 Bg4 11.Qc2 Bf3) 8.Nb5 Nc6 9.Bc4 0-0 10.0-0 Bg4 11.Qc2 Bf3; C2) 7.Bc4 ab5 (7...0-0 8.Nf3 ab5 9.Nb5 Nc6 10.0-0 Bg4 11.Qc2 Bf3) 8.Nb5 Nc6 9.Nf3 0-0 10.0-0 Bg4 11.h3 Bh5; D) 6...d4 D1) 7.Nd5 0-0 (7...ab5 8.ed4 bc4 9.Bc4 0-0 10.Qf3 Nc6 11.Nf6 Qf6) 8.Nf6 Qf6 9.Nf3 ab5 10.cb5 Nd7 11.Be2 Qg6; D2) 7.Na4 ab5 (7...de3 8.fe3 ab5 9.cb5 Nbd7 10.Nf3 0-0 11.Be2 e4) 8.cb5 c5 9.Qc2 Nbd7 10.b6 0-0 11.Qb3 Ne4; D3) 7.ed4 ed4 8.Qe2 Be6 9.Ne4 ab5 10.Nf3 0-0 11.Nf6 Qf6.

6.cd5 0-0 A) 7.Nf3 ab5 (7...e4 8.Bf6 Qf6 9.Nd4 Be5 10.Nc3 Bd4 11.ed4 Qd4) 8.Nc3 b4 9.Nb5 e4 10.Ng5 Re8 11.d3 Bf5; B) 7.Nc3 ab5 (7...e4 8.Qc2 Re8 9.Nh3 Be5 10.d4 ed3 11.Bd3 ab5) 8.Bb5 Bd7 9.Bc4 Na6 10.Nge2 Nb4 11.a3 b5.

6.cd5 ab5 A) 7.Nf3 Nd5 (7...b4 8.Ne5 0-0 9.Qf3 Re8 10.Nc4 Bg4 11.Bf6 Qc8) 8.Bb5 c6 9.Bc4 Nd7 10.Bd5 cd5 11.Nc3 Ra5; B) 7.Bb5 c6 (7...Bd7 8.Nc3 0-0 9.a4 Na6 10.Nf3 e4 11.Nd4 Nb4) 8.dc6 Nc6 9.Nc3 0-0 10.Nge2 Be6 11.0-0 Qb6.

6.cd5 Nd5 7.Nc3 (7.Qb3 Nb4 (7...Nf6 8.Nf3 0-0 9.Be5 ab5 10.Bb5 Nc6 11.Bc6 bc6) 8.Bc3 Be6 9.Qb2 Nd5 10.Nf3 Nd7 11.Be5 Ne5; 7.Nf3 ab5 (7...0-0 8.Qb3 Nb4 9.a3 Be6 10.Qa4 Nd5 11.Nc3 Nd7) 8.Bb5 c6 9.Bc4 Nd7 10.Bd5 cd5 11.Nc3 Ra5) 7...Nc3 (7...Nf6 8.Nf3 0-0 9.Bd3 ab5 10.Nb5 Nc6 11.0-0 h6) 8.Bc3 ab5 (8...0-0 9.Qh5 ab5 10.Nf3 b4 11.Be5 g6) 9.Bb5 c6 (9...Nd7 10.h4 c6 11.Be2 h6) 10.Be2 0-0 (10...Nd7 11.Qc2 Nc5) 11.Qc2 Re8 12.Nf3 (12.Bd3 g6+=) 12...e4 13.Nd4 Qg5 14.g3 Bh3 (14...Na6 15.f3 Nb4 16.Bb4 Bb4 17.0-0–/+) 15.f4 ef3 (15...Qe7 16.a4–/+) 16.Nf3 Qh6 17.Kf2 Nd7 18.Rhb1 Nf6 19.Kg1 Ng4 (19...Nd5 20.Qd3–/+) 20.Qd3 (20.Qc1 b5+=) 20...Nh2 (20...Ne3!? 21.de3 Qe3 22.Qe3 Re3–/+) 21.Nh2+= Bg3 22.Nf3 Rad8 23.Bd4 Bg4 24.e4 Bf3 25.Qf3 Qh2 (25...Bh2 26.Kg2 Rd4 27.Rb7 Rde4 28.Qf7 Kh8 29.Bh5 Qd2 30.Kh3 Qe3 31.Qf3–+) 26.Kf1 Rd4 (26...Rd4 27.Rb7 f5–+) 0–1. marre (2180) – KERCH (2650), Rated game, 5m + 0s, 2010.

6.cd5 Bg4 A) 7.Qb3 Nbd7 (7...ab5 8.h3 Bd7 9.Bb5 Na6 10.Nf3 Nc5 11.Bd7 Qd7) 8.Nc3 0-0 9.Nf3 ab5 10.Bb5 e4 11.Nd4 Nc5; B) 7.f3 Bd7 8.Nc3 ab5 9.Nb5 0-0 10.Nd6 cd6 11.e4 Ba4; C) 7.Nf3 ab5 (7...e4 8.h3 Bd7 9.Nd4 Nd5 10.Qc2 Qe7 11.Nc3 Nc3) 8.Bb5 c6 9.dc6 Nc6 10.h3 Bd7 11.Nc3 0-0.

6.Nf3 0-0 A) 7.Be5 Be5 (7...ab5 8.Bf6 Qf6 9.Nc3 bc4 10.Nd5 Qg6 11.Bc4 Nc6) 8.Ne5 ab5 9.cb5 Qd6 10.d4 Nbd7 11.Nd3 Ne4; B) 7.Nc3 d4 8.ed4 ed4 9.Nd4 Re8 10.Be2 Bf4 11.Nf3 ab5; C) 7.cd5 ab5 (7...e4 8.Bf6 Qf6 9.Nd4 Be5 10.Nc3 Bd4 11.ed4 Qd4) 8.Nc3 b4 9.Nb5 e4 10.Ng5 Re8 11.d3 Bf5.

6.Nf3 ab5 7.cd5 (7.c5 Bc5 8.Ne5 0-0 9.d4 Bb4 10.Nc3 c6 11.Bd3 Nbd7) 7...Nd5 (7...0-0 8.Nc3 b4 9.Nb5 e4 10.Ng5 Bf5 11.d3 Re8) 8.Bb5 c6 9.Bc4 Nd7 10.Bd5 cd5 11.Nc3 Ra5.

6.Nf3 dc4 7.ba6 e4 (7...Na6 8.Ne5 0-0 9.Bc4 Be6 10.Qe2 Nd5 11.0-0 Nab4) 8.ab7 Bb7 9.Ne5 Be5 10.Be5 Nbd7 11.Bf4 Nd5.

6.Nf3 dc4 7.Nc3 Bg4 (7...0-0 8.Bc4 ab5 9.Nb5 Nc6 10.0-0 Bg4 11.h3 Bh5) 8.h3 Bf5 9.Bc4 0-0 10.g4 Bg6 11.g5 Ne4.

6.Nf3 dc4 7.Bc4 0-0 8.Nc3 ab5 9.Nb5 Nc6 10.0-0 Bg4 11.h3 Bh5.

6.Nf3 dc4 7.Bc4 ab5 8.Bb5 c6 9.Be2 Nbd7 10.Nc3 e4 11.Nd4 0-0.

6.Nf3 dc4 7.Bc4 e4 8.Nd4 Be5 9.0-0 0-0 10.Qc1 Re8 11.a4 Be6 12.Be2 c5 13.Ne6 Bb2 14.Nd8 Bc1 15.Nb7 Nfd7 16.Rc1 Ra7 17.Nd6 Re6 18.Nf5 g6 19.Ng3 f5 20.Nc3 Ne5 21.Nd5 Rd7 22.Nf4 Red6 23.Rc5 Rd2 24.Re5 Kf7 25.ba6 Na6 26.Ba6 Rd1 27.Rd1 Rd1 28.Nf1 Ra1 29.Bb5 Kf6 30.Rc5 Kg5 31.Rc7 Rf1 32.Kf1 1–0. axtur777 – iGamerX, lichess.org, 2019.

6.Nf3 e4 7.Nd4 dc4 (7...ab5 8.Nb5 Nc6 9.Bf6 Qf6 10.N1c3 Bf5 11.Nd5 Qd8) 8.Bc4 0-0 9.Nc3 Be5 10.a4 Bd4 11.ed4 ab5.

5.c4 b6

6.c5 bc5 7.f4 (7.Nf3 e4 8.Ne5 0-0–/+) 7...ef4–+ 8.Nf3 (8.ef4 0-0–+) 8...fe3 9.Bd3 ed2 10.Nbd2 Qe7 11.Qe2 Qe2 12.Be2 0-0 13.Bf6 gf6 14.Rc1 a6 15.ba6 Na6 16.a3 Re8 17.Kd1 Bd7 18.Nb1 (18.Ne1–+) 18...Ba4 19.Ke1 Bf4 20.Rd1 Bd1 21.Kd1 c4 22.Rf1 Be5 23.Nfd2 (23.g3 Rab8 24.Kc1 Bb2 25.Kd1 Nc5–+) 23...Rab8 24.Rf3 Nc5 25.g3 (25.Nc3 Rb2 26.Bf1 Nb3 27.Nb3 cb3–+) 25...Na4 26.Kc1 Bd4 27.Bd1 (27.Kd1 c5 28.h4 Rb2–+) 27...Re1 28.Rf4 (28.h4–+) 28...Be3 29.Rg4 Kf8 30.Nc3 Nc3 (30...Nc3 31.Rc4 Rd1 32.Kc2 dc4 33.Nc4 Rc1 34.Kd3 Bh6–+) 0–1. Pierred (2100) – Spitfire69 (2525), Rated game, 2005.

6.cd5 a6 7.Nc3 0-0 8.Nf3 e4 9.Ng5 Bf5 10.Qa4 Be5 11.Bc4 (11.ba6 Bc3 (worse is 11...Nd5 12.Nge4 Na6 13.Ba6 Be4 14.Qe4 Bc3 15.dc3 Ra6 16.Rd1+/–) 12.Bc3 h6+=) 11...Nbd7 (11...h6!? 12.d4 ed3+=) 12.ba6= Nc5 13.Qc2 Bc3 14.Qc3 h6 (14...Na4 15.Qe5 Nb2 16.Qb2 Nd5=) 15.Nh3 (15.Qe5 Qd7 16.Nh3 b5=) 15...Na4+= 16.Qc2 Nb2 17.Qb2 Nd5 18.Rc1 Bh3 19.gh3 Nf6 20.Qb5 Qd6 21.d4 ed3 22.Bd3 Rfd8 23.Rd1 Qe6 24.Qc4 Qh3 (24...Qe5!?=) 25.Qc7+= Qg2 26.Rf1 Rac8 27.Qg3 (27.Qb6? Rd3 28.Qb1 Rd1 29.Qd1 Qh2–+) 27...Qc6 28.Rg1 Ne8 29.Qe5 Qa4 30.Qe4 Qa5 31.Ke2 Kf8 32.Rd2 Qh5 33.Qf3 Qh2 34.Rb1 Qd6 35.Qe4 Nf6 36.Qb4 Nd5 37.Qd6 Rd6 38.Ke1 Ne7 39.Be4 Rd2 40.Kd2 Rd8 41.Ke2 Nc8 42.Rc1 Na7 43.Rc7 Nb5 44.Rb7 Ra8 45.Bc6 Ra6 (45...Nc3 46.Kd2 Na2 47.Rb6 Rd8 48.Kc2 Rc8+–) 46.Bb5 Ra2 47.Kf3 Rc2 48.Rb6 Rb2 49.Rb8 Ke7 50.Rb7 Kf6 51.Kg3 g5 52.f4 Rb3 53.Rf7 Kg6 54.f5 Kf7 55.Bc4 Kf6 56.Bb3 Kf5 57.Bc2 Kf6 58.Kg4 Ke6 59.Be4 Ke5 60.Bh1 Kf6 61.Kh5 Kg7 62.e4 Kh7 63.Bf3 Kg7 64.e5 Kh7 (64...Kf7 65.Bg4 (65.Kh6?! Ke6=) 65...Kg7 66.e6+–) 65.e6 (65.Be4!? Kg7+–) 65...Kg7 66.Bg4 Kf8 (66...Kf6 67.Kh6 Ke7 68.Kg7+–) 67.Kh6 Ke8 68.Kg5 Ke7 69.Bf5 Kf8 70.Kf6 Ke8 71.Bg6 Kd8 72.e7 1–0. Taulien,Hans_Juergen – Henrich,Guenter, remoteschach.de, 2001.

6.cd5= Nd5 7.Bc4 Nf6 8.Qb3 0-0 9.Nf3 Ne4 (9...e4!? 10.Ng5 Qe7=) 10.Bd5 (10.Ne5 Qf6 11.Nf7 Qf2 12.Kd1 Qg2+/–) 10...Nc5+= 11.Qc2 Re8?? Black prepares e4 (better is 11...Nb7+=) 12.Ba8+– e4 13.Be4 (13.Nd4 Nd3 14.Ke2 Nb2 15.Qb2 Be5+–) 13...Ne4 14.Nc3 (14.0-0 Bg4 15.Nd4 Nc5+–) 14...Bf5 (14...Nf6 15.0-0+–) 15.Ne4 Be4 16.Qc3 (16.d3 Bd5+–) 16...f6 (16...Bf8 17.Qd4+–) 17.Ng5 Threatening mate... how? 17...Bd5 (17...Be5 18.d4 fg5 19.de5 Bg2+–) 18.Nf3?? (better is 18.Qd3!? fg5 19.Qd5 Kf8+–) 18...Qc8?? (18...Be4 19.d3 Bb7+–) 19.h4 (19.0-0!? Qg4 20.h3 Qg6+–) 19...Qg4 20.Ke2 (better is 20.Qd4!? Be4 21.Qc4 Kf8 22.Qf1+/–) 20...Qg2 Threatening mate: Bxf3 21.Nd4 Qg4 22.f3 Qg2 23.Kd3 Qg6 24.Ke2 Qg2 25.Kd3 Nd7 (25...Qg6 26.e4 Re4–+) 26.Rhg1 (26.Rag1 Qf2 27.Nf5 Ne5 28.Kc2 g6+/–) 26...Ne5 (26...Qh3 27.Kc2+/–) 27.Kc2 Be4?? (better is 27...Qh2+/–) 28.fe4+– Qe4 29.Kd1 (29.d3 Qe3 30.Rg7 Kh8+–) 29...Qh4 (29...Nd3 30.h5+–) 30.Rg7! Kf8 (30...Kg7 Decoy to g7 31.Nf5 A double attack) 31.Rg1 Qh5 32.Kc2 c5 (32...a6 33.Ba3 Ng4 34.Bd6 cd6 35.ba6+–) 33.bc6 Bc5 (33...Rc8 34.Ba3 Nf7 35.Raf1+–) 34.Ba3 Qf7 (34...Ng6+–) 35.Bc5 bc5 36.Qc5 Qe7 37.Qe7 (better is 37.Ne6! Kf7 38.Rg7 Ke6 39.Re7 Re7+–) 37...Re7 38.Kd1 (better is 38.Rab1 f5+–) 38...Rc7 (38...h6+–) 39.Ne6 Ke7 40.Nc7 Nc6 41.Nb5 (41.Rg7!? Kd6+–) 41...a6 42.Nc3 Nb4 43.Rg7 Ke6 44.Rh7 Nd3 45.Rb1 Nf2 46.Ke2 Ng4 47.Rb6 (47.Rg7 Kf5 48.e4 Ke5 49.Rg4 f5+–) 47...Kf5 48.Ra6 Kg6 49.Rb7 (49.Raa7!? Kf5+–) 49...Nh6 50.a4 Ng4 51.a5 Ne5 52.Nd5 Ng4 53.Rf6! Nf6 54.Nf6 Kf6 55.a6 (55.a6 Ke5 56.d4 Kf5 57.a7 Kg5 58.e4 Kf4 59.a8Q Ke4 60.Rb5 Kd4 61.Qd5 Kc3 62.Qc5) 1–0. Labitte,Alain – Thomas,Alice, Bethune–D, 2001.

6.cd5 Nd5 7.Qf3 Be6 8.Bc4 Bb4? (better 8...c6!? 9.Nc3 Nc3 10.Be6 0-0=) 9.Be5 0-0 10.Ne2 c6 11.Bd5 (better 11.Nf4 Nf4 12.Qf4 Bc4 13.Qc4+–) 11...Bd5?? (better 11...Qd5 12.Qd5 cd5+=) 12.Qg4+– f6 13.Bb8 (13.Bb8 Bc5 14.Bf4 cb5 15.a3+–; 13.Qb4?! a5 14.Qg4 fe5 15.bc6 Nc6+=) 1–0. Silent Move (2115) – kenobi87 (1740), redhotpawn.com, 2014.

6.Nf3 Nbd7 7.Nc3 dc4 8.Bc4 h6 9.Qb3 0-0 10.Nd5 Nd5 11.Bd5 Qe8 12.Ba8 Nc5 13.Qd1 Nd3 14.Kf1 Nb2 15.Qb3 Be6 16.Qb2 Qa8 17.Ne5 f6 18.Nc6 a6 19.a4 ab5 20.ab5 Qc8 21.Nd4 Re8 22.Ne6 Re6 23.d4 c6 24.bc6 Qc6 25.Rg1 Qc4 26.Qe2 Qd5 27.Ke1 Bb4 28.Kd1 Qb3 29.Qc2 Qd5 30.Rb1 Bf8 31.Kd2 Rc6 32.Qb3 Qb3 33.Rb3 Bd6 34.h3 Kh7 35.f4 Bc7 36.Rc1 Rc1 37.Kc1 Bd8 38.Kd2 g5 39.f5 h5 40.g4 h4 41.e4 Kg7 42.Rb5 Kf7 43.e5 fe5 44.de5 Bc7 45.Kd3 Be5 46.Re5 Kf6 47.Kd4 b5 48.Rb5 Kf7 49.Rb6 Kf8 1–0. axtur777 – LEE91, lichess.org, 2019.

5.c4 dc4

6.Bc4 Nbd7 7.d4 A) 7...Nb6 8.Bb3 e4 9.Ne2 a6 10.Nbc3=+; B) 7...e4 8.Nc3 Nb6 9.Bb3 0-0 10.Nge2=+; C) 7...0-0 8.Ne2 Nb6 9.Bb3 e4 10.Nbc3=+.

6.Bc4 Be6 7.Be6 fe6 8.Nf3 0-0 9.Qb3 Qe7 10.Nc3 Nbd7= 11.d4 (11.Qc2 Nc5 12.d3 Rad8=) 11...ed4=+ 12.ed4 Bb4 (12...Nd5 13.Rb1=+) 13.0-0= Bc3 14.Bc3 Nd5 15.Bb2 N7f6?? (better 15...Qf6=) 16.Ba3+- Qd7 17.Bf8 Rf8 18.Ne5 Qd6 19.a3 c6 (19...Nf4 20.Nf3+-) 20.bc6 bc6 21.Rac1 Rb8? (21...Nf4 22.Rfe1+-) 22.Qa4 (22.Rc6 Rb3 23.Rd6 Kf8+-) 22...Ne4 (22...Nf4 23.Rc2+- (23.Nc6?! Ne2 24.Kh1 Ng4+=; 23.Rc6?! Qd5 24.Nf3 Ne4+-)) 23.Rc6 Qe7 24.Rc2 (24.Qa6 Re8+-) 24...Rf8 25.Qd7 Qh4 (25...Qd7 26.Nd7 Rd8+-) 26.Qe6 Kh8 27.Qd5 (27.Nf7 Kg8 28.Nh6 Kh8 29.Qg8 Rg8 30.Nf7) 27...Nf6 (27...Ng5 28.f4 Nh3 29.gh3+-) 28.Nf7 (28.Rc8 Qh2 29.Kh2 g6 30.Rf8 Kg7 31.Rf6 Kf6 32.Qf7 Kg5 33.f4 Kh6 34.Kg3 a6 35.Rh1) 28...Rf7 29.Qf7 (29.Rc8 Ng8 30.Qf7 Qh2 31.Kh2 a6 32.Qg8) 29...h6+- 30.Qg6 Ng8 31.Rc7 (better 31.Rc8 Qf6 32.Qe8 Kh7 33.Qg8 Kg6+-) 31...Qe7 (31...Qd4 32.Rc8 Qd7+-) 32.Re7 (32.Re7 Ne7 33.Qf7 Nf5 34.Qf8 Kh7 35.Qf5 Kh8 36.Re1 g5 37.Qd7 g4 38.Re8) 1-0. ClayPigeons (2110) - EasyPoints4U (1980), Rated Bullet game, lichess.org, 2021.

6.Bc4 Bg4 7.Qc2 Nbd7 8.Ne2 Nb6 9.Bb3 Rc8 10.Nbc3 0-0 11.Ng3 c5 12.a4 c4 13.Ba2 Nbd5 14.Nd5 Nd5 15.Qe4 (15.Bb1!? Qh4 16.Nf5 Bf5 17.Qf5=) 15...Nf6+= 16.Qc2 (16.Qb7? Rc7 17.Qa6 Bb4–+) 16...Be6 17.Bb1 g6 18.Ne4 Ne4 19.Qe4 Re8 20.Qb7 (20.Be5? Bf5 21.Qf3 Be5 22.Bf5 Ba1 23.Bc8 Qc8–+) 20...Bb4 21.Bc3 Bd5 22.Qa7 Ra8 23.Qa8 Qa8 24.Bb4 Bg2 25.Rg1 f5 (25...Bf3 26.Bc3=) 26.a5 (26.d3 cd3 27.Bd3 Qd5+=) 26...f4 (26...Rb8 27.Ba2 Bd5 28.b6+=) 27.b6+/– Be4 (better is 27...Bf3!?+/–) 28.Be4+– Qe4 (28...Qe4 29.a6 fe3 30.fe3 Qh4 31.Kd1 Qh2+/–). Otte,Marco – Hofstra,Hotze, Ext.Wag3vsBennekom2, 1998.

6.Bc4 0-0

7.Qb3 Nbd7 8.d4=+ ed4 9.Bd4 Ne5 10.Nd2 Qe7 (10...Nc4 11.Qc4 Be6 12.Qc3–/+) 11.Ngf3=+ Bg4 (11...Nc4 12.Nc4 Bb4 13.Bc3 Bc3 14.Qc3=+) 12.Be2 (12.Ne5 Be5 13.Be5 Qe5=) 12…c5 (12...Nf3 13.Bf3 Bf3 14.Nf3 Bb4 15.Kf1=+) ½–½. Neuwald,Volker (1780) – Drews,Ruediger (1955), Baden–ch HT4, 1994.

7.Qb3 Nbd7–/+ 8.d4 Qe7 9.Nf3 (9.Ne2 ed4 10.Nd4 Ne5+=) 9...Bb4 (9...e4 10.Nfd2+=) 10.Ke2 (10.Bc3 Bc3 11.Nc3 e4=) 10...ed4 (10...e4 11.Ng5 Bd6 12.Ba3–/+) 11.Bd4+= Bd6 (11...Nb6 12.Bd3+=) 12.Nbd2 Ne5 (12...c5 13.bc6 bc6 14.Rhd1+=) 13.Ne5 Be5 14.Be5 Qe5 15.h3 b6 (15...Bf5 16.Rhd1+=) 16.Nf3= Qc5 (16...Qe7 17.Qc3=) 17.Rac1+= Qh5 18.g4 Ng4 (18...Bg4 19.hg4 Qg4+–) 19.hg4 Qg4 20.Bd5 (better is 20.Rcg1+–) 20...Be6 21.Rc7 (21.Qd3 Bf5 22.e4 Rae8+–) 21...Rad8 22.Bc4 (22.Be6 fe6 23.Rg7 Kg7+–) 22...Rd6 (22...Rd7 23.Rg1 Rc7 24.Rg4 Bg4 25.Bd5+–) 23.Rg1 (23.Rh4 Qg6+–) 23...Qf5 (23...Bc4 24.Qc4 Qf5 25.Nd4 Qh5 26.Ke1+–) 24.Be6 Re6 25.Rg5 (25.Qb1 Qd5+–) 25...Qf6 26.Qc3 Qc3 27.Rc3 h6 28.Re5 (28.Rd5 Re7+–) 28...Rd6 (28...Re5 29.Ne5 Ra8 30.Nd7+–) 29.Rc7 Ra8 30.Ree7 a6 (30...Rf6 31.Ra7 Ra7 32.Ra7+–) 31.ba6 (better is 31.Rf7 g5 32.Rg7 Kh8 33.Rh7 Kg8 34.Ne5 ab5 35.a3+–) 31...Ra6 32.Ra7 b5 (32...Ra7 33.Ra7 Rc6 34.Nd4+–) 33.Rf7 Ra2 34.Ra2 Kf7 35.Ra7 Kf6 36.Nd2 (better is 36.Rb7+–) 36...h5?? (better is 36...Rb6+–) 37.Ne4 Kg6 (37...Ke5 38.Nd6 Kd6 39.Rg7 Kd5+–) 38.Nd6 (38.Nd6 h4 39.Nb5+–) 1–0. Labitte,Alain – Crepin,Jimmy, Bethune–D, 2001.

7.Qb3 Nbd7 8.Nf3 e4 9.Nd4–/+.

7.Qb3 Nbd7 8.Nf3 Qe7 9.Nc3 (9.0-0 Nb6+=) 9...e4 10.Nd4 Nc5 (10...Ne5 11.Be2+=) 11.Qc2 Bd7 (11...Be5 12.Na4 Na4 13.Qa4+=) 12.Nb3 (12.0-0 Qe5 13.f4 Qh5=) 12...Rfe8 (12...Nb3!? 13.Qb3 Bf5+=) 13.Nc5= Bc5 14.a4 (14.0-0 Bd6 15.f3 ef3 16.Rf3 Qe5=) 14...Bd6 (14...Rad8 15.0-0+=) 15.d3= ed3 16.Bd3 h6 (16...Rad8 17.a5=) 17.h3 (17.0-0 Qe5 18.g3 Qh5=) 17...Rad8 (17...c6 18.Rd1+=) 18.0-0 (18.a5!?=) 18...Qe5–/+ 19.g3 Bh3 20.Rfe1 (20.Ne4 Qh5 21.Be2 Ng4–/+) 20...Qg5 (20...Qe6 21.Ne2–/+) 21.Bf1 (21.Ne4!? Ne4 22.Be4–/+) 21...Bf5 (21...Bf1 22.Kf1 Ng4 23.Kg2–+) 22.Qe2 Ne4 23.Bg2 Nf2! 24.Qf2 (24.Qf2 Bg3 Decoy; 24.Kf2 Bg3 Double attack) 24...Bg3 25.Qf3 Be1 26.Re1 Rd2 27.Bc1? (better is 27.Ba1–+) 27...Rc2 28.Ne2 Be4 29.Qf2 (29.Qh3 Re6 30.Nf4 Bg2 31.Ne6 fe6 32.Qe6 Kh7–+) 29...Re6 (29...Re6 30.Rf1 Rf6–+) 0–1. jaddwarrior (2095) – jana84 (2455), ChessWorld.net, 2016.

7.Qb3 Bf5 8.d4 ed4 9.Bd4 Nbd7 10.Nd2 Nc5 11.Qb2 Na4 12.Qb3 Nc5 13.Qb2 Nd3 14.Bd3 Bd3 15.Bf6 Qf6 16.Qf6 gf6 17.a4 Bb4 18.Rc1 (18.Ra2 a6 19.Rb2 Ba5+=) 18...Ba5 (better is 18...a6!?–/+) 19.Ne2 Rad8 (19...a6!?=) 20.Nd4+= Kg7 (20...Rd7 21.Kd1+=) 21.N4b3 (21.Kd1!?+/–) 21...Bb4= 22.Rc7 Rc8 23.Rb7 Rc2 (23...Rfd8!? 24.Kd1 Bd2 25.Nd2 Be4=) 24.Rd7+/– (24.Ra7 Bd2 25.Kd1 Rd8 26.Nd2 Bg6–+) 24...Bf5 25.Rd4 Bd2? (better is 25...Bc3 26.Kd1 Rc8+/–) 26.Rd2+– Rc3 27.Nd4 Bg6 28.Ke2 Ra3 29.h4 h5 30.Rhd1 Ra4 31.Rc1 Rb8 32.Rb2 f5 33.Kf3 Kf6 34.Kf4 Rb7 35.g3 Kg7 36.Rc6 Rb6 37.f3 (37.Rb6 ab6 38.Rc2 Ra7+–) 37...Bh7 (37...f6 38.Rc7 Kh6 39.Re7+–) 38.Rb1 Bg8 (38...Rb7 39.Rcc1+–) 39.Ke5 (39.Rb6!? ab6 40.Rc1 f6+–) 39...f6 40.Kf4 (40.Kd6 f4 41.gf4 Rb7+–) 40...Bd5 (40...Kg6 41.Rb6 ab6 42.Rd1+–) 41.Rc5 Ba8 (41...Bf7 42.Rcc1+– (42.Rf5?! a6+–)) 42.Kf5 Rd4 (42...Kh6 43.Rc7 Rd4 44.ed4 Bf3 45.Ra7+–) 43.ed4 Bf3 44.Kf4 Ba8 (44...Bg4 45.Rc7 Kg6 46.Ra7+–) 45.Rh5 (45.Ra1!? Kg6 46.Ra7 Bh1+–) 45...Kg6 46.g4 Bb7 (46...Re6 47.d5 Rb6 48.Rf5+–) 47.Rc5 White prepares h5 47...a6 (47...Rd6 48.Rd1+–) 48.h5 Kh6 49.d5 (49.d5 Ba8 50.Rd1+–; 49.Rc7 ab5 50.Re1 Rc6 51.Rb7 Rd6 52.Kf5 Rd5 53.Re5 Rd6 54.Re8 Rd5 55.Kf6 Rd6 56.Kf5 Rd5 57.Re5 Re5 58.de5 b4 59.g5 Kh5 60.Rh7) 1–0. pierred – eduardo562001, Yahoo, 2005.

7.Nc3 a6 8.d4 ed4 9.Qd4 ab5 10.Bb5=+.

7.Nc3 Nbd7 8.Nge2 Nb6 9.Bb3 a6 10.d4=+.

7.Nc3 Bg4 8.Nge2 Nbd7 9.d4 Nb6 10.Bb3=+.

7.d4 ed4 8.Qd4 a6 9.Nf3 ab5 10.Bb5=+.

7.d4 ed4 8.Bd4 c5 9.Bb2 a6 10.Nc3=+.

7.d4 ed4 8.Bd4 Be6 9.Be6 fe6=+.

7.d4 Nbd7 8.Ne2 Nb6 9.Bb3 e4 10.Nbc3=+.

7.d4 e4 8.Nc3 c6 9.Qc2 Qa5 10.a4=+.

7.Ne2 c6=+.

7.Ne2 Ng4 8.0-0 (better is 8.Ng3!?=+) 8...Nh2–+ 9.Kh2 (9.Bf7 Rf7 10.Kh2 Qh4 11.Kg1 e4–/+) 9...Qh4 10.Kg1 Qc4 11.a4 (11.Nbc3 Bf5–+) 11...Qh4 (11...Qd3 12.Nbc3–+) 12.d3 (12.f4 Nd7–+) 12...Bg4 13.Nd2?? (better is 13.Qc2–+) 13...e4! 14.g3 (14.de4 Qh2) 14...Qh5 15.Re1 (15.Nf4 Bf4 (15...Bd1?! 16.Nh5 Bh5 17.Ne4–+) 16.Qc1 Bf3 17.Nf3 ef3–+ (17...Qf3?! 18.ef4 Qd3 19.Qc7=)) 15…ed3 (16.f3 de2 17.Qe2 Bf5–+) 0–1. Zaichenko,Andrey – Dats,Dmitry (1685), FICGS, 2008.

7.Nf3 e4 8.Nd4 c5 9.bc6 bc6 10.h3 a6 11.Nc3 c5 12.Nb3 Nc6 13.Nd5 Ne5 14.Nf6 Qf6 15.0-0 Bh3 16.f4 ef3 17.Be5 Qe5 18.Qf3 Be6 19.Be6 Qh2 0–1. RichardSommer (2120) – markfreiman (2120), lichess.org, 2020.

7.Nf3 e4 8.Ng5 Bf5 9.Qc2 (9.f3 h6 10.Nf7 Rf7 11.Bf7 Kf7 12.fe4 Ne4 13.Qh5 g6 14.Qh6 Nf6=+) 9...h6 10.Nf3 Bh7 (10...a6 11.Nc3–/+) 11.Nd4 Nbd7 12.a4 (12.0-0!?=+) 12...Ne5–/+ 13.0-0 Nfg4 14.h3 Qg5 15.Be2 (15.hg4 Ng4 16.Re1 Qh4–+) 15...Nf3! 16.Bf3 (16.Nf3 ef3 Combination; 16.Bf3 Bh2 Double attack (16...Bh2 Decoy); 16.gf3 Ne3 Mate attack) 16...Qe5 (16...ef3 17.Nf3 Bc2 18.Ng5 Ne3 19.fe3 hg5 20.Ba3=) 17.g3 ef3 (17...Nf2 18.Rf2 ef3 19.d3 Qg3 20.Kf1 Qh3 21.Kg1 Bh2 22.Rh2 Qg3 23.Kf1 Bd3 24.Qd3 Qh2 25.Nd2=+) 18.Nf5–/+ Qf5 19.Qf5 Bf5 20.hg4 Bg4 21.Nc3 (21.Ba3 Rfd8–/+) 21...Rfd8 (21...Rad8 22.d4–/+) 22.Ne4 Bb4 23.d4 (23.Bd4 f5 24.Rfb1 Be7–/+) 23...Bf5 (23...a6 24.Rfc1 Bf5 25.Nc5 ab5 26.ab5 Ra1 27.Ba1–/+) 24.Nc5 (24.Bc3 a5 25.Bb4 Be4–/+) 24...Bc5 25.dc5 Rd5 (25...Rd2 26.Bc3 Re2 27.a5–/+) 26.Rfc1 (26.Rfd1 Rc5 27.Rdc1 Rc1 28.Rc1 Rc8–/+) 26...a6 (26...Bd3 27.Bd4–/+) 27.c6 bc6 28.ba6 Ra6 29.Rc4 (29.Bd4 f6–/+) 29...Bd3 (29...Be6 30.Bc3–/+) 30.Rd4 f6 31.Ra3 (31.a5 Rd6–/+) 31...Be2 (31...Bf5 32.Bc3–/+) 32.Bc3 White plans a5 32...Kf7 33.a5 Ke6 34.Re4 Kd6 35.Ra1 c5 (35...h5 36.Re8–/+) 36.Re8 (36.Rg4 Rg5 37.Rg5 hg5–/+ (37...fg5?! 38.Bg7 Kd5 39.g4=+)) 36...Kc6 (36...Rg5 37.e4–/+) 37.Rb1 (37.e4 Rd7–/+) 37...Bd3 (37...Bc4 38.e4 Rd7 39.Re1–+) 38.Rb2 (38.Re1 Rd7–/+) 38...Rh5 39.Re6? (39.Rd2 Bf1 40.Re6 Kb5–+) 39...Kd5 40.Ra6 (40.Re8 Bf1 41.Rd2 Kc4–+) 40...Ba6 41.Rb1 (41.Rd2 Kc4 42.Rc2 Kb3–+) 41...Bc8 42.e4 (42.a6 Ba6 43.Ra1 Bd3–+) 42...Ke4 43.Re1 (43.Rb5 Kd3 44.Rb3 Kc2–+) 43...Kd3 44.Re3 (44.Ba1 c4 45.Re3 Kc2 46.Rc3 Kb1 47.Rc4 Ka1 48.Ra4 Kb2–+) 44...Kc2 45.Ba1 (45.Be1 Re5–+) 45...Rd5 46.Rc3 (46.Kh2–+) 46...Kb1 47.Ra3 (47.a6 Ka1 48.a7 Bb7–+) 47...Rd1 48.Kh2 Rf1 49.g4 (49.Bf6 Rf2 50.Kg1 Rg2 (50...gf6 51.Kf2 Kb2 52.Ra4+=) 51.Kh1 gf6 52.Rf3 Ra2 53.Rb3 Kc2–+) 49...Rf2 50.Kg3 Ra2 51.Ra2 Ka2 52.Bc3 Kb3 (52...Kb3 53.Be1 Bb7–+) 0–1. Myrberg,Johnny – Woelfelschneider,Peter, email 4AMM–F, 1998.

7.Nf3 e4 8.Ng5 h6 9.Nf7 Rf7 10.Qb3 (10.Bf7 Kf7 11.f3 Kg8+=) 10...Qe7–/+ 11.Bf7 (11.f3 ef3 12.gf3 Bd7–/+) 11...Qf7 12.Qf7 Kf7 13.0-0 (13.f3 ef3 14.gf3 a6–/+) 13...Ng4 (13...a6!?–/+) 14.h3 Nh2 (14...Nf6 15.Bf6 gf6 16.Nc3+=) 15.Rc1 (15.Rd1 Bf5=) 15...g5 (better is 15...Bf5!?+=) 16.Na3 (better is 16.Nc3 Bf5 17.Ne2+=) 16...h5? (better is 16...Be6+=) 17.Nc4+– Nf3? (better is 17...Bh3 18.Nd6 cd6 19.Rc7 Bd7 20.Kh2 b6+–) 18.gf3 ef3 (18...Bf5 19.Nd6 cd6 20.fe4 Be4 21.Rc7 Ke6+–) 19.Nd6 cd6 20.Rc8 1–0. DEFFM – GuestTNzu, freechess.org, 2018.

7.Nf3 Qe7 8.d3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.0-0 Nb6 13.Bb3 Be6 14.Nbd2 Bb3 (14...Ra8 15.Bb2=+) 15.Qb3= Ra8 16.Nc4 Increases the pressure on e5 16...Nbd7 17.Bb2 e4 18.de4 Ne4 19.Qc2 Ndf6 20.Nd6 Nd6 (20...cd6 21.Rc1+=) 21.Bf6+= gf6 22.Nd4 Ra5 23.Qe2 Qd7 The pressure on the isolated pawn grows 24.Qf3 Nb5? (better 24...Kg7!?+/-) 25.Nf5+- Kf8 26.Qg4 Qd5?? (better 26...Qd8+-) 27.Rd1 (27.Rd1 Nd4 28.e4+- (28.Qd4?! Qf5 29.Qd8 Kg7=; worse 28.Nd4 h5 29.Qc8 Kg7+-)) 1-0. onur604 (2320) - Oberlappen (2220), Casual Rapid game, lichess.org, 2021.

7.Nf3 Bg4 8.Be2 Re8 9.0-0 Nbd7 10.Nc3 Qe7 11.h3 Bf3 12.Bf3 e4 13.Be2 Qe5 14.g3 Qg5 15.Kh2 Ne5 16.Rg1 Qf5 17.Kg2 h5 18.f4 ef3 19.Bf3 Nf3 20.Qf3 Qc2 21.Bc1 Bb4 22.Nd5 Nd5 23.Qd5 Rad8 24.Qb7 Bd2 25.Kh1 Be3 26.Be3 Re3 27.Rac1 Qf5 28.Kh2 Rd2 29.Rg2 Rg2 30.Qg2 Qd3 31.Qg1 Qd2 32.Kh1 Re2 33.Ra1 Kh7 34.a4 g6 35.Qf1 Kg7 36.Rd1 Qb2 37.Rd7 Qc2 38.Qf7 Kh6 39.Qh7 Kg5 40.Rd5 Kf6 41.Qh8 Ke6 42.Qg8 Kf6 43.Qf8 Ke6 44.Qg8 Kf6 45.Qh8 Ke6 46.Qg8 ½–½. RichardSommer (2105) – Potapych18 (1980), lichess.org, 2020.

7.Nf3 Bg4 8.h3 Bf3 (8...Bh5 9.g4 Bg6 10.Ne5 Be5 11.Be5=) 9.Qf3 c6 10.0-0 (10.Nc3 a6 11.bc6 Nc6=) 10...Qe7 (10...e4 11.Bf6 ef3 12.Bd8 Rd8 13.gf3=) 11.e4 (11.a4!?+=) 11...cb5=+ 12.Bb5 a6 13.Bc4 Nc6 14.a3 (14.Nc3 Nd4 15.Qd3 Rac8=+) 14...Rac8 (14...b5 15.Ba2–/+) 15.d3 (15.Nc3!?=+) 15...b5 16.Bb3 Nd4 17.Qd1 (17.Bd4 ed4 18.a4 Nd7–/+) 17...Nb3 (17...Bc5 18.Nd2–/+) 18.Qb3 Rc7 (18...Nh5 19.a4 Nf4 20.ab5 ab5 21.Kh2–/+ (21.Qb5?? Rb8 22.Qa6 Rb2–+)) 19.Nd2 (19.a4 Rb8=+) 19...Rfc8 (19...Nh5 20.g3=+) 20.Nf3 (20.a4 Nd7 21.ab5 ab5=) 20...h6 (20...Nh5 21.a4 b4 22.g3=+) 21.Rfe1 Rc2 22.Rac1 Rc1 23.Bc1 b4 24.a4 a5 25.Nh4 Rc3 26.Qd1 Qe6 27.Qf3 Bc5 28.Qg3?? Ne4!–+ 29.Re4 Rc1 30.Kh2 b3 31.Re2 Ba3 32.d4 b2 33.Re5 Qd7 34.Nf5 Bf8 35.Nh6 Kh7 36.Rh5 gh6 37.Qd3 Kh8 38.d5 b1Q 39.Qd4 Kg8 (40.Re5 Rh1 41.Kg3 Qg6 42.Kf4 Qg2–+) 0–1. tschulz – Wormatia08, grosses Mannschaftsturnier, 2005.

7.h3 a6 8.a4 c6 9.Nc3+= Bc5 (9...ab5 10.ab5 Ra1 11.Qa1+=) 10.Nge2 Bf5 (10...Re8 11.0-0+=) 11.d3 (11.d4 ab5 12.ab5 Ra1 13.Ba1 Bd6=) 11...Qd6 (11...ab5 12.ab5 Ra1 13.Ba1+=) 12.Ng3 (12.d4 ed4 13.Nd4 Bg6=) 12...Bc8 (12...Be6 13.0-0 Bc4 14.dc4=) 13.0-0= ab5 14.ab5 Ra1 15.Qa1 Qc7? (15...Qe7 16.Nce4 Ne4 17.Ne4 cb5 18.Be5 bc4 19.Bg7+=) 16.Nge4 (better is 16.Nce4 cb5 17.Be5+–) 16...Nbd7+= 17.Nf6 (17.bc6 Qc6 18.Nf6 Nf6+/–) 17...Nf6 18.Na4 (18.bc6 bc6 19.Nd1 Re8=) 18...Bd6= 19.b6 (19.f4 ef4 20.Bf6 gf6 21.bc6 fe3 22.Qf6 Qe7 23.Qe7 Be7=) 19...Qe7 20.e4 (20.d4 e4=) 20...Re8 (20...Nh5 21.Bc1=) 21.Bc3 (21.Re1 Nh5=) 21...h6 (21...Nh5 22.Bd2+=) 22.Rb1 (22.Rd1 Bd7=) 22...Be6 (22...Bd7 23.Nb2=) 23.Be6 (23.Be5 Be5 24.Qe5 Bc4 25.Qe7 Re7 26.dc4 Ne4=) 23...Qe6 24.Bb4 (24.Nb2 Nh5+=) 24...Nd7 (24...Ra8!? 25.Bd6 Qd6–/+) 25.Bd6 (25.Qa3 Bb4 26.Qb4 Rc8=) 25...Qd6+= 26.Qc3 Qg6 (26...Ra8 27.Rb4+=) 27.Nc5 Nc5 28.Qc5 Re6 (28...Qg5 29.Ra1=) 29.Ra1 Kh7 (better is 29...Qf6!?=) 30.Ra7+/– Rd6 31.Qc3 (31.Rb7!? Rd3 32.Qc4 Rd1 33.Kh2+=) 31...Rd7 32.Qe5 Rd3 33.Rb7 Rh3 34.Rc7 (34.Rd7!? Rh5 35.Qf4+/–) 34...Rh5= 35.Qf4 Rg5 (better is 35...Rb5!?=) 36.g3+/– Rg4 (36...Rb5!? 37.b7 f6+/–) 37.Qf7+– Qf7 38.Rf7 Re4 39.b7 (39.Rc7 Re6+–) 39...Re8 (39...Rb4!?+/–) 40.f4+– Rb8 (40...h5 41.f5 Kh6 42.f6 gf6 43.Rf6 Kg5 44.Rc6 Re1 45.Kg2+–) 41.Kf2 (41.f5 h5 42.Kf2 Kh6+–) 41...Kg6 42.Rc7 c5 43.Ke3 Kf6 44.Ke4 Ke6 (44...c4 45.Kd5 c3 46.Kc6+– (46.Rc3?! Rb7 47.Ke4 Re7 48.Kf3 g6=)) 45.Rg7 Kd6 46.Rg6 (46.f5 Re8 47.Kd3 Kc6+–) 46...Kc7 47.Kd5 Kb7 48.Kc5 Rc8 49.Kb5 (49.Kd5 h5+–) 49...Rc3 (49...Rh8 50.Rg7 Kc8 51.Kc6+–) 50.Rg7 (better is 50.g4 Rf3 51.Rg7 Kc8 52.Kc6+–) 50...Rc7?? (better is 50...Kc8+–) 51.Rg6 (better is 51.Rc7 Kc7 52.Kc5+–) 51...h5?? (51...Rc3 52.g4 Rf3 53.Rg7 Kc8+–) 52.Rb6+– Ka7 53.f5 (53.Rh6 Rg7+–) 53...Re7 (53...Re7 54.Re6 Rb7 55.Kc6 Rb3+–). Sie – Cpu, AI Factory's Chess, 2016.

6.Bc4 a6

7.a4 0-0 8.Qc2 (better is 8.Nc3+= Bg4 9.f3 Bc8 10.Nge2+=; 8.d4 ab5 9.ab5 Bb4 10.Nc3+=) 8...Nc6?? (better is 8...ab5 9.ab5 Ra1 10.Ba1 Nbd7+=) 9.bc6+– bc6 10.Nc3 g6 (10...Qd7 11.Ne4 Ne4 12.Qe4+–) 11.Nge2 Bb7 (11...Rb8 12.0-0+–) 12.0-0 c5 13.f4 (13.e4 Rb8+–) 13...e4 (13...Rb8 14.Rab1+–) 14.Ng3 Qe7 (14...Rb8 15.Rab1 Re8 16.a5+–) 15.Nd1 h5 (15...Rfb8 16.Qc3 Kg7 17.Nf2+–) 16.Qc3 (16.Nf2 h4 17.Bf6 Qf6 18.Nge4 Qf5+–) 16...Kg7 (16...h4 17.Ne2 Kg7 18.Nf2+–) 17.Nf2 Bc8 (17...Rfb8+–) 18.Nfe4 1–0. Giache,Gianluca – Aannevik,Bjarne, corr ICCF WSTT/3/06/1, 2006.

7.a4 ab5 8.ab5 Ra1 9.Ba1=+ Nbd7 10.Nf3=+.

7.a4 Nbd7 8.Nf3 Nb6 9.Bb3 e4 10.Ng5 0-0 11.Nc3 Qe7 12.Qc2 Pawn e4, live or die! 12...Bf5 13.f3 Nfd5 14.Nge4 (worse is 14.Nd5 Qg5 15.g3 ef3–/+; worse is 14.Bd5 Nd5 15.Nge4 Nb4=; 14.Nce4 ab5 15.a5 Nc4 16.Bc4 bc4 17.Qc4 Be4 18.Ne4 Be5 19.Qd5 Bb2+/–; worse is 14.fe4 Qg5 15.ef5 Qg2+=) 14...Nb4 15.Qb1 Qh4 16.Ke2 Nd7 (worse is 16...Bh2 17.a5 Nd7 18.Ba3+–) 17.Qe1 Qh6 18.g4 Be6 19.Be6 Qe6 20.Qb1 Ne5 21.Nd6 cd6 (worse is 21...Qd6 22.Ne4 Qd3 23.Qd3 Ned3 24.Bc3+–) 22.Qe4 Nbd3 23.Ba3 Nc5 (23...ab5 24.Nb5 Rad8+–) 24.Qd5 Qe7 25.d4 Ng6 26.Kd2 Rfd8 27.h4 (27.dc5? dc5 28.ba6 ba6–+) 27...ab5 28.ab5 (28.dc5? dc5 29.ab5 Rd5 30.Nd5 Qe5–+) 28...Qe8 29.h5 (29.dc5 dc5 30.Bc5 Rd5 31.Nd5 Rd8–+; 29.Bc5?! Ra1 30.Ra1 dc5 31.Qc5 Nh4+/–) 29...Ne7 30.Qc4 Nd7 31.h6 g6 32.Qd3 (32.Bd6 Nb6 33.Qb3 Rd6=) 32...Nc5 33.Qc2 (33.dc5 dc5 34.Bc5 Rd3 35.Kd3 Rd8 36.Bd4 Nd5+=; 33.Bc5?! dc5 34.Ne4 Nd5+/–) 33...Nd7 34.Bd6 Nf6 35.Ra8 Ra8 36.g5 Nf5 37.Bf4 Nd7 38.Nd5 Rc8 39.Qb2 Ne7 40.Ne7 (40.Ne7 Qe7 41.Rc1+–) 1–0. Van Rooijen,Peter – Hort,Wolfgang, WCCF, 2003.

7.Qa4 A) 7...Nfd7 8.Qc2 ab5 9.Bb5 c6 10.Be2=+; B) 7...0-0 8.d4 Nbd7 9.Be2 ed4 10.Bd4=+.

7.ba6 Na6 8.d4 e4 9.Ne2 c6 10.0-0=+.

7.ba6 Na6 8.Ne2 Ng4 9.e4 c6 10.0-0=+.

7.ba6 Na6 8.Nf3 Qe7 9.d3 0-0 10.Nbd2 b5 (10...c6 11.a4=+) 11.Bb5= Rb8 12.a4 c6 13.Ba6 Ba6 (< 13...Rb2 14.Bc8 Rc8 15.0-0+/–) 14.Qc2 Nd5 15.0-0 (15.Bc3!?=) 15...Nb4=+ 16.Qc3 Nd3 17.Ba3 (17.Qc6? Nc5 (17...Rb2 18.Qa6 Nb4 19.Qa5+=) 18.Rfd1 Rb2–+) 17...Ba3 18.Ra3 c5 19.Rd1 e4 20.Ne1 Rfd8 21.Raa1 Ne1 22.Re1 Rd5 23.Reb1 Rbd8 24.Nf1 Bd3 25.Rb2 Qe6 26.a5 c4 27.Rb6 R5d6 28.Rd6 Rd6 29.Ng3 Ra6 30.Nh5 Qg4 (30...Qg6 31.Qe5 h6 32.Nf4=) 31.Qe5 h6 (31...Ra8 32.Nf4=) 32.Nf4 (32.Qe8 Kh7 33.Qf7 c3=) 32...Qd7 33.h3 f6 34.Qc5 Kh7 35.Ra3 f5 36.Qe5 (< 36.Nd3 ed3 37.Ra1 Rc6–/+) 36...Qc8 37.h4 Qf8 38.h5 Qc8 (38...Qa3 39.Qf5 Kg8 40.Qc8 Kf7 41.Qb7 (41.Qa6 Qe7+–) 41...Kf8 42.Qa6+–) 39.Kh2 Bc2 40.Kg3 Qf8 41.Ra2 Bb3 42.Rd2 Ra7 43.Ne6 Qf6 44.Qb8 1–0. Taulien,Hans_Juergen – Schulz,Hans_Juergen, RSS7E–13 remoteschach.de, 2003.

7.Nc3 A) 7...c6 8.a4 ab5 9.ab5 Bg4 10.Nge2=; B) 7...0-0 8.Nge2 c6 9.a4 Bg4 10.0-0=+.

7.d4 ab5 8.Bb5 c6 9.Be2!? Nbd7 10.Nd2=+.

7.d4 ab5 8.Bb5 c6=+ 9.Be2 e4 10.Nc3=+.

7.d4 ab5 8.Bb5 c6 9.de5 (9.Be2!? Nbd7 10.Nd2+=) 9...Bb4–+ 10.Bc3 Qd1 11.Kd1 Ne4 (11...Bc3!? 12.Nc3 Ng4–/+) 12.Bb4+= Nf2 13.Ke2 Nh1 14.Bd3 Be6 (14...Nd7 15.Bd6 f6 16.Nf3 Ne5 17.Be5 fe5 18.Nbd2=) 15.Nf3 Ra2 (15...Ba2? 16.Nc3+–) 16.Ra2 Ba2 17.Nbd2 (17.Nc3 Bb3–/+) 17...Nd7 18.Ne4 b5 19.Nd6 Kd8 20.Bc3 Kc7 21.Ba5 Nb6 22.Be4 f6 23.Bb6 Kb6 24.Nd4 fe5 25.Nc6 Bb1 26.Bf3 Ra8 27.Ne5 Ra2 28.Ke1 b4 29.g4? (better is 29.Ndc4 Kc5 30.Nd2–+) 29...Rh2 30.Ndc4 (30.Ne8 g5–+) 30...Kc5 31.Nd2 Bc2 32.g5 (32.Nd7 Kb5 33.Be2 Ka4 34.Nc5 Ka3–+) 32...Ng3 33.Ng4 Rh5 34.g6 hg6 35.Bb7 (35.Nf2 Re5 36.Ng4 Re8–+) 35...b3 36.Nb3 Bb3 37.Bg2 Bd5 38.e4 Ne4 39.Be4 Be4 40.Nf2 (40.Kf2–+) 40...Bf3 41.Nd3 Kd4 42.Kf2 Kd3 43.Kg3 (43.Kf3 Rf5 44.Kg2 Ke3 45.Kg3 Rg5 46.Kh4 Kf4 47.Kh3 Kf3 48.Kh2 Rh5 49.Kg1 g5 50.Kf1 Rh1) 43...Ke2 44.Kf4 Rf5 45.Kg3 Ke3 46.Kh3 (46.Kh2 Kf2 47.Kh3 Rh5) 46...Kf2 47.Kh4 Rh5 0–1. Pierred (2150) – Marckox (2430), Rated game, 2005.

7.d4 ed4 8.Bd4 ab5 9.Bb5 c6 10.Bd3=+.

7.d4 e4 8.Nc3 ab5 9.Nb5 Bb4 10.Nc3=+.

6.Bc4 c6

7.Qa4 A) 7...Nfd7 8.Qc2 cb5 9.Bb5 a6 10.Bc4=+; B) 7...0-0 8.d4 cb5 9.Bb5 Nbd7 10.de5=+; C) 7...Bd7 8.Nf3 cb5 9.Bb5 Nc6 10.Qb3=+.

7.Qb3 0-0 8.a4 Nbd7 9.bc6 bc6 10.Qc2–/+.

7.Nc3 a6 8.a4 ab5 9.ab5 Bg4 10.Nge2=.

7.d3 A) 7...a6 8.ba6 Na6 9.Nf3 b5 10.Bb3=+; B) 7...0-0 8.a4 Bg4 9.Nf3 a6 10.Nbd2=+; C) 7...cb5 8.Bb5 Bd7 9.Qb3 Na6 10.Ba6=+.

7.d4 e4 8.Qb3 0-0 9.Nc3 a6 10.a4=+.

7.Ne2 A) 7...cb5 8.Bb5 Bd7 9.Nbc3 0-0 10.0-0=+; B) 7...a6 8.a4 0-0 9.Nbc3 Bg4 10.0-0=+; C) 7...0-0 8.a4 Nbd7 9.d4 cb5 10.ab5=+.

7.Nf3 A) 7...e4 8.Ng5 0-0 9.Nc3 Bf5 10.Qc2=; B) 7...cb5 8.Bb5 Bd7 9.Qb3 Nc6 10.0-0=+.

5.c4 c5

6.cd5 Nd5 7.Bc4 Nb6 8.Bb3 (8.Na3 0-0+=) 8...Bf5 (8...c4 9.Bc2+=) 9.d3 0-0 10.e4 (10.Nf3 Qf6+=) 10...Bg6 (10...Bd7 11.Nc3+=) 11.h4 (11.Nf3 Bh5+=) 11...h5 (11...c4 12.h5 Be4 13.de4 cb3 14.Qb3+=) 12.g4= c4 13.gh5 Be4 (13...Bb4 14.Nc3 Qd4 15.Nge2 Bh5 16.Nd4 Bd1 17.Nc6 bc6 18.Bd1 cd3 19.Bb3–+) 14.de4+= cb3 15.ab3 (15.Qb3 Qf6+=) 15...Bb4 (15...Qf6 16.Nf3=) 16.Bc3 Qd1 17.Kd1 Rd8 18.Ke2 Bc3 19.Nc3 N8d7 (19...Rc8 20.Rc1=) 20.Nf3 Rac8 21.Rhc1 Nc5 22.Nd5 (22.Ne5? Nb3 23.Na2 Na1 24.Ra1 Re8–+) 22...Nd5 23.ed5 f6 (23...e4 24.Ng5 f6 25.Nh3 Nb3 26.Rc8 Rc8 27.Ra7 Nd4 28.Kf1+/–) 24.b4 (24.Ra7 Ne4 25.Rc8 Rc8 26.Rb7 Nc3 27.Ke3 Nd5 28.Ke4 Nf4+/–) 24...Ne4+/– 25.Rc8 Rc8 26.Ra7 Nd6 27.Nd2 Rc3 (27...Nb5 28.Rb7 Nc3 29.Kf3 Nd5 30.Ne4+/–) 28.f3 f5 Black intends e4 29.b6 Kf7 30.Ra5 e4 31.Rc5 Ra3? (better is 31...ef3!? 32.Nf3 Rb3 33.Ne5 Kf6+/–) 32.fe4+– fe4 33.Rc7 Kf6 (33...Kg8 34.Rd7 Nf5 35.Nc4+–) 34.Rd7 Nf5 35.Ne4 (35.Rb7?! Ng3 36.Ke1 e3+/–) 35...Ke5 36.Nd2?? (36.Nc5 Ra2 37.Kd3 Ra3 38.Kc4+–) 36...Nd4+/– 37.Kf2 Ra2 38.Rb7 (better is 38.Rg7 Rd2 39.Ke3+/–) 38...Nb3?? (better is 38...Rd2 39.Ke3 Rb2 40.Rg7 Nf5 41.Kd3 Rb4+–) 39.Re7+– Kd5 (39...Kd6 40.b7 Rd2 41.Ke3 Ke7+–) 40.b7 Rd2 41.Kg3 (41.Kg3 Rd3 42.Kg2 Rd2 43.Kf1 Rd1 44.Re1 Nd2 45.Ke2 Re1 46.Ke1 Nf3 47.Kf2 Nh4 48.b8Q+–) 1–0. Sluka,Radek (2380) – Ramik,Zdenek (2280), Moravia–chT, 1999.

6.cd5 Nd5 7.Be2 0-0 8.Nf3 (8.Nc3!? Be6 9.Nf3+=) 8...e4–/+ 9.Ne5 (9.Ng1 Qg5 10.g3 Rd8–/+) 9...Be5 (better is 9...Qg5!? 10.Nc4 Qg2–+) 10.Be5+= Qg5 11.Bg3 Qf6 12.Na3 Bf5 (12...Nc3 13.dc3 Qc3 14.Kf1 Qa3 15.Qd5+=) 13.0-0= Qg6 (13...Rd8 14.Rc1=) 14.f3 Nd7 15.Nc4 N7b6 (15...ef3 16.Bf3 Bc2 17.Qc1+=) 16.Ne5 (16.Nd6!? ef3 17.Bf3+/–) 16...Qe6 17.fe4 Be4 18.Qb3 Qe7 (18...Rad8 19.d4 c4 20.Bc4=) 19.a4 Nb4 (19...Qe6 20.Bg4 f5=) 20.Rf2 (20.a5 Nd7 21.Nd7 Qd7+=) 20...Bd5 (20...Bc2!? 21.Qa3 Ba4+= (worse is 21...Na4 22.Nf7 Qe6 23.Raf1+=)) 21.Qc3+= White is in command 21...Be6 22.e4 Rad8 23.a5 Nd7 24.Nc4 f6?? (better is 24...Nb8+=) 25.Bd6+– Qf7 (25...Qe8 26.d4 b6 27.Rd1+–) 26.Bf8 (better is 26.d4!? a6 27.d5 ab5 28.Bf8 Nf8 29.de6 Ne6+–) 26...Qf8 (26...Nf8 27.b6 ab6 28.Nb6+–) 27.e5 (27.Ra4 a6 28.ba6 Na6+–) 27...Qe7 28.ef6 Nf6 29.d3 (29.Qe5 Nc2 30.Rc1 Nd4+–) 29...Nbd5 (29...Nfd5 30.Qb2+/–) 30.Qe5+– Qd7 31.b6 Bg4? (better is 31...ab6 32.ab6 Bg4+–) 32.Qg3 (better is 32.ba7 Re8 33.Bg4 Ng4 34.Qf5+–) 32...Be2= 33.Re2 The game is finished by a kings attack 33...Nb6 34.ab6 (34.Nb6 Qd4 Theme: Double Attack) 34...Qd4= A double attack 35.Qe3 Qa1 36.Re1 Qa4 37.Qe6 Kh8 Black threatens.... what? 38.Ne5 Do you see the mate threat? 38...Qd4 (better is 38...Rf8!? 39.ba7 Qa7 40.Nf7 Kg8 41.Nd8 Kh8+/–) 39.Kh1+– Rf8 (39...h5 40.Nf7 Kh7 41.Nd8 Qd8 42.Qf5 Kg8 43.ba7+–) 40.Nf7 Rf7?? (40...Kg8 41.ba7 Qd5 42.Nd8 Qe6 43.Ne6 Ra8+/–) 41.Qf7 ab6 42.Re8! (42.Re8 Ne8 43.Qe8) 1–0. Kreuzer – Pek, tt Verb'Liga, 1981.

6.cd5 Nd5 7.Nf3 Qe7 8.d3 a6 9.a4 (9.ba6 Na6 (worse is 9...Ra6 10.d4 ed4 11.Ba6 ba6 12.0-0+=) 10.Nbd2 f6+=) 9...ab5 10.ab5 Ra1 11.Ba1 0-0 12.Be2 Nd7 (12...Bd7 13.Qa4+=) 13.0-0 Nc7 (13...b6 14.Nc3 Bb7 15.Nd2+=) 14.d4 (14.Nc3 Nf6=) 14...e4 (14...cd4 15.ed4 e4 16.Nfd2+=) 15.Nfd2= Nb6 (15...Qh4 16.h3=) 16.Nc4 (16.Qc2 f5=) 16...Nc4 17.Bc4 Bd7 Attacks the isolani on b5 (17...Qg5 18.Qc2 cd4 19.Qe4 de3 20.fe3+=) 18.dc5= Bc5 19.Nc3 Bf5 (19...Be6 20.Be6 Qe6 21.Qc2+/–) 20.Qb3 (20.Qh5 Bg6 21.Qg4 Rd8+=) 20...Bd6 21.Ne2 Ra8 22.Bb2 (22.Nd4 Bd7=) 22...Ne6 (22...Be6 23.Rc1=) 23.Nd4 (23.Ng3 Bg3 24.fg3 Qg5=) 23...Nd4 24.Bd4 Ra3 25.Qb2 Qg5 (25...Be6 26.Be6 Qe6 27.Bg7=) 26.g3 (26.Bd5 Be6 27.Be4 Rb3+=) 26...Bh3= 27.Rc1 Ra8 28.Be2 (28.Qc2 Qf5=) 28...Ba3 (28...Be6 29.Ra1 Rd8 30.f4 ef3 31.Bf3=) 29.Qa1 (29.Ra1 Qe7+=) 29...Qd8= 30.Rd1 Qc8 31.Qb1 (worse is 31.Bg7 Bf8 32.Qe5 Bg7 33.Qe4 Ra1 34.Ra1 Ba1–/+) 31...Qe6 32.Rd2 Bf8 33.Rc2 Rd8 (33...Bd6 34.Qd1+=) 34.Bf1 (34.Rc7!? Qg6 35.Rb7+/–) 34...Bf5 (better is 34...Bf1 35.Qf1 Qf5+=) 35.Bg2?? (35.Rc7 Rd7 36.b6+=) 35...Qg6?? (better is 35...Rd4 36.ed4 e3–+) 36.Rc7+= Rd4 (better is 36...b6!?+=) 37.ed4+– e3 (better is 37...Qb6 38.Rc4 Be6+–) 38.Qe1 (38.Qb2 Qe6 39.Qe2 Qb6 40.Rb7 Qd4 41.Qe3 Qd1 42.Bf1 Be6+–) 38...Qb6 (38...Qd6 39.Rb7 Qd4 40.Qe3 Qa1 41.Bf1+–) 39.Rb7 Qd4 40.fe3 (40.Qe3 Qd1 41.Bf1 Qd5+–) 40...Qe5 41.Kf2 (41.b6 Bc5 42.Ra7 Be4+–) 41...h5 (41...Bc8 42.Rb6+–) 42.Qd2 h4 (42...Bc8 43.Rb6 Qc5+–) 43.Qd5?? (better is 43.Qd4 hg3 44.hg3+–) 43...Qb2+/– 44.Kg1 (better is 44.Kf1 Qb1 45.Ke2+/–) 44...Be6?? (44...Qc1 45.Kf2 Qb2 46.Kf3 Be6+/–) 45.Qd1 h3 (45...Qc3 46.Qf3+–) 46.Bf3 (46.Bf1 Qc3 47.Qf3 g6+–) 46...Bg4 (46...Bc4 47.Bd5 Bd5 48.Qd5 Qc1 49.Kf2 Qb2 50.Kf1 Qb1 51.Ke2 Qc2 52.Qd2 Qc4 53.Kf2+–) 47.Rb8 Bf3?? (47...g6 48.Qf1 Bf3 49.Qf3+–) 48.Qf3 (better is 48.Rf8 Kh7 49.Qf3 Qc1 50.Kf2 Qc2 51.Qe2 Qf5 52.Kg1 Qb1 53.Qf1+–) 48...Qc1 49.Kf2 Qb2 50.Qe2 Qf6 (50...Qe5 51.Ra8 Qd5 52.Re8+–) 51.Kg1 (51.Ke1 Qa1 52.Qd1 Qe5 53.Rf8 Kf8 54.Qd8 Qe8 55.Qe8 Ke8+–) 51...g6 (51...Qa1 52.Qf1 Qe5 53.Qf4+–) 52.Rc8 (52.Re8 Qb6+–) 52...Kg7 (52...Qa1 53.Qf1 Qe5 54.b6 Qe3 55.Qf2+=) 53.Rc6 (53.Qd2 Kg8 54.Qb4 Qa1 55.Kf2 Qa2 56.Ke1 Qa1 57.Ke2 Qa2 58.Kd3 Qd5 59.Kc3 Qe5 60.Kd2 Kh7 61.Rf8 Qf6+–) 53...Qa1 54.Qf1 Threatening mate: Qxa1 54...Qb2 (54...Qe5 55.Qd3 (55.Qh3?! Qe3 56.Kh1 Qe1 57.Kg2 Qe2 58.Kg1 Qe3 59.Kf1 Qf3 60.Kg1 Qe3=) 55...Qa1 56.Kf2+–) 55.Rc1 (55.b6!? Be7 56.Rc7 Qe5+–) 55...Qd2 56.Re1 Bc5 57.Qe2?? (better is 57.Qf2 Qd3 58.g4+–) 57...Be3!!–+ (57...Be3 58.Kf1 Qd5 59.Qb2 Bd4 60.Qd4 Qd4–+). Schwichtenberg,Juergen – Reichert,Rudolf, Hessen–ch Seniors, 2000.

5.c4 c6

6.a4 a6 7.Nc3 0-0 8.Nf3 Nbd7 9.Be2 (9.cd5 cd5 10.Be2 e4+=) 9...Nb6 (better is 9...e4 10.Nd4 dc4 11.bc6 Ne5 12.cb7 Bb7+=) 10.a5? (better is 10.cd5 e4 11.Nd4+=) 10...Nc4–+ 11.Bc4 dc4 12.b6 (12.bc6 bc6 13.Qc2 Rb8–+) 12...Re8 13.h3 (13.Qc2 e4 14.Nd4 Qe7–+) 13...Nd5 (13...Bf5 14.0-0–+) 14.0-0 (better is 14.Ne4 Nb4 15.0-0–+) 14...Nb6?? (better is 14...e4 15.Ne1 Nc3 16.Bc3 Qg5–+) 15.ab6+/– Qb6 (15...e4 16.Nd4+=) 16.Qc2 (16.Ne4 Bb8 17.Qc1 Qb5+/–) 16...f5 (16...Qb3!? 17.Qb1 f6+=) 17.Na4+/– Qb5? (17...Qb3!? 18.Qb3 cb3+/–) 18.Rab1 (18.Rfb1 e4 19.Qc3 Bf8+–) 18...Qb3 19.Qb3 cb3 20.Nb6 Rb8 21.Nc4 Rd8?? (21...Bf8 22.Be5 Be6 23.Bb8 Bc4+–) 22.Nd6 Rd6 (22...e4 23.Nc8 Rbc8+–) 23.Be5 Rg6 (23...Rd3 24.Bb8 Be6 25.Rb2+–) 24.Bb8 1–0. Nikolic,Jovane (1710) – Bicalho,Rafael Cury, Championship da Primeira Categoria do E, 2013.

6.a4 e4 7.d4 g6 8.c5 Be7 9.Nc3 Bf8 10.Nge2 Bg7 11.Nf4 0-0 12.Be2 a6 13.0-0 ab5 14.ab5 Ra1 15.Ba1 Nbd7 16.b6 Nb8 17.Qa4 Ng4 18.Bg4 Bg4 19.Qa7 Qc8 20.Re1 Na6 21.Nce2 g5 22.h3 Bf5 23.Nh5 Bg6 24.Ng7 Kg7 25.Ng3 Kf6 26.Rf1 h5 27.f4 h4 28.fg5 Kg5 29.Ne2 Bf5 30.Nf4 f6 31.Bc3 Kh6 32.Be1 Kg7 33.Bh4 Rh8 34.Bg3 Nb4 35.Qa4 Na6 36.Qd1 Kf7 37.Nh5 Bg6 38.Nf6 Ke7 39.Bd6 Ke6 40.Qg4 Kf7 41.Nd5 Kg7 42.Be5 Kh6 43.Qc8 Rc8 44.Ne7 Re8 45.Ng6 Kg6 46.Rf4 Nb4 47.Re4 Nd3 48.Rg4 Kf5 49.Bf4 Nf4 50.ef4 Re4 51.g3 Rd4 52.Rg5 Ke4 53.h4 Rc4 54.h5 Kd4 55.h6 Rc1 56.Kg2 Ke3 57.h7 Rc2 58.Kh3 Rc1 59.h8Q Rh1 60.Kg2 Rh8 61.f5 Rd8 62.g4 Rd2 63.Kg3 Rd1 64.Rg7 Rg1 65.Kh4 Kf4 66.f6 Rh1 0–1. A_VB – Lawrenzuuu, lichess.org, 2019.

6.a4 Qe7 7.Nc3 (7.cd5 cd5 8.d4 Bb4 9.Nc3 ed4 10.Qd4 Bc5+=) 7...Be6 (7...d4 8.Nce2–/+) 8.Qb3 (8.cd5 cd5 9.Nf3 0-0+=) 8...Nbd7–/+ 9.Be2 (9.bc6 bc6 10.cd5 Rb8+=) 9...0-0 (9...dc4 10.Qc2–/+) 10.Nf3 (10.bc6 bc6 11.Qc2 dc4–/+) 10...Rac8 (10...dc4 11.Qc2–+) 11.d4 (11.bc6 bc6 12.Qc2 Rb8+=) 11...ed4 (11...dc4 12.Bc4 ed4 13.Nd1–+) 12.Nd4 dc4 13.Bc4?? (better is 13.Qc2–/+) 13...Nc5–+ 14.Qa2 Nd3! 15.Ke2?? (15.Bd3 Theme: Deflection from a2 15...Ba2) 15...Bc4 16.Qc4 Nb2 17.Qb3 Bc5 (better is 17...Be5 18.Nf3 cb5 19.Nb5 Rfd8 20.Ne5 Qe5–+) 18.Nc2 Qe6 (better is 18...cb5!? 19.Qb2 b4–+) 19.Qb2–/+ Qc4 20.Ke1 Rfd8 21.Na3 (better is 21.bc6!? Rc6 22.Nb5–+) 21...Qb4–+ 22.Qc2 Nd5 23.Nab1 Be7 24.Ke2 (24.Qd2 Nc3 25.Qc3 Qc3 26.Nc3 Bb4–+) 24...Qc4 (better is 24...cb5 25.ab5 Nc3 (25...Rc3?! 26.Nc3 Nc3 27.Kf3–+) 26.Nc3 Rc3–+ (26...Qc3?! 27.Qc3 Rc3 28.Ra7–+)) 25.Kf3 cb5 (25...Nc3 26.Qc3 Qe6 27.Na3 cb5 28.Qb2–+) 26.Qe4 Nc3 (26...Qc6 27.Nd5 Rd5 28.Ke2–+) 27.Nc3 Bf6 (27...Qc3 28.Qe7 Qc6 29.Kg3 Qg6 30.Kh3 Qf5 31.Kg3–+) 28.Nb5 (28.Qc4 Rc4 29.Nb5 Ba1 30.Ra1 a6–+) 28...Qe4 29.Ke4 Ba1 30.Ra1 a6 (30...Rd2 31.Kf3–+) 31.Nd4 g6 (31...b6 32.Rb1 Rd6 33.h3–+) 32.Rb1 (32.g4 Rd7–/+) 32...Rc7 (32...Rd7 33.Kd3–+) 33.Rb6 Re8 34.Kf3 Ree7 35.Nb3 (35.a5 Rc5 36.Nb3 Rc6–+) 35...Rc4 36.Na5 Ra4 37.Nb7 Re6 (37...a5 38.Nc5 Ra2 39.Ra6–+) 38.Nc5? (better is 38.Re6!? fe6 39.Nc5–/+) 38...Rb6–+ 39.Na4 Rb4 40.Nc5 (40.Nc3–+) 40...Rb6?? (40...a5 41.Nd3 Rb5 42.Ne1–+) 41.Ke4?? (41.Na4 Rf6 42.Ke2–+) 41...Kg7 42.Kd4 f6 (42...a5 43.Kc3–+) 43.Kc4 (43.e4 a5 44.Kc3 Rb5–+) 43...Kf7 44.Na4 (44.h3 a5–+) 44...Rc6 (44...Rb1 45.Nc5–+) 45.Kb3 (45.Nc5 Ke7 46.Kd5 Rd6 47.Kc4 a5–+) 45...Ke6 46.Nc3 f5 47.Ne2 (47.f3 Ke5–+) 47...Kd5 (47...Ke5 48.Nd4 Rb6 49.Ka2–+) 48.Nd4 (48.h3 Rb6 49.Ka3 Kc4–+) 48...Rc1 49.Ne2 Rf1 50.f3 Re1 51.Nc3 Ke5 52.e4 fe4 (52...Kd4 53.Nd5–+) 53.fe4 (53.Ne4 Re2 54.g3 Kd4–+) 53...Re3 (53...Kd4 54.Nd5–+) 54.Kc2 (54.Kc4–+) 54...Rc3 (54...Rc3 55.Kc3 Ke4–+; better is 54...Kd4 55.Na2 Re2 56.Kb3 Rg2–+ (worse is 56...Re4 57.Nc1–+)) 0–1. Neuwald,Volker – Reuter,Peter Ludwig, Baden–ch HT Zell, 1993.

6.Qc2 0-0 7.c5 Bc7 8.Nf3 Qe7 9.a4 Bg4 10.a5 Nbd7 (better 10...cb5!? 11.Bb5 a6–+) 11.a6=+ b6 (11...ba6!? 12.bc6 Nb8=+) 12.cb6+= Nb6 13.bc6 Rfc8 (13...d4 14.Ba3 Bd6 15.Bb5=) 14.Nc3+= Qc5 15.d4 (15.Bb5 Nc4 16.d4 ed4 17.Nd4 Be5+=) 15...Qc6= 16.Ne5 Be5 17.de5 Ne4 18.Rc1 Bf5 19.Bd3 Qg6 (19...Nc4 20.0-0 Ne5 21.Ne4=) 20.0-0+= Nc4?? (better 20...Rc3 21.Bc3 Rc8+=) 21.Nd5+– Kf8 (21...Qg5 22.Bc4 Ng3 23.Qd1 Nf1 24.Qf1+–) 22.Bc4 Bh3 (22...Nc5 23.Qc3 Rab8+–) 23.Ba3 (23.Ba3 Nc5 24.Qg6 hg6 25.gh3+–) 1–0. Silent Move (2115) – macinalli (1865), redhotpawn.com, 2012.

6.Qc2 0-0 7.d3 Bf5 8.Nf3 Nbd7 9.Be2 Rc8 10.a4 (10.cd5!? cb5 11.Qd1–/+) 10...cb5–+ 11.ab5 dc4 12.e4 (better is 12.Nc3 cd3 13.Bd3 Bd3 14.Qd3–+) 12...cd3 13.Qd3 Bb4 14.Nbd2 (14.Kf1 Ne4 15.Qe3 Bc5–+) 14...Be4 (better is 14...Ne4!? 15.Qe3 Rc2 16.Ba3 Bd2 17.Nd2–+) 15.Qb3 Bf3 16.Bf3?? (16.Qb4 Be2 17.Ke2–+) 16...Bd2 17.Ke2 (17.Kf1 Qb6 18.Rd1 Bf4–+) 17...Nc5 (better is 17...e4!? 18.Rhd1 ef3 19.Qf3–+) 18.Qa3 e4 19.Bf6 ef3 20.Kf3 (20.Qf3 Re8 21.Kf1 Qf6 22.Qf6 gf6 23.h4–+) 20...Qf6 21.Ke2 Rfe8 22.Kf1 Nd3! (23.Qf8 Kf8 24.Ra7 Qf2) 0–1. Starr,Albert Martin – Penoyer,Flynn (1825), San Francisco TNM Summer op, 2006.

6.Qc2 0-0 7.Nf3 Qc7 (7...dc4 8.Bc4 cb5 9.Bb5=+) 8.d4 (8.cd5!? Nd5 9.Nc3 cb5 10.Rc1=+) 8...e4–/+ 9.Ne5 (9.c5 ef3 10.cd6 A) < 10...Qd6 11.Ba3 (< 11.gf3 Re8=+) 11...fg2 A1) 12.Bd6?? gh1Q (12...gh1R?! 13.Bf8 Kf8 14.Qc5 Ke8 15.Nd2=) 13.Bf8 Kf8–+; A2) 12.Bg2+/–; B) 10...fg2 11.Bg2 Qa5 (< 11...Qd6 12.Ba3 Qe6 13.Bf8 Kf8 14.Nc3+/–) 12.Nc3 Rd8=) 9...cb5 10.c5 a6 11.Nc3 Be5 (11...Be7!?–/+) 12.de5= Qc5?? (better is 12...Qe5 13.Nb5 Qe7=+) 13.ef6+/– b4 14.fg7 Re8 15.Rc1 bc3 16.Qc3 Qc3 17.Rc3 (17.Bc3 Nc6+=) 17...Be6 (17...f6 18.Rc5+=) 18.Rc7+= b5 19.Bd4 (19.Be2!?+=) 19...Nd7 20.Kd2 Rec8 21.Rc8 ½–½. Kuhlmann,AEJ – Du Bois,J, Justitie PGEM, 1990.

6.c5 Bc5 7.Be5 Nbd7 8.Bf4 0-0 (8...Ne4 9.Nf3=+) 9.Bd3 (better is 9.d4 Bb4 10.Nd2=+) 9...Nh5?? (better is 9...Re8=+) 10.Qh5+– Nf6 11.Qh4 Bd6 12.Bg5 h6 13.Bf6 Qf6 14.Qf6 gf6 15.Ne2 Be5 16.Nbc3 c5 17.Rc1 Be6 18.0-0 b6 19.f4 Bd6 20.f5 Be5 21.fe6 fe6 22.Nf4 Kf7 23.Rf3 Rg8 24.Rcf1 Rg5 25.h4 Rg4 26.h5 f5 27.Ng6 Bc3 28.dc3 Rg5 29.Rh3 (29...a6 30.e4+–; better is 29.c4 d4 30.e4 a6 31.ef5 ef5 32.Rf5 Rf5 33.Rf5 Ke6+–) 1–0. Ginger Prince – dugmak, ChessWorld.net, 2004.

6.c5 Bc5 7.Be5 Qe7+=.

6.c5 Bc7 7.b6 (better is 7.Nf3!? Nbd7 8.d4=+) 7...ab6–+ 8.cb6 Bd6 9.Qb3 Nbd7 10.Nf3 0-0 11.d4 e4 (11...Nb6? 12.de5 Be7 13.ef6 Bf6 14.Bf6 Qf6 A) 15.Qb6 Qa1 16.Bd3 Ra3–/+ (< 16...Qa2 17.0-0=); B) 15.Qc3+–) 12.Nfd2 Nb6 (12...Qb6 13.Ba3 Qb3 A) 14.Nb3?? Ba3 (< 14...Ra3 15.Na3 Ba3 16.Be2–+) 15.Na3 Ra3–+; B) 14.ab3–+) 13.Nc3 (13.Ba3 Ba3 14.Na3 Nbd7–/+) 13...Nbd7 14.Be2 Ne8 (better is 14...b5–+) 15.0-0-0? (better is 15.a4–+) 15...b5 16.f3 b4 17.Ncb1 ef3 18.gf3 f5 (18...Qa5 19.Rdg1–+) 19.e4 Nb6 (19...fe4 20.fe4 Qa5 21.Rdf1–+) 20.e5 Be7 21.f4 c5 22.dc5 Bc5 23.a3 ba3 24.Na3 Be6 25.Nf3 Qc8 26.Kd2 Rb8 27.Qc2 Bb4 28.Ke3 Nc4?? 29.Nc4–/+ dc4 30.Bd4 Bc5 31.Rb1 Bd4 32.Nd4= Rb1 33.Rb1 Bd5 34.Rb5 Be4?? 35.Qc4+– Qc4 36.Bc4 Kh8 37.Rb8 h6 38.Bb5 g5 39.Re8 Re8 40.Be8 Kg7 41.fg5 hg5 42.Bd7 Kg6 43.Bf5 Bf5 44.Nf5 Kf5 45.Kd4 Ke6 46.h3 Kf5 47.Kd5 Kf4 48.e6 Kg3 49.e7 Kh3 50.e8Q g4 51.Qh5 (51...Kg2 52.Qg4 Kf2 53.Ke4 Ke1 54.Ke3 Kf1 55.Qg5 Ke1 56.Qg1) 1–0. stejam (2305) – jupiter (2375), net–chess.com, 2007.

6.d4 0-0 7.de5 Bb4 8.Bc3 Bc3 9.Nc3 Bg4? (better is 9...Ne4 10.Ne4 de4 11.Qd8 Rd8+/–) 10.f3+– Qa5 11.Qd2 (11.ef6 Qc3 12.Ke2 Re8+/–) 11...Nfd7 12.fg4 Ne5 (12...dc4 13.e6 Ne5 14.Qd4 cb5 15.e7+=) 13.cd5 Ng4 14.Be2 Nf6 15.dc6 b6 (15...bc6 16.Rd1 a6 17.ba6 Na6 18.Ba6 Ra6+–) 16.Nf3 Qb4 17.0-0 a6 18.a4 ab5 19.ab5 Ra1 20.Ra1 Ne4 (20...Rc8 21.Ra8 Ne4 22.c7 Nd2 23.cb8Q (23.Nd2?! Qf8 24.Nd5 h6+/–) 23...Nf3 24.Bf3 Rb8 25.Rb8 Qf8 26.Rf8 Kf8 27.Nd5+–) 21.Ne4 Qe4 22.c7 Nc6 23.bc6 Qc6 (23...Qe7 24.Ra7 Qe4 25.Ba6 Qc6 26.Qa2+–) 24.Rc1 Qb7 25.Qd7 h6 26.c8Q Qc8 27.Rc8 Rc8 1–0. Mely (2625) – paavo nurmi, ChessWorld.net, 2003.

6.d4 dc4 7.Bc4 ed4 8.Qd4 a6 9.ba6 Na6 10.Nc3 Qe7 11.Nf3 Bg4 (11...b5 12.Bb3=+) 12.Be2 (12.Rd1 Bc7=+) 12...0-0=+ 13.h3 Bf3 14.Bf3 Nb4 15.Qd2 Rfd8 16.Qe2 Be5 17.0-0 Nd3 18.Rad1 Nb2 19.Qb2 Bc3 20.Rd8 Qd8 21.Qc3 Ra2 22.Rb1 Qa8 23.g3 Ra6 24.Kg2 Nd7 25.Qd4 Nf8 26.Qb2 Ra7 27.Qb6 Nd7 28.Qd4 Nf8 ½–½. Woischke,Norbert – Palmkoeck,William, TKM/SF/02, 2001.

6.d4 dc4 7.Bc4 e4 8.Nc3 0-0 9.Nge2 Nbd7 (9...a6!? 10.a4 Bg4=+) 10.bc6= bc6 11.Ng3 Nb6 12.Be2 Re8 13.0-0 Qe7 14.Qc2 h5 15.Rfc1 (< 15.Nh5 Nh5 16.Bh5 Qh4 17.Bf7 Kf7–/+) 15...h4 16.Nf1 Bf5 17.h3 Nfd5 18.Nd2 Qg5 19.Kh1 (< 19.Nde4 Qg6 20.Qb3 Be4 21.Ne4 Qe4 22.Rc6 Qe6–/+; 19.Nce4 Ne3 20.fe3 Qe3 21.Kf1 Re4 22.Ne4 Be4–+) 19...Qg6 20.a4 Nb4 21.Qd1 a5 22.Ba3 Bf8 23.Bh5 Qe6 24.Be2 Qg6 ½–½. Taulien,Hans_Juergen – Mehlhorn,Uwe, remoteschach.de, 2003.

6.d4 dc4 7.de5 Bb4 8.Nc3 Nd5–/+.

6.cd5 cd5 7.Nf3 Bg4 8.Be2 e4 9.Nd4 Be2 10.Qe2 g6 (10...Nbd7 11.0-0=+) 11.f4 (11.0-0 0-0=) 11...Nbd7=+ 12.Nb3 0-0 13.Bd4 a5 14.a4 Rc8 15.Nc3 (15.0-0 Rc2=) 15...Nc5=+ 16.Nc1 (16.Nc5 Bc5 17.Bc5 Rc5=+) 16...Re8 (16...Ne6 17.Nb3=+) 17.Qf2 (17.0-0 Ne6=+) 17...Ne6=+ 18.N1e2 Bc5 19.Bc5 Nc5 20.0-0 Nh5 21.Nd4 Nd3 22.Qe2 Rc4 23.Qg4 Qd6 24.Nf5 Qc5 25.Nh6 Kg7 26.Nf5 Kh8 27.Ng3? (27.Qh4 Ng7 28.Ng7 Kg7=+) 27...Ng3 (27...Rc3!? 28.dc3 Qe3 29.Kh1 Ng3 30.Qg3 Qg3 31.hg3 Rc8–+) 28.Qg3–/+ d4 29.Ne2 de3 30.de3 Rb4 (30...Qh5 31.Nc1=+) 31.Nd4 (31.Nc1 Rc4 32.Ne2 Rc8=+) 31...Rd4 32.ed4 Qd4 33.Kh1 e3 34.h3 e2 35.Rfe1 Ne1 36.Re1 Re3 (36...Qa4 37.Qg5–+) 37.Qg5 Qd1 38.Qh4 Qa4 39.Qd8 Kg7 40.Qd2 Qe4 41.Kg1 a4 42.Qb2 f6 43.g4?? Rg3 (44.Kh2 Qg2) 0–1. Thrasher,C – Whitten,J, USA Armed Forces–ch, 1990.

6.Nf3 Nbd7 7.d4 e4 8.Nfd2 0-0 9.c5 Bc7 10.a4 Re8 11.Nc3 Nf8 12.Qb3 (12.Be2 Bf5=) 12...h5 (12...Ng4 13.g3=+) 13.Ba3 Ng4 14.h3 (better 14.Be2!?=) 14...Qh4-/+ 15.b6?? (better 15.hg4 Qh1 16.gh5 Qh5 17.Bb4-/+) 15...Qf2-+ 16.Kd1 Ne3 17.Kc1 Bf4 (better 17...Qe1 18.Nd1 Bf4 19.g3 Nf1 20.gf4 Qd2 21.Kb1-+) 18.ba7 (18.Be2 Ne6 19.Qb4-+) 18…Nf1 (18...Nf1 19.Rf1 Qf1 20.Qd1 Bd2 21.Kd2 Qd3 22.Ke1 Qc3 23.Kf1 Ne6-+) 0-1. Arunachala (2210) - alifie (2445), Rated Blitz game, lichess.org, 2018. (=1.c4 c6 2.b4 d5 3.b5 e5 4.e3 Nf6 5.Bb2 Bd6)

6.Nf3 Qe7 (--> 4.Nf3 Qe7 5.e3 Nf6 6.c4 c6).

6.h3 0-0 7.cd5 Nd5 8.Nc3=+.

6.h3 cb5 7.cb5 (7.cd5 b4 8.d4 e4–/+) 7...0-0 8.a4 (8.Nf3 Nbd7=+) 8...a6 (8...Bf5!?–/+) 9.Nf3 Qe7 (9...Re8 10.Be2=+) 10.Be2=+ Bd7 (10...ab5 11.ab5 Ra1 12.Ba1=+) 11.Qb3 (11.Nc3 e4 12.Nd4 Rc8=) 11...ab5 (11...Rc8 12.Nc3 Be6=+) 12.Bb5 (12.ab5!? Ra1 13.Ba1=+) 12...Bb5 (12...Na6 13.Bd7 Nc5 14.Qc2 Ncd7 15.0-0–/+) 13.ab5 Ra1 14.Ba1 Nbd7 15.0-0 Rc8 16.Bb2 Nb6 17.Ba3=+ Ba3 18.Qa3 Qa3 19.Na3 ½–½. Materna,Edmund – Ried,Heinz, Bahn–chS, 2000.

6.a4 0-0

7.Qc2 Qe7 8.d4 (8.Ba3 Ba3 9.Na3 Rd8–/+) 8...ed4 (8...Bb4 9.Kd1 dc4 10.Nf3 cb5 11.ab5–/+) 9.Bd4 c5 10.Bb2 (10.Bf6!? Qf6 11.Nc3=+) 10...d4–/+ 11.Ra3 Bg4 12.Nf3 Nbd7 (12...Bf3 13.gf3 a6 14.Rd3–/+) 13.Nbd2 (13.Be2 Rfe8–/+) 13...Rae8 (13...Bf4!–/+) 14.Be2=+ Ne5 (better is 14...Bf4 15.Nf1 Be5=+) 15.ed4? (better is 15.Rb3!?=+) 15...cd4–+ 16.Rb3 d3! 17.Rd3 (17.Qd3 Nd3) 17...Nd3 18.Qd3 Bf5! 19.Qe3 (19.Qf5 Qe2) 19...Qe3 20.fe3 Re3 (21.Bd4 Re6–+) 0–1. Iosif,Daniela – Weng,Annegret, Bruchkoebel (Women) playoff, 1993.

7.Qc2 Qe7 8.h3 e4 (8...g6 9.Nf3–/+) 9.Ne2 Nbd7 10.f4? (10.bc6!? bc6 11.Nd4–/+) 10...ef3!–+ 11.gf3 Nh5 (11...Ne5 12.Be5 Qe5 13.Nbc3–+) 12.f4 (12.cd5!? cd5 13.h4–+) 12...Qh4–+ 13.Kd1 dc4 (better 13...Ndf6 14.cd5 cd5–+) 14.Na3= Be7 (14...Rd8 15.Nc4 Bb4 16.Ba3–/+) 15.Nc4 (15.bc6!? bc6 16.Nc4= (16.Qc4? Nc5 17.Qc2 Rd8–+)) 15...cb5=+ 16.ab5 Nc5 17.d4 Rd8 18.Nd2 Ng3 19.Ng3 Qg3 20.Kc1 (20.Be2 Ne6 21.Qe4 Bb4=) 20...Qe1 (20...Ne6!? 21.Qe4 Bb4=+) 21.Qd1=+ Qe3 22.Ra3 Qf4 23.dc5 Bc5 24.Rd3 (better 24.Rf3!? Qh6 25.Bc4=+) 24...Be6–/+ 25.Qf3 Qc7 (25...Qa4 26.Qe4 (26.Qb7 Rdc8 27.Rc3 Bb4–+) 26...Bb4 27.Nc4 Qb5 28.Rh2–/+) 26.Kd1 (26.Rd8 Qd8 27.Qc3 Qg5=) 26...Bf8 (better 26...f6!?–/+) 27.Rg1= Rac8? (better 27...f5=) 28.Bd4?? (28.Qf6 Bb3 A) 29.Nb3?? Qc2 30.Ke1 Bb4 (30...Rd3?? 31.Rg7 Kh8 32.Rg4 Bg7 33.Qg7) 31.Nd2 Bd2 32.Kf2 Bg5 33.Be2 gf6 34.Bf6 Rd3 35.Bg5 Rd6–+; B) 29.Rb3 Qc2 30.Ke2 Rd2 31.Ke3 Qb3 32.Ke4 Qc2 33.Kf4 Rf2 34.Kg3 Rf6 35.Bf6 Bd6 36.Kf3 Qf5 37.Ke2 Qe4 38.Kd1 Qc2 39.Ke1 Bb4 40.Bc3 Bc3; C) 29.Ke1 Re8 30.Be2 Re2 31.Kf1+–) 28...Qc1 (28...g6 29.Rc3 Qa5 30.Rc8 Rd4 31.Rf8 Kf8 32.Qe3–/+) 29.Ke2 Bd5?? (better 29...Rc2 30.Qf6 Rd2 31.Rd2 Bc4 32.Kf3 Qf1 33.Rf1 gf6 34.Rg1 Bg7=) 30.Rg7?? (better 30.Qf6! Re8 31.Be5 Re5 32.Qe5+–) 30...Bg7–+ 31.Qg4 Re8 32.Kf2 Qe1?? (better 32...f6 33.Bf6 Qc5 34.Bd4 Qf8 35.Kg1 Be6–+) 33.Kg1+= f6 34.Bf6 Rc7 35.Rd5 Rf8 (35...Kh8 36.Bh4 Qa1+=) 36.Ne4 (better 36.Rf5 Qe8 37.Kh1+–) 36...Rcf7?? (better 36...Kh8! 37.Rg5 Qe3 (37...Rf6? 38.Nf6 Qe3 39.Kh1+–) 38.Kh1 A) 38...Rf6? 39.Nf6 Rc1 40.Rf5+– (40.Rg7 Rf1 41.Kh2 Rf2 42.Kh1 Qc1 43.Qg1 Qg1 44.Rg1 Rf6=+); B) 38...Bf6 39.Nf6 Qb3=) 37.Rg5+– Kh8 (37...Qe3 38.Kh1 Qg5 39.Qg5 Kh8 40.Bg7 Rg7+–) 38.Rg7 (38.Bg7 Rg7 39.Qe2 Rg5 40.Ng5 Qe2 41.Be2 Rg8–+) 38...Qe3 39.Kh1 Qe1 (39...Qf3 40.Qf3 Rg7 41.Bg7 Kg7 42.Qg3 Kf7 43.Bc4 Ke8 44.Qb8 Kd7 45.Nc5 Ke7 46.Qe5 Kd8 47.Qd6 Kc8 48.Be6) 40.Rf7 1–0. Markov,Slobodan (2130) – Perisic,Radivoj (2310), TQM CENTAR–A, 2011.

7.Qc2 Re8 8.Nf3 e4 9.Nd4 Be5 10.bc6 bc6 11.Be2 Qc7 12.h3 Nbd7 13.cd5 cd5 14.Qc7 Bc7 15.Nc3 Be5 16.f4 Bd4 17.ed4 Rb8 18.Ra2 Nb6 19.0-0 Nc4 20.Bc4 dc4 21.Nb5 a6 22.Nd6 Rd8 23.Nc4 Be6 24.Rc1 Rdc8 25.d5 Bd5 26.Bf6 Rc4 27.Rc4 Bc4 28.Rc2 Bd3 29.Rc6 gf6 30.Rf6 Rb2 31.g4 Rd2 32.h4 Kg7 33.g5 Rd1 34.Kf2 Rf1 35.Kg3 Rh1 36.Kg4 e3 37.h5 h6 38.Rd6 Be4 39.gh6 Kh7 40.Rd7 e2 41.Kg5 Rg1 42.Kf6 e1Q 43.Rf7 Kh6 44.Rf8 Qc3 45.Ke7 Rg7 46.Kd6 Bh7 47.Rf6 Qf6 48.Kc5 Re7 49.a5 Qf5 50.Kc6 Re6 0-1. zembelek (2135) - mossboss (1985), Rated Blitz game, lichess.org, 2014.

7.Bd3 Re8 8.Nc3 Nbd7 9.Bf5? (9.bc6 Nc5 10.Qc2 e4–+) 9...dc4 (9...Nc5 10.Bb1 d4 11.Nce2–+) 10.Qc2?! (10.Bc2–+) 10...Nc5 11.Be4 (11.Bc8 Qc8 12.Kf1–+) 11...Nfe4 (11...Nce4?! 12.Ne4 cb5 13.Nd6 Qd6 14.ab5–+) 12.Ne4 Bf5 13.f3 Be4 14.fe4 Nd3 15.Ke2 Qh4 (better is 15...Qg5 16.g3 Qg4 17.Nf3 Qe4–+) 16.g3 (16.Qc4 Nb2 17.Qc2–+) 16...Qe4 17.Nf3 Nf4! 18.gf4 Qc2 19.Be5 Be5 20.fe5 Rad8 21.Rhd1 (21.Rhc1 Rd2! 22.Nd2 Qd3 23.Kf3 Qd2–+) 21...c3 22.Rac1 Rd2! (22...Rd2 23.Nd2 Qa4 24.Rc3 Qg4 25.Ke1 Qh4 26.Kf1 Qh3 27.Ke1 cb5–+) 0–1. Zampier,Alexandre – Franca,Willian Bento (1985), Maringa BRA, 4th Open, 2014.

7.d4 e4 8.g3 (8.Nc3 Bg4 9.Be2 Be2 10.Qe2 Bb4=+) 8...Bg4 (8...dc4 9.Bc4 Nbd7 10.Ne2–/+) 9.Be2 Qd7 (9...Be6 10.Kf1–/+) 10.cd5 cd5 11.Ba3 (11.Bg4!? Ng4 12.Ne2–/+) 11...Ba3 12.Ra3 Be2 (12...Bf5!?–/+) 13.Ne2=+ Qd6 14.Rc3 Nbd7 15.0-0 (15.Qc2 Nb6=+) 15...Rac8 (15...a6 16.Na3=+) 16.Qd2 (better is 16.Qb3=) 16...Qb4?? (better is 16...Nb6=+) 17.Rc8+– Rc8 (17...Qa4 18.Nbc3 Qa3+–) 18.Qb4 1–0. Materna,Edmund – Haake,Helmut, Dresden Vdes op, 2000.

7.d4 Ne4 8.Nc3–/+.

7.d4 Ne4 8.c5 Bc7 9.Bd3–/+.

7.cd5 cb5 A) 8.Bb5 Nd5 9.Nc3 (9.Qf3 Nb4 10.Na3 Be6 11.Nh3 N8c6 12.0-0 a6 13.Bc4 Nc2 14.Nc2+=; 9.e4 Nf4 10.g3 Ng6 11.Nf3 Nc6 12.Nc3 Be6 13.d4 Bg4 14.de5+=; 9.Nf3 e4 10.Qb3 Nf6 11.Nd4 Nbd7 12.0-0 Nc5 13.Qc2 Qc7 14.h3+=) 9...Nc3 10.Bc3 Nc6 11.Qb1 Rb8 12.Nf3 Be6 13.0-0 f5 14.e4=; B) 8.d4 B1) 8...e4 9.ab5 (9.Bb5 Nd5 10.Nd2 Qg5 11.Qb1 Bf5 12.Bf1 Nc6 13.Ne2 Rac8 14.Ng3–/+; 9.Nd2 ba4 10.Qa4 Nbd7 11.Nc4 Nb6 12.Qb5 Nc4 13.Bc4 a6 14.Qb3–+) 9...Nd5 10.Ba3 Ba3 11.Ra3 Qe7 12.Qc1 Bf5 13.Ra4 Rc8 14.Rc4+=; B2) 8...Nd5 9.de5 (9.Bb5 e4 10.Nd2 Qg5 11.Qb1 Bf5 12.Bf1 Nc6 13.Ne2 Rac8 14.Ng3–/+) 9...Bb4 10.Nd2 ba4 11.Ngf3 Nb6 12.Be2 Nc6 13.0-0 Bg4 14.h3–/+; B3) 8...ba4 9.de5 Bb4 10.Bc3 Nd5 11.Bb4 Nb4 12.Ra4 a5 13.Nf3 Qc7 14.Na3–/+; B4) 8...Bb4 9.Bc3 Nd5 10.Bb4 Nb4 11.ab5 Qc7 12.Ra4 Nc2 13.Kd2 Bf5 14.d5–/+; C) 8.ab5 Nd5 9.Nc3 (9.Qf3 Nb4 10.Na3 Qh4 11.e4 f5 12.ef5 Bf5 13.Qe3 Be4 14.Nh3–/+; 9.e4 Nf6 10.Qf3 Be6 11.Be2 Qb6 12.Nc3 Rd8 13.Qg3 Nbd7 14.Nh3+=; 9.Bc4 Nb6 10.Bb3 N8d7 11.d4 ed4 12.Nf3 Bb4 13.Ke2 Nc5 14.Qd4+=) 9...Nb4 10.Rc1 Bf5 11.e4 Be6 12.d4 ed4 13.Qd4 f6 14.Bc4=.

7.cd5 cd5 8.a5 A) 8...Bf5 9.Nf3 (9.d4 Ne4 10.Nf3 Bb4 11.Ke2 Ba5 12.de5 Re8 13.Bd4 Nd7 14.h3–/+; 9.Be2 Nbd7 10.Nf3 Qc7 11.a6 Rfc8 12.0-0 Rab8 13.Ba3 Bc2 14.Bd6+=; 9.Ne2 Qc7 10.Nbc3 Bd3 11.Ng3 Bf1 12.Rf1 Nbd7 13.Nf5 Rfc8 14.b6+=) 9...Nbd7 10.Nc3 Rc8 11.Be2 d4 12.ed4 e4 13.Nh4 Be6 14.a6+=; B) 8...Bc7 9.Be2 (9.Qa4 Bf5 10.Nf3 Nbd7 11.a6 ba6 12.Qa6 Re8 13.Qa2 Bd6 14.Be2+=; 9.Ne2 Nbd7 10.Ba3 Re8 11.Bb4 d4 12.Qb3 Nf8 13.Ng3 Be6 14.Bc4+=; 9.b6 Bd6 10.Qb3 Nc6 11.Nf3 Bg4 12.Bb5 Bf3 13.gf3 ab6 14.Bc6–/+) 9...Nbd7 10.Bc3 Ne4 11.Nf3 Nc3 12.Nc3 e4 13.Nd4 Nc5 14.0-0+=; C) 8...Nbd7 9.d4 (9.Be2 Bc7 10.Bc3 Ne4 11.Nf3 Nc3 12.Nc3 e4 13.Nd4 Nc5 14.0-0+=; 9.Nf3 Re8 10.Be2 Bc7 11.Bc3 d4 12.ed4 e4 13.Ne5 Ne5 14.de5+=; 9.Qc2 Bb4 10.Bc3 Qc7 11.Nf3 Bd6 12.d3 Re8 13.Be2 e4 14.de4+=) 9...e4 10.Nd2 Bb4 11.Qa4 Bd2 12.Kd2 a6 13.b6 Nb8 14.Rc1+=; D) 8...a6 9.Nf3 (9.b6 Nc6 10.Be2 e4 11.Ra4 Bf5 12.g4 Be6 13.d3 Nd7 14.d4–/+; 9.d4 ed4 10.Bd4 ab5 11.Nc3 Bb4 12.Bb5 Ra5 13.Bd3 Ne4 14.Nge2–/+; 9.Bc3 ab5 10.Bb5 Ne4 11.Nf3 Nc3 12.dc3 Be6 13.0-0 Na6 14.Qa4–/+) 9...e4 10.Nd4 ab5 11.Nb5 Bb4 12.Ra4 Nc6 13.Bf6 gf6 14.N1c3–/+.

7.cd5 cd5 8.d4 A) 8...Nbd7 9.Nc3 (9.Ba3 Qa5 10.Qd2 Qc7 11.Bd6 Qd6 12.Nc3 Ne4 13.Ne4 de4 14.Ne2=; 9.de5 Ne5 10.Qd4 a6 11.Nd2 ab5 12.Bb5 Nc6 13.Qh4 Ne4 14.Qd8+=; 9.Nd2 Qa5 10.Be2 e4 11.Ba3 Ba3 12.Ra3 Nb6 13.Qc2 Be6 14.Qc3+=) 9...Qa5 10.Nf3 Re8 11.Be2 e4 12.Nd2 Bb4 13.Qc2 Nf8 14.0-0=; B) 8...Ne4 9.Bd3 (9.Nf3 Qa5 10.Ke2 Bd7 11.Qb3 Be6 12.de5 Bb4 13.Nd4 Nd7 14.f3=; 9.de5 Bb4 10.Ke2 Qh4 11.g3 Qh5 12.Nf3 Ng5 13.Bg2 Bh3 14.Kf1–+) 9...Qg5 10.Kf1 ed4 11.Nf3 Qh5 12.Be4 de4 13.Qd4 Qg4 14.Qd6=; C) 8...e4 9.Ba3 (9.Be2 Ne8 10.Nc3 Qg5 11.Bf1 Bg4 12.h4 Qg6 13.Nge2 Nf6 14.Ba3+=; 9.Nd2 Qe7 10.Rc1 a6 11.Qb3 ab5 12.Bb5 Bd7 13.Ne2 Bb5 14.ab5+=; 9.Nc3 Qa5 10.Qd2 Bb4 11.Nge2 a6 12.Ba3 Ba3 13.Ra3 Qb4 14.Ra2=) 9...Be6 10.Ne2 a6 11.Nf4 Ba3 12.Ra3 Qd6 13.Rc3 Rc8 14.Rc8=.

7.cd5 cd5 8.Be2 A) 8...Bf5 9.d4 (9.Nf3 Nbd7 10.0-0 Rc8 11.a5 Bc2 12.Qe1 Re8 13.Nc3 Nc5 14.d4+=; 9.a5 Nbd7 10.Nf3 Qc7 11.a6 Rfc8 12.0-0 Rab8 13.Ba3 Bc2 14.Qe1+=; 9.d3 Nbd7 10.Nf3 Rc8 11.a5 Bb4 12.Nbd2 e4 13.de4 Ne4 14.Qb3+=) 9...Nbd7 10.de5 Ne5 11.Nf3 Nc4 12.Bd4 Bb4 13.Bc3 Bc3 14.Nc3=; B) 8...a6 9.ba6 (9.d4 e4 10.Ba3 ab5 11.Bb5 Bg4 12.Qd2 Nc6 13.Bc6 bc6 14.Nc3+=; 9.Nf3 Nbd7 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Qc7 13.Qc1 Qb8 14.h3+=) 9...Na6 10.Nf3 e4 11.Nd4 Bd7 12.Nb5 Be7 13.0-0 Nc7 14.Nd4+=; C) 8...Qa5 9.Nf3 (9.f4 ef4 10.Bf6 gf6 11.ef4 Bf4 12.Nf3 Be6 13.0-0 Re8 14.Qe1+=; 9.Bc3 Qc7 10.f4 Nbd7 11.fe5 Ne5 12.Nf3 Ne4 13.Ne5 Nc3 14.Nc3+=; 9.Nc3 Nbd7 10.Nf3 e4 11.Nd4 Ne5 12.Rc1 Nc4 13.Ba1 Nb6 14.0-0=) 9...e4 10.Nd4 Bd7 11.Ba3 Ba3 12.Na3 Rc8 13.0-0 a6 14.d3=; D) 8...e4 9.d4 (9.Nc3 Be6 10.d3 Qe7 11.Qd2 Rc8 12.Rc1 Bb4 13.f3 Nbd7 14.Kf2–/+; 9.d3 Be6 10.Nc3 Qe7 11.Qd2 Rc8 12.f3 Nbd7 13.Rd1 Bb4 14.de4–+; 9.Bd4 Be6 10.Nc3 Nbd7 11.Rc1 Qa5 12.g4 Ba3 13.Rc2 Bc5 14.Bf6+=) 9...Ne8 10.Nd2 Qg5 11.g3 Be6 12.Qb3 Nd7 13.Rc1 Nef6 14.Ba3+=.

7.cd5 cd5 8.Nf3 Nbd7–/+.

7.cd5 cd5 8.Nf3 Re8 (8...Nbd7 9.Nc3 (9.Ba3 Ba3 10.Ra3 Qa5 11.Be2 d4 12.Qc2 Re8 13.ed4 e4 14.Ne5+=; 9.Be2 e4 10.Nd4 Ne5 11.0-0 Nfg4 12.h3 Qh4 13.a5 Nh2 14.Re1+=; 9.d3 a6 10.Be2 Qb6 11.0-0 ab5 12.ab5 Ra1 13.Ba1 Rd8 14.d4+=) 9...Nb6 10.d3 Bg4 11.Be2 Re8 12.a5 Nbd7 13.0-0 Qc7 14.a6=; 8...Qe7 9.Be2 (9.a5 Bf5 10.Be2 Nbd7 11.d4 e4 12.Nfd2 Rac8 13.Ba3 Rc7 14.Bd6+=; 9.d3 a6 10.Be2 ab5 11.ab5 Ra1 12.Ba1 Bg4 13.0-0 Nbd7 14.Qc2+=; 9.d4 e4 10.Ne5 Nbd7 11.Nd7 Bd7 12.Ba3 Ba3 13.Ra3 Rfc8 14.Qd2+=) 9...Bf5 10.0-0 Rc8 11.Nc3 Nbd7 12.a5 Rc7 13.b6 ab6 14.ab6+=; 8...e4 9.Nd4 Nbd7 10.Be2 Ne5 11.a5 Qc7 12.Ra4 Ned7 13.f4 Nc5 14.Ra3+=) 9.Be2 (9.a5 Bg4 10.Be2 Bc7 11.Qa4 e4 12.Bf6 Qf6 13.Nd4 Be2 14.Ke2–/+; 9.Qc2 Bg4 10.d4 Bf3 11.gf3 Nbd7 12.Qd2 Rc8 13.a5 ed4 14.Bd4–/+) 9...Bg4 (9...Bf5 10.0-0 Nbd7 11.Nc3 Rc8 12.Rc1 Qa5 13.d4 e4 14.Nd2+=) 10.h3 (10.0-0 Nbd7 11.Ba3 Ba3 12.Ra3 Bf3 13.Bf3 Qb6 14.d4=) 10...Bf5 11.d3 (11.0-0 Nbd7 12.d4 e4 13.Nfd2 Rc8 14.g4+=) 11...Nbd7 12.0-0 Rc8 13.Nbd2 (13.a5 Bb4 14.a6+=) 13...Qe7 (13...Qa5 14.Nb3+=) 14.Re1 (14.a5+=) 14...h6 15.d4 (better is 15.Rc1!?+=) 15...Bc2–+ 16.Qc1 e4 17.Nh2 Bd3 18.Qd1 Rc2 19.Bc1 Rec8 20.Bd3 ed3 21.Nhf3 Ne4 22.Ne4 de4 (22...Qe4?! 23.Rf1+=) 23.Nd2 Nf6 24.Rf1 Qe6 25.Ba3 Ba3 26.Ra3 Nd5 27.Nb1 f5 28.Ra1 Qg6 29.Na3 (29.g4–+) 29...Ne3! (29...Ne3 30.g3 Nd1 31.Rfd1 Re2–+) 0–1. Trombik,K (2035) – Tymrakiewicz,R (2315), Karvina Open, 2011.

7.cd5 Nd5 A) 8.e4 A1) 8...Nf6 9.Qc2 (9.Nc3 Bc5 10.Qf3 Be6 11.Qg3 Bd4 12.Rb1 Bc3 13.Bc3 Ne4 14.Qe5–/+; 9.Qf3 a6 10.Nc3 Be6 11.Nh3 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qd1–/+; 9.Qe2 a6 10.Nf3 Re8 11.Qd3 ab5 12.ab5 Ra1 13.Ba1 Qe7 14.Be2+=) 9...cb5 10.ab5 Bg4 11.Na3 Nbd7 12.Nc4 Qc7 13.Qd3 Bc5 14.Nf3+= ; A2) 8...Nb4 9.Nc3 (9.Na3 Qh4 10.Qe2 Rd8 11.Nf3 Qe7 12.Qe3 Bg4 13.Rc1 Nd7 14.Nc4+=; 9.Nf3 Bg4 10.Na3 Qf6 11.d4 Re8 12.h3 Bf3 13.gf3 Rd8 14.de5+=; 9.Be2 Qh4 10.Nc3 Bc5 11.g3 Qf6 12.Nf3 Rd8 13.Ba3 Bh3 14.Bb4–/+) 9...Bc5 10.Rc1 Qd4 11.Qe2 Rd8 12.Nd1 Qd6 13.Nf3 Nd7 14.Ne3=; A3) 8...Nc7 9.Nc3 (9.Nf3 Bg4 10.h3 Bh5 11.Nc3 Qf6 12.Rc1 cb5 13.ab5 Rd8 14.Bc4+=; 9.Qh5 Ne6 10.Nc3 a6 11.Nf3 Nf4 12.Qh4 b6 13.Qd8 Rd8 14.d4+=; 9.Bc4 cb5 10.ab5 Be6 11.Be6 Ne6 12.Nf3 Qd7 13.Qb3 Re8 14.0-0+=) 9...Be6 10.Nf3 c5 11.Be2 Nd7 12.a5 Qf6 13.0-0 Rad8 14.Rc1=; A4) 8...Nf4 9.Nf3 (9.Qf3 a6 10.Na3 ab5 11.ab5 Be6 12.Nc4 Ra1 13.Ba1 Bc4 14.Bc4–/+; 9.Nc3 Bc5 10.Qf3 a6 11.Qg3 ab5 12.Nf3 f6 13.ab5 Ra1 14.Ba1–/+; 9.g3 Ng6 10.Nf3 Qf6 11.d4 Bb4 12.Ke2 Rd8 13.Bg2 Bg4 14.de5–+) 9...Qf6 10.Nc3 Rd8 11.Rc1 Be6 12.g3 Ng6 13.Be2 a6 14.b6–/+; B) 8.Qf3 B1) 8...Nf6 9.Qg3 (9.h3 Be6 10.Nc3 a6 11.Be2 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Bb2–+; 9.e4 a6 10.Nc3 Be6 11.Nh3 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qd1–/+; 9.Bc4 a6 10.Nc3 Bg4 11.Qg3 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Ba2–+) 9...a6 10.Be2 ab5 11.ab5 Ne4 12.Qf3 Ra1 13.Ba1 Nf6 14.Qg3–/+; B2) 8...Be6 9.Be2 (9.e4 Nb4 10.Na3 f5 11.ef5 Rf5 12.Qg3 Qd7 13.Nh3 Bd5 14.Qc3–/+; 9.Nc3 Nf6 10.e4 a6 11.Nh3 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qd1–/+; 9.Nh3 Nb4 10.Na3 a6 11.bc6 N8c6 12.Be2 Be7 13.Rc1 f5 14.Qh5–/+) 9...f5 10.Qg3 f4 11.ef4 Nf4 12.Nc3 Rf6 13.Bf1 a6 14.Ne4+=; B3) 8...Bd7 9.Nc3 (9.Qg3 Re8 10.Nc3 Bf5 11.bc6 bc6 12.Qf3 Be6 13.Rc1 Qb6 14.Ba1+=; 9.e4 Nb4 10.Na3 a6 11.Rc1 ab5 12.ab5 f5 13.Bc4 Kh8 14.ef5–/+; 9.Bc4 Nb6 10.Be2 Be6 11.Nh3 a6 12.0-0 ab5 13.ab5 Ra1 14.Ba1–/+) 9...Nc3 10.dc3 cb5 11.ab5 Qb6 12.Rd1 Be6 13.Nh3 Bb3 14.Rd2+=; B4) 8...Nb4 9.Na3 (9.Qe4 Nd7 10.Nf3 Nc5 11.Qc4 Be6 12.Qc3 cb5 13.ab5 Rc8 14.Qb4–+) 9...Nd7 10.bc6 Nc5 11.e4 bc6 12.Bc3 a5 13.Bc4 Qh4 14.Ne2–+; C) 8.Ne2 C1) 8...Be6 9.Na3 (9.Nec3 Nd7 10.Nd5 cd5 11.d4 Rc8 12.de5 Qa5 13.Nd2 Ne5 14.Rc1–/+; 9.e4 Nf6 10.Qc2 cb5 11.ab5 Qb6 12.Nbc3 Ng4 13.Nd1 Rc8 14.Nec3–/+; 9.Nbc3 Nd7 10.bc6 bc6 11.Ne4 Be7 12.Qc2 Nb4 13.Qc3 Rb8 14.d4–/+) 9...Qh4 10.Ng3 e4 11.Nc4 Bb4 12.Ba3 f5 13.Bb4 Nb4 14.Rc1+= ; C2) 8...cb5 9.ab5 Bf5 10.Ng3 Be6 11.Nc3 Qd7 12.Nce4 Rd8 13.Nd6 Qd6 14.d4=; C3) 8...Re8 9.Nec3 (9.Nbc3 Bg4 10.Nd5 cd5 11.Qb3 Be6 12.d4 Nd7 13.Rc1 f6 14.Ng3+=; 9.Ng3 Be6 10.Ne4 cb5 11.Bb5 Nc6 12.0-0 Bb4 13.Qh5 g6 14.Qe2+=; 9.Na3 a6 10.Nc4 Bc7 11.Ng3 Bd7 12.Ne4 cb5 13.ab5 Bb5 14.Ncd6–/+) 9...Nb4 10.Ne4 Bf8 11.d3 cb5 12.ab5 Bd7 13.Nbc3 f5 14.Ng3+=; C4) 8...Bg4 9.h3 (9.Nbc3 Nb4 10.Qb1 Be6 11.Ba3 a5 12.f4 ef4 13.Nf4 Bf4 14.ef4–/+; 9.d4 Qa5 10.Nd2 ed4 11.Bd4 c5 12.Bb2 c4 13.Ba3 Nb4 14.Bb4–/+; 9.f3 Be6 10.e4 Nc7 11.d4 cb5 12.de5 Bb4 13.Nd2 Nc6 14.ab5–/+) 9...Bf5 10.Ng3 Be6 11.Ne4 cb5 12.Qh5 Nb4 13.Na3 ba4 14.Nd6–/+; D) 8.Nc3 D1) 8...Nc3 9.dc3 (9.Bc3 cb5 10.Bb5 Nc6 11.Qb1 Rb8 12.Nf3 Be6 13.0-0 f5 14.e4=) 9...e4 10.Ba3 c5 11.Qd5 Qf6 12.Ne2 Be5 13.Qc5 Nd7 14.Qb4=; D2) 8...a6 9.bc6 (9.Ne4 cb5 10.Nf3 Bc7 11.ab5 f5 12.Nc3 Nc3 13.Bc3 e4 14.Nd4=; 9.Nf3 Nc3 10.dc3 e4 11.Nd2 Bf5 12.Nc4 Be7 13.Ba3 Qd1 14.Kd1+=; 9.Nd5 cd5 10.Qb3 Be6 11.Nf3 Nd7 12.Rc1 Nc5 13.Qc2 Rc8 14.Qd1+=) 9...Nc3 10.Bc3 Nc6 11.Bd3 Qg5 12.Nf3 Qg4 13.h3 Qd7 14.Be4=; D3) 8...Be6 9.Nf3 (9.Ne4 f6 10.Nd6 Qd6 11.d4 Rd8 12.de5 fe5 13.Nf3 Nd7 14.Qd2=; 9.Qf3 Nf6 10.e4 a6 11.Nh3 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qd1–/+; 9.e4 Nc3 10.Bc3 cb5 11.ab5 Nd7 12.Nf3 Nc5 13.Qc2 Qf6 14.d4+=) 9...Nc3 10.dc3 Bd5 11.Qc2 e4 12.Nd2 f5 13.c4 Bf7 14.g4=; D4) 8...Re8 9.Ne4 (9.Rc1 Nc3 10.Bc3 a6 11.bc6 Nc6 12.Qh5 e4 13.d4 Nb4 14.Bc4+=; 9.Nf3 Nc3 10.dc3 e4 11.Nd2 Qh4 12.Ne4 Re4 13.Qd6 Re3 14.Be2+=; 9.e4 Nf4 10.Qf3 Bc5 11.Rc1 a6 12.g3 Ne6 13.Bc4 ab5 14.ab5–/+) 9...a6 10.Nf3 Bc7 11.Bc4 Bf5 12.Ng3 Bg4 13.h3 Bd7 14.bc6+=.

7.Be2 Be6 8.Qc2 Nbd7 9.Nf3 e4 (9...cb5 10.ab5 Qc7 11.Ng5+=) 10.Nd4+= Ne5 (10...c5 11.Ne6 fe6 12.a5+=) 11.c5= Bc7 12.f4 ef3 13.Nf3 (13.gf3 Qe7=) 13...Neg4 (13...Nf3 14.gf3 Re8 15.Bd4+=) 14.Nc3 (14.0-0 Ne4 15.g3 Qe7=) 14...Re8 (14...Qb8 15.Nd1=) 15.0-0 Qb8 h2 becomes the focus of attention 16.h3 Nh2 17.Nh2 Bh2 18.Kh1 Bg3 19.Bf3 Qc8 20.Ne2 Bf5 21.Qb3 White prepares the advance b6 21...Be5 22.Be5 Re5 23.Kh2 (23.Qc3 Qc7=) 23...Qc7 24.b6 (24.Kg1 Ne4 25.Qb4 Rae8=) 24...Qe7 (24...ab6 25.Qb6 Qb6 26.cb6+=) 25.Qc3 (25.ba7 A) 25...Qc5? 26.d4 (26.Qb7?! Ra7 27.Rac1 Qc1 28.Qb8 Re8 29.Qe8 Ne8 30.Rc1 Ra4+=) 26...Re3 27.Qe3 (27.dc5?! Rb3 28.Nd4 Rf3 29.Rf3 Bd7+=) 27...Qa7 28.a5+–; B) 25...Ra7 26.Ng3 Bg6+= (26...Qc5? 27.d4 Qe7 28.de5 Qe5 29.a5+–)) 25...Nd7 (25...Ne4!? 26.Be4 de4+= (26...Be4?! 27.a5=)) 26.a5= a6 27.Rac1 Be4 28.Qd4 Bf3 29.gf3 Rh5 (29...Re8 30.Ng3=) 30.Rg1 (30.Ng3 Rg5+=) 30...Ne5= 31.Rg3 Re8 32.Nf4 Rh4 (32...Rg5 33.Rcg1=) 33.Qc3 f6 34.Rcg1 g5 (34...Kh8 A) 35.Rg7?! Nf3 36.Kh1 Qg7 (36...Ng1?? 37.Re7 Rf8 38.Kg1+–) 37.Rg7 Kg7=; B) 35.d3 g6 36.Qc2=) 35.d4 Nf7 36.Ng2 Rh6 37.Qd3 Qd7 38.e4 de4 (38...Kh8 39.Ne3+=) 39.fe4+/– Kh8 40.Ne3 Ne5 (40...Qe6 41.d5 cd5 42.ed5+/–) 41.Qb3 (better is 41.Qc2 Nf7 42.Nf5+–) 41...Ng6? (41...Nf7 42.Nf5 Re4 43.Qf3+=) 42.Nf5 (better is 42.Ng4!? Kg7 43.Nh6 Kh6+–) 42...Rh5 43.Qf3 Nf4 44.Nd6 Re7 45.Re1 (45.Rd1 Qe6+–) 45...Qe6+/– 46.Nf5 (46.Ra1 Rd7+/–) 46...Rd7 (better is 46...Qa2 47.Kg1 Re6+=) 47.Qc3?? (better is 47.Qf2+/–) 47...Qa2–+ 48.Kh1?? (better is 48.Kg1 Rh3! 49.Qf3–+) 48...Rh3!! 49.Kg1 (49.Rh3 A deflection 49...Qg2 Theme: Double Attack) 49...Qh2 50.Kf1 Qh1 51.Kf2 Rh2 (better is 51...Nd3! 52.Ke2 Qe4 53.Kd1 Qf5 54.Re8 Kg7 55.Rh3 Qh3 56.Kc2–+) 52.Ke3 Ng2 (52...Ng2 53.Rg2 Qg2–+) 0–1. Fischer,A – Szabo, corr SOK–87–15, 1987.

7.Ne2 Re8 8.Ng3 Qe7 9.Qc1 e4 10.f4 Nbd7 11.Ba3 cb5 12.Be2 Bf4 13.Rf1 Nc5 14.cd5 Bg5 15.Bd1 0–1. RichardSommer (1975) – Noah2019 (1960), lichess.org, 2020.

7.Nf3 Nbd7 8.Be2 Re8 9.0-0 Nc5 (9...e4 10.bc6 bc6 11.Nd4+=) 10.d4 (10.Be5!? Be5 11.Ne5+=) 10...ed4= 11.Nd4 (11.Qd4? Nb3 12.Qc3 Na1 13.Ba1 dc4 14.bc6 bc6–/+) 11...dc4 12.Bc4 Bh2?? (better is 12...Ng4 13.h3 Ne5=) 13.Kh2+– Ng4 14.Kg1 Qh4 (14...cb5 15.ab5 Ne4 16.Na3+–) 15.Nf3 Qh5 16.Qd4 Re5 (16...Nf6+–) 17.Qd8 (17.Qd8 Re8 18.Qe8) 1–0. GuestPNDS – GuestMBMB, freechess.org, 2017.

7.Nf3 e4 8.Ne5–/+.

7.Nf3 Qe7 8.Nc3 d4 9.Ne2 de3 10.fe3 (10.de3 Bb4 11.Bc3 Ne4=+) 10...e4 11.Nfd4 Bg4 12.Qc2 c5 13.Nb3 Nbd7 14.Nc3 Nd5 (14...Be5 15.a5–/+) 15.Ne4 Nb4 16.Qc3 Be5 17.d4 cd4 18.Nd4 (18.ed4 Bf4 19.Bd3 Nd3 20.Qd3–+) 18...Bd4 19.ed4 Nf6 20.Ba3 (20.d5 Qe4 21.Kf2 Nc2–+) 20...Ne4 (20...Qe4 21.Kf2 Qf4 22.Kg1–+) 21.Bb4 Qh4 22.g3 Qf6 23.Qe3 Rfe8 24.Ra3 Nf2 (25.Bd2 Nh1–+) 0–1. Bortkun,Wojciech (1795) – Kozek,Wojciech (2055), Poland, 2002.

7.Nf3 Re8 8.Nc3 d4 9.Na2 c5 10.d3 e4 11.de4 Ne4 12.Bd3 Qa5 13.Kf1 de3 14.fe3 Qc7 15.Qc1 (15.Qc2 f5=+) 15...Bf5 (better 15...Nd7–/+) 16.Nh4? (better 16.Qc2 Bg6 17.Nc3=+) 16...Ng3!–+ 17.hg3 Bd3 18.Kg1 Qe7 (18...Qd7 19.Qd2 Bc4 20.Qc3–+) 19.Kf2 (19.g4 Qe6 20.Nf5 Bf8–+) 19...Qg5 20.Rh3 Nd7 21.Nf3 Qf5 (21...Qg6 22.a5–+) 22.Qd2 Ne5 (22...Rad8 23.Rah1 Nf6 24.Kg1–+) 23.Be5–/+ Be5 (worse 23...Re5 24.Rah1 Re6 25.Rh5+–) 24.Rah1 Rad8 (24...Qg6 25.Kg1 h6 26.Nc1–+) 25.Rh7 Qh7 (25...g5 26.Qc1 Qg4–/+ (26...Qh7?! 27.Rh7 Kh7 28.Ng5 Kg6 29.Nf3=)) 26.Rh7=+ Bh7 27.Qc1 Bf6 28.Nc3 Bc3 29.Qc3 b6 30.Ne5 Re6 (30...f6 31.Nc6 Rd3 32.Qc1–/+) 31.Nc6 White intends a5 (31.a5 Be4=+) 31...Rd7 (31...Rd3 32.Qc1–/+) 32.a5 Be4 33.ab6 (33.Ne5!? Rd1 34.g4=+) 33...ab6–/+ 34.Ne5 Rd1 (34...Ra7 35.Qb2–/+) 35.g4 Red6 (35...f6 36.Nf3=+) 36.Nf3= f6 37.Ke2 (37.g5 R1d3 38.Qa1 Re6=) 37...Kf7 (37...R6d3 38.Qb2=+) 38.g5 Rh1 39.gf6 gf6 40.Kf2 Rdd1 41.Qa3 (41.Nd2 Rc1 42.Ne4 Rc3 43.Nc3–/+) 41...Ra1=+ 42.Qb2?? (better 42.Qb3=+) 42...Raf1–+ 43.Kg3 Bf3 44.gf3 (44.Qd2 Ke7 45.Qd3 Bb7–+) 44…Rfg1 (44...Rfg1 45.Kf2 Rh2 46.Kg1 Rb2–+) 0–1. Kislov,Leonid – Savostjanov,Igor, 2012.

7.Nf3 Re8 8.Be2 Bg4 9.h3 Bh5 10.Nc3 Bf3 (10...d4 11.Nb1 d3 12.Bf1-/+) 11.gf3 d4 12.Ne4 Ne4 13.fe4 c5 (13...de3 14.de3 Bb4 15.Kf1=+) 14.ed4 (14.Rg1!?=) 14...ed4-/+ (worse 14...cd4 15.Bg4=) 15.d3 Bf4 (15...f5 16.ef5 Qf6 17.Kf1=+) 16.Bg4=+ b6 (16...a6 17.Rg1=+) 17.Qf3= Qc7 (17...Be5 18.Rg1=) 18.0-0 (better 18.e5 Qe5 19.Kd1+=) 18...Nd7?? (18...Be5 19.Bc1=) 19.Bc1?? (better 19.Bd7 Qd7 20.Qf4 Qh3 21.Qg3+-) 19...Be5 (19...Bc1 20.Bd7 Qd7 21.Rfc1=+) 20.Kh1 (20.a5 Nf6=) 20...Nf6 (20...a6 21.Rg1=+) 21.Rg1=+ Kh8 22.Qg2 g6 23.Bg5 h5 (23...Ng4 24.Qg4 a6 25.f4=) 24.f4 (24.Be2 Nh7+=) 24...hg4= 25.fe5 Qe5 26.Bf6 Qf6 27.Raf1 Qg7 (27...Qe6 28.Qg4 Qg4 29.Rg4=) 28.Qg4+= Re5 (28...Re7 29.Rg3 Qh6 30.Kg2+=) 29.Qd7+/- Exerts pressure on the backward pawn 29...Kg8 30.Rf3 Ree8 31.Rgf1 Rf8 32.Rf6 Rad8 (better 32...Qh7!?+/-) 33.Qa7+- Qh6 34.R1f3 Qc1 35.Kh2 Qd2 (35...Ra8 36.Qb6 Qg5+-) 36.Kg1?? (better 36.Rf2 Qg5 37.Qb6 Qe5 38.Kh1+-) 36...Qd1 (36...Qg5 37.Kf1 Qc1 38.Ke2 Qc2 39.Ke1 Qc1 40.Kf2 Qd2 41.Kg3 Qg5 42.Kh2 Qd2 43.Rf2+-) 37.Kg2 Qd2 38.Kg3 (38.Rf2 Qd3 39.R6f4 Qc4 40.Qb6 A) 40...Qa4?? 41.Rh4 (41.Qc5?! d3 42.Rd2 Rd7=) 41...f6 42.Qc7+- (42.Qc5?! Qb3+=; 42.Rf6 Qc2 43.Kg1 Qd1 44.Kf2 Qd2 45.Kf1 Qd3 46.Kf2 Qe3 47.Kf1 Kg7-+); B) 40...d3 41.Rf7 Qe4 42.Kg1 Qe1 43.Kg2 Qe4 44.Kg1 Qe1 45.Kg2 Qe4=) 38...Qg5= 39.Kh2 Qd2 40.Rf2 Qd3 (40...Qg5 41.Qb6 Qe5 42.Kh1 Rb8+-) 41.Rf7 (41.Qb6?! Qe4 42.Qc5 d3+=) 41...Rf7 42.Qf7 (42.Rf7?! Qe2 43.Kg1 Qe3 44.Kh2 Qd2 45.Kh1 Qc1 46.Kg2 Qg5 47.Kf1 Qh4=) 42...Kh8 43.Qf6 (43.Qg6 Qc2 44.Qh6 Kg8 45.Rc2 Kf7 46.Rf2 Ke7 47.Qg7 Kd6 48.Rf6 Ke5 49.Qe7) 43...Kh7+- 44.Qd8 (44.Qh4!? Kg7 45.Qd8 Qc4 46.Qf8 Kh7+-) 44...Qe4 45.Rf7 Kh6 46.Qh8 Kg5 47.Qf6 Kh6 48.Qf4 Qf4 49.Rf4 (49.Rf4 d3 50.Rf1+-) 1-0. banjoband (2015) - mks1340 (1950), Rated Blitz game, lichess.org, 2014.

6.d4 e4

7.a4 0-0 A) 8.Ne2 A1) 8...Be6 9.c5 (9.Nd2 Nbd7 10.c5 Bc7 11.g3 Ng4 12.h3 Nh6 13.Bg2) 9...Bc7 10.Nbc3 Nbd7 11.Nf4 Bf4 12.ef4 Qc7 13.Qd2; A2) 8...Ng4 9.h3 (9.Qd2 Qh4 10.Nec3 Nh2 11.bc6 bc6 12.cd5 Nf3 13.gf3) 9...Qh4 10.g3 Qh6 11.Nd2 Nf6 12.Nc3 Be6 13.bc6; A3) 8...Bf5 9.c5 (9.cd5 Nd5 10.Ng3 Bg6 11.Be2 Qa5 12.Nd2 Bb4 13.h4) 9...Be7 10.Ng3 Be6 11.Nd2 b6 12.Nb3 bc5 13.dc5; B) 8.Nc3 B1) 8...Be6 9.c5 (9.Qb3 Nbd7 10.Nh3 cb5 11.ab5 dc4 12.Bc4 Bc4 13.Qc4) 9...Bc7 10.Be2 h6 11.Nh3 Bh3 12.gh3 Nbd7 13.Qb3; B2) 8...Bb4 9.Nh3 (9.Qb3 a5 10.Nh3 Bh3 11.gh3 Qd7 12.Bg2 Rc8 13.Rc1) 9...Qa5 10.Qb3 Bh3 11.gh3 Rc8 12.Rg1 c5 13.0-0-0; B3) 8...Bg4 9.Qd2 (9.Qb3 Qa5 10.c5 Be7 11.h3 Bf5 12.Nge2 Nbd7 13.Nf4) 9...Nbd7 10.c5 Bc7 11.Nge2 h6 12.Nf4 g5 13.Nfe2; C) 8.Nd2 C1) 8...Bf5 9.Ne2 (9.c5 Bc7 10.Ne2 Ng4 11.h3 Nh2 12.Ng3 Qg5 13.h4) 9...Nbd7 10.c5 Be7 11.Ng3 Be6 12.Be2 Qa5 13.0-0; C2) 8...Bg4 9.Be2 (9.Ne2 Nbd7 10.h3 Bf5 11.Ng3 Be6 12.c5 Bc7 13.Rb1) 9...h5 10.c5 Bc7 11.h3 Bd7 12.Bc3 Ba5 13.Ba5; C3) 8...Ng4 9.Be2 (9.cd5 cd5 10.Be2 Qg5 11.g3 Qg6 12.Ba3 h5 13.Bd6) 9...Qh4 10.g3 Qh5 11.cd5 cd5 12.h4 Be6 13.Nh3; D) 8.c5 D1) 8...Be7 9.Nc3 (9.Ne2 b6 10.cb6 ab6 11.Nbc3 Bd6 12.Nf4 Bg4 13.Be2) 9...b6 10.cb6 ab6 11.Nge2 Qc7 12.Nf4 g5 13.Nh5; D2) 8...Bg4 9.Be2 (9.Ne2 Bc7 10.Nbc3 Nbd7 11.h3 Bh5 12.Qb3 a6 13.b6) 9...Be2 10.Ne2 Bc7 11.Nbc3 Nbd7 12.Ng3 Qe7 13.0-0; D3) 8...Bc7 9.Ne2 (9.h3 Bf5 10.Nc3 Nbd7 11.Nge2 g6 12.Nf4 Qe7 13.g4) 9...Bg4 10.h3 Bf5 11.Nbc3 Nbd7 12.Ng3 Be6 13.Be2.

7.a4 dc4 8.Qc1 A) 8...Nbd7 9.Nd2 (9.bc6 bc6 10.Nd2 0-0 11.Nc4 Bb4 12.Bc3 c5 13.Bb4) 9...0-0 10.bc6 bc6 11.Nc4 Bb4 12.Bc3 c5 13.Bb4; B) 8...a6 9.Bc4 (9.Nc3 Be6 10.Nh3 h6 11.g3 0-0 12.Nf4 Bf4 13.gf4) 9...ab5 10.ab5 Ra1 11.Ba1 0-0 12.Ne2 Nbd7 13.bc6; C) 8...0-0 9.Nd2 (9.Bc4 Nbd7 10.bc6 bc6 11.Ne2 Nb6 12.Nd2 Rb8 13.Ba3) 9...Nbd7 10.Nc4 Bb4 11.Bc3 Bc3 12.Qc3 Nd5 13.Qa3.

7.a4 dc4 8.Qc2 A) 8...Bf5 9.Bc4 (9.Nd2 0-0 10.Bc4 a6 11.Ne2 ab5 12.ab5 Ra1 13.Ba1) 9...0-0 10.Ne2 Nd5 11.Ng3 Nb4 12.Qc3 Nd3 13.Bd3; B) 8...a6 9.Bc4 (9.Nd2 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Ne4 Nc6 13.Nf3) 9...ab5 10.ab5 Ra1 11.Ba1 Bd7 12.Nd2 0-0 13.Ne2; C) 8...0-0 9.Bc4 (9.Nd2 a6 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 cb5 13.Bb5) 9...a6 10.Nd2 ab5 11.ab5 Ra1 12.Ba1 Bd7 13.Ne2.

7.a4 dc4 8.Bc4 0-0 (8...Nbd7 9.Nd2 (9.bc6 bc6 10.Ne2 0-0 11.Nd2 Rb8 12.Qc2 Nb6 13.0-0) 9...0-0 10.Ne2 Nb6 11.bc6 bc6 12.0-0 Nbd5 13.Qc2; 8...Qc7 9.Nc3 (9.Nd2 0-0 10.Ne2 a6 11.h3 ab5 12.ab5 Ra1 13.Qa1) 9...a6 10.Qc2 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Bb2) 9.Nc3 (9.Ne2 Nbd7 10.bc6 bc6 11.Nd2 Rb8 12.Qc2 Nb6 13.0-0; 9.Nd2 cb5 10.ab5 Nbd7 11.Ne2 Nb6 12.Bb3 Bf5 13.0-0) 9...Bg4 (9...Qc7 10.Ba3+= (10.Qc2 Nbd7 11.Nge2 Nb6 12.Bb3 Nbd5 13.Nd5) 10...Ba3 11.Ra3 cb5 12.Bb5 Rd8 13.Nh3; 9...Nbd7 10.a5 c5 11.Nge2 cd4 12.Nd4 Ne5 13.Be2) 10.Qb3= (10.Nge2 a6 11.h3 ab5 12.ab5 Ra1 13.Qa1) 10...Nbd7 11.a5 a6 (11...c5 12.a6 (12.Nge2 cd4 13.Nd4) 12...ba6 (12...cd4 13.ab7) 13.Ra6=) 12.b6 (12.bc6 bc6 13.Nge2) 12...c5 13.Nge2 cd4 14.ed4 Qe7 15.0-0 Rfe8 (15...Rac8 16.Rfe1 Rfd8 17.Ng3 Bg3 18.hg3+=) 16.h3 Be6 (16...Bf5 17.Ba3 Ba3 18.Qa3 Qa3 19.Ra3+=) 17.Be6+= Qe6 18.Qe6 Re6 19.Ba3 Ba3 20.Ra3 Rc8 21.f4 (21.Ng3 Kf8+=) 21...ef3 (21...Kf8 22.g4=) 22.gf3 Rce8 (22...Rec6 23.Rd1+=) 23.Kf2 Kf8 24.Rc1 h6 25.Ng3 Rc6 26.Raa1 g6 27.Nge4 Rec8 28.Ne2 Ke7 29.Rc6 Rc6 30.N4c3 (30.Rc1 Rc1 31.Nc1 Ne8+=) 30...Ne8 31.Nd5 Kd8 32.Ne3 Nd6 33.Rc1 Rc1 34.Nc1 Nf8 ½–½. Taulien,Hans_Juergen (2350) – Schludecker,Elke (2290), RSX – FSO1 remoteschach.de, 2005.

7.a4 dc4 8.Nd2 A) 8...Bg4 9.Be2 (9.Qc2 0-0 10.Ne2 Bb4 11.Nc3 c5 12.dc5 Nbd7 13.Bc4) 9...h5 10.Nc4 Bb4 11.Kf1 0-0 12.Bg4 hg4 13.Ne2; B) 8...Nbd7 9.bc6 (9.Bc4 Nb6 10.Ne2 0-0 11.bc6 bc6 12.Qc2 Rb8 13.0-0) 9...bc6 10.Qc2 Nb6 11.Nc4 Bb4 12.Bc3 Bc3 13.Qc3; C) 8...0-0 9.Bc4 (9.Qc2 Bf5 10.Bc4 a6 11.Ne2 ab5 12.ab5 Ra1 13.Ba1) 9...Nbd7 10.Ne2 Nb6 11.bc6 bc6 12.Qc2 Rb8 13.0-0.

7.a4 Be6 A) 8.Nd2 A1) 8...Nbd7 9.c5 (9.Nh3 0-0 10.c5 Bc7 11.Be2 Bh3 12.gh3 Qe8 13.a5) 9...Bc7 10.Be2 0-0 11.Nh3 Bh3 12.gh3 Qe7 13.a5; A2) 8...Qe7 9.Nh3 (9.c5 Bc7 10.Nh3 0-0 11.Be2 Bh3 12.gh3 Qe6 13.Qb3) 9...0-0 10.Be2 Bh3 11.gh3 Qe6 12.c5 Bc7 13.h4; A3) 8...0-0 9.Nh3 (9.c5 Bc7 10.Ne2 Nbd7 11.g3 h5 12.Qb3 Ba5 13.Nf4) 9...Nbd7 10.c5 Bc7 11.Be2 h6 12.Rb1 Re8 13.bc6; B) 8.Qb3 B1) 8...0-0 9.c5 (9.Nc3 Nbd7 10.Nh3 Ng4 11.cd5 cd5 12.Ba3 Ba3 13.Ra3) 9...Bc7 10.Nh3 Ng4 11.Nf4 g5 12.Ne6 fe6 13.Be2; B2) 8...Nbd7 9.Nc3 (9.c5 Bc7 10.Ne2 0-0 11.Nd2 Rb8 12.g3 Ba5 13.Bg2) 9...0-0 10.Nh3 Qa5 11.Ng5 dc4 12.Bc4 Bc4 13.Qc4; B3) 8...dc4 9.Bc4 (9.Qc2 0-0 10.Bc4 Bc4 11.Qc4 Nbd7 12.Ne2 Nb6 13.Qb3) 9...Bc4 10.Qc4 a6 11.Nc3 ab5 12.ab5 Ra1 13.Ba1; C) 8.cd5 C1) 8...Bd5 9.Nc3 (9.Ne2 0-0 10.Nbc3 Nbd7 11.Nd5 Nd5 12.Nc3 Bb4 13.Rc1) 9...0-0 10.Nh3 Nbd7 11.Be2 Qc7 12.bc6 bc6 13.Rb1; C2) 8...Nd5 9.Nd2 (9.Nc3 Bb4 10.Nge2 0-0 11.Qc2 Qa5 12.Rc1 Rc8 13.g3) 9...Qa5 10.Nh3 Bh3 11.gh3 0-0 12.Rg1 g6 13.Qc2; C3) 8...cd5 9.Nh3 (9.Ne2 0-0 10.Nf4 Bf4 11.ef4 Nbd7 12.Be2 Qc7 13.Qc1) 9...0-0 10.Nc3 Nbd7 11.Be2 Nb6 12.Qb3 Rc8 13.Ng5; D) 8.c5 D1) 8...Be7 9.Nc3 (9.Ne2 0-0 10.Nbc3 b6 11.cb6 ab6 12.Nf4 Bf5 13.Be2) 9...0-0 10.Nge2 b6 11.Nf4 bc5 12.Be2 cb5 13.ab5; D2) 8...Bf8 9.Nc3 (9.Ne2 g6 10.Nf4 Bg4 11.Be2 Be2 12.Qe2 Bh6 13.0-0) 9...g6 10.Nh3 Bh6 11.Be2 Bh3 12.gh3 0-0 13.0-0; D3) 8...Bc7 9.Nc3 (9.Be2 h5 10.Nc3 Ng4 11.Bg4 hg4 12.Nge2 Nd7 13.Nf4) 9...0-0 10.Be2 Nbd7 11.Nh3 Bh3 12.gh3 Qb8 13.Rb1.

7.a4 Qe7 A) 8.c5 Bc7 9.Nc3 (9.Ne2 0-0 10.Nbc3 g6 11.Ng3 h5 12.Nge2 Kg7 13.h3) 9...Be6 10.Nh3 0-0 11.Nf4 Bf4 12.ef4 Qc7 13.Qd2; B) 8.Qb3 B1) 8...Nbd7 9.Nc3 (9.Nh3 0-0 10.c5 Bc7 11.Be2 Qe6 12.0-0 Qf5 13.f3) 9...0-0 10.a5 dc4 11.Bc4 c5 12.Nge2 cd4 13.Nd4; B2) 8...dc4 9.Bc4 0-0 10.Ne2 Nbd7 11.Nd2 Nb6 12.Ba3 Bg4 13.Bd6; B3) 8...0-0 9.Nc3 (9.Nh3 Bg4 10.Nc3 Nbd7 11.Nf4 g5 12.Nh3 h6 13.c5) 9...Nbd7 10.a5 Qe6 11.Nh3 Qf5 12.c5 Bc7 13.Qa4; C) 8.Ne2 C1) 8...0-0 9.c5 (9.Nd2 Bg4 10.h3 Bh5 11.g4 Bg6 12.g5 Nh5 13.cd5) 9...Bc7 10.Nbc3 Bg4 11.h3 Be6 12.Qb3 Nbd7 13.Nf4; C2) 8...Bg4 9.h3 (9.c5 Bc7 10.h3 Bh5 11.Nbc3 0-0 12.g4 Bg6 13.Nf4) 9...Be6 10.c5 Bc7 11.Nec3 0-0 12.Nd2 Nbd7 13.Be2; C3) 8...dc4 9.Nd2 (9.Na3 Nd5 10.Nc4 Bb4 11.Nd2 0-0 12.Qc2 Be6 13.Rc1) 9...a6 10.Nc4 Bb4 11.Nc3 Nd5 12.Qb3 Be6 13.ba6; D) 8.Nc3 D1) 8...Bg4 9.Be2 (9.Qb3 0-0 10.h3 Bf5 11.c5 Bc7 12.Nge2 Be6 13.Rb1) 9...Be2 10.Qe2 0-0 11.c5 Bc7 12.Nh3 Nbd7 13.0-0; D2) 8...Bb4 9.Nh3 (9.Qb3 0-0 10.Be2 c5 11.dc5 Qc5 12.0-0-0 dc4 13.Bc4) 9...Bh3 10.gh3 0-0 11.Be2 Nbd7 12.0-0 Nb6 13.bc6; D3) 8...0-0 9.Qb3 (9.c5 Bc7 10.Nge2 Rd8 11.Qb3 Be6 12.Rb1 Nbd7 13.bc6) 9...Nbd7 10.Nh3 dc4 11.Bc4 c5 12.Nd5 Nd5 13.Bd5.

7.a4 Bf5 A) 8.Nc3 A1) 8...0-0 9.c5 (9.Nh3 Nbd7 10.c5 Bc7 11.Be2 h6 12.Nf4 g5 13.Nh5) 9...Bc7 10.Nge2 Bg4 11.h3 Bh5 12.g4 Bg6 13.Nf4; A2) 8...Qa5 9.Qd2 (9.Nh3 0-0 10.Qd2 Nbd7 11.cd5 cd5 12.Ne4 Qd2 13.Nd2) 9...Nbd7 10.Nh3 0-0 11.Ne4 Bb4 12.Bc3 Ne4 13.Bb4; A3) 8...Nbd7 9.c5 (9.Nge2 0-0 10.c5 Bb8 11.Ng3 Be6 12.Be2 Bc7 13.0-0) 9...Bb8 10.bc6 bc6 11.Nge2 0-0 12.Ng3 Be6 13.Be2; B) 8.Nd2 B1) 8...0-0 9.c5 (9.Ne2 Bg4 10.h3 Be6 11.c5 Bc7 12.Nc3 Nbd7 13.Be2) 9...Bc7 10.Ne2 Bg4 11.h3 Bh5 12.Qb3 Nbd7 13.Nf4; B2) 8...h6 9.Ne2 (9.c5 Bc7 10.Ne2 0-0 11.Ng3 Be6 12.Be2 Nbd7 13.0-0) 9...0-0 10.Ng3 Be6 11.Be2 Bb4 12.0-0 Nbd7 13.Qc2; B3) 8...Bb4 9.cd5 (9.Ne2 0-0 10.cd5 Nd5 11.Ng3 Bg6 12.Bc4 Qa5 13.Ba3) 9...cd5 10.Ne2 Qa5 11.Ng3 Be6 12.Ba3 Ba3 13.Ra3; C) 8.cd5 C1) 8...Nd5 9.Ne2 (9.Nc3 Bb4 10.Nge2 0-0 11.Qd2 Qa5 12.Rc1 cb5 13.Ng3) 9...0-0 10.Ng3 Bg6 11.Be2 Nd7 12.0-0 Rc8 13.Qb3; C2) 8...Bb4 9.Nd2 (9.Nc3 Nd5 10.Nge2 0-0 11.Qb3 Qa5 12.Kd1 Be6 13.Nd5) 9...cd5 10.Ne2 Qa5 11.Ng3 Be6 12.Ba3 Ba3 13.Ra3; C3) 8...cd5 9.Nc3 (9.Nh3 0-0 10.Nc3 Nbd7 11.Nf4 Nb6 12.Ba3 Rc8 13.Qb3) 9...Nbd7 10.Nge2 0-0 11.Ng3 Be6 12.Be2 Rc8 13.a5; D) 8.c5 D1) 8...Be7 9.Ne2 (9.Nd2 0-0 10.Ne2 b6 11.Nb3 a6 12.Ng3 Bg4 13.f3) 9...b6 10.Nbc3 0-0 11.Ba3 Qc7 12.Nf4 bc5 13.Bc5; D2) 8...Bf8 9.Ne2 (9.Nc3 Be7 10.Be2 0-0 11.Nh3 Bh3 12.gh3 Qd7 13.Qb3) 9...Be7 10.Ng3 Be6 11.Be2 0-0 12.Nc3 b6 13.cb6; D3) 8...Bc7 9.Ne2 (9.Nd2 Ng4 10.h3 Qh4 11.hg4 Qh1 12.gf5 Qg1 13.a5) 9...Be6 10.Nec3 0-0 11.Be2 Nbd7 12.Nd2 Ne8 13.a5.

7.a4 h6 A) 8.c5 A1) 8...Be7 9.Nc3 (9.Ne2 0-0 10.Nbc3 b6 11.Ba3 bc5 12.dc5 a6 13.Nd4) 9...0-0 10.Nge2 b6 11.Nf4 bc5 12.dc5 Bc5 13.Be2; A2) 8...Bg4 9.Be2 (9.Ne2 Bc7 10.Nbc3 0-0 11.h3 Be6 12.Nf4 Bf4 13.ef4) 9...Be2 10.Ne2 Bc7 11.Nbc3 0-0 12.0-0 Nbd7 13.Nf4; A3) 8...Bc7 9.Nc3 (9.Ne2 Be6 10.Nf4 Bf4 11.ef4 Qc7 12.Qd2 b6 13.cb6) 9...0-0 10.Nge2 b6 11.Qd2 Bb7 12.a5 bc5 13.a6; B) 8.Ne2 B1) 8...Nbd7 9.c5 (9.Nbc3 dc4 10.Ng3 0-0 11.bc6 Qb6 12.Qe2 bc6 13.Nge4) 9...Be7 10.Nbc3 0-0 11.Ng3 Nb8 12.Be2 b6 13.Ba3; B2) 8...0-0 9.c5 (9.Nd2 Be6 10.Nc3 Nbd7 11.c5 Bb8 12.Be2 Qc7 13.Rb1) 9...Bc7 10.Nbc3 b6 11.Qd2 Re8 12.h3 Be6 13.Ba3; B3) 8...Bg4 9.c5 (9.h3 Bf5 10.Nf4 0-0 11.Nc3 Bf4 12.ef4 Qc7 13.cd5) 9...Bc7 10.Nbc3 0-0 11.h3 Bh5 12.g4 Bg6 13.Nf4; C) 8.Nd2 C1) 8...Nbd7 9.Ne2 (9.c5 Bc7 10.Nh3 Nf8 11.Nf4 Ne6 12.Ne6 Be6 13.Be2) 9...0-0 10.c5 Be7 11.Nf4 a6 12.h4 Ne8 13.h5; C2) 8...Be6 9.Ne2 (9.Nh3 0-0 10.c5 Bc7 11.Be2 Bh3 12.gh3 Qd7 13.Qb3) 9...0-0 10.Nc3 Qa5 11.Be2 Nbd7 12.c5 Bc7 13.0-0; C3) 8...0-0 9.Ne2 (9.c5 Bc7 10.Ne2 Be6 11.g3 Qe7 12.Bg2 Nbd7 13.0-0) 9...Bg4 10.h3 Bh5 11.g4 Bg6 12.c5 Bc7 13.Nf4; D) 8.Nc3 D1) 8...Nbd7 9.Nh3 (9.c5 Be7 10.Be2 Nf8 11.Qc2 Rb8 12.f3 Bf5 13.Nh3) 9...dc4 10.bc6 bc6 11.Bc4 Nb6 12.Be2 Nbd5 13.Qc2; D2) 8...Be6 9.c5 (9.Qb3 0-0 10.c5 Bc7 11.Rb1 b6 12.Ba3 Re8 13.Nge2) 9...Bc7 10.Nge2 0-0 11.Nf4 Bg4 12.Qd2 g5 13.Nfe2; D3) 8...0-0 9.Nh3 (9.c5 Bc7 10.Nge2 Bg4 11.h3 Be6 12.Nf4 Bf4 13.ef4) 9...Bh3 10.gh3 Nbd7 11.c5 Bc7 12.Qb3 Qe8 13.Bg2.

7.Qb3 dc4 8.Bc4 0-0 9.Nc3=+.

7.Qb3 Be6 8.c5= Bc7 9.bc6 Nc6 10.Qb7 Nb4 11.Na3 (11.Qb4 Ba5 Pinning (11...Ba5 Decoy)) 11...Ba5 (better 11...Rb8!? 12.Qa7 Ba5–+) 12.Bb5= Bd7 (12...Nd7 13.Kf1 a6 14.c6–+) 13.Bd7 (13.Kf1!?=) 13...Nd7–/+ 14.Kf1 Rb8 15.Qa7 Nc6 (15...Nd3!? 16.Bc1 0-0–/+) 16.Qa6= Rb2 (16...Nb4 17.Qa7 Nd3–/+) 17.Qc6+– 0-0 (17...Qf6!? 18.Qf6 Nf6+=) 18.Qd5+– Qb8 (18...Bb4 19.Nc4 Rc2 20.Ne2+–) 19.Qd7 Qb4 20.Qd5 Qa3 (20...Re8 21.Qc6 Kf8 22.g3 Qa3 23.Qa6 Rf2 24.Kf2 Be1 25.Re1 Qa6 26.Re2+=) 21.Qe4 Rfb8 22.g4 (better 22.Nh3 Bc3+–) 22...Qc3 (22...Bc3+–) 23.Nf3 Qc2 (23...Qc4 24.Kg2+–) 24.Qc2 Rc2 25.Kg2 Rbb2 26.Rhf1 f6 (26...Re2 27.d5+–) 27.a4 (27.h3 Re2+–) 27...g5 (27...Re2 28.c6+–) 28.h4 h6 29.Rac1 (29.h5 Kf7+–) 29...Re2 30.c6 (30.d5 Re3 31.hg5 hg5+–) 30...Bc7 31.Rce1 Rec2 32.hg5 (32.d5 Rc4 33.Nd4 gh4+–) 32...hg5 33.d5 Kf7 (33...Rc4 34.Nd4 Be5 35.Rc1+–) 34.Rc1 (better 34.Rb1 Rb1 35.Rb1 Ke8+–) 34...Re2 (34...Bb6 35.a5! Ba5 36.Nd4 Rc1 37.Rc1+–) 35.Nd4 Re3 36.d6! Bd6 37.Nf5 Re6 (37...Bf4 38.Ne3 Rb8+–) 38.Nd6 Rd6 39.c7 Rd4 40.c8Q Rg4 41.Qg4 f5 42.Qf5 Kg7 (42...Kg8 43.Rc8 Kg7 44.Rc7 Kh6 45.Rh1) 43.Rc7 Kh6 44.Rh1 1–0. DEFFM – GuestQKTS, freechess.org, 2020.

7.c5 Bc7=+.

7.Nd2 0-0 8.Ne2 (8.a4 Qa5=+) 8...Bg4 (8...cb5 9.cd5 b4 10.Qc2=+) 9.h3 (9.c5 Bc7=+) 9...Bh5 (9...Bd7 10.a4=) 10.Qb3 (10.c5 Bc7=+) 10...Nbd7 11.g4 (11.Nc3 a5=) 11...Bg6=+ 12.g5 dc4 (12...Ne8!?=) 13.Nc4+= Ne8 14.h4 (14.Nd6 Nd6 15.Ba3 Nb5 16.Bf8 Nf8=) 14...cb5 (14...Bh5 15.Nd2=) 15.Nd6 Nd6 16.Ba3 Nb6 (16...Qb6 17.Ng3 h5 18.gh6 gh6+/–) 17.Ng3+/– h5 18.gh6 gh6 19.Rg1 Kh8 20.Bb5 (20.Qb4 Nd5 21.Qd2 a6=) 20...Rg8 (20...f5 21.h5 Bf7 22.Qb4 Nb5 23.Qb5+/–) 21.Be2 f6 22.Qe6 Nbc4 23.Bc4 Qa5 24.Kf1 Nc4 25.Be7 Nd2 26.Kg2 Kh7 27.Kh1 Qb5? 28.d5+– Qe8? 29.Rad1 Bf7 30.Qf6 Nf3 31.Nf5 Bg6 32.h5! (32...Ng5 33.Nh6 Bh5 34.Ng8 Bf3 35.Qf3 Nf3 36.Nf6 Kh6 37.Ne8 Ng1 38.Rg1 Re8 39.d6+–) 1–0. GodofChess01 – torsten64, mySchach.de, 2003.

5.c4 Nbd7

6.a4 0-0 7.cd5 (7.d4 A) 7...ed4 8.Bd4 dc4 9.Nf3 a6+=; B) 7...dc4 8.Bc4 Nb6+= (8...ed4 9.Bd4 Ne5+=) 9.Bb3 e4+=; C) 7...c6 8.cd5 Nd5 9.Bd3 Bb4+=) 7...Nd5–/+ (7...Nb6 8.Na3 Nbd5 9.Nc4 Re8+=) 8.Nf3 (8.Nc3 N7f6–/+ 9.Nd5 Nd5+=) 8...Re8 (8...e4 9.Nd4–/+ Ne5–/+) 9.d3 (9.Nc3 Nc3 10.dc3 Qf6+=) 9...c6 (9...a6 10.Nbd2+=; 9...N7f6–/+) 10.bc6+= bc6 11.Na3 (11.Nbd2 Rb8 12.Qc1 Ba6+=) 11...Qa5 (11...Bb4 12.Nd2–/+) 12.Nd2 Ba6 0–1. Giache,Gianluca – Yeung,Chun Keung (1740), corr ICCF WSTT/3/06/1, 2006.

6.a4 dc4 A) 7.Bc4 Nb6 (7...e4 8.d4 0-0 9.Nc3 Nb6+=; 7...0-0 8.d4 ed4 9.Bd4 c5+=) 8.Bb3 a6 9.Nc3 0-0+=; B) 7.Na3+= c3 8.Bc3 0-0 9.Nc4 Nd5+=.

6.a4 c5 7.cd5 Nd5 8.Nc3 Nc3 9.dc3 Nf6+=.

6.Qc2 0-0 7.f3 Qe7 8.a4 Nb6 9.Na3 Be6 10.h4 dc4 11.a5 c3! 12.dc3 (12.Bc3 Ba3 Deflection; 12.Qc3 Na4 Decoy; 12.dc3 Nbd5 Combination) 12...Nbd5 13.Nc4 Bc5 14.Bc1 (14.e4!? Ne3 15.Ne3 Be3 16.a6–/+) 14...Nc3! 15.Bb2? (15.Qc3 Bb4 Pinning (15...Bb4 Decoy)) 15...Bc4 (15...Nb5!? 16.Kf2–+) 16.Bc4 Ncd5 17.Bc1 Be3 18.Ba3 Bc5 19.Bd5 Bb4 20.Kf1 (20.Bb4 Qb4 21.Qd2 Qd2 22.Kd2 Rfd8–+) 20...Nd5 (20...Ba3?! 21.Bb7 Rad8 22.Rb1–+) 21.Qb3 Ba3 (21...Qc5 22.Bb4 Nb4 23.h5–+) 22.Ra3 (22.Qd5 a6 23.ba6 Ra6 24.Qb7 Ra5–+) 22...Rfd8 23.Ra4 Qc5 24.Re4 Nf4 25.Ne2 (25.g3 Rd2 26.Re2 Ne2 27.Ne2–+) 25...Nd3 26.Nd4 Rd4 27.Rh3 Qc1 0–1. Penteshin,Yury – Lugovskoy,D (1955), Doroshkevicha Mem, Belorechensk RUS, 2009.

6.Qc2 0-0 7.Nf3 Re8 8.Nc3 c6 9.h4 (9.d4 e4 10.Nd2 Rb8+=) 9...d4 10.Ne4 (10.bc6 bc6 11.Ne4 Ne4 12.Qe4 Nc5–+) 10...Ne4 11.Qe4 Nf6 12.Qc2 de3 13.de3 Bb4 14.Nd2? (better is 14.Bc3 Bf5 15.Qb3 Bc3 16.Qc3–/+) 14...Bf5!!–+ 15.Qd1 (15.Qf5 Qd2 Theme: Double Attack) 15...Ne4 16.Bc1 Bc3 17.g4 Ba1 (better is 17...Bg4 18.Be2 Be2 (worse is 18...Ba1 19.Bg4 Nf6 20.Rg1–+) 19.Ke2 Nf2 (19...Ba1?! 20.Ne4 Qc8 21.Nd6 Qg4 22.Kd2–+) 20.Kf2 Ba1–+) 18.gf5 Bc3 19.Rh2 (19.Qc2 Nd2 20.Bd2 Bd2 21.Qd2 Qf6–+) 19...Bd2 20.Bd2 Qd2 (20...cb5 21.cb5 Rc8 22.f3–+) 21.Qd2 Nd2 22.Kd2 cb5 23.cb5 Red8 24.Kc3 Rac8 25.Bc4 Rd1 26.Kb3?? (26.Kb4 a5 27.ba6 Rb1 28.Bb3 ba6–+) 26...b6 (26...Rb1 27.Kc3 Rc1 28.Kb3 R8c4 29.Rh1–+) 27.f3?? (better is 27.Kb4–+) 27...Rc1 (better is 27...Rb1 28.Kc3 Rc1 29.Kd3 R8c4–+) 28.Bd5 R1c3 29.Kb4 Re3 30.Rd2 Kf8 31.Bc6 ½–½. Otte,Marco – Vleeming,Vincent, Wag.Ext.4vsToren2, 2001.

6.Qc2 0-0 7.Nf3 Re8 8.cd5 Nd5 9.Bc4 N7b6 (9...Nb4 10.Qc3 Nb6 11.Ba3–/+) 10.Be2 (10.Bd3!?+=) 10...Nb4–/+ 11.Qe4? (better is 11.Qd1!? e4 12.Nd4–/+) f5–+ (11...f5 12.Qh4 Nc2 13.Kd1 Qh4 14.Nh4 Na1 15.Ba1 e4–+) 0–1. Moehring,Norbert (2165) – Mader,Sascha (1900), Bad Woerishofen op, 2003.

6.Nc3 d4 7.ed4 ed4 8.Nb1 (8.Qe2 Ne5 9.c5 Qe7+=) 8...Qe7–/+ 9.Qe2 Ne5 (9...Be5 10.d3 0-0 11.f4 Qb4 12.Kf2 Bf4 13.Ba3–/+) 10.Bd4+= Bf5 11.Kd1 0-0 12.Nf3 Nfd7 13.Qe3 b6 (13...Nf3 14.Qe7 Be7 15.gf3=) 14.Nc3 (14.Ne5 Ne5 15.f4 Ng6 16.Qe7 Be7+=) 14...f6+= 15.Be2 a6 16.Re1 Rfe8 17.ba6 Qd8 (17...Ra6? 18.c5 Nc5 19.Bc5 Bc5 20.d4+/–) 18.Nb5 Nc6 19.Qc3 Bb4 20.Qb2 Nc5 (20...Nd4? A) 21.Qb4? Nc2 (21...Ne2?! 22.Re2 Bc2 23.Ke1=) 22.Qb2 Nc5–+ (22...Na1?! 23.Qa1 Ra6 24.Nfd4–+); B) 21.Qd4?! Be4= (worse is 21...Ra6 22.Bd3 Re1 23.Ne1 Bd3 24.Nd3+/–); C) worse is 21.Nbd4 Be4 22.Qb4 c5+–; D) 21.Nfd4 Bc5 22.Nf5 Bf2 23.Rf1+–) 21.Be3 Ra6 22.a3 Ba5 23.Nfd4 Nd4 24.Nd4 (24.Qd4 Bd7+=) 24...Bg6 25.Ra2 (25.Qb5 Be4 26.Bf3 Ra8=) 25...Be4 26.f3 Bg6 27.Bg1 Qa8 28.Ra1 Rd8 29.Be3 c6 30.f4 Qc8 31.Rf1 Be4 32.Bf3 Ra7 33.Rg1 Rad7 34.Ra2 Qa6 35.Be2 Rd6 36.h3 Bd3–+ (36...Bd3 37.Bd3 Nd3–+) 0–1. Kim,Oi_sin (2015) – Teske,Heike (2170), RSX15E3 – A00 – SokolskyT–1, 2007.

6.d3 dc4 7.dc4 0-0 8.Nf3=+.

6.d3 c6 7.Nc3 (7.d4 cb5 8.de5 Be5 9.Be5 Ne5 10.cd5 Qd5 11.Qd5 Nd5 12.Bb5 Ke7+=) 7...a6 8.bc6 bc6 9.Nf3 Rb8 10.Rb1 0-0 11.Be2 (11.Qc2 Bc5+=) 11...Qa5 12.Qc2 e4 (12...c5 13.0-0 d4 14.Qa4 Qa4 15.Na4–/+) 13.Nd2 ed3 14.Bd3 Ne5 15.0-0 dc4 (15...Nd3 16.Qd3 Rd8 17.cd5 Nd5 18.Nd5 Qd5 19.Qd5 cd5 20.Bd4=) 16.Be2 Neg4 (16...Rd8 17.Bc4 (worse is 17.Nc4 Nc4 18.Bc4 Bf5–/+) 17...Nfg4 18.h3=) 17.h3 Qh5 (17...Ne5 18.Rfd1= (worse is 18.Nc4 Nc4 19.Bc4 Qe5+=)) 18.Nce4 (worse is 18.Bg4 Ng4 19.Nc4 Bh2 20.Kh1 Bc7+=) 18...Ne4 19.Ne4 Bc7? (better is 19...Bh2 20.Kh1 Bc7=) 20.Rfd1+/– (worse is 20.Bg4 Bg4 21.Qc3 Rb2 22.Qb2 Be2+=) 20...Qh6 21.Bg4 f5 (21...Bg4 22.hg4 Qh2 23.Kf1 Qh1 24.Ke2 Qg2 25.Qc4 Qg4 26.f3 Qg2 27.Nf2+/–) 22.Nf6+– gf6 23.Qc4 Kh8 24.Bf3 (24.Qc6?! Rb2 25.Rb2 Be5+=) 24...Qg7 25.Bc6 (25.Qc6 Bb7 26.Bf6 Bc6 27.Bg7 Kg7 28.Bc6 Rb1 29.Rb1 Rb8 30.Rb8 Bb8+–) 25...f4 26.ef4 (26.Bd7 fe3 27.Qc7 e2+–) 26...Bh3+/– 27.Bc3 (27.Qa6?! Bf5 28.Qe2 Bb1 29.Rb1 Bf4=) 27...Rbc8 (27...Rb1 28.Rb1 Bc8 29.Bb7+–) 28.Rb7+– Rg8 (28...Bf5 29.Bb4 Rg8 30.Bd6+–) 29.g3 Bf5 30.Bg2 (30.Qa6 Rgf8+–) 30...Rgf8 31.Qa6 Qh6 (31...Qg6 32.Bb4 Rfe8 33.Bc6+–) 32.Rd5 Bg4 (32...Qg6 33.Rbb5 Be5 34.Re5 (34.fe5?! Rc3 35.Rbc5 Rc5 36.Rc5 fe5 37.Qg6 hg6+–) 34...fe5 35.Be5 Kg8 36.Bd5 Rf7 37.Qg6 Bg6 38.g4+– (worse is 38.Bf7 Kf7 39.Rb4 Bf5+–)) 33.Rg5 Bd1 (33...Bd7 34.Rc5 Bf4+–) 34.Qe6 (34.Qe6 Be2 35.Qe2 Bf4 36.Rh5+–) 1–0. Sternik,Ryszard – Jankowski,Jerzy, corr Poland, 1999.

6.d4 0-0 7.c5+= Be7 8.c6 (8.de5 Ne4 9.Qd5 Nec5=) 8...Bb4 (8...bc6 9.de5 Bb4 10.Ke2=) 9.Nc3 (9.Bc3!? Bc3 10.Nc3 bc6 11.bc6+=) 9...ed4 (9...bc6 10.de5 Ne5 11.a3–/+) 10.ed4 (better is 10.Qd4!? Bc5 11.cb7 Bb7 12.Qh4+=) 10...Re8 (10...bc6 11.bc6 Ne4 12.Qf3–/+) 11.Be2 Nb6 (11...bc6 12.bc6 Nb8 13.a3 Bc3 14.Bc3 Nc6 15.Nf3–/+) 12.Kf1 (12.cb7 Bb7 13.Qb3 Qe7–/+) 12...Bc3 (12...bc6 13.bc6 Re6 14.Qb3 Bc3 15.Qc3–+) 13.Bc3–/+ Ne4 (13...bc6 14.bc6 Qd6 15.Qb3–/+) 14.Be1 (14.cb7 Bb7 15.Qc2 c6–/+) 14...bc6 15.bc6 Qf6 16.Rc1 Bf5 (16...Re6 17.Nf3 Rc6 18.Rc6 Qc6 19.Ne5–/+) 17.f3 (17.Nf3!?–/+) 17...Nd6–+ 18.Bf2 (18.Rc5 Nbc4 19.Qa1 Ne3 20.Kf2 Bg6–+) 18...Ndc4 19.Rc3 (19.g4 Bg6–+) 19...Re6 (19...Qc6 20.Qc1–+) 20.g4 Bg6 21.Qc1 (21.h4 Rc6 22.h5–/+) 21...Rae8 22.h4 White prepares the advance g5 22...h5 (22...Na4 23.Rb3 Rc6 24.h5–+) 23.g5? (better is 23.gh5!? Bh7 24.Qg5–/+) 23...Qe7 24.Bd3 (24.Bc4 Nc4 25.Nh3 Rc6–+) 24...Bd3 (24...Na4 25.Bg6 Nc3 26.Bf7 Qf7 27.Qc3 Rc6 28.Qd3–+) 25.Rd3 Rc6 (25...Qd6 26.Nh3–+) 26.Kg2 Re6 27.Rh2 (27.f4 Re4–+) 27...Nd7 (27...Qd7 28.a3–+) 28.Kh1 (28.Rb3 a5–+) 28...Nf8 (28...Qd6 29.Rg2–+) 29.Rb3 Rb6 (29...a6 30.Bg3–+) 30.Rb6 (30.Bg3 Rc6–+) 30...ab6 (30...cb6 31.Bg3–+) 31.a4 (31.Bg3 Ne6 32.Re2 Qd7–+) 31...Qb4 32.Qc2 Ra8 (32...c6 33.Ne2–+) 33.Qf5 (33.Ne2 Ra4 34.Nf4 Qa5–+) 33...Qd6 (33...Ra4?! 34.Qd5 b5 35.Qc6–+) 34.Bg3 (34.Rg2–+) 34...Qg3 35.Qd5 Ra4 36.g6 (36.Rh3 Ne3 37.Qf7 Kf7 38.Rg3 Rd4–+) 36...Qg6 37.Rg2 Qg2! (37...Qg2 38.Kg2 Ne3 39.Kh3 Nd5–+) 0–1. Zimmermann,Joerg – Boesenberg,Heiko (1725), Landesliga Ost2, 2002.

6.d4 ed4 7.Bd4 dc4 8.Nf3 Nb6 9.Nbd2 0-0 10.Be2 Bd7 11.a4 a6 12.ba6 Ra6 13.a5 Nbd5 14.Bc4 (worse is 14.Nc4 Bb4 15.Kf1 Re8+=) 14...Ra8 15.0-0 c5 The isolani on a5 becomes a target 16.Bb2 Be7 (16...Ra5 17.Ra5 Qa5 18.Bd5 Nd5+–) 17.Qb3+= Nb4 18.Ng5 Qe8 (18...Ra5 19.Nf7 Qc7 20.Ra5 Qa5 21.Bf6 gf6 22.Ne5 Kh8 23.Nd7+–) 19.e4 Bb5 20.Rfe1 Rd8 21.Ngf3 Nh5 22.Be5 Bf6 23.Bf6 Nf6 24.e5 Bc4 25.Qc4 Nd7 26.Ne4 Qe7 27.Rab1 Nc6 Will e5 fall? 28.Qc3 Nb4 29.Rbd1 Ra8 30.Nd6 Ra5 Opening the a–file gets White a lot of play 31.Nf5 Qe6 32.g4 Ra4 33.Ng5 Nd5?? (33...Qe8 34.e6 f6 35.Rd7+– (35.ed7 Qd8 36.Qb3 c4 37.Qa4 b5 38.Qb5 Nc6 39.Qc4 Kh8 40.Nf7 Rf7 41.Qf7 Qg8 42.Re8 Ne7 43.Qg7)) 34.Ne6 (34.Qh3 Qg6 35.Rd5 Qg5 36.Rd7 Rg4 37.Ng3 b5+/–) 34...Nc3 35.Nf8 Nd1 (35...Rg4 36.Kf1 Nf8+/–) 36.Nd7+– Nc3 37.Nc5 Rg4 38.Kf1 b5 39.Ra1 Threatening mate: Ra8 39...h6 40.Nd6 Rd4 41.Ra8 Kh7 42.Nf7 Kg6 43.Rf8 Rd1 44.Kg2 Nd5 45.Ne6 Re1 46.f4 b4 47.Nd6 b3 48.Rb8 Re3 49.Rb5 Ne7 50.h3 Rd3 51.f5! Kh7 (51...Nf5 52.Nf4 A double attack) 52.Nf8 Kg8 53.Rb8 Rd2 54.Kg3 Rd3 55.Kf2 (55.Kg4 Nc6 56.Rc8 Ne5 57.Kf4 g5 58.Ke5 Rh3 59.Ng6 Kg7 60.Rc7 Kg8 61.Kf6 b2 62.Rg7) 55...Nf5?? (55...Nc6 56.Re8 g5 57.fg6 Rf3 58.Kf3 Ne5 59.Ke4 Ng6 60.Ng6 Kh7 61.Kf5 Kg7 62.Re7 Kg8 63.Ne4 b2 64.Nf6) 56.Nf5 Rd2 57.Ke3 Rd1 58.e6 Re1 59.Kd4 g5 (59...Rd1 60.Kc3 Rh1 61.Ne7 Kh8 62.Nfg6 Kh7 63.Rh8) 60.Rb7 (better is 60.Nd7 Kh7+–) 60...Rd1 61.Ke5 Re1 62.Kf6 Rf1 63.Ng6 Rf5 64.Kf5 g4 1–0. Mely (2460) – Yorkie (2275), ChessWorld.net, 2003.

6.d4 e4 7.c5 Be7 8.Nc3 0-0 9.Qb3 c6 10.a4 Ng4 11.h3 Nh6 12.Nge2 f5?? (12...Bc5!? 13.bc6 bc6 14.dc5 Nc5=+) 13.Nf4 (better 13.bc6 bc6 14.Nd5+/-) 13...g5? (13...Nf6 14.Rb1+=) 14.Nfd5?? (better 14.Ne6 Nc5 15.Nc5+-) 14...cd5+= 15.Nd5 Kh8 (15...Nf7+/-) 16.b6 (better 16.Ne7!? Qe7 17.c6 bc6 18.bc6+/-) 16...ab6= 17.cb6 (17.Ne7 Qe7 18.d5 Rf6 19.d6= (worse 19.Bf6 Qf6 20.Rb1 Nc5-+)) 17...Bf6 (better 17...Bd6=+) 18.Nc7+/- Ra5? (18...Rb8 19.Ne6 Qe8 20.Nf8 Qf8 21.Bc4+/-) 19.Ne6 (19.Qb4!? Nb6 20.Qb6 Rf7 21.Qa5 Rc7+-) 19...Qb6+/- 20.Qb6 Nb6 21.Nf8 1-0. zembelek (1990) - garbaim (2055), Rated Blitz game, lichess.org, 2014.

6.Nf3 0-0 7.Qb3 Nc5 8.Qc2 e4 9.Nd4 a6 10.d3 (10.Nc3 dc4 11.Bc4 Re8=+) 10...ed3-/+ 11.Bd3 Nd3 12.Qd3 dc4 13.Qc4 ab5 14.Nb5 Be6 15.Qe2 Bb4 16.Bc3 Bc5 17.Nd4 (17.0-0 Nd5=+) 17...Bg4 18.Qb2 (18.Qc4 Be7=+) 18...Re8 (better 18...Bd4!? 19.Bd4 c5-+) 19.0-0=+ Qd5 (19...Ne4 20.h3 Bh5 21.a4=+) 20.Nd2 (20.Nb5 Qc6=) 20...Bb6 (20...Ba3 21.Qb3=+) 21.N4f3 Re6 22.a4 Ne4 (better 22...Ba5!? 23.Ba5 Ra5=) 23.Ne4+/- (23.Bg7? Nd2 24.Nd2 Bh3-+) 23...Qe4 24.Ng5 (24.Bg7 Bf3 25.Bh8 Rg6 26.Qb1 Rg2 27.Kh1 Rg3) 24...Qg6 25.Ne6 Be6 26.a5 (26.Qb5 Bh3 27.Qd5 Bf5+/-) 26...Bh3? (better 26...Bd5 27.f3 Be3 28.Kh1 Qg5+=) 27.g3?? (better 27.f3 Bc5 28.Rfd1+-) 27...Qe4 (27...Qc6!? 28.f3 Be3 29.Kh1 Rd8-/+) 28.f3-/+ Be3 29.Kh1 Qd5 30.Rad1 Qc6 31.Bg7 Bf5?? (better 31...Bf1 32.Rf1 Ra5-/+) 32.Bh8+- Qg6? (32...Bh6 33.Qe5 Qc2 34.g4+-) 33.Qf6 (better 33.Rfe1 Bc5 34.Qb7+-) 33...Qf6 (33...Bg5 34.Qg6 hg6 35.Bc3+/-) 34.Bf6+- Be6 35.Bc3 Bc5 36.Kg2 Bd6 (36...b6 37.Ra1 ba5 38.Ba5+-) 37.h4 Ra6 38.g4 Rc6 39.Be1 h5 (39...f5 40.gf5 Bf5 41.Bg3+-) 40.g5 (40.gh5 Ra6+-) 40...Bc8 (40...Ra6 41.Rf2+-) 41.f4 (better 41.Bg3 Ra6 42.Bd6 cd6 43.Ra1+-) 41...Bc5?? (better 41...b6+-) 42.Bf2 (better 42.Rd8 Kh7 43.Rc8+-) 42…Bg4 (42...Bg4 43.Rc1 b6+-). zembelek (1985) - Albator (2145), Rated Blitz game, lichess.org, 2013.

6.d4 dc4

7.Bc4 0-0 8.Nd2–/+.

7.Bc4 0-0+= 8.Ne2 Nb6 9.Bb3 e4+=.

7.Bc4 Nb6 8.Bb3 e4 9.Ne2 a6+=.

7.Bc4 e4 8.Nc3 Nb6 9.Bb3 0-0+=.

7.Bc4 Qe7 8.a3 (8.Nd2 0-0+=) 8...0-0 (8...Nb6 9.Nd2 e4 10.Ne2–/+) 9.Ne2 (9.Nd2 a6 10.ba6 b6–/+) 9...e4 (9...Nb6 10.Nd2–/+) 10.Ng3 (10.Nec3 Nb6 11.Be2 h5+=) 10...Nb6–/+ 11.Bb3 Bg4 (11...Be6 12.Qc2–/+) 12.Qc2+= h5 (better is 12...a6 13.Nc3 ab5 14.Nb5 Be6+=) 13.Nd2 e4 draws heavy fire (better is 13.Nc3!? Rae8 14.h3+=) 13...Rfe8–/+ 14.h3 Bd7 15.Nc4 h4 (15...Bb5 16.Ne5 Bd3–/+ (16...Be5?! 17.de5 Bd3 18.Qd1=)) 16.Ne5? (better is 16.Ne2+=) 16...hg3–+ (16...Be5 17.de5 Nfd5 18.Ne4 (worse is 18.Qe4 hg3 19.Bd5 Nd5 20.Qd5 gf2 21.Kf2 Rad8+=) 18...Bb5 19.0-0-0+=) 17.Bf7 Kh7 18.Nf3?? (18.Be8 Re8 (18...Ne8?! 19.Qe4 Kg8 20.0-0+=; 18...Be8?! 19.a4–+; 18...Qe8?! 19.a4–+) 19.Qe2 gf2 (19...Be5?! 20.de5 gf2 21.Kf2–+) 20.Kf2 Rf8–+) 18...Kh8 (better is 18...Rf8 19.Ba2 Bb5–+) 19.Be8?! (19.Ne5 Be5 20.Be8 gf2 (20...Be8?! 21.de5 gf2 22.Kf2–/+; worse is 20...Re8 21.de5 gf2 22.Kf2–+; 20...Qe8?! 21.de5 Nfd5 22.Qe4–/+) 21.Kf2 A) 21...Be8?! 22.de5 Nfd5 23.Qe4–/+; B) 21...Re8?! 22.de5 Nfd5 23.Qe4–+; C) 21...Qe8?! 22.de5 Nh5 23.Qe4+= (23.Qc7?? Rc8 24.Qd6 Rc2 25.Kg1 Nc4–+); D) 21...Bg3 22.Kg3 Qd6 23.Kf2 Re8–+ (23...Be8?! 24.a4–+; 23...Ne8?! 24.Qe4 Nf6 25.Qh4 Kg8 26.e4–+)) 19...Re8 (better is 19...gf2 20.Qf2 Qe8–+ (20...Re8?! 21.Ne5 Be5 22.de5–+; 20...Be8?! 21.Ne5–+; 20...Ne8?! 21.Ne5 Be5 22.de5–+; 20...ef3?! 21.Bd7 fg2 22.Rg1–+)) 20.Ng5?? (20.Ne5 gf2 (worse is 20...Be5 21.de5 Nfd5 22.Qe4–+) 21.Kf2 Kh7–+) 20...Bf5 (better is 20...Bb5 21.Bc1 Bd3–+) 21.0-0 Bg6 22.Rae1 (22.Qe2 Nbd5 23.a4 Nh5–+) 22...Ng4!! 23.f4 (23.hg4 gf2 Double attack (23...Qg5 Discovered attack; 23...Qg5 Decoy)) 23...Nh2 24.Rf2 (24.Qb3 Qd7–+) 24...gf2 25.Qf2 Kg8 (better is 25...Rf8 26.Qh4 Kg8 27.Kh2 Rf5–+) 26.Kh2 (26.Qc2–+) 26...Qg5 27.g3 Qb5 0–1. Pietrzak,Wojciech – Moskwinski,Tadeusz, Warszawa Poland, 2001.

7.Nd2 a6 (7...ed4 8.Bd4 Ne5 9.Qc2 Nd3+=; 7...c3 8.Bc3 0-0 9.Ngf3 Nd5=; 7...0-0 8.Bc4 e4 9.Qc2 Nb6+=) 8.Nc4 Bb4 9.Nd2 ed4+=.

7.Nf3 e4 8.Nfd2 0-0 9.Nc3 Nb6+=.

6.cd5 Nd5

7.Nc3 Nc3 8.Bc3 0-0 9.Qc2 Qe7 10.Ne2 e4 (10...Rd8 11.Ng3+=) 11.Ng3= Bg3 12.hg3 Rd8 13.d3 Nc5 14.d4 Nd7 15.a3 Nf6 16.Bb4 Qe8 17.Qc7 Nd5 18.Qe5 Qe5 19.de5 Nb4 20.ab4 Bf5 21.Rh4 Rdc8 22.g4 Bg6 23.f4 h6 24.Kf2 Rc2 25.Kg3 Rb2 26.f5 Bh7 27.Rc1 Rb4 28.Rc7 a5 (28...a6 29.Bc4 Rf8 30.e6 fe6 31.Be6 Kh8 32.f6 Rf6 33.Rc8 Bg8 34.Bg8+– (34.Rg8?! Kh7 35.ba6 ba6+–)) 29.e6 fe6 (better is 29...f6!?+–) 30.f6! (30.f6 gf6 31.Rh6+–; 30.fe6?! b6+=) 1–0. Taulien,Hans_Juergen – Ritschel,Stephan, remoteschach.de, 2003.

7.Nc3 Nc3 8.Bc3 0-0 9.Qc2 g6+=.

7.Nc3 Nc3 8.Bc3 0-0 9.d4 e4 10.Qc2 Qh4 11.g3 Qg4 12.Ne2 Qf3 13.Rg1 Nf6 14.Nf4 Qg4 15.h3 Qf5 16.a3 Bd7 17.Bb4 Rac8 18.Qb1 Rfe8 19.Qb3 Be6 20.Ne6 Bb4 (20...Re6!? 21.g4 Qg5=) 21.ab4+= Re6 22.g4 Qg6 23.Ra7 Rb6 24.Be2 Qg5 (24...Ne8 25.Qd5+=) 25.Qc2+/– h6 26.Kf1 (26.Qc5!?+/–) 26...Qh4+= 27.Rg3 h5 28.g5 Ne8 29.Qa2 Nd6 30.Ra8 Ra8 31.Qa8 Kh7 32.Ke1 Kg6 (32...g6!?+/–) 33.Qd8+– Nb5 34.Bb5 Rb5 35.d5 (35.Qc7 Rg5 36.Qe7 Kh6+–) 35...Rb6? (35...Rb4 36.Qc7 Rb1 37.Ke2 Rb2 38.Kf1 b5+–) 36.Qc7+– Ra6 37.Qb7 (better is 37.d6!? Ra1 38.Ke2 Ra2 39.Kf1 Ra1 40.Kg2 Rd1+–) 37...Ra1 38.Ke2 Ra2 39.Kf1 Rc2 (39...Kh7 40.Qe7 f6 41.g6 Kh6+–) 40.d6 Rd2 41.d7 Rd1 42.Kg2 Rd3 (42...Kf5 43.d8Q! Rd8 44.Qf7 Ke5 45.Qe7 Kd5 46.Qd8 Kc4 47.Qd4 Kb5 48.Qg7+–) 43.Qa6 (better is 43.Rg4! hg4 44.Qe4 f5 45.Qe8 Kh7 46.g6 Kh6 47.Qh8 Kg6 48.Qh4 gh3 49.Kh3 Rd7+–) 43...Kf5 44.Qd3! ed3 45.f4 Ke6 46.d8Q d2 47.Qd2 Ke7 48.b5 f6 49.Qb4 Kf7 50.g6 Ke6 51.f5! 1–0. Jesche,Lothar (2300) – Elschner,Gerald (2205), RSX15E3 – A00 – SokolskyT–1, 2007.

7.Nc3 Nc3 8.Bc3 0-0 9.Nf3 e4 10.Nd4 Ne5 (10...Qg5 11.h4 Qf6 12.h5=) 11.Qc2= f5 (11...Qh4 12.Be2=) 12.Be2 Qh4 13.g3 (13.0-0 Be6 14.g3 Qh3–/+) 13...Qh3 14.Bf1 Qh6 15.h4 (15.Be2 Bd7=) 15...Kh8 (15...a6 16.Be2+=) 16.Be2= Bd7 (16...Rf6 17.d3 ed3 18.Bd3=) 17.a4 (17.0-0 Rf6=) 17...c5 (17...Rf6 18.a5=) 18.bc6= bc6 (18...Nc6 19.0-0=) 19.Rb1 (19.0-0 Rab8=) 19...a6 20.a5 (better is 20.0-0!?=) 20...c5–/+ 21.Nb3 Bb5 Black intends c4 (better is 21...Nf3 22.Bf3 ef3–/+) 22.Be5+= Exerts pressure on the isolated pawn 22...Be2 23.Bd6 (better is 23.Bg7!? Kg7 24.Qc3 Kg8 25.Ke2 Qh5 26.Kf1+=) 23...Bd3+= 24.Qd1 (better is 24.Qc5!? Rfc8 25.Bc7 Bb1 26.0-0–/+) 24...Qd6–+ 25.Rc1 c4 (25...Rfc8 26.h5 h6 27.Rc3–+) 26.Nd4–/+ f4 (better is 26...Rab8!?–/+) 27.gf4+= Rf4 (27...Qg6 28.Ne2+=) 28.ef4= Qd4 29.Qg4 (29.Rg1 Qf6=) 29...Rf8 (29...Qb2 30.Rc3 Rb8 31.Qd1–/+) 30.h5 (30.Qg5!?=) 30...Qb2+= 31.Qd1?? (better is 31.Rc3+=) 31...Rf4–+ 32.h6 (32.Rc3 e3! 33.f3 (33.fe3?? Qb7 34.ef4 Qh1 35.Kf2 Qd1–+) 33...Rf3 34.Rc2 Bc2 35.Qf3 Qc1 36.Ke2 Qd2 37.Kf1 e2 38.Qe2–+) 32...g6 (better is 32...e3 33.fe3 Qe5 34.hg7 Kg8–+) 33.Rc3 (33.Rh2–+) 33...Qb4?? (better is 33...e3 34.Rd3 ef2 (34...cd3?! 35.fe3 Rf5 36.Rf1=) 35.Kf1 cd3–+) 34.Rg1 (34.Rc4 Qe7 35.Rc8 Rf8 36.Rf8 Qf8 37.Qb3+–) 34...Qc5–+ 35.Rg2 (35.Rf1 Bf1 36.Re3–+) 35...Qf8 (35...Rh4 36.Rg1 Rh2 37.Qe2 Be2 38.Rg2 Rg2 39.d3 Qf2 40.Kd2 Bg4 41.Kc1 Qb2) 36.Qa4? (36.Qa1 Kg8 37.Qb2 Qh6 38.Qb8 Rf8 39.Qh2–+) 36...Qh6?? (better is 36...Rh4 37.Rg1 Rh2–+) 37.Rg1?? (better is 37.Qe8!? Rf8 38.Qe5 Qg7 39.Qd6–/+) 37...Rf8 (better is 37...Qh5 38.Rd3 cd3 39.Qd4 Kg8–+) 38.Qc6?? (better is 38.Qb4 Kg8 39.Qc5–+ (39.Rc4 Qh2 40.Qf8 Kf8 41.Rf1 Qg2 42.Rc8 Ke7 43.Rc7 Kd6 44.Rd7 Kd7 45.Rh1 Qh1)) 38...Qh2 39.Rf1 Rf4 (39...Rf4 40.Qa8 Kg7 41.Qa6 Qh5 (41...Bf1?! 42.Qa7 Rf7 43.Qd4 Kh6 44.Qe3 g5 45.Kf1+=) 42.Qa7 Kg8 43.Rd3 cd3 44.Qb8 Rf8 45.Qb3 Rf7 46.Qb8 Kg7–+; 39...Bf1 40.Qc5 Rf5 41.Qd4 Qe5 42.Qe5 Re5 43.Kf1–/+) 0–1. Jabloun,Bilel (1985) – Amdouni,Zoubaier (2170), Coupe de Ramadan, 2018.

7.Nf3 0-0 8.a4 Re8 9.Be2 N7f6 10.Nc3 Nb6 (10...e4 11.Nd4=+) 11.0-0 a5 (11...e4 12.Ne1=+) 12.d3 Bg4 13.h3 Bh5 14.Nh2 Bg6 15.Ng4 Ng4 16.Bg4 f5 17.Bf3 Rb8 18.Re1 Qg5 19.Ne2 (19.Nd5 Nc8=) 19...Bb4 (19...e4 20.de4 fe4 21.Bg4-/+) 20.Rf1 (20.Bc3 e4 21.de4 fe4 22.Bg4-/+) 20...e4-/+ 21.de4 fe4 22.Bg4 Rbd8 (22...h5 23.Bd7 Rbd8-+ (23...Nd7?! 24.Qd7 Re7 25.Qd4=)) 23.Qe1?? (better 23.Qc2 c5 24.bc6=) 23...h5 (better 23...Be1 24.Rae1 Na4-+) 24.Qc1 hg4 (24...Re7 25.Bh5 Bh5 26.Nf4-+) 25.hg4? (better 25.Qc7 Bf7 26.Qb6-+) 25...Qg4 (25...Bd6!? 26.Ba3 Be5 27.Bb2-+) 26.Qc7 Qe2?? (better 26...Bf7 27.Qb6 Qe2-+) 27.Qb6 (27.Qg7) 27...Qb2 (better 27...Rd6 28.Qb7 Qb2-+) 28.Qg6 Qf6 29.Qg4 Rd2 30.Rac1 Red8 (30...Qe6 31.Qh5-+) 31.g3? (31.Qe4 R2d7-+) 31...b6 (31...Qf3 32.Qe6 Kf8 33.Rc8-+) 32.Kg2? (better 32.Qe4 Bc5 33.Rc2-+) 32...Rf8 33.Rc6 (33.Qe4 Bc5 34.Rc2 Qf2 35.Rf2 Rff2 36.Kh3 Rc2 37.Qe8 Rf8-+) 33...Rf2 34.Rf2 (34.Kh3 Rh2! 35.Kh2 Qf1 36.Qe6 Kh8 37.Qh3 Qh3 38.Kh3-+) 34...Qf2 35.Kh3 Qf5 (35...Qf1 36.Kh4 Be7 37.Qg5 Bg5 38.Kg5 Qf5 39.Kh4 g5 40.Kh5 Qh3 41.Kg6 Qh7 42.Kg5 Rf5 43.Kg4 Qh5) 36.Kh4 (36.Qf5 Rf5 37.Rb6 Rf3-+) 36...Qg4 (36...Be7 37.Rf6 Qf6 38.Qg5 Qg5 39.Kh3 Rf2 40.g4 Qe3) 37.Kg4-+ Rf3 38.Rb6 Re3 39.Kf4 Ra3 40.Ke4 Ra4 41.Rb8 (41.Kf5 Ra1-+) 41...Kh7 42.b6 (42.Kd5 Be1 43.b6-+) 42...Bd6 43.Kd5 Bb8 44.Kc6 Ra3 (better 44...Rg4 45.Kb7 Bg3 46.Ka7-+) 45.Kb7 (45.g4 Rb3 46.Kb7 a4 47.Kb8 Rb6 48.Kc7 Rg6 49.Kb7 a3 50.Kb8 a2 51.Ka7 a1Q 52.Kb7 Qa6 53.Kc7 Qa7 54.Kc8 Rf6 55.g5 Rf8) 45...Bg3 46.Kc6 Rb3 47.Kc5 Rb1 48.b7 a4 49.Kc4 a3 50.b8Q Plans a2. 50...Bb8 51.Kd3 (51.Kc3 Be5 52.Kd3 a2 53.Kd2 a1Q 54.Ke3 Qd4 55.Kf3 Rf1 56.Kg2 Qf2 57.Kh3 Qg3) 51...a2 52.Ke4 (52.Kd2 a1Q 53.Kd3 Qa6 54.Kd4 Rd1 55.Ke3 Qf1 56.Ke4 Qd3) 52...a1Q 53.Kf3 (53.Kd5 Rd1 54.Ke4 Qa4 55.Kf3 Rd2 56.Ke3 Qf4) 53...Qa4 (53...Qc3 54.Ke4 Rb4 55.Kd5 Qc4) 54.Ke2 (54.Kf2 Rb3 55.Ke1 Rb2 56.Kf1 Qd1) 54...Qb3 (54...Qe4 55.Kd2 Rb2 56.Kc3 Be5) 55.Kd2 (55.Kf2 Rb2 56.Ke1 Qe3 57.Kf1 Qf2) 55...Rb2 (55...Bf4 56.Ke2 Qe3) 56.Kc1 (56.Ke1 Qe3 57.Kf1 Qf2) 56...Qc3 (56...Bf4) 57.Kd1 Qd2 0-1. brucepeng (1960) - jukebo0x (1995), lichess.org, 2021.

7.Nf3 0-0 8.Bc4 N7b6 9.Bd5= Nd5 10.Be5 Be5 11.Ne5 Qg5 12.Nf3 Qg2 13.Rg1 Qh3 14.Rg3 Qh5?? (14...Qf5!?=) 15.Rg5+= Qh3 16.Rd5 Bg4 17.Ng5 Qg2 18.f3 Be6 19.Rc5 (19.Qb3 Qg1 20.Ke2 Bd5 21.Qd5 Qh2 22.Kf1 c6 23.bc6 Rac8=+) 19...Qg1 (19...b6 20.Nh7 Qh1 21.Ke2 Qh2 22.Ke1 Qh7 23.Rc1=+) 20.Ke2= Qh2 21.Kf1 b6 22.Ne6 fe6 (22...Qh3 23.Kf2 Qh2 24.Kf1 Qh3 25.Kg1 Qg3 26.Kh1 Qh3 27.Kg1 Qg3 28.Kh1 Qh3 29.Kg1=) 23.Rg5+= Qh3 (better 23...Qh1!? 24.Rg1 Rf3 25.Ke2 Qh5+=) 24.Kf2+/- Rf3 (24...a6!? 25.ba6 Ra6+-) 25.Qf3+- Rf8 1-0. onur604 (2320) - Khalimirov (2155), Casual Rapid game, lichess.org, 2021.

7.Nf3 f6 8.Bc4 (better 8.d4=) 8...Qe7?? (better 8...N7b6 9.Bd5 Nd5=+) 9.Bd5+- Nb6 10.Bb3 Bg4 11.Qc2 Bf3 12.gf3 0-0-0 (12...a6 13.ba6 Ra6 14.Rg1+-) 13.a4 Nd7 14.Nc3 Nc5 15.Nd5 (15.Bd5 Kb8+-) 15...Qe8 Black prepares e4 16.Bc4 Qh5 17.Ke2?? (better 17.Be2+-) 17...e4+= 18.Bd4?? (18.Rag1 Qf3 19.Kf1+-) 18...Qf3-+ 19.Ke1 Qh1 20.Ke2 Qf3 21.Ke1 Bh2 (better 21...Nd3 22.Bd3 ed3 23.Qd3 Qd5-+) 22.Bc5 (22.Ne7 Kd7 23.Bc5-+) 22...Rhe8 (better 22...Qh1 23.Bf1 Rd5-+) 23.Ba7 Re5?? (better 23...Rd5 24.Bd5 Qh1 25.Ke2 Qf3 (worse 25...Qa1 26.Bb7 Kb7 27.Bd4+/-) 26.Ke1 Qh1 27.Ke2 Qf3 (worse 27...Qa1 28.Bb7 Kb7 29.Bd4+/-) 28.Ke1=) 24.b6 (24.Nb6 cb6 25.Be6) 24...Red5 (24...Qh1 25.Bf1 Red5 26.bc7-+) 25.Bd5 Rd5 26.bc7?? (26.Qc4 Rg5 27.Qg8 Kd7 28.Qf7 Kd6 29.Qc7 Ke6 30.Qh2-+) 26...Bc7 (26...Bg3 27.d3 ed3 28.Qb2-+) 27.Bd4?? (better 27.Rc1 Qh1 28.Ke2 Qh5 29.Ke1=) 27...Qh1 (better 27...Rh5 28.d3 ed3 29.Qd3 Ba5 30.Bc3 Rh1 31.Kd2 Qf2 32.Qe2 Bc3 33.Kd3 Qe2 (33...Ba1 34.Qf2 g6 35.Qa2=) 34.Ke2 Ra1-+) 28.Ke2 Qh5 29.Ke1 Rd4! 30.ed4 Qh1 31.Ke2 Qa1 32.d5 (32.Qe4 Qa4 33.Qh7 Qe8 34.Kd3 g6-+) 32...Qe5 33.Qc4 (33.d6 Qd6 34.Qe4 Qe5-+) 33...Qd6 (33...Qh5 34.Ke1 Qh1 35.Ke2 Qf3 36.Ke1-+) 34.d3 (34.Qe4 Qe5 35.f3 f5 36.Qe5 Be5-+) 34...f5 (better 34...ed3!? 35.Kd3 g5 36.Qb5-+) 35.de4 fe4 36.Ke3 (36.Qe4 g6 37.Qe8 Bd8 38.Qe4-+) 36...Qf4 37.Kd4 (37.Ke2-+) 37...e3 38.Kd3 Qc4 39.Kc4 ef2 40.d6 f1Q (40...f1Q 41.Kc5 b6 42.Kd4 Qd1 43.Ke3 Qb3 44.Kf2 Bd6 45.Ke2 h5 46.a5 ba5 47.Kd2 Bf4 48.Ke2 Qe3 49.Kf1 Bg3 50.Kg2 Qf2 51.Kh3 Qh2) 0-1. ClayPigeons (2190) - JinRob (2270), Rated Bullet game, lichess.org, 2021.

5.c4 e4

6.a4 dc4 7.Bc4 0-0 8.Ne2 Bg4 9.0-0 c6 10.h3 Bh5 11.Nbc3 Bc7 12.Qb3 Qd6 (12...Nbd7!?=) 13.Nf4+= g5 14.Ba3 (14.bc6 gf4 15.cb7 fe3 16.g3 ef2 17.Rf2+-) 14...Qe5? (14...c5 15.b6 ab6+= (15...Qb6? 16.Nh5 Nh5 17.Ne4+-)) 15.Bf8 gf4 16.bc6?? (better 16.ef4 Qf4 17.g3 Qd2 18.Be7+-) 16...fe3-/+ (16...Kf8?? A) 17.Qb7?? fe3 18.g3 ef2 19.Rf2 Bb6-+ (19...Qg3 20.Rg2 Bb6 21.Qb6 Qg2 22.Kg2 ab6 23.c7-/+); B) 17.cb7 fe3 18.g3 ef2 19.Rf2 Qg3 20.Rg2 Bb6 21.Qb6 ab6 22.ba8Q Qe5+-; C) 17.ef4 Qf4 18.g3+-) 17.g3 ef2 (17...Kf8?? 18.cb7 ef2 19.Rf2 Qg3 20.Rg2 Bb6 21.Qb6 ab6 22.ba8Q+- (22.ba8B? Qh3 23.Bf1 Qd7-+; 22.ba8R?! Qd6+/-)) 18.Rf2 Qg3?? (18...Bb6 19.Kf1 Nc6-+ (19...Kf8 20.cb7 Qd4 21.Rg2+-; 19...Bf2 20.Bd6 Qf5 21.g4 Ng4 22.hg4 Bg4 23.Bf7 Kh8 24.Nd1 Bh3 25.Ke2 Nc6 26.Be5 Ne5 27.Nf2 Bg4 28.Ng4 Qg4 29.Kf1-+)) 19.Rg2+- Qg2 (19...Bb6 20.Kf1 Qg2 21.Kg2 Nc6+-) 20.Kg2 Bf3 (20...b6 21.Be7 Ne8 22.Nb5 Nc6 23.Rf1+-) 21.Kg1 (better 21.Kf1 Nc6 22.Qb7 Rf8 23.Qc7+-) 21...Kf8 (21...Bb6 22.Kf1 Nc6+-) 22.Qb7 (better 22.cb7 Bb6 23.Kf1 e3+-) 22...e3 (22...Nc6 23.Qa8 Nd8 24.Qa7+-) 23.Qa8 (better 23.Qc7 Bh5 24.Qb7 Kg7 25.Qa8 Nc6 26.Qc6 h6+-) 23...Bc6 (23...ed2 24.Qa7 Ne8 25.Qc5 Bd6 26.Qf5+-) 24.Qa7 Bg3 25.Qe3 (25.Qf7) 1-0. BeepBeepImAJeep (2620) - fmBayrambayram (2205), lichess.org, 2017.

6.a4 Nbd7 7.cd5= Qe7 (7...Nc5 8.Nc3=) 8.Ne2 Ne5 (8...Nd5 9.Bg7 Rg8 10.Bd4=) 9.Ng3+= Bg4 10.Qc2 0-0 11.Ne4 Nd5 12.Nd6 Qd6 (12...cd6 13.Nc3 Nb4 14.Qb1+/-) 13.Be5 (better 13.d4!? Nf3 14.gf3 Bf3 15.Ba3+/-) 13...Qe5+= 14.Nc3 Nb4 15.Qb3 c5 (better 15...Qd6+/-) 16.h3 (better 16.bc6 Nc6 17.Qb7+/-) 16...Be6 17.Bc4? (17.Qd1!?=) 17...Nd3 (better 17...Bc4!? 18.Qc4 Nc2 19.Ke2 Na1 20.Ra1 Rad8-/+) 18.Ke2=+ Rfd8 19.Be6 fe6 20.Qc4 (20.Rhb1 Rac8=+) 20...Rd4 21.Qa2 Rf8 22.Raf1 Rfd8 (22...c4 23.f3=+) 23.Rd1 (23.g3 Nb4 24.Qb2 Rd2 25.Qd2 Rd2 26.Kd2 Qd6 27.Ke2 Qd3 28.Kf3 Qc3-+) 23...Qh5 (23...Rf4 24.f3=+) 24.g4 (24.f3 Qe5=+) 24...Qe5-/+ 25.Qb1 Rf8 26.Rdf1 Nf2?? (better 26...c4 27.Qa2 Rc8=+) 27.Rf2+/- Rd2 28.Kd2 Rf2 29.Kd3 Qd6 (29...c4 30.Kc4 Qe3+-) 30.Kc4+- Rd2? (30...Rf7 31.Rf1 Re7 32.Qd3+-) 31.Qe4 (31.Rd1 Rd1 32.Qd1 Qd1 33.Nd1 b6+-) 31...a6? (31...Kh8 32.Kb3 (32.Qb7?! Qd3 33.Kb3 Qc2 34.Kc4 Qd3 35.Kb3 Qc2 36.Kc4 Qd3=) 32...a6 33.Rf1+-) 32.Rf1 (better 32.Rd1! Rd1 33.Nd1 ab5 34.ab5 Kf8+-) 32...ab5 (32...Qe7 33.ba6 ba6 34.Rd1+-) 33.ab5 h6 (33...Qe7+-) 34.Qb7?? (34.Ra1 Qe7 35.Ra8 Kf7 36.Qf3 Qf6 37.Qb7 Kg6 38.h4 Qf1 39.Kc5+-) 34...Qe5?? (better 34...Qd3 35.Kb3 Qf1-/+) 35.Qf7+- Kh7 36.Qf4 Qf4 37.Rf4 e5 (37...Kg8 38.b6 Rd8 39.Ne4+-) 38.Re4 Rh2 39.Re5 Rh3 40.Rc5 (better 40.b6 Rf3+-) 40...Rg3 (40...Re3 41.b6 Re8 42.Nd5+-) 41.Rd5 (better 41.b6 Rg4 42.Kb5 Rg2+-) 41...Rg4 42.Rd4 h5 (42...Rg2 43.b6 Rb2 44.Nd5 Rc2 45.Kb5+-) 43.b6 (better 43.Rg4 hg4 44.b6+-) 43...h4 (43...Rg6 44.Kc5 Rf6+-) 44.Rg4 h3 45.Rh4 Kg6 46.Rh3 (46.b7 Kf5 47.b8Q Kf6 48.Qd6 Kg5 49.Ne4 Kh4 50.Qf4 Kh5 51.Qg5) 46...Kf5 (46...Kf7 47.Rf3 Ke7 48.b7 Kd6 49.b8Q Kd7 50.Rf7 Ke6 51.Qe8 Kd6 52.Ne4) 47.Rg3 (47.b7 Kf6 48.b8Q Kf7 49.Qd6 g5 50.Rh7 Kg8 51.Qg6 Kf8 52.Qf7) 47...g5 (47...Ke6 48.b7 g6 49.b8Q Kf7 50.Rf3 Ke7 51.Nd5 Kd7 52.Qc7 Ke6 53.Qe7) 48.Rg5! Kg5 49.b7 Kf6 50.b8Q Ke6 (50...Kf7 51.Qf4 Kg6 52.Qg4 Kf6 53.Nd5 Kf7 54.Qg5 Kf8 55.Qe7 Kg8 56.Nf6 Kh8 57.Qf8) 51.Qb6 (51.Qe8 Kf6 52.Ne4 Kg7 53.Qe7 Kg6 54.Qf6 Kh7 55.Ng5 Kg8 56.Qf7 Kh8 57.Qf8) 51...Kf5 (51...Kf7 52.Nd5 Kg7 53.Qf6 Kh7 54.Nf4 Kg8 55.Ne6 Kh7 56.Qg7) 52.Qd4 (52.Qd6 Kg5 53.Ne4 Kf5 54.Qf6 Kg4 55.Qf4 Kh5 56.Qg5) 52...Kg5 (52...Ke6 53.Qf4 Ke7 54.Nd5 Ke6 55.Qf6 Kd7 56.Qe7 Kc6 57.Qc7) 53.Qd5 (53.Ne4 Kg4 54.Qg7 Kf3 55.Qg3 Ke2 56.Qf2 Kd1 57.Qd2) 53...Kh6 (53...Kg4 54.Qe5 Kf3 55.Qf4 Kg2 56.Ne4 Kh1 57.Qf3 Kh2 58.Qf2 Kh3 59.Qg3) 54.Qe4 (54.Qg8 Kh5 55.Ne4 Kh6 56.Qg5 Kh7 57.Nf6 Kh8 58.Qh6) 54...Kg7 (54...Kg5 55.Qc6 Kf5 56.Ne4 Kg4 57.Qg6 Kf3 58.Qg3 Ke2 59.Qf2 Kd1 60.Qd2) 55.Qf4 (55.Qe7 Kg6 56.Ne4 Kf5 57.Qf7 Kg4 58.Qf4 Kh5 59.Qg5) 55...Kh7 (55...Kg6 56.Ne4 Kg7 57.Qf6 Kg8 58.Nd6 Kh7 59.Nf5 Kg8 60.Qg7) 56.Qg3 (56.Qg3 Kh6 57.Ne4 Kh7 58.Qh4 Kg7 59.Qe7 Kg6 60.Qf6 Kh7 61.Ng5 Kg8 62.Qf7 Kh8 63.Qf8; 56.Qg5 Kh8 57.Ne4 Kh7 58.Nf6 Kh8 59.Qh6) 1-0. BeepBeepImAJeep (2715) - Sick_clown (2665), lichess.org, 2020.

6.d4 c6 7.a4 (7.c5 Bc7=+) 7...0-0 8.Qb3 Be6 9.Nc3 (9.c5 Bc7=+) 9...Nbd7 10.Nh3 (10.c5 Bc7=+) 10...Bh3-/+ 11.gh3 Qe7 (11...dc4 12.Bc4 Rc8 13.a5-/+) 12.Be2 (12.cd5 cb5 13.Nb5 Rfb8=) 12...a5 (better 12...dc4!? 13.Bc4 Nb6-/+) 13.cd5= cd5 14.Nd5 Qe6 (14...Nd5 15.Qd5 Nb6 16.Qb3=) 15.Bc4 (15.Nf6 Qf6 16.Qd5 Bb4 17.Kf1 Nc5 18.dc5 Qb2+=) 15...Nd5 (15...Qh3 16.Ba3 Ba3 17.Qa3=+) 16.Bd5 Qh6?? (better 16...Bb4 17.Ke2 Qf5-/+) 17.Be4 Qh3 (17...Rfb8 18.Bf5 Nb6 19.e4+/-) 18.Ke2 (18.Bb7 Ra7 19.Qd5 Bb4 20.Ke2 Nb6+-) 18...Rac8 (18...Rab8 19.Qd5 Nf6 20.Qf5+/- (worse 20.Qd6 Ne4 21.Qf4 Qe6+=)) 19.Rag1 b6 (19...Nb6+/-) 20.d5 (better 20.Qd5 Qh6 21.Qg5 Qg5 22.Rg5+-) 20...Nf6?? (20...f6 21.Bd4+=) 21.Bf3 (better 21.Bf6 g6+-) 21...Rfe8?? (21...Qf5 22.Rc1 Be5 23.Rc6+/-) 22.Qd3 (better 22.Bf6 Bf8 23.Rg3+-) 22...Qh6 (22...Nh5 23.Bh5 Qh5 24.f3+=) 23.Rg2 (23.Qf5 Be7 24.Rg3 Qh4+-) 23...Be5 (better 23...Qf4 24.Bd4 Bc5+/-) 24.Rhg1?? (24.Be5 Re5 25.Rhg1 g6+/-) 24...g6?? (24...Bb2 25.Rg7 Qg7 26.Rg7 Kg7-/+) 25.Be5+/- Re5 26.Qd4 Nd7 27.d6 (27.Rd1 Qf8+-) 27...Qg7? (better 27...Rc2!? 28.Kd3 Ra2=) 28.Bc6+- Nc5 29.f4 (29.d7 Rd8+-) 29...Re6+/- 30.Kf3 (30.d7!? Rd8 31.Rd1+/-) 30...Rd8+= 31.Qg7 (31.d7!?+=) 31...Kg7= 32.f5 (32.d7 Nd7 33.Bd7 Rd7=) 32...Rf6 33.e4 Ne4?? (33...Rfd6 34.Ra1 Rd3 35.Kf4 R8d4-/+) 34.Ke4 (better 34.Be4 Rfd6 35.Rc1 Kf6+-) 34...Rf5? (34...Rfd6 35.Rg4+-) 35.Rg5 (better 35.d7 f6 36.Kd4+-) 35...Rd6?? (better 35...Rg5 36.Rg5 Rd6+-) 36.Rf5 Re6 (36...Rd2 37.Bd5 f6 38.h3+-) 37.Re5 Kf6 (37...Rf6 38.Re7 Rf2 39.Rb7+-) 38.Re6 (38.Rf1!? Ke7 39.Rf7 Kf7+-) 38...fe6 39.Kd4 Ke7 (39...g5 40.Rf1 Kg6 41.Be4 Kh5 42.Rf6+-) 40.Re1 (40.Ke5 Kf7 41.Rf1 Kg7 42.Ke6 Kh8 43.Kf7 g5 44.Re1 h5 45.Kg6 Kg8 46.Re8) 40...Kd6 41.Re5 Kc7 (41...g5 42.Rg5 e5 43.Re5+-) 42.Ke4 (42.Re6 h6 43.Kd5 Kd8 44.Kd6 g5 45.Re8) 42...Kd6+- 43.Kf4 Ke7 44.Kg5 h6 (44...Kd6 45.Kf6 Kc7 46.Re6 h6 47.Ke5 g5 48.Re7 Kb8 49.Kd6 g4 50.Re8 Ka7 51.Ra8) 45.Kg4 (45.Kg6 h5 46.Rh5 e5 47.Re5 Kd6 48.Rd5 Ke6 49.h3 Ke7 50.Kf5 Kf7 51.Rd7 Kf8 52.Kf6 Kg8 53.Be4 Kf8 54.Rd8) 45...Kf6 (45...Kd6 46.Re3 g5+-) 46.Kg3 (46.Kf4 Ke7+-) 46...h5?? (46...Ke5 47.Kg4+/-) 47.Kf3 (better 47.Kf4+-) 47...Ke5 48.Ke3 Kf6 (48...g5 49.Kf3 Kd6 50.Be8+-) 49.Ke4 e5? (better 49...h4+-) 50.Kd5 Kf5 (50...Kf5 51.Be8 g5 52.Bh5 Kf4+-). ClayPigeons (2160) - blitztraining (2125), Rated Bullet game, lichess.org, 2021.

6.cd5 0-0 7.Nc3 Nbd7 8.d4 (8.d3!?+=) 8...h6 (8...Nb6!?+=) 9.Qc2= Re8 (9...Bb4 10.Nge2=) 10.Nge2 Nb6 11.Ng3 Will e4 fall? 11...Bg4 12.Nge4?? (better is 12.h3 Bg3 13.hg4=) 12...Ne4–+ 13.Ne4 Qe7?? (better is 13...Re4 14.Bd3 Re8–+) 14.Nd6 (14.Nc3 Qh4 15.Bc1 Bb4=) 14...cd6 15.Bd3 (15.h3 Bh5 16.Qb3+/–) 15...Rec8 (15...Nd5 16.h3 Bd7=) 16.Qd2 (16.Qb3 Qg5+–) 16...Nc4 17.Bc4 Rc4 18.Rc1 (18.Qd3 Rac8 19.0-0 Qg5+/–) 18...Rac8 (18...Rc1 19.Bc1 Bd7 20.a4+/–) 19.Rc4 Rc4 20.0-0 (20.Qd3!? Qc7 21.0-0 Rc2+/–) 20...Qg5 21.f3 Bd7 22.Rc1 (22.b6 ab6 23.Rc1 b5+/–) 22...Bb5+= 23.Rc4 (23.Bc3 Qd5 24.e4 Qc6+=) 23...Bc4= 24.Qc3 b5 (24...Bd5 25.h4 Qd8 26.e4 Ba2 27.d5+=) 25.a4 (25.e4 Ba2 26.Ba3 Qd8+=) 25...a6 (25...Qd5 26.e4 Qb7 27.d5+=) 26.ab5 (26.e4 f5+/–) 26...ab5 27.e4 f6 (27...f5 28.h3+=) 28.Bc1+/– Qg6 (better is 28...Qh5+/–) 29.Qb4 (better is 29.Qc2!?+/–) 29...f5= 30.Qa5? (better is 30.Qe1=) 30...fe4–+ 31.Qd8 (31.Qe1 Bd5 32.fe4 Be4–+ (32...Qe4?! 33.Qe4 Be4 34.Ba3–/+)) 31...Kh7 32.f4? (32.Qf8–+) 32...e3 (32...Bd5?! 33.Be3–+) 33.Be3 Qb1 34.Kf2 Qf1 (better is 34...Qc2 35.Kg3 Bf1 36.f5 Qg2 37.Kf4 Be2 38.Qh8 Kh8 39.f6 Qf3) 35.Kg3 Qe1 (worse is 35...Bd5 36.Kh4 Qe1 37.g3 Qe3 38.Qd7–+) 36.Bf2 Qe4 37.Qd6 (37.Qd7 Bd5 38.Kg4 Qg2 39.Bg3 Qe2 40.Kh4–+) 37...Bd5 (37...Bd5 38.Kh4 g5 39.Kg4 Be6 40.Qe6 Qe6 41.Kf3 b4–+) 0–1. GuestJWPN – herculanum, freechess.org, 2018.

6.cd5 Nd5 7.Bg7 Rg8 8.Bb2 Nd7 9.Nc3+= Be5 (9...Nc3 10.Bc3 Nc5 11.Qh5+=) 10.Qb3 (better is 10.Nd5 Bb2 11.Qc2 Ba1 12.Nc7 Kf8 13.Na8+–) 10...Qf6?? (better is 10...Nc3 11.Bc3 Nc5=) 11.Nd5 (11.Qd5 Qg6+–) 11...Nc5 (11...Qd6 12.Rc1 c6 13.bc6 bc6+–) 12.Nf6 (12.Nf6 Bf6 13.Qc2 Nd3 14.Bd3 ed3 15.Qb1 Bb2 16.Qb2+–) 1–0. GuestYMWK – GuestHUUS, freechess.org, 2017.

6.cd5 Nd5 7.Bg7 Rg8 8.Bb2 Bg4 9.Qa4 Bf5 10.Nc3 Nc3 11.dc3=.

6.cd5= Nd5 7.Bg7 Rg8 8.Bb2 Qh4 9.g3?? (better is 9.Nc3 Nb4 10.Qb1 Nd3 11.Bd3 ed3 12.Qd3 Rg2 13.Qe4 Qe4 14.Ne4+/–) 9...Bg3!–/+ 10.fg3?? (10.fg3 Rg3; 10.hg3 Qh1 Pinning (10...Qh1 Deflection)) 10...Rg3!–+ 11.hg3 (11.hg3 Qg3 Mate attack) 11...Qg3 12.Ke2 Bg4 0–1. Watkins,Roosevelt – Wall,Bill, Dayton, OH, 1982.

5.c4 Be6

6.Qb3 Nbd7 7.d4 c6 8.c5? Bc7 9.Nf3 e4 10.Nfd2 Ng4 11.h4 (11.h3 Nf2 (11...Qh4 12.hg4 Qh1 13.bc6 bc6 14.Qb7 Rb8 15.Qc7 Rb2 16.Qc8) 12.Kf2 Qh4 13.Ke2 (13.Kg1!? Bg3 14.Rh2)) 11...Qf6 12.f4 Bf4! (12...ef3 13.gf3 Bg3 14.Ke2 Nf2 15.Rg1 Bh4 16.Nc3 Bf5 17.e4 de4 18.Nce4 Ne4 19.fe4) 13.ef4 Qf4 14.Rh3 Qf2 15.Kd1 e3 16.Rf3 Qh4 17.Re3 Ne3 18.Qe3 0-0 19.Nf3 Bg4 20.Be2? (20.Nbd2 Rfe8 21.Qf4) 20...Qg3 21.Qg1 Rfe8 22.Nc3 Re6 0–1. Klarius – Felbecker, 1979.

6.Qc2 Nbd7 7.d4 0-0 (7...Bb4!? 8.Bc3 Bc3 9.Nc3 ed4 10.cd5 Nd5 11.Nd5 Bd5=+) 8.c5= Be7 9.de5 (9.c6!? Bb4 10.Kd1 bc6 11.bc6=+) 9...Ne4=+ 10.c6 Bb4 11.Kd1 bc6 12.bc6 (12.a3 Qh4 13.Nf3 Bg4 (< 13...Nf2 14.Kc1 Qh6 15.Qf2+=) 14.ab4 Bf3 15.Ke1 Bd1=) 12...Nb6 (12...Qh4!? 13.Nf3 A) 13...Nf2 14.Kc1 Bf5 15.Qf5+/– (15.cd7?! Bc2 16.Nh4 Bb1=); B) 13...Bg4–/+) 13.a3 Ba5 (13...Bd2 14.Ke2 Ba5=+) 14.Nf3 (14.Bd3 Qh4 15.Be4 de4–/+) 14...Nc4 (14...Bf5 15.Bd3 Nf2 16.Qf2 Bd3 17.Bc3 Bc3 18.Nc3–+) 15.Bd4 (better is 15.Bc4 dc4 16.Nd4=+) 15...Rb8?? (better is 15...Bf5 16.Qe2 Qb8–/+) 16.Bc4+– Bf5 17.Bd3 Nf2 18.Qf2 Bd3 19.Nbd2 Rb5 (19...a6 20.Qh4+–) 20.a4 Rb8 21.Ra3 (21.Ba7 Rb2+–) 21...Qe7?? (21...Be4+–) 22.Rd3 (22...Bd2 23.Nd2+– (23.Qd2?! Rb1 24.Ke2 Rh1+–)) 1–0. Sternik,Ryszard – Stankiewicz, Olsztyn, 1972.

6.Qc2 Nbd7 7.Nf3 Rc8 8.d3 (8.d4 e4 9.Ng5 Bf5=+) 8...0-0 9.d4 e4 10.Ng5 Bb4 11.Nc3 c5 12.a3 (12.bc6 Rc6 (12...dc4? 13.Ne6 fe6 14.cd7 Qd7 15.Be2+-; 12...bc6?! 13.Ne6 fe6 14.Be2=+) 13.Qb3 Rb6=+) 12...Ba5-/+ 13.Ne6 fe6 14.Be2 Nb6 15.Qb3 (15.dc5 Rc5 (15...Nc4?! 16.Bc4 dc4 17.Rd1=+) 16.0-0 Nc4-+) 15...dc4 (better 15...cd4 16.ed4 Nc4 17.Bc4 Rc4-+) 16.Bc4? (better 16.Qc2 cd4 17.ed4 Qd4 18.0-0-+) 16...Nc4 17.Qc4 Nd5 (better 17...cd4!? 18.Qe6 Kh8 19.ed4 Bc3 20.Bc3 Rc3 21.0-0-+) 18.dc5 Qf6 19.0-0 Bc3 (19...Nc3?! 20.Rac1 Qf5 21.Bc3 Rc5 22.Qd4 Bc3 23.Rc3=+) 20.Bc3 Nc3 (20...Qc3!? 21.Rfc1 Qd3 22.Ra2-+) 21.Rac1-/+ Nd5 22.Qe4 Rc7 23.Rc2 Rfc8 24.Rfc1? (better 24.Qd4-/+) 24...Rc5!!-+ 25.g3 (25.Rc5 Rc5 Combination) 25...Rc2 (25...Nc3 26.Qb7 Ne2 27.Kf1 Rc2 28.Qc8 Rc8 29.Rc8 Kf7 30.Ke2 Qb2 31.Kf3 Qa3 32.Rc7 Kg6 33.h4-+) 26.Rc2 Rc2 27.Qc2 Qa1 28.Kg2 Qa3 29.Qc8 Kf7 30.Qb7 (30.e4 Qd6 31.ed5 Qd5 32.f3 Qb5 33.Qc7 Kg6-+) 30...Qe7 31.Qc6 Qc7 32.Qa6 (32.Qa8 Qb6-+) 32...Qb6 (32...Nc3 33.f4-+) 33.Qa4 (33.Qa3 Nc7-+) 33...Nc3 (33...Nc7 34.Qh4-+) 34.Qf4 (34.Qc2 Qc5-+) 34...Kg8 35.Qc4 Nb5 36.Qc8 Kf7 37.Qd7 Kf6 38.g4 h6 39.Qe8 (39.h4 a6-+) 39...Qb7 40.Kg3 Nd6 41.Qf8 Nf7 42.h4 Kg6 (42...Qe4!? 43.h5-+) 43.f4 a5 44.Qc5 Qe4 45.Qh5 (45.Kf2 e5 46.Qb6 Kh7 47.Qa5 h5-+) 45...Kf6 46.Qc5 a4 47.Kf2 Qd3 48.g5 hg5 49.hg5 Kg6 50.Qc6 Qf5 (50...Nd6 51.Qa4 Ne4 52.Kf3 Nd2 53.Kg3 Qe3 54.Kg2 Qf3 55.Kh2-+) 51.Kg3 Ng5! (51...Ng5 52.Qe8 Nf7 53.Qa4 Nd6-+) 0-1. Dolejs,Dan - Hignett,Alan, NZL NZCCA TT Class, 1994.

6.c5 Bc5–/+ 7.Be5 Nbd7 8.Bb2 0-0 9.Nf3 Qe7 (9...a6 10.ba6 ba6 11.Be2=+) 10.Be2 Nb6 (10...a6 11.ba6 ba6 12.Qc2=+) 11.Qc2= h6 (11...Bd6 12.Ng5 g6 13.Ne6 fe6 14.a4=) 12.d3 (12.0-0 Nc4=) 12...Bf5 (12...a6 13.ba6 Ra6 14.d4 Bb4 15.Bc3=) 13.Nbd2 (13.Bd4 Bd6=) 13...Rfe8 (13...a6 14.Rb1=) 14.Nd4 (14.0-0 Bd6=) 14...Rad8?? (better is 14...Bg6=) 15.Nf5+– (15...Qe6 16.Qc5 Qf5 17.Qc7+–) 1–0. Sternik,Ryszard – Tomalak,S, corr Goleniow, 1993.

6.c5 Bc5 7.Be5 Nbd7 8.Bb2 0-0 9.Nf3 Qe7 10.Be2 Bg4 11.0-0 Bd6 12.d4 a6 13.Nc3 Bf3 14.Bf3 ab5 15.Nb5 (< 15.Nd5 Nd5 16.Bd5 Bh2 17.Kh2 Qd6 18.Kg1 Qd5–/+) 15...Ne4 16.a4 Rfe8 17.Nd6 Qd6 18.a5 Ndf6 19.Qc2 Qb4 (19...c6 20.Ba3 Qe6 21.Bb4+=) 20.Ra4 Qd6 21.Rc1 Rec8 22.Ra2 Qd8 23.Rca1 Qe7 (23...c5 24.dc5 Rc5 25.Qb3+=) 24.a6 (24.Be2 Re8 25.Ba3 Qd7+=) 24...ba6= 25.Ra6 Ra6 26.Ra6 Qb4 27.Ra1 g6 28.Be2 Rb8 29.Ba3 Qc3 30.Qc3 Nc3 31.Bd3 Ra8 32.Bb2 Ra1 33.Ba1 Na2 34.Bb1 Nc1 35.f3 Kf8 36.Bb2 Nb3 37.Bc3 (37...Nc1 38.Bb4 Ke8 39.Bc2+–) 1–0. Dopper,Johan (2175) – Geus,Jan (2200), KE03 NBC Email, 2000.

6.cd5 Nd5 7.Nf3.

6.Nf3 0-0 7.Ne5 Qc8 (7...Be5 8.Be5 dc4 9.Na3=) 8.d4 Nbd7 9.c5 Be5 10.de5 Ne5?? (better is 10...Ng4+/–) 11.Be5+– Ne4 12.Bb2 Nc5 (12...f5+–) 13.Qd4 f6 14.Qc5 Rd8 15.Nc3 c6 16.bc6 bc6 17.Ne2 1–0. Taulien,Hans_Juergen – Neffgen,Dieter, remoteschach.de, 2003.

6.Nf3 Nbd7 7.cd5 Nd5 8.Nc3 0-0 (8...Nc3 9.Bc3 Bd5 10.Be2+=) 9.d4 (9.Ne4 h6+=) 9...Nc3 (9...Bb4 10.Qc2 Bf5 11.Qf5 Nc3 12.a3–+) 10.Bc3 ed4 (10...e4 11.Nd2 Bd5 12.Bc4 Bc4 13.Nc4+=) 11.Nd4 (11.Qd4 Qf6=) 11...Be5 (11...Qf6 12.Qc2=) 12.f4= Bd4 (12...Bf6 13.Bd3=) 13.Qd4 (13.Bd4 Nb6+=) 13...Nf6 14.Be2 Qd4 (14...Qc8 15.0-0 Rd8 16.Qa4=) 15.Bd4+= (worse is 15.ed4 Rfe8 16.0-0 Bd5+=) 15...Bd5 (15...Rfd8 16.0-0+=) 16.0-0 (16.Rc1 c6+= (16...Bg2?? 17.Rg1+–)) 16...Ne4 (16...Be4+=) 17.Rf3 (17.Rfc1 c6+=) 17...Nd2 (17...c6 18.bc6 bc6 19.Rff1=) 18.Rg3 (18.Rh3 Rad8+=) 18...f6 19.Rc1 Rf7 (19...Ne4 20.Bf3 (worse is 20.Rc7 Ng3 21.hg3 Rac8–/+) 20...Rf7 21.Rh3=) 20.Rc5 (better is 20.Rc2 Ne4 21.Rh3=) 20...Ne4?? (better is 20...Rd8 21.Rc2 Ne4=) 21.Bc4 (better is 21.Rd5 c6 22.bc6 bc6 23.Ra5 Ng3 24.hg3+–) 21...Bc4–+ 22.Rc4 Ng3 23.hg3 b6 (23...a6 24.ba6 Ra6 25.a4–+) 24.e4 (24.Kf2 Rd7–+) 24...Rd8 25.e5 (25.g4 Re7 26.e5 fe5 27.Be5 Rd1 28.Kh2 Rd5–+) 25...Rfd7 (25...Rd5 26.ef6 Rfd7 27.Be5 gf6 28.Bf6 Rb5 29.Kf2–+) 26.Bc3 Rd3 (better is 26...fe5 27.Be5 Kf7–+) 27.Kh2?? (27.ef6!? gf6 28.Bf6–/+) 27...fe5 (better is 27...R8d5 28.Rc7 Rc5 29.Rc5 bc5–+) 28.Be5 Ra3 (better is 28...R3d7!?–+) 29.Rc7+= Rdd3 (29...g6!?+=) 30.Rg7= Kf8 31.Rh7 Rg3? (better is 31...Ra2 32.g4 Rdd2=) 32.Bd6+– Kg8 33.Ba3 Rg2?? (better is 33...Ra3 34.Rc7 Ra2+–) 34.Kg2+– Kh7 35.Kg3 Kg6 36.Bb4 Kf5 37.a4 Ke6 (37...Ke6 38.Kg4 Kd5+–). Andersson,Egart – Kuniss, Denmark, 1995.

6.Nf3 Nbd7 7.Be2 b6 (7...dc4!? 8.Qc2 a6 9.Bc4 Bc4 10.Qc4 ab5 11.Qb5 e4 12.Bf6 Qf6–/+ (12...gf6?! 13.Nh4+=)) 8.d4 e4 9.Ne5 Be5? (better 9...a6=) 10.de5+– Ng8 11.cd5 Bf5 12.e6! Nc5 (12...fe6 13.Bg7) 13.Bg7 Nf6 (13...fe6 14.Bh8 ed5 15.Nc3+–) 14.Bh8 fe6 15.de6 Qd1 16.Bd1 Nd3 (16...Nd5 17.Bd4 Ne6 18.Nc3+–) 17.Ke2 Nd5 18.Bb3 Be6 19.Nd2 Bg4 (19...Nc5+–) 20.f3 Nc3 (20...ef3 21.gf3 N5f4 22.ef4+–) 21.Bc3 0-0-0 22.fg4 (22.fg4 Nc5 23.Bc2+–) 1–0. GuestYDSJ – GuestVXMM, freechess.org, 2020.

6.Nf3 e4 7.Nd4 Bg4 8.Be2 h5! Sternik.

5.c4 Qe7

6.d4 Bb4 7.Nc3=+.

6.d4 ed4 7.Bd4 Bb4 (7...Bg4 8.f3 Bb4 9.Nd2–+) 8.Bc3 (8.Nc3 Bg4 9.Qd3 Be6 10.cd5 Bd5=) 8...dc4 (8...Ne4 9.Qb3 Qf6 10.Ne2 Bc3 11.Nbc3 Qf2 12.Kd1–+) 9.Qa4 (9.Bc4 0-0=+) 9...Nd5 10.Ne2 (10.b6!? Nc6 11.Bb4=+) 10...Nd7 (better is 10...0-0–/+) 11.a3? (better is 11.Bb4 Nb4 12.Nf4–/+) 11...Nc5–+ (11...Nc3 12.Nbc3 Nc5 13.Qc2 Nd3 14.Kd2 Nf2 15.Rg1 Ba3 16.Nd5 Bb4 17.Nec3–+) 12.Bb4 Nb4 (13.ab4 Na4 14.Ra4 0-0–+) 0–1. Sidorov – Teichmann,C, corr ICCF, 1995.

6.cd5 Nd5 7.Qb3 Nf6 8.Nc3 0-0 9.Bc4 a6 10.Nge2 ab5 11.Nb5 Nc6 12.Nd6 Qd6 13.Bc3 Na5 14.Ba5 Ra5 15.f3 c6 16.a4 b5! 17.Qc3 (17.ab5 Ra1 Pinning (17...Ra1 Deflection; 17...Ra1 Decoy)) 0–1. Silent Move (2115) – FrankensteinDracula (2085), redhotpawn.com, 2014.

6.cd5 Nd5 7.Nc3 Nb6 8.a4 a5 9.Be2 N8d7 10.d3 0-0 11.Bf3 Nc5 12.Nge2 Bf5 13.Nc1 Rad8 14.Qc2 Bg6 15.0-0 f5 16.Nd5 Nd5 17.Bd5 Kh8 18.Qc3 (18.d4 ed4 19.ed4 f4+=) 18...e4 (18...f4 A) 19.Qa5? fe3 (19...Bd3?! 20.Nd3 Nd3 21.Qc3 Nb2 22.Qb2+=) 20.f3 Bd3–+; B) 19.ef4 Rf4 20.Bc4+=) 19.Bc4 (19.d4!? Nd3 20.Nd3 ed3 21.Bb7+/–) 19...ed3 20.Nd3 Ne4 (20...Nd3 21.Bd3 (21.Qd3?? Bh2 22.Kh2 Rd3 23.Bd3 Qd6 24.Kg1 Qd3–+) 21...Rd7 22.Rfd1= (worse is 22.Qa5 Bb4 23.Qa7 Rd3–/+)) 21.Qc2 (21.Qa5 Qh4 22.g3 Qe7+=) 21...f4 22.ef4 (worse is 22.Nf4 Bf4 23.ef4 Nd2+=) 22...Bf4 23.Nf4 Rf4 24.Qe2 (24.Bd3 Qd6 25.Be4 Be4= (worse is 25...Re4 26.Qc3 Re7 27.Qa5+/–)) 24...Rd2+= 25.Ba3 (better is 25.Qe3 Rff2 26.Rf2 Rf2 27.Bd4+=) 25...Qa3?? (better is 25...Qg5 26.Qe3 Rg4–/+) 26.Ra3+– Re2 27.Be2 h6 28.Bd3 Kh7 29.g3 (29.Rc1!? Nd6 30.Bg6 Kg6 31.Rc7 Kf6+–) 29...Rf3 30.Re1 Nd2 (30...c5 31.bc6 (31.Be4?! Ra3 32.Bb7 Ra4=; 31.Re4?! Rd3 32.Rd3 Be4+–) 31...bc6 32.Re3 (32.Be4?! Ra3 33.Bc6 Rc3+/–) 32...Re3 33.fe3+–) 31.Bg6 Kg6 32.Rae3 Rf6 33.Kg2 Nc4 (33...c6 34.bc6 bc6 35.Rc1+–) 34.Re7 Nb2 35.Rc7 Na4 36.Rb7 Nc3 (36...Nc5 37.Ra7+–) 37.Rc7 (better is 37.Ree7 Kf5+–) 37...Nb5 38.Rb7 (38.Rc5 Nd4 39.Ra5 Rd6+–) 38...Nc3 39.Ree7 a4 40.g4 (40.Rg7 Kf5+–) 40...Kg5? (40...Rd6+–) 41.Rg7 Kf4 42.Rb4 (better is 42.Rgc7!? Nd5 43.Rc4 Ke5 44.Ra4 Nf4 45.Kf3 Ne6 46.Ke3 Nc5+–) 42...Ke5 43.Rc7 Nd5 44.Rb5 (44.Rc5 Kd6 45.Rbc4 Nb6+–) 44...Rf4 45.Kg3 Rd4 46.Ra7 Ke4 47.f3 Kd3 48.Rd5! Rd5 49.Ra4 1–0. Del Corral,A – Fabre,JM, Pena San Jose, 1997.

6.cd5=+ Nd5 7.Nc3 Be6 8.d4=+.

6.cd5 Nd5 7.Nc3 Nf6 8.Bc4 Nbd7 9.Nge2 0-0 10.Qc2 Nb6 11.Bd3 Be6 12.Ne4 Nbd5 13.Nf6 Nf6 (worse is 13...Qf6 14.Bh7 Kh8 15.Be4+=) 14.0-0 Rfd8 15.f4 Bg4 16.Ng3 White plans f5 16...g6 (better is 16...ef4!? 17.Bf6 Qf6=) 17.f5 Ba3 18.Bc3 Nd5 19.h3 (19.Bc4 c6 20.bc6 bc6 21.Qe4 Bf5 22.Nf5 gf5 23.Rf5+/– (23.Qe5?! Qe5 24.Be5 f4+/–)) 19...Nc3= 20.dc3 Qg5 21.Bc4 Bh3 22.fg6 Qg3 (22...Qg3 23.Rf7 Qe3 24.Kh2 Be6 25.Be6 Qh6 26.Kg3 Qg5 27.Kf3 Rf8 28.Rf8 Kf8 29.gh7 Kg7+/–) 0–1. Rynberg,A (1835) – Davidson,Jamie P, CCLA K.O. Tourn. Quarter Final Pair, 1995.

6.Nf3 0-0 7.cd5 Nd5 8.Bc4 Nb6–/+ 9.Be2 a6 10.a4 ab5–/+ 11.ab5 Ra1 12.Ba1 c5 13.0-0 N8d7 14.d3 Nf6 15.Nbd2 Bd7 16.d4 cd4=+ 17.ed4 e4 18.Ne5 Bf5 19.Ndc4= Nbd5 20.Nd6 Qd6 21.Qb3 Be6 22.Bc4 Ng4?? 23.Ng4+– (23...Rc8 24.h3+–) 1–0. Whiteside,T Martyn – Harding,T, BPCF grand open, 1984.

6.Nf3 Nbd7 7.Be2 (7.cd5 Nd5 8.e4 Nf4+=) 7...dc4 8.Bc4 e4 9.Nd4 Ne5 10.Be2 0-0 11.f4 (11.Qc2 Bd7+=) 11...ef3 12.Nf3 Nfg4 13.g3? (better is 13.Nc3–/+) 13...Nf3–+ 14.Bf3 Nh2! 15.Rh2 (15.Qe2 Nf3 16.Qf3 Qg5–+) 15...Bg3 16.Rf2 Qh4 (16...Bf2?! 17.Kf2 Qh4 18.Kf1 Bh3 19.Ke2 Qc4 20.d3 Qb5 21.Qb3 Qb3 22.ab3+=) 17.Qe2 Qh2 (17...Bf2?! 18.Qf2 Qf2 19.Kf2=) 18.Nc3 Qg1 (18...Qf2 19.Qf2 Bf2 20.Kf2+=) 19.Qf1 Bf2 (worse is 19...Qf2 20.Qf2 Bf2 21.Kf2+=) 20.Ke2 Qf1 21.Rf1 Bh4 22.Nd5 Bd7 23.a4 Bd8 24.Rg1 g6 25.Bf6 c6 26.Ne7 Be7 27.Be7 Rfe8 28.Bc5 cb5 29.Bb7 Rab8 30.Bd5 ba4 31.Ba7 Bb5 32.Kf2 Rbd8 33.e4 Rc8 34.Ke3 Bc6 35.Bc6 Rc6 36.d4 Rc3 37.Kf4 f6 38.e5 fe5 39.de5 Rc4 40.Ke3 Re5 41.Kd3 Rc7 (41...Rc7 42.Bd4 Ra5–+) 0–1. Onoprienko,Elena (2060) – Zakharchenko,Arnold (2260), 14th Chigorin Mem B RUS, 2006.

5.d3 0-0

6.Nd2 Bf5 (6...Be6 7.Ngf3 Nbd7 8.Be2 a6 9.ba6 ba6 10.Rb1 d4=+; 6...Re8 7.Ngf3 Bg4 8.h3 Bf5 9.g4 Bg6 10.Nh4 c6=+; 6...Nbd7 7.Ngf3 a6 8.ba6 ba6 9.Be2 Rb8 10.Rb1 c5=+) 7.g3 (7.Ngf3 Re8 (7...Nbd7–/+ 8.Be2 a6 9.a4 c6 10.bc6 bc6=+) 8.c4 d4 9.Be2 de3 10.fe3 Ng4–/+; 7.c4 a6 8.ba6 Na6 9.cd5 Nb4 10.e4 Bg4=) 7...Qd7 (7...a6 A) 8.Qf3 Bg4 9.Qg2 ab5 10.Be2 (10.d4 ed4 11.Bd4–+) 10...Be2–+; B) 8.Ngf3 Re8 9.a4 Nbd7 10.Bg2 Nb6–/+) 8.a4 (8.Ngf3 Qe6 9.c4 dc4 10.Nc4 Bb4=+) 8...a6 (8...Re8 9.Ngf3 c6 10.d4 e4–/+) 9.c4 (9.Ngf3 Re8 10.d4 e4–/+) 9...dc4 10.dc4 Bb4 11.Ba3 Ba5 (better is 11...Ba3 12.Ra3 ab5 13.cb5 Qe7–/+) 12.Bf8+= Ne4 13.Ra2 (13.Ngf3!? Kf8 14.Bg2+=) 13...Nd2 14.Rd2 Kf8 15.Nf3 ab5 16.ab5 Be4 17.Bg2 Qd3 (18.h3 Bd2 19.Nd2 Bg2–+) 0–1. Jaegerflod,Kent – Knoppert,Erik GJ, Sixth Regency Masters, 1984.

6.d4 e4 (6...Nbd7 7.c4 c6 8.c5 Bc7 9.Nd2 Qe7 10.Rc1 Ba5=+; 6...ed4 7.Qd4 c5 8.Qh4 Ne4 9.Qd8 Rd8 10.Nc3 Be5=+) 7.Ba3 Ba3 8.Na3 c5 9.Qd2 cd4 10.ed4 e3 –/+.

6.Be2 c6 (6...Nbd7 7.Nf3 c6 8.bc6 bc6 9.Nc3 Rb8 10.Rb1 Nb6=+; 6...Re8 7.d4 Nbd7 8.de5 Be5 9.Be5 Ne5 10.Nf3 Nf3=+; 6...Qe7 7.Nf3 Bd7 8.c4 Rd8 9.d4 ed4 10.Nd4 dc4–/+; 6...a6 7.Nf3 Re8 8.Nc3 Bd7 9.ba6 Na6 10.0-0 Qe7–/+) 7.Nf3 Re8 8.a4 a6 9.d4 e4 10.Ne5 Nbd7 –/+.

6.Nf3 Nbd7 7.Be2 c6 8.c4 Qc7 (8...dc4 9.dc4 Qc7–/+) 9.g3? (9.cd5 cd5 10.Nbd2 Re8+=) 9...a6 (9...dc4 10.dc4 e4 11.Nd4–/+) 10.a4 (10.bc6 bc6 11.cd5 cd5–/+) 10...ab5 (10...e4 11.de4 de4 12.Nfd2–+) 11.ab5–/+ Ra1 12.Ba1 Re8 (12...dc4!? 13.dc4 cb5–/+) 13.0-0 (13.bc6 bc6 14.cd5 cd5+=) 13...c5 (13...dc4 14.bc6 Qc6 15.dc4+=) 14.Nbd2+= b6 (14...Nb6 15.Bb2=) 15.Re1 (15.cd5 Nd5 16.Nc4 N7f6+=) 15...Bb7 (15...e4 16.Nh4 Ne5 17.Be5 Be5 18.cd5 ed3 19.Bd3 Nd5 20.Nhf3+=) 16.Bf1 (16.cd5!? Nd5 17.Qb3=) 16...d4 (16...e4 17.Nh4–/+) 17.ed4 (17.Ng5 Be7+=) 17...ed4 (17...cd4!? 18.Bg2 Ra8–/+) 18.Re8= Ne8 19.Qe2 (19.Ne4 Be7=) 19...Nef6 20.Bb2 h6 21.Bc1 (21.Bh3 g6=) 21...Ne5 (21...g5 22.Bg2+=) 22.Ne5= Be5 23.Nf3 (23.Bh3 Bd6=) 23...Bd6 24.Nh4 (24.Bh3 g5 25.Nd2 Kg7=) 24...Qd7 (24...Bc8 25.Qf3+=) 25.Bg2 Bg2 (25...Bc8 26.Qa2=) 26.Ng2 (26.Kg2 Qe6 27.Qf3 Kh7=) 26...Qg4 (26...Qe6 27.Qe6 fe6 28.Bd2=) 27.Qg4 Ng4 28.f4 f5 (better is 28...g6=) 29.Nh4+/– Kf7 (29...Bf8 30.h3 Nf6 31.Kf2+/–) 30.Nf5 Be7 (30...Bf8!?+/–) 31.Ne7 (31.h3 Nf6+–) 31...Ke7 32.Kg2 (32.h3 Nf6+–) 32...Ke6 (32...g6 33.h3 Nf6 34.f5 gf5 35.Bh6+–) 33.h3 Nf6 34.Kf3 h5 35.g4 g6 (35...hg4 36.hg4 g6 37.Bd2+–) 36.Bd2 Ke7? (36...hg4 37.hg4 Ng8+–) 37.f5 hg4? (37...gf5 38.gf5 Kd7+–) 38.hg4 gf5 39.gf5 Nd7 (39...Kd7 40.Be1+–) 40.Ke4 (40.Bg5 Ke8+–) 40...Nf6 41.Ke5 (41.Kf4 Nh7+–) 41...Ng4 42.Kd5 Nf2?? (42...Kd7 43.Bg5 Ne3 44.Ke4 Ng4+–) 43.Kc6 (better is 43.Bg5!? Kf7 44.Kc6 Nd3 45.Kb6 Kf8+–) 43...Nd3 44.Kb6 Kf6 (44...Kd7+–) 45.Kc6 Kf5 46.b6 Ne5 47.Kc5 Nd7 48.Kc6 (48.Kb5 Ke4 49.c5+–) 48...Nb6 (48...Ke6+–) 49.Kb6 Ke6 50.Kc7 (50.c5 Kd7 51.Kb7 Ke6 52.c6 Kd5 53.Bh6 d3 54.Bd2 Kd6 55.c7 Kc5 56.c8Q Kd5 57.Qf5 Kc4 58.Qe4 Kb3 59.Qd3 Kb2 60.Qc3 Ka2 61.Bc1 Kb1 62.Qb2) 50...Ke5 51.c5 Kd5 52.c6 Ke6 (52...Kc4 53.Kb7 Kb3 54.c7 Kc2 55.Bf4 Kd3 56.c8Q Ke4 57.Bh6 Kf3 58.Qh3 Kf2 59.Bd2 Ke2 60.Bf4 Kf2 61.Qd3 Kg2 62.Qe2 Kh3 63.Qf3 Kh4 64.Qg3 Kh5 65.Qg5) 53.Kb7 Kd5 (53...Kf6 54.c7 Ke6 55.Bg5 Ke5 56.c8Q Ke4 57.Qe8 Kf3 58.Qh5 Kg2 59.Qg4 Kf2 60.Qd4 Kg2 61.Qf4 Kg1 62.Qf3 Kh2 63.Qg4 Kh1 64.Qh3 Kg1 65.Be3) 54.c7 Ke4 55.c8Q Kd3 56.Bh6 (56.Bh6 Ke4 57.Qc6 Kf5 58.Qd5 Kg4 59.Qd4 Kf5 60.Qf4 Kg6 61.Kc6 Kh7 62.Qf6 Kg8 63.Qg7; 56.Qc1 Ke2 57.Qe1 Kf3 58.Qf1 Kg3 59.Qd3 Kg4 60.Qd4 Kf5 61.Qf4 Ke6 62.Kc6 Ke7 63.Qf5 Ke8 64.Bb4 Kd8 65.Qd7) 1–0. Starr,Albert Martin – Kwok,James, San Francisco TNM Summer op, 2006.

6.Nf3 Nbd7 7.Be2 c6 8.bc6 bc6 9.Nc3 Rb8 10.Rb1 Nb6=+.

6.Nf3 Nbd7 7.Be2 c6 8.bc6 bc6 9.Nbd2 Rb8–/+.

6.Nf3 e4 7.de4 de4 8.Nd4 c5 9.Nb3 Be7 10.Qd8 Rd8=+.

6.Nf3 Qe7 7.Be2 Bd7 8.c4 c6 9.Nc3 dc4 10.dc4 Rd8=+.

6.Nf3 Re8 7.Be2 a6 8.Nc3 Bd7 9.a4 c6 10.0-0 b6=+.

5.d3 a6

6.a4 0-0 7.Nf3 e4 8.de4 de4 9.Nd4 c5 10.Nb3 ab5–/+.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.Be2 c6 10.bc6 bc6=+.

6.ba6 Na6 7.Nf3 Qe7 8.Be2 0-0 9.Nc3 Bd7 10.Qd2 b5–/+.

6.d4 e4 7.c4 0-0 8.c5 Be7 9.Qa4 b6 10.c6 Ra7=+.

6.Nf3 Nbd7 7.ba6 ba6 8.Nc3=+.

6.Nf3 Qe7 7.d4 e4 8.Ne5 ab5 9.Bb5 Nbd7 10.c4 Bb4–/+.

6.Nf3 Bg4 7.ba6 Na6 8.Be2 e4 9.de4 de4 10.Nd4 Be2=+.

5.d4 ed4

6.ed4 0-0 7.Bd3–/+.

6.ed4 Qe7 7.Qe2 Be6 8.Nf3 0-0 9.Qe3 Re8 10.Bd3 (10.Ne5 Bf5–/+) 10...Ng4 11.Qe2 (11.Qd2 Bf5 12.Kf1 Bf4–+) 11...Bf5 12.Qe7 Re7 13.Kf1 Bd3 14.cd3 Nd7 15.a3 (15.Ba3 Ba3 16.Na3 a6–/+) 15...Rae8 16.Nc3 a6 (16...Ndf6!? 17.Ne5–+) 17.a4–/+ c6 18.h3 (18.bc6 bc6 19.Ba3 Ba3 20.Ra3 f5–/+) 18...Ngf6 (18...Nh6 19.Ba3 Nf5 20.Nh4 Ba3 21.Nf5–+) 19.Ba3 Ba3 20.Ra3 ab5 (20...cb5 21.ab5 Re6 22.ba6 Ra6 23.Ra6 ba6 24.Na4–/+) 21.ab5 Re6 22.g3 cb5 23.Nb5 Rb6 24.Ra5 Rc8 (24...Rc6 25.Ra7=+) 25.Kg2 Ra6 26.Rha1 Nb8 (26...Rcc6 27.R5a4=+) 27.Ra6 (27.Ne5 Ra5 28.Ra5 Nc6 29.Nc6 bc6+/–) 27...ba6 (< 27...Na6 28.Nd6 Rc2 29.Nb7+/–) 28.Nd6 Rc6 29.Nf5 Kf8 30.Ne5 Re6 (30...Rb6 31.Rc1 Ne8 32.Rc8+–) 31.g4 (31.Rc1 a5=) 31…g6 (31...h5 32.Rc1 hg4 33.Rc7 (< 33.hg4 Nfd7+=) 33...gh3 34.Kh3+–) ½–½. Schulz,Hans_Juergen – Baer,Werner, TT–07 TSC, 2003.

6.Qd4 0-0 7.Nf3 (7.Nc3 c6 8.Nf3 a6=+) 7...c5 8.Qd1 a6 (8...Nbd7 9.Be2=+) 9.a4 (9.Nc3 c4 10.Nd4 ab5 11.Ndb5 Be5–/+) 9...Re8 (9...ab5 10.Bb5 Nc6 11.0-0–/+) 10.Be2 ab5 11.ab5 (11.Bb5 Nc6 12.0-0 Bg4–/+) 11...Ra1 12.Ba1 Be6 (12...Bf5 13.Bf6 Qf6 14.Qd5 Bc2 15.0-0=) 13.0-0=+ Nbd7 14.Nbd2 Qb6 (14...Qe7 15.c4=+) 15.c4 Qc7 (15...Ra8 16.cd5 Bd5 17.e4 Ne4 18.Bc4 Bc4 19.Nc4 Bh2 20.Nh2 Qb5 21.Ng4+=) 16.Qb3 b6 (16...Ra8 17.Rd1=) 17.cd5= Nd5 (17...Bd5 18.Bc4 Qb7 19.Rd1=) 18.Bc4+= N5f6 19.Be6 Re6 20.Rd1 h6 (20...Be5 21.Ne5 Ne5 22.h3+=) 21.Nc4 Ne4 22.Qd3 Nf8 ½–½. Benassi,Aspasio – Gohla,Ulf, Tiger SC, 2000.

6.Qd4 a6 7.Nc3–/+.

6.Qd4 c5 7.Qh4 Nbd7=+.

6.Bd4 0-0=+.

6.Bd4 c5 7.bc6 (7.Bb2!?–/+) 7...Nc6 8.Nc3 (8.Nf3 0-0 9.Nbd2 Ne4–/+) 8...Nd4 (8...0-0!? 9.Bf6 Qf6 10.Nd5 Bb4 11.Ke2–+) 9.Qd4–/+ 0-0 10.Rb1 Bc7 (10...a6 11.Bd3–/+) 11.Bd3 Bb6 12.Qh4 d4 13.ed4 Qd4 (13...Bd4 14.Nge2 Bc3 15.Nc3 Re8 16.Kf1–/+) 14.Qd4+= Bd4 15.Nge2 Bb6 16.0-0 Bd7 (16...Rd8 17.Ng3+=) 17.Ne4 (17.Nf4 Bc6+=) 17...Ne4–/+ 18.Be4 Rac8 19.Rfe1 (19.Rfc1 Rc7–/+) 19...Bc6 (19...Rfe8 20.Ng3–/+) 20.Bf5 (20.Bc6!? Rc6 21.c3+=) 20...Rcd8–/+ 21.Rbd1 (21.Nc3 Ba5 22.Rb3 g6–/+) 21...Rfe8 (21...g6 22.Bg4–/+) 22.Rd8–/+ Bd8 (22...Rd8 23.Bd3–/+) 23.Bd3 g6 (23...Bb6 24.Rd1–/+) 24.Rd1 Bf6 (24...Bb6 25.c3–/+) 25.f3 Kg7 (25...Rd8 26.Kf2–/+) 26.Kf2 h5 (26...Rd8 27.c3–/+) 27.Bc4 (27.c3 Rd8–/+) 27...b5 28.Bd3 (28.Bb3 b4–/+) 28...b4 (28...Be7 29.c3 Bc5 30.Nd4–/+) 29.Ba6 (29.Bc4 Rc8–/+) 29...Re5 (29...Ba4 30.Rb1 Rb8 31.Rd1–/+) 30.Nc1 (30.Nd4 Rd5 31.Ke3 Rd8–/+) 30...Rc5 (30...Ra5 31.Bc4–+) 31.Rd2 Rd5 (31...h4 32.Nb3 Rc3 33.Be2–/+) 32.Nd3 (32.Rd5 Bd5 33.Ke3 Bb2–/+) 32...Rd6 33.Re2 Bf3! 34.Kf3 (34.Kf3 Ra6 Discovered attack; 34.gf3 Bh4 Double attack (34...Ra6 Discovered attack; 34...Bd4 Decoy)) 34...Ra6 35.Nb4 Ra4 (35...Ra3 36.Re3 Ra4 37.Nd5–/+) 36.Nd5 Ra2 37.Nf6 Kf6 38.Ke4 a5 (38...Ke6 39.Kd3 Kd7 40.g3–/+) 39.Kd3 a4 40.Kc3 (40.g3 Kf5–/+) 40...Kg5 41.Rd2 (41.Re4 Kf5 42.Rb4 Ra3 43.Kd4 Ra1–/+) 41...f6 (41...h4 42.Rd4–/+) 42.Kb4 (42.Rd6 h4–/+) 42...h4 43.h3 (43.Kc3 f5–/+) 43...f5–+ 44.Rf2 Kf6 45.Re2 (45.Kc3 g5–+) 45...Kf7 (45...g5 46.Rf2–+) 46.Rf2–/+ Ke6 47.Re2 Kd6 48.Kb5 (48.Kc3 g5–/+) 48...a3 (48...g5 49.Kb4–/+) 49.Rd2 (49.Ka4 g5+=) 49...Ke5–/+ 50.Kb4 g5 51.Kb3 (51.Re2 Kf4 52.Kb3 Ra1–/+) 51...Ra1 52.c4 (52.Re2 Kd4–/+) 52...g4 (52...Rc1 53.Ra2–/+) 53.hg4+= fg4 54.Rc2 Kd6 (54...g3 55.c5 a2 56.c6–/+) 55.Rd2+= Ke5 56.Rc2 Ke6 (56...g3!? 57.c5 a2–/+) 57.Re2 (57.c5 Rf1 58.Ka3 Rf8=) 57...Kd7 (57...Kf6 58.Rf2 Kg6 59.Rc2=) 58.Re4= h3 59.gh3 (59.Rg4?? h2 60.Rg7 Kd6 61.Rg6 Ke5 62.Rg5 Ke4 63.Rg4 Ke3 64.Rg3 Kd2–+) 59...gh3 60.Rh4 Rh1 61.Ka3 ½–½. Rosner,Dirk – Turcot, email SOK–E0008A, 1999.

5.d4 Nbd7

6.c4 dc4 7.Bc4 ed4 8.Bd4 0-0 (8...Ne5 9.Be2=+) 9.Nf3= Nb6 10.Bd3 a6 11.ba6 Bb4 12.Bc3 Nfd5 13.Qb3 c5 14.a3 Nc3 15.Qc2? (15.ab4 Qd3 16.Nc3–/+) 15...Ba5–/+ 16.Nc3 Qf6 17.0-0 (17.Rc1!? Nd5 18.Nd2 Qc3 19.Bh7 Kh8 20.Be4 Qc2 21.Rc2–+) 17...Bc3–+ 18.Rac1 Bb2 19.Bh7 Kh8 20.Qc5 Kh7 21.Qf8 Bc1 22.Rc1 Be6 23.Qc5 Rc8 24.Qh5 Kg8 25.Rc8 Bc8 26.h3 ba6 27.Qe5 Qe5 28.Ne5 Kf8 29.Kh2 (29.Kf1 Ke7–/+) 29...Ke7 30.Kg3 Ke6 31.Nc6 Nc4 32.Nd4 Kd5 33.Nc2 Ke4 34.h4 a5 35.h5 a4 36.Kh4 Bb7 37.Kg3 Kd3 38.Nd4 Na3 (38...Be4 39.Nb5–+) 39.Nf5 Nc4 (40.Ng7 a3–+) 0–1. Rosner,Dirk – Leisebein,Peter (2105), DESC, 1999.

6.c4 ed4 7.Bd4 dc4 8.Nf3–/+.

6.Be2 e4 7.Nd2 0-0 8.Nh3 (8.c4 dc4 9.a3 c3 10.Bc3 Nb6+=) 8...Nb6–/+ 9.c4 (9.Nf4 Bf4 10.ef4 Qd6–/+) 9...dc4 10.Nc4 Nc4 11.Bc4 Bh3 12.gh3 Qd7 13.Bc3 c6 14.a4 (14.Qa4 Rac8–/+) 14...Rac8–+ 15.Bd2 (15.Qb3 Qh3 16.bc6 Rc6–+) 15...cb5 16.Bb5 Opening the c–file gets Black a lot of play 16...Qh3 17.Bf1 Qh4 18.h3 Rc7 19.Bg2 Rfc8 20.0-0 Qg5 21.Qb1 h6 (21...b6 22.Kh1 Rc2 23.Ra2 Ra2 24.Qa2–+) 22.Qb5 Qg6 23.Rfc1 a6 24.Qb6 Nd5 25.Qb1 f5 26.Qb3 Qe6 27.Rc7 Rc7 (27...Nc7?! 28.Qb7 Nd5 29.Bf1+=) 28.Bf1 Kh7 29.Rc1 Rd7 (29...Qg6 30.Kh1 Rd7 31.Be2–/+) 30.Bc4 Qg6 31.Kf1 Nf6 32.Ke2 (32.Be6!? Re7 33.Bc8–/+) 32...Qh5–+ 33.Ke1 Qh3 34.Bf1 Qf3 35.Qd1 Qh1 36.Qb3 (36.Bc3 Nd5 37.Qb3 Nc3 38.Rc3 a5–+) 36...Ng4 37.Qe6 (37.Rc8 Nh2 38.Qc4 b5 39.ab5 ab5 40.Qb5 Ra7 (40...Qf1?! 41.Qf1 Nf1 42.Kf1–+) 41.Qf5 g6–+) 37...Qf3 38.Be2 Qf2 39.Kd1 Nf6 40.a5 Kg6 (40...Qg1 41.Kc2 Rc7 42.Kb1–+) 41.Qb3 (41.Rc4 Ba3–+) 41...h5 (41...Qg1 42.Kc2 Rc7 43.Kb1 Rc1 44.Bc1–+) 42.Bc4 (42.Rc8 f4 43.Rc1 Kh7–+) 42...h4 (42...Rc7 43.Be1 Qf3 44.Kd2–+) 43.Be6 (43.Be1 Qg1 44.Kc2 Qg2 45.Kc3 h3–+) 43...Qf3 (43...Qf1 44.Kc2 Rc7 45.Kb2 Rc1 46.Bf7 Kh6 47.Bc1–+) 44.Kc2 Rc7 45.Kb1 Rc1 46.Bc1 h3 47.Qb7 (47.Bf7 Kh7 48.Qe6 h2 49.Qd6 h1Q–+) 47...h2 48.Qa6 h1Q (48...Bg3!? 49.Qb5 h1Q 50.a6–+) 49.Qd6 Qe3 (49...Qe3 50.Qc6 Qd4–+) 0–1. Steingraeber,Barbara (1675) – Hoegerl,Gerd (2125), DESC, 2002.

6.Nf3 e4 7.Ne5 0-0 8.c4 Qe8 9.Be2 (9.Nd7!? Bd7 10.Nc3=+) 9...Ne5–/+ (9...Be5?! 10.de5 Ne5 11.cd5=) 10.de5 Be5 11.Be5 Qe5 12.Nd2 dc4 13.Bc4 Rd8 14.Qc2?? (better is 14.Rc1–/+) 14...Qa1–+ 15.Nb1 Qe5 (16.Nd2 a6–+) 0–1. Steingraeber,Barbara – Nowsky,Michael, remoteschach.de, 2003.

5.d4 e4

6.Ba3 0-0 7.Bd6 cd6 (7...Qd6 8.c4 Bg4 9.c5 Qe6=+) 8.Be2 Bd7 9.Qd2 Qc7 =+.

6.Ba3 Ba3 7.Na3 Qe7 (7...0-0=+ 8.c4 c5 9.Nc2 Bg4=+; 7...Bg4 8.Qd2 0-0 9.c4 a6=+; 7...Qd6 8.Nb1 a6 9.ba6 Na6=+; 7...c5 8.Qd2 cd4 9.ed4 Qe7=+) 8.Nb1 a6 9.c4 ab5 =+.

6.Ba3 a6 A) 7.Qd2 Ba3 (7...0-0 8.Bd6 Qd6 9.Nc3 ab5=+; 7...ab5 8.Bb5 Bd7 9.Bd7 Qd7=+; 7...Be6 8.Bd6 Qd6 9.Nc3 0-0–/+) 8.Na3 ab5 9.Nb5 c6–/+; B) 7.c4 ab5 (7...Ba3 8.Na3 ab5 9.Nb5 Be6=+; 7...dc4 8.Bc4 ab5 9.Bb5 Bd7=+) 8.Bd6 Qd6 9.cd5 0-0=+; C) 7.Qc1 ab5 (7...0-0 8.Bd6 Qd6 9.Qa3 Qa3=+; 7...c6 8.Bd6 Qd6 9.ba6 Na6=+) 8.Bb5 c6 9.Bd6 Qd6–/+; D) 7.ba6 Ba3 (7...Na6 8.Bd6 Qd6 9.c4 0-0=+) 8.Na3 Na6 9.Rb1 Qe7–/+; E) 7.Bd6 Qd6 8.ba6 Na6 9.c4 0-0=+.

6.Ba3 Be6 A) 7.c3 0-0 (7...Ba3 8.Na3 0-0 9.Ne2 a6=+; 7...a6 8.Qa4 0-0 9.Nd2 Ba3=+; 7...c6 8.Qb3 Ba3 9.Na3 0-0=+; 7...Qe7 8.Bd6 Qd6 9.Nd2 0-0=+) 8.Bd6 Qd6 9.Nd2 a6=+; B) 7.Be2 a6 (7...Ba3 8.Na3 a6 9.ba6 0-0=+; 7...0-0 8.Bd6 Qd6 9.Nd2 a6=+) 8.Bd6 Qd6 9.Nc3 0-0–/+; C) 7.Qc1 0-0 (7...a6 8.ba6 Na6 9.Qb2 Ra7=+; 7...Qe7 8.Bd6 Qd6 9.c4 0-0=+; 7...Qd7 8.Bd6 Qd6 9.c4 0-0=+) 8.Bd6 Qd6 9.Nd2 a6–/+; D) 7.Qd2 a6 (7...Ba3 8.Na3 Qe7 9.Qa5 0-0=+; 7...0-0 8.Bd6 Qd6 9.Ne2 a6=+) 8.Qa5 0-0 9.Be2 Bg4=+; E) 7.Bd6 Qd6 8.Nd2 a6 9.ba6 Na6=+.

6.Ba3 Bg4 A) 7.Qd2 a6 (7...Ba3 8.Na3 0-0 9.c4 a6=+) 8.Bd6 Qd6 9.Qa5 b6=+; B) 7.Ne2 a6 (7...Ba3 8.Na3 a6 9.ba6 Ra6=+; 7...0-0 8.h3 Ba3 9.Na3 Be2=+; 7...c6 8.Bd6 Qd6 9.bc6 Nc6=+) 8.Bd6 Qd6 9.ba6 Na6=+; C) 7.Be2 Ba3 (7...Be2 8.Ne2 0-0 9.Bd6 Qd6=+) 8.Na3 Qe7 9.Qc1 a6–/+; D) 7.Qc1 0-0 (7...Be6 8.Bd6 Qd6 9.c4 0-0=+; 7...a6 8.Bd6 Qd6 9.Qa3 Qa3=+; 7...Ba3 8.Qa3 Nbd7 9.h3 Bf5=+; 7...Qe7 8.Bd6 Qd6 9.Nd2 0-0=+) 8.c4 dc4 9.Bc4 a6=+.

6.a4 0-0 7.Ba3=+ a6 (7...Bg4 8.Be2 Ba3 9.Na3 Be6=+; 7...Ba3 8.Na3 Nbd7 9.Be2 a6=+; 7...Be6 8.Bd6 Qd6 9.Nd2 a6=+; 7...Re8 8.Bd6 Qd6 9.c4 Bg4=+) 8.Bd6 Qd6 9.Nd2 Bg4 (9...Be6 10.Ne2=+) 10.Be2 (10.Ne2 Nbd7=+) 10...Be6 11.h4 (11.Nb3 ab5 12.ab5 Nbd7–/+) 11...ab5–/+ 12.ab5 Nbd7 13.Nh3 Nb6 (13...Bh3 14.Rh3 Nb6 15.Qc1–/+) 14.Nf4 Na4 15.Qc1 (15.Ne6 fe6 16.c4 Nc3=+) 15...Nc3 16.Ra8 Ra8 17.Qb2 Ne2 18.Ne2 Qa3 (18...Ra5 19.0-0–/+) 19.Qa3=+ Ra3 20.Nb3 Ne8 21.Nc3 Nd6 22.Kd2 (22.h5 Nc4=+) 22...Nc4 23.Ke2 Kf8 24.f3 f5 25.Ra1= b6 26.Rg1 Ke7=+ 27.Rf1 g6 28.Rh1 Kd6 29.Rf1 h5 30.fe4 de4 31.Rc1 Bd7 32.g3 Ke7 33.Kf2 Ke6 34.Nb1 Ra8 35.Nc3 Nd6 36.d5 Ke5 37.Nd4 Ra3 38.Nb1 Ra1 39.Nb3 Ra4 40.Nc3 Rb4 41.Ne2 Nb5 42.Nd2 Kf6 43.Nb3 Bc8 44.Nf4 Bb7 45.c4 Na3 46.Nd2 Rb2 47.Ke1 Nc2 48.Ke2 Ba6 49.Ne6 c6 50.Nf4 c5 51.d6–/+ Nb4 52.Kd1 Ra2 53.Ng6 Ke6 54.Nf4 Kd6 55.Nh5 Ra3 56.Ke2 b5 57.Nf4 Na2–+ 58.Rc2 Nc3 59.Ke1 bc4 60.Rc1 Na2 61.Nc4 Bc4 62.Rc4 Re3 63.Kf2 Rf3 64.Kg2 Nc3 65.h5 Nd1 66.Rc1 Ne3 67.Kh3 Rf2 68.Kh4 Ng2 69.Ng2=+ Rg2 70.Rh1 Ke7 71.h6= Kf7 72.h7 Kg7 73.Kg5 Kh8 74.Kf5 ½–½. Haznedaroglu,Kivanc (1990) – Cottarelli,Franco (2185), corr ICCF WSTT/3/06/2, 2006.

6.a4 0-0 7.c4 Bb4 (7...Be6 8.c5 Be7 9.Ne2 a6=+; 7...a6 8.c5 Be7 9.Nc3 Be6=+; 7...Bg4 8.Qc2 dc4 9.Bc4 a6=+; 7...dc4 8.Bc4 Nbd7 9.a5 a6=+) 8.Bc3 Be7 9.Nd2 Be6=+.

6.a4 0-0 7.Ne2 Be6 8.Ng3 Nbd7 9.Be2 Nb6 10.0-0 Nc4 11.Bc4 dc4 12.Nc3 Bg3 13.fg3 Nd5 14.Nd5 Bd5 15.c3 f5 16.Rf4 Rf6 17.g4 fg4 18.Rf6 Qf6 19.Qg4 Qh6 20.Qg3 Rf8 21.Rf1 Rf1 22.Kf1 Qf6 23.Qf2 Kf7 24.Qf6 Kf6 25.Kf2 c6 26.bc6 Bc6 27.a5 b6 28.ab6 ab6 29.Ba3 b5 30.Bb4 Kg5 31.Kg3 h5 32.h4 Kf5 33.Bd6 g6 34.Kh3 Bd7 35.g3 Ke6 36.Bb4 Kf5 37.Kg2 Kg4 38.Bc5 Be6 39.Be7 Bd7 40.Bd6 Be6 41.Be7 Bd7 42.Bd6 Be6 43.Be7 Bd7 ½–½. A_VB – lndro, lichess.org, 2019.

6.a4 a6 7.Ba3 ab5 (7...Bg4 8.f3 ef3 9.gf3 Bf5=+; 7...0-0 8.Bd6 Qd6 9.Nd2 Bg4=+; 7...Be6 8.Bd6 Qd6 9.Nd2 0-0=+; 7...Ba3 8.Na3 Qe7 9.c3 0-0=+) 8.Bb5 Bd7 9.Bd7 Qd7 =+.

6.a4 Bb4 A) 7.Nd2 0-0 (7...Be6 8.c3 Bd6 9.Ba3 0-0=+; 7...Ng4 8.h3 Qh4 9.g3 Qh6=+) 8.c3 Be7 9.Ba3 a6=+; B) 7.c3 Ba5 (7...Bd6 8.c4 Be6 9.c5 Be7=+; 7...Be7 8.Ba3 Ba3 9.Na3 0-0=+; 7...Bf8 8.c4 Be6 9.cd5 Nd5=+) 8.Nd2 c6 9.Nb3 Bc7=+.

6.a4 Bg4 A) 7.Qd2 a6 (7...0-0 8.Ba3 Ba3 9.Na3 a6=+; 7...Nbd7 8.Ba3 Ba3 9.Na3 0-0=+; 7...Be6 8.Ba3 a6 9.Bd6 Qd6=+; 7...Qd7 8.c4 Be6 9.c5 Be7=) 8.Ba3 0-0 9.h3 Be6=+; B) 7.f3 ef3 (7...Bf5 8.Ba3 Ba3 9.Ra3 ef3=+; 7...Be6 8.Ba3 Ba3 9.Na3 Qe7=+; 7...Bh5 8.Ba3 ef3 9.Nf3 0-0–/+) 8.gf3 Bf5 9.Bd3 Bd3–/+; C) 7.Be2 Be2 8.Ne2=+ a6 9.Nd2 Qd7=+.

6.a4 Ng4 7.Be2 h5 (7...Qg5 8.g3 h5 9.Nh3 Qf5=+) 8.c4 Qh4 9.Bg4 hg4 –/+.

6.c4 a6 A) 7.Nc3 ab5 (7...dc4 8.Bc4 ab5 9.Nb5 Bb4=+) 8.Nb5 Bb4 9.Nc3 0-0=+; B) 7.cd5 Nd5 8.Nd2 Ne3 9.fe3 Qh4–/+; C) 7.ba6 Na6 (7...Bb4 8.Bc3 Na6 9.Qb3 Be7=) 8.c5 Be7 9.Qa4 c6=+; D) 7.Nd2 0-0 (7...Be6 8.c5 Be7 9.Qa4 Nbd7=+; 7...ab5 8.c5 Be7 9.Bb5 Bd7=+; 7...dc4 8.Qa4 0-0 9.Bc4 Nbd7=+; 7...Bb4 8.Qa4 Bd2 9.Kd2 c6=+) 8.cd5 ab5 9.Bb5 Bb4=+; E) 7.Qc2 dc4 (7...ab5 8.c5 Be7 9.Bb5 Bd7=+) 8.Bc4 ab5 9.Bb5 c6=+; F) 7.Ba3 ab5 (7...Ba3 8.Na3 ab5 9.Nb5 Be6=+; 7...dc4 8.Bc4 ab5 9.Bb5 c6=+) 8.Bd6 Qd6 9.cd5 0-0=+; G) 7.c5 Be7 8.Qa4 0-0 9.Nc3 b6=+.

6.c4+= Bb4 7.Bc3 (7.Nc3 0-0+=) 7...Bc3 (7...Be7!?+=) 8.Nc3= c6 (8...Nbd7 9.c5=) 9.c5 (9.cd5 Nd5 10.Ne4 0-0+=) 9...Bd7 (9...0-0 10.Rb1=) 10.a4 0-0 11.Qd2 (11.Nge2 a6=) 11...Be6 (11...a6 12.ba6 Na6 13.Ba6 Ra6 14.Nge2=) 12.Nge2= Nbd7 (12...b6 13.cb6 ab6 14.Nf4=) 13.Nf4+= Bf5 14.Be2 (14.h4 h6+=) 14...Qc7 (14...g5 15.Nh3 h6 16.0-0=) 15.h3 (15.h4 h6+=) 15...g5= 16.Nh5 Nh5 17.Bh5 Nf6 (17...b6 18.cb6 ab6 19.0-0=) 18.Be2+= h5 19.a5 Qd7? (better is 19...a6 20.ba6 ba6+/–) 20.a6+– b6 21.cb6 ab6 22.bc6 Qc6 23.Bb5 (23.0-0!? g4 24.hg4 Bg4+–) 23...Qc7 (23...Qd6 24.0-0+/–) 24.Ne2 Bd7 25.Bd7 (25.Qb4!?+–) 25...Qd7+/– 26.h4 (26.0-0 Ra7 27.Ra3 b5+=) 26...g4 (26...gh4 27.Nf4 Qb5 28.Qe2 Qb4 29.Kf1+=) 27.Nf4 (27.0-0!?+/–) 27...Qb5= 28.Qe2 Qe2?? (28...Qb4 29.Qd2 Qb5 30.Qa2=) 29.Ne2?? (better is 29.Ke2 Rfc8 30.Rhb1+/–) 29...Ra7= 30.0-0 Rfa8 31.Kh2 Ra6 32.Rab1 Rb8 33.Kg3 Kh7 34.Rfc1 Rb7 35.Rc6+/– The isolani on b6 becomes a target 35...Kg7 36.Rb2 Ra5 37.Rbb6 Rb6+/– 38.Rb6 Ra2 39.Nc3 Rc2 40.Na4 Nd7?? 41.Rd6+– Nf6 42.Nb6 Rc7?? 43.Nd5 Nd5 44.Rd5 Re7 45.Kf4 Kg6 46.Rg5 Kh6 47.Re5 (47.Re5 Rb7 48.Re4+–) 1–0. Roman,Josemar Cespedes – Mercado Robles,Yoan, Ladario BRA, 1st Open, 2013.

6.c4 dc4 7.Bc4 0-0 8.Ba3 a6 9.Bd6 cd6=+.

6.c4 dc4 7.Bc4 0-0 8.Qc2 a6 9.Nc3 ab5 10.Nb5 Bb4 11.Bc3 Na6 12.Rb1 Be7 13.d5 Nc5 14.Ne2 Nd5 15.0-0 c6 16.Rfd1 Bg4 17.Bd4 Nd3 18.Nbc3 Nc3 19.Bc3 b5 20.Rd3 ed3 21.Bd3 Be2 22.Qe2 Qd5 23.Qg4 g6 24.Rd1 Rfd8 25.Be2 Qa2 26.Rd8 Rd8 27.Bf1 Qc2 28.Be5 b4 29.e4 b3 30.g3 Bc5 31.Qf4 Rd2 32.Bc3 Bf2 33.Kh1 Qc3 (34.e5 Qc1–+) 0–1. Pierred (2160) – Pit73 (2555), Rated game, 2005.

6.c4 dc4 7.Bc4 a6 8.Nc3 ab5 9.Nb5 Bb4=+.

6.c4 dc4 7.Bc4 Nbd7 8.Nc3 Nb6 9.Bb3 0-0=.

6.c4 c6 7.a4 0-0 8.Nd2 Ng4 (8...Bb4 9.Nh3-/+) 9.Be2 Qh4 Will h2 fall? (worse 9...Nh2 10.g3 Nf3 11.Ngf3 ef3 12.Bf3+/-) 10.Bg4 (10.g3 Qh5=+) 10...Bg4 (10...Qg4?! 11.Qg4 Bg4 12.Ne2=) 11.Ne2 f5 (better 11...Nd7-/+) 12.h3?? (better 12.Qb3=) 12...f4-+ 13.Nf4?? (better 13.ef4 e3 14.0-0 Bf4 15.f3 Bh3 16.gh3 Qh3 17.Nf4 Rf4 18.Qe2-+) 13…Bd1 (13...Bd1 14.g3 Qe7 (14...Bf4?! 15.gh4 Bf3 16.Nf3-/+) 15.Rd1 dc4-+) 0-1. FireWorks (1710) - Lance5500 (2610), lichess.org, 2016.

6.c4 Be6 7.c5 Be7 8.Ne2 Bg4 9.h3 Bh5=.

6.c4 Bg4 7.Qc2 dc4 (7...c6 8.Nc3 Nbd7 9.bc6 bc6=; 7...Be6 8.cd5 Bd5 9.Nc3 Bb4=) 8.Bc4 a6 9.Nc3 ab5=.

6.Nd2 Ng4 7.c4 Nh2 (7...Ne3 8.fe3 Qh4 9.Ke2 Bd7 10.Qb3 Bg4=; 7...Qf6 8.Nh3 Nh2 9.cd5 Qg6 10.Qc2 Bf5=+) 8.cd5 Nf1 (8...Qh4 9.Qc2 0-0 10.Qe4 Nf3=+) 9.Kf1 Bf5=+ 10.Ne2 0-0 =+.

6.Nd2 Ng4 7.Be2 Qg5–/+ (7...Nh2?! 8.g3 Bg3 (8...Nf3 9.Ngf3 ef3 10.Bf3 Be6+=) 9.fg3= Qg5 10.Rh2 Qg3+=) 8.Nh3 (8.g3 Qf5 9.Bg4 Qg4 10.Qg4 Bg4+=; 8.h4 Qg6 9.h5 Qg5 10.Nh3 Qh4–/+) 8...Qh4 (8...Qg6 9.c4 Nh2 10.g3 Bh3–/+) 9.Nf1 Nf6 (9...0-0 10.Qd2–/+ Nf6–/+) 10.Nf4 g5 (10...Bf4 11.ef4 Qf4 12.Ne3–/+) 11.g3 Qh6 12.Nh5 Nh5 13.Bh5 Bh3 14.Rg1 (14.Rc1 a6 15.ba6 Na6–/+ (worse is 15...ba6 16.c4=)) 14...c6 (14...a6 15.a4–/+) 15.Be2 (15.bc6 Nc6 16.Nd2 Be6+=) 15...cb5 (15...Bf1 16.Rf1 Qh2 17.bc6 Nc6 18.c3+=) 16.Bb5+= Nd7 17.Nd2 a6 (17...Rc8 18.Be2+=) 18.Be2 b5 19.a4 0-0 (19...b4 20.c4 bc3 21.Bc3+=) 20.ab5= ab5 21.Bb5 Rab8 22.Qe2 Nf6 23.Ra6 Rfd8 24.c4 (better is 24.Ba3!? Ba3 25.Ra3=) 24...Bg4–/+ 25.Qf1 dc4 26.Qc4 Qh2 27.Rf1 Bh3 28.Bc1 (better is 28.Ra7!? Rf8 29.d5–+) 28...Rdc8 29.Rc6 Rc6 (29...Bf1?? 30.Rc8 Kg7 31.Nf1 Rc8 32.Qc8+–) 30.Bc6 Bb4 31.Kd1 Qg2 0–1. Haznedaroglu,Kivanc (1990) – Aymard,Michel (2010), corr ICCF WSTT/3/06/3, 2006.

6.Nd2 Ng4 7.g3 A) 7...Nf6 8.c4 Bb4 (8...0-0 9.cd5 Bb4 10.a3 Ba5=+; 8...Be6 9.cd5 Bd5 10.Ne2 0-0=+; 8...Bg4 9.Qc2 c6 10.bc6 bc6=+) 9.a3 Ba5 10.cd5 0-0=+; B) 7...Be6 B1) 8.Rc1 0-0 (8...Nf6 9.c4 0-0 10.c5 Be7–/+; 8...Qd7 9.c4 0-0 10.Ne2 dc4=+; 8...Bb4 9.c4 0-0 10.cd5 Qd5=+; 8...Qf6 9.Nh3 0-0 10.c4 Qf5=+) 9.c4 Nf6 10.c5 Be7–/+; B2) 8.c4 Nf6 (8...Qg5 9.Nh3 Qf5 10.cd5 Bd5=; 8...Qd7 9.Ne2 dc4 10.Nc3 Nf6=+; 8...Qf6 9.Nh3 dc4 10.Ne4 Qf5=+) 9.cd5 Bd5 10.Ne2 0-0=+; C) 7...Qf6 C1) 8.Qe2 Qf5 (8...0-0 9.c4 Bb4 10.cd5 Nf2=+; 8...Bd7 9.h3 Qh6 10.c4 Nf6=+; 8...a6 9.h3 Qh6 10.c4 Nf6=+) 9.h3 Nf6 10.c4 dc4=+; C2) 8.Nh3 0-0 (8...Qf5 9.c4 0-0 10.cd5 Re8=; 8...Qe7 9.c4 dc4 10.Qc2 a6=; 8...Be6 9.c4 dc4 10.Ne4 Qf5=+; 8...c6 9.c4 0-0 10.Qb3 dc4=+) 9.c4 Qh6 10.Qb3 dc4=+; D) 7...Bf5 8.c4 Nf6 (8...Bb4 9.a3 Ba5 10.Ne2 0-0=; 8...dc4 9.Bc4 0-0 10.h3 Nf6=) 9.cd5 Nd5 10.Bc4 Nb6=+; E) 7...0-0 8.c4 Bb4 (8...Nf6 9.cd5 Bb4 10.a3 Ba5=+; 8...Qg5 9.Nh3 Qh6 10.Qb3 dc4=+; 8...Qf6 9.Nh3 Qh6 10.Qb3 dc4=+; 8...Qd7 9.cd5 Bb4 10.Rc1 Nf6=) 9.cd5 Qd5 10.Rc1 Qf5=+; F) 7...Qg5 8.Nh3 Qh6 (8...Qf5 9.c4 0-0 10.cd5 Re8=) 9.Nf4 Bf4 10.ef4 e3=+; G) 7...c6 G1) 8.bc6 Nc6 (8...bc6 9.c4 0-0 10.c5 Qf6=+) 9.c4 Bb4 10.a3 Qf6=+; G2) 8.c4 0-0 (8...Qf6 9.Qe2 dc4 10.Ne4 Bb4=; 8...Qd7 9.bc6 Qf5 10.Nh3 Nc6=+; 8...Nf6 9.bc6 Nc6 10.cd5 Ne7=+) 9.bc6 bc6 10.c5 Be7=+; H) 7...Qd7 8.c4 Qf5 (8...0-0 9.cd5 Bb4 10.Rc1 Nf6=) 9.Nh3 0-0 10.cd5 Re8=; I) 7...Bb4 8.c3 Ba5 (8...Qf6 9.Nh3 Ba5 10.Qa4 b6=; 8...Be7 9.c4 Bb4 10.cd5 Qd5=) 9.Nb3 c6 10.h3 Nf6=+.

6.Be2 0-0 7.Nd2 c6 8.c4 Be6 (8...dc4 9.Nc4 cb5 10.Nd6 Qd6 11.Qc2–/+) 9.Nh3 (9.c5!? Bc7 10.Qb3=+) 9...Bh3 10.gh3 Qd7 11.Bg4 (11.bc6!? bc6 12.c5–/+) 11...Ng4–+ 12.hg4 Qc7 (12...dc4 13.bc6 Qc6 14.Qc2–+) 13.h3 (13.cd5!? cd5 14.Qb3=) 13...Nd7 (13...dc4 14.bc6 Qc6 15.Qc2–/+) 14.f3 (14.Qb3 dc4 15.Qc4 Rfe8=+) 14...Bg3 (14...Bb4 15.bc6 Qg3 16.Kf1 Bd2 17.cb7 Be3 18.Qe2 ef3 19.Qh2 Qh2 20.Rh2–+) 15.Ke2 (15.Kf1–/+) 15...Bh4 (15...ef3 16.Kf3 f5 17.Qb3–/+) 16.a4 (16.cd5 cd5 17.fe4 Qb6=) 16...Qg3 (16...dc4 17.Ne4 Rfc8 18.d5 cd5 19.Qd5=+) 17.Qf1 Nf6 18.Rg1 Qh2 (18...Qc7 19.fe4 Ne4 20.Ne4 de4 21.Qf4=) 19.Rg2 (19.Qg2 Qc7 20.g5 Nh5=) 19...Qh3= 20.Qh1 Qh1 21.Rh1 g5 22.f4 (22.fe4 Ne4 (< 22...de4 23.Rf1 Nd7 24.Ne4+/–) 23.Ne4 de4=+) 22...Kh8 (22...cb5!? 23.cb5 Rfc8–/+) 23.Ba3= Rfe8 24.Bd6 Nd7 25.Rgh2 Nf6 (25...h6!?=) 26.fg5+/– Bg5 27.Be5 Kg7 28.Bf6 (28.Rh7 Kg6 29.Bf6 Bf6 30.R1h6 Kg5 31.Rh5 Kg4 32.cd5 cd5 33.Rd5 Re7+–) 28...Bf6 (28...Kf6 29.Rh7 Re7 30.Rf1 Kg6 31.Rh5+=) 29.Rh7+/– Kf8 (29...Kg6 30.R1h6 Kg5 31.Rh5 Kg4 32.cd5 cd5 33.Rd5+–) 30.g5 Bg5 31.Rf1 f6 32.Rb7 Re7? (32...dc4!? 33.bc6 Rac8+–) 33.Re7 (33.bc6 Rb7 34.cb7 Rb8 35.cd5 Rb7 36.Ne4 Ke7+–) 33...Ke7 34.bc6 Kd6 (34...dc4 35.d5 Kd6 36.Rf5+– (36.Ne4?! Kd5 37.Nd2 Kc6=)) 35.cd5 Kd5 36.c7 (36.Rc1!? f5 37.Rc5 Ke6+–) 36...Rc8 37.Rc1 f5 38.Nb3 (better is 38.Rc5 Ke6 39.Nc4+–) 38...f4?? (38...Be7 39.Rf1 Ke6 40.d5 Kd5 41.Rf5 Kd6 42.Nc5+/–) 39.ef4 (better is 39.Rc5 Kd6 40.Rg5 f3 41.Kd1 Rc7 42.Re5+–) 39...Bf4+/– 40.Rc5 Kd6 41.Nd2 e3 42.Ne4 Kd7 (better is 42...Ke6!?+/–) 43.Nf6+– Ke6 (43...Kd6 44.Nd5 Bh6 45.a5+–) 44.Nd5 (44.Rc6!? Ke7+–) 44...Bd6 45.Ra5 Bc7 46.Rc5 (46.Nc7?! Rc7 47.Ke3 Kd6+/–) 46...Kd7 47.Nc7 Rc7 48.Rc7 Kc7 49.Ke3 Kd6 50.Ke4 a5 (50...Ke6+–) 51.d5 Kd7 52.Ke5 Ke7 53.d6 Kd7 54.Kd5 Kc8 (54...Kd8 55.Kc6 Kc8 56.Kb6+–) 55.Ke6 Kd8 56.d7 1–0. Steingraeber,Barbara – Neffgen,Dieter, RSX9E – A00 – Sokolsky–1, 2002.

6.Be2 a6 7.ba6 (7.c4 dc4 8.ba6 b5 9.a4 c6–/+) 7...Na6 (7...b6 8.c4 dc4 9.Nd2 0-0=+) 8.Ba3 0-0 9.Bd6 Qd6 –/+.

6.Be2 c6 A) 7.a4 a6 (7...Nbd7 8.Ba3 c5 9.Nc3 Qc7=+; 7...Qc7 8.h3 Nbd7 9.Nd2 0-0=+; 7...Qa5 8.Nd2 0-0 9.c4 b6=+) 8.bc6 Nc6 9.Ba3 Qa5=+; B) 7.Nd2 Qc7 (7...Be6 8.a4 0-0 9.Ba3 Ba3=+; 7...0-0 8.a4 Be6 9.Ba3 Ba3=+; 7...Bd7 8.a4 0-0 9.c4 dc4=+; 7...cb5 8.Bb5 Bd7 9.Be2 Nc6–/+) 8.c4 Be6 9.c5 Bh2–/+; C) 7.c4 dc4 8.Bc4 0-0 9.Nc3 a6=+.

6.Be2 Bd7 7.Nh3 c6 8.c4 0-0 9.a4 a6 10.0-0 c5 11.dc5 Bc5 12.Nf4 Be6 13.Ne6 fe6 14.cd5 ed5 15.Bf6 Rf6 16.f3 Be3 17.Kh1 ef3 18.Bf3 Rf5 19.Bd5 Rd5 20.Qb3 Kh8 21.Na3 ab5 22.Nb5 Bd4 23.Nd4 Rd4 24.Qb7 Na6 25.Qc6 Nb4 26.Qb5 Nc2 27.Rac1 Ne3 28.Rfe1 Rd5 29.Qe2 Nf5 30.Qf3 Nd4 31.Qf4 Nb3 32.Qg3 Nc1 33.Rc1 Ra4 34.h3 Rad4 35.Rf1 Rd3 36.Qf4 h6 37.Kh2 Kh7 38.Rf3 Rf3 39.Qf3 Rd4 40.Qf5 Kh8 41.Qf3 Qh4 42.Kh1 Rf4 43.Qa8 Kh7 44.Qa2 Rf1 45.Kh2 Qf4 46.g3 Rf2 47.Kg1 Qg3 48.Kh1 0–1. axtur777 – santireho, lichess.org, 2019.

6.Ne2 0-0-/+ 7.Ng3 Ng4 8.Be2 Qh4 9.Nd2? (9.Nc3 c6 10.Bg4 Bg4-/+) 9...f5?? (better 9...a6 10.ba6 Na6-+) 10.Bg4=+ fg4 11.0-0 (11.c4!? Be6 12.cd5 Bd5 13.Nge4=+) 11...Rf6-+ 12.Re1 Be6 13.Ndf1 (13.c4 Nd7 14.c5 Be7-+) 13...Nd7 (13...a6 14.a4-+) 14.Re2? (14.c4 Raf8 (14...dc4?! 15.d5 Bf7 16.Bf6 Nf6 17.Rc1=+) 15.c5 Bg3 16.fg3 Qh5-/+) 14...Raf8 (14...Nb6!? 15.a4 Nc4 16.Bc3-+) 15.Bc3 (15.c4 Bg3 (15...dc4 16.d5 Bf7 17.Bf6 Nf6 18.Nf5+=) 16.Ng3 Rh6-+) 15...Rf3! 16.Be1 (16.gf3 gf3 Combination) 16...h6 (16...R3f7 17.Rb1-+) 17.a4 (17.a3 R3f7-/+) 17...Nf6 (better 17...R3f7-+) 18.gf3?? (better 18.Qb1-/+) 18...gf3 19.Rd2 (19.Nf5 Bf5 20.Rd2 Qh3 21.Qf3 ef3 22.Ng3 Qg2) 19...Qh3 20.Qf3 ef3 (20...ef3 21.e4 Qg2) 0-1. FireWorks (1675) - Lance5500 (2460), lichess.org, 2017.

6.c4 0-0

7.Qb3 a6 8.c5 Be7 9.Nc3 ab5=+.

7.Qb3 dc4 c6 8.c5 Be7 9.Nd2 cb5=+) 8.Bc4 Nbd7 9.Qc2 Nb6=+.

7.Qb3 c6 8.c5 Be7 9.Nd2 cb5=+.

7.Qb3 Be6 8.c5 Be7 9.Ne2 c6=+.

7.Qb3 Bf5 8.Ba3 Be6 9.Bd6 cd6=+.

7.Qc2 dc4 8.Bc4 a6 9.Nc3 ab5=+.

7.Qc2 c6 8.Nc3 Qa5 9.c5 Bc7=+.

7.Qc2 c6 8.Nc3 cb5 9.c5 Bc7 10.Nb5 Nc6=+.

7.Qc2 c6 8.Nc3 Qc7 9.Rc1+= Qa5 (9...Bh2 10.bc6 bc6 11.cd5 Bg1 12.Ne4 (worse is 12.Rg1 Qh2 13.Ne2 Bg4–/+) 12...Nd5 13.Nc3= (worse is 13.Rg1 Qh2 14.Ng5 Bg4+=)) 10.bc6 (10.cd5 cd5 11.Qa4 Qd8+=) 10...Nc6–/+ 11.cd5 Nb4 (11...Nd5 12.Qd2 Nc3 13.Bc3–/+) 12.Qd2+= Qd8 (12...Qb6 13.Nh3+=) 13.Bc4 (13.a3 Nbd5 14.Nge2 Bd7+=) 13...a6 (13...Bd7 14.Nh3 Rc8 15.Be2 Nbd5 16.0-0 Bh3 17.Nd5 Nd5 18.gh3–/+) 14.Ba3 (14.a3 b5+=) 14...b5–/+ 15.Be2 (15.Bb4 Bb4 (15...bc4?! 16.Bd6 Qd6 17.Nge2=) 16.Bb3 Qa5–/+) 15...Nbd5 16.Bc5 (16.Bd6 Qd6 17.h4 Bf5–/+) 16...Be6 17.a4 (17.Nh3–/+) 17...ba4 (better is 17...Bc5!? 18.dc5 Nc3 19.Qc3 Nd5–+) 18.Bd6+= Qd6 19.Na4 a5 (19...Rfb8 20.Bd1+=) 20.Ra1 (20.Bd1!?+=) 20...Rfb8–/+ 21.Nc5 a4 22.f3 (22.Nh3 a3 23.0-0 h6–/+) 22...Bf5–+ 23.Bc4 ef3 (23...Nb6 24.Bb5–/+) 24.Nf3–/+ Ne4 (24...Re8!? 25.Bd5 Qd5–/+) 25.Ne4+= Be4 26.0-0 Qb4 Black prepares the advance a3 27.Qa2 Nc3 (27...Ra5 28.Nd2 Ne3 29.Bf7 Kh8 30.Ne4 Nf1 31.Rf1 Qd4 32.Nf2+=) 28.Bf7 Kh8 29.Qf2 (29.Qa3 h6+=) 29...a3 (29...Bf3 30.Qf3 a3 31.Bg6=) 30.Ng5 Qe7 (30...Bd3 31.Be6 Rf8 32.Qf8 Rf8 33.Rf8 Qf8 34.Nf7 Kg8 35.Ng5 Kh8 36.Nf7 Kg8 37.Ng5 Kh8=) 31.Ne4+= Qe4 32.Bh5 Qe7 33.Bf3 (33.Qd2 Rc8+=) 33...Ra4 (33...Ra7 34.Rfc1 Rc7 35.Qe1=) 34.Qd2+= Rc8 35.Bg4 Rc7 36.Bf5 (36.Be6 Qd6+=) 36...g6= 37.Bc2 Ra8 38.Bb3 Qd6 39.Rf7 (39.Qd3 Kg7=) 39...Rf7 40.Bf7 Qb4 41.Qf2 Kg7 42.Be6 (better is 42.Rf1!? a2 43.Qf6 Kh6 44.Qh4 Kg7 45.Qf6 Kh6 46.Qh4 Kg7 47.Qf6=) 42...Rf8–/+ 43.Qe1 a2 (43...Qb2 44.Bc4–/+) 44.h3 (44.Ba2 Na2 45.Qb4 Nb4+=) 44...Rf6 (44...Qb1 45.Ba2 Qe1 46.Re1 Na2 47.Rf1–/+) 45.Ba2 Na2 46.Qb4 Nb4 47.Ra7 (47.Ra4 Nd5 48.Ra7 Kh6+=) 47...Rf7–/+ 48.Ra3 h6 (48...Nd5 49.e4 Nf4 50.Kh2–/+) 49.Rb3 (49.g3 Rc7+=) 49...Nd5–/+ 50.g3 (50.Ra3 h5–/+) 50...Nf6 (50...Rf3 51.Rb7 Kf6 52.e4–/+) 51.Kg2 (51.Rb2 h5–/+) 51...Ne4 52.Rb2 Re7 53.Rc2 Re6 (53...Nd6 54.Rc3–/+) 54.h4+= Rf6 55.d5 (55.g4 Rf7+=) 55...Rf5 (better is 55...Rf7 56.Rc4 Re7–/+) 56.Rc4? (better is 56.Rc7 Rf7 57.Rc4–/+) 56...Nd6–+ 57.Rd4 (57.Rc5 Kf6–+) 57...Kf6 58.g4 Re5 59.Kf3 Re7 60.Ra4 (60.Kf4 g5 61.hg5 hg5 62.Kf3 Ke5–+) 60...Ke5 61.Ra5 Rc7 62.g5 (62.Ke2 Ke4 63.Ra4 Kd5 64.Ra5 Rc5–+) 62...Rf7 63.Kg3 (63.Ke2 hg5 64.hg5 Rf5–+) 63...Nf5 64.Kf3 h5 65.d6 Kd6 66.Ra6 Kc5 67.e4 (67.Ra5 Kb6 68.Re5 Nh4 69.Ke4 Kc6–+) 67...Nd6 (67...Nh4?! 68.Kg3=) 68.Ke2 (68.Ke3 Nc4 69.Ke2 Ne5 70.Ra5 Kd4 71.Ra4 Nc4–+) 68...Rf4 69.e5 Re4 70.Kd3 (70.Kf3 Re5 71.Ra5 Kd4–+) 70...Re5 71.Ra5 Nb5 72.Ra8 Rd5 73.Ke3 (73.Ke4 Nd6 74.Kf4 Nf5–+) 73...Nd6 74.Rg8 (74.Kf4 Nf5–+) 74...Nf5 75.Ke4 Rd6 76.Rc8 (76.Ke5 Nh4 77.Rc8 Rc6–+) 76...Rc6 77.Ra8 Nh4 78.Kf4 (78.Rf8 Nf5 79.Ra8 Nd6 80.Kf4 Kd5–+) 78...Kb4 79.Re8 (79.Rb8 Kc3–+) 79...Rc4 80.Re4 (80.Ke5–+) 80...Nf5 81.Ke5 Re4 82.Ke4 Ng7 (82...Kc4 83.Ke5 Nd4 84.Ke4–+) 83.Kf4 Ne6 84.Kg3 Ng5 (84...Ng5 85.Kf4 Ne6 86.Ke5 Nc5–+) 0–1. bambinik – lamedame, internet, 2002.

7.Qc2 Be6 8.c5 Be7 9.Ne2 a6=+.

7.Qc2 Re8 8.Nc3 c6 9.c5 Bc7=+.

7.Qc2 Bf5 8.Nc3 c6 9.c5 Be7=+.

7.Nc3 a6 8.cd5 Bb4 9.Qb3 Nd5=+.

7.Nc3 dc4 8.Bc4 Nbd7 9.Nge2 Nb6=+.

7.Nc3 c6 8.cd5 (8.bc6 Nc6 9.cd5 Ne7=+) 8...cd5 9.h3 (9.Rc1 Be6=+) 9...Be6 10.Nge2 Nbd7 11.Nf4 Bf4 12.ef4 Nb6 13.Ba3 (13.Qd2 Rc8–/+) 13...Re8–/+ 14.Bc5 (14.Rc1 Nc4 15.Bb4 a5 16.ba6 Ra6–/+) 14...Nfd7 (14...Nc4 15.Qc2–/+) 15.Bb4 (15.Bd6 e3=+) 15...Rc8–/+ 16.g3 Qf6 17.Rc1 Nc4 18.Qb3 a5 19.ba6 ba6 20.Nd1 (20.Be2!?–/+) 20...Qd4–+ 21.Bc4 Rc4 22.Rc4 dc4 23.Qc3 (23.Qe3 Qd3–+) 23...Qd3 24.Qd3 ed3 25.Kd2 Rb8 (25...Nf6 26.Nc3–+) 26.Bc3 (26.a3 Nf6–+) 26...Nc5 27.Re1 Bh3 28.Nb2 Be6 29.f3 (29.Bd4 h6–+) 29...g6 (29...Rc8 30.f5 Bd5 31.Re5–+) 30.g4 Rd8 31.Rc1 Nb7 32.f5 Bd5 33.Bb4 a5 34.Ba3 Rc8 35.Nd3 (35.fg6 hg6 36.Nd3 Rd8–+) 35...Rd8 (35...gf5 36.gf5 h5 37.Ne5 c3 38.Rc3 Rc3 39.Kc3–+) 36.Nf2 (36.Nb2 Bf3 37.Ke3 Bg4 38.fg6 fg6 39.Rc4 h5–+) 36...Bf3 37.Ke3 Bd5 38.Nd1 (38.f6 h6–+) 38...f6 (38...gf5 39.gf5 h5 40.Kf2–+) 39.Nb2 (39.fg6 hg6 40.Nb2 Re8 41.Kd4 Bf3 42.Nc4 Rd8 43.Ke3 Bg4–+) 39...Re8 (39...gf5 40.gf5 Re8 41.Kd4–+) 40.Kd4 Bf3 41.Rc4 (41.Nc4 Bg4 42.fg6 hg6–+) 41...Re4 42.Kc3 Rg4 43.Rc8 Kg7 44.Rc7 Kh6 45.Nc4 gf5 (45...Rg1 46.Bf8 Kg5 47.Rh7 Kf5 48.Rb7 Rc1 49.Kd2 Rc4 50.Rb5 Kg4 51.Ra5–+) 46.Ne3 (46.Bf8 Kg5 47.Rh7 Be4–+) 46...Ra4 47.Kb3 Re4 48.Nd5 Re1 49.Bf8 Kg5 50.Rg7 Kh4 51.Rh7 Kg3 ½–½. Winiger,Albert (1820) – Hort,Wolfgang (1845), KO–014 VCC, 2001.

7.Nc3 Be6 8.c5 Be7 9.Nge2 b6=.

7.Nc3 Bg4 8.Qc2 c6 9.Rb1 Qa5=+.

7.c5 Be7 8.Nc3 a6 9.Qa4 b6=+.

6.Qd2 a6

7.Ba3 ab5

8.Bb5 c6

9.Bd6 Qd6

10.Be2 0-0 A) 11.a4 A1) 11...b5 12.a5 (12.Nc3 Nbd7 13.a5 b4 14.Nb1–/+) 12...Ne8 13.Qc3 Na6 14.Nd2+=; A2) 11...Bg4 12.c4 (12.a5 Be2 13.Ne2 b6 14.0-0+=; 12.Ra3 b6 13.Bg4 Ng4 14.Ne2–/+) 12...dc4 13.Bc4 Nbd7 14.a5+=; A3) 11...b6 12.Qc3 (12.Ra3 Bg4 13.Bf1 Ra5 14.c4–/+) 12...c5 13.Bb5 Bd7 14.Ne2–/+; B) 11.c4 dc4 12.Bc4 Na6 13.Ne2 b5 14.Bb3+=.

10.Be2 b5

11.a3 A) 11...Be6 12.Ra2 0-0 13.Rb2 Na6 14.Qc3–/+; B) 11...0-0 12.Ra2 (12.Qc3 Bg4 13.f3 Bf5 14.Nd2–/+; 12.c3 Bg4 13.Bg4 Ng4 14.Qd1–/+; 12.Bd1 Nbd7 13.Qc3 Ra4 14.Be2–/+; 12.Qc1 Bg4 13.Bg4 Ng4 14.h3–/+) 12...Bg4 13.Rb2 Na6 14.f3–/+; C) 11...Bd7 12.c3 (12.Bd1 0-0 13.Ne2 Bg4 14.0-0–/+; 12.Qc3 Bg4 13.Bg4 Ng4 14.Ne2–/+; 12.h3 0-0 13.Ra2 Ne8 14.Qc3–/+) 12...Ng8 13.Qc2 Ra4 14.Bd1+=; D) 11...Bg4 12.Qd1 (12.c3 Be2 13.Ne2 Nbd7 14.Qc2–/+; 12.Qc3 0-0 13.f3 Be6 14.Nd2–/+; 12.h3 Be2 13.Ne2 Nbd7 14.Qc1–/+; 12.Bg4 Ng4 13.f3 Nf6 14.Qc3–/+) 12...Bf5 13.c3 0-0 14.a4–/+; E) 11...Bf5 12.Qc3 0-0 13.h3 Nbd7 14.Ra2–/+.

11.Qc1 A) 11...Bg4 12.Nd2 (12.Qb2 0-0 13.Qb3 Ra4 14.a3–/+; 12.Qd1 Be2 13.Ne2 0-0 14.0-0–/+; 12.Bg4 Ng4 13.Qd1 f5 14.Ne2–/+; 12.c3 0-0 13.Bg4 Ng4 14.Qd1–/+) 12...Be2 13.Ne2 Nbd7 14.Ng3–/+; B) 11...Be6 12.Qb2 (12.Nc3 0-0 13.a4 b4 14.Nd1–/+; 12.Nd2 Bg4 13.Qb2 0-0 14.Bg4–/+; 12.c3 Nbd7 13.Nd2 0-0 14.Qb2–/+; 12.Qd2 Bg4 13.f3 Bf5 14.Nc3–/+) 12...Bg4 13.Bg4 Ng4 14.h3–/+; C) 11...0-0 12.Qb2 (12.Nd2 Bg4 13.Bg4 Ng4 14.Qd1–/+; 12.c3 Be6 13.h3 Nbd7 14.Qb2–/+; 12.Qd2 Bg4 13.Bg4 Ng4 14.Qe2–/+; 12.Nc3 Bg4 13.a4 b4 14.Nb1–/+) 12...Bg4 13.Nd2 Be2 14.Ne2–/+; D) 11...Qc7 12.Qb2 (12.Nd2 0-0 13.Qb2 Be6 14.Qc3–/+; 12.Qd2 0-0 13.Qc3 Qe7 14.Qb2–/+; 12.Nc3 Qa5 13.Qd2 0-0 14.Nb1–/+; 12.c3 Nbd7 13.Nd2 0-0 14.Nh3+=) 12...Qa5 13.c3 Bg4 14.Bg4+=; E) 11...Bd7 12.Nd2 0-0 13.Qb2 Bg4 14.Bg4–/+; F) 11...Qe7 12.c3 (12.Qb2 0-0 13.Nc3 Nbd7 14.a4–/+; 12.Nd2 0-0 13.Qb2 Bg4 14.Bg4+=; 12.Nc3 Qb4 13.Qd2 Qa3 14.Rb1+=; 12.a3 0-0 13.Qb2 Bg4 14.Nc3–/+) 12...Bg4 13.Qd1 Be2 14.Ne2+=; G) 11...Bf5 12.c3 (12.Qd1 0-0 13.Nd2 Qa3 14.Qb1–/+) 12...0-0 13.Qc2 Bg4 14.a4–/+.

11.c3 A) 11...Be6 12.Qc2 (12.Qd1 0-0 13.a4 ba4 14.Ra4–/+; 12.Qb2 0-0 13.Nd2 Qa3 14.Qa3–/+; 12.Bd1 Nbd7 13.Ne2 Nb6 14.Qb2–/+; 12.a3 Nbd7 13.Bf1 Ra4 14.Ne2–/+) 12...Bg4 13.a4 0-0 14.Nd2+=; B) 11...Bd7 12.h3 (12.Qc2 0-0 13.a4 Qc7 14.Ra3–/+; 12.Qd1 Ra4 13.Qd2 Bg4 14.Bg4–/+; 12.Qb2 0-0 13.Nd2 Be6 14.Qb4–/+; 12.Bd1 Bg4 13.Bg4 Ng4 14.Qd1+=) 12...0-0 13.Bd1 Na6 14.Ne2+=; C) 11...0-0 12.Qd1 (12.Qc2 Bg4 13.a4 Nbd7 14.a5–/+; 12.Qb2 Bg4 13.Nd2 Be2 14.Ne2+=; 12.a4 Nbd7 13.a5 Qc7 14.Qa2–/+) 12...Ne8 13.a4 Qg6 14.g3+=; D) 11...Bf5 12.Bd1 (12.a4 Ra4 13.Ra4 ba4 14.Qa2–/+; 12.Qc2 0-0 13.h3 Nbd7 14.Nd2–/+) 12...0-0 13.Ne2 Nbd7 14.Ng3–/+.

11.Qc3 0-0 (11...Nbd7 12.a3 (12.Qb2 Nb6 13.c3 Bg4 14.Bg4–/+; 12.Nd2 Nb6 13.a3 0-0 14.h3–/+; 12.Qb3 Nb6 13.c3 Bg4 14.Nd2–/+; 12.Nh3 Nb6 13.Nf4 Bg4 14.Bg4–/+) 12...0-0 13.Nh3 Nb6 14.Nf4–/+; 11...Be6 12.Qb3 Nbd7 13.a4 ba4 14.Ra4–/+; 11...Bf5 12.Qb2 (12.Nd2 0-0 13.Nb3 Nbd7 14.Na5–/+; 12.h3 0-0 13.g4 Be6 14.Qb2–/+; 12.Qb3 Ra4 13.Nd2 0-0 14.h3–/+; 12.a3 0-0 13.Qb3 Na6 14.c3–/+) 12...Bg4 13.Bg4 Ng4 14.h3–/+) 12.Nd2 (12.Qb3 Ra4–/+ (12...Nbd7 13.Nh3 Nb6 14.Nf4–/+) 13.a3 Bf5 14.Nc3–/+; 12.h3 Nbd7 13.a3 Nb6 14.Nd2–/+; 12.Qb2 Bg4 13.Nd2 Be2 14.Ne2–/+; 12.a3 Be6 13.Nd2 Ra4 14.Nb3–/+) 12...Be6 13.Nb3 (13.Qb2 Nbd7 14.c3–/+) 13...Nbd7 (13...Qa3 14.Bf1–/+) 14.h4 (14.Nd2 Ra3 15.Qb2 Rfa8–/+; 14.Na5–/+) 14...Ra3 15.Nh3 (15.Qb2 Rfa8–+) 15...Bh3 (15...Rfa8 16.Qb2–+) 16.Rh3–/+ Rfa8 17.Kf1 (17.Qd2 Ra2 18.Ra2 Ra2–+) 17...Nb6 18.Rg3 (18.h5 Nc4–+) 18...Ra2 19.Ra2 Ra2 20.Kg1 (20.h5 Nfd7–+) 20...b4 21.Qd2 Na4 (21...Nfd7 22.Nc1 Ra1 23.c3–+) 22.Rg5 (22.h5 h6–+) 22...Nc3 23.Re5 (23.h5 h6 24.Rg3 Qe6–+) 23...c5! 24.Nc5 (24.Nc5 Nd7; 24.dc5 Ne2 (24...Qe5; 24...Nd7)) 24...Ra1 (worse is 24...Ne2 25.Qe2 Ra1 26.Kh2–/+) 25.Kh2 Nd7 (25...Ng4 26.Bg4 f6 27.Nd7–+) 26.Nd7 f6 (26...Ne2?? 27.Qb4 Qe5 28.Ne5+–) 27.Bg4 fe5 28.de5 (28.Ne5 h5! 29.Bh5 Qh6 30.Bf7 Kf8–+) 28...Qg6 (better is 28...Qe7!? 29.Qd4 Qh4 30.Bh3 Qf2 31.Qc5–+) 29.f3 h5 30.Bh3 Qa6 (30...Qa6 31.Qf2 Rf1–+) 0–1. Haznedaroglu,Kivanc (1990) – Ling,A J (2060), corr ICCF WSTT/3/06/3, 2006.

11.Nc3 A) 11...Ra3 12.Rb1 (12.Nb1 Ra8 13.c3 0-0 14.Qc2–/+; 12.f3 Nbd7 13.fe4 b4 14.e5–/+; 12.Rc1 b4 13.Nd1 Ra2 14.Rb1–/+) 12...0-0 13.Bb5 Rc3 14.Qc3+=; B) 11...Qa3 12.Rb1 (12.f3 Bf5 13.Rb1 0-0 14.Rb3–/+; 12.Rc1 0-0 13.Rb1 Bg4 14.Bg4–/+; 12.h3 0-0 13.Nb1 Qb2 14.Qc3–/+) 12...Ba6 13.Rb3 Qd6 14.f3+=; C) 11...Ba6 12.a4 (12.Nb1 0-0 13.a4 Nbd7 14.a5–/+; 12.Nd1 0-0 13.Rb1 Bc8 14.Rb2–/+; 12.a3 0-0 13.a4 b4 14.Nb1–/+) 12...b4 13.Nd1 Nbd7 14.a5+=; D) 11...Be6 12.a4 0-0 13.a5 Na6 14.Nb1–/+; E) 11...Bf5 12.a4 0-0 13.a5 Na6 14.Nd1+=; F) 11...Bg4 12.a4 0-0 13.Bg4 Ng4 14.h3–/+; G) 11...0-0 12.a4 Nbd7 13.a5 b4 14.Nb1–/+.

11.Qd1 Qb4 12.Qd2 (12.Nd2 0-0 13.Qc1 Ra3 14.Qb1–/+) 12...Qb2 13.Qc3 Ra2 14.Qb2+=.

11.Bd1 A) 11...0-0 12.Ne2 (12.c3 Nbd7 13.Ne2 Nb6 14.Bb3–/+) 12...Nbd7 13.Nf4 Rd8 14.Be2–/+; B) 11...Bg4 12.Bg4 (12.Ne2 0-0 13.Nf4 Bd1 14.Qd1–/+; 12.c3 Bd1 13.Qd1 Nbd7 14.Ne2–/+; 12.Nc3 Nbd7 13.Bg4 Ng4 14.Qd1–/+; 12.Be2 Be2 13.Ne2 Nbd7 14.Ng3–/+) 12...Ng4 13.Qd1 Nf6 14.Nd2–/+; C) 11...Nbd7 12.Ne2 (12.c3 0-0 13.Ne2 Nb6 14.Bb3–/+; 12.Be2 Nb6 13.Qc3 Be6 14.a3–/+; 12.Nc3 0-0 13.Be2 Nb6 14.Nb1–/+) 12...0-0 13.Ng3 Nb6 14.Be2–/+.

11.Bf1 A) 11...Bf5 12.c3 (12.Nc3 0-0 13.a4 ba4 14.Na4–/+; 12.Ne2 Nbd7 13.Ng3 Bg4 14.Be2–/+; 12.h3 0-0 13.g4 Be6 14.g5–/+) 12...Be6 13.Ne2 0-0 14.Ng3–/+; B) 11...Bg4 12.Nc3 (12.h3 Bf5 13.Be2 0-0 14.Nc3–/+; 12.Ne2 0-0 13.Nf4 Nbd7 14.h3–/+) 12...Qa3 13.h3 Be6 14.Nge2–/+; C) 11...0-0 12.Ne2 (12.c3 Bg4 13.Ne2 Na6 14.Nf4–/+) 12...Nbd7 13.Ng3 Nb6 14.Be2–/+.

11.h3 Nbd7 (11...0-0 12.Nc3 Nbd7 13.a4 Ba6 14.ab5+=) 12.c3 (12.Qc3 0-0 13.Qb2 Nb6 14.c3–/+; 12.Qc1 Nb6 13.Nd2 0-0 14.Nb3–/+; 12.Qd1 Qb4 13.Nd2 0-0 14.a3–/+; 12.Nc3 Qa3 13.Rb1 0-0 14.Rb3–/+) 12...Nb6 13.a3 Ng8 14.Ra2–/+.

5.Be2 0-0

6.a4 c6 7.Ba3 Be6 8.Bd6 Qd6 9.h3 (9.Nf3 a6 10.bc6 Nc6+=) 9...Nbd7 10.Nf3 c5 11.d3 h6 12.0-0 Nh7 (12...d4 13.c4+=) 13.Nbd2 f5 14.c4 d4 15.e4 (15.a5 e4 16.Ne1 Nhf6=) 15...f4 (15...Nhf6 16.a5+=) 16.Nh2 (16.a5 a6=) 16...Nhf6 17.Ng4 (17.a5 b6+=) 17...Ng4 (17...a6 18.ba6 Ra6 19.Nf6 Nf6 20.Qb3+=) 18.Bg4= Nf6 19.Be6 Qe6 20.Kh2 g5 21.g4 (21.a5 g4=) 21...Kg7 (21...fg3 22.fg3 g4 23.h4+=) 22.Kg2 (22.a5 Rh8 23.Nf3 Kg6=) 22...Rh8 23.f3 (23.Nf3 Kg6=) 23...h5 24.Qe2 Rh6 25.Rg1 Rah8 26.Kf1 (better is 26.Rh1!?–/+) 26...hg4–+ 27.hg4 (better is 27.fg4 Rh3 28.Nf3–+) 27...Rh4 (better is 27...Rh2!? 28.Qd1 Nh5–+) 28.Nb3 Nd7 29.a5 Qh6 (29...a6 30.b6–/+) 30.Ke1+= Rh2 31.Rg2 Qh4 32.Kd2 Rh1 33.Rag1 Kf6 34.Qf1 Rh3 35.Ke2 Ke6 36.Qf2 Qh7 37.Ra1 Kd6 38.a6 (38.Qe1 Qh4–/+) 38...b6 39.Rag1 Nf8 40.Nd2 Ng6 41.Kd1 Qg7 42.Qe2 R8h7 43.Rf2 Qh8 44.Kc2 Rh1 (44...Kc7 45.Ra1–/+) 45.Rgf1 (45.Rh1 Rh1 46.Nf1 Qh3+=) 45...R7h3 (45...R1h4!?–/+) 46.Rh1+= Rh1 47.Nf1 Qh3 48.Kd2 Nh4 49.Kc2 Rg1 50.Kd2? (50.Kc1!?–/+) 50...Ng2 (better is 50...Rg3–+) 51.Kd1?? (better is 51.Kc2–+) 51...Ne3 52.Ke1 Qh1 53.Kd2 Nf1 54.Kc2 Ne3 55.Kb3 Rb1 56.Ka4 Ra1 57.Kb3 (57.Qa2 Qb1 58.Rb2 Ra2 59.Ra2 Qa2) 57...Qb1 58.Qb2 Qd1 (58...Qd3 59.Qc3 Qc3) 59.Rc2 (59.Qc2 Nc2 60.Rc2 Qd3 61.Rc3 Qc3) 59...Nc2 (59...Qd3 60.Qc3 dc3 61.Rd2 cd2 62.Kb2 Qa3) 60.Qc2–+ Qc2 (60...Rb1 61.Ka3 Qe1 62.Ka2 Ra1 63.Kb2 Ra5 64.Qb3 Qa1 65.Kc2 Ra2 66.Qa2 Qa2 67.Kc1 Qf2 68.Kd1 Qf3 69.Kd2 Qf2 70.Kc1 Qe2 71.Kb1 f3 72.Kc1 f2 73.Kb1 f1Q) 61.Kc2 Rf1 (61...Rf1 62.Kb3 Rf3 63.Kb2 Re3 64.Kb1 f3 65.Kc1 Re2 66.Kd1 Ke6 67.Kc1 f2 68.Kd1 f1Q) 0–1. Saarenpaa,Toivo – Helander,Olli, FIN–chT2, 2005.

6.c4 a6 7.a4 (7.d4 ed4 8.Qd4 dc4 9.Bc4 ab5 10.Bb5 c5–/+) 7...ab5–/+ 8.ab5 Ra1 9.Ba1 dc4 10.Bc4 Nbd7 11.Nf3 (11.d4 e4–/+) 11...e4 12.Nd4 Ne5 13.Be2 Bg4 (13...c5 14.bc6 bc6 15.f4 ef3 16.Nf3 Nf3 17.Bf3+=) 14.0-0 Qd7 15.f3 ef3 16.Nf3 Bf3 17.gf3 Qf5 (17...Ra8 18.Bd4+=) 18.Bd4 (18.f4 Ned7+=) 18...Ra8 (18...c5 19.bc6 Nc6 20.Bc3+=) 19.f4 Ned7 20.Nc3 Bc5 21.Bc5 (21.Bf6 Nf6 (worse is 21...gf6 22.Bf3+/–) 22.d4 Bd6+=) 21...Nc5 22.Bf3 Qg6 (22...Re8 23.Qe2+=) 23.Kh1= Qd3 24.Be2 (24.Qe2 Qe2 25.Be2 Ra3=) 24...Qf5+= 25.d4 (25.Qb1 Qh3+=) 25...Nce4 26.Bd3 Ra3 27.Ne4 Ne4 28.Be4 Qe4 29.Qf3 Qf3 (worse is 29...Qe3 30.Qe3 Re3 31.Rc1=) 30.Rf3 Rb3 31.Kg2 Rb5 32.Rf2 (32.e4 Kf8+=) 32...f5 33.Rc2 c6 34.Ra2 Kf7 35.Ra8 (35.Ra7 Ke6–/+) 35...Rb2 36.Kg3 Kf6 (36...Re2 37.Ra3–/+) 37.Rf8 Kg6 38.h3 h6 39.Kf3 Rb5 40.Re8 Kh5 41.Kg3 (41.Rg8 g5–/+) 41...g6 (41...Rb3 42.Re7–/+) 42.Re6 Rb3 43.Kf3 Rc3 44.Re7 b5 45.Rb7 g5 46.Rf7 (46.Rb8 c5 47.Ke2 gf4 48.dc5 fe3 (worse is 48...Rc5 49.ef4 Kh4 50.Re8–+) 49.Rb5 Kh4–+) 46...g4 47.hg4 fg4 48.Ke2 Kh4 49.Rg7 b4 50.f5 (50.Rb7 Rc2 51.Kd3 Rc1–+) 50...b3 51.f6 (51.Kd2 Rc2 52.Kd3 Rc1–+) 51...Rc2 52.Kd1 (52.Kd3 Rf2 53.Kc3 Rf6 54.Kb3 g3–+) 52...Rf2 53.Kc1 Rf6 (53...Rf6 54.Kb2 g3–+) 0–1. Buczinski,Henryk – Preuss,Guenter, corr 3GMM–34, 1997.

6.c4 dc4 7.Bc4 a6 8.Nc3–/+.

6.d3 Nbd7 7.Nd2 Qe7 8.Ngf3 e4 9.Nd4 Ne5 10.N4b3 Re8 11.d4 Ng6 12.c4 Nf4 (better is 12...Bb4=) 13.ef4+/– e3 14.0-0?? (better is 14.fe3 Qe3 15.Bc1+/–) 14...ed2–/+ 15.Bf3 Bf4 16.Nd2 Qb4 17.Bc1 Bf5 (17...dc4 18.Rb1 Qc3 19.Nc4 Bh2 20.Kh2 Qc4 21.Bf4–/+) 18.Nb3=+ Bc1 19.Rc1 dc4 20.Nc5 Ne4 (20...Qb5?! 21.Bb7 Rad8 22.Qf3=) 21.a3 Qa3 (21...Qb5 22.a4 Qa5 23.Rc4–/+) 22.Nb7 Rab8 (22...Nc3 23.Qd2 Nb5 24.Bc6=+) 23.Be4=+ Be4 24.Nc5 Bd3 25.Qf3 Rb5 26.Rc4 (26.Rfd1!? Qa5 27.Nd3 cd3 28.Qd3–/+) 26...Bf1–+ 27.Qa3 Bc4 28.h3 a6 29.Qg3 c6 30.h4 (30.Qc7 Rb1 31.Kh2 Bb5–/+) 30...a5–+ 31.h5 h6 32.f4 (better is 32.Kh2–+) 32...Bd5 33.Nd7 Rb1 34.Kh2 Ree1 35.Qg4 (35.Qf2 Rh1 36.Kg3 Rb3 37.Kg4 Be6 38.f5 Bd7–+) 35...Rh1 36.Kg3 Rb3 37.Kf2 Rb2 38.Kg3 Rg2 0–1. Bjelstrand,Kim – Fries Nielsen,Jens Ove (2300), DEN–chJ int Ribe, 1978.

6.Nf3 e4 7.Nd4 c5 8.bc6 bc6=+.

6.Nf3 e4 7.Nd4 c5 8.bc6 Nc6 9.Nb3 Be6 10.Nd4 a6 11.Nc6 (11.0-0 Nd4 12.Bd4 Qc7=+) 11...bc6–/+ Black creates threats along the open b–file 12.Ba3 c5 13.Bb2 (13.d4 ed3 14.cd3 Rb8–/+) 13...Rb8 Black gets the initiative 14.Ba3 (14.Bc3 Bc7 15.a3 Rb6–/+) 14...d4 15.ed4 cd4 16.Bd6 Qd6 17.0-0 Rfc8 18.Re1 (better 18.d3 Rb2 19.de4 Rcc2 20.Bf3 Ba2 21.Qe1–+) 18...Rb2 19.c3 (19.d3 e3 (19...Rbc2?! 20.Nd2–+) 20.f3 Ba2–+) 19...d3 20.Bf1 Ng4 (20...Ra2?! 21.Ra2 Ba2 22.Qa4–+) 21.g3 Qb6 22.Re3 Ne3 (22...Rb8 23.Na3 Ne3 24.de3 Ba2 25.Bg2–+) 23.fe3 (23.de3 Rc2 24.Nd2 f5–+) 23...Rb8 24.Na3 (24.Qa4 Bd5 25.c4 Bc6–+) 24...Qc5 (24...Qa5!? 25.Bg2 f5 26.Bh3–+) 25.Qa4 Rd2 26.Nb1 (26.Qe4 Qa3 27.Bd3–+) 26…Qe3 (26...Qe3 27.Kh1 Qf3 28.Kg1 Qf2 29.Kh1 Qf1) 0–1. petrobbo (2020) – ceykaous (2200), ChessWorld.net, 2013.

6.Nf3 Re8 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 e4 11.Ne1 c5 12.bc6 (12.f3 Nbd7+=) 12...bc6 13.f4 (13.f3 Nbd7+=) 13...Na6 (13...Bc5 14.Be5 Nbd7 15.Bb2+=) 14.g3 (14.Nc3 Nc5+=) 14...Nc5 (14...Nb4 15.Nc3–/+) 15.Ng2 (15.Bd4 Bh3 16.Ng2 Qe7–/+) 15...Bh3 (15...Ba6 16.Ba6 Na6 17.Bd4–/+) 16.Rf2 (16.Bd4 Qe7–/+) 16...Qe7 17.Bd4 Ne6 18.Bc3 Ra8 19.d4 (19.f5 Ng5–/+) 19...Qa7 (19...Nc7 20.Nd2–/+) 20.Nd2 Qb6 21.Nb3 Ra2 22.Qb1 Qa7 23.Bf1 (23.Nc1 Ra4–/+) 23...Ng4 24.Re2 Be7 25.Ne1 (25.Qe1!?–/+) 25...Bf1–+ 26.Kf1 Qa6 27.h3 (27.Nc1 Nh2 28.Kg2+=) 27...Ne3 28.Kf2 Nf5 29.Ng2 Ng3! 30.Re1 (30.Kg3 Qe2) 30...Nf5 31.Nc1 (31.Kg1 Qa4–+) 31...Ra3 (31...Ra4 32.Qb8 Bf8 33.Nb3–+) 32.Ne2 (32.Qb8 Bf8 33.Nb3 Qc4–+) 32...Qc4 (32...Qa7 33.Qb2–+) 33.Qb2 Ra2 34.Qb8 Bf8 35.Rc1 (35.Qe5 g6–+) 35...Ned4 36.Bd4 Nd4 37.Nd4 Qd4 38.Kf1 (38.Kg3 Qd2 39.Qb3 Ra3 40.Qa3 Ba3–+) 38...Qd2 39.Qb1 Ra3 (39...Ra3 40.c3 Ra2 41.Qa2 Qa2–+) 0–1. Frenzel,Lothar – Minge,Bjorn, corr ICCF cp, 1994.

6.h4 a6 7.Nf3 Nbd7 8.Nc3–/+.

6.h4 Be6 7.h5 (7.Nf3 Nbd7=+) 7...c6 (7...h6 8.Nf3 Nbd7 9.0-0–/+) 8.h6 (8.Nf3 Qc7=+) 8...g6 9.Nf3 cb5 (9...Qc7 10.Nc3=+) 10.Be5 (10.Ne5 Ne4=) 10...Be5 11.Ne5 d4 (better is 11...Nc6 12.Nf3 a6=) 12.e4? (better is 12.Nf3!? de3 13.fe3=) 12...Ne4–/+ 13.Bb5?? (better is 13.0-0–/+) 13...Qd5–+ 14.Bc4 (14.Nd3 Qb5 15.0-0 Qg5–+) 14...Qe5 15.Be6 (15.0-0 Bc4 16.d3–+) 15...Ng3 16.Qe2 0–1. manofsteel5 – designs, Live Game Caissa's Web, 2005.

6.Nf3 Nbd7

7.c4 e4

8.Nd4 dc4 9.Na3=+ a6 10.ba6 Ra6 11.Nc4 Bc5 12.0-0 Bd4 13.Bd4=.

8.Nd4 dc4 9.Na3=+ Be7 10.Nc4 a6 11.ba6 Ra6 12.0-0 c6 13.a4=.

8.Nd4 Nc5 9.0-0 a6 10.ba6 Ra6 11.Qc2 Rb6 12.Nb3 Na4 13.Ba3=+.

8.Nd4 Nc5 9.0-0 dc4 10.f3 Nd3 11.Ba3 Be5 12.Bf8 Kf8 13.Bd3–/+.

8.Nd4 Nc5 9.Qc2 dc4 10.Bc4 a6 11.ba6 Na6. secgestor – LyleCherner, internet, 2007.

8.Nd4 Nc5 9.cd5 Nd5 10.0-0 Qh4 11.f4 Rd8 12.Nb3 Bf5 13.Nd4=+.

5.Nf3 0-0

6.c4 e4–/+ 7.Nd4 c5 8.Nb3 Be6 9.cd5 Bd5 10.Bf6 Qf6= (< 10...gf6 11.Nc3 Bb3 12.Qg4 Kh8 13.ab3+=).

6.c4 e4–/+ 7.Nd4 Bg4 8.Be2 Be2 9.Qe2 Nbd7 10.0-0 Ne5 11.cd5 Nd3 12.Bc3 Nd5 13.f4? a6 (13...Qd7 14.Qh5 f5 15.Qh4-+) 14.a4 (14.Nf5!? Nf6 15.Ng3=+) 14...ab5 (14...Qd7 15.Qh5 f5 16.ba6 Ra6 17.Qd1-+) 15.ab5 Ra1 (worse 15...Nc3 16.Nc3 Ra1 17.Ra1 Bf4 18.Ne4 Bh2 19.Kh1=+) 16.Ba1 Qa8 (16...Qf6 17.Qh5 N5f4 18.ef4-/+) 17.Nc3=+ Nc3 18.Bc3 Qa2 (18...g6 19.f5=+) 19.f5 (19.Qg4 Bb4 20.Ra1 Qc4+=) 19...f6 (better 19...Qd5!?=) 20.Ne6+/- Rf7 21.Nd8 (21.Ra1 Qb3+/-) 21...Qd5 (better 21...Re7=) 22.Nf7+/- Kf7 23.Qh5 Kg8 24.Qe8 Bf8 25.Qe6 (better 25.g4!?+-) 25...Qe6+/- 26.fe6 Bd6 27.Ra1 Kf8 28.Ra7 (28.Ra4 Nc5 29.Rd4 f5+-) 28...Ke7 (28...b6 29.Bd4+/-) 29.Rb7+- Ke6 30.b6 (30.Ra7!?+-) 30...cb6+/- 31.Rb6 Kd5 (better 31...h5!?+=) 32.Rb7+- Be5? (better 32...g6+-) 33.Be5 Ne5 34.Rg7 1-0. banjoband (2115) - _coco_ (1955), Rated Blitz game, lichess.org, 2014.

6.c4 e4–/+ 7.Ne5 Re8 8.f4 ef3 (8...Nbd7 9.Nd7 Bd7 10.Qc2–/+) 9.Nf3 Ng4 (9...Bg4 10.Be2–/+) 10.Qb3 (10.Qc2 dc4 11.Bc4 Nh2 12.Nh2 Qh4 13.Kf1 Be6= (13...Bh2? 14.Qc3 Re5 15.Rh2 Rf5 16.Ke2 Qg4 17.Ke1+–)) 10...Bh2–/+ (11.Nh2 Qh4 12.Ke2 Qf2 13.Kd1 Nh2–/+) 0–1. Bivens,William – Hanison,Bernard, corr ICCF TT–4–90, 1993.

6.Be5!? Bg4 7.Bd6 Qd6 8.h3+=.

6.Ne5 Be5 7.Be5 c6 8.Bd3 Nbd7 9.Bd6 Re8 10.0-0 (10.bc6 bc6 11.0-0 Ne4+=) 10...Nb6 (10...cb5 11.Bb5 Qb6 12.Bd7 Bd7 13.Bf4=) 11.Bf4+– Nc4 12.a4 (12.Bc4 dc4 13.bc6 bc6+–) 12...Nb2+= 13.Qe2 Nd3 14.Qd3 Be6 (14...Nh5 15.Bg3+=) 15.Bg5+– h6 16.Bh4 Qa5 (16...c5!?+–) 17.Bf6+– gf6 18.Nc3 cb5 (18...a6 19.bc6 bc6 20.Rab1+–) 19.ab5 Qd8 20.Ra4 f5 21.Rfa1 Kh7 (21...a5 22.ba6 ba6 23.Ra6 Ra6 24.Qa6+–) 22.Ra7 Ra7 23.Ra7 Qb8 24.b6 (better 24.Qd4 Rc8+–) 24...Re7 (24...Qd6 25.Qd4 Qc6+–) 25.Nd5 Bd5 26.Qf5 Kg7 (26...Kg8 27.Qd5 Qc8 28.c3+–) 27.Qd5 Re6 (27...Qc8 28.c4+–) 28.Rb7 Qe8 29.Qd4 Rf6 30.Ra7 (better 30.Rd7 Qe6 31.b7 Qb6 32.Qg4 Rg6 33.Rf7 Kf7 34.Qf4 Rf6+–) 30...Qb5 Threatening mate... how? 31.Ra1 Kh7 (31...Qb6 32.Qb6 Rb6+–) 32.Qf6 (32.Qf6 Qd5 33.Ra7 Kg8 34.c4 Qb7 35.Rb7 Kh7 36.Rf7 Kg8 37.Qg7) 1–0. GuestDGJF – GuestZJPR, freechess.org, 2020.

5.Nf3 e4

6.Nd4 c6 7.a4 0-0 8.Be2 c5 9.Nb3 b6 10.c4 Be6 (better is 10...dc4!? 11.Bc4 Nbd7–/+) 11.Bf6= Qf6 (worse is 11...gf6 12.cd5 Bd5 13.Nc3+/–) 12.cd5 Bd5 13.Nc3 Be6 (better is 13...Bb7+=) 14.Ne4+/– Qe7 15.Nd6 Qd6 16.d4 cd4 (16...Nd7 17.dc5 Qe5 18.0-0 Bb3 19.Qb3 Nc5 20.Qb4+/–) 17.Nd4 Re8? (better is 17...Qb4 18.Qd2 Qd2 19.Kd2 Nd7+/–) 18.Ne6+– Qe6 19.Bf3 Qc4 (19...Nd7 20.Ba8 Ra8+–) 20.Ba8 Qb4 (20...Qc3 21.Ke2+–) 21.Qd2 Qd2 22.Kd2 Rd8 (22...Nd7 23.Bc6 Rd8 24.a5+–) 23.Ke2 Nd7 (23...Kf8 24.Rhd1 Ke7 25.Rd8 Kd8 26.a5+–) 24.Rhd1 Kf8 25.Rac1 Ke7 26.Rc7 1–0. pierre – anony, internet, 2015.

6.Nd4 c6 7.a4 c5 8.Nb3 c4 9.Nd4 Be5 10.Be2 a6 11.Nc3 0-0 12.d3 cd3 13.cd3 ed3 (13...Bd7 14.de4 de4 15.0-0=) 14.Qd3 Bd4 (14...Nbd7!?=) 15.Qd4+/– (15.ed4?! ab5 16.ab5 Ra1 17.Ba1 Bg4=) 15...Nbd7? (better is 15...ab5!? 16.ab5 Ra1 17.Ba1 Be6+/–) 16.Nd5+– Qa5 17.Bc3 Qd8 18.0-0 ab5 (18...Kh8 19.Rfd1 Rg8 20.ba6 ba6 21.Nf6 Qf6 22.Qd5 Qc3 23.Qa8+–) 19.ab5 Ra1 20.Ra1 Re8 21.Ra8 Nb6 (21...h5+–) 22.Nb6 (22.Qb6?! Nd5 23.Qd8 Rd8+–) 22...Qd4 23.Bd4 Nd7 (23...Be6 24.Ra7 Nd5+–) 24.Rc8 Rc8 25.Nc8 f6 26.Bc4 Kf8 27.Bd5 Ne5 28.Be5 fe5 29.Bb7 Ke8 1–0. GuestYPNB – GuestPPQV, freechess.org, 2017.

6.Nd4 c6 7.a4 c5 8.Nb3 Be6 (8...c4 9.Nd4=+) 9.Be2 b6 (9...Nbd7 10.a5=+) 10.0-0 (10.a5 Nbd7=) 10...0-0 11.d3 (11.a5 ba5 12.Na5 Nbd7=) 11...Be7 (11...a6 12.de4 Ne4 13.N1d2=+) 12.N1d2 (12.de4 Ne4 13.f3 Nf6=) 12...Nbd7 (12...ed3 13.cd3 (13.Bd3? c4–+) 13...a6 14.ba6 Na6 15.Re1=) 13.f3 (13.de4 de4 14.a5 Qc7=) 13...ef3 (13...ed3 14.cd3 (14.Bd3? c4–+) 14...a6 15.f4=) 14.Bf3 (14.Nf3 a6=) 14...Rc8 (14...Bd6 15.c4=) 15.c4 h6 (15...h6 16.a5 Re8+=; better is 15...Bd6=) 16.Qe2 Re8 17.a5 Nf8 18.ab6 ab6 19.e4 d4 20.Rf2 Ng6 21.Nf1 Qd7 22.Ng3 Bg4 23.Ra6 Rb8 24.Bc1 Bd6 25.Bg4 Qg4 26.Qg4 Ng4 27.Rf1 Bg3 28.hg3 Rb7 29.Nd2 (29.Bf4 N6e5 30.Be5 Ne5+=) 29...N4e5 (29...N6e5!? 30.Rf3 Nf3 31.gf3 Ne5–+) 30.Ra3+= Rbb8 31.Nf3 (31.Bb2 Ra8 32.Rfa1 Ra3 33.Ra3 Kh7+=) 31...Ra8–/+ 32.Kf2? (better is 32.Rb3–/+) 32...Ra3–+ 33.Ba3 Nd3 34.Ke2 Nde5 35.Nd2 Ra8 36.Bc1 (36.Ra1 f6–+) 36...Ra4 37.Rf5 Nc4 38.Rd5 Nd2 (38...Ra2 39.Rh5–+) 39.Bd2 Ra3 (39...Ra2 40.Rd6 Ne5 41.Ke1–+) 40.Rd6 Rg3 41.Kf2 Rb3 42.Rb6 c4 0–1. Acevedo,Daiana – Diaz,Genara, Pan American–ch U14 Girls, 2001.

6.Nd4 c6 7.bc6 bc6 8.Be2 0-0=+.

6.Nd4 Bd7 7.Nc3 c5 8.bc6 Nc6 9.Rb1 (9.Ncb5 Be7=+) 9...0-0 (9...Nd4 10.ed4 0-0 11.Nb5–/+) 10.Be2 (10.Ncb5!? Be7 11.Ne2=+) 10...Nd4–/+ 11.ed4 a6 12.0-0 Bc6 13.d3 e3 (13...Qc7!?–/+) 14.fe3=+ Qc7 15.g3 Bg3 16.Bg4 (better is 16.hg3 Qg3 17.Kh1 Qh3 18.Kg1 Qg3 19.Kh1 Qh3 20.Kg1 Qg3=) 16...Bh2–/+ 17.Kh1 Qg3 18.Qf3? (better is 18.Rf3 Qg4 19.Kh2–+) 18...Ng4 (18...Qg4?! 19.Kh2 Rfe8 20.Bc1–+) 19.Qg3 Bg3 20.Ne2 Nf2 21.Kg2 Bh4 22.Ba3 Rfe8 23.Rf2 Bf2 24.Kf2 g5 25.Rg1 f6 26.Ng3 Kg7 27.Nf5 Kg6 28.Nd6 Re6 29.c4 Rd8 30.e4 Red6 31.Bd6 Rd6 32.cd5 Bd5 33.ed5 Rd5 (34.Rb1 b5–+) 0–1. beyonze1 – luckyman6, Live Game Caissa's Web, 2004.

6.Nd4 Be5 7.Be2=+.

6.Ng5 0-0 7.d3 h6 8.Nh3 a6 9.d4 (9.Nf4!?–/+) 9...ab5 10.Bb5 Ng4 (10...Bh3 11.gh3 Nbd7 12.f4–+) 11.a4 (11.Nf4 Qg5 12.Qd2 Nf6–/+) 11...Qh4 (11...Bh2?! 12.g3+=) 12.Qc1 Nc6 13.Bc6 bc6 14.Nc3 f5 (14...Bh2 15.Ne2–/+) 15.Ne2 g5 16.g3?? (better is 16.c4+=) 16...Qh3–+ 17.Ba3 (17.Kd2 Nh2 18.Qe1 f4–+) 17...Qg2 18.Kd2 Nh2 19.Bd6 (19.Kc3 Ra4 20.Bd6 Ra1 (20...cd6?! 21.Ra4 Qf2 22.Qg1 Qg1 23.Rg1–/+) 21.Qa1 cd6–+) 19...cd6 20.Rh2 (20.Kc3 Qf2 21.Qg1 Qe2 22.Rh2 Qc4 23.Kd2 Qb4 24.Kc1 Rf6–+) 20...Qh2 21.Qh1 Qh1 22.Rh1 Kg7 23.Ra1 Kg6 24.a5 Ba6 25.Ke1 (25.Ng1 Rfb8–+) 25...Be2 26.Ke2 Rfb8 27.a6 Ra7 28.Ra2 Rb6 0–1. Tiedemann,Joern (2020) – Knoeppel,Bjoern (2125), RSS7E starter–25, 2011.

6.Nd4 0-0

7.c4 dc4 8.Bc4 Nbd7 9.f3 Nh5 (9...Ne5 10.Be2 a6 11.Nc3 ab5 12.Ncb5+=) 10.g3 (10.0-0 Ne5 11.Be2 ef3 12.Bf3 Nf6=) 10...Nb6 (10...Ne5!? 11.Be2 Nd3 12.Bd3 ed3+=) 11.Bb3= Bh3 (11...Be5 12.fe4 Nf6 13.Nc6 bc6 14.Be5 cb5 15.0-0 Ne4 16.Qc2=) 12.Qe2 (12.Nc3 Nf6 13.Ne4 Ne4 14.fe4 Qf6+=) 12...a6 (12...Bc5 13.fe4 g6 14.Qf3+=) 13.fe4 (13.Nc3 ef3 14.Qf3 Nf6 15.ba6 ba6=) 13...Qg5 (13...Nf6 14.ba6 Ra6 15.Nc3+=) 14.ba6 Qg6?? (better is 14...Ra6 15.Nf3 Qg6=) 15.ab7+– Qe4?? (15...Ra7 16.e5! Be5+–) 16.ba8Q (16.ba8R?? Qh1 17.Kf2 Qg2 18.Ke1 Qg1 19.Qf1 Qf1; 16.Qh5?? Qh1 17.Ke2 Qf1) 16...Na8 (16...Qa8 17.Rg1 (17.Qh5 Qh1 18.Ke2 Qf1) 17...Nf6 18.Qf3+–) 17.Rg1 (17.Qh5?? Qh1 18.Ke2 Qf1) 17...c5 (17...Qg6 18.Bc2 f5 19.Nc3+–) 18.Qf3 (better is 18.Qh5 cd4 19.Qh3 de3+–) 18...Qg6 (18...Qe5 19.Na3 Nb6 20.Ndb5 Qb2 21.Rb1+– (21.Nd6?! Qa1 22.Kf2 Qf6+–)) 19.Bc2 f5 (19...Qg4 20.Qg4 Bg4 21.Nf5 Bf5 22.Bf5+–) 20.Qd5 Kh8 21.Ne6 Nc7 (21...Re8 22.Qd6 Qe6 23.Qe6 Re6 24.Bf5 Bf5 25.Rf1+–) 22.Nf8 Bf8 23.Qc4 Nf6 (23...Qe8 24.Ba4 Qd8 25.Qf7+–) 24.Bf6 gf6 25.Bb3 (25.Nc3 Bg4+–) 25...f4 (25...Bd6 26.Qd3 Be5 27.Nc3+–) 26.Qf7 (26.Qf4!? Ne6 27.Qb8 Kg7+–) 26...Qf7 27.Bf7 f3 (27...fe3 28.de3 Bh6 29.Kf2+–) 28.Nc3 1–0. Leon Manas,Jose Francisco (1695) – Rodriguez Perez,David (2025), Championship de Canarias por Equ, 2011.

7.c4 c5 8.bc6 Nc6 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 Nd4 12.Bd4+=.

7.c4 c5 8.bc6 Nc6 9.cd5 Nd5 10.Nc6 bc6 11.Nc3 Rb8 12.Qc1 f5 13.Bc4 Be6 14.Nd5 cd5 15.Bb3 f4 16.ef4 Bf4 17.Qc3 Rf7 18.g3 Rc8 19.Qd4 Bg5 20.Qa4? (better is 20.Qe5 Rc6 21.Rb1–+) 20...Bd2! 21.Kd2 Rf2 22.Ke1 Rb2 23.Qd4 (23.Qb4 Qc7 24.Rd1–+) 23…Qa5 (23...Qa5 24.Kf1 Bh3 25.Kg1 Rg2 26.Kf1 Rf8 27.Qf6 Rf6) 0–1. Champion,William R (1840) – Steinman,Arthur, S70141 ICCF, 2007.

7.c4 Nbd7 8.cd5+= Nd5 9.Be2 (9.Nc3 Nc3 10.Bc3 Re8+=) 9...Nc5 (9...Qg5 10.g3–/+) 10.0-0 Qg5 11.f4 ef3 12.Nf3 Qh5 (12...Qg6 13.Nc3 Nc3 14.Bc3–/+) 13.Bd4 (13.Na3 Bd7+=) 13...Re8 (13...Ne4 14.Bc4 Be6 15.Bd5 Bd5 16.d3–/+) 14.Ne5 (14.g3!?–/+) 14...Qh6 15.Nf3 Bg4 (15...Ne4 16.Qb3 Be6 17.Bc4–+) 16.h3–/+ Be6 (16...Bf5 17.Na3 Bh3 18.Nc4 Bg2 19.Nd6 (19.Kg2?? Qg6 20.Kh1 Qh5 21.Kg2 Qg4 22.Kh1 Qh3 23.Kg1 Re6–+) 19...Qh1 20.Kf2 Bf1 21.Qf1 Qf1 22.Rf1 cd6 23.Kg1–+) 17.Bc4 (17.Na3!? Qg6 18.h4–/+) 17...Ne3?? (better is 17...Ne4–+) 18.Be3+– (18.Be3 Qg6 19.Be6 Qe6 20.Qc2+–) 1–0. DEFFM – kirtishu, freechess.org, 2018.

7.d3 c5–/+ 8.bc6 Nc6 9.Be2 (9.Nd2 Bd7–/+) 9...Qb6 10.Bc3 Be5 11.Nc6 Bc3 12.Nc3 Qc6 (12...bc6?! 13.0-0=) 13.Qd2 Be6 14.0-0 (14.a4!? Rfc8 15.Nb5 Qc2 16.Nd4–/+) 14...Rac8 15.Nd1 (15.Nb1–+) 15...Qc2 16.Qc2 Rc2 17.Re1 Rfc8 18.de4 (18.Rb1 b6–+) 18...de4 (18...Ne4?! 19.f3 Nc5 20.Bb5–+) 19.h3 (19.Rb1 R8c7 20.a4 Nd5–+) 19...Ra2 20.Ra2 0–1. Hovla1 – Prince W, ChessWorld.net, 2015.

7.Be2 a6 8.0-0 ab5 9.Nb5 Be7 10.d3 Na6 11.Nd2 Bf5 12.Nd4 Bg6 13.f4 ef3 14.Rf3 (worse is 14.N4f3 Ng4 15.Bd4 Bc5–+) 14...Ng4 15.Rh3 Ne5 16.Qf1 Qd7 17.N4b3 Bf6 18.d4 Ng4 19.c4 Bg5 Attacks the backward pawn on e3 20.Bg4 Qg4 21.Rg3 Qh5 22.cd5 Nb4 23.Rh3 Qg4 24.Rg3 Qh5 25.Rh3 Qg4 ½–½. Pcmvr – AdamPerring, playchess.de, 2005.

7.Be2 a6 8.0-0 c5 9.Nb3 ab5 10.Bb5 Ng4 11.g3 Nh2 (12.Kh2 Qh4 13.Kg1 Bg3 14.fg3 Qg3 15.Kh1 Bg4–/+; better is 11...Ne5!? 12.f4 Nf3 13.Rf3 Bg4–/+) 0–1. Neffgen,Dieter – Bock,Michael, R.–Tobies–Gedenkturnier–D, 2003.

7.Be2 a6 8.a4 Nbd7 9.0-0 Nc5 10.Nc3 Re8 11.f4 ef3 12.Bf3 (12.Nf3 ab5 13.ab5 Ra1 14.Ba1 Nce4=) 12...Be5+= 13.Nce2 Qd6 14.g3 Nce4 15.d3 Ng5 16.Nf4 (16.Bg2 Bg4+=) 16...Nf3 17.Qf3 ab5 (17...Bg4 18.Qf2–/+) 18.Nb5+= Qd8 19.Be5 Re5 20.Nc3 d5 draws heavy fire (20.Ng2 Qe7–/+) 20...c6 21.d4 Re7 22.Rab1 (22.Nh5 Nh5 23.Qh5 Qe8–/+) 22...h6 0–1. DEFFM – GuestDFGG, freechess.org, 2018.

7.Be2 c6 8.0-0 c5 9.Nb3 c4 10.Nd4 Bc5 (10...a6 11.a4=+) 11.d3 Bd4 (11...Qc7!?=) 12.Bd4+– cd3 13.cd3 b6 14.de4 Ne4 15.Nc3 Bb7 16.Bd3 Nc3 (16...Qg5 17.Rc1+–) 17.Qg4 Threatening mate: Qxg7 17...Ne2 (17...f6 18.Bc3 Qd7 19.Qh5+–) 18.Be2 f6 19.Bd3 Nd7 (better 19...Qd6+–) 20.Qe6 Kh8 21.Qh3 Threatening mate: Qxh7 21...Ne5?? (21...g6 22.Bg6 Qe7+–) 22.Qh7 1–0. GuestGRDT – Fullball, freechess.org, 2020.

7.Be2 Bd7 8.0-0 Be5 9.c4 (9.a4 a6=) 9...c5 (9...dc4!? 10.Bc4 a6=+) 10.bc6= Nc6?? (better is 10...bc6 11.Qc2 Na6 12.Nc6 Bh2 13.Kh2 Bc6=+) 11.Nc6+– (11...Bh2 12.Kh2 Bc6 13.c5+–) 1–0. Miraglia,Jorge – Bosman, email CTON, 1996.

7.Be2 c5

8.Nb3 a6 9.a4 Bd7 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Qc7 (12...c4 13.Nd4+=) 13.g3 (13.Bf6!? gf6 14.Kh1=) 13...Bh3 14.Re1 Nbd7 15.Bf1 Bg4 16.Be2 Be6 17.d3 Be5 (17...Ra8 18.Nc3–/+) 18.N1d2 Ba1 19.Qa1 Ne5 (19...Nb6!?+=) 20.de4= de4 21.c4 Rd8 (21...b6 22.Qb1 Bf5 23.f4 ef3 24.Qf5 fe2 25.Re2+=) 22.Bf1 (22.b6!? Qb8 23.Rd1=) 22...b6 23.h3 Qd7?? (23...Bf5 24.Bg2+=) 24.Kh2?? (better is 24.Qe5 Re8 25.Ne4 Bc4 26.Qf6 Re4 27.Qf3+–) 24...Nd3+= 25.Re2 h5 26.Bg2 Nb4 27.Qe5 Will e4 fall? 27...Bg4 28.f3 (28.hg4 Ng4 Double attack (28...Qe6 Decoy)) 28...ef3 29.Nf3 Re8 30.Qb2 Bf3 31.Bf3 Qd3 32.Qa3 (32.Nd2!? Re3 33.Re3 Qe3 34.Bg2–/+) 32...Nc2 33.Rd2?? (better is 33.Qb2 Ne3 34.Nc1 Qc4 35.Qa3–+) 33...Qd2!! 34.Nd2 Na3 35.e4 (35.Kg2 Re3 36.Kf2 Rd3–+) 35...Rd8 36.Nf1 Nc4 37.g4 Ne5 38.Bg2 (38.Kg2 c4 39.g5 c3–+) 38...hg4 0–1. Starr,Albert Martin – Livschitz,Louiza (1890), San Francisco MI Carroll Capps Mem, 2005.

8.Nb3 Nbd7 9.0-0 Qc7 10.g3 Be5 (10...Ne5 11.f4 ef3 12.Bf3–/+) 11.c3 (11.d4 ed3 12.Be5 Qe5 13.cd3 d4+=) 11...Ne8 12.f4 ef3 (12...Bf6!?–/+) 13.Bf3+= Ndf6 14.Kg2 Nd6 15.d4 Bg3 (15...Nc4 16.Qe2 Bd6+= (16...Nb2 17.de5 Qe5 18.Qb2+/–)) 16.hg3+/– c4 17.N3d2 Nb5 (17...Re8 18.Qe1+=) 18.a4 (18.e4!? de4 19.Ne4 Ne4 20.Be4+/–) 18...Nd6= 19.Ba3 Nf5 Exerts pressure on the isolated pawn (better is 19...Re8 20.Bd6 Qd6=) 20.Qe1–/+ Re8 21.e4 de4 22.Ne4 Ne4 23.Be4 Bd7 (better is 23...Re4 24.Qe4 Qg3 25.Kh1 Qh3 26.Kg1 Qf1 27.Kf1 Ng3 28.Ke1 Ne4–+) 24.Nd2+/– Nd6 (24...Nh6 25.Qf2 Rad8+/–) 25.Qf2 (25.Bd6 Qd6 26.Nc4 Bh3 27.Kh3 Qe6 28.Kg2 Qc4+–) 25...Be6? (better is 25...Bh3 26.Kh3 Ne4 27.Ne4 Re4+=) 26.Bb7?? (26.Qf4 Rad8 27.d5 f5 28.de6 fe4 29.Ne4 Re6 30.Bd6 Qc8+–) 26...Rab8?? (26...Nb7 27.Kg1–+) 27.Rab1?? (better is 27.Bf3!? Qd7 28.Bd6 Qd6 29.Ne4+–) 27...Qd7?? (better is 27...Nb7 28.Kg1 Qc6–+) 28.Bf3+– Bh3 29.Kh2 Bf1 30.Rf1 Rb6 (30...Re6 31.Bd6 Rd6 32.Nc4 Rh6 33.Kg1+/–) 31.Bg2 ½–½. Starr,Albert Martin – Krubnik,Ewelina (1750), San Francisco Stamer mem, 2005.

8.bc6 bc6 9.0-0 a5 10.f4 (10.Nc3 a4=) 10...Bd7 (10...Qb6 11.Ba3 Bb4 12.c3 Ba3 13.Na3=+) 11.c4 Qb6 (11...a4 12.a3=+) 12.Qb3= Qb3 (12...Qa7 13.Qc2=) 13.ab3 dc4 14.Bc4 Bb4 (14...Be7 15.d3=) 15.Nc2+= Bc5 (15...Be7!?+=) 16.b4!+– Bb6 (16...ab4 17.Ra8 Pinning (17.Ra8 Deflection); 16...Bb4 17.Nb4 Combination) 17.ba5 (17.Bf6 gf6 18.Nc3 f5+–) 17...Ra5+= 18.Bf6 gf6 19.Nc3 f5 20.Ra5 (20.Rfb1 Ra1 21.Na1 Bc5+=) 20...Ba5 21.Ra1 Bb6 (21...Bd8 22.d4+=) 22.Ra8+– Be6 (22...Bc5 23.Na4 Be7 24.d4+=) 23.Be6 fe6 24.Na4 Nd7 25.Nb6 Nb6 26.Ra6 Rb8 27.Nd4 Nc4 (better 27...Nd5!? 28.Ne6 Rb2+=) 28.Rc6+– (worse 28.Ne6 Rb1 29.Kf2 Rb2 30.Rc6 Nd2+–) 28...Nd2 (28...e5 29.Nf5 Nd2 30.Rc2 (30.fe5?! Rb1 31.Kf2 Rf1 32.Ke2 Rf5+–) 30...Rb1 31.Kf2+–) 29.Re6 (29.Ne6?! Rb1 30.Kf2 Rb2+–) 29...Nc4 (29...Rf8 30.Rc6+–) 30.Nf5 Rb5 (30...Rb1 31.Kf2 Rb2 32.Kg3 Nd2+–) 31.Re4 Nd2 (31...Rf5 32.Rc4 Rf7+–) 32.Re8 Kf7 33.Nd6 Kf6 34.Nb5 h5 (34...Nc4 35.e4+–) 35.Nd6 h4 (35...Nb3+–) 36.e4 h3 37.e5 Kg6 38.f5 Kg5 39.f6 Kg4 40.f7 Nf3 (40...Kf4 41.f8Q Ke3 42.Rd8 hg2 43.Qf2 Kd3 44.Nf5 Kc3 45.Qd4 Kc2 46.Qd2 Kb3 47.Rb8 Kc4 48.Qd4) 41.gf3 Kh4 (41...Kg5 42.Ne4 Kh6 43.f8Q Kg6 44.Qf6 Kh5 45.Qg5) 42.Rh8 Kg5 43.f8Q Kg6 44.Qf6 1–0. GuestZSCT – GuestDKMN, freechess.org, 2020.

8.bc6 Nc6

9.0-0 Qb6 10.Bc3 (10.Nb5 Be7 11.Bc3 Qd8=+) 10...Bd7 (10...Nd4 11.Bd4 Bc5 12.c3=+) 11.a4 (11.f3 Qc7 12.f4 Bc5 13.Nc6 Qc6=+) 11...Ne5 (11...Nd4!? 12.Bd4 Qc7 13.Bf6 gf6=+ (< 13...Bh2 14.Kh1+/–)) 12.a5 Qc7 13.Na3 (better is 13.a6=+) 13...Ng6 (13...Neg4 14.Ndb5 Bh2 15.Kh1–/+) 14.g3?? (better is 14.Ndb5 Qc6 15.Bf6 gf6 16.Nd6 Qd6 17.f3+=) 14...Bh3 15.Re1 a6 16.f4 ef3 17.Nf3? Bg3! 18.Be5?? Ne5–+ 19.Ne5 Be5 20.Bf3 Ba1 21.Qa1 Qa5 (22.Re2 Ne4–+) 0–1. brit2345 – Caissa, Live Game Caissa's Web, 2005.

9.0-0 Bd7 10.f3 Rc8 (10...Nd4 11.Bd4 Qc7 12.Bf6 Bh2 13.Kh1 gf6 14.Nc3+=) 11.Nc6 (11.fe4 de4 12.Nc6 Rc6 13.Bf6 gf6+=) 11...bc6 12.c4 (12.fe4 Ne4 (worse is 12...de4 13.Bf6 gf6 14.d3=) 13.Nc3 Qh4–/+) 12...Rb8 13.Qc2 Qe7 (13...Be6 14.fe4 Ne4 15.cd5–/+) 14.cd5 Rb2 15.Qb2 Decoy theme: b2 15...Rb8 (15...Be5 16.Nc3 Rb8 17.Qc2 cd5 18.Rab1+/–) 16.Qc2 (16.Qd4 Bc5 17.Qc3 cd5+=) 16...ef3 (16...Bh2!? 17.Kh2 Qe5 18.Kg1 Qa1 19.dc6 Bc8+=) 17.Bf3 (17.Rf3 Qe5 18.Rf6 Qh2 (18...Qa1? 19.Rd6 Rb1 20.Kf2+–; 18...Qf6?! 19.Nc3+=) 19.Kf2 Qh4 20.Kf1 Qf6 21.Kg1 Qa1–+) 17...Qe5 (17...cd5 18.Nc3 Qe5+/–) 18.Nc3 (18.dc6!? Qa1 19.cd7 Nd7 20.d4+/–) 18...Bf5 19.Qa4 (19.e4 Qh2 20.Kf2 Qg3 21.Ke2 Bg4 22.Bg4 Qg4 23.Kd3 Be5=) 19...Qh2 20.Kf2 Bd3 Threatening mate: Bg3 21.Ne2 Bb5 (21...cd5 22.Rh1 Qe5 23.Rac1+=) 22.Qa7+= Qh4 (22...Nd5 23.Bd5 cd5 24.Rh1+=) 23.g3 Ng4 (23...Qh2 24.Ke1 Be2 25.Be2 Qg3 26.Kd1 Qe5+=) 24.Bg4 (24.Ke1 Bg3 25.Kd1 Ba4 26.Kc1+=) 24...Qg4= 25.Nf4 (25.d3 Bd3 26.Kg1–+) 25...Bf1 (25...g5 26.Rg1 gf4 27.gf4+–) 26.Rf1 cd5 27.Qd4 Qg5 (27...Rb5 28.Kg2+=) 28.Nd5 Qg3 (28...Qg3 29.Ke2 Be5 30.Ne7 Kh8=). Van Rooijen,Peter (1715) – Sanmartino,Gianluca (1820), IEGC, 2003.

9.0-0 Bd7 10.f4 Rc8 11.a4 Re8 12.Nb3 Qe7 13.a5 a6 14.Nc3 Qd8 15.Qe1 Nb4 16.Qg3 Nc2 17.Nd5 Be7 18.Rab1 Be6 19.Ne7 Qe7 20.Nd4 Nd4 21.Bd4 (worse is 21.ed4 Rc2+=) 21...Bd5 22.Rb6 Bc6 23.Rc1 g6 24.f5 Nd5 25.Bc4 Red8 26.fg6 fg6 27.Qg4 Ra8 28.d3 (28.d3 Kf8 29.Rf1 Ke8 30.Bd5 Rd5 31.Bf6+–) 1–0. Rolly – HFlew, playchess.de, 2003.

9.0-0 Bd7 10.f4 ef3 11.Nf3= Re8 12.c4 dc4 13.Bc4 Rf8 (13...Na5 14.Be2 Rc8=+) 14.Ng5 (better 14.Bf6!? Qf6 15.Nc3=) 14...Bh2-/+ 15.Kh1 Be5 16.Qc2 Nb4 17.Qb3 Nfd5 (17...Bb2 18.Bf7 Kh8 19.Qb2-+) 18.Be5 (18.Bd5!? Qg5 19.Bf7 Kh8 20.Be5=+) 18...Qg5-/+ 19.Bd6 Qh6 20.Bh2 Be6 21.a3 Nb6 22.Be6 fe6 23.Nc3 N4d5 (23...Nc6 24.Na4 Na4 25.Qa4-/+) 24.Ne4 Qh5 25.Nd6 Qe2 26.Qd1 Qd3 27.Rf8 Rf8 28.Qg4 (28.Qg4 Rf6 29.Be5 Rh6 30.Kg1-/+). WG_ Anonymous – Anonymous, lichess.org, 2021.

6.Nd4 c5

7.Nb3 Bd7 (7...0-0 8.Be2=+) 8.c4 Be6 (8...dc4 9.Bc4 a6 10.Na3=) 9.Qc2 (9.Bf6 Qf6 (< 9...gf6 10.cd5 Bd5 11.Nc3 Bb3 12.Qb3+=) 10.Nc3 Nd7=) 9...b6 (9...Nbd7 10.cd5 Bd5 11.Nc3 Bb3 12.Qb3=) 10.Be2 (10.cd5 Bd5 11.Nc3 Bb7=) 10...Nbd7 (10...dc4 11.Bc4 Bc4 12.Qc4=) 11.0-0 (11.cd5 Bd5 12.Nc3 Bb7=) 11...Ne5 (11...dc4 12.Bc4 Bc4 13.Qc4=+) 12.cd5= Nd5 (12...Bd5 13.Nc3 Bb7 14.a3=) 13.a3 (13.Qe4 f5 14.Qa4 0-0+/–) 13...Rg8?? (13...Nf3 14.Bf3 ef3 15.g3=+) 14.Nc3 (14.Qe4 f5 15.Qc2 Qh4+/–) 14...Nf6 (better is 14...Nc3 15.Qc3 Qf6=+) 15.Ne4+/– Ne4 16.Qe4 Ng6 (16...f5 17.Qc2+/–) 17.Bc4 Kd7 18.Be6 fe6 19.Rfc1 (better is 19.d4 Rc8 20.dc5 bc5 21.Rad1+–) 19...Qg5?? (19...Qc7 20.f4+–) 20.f4 Qd5 21.Qd5 ed5+/– 22.a4 Ne7 23.g4 g6 24.Kf2 h5 25.h3 hg4 26.hg4 a6 27.d3 a5 28.Rh1 c4 29.dc4+– dc4 30.Nd4 Bb4 31.Rac1 Rac8 32.Bc3 Nd5 33.Bb4 ab4 34.Nf3 Rc5? 35.Rc4!! Rc4 36.Ne5 Ke6 37.Nc4 Ra8 38.e4 Nf4 39.Nb6 Nd3 40.Ke3 Rd8 41.Rd1 b3 42.Rd3 Rh8 43.Nc4 Rh3 44.Kd4 Rh4 45.Rb3 Rg4 46.b6 (46…Rh4 47.b7+–) 1–0. Istvanny (1660) – Rob (1605), internet, 2007.

7.bc6 bc6 8.Be2 0-0=+.

7.bc6 bc6 8.f4 ef3 9.Nf3 (9.Qf3? Bg4 10.Nc6 Qb6-+ (10...Bf3 11.Nd8 Kd8 12.Bf6 gf6 13.gf3+-; 10...Nc6?! 11.Bf6 Qf6 12.Qf6 gf6 13.Bb5-+)) 9...Ne4 (better 9...Bg4!?=+) 10.Bg7+= Rg8 11.Bb2 Bg4 12.d3 Bf3 (12...Qe7 13.Nbd2 Nc5 14.Bd4=) 13.Qf3+/- (13.gf3?? Qh4 14.Ke2 Qf2) 13...Qb6 14.Bd4 (14.de4? Qb2 15.Bd3 Qa1-+) 14...c5 (14...Qb4!? 15.Kd1 Bc5+/-) 15.de4+- cd4 16.Be2 Qb4 17.c3 (17.Nd2!? Qc3 18.0-0 Qe3 19.Kh1 Qf3 20.Bf3+/-) 17...Qb2= 18.0-0 Rg7 19.ed4 (19.e5 Bc7 20.e6 Kf8 21.Qd5 Qe2 22.ed4 Nc6 23.Qc6 Re8 24.ef7 Qf1 25.Kf1 Rf7 26.Qf3 Rf3 27.gf3 Bh2+-) 19...Qa1 (19...Nd7 20.e5 Be5 21.de5 Qa1 22.Qd5 Nb6+-) 20.Qf6+- Nd7 (20...Qa2 21.Bb5 (worse 21.Qg7 Qe2 22.Qf7 Kd8 23.Qd5 Kc7 24.Qa8 Bh2 25.Kh2 Qf1 26.Qa7 Kc8+-) 21...Nd7 22.Qg7+-) 21.Qg7 (21.Qd6?! Qa2 (21...de4? 22.Bb5 Rg2 23.Kh1+-) 22.Qd5 Rg2 23.Kg2 Qe2 24.Kg1 0-0-0 25.Qc6 Kb8 26.Qd6 Kb7+=) 21...0-0-0 22.Ba6 (22.ed5?! Qa2 23.Bd3 Qd5 24.Rf7 Qe6 25.Qh7 Qe3 26.Kh1 Rf8 27.Rf8 Nf8 28.Qf5 Kd8+-; worse 22.Qh7 Qa2 23.Bb5 Qb3 24.Bd7 Rd7 25.Qg8 Kc7+-; worse 22.Qf7 Rf8 23.Qd5 Rf1 24.Bf1 Qb1 25.Qd6 Qe4 26.Qa6 Kd8 27.Qa5 Ke7 28.Qg5 Ke8 29.Qg8 Ke7+-) 22...Kc7 23.e5 Be5 24.de5 Qa2 (24...Qb2 25.Qf7 Qb6 26.Kh1 Qa6 27.e6+-) 25.Bd3 Qb3 26.Qf7 (better 26.Qg3!? Qb6 27.Kh1 Kc8 28.Rf7 Qh6+-) 26...Qb6 27.Kh1 Rf8 28.Qh7 Rf1 29.Bf1 Qe6 (29...Qf2 30.Nd2! Qe1 31.Qf7 Qe5 32.Bb5+-) 30.Bb5 Kd8 31.Qh8 Kc7 32.Bd7 Kd7 33.Nd2 a5 34.Qh3 (better 34.Nb3 Qg4 35.Qh7 Ke8 36.Qd3+-) 34...Qh3 35.gh3 Ke6 (35...a4+-) 36.Nb3 Ke5 (36...a4 37.Nc5 Ke5 38.Na4+-) 37.Na5 Kf5 38.Nc6 Ke4 39.h4 Kf4 40.Nb4 (40.Nb4+-) 1-0. onur604 (2320) - cembu98 (2435), Casual Rapid game, lichess.org, 2021.

7.bc6 Nc6 8.Bb5 Bd7 9.a4 0-0 10.0-0 a6 11.Bc6 (11.Be2 Qe7=+) 11...bc6-/+ (11...Bc6?! 12.f3=) 12.h3 c5 13.Ne2 Rb8 14.Ba3 (14.Bc3 Ne8-/+) 14...Qe7 15.d4?? (better 15.Nbc3-/+) 15...ed3-+ (15...Ba4?! 16.Bc5 Bb5 17.Bd6 Qd6 18.Na3=+) 16.Nf4 Qe5 (better 16...Bf4!? 17.ef4 Ba4 18.Qd3-+) 17.c3 g5 18.Bc5 Bc5 19.Nd3 Qc7 20.Nd2 (20.Nc5 Qc5 21.Qd3 Qc4 22.Qc4 dc4-+) 20...Bd6 21.Nf3 h6 22.Qc2 (22.Nb4 Bb4 23.cb4 Rb4-+) 22...Ne4 23.Rfc1 Rfe8 (23...Rfc8 24.Qa2-+) 24.Nd4 Red8 (24...Rec8 25.Qd1-+) 25.a5 (25.f3 Nf6-+) 25...Rbc8 (25...Rdc8 26.Qd1-+) 26.Ne2 (26.Qd1 Nc3 27.Qh5 Kg7-+) 26...Bb5 27.Ne1 (27.Nd4 Bh2 28.Kf1-+) 27...Qc4 28.Nd4 (28.Ng3 Nc3 29.Qc3 Qc3 30.Rc3 Rc3-+) 28...Qc3 (28...Qf1) 29.Qc3 (29.Qd1 Qb2 30.Nec2 Nc3-+) 29...Rc3 (29...Nc3 30.Rc2-+) 30.Rc3 (30.Nb5 Rc1 31.Rc1 ab5-+) 30...Nc3 31.Nef3 f6 (31...Bd3 32.g4-+) 32.Nf5 Bf8 33.N3d4 Kf7 34.g4 Kg6 (34...Rb8 35.Kg2-+) 35.Kg2 Rc8 36.f4 (36.h4 Bd3-+) 36...Ne4 (36...Bd3 37.h4-+) 37.Kf3 (37.Nb5 ab5 38.a6 b4-+) 37...Nd2 38.Kf2 Ne4 39.Kf3 Nd2 40.Kf2 Ne4 (better 40...Bc4-+) 41.Kf3= ½-½. zembelek (2100) - tarn (2000), Rated Blitz game, lichess.org, 2013.

7.bc6 Nc6 8.c4 Nd4 9.Bd4 Be6 (9...dc4!? 10.Nc3 Bf5=) 10.cd5= Bd5 (10...Nd5 11.Bg7 Rg8 12.Bd4+=) 11.Nc3 (11.Bb5 Ke7+=) 11...Bc6= 12.Qb1 (12.Bb5 Bb5 13.Nb5 0-0=) 12...0-0 13.Be2 a6 (13...Re8 14.0-0=+) 14.h3 (14.0-0 Re8=) 14...Qc7 (14...Qe7 15.0-0=+) 15.0-0 (better 15.Bf6 gf6 16.Ne4=) 15...Nd7 (better 15...Bh2 16.Kh1 Be5=+) 16.Ne4+/- Be4 (16...Bh2 17.Kh1 Be5 18.Ng5+/-) 17.Qe4 Nc5 (17...Rfe8 18.Qd5 Ne5 19.Rfc1+/-) 18.Bc5+- Bc5 19.d4 (19.Rfc1 Qd6+-) 19...Be7 20.Rfc1 Qd7 21.Rab1 b5 22.Bd3 f5 23.Qc6 Qc6 24.Rc6 Rfc8 (24...g6 25.Rbc1+-) 25.Rc8 Rc8 26.Bf5 Rf8 (26...Rd8 27.Rc1 g6 28.Be6 Kf8 29.Rc7+-) 27.Be6 Kh8 28.f4 g6 29.Kf2 b4 (29...Kg7 30.Rc1+-) 30.Kf3 a5 (30...h6 31.g3+-) 31.e4 White intends f5 31...h6 (31...Rf6 32.Bb3+-) 32.g4 White prepares f5 32...Bg5 33.f5 gf5 (33...Rd8 34.d5+-) 34.gf5 Bd2 (34...Rd8 35.d5+-) 35.e5 Rd8 (35...a4 36.f6+-) 36.Ke4 White plans d5 36...Bc3 37.d5 Kg7 (37...a4 38.f6 Kh7 39.f7+-) 38.d6 (better 38.f6!? Kh7 39.Rg1 Rf8+-) 38...Kh7 39.Kd5 a4 40.f6 a3 (40...b3 41.a3+-) 41.Bf7 (41.f7 Bd2+-) 41...Rf8 (41...Bb2 42.Rf1 b3 43.e6 ba2 44.e7 Bf6 45.ed8Q Bd8 46.Ra1+-) 42.Ke6 (better 42.e6!? Bf6 43.e7 Ra8+-) 42...Be5 43.d7 (43.Ke5 Rf7 44.Ke6 Rf8+-) 43...Bc7 (43...Bc3 44.Rg1 b3 45.Rg8 Rf7 46.Kf7 Ba5 47.Rg7 Kh8 48.Kg6 b2 49.Rh7 Kg8 50.f7 Kf8 51.Kf6 Bd8 52.Ke6 Be7 53.d8Q Bd8 54.Rh8 Kg7 55.f8Q Kg6 56.Qh6) 44.Rb4 h5 (44...Ra8 45.Rg4 Ra6 46.Ke7 Bd6 47.Ke8 Bc7 48.Rg7 Kh8 49.Rg8 Kh7 50.Bg6 Kg8 51.f7 Kg7 52.f8Q Kg6 53.Qf7 Kg5 54.Qd5 Kf6 55.Qd4 Kf5 56.Qd3 Ke5 57.Qa6 Kd5+-) 45.Rb5 Kh6 (45...Rf7 46.Kf7 Kh6 47.Kg8 Ba5 48.f7 Bb4 49.d8Q Be7 50.Qb6 Bd6 51.Qd6) 46.Rh5 1-0. zembelek (2095) - uriel8 (1995), Rated Blitz game, lichess.org, 2013.

7.bc6 Nc6 8.Be2 0-0 9.c4 dc4 10.Bc4 Ng4 11.h3 (11.Nc6 bc6 12.Qc2 Rb8+=) 11...Qh4–/+ 12.Qe2?? (better is 12.0-0–/+) 12...Nf2!–+ 13.Rf1 (13.Qf2 Bg3 Decoy) 13...Nd3 14.Kd1 Nb2 (14...Nb2 15.Kc2 Nd4 16.ed4 Nc4 17.Qc4 Be6–+) 0–1. Thomsen,Jesper – Garau,Bernard, DEN–FRA, 2012.

7.bc6 Nc6 8.Be2 0-0 9.h3 Ne8 0–1. Naundorf,Maik – Schulz,Hans_Juergen, TSC, 2002.

5.Nf3 Bg4

6.c4 e4 7.h3 Be6 8.Nd4 Qe7 9.Ne6 fe6 10.Nc3 0-0 11.Be2 Nbd7 12.0-0 Ne5 13.d3 dc4 14.dc4 Rad8 15.Qa4 Bc5 16.Ne4 Ne4 17.Be5 Nf2 18.Rf2 Be3 19.Raf1 Qh4 20.Bf3 Rd2 21.Qb4 Bf2 22.Kh1 Rf3 23.gf3 Qh3 24.Bh2 Qf1 0–1. tightfist (2500) – rollerblade (2525), net–chess.com, 2014.

6.Be2 0-0 7.d4 e4–/+ 8.Nfd2 Qd7 9.h3 Be2 10.Qe2 c6 11.c4 cb5 12.cb5 Qc7 13.Nc3 Nbd7 14.a4 Nb6 (14...Rac8!?+=) 15.a5= Nbd7 16.0-0 Rac8 17.Rfc1 Qd8 18.Nb3 (18.Ba3 Ba3 19.Ra3 Qe7=) 18...b6 (18...Qe7 19.a6 b6 20.Rc2=) 19.ab6 ab6 (worse is 19...Qb6 20.Ra6 Qb8 21.Na5+–) 20.Ra7 Ra8 21.Rca1 (21.Ra6 Qe7=) 21...Ra7+= 22.Ra7 Qb8 23.Ra6 Rc8 24.Na2 Qb7 25.Ba3 Bc7 26.Nb4 Nb8 27.Ra4 Bd6 28.Na6 Ba3 29.Ra3 Na6 30.ba6 Qa7 31.Qb5 h6 32.Ra1 Ra8 (32...Rc2 33.Nc1=) 33.Nc1 Kf8 34.Ne2 Ne8? (better is 34...Qc7+=) 35.Qd5+– Nc7 (35...Kg8 36.Qe4 Nc7 37.Nf4+–) 36.Qe4 Na6 (36...Kg8 37.Nf4+–) 37.Qh7 Qb7 38.Qh8 Ke7 39.Qg7 Nc7 40.Ra8 Qa8 41.Qe5 (better is 41.Ng3 Qa5 42.Qh6+–) 41...Ne6 (41...Kd7 42.Qf5 Ke8+–) 42.d5 Qa5 43.Nf4 Qe1 44.Kh2 Qf2 (44...Qa5+–) 45.de6 f6 (45...fe6 46.Nd5 Kf7 47.Qc7 Kg8 48.Ne7 Kf8 49.Ng6 Kg8 50.Qc8 Kg7 51.Qh8 Kg6 52.Qg8 Kf6 53.Qf8 Kg6 54.Qf2 b5+–) 46.Qc7 (46.Qc7 Ke8 47.Qd7 Kf8 48.Qf7; 46.Ng6 Ke8 47.Qb8) 1–0. Boysan,Ferit (2150) – Ruiz Mares,Jose (1680), Internet Section, 2004.

6.Be2 0-0 7.Ne5 Be2 8.Qe2 Re8 9.Nf3 c5 10.0-0 d4 11.Qc4 de3 12.fe3 Nbd7 13.Ng5 Re7 14.a4 Nb6 15.Qh4 h6 16.Bf6 gf6 17.Rf6 hg5 18.Qg5 Kf8 19.Qh6 Ke8 20.Rd6 Qd6 1–0. onur604 (2320) – mawliid (1970), lichess.org, 2020.

6.Be2 e4 7.Nd4= Be2 8.Qe2 0-0 (8...Be5 9.0-0=) 9.0-0 c5 10.bc6 bc6 11.Nf5 Bc7 12.d3 Re8 (12...Qd7 13.de4 de4 14.Nd4+=) 13.Nd2 g6 (13...Qd7 14.Bf6 Qf5 15.Bd4=) 14.Nh6 Kf8 15.Bd4 (15.Ng4 Nbd7=) 15...Nbd7 16.Rab1 c5 17.Ba1 Nb6 18.Ng4 Ng4 19.Qg4 f5 20.Qh3 Kg8 21.Qh6 Be5 (21...Qe7 22.Rb5=) 22.Be5+= Re5 23.f3 (23.Nb3 d4+=) 23...Qd7 24.Qf4 (24.Nb3 ed3 25.cd3 c4=) 24...Rae8+= 25.d4 cd4 26.ed4 R5e6 27.fe4 de4 28.Nb3 Qd5 29.Qg3 e3 (29...Rc6 30.c3+=) 30.Rbe1 Nc4 31.Re2 R6e7 32.a4 (32.c3 Qd6 33.Qd6 Nd6=) 32...Kh8 (32...Na3 33.Qf3 Qf3 34.gf3+=) 33.Rf3= Qd7 34.a5 Qa4 35.h4 Qb4 36.h5 gh5 (better is 36...Qd6!?=) 37.Rf5 Rg7 38.Qh2 Reg8 39.Qh5 Qe7 40.Rf4 Qc7 41.Qf5 Nd6 (41...Rg5 42.Qf6 Qg7 43.Qg7 Kg7 44.Nc5+/–) 42.Qf6 Qc4 (42...Re8!?+/–) 43.Re3+– Qc2 44.Rg3 Ne8 (44...Qc7 45.Nc5 Qe7 46.Rg7 Qg7 47.Kf2 Qf6 48.Rf6+–) 45.Qe5 h6 (45...Qc7 46.Rg7 Qg7 47.Rf7 Qe5 48.de5+–) 46.Nc5 (46.Rh4!? Qc6 47.d5 Qf6 48.Qf6 Nf6 49.Rh6 Nh7 50.Rg7 Kg7+–) 46...Kh7 47.Rg7 Ng7 (47...Rg7 48.Rf2 Qb1 49.Kh2+–) 48.Ne4 (better is 48.Rf7 Qd1 49.Kh2+–) 48...Qd1 (48...Kh8 49.Rh4 Qc1 50.Kh2+–) 49.Kh2 (better is 49.Rf1 Qd3 50.Nf6 Kh8 51.Ng8 Kg8 52.Qb8 Kh7 53.Qa7 Qe3 54.Kh2+–) 49...Qh5 50.Kg1 Qd1 51.Rf1 (51.Rf1 Qd3 52.Nf6 Kh8 53.Ng8 Kg8 54.Qb8 Kh7 55.Qa7 Qe3 56.Kh2+–) 1–0. Tiedemann,Joern (1995) – Mantau,Jan (1975), RSS7E basic–34, 2010.

6.h3 Bf3 7.gf3 0-0 8.a4 (8.Rg1 c5=+) 8...Nbd7 (8...c5 9.Rg1–/+) 9.Rg1 Qe7 (9...c5 10.bc6 bc6 11.Nc3–/+) 10.Nc3=+ c6 (10...Rfe8 11.a5=+) 11.Ne2 (11.a5 cb5 12.Bb5 Nc5=+) 11...Ne8 (11...c5 12.a5=+) 12.c4 (12.bc6 bc6 13.Ng3 Rb8=+) 12...f5 (12...dc4 13.bc6 bc6 14.d4–/+) 13.cd5 cd5 14.Qb3 (14.f4 ef4 15.Bg2 Nef6=+) 14...Qf7 (14...Nef6 15.Qd3=+) 15.Nc3 (15.d4 Rc8=+) 15...Nef6 16.f4 Rac8 (16...Nc5 17.Qc2 e4 18.d4=+) 17.fe5= Ne5 18.Bg2 (better is 18.Be2=) 18...f4 (better is 18...Nd3!? 19.Kf1 Ne4–/+) 19.Nd5+= Kh8 20.ef4 (20.Be5 Be5 21.d4 fe3 22.Qe3=+ (22.fe3 Nd5 23.Rf1 Bg3 24.Kd2 Nf6 25.Qf7 Rf7–/+)) 20...Nh5 21.Be5 Be5= 22.Rb1 Nf4=+ 23.Nf4 Qf4 24.Qe3= Qa4 (25.Qe5 Rfe8=+). Benassi,Aspasio (2150) – Canovas,Miguel Angel, WC.2005.P.00006, 2002.

6.h3 Bf3 7.Qf3 Nbd7 8.c4 c6 (8...e4 9.Qd1 Be5 10.Be5 Ne5 11.cd5 Qd5 12.Nc3+=) 9.Nc3= d4 (9...e4 10.Qd1=) 10.Ne4 (10.bc6!? bc6 11.Ne4 Ne4 12.Qe4 de3 13.fe3=) 10...Ne4+= 11.Qe4 Nf6 (11...Nc5!? 12.Qc2 Qg5=) 12.Qc2= cb5 13.c5 Rc8 14.Bb5 Nd7 Can c5 get defended? 15.ed4 (15.Qa4 Rc5 (worse is 15...Bc5 16.ed4 Be7 17.Qa7+/–) 16.ed4 ed4 17.Bd4 0-0 18.Bc5 Nc5=) 15...ed4 16.Qe4 (16.Qa4!? Rc5 17.Bd4+=) 16...Qe7+= 17.Bd7 (better is 17.Qe7!? Be7 18.Bd4+=) 17...Kd7+= 18.Qe7 Be7 19.Bd4 f6 (19...Bc5!? 20.Be3 b5+=) 20.Rb1 Rhe8 (20...Bc5!? 21.Bc5 Rc5 22.Rb7 Kc6=) 21.0-0 (21.Be3 f5+=) 21...Rc7 (21...Bc5 22.Bc5 (worse is 22.Rb7 Kc6 23.Bc5 Kb7–/+) 22...Rc5 23.Rb7 Rc7 24.Rc7 Kc7 25.Rc1 Kd6 26.Rc3+=) 22.Rfe1 Rec8 23.Be3 Bc5 24.Bc5 Rc5 25.Rb7 R5c7 26.Reb1 Rb7 (better is 26...Ke6!?+=) 27.Rb7+– Rc7 (27...Ke6 28.Rg7 a5 29.Ra7+–) 28.Rc7 Kc7 29.Kf1 Kc6 30.Ke2 Kc5 31.Ke3 f5?? (31...Kd5 32.f4+–) 32.f4 (32.Kf4 Kd4+–) 32...a6?? (better is 32...Kc4+–) 33.Kd3 Kd5 34.a3 (better is 34.Kc3+–) 34...a5 (34...h6+–) 35.h4 g6 (35...Kc5+–) 36.a4 h6 (36...Kc5 37.Kc3+–) 37.g3 h5 (37...Kc5 38.Kc3+–) 38.Kc3 Kc5 (38...Ke4 39.d4 Kf3+–) 39.d4 Kd5 40.Kd3 Kd6 41.Kc4 Kc6 42.d5 Kd6 43.Kd4 Kd7 44.Ke5 Ke7 45.d6 Kd7 46.Kd5 Ke8 47.Ke6 Kd8 48.d7 Kc7 49.Ke7 (49.Ke7 Kc6 50.d8Q+–) 1–0. Vrioni,Bersan (1855) – Liebenberg,Frederick Willem, Chennai IND, 2012.

6.Be2 Nbd7

7.a3 Qe7=+.

7.a3 Bh5 8.g4? (8.0-0 Qe7+=) 8...Bg6 (8...Bg4!? 9.h3 Bf5 10.Nc3–+) 9.c4 (9.g5 Ne4 10.d4 f6+=) 9...c6 (9...dc4 10.Bc4 Ng4 11.Rg1–/+) 10.a4 (10.g5 Ne4 11.cd5 cd5+=) 10...Qe7 (10...Ng4!? 11.Rg1 Ngf6–/+) 11.Nc3 0-0 (better is 11...dc4 12.bc6 bc6–/+) 12.Qb3? (better is 12.g5 Ne4 13.cd5 Nc3 14.dc3 cb5 15.ab5+=) 12...Nc5 Black plans e4 (12...d4 13.ed4 ed4 14.Nd4–+) 13.Qa2 (13.Qd1 d4! 14.Nb1 d3–+) 13...dc4 (13...d4 14.ed4 ed4 15.Nd4 Ng4 16.Kf1 Nh2 17.Rh2 Bh2 18.bc6–+) 14.Bc4 (14.bc6 bc6 15.Qc4 Rfb8–+) 14...Nd3–+ 15.Bd3 Bd3 16.Qb3 (16.bc6 bc6 17.g5 Ne4–+) 16...e4 17.Nd4 Be5 (17...Ng4!? 18.Nf5 Qd7 19.Ng7–+) 18.Ba3 (18.bc6 Bd4 19.ed4 Ng4 20.cb7–/+) 18...c5–/+ 19.Nf5 (19.g5 Ng4 20.Nd5 Qg5–+) 19...Qc7 Black plans c4 20.Rc1 Rfd8 21.g5 c4 22.Qb4 Bc3 (better is 22...Ng4 23.Nd5 Qd7–+) 23.Qc3= Ne8?? (23...Nh5 24.Bb2 Qd7 25.Qe5–/+ (25.Ng7?? Qg4 26.Qd3 cd3–+)) 24.Bb2?? (better is 24.Qb4 h5 25.gh6+–) 24...f6 (24...Qd7!? 25.Qe5 a6+=) 25.gf6+= Nf6 26.h4 (26.Ng7 Qg7 27.Qf6 Qf6 28.Bf6 Rd5+=) 26...Rd5 (26...Rf8 27.Rg1 Nh5 28.Nd6–/+ (28.Ng7?? Qh2 29.Rf1 Bf1–+)) 27.Nh6 (27.Ng7 Qg7 28.Qf6 Qf6 29.Bf6 a6 30.Rg1 Kf7+=) 27...Kh8 (better is 27...Kf8 28.Ba3 Ke8=) 28.Rh3? (28.Qf6 gf6 29.Bf6 Qg7 30.Nf7 Kg8 31.Bg7 Kf7+= (31...Kg7?! 32.Ng5+=)) 28...Rh5?? (better is 28...Nh5 29.Rh1 a6–+) 29.Qf6+= Rh6?? (29...gf6 30.Bf6) 30.Qh6+– Rg8 (30...Rf8+–) 31.Rg3 Qf7 32.Bg7 (better is 32.Rg5 Be2 33.a5+–) 32...Rg7 33.Rg7 (33.Qd6 Rg3 34.Qg3 h6+–) 33...Qg7 34.Qg7 Kg7 35.f3 ef3 36.Kf2 Kh6 (36...Be2 37.Rg1 Kf7 38.h5+–) 37.Kf3 Kh5 38.Kg3 (38.Rc3 h6+–) 38...h6 39.Kf4 (better is 39.Rc3!? Be2+–) 39...Kh4 (39...a6+–) 40.Rh1 1–0. Johansen,D (2500) – Sandahl,Jan, Copenhagen, 1983.

7.c4 c6 8.cd5 cd5 9.h3 Bh5 10.Nh4 Be2 11.Qe2 a6 (11...e4 12.Nf5 Bf8 13.0-0=) 12.Nf5= Bf8 13.e4 (13.f4 e4=+) 13...g6 (13...de4 14.0-0–/+) 14.Nh4 (14.Ng3 de4 15.0-0 Qb6=+) 14...Bd6 (14...Ne4 15.Nf3 Bc5 16.Ne5 Bf2 17.Kd1 Ne5 18.Be5–+) 15.0-0 (15.ed5 Nd5 16.Qd3 N7f6=+ (< 16...Qh4 17.Qd5 Bc5 18.0-0=)) 15...0-0 (15...Ne4!? 16.Nf3 0-0–/+) 16.d3 0–1. Maly,Wolfgang – Runge,Dieter, DSB Derby Seniors 3rd, 2004.

7.d3 0-0 8.0-0 Re8 (8...a6 9.Nc3+=) 9.Nbd2 (9.c4 a6+=) 9...c5 (9...c6 10.a4+=) 10.c4 d4 (10...e4 11.Ng5 Be2 12.Qe2+=) 11.e4 (11.Nd4 ed4 12.Bg4 Ng4 13.Qg4+=) 11...Nh5 (11...Qc7 12.a4+=) 12.g3 (better is 12.Nd4!? Nf4 13.Bg4 ed4 14.Bd7 Qd7 15.Nb3+=) 12...Bh3+= 13.Re1 h6 14.Nh4 (14.a4 Nhf6+=) 14...Nf4 (14...Nhf6 15.Nf5 Qc7 16.a4+=) 15.Bf1 Bf1 (15...Qf6 16.Nf5 Bf1 17.Nf1+=) 16.Nf1 Nh3 (16...Qf6 17.Nf5 Ng6 18.Qg4+=) 17.Kg2= Nf4 (17...Ng5 18.Bc1=) 18.Kh1 (18.Kg1 Qf6 19.Nf5 Ng6+=) 18...Nh3 (18...Ne6 19.Nf5 Bc7 20.Qg4+=) 19.Kg2= Ng5 20.Nd2 (20.Bc1 a6=) 20...Nf6 (20...a6 21.Nf5 Bc7 22.ba6 Ra6 23.Bc1+=) 21.Ndf3 (21.Nf5 a6=) 21...Ne6+= 22.Bc1 (better is 22.Nf5+=) 22...Bf8 (better is 22...a6!?+=) 23.Ne5+= Nh7 (23...a6 24.ba6 Ra6 25.Nf5+=) 24.Kg1 (24.Nf5 Qc7 25.f4 Nf6+=) 24...Be7 (24...Bd6 25.Nef3+=) 25.Ng2 (25.Qh5 Neg5+/–) 25...Nhg5 (25...Bd6 26.Nf3+=) 26.Bg5 (26.f4 Nh7+/–) 26...Ng5 (26...Bg5 27.f4 Bf6 28.Ng4+=) 27.Rf1 (27.f4!? Ne6 28.Qh5+/–) 27...Bd6+= 28.Nf3 Nh3 29.Kh1 Qd7 (29...a6 30.a4+=) 30.Ngh4 (30.Nd2 a6 31.b6 Ng5+/–) 30...Be7 (30...g6!?+=) 31.Nf5+/– Bf6 (31...Kh7 32.Ne5 Qe6 33.f4+–) 32.Kg2 (better is 32.Nd2!? Ng5 33.Qg4+–) 32...g6 33.N5h4 (33.Nh6 Kg7 34.Nf5 gf5+/–) 33...Qg4+= 34.Kh1 (34.Re1 Nf4 35.Kf1 Ne6+=) 34...Re7 (34...a6 35.ba6 Ra6 36.Ng2=) ½–½. Schwichtenberg,Juergen – Junker,Wilfried, Bad Wildungen op Seniors, 1998.

7.d3 a6 8.ba6 Ra6 9.d4 Bf3 10.Bf3=+.

7.h3 Bh5 8.c4 dc4 (8...e4 9.Bf6 Qf6 10.Nd4 Be2 11.Qe2 dc4 12.Nc3-/+) 9.Bc4 (9.g4 Bg6 10.Bc4 e4=+) 9...e4 10.g4 Ng4 (worse 10...ef3 11.gh5 Ne5 12.Be5 Be5 13.d4+/-) 11.hg4 Bg4 12.Be2 ef3 13.Bf3 Bf3 (13...Nc5!? 14.Bg7 Nd3 15.Kf1 Rg8=) 14.Qf3= Be5 15.d4 Bf6 16.Qb7 Nb6 (16...Rb8 17.Qc6=) 17.a4 0-0 18.Nd2 Rb8 (18...Re8 19.a5 Bd4 20.ab6 Bb2 21.bc7+=) 19.Qe4+/- g6 20.Ke2 (20.Qf4 Bg7+/-) 20...Re8 21.Qd3 (21.Qf4!? Bg7 22.Qh4+=) 21...Nd5= 22.Kf1 (22.Qc2 Qd7 23.Kf3 a6 24.ba6 c5-/+) 22...Nb4 (22...c6 23.Ne4=+) 23.Qb3 (23.Qc4 Nd5 24.Ke1 c6=) 23...Qe7 (23...a5!?=) 24.Ba3 a5 25.Rc1 (25.Qc4!?+=) 25...Bd4= 26.Bb4 ab4 27.Rc4 Bc3 (27...Bg7 28.Rb4 (worse 28.Qb4 Qb4 29.Rb4 Bc3-/+) 28...c6 29.b6=) 28.Nb1 (28.Ne4 Be5=) 28...Rbd8 (28...Be5 29.Qb4 Qe6 30.Rch4=) 29.Nc3 bc3 30.Qc3?? (30.Rc3 Rd2 31.Rd3 Rd3 32.Qd3=) 30...Rd1-+ 31.Kg2 (31.Ke2 Rh1 32.Qd4-+) 31...Qg5 32.Kh2 (32.Kf3 Rh1 33.Rc5-+) 32...Qh4 (32...Qh5 33.Kg3 Rh1 34.Qg7 Kg7 35.Rh4 Qh4 36.Kf3 Qh5 37.Kg3 Rg1 38.Kf4 Qg4) 33.Kg2 (better 33.Rh4 Rh1 34.Kh1+-) 33...Qh1 34.Kg3 Rg1 35.Kf4 g5 36.Kf5 Qf3 (36...Qf3 37.Rf4 Qd5 38.Qe5 Qe5; 36...Qd5 37.Qe5 Qe5) 0-1. pudman79 (2155) - alexvdm (2190), lichess.org, 2021.

7.0-0 0-0

8.Nc3 Qe7=+.

8.d3 a6 9.Nc3=+.

8.d3 c6 9.c4 Qc7 10.h3 Bf3 11.Bf3 e4 (11...dc4 12.dc4 e4 13.Be2+=) 12.Be2 ed3 (12...dc4 13.dc4 Rfd8 14.Nc3+=) 13.Bd3 (13.Qd3 Ne5 14.Qf5 dc4=) 13...dc4+= 14.Bc4 Ne5 15.Be2 Rad8 (15...cb5 16.Bb5 Rfd8 17.f4=) 16.Qb3 c5 (16...cb5 17.Rc1 Qe7 18.Qb5=) 17.Nd2 b6 (17...Ned7 18.Nc4+=) 18.a4 (18.Rfd1 Rfe8+=) 18...Ng6 (18...Qe7 19.Rfd1+=) 19.Nc4 Bh2 20.Kh1 Ne4 (20...Be5 21.Ne5 Ne5 22.Rfd1+=) 21.Qc2 (21.Bd3 Rfe8+/–) 21...Nd6 (better is 21...f5!?+/–) 22.g3+– Nc4 23.Qc4 (23.Kh2?! Nb2 24.Qb2 Qe5=; worse is 23.Bc4 Bg3 24.fg3 Qg3+/–) 23...Bg3 24.fg3 Qg3 25.Rf3 Qh4 26.Rg1 Qc4 27.Bc4 Rd2 28.Bc3 Rc2 (better is 28...Rd7+–) 29.e4 Kh8 (29...Rc3 30.Rc3 Rd8 31.Bd5+–) 30.Bb3 Re2 (30...Rc3 31.Rc3 Ne5+–) 31.Bd5 (better is 31.Rf7 Rf7 32.Bf7+–) 31...f6 32.Rg4 (better is 32.h4 Ne7 33.Rg2 Rg2 34.Kg2 Nd5 35.ed5+–) 32...Re8? (32...Rc2 33.Bb3 Re2 34.Kg1+–) 33.Rfg3 (better is 33.Rf6 Re3 34.Rfg6 Rh3 35.Kg2 Rc3 36.Rg7+–) 33...Re7 (33...Rc2 34.h4+–) 34.h4 Ne5 (34...Rf2 35.h5 Ne5 36.Be5 fe5 37.Rg6+–) 35.Rf4 (35.Be5 fe5 36.Rf3 g6+–) 35...h6 36.Rf5 ½–½. Winterfeldt,Steffen (1760) – Walter,Markus (1940), Mittelfrankenliga–B2b, 2006.

8.d3 Qe7 9.Nbd2 Nc5 (9...a6 10.ba6 Ra6 11.d4+=) 10.c4 (10.Be5 Be5 11.Ne5 Be2 12.Qe2 Qe5=) 10...e4+= 11.de4 (better is 11.Ne1 Be2 12.Qe2=) 11...Nfe4?? (better is 11...de4 12.Ne1 Be2 13.Qe2 Rfd8+=) 12.cd5+/– f5 (12...Rfe8 13.Nc4+/–) 13.g3 (13.Nc4!?+/–) 13...Na4 14.Qa4 Nd2 15.Nd2 Be2 16.Rfe1 Bg4 (16...Bh5 17.Qb3+=) 17.e4+/– Qg5 18.Qd4 White prepares the advance e5 (better is 18.f4 Qd8 19.Qd4+/–) 18...Rae8? (better is 18...fe4 19.Ne4 Qg6+/–) 19.e5+– Be7 20.f4 (20.f3 Bh3 21.f4 Qg6+–) 20...Qg6 21.Rac1 b6 22.Nb3 Bf3 (22...Rc8 23.Rc6 Qf7 24.Rec1+–) 23.Rc7 Bh4 (23...Qg4+–) 24.Qf2 (better is 24.Kf2 Be4 25.gh4 Qg2 26.Ke3 Qf3 27.Kd2 Qf4 28.Kc3+–) 24...Bd5 25.e6 White creates threats along the open d–file (25.Ra7 Ra8 26.Rd7 Rfd8 27.Rd5 Rd5+–) 25...Be7? (25...Re7 26.Rd7 Bb3 27.ab3+/–) 26.Nd4 (26.Ra7!? Bb3 27.ab3 Bc5+–) 26...Rf6 (better is 26...Bc5+/–) 27.Qe2 (better is 27.Ra7 Be6 28.Nc6+– (28.Re6?! Re6 29.Ne6 Qe6+/–; 28.Ne6?! Re6 29.Re6 Qe6+–)) 27...Bc5= 28.Ra7?? (28.e7=) 28...Bd4 (better is 28...Rfe6 29.Qe6 Re6–+ (29...Qe6?! 30.Re6 Re6 31.Rd7 Ba2 32.Kg2=; worse is 29...Be6 30.Rc1–+)) 29.Bd4+= Rfe6 30.Be5 Qh6? (better is 30...R8e7 31.Re7 Re7+=) 31.Qd2 Re5?? (31...Bc4 32.Qd7 Qg6+–) 32.Re5 (better is 32.Qd5! R5e6 33.Ra8 Ra8 34.Re6 (34.Qe6?! Qe6 35.Re6 Ra2+/–) 34...Qe6 35.Qe6 (35.Qa8?! Kf7+/–) 35...Kh8 36.Qb6+–) 32...Re5+/– 33.Rd7 Qe6?? (better is 33...Kf8 34.Rd5 Rd5 35.Qd5 Qf6+/–) 34.Rd8+– Kf7 35.fe5 Qe5 (35...Ba2 36.Qc2 Qe5 37.Qa2 Kg6+–) 36.Qd5 (36.Qd5 Qd5 37.Rd5+–) 1–0. Starr,Albert – Chinchwadkar,Ojas, San Francisco CalChess Labor Day, 2005.

8.h3 Bf3 9.Bf3 a6 10.Nc3 e4 11.Be2+=.

8.h3 Bf3 9.Bf3 Nb6 10.d3=+.

8.h3 Bf3 9.Bf3 c6 10.a4 Re8 (10...Qa5 11.Nc3+=) 11.d3 Qc7 12.e4 (12.Nd2 Nc5+=) 12...a6 13.c4 ab5 14.ab5 dc4 (14...Ra1 15.Ba1 d4 16.Nd2+=) 15.dc4 cb5 16.cb5 Ra1 17.Ba1 Ra8 18.Nc3 Bb4 (18...Nb6 19.Qd3=) 19.Nd5 Qc5 20.Qb3 Nd5 21.Qd5 Qd5 22.ed5 f5 23.Rb1 Bc5 24.Kf1 (24.Bc3 e4 25.Be2 Nb6=) 24...e4 25.Be2 Nb6 (25...Kf7 26.Rd1=) 26.Be5 (26.Rd1 Rd8+=) 26...Nd7 (26...Kf7 27.Rc1 Nd7 28.Ra1 Ra1 29.Ba1=) 27.Bc7 (27.Bf4+=) 27...Bd4 (27...Ra2!?=) 28.Bc4 (28.d6 Ra4+=) 28...Ra4+= 29.Bb3 (29.Rc1 Ne5 30.Be5 Be5 31.d6 Rc4 32.Rc4 Bd6+–) 29...Rb4 30.Ba2 (30.d6 Kf8 31.Ba2 Rb1 32.Bb1 Nc5+=) 30...Rb1 (30...Ra4 31.Bb3 Rb4 32.Bc2=) 31.Bb1+= Kf7 32.Ba2 Ke7 (32...Kf6 33.Ke2+=) 33.Ke2 (33.d6 Ke8+/–) 33...g6 (33...Be5 34.b6=) 34.f3 (34.d6 Ke8+/–) 34...ef3 (34...Bc5 35.fe4 fe4 36.Bb1+=) 35.Kf3 Nf6 (35...Ne5 36.Ke2+=) 36.Bb3 (36.Bc4 Ne4 37.Bd3 Nd6+=) 36...Kd7 (36...Ne4 37.Bc2 Nd6 38.Bd3+=) 37.b6 Bc5 38.Ba4 (38.g4 Ne4 39.Kf4 Bd6 40.Bd6 Nd6 41.gf5 Nf5+/–) 38...Ke7 (38...Kc8 39.d6=) 39.Bb3 (39.Bc6 bc6 40.b7 Ba7 41.dc6 Nd5+=) 39...Kd7 (39...Ne8 40.g4+=) 40.Ba4 (40.g4 Bd6 41.gf5 gf5 42.Ba4 Ke7=) 40...Ke7 (40...Kc8 41.d6=) 41.Bc6+= Nd7 (better is 41...bc6 42.b7 Ba7 43.dc6 Nd5+=) 42.d6 (42.Bb7 Nb6 43.d6 Kd7 44.g3+=) 42...Bd6+= 43.Bb7 Bc5 44.Bd5 (44.g4 Bb6 45.Bf4 Bd4+=) 44...Bb6 45.Bf4 Kf6 46.Bg8 (46.h4 Bd4–/+) 46...h5 47.Bd6 Bd4 48.Bc7 Be5 (48...g5 49.Bd8 Kg6 50.Bc7–/+) 49.Bd8 Kg7 50.Bc4 Bf6 51.Bf6 Kf6 52.Ba6 (52.Ke3 Nb6 53.Bb3 h4–/+) 52...Ne5 (52...h4 53.Bb7–/+) 53.Kf2 (53.Ke3 g5–/+) 53...Kg5 (53...f4 54.Bb7–/+) 54.g3 (54.Ke3!?–/+) 54...h4–+ 55.Be2 (55.Bc8 hg3 56.Kg3 f4 57.Kf2 f3–+) 55...hg3 56.Kg3 f4 57.Kh2 (57.Kf2 Kh4 58.Bf1 f3–+) 57...Kh4 58.Bf1 g5 (58...f3 59.Ba6–+) 59.Kg2 Kh5 (59...Nc6 60.Kf2–+) 60.Kf2 Ng6 61.Be2 Kh4 62.Bf1 (better is 62.Bg4–+) 62...Ne5?? (62...Ne7 63.Bg2–+) 63.Kg2 Nf7 (63...Nc6 64.Be2–+) 64.Kf3 (64.Bb5 Nh6–+) 64...Nh6 65.Ke4 Kg3 66.Kd3 (66.Ke5–+) 66...Nf5 67.Ke4 Ne3 68.Be2 Kh3 69.Kf3 Nc2 (69...Nd5 70.Bf1 Kh4 71.Ke4–+) 70.Kf2 (70.Bc4 Kh4–+) 70...g4 71.Bf1 (71.Bf3 Ne3 (71...gf3?! 72.Kf3 Ne3 73.Kf4=) 72.Be2 g3 73.Kg1 g2–+) 71...Kh2 (71...Kh2 72.Ba6 g3 73.Ke2 g2–+) 0–1. Krueger,Bernhard – Benedikt,Alexander, Baunatal op 1st, 1995.

8.h3 Bh5 9.d3 Re8 (9...c6 10.Nc3+=) 10.Nbd2 (10.g4 Bg6=) 10...c5 (10...c6 11.a4+=) 11.c4 d4 (11...e4 12.Ne1 Be2 13.Qe2+=) 12.Ng5 (12.Nd4!? ed4 13.Bh5 Nh5 14.Qh5+=) 12...Bg6+= 13.Nge4 Ne4 14.Ne4 Bf8 (14...Be4 15.de4 a6 16.a4+=) 15.Bf3 (15.a4 f5 16.Nd2 de3 17.fe3 Qg5=) 15...Rb8 (15...f5 16.Ng3 e4 17.Bh5 Bh5 18.Qh5+=) 16.Re1= f5 17.Nd2 Nf6 (17...e4 18.Be2 de3 19.fe3+=) 18.ed4 (18.e4 Bd6=) 18...ed4 (18...cd4 19.a3+=) 19.Re8= Qe8 20.Qe1 (20.Qf1 Qd7=) 20...Qd7 (20...f4 21.Qf1=) 21.a4 (21.Nb3 Qc7=) 21...Bd6 22.Qf1 Re8 (22...Bc7 23.a5+=) 23.Re1= Bb8 (23...Re7 24.a5=) 24.Nb3 (24.Re8 Be8 25.Qe2 Qc7=) 24...h6 (24...Qc7 25.Re8 Be8 26.Qe1=) 25.Re8 Be8 26.Qe1 (26.Bc1 Bf7=) 26...Qc7 (26...b6 27.Bc1=) 27.g3 (27.Qe6 Kh8 28.Bc1 Bd7+=) 27...b6 (27...f4 28.Bc1 fg3 29.fg3=) 28.Qe6 (28.Bc1 Qc8=) 28...Kh7 29.Bc1 (worse is 29.Qf5 Bg6 30.Qe6 Bd3–/+) 29...Qe5 30.Qe5 Be5 31.Be2 g5 32.a5 Bc7 (32...f4 33.Kg2=) 33.a6 (33.Kg2 f4=) 33...Kg6 34.Ba3 (34.f4 Bf7=) 34...Nd7 35.Kg2 h5 (35...Kf6 36.Bc1=) 36.Bf1 (36.Bc1 Bf7=) 36...h4 (36...f4 37.Be2+=) 37.Nd2 (37.gh4 gh4 38.Be2 Bf4+=) 37...hg3+= 38.fg3 ½–½. Nikolic,Jovane (1690) – Nascimento,Jose Eduardo (1865), Sao Bernardo do Campo BRA, 3rd Open, 2012.

4.Nf3 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 d4 8.e3= de3 9.de3 (9.Ne5? ef2 10.Kf2 Qf6 11.Ke1 Be5-+; 9.fe3?! Bg4 10.Nc3 Nf6=) 9...Bb4 (9...Nd7 10.Nbd2=) 10.Nbd2+= Bg4 (10...f6!?+=) 11.Be5+/- Bf3 12.gf3 Ne7 (12...Nf6!?+/-) 13.Bg7+- Rg8 14.Bb2 Nf5 (better 14...Nd5+-) 15.c3 Bc5 16.Qc2 Nd6 (16...Ne7 17.Qh7 Nd7 18.Ne4+-) 17.Qh7 Qg5 (17...Rf8 18.Ne4 Nd7 19.Nd6 Bd6 20.Qe4 Be7 21.Qb7+-) 18.Ne4 Ne4 19.Qe4 (worse 19.fe4 Rg6+-) 19...Qe7 20.Qb7 Bb6 (20...Qd8+-) 21.Qb8 Kd7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Nd7 8.e3 e4?? 9.Bg7+- ef3 10.Bh8 fg2 11.Bg2 Be5? (11...Qg5 12.Bh3 Ne7+-) 12.Be5 Ne5 13.Qh5 Qf6 14.f4 Bg4 (14...Ng6 15.Bd5 Qe7+-) 15.Qe5 Qe5 16.fe5 c5 (16...Be6 17.d4+-) 17.Bd5 Bf3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ba6+= Na6 6.Be5 f6 (6...Be5 7.Ne5 Nb4 8.e3=) 7.Bd6+= Qd6 8.e3 c6 9.c4 Nb4 10.Nc3 Bf5 (10...dc4!? 11.Bc4 b5+/–) 11.Nd4+/– Ne7 (11...Bd3 12.a3 Bf1 13.Kf1+–) 12.Nf5+– Nf5 13.a3 Na6 14.cd5 cd5 15.Qb1 Qd7?? (better is 15...Ne7+–) 16.Bb5 (16...Nd6 17.Bd7 Kd7 18.Nd5+–) 1–0. Taulien,Hans_Juergen – Seethaler,Franz, remoteschach.de, 2003.

4.Nf3 c6

5.a4 Qf6 6.e3 Bg4 7.Be2 Bf3 (7...Ne7 8.0-0=+) 8.Bf3= Qe6 (8...Ne7 9.0-0=) 9.0-0 Nf6 10.d3 0-0 11.Nd2 e4 (11...a6 12.c4=) 12.de4 Ne4 13.Ne4 de4 14.Bg4 Qg6 15.c4 c5 (15...Rd8 16.f4=) 16.Bh5 Qh6 17.f4 g6?? (better 17...Qe6+=) 18.Qd6+– gh5 (18...Nd7 19.Bg4 f5+–) 19.Qh6 (19.Qh6 f6 20.Rad1 Nc6 21.bc6 Rf7 22.c7 Raf8 23.Rd8 b5 24.c8Q Rd8 25.Qd8 Rf8 26.Qhf8) 1–0. DEFFM – GuestDSNA, freechess.org, 2020.

5.Ne5 Qc7 6.Nc6 bc6 7.Bg7 Be5 8.Bh8 Bh8 9.c3 Ne7 10.e3 a6 11.bc6 Nbc6 12.Bd3 Ne5 13.Bh7 N7g6 14.0-0 Bg4 15.f3 Be6 16.f4 Nd3 17.f5 Be5 18.fe6 Bh2 19.Kh1 Qg3 20.Qa4 Kf8 21.Rf7 1–0. onur604 (2320) – PACHACUTEC27 (2205), lichess.org, 2020.

5.Ne5 Qf6 6.Nc4!+/– d4 (6...dc4 7.Bf6) 7.Nd6 Qd6 8.e3 Nf6 9.Bd4 0-0 10.Qf3 Bg4 11.Qg3 Qg3 12.hg3 h5 (12...Nbd7 13.bc6 bc6 14.f3+–) 13.Bf6 gf6 14.d4 b6 (14...a6 15.bc6 Nc6 16.d5+–) 15.Nc3 Kg7 16.a4 a5 17.Rb1 Rh8 (17...Rc8 18.Bd3+–) 18.bc6 Nc6 19.Nd5 Nb4 20.Nb4 ab4 21.Rb4 Bf5 22.Kd2 (< 22.Rb6 Bc2 23.Be2 Ra4 24.Rh5 Rh5 25.Bh5 Be4+–) 22...Rhc8 23.c4 Ra6 (23...Bg6 24.Be2+–) 24.c5! bc5 (24...Rc5 25.dc5) 25.Ba6 Rc7 (25...cb4 26.Bc8 Bc8 27.Rh5 b3+–) 26.Rc1 (26...cb4 27.Rc7+–) 1–0. Taulien,Hans_Juergen (2225) – Witt,Monika, remoteschach.de, 2004.

5.Ne5 Nf6!?+=.

4.Nf3 Bd7

5.a4 c6 6.e3 (6.Ne5 Nf6+=) 6...cb5 (better is 6...Qf6=+) 7.Ne5+/– (7.ab5?! Qe7=) 7...f6?? (better is 7...Nf6 8.Bb5 0-0+/–) 8.Qh5+– (8.Nd7?! Qd7 9.ab5 Ne7+–) 8...Ke7 (8...g6 9.Ng6! hg6 10.Qh8 Be6 11.ab5 Qc7+–) 9.Qf7 1–0. pumpkin (2405) – duffster (1755), net–chess.com, 2004.

5.a4 Qe7 6.c4 d4 7.e3=+.

5.e3 f6 6.c4+= Ne7 7.cd5 (7.d4 ed4 8.Nd4 c5 9.bc6 A) worse 9...Bc6 10.Ne6 (10.Nc6?! Nbc6 11.Nd2 Qa5=) 10...Qa5 11.Bc3+–; B) 9...Nbc6 10.cd5 Qa5 11.Nd2 Nd4 (worse 11...Nd5 12.N4b3 Qc7 13.Qh5 Kf8 14.Qd5+–) 12.Bd4 Qd5=) 7...Nd5 8.Qb3 Be6? (better 8...c6=) 9.Bc4+– c6 10.bc6 (10.e4 Nd7 11.d4 N7b6 12.ed5 cd5+–) 10...bc6 11.Qb7?? (better 11.e4!? Qb6 12.ed5 cd5 13.Bb5 Nd7 14.d4+–) 11...Nd7 (better 11...Qb6!? 12.Qb6 ab6=+) 12.Qc6+= Rc8?? (better 12...Ne7 13.Qd6 Bc4+=) 13.Qd6+– Rc4 (13...Nc5 14.Qd8 Kd8+–) 14.Qe6 Ne7 (14...Qe7 15.Qd5 Nb6 16.Qb5 Qd7 17.Qb3+–) 15.Qc4 1–0. GuestJGQY – GuestFTCB, freechess.org, 2020.

5.Be5 Be5 6.Ne5 Bb5=.

5.Ne5 Bb5 6.c4 dc4 7.Nc4 Bc4 (better 7...Nf6 8.Nd6 Qd6=) 8.Bg7+– Nf6 (better 8...Be5!? 9.Be5 f6+–) 9.Bh8+– Be5 10.Nc3 Bc3 (10...Nc6 11.Rb1+–) 11.dc3 Qe7 (11...Nbd7+–) 1–0. onur604 (2320) – Nemo5678 (2245), lichess.org, 2020.

4.Nf3 Nd7

5.Ba3=+.

5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 Ngf6 9.c4 e4 10.Nd4 c5 11.bc6= bc6 12.Nc6 Qc7 13.cd5 Nd5 14.Nd4 (14.Bg7 Rg8 15.Qc2 Rg7-+) 14...0-0 (worse 14...Bh2 15.Nb5 Qb8 16.Bg7+/-) 15.h3 (15.Nb5 Qc6+=) 15...Nb4 16.Nb5?? (better 16.Be2=) 16...Nc2-+ 17.Ke2 Qc4 (better 17...Ba6!? 18.N1c3 Qc4 19.d3 ed3 20.Qd3 Qd3 21.Kd3 Na1-+) 18.d3-/+ Qb5 19.Kd2?? (better 19.Qc2 Nc5 20.Qd1-+) 19...Na1 20.de4 (20.Ke1 Bb4 21.Nd2 Nb3 22.de4 Qb6-+) 20...Bb4 (20...Qb2 21.Ke1 Nc2 22.Ke2 Ba6 23.Qd3 Bd3 24.Kd1 Ne3 25.fe3 Qb1 26.Kd2 Bb4) 21.Kc1 Qc5 22.Qc2 0-1. Jimito100 (2020) - Hrak (1970), Rated Bullet game, lichess.org, 2021.

5.Nc3 Ngf6 6.e3 0-0 7.Be2 c5 8.bc6 bc6 9.Rb1 Qc7 10.h3 Rb8 11.0-0 Nb6 12.d3 e4 13.de4 de4 14.Nd4 a6 15.Qc1 c5 16.Nb3 Qe7 17.Rd1 Qe5 18.g3 Qe6 (18...Qe7 19.a4+=) 19.Qd2 (19.Ba3 Nbd7=) 19...Ne8 (19...Be7!? 20.Bf1 Nc4 21.Bc4 Qc4–/+) 20.Na5 Be5 21.Ba3 Nf6 (worse is 21...Qh3 22.Ne4 Nd6 23.Ng5+/– (23.Nd6?! Bg3 24.fg3 Qg3 25.Kh1 Qh3 26.Kg1 Qg3 27.Kh1 Qh3 28.Kg1 Qg3=)) 22.Bf1 Nbd7 23.Nb3 Exerts pressure on the isolated pawn 23...h5 (better is 23...Qc6!?=) 24.Nc5+/– Nc5 25.Rb8 Bb8 26.Bc5 Re8 27.Bd4 h4 28.Rb1 (28.Bf6!? Qf6 29.Ne4+/–) 28...Bc7+= 29.Qe2 hg3 30.fg3 Bg3 31.Rb6 Attacks the isolani on a6 ½–½. FortKnox – A_der_s, playchess.de, 2005.

5.c4 e4?? 6.Bg7+- ef3 7.Bh8 Ne7 (7...fg2 8.Bg2 dc4 9.Nc3+-) 8.cd5 (8.ef3?! f6 9.f4 Ng6+/-) 8...Be5? (8...Kf8 9.Qc2 Kg8+-) 9.Be5 Ne5 10.ef3 (10.gf3 Nd5 11.Rg1 Ng6+-) 10...Nd5 11.d4 (11.Qe2!? Qe7 12.d4 Ng6 13.Qe7 Nge7+-) 11...Ng6 12.Bc4 Be6 (12...Qe7 13.Kf1 Be6 14.Qb3+-) 13.0-0 Qg5 14.Bd5 Bd5 15.Re1 Kd7 (15...Be6 16.Nc3 0-0-0 17.g3+-) 16.Qd2 Nf4 17.g3 Rg8 (17...Nh3 18.Kg2 Qf5 19.Qe3+-) 18.Re5 (18.Re5 Nh3 19.Kf1 Bc4 20.Kg2+-) 1-0. DEFFM – grinderr, freechess.org, 2021.

5.c4 Qe7 6.cd5= Ngf6 7.Nc3 e4 8.Nd4 Nb6 9.e3 0-0 10.Qb3 Nfd7 (better 10...Rd8=+) 11.Nf5+– Qg5 (better 11...Qe5!? 12.Nd6 cd6+–) 12.Nd6+– cd6 13.Ne4 Qg6 14.Qb4 Nd5 15.Qd4 N7b6 16.Nd6 Qd6?? (better 16...Rd8 17.Bd3 Qg2+–) 17.Qg7 1–0. onur604 (2320) – Drjioujiou (2150), lichess.org, 2020.

5.c4 f5 6.cd5 Ngf6 7.e3 Nd5 8.Bc4 c6 9.0-0 Qe7 10.Nc3 N7b6 11.Bb3 (11.Nd5 cd5 12.Bb3 Nc4=) 11...Be6 (11...Nc3 12.Bc3 cb5 13.d4=+) 12.a4 0-0 13.a5 Nd7 (13...Nc3!? 14.Be6 Qe6 15.Bc3 Nd5=) 14.a6+= b6 (better 14...Rab8!? 15.ab7 Rb7 16.bc6 Rb3 17.Qb3 Ne3+/-) 15.bc6+- Nc5?? (better 15...Nc3 16.Bc3 Nc5 17.Be6 Qe6+-) 16.Nd5 Bd5 (16...Qd8 17.Rc1 Rc8 18.Rc5 bc5+-) 17.Bd5 Kh8 18.d4 Ne4 (18...ed4 19.ed4 Ne4 20.Re1+-) 19.de5 Bc5 20.Qc2 1-0. onur604 (2320) - Drjioujiou (2150), Casual Rapid game, lichess.org, 2021.

5.e3 e4 6.Nd4 Ne5 7.d3 f5 8.Nc3 c6 9.f4 ef3 10.Nf3 Nf6 11.Be2 Nfg4 12.Qd2 a6 13.Ne5 Ne5 14.bc6 bc6 15.0-0 0-0 16.Rae1 Rb8 17.Ba1 Rf6 18.e4 de4 19.d4 Rh6 20.Qe3 Qh4 21.h3 Ng4 22.Bg4 fg4 23.Qf2 gh3 24.Qf7 Kh8 25.Qf8 Bf8 1-0. banjoband (2060) - Kapsarov (1940), Rated Blitz game, lichess.org, 2014.

5.e3 e4 6.Bg7 Be5 7.Ne5 Ne5 8.Bh8 Nf6 9.Nc3 Be6 10.Be2 Qe7 11.0-0 0-0-0 12.Bf6 Qf6 13.d3 Rg8 14.de4 Bh3 15.g3 Bf1 16.Qf1 Nf3 17.Bf3 Qf3 18.ed5 h5 19.Rd1 f5 20.Rd3 h4 21.d6 hg3 22.d7 Kd8 23.hg3 Rh8 24.Qg2 Qh5 25.Nd5 c5 26.bc6 bc6 27.Nf4 Qh6 28.Kf1 Qf8 29.Qc6 Qf7 30.Ne6 Ke7 31.d8Q Rd8 32.Nd8 a5 33.Nf7 1–0. axtur777 – ChessOldwitch, lichess.org, 2020.

5.e3 e4 6.Bg7 f6?? 7.Bh8 (7.Nd4 Nf8 8.Qh5 Ng6 9.Bh8 Qe7 10.Qd5 Kf8+–) 7...Ne5 (7...ef3 8.Qf3 Ne7 9.Bf6 Nf6 10.Qf6 Bf5+–) 8.Ne5 Be5 9.Qh5 Ke7 (9...Kf8 10.c3+–) 10.Qh7 Ke6 (10...Kd6 11.Nc3 Be6 12.Bg7+–) 11.Nc3 (11.d4 ed3 12.c3 Ne7+–) 11...Ne7 12.Bg7 b6 (12...Nf5 13.Be2 Kd6 14.g4 Ng7 15.Qg7+–) 13.Be2 (better 13.f3 ef3 14.gf3+–) 13...Qd7 (13...a6+–) 14.Bg4 Kd6 15.Bd7 (15.Bd7 Bd7 16.0-0-0+–) 1–0. GuestJLXB – zhaulsan, freechess.org, 2020.

5.e3 e4 6.Bg7 Ngf6 7.Bh8 Ng4 (7...ef3 8.Qf3 Ne4+-) 8.Nd4 (better 8.h3 Nh6 9.Nh2 Nf6+-) 8...f5 (8...Qg5+-) 9.Ne6 Qf6 (9...Qh4 10.g3 Qe7 11.Ng7 Kd8 12.Nf5 Qf8 13.Qg4 Qh8 14.Nd6 cd6+-) 10.Bf6 (10.Bf6 Ndf6 11.Nf4+-) 1-0. WG_ Anonymous – Anonymous, lichess.org, 2021.

5.e3 Qe7 6.c4 c6 7.d4 e4 8.Nfd2 Ngf6 9.c5 Bc7 10.Nc3 h5 11.Qa4 cb5 12.Nb5 Bb8 13.Ba3 Qe6 14.Be2 0-0 15.0-0 Re8 16.Rab1 Nf8 17.Nd6 Bd6 18.cd6 Bd7 (18...h4 19.h3+=) 19.Qd1+/- g6 (better 19...Reb8!?+/-) 20.Rb7+- N8h7 (20...Reb8 21.Qb3 Rb7 22.Qb7+-) 21.Bc5 Reb8 22.Qb3 Rb7 23.Qb7 Re8 (23...Qe8 24.Rb1+-) 24.Qa7 Ng5 (24...h4 25.h3+-) 25.Rb1 Ng4 26.h3 Nh6 (26...Nf6+-) 27.Rb7 Bc8 (27...Bc6 28.d7 Bb7 29.de8R Qe8 30.Qb7+-) 28.d7 (28.d7 Bb7 29.de8R Qe8 30.Qb7+-) 1-0. onur604 (2320) - killer81 (2230), Casual Rapid game, lichess.org, 2021.

5.e3 Qe7 6.c4 Ngf6 7.cd5 Nd5 8.Be2 0-0 9.0-0 c6 10.a4 (10.bc6 bc6 11.d3 Rb8=+) 10...N7f6 (10...e4 11.Ne1=+) 11.d4 e4 12.Ne5 Nd7 (12...cb5 13.ab5 Be6 14.Nd2=+) 13.Nc4= Bb8 (better 13...cb5!? 14.ab5 Bb4=) 14.Ba3+– c5 15.dc5 Qh4 (better 15...Qe6!?+–) 16.g3+– Qg5 17.c6 Ne5 18.Bf8 Kf8 19.cb7 Bb7 20.Na5 Bc8 21.Qd4 Nf3 (21...Be6 22.Qe4 f5+–) 22.Bf3 ef3 (22...Be6 23.Qe4 Be5 24.Qh7+–) 23.Qc5 (23.Qc5 Qe7 24.Qd5+–) 1–0. onur604 (2315) – doomex (1950), lichess.org, 2020.

5.e3 Qe7 6.c4 Ngf6 7.g4 h6 (7...dc4 8.g5 Ne4 9.Qc2 (9.Bc4 Ng5 10.Nc3 Nb6 11.Be2 Nf3 12.Bf3 Nc4–/+) 9...Ng5 10.Ng5 Qg5 11.h4–/+ (11.Qc4 0-0 12.Nc3 Nc5–/+) 11...Qg6 12.Qg6 hg6–/+) 8.Rg1 (8.cd5!? e4 (8...Ng4 9.Rg1=+ f5 10.d3 a6 11.ba6 Ra6 12.d4 Rb6=; 8...Nb6 9.Nc3 Bg4 10.h3 Bh5 11.Be2 Nbd5 12.Nd5 Nd5–/+; 8...Nd5 9.d4 e4 10.Nfd2 N7f6 11.Be2 Be6 12.Nc3 Nc3–/+) 9.g5 hg5 10.Ng5 Nd5 11.f4 ef3 12.Nf3 Bg3–+; 8.d4 dc4 (8...e4 9.Nfd2 dc4 10.Nc4 0-0 11.Nd6 cd6 12.Rg1 Nh7=) 9.Bc4 Ng4 10.h3 Ngf6 11.de5 Ne5 12.Ne5 Be5–/+) 8...e4–/+ (8...dc4 9.Bc4 Nb6 10.Bb3 e4 11.g5 hg5 12.Ng5 Nbd5=+) 9.g5 (9.Nd4 A) 9...Bh2 10.Rh1 (10.Nf5 Qf8–/+ 11.Rg2 Be5 12.Ba3 Nc5–/+) 10...Be5 11.g5 Ng8 12.cd5 Qg5–/+; B) 9...Ne5 10.cd5 Bg4 11.Qc2 0-0-0 12.Nc3 Bc5–+) 9...hg5–+ (9...ef3?! 10.gf6 gf6 11.cd5 (11.h3= dc4 12.Bc4 Ne5=+) 11...Bh2 12.Rh1 Bd6=) 10.Ng5 dc4 (10...Bh2 11.Rh1 Rh6 (11...Qb4–/+ 12.Ba3 Qa5–/+) 12.d3 ed3–+) 11.Bc4=+ Ne5 (< 11...Bh2 12.Bf7 Kd8+/– (12...Kf8 13.Ne6 Kf7 14.Rg7 Ke8 15.Re7 Ke7 16.Qb3+/–); 11...Rh2?! 12.Bf7 Kf8 13.d4=+; 11...Rf8 12.f4 Nb6=+) 12.Qb3? (better is 12.Be5!? Qe5= (12...Be5 13.Nf7 Rh2 14.Ne5 Qe5 15.Nc3=+)) 12...Nc4–+ 13.Qc4 Bf5 14.Nc3 Rh2 15.Nd5=+ Nd5 16.Qd5 g6 17.Qb7 Rd8 18.Qc6 Qd7 19.Qc2 Be7–/+ 20.0-0-0? Qd5 21.f3 Bg5 22.Rg5=+ ef3 23.e4!+= Qb5 24.ef5 f2 25.Qe4 Kd7 26.Qf4 Qe2?? 27.fg6+– Kc8?? 28.gf7 Qd1 29.Kd1 Rd2 30.Kd2 f1Q 31.Qh2 (31...Qf7 32.Rg7+–) 1–0. Needleman,Gaston (2435) – Henderson,Einar (2115), San Luis ARG zt, 2007.

5.e3 f5 6.c4 Ngf6 7.cd5 Nd5 8.Bc4 c6 9.d3 Qa5 (9...Qf6 10.Nbd2=) 10.Nbd2 0-0 (10...a6 11.a4 Qd8+= (11...ab5?? 12.ab5 N5b6 13.Ra5 Ra5 14.Qb3+–)) 11.e4 fe4 12.de4 N7b6 13.0-0 (13.Be5? Nc4 14.Bd6 Nd6 15.ed5 Re8 16.Kf1 Qb5 17.Kg1 Qd5–+; worse 13.Ne5 Be5 14.Bd5 cd5 15.Be5 Nc4–/+ (15...Qb5?! 16.Qb3 Qe8 17.Qg3=)) 13...Nc4 (better 13...Rf3!? 14.gf3 Bb4+–) 14.Nc4+– Qc7? (14...Qb5 15.Nd6 Qb2 16.ed5 Bg4+–) 15.ed5 cb5 16.Nd6 Qd6 17.Be5 Qg6 18.Qb3 Kh8 (18...Bg4 19.Nd4+–) 19.Bg3 (19.Rac1 Bg4 20.Nd4 Rad8+–) 19...a6 20.a4 (20.Rfe1 Bf5+–) 20...Bd7 (20...ba4 21.Ra4 b5 22.Ne5+–) 21.Ne5 Qf5 22.Nd7 Qd7 23.ab5 ab5 24.Ra8 (24.Rab1 Rf5 25.Rfd1 b4+–) 24...Ra8 25.d6 h6 (25...b6 26.Re1 Re8 27.Re8 Qe8 28.h3+–) 26.Be5 Ra4 (26...Rc8 27.Rb1+–) 27.f4 (27.Rc1 Re4 28.f4 Qg4+–) 27...Qc6 (27...Rc4+–) 28.Qf7 (28.Qf7 Qb6 29.Kh1 Qg1 30.Kg1 Rf4 31.Qg7) 1–0. onur604 (2320) – Tsnrerednil_58 (1950), lichess.org, 2020.

5.e3 f6 6.c4 c6 7.a4 Ne7 8.Be2 0-0 9.d4 e4 10.Nfd2 dc4 (10...f5 11.Ba3 Ba3 12.Ra3=) 11.Nc4 (11.Bc4!? Kh8 12.Ne4 cb5 13.ab5 Bb4 14.Bc3+/-) 11...Bc7 12.Nc3 a6 (12...f5!?=) 13.Ne4 (13.bc6 Nc6 14.d5 Nb4+/-) 13...cb5 (13...ab5!? 14.ab5 Ra1 15.Ba1 f5+/-) 14.ab5 Ng6 15.0-0 Nb6? (15...f5 16.Qb3 Kh8 17.Ned6+-) 16.Qb3 (better 16.Nb6!? Bb6 17.Qb3 Kh8+-) 16...Be6 17.Nc5 Bc4 18.Bc4 Nc4 19.Qc4 Kh8 (19...Rf7 20.Nb7 Qc8+-) 20.Ne6 (20.Nb7?! Qc8 21.Nc5 ab5 22.Qb5 Rb8+-; 20.ba6?! Qd6 21.f4 ba6 22.Na6 Bb8+-) 20...Qe7 (20...Bh2 21.Kh2 Qd6 22.Kg1+-) 21.Nf8 (21.Nc7 ab5 22.Nb5 Qd7+-) 21...Rf8 (21...Nf8 22.Rfc1 Bd6 23.ba6+-) 22.Ba3 Bd6 23.Bd6 Qd6 24.ba6 ba6 25.Ra6 Qd7 26.Rc1 Qg4 27.h3 Qg5 (27...Qe4 28.Ra7+-) 28.Rc6 (better 28.Ra8! f5 29.Rf8 Nf8+-) 28...Nh4 29.Qf1 h5 30.Rc8 Rc8 31.Rc8 Kh7 32.Rc5 (32.Qb1 f5 33.Qb7 Qf6+-) 32...Qg6 33.Rb5 Qe4 (33...f5 34.Kh1 Qc6 35.d5+-) 34.Qb1 (34.Rh5 Kg6 35.Rb5 Nf5+-) 34...Nf3 (34...Qb1 35.Rb1 Nf5+-) 35.Kh1 (35.Kh1 Qb1 36.Rb1+-) 1-0. BeepBeepImAJeep (2640) - Gafiiis (2280), lichess.org, 2016.

5.e3 f6 6.c4 c6 7.d4 e4 8.Nfd2 Ne7 9.c5 Bc7 10.a4 0-0 11.Be2 Nf5 12.0-0 Nh6 13.f3 f5 14.fe4 fe4 15.Rf8 Nf8 16.Nf1 Ng6 17.Ng3 Qh4 18.Nd2 Bg3 19.hg3 Qg3 20.Nf1 Qg5 21.Qe1 Nh4 22.Qg3 Qg3 23.Ng3 N6f5 24.Nf5 Nf5 25.Bc1 Ng3 26.Kf2 Ne2 27.Ke2 Bg4 28.Kd2 Rf8 29.Kc3 Rf2 30.bc6 bc6 31.Rb1 Rg2 32.Rb7? (32.Rb7 h5 33.Bd2–+; better is 32.Rb8 Kf7 33.Ra8–+). chevin – Diversion, Live Game Caissa's Web, 2004.

5.e3 f6 6.Be2 Ne7 7.c4 (7.0-0 0-0=) 7...0-0 (7...dc4 8.Qc2+=) 8.cd5 Nd5 9.Qb3 (better is 9.Qc2 Nb4 10.Qb3 Kh8 11.d4=) 9...N7b6?? (better is 9...Nc5 10.Qd1 e4+=) 10.e4+– Kh8 (10...Be6!? 11.ed5 Bd5+/–) 11.ed5 Bf5 12.0-0 e4 13.Nd4 Bg6 (13...Qd7+–) 14.Ne6 Qe7 15.Nf8 Rf8 16.Nc3 (16.Bd4 Bf4+–) 16...f5 (16...Qe5 17.g3+–) 17.Qd1 (17.d3 e3 18.f4 Bf7+–) 17...f4 (17...Qe5 18.g3 f4+–) 18.Bh5 (18.f3 Bc5 19.Kh1 ef3 20.Rf3 Qd6+–) 18...Bf5? (18...f3 19.Bg6 Bh2 20.Kh1 Qh4 21.Bf5 Rf5 22.Re1 Be5 23.Kg1 Qh2 24.Kf1 Qg2) 19.Bg4 (19.Re1 Nc4 20.Bc1 e3+–) 19...Bg6 20.Ne2 f3 21.Ng3 Qg5 22.Bh5 Bh5+= 23.Nh5?? Qg2 (23...Qh5?! 24.h3 Qh4 25.Bd4 fg2 26.Kg2–+) 0–1. OPA – Schnick, Live Game Caissa's Web, 2004.

5.e3 Qf6 6.c4 c6 7.a4 Ne7 8.d4 e4 9.Nfd2 Qg6 10.g3 Nf6 11.Bg2 0-0 12.0-0 Bg4 13.Qc2 Nh5 14.f3 ef3 15.Qg6 Ng6 16.Nf3 Bf3 17.Bf3 Nf6 18.c5 Bc7 19.Nd2 Rae8 20.Rae1 Ne4 21.Ne4 de4 22.Bg2 f5 23.Bh3 Ne7 24.Kf2 g6 25.Ke2 Nd5 26.Rf2 Nb4 27.Rh1 Nd3 0–1. A_VB – botnedzzz, lichess.org, 2018.

5.e3 h6 6.c4 c6 7.bc6 bc6 8.cd5 cd5 9.Nc3 Ne7 10.Nb5 Bb8 11.Be2 a6 12.Nc3 0-0 13.Ba3 Bb7 14.Rb1 Bc7?? (better is 14...Bc6+=) 15.Rb7+– (15.Rb7 Nb6 16.Ne5+–) 1–0. b4_player – johanna, internet, 2013.

5.g3 a6 6.e3 (6.Nc3 d4 7.Ne4 Be7–/+) 6...ab5–/+ 7.Bh3 (7.Bb5!? c6 8.Be2–/+) 7...Ngf6–+ 8.Nc3 c6 9.0-0 0-0 10.a3 e4 11.Nd4 Ne5 12.Bg2 Bg4 13.Nce2 Nc4 14.Bc3 Na3 15.h3 Bd7 16.d3 b4 17.Bb2 c5 18.Nb3 Bc6 19.d4 (19.Qc1 Qe7–+) 19...c4 20.Ba3 (20.Nd2 Ba4 21.Ba3 ba3–+) 20...Ra3 (20...cb3?! 21.Bb2 Ra2 22.Qb1–+) 21.Ra3 ba3 22.Qa1 (22.Nd2–+) 22...cb3 23.cb3 Qa5 24.Qa2 Rc8 25.Rc1 Bd7 26.Rc8 Bc8 27.Kh2 Qe1 28.Ng1 Bb4 29.Ne2 Qd2 (29...Qd2 30.Qd2 Bd2–+) 0–1. mic (2220) – pierred (2790), net–chess.com, 2016.

5.g3 Ngf6 6.Bg2 e4 7.Nd4 0-0 8.0-0 Re8=. Malmstroem.

5.c4 dc4

6.Qc2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 b6 10.e4 Bb7 11.Nc3 (11.Bc4 Qa8 12.Ng5 f6–/+) 11...Qa8 12.Bb2 Ngf6 13.Bc4 Ne4 14.0-0 (14.Bf7 Ke7 15.Bc4 Nc3 16.Qc3 Bf3 17.gf3 Rf8=) 14...Nc3 15.Ra1 Qd8 16.Qc3 Qf6 17.d4 Bf3 18.Qf3 Qf3 19.gf3 0-0 20.Ra7 ed4 21.Bd4 Re8 22.Be3 h6 23.f4 Nf6 24.Kg2 Rd8 25.f5 Ng4 26.h3 Nf6 27.Bd4 Nd7 28.Be2 Re8 29.Bf3 Nc5 ½–½. Taulien,Hans_Juergen – Fiedler,Peter, remoteschach.de, 2002.

6.e3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 h6 10.Bc4 e4 11.Qc2 Ngf6 12.Nd4 Ne5 13.Be2 Bg4 14.0-0 Qd7 15.f3 ef3 16.Nf3 Bf3 17.gf3 Qh3 18.Rf2 0-0 19.f4 Neg4 20.Rg2 Ra8 (20...h5!?=) 21.Bd4+= Qh4 22.h3 Qh3 23.Qf5 g6 24.Rg4 (worse 24.Bg4 Qg2 (24...gf5?? 25.Bh3 Ng4 26.Bg4 fg4 27.Rg4 Kf8 28.Nc3+-) 25.Kg2 gf5 26.Bf5 Be7-/+) 24...Qg4 25.Qg4 (worse 25.Bg4 gf5 26.Bf5 Be7-/+) 25...Ng4 26.Bg4 Ra5 27.Nc3 Bb4 28.Nd5 (28.Be2 c6+/-) 28...Rb5+= 29.Nc7 Ra5 30.Bf3 Bd2 31.Bb7 g5 32.fg5 hg5 33.Kf2 1-0. DEFFM – GuestPBNW, freechess.org, 2021.

6.e3 e4 7.Bg7 ef3 8.Bh8 fg2 9.Bg2 Qg5 10.0-0 (10.Be4 Ngf6 11.Qf3 Be5+/-) 10...Ndf6 11.f4 Qg6 (11...Qb5!? 12.Nc3 Qa5+/-) 12.Kh1+- Ne4 13.Qf3 Nc5 14.Rg1 Bg4 (14...Ne7!?+-) 15.Qg4! Qg4 16.Bc6! bc6 17.Rg4 0-0-0 18.Nc3 (better 18.bc6 Nh6 19.Rh4+-) 18...f6? (18...cb5 19.Nb5 Nh6+-) 19.Rag1 (19.bc6!? f5 20.Rg7 Ne7 21.Rh7 Nc6+-) 19...Nh6 20.Rh4 Nf5?! (20...Rh8 21.Rh6 cb5 22.Nb5 Ne4+-) 21.Rh7 cb5 22.Nb5 Ne4 23.Na7 Kb7 24.Nb5 Kc6 (24...Be7 25.Nc3 Nf2 26.Kg2 Rd2 27.Kf3+-) 25.a4 (better 25.Nc3!? Nd2 26.e4 Bb4+-) 25...Nd2 26.Bf6 Rf8 (26...Ra8 27.Rg5 (27.Nd6?! cd6 28.Ra1 Ne3+-) 27...Ne3 28.Nd4 Kb6 29.Rb5 Ka6 30.Nc6+-) 27.Bd4 Nf3 (27...Nd4 28.Nd4 Kd5+-) 28.Rg6 N5h4 (28...N3d4 29.Rc7 Kb6 30.ed4 Rg8+-) 29.Rc7 (29.Rc7 Kd5 30.Nc3) 1-0. onur604 (2320) - Stanleytime (2205), Casual Rapid game, lichess.org, 2021.

6.e4 a6 7.Nc3 (7.ba6 b5+= (7...Ra6 8.Bc4 Rb6 9.Qc2 Ngf6 10.0-0 0-0 11.Re1 Re8 12.Nc3 Nc5 13.Nb5 Be6) 8.a4 Ra6 9.Na3 Ba3 10.Ra3 Qe7 11.Qc1 c6 12.ab5 cb5 13.Qa1 Qe6) 7...ab5 (7...Nb6 8.ba6 (8.d4 Bg4 9.ba6 Bf3 10.gf3 Ra6 11.de5 Be5 12.Qd8 Kd8 13.0-0-0 Ke8) 8...Ra6 9.d4–/+ (9.a4 Be6 10.a5 Nd7 11.d4 ed4 12.Nd4 Bb4 13.Qa4 Ba5) 9...Ba3 10.Ba3 Ra3 11.Nb5 Ra5 12.a4 c6 13.Qd2 Ra4; 7...Ngf6 8.Bc4 Nb6 9.Be2 ab5 10.Nb5 0-0 11.Qc2 Bg4 12.a4 Nbd7 13.0-0 Nc5; 7...g5 8.h3 Nb6 9.d4 f6 10.a4 a5 11.de5 fe5 12.Be2 Qf6 13.Bc1 g4) 8.Nb5= Ngf6 (8...c3 9.Bc3 Ngf6 10.Nd6 cd6 11.d3 0-0 12.Be2 Nc5 13.Qd2 Qc7) 9.Qc2 (9.Bc4 0-0 10.0-0 Ne4 11.Qe2 c6 12.Qe4 cb5 13.Bb5 Nc5) 9...0-0 (9...Bc5 10.Qc4 0-0 11.Ne5 Bf2 12.Kf2 Ne5 13.Be5 Ng4) 10.Bc4 Qe7 (10...Bc5 11.d4 ed4 12.0-0 Re8 13.Rad1 Ne4) 11.0-0 c6 (11...Nb6!?= 12.Bb3 Bg4 13.d4 Bf3) 12.Nd6+= Qd6 13.d4 (13.a4 c5) 13...ed4 14.Bd4 b5? (better is 14...Qf4 15.e5 Ng4+=) 15.e5+– Qb4 16.Bd3 Nd5 (16...Nh5 17.Qc6 Qa3 18.Qe4+–) 17.Bh7 Kh8 18.Qc6 Kh7 (18...Ra3 19.Qd5 Kh7 20.e6 fe6 21.Qh5 Kg8 22.Ng5+–) 19.Qa8 (worse is 19.Qd5 Ra6 20.Rfc1 Kg8+–) 19...Nf4 (19...N7b6 20.Qa7 Na4 21.e6+–) 20.Qe4 Ng6 21.Rab1 Qe7 22.Rfc1 (worse is 22.Rb5 Ba6 23.a4 Bb5 24.ab5 Kg8+–) 22...f5 (22...b4 23.Rc4+–) 23.Qa8 Nh4 (23...Qe8 24.Qc6 Kg8 25.Qb5+–) 24.Rc8 Rc8 25.Qc8 Nf3 26.gf3 Qg5 (26...b4 27.Rc1 Qe6 28.Rc4+–) 27.Kh1 Qf4 28.Qd7 Qf3 29.Kg1 Qg4 30.Kf1 Qh3 31.Ke1 Qg4 32.e6 Qe4 33.Kd2 Qb1 34.Qg7 1–0. pierre – quarz, internet, 2010.

6.e4 Qf6 7.Bc4+= Qg6 8.0-0 Nb6 (worse is 8...Qe4 9.Bf7 Kf8 10.Nc3+=) 9.Bb3 Bg4 (worse is 9...Qe4 10.Re1 Qg4 11.h3+/–) 10.d4 Rd8 (worse is 10...Qe4 11.Bf7 Kf7 12.Ng5 Ke7 13.Ne4 Bd1 14.Rd1 ed4 15.Bd4+=) 11.a4 (11.Qd3 Bf3 12.Qf3 ed4=) 11...ed4 12.a5 Nd7 (12...Nc8!?+=) 13.Bd4= Bc5 (13...Qe4? 14.Re1 (14.Bg7?! Bf3 15.Qf3 Qf3 16.gf3 Be5+–) 14...Bf3 15.Re4 Be4 16.Qg4+–) 14.Bc3 White intends e5 (14.Ra4 Nb6 15.ab6 Bd4 16.Rd4 Rd4 17.Nd4 Bd1 18.ba7 Bb3 19.a8Q Ke7 20.Nb3 Qe4+–) 14...Ngf6 (14...Qe4 15.Re1 Bf2 16.Kf2+–) 15.Nbd2 c6 16.a6 cb5 (16...Ne4? 17.Ne4 Qe4 18.Re1 (18.Bg7 Bf3 19.Qf3 Qf3 20.Rfe1 Be7 21.gf3 Rg8–+; 18.ab7?! 0-0+=) 18...Bf2 19.Kf2+–) 17.e5 (17.ab7 Ne4 18.Ne4+–) 17...b4–/+ 18.Bb2 Nh5 19.Nh4 (19.Bc2!? Qb6 20.ab7 Qb7 21.Be4=) 19...Bd1–/+ 20.Ng6 Bb3 (20...hg6 21.Rfd1 ba6 22.Ne4=) 21.Nh8–/+ Bd5 22.ab7 Ke7 23.Nf7 The passed pawn on e5 quickly leads to threats 23...Kf7 24.Rfd1 (24.Rfe1 Nf4 (24...Bb7?! 25.e6 Kg6 26.ed7=) 25.Ne4 Rb8+=) 24...Ke7 25.e6 Ke6 26.Re1 (26.g4 Nf4 27.Bg7 Bb7–+) 26...Kf5 27.Red1?! (27.Ra5 Bb7 28.Nb3 Kg6 29.Nc5 Nc5 30.Rc5 a6+=) 27...Nf4 (better is 27...Nhf6!? 28.Kf1 Bb7 29.Nb3–+) 28.Nb3 Bb6 (28...Ne2 29.Kf1 Ng3 30.hg3 Bc4 31.Kg1 Bb3 32.Rd7+–) 29.Na5 Nc5 (29...Bg2 30.Rd7 Rb8 31.Rf7 Ke4 32.Nc6+– (32.Rg7?! Kf3 33.Rg3 Ke2 34.Rg2 Ng2+–)) 30.Nc6 Nb7 31.Nd8 Nd8 (31...Bd8 32.Ra7 Bb3 33.Rd7+/–) 32.g3 Ne2 (32...Nh3 33.Kf1 Bf3 34.Rd7–+) 33.Kf1 Bc4 34.Ke1 Ne6 35.Rd7 N2d4 36.Kd1 (36.Rc1 Bb5 37.Rf7 Ke4–+) 36...Be2 (36...Bb5 37.Re7–+) 37.Kd2 Bb5 38.Raa7 (38.Rd5 Kg4 39.h3 Kf3–+) 38...Nf3 39.Kc2 Bd7 40.Rd7 Bf2 (40...Nh2?! 41.Rd5 Kg4 42.Rd6 b3 43.Kb1 Bf2 44.Re6–+) 41.Rf7 Kg4 42.Bg7 Bg1 (42...Ng7?! 43.Rg7 Kf5 44.Rf7 Ke4 45.Kb3–/+) 43.Bb2 (43.Re7 Nc5–+) 43...Bh2 (worse is 43...Nh2 44.Rh7 Nf3 45.Kb3–+) 44.Rh7 Nc5 (44...Bg3!? 45.Bf6–+) 45.Rc7 Bg1 (45...Ne1 46.Kd1 Ncd3 47.Rc4 Kf3 48.Rc8–+) 46.Rg7 Kh3 47.Rg8 b3 48.Kd1 Na4 49.Bf6 (49.Ke2 Nd4 (49...Nb2?! 50.Kf3 Bd4 51.Rg5+=) 50.Bd4 Bd4–+) 49...Bf2 (49...b2!? 50.Kc2 Bd4 51.Bh4–+) 50.g4 Bd4 51.Bd4 Nd4 52.Rb8 Nc3 53.Kc1 Kh4 (53...Kg4 54.Rb3 Nce2 55.Kd2=) 54.g5? (better is 54.Rb3! Nce2 55.Kd2+=) 54...Nce2 (54...Kg5 55.Rb3 Ne4 56.Re3=) 55.Kb2 Kh5 (better is 55...Kg5 56.Rb3 Nc6–+) 56.Rb3= Nb3 (56...Nf5 57.Rf3 Nd6 58.Rd3 Nc4 59.Kb3=) 57.g6 ½–½. b4_player – opponent, gamecolony.com, 2007.

6.e4 Ngf6

7.Bc4 0-0

8.0-0 Nb6 9.Bb3 Qe7 10.d4 e4 11.Ne5 Be6 12.Nd2 Nbd7 13.Ndc4 Bc4 14.Nc4 a5 15.Rc1 Nb6 16.Nb6 cb6 17.h3 Ba3 18.Ba3 Qa3 19.Rc7 a4 20.Bc4 Ne8 21.Rd7 Rc8 22.Qc1 Qc1 23.Rc1 Kh8 24.a3 f5 25.Kf1 f4 26.ef4 Rf4 27.Rb7 Nd6 28.Rb6 Rcf8 29.Rd6 Rf2 30.Kg1 e3 31.Re6 1–0. onur604 (2320) – Bariss_Ertan (2105), lichess.org, 2020.

8.0-0 e4 9.Nd4 Ne5 10.Be2 h5 (10...a6 11.f4 ef3 12.Nf3 Nf3 13.Rf3+=) 11.Nc3 (11.Bh5? Nh5 12.Nc3 Nf6–+) 11...Bg4 12.f3 (12.f3 ef3 13.Nf3=). Pcmvr – Cybermemere, playchess.de, 2005.

8.0-0 Qe7 9.d4 Nb6 (better 9...e4!? 10.Nfd2 Nb6=+) 10.Bf7 Rf7 11.de5 Be5 (11...Ne4 12.ed6 Nd6 13.Ba3+=) 12.Ne5+/- Rf8 13.f4 Be6? (better 13...Ne4+/-) 14.Ba3+- Qd8 15.Bf8 Kf8 16.Qc2 White intends f5 16...Qd6 17.Nd2 Rd8 (17...Nbd5 18.Ndc4 Qc5 19.Qb3+-) 18.Ne4 Ne4 19.Qe4 g6 (19...Nd5 20.Qh7 Ne3 21.Rfc1+-) 20.f5 Bf5 (20...gf5 21.Rf5 Ke8+-) 21.Rf5 gf5 (21...Kg8 22.Qh4 Re8+-) 22.Qf5 Kg8 23.Qg5 Kf8 (23...Qg6 24.Qd8 Kg7 25.Rf1 Nd7 26.Qd7 Kh6 27.Ng4 Kh5 28.Rf5 Qf5 29.Qf5 Kh4 30.g3 Kh3 31.Ne5) 24.Rf1 (24.Rf1 Qf6 25.Qf6 Kg8 26.Qd8 Kg7 27.Qf8) 1-0. DEFFM – GuestSGKY, freechess.org, 2021.

8.a4 a6 (8...e4 9.Nd4-/+) 9.0-0 ab5 10.ab5 Ra1 11.Ba1 Qe7 12.Nc3 c6 (12...e4 13.Nd4=+) 13.Qb1 (13.bc6 bc6 14.d4 e4=) 13...Nc5 (13...e4!? 14.bc6 bc6=+) 14.d4= ed4 15.Nd4 Nce4 16.Ne4 Qe4 (16...Ne4!? 17.Qb2 Nf6+=) 17.Bd3+/- Qh4 18.bc6?? (better 18.Nf3 Qh6 19.Bf6 Qf6 20.Bh7 Kh8 21.Be4+/-) 18…Qh2 0-1. Jimito100 (2010) - samuelebisi (2000), Rated Bullet game, lichess.org, 2020.

8.d3 b6 9.Nbd2 Bb7 10.a4 e4 (10...c6 11.0-0=) 11.de4+= Ne4 12.Ne4 Be4 13.0-0 Nc5? (better 13...Qe7!?+=) 14.Qd4+- Qf6 15.Qf6 gf6 16.Bf6 Nd7 17.Bc3 Rae8 (17...Nc5 18.Rfd1+-) 18.Rfd1 Ne5 19.Ne5 Be5 20.Be5 Re5 21.f3 Rc5 22.Rac1 Bg6 23.e4 Kg7 24.Bd5 f5 (24...Rc1 25.Rc1 Rc8 26.f4+-) 25.Rc5 bc5 26.Rc1 fe4 27.fe4 Re8 28.Rc5 Be4 (28...Re7 29.Kf2+-) 29.Rc7 Kg6 (29...Kf6 30.Be4 Re4 31.Ra7 Rb4+-) 30.Bf7 (30.Bf7 Kf5 31.Be8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.d3 Nb6 9.Be5 Nc4 10.dc4 Be5 11.Ne5 (11.Qd8 Rd8 12.Ne5 Ne4+=) 11...Qd1 (11...Qe7 12.Nf3=) 12.Kd1+= Rd8 13.Ke2 Bf5 14.Nd2 Rd6 15.Rhd1 Rad8 16.Rac1 Ng4 17.Ng4 Bg4 18.f3 Bf5 19.Nb3 Bd3 (19...Rd1!? 20.Rd1 Rd1 21.Kd1 Bd3+/-) 20.Kf2+- Bf5 21.Rd6 Rd6 22.c5 Rd8 23.Nd4 Bd3 (23...Bc8 24.c6 b6 25.Rc4+-) 24.Rc3 Bb1 25.Ra3 g6 (25...Ra8+-) 26.Ra7 b6 27.Rc7 bc5 28.Nc6 Rd2 29.Kg3 Ba2 (29...Rb2 30.a4 Bd3+-) 30.b6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.d3 e4 9.de4= Ne4 10.0-0 Nb6 11.Bb3 Qe7 12.Nc3 Nc3 13.Bc3 Bg4? (better 13...Rd8!? 14.Qe2 Be6=) 14.Qd4+/- Qf6 15.Qf6 gf6 16.Bf6 Rae8 17.Nd4 Be5 (17...a6 18.h3 Be6 19.Rfd1+-) 18.Be5+- Re5 19.Rfc1 Rc8 20.a4 Nd7 21.h3 Bh5 22.Rc3 Nc5 (22...Rc5 23.Rac1 Rc3 24.Rc3+-) 23.Bc2 (23.f4 Ne4 24.Rc2 Re7+-) 23...Ne6 (23...Bg6+-) 24.Bf5?? (better 24.Ne6 fe6 25.f4+-) 24...Nd4=+ 25.Bc8 Ne2 26.Kh2 Nc3 27.g4 Bg6 28.f4 Re3 (28...Re8!? 29.Bb7 Bb1-+ (29...Re3?! 30.f5=)) 29.f5-/+ b6 30.fg6 hg6 31.h4 Re2 32.Kg3 Ra2 33.Ra2 Na2 34.h5 gh5 35.gh5 Nc3 36.Bf5 Na4 37.h6?? (better 37.Kf4-/+) 37...Nc3-+ 38.Bd3 Nd5 (better 38...Nb5 39.Bb5 Kh7-+) 39.Kg4 Ne7 (39...Nb4 40.Be4-+) 40.Be4 Ng6 (40...Nc8 41.Kg5-/+) 41.Kf5 (better 41.Bg6 fg6 42.Kf4=) 41...Kh7?? (better 41...Nf8=+) 42.Kg5+- Kh8 43.Bg6 fg6 (43...Kg8 44.Bf5 a5 45.ba6 c5 46.a7 f6 47.Kf6 b5 48.a8Q) 44.Kg6 Kg8 (44...c5 45.bc6 Kg8 46.h7 Kh8 47.c7 a6 48.c8Q) 45.h7 Kh8 46.Kh6 (46.Kh6 a6 47.ba6 c6 48.a7 c5 49.a8Q) 1-0. onur604 (2320) - dmartinezn (2300), Casual Rapid game, lichess.org, 2021.

6.e4 Ngf6

7.Qc2 0-0 8.Bc4 c6 9.bc6 bc6 10.0-0 Nb6 (10...Rb8!? 11.d4 Qe7=) 11.Ne5 Be5 12.Be5 Re8 13.Bf6 Qf6 14.Na3 Qg6 (14...Qe7 15.Qb3+=) 15.f3 Bh3 (15...Rd8 16.Rad1+/-) 16.d4 Rad8 17.Rad1 Na4?? (better 17...Be6+/-) 18.Kh1+- Nc3 19.Rd2 (19.gh3?! Nd1 20.Rd1 Qf6+-) 19...Ne4 (19...Nb5 20.Bb5 (20.gh3?! Na3 21.Qc3 Nc4 22.Qc4 Qf6=) 20...cb5 21.gh3+-) 20.fe4 (20.gh3?! Nd2 21.Qd2 Qf5+=) 20...Bg4 (20...Be6 21.Ba6 Bc8 22.Bc8 Rc8+-) 21.Bf7 (21.Bf7 Qf7 22.Rf7 Kf7 23.Qc6+-) 1-0. WG_ Anonymous – Anonymous, lichess.org, 2021.

7.Nc3 0-0 8.Bc4+= Nb6 9.Be2 Nh5 10.d4 Nf4 11.0-0 ed4 12.Qd4 Qd7 13.h3 f6 14.Rfe1 (14.Bd1 Kh8+=) 14...Ng2 (14...Qe8 15.Bf1+=) 15.Kg2= Qh3 16.Kg1 Qg4 17.Kf1 Qh5 Do you see the mate threat? 18.Bd1 Bh3 (18...Be6 19.Ng1 Qg6 20.Bb3 Bb3 21.ab3=) 19.Ke2+= Bg2 20.Qe3 Kh8 21.Kd3 Rae8 (21...Rad8!? 22.Nd4 Qe8+=) 22.Nd4 Qc5 23.Bb3 Be5 24.Nf3 (24.f4 Bd4 25.Qd4=) 24...Qd6? (24...Rd8 25.Kc2 Qe3 26.Re3 Bf4+–) 25.Kc2+/– Bf4 26.Ba3 Qa3 27.Qf4 Qc5 28.Nd2 c6 29.bc6 Qc6? (29...Rc8 30.Re3 Qc6 31.Rg1+–) 30.Qg3 (better is 30.Qg4!? Rc8 31.Re3 Na4 32.Ba4 Qa4 33.Kb2 Qb4 34.Nb3 Rc3 35.Rc3 Qe4 36.Qe4 Be4+–) 30...Rc8 31.Re3 White terminates the opponent with strong threats 31...Na4 32.Ba4 Qa4 33.Kb2 Qb4 34.Nb3 Rc3 35.Rc3 (35.Qg2?! Rb3 36.ab3 Qd2 37.Ka3 Qa5 38.Kb2 Qd2 39.Ka3 Qa5 40.Kb2 Qd2=) 35...Be4 36.Rc7 Threatening mate: Qxg7 36...Bg6 37.Rd1 Re8 38.f4 Qe4 39.Rdd7 Rg8 40.Rb7 a6 41.Ra7 (41.Ra7 Qe2 42.Ka3+–) 1–0. Taulien,Hans_Juergen (2350) – Baensch,Hans (2095), RSX10D – XMAS–1, 2003.

7.Nc3 Nb6–/+ 8.a4 Bc5 9.Qc2 (9.Ne5? Qd4 10.Qe2 Qe5–+) 9...Be6 10.a5 Nbd7 11.Nd1 a6 12.Bc4 Bc4 13.Qc4 0-0 14.0-0 (14.Be5? Ne5 15.Ne5 Bd4 16.ba6 Ra6 17.Nf7 Rf7–+) 14...ab5 15.Qb5 Ne4 16.Qb7 (16.Ne5? Ne5 17.Be5 Qg5–+) 16...Nd6 17.Qd5 e4 18.Ne5 Qg5 19.d4 ed3 (19...Bd4 20.Bd4) 20.h4! Qf5 (20...Qh4 21.Nd7) 21.Ne3?? (better is 21.g4 c6 22.gf5 cd5 23.Nd7+–) 21...Be3= 22.fe3 Nf6 (22...Qh5!? 23.g4 Qh4 24.Nd7 Qg4 25.Qg2 Qg2 26.Kg2 Rfe8=) 23.Qa8= Qf1 24.Kf1 (24.Rf1 Ra8) 24...Ra8 25.Nd3 Nfe4 26.Be5 (26.Ke2!?+=) 26...Nd2=+ 27.Kg1 Nb5 (27...Nb3 28.Ra4 Na5 29.Nc1+=) 28.a6+= f6 29.Bd4 Nb3 30.Ra4 Kf7 31.h5 c6 32.Bb6 g6 33.a7 Ke6 34.Ra2 Kd5 35.Nf4 Ke5 (35...Ke4!?+/–) 36.Rb2 Nc1 37.hg6 1–0. Taulien,Hans_Juergen – Hort,Wolfgang, RSS7E pro–1 remoteschach.de, 2003.

7.Bc4 Ne4 8.Qe2 Nef6 9.Ne5 0-0 10.d4 Nb6 11.Bb3 Bb4 12.Nd2 Nfd5 13.0-0 Nf4 14.Qf3 Bd2 15.Rfd1 Qg5 16.Ba3 Be6 17.h4 (17.Rd2? Nh3 18.Kh1 Qd2 19.gh3 Qd4–+; 17.Bf8?! Rf8 18.h4 Qh6 19.Rd2 Nh3 20.gh3 Qd2=) 17...Qh4 18.Be6 Ne6 19.Bf8 Bf4 20.g3 Qg5 21.Bc5 Be5 22.Bb6 Bg3 23.Qg3 (23.fg3 ab6) 23...Qg3 24.fg3 ab6 25.d5 Nc5 26.d6 cd6 27.Rd6 h6 28.a3 Re8 29.Rb6 Re3 30.Kf2 Rc3 31.a4 f5 (31...Rc2 32.Ke3 Rc3 33.Kd4 Rc2+–) 32.a5+– g5 33.Kg2 (33.a6 Ne4 34.Kf1 ba6 35.ba6 Rf3 36.Ke2 g4+–) 33...Rc2 34.Kf1 Nb3 35.a6 ba6 36.Raa6 Rc1 37.Ke2 Rc7 38.Rg6 Kf7 39.Raf6 Ke8 40.Rg8 Ke7 41.Rh6 Nd4 42.Ke3 Nb5 43.Rg5 Ke8 44.Rf5 Re7 45.Kf4 Nc3 46.Ra5 (46.g4 Ne2 47.Kg5 Nc3+–) 46...Kf8 47.Ra8 Kg7 48.Rah8 Nd5 49.Kf5 Nf6 50.Rd8 (50.Rf6?! Kh8 51.g4 Rd7+/–) 50...Nd7 51.Rg6 Kh7 52.Rd6 Nc5 53.g4 Re1 54.g5 Rf1 55.Ke5 Nd3 (55...Kg7+–) 56.Rd3 (56…Re1 57.Kf4 Rf1 58.Rf3+–) 1–0. themonkey (2145