2.Na3?? Bb4 3.c3 Ba3 4.Ba3 d5 5.d4 e4 6.e3 b6 7.g3 a5 8.Qa4 c6 9.Be2 b5 10.Qc2 a4 11.f4 h5 12.h3 g5 13.g4? h4?? 14.fg5 Qg5 15.Qd2 Ra7 16.Bc5 Ra5 17.Bb6 Ra6=+ 18.Bc7 Nd7 19.Bf4 Qf6 20.g5 Qg6 21.Bg4 f5 22.Be5?? Ne5-+ 23.Qh2 fg4 24.Qe5=+ Kf7 25.Qh8 g3?? 26.Qh4+- g2 27.Rh2 Bh3? 28.Rh3 Ke6 29.Qg4 Kf7 30.Qg2 Ne7 31.Qf2 Nf5 32.0-0-0 Qg5 33.Rh7 Kg6 (34.Qh2 Rb6+-). formrtexn – capelinhos, net–chess.com, 2003.

2.a4?? Nc6 3.c4? d6 4.d3 Nb4–/+ 5.Qb3 d5 6.Nc3 Be6 7.Bd2? d4 8.0-0-0? Nf6 9.Bg5?? h6 10.Nb5?? hg5 11.Qb4 Bb4 12.Nf3 Ng4 13.Ng5 Nf2 14.Ne6 fe6 15.Rg1 Nd1 16.Kd1 a6 17.g3 ab5 18.ab5 Qg5 19.Rg2 Qd2 0–1. idontknow – cacook (1620), net–chess.com, 2006.

2.a4 d5 (--> 1.b4 d5 2.a4 e5).

2.b5 Ne7 3.Bb2 Ng6 4.e3 e4 5.c4 (5.Nc3 d5+-) 5...c6 (5...a6!?+=) 6.Nc3+- cb5 7.cb5 (7.Ne4?! bc4 8.Bc4 d5 9.Bb5 Nc6=) 7...Qb6?? (better 7...d5 8.d3 Nd7+-) 8.Nd5 (8.Rc1 Nc6 9.bc6 bc6+- (9...Qb2?? 10.Rb1 Qa3 11.cb7 Bb7 12.Rb7+-)) 8...Qd6 9.Qb3 (9.Qh5 Nc6 10.bc6 bc6+-) 9...f6?! (9...Nc6 10.bc6 dc6+-) 10.b6 Na6 (10...ab6 11.Nb6 Ra5 12.Nc8 Qc6+-) 11.Ba6 ba6 12.Nc7 Ke7 (12...Kd8 13.Na8 ab6 14.Nb6 Bb7+-) 13.Ba3 ab6 14.Bd6 Kd6 15.Qb6 Ke7 16.Na8 Kf7 17.Qb3 (better 17.Rc1 Ne7 18.Qb8 h6+-) 17...Ke7 18.Rc1 d6 1–0. GuestZLYS – GuestBRZJ, freechess.org, 2020.

2.b5 g5 3.Bb2 f6 (3...Bg7 4.e4=) 4.e3 Nh6 5.Nc3 d6 (5...d5 6.e4 de4 7.Ne4=) 6.g3 (6.Qh5 Nf7+=) 6...Bd7 (6...g4 7.Bg2=) 7.Ba3 (7.Qh5 Nf7+=) 7...Ng4 (7...Bg4 8.f3 Be6 9.Nge2=) 8.Bh3 (8.h3 Nh6+=) 8...Nh6 (8...f5!?=) 9.Qf3+= Nf7? (9...c6 10.Ne4 f5 11.Nd6 Bd6 12.Qh5 Nf7 13.Bd6 Qf6+=) 10.d3?? (better is 10.Qb7 Bh3 11.Qa8+- (11.Nh3?! Nd7+-)) 10...Bh6?? (10...c6 11.bc6 bc6 12.Rb1=) 11.Nd5?? (11.Qb7 Bh3 12.Qa8 Be6+-) 11...b6?? (11...Bg7 12.Bd7 Nd7 13.c4=) 12.Ne2 (better is 12.Nf6 Ke7 13.Qa8 Kf6 14.Bd7 Nd7 15.Qa7+-) 12...Bh3+= 13.e4?? (better is 13.g4 c6 14.bc6+=) 13...g4 (13...f5 14.ef5 c6 15.Ne3-+) 14.Qf5? (14.Nf6 Ke7 15.Ng4 Bg7–/+) 14...Ng5?? (better is 14...Nd7 15.Qe6 Kf8 16.f3-+) 15.f4?? (better is 15.Nf6 Kf7 16.Ng4 Kg7 17.Bc1-+) 15...Nf3 (better is 15...gf3!? 16.Qf6 Qf6 17.Nf6 Kd8 18.Nc3-+) 16.Kd1 Bg2?? (16...0-0!? 17.Qe6 Kh8 18.Ne3-+) 17.Rf1 Bf1 18.Nf6 Kf8 19.Nh7 (19.Nd5 Kg7 20.Qg4 Ng5 21.fg5 Bg5-+) 19...Ke8 (better is 19...Kg7 20.Qg4 Kh7 21.Qf3 Be2 22.Qe2 a6-+) 20.Qg6 Ke7 21.fe5?? (better is 21.Qf6!? Kd7 22.Qf5 Ke8 23.Qg6 Kd7 24.Qf5 Ke8=) 21...Bd2 (21...Be2 22.Ke2 Nd4 23.Kd1-+) 22.Bc1?? (22.ed6 cd6 23.Qg7 Ke6 24.Qg4 Ke7 25.Qg7 Ke6 26.Qg4 Ke7 27.Qg7 Ke6 28.Qg4=) 22...Be1 (22...Be2 23.Ke2 Bc3 24.Qg7 Ke6 25.Qg4 Ke7 26.Qg7 Ke6 27.Qg4 Ke7 28.Qg7 Ke6 29.Qg4=) 23.Rb1?? (23.Qg7 Ke8 24.Qh8 Kd7 25.Qg7 Kc8 26.Qg4 Nd7 27.Qf3 Be2 28.Qe2 Bc3+-) 23...Kd7 (better is 23...Qg8 24.Bg5 Ng5 25.Qg8 Rg8 26.ed6 cd6 27.Ng5 Ba5-+) 24.Nf6?? (24.Qg4 Ke8 25.Nf6 Kf7 26.e6 Kf8 27.Bh6 Rh6 28.Qg8 Ke7 29.Qf7) 24...Kc8-+ 25.Bg5?? (25.Qg4 Nd7 26.Qf3 Be2 27.Qe2-+) 25...Rh2 (25...Be2 26.Ke2 Rh2 27.Kd1-+) 26.Nf4 (26.Nd4 Bg3 27.Qf5 Nd7 28.Ng4 Be2 29.Kc1 Rh1 30.Kb2 Rb1 31.Kb1 Nd4-+) 26...Rd2 (26...Bg3 27.Qf5 Nd7 28.Qg4 Be2 29.Kc1 Rh1 30.Kb2 Rb1 31.Kb1 Nd2 32.Kc1 Bg4 33.Kd2 Nf6 34.ef6 Bf4 35.Bf4 Qf6 36.Be3-+) 27.Kc1 Nd4 (better is 27...Nd7 28.Ne6 Nde5-+) 28.Rb4 (28.Ng4 Qf8 29.Ne3 de5-+) 28...Nc2 (better is 28...Rc2 29.Kb1 Bb4 30.N6d5-+) 29.Rc4 (29.Rb2 de5 30.N4d5 Ne3 (30...Rd3 31.Rc2 Nd7 32.Ng4–/+; 30...Bd3?! 31.Bd2 Nd7 32.Qg4-+) 31.Be3 Rb2 32.Qg4 Kb7 33.Kb2 Qh8-+ (33...Bd3?! 34.Qd1-+)) 29...Na3 (29...Ne3 30.Rd4 Qh8 31.Ng4 Rd1 32.Kb2 Ng4 33.Qe6 Nd7 34.Qg4 Qh2 35.Ka3-+) 30.Rc3 (30.N6d5 Nc4 31.Bd8 Ne5 32.Ne7 Kb7 33.Qe6+=) 30...Nb5 31.Qf7 (31.Qf5 Nd7 32.Ne6-+) 31...Nc3 (31...Nc3 32.Ne6 Na2 33.Kb1 Bd3 34.Ka1 Rf2-+) 0–1. Tiedemann,Marcel – Franziska,Franzi, remoteschach.de, 2002.

2.c3 Bb4?? 3.cb4+- a5 4.ba5 Nc6 5.Nc3 d5 6.e3 Nf6 7.Nf3 0-0 8.Be2 d4+/– 9.ed4 ed4= 10.Nb1 Nd5?? 11.0-0+- Be6 12.d3 Na5? 13.Bd2 Nc6 14.a4 Ncb4 15.Bb4 Nb4 16.Nbd2 Nd5 17.Rb1?? b6?? 18.Re1 c5 19.Bf1?? Qd7 20.Ne4 Nc3? 21.Nc3+- dc3 22.Qc2 b5? 23.ab5 Rfb8 24.d4 cd4 25.Red1?? Qb5?? 26.Bb5+- Ba2 27.Qa2! Ra2 28.Nd4 Rb2 29.Rb2 cb2 30.Bf1 g6?? 31.Nf3 b1Q 32.Rb1 Rb1 33.g3 Rf1? 34.Kf1 f5 35.Ne1 Kf7 36.f4 Kf6 37.Kf2 g5 38.fg5 Kg5 39.Nf3 (39.Nf3 Kg4 40.Kg2+-) 1–0. Fournier,Frederic (1925) – martelli08 (1790), Active Blind, 2008.

2.c3 Bc5?? 3.bc5+- Nf6 4.Na3 Nc6 5.Nf3 Qe7 6.d4 e4 7.Nb5 Qd8 8.Ne5 a6 9.Na3 Ne5 10.de5 Nd5 (10...Ng4 11.Qd4 Qh4+-) 11.Qd5 1–0. b4_player – jensen, internet, 2013. (=1.c3 e5 2.b4)

2.c3 Qe7 3.e3 f5 4.Bb2 Nf6 5.Nf3 h6 6.d3 g5 7.h3 Bg7 8.Be2 c6 9.Nbd2 a6 (9...d5 10.c4 Nbd7 11.a3=) 10.0-0 (better is 10.Nc4!? Nd5 11.e4+/–) 10...d6= 11.a4 Be6 12.e4 f4 13.Re1 0-0 14.Qc2 Nbd7 15.Nf1 b5 16.ab5 ab5 17.Ra8 Ra8 18.Ra1 Ra1 19.Ba1 Kh7 20.Bb2 Qd8 21.Qb1 Nb6 22.Qa1 Bf8 23.N1d2 c5? (better is 23...Na4!?=) 24.bc5+/– dc5 25.c4 bc4 26.Nc4 Nc4 27.dc4 Qb6 28.Bf1 Nd7 29.Ba3 Nb8 30.Qb2 Qb2 31.Bb2 Na6 32.Bc1 Nb4 33.Nd2 Bd6 34.Ba3 Bc7 35.Nb3= h5?? 36.Na5 Ba5-+ 37.Bb4 cb4 38.Bd3 b3 39.g3 b2 40.gf4 ef4 41.Kg2 Kh6 42.f3 Bc4! 43.Bc4 b1Q 44.Bd3 Qd3 (44...Qd3 45.Kf2 Qd2 46.Kg1 Bb6 47.Kh1 Qd1 48.Kg2 Qg1) 0–1. Fournier,Frederic (1865) – REVELO (1850), Active Blind, 2011.

2.c3 g5 3.Bb2 Nh6 4.e3 Bg7 5.Nf3 Qf6 6.Be2 0-0 7.a3 d6 8.d3 Bf5 9.Nbd2 (9.e4 Bd7+=) 9...g4= 10.Ng1 Kh8 11.g3 Nc6 12.Bf1 (12.h3 Qg6+=) 12...Nd8 13.Bg2 (13.h3 d5+=) 13...c5 (13...Bd3!? 14.h3 Qg6–/+) 14.bc5 dc5 15.Rb1 b6?? (better is 15...Bd3 16.Ne4 Be4 17.Be4 Qa6+=) 16.Ba8+- Rg8 (16...Bd3 17.Ne4 Be4 18.Be4+-) 17.Bg2 (17.h3 Nc6 18.Bc6 Qc6+-) 17...Bf8 18.Ne2 Ne6 19.0-0 a5 20.d4 Bb1 21.Qb1 ed4 22.cd4 Nf5 23.Qa1 cd4 24.Nd4 Ned4 25.ed4 Nd4 26.Bd4 Qd4 27.Qd4 Bg7 28.Qd3 h6 29.Nc4 Rf8 30.Rd1 b5 31.Na5 Ra8 32.Ba8 (32.Ba8 Kg8 33.Qf5 Bd4 34.Rd4 Kg7 35.Qe5 Kh7 36.Be4 f5 37.Rd7 Kg6 38.Qf5) 1–0. Fournier,Frederic (1915) – Darthsito (1930), Active Blind, 2008.

2.c3 h6 3.e4 Nf6 4.Nf3 Ne4 5.Qe2 Nf6 6.Ne5 Qe7 7.d4 d6 8.Nf3 Qe2 9.Be2 Bd7 10.0-0 Be7 11.Re1 0-0 12.c4 Re8 13.Nc3 c6 14.Bf4 Na6 15.a3 b5 (15...Nc7!?+=) 16.cb5+/– cb5 (Better is 16...Nc7!? 17.bc6 Bc6+/–) 17.Nb5+- Bb5 (17...d5 18.Ne5 g5 19.Bg3+-) 18.Bb5 Reb8 19.Ba6 Ng4 20.Re7 Rb6 21.Bc4 Rc8 22.Bf7 Kh7 23.Ra7 Rbc6 24.Nh4 Rc4 25.Bc4 Rc4 26.Bd6 Rd4 27.Nf5 Re4 28.f3 Nh2 29.Rg7 Kh8 30.fe4 Ng4 31.Rc1 Nf6 32.Rc8 Ng8 33.Rcg8# 1–0. b4_player (2235) – Jhonny (1620), GameColony.com, 2003.

2.Nc3 c6 (--> 1.b4 c6 2.Nc3 e5).

2.c4 b6 3.e4 Bb7 4.Qf3 g6 5.Nc3 f5 6.Bd3 a6 7.ef5?? Bf3-+ 8.Nf3 gf5 9.Bf5 Bg7 10.d4 ed4 11.Nd5 d3! 12.Rb1 Ne7 13.Bg5 Nbc6 14.Bd3 h6 15.Bh4 b5! 16.0-0 bc4 17.Bg6 Kf8 18.Rbd1 Qb8 19.Rfe1 Ng6 20.Re4 Nb4 21.Bg3 Na2 22.Nc7 Nc3 23.Bd6 Kg8 24.Re8 Qe8 25.Ne8 Nd1 26.Nc7 Rb8 27.Nd5 Rb1 28.g3 Ne3 29.Ne1 Re1# 0–1. aauerbach – maf, net–chess.com, 2001.

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

2.c4 Nc6 3.Ba3 Nb4 4.Bb4 Bb4 5.Nc3 Ba3 6.Rb1–/+ d5?? 7.cd5?? Bd7 8.Qb3 Bc5 9.Qb7 Bb6 10.e4 Rb8 11.Qa6 Bg4 12.Nf3 Qd6 13.Qb5 c6? 14.Qa4?? Qf6?? 15.dc6+- Rc8 16.c7 Ke7 17.Nd5 Ke6 18.Nf6 Nf6 19.Bc4 Ke7 20.Ne5 Bd7 21.Nd7 Nd7+- 22.Qb4 Bc5 23.Qb7 Rce8 24.Qc6 Bd6 25.Rb7 a6 26.Qa6 Nc5 27.Qc6 Nb7+- 28.Qb7 h5 29.0-0 Rh6 30.e5! Be5 (31.c8Q) 1–0. Kluge,Leyla – Roch,Christine, Sachsen–ch U08 Girls, 2007.

2.c4 e4 3.Ba3 a5 4.b5?? c6?? 5.Bf8+= Kf8 6.f3 ef3 7.gf3?? Qh4 0–1. MC Q – breaker, ChessWorld.net, 2004.

2.c4 Nf6 (--> 1.b4 Nf6 2.c4 e5).

2.c4 g6 3.Bb2 Bg7 4.d4 d6 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.d4 Bg7).

2.c4 Qh4 3.Nf3 Qc4=+ 4.e4? Qe4-+ 5.Be2 g5 6.Nc3–/+ g4?? 7.Ne4+- gf3 8.gf3 Bb4 9.Rb1 a5 10.Bb2 Ne7 11.h4 Nd5 12.a3 f5 13.Be5 Rg8 14.Bc4 fe4 15.Bd5 Rf8 16.fe4 d6 17.Bg7 Rf7 18.Qg4 Bg4+= 19.Rf1?? Rf3 20.ab4= ab4 21.Rg1 Bh3? 22.Ke2 Rf4+= 23.Rb4 c6= 24.Bh6 Bg4 25.Kd3+/– Rf3 26.Kc4?? c5?? 27.Rg4+/– Ra4?? 28.Ra4+- Rf2 29.Ra8 Rd2 30.Rb8 Kd7 31.Rg7# 1–0. btomey – wtomey, net–chess.com, 2001.

2.d3 d6 3.e3 g6 (3...d5 4.a3+=) 4.Nf3= Bg7 5.c4 (5.e4 f5=) 5...Ne7 (5...e4 6.Nd4 c5 7.Nb3 ed3 8.Bd3–/+) 6.Be2 (6.e4 0-0=) 6...0-0?? (6...e4 7.Nd4 c5 8.Nb3 Ba1 9.Na1 ed3 10.Qd3 cb4 11.Bb2–/+) 7.0-0 (7.e4 f5=) 7...Bg4 (7...e4 8.Nd4 c5 9.bc5 dc5 10.Nc2 ed3 11.Bd3-+) 8.h3 (8.Bb2 a5 9.b5 Nd7=) 8...Bd7 (better is 8...e4!? 9.hg4 ef3 10.Bf3 Ba1 11.Bb7 Nd7 12.Ba8 Qa8–/+) 9.d4 e4 (9...ed4 10.ed4 (worse is 10.Nd4 c5–/+) 10...c5 11.b5=) 10.Nfd2 f5 11.Nc3 Be6 12.Qb3 Nd7 13.a4 g5 14.d5 Bf7 15.Bb2 c6 16.Nce4 fe4 17.Bg7 Kg7 18.Ne4 Nf5 19.f4 gf4 20.Qc3+= Kg8 21.Rf4 Bg6 22.Raf1 Qe7 23.g4 Nh4 24.g5? Rf4 25.Rf4 Be4 26.Rh4 Bg6 27.Bg4? Ne5 28.Be6 Kh8 29.Rf4 Rf8 30.Rg4? Bf5 31.Rg2 0–1. Skidgel,Wendell A – Katz,Benjamin (2005), Schenectady op10a, 2003.

2.d4 f6 3.Ba3 d5 4.de5= fe5 5.e3 e4?? 6.Nc3?? Nf6=+ 7.h3 a6 (8.Qd2 Nc6=+). AmericanRusky – Kevin@home, ChessWorld.net, 2005.

2.e3?? Nc6 3.c3 Nf6 4.Nf3 Ng4 (4...e4!? 5.Nd4 a5+=) 5.h3 e4 (5...Nf6=) 6.Ng1 (better is 6.hg4 ef3 7.gf3+/–) 6...Qh4?? (better is 6...Nf6+=) 7.Bb5?? (better is 7.Qg4 Qg4 8.hg4+-) 7...Qf2 0–1. Otschik,J – Glowacka,J, Augustow op U16 Poland, 1996. (=1.e3 e5 2.b4 Nc6)

2.e3?? d5 3.Bb2 Bb4 4.Be5 Nf6 5.h3 0-0 6.Nf3 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 0-0 5.Nf3 d5 6.h3).

2.e3?? Qe7 3.Bb2 (---> 1.b4 e5 2.Bb2 Qe7 3.e3).

2.e3?? f5 3.d4 e4 4.c4 c6 5.d5 a3 0–1. Meisinger,Peter – Blankenberg,Bruno, DESC, 2000.

2.e3?? Qh4 3.Bb2 d6 4.c4 Nc6 5.b5 Na5 6.Nf3 Qe4 7.Nc3+/– Qg4 8.h3 Qe6 9.d3 Nf6+= 10.d4 Nc4= 11.Bc4 d5?? 12.Bb3 Bb4? 13.0-0 e4 14.Ne5 0-0 15.a3 Bd6 16.f4 ef3 17.Rf3 Be5 18.Bd5?? Nd5=+ 19.Nd5 Qd5–/+ 20.de5 Qb5 21.Qd4 Be6-+ 22.Raf1 c5 23.Qc3 b6 24.Qc2 g6 25.e4 Rad8 26.a4 Qc6 27.Rd1 Rd1-+ 28.Qd1 Qe4 29.Rf6 Bd5 30.Qf3?? Qb1 (31.Qf1 Qb2-+) 0–1. gtate (1945) – camcnt (1875), net–chess.com, 2003.

2.e4?? a5 3.c3?? (3.b5!?=) 3...h5 (better is 3...ab4 4.Nf3 Nf6-+) 4.g4?? (better is 4.b5 d5 5.ed5 Qd5 6.Na3+=) 4…hg4-+ 1–0. Pavasovic,D (2520) – Wong Meng Kong (2505), 34th Olympiad, Istanbul TUR, 2000. (=1.e4 e5 2.b4)

2.e4?? b5 (--> 1.b4 b5 2.e4 e5).

2.e4?? b6 3.a3= Bb7 4.Nc3 Nf6 5.d3 d5 6.ed5 Nd5 7.Bb2 Nc3 8.Bc3 Nd7 9.Nf3 Bd6 10.Be2 0-0 11.0-0 f5 12.Qd2 h6 13.d4 Bf3 14.Bf3 (worse is 14.gf3 Kh7 15.f4 e4+=) 14...e4 15.Be2 Nf6 16.Bc4 Kh8 17.Rfe1 c5 18.bc5 bc5 19.dc5 Bc5 20.Qd8 Rad8 21.Bb4 Bb4 22.ab4 Rd4 23.Be6 Rb4 24.Bf5 Rf7 25.c3 Rb2 26.h3 Rc2 27.c4 Re7 (worse is 27...Rc4 28.Be6 Rcc7 29.Bf7 Rf7 30.Re2+-) 28.Red1 Rc4 (better is 28...g6!? 29.Bg6 Kg7=) 29.Rd8+/– Re8 30.Re8 Ne8 31.Ra7 Nc7 32.Bg6 Kg8 33.Ra3 Kf8 34.Re3 Rc1 35.Kh2 Ke7 36.Be4 Kf6 37.g3 g5 38.Rb3 Re1 39.Rb6 Ne6 40.Bd5+- Kf5 41.Be6 Re6 42.Re6 Ke6 43.Kg2 Kf5 44.Kf3 h5 45.g4 hg4 46.hg4 Ke5 47.Ke3 Kd5 48.f4 gf4 49.Kf4 Ke6 50.Kg5 1–0. Fournier,Frederic (2535) – Bodart,Jeffrey (2180), Echecsemail.com (Team), 2013.

2.e4?? Bd6 3.Qg4 Qf6 4.Nc3= Nh6 5.Qh3 0-0 6.Nd5 Qd8 7.a3 c6 8.Ne3 Qf6 9.Qf3 Qf3 10.Nf3 b6 11.Nc4 Be7 12.Nce5+/– c5? 13.bc5+- Bc5 14.d4 Bd6 15.Nc4 b5?? 16.Nd6 Nc6 17.Bh6 gh6 18.Bb5 a6 19.Bc6 dc6 20.Ne5 Be6 21.Nc6 Rac8 22.d5 Bd5 23.ed5 (23…Rc7 24.c4+-) 1–0. mrkt – globus777, kurnik, 2007.

2.e4?? Qf6 3.Nf3 Bb4 4.c3 Bc5 5.d4 ed4 6.Qa4? dc3-+ 7.e5 Qe6 8.Nc3–/+ Nh6 9.Bc4 Qb6?? 10.Rb1?? Qg6–/+ 11.Rb5?? b6 12.0-0 a6 13.Rb2 Ng4 14.Re2 b5?? 15.Nb5+/– ab5 16.Qa8+- 0-0 17.Bb5 c6 18.Qb8 cb5 19.Qb5 Qb6?? 20.Qc4 Ba6+= 21.Qc2 d5?? 22.Ng5 h6?? 23.Qh7 1–0. retonini – ahwerle, net–chess.com, 2003.

2.e4?? Qh4 3.Nc3 Nc6 (better is 3...Bb4!? 4.Nf3 Qd8+=) 4.Nf3+= Qh5 5.b5 Nd4 6.Nd4 Qd1 7.Kd1 ed4 8.Nd5 Bd6 (8...Kd8 9.Bb2 c6 10.Nf4+=) 9.Bb2 (9.Ba3 Ne7 10.Bd6 Nd5 11.ed5 cd6+-) 9...c6 10.Bd4 f6 11.Ne3 cb5 12.Bb5 a6 13.Bc4 b5 (better is 13...Be5 14.Be5 fe5 15.Bg8 Rg8+-) 14.Bd5 Ne7 (14...Rb8 15.Ba7 Ne7 16.Bb8 Bb8+-) 15.Ba8 Ng6 (15...Be5 16.Be5 fe5 17.a4 ba4 18.Ra4+-) 16.c3 Nf4 17.a4 Nd3 (17...ba4 18.Ra4 Kf7 19.Nf5+-) 18.Kc2 Nf2 (18...Nf4 19.ab5 ab5 20.Rhb1+-) 19.Nf5 Bf8 20.Bf2 g6 21.ab5 gf5 (21...ab5 22.Ne3+-) 22.ba6 Bd6 23.a7 0-0 24.Bd5 Kh8 25.a8Q Be5 26.d4 Bf4 27.g3 Bh6 28.Qa3 d6 29.Qd6 fe4 30.Be4 f5 31.Bd5 Bg7 32.Be3 Rf6 33.Bf4 Rd6+- 34.Bd6 f4 35.gf4 h5 36.Ra8 Kh7 37.Rc8 Kh6 38.Be5 h4 39.Bg7 Kg7 40.Rg1 Kf6 41.Rf8 Ke7 42.Rf7 Kd6 43.c4 h3 44.Rg6 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

2.e4?? h6 (--> 1.b4 h6 2.e4 e5).

2.e4?? Nh6 3.f4 (better is 3.a3!?=) 3...Bb4 4.c3 Bc5 5.Nf3 ef4 6.d4 Bb6 7.Bf4 Nc6 (7...Ng4 8.Bc4=) 8.Bg5+= Ne7 9.Bd3 c5 10.0-0 cd4 11.cd4 f6 (11...Ng4!? 12.Qa4 f6=) 12.Bh6+/– gh6 13.Nc3 Rg8 14.Kh1 d6 15.Bc4 Rg7 16.e5 (16.Bb5 Bd7+/–) 16...de5+= 17.Ne4 (better is 17.de5 Qd1 18.Rad1+= (18.Rfd1?! fe5 19.Ne5 Nf5=)) 17...ed4?? (better is 17...Nc6 18.de5 A) 18...Ne5?? 19.Ne5 Qd1 20.Nf6 Ke7 21.Rad1+- (21.Rfd1?! Kf6 22.Nf7 Rg6=); B) 18...fe5 19.Ne5 Qd1 (worse is 19...Ne5 20.Qh5 Ng6 21.Nf6 Qf6 22.Rf6+-) 20.Nf6 Kf8 21.Rad1 Ne5 22.Nd7 Ke7 23.Ne5 Ba5=) 18.Nf6+- Kf8 19.Nh4 Rf7 (19...Bf5 20.Nf5 Nf5 21.Rf5 Rg6 22.Nh5 Ke8 23.Bb5 Rc6+-) 20.Qh5 Rg7 21.Nd7# (21.Nh7#) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

2.Nf3 d5 (--> 1.b4 d5 2.Nf3 e5).

2.Nf3 Bd6 3.c3 (3.b5 e4 4.Nd4 Be5+=) 3...Nf6 4.Qb3 (4.d3 Nc6=) 4...a6 (4...e4 5.Nd4 Be5–/+) 5.Ng5 (better is 5.Na3!?+=) 5...0-0–/+ 6.e3 h6 7.Nf3 Nc6 8.Bc4 (8.Be2 e4 9.Nd4 a5–/+) 8...Be7 (8...e4 9.Nd4-+) 9.Na3 (9.0-0 d5 10.Be2 Bg4–/+) 9...d5 10.Be2 e4 11.Nd4 Nd4 12.cd4 Bg4 (12...Qd6–/+) 13.h3 (better is 13.Bg4!? Ng4 14.h3–/+) 13...Be2-+ 14.Ke2 Qd7 15.f3 (better is 15.Bb2-+) 15...Nh5 16.Kf2 (16.Re1-+) 16...Bh4 17.Ke2 (17.Kg1 ef3 18.gf3 Qd6-+) 17...Ng3 18.Kd1 (18.Kf2 Nh1 19.Kg1 Nf2-+) 18...ef3 19.gf3 Nh1 20.f4 (20.d3 Nf2 21.Kc2 Rad8-+) 20...c6 (20...Nf2 21.Kc2-+) 21.Bb2 (21.Kc2 Nf2 22.d3 Rfe8-+) 21...Nf2 22.Kc2 Qf5 23.Kc3 0–1. spglenn – omnipotent00 (1710), gameknot.com, 2014.

2.Nf3 Qe7 3.Bb2 e4–/+ 4.Nd4 Qb4 5.Bc3 Qc4 6.e3=+ Qe6?? 7.Ne6+- de6 8.Qg4 Nf6 9.Bf6 gf6 10.Qe4 f5 11.Qe5 Bd6 12.Qh8 Bf8 13.Qh7 Nd7 14.h4 Nf6 15.Qh8 Ke7 16.h5 1–0. chessmann – FreshPrinc2, mySchach.de, 2005.

2.Nf3 g6 3.Bb2 (3.Ne5 Bb4 4.Nd3 Be7=) 3...Bg7 (3...f6 4.a3=) 4.Nc3 (4.Be5 Nf6+/–) 4...Nc6 (4...e4 5.Ng1+=) 5.a3 (5.b5 Nd4=) 5...d6 (5...e4 6.Ng1+=) 6.e4= Nf6 7.Qe2 0-0 8.Nh4 (8.Qd3!?=) 8...Nd4 (8...a5 9.Qc4–/+) 9.Qd1 (better is 9.Qd3!?–/+) 9...Ne4!-+ 10.Ne4 Qh4 11.Bd3 Bg4 12.Qc1 (12.Qb1 d5 13.Nc5 e4-+) 12...Bf5 13.Nc3?! (13.Ng3 Bd3 14.Bd4-+) 13...Bd3 14.cd3 Nb3 15.Qd1 Na1 16.Ba1 c6 17.Ne4 (17.0-0 d5-+) 17...d5 18.Nc5 a5 19.b5 (19.Bc3 Qe7-+) 19...Qe7 20.Qc2 (20.Na4 cb5 21.Nc3 Qa3-+) 20...cb5 21.0-0 (21.Nb3 a4 22.Nc1 Qa3-+) 21...Rfc8 22.d4 ed4 23.Rc1 b6 24.h3 (24.Qb1 bc5 25.Qb5 Bh6-+) 24...Qc5 25.Qc5 bc5 26.Re1 (26.Kf1 b4-+) 26...b4 27.Re7 c4 (27...Re8 28.Re8 Re8 29.ab4 Re1 30.Kh2 cb4 31.Bb2-+) 28.a4 Re8 29.Rd7 Re1 30.Kh2 Ra1 31.Rd5 c3 32.dc3 bc3 (32...dc3!? 33.Rc5 b3 34.h4-+) 33.Rc5 d3 0–1. Teske,Heike (2170) – Lueckerath,Heinz_Josef (2050), remoteschach.de, 2006.

2.f4? Bb4 3.c4? c5 4.Nf3 Nc6 5.fe5 Qc7 6.Bb2= Nge7 7.e3 d6 8.Nc3 de5=+ 9.Nd5 Nd5 10.cd5= Ne7 11.Be5 Qd7 12.d6 Nf5= 13.Bc4 Ne3 14.Qe2+= Nc2 15.Kf1?? 0-0-+ 16.Rc1 Qf5?? 17.Bd3+/– Qh5 18.Bc2 Bg4 19.Bg3 Rfe8+/– 20.Qd3 Bf3? 21.gf3 g6 22.Kg2 Rad8 23.Rhe1 Rf8 24.Re7 Qg5 25.f4 Qg4 26.Bd1 Qc8 27.Bf3 b6?? 28.Rce1 c4 29.Qd5 Rd6 30.Qd6?? Bd6-+ 31.Ra7 f5?? 32.Bd5 Kh8 33.Bf2 Qb8 34.Bd4 Be5 35.Be5 Qe5 36.Re5 (36…Rd8 37.Ree7 Rd7 38.Ra8 Rd8 39.Rd8#) 1–0. NightClub – nitehawk7, Live Game Caissa's Web, 2005.

2.f4 e4 3.Bb2=+ d5 4.c4 c6 5.cd5=+ cd5 6.d4? Bb4-+ 7.Nd2?? Nf6 8.e3 0-0 9.Be2 Nc6 10.Qb3 Qd6 11.a3 Ba5 12.a4 Qb4 13.Qb4 Bb4 14.Ba3 Bg4 15.Bb5 Bd2 16.Kd2–/+ Rfc8 17.Ne2 a6 18.Bc6–/+ bc6 19.Rhc1 Nd7 20.h3 Be2–/+ 21.Ke2 Rab8 22.a5 Rb3 23.Bd6 h6 24.Kd2 Rd3 25.Ke2= Nf6 26.Rab1+= g5 27.fg5+/– Ne8 28.Be7 hg5 29.Rb6 Rc7 30.Bg5+- Kh7 31.Bf4 Ra7 32.Rcc6 Ra3 33.Rb8 Ng7 34.Rh6# 1–0. gtate (1965) – gfry (2005), net–chess.com, 2007.

2.f4 Qh4 3.g3 Qh5 4.Nf3 ef4 5.gf4 Bb4 6.Rg1 g6 7.Rg5 Qh6 8.Re5 Ne7 9.c3 Bd6-+ 10.Re7 Be7 11.d4 Bh4 12.Kd2 d6 13.Qe1 Be1 14.Ne1 Qh2 15.Nf3 Qf4 16.e3 Qf3 17.Be2 Qf2 18.Ba3 Bg4 19.Bb4 Qe2 20.Kc1 Bf5 21.Nd2 Qe1 22.Kb2 Qd2 23.Ka3 Nc6 24.c4 Qe3 25.Ka4 Bc2 26.Kb5 a6 0–1. formrtexn – jfleming, net–chess.com, 2002.

2.g4?? c6 3.Bg2 d5 4.b5 Bg4 5.c4 Be6 6.bc6 bc6 7.Nc3 d4 8.Ne4 Nd7 9.Nf3 Ngf6 10.Nf6 Nf6?? (better 10...Qf6 11.d3 Rb8-/+) 11.Ne5+= Rc8 12.Qa4 (worse 12.Bc6 Rc6 13.Nc6 Qa8=+) 12...Bd6 13.Bc6 Kf8 14.Nd3 Qc7 15.Bf3 Qc4 16.Qc4 (better 16.Qa7!? Bf5 17.Ba3 Bd3 18.Bd6 Kg8 19.0-0 Be2 20.Rfc1 Qc1 21.Rc1 Rc1 22.Kg2 Bf1 23.Kg3+/-) 16...Rc4=+ (worse 16...Bc4 17.Bb2+=) 17.Bb2 g6 18.0-0 Kg7 19.Rfc1 Rc1 20.Rc1 Rb8 21.Bd4 Be7 (21...Ba2 22.Kg2+/-) 22.Ne5 (22.Rc7 Rd8 23.e3 Rd7 24.Rd7 Bd7 25.Ba7 Bf5+-) 22...Kf8 (better 22...Rb5!?+/-) 23.Nc6+- (worse 23.Ba7 Rb2 24.a4 Rd2+/-) 23...Rd8?? (better 23...Rc8+-) 24.Nd8 Bd8 25.Rb1 Be7 (25...Kg7 26.Rb7 Ba2 27.Ra7+-) 26.Rb8 Ne8 (26...Kg7 27.Rb7 Bd6 28.Ra7+-) 27.Rb7 (better 27.Bc6 f6 28.Re8 Kf7 29.Ra8+-) 27...Ba2 28.Bc6 f5 29.Rb8 Kf7 (29...Bf7+-) 30.Be8 Ke6 31.Ra8 Bd5 (31...Bc4 32.d3 Bb3 33.Ra7+-) 32.Ra7 Bd6 (32...Bc4 33.d3 Bb3 34.Rb7+-) 33.Bd7 (33.Bf7) 33...Ke7 34.Bc6 (34.Bc6 Ke6 35.Bb5+-) 1-0. Seppo (2370) - cvadim (2245), Rated Bullet tournament Pku1ocsm, lichess.org, 2016. (=1.g4 A00: Irregular Openings 1...e5 2.b4)

2.g4?? d6 3.a4 f6 4.Nf3 g5 5.Nc3 h6 6.e3 c5 7.bc5 b6 8.cb6 ab6 9.e4 Bb7? 10.Ra3 Ra5? 11.Be2 Ne7? (12.Bb5 Nd7+/–; better is 11...d5!? 12.Bb5 Kf7 13.Nd5 A) < 13...Bd5 14.Rd3+- (14.ed5?! Ba3 15.Ba3 e4+=); B) 13...Ba3 14.Ba3 Bd5 15.ed5 Qd5=). Dabelstein,Tim (1800) – Bia,Bianca, remoteschach.de, 2002.

2.g4?? e4 3.c3 d5 4.h3 g6 (4...h5!?–/+) 5.d3= ed3 6.Bg2 Bg7 7.Qd3 c6 (7...Ne7 8.e4 Be6 9.Bg5=+) 8.Be3 Be6 9.Bd4 Bd4 10.Qd4 Qf6 11.Nf3 Qd4 (11...h6 12.Nbd2=) 12.Nd4 Nd7 13.Nd2 Ngf6 14.f4 0-0-0? (better 14...Nf8+=) 15.f5+- (15.Ne6?! fe6 16.Rd1 e5=) 15...gf5 16.gf5 (worse 16.Nf5 Bf5 17.gf5 Rhg8–/+) 16...Rhg8 17.0-0 Rde8 18.Kh2 (18.Ne6 fe6 19.Rae1 ef5 20.Rf5 Rg3=+; 18.fe6?! fe6 19.c4 Rg6+-) 18...Ne4? (better 18...Kd8+-) 19.Be4 (19.Ne6 Nd2 20.Rfd1 fe6 21.fe6 Nc4 22.ed7 Kd7–/+; 19.fe6 Nd2 20.ed7 Kd7 21.Rf7 Re7 22.Re7 Ke7+-; worse 19.Ne4 de4 20.fe6 fe6 21.Be4 e5+-) 19...de4 20.fe6 (20.Ne6?! e3 21.Ne4 fe6 22.Nd6 Kc7 23.Ne8 Re8 24.fe6 Re6+-) 20...fe6 21.Ne4 Re7 22.Rg1 Rf8 23.Raf1 Rfe8 (23...Rf1 24.Rf1 Kc7+-) 24.Nd6 Kb8 (24...Kd8 25.Ne8 e5 26.Nf5 Re8 27.Rg7+-) 25.Ne8 Re8 (25...e5 26.Rg7 Rg7 27.Ng7 ed4 28.cd4+-) 26.Rf7 h6 (26...e5 27.Nc6! bc6 28.Rd7 h5+-) 27.Rd7 e5 28.Ne6! a6 (28...Re6 29.Rg8 Mate attack) 29.Nc5 Kc8 (29...Rh8 30.Rb7 Ka8 31.Rgg7 Rd8 32.Ra7 Kb8 33.Na6 Kc8 34.Rac7) 30.Rgg7 (30.Rgg7 Rf8 31.Rc7 Kb8 32.Rb7 Ka8 33.Ra7 Kb8 34.Na6 Kc8 35.Ra8) 1–0. Panza (2710) – MichialF (1655), ChessWorld.net, 2017.

2.g4?? Qf6 3.c4 Bb4 4.Nf3?? Bc5 5.d4 ed4-+ 6.e4?? d3! 7.Bd3?? d6 8.Ke2?? Bg4 9.Bb2 Qf3 10.Ke1 Qh1 (11.Bf1 Bd1 12.Bg7 Qe4 13.Kd1 Qg4 14.Kc2 Qg7-+; 10...Qd1) 0–1. donlissa – wtomey, net–chess.com, 2001.

2.g4?? Qh4 3.d3 Bb4 4.c3 d6?? 5.h3?? Bc5–/+ 6.e3 Nh6 7.d4 Bb6 8.Rh2 ed4 9.ed4? f5 10.Ba3? fg4 11.Qa4 Kd8 12.Nd2 Bf5 13.Nc4 Rf8 14.Rb1?? Bb1 15.Qd1 Nc6 16.Qb1 Nd4! 17.cd4 Bd4 18.Qd1?? Bc3 19.Ke2 a5 20.Qc2?? Bd4 21.Qd3 Bf2 22.hg4 Qh2 23.Nf3 Qh1 24.Bh3 Qh3 25.Kf2 Ng4 26.Ke2 Ra6 27.Bb2 Rc6 28.Qf5 Rf5 29.Nd4 d5 30.Na5 Rb6 31.Nf5 Rb2 32.Kd1 Qh1# 0–1. Bia,Bianca – Moch,Stefan, remoteschach.de, 2002.

2.Nh3 Bb4 3.a3 Be7 4.Ra2 d5-+ 5.a4 c5 6.a5 Nc6 7.c3 Na5 8.Qa4 Nc6 9.Qb5 Nf6 10.Na3 0-0 11.d3 Qc7 12.Bg5 Re8 13.e3 a6 14.Qa4 Bd7 15.f3 Nb4 16.Qb3 Na2 17.Qa2 b5 18.d4 ed4 19.ed4 Bh3 20.gh3 cd4 21.Bd3 Qc3 22.Ke2 Ba3 23.Be4 de4 24.f4 Qf3 25.Kd2 Bb4 26.Kc2 Qh1 27.Qb1 Qh2 28.Kb3 Bc3 29.Bh4 Nd5 30.Qc1 a5 31.f5 a4 32.Ka3 b4 0–1. krsmth – smithche (1920), net–chess.com, 2001.

2.h4 Qf6 3.c4 Bb4-+ 4.Qb3 Ne7?? 5.Qb4+- 0-0 6.g3 Nbc6 7.Ba3?? d6 8.Nc3?? Rd8 9.0-0-0?? Nb4-+ 10.Bb4 Be6 11.Bh3 Rac8 12.Ne4 Qh6 13.Nf3 a6 14.g4 b6 15.g5 Qg6 16.h5 Qe4 17.d3 Qc6 18.Nd4 Bd7 19.Nf5?? Ra8 20.Ne7+- Kf8 21.Nc6 Bc6 22.Rdg1 Re8? 23.f4?? Ba4?? 24.Bd7?? Bd7=+ 25.fe5 f5?? 26.g6 hg6 27.ed6+/– cd6 28.c5?? d5?? 29.Rg6?? Re2? 30.Re1?? Re1–/+ 31.Kc2?? Re3 32.h6? gh6 33.d4 f4 34.cb6 Ke8 35.Rg8=+ Kf7 36.Rf8?? Rf8-+ 37.b7 Rb8 38.a4 Rb7 39.Ba3 Rb8 40.a5 Rg8 41.Bc5 Rg2 42.Kc1 Re1 0–1. idontknow – edonaghy, net–chess.com, 2006.

2.Ba3 (--> 1.b4 e5 2.Ba3).

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

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

2.Ba3 d5 3.e3 Nf6 (--> 1.b4 e5 2.Ba3 Nf6 3.e3 d5).

2.Ba3 Nf6 3.Nf3 e4 4.Nd4 d5 5.e3 (--> 1.b4 e5 2.Ba3 Nf6 3.e3 d5 4.Nf3 e4 5.Nd4).

3.Rb1 Nc6 4.g4? Bg4 5.f3?? Qh4 0–1. pinochleterrorist – pierredl, Yahoo, 2005.

3.c3 c5 4.Nc2.

3.Nc3 Bb4 4.Nd5 Qd6 5.Nb4 Qb4 6.c3 Qe7 7.d3 a5 8.Nf3 d6 9.Rb1 c6 10.e4 Nf6 11.Be2 h6 12.0-0 0-0 13.Be3 Nfd7 14.Nd2 Na6 15.f4 f5 16.Nc4 fe4 17.de4 Nf6 (Better is 17...ef4 18.Bf4 d5 19.ed5 Nac5+/–) 18.Qd6+- Qd6 19.Nd6 Ng4 20.Bb6 ef4 21.Nc8 Rac8 22.Bg4 Rce8 23.Bf5 Nb8 24.Bc5 Rf5 25.ef5 Re4 26.Rb7 Na6 27.Bd6 Rc4 28.f6 gf6 29.Re1 Rc3 30.Re8 1–0. Trkn – guest1045, ICC, 2004.

3.c4 Nh6 4.e4 c5 5.bc5 Bc5=+ 6.Nc3?? Qf2. barbermachine – crazypyroman, internet, 2007.

(--> 1.b4 a5 2.b5 e5).

3.a4 c6 (---> 1.b4 a5 2.b5 c6 3.a4 e5).

3.Bb2 d6 4.e3 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5).

3.Bb2 e4 4.c4 d5 5.e3 c6 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.c4 e5 5.Bb2 e4).

3.bc6 bc6 4.e3 d6 5.Nf3 f6 6.d4 g6 (6...e4 7.Nfd2 f5 8.c4+-) 7.Be2 Nh6 8.0-0 Nf7 9.c4 Bg7 10.d5 c5 11.Nc3 0-0 12.Rb1 f5 13.Nd2 g5 Black intends f4 (13...e4 14.Qc2+-) 14.e4 f4 15.Bg4 h5 (15...Bg4 16.Qg4 Rb8 17.Rb8 Qb8 18.a3+-) 16.Bc8 Rc8 17.Qh5 Nh6 (17...a6 18.Nf3+-) 18.h3 Rf6 (18...Qe8 19.Qe8 Rfe8 20.Rb7+-) 19.Qg5 Qe8 20.Qh4 Rg6 21.Nf3 (better 21.Kh1+-) 21...Bf6+= 22.Qh5 (better 22.Ng5! Rg5 23.Qh6+=) 22...Rg2!-/+ 23.Kg2 Qh5 24.Nh2? (better 24.Rh1-/+) 24...Kh7 25.f3 Rg8 26.Ng4 Bh4?? (better 26...Qh4 27.Ne2 Ng4 28.fg4 Rg4 29.Kh2 Rg3-+) 27.Bd2?? (27.Rb7 Ng4 28.Rc7 Kh8 29.fg4 Rg4 30.hg4 Qg4 31.Kh2 Bg3 32.Kg1 Be1 33.Kh1-+) 27...Rg7 (27...Ng4 28.fg4 Rg4 29.Kh2 Bg3 30.Kg1 Qh3 31.Rf4 Bf4 32.Kf2 Rg2 33.Ke1 Qh1) 28.Be1 Qg5?? (better 28...Ng4!? 29.hg4 Rg4 30.fg4 Qg4 31.Kh1 Qh3 32.Kg1 Be1 33.Rfe1 Qc3-+) 29.Rg1 (29.Bd2 Qd8=+) 29...Be1-/+ 30.Rbe1 Qh4 31.Ne2 Rg8 (31...Nf7 32.Rb1-/+) 32.Rh1 (32.Rb1 a6=+) 32...Kg6 (32...Nf7 33.Rb1-/+) 33.Rb1=+ Kg5 (33...a6!?=+) 34.Rb7= Rg7 (34...Ng4?? 35.hg4 Qh1 36.Kh1+-) 35.Rb8 (35.Ra7 Kg6+=) 35...Kg6= (35...Ng4?? 36.hg4 Qh1 37.Kh1 Rh7 38.Kg2+-) 36.Rf8 (36.Ra8 Rg8 37.Ra7 Rb8=) 36...Qe7 (better 36...Kh7-/+) 37.Rf6+= Qf6 38.Nf6 Kf6 39.Kf2 Rg8 (39...a6!?=) 40.Rb1+/- Kg5 (40...Nf7 41.Rb7+/-) 41.Rb7 Rg7? (better 41...Ra8!?+/-) 42.Ra7+- Kh4 43.a4 (43.Ng1 Rg8 44.a4 Rb8+-) 43...Kh3 44.a5 Kh2 (44...Kh4 45.a6 Rg8 46.Rc7+-) 45.a6 (better 45.Ra8 Rh7+-) 45...Rg2 46.Kf1 (better 46.Ke1 Rg8 47.Rc7+-) 46...Rg8?? (better 46...Rg3 47.Ke1 Rf3 48.Rc7 Ng4=) 47.Rb7 (47.Rc7!? Rh8+-) 47...Ra8 (47...Kh3 48.Rc7 Kh4 49.a7+-) 48.a7 (48.Rc7 Rh8+-) 48...Nf7 (48...Kh3 49.Rc7 Kh4+-) 49.Rc7 Ng5 50.Kf2 (better 50.Rg7 Ra7 51.Ra7+-) 50...Nh3+/- 51.Kf1 Ng5 52.Ng1 (better 52.Rg7 Kh3 53.Rg5+-) 52...Kg3 53.Rg7 Kh4 54.Kf2 Kh5 55.Rb7 (better 55.Ne2 Kh6 56.Rd7 Nh3 57.Kg2 Ng5+-) 55...Kg6 56.Ke2 (better 56.Ne2+-) 56...Nf7 57.Kd3 Nd8 (57...Ng5 58.Rd7 Kh5 59.Ne2 Nf3 60.Nc3+-) 58.Rb6 (better 58.Rb8 Ra7 59.Rd8 Ra3 60.Kc2 Ra2 61.Kb3 Ra6+-) 58...Ra7 (58...Nf7 59.Ra6 Kg5+-) 59.Rd6 Kf7 60.Rd8 Ra3 61.Kc2 (better 61.Kd2!? Ra4+-) 61...Ra2 62.Kb3 Rg2 63.Rd6 (better 63.Nh3!? Rg3 64.Rh8 Kg7+-) 63...Rg1 64.Rd7 (better 64.Re6!? Rb1 65.Ka4 Rb4 66.Ka5 Rc4 67.Re5 Rc1+-) 64...Kf6 65.Ka4 Kg5?? (65...Rb1 66.Rd6 Kg7 67.Re6 Rb4 68.Ka5 Rc4 69.Re5+-) 66.d6 (66.Rg7 Kf6 67.Rg1 Kf7 68.Kb5 Ke8 69.Kc6 Ke7 70.d6 Ke8 71.d7 Kf8 72.d8Q Kf7 73.Qg8 Kf6 74.Qg7 Ke6 75.Rg6) 66...Kh4?? (better 66...Rb1+-) 67.Rg7 (better 67.Rh7 Kg3 68.Rg7 Kf2 69.Rg1 Kg1 70.d7+-) 67...Rg7-+ 68.Kb5 Rd7 (better 68...Kg3 69.Kc5 Kf3-+) 69.Kc5= Rd6?? (better 69...Kg3 70.Kd5 Rd6 71.Kd6 Kf3=) 70.Kd6+- Kg3 71.Ke5 (better 71.c5 Kf3 72.c6+-) 71...Kf3 72.Kf5?? (better 72.c5 Kg3 73.c6+-) 72...Ke3-+ 73.e5 f3 74.e6 f2 75.e7 f1Q 76.Ke6 Qe1 0-1. BeepBeepImAJeep (2760) - Geck0 (2435), lichess.org, 2019.

3.bc6 dc6 4.Bb2 Be6 5.Be5 f6 6.Bb2 Bd6 7.e4 Qd7 8.Nf3 0-0-0 9.Be2 Ne7 10.0-0 Ng6 11.d4 Nf4 12.c4 Bh3 13.Ne1 (13.gh3?? Qh3 14.Nh4 Ne2 15.Qe2 Qh2) 13...Bg2 (13...h5 14.Nd2 Bg4+-) 14.Bg4 Nh3 (14...Be4 15.Bd7 Rd7+-) 15.Kg2 Nf4 16.Kh1 (16.Kh1 Ne6 17.d5+-) 1-0. DEFFM – cristinel, freechess.org, 2021.

3.bc6+- dc6 4.Nc3 Bb4 5.Bb2 Nf6 6.e3 0-0 7.Rb1 Qe7 8.Be2 e4 9.Qc1 Rd8 10.f3 ef3 (better is 10...Bf5+-) 11.a3?? (11.Nf3 Bg4+-) 11...Bd6 (better is 11...fg2!? 12.Bf3 Bc3 13.Bc3-+) 12.Nd1?? (12.Nf3 Nd5 13.Nd5 cd5+-) 12...Nd7 (12...fg2 13.Nf2-+) 13.Nf2?? (13.Nf3 Nb6+-) 13...Nc5 (better is 13...fg2 14.Nf3 gh1R 15.Nh1-+) 14.Ne4?? (better is 14.Nf3 Na4 15.Ra1+-) 14...Bg4 (14...fg2 15.Nf2 gh1R 16.Nh1 Qh4 17.Kf1 Qh2 18.Bf3-+) 15.c4?? (better is 15.gf3 Ne4 16.Kf1-+) 15...f6 16.Qc3?? g6 17.d3?? Re8 18.a4 Qd7 19.Bf3 Re4 20.de4 Be6? 21.h4 Rf8?? 22.e5?? fe5?? 23.e4 Re8 24.Qd2 Qc8 1–0. Mueller,Siegfried – Zerbino,Claudio, ICCF EM/CL/Q15–2 ICCF Email, 2002.

3.Nf3= Qb4 4.Nc3 e4 5.Rb1 Qe7 6.Nd4 Nf6 7.e3 c6 8.d3 Qc5? (better is 8...c5!? 9.Nb3 d5=) 9.Ne4+/– Ne4 10.de4 a6 11.bc6 dc6 12.Bd3 Bd6 13.0-0+/– Bc7 14.Rb3 Qd6 15.f4 0-0 16.Ba3+– c5 17.Qh5 b6 18.e5 Qh6 19.Qh6 gh6 20.Nf5 Bf5 21.Bf5 Rd8 22.Rd3 Ra7 23.e6 Re8 24.ef7 Kf7 25.e4 Kg7 26.Rh3 Nc6 27.Bd7 Re4 28.Bc6 Rf4 29.Bb2 Kf8 30.Re1 Bd6 31.Re8 Kf7 32.Rh8 Rc7 33.Rh7 Kf8 34.Rh8 Kf7 35.Be8 Ke6 36.R8h6 Kd5 37.R6h5 Kc4 38.Rc3 Kb4 39.Rb3 Kc4 40.Bg6 Rf5 41.Bf5 Kd5 42.Bd7 Ke4 43.Bg4 Rf7 44.Bf3 Kf4 45.g3 1–0. Schulz,Hans_Juergen – Valica,Slavo, b2–b4.com, 2004.

3.Nf3 Qb4 4.Nc3 f6 5.e4+= d6 6.Rb1 Qa5 7.Bc4 d5 (better 7...Nd7!?+=) 8.Nd5+- Qa4?? (better 8...Ne7+-) 9.Nc7 Kd8 10.Na8 Qc4 11.d3 Qc3 (11...Qa2 12.Be3+-) 12.Bd2 Qc5 (12...Qa3 13.d4 ed4 14.Nd4 Qa2 15.Bf4+-) 13.0-0 Nd7 (13...Qa3 14.d4 Bg4 15.de5+-) 14.Bb4 Qb5 (14...Qb4 15.Rb4 Bb4+-) 15.Bf8 (better 15.Be7 Ne7 16.Rb5+-) 15...Nf8 (15...Qb1 16.Qb1 Nf8+-) 16.Rb5 b6 17.d4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Nf3= Qb4 4.Ne5 Qd4 (4...Qb5?! 5.d4=) 5.Nf7 Bc5–/+.

3.Nf3= Qf6 4.e4 b6 (4...Bc5!?=) 5.Bb2+= d6 6.d4 ed4 7.Bd4 Qf4 8.Nc3 c5 (better is 8...Ne7!?+/–) 9.Be5!+– de5 (9...Qe5 10.Ne5) 10.Qd5 Nd7 (10...c4 11.Ne2 Qf6 12.Qa8 Qd6+–) 11.Qa8 Kd8 12.Bc4 Nh6 (12...Be7 13.Rd1 a5 14.Ne2+–) 13.Rd1 a6 (13...Qf6+–) 14.ba6 Kc7 (14...Ng4+–) 15.Rd7! Kd7 (15...Bd7 16.Nd5) 16.Qa7 Kd8 17.Qb6 Kd7 (17...Ke8 18.Bb5 Bd7 19.Qb8 Ke7 20.Nd5 Ke6 21.Nf4 Ke7 22.Nd5 Ke6 23.Qe5) 18.Bb5 Ke7 19.Nd5 1–0. Baumann,Heinz – Grimm,Manfred, remoteschach.de, 2003.

3.Bb2 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 h6).

3.Bb2 e4 4.c4 Nf6 (4...a6 5.Qc2 Nf6 6.Nc3 ab5 7.Ne4 bc4 8.Nf6 gf6 9.Qc4=) 5.Bf6+= Qf6 6.Nc3 Qe6 (6...Qe5 7.e3 Bb4 8.f4+=) 7.e3+= Bc5 (7...Bd6 8.Qc2 f5 9.g4+-) 8.Qh5 (8.Qc2 f5+=) 8...d6 9.Qh4 (9.Nh3 c6 10.Qh4 f5+=) 9...f5= 10.Nd5 Bb6 (10...Qf7 11.Nh3 g6 12.Nhf4=) 11.Nh3 (better 11.Be2 g5 12.Qh5 Qf7 13.Nh3 Qh5 14.Bh5 Kd8 15.Rb1=+) 11...g5? (better 11...0-0=) 12.Ng5+- Qe5 13.d4 (13.Qh5 Kd7 14.Nf7 Qa1 15.Ke2 Qg7 (15...Qa2?? 16.Ne5 de5 17.Qf7 Kd8 18.Qe7) 16.Nh8 Qg4 17.Qg4 fg4+-) 13...ed3 (13...Ba5 14.Kd1 hg5 15.Qg5=+ (15.de5? Rh4 16.ed6 cd6-+)) 14.Qh5= Kd8?? (14...Kd7 15.Bd3 c6= (15...Qa1?? 16.Ke2 Qb2 17.Kf3+-; 15...hg5? 16.Bf5 Qf5 17.Qh8+-)) 15.Nf7 (15.Nf7 Kd7 16.Ne5 Ke6 17.Qf7 Ke5 18.Qf6 Ke4 19.f3) 1–0. GuestVWSD – GuestCZFH, freechess.org, 2020.

3.Bb2 f6 4.e4 g5? (better 4...Ne7!?+=) 5.Qh5+- Ke7 6.Bc4 (better 6.Nc3 c6 7.Bc4+-) 6...c6?? (better 6...Qe8 7.Qf3 d6+-) 7.Qf7 (7.Ba3 c5 8.Bc5 d6 9.Qf7) 7...Kd6+- 8.Ba3 Kc7 (8...c5 9.Nc3 Nc6 10.bc6 dc6+-) 9.Bf8 cb5 (9...Kb6 10.Nc3 Kc7 11.Qg7+-) 10.Nc3 a6 11.Nd5 (11.Bb3 b6 12.Qg7 Bb7+-) 11...Kc6 12.Nb4 (better 12.Ne7!? Kc7 13.Ng6 bc4 14.Nh8 Nc6 15.Qg8 d5 16.Qg7 Kb8+-) 12...Kb6 13.a4 (better 13.Bb3 d6 14.Qg7+-) 13...Ka5 (13...d6 14.Nd5 Kc5+-) 14.Nd5 d6 (14...Qf8 15.ab5 Qa3 16.Ra3) 15.ab5 1–0. Anonymous – Anonymous, lichess.org, 2020.

3.Bb2 c6 4.a4 cb5 5.ab5 (worse 5.Be5 Nc6 6.Bb2 b4=+) 5...a6 (better 5...d5!?+=) 6.Be5+- f6 7.Bb8 (7.Bf4!? g5 8.Bg3 d5+-) 7...Rb8+/- 8.e4 Ra8 (8...d5 9.Qh5 Nf7 10.Qd5 Qd5 11.ed5+/-) 9.Bc4 Nf7 (9...Qc7 10.Ra4 a5 11.Nf3+-) 10.Nh3 (10.Nc3 Bb4 11.Nd5 Bd6+-) 10...Ne5 (10...Bb4!? 11.Qe2 Qc7 12.0-0+/-) 11.Bd5+- h5 (11...Qb6 12.0-0+-) 12.0-0 Bb4 13.Nf4 g5 14.Nh5 f5?? (14...g4 15.Ng3 Qe7+-) 15.ef5 d6 (15...g4 16.Re1 d6 17.Ng3+-) 16.Ng7 (better 16.ba6 Ra6 17.Ra6 ba6+-) 16...Ke7 (16...Kf8 17.Ne6 Be6 18.fe6+-) 17.d4 Ng4 (17...Kf8 18.Ne6 Be6 19.fe6 Ng6+-) 18.Qg4 Qf8 19.Qg5 Kd7 20.c3 Bc3 21.Nc3 Rh7 22.Be6 Kc7 23.Nd5 Kb8 24.Rfc1 Be6 (24...Rh8 25.Qg3 Qd8 26.Rc8 Ka7 27.b6 Qb6 28.Nb6 Rf8 29.Ra8 Ra8 30.Nc8 Rc8 31.Bc8 Kb8 32.Qd6 Ka8 33.Qe7 Kb8 34.Qb7) 25.Ne6 ab5 (25...Qh8 26.Qg3 Rd7 27.b6 Qh7 28.Nf6 Re7 29.Qd6 Rc7 30.Qf8 Rc8 31.Rc8) 26.Ra8 Ka8 27.Ra1 Kb8 28.Nb6 Qg8 (28...Qf5 29.Qd8) 29.Ra8 (29.Qg8) 1-0. DEFFM – GuestFYZZ, freechess.org, 2021.

3.Bb2 Be7 4.Be5+= 0-0 5.e3 Nf5 6.Bd3 Ne3?? (better 6...d6 7.Bc3 Nh4+/-) 7.de3+- Bc5 (7...d6 8.Bc3 Nd7+-) 8.Bg7! Kg7 Decoy theme: g7 9.Qg4 Kh8 10.Qf5 Kg8 (10...Bb4 11.c3 Qh4+-) 11.Qh7 1-0. GuestGPPJ – GuestGBZN, freechess.org, 2020.

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

3.Bb2 f6 4.e4 Na6?? (better is 4...d5 5.ed5 Qd5=) 5.ba6+- ba6 6.Nc3 d6 7.Bc4 Bg4 8.Nf3 Bh5 9.Ba6 Qb8 (9...Rb8 10.Bb5 Ke7 11.Ne5 Rb5 12.Nc6 (< 12.Qh5 Re5 13.Nd5 Kd7 14.Be5 de5+-) 12...Kd7 13.Nd8 (< 13.Nb5 Bd1 14.Nd8 Bc2+-) 13...Bd1 A) 14.Kd1 Rb2 15.Kc1 Rb8-+; B) 14.Nd1?! Kd8 15.Rb1 c6+/–; C) 14.Rd1 Rb2 15.Na4 Rb4-+ (15...Rc2?! 16.Nb7–/+); D) 14.Nb5 Bc2 15.Ne6 Ke6 16.Nd4 Ke5 17.Nc2 Ke4 18.Ne3+-) 10.Bb5 c6 (10...Kd8+-) 11.Bc6 Kd8 12.Rb1 d5 (12...f5 13.Ba8 Qa8 14.d3+-) 13.Nd5 Qd6 (13...Bc5+-) 14.Ba8 (14...a6 15.d4 ed4 16.Bd4+-) 1–0. Taulien,Hans_Juergen – Boeer,Marko, remoteschach.de, 2002.

3.c4 d5 4.d3 (4.cd5 Qd5 5.Nc3 Qc5=) 4...c6 (4...Ng4 5.Nf3 Bc5 6.e3 dc4 7.h3=+) 5.Qd2 (5.Bh6 gh6 6.Nf3 dc4=+) 5...f6 (5...Bc5 6.Nf3 dc4 A) 7.Ne5? Qd4 (7...cb5?! 8.e3=+) 8.Bb2 Qf2 9.Kd1 cb5-+; B) 7.dc4=+) 6.Ba3 (6.cd5 cd5 7.d4 e4=+) 6...Nf7 (6...Ba3 7.Na3 0-0 8.cd5 Qd5 9.Rb1=+) 7.g3 (7.Bf8 Rf8 8.cd5 cd5=) 7...g6 (7...Ba3 8.Na3 Qe7 9.Qc3–/+) 8.Bb4 (8.Bf8 Rf8 9.Bg2 Be6 10.cd5 Bd5=+) 8...Bh6 (8...Be6 9.Bf8 Rf8 10.e3=+) 9.e3 (9.Qc2 cb5 10.cb5 Be6=+) 9...a5 10.Ba3 Bf5 (10...cb5 11.cb5 d4 12.Bg2–/+) 11.bc6 Nc6 12.Qb2 a4 13.Bg2 Qa5 14.Bb4?? Nb4-+ 15.a3 Nd3 16.Kf1 Nb2 17.Bd5-+ Bd3 18.Kg2 0-0 19.Nc3 Qc3 (20.Nf3 Nc4-+) 0–1. marchl@ – LeGurp@, mySchach.de, 2004.

3.c4 Ng4 4.Nc3=.

3.Bb2 c6 4.e3 b5 (4...Nf6 5.Nf3 e4 6.Nd4+=) 5.Nf3 c5 (better is 5...e4!? 6.Nd4 d5=) 6.bc5 (6.Bb5?! e4 7.Ng1 Qg5+=) 6...d6? (better is 6...e4!? 7.Ne5 Nc6+/–) 7.cd6 Qd6 (7...Bd6 8.Bb5 Bd7+-) 8.d3?? (better is 8.Ne5 Qd5 9.c4 bc4 10.Bc4 Qg2 11.Qa4 Nd7 12.Bf7 Kd8 13.Qa5 Nb6 14.Bd5 Qd5 15.Qd5 Nd5 16.Nf7 Ke8 17.Nh8+-) 8...Qd3?? (better is 8...Nd7+/–) 9.Bd3 f5 10.Bf5! b4 (10...Bf5 11.Qd5 Combination) 11.Bc8 bc3 12.Nc3 e4 13.Ne4 g6 14.Bh8 (14.Bh8 Bb4 15.Ke2+-) 1–0. Fournier,Frederic (1960) – lulaski (1665), Active, 2009.

3.d4 ed4 4.Qd4 Bb7 5.Qe5 Ne7 6.e4 d6 7.Qf4 Ng6 8.Qf5 Qf6 9.Bb5 c6 10.Qf6 gf6 11.Bf1 Bg7 12.Nf3 0-0 13.Nd4 Nd7 14.Nf5 d5 15.ed5 cd5 16.Be3 Rab8 17.Na3 Nde5 18.Nb5 Nc4 19.Na7 Nge5 20.Nb5 (20.Ng7?! Kg7 21.Nb5 Ra8+/–) 20...Ne3 21.fe3 Nc4 22.Nc7 Rfe8? 23.Ne8 Re8 24.Bc4 dc4 25.0-0 Be4 26.Ng7 Kg7 27.a4 Bd3 28.Rf3 h5 29.a5 Kh6 30.Rf6 Kg5 31.Rb6 Re3 32.Rc6 h4 33.a6 Re2 34.b5 Be4 35.a7 Rg2 36.Kf1 Rh2 37.a8Q Bd3 38.Kg1 Re2 39.Qg8 Kf4 40.Rf1 Ke3 41.Qg5 Ke4 42.Qh4 Ke3 43.Qf4# 1–0. Fritz 6 – NN, 2003.

3.e4 Bb7 4.d3 d5 5.Qa4 Nd7 6.Nd2 Ngf6 7.Ngf3 Bd6 8.d4 0-0 9.Bd3 de4 10.de5 ef3 11.Nf3 Ne5 12.Ne5 Be5 13.Qc2 Re8 14.0-0 Qd5 15.f3 Rad8 16.Rd1 Kh8 17.Bg5 Bd4 18.cd4 Qg5 19.Qf2 Re3 20.f4 Qd5 21.Rac1 Rde8 22.Bc4 Qe4 23.Bf7 Re2 24.Qf3 Rg2 0–1. sekhmet – w77, playchess.de, 2001.

3.Nf3 d6 4.d3 h6 (4...Nf6 5.e4=) 5.h3 (5.e4 Nf6+=) 5...Qf6 (5...Nf6 6.e4=) 6.g4 (6.e4 a5+=) 6...Be7 7.Bg2 Bb7 (7...d5 8.Nbd2=) 8.e4 (8.g5 hg5 9.Bg5 Qf5=) 8...Qg6 9.Be3 h5 10.Ne5?? (Better is 10.g5+=) 10...de5-+ 11.Qa4 Bc6 12.b5 Bb7 13.Qc4 c5 14.Rg1 hg4 15.Bf3 Qf6 16.Rg3?? gh3 17.Bg5 Qd6 18.Be7 Ne7 19.Rg7 h2 20.Nd2 h1Q 21.Bh1 Rh1 22.Nf1 Qf6 23.Rg4 Nd7 24.Ke2 a6 25.Qa4 ab5 26.Qb5 Bc6 27.Qc4 Qe6 28.f3 Qc4 29.dc4 b5 30.Rb1 bc4 31.a3 Ra3 32.Kd2 f5 33.Rg5 fe4 34.Ng3 Rb1 35.fe4 Ra2 36.Ke3 Rb3 37.Ne2 Nb6 38.Rh5 Na4 39.Rh8 Kd7 40.Kf3 Nc3 41.Ng3 Ne4 42.Kg4 Rg3 43.Kh4 0–1. kruiki – manormoIV, Live Game Caissa's Web, 2004.

3.d3 Nf6 4.Nf3 e4 5.de4 Ne4 6.Qc2 Nf6 7.e3 0-0= 8.Bc4 Nc6 9.0-0 Ng4 10.h3 Nge5= 11.Ne5 Ne5 12.Bd3 (12…Nd3 13.Qd3=; 12.Bd5!?=). katrica (1645) – mrj, internet, 2007.

3.d4 e4 (better is 3...ed4 4.Nf3 Nf6+=) 4.f3 (4.Nd2 e3 5.Ne4 ef2 6.Nf2 a5+/–) 4...Nf6 (better is 4...Qh4!? 5.Kd2 Nf6–/+) 5.fe4 Ne4 6.Nd2?? (better is 6.Nf3 0-0 7.Nbd2+=) 6...Nc3 (6...Qh4 7.g3 Bg3 8.hg3 Qg3) 7.Qb3 (7.Nc4 Nd1 8.Nd6 cd6 9.Kd1-+) 7...Qh4 8.g3 Bg3! 9.hg3 (9.hg3 Qg3 Mate attack) 9…Qg3 (9...Qh1 10.Ngf3 Ne2 11.Ke2=) 0–1. Kostova,Maria – Cvikova,Katarina, II. Ladies Slovakia Championship, Semif, 2009.

3.e4 Nf6 4.d3 0-0 5.a3 c5 (5...Be7 6.Nf3=+) 6.h3 (6.Be3 Na6=) 6...Nc6 (6...Be7 7.bc5 Bc5 8.d4=+) 7.b5 (7.Nf3 a6=) 7...Na5 (7...Ne7 8.Nf3=) 8.c4 (8.Nf3 Bc7=) 8...b6 (8...a6 9.Nc3=) 9.Ra2 (9.Be2 Be7=) 9...Bb7 (9...Be7 10.Nf3 d6 11.Be2=) 10.g4 (10.Nf3 a6 11.Nc3 Ne8=) 10...Be7 11.f3 (11.Nc3 a6=) 11...h5 (11...Ne8!?=+) 12.g5 (12.Bg2 Nh7=) 12...Nh7 13.h4 g6 (13...a6 14.ba6 Ra6 15.Bh3=) 14.f4 (14.Ne2 a6=) 14...ef4 (14...Nc4 15.dc4 Be4 16.Bg2 Bb1 17.Rb2=) 15.Bf4 d5 (15...f5!? 16.gf6 Bf6=) 16.ed5 (16.cd5 f5 17.Rf2 Bd6+-) 16...Bd6 (16...Re8 17.Re2+-) 17.Bd6+- Qd6 18.Re2 (18.Rf2 f5+-) 18...Rfe8 (18...a6 19.Nc3+=) 19.Kd2 (19.Qc2 Qg3 20.Kd1 Re2 21.Be2 Qg2+=) 19...Qf4 (19...a6 20.Nc3=) 20.Kc2+= Re2 (better 20...a6 21.Qe1 Re2 22.Ne2 Qe5 23.ba6 Ba6+=) 21.Be2?? (21.Ne2 Qb8+-) 21...Re8?? (better 21...Nc4 22.dc4 Qe4 23.Bd3 Qh1–/+) 22.Nf3 (22.Nc3 a6+-) 22...Nf8 (22...a6!? 23.ba6 Ba6+=) 23.Rf1 (23.Nc3 a6 24.Qd2 Qb8+-) 23...Nd7 (23...a6 24.ba6 Ba6 25.Nc3+-) 24.Rf2 (24.Nc3 a6+-) 24...Ne5 (better 24...a6 25.ba6 Ba6+=) 25.Nbd2 (25.Qd2 Qf5 26.Kb2 Ng4+=) 25...Nf3 (better 25...Ng4 26.Qg1 a6 27.ba6 Ba6–/+) 26.Kb2?? (better 26.Nf3 a6 27.ba6 Ba6 28.Qd2+=) 26...Qd4-+ 27.Kc2 Nd2 28.Rf6 (28.Rf7 Ndc4 29.dc4 Kf7 30.Qd4 cd4-+) 28...Ndb3 29.Qf1 (29.d6 Qh4 30.d7 Nd4 31.Kb1 Rd8-+ (31...Re2 32.d8Q Kg7 33.Qc7 Rb2 34.Kb2 Qh2 35.Qh2+-)) 29...Re7 30.Bd1 (30.Rf3 Qe5 31.Rh3 Nd4 32.Kb1 Ne2 33.d6-+) 30…Qa1 (30...Qa1 31.Rg6 fg6 32.Qf8 Kf8 33.d4 Qc1 34.Kd3 Qc4) 0–1. patrick317 – puttepop, gameknot.com, 2016.

3.g3 Nf6 4.Bg2 0-0 5.Nf3 e4 6.Ng5 Re8 7.d3 ed3 8.Qd3 Nc6 9.0-0 Ne5 10.Qd1 Neg4 11.Qb3 Re7 12.Bd5 Nd5=+ 13.e4?? Ndf6 14.Re1 Be5 15.Be3 d5 16.ed5 Nd5 17.c4 Ba1 18.cd5 Ne3 19.Re3 Re3 20.Qe3 Bf5 21.Nd2 h6 22.Ngf3 Qd5 23.Nb3 Be4 24.Nh4 Bf6 25.Nf3 Bf3 (26.Nd2 Bh1-+) 0–1. rooked (2000) – mcgoo (2050), net–chess.com, 2004.

3.d3 f5 4.de4 fe4=+ 5.e3 d5 6.g3 g6 7.Bg2 (7…Nf6 8.Ne2–/+; 7.Bb2 Nf6=+). katrica (1645) – AndrewDev, internet, 2007.

3.d3 Nf6 4.de4 Ne4 5.Be3 Qf6 6.Nf3 Nc3–/+ 7.Nc3 Bb4-+ 8.Bd2 Bc3 9.Bc3 Qc3 10.Nd2 Qb2 11.e3 d5 12.Be2 Bf5 13.0-0 Nc6 14.f3 Qb6 15.Qb3 Qb3 16.ab3 0-0 17.e4 de4 18.fe4 Be6 19.Bb5 Rad8 20.Rad1?? Ne5 21.h3 a6 22.Be2 h6 23.Nf3 Nf3 24.Bf3 Bb3 25.Rd8 Rd8 26.Rb1 Rd3 27.e5 b5 28.Bh5 g6 29.Bf3 Re3 30.h4 Bc4 31.Rd1 Re5 32.Kh2 c5 33.Ra1 b4 34.Kg3 g5 35.hg5 Rg5 36.Kh2 b3 37.Rb1 a5 38.Bc6 f5 39.Ba4 f4 40.Bb3 Bb3 41.Rb3 Rh5 (42.Kg1 Kf7-+) 0–1. alanwsp (1835) – pjp (1730), net–chess.com, 2004.

3.d3 Nf6 4.Bg5 Be7 5.de4 Ne4=+ 6.Be7 Qe7 7.Nd2 Nc3–/+ 8.Qb3 Qf6 9.Rc1+= d5? 10.Rc3 0-0 11.Rf3 Bf5 12.e4 Qa1 13.Ke2 Be4 14.Ne4 de4–/+ 15.Rf4 Nc6 16.Qd1?? Qb2 17.Ke1 Qb4 18.Qd2–/+ a5 19.Re4?? Qe4-+ 20.Be2 Qg2 21.Bf3 Rfe8 22.Ne2 Qf3 23.Rg1 Nd4! 24.Kd1 Ne2 25.Re1 Nc3 26.Kc1 Na2! 27.Kb2 Nb4 28.Re8 Re8 29.Qc3 Qf2 30.Kb3 Re3 31.Qe3 Qe3 (32.Kb2 Qd2 33.Kb1 Qc2 34.Ka1 Qc1; 31...Qc2 32.Ka3 Qa2) 0–1. Headhunter70 – eccastro, internet, 2007.

3.d4 d5 (--> 2.c3 d5 3.d4 e4).

3.d3 a6 4.Nf3 d6 5.e4 b5 6.a4 Bd7 7.d4 ba4 8.de5 de5 9.Ne5 Bb5 10.Qd8 Bd8 11.Bc4 Bc4 12.Nc4 Nc6 13.Ra4 Nge7 14.Be3 0-0 15.Nbd2 Ng6 16.f4 Nh4 17.Kf2 Ng6 18.Rha1 Be7 19.b5 a5 20.bc6 Bd6 21.Nd6 cd6 22.Ra5 Ra5 23.Ra5 Ne7 24.c7 Nc6 25.Ra6 Ne7 26.Rd6 Ra8 27.Rd8 Rd8 28.cd8Q 1–0. guest1149 – guest387, ICC, 2003.

3.d3 d5 4.Bd2 Nf6–/+ 5.g3 0-0 6.Bg2 Bg4 7.a4 c6 8.Na3 a5–/+ 9.b5 Qb6 10.Be3 d4 11.Nc4=+ Qc5 12.cd4 ed4 13.Bd2 Nbd7 14.Na5 cb5 15.Nb3 Qb6 16.ab5 Ra1 17.Qa1+= Qb5 18.Nd4 Qb6 19.Ngf3 Bf3 20.Nf3 Bb4 21.0-0 Bc5 22.d4+- Bd6 23.Rb1 Qc6 24.Ne5 Qc7 25.Rb7 Qb7 26.Bb7 Re8 27.Nd7 Nd7 28.e4 f6 29.Qa6 Be7 30.Qe6 Kh8 31.Qd7 Rd8 32.Qe7 Rg8 33.Bh6! gh6 34.Qf6 Rg7 35.Bd5 h5 36.Qf8 (36…Rg8 37.Qg8#) 1–0. Ziese,Gerhard – Kientzler,Roland, corr SOK–89–37, 1989.

3.e3 Nf6 4.Nf3 0-0 (4...e4 5.Nd4+=) 5.d3 d6 6.Nbd2 a5 7.a3 ab4 8.cb4 c6 9.Bb2 Be6 10.Be2 d5 (10...b5!?+=) 11.0-0 c5 12.bc5 Bc5 13.Nc4?? (better is 13.Be5 Nbd7 14.Bd4+/–) 13...dc4-+ 14.dc4 Qd1 15.Rfd1 Nc6 16.Rab1? (16.Ne5 Ne5 17.Be5 Nd7-+) 16...Rfd8 (16...Bf5 17.Ne5 Bb1 18.Rb1 Ba3 19.Nc6 bc6 20.Bf6 gf6 21.g3-+) 17.g3? (better is 17.Ne5 Rd1 18.Rd1 Ne5 19.Be5-+) 17...Rd1 18.Bd1 Rd8 19.Be2 Ne4 20.Kg2?! Ng3 21.hg3 f5 22.Bd1?? f4 23.ef4 ef4 24.Bc2 fg3 25.fg3 Rf8?? 26.Rf1?? Bg4 27.Bd1 Bf3 28.Bf3+= Ne5?? 29.Be5+- Bd6 30.Bd6 Rf6 31.c5 Rg6 32.Rf2 h5 33.Bb7 h4 34.Bf3 hg3 35.Bg3 Rg3 36.Kg3 (36.Kg3 g6 37.c6 Kf8 38.c7 g5 39.c8Q Ke7 40.Bc6 Kd6 41.Rf5 g4 42.Qd7) 1–0. Fournier,Frederic (1815) – Gandinnik (1690), Active blind, 2011.

3.Qa4 c6 4.Nf3 b5 5.Qb3 Bb7 6.e4 d5 7.ed5+= cd5 8.Bb5 Nd7 9.0-0 Bd6 10.c4 d4? 11.c5+- Bb8 12.c6 (12…Bd6 13.cb7+- (< 13.cd7 Ke7+-)) 1–0. b4_player (2140) – zzz3012, GameColony.com, 2004.

3.e3 d5 4.Nf3 Nc6 5.d3 a6 6.Bb2 Bd6 7.Be2 Nge7 8.Nbd2 0-0 9.0-0 d4 (9...f5 10.a3=) 10.ed4 (10.cd4!? ed4 11.Nd4 Bb4 12.Qb3 Kh8 13.Ne4+=) 10...ed4= 11.cd4 (11.Nd4 Nd4 12.cd4 Nd5=) 11...Nb4 12.Rb1 Bf5 13.a3 Nd3?? (better is 13...Nbd5+=) 14.Bd3 Bd3 15.Ba1?? (better is 15.Qb3 Nd5 16.Qd3+-) 15...Bf1 16.Nf1 b5 17.Ne3 Ng6 18.d5 Ne5 19.Ne5 fe5 20.g3 Qf6 21.Rc1 Qg6 22.Rb1 e4 23.Qd4 Rad8 24.Qg7 Qg7 25.Bg7 Kg7 26.Rc1 Ba3 27.Ra1 b4 28.Ra3 ba3 0–1. Fournier,Frederic (1915) – TIGRECAMPEON (1630), Active blind, 2011.

3.e4 Nc6 4.Bb5 a6 5.Bc4+= b5 6.Bd5 Bb7 7.d3 Rb8 8.Bg8 Rg8+= 9.Qh5 g6 10.Qh7 Rg7 11.Qh4 g5 12.Qh5+/– Ke7 13.Ne2 d5 14.0-0 de4 15.de4 Qd3 16.Ng3 Bc8 17.Be3 a5?? 18.Bc5 Ke6 19.Bf8 Rf7 20.Bc5 Rg7 21.Qe8 Ne7 22.Nf5 Rh7 23.Ne7 Qe4 24.Nc8 Kf5 25.Ne7 Re7 26.Qe7 c6 27.Qh7 Kf4 28.g3 Kf3 29.Nd2 Ke2 30.Qe4 Kd2 31.Rfd1 Kc3 32.Qd3 Kb2 33.Rd2 Ka1 34.Qf1 1–0. rodnel – sbderkach (1680), net–chess.com, 2006.

3.e4 Qf6 4.Qf3 d6 5.Qf6 gf6 6.f3 Be6 7.a4 Nc6 8.a5 f5 9.b5 Nd8 10.a6 fe4 11.fe4 b6 12.Ba3 Ng4 13.h3 Nf6 14.Nf3 Ne4 15.Bd3 Nc5 (better is 15...Ng3!? 16.Rg1 e4-+) 16.Bc5+= bc5 17.Ng5 h6 18.Ne6 Ne6 19.Be4 Rb8 20.Na3 Bg7 21.Bd5 Nf4 22.Bc6 Kf8 23.Nc2 d5 24.0-0 Rd8 25.Rf3 Ne6 26.Ne3 e4 27.Rf2 h5?? (better is 27...d4 28.Nd5 Rd6=) 28.Bd5+- Ng5 (28...Kg8+-) 29.h4 Nh7 (29...Bd4 30.Bc4 Be3 31.de3 Nh3 32.gh3 Rd7+-) 30.Rf7 Kg8 (30...Ke8 31.Rg7 Nf6 32.Bc6 Kf8 33.Rc7+-) 31.Rd7 Kf8 32.Rd8 Ke7 33.Rh8 Bh8 34.Nf5 (34.Nf5 Kf6 35.Be4+-) 1–0. maddoxdb – changazi, gameknot.com, 2013. (=1.c3 e5 2.b4 Nh6)

3.g3 Qf6 4.Nh3 d6 5.Bg2 Ng4 (6.d3 c6=; 5...d5 6.d3 a5 7.Ng5=+). Ridgereeno – monas, ChessWorld.net, 2005.

3.a3 Nd4 4.e3= Nf5 5.e4 Nd4 6.Bc4 d5 7.ed5 c5 8.dc6!+/– bc6 9.Qh5 g6? 10.Qe5+- Ne7? 11.Qh8 Bg4 12.Qh7 Nc2 13.Kf1 Qd4 14.Qf7 Kd8 15.Qf8 Kd7 16.Qa8 Qe5 17.Qa7 Kd8 18.Nf3 Bf3 19.gf3 Qe1 20.Kg2 Qe5 21.d3 Nf5 22.Bg5 Ke8 23.Qf7 1–0. pjp (1680) – mjfogs, net–chess.com, 2004.

3.b5 Nb8 4.Ne4 a6 5.Rb1 ab5 6.Rb5 d6 7.e3 Ra2–/+ (8.d4 Bf5–/+) 0–1. pakistan – Daniel A, internet, 2007.

3.b5= Nd4 4.e3 Nf5 5.Nf3 d6 6.h4 Be6 7.Ng5 Nh4 8.Ne6+= Qe7?? 9.Bc4 Ng2 10.Kf1+/– Nh4?? 11.Nc7 Qc7 12.Rh4 Be7 13.Rg4 h5 14.Rg7?? Qc4=+ 15.Ke1 e4 16.f3?? Kf8 17.Rg2 Bh4 (18.Rf2 Nf6-+) 0–1. tuergeist – crca108, Kellertunier, 2005.

3.e4 Nf6 4.d4 ed4 5.Qd4 Nc6 6.Bb5 a6 7.Bc6 bc6 8.Bg5 h6 9.Bf6 gf6 10.Nf3 Bg4 11.Nd2 Rg8 12.0-0 c5 13.bc5 dc5 14.Qa4 Ke7?? 15.Nd5+- Kd6 16.Nc4 Ke6 17.Nf4 Ke7 18.Nd5 Ke6 19.f4 c6 20.f5 Bf5 21.ef5 Kd7 22.Nf6! Qf6 23.Rad1 Ke7 24.Rfe1 Qe6 25.fe6 fe6 26.Nb6 Rb8 27.Rd7 Kf6 28.Rf1 Kg5 29.h4 Kh5+- 30.Rdf7 Bd6 31.Nd7 Rb4 32.Nf6 Kg6 33.h5 Kf7 34.Ng8 Kg8 35.Qc6 Bg3 36.Qe6 Kh8 37.Rf8 Kh7 38.Qg8 (38.Qg6) 1–0. Papa Lazarou II – lucky bucky, ChessWorld.net, 2004.

3.Nf3 Nf6 4.e3 e4 5.Nd4 d5 6.Rb1 c6 (6...Bd6 7.Be2=) 7.Be2 (7.d3 Nbd7+=) 7...a5= 8.ba5 Qa5 9.f3 (9.0-0!?+=) 9...ef3+= 10.Bf3 Bd6 11.0-0 Qc7 12.g3 0-0 13.Bb2 Nbd7 14.Nf5 Ne5 15.Be2 Bf5 16.Rf5 Ned7 17.Qe1 b5 18.Ra1 Ra7 19.a4 (19.Nd1 Rfa8–/+) 19...b4 20.Nd1 Rfa8 21.Nf2 Ra4 22.Ra4 Ra4 23.Qf1 Be5 24.d4 Bd6 25.Bd3 Ra2 26.Qb1 Qa7 27.Kg2 (27.e4 g6 28.Rf3 de4 29.Be4 Ne4 30.Ne4 Ne5-+) 27...Nb6 28.Kh1?? (better is 28.Rf6 gf6 29.Ng4-+) 28...Nc4 29.Bc4 dc4 30.c3 b3 31.Qc1 (31.Kg2-+) 31...Ba3 32.Ba3 (32.Qf1 Rb2 33.Nd1-+) 32...Qa3 33.Qa3 Ra3 34.Nd1 Ra1 (34...Ra1 35.Rf1 Ng4-+) 0–1. blake507 (2020) – chess_research (2225), gameknot.com, 2014.

3.cd5 Qd5 4.e3 Bb4–/+ 5.Qa4 Nc6 6.Bb5?? Qg2-+ 7.Bc6 bc6 8.Qc6 Qc6 (9.f3 Qc1 10.Kf2 Qb2-+) 0–1. Robbie101 – CODD (1835), internet, 2007.

3.e3 Bb4–/+ 4.Qb3 Na6 5.Qa4 Bd7 6.Qc2 (6…dc4 7.Nf3–/+; 6.Qb3 Bc6–/+). Cleopatre – Prashant Sinha, internet, 2007.

3.Bb2 f5 4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6).

3.e4 Nc6 4.a3 Nf6 5.Nc3 Be7 6.Nf3 Bg4 7.Be2 Qd7 8.b5 Nd4 9.Nd4 Be2?? (better is 9...ed4 10.Bg4 Ng4+=) 10.Nde2+- (worse is 10.Ke2 ed4 11.Nd5 Qg4 (11...Ne4?! 12.Re1 Nf6 13.Ne7 Ke7 14.Kf1 Kd8 15.Bb2=) 12.f3 Qg2 13.Kd3 Nd5 14.cd5 f5–/+; 10.Qe2?! ed4 11.Nd1 0-0=; 10.Nce2?! ed4 11.d3 d5 12.ed5 a6+/–) 10...0-0 11.d4 c6 12.a4 cb5 13.de5 Ne8 (13...b4 14.ef6 Bf6+-) 14.ed6 Bd6 (14...Qd6 15.ab5 Qe6 16.Qd5+-) 15.Nb5 (15.c5 Rd8 16.cd6 b4+-) 15...a6 (15...Bb4 16.Nbc3 Qe6+-) 16.Nd6 Nd6 (16...Qd6 17.Ba3 Qe5 18.Bf8 Kf8 19.f3+-) 17.0-0 (17.c5 Qe6 18.cd6 Qe4+-) 17...Rfe8 (17...Qc6 18.Ba3 Rfd8 19.Bd6 Rd6 20.Qc2+-) 18.Bf4 (18.c5 Re4 19.Ng3 Re6+-) 18...Rac8 (18...Rad8 19.Bd6 Qd6 20.Qd6 Rd6+-) 19.Qd6 Qg4 (19...Qd6 20.Bd6 Re4 21.Ng3 Rec4 22.Rfb1+-) 20.f3 Qg6 21.Qg6 fg6 22.Rac1 h6 23.Rfd1 g5 24.Bd6 White prepares c5 24...Kh7 25.c5 g6 26.e5 h5 27.Nd4 Kh6 28.e6 h4 29.e7 Kh5 30.Ne6 a5 31.Ng7 Kh6 32.Ne8 Re8 33.c6 bc6 34.Rc6 Kh5 35.Rdc1 g4 36.R1c5 Kh6 37.Rc8 Rc8 38.Rc8 Kg5 39.Rc5 Kh6 40.e8Q g5 41.Bf8 Kh7 42.Qf7 Kh8 43.Qg7 1–0. epasacrifice – pieeater, chessworld.net, 2012.

3.Bb2 Bb4 4.c3 Ba5 5.Nf3 d6 6.e4 Bg4 7.h3 Bf3 8.Qf3=+ Qf6 9.Nd2 Qf3 10.gf3 Nge7 11.Nb3 Bb6 12.Rg1 g6 13.h4 0-0-0 14.Bh3 Kb8 15.d4 ed4 16.cd4=+ Rhe8 17.d5? Ne5 18.Rg3?? Nd3-+ 19.Kf1 Nb2 20.Rb1 Nd3 21.Rd1 Nf2 22.Rd2 Nh3 (22...Nh3 23.Rh3 c6 24.dc6 bc6-+) 0–1. Conny@ – Hartmut, mySchach.de, 2003.

3.b5 Nb4 4.a3 Na6?? 5.ba6+- ba6 6.g4 Bb7 7.f3 Bf3?? 8.Nf3 Rb8 9.Be3 Nf6 10.Ba7 Rb1 11.Qb1 Ng4 12.Qb8 Ne3 13.Ne5 (13.Ne5 Qb8 14.Bb8 (14.Be3?? Qb2 15.Rd1 Qe5-+) 14...Nc2 15.Kd2 Na1 16.Bh3 Nb3 17.Kc3+-; better is 13.Qd8 Kd8 14.Be3+-) 1–0. richard_rl – Suzane, InterAjedrez (year?).

3.c3 ed4= 4.b5 Nce7 5.Nf3 dc3=+ 6.Nc3 Nf6 7.e4 d5 8.e5 Ne4 9.Ne4 de4 10.Qd8 Kd8 11.Ng5 Kd7 12.Nf7 Rg8 13.Bc4 Ke8 14.Ng5+- Rh8 15.0-0 Bf5+/– 16.Rd1 (16…Bg6 17.Re1+-) 1–0. Knorr,B – Lang,L, corr SOK–92–92, 1992.

3.de5 Ne5 4.a3 Be7 5.Qd4 d6 6.c3 Nf6 7.h3 b6 8.Qd1 Bb7 9.Nd2 Ne4 10.Ne4 Be4 11.f3?? Bb7 12.Be3 Nc4 13.Qc1 Ne3 14.Qe3 0-0 15.Rd1 Bc6 16.g3–/+ Re8 17.Qf4 Bg5-+ 18.Qg4 Ba4 19.Rd4?? Re3 20.b5 Rc3 21.Ra4 Rc1?? 22.Kf2+- Qf6? 23.f4 h6 24.h4 Qb2 25.Re4 Bf6 26.Kg2?? Qb5 27.a4?? Qd5?? 28.Qf3= Kh7 29.g4 Rf1? 30.Kf1+- Qd1 31.Kg2 d5 32.Nh3 Qd2 33.Re3 Qa5 34.g5 Bc3 35.gh6 gh6 36.Qh5 Rg8 37.Ng5 Rg5 38.hg5 Bd4 39.Qh6 (39…Kg8 40.Re8) 1–0. nmorgan (1770) – kmorgan (1770), net–chess.com, 2003.

3.de5 Ne5 4.Bb2 Bb4–/+ 5.c3 Ba5 6.Qd4 Qf6 7.Na3?? Ne7 8.Qe5?? Qe5-+ 9.Rc1 Nd5 10.Nf3 Qf6 11.e4 Nc3 12.Bd3 Na2 13.Nd2 Qb2 14.Rc2 Qa3 15.0-0 Qd3 16.Ra2 Bd2 17.Rd1 Qe4 18.Rad2 0-0 (19.Rb2 Re8-+) 0–1. juancabeta – Variax (1640), internet, 2007.

3.de5 Ne5 4.Nf3 Bb4 5.c3 Bf8?? 6.Ne5+- Bd6 7.f4 f6 8.Nd3 Bf8 9.Na3 d5 10.c4 c6 11.cd5 cd5 12.e3 Nh6 13.Be2 Bd6 14.Qa4 Bd7 15.Qd4?? Bc6? 16.0-0+- Qa5 17.Bh5 g6? 18.Bf3 Bc5?? 19.Qf6 Nf7 20.Nc5 Qc5 21.Qe6 Kf8 22.Re1 Qe7?? 23.Qe7 Ke7 24.e4 de4 25.Be4 Nd6 26.Bc6 Kf8 27.Bd5 Nf7 28.Bf7 Kf7 29.Bb2 Rhg8 30.Nb5 a6 31.Nc7 Rac8+- 32.Be5 Ke7 33.Nd5 Ke6 34.Nb6 Rc5 35.Bd4 (35…Kd6 36.Bc5 Kc5 37.Re6+-) 1–0. ppost (2020) – christiaan (1850), net–chess.com, 2005.

3.a3= Qd6 4.Bb2 f6 5.Nd2 Qa6? 6.de5 fe5 7.Be5 Qb5 8.Bc7+- Qc6 9.Bf4 (9.Be5 d6 10.Bd4 Bf5+-). pierre – Assassine, ChessHere.com, 2006.

3.b5 Qb4=+ 4.c3 Qb5 5.e4 Qc6 6.Bd3 Nf6 7.Nf3= Ne4 8.Ne5+/– Nc3 9.Nc6 Nd1+/– 10.Nb8 Nf2 11.Kf2 Rb8 12.Nc3 Be7 13.Re1 d6? 14.Nd5+- Be6 15.Ne7 Ke7 16.d5 Rbe8 17.Rb1 Rhf8 18.Rb7 Kd7 19.Bb5 Kc8 20.Ra7 Bd5 21.Be8 Kb8 22.Ra5 Bb7 23.Re7 f5 24.Rb5 f4 25.Bc6 f3 26.Rb7 Kc8 27.Rec7 Kd8 28.Bg5 Rf6 29.Rg7 fg2 30.Bf6 Kc8 31.Rgc7# 1–0. Pierred – Zero65, Rated game, 1m + 3s, 2005.

3.c4 Bb4 4.Nc3?? (Better is 4.Bd2 Bd2 5.Nd2 ed4 6.Nb3–/+) 4...Bc3-+ (5.Bd2 Bd4-+) 0–1. Roookie – Caissa, Live Game Caissa's Web, 2004.

3.e4 –/+.

(--> 1.b4 d5 2.e3 e5).

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

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

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

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

3.c4 f5 4.d4 e4 5.d5 c5 6.a3 Be7 7.Nc3 Nd7 8.Nh3 Ngf6 9.Be2 Ne5 10.Bb2 b6 11.0-0 0-0 12.Qb3 Bd7 13.Rad1 h6 14.f4 ef3= 15.gf3 Qe8 16.f4 Neg4 17.Rf3 Kh7 18.Bd3 Qh5 19.Rg3 Qh4 20.Qc2 Nh5 21.Rf3 Rf7 22.b5 Raf8 23.Ne2 g6 24.Kh1 Bf6=+ 25.Bc1 Bg7 26.Bd2 Qe7 27.Rg1 Nhf6 28.a4 Ne4 29.Ng3 Ngf6 30.Nf2 Re8 31.Nf1 Nf2 32.Rf2= Ne4 33.Rfg2 g5 34.Be1 Bf6 35.Be2 g4 36.Bd3 h5 37.Nd2 Kh6 38.Nf1 h4= 39.Re2 h3 40.Ng3+= Bh4 41.Ne4 fe4 42.Bh4 ed3 43.Be7 dc2 44.Bd6 Bf5 45.Rge1 Be4 46.Kg1= Kh5 47.Rd2 Kh4 48.Be5 g3 49.d6 g2 50.Rc1 Kg4 51.Re1 Rd7 52.Kf2?? Re5!-+ 53.fe5 Rf7 (54.Ke2 Rf1 55.Rf1 gf1Q (55...gf1R 56.Rc2 Rh1 57.d7–/+) 56.Kf1 c1Q 57.Ke2 Bg2 58.Rd1 Bf3 59.Kf1 Qd1 60.Kf2 Qe2 61.Kg1 Qg2#) 0–1. Szabo,M – Blauhut,H, corr SOK–89–49, 1989.

3.e4 Nf6 4.d3 g6 5.Bg5 Bg7 6.Nf3= 0-0 7.Nc3 Nc6 8.b5 Ne7 9.Be2 c6 10.bc6 Nc6 11.0-0 h6 12.Be3 d5 13.ed5 Nd5 14.Nd5 Qd5 15.c4 Qa5 16.Bd2 Qc7 17.Rb1 Be6 18.Re1 f5 19.Rb5 e4 20.de4 fe4=+ 21.Nh4 Qf7–/+ 22.Be3 Rab8 23.Bc5 Rfd8 24.Qb1 a6 25.Rb3 g5 26.Qe4 gh4 27.Qh4 b5 28.Rg3 Kh8 29.cb5 ab5 30.Qe4 Bd5-+ 31.Qh4 Ba2 32.Bd3 Rd5 33.Ba3 Re8 34.Rge3 Re3 35.Re3 Ne5 36.Be2 Bc4 37.Bh5 Qf5 (38.Bc1 Bf6-+) 0–1. Szabo,M – Dopper,Johan, corr SOK–92–91, 1992.

3.Nf3 Bg4 4.h3= Be6 5.Bb2 f5 6.Be2 Nf6 7.0-0 d5 8.Ne5 Bb4= 9.c3 Bd6 10.Bh5? g6 11.Ng6 hg6 12.Bg6 Bf7 13.Bf5–/+ Nbd7 14.e4 de4-+ 15.c4 Rh5 16.Bg4 Ng4 17.Qg4 Rh4 18.Qf5 Rf4 19.Qb5 b6 20.Re1? Qh4 21.Bd4 c5?? 22.Be3?? Rf6-+ 23.Nc3 Kd8 24.Qc6?? Bh2! 25.Kh2 Rc6 26.Ne4 Rg6 27.d3 Ne5 28.Rad1 Be6 29.d4 Rg2! 30.Kg2 Qh3 31.Kg1 0–1. Steve20 – bicycle, ChessWorld.net, 2007.

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

3.c3 d5 (--> 1.b4 e5 2.c3 d5 3.e3 e4).

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

3.Bb2 Bb4 4.Nf3 d6 5.Be2 Nc6 6.0-0 0-0 7.c3 Bc5 8.d4 ed4 9.cd4=+ Bb6 10.d5 Nb8 11.Nc3 Bf5 12.Re1 Re8 13.Nh4 Qd7 14.Bf3 Be4 15.Ne4= Ne4 16.Bg4 Qd8 17.Nf5 Nf6 18.e4 Nbd7 19.Re3?? Ne5 20.Rg3 Ng6 21.Ng7? Kg7-+ 22.Qf3 Ne5 23.Bh5 Kf8 24.Qf5 Qe7 25.Rg7?? Kg7 26.Qg5 Kf8 27.Qh6 Kg8 28.Qg5 Kh8 29.Qf5 Nh5 30.Qh5 Qf6 31.Qe2 Qg5 32.Bc1 Qg6 33.Bf4 Rg8 34.g3 Qg4 35.Be5 de5 36.Qb2 f6 37.Qb3 (37…Qe4 38.Rd1-+). gtate (1725) – jerrytong, net–chess.com, 2002.

3.c3 d5 (--> 1.b4 e5 2.c3 d5 3.e3 Nf6).

3.Bc4? Bb4 4.c3 Be7 5.Qb3 d5-+ 6.Qa4 Bd7 7.Bb5 0-0 8.Nf3 Bg4?? 9.Nh4?? c6-+ 10.Bd3 Nfd7?? 11.f3?? Bh4-+ 12.Kf1 Bf3 13.gf3 Nc5 14.Bf5 Na4 15.Rg1 Qf6 16.Ba3 Qf5 17.Bf8 Qf3 0–1. Tiedemann,Marcel – Neffgen,Dieter, remoteschach.de, 2002.

3.Bc4? d5 4.Be2 Bb4 5.Ba3 Ba3 6.Na3 -+.

3.a3 Nf6–/+.

3.Bb2 Qh4 4.g3=+ Qd8 (4...Qe7 5.a3=+) 5.Be5= Bb4?? (5...Nc6 6.Bb2 Nb4 7.a3=+) 6.Nc3 (6.Bg7!? Nf6 7.Bh8 Be6+-) 6...c6?? (6...f6!? 7.Bd4 c5-/+) 7.a3 (7.Bg7 f6 8.Bh8 Kf7 9.Nd5 cd5+-) 7...Bc5?? (better 7...Bc3 8.Bc3 Nf6=) 8.Bg7+- d4 (8...Bg1 9.Rg1 (9.Bh8?! Bc5+-) 9...f6 10.Bh8+-) 9.Ne4 b6 (9...Bb6 10.Bh8 f5 11.Nf2+-) 10.Bh8 Nh6 (10...Be7 11.e3 f5 12.Nf2 de3 13.de3 Qd1 14.Kd1+-) 11.Nh3 (11.Nc5 bc5 12.e4 f5+-) 11...f5 (11...Be7 12.e3 Nf5+-) 12.c3 (better 12.Nc5 bc5 13.Be5+-) 12...fe4 13.fe4 dc3 14.dc3 (14.Bc3 Qe7 15.Bg2 Ba3+-) 14...Nd7 15.Nf4 Nf7 (15...Qe7 16.Bh3+-) 16.Bg7 (16.Ne6!? Qe7 17.Nc7 Kf8 18.Na8 Qe4+-) 16...Qe7 17.Qd3 (better 17.Qb3!? Bd6 18.Qe6 Nc5 19.Qe7 Ke7+-) 17...Nfe5 18.Qb1?? (better 18.Be5 Ne5 19.Qb1+-) 18...Qg7-/+ 19.Rg1?? (better 19.Bh3!?-/+) 19...Nf6 (better 19...Ng4 20.Qb3 Bf2 21.Kd1 Nc5-+) 20.Rg2 Ne4?? (better 20...Nfg4 21.Qb3 Ne3-+) 21.h4?? (better 21.Qe4 Bd7 22.e3+-) 21...Nc3 22.Qe4 (22.Qc2 Bd4 23.Qc1-+) 22...Ne4 23.Nh5 Qg6 (23...Nd3! 24.Kd1 Qa1 25.Kc2 Qc3 26.Kd1 Qd2) 24.Nf4 Qd6 25.Nd3 Bd4 (25...Qd4 26.Rc1 Qe3 27.Rc2 Nf3 28.Kd1 Nc3 29.Rc3 Qd2) 26.Nf4 (26.Ra2 Bg4 27.Nc1 Bc3 28.Rd2 Qd2) 26...Ba1 (26...Bc3) 27.Rf2 (27.Nd3 Qd4 28.Kd1 Qc3 29.e3 Bg4 30.Be2 Qd2) 27...Ng4 (27...Bc3) 28.Rf3 (28.e3 Bc3 29.Ke2 Qd2 30.Kf3 Qf2 31.Ke4 Qe3) 28...Bc3 (28...Qd2) 29.Rc3 Nc3 (29...Qd2) 30.Nd3 Bf5 (30...Qg3 31.Kd2 Ne4 32.Kc1 Qe3 33.Kb2 Qd2 34.Ka1 Nc3 35.Bg2 Qa2) 31.Bg2 (31.Kd2 Ne4 32.Kc1 Qa3 33.Kb1 Ne3 34.Nb2 Nd2 35.Kc1 Qc3) 31...Ne3 (31...Bd3 32.Bc6 Qc6 33.h5 Ne2 34.Kd2 Qc3 35.Kd1 Ne3) 32.Kf2 Ne4 (32...Ncd1 33.Kg1 Qg3 34.Nf4 Qf4 35.Bc6 Ke7 36.Kh1 Qg3 37.Ba8 Nf2) 33.Ke3 Rd8 34.Be4 Be4 (34...Qd4 35.Kf4 Qe4 36.Kg5 Qg4 37.Kf6 Rd6 38.Ke5 Re6) 35.Ke4-+ Qe6 (35...Qg3 36.h5 c5 37.e3 Qg2 38.Ke5 Rd3 39.Kf4 Rd6 40.Ke5 Rd5 41.Kf4 Rg5 42.e4 Qg3) 36.Kf3 Qf6 37.Kg2 Rd5 38.Nf4 Rd1 39.e3 c5 40.h5 c4 41.Nd5 Qe5 (41...Qf1 42.Kh2 Rd2) 42.Nf4-+ c3 43.Ng6 (43.Kf3 c2 44.h6 c1Q 45.e4 Rf1 46.Kg2 Qd2 47.Kh3 Rh1 48.Kg4 Qd1 49.Ne2 Qe2) 43...Qe3 (43...Qe4 44.Kf2 Rd2 45.Ke1 Qb1) 44.Kh3 hg6 (44...Qf3 45.Kh4 Rh1 46.Kg5 Rh5) 45.hg6 (45.Kg4 gh5 46.Kh5 Qg3 47.Kh6 Rh1) 45...Qe6 (45...Qf3 46.Kh4 Rh1 47.Kg5 Rh5) 46.Kg2 (46.Kh4 Rd4 47.Kh5 Rg4 48.g7 Qg6) 46...Qg6 (46...Qe2 47.Kh3 Rh1) 47.a4 (47.Kf3 Qf5 48.Ke3 Rd3 49.Ke2 Qf3 50.Ke1 Rd1) 47...c2 (47...Qe4 48.Kf2 Rd2 49.Kf1 Qb1) 48.Kh3 (48.Kf2 Qf5 49.Ke2 c1Q 50.g4 Qd2) 48...c1Q (48...Rg1 49.g4 Qh7) 49.g4 Rd3 (49...Qe3 50.Kh4 Qgg5) 50.Kh4 (50.Kh2 Qd6 51.Kg2 Qg3) 50…Qgh6 (50...Qgg5) 0-1. Kumah,Daniel - Higueros,Angel, KCF University Cup (7), 2021.

3.e3 Bb4-+ 4.g4 (4.Bb2 Qh4 5.g3 Qe7–/+) 4...c6 5.c3 Be7 6.a4 f6 (6...Bh4 7.Ke2-+) 7.h4 (7.d4 Nh6-+) 7...Nh6 (7...f5 8.g5-+) 8.Na3 Qa5 9.d3 (9.Rb1 0-0-+) 9...Qc3 10.Ke2?? (10.Bd2 Qb2 11.Nc2-+) 10...Qa1 11.g5 (11.Nc2 Qa4 12.Ke1 e4-+) 11...fg5 12.hg5 Nf5 13.Bh3 (13.Nc2 Qa4 14.Kf2-+) 13...Nh4 (better is 13...Ng3 14.Ke1 Nh1-+) 14.Nc2 (14.Bc8 Ba3 (14...Bg5?! 15.Rh4 Bh4 16.Bb7-+) 15.Ba3 Qa3 16.Rh4 Qe7-+) 14...Qa4 15.Bb2 (15.Bc8 a5 16.f4 Ng6-+) 15...Bg5 (15...Bh3 16.Rh3 Ng6 17.f4-+) 16.Be5 (16.Bc8 Na6 17.Bb7-+) 16...Nd7 (16...Bh3!? 17.Nh3 Bf6 18.Bf6 gf6 19.e4-+) 17.Bg7 Rg8 18.Be5 (18.Bc3 Be7-+) 18...Ne5 19.Bc8 (19.f4 Nf5 20.Bf5 Bf5 21.fe5 Qg4 22.Ke1 Qg2 23.Qh5 Bg6-+) 19...Rc8 20.Nh3 Bf6 (20...Nhf3!? 21.Nf2-+) 21.Nf4 Nhf3 22.Rh7 Rb8 (better is 22...Rg1 23.Nh5 Qh4 24.Ng7 Bg7 25.Rh4 Rd1 26.Kd1 Nh4 27.Ne1-+) 23.Rc7 Bh4 (better is 23...Rg1-+) 24.d4 Nc4 25.Qd3 (25.Kf3 Na3 26.Rh7 Be7-+) 25...Bg3 26.Ne1 (26.Qh7 Ng1 27.Kf1 Ne3 28.Kg1 Bh2 29.Kh1 Rg1 30.Kh2 Qc2 31.Kg1 Qh7 32.Rh7-+) 26...Ne1 27.Qd1 Qa2 28.Kf1 Qf2 0–1. Bia,Bianca – Franziska,Franzi, remoteschach.de, 2002.

3.b5 d5 4.e3 c5 5.Bb2 Nh6 6.h3 Nf7 7.Be2 Bd6 8.0-0 0-0 9.Nc3 Be6 10.d3 Nd7 11.a4 b6 12.Ba3 Qe7 13.d4 e4 14.Nh2 cd4 15.Bd6 Qd6 16.Nb1? de3-+ 17.fe3 Qc5 18.Qd2 Rac8 19.Ra2 Nde5 20.g4 Rfd8 21.Qd4 Ng5 22.Qc5 bc5 23.Rb2 d4 24.h4 Ngf7 25.b6 ab6 26.Rb6 Rd6 27.Rd6 Nd6 28.g5? fg5 29.hg5 Ra8 30.Bb5 Nb5 31.ab5 Rb8 32.c4?? Nc4 33.ed4 cd4 34.Rc1 Rb5 0–1. MasterofDisaster – gunni, Caissa.com, 2004.

3.d4 Bb4 4.Bd2 Qe7 5.Bb4 Qb4–/+ 6.c3 Qb2 7.Nbd2 Qc3 8.Rc1 Qa5 9.de5 fe5 10.g3 d6 11.Ng5 h6 (12.Nge4 Be6-+) 0–1. jorlinsky – presort, net–chess.com, 2006.

3.e4 Bb4 4.c3 Bc5 5.d4 ed4 6.Nd4 d6 7.Bb5 Bd7 8.Ne6+= Qc8 9.Ng7 Ke7 10.Bd7+/– Qd7 11.Qb3 b6 12.Nd2 Nh6 13.Qd5 Nc6 14.Nb3 Ng4 15.Nf5 Kd8 16.f4 a5 17.h3 a4 18.Nbd4 Ra5 19.Nc6 (19…Ke8 20.Na5+-; 19.hg4 Bd4 20.Qa5 Na5 21.cd4 Qc6-+) 1–0. pierre – mezav, ChessHere.com, 2006.

3.Bb2 (--> 1.b4 e5 2.Bb2 Qf6 3.Nf3).

3.d4 Bb4 4.Nfd2? ed4-+ 5.c3?? dc3 6.Ne4 c2 7.Qd2 Bd2 (8.Kd2 cb1N 9.Rb1 Qd4 10.Ke1 Qe4-+) 0–1. lsmiley – sonrisante, net–chess.com, 2003.

3.d4 e4 4.Ng5 d5 –/+ (4...Bb4?! 5.c3 Be7 6.Ne4=).

3.d4 h6?? 4.de5+/– Qb6 5.a3 d6 6.Be3 Qc6 7.Nd4 Qd7 8.ed6 Bd6 9.Nc3 Be5 10.f4 Bd4 (better is 10...Bf6!?+/–) 11.Bd4+- f6 12.e3 Qf5 13.g4! Qg4 14.Be2?? (14.Qg4!? Bg4 15.Rg1 h5+-) 14...Qd7? (better is 14...Qh4 15.Kd2 Ne7+/–) 15.Bh5 Kd8 16.Ne4 (16.Rg1 Rh7+-) 16...b6? (better is 16...Nc6+/–) 17.Rg1+- Qf5 (17...Ne7 18.Rg7 Rg8 19.Rg8 Ng8 20.Nf6 Qd6+-) 18.Bf6 1–0. pjc49 – 488, chessworld.net, 2012.

(--> 1.b4 d5 2.g3 e5).

3.a3 (--> 1.b4 e5 2.a3 d5 3.g3).

3.c3 (--> 2.c3 d5 3.g3).

3.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.g3).

3.Nc3 Be7 4.Nf3 f5 5.Bg2 Nf6 6.0-0 Be6 7.Ng5= Bc8 8.d4 e4 9.d5 Bd7 10.f3 c6 11.Ne6 Qb6 12.e3 cd5?? 13.Ng7+/– Kf7 14.Nf5! Bf5 15.Nd5 Nd5 16.Qd5 Be6 17.Qh5 Kf8 18.fe4 Kg8 19.Qe8 Kg7 20.Qe7 (20.Qe7 Kh6 21.Qh4 Kg6 22.Rf6 Kg7 23.Qg5#) 1–0. pierre – eykj, internet, 2009.

3.h4 Na6 4.a3 d5 5.Nc3 d4 6.Ne4 Bf5 7.Nc5? Qd5 8.f3? b6?? 9.Na6+- e4?? 10.Nc7 Kd7 11.Na8 Qa8 12.g4 Be6 13.fe4 Qe4 14.Rh2 Qe5 15.Rf2 Ke7 16.Bg2 Bg4 17.Bh3 Qe4?? 18.d3 Qg6 19.Bg4 Qg4 20.e4 Qg1+/– 21.Rf1 Qg3 22.Rf2 Qg1+- 23.Rf1 Qg3+/– 24.Rf2 Kd8?? 25.Bf4 Qh4 26.Bh2 Nf6 27.e5?? Ng4–/+ 28.Bg1?? Qh3 29.Qf3 Qh4?? 30.0-0-0?? Be7?? 31.Qa8 Kd7 32.Qh8 Bg5? 33.Kb1 Nf2 34.Bf2 Qf2 35.Qg7 Qe2? 36.Qf7 Be7 37.Qd5 Ke8 38.Qg8 Bf8 39.Qe6 Be7 40.Kc1 h5 (40...h5 41.Qc6 Kf7 42.Qd5 Kf8+-). estrella – bigtone, net–chess.com, 2007.

3.Nb1 Nc6 4.f3 d5-+ 5.h4 g6 6.Rh3?? Bh3 7.gh3 Qh4 0–1. tudor – Caissa, Live Game Caissa's Web, 2004.

3.Nb1 Nf6 4.h4 d5 5.a3 Bc5 6.Nc3 d4 7.Nf3?? dc3 8.Ne5 Ng4 9.Ng4 Bg4 10.Ra2 Qf6 11.f3 Be6 12.dc3 Ba2 13.g3 Nc6 14.Qd3 Bb6 15.Rh2 0-0 16.g4 Rad8 17.Qb5 Qc3 18.Bd2 Qd2 0–1. rwelsh – monicker (1955), net–chess.com, 2006.

3.c3 Ba3 4.Ba3 d6 5.g3 c6 (5...Nf6 6.Bg2–/+) 6.d4 Qf6 (6...Na6 7.Bg2 Qa5 8.Bd6 Qc3 9.Kf1 Qd4 10.Qd4 ed4 11.Nf3–/+) 7.de5=+ Qe5 8.Qd2 c5 (8...d5 9.Nf3 Qe6 10.Rd1–/+) 9.Nf3 Qf6 10.Bg2 h6 (10...Ne7 11.Ng5 Nf5 12.g4=) 11.0-0 Qf5 (better 11...Nd7=) 12.Qd6+- Ne7 (12...Nd7!?+-) 13.Nd4 Qg5 14.Nb5 Na6 15.Rfd1 0-0 16.Bc1 Qg6 (16...Qf6 17.Qf6 gf6 18.Bh6+-) 17.Qe7 Qc2 (17...Qb6 18.Nd6 Qd8 19.Qd8 Rd8 20.Bf4+-) 18.Bf4 Be6 (18...Bg4 19.Qb7 Rad8 20.Bd5+- (20.Qa6?? Rd1 21.Bf1 Ra1-+)) 19.Bb7 Rae8 20.Qd6 Nb8 21.Nc7 (better 21.Rd2 Qa4 22.Nc7+-) 21...Re7 (21...Qc3 22.Ne8 Re8 23.Rac1+-) 22.Be4 (better 22.Qe7 Bf5 23.Bd6 Nd7+-) 22...Qe2 (22...Qe4 23.Qe7 Nc6 24.Qc5+-) 23.Ne6 (better 23.Re1 Rd7 24.Re2 Rd6 25.Bd6+-) 23...Re6 24.Re1 (24.Bh7 Kh7 25.Qf8 Nc6 26.Qf7 Rf6+-) 24...Qg4 (24...Rd6 25.Re2 (25.Bd6?! Qc4+-) 25...Re6 26.Rb1+-) 25.Qc5 (25.Bh7 Kh7 26.Qf8 Nc6+-) 25...Nd7 26.Qc4 (better 26.Qa7!? Nf6 27.Bg2 Rd8+-) 26...Rfe8 27.Re3 Nb6 (27...g5 28.f3 Qh5 29.Bc7+-) 28.Bf3 (28.Qd3 Qh5+-) 28...Qf5 (28...Re3 A) 29.fe3?! Qf3 (29...Nc4?? 30.Bg4 g5 31.Bc7+-) 30.Qc7 Qa8=; B) 29.Bg4 Rg3 30.hg3 Nc4 31.Rb1+-) 29.g4 (29.Qd3 Qd3 30.Rd3 a6+-) 29...Nc4 (29...Qf6 30.Qd4 Re3 A) 31.Be3?! Qf3 32.Qd1 Qh3= (worse 32...Re3 33.fe3 Qe3 34.Kg2+-); B) 31.fe3+-) 30.gf5 Ne3 31.fe6 (31.fe3?! Re3 32.Be3 Re3+-; 31.Be3?! Re3 32.fe3 Re3+-) 31...Nc2 (31...Nf5 32.ef7 Kf7 33.c4+-) 32.Rf1 (better 32.ef7!? Kf7 33.Rc1 Ne1 34.Bd5 Kg6+-) 32...Re6 33.Bd1 (33.Bd5 Re7+-) 33...Na3 34.Be3 (34.Bb3 Rg6 35.Kh1 Nb5+-) 34...Nb1 (34...Rc6 35.Bb3+-) 35.Bf3 (better 35.Bb3!? Rg6 36.Kh1 Nc3+-) 35...Nc3 36.Kh1 (36.Rc1 Na2 37.Rc8 Kh7+-) 36...Na2 37.Bd5 Rd6 (37...Ra6 38.Rb1 Nc3 39.Rb8 Kh7 40.Bf7 Rd6+-) 38.Ba2 a5 (38...Rd7 39.Ra1+-) 39.Ra1 Rd7 40.Bb6 (40.Bc4 g5+-) 40...a4 41.Be3 Kh7 (41...Rd8 42.Bc4+-) 42.Kg2 f5 (42...f6 43.Bb1 g6 44.Ra4+-) 43.Bc4 (43.Be6 Rc7+-) 43...Kg6 44.Ra4 Rb7 (44...Rd6 45.h4 Rf6 46.Ra7+-) 45.Bg8 Rb8 (45...Kh5+-) 46.Ra6 Kh5 (46...Rb6 47.Rb6 Kh5 48.Bf7 Kh4 49.Rb4 f4 50.Rf4 Kg5 51.h4) 47.Bf7 g6 (47...Kg4 48.Ra4 Rb4 49.Rb4 f4 50.Rf4 Kg5 51.h4) 48.Kh3 Rb4 (48...Rg8 49.Ra4 Re8 50.Rh4) 49.Bg6 1–0. Panza (2685) – valla, ChessWorld.net, 2016.

3.Nc4 b6 4.Rb1 Bc5 5.Ne5 d6 6.Nd3 Be6 7.Nc5 dc5 8.e3 (8.a3!?=) 8...Ba2+= 9.Ra1 Bd5 10.Bb2 Nf6 11.f4 0-0 12.Nf3 Re8 13.c4 Bc6 14.Ne5 (14.Be2 a5+=) 14...Nfd7 (14...Ne4 15.Nf3–/+) 15.Qg4 (15.Nc6 Nc6 16.Be2 Nb4+=) 15...Ne5–/+ 16.fe5 g6 (16...Nd7 17.e6 Nf6 18.ef7 Kf7 19.Qh3–/+) 17.h4 (17.Be2!?=) 17...Nd7–/+ 18.h5 (18.Qg3 a5+=) 18...Ne5 19.Qf4? (better is 19.Qg3 Qd6 20.hg6 fg6 21.Qh4-+) 19...Bg2!-+ 20.hg6 (20.Bg2 Nd3 Double attack) 20...Ng6 (20...fg6 21.Rh7 Nf3 22.Kf2 Kh7 23.Qf7 Kh6 24.Bg7 Kh5 25.Bg2 Qd2 26.Kg3 Qg2 27.Kg2 Re3 28.Qd5 g5 29.Qa8 Kg6+-) 21.Qh6+- Ne5 22.Be5 Re5 23.Qh7 Kf8 24.Qh8 Ke7 25.Qe5 Kd7 26.Bg2 Rb8 (26...a6 27.Ra3 Qh4 28.Rh4 Rg8 29.Bh3 Rg4 30.Bg4 f5 31.Bf5 Kc6 32.Qd5) 27.Bh3 (27.Rh6 Qh4 28.Rh4 b5 29.Bh3 Kc6 30.Qf6 Kb7 31.Qa6 Ka8 32.Qa7#) 27...Kc6+- 28.Qd5! (28.Qd5 Qd5 29.cd5 Kd5 30.Bg2 Kd6 31.Rh6 Ke5 32.Ra7+-) 1–0. Guk,Vl – Bunkartas, Kaunas, 1986.

3.Nc4 d6 4.Bb2 (4.e3 b5 5.c3 Bc5–/+) 4...Be6 5.e4 (5.e3 Nf6–/+) 5...Nf6 6.Qf3 Nc6 7.Ne3 Bc5 8.Bb5 Qd7 9.Nd5 Nd5?? (better is 9...Ng4 10.Nh3 a6-+) 10.ed5+/– Bg4 (10...Bd5!? 11.Qd5 a6+/–) 11.dc6+- bc6 12.Qc6 Rc8? (12...Rb8 13.a4 Qc6 14.Bc6 Ke7 15.Bc3+/–) 13.f4! Rg8? (13...ef4 14.Qd7 Double attack (14.Bg7 Pinning; 14.Bg7 Deflection; 14.Qe4 Decoy)) 14.fe5 Qc6 (14...Rb8 15.c4 Qc6 16.Bc6 Bd7 17.Bd7 Kd7 18.0-0-0+-) 15.Bc6 Kd8 16.d4 Bb6 (16...Rb8 17.Bc3 Bb4 18.Ne2+-) 17.Nf3 Bd7 18.Bd5 Ke7 19.Ng5 h6 (19...Be6 20.Be6 fe6 21.Nh7+-) 20.Nf7 Rgf8 (20...Be6 21.Be6 Ba5 22.c3 Ke6 23.0-0+-) 21.ed6 (21.0-0 Bg4 22.Rae1 Kd7+-) 21...cd6 22.0-0 Rc2 (22...Bg4 23.Rae1 Kd7+-) 23.Rae1 Be6 24.Be6 Rb2 25.Bg4 1–0. Guk,Vl – Guk,Vi, Kaunas, 1986.

3.Nc4 e4!? –/+.

3.Nc4 Qf6 4.Ba3 (4.Nf3 Nc6–/+) 4...Nc6 5.Rb1 d5 6.Bb4 dc4 7.e3 Be6 8.c3 (8.Bc3!? 0-0-0 9.f4+=) 8...0-0-0 9.Qa4 a6 10.Nf3 e4 11.Nd4 Nd4 (11...Ne5 12.Bc5 Bd5 13.h3–/+) 12.cd4+= Ne7 (12...Qg6 13.Bc5+=) 13.Be2 (13.Be7 Qe7 14.Bc4 Bc4 15.Qc4 Qe6=) 13...Qg5 (13...Nf5+=) 14.0-0 (better is 14.Be7 Qe7 15.Bc4 Bc4 16.Qc4+=) 14...Bh3–/+ 15.Be7?? (better is 15.g3 Bf1 16.Be7 Qe7 17.Bg4 Kb8 18.Qa6-+) 15...Qg2 0–1. MJ321 – ReXtoN, playchess.de, 2005.

3.a5 a6 4.c3 Be7 5.c4 d5 6.cd5 Qd5 7.Qa4 c6 (7...Nc6!?–/+) 8.Nc3 Qd8 9.Qe4 Nd7 10.Ba3 (10.Nf3 Ngf6 11.Qe3 Nc5 12.Ne5 Nb3–/+) 10...Ba3 (Better is 10...Qa5!? 11.Bb2 Qb6-+) 11.Ra3–/+ Ngf6 12.Qc2 0-0 13.h4 Nc5 14.h5 h6 15.Qf5?? Bf5-+ 16.Ra4 Na4 17.Na4 Qd4 18.e3 Qa4 19.d3 Qa5 20.Kd1 Qa1 21.Ke2 Qb2 22.Kd1 Qb1 23.Kd2 Qf1 24.e4 Qf2 25.Kd1 Bg4 26.Kc1-+ Qg2 27.Rh4 Qg1 28.Kc2 Qf2 29.Kc3 Qh4 30.d4 Qg3 31.Kc4 ed4 32.Kd4 Bh5 33.e5 Qf4 34.Kd3 Qe5 35.Kd2 Rfd8 36.Kc2 Rd4 37.Kc3 Rad8 38.Kc2 Qc5 39.Kb3 Rb4 40.Ka3 Qa5 0–1. Bry – annmarie, Live Game Caissa's Web, 2004.

3.a5 Nc6!? –/+.

3.Bb2 Nc6 4.e3 Nf6 5.Nf3 d6 6.Rg1 (6.Bb5 0-0-/+) 6...0-0-+ 7.h3 Qe7 8.g4 e4 9.Nh4 Nd5 (9...Ne5 10.Bg2-+) 10.g5 (10.Nf5 Bf5 11.gf5 Ne5-+) 10...g6 (10...Ne5 11.Qh5-+) 11.Bc4 Nb6 12.Bb3 a5 (12...Na5 13.Rg3-+) 13.Nc3 Be6 (better 13...Bh3 14.Nd5 Nd5 15.Bd5 Ne5-/+) 14.Ne4= Bb3?? Attacking the isolated pawn on a4 (better 14...Nd7=) 15.Nf6 (15.Nf5 gf5 16.Nf6 Qf6 17.gf6 Kh8+-) 15...Qf6 16.gf6 Be6?? (16...Na4 17.Bc1 Bc2 18.Qc2 Nc5+-) 17.Qh5 Nd7 (17...Bd2 18.Kd1 Be3 19.fe3 Ne7 20.Qh6 Bg4 21.hg4 Nf5 22.Nf5 gf5 23.Qg7) 18.Qh6 Nf6 19.Bf6 (19.Bf6 Bd2 20.Kd2 Bh3 21.Qg7) 1-0. FeegLood (2165) - GonzoSama (2080), lichess.org, 2015.

3.Bb2 d6 –/+.

3.c3 Bc5 4.Na3 d5 5.Qb3 Nf6-+ 6.Bb2 0-0 7.0-0-0?? Be6 8.Nb5?? d4 9.cd4?? Bb3 10.Re1 a6 11.e3 Bb4 12.Bc4 Bc4 13.Kb1 ab5 14.Rc1 Ne4 15.Rc4 Nd2 16.Kc2 Nc4 17.Bc3 Na3 18.Kb3 Be7 19.ab5 Qd5 20.Kb2 f6 21.de5 Qb5 22.Ka2 Qb1 0–1. idontknow – cacook (1620), net–chess.com, 2006.

3.Nc3 Nf6 4.Nb5 a6 5.Na3 0-0 6.c3 Bc5 (7.d4 ed4 8.cd4 Be7-+) 0–1. Kunze,Benjamin (1800) – Pirs,Primoz, remoteschach.de, 2005.

3.h4 Bc5 4.g3 d6 5.d4 ed4 6.c3 dc3 7.f4 Bg4 8.e4?? Bd1 9.g4 Bf3! 10.Nf3 c2 11.Nc3 Nc6 12.Nd5 Qd7 13.Nc7 Qc7 14.f5 Nd4 15.Bb5 Nb5 16.ab5 Nf6 17.Rh3 Ne4 18.Ng5 Ng5 19.Re3 Be3 20.Be3 Nf3 21.Ke2 Nh4 22.Rc1 0-0 23.b6 ab6 24.g5 Rfe8 25.Rc2 Qc2 26.Kf1 Ra1 27.Bc1 Rc1 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.e4 Nf6 5.d3 d5 6.Na3 de4 7.d4 ed4 8.cd4 Bb4 9.Bd2 Qd4 10.Nc2 Bd2 11.Ke2 Qd3# 0–1. Krahl,Wolfgang – Sheers,Matthew Philip, internet, 1998.

4.g4 d5 5.h3 Nc6 6.Nf3 h5 7.gh5 e4 8.Ng1 Rh5 9.f4?? (9.d4-+) 9...Bh4 0–1. LUSCIOUS – Caissa, Live Game Caissa's Web, 2004.

4.h4 Bh4 5.g3 (5.Qc2 h6-+) 5...Bf6 6.c4 Ne7 7.Nc3 d5 8.cd5 Nd5 9.Qc2 Nc3 10.Rh7 Rh7 11.Qh7 Be6 (better 11...Na4!? 12.Ra4 Nd7-+) 12.dc3-/+ Nc6 (better 12...Nd7!?-/+) 13.Bh3 Bh3 (better 13...Kd7=+) 14.Nh3 (14.Qh8 Kd7 15.Qh3 Ke8 16.Qh8 Kd7 17.Qh3 Ke8 18.Qh8 Kd7 19.Qh3=) 14...Qd5?? (better 14...Qd6!? 15.Qg8 Qf8 16.Qf8 Kf8-/+) 15.Qg8= Kd7 16.Qa8 Qh1 17.Kd2 Qh3 (better 17...Na5!? 18.Kc2 Qe4 19.Kd1 Qd5 20.Kc2 Qb3 21.Kd3 Qd1 22.Ke3 Nc4 23.Kf3 Qh1 24.Kg4 Qe4 25.Bf4 Qe2 26.f3 ef4 27.Nf4 Ne5 28.Kh3 Qf3-/+) 18.Qb7+/- Qg2 (18...Be7 19.Qb5 Qh6 20.Kc2+/-) 19.Qb5+- Qf2?? (better 19...Be7 20.f3 Bd6+-) 20.Qd5 Kc8 21.Qc6 Bg5 22.Kd3 Qf5 23.Kc4 Be7 (23...Bd8 24.Ra2 Qf6 25.Qa8 Kd7 26.Rd2 Ke8 27.Ba3 Qa6 28.Kb3 Qb6 29.Kc2+-) 24.Be3 1-0. fsfsdfkfkk (2185) - znosko_borowski (2265), Rated Blitz game, lichess.org, 2015. (=1.a4 A00: Irregular Openings 1...e5 2.b4)

4.Na3 d5 5.Bb2 e4 6.Qb3 Nf6 7.0-0-0 Be6 8.d3? Nc6 9.de4? Bd6?? 10.e3? de4 11.Qc2 Qd7 12.Qb3?? Bb3 13.Rd2 0-0-0 14.Nb5 Nd5 15.Na7 Na7 16.Rd5 Bd5 17.f3 ef3 18.gf3 Ba2 19.Bc4 Bc4 20.Ne2-+ Be2 21.Ba3 Bf3 22.Rf1 Bg2 23.Rf2 Ba3 24.Kc2 Be4 25.Kb3-+ Bc1 26.Rf4 Qd5 27.c4 Qd3 28.Kb4 Qa3 29.Ka5 Bc6 30.c5 f6 31.e4 Ba4 32.e5 Bf4 33.c6 Rd5 (33...Nc6) 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Na3 Nf6 5.Qb3 d6 6.Bb2 Be7 7.0-0-0? Bd7 8.e3 0-0 9.Bc4? Nc6 10.Nf3 Ne4 11.Rhe1? Nf2 12.Qb5 Nd1 13.Rd1 Nb8 14.Qb3 Be6! 15.Be6 d5?? 16.Ng5?? h6 17.Bf7?? Kh8?? 18.Qc2?? hg5 19.Rf1 e4 20.Qb3 c6 21.Qd1? Rf7?? 22.Qh5= Kg8 23.Qf7 Kh7 24.Qh5 Kg8+= 25.c4 Nd7?? 26.g4 Qe8 27.Qh3? Bf6 28.Qg3 Bb2 29.Kb2 dc4 30.Nc4 Nc5 31.Qd6 Na4 32.Kb3 Nb6?? 33.Na5?? Rd8 34.Qb4 Rd3 35.Kb2 Nd5 36.Qb7 Rd2 37.Kb1 Ne3 38.Qa7 Ng4 39.Kc1 Ra2 40.Kb1 Rh2 41.Nb3 Kh7 42.Qg1 Rh3 43.Qg4 Rb3 44.Kc2 Qb8 45.Qh5 Kg8 46.Qg5 Rb2 47.Kd1 Rb1 48.Ke2 Rf1 49.Kf1 Qf8 50.Ke2 Qf6 51.Qg2 Qb2 52.Kf1 Qg2 53.Kg2 c5 54.Kf2 g5 55.Ke3 g4 56.Ke4 g3 57.Kf3 c4 58.Kg3 c3 59.Kf3 c2 60.Ke2 c1Q 61.Kf2 Kg7 62.Ke2 Kf6 63.Kd3 Ke5 64.Ke2 Ke4 65.Kf2 Qe3 66.Kg2 Qf3 67.Kh2 Kf4 68.Kg1 Kg3 (68...Qe2 69.Kh1 Kf3 70.Kg1 Qg2) ½–½. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Qb3 d6 5.Ba3 Nf6 6.c4 Be6 7.Nc3 Nc6 8.0-0-0?? Nd4 9.Nb5?? Nb3 10.Kc2 Bc4 11.d3 Bb5 12.Kb3 Ba6 13.Rc1 b5 14.ab5 Bb5 15.Rc5 dc5 16.Bc5 Bc5 17.d4 Bd4 18.e3 Bf1 19.Nf3 Bg2 20.Rd1 Bf3 21.h4 Bd1 22.Kb4 Qb8 23.Kc4 Qb3 (23...Be2) 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Qb3 d6 5.Na3 Nf6 6.Bb2 Bd7 7.0-0-0? c5 8.Qc4? d5 9.Qb5 Bb5 10.d4 Ba6 11.de5 Ne4 12.f3 Nf2 13.Rd5 Qd5 14.e4 Qd1 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Ba3 Ba1 5.Qa1 d6 6.c4 Be6 7.Qe5 de5 8.f4 Bc4 9.Nf3 e4 10.d3 ed3 11.ed3 Bd3 12.Bd3 Qd3 13.Ne5 Qa3 14.g4 Qa1 15.Ke2 Qh1 16.h4 Qh4 17.f5 Nc6 18.Nf3 Qg4 19.Ke3 Qf5 20.Nh4 Qg5 21.Kf3 Qh4 22.Ke3 0-0-0 23.a5 Re8 24.Kd3 Rd8 25.Ke3-+ Na5 26.Kf3 Re8 27.Kg2 Re2 28.Kf3 Qf2 29.Kg4 Re3 30.Kh5 Nf6 31.Kg5 Qg2 32.Kh4 Rh3 (32...g5) 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Bb2 Bb2 5.Rc1 Bc1 6.Qc1 d5 7.Qa3 b6 8.Qb3 Be6 9.Qb5 c6 10.Qc6 Nc6 11.a5 ba5 12.c4 dc4 13.Nf3 Qb6 14.Ne5 Qb1 0–1. idontknow – ajeffries (1740), net–chess.com, 2006.

4.Ba3 Ba3 5.Ra3 -+.

4.Qb3 a5 5.Qb4?? (better is 5.Qg3 Nc6 6.Qg7-+) 5...ab4-+ 6.d4 (6.e3 0-0-+) 6...ed4 7.Ba3 (7.Nf3 Nc6 8.Bb2-+) 7...ba3 8.Ra3 Qe7 9.e4 Qe4 10.Be2 Qb1 11.Kd2 Ne4 0–1. ceciraquel – glovio (1630), gameknot.com, 2013. (=1.a4 e5 2.b4? Bb4–/+)

4.Qb3 Nc6 -+.

4.g4 Ng4 5.Nh3 d5 6.cd5 (6.Qb3 Nc6 7.e3 Nf6-+) 6...Qd5 7.f4 (7.Rg1-+) 7...Ne3 8.Qb3 Qb3 9.fe5 Nc2 10.Kf2 Bh3 11.Bh3 Qh3 12.Nc3 Bc3 13.Ra3 Qh4 14.Kf3 Nd4 15.Ke3 Qh3 16.Ke4 Na6 17.Rc3 (17.dc3 Qf5 18.Kd4 0-0-0 19.Ke3 Rhe8 20.Rd1 Re5) 17...Qg4 18.Kd5 (18.Ke3 Qe2 19.Kf4 g5 20.Kg5 Rg8 21.Kh6 Rg6 22.Kh7 Qh5) 18...Ne2 19.Rd1 (19.Rc7 Qd4) 19...0-0-0# 0–1. ceciraquel – glovio, gameknot.com, 2013. (=1.a4 e5 2.b4? Bb4–/+)

3.a4 ab5 4.Bb2 Ra4 5.Be5 Nc6 6.Bb2 Ra1 7.Ba1 b4 8.c3 (8.Nf3 d5 9.e3 Nf6-/+) 8...Nf6 9.e3 d5 10.Bb5 Bd7 11.cb4 (11.Nf3 Qa8 12.Bb2 Qa2-/+) 11...Bb4 (11...Nb4 12.Bf6 Qf6 13.Bd7 Kd7 14.Nf3-+) 12.Qa4 Bd6 13.Bf6 Qf6 (worse 13...gf6 14.Nc3 d4 15.ed4=+) 14.Nc3 (14.Qa8 Nd8 15.Bd7 Kd7-/+) 14...Qe6?? (better 14...0-0-+) 15.Bc6+= (15.Bc6 Bc6 16.Qa8 Kd7 17.Qh8+=) 1-0. wgr069 (2305) - ChessClashRoyale (2200), Casual Blitz game, lichess.org, 2021.

3.ba6 ba6 4.Bb2 (4.e4 Nf6=+) 4...d6 (4...Nc6 5.Nf3 e4 6.Nd4=+) 5.g3 (5.d4 ed4 6.Qd4 Nc6=) 5...Bb7 (5...Nc6 6.Nc3=+) 6.f3 (6.Nf3 Nd7=+) 6...e4 (6...Nf6!?–/+) 7.Bg2 d5 (7...Nf6 8.c4=) 8.e3 (8.c4 ef3 9.Nf3 dc4 10.Qa4 Nd7 11.Qc4 Nb6=) 8...Nf6 (8...Nd7 9.Ne2=+) 9.Nc3 (9.fe4 de4 10.Bf6 Qf6= (< 10...gf6 11.Nc3+=)) 9...ef3 (9...Nbd7!?=+) 10.Nf3= Ne4 11.d3 Nf6 12.0-0 Be7 13.Ne5 0-0 14.Na4 (14.Ne2 Nbd7+=) 14...Nc6 (14...Qe8 15.c4 Bd6 16.Ng4 Ng4 17.Qg4 Qe3 18.Kh1+=) 15.c4 (15.Ng4 Ng4 16.Qg4 Bg5+=) 15...Ne5 (15...Qd6 16.Ng4 Ng4 17.Qg4+=) 16.Be5+= c6 (16...Nd7!? 17.d4 Ne5 18.de5 c6 19.cd5 cd5+=) 17.Rb1+/– Rb8?? (better is 17...Bc8 18.Nb6 Nd7 19.Na8 Ne5+/–) 18.Bb8+- Qa5 (18...Qb8 19.Qb3 Qe5 20.Qb7 Ng4+-) 19.Rb7 Ba3 (19...Qd8 20.Be5 a5+-) 20.Bc7 Qc5 21.Nc5 Bc5 22.d4 Ba3 23.Qb3 Be7 24.Rb8 (24...g6 25.cd5 Rb8 26.Qb8 Kg7 27.d6+-; 24.cd5 cd5 25.Be5 h6+-) 1–0. MasterofDisaster – igraa, Live Game Caissa's Web, 2005.

3.ba6 Ra6 4.e3 Rf6 5.Bb2 d6 (5...Re6 6.Nf3 e4 7.Nd4=) 6.Nf3 e4 (better is 6...Bg4!?=) 7.Bf6+/– gf6 (7...Nf6!? 8.Nd4 d5+/–) 8.Nd4 c5 (8...f5 9.Nc3+-) 9.Nb3 Nh6 (9...f5 10.d4+-) 10.h3 (10.d3 f5+-) 10...Nf5 (10...f5 11.d4+-) 11.a4 (11.d3 ed3 12.Bd3 d5+-) 11...Nc6 12.a5 Nb4 (12...d5 13.Bb5 Nh4 14.a6+-) 13.a6 (better is 13.d3!? Qe7+-) 13...ba6 14.Ba6?? (better is 14.c3 Nd3 15.Bd3 ed3 16.Nc1+-) 14...Ba6-+ 15.c3?? (better is 15.Ra6 Na6 16.Qg4-+) 15...Nd3 16.Kf1 Nb2 17.Kg1 (17.Ra6 Nd1 18.d3 d5-+) 17...Nd1 18.Ra6 Be7 (better is 18...Qb8!? 19.Na5 Qb1 20.Ra8 Kd7 21.Kh2-+) 19.Kh2 (19.d3 d5 20.de4 de4-+) 19...d5 (better is 19...Nf2!? 20.Rf1 Nd3 21.Nc1 Nc1 22.Rc1-+) 20.Rd1 Bd6 (20...Qb8!? 21.Kh1 Qb3 22.Ra8 Bd8 23.Re1-+) 21.g3 (21.Kg1 Qb8 22.Na1 0-0-+) 21...h5 (21...Qb8!? 22.Nc5 Bg3 23.Kg2 Bf2 24.Ra8 Qa8 25.Kf2-+) 22.d4 (22.Kg1 Qb8 23.Na3 Bg3-+) 22...h4 23.dc5 (23.Kg1 hg3 24.N1d2 gf2 25.Kf2 Bg3 26.Kg1 c4-+) 23...hg3 24.Kg2 Nh4 25.Kf1 g2 (better is 25...Qc8 26.Ra2 g2 27.Ke2-+) 26.Kg1 (26.Ke2 Bh2 27.Nd4 Nf3 28.Nf3 ef3 29.Kf3 Qc8-+) 26...f5 27.Rd6 (27.f4 Nf3 28.Kg2 Rg8 29.Kf1 Nh2 30.Ke1 Rg2 31.Rd5 Ng4-+) 27...Qg5 28.Nd4 Nf3 29.Nf3 ef3 30.Kh2 Qh4 31.Rd8 Kd8 32.Rd5 Ke7 33.Kg1 Qh3 34.Re5 Kf6 35.Rf5 Kf5 36.e4 Ke4 37.Nd2 Kd3 38.Nf3 Qh1 0–1. MasterofDisaster – Apracs, Live Game Caissa's Web, 2004.

3.ba6 b6.

3.Bb2 d5 4.ba6+= Na6 5.Be5 f6 6.Bb2 Bc5 7.e3 Ne7 8.Nf3 Bf5 9.Nd4 Bg6? (better 9...Bd4!? 10.Bd4 Nb4+=) 10.Ne6+/- Qd7 11.Ng7 Kf7 12.Nh5 Bh5 (12...Nb4 13.Nf6 Qc6 14.Ng4+-) 13.Qh5 Ng6 14.a3 Kg7 15.Be2 Rhe8 16.0-0 Qb5?? (16...Bd6+-) 17.Bb5 (17.Bb5 c6 18.Ba6 ba6 19.Qf5+-) 1-0. DEFFM – attrage, freechess.org, 2021.

3.Bb2 Qg5 4.Nf3 Qd8 5.a4 (5.ba6!? Na6 6.Be5+=) 5...ab5 6.ab5 Ra1 7.Ba1 c6 (better 7...e4!? 8.Nd4 Nf6=) 8.Be5+/- d6 9.Bb2 cb5 10.e3 Nf6 (10...b4 11.Bb5 Bd7 12.Qe2+/-) 11.Bb5+- Bd7 12.Bf6 Qf6 13.Bd7 Nd7 14.Nc3 g6 (14...Qg6 15.0-0+-) 15.Nd5 Qd8 16.Qa1 f6 17.Ng5!! Ne5?! (17...fg5 18.Qh8 Pinning (18.Qh8 Deflection)) 18.Qa4 (better 18.Ne6!? Qc8 19.f4 Nd7 20.Nf6 Nf6 21.Qf6 Rg8 22.Nc7 Qc7 23.Qe6 Qe7 24.Qg8 Qh4 25.Ke2 Qh5 26.Kf2 Qh4 27.Kf3 Qe7+-) 18...Nc6 19.Qe4 Ne7 (19...Ne5 20.f4 fg5 21.fe5 Be7+-) 20.Nf6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.c4 c6 4.Bb2 ab5 5.cb5 d6 6.e3 Nf6 7.Qc2 g6 (7...Be6 8.Nc3=+) 8.bc6 bc6 9.Nf3 Bg7 10.Be2 Bf5 11.d3 0-0 12.e4 Bg4 13.h3 Bf3 14.Bf3 d5 (14...Na6 15.a3= (15.Qc6? Nc5-+)) 15.0-0 (15.Be5 Re8 16.Bc3 Qe7+/-) 15...de4 (15...Qd6 16.Rc1=) 16.de4+= Nfd7 17.Rd1 Qg5 18.Nd2 f5 (18...Rd8!?+=) 19.ef5+/- Rf5 (better 19...Qf5!? 20.Ne4 Ra7+/-) 20.Bg4+- Rf4 21.Ne4 Nf6?? (better 21...Qe7+-) 22.Be6 Kh8 23.Rd8 (23.Rd8 Bf8 24.Ng5+-) 1-0. DEFFM – GuestTMTT, freechess.org, 2021.

3.c4 d5 4.Bb2 dc4 5.Qa4 c6 6.Qc4 ab5 7.Qc2 Nd7 8.Nf3 Ngf6 (8...Qe7 9.d3–/+) 9.Ne5+= Ne5 10.Be5 Be6 11.e3 Bd6 12.Bd6 Qd6 13.d4 0-0 14.Be2 Ra5 15.0-0 Rfa8 16.Qb2 b4 17.Nd2 Ra2 18.Nc4 Bc4 19.Bc4 Rb2 20.Ra8 Qf8! 21.Rf8 Kf8 22.f3 (22.Ra1 b5 23.Bd3 Rd2-+) 22...Rc2-+ 23.Bd3 Rd2 24.Bb1 Nd5 25.Rf2 Rd1 26.Rf1 Ne3 27.Rd1 Nd1 28.Bc2 Ne3 29.Bd3 (29.Bb3 Nf5 30.d5 Nd4-+) 29...b3 30.Kf2 Nc2 31.Ke2 Na3 32.Ke3 b2 33.d5 c5 34.d6 c4 35.d7 Ke7 36.Bh7 g6 37.h4 b1Q 38.Bg8 c3 39.Kf4 0–1. usingprogram (1985) – bumbara1 (1795), kurnik, 2012.

3.c4 d6 4.a4 (4.Nc3 ab5 5.cb5 d5=+) 4...ab5 (4...Be6 5.d3=+) 5.cb5 Bd7 (5...d5 6.Nf3 e4 7.Nd4–/+) 6.e4 Nf6 7.Qc2 (7.Nc3 c6=+) 7...c6 (7...d5 8.ed5 Nd5 9.Bb2=+) 8.Nc3 (8.Bb2 Qb6=+) 8...d5 9.Bb2 (9.ed5 cd5 10.Nf3 e4=+) 9...de4 (9...d4!? 10.Nd1 cb5 11.Bb5 Nc6=+) 10.Ne4= Bf5 11.Bd3 Nbd7?? (11...Nd5 12.Nf6 (12.Be5?? Nb4-+) 12...Qf6 13.Bf5=) 12.Nf3 (12.Nf6 Qf6 13.Bf5 g6 14.bc6 bc6 15.Bd7 Kd7+-) 12...Nc5?? (better is 12...Nd5=) 13.Ne5 Nce4?? 14.Nc6?? bc6-+ 15.Qc6? Bd7 16.Qc2 Qe7 17.Bf6 Nf6 18.Kf1 Qd6 19.Re1 Be7 20.Qc4 0-0 21.h4 Rfc8 22.h5 Rc4 (23.Bc4 Qd4 24.Re7 Ra4-+) 0–1. riverborne – TheBlackKnight, Live Game Caissa's Web, 2006.

3.e3 Bd6 4.Nf3 h6 (4...e4 5.Nd4=+) 5.Bb2 Qe7 6.a4 b6 (6...e4 7.Nd4 Be5 8.Nc3=) 7.Nc3 (7.Na3 Nf6+=) 7...Nf6= 8.Bc4 c6 (8...Bb7 9.0-0=) 9.Nh4 (9.0-0+=) 9...Nh7 (better 9...Bb4!?=) 10.Nf5+/- Qf8 11.Ne4 g6?? (11...Bc7 12.a5! d6 13.ab6 Bf5 14.bc7 Nd7 15.Ra6 Rc8+-) 12.Ned6 Kd8 13.Nf7 Kc7 (13...Qf7 14.Bf7 gf5 15.Qh5+-) 14.Be5 d6 15.Bd6 Kb7 16.Bf8 Rf8 17.N5d6 Ka7 18.Nc8 Rc8 19.Qg4 Rc7 20.Qf4 Kb7 21.Nd6 Ka7 22.bc6 Rc6 (22...a5 23.Nb5 Ka6 24.Nc3 b5 25.ab5 Ka7 26.Qc7) 23.Qf7 (23.Qf7 Nd7 24.Qd7 Rc7 25.Qc7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.e3 Nf6 4.Nf3 d6 5.Bb2 Qe7 6.c4 (6.d4 e4 7.Nfd2 Be6=+) 6...c6 (6...ab5 7.cb5 Be6 8.Nc3=+) 7.Qc2 g6 (7...e4 8.Bf6 gf6 9.Nd4=+) 8.e4 ab5 9.cb5 Bh6 10.d4 0-0 11.de5 de5 12.Bc4 (12.Be5 Bg4 13.Bf6 Qf6=) 12...Nbd7 (12...cb5 13.Bd3 Nc6 14.Bb5=+) 13.0-0 Qc5 14.Rd1 (better is 14.bc6 Qc6 15.Nbd2+=) 14...Nb6?? (better is 14...cb5 15.Bb3 Qc2 16.Bc2 Re8=) 15.Ba3 (better is 15.Bf7 Rf7 16.Qc5+-) 15...Qc4-+ (15...Ra3?? 16.Bf7 Rf7 17.Qc5 Rf3 18.gf3+-) 16.Qc4 Nc4 17.Bf8 Kf8 18.bc6 Ke8 (18...bc6 19.Nc3-+) 19.Nc3 Ra3 (better is 19...bc6 20.a4 Bf4-+) 20.Nb5 bc6 (20...Ra5 21.Nc7 Ke7 22.Nd5 Nd5 23.Rd5 Rd5 24.ed5 Kd6-+) 21.Na3+/– Na3 22.Ne5 c5 23.Rd3 (23.Nc6 Bd7 24.e5 Bc6 25.ef6 Nc2+/–) 23...Nc2 24.Rad1 Nd4 25.Rb1 (25.Nf3!? Ba6 26.Nd4 Bd3 27.Rd3 cd4 28.Rd4+/–) 25...Ne4= 26.Ra3?? (26.Rb8 Nd6=) 26...Nd6 (26...Ne2 27.Kf1 Nd2 28.Ke2 Nb1+-) 27.Ra7=+ Bf4 28.Nd3 Bd2?? (28...N6b5 29.Re1 Ne6+-) 29.Nc5+/– N4b5 30.Ra8 Kd8 31.a4 Ke7?? (better is 31...Nc3 32.Rbb8 Kc7+-) 32.ab5+- (< 32.Rb5 Nb5 33.ab5 Bf5+-) 32...Bf5 33.Ra7 Kf6 34.Rb2 Bc3 35.Nd7 (35.Rb3 Bd4 36.Nd7 Ke7 37.Nb6 Ke6+-) 35...Kg7 (35...Bd7 36.Rb3 Nb5 37.Rd7+-) 36.Rb3 Bd4 37.Rc7 Be6 (37...Ne4 38.Rf3+-) 38.Rb4 Bc3 (38...Ne8 39.Rc5 Bc5 40.Nc5 Nd6 41.Ne6 fe6+-) 39.Rc3 Bd7 40.b6 Bc8 (40...Be6+-) 41.Rd4 Nb5 42.Rc8 Nd4 43.b7 Ne6 44.b8Q h5 45.Qb2 Kh7 (45...f6 46.Qb7 Kh6 47.Rh8 Kg5 48.Qd5 Kg4 49.f3 Kf4 50.Qe4 Kg5 51.h4) 46.Rh8 (46.Qh8) 1–0. Taulien,Christian – Weber,Dirk, remoteschach.de, 2002.

3.e4 Bb4 4.Nf3 d6 5.Bb2 (5.c3 Ba5=) 5...Nf6=+ 6.Bd3 (6.c3 Ba5=+) 6...0-0 7.a3 Bc5 8.0-0 ab5 9.Bb5 Nc6 (9...Ne4 10.d4 ed4 11.Re1–/+) 10.Nc3 Bg4 (10...Nd4–/+) 11.Qe2? (better is 11.Bc6 bc6 12.h3=+) 11...Nd4-+ 12.Qd3 c6 (12...Bf3 13.gf3 Nh5 14.Kh1-+) 13.Nd4 (better is 13.Ba4!?-+) 13...ed4 (13...Bd4?! 14.Bc4–/+; 13...cb5 14.Ndb5 Be6 15.a4+=) 14.Na4 (14.Ne2 Be2 15.Qe2 cb5-+) 14...cb5 15.Nc5 dc5 16.Qb5 (16.e5 Nd5 17.Qb5 Qc7-+) 16...Ne4 17.Qb7 (17.f3 Bd7 18.Qe2-+) 17...Nd2 18.Rfe1 (18.Qc6 Nf1 19.Rf1 Qc8-+) 18...Qa5 (18...Rb8 19.Qc6 Rb2 20.Qc5-+) 19.Re5 (19.Qe7 Qb5-+) 19...Nc4 (better is 19...Rab8 20.Qe7 Rb2 21.Qc5 Qc5 22.Rc5-+) 20.Qe4 (20.Bd4 Qd2 (20...cd4?! 21.Ra5 Ra5 22.Qe4–/+) 21.Bc5 Ne5 22.Bf8 Rf8-+) 20...Nb2 (20...Ne5 21.Qe5 Rfe8 22.Bd4 Re5 23.Be5-+) 21.Rg5 (21.Qg4 Qc3 22.Re2 Ra3 23.Ra3 Qa3-+) 21...f5 (better is 21...Bd1!? 22.h3-+) 22.Qe5 (22.Qb7 Rf7 23.Qb2 Qd2-+) 22...Qc3 (better is 22...Rf7-+) 23.Qg7 1–0. Taulien,Christian – Tippelskirch,Leon, remoteschach.de, 2003.

3.e4 Bc5 4.Nf3 d6 (4...Nf6 5.ba6 (5.Ne5 Bd4 6.c3 Be5 7.d4 Qe7 8.de5 Qe5 9.Qd4 Qe4 10.Qe4 Ne4) 5...Ne4 6.Qe2+= Bf2 7.Kd1 d5 8.Nc3 Na6 9.Ne4 de4 10.Qf2 ef3; 4...ab5 5.Bb5 (5.Nc3 b4 6.Nb5 Nc6 7.Bc4 Nf6 8.Qe2 0-0 9.0-0 d6 10.a3 Nd4) 5...Nc6 (5...Nf6 6.Nc3 0-0 7.0-0 Nc6 8.a4 d6 9.Ba3 Bb6 10.h3 h6) 6.Nc3 Nf6 7.0-0 0-0 8.Rb1 d6 9.d3 Be6 10.Bc6 bc6) 5.Ba3 (5.c3 Qe7+= (5...Nf6 6.d4 Bb6 7.Be3 ed4 8.Bd4 c6 9.Nbd2 ab5 10.a4 Bd4) 6.d4 ed4 7.cd4 Bb4 8.Bd2 Bd2 9.Nbd2 Nf6 10.Bd3 ab5) 5...Ba7 (5...Ba3 6.Na3 Nf6 7.Bd3+= ab5 8.Nb5 Na6 9.0-0 Nc5 10.Qe2 0-0; 5...Bb6 6.Nc3 Nf6 7.ba6 Na6 8.Bc4 Nc5 9.Bc5 Bc5 10.0-0 0-0) 6.Nc3 (6.ba6 Na6 7.Bb5 c6 (7...Bd7 8.Nc3 Nf6 9.Ba6 ba6 10.0-0 0-0) 8.Ba6 ba6+= 9.Nc3 Nf6 10.0-0 0-0) 6...h6 (6...ab5!? 7.Nb5 Nf6+= (7...Bb6 8.Bd3 Nf6 9.0-0 0-0 10.Rb1 Nbd7) 8.Bc4 Bb6 9.Qe2 0-0 10.Bb2 Nh5) 7.ba6= ba6 (7...Na6 8.Bb5 Bd7 9.Rb1 Nf6 10.0-0 0-0) 8.Rb1 (8.Bc4 Nc6 9.0-0 Nf6 10.Qe2 0-0) 8...Ne7 (8...Nf6 9.Bc4 Nc6 10.0-0 0-0) 9.Bc4 0-0 (9...Nbc6 10.0-0 0-0) 10.0-0 Ng6 (10...Nbc6+=) 11.Bd5 (11.Nd5 c6=) 11...c6 12.Bc4 Kh8 (12...Re8 13.d4=) 13.Rb3 f5 14.d3 f4 (14...Nf4 15.Re1=) 15.h3 Nh4 16.Na4 Nf3 17.Qf3 Nd7 (better is 17...Qc7!?+=) 18.Bd6+- Rf6 19.Bb4 Rg6 20.Kh1 c5 21.Bc3+- Nf6? 22.Be5 Bb8 23.Bf6 Qf6 24.Bd5 Ra7 25.Rb8 Qf8 26.Nb6 Kh7 27.Rc8 (27.Rc8 Qe7 28.Bg8 Kh8 29.Bf7 Kh7 30.Bg6 Kg6 31.Rc6 Kh7 32.Nc8+-) 1–0. pierre – shasar, internet, 2010.

3.e4 d6 4.Nf3 Nf6 5.d4 Ne4 6.Bd3 Bf5 7.0-0 ab5 8.Qe2 Bg4?? (better is 8...d5=+) 9.Qe4+- Bf3 10.Qf3 ed4 (10...c6 11.Re1 Qf6 12.Qg3+-) 11.Qb7 (11...Nd7 12.Qb5+-; 11.Bb5?! c6 12.Bc4 d5 13.Re1 Be7+-) 1–0. Trkn – guest2836, ICC, 2004.

3.e4 Qg5 4.Bc4 (better is 4.Nc3!?=) 4...Qg2–/+ 5.Qf3 Qf3 6.Nf3 ab5 7.Bd5 (7.Bb5!? c6 8.Be2–/+) 7...c6 (7...d6 8.d4-+) 8.Bb3 d6 9.Ng5 Nh6 10.Rg1 Nd7 11.Nf7?? Nf7 12.Bf7 Kf7 13.Nc3 Nf6 14.d3 Bg4 15.Bg5 Bf3 16.h4 Bh5 17.Kd2 Ng4 18.Raf1 h6 19.Be3 Nh2 20.Re1 Nf3 21.Ke2 Ne1 22.Ke1 b4 23.Nb1 Ra2 24.Kd2 b3 25.Nc3 Rc2 26.Ke1 Rc3 27.Rg3 Rd3 28.f3 b2 (29.Kf2 b1Q-+) 0–1. manofsteel2 – nitehawk7, Live Game Caissa's Web, 2005.

4.Bb2 d6 5.Nc3 c5 6.e4 Be6 7.Bb5 Ke7 8.Nf3 Nf6 9.Ng5 d5 10.ed5 Nd5 11.Ne6 fe6 12.Ne4 Qc7 13.0-0 Nf6 14.Re1 Qb6 15.a4 Nd7 16.Bd7 Qb2 17.Rb1 Qd4 18.Rb7 Rb8 19.Qh5 g6 20.Qg5 Kf7 21.Qf6 Kg8 22.Be6 1–0. GLChess211 – Mustang13, computer chess game, 2001.

4.Bb2 d6 5.e3 Be7 6.g3 (6.d4 e4=+) 6...Bf6 7.Bg2 Rb8 (7...Nh6 8.Ne2=+) 8.Ne2 Bf5 9.d4 ed4 10.Nd4 Nb4 11.Na3 (11.Nf5? Bb2 12.c3 Na6-+) 11...Bg6 12.0-0 (12.Bc3 Nc6=) 12...c5=+ 13.Ndb5?? (13.Bc3 cd4 14.Bb4+=) 13...Bb2-+ 14.Nd6 Kf8 15.Nac4 (15.Nb7 Qd1 16.Rfd1 Ba3 17.Nc5-+) 15...Ba1 16.Qa1 Nc2 (16...b5 17.Nb7 Rb7 18.Bb7 bc4 19.Qe5-+) 17.Qc3 b5 18.Nb7 (18.Nf7 Bf7 (18...Kf7?! 19.Ne5 Ke8 20.Ng6 hg6 21.Qc5-+; 18...bc4 19.Nd8 Rd8 20.Qc4+/–) 19.Ne5 Qd6 20.Nf7 Kf7 21.Qc2 Nf6-+) 18...Rb7 (18...Qd3 19.Qe5 Rb7 20.Bb7 bc4 21.Qb8 Ke7 22.Qe5 Kd7 23.Qg7 Ne3 24.fe3 Qe3 25.Kg2-+) 19.Bb7 bc4 20.Qc4 Ne7 (20...Qd6!? 21.Rc1 Qe7 22.Bg2-+) 21.Qc5 h6 22.Rc1 (22.Bf3 Ke8-+) 22...Qd7 (22...Qd2 23.Rf1-+) 23.Bg2 (23.Bf3 Qf5 24.Qc7 f6-+) 23...Qd2 (23...f6 24.h4-+) 24.Rb1 Qd8 25.Rb2 (25.Rc1 Bf5-+) 25...Kg8 26.Rc2 Bc2 (better is 26...Qd1!? 27.Bf1 Bc2 28.Qe7-+) 27.Qc2 g6 28.a4 Kg7 29.a5?! (29.Be4-+) 29...Qa5 30.Qc3 (30.Qb2 f6 31.h3-+) 30...Qc3 31.Bf1 Qe1 32.Kg2 Nf5 33.g4 Nh4 34.Kg3 g5 35.Bc4 Rc8 36.Bd5 Rc2 (37.Kh3 Qf2 38.Bf7 Qe3) 0–1. MasterofDisaster – chessdv8, Live Game Caissa's Web, 2004.

4.Bb2 d6 5.g3 Bd7 6.Bg2 Bc6 7.Bc6 bc6 8.c3 Be7 9.Qa4 Qd7 10.Nf3 Nf6 11.d4 e4 12.Nh4 Nd5 13.c4 Nb6 14.Qb3 0-0 15.Nd2 d5 16.c5 Nc4 (16...Nc8!?–/+) 17.Nc4= Rab8 (better is 17...dc4!? 18.Qc4 Rfb8=+) 18.Ne5+/– Qh3? (better is 18...Rb3 19.Nd7 Rb2 20.Nf8 Kf8+/–) 19.Qc3+- Bh4 20.0-0-0?? (better is 20.gh4 Qe6 21.Rg1+-) 20...Bg5 21.e3 (21.Kb1 Rb5-+) 21...Qg2?? (better is 21...Nb4 22.Qd2 Na2 23.Kb1 Nb4-+) 22.Nc6 Rb7 23.Na5 (better is 23.h4 Bf6 24.Qc2–/+) 23...Rbb8?? (23...Nb4 24.Kb1 Rb5 25.a4-+) 24.Rdf1?? (better is 24.Nc6=) 24...Rb5 (better is 24...Nb4 25.Kb1 Nd3-+) 25.a3? (better is 25.Nc6!?-+) 25...Rfb8 (25...Nc5 26.dc5 Bf6 27.Qb4 Rb4 28.ab4-+) 26.Nc6 R8b7 (26...R8b7 27.Na5 Rb2 28.Nb7 Rb7-+) 0–1. MasterofDisaster – chessdv8, Live Game Caissa's Web, 2004.

4.e3 d5 5.Bb2 Bd6 6.Nf3 f6 7.c4 Ne7 8.cd5 Nd5 9.Bc4 Bb4 (better is 9...Nb6+=) 10.Ne5+= fe5 11.Qh5 g6?? (better is 11...Kf8 12.e4 Qe8 13.Qe8 Ke8 14.Bd5 c6+=) 12.Qe5+- Qe7 (12...Be7 13.Qh8 (13.Bd5?! Rf8+-; 13.Qd5?! Qd5 14.Bd5 Rf8+-) 13...Kd7 14.Bd5+-) 13.Qh8 (13.Bd5?! Rf8+-) 13...Kd7 (13...Qf8 14.Bd5 Qh8 15.Bh8+-) 14.Bd5 Nc5 15.Bf6 Nd3 (15...Qe8 16.Qh7 Kd6 17.Bf7+-) 16.Ke2 Nf4 17.Kd1 Qf8 18.Qf8 Bf8 19.ef4 Kd6 20.Nc3 c6 21.Bg8 Bf5 22.Bh7 Kd7 (22...Ke6 23.Bd4+-) 23.Rg1 Ra3 24.g4 Bd3 25.Rg3 Bc4 26.Bg6 Be7 27.Bf5 Kd6 28.Ne4 (28.Ne4 Kc7 29.Be7 Rg3 30.fg3+-) 1–0. Maci – G501, playchess.de, 2005.

4.e3 Nf6 5.Bb2 Bd6 6.Nf3 Qe7 7.Nc3 c6 8.Be2 Bc7 9.0-0 0-0 10.d4 e4 11.Nd2 d5 12.a3 Qd6 13.g3 Qe6 14.Nb3 Qh3 15.Nd2 h5 (15...Ng4!? 16.Bg4 Bg4 17.f3 ef3 18.Nf3-+) 16.Re1–/+ Ng4 17.Nf1 h4 18.Ba6 Ra6 19.Qe2 hg3 20.fg3 Nf6 21.Nd2 Bg4 22.Qf1 Qh6 23.Qf2 Bh3 24.Nb3 Bg4 25.Bc1?? (25.Nd2 Rfa8 26.Ne2-+) 25...Bf3-+ 26.Re2 Ng4 27.Qe1 c5?? (better is 27...Bd6-+) 28.Nd5+= Qh5 (worse is 28...Be2 29.Qe2 Qh3 30.Nc7+/–) 29.Nc7 Rh6 (29...Nh2!? 30.Rh2 Qh2 31.Kh2 Rh6 32.Kg1 Rh1 33.Kf2 Rh2 34.Kf1 Rh1 35.Kf2 Rh2 36.Kg1 Rh1 37.Kf2=) 30.h4+/– (30.dc5?? Qh2 31.Rh2 Rh2 32.Bb2 Rh1#) 30...g5 (30...c4 31.Nc5 Rc8 32.Nb5=) 31.Rd2 (better is 31.Nd5 c4 32.Nc5+-) 31...gh4= 32.gh4 Rg6 33.Rg2? (33.Kf1 Qf5 34.Rg2 Bg2 35.Ke2 cd4 36.Nd4 Bf3 37.Kd2 Qa5 38.c3-+) 33...Bg2 34.Nd5 (34.Qg3 Nh2!! 35.Ne8 Qd1 36.Kg2 Qf3 37.Kg1 Qg3 38.Kh1 Qg2#) 34...Qd5 35.Qg3 Bf3 36.Nc5 Ne5 37.Qg6 Ng6 38.Bd2 Nh4 (38...Nh4 39.Nd7 Qg5 40.Kf2 Qg2 41.Ke1 Qe2#; 38...Qh5 39.Ne6 Qg4 40.Kf1 Qg2 41.Ke1 Qe2#) 0–1. adriamaci (1835) – tomoa (1890), gameknot.com, 2009.

4.e4 Bc5 5.Bb2 (5.Nc3 Nf6 6.Bc4 d5 7.ed5 0-0-/+) 5...d6 (5...Nf6 6.Nc3 0-0 7.Bd3-/+) 6.c3 (better 6.d4!? ed4 7.Bd4 Bd4 8.Qd4=+) 6...Nf6-+ 7.Bd3 (7.f3 Nh5 8.Ne2 0-0-+) 7...Ng4 (7...c6!? 8.Na3-+) 8.Nh3 Qh4 9.0-0 (better 9.Qf3-+) 9...g5?? (9...Bb6 10.Bc2-+) 10.Be2? (10.Ba6 Ra6 11.d4-/+) 10...h5?? (10...Nh2 11.Kh2 g4-/+) 11.d4+= Bb6 12.Nd2 (12.Qc1!?+=) 12...Nh2= 13.Kh2 (13.Bb5 c6 14.Kh2 g4 (14...cb5?! 15.Nf3 Qe4 16.Nhg5=) 15.Ba6 Ra6-/+) 13...g4 14.Rh1? (better 14.de5 de5 15.Bb5 Ke7 16.Nf3 gf3 17.Qf3-/+) 14...gh3-+ 15.g3 Qf6 16.Rf1 ed4 (better 16...h4!? 17.Nc4 Ba7-+) 17.cd4=+ Bd4?? (better 17...h4=+) 18.Bd4?? (better 18.Qa4 Bd7 19.Qd4 Qd4 20.Bd4+-) 18...Qd4-+ 19.Bh5 (19.Nf3 Qf6-+ (19...Qe4 20.Ba6 Qf5 21.Bc4+=)) 19...Rh5! 20.Nf3?? (20.Qh5 Qd2 Deflection (20...Qd2 Overloading)) 20...Qd1 (20...Qg7 21.Re1-+) 21.Rfd1 (21.Rad1?? Bg4 22.Nh4 Bd1 23.Rd1 Nc5-+) 21...Nc5 22.Rd5 (22.Nd4 Ne4 23.f3 Nc5-+) 22...Bg4 (22...Rh8 23.Nd2-+) 23.Rh5 Bh5 24.Ng1 Kd7 25.f3 Ra3 26.g4 (26.Rf1 Ra2 27.Kh3 b5-+) 26...Bg6 27.Kg3 (27.Rf1 b5 28.Rb1 Kc6-+) 27...f6 (better 27...Be4 28.Rf1-+) 28.Kf4 (28.Nh3 Ne4 29.Kg2 Ng5-+) 28...Ne6 29.Kg3 Be4 (29...Ng5 30.Rf1 Be4 31.Nh3 Nf3 32.Kf4-+) 30.Kh3 Ng5 (30...Ng5 31.Kh4 Bf3-+) 0-1. Bushwacker (1950) - esteritafelix (2135), ChessWorld.net, 2015.

4.a4 ba4 5.Be5 Nf6 (5...d6 6.Bb2-/+) 6.e3 d5 (6...d6 7.Bf6 Qf6 8.Nc3-/+) 7.Bb5=+ c6 8.Ba4 Bd6?? (better 8...b5 9.Bb3 Ra1 10.Ba1 Bd6=+) 9.Bd6 Qd6 (9...Ra4 10.Ra4 Qd6 11.Nf3+-) 10.Bc6! Nc6 (10...bc6 11.Ra8 Discovered attack; 10...Nc6 11.Ra8 Discovered attack; 10...Qc6 11.Ra8 Discovered attack) 11.Ra8 0-0 12.Nf3 d4 13.0-0 d3 14.cd3 Qd3 15.Nc3 Nb4 (15...b5 16.Qe2 Bf5 17.Rfa1+-) 16.Ne5 Qd6 17.d4 b6 18.Qf3 Qc7 19.Nb5 Qe7 20.Rfa1 Nbd5 (20...Bb7 21.Rf8 Kf8 22.Qf5+-) 21.e4 Nb4 22.Qa3 Ne4 (22...Ng4 23.Ng4 Bg4 24.Ra7+-) 23.Rc1 Qb7 (23...Nc5 24.Qb4 Qg5 25.Re1+-) 24.Rc7 (24.Rc7 Qa6 25.Ra6 Na6 26.Rc6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.a4 Ra4 5.Be5-/+ d6 6.e3 c6 7.Bb2 Qa5 (7...Ra1 8.Ba1 Nf6 9.Nf3-/+) 8.Nc3 (8.Ra4 ba4 9.Bc3 Qa8-/+) 8...Ra1-/+ 9.Qa1 Qa1 10.Ba1 Nf6 11.Nf3 Be7 12.Be2 0-0 13.Na2 (13.0-0 Bd7-/+) 13...Na6-+ 14.0-0 Be6 15.Nc1 Ra8 16.Nd4 Bd7 17.Bb2 Nc7 18.Bd3 g6 19.f4 Nfd5 20.f5 c5 21.fg6 hg6 (21...cd4?! 22.gh7 Kg7 23.Ne2=+) 22.Nde2 Bc6 23.Rf3 c4 24.Be4 b4 25.Bd5 Bd5 26.Rh3 f6 27.Nf4 (27.Rg3 Bf7-+) 27...g5 28.Rg3 (28.Nd5 Nd5 29.Bd4 c3-+) 28...Bc6 29.h4 Kf7 30.hg5 fg5 31.Nfe2 Ne6 32.Rh3 (32.Kf1 Nc5 33.Rh3 Be4-+) 32...Kg6 33.Nd4 (33.g4 Ba4 34.c3 b3-+) 33...Nd4 34.ed4 g4 35.Re3 Kf7 36.Rg3 (36.Re2 Bg5-+) 36...Bg5 37.Rg4 (37.c3 Bf4 38.Rg4 Bd2 39.cb4 c3 40.Bc3 Bc3-+) 37...Bd2 38.d5 (38.Kf2 c3 39.Bc3 Bc3-+) 38...Bd5 39.Ne2 (39.Rg7 Kf8 40.Rg4 c3 41.Bc3 bc3-+) 39...c3 40.Bc1 Bc1 (40...Bc1 41.Nc1 Ra1 42.Rf4 Ke6-+) 0-1. DEFFM – krav, freechess.org, 2021.

4.a4 b4 5.Be5 Nc6 6.Nf3-+.

4.e3 c6 5.Be5 Nf6 6.a4 ba4=+ 7.c4 b5 (7...d5!? 8.cd5 Bf5=+) 8.cb5= cb5 9.Bb5 Now all is on a4 9...Nc6 (9...a3!?=) 10.Bc6+/- dc6 11.Ra4 Bd7 (11...Ra4 12.Qa4 Qb6 13.Nc3+=) 12.Bf6 Qf6?? (better 12...gf6 13.Nf3 Rg8+/-) 13.Ra8+- Ke7 14.Nf3 Bg4 (14...Qb2 15.0-0 c5 16.Nc3+-) 15.Ra7 Kd6 (15...Ke8 16.Qb3 Be7+-) 16.Qb3 Be6 (16...Bf3 17.Qb8 Kd5 18.Nc3 Qc3 19.dc3 Bc5 20.Qh8 Ba7 21.gf3 Bc5 22.e4 Ke6 23.Qe8 Be7 24.Qc6 Bd6+-) 17.Qb4 c5 18.Qb6 Kd5 19.Qb7 Kd6 (19...Kc4 20.Na3 Kd3 21.Qb1) 20.Ra6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Nc6 5.Bb5 d6 6.Ne2 Nf6 7.0-0 Be7 8.d4 Bd7 9.Bc6 Bc6 10.de5 de5 11.Be5 0-0 12.Nbc3 Qc8 13.Nd4 Rd8 (13...Qd7 14.Qe2+=) 14.Nc6+/- bc6 15.Qf3 Qe6 16.Bc7 Rd2 17.a4 Rc2 18.Ne2 Qg4 (18...Qd7 19.Nd4 Rc4 20.Bg3+/-) 19.Qg4+- Ng4 20.Nd4 Rc4 21.a5 Bf6 (better 21...Bb4+-) 22.Rac1 Rc1 23.Rc1 Be5 24.Be5 Ne5 25.Nc6 Nc6 26.Rc6 Kf8 27.a6 Ke7 28.Rb6 Rc8 (28...Kd8 29.e4+-) 29.Rb7 Kf6 30.g3 Rc1 31.Kg2 Ra1 32.a7 h5 33.Kf3 g5 34.Ke4 (34.g4 h4+-) 34...Ra4 (34...Ke6 35.h4 Ra4 36.Kd3+-) 35.Kd5 g4 (35...Ra1 36.Kc6 g4 37.Kb6+-) 36.Kd6 Kg6 37.Kc7 1-0. onur604 (2320) - StudyOnly251 (2160), Casual Rapid game, lichess.org, 2021.

4.e3 d5 5.Be5 Nd7 6.Bb2 c6 7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.d3 Nb6 11.a3 Na4 12.Be5 Be5 13.Ne5 d4 14.e4 Nd7 15.Nf3 c5 16.Qd2 Qf6 17.Qg5 Qg5 18.Ng5 Ne5 19.Nf3 Nc6 20.Nfd2 Be6 21.f4 f6 22.f5 Bf7 23.Rc1 Nb2 Black prepares the advance c4 24.Nb3 b6 25.Ra2 Na4 26.Ra1 c4 27.N3d2 c3 28.Nf3 Nc5 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 e4 5.Bb5 Ra5 6.a4 c6 7.Be2 b5 (better 7...d5!?=+) 8.ab5+/- Ra1 9.Ba1 cb5 10.Nc3 Bb4? (better 10...Qg5 11.Bf1 d5 12.Nb5 Nc6+/-) 11.Ne4+- Nf6 (11...Kf8 12.Qb1 Qa5 13.c3+-) 12.Bf6 gf6 13.Qb1 Nc6 14.Bb5 Qa5 (14...Be7 15.Ne2+-) 15.Nf3 (better 15.Qb2+-) 15...Qb5 (15...Be7+-) 16.Nd6!! Bd6 17.Qb5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Qe7=+ 5.Nc3 (5.Nf3 e4 6.Nd4 b4=+) 5...c6–/+ 6.a4 (6.Nf3 d5–/+) 6...b4 7.Ne4 d5 8.Ng3 Nf6 9.Nf3 e4 (9...Nbd7 10.Be2–/+) 10.Nd4 h5 (10...b6 11.Be2–/+) 11.Ndf5 (11.Ngf5 Qd8–/+) 11...Qd8–/+ 12.h4 g6 13.Nd4 Bg4 14.Be2 Be2 15.Nde2 Bg7 16.d3 ed3 17.Qd3 Nbd7 18.0-0 0-0 19.Rfd1 Qe7 20.a5 Nc5 21.Qd4 Ne6 22.Qd3 Ng4 23.Bg7 Ng7 24.Qd2 Rfe8 25.Nd4 Ne5 26.Rdb1 c5 27.Nde2 Rad8 28.c3–/+ Qh4 29.cb4 Ng4 30.bc5=+ Qh2 31.Kf1 h4 32.Qd4 Ne3! 33.fe3 hg3 34.Qf6 Nf5-+ 35.Rb3 d4! 36.Qd8 Rd8 37.Rd1 d3! (38.Rdd3 Ne3 39.Ke1 Ng2 40.Kd2 Qh6 41.Kd1 Qh1 42.Kc2 Ne1 43.Kd2 Rd3 44.Rd3 Nd3 45.Kd3 Qd5 46.Ke3 Qc5 47.Nd4 Qc3 48.Kf4 g5 49.Ke4 g2-+) 0–1. Strolch,S – Empytantocin,D, internet, 2005.

4.Be5 b4=.

4.Be5 c5 5.Nc3 Nc6 6.Bg3 Ra5 (6...b4 7.Nb5 d6 8.d4 cd4 9.Nd4 Nd4 10.Qd4=) 7.e3 b4 8.Nb5 d6 9.Nf3 (9.d4 cd4 10.Nd4 Nf6+=) 9...Nf6 10.d4 cd4 (10...Ne4 11.dc5 Ng3 12.hg3 dc5 13.Bc4=) 11.Nfd4+= Ne4 12.Nb3 The pressure on the isolated pawn grows (better 12.Bd3 Ng3 13.hg3+=) 12...Nc3?? (better 12...Ng3 13.hg3 Ra8=) 13.Nc3+- bc3 14.Na5 Qa5 15.Bd6 Be7 16.Bc4 0-0 17.Be7 Ne7 18.0-0 Rd8 (18...Nc6 19.Qd5+-) 19.Qf3 (19.Qf3 Nf5 20.Rad1+-) 1-0. onur604 (2320) - molodoy1775 (2290), Casual Rapid game, lichess.org, 2021.

4.Be5 Bc5?? 5.Bg7+- f6 (5...Bd4 6.Bd4 Nf6 7.e3+-) 6.Bh8 Qe7 7.e3 c6 8.Qh5 Kf8 9.Bd3 h6 10.Nf3 d5 11.Nh4 Ra4 (11...Qf7 12.Bg6 Qc7+-) 12.Ng6 Ke8 1-0. DEFFM – empekkk, freechess.org, 2020.

4.Be5 c6 5.e3 Na6 6.Nf3 Nc7 (6...Nf6 7.Be2=) 7.Bd3 Ne6 8.0-0 Bc5 (8...d6 9.Bg3=) 9.Nd4 Nf6 10.Ne6 (10.Nf5 d6 11.Bb2 0-0=) 10...fe6 11.Nc3 d6 (11...d5 12.a4 b4 13.Ne2=) 12.Bf6+= Qf6 13.a4 b4 14.Ne4 Qe5 (better 14...Qh6!?+=) 15.f4+- (worse 15.Nc5 dc5 16.Qf3 Ra5+=) 15...Qd5 16.Ng5 (16.Nc5?! Qc5 17.Qg4 0-0+=) 16...h6? (better 16...h5+-) 17.Qh5 Kd8 18.Nf7 White prepares the advance f5 18...Kc7 19.Qd5 ed5 20.Nh8 Be6 (20...d4 21.e4+-) 21.f5 Bd7 22.Ng6 Re8 (22...Kd8 23.Nf4 Ke7 24.Nh5+-) 23.a5 h5 (23...d4 24.e4+-) 24.Nf4 h4 (24...d4 25.e4+-) 25.Ne6! Kb8 (25...Be6 26.fe6 Passed pawn) 26.Ng7 Rf8 (26...Rg8 27.f6+-) 27.Rf4 Rf7 28.Ne6 h3 (28...Be6 29.fe6 Re7 30.Rh4+-) 29.Ng5 Rf6 (29...Rf8 30.Nh3 Kc7 31.g4+-) 30.Nh7 Rf7 31.f6 hg2 (31...Be8 32.Bg6 Rh7 33.Bh7+-) 32.Bg6 Be8 33.Bf7 Bf7 34.Ng5 Bg6 35.d4 Ba7 36.f7 Bf7 37.Rf7 b6 (37...b3 38.cb3 Kc8 39.a6 b5 40.Ra7 c5 41.Kg2 Kd8 42.Rf1 Ke8 43.Rff7 cd4 44.Ra8) 38.a6 c5 (38...Kc8 39.Ra7 b5 40.Rf7 Kb8 41.a7 Ka8 42.Rf8 Kb7 43.a8Q Kb6 44.Qa7) 39.Ne6 cd4 (39...Kc8 40.Rc7 Kb8 41.Rd7 Ka8 42.Rd8 Bb8 43.a7 b3 44.ab8Q) 40.Rf8 1–0. Pierre – GuestTyrfz, internet, 2020.

4.Be5 c6 5.e3 d5 6.Nf3 Nf6 7.Be2 Bf5 8.Nd4 Bg6 9.f4 Nbd7 10.0-0 (10.0-0 Ne4 11.Nf3-/+). onur604 (2320) - igotfever (2310), Casual Rapid game, 2021.

4.Be5 Bd6?? 5.Bg7+- Nf6 (5...Be5 6.Be5 Nf6 7.Nc3+-) 6.Bh8 1–0. dwtu – vhry, internet, 2009.

4.Be5 f6 5.Bb2 c6 6.e3 d5 7.Bd3 Nd7 (better 7...Nh6=) 8.Qh5+/- Ke7 9.Nh3 (9.Ba3 Ra3 10.Na3 Ne5+/-) 9...Ne5 (better 9...Qe8!? 10.Be2 Nh6=) 10.Be5+/- (10.Bh7?! g6 11.Qh4 Bh3 12.Qh3 Qc7=+) 10...fe5 (10...Bh3 11.Bf6 (11.Qh3?! fe5 12.0-0 Nf6=) 11...Nf6 12.Qh3+=) 11.Qe5 Kd7?? (better 11...Be6+/-) 12.Bf5 1-0. onur604 (2320) - IGOR60 (1810), lichess.org, 2020.

4.Be5 f6 5.Bb2 c6 6.e4 d5 7.e5 fe5 (7...Nd7 8.Qh5 g6 9.Qe2=) 8.Qh5+= Kd7 (8...Ke7 9.Qe5 Kf7 10.Nf3+=) 9.Be5 (9.Nf3 Qe7+=) 9...Qe7 10.Nf3 g6?? (better 10...Kd8 11.Qg5 Nf6=) 11.Qg4+- Kd8 12.Qg5 Bh6 (12...Nf6 13.Qf6 Rg8 14.Be2+-) 13.Qe7 Ke7 14.Bh8 Nf6 15.Bf6 Kf6 16.Nc3 Bg4 17.Be2 Nd7 (17...b4 18.Nd1+-) 18.Nd4 Be2 19.Nce2 Ne5 (19...b4 20.h4+-) 20.d3 Bg7 21.0-0 Kf7 22.f4 Ng4 23.f5 g5 (23...Be5 24.fg6 Kg6 25.Nf4 Kf7 26.Nfe6 Kg6 27.h3+-) 24.c3 Ne5 (24...Ne3 25.Rf2+-) 25.Ne6 Nd3 (25...Bh6 26.d4 Nc4 27.h3+-) 26.Ng5 Kg8 27.f6 Bh6 28.f7 Kg7 (28...Kh8 29.Ne6+-) 29.Ne6 Kg6 30.f8Q Rf8 (30...Bf8 31.Nf8 Kg7 32.Ne6 Kg8 33.Rf6+-) 31.Nf8 Kg7 32.Ne6 Kg6 33.Rf3 Ne5 34.Raf1 (better 34.Rg3 Kf7 35.N2d4 Ke7+-) 34...Nf3 35.Rf3 1–0. onur604 (2315) – owl77 (1995), lichess.org, 2020.

4.Be5 f6 5.Bb2 Qe7 6.e3 d6? (better 6...b4!?+=) 7.Bb5+/- c6 8.Bd3 Be6 9.Nf3 Nh6 10.Nd4 Na6 (10...Nd7 11.Nc3+/-) 11.Qh5 (11.0-0 Nc5+/-) 11...Nf7 (11...Qf7 12.Be2 Qh5 13.Bh5 Bf7 14.Bf3+/-) 12.Ne6 (better 12.Bh7 Nc5 13.0-0+-) 12...g6?? (better 12...Qe6 13.Nc3 g6+/-) 13.Qh3+- Rc8 (13...Nb4 14.0-0 Nd3 15.cd3 Ra5+-) 14.Nf8 Qf8 (14...Kf8 15.Qc8 Kg7 16.Qg4+-) 15.Qc8 Nd8 16.Ba6 ba6 17.Qa6 c5 18.Qb5 (better 18.Nc3 Rg8 19.Nd5 Rg7+-) 18...Ke7 19.Nc3 f5 20.Nd5 Ke6 21.Nb6 (21.Nb6 Kf7 22.Bh8+-) 1-0. DEFFM – timeoutplay, freechess.org, 2021.

5.Bb5 c6 6.Be2 Be7 7.c4 Bf6 (7...Nf6 8.Nf3=+) 8.d4= e4 9.Nc3 d5 10.cd5 cd5 11.Qb3 Ne7 12.f3 ef3 13.Nf3 Nbc6 14.0-0 Rb8 15.Bd3 Be6 16.Ne2 (16.Ba3 0-0+=) 16...0-0 (16...Na5 17.Bb5 Bd7 18.Qd3=) 17.Nf4+= Bf5? (better 17...Bg4!?+=) 18.Bf5+- Nf5 19.Nd5 Ne3? (better 19...Na5 20.Qb5 Bh4+-) 20.Nf6 (20.Qe3?! Qd5 21.Qb3 Rfd8=; 20.Ne3?! Bd4 21.Bd4 Nd4 22.Nd4 Qd4+-) 20...Qf6 21.Qe3 Rfe8 22.Qc3 Rbc8 (22...Qg6 23.d5 Ne7 24.Rad1+-) 23.Rae1 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb5 c6 6.Be2 Nf6 7.c4 Be6 8.Nf3 e4 (8...Be7 9.0-0=) 9.Nd4 Bd7 10.Nc3 h6 11.Qc2 d5 12.cd5 cd5 13.Qb3 Bd6 (better 13...Bc6!?+=) 14.Nd5+- 0-0? (better 14...Nc6!?+-) 15.Nf6 Qf6 16.Qb7 Ra5 17.Bc3 (17.Qe4 Re8 18.Qf3 Qg6+-) 17...Rg5? (better 17...Re5+-) 18.Nf3 Rf5 (18...Qf5 19.Ng5 Bc6+-) 19.Bf6 (19.Bf6 ef3 20.Bg7 Kg7 21.gf3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb5 c6 6.Be2 Nf6 7.c4 Be7 8.Nf3 0-0 9.0-0 e4 10.Nd4 Nbd7 11.Qc2 Nc5 12.Nc3 Re8 13.a4 Bg4 (13...Qc7!?=) 14.Bg4+/- Ng4 15.Ne4 Ne4 16.Qe4 Qd7 (16...Ne5 17.Qc2+/-) 17.Qc2 Bf6 18.Rab1 Be5 19.f4 Bd4 20.Bd4 (20.ed4?! d5=) 20...c5 21.Bc3 Ra4 22.Rb7! Qb7 23.Qa4 Ra8 24.Qd1 Nf6 (24...f5 25.Qb1 Qf7 26.Qb6+/-) 25.Bf6+- gf6 26.Qg4 Kf8 27.Qf5 Ra2 28.Rb1 (28.Qh7?! Rd2 29.Qh3 Rc2+=) 28...Rb2 29.Rb2 Qb2 30.Qd5 (30.Qh7?! Qd2 31.Qh4 Qe3 32.Qf2 Qd3=) 30...Qc1 31.Kf2 Qh1? (31...Ke7+-) 32.Qd6 Kg7 33.Qc5 Qh2 34.Qd5 Qh4 35.Kf1 Qh1 36.Ke2 Qh5 (36...h5+-) 37.Qh5 (37.Qh5 Kf8 38.c5 h6 39.c6 Kg7 40.Qg4 Kh8 41.c7 Kh7 42.c8Q h5 43.Qh5 Kg7 44.Qch8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb5 Bd7 6.Be2 Nf6 7.Nf3 Be7 8.0-0 Nc6 9.c4 0-0 10.Nc3 Bg4 11.d4 e4 (11...ed4!? 12.Nd4 Be2 13.Nce2 Ne5=) 12.Nd2+= Be2 13.Qe2 d5 14.cd5 Nd5 15.Nde4 Nc3 16.Nc3 Bf6 17.Ne4 Qe7 (better 17...Be7!?+/-) 18.Nf6+- gf6 19.Rfc1 Ra5 20.Qf3 Rg5 21.a4 Qd7 22.Rc5 Qg4? (22...Rd8+-) 23.Qg4 Rg4 24.d5 Ne5 25.Be5 (better 25.Rc7 Rb8+-) 25...fe5 26.Rc7 Ra8 27.d6 Raa4 (27...Rd8 28.d7 Kf8+-) 28.Rd1 (28.Rb7?? Ra1 29.Rb1 Rb1) 28...Ra6 (28...Rg6 29.Kf1 Ra8+-) 29.d7 (29.d7 Rd4 30.ed4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb5 c6 6.Be2 Nf6 7.Nf3 Be7 8.c4 0-0 9.d4 e4 10.Nfd2 d5 11.0-0 Bf5 12.Nc3 Nbd7 13.cd5 cd5 14.Qb3 Nb6 15.a4 Be6 16.Nb5 Rc8 17.Rfc1 Qd7 18.Rc8 Rc8 19.Na7 Nc4? (better 19...Ra8 20.Qb6 Bd8=) 20.Nc8+- Nd2 21.Ne7 Qe7 22.Qb5 Nc4 23.Bc3 Ne8 (23...h6 24.Rb1 Qa3 25.Qb4 Qb4 26.Bb4+-) 24.Bc4 dc4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb2 b4 6.Nf3 Nf6 7.e3 d5 8.a3 Bd6 9.c3 bc3 10.Nc3 0-0 11.Be2 Ne5 (11...Re8 12.Nb5+=) 12.h3 (12.Nd5!? Nf3 13.Bf3 Nd5 14.Bd5=) 12...c6 13.0-0 Nf3 14.Bf3 Bc7 15.Qc2 Qd6 16.Rfc1 d4 17.Ne4 Ne4 18.Be4 f5 19.Bf3? (19.Bd3 Qh2 20.Kf1 Qh1 21.Ke2+/–) 19...d3-+ 20.Qc4 Be6 21.Qf4 Qf4 22.ef4 Bf4 23.Bc3 Bd6 24.a4 Rfe8 25.g3 g6 26.Kg2 Bc4 27.Rab1 Ba6 (27...Ra4?! 28.Rb7 Bb5 29.Rg7 Kf8 30.Rh7=) 28.Bd4 h6 29.h4 Kh7 30.Be3 h5 31.Rb6 Bc7 32.Rb4 Re7 33.Bc5 Rf7 34.Re1 Rd7 35.Re6 Ba5 36.Rb2 Kg7 37.Re1 Kf7 38.Rc1 Re8 39.Be3 Bd8 40.Rcb1 Re5 41.Rc1 Kg8 ½–½. alanhollywell1 (2035) – biggie (2210), gameknot.com, 2013.

5.Bb2 d5 6.e3 b4 7.a3 ba3 8.Na3 Nf6 9.Nf3 Be7 10.Be2 0-0 11.0-0 Bf5 12.Nb5 Qd7 13.Ne5 Ne5 14.Be5 c6 15.Nd4 Bg6 16.f4 h6 17.f5 Bh7 18.Qe1 c5 19.Nb3 Bf5 20.Bf6 Bf6 21.Nc5 Qc6 22.Ra8 Ra8 23.Rf5 (23.c3 Be4 24.Ne4 de4=+) 23...Qc5 (23...Ra1 24.Bd1 Qc5 25.Rf1=+) 24.c3 Qd6 25.Qb1 b6 26.g3 Ra5 27.Rf4 Qc6 (27...Be5!? 28.Rf3 Qe6=) 28.Bf3 Qa8 (28...Be5 29.Rb4+/-) 29.Qd3+/- (29.Qb6?! Ra2 30.Rf6 Rd2 31.Bd5 Qd5=) 29...Qd8 30.Rf5 Kh8 (better 30...d4!? 31.ed4 Qd7 32.Ra5 ba5+/-) 31.Rd5+- (31.Bd5?! g6 32.Rf6 Qf6=) 31...Rd5 32.Qd5 Qd5 33.Bd5 Kh7 (better 33...Kg8+-) 34.Bf7 g5 35.e4 Kg7 36.Bd5 Kf8 37.d4 Ke7 (37...b5 38.e5 Bd8 39.Kf2+-) 38.e5 Bg7 39.Kf2 Kd7 40.c4 Ke7 41.Kf3 h5 (41...Bf8 42.Bc6+-) 42.Ke4 h4 (42...g4 43.Bc6+-) 43.g4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb2 d5 6.e3 d4 7.Bb5+= Qd5 8.Bc6 bc6 (8...Qc6!? 9.Nf3 Bf5+=) 9.Nf3+- (worse 9.Bd4 c5 10.Qf3 Qf3 11.Nf3 cd4 12.Nd4 Nf6=+) 9...de3 10.fe3 (10.de3 Bg4+-) 10...Nh6 (10...Ra2 11.Ra2 Qa2 12.Be5+-) 11.0-0 (11.a4 f6+-) 11...Rb8 (11...Ra2!? 12.Nc3 Ra1 13.Qa1 Qe6+-) 12.Be5+- f6 (12...Qa5 13.Bf4+-) 13.Bc7 Rb7 14.Bf4 g5 (14...Nf5 15.e4! Qc4 16.d4+- (16.ef5?! Qf4 17.c3 Qf5+-)) 15.Nc3 (15.Bg3 Qd7+-) 15...Qc4 16.Bg3 Bc5 17.Qe2 Qg4 (17...Qe2 18.Ne2 Nf5 19.Rfb1+-) 18.Qa6 (18.Qd3 Be7+-) 18...Rb6 (18...Qd7+-) 19.Qa7 0-0 (19...Nf5 20.d4 Ng3 21.hg3+- (21.dc5?! Rb7 22.Qa6 Rc7+-)) 20.Bd6! Bd6 21.Qb6 Bd7 (21...Qe6 22.a4+-) 22.h3 (22.a4 Rb8 23.Qa7 Qe6+-) 22...Qf5 23.Qd4 Bc5 (23...Qe6 24.Ne4 Nf5 25.Qd3+-) 24.Qc4 Be6 25.Qa6 (25.Qa4 Bd7+-) 25...Bd7 26.Qc4 Be6 27.Qa4 Bd7 28.Nd4 (28.Ne4 Qd5+-) 28...Qe5 29.Nc6 Qd6 (29...Qe6 30.Nd4 Qf7 31.Qb3 Bd4 32.ed4+-) 30.Ne4 Qc6 1–0. onur604 (2320) – romanwhite (2045), lichess.org, 2020.

5.Bg3 d6 6.e3 Na7 (6...h5 7.Nf3 (worse 7.Bb5 h4-/+) 7...g5 8.h3= (worse 8.Bb5 h4-/+)) 7.Nf3 c6 8.Bd3 Nf6 9.0-0 h6 (9...Be7 10.Nc3=) 10.a4 Bd7 (10...ba4!? 11.Ra4 Be7=) 11.ab5+/- Nb5 12.Ra8 Qa8 13.c4 Nc7 14.Nc3 Be7 15.c5 Qa3 16.cd6 Bd6 17.Ne5 0-0?? (better 17...Be6+=) 18.Nc4+- (18.Nd7?! Nd7 19.Bd6 Qd6+=) 18...Qa6 19.Bd6 (19.Nd6?! Qd3 20.Nb7 Ne6+/-) 19...Ne6 (19...Rc8 20.Ne5 Qa7 21.Nd7 Nd7 22.Bf5+-) 20.Bf8 Nf8 21.Ne5 (21.Ne5 Qa5 22.Nd7 N6d7 23.Be4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bg3 Qf6 6.Nc3+= Bb4?? (better 6...d6+=) 7.Nd5+- (7.Nb5?! Ba5 8.Bc7 Nd4 9.Nd4 Bc7+-) 7...Qd4 (7...Qb2 8.Nc7 Kd8 9.Rb1 (9.Na8?! Bd2 10.Kd2 Qd4 11.Kc1 Qa1 12.Kd2 Qd4 13.Ke1 Qc3 14.Qd2 Qa1 15.Qd1 Qc3 16.Qd2 Qa1 17.Qd1 Qc3=) 9...Qa2 10.Na8 Qa8 11.Ra1+-) 8.Nc7 Kf8 9.Nf3 (9.Na8?! Bd2 10.Qd2 Qa1 11.Qd1 Qc3 12.Qd2 Qa1 13.Qd1 Qc3 14.Qd2 Qa1=) 9...Bd2 (9...Qa7 10.e4+-) 10.Nd2 Ra4 11.e3 Qf6 (11...Qb2 12.Rb1 Qf6 13.Nd5+-) 12.Bb5 Ra5 (12...Ra7 13.Ne4 Qb2 14.Nd6+-) 13.0-0 Nge7 14.Ne4 Qf5 (14...Qg6 15.Nd6 Nb8 16.Qd4 Rb5 17.Ncb5+-) 15.Nd6 Qg6 (15...Rb5 16.Nf5 Rf5 17.Bd6+-) 16.Nc8 Nc8 (16...d5 17.Bc6 Nc8 18.Bd5 Ke7+-) 17.Qd7 Qe4 18.Bc6 bc6 19.Qd8 (19.Qd8 Qe8 20.Qe8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nc3 b4!? 7.Nb5 Be7 +=.

6.Nc3 Bc5 7.Nb5= Ng4 (better is 7...0-0!?=) 8.e3+/– Nb4?? (better is 8...Nf6+/–) 9.Qg4+- d6 (9...Rg8 10.Qe4 Kf8 11.a3+-) 10.Qg7 (10.Qg7 Rf8 11.Qh7+-) 1–0. Janek – Emir, internet, 2016.

6.e3 b4 7.a3 ba3 8.Na3 d5 (8...Be7 9.Nf3 (9.Be2 0-0 10.Nf3 Re8 11.0-0 d5 12.Nb5 Ra1 13.Qa1=) 9...0-0 10.Be2 b6 11.0-0 Re8 12.c4 d5 13.cd5=) 9.Nb5 (9.Nf3 Bc5 10.Nb5 Ra1 11.Qa1 Nb4 12.Ke2 Be7 13.Qa4=; 9.Be2 Bc5 10.Nb5 Ra1 11.Ba1 Be7 12.Nf3 0-0 13.0-0=) 9...Ra1 10.Qa1 Bb4 (10...Be7!?= 11.Qa4 0-0 12.Qf4 Ne8 13.Nf3=) 11.Nf3 (11.Be5 Ne5 12.Qe5 Kd7 13.g3+=) 11...0-0 (11...Be7+= 12.Qa4 Bf5 13.Ne5+=) 12.Bd3 (12.Bf6 gf6 13.Qa4 Re8+/–) 12...Re8 (12...Be7 13.Be2= (13.Qa4=)) 13.h3 (13.Bf6 gf6 14.Qa4 f5+/–) 13...d4 (13...Be7!?=) 14.Nfd4 (14.Nbd4 Ne7+/–) 14...Nd4 (14...Ne5 15.Be2+=) 15.Nd4 c5 (15...Ne4 16.Nf3 Nc5 17.Be2+/–) 16.Nf3 b5? (better is 16...Nh5!?+/–) 17.Bf6+- Qf6 (17...gf6 18.Bb5 Re7 19.Qa8+-) 18.Qf6 gf6 19.Bb5 Rd8 20.Ke2 Bb7 21.c3 Ba5 22.Ra1 Bb6 23.Ra4 Kh8 24.Bd3 Rg8 25.g3 Bc8 26.Rh4 Rg7 27.Be4 Kg8 28.d4 Ba6 29.Bd3 c4 30.Be4 Kf8 31.Bh7 Ke7 32.Rh5 Bb7 33.Nd2 Ba6 34.h4 Ke6 35.Ne4 Bb7 36.Rb5 Be4 37.Rb6 Kd5 38.Be4 Ke4 39.Rb5 Rg8 40.f3# 1–0. pierre – Alvin Xavier, internet, 2008.

6.e3 b4 7.a3 Be7 A) 8.Nf3 d5 9.Bb5 0-0 10.0-0 Bg4 11.h3 Bh5 12.ab4 Ra1 13.Ba1=+; B) 8.Be2 d5 9.Nf3 0-0 10.0-0 Re8 11.ab4 Ra1 12.Ba1 Nb4 13.Bf6=.

6.e3 b4 7.Nf3 d5 8.Bb5 Be7 9.a3 Bg4 10.ab4 Ra1 11.Ba1 Bb4 12.Bc6 bc6 13.h3 Bh5 14.0-0 0-0 15.d3 Qe7 16.c3 Bd6 17.Nbd2 c5 (17...Ne4!?=+) 18.c4= c6 19.Re1 Rd8 (19...Ra8 20.e4 de4 21.Bf6 Qf6 22.Ne4=) 20.Qa4 Qb7 (20...dc4 21.Qc4 Nd5 22.Nh4+=) 21.Rb1 Ra8 (21...Qc7!?+=) 22.Rb7+/- Ra4 23.Bf6 (23.Be5!? Be5 24.Ne5 Ra1 25.Kh2+/-) 23...gf6+= 24.g4 Bg6 25.Rb6 (25.Rd7 Bf8 26.cd5 Bd3+=) 25...Bd3 (better 25...Kf8!?+=) 26.Rc6+/- dc4 27.Rd6 c3?? (better 27...Bg6 28.Rd5 c3 29.Rc5 cd2 30.Nd2 Kf8+/-) 28.Rd3+- c2 (28...Ra3 29.Ne1 cd2 30.Rd2+-) 29.Nb3 (29.Nb3 Rb4 30.Rc3 Rb3 31.Rc2+-) 1-0. onur604 (2320) - Rolle (2000), lichess.org, 2020.

6.e3 b4 7.Nf3 d5 8.Be2 Be7 9.0-0 0-0 10.d3 Be6 11.Nd4 (11.a3 Re8=) 11...Nd4 12.Bd4 c5 13.Bb2 d4 14.ed4 cd4 15.Nd2 Ra2 16.Ra2 Ba2 17.Qa1 Be6 18.Bd4 Qc7 19.Qb2 Ra8 20.Nb3 Bf8 21.Bd1 (21.Bf6 gf6 22.Bf3 Qc3 23.Qc3 bc3=) 21...b6 (better is 21...Nd5!?=) 22.Bf6+= gf6 23.Qf6 Bg7 24.Qf3 Re8 25.Re1 Bd7 (25...Be5!?+=) 26.Re8+- Be8 27.Qe4 Bc6 28.Qb4 Qe5 29.d4 Qe4 30.Bf3 (better is 30.f3!? Qe3 31.Kf1+/–) 30...Qc2= 31.Kf1 (31.h3 Qb1 32.Kh2 Bf3 33.gf3 Qb2=) 31...Qb1 32.Qe1?? (better is 32.Ke2 Qb2 33.Ke3 Bh6 34.Kd3 Bf3 35.gf3 Qf2 36.Qb6 Qf3 37.Kc4 Qe2 38.Kd5 Qh2 39.Nc5+=) 32...Bb5 33.Be2 Be2 34.Ke2 Qb3 35.Qd2 Qc4 36.Qd3 Qd4 37.Qd4 Bd4 38.f3 Kg7 39.Kd3 Bg1 40.h3 Kg6 41.Kc4 (41.Ke4 b5-+) 41...Kg5 42.g3 (42.Kd5 Kf4 43.h4 h5-+) 42...Bf2 43.f4 Kf5 44.Kb5 Ke4 0–1. Starr,Albert Martin – Jones,Ian (1655), San Francisco Pafnutieff Memorial g/45, 2005.

6.e3 b4 7.Nf3 Be7 8.Bb5 0-0 9.0-0 Ra5 10.Qe2 Re8 11.a3 ba3 12.Na3 b6 13.Bc6 dc6 14.Nc4 Ra1 15.Ra1 Bg4 16.Nce5 Qd5 17.Ng4 Ng4 18.h3 Bf6 19.e4 (worse 19.hg4 Bb2 20.Ra7 Qd7+=) 19...Qb5? (better 19...Qe6 20.e5 Nh6+/-) 20.Qb5+- cb5 21.e5 (21.hg4?! Bb2 22.Ra2 Bc1+=) 21...Ne5 22.Be5 Be5 1-0. onur604 (2320) - HRNEC93 (2425), Casual Rapid game, lichess.org, 2021.

6.Nf3 b4!?-/+.

6.Nf3 Bc5 7.e3= b4 8.d4 Be7 9.d5 (9.d5 Na5 10.a3=). DEFFM – GuestRLQG, freechess.org, 2021.

7.Bb5 Bd6 8.Nf3 0-0 9.0-0 Ne4 10.Bc6 bc6 11.d3 Nf6 12.Be5 Be7 (12...Bg4 13.Bd6 cd6 14.a4+=) 13.a4 Ng4 14.a5 (14.Bf4 Bd6+/-) 14...Ne5+= 15.Ne5 Bb7 (15...Bf6 16.f4+= (worse 16.Nc6 Qd7 17.Nd4 c5-/+)) 16.Qg4+/- Bd6 17.Nf3 c5 18.Nbd2 f5 19.Qa4 Rf6 (19...Qf6 20.c4+/-) 20.Qb3 Bc6 21.e4 (21.c4 Re6+-) 21...fe4 22.de4 c4 23.Qc3 de4 (23...Rf4!?+/-) 24.Qc4+- Kh8 25.Ne4 Be4 26.Qe4 Rf4 27.Qd3 White plans a6 27...Qf6 28.a6 Bc5 29.Qd5 Qf8 30.Qd3 Rd8?? (30...Qf6 31.Rfb1 Ba7+-) 31.Qc3+- Ra8 32.Rfb1 Ba7 (32...Rf6 33.Qd3+-) 33.Rb7 (33.Qc7 Rf7 34.Qc3 Rc8+-) 33...Bb6 34.a7 Qd6 (34...Re4 35.Qc6 Ree8 36.c3+-) 35.Rb8 Rf8 36.Ng5 h6 (36...Qe7 37.Ra8 Ra8+-) 37.Nf7 (37.Nf7 Kh7 38.Nd6 Bf2 39.Kh1 Rfb8 40.ab8R Rb8 41.Nf5+-) 1-0. wgr069 (2315) - darmc2k (2230), Casual Blitz game, lichess.org, 2021.

7.Bb5 Bd6 8.Nf3 Bg4 9.Bc6 (9.Bf6 Qf6 10.Nc3 Qf5+/-) 9...bc6+= 10.0-0 0-0 11.a4 Ne4 (11...Qe7 12.a5+=) 12.d3 Ng5 13.Nbd2 Qe7 14.c4 Rfb8 15.Bd4 (15.Bc3 dc4 16.dc4 Nf3 17.Nf3 Rd8=) 15...c5= 16.Bc3 dc4 17.dc4 Rd8 18.Qe2 Nf3 19.Nf3 (19.gf3?? Qh4 20.f4 Be2-+) 19...Qh4 (better 19...Bf3!? 20.Qf3 Qh4=) 20.Nh4+/- Be2 21.Rfc1 Bc4 (21...Rdb8 22.Nf5 g6 23.Nd6 cd6 24.Bd2+/-) 22.Bg7! Kg7 23.Rc4 Be5 (23...Rdb8 24.Nf3+/-) 24.Rac1 Rd2?? (better 24...Rdb8+-) 25.Nf3 (25.Nf3 Rd5 26.e4+- (26.Rc5?! Rc5 27.Rc5 Ra4+/-; 26.Ne5?! Re5 27.e4 Re6+-); 25.Rc5?! Bb2 26.Rb1 Ra4+/-) 1-0. onur604 (2320) - Mustapha95 (2260), Casual Rapid game, lichess.org, 2021.

7.Bb5 Bd7 8.Nf3 Be7 9.0-0 0-0 10.c4 dc4 (10...Nb4 11.Bd7 Qd7 12.cd5 Na2 13.Be5=) 11.Bc4+= Bd6 (11...Be6 12.Qe2+=) 12.d4 Ne4 (12...Be6 13.Be2+=) 13.Bd5 (13.Nc3 Qe7+/-) 13...Qe7 (13...Nf6 14.Bb3+=) 14.Nc3 Nc3 (14...Bf5 15.Be4 Be4 16.Ne4 Qe4 17.a4+/-) 15.Bc3+/- Rab8 (15...Ra3 16.Qc2+/-) 16.Qd3 (16.Rb1+/-) 16...b5 (16...Be6!? 17.Be6 fe6+/-) 17.e4+- b4 (17...Bf4 18.g3 Bh6 19.a3+-) 18.Bd2 Qe8 (18...Qd8 19.Bg5 Be7 20.Bf4+-) 19.e5 Be7 20.Be4 h6 (20...Kh8 21.Rfc1+- (21.Bh7?! g6+=)) 21.Rac1 (21.Rfc1 Kh8+-) 21...Rb6 (21...Nd8 22.Qe3 c6 23.Bc2+-) 22.d5 Na5 23.Rc7 Bb5 (23...Bd8 24.Rcc1 Bb5 25.Qd4 Bf1 A) 26.Kf1?! b3 27.Bd3 Rb8 28.Bh6 f5+- (28...gh6?? 29.Qg4 Kh8 30.Qf5 Qe5 31.Qh7); B) 26.Rf1+-) 24.Qd4 Rb7 (24...Bf1 25.Qb6 (25.Kf1?! Rb8+-) 25...Nc4 26.Qb7+-) 25.Rb7 Nb7 26.d6 Bf1 (26...Nd6 27.ed6 Bd6+-) 27.de7 Qe7 28.Bb4 Qd8 (28...Qc7 29.Bf8 Kf8 30.Kf1+-) 29.Bf8 Qd4 (29...Qf8 30.Kf1 Qc8 31.a4+-) 30.Nd4 Kf8 31.Bb7 (31.Bb7 Bc4 32.a4+-) 1-0. onur604 (2320) - Chris18503 (2005), lichess.org, 2020.

7.Bb5 Ne4 8.Nf3+- Bg4 9.h3 Bh5 (9...Bd7 10.0-0+-) 10.g4 Bg6 11.0-0 (11.d3 Nd6 12.Bc6 bc6+-) 11...h5 (11...Nd6 12.Bc6 bc6 13.d3+=) 12.Ne5+- Qh4 (12...Qf6 13.c4 dc4 14.Qc1 hg4 15.Nc6–/+) 13.Qf3 (13.Nc6 Qh3 14.g5+=) 13...Ng5?? (better 13...Ra5 14.c4 Bd6 15.Nc6 Rb5 16.cb5 Ng5 17.Qd5 hg4 18.Qe5 Be5 19.Re1 Nf3 20.Kf1 Bd3 21.Kg2 Qh3) 14.Qd5+- Bd6 15.Bc6 bc6 (15...Ke7 16.Bb7 Be4 17.Qe4 Ne4 18.Be4 Rae8+-) 16.Qc6 Ke7 17.Qd7 Kf6 (17...Kf8 18.Ng6 fg6 19.Qg7 Ke8 20.Qh8 Kd7 21.Qg7 Kc6+-) 18.Nc6 Be5 1–0. onur604 (2320) – Neil_Siongco00 (2230), lichess.org, 2020.

7.Bb5 Be7 8.Bc6 bc6 9.Nf3 0-0 10.0-0 Bg4 11.a4 Ne4 12.h3 Bh5 13.g4 Bg6 14.d3 Nf6 15.Ne5 Qd6 16.a5 Qe6 (better 16...Rfb8!? 17.Bc3 Nd7 18.Ng6 Qg6+/-) 17.f4+- (17.Ng6?! fg6 18.Re1 Ra6+/-) 1-0. DEFFM – GuestSGWR, freechess.org, 2021.

6.Be2 Nf6 7.d3 (7.Nf3 Nbd7=) 7...Nbd7=+ 8.Bg3 Qa5 9.Qd2 Qd2 10.Kd2 Be7 11.Nf3 0-0 12.h3 Nc5 13.Nd4 Bd7 14.Be5 Ra6 15.a3 Rfa8 16.c3 g6 (16...b6 17.Kd1=+) 17.Rd1 Ne8 18.Ra2 Na4 19.Bf3 f6 20.Bh2 Nb6 21.Ke1 Kf7 22.Nc2 h5 (22...Be6 23.Nb4 Ra5 24.Re2=) 23.Nb4 Ra4 24.Rad2 Be6 25.Kf1 Bd6 (25...Ra3 26.Na3 Ra3 27.Rc1=) 26.Kg1 Bh2 27.Kh2 Nd6 28.Nc2 Kg7 29.Nd4 Bf7 (29...Re8 30.Rb2=) 30.g3 (30.Rb2 Nd7=) 30...Nd7 31.Be2 (31.Rb2 Ne5 32.Be2 Re8=) 31...g5 32.Re1 (32.Rb2 Bg6=) 32...Rh8 (32...c5 33.Nc2=+) 33.Nb3 (33.Bd1 Raa8=) 33...Re8 (33...h4 34.g4=) 34.Red1 (34.Bd1 h4=) 34...Ne5 (34...h4 35.g4=+) 35.Nd4 (35.Nc5 Raa8=) 35...Bg6 36.Ra2 c5 (36...g4 37.Rb2=+) 37.Nc2 b6 38.Kg1 Rf8 (38...Bf7 39.d4 Nec4 40.Nd2=+) 39.Ne1 (better 39.d4!? Nef7 40.Kh2=) 39...b4=+ 40.f4 Nd7 0–1. Knighton,Robert (1795) – Komaromi,Gabor (2110), FICGS, 2013.

6.Nf3 Ne7 7.Be2 Nf5 8.0-0 Nd7 9.Bb2 Be7 10.d3 Bc5 (10...0-0 11.e4 de4 12.de4=) 11.e4 (11.c4 bc4 12.dc4 Qb6+-) 11...de4= 12.de4 Nh4 13.Qd3 (13.Nh4 Qh4 14.Bg7 Rg8=) 13...Nf3 14.Qf3 Qg5 15.Qg3 (15.Rd1!?=) 15...Qg3=+ 16.hg3 0-0 17.Nd2 Re8 18.Rfd1 Nb6 19.Nb3 Bf8 (19...Re4? 20.Nc5 Re8 21.a3+-) 20.Bd4 Na4 21.e5 (21.f3!?=) 21...Bf5 22.c3 Ba3 23.g4 Be6 0–1. onur604 (2320) – prochamp27 (2045), lichess.org, 2020.

6.Nf3 Nf6 7.d4 Nbd7 8.Bd3 Ne5 9.de5 Nd7 10.e4 g6 (10...de4!? 11.Be4 g6-/+) 11.ed5= Bg7 12.dc6 (12.Qe2 0-0 13.0-0 Re8 14.dc6 Ne5 15.Ne5 Be5-/+) 12...bc6=+ 13.0-0 0-0 (13...Be5?! 14.Qe2 f6 15.Be4=) 14.Nd4 Ne5 15.c3 (15.Be2 Qf6 16.c3 Rd8-/+) 15...c5 16.Be4 Ra4 17.Bc2 cd4 18.Ba4 ba4 19.cd4 (19.Qa4 Nf3! 20.gf3 Qg5 21.Kh1 Qf4 22.Qa8 Be5 23.Qc8 Qh2) 19...Bg4 20.f3 (20.Qd2 Nc4 21.Qb4 Qd4 22.Nc3 Qc3 23.Qc3 Bc3 24.Rac1-+) 20...Nf3! 21.gf3 (21.Rf3 Qd4 Double attack; 21.gf3 Qd4 Double attack) 21…Bh3 (21...Bh3 22.Nc3 Bd4 23.Kh1 Bf1 24.Qf1 Bc3-+; 21...Qd4?! 22.Qd4 Bd4 23.Kg2-+; 21...Bd4?! 22.Kg2 Be6 23.Na3-+) 0-1. DEFFM – GuestRYGZ, freechess.org, 2021.

6.Nf3 Nf6 7.d4 Bf5 8.Bd3 Bd3 9.Qd3 Nbd7 10.0-0 Ne5 11.Ne5 Bd6 12.f4 Ne4 13.Nd2 f6 14.Ne4 de4 15.Qe4 fe5 16.fe5 Be7 17.c3 g6 18.Qf4 (18.Qf3-/+) 18...Rf8 (better 18...Qd5!?-/+) 19.Qh6= Qd5 20.Qh7 Qe4 (20...Rf1 21.Rf1 Ra2 22.Qg6 Kd7 23.Qf5 Kd8 24.e4=) 21.Rf8+= Bf8 22.Qb7 Ra2 (better 22...Rd8!? 23.Kh1 Be7+=) 23.Qb8+- (23.Ra2?! Qb1 24.Kf2 Qa2 25.Kf3 Qc4=) 23...Kd7 24.Ra2 Qb1 25.Kf2 Qa2 26.Kg3 Bh6?? (better 26...Be7 27.Qb7 Kd8 28.Qc6 Qe2 29.Qb6 Kc8 30.Qg6 Qe3 31.Kg4 Kd7+-) 27.Qd6+- (27.Qd6 Kc8 28.Qc6 Kd8 29.e6+- (29.Qg6?! Be3 30.Qb6 Ke7 31.Qc5 Kf7 32.Qc7 Ke8 33.Qc6 Ke7+-)) 1-0. onur604 (2320) - pechemerguez (2320), Casual Rapid game, 2021.

6.f4 Nd7-/+ 7.Nf3 Ne5 8.fe5 f6 9.d4 (9.Nd4!? Qc7 10.e6-/+) 9...fe5-+ 10.Ne5 Qh4 11.g3 Qe4 12.Qf3 Qf3 13.Nf3 Nf6 14.Bd3 Bb4 15.c3 Bd6 16.0-0 0-0 17.Nbd2 Bh3 18.Rf2 Rfe8 19.Ng5 (19.Re1 Ra2 20.e4 b4 21.cb4 Bb4-+) 19...Re3 20.Bh7 Nh7 21.Nh3 Rc3 22.Nf3 b4 (22...Rca3 23.Nh4-+) 23.Rb1 Nf6 24.Nhg5 Ne4 25.Re2 Re8 (25...Rca3 26.Ne4 de4 27.Ng5 Ra2 28.Ra2 Ra2 29.Ne4-+) 26.Nh4 1-0. onur604 (2320) - achyleus (2230), Casual Rapid game, 2021.

7.Bb2 Ngf6 8.Be2 Bd6 9.d3 0-0 10.0-0 Qe7 11.Nbd2 Ne5 (11...b4 12.c4=+) 12.c4 (12.Be5 Be5 13.Ne5 Qe5=) 12...bc4 13.dc4 Bf5 (13...Nf3 14.Bf3 Be6 15.cd5 Nd5 16.Ne4=+) 14.cd5= Nf3 (14...Nd5? 15.e4+-) 15.Bf3 cd5 (15...Nd5? 16.e4 Qc7 17.h3 Bh3 18.ed5+-) 16.Qb3 Rfd8 17.Bf6 (17.g3 Ne4 18.Rfd1 Nd2 19.Rd2 Be4 20.Be4 de4=) 17...Qf6=+ 18.Bd5 Ra3 19.Qb7 Be5?? (better 19...Rd3 20.Ne4 Bh2 21.Kh2 Qh4 22.Kg1 R3d5=) 20.Nc4+- Ba1 21.Na3 Be5 22.Nc4 Rb8? (better 22...Bc3+-) 23.Qf7! (23.Qf7 Qf7 24.Bf7 Kf7 25.Ne5 Kf6 26.Nc6+-) 1-0. onur604 (2320) - achyleus (2230), Casual Rapid game, 2021.

7.d4 Ne5=+ 8.Ne5 Bd6 9.f4 Nh6 10.Bd3 Qh4 11.g3 Qh3 12.Bf1 (12.Qe2 0-0-/+) 12...Qe6-/+ 13.Bd3 f6 14.Qh5 (14.Nf3 0-0 15.Kd2 Qh3-/+) 14...Kd8 15.f5 (better 15.0-0-+) 15...Qe8 16.Qe8 Re8 17.Nf3 Re3 (worse 17...Nf5 18.Kf2 Ne3 19.Bh7 Ng4 20.Kg1-+) 18.Kf2 Ng4 19.Kg2 Rd3! 20.cd3 Ne3 (20...Bf5?! 21.Re1-+) 21.Kf2 Nc2 (21...Nf5?! 22.Nbd2-+) 22.Nbd2 Na1 23.Ra1 Bf5 24.Nb3 Bb4 25.Nc1 Bc3 (25...Ba3 26.Ke3-+) 26.Rb1 b4 27.Kg2 Kc7 28.Nh4 (28.h3 Be6-+) 28...Bg4 29.Nf3 Re8 30.h3 (30.Nh4 g5 31.Nf3 Bf3 32.Kf3 Re1-+) 30...Bf3 31.Kf3 Re1 0-1. DEFFM – GuestRYGZ, freechess.org, 2021.

7.Bf4 Be7 8.Be2 Ngf6 9.0-0 Nb6 10.Nd4 0-0 11.d3 Re8 12.c3 Bd7 13.Qc2 (13.Qb3 Bc5=) 13...Na4 14.Bf3 c5 15.Ne2 Bf5 16.e4 Bg6 17.e5 Nd7 18.Qd2 (18.Qb3 Ndb6 19.Qb5 c4 20.dc4 Bd3=) 18...h6 (18...Nab6 19.Re1=) 19.Re1 b4 20.cb4 cb4 21.e6 (21.Nd4!?=) 21...fe6=+ 22.Nd4 Qb6 23.Ne6 Bf6 24.Bd5 (24.d4 Bf7 (24...Re6?! 25.Bd5 Rae8 26.Re6 Re6 27.h3-/+) 25.Nc7 Re1 26.Qe1 Qd4-+) 24...Ba1 25.Bc7 Qa7 (25...Bc3!? 26.Nc3 bc3 27.Qf4-+) 26.Nf8-/+ Bf7 (26...Kf8 27.Qf4 Bf6 28.Bd6 Re7 29.Be7 Ke8 30.Bf6 Qe3 31.Qe3 Be4 32.Qe4 Ne5 33.Qe5 Kd7 34.Qe7 Kc8 35.Qb7) 27.Bf7 Kf7 28.Nd7 b5 29.Rc1? (29.Ne5 Kg8 30.a3-+) 29...Rac8-+ 30.Qf4 Kg8 31.g3 (31.Kf1 Nc3 32.Qg4 Na2-+ (worse 32...Qc7 33.Nf6 Kh8 34.Ne8 Re8 35.Qh5-+; 32...Rc7?! 33.Nf6 Kh8 34.Qg6 gf6 35.Qe8 Kg7 36.Qe6-+)) 31...Nc3 32.Nf6 gf6 33.Nc3 bc3 34.Qg4 Kh8 35.Bf4 (35.Qh5 Qc7 (35...Rc7?! 36.Qe8 Kg7 37.Ra1=) 36.Qh6 Kg8 37.Ra1 Qg7-+) 35...Bb2 (35...Qa2?! 36.Bh6 Qg8 37.Qg8 Kg8 38.Ra1-+) 36.Rc2 Qh7 37.Qh4 Qf5 38.Qh6 (38.Kg2 Re6 39.Qh6 Kg8-+) 38...Kg8 39.Qh4 Re1 (39...Rcd8 40.f3-+) 40.Kg2 Kf7 41.f3 Qd3 42.Qh5 Ke7 43.Rf2 c2 44.Qg4 Bd4 45.Qc8 Bf2 (45...Bf2 46.Kh3 Qh7 47.Kg4 Qg6 48.Kh4 Bg3 49.Bg3 c1Q 50.Qc7 Qc7 51.Bc7 Rg1 52.Bg3 Qg5 53.Kh3 Qh5 54.Bh4 Qf5) 0-1. onur604 (2320) - PrawnH5 (2440), Casual Rapid game, 2021.

7.Bg3 Nb6 8.Be2 Nf6 9.0-0 Be7 10.d3 0-0 11.Nd4 Bd7 12.c3 c5 13.Nb3 Re8 14.Qc2 Bf5 15.N1d2 Bg6 16.a3 (16.Rfb1 Nc4 17.Qd1 Na3=+) 16...Na4 17.Nc1 Nh5 18.Be5 Bf8 19.Nf3 (19.f4 f6 20.f5 Bf7 (worse 20...Re5 21.fg6 hg6 22.g4+=) 21.Bh5 Bh5=+ (21...fe5?! 22.Bf7 Kf7 23.Rb1=)) 19...f6-/+ 20.Bg3 Qd7 (20...Qa5 21.Na2 Ng3 22.hg3=+) 21.Bh4=+ Be7 (21...Bf7 22.Nd2=) 22.Nd2= Bf7 23.Na2 g5 24.Qd1 Ng7 25.Bg3 d4 26.Qc2 h5 27.h4 (27.h3!?=) 27...gh4-/+ 28.Bf4 (worse 28.Bh4 Nf5 29.Nf3 de3-+) 28...Rec8 (28...h3 29.gh3 Qh3 30.Bf3-/+) 29.Ne4 h3 30.gh3 Qh3 31.Rfb1 (31.cd4 Nf5 32.Bd1-+) 31...f5-+ 32.Nd6 (32.Ng3 h4 33.Nh1 Bd5-+) 32...Rc6 (32...Bd6!? 33.Bd6 Rc6 34.Bg3-+) 33.Nf7 Rg6 34.Bg3 de3 (34...Kf7?! 35.Bf1 (35.cd4? f4 36.Bf1 Qf5-+) 35...Qg4 36.Be2-+) 35.Nh6 Kh7 (35...Kh7 36.Bg4 fg4-+ (36...Rg4?! 37.Ng4 Qg4 38.Rb5-+)) 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bg3 Ngf6 8.Bd3 Ne4 9.0-0 Ng3 10.fg3 g6 11.Nc3 (11.c3 Bg7=+) 11...Bg7-/+ 12.a3 0-0 13.Nd4 Ne5 14.Be2 Qe7 Exerts pressure on the isolated pawn 15.Qc1 Bd7 16.Nb3 (better 16.Qb2!?=+) 16...Nc4-+ 17.Bc4 dc4 (17...Bc3!? 18.dc3 bc4-+) 18.Nd4-/+ Ra5 19.Rf4 (19.Ra2 Rfa8 20.Nb1 b4-+) 19...Rfa8 20.Re4 Qd6 21.Rb1 Ra3 22.Nce2 (22.g4 b4 23.Nce2 b5-+) 22...c5 23.Nf3 b4 (23...g5 24.Ng5 Qd5 25.Re7-+) 24.Rf4 Bc6 25.Qd1 (25.Ng5 Qe7 26.Nf3 Ra1-+) 25...b5 (25...Ra1!? 26.c3 Rb1 27.Qb1 Bf3 28.Rf3 Qd2 29.Rf2-+) 26.g4 (26.Qc1 Ra2-+) 26…Rd8 0-1. DEFFM – GuestLHHW, freechess.org, 2021.

7.Bg3 Ngf6 8.Be2 Ne4 9.0-0 Ng3 10.hg3 Bd6 11.d4 Qf6 (11...0-0!?-/+) 12.Nbd2=+ Nb6 13.e4 Bb4 14.e5 (14.ed5 Nd5 15.c4 bc4 16.Bc4 0-0=+) 14...Qh6 15.a3 (15.Rb1 Be7-/+) 15...Bc3 16.Ra2 0-0 17.Nb1 Ba5 18.c3 Bf5 (18...Na4 19.Qc2-/+) 19.Bd3 Bg4 20.Qc2 (20.Qb3 Rae8-/+) 20...Nc4 (better 20...Na4!?-/+) 21.a4=+ ba4 22.Bc4 dc4 23.Ra4 b5 24.Ra2 Bb6 (24...Qh5 25.Ra3 Bc7 26.Ra8 Ra8 27.Nbd2=) 25.Ra8 Ra8 26.Nbd2 Qe6 27.Qb2 Bf5 28.Ng5 (28.Ra1 Ra1 29.Qa1 c5=+) 28...Qd5 29.Re1 h6 30.Nge4 Ra4 31.Nd6 Bg6 32.Ra1 Ra1 33.Qa1 c5 34.Nb5 cd4 35.Nd4 Bd3 36.N2f3 Be4 37.Qa6 Qc5 38.g4 Kh7 39.Qb5 Qc7 (39...Qb5 40.Nb5 Bc6 41.Nd6=) 40.e6 fe6? (better 40...Bd4!? 41.Nd4 fe6 42.Ne6 Qb7 43.Nf8 Kg8 44.Qb7 Bb7+-) 41.Ne6+- Qd6 (41...Qb7 42.Qe8 Bf3 43.g5 (43.gf3?! Qf3 44.Nf8 Kh8 45.Nd7 Kh7 46.Nb6 Qg4 47.Kh2 Qh4 48.Kg2 Qg4 49.Kf1 Qh3 50.Kg1 Qg4 51.Kf1 Qh3 52.Kg1 Qg4=) 43...Bf2 44.Kf2 Qb2 45.Kf3 Qc3 46.Ke4 Qc2 47.Kd5 Qd3 48.Kc5 Qf5 49.Kc4 Qc2 50.Kb4 Qb2 51.Kc5 Qa3 52.Kb6 Qe3 53.Kb7 Qb3 54.Kc8 Qc3 55.Nc7+-) 42.Neg5! hg5 43.Ng5 Kg6 44.Ne4 Qd1 45.Kh2 Bc7 46.g3 Qf3?? (better 46...Qg4 47.Qc4 Qd7+-) 47.Qh5 1-0. onur604 (2320) - norb3rgh (2215), Casual Rapid game, 2021.

6.Nf3!?+=.

7.a4 ba4-/+ 8.c4 dc4 9.Ra4 Ra4 10.Qa4 b5 11.Qa8 Qc7 12.Be2 Qb7 13.Qa1 Ngf6 14.Nf3 Be7 15.0-0 Nc5 16.Be5 0-0 17.Nd4 Bd7 18.Qb2 Ra8 19.f3 Na4 20.Qc2 Nd5 21.Nf5 Bf5 22.Qf5 Qa7 23.Bd4 Bc5 24.Nc3? (better 24.Bc5 Qc5 25.Re1-+) 24...Nac3 25.Bc3 Be3! 26.Kh1 (26.de3 Qe3 Double attack (26...Nc3 Deflection; 26...Nc3 Overloading)) 26...Bd4 27.Bd4 Qd4 28.Rd1 Nf4 29.Bf1 Rd8 30.g3 Ne6 31.Qc2 g6 (31...Qf2!? 32.f4-+) 32.Kg2 Nc5 33.Be2 Nd3 34.Bd3 (34.Rf1 Nb4 35.Qb1 Qd2-+) 34...Qd3 (34...cd3?! 35.Qc6 Qd5 36.Qd5 Rd5 37.f4-/+) 35.Qd3 Rd3 (35...cd3?! 36.Rc1-+) 36.Kf2 (36.Rc1 Rd2 37.Kh3 Kg7-+) 36...c3 37.Ke2 (37.Rc1 cd2 38.Rd1 Rd8-+) 37...Rd2 38.Rd2 cd2 39.Kd2 Kf8 40.Kc3 c5 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Ne2 Nc5 8.Ng3 Nf6 9.Nh5 Nh5 10.Qh5 Qd6 11.Be2 Qg6 12.Qe5 (12.Qg6!? hg6 13.h3=) 12...Ne6-/+ 13.0-0 Qc2 14.Rc1 Qg6 15.Bh5 Qg5 16.f4 Qe5 17.Be5 Nc5 18.Bd4 Nd3 19.Rf1 b4 20.Be2 Bf5 21.h3 b5 22.g4 Be4 23.Rd1 Kd7 24.Bd3 Bd3 25.Bb2 h5 26.g5 f6! 27.gf6 gf6 28.Bf6 Rg8 29.Kf2 Ke6 30.Bb2 Kf7 (30...Be7 31.f5 Kf5 32.Bf6 Bf6 33.Rf1 Bh4 34.Kf3 Raf8 35.e4 Ke5 36.Ke3 Rg3 37.Rf3 Rgf3) 31.a3 (31.Rc1 Be7 32.e4 c5-+) 31...b3 (better 31...Be7 32.Rg1 Bh4 33.Rg3 Bg3 34.Kg1 Bf4 35.Bg7 Rg7 36.Kf2 Bg3 37.Kf3 Rf8 38.e4 Ke6 39.Ke3 de4 40.ab4 Bf2) 32.Nc3 Bc2 (32...Be7!? 33.Rg1-+) 33.Rg1 Rg1 34.Kg1 Be7 35.a4 ba4 36.Na4 (36.Ra4 Ra4 37.Na4 Bf5-+) 36...c5 37.Nc3 Ra1 38.Ba1 Bf6 Black plans d4 39.Bb2 d4 (39...Bf5 40.Kg2-+) 40.ed4 (40.Na4 de3 41.de3 Bf5-+) 40...cd4 (40...Bd4!? 41.Kg2-+) 41.Nb5 d3 (41...Ke6!?-+) 42.Nd6-/+ Ke6 (42...Ke7 43.Nc4-/+) 43.f5=+ Kd6 44.Bf6 Kd5 45.Bb2 Kd6 46.Kf2 Ke7 47.Ke3 Kf7 48.f6 Bb1 49.Ke4 Bc2 50.Kf5 Bd1 51.Ke4 Bc2 52.h4 Bb1 53.Bd4 Bc2 54.Kd5 Bd1 55.Kc4 Bc2 56.Bc3 Ke6 57.Bd4 Kf7 58.Kd5 Bd1 59.Kd6 Bg4 60.Bc3 Bd1 61.Kd7 Bg4 62.Kd8 Bd1 63.Kd7 ½-½. DEFFM – GuestGFSM, freechess.org, 2021.

7.Nf3 Nb6 8.Bd3 Nf6 9.Be5 Nfd7 10.Bg3 Be7 11.Be2 0-0 12.d3 Bf6 13.d4 Nc4 14.0-0 Ndb6 15.h3 Bf5 16.Bd3 Bg6 17.Bg6 hg6 (17...fg6 18.Re1=+) 18.c3= Qd7 19.Qe2 Ra4 20.Rc1 Rfa8 21.Rc2 Qf5 22.Ne1 Be7 23.Nd2 Na3 24.Rb2 Bf8 25.Bh2 Qe6 26.Ndf3 Nac4 27.Rc2 Na3 28.Rcc1 Nac4 29.Rc2 Na3 30.Rcc1 Be7 31.Nd2 R4a7 32.Nd3 Bf8 33.Nb3 Na4 34.Nd2 Nc4 35.Rc2 Na3 36.Rcc1 Re8 37.Ne5 Nc4 38.Rc2 Ne5 39.Be5 Qf5 40.Nf3 f6 41.Bc7 g5 42.Bg3 Nb6 43.Ne1 Nc4 44.Nd3 b6 45.Nb2 Na3 46.Rcc1 Rea8 47.Qd1 Qd7 48.Qe2 Qf5 49.Nd3. PERIERA – Kinnmu, internet, 2022.

7.Nf3 Ngf6 8.d3 Nb6 9.Be5 Be7 10.Be2 0-0 11.0-0 Re8 12.c3 h6 13.Nd4 Nfd7 14.Bg3 Bf6 15.Qc2 Nf8 16.Nd2 b4 17.a4 (17.N2b3 bc3 18.Qc3 Qe7–/+) 17...bc3 18.N2f3 (18.N2b3 Na4 19.Nc5 b5 (worse is 19...Nc5 20.Ra8 Nce6 21.Nf5+/–) 20.Na4 ba4 21.Ra4 Ra4 22.Qa4 Bd7-+) 18...Nbd7 (18...Bd7 19.Rfb1–/+ (19.Qc3? Na4 20.Qc2 c5 21.Ra4 Ra4 22.Qc5 Qa5 23.Qa5 Ra5-+)) 19.Ra2 (19.Qc3? c5 20.Rac1 Qb6-+) 19...Qa5 20.Nb3 Qa7 21.d4 c5 22.Bb5 b6 23.Rb1 Re6 (23...Ba6 24.Bc6 Rac8 25.Bd5+=) 24.Qc3 (24.a5 c4 25.Nc1 ba5+=) 24...g6 (24...Ba6!? 25.Nbd2 Bb5 26.Rb5 Ng6+=) 25.Qd2 Bb7 26.Nc1 Qa5 27.Qd1 Bg7 28.Rc2 c4= 29.Ne2 Nf6 30.Nc3 Ne8 31.Ne5 f6 32.Nd7 Nd7 33.Bd7+/– Re7 34.Rb5 Qa7 35.Bg4 f5 36.Bf3 (36.Bf3 Nf6 37.Qb1+/–) 1–0. Taulien,Hans_Juergen (2350) – Jenull,Marco (2170), remoteschach.de, 2005.

7.Nf3 Ngf6 8.d4 Nb6 9.Bd3 Bd6 10.0-0 0-0 11.c3 Re8 12.Qc2 Ne4 13.Ne5 (13.Nbd2 Nc4-/+) 13...Qh4 14.Nd2 (14.Nf3 Qh5-/+) 14...Nd2 15.Qd2 Nc4 16.Bc4 bc4 (16...Be5?! 17.g3 Qd8 18.Bd3=+) 17.f4 Bf5 18.Qe1 Qe7 19.Qf2 f6 20.Rfe1 Ra4 21.Nf3 b5 22.Qd2 Rea8 23.a3 Ba3 24.Ra3 Ra3 25.Ba3 Qa3 26.Rc1 Qb3 27.Qe1 Qb2 28.Qd2 Qd2 29.Nd2 Ra2 30.Nf3 Be4 31.Ne1 h5 32.h3 Kh7 33.Kf1 g5 34.fg5 fg5 35.Nf3 Kh6 36.Kg1 (36.Ne1 g4 37.hg4 hg4-+) 36...g4 37.hg4 hg4 38.Ne1 g3 39.Kf1 Kg5 40.Rd1 Kg4 41.Kg1 Re2 42.Kf1 (42.Rc1 b4 43.cb4 c3-+) 42...Re3 (better 42...Rf2 43.Kg1 b4 44.cb4-+) 43.Rc1 Kf4 44.Kg1 Re2 0-1. DEFFM – GuestGYGM, freechess.org, 2021.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 Nb6 10.d3 0-0 11.Be5 Be5 12.Ne5 Qe7 13.Nf3 Ra6 14.c3 Bf5 15.Nd4 Bg6 16.Re1 Na4 (16...b4 17.Nf3=) 17.Qc2 c5 18.Nb5 c4 19.Qd2 Nc5 20.dc4 Nb3 21.ab3 Ra1 22.Bd3 dc4 23.bc4 Ne4 24.Qe2 (24.Qc2 Rfa8 25.Re2 Nf2 26.Kf2 Qh4 27.Kg1 Rb1 28.Qb1 Bd3=+) 24...Rfa8-+ 25.Qf1 R8a2 26.Be4 Qe4 27.Rd1 h6 28.N1a3 Rd1 29.Qd1 Qh4 30.Qe1 Be4 31.Qf1 Bd3!! 32.Qe1 (32.Qd3 Qf2 Mate attack) 32...Qg5 Threatening g3 33.h3? (33.g3-+) 33...Be4 34.g4 Qh4 35.Nd6 (35.Qf1 Ra1!! 36.Nb1 Rb1 37.Qb1 Bb1 38.Kg2 Be4 39.f3-+) 35...Bf3 (35...Ra3?! 36.Ne4 Qh3 37.Qd1-+) 36.Qf1 (36.Nab5 Qh3 37.Nb7 Qg2) 36...Ra1!! 37.Nb1 (37.Qa1 Qh3 Mate attack) 37…Rb1! (37...Rb1 38.Nf5 Rf1 39.Kf1 Qh3 40.Ke1 Qh1 41.Kd2 Qd1) 0-1. DEFFM – GuestNYYZ, freechess.org, 2021.

7.Nf3 Ngf6 8.Be2 Bd6 9.d3 Nb6 10.0-0 Qe7 11.e4 Na4 12.Bd4 de4 13.de4 Ne4 14.Bg7 (14.Bd3 f5-/+) 14...Rg8-/+ 15.Bd4 (15.Bd3 Bh3! 16.Be4 Rg7 17.Re1 Bg2 18.Qd4-+) 15...Bh3-+ 16.g3 0-0-0 (better 16...Bf1!? 17.Bf1 Bc5-+) 17.Re1-/+ f5 (17...Bb4 18.c3 Nac3 19.Qc2 Ne2 20.Re2-/+) 18.Bd3 (18.Qc1!?=) 18...c5-/+ 19.Be3 (19.Bb5 Nb6 20.Bb2 Bg3 21.Qd8 Qd8 22.fg3-+) 19...Qf6 Black prepares the advance f4 20.Na3 (better 20.Nbd2 Nec3 21.Qc1-+) 20...Nac3 21.Qc1 f4 22.Be4 Ne4 23.Rf1 (23.Ng5 Ng5 24.Rf1 Nf3 25.Kh1 fg3 26.fg3 Bg3 27.Bd4 Bg2 28.Kg2 Nh4 29.Kh1 Qc6 30.Rf3 Qf3 31.Kg1 Qg2) 23...fe3 (better 23...fg3 24.fg3 Ng3-+) 24.Qe3 Rde8 25.Nb5 Ng3! 26.Qe8 (26.fg3 Deflection from e3 26...Re3) 26...Re8 27.fg3 Re2 28.Nfd4 Rg2 29.Kh1 Rh2! 30.Kh2 Bf1 31.Nd6 Qd6 32.Rf1 32…Qd4 (32...Qd4 33.Rf8 Kc7 34.Rf7 Kb6-+) 0-1. onur604 (2320) - DuxCarnorum (2180), lichess.org, 2020.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.d3 A) 10...Re8 11.c4 A1) 11...dc4 12.dc4 bc4 (12...b4 13.Qc2 b6 14.Rd1 Qe7=+) 13.a4 Qe7 14.Bc4 c5=+; A2) 11...c5 12.Bb2 bc4 (12...Qe7 13.cd5 Nd5 14.Qb3 Nc7=) 13.dc4 Nb6 14.cd5 Nfd5=; A3) 11...b4 12.Nbd2 c5 (12...dc4 13.Nc4 Bc7 14.a4 c5=; 12...Qe7 13.cd5 Nd5 14.Ne4 c5=; 12...Qc7 13.Qc2 c5 14.Bf6 Nf6=; 12...b6 13.cd5 Nd5 14.Ne4 Be7=; 12...b5 13.cb5 c5 14.Bb2 Qb6=) 13.Bf6 Nf6 14.d4 b6=+; A4) 11...bc4 12.dc4 dc4 (12...c5 13.Bb2 Ne5 14.cd5 Qc7=; 12...b6 13.Nbd2 c5 14.Bb2 Bb7=; 12...Qe7 13.cd5 Nd5 14.Qd2 c5=+ –0.38/9; 12...Nc5 13.Qc2 dc4 14.Bc4 Nfe4=+) 13.a4 Qe7 14.Bc4 c5=+; B) 10...b4 11.c4 B1) 11...Qe7 12.Nbd2 dc4 (12...c5 13.Bb2 Re8 14.Qb3 dc4=; 12...Re8 13.Qc2 c5 14.Bf6 Nf6=; 12...Rd8 13.cd5 Nd5 14.Ne4 c5=; 12...Bc7 13.Qc2 dc4 14.dc4 c5=; 12...Qe6 13.cd5 Nd5 14.Ne4 Be7=) 13.Bf6 Nf6 14.Nc4 Bc7=+; B2) 11...b6 12.Nbd2 Qe7 (12...Re8 13.cd5 Nd5 14.Ne4 Be7=; 12...Bb7 13.cd5 Nd5 14.Qc2 c5=+; 12...dc4 13.Nc4 Bc7 14.Bb2 c5=; 12...c5 13.Bb2 Bb7 14.a3 ba3=; 12...Bc7 13.cd5 Nd5 14.Qc2 c5=) 13.cd5 Nd5 14.Ne4 Bc7=+; B3) 11...dc4 12.dc4 Qe7 (12...b6 13.Qc2 Re8 14.Rd1 Qe7=+; 12...Qc7 13.Qb3 c5 14.Bb2 Ne5=+; 12...Re8 13.Qc2 b6 14.Rd1 Qe7=+) 13.Qc2 b6 14.Rd1 Rd8=+; B4) 11...bc3 12.Nc3 b5 (12...Ne8 13.Nb1 b6 14.Qc2 Qc7=; 12...Qe7 13.Qc2 Re8 14.Rfb1 c5=+; 12...Re8 13.a4 Qe7 14.Qc2 c5=+; 12...c5 13.Nb5 Bb8 14.Bc3 Re8=; 12...Qa5 13.Qb3 Ne8 14.Nb1 b5=) 13.e4 Re8 14.ed5 Nd5=+; C) 10...Qe7 11.Nbd2 C1) 11...Re8 12.c4 bc4 (12...b4 13.cd5 Nd5 14.Ne4 c5=; 12...dc4 13.dc4 b4 14.Qc2 c5=+) 13.dc4 c5 14.Bf6 Nf6=+; C2) 11...b6 12.c4 dc4 (12...bc4 13.dc4 c5 14.Bb2 Bb7=) 13.dc4 b4 14.Qb1 c5=+; C3) 11...b4 12.c4 bc3 (12...dc4 13.Bf6 Nf6 14.Nc4 Bc7=+; 12...c5 13.Bb2 Re8 14.Qb3 dc4=; 12...Re8 13.cd5 Nd5 14.Ne4 c5=) 13.Bc3 Re8 14.Re1 b5=+; C4) 11...c5 12.Bb2 Qe6 (12...Nb6 13.Bf6 Qf6 14.d4 c4=+; 12...Re8 13.c3 Ne5 14.c4 bc4=+; 12...b4 13.a3 ba3 14.Ba3 Re8=; 12...Rd8 13.d4 c4 14.c3 Ne4–/+) 13.d4 c4 14.Nb1 Re8–/+.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.Re1 b4 11.Qc1 A) 11...Re8 12.c4 dc4 (12...bc3 13.Nc3 c5 14.Nb5 Be7=; 12...c5 13.Bb2 dc4 14.Qc4 b5=+; 12...Qe7 13.cd5 Nd5 14.Qb2 N5b6=+; 12...Qa5 13.Bb2 dc4 14.Qc4 Qf5=+; 12...Ra5 13.cd5 Nd5 14.a3 N7f6=+) 13.Qc4 Ra5 14.Qd3 Qe7=+; B) 11...b5 12.c3 bc3 (12...c5 13.Bf6 Qf6 14.Bb5 Rb8=; 12...b3 13.Qb2 ba2 14.Ra2 Ra2=+) 13.Qc3 Bb7 14.a3 Qe7=+; C) 11...c5 12.Bb2 Re8 (12...Ra5 13.c3 c4 14.d3 b5=; 12...Qc7 13.a3 Qb6 14.ab4 Ra1=; 12...Qa5 13.a3 Qb6 14.ab4 Ra1=; 12...c4 13.a3 Re8 14.ab4 Ra1=; 12...Qb6 13.c4 bc3 14.Nc3 Re8=) 13.a3 Qb6 14.c4 bc3=; D) 11...Qe7 12.c4 c5 (12...bc3 13.Nc3 Re8 14.Qc2 c5=+; 12...dc4 13.Qc4 c5 14.Bb2 b5=+; 12...Rd8 13.cd5 Nd5 14.d3 Re8=+; 12...Re8 13.cd5 Nd5 14.Qb2 N5b6=+; 12...b6 13.Bb2 dc4 14.Qc4 Nc5=+) 13.Bf6 Nf6 14.d4 b5–/+.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.Re1 b6 11.Nh4 A) 11...Nc5 12.Nf3 Re8 (12...Qe7 13.d3 Re8 14.Qd2 Ncd7=+; 12...Bf5 13.d3 Re8 14.Qd2 Ncd7=+; 12...Bg4 13.Ne5 Be2 14.Re2 Qe8=+; 12...Ne6 13.Be5 Be5 14.Ne5 Qd6=+; 12...Bd7 13.Ne5 Re8 14.f4 Ne6=+) 13.d3 Ne6 14.Be5 Ng5=+; B) 11...Ne5 12.Nf3 Nf3 13.Bf3 Re8 14.d3 Be6=+; C) 11...Qc7 12.f4 Bc5 (12...Re8 13.Nf5 Bc5 14.c3 g6=+; 12...Rd8 13.Nf5 Bc5 14.c3 Bd4=+; 12...Bb4 13.Nf5 Bc5 14.c3 Bd4=+; 12...Be7 13.Nf5 Bc5 14.c3 Re8=+; 12...Ra5 13.Nf5 Bc5 14.c3 Re8=+) 13.Nf5 Bd4 14.Nd4 Re8=+; D) 11...Ng4 12.g3 Nh6 (12...Ndf6 13.f3 Ne5 14.f4 Neg4=+; 12...Ngf6 13.Nf5 Bc7 14.g4 Be5=+) 13.Qc1 Nc5 14.Nf3 Re8–/+.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.Re1 Nb6 11.a3 (11.Be5 Ne4 (11...Re8 12.Bd6 Qd6 13.d4 Bg4 14.Ne5 Be2=+; 11...Bg4 12.Bd6 Qd6 13.Nd4 Be2 14.Qe2 Ra6=+; 11...Bf5 12.Bd6 Qd6 13.Nd4 Be4 14.f3 Bg6=+) 12.Bd6 Qd6 (12...Nd6 13.d4 Ne4 14.Nbd2 Bf5=) 13.c3 Qf6 14.Qc2 Na4=+) 11...Re8 (11...Bg4 12.Ng5 Bf5 (12...Be2 13.Qe2 Re8 14.Qf3 Nbd7=+; 12...Be6 13.Nc3 Na4 14.Na4 Ra4=+; 12...Bd7 13.Nf3 Re8 14.Ra2 Na4=+) 13.Nf3 Re8 14.Ra2 Na4=+; 11...Bf5 12.Be5 Re8 (12...Na4 13.Bd6 Qd6 14.Nd4 Be6=; 12...Be5 13.Ne5 Ne4 14.d4 Qf6=+; 12...Bg4 13.Bd6 Qd6 14.Nd4 Be2=+; 12...Ra4 13.Bd6 Qd6 14.Nd4 Be6=+; 12...Ra7 13.Bd6 Qd6 14.Nd4 Qd7=+) 13.Bd6 Qd6 14.Nd4 Be6=+; 11...Be6 12.d3 Na4 (12...Nbd7 13.Ng5 Qc7 14.f4 h6=+; 12...Nfd7 13.e4 Re8 14.c3 de4=+; 12...Re8 13.Qd2 Nbd7 14.Ng5 Qc7=+; 12...Ra6 13.c3 Re8 14.Qc2 Bf5=+; 12...Ra7 13.c3 Re8 14.Be5 Be5=+) 13.Nbd2 Nd7 14.Rb1 Ba3–/+) 12.Nc3 (12.Ra2 Na4 (12...Bd7 13.Nc3 Ba3 14.Qa1 Be7=+; 12...Bg4 13.Qc1 Na4 14.h3 Bd7–/+; 12...Bf5 13.d3 c5 14.Bb2 Na4=+; 12...Be6 13.d3 c5 14.Bf6 Qf6–/+; 12...b4 13.Qc1 Nc4 14.Bc4 dc4=+) 13.c3 Nd7 14.Qb3 c5–/+) 12...h6 (12...Ra3 13.Ra3 Ba3 14.Qa1 Bd6=+; 12...Nc4 13.Nb1 Bg4 14.h3 Be6–/+; 12...Bg4 13.h3 Bf5 14.Qc1 Nc4=+; 12...Ng4 13.h3 Nh6 14.Bb6 Qb6–/+; 12...Bf5 13.Qb1 Ra3 14.Ra3 Ba3–/+; 12...Be6 13.Qc1 Ne4 14.Nd1 Na4=+) 13.h3 (13.Qb1 Bg4 (13...Nh5–/+ 14.Qd1 Nc4=+) 14.d3 Ra3=+; 13.Qc1 Ne4 14.Nb1 Bd7=+) 13...Nh7 (13...Ra3 14.Ra3 Ba3=+) 14.Bb6 (14.Nb1 Ng5=+) 14...Qb6 15.Nd4 Nf6 16.Qc1 Bd7 17.Qb2 Qd8 18.Bd3 Qe7 19.Qb3 g6 (19...Ba3 20.Bf5-+) 20.Nf3 Ne4 21.Be4 de4 22.Nd4 Qh4 (better 22...Qe5 23.f4 Qc5–/+) 23.Kf1? (better 23.Rf1–/+) 23...Bh3-+ 24.gh3 Qh3 25.Ke2 Qg4 26.Kf1 b4! 27.Nd5 (27.ab4 c5 Double attack (27...c5 Decoy)) 27...cd5 28.Qd5 Rad8 29.Qb7 ba3 30.Rec1 (30.Reb1-+) 30...Re5 31.d3 Rb8 32.Qc6 Bc5 33.de4 Bd4 34.ed4 (34.Ra3 Qf3 35.Qc7-+) 34...Rh5 35.e5 Rh2 36.Ra3 (36.Re1 Rc8 37.Qe4 Qe4 38.Re4 Rh1 39.Kg2 Ra1-+) 36...Qf4 37.Rf3 Qc1 38.Ke2 Rh1 (38...Rh1 39.Qc3 Qd1 40.Ke3 Rd8-+) 0–1. Pierre – Kebab1, internet, 2019.

7.Nf3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.Re1 Re8 11.d3 A) 11...Qe7 12.e4 b4 (12...de4 13.de4 Bc5 14.Nbd2 Bd4=+; 12...Ng4 13.Nbd2 c5 14.Bb2 d4=+; 12...c5 13.Bb2 d4 14.c3 dc3=+; 12...b6 13.ed5 Nd5 14.c4 Nc7=+; 12...Qd8 13.ed5 Nd5 14.c4 bc4=+) 13.Bf1 de4 14.Nbd2 c5=+; B) 11...b6 12.c4 bc4 (12...dc4 13.dc4 b4 14.Qc2 Ra7=+; 12...b4 13.Nbd2 c5 14.Bb2 dc4=+; 12...Bb4 13.Nbd2 c5 14.Bf6 Qf6=; 12...Ba6 13.cd5 Nd5 14.Nbd2 Bb7=) 13.dc4 dc4 14.Bc4 b5=+; C) 11...b4 12.c4 c5 (12...dc4 13.dc4 b6 14.Qc2 Ra7=+; 12...bc3 13.a4 c5 14.Bc3 Qc7=+; 12...Qe7 13.Nbd2 c5 14.Bb2 b6=; 12...b6 13.Nbd2 c5 14.Bb2 dc4=+; 12...Qc7 13.Nbd2 c5 14.Bb2 Ng4=+ –0.38/9) 13.Bb2 Nb6 14.a3 Na4=+; D) 11...Nb6 12.Qc1 c5 (12...Bg4 13.h3 Bd7 14.Qb2 Na4=+; 12...Bd7 13.Nbd2 c5 14.Bb2 Na4=+; 12...Na4 13.Nc3 Nc3 14.Bc3 b4=+; 12...Bf5 13.Qb2 Na4 14.Qb3 Nd7=+; 12...Nfd7 13.a3 Nf6 14.Nc3 Bg4=) 13.Bb2 Na4 14.c3 Bf5=+.

7.d4 Ngf6 8.Bd3 Nb6 9.Nf3 Ne4 10.0-0 Be7 11.Be4 de4 12.Nfd2 f5 13.Qh5 g6 14.Qh6 Bg5 15.Qg7 Bf6 16.Qc7 (16.Qh6 Qe7 17.Bf4 Nd5-/+) 16...Qc7 17.Bc7 Nd5 18.Be5 Be5 19.de5 Nb4 20.Rc1 Ra2 (20...Na2?! 21.Nc3 Nc1 22.Ra8=) 21.Ra2 Na2 22.Rf1 Be6 23.f3 ef3 24.gf3 Ke7 25.Kf2 Nb4 26.Rc1 Ra8 27.Ke2 Ra2 28.Kd1 Nd5 29.Ke2 f4 30.ef4 Nf4 31.Ke3 Nd5 32.Kd4 (32.Ke2 Bf5 33.Ne4 Ra1-+) 32...b6 33.Ne4 c5 (33...Ra4 34.Kd3-+) 34.Kd3 c4 35.Kd2 b4 36.Nd6 c3 37.Kd3 g5 38.Kc4 (38.Ke4 Nf4 39.h4 Bd5 40.Kf5 Ne2 41.Nc8 Kd8-+) 38...h6 39.Ne4 (39.h4 Rb2 40.Kd4 gh4-+) 39...Ra8 (39...Rb2!? 40.Kd4-+) 40.Rh1 Rc8 41.Kd4 Rf8 42.Rf1 Rf4 43.Rf2 Bf5 44.Re2 (44.Rg2 Ke6 45.Rg3 g4 46.Rg4 Bg4 47.fg4 Rg4-+) 44…Ke6 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nf3 Nb6 8.d4 Nf6 9.Bd3 Ne4 10.0-0 Be7 11.Be4 de4 12.Nfd2 f5 13.Qh5 g6 14.Qh6 Bg5 15.Qg7 Bf6 16.Qh6 Kf7 17.Be5 Be5 18.de5 Qd5 19.Qf4 (19.c3 Qe5 20.f3 ef3 21.Nf3 Qg7-/+) 19...Re8-/+ (19...Ra2? 20.c4 Nc4 21.Ra2 Qe5 22.Qh4+-) 20.f3 Qe5 (20...Ra2? 21.c4 Qe5 22.Qe5 Re5 23.Ra2 Nc4 24.Nc4 bc4 25.fe4+-; 20...Re5?! 21.fe4 Qc5 22.Nf3=) 21.Qe5 Re5 22.fe4 Kg7 23.Rf4 Rc5 1-0. onur604 (2320) - Lewton (2430), Casual Rapid game, lichess.org, 2021.

7.Nf3 Be7 8.Be2 Nh6 9.0-0 Nf5 10.d4 Ng3 11.hg3 Nb6 12.c3 g6 13.Nbd2 0-0 14.e4 (14.Qc2!?-/+) 14...de4 15.Ne4 Bf5 16.Nfd2 (16.Bd3 Nd5 17.Qd2 Ra3-+) 16...h5 (16...b4 17.g4 Be4 18.Ne4 bc3 19.Nc3-/+) 17.g4 (better 17.Qc2!?-/+) 17...hg4-+ 18.Bg4 (18.Ng3 Nd5 19.Nf5 Nc3 20.Nh6 Kg7-+) 18...Be4 19.Ne4 f5 20.Bh5? (20.Nc5 fg4 21.Ne6-+) 20...gh5 (20...fe4?! 21.Bg6 Qd5 22.Qg4-+) 21.Qh5 (21.Nd2 h4-+) 21...Qe8 (21...fe4?! 22.Qg6 Kh8 23.Qh6 Kg8 24.Qg6 Kh8 25.Qh6 Kg8 26.Qg6=) 22.Qe8 Rae8 23.Nd2 Bf6 (better 23...Ba3 24.Rab1-+) 24.Rfe1 (24.Nf3 Ra8-+) 24...Na4 25.Nf3 (25.Re3 Re3 26.fe3 Nc3-+) 25...Re1 26.Ne1 (26.Re1 Nc3 27.Re3 Na2-+) 26...Nc3 27.Nc2 Ra8 28.a3 (28.Kf1 Kf7 29.g3 Ra2 30.Ra2 Na2-+) 28...Ne2 29.Kf1 Nd4 30.Nd4 Bd4 31.Ke2 (31.Rd1 Bc5 32.Rd7 Ra3 33.Rb7 Ra1 34.Ke2 Ra2 35.Kd3 Bf2 36.Kc3-+) 31…Ba1 0-1. Bushwacker (1930) - samurai (2830), ChessWorld.net, 2021.

7.Nf3 Be7 8.Be2 Nh6 9.0-0 Nf5 10.Bf4 g5 11.Bd3 Ng7 12.Bg3 h5 13.h3 (13.Be2 h4 14.Be5 Ne5 15.Ne5 Bd6=+) 13...g4=+ 14.hg4 hg4 15.Nd4 Nc5 16.Be2 f5 17.d3 Nh5 (17...Bd6 18.Nd2-/+) 18.Be5 Bf6 19.Bh2? (better 19.Bf6 Nf6 20.g3-/+) 19...Bd4-+ 20.ed4 Qh4 (20...Qh4 21.f4 Ne4 22.de4 Nf6-+) 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nf3 Ne7 8.d4 Nf5 9.Bd3 (9.Bf4 Bd6=) 9...Ng3=+ 10.hg3 g6 (10...Nf6 11.c3=+) 11.0-0 Bg7 12.Nbd2 f5 13.c3 0-0 14.a4 ba4 15.Ra4 Ra4 16.Qa4 b5 17.Qa2 Re8 18.Bb5 (18.Ra1 Qf6=) 18...cb5 19.Qd5 Kh8 20.Qb5 Qc7 (20...Nf6 21.Ra1=) 21.c4 (21.Qc4 Qb6=) 21...Bb7=+ 22.Ra1 Rb8 (22...Bc6 23.Qa5 Qd6 24.Rb1=) 23.Ra7= Qc6 (better 23...Qc8!?=) 24.Qc6+/- Bc6 25.Rc7 Ba4 26.Ra7 Bc6 27.c5 (27.d5 Bb7+/-) 27...Kg8 (27...Rb7 28.Rb7 Bb7 29.Nc4+=) 28.Rc7+/- Bb5 29.c6 Nf6 30.Rb7 Rb7 31.cb7 Nd7 32.Nb3 Bf8 33.Ne5 Bd6 34.Nd7 Bd7 35.Nc5 Bc6 36.f3 Kf8 37.e4 fe4 38.fe4 Ke8 39.e5 Bc7 40.Kf2 (40.Na6 Be5 41.de5 Bb7+=) 40...Kd8= 41.Ne6 Kd7 42.Nc5 (worse 42.Nc7 Kc7 43.g4 g5-/+) 42...Kd8 43.Ke3 Bg2 44.Kf4 h6 45.g4 h5 (45...Bd5!?=) 46.gh5+= gh5 47.Kg5 Bf3 48.Kf4 Bd5 49.Kg5 Bf3 50.Kh4 (50.Na6 Be5 51.de5 Bb7=) 50...Bb8 (50...Ke7 51.Na6 Be5 52.de5 Bb7 53.Nc5=) 51.Kg5 (51.Na6 Be5 52.de5 Bb7=) 51…Bc7 ½-½. onur604 (2320) - Lewton (2460), Casual Rapid game, lichess.org, 2021.

5.Bb2 Nc6 6.e3 b4 7.a3 ba3 8.Na3 Nf6 9.Nf3 Be7 10.Be2 0-0 11.0-0 Bg4 12.Nb5 Qd7 13.c4 Ra1 14.Qa1 Ne8 (14...Re8 15.Rb1=) 15.d4 Bf6 16.e4 Bf3 (16...Qe7 17.Qb1+=) 17.Bf3+- b6 18.e5 de5 19.de5 Be7 20.Rd1 Qe6 21.Bd5 Qg6 (21...Qh6 22.Qb1+-) 22.e6! fe6? (better 22...Nd8 23.ef7 Nf7+-) 23.Bc6+- Bc5 24.Bd4 Qc2 25.Bc5 bc5 26.Be8 Qf2 27.Kh1 Re8 28.Nc7 Re7 (28...Rb8 29.Ne6 Qf7 30.Re1+- (worse 30.Nc5 Qc4 31.Qe5 Rf8+-)) 29.Rf1 Qf1 30.Qf1 Rc7 31.Qf3 Rf7 32.Qe2 Kf8 (32...e5 33.Kg1 Re7 34.Qf2+-) 33.Kg1 Ke7 34.Qe5 Kd7 35.Qc5 (35.Qc5 Re7 36.Qb5 Kc7 37.c5+-) 1–0. onur604 (2315) – kulje (2045), lichess.org, 2020.

5.Bb2 d5 6.a4 (6.Nf3!?=) 6...ba4=+ 7.c4 dc4 8.Ra4 Ra4 9.Qa4 Nd7 10.e3 Qh4 (10...c6 11.Qc4 (worse 11.Bc4 b5 12.Bb5 cb5 13.Qb5 Qc7-+) 11...Ngf6 12.Nf3=) 11.Bc4 Be7?? (better 11...Qg5!? 12.Bf1 Qg6=) 12.Bg7+/- c6?? (better 12...Qg5 13.Bh8 Qg2+/-) 13.Nf3 b5 (13...Nb6 14.Bf7! (14.Nh4?! Na4 15.Nf3 Bf6 16.Bh8 Bh8+-) 14...Kf7 15.Qb3 (15.Nh4?! Na4 16.Bh8 Bh4+=; worse 15.Qh4 Bh4 16.Bh8 Be7+-) 15...Qc4 16.Ne5 Kg7 17.Nc4 Nc4 18.Qc4+-) 14.Qa8 (14.Nh4?! ba4 15.Nf5 Nb6+-) 14...Nb6 15.Qc6 (15.Qc6 Bd7 16.Qb6 Qc4 17.Qb8 Bd8 18.Nc3+-; 15.Bh8 Qc4 (15...Na8? 16.Nh4 Bh4 17.Be2+-) 16.Qb8 Qc1 17.Ke2 Qh1+=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb2 Be6 6.e3 c6 7.Nf3 Ra2 (7...Nf6!?=) 8.Ra2+= Ba2 9.Bd3 (9.Nc3 Be6+=) 9...Nf6 10.Nc3 Be6 11.0-0 (11.Nd4 d5=) 11...d5 (11...Nbd7 12.Ne2=+) 12.Ne2 (12.Ng5 b4 13.Ne2 Nbd7=) 12...Bd6 13.Ned4 (13.Nf4 Nbd7=) 13...Nbd7=+ 14.Bf5 (14.Qe2=+) 14...Bf5 (better 14...Nc5!?=+) 15.Nf5= Bf8 16.Qa1 (16.Ne5 Ne5 17.Be5 Rg8+=) 16...g6 17.Bf6 Nf6 18.Qe5 Be7?? (better 18...Kd7 19.Ng5 gf5 20.Nf7 Qe7 21.Qf5 Kc7 22.Qf4 Kb6 23.Nh8 Bg7=) 19.Ne7+- Qe7 20.Qb8 Qd8 21.Qb7 Qd7 (21...0-0 22.Qc6 b4 23.Rb1+-) 22.Qa8 Qd8 23.Qc6 Qd7?? (23...Kf8+-) 24.Qf6 0-0 25.Nd4 Qc7 (25...Ra8+-) 26.Nc6 Re8 27.Ra1 Qd7 28.Ra7 Qe6 29.Ne7 Re7 30.Qe7 Qe7 31.Re7 1–0. GuestSHNL – GuestNWSR, freechess.org, 2020.

5.Bb2 Be6 6.Nf3 Ra2 (better 6...Nf6!?=) 7.Ra2+= Ba2 8.Nc3 Bc4 9.d3 Be6 10.Nb5 c6 11.Nbd4 Qa5 12.Qd2 Qd2 13.Nd2 (13.Kd2 Bd7+-) 13...Bd7+= 14.e4 Be7 (better 14...c5!? 15.Nf5 Bf5 16.ef5 Nc6+=) 15.Nf5+- Bf6? (better 15...f6 16.Ng7 Kf7+-) 16.Nd6 Ke7 (16...Kf8 17.e5 Be7 18.Nb7+-) 17.e5 Nh6 1–0. GuestNFPR – GuestTTMS, freechess.org, 2020.

5.Bb2 Be7 6.Nf3?? Bf6= 7.d4 Nc6 (7...Be6 8.e4=) 8.e3 Nb4 (8...b4!?=) 9.Bb5 (9.Qd2 Nc6+-) 9...c6 10.Bc4 Qa5 (10...Bg4 11.0-0+-) 11.c3 (11.Bc3 d5 12.a3 Qc7+-) 11...Na2?? (better 11...Bf5 12.Na3 d5+-) 12.Ra2 (12.Ra2 Qa2 13.Ba2 Ra2 14.Ba3+-) 1–0. GuestQKHN – WAGNERUS, freechess.org, 2020.

6.e3 c5 7.Bb5 Nc6 8.Nf3 Bd7 (8...g6 9.Nc3 Bg7 10.0-0+=) 9.c4 Be7 10.0-0 0-0 11.Nc3 Nb4 (11...Bf5 12.d4+/-) 12.d3 Bb5 13.Nb5 Ra2 14.Ra2 Na2 15.Qd2 Nb4 16.e4 Ng4 (16...Nd7 17.Rd1+/-) 17.d4 cd4?? (better 17...h6+/-) 18.Qb4+- d5 19.Qd2 (19.Qe1 dc4 20.Bd4 Qd7+-) 19...dc4 (19...de4 20.Qd4 (worse 20.Nfd4 e3 21.fe3 Bg5+-) 20...Qd4 21.Nfd4+- (21.Bd4?! ef3 22.Re1 Bf6=)) 20.Qd4 Bf6 (20...Qd4 21.Bd4 (worse 21.Nbd4 Bb4+-) 21...Nf6 22.Nc3+-) 21.e5 Qd4 22.Bd4 (22.Nbd4?! Ne5 23.Ne5 Be5+/-; 22.Nfd4?! Ne5 23.Ba1 Rd8+/-) 22...Be7 23.Rc1 (23.h3 Nh6 24.Rc1 Rc8+-) 23...Rc8 (23...f6 24.ef6 Nf6 25.Rc4+-) 24.Na7 Ra8 (24...Rd8 25.h3 Nh6 26.Rc4+-) 25.Rc4 1-0. onur604 (2320) - catonamat (1960), lichess.org, 2020.

6.e3 c6 7.Be2 d5 8.Nf3–/+.

6.e3 c6 7.Be2 Be7 8.Nf3 Nbd7 (8...0-0 9.0-0=) 9.0-0 Nb6 (9...0-0 10.Bd4=) 10.d3 (10.Bd4 0-0=) 10...0-0 11.e4 (11.c4 Na4 12.Bd4 bc4–/+) 11...d5 (11...Be6 12.a3=+) 12.e5= Nfd7 13.Re1 Na4 (13...Qc7 14.d4=) 14.Bc1 f6 15.ef6 Bf6 (15...Nf6 16.Be3=) 16.d4 Ndc5 17.c3 (17.Ne5 Ne4 18.Bf3 Bf5=+) 17...Ne4 18.Bd3 (18.Qc2 b4 19.cb4 Nf2=) 18...Bf5 (18...Nec3 19.Nc3 Nc3 20.Qc2=+) 19.Qc2= c5 20.a3 (20.Ne5 Qa5 21.Bd2 A) 21...Nd2 22.Bf5 (< 22.Qd2 Bd3 23.Qd3 b4=; < 22.Nd2 Bd3 23.Qd3 Qc3 24.Qc3 Nc3–/+) 22...Nb1 A1) < 23.Reb1 Be5 (23...Qc3? 24.Bh7 Kh8 25.Ng6 Kh7 26.Nf8 Kg8 27.Qh7 Kf7 28.Qh5 Kg8 29.Ng6+-) 24.de5 Qc3=+; A2) 23.Be6 Kh8 24.Ng6 hg6 25.Qg6+/–; B) 21...c4 22.Be4 Be4 23.Re4 de4–/+) 20...Qc8 (20...c4 21.Be4 Be4 22.Re4 de4 23.Qe4–/+) 21.Bb5 (21.dc5 Nac5 22.Nd4 Bd4 23.cd4 Nd3 24.Qd3 Nf2-+) 21...cd4–/+ 22.Ba4 Nc3 (23.Qb3 Bb1–/+ (23...Ra4? 24.Nc3 Qc3 25.Qa4 Qa1 26.Qb3+-)) 0–1. Boehnke,Hartmut (1970) – Koenig,Paul (2095), 2006.

6.e3 c6 7.Be2 g6 8.Nf3 (8.h4 Bg7–/+) 8...Bg7–/+ 9.0-0 0-0 10.d4 (10.a3 Nbd7–/+) 10...h6 (10...Nbd7!?–/+) 11.Nbd2 Be6 12.a3 (12.c4 bc4 13.Nc4 Qc7+=) 12...Nbd7 13.Bd3 (13.c4 bc4 14.Bc4 Bc4 15.Nc4 Nb6+=) 13...Nb6 (13...Qc7 14.Re1–/+) 14.c3 (14.Qb1 Na4–/+) 14...Na4 15.Qc2 Nb2 (15...Nd5 16.g3–/+) 16.Qb2 d5 (16...Qc7 17.Rfe1–/+) 17.Ne5+= Kh7 (17...Nd7 18.f4+=) 18.h3 (18.Qc2 Qd6=) 18...Nd7+= 19.f4 (19.Nd7 Qd7 20.e4 de4 21.Ne4 b6+=) 19...Ne5 20.fe5 (20.de5 Qb6 21.Rfe1 f6 22.ef6 Rf6+=) 20...Qg5–/+ 21.Rf3 f6 22.ef6 Rf6 (22...Bf6 23.Kh1+=) 23.Re1 (23.Raf1 Rf3 24.Rf3 Rf8–/+) 23...Rf3 24.Nf3 Qg3 25.e4 Bh3 (25...de4 26.Be4 Bh3 27.Qf2 Qf2 28.Kf2–/+) 26.ed5 cd5 (26...Ra3 27.Re2 b4 28.Qb4 Ra1 29.Bb1 Bg2 30.Rg2 Qf3 31.Kh2 Qh5 32.Kg3-+) 27.Bb5 (27.Qf2 Qf2 28.Kf2 Bg4=) 27...Bg4–/+ 28.Rf1 Rc8 (28...Bf5 29.Be2–/+) 29.Bd3 Bf3 (29...Rf8 30.Qe2+=) 30.Rf3= Qe1 The backward pawn on c3 becomes a target 31.Kh2 Qe7 (31...Qc3?? 32.Bg6 Kg6 33.Rc3 (33.Qc3?! Rc3 34.Rc3 Kf5+-) 33...Rc3 34.Qc3+-; 31...Rc3? 32.Qc3 Qc3 33.Bg6 Kg6 34.Rc3+-) 32.Qb1 (32.g3 Rc7=) 32...Rc6 33.Kg1 (33.g3 h5= (33...Qa3? 34.Qb7 Qa2 35.Kh3+-)) 33...Re6 (33...Rc3 34.Bg6 Kh8 35.Rc3 Bd4 36.Kh2 Bc3 37.g3=) 34.Rf1 (34.Qb5 Rd6=) 34...b6 (34...Qa3 35.Rf3 b6 36.Qc2+=) 35.a4= Qg5 36.Qc1 (36.Re1 Rc6 37.Qb2 h5+=) 36...Re3 (better is 36...Qc1 37.Rc1 Rc6+=) 37.Bc2? (better is 37.Qd1+=) 37...Qg3-+ 38.Bg6 (38.Bd1 Rc3 39.Qf4 Qf4 40.Rf4-+) 38...Kg6 39.Qb1 Re4 40.Qb6 Kh7 41.Qb2 Qe3 (better is 41...Re3!? 42.Qb1 Kh8 43.Qb7 Rc3 44.Qa8 Kh7 45.Qd5-+) 42.Rf2 Rf4 (better is 42...Bf6 43.Qb7 Be7-+) 43.Qb1?? (43.Qe2 Qe2 44.Re2 Rf7–/+) 43...Qe4 (better is 43...Kg8 44.Qf1 Rf2 45.Qf2 Qc3-+) 44.Qe4 (44.Qf1 Rf2 45.Qf2 Kh8–/+) 44...Re4 45.Ra2? (better is 45.Kf1–/+) 45...Re3-+ 46.Ra3 (46.a5 Rc3 47.a6 Bd4 48.Kf1-+) 46...Bd4! 47.Kf1 (47.cd4 Ra3 Pinning (47...Ra3 Deflection)) 47...Rc3 48.Ra2 (48.Rc3 Bc3 49.Ke2 d4-+) 48...Bc5 49.a5 (49.Ke2 Kg6 50.Kd2 Bb4-+) 49...Ra3 50.Rc2 0–1. Nikolic,Jovane (1695) – De Godoy,Jurandir Dias (1900), Sao Sebastiao BRA, Aberto do Brasil, 2013.

6.e3 c6 7.Nf3 Be6=.

6.e3 c6 7.Nf3 h6 8.d4 Be7 9.Bd3 d5 10.0-0 Bg4 11.h3 Bh5 (11...Be6 12.c3=+) 12.g4= Bg6 13.Bg6 fg6 14.Ne5 g5 15.Ng6 Rg8 16.Nd2 Nbd7 17.Qe2 Kf7 18.Ne5 Ne5 (18...Ke8 19.Qd3 Qc7 20.e4+=) 19.de5 Nd7 20.Qf3 Ke8 21.e6 Nf6 22.Qf5 (better 22.e4 Ra4 23.Rad1+/-) 22...Qd6?? (better 22...g6 23.Qf3 Rf8=+) 23.Be5+- Qd8?? (23...g6 24.Qf6 Bf6 25.Bd6 Ba1 26.Ra1 b6+-) 24.Qg6 (24.Qg6 Kf8 25.Qf7) 1-0. DEFFM – GuestBWJD, freechess.org, 2021.

6.Nf3 c6 7.e3 Be7 8.c4 (8.Be2 0-0=) 8...bc4=+ 9.Bc4 0-0 10.0-0 Bf5 (10...Bg4 11.Be2=+) 11.Nd4 (11.Bf6 Bf6 12.d4 Qd7=) 11...Bg6=+ 12.Nc3 (12.Be2 c5 13.Nf3 Qb6=+) 12...h6 (12...b5 13.Bb3=+) 13.Be2 (13.Qf3 d5 14.Be2 b5=) 13...Nbd7 (13...d5 14.d3=) 14.d3 (14.f4 c5 15.Ndb5 d5=) 14...Nc5 15.f4 d5 16.f5 Bh7 17.Qe1 Bd6 18.Qh4 Qc7 (18...Re8 19.Rf3=+) 19.a4 (19.Rab1 Rfe8 20.Kh1 b6=+) 19...Rfe8 20.Qh3 Qe7 21.Bc1 Be5 22.Ra2 Bd4 23.ed4 Nb3 24.Ba3 Qc7 25.Qh4 Qa5 (26.Rc2 Qa7–/+) 0–1. wiking – Conde7, internet, 2009.

6.Nf3 d5=.

5.e3 b4 6.Nf3 Nc6 7.Bb2 d5 8.a3 Bg4 9.ab4 Ra1 10.Ba1 Bb4 11.Be2 0-0 12.0-0 Re8 13.Nc3 Ne7 (13...Qd7 14.Nb5 Ne4 15.c3=+) 14.Nb5 (14.Na2 Bd6+=) 14...c6 (14...Ne4!? 15.d3 Bf3 16.Bf3 Nd2=) 15.Bf6+= gf6 16.Ne1 Be2 (16...Be6 17.Nd3 Ba5 18.Nd4+=) 17.Qe2+/- cb5 (better 17...Ng6!? 18.Nd3 Bf8+/-) 18.Qg4+- Ng6 19.Qb4 Qd7 20.Nf3 f5 (20...Ra8 21.Qb2+-) 21.Nd4 f4 22.Rb1 Qg4 (22...fe3 23.fe3 Ne5 24.Qb5 Qb5 25.Rb5+-) 23.Qb5 (23.Nb5? Nh4 24.Kf1 Qg2 25.Ke2 fe3 26.de3 Qf3 27.Kd3 Qf5 28.Kc3 Rc8 29.Kb2 Qc2 30.Ka1 Ra8 31.Na3 Qf2-+) 23...Nh4?? (23...Rd8+-) 24.Qe8 Kg7 25.Qe5 (25.Qe5 Kg8 26.Qd5+-) 1-0. onur604 (2320) - foytik (2285), Casual Rapid game, lichess.org, 2021.

5.e3 b4 6.Nf3 Be7 7.d4 d6 8.Bg3 0-0 9.Bd3 b6 10.0-0 Ba6 11.c4 bc3 12.Nc3 Bd3 13.Qd3 d5 14.Ng5 (14.Bh4=) 14...h6 (better 14...c6!?=) 15.Bc7+/- Qd7 16.Bb8 Rfb8 17.Nf3 Ra3 (17...b5 18.Ne5 Qe8 19.a3+/-) 18.Ne5 (18.Rab1 Qe6+/-) 18...Qc7 (18...Qe6!? 19.Qd2 b5+=) 19.Nb5+/- (19.Nb5 Rd3 20.Nc7+-) 1-0. onur604 (2320) - SomeOrdinaryChessPla (2105), lichess.org, 2020.

5.e3 Bc5 6.Bb5 0-0 7.Nf3 c6 8.d4 Qa5 (8...d6 9.Bf6 (worse 9.dc5 de5 10.Qd8 Rd8=+) 9...Qf6 10.Bd3+=) 9.Nbd2+/- Bb4 (9...Qb5 10.c4 Qa5 11.dc5 Qc5 12.Bf6 gf6 13.Ne4 Qc4 14.Nf6 Kg7 15.Nh5 Kg8 16.Nd2+/-) 10.Bd3 Nd5 (10...Bc3!? 11.Rb1 d5+/-) 11.0-0+- Nc3 12.Qc1 (better 12.Qe1!? Na4 13.a3+-) 12...Ba3+/- 13.Nc4 Bc1 14.Na5 Bb2 15.Rab1 Nb1 16.Rb1 Ba3 (better 16...Ra5!? 17.Rb2 Na6+=) 17.Nc4+- (17.Nb7?! d5+=) 17...Be7 (better 17...d6 18.Bf4 Nd7 19.Na3 Ra3 20.Bd6 Ra2+-) 18.Nb6 Ra2 (18...d6 19.Na8 de5 20.Ne5+-) 19.Bb8 d5 20.Nc8 Rc8 21.Rb7 Ra1 22.Bf1 Ra8 (22...Rc1 23.Bf4 (23.Re7?! Rb8 24.Rc7 g6 25.Rc6 Rbb1+-) 23...Re8 24.Rb2+-) 23.Bf4 Bf6 24.g3 c5 (24...Ra2 25.Bd3+-) 25.Bh3 Rf8 (25...cd4 26.Bc8 Rc8 27.ed4+-) 26.dc5 Ra1 (26...d4 27.ed4 Ra3 28.Kg2+-) 27.Kg2 Rc1 (27...Ra6 28.Bd7 Rfa8 29.c6+-) 28.c6 Rc2 29.c7 g5 (29...Be7 30.Nd4 Rc1 31.Bd7+-) 30.Bd6 Ra8 (30...Rc7 31.Rc7 Rd8+-) 31.Rb8 Rb8 32.cb8Q Kg7 33.Bf8 Kg6 34.Ne5 Be5 35.Qe5 (35.Qe5 Rf2 36.Kf2 Kh5 37.Qf6 d4 38.Qf7) 1-0. DEFFM – ankoay, freechess.org, 2021.

5.e3 Nc6 6.Bf6 Qf6 7.Nc3 b4 8.Nb5 Bd6 (8...Qd8 9.Nh3=) 9.d4= 0-0 10.Bd3 Re8 11.Nf3 (11.Qf3 Qe7=) 11...b6 12.Qd2 Ba6 13.0-0 Bb5 14.Bb5 Ra5 15.Qd3 Qh6 16.Rfb1 Re6 17.Bc6 dc6 18.e4 Bh2?? (better 18...Qf4 19.e5 Be7=) 19.Nh2+- Rh5 (19...Qh4 20.Rb4 Rh6 21.Qg3+/-) 20.Qg3 Re4 21.Qc7 (21.Rb4?! g6 22.f4 c5+=) 21...g5 (21...g6 A) 22.Qc6 Rh2 23.g3 Rh1 (23...Rd4?? 24.Qe8 Kg7 25.Qe5 f6 26.Qd4 Rh1 27.Kg2 Rh2 28.Kf3+-) 24.Kg2 Qh3 25.Kf3 Qf5 26.Kg2 Rh2 27.Kh2 Qf2 28.Kh3 Qf5 29.Kh2 Re2 30.Qg2 Rg2 31.Kg2 Qc2 32.Kh3 Qf5 33.Kh2 Qf2 34.Kh3 Qd4-+; B) worse 22.Rb4 Reh4 23.Qc8 Kg7-/+; C) 22.Re1 Qf4 23.Qf4 Rf4 24.Nf3+-) 22.Re1 (22.Rb4 Rh2 23.Qh2 Rh4 24.Qb8 Kg7 25.Qe5 Kg8+-) 22...Rf4 (22...Rhh4+-) 23.Re8 Kg7 24.Qd8 f6 (24...Kg6 25.Rg8 Kf5+-) 25.Rg8 Kf7 26.Qe8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 d6 6.Bb2 c6 7.Nf3 Be7 8.d4 d5 9.Bd3 0-0 10.Nbd2 Re8 11.0-0 Bd6 12.c3 (12.Re1 Be6=) 12...Bg4 (12...Ne4 13.Ne5 Nd2 14.Qd2=+) 13.a4= ba4 14.Ra4 Nbd7 (14...Ra4 15.Qa4 b5 16.Qb3=) 15.Ra8 Qa8 16.Qc2 (16.c4 dc4 17.Nc4 Bc7+=) 16...b5 17.h3 Bh5 18.Nh4 Bg6 (18...Qb8 19.g4 Bg6 20.Ng6 hg6 21.Ra1=) 19.Ng6+= hg6 20.e4 de4 21.Ne4 Ne4 22.Be4 Nf6 23.Ra1 Qb7 24.Bf3 Bb8 (24...Nd5 25.Qb3+=) 25.g3 (25.Ba3 Qd7+=) 25...Qd7 26.Kg2 Nd5 27.Qb3 Nb6 (27...Qe6 28.Bd5 cd5 29.Qb5 Qe4 30.Kg1+=) 28.Ra6+/- Bc7 29.Bg4 Qd8 30.Ba3 Qb8 (30...Re1!? 31.Qb4 Nc4=) 31.Bc5+/- Qb7 32.Qa2 Ra8 33.Ra8 Na8 34.Qe2 Bb6 (34...Ba5 35.Qe8 Kh7 36.Bf3+-) 35.Qe8 Kh7 36.Bb4 Ba7 (36...f5 37.Bf3 Nc7 38.Qc6 Qc6 39.Bc6+-) 37.Bf3 Nb6 38.Qc6 (38.Qc6 Qc6 39.Bc6+-) 1-0. GuestFKFW – coronacoovid, freechess.org, 2020.

5.e3 d6 6.Bb2 Bd7 7.Nf3 (7.Qf3 Be7=) 7...Be7 8.d4 (8.Bd3 Na6=) 8...0-0 9.a3 (9.Bd3 Na6=) 9...Ne4 (9...d5 10.Bd3=+) 10.Bd3= d5 11.0-0 c6 12.Ne5 Bf6 (12...Be6 13.Nd2 Nd2 14.Qd2=+) 13.Nc3 (13.Qh5 Qe8=) 13...Nc3 14.Bc3 Be6 (14...Be5 15.de5 Qh4 16.Bd4=) 15.f4 (15.Qh5 g6 16.Qf3 Bg7=) 15...g6 (15...Be7 16.Bb4 Re8 17.Bh7 Kh7 18.f5+-) 16.f5 Bd7 (16...Bf5 17.Bf5 Be5 18.de5 gf5 19.Qh5+-) 17.Bb4 Re8 18.fg6 fg6 19.Qf3 Bg7? (better 19...Kg7+=) 20.Qf7+- (20.Nd7?! Qd7 21.Qg3 Na6=) 20...Kh8 21.Ng6! (21.Nd7?! Qd7 22.Rae1 Ra7+=) 21...hg6 22.Qg6 Qh4 23.Rf5! Bf5 (23...Bf5 24.Qe8 Mate attack) 24.Qe8 Kh7 25.Bf5 Kh6 26.Qg6 1–0. onur604 (2320) – Mohamed_abdo_000 (1980), lichess.org, 2020.

5.e3 Be7 6.Bb5= 0-0 7.Nf3 Nc6 8.Bb2 d6 9.0-0 Bg4 10.Bc6 (10.h3 Bh5+=) 10...bc6= 11.d3 (11.Nc3 Qd7=) 11...Qb8 (11...Rb8 12.Bf6 Bf6 13.c3=+) 12.Bc3= Nd5 13.h3 Bh5 14.a4 Nc3 (14...f5 15.a5=) 15.Nc3 Qb2 (better 15...Qb4!? 16.Ne4 Ra6=) 16.Qd2+/- Bf6 17.d4 Qb7 (17...Bg6 18.e4 Qb6 19.Rfb1+/-) 18.Rfb1 Qc8 19.Ne1 h6 (19...Qa6 20.Nd3+/-) 20.Nd3 Bg6 21.Nf4 (21.a5 Bg5+/-) 21...Bh7 22.a5 Be7 (22...Re8 23.Nh5 Bg5 24.d5+/-) 23.Nce2 (23.Na2 c5 24.Nc3 c6+/-) 23...Qf5 (23...Qa6!?+/-) 24.a6+- g5 (24...Ra7 25.Ng3 Qc2 26.Qc2 Bc2 27.Rc1+-) 25.Nd3 Kg7?! (25...Ra7+-) 26.a7 d5 27.Ng3 Qe6 28.Rb7 Bd6 29.Rab1 (29.Nc5 Qg6+-) 29...Bg3 30.fg3 Qd6 31.Qf2 Bd3 32.cd3 c5? (32...Qa3 33.Rf1 Ra7 34.Qf6 Kh7 35.Ra7 Qa7+-) 33.dc5 Qc5 34.Qb2 Kg6 35.d4 (better 35.Qc1 Qc1 36.Rc1+-) 35...Qa5 (35...Qc6+-) 36.Ra1 Ra7 37.Ra7 (37.Ra7 Qb6 38.R1a6 Qa6 39.Ra6 f6 40.Qc2 Kg7 41.Qc7 Rf7 42.Qd8 Rf8 43.Ra7 Rf7 44.Ra8 Kg6 45.Qe8 h5 46.Ra7 Kf5 47.Rf7 Kg6 48.Rd7 Kh6 49.Qg8 h4 50.Rh7) 1-0. onur604 (2320) - mrs_capalanca (1970), lichess.org, 2020.

6.c4 b4 7.a3 (7.d4 d6 8.Bf4 Be7=) 7...Bc5 (7...ba3 8.Qb3=+) 8.ab4= Ra1 9.Ba1 Bb4 10.Nf3 Qa5 (10...0-0!?=) 11.Bf6+= gf6 12.Be2 d5 13.cd5 Qd5 14.0-0 Bf5 15.Nc3 Qd7 16.Qb3 Na6? (better 16...Qe7+/-) 17.Ba6+- (17.Ba6 Bc3 18.Bb7+- (18.dc3?! ba6 19.Ra1 0-0+-)) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.c4 bc4 7.Bc4 d5 8.Be2 Nbd7 9.Bb2 Bd6 10.Nf3 0-0 11.0-0 Nc5 12.Qc2 Na4 13.Be5 Re8 14.d4 Bb4 (14...Bg4 15.Bd6 Qd6 16.Nbd2=) 15.a3 Ba5 1-0. DEFFM – Boas, freechess.org, 2021.

6.Nf3 d5 7.d4 Nbd7 8.Bd3 Ne5 9.de5 Nd7 10.0-0 Be7 11.e4 de4 12.Be4 0-0 13.Qe2 Nc5 14.Nbd2 Be6 15.Rfd1 Qc7 16.Nb3 Ne4 17.Qe4 Bd5 18.Rd5 (18.Qe3 Bf3 19.gf3 Ra3-/+) 18...cd5 19.Qd5 b4 (19...Qc2 20.Nfd4 Qb2 21.h3-+) 20.Nfd4 Rfd8 21.Qe4 Bf8 22.g3 (22.Nf3 Qc6 23.Qe2 Qc3-/+) 22...Re8 23.e6 (23.Nf3!?-/+) 23...fe6-+ 24.Nb5 Qd7 25.Qe2 Rac8 26.Rd1 Qc6 27.Rd2 Qc4 (27...Qa6 28.Rd7-+) 28.Qe5 Rcd8 29.Rd8 (29.Nc7 Bd6 30.Ne8 Be5 31.Rd8 Kf7 32.Nd6 Bd6 33.Rd6 Qc2-+) 29...Rd8 30.N5d4 Kh8 31.Kg2 Qd5 32.Qd5 ed5 (32...Rd5?! 33.Ne6 Be7 34.h3-/+) 33.Kf3 Ra8 34.Nc1 (34.Kf4 Bd6 (34...Ra2?! 35.Ke5-/+) 35.Kf5 Ra6-+ (worse 35...Ra2 36.Ke6 Ra6 37.Kd5-/+)) 34...Bc5 35.Ne6 Bb6 (35...b6!? 36.Nf4-+) 36.Nd3 Ra2 37.Nb4 Ra5 38.Nf4 d4 39.Nbd5 (39.Ke4-+) 39...Bd8 (better 39...g5 40.Nb6 gf4-+) 40.Ke4=+ g5 (40...Bf6!?=+) 41.Ne6= Rd5? (better 41...Ra8=) 42.Kd5+- Bf6 43.Nd4 g4 44.Nf5 h5 45.c4 Kh7 (45...b6 46.Kc6 Bd8 47.Nd4+-) 46.c5 Kg6 47.Nd6 1-0. onur604 (2320) - norb3rgh (2285), Casual Rapid game, lichess.org, 2021.

6.Nf3 d5 7.Be2 Nbd7 8.Bf4 Ne4 9.0-0 g5 10.Bg3 h5 11.d3 Ng3 12.fg3 Qe7 13.Qd2 h4 14.g4 h3 15.g3 Nf6 16.Nd4 Bg7 (16...Ng4 17.Bg4 Bg4 18.c3-/+) 17.Nf5 (17.c3!?=+) 17...Bf5-/+ 18.gf5 Bh6 (18...Ng4 19.Bg4 Ba1 20.c3-+) 19.g4 Bg7 20.c3 (20.d4 Rh4 21.Nc3 Ng4-+) 20...Rh4 21.Kh1 (21.e4!? Ng4 22.ed5-+) 21...Ng4-+ 22.Bg4 Rg4 23.Rf2 b4 24.a4 ba3 25.Qc1 Bf8 26.Raa2 (26.f6 Qe6 27.Nd2 Rg2-+ (27...Qe3?! 28.Qf1 Kd7 29.Rf3 Qd2 30.Qh3-+)) 26…Qe5 (26...Qe5 27.Qd1 Rg2 28.Rg2 hg2 29.Kg2 Bd6-+ (29...Qe3 30.Re2 Qe2 31.Qe2 Kd7 32.Qa2+/-)) 0-1. GuestGRDT – GuestXKXG, freechess.org, 2020.

6.Nf3 Be7 7.Bd3 d6 8.Bb2 Be6 9.0-0 Ra2 (9...Ba2? 10.Nc3+-) 10.Ra2 Ba2 11.Nc3 Be6 12.Nd4 0-0 13.Ne6 fe6 14.Qf3 Nbd7 (14...d5 15.Ra1=+) 15.Ne4 d5 16.Ng5 Ne4 17.Ne6 Rf3 (17...Nd2?? 18.Qh3 Nf6 19.Nd8 Rd8 20.Bh7 Kf7 21.Qf5+-) 18.Nd8 Bd8 (better 18...Rf2!? 19.Rf2 Nf2 20.Kf2 Bd8=+) 19.gf3+/- Nd2 20.Ra1 Nb6 21.Kg2 g6 (better 21...Na4!?+/-) 22.Ra7 Nbc4 23.Bd4 b6?? (better 23...Bb6 24.Bb6 Nb6 25.Rb7 Nbc4+-) 24.Ra8 c5 25.Rd8 Kf7 26.Bh8 (26.Bc3 b4 27.Bd2 Nd2 28.Rd5 Ke6+-) 26...Ke6 27.Re8 Kd7 (27...Kd6 28.Bg7+-) 28.Ra8 Nd6 (28...Kd6 29.Ra7+-) 29.Ra7 Kc6 30.Rh7 c4 (30...b4 31.Rh6+-) 31.Bg6 b4 32.Rh6 b3 33.Be8 Kc5 (33...Kc7 34.Rh7 Kc8 35.Bg6+-) 34.Bd4 Kb4 35.c3 Ka3 36.Rd6 b2 37.Bg6 Ne4 (37...b1Q 38.Bb1 Nb1 39.Rb6 Nc3 40.Bc3+-) 38.Rb6 (38.Rb6 b1Q 39.Rb1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

(--> 1.b4 e5 2.Bb2 d6 3.b5 a6).

4.a4 ab5 5.ab5 Ra1 6.Ba1 Nf6 (---> 1.b4 e5 2.Bb2 d6 3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 Nf6).

4.a4 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 a6).

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 Qa5 9.Nc3 Ne7 10.e3 (10.Nf3 f6+=) 10...f6 (10...Bb4 11.Bc4=) 11.Bc4 Bc7 1–0. onur604 (2320) – freechess2018 (2015), lichess.org, 2020.

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 Qa5 9.Nc3 Nf6 10.e3 0-0 11.Qa4 Qc7 12.Nf3 e4 (better 12...b6!?=) 13.Ng5+- Re8 (13...Be7 14.Nge4 d5 15.Nf6 Bf6 16.d4+-) 14.Bc4 (14.Bc4 Qc5 15.Nf7+-) 1–0. onur604 (2320) – freechess2018 (2015), lichess.org, 2020.

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 Qa5 9.Nc3 Nf6 10.Nf3=.

4.a4 c6 5.Nf3 Qe7 6.e3 Nf6 7.Bc4 0-0 8.0-0 Bc7 9.b6 Bb6 10.Ne5 d5 11.Bb3 Re8 12.d4 Nbd7 13.c4 dc4 (13...Bc7 14.f4=) 14.Ba3 (14.Nc4 Bc7=) 14...c5 (14...Qd8 15.Nc4 Bc7 16.a5=) 15.Nc4 Bc7 16.Nc3 (16.a5 Rb8+=) 16...b6 17.d5 Be5 18.d6 Qd8 19.Bb2 Bb7 20.Ba2 (20.Qc2 Bc3 21.Qc3 b5=+) 20...Bc3 21.Bc3 Ne4 (21...b5 22.ab5 ab5 23.Qb1=+) 22.Be1= Qg5 23.f3 Nef6 24.e4 b5 25.Na5 Be4 (better 25...Rab8!?=) 26.fe4+- Re4 27.ab5 ab5 28.Nc6 h5?? (better 28...c4 29.Ne7 Kf8+-) 29.Bf7!+- Kf7 30.Ra8 h4 (30...c4 31.Kh1 Rf4 32.Bc3+-) 31.Ra7 (31.Qb1 Qd5 32.Qb5 h3+-) 31...Kg8 32.Ne7 Kh7 33.Rf5 Qh6 (33...Qg4 34.Qg4 Ng4 (34...Rg4 35.Rd7 h3 36.Rc7 Rg2 37.Kf1 Rh2 38.Rf4 Rh1 39.Kf2+-) 35.Bh4 Nh6 36.Rd7 Rh4 37.Rc5 Rb4+-) 34.Rd7! (34.Rd7 Nd7 35.Bd2+-) 1–0. onur604 (2320) – TheCasualPlayer (2055), lichess.org, 2020.

4.a4 ab5 5.ab5 Ra1 6.Ba1 Nf6 7.e3 d5 8.c4 c6 9.Bf6 Qf6 10.cd5 (10.bc6 bc6 11.cd5 cd5=) 10...cd5=+ 11.Qc2 Bd7 (11...Bg4 12.Nc3=+) 12.Nc3= Qd6 13.Nge2 Be7 14.Qa2 Be6 15.Nf4 Now all is on d5 15...d4 (15...0-0 16.Nfd5 Nd7 17.Bc4+/-) 16.Ne6+/- dc3 17.Ng7 Kf8 18.Nf5 cd2 (18...Qc5 19.Nd4+/- (19.Ne7?? c2 20.Qc2 Qc2-+)) 19.Qd2 Qd2 20.Kd2 Bb4 (20...Rg8 21.Ng3+- (21.Ne7?! Ke7 22.g3 Rd8 23.Kc3 Nd7+/-)) 21.Kc2 Rg8 22.Ng3 Ke7 23.Ne4 Rc8 (23...Nd7 24.Kb3 Nc5 25.Nc5 (25.Kb4?! Ne4 26.Bc4 Rg2+-) 25...Bc5 26.g3+-) 24.Kb3 Ba5 25.Bc4 Nd7 (25...f5 26.Ng3 Rf8 27.f4+-) 26.Bf7! Nc5 (26...Kf7 27.Nd6 Double attack) 27.Nc5 Rc5 28.Bc4 Rg5 29.g3 Rf5 (29...Re5 30.Bd3+-) 30.f4 Bd2 31.e4 Rh5 32.e5 Be3 33.Be2 Rh6 34.Kc4 Bf2 35.Bf3 b6 36.f5 Bg3 (36...Bc5+-) 37.hg3 (37.hg3 Rh1 38.Bh1+-) 1-0. onur604 (2320) - riturajtezpur (2135), Casual Rapid game, 2021.

4.a4 d5 5.e3 Nf6 6.c4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.cd5 (9.Qc2 A) 9...dc4 10.Bc4 Bd6 (10...Qe7+= 11.Bf6 Nf6 12.Nc3 Bf5 13.Qa2=) 11.f3 Nc5 12.fe4 Nce4 13.Nf3=; B) 9...Qe7 10.Bf6 Nf6 11.cd5 Nd5 12.Nc3 Nc3 13.dc3+=) 9...Nd5 10.Nc3 (10.d3 Nc5 11.d4 Ne6 12.Qb3 Bb4 13.Bc3+=) 10...Nc5 11.Na4 (11.Nd5 Qd5 12.Qc2 Bd6 13.b6+=) 11...Nb4 (11...Na4 12.Qa4 Bf5 13.Ne2+= (13.f3+=); 11...Nd3 12.Bd3 ed3 13.Nf3+=) 12.Nc5= Bc5 13.Qb1 Qd5 14.Bc3 (14.Bg7 Rg8 15.Bd4 Nd3 (15...Bd4?! 16.Qb4 Bc5 17.Qa4=) 16.Bd3 ed3+=) 14...Nd3+= 15.Bd3 ed3 16.Nf3 Bg4 17.0-0 Bf3 18.gf3 0-0 19.e4 Qd6 20.Kh1 g6 21.Kg2 Ra8 22.Qb3 Bb6 (22...Qe6 23.Qb1 Rd8 24.Qb2–/+) 23.Ba1 Qa3 (23...Kf8 24.Rc1+=) 24.Qd5= Qc5 25.Qd3 (25.Qb7?? Ra1 26.Qd5 Qd5 27.ed5 Ra2-+) 25...Qg5 26.Kh1 Rd8 27.f4 Qe7 28.Qe2 Bd4 29.Bc3 Qc5 30.h3 b6 31.Rd1 Bc3 32.dc3 Rd1 33.Qd1 Qf2 34.Qd8+= Kg7 35.Qd4 Qd4 36.cd4 Kf6 37.Kg2 Ke7 38.Kf3 Kd6 39.Ke3 c5 40.bc6! Kc6 41.h4 ½–½. Wiese,Uwe (2345) – Gierth,Karlheinz (2265), RSX7E – A00 – Sokolsky–2, 2009.

4.a4 d5 5.e3 Nf6 6.c4 dc4 7.Bc4 A) 7...Bd6 8.d3 (8.Nc3 0-0 9.d3 Bg4 10.Nge2 ed3 11.Bd3 ab5 12.ab5 Ra1 13.Ba1+=; 8.Ne2 ab5 9.ab5 Ra1 10.Ba1 0-0 11.d3 Be6 12.Qc2 Bc4 13.dc4+=; 8.Qb3 0-0 9.d3 Nbd7 10.de4 Nc5 11.Qc2 ab5 12.ab5 Ra1 13.Ba1+=) 8...0-0 9.Nc3 ed3 10.Qd3 Qe7 11.Nf3 ab5 12.ab5 Ra1 13.Ba1+=; B) 7...Be7 8.f3 (8.d3 ab5 9.Bb5 c6 10.Bc4 0-0 11.Ne2 ed3 12.Qd3 Qd3 13.Bd3+=) 8...ab5 9.ab5 Ra1 10.Ba1 Bd6 11.fe4 Ne4 12.Nf3 0-0 13.0-0=; C) 7...ab5 8.ab5 Ra1 9.Ba1 Bd6 10.d3 0-0 11.Ne2 Be6 12.Qc2 Bc4 13.dc4+=.

4.a4 d5 5.e3 Nf6 6.c4 Be6 A) 7.Qc2 A1) 7...c6 8.f3 (8.cd5 cd5 9.Ne2 ab5 10.ab5 Ra1 11.Ba1 Bd6 12.d3 ed3 13.Qd3+=) 8...ab5 9.ab5 Ra1 10.Ba1 Bf5 11.bc6 bc6 12.Bd4 dc4 13.Nc3=; A2) 7...dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.Be6 fe6 12.Bf6 Nf6 13.Nc3=; A3) 7...Bb4 8.cd5 Bd5 9.Bc4 c6 10.Bd5 Qd5 11.Bf6 gf6 12.Nc3 Bc3 13.dc3=; A4) 7...ab5 8.ab5 (8.cd5 Bd5 9.ab5 Ra1 10.Ba1 Nbd7 11.Bd4 c5 12.bc6 Bc6 13.f3=) 8...Ra1 9.Ba1 Nbd7 10.cd5 Bd5 11.Bd4 c5 12.bc6 Bc6 13.f3=; B) 7.Ne2 ab5 (7...dc4 8.Nf4 Bg4 9.Qc2 Bd6 10.Bc4 Bf4 11.ef4 0-0 12.0-0 ab5 13.ab5=) 8.ab5 Ra1 9.Ba1 dc4 10.Nf4 Bf5 11.Bc4 Bd6 12.Nh5 Nh5 13.Qh5+=; C) 7.cd5 Nd5 8.Ne2 (8.Nc3 Nc3 9.Bc3 ab5 10.ab5 Ra1 11.Qa1 f6 12.Qb1 Qd5 13.d3+=; 8.d3 Bb4 9.Nd2 ed3 10.Bg7 Ne3 11.fe3 Rg8 12.Rb1 Bd2 13.Qd2–/+) 8...ab5 9.Nbc3 Nb4 10.Nf4 Bf5 11.Bb5 c6 12.Be2 Bd6 13.d3=.

4.a4 d5 5.e3 Nf6 6.Ne2 Bb4 (6...Bd6 7.Nf4+=) 7.c4 (7.Nf4 0-0+=) 7...0-0 (7...dc4 8.Nd4–/+) 8.cd5 ab5 (8...Qd5?! 9.Bf6 gf6 10.Nbc3+=) 9.ab5 Ra1 10.Ba1 Nbd7 (10...Nd5!? 11.Qc2 Re8=) 11.Ng3= Nc5 (11...Re8 12.Qc2=) 12.Bf6 Qf6 (worse is 12...gf6 13.Qh5+/–) 13.Bc4 (13.Qc2 Rd8=) 13...Bd7 14.0-0 Qb2 (14...Qb6 15.Qc2+=) 15.f3 (15.Qc1 Qc1 16.Rc1 Ra8+=) 15...ef3 16.Rf2 (worse is 16.Rf3 Bg4–/+) 16...Ba5 The isolani on b5 becomes a target 17.d4 (worse is 17.Rf3 Bg4–/+ (worse is 17...Bb5 18.Bb5 Qb5 19.d4+=)) 17...Qb4 18.Nd2 (worse is 18.Rf3 Bg4 19.Be2 Bf3 20.Bf3 Nb3–/+) 18...Na4 19.Qf3 (19.Rf3? Nb6 20.Bd3 Qd2-+) 19...Nb6 20.Bf1 f6 (20...Bb5 21.Bb5 Qb5 22.e4+=) 21.Nh5 (21.Nge4 Bb5 22.Nc5 Bf1 23.Nf1 Qc4+/–) 21...Qe7 (21...Rf7 22.Nf4+=) 22.Nc4+/– Nc4 (22...Be1 23.Rc2 Nc4 24.Bc4+/– (24.Rc4?! Bb5 25.Rc5 Bf1 26.Kf1 Bd2=)) 23.Bc4 Qb4 24.Qg3 g6 25.Rf6 (25.Nf6?! Rf6 26.Rf6 Qc4 27.Rg6 hg6 28.Qg6 Kh8 29.Qf6 Kh7 30.Qf7 Kh6 31.Qd7 Qc1 32.Kf2 Qe1 33.Kf3 Qf1 34.Kg3 Qe1 35.Kf3 Qf1 36.Kg3 Qe1 37.Kf3=) 25...Qb1 26.Bf1 Bb5 27.Rf8 Kf8 28.Qf4 Kg8 29.Nf6 Kg7 30.Ne4 Kg8 31.Ng5 Qf1 32.Qf1 Bf1 33.Kf1 b5 34.Ne6 Kf7 35.Nd8 Kf6 36.Nc6 Bc3 37.Ke2 b4 38.Kd3 Be1 39.Na5 Ke7 40.e4 Kd7 41.g4 1–0. Taulien,Hans_Juergen (2350) – Winiger,Albert (2340), remoteschach.de, 2004.

4.e3 ab5 5.Nc3 d5 6.Nb5 c6 7.Nd4 Nf6 8.Nge2 Qb6 (8...b5 9.Nf4+=) 9.Nb3 (9.Bc3 c5 10.Nb3 Nbd7+=) 9...Be7 10.Nf4 (10.a4 0-0+=) 10...0-0 11.Be2 Qc7 12.g3 (12.0-0 Nbd7+=) 12...Ba3 (12...b5!?–/+) 13.Bf6= gf6 14.Qb1 Kh8 (14...b5 15.f3=) 15.c4 (15.f3 f5=) 15...dc4 16.Bc4 b5 (16...Qe7 17.0-0=) 17.Be2 f5 (17...Re8 18.Qc2 Qd6 19.d4=) 18.0-0 (18.Qc2 Qd6=) 18...Rg8 (18...Bd6 19.d3=) 19.d3 Qe7 20.Rd1 Bd6 21.Qc2 (21.Qb2 f6=) 21...b4 22.Bf1 Re8 (22...Be5 23.Rac1=) 23.Bg2 (23.d4 Qf6=) 23...Bb7 (23...Ba6 24.d4=) 24.Nd4+= The backward pawn on c6 becomes a target 24...Ra5 25.Rd2 (25.Kh1 Bf4 26.gf4 Ba6 27.de4 fe4 28.Nc6 Nc6 29.Qc6 Bd3+=) 25...Bc8 (25...Bf4 26.gf4 Rg8 27.Nb3=) 26.de4 (26.Nc6 Nc6 27.Qc6 Bd7+/–) 26...fe4+= 27.Nc6 Nc6 28.Qc6 Be5 29.Rad1 Bg4 30.Qe8 Qe8+= 31.Rd8 Kg7 32.Re8 Bd1 33.Rd8 Bc2 34.Rd5 Rd5 35.Nd5 Bd6 36.Bf1 Bd1 37.Bc4+= Bg4 38.Nf4 Bf4 39.ef4 Kf8 40.Kf1 Ke7 41.Ke1 f6 42.Kd2 Kd6 43.Ke3 Kc5 44.Bg8 Bf5 45.Bb3 h6 46.h4 Kb5 47.Kd4+- Ka5 48.Kc5 Bh3 49.Kd6 Bg4 50.Ke7 f5 51.Kf6 h5 52.Ke6 Kb5 53.Ke5 Ka5 54.Kd4 Kb5 55.Kd5 Bf3 ½–½. Taulien,Hans_Juergen (2350) – Staats,Carsten (2315), remoteschach.de, 2001.

4.e3 d5 5.Bd4 +=.

(--> 1.b4 e5 2.Bb2 f6 3.b5 a6).

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

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

4.a4 ab5 5.ab5 Ra1 6.Ba1 Bc5 7.e3 Ne7 8.Nf3 d6 9.d4 Bg4?? 10.dc5+- dc5 11.Be2 (11.Be5?! Bf3 12.Bf6 Bd1 13.Be7 Bc2+-) 11...c6 (11...Qe6+-) 12.Be5 Qe6 13.Bb8 Bf3 14.Bf3 0-0 15.Bc7 Ra8 16.0-0 h6 17.Qd6 Qd6 (17...c4 18.bc6 bc6 19.Nc3+-) 18.Bd6 Nf5 19.Bc5 Ra2 (19...Nh4 20.Be4+-) 20.bc6 (20.bc6 bc6 21.Na3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.a4 ab5 5.ab5 Ra1 6.Ba1 Bc5 7.Nf3 d6 8.e3 Bg4 9.Be2 Ne7 10.d4 ed4 11.Bd4 Bd4 12.Qd4 Qd4 13.Nd4 Be2 14.Ke2 b6 (14...Nd7 15.Nd2+=) 15.Nd2+/- Nd7 16.Ra1 0-0 (better 16...Nf8!?+/-) 17.Ra7+- Rc8 18.Nc4 Nc5 19.Nb6! (19.Nb6 cb6 20.Re7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.a4 Bc5 5.e3 ab5 6.ab5 Ra1 7.Ba1 Ne7 8.Nf3 d6 9.d4 ed4 10.ed4 Bb6 11.Nbd2 0-0 12.Bd3 Nd5 (12...d5 13.0-0=) 13.0-0 Re8 (13...Nf4 14.Nc4 d5 15.Nb6 Qb6 16.Bb2=) 14.Ne4 Qh6 (14...Qd8 15.c4 Nf4 16.Bc3=) 15.Neg5+/- f6 16.Re1 (worse 16.Nh7 Nf4-/+; worse 16.Bh7 Kf8-/+) 16...Bd7? (16...Re1 17.Qe1 Qh5 18.Ne6+= (worse 18.Nh7 Nf4-/+)) 17.Bc4 (better 17.Re8!? Be8 18.Qe2+- (18.Nh7 Bg6=+)) 17...c6 18.bc6 bc6 19.Qb1 Re1?? (better 19...Rc8 20.Ne4 Bc7+/-) 20.Ne1+- Qg5 (20...Ba7 21.Qb7 Qg6 22.Qa7+-) 21.Qb6 Qc1 (21...Qg6 22.Qb8 Qe8 23.Qb4+-) 22.Qb8 Kf7 23.Bc3 Ke7 (23...Kg6 24.Ba5 Qf4 25.Bd3 Kf7 26.Bh7+-) 24.Bd5 cd5 25.Bb4 Kf7 (25...Bf5 26.Qd6 Kf7 27.Qd5 Kg6 28.h3+-) 26.Qc7 h5 (26...Kg6 27.Qd7 Qd1 28.Qe8 Kh6 29.h4+-) 27.Qd7 Kg6 28.Qe8 Kg5 (28...Kh6+-) 29.Bd2! Qd2 30.Nf3 Kg4 31.Nd2 (31.h3 Kf4 32.g3 Kf3 33.Qh5 Ke4 34.Qh4 Qf4 35.Qf4) 31...g5 (31...Kf5 32.Qh5 Ke6 33.Qe8 Kf5 34.g4 Kg4 35.Qg6 Kf4 36.h3 f5 37.Qg3) 32.Qe6 f5 33.h3 Kh4 (33...Kf4 34.Qd6) 34.Nf3 1-0. onur604 (2320) - SmartAlice (2205), Casual Rapid game, lichess.org, 2021.

4.cb5 b6 5.Bb2 f6 (5...e4 6.a3=) 6.e3 d5 7.Qc2 (7.d4 Bb4 8.Nc3 e4=) 7...Bb7 (7...Bd6 8.d4=+) 8.Nf3 (8.d4 Bd6=) 8...Bd6 9.Nc3 Ne7 10.Be2 c5 11.0-0 (11.bc6 Nbc6 12.Nb5 0-0=) 11...Qc7 12.d3 Nd7 13.h3 0-0 14.Qb3 (14.Rfc1 Rfd8=+) 14...Kh8 15.Nd2 f5 16.Bf3 e4 17.de4 fe4 (17...de4?! 18.Be2=) 18.Bg4 Ne5 (18...Nf6 19.Bd1–/+) 19.Be2 Rf6 (19...Nd3 20.Bd3 ed3 21.Qd1–/+) 20.Nd1 (20.f4 ef3 21.Nf3 Raf8–/+) 20...Bc8 (20...Rg6 21.f3–/+) 21.f4 ef3 22.Bf3 (22.Nf3 Bf5–/+) 22...Be6 23.Qc2 Raf8 24.Bh5 Nf5 25.e4 Ng3 26.Rf6 Rf6 27.Bf3 d4 28.Nf2 Qf7 29.Qd1? g5?? 30.Ng4?? Nf3 31.gf3 Bg4 32.hg4 Be5 33.Qb3–/+ Qg7 34.Qd5 Rf8 35.Nc4 Bc7 36.Kg2 Ne2-+ 37.Qc6?? Qf7 38.Rf1 Qf4 (39.Qc7 Qc7-+) 0–1. Kuhlmann,Antonius Egidius J – Cassel,David, corr, 1987.

4.cb5 Bc5 5.Bb2 d6 6.e3 c6 7.a4 Bd7 8.Nc3 Nf6 9.h3 0-0 10.Nf3 h6 11.Qc2 Nd5 (better 11...cb5 12.ab5 Ra1 13.Ba1 Qc7=) 12.Nd5+- cd5 13.Ne5! de5 (13...Be6 14.Be2+-) 14.Qc5 Be6 15.Qb4 b6 (better 15...Nd7!?+-) 16.Be5+- Nd7 17.Bc3 Nc5 18.a5 Ne4 19.a6 Nc3 (19...Qg5 20.Bd4 Rfc8 21.g3+- (21.Bb6? Qh4 22.Qe4 de4-+)) 20.dc3 Qc7 (20...Bf5 21.Qd4+-) 21.Bd3 Rfc8 22.Qd4 Qc3 (22...Bd7 23.0-0+-) 23.Qc3 Rc3 24.Kd2 Rb3 25.Rhb1 d4 (25...Rb1 26.Rb1 Bd7+-) 26.Rb3 Bb3 27.ed4 g6 (27...Bd5 28.f3 Ra7 29.Rc1+-) 28.f3 f5 (28...Be6 29.a7 f5 30.Kc3+-) 29.Rc1 Be6 (29...Kf7 30.Rc6+-) 30.Rc6 Rb8 (30...Bf7+-) 31.Re6 1–0. Ddgs – Shatri, internet, 2019.

4.cb5 Bc5 5.Bb2 d6 6.e3 Nf6 7.a4 0-0 8.Qb3 Be6 9.Qc2 Bb4 10.Nf3 h6 11.Bc4 Bc4 12.Qc4 Ba5 (12...c5 13.bc6 Nc6 14.0-0=+) 13.0-0 Nbd7 14.Nc3 Nc5 (14...Nb6 15.Qb3=+) 15.Nd5 (15.d4 ed4 16.ed4 Ncd7=) 15...Nd5=+ 16.Qd5 Rb8 (better 16...e4 17.Nd4 Qe7=+ (worse 17...Bd2 18.Nf5+-)) 17.Ne5+- c6 (17...Qg5!?+-) 18.bc6+- bc6? (better 18...Qc7 19.cb7 Qb7 20.Qb7 Rb7+-) 19.Nc6 Qb6 (19...Qg5 20.Qg5 hg5 21.Nb8 (21.Na5?! Rb2 22.d4 Ne4+-) 21...Rb8 22.Bc3 Bc3 23.dc3+-) 20.Bd4 Rb7 (20...Qc7 21.Nb8 Rb8 22.Rac1+-) 21.Bc5 (21.Qd6 Rc8 22.Qe5 f6 23.Qd5 Kh8 24.Na5 Qa5 25.Bc5 Rb4+-) 21...Qc5 22.Qc5 dc5 23.Na5 Rb2 (23...Ra7 24.Nc4+-) 24.Nc4 Rc2 25.Rfc1 Rc1 26.Rc1 Ra8 27.a5 f6 (27...g6 28.Rb1+-) 28.Rb1 Kf7 (28...h5 29.Rb7+-) 29.Rb7 (29.Rb5 Ke6 30.Rc5 Kd7+-) 29...Kg6 (29...Ke6 30.Rg7 Rb8 31.f4+-) 30.Kf1 h5 31.Ke2 Kh6 (31...h4 32.Rc7+-) 32.Rc7 g6 33.Rc5 f5 (33...Ra6 34.d4+-) 34.Rc6 Kg5 (34...h4 35.a6 Ra7 36.Ne5+-) 35.Ne5 Rg8 (35...Kh6 36.Rg6 Kh7+-) 36.Nf7 Kh4 (36...Kg4 37.Rc4 f4 38.Rf4) 37.Rc4 (37.Rc4 f4 38.Rf4) 1–0. Janek – Mrx, internet, 2018.

4.cb5 Bc5 5.e3 Qe7 6.Bb2 Nf6 7.Nf3 d6 8.Be2 0-0 9.0-0 Be6 10.d4 ed4 11.Nd4 Ra2 (11...Bd4 12.Bd4 Ra2 13.Ra2 Ba2 14.Qc2 Bb1 15.Rb1=) 12.Ne6+= Qe6 (12...Ra1!? 13.Nf8 Ra7 14.Nh7 Kh7+=) 13.Ra2+/- Qa2 14.Bf6 gf6 15.Bf3 (15.Bd3 f5+/-) 15...c6+= 16.Be4 Re8 17.Qg4 Kf8 18.bc6 Nc6 (18...bc6 19.Bh7 Ke7 20.Bf5+=) 19.Qh4 Qe6 20.Qh6 Ke7 21.Qh7 Ne5 (better 21...d5!? 22.Bf5 Qd6+/-) 22.Nc3+- 1-0. DEFFM – GuestCCTL, freechess.org, 2021.

4.cb5 Bc5 5.e3 Qf6 6.Bb2 d5 7.Nf3 d4 8.ed4 ed4 9.Qc2 Bg4?? (better 9...Nd7=) 10.Qc5+- Bf3 11.gf3 Qe6 (11...Ra2 12.Bd4 Qe6 13.Be2 Ra1 14.Ba1+-) 12.Kd1 Ne7 13.Bd3 0-0 (13...Nd7 14.Qd4 f6+-) 14.Re1 Nd7 (14...Qd5 15.Qe7 Qf3 16.Qe2+-) 15.Qd4 Qf6 16.Re7 Qf3 17.Be2 Qh1 18.Kc2 Nf6 19.Qh4 Rae8 (19...Rfe8 20.Bf6 gf6 21.Rc7+-) 20.Bf6 Re7 21.Bd3 g6 22.Qh6 (22.Qh6 Qd1 23.Kd1 Re1 24.Kc2 Rc1 25.Kc1 Re8 26.Qg7) 1-0. DEFFM – GuestQQBF, freechess.org, 2021.

4.cb5 Bc5 5.e3 Nf6 6.Bb2 d6 7.Nf3 0-0 8.Qc2 Re8 (8...e4 9.Nd4+=) 9.Nc3 (9.Ne5 Qe7 10.Nf3 Bg4+=) 9...c6 10.a4 Qb6 (10...Nbd7 11.Be2+=) 11.Bd3 (11.Be2 Bg4=) 11...d5 12.Nd5? (12.a5 Ra5 13.Ra5 Qa5 14.Be2–/+) 12...cd5-+ (12...Nd5?! 13.Ne5 cb5 14.Rc1+=) 13.Be5 (13.Ne5 Nbd7 14.Nd7 Bd7-+ (14...Nd7?! 15.Bh7 Kf8 16.0-0–/+)) 13...Nbd7 14.Bf6 (14.Bb2 Qd6-+) 14...Nf6 (14...gf6?! 15.Bh7 Kg7 16.0-0–/+) 15.Ng5 (15.0-0 Bd6-+) 15...g6 (15...h6!? 16.Nf3-+) 16.0-0 Bd7 (16...Be7 17.f4 Nh5 18.Qb3-+) 17.Qc3? (17.a5 Qd6-+) 17...d4 (better is 17...Qd6!? 18.Rfc1 Rec8 19.Qb2-+) 18.Qb3 Be6 (18...Re7 19.Bc4 Be8 20.h3-+) 19.Ne6 (19.Bc4 de3 20.de3 Bc4 21.Qc4 Qc7-+) 19...Re6 (19...Qe6?! 20.Qe6 Re6 21.a5–/+) 20.Bc4 (20.h3 Qa5-+) 20...Re7 (20...de3?! 21.fe3 Be3 22.Kh1–/+ (22.de3?? Re3 23.Kh1 Rb3 24.Bb3 Kg7-+)) 21.Rfe1 (21.Qc2 Bd6-+) 21...de3 (21...Ne4!? 22.Re2-+) 22.de3 Rf8 (22...Ng4 23.Bd5-+) 23.Qc3? (better is 23.a5 Qd6 24.Red1–/+) 23...Ne4-+ 24.Qc2 Qf6 25.Rac1 Bb4 26.Red1 Ra8 (26...Ba3 27.Ra1 Bc5 28.Bd5-+) 27.Bd5? (better is 27.Rd4 Ba3 28.Rcd1–/+) 27...Nc3-+ 28.Rd4 Nd5 (28...Rc7!? 29.Bc4-+) 29.Rd5 Qe6 30.Rcd1 (30.Qd1 Ba3 31.Rc4 Ree8-+) 30...Ba5 (30...Ree8 31.R5d4 Rec8 32.Qb1-+) 31.g3 Rc8 32.Qb2 Bc7 33.Qd2 h5 34.f4? (better is 34.Qb4-+) 34...Qe3 35.Qe3 Re3 36.Rc1 Re7 37.Kf1 Ra8 38.Rc4 Rae8 39.Rd3 (39.Rc1 Kg7-+) 39...Bb6 (better is 39...Re1 40.Kg2 R8e2 41.Kf3-+) 40.Rc1 (40.Rc2-+) 40...Re2 41.Rf3 (41.Rd6 Rf2 42.Kg1 Rc2 43.Rb6 Rc1 44.Kf2 Rc2 45.Kf3 Rh2-+) 41...Rh2 42.Rc4 (42.a5 Ba5 43.Rd3 Rh1 44.Kg2 Rc1 45.Kf3-+) 42...Ree2 0–1. Kasachev,Yuriy – Basov,Gennady, Astrakhan Open, 2011.

4.cb5 d6 5.e4 Bd7 (5...Nf6 6.Nc3=+) 6.Nc3= h6 7.Bb2 Nf6 8.Nf3 c6 (8...Bg4 9.d4=) 9.a4 Ra5 10.Be2 Bg4 11.d4 Bf3 12.Bf3 Nbd7 13.0-0 Nb6 14.Qd3 d5 (14...Be7 15.bc6 ed4 16.c7 Qc7 17.Qd4+/–) 15.ed5 cd5 16.de5 d4?? (16...Nc4 17.ef6 Ne5+-) 17.ef6+- dc3 (17...Qf6 18.Ne4 Qd8 19.Rfd1+-) 18.Rfe1 Be7 19.Re7 Qe7 20.fe7 Ke7 (20...Nd5 21.Qd5 Ke7 22.Re1 Kf6 23.Bc3 Kg6 24.Be4 f5 25.Qf5) 21.Re1 Kf6 22.Qc3 Kg6 (22...Kf5 23.Qg7 Ra4 24.Qf6) 23.Qg7 Kf5 24.Qf6 1–0. Taulien,Hans_Juergen – Kirstein,Michael, remoteschach.de, 2002.

4.cb5 e4 5.Bb2 d5 6.e3 Nf6 7.d3 c6 8.Nc3 Bb4 9.Nge2 0-0 10.d4 Nbd7 11.Ng3 (11.Qb3 Bd6–/+) 11...g6 (11...Qa5 12.Qc2–/+) 12.Be2 h5 13.Qb3 (13.h4 Nb6 14.Qb3 Bd6–/+) 13...Ba5 (13...Bd6 14.a4=+) 14.h4 (14.Ba3 Re8 15.h4 Nb6 16.bc6 bc6–/+) 14...c5 15.Kf1 (15.Ba3!? cd4 16.ed4–/+) 15...c4–/+ 16.Qc2 Re8 17.Kg1 Bb4 (17...Qc7 18.a4–/+) 18.a4 (18.a3 Bd6–/+) 18...Ba5 (18...Qc7 19.Ba3 Ba5 20.Qb2–/+) 19.Ba3 (19.Kh2 b6–/+) 19...Bc3-+ 20.Qc3 Ra4 21.Bb4 (21.Bd1 Ra8-+) 21...Ra1-+ 22.Qa1 Nf8 23.Qa7 b6 24.Qb8 Ng4 25.Qa8 (better 25.Nf1-+) 25...Nf6 (25...Be6 26.Qa6-+) 26.Qb8 Ng4 27.Qa8 Nh7 (27...Be6 28.Qa6-+) 28.Bd1 Ngf6 (28...Nhf6 29.Ne2–/+) 29.Ne2 (29.Qa7 Bd7-+) 29...Bg4-+ 30.Qd8 Rd8 31.Kh2 Be2 32.Be2 Ra8 33.Kg3 Nf8 (33...Ra2 34.Re1-+) 34.Rd1 Ra4 (34...Kg7 35.Rd2-+) 35.Be7 N6d7 36.f3 Ra2 37.Kf2 ef3 38.gf3 Ne6 39.Ke1 (39.Bd6 f5-+) 39...Ra5 (39...Rb2 40.Ra1–/+) 40.e4 (40.Rb1 f5-+) 40...Nc7 (40...Rb5 41.ed5 Rd5 42.Bc4 Rd4 43.Rd4 Nd4 44.f4-+) 41.Rc1–/+ Nb5 42.ed5 Nd4 43.Bc4 Nf3 44.Ke2 Nfe5 45.Bb3 Rb5 46.Rc3 Nc5 47.Bc2 Ned7 48.Kf3 (48.Rc4 f5-+) 48...Kg7-+ 49.Bd6 Rb4 50.Bg3 f5 51.Re3 Kf7 52.Re1 (52.Re2 Rd4 53.Bb1 Ne4 (53...Rd5? 54.Ba2 Nf6 55.Re5+-) 54.Be4 fe4 (54...Re4?! 55.Re4 fe4 56.Ke4=) 55.Re4 Rd5-+) 52...b5 53.Bb1 (53.Re2 Rc4 54.d6 Kf6-+) 53...Rb3 54.Kg2 Nf6 55.d6 (55.Rc1 Nd5 56.Rc5 Ne3 (56...Rb1?! 57.Rd5 Rb2 58.Kf3=) 57.Kf3 Nc4 (57...Rb1?! 58.Ke3 Rb3 59.Kf4=) 58.Kg2 Rb1-+) 55...Rb2 56.Kg1 (56.Kh3 Ng4-+) 56...Nfe4 57.Be5 (57.Be4 Ne4 (worse 57...fe4 58.Rc1 Nd7 59.Kf1-+) 58.Bf4 Rb4-+) 57...Rd2 58.Bf4 Rd4 59.Be3 (59.Be5 Ra4 60.Re2 b4 61.Be4 Ne4-+ (worse 61...fe4 62.Bd4 Ne6 63.d7-+)) 59…Rd6 0–1. Gdds – Wouck, internet, 2019.

4.cb5 Qf6 5.Bb2 Bc5 (5...d5!?=+) 6.Nf3= d6 7.e3 Bg4 8.Be2 Bf3 (8...Ne7!?=) 9.Bf3+= Ra7 (9...c6 10.Qb3 Qe7 11.0-0+=) 10.0-0 c6 11.a4 (11.d4 ed4 12.ed4+/–) 11...Qh4? (11...Ne7!?+=) 12.Nc3 (12.d4 Bb6 13.de5 d5+-) 12...Qb4 (12...Bb4!?+/–) 13.Ba3 Qc4 (13...Qa5 14.bc6 bc6 15.Qb3+-) 14.Be2 (better is 14.Bc5!? dc5 15.bc6 bc6 16.Qb1+-) 14...Qe6 15.Bc5 dc5 16.Ne4 Nf6 17.Nc5 Qd5 (better is 17...Qe7!? 18.b6 Ra8+-) 18.b6+- Ra6? (18...Qc5 19.ba7 Qa7+-) 19.Ba6 ba6 (19...Qc5 20.Bb7 Qb6 21.Qb1+-) 20.d4 ed4 21.Qd4 Qg5 (21...Nbd7 22.b7 Nb8 23.Rfe1 Qd4 24.ed4 Kd8 25.Re5+-) 22.f4 (better is 22.Qd6 Nfd7 23.Nd7 Nd7 24.b7+-) 22...Qh5 (22...Qd5+-) 23.Qd6 Ng4 (23...Nbd7 24.Nd7 Ng4+-) 24.Qb8 Ke7 25.Qc7 Ke8 26.Qc6 Kd8 27.Qd7# 1–0. qarqua – jebiga, Live Game Caissa's Web, 2004.

4.cb5 Qf6 5.Nc3 c6 6.Qc2 cb5?? (better is 6...Ne7=) 7.Nd5+- (7.Nb5?! Na6=) 7...Qd6?? (7...Qc6 8.Qc6 bc6 (8...Nc6?? 9.Nc7 Kd8 10.Na8+-) 9.Nc7 Kd8 10.Na8 Bb7+-) 8.Qc8# 1–0. ilmarinens (2765) – mdf (1805), net–chess.com, 2006.

4.cb5 Qf6 5.Nc3 Qe6 6.g3 Nf6 (6...Bc5 7.Bh3 Qb6 8.e3=+) 7.Bh3 Qe7 8.Nf3 e4 9.Nh4 b6 (9...Qd8 10.d3 d5 11.Bc8 Qc8 12.de4 de4 13.Bg5=) 10.Bb2 g5 (better is 10...Qd8!?=) 11.Nf5+/– Qd8? (better is 11...Qb4 12.Qc2 Qc5+/–) 12.Ne4!+- (12...Ne4 13.Bh8+-) 1–0. ilmarinens (2765) – ajeffries (1910), net–chess.com, 2006.

4.cb5 g6 5.Bb2 Bg7 6.Nf3 d6 7.e4 Be6 8.Nc3 (8.d4 Ra2 9.Ra2 Ba2=) 8...Nd7 (8...Nf6 9.d4 ed4 10.Nd4=) 9.Be2 (9.d4 Ngf6=) 9...Nh6 (9...Qf6 10.0-0=) 10.d4+= f5 (10...0-0 11.d5 Bg4 12.h3 Bf3 13.Bf3=) 11.d5= Bf7 12.h4 (12.Bc1 fe4 13.Bg5 Bf6 14.Ne4 Bg5 15.Nfg5 0-0=) 12...Nc5 13.Ng5 0-0 14.Bc1 fe4 15.Nce4 Nf5 16.h5 Nd4 (16...Ne4!? 17.Ne4 Nd4=) 17.Nf7+= Rf7 18.Nc5 (18.Bg5 Qd7 19.Nc5 dc5 20.hg6 hg6=) 18...dc5 19.hg6 hg6 20.Bc4 Qd6 21.Be3 (21.Qd3 Ra5+/–) 21...e4 22.Rc1 Nf5 23.Rh3 (23.Bg5 Nd4+=) 23...Ne3= 24.fe3 (< 24.Re3 Bh6 25.Re4 Re7 26.Re7 Qe7 27.Kf1 Qh4=+) 24...Raf8 (24...Ra3 25.Qg4+/–) 25.Rc2 (25.Qg4 Bb2 26.Rc2 Be5+/–) 25...Qf6 26.d6 cd6 (26...Qf1 27.Bf1 Rf1 28.Kd2 Rd1 29.Kd1 cd6+/–) 27.Qg4?? (better is 27.Qe2+=) 27...d5!-+ 28.Bd5 Qf1 29.Kd2 Qd3 30.Kc1 Qd5 31.Rd2 Rf1 32.Rd1 Qc4 33.Kb1 Qd3 34.Kc1 Qc3 (35.Kb1 Qb2#) 0–1. Neuwald,Volker – Haas,Michael, Baden HT opA, 2001.

4.cb5 g6 5.Nf3 Bg7 6.Bb2 d6=.

5.a4 cb5–/+ 6.Nc3 ba4 7.Na4?? (better is 7.Ra4 Ra4 8.Qa4–/+) 7…b5-+ (8.Bb2 ba4 9.Ra4 Ra4 10.Qa4 f6-+) 0–1. Cyr – Wall,Bill, Microsoft Gaming Zone, 1996.

5.Bb2 d6 6.a4 cb5 7.ab5 Ra1 8.Ba1 Nf6 9.Nc3 (9.Nf3 Be7=+) 9...Be7 (9...d5 10.e3=+) 10.g3 (10.e4 d5 11.ed5 Nd5=+) 10...0-0 (10...d5 11.Bg2–/+) 11.Bg2 (11.Nf3 Nbd7=+) 11...d5–/+ 12.e3 (12.Qc2–/+) 12...Nbd7 (12...Re8 13.Nge2=+) 13.Nd5 (13.Bd5 Nc5 14.Bc4 Be6 15.Be6 Nd3 16.Ke2 fe6=) 13...Nd5=+ 14.Bd5 Nf6 (14...Nc5!? 15.e4 Be6 16.Be6 Nd3 17.Ke2 fe6=) 15.Bg2+= Qb6 (15...Nd7 16.Ne2+=) 16.Qb1 Bd7 (16...Qc5 17.Nf3 e4 18.Nd4+/–) 17.Be5+/– Qb5 (17...Rc8+/–) 18.Qa1?? (better is 18.Qb5 Bb5 19.Bb7+-) 18...Bc6+= 19.Nf3 (19.f3 Rd8+=) 19...Bf3 (better is 19...Be4!?=) 20.Bf3+/– (20...Rc8 21.Bd4+/–) 1–0. knightprancer – cccmember, playchess.de, 2004.

5.Bb2 d6 6.a4 cb5 7.e3 Ra4?? (better is 7...b4–/+) 8.Bb5+- (8.Bb5 Nc6 9.Ra4+-) 1–0. pereira – psnp, internet, 2016.

5.Bb2 d6 6.a4 Nf6 7.Nf3 =+.

5.Bb2 d6 6.d4 Qa5 7.Qd2 Qb5 8.e4 Qa5 9.Qa5 Ra5 10.Nd2 ed4 11.Bd4 Nf6 12.Nc4 Ra4 13.Nf3 Ne4 (better is 13...Be6!? 14.Nb6 Ra2 15.Ra2 Ba2 16.Bf6 gf6-+) 14.Nb6=+ Rd4 15.Nd4 Be6 16.f3 Nc3 (16...Nc5 17.Ne6 fe6 18.a4=+) 17.Ne6= fe6 18.Kd2 Nd5? (better is 18...g6!? 19.Re1 Na2=) 19.Nd5+/– ed5 20.Rb1 b5 21.a4 (21...g6 22.ab5 Bh6 23.Kc2+/–) 1–0. Trkn – guest2949, ICC, 2004.

5.Bb2 d6 6.d4 ed4 7.Qd4 Nf6=.

5.Bb2 f6=.

5.e3 cb5 6.Bb5 Ra5 7.a4 (7.Nc3 Nc6=) 7...Ne7 (7...Nc6 8.Bb2=) 8.Ba3 (8.d4 ed4 9.ed4 Nec6=) 8...Nf5 (8...Nbc6 9.Ne2=) 9.Bf8 Kf8 10.Qf3 (10.d4 ed4 11.g4 Nh6 12.Qd4 d5=) 10...Nd6 (10...d5 11.Nc3=) 11.Be2 (11.Nc3 Nb5 12.Nb5 d5=) 11...b5 (11...Qh4 12.g3 Qe7 13.Nc3=) 12.Bd1 (12.Qd5 Qf6 13.Qc5 Bb7=) 12...Qc7 13.Nc3 (13.Ne2 Bb7 14.Qg3 Bc6=+) 13...b4 (13...Bb7 14.Qg4=+) 14.Nd5 (14.Nce2 Bb7 15.Qg4 Na6=+) 14...Qc5 15.Bb3 Ba6 (15...Bb7 16.e4=+) 16.Nh3 (16.Qg4!?=) 16...Bc4=+ 17.Bc2?? (better is 17.Bc4 Qc4 18.e4 Ne4 19.d3 Qd5 20.de4–/+) 17...Bd5-+ 18.Qg4 Qc2 19.Qb4 Qc7 20.0-0 Na6 21.Qc3 Nc4 22.Rfc1 Rc5 23.Qd3 Qc6 (24.f3 Nb2-+) 0–1. riverborne – TimeKeeper, Live Game Caissa's Web, 2006.

5.e3 d5 6.Bb2 Bd6 7.Be2 (7.Nf3 Nd7=+) 7...Bf5 8.a4 (8.Nf3 Nd7=+) 8...Nf6 (8...c5 9.Nf3 Nd7 10.d4 ed4 11.ed4=+) 9.Nf3 Nbd7 (9...Qc7 10.b6 Qe7 11.a5=+) 10.h3 (10.bc6 bc6 11.0-0 0-0=+) 10...0-0 (10...c5 11.0-0–/+) 11.d3 (11.bc6 bc6 12.0-0 c5=+) 11...e4 (11...Qb6!? 12.d4 e4–/+) 12.de4=+ Bb4 (12...Ne4 13.0-0=+) 13.Nbd2 (13.Bc3 Bc3 14.Nc3 Ne4 (< 14...de4 15.Nd4 Qa5 16.Rc1+=) 15.Ne4 Be4=) 13...Ne4=+ (< 13...de4 14.Nd4 Be6 15.bc6 bc6 16.Nc6+=; 13...Be4?! 14.bc6 bc6 15.0-0=) 14.0-0 Re8 (better is 14...Nc3!? 15.Bc3 Bc3=+) 15.Ne4+= Be4 (15...de4? 16.Nd4 Be6 17.bc6 bc6 18.Nc6+-) 16.Bd3 (16.Bg7 Bf3 17.Bf3 Kg7 18.Qd4 Ne5 19.Qb4 Nf3 20.gf3 Re6+=) 16...Nf6 (16...c5 17.Ne1=+) 17.bc6 (17.Rc1 c5=+) 17...bc6 18.Be4 Ne4 (18...de4 19.Nd4 c5 20.Nf5=) 19.Nd4 (19.Bg7!? Kg7 20.Qd4 Kg8 21.Qb4+/–) 19...Qb6 (19...Qd7 20.Qd3=+) 20.Nf5= g6 (20...Bf8 21.Ra2 c5 22.f3=+) 21.Nh6 Kf8 22.Qf3 (better is 22.Qd3=) 22...Ng5?? (better is 22...f5 23.Rfc1 Bc5=) 23.Qf6+- Qd8 (23...Reb8+-) 24.Qg7 (24...Ke7 25.Bf6 Ke6 26.Bd8 Rad8 27.f4+-) 1–0. secgestor – chess55555, internet, 2007.

5.e3 Nf6 6.Bb2 Bd6 7.Nf3 Qc7 8.Qc2 (8.Qb3 0-0+=) 8...0-0= 9.Bd3 g6 (9...Re8 10.Nc3=) 10.Nc3 (better 10.0-0+=) 10...cb5 (better 10...Be7=) 11.Nb5+/- (11.Bb5?! Be7+=) 11...Qc2 12.Bc2 e4?? (better 12...Be7 13.Be5 Nc6+/-) 13.Nd6+- ef3 14.Bf6 1-0. DEFFM – GuestCXFG, freechess.org, 2021.

5.e3 Qg5 6.Nf3= Qf5 7.Be2 e4 8.Nd4 Qg5 9.g3 (9.0-0 c5 10.f4 Qg6=) 9...Qe5 (9...c5 10.Nc2+=) 10.Nc3 Bc5 11.0-0 (11.Nb3!? Bb4 12.Bb2=) 11...Bd4+= 12.ed4 Qd4 13.Qa4?? (better is 13.Qc2 d5 14.d3+=) 13...Ra4-+ 14.Bb2 (14.Na4 Qa4 15.d3 d5-+) 14...Qd2 (better is 14...Ra5 15.Nd1 Qd2 16.Bg7 Qe2 17.Nc3-+) 15.Na4 f6 (15...Ne7 16.Bc4 Qb4 17.Bb3-+) 16.Bc4 (16.Rfe1 d5-+) 16...d5 17.Bc3 Qc2 (17...dc4 18.Bd2 Ne7 19.b6+=) 18.Bb3 Qe2 19.Bd1 (19.bc6 bc6 20.f3 e3-+) 19...Qb5 20.Bc2 (20.Rb1 Qa6-+) 20...Bh3 21.Rfd1 (21.Rfe1 Nd7 22.Bd1-+) 21...Qe2 22.Bd3 Qf3 23.Bf1 Bf1 24.Rf1 b5 25.Bd4 (25.Rae1 ba4 26.Re3 Qh5-+) 25...ba4 26.Be3 Na6 27.a3 c5 (27...h5 28.Rfe1 h4 29.Ra2-+) 28.Rac1 d4 29.Bf4 g5 30.Bd6 Qa3 (better is 30...h5 31.Rfe1-+) 31.Rc4 Kd7 (better is 31...Qb3 32.Rc5 Nc5 33.Bc5-+) 32.Bf8 Ne7 33.Bg7 Qb3 34.Rfc1 Rg8 35.Bf6 a3 (better is 35...Nf5 36.h3-+) 36.Bd4 cd4 37.Rd4 Nd5 38.Rcd1 Nab4 39.Kg2 a2 40.Kh3 Qb1 (40...Nd3 41.R1d3 ed3-+) 41.Rb4 Qd1 42.f3 (42.Rb7 Ke6 43.Rb6 Kf5 44.Rf6 Nf6 45.Kg2 a1Q 46.h3 Qg1#) 42...a1Q (42...Qf1 43.Kg4 Qf3 44.Kh3 Nf4#) 43.Re4 (43.Rd4 Qf1 44.Kg4 Qf3 45.Kh3 Qaf1#) 43...Qf1 44.Kg4 Nf6 45.Kf5 Qf3 46.Rf4 Qa5 (46...Qd5#) 47.Kf6 Rg6 (47...Qc6 48.Kf7 Qe6#) 48.Kf7 Qfd5 49.Kf8 Qaa8# (49...Qd8#) 0–1. harry74 – spensley, gameknot.com, 2013.

5.e4 Bc5 6.Nf3 d6 (6...Nf6 A) 7.Ne5? Bd4 (7...Ne4?! 8.Qf3 Ng5 9.Qg3–/+) 8.Nc3 Be5-+; B) 7.d4 ed4 8.Bd3=+) 7.h3 (7.d4 ed4 8.Nd4 Nf6=+) 7...Nf6=+ 8.Nc3 h6 (8...0-0 9.bc6 Nc6 10.Bc4=+) 9.Be2 0-0 10.0-0 (10.Qc2 Be6=+) 10...Be6 (10...d5 11.Qc2=+) 11.a4 (11.Bb2 Ba3 12.Qc2 Bb2 13.Qb2 c5=+) 11...Qd7 (11...cb5 12.Bb5 Qa5 13.Qe2=+) 12.d4 Bb4 13.Na2 Ba2 14.Ra2 Ne4 15.Bb2 (better is 15.Qb3 Nc3 16.Rc2=+) 15...f6?? (better is 15...Qe6 16.Qb1 Nc3 17.Bc3 Bc3 18.de5 Be5=+) 16.de5?? (better is 16.Qb3 Qf7 17.Qb4 ed4 18.Qd4+-) 16...Qe6+= 17.Ra1 d5 18.ef6 Nf6 19.Qb3 Bc5 20.Bd3+= b6 21.Ba3 Ne4 22.Be4+= Qe4 23.Bc5 bc5 24.b6 Na6 25.b7 Rab8+= 26.Qb6 Nb4 27.a5 Qg6 28.a6 Na6 29.Ne5 Qd6= 30.Nc6 Nb4=+ 31.Rfb1? Nc6-+ 32.Ra6 Rf6 33.Ra8 d4?? 34.Qc6!+- Qf4 35.Rb8 Qb8 36.Qc8 Rf8 37.Qc5 Rd8 38.g3 d3+/– 39.Qc4 Kh8 40.Qb5 d2 41.Rd1 Qc7 42.Rd2 Qc1 43.Kg2 Qd2 44.b8Q Rb8 45.Qb8 Kh7 46.Qb7 Qe2 47.h4 Qe6 48.f3 Qe2 49.Kh3 Qd1 50.Qf7 Qf1 51.Kg4 Qd3? 52.Qf5+- Qf5 53.Kf5 h5 54.Kg5 g6 55.f4 Kg7 56.f5 gf5 57.Kf5 Kh6 58.Kf6 (58...Kh7 59.Kg5+-) 1–0. sportsmaniac (2290) – ventinovesettembre (2360), net–chess.com, 2007.

5.a4 Nf6 6.Nf3 e4 7.Nd4 c5 8.bc6 Nc6 9.Bb2 Bc5 10.e3 (10.Nb3 Bd6-/+) 10...Bd4 (10...0-0 11.Nb3 Bb6 12.a5 Na5 13.Be2-/+) 11.Bd4-/+ Nd4 12.ed4 Qb6 13.Bb5 Bd7 14.Nc3 Qd4 15.0-0 0-0 16.Qb3 (16.Qe2 Bb5 17.ab5 Qb6-+) 16...Bb5 17.ab5 g6 (17...Qd2?! 18.Rad1 Qg5 19.Nd5 Nd5 20.Rd5-/+) 18.b6 (18.Ra2 Ra2 19.Qa2 Rc8-+) 18...Ra1 (18...Qd2?! 19.Rad1 Qg5 20.Nd5-/+) 19.Ra1 Ng4 (19...Qd2?! 20.Rd1 Qg5 21.Nd5-/+) 20.Qd5?? (20.Rf1 Rd8 21.h3-+) 20...Qf2 21.Kh1 Qf4 22.g3 (22.Kg1 Qh2 23.Kf1 Qh1 24.Ke2 Qa1 25.Qe4 Qa6 26.Ke1-+) 22...Qf3 23.Kg1 Qf2 24.Kh1 Qh2 0-1. Bushwacker (1795) - Zona (2640), ChessWorld.net, 2008.

5.a4 Nf6 6.h3 Bd6 7.e3 0-0 8.Nf3 Qe7 9.Nc3 d4 10.Ne2 Ne4 11.Ng3? (better is 11.Bb2!? de3 12.fe3-+) 11...Ng3-+ 12.fg3 e4 13.Nd4 Bg3 14.Ke2 c5 15.bc6 Qe5 16.d3 ed3 17.Kd2 Qa5 18.Kd3 Nc6 19.Bd2 Bf5 20.Kc4 Qb6 21.Nf5 (21.Nb5-+) 21...Ne5 22.Kd5 Qc6 23.Kd4 Rfd8 24.Nd6 Rd6 0–1. peteywheatstraw (1620) – temur (2200), gameknot.com, 2012.

5.Bb2 d4 6.a4 c5 7.e3 d3 8.Qb3 (better 8.Be5!? c4 9.Nf3=) 8...e4=+ 9.f3 f5 (9...Be6 10.Qd1-/+) 10.Nc3=+ Nf6 11.fe4 fe4 (worse 11...Ne4 12.Nf3+/-) 12.Nd1 (12.Nh3 Qe7=+) 12...Qc7 13.Bf6 gf6 14.Nc3 c4 (14...f5 15.Nd5 Qe5 16.Rc1-/+) 15.Qb2 (15.Qa2 Bf5=+) 15...Bf5 (better 15...Qe5-/+) 16.h3?? (better 16.Nd5 Qd8 17.Nf6 Kf7 18.Ne8=) 16...Qg3-+ 17.Kd1 Nd7 18.Nd5 Rc8 (better 18...Bd6 19.a5 Qf2-+) 19.Nf6-/+ Nf6 20.Qf6 Qg7 21.Qf5?? (21.Qc3 Be6 22.Ra2-+) 21…Qa1 0-1. MCHpenguin2 (2315) - zsolti_83 (2410), Rated Bullet game, lichess.org, 2019. (=1.c3 a5 2.b4 ab4 3.cb4 e5 4.b5 d5 5.Bb2)

5.Bb2 d4 6.e3=+ de3 7.fe3 (7.de3 Qd1 8.Kd1 Nd7=+) 7...Bd6 8.Qc2 (8.Nf3 Nd7=+) 8...Nf6 (8...Be6 9.Nf3 Nd7 10.Nc3=+) 9.Nf3= 0-0 (9...Nbd7 10.Bc4=) 10.Bc4 (10.Ne5 Nbd7 11.Nc4 Be7+=) 10...Be6 (10...Nbd7 11.Nc3=) 11.0-0 (11.Be5 Bc4 12.Bd6 Qd6 13.Qc4 Nbd7+=) 11...Nbd7 (11...Bc4 12.Qc4 e4 13.Ng5 Bh2 14.Kh1=+) 12.Ng5 (12.Be6!? fe6 13.Nc3=) 12...Bc4=+ 13.Qc4 Nb6 (13...h6 14.Ne4=+) 14.Qd3 (14.Qc2 Re8=) 14...h6 (14...e4 15.Qe2 Nbd5 16.Nc3=+) 15.Ne4 (15.Rf6 hg5 16.Rf5 Na4+=) 15...Ne4 16.Qe4 Ra7 (16...Qc8 17.a4= (< 17.Be5 Qe8 18.Rf5 f6-+)) 17.Nc3 (17.a4 Nd7=) 17...Nd7 (17...Qd7 18.d4=) 18.Nd5 (18.Qf5 Nf6=) 18...Nc5 (better is 18...Ra5=) 19.Be5?? (better is 19.Qf5 Qg5 20.d4 Qf5 21.Rf5 ed4 22.Bd4=) 19...Ne4-+ 20.Rab1 Be5 21.Nf4 Qd2 22.b6 Qe3 23.Kh1 Nf2 24.Rf2 Qf2 25.Nd3 Qc2 26.Ne1 Qb1 27.g3 Ra2 28.bc7 Qe1 0–1. Jolilein – ketchuplover, mySchach.de, 2005.

5.Bb2 f6 6.e3 b6 7.Nc3 Bb7 8.Nf3 c6 9.a4 Nd7 10.Be2 Bc5 11.0-0 Nh6 12.Ba3 e4 13.Bc5 ef3 14.Bf3 Nc5 15.d4 Ne6 16.bc6 Bc6 17.Qb3 Ra5 18.Rfb1 Ra6 19.Bd5 Bd5 20.Qb5 Qd7 21.Qa6 0-0 22.Nd5 Qd5 23.Rb6 Ng5 24.Qb5 Qa8 25.Rb1 Qe4 26.a5 Nf5 27.Qb3 Nf7 28.Rb8 Ne3 29.fe3 f5 30.Rf8 Kf8 31.Qb8 Ke7 32.Qb7 Qb7 33.Rb7 Kd8 34.Rf7 Kc8 35.Rg7 Kb8 36.Rh7 Kc8 37.a6 Kb8 38.d5 f4 39.Rb7 Ka8 40.d6 f3 41.Rb1 f2 42.Kf2 Ka7 43.d7 Ka8 44.d8Q Ka7 45.Qb6 Ka8 46.Qb7# 1–0. NN – NN, 2008.

5.Bb2 f6 6.Nf3 (6.d4 e4=+) 6...Be6 (6...Bd6 7.Nc3 Ne7 8.e3=+) 7.e3 Nd7 (7...Bd6 8.Be2=+) 8.Be2 Bd6 9.a4 Ne7 10.0-0 0-0 11.Qc2 (11.d3 c5=+) 11...Qe8 (11...c5 12.bc6 Nc6 13.Rc1=+) 12.Nc3 Bf5 (12...c5 13.bc6 Nc6 14.Nb5=) 13.e4 de4 14.Ne4 (14.Bc4 Kh8 15.Ne4 Nb6=) 14...Qg6 (14...Nd5 15.Nh4 Be6 16.a5=) 15.Qc4 (15.Bc4 Kh8 16.Nh4 Qh5 17.Nf5 Qf5+=) 15...Kh8 (better is 15...Qf7!?=) 16.Nh4+/– Qh6 17.Nf5 (17.Nd6?! cd6 18.Nf5 Nf5+=) 17...Nf5 18.Qe6 Qg6?? (better is 18...Qf4 19.Qd7 Rfd8+=) 19.Nd6+- cd6 20.Qd7 Qg5 21.Bc3 Nh4 22.Qg4 Qh6 23.g3 Ng6 24.Qh5 (24...Qh5 25.Bh5+-; 24.Qd7 Rab8+-) 1–0. Neuwald,Volker – Nowack,Jost, Baden–ch AT Ladenburg, 1992.

5.d4 Bd6 =+.

5.d4 e4 6.Bf4 =+.

5.e3 b6 6.Bb2 Bd6 7.f4 Qe7 8.Nf3 Bg4 9.g3?? (9.h3 Bf3 10.Qf3 Nf6=) 9...Nf6?? (better is 9...e4 10.Be2 ef3 (10...Bf3?! 11.Bf3 Nf6 12.Be2=+) 11.Bf3 Bf3 12.Qf3 Nf6 13.Bf6 Qf6-+ (13...gf6?! 14.Nc3=+)) 10.Qb3?? (better is 10.fe5 Be5 11.Be5 Bf3 12.Qf3 Qe5 13.Nc3=) 10...Bf3-+ 11.Rg1 Nbd7 12.Bg2 Bg2 13.Rg2 0-0 14.Kf2 Nc5 15.Qc2 e4 16.g4 Nd3 17.Kg1 (17.Kf1 Bc5-+) 17...h6 (17...Ne1 18.Qc6 Ng2 19.g5-+) 18.Bc3 (18.Nc3 Qd7-+) 18...Ne1 19.d4 (19.Qb2 Ng2 20.Bf6-+) 19...Nc2 20.Rc2 Ng4 21.Bd2 Bb4 (better is 21...Qh4 22.Bc1 Qe1 23.Kg2-+) 22.Bb4 Qb4 23.Re2 Qc4 24.Re1 Qb5 (24...Qc2 25.Nd2 Qd2 26.Re2 Qe2 27.h4 Qf2 28.Kh1 Qh2) 25.Nc3 Qb2 26.Ne2 Ne3 (better is 26...Qd2 27.Kh1 Nf2 28.Kg2-+) 27.Rab1 Qa2 28.Kf2 Nf5 29.Kf1 Ra3 (29...Qa3 30.Nc3 Qc3 31.Rb3 Qb3 32.Rc1 Qf3 33.Ke1 Nd4 34.Kd2 Qd3 35.Ke1 Qe2) 30.Kg1 Re3 (30...Qd2 31.Kf1 Ne3 32.Kg1 Ng4 33.Kh1 Rh3 34.f5 Rh2 35.Kg1 Qe3 36.Kf1 Qf2) 31.Ra1 Qc4 32.Rac1 Qd3 33.Rcd1 Qd1 (33...Re2!? 34.Rd3 ed3 35.Rd1-+) 34.Rd1 Re2 35.Kh1 Ra8 36.Rg1 (36.Rf1 Raa2 37.Rc1 Rh2 38.Kg1 Rag2 39.Kf1 Ne3 40.Ke1 Re2) 36...Raa2 37.Rf1 (37.Rg4 Rh2 38.Kg1 Rhe2 39.Rg7 Kg7 40.Kf1 Ne3 41.Kg1 Re1) 37...Rh2 0–1. MasterofDisaster – Trijas, Live Game Caissa's Web, 2004.

5.e3 c6 6.Bb2 Bd6 7.a4 Ne7 8.Nf3 f6 (8...Nd7 9.Nc3–/+) 9.Nc3=+ Be6 10.Be2 Nd7 11.0-0 0-0 12.Qb3 Nc5 13.Qc2 Qd7 14.d4 ed4 (14...Bf5 15.Qd1 Ne6 16.Qb3=+) 15.Nd4 Nf5 (15...Bf7 16.f4=) 16.Ne6= Qe6 17.Bg4 g6 18.a5 h5 (18...Qe5 19.g3 d4 20.ed4 Nd4 21.Qd1+=) 19.Bf5+= gf5 20.Rfd1 Kf7 (better 20...Rac8!?+-) 21.a6!+- ba6 22.bc6 Rg8? (better 22...Rac8+-) 23.Nd5 (23.Rd5?! Rac8 24.Qd1 Rc6 25.Qh5 Kg7 26.Rf5 Be5+-) 23...Ne4 (23...Qe4 24.Qe4 fe4 25.Nf6 Rgd8 26.Nh5 Nd3+-) 24.f3 Bh2 (24...Nc5 25.Ra5 Rgc8+-) 25.Kh2 Rg2 (25...Nd6 26.c7 Rgc8+-) 26.Kg2 Rg8 27.Kf1 Ng3 28.Ke1 f4 29.Ra6 (29.Ra6 Ne4 30.Ra7 Kf8 31.Ba3 Qd6 32.Bd6 Nd6 33.Qh7 Rg1 34.Kf2 fe3 35.Kg1 Nb7 36.cb7 e2 37.b8Q) 1–0. Janek – Vindo, internet, 2018.

5.e3 Bd6 6.Bb2 Nf6 7.Nc3 c5 (7...0-0 8.Nf3–/+) 8.bc6 bc6 9.Nf3 0-0 10.Be2 e4 (10...Na6 11.0-0–/+) 11.Nd4 Bd7 12.a4 Na6 13.0-0 (13.Rb1 Nb4–/+) 13...Qb8 14.Ba3 (14.Rb1 Bh2 15.Kh1 Bd6-+) 14...Bh2 15.Kh1 Bd6 16.Qb3 Qc7 17.Rfc1 0–1. Pierre – Mondes, internet, 2019.

5.e3 Nd7 6.a4 Ngf6 7.Nf3 e4 8.Nd4 Ne5 9.Qc2 Bd7 10.Be2 c6 11.bc6 bc6 12.0-0 Be7 (12...c5 13.Nb5=+) 13.f4= ef3 14.Nf3 Nf3 15.Bf3 0-0 16.Nc3 Qc7 17.Ba3 Ba3 18.Ra3 Rfc8 19.Rfa1 White intends a5 (19.Be2 Qd6 20.Rfa1 Ra5=) 19...Bg4 20.a5 Ra6 21.Be2 (21.Qd1 Bf3 22.Qf3 Rca8=) 21...Be2=+ 22.Ne2 h6 23.Qf5 Rd8 24.Qf4 Qf4 25.Nf4 Ne4 26.d3 Nd6 27.Kf2 Nb5 (27...Rda8 28.Rc3 Nb7 29.Rac1=+) 28.Rb3= Rda8 (better 28...Kf8=) 29.Nd5+/- Ra5 (29...cd5 Theme: Deflection from b5 30.Rb5) 30.Ra5 Ra5 31.Ne7 Kf8 32.Nc6 Nd6?? (better 32...Ra6+-) 33.Rb8 (33.Rb8 Ne8 34.Na5+-) 1-0. Pereira – Trainee, internet, 2020.

5.e3 Nf6 6.Bb2 Bd6 7.Nf3 e4 8.Nd4 Ng4 9.h3? (better is 9.Be2 Qh4 10.g3+=) 9...Qh4-+ 10.Qe2?? (10.hg4 Qh1 11.d3-+) 10...Nf2! (10...Nf2 11.Qf2 Bg3 12.Qg3 Qg3 13.Kd1 0-0-+) 0–1. Proske,Johannes – Shevelev, corr, 1970.

5.e3 Nf6 6.Nf3 Bd6 7.Bb2 e4 8.Nd4 0-0 9.Be2 c5 10.bc6 bc6 11.a4 Re8 12.0-0 Ba6 13.d3 c5 14.Nb5 Bb5 15.ab5 Ra1 16.Ba1 ed3 17.Bd3 Nbd7 18.Nc3 Ne5 19.h3 Bb8 20.Ne2 Qd6 21.Be5 Qe5 22.g3 h5 23.h4 g5 24.hg5 Qg5 25.Nf4 h4 26.Qf3 hg3 27.fg3 c4 28.Bb1 Ba7 The isolani on e3 becomes a target 29.Ng2? (better 29.Nd5!? Qd5 30.Qf6 Re3 31.Bh7 Kf8 32.Qh8 Ke7 33.Qf6 Kd7 34.Qf5 Qf5 35.Bf5 Kd6 36.Kg2=) 29...Re6 30.Bf5 Be3 31.Ne3? (better 31.Kh1 Qh6 32.Nh4-+) 31…Re3 (31...Re3 32.Qf4 Rg3 33.Kh2 Rg2 34.Kh3 Qf4 35.Rf4 Rb2-+; 31...Qe3?! 32.Qe3 Re3 33.Kf2=+) 0-1. B4_My_Life (2200) - flyingprawns (2315), Rated Classical game, lichess.org, 2016.

5.e4 de4!? 6.Bb2 Nd7 –/+.

5.e4 Nf6 6.ed5 Bd6 7.Nc3 0-0 8.Bc4 Bf5 9.Nf3 Re8 10.d3 Nbd7 (10...Bb4 11.Bd2=+) 11.0-0= Nb6 12.Bb3 Bg4 13.h3 Bh5 14.Ne4 Nfd5 15.g4 (15.Be3 Ra5=+) 15...Bg6–/+ 16.Bd5 Nd5 17.Bb2 (17.Bg5 Be7 18.Be3 Ne3 19.fe3 Ra3 20.Ne5 Bg5 21.Ng6 Be3 22.Kh1 hg6=+) 17...Ra5 18.Nd6 cd6 (< 18...Qd6 19.Be5 Qa3 20.b6 cb6 21.d4=+) 19.Qe2? (better is 19.a4-+) 19...Nf4 (20.Qe3 Rb5-+; 19...Rb5?! 20.Bc1-+) 0–1. Neffgen,Dieter – Seckler,Siggi, RSS5D easy–1, 2003.

5.Nf3 Bd6 6.d4 –/+.

6.e3 Nf6 7.a4 Nbd7 =+.

6.Nf3 Nd7 7.a3 A) 7...Be7 8.e3 Ngf6 9.a4 Qe6 10.Qc2=+; B) 7...Ngf6 8.e3 Be7 9.a4 Ne4 10.Qc2=+; C) 7...e4 8.Nd4 Ngf6 9.d3 Nc5 10.de4=+; D) 7...d4 8.e3 d3 9.Nc3 Ngf6 10.Ng5–/+.

6.Nf3 Nd7 7.a4=+ A) 7...Qe6 8.a5 Ngf6 9.e3 Bb4 10.Qc2=+; B) 7...Ne7 8.e3 e4 9.Nd4 Qb6 10.Qc2=+; C) 7...Be7 8.e3 Bf6 9.d4 e4 10.Nfd2=; D) 7...d4 8.e3 Qb4 9.Qc2 de3 10.fe3=; E) 7...Ngf6 8.Qc2 e4 9.Nd4 Qb6 10.Bc3=+.

6.Nf3 Nd7 7.Qc2 Be7 8.a4 Ngf6 9.Ba3 Nc5 10.e3 =+.

6.Nf3 Nd7 7.e3 Ngf6 8.Be2 Be7 9.0-0 e4 10.Nd4 =+.

6.Nf3 e4 7.Nd4 Qb6 8.Bc3 Nf6 9.a4 Bb4 10.Bb4 =+.

6.Nf3 e4 7.Nd4 Nf6 8.a4 Qb6 9.Bc3 Bb4 10.Bb4=.

6.Nf3 e4 7.Nd4 Nf6 8.e3 Nbd7 9.Be2 c5 10.bc6= bc6 11.Qc2 Ne5 12.f4 ef3 13.gf3 Be7 14.f4 Nc4 15.Bc4 dc4 16.Qc4 Rb8 17.Ba3 c5 18.Nc3 0-0 19.Rg1 Bh3 20.Nb3 Nd7 21.Ne4+/– Qh6 22.Nbc5 Nc5 23.Bc5+/– Rfc8 24.Qc3 Bh4+= 25.Ng3 Qh5 26.d4 Qf3= 27.Kd2 Qf2 28.Ne2 Rc5 29.dc5 Rd8 30.Qd4 Rd4 31.ed4 Bd8 32.Rab1 Ba5 33.Kd1 h5 (34.Rb8 Kh7-+) 0–1. Van Rooijen,Peter (1700) – Dehaybe,Andre (1830), RI.2003.0.00001, 2003.

7.a3 A) 7...Ne7 8.e3 Nd7 9.Bc3 Qb6 10.Be2=; B) 7...c5 8.bc6 Nc6 9.Nc3 e4 10.Nb5=; C) 7...Bf5 8.e3 Nd7 9.Be2 Be7 10.0-0=+; D) 7...Be7 8.Qc2 Be6 9.e4 Qd7 10.ed5=+; E) 7...Nd7 8.Qc2 Ne7 9.Nc3 e4 10.Nd4=; F) 7...Nh6 8.e3 Be7 9.Nc3 Be6 10.Be2=+; G) 7...Bg4 8.h3 Be6 9.e3 Nh6 10.Be2=+.

7.a4 A) 7...Qd8 8.e3 Bd6 9.d4 e4 10.Nfd2=; B) 7...Bg4 8.h3 Bf3 9.ef3 Ne7 10.d4=; C) 7...Qb6 8.e3 c5 9.d4 cd4 10.ed4=; D) 7...Ne7 8.e3 Bg4 9.Be2 e4 10.Nd4=; E) 7...Be7 8.d4 e4 9.Nfd2 Be6 10.e3=; F) 7...Qb4 8.Bc3 Qg4 9.h3 Qh5 10.Qb3=+.

7.Qc2 A) 7...c5 8.e4 Be6 9.ed5 Bd5 10.Be2=+; B) 7...Be6 8.e3 Ne7 9.Nc3 c5 10.bc6=; C) 7...Qb6 8.e4 Bc5 9.d4 ed4 10.ed5=; D) 7...e4 8.Nd4 Qc5 9.d3 Nd7 10.Bc3=; E) 7...Bg4 8.h3 Be6 9.e3 Qd7 10.Be2=+.

7.Nc3 A) 7...Ne7 8.e3 Qb4 9.Rb1 Qa5 10.Be2=; B) 7...Bf5 8.d4 e4 9.Nd2 Nd7 10.e3=; C) 7...Bg4 8.h3 Bf5 9.e3 Nd7 10.d4=+; D) 7...Be6 8.e3 Ne7 9.Be2 Nf5 10.0-0=; E) 7...d4 8.Ne4 Qb4 9.Qc2 Qb5 10.e3=+.

7.e3 Bg4 8.a4 e4=+ 9.h3 Bh5 10.g4 Bf7 11.Nd4 h5 12.gh5 Bh5=+ 13.Be2 Be2 14.Qe2 Nd7 15.Nc3 Ne5 16.Ba3 Qd7 17.Bf8 Nd3 18.Kd1 Kf8 19.f4 f5 20.Nc2 Nf6 21.Ne1 Nc5 22.d4 ed3 23.Nd3 (23...Nce4 24.Qe1–/+). Ashley1 – Arkantos (1660), internet, 2008.

6.a3 Nf6 7.Qc2 c5 8.bc6 Nc6 9.e3 0-0 10.Nc3 Bg4 11.Be2 –/+.

6.Qc2 Nf6 7.Nf3 Qe7 8.e3 0-0 9.Be2 Bg4 10.Nc3 c6 11.h3 =+.

6.Nc3 Nf6 7.d4 Nbd7 8.e3 e4 9.Qb3 Nb6 10.a4 Ra5 11.Ba3 =+.

6.d3 c5 7.Qd2 Be6 8.e3 Nf6 9.Nf3 d4 10.Na3 Bc7 11.Qc2 –/+.

6.d4 e4 7.Nc3 Nf6 8.a4 e3 9.fe3 Ng4 10.Nf3 Ne3 11.Qb3 –/+.

6.Nf3 f6 7.e3 Ne7 8.Qb3 Be6 9.d4 e4 10.Nfd2 0-0 (better 10...f5=+) 11.Ne4!+/- c6 (11...de4 12.Qe6 Double attack (12.Qe6 Pinning; 12.Qe6 Deflection; 12.Qe6 Decoy)) 12.Nd6 Qd6 13.Bd3 Nd7 14.bc6 bc6 15.0-0 (15.Ba3 c5+-) 15...Rfb8+/- 16.Qc2 Qc7? (better 16...Bf5!? 17.Ba3 Bd3 18.Qd3 Qe6+/-) 17.Bh7+- Kf8 18.Ba3 Ra3 (18...c5 19.Bc5 Nc5 20.dc5+-) 19.Na3 c5 (19...f5 20.g4! Nf6 21.Bf5 (21.gf5?! Bc8+/-) 21...Bf5 22.gf5+-) 20.Rab1 c4 21.Rb8 Qb8 22.Rb1 Qc7 23.Nb5 Qc6 24.a4 (24.Bg6 f5 25.Bh5 f4+-) 24...Bg8 (24...f5 25.g4!+-) 25.Bg8 Ng8 (25...Kg8 26.Nc3+-) 26.Nc3 Ne7 27.a5 Nc8 (27...f5 28.Qa4 Qa4 29.Na4+-) 28.Qa2 Na7 (28...Kf7 29.a6+-) 29.a6 Nb6 30.Qa5 Nac8 31.a7 Kf7 32.Nd5! Qd5 (32...Nd5 33.a8Q Decoy; 32...Qd5 33.Rb5 Double attack (33.Rb5 Decoy)) 33.Qd5 Nd5 34.a8Q Ncb6 35.Qb7 Kg6 36.Rb6 (better 36.e4!? Nf4 37.Rb6 Kh6+-) 36...Nb6 37.Qb6 c3 38.Qc7 1-0. DEFFM – GuestRLGH, freechess.org, 2021.

6.Nf3 f6 7.e3 Ne7 8.Be2 Be6 9.d4 e4 10.Nfd2 0-0 11.Nc3 Nd7 12.Qb3 f5 13.a4 c5 14.dc5 (14.bc6!? bc6 15.Ba3 Ba3 16.Qa3=) 14...Nc5–/+ 15.Qc2 Qc7 16.g3 Be5 17.Nb3? (better is 17.0-0!? Na4 18.Ra4 Ra4 19.Qa4 Bc3 20.Rc1+=) 17...Na4!-+ 18.Nd4 (18.Ra4 Ra4 Combination; 18.Na4 Qc2 Pinning (18...Qc2 Deflection; 18...Qc2 Clearance)) 18...Nb2 (18...Bd4 19.ed4 Nb2 20.Qb2 Ra1 21.Qa1-+) 19.Ra8 Ra8 20.Qb2 Bd4 21.ed4 f4 22.0-0 (22.b6 Qd6-+) 22...f3 23.b6 Qd6 (better is 23...Qc6 24.Bd1 Qc4-+) 24.Nb5?? (24.Bd1-+) 24...Qb6 25.Bf3 ef3 26.Re1 (26.Qb4 Nc6 27.Qc5 Nd4 28.Qd4 Qb5-+) 26...Ra5 27.Qb4 Nc6 (better is 27...Kf8 28.Qb3 Rb5 29.Qf3 Kg8-+) 28.Qd6 Bf7 (28...Qb5?? 29.Qe6 Kh8 30.Qe8; 28...Rb5?? 29.Qe6 Kh8 30.Qe8) 29.Nc7 (29.Qd7 Qd8 30.Qb7-+) 29...Qb4 (29...Qb4 30.Qb4 Nb4-+) 0–1. Nieland,K (1710) – Spanton,T (1945), Bad Woerishofen GER, 2014.

7.a4 c6 8.Nc3 0-0 9.Nf3 e4 10.Nd4 c5 11.Nb3 Nbd7 12.Be2 Ne5 Black plans c4 13.0-0 Bd7 14.a5 c4 15.Nd4 Ra5 16.Ra5 Qa5 17.Qa4 Qa4 18.Na4 Ra8 19.Ra1 Kf8 (19...Bg4 20.Bg4 Nfg4 21.Nb6 Ra1 22.Ba1–/+) 20.Nb6–/+ Ra1 21.Ba1 Bc7 22.Nd7 Nfd7 23.Bc3 g6 24.f4 (24.g4 Ke7–/+) 24...Nd3 25.g4 Nb6 26.Bd1 (26.h4 Na4 27.Bd3 ed3 (27...Nc3?! 28.Bc4 dc4 29.dc3=+) 28.Bb4 Kg7-+) 26...Nc8 27.Ba4 (27.f5 Be5-+) 27...Ke7 28.Bd1 (28.Kg2 Bb6-+) 28...Nd6 29.Kf1 Bb6 30.Ba4 Kd7 31.Ke2 (31.h3 Nc5 32.Bc2 Kc7-+) 31...Bc5 32.Nc2 (32.h3 Kc7-+) 32...Kc7 33.Bf6 Nc8 34.Nd4 (34.Ne1 Be7 35.Bd4 Nc5 36.b6 Kd8-+) 34...Nb6 35.Bc2 Nd7 36.Bg7 (36.Bg5 Bd4 37.ed4 f6-+) 36...Kb6 37.Bh8 (37.h4 Bd4 38.Bd4 Kb5-+) 37...Bd4 38.Bd4 Kb5 39.h4 (39.Bg7 Kc6-+) 39...Kc6 40.Bb1 (40.h5 gh5 41.gh5 b5-+) 40...b5 41.Bc2 (41.h5 b4-+) 41...N7c5 42.Bb1 0–1. Pierre – Wayner, internet, 2019.

7.d4 e4 –/+.

7.Be2 e4 (7...0-0 A) 8.d3 A1) 8...Qe7 9.Nf3 (9.a4 Bb4 10.Nd2 e4 11.Nh3 ed3 12.Bd3 Ne4 13.Be4 de4 14.Rc1) 9...e4 10.Nd4 c5 11.bc6 Nc6 12.Nd2 ed3 13.Bd3 Bg4 14.Be2; A2) 8...Bd7 9.a4 Bb4 10.Nd2 e4 11.de4 de4 12.Nh3 Bh3 13.gh3 Nbd7 14.0-0; B) 8.a4 e4 9.d4 Nbd7 10.Nh3 Nb6 11.Nd2 Bh3 12.gh3 Bb4 13.0-0 h6 14.Qc2) 8.d3 (8.Nh3 0-0 9.a4 (9.Nc3 Nbd7 10.0-0 Nb6 11.d3 Bh3 12.gh3 Qd7 13.Kg2 Qf5 14.h4; 9.Nf4 d4 10.Bc4 c6 11.0-0 cb5 12.Bb5 Nc6 13.Qc1 Bd7 14.Na3) 9...Nbd7 10.Nf4 g5 11.Nh3 h6 12.Nc3 c6 13.f4 ef3 14.gf3; 8.Nc3 0-0 (8...Nbd7 9.d3 Ne5 10.de4 de4 11.Nh3 Bf5 12.0-0 Nd3 13.Bd3 ed3 14.Qf3) 9.d3 (9.d4 Nbd7 10.Qb3 c5 11.Nd5 Nd5 12.Qd5 Nf6 13.Qb3 Be6 14.Bc4) 9...Qe7 10.a4 Nbd7 11.d4 Nb6 12.a5 Nc4 13.Nd5 Bb4 14.Kf1; 8.d4 Nbd7 9.Nd2 (9.a4 0-0 10.Nh3 Nb6 11.Nd2 Bh3 12.gh3 Bb4 13.0-0 h6 14.Qc2) 9...0-0 10.Nh3 Nb6 11.a4 Bh3 12.gh3 Bb4 13.0-0 h6 14.Qc2) 8...Nbd7 (8...0-0 9.Nc3 (9.de4 de4 10.Nc3 Qe7 11.Nh3 Rd8 12.Qc2 Bh3 13.gh3 Nbd7 14.0-0-0) 9...Nbd7 10.de4 de4 11.Nh3 Nc5 12.Qd4 Be6 13.Nf4 Bf4 14.Qc5; 8...Qe7 9.Nc3 (9.Nh3 0-0 10.Nc3 Ba3 11.Rb1 Bh3 12.gh3 Nbd7 13.0-0 Nc5 14.d4; 9.Qc2 0-0 10.Nc3 Nbd7 11.d4 Nb6 12.a4 c6 13.Nh3 Bh3 14.gh3) 9...0-0 10.Nh3 Ba3 11.Ba3 Ra3 12.Nb1 Ra8 13.Nf4 g5 14.Nh5) 9.Nd2 (9.Nc3 Ne5 10.de4 de4 11.Nh3 Bh3 12.gh3 0-0 13.Qc2 Bb4 14.0-0; 9.de4 de4 10.Nh3 Ne5 11.Nc3 Bf5 12.0-0 Nd3 13.Bd3 ed3 14.Qf3) 9...0-0 (9...Ne5 10.de4 de4 11.Nc4 Nc4 12.Bc4 Bb4 13.Kf1 0-0 14.Ne2) 10.de4 de4 11.Qc2 (11.Nh3 Ne5 12.Qc2 Bf5 13.0-0 Nd3 14.Bd4) 11...Nc5 (11...Be5 12.Nh3 Bb2 13.Qb2 Nc5 14.Nf4) 12.Bd4 (12.Nh3 Bf5 13.Nf4 g5 14.Bd4) 12...Qe7 13.Nc4 (13.Nh3 Nd5 14.Bc5) 13...Bf5 (13...Ne6 14.Bc3–/+) 14.Nd6+= cd6 15.Nh3 (15.Qb2 Ncd7+=) 15...Nd3 (15...Bh3 16.gh3 Ne6 17.Bb2–/+) 16.Bd3+= ed3 17.Qb3 Rfc8 (17...Qe6 18.Qb2 Bh3 19.Bf6–/+) 18.0-0 (18.Nf4!?=) 18...Qe6+= 19.Qe6 (19.Bf6 Qb3 20.ab3 Ra1 (worse is 20...gf6 21.Ra8 Ra8 22.Rd1=) 21.Ba1 d2–/+) 19...fe6–/+ 20.Bf6 gf6 21.Nf4 d2 22.Rfd1 Rc2 23.f3 e5 24.Nd5 Kf7 25.e4 (25.Kf2 Rca2 26.Ra2 Ra2–/+) 25...Rac8 26.Kf2 Be4 (26...Be4 27.fe4 Rc1–/+) 0–1. Schaar,Joerg (1970) – Denzin,Michael (2305), RSLE–2010, 2010.

7.Nf3 0-0 8.Be5+= Be5 9.Ne5 Re8 (9...Bf5 10.d4+= Nbd7 11.Bd3+=; 9...Nbd7 10.Nf3 Nb6 11.Be2+=) 10.d4 c5 (10...Nbd7 11.Nd7+= (11.Nf3+=); 10...Bf5 11.Bd3+=) 11.Be2 (11.bc6 Nc6 12.Nc6 bc6+=) 11...cd4 (11...Bf5 12.0-0+=) 12.ed4 (12.Qd4 Qa5 13.Nd2 Nbd7+=) 12...Nbd7= 13.Nd7 (13.f4 Ne4 14.0-0 Qb6=) 13...Bd7 (13...Qa5 14.Qd2 Bd7 15.Qa5 Ra5 16.Nc3=+) 14.0-0 Ne4 (14...Qa5 15.a4=) 15.Bd3 (15.f3 Nf6 16.Nc3 Ra3–/+) 15...Bf5 (15...Qb6!? 16.Nd2 Bb5+=) 16.Be4+= Re4 (16...Be4 17.Nc3+=) 17.Nc3+/– Rg4 (17...Re6 18.Re1+/–) 18.Qf3 (better is 18.Re1 Rh4 19.Re5+/–) 18...Qg5? (18...Qd7 19.Qd5 (19.Nd5? Be4 20.Qg4 Qg4-+) 19...Rd4 20.Qd7 Rd7 21.Rfd1+/–) 19.Rfe1 (19.Qd5 Rc8 20.Rfe1 h6+-) 19...Rf4? (better is 19...Rd4 20.Re5 g6+/–) 20.Qg3?? (better is 20.Qe3 Be6 21.Nd5+-) 20...Rg4 21.Qf3 (better is 21.Qe5 Rg2 22.Kh1=) 21...Rf4+- 22.Qg3?? (better is 22.Qe3 Be6 23.Nd5+-) 22...Rg4 23.Qf3 ½–½. Bini,Gabriele – Singh,Marcel, Canarias en Red prel 4th blitz, 2004.

7.Nf3 e4!? 8.Nd4 0-0–/+ 9.Be2 c5 10.bc6 Nc6 11.Nb5 =+.

7.Nf3 e4 8.Ne5 0-0 9.d4 c6 10.Be2 Nfd7 (10...Nbd7 11.Nd7 Qd7 12.0-0–/+) 11.Nd7 Nd7 12.Nc3 Qg5 13.g3 Nf6 14.h4 Qg6 15.a4 Ng4 16.Rg1 h5 17.Ba3 Qf6 18.Rf1 (18.Bd6 Qd6 19.Qb3 Bd7=+) 18...Rd8 19.Bd6 Qd6 20.Rg1 (20.a5 cb5 21.Nb5 Qc6–/+) 20...c5 21.a5 Qf6 22.Rg2 1–0. Silent Move (2115) – jorate (1785), redhotpawn.com, 2015.

7.Nf3 Qe7 8.Qc2 0-0 9.Be2 c5 10.d3 e4 (10...Bd7 11.b6–/+) 11.de4 Ne4 (11...de4 12.Nfd2=+) 12.Nc3= Nc3 13.Bc3 Nd7 (13...c4 14.Rd1 Be6 15.0-0=) 14.0-0 Rd8 15.Rfd1 Nf8 (15...Nf6 16.Qb2=) 16.Rd2 (16.a4 Qe4 17.Qd2 Be6=) 16...b6 17.g3 (17.Rc1 Be6=) 17...Bc7 (17...Be6 18.Ne5 Qg5 19.Nc6=) 18.Rad1= Be6 19.Be5 f6 (19...Rdc8 20.Qc3 Be5 21.Ne5=+) 20.Bc7 Qc7 21.Nd4 Bf7 22.Nc6 Re8 (22...Rd7!?+=) 23.Nb4! d4 (23...cb4 24.Qc7) 24.ed4 Re2? (24...Ne6!? 25.Nd5 Qa7 26.dc5 Nc5+/–) 25.Re2+- Bh5 (25...Qd7 26.dc5 Qb5 27.Rb1 Qc5 28.Nd3+/–) 26.f3 Qf7 27.dc5 bc5 (better is 27...Bf3 28.cb6 Be2 29.Qe2 Qb7+-) 28.Qc5 Bf3 29.Re7 Rc8 30.Qe3 (30...Rc3 31.Qc3 (31.Rf7?! Re3 32.Rf8 Kf8+-) 31...Qe7 32.Qf3 Qc5 33.Kg2 Qb4 34.Qb3 Qb3 35.ab3+-; 30.Rf7?! Rc5 31.Rf8 Kf8 32.Rd8 Ke7+/–) 1–0. Whiteside,T – Harding,T (2250), corr BPCF, 1991.

7.h3 0-0 8.Nf3 e4 9.Nd4 –/+.

7.h3 c6 8.a4 (8.bc6 Nc6 9.Bb5 0-0–/+) 8...h6 (8...0-0 9.bc6 Nc6 10.Nf3–/+) 9.h4 (9.d4 e4–/+) 9...c5 (9...0-0 10.Nf3 e4 11.Ne5–/+) 10.h5 (10.Be2 Bf5–/+) 10...b6 (10...0-0 11.d3-+) 11.f3 (11.d4 ed4 12.ed4 c4-+) 11...0-0 (11...Nbd7 12.g4–/+) 12.Qc2 (12.g4 Nfd7–/+) 12...Nbd7 13.g4 e4 (better is 13...Ne8–/+) 14.f4? (better is 14.g5!? hg5 15.h6–/+) 14...Ng4-+ 15.Bh3? (15.Nc3 Ndf6-+) 15...Ngf6 16.f5? Nh5 17.Kf2 Ng3 18.Rh2 Nf5! 19.Bf5 Bh2 20.Qc3 Qh4 21.Ke2 Qh5 22.Ke1 Be5 23.Bd7 Bc3 24.Bc3 Bd7 25.d4 Qh1 26.Kf2 Qh2 27.Kf1 Bh3 28.Ke1 Qg1 29.Ke2 Qf1 30.Kd2-+ Qf2 31.Kd1 Bg4 32.Kc1 Qe3 33.Kc2 cd4 34.Bb2 Qd3 35.Kc1 Qd1 0–1. riverborne – TimtheEnchater, Caissa.com, 2004.

7.e3 Ne7 8.Be2 e4 9.Nd4 Nb6 10.a4 0-0 11.a5=.

7.e3 Ngf6 8.Nc3 b6 (8...0-0 9.Be2–/+) 9.Be2= 0-0 10.0-0 Bb7 11.Qc2 e4 12.Nd4 Ne5 13.f4 ef3 14.Nf3 Nfg4 15.Ne5 Ne5 16.Rac1 Qh4 17.Rf4 Qh6 18.g3 Ng6 19.Rf5 Qh3 (19...Ne5 20.Nd5 Bd5 21.Rh5+=) 20.Bf1 Qg4 21.Be2 Qh3 22.Bf1 Qh6 (22...Qg4 23.Bg2= (23.Nd5? Ra2 24.Bd3 Nh4-+)) 23.Nd5+= Rae8? (better is 23...Ra2!? 24.Bc4 Bd5 25.Rd5 Raa8+/–) 24.Bg2+- Re5?? (better is 24...Bd5 25.Rd5 Ne7+-) 25.Be5 Ne5 26.Re5! Be5 27.Ne7 Kh8 28.Bb7 Qd6 29.Nf5 Qe6 30.d4 Bf6 31.Qd3 g6 32.Rc6 (32.Rc6 Qd5 33.Qa3+-) 1–0. b4_player – mikrus, casual, 2013.

7.e3 Ngf6 8.Be2 0-0 9.0-0 c5 10.d3 b6 11.Nbd2 Bb7 12.a4 Re8 Black intends e4 13.Ne1 (13.e4 Qc7 (13...de4?! 14.de4 Qe7 15.Qc2=) 14.Qc2 c4 15.dc4 de4–/+) 13...Qc7 Black prepares the advance c4 14.g3 e4 15.d4 (15.de4!? Ne4 16.Ne4 de4 17.a5 Ra5 18.Ra5 ba5 19.f4–/+) 15...c4-+ 16.Ba3 Nf8 17.Ng2 Ng6 18.Qc2 Qd7 19.Bd6 Qd6 20.Qc3 Ra5 21.Qa3 Qd7 22.Qb4 Rd8 23.Nb1 h5 24.Nc3 Qh3 25.Nf4 Nf4 26.ef4 Qe6 27.Rae1 (better is 27.Nd1–/+) 27...Qh3 (27...h4 28.Nd1-+) 28.f3 (28.Ra1 Qd7 29.Nd1–/+) 28...Rd7 (28...Ra7 29.Qe7 Re8 30.Qd6–/+) 29.Rf2 Ra8 (29...h4 30.Bf1 Qf5 31.fe4 de4 32.Bc4 hg3 33.hg3–/+) 30.Bf1 Qe6 31.fe4 (31.fe4 de4 32.f5+= (32.Qc4?? Qc4 33.Bc4 Rc8-+)) 1–0. Pruvost,A – Soveaux,J (1830), La Fere FRA, 2012.

7.e3 Ngf6 8.Be2 0-0 9.Nc3 Re8 10.0-0 c5 11.bc6 bc6 12.a4 e4 13.Nd4 Ne5 14.Rb1 Qc7 15.h3 Bd7 16.Qc2 Rec8 17.f4 ef3 18.Nf3 Nf3 19.Bf3 h6 (19...Re8!?–/+) 20.Ne2= Be5 21.Be5 Qe5 22.Qc3 Qc3 (22...Qc7!? 23.Qa3 Ra5=) 23.Nc3+= Kf8 24.Kf2 Ra7 25.g4 Ke7 26.Kg3 Rca8 ½–½. Silent Move (2115) – gerrys (1935), redhotpawn.com, 2015.

7.g3 Ngf6 8.Bg2 Qe7 9.a4 (9.0-0 0-0–/+) 9...0-0 (9...e4 10.Nd4–/+) 10.0-0=+ e4 11.Nd4 Nc5 (11...Nb6 12.d3 ed3 13.ed3=) 12.d3 (12.a5 Re8=+) 12...ed3 (12...Re8 13.de4 Nce4 14.Nd2=+) 13.ed3 Bg4 (13...Re8 14.a5=+) 14.Qc2 Qd7 15.Nd2 (15.Re1 Bh3=+) 15...Bh3 16.a5 Bg2 17.Kg2 Qg4 (17...Rfe8 18.N2b3 Nb3 19.Qb3=) 18.N2f3 (18.N4b3 Nb3 19.Nb3 Nh5=) 18...Nh5 (18...Rfe8 19.Rfe1=+) 19.Kh1= Nf6 20.Rfe1 Ne6 (20...Qg6 21.Ne5 Qh5 22.f4=) 21.Re3 Nd4 22.Nd4 Qd7 23.Kg2 h5 24.Rf3 Be5 25.Nf5 Rfe8 26.Be5 Re5 27.a6 Ra7 28.Qa4 Re6+= 29.Qd4 c5 30.Qc5 ba6 31.Nd4 Rc7 32.Ne6 Rc5= 33.Nc5 Qb5 34.d4 Ne4 35.Ra6 Nc5 36.Ra8 Kh7 37.dc5 d4 38.Rd8 Qc5 39.h4 f6 40.Rf4+= Qc6 41.Kg1 Qc1 42.Kh2 Qc2 43.Rdd4 Kh6 44.Rc4 Qe2 45.Kg2 Qe5 46.Rfe4 Qd5 47.Rcd4 Qc6 48.Kh2 Qc2= 49.Kg2 Qc6 50.Rc4 (50.Kf1!?+=) ½–½. Fernandez Fornes,Juan A – Idema,Abram A, corr Lewkowitz–mem A, 1999.

6.a4 Ngf6 7.Qc2 Bd6 8.e3 0-0 9.a5 Re8 10.Ra2 Nb8 11.Be2 –/+.

6.Qc2 Ngf6 7.d4 Bb4 8.Bc3 Qe7 9.Nd2 ed4 10.Bb4 Qb4 11.Qc7 –/+.

6.Nc3 Ngf6 7.e3 Bd6 8.Nf3 0-0 9.Be2 Nb6 10.d3 Nbd7 11.0-0 =+.

6.d4 e4 7.Qb3 Ngf6 8.e3 Qe7 9.Bc3 Qd6 10.Ne2 Be7 11.a3 =+.

6.e3 c5 7.d3 (7.bc6 bc6 8.Qc2 Qc7=+) 7...d4 8.Nd2 Qa5 9.a4 c4 (better 9...Ngf6!?-/+) 10.dc4= de3 11.fe3 Ngf6 12.Be2 Bb4 13.Qc2 0-0 14.Ngf3 Ng4 15.Ng5 Ndf6 16.Bg4 Bg4?? (16...Rd8 17.Bd7 Rd7=+ (worse 17...Bd7 18.Be5 Bd2 19.Qd2 Qd2 20.Kd2+/-)) 17.Be5+/- h6 18.Ngf3 (better 18.Bf6!? hg5 19.Bg5+/-) 18...Rfe8= 19.Bf6 Re3 (19...Bd2!? 20.Qd2 Re3 21.Kd1 Rf3 22.gf3 Bf3 23.Kc1 Bh1 24.Qa5 Ra5+/-) 20.Kf2+/- Rae8 21.Rhe1?? (21.Kg3 Bf3 A) 22.gf3? Qc7 (22...gf6 23.Nf1 Qc7 24.Kh3 Rf3 25.Ng3-+; worse 22...Bd2 23.Qf5 gf6 24.Kh3-+) 23.Kh3 Bd2-+; B) 22.Nf3 Qc7 23.Kf2 gf6 24.Rhd1+=) 21…Bd2-+ (21...Bd2 22.Re3 Be3 23.Kf1 gf6-+) 0-1. marekt (2160) - grok_game (2465), gameknot.com, 2015.

6.e3 Bd6 7.Be2 Ngf6 8.Nf3 Qe7 9.Nc3 0-0 10.d3 Rd8 11.Qc2 =+.

6.e3 Bd6 7.Nf3 Ngf6 8.Nc3 e4 9.Nd4 0-0 10.Be2 Ne5 11.0-0 c5 12.bc6 bc6 13.Rb1 Re8 14.a4 Nfg4 15.h3 Nh6 16.Qb3 (16.Qc1!?–/+) 16...Qg5-+ 17.Kh1 Qh4 (better 17...Nf3 18.Ba3 Nd2-+) 18.Nd5?? (better 18.Ba3 Ba3 19.Qa3 Bh3 20.g3-+ (worse 20.gh3 Qh3 21.Kg1 Nhg4 22.Bg4 Qg4 23.Kh1 Nf3 24.Nf3 ef3 25.Qf8 Kf8 26.Nd5 Qg2)) 18...cd5-+ 19.Qd5 Bh3 20.g3 (20.Qd6 Nhg4 21.Bg4 (21.gh3?? Qh3 22.Kg1 Qh2) 21...Bg2 22.Kg2 Qg4 23.Kh2 Ra5 24.Kh1 Ra6 25.f3 Qh3 26.Kg1 Qg3 27.Kh1 Rd6 28.Nf5 Qh3 29.Kg1 Rg6 30.Kf2 Qf3 31.Ke1 Nd3) 20...Qg5 21.Qd6 Rad8 22.Qc7 (22.Qa3 Nhg4 23.Kg1-+) 22...Nhg4 23.Kg1 Qh5 (23...Qh5 24.Bg4 Qg4-+) 0–1. Ddgs – Thecy, internet, 2019.

6.e3 Bd6 7.Nf3 Ngf6 8.Be2 e4 9.Nd4 Ne5 10.f4 ef3 11.Nf3 Nf3 12.Bf3 Ng4 13.Bg7 Rg8 14.Bd4 Nh2 15.Qe2 c5 16.bc6 bc6 17.e4 Ba6 18.d3 (18.Qe3 Nf3 19.gf3 de4 20.Rh7 Bc4=) 18...c5 19.ed5 Kf8 (19...Kd7!? 20.Bc3 Qh4 21.Kd1 Qa4 22.Kc1 Qf4 23.Nd2 Nf3 24.Qf3 Qf3 25.gf3 Bd3=+) 20.Rh2= Bh2 21.Bc5 Bd6 22.Bd6 Qd6 23.Qb2 Bd3 24.Qd4 Re8 (24...Bb1 25.Rb1 Ra2 26.Rb6-/+) 25.Kd1 Qe7 26.Qd3 Qe1 27.Kc2 Rc8 28.Kb3 Rg6 29.Qd4 Qe5 (29...Qe5 30.Qb4 Kg8-+) 0-1. onur604 - lichess AI level 8, Casual Correspondence game, 2021.

6.e3 Ngf6 7.Nf3 Bd6 8.Qc2 0-0 9.Be2 Re8 (9...Qe7 10.0-0=+) 10.0-0 Nf8 (10...Nb6 11.a4=+) 11.d3 Bg4 12.h3 Bd7 13.a4 Qc8 (13...c5 14.bc6 Bc6 15.Rc1=+) 14.Ba3 (14.Rc1 Bf5=) 14...e4 15.Nh2 (15.de4 de4 16.Nfd2 Be5=+) 15...ed3 (15...Ne6 16.de4 Be5 17.Ra2 de4 18.Nd2=) 16.Bd3= Be5 17.Bb2 (better is 17.Ra2!?=) 17...Bh3–/+ 18.Be5 Re5 19.gh3 (19.Rc1 Rg5 20.g3 Ne6=+) 19...Qh3 20.f3 (20.f4 Re3 21.Bf5 Qh5–/+) 20...Rg5 21.Kh1 Nh5 22.Rg1 Ng3 23.Rg3 Qg3 24.Nc3 Re8 25.f4 Rh5 26.Rg1 (26.Qe2 Qh3 27.e4 de4 28.Ne4 Re6-+) 26...Qf3 27.Qg2 Re3 (better is 27...Qg2 28.Rg2 Re3-+) 28.Be2?? (better is 28.Qf3 Rf3 29.Nd5 Rd5 30.Bh7 Nh7 31.Nf3-+) 28...Rh2!-+ 29.Kh2 Qf4 (30.Qg3 Qh6 31.Kg2 Rg3 32.Kg3 Qe3 33.Kh2 d4-+) 0–1. Whiteside – Botterill,G, Aberystwyth, 1985.

6.e3 Ngf6 7.Nf3 Bd6 8.d4 e4 9.Ne5 0-0 10.a3 Re8 11.Nd7 Nd7 12.Qc2 Nb6 (12...Qh4 13.Nc3 Nf6 14.a4–/+) 13.a4 Bd7 (13...h6 14.h4–/+) 14.Bc3 (14.Nc3 h6–/+) 14...c5 15.dc5 Bc5 16.Qd1 Qg5 17.g3 (17.a5 Bg4 18.h4 A) worse 18...Bd1 19.hg5 Bc2 20.Kd2 (worse 20.ab6 Ra1 21.Ba1 Bb1–/+) 20...Bb1 21.Be2+=; B) 18...Qg6–/+) 17...Bg4-+ 18.Be2 Be2 19.Qe2 Na4 20.0-0 g6 21.Qc2 Nc3 22.Nc3 Rac8 23.Qd1 Qe5 (23...Be3 24.Nd5 Bc5 25.Qb3-+) 24.Ne2 (24.Nd5?? Red8-+) 24...Bb6 25.h4 Rc4 26.Qb3 Rec8 27.Rfd1 h6 28.Ra2 Qf5 29.Ra4 Ra4 30.Qa4 Qf3 31.Nd4 Qg4 32.Qa1 Rc5 (32...Rc3 33.Rc1 Rc4 34.Rd1-+) 33.Rd2–/+ Kh7 34.Nb3 Rc8 35.Nd4 Bd4 36.Rd4 ½–½. Silent Move (2115) – the humble 77 (2040), redhotpawn.com, 2019.

6.e3 Ngf6 7.Nf3 Bd6 8.Be2 0-0=+.

6.Nf3 Bd6 7.e3 Ne7 (7...Ngf6 8.Be2=+) 8.Qc2 (8.Be2 e4 9.Nd4 c5 10.bc6 bc6=+) 8...0-0 9.Be2 c5 10.d3 (10.bc6 Nc6 11.0-0 e4–/+) 10...d4–/+ 11.0-0 Nd5 12.e4 Nf4 13.Re1 (13.Bc1 Qf6–/+) 13...Ra5 (13...Qa5 14.Na3–/+) 14.a4 Ne2 15.Re2 Nb6 16.Nbd2 (16.Bc1 Bg4–/+) 16...Bg4 17.Ree1 (17.h3 Bf3 18.Nf3 Qf6–/+) 17...Qf6 18.Ra2 Rfa8 19.Rea1 Be7 (19...Qg6 20.Ne1–/+) 20.Ne1 (20.h3 Bd7–/+) 20...Be6 (20...Qd6 21.Nc4 Nc4 22.dc4–/+) 21.Nb3 R5a7 22.a5 c4 23.dc4 Nc4 24.Nd3 Rc8 25.Qd1 (25.Qb1 Qg6 26.Qe1 Bd6–/+) 25...Raa8 (25...Qh4 26.Ne5 Ne5 27.Bd4-+) 26.Bc1 Nd6 (27.f4 Nb5–/+) 0–1. Findlay,Michael (1875) – Ventimiglia,Chuck (1905), CB.2003.0.00089, 2003.

6.Nf3 Bd6 7.e3 Ne7 8.Be2 e4 9.Nd4 Nc5 10.0-0 0-0 11.Nc3 =+.

6.Nf3 e4 7.Nd4 Bd6 8.e3 Ne5 9.Be2 Qg5-/+ 10.Kf1 Ne7 11.f4 ef3! 12.Nf3 (12.Nf3 Qf6 Combination; 12.Bf3 Nf3 Combination; 12.gf3 Bh3 Mate attack) 12...Nf3 13.Bf3 Nf5 14.Nc3 (14.g3 Ra5 15.a4 0-0=+) 14...c6 (14...d4!? 15.ed4 Nd4-/+) 15.e4=+ Nh4 (15...Ne7 16.h4 Qf4 17.Qc1=+) 16.ed5= cd5 (16...Nf3!? 17.Qf3 cd5 (worse 17...Qd2 18.Re1 Kf8 19.Bc1+/-) 18.Qd5 Qf4 19.Qf3 Qd2=) 17.Qe2+= (17.Nd5 0-0 18.d3 Nf3 19.Qf3 Bg4-+; 17.Bd5 0-0 18.Be4 Re8-/+) 17...Be6 18.Bd5 0-0 19.Bb7 Rae8 20.Bc6 Bd7! 21.Be4 (21.Bd7 Re7 Double attack (21...Re2 Discovered attack; 21...Re7 Decoy)) 21...Bc5 22.d3 Bg4 (22...Bg4 23.Qc2 Qf4 24.Ke1 Qe3 25.Kf1 f5-+) 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

6.g3 Bd6 7.Nf3 Ne7 8.Bg2 e4 9.Nd4 Nc5 10.0-0 Na4 11.Bc3 =+.

6.a3 Nf6 7.d3 Bd6 8.de4 de4 9.e3 0-0 10.Nd2 Qe7 11.Qc2 =+.

6.Qb3 Nf6 7.Qg3 c5 8.Nh3 d4 9.e3 Bd6 10.Nf4 Nh5 11.Nh5 -+.

6.Qc2 Nd7 =+.

6.Qc2 Nf6 7.e3 Bb4 8.a3 Bd6 9.d3 Bf5 10.Nd2 Nbd7 11.de4 =+.

6.Nc3 Nf6 7.e3 Bb4 8.Qb3 Qd6 9.Nge2 Nbd7 10.Nd4 Nc5 11.Qc2 =+.

6.Nc3 Nf6–/+ 7.e3 Bd6 8.Nge2 c6 (8...0-0 9.d3=+) 9.d3 ed3 (9...0-0 10.de4 de4 11.Qc2=+) 10.Qd3 0-0 11.Ng3 Ba3 (11...Nbd7 12.Qc2=+) 12.Ba3= Ra3 13.Qd2 c5 (13...Re8 14.Nb1 Ra5 15.Be2=+) 14.Rd1 (14.Rc1 Qb6=) 14...d4=+ 15.Nb1 Ra4 16.Be2 (16.Nc3 Rb4=) 16...Be6 17.a3 (17.Nc3 Ra3 18.ed4 Qd4 19.Qd4 cd4=+) 17...Re8 18.0-0 Bb3 (18...Nbd7 19.ed4 Rd4 20.Qc2=+) 19.Rc1 Nbd7 20.Bd1 (20.Nf5 Re5 21.Bd3 de3 22.Ne3 Ne4+/–) 20...de3 21.fe3 Bd1 22.Rfd1 b6 (22...Qa5 23.Qe2=+) 23.Rc3 (23.Nf5 Qa8=) 23...Qc7 24.Rd3 Ne5=+ 25.Rd8 Ra8 26.Re8 Re8 27.e4 Qa7 28.Qc1 c4 29.Qb2 Nd3 30.Qd4=+ Qc7 31.Nc3 Qe5 32.Qe5 Ne5 33.Nf5= Kf8 34.Ne3 h5 35.Rd6 Rb8 36.Ned5 Nd5 37.Nd5 g6 38.a4+/– Rc8 39.Nc3 Rb8 40.Kf2 Ke7 41.Rb6! Rb6 42.Nd5 Kd6 43.Nb6 f5 44.Nd5 Kc5 45.Ke3 Ng4 46.Kf4 fe4 47.b6 e3 48.Ne3 Nf6 49.b7 Nd7 50.Nc4 Kc4 51.Kg5 Kb4 52.h4 Ka5 53.Kg6 Kb6 54.Kh5 Kb7 55.Kg6 Kc6 56.h5 (56...Ne5 57.Kg7+-) 1–0. Van Rooijen,Peter (1700) – Prestele,Anton (1850), RI.2003.0.00001, 2003.

6.d3 Nf6 7.e3 Bd6 8.Nc3 0-0 9.Qc2 Qe7 10.Nge2 ed3 11.Qd3 =+.

6.e3 Nf6 7.Ne2 Nbd7 8.Nbc3 Bd6-/+.

6.e3 Nf6 7.d3 Bd6 8.Nc3 0-0 9.de4 de4 10.Qc2 Qe7 11.Nge2 =+.

6.e3 Nf6 7.Ne2 Nbd7 8.Nd4 Bd6 9.Nc3 Ne5 10.a4 (10.Be2 0-0-/+) 10...0-0 11.Be2 c5 12.Nb3 (12.bc6!? bc6 13.0-0-/+) 12...Nd3-+ 13.Bd3 ed3 14.0-0 (14.f3 Qc7-+) 14...d4 15.ed4 (15.Nb1-+) 15...Bh2-/+ 16.Kh1? (16.Kh2 Ng4 17.Kg3-+) 16...cd4 17.Nb1 (17.Ne4 Ng4 18.g3-+) 17...Ng4 18.f3 (18.Nd4 Be5 19.g3 Bd4 20.Bd4 Qd4 21.Nc3 Nf2 22.Rf2 Qf2 23.Qe1-+) 18...Qh4 19.fg4 Bg3 20.Kg1 Qh2 0-1. Bushwacker (1970) - SilentFury (2640), ChessWorld.net, 2018.

6.e3 Nf6 7.Ne2 Nbd7 8.Ng3 h5 9.h4 (9.a4 h4 10.Ne2 Bd6-/+) 9...Bd6-+ 10.Nf5 Be5 11.Be5 (11.Ng7?? Kf8 12.Be5 Ne5-+) 11...Ne5 12.Nd4 0-0 13.Nc3 (13.Be2 c5 14.bc6 bc6-+ (14...Nc6?! 15.Nc6 bc6 16.Bh5-/+)) 13...c5 14.Nc2?? (better 14.bc6 bc6 15.Be2-+) 14...d4 15.ed4 (15.Nb1 Qd6 16.Nca3 Nfg4-+) 15...cd4 16.Nb1 (16.Ne3 dc3 17.dc3 Qe7-+) 16...Nfg4 17.f3 (17.Nc3 dc3 18.dc3-+) 17...ef3 18.gf3 Re8 19.fg4 Nd3 0-1. Bushwacker (1905) - samurai (2805), ChessWorld.net, 2021.

6.Be5 Nd7 7.Bg3 Ngf6 8.e3 Nc5 9.Nc3 Be7 10.a4 Bg4 11.f3 –/+.

5.Bb2 Bb4 6.Be5= d6 7.Bb2 Ne4 (better 7...Bg4!?+=) 8.Bg7+/- Rg8 9.Bb2 Qg5 (9...Be6 10.a3 Ba5 11.Nf3+/-) 10.e3+- b6 (10...Qh4 11.g3 Qe7 12.a3+-) 11.Nf3 Bg4?? (11...Qe7+-) 12.Ng5 Bd1 13.Ne4 (13.Ne4 Bc2 14.Nf6 Kf8 15.Ng8 Kg8 16.Nc3 Bc3 17.Bc3+-; 13.Kd1?! Nf2 14.Ke1 Nh1 15.Nh7 Nd7+-) 1-0. onur604 (2320) - SriNandan_S (1935), lichess.org, 2020.

5.Bb2 d6 6.e3 Be7 7.Nc3 d5 8.Nf3 e4 9.Nd4 c5 10.bc6 bc6 11.f3 0-0 12.fe4 de4 13.Be2 c5 14.Ndb5 Nc6 15.0-0 Nb4 16.Rb1 Bd7 (16...Nd3 17.Qc2 Bb7 18.Bd3 ed3 19.Qb3=+) 17.a4 Be6 18.Qe1 Bb3 19.Qg3 Bc2 (19...Qd2?? 20.Ne4 Qe2 21.Nf6 (21.Bf6?! Bf6 22.Nf6 Kh8+-) 21...Bf6 22.Bf6+-) 20.Rbc1 Bd3 21.Bd3 Nd3 (worse 21...Qd3 22.Ne4 Qe4 23.Bf6 Bf6 24.Rf6+-) 22.Rb1 Ra6 23.Qc7 Nb4 24.Ba3 Re8 25.Qd8 Rd8 26.Rfd1 (26.Bc1 g6=+) 26...Kf8 (26...Rd7 27.g3=+) 27.h3 Nbd5 (27...h5 28.Bb2=+) 28.Rdc1= Nb4 29.Rd1 g6 30.Bb2 h5 (30...h6 31.Ne2=+) 31.g3 Nd3 32.Kg2 Raa8 33.Ba1 Ne5 34.Na3 (34.Nc7 Ra5=) 34...Rd3=+ 35.Rbc1 Rad8 (35...Kg8 36.Rc2=+) 36.Rc2= Ra8 37.Rcc1 Ra6 (37...Kg8 38.Ncb5 Nfd7 39.Be5 Ne5 40.Nc4 Nc4 41.Rc4=+) 38.Rb1 Kg8 39.Rb7 Bf8 40.Bb2 Nfd7 41.Nc2 (41.g4 hg4 42.hg4 f5=+) 41...f5=+ 42.Ne1 Rdd6 43.Nb5 Rdc6 44.Ra1 Nc4 45.Bc3 White plans a5 45...Ndb6 46.a5 Nd5 47.Ra4 Nb4 48.Na3 Na5 49.Rb5 Nb7 50.Ra6 (50.Rb7 Ra4 Discovered attack) 50...Ra6 51.Bb4 cb4 52.Nac2 Nc5 53.Rb4 Ra2 54.Rd4 Kf7 55.g4 hg4 (55...fg4 56.hg4 h4 57.Nb4=+) 56.hg4 Nb3 (56...Be7 57.gf5 gf5 58.Rc4=+) 57.Rd5 Ke6 (57...fg4 58.Kg3=+) 58.Rb5 Nd2 59.gf5 gf5 (59...Kf6 60.fg6 Kg6 61.Kg3=) 60.Nd4 Kd7 61.Rf5 Nc4 62.Kh3 Bd6 63.Nec2 Be5 64.Rh5 Bd4 65.Rh7 Kd6 Attacks the isolani on e3 66.Nd4 Ne3 67.Nb5 Ke5 (67...Kc6 68.Nc3 Ra1 69.Rf7=) 68.Re7 ½–½. Pierre – Majana, internet, 2019.

6.Nc3 d6 7.Nf3 0-0 8.e3 h6 9.Be2 Bf5 10.d4 ed4 11.Nd4 Bg6 12.0-0 Nbd7 13.a4 d5 14.a5 Qe7 15.a6 ba6 16.ba6 Qd6 17.Na4 Bb4 18.Nb5 Qc6 19.Qb3 Bc5? (better is 19...Bd2+=) 20.Bf6+- (20.Nc5 Nc5 21.Qc3 Rfb8+-) 20...Nf6 21.Rac1 (21.Nc5?! Qc5 22.Rfc1 Qb6+/–) 21...Nd7 22.Nc5 Nc5 23.Qb4 Qb6 24.Qc5 (24.Rc5?! c6 25.Qd4 cb5 26.Bb5 Be4+-) 24...Ra6 25.Nc7 (25.Qd5?! c6 26.Qd7 cb5 27.Bb5 Ra2+/–) 25...Qc5 26.Rc5 Ra2 27.Bb5 Rc8 28.Bd7 Rf8 29.Nd5 Rd2 30.Ne7 Kh7 31.Rd5 Ra2 32.Ng6 fg6 33.e4 Rb8 34.e5 Rbb2 35.g3 Kg8 36.Be6 Kh7 37.Rd8 Ra7 38.Bg8 Kh8 39.Rc1 Re7 40.Bf7 Kh7 41.Rcc8 Rb1 42.Kg2 Re8 43.Re8 Rg1 44.Kg1 g5 45.Rh8# 1–0. usingprogram (2000) – prochess23 (2105), kurnik, 2011.

6.e3 Qe7 7.Nf3 d6 8.Be2 0-0 9.d4 ed4 10.Nd4 Bb4 11.Bc3 d5 12.0-0 Ne4 (12...Bd6 13.Nd2=) 13.Bb2 (13.Bb4 Qb4 14.Qc2 Qe7+=) 13...Re8 (13...Be6 14.Qc2=) 14.a3 (14.Nc2 Qc5+=) 14...Ba5 15.Bd3 c5 16.Nb3 Bb6 17.Be4 (17.N1d2 f5=) 17...de4=+ 18.N1d2 Be6 (18...Qg5 19.Kh1=+) 19.Qc2= f5 20.Nc4 Bc4 21.Qc4 Qf7 22.Nd2 Nd7 23.Qf7 Kf7 24.Nc4 Bc7 25.Rfd1 Rad8 26.Kf1 Nb6 (< 26...Bh2 27.g3 Re7 28.Nd6 Ke6 29.Kg2 Bg3 30.fg3+/–) 27.Nb6 Bb6 28.Ke2 g6 29.a4 Ba5 30.Rac1 b6 31.f3 ef3 32.gf3 Ke6 33.Rd8 Rd8 34.Rd1 Rd1 35.Kd1 g5 36.Ke2 h5 37.h3 (37.e4 c4=+) 37...Bb4 (37...c4 38.e4 fe4 39.fe4–/+) 38.Kd3 (38.e4!?=) 38...g4–/+ 39.fg4 fg4 40.hg4 c4 41.Ke4 c3 42.Bc1 h4 43.Kf3=+ Ke5 44.e4 c2 45.g5 h3 46.g6 Bf8 47.a5 ba5 48.b6 Kf6?? 49.e5!+- Kg6 50.b7 Bh6 51.b8Q Bc1 52.Qc7 (52...Bh6 53.Qc2 Kg5 54.Qe4+-) 1–0. Boysan,Ferit – Ganbold,Odondoo (2405), Internet Section, 2004.

6.Be5 Bf2 7.Kf2 Ng4 8.Kg3 Ne5 –/+.

6.Nf3 d6 =+.

7.Nc3 0-0 8.Nge2 =+.

7.Nc3 d5 8.Nf3 e4 9.Nd4 0-0 10.Be2 Bd4 11.ed4 c5 (11...Qe7 12.d3=+) 12.bc6 (12.dc5!? d4 13.Nb1=) 12...Nc6=+ 13.Nb5 Bf5 14.a4 Re8 15.0-0 Re6. ilmarinens (2765) – pcmvr (2815), net–chess.com, 2006.

7.Nc3 Be6 8.Nf3 Nbd7 9.Be2 0-0 10.0-0 Ba3 11.Ba3 Ra3 12.Qc2 Re8 (12...Qa8 13.Ng5 Bb3 14.Qc1=) 13.Ng5= Nc5 (13...d5 14.f4 d4 15.fe5 Ne5 16.Rf6 Qf6 17.Qh7 Kf8 18.Ne6 Qe6 19.ed4=) 14.d4 ed4 (14...Ncd7 15.d5 Rc3 16.Qc3 Nd5 17.Qc2 Qg5 18.Bf3-+) 15.ed4 h6 (15...Ncd7 16.Ne6 Re6 17.Bf3=) 16.Qb2 (16.dc5 hg5 17.b6 A) < 17...dc5 18.Nb5 Ra5 19.Nc7+/– (19.bc7?! Qe7+=); B) 17...Bd7 18.cd6 cd6=) 16...Ra8 (16...Qa8 17.dc5 hg5 18.b6 dc5 19.bc7+/–) 17.Nf7.

7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 0-0 (10...Qe7 11.Qe2=+) 11.Bd3 b6 (11...Nbd7 12.Nge2=) 12.Qf3 (12.Nge2 Re8=) 12...Ra3 (12...Re8 13.Nge2 Ra3 14.Rc1=+) 13.Nge2 Re8 14.Rc1 Bg4 15.Qf4 Nbd7 16.Qd2 Be2 17.Be2 (17.Ne2 Qa8 18.0-0 Ra2=+).

7.Ne2 Be6 =+.

6.Qc2 d5 7.f3 Bf5 8.e3 Nbd7 9.Ne2 Nc5 10.Nd4 Bg6 11.f4 Qd7 12.Ba3 Nd3 13.Bd3 ed3 14.Qb2 Qg4 15.0-0 Be4 16.Nf3 Ba3 17.Na3 0-0 18.Nb1 c5 19.Nc3 Bf3 20.Rf3 Qd7 Black prepares d4 21.a4 Rfe8 22.a5 c4 23.Nd1 Ne4 24.Nf2 d4 25.Ne4 Re4 26.ed4 Re2 27.Rf2 Rae8 28.Raf1 Rf2 29.Rf2 h6 30.f5 Ra8 31.a6 ba6 32.ba6 Ra6 33.Rf1 Qa7 34.Qc3 Ra2 (34...Rd6 35.Rf4 Qa2 36.h3–/+) 35.Qc4+= Rd2 36.h3 Qb7 37.d5 Qb2 38.Qg4 h5 (38...h5 39.Qg5 f6–/+) 0–1. marekt (2130) – willitheblitzer (2145), gameknot.com, 2014.

6.e3 d5 7.a4 Bb4 8.Bc3 Bd6 9.d4 c6 10.Nd2 0-0 11.Ne2 Bd7 12.Ng3 Qc7 13.Be2 cb5 14.ab5 Ra1 (worse 14...Qc3 15.Ra8 Rc8 16.0-0+/-) 15.Qa1 (15.Ba1!? Bb4 16.0-0-/+) 15...Rc8 16.Bb2 (16.Nb1 h5 17.Nh5 Nh5 18.Bh5 Bb5-+) 16...Bb4-+ 17.Qd1?? (better 17.Ngf1-+) 17...Qc2 18.0-0 (18.Ba1 Bd2 19.Qd2 Qb1 20.Bd1 Qa1-+) 18...Qb2 (worse 18...Bd2 19.Ba3 Be6 20.Qc2 Rc2 21.Rb1-+; worse 18...Qd2 19.Qd2 Bd2 20.Ra1-+) 19.Nb1 (19.Nb3-+) 19…h6 0-1. Bushwacker (1880) - doclolly (2670), ChessWorld.net, 2020.

6.e3 d5 7.a4 Nbd7 8.Ne2 (8.Nc3 Bd6-/+) 8...Bd6 (8...Nc5 9.Nf4 Bd6 10.Nh5 Nh5 11.Qh5-/+) 9.Nd4 0-0 10.Nc3 Ne5 11.f4? (better 11.Be2-/+) 11...ef3!-+ 12.Nf3 (12.Nf3 Nf3 Double attack; 12.gf3 Nfg4 Decoy) 12...Nf3 13.Qf3? (better 13.gf3 Re8 14.Qb3-+) 13...Bg4 14.Qf2 d4! 15.ed4 Re8 16.Ne2 (16.Be2 Bb4 17.0-0 Bc3 18.Bc3 Re2 19.Qh4-+) 16...Ne4 17.Qe3 (17.Qg1 Qg5 18.0-0-0 Ra4 19.Qe3 Qb5 20.Nc3-+) 17...Qh4 18.g3 Ng3 (18...Ng3 19.Qf2 Re2 20.Be2 Re8-+) 0-1. Bushwacker (1875) - luenix (2555), ChessWorld.net, 2013.

6.e3 d5 7.d3 Bb4 (7...Bd6 8.Nd2=+) 8.Bc3 Bc3 (8...Qe7 9.Bb4 Qb4 10.Qd2=+) 9.Nc3 0-0 (9...Ra3 10.Rc1=+) 10.de4= Ne4 11.Nge2 (11.Ne4 de4 12.Qd8 Rd8=+) 11...Be6=+ 12.Ne4 de4 13.Qd8 Rd8 14.a4 Ra5 15.Nd4 (15.Nc3 f5=) 15...Bd5=+ 16.Ne2 (16.Kd2 Kf8=) 16...Bb3 (16...c6 17.Nc3=) 17.Nc3= f5 18.Be2 (18.Rb1 Be6= (18...Ba4? 19.Ra1+-)) 18...Nd7=+ 19.Ra3 (19.Bd1 Be6=+) 19...Be6 20.0-0 (20.f3 ef3 21.Bf3 Nc5=+) 20...Nc5 (20...Ne5 21.Rd1 Rd1 22.Nd1=+) 21.Rd1 Rd1 22.Bd1 Bd7 23.Kf1 c6 24.bc6 Bc6 25.Ra2 Kf7 26.Rb2 Nd3 27.Rd2 Kf6 28.h4 Rc5–/+ 29.Ne2 Rc4 30.Ra2 Ke5 31.Bb3 Rb4 32.Bc2 Bd5 33.Ra3 Rb2 34.Rc3 Nb4 35.Bd1 Na2 36.Rc5 b6 37.Rb5 Rb5-+ 38.ab5 Bc4 39.Ke1 Bb5 40.Nd4 Nc3 41.Bb3 Bd7 42.Kd2 Nd5 43.g3 g6 44.Bc2 Nf6 45.Bb3 Kd6 46.Kc3 Ng4 47.Bg8 Be8 48.Kd2 h5 49.Ke1 b5 50.Be6 Kc5 51.Bb3 Kb4 52.Bd5 Kc3 53.Ne2 Kb2 54.Nd4 b4 55.Bb3 Ne5 56.Kd2 Nf3 (57.Nf3 Kb3-+) 0–1. Plock,Joerg – Woelfelschneider,Peter, corr SOK–99–E005A, 1999.

6.e3 d5 7.Ne2 Bd6 8.Nbc3 0-0 9.Ng3 (9.d3 Be5+=) 9...Nbd7 (9...Re8 10.Be2+=) 10.Be2 (10.d3 Nc5+=) 10...Ne5 (10...Nc5 11.d3–/+) 11.d3 (11.0-0 Re8+=) 11...ed3 12.Bd3 Nd3 (12...Bg4 13.Qc2–/+) 13.Qd3 Re8 14.0-0 (14.Nd5? Nd5 15.0-0 Be6-+) 14...Be6 (14...Bg3 15.hg3 Be6 16.a4+=) 15.Nce2 (15.Nf5 Ng4 16.Nd6 Qd6+=) 15...Ng4 16.Nf4 (16.h3!? Ne5 17.Qd4+=) 16...Qh4–/+ 17.Nh3 Ne5 18.Qc3 (18.Qd4 Qd4 19.Bd4 Ra5–/+) 18...f6 (18...Bh3 19.gh3 f6 20.Qc2-+) 19.Nf4 Ng4 (19...Nc4 20.Ne6 Re6 21.Qc2–/+) 20.Nh3 Be5 (20...Nh6 21.Rfd1 Nf7 22.Nf4 Bf4 23.Rd4 Bg3 24.Rh4 Bh4 25.Qc7–/+) 21.Qc1 Re7 22.Bd4 b6 (22...Bg3 23.hg3 Qh5 24.Qc5+=) 23.a4 Bd7 (23...Bg3 24.hg3 Qh5 25.Rd1+=) 24.Qd2 (24.Be5 fe5 25.Qc7 Nh2 26.Kh2 Bh3 27.Qb6 Re6+/–) 24...Nh6 (24...Bg3!? 25.hg3 Qh5=) 25.Be5+= Bh3?? (better is 25...Re5 26.f4 Ree8+/–) 26.Qd5+- Kf8 27.Qa8 Re8 28.Bf6 gf6 29.Qc6 Be6 30.Qe4 Qg5 31.Qh7 Re7 32.Qc2 Ng4 33.Qc3 Qh4 34.h3 Ne5 35.e4 Rh7 36.Nf5 Qe4 37.Ng3 Qh4 38.f4 Nd7 39.f5 Bc4 40.Rfd1 Ne5 41.Re1 Rg7 42.Re3 Rd7 43.Re4 Qg5 44.Re3 Bd3?? 45.Rae1+- Bf5 46.Nf5 Qf5 47.Rf1 Qg5 48.Qe5 Qe5 49.Re5 Kg7 50.Re4 Rd6 51.Rc1 f5 52.Rec4 Kf6 53.Rc7 Ke5 54.R7c6 Rd4 55.R1c4 Rd1 56.Kh2 Kd5 57.Rh4 Ke5 58.Rb6 f4 59.a5 (59.a5 Ra1 60.Rh5 Ke4 61.Re6 Kd4 62.b6+-) 1–0. Kleist,Werner (1665) – Grams,Arthur (1770), 17sen.Bad Sooden op Hessen, 2005.

6.e3 d5 7.Ne2 Bd6 8.d3 0-0 9.de4 Ne4 10.Nbc3 Bb4 11.f3 Nf6 12.Nd4 Re8 13.Kf2 Nbd7 14.Qb3 Ba5 (14...Qe7 15.Nf5 Qe6 16.Qb4 Qf5 17.Rc1=+) 15.Nd5= Nc5 16.Nf6 Qf6 17.Qc4 (17.Qc2 Bd2 18.Bc1 Bc3-+) 17...Bb6 (17...Bd2!? 18.Bc1 Ne4 19.Kg1 Be1=+) 18.a4 Be6 19.Qb4 Ne4 20.Kg1 (20.Ke2 Ba5 21.Ne6 Qe6=+ (worse 21...Bb4 22.Bf6 Re6 23.Bd4+-)) 20...Qh6 21.Bc1 Ba5 22.Qa3 Nd2 23.Kf2 Nf1 24.Kf1 Rad8 25.Qd3 c5 (25...Re7 26.Bb2=) 26.bc6= bc6 27.Kf2 (27.Qc2!?=) 27...c5=+ 28.Qb5 Bc3 29.Ne6 Rb8 (worse 29...fe6 30.Ra2=; worse 29...Re6 30.Ra2=) 30.Qd3 Ba1 31.Nc5 Bb2 32.Nb3 (32.Qc2 Bc1 33.Qc1-+) 32...Red8-+ 33.Qc2 0–1. Marekt – Jhgrau, gameknot.com, 2019.

6.Bf6 Qf6 7.Nc3 Qe6=+.

4.Bb2 d6 5.a4 Bd7 (5...Nf6 6.e3–/+) 6.Nc3 (6.Nf3=+) 6...c6 (6...Nf6 7.e3–/+) 7.e3 (7.Ne4 f6 8.Nc5 dc5 9.ba6 Na6=) 7...cb5 (7...ab5 8.ab5 Ra1 9.Ba1=) 8.ab5= Be6 (8...Nf6 9.d4 ed4 10.ed4 Qe7 11.Be2=) 9.h4 (9.d4 ed4 10.ed4 Bb4=) 9...Nd7 (9...Nf6 10.d4 ed4 11.ed4=) 10.ba6 (10.d4 Bb4=) 10...ba6 (10...Ra6 11.d4 Qb6 12.Ra6 (< 12.dc5 Qb2 13.Rc1 Nc5–/+) 12...ba6 13.Qd2=+) 11.g4 (11.d4 Qb6 12.dc5 Qb2–/+) 11...f6 (11...Rb8 12.Na4=+) 12.Ne4 Ne7 (12...Qb6 13.Nc5 Nc5 14.Ba3=+) 13.g5 (13.Nc5 Nc5 14.d4 ed4 15.ed4 Ne4+=) 13...fg5 (13...Rb8 14.Bc3 Bf5 15.Ng3=) 14.Ng5 (14.hg5 0-0=) 14...Bf5 15.e4 (15.Bh3 Bh3 16.Rh3 Qb8=) 15...Bg6 (better is 15...Qb6 16.ef5 Bf2 (16...Qb2?! 17.Ne6=) 17.Ke2 Nf5-+ (17...Qb2 18.Kf2 0-0 19.Ne6+/–; 17...Bg1?! 18.Bh3–/+)) 16.h5= Bf7 17.Qf3 (17.h6 Qb6 18.hg7 Bf2 19.Ke2 Bc4 20.Kf3=) 17...Nf6 (17...0-0!? 18.Qg3 Qb6–/+) 18.Nf7 (18.h6!? 0-0 19.hg7 Kg7 20.Nf7 Rf7 21.Nh3+/–) 18...Kf7= 19.h6 g6 (19...Qb6 20.Rb1 Bd4 21.hg7 Kg7 22.Qg3 Ng6-+) 20.Bc1 (20.Nh3 Nc6+=) 20...Re8 (20...Rf8 21.Bb2=+) 21.d3= Neg8 22.Bg5 Re7 23.Bh3 Bd4 24.Ra2 Qb6 25.Kf1?? Qb1-+ 26.Kg2 Qa2 27.Ne2 Qb2 28.Ng3 Rae8 29.Bg4 Qb7 30.Bh5 gh5 31.Nh5 Re6 32.Ng7 R6e7 33.Nf5?? Qd7 34.Ng7 Qg4 35.Qg4 Ng4 36.Be7 Re7 37.Nf5 Nf2 38.Rf1 Rd7 39.Rf2?? Bf2 40.Kf2 a5 41.Ke2 a4 42.Kd2 a3 43.Kc2 Rb7 44.Nd6+= Ke6 45.Nb7 Nh6 46.Kb3 Kd7 47.Ka3 Kc6 48.Nd8 Kc5 49.Ne6+/– Kd6 50.Ng7 Kc5 51.Ne6 Kd6 52.Ng5 Kc5 53.Nh7 Kd4 54.Nf6+- Kd3 55.c5 Nf7 56.Ne8 Nd8 57.Nf6?? Kd4?? 58.Kb4+- Kd3 59.Kb5 Kd4 60.c6 Nc6 61.Kc6 Ke3 62.Kd6 Kf4 63.Ke6 (63...Kg5 64.Ke5+-) 1–0. riverborne – klopfer, Live Game Caissa's Web, 2005.

4.Bb2 d6 5.e3 Nf6 6.a4 Be6 7.Nc3 Bb4 (7...0-0 8.Nf3=+) 8.Nd5= Bd5 9.cd5 Nd5?? (better 9...Nbd7!?=) 10.Qb3+- c6 11.e4 Qa5 (11...Bd2 12.Kd2 Nf6 13.Bd3+-) 12.ed5 Bd2 13.Kd1 c5 (13...Bh6 14.Nf3 cd5+-) 14.ba6 Na6 15.Qb5 Qb5?? (15...Ke7 16.Nf3 Nc7+-) 16.Bb5 Ke7 17.Kd2 Nb4 18.Bc4 b5 (18...h5 19.Nf3+-) 19.ab5 Ra1 20.Ba1 Ra8 21.Nf3 e4 (21...g5 22.g4+-) 22.Ng5 h6 (22...f6 23.Ne4 Kd7 24.Bc3+-) 23.Ne4 f5 24.Ng3 g6 25.Re1 Kf7 (25...Kd7 26.Bg7 Ra4 27.b6+-) 26.Bc3 Na2 27.Ra1 Nc3 28.Ra8 (28.Ra8 Nb5 29.Bb5+-; 28.Kc3?! Ra1 29.Nf1 Ke7+-) 1–0. Janek – tscjs, internet, 2018.

4.Bb2 d6 5.Nf3 ab5 6.cb5 Be6=+.

4.Nc3 Nf6 5.e3 d6 (5...0-0 6.Nge2–/+) 6.Nf3 Bg4 7.h3 Bf3 (7...Bh5 8.g4 Bg6 9.d4+=) 8.Qf3= Ra7 9.Bb2 0-0 10.a4 a5 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.g4 (11.Be2 Re8+=) 11...b6 (11...Bb4 12.Qf5=) 12.g5 e4? (better is 12...Nfd7=) 13.Qf5+- Nh5 (13...Nfd7!?+-) 14.Be2 g6 15.Qd5 Nd7 16.Bh5 Bb4 (16...gh5 17.Rg1 Ne5 18.Qe4+-) 17.Ne4 (better is 17.Bg4 Bc3 18.Bc3+- (18.dc3?! Nc5 19.0-0 Qe7+-)) 17...Ne5 (17...gh5 18.Qf5 d5 19.Qd5 Qa8+-) 18.Nf6 Kg7 19.Be2 Qd7 (19...c6 20.bc6 Re7+-) 20.Nd7 Re8 21.Be5 (better is 21.f4 Re6+-) 21...de5 22.Ne5 Raa8 23.Qf7 Kh8 24.Qf6 Kg8 25.c5! Rf8 (25...Bc5 26.Bc4 Mate attack; 25...bc5 26.Bc4 Mate attack) 26.Bc4 (26.Bc4 Rf7 27.Qf7 Kh8 28.Qf6) 1–0. Pilz,Erhard (2240) – Witt,Monika (1605), remoteschach.de, 2006.

4.e3 ab5 5.cb5 d5 6.Bb2 Bd6 7.Nf3 Qe7 8.Be2 Nf6 9.0-0 0-0 10.d4 e4 11.Nfd2 h6 (11...c6 12.Nc3=+) 12.Nc3 c6 13.a4 Nh7 (13...Be6 14.bc6 Nc6 15.Nb5=) 14.bc6 bc6 15.Qb3 Qh4 16.f4 ef3 17.Nf3 Qh5 (17...Qe7!?=) 18.e4+= Bf4 19.Bc1 Qg4? (better 19...Bc1 20.Rfc1 de4 21.Ne4 Qf5+/-) 20.Ne5 (20.Ng5 Qd7 21.Bf4 Ng5 22.Bb8 Ba6+-) 20...Bh2 (20...Be5 21.Bg4 (21.de5?! Qh4+/-) 21...Bd4 22.Kh1 Bg4 23.ed5+-) 21.Kh2 Qh4 22.Kg1 de4 (22...Ng5 23.Bg5 Qg5 24.ed5 Qe3 25.Kh1 Qd4 26.Nc6 Nc6 27.dc6 Be6+-) 23.Rf7 Rf7 24.Qf7 (24.Qf7 Kh8 25.Ng6) 1-0. DEFFM – GuestJLXZ, freechess.org, 2021.

4.e3 ab5 5.Qh5 d6 6.cb5 –/+.

4.e3 Qe7 5.Bb2 Nf6 6.a4 0-0 7.Nf3 d6 (7...ab5 8.cb5 e4 9.Nd4=+) 8.Be2 Re8 (8...Bg4 9.h3 Bh5 10.Nc3=) 9.Qc2 (9.Nc3 ab5 10.cb5 Nbd7=) 9...c6 (9...ab5 10.cb5 b6 11.Nc3=+) 10.0-0= Bg4 11.d3 (11.h3 Bh5 12.Nc3 Nbd7=) 11...ab5 12.cb5 cb5 13.ab5 Ra1 14.Ba1 Rc8 15.Qa4 (15.Rc1 Qd8 16.Qd1 Nbd7=) 15...Nbd7=+ 16.Nbd2 Nb6 17.Qb3 Be6 18.Nc4 (18.Qb1 Nbd5=) 18...Ra8 19.Qc2 Nfd5 (19...Nc4 20.dc4 g6 21.Nd2=+) 20.Rb1 (20.d4!? ed4 21.Nb6 Nb6 22.Nd4 Bd4 23.Bd4+= (worse 23.ed4 Ra2 24.Bb2 h6=+)) 20...Nc4 21.dc4 Nb4 22.Qd1 (22.Qc3!?=+) 22...Bf5–/+ 23.Rb2 Qc7 (better 23...Bc2!? 24.Qc1 g6–/+) 24.Rd2=+ Qa5 (24...Bc2!? 25.Qf1 e4=+) 25.Bc3= Qa3 26.Bb2 Qa4 (26...Qa2!?=+) 27.Qa4+= Ra4 28.Bd1 (better 28.Ne5!? Ra2 29.Nf3+=) 28...Ra8=+ 29.Ne1 Bb1 (29...f6 30.h4=+) 30.Bb3 Ba2 31.Ba2 Ra2 32.Kf1 Ra4 33.Ke2 Kf8 34.e4 Ke7 35.Nd3 Nd3 36.Kd3 Bb4 37.Rc2 Kd7 38.f4 f6 39.fe5 de5 40.c5 Ba5 41.Rc4 Ra2 42.Kc2 Be1 43.c6 bc6 44.Kb3 Ra5 45.bc6 Kc7 46.Ba3 Ra8 47.Bc5 Ba5 48.Ba3 h5 49.h3 h4 50.Bc5 Rb8 51.Ka4 Bb6 52.Bb4 Re8 53.Kb5 Re6 (53...Rb8!?=) 54.Be1 (54.Rc3!?+=) 54…Rd6= ½–½. Imhof,A – Schneider,T, Lienz op, 1988.

4.Nf3 ab5 5.cb5 d6 =+.

4.Nf3 d6 =+.

4.Bb2 d5 5.e3 dc4 6.Bc4 ab5 7.Bb5 Bd7 8.Nc3 Bb4 9.Bc4 0-0 10.Nf3 Bd6 11.0-0 c6 12.d4 e4 13.Ne5 Qe7 14.Qb1 Bf5 (worse 14...Be5 15.de5 Ng4 16.Ne4+-) 15.f3 Be5 (15...Nbd7 16.Nd7 Qd7 17.fe4=) 16.de5 Qe5? (better 16...Nfd7 17.Ne4 b5+=) 17.Nd5+- Qd6 18.Nf6 gf6 19.fe4 Bg6 (19...Be6 20.Qe1 Bc4 21.Rd1 Ra2 22.Rd6 Rb2 23.Qg3 Kh8 24.Rfd1+-) 20.Rf6 Qc5?? (20...Qb4 21.Qc2 Nd7+-) 21.Qd3 Nd7 22.Qc3 (22.Qd7?! Qc4 23.Rf2 b5+-) 22...Qe5 (22...Nf6?? 23.Qf6 Qe3 24.Kh1 Qc1 25.Rc1 Be4 26.Qg7) 23.Qe5 Ne5 24.Be5 Rfe8 25.Bf4 Re4 26.Bb3 Rd8 (26...Kg7 27.Rd6 Bf5 28.Bh6 Kg8 29.Rad1+-) 27.Rd1 Rd1 28.Bd1 Re7 (28...Kf8 29.Kf2+-) 29.Rd6 Be4 30.a4 Kg7 (30...Bf5+-) 31.Bh6 (31.Bh6 Kg8 32.Rd8 Re8 33.Re8) 1–0. Janek – mi2431, internet, 2018.

4.Bb2 d6 5.Nc3 Be6 6.e3 Be7 7.a4 Nbd7 8.Be2 Nc5 (8...ab5 9.ab5 Ra1 10.Qa1=) 9.d4= Ncd7 (9...ed4 10.ed4 Nce4 11.d5=) 10.d5 Bf5 11.Nf3 h6 12.0-0 g5 (12...Nc5 13.Ba3 Nfd7 14.a5=) 13.Nd2 Nc5 14.f3 b6 (14...Rg8 15.e4 Bg6 16.Nb3+=) 15.e4 Bg6 (15...Bc8 16.Qc2+=) 16.Nb3 a5 17.Nc5 (17.Qc2 Qd7+=) 17...dc5= 18.Bd3 (18.Qe1 Qd6=) 18...Qd6 19.Ne2 h5 (19...0-0-0 20.f4 gf4 21.Nf4=) 20.Ng3 0-0-0 21.Nf5 (better 21.Qe2=) 21...Qd7 (better 21...Bf5 22.ef5 Nd7=) 22.Be5+- Rh7 (22...Bf5 23.ef5 Rhe8 24.Re1+-) 23.Qc1 Ne8 (23...Bf5 24.ef5 g4 25.Qc3+-) 24.Bc3 f6 (24...Bf5 25.ef5 Bf6 26.Bf6 Nf6 27.Qg5+-) 25.Qc2 (better 25.e5 Bf5 26.e6 Be6 27.Bh7+-) 25...g4?? (better 25...Bf5 26.ef5 g4+-) 26.e5 (26.Ne7?! Qe7 27.Rae1 gf3 28.Rf3 Rf7+-) 26...fe5 27.Ne7 Re7 28.Bg6 (28.Bg6 Nd6 29.Rae1+-) 1–0. Ovcharenko,Leonid – Titkov,Sergey, 2006.

4.Nc3 Bb4 5.Bb2 d6 6.e3 Bd7 7.a3 Bc5 8.Nf3 h6 (8...0-0 9.d4 ed4 10.Nd4=) 9.Be2 (9.d4 ed4 10.ed4 Bb6+=) 9...0-0 (9...e4 10.Nd4=) 10.d4 ed4 11.ed4 Ba7 12.0-0 Bb6 13.a4 c6 14.Re1 cb5 15.ab5 Re8 16.Qc2 Qc8 17.Nd5?? (better is 17.Qb3 Qc7 18.Bd3+/–) 17...Nd5-+ 18.Bd3 Re1 19.Re1 Nf6 (19...Nb4 20.Bh7 Kh8 21.Qb3 ab5 22.cb5 Kh7 23.Rc1-+) 20.c5 (20.ba6 ba6 21.d5 Ng4-+) 20...Ba5 21.Re7 (21.Ra1 Bb4-+) 21...Bb5 (21...Nd5 22.Bh7 Kf8 23.Re4-+) 22.Bf5 (22.Bb5 Kf8 23.Qe2 ab5 24.cd6 Nc6-+) 22...Bd7 23.Bd7 Nbd7 24.Qf5 Bb4 25.Re2 dc5 26.dc5 Bc5 27.Rc2 b6 28.Qd3 a5 29.Bf6 Nf6 30.g3 Qe8 31.Re2 Qd7 32.Qc2 Re8 33.Rd2 Qb7 34.Qf5 Qe7 35.Kg2 a4 36.h4 a3 37.g4 Qe4 38.Qe4 Ne4 (38...Ne4 39.Re2 Kf8-+) 0–1. dusterstar (1605) – dpwarren, gameknot.com, 2011.

4.Nc3 Bc5 5.Qc2 c6 (5...ab5!? 6.cb5 d5–/+) 6.Nf3= d6 7.e3 (7.Na4 Ba7 8.b6 Bb6 9.Nb6 Qb6+=) 7...0-0+= 8.Bb2 Qe7 9.Na4 Bb4 (9...e4!? 10.Nc5 dc5+=) 10.Nb6+= Ra7 11.bc6 Nc6 12.Nd5 Nd5 (12...Qe6 13.a3 Ba5 14.Bd3+=) 13.cd5+= Na5?? (better is 13...e4+=) 14.Qa4+- Bd2 (14...Bc5 15.Qa5 Bf5 16.Qc3+-) 15.Nd2 b6 16.Qb4 Nb7 (16...Rd8 17.Ba3 Rc7 18.Qb6+-) 17.Qb6 Nc5 18.Ba3 Rb7 (18...Rd8 19.Rc1 Rc7 20.e4+-) 19.Qa5 Qf6 (19...Rc7 20.Rc1 Bf5 21.Nb3+-) 20.Bc5 dc5 21.Qc5 Rd8 (21...Bd7 22.Rc1 Rb2 23.Qa5+-) 22.e4 (22.Qa5 Rb2+-) 22...Bg4 23.Qa5 Rdb8 24.Qa6 Rb6 (24...Qf4 25.Qd3 Bd7 26.Qg3+-) 25.Qa5 Qf4 26.Bd3 Rb2 27.Qc3 h6 28.Bc2 R2b6 29.h3 Bd7 30.g3 Qf6 31.Qa3 Qg5 32.Bd1 Rb2 33.Qc3 R2b4 34.Bc2 Ba4 35.a3 Bd7 36.ab4 Bb5 37.Qc7 Rf8 38.Ra5 Be8 39.Ra8 Qf6 40.Qc5 Qg6 41.Ba4 f6 42.Bd7 1–0. psychobishop – derekclarke, gameknot.com, 2011.

4.a4 Bc5 5.Bb2 d6 6.d4 ed4 7.ed4 Qe7 8.Be2+= Bb4? 9.Nd2?? d2 10.Qd2 Nf6 11.Ba3 0-0=+ 12.Nf3 c6 13.0-0+= h6 14.Rfe1 Ne4 15.Qc1 Nc3 16.Bc4 Qf6 17.Bb2 Nd5 18.Bd5 cd5 19.Ba3 Nd7 20.c4 Nb6 21.c5 dc5? 22.Bc5+- Rd8?? 23.Bb6 Qb6+/– 24.h3 Qf6 25.Qc2 Bf5 26.Qc7 b6 27.Rac1 Rac8= 28.Qe5 Rc1 29.Rc1 Qe5 30.Ne5 Re8 31.Nf3 Re2 32.Rd1?? Ra2–/+ 33.Rc1 Ra4 34.Rc6 Ra1 35.Kh2=+ Rf1 36.Kg3= a4 37.Rb6 Bd3 38.Nd2 Rd1=+ 39.Nf3 a3 40.Rb8 Kh7 41.b6 a2 42.b7 a1Q 43.Ra8 Rb1 44.Ra1 Rb7 45.Ne5 Bg6 46.Ra5+/– f6 47.Nc6 Rb3 48.Kh2 Rc3 49.Nb4 Rc4 50.Nd5 Rd4 51.Kg3 h5 52.h4 Be4 53.Ne3 Bb7 54.Rh5+/– Kg6 55.Rb5 Bc8 56.Rb6 Kh7 57.Nc2 Rg4+= 58.Kf3 ½–½. Steingraeber,Barbara – VHopffgarten,Clemens (Von Hopffgarten???), remoteschach.de, 2002.

4.a4 d5 5.Nf3 Bd6 6.d4 =+.

4.ba5 Ba3 5.Na3 Ra5 6.Nb5 Bd7 7.Nc3 Ne7 8.d4 e4 9.Qh5 c6 10.Rb1 b6 11.Nge2 Bf5 12.g3 Nd7 13.Bg2 h6 14.Nf4 g5 15.Nh3 Nf6 16.Qd1 Bg4 17.Qc1 Qc7 18.Qb2 b5 19.Ng1 Bh5 20.a4 0-0 21.ab5 cb5 22.Nb5 Qd7 23.Nc3 Nc6 24.Qc1 Rfa8 25.Nge2 Bf3 26.0-0 h5 27.Qd2 R5a6 28.Nc1 Bg2 29.Kg2 Na5 30.Nb3 Nc4 31.Qe1 Qf5 32.Nd2 Na3 33.Rc1 Rc6 34.Nb3 Qf3 35.Kg1 h4 36.Nd2 Qf5 37.Ndb1 Nc4 38.Nd1 Ng4 39.Nbc3 Rh6 40.f4 hg3 41.Qg3 Nh2 42.Rf2 Nf3 43.Rf3 ef3 44.Qf3 Rd8 45.Ne2 Re8 46.Ng3 Qh3 47.Qg2 gf4 48.Qh3 Rh3 49.Ne2 fe3 50.Ndc3 Rh5 51.Nf4 Rg5 52.Kf1 Rf5 53.Ncd5 Nb6 54.Nb6 Rf4 55.Ke2 Rd4 56.c4 Rd2 57.Kf3 Rf2 58.Kg3 Re5 59.Nd5 Rg5 60.Kh4 Rg7 61.Kh3 e2 62.Re1 0–1. Green Light Chess v2.13 – Amyan143, computer chess game, 2001.

4.Bb2 e4=.

4.Bb2 c6 5.Be5= Nf6 6.Nf3 d5 7.Be2 Bg4 8.0-0 Nbd7 9.Bf4 Be7 10.h3 Bf3 11.Bf3 0-0 12.Re1 Nc5 13.d3 Na4 (13...Bd6 14.Bd6 Qd6 15.Nd2=+) 14.a3 (14.c3 Bd6 15.Bg5 b4=) 14...Nd7 15.e4 d4 16.Bg4 Nf6 17.Bf3 (17.Bf5 Re8=) 17...Re8=+ 18.Qc1 Nd7 19.e5 Ndc5 20.Bg4 Qd5 21.Nd2 Ne6 22.Ne4 Nf4 23.Qf4 Nc5 24.Ng3 Ne6 The isolani on a3 becomes a target (24...Ra4 25.Nf5=+) 25.Be6= Qe6 26.Nf5 (26.Qd4 Ba3 27.Qb6 Qd7=) 26...Ba3 (26...c5 27.Rab1=) 27.Nd4+= Qd5 28.Nf5 Bc5 29.d4 Bb4 30.c3 Bf8 (30...Bc3?? 31.Qg5 g6 32.Ne7 Kf8 33.Nd5 cd5 34.Ra8 Ra8 35.Re2+-) 31.Rab1 Qc4 32.Re3 Ra3? (better 32...Qe6+=) 33.Nh6!+- gh6?? (better 33...Kh8 34.Qf7 Qf7 35.Nf7 Kg8+-) 34.Rg3 Bg7 35.Qf6 (35.Qh6 Kf8 36.Qg7 Ke7 37.Qf6 Kd7 38.Qd6 Kc8 39.Qa3 Qe6+-) 35...Kf8 36.Qg7 (36.Rg7?! Qe6 37.Rh7 Qf6 38.ef6 Kg8 39.Rh6 Rc3+-) 36...Ke7 37.Qf6 Kd7 38.Qd6 Kc8 39.Qa3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 c6 5.Be5= Nf6 6.Nf3 Be7 7.Bd3 0-0 8.0-0 d6 9.Bd4 Nd5 10.Qe2 Bf6 11.Be4 Re8 (better 11...Nb4 12.Nc3 d5 13.Bf6 Qf6-/+) 12.Bd5+/- cd5 13.Bf6 Qf6 14.Nc3 Bg4 15.Qb5 Bf3?? (better 15...Nc6 16.Nd5 Qf5+-) 16.Qe8 (16.gf3?! Nc6+=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 Nc6 5.Bb5 Nge7 6.Nf3 d6 7.0-0 Bd7 8.d4 ed4 9.ed4 Ng6 10.Re1 Be7 11.Nc3 (11.d5 Nce5 12.Bd7 Qd7 13.Ne5 de5 14.Be5 Ne5 15.Re5 0-0=) 11...0-0= 12.Nd5 Re8 13.a4 Na7 14.Bc4 Nc6 15.Qd2 Bf6 16.Re8 Be8 17.a5 Bd7 18.Bc3 Be6? (better 18...Ra7+=) 19.Nf6+- Qf6 20.d5 (20.d5 Qf4 21.Qf4 (21.de6?! Qc4 22.ef7 Kf7=; 21.dc6 Qd2 22.Nd2 bc6+-) 21...Nf4 22.de6 Ne6 23.Kf1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 d6 5.Bb5 c6 6.Be2 Nf6 7.d4 Nbd7 8.Nf3 Qc7 9.c4 Be7 10.Nc3 0-0 11.0-0 e4 12.Nd2 d5 13.Qc2 Re8 14.cd5 cd5 15.Rfc1 Bd6 16.h3 Nf8? (better is 16...Qb6!?=) 17.Nce4+/– Qe7 18.Nd6 Qd6 19.a4 Bd7 20.a5 Rec8 21.Qb3 Bc6 22.a6 ba6 23.Ra6 Ra6 24.Ba6 Rb8 25.Ba3 Rb3 26.Bd6 Rb6 27.Bd3 Bd7 28.Be5 h6 29.Nb1 Ne4 30.f3 Ng5 31.Nc3 Be6 32.Na4 Rb7 33.Rc7 Rc7 34.Bc7 Nd7 35.Kf2 Nh7 36.e4 Nhf6 37.Nc3 Kf8 38.e5 Ne8 39.Ba5 f6 40.Bg6 fe5 (40...Ke7 41.f4 fe5 42.fe5 Nb8+-) 41.Bb4 Kg8 42.Be8 ed4 43.Nd5! 1–0. blingor (1615) – grandma (1620), gameknot.com, 2011.

4.Bb2 Qe7 5.Nf3 Nc6 6.Be2 (6.Bb5? Qb4 7.Nc3 Qb2 8.Bc6 dc6 9.Ne5 Nf6-+) 6...b4 7.d3 e4 (7...d5!?-/+) 8.de4=+ Qe4 9.Nbd2 Qg6 10.0-0 Be7 11.Bd3 Qh6 12.Nd4 Nd4 13.ed4 Nf6 14.Re1 Nd5 15.Bc4 Nc3 (15...Nf4!? 16.d5 d6=+) 16.Bc3 bc3 17.Qe2 0-0?? (17...Qh4 18.g3 Qf6+-) 18.Qe7+- cd2 (18...d5 19.Bd5 Be6 20.Re6 fe6 21.Qe6 Qe6 22.Be6 Kh8+-) 19.Qf7!! (19.Qf7 Rf7 20.Re8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 a6 4.e4 ab5).

4.Bb5 c6 5.Be2 d5 6.c4 Nf6 7.Bb2 dc4 8.Be5 Nbd7 9.Bd4 b5 10.Nf3 Nc5 11.Nc3 Bd6 12.Qc2 Qe7 13.0-0 0-0 14.a4 b4 15.Bc5 Bc5 16.Nd1 b3 17.Qc1 Bg4 18.Qc4 1–0. Mai,Wolfgang (2025) – Dirim,Omer (1960), ICCF, 2012.

4.Bb5 c6 5.Be2 d5 6.Nf3 e4 7.Nd4 Nf6 8.0-0 Bd6 9.a4 0-0 10.Ba3 Ba3 11.Na3 Ra4 12.c4 Ra5 13.cd5 Rd5 14.Nc4 b5 15.Qb1 (15.Na5 c5 16.Nb5 Rd2–/+) 15...Qc7 (15...Bd7 16.Na5–/+) 16.Na5=+ Attacking the backward pawn on c6 16...Bg4 17.Bg4 Ng4 18.g3 Re8 19.h3 Nf6 20.Kg2 h5 21.Rc1 Increases the pressure on the backward pawn 21...Qd7 22.Nac6 Nc6 23.Nc6 h4 (23...Rd2 24.Rc2=+) 24.Nd4= Attacks the isolani on b5 24...hg3 25.fg3 Nh7 26.h4 Nf8 27.Qb4 Ne6 28.Nb3 g5 29.Rh1 (29.h5 Ng7 30.Rc5 Nh5 31.Rd5 Qd5=+) 29...Rd3 30.hg5 Ng5 31.Raf1 Nf3 32.Rh5 Qg4 (32...Nd2?? 33.Rg5 Kh7 34.Rh1 Qh3 35.Rh3) 33.Rfh1 (33.Rb5 Kg7 34.Nd4 Rd4 35.Rg5 Qg5 36.ed4 Rh8 37.Rf3 ef3 38.Kf2 Qg4 39.Qb2 Rh2 40.Ke3 Qg3 41.d5 Kg8 42.Qb1 Qe5 43.Kd3 Qf5 44.Kc4 Qb1 45.Kc5 Rd2 46.Kd6 Qb6 47.Ke5 Rd4 48.Kf5 Kg7 49.d6 Qb5; 33.Qb5?! Red8 34.Nd4 Rd2 35.Rf2 Rf2 36.Kf2 Nd4 37.Qg5 Qg5 38.Rg5 Kh7 39.ed4 Kh6=) 33...Red8 34.Rh8 (34.Rb5 Rb3 35.Qa5 Rd2 36.Qd2 Nd2 (36...Rb5?? 37.Qd8 Kg7 38.Qh8 Kg6 39.Rh6 Kg5 40.Qf6) 37.Rb3 Qf3 38.Kh3 Qh1 39.Kg4 Qf3 40.Kg5 Nb3 41.g4 Nd2 42.Kh4 Kg7 43.g5 Nf1 44.g6 Ne3 45.gf7 Qg4) 34...Kg7 35.R1h7 Kg6 36.Rh6 (36.Qb5 Ne1 37.Kh2 Qe2 38.Kh3 Qf1 39.Kg4 f5 40.Qf5 Qf5 41.Kh4 Nf3) 36...Kg7 37.R6h7 Kg6 38.Rh6 (38.Qb5 Ne1 39.Kh2 Qe2 40.Kh3 Qf1 41.Kg4 f5 42.Qf5 Qf5 43.Kh4 Nf3) 38...Kg7 39.R6h7 Kg6 ½–½. Silent Move (2115) – sbacat (2325), redhotpawn.com, 2016.

4.Bb5 Nf6 5.a4 Bc5 6.h3 c6 7.Bc4 d5 8.Bb3 Bf5 9.Qf3 Be4 10.Qg3 Nbd7 11.Qg7 Rg8 12.Qh6 Rg6 13.Qh4 Bg2 14.Rh2 Qc7 15.Ra2 e4 16.f4 ef3 17.Rg2 fg2 18.Ra1 Qh2 19.Kf2 Ne4 20.Kf3 Qg1 21.Bd5 Qf1 22.Qf2 Qf2 23.Ke4 Qh4 24.Kd3 Ne5 25.Ke2 Qh5 26.Bf3 Qf3 27.Ke1 g1Q# 0–1. Chad's Chess V015 – LarsenVB00407, Computer chess game, 2001.

4.Bb5 Nf6 5.Bb2 c6 6.Be2 d6 7.Nf3 g6 8.0-0 Bg7 9.Nc3 0-0 10.a4 b6 (10...Na6 11.a5=+) 11.d4 ed4 (11...e4 12.Nd2 d5 13.f3=+) 12.ed4 (12.Nd4 c5 13.Ndb5 d5=) 12...Re8 13.Bd3 (13.Ba3 Bf5=) 13...Bg4 (13...Na6 14.Ba3=+) 14.h3= Be6 15.Re1 Qd7 (15...Na6 16.Ng5=) 16.Ng5 d5 (16...Na6 17.Ne6 Re6 18.Re6 Qe6 19.a5+=) 17.Ne2 (17.Qf3 Bf5 18.Re8 Ne8=) 17...Qc8 (17...Bf5 18.Qd2=) 18.Ng3 Bd7 19.Qd2 Bh6 (19...Re1 20.Qe1 c5 21.dc5 Qc5 22.Ra3=+) 20.h4 (20.Qf4 Re1 21.Re1 Qd8+/-) 20...Na6 21.Qf4 Qd8 (21...Bg7 22.Re8 Be8 23.h5+=) 22.Re5 (22.Re8 Be8 23.a5 ba5 24.Bc3=) 22...Nb4= 23.h5 Bf8 24.hg6 hg6 25.Qf3 (25.Rae1 Nd3 26.cd3 Ra4-/+) 25...Bd6-/+ 26.Bf5? (better 26.Bc3-/+) 26...gf5-+ 27.Rae1? (27.Nf5 Bf5 28.Qf5-+) 27...Be5 28.de5 Ng4 29.Nh3 Ra4 30.Qc3 (30.Nf5 Nc2 31.Re2 Rb4-+) 30...Be6 31.Nf5 (31.Nh5 Qh4 32.Nf6 Nf6 33.ef6-+) 31...Bf5 32.e6 f6 33.Nf4 (33.f3 d4 34.e7 dc3 35.ed8Q Rd8 36.Bc3 Ne5 37.Be5 fe5-+) 33...Nc2 34.Re2 Rf4 35.Qg3 Re4 36.Re4 de4 (36...de4 37.Qg4 Bg4 38.Ba3 Na3 39.Kh2 Kg7 40.Kg3 Be6 41.f4 Qd2 42.f5 Qe3 43.Kg4 Rh8 44.fe6 Qg5) 0-1. Bushwacker (1950) - IanWood (2100), ChessWorld.net, 2013.

4.Bb5 Nf6 5.Nf3 e4 6.Nd4 c6 7.Be2 d5 8.Bb2 Bd6 9.c4 dc4 10.Bc4 (10.a4 Nbd7 11.Na3 Ba3 12.Ba3 Ne5+=) 10...0-0 11.Qc2 Na6 12.a3 Nc5 13.Nc3 Be5 14.Nce2 (better is 14.0-0!?–/+) 14...Nd3!-+ 15.Bd3 ed3 16.Qc5?? (better is 16.Qd3 c5 17.f4-+) 16...Ra5 (16...Ra5 17.Qc4 de2-+; 16...de2?! 17.Qe5 Re8 18.Qg3–/+) 0–1. purplegadge (1785) – uberlebende (1925), gameknot.com, 2014.

5.Bc4 b5 6.Bb3 c5?? 7.d3?? (better is 7.Bf7 Kf7 8.Qf3 Nf6 9.Qa8+-) 7...Nf6 8.Nf3 e4 9.de4 c4 (9...Ne4? 10.Bf7 Ke7 11.Bd5 Qa5 12.Nfd2+-) 10.e5 Ne4 11.Qd4? (11.Qd5 Qa5 12.Bd2 Nd2 13.Nbd2 cb3 14.cb3–/+) 11...Bb7 12.Bc4 bc4 13.Qc4 Qa5 14.Bd2 Nd2 15.Nbd2 Ba6 16.Qg4 Nc6 17.c4 Ne5?? (17...Rb8 18.0-0 Ne5 19.Ne5 Qe5 20.Rab1–/+) 18.Ne5?? (better is 18.Qe4 Bc4 19.Ne5+=) 18...Qe5–/+ 19.0-0 Bb4 (better is 19...Bb7–/+) 20.f4?? (better is 20.Nf3 Qe7 21.Qg7=+) 20...Qe3-+ 21.Kh1 (21.Rf2 Bc5 (< 21...Bd2 22.Qe2-+) 22.Qf3 Qf3 (< 22...Qf2 23.Qf2 Bf2 24.Kf2-+) 23.gf3 Ke7-+) 21...Bd2 22.Qg7 Rf8 23.Qf6 (23.Rf3 Qe4 24.Qb2 Ba5-+ (24...Bf4?! 25.Qf2 Rb8 26.Rf4 Rb1 27.Rb1 Qb1 28.Qg1 Qg1 29.Kg1-+)) 23...Bc4 24.Rfd1 Bc3 25.Rac1 (25.Qd6 Qe6 26.Rac1 Qd6 27.Rd6 Ra2 28.h3-+) 25...Bf6 26.Re1 Qe1 27.Re1 Kd8 28.Rc1 Bd5 (29.Rc2 Re8-+) 0–1. GorillaTest – rumrunner, Live Game Caissa's Web, 2004.

5.Bc4 b5 6.Bb3 d5 7.Bb2 c5 8.a4 –/+.

5.Bc4 b5 6.Bb3 d5 7.e4 Nf6 (7...de4 8.Qh5 Qf6 9.Bb2-+) 8.h3? (8.ed5 Nd5 9.Bb2 Nd7=+) 8...d4 (better is 8...Bc5 9.d3 de4-+) 9.Nf3 Nbd7?? (better is 9...Bd6–/+) 10.Ng5+/– h6?? (better is 10...Nd5 11.Nf7! Kf7 12.ed5 Nc5 13.Qf3 Qf6 14.dc6 Nb3 15.Qb3 Qe6 16.Qb5 Ra6+=) 11.Nf7+- Qb6 12.Nh8 c5 13.Ng6 c4 14.Nf8 Nf8 15.Qf3 cb3 16.Qb3 Be6 17.Qb4 Ne4 18.d3 Ra4 19.Qb2 g5?? 20.de4+- Qc6 21.c4 Qe4 22.Kf1 Bc4 23.Kg1 Qe1 24.Kh2 Qe4 25.Nd2 Qf5 26.Nc4 Rc4 27.Qb5 Nd7 28.Qc4 Qf2 29.Qc8 Ke7 30.Ba3 Ke6 31.Qe8 Kd5 32.Qd7 Kc4 33.Rac1 Kd3 34.Qb5 Ke3 35.Qe5 Kd3 36.Rhd1 (36...Qd2 37.Qf5 Ke3 38.Qf3) 1–0. solidsteel – YoungTurk2, Live Game Caissa's Web, 2005.

5.Bc4 d5 6.Bd3 e4 7.Be2 f5 (7...Qg5 8.g3–/+) 8.Bh5 g6 9.Bb2 Nf6 10.Be2 Bg7 11.Nh3 0-0 12.f4 b5 13.Ba3 (13.0-0 Be6=+) 13...Re8 (better is 13...Ng4 14.Bf8 Ba1-+ (14...Kf8?! 15.c3=; < 14...Qf8 15.c3+=)) 14.g4?? (better is 14.Bb2–/+) 14...Ng4-+ (14...fg4?! 15.Nf2-+) 15.Ng5 (15.Bg4 fg4 16.c3 gh3-+) 15...Ba1 16.Nh7 (16.h3 Nf6 17.h4-+) 16…Qh4 (17.Kf1 Qf2) 0–1. kingsteel – dapats, Live Game Caissa's Web, 2004.

6.Bb2 Bd6 7.f4. Myers.

6.c4 Nf6 7.Bb2 dc4 8.Be5 Nbd7 9.Bd4 b5 10.Nf3 Nc5 11.Nc3 Bd6 12.Qc2 Qe7 13.0-0 0-0 14.a4 b4 15.Bc5 Bc5 16.Nd1 b3 17.Qc1 Bg4 18.Qc4 1–0. Mai,Wolfgang (2025) – Dirim,Omer (1960), AA/C15/pr/A ICCF, 2012.

6.Nf3 Bd6 7.0-0 Ne7 (7...Nf6 8.c4–/+) 8.c4= 0-0 9.Nc3 Ng6 (better is 9...Be6!?+=) 10.cd5 f5 (10...cd5 11.Nd5 e4=) 11.Qb3+/– Kh8 12.a4 (12.d4 Nd7+/–) 12...e4 (12...Na6 13.Ba3+/–) 13.Nd4 Ne5 14.Ba3 c5 (14...Ba3 15.Ra3 cd5 16.Nd5 Nbc6+/–) 15.Ndb5?? (better is 15.Ncb5+-) 15...Nf3+= 16.Bf3 Bh2 17.Kh2 Qh4 18.Kg1 ef3 19.Ne2! (19.Bc5?? Qg4 20.g3 Qh3 21.Bf8 Qg2) 19...fe2 20.Rfc1 f4 21.Bc5 f3= 22.Nd4 fg2 23.f4 Qh1 24.Kf2 Qh2 25.Rg1+/– Rf6? 26.Nf3+- Qh3 27.Rg2 Bg4 28.Rg3 Qh5 29.Qb7 Rf4 30.ef4 (30.ef4 h6 31.Qa8 Bf3 32.Qb8 Kh7 33.Rag1 e1Q 34.Ke1 g5 35.Bd4 Qe8 36.Qe8 Bd5 37.f5 g4 38.Qg6#; 30.Qa8 Qh2 31.Rg2 Rf3 32.Ke2 Rg3 (32...Qg2?! 33.Kd3 Qh2 34.Kc4+=) 33.Kd3 Rg2-+) 1–0. pierre – pzug, internet, 2010.

6.Nf3 Bd6 7.Bb2 Nd7 8.Nc3 Ngf6 9.0-0 0-0 (9...b5 10.a4 b4 11.Na2–/+) 10.a4 c5 (better is 10...Re8!?–/+) 11.Nb5= Bb8 12.d3 b6 (12...e4 13.de4 de4 14.Nd2=+) 13.h3 (13.Nd2 Bb7=) 13...Bb7 (13...Re8 14.Qd2=) 14.Nd2 (14.c4 Qe7=) 14...Bc6 (14...Qe7 15.c4=) 15.c4 d4 (15...Re8 16.cd5 Nd5 17.Qb3=) 16.Bf3+= Bf3 (16...Qc8 17.Re1+=) 17.Qf3 (17.gf3 g6 18.Ne4 Nh5-+) 17...Bc7 (17...Ra6 18.Rfe1+=) 18.Qb7+/– (< 18.ed4 ed4 19.Ne4 Ne4 20.Qe4 Nf6+=) 18...Ne8 (18...Rc8 19.Na7 Rb8 20.Qf3+=) 19.Rfe1 (19.Ne4 Rb8 20.Qc6 Rc8+/–) 19...Nd6?? (better is 19...Rb8 20.Qf3 Ra8+=) 20.Qc7+- (20...Qc7 21.Nc7+-) 1–0. gtate (2475) – littlepawn (2245), net–chess.com, 2007.

6.Nf3 e4 7.Nd4 c5 8.Nb3 (8.Nb5 Nf6=+) 8...Qg5=+ 9.Bb2? (better 9.Kf1=+) 9...Qg2-+ 10.Rf1 c4 11.Nd4 Bh3 12.Nc3 (12.d3 Qh2 13.de4 de4-+) 12...Nf6 13.Nd5 (13.d3 Qh2 14.dc4 dc4-+) 13...Nd5 14.d3 (14.Bc4 Nf6 15.f3 Qh2 16.Rf2 Qg1 17.Ke2 ef3 18.Nf3-+) 14...Bb4 15.c3 Nc3 16.Qc2 Ne2 17.Bc3 (17.Qc3 Nc3 18.Bc3 Bc3 19.Kd1 Qf1 20.Kc2 Qd3 21.Kc1 Qd2 22.Kb1 Qb2) 17...Nc3 18.de4 (18.Qc3 Bc3 19.Kd1 Qf1 20.Kc2 Qd3 21.Kc1 Qd2 22.Kb1 Qb2) 18...Qf1 19.Kd2 Ne4 0-1. Bushwacker (1825) - ElisBonita (2360), ChessWorld.net, 2013.

6.Nf3 e4 7.Nd4 Bd6 8.a4 Nd7 9.Nc3 Ne7 10.Ba3 (10.d3 ed3 11.Bd3 b5+=) 10...Ba3–/+ 11.Ra3 b5! 12.Na2 (12.ab5 Ra3 Pinning (12...Ra3 Deflection)) 12...b4-+ 13.Nb4 c5 14.Nbc6 Nc6 15.Nc6 Qc7 16.Bb5 Bb7 17.Nd4 cd4 18.Qg4 de3 19.fe3 g6 20.Rc3 Qd6 21.Rf1 (21.0-0 f5 22.Qg3 Qg3 23.hg3 Kd8-+) 21...f5 22.Qg3 (22.Qf4 Ke7 23.Rc7 Bc8-+) 22...Ke7 23.Rc7 Qg3 24.hg3 Bc8 25.Ke2 Rd8 26.Rc1 (26.Rh1 h5-+) 26...Ba6 27.c4 (27.g4 fg4 28.c4 Bb5 29.ab5 Rdc8 30.cd5 Rc7 31.Rc7 Kd6 32.Rc6 Kd5-+) 27...Bb5 28.cb5? (28.ab5 Rac8 29.Rc8 Rc8 30.Rh1-+) 28...Ra4 29.R1c5 (29.Rh1 Rh8-+) 29...d4 30.ed4 Rd4 31.g4 (31.b6 Ke6 32.Rb5 Kd6-+) 31...fg4 32.b6 Ke6 33.R5c6 Rd6 (33...Rd6 34.b7 Rb8-+) 0–1. Marr3 – Kill bill 5 (2480), Rated game, 3m + 0s, 2010.

6.Nf3 e4 7.Nd4 Qg5 8.g3 Bh3 9.a4 Nd7 10.Nc3 Ne5 11.Bf1 Bg4 12.Be2 Bh3 13.Bf1 ½–½. Zhdanenia,Konstantin A (1870) – Rakus,Klaus (1645), SD–2011–0-00123, 2011.

(--> 1.b4 e5 2.b5 d5 3.e3 a6).

4.Bb2 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 a6).

4.cb5 c6 5.e3 cb5 (5...d5 6.d4 e4 7.bc6 Nc6 8.Nd2=+) 6.Bb5 Nf6 7.Nf3 Nc6 8.Bc6 (8...dc6 9.Ne5=) =. MasterofDisaster – TheLoser1, Live Game Caissa's Web, 2004.

4.cb5 d5 5.Nf3 Bd6 6.Nc3 –/+.

4.Bb5 Ra5 5.Qe2 (5.Nc3 Bb4 6.Bc4 Nf6=) 5...Bc5 (5...Nc6 6.Nf3=+) 6.a4 (6.Bb2 Qf6 7.Nf3 Qb6=) 6...c6=+ 7.Bc4 d6 (7...b5 8.Bb3=+) 8.Qf3 (8.Nf3 b5 9.Bb3 Bg4=+) 8...Nf6–/+ 9.d3 (9.Bb2 Qb6 10.Bc3 Bg4 11.Bf7 Kf8-+) 9...Bg4 (9...d5 10.ed5 cd5 11.Bb5 Bd7 12.Bd7 Qd7 13.Qg3–/+) 10.Qg3=+ 0-0 (better is 10...b5 11.Bb3 ba4 12.Ba4 Qb6–/+) 11.Bg5? (11.h3 Bc8=+) 11...Nbd7 (better is 11...Ne4!? 12.de4 Qg5–/+) 12.h3=+ Bh5 13.Nd2 (better is 13.Nf3=+) 13...h6?? (13...b5 14.Bb3 ba4-+) 14.Bh6+/– Bg6?? 15.Ngf3 gh6?? 16.Nh4?? Kh7-+ 17.Nf5 Nh5 18.Qg4 Qg5 19.Ne7?? Qe7 20.h4 Qf6 21.0-0 Nb6 22.Kh2 Bd4 23.Rab1 Nc4 24.Nc4 Ra4 25.Rb7 Ra1 26.Nd2 Rf1 27.Nf1 Qf2 28.Ng3 Ng3 29.Qg3 Rg8 30.Rf7 Bf7 31.Qf2 Bf2 32.c4 Rg2 33.Kg2-+ Bh4 34.Kf3 h5 35.Kg2 Bf6 36.Kh3 h4 37.Kg4 Be6 38.Kh5 h3 (39.d4 h2 40.de5 h1Q) 0–1. solidsteelpole – MMA, Live Game Caissa's Web, 2006.

4.Bb5 c5 5.Nf3 Nc6 6.Nc3 d6 7.d3 Bg4 8.h3 Bf3 9.Qf3 Nge7 (9...Nf6 10.Bg5+=) 10.Bg5 (10.Rb1 Ra7+/–) 10...f6 11.Bh4 (11.Bd2 Ra5+/–) 11...Kf7?? (11...Qa5 12.Kd2 Kf7–/+) 12.Bc4+- Ke8 13.Nd5 (better is 13.0-0 Nd4 14.Qh5 g6 15.Qd1+-) 13...Nd5= 14.Bd5 g5? (better is 14...Qa5 15.Kf1 Qc3+/–) 15.Bg5!+- fg5 (15...Be7 16.Bd2 Nb4 17.Qh5 Kd7 18.Qg4 Kc7 19.Bb4 cb4+-) 16.Qf7 1–0. Recruiter – rotweiller2, Live Game Caissa's Web, 2004.

4.Bb5 Nf6 5.d3 (5.Nf3 c6 6.Be2 Ne4=+) 5...c6 6.Bc4 d5 7.ed5 cd5 8.Bb3 (8.Bb5 Nc6 9.Bd2 Bg4=+) 8...d4 (8...Bc5 9.Be3–/+) 9.Nf3=+ Bg4 (9...Bb4 10.Bd2 Bd2 11.Qd2=+) 10.0-0 (10.Bf7 Ke7 11.Bc4 b5+/–) 10...Bb4 (better is 10...Nc6!?=+) 11.Bf7+= Kf7 (better is 11...Kf8!? 12.Bg5 e4 13.de4 h6 14.Bf6 Qf6+/–) 12.Ne5+- Kg8 13.Ng4 Ng4 (13...Nd5 14.Ne5+-) 14.Qg4 Bc3? (better is 14...Qd7 15.Qg3 Bd6+-) 15.Qe6 Kf8 16.Nc3 dc3 17.Bf4 Qe7 18.Qc8 (18...Kf7 19.Qh8+-; 18.Bd6 Nc6+-) 1–0. dale3 – studs68, Live Game Caissa's Web, 2005.

4.Bb5 Nf6 5.Nf3 c6 6.Bd3 d5 7.Qe2 de4 8.Be4 Bd6 9.d4 Ne4 10.Qe4 f5 11.Qe3 e4 12.0-0 Be6 13.Nc3 0-0 14.Re1 Nd7 15.Ng5 Bc4 16.Bb2 Nf6 17.Qc1 h6 18.Nh3 Qb6 19.a4 Ng4 20.g3 g6 21.Rb1 Rad8 22.Ba3 Qa7 23.Rd1 Rfe8 24.Bd6 Rd6 25.Qa3 Rd4 26.Rd4 Qd4 27.Rd1 Qe5 28.Qb4 Bf7 29.Rd7 e3 30.fe3?? Qe3 31.Kg2 Qe1 32.Rd3 Bd5! 33.Rd5 Ne3 34.Kf3 Qh1 35.Ke2 Qf1 36.Kd2 Nc4 37.Qc4 Qe1 38.Kd3 Qe3 0–1. WJChess_144 – Adam_16, RWBC OpenClass 3rd Edition, 2003.

4.Nf3 Ra4 5.Nc3 Ra5 6.Ne5 d6=.

5.Bc4 b5 6.Bb3 Nf6 (6...d5 7.ed5 cd5=) 7.Nc3? (7.Nf3 d6 8.d3 Bg4=) 7...Na6 (7...b4 8.Nce2 Ne4 9.d3–/+) 8.Nce2 (8.Nf3 b4 9.Ne5 bc3 10.Nf7 Qe7 11.Nh8 Qe4 12.Qe2 cd2 13.Bd2 d5+-) 8...Nc5 (8...Ne4 9.Nf3 d6 10.a4–/+) 9.Bb2=+ Nb3 10.cb3 d6 11.Ng3 Be7 12.Nh5 0-0 13.Nf6 Bf6 14.Nh3 d5 15.Qh5 de4 16.f4? Bh3 17.Be5 Be6 18.f5 Bd5 19.Bf4 Ba1 20.Bg5 Bf6 21.Bf6 Qf6 22.Rf1 e3! 23.de3 Rae8 24.g4 Qc3 25.Kf2 Qe3 0–1. blacksteelpipe – kingboy, Live Game Caissa's Web, 2005.

5.Bc4 d5 6.ed5 cd5 7.Bb3 Nc6 8.Bb2 Nge7 9.Nf3 Ng6 10.0-0 Be7 11.Re1 Bf6 (11...Be6 12.Qe2=+) 12.c4 (better is 12.Ne5!? 0-0 13.d4+/–) 12...d4 13.d3 0-0 14.Nbd2 Na5 15.Ne4 Bf5 16.Ba3 Be4 17.Bf8?? (better is 17.Re4 Re8 18.c5=) 17...Bf3 18.Qf3 Kf8 (18...Nb3?! 19.Bg7 Kg7 20.ab3 Ra1 21.Ra1=+) 19.c5 Qc7 20.Rac1 Nb3 21.ab3 Qc6 22.Qc6 bc6 23.b4 (23.g3 Ra3-+) 23...Nf4 24.Red1 Ne2 (25.Kf1 Nc1 26.Rc1 Ra3-+) 0–1. Zbynek,J – Hava,J (1690), Schneider Bohemia op–C, 2000.

5.Bd3 d5 =+.

5.Be2 Qb6 6.Nc3 (6.Nf3 d5 7.ed5 e4=) 6...Bc5=+ 7.Nh3 d6 (7...Nf6 8.Rb1 Qc7 9.Ng5=+) 8.Rb1 (8.Bg4 Nd7=+) 8...Qa7 (8...Qc7 9.Bg4=+) 9.0-0 (9.Bg4 Nd7=+) 9...Bh3–/+ 10.gh3 Nf6 (10...b5 11.a3–/+) 11.d3 (11.a4 Bd4–/+) 11...b5 12.a3 Qd7 (12...h6 13.Rb3–/+) 13.Bg4 Ng4 14.Qg4 (14.hg4 h5 15.g5 Qe6–/+) 14...Qg4 (14...0-0!?–/+) 15.hg4 h5 16.g5 h4 (better is 16...f6–/+) 17.Be3? (17.Rb3 Nd7=+) 17...Ba3 (better is 17...Be3!? 18.fe3 Ra3-+) 18.f4 h3 19.fe5 de5 20.d4 Bb4?? 21.Rb4+- Nd7 22.de5 Ne5 23.Bd4 c5 24.Bc5 Rc8 25.Rb5 Ng4 26.Nd5 Rh5 27.Ne7 Rc7 28.Rb8 Kd7 29.Rd1 Ke6 30.Rb6 Ke5 31.Bd6 Ke6 32.Bc7 Ke7 33.Bd8 Kf8 34.Rb8 Kg8 35.Rf1 Ne5 36.Bc7 Kh7 37.Be5 Rg5 38.Bg3 f6 39.Rd1 Rc5 40.Rc1 Kg6 41.c4 Kg5 42.Rb5 (42...g6 43.Rc5 Kh6 44.Rf1+-) 1–0. trex1 – schoolboy, Live Game Caissa's Web, 2005.

5.Be2 Bc5 6.Nf3 Qb6 (6...d5!? 7.Nc3 d4–/+) 7.0-0= Nf6 8.Ne5 Ne4 9.Nd3 Be7 10.Bb2 (10.Re1 d5=) 10...Bf6 (10...0-0 11.c4=) 11.Bf6 Nf6 12.Nc3 (12.Re1 0-0=) 12...d5 13.Re1 0-0 14.Bf3 (14.Bf1 Qc7=) 14...Bf5=+ 15.Re7 (15.Rb1 Qc7=+) 15...Nbd7 (15...Bd3 16.cd3 Nbd7 17.Qe2–/+) 16.Rb1 (16.Ne5 Qc5 17.Nd7 Qe7 18.Nf8 Qf8=+) 16...Qc7 (16...Qd8 17.Re2 Bd3 18.cd3–/+) 17.Nc5 b5 (17...Qd6 18.Nd7 Bd7 19.Re1–/+) 18.Nd7=+ Bd7 19.Qe2 Qd6 20.Qe5 Qe5 21.Re5 Ra3 (21...d4 22.Ne4 Ra2 23.Nf6 gf6 24.Re7–/+) 22.Rb3 (22.Re7 Rfa8=+) 22...Rb3 (22...Rfa8 23.Rb4–/+) 23.ab3 ½–½. Houthuijzen,A – Woschkat,Karl_Heinz, corr, 1991.

5.Be2 Nf6 6.Nc3 Bb4–/+ 7.Bb2 (7.f4 Ra5=+) 7...0-0 (7...d6 8.d3–/+) 8.Nf3 (8.a3 Bc3 9.Bc3 d6=+) 8...d6–/+ 9.0-0 (9.d3 Qa5 10.Qd2 b5–/+) 9...Bc3 10.dc3 (10.Bc3 Ne4 11.Bb4 c5–/+) 10...Ne4-+ 11.c4 (better is 11.Bd3 Bf5 12.Qe2–/+) 11...Ng5 (better is 11...Na6!?-+) 12.Ng5=+ Qg5 13.Bc1? Qd8 14.f4 Na6 15.fe5 de5 16.Qd8 Rd8-+ 17.Bb2 e4 18.Rf4 f5 19.g4 g6 20.gf5 gf5 21.Kh1 Rd2 22.Rg1–/+ Kf8 23.Bh5? Be6 24.Bg7 Ke7-+ 25.Bc3 Rc2 26.Rg7 Kd6 27.Bf6 c5 28.Be7 Kc6 29.Bf7 Rc1 30.Kg2 Nc7 31.Be6 Ne6 (32.Rf5 Ra2 33.Kh3 Ng7 34.Rc5 Kb6 35.Rb5 Ka6-+) 0–1. dale2 – TheBlackKnight, Live Game Caissa's Web, 2005.

5.Be2 Nf6 6.Nc3 Bb4 (6...b5 7.f4 d6 8.Bf3–/+) 7.Bb2 (7.f4 d5 8.ed5 ef4–/+) 7...Qe7 (7...d6!?–/+) 8.Nf3 d6 9.0-0 Bc3 10.dc3 (10.Bc3 Ne4 11.Bb2 c5–/+) 10...Ne4–/+ 11.Bd3 (better is 11.Nd2 Bf5 12.Ne4 Be4 13.Bd3 Bd3 14.cd3–/+) 11...Bf5 (better is 11...Nc5!?–/+) 12.Re1 Ra4 (better is 12...d5=) 13.c4+/– d5 14.cd5 cd5?? (14...Qc5 15.Re3 f6 16.dc6 bc6 17.c4 Rc4 18.Qe2+-) 15.c4 (15.Bb5 Bd7 16.Ba4 Ba4 17.Qd5 f5 18.Ne5 Na6+-) 15...Ra5 (15...Rb4 16.Be5 0-0 17.cd5+-) 16.Ne5 (16.cd5 Rd5 17.Qa4 Qd7 18.Qd7 A) 18...Kd7?? 19.Ne5 (19.Re4?! Rd3 20.Ne5 Kc7 21.Rc4 Nc6+-) 19...Kc7 20.Be4 (20.Re4?! Rd3 21.Rc1 Nc6+-) 20...Be4 21.Re4+-; B) 18...Nd7 19.Ne5 Rd3 20.Nd3 0-0+-) 16...f6 17.Be4 de4 (18.Qh5 Bg6 19.Ng6 Rh5 20.Ne7 Ke7 21.Re4 Kf7+-) 0–1. tit1 – toprod, Caissa's Web, 2004.

5.Be2 Nf6 6.d3 =+.

6.Nc3 b5 7.Bb3–/+ (7.Bd3 b4 8.Nce2 d5 9.f3 Bc5 10.Bb2 Nbd7 11.Nh3 0-0 12.c3 bc3 13.Bc3-+) 7...b4 8.Na4 Ne4 9.Qe2 d5 10.d3 Nf6 11.Qe5 Be7 12.Nf3 Ng4 13.Qf4 –/+.

6.Nc3 Bc5 7.Nf3=+ d6 8.0-0 0-0 (8...b5 9.Bb3=+) 9.h3 (9.Bb3 b5=+) 9...h6 (9...b5!? 10.Bd3 Nh5–/+) 10.Re1 Re8 11.a4 (11.Bb3 b5=+) 11...b5 (better is 11...d5 12.Bb3 Qb6–/+) 12.Be2? (12.Bb3 Qa5=+) 12...ba4 (better is 12...b4 13.Nb1 Ne4-+) 13.Ra4 (13.Na4 Nbd7=+) 13...Ra4 14.Na4 Ne4 15.Nc5 Nc5 (< 15...dc5 16.Bb2+=) 16.c4 (16.d4 ed4 17.Nd4 Qf6=+) 16...f5 (16...e4 17.Nd4–/+) 17.d3 (17.d4 ed4 18.Nd4 Re4=+) 17...Ne6 18.Qb3 (18.Qc2 Qf6–/+) 18...Nd7 19.Ba3 Nf6 (19...c5 20.Bc1–/+) 20.Qb8 (20.c5 e4 21.de4 fe4=+) 20...Nc7 (20...c5 21.Qb3–/+) 21.Rb1 Qe7 22.Qb4 Rd8 23.Qc3 Qe6 24.Rb6=+ Bd7 25.Qb4 Nfe8 26.Bd1 c5 27.Qa5 Ra8 28.Qc3 Qe7 29.Nd2 Ne6 30.Bc2 Nd4-+ 31.Bd1 Bc6 32.Qc1? Qg5 33.f3 Rc8 34.Kf2 Qh4 35.Kf1 Nf6 36.Bb2 Ne6 37.Be2? Nh5 38.Qa1?? Nef4 39.Rc6 Ng3 40.Ke1 Nge2 41.Kd1 Rd8 42.Kc2 Ng2 43.Be5 Ne3 44.Kb1 Qe1 45.Kb2 Qd2 46.Kb3 Rb8 47.Ka4 Qb4 0–1. tightfist (2095) – wstanevans (2180), net–chess.com, 2007.

6.Nc3 d5 7.ed5=+ cd5 (7...b5 8.Bb3 b4 9.Nce2–/+ cd5 10.c3 Nc6 11.d4 bc3 12.Ba4 Bd7 13.Bc6–/+) 8.Bb3 (8.Bb5 A) 8...Bd7 9.Nf3–/+ (9.Qe2 Bd6 10.Nf3 0-0 11.Bd7 Qd7 12.0-0 Nc6 13.d3–/+) 9...Bb4 10.Bb2 Bc3 11.Bd7 Nbd7 12.Bc3 Qc7 13.Bb4=+; B) 8...Nc6 9.Nf3 Bd6 10.d4 Bb4 11.Bd2 ed4 12.Nd4 0-0 13.Nc6=+) 8...Qb6 (better is 8...Nc6!?–/+ 9.Nge2 Bc5 10.0-0 0-0 11.d3 d4 12.Ne4 Ne4 13.de4–/+) 9.Qe2 (9.Bd5 Nd5 10.Nd5 Qc6= 11.Ne3 Bc5 12.Nf3 f6 13.0-0=) 9...Nc6 (9...Nbd7 10.Bd5 (10.Nd5? Nd5 11.Bd5 Qd4 12.Bf7 Kf7-+; 10.Nf3 Qe6 11.Nb5+= Kd8 12.Bb2 Bc5 13.Ne5+=) 10...Nd5 11.Nd5 Qc6 12.c4 Ra4 13.d3+=; 9...Be6 10.Qe5 Nc6 11.Qg3 Nd4 12.Rb1 Qd8 13.Ba4+=) 10.Nd5+= Nd5 11.Bd5 Nd4 (11...Qd4 12.Bc6 bc6 13.c3+=) 12.Qe5 Be6 (12...Kd8!? 13.Be4+/– (13.Bb3 Ra5=); 12...Be7 13.Bb3+/–) 13.Be6+/– Qe6 (13...fe6 14.Qe4+/–) 14.Qe6+- fe6 (14...Ne6 15.Nf3+-) 15.Kd1 Rc8 (15...Bc5 16.Nh3+-) 16.c3 Nf5 17.Rb1 Rc7 18.Nf3 Bc5 (18...Bd6 19.Re1 Kd7 20.Ng5+-) 19.Re1 Kf7 (19...Kd7+-) 20.Ng5 Kf6 (20...Kg6 21.Ne6 Rc6 22.Nf4 Kf6 23.Rb7 Bf2 24.Nd5 Kg6 25.Re5+-) 21.d4 Bd6 (21...Nd4 22.cd4 Rd8 23.Re6 Kf5 24.g4 Kg4 25.Re4 Kf5 26.Rf4 Kg5 27.Rf8 Kg4 28.Rd8 Be7+-) 22.Re6 1–0. pierre – kahlija, internet, 2008.

6.d3 d5 7.ed5 cd5 8.Bb3 Bb4 9.Bd2 Bc5 10.Ne2 (10.Nc3 0-0 11.Na4 Bd4-+) 10...Ng4-+ 11.0-0? (better 11.d4 ed4 12.Nf4-+) 11...Qh4 12.h3 Nf2 13.Kh2 (13.Rf2 Bf2 14.Kh2-+) 13...Bh3 14.g3 Ng4 15.Kh1 Qh5 (15...Qh5 16.Rf5 Nf2 17.Rf2 Bf2-+) 0-1. Bushwacker (1920) - Manu_ (2250), ChessWorld.net, 2017.

6.Qe2 b5 7.Bb3 Bc5 =+.

4.Nc3 ab5 5.Bb5 c6 6.Bc4 d5 7.ed5 cd5 8.Bb3 d4 9.Nce2 Nbd7 10.f4 d3 11.cd3 Nc5 12.Bc2 Nd3 13.Bd3 Qd3 14.fe5 Ng4 15.Nf3 Bc5 16.Rf1 Bd7 (16...Bb4 17.a3+=) 17.Bb2 Ba4 18.Qc1 (better is 18.Qb1!? Bc2 19.Qc1–/+) 18...Bb5–/+ 19.Ng3 Ra4 (better is 19...Nh2 20.Qc5 Nf1–/+) 20.Qc3?? (20.Ng5 Qd5 21.Qc2 (21.Rf7?? Ne5 22.Qc3 Nf7 23.Nf7 Rf8-+) 21...Ne5 22.Kd1–/+) 20...Re4 21.Kd1 Ne3 22.Kc1 (22.Ke1 Nd5 23.Kd1 Nc3 24.Kc1 Ba4 25.Nd4 Qb1 26.Rb1 Na2) 22…Rc4 (22...Rc4 23.Ne1 Rc3 24.Bc3 Ba3 25.Bb2 Bb2 26.Kb2 Nc4 27.Kc1 Qd2 28.Kb1 Qb2#; 22...Nf1 23.Ne4 Qc3 24.Bc3+/– (worse is 24.dc3 Be7+=)) 0–1. Tiedemann,Joern (1995) – Kath,Jochen (2115), remoteschach.de, 2010.

4.Nc3 d5 5.ed5 Nd5 6.Nd5 (6...Qd5 7.Ne2=+) =+. beyonze1 – RogerDodge1, Live Game Caissa's Web, 2004.

5.Bb2 d6 6.Nge2 (6.Qf3 ab5 7.Bb5 c6+=) 6...ab5–/+ 7.a3 Bc5 8.d4 ed4 9.Nb5 Ne4 10.Qd3 d5 11.f3 Nf6 12.Nbd4 0-0 13.Nb3 Bb6 14.h4 Re8 15.h5 h6 16.a4 Nc6 17.Qc3 Be3 18.Qd3 Nb4 19.Qc3 Qd6 20.Rh4 d4! 21.Rd4 (21.Nbd4 Bg5 Combination) 21...Bd4 22.Nbd4 Nbd5 23.Qb3 (23.Qd2 Qg3 24.Kd1 Qf2-+) 23...Qg3 24.Kd2 Qf2 25.g4 Bg4 26.c4 Ne3 27.Bg2 Bh5 (27...Bh5 28.Bh1 c5-+) 0–1. Tiedemann,Joern (2125) – Kleinert,Stefan (2395), RSS4D basic–16, 2008.

5.Nd5 Nd5 6.ed5 d6 –/+.

5.Qf3 d6 6.Bb2 0-0 7.h3 Bd7 (7...Nbd7 8.ba6 Nc5 9.Bd3–/+) 8.a4 Qe8 9.Qe2 c6 (9...Be6 10.Nf3–/+) 10.b6 (10.Nf3 Qe7–/+) 10...c5 11.a5 (better is 11.Nd5!? Nd5 12.ed5–/+) 11...Nc6-+ 12.Nd5 (12.Nf3 Ba5 13.Nd5 Qd8-+) 12...Nd5 13.ed5 Na5 (13...Nd4!? 14.Bd4 cd4 15.Qc4-+) 14.c3 Nb3 (better is 14...Bb5 15.d3 Nb3 16.cb4 Na1 17.Ba1 cb4-+) 15.Rb1? (better is 15.cb4 Na1 16.Ba1-+) 15...Bf5-+ Black intends e4 16.d3 (16.Rd1 Ba5 17.Qc4 Bc2-+) 16...e4 (better is 16...Ba5 17.Qd1 c4-+) 17.d4 (17.cb4 ed3 18.Qe8 d2 19.Kd1 Rfe8 20.Nf3 Bb1 21.Bc4-+) 17...cd4 18.cb4 Qa4 19.Bc1 Rac8 20.Qb2 e3 21.Qb3 Rc1! 22.Ke2 Qb5 23.Kf3 Qf1 24.Rb2 Rc3 (24...Rc3 25.Kg3 Rb3-+) 0–1. ovid7 (1780) – zunsurfer (2040), gameknot.com, 2014.

4.Nd4 ab5 5.Nb5 Nf6 6.Bb2 c6 7.Bf6 Qf6 8.Nc7 Kd8 9.Na8 Bc5 10.e3 Qa1 11.Nc3 Qd1 12.Nd1? (better is 12.Kd1 d5 13.Na4+=) 12...b5-+ 13.d4 (13.Nc3 d5 14.f3-+) 13...ed3! 14.Bd3 (14.cd3 Bb4 Decoy; 14.Bd3 Bb7 Combination) 14...Bb7 15.Nc7 (15.h4 d5-+) 15...Kc7 16.0-0 Na6 17.c3 (17.Nc3 Nb4-+) 17...d5 18.g4 h5 19.g5 Be7 20.h4 Nc5 21.Bc2 Ra8 22.Bb1 Ne4 23.Be4 de4 24.c4 (24.f3 ef3 25.Rf3 f6-+) 24...b4 25.a4 (25.f3 Bc8 26.fe4 Be6-+) 25...ba3 26.Nc3 Ba6 27.Rc1 (27.Ra1 Bc4 28.Ne4 Bb4-+) 27...Bc4 28.Ne4 a2 29.Ra1 Ba3 30.Nc3 Bb2 31.Ra2 Ba2 32.Na2 Ra2 33.Kf1 c5 34.Ke2 c4 35.f4 Ba3 36.Ke1 c3 37.f5 Rh2 38.e4 c2 39.f6 c1Q 0–1. peteywheatstraw – ukip (2115), gameknot.com, 2009.

4.Nd4 ab5 5.Nc3 d5 6.Ncb5 Nf6 7.Bb2 c5 8.Nb3 Nc6 9.Bf6 gf6 10.d3 Be6 11.e3 ed3 12.cd3 c4 13.Nd2 Bb4 14.a3 Ba5 15.Rc1 cd3 16.Bd3 Ne5 17.Qe2 Rg8 18.Kf1 Nd3 19.Qd3 Rg6 20.Nb3 Bb6 21.Rg1 Qe7 22.g3 Bh3 23.Ke2 Bg4 24.f3 Bf5 25.Qd2 Bd7 26.Nc3 Ra3 27.Nd5 Be3 28.Ne7 Bd2 29.Nd2 Ke7 30.Rc7 b5 31.Ne4 Ra2 32.Ke3 Kd8 33.Rb7 Ra3 34.Kf4 Rd3 35.Ra1 Rd5 36.Raa7 Ke8 37.Nc3 Rd4 38.Ke3 Rd6 39.Ra8 Ke7 40.Nb5 Re6 41.Kd4 Re2 42.Raa7 Rd2 43.Kc3 Rd5 44.Kc4 Rgg5 45.Nc3 Rd2 46.Ne4 Rd1 47.Ng5 fg5 48.h4 gh4 49.gh4 h6 50.Ra5 Kf6 51.f4 Bc8 52.Rb6 Be6 53.Kc3 Rf1 54.Rb4 Rf3 55.Kd2 Rh3 56.f5 Rh2 57.Ke3 Rh3 58.Ke2 Bb3 59.Kd2 Rh2 60.Kc1 Rh1 61.Kb2 Bd1 62.Rd4 Rh2 63.Kc3 Rh3 64.Kd2 Bh5 65.Rc5 Rh2 66.Kc3 Rh3 67.Kb2 Rh2 68.Kb1 Bf3 69.Rb4 Bg2 70.Rb6 Kg7 71.Rc4 Bh3 72.Rf4 Rg2 73.f6 Kg6 74.Rb5 Bg4 75.Rc5 Bd1 76.Ka1 Rd2 77.Rc8 Kh7 78.Kb1 Rg2 79.Rb4 Bg4 80.Rc6 Be6 81.Rf4 Kg6 82.Re6 Kh7 83.Re7 Kg6 84.h5 Kg5 85.Rf1 Kh5 86.Rf7 Rg4 87.Rg7 Rb4 88.Kc2 Rc4 89.Kd3 Rb4 90.Rh1 Rh4 91.Rh4 Kh4 92.f7 Kh3 93.f8Q h5 94.Qf3 Kh4 95.Qh1# 1–0. Green Light Chess v2.13 – Pharaon 2.50, computer chess game, 2001.

3.a3 Ba5 4.Bb2 d6 5.c4 Nf6 6.Nc3 Nbd7 7.Nf3 0-0 8.e3 Nc5 9.Be2 e4 10.Nd4 Nd3 (better 10...Bg4! 11.0-0 Be2 12.Nce2 a6=) 11.Bd3+= ed3 12.0-0 (12.Qb1 Ng4 13.Qd3 Qh4+=) 12...Be6 (12...Bb6!?=) 13.Ne6+= fe6 14.Qb1 d5 15.Qd3 dc4 16.Qc4 Qd2 17.Qe6 Kh8 18.Qb3 Qd7 19.Rad1 Qg4 (19...Qe8 20.Nd5 Ne4 21.Qa4+/-) 20.Rd4 (20.Nd5 Nd5 21.Qd5 Rab8+-) 20...Qh5 21.Ne4 Bb6? (better 21...Ne4 22.Re4 Rae8 23.Re8 Re8+-) 22.Nf6+- Rf6 23.Rd5 Rf5 (23...Qf7 24.Bf6 Qf6+-) 24.Qc3 Rg5 25.Rfd1 Rg8 (25...Kg8 26.h4! Qh4 27.Rg5 Qg5+-) 26.Qg7!! R5g7 (26...R5g7 27.Bg7 Double attack (27.Rh5 Pinning; 27.Rh5 Deflection; 27.Rh5 Overloading); 26...R8g7 27.Rd8 Mate attack) 27.Rh5 (27.Rh5 c6 28.Rg5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.a4 Bd6 4.Bb2 Nf6 5.c4 0-0 6.d4 ed4 7.Qd4 Re8 8.c5 Be5 9.Qe5 Re5 10.Be5 d6 11.Bf6 Qf6 12.Ra2 dc5 13.Nd2 a6 14.e3 ab5 15.Rc2 Ra4 16.Ne4 Qa1 17.Ke2 c4 18.Nd2 c3 19.Nb3 Qb1 20.Kf3 Qc2 21.Nd4 0-1. TimC (2425) - nurmiBrah (2490), Rated Bullet game, lichess.org.

3.Bb2 Bc5 4.Be5+= Qh4? (better is 4...Nf6!? 5.d4 Bb6+=) 5.e3 f6 (5...Nf6 6.Nf3 Qg4 7.Bc7+-) 6.Bc7 Ne7 (6...d5 7.Nf3 Qg4 8.Be2+-) 7.d4 Bb4? (7...Nd5 8.Bb8 Bb4 9.Nd2 Rb8+-) 8.c3 Bc3 (8...Nd5 9.Nf3 Nc3+-) 9.Nc3 0-0 (9...d5 10.Bd6 Be6 11.Nf3+-) 10.Qb3 Rf7 (10...d5 11.Bd6 Kf7 12.Be7 Ke7 13.Nd5 Kd8 14.Qa3+-) 11.Bc4 d5 12.Nd5 Nd5 13.Bd5 Qh5 14.Ne2 Nd7 (14...g5 15.h4 Nd7 16.Bf7 Qf7 17.Qf7 Kf7 18.hg5 fg5 19.Rh7 Kg6 20.Rh8+-) 15.Nf4 Qd5 16.Nd5 Nb6 17.Bb6 ab6 18.Nb6 Rb8 19.Qd5 g6 20.Qd6 (20...Be6 21.Qb8 Kg7 22.Rc1 Ba2 23.d5+-) 1–0. Taulien,Hans_Juergen – Luginbuehl,Daniel, remoteschach.de, 2002.

3.Bb2 c6 4.Be5+= cb5?? (better 4...Nf6+=) 5.Bg7+- Bc5 6.Bh8 Nf6 (6...d5 7.e3 b4 8.d4+-) 7.e3 Nc6 8.Bb5 Ne5 (8...a6 9.Be2+-) 9.d4 Neg4 (9...Ng6 10.Bf6 Qf6 11.Qh5+-) 10.Be2 Nf2 (10...Ba3 11.Na3 Qa5 12.Kf1 Nf2 13.Qe1 Qa3 14.Qf2+-) 11.Kf2 Ne4 12.Kf1 Bd6 13.Nf3 Ng3 (13...Qe7+-) 14.hg3 Bg3 15.Rh7 d5 16.Ne5 Qg5 17.Bb5 Ke7 18.Qf3 Bf5 19.Rf7 (19.Qd5 Bd3 20.Bd3 Qf5 21.Bf5 Rh8 22.Rf7 Ke8 23.Qd7) 19...Ke6 (19...Kd8 20.Qd5 Kc8 21.Qb7 Kd8 22.Qc7) 20.Qd5! Kd5 21.Nc3 Kd6 22.Ne4 Ke6 (22...Be4 23.Rd7 Ke6 24.Bc4 Kf5 25.Rf7 Qf6 26.Rf6 Kg5 27.Nf7 Kh4 28.Rh6 Kg4 29.Be2 Bf3 30.gf3 Kf5 31.Bd3) 23.Bc4 1-0. DEFFM – GuestXCLV, freechess.org, 2021.

3.Bb2 f6 4.e4 Nh6 (4...d5 5.Qh5 g6 6.Qh4=) 5.Bc4 d6 (5...Nf7 6.a3 Nd6 7.Bb3+=) 6.Qh5 Ke7 7.Nf3 (7.c3 Ba5+=) 7...Bg4= 8.Qh4 Nd7 (8...a6 9.Qg3 ab5 10.Bb5=) 9.0-0 (9.Qg3 Nc5 10.Bd5 Qd7=) 9...Bf3= 10.gf3 Qe8 (10...Nb6 11.Bb3=) 11.Qh3 (11.Bd5 Rb8=) 11...Nb6=+ 12.Bb3 (12.Be2=+) 12...Qd7 (12...Qb5!? 13.Qg3 g6=+) 13.Qg2 (13.Qd7 Kd7 14.a3 Ba5=) 13...g5 (13...g6 14.a4=) 14.a4 a5 (better 14...a6!?=) 15.c3+- Bc5 16.d4 ed4 17.cd4 Bb4 18.Nc3 Raf8 (18...c6 19.Rfc1+-) 19.Rac1 Kd8 (19...c6 20.Rfd1+-) 20.Nd5 (20.Rc2 Re8+-) 20...Nd5 21.Bd5 Kc8 22.Rc2 Kb8 23.Rfc1 Rc8 24.e5 (better 24.Bc4!?+-) 24...de5= 25.f4 gf4 26.Kh1 (26.de5? Rhg8 27.Bg8 Rg8 28.Qg8 Ng8 29.Rc7 Qg4 30.Kh1 f3-+) 26...Qg4 (26...ed4 27.Bb7 Rcg8 28.Qf3+-) 27.Bb7 (27.de5 Rhd8+=) 27...Qg2+= 28.Bg2 Bd6 29.de5 (29.Rc6 Ng4 30.Kg1 Rhe8+-) 29...fe5 (29...Be5 30.Be5 fe5 31.Bh3+-) 30.Rc6 Rhf8 (better 30...Ng4!? 31.Ra6 e4 32.Bh8 Rh8+-) 31.Bd5 Ng4 32.Ra6 c5?? (32...c6 33.bc6 Rc7 34.Ra5 Bb4 35.Rb5 Ka7+-) 33.b6 (33.Rd6?! Nf2 34.Kg2 Nd3+-) 33...Nf2 (33...Rc6 34.Bc6 Kc8 35.Ra8 Bb8+-) 34.Kg2 Rc6 35.Bc6 Rg8 36.Kf2 (36.Kf2 Rg2 37.Kg2 f3 38.Kf3 e4 39.Ke2 Kc8 40.Rg1 Kd8 41.Bf6 Kc8 42.Rg8 Bf8 43.Rf8) 1–0. DEFFM – GuestJTY, freechess.org, 2020.

3.c3 Ba5 4.Qa4 b6?? (4...Bb6 5.d4 d6 6.e4=) 5.Na3?? (better is 5.Qe4 d5 6.Qe5 Ne7 7.Qg7+–) 5...d5= 6.Nf3 Nd7 7.e4 Nc5–/+ 8.Qc2 Qd6 9.g3?? Ne4 10.d3?? Nc3 11.Qd2 Nb5! 12.Nb5 Bd2 13.Nd2 Qe7 14.Ba3 c5 15.Nf3 Nf6 16.h3 a6 17.Nc3 d4 18.Na4 Bb7 19.Bg2 Qd6 20.Rb1 Nd7 21.Rg1 0-0 22.Ng5 Bg2 23.Rg2 f6 24.Ne4 Qe6 25.h4 Qa2 26.Nb6 Qb1 27.Ke2 Qb6 28.h5 h6 29.g4 Qb3 30.Bc1 Qc2 31.Bd2 a5 32.Nd6 Nb6 33.g5 fg5 34.Nb7 Nd5 35.f4 Nf4 36.Ke1 Ng2 37.Ke2 Nf4 (38.Kf1 Qd1 39.Kf2 Qd2 40.Kg3 Qg2; 37...Ne3 38.Na5 Qd1) 0–1. solidsteel – 72thst, Live Game Caissa's Web, 2005.

3.c3 Bc5 4.e3 (4.d4 ed4 5.cd4 Be7=) 4...Qf6 (4...d5 5.d4 Bd6 6.c4=) 5.Ba3 (5.d4 ed4 6.ed4 Bb6=) 5...Bb6 (5...Ba3 6.Na3 d5 7.d4=) 6.Bc4 (6.d4 d6=) 6...Ne7 (6...Qg6 7.Qb3=) 7.g3 (7.d4 d6=) 7...d5 (7...d6 8.d4=+) 8.Be7= Qe7 (8...Qe6 9.Bb3 Ke7 10.d4=+) 9.Bd5 0-0 10.Qh5 (10.Qf3 Nd7=) 10...g6 (10...Qc5 11.c4 (< 11.Qe5 Be6-+) 11...c6 12.bc6 bc6 13.Bg2=) 11.Qh6 (11.Qf3 c6 12.bc6 bc6=) 11...Kh8 (better is 11...Qc5!? 12.c4 c6=) 12.Nf3+/– e4?? (better is 12...Nd7+/–) 13.Ng5+- Rg8 (13...f5 14.Nh7! Qg7 15.Qg7 Kg7 16.Nf8 Kf8+-) 14.Qh7 1–0. manofsteel2 – Fire239, Live Game Caissa's Web, 2005.

3.e4 d6 4.Bb2 (4.c3 Ba5=) 4...Nf6=+ 5.Bd3 Bg4 (5...a6 6.Nf3–/+) 6.Nf3 Nbd7 7.0-0 Nc5 8.Be2 Nce4 9.Nh4 (9.d3 Nc5 10.c3 Ba5=+) 9...Be2 10.Qe2 0-0 11.Nf5 g6 (11...Qd7 12.Ne3–/+) 12.Nh6 Kg7 13.Ng4 Ng4?? (13...Bc5 14.Nf6 Nf6 15.Kh1–/+) 14.Qg4?? (better is 14.Qe4 Nh2 15.Kh2+-) 14...f5–/+ 15.Qf3 Nd2 16.Nd2=+ Bd2 17.Rad1 Ba5 18.Qd5?? a6 19.f4 Kh6 20.fe5= (20...ab5 21.Qb3=). juicy – 4630, Live Game Caissa's Web, 2004.

3.e4 Nf6 4.c3 Be7 5.Nf3 =+.

4.e3 Nf6 5.Nf3 a6 6.a4 0-0 7.Be2 Bg4 8.0-0 c6 9.c3 Ba5 10.d4 e4 11.Nfd2 Be2 12.Qe2 ab5 13.ab5 Nbd7 14.Nb3 Bb6 15.Ra8 Qa8 16.N1d2 Qa2 17.Rb1 Rc8 18.bc6 bc6 19.c4 d5 20.Bc3 Qa6 ½-½. Mely (2845) - horse237 (2340), ChessWorld.net, 2003.

4.e3 Nf6 5.Nf3 Bg4 6.Be2 h6 7.0-0 0-0 8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.c4 c6 12.c5 Ba5 13.Nb3 Bc7 14.Nc3 Nh7 15.a4 Qh4 16.h3 Ng5 17.Qg4 (17.Rab1 Rd8=) 17...Qg4=+ 18.hg4 Nd7 19.a5 Nf6 (19...a6 20.b6 Bb8 21.Rab1=+) 20.b6= ab6? (better 20...Bd8!?=) 21.ab6+/- Ra1 22.Ra1 (22.Na1?! Bb8 23.f3 Rd8=) 22...Bd8? (better 22...Bb8 23.Na5 Ng4 24.Nb7 f5+/-) 23.Ra7+- Ng4 24.Rb7 Bf6?! (24...f5+-) 25.Na5 Ra8 (25...Ne6 26.Nc6 Kh7+-) 26.Ra7 Ra7 (26...Rf8+-) 27.ba7 1-0. DEFFM – guestZZTopKL, freechess.org, 2021.

5.Nc3 Nf6 A) 6.Nf3 0-0 (6...e4 7.Nd4 0-0 8.Be2 Nbd7 9.0-0 d5 10.f4 ef3 11.Nf3 Nb6) 7.Be2 a6 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; B) 6.Be2 0-0 (6...a6 7.Nf3 0-0 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; 6...Bf5 7.g4 Be6 8.Bf3 c6 9.Na4 Bb4 10.g5 Nfd7 11.c3 Ba5; 6...Nbd7 7.Nf3 0-0 8.d4 ed4 9.ed4 Bb4 10.0-0 Re8 11.Bd3 Nb6; 6...d5 7.Nf3 e4 8.Nd4 0-0 9.0-0 Nbd7 10.f3 ef3 11.Nf3 Nb6; 6...Be6 7.d4 Bb4 8.de5 Nd5 9.Qd2 Nd7 10.e4 Nc3 11.Bc3 Bc3) 7.Nf3 a6 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1.

5.Bd3 Nf6 6.Nc3 d5 (6...0-0 7.Nf3 Re8 8.Be2 a6 9.0-0 e4 10.Nd4 ab5 11.Bb5 c6; 6...a6 7.Na4 Ba7 8.c4 Nbd7 9.Qc2 Qe7 10.Nh3 e4 11.Be2 0-0) 7.e4 Ne4 8.Ne4 de4 9.Be4 Bd4 10.c3 Qh4 11.cd4 Qe4.

5.d4 f6?? (better is 5...ed4 A) 6.Nf3 Bb4 (6...Ne7 7.ed4 Bb4 8.c3 Ba5 9.Bd3 a6 10.a4 0-0 11.0-0 Nd7; 6...Nf6 7.ed4 Bb6 8.Bd3 a6 9.Qe2 Qe7 10.Nc3 Qe2 11.Ke2 ab5; 6...Qe7 7.Be2 Nf6 8.ed4 Bb4 9.Nbd2 Nd5 10.0-0 0-0 11.Bc4 Be6) 7.c3 dc3 8.Nc3 Nf6 9.Be2 0-0 10.0-0 Nbd7 11.Nd5 Bc5; B) 6.Bd4 Bd4 7.Qd4 Nf6 8.Nf3 0-0 9.Nc3 a6 10.Rb1 h6 11.h3 Re8; C) 6.ed4 Bb6= (6...Bb4 7.c3 Ba5 8.Nd2 Nf6 9.Nc4 c6 10.Qa4 Bc7 11.Nf3 0-0; 6...Qe7 7.Be2 Bb6 8.Nf3 Nf6 9.0-0 0-0 10.Re1 Be6 11.Ng5 c6) 7.Nf3 Nf6 8.Bd3 Qe7 9.Be2 0-0 10.0-0 Be6 11.Nc3 d5) 6.dc5+- dc5 7.Qf3 g6 (7...c6 8.Nc3+-) 8.Nc3 h5 (8...Nd7 9.Rd1+-) 9.Rd1 Bg4 (9...Nd7+-) 10.Rd8 Kd8 11.Qb7 Nh6 12.Qa8 Ke7 13.Qa7 Rd8 14.Qc5 Ke8 15.Ba3 Rd7 16.Qf8 1–0. pierre – oppoxhi, internet, 2010.

5.Be2 A) 5...Nf6 A1) 6.Nc3 0-0 (6...a6 7.Nf3 0-0 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; 6...Bf5 7.Nf3 Nbd7 8.d4 Bb6 9.0-0 0-0 10.h3 e4 11.Nh4 Be6; 6...Nbd7 7.Nf3 0-0 8.d4 ed4 9.ed4 Bb4 10.0-0 Re8 11.Re1 Nb6) 7.Nf3 a6 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; A2) 6.d4 ed4 7.ed4 Bb4 8.c3 Ba5 9.Nf3 0-0 10.0-0 Re8 11.Nbd2 a6; A3) 6.Nh3 Bh3 (6...0-0 7.Nc3 d5 8.Na4 Bd6 9.0-0 Bh3 10.gh3 a6 11.d4 ed4; 6...Qe7 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.Nf4 g5 11.Nd3 Bg4; 6...Bf5 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.Nd2 c6 11.0-0 0-0) 7.gh3 Nbd7 8.Nc3 d5 9.d4 ed4 10.ed4 Bd6 11.0-0 0-0; A4) 6.Nf3 e4 (6...0-0 7.Nc3 a6 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; 6...a6 7.Nc3 0-0 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1) 7.Nd4 0-0 8.Nc3 Nbd7 9.0-0 d5 10.f4 ef3 11.Rf3 Ne5; B) 5...Nd7 B1) 6.d4 Bb4 (6...ed4 7.ed4 Bb6 8.Nf3 Ngf6 9.0-0 0-0 10.Nc3 Re8 11.Re1 Ba5; 6...Bb6 7.Nc3 Ngf6 8.Nf3 0-0 9.0-0 Re8 10.Bc4 ed4 11.ed4 Ba5) 7.Bc3 Bc3 8.Nc3 Ngf6 9.Nf3 0-0 10.0-0 e4 11.Nd2 Qe7; B2) 6.Nc3 Ngf6 7.Nf3 0-0 8.0-0 e4 9.Nd4 d5 10.Nb3 Be7 11.d3 Nc5; B3) 6.Nf3 Ngf6 (6...Ne7 7.Nc3 0-0 8.d4 Bb4 9.0-0 Bc3 10.Bc3 e4 11.Nd2 Nf6; 6...Bb6 7.0-0 Ngf6 8.Nc3 0-0 9.d4 Re8 10.a4 Ba5 11.h3 e4) 7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 0-0 11.0-0 Re8; C) 5...a6 C1) 6.Nc3 Nf6 (6...ab5 7.d4 ed4 8.ed4 Bb6 9.Bb5 c6 10.Bd3 Bd4 11.Qd2 Nf6) 7.Nf3 0-0 8.d4 ed4 9.ed4 Bb6 10.a4 ab5 11.ab5 Ra1; C2) 6.d4 ed4 7.ed4 Bb6 8.Nf3 Nf6 9.c4 0-0 10.Nc3 Bf5 11.0-0 ab5; C3) 6.f4 Nf6 (6...ab5 7.Nf3 Nc6 8.fe5 de5 9.Ne5 Nf6 10.0-0 0-0 11.Nc6 bc6) 7.d4 ed4 8.ed4 Bb6 9.Nf3 0-0 10.0-0 Qe7 11.Nbd2 d5; C4) 6.a4 ab5 (6...Nf6 7.d4 ed4 8.ed4 Bb6 9.Nc3 ab5 10.ab5 Ra1 11.Ba1 0-0) 7.ab5 Ra1 8.Ba1 Nf6 9.Nf3 0-0 10.d4 ed4 11.ed4 Bb6; C5) 6.Nf3 Nf6 7.d4 ed4 8.ed4 Bb6 9.c4 ab5 10.cb5 0-0 11.Nc3 Bf5.

5.Nf3 A) 5...a6 A1) 6.Nc3 Nf6 7.a4 0-0 8.Be2 ab5 9.ab5 Ra1 10.Qa1 Bf5 11.Qa8 Nc6; A2) 6.a4 ab5 (6...Nf6 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.Be2 0-0 11.0-0 Bf5; 6...Ne7 7.d4 ed4 8.ed4 Bb6 9.a5 Ba7 10.Be2 0-0 11.c4 d5; 6...Qe7 7.Be2 Nf6 8.d4 ed4 9.ed4 Bb4 10.c3 Ba5 11.0-0 0-0; 6...Nd7 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.Nbd2 Ngf6 11.Nc4 Bb6) 7.d4 ed4 8.ed4 Bb6 9.Bb5 c6 10.Bd3 Qe7 11.Qe2 Nf6; A3) 6.d4 ed4 7.ed4 Bb4 8.c3 Ba5 9.Bd3 Qe7 10.Kd2 Qf6 11.Qa4 ab5; B) 5...Nf6 B1) 6.Be2 0-0 (6...a6 7.d4 ed4 8.ed4 Bb6 9.c4 0-0 10.0-0 ab5 11.cb5 Be6; 6...e4 7.Nd4 Nbd7 8.0-0 0-0 9.Nc3 d5 10.f4 ef3 11.Nf3 Nb6; 6...Nbd7 7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 0-0 11.0-0 Re8) 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.0-0 a6 11.a4 Bf5; B2) 6.Nc3 0-0 (6...e4 7.Nd4 0-0 8.Be2 Nbd7 9.0-0 d5 10.Nb3 Bd6 11.d3 Ne5) 7.Bd3 Re8 8.e4 a6 9.a4 Be6 10.0-0 ab5 11.ab5 Ra1; B3) 6.d4 ed4 7.ed4 Bb6 8.Bc4 d5 9.Bd3 Qe7 10.Be2 a6 11.0-0 ab5.

4.Be5 0-0 5.Nf3 Ne4 6.e3 (6.c3 Bc5 7.d4 Bb6+=) 6...f6 (6...d5!?=) 7.Bc4+/- Kh8 8.Bb2 d5 9.Bb3 c5 10.c3 Ba5 11.d3 Nf2?? (better 11...Nd6+/-) 12.Kf2+- d4 (12...a6 13.Na3 ab5 14.Nb5 Nc6+-) 13.cd4 cd4 14.Nd4 Bb6 (14...Re8 15.Nc3+-) 15.Nd2 Bd4 16.Bd4 a6 (16...Nd7 17.Rf1 Ne5 18.Ne4+-) 17.a4 (17.Bc5 Re8 18.Ne4 Nd7+-) 17...ab5 (17...Nd7 18.Nc4+-) 18.ab5 Ra1 19.Qa1 b6 (19...Nd7 20.Rf1 Ne5 21.Kg1+-) 20.Qa3 Bd7 (20...Nd7+-) 21.Bb6 Qc8 (21...Qe8 22.Bc5 Rg8 23.Bg8 Kg8 24.Bd6+-) 22.Rc1 Qb7 23.Qf8 1-0. DEFFM – GuestLBLM, freechess.org, 2021.

4.Be5 d6 5.Bb2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.e3 0-0 10.Nf3 Nd5 (10...Qe7 11.Be2+/-) 11.c4+/- N5b6? (better 11...Ne7+/-) 12.Qb3+- c5 (12...Bc5 13.d4+-) 13.bc6! Bd2 (13...bc6 14.Qb4 Combination) 14.Nbd2 (14.Kd2?! bc6 15.Qc2 Nc5+-) 14...Nc5 (14...bc6 15.Nd4 Bb7 16.Nf5+-) 15.Qc3 Nba4 (15...f6 16.cb7 Bb7+-) 16.Qg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 ed4 5.Qd4 Bf6=.

4.e4 =+.

4.Nf3 e4=+ 5.Nd4 d5 6.e3 Nf6 7.Ba3 0-0 8.Be7 Qe7 9.a4 c5 10.Ne2 Bg4 11.h3 Be2 12.Be2 Nbd7 13.Bg4 Ng4-+ 14.Qg4 Ne5 15.Qe2 Nd3 16.Kd1 a6 17.f3 ab5 18.a5 b4 19.fe4 de4 20.Rf1 Qe6 (21.Kc2 Qe5-+) 0–1. cefik – pierre, ChessHere.com, 2005.

3.a4 a5 (--> 1.b4 a5 2.b5 b6 3.a4 e5).

3.a4 a6 4.Bb2 Qe7 5.c4 ab5 (5...Nf6 6.Nf3 e4 7.Nd4=) 6.cb5 (6.ab5 Ra1 7.Ba1 Nf6+=) 6...Bb7 (6...c5 7.bc6 dc6 8.d4=+) 7.h4 (7.d4 e4=) 7...Nf6 8.f3 (8.Nf3 e4 9.Nd4 c5 10.bc6 dc6=+) 8...d6 (8...d5 9.d4 Nbd7 10.de5 Ne5 11.e3–/+) 9.e4 (9.e3 Nbd7–/+) 9...Qe6 (9...d5 10.ed5 Nd5 11.Nc3–/+) 10.g4 (10.d4 ed4 11.Ne2 d5–/+) 10...h6 (10...d5 11.g5 Nh5 12.Qc2–/+) 11.Bh3 g5 (11...Qe7=+) 12.h5 (better is 12.Bf1 gh4 13.d4=) 12...Nbd7 13.Bf1 (13.Qc2 d5 14.Qc7 Rb8–/+) 13...Nc5 (13...d5 14.ed5 Bd5 15.Nc3–/+) 14.Ra3 (14.d3 d5–/+) 14...Bg7 (14...d5 15.ed5 Qd5 16.Qe2-+) 15.Qc2 (15.Ne2 Nfe4 16.fe4 Be4=+) 15...d5 16.d4 ed4 17.Bd4 0-0 18.e5 (18.Bc5!? bc5 19.a5–/+) 18...Nfd7-+ 19.Bd3 (19.Re3 Be5 20.Ne2 Qf6 (20...Na4?! 21.Bg2-+; 20...Ra4?! 21.Nbc3 Ra5 22.Qd1-+) 21.Be5 Ne5-+) 19...Ne5 20.Bf5 (20.Bh7 Kh8 21.Kf1 Nc4-+) 20...Qe7 (20...Ned3 21.Kf1 Qe1 22.Kg2 Nf4 23.Kh2 Qh4 24.Nh3 Qh3 25.Kg1 Bd4 26.Re3 Be3 27.Qf2 Qg2) 21.Bc5 (21.Re3 Ra4 (21...Na4?! 22.Nd2-+) 22.Qd1 Qd6-+) 21...bc5 (21...Qc5?! 22.Qc5 bc5 23.Nd2-+) 22.Kd1 (22.Ne2-+) 22...Nc4 23.Nh3 (23.Qe2 Qd6 24.Rb3 Rfe8-+) 23...Ne3 (better is 23...Na3!? 24.Na3 Rfe8 25.Bh7 Kh8 26.Bf5-+) 24.Re3 Qe3 25.Rf1 (25.Qf2 Qb3 26.Bc2 Qb4-+) 25...d4 (better is 25...Qd4 26.Qd2 Qa4 27.Bc2 Qb5 28.Qd3 Qd3 29.Bd3-+) 26.Be4 (26.Nd2 Rfe8 27.Bd3 Bd5-+) 26...Be4 (27.Qe4 Qb3 28.Qc2 Qb4-+) 0–1. riverborne – icewater, Caissa's Web, 2004.

3.a4 d5 4.e3 a6 5.c4 ab5 6.cb5 Nf6 7.Nc3 Bb4 8.Qb3 Bc3 9.Qc3 Be6 (9...d4 10.Qc2=+) 10.Qb4 (10.Qe5 0-0+=) 10...Qd6 (10...c5 11.bc6 Nc6 12.Bb5=) 11.Ba3 (11.Qd6!? cd6 12.d4=) 11...Qb4–/+ 12.Bb4 Nbd7 (12...d4 13.Nf3=+) 13.Nf3 e4 14.Nd4 0-0-0 (14...Ne5 15.Ne6 fe6 16.Bc3=) 15.Be2 Bg4 (15...Ne5 16.Rc1+=) 16.Bg4 Ng4 17.0-0 (17.Nc6 Rde8 18.Ne7 Kb7 19.Nd5 Nde5+=) 17...h5 (17...Nde5 18.f3 Nh6 19.Be7+=) 18.a5 ba5 19.Ra5 Nb6 (19...Nge5 20.Ra7+=) 20.Rfa1 Kd7 21.h3 (21.Nb3 Kc8+=) 21...Ne5= 22.Bc5 (22.Nb3 Nd3 23.Bc3 Nc4=+) 22...Rb8 23.Ra7 Nec4 (23...Nbc4 24.Bb4=+) 24.Nc6+= Ra8 25.Bb6 Nb6 26.Ne5 Ke6 27.Ra8 Ra8 28.Ra8 Na8 29.Nc6 Kd6 30.f4 ef3 (30...Kc5!? 31.Nd4 Nb6=+) 31.gf3= Kc5 (32.Nd4 Nb6=) =. whhodson – harkandpuke, Live Game Caissa's Web, 2004.

3.Bb2 Bc5 4.Be5+/– f6 5.Bg3 d6 (5...Bb7 6.d4 Be7 7.e3+/–) 6.e4 (6.d4 Bb4 7.c3 Ba5+-) 6...a6 (6...Qe7 7.c3 Qe4 8.Qe2+/–) 7.c3 a5?? (better is 7...ab5 8.Qb3 Qe7+/–) 8.d4+- Ba3 (8...Qe7 9.Bd3+-) 9.Na3 Nh6 10.Qh5 Nf7 11.Bc4 Qe7 12.Ne2 Be6 13.Be6 Qe6 14.Nf4 Qe4 15.Kd2 g6 16.Ng6! hg6 17.Qh8! Nh8 18.Rae1 d5? 19.f3 Qe1 20.Re1 Kf7 21.c4 Nd7 22.cd5 g5 23.Bc7 Ng6 24.d6 Nf4 25.Re7 Kg6 26.Rd7 Ng2 27.Re7 Rh8 28.d7 Rh3 29.d8Q Rf3 30.Qg8 Kf5 31.Qe6 Kg6 32.Qe4 Rf5 33.Qg2 g4 34.Qg4 Rg5 35.Qe4 f5 36.Qe6 Kh5 37.Rh7 Kg4 38.Qe2# 1–0. Tiedemann,Joern (2125) – Witt,Monika (1605), remoteschach.de, 2009.

3.Bb2 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 b6).

3.Bb2 Qg5 4.Nf3 Qh5 5.Ne5 f6 6.g4 Qg5 7.h4 Qf4 8.e3 Qb4 9.Nc4 d5?? (better is 9...Qe7 10.Qf3 c6+-) 10.Ba3 Qa4 11.Nc3 Bg4 (11...Ba3 12.Na4 dc4+-) 12.Qg4 (12.Na4?! Bd1 13.Rd1 dc4 14.Bf8 Kf8+-) 12...Qc2 13.Qc8 (13...Kf7 14.Qf8 Kg6 15.Rg1 Kh5 16.Be2 Kh4 17.Rh1 Kg5 18.Qg7 Qg6 19.Rh5#) 1–0. miehnekort – c_la_torre, Yahoo, 2005.

3.c3 d5 (3...a6 4.d4=+) 4.Nf3 (4.d4 e4=+) 4...e4 5.Ne5 (5.Nd4 a6=+) 5...Nd7 (better is 5...f6!? 6.Nc6 Nc6 7.bc6 Qd6–/+) 6.Nc6= Qf6 (6...Qh4 7.d3=) 7.Qb3 Qd6 8.c4 Nc5 9.Qg3 (9.Qc2!?=) 9...Qg3–/+ 10.hg3 dc4 11.Rh5 (11.Nc3 a6–/+) 11...Nf6 12.Re5 Be6 13.d4 (13.Bb2 h6-+) 13...cd3 14.e3?? (14.ed3 ed3 15.Nc3-+) 14...Ng4 (better is 14...Bd6 15.Bb2 Be5 16.Be5-+) 15.Nd2 Nf6 16.f3?? Bd6 17.fe4 Be5 18.Ne5 Rd8 19.Nc6 Nce4 20.Nd8–/+ Kd8 21.Bd3 Ng3 22.Nc4 Ke7 23.Ba3–/+ Kd7 24.Ne5 Ke8 25.Rc1=+ Nd5 26.Nc6?? Kd7 27.Nb8?? Kc8 28.Na6 Rd8 29.Bh7?? g6-+ 30.Nb4 Nb4 31.Bb4 Nf5 32.Rc2 Ne3 33.Re2 Nf5 34.Re6 fe6 35.Bg6 Rg8 36.Bf7 Rg5?? 37.Be6?? Kb8–/+ 38.Be7?? Ne7-+ 39.Kf1 Rb5 40.a4 Ra5 41.Bb3 b5 42.ab5 Rb5 43.Bc4 Rc5 44.Be2 a5 45.g3 a4 46.Kf2 a3 47.Kf3 a2 48.g4 a1Q 49.Kg3 Ng6 50.Bd3 Qc3 51.g5 Qd3 52.Kf2 Rc2 53.Ke1 Qb3 54.Kd1 Qb1# 0–1. Jolilein – Falcor, mySchach.de, 2005.

3.Nc3 c6 4.Nf3 Qe7 5.d4 (5.e4=) 5...d6 (better is 5...e4!? 6.Nd2 Nf6=+) 6.bc6+/– Nc6 7.d5 Na5 8.e4 h6 9.Be3 Nf6 10.Bd3 Bd7 11.Nb5 Bc8 12.c4 Nb7? (better is 12...Qd8+=) 13.Qa4+- Qd7? (better is 13...Bd7 14.Bb6! Bb5 15.cb5 Nd7+-) 14.Nc7 Ke7 15.Qd7 Bd7 16.Na8 Kd8 17.0-0 Kc8 18.Rab1 Nc5 19.Bc5 dc5 20.Ne5 Kb7 21.Nf7 Rg8 22.e5 Ne8 23.Bh7 Bf5 24.Bf5 g6 25.Be4 Ka8 26.d6 Kb8 27.d7 Be7 28.Nh6 Rf8 29.de8R Re8 30.Bg6 Rf8 31.Nf5 Bd8 32.e6 Rf6 33.Rfd1 Rg6 34.Rd8 Kc7 35.Rd7 Kc8 36.Ne7 (36...Kb8 37.Ng6 Kc8 38.f3 Kb8 39.e7 Kc8 40.e8Q#) 1–0. deepaktnj – astrop, internet, 2007.

3.Nc3 Nf6 4.e3 (4.e4 a6=) 4...Bb7 (4...d5 5.f4 ef4 6.ef4=+) 5.Nf3= e4 (5...Bd6 6.Bc4=) 6.Nd4 d5 (6...a6 7.Bb2=) 7.a4 (7.Bb2 a6=) 7...Bb4 8.Bb2 (8.Ba3 Bc3 9.dc3 Qd7=) 8...Ba5 (8...0-0 9.Be2=) 9.Nce2 (9.Na2 a6=) 9...c6 (9...a6 10.Nb3=) 10.Nf5 (10.Ba3 c5 11.Nb3 Bb4+=) 10...0-0 11.Nf4 Bc8 (11...Nbd7 12.Nd6 Qc7 13.Nb7 Qb7 14.Be2=) 12.Ng3 (12.Ng7!? a6 13.Ngh5+/–) 12...Bb4 (12...Bg4 13.Be2 Bd7 14.0-0=) 13.Nfh5 (13.bc6 Nc6 14.Bf6 gf6+=) 13...Be7 (13...Nh5 14.Qh5 a6 15.Nf5=+) 14.Nf6 (14.a5 cb5 15.Bb5 a6 16.Nf6 Bf6 17.Bf6 Qf6=) 14...Bf6=+ 15.Bf6 Qf6 (< 15...gf6 16.d3 Qe7 17.de4 de4 18.Qd4+=) 16.c3 (16.a5 Bg4 17.Qb1 cb5 18.ab6 Qb6 19.Bb5 Rc8=+) 16...Qg6 (16...a6 17.bc6 Qc6 18.Qh5=+) 17.Qh5 (17.d3 Bg4 18.Qc2 Re8=) 17...Qd6 (17...Qh5 18.Nh5 a6 19.bc6 Nc6 20.d3=) 18.Be2 a6 (18...f5 19.a5 f4 20.ef4 Qf4 21.Rf1=) 19.0-0 a5 (19...f5 20.ba6 f4 21.ef4 Na6 22.Rab1=) 20.Nf5 (20.f3 Qe6+=) 20...Bf5 21.Qf5 g6 22.Qf4 (22.Qh3!?+=) 22...Qf4=+ 23.ef4 c5 24.d3 f5 25.g3 Nd7=+ 26.de4 fe4 27.Bg4 Nf6–/+ 28.Bh3 Rad8 29.Rfd1 d4 30.cd4=+ Rd4 31.Rd4 cd4 32.Kf1 d3 33.Ke1 Re8 34.Kd2 Nd5 35.Rc1 Nb4 36.f5 Nc2= 37.fg6 hg6 38.Bd7 Re7 39.Bc6=+ Nd4 40.Bd5 Kg7=+ 41.h4 Re5 42.Bc4 Nc2 43.Rc2 dc2–/+ 44.Kc2 Rf5 45.Kd2 Rf2-+ 46.Ke3 Rf3 47.Ke4 Ra3 48.Kd5 Ra4 49.Be2 Ra2 50.Bf1 Rc2 51.g4?! a4 52.h5 a3 53.hg6 Rc5 54.Ke6 a2 (55.Kd6 a1Q 56.Bc4 Qe5 57.Kd7 Rc7 58.Kd8 Qe7#) 0–1. cefik (1625) – Zuzu (1605), internet, 2005.

3.c4 Bb7 4.Nc3 Nf6 5.d4 (5.Nf3 e4 6.Nd4 a6+=) 5...e4 6.d5 (6.Nh3!?=) 6...Bb4 7.Bb2 (7.Bd2 a6–/+) 7...Qe7 (7...a6 8.Qb3 Qe7 9.e3 ab5 10.a3-+) 8.e3 c6 (8...a6 9.a3 Ba5 10.a4–/+) 9.Qd4 (9.a3 Bc3 10.Bc3 cd5 11.cd5 d6+= (worse is 11...Bd5 12.Ne2 Bb7 13.Rc1 Qa3 14.Bf6 gf6 15.Qd4+=)) 9...cd5 (9...cb5 10.cb5 0-0 11.a3–/+) 10.cd5 (better is 10.Nh3+=) 10...Bc3 (10...0-0!?–/+) 11.Qc3 (better is 11.Bc3 d6 12.Ne2=) 11...Bd5?? (11...d6 12.Ne2 Nbd7 13.Ng3=) 12.0-0-0?? (better is 12.Rd1 Qd8 13.Rd5 Nd5 14.Qg7+/–) 12...Ba2= 13.Qc8 (better is 13.Ba3!? Qd8 14.Nh3=) 13...Qd8–/+ 14.Qb7 (14.Qd8 Kd8 15.Nh3 a6–/+) 14...0-0 15.Qa8 Qc7 (15...Qc7 16.Kd2 Bd5–/+) 0–1. psychobishop (1840) – ortos, gameknot.com, 2012.

3.d3 Bb7 4.e4 Bc5 5.c4?? (5.Nf3 Qe7=) 5...c6 (better is 5...Bd4 6.Bg5 Qg5-+) 6.a4 a6 7.Qb3 (7.Nf3 ab5 8.cb5 Bb4 9.Bd2 Qe7=) 7...Qf6 (7...ab5 8.cb5 Bd4 9.Bb2=+) 8.Nf3= h6 9.Ba3 cb5 10.ab5 ab5 11.cb5 Qd6 (11...Ne7 12.d4 ed4 13.Bd3=+) 12.Be2 Ba3 13.Na3 f5 14.0-0 fe4 15.Nc4 Qd5? (15...Qe6 16.Ra8 Ba8 17.Nfe5+=) 16.Nfe5 (16.de4 Qc5 17.Nce5 Ra1 18.Qf7 Kd8 19.Ra1 Nf6 20.Qg7 Rf8+-) 16...ed3 (16...Ra1!? 17.Bh5 Kd8 18.Nf7 Kc7 19.Ra1 e3+-) 17.Bd3?? (17.Bf3 Qd4 18.Rae1+-) 17...Qg2 0–1. Buresch,Rene – Ritschel,Stephan, remoteschach.de, 2002.

3.d4 ed4 4.Qd4 Ne7=.

3.d4 e4 4.d5 (4.Bf4 a6=+) 4...d6 (4...Qf6!? 5.c3 a6=+) 5.Qd4 Qe7 (5...f5 6.Nc3=) 6.c4 (6.Nc3 Bf5=) 6...Nf6 (6...a6 7.Nc3 Nf6 8.Bg5=) 7.Bg5 (7.Nc3 a6=) 7...h6 (7...Nbd7 8.Nc3=) 8.Bf6 gf6 (8...Qf6 9.Qf6 (9.Qe4?? Be7-+) 9...gf6 10.Nc3=) 9.e3 (9.Nd2 Bg7 10.Ne4 Qe5 11.Qe5 fe5+/–) 9...Nd7+= 10.Nc3 Nc5 11.Be2 (11.f3 ef3 12.Nf3 Rg8=) 11...h5 (11...Rg8 12.f3 Rg2 13.Ne4 Bg7=) 12.f3+= ef3 (12...Rg8 13.Ne4 Bg7 14.Qd1=+) 13.Nf3 Bf5 (13...Rg8 14.0-0+/–) 14.0-0 (14.Nh4 Bd7+/–) 14...a6 (14...Bh6 15.e4+=) 15.Nh4+/– Bg4 (15...Bh7 A) 16.Qf6 Qf6 17.Rf6 Bg7–/+; B) 16.Rf6? Bg7 17.Raf1 Nd7 18.Rf7 Qf7 (18...Bd4?! 19.Re7 Ke7 20.ed4+=) 19.Rf7 Bd4 20.Bh5 Be3 (20...Bc3?! 21.Rh7 Kd8 22.Rh8 Bh8 23.a4-+) 21.Kh1 Kd8-+; C) 16.Nf5 Bf5 17.Rf5 ab5 18.cb5=+) 16.Bg4 (16.Qf6 Qf6 17.Rf6 Bg7-+; 16.Rf6? Bg7 17.Raf1 ab5-+ (17...Bf6?! 18.Rf6 Be2 19.Ne2=+)) 16...hg4 17.g3 (17.Nf5 Qe5 18.Rf4 Rh5+/–) 17...Bh6 18.Nf5 Qe5 19.Ne2 (19.Nh6 Rh6 20.Qg4 Rg6+=) 19...Ne4 (19...ab5 20.cb5 Ra4 21.Qe5 fe5 22.Nc3=) 20.Nh6+= Rh6 21.Rf4 f5 22.Raf1 (22.Qe5 de5 23.Rf5 f6=) 22...Qd4 (22...ab5 23.Rf5 Qd4 24.Nd4 Ra2 (< 24...bc4 25.Rf7 0-0-0 26.Rg7+/–) 25.Rf7 Ng5 26.Rf8 Kd7+-) 23.Nd4+= ab5? (better is 23...Nd2 24.Nf5 Rh8+/–) 24.Nf5+- Rg6 25.Re4 Kf8 26.cb5 Ra2 27.Re7 Rc2 28.Rf7! Kf7 29.Nd4 Ke7 30.Nc2 Rf6 31.Rf4 Rf4 32.ef4 Kf6 33.Ne3 Kg6 34.Ng4 Kf5 35.Ne3 Ke4 36.Kf2 Kd4 37.f5 Kc5 38.f6 Kb5 39.f7 c5 40.dc6! Kc6 41.f8Q b5 42.Qc8 Kb6 43.Nd5 Ka5 44.Qa8 1–0. nay (2190) – valerypavlovich (2120), net–chess.com, 2006.

3.e3 d5 (--> 1.b4 e5 2.b5 d5 3.e3 b6).

3.e3 e4 4.c4 (4.Bb2 Nf6=) 4...Qf6 (4...a6 5.Bb2=+) 5.Nc3 (5.Qc2 Bb7 (< 5...Qa1 6.Bb2 Qa2 7.Nc3 Qb2 8.Qb2+/–) 6.Bb2 Qe7=) 5...Qe7 (5...Bb7 6.Bb2=) 6.Bb2 (6.Nd5 Qd6 7.Qc2 Bb7 8.Qe4 Ne7 9.Nf6 Qf6 10.Qb7 Qa1+-) 6...Bb7 (6...Nf6 7.d3 Bb7 8.a3=) 7.Rb1 (7.Nd5 Bd5 8.cd5 Nf6+=) 7...f5 (7...Nf6 8.d4=) 8.Be2 (8.Nge2 a6=) 8...Qd8 (8...Qg5 9.g3=) 9.d3 (9.Nh3 Nf6+=) 9...Nf6 10.de4 (better is 10.Nh3=) 10...Ne4? (10...Bb4 11.a3 Ba5 12.Nf3 fe4 13.Nd4=) 11.Bf3 (better is 11.Bh5 g6 12.Ne4 Be4 13.Bh8 Bb1 14.Qb1 gh5 15.Nf3+-) 11...Bb4 12.Nge2 g5? (better is 12...0-0+=) 13.0-0+- Bc3 14.Nc3 Rg8 15.Ne4 g4?? 16.Nf6 Kf8 17.Bb7 Rg6 18.Nh7 Kg8 19.Nf6! Kf8 20.Ba8 (better is 20.Qd4!? Qf6 21.Qf6 Rf6 22.Bf6 Kf7+-). Strand – Simicic,S, Gnosjoe Sweden, 1988.

3.e3 g5 4.Nf3 (4.Bb2 Bg7+/–) 4...Nf6 (4...d6!?+=) 5.Ne5+/– Bd6 (5...a6 6.Bb2 Bg7 7.ba6 Ba6 8.Qf3+/–) 6.Nc4 (6.Qf3 Be5 7.d4 d5 8.de5 Ne4+-) 6...Be7 7.Qf3 a5?? (better is 7...d5 8.Ne5 a6+/–) 8.Qa8+- Na6 9.ba6 h5 10.a7 Nd5 11.Qb8 Rh6 12.a8Q Ba6 13.Qd5 Qb8 14.Ne5 Bb7 15.Qf7 Kd8 16.Qg8 Bf8 17.Qf8# 1–0. solidsteel – tshediso, Live Game Caissa's Web, 2005.

3.e4 Bc5 4.Nc3 d6 5.a4 (5.Na4 Bd4 6.c3 Bc5+=) 5...Qf6 6.Nf3 Bg4 (6...Ne7 7.a5=) 7.Be2 Qg6 (7...Ne7 8.a5+=) 8.h3 (8.Ne5!? de5 9.Bg4+/–) 8...Bf3 (8...Be6 9.Nh4 Qf6 10.Nf3=) 9.Bf3+= (< 9.gf3 Qg2 10.Rf1 Qh3=) 9...Nf6 10.g4 (10.h4 0-0=) 10...c6= 11.h4 d5?? (better is 11...Bd4!?=) 12.ed5 (12.h5 Qg5 13.d4 Bd4 14.Bg5 Bc3 15.Ke2 Ba1 16.Qa1 d4+-) 12...cd5? (better is 12...Nd5 13.Nd5 cd5 14.Bd5 Qf6+/–) 13.Nd5 Nd5 14.Bd5 Qf6 15.Qe2 0-0 16.Ba8 Nd7 17.Bc6 Rd8 18.g5 Qf5 (19.d3 Bb4 20.Kd1 Bc3+-). vulpo – xzara, ChessWorld.net, 2005.

3.e4 d5 4.ed5 Qd5 5.Nc3 Qd8 (5...Qe6 6.Qf3 c6 7.Nge2=) 6.Bc4 (better is 6.Qf3 c6 7.bc6+/–) 6...Nd7?? (better is 6...c6+=) 7.Bf7! Kf7 8.Qf3 Ke8 9.Qa8 a6 10.Nf3 ab5 11.0-0 Be7 12.Nb5 Bf6 13.d4 e4 14.Qe4 Qe7 15.Nc7 Kd8 16.Ne6 Ke8 17.Re1 Nb8 18.Ba3 Qa3 19.Nc7 Kf7 20.Qe8# 1–0. dale3 – CaptainCheckmate, Live Game Caissa's Web, 2005.

3.g3 Bb7 4.Nf3 Bf3 (4...a6!?=+) 5.ef3= f6 6.c4 (6.d4 ed4 7.Qd4 a6=) 6...d5 (6...a6 7.f4 ab5 8.fe5 bc4 9.Bc4=) 7.cd5 Qd5 8.Bb2 Bb4 9.Be2 a5 (9...c6 10.Nc3 Bc3 11.dc3=) 10.ba6 (better is 10.a3 Bc5 11.Nc3+=) 10...Na6 (better is 10...Ne7=) 11.f4?? (better is 11.Qa4 c6 12.Ba6 Qf3 13.0-0+- (13.Qb4?! Qh1 14.Bf1 b5+/–)) 11...ef4 (better is 11...Qh1 12.Bf1 ef4-+) 12.Nc3?? (12.0-0 fg3 13.Ba6 gh2 14.Kh2+=) 12...Qh1-+ (13.Bf1 Kf8-+) 0–1. Tarvo (2350) – Schackgalen (1675), ICC, 2003.

4.a4 e4 5.e3 a5 (5...Nf6 6.a5=+) 6.f3 (6.d3 Bb7+=) 6...d5 7.c4 White gets the initiative 7...ef3 8.Nf3 Bg4 9.cd5 Bf3 (better 9...Qd5!? 10.Be2 c5+/-) 10.Qf3+- (10.gf3?! Qh4 11.Ke2 Qc4 12.Kf2 Qd5+/-) 10...Nh6 (10...Nd7 11.Bd3+-) 11.d6 Nd7?? (better 11...Ra7 12.Qe4 Kd7 13.dc7 Rc7+-) 12.Qe4 Be7 13.de7 Qe7 (13...Qc8 14.Bg7 Rg8 15.Bh6 Nf6+-) 14.Qa8 Qd8 15.Qd8 Kd8 16.Bg7 (16.Bg7 Rg8 17.Bh6+-) 1-0. GuestLYRF – GuestSJTH, freechess.org, 2020.

4.c4 a5 5.a4 (5.Be5 Nf6+/–) 5...Bc5 (5...d6 6.e3=) 6.Be5+= f6 (6...Nf6 7.e3 Bb7 8.Nf3+/–) 7.Bb2 d6 8.e3 Nh6 9.Qf3 Nd7?? (better is 9...Ra7+/–) 10.Qa8+- 0-0 11.Nf3 Ng4 12.Nc3 Qe8 13.Qd5 Kh8 14.Be2 Bb4 15.Bd3 Nde5 16.Ne5 Ne5 17.Bc2 Ng4 18.0-0 Be6 19.Qd3 Qh5 20.Nd5 Qh2# 0–1. Neffgen,Dieter (1740) – Witt,Monika, remoteschach.de, 2005.

4.c4 d6 5.d4=.

4.Be5 d6 5.Bd4=.

(...) (--> 1.b4 b6 2.Bb2 Bb7 3.b5 e5).

4.e3 d6 5.Nf3 (---> 1.b4 e5 2.Bb2 d6 3.b5 b6 4.e3 Bb7 5.Nf3).

4.a4 a6 5.c4 (5.Be5 d6 6.Bd4 c5+=) 5...a5 (5...f6 6.e4=) 6.e3 (6.Be5 Nf6+/–) 6...Nf6 (6...f6!?=) 7.Be5+/– d6 8.Bb2 Nbd7 (8...Be7 9.Nf3+/–) 9.Nf3 Be7 (9...cb5!? 10.ab5 Be7+/–) 10.bc6+- Nc5 11.d4 Nce4 12.Nc3 White plans d5 12...0-0 13.Bd3 Bf5 (13...Nc3 14.Bc3 d5 15.cd5 Nd5 16.Bd2+-) 14.0-0 Rc8? (14...Nc3 15.Bc3 Ne4 16.Qc2+-) 15.d5 (15.Qc2 d5 16.cd5 Nc3 17.Bf5 Ncd5 18.Bc8 Qc8+-) 15...g6 (15...Bg6 16.Rb1 Nc5 17.Bg6 fg6 18.Nd4+-) 16.Nh4 (better is 16.Ne4!? Be4 17.Bf6 Bf6 18.Be4 Ba1 19.Qa1 Re8+-) 16...Bg4 17.f3 g5 (17...Nc3 18.Bc3 Ne8 19.fg4 Bh4+-) 18.fg4 gh4 (18...Nc5 19.Bf5 Ra8 20.Nb5+-) 19.Ne4 Ng4 (19...Ne8+-) 20.Qg4 1–0. pumpkin (2455) – pkjos (1965), net–chess.com, 2013.

4.a4 cb5 5.ab5 Bd6 6.e3 Bb7 7.f4 (7.Nf3 Qc7+=) 7...Qh4 8.g3 Qf6 (better 8...Qh6!? 9.Nf3 ef4 10.gf4 Nf6+=) 9.Nf3+/- Bf3?? (better 9...Bc7+/-) 10.Qf3+- ef4 (10...Nc6 11.bc6 Nh6 12.cd7 Ke7+-) 11.Bf6 (11.Qa8?! Qb2 12.Qa7 fe3 13.de3 Qc2+=) 11...Nf6 12.Qa8 0-0 13.Qa7 fe3 14.Qb6 ed2 15.Nd2 Bb4 16.Ra8 Re8 17.Be2 Bd2 18.Kd2 Ne4 19.Kc1 Nc3 20.Qb8 Ne2 (20...g5 21.Qe8 Kg7 22.Qe5 f6 23.Qe7 Kg6 24.Rg8 Kf5 25.Rf1) 21.Kd2 (21.Kd2 g5 22.Qe8 Kg7 23.Qh8 Kg6 24.g4 f5 25.Rf8 fg4 26.Rf6 Kh5 27.Qh7) 1-0. DEFFM – GuestXZBP, freechess.org, 2021.

4.a4 d6 5.d4=.

(--> 1.b4 e5 2.Bb2 d6 3.b5 b6).

4.e3 Bb7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.b5 b6 4.c4 Bb7 5.e3).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 b6).

4.d4 a6 (better is 4...e4!?=) 5.de5+= Bb4 6.c3 Ba5 7.a4 ab5 8.ab5 c5 (8...Bb7!?+/–) 9.e4 Bb7 10.Nd2 f6? (better is 10...Ne7!?+/–) 11.Nc4+- Bc3 12.Bc3 Ra1 13.Nd6 Ke7 14.Qa1 Be4 15.Ne4 fe5 16.Be5 d6 17.Bg7 Kf7 18.Bh8 Qe8 19.Qg7 Ke6 20.Bc4 Kf5 21.Qg5 Ke4 22.f3# (22.Qg4#) 1–0. Pierred (2200) – Guest242525, Friendly Game, 3m + 0s, 2005.

4.e4 Bb7 (4...Nf6 5.Nf3=) 5.Qg4 (5.d4 ed4 6.Bd4 Nf6= (< 6...Be4 7.Bg7 Qe7 8.Qe2+/–)) 5...g6 (5...Nf6 6.Qg3=) 6.Nf3 (6.d3 a6 7.Nf3 Qe7=) 6...Nf6 7.Qg5 (7.Qh3 Be4 8.Ne5 Qe7=+ (< 8...Bc2 9.Ng4 Qe7 10.Be2 Ng4 11.Bh8+/–)) 7...Qe7 (7...Ne4 8.Qd8 Kd8 9.d3=+) 8.Be5 (8.Bd3 h6 9.Qe3 a6=) 8...Be5=+ 9.Ne5? (9.Qe5 Be4 10.Qe7 Ke7=+) 9...Be4?? (9...h6!? 10.Ng6 Qe4 11.Qe3 fg6 12.Bd3 Qe3 13.de3-+) 10.Bc4? (10.d3 Bf5 11.Qe3 a6=+) 10...d5 (better is 10...d6 11.Bf7 Kd8-+) 11.f3? dc4?? 12.fe4=+ 0-0 13.Rf1 Ne4?? 14.Qf4 Nd6 15.Nc3?? Nd7 16.Nd5 Qe5 17.Qe5 Ne5 18.Nf6 Kg7 19.Nd5 Nb5 20.0-0-0 Rad8 21.Ne7 Rfe8 22.Nf5 Kf8 23.Nh6 c5 24.h4 a5 25.h5 Rd4 26.hg6 hg6 27.Rf6 Rb8 28.Re1 Rd5 29.Nf7 Nf7 30.Rg6 Re5 31.Re3 Re3 32.de3 Nc3 33.Rc6 Na2 34.Kb2 Nb4 35.Re6 Ng5 36.Rf6 Ke7 37.Rf5 Ne4 38.g4 a4 39.Re5 Kf6 40.Re4 Ra8 41.Rf4 Kg5 42.Rc4 a3 43.Ka1 a2 44.e4 Ra3 45.e5 Re3 46.c3 Re1 47.Kb2 a1Q (48.Kb3 Qa2#) 0–1. manofsteel5 – moi, Live Game Caissa's Web, 2005.

4.Nf3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Qe7 8.e3 Bb7 9.Bc4 Qf6 10.d4 Bf3 (10...Bb4 11.c3 Bd6 12.de5 Be5 13.Bd5+=) 11.Qf3+= Qf3 12.gf3 ed4 13.Bd4 Nf6 (13...f6 14.Rg1 Kf8 15.f4+/-) 14.Rg1 Bh2 (14...Kf8!? 15.Bf6 gf6+/-) 15.Rg7+- Nh5?? (better 15...d5 16.Bf6 Nd7+-) 16.Bf7 Ke7 (16...Kd8 17.Bh5 Bd6 18.Rf7+-) 17.Bh5 (17.Bh5 Ke6 18.f4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nf3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 f6 8.e4 Bb4 (8...Bb7 9.Nc3+=) 9.Bc4 d6 10.Nh4 (10.c3 Ba5+/-) 10...Ne7+= 11.Qh5 g6 12.Qf3 Nec6? (better 12...Bc5+=) 13.bc6+- Nc6 14.0-0 (14.c3 Bc5 15.d4 ed4+-) 14...Bc5 15.Nc3 h5?? (15...Nd4 16.Qg3 Rf8+-) 16.Nd5 Bg4 (16...f5 17.Ng6 Rh6+-) 17.Nf6 Ke7 18.Ng6 1-0. GuestJYSS – haniAf, freechess.org, 2020.

4.Nf3 a6 5.Ne5 Be5 6.Be5 f6 7.Bb2 ab5 8.e3 c5 (8...c6!?+/–) 9.Bb5+- Bb7 10.0-0 Ne7 11.d3 Bd5 12.e4 Be6 13.d4 0-0 14.d5 Bf7 15.Qg4 Ng6 16.f4 d6 17.f5 Ne5 18.Qh4 g5 (better is 18...Qe7!?+/–) 19.fg6+- Ng6? (19...Bg6 20.Qg3 Na6+-) 20.Bf6 (better is 20.Qf6 Qf6 21.Rf6+- (21.Bf6?! Be8 22.Nc3 Nd7+-)) 20...Qc8?? (better is 20...Nh4 21.Bd8 Rd8=+) 21.Qh6 (21...Bd5 22.Qg7) 1–0. GorillaTest – turkishdelight, Live Game Caissa's Web, 2004.

4.Nf3 Bb7 5.Ne5 Be5 6.Be5 f6 7.Bb2 c6 8.e4 c5 (better 8...cb5!? 9.Bb5 Be4+/-) 9.Nc3+- Ne7 10.Bc4 a6 11.Qh5 g6 12.Qh4 ab5? (12...Rf8+-) 13.Nb5 (13.Qf6 Rf8 14.Qe5 bc4+/-; 13.Bb5?! 0-0+-) 13...Bc6 (13...d5 14.Qf6 Rf8+-) 14.Nd6 Kf8 15.Qf6 1-0. GuestKPPC – GuestRZGH, freechess.org, 2021.

4.Nf3 Bb7 5.Ne5 Be5 6.Be5 f6 7.Bb2 Ne7 8.e3 0-0 9.Bd3 (9.Bc4 d5 10.Bd3 Qe8+/-) 9...Bg2 10.Rg1 Bb7 11.Qh5 g6 12.Qh4 d6? (better 12...Kg7+/-) 13.Bf6+- Nd7 (13...Rf6 14.Qf6 Nd7 15.Bc4 d5 16.Qe6 Kf8+-) 14.Be7 Qe8 15.Bf8 Qf8 (15...Nf8 16.Nc3 c5+-) 16.Bg6! hg6 (16...hg6 17.Qg4 Double attack (17.Qg4 Decoy)) 17.Rg6 Kf7 18.Qh7 Ke8 19.Rg8 Nf6 (19...Rc8 20.Rf8 Nf8 21.Qh5 Ke7 22.Nc3+-) 20.Rf8 Kf8 21.Qc7 Bf3 22.Qd6 (22.Qd6 Kf7 23.Qf4+-) 1-0. DEFFM – GuestWRTH, freechess.org, 2021.

4.Nf3 Qe7 5.a4 a6+=.

4.Nf3 Qe7 5.e3 Nf6 6.Bc4 0-0 7.0-0 Bb7 8.d4 ed4 9.ed4 (worse 9.Nd4 Qe5 10.g3 Qe4-/+) 9...Bf3 (9...a6!?=) 10.Qf3+= (worse 10.gf3 Nd5 11.f4 Nf4-/+) 10...Qe4?? (better 10...c6+=) 11.Qe4+- Ne4 12.Bd5 c6 13.Be4 a6 14.a4 ab5 15.ab5 Ra1 16.Ba1 cb5 17.Nc3 Nc6 (17...b4 18.Nb5 Bf4 19.Re1+-) 18.Nb5 Bb4 19.c3 Be7 20.Bf5 (20.Re1 Bg5+-) 20...Na5 (20...d5 21.Nc7 Rd8 22.Rb1+-) 21.Bd7 Nc4 22.Bc6 Rc8 23.Bd5 Nd6 (23...Kf8 24.Re1+-) 24.Rb1 Nb5 25.Rb5 Rb8 26.g3 g6 27.c4 Bd6 28.c5 bc5 29.Rb8 Bb8 30.dc5 Kf8 31.Bf6 Ke8 32.Bc6 Kf8 33.Bb5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Nf3 Qe7 5.e4 Nf6= 6.Bd3 (6.Nh4 Ne4 7.Nf5 Qf6+=) 6...a6 7.a4 ab5 8.ab5 0-0?? (better is 8...Ra1 9.Ba1 Bb7=) 9.Ra8+- c5 10.Nh4 Bc7 11.Nf5 Qe6 12.0-0 Bb7 13.Ra7 g6 14.Rb7 Rc8 15.Ne3 d6 16.Bc4 Qd7 17.Nc3 h5 18.Qf3 Qe7 19.Qg3 Kf8 20.Qh3 Nbd7 21.Ra1 Kg7 22.Raa7 Nf8 23.Qc8 Ng4 24.Ng4 hg4 25.Rc7 (25...Qd7 26.Rd7 d5 27.Rf7 Kh6 28.Qg4 g5 29.Rf6 Ng6 30.Qh3#) 1–0. tschulz – icke, MySchachOpen, 2005.

4.Nf3 f6 5.e3 (5.e4 Bb7=) 5...a6 6.Nh4 (6.Nc3 Bb7=) 6...g6 (6...Nh6 7.Nc3=) 7.Nc3 Bb7 (7...c6 8.ba6 Bb4 9.a3 Bc3 10.Bc3 Ba6 11.d3=) 8.Bc4 (8.Be2 ab5 9.Nb5 Be7=) 8...Ne7 (8...ab5 9.Bb5 Bb4 10.0-0=) 9.0-0 c6 (9...Bb4 10.f4 d5 11.Bb3=) 10.Qf3 (better is 10.Ne4 Nc8 11.ba6 Ba6 12.Ba6 Ra6 13.d4+=) 10...ab5?? (better is 10...Nc8 11.Qh3 Rf8 12.bc6 Bc6+=) 11.Ne4+- (11.Qf6?! Rf8 12.Qd6 bc4+-) 11...bc4 (11...Nc8 12.Nf6 Qf6 13.Qf6 Rf8+-) 12.Nd6 Kf8 13.Qf6 Kg8 14.Qf7# 1–0. Wall,Bill – ComicalKid, internet, 2004.

4.Nf3 Nf6 5.Ne5+= 0-0 6.e3 Be5 7.Be5 Bb7 8.c4 d6 9.Bb2 Nbd7 10.d4 a6 11.Nc3 ab5 12.cb5 Qe7 (12...Nd5 13.Qf3 N7f6 14.Bd3+/–) 13.Qb3 (13.d5 Ne4+/–) 13...Ng4 14.Be2 Qh4 (14...Bg2? 15.Rg1 Ne3 16.fe3 Qh4 17.Kd2 Qh2 18.Qc4+-) 15.g3 Qh3 16.Bg4 Qg4 17.0-0 Rfe8 18.Rac1 Nf6 19.d5 Qh3 20.f3 Re3 21.Qc4 Rae8 22.Rcd1 R8e7 23.a4 h5 (better is 23...Qf5–/+) 24.Qc7?? (better is 24.Qd4+=) 24...Rc7-+ 25.Rd4 Rcc3 26.Bc3 Rc3 27.Rh4 Qc8 28.Rf2 Rc1 29.Kg2 Ng4! (29...Ng4 30.Re2 Rc2 31.Rd2 Rd2 32.Kh3 Rh2#) 0–1. Tiedemann,Joern (1810) – Juha,Michael (1640), RSS7E adv–28, 2006.

4.Nf3 h6 5.Ne5+/- Be5 6.Be5 f6 (6...Nf6 7.e3+/-) 7.Bb2 Ne7 8.e3 (8.e4 0-0+-) 8...d6 (8...0-0!?+/-) 9.Qh5+- g6 (9...Kf8 10.Bc4 d5 11.Bb3+-) 10.Qf3 c6 11.bc6 Nbc6 (11...Qc7 12.Nc3 0-0 13.Ne4+-) 12.Bf6 (12.Qf6?! Rf8 13.Qh4 h5+-) 12...Rf8 (12...Kd7 13.Bh8 Qh8 14.d4+-) 13.Be7 Qe7 (13...Rf3 14.Bd8 Rf8+-) 14.Qc6 Qd7 (14...Kd8 15.Qa8 Qf6 16.Ba6 Qa1 17.Qc8 Ke7 18.Qc7 Kf6 19.0-0+-) 15.Qa8 Rf2 (15...Qb7 16.Qb7 Bb7+-) 16.Kf2 Qf5 17.Ke1 Kd7 18.Qa7 Kd8 19.Qb6 (19.Qb6 Ke7 20.Nc3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.g3 Bb7 5.Nf3=.

4.g3 Nf6 5.Nf3 Bb7 6.Bg2 e4 7.Ng5 h6 (7...a6 8.Nc3 Qe7 9.d3=) 8.Nh3 (8.Bf6!? Qf6 9.Ne4 Be4 10.Be4 Qa1 11.Ba8+/–) 8...0-0 9.Nc3 Re8 10.0-0 a6 11.d4 (11.a4 Bc5=) 11...Ra7 (11...ab5 12.Nb5 Bf8 13.c4=+) 12.d5 (12.a4 Bf8=) 12...e3 (12...Be5 13.a4=+) 13.f3 (13.a4 ef2 14.Nf2 Bc5=) 13...Nh5 (13...Be5!?=+) 14.f4 ab5 15.Nb5 Ra5 16.Nd6 cd6 17.Bf3 Nf6 18.c4 Na6 19.Bc3 Rc5 20.Qd4 Qc8 21.Qd3 Rc4 (better is 21...Nd5!? 22.Bd5 Bd5=+) 22.Bf6+= gf6 23.Qf5 Nc5 (better is 23...Qd8=) 24.Qf6+- Ne4 25.Qh6 Bd5 26.Ng5 Ng5?? (26...Qc5+-) 27.Qg5 (27.fg5?! Re6 28.Qh5 Bf3 29.Qf3 Qf8+/–) 27...Kf8 28.Qd5 (28.Bd5 Rc5+-) 28...Qc7 (28...Qc5 29.Qb7+-) 29.Bh5 Re7 30.a4 Rc5 31.Qf3 b5 32.ab5 Rb5 33.Ra8 Kg7 (33...Rb8+-) 34.Qg4 Kf6 35.Qh4 Ke6 36.Bg4 f5 37.Qh6 Kd5 38.Rd1 Kc6 39.Bf3 Kb6 40.Rd6 Kc5 41.Rd5 Kb4 42.Ra1 Rd5 43.Rb1 Ka5 44.Ra1 Kb5?? 45.Qa6 Kb4 46.Rb1 Kc5 47.Rc1 (47...Kb4 48.Rc7 (48.Bd5?! Qc1 49.Kg2 Qc5=) 48...Rd1 49.Kg2 d5 50.Qb6 Ka3 51.Re7 Rd4 52.Ra7 Ra4 53.Bd5 Ra7 54.Qb3#; 47.Qb5 Kd4 48.Qd5 Kc3 49.Qd3#) 1–0. MasterofDisaster – notbad, Live Game Caissa's Web, 2004.

4.g3 Nf6 5.Bg2!? c6 6.Nf3=.

4.e3 d5 5.c4 Bb7 6.cd5 Bd5 7.Nc3 Nf6 8.Nd5 Nd5 9.Qg4 Nd7 10.Qe4 Ne7 11.Bc4 Nc5 (11...a6 12.Qf3 f6 13.ba6+-) 12.Qf3 Nd3?? (12...Ne6+-) 13.Bd3 Qd3 (13...a6 14.Bc4 f5 15.Qh5 Kd7 16.Nf3 ab5 17.Ne5 Kc8 18.Nf7 bc4 19.Nd8 Kd8 20.Qf7+-) 14.Qa8 Kd7 15.a4 Nd5 (15...Qb3 16.Bd4 Qd5 17.Qd5 Nd5 18.Nf3+-) 16.Nf3 Nb4 (16...f6 17.Qc6 Kd8+-) 17.Ne5 (17.Ne5 Ke7 18.Nd3 Nd3 19.Ke2 Nb2 20.Rhc1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 d5 5.c4 Be6 6.cd5 Bd5 7.Nc3 Nf6 8.Nh3 Bb4 9.Nd5+- Nd5? (better 9...Qd5 10.Nf4 Qd6 11.Bf6 Qf6+/-) 10.Qb3 0-0 (10...a5 11.a3 Bd2 12.Kd2 Nf6 13.Kc2+-) 11.Bc4 Bd2 (11...Nd7 12.Bd5 Nc5 13.Qc4 Nd3 14.Ke2 Nb2 15.Qe4+-) 12.Kd2 Nf6 13.Ke2 Ng4 (13...Nbd7+-) 14.Rhd1 Qe7 (14...Nd7 15.Bd5 Nc5 16.Bf7 Rf7 17.Rd8 Rd8 18.Qc4+-) 15.Qc3 Nf6 (15...Qf6 16.Bd5 c6 17.bc6 Qc3 18.Bc3+-) 16.Ba3 Qe8 17.Bf8 Qf8 (17...Kf8 18.Ng5 Nbd7 19.Bf7+-) 18.Ng5 Nbd7 19.Nf7 (better 19.Bf7 Kh8 20.Qc6+-) 19...g6 (19...Qe7+-) 20.Ne5 Kg7 21.Nd7 Qe7 22.Nf6 Qf6 (22...Kh6 23.Rd5 g5 24.Rd7 Re8 25.Ng8 Kh5 26.Ne7 c5 27.Bf7 Kh4 28.Qe5 Re7 29.Qg3) 23.Rd7 (23.Rd7 Kh6 24.Qf6 Kh5 25.Rh7 Kg4 26.Qg6) 1-0. DEFFM – KIAUA, freechess.org, 2021.

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 b6).

4.h4 a6 5.e3=+.

4.h4 d5 5.h5 (5.e3 a6 6.Nc3 Nf6=+) 5...d4 (5...a6 6.Nc3=+) 6.g3 (better 6.d3!? Nf6 7.de4 Ne4 8.Qd4 Qd4 9.Bd4+=) 6...Bb7 7.Bg2 Nf6 8.d3 Nbd7 (8...a6!?=+) 9.Nd2= Nc5 10.f3?? (better 10.Ne4 Nce4 11.de4 Ne4 12.Nf3=) 10...e3 (10...Na4 11.Rb1 e3 12.Nc4-+) 11.Ne4 (11.Nb3 Ne6-+) 11...Qd7 (11...Na4 12.Rb1 Nb2 13.Rb2-+) 12.a4 (12.Kf1!?–/+) 12...Nce4-+ 13.de4 0-0-0?? (better 13...Qd6 14.Kf1 Qg3-+) 14.Bd4 (better 14.Bh3 Bd6 15.Bd7 Rd7 16.g4+-) 14...Qd4-+ 15.Qd4 Rd4 16.e5 Bb4 17.Kf1 Nd5 18.f4 Nc3 (18...Bc3!? 19.Rb1-+) 19.Bb7 Kb7 20.Nf3 Rd1 (better 20...Rd2 21.Nd2 ed2-+) 21.Rd1 Nd1 22.Kg2 (22.h6 g6 23.f5 Nc3-+) 22...Rd8 (better 22...Nc3 23.h6 gh6-+) 23.Ng5 Nc3 (23...Rd2 24.Kf3 h6 25.Nf7 Bc5-+) 24.Nf7 (better 24.Kf3!?-+) 24...Rd2 25.Rb1?? (25.h6 g6 26.Kf3 Re2 27.Nd8 Kc8 28.Ne6-+) 25…Nb1 (25...Nb1 26.Kf3 Bc5-+) 0–1. pumpkin516 – seoulman, gameknot.com, 2020.

4.e4 Nf6 5.Nc3 Bb7 6.d3 (6.Qe2 a6=) 6...a6+= 7.a4 a5 (7...Qb4 8.Rb1+=) 8.Nf3= h6 9.Be2 c6 (9...d5!? 10.0-0 de4 11.de4 Nbd7=) 10.0-0+/– d6 11.Ba3 (11.d4!?+/–) 11...c5+= 12.Nd2 d5 (12...Nbd7 13.Nc4+=) 13.ed5 Nd5 14.Nde4 (14.Nd5 Bd5 15.Bf3 Qe6+/–) 14...Nc3 15.Nc3 Qe6 16.Bf3 Bf3 17.Qf3 Bd6?? (better is 17...Ra7+/–) 18.Qa8+- 0-0 19.Nd5 Nd7 20.Qc6 e4 21.de4 Ne5 22.Qb6 Nd7 23.Qa6 Qe5 24.f4 Qd4 25.Kh1 Qe4 26.Qd6 Rd8 27.Ne7 Kh8 28.Nc6 Re8 29.Qd7 Re6 30.Ne5 Qf5 31.Nf7 Kh7 32.Rae1 Kg6 33.Re6 Kh7 34.Nh6 Qc2 35.Ng4 Qf5 36.Rh6 Kg8 37.Qf5 gh6 38.Qg6 Kf8 39.Bc5# 1–0. Tiedemann,Joern (2125) – Witt,Monika (1605), remoteschach.de, 2007.

4.Nf3 f6 5.Nc3 Bb7 6.e4 c6 7.a4 cb5 8.ab5 a6 9.Ba3 Qf7 10.ba6 Ba6 11.Nd5 Ba3 (better is 11...d6+-) 12.Nc7 Kd8 13.Na8 Bb2 (13...Bf1 14.Kf1 Bc5+-) 14.Ba6 (< 14.Ra6 Na6 15.Ba6 Qa2+-) 14...Ba1 15.Qa1 Na6 16.Qa6 Qe6 17.Nb6 Ke7 18.d4 Nh6 (18...Kf7 19.de5 Ne7 20.Qb7+-) 19.Qb7 (19.d5!? Qg4 20.d6 Kf7 21.Qc4 Kg6+-) 19...Rd8 20.de5 fe5 21.Qc7 Qg4 (21...Nf7+-) 22.Nd5 Ke8 23.Qe5 Qe6 24.Nc7 Kf8 25.Ne6 de6 26.Ng5 Nf7 27.Qc7 Kg8 28.Qf7 Kh8 29.Ne6 Rg8 30.c4 (30...h6 31.Qg6 Rc8 32.Qg7) 1–0. miehnekort – muertolh, Yahoo, 2005.

4.Nf3 Bd6 5.e3 Bb7 6.d4 e4 7.Ne5 Be5 (7...Bb4 8.Nd2=) 8.de5 Qg6 9.Qd4 Ne7 10.e6 f6 (worse 10...Qe6 11.Qg7 Rg8 12.Qh7+/-) 11.Nc3 de6 12.Qc4 0-0?? (better 12...Nd7=) 13.Qc7+- (13.Qe6?! Qf7 14.Bc4 Qe6 15.Be6 Kh8+/-) 13...Nd5 (13...Bc8 14.Qe7 Re8 15.Qd6+-) 14.Qb7 Nc3 (14...Qf7 15.Qa8 Na6 16.Qc6+- (16.ba6?! Ra8 17.Ne4 Qg6+-)) 15.Bc3 Qf7 (15...Na6 16.Qa6 Rfc8 17.Qa3+-) 16.Qa8 Nd7 (16...Qc7 17.Bb4 f5 18.Rd1+-) 17.Qa7 Rc8 18.0-0-0 Rd8 (18...Nc5 19.Qf7 Kf7 20.Rd6+-) 19.Qb6! Qe8 (19...Nb6 A pinning theme 20.Rd8) 20.Qc7 h6 21.Ba5 Ra8 22.Rd7 Qf8 23.Bb4! Rc8 (23...Qb4 Theme: Deflection from g7 24.Rg7 Demolishes the pawn shield) 24.Bf8 Rc7 25.Rc7 Kf8 (25...f5 26.Rg7 Kf8 27.Rc7 e5 28.b6 f4 29.b7 fe3 30.b8Q) 26.b6 (26.b6 Kg8 27.b7 Kh8 28.b8Q Kh7 29.Qf8 Kg6 30.Rg7 Kf5 31.Qc5 e5 32.Qc8; 26.Bc4 Kg8 27.Be6 Kh7 28.Bf5 Kg8 29.Rd1 Kf8 30.Rd8) 1-0. GuestGRDT – GuestFGWJ, freechess.org, 2020.

4.Nf3 Bd6 5.e3 Bb7 6.d4 Bf3 7.Qf3+= Qf3 8.gf3 f6 9.Bc4 Ne7 10.Rg1 g5 (10...Kf8!? 11.d5 a6=) 11.de5+/- Be5 12.Be5 fe5 13.Rg5 d6 14.Nc3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 a6 6.d4 e4 7.Nfd2=.

5.e3 Bd7 6.c4 c6 (6...Qg6 7.Nc3+=) 7.Bd3 (7.d4 e4 8.Nfd2 Qg6+=) 7...Be7 8.0-0 cb5 (8...a6 9.bc6 Bc6 10.Be2+=) 9.cb5 Qe6 10.Ne5 de5 11.Qf3 Nc6 12.Be4 Rc8 13.Bd5 Qg6 (13...Qf6 14.bc6 (14.Bc6?! Bc6 15.bc6 Qf3 16.gf3 Bf6=) 14...Bc6 15.Rc1+/-) 14.bc6 Bc6 15.Rc1 Bd5? (better 15...Bd7 16.Rc8 Bc8 17.Be5 Nf6 18.Bc6 Nd7+-) 16.Rc8+- Kd7 17.Qd5 Kc8 18.Be5 (worse 18.Qe5 f6 19.Qe6 Kb8+-) 18...Bc5 (18...a6+-) 19.d4 Qc2 (19...Bb4 20.Qc4 Kb7 21.Qb4+-) 20.Qc6 Kd8 The mate threat is Qd1 21.Na3!! Ba3 A pinning theme (21...Qd3 22.dc5 f6+-) 22.Qc2 Ne7 23.Qc7 Ke8 24.Qb8 Kd7 25.Qa7 Ke6 26.Qb6 Kf5 27.e4! Ke4 Decoy to e4 28.Qb3 Ra8 (28...Kf5 29.Qh3 Kg5 30.f4 Kg6 31.Qg4 Kh6 32.Bg7) 29.Qf3 1-0. DEFFM – GuestYCSC, freechess.org, 2020.

5.e3 h6 6.Nc3+= Be6 (6...Bb7 7.Bc4+=) 7.Ne4 (7.d4 Nd7+/–) 7...Qe7 8.Be2 (8.a4 Nf6 9.Nf6 Qf6+=) 8...f5 (8...Nf6 9.Nf6 Qf6 10.0-0+=) 9.Ng3 Nd7 (9...a6 10.ba6 c6 11.0-0+=) 10.c4 Nc5 (10...f4!? 11.Ne4 Ngf6 12.Nf6 Qf6+=) 11.Qc2 e4 12.Nd4 0-0-0 (better is 12...Qd7!?+/–) 13.Nc6+- Qd7 14.Nd8 Kd8 (14...Qd8 15.0-0 Nf6 16.f3+-) 15.Nh5 (better is 15.0-0+-) 15...Nf6?? (15...Kc8+-) 16.Nf6 gf6 17.Bf6 Be7 18.Bh8 Nd3 19.Bd3 ed3 20.Qd3 Bg5 21.a4 Qf7 22.Rc1 Bd7 23.h4 Bf6 24.Bf6 Kc8 25.Bc3 f4 26.Qe4 d5 27.Qf4 Qf4 28.ef4 dc4 29.Bg7 h5 30.Rc4 Kb7 31.Ke2 c5 32.bc6! Bc6 33.f3 a5 34.Rhc1 Bd5 35.Rc7 Ka6 36.f5 b5 37.f6 b4 38.f7 Bf7 39.R1c6 1–0. pumpkin (2485) – valerypavlovich (2115), net–chess.com, 2004.

5.e3 h6 6.h3 Bf5 (6...a6 7.d4 e4 8.Nfd2=) 7.c4 (7.Nc3 a6+=) 7...Nd7 8.Be2 (8.Nc3 Ne7+=) 8...Nc5 (8...Be7 9.d3=) 9.d4+= ed4 10.Bd4 Qg6 (better is 10...Qe6!?+=) 11.Nh4+- Qg5 12.Nf5 Qf5 13.0-0 (13.Bf3 Rb8+-) 13...Ne4 (better is 13...Nf6!?+/–) 14.Bd3 f6?? (14...Qe6 15.Qf3 f5+-) 15.Nd2 Nf2 16.Bf5 Nd1 17.Rad1 Ne7 18.Be4 Rb8 19.Rf2 Kd7 20.Nf1 h5 21.Ng3 Rh6 22.Nf5 Nf5 23.Bf5 Kd8 24.a4 Be7 25.c5 g5 26.e4 bc5 27.Bc5 Rb7 28.Be6 g4 29.Be3 Rg6 30.hg4 hg4 31.Bd5 g3 32.Rc2 Kc8 33.Bb7 Kb7 34.Rdc1 Bd8 35.Rc6 Rg4 36.R1c4 Rh4 37.Kf1 Rh1 38.Ke2 Rh2 39.Kf3 Rh1 40.Kg3 Re1 41.Bf2 Ra1 42.Ra6 Ra3 43.Kf4 Ra2 44.Ra7 Kc8 45.Kf3 Ra3 46.Be3 Kd7 47.a5 Ke6 48.b6! cb6 49.ab6 Re3 50.Kf4 Bb6 51.Ra6 Rb3 52.Rc6 Bc5?? 53.Rc5 Rb2 54.g3 Rf2 55.Ke3 Rg2 56.Kf3 Rd2 57.Rd5! Rd5 58.ed5 Kd5 59.Kf4 Ke6 60.g4 Kd5 61.Kf5 Kc5 62.Kf6 d5 63.Ra5 Kc4 64.Rd5! Kd5 65.g5 1–0. pumpkin (2255) – valerypavlovich (2025), net–chess.com, 2003.

5.e4 Qg6 6.Nc3 a6=.

5.g3 a6 6.Bg2 ab5 7.Ne5 c6 8.Nd3 Qe6 9.Nf4 Qf5?? (better is 9...Qe7+=) 10.Bh3+- Qe4 11.f3 Qb4 12.Bc3 (12.Bc8?! Qb2 13.Nc3 b4=) 12...Qa4 (12...Qf4 13.gf4 (13.Bc8?! Qa4=) 13...Bh3 14.e4+-) 13.Bc8 b4 14.Bb2 Nd7 15.Bd7 Kd7 16.a3 ba3 (16...Qb5+-) 17.Ra3 1–0. Fritz 11 – kevin_falk, internet, 2014.

4.e3 d5 5.Be5+/– Nfd7 6.Bd4 Bb4 (better is 6...c5!? 7.bc6 Nc6+=) 7.Bg7+- Rg8 8.Bc3 a5 9.a3 Bc3 10.Nc3 Ne5 11.h3 (11.Qh5 Rg5 12.Qh7 Qd6+-) 11...Nbd7 (11...c5 12.Qh5 Qf6 13.Qh7=+) 12.Nd5 Bb7 13.Nf4 Nc5 (13...c5 14.Nge2+-) 14.Qh5 (better is 14.d4 Ng6 15.Ng6 Rg6 16.dc5 Bg2 17.Bg2 Rg2+-) 14...Ng6 15.Qh7 Rf8 (15...Rh8 16.Qg7 Ne4+-) 16.Bc4 (16.Ng6 Qf6 17.Nf8 Qa1 18.Ke2 Kf8+-) 16...Qd6?? (16...Nf4 17.ef4 Qd4 18.Bf7 Rf7 19.Qg8 Rf8 20.Qg6 Kd7 21.Qg4 Kd6+=) 17.Nf3 (17.Bf7!? Rf7 18.Qg6 Qg6 19.Ng6 Bg2+-) 17...0-0-0 (17...Nf4 18.ef4 Bf3 19.gf3 Qd4 20.Bf7 Rf7 21.Qg8 Ke7 22.Qg5 Kd7 23.Qg4 Ne6=) 18.0-0 (18.Nd3 Qf6 19.Ke2 Bf3 20.gf3 Nh4+-) 18...Ne5?? (18...Nf4 19.ef4 Bf3 20.gf3 Qf4 21.Bf7 Rf7-+ (21...Qf7 22.Qf7 Rf7 23.d3=)) 19.d4 (better is 19.Ne5 Qe5 20.d4 Rd4 21.ed4 Qf4 22.dc5 Qc4 23.c6+-) 19...Nc4 20.dc5 Nb2?? (20...Qc5 21.Qh5 Qh5 22.Nh5 Bf3 23.gf3 Rd5+-) 21.cd6 cd6 22.Qh6 (22.Qf5!? Kb8 23.Ne5 Rh8+-) 22...Be4 23.Rfc1 (23.Qg7 Bf3 24.Qb2 Rg8+-) 23...Kb7 24.Nd2 Bg6 25.Qg7 Na4 26.Qd4 (better is 26.Ng6 Rg8 27.Qf7 Kb8+-) 26...Nc5 27.Nc4 Bc2 28.Rc2 Nb3 29.Qd5 (better is 29.Qb6 Ka8 30.Rb1 a4+-) 29...Kc7 30.Nd2 (30.Nd6 Nc5 31.Qc6 Kb8 32.Rc5 Rd7 33.Qd7 bc5 34.Qb7) 30...Nc5 31.Qc6 Kb8 32.Nd5 (better is 32.Qb6 Nb7+-) 32...Rc8 33.Qb6 (better is 33.Qd6 Kb7 34.Rac1 a4+-) 33...Nb7 34.Rc8 (34.Nc4!? a4+-) 34...Kc8 35.Qc7 1–0. Steingraeber,Barbara – Schroth,Andy, remoteschach.de, 2002.

4.e3 e4!?=.

4.Be5 a6+=.

4.Be5 d6 5.Bb2 Bd7 6.a4 a6 7.e3 a5 8.Nf3 c6 9.c4 cb5 10.ab5 Bg4 11.Be2 Bf3 (better 11...d5!?+/-) 12.Bf3+- (12.gf3?! d5+/-) 12...Ra7 13.Bf6 Qf6 14.Nc3 Rc7? (14...Qg5+-) 15.Nd5 Qd8 16.Nc7 Qc7 17.Qc2 Be7 18.Bd5 0-0 19.0-0 Bf6 (19...Nd7 20.Rfc1+-) 20.d4 Nd7 21.Be4 g6 22.Bd5 h5 (22...Bg7+-) 23.Qg6 (23.Qg6 Bg7 24.Qh5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Rb1 a6 5.a4=.

4.Rb1 Nf6 5.Nf3 (5.d4 ed4 6.Qd4 c5 7.Qe5 Qe7 8.Qe7 Be7=) 5...Bd6 (5...d5 6.d4 (6.Ne5? d4-+) 6...e4 7.Ne5=+) 6.Rb3 (6.d4 ed4 7.Qd4 a6=) 6...c5 (6...0-0 7.d4 e4 8.Ne5=+) 7.Na4 (7.e4 Bc7 8.Bc4 Ne4 9.Ne4 Be4=) 7...a6 (7...0-0 8.Bb2 e4 9.Nh4=+) 8.Nc3 (8.ba6 Ra6 9.Nc3 e4=+) 8...c4 (8...0-0 9.ba6 Na6 10.e3=+) 9.Rb1 0-0 (9...e4 10.Nd4=) 10.a4 (10.d4 Bf3 11.gf3 Qe7=) 10...e4 (better is 10...Bc7=+) 11.Nh4?? (better is 11.Nd4=+) 11...Ng4-+ 12.Nf5 Qf6 13.f3 ef3 14.ef3 Re8 15.Be2 Qf5 16.fg4 Qg4 17.0-0 Qg2 0–1. Jolilein – Pocket, mySchach.de, 2005.

4.Rb1 Qg5 5.e4 (5.d4 Qf6 6.de5 Qe5 7.Qd3+=) 5...h5 (5...Qe7 6.Bc4+=) 6.d3 (6.Nf3 Qg4+/–) 6...Qf6 (6...Qe7 7.Nge2+=) 7.Nh3 (better is 7.Nf3+/–) 7...Bb4?? (better is 7...a6+=) 8.Bg5 (better is 8.Rb4 a6 9.d4+–) 8...Bc3-+ 9.Bd2 Bd4 10.Rb4 Bc8 11.Bg5 Qd6 12.Rc4 Qa3 13.Rc7 Qb4?? 14.Ke2?? Ne7 15.Be7 Ke7 16.Rc4? Qb5 17.Rd4 ed4 18.c4 Qa5 19.Qa1 Nc6 20.Nf4 Kd8 21.Kf3 d6 22.Be2 Ne5 23.Kg3 h4 0–1. Jolilein – Kitama, mySchach.de, 2005.

4.e3 Nf6 5.Rb1 (5.Nf3 e4 6.Nd4 Bc5=) 5...d6 (better is 5...a6=+) 6.Bc4?? (6.d4 ed4 7.ed4 Be7=) 6...d5 (better is 6...Bg2 7.d4 Nbd7-+) 7.Be2=+ Be7 (7...a6 8.Nf3 ab5 9.Rb5=+) 8.Nf3 e4 9.Ne5 Bd6 10.f4 ef3 11.Nf3= h6 12.Nd4 a6 13.a4 a5 14.Bg4 Ng4= 15.Qg4 0-0 16.Nf5+= Qg5 17.h3 Nd7 18.0-0 Ne5 19.Qd4 f6? 20.Nd5 Bc5 21.Qe4 Rfe8?? 22.Nfe7?? Be7 23.Rf5 Qg6 24.Ne7 Re7 25.Qb7 Ree8 26.Qd5 Kh7 27.e4+/– Rad8 28.Qb7 Rd7 29.Rb3 Qf7 30.Bb2 Qg8 31.Rc3 Ree7 32.Rc6?? Nc6-+ 33.Qc6 Rd6 34.Qc3 Rde6 35.d3=+ Qf7 36.g4 g6 37.Rd5 g5 38.Kf2 Kg6 39.Kf3 Re5= 40.Rd4 h5 41.h4?? Kh6?? 42.Bc1 Kg6 43.Qe1 Qe6 44.gh5= Kh6 45.Qg3 Rf7 46.Bf4 c5? 47.Rd8+– Kh7 48.Kg2 g4+/– 49.h6 Rh5 50.Rd6+– Qc8 51.Rb6 Rh6?? 52.Rb8 Qd7 53.Bh6 Kh6 54.Qe3 Kg7 55.Qc5 Qe6 56.Qh5 Rf8 57.b6 Rb8–/+ 58.Qa5 Rb6 59.Qa7 Kf8 60.a5 Rb2 61.Qc5 Kg7 62.Qc3? Ra2 63.Qc4?? Qc4-+ 64.dc4 Rc2 65.Kg3 Rc4 66.Kg4 Re4 67.Kh3 Re8 68.h5 Rg8 69.Kh4 Kh6 70.a6 f5 (71.a7 f4-+) 0–1. Jolilein – MichaelKnopf, mySchach.de, 2005.

4.e4 Nf6=.

4.Nf3 e4 5.Nd4 a6=.

4.Bb2 d6 5.d4 a6 (5...ed4 6.Bd4 a6 7.Nf3=) 6.de5+= de5 7.Be5 ab5 8.Bb5 Nd7 9.Nf3 c6 10.Bc4 b5 11.Bb3 Ngf6 (11...c5 12.Bd5 Bd5 13.Qd5+=) 12.Bb2 Bb4 13.c3 Be7 14.0-0 0-0 15.c4 b4 (15...Nc5 16.Nd4+=) 16.a3 c5 17.ab4 Ra1 18.Ba1 cb4 19.Nbd2 Bc5 (19...Nc5 20.Bd4+=) 20.Bd4+/– Qc7 (20...Qe7 21.Qb1+/–) 21.Qc2 Ra8 22.Rd1 h6 (22...Bd6 23.Qb2+/–) 23.Qb2 Bc6 (23...Be7 24.Ne5+/–) 24.Nh4 (24.Bc2 Bf3 25.Nf3 Bd4 26.Rd4 Rb8+/–) 24...Bd6 (24...Ng4 25.Ndf3+/–) 25.h3 Bb7 (25...Qa5 26.Qb1+/–) 26.Nf5 Qc6 27.f3 Bf8 28.Bc2 g6 29.Ng3. Van Rooijen,Peter – Bongiovanni,Claudio, CC.2003.0.00054, 2003.

4.Bb2 d6 5.f3 a6 6.ba6 Na6 7.d4 =+.

4.Bb2 d6 5.f3 g6 6.g3 Bg7 7.e4 f5 8.d3 fe4 (8...Ne7 9.Nh3–/+) 9.fe4 Nf6 10.Bg2 Nh5 11.Ne2 Qd7 12.a4 Qg4 (12...0-0 13.Rf1=) 13.Nbc3 Nd7 (13...0-0 14.h3 Qg5 15.Qc1=) 14.Nc1 (better is 14.h3!? Qg5 15.Bc1+/–) 14...Qd1 15.Nd1 a6 16.ba6 Ra6 17.0-0 Rf8 18.Ne3 Rf1 19.Nf1 (19.Kf1 Nc5=+) 19...Bh6 (19...Nc5!?–/+) 20.Ne2 Nc5 21.Ne3?? (21.Nc3 Ng7=+) 21...Ra4 (21...Be3 22.Kf1-+) 22.Ra4?? (22.Nd5 Bd5 23.ed5 Be3 24.Kf1 b5–/+) 22...Na4 (better is 22...Be3 23.Kf1 Na4-+) 23.Bc1–/+ Nf6 24.c4 (24.h3 Kd7–/+) 24...c5 (24...c6 25.h3-+) 25.Nd5 Nd5 26.Bh6 Ne7 (26...Nb4 27.Nc1-+) 27.Bg5 Kf7 28.Bh3 Nb2 29.Nc1 Bc8 (29...Bc6 30.Kf2–/+) 30.Bc8 (better is 30.Be7!? Bh3 31.Bd6=) 30...Nc8–/+ 31.Bd8 Ke8 32.Bc7? Kd7-+ 33.Bb8 Na4 34.h4 Kc6 35.g4 Kb7 36.Bd6 Nd6 37.Kg2 Nb2 38.Kg3 Kc7 39.h5 g5 40.Kf3 b5 41.cb5 Nb5 42.Ke3 Nd6 43.Nb3 c4 44.dc4 Nbc4 45.Kd3 Kc6 46.h6 Kb5 47.Nd2 Nd2 48.Kd2 Ne4 49.Ke3 Nf6 50.Kf3 Kc5 51.Kg3 Kd5 52.Kf3 Ng8 53.Ke3 Nh6 54.Kf3 Kd4 55.Kg3 Kd3 56.Kf3 e4 57.Kg3 Kd2 58.Kf2 e3 59.Kf1 Ng4 60.Kg2-+ e2 61.Kg3 h5 62.Kh3 e1Q (63.Kg2 Qf2 64.Kh3 Qf3) 0–1. MasterofDisaster – kdfoerster, Live Game Caissa's Web, 2004.

4.Bb2 e4 5.Nc3 Nf6 6.a3 (6.Nge2 d5=) 6...d6 (6...d5 7.Nge2=+) 7.d3 ed3 8.Qd3 (8.cd3 d5=) 8...Nbd7 9.0-0-0 (9.Nf3!?=) 9...Nc5 10.Qd4 Be7 11.f3 0-0 12.h4 (12.Nh3 a6 13.ba6 Na6–/+) 12...Re8 13.g4 Ne6 14.Qd2 (14.Qa4 Qc8–/+) 14...Ng4!-+ 15.e4 (15.fg4 Bh1 Pinning (15...Bh1 Deflection)) 15...Nf6 16.Nh3 c6 (better 16...Nh5!?-+) 17.Rg1=+ cb5 (17...a6 18.bc6 Bc6 19.Nf4=) 18.Nb5 (better 18.Bb5 g6 19.Be8 Qe8 20.Nd5 Bd5 21.ed5+-) 18...Nd7?? (better 18...d5!? 19.e5 Nd7=) 19.Qh6?? (better 19.Nd6 Bd6 20.Qd6 Qh4 21.Qd7 Be4 22.fe4+-) 19...g6?? (better 19...Bf8 20.Nd6 g6+-) 20.Ng5+- Bf8 (20...Ndf8 21.Nh7! Nh7 22.Rg6 fg6 23.Qg6 Kf8 24.Qh6 Kf7 25.Qh7 Kf8 26.Qf5 Bf6 27.Bf6 Ng7+-) 21.Qh7 1–0. pumpkin516 – seoulman, gameknot.com, 2020.

4.Bb2 f6 5.d4 ed4 6.Bd4=.

4.Bb2 f6 5.Nf3 Nh6 6.Nh4 (6.Be2 a6=) 6...g6 (6...a6 7.d4=+) 7.Nc3 d6 (7...a6 8.d4=) 8.Bc4 f5 9.Nf3 Bg7 10.0-0 Qe7 (10...a6 11.a4+=) 11.a4 a5 12.Nd5 Qd7 13.Ng5 Ng4 (13...Kd8 14.d4+-) 14.Ne6! Bd5 (14...Qe6 15.Nc7 Double attack (15.Nc7 Decoy)) 15.Bd5 Ra7 16.Qe2 Nf6 17.Bb3 h6 18.f4 e4 (18...Ne4 19.d3 Nc5 20.Nc5 bc5 21.e4+-) 19.d3 d5 (19...ed3 20.cd3 Qe7 21.e4 (21.Ng7?! Qg7 22.e4 Kd8+-) 21...fe4 22.de4+-) 20.Ng7 Qg7 21.de4 de4 22.Qc4 Qe7 (22...Rf8 23.Ba3 Kd8 24.Rfd1 Kc8 25.Bf8 Qf8 26.Qf7+-) 23.Ba3 Qg7 24.Qe6 Kd8 25.Bb2 Rf8 (25...Nbd7 26.Rfd1 Kc8+-) 26.Rad1 Nbd7 27.Bf6 Rf6 28.Rd7! Qd7 29.Qf6 Kc8 (29...Qe7 30.Rd1 Kc8 31.Qe7 Ra8 32.Rd8 Kb7 33.Bd5 Ka7 34.Ra8) 30.Be6 (30.Be6 Kb8 31.Qf8 Kb7 32.Bd7 Ra6 33.Bc6 Ka7 34.Qa8) 1–0. Janek – Meisi2019, internet, 2019.

4.Nc3 d5 5.Na4 (5.Nf3 Bd6=) 5...Nf6 6.Bb2 Nbd7 7.Qc1 (7.Nf3 Bd6=+) 7...Bd6 8.Nf3 0-0 9.Ng5 (9.Nc3 d4 10.Nd1 de3 11.fe3 c5–/+) 9...h6 10.Ne6?? (better is 10.Nf3–/+) 10...fe6-+ 11.Nc3 c5 12.Ne2 d4 13.Ng3 Ne4 14.Ne4 Be4 15.f3 Bb7 16.h4 e4 17.f4 e5 18.Bc4 Kh8 19.g3 ef4 20.ef4 e3 21.de3 Bh1 22.Kd2 de3 23.Kc3 Bb7 24.Qe3 Nf6 25.Rg1 Bd5 26.Bd3 c4! (27.Kd2 Re8-+) 0–1. steelkingdom – ThisSiteIsCrap11, Live Game Caissa's Web, 2004.

4.Nc3 Nf6 5.Bb2 Bc5 (5...a6 6.Nf3=) 6.Bc4 (6.Nf3 a6=) 6...0-0 (6...Be4 7.Ne4 Ne4 8.Qh5=+) 7.Nh3 (7.Qf3 a6=+) 7...c6 (7...Ne4 8.Ne4 Be4 9.Qg4 Bc2 10.Be5=+) 8.bc6 Bc6 (better is 8...Nc6 9.0-0 Nd4=+) 9.g4? (9.Qf3 Bd4 10.Ng5 h6 11.Nf7 Rf7 12.Bf7 Kf7–/+) 9...d5 (better is 9...Ne4!? 10.Nd5 b5-+) 10.ed5 Nd5 11.Bd5 Bd5 12.g5?? Bh1-+ 13.g6 fg6 14.f4 ef4 15.Nf4 Qh4 (16.Ke2 Qh2 17.Kd3 Qg3 18.Kc4 Rf4 19.d4 Nc6 20.Ne4 Na5 21.Kb5 a6 22.Ka4 b5 23.Ka5 Re4 24.Qh1 Qc7) 0–1. blacksteelpipe – heath, Live Game Caissa's Web, 2005.

4.Nc3 Nf6=+ 5.Bb2 Ne4 6.Ne4= Be4 7.Qe2 Bb7 8.Be5+= Qe7 9.Nf3 d6 10.Bc3 Qe2 11.Be2+= Nd7 12.0-0+/– Nf6 13.Rfe1 Be7 14.Bc4 d5 15.Bd3 Kd7? 16.Bf5+- Kd8 17.Ng5 Rf8 18.Re7! Ke7 19.Bb4 Kd8 20.Bf8 c6 21.Bg7 Ne8 22.Re1 Ng7 23.Nf7 Kc7 24.Re7 Kb8 25.Nd6 Nf5 26.Rb7 (26.Nb7?? Ne7 27.Nd8 cb5-+; 26.Nf5 cb5 27.f4 d4 28.Nd4 Bd5 29.Nb5 Ba2+-) 1–0. pierre – jogosh, internet, 2008.

4.Nc3 Nf6 5.Nf3 Bb4=.

4.Nc3 Nf6=+ 5.Nf3 Bc5 6.Ne5 Bd4 7.Nf3 Bc3 8.dc3 Ne4 9.Qd4 0-0 10.Bd3 Nc5 =+.

4.d3 a6 A) 5.Nf3 Bc5 6.Nc3 Qe7 7.Be2 Bf2 8.Kf2 Qc5 9.Be3 Qc3 10.Qd2 Qd2=+; B) 5.ba6 Na6 6.Nf3 Bc5 7.c3 Qe7 8.Be2 d5 9.d4 ed4 10.ed5 dc3=.

4.d3 d5 5.Nf3 Nd7=.

4.d3 Bd6 5.Nf3 a6 (5...0-0 6.Nbd2 a6 7.Bb2 ab5 8.Ne5 Nc6 9.Ng4 Be7 10.Be2 b4=; 5...Bb7 6.Bb2 Qe7 7.Be2 a6 8.a4 0-0 9.0-0 Ng4 10.Nfd2 Nh6=) 6.ba6 Na6 7.c3 0-0 8.Be2 Re8 9.0-0 Bf8 10.Bg5 Bb7+=..ed5 Nd5 8.Qe2 Nd7 9.Ba3 Qe6 10.Bf8 Rf8=+; B) 5.Nf3 B1) 5...Nf6 6.Bb2 d6 7.Be2 a6 8.a4 Qd7 9.Nc3 Be7 10.0-0 0-0=; B2) 5...a6 6.ba6 Na6 7.Be2 Nf6 8.Bb2 d6 9.0-0 Nc5 10.Nc3 Qd7=.

4.d3 Nf6 5.Nf3 g6 6.Ne5+= Bg7 7.Qf3 0-0 8.Bg5 d6 9.Ng4+/– Nbd7 10.Nc3?? Qe8?? 11.Bf6 Nf6? 12.Nf6 Bf6 13.Qf6 Qd7 14.h4 h5 15.Rg1 Kh7 16.Be2 Rg8 17.g4 Rg7 18.gh5 Kg8 19.0-0-0 Rf8 20.f4 Qe6 21.e5 de5 22.fe5 Qf6 23.ef6 Rh7 24.hg6 fg6 25.Rg6 Kh8 26.h5 Bc8 27.Ne4 Bf5 28.Rg5 Be4 29.de4 Rhf7 30.e5 c5 31.bc6 a5 32.Rd7 (32...Rg8 33.Rg8 Kg8 34.c7 Rd7 35.c8Q Rd8 36.Qd8 Kh7 37.Qe7 Kg8 38.Qg7#) 1–0. Guscebru – Russkygb, internet, 2008.

4.Nf3 a6 5.Ne5 ab5 6.Bb2 Nf6 7.Bb5 Qe7 8.Bc4 Be4 9.0-0 d5 10.Bb5 Nfd7 +/–.

4.Nf3 Bd6 5.d4 A) 5...ed4 6.Qd4 Nf6 7.Bg5 Be7 8.Bd3 a6 9.e5 Ng8 10.Be7 Qe7=; B) 5...Be4 6.Ne5 Qe7 7.Qe2 Be5 8.de5 Qe5 9.c4 f6 10.Bb2 Qe7=+.

4.Nf3 Nf6 5.d3 Bc5=.

4.Qg4 Nf6=+ 5.Qf5 Be4 6.Qe5 Be7 7.Bd3?? Bg2-+ 8.f3 Bh1 9.Bb2 0-0 10.Nc3 Re8 11.Qf5 g6 12.Qh3 Nh5 13.0-0-0 Nf4 14.Qh6 Nd3 15.cd3 Bf6 16.Nh3 Bf3 17.Rf1 Bg7 18.Qf4 Bd5 19.Nd5–/+ Bb2 20.Kb2= f5 21.Nc7 Qf6 22.d4 Re4?? 23.Qf2 Rd4-+ 24.Kc1 Rc4 25.Kd1 Rc7 26.Re1 Qf7 27.Ng5 Qa2 28.Re8 Kg7 29.Qd4 Kh6 30.Nf7 Qf7 31.Qh4 Kg7 32.Qd4 Qf6?? 33.Re7 Kh6 34.Qf6 Nc6 35.Qg7 Kg5+- 36.bc6 Rc6 37.Qh7 Rac8 38.h4 Kf4 39.Qh6 Kf3 40.Re3 Kf2 41.Qf4 (41...Kg2 42.Qg3 Kf1 43.Re1#) 1–0. manofsteel5 – gagneur, Live Game Caissa's Web, 2005.

4.Qh5 A) 4...Be4 A1) 5.Qe5 Qe7 6.Qe7 Ne7 7.Nc3 Bb7 8.Nge2 Nf5 9.Bb2 a6 10.f3 Be7=+; A2) 5.d3 Bb7 6.Qe5 Qe7= 7.Bf4 d6 8.Qe2 a6 9.c4 ab5 10.cb5 Nf6=; B) 4...d6 5.Bc4 Qd7 6.Nc3 Nf6 7.Qe2 a6 8.ba6 Na6 9.Nf3 Be7 10.0-0 0-0=; C) 4...Qe7 5.Nc3 Nf6 6.Qf5 a6 7.Nf3 ab5 8.Bb5 g6 9.Qe5 Qe5 10.Ne5 Ne4=+.

4.Bb2 A) 4...a6 A1) 5.Nf3 d6 (5...Bc5 6.Ne5 ab5 7.Bb5 Qe7 8.Qe2 Bb7 9.f3 0-0 10.Nd3 Ra5+/–; 5...Ne4 6.Ne5 Qf6 7.Qe2 Bb7 8.f3 Qh4 9.g3 Ng3 10.hg3 Qg3+-) 6.d4 Ne4 7.Bd3 Bb7 8.de5 Nc5 9.Be2 ab5 10.Bb5 Nbd7=; A2) 5.f3 ab5 6.Be5 b4 7.Bc4 Be7 8.Ne2 Nc6 9.d4 0-0 10.0-0 Ne5+=; A3) 5.Qf3 Bb7 6.Bd3 Qe7 7.Qf5 d6 8.Nc3 ab5 9.Bb5 c6 10.Be2 Na6+=; A4) 5.Qe2 ab5 6.Be5 Nc6 7.Bb2 Nb4 8.e5 Nfd5 9.Kd1 Ra2 10.Ra2 Na2+=; A5) 5.Nc3 ab5 6.Bb5 c6 7.Be2 Bb4 8.a3 Ba5 9.Bf3 0-0 10.Nge2 d6+=; A6) 5.Be5 Ne4 6.Qe2 d5 7.d3 Qe7 8.de4 Qe5 9.ed5 Qe2 10.Be2 Bb7+=; B) 4...Bc5 5.Be5 d6= (5...Ne4 6.Qg4 Nf2 7.Qg7 Rf8 8.Bf6 Qf6 9.Qf6 Nh1 10.d4 Be7+-) 6.Bb2 Ne4 7.d4 Bb4 8.c3 Ba5 9.Bd3 Qh4 10.Qe2 Bf5=; C) 4...Bb7 C1) 5.f3 Ne4 (5...Qe7 6.Ne2 a6 7.d4 ed4 8.Nd4 ab5 9.Bb5 Qe5 10.Bc3 Nd5+=; 5...Bd6 6.d4 ed4 7.Bd4 0-0 8.Bc4 Qe7 9.Ne2 a6 10.Nbc3 Be5=; 5...d6 6.d4 ed4 7.Bd4 a6 8.a4 d5 9.ed5 Nd5 10.Qe2 Ne7=) 6.Qe2 Nc5 7.Be5 Ne6 8.Nh3 a6 9.Nc3 Be7 10.Nf4 0-0+=; C2) 5.Nf3 Bc5 (5...Ne4 6.Ne5 Qf6 7.Qe2 Bc5 8.f3 Qh4 9.g3 Bf2 10.Kd1 Bg3+-; 5...d6 6.d3 a6 7.a4 Be7 8.Be2 0-0 9.Nc3 Nbd7 10.0-0 c6=; 5...Be4 6.Be5 d6 7.Bd4 Qe7 8.Be3 Nd5 9.c4 Ne3 10.fe3 a6=) 6.Ne5 Ne4 7.d4 Bb4 8.c3 Bd6 9.Qh5 Qe7 10.f3 Nf6=; C3) 5.Nc3 Bb4 (5...a6 6.Nf3 ab5 7.Bb5 Ba3 8.Ba3 Ra3 9.Ne5 Qe7 10.Nc4 Ne4=; 5...Bc5 6.Nf3 d6 7.d4 ed4 8.Nd4 Ne4 9.Ne4 Be4 10.Qg4 Bg6+=; 5...Bd6) 6.a3 Bc5 7.Na4 Bd6 8.Nf3 Ne4 9.d3 Nf6 10.Ne5 0-0–/+; C4) 5.Bd3 Ne4 6.Qe2 Nc5 7.Qe5 Qe7 8.Bf1 Ne6 9.Ba3 d6 10.Qe3 Nd7+=; C5) 5.Be5 Ne4 6.Qe2 f6 7.Bf4 Be7 8.Qh5 g6 9.Qe2 a6 10.Nh3 ab5+=; C6) 5.d3 d5 (5...d6 6.Nf3 a6 7.a4 Be7 8.Be2 0-0 9.Nc3 Nbd7 10.0-0 c6=; 5...Bd6 6.Nf3 Qe7 7.Be2 a6 8.a4 0-0 9.0-0 Ng4 10.Nfd2 Nh6=; 5...Bb4 6.Nd2 d5 7.Be5 Nbd7 8.Bd4 de4 9.c3 Bc5 10.de4 Bd4=; 5...Qe7 6.Nf3 d6 7.Be2 a6 8.a4 Qd7 9.Nc3 Be7 10.0-0 0-0=) 6.Be5 de4 7.de4 Qd1 8.Kd1 Ne4 9.Nh3 c5 10.f3 Nd7=; D) 4...d6 D1) 5.Nc3 a6 (5...Be7 6.d4 ed4 7.Qd4 a6 8.Nf3 0-0 9.a4 c5 10.Qd3 Be6=; 5...Bb7 6.d4 ed4 7.Qd4 Qe7 8.Bd3 d5 9.e5 c5 10.bc6 Nc6+=; 5...Nbd7 6.d4 Be7 7.Nf3 a6 8.ba6 0-0 9.Bb5 Ba6 10.Ba6 Ra6=; 5...Bd7 6.Nf3 a6 7.a4 Be7 8.Bc4 c6 9.d4 Qc7 10.0-0 0-0=) 6.d4 Bg4 7.Be2 Be2 8.Qe2 ed4 9.Nd5 ab5 10.Bd4 Be7+=; D2) 5.f3 a6 6.d4 ed4 7.Bd4 Be7 8.Nc3 0-0 9.Kf2 Be6 10.Rb1 ab5+=; D3) 5.Qf3 Bg4 (5...a6 6.d4 Bg4 7.Qe3 ed4 8.Bd4 Be7 9.Nf3 0-0 10.c4 ab5+=; 5...Be6 6.d4 d5 7.ed5 e4 8.Qe3 Qd5 9.c4 Qf5 10.Nc3 a6=; 5...Bb7 6.Nc3 a6 7.Nh3 Be7 8.Bc4 ab5 9.Bb5 c6 10.Be2 0-0=; 5...c6 6.bc6 a6 7.Bc4 Nc6 8.Nc3 Bg4 9.Qg3 Nd4 10.Rc1 Qc7=) 6.Qe3 a6 7.d4 ed4 8.Bd4 Be7 9.Nf3 0-0 10.Nc3 ab5+=; D4) 5.d4 Ne4 (5...ed4 6.Qd4 a6 7.Nc3 Be7 8.Nf3 0-0 9.a4 c5 10.Qd3 Be6=; 5...Qe7 6.de5 de5 7.Bd3 a6 8.Nf3 Nbd7 9.a4 Qe6 10.Ng5 Qd6=) 6.Qe2 Bb7 7.de5 d5 8.a3 a6 9.Nd2 ab5 10.Ne4 de4=.

4.Nc3 A) 4...Bb4 A1) 5.Qf3 a6 6.Nd5 Nd5 7.ed5 d6 8.Be2 0-0 9.Rb1 Bc5 10.a3 ab5–/+; A2) 5.Nf3 0-0 (5...a6 6.ba6 Ba6 7.Ba6 Bc3 8.Bb7 Ba1 9.Ba8 Na6 10.Bd5 c6=) 6.Rb1 Bc3 7.dc3 a6 8.Bg5 ab5 9.Ne5 Qe7 10.Qd4 Ra4-+; A3) 5.Bb2 d6 6.Bc4 a6 7.Nd5 Bc5 8.Qf3 ab5 9.Nf6 Qf6 10.Qf6 gf6+=; A4) 5.Nd5 Nd5 6.ed5 0-0 7.Qh5 a6 8.a3 ab5 9.Bb2 Bc5 10.Bb5 Bb7+=; A5) 5.Bc4 Bc3 6.dc3 a6 7.Nf3 ab5 8.Bb5 Qe7 9.Bd3 0-0 10.0-0 d6–/+; A6) 5.Bd3 0-0 (5...a6 6.Nd5 Nd5 7.ed5 ab5 8.Qg4 Bf8 9.Qe4 Bb7 10.Bb5 Bd6+=; 5...Bb7 6.Qf3 a6 7.Nge2 0-0 8.0-0 ab5 9.Bb5 c6 10.Bd3 d5+=) 6.a3 Bc3 7.dc3 a6 8.c4 Bb7 9.Bg5 h6 10.Bh4 ab5+=; B) 4...Bc5 5.Bb2 (5.Nf3 Ng4 6.d4 ed4 7.Na4 Bb4 8.Ke2 c5 9.c3 Qe7 10.Ng5 h6–/+) 5...d6 6.Nf3 a6 7.d4 ed4 8.Nd4 Qe7 9.Nb3 Bb4 10.f3 d5+=.

4.d3 a6+= 5.Nf3 (5.Bb2 ab5 (5...d6 6.a4 Be7 7.Nc3 0-0 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 c5=) 6.Be5 Nc6 7.Bf4 d5 8.e5 Ra4 9.Qd2 Nh5 10.Bg5 Be7–/+; 5.ba6 Bc5 (5...Nc6 6.Nf3 Bc5 7.Be2 d5 8.ed5 Nd5 9.0-0 0-0 10.Bb2 Re8+=; 5...d5 6.ed5 Qd5 7.Nf3 Na6 8.Bd2 Bc5 9.Nc3 Qd6 10.Nb5 Qe7+=; 5...Na6 6.Nf3 Bc5 7.c3 Qe7 8.Be2 0-0 9.0-0 d5 10.d4 de4+=; 5...Ba6 6.Nf3 Bc5 7.Be2 0-0 8.Bg5 Nc6 9.0-0 Qe7 10.Nbd2 h6+= –; 5...Be7 6.Nf3 d6 7.Nc3 0-0 8.d4 ed4 9.Qd4 Be6 10.Bb5 c6+= –0.31) 6.Nf3 Ng4 7.d4 ed4 8.h3 Nf6 9.e5 Qe7 10.Be2 Ne4+= –0.66) 5...Bb4 (5...Bc5 6.ba6 0-0 7.Be2+= (7.Bg5 h6 8.Bh4 d6 9.c3 Na6 10.Be2 g5+=) 7...d5 8.ed5 Qd5 9.0-0 Na6 10.Bb2 Re8+=; 5...d5 6.Ne5 de4 7.d4 Bd6 8.Be2 0-0 9.0-0 ab5 10.Bb5 Ba6+=) 6.Bd2 (6.c3 Bd6= 7.ba6 0-0 8.Be2 Ba6 9.0-0 Qe7 10.Be3 Nc6=) 6...Bd2 (6...Qe7 7.c3 Bc5 8.Be2 ab5 9.d4 Bd6 10.Bg5 ed4+=) 7.Qd2 (7.Nbd2 Qe7 8.a4 0-0 9.Be2 d5 10.0-0 Rd8+=) 7...d6 8.c4 (8.d4 Ne4 9.Qe3 Bb7 10.ba6 Na6+=) 8...h6 (8...Nbd7 9.Be2 Nc5 10.Qc2 0-0+=) 9.Nc3 (9.Be2 0-0 10.0-0 Bg4=) 9...a5 (9...ab5!? 10.cb5 c5+= –0.31 (10...Bg4+=)) 10.d4+= a4? (better is 10...Nbd7!?+=; 10...ed4+= 0.31) 11.de5+- Ne4? (better is 11...de5 12.Qd8 Kd8 13.Ne5 Be6+-) 12.Ne4 Bf5 (12...Bb7 13.Qf4 Qe7 14.Bd3 de5 15.Qe5 Qe5 16.Ne5+-) 13.Qf4 Be4 14.Qe4 c6 (14...Ra7 15.ed6 Kf8 16.dc7 Rc7 17.Be2+-) 15.bc6 (better is 15.ed6 Kf8 16.0-0-0 Qf6+-) 15...0-0 (15...f5 16.Qf5 Nc6 17.Qg6 Kf8 18.Rd1+-) 16.e6 (better is 16.Bd3 Re8 17.c7 Qc7 18.Qa8 de5 19.Qa4+-) 16...Qe7 17.Nd4 Na6 (17...fe6 18.Be2 (18.Qe6?! Qe6 19.Ne6 Re8+-) 18...e5 19.Nb5+-) 18.Nf5 (18.Bd3 fe6 19.Qh7 Kf7 20.Bg6 Kf6+-) 18...Qe6 (18...Qf6 19.0-0-0 fe6 20.Nd6 Qc3 21.Qc2 Qa1 22.Kd2 Rf2 23.Ke3 Qe5 24.Qe4 Qc5 25.Rd4 Rd8+-) 19.Qe6 fe6 20.Ne7 Kf7+/– 21.Nd5! ed5 22.cd5 Rfe8 23.Be2 Re5 24.Rd1 Nb4+= 25.f4 Nc2?? 26.Kd2+- Rd5 27.Kc2 Rc5 28.Kb1 Rc6 29.Bf3 Rc4 30.Ba8 Rf4 31.Rd6 Ke7 32.Rhd1 Rb4 33.Ka1 Rf4 34.Rd7 Ke6 35.R1d6 Ke5 36.Rb6 Rf1 37.Kb2 Rf4 38.Ka3 Kf5 39.Rg7 Rd4 40.Rf7 Ke5 41.Re7 Kf5 42.g3 Rd3 43.Kb4 Rd4 44.Kc3 Rd1 45.Be4 Kg5 46.Rg6 (46.Rg6 Kh5 47.Re5#) 1–0. Tiedemann,Joern (2020) – Witt,Monika, RSS7E easy–114, 2010.

4.d3 Bc5 A) 5.Nf3 Ng4 (5...Qe7 6.Bb2 Ng4 7.d4 ed4 8.Bd4 Qe4 9.Qe2 Bb7 10.Bc5 bc5+=; 5...0-0 6.c3 Re8 7.Be2 a6 8.0-0 ab5 9.d4 Bd6 10.de5 Be5+=; 5...a6 6.ba6 0-0 7.Be2 d5 8.ed5 Qd5 9.0-0 Na6 10.Bb2 Re8+=) 6.d4 ed4 7.Bc4 a6 8.0-0 ab5 9.Bb5 Qf6 10.Bg5 Qg6+=; B) 5.c3 Qe7 6.Qf3 a6 7.Be2 ab5 8.d4 Bd6 9.Bg5 b4 10.Bf6 gf6–/+; C) 5.Bb2 d6 (5...Qe7 6.Be2 a6 7.Nf3 d6 8.a4 0-0 9.0-0 Bd7 10.Nc3 c6+=) 6.c3 d5 7.ed5 Qd5 8.Nf3 0-0 9.c4 Qd6 10.Be5 Bf2+=; D) 5.f4 d5 6.ed5 Nd5 7.Qf3 ef4 8.Ne2 c6 9.d4 Be7 10.c4 Nb4+=; E) 5.Bg5 a6 6.ba6 h6 7.Bh4 Na6 8.c3 d5 9.f4 ef4 10.e5 Qe7=.

4.d3 d5 A) 5.Bb2 de4 (5...d4 6.Nf3 Bd6 7.c3 c5 8.bc6 dc3 9.Nc3 Nc6 10.d4 0-0=; 5...Bb4 6.Nd2 d4 7.a3 Ba5 8.Ngf3 Qe7 9.Qc1 Bg4 10.c3 Bf3+=; 5...Bb7 6.Be5 de4 7.de4 Qd1 8.Kd1 Ne4 9.Nh3 c5 10.f3 Nd7=) 6.Be5 a6 7.Nd2 Ng4 8.Bg3 e3 9.Qe2 Bd6 10.fe3 Bg3–/+; B) 5.ed5 Qd5 (5...a6 6.Nf3 Qd5 7.Qe2 Bd6 8.c4 Qe6 9.d4 ed4 10.Nd4 Qe2+=) 6.Nc3 Bb4 7.Qd2 Qc5 8.Bb2 a6 9.a3 Ba5 10.ba6 0-0 –/+.

4.d3 d6 5.Nc3 c6 (5...Be7 6.Nf3 a6 7.d4 ed4 8.Qd4 0-0 9.Bc4 c6 10.bc6 Nc6=; 5...Nbd7 6.Nf3 a6 7.d4 Be7 8.Bc4 ab5 9.Bb5 0-0 10.0-0 Ra5=; 5...a6 6.d4 ab5 7.Bb5 c6 8.de5 de5 9.Qd8 Kd8 10.Bd3 Nbd7=; 5...d5 6.ed5 Nd5 7.Bd2 Bb4 8.Nd5 Bd2 9.Kd2 Qd5 10.Qf3 c6=; 5...Bb7 6.Bg5 a6 7.d4 Be7 8.Bf6 Bf6 9.d5 0-0 10.Nf3 Be7=) 6.d4 ed4 7.Qd4 a6 8.Qa4 Bb7 9.ba6 Na6 10.Qd4 Nc5+=.

4.d3 Qe7 5.Nf3 a6 (5...c6 6.a4 a6 7.Ba3 d6 8.Be2 Qc7 9.0-0 Be7 10.Nbd2 0-0=; 5...Bb7 6.Bb2 d6 7.Be2 a6 8.a4 Qd7 9.Nc3 Be7 10.0-0 0-0=; 5...d6 6.Bg5 a6 7.Nc3 Qd8 8.d4 ed4 9.Qd4 Be7 10.e5 de5=) 6.Bb2 d6 7.a4 c6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 cb5=.

4.Bd3 A) 4...Bc5 A1) 5.Ba3 Ba3 6.Na3 a6 7.Nf3 Qe7 8.Nb1 ab5 9.Qe2 Bb7 10.Nh4 0-0–/+; A2) 5.Nc3 a6 6.Nf3 ab5 7.Bb5 c6 8.Be2 d6 9.d3 b5 10.a3 Qa5+=; A3) 5.Nf3 a6 6.Nc3 d6 7.Na4 Bb4 8.Rb1 Ba5 9.c4 ab5 10.cb5 0-0+=; A4) 5.Qe2 a6 6.ba6 0-0 7.Nf3 d6 8.Bc4 c6 9.0-0 Na6 10.a4 Nc7+=; A5) 5.Bb2 d6 6.Nf3 a6 7.a4 0-0 8.0-0 c6 9.Nc3 Qc7 10.Bc4 cb5+=; B) 4...d6 B1) 5.Nc3 a6 (5...Be7 6.Nf3 a6 7.0-0 0-0 8.Bb2 ab5 9.Bb5 c6 10.Be2 b5+=; 5...Bd7 6.Qe2 a6 7.ba6 Be7 8.Nf3 Qc8 9.Bc4 Na6 10.Rb1 0-0=; 5...Be6 6.Nf3 Be7 7.Be2 a6 8.d4 0-0 9.d5 Bd7 10.Rb1 ab5=) 6.Nf3 Be7 7.0-0 0-0 8.Bb2 ab5 9.Bb5 c6 10.Be2 b5+=; B2) 5.Ne2 a6 6.ba6 c6 7.0-0 Na6 8.Ba3 b5 9.Ng3 b4 10.Bb2 Nc5+=; B3) 5.Nf3 a6 (5...Be7 6.0-0 0-0 7.Nc3 a6 8.Bb2 ab5 9.Bb5 c6 10.Be2 b5+=; 5...Bg4 6.0-0 a6 7.ba6 Be7 8.Qe2 c6 9.a4 0-0 10.Nc3 Nh5=) 6.Nc3 Be7 7.0-0 0-0 8.Bb2 ab5 9.Bb5 c6 10.Be2 b5+=; C) 4...a6 C1) 5.Nf3 Bc5 6.Nc3 d6 7.Na4 Bb4 8.Rb1 Ba5 9.c4 ab5 10.cb5 0-0+=; C2) 5.ba6 Ba6 6.Ba6 Na6 7.Nf3 d5 8.ed5 e4 9.Qe2 Be7 10.Qb5 Kf8+=; C3) 5.Qe2 Bc5 6.ba6 d6 7.Nf3 c6 8.0-0 Na6 9.Ba6 Ra6 10.c3 Ra5+=; C4) 5.Nc3 ab5 6.Bb5 c6 7.Bd3 Bb4 8.Nf3 d6 9.0-0 0-0 10.Bb2 b5–/+; C5) 5.Bb2 d6 (5...ab5 6.Be5 Nc6 7.Bb2 Nb4 8.Qf3 c6 9.Ne2 Bc5 10.Bf6 Qf6=) 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.Nc3 Nc5 10.Qe2 Ne6+=; D) 4...Bd6 D1) 5.Bb2 Bb7 (5...a6 6.Nf3 Qe7 7.a4 0-0 8.0-0 Bb7 9.Re1 ab5 10.ab5 Ra1=; 5...Qe7 6.Nf3 a6 7.a4 0-0 8.0-0 Bb7 9.Nc3 Bc5 10.Qe2 Re8=) 6.Nf3 Qe7 7.Nc3 a6 8.a4 Bb4 9.0-0 d6 10.Re1 0-0=; D2) 5.Qe2 Bc5 (5...Bb7 6.Nf3 a6 7.Bb2 ab5 8.Ne5 Qe7 9.Ng4 Ng4 10.Qg4 Be5=; 5...a6 6.Bb2 ab5 7.Bb5 Bb7 8.Nc3 0-0 9.Nf3 c6 10.Bd3 Nh5+=) 6.Ba3 Ba3 7.Na3 a6 8.Nf3 Qe7 9.Nb1 d6 10.0-0 ab5+=; D3) 5.Nc3 a6 (5...Bb7 6.Qf3 a6 7.Nge2 ab5 8.Bb5 Na6 9.Rb1 Bc5 10.Qg3 0-0=; 5...c6 6.Nf3 a6 7.ba6 0-0 8.0-0 Ba6 9.Ba6 Na6 10.Re1 Qc7=; 5...0-0 6.Nf3 a6 7.0-0 ab5 8.Bb5 Bb4 9.Ne5 Bc3 10.dc3 d6=) 6.Bb2 Bb7 7.Qe2 0-0 8.Nf3 Nh5 9.g3 Nf6 10.0-0 Qe7=; D4) 5.Nf3 0-0 (5...Bb7 6.Bb2 Qe7 7.Nc3 a6 8.a4 0-0 9.0-0 Bc5 10.Qe2 Re8=; 5...a6 6.Bb2 Qe7 7.a4 0-0 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Bb7=) 6.Bb2 Bb7 7.0-0 Re8 8.Re1 a6 9.a4 Bc5 10.Ne5 d6=; E) 4...Bb4 E1) 5.a3 Bc5 (5...Bd6 6.Bb2 Bb7 7.Nf3 Qe7 8.Nc3 a6 9.a4 0-0 10.0-0 Bc5=; 5...Be7 6.Nf3 d6 7.0-0 a6 8.Nc3 0-0 9.ba6 Na6 10.Bb5 Bb7+=) 6.Nf3 d6 7.Nc3 a6 8.Na4 Nfd7 9.Qe2 ab5 10.Nc5 Nc5+=; E2) 5.Bb2 d6 6.f4 Nbd7 7.Qf3 a6 8.Ne2 ab5 9.a3 Bc5 10.Bb5 0-0+=; E3) 5.Ba3 Ba3 6.Na3 a6 7.Nf3 Qe7 8.Nb1 ab5 9.Qe2 Bb7 10.Nh4 0-0–/+; E4) 5.Qe2 0-0 (5...d6 6.Nf3 a6 7.0-0 0-0 8.ba6 Na6 9.c3 Ba5 10.Bc4 Nc5+=; 5...a6 6.Nf3 d6 7.c3 Bc5 8.ba6 c6 9.Bc4 b5 10.Bb3 Bg4+=) 6.Nf3 d6 7.c3 Bc5 8.Bc4 Re8 9.Ba3 d5 10.Bd5 Nd5+=; E5) 5.Nf3 Qe7 (5...d6 6.Bc4 a6 7.c3 Ba5 8.a4 0-0 9.Qc2 Bg4 10.Qd3 d5=; 5...Bc5 6.Nc3 d6 7.Na4 Nbd7 8.Qe2 Bb7 9.0-0 0-0 10.Rb1 Qc8=) 6.Bb2 d6 7.a3 Bc5 8.Nc3 a6 9.Na4 Nbd7 10.Qe2 ab5=; F) 4...Bb7 F1) 5.Bb2 Ne4 6.Qe2 Nc5 7.Qe5 Qe7 8.Bf1 Ne6 9.Ba3 d6 10.Qe3 Nd7+=; F2) 5.Nf3 d5 (5...Bd6 6.Bb2 Qe7 7.Nc3 a6 8.a4 0-0 9.0-0 Bc5 10.Qe2 Re8=; 5...Bc5 6.0-0 a6 7.Bb2 d6 8.Qe2 0-0 9.a4 Nh5 10.g3 Nf6+=; 5...Ne4 6.Qe2 Nc5 7.Qe5 Be7 8.Be2 0-0 9.d4 Bf3 10.Bf3 Bf6=) 6.Be2 de4 7.Ng5 Bc5 8.Bb2 Nfd7 9.Nh3 a6 10.a4 Bd4–/+; F3) 5.Qe2 Bc5 (5...Bd6 6.Nf3 a6 7.Bb2 ab5 8.Ne5 Qe7 9.Ng4 Ng4 10.Qg4 Be5=; 5...a6 6.Nf3 Bc5 7.0-0 ab5 8.Bb2 0-0 9.Ne5 Re8 10.Bb5 Be4=; 5...d6 6.Nf3 a6 7.0-0 Be7 8.Nc3 ab5 9.Bb5 c6 10.Bc4 b5+=; 5...Be7 6.Nf3 d6 7.0-0 a6 8.Nc3 ab5 9.Bb5 c6 10.Bc4 b5+=; 5...Bb4 6.Nf3 d6 7.c3 Bc5 8.Bc2 a6 9.0-0 0-0 10.d4 ed4+=) 6.Nf3 a6 7.Bb2 d6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nh5+=.

4.Qe2 Bc5 5.Bb2 d6 (5...Qe7 6.Nf3 d6 7.c3 Bb7 8.a3 d5 9.d4 de4 10.Ne5 Bd6=) 6.c3 a6 7.d4 ed4 8.cd4 Bb4 9.Bc3 Bc3 10.Nc3 0-0 +=.

4.Qf3 Bb7 A) 5.Qg3 d6 6.d3 a6 7.c4 Nbd7 8.Nf3 ab5 9.cb5 Qe7 10.Be2 d5–/+; B) 5.Nc3 a6 6.Qf5 d6 7.Rb1 ab5 8.Bb5 c6 9.Bc4 Bc8 10.Qg5 b5+=; C) 5.d3 a6 6.Qg3 d6 7.c4 Nbd7 8.Nf3 ab5 9.cb5 Qe7 10.Be2 d5–/+; D) 5.Qc3 Ne4 6.Qe5 Be7 7.Bb2 Nf6 8.Qg3 0-0 9.Be2 a6 10.Nf3 ab5–/+; E) 5.Qf5 Be4 6.Qe5 Be7 7.d3 Bb7 8.Bf4 Nd5 9.Nc3 Nf4 10.Qf4 0-0–/+; F) 5.Bd3 d5 6.Nc3 d4 7.Nce2 a6 8.Ng3 ab5 9.Bb5 c6 10.Bc4 Ba6+=.

3.a4 b6 4.c4 (4.Bb2 d6=) 4...g6 (4...Nf6 5.Bb2=) 5.Ra3 (5.Nc3 Nf6=) 5...Bg7 6.Nc3 (6.Nf3 Ne7=) 6...Bb7 (6...Ne7 7.a5=) 7.e4 Qh4 (7...Ne7 8.d3=) 8.g3 (8.Nf3 Qe7+=) 8...Qf6 (8...Qd8 9.Bg2=) 9.Nd5 (9.Nf3 a6=) 9...Qd6 10.f4 (10.a5 ba5 11.d3 Ne7=) 10...Bd5 11.cd5 (better is 11.fe5 Qe5 12.cd5=) 11...Nf6 (11...ef4 12.gf4 Qf4 13.Nf3=+) 12.fe5 (12.Bb2 ef4 13.e5 Qd5 14.ef6 Qh1 15.fg7+–) 12...Qe5= 13.Re3 Bh6 14.Nf3 Qa1 15.Ra3+/– Qb1 16.e5 Nd5+= 17.Bd3 Qb4 18.0-0 c4? 19.Be4+– Qc5 20.d4! Qc7?? 21.Bh6 Qb7 22.Ng5 a6 23.Nf7 Ke7 24.Nh8 d6 25.Rf7 (25...Kd8 26.Rb7+–) 1–0. Jolilein – crca108, mySchach.de, 2005.

3.a4 d5 4.Bb2 =+.

3.Bb2 a5 4.Be5+- d6 5.Bb2 a4 (5...Nf6 6.Nf3+-) 6.e3 Bd7 (6...Nf6 7.Bf6 Qf6 8.Nc3+-) 7.Nf3 (better 7.Bd3+-) 7...f6? (7...Nf6+-) 8.Be2 (8.Bc4 Ne7 9.e4 Bc8+-) 8...h5 (8...Be6 9.0-0+-) 9.Nh4 g5 (9...Bg4+-) 10.Bh5 Rh5 11.Qh5 Ke7 12.Ng6 Ke6 13.f4 gf4 (13...Bb5 14.Na3 Ba6 15.fg5 Qe8+-) 14.Nf4 Ke7 15.Qh7 Ke8 16.Qg6 Ke7 17.Nd5 Ke6 18.Qg8 Kf5 19.0-0 Ke4 20.Rf4 (20.d3) 1–0. GuestRCPG – Pjani, freechess.org, 2020.

3.Bb2 a6 4.a4 d5 5.Be5 Nf6 6.Nf3 Bd6 7.Bf6 Qf6 8.Nc3 Be6 9.e4 0-0 10.ba6 (10.ed5 Bh3 11.Qb1 Re8 12.Kd1 ab5 13.Nb5 Bg4+=) 10...Na6= 11.Ba6 ba6 12.ed5 Bg4 13.Kf1 Rfe8 14.Rb1 h5 (14...Qf4 15.d4=) 15.h3+= Bf5 16.Rb6 Qd8 17.Rc6 (17.Rb7+=) 17...g5 (better 17...Bf8!?=) 18.Ng5! Qg5 19.Rd6 Bc2 20.Qc2 Qe5 21.Rg6! Kf8 (21...fg6 22.Qg6 Pinning) 22.g3 fg6 23.Qg6 Rad8 (23...Red8 24.f4 Qd4 25.Qf5 (worse 25.Qh5 Qd2 26.Qh6 Kg8 27.Qe6 Kg7 28.Qe7 Kg8+/-) 25...Kg8 26.Rh2+- (26.Qh5?! Qd2 27.Qg6 Kh8 28.Qf6 Kg8+/-)) 24.Qh6 Kg8 25.Qa6 Rd6 (25...Qg5 26.Kg2+-) 26.Qc4 Rf6 27.Qc5 (27.Kg2 Qf5 28.d6 Kh7+/-) 27...h4 28.g4?? (28.d3 hg3 29.Ne4+=) 28… Rf3-+ (28...Rf3 29.g5 Rg3-+) 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Bb2 d5 4.Be5 Nf6 5.e3 a6 6.a4 Bd6 7.Bb2 a5 (7...0-0 8.Nf3=) 8.c4 b6 (8...0-0!?+=) 9.cd5+/- Bb7 10.Bc4 Nbd7 11.Nf3 (11.Nc3 Ne5 12.d3 0-0+-) 11...Qe7 (11...Bd5!? 12.Bd5 Nd5+/-) 12.0-0 0-0-0 13.Nc3 h5 (13...Ne5 14.d3+-) 14.d4 g5 Black intends h4 15.e4 (15.Rc1 g4 16.Nh4 cd4 17.Qd4 Be5+-) 15...g4 16.dc5 Nc5 17.Nd4 Qe5? (17...Nce4 18.Rc1 Bf4 19.Nc6 Bc6 20.Ne4 Ne4 21.Bh8 Bc1 22.Qc1+-) 18.g3 (18.f4!? gf3 19.Nf3 Qf4+-) 18...h4 19.Nf5 Rh5 20.Nd6 Rd6 21.Be2 hg3 22.fg3 Kb8 23.Bg4 Ng4 24.Qg4 Rdh6 25.Rf2 (25.Nd1!? Qe4 26.Qe4 Ne4+-) 25...Nd3 26.Nd1 Nb2 27.Nb2 Rh2 28.Rh2 Rh2 29.Nd1 (29.Kh2? Qb2 30.Kg1 Qa1 31.Kf2 Qa4 32.Qf4 Ka8-+) 29...Qa1 30.Kh2 Qa4 31.Qf4 Ka7 32.Nf2 Qb5 33.Qf7 a4 34.d6 a3 35.d7 Qg5 36.Qb3 Qe7 37.Qd3 a2 38.d8Q Qd8 39.Qd8 a1Q 40.Qd2 Qe5 41.Qf4 Qc3 42.e5 b5 43.e6 (43.g4 Bd5+/-) 43...Bc6 (better 43...Qc6!? 44.Qe3 Ka8=) 44.Qc7 (44.g4!?+-) 44...Ka6+/- 45.Qc8 Kb6 46.Qb8 (46.Qf8+/-) 46...Ka5 (46...Ka6!? 47.Qf8 Qe5=) 47.Kh3 (47.e7 Qf3 48.Qa7 Kb4 49.Qd4 Ka5 50.Qd8 Ka6 51.Qc8 Kb6 52.Qb8 Ka5 53.Qc7 Ka6 54.Qc8 Kb6 55.Qb8 Ka5=) 47...Qf6?? (better 47...b4+/-) 48.Qc7+- Kb4 49.Qc6 Qh6 (49...Qh8 50.Kg2 Qd8 51.Ne4+-) 50.Kg2 Qf8 51.Nd3 Ka5 (51...Kb3 52.Qb5 Kc3 53.Qc5 Qc5 54.Nc5+-) 52.Qc7 Ka6 53.Nc5 (53.Nc5 Qc5 54.Qc5 Ka5 55.e7 Ka4 56.e8Q Kb3 57.Qeb5 Ka2 58.Qa7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Bb2 Bd6 4.Nf3 Nf6 5.Ne5 Be5 (5...Bc7 6.Nf3+=) 6.Be5 a6 (6...0-0 7.Nc3+-) 7.a4 (7.Nc3 0-0+-) 7...ab5 (7...d6 8.Bf6 Qf6 9.Nc3+-) 8.ab5 (8.Nc3 0-0 9.Nb5 d5+-) 8...Ra1+= 9.Ba1 Qa5? (better 9...d5!?+-) 10.Bf6+- gf6 11.e3 d6 12.c4 (12.Bd3 Nd7+-) 12...Bf5 (12...Nd7!? 13.Qf3+-) 13.Nc3 Nd7 14.Be2 (14.f4 Nb6 15.Kf2 h5+-) 14...Ne5 (14...Nb6 15.0-0+-) 15.0-0 Nd3?? (15...Nd7+-) 16.Qc2 Nf2 (16...Bg6 17.Bd3 0-0+-) 17.Qf5 (17.Qf5 h5 18.Rf2+-) 1–0. GuestSHNL – GuestJBXJ, freechess.org, 2020.

3.c4 b6 4.Bb2 d6 5.e3 (5.Nc3 Bb7+=) 5...Nf6 (5...Bb7!?+=) 6.Qf3+- e4 7.Bf6 Qf6?? (better 7...ef3 8.Bd8 Kd8 9.Nf3 a6+-) 8.Qe4+- Be7 9.Nc3 Bf5 (9...d5 10.Qd5 Nc6 11.Qc6 Qc6 12.bc6 Bf6+-) 10.Qa8 0-0 11.Qa7 Nd7 12.Nf3 (12.Nge2 Qh6+-) 12...h6 (12...Qg6 13.h4+-) 13.Be2 Bg4 (13...Be6 14.0-0+-) 14.0-0 Ne5 (14...Qg6+-) 15.Nd5 Nf3 16.gf3 Qg5 17.Ne7 Kh8 18.fg4 1–0. GuestPCMQ – GuestMFTZ, freechess.org, 2020.

3.c4 g6 4.Bb2 Bg7 5.Nf3 d6 6.e3 Ne7 7.Be2 0-0 8.a4 e4 9.Bg7 ef3 10.Bf8 fe2 11.Qe2 Qf8 12.Nc3 Be6 13.0-0 Nd7 14.d3 d5 15.Rfc1 dc4 16.dc4 b6 (16...Ne5 17.f4 Bc4 18.Qc2=+) 17.Ne4 (17.Rd1 a6=) 17...f5 18.Nd2 Nf6 (18...a6 19.Qf3=+) 19.f3 (19.a5 Rd8=) 19...Rd8 (19...a5 20.Re1=+) 20.a5= Nc8 21.ab6 ab6 22.Ra3 Qd6 23.Nf1 g5 Black prepares f4 24.Ng3 (24.Rca1 g4=+) 24...f4 (24...Qd2 25.Qd2 Rd2 26.Nf1=+) 25.ef4 gf4 26.Nh1 Bf5 27.Nf2 Qd4 28.Rd1 Re8 29.Rd4 Re2 30.Rd8 Kf7 31.g4 fg3 32.hg3 Ne7 (32...Ke7 33.Rh8 h5 34.g4 Re1 35.Kg2 hg4 36.fg4 Ng4 37.Ng4 Bg4 38.Ra8=+) 33.Ra7 (better 33.g4 Be6 34.Ra4=+) 33...Kg6 (33...Be6 34.Rd6 Bc4 35.Rb6 Re1 36.Kh2 Bd5-/+) 34.g4 Bc2 35.Nh3 Re1 (35...Kf7 36.Rd6 Bb3 37.Ng5 Kg6 38.Nh7 Kh7 39.Rf6 Bc4 40.Rb6+-) 36.Kf2+/- Rh1? (better 36...Re5+/-) 37.Nf4+- Kg5 (37...Kf7 38.Nd5 Nfd5 39.cd5 Kf6+-) 38.Ne6 (38.Re7?! Kf4 39.Rf8 Rh2 40.Ke1 Rh6+-) 38...Kh4 39.Re7 Rh2 40.Ke3 Kg3 (40...Rg2 41.Rd6 Bb3 42.g5+-) 41.Rf7 (41.Rf8 Bb3 42.Rf6 Bc4+-) 41...Ng4 (41...Ne8 42.Nf4 Bb3 43.Re8 Bc4 44.Rf6+-) 42.fg4 Rh1 43.Rf3 (better 43.Kd2 Rh2 44.Kc3+-) 43...Kg2 (43...Kg4 44.Rf4 Kg3+-) 44.Rd2 Kg1 45.Rg3 Kf1 46.Rc2 (46.Rc2 Rg1 47.Rc1) 1-0. wgr069 (2240) - Manfredo64 (2340), Rated Blitz game, lichess.org, 2021.

3.e3 d5 4.Be2=.

3.e3 Nf6 4.c4 Be7 5.Qc2 (5.Nc3 a6=) 5...b6 (5...a6 6.Nc3=) 6.Nf3 d6 Prevents intrusion on e5 7.Nc3 (7.a4 a6 8.Ra3 Bb7=) 7...Bb7 8.Be2 h6 Consolidates g5 (8...a6 9.Rb1=) 9.0-0 Nh7 (9...e4 10.Ne1=) 10.Bd3 White threatens to win material: Bd3xh7 (10.d4 ed4 11.ed4 0-0+=) 10...Ng5 11.Nh4 (11.Ng5!? hg5 12.Be4 Be4 13.Qe4+/–) 11...Nh3= 12.gh3 Bh4 Black has a mate threat 13.Ne4 (13.Be4!? Be4 14.Ne4=) 13...f5 14.Ng3 Bg3 White king safety dropped (better is 14...g6!?+= looks like a viable alternative) 15.hg3= White has the pair of bishops 15...e4 Black threatens to win material: e4xd3 16.Be2 0-0 17.Bb2 Nd7 18.Qc3 White has a mate threat (18.f4 Nf6=) 18...Rf6 (18...Ne5 19.Rfe1=) 19.Qc2 (19.a4 Ne5=) 19...Rf8 20.h4 Ne5 21.Be5 de5 White has a new backward pawn: d2. Black has new doubled pawns: e4+e5 22.Qc3 Qf6 23.a4 a5 (better is 23...f4 24.ef4 ef4 25.Qf6 Rf6+=) 24.f3? (24.ba6!? Ra6 25.a5=) 24...ef3 (better is 24...Qg6 a shame that Black overlooked this excellent chance 25.Kh2 f4 26.ef4 ef4-+) 25.Bf3+= e4 Black gains space 26.Qf6 Rf6 27.Bg2 Rd8 28.Rad1 Rd3 An ideal square for the black rook. 29.Bh3 Bc8–/+ 30.Rf2 Be6 Black threatens to win material: Be6xc4 31.Rdf1 Bc4 32.Bf5 Rdd6 33.Rb1 g6 34.Be4 Rf2 35.Kf2 Rd2 36.Kg1 Kg7 37.Ra1 Re2 38.Ra3 Re1 39.Kf2 Rf1 40.Kg2 Rf8 41.Ra1 Rf6 42.Bc2 Bd5 43.e4= White threatens to win material: e4xd5 43...Ba8 44.Rd1 Re6 45.Kf3 g5 46.hg5+/– hg5 47.Rd8 g4?? 48.Ke3+- Be4 49.Be4 Kf6 50.Kf4 Ke7 51.Rb8 Rf6 52.Kg4 Re6 53.Bc6 c4 54.Rb6 c3 55.Rb7 Kd6 56.Rd7 Kc5 57.Rd5 Kb6 58.Rd3 c2 59.Rc3 Re2 60.Kf3 Rh2 61.Be4 (61.Be4 Rh8 62.Rc2+-) 1–0. Siepe,Hans Joachim – Lingk,Christoph, Sauerland Bezirksklasse, 2000.

3.e4 (--> 1.b4 c5 2.e4 e5 3.b5).

4.e3 d5 5.c4 d4 6.ed4 (6.Qc2 Nf6=) 6...ed4 7.Bd3 a6 (7...Bd6 8.Nf3=+) 8.a4 (8.Nf3 Bd6+=) 8...ab5 (8...Bd6 9.Nf3=) 9.ab5 (9.cb5!? Bd6 10.Nf3 Qe7 11.Be2+=) 9...Ra1=+ 10.Ba1 Qa5 11.Bb2 Nf6 12.Nf3 Bg4 (12...Bd6 13.0-0 0-0 14.Re1=+) 13.Qe2 (13.0-0 Bd6 14.Re1 Kd8+=) 13...Be7 (better 13...Kd8!? 14.0-0 Qa2=) 14.0-0+- Qd8 15.Re1 Be6 (15...Qd6 16.h3 Be6 17.Na3+-) 16.Ng5+- Qd7 (16...Qd6 17.g3+-) 17.Na3 (17.f4 0-0+-) 17...0-0+- 18.Ne6 fe6 (18...Qe6 19.Qe6 fe6 20.Re6+-) 19.Qe6 (19.g3 Re8+-) 19...Qe6 20.Re6 Re8 (20...Bd8!?+-) 21.Rb6+- 1–0. GuestSBVJ – GuestCYVG, freechess.org, 2020.

4.e4 Nf6 5.Bc4 d6 (worse 5...Ne4 6.Qe2 f5 7.f3+/-) 6.Nf3 (6.Qe2 Nbd7=) 6...g6 (better 6...Ne4!? 7.Qe2 f5=+) 7.Nc3 Bg7 8.0-0 0-0 9.a4 a6 10.Ng5 ab5 11.ab5 Ra1 12.Qa1 b6 (12...h6 13.Nf3=) 13.Qa2 (13.f4 Qe7+/-) 13...h6+= 14.Nf3 Nbd7 (better 14...Bg4!?+=) 15.Nh4+- Qb7? (better 15...d5 16.Nd5 Nd5 17.Bd5 Nf6 18.Be5 Qe5 19.Ng6 Qc7 20.Nf8 Nd5 21.Qd5 Kf8+/-) 16.Ng6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

(…) (---> 1.b4 e5 2.Bb2 d6 3.b5 c5).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c5).

4.e4 d6 5.Nf3 h6 6.Bc4 Bg4 (6...Be6 7.Qe2+-) 7.0-0 Nf6 8.Nc3 g5 9.a4 Nbd7 10.a5 Bg7 11.Bd5 (11.Qe2 0-0+-) 11...Rb8 (11...Nd5 12.Nd5 (worse 12.ed5 a6=) 12...Qd8 13.Qe2+=) 12.a6 b6 (12...Nd5 13.Nd5 (13.ed5?! 0-0=) 13...Qd8 14.ab7 Rb7 15.c4+-) 13.h3 Bh5 14.Qe2 0-0 15.Bc6 (15.Bb7 Rfd8+-) 15...Bg6 (15...Rfc8 16.Qe3+-) 16.d3 (16.Ra4 Nh5+-) 16...Rfd8 17.Nd5 (17.Qe3 Nf8+-) 17...Nd5 18.Bd5 (18.ed5 f5+-) 18...Kh8 (18...Nf8 19.c3+=) 19.Bc6 (19.c4 Nf8+-) 19...Nf8 20.c4 (20.Ra4 Ne6+-) 20...f6 (20...Ne6 21.Qe3+=) 21.Qc2 (21.g3 Bh5+-) 21...Be8 (21...Bh5 22.Qd1+-) 22.Bb7 (22.Be8 Re8 23.Nh2 Qd7+-) 22...Ne6 23.Bc3 (23.g3 Nd4 24.Nd4 cd4+-) 23...h5 (23...Bh5 24.Qd1+=) 24.Rfe1 Bf8 (24...Bd7 25.Ra4+-) 25.Bd2 (25.g3 h4+-) 25...Qg7 26.Be3 h4 27.Bd5 (27.Kh1 g4 28.Nh2 Nd4 29.Bd4 gh3 30.gh3 cd4+-) 27...Bd7 (27...Nc7 28.Nd2+=) 28.Nh2 (28.Qe2 Be7+-) 28...Nd4 29.Qd1 Qh6 30.Ra2 Be7 31.Ng4 Qg7 (31...Qg6 32.Bc1+-) 32.Bd2 Ne6 33.Rf1 (33.Ne3 Nd4+-) 33...Nc7 (33...Nf4 34.Bf4 gf4 35.Re1+=) 34.Bb7 Qf8 (34...Ne6 35.Ne3+-) 35.Qf3 (35.Ne3 Qf7+-) 35...Ne6 36.Ne3 Be8 (36...Nd4 37.Qd1+-) 37.Nf5 (37.Bc3 Nf4+-) 37...Nd4 38.Nd4 (38.Qg4 Nf5 39.ef5 Bf7+-) 38...cd4 39.Bd5 (39.Rb1 Kg7+-) 39...Rd7 40.Qg4 Rc7 41.g3 hg3 (41...Qh6 42.Qh4 Qh4 43.gh4+-) 42.fg3 Kg7?? (better 42...Qh6+-) 43.Bg5!+- Bg6 (43...fg5 44.Rf8 Pinning (44.Rf8 Deflection)) 44.Raf2 fg5 (44...Bd8 45.h4 Qh8 46.Bf6 Bf6 47.Rf6+-) 45.Rf8 Bf8 (45...Rf8 46.Rf8 Bf8 47.Qg5 Be7+-) 46.Qg5 Be7 (46...Re8 47.Rf6 Rf7 48.Rg6 Kh8 49.Rg8 Kh7 50.Qg6) 47.Rf7 (47.Rf7 Kh8 48.Qg6 Rc4 49.Rh7) 1–0. GuestNDSG – GuestGSRK, freechess.org, 2020.

4.e4 Nf6 5.Nc3 d6 6.Bc4 Bg4 7.Nf3 Nc6?? (better 7...a6+=) 8.bc6+- Rc8 (8...bc6 9.Rb1+-) 9.0-0 (9.cb7 Qb7 10.Qc1 Be7+-) 9...Rc6 (9...bc6 10.h3 Bh5 11.Rb1+-) 10.Bb5 Bf3 (10...Bd7 11.Bc6 Bc6 12.d3+-) 11.Qf3 (worse 11.gf3 Nh5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 Qc7 5.Nf3= d6 6.e3 (6.Nc3 Bf5=) 6...Be7 7.d3 (7.Nc3 Bf5=) 7...0-0 8.Be2 e4 (8...a6 9.Nc3=) 9.de4+= Ne4 10.0-0 Be6 11.Nbd2 d5 (11...Nd2 12.Qd2 Nd7 13.Qc2+=) 12.Ne4 (12.cd5!? Bd5 13.Ne4 Be4 14.Qa4+=) 12...de4= 13.Nd2 Rd8 14.Qc2 f5 (14...Bd6 15.Ne4 Bh2 16.Kh1=) 15.a4 (15.f3 Bg5 16.f4 Be7=) 15...Nd7 (15...Bd6 16.f4=) 16.a5 (16.f3 Bd6=) 16...Nf6 17.a6 b6 18.Rfd1 Rd7= 19.Nf1 Rad8 20.Rd7 Rd7 21.Rd1 Ng4? 22.Rd7 Qd7+/– 23.Qd2 Qd6 24.Qd6 Bd6 25.Nd2? Bh2–/+ 26.Kf1 Bd6 27.Ke1 Ne5 28.g3 Nd3 29.Bd3 ed3 30.f4 h6 31.Kf2 Kf7 32.Kf3 Kg6 33.e4= Bf8 34.Be5+/– Kh5? 35.Bb8+- g5 36.Ba7 fe4 37.Ke4 Kg4 38.Bb6 Bc8 39.a7 Bb7 40.Kd3 gf4 41.gf4 Kf4 42.Bd8 Ke5 43.Nb3 Kd6 44.Na5 Bg2 45.Nc6! Bf1 46.Kc3 Bg2 47.a8Q Bg7 48.Kb3 Bd4 49.Qb8 Ke6 50.Nd4 (50...Kf7 51.Qf4 Kg8 52.Ne6 h5 53.Qf8 Kh7 54.Qg7) 1–0. Starr,Albert – Lupton,Stephen, Spring TNM San Francisco, 2006.

4.Bb2 d6 5.Nc3 Be6 6.e3 Nbd7 7.Nf3 h6 8.d3 Be7 9.a4 a5 10.Be2 Nb6 11.0-0 Qc7 12.Nd2 d5 13.Nd5 Nbd5 14.cd5 Nd5 15.Nc4 Bf6 16.Bg4 Qd7 17.Bf3 Rd8 18.Na5 Nb4? (better 18...Qc7 19.Qe1 Rd7 20.Bd5 Rd5+/-) 19.Nb7+- Qd3 1-0. DEFFM – GuestTDWS, freechess.org, 2021.

4.Bb2 d6 5.e3 Be7 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 c5).

3.a4? d6 4.e3 Qf6 5.Ba3 e4 6.Bc5 Qa1 7.Bd4 Qa4 8.Bg7 f6 (8...Be6 9.Bh8 Nd7 10.Nc3+-) 9.Bh8 (better 9.Nc3 Qa3 10.Bh8+-) 9...Bg4 (9...Qa1+-) 10.Qg4 Ne7 11.Qg7 (better 11.Nc3 Qa1 12.Ke2 Nd7+-) 11...Nd7 (11...Qa1 12.Bc4 d5 13.Be2 Qb1 14.Bd1+-) 12.Qh7 (better 12.Nc3 Qc2 13.Be2+-) 12...Ne5 (12...Qa1 13.Qh5 Kf8+-) 13.Bf6 Qc2 14.Qe7 (14.Be7?! Qb1 15.Ke2 Qb5 16.Ke1 Qb1 17.Ke2 Qb5 18.Ke1 Qb1 19.Ke2 Qb5=) 1-0. TimC (2365) - domajo (2225), Rated Bullet game, lichess.org, 2015.

3.a4? Bf2 4.Kf2 Qh4 5.g3 Qd4 6.Kg2 Qa1 -+.

3.a4? Nf6?? 4.f3 (4.Nf3 d5=+) 4...d5–/+ 5.e3 d4 (better is 5...0-0–/+) 6.e4?? (6.Ba3 Bb6–/+) 6...Be6 (better is 6...d3 7.Ba3 Bg1-+) 7.c3 Nbd7 8.c4? Nh5 9.Ne2?? Bc4 10.d3 Be6 11.h4 Nf8 12.g4 Nf6 13.Bg5 h6 14.Bd2 Ng6 15.h5 Ne7 16.Qc1 Nh7?? 17.Qc5+- Qd6 18.Qd6 cd6 19.Bb4 Kd7 20.Ba5 b6 21.Bd2 Rac8 22.Bh3 Nf8 23.g5 hg5 24.Bg4 f6 25.Kf2 Bg4 26.fg4 Ne6 27.Rc1 Nc5 28.Ra3 Rc7 29.Bb4 Rhc8 30.Bc5 Rc5 31.Rc5 Rc5 32.Ra2 d5 33.Nd2 Ke6 34.Ng3 g6 35.h6+- Kf7 36.Ra1 (36...Rc8 37.Rh1+-) 1–0. riverborne – skoren, Caissa.com, 2004.

3.Bb2 a5 4.e3 f6 (4...d6!?=) 5.d4+/- ed4?? (better 5...Bb4 6.c3 Bd6+/-) 6.Qh5+- g6 7.Qc5 Nc6 (7...de3 8.Qe3 Kf7+-) 8.bc6 d6 (8...de3 9.cd7 Bd7 10.Qe3 Qe7 11.Nc3 Qe3 12.fe3+-) 9.cb7 Bb7 (9...dc5?? 10.ba8Q (10.bc8B?! Rc8 11.Nd2 Rb8=) 10...de3 11.fe3+-) 10.Qd4 Ra6 11.Nh3 (11.Nh3 Rb6 12.Bc3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Bb2 Bd4 4.Nc3 (4.Bd4 ed4 5.Nf3 a6 6.Nd4 ab5 7.Nb5 Nf6+=) 4...a6 (4...Nf6 5.e3 Bc3 6.Bc3= (worse 6.dc3 d6=+)) 5.a4 (5.e3 Bc3 6.Bc3 d6+=) 5...ab5 (5...d6 6.e3 Bc3 7.Bc3=) 6.ab5+= Ra1 7.Ba1 (7.Qa1 d6+=) 7...Bb6 (7...d6 8.Nf3 Bc3 9.Bc3=) 8.e3 (8.Nd5 d6+=) 8...Nf6 9.Na4 c5? (better 9...d6+=) 10.Nb6+- Qb6 11.Be5 Qa7? (better 11...d6 12.Bf6 gf6+-) 12.Qf3 0-0 (12...d5 13.Bf6 gf6 14.Qf6+- (14.Qd5?! Be6 15.Qe4 Qa1 16.Ke2 Qb1+-)) 13.Bf6 (13.Qg3!? Ne8 14.Bb8 Qa1 15.Ke2 Qa4+-) 13...gf6 14.Qf6 d5 15.b6 (15.Qg5!? Kh8 16.Qd5 Qa1 17.Ke2 Be6 18.Qc5 Rc8 19.Qd4 Qd4 20.ed4 Rc2+-) 15...Qa5 (15...Qa2 16.Qg5 Kh8 17.Bd3+-) 16.Qg5 Kh8 17.Qf6 Kg8 18.Nf3 Be6 (18...Nd7 19.Qg5 Kh8 20.Qd5 Qa1 21.Ke2 Qa6 22.Qd3 Qb6 23.g4+-) 19.Be2 (19.Qg5!? Kh8 20.Qe5 Kg8+-) 19...Nd7 20.Qg5 Kh8 21.0-0 Rg8 (21...Qb6 22.Qh6+-) 22.Qe7 Nb6? (22...h6+-) 23.Ng5 Rg5 (23...Qa8 24.Ne6 fe6 25.Rb1+-) 24.Qg5 Qd2 (24...Nd7+-) 25.Qh6 Qc2 (25...Kg8 26.Bd3 Nc4 27.Bh7 Kh8+-) 26.Qf8 1–0. DEFFM – GuestKHZr, freechess.org, 2019.

3.Bb2 Qh4 4.e3 d6 5.d4 d4 6.ed4 Bb4 (6...Qf6 7.Bc4= (worse 7.dc5 Qb2 8.Nd2 dc5=+)) 7.c3+= Qe4 8.Be2 Ba5 (8...Qg2? 9.Bf3 Qg5 10.Qe2 Kd8 11.cb4+-) 9.Nf3 h6 (9...Qg6 10.0-0+=) 10.0-0+/- Nf6 (10...Ne7 11.Re1+/-) 11.Nbd2 Qg6 12.Nc4 Bb6 13.Bd3 Qg4 (13...Qh5!?+/-) 14.a4+- (14.Nb6?! ab6 15.Re1 Kd8+/-) 14...a6 (better 14...a5+-) 15.a5 (15.Nb6?! cb6 16.Re1 Be6+-) 15...Ba7 16.Re1 Be6 17.b6 cb6 (17...0-0 18.Ne3 Qh5 19.ba7 Ra7 20.c4+-) 18.h3 (18.Nd6?! Kf8 19.c4 Qh5+-) 18...Qf4 (18...Qh5 19.ab6 0-0 20.ba7 Ra7 21.Nd6 Bd5+-) 19.g3 (19.Bc1 Qc1 20.Qc1 0-0 21.Re6 fe6 22.ab6 d5 23.ba7 Ra7+-) 19...Qf3 (19...b5 20.Nb6 Qf3 21.Qf3 (21.Na8?! Qd1 22.Rad1 Kd7=) 21...Bb6 22.d5+-) 20.Nd6 Kd7 21.Qf3 Kd6 (21...Nc6 22.Ba3 Bb8+-) 22.Qb7 Nc6 (22...Nbd7 23.Ba3 Nc5 24.ab6 Bb6 25.Bc5 Bc5 26.dc5 Kc5 27.Qc7 Kd5 28.Ra5) 23.Ba3 Kd5 24.Re5 1-0. DEFFM – GuestMMNP, freechess.org, 2019.

3.c3 Qf6 4.e3 d6 (4...d5 5.d4 ed4 6.cd4=) 5.g3 (5.d4 Bb6=) 5...c6 (5...Nd7 6.d4 Bb6 7.Nd2=+) 6.h3 (6.d4 Bb6=) 6...cb5 (6...d5 7.d4 ed4 8.cd4=+) 7.Bb5 (7.d4 Bb6=) 7...Nd7 (7...Bd7 8.a4=+) 8.a4 (8.d4!? Bb6 9.Nd2=) 8...a6 9.Bc4 (9.Bf1 e4=+) 9...Nb6 (9...Ne7!?–/+) 10.Bb3 Be6 (10...e4 11.a5 Nd7 12.d4 ed3 13.Qd3=+) 11.Be6 (11.d4 Bb3 12.Qb3 ed4 13.ed4 Bd4 14.cd4 Qd4 15.Nc3+-) 11...Qe6= (< 11...fe6 12.d4 Nd7 13.dc5 Nc5 14.Ba3+- (14.Qd6?? Ne4 15.Qd2 Nd2 16.Nd2 Qd8-+)) 12.Nf3 (12.a5 Nd7=) 12...h6 (12...e4 13.d4 ef3 14.dc5 dc5 15.Qf3=+) 13.Nh4 (13.d4!? ed4 14.a5 de3 15.ab6 ef2 16.Kf1=) 13...Nf6 (13...Qd5 14.f3 Qd3 15.Qe2=) 14.Rg1 (14.d4 ed4 15.cd4 Bb4 16.Bd2 Nbd5=+) 14...Nc4 (14...Rc8–/+) 15.Qb3 (better is 15.g4–/+) 15...b6?? (15...e4 16.Ba3-+) 16.a5 b5?? 17.Ba3?? Na3 18.Na3?? Qb3-+ 19.Nf5 0-0 20.Ne7 Kh8 21.Kf1 Ba3 22.Kg2 d5 23.Nf5 Bb2 24.Raf1 Qc2 25.g4 g6 26.Nh6 Qd2 27.Kh1 Kh7 28.g5 Ne4 29.h4 Nf2 30.Kg2 Ng4 31.Rf2 0–1. solidsteel – Fishman, Live Game Caissa's Web, 2005.

3.Nc3 b6 4.e3= Bb7 5.Qg4 Qf6 (5...Nf6 6.Qg5 d6 7.Nge2=) 6.Ne4+= Qg6 7.Ng5?? (7.Qg6!? hg6 8.Nc5 bc5 9.Bb2+=) 7...Nf6?? (better is 7...f6 8.h4 fg5 9.Qg5 Qg5 10.hg5 Kf8-+) 8.Qg3=+ Bd6 9.Bc4 0-0 10.Bf7 Rf7-+ 11.Nf7 Qf7 12.Nf3? e4 13.Qh3 ef3 14.gf3 Ne8 15.Bb2 Bf3 16.Rg1 g6 17.Rc1 a6 18.Rg5 ab5 19.Qh6 Ra2 20.Bc3 Be7 21.Rb5 Nc6 22.h4 Nf6 23.h5 Bh5 24.Rb2 Rb2 25.Bb2 Ng4 26.Qg7 Qg7 27.Bg7 Kg7 28.Ra1 Nh2 29.Ra8 0–1. bigsteel – como2, Caissa.com, 2004.

3.Nc3 d5 4.Bb2 =+.

3.c4?? e4?? 4.f3 (4.Nc3 Nf6=+) 4...Nf6 (4...Bg1 5.Rg1 ef3 6.gf3 Qh4 7.Rg3 Qh2 8.Rg2 Qh4 9.Rf2 Qc4 10.Bb2–/+) 5.Nh3 (5.Nc3!?=+) 5...d5–/+ 6.e3 Bh3 7.gh3 c6 (7...Ng4! 8.hg4 Qh4 9.Ke2-+) 8.fe4 (8.d4 Bf8–/+) 8...Ne4 (better is 8...de4 9.Nc3 Bb4–/+) 9.Bb2?? (better is 9.Qg4–/+) 9...Qh4-+ 10.Ke2 Qf2 (10...dc4 11.Qa4 Qf2 12.Kd1 Qf3 13.Kc2 Qh1 14.Qc4-+) 11.Kd3 Qf5 12.Ke2 dc4 13.bc6 (13.Qa4 Qf2 14.Kd1 Qf3 15.Kc2 Qh1 16.Qc4-+) 13…Qf2# 0–1. oddbwar – RAM1962 (1670), internet, 2007.

3.e3 f6 4.d4+/– Bd6 5.Bb2 (5.Nf3 e4 6.Nh4 g6+/– (6...Ne7 7.Qh5 g6 8.Qh6 c6 9.Qg7 Rg8 10.Qh7 cb5) 7.Bc4 Bb4 8.c3 d5 9.Bd5 Qd5 10.cb4 g5) 5...Qe7 (5...ed4 6.Bd4 Ne7 7.Nd2+/– (7.Nf3 a6 8.Nc3 Bb4 9.a3 Bc3 10.Bc3 ab5) 7...Nf5 8.Bc3 Be7 9.e4 Nd6 10.Qh5 g6; 5...a6 6.de5 Be5 7.Be5 fe5 8.Qh5 Kf8 9.Nf3 e4 10.Bc4 g6) 6.Nf3+- (6.Nc3 Bb4 7.Nf3 e4 8.Nd2 Bc3 9.Bc3 d5 10.Rb1 Qe6) 6...c6 (6...e4 7.Nfd2 f5 8.Nc3 Nf6 9.Bc4 Bb4 10.a3 Bc3) 7.Nc3 Bb4 8.Be2 (8.a3 Ba5 9.bc6 bc6 10.Be2 Na6) 8...e4 9.Nd2 f5 (9...Nh6 10.0-0 d5) 10.a3 Bd6 (10...Bc3!? 11.Bc3 d6 12.Rb1+/–) 11.Nc4 Nf6 12.d5 c5 (12...0-0 13.0-0+-) 13.b6 a6 14.Bh5 (worse is 14.Nd6 Qd6 15.Na4 a5+-) 14...g6 15.Be2 0-0 16.Qd2 a5?? (16...Re8+-) 17.Nb5 Ne8 Black plans f4 (17...Bh2 18.Rh2 d6 19.Nbd6+-) 18.Qc3 Qg7 (18...Rf6 19.Nbd6 Nd6 20.Qf6 Qf6 21.Bf6 Nc4 22.Bc4+-) 19.Qg7 Ng7 20.Nbd6 Na6 21.Na5 f4 22.Ne4 fe3 23.fe3 Nf5 24.Nc4 d6 25.g4 Ne7 26.Rd1 Bd7 27.Ncd6 Ba4 28.Nf6 Rf6 29.Bf6 Bc2 30.Rd2 Bb3 31.Be7 c4 32.Nc4 Nb8 33.Ne5 Ra6 34.Ba6 Na6 35.0-0 Nb8 36.Rf8 Kg7 37.Rb8 Ba4 38.Rf2 Bd1 39.Bf6 Kh6 40.Nf7# 1–0. Anonymous – cmvw, internet, 2011.

3.e3 Qg5 4.Nf3 Qf5 (4...Qe7 5.Bb2 d6 6.Be2=) 5.d4+= ed4 6.ed4 Qe4 (6...Be7 7.Bd3 Qe6 8.Be3+=) 7.Be2+/- Bd4? (better 7...Bb4 8.c3 Be7+/-) 8.Qd4+- (worse 8.Nd4 Qg2 9.Bf3 Qg6+-) 8...d5 (8...Qd4 9.Nd4 d6+-) 9.Qg7 Qc2 10.0-0 Qg6 (10...Be6 11.Qh8 f6 12.Nd4+-) 11.Qh8 Bh3 12.Nh4 Nd7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.e3 h6 4.Bb2 d6 5.d4 ed4 6.ed4 Qe7 7.Be2 Bb4 8.c3 Ba5 9.Nf3 f6 (9...Nf6 10.0-0+=) 10.0-0+/- Nd7? (10...Qf7!?+/-) 11.Re1 (11.Nh4!? Nf8 12.Bh5 Kd8+-) 11...Qf8 12.Bd3 Ne7 13.Nfd2 Nb6 (13...Qf7 14.Bc4 Qf8 15.a4+-) 14.Qb3 (better 14.a4 Nd7 15.Nc4+-) 14...Bd7? (better 14...Nd7+-) 15.Qa3 Bc3 16.Nc3 0-0-0 (16...Qf7+-) 17.Qa7 Be6 (17...Bg4+-) 18.Re6 (18.Re6 g6 19.Nc4 Nc4 20.Bc4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.e3 Nh6 4.d4 ed4 5.ed4 Bb4 (5...Be7 6.Nf3+=) 6.c3+= Qe7 (better 6...Be7!?+=) 7.Be2+- Ba5 8.Nf3 Ng4 (8...0-0 9.0-0+-) 9.0-0+- 0-0 10.Bd3 (10.Re1 Qd8+-) 10...d6 (10...Re8 11.Re1 Qd8 12.Re8 Qe8 13.Qa4+-) 11.Re1+- Qf6?? (better 11...Qd8+-) 12.Bg5 Qg6 (12...Qe6 13.Re6 fe6 14.Qa4+-) 13.Bg6 fg6 (13...hg6 14.Be7 Re8+-) 14.Qb3 Kh8 15.Qf7! Rf7 (15...Rf7 16.Re8 Mate attack) 16.Re8 (16.Re8 Rf8 17.Rf8) 1–0. GuestTCRW – GuestQVDN, freechess.org, 2020.

3.e4 d5 4.Bb2 Qf6 5.d4 Bd4 6.Bd4 ed4 7.Nf3 de4 8.Nd4 –/+.

3.e4 d6 4.Bb2 f5 5.Nc3 Nf6 6.d3 f4 (6...0-0 7.Nge2–/+) 7.Na4 Ng4 (7...Bb4 8.c3 Bg4+-) 8.Nc5+= dc5 9.h3 Nf6 (better is 9...Qh4!? 10.Qe2 Be6+=) 10.Be5+- 0-0 11.Ne2 Nfd7 (11...Nh5!?+/–) 12.Bf4+- Qf6 (12...a6 13.a4+-) 13.Be3 Ne5 14.Ng3 c6 15.Bc5 Rf7 16.Nf5 Bf5+= 17.ef5 Qf5 18.Be2 Nbd7 19.Be3+/– cb5 20.0-0 h5? 21.Bh5 g6 22.Be2 b6 23.d4 Nc4 24.c3 Nd6 25.Rb1 a6 26.Bg4 Qd5 27.Bf3 Ne4 28.Qc2 Ndf6 29.Bg5 Re8 30.Rfe1 Qg5 31.Be4 Rfe7 32.f3 Qg3 33.Re2 Nh5 34.Rbe1 Nf4+/– 35.Re3 Nh3 36.Kf1 Nf4 37.Qd2 Kg7 38.Bb7?? Kf6 39.Re7 Rh8+= 40.R7e6 Ne6 41.Re4 Rh1=+ 42.Ke2 Qg2 43.Kd3 Qf3 44.Re3?? Nf4 45.Kc2 Qb7 46.Qf2 g5 47.Re5 Qh7 48.Kb3 Qb1 49.Ka3 Rh3 50.Qb2 Qd1 51.Qb4 Kg6 52.Qb3 Qd3 53.Qg8 Kf6 54.Qg5 Kf7 55.Qf4 Kg7 56.Rg5 Kh7 57.Qf7 Kh8 58.Qg7 1–0. Long_Knights – Goof, ChessWorld.net, 2005.

3.e4 Qh4 4.Qe2 Nf6 5.Nc3 Bd4 6.Nf3 Qh5 7.Qd3 (7.Nd4 ed4 8.Qh5 Nh5+-) 7...Ng4? (better is 7...Bc5!?=) 8.Nd4+/– ed4 9.Qd4 0-0 10.h3 Nf6 11.Be2 Qg6 12.0-0 d6 13.Qe3 Re8 14.d3 d5 15.f3 (15.e5!?+/–) 15...Bh3+= 16.Rf2 Qg3 17.Qf4 Qf4 18.Bf4 Be6 19.Be5 Nbd7 20.Bf6 Nf6 21.e5 Nd7 22.f4 d4 (23.Ne4 f5=). pawndynasty – jsm, HCL–B1646 playchess.de, 2003.

3.Nf3 Bf2?? 4.Kf2+- Qf6 (4...e4 5.Bb2 Nf6+-) 5.Ke1 (better 5.e4+-) 5...e4+= 6.Ng1?? (better 6.Nc3 ef3 7.ef3+=) 6...Qa1-+ 7.Nc3 Nf6 8.e3 0-0 (better 8...d6-+) 9.d3?? (9.Nge2 d6-+) 9...c6 (better 9...Qc3 10.Qd2 Qa1-+) 10.Qd2 (10.Ne4 d5 11.Nf6 Qf6 12.bc6 Nc6-+) 10...a6 (better 10...d5 11.Nge2 cb5 12.Nb5-+) 11.de4 (11.b6 d6-+) 11...ab5 12.e5 b4 13.ef6 bc3 (13...Qc3?! 14.Qc3 bc3 15.fg7 Kg7 16.Bd3-+) 14.Qd1 g6 15.Bc4 (15.e4 d6 16.Bh6 Qd1 17.Kd1 Re8-+) 15...Qb1 (better 15...d5 16.Bd3 Ra2-+) 16.Ne2 (16.Bb3 d5 17.Ne2 Nd7-+) 16...Qb4 17.Qd4 Qa5 (better 17...d5!? 18.Bb3 Qd4 19.ed4-+ (19.Nd4?? c5-+)) 18.e4 (better 18.Qf4 Qf5 19.e4 Qf4 20.Bf4-+) 18...b5?? (18...Re8 19.Kf2-+) 19.Bb3 (better 19.Qe3 Qd8 20.Rf1 bc4 21.Qh6 Qf6 22.Rf6+-) 19...Na6 (19...Re8 20.Kf2 b4 21.Bh6-+) 20.Nc3 (20.Qe3 Nc7 21.h4=+) 20...Nb4?? (better 20...c5!? 21.Qe5 Bb7–/+) 21.Bh6 (21.Qd2 Na6 22.Ba3+-) 21...Re8–/+ 22.h4 (better 22.Bd2 d6! 23.Rf1–/+) 22...Na6 (22...Qa3 23.Kd2 d5+=) 23.h5= g5 24.Bg5 (better 24.Rh3 d5 25.Rg3 Re4 26.Qe4 de4 27.Rg5 Kh8 28.Bg7 Kg8 29.Bh6 Kh8 30.Bg7 Kg8 31.Bh6=) 24...c5?? (24...d6 25.Qe3 d5+-) 25.Qd5 (better 25.Qe3 d6 26.Bd5+-) 25...Qc3-+ 26.Kd1 (26.Bd2 Qg3 27.Kf1-+) 26...Rb8 (better 26...c4 27.Rh3 Bb7 28.Rc3 Bd5 29.Bc4 Be4-+) 27.Qf7 (27.Qf7 Kh8 28.Qe8) 1–0. pumpkin516 – btom2004, gameknot.com, 2019.

3.Nf3 Nf6 4.c3 0-0 (4...e4 5.d4 Be7=+ (5...ef3?! 6.dc5 Qe7 7.Be3=)) 5.Ne5= Ne4 (5...d5 6.d4 Bd6 7.Ba3=) 6.e3 (6.d4 Be7+=) 6...Qf6 (6...Qh4 7.Nd3+=) 7.Nf3 (7.Ng4 Qh4 8.g3 Qg5+=) 7...d5 8.Bd3 (8.d4 Bd6+=) 8...Bf5 (better 8...a6=) 9.Bb2 (better 9.Be2=) 9...d4?? (better 9...Nf2 10.Kf2 Bd3–/+) 10.cd4+- (worse 10.ed4 Ng5 11.Bf5 Re8 12.Ne5 Qf5+-) 10...Bb4 (10...Bb6 11.Qc2 Nd6 12.Bf5 Nf5 13.a4+-) 11.Bc3 (11.Qc2 Re8+-) 11...Bc3 (11...Bd6 12.Be4 Be4 13.d3+-) 12.dc3 (12.Nc3?! Nf2 13.Kf2 Bd3+-) 12...Nd7 (better 12...a6+-) 13.Nfd2?? (13.Qc2 Rfe8+-) 13...Nd2?? (better 13...Nf2 14.Kf2 Bd3 15.Qf3 Bb5 16.Qf6 Nf6= (worse 16...gf6 17.c4 Ba6 18.Nc3+-)) 14.Qd2+- (worse 14.Kd2 Bd3 15.Kd3 Qf2=+) 14...Bd3 15.Qd3 Rfe8 (15...Rfd8 16.0-0+-) 16.Na3 (16.0-0 Qe6+-) 16...Rad8 (16...Qd6 17.Nc2+-) 17.0-0 Re6 (17...c5 18.bc6! Qc6 19.c4+-) 18.c4 Ne5 (18...c5 19.bc6! Rc6 20.Rfd1+-) 19.Qe2 Ng6 20.c5 (better 20.Qh5!?+-) 20...Rd4+- 21.b6 (21.Rac1 a6+-) 21...Rd8 (better 21...cb6!? 22.cb6 Ra4+=) 22.ba7+- Ra8 (22...Ra6 23.Nb5+-) 23.Nb5 (23.Rab1 Ra6 24.Nb5 Qc6+-) 23...Rc6 24.f4 (better 24.Rac1+-) 24...Rc5= 25.Rad1 (25.Rfd1 Qe7=) 25...Qb6 (25...Qa6 26.Nd4 Qe2 27.Ne2 Ra7 28.Rd2=) 26.a4 (26.Rb1 Qa6+=) 26...c6= 27.Nd6 Qa7 (27...Ra7? 28.Nc8 Qc7 29.Na7+-) 28.Ra1 (28.f5!? Ne5 29.f6+=) 28...Rd5=+ 29.Nc4 Re8 Attacks the backward pawn on e3 (29...b5 30.Nb2=+) 30.a5 Re4 (better 30...Qa6 31.Qc2 Ne7=) 31.Qf3?? (better 31.f5 Nf4 32.Qc2=+) 31...Rc4-+ 32.g4 (32.Kh1 Ra5 33.Rad1 Nf8-+) 32...Rf4 33.Qg3 Rd3 (33...Rf1 34.Rf1 Ra5 35.Qf3-+) 34.Rf4 (34.Rae1 Rf1 35.Rf1-+) 34...Nf4 (better 34...Re3 35.Rf2 Rg3 36.hg3 Ne5-+) 35.Qf4 Re3 36.Kf1 (36.Kh1 b5-+) 36...Qa6 (36...Re8 37.Qd2-+) 37.Kg1 Re8 38.Rf1 (38.Qf5 Qa7 39.Qf2 c5-+) 38...f6 39.g5 (39.Qd2 Qa7 40.Kh1 Qc5-+) 39...Qa7 40.Rf2 Re1 (40...Qa5 41.gf6 Qa1 42.Kg2 Qf6 43.Qf6 gf6 44.Rf6-+) 41.Kg2 Qa5 42.Qb8? (42.gf6 Qe5 43.Qg4 Qe4 44.Qe4 Re4 45.fg7 Kg7 46.Kf3-+) 42...Kf7 43.Qb7 Kg6 44.h4 (44.Qb3 Qg5 45.Qg3-+) 44...Qd5 45.Rf3 Re2 46.Kg3 Qe5 47.Rf4 Re3 (47...Qe3 48.Rf3 Qg1 49.Kf4 fg5 50.hg5 Qg5) 48.Kg2 Qf4 (48...Qd5 49.Kf2 Qd2 50.Kg1 Qe1 51.Rf1 Qg3 52.Kh1 Qh4 53.Kg1 Qg4 54.Kh2 Rh3) 49.Qb1 (49.Qf7 Kf7 50.g6 Ke6 51.h5 Re2 52.Kh3 Rh2) 49...Re4 (49...Kh5 50.Qh7 Kg4 51.Qh5 Kh5 52.Kh1 Qf1 53.Kh2 Rh3) 50.gf6-+ gf6 51.Qh1 Re2 52.Kh3 Re3 (52...Qe3 53.Qf3 Qf3) 53.Kg2 (53.Qf3 Rf3 54.Kg2 Rg3 55.Kh1 Qh4) 53...Qg3 54.Kf1 Qe1 (54...Re1) 55.Kg2 Re2 (55...Qd2 56.Kf1 Re1) 56.Kf3 Rf2 57.Kg3 (57.Kg4 f5 58.Kh3 Qh1 59.Kg3 Qf3) 57...Rf1 (57...Qe3 58.Qf3 Qf3) 58.Kg2 (58.Kh3 Qe3 59.Kh2 Qf4 60.Kh3 Rh1 61.Kg2 Rh2 62.Kg1 Qf2) 58...Qf2 59.Kh3 Rh1 60.Kg4 Qf5 (60...Rh4) 61.Kg3 Rg1 62.Kh2 Qf2 63.Kh3 Qg3 0–1. scubadude – puttepop, gameknot.com, 2017.

3.Nh3 d5–/+ 4.e3 (4.Bb2 Bh3 5.gh3 Nd7–/+) 4...Nf6 (4...Bh3 5.gh3 Nf6 6.Rg1–/+) 5.Ng5 Nbd7 (5...e4 6.d4 Bd6 7.c4–/+) 6.h4 (6.Be2 h6 7.Nf3 e4=+) 6...h6 (6...0-0 7.d4 ed4 8.ed4 Bb4 9.Bd2 Qe7 10.Qe2–/+) 7.Nh3 (7.Nf3 0-0–/+) 7...0-0 (7...Ne4 8.d3 Bb4 9.Nd2–/+) 8.h5 (better is 8.g4=+) 8...Nh5?? (better is 8...Nb6–/+) 9.Qh5+- Nf6 (9...Re8 10.Bb2+-) 10.Qd1 Bd7 11.Be2 Qe8 12.Bb2 Bb5 13.Bf3 e4+/– 14.Bf6 ef3 15.Qf3 gf6 16.Qh5 Qe5+= 17.Qh6?? Qa1-+ 18.d3 Qb1 19.Ke2 Qh1 20.Qh4 Rfe8 21.Qg4 Kf8 22.Nf4 Rad8 23.Nh5 Bd7 24.Qg7= Ke7 25.Qf6 Kf8 26.Qh8 Ke7 27.Qe5?? Be6-+ 28.Qf6 Kd7 29.Ng7 Qg2 30.Ne6 Re6 31.Qf7 Kd6 32.Qf4 Kc6 33.d4 Bd6 34.Qf5 Rf8 (35.Qf3 Qf3 36.Kd2 Qf2 37.Kc3 Qe3 38.Kb2 Ba3 39.Kb1 Rf1#) 0–1. manofsteel2 – greenteajam, Live Game Caissa's Web, 2005.

3.Nh3 Qf6 4.e3 (4.Nc3 Ne7 5.Ne4 Qb6=) 4...d6 (4...d5 5.Ng1–/+) 5.Ng1 (5.Nc3 Bh3 6.gh3 Ne7=+) 5...e4 (5...Be6 6.Bb2=+) 6.c3 (6.Nc3 Qf5=) 6...Nh6 (6...Qg6 7.Ne2=+) 7.Qa4 (better is 7.d4 ed3 8.Bd3=+) 7...c6?? (better is 7...Bf5–/+) 8.bc6 (8.Qe4 Be6+/–) 8...bc6 (8...Nc6 9.Qe4 Be6 10.d4+=) 9.Qe4+/– Be6 10.Ba3 Ba3 11.Na3 0-0 12.Rb1 d5 13.Qb4 Nd7 14.Qd6 Nb8 15.Ne2 Ng4 16.Nf4 g5 17.h3 gf4 18.hg4 f3? 19.g3 Bg4?? 20.Rh4 Bf5 21.Qf6+- Bb1 22.Nb1 Nd7 23.Rg4# 1–0. solidsteel – Fishman, Live Game Caissa's Web, 2005.

4.Na3=+ d5 5.d4 (5.e3 Qe7 6.Nb1 Nf6=+) 5...ed4 (5...c5!? 6.b6 Qb6-+) 6.Qd4=+ Nf6 7.Qe5 Be6 8.b6 (8.Nf3!?=+) 8...ab6 9.Nb5 0-0 (better is 9...Na6!?–/+) 10.Nc7 Ra5 (10...Nc6 11.Ne6 Qe7 12.Qb2 fe6 13.Nf3=+) 11.Ne6= fe6 (11...Qe7 12.Nf3 Nbd7 13.Qc7 fe6 14.e3= (14.Qb7?? Qc5 15.Nd2 Rb8 16.Qb8 Nb8-+)) 12.Qe6+= Kh8 13.e3 d4 (better is 13...Re8 14.Qh3 Qc7+=) 14.e4?? (14.Rd1 Re8 15.Rd4+-) 14...Rc5 (better is 14...Ne4!? 15.Qe4 Re8–/+) 15.Bd3= Re8 16.Qh3 Ne4 17.Ne2 h6 18.0-0 Ng5 19.Qg4+= Nc6 20.f4 Ne4 21.f5 Nd2 22.Rf4 Qd7 23.Rd1 Nc4 24.Bc4 Rc4 25.Nd4 Nd4 26.Rdd4 Rd4? 27.Rd4+/– Qe7 28.Rd1 Qc5 29.Qd4?? Qc2 30.f6+/– Qg6 31.fg7 Qg7 32.Qb6 h5 33.Rd8?? Rd8?? 34.Qd8+/– Kh7 35.Qd1 h4 36.Qh5+- Kg8 37.Qh4 Qa1+= 38.Kf2 Qa2 39.Kf1 Qb1 40.Kf2 Qc2 41.Kf3 b6?? 42.Qd8+- Kg7 43.h4 Qf5 44.Kg3 Qe5 45.Kh3 Qe6 46.g4 Qe3 47.Kg2 Qe2 48.Kg3 Qe3 49.Kg2 Qe2 50.Kg3 Qe3 51.Kg2 Qe2 52.Kg3 Qe3 ½–½. IrishBouncer – andre2004, ChessWorld.net, 2005.

4.Na3=+ Nf6 5.Nc4 d6 6.a4 0-0 7.h3 (7.e3 Nbd7=+) 7...Be6 8.d3 (8.e3 a6=+) 8...Nbd7 9.g4 e4 (better 9...Nc5–/+) 10.de4?? (better 10.Ne3–/+) 10...Bc4-+ 11.Qd4 Be6 12.e3 Nc5 (12...c5 13.bc6 bc6 14.f3-+) 13.Ne2 (13.Bg2 c6 14.e5 Qa5 15.Kf1 Nfe4 16.Be4 Ne4 17.ed6 Rad8-+) 13...Nce4 14.Bg2 d5 15.f3 (15.0-0 c5 16.bc6 bc6-+) 15...Nd6 16.Nf4 Nc4 (16...Qe7 17.Rb1-+) 17.Ne6 (17.Bf1 Qe7-+) 17...fe6 18.Bf1 e5 (18...Qd6!? 19.Bc4 Qg3 20.Kd2 dc4 21.Qc4-+) 19.Qc3 Nd7 (19...Nd6!? 20.Qe5 Nf7 21.Qd4-+) 20.Bc4 dc4 21.Qc4 Kh8 22.Rd1 (22.0-0 Qg5 23.Rae1 Qh4-+) 22...Qe7 (22...Rf3 23.Ke2 Rf6 24.a5-+) 23.0-0 (23.Qc7 Qa3 24.Ke2 Nc5 25.Qe5 Rae8-+ (25...Na4?! 26.Rd7 Rg8 27.Kf2-+)) 23...Nf6 24.e4 (24.c3 a6-+) 24...b6 25.Rd3 Rad8 26.Rfd1 Rd3 27.Rd3 Rd8 (27...c5 28.bc6 Rc8 29.c3-+) 28.Rd8 Qd8 29.Qd3 (29.Qc3 Qd6-+) 29...Qd3 30.cd3 Nd7 31.Kf2 (31.f4 ef4 32.d4 Nf6-+) 31...Nc5 32.Ke3 Na4 33.d4 Nc3 34.Kd3 (34.de5 g5-+) 34...ed4 35.Kd4 Nb5 36.Kc4 (36.Kd3 g5 37.e5 a5-+) 36...c6 37.e5 (37.Kd3 g5-+) 37...Kg8 (37...g5 38.Kd3-+) 38.e6 (38.f4 Nd6 39.Kd4 Nf7-+) 38...Nd6 39.Kd4 Kf8 40.f4 g6 41.Ke5 White plans f5 41...Ke7 42.h4 (42.Kd4 Ke6 43.Kd3 c5-+) 42...a5 43.h5 a4 44.hg6 hg6 45.f5 (45.Kd4-+) 45...gf5 46.gf5 Nf5 (46...Nf5 47.Kf5 a3-+) 0–1. lindsey000 – appells, gameknot.com, 2017.

4.a4 Qh4 5.e3 d4 (5...Bg4!? 6.Nf3 Qh5=) 6.Nf3+= de3?? (better 6...Qf6+=) 7.Nh4+- ef2 8.Ke2 Bg4 9.Nf3 e4 (9...Nd7 10.d4 ed4 11.Bd4+-) 10.d4 (better 10.Bg7 Ne7 11.Bh8 Ng6+-) 10...ef3 (10...Bd6+-) 11.gf3 Bf3 12.Kf3 Bd6 13.Bc4 Nf6 14.Kf2 Ng4 (14...0-0+-) 15.Qg4 f5 16.Qg7 Rf8 17.Re1 Kd8 18.Ba3 Ba3 (18...c5 19.bc6 Bg3 20.hg3 bc6 21.Bd6 Rf7 22.Qf7 f4 23.Re8) 19.Na3 Nd7 (19...Re8 20.Qf6 Kd7 21.Qf7 Re7 22.Re7 Kc8 23.Qf8) 20.Qe7 Kc8 21.Qe8! Re8 (21...Re8 22.Re8 Mate attack) 22.Re8 1-0. BeepBeepImAJeep (2455) - NikolaSokol57, lichess.org, 2018.

4.Be5= f6 5.Bb2 (5.Bg3 Ne7+=) 5...Ne7 6.d4 Bd6 (6...Bb6 7.Nc3+=) 7.e3 (7.c4 Bb4 8.Nc3 Be6+/– (worse is 8...dc4 9.e4+-)) 7...0-0 (7...Be6 8.Nd2+=) 8.c4+= Qd7?? (better is 8...c5+=) 9.c5+- Nf5 (9...Bf4 10.ef4 Re8 11.Nc3+-) 10.cd6 Qd6 (10...Nd6 11.Nc3 Qf7+-) 11.Ba3 Qb6 (11...Qd8 12.Bf8 Qf8 13.Qb3+-) 12.Bf8 Kf8 13.Nf3 Bd7 (13...a6 14.Qa4+-) 14.Bd3 (14.Nc3 Qa5 15.Qd2 c6+-) 14...Nd6 (14...a6 15.Nc3 ab5 16.Nd5+-) 15.a4 g5 (15...c6 16.a5 Qd8+-) 16.a5 (16.a5 Qb5 17.Bb5 Nb5 18.Qc2+-) 1–0. Taulien,Hans_Juergen (2350) – Osswald,Heiner (2000), remoteschach.de, 2002.

4.Be5 Nf6 5.e3 0-0 6.Bb2 Bf5 7.Nf3 Nbd7 8.a4 c6 9.Be2 Qc7 10.0-0 Rae8 11.c4 Ne4 (11...dc4 12.bc6 Qc6 13.Bc4+=) 12.cd5+/- cd5 13.Nc3 Ne5 (better 13...Ndf6!?+/-) 14.Ne5 Qe5 15.d4 Nc3 16.de5 (16.dc5?! Nd1 17.Be5 Ne3 18.fe3 Re5+=; 16.Bc3?! Qf6 17.dc5 Qc3 18.Qd5 Be4+-) 16...Nd1 17.Rfd1 (17.Bd1?! Bd3+/-) 17...b6 (17...Rd8 18.Rac1 b6 19.Kf1+-) 18.Bd4 (18.Rd5 Be6 19.Rdd1 Rd8+-) 18...Be6 19.f4 g6 20.Bf3 Rc8 21.Bb2?? (21.Bc5 Rc5 22.Rd3 h6+-) 21...Rfd8?? (better 21...Be3 22.Kh1 Bf4=) 22.Rac1?? (better 22.Kf2+-) 22...Be3-+ 23.Kf1 Bc1 24.Bc1 (24.Rc1 Rc1 25.Bc1 Bf5-+) 24...Rc4 25.Ba3 (25.a5 ba5 26.Bd2 Rb8-+) 25...Ra4 26.Bd6 Ra2 (26...Rf4 27.Kf2-+) 27.h3 (27.Ke1 Rb2 28.Ra1 d4-+) 27...Rb2 28.Bd5 Rb5 29.Be6 fe6 30.Kf2 Kf7 (30...Rb2 31.Kf3-+) 31.Kf3 (31.Rc1 Rd7-+) 31...Rb3 32.Kg4 Rc8 33.g3 (33.Ra1 a5 34.Ra2-+) 33...Rcc3 34.Rg1 Rf3 (34...a5 35.h4-+) 35.h4 (35.Bc7 a5 36.Bd8 h5 37.Kh4 a4-+) 35...h5 36.Kg5 (36.Kh3-+) 36...Rg3 37.Rg3 Rg3 38.Kh6 Rg4 39.Bb8 Rf4 40.Ba7 Rh4 41.Bb6 Rg4 42.Bc7 Re4 43.Bd6 (43.Ba5 h4 44.Bd2 Re5 45.Bg5 h3 46.Kh7 Rg5 47.Kh6 Rh5) 43...Ke8 (43...h4 44.Bb8 h3 45.Kg5 h2 46.Bd6 h1Q 47.Bc5 Qh4) 44.Kg6 (44.Bc5 h4 45.Kg5 Re5 46.Kh4 g5 47.Kg3 Rc5-+) 44…Kd7 (44...Kd7 45.Kh5 Kc6-+) 0-1. Jimito100 (1945) - frans_brouwer (2000), Rated Bullet game, lichess.org, 2020.

4.Be5 Nf6 5.Nf3 Nh5 6.e3+- Bg4 7.Bb2 (7.h3 Be6+-) 7...0-0 8.Be2 c6 9.a4 Bf3 (9...Nf6 10.0-0+-) 10.Bf3 Nf6 11.0-0 d4 (11...Bd6 12.Be2+-) 12.ed4 (12.Qe2 Qd6+-) 12...Bd4+- 13.c3 Bb6 14.d4 Nd5 (14...a6 15.Ba3 Re8 16.Re1+-) 15.c4 Nf4 16.c5 (16.Re1 a6+-) 16...Bc7 17.Nc3 Qg5 (17...Re8 18.d5+-) 18.Bc1 (18.d5 Re8+-) 18...Nd7 (18...Qf6 19.Bf4 Bf4 20.g3+-) 19.Ne4 (better 19.g3!? Qg6 20.Bf4 Bf4 21.Bh5+-) 19...Qg6+- 20.Be3 Ne6 (20...Rfe8 21.Qb1 Nd5 22.Re1+-) 21.bc6 bc6 22.Ng3 Bf4? (better 22...Rad8!?+-) 23.Be4 (23.Bc6 Rad8 24.Be4 Qh6+-) 23...Qf6 (23...Qh6 24.Bc6 Rad8 25.Bd7 Rd7+-) 24.Nh5?? (better 24.Bc6 Rad8 25.Qg4+-) 24...Qg5?? (better 24...Bh2 25.Kh2 Qh4 26.Kg1 Qe4=) 25.Nf4+- Nf4 26.Bf4 (better 26.Bc6 Rad8 27.Qf3+-) 26...Qf4 27.Bc6 Rad8 28.Bd7 (28.Qc1!? Qh4+-) 28...Rd7+- 29.d5 Qf5 30.c6 Rd5 31.Qb3 Rc5 32.Rac1 Rc8 33.Qb7 (33.Qe3 Rc1 34.Rc1 Qa5+-) 33...Rc1 (better 33...R8c6 34.Qc6 Rc6 35.Rc6 g5+-) 34.Rc1+- h6 35.c7 (worse 35.Qa7 Qf4 36.Qc5 Qa4+-) 35...Qd7 36.Qa7 Qd2 37.Qc5 Qf4 38.a5 Kh7 (38...Qa4+-) 39.a6 f5 (39...Qe4 40.a7+-) 40.a7 Qa4 (40...Qe4+-) 41.Qf5 g6 (41...Kg8 42.Qc8 Kh7 43.Qf5 g6 44.Qf7 Kh8 45.c8Q Qe8 46.Qce8) 42.Qc8 (42.Qc8 Qd7 43.Qd7 Kg8 44.a8Q) 1–0. craig4000 – valla, ChessWorld.net, 2020.

4.Be5 Qh4 5.d4 Bb4 6.c3 Bd6?? (better 6...Bf8 7.Bc7 Qe7+-) 7.Bg7 Nh6 8.Bh8 Ng4 9.g3 Qg5 10.Nf3 Qf5 11.Bh3 Qh5 12.Bg2 Bf5 (12...Qg6 13.h3 Nf2 14.Kf2 Bg3 15.Kf1+-) 13.Qb3 c6 (13...Be4 14.h3 Nh6 15.c4+-) 14.bc6 bc6 (14...Nc6 15.h3 Ne3 16.fe3 Bg3 17.Kd1+-) 15.Qb7 Bb1 16.Qc8 Ke7 17.Rb1 Qf5 18.Qf5 (18.Qf5 Nd7 19.Rb7+-) 1-0. DEFFM – ANSBr, freechess.org, 2021.

4.a4 Nf6 5.Nf3 =+.

4.a4 Bg4 5.f3 (5.c3 e4=+) 5...Bh5 (5...Be6 6.e3=+) 6.g3 (6.e3 Nd7=) 6...Bg1 (better is 6...Nf6!?–/+) 7.Rg1= Nd7 (7...Nf6 8.Nc3=) 8.Rh1 (8.Bg2 Ngf6=) 8...Ngf6 9.h4 Qe7 (better is 9...Bg6=) 10.g4+/– Bg4 11.fg4 Ng4 12.e3 Qf6?? (better is 12...Ngf6+-) 13.Qg4 (13...c6 14.h5+-) 1–0. riverborne – OhMyGod, Live Game Caissa's Web, 2005.

4.c4 Nf6 5.e3 Bf5 6.Nf3 Nbd7 7.a4 0-0 8.Be2 c6 9.0-0 Re8 10.Nc3 Rc8 11.h3 h6 12.a5 d5 13.d4 Bf8 14.de5 Ne4 15.Ne4 de4 16.Nd4 Bh7 17.Bg4 Rc7 18.e6 Nc5 19.a6 ba6 20.e7 Be7 21.Nc6 Qd1 22.Ne7 Rce7 23.Rfd1 ab5 24.cb5 f5 25.Bd4 Nb3 26.Be2 Na1 27.Ra1 Bg6 28.Ba7 Bf7 29.Bd4 1–0. Ferrier,Roxanna – Zinner,Bernhard, ESC, 2002.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.d4 ed4 9.ed4 Bb4 10.c3 Ba5 11.Bd3 Nf6 12.Qe2 (12.Nf3 0-0 13.0-0 Re8=) 12...Qe7 (12...Be6 13.Nf3=) 13.Qe7 Ke7 14.Ne2 Re8 15.0-0 Kf8 16.Na3 d5 17.Nc2 Bg4 18.Ne3 Be2 19.Be2 Ne4 20.Rc1 Nd7 21.Rc2 g6 22.Kf1 (22.Bd3 f5=) 22...f5=+ 23.g3 Nb6 24.Kg2 Nc8 (24...cb5 25.Bb5 Rc8 26.c4 dc4 27.Bc4 (27.Nc4? Nd6-+) 27...Nc4 28.Rc4=) 25.c4= dc4 (25...Nb6!?=) 26.Nc4+= (worse 26.Rc4 cb5 27.Rc2 Ncd6=+) 26...Bc7 27.Ne3 Bb6 (better 27...Na7!?+=) 28.bc6+- bc6 29.Rc6 Ba7 (29...Ba5 30.Bb2+-) 30.Rc7 Bb6 (30...h6 31.h4 Bb8 32.Rh7+-) 31.Rh7 Ncd6 32.Nd5 Ng3? (32...Nf6 33.Rh8 Ng8+-) 33.Rh8 (33.Nb6?! Ne2 34.Nd7 Kg8 35.Nf6 Kf8 36.Ne8 Ne8+-; 33.fg3?! Re2 34.Kf3 Ra2 35.Nb6 Ra1 36.Nd7 Kg8 37.Nf6 Kf8+-; 33.Kg3?! Re2 34.Nb6 Ne4 35.Kf4 Rf2 36.Ke5 Ra2 37.Rh8 Ke7 38.Nd5 Kf7 39.Rh7 Kg8+-; worse 33.hg3 Re2 34.Nb6 Ne4+-) 33...Kf7 34.Re8 (34.Re8 Ke8 35.hg3+- (35.Nb6?! Ne2 36.h4 Nf4 37.Kf3 Nd3+/-); 34.Nb6?! Ne2 35.Rh7 Kg8+/-; 34.fg3?! Re2 35.Kf3 Ra2 36.Nb6 Ra1+/-; 34.Kg3?! Re2 35.Nb6 Ne4 36.Kf4 Rf2 37.Ke5 Ra2+-; 34.hg3?! Rh8 35.Nb6 Rb8+-) 1-0. onur604 (2320) - RomaninDelNorte (2160), Casual Rapid game, lichess.org, 2021.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 c6 9.d4 ed4 10.ed4 Bb6 11.Be2 Qe7 (11...0-0 12.0-0=) 12.0-0 0-0 13.Nbd2 Bg4 14.Bd3 Re8 15.Qb1 Qc7 16.bc6 Nc6 (16...bc6 17.Re1=) 17.c4+= Ba5 18.d5 Nb4 (18...Bd2!? 19.Nd2 Ne5+=) 19.Bf6+- Nd3 20.Qd3 Bd2? (better 20...gf6 21.Ra1 Bb4+-) 21.Nd2+- (21.Qd2?! gf6 22.Qf4 Bf3 23.Qf3 f5+-) 21...gf6 22.Qg3 (22.Qg3 f5 23.h3+-) 1–0. onur604 (2320) – ChrisConB1 (2100), lichess.org, 2020.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 Bg4 9.h3 Bh5 10.Be2 Bg6 (10...Nbd7 11.d4 Bb4 12.Bc3 Bc3 13.Nc3=) 11.Nh4 Nbd7 12.d4 (12.Ng6 fg6 13.d4 ed4 14.ed4 Bb6+=) 12...Bb4 13.c3 Ba5 14.Ng6 hg6 15.0-0 Nd5? (better 15...e4+=) 16.de5+- N5b6 17.ed6 cd6 (17...Rh4 18.Nd2+-) 18.Qd6 Qe7 19.Qe7 Ke7 20.c4 Nc5 (20...Rc8 21.Rc1+-) 21.Bg7 Rh7 (21...Ra8 22.Bd4 Nbd7 23.Bf3+-) 22.Bd4 Nbd7 23.f3 (23.Bc3!? Bc3 24.Nc3 f5+-) 23...b6 24.Rd1 Nb3 25.Bb2 Rh8 (25...Nbc5+-) 26.Bh8 (26.Bh8 Ndc5 27.Nc3+-) 1-0. GuestLYRF – GuestQBKC, freechess.org, 2020.

4.e3 a6 5.a4 ab5 6.Bb5 Bd7 7.Qf3 c6 8.Be2 Nf6 9.d4 Bb4 (better is 9...Qb6!? 10.Bc3 ed4 11.ed4 Bd4–/+) 10.c3= ed4?? (better is 10...Ba5 11.Qg3 ed4 12.ed4 Bf5 13.Qe3 Be6+=) 11.cb4+- Bg4 12.Qg3 Be2 13.Ne2 (13.Ne2 0-0 14.Nd4+-) 1–0. Bobu,Adrian (2210) – Matei,Viviana, Revelion op Romania, 1999.

4.e3 a6 5.a4 Bd7 6.d4 ed4 7.ed4 Qf6 8.Nf3 (worse 8.dc5 Qb2 9.Nd2 ab5 10.cd6 cd6-/+) 8...ab5 9.ab5 Ra1 10.Ba1 Bb4 (10...Bb6 11.Bd3=) 11.c3+= Ba5 12.Nbd2 Ne7 13.Bd3 (13.Nc4 b6+=) 13...g6 (better 13...Qe6!? 14.Kf1 Nd5=) 14.0-0+/- 0-0 15.c4 (better 15.Qa4 b6 16.Nc4+/-) 15...c5?? (better 15...d5+=) 16.dc5+- Bc3 (16...Qf4 17.Ne4 f6 18.cd6+- (worse 18.Nd6 Bb4+-)) 17.cd6 (17.Ne4 Ba1 18.Nf6 Bf6 19.cd6 Nc8+-) 17...Nf5 (17...Ba1 18.Ne4 Qe6 19.Qa1+-) 18.Bc3 (better 18.Ne4 Ba1 19.Nf6 Bf6 20.Bf5 Bf5+-) 18...Qc3 19.Ne4 Qb2 (19...Qg7 20.Qa1+-) 20.Qa4 (better 20.Qa1 Qg7 21.c5+-) 20...Kg7 (20...Nd4 21.Nd4 Qd4+-) 21.Rb1 Qb1 22.Bb1 Re8 (22...Be6 23.Qa1 f6 24.Qa7+-) 23.Qa1 Kf8 24.Nf6 (24.Qh8) 24...Re2 25.Nh7 Kg8 26.Nf6 Kf8 27.Nd7 Nd7 28.Bf5 (28.Bf5 Kg8 29.Bd7+-; 28.Qh8) 1-0. GuestPLHL – GuestNQYL, freechess.org, 2020.

4.e3 a6 5.d4 ed4 6.ed4 Qe7 7.Qe2 Bb6 8.Qe7 Ne7 9.d5 (9.Nd2!?=+) 9...0-0 10.c4 (10.Nc3 Ba5–/+) 10...ab5 11.cb5 Nd5 12.Be2 (12.Nc3 Re8 13.Be2 Ba5-+) 12...Re8 (better is 12...Nb4 13.Nc3 Nc2 14.Kd2 Na1 15.Nf3-+) 13.Nf3? (13.Kf1 Nf4-+) 13...Ba5 (13...Nf4 14.Kd1 Re2 15.Bc1-+) 14.Nbd2? (better is 14.Kf1-+) 14...Nf4 15.Ng1 (15.Kd1 Re2 16.Re1 Re1 17.Ne1 Be6-+) 15...Ng2 (15...Nd3 16.Kf1 Nb2 17.Ngf3-+) 16.Kf1 (16.Kd1-+) 16...Nf4 17.Nc4 (17.Bf3 Bf5 18.Ne4 Be4 19.Be4 Re4 20.Nf3-+) 17...Bb4 (17...Re2!? 18.Rb1 Re4 19.Na5 Ra5 20.f3-+) 18.a3 (18.Ne3 Bd7-+) 18...Bc5 (better is 18...Re2 19.Rc1 Rb2 20.Nb2 Ba3 21.Rc4-+) 19.Re1 Nd7 (better is 19...Be6 20.Ne3 Nd7-+ (20...Ba3?! 21.Ra1 Bb2 22.Ra8-+)) 20.Bf3 (20.Bc1 Ne2 21.Re2 Re2 22.Ke2-+) 20...Re1 21.Ke1 Nb6 (better is 21...Ra4-+) 22.Nb6 Bb6 (better is 22...cb6 23.Be4 d5-+) 23.Ne2?? (23.Kd2-+) 23...Nd3 24.Kf1 Nb2 25.Kg2 Ra3 26.Rb1 (26.Nf4 Kf8-+) 26...Nd3 27.Be4 Nf2 28.Bf3 Nd3 (better is 28...Bh3 29.Kg3-+) 29.Ng3 Nf4 30.Kf1 Bh3 31.Ke1 Rf3 32.Rb4 Ba5 33.Kd1 Bb4 34.Kc2 Rc3 35.Kb2 Nd3 36.Kb1 Rc1 37.Ka2 Be6 0–1. MasterofDisaster – antro, Live Game Caissa's Web, 2004.

4.e3 Bb6 5.a4 a6 6.d4 ed4 7.ed4 (7.a5 Ba7 8.Nf3 Nf6 (8...de3? 9.Bg7 ef2 10.Kd2+-) 9.Nd4 0-0=) 7...Nf6 (7...Qe7 8.Qe2=) 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 0-0 11.Be2 Re8 12.0-0 c6 13.c4 cb5 14.cb5 d5 15.Bd3 Bg4 16.Nbd2 Nbd7 17.Qc2 Nf8 18.Ne5 Qd6 (18...Bc8 19.Re1=) 19.Ng4+= Ng4 20.Nf3 Bc7 21.Rc1 Nh2 22.Ne5 (22.Ne5 Bb8 23.Qd2+=; worse 22.Qc7 Nf3 23.gf3 Re1 24.Kg2 Qc7 25.Rc7 Ra1=+) 1–0. onur604 (2320) – Guy99 (2150), lichess.org, 2020.

4.e3 Bb6 5.Nc3 Nf6 A) 6.Nf3 a6 7.Na4 (7.a4 0-0 8.Bc4 e4 9.Nd4 c5 10.bc6 Nc6 11.Nc6) 7...Ba5 8.Nc3 ab5 9.Bb5 Bd7 10.a4 (10.Bc4 0-0 11.0-0) 10...Nc6 (10...0-0 11.0-0) 11.0-0; B) 6.Be2 a6 7.a4 0-0 8.Nf3 ab5 9.ab5 Ra1 10.Qa1 Bf5 11.d3; C) 6.Na4 C1) 6...0-0 7.Nf3 Ba5 8.Bc3 Bc3 9.Nc3 Nbd7 10.Be2 a6 11.ba6; C2) 6...Nbd7 7.Nf3 (7.Bc4 0-0 8.Nf3 Nc5 9.Nc5 Bc5 10.0-0 e4 11.Nd4) 7...0-0 8.Bc4 Nc5 9.Nc5 Bc5 10.0-0 e4 11.Nd4; C3) 6...Ba5 7.Bd3 (7.Bc3 Bc3 8.Nc3 Nbd7 9.Nf3 0-0 10.Be2 a6 11.ba6) 7...a6 8.Nf3 ab5 9.Bb5 Nc6 10.0-0 0-0 11.Qe2; D) 6.a4 D1) 6...a5 7.Nf3 (7.Be2 0-0 8.Nf3 Bf5 9.0-0 Nbd7 10.h3 Qe7 11.d4) 7...0-0 8.Be2 Bf5 9.0-0 Nbd7 10.Bc4 (10.h3 Qe7 11.d4) 10...e4 11.Nd4; D2) 6...a6 7.Nf3 0-0 (7...ab5 8.ab5 Ra1 9.Qa1 Bf5 10.Na4 Nbd7 11.Bd3) 8.Be2 (8.Ng5 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.Na4) 8...ab5 9.ab5 Ra1 10.Qa1 Bf5 11.d3; D3) 6...Nbd7 7.Nf3 (7.Be2 e4 8.f3 0-0 9.a5 Bc5 10.fe4 Bb4 11.Nf3) 7...0-0 8.Be2 e4 9.Nd4 Ne5 10.0-0 (10.a5 Bc5 11.0-0) 10...d5 (10...Qe7 11.a5) 11.a5; D4) 6...h6 7.Nf3 0-0 8.Be2 Nbd7 9.0-0 e4 10.Nd4 Ne5 11.f4; D5) 6...0-0 7.Nf3 (7.a5 Bc5 8.Nf3 a6 9.Na4 Bb4 10.Nc3 Bd7 11.ba6) 7...a5 (7...Ba5 8.Be2 Bf5 9.0-0 Nbd7 10.d4 Bc3 11.Bc3) 8.Be2 Bf5 9.0-0 Nbd7 (9...h6 10.Bc4 Nbd7 11.Qe2) 10.Bc4 e4 11.Nd4.

4.e3 Bb6 5.c4 Ne7 (5...Nf6 6.Nc3 (6.Be2 a6 7.Nc3 0-0 8.Nf3 Bf5 9.0-0 ab5 10.cb5 Nbd7) 6...Bf5 7.Qf3 Qc8 8.Nh3 h6 9.Nd5 Nd5 10.cd5 0-0; 5...Nd7 A) 6.Nf3 Ngf6 (6...Nc5 7.Be2 Nf6 8.Nc3 0-0 9.0-0 Qe7 10.d4 ed4) 7.Be2 Nc5 8.Nc3 0-0 9.0-0 a6 10.d4 ed4; B) 6.Be2 Nc5 (6...Ngf6 7.Nf3 Qe7 8.Nc3 0-0 9.d4 a6 10.0-0 ab5; 6...a6 7.Nc3 Ngf6 8.Nf3 ab5 9.cb5 e4 10.Nd4 0-0; 6...Qe7 7.Nf3 Ngf6 8.Nc3 e4 9.Nd4 Ne5 10.0-0 0-0) 7.Nf3 Nf6 8.Nc3 0-0 9.0-0 Bd7 10.Qc2 Re8; C) 6.Nc3 Ngf6 7.Nf3 0-0 8.Be2 Nc5 9.0-0 Bd7 10.Qc2 Re8) 6.Be2 (6.Nc3 Nd7 (6...0-0 7.Nf3 Bf5 8.Be2 Nd7 9.e4 Bg6 10.0-0 Nc5) 7.Nf3 0-0 8.Be2 Nf6 9.0-0 Nf5 10.Qc2 Bd7; 6.Nf3 0-0 (6...Bf5 7.Nc3 0-0 8.Be2 Nd7 9.0-0 a6 10.e4 Be6; 6...a6 7.Nc3 Nd7 8.Na4 0-0 9.Nb6 Nb6 10.ba6 ba6) 7.Nc3 Bf5 8.Be2 a6 9.0-0 Nd7 10.e4 Be6) 6...0-0 (6...Bf5 7.Nc3 0-0 8.Nf3 a6 9.0-0 Nd7 10.e4 Be6; 6...a6 7.Nf3 ab5 8.cb5 0-0 9.Nc3 Bf5 10.e4 Be6) 7.Nc3 f5 (7...a6 8.Nf3 Bf5 9.0-0 Nd7 10.e4 Be6) 8.Nf3 (8.Qb3 Be6 9.Nf3 Nd7 10.0-0 h6) 8...c6 (8...e4 9.Ng5 h6 10.Qb3 Bc5) 9.a4 (9.c5 Bc5 10.Qb3 Kh8=; 9.Qb3 c5 10.0-0 e4) 9...Ng6 (9...e4 10.Ng5= (10.Nd4 c5) 10...Ng6) 10.a5 (10.0-0 Be6=) 10...Ba5 11.Qb3 (11.0-0 a6=) 11...Be6 (11...e4 12.bc6 bc6 13.c5 Kh8 14.Nd4 dc5 15.Ne6 Be6 16.Qe6=) 12.bc6 bc6 13.Qb7 (13.h4 h6=) 13...Qb6 14.Qb6 Bb6 (14...ab6 15.Ng5 Bf7 16.g4=) 15.Na4 (15.Ng5!? Bd7 16.c5 Bc5 17.Bc4 Kh8 18.Na4+=) 15...Nd7 16.Ng5 Bf7 17.h4 Bd8 18.Nf7 Kf7 19.h5 Ne7 20.g4 c5 (20...fg4 21.Bg4 Nf6 22.Bf3=) 21.gf5 Nf5 22.Bg4 Ke7 23.Nc3 Nh6 (23...a5!?+=) 24.Nd5+/– 24...Ke8 25.Bh3 (25.Be6 Nf6+/–) 25...Nb6 (25...Nf6!?+=) 26.Nb6+/– 26...Bb6 27.Rg1 Rf7 28.Be6 Re7 29.Bd5 Rb8 30.Bc3 Kf8 31.Rg3 (31.f4 Nf7+/–) 31...Ng8 32.Ke2 (32.Rf3 Nf6+/–) 32...Nf6= 33.Rf3 h6 (33...Ke8 34.Bc6 Kf7 35.Rf5=) 34.Rg1+/– Ke8?? (better is 34...Ree8+/–) 35.Rf6+-! gf6 36.Rg8 Kd7 37.Rb8 Re8 38.Re8 (better is 38.Bc6! and White has it in the bag 38...Kc6 39.Re8 Kd7+-) 38...Ke8 39.Kf3 Kf8 (39...a5 doesn't get the bull off the ice 40.Ke4 a4 41.Bc6 Kf7 42.Ba4+-) 40.Kg4 Kg7 41.Kf5 a5 42.Bc6 Bc7 (42...Kf7 doesn't change anything anymore 43.Bb2+-) 43.Ke6 Bb8 (43...Kf8 cannot change destiny 44.Kf6 Bd8 45.Ke6+-) 44.Ba5 +-. Hoelldorfer,August – Roettger,Franz, Bayern–ch Seniors, 1996.

4.e3 Bb6 5.Nf3 Nf6 A) 6.Na3 A1) 6...Nbd7 7.Nc4 (7.Be2 Nc5 8.Nc4 Na4 9.Rb1 0-0 10.0-0 Nd5 11.Nb6) 7...0-0 8.Be2 e4 9.Nd4 Ne5 10.0-0 Qe7 11.f4; A2) 6...h6 7.Nc4 (7.Be2 Be6 8.0-0 0-0 9.h3 c6 10.c4 Nbd7 11.d4) 7...0-0 8.Be2 (8.h3 Be6 9.Be2 Nbd7 10.0-0 e4 11.Nd4) 8...Be6 9.0-0 Nbd7 10.h3 e4 (10...Qe7 11.a4) 11.Nd4; A3) 6...Bf5 7.Nc4 (7.Be2 0-0 8.Nc4 Nbd7 9.0-0 h6 10.a4 a6 11.d4; 7.Nh4 Be6 8.Nc4 Nbd7 9.Bd3 Nc5 10.0-0 0-0 11.Qf3) 7...0-0 8.Be2 Nbd7 9.0-0 Qe7 10.a4 a6 11.Nb6; A4) 6...e4 7.Nd4 c5 8.Ne2 0-0 9.Ng3 Nbd7 10.Be2 Ne5 11.Nc4; A5) 6...0-0 7.Nc4 (7.Be2 Be6 8.Nc4 Nbd7 9.0-0 Qe7 10.d4 e4 11.Nfd2) 7...Be6 8.Be2 Nbd7 9.0-0 Qe7 10.h3 (10.d4 e4 11.Nfd2) 10...h6 11.a4; B) 6.Be2 B1) 6...0-0 7.Nc3 (7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 h6 11.Na3; 7.Na3 Be6 8.0-0 Nbd7 9.Nc4 Qe7 10.d4 e4 11.Nfd2) 7...a6 8.a4 ab5 9.ab5 Ra1 10.Qa1 Bf5 11.d3; B2) 6...Bf5 7.a4 (7.Nc3 0-0 8.0-0 Nbd7 9.Bc4 Ba5 10.h3 Bc3 11.Bc3; 7.0-0 0-0 8.Nc3 Nbd7 9.h3 Qe7 10.d4 h6 11.Qd2; 7.Na3 0-0 8.Nc4 Nbd7 9.0-0 Qe7 10.a4 a6 11.Nb6) 7...Nbd7 8.a5 Bc5 9.d4 Bb4 10.c3 Bc5 11.dc5; B3) 6...e4 7.Nd4 c5 8.Nb3 Nbd7 9.Na3 0-0 10.0-0 Ne5 11.Nc4; B4) 6...h6 7.d4 e4 8.Nfd2 0-0 9.0-0 Bf5 10.Nc3 d5 11.f3; C) 6.a4 e4 7.a5 Bc5 8.d4 ed3 9.Bd3 0-0 10.Nbd2 a6 11.c4; D) 6.Nc3 0-0 (6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 0-0 10.Na4 Ba5 11.Bc4) 7.a4 (7.h3 Be6 8.Ng5 Nbd7 9.Qf3 d5 10.Be2 d4 11.Ne6; 7.Bd3 Nbd7 8.0-0 Nc5 9.Be2 Bd7 10.d4 ed4 11.Nd4) 7...Bf5 (7...a6 8.Bd3 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.Na4) 8.a5 (8.Be2 a6 9.a5 Bc5 10.d4 ed4 11.ed4) 8...Bc5 9.d4 (9.h3 a6 10.g4 Be6 11.Ng5) 9...ed4 (9...Bb4 10.de5 de5 11.Ne5) 10.Nd4 Bd4 11.Qd4.

4.e3 c6 5.a4 Nf6 6.c4 0-0 7.Nf3 Bg4 8.Be2 Re8 (8...e4 9.Nd4 Be2 10.Qe2=) 9.0-0= Nbd7 10.d4 Bb6 11.Nbd2 Bc7 (11...e4 12.Nh4 Be2 13.Qe2=) 12.h3 Bh5 ½–½. Nikolic,Jovane (1690) – Vicentin,Marcos Tadeu (1845), Sao Bernardo do Campo BRA, 3rd Open, 2012.

4.e3 c6 5.Nc3 Nf6 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 0-0 9.0-0 (9.Na4 Bb4 10.a3=) 9...Nfd7 (9...d5!?=) 10.bc6 (10.d4 ed4 11.ed4 Bb6+=) 10...Nc6 11.d4 (11.Nd5!?+=) 11...ed4= 12.ed4 Nd4 13.Nd5 (13.Ne4!? Nf3 14.Qf3=) 13...Nf3+= 14.Qf3 Ne5 (14...Qh4 15.Rae1 Rae8 16.Qf5+=) 15.Qg3= f6 16.Kh1 (16.Rad1 Rc8=) 16...Ng6 (16...Kh8 17.Rfe1=) 17.Rfe1 (17.f4 Kh8=) 17...Rc8 (17...Qd7 18.Rad1=) 18.c4 (18.Kg1 Qd7=) 18...Ne5 (18...Qa5 19.f4 Qd2 20.Bc3+=) 19.Be5 (better is 19.f4!? Ng6 20.h4+=) 19...fe5–/+ 20.Re4 (20.f3!?–/+) 20...Bf2 21.Qh3 (better is 21.Qd3-+) 21...Qg5?? (21...Bd4 22.Rae1-+) 22.Qe6?? (better is 22.Rg4 Qd8 23.Re4=) 22...Kh8-+ 23.Rg4 Qh6 24.Qh6 gh6 25.Ne7 Rc7 26.Nd5 Rcf7 27.g3 Bd4 28.h4?? Ba1 (28...Ba1 29.Kg2 Rf2 30.Kh3 Ra2-+) 0–1. lesbian13 – icewater, Live Game Caissa's Web, 2005.

4.e3 c6 5.d4 ed4 6.ed4 Bb4 7.c3 Ba5 8.a4 Nf6 9.Be2 0-0 10.Nf3 Re8 11.0-0 Bg4 12.Nbd2 (12.Re1 Nd5=) 12...Nd5 13.Bc4 Nc3 (13...Bc3 14.Bd5 Bd2 15.Qd2 cd5 16.Qf4=+) 14.Bc3= Bc3 15.Bf7 Kf7 16.Qb3 d5 (16...Be6 17.Qc3 Kg8 18.Rfe1=) 17.Qc3+= Bf3 18.Nf3 cb5 19.Rfb1 Nd7 (better 19...a6!?+=) 20.Rb5+/- (20.ab5?! Kg8+=) 20...b6? (better 20...Nb6+/-) 21.Rd5+- Rc8 22.Qb3 Kf8 23.Ne5 Qc7 (23...Re5 24.de5 Qc7+-) 24.Nd7 (24.Nd7 Kg8 25.Rc5 Kh8 26.Rc7 Rc7 27.Ne5+-) 1-0. onur604 (2320) - AdvocatusDei (2185), Casual Rapid game, lichess.org, 2021.

4.e3 Nd7 5.d4 ed4 6.ed4 Bb4 7.c3 Ba5 8.Bd3 Ngf6 9.Ne2 (9.Qe2 Qe7+=) 9...0-0 10.Nd2 Nd5 (10...a6 11.a4=) 11.0-0 Re8 12.Nc4 Bb6 13.a4 a5 14.Qb3 N7f6 15.Nb6 Nb6 16.Nf4 Nbd5?? (better 16...Bg4+=) 17.Nd5+- Be6 18.Nf6 gf6 (18...Qf6 19.c4 Bf5 20.d5+-) 19.Qc2 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Nd7 5.Be2 Ngf6 6.Nf3 0-0 7.0-0 Qe7 (7...e4 8.Nd4=) 8.c4 (8.d4 Bb4=) 8...e4 9.Nd4 Ne5 10.f4 ef3 11.Nf3 Nfd7 (11...a6 12.d4 Nf3 13.Rf3=) 12.Nc3 (12.d4 Nf3 13.Rf3 Bb6+=) 12...c6 (12...Nf6 13.a3+=) 13.a4 Nf3 14.Bf3 Ne5 15.d4 (15.Be2 Bb4+=) 15...Nc4= 16.dc5 (16.Qe2 Qe3 17.Qe3 Ne3 18.dc5 Nf1 19.Kf1 dc5 20.Ba3+=) 16...Nb2 (better is 16...Qe3 17.Kh1 Nb2=) 17.Qe2+= dc5 (17...Nc4 18.bc6 Na5 19.Nd5+=) 18.e4 (18.bc6 bc6 19.Qb2 Qe3 20.Kh1 Ba6+-) 18...cb5 (18...Na4!? 19.Na4 Bd7+/–) 19.ab5 Rd8 20.Qb2 Qe5 21.Qc2 b6 (21...Bd7 22.Rfd1+-) 22.Nd5 f5? (better is 22...Bb7+-) 23.Nb6! Rb8 (23...ab6 24.Ra8 Pinning (24.Ra8 Deflection)) 24.Nc8 Rbc8 25.Qc4 Kh8 26.ef5 Rc7 27.Rad1 Rcd7 28.Rd7 Rd7 29.Qe2 Qd4 30.Kh1 Rd8 31.Rd1 Qd1 32.Qd1 Rd1 33.Bd1 Kg8 34.Bb3 Kf8 35.g4 Ke7 36.Kg2 Kf6 37.Kf3 Ke5 38.h4 h6 39.Bc2 Kd4 40.g5 hg5 41.hg5 Ke5 42.Kg4 1–0. Nikolic,Jovane (1690) – Pinto,Ana Vitoria De Jesu (1750), Sao Bernardo do Campo BRA, 3rd Open, 2012.

4.e3 Be6 5.d4 ed4 6.ed4 Bb4 7.c3 Qe7?? 8.cb4+- Bg4 (8...Ba2 9.Qe2 Bb1 10.d5 Qe2 11.Ne2+-) 9.Ne2 Be2 (9...Nf6 10.f3 Bd7 11.Nbc3+-) 10.Qe2 Qe2 11.Be2 Nf6 (11...Nd7 12.Nc3+-) 12.Bf3 c6 13.0-0 (13.Kd2 Kd7+-) 13...0-0 (13...Kd7 14.Rc1+-) 14.bc6 bc6 (14...Nc6 15.b5 Nd8 16.Ba3+-) 15.b5! d5 (15...cb5 16.Ba8 Pinning (16.Ba8 Deflection)) 16.Nc3 cb5 (16...a6 17.bc6 Nc6 18.Nd5 Nd5 19.Bd5+-) 17.Nd5 Nbd7 (17...Nd5 18.Bd5 Nd7 19.Ba8 Ra8 20.Rac1+-) 18.Ne7 White plans d5 18...Kh8 19.Ba8 Ra8 20.d5 Nd5 (20...a6 21.Rac1+-) 21.Nd5 Nf6 (21...Rd8 22.Rac1 h6 23.Rfd1+-) 22.Nf6 gf6 23.Bf6 Kg8 24.Rfe1 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Be6 5.d4 ed4 6.ed4 Bb6 7.d5 Bf5? 8.Bg7 f6 (8...Ba5 9.Nd2+-) 9.Bh8 Qe7 10.Qe2 Nd7 11.Nc3 Qe2 (11...Nh6 12.Bg7 Ng4 13.Qe7 Ke7 14.Nd1+-) 12.Be2 (worse 12.Nge2 Kf7 13.g4 Bg4+-; worse 12.Nce2 Kf7 13.g4 Bg4+-; 12.Ke2?! Kf7+-) 12...0-0-0 (12...Ne7 13.Bg7+-) 13.0-0-0 (13.Bg7 Ne7 14.Bh6 Ba5+-) 13...Ne7 14.g4 Rh8 (14...Ba5 15.Nb1 (worse 15.gf5 Bc3 16.Bg7 Nf5+-) 15...Be4 16.f3 Bd5 17.c4 Rh8 18.cd5+- (18.Rd5?! Nd5 19.cd5 Nb6+-)) 15.gf5 Nf5 (15...Bf2 16.Kb2+-) 16.Bg4 (16.Nh3 Nd4+-) 16...Nh4 (16...Nh6 17.Bd7 Kd7 18.Nh3+-) 17.Bd7 Kd7 18.Rd3 Rg8 (18...Bf2 19.Ne4 Bb6 20.Nf6 Ke7 21.Ne4+-) 19.Ne4 Re8 (19...Ke7 20.Rh3 Rg4+-) 20.Nf6 Ke7 21.Ne8 Ke8 22.Nh3 (22.Nh3 Kd7 23.Rg1+-) 1-0. DEFFM – Arra, freechess.org, 2019.

4.e3 Be6 5.Nf3 Nf6 6.Be2 h6 7.0-0 (7.d4 ed4 8.ed4 Bb6=) 7...0-0 8.d4 ed4 9.Nd4 (9.ed4 Bb6=) 9...Bd4 (9...a6 10.Ne6 fe6 11.a4=) 10.Qd4 c5 (10...a6 11.a4=) 11.Qf4 (11.Qd3 a6 12.Nc3 d5+=) 11...Nd5 (better 11...d5!?+=) 12.Qg3+- g6 (12...Qg5 13.Qg5 hg5 14.Nd2+-) 13.a3 (13.Rd1 Nd7 14.Qd6 N5b6+-) 13...a6 (13...Qg5 14.Rd1 Qg3 15.hg3+- (worse 15.fg3 Ne3 16.Rd2 Re8=+)) 14.c4 (better 14.e4 Nf6 15.Nc3 ab5 16.Nb5+-) 14...Nb6+= 15.Nd2 (15.ba6 Ra6 16.Nd2 Na4+=) 15...Na4 (15...ab5 16.Ne4 N8d7 17.Rad1 Bc4 18.Rd6+-) 16.Rab1 Nb2 17.Rb2 Qe7 (17...ab5 18.Rb5 Ra3 19.Rb7=) 18.a4 (18.ba6!? Ra6 19.Ne4+=) 18...ab5=+ 19.ab5 Nd7 20.Ne4 Attacking the backward pawn on d6 (20.Rd1 Nb6=) 20...Ne5=+ 21.Rc2 Ra4 c4 draws heavy fire (21...Bf5 22.Qf4=+) 22.Rfc1 (22.Nc5 Rc4 23.Rc4 Bc4 24.Bc4 Nc4=) 22...Rfa8 (22...Bf5 23.Qf4 d5 24.Nc5 Qc5 25.Qe5 Bc2 26.Rc2-+) 23.h3 (better 23.Nc5 Ra1 24.Ne6 Qe6 25.Qf4+=) 23...Bf5–/+ 24.f3 (24.Qf4 d5! 25.Nc5 Bc2 26.Na4 Ba4 27.cd5 Bb3–/+) 24...Ra2 (24...Be4 25.fe4 Kg7 26.Rf1–/+) 25.Ra2 (25.Qf4 Kg7–/+) 25...Ra2 26.Nc3 Rc2 (better 26...Re2 27.Ne2 Nd3–/+) 27.Rc2+= Bc2 28.Nd5 Qd8 29.Qf4 (29.Qe1 Bf5+=) 29...Kg7 (29...Bb3 30.Kf2=) 30.e4+= Bd3 (30...Qg5 31.Qe3 Qe3 32.Ne3+=) 31.Bd3+- Nd3 32.Qd2 (32.Qe3 Ne5+-) 32...Ne5 33.f4 Nd7 34.Qe2 (34.Qa2 g5 35.Qb2 Kh7+=) 34...Nb6+= 35.Qd3 (35.Nb6 Qb6 36.Qd2 Qc7+=) 35...Nd5= 36.Qd5 Qf6 ½–½. Zampier,Alexandre (1610) – Salvadego,Matheus Henrique De, 3rd Floripa Open, 2017.

4.e3 Be6 5.f4 ef4=+ 6.Nf3 (6.Qf3 Ne7 7.Qf4 0-0=+) 6...Nf6 (6...fe3? 7.Bg7 ed2 8.Nbd2+-) 7.ef4 (7.d4 Bb4 8.c3 Ba5 9.ef4 Qe7=+) 7...0-0 8.d4 Bb6 (8...Bb4 9.Bc3 Bc3 10.Nc3=+) 9.Bd3 c5 (9...a6 10.a4=+) 10.Nbd2 (10.0-0 c4 11.Be2 d5=+) 10...Nd5 11.Bh7? (better is 11.Be4 Qe7 12.dc5 Bc5 13.Bd5 Bd5 14.Qe2–/+) 11...Kh7-+ 12.Ng5 Kg8 13.0-0 Ne3 14.Qh5 Bf5 15.Rf3 cd4?? 16.Rh3! (16...Bh3 17.Qh7) 1–0. Rodrigues Neto,Jose – Hirsch,Nelson, corr BRA, 1995.

4.e3 Qe7 5.c4 a6 6.a4 Nf6 7.Qc2 Bg4 8.Ne2 Bh5 9.Ng3 Bg6 10.Nf5 Bf5 11.Qf5 Qe6 12.Qf3 c6 13.Qg3 Qg4 (13...ab5!? 14.cb5 0-0+=) 14.Qg4= Ng4 15.Nc3 Nd7 16.Ne4 ab5 17.ab5 Ke7 18.Be2 Ra1 19.Ba1 Ra8 20.Bc3 Ngf6 21.Nf6 Nf6 (worse is 21...gf6 22.d4 Bb6 23.Bd3+=; worse is 21...Kf6 22.d4 Bb6 23.Bg4=) 22.bc6 bc6 23.Bf3 e4 24.Bd1 Nd7 25.0-0 Nb6 26.Bc2 f5 27.d4? (better is 27.Rb1+=) 27...ed3-+ 28.Bd3 (better is 28.Bb1 g6 29.Rd1–/+) 28...Ra3 29.Bf5 Rc3 30.Bh7 Nc4 31.h4 Kf7 32.g4 Ne5 33.Be4 d5 34.f4 Ng4 35.Bf5 Ne3 (35...Ne3 36.Bc8 Nf1 37.Kf1 Rf3 38.Ke2 Rf4-+) 0–1. Pruvost,Alain – Carlier,Guillaume (1870), Bethune op, 2000.

4.e3 Qe7 5.d4 ed4 6.Bd4 Bd4 7.Qd4 Nf6 8.Nf3 Bg4 9.Be2 Nbd7 10.0-0 0-0 11.c4 Nc5 12.Nc3 c6 13.h3 Bh5 14.g4 Bg6 15.Nd2?? (better is 15.Nh4+=) 15...Ne6-+ 16.Nd5 cd5 17.Qc3 Rac8 18.f4 dc4 (better is 18...Ne4!? 19.Ne4 Be4 20.Qb4-+) 19.f5 Nd5 20.Qa3 Nc5 (better is 20...Qh4!? 21.Qd6 Rfd8 22.Qh2 Ne3 23.Nf3 Nf1 24.Rf1-+) 21.fg6 (21.Nc4 Qh4 22.Rf3 Ne4-+) 21...hg6 (better is 21...Ne3!? 22.gf7 Kh8-+) 22.Nc4–/+ Qh4 23.Rf3 Ne4 24.Nd6 Rc3 25.Qa4 (25.Qa7 Ng5 (25...Nd6?! 26.Qd4–/+) 26.Ne4 Ne4 27.Qb7 Re3-+) 25...Nd6 26.Qd4 Re3! 27.Qd5? Re2 28.Qd6 Rd8 29.Qf4 Rdd2 30.Rg3?? Qe7-+ 31.Rc1 Re1 32.Re1 Qe1 33.Qf1 Qg3 0–1. cmulligan (2230) – dartking (2340), net–chess.com, 2011.

4.e3 Qe7 5.Nf3 Bg4 6.Be2 Nd7 7.0-0 Bb6 (7...Ngf6 8.d4 Bb4 9.a3=) 8.d4 Rd8 (8...e4 9.Nfd2 Be2 10.Qe2=) 9.a4 (9.c4+=) 9...a6 (9...e4 10.Nfd2 Be2 11.Qe2+/–) 10.c4 (10.a5 Ba7+/–) 10...Ngf6 (10...e4 11.Nfd2 Be2 12.Qe2 ab5 13.ab5+=) 11.a5 Ba7 12.Nc3 (12.h3 Bf5+=) 12...0-0 13.Ba3 (13.Qd3 e4 14.Ne4 Ne4 15.ba6 ba6-+) 13...Qe6 (13...ed4 14.ed4 Rfe8 15.h3=) 14.Rb1 (14.Qd3 e4 15.Ne4 Ne4 16.ba6 ba6-+) 14...Bf3 15.gf3 (15.Bf3 Qc4 16.Ne2 e4-+ (16...ab5?! 17.Bb7 c5 18.Bb2=+)) 15...Rb8 (15...ed4 16.ed4 Qf5 17.Bc1=+) 16.Rb2 (16.d5 Qf5=) 16...Rfe8 (16...ed4 17.ed4 Qf5 18.b6+=) 17.Na4 (17.d5!? Qf5 18.Bd3 Qg5 19.Kh1=) 17...ed4–/+ 18.ed4 (18.b6 de3 19.ba7 Ra8 20.Rb7 ef2 21.Rf2 Rac8+-) 18...ab5 19.cb5 Rbc8 (19...Qd5 20.b6 Qa5 21.ba7 Qa7 22.Bb4+=) 20.a6 ba6 21.ba6 Nb6 22.Nb6= Bb6 23.Bb5 Red8 24.Bc6 Nd5 25.Qd2 Qg6+= 26.Kh1 Qf5 27.Rb3 Nf4 28.Rg1 Ne6 29.Bb2 d5 30.Ra1 Ba7 31.Qe3 Rb8 32.Rb7 Nf4 33.Bc1?? Qf6 34.Qf4 Qc6 35.Ra7 Qc3 36.Rc7 Qa1 37.Qf7 1–0. Neuwald,Volker (1780) – Schweitzer,Michael (1820), Baden–ch HT4, 1994.

4.e3 Qe7 5.Nf3= Bg4 6.Be2 Nf6 (6...e4 7.Bg7 ef3 8.gf3+-) 7.0-0 0-0 8.d4 ed4 9.Nd4 Be2 10.Ne2 (10.Qe2 a6=) 10...Re8 11.Ng3 Nbd7 12.Nc3 (12.Nf5 Qe6 13.Qf3 a6 14.ba6 ba6=) 12...a6 13.a4 Ne5 (13...Qe6 14.Nge2=+) 14.Nd5 (14.Nce4 Ne4 15.Ne4 Bb4=) 14...Nd5 15.Qd5 Ng4 (15...c6 16.Qd2=+) 16.Bd4 (better is 16.Nf5!? Qe6 17.Qe6 fe6 18.Ng7+/–) 16...Bd4= 17.Qd4 Nf6 (17...Ne5 18.Rfd1=) 18.c4 (18.Rfd1 Qe6=) 18...Qe5 (18...ab5 19.ab5 Qe6 20.Ra8 Ra8 21.Ra1 Ra1 22.Qa1=) 19.Rfd1 Ne4 (19...Qd4 20.ed4 d5 21.c5=) 20.Ne4 Qe4 21.Rac1 (21.b6 cb6 22.Qb6 Rac8+=) 21...ab5 (21...Qd4 22.Rd4 b6 23.Kf1=) 22.cb5 (22.Qe4 Re4 23.cb5 Rea4 24.Rc7 Ra1+/–) 22...Ra4? (better is 22...Qe7!?+=) 23.Qe4+/– ½–½. Schwichtenberg,Juergen – Birkmeyer,Gerd, Hessen–ch Seniors, 2001.

4.e3 Ne7 5.d4 ed4 6.ed4 Nec6?? 7.dc5+- (7.bc6?! Qf6 8.cb7 Bb7+-) 7...dc5 (7...Ne5 8.cd6 cd6 9.f4+-) 8.bc6 bc6 (8...Qd1 9.Kd1 Nc6 10.Bg7+-) 9.Qd8 Kd8 10.Bg7 Rg8 11.Bf6 Ke8 12.Nc3 Na6 (12...Nd7 13.Bh4+-) 13.0-0-0 c4 (13...Bb7+-) 14.Rd8 1-0. DEFFM – lucafire, freechess.org, 2021.

4.e3 Ne7 5.Nf3 Bb6 6.a4 a5 7.d4 e4 8.Nfd2 d5 9.Be2 0-0 10.0-0 f5 11.c4 c6?? (better 11...Nd7+=) 12.c5+- Bc7 13.b6 Bb6 14.cb6 Qb6 15.Qb3 Qc7 16.Nc3 Be6 17.Rfc1 Nd7 18.Nb5! Qd8 (18...cb5 19.Rc7 Pinning (19.Rc7 Deflection; 19.Rc7 Clearance)) 19.Nd6 Rb8 20.Bc3 (20.Ba3 b6+-) 20...Nf6? (better 20...Qc7 21.Qa3 Nf6+-) 21.Rab1 (better 21.Nb7 Qc7 22.Rab1+-) 21...Qd6= 22.Ba5 Ng4 23.g3 h5 24.Bb6 Ng6? (better 24...Qd7=) 25.Bc5+- Qd8? (better 25...Qc7 26.Bf8 Nf8+-) 26.Bb6?? (better 26.Bf8 Nf8 27.Rc6+-) 26...Qg5 (better 26...Qd6!?=) 27.Bc7+/- Rbe8 28.Bf4 (28.h3 Ne3 29.fe3+/- (worse 29.Qe3 f4 30.h4 fe3 31.hg5 ed2-/+)) 28...Nf4=+ 29.ef4 Qf6 30.Qb7 Qd4 31.Qb6?? (better 31.Bg4 hg4 32.Nb3 Qa4 33.Nc5-/+) 31...Qd2-+ 32.Bg4 hg4 33.Qc6 (33.Rc6 Bf7 34.Qb4 Qe2-+) 33...e3 34.fe3 (34.Qc2 Rc8 35.Qd2 ed2 36.Rd1-+) 34...Qe3 35.Kg2 Qf3 36.Kg1 d4 (better 36...Bd7! 37.Qc3 Re3-+) 37.Rf1 (37.Qf3 gf3 38.Rb2-+) 37…Qc6 (37...Qc6 38.Ra1 Bd5 39.Rf2 Qc3 40.Rd1 Qe3 41.Rdf1 Qe4 42.Rf3 gf3 43.Rf3 Qf3 44.a5 Re1) 0-1. BitChess (2375) - Phutressniak (2425), Rated Bullet game, lichess.org, 2016.

4.e3 f5 5.c4 Nf6 6.d4 Bb4 7.Nd2 Qe7 8.Be2 0-0 9.a3 Ba5 10.Ngf3 e4 11.Ng5 h6 (11...f4!? 12.ef4 e3 13.fe3 Qe3-/+) 12.Nh3= g5 13.0-0 (13.Qb3 a6=) 13...Bd2=+ 14.Qd2 Be6 (better 14...f4!? 15.ef4 g4=+) 15.d5+= Bf7 16.f4 g4 17.Nf2 Nbd7 18.Bd4 Bg6 19.a4 b6 20.a5 h5 21.Qc3 h4 22.Rfe1 g3 23.hg3 hg3 24.Nh1 Kf7 25.Ng3 Rh8 26.Kf2 Rh2 27.ab6 cb6 28.Rh1 Ng4?? (28...Rh7+-) 29.Bg4 Rh1 30.Rh1 (30.Nh1?! Qh4 31.Ng3 Qg4+-) 30...fg4 31.f5 Rf8 32.fg6 Kg6 33.Kg1 Qf7 (33...Nc5 34.Bc5 dc5 35.Rh8+-) 34.Qc2 (34.Qc2 Re8 35.Rh5+-) 1-0. onur604 (2320) - ChrisConB1 (2205), Casual Rapid game, 2021.

4.e3 Bf5 5.Ne2 Nd7 6.d4 Bb4 7.Nd2 Ngf6 8.c3 Ba5 9.Ng3 Bg6 (better is 9...ed4!? 10.cd4 Bg6=) 10.Nc4 Bb6 11.Nb6 ab6 12.Be2 0-0 13.0-0 c5 (13...Qe7 14.c4=) 14.c4 Ne4 (better is 14...Re8!?+=) 15.Ne4+- Be4 16.de5 de5 17.Bf3 Bf3 18.Qf3 Qc7 (18...Qe7 19.Qb7 e4 20.f3+=) 19.Qf5+/– g6 (19...Rfe8 20.Rfd1 Nf8 21.a3+/–) 20.Qe4 Rfe8 21.Rfd1 Re6 (21...Nf6 22.Qf3 Qe7 23.a3+/–) 22.a3 Rd6 23.Rd6 Qd6 24.Qb7 Ra4 25.Qc6 Qd2 26.Be5 Rc4 27.h3 Rc1 28.Rc1+- Qc1 29.Kh2 Ne5 30.Qe8 Kg7 31.Qe5 Kg8 32.a4 c4 33.a5 ba5 34.b6 Qb1 35.Qb8 Kg7 36.b7 Qe4 37.Qc7 c3 38.b8Q (38...Qe6 39.Qc5 Qc8 40.Qce5 Kh6 41.Qc8 f5 42.Qf8 Kh5 43.g4 Kg5 44.Qee7) 1–0. Trkn – guest195, ICC, 2004.

4.e3 Nf6 (--> 3.Bb2 Nf6 4.e3 d6).

4.Nf3 Bb6 5.a4 a5 6.e3 Bg4 7.h3 White fights for the Initiative 7...Bh5 8.Nc3 Ne7 (8...Nd7 9.Bc4=) 9.g4 Bg6 10.d4 Nd7 11.Bg2 0-0 (11...e4 12.Nh4 d5 13.Ng6 hg6 14.Ba3=) 12.de5+= de5 13.Nh4 Rb8 14.Qe2 Nd5 (14...Qe8 15.Rd1+=) 15.Ng6+/- (worse 15.Bd5 Qh4 16.Rd1 Rfd8=+) 15...Nc3 16.Bc3 hg6 17.h4 Qe7 18.h5 gh5 19.Rh5 Bc5 (19...Rfd8 20.Qc4+/-) 20.0-0-0 Bb4?? (better 20...g6 21.Rh6 Nb6+/-) 21.Rdh1+- (21.Rdh1 g6 22.g5 Qg5 23.Rg5 Bc3 24.Qc4+-) 1-0. Pereira – IreneSt, internet, 2020.

4.Nf3 Be6 5.e3 a6 6.d4 ed4 7.ed4 Bb6?? (better 7...Bb4 8.c3 Ba5+=) 8.d5+- Bd7 (8...Nf6 9.de6 fe6+-) 9.Bg7 1–0. Ddgs – Graband, internet, 2019.

4.Nf3 Bf5 5.e3 Nf6 6.d4 ed4 7.Nd4 Bd4 8.Bd4 0-0 9.Qf3 Be4 (9...Bc2 10.Nc3 c5 11.Bf6 Qf6 12.Qf6 gf6 13.Be2+=) 10.Bf6+= Qf6 11.Qf6 gf6 12.Nc3 f5 (better is 12...Re8!? 13.Ne4 Re4+/–) 13.f3+- (13.Ne4?! fe4 14.Rd1 Nd7+=) 13...Bc2 14.Rc1 Re8 (14...f4 15.e4 Be4 16.Ne4+-) 15.Kd2 (15...f4 16.e4+- (16.Rc2?! fe3 17.Ke2 c6+-; 16.Kc2?! fe3 17.Nd5 Nd7+-); 15.Nd5 Ba4 16.Nf6 Kf8 17.Ne8 Ke8 18.Rc7 f4+-) 1–0. Maec,Michael – Kirmse,Horst, remoteschach.de, 2003.

4.Nf3 Nf6 5.c4 a6 6.d4 ed4 7.Bd4 Be6 8.Bc5 dc5 9.Qd8 Kd8 10.e3 Nbd7 (10...ab5 11.cb5 Ra2 12.Ra2 Ba2 13.Nc3–/+) 11.Ng5 Ne5 (11...ab5 12.Ne6 fe6 13.cb5+=) 12.a3 (better is 12.f4!? Neg4 13.ba6 ba6 14.e4+=) 12...Ke7 13.Ne6 Ke6 14.Be2 h5 (14...ab5 15.cb5 Rhd8 16.Ra2+=) 15.0-0 (15.Nc3 ab5 16.Nb5 Rhc8=) 15...h4 (15...ab5 16.cb5 Rhd8 17.Rc1+=) 16.f4 Neg4 17.Bf3 Rab8 (17...Ne3? A) 18.Bb7 Nf1 (worse is 18...Nc4 19.Re1 Kf5 20.Ba8 Ra8 21.ba6+=) 19.Ba8 Ra8 20.Kf1 ab5+=; B) 18.Re1 Kf5 19.Re3+-) 18.h3 Nh6 (18...Ne3? 19.Re1 Rhe8 20.Re3 Kf5 21.Re8 Ne8 22.ba6 ba6 23.Nc3+-) 19.ba6 ba6 20.Nc3 Nf5 21.Na4 Nd7? (better is 21...a5!?+/–) 22.Bg4+- Kf6 (22...Nf6 23.e4 Ng4 24.ef5 (24.hg4?! Ne3 25.Nc5 Kd6 26.Na6 Rb7+/–) 24...Kf5 25.hg4 Kg4 26.Nc5+-) 23.e4 Ne3 24.Bd7 Nf1 25.Kf1 g5 (25...Ke7 26.Nc5 Kd6 27.Na6 Kd7 28.Nb8 Rb8 29.a4+-) 26.Nc5 gf4 27.Na6 Rbd8 28.Bc6 Rd6 (28...Rd4 29.Bd5 c6 30.Bc6 Rc4 31.Nb4+-) 29.Nb4 Rg8 30.Bd5 Rg3 (30...Rb6 31.Nc6+-) 31.Nc6 Kg7 32.Ne7 Kf6 33.Nf5 Rd3 (33...Ra6 34.Ng3 fg3 35.Rb1+-) 34.Nd6 cd6 35.a4 f3 (35...Rg3 36.a5 f3 37.a6 fg2 38.Kg1 Rh3 39.Kg2 Rg3 40.Kh2+-) 36.a5 fg2 37.Kg2 Ke5 (37...Rd2 38.Kg1 Rd3+-) 38.a6 Kf4 39.a7 Rd2 40.Kf1 Kg3 41.a8Q Rf2 42.Ke1 Rf3 43.Qg8 Kh3 44.Ke2 Rg3 45.Rh1 Kg2 46.e5 1–0. Macko (1820) – Narayanan (1700), playchess.de, 2006.

4.Nf3 Nf6 5.e3 (--> 3.Bb2 Nf6 4.e3 d6 5.Nf3).

4.Nf3 Bg4 5.e3= Qd7 6.c4 Nf6 7.Nc3 e4 8.h3 ef3 9.hg4 Qg4 10.Qf3 Qf3 11.gf3 a6 12.a4 b6 13.Bg2 Nbd7 14.f4+- Ra7 15.Bc6 0-0? 16.Ke2 Nb8 17.Bf3 a5?? 18.Rag1+- Nbd7 19.Ne4 Re8 20.Nf6 Nf6 21.Bf6 g6 22.Rh6 Re6+- 23.Bb2 c6 24.Bc6 Rae7 25.Bd5 Re3 26.fe3 (26...Re6 27.Rh7+-) 1–0. Francia,Pasquale – Paorao, 5 minutes game, 2005.

5.Ba3 Ba3=+ 6.Na3 c6 7.Qf3 Bd7 8.Bc4 Nf6 9.bc6 Bc6=+ 10.Qg3 0-0 11.Nh3 h6 12.Qh4 Ne4 13.Qg4 Nf6 14.Qf5?? Be4-+ 15.Bf7 Rf7 16.Nb5 Bf5 17.Nd6 Qd6 (18.Ng1 Bc2-+) 0–1. manofsteel2 – Huff4, Live Game Caissa's Web, 2005.

5.Nc3 c6 6.Ne4 Bb6 7.d4 Bf5 (better is 7...d5 8.Ng3 e4=) 8.de5?? (better is 8.Ng3 Bg6 9.de5+/–) 8...Be4–/+ 9.ed6 (9.Qg4!? Bg6 10.ed6–/+) 9...Nf6-+ 10.bc6 Nc6 11.Bb5?? (11.Nf3 Bc5 12.Nd2 Bg6-+) 11...0-0 (better is 11...Bg2 12.Bf6 Qf6-+) 12.Bc6 (12.f3 Bg6 13.Bc6 bc6-+) 12...bc6 13.c4 (13.Nf3 Bd5-+) 13...Bc5 (better is 13...Bg2 14.Bd4 Qd6-+) 14.Nf3 Bf3 (better is 14...Bb4 15.Ke2 Bd6-+) 15.Qf3 Qd6 16.Rd1 (16.Bf6 Bb4 17.Ke2 gf6 18.Qg4 Kh8-+) 16...Qe6 17.Bf6 Bb4 18.Ke2?? (18.Kf1 Qc4 19.Qe2 Qe2 20.Ke2 gf6 21.Rd7-+) 18...Qc4 (18...Qf6?! 19.Qf6 gf6 20.Rd7–/+; 18...gf6?! 19.Rd4 Rfd8 20.Rhd1 Rd4 21.Rd4-+) 19.Rd3 gf6 (19...Qc2 20.Kf1 Qd3 21.Kg1 Qb1 22.Qd1 Qd1) 20.Ra1 (20.Qg3 Kh8 21.Rhd1-+) 20...Qc2 (20...Qc2 21.Kf1 Qd3 22.Kg1 Rfd8-+) 0–1. kamera – tage01 (1660), GameColony.com, 2002.

5.Nc3 Nf6 6.Na4 Ba7 7.Nf3=.

5.c4 Be6 6.a4 (6.a3 Nf6=) 6...f5 (6...Nf6 7.Nf3=+) 7.Nf3= Nf6 8.d4 e4?? (8...Bb4 9.Bc3=) 9.Nfd2?? (better 9.dc5 ef3 10.Qf3+-) 9...Ba7 10.Be2 c6 11.Nc3 d5 12.cd5 cd5 13.Nb3 b6 14.g3 Nbd7 15.Rc1 Bb8 16.0-0 Bd6 17.f4 Rc8 18.Nb1 Kf8 (18...0-0 19.Rc8 Qc8 20.Qc1=) 19.Ba3 (19.Rc6 Rc6 20.bc6 Nb8=) 19...Ba3= 20.Na3 Kf7 21.Rc6 (21.Bh5!? g6 22.Be2=) 21...Rc6=+ 22.bc6 Nb8 23.c7 (23.Qc1!? Qc7 24.Nb5 Qc6 25.Qa3=+) 23...Qc7-/+ 24.Nb5 Qd7 25.Qc2 Nc6 26.Rc1 Nb4 (26...Rc8 27.Qb2-/+) 27.Qc7=+ Kg6?? (better 27...Qc7 28.Rc7 Nd7=+) 28.Qb6+- Nd3 29.Rc7 Qd8?? (better 29...Qe8+-) 30.Qe6 Re8 31.Qf7 Kh6 32.Qg7 1-0. BeepBeepImAJeep (2565) - ben_ckeck (1765), lichess.org, 2017.

5.c4 Nf6=+ 6.Be2 0-0 7.d3 (7.Nc3 Re8=+) 7...Re8 (7...a4 8.Nf3=+) 8.g3 (8.Nf3 a4=) 8...Nbd7 9.h4 Qe7 10.Bg4 (10.Nc3 Nb6–/+) 10...b6 (10...Bb4 11.Bc3-+) 11.Bd7 Nd7 12.Qf3 Ra7 13.e4 Nf6 14.Qg2 Ng4 15.a4?? (better is 15.Nh3–/+) 15...Bf2 (15...Nf2 16.d4 Bd4 17.Bd4 Nh1 18.Bb2-+) 16.Ke2 Bc5 17.Ba3 (17.Nc3 Ne3 18.Qh2 Bg4 19.Kd2 Qf6-+) 17...Bd4 18.Ra2 Qe6 (18...f5 19.Ke1-+) 19.Nf3 Qh6 (19...f5 20.Ng5 Qe7 21.Bc1-+) 20.Bc1 Be3 21.Ng5? (better is 21.Bd2-+) 21...Bc1 22.Rc1 f6 23.Rh1 fg5 24.h5 Rf8 25.Ke1 Qf6 (25...Ne3 26.Qe2 g4 27.Rd2-+) 26.Rf1 (26.Nc3 Rf7-+) 26...Qf1 (better is 26...Ne3 27.Rf6 Ng2 28.Rg2 Rf6 29.Nc3-+) 27.Qf1 Rf1 28.Kf1 Nf6 29.Rh2 Bg4 30.h6 c6! 31.bc6 Rc7 32.Na3 Rc6 33.Nb5 Bd1 34.Na7 Rc5 35.Nb5 Ne8 36.Nc3 Bg4 37.Nd5 b5! 38.ab5 Kf7 39.hg7 Kg7-+ 40.Ne7 Bd7 41.Nd5 Nf6 42.Ra2? Nd5 43.ed5 Bf5 44.Ke2 e4 45.de4 Be4 46.Ra5 Rc4 47.Ra7 Kf6 48.Ra6 Ke5 49.b6 Bd5 50.Ra7 h5 51.b7 Rb4 52.Ra8 Rb7 53.Rh8 Rb3 54.Rh5 Bf3 (54...Bf3 55.Kd2 Bh5-+) 0–1. riverborne – sing, Live Game Caissa's Web, 2005.

5.d4!? ed4 6.ed4=.

5.Nf3 Bg4=.

5.c4 Bd7 6.Nf3 c6 7.a4 Ne7 8.d4 Bb4 9.Nc3 0-0 10.Bd3 Qa5 11.Qc2 g6 12.0-0 ed4 13.Nd4 cb5 14.cb5 d5 (14...Kh8 15.Be4 Bc8 16.Rfd1+-) 15.Nce2 (better is 15.Nd5!? Nd5 16.Qc4+-) 15...Bg4 16.Nf4 Nd7 (better is 16...Bd6+/–) 17.Ng6?? (better is 17.f3 Rac8 18.Qb1+-) 17...hg6+= 18.Bg6 Rac8 19.Qb1 Nc5 20.Ba3 (better is 20.Bf5!? Bf5 21.Nf5+=) 20...Ba3–/+ 21.Ra3 Ne4?? (better is 21...f5 22.h3 Bh3-+ (worse is 22...Ng6 23.hg4 Ne7 24.gf5+=; 22...Na4 23.hg4 Ng6 24.gf5+/–)) 22.Be4+- de4 (22...f5 23.Bc2+-) 23.Qe4 f5 24.Qe7 Rce8 (24...Rc7 25.Qe6 Kh7+-) 25.Qg5 Kh8 (25...Kf7 26.Nf5 Bf5 27.Qf5 Ke7 28.Qe4 Kf6 29.Qb7+-) 26.h3 Qb4 27.Raa1 1–0. Fournier,Frederic – Chalvet,Philippe, Partie Libre (Active), 1994.

5.c4 Be6 6.d4 ed4 7.ed4 Bb4 8.Nd2 (8.Bc3 Bc3 9.Nc3 Qe7=) 8...Qe7 9.Qe2 Bd2 (9...d5!? 10.c5 Bg4 11.Qe7 Ne7=) 10.Kd2+= Nd7? (10...Bf5 11.Re1 Qe2 12.Ne2+/–) 11.Nf3?? (better is 11.Re1 Bf7 12.Qg4+-) 11...0-0-0= 12.Qe3 Re8 (12...Kb8 13.Bd3=) 13.Bd3 (13.d5 Bg4 14.Qa7 Nc5+=) 13...Nh6 (13...Qf7!? 14.Rae1 Nh6=) 14.d5+/– Bf5 15.Rhe1 (15.Qe7 Re7 16.Bd4 Bd3 17.Kd3 Rhe8+=) 15...Qe3= 16.Re3 Nc5 (16...Bd3 17.Rd3 Nc5 18.Ra3=) 17.Bf5 Nf5 18.Rae1?? (better is 18.Re8 Re8 19.Re1 Re1 20.Ne1 Ne4 21.Ke2=) 18...Ne3-+ 19.fe3 Re4 20.Bd4 Rhe8 21.Rc1 (21.Bc5 dc5 22.Kd3 f5–/+) 21...R4e7 (21...Kd7 22.h3-+) 22.Bc5 dc5 23.Kd3?? (better is 23.Rc3-+) 23...Re3 (23...Re3 24.Kd2 Re2 25.Kd1 Rg2-+ (worse is 25...Ra2 26.Nd2-+)) 0–1. Fredek (2065) – Lelalulilo, Freundschaftspartie, 5m + 0s, 2006.

5.c4 Be6 6.Nf3 a6 7.a4 (7.d4 Bb4 8.Bc3 Bc3 9.Nc3 ab5 10.Nb5 Ne7=) 7...Nd7 (7...ab5 8.cb5 Bg4 9.a5=) 8.Nc3 (8.d4 Bb4 9.Bc3 Bc3 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Nb6=) 8...c6 (8...ab5 9.ab5 Ra1 10.Ba1=) 9.Be2 (9.d4 Bb4=) 9...Ne7 (9...ab5 10.cb5 Ne7 11.d4=) 10.0-0 0-0 11.d4 Bb4 12.Qb3 c5 13.dc5 dc5 14.Rfd1 Qc7 (14...ab5 15.ab5 Ra1 16.Ba1+=) 15.Rac1 Bc3 16.Bc3 e4 (16...Rfd8 17.a5=) 17.Nd2+= f5 18.Qb2 Nf6 19.Be5 Qc8 20.b6 Nc6 (20...Ng6 21.Nb3+=) 21.Bd6 Rd8 22.Bc5 Na5? (better is 22...Bf7!?+/–) 23.Be7+- Nc4? (23...Rd7 24.Bf6 gf6 25.Qf6 Qc6+-) 24.Nc4 (worse is 24.Bc4 Qd7 25.Bd8 Rd8 26.Be6 Qe6+-) 24...Rd1 25.Bd1 Bc4 (25...Nd5 26.Bd6+-) 26.Rc4! (26.Rc4 Qc4 27.Bb3+-) 1–0. Lebel,Patrick (2255) – Fargere,Jacky, Cannes op2, 1990.

5.c4 Ne7 6.Nf3 0-0 (6...Bg4 7.d4 Bb4 8.Bc3 Bc3 9.Nc3 ed4 10.ed4=) 7.Be2 (7.d4 ed4 8.Nd4 Bd4 9.Qd4 Nd7=) 7...c6 (7...e4 8.Nd4=) 8.0-0 (8.d4 ed4 9.ed4 Bb4 10.Bc3 Ba5+=) 8...cb5 (8...e4 9.Nd4=) 9.d4 ed4 10.ed4 Bb6 11.cb5 Bf5 (11...Ng6 12.Re1+=) 12.Nc3 Nd7 (12...d5 13.Ba3 Re8 14.Rc1+=) 13.Re1+- h6 (13...Bg6 14.Ba3 Bc7 15.Bc4 Kh8 16.Rc1+-) 14.Nh4 Bh7 15.Bf3 Rb8 16.Ba3 (16.Qb3 Kh8 17.Qe6 Re8 18.Qd6 Bc7+-) 16...Bc7 (16...Nc8 17.Rc1+-) 17.Qe2+- Nc8 (17...Re8 18.Bd6! Bd6 19.Qe6 Kh8 20.Qd6+-) 18.Qe6 Kh8 19.Nd5 Bg8?? (19...Ba5 20.Nf4 Be1 21.Nhg6 Bg6 22.Ng6 Kh7 23.Re1 Qa5+-) 20.Ng6 (20.Qd7 Bh7 (20...Qd7?? 21.Ng6 Kh7 22.Nf8 Kh8 23.Nd7+-) 21.Qc7 Qc7 22.Nc7 g5+-) 20...Kh7 21.Qf5 Bf7 (21...Re8 22.Ndf4 Be6 23.Re6 Ne5 24.Ne5 Kh8 25.Nfg6 Kg8 26.Bd5 Ne7 27.Re7 Kh7 28.Nf8 Kh8 29.Qh7) 22.Nf8 Kg8 23.Nd7 Ra8 24.N5f6! gf6 25.Bd5 Bd5 (25...Kh8 26.Bf7 Ne7 27.Qf6 Kh7 28.Re7 h5 29.Qg6 Kh8 30.Qh6) 26.Qg6 Kh8 27.Nf6 (27.Nf6 Qf6 28.Re8 Qf8 29.Rf8 Bg8 30.Qg8) 1–0. Janek – Uuzet, internet, 2017.

5.Bc4 Bd7 6.Bg8 (better 6.d4 ed4 7.Qh5 g6 8.Qd5+-) 6...Rg8= 7.Qh5 g6 (7...Kf8 8.Nc3 a6 9.Nf3=+) 8.Qh7 Be6 9.Nf3 Qd7 10.Qd7 Bd7 (10...Nd7 11.d4 Bb6 12.a4+=) 11.c4 (11.d4 ed4 12.ed4 Bb6+-) 11...Be6= 12.d3 a6 13.a4 c6 14.Ba3 (14.Nc3 ab5 15.ab5 Ra1 16.Ba1 Nd7+=) 14...Ba3 (better 14...ab5!? 15.ab5 Ke7=+) 15.Na3+= ab5 16.ab5 d5 (16...Nd7 17.Ke2+=) 17.0-0 (17.bc6 Nc6 18.cd5 Bd5+=) 17...Bg4 (17...Ke7 18.bc6 Nc6 19.cd5 Bd5 20.Rfb1+=) 18.Nc2 Ra1 19.Ra1 Bf3 20.gf3 Ke7 (20...dc4!? 21.dc4 Kd7+=) 21.Ra7 Kd6 (21...dc4 22.Rb7 Kd6 23.dc4+-) 22.Rb7 Nd7 (22...dc4 23.dc4 Kc5 24.b6+-) 23.bc6 (better 23.cd5 cd5 24.Kg2+-) 23...Nc5? (23...Kc6 24.Rb5 dc4 25.dc4+-) 24.Rb1 (24.Rf7 Ke6 25.Ra7 dc4 26.dc4 Kd6+-) 24...Nd3? (better 24...dc4 25.dc4 Kc6 26.Nb4 Kd6+-) 25.cd5 Rc8 (25...Nc5 26.Rd1 Ra8 27.e4+-) 26.e4 f5 (26...Kc5 27.Ne3+-) 27.Rb7 (27.Ne3 fe4 28.fe4 Kc5+-) 27...Nf4 (27...Rc7 28.Nb4 Nc5 29.Rb8+-) 28.Ne3 (better 28.Na3 Nd5 29.Rd7 Kc6 30.Rd5 Kb7+-) 28...Ra8 (28...Kc5 29.Kf1+-) 29.Rb1 (29.Rd7 Kc5 30.c7 Rc8+-) 29...Rc8 (29...Ra4 30.ef5 Ra7+-) 30.Nc4 Kc5 31.Ne5 (31.Ne5 Kd6 32.Nf7 Kc5 33.Kf1 fe4 34.fe4+-) 1–0. Zelanti,Markus – Eisfeld,Daniel, Berlin Hellersdorf op, 2010.

5.d4 Bb4 6.c3 Ba5 7.Nf3 (7.Bd3 Ne7=) 7...c6 (7...e4 8.Nfd2 d5 9.Nb3=) 8.Bd3+= Bd7 (8...cb5 9.Bb5 Bd7 10.Qb3+=) 9.0-0 (9.bc6 Nc6 10.0-0 Qb6+=) 9...cb5 10.Qb3 ed4 (10...Ne7!?+=) 11.Nd4 b5 draws heavy fire 11...a6 12.a4 ba4? (better is 12...Nc6 13.ab5 Nd4 14.ed4 Ne7+/–) 13.Qb7+- (13.Qb7 Qb6 14.Qa8 Qb2 15.Ra3+-) 1–0. pcmvr (2530) – tata (2085), net–chess.com, 2006.

5.d4 Bb6 6.de5 fe5 7.Bc4 Qe7 8.Nf3 Be6 9.Be6 Qe6 10.0-0 Nf6 11.Ng5 Qf5 12.Qf3 Qf3 (worse is 12...Qg5 13.Qb7 0-0 14.Qa8+-) 13.Nf3 Nbd7 14.Nbd2 Nc5 15.a4 a6 16.a5 Ba7 17.b6 cb6 18.Nc4 Ke7 19.ab6 Bb8 20.Nh4 Ke6 21.f4 Ncd7 22.fe5 de5 (worse is 22...Ne5 23.Nf5 Rg8 24.Na5=) 23.Nf3 Bd6 (better is 23...Rc8!? 24.Ng5 Ke7+=) 24.Nd6+= Kd6 25.Rad1 Ke6? (25...Ke7!?+=) 26.Ng5+/– Ke7 27.Ba3 Ke8 28.Ne6 Nd5?? (28...Kf7 29.Rd7 Ke6 30.Re7 Kd5 31.Rg7 Rag8 32.Rg8 Ng8+-) 29.Rd5 (29.Rd5 Nf6 30.Ng7 Kf7 31.Nh5+-) 1–0. Pcmvr – Whiterock, playchess.de, 2004.

5.d4 ed4 6.ed4 Bb4 7.c3 Qe7 8.Be2 Ba5=.

5.d4 ed4 6.ed4 Qe7 7.Be2 Bb6=.

5.Be2 Be6 6.d4 ed4 (6...Bb6 7.Nf3=) 7.ed4 Bb4 8.Bc3 (8.c3 Ba5+=) 8...Bc3= 9.Nc3 Nd7 (9...c6 10.Nf3+=) 10.Ne4 (10.Nf3 Ne7+=) 10...Ne7 (10...f5 11.Ng3=) 11.Nf3 Nf5 (11...0-0 12.0-0=) 12.0-0+= Qe7 (12...d5 13.Ned2+=) 13.a4 (13.c4 0-0-0+=) 13...0-0-0 (13...d5 14.Ned2+=) 14.Re1 Nb6 (14...d5 15.Ned2+=) 15.c4 (15.a5 Nd5 16.Qd2+/–) 15...Rd7? (15...d5 16.Nc5 dc4 17.Bc4 Nc4 18.Ne6 Rde8+-) 16.Qc2 White prepares c5 (better is 16.Bd3 Nh6 17.d5+-) 16...d5? (16...Rdd8 17.a5 Na8 18.Bd3+-) 17.c5?? (17.Nc5 Re8 18.cd5 Rd5 19.Ne6 Qd7+-) 17...Nc4?? (better is 17...de4 18.cb6 ab6 19.Qe4 Nd6+/–) 18.Bc4+- dc4 19.Nfd2 Rd4 20.Rad1 Bd5?? 21.Nd6! Nd6 22.Re7 (22.Re7 Rd8 23.cd6 Rd6 24.Qh7+-) 1–0. valpa – Rockman_166, playchess.de, 2002.

5.Be2 Ne7 6.d4 Bb4 7.c3=.

5.Nf3 Nd7 6.Be2 Nb6 7.0-0 Be6 8.d4 Bd4?? (better is 8...Na4 9.Bc1 Bb4+=) 9.ed4+- Ne7 10.de5 de5 11.Qd8 Rd8 12.Nc3 0-0 13.Ba3 Rf7 14.Rad1 Ned5 15.Nd5 Nd5? (15...Rd5 16.c4 Rdd7+-) 16.c4 Rfd7 17.cd5 Bd5 18.Rd3 (better is 18.Bc5 Kf7+-) 18...e4 19.Rd5! Rd5 20.Bc4 (better is 20.Ne1!? Kh8 21.Bc1+-) 20...ef3 21.Rd1 c6 22.Bd5 cd5 23.gf3 Kf7 24.Kf1 Ke6? 25.Ke2 Ke5 Black prepares the advance d4 26.Ke3 g5 27.Rd4 f5? 28.f4 gf4 29.Rf4 d4 30.Rd4 Rd4 31.Bb2 f4 32.Kf3 Kd5 33.Bd4 Kd4 34.Kf4 Kc5 35.a4 Kb4 36.Ke4 Ka4= 37.b6 ab6?? 38.Kd3 Kb3?? 39.f4+- Kb4 40.f5 Kc5-+ 41.f6 Kd6 42.Kc4 h5 43.Kb5= h4 44.Kb6 Ke6 45.Kb7 Kf6 46.Kc6 Kf5 47.Kd5 Kf4 48.Kd4 Kf3 49.Kd3 Kg2 50.Ke2 h3 51.Ke1 ½–½. Rush,Bradley – Brough,Carl, 56. LSS No Engine Cup Preliminary, 2011.

5.Nf3 Be6 6.Nc3 Ne7 (6...Nd7 7.Be2=) 7.Be2 (7.Ne4 Bb4=) 7...a6 8.0-0 (8.d4 Bb4=) 8...ab5 9.Bb5 Nbc6 (9...c6 10.Be2+=) 10.d4 Bb4 11.d5 (11.a3!? Bc3 12.Bc3=) 11...Bc3–/+ 12.dc6 bc6 13.Bc6 Nc6 14.Bc3 Ra2 15.Ra2 Ba2 16.Qd3 0-0 17.Ra1 Be6 18.Ba5 (18.Ra6 Qd7–/+) 18...Na5 (18...Qe7 19.Qe4 d5 20.Qd3–/+) 19.Ra5 Qb8 (19...f5 20.Qc3–/+) 20.h3 (20.Rb5 Qe8–/+) 20...Qb7 21.Qa3 (better is 21.Rb5!? Qc6 22.Nd2–/+) 21...Qb1-+ Black is in command 22.Kh2 Qc2 23.Ra8 (23.Kg1 Qd1 24.Kh2 Bd5-+) 23...Bd5 (23...Qf2!? 24.Ra7 Bd5 25.e4 Be4 26.Rc7-+) 24.Rf8 Kf8 25.Kg3 Qg6 26.Kh2 Bf3 27.gf3 e4 (27...Ke7 28.Qc3 c5 29.e4-+) 28.Qa8 (28.Qa7 ef3 29.Qb8 Qe8 30.Qc7 Qe5 31.Kh1 f5–/+) 28...Qe8 29.Qb7 ef3 (29...Qe5!? 30.Kg2 d5 31.fe4 de4 32.f3-+) 30.Qc7 Qe5 31.Kg1? (31.Kh1 d5 32.Qd8 Kf7 33.Qd7 Kg6 34.Qg4 Kh6 35.Qf3–/+) 31...Qg5 32.Kf1 Qg2 33.Ke1 Qg1 34.Kd2 Qf2 35.Kd3 Qe2 (35...Qf1 36.Kd4 Qd1 37.Ke4 d5 38.Kf4-+) 36.Ke4 d5 37.Kd5 (37.Kf5 Qd3 38.Kf4-+) 37...Qd3 38.Ke6 Threatening mate: Qf7 38...Qe3 39.Kf5 Qe5 40.Qe5 fe5 41.Ke5 f2 (41...f2 42.Ke4 f1Q-+) 0–1. Dessing,Bastiaan – Kooiman,Tobi, NED–ch U12 Rijswijk, 2001.

5.Nf3 Be6 6.c4 Nd7 7.d4 Bb4 8.Nbd2 Nb6 (8...Ne7 9.Bd3+=) 9.Qb3 Bd2 10.Nd2 (10.Kd2?! Ne7=+) 10...Ne7 11.a4 (11.Bd3+-) 11...g5 (better 11...a6!?+=) 12.Be2 h5 (12...0-0 13.0-0+-) 13.Qd1 (13.0-0 Nd7+-) 13...Bf7 (13...ed4 14.0-0 d5 15.Bd4+-) 14.c5 (14.a5 Nd7+-) 14...dc5 (14...Nbd5 15.0-0+-) 15.dc5 (15.de5!? fe5 16.Be5 Rh6+-) 15...Nbd5 16.Ne4 Ng6 (16...Qd7 17.0-0+-) 17.Bd3 (17.0-0 Nge7+-) 17...Qe7 (better 17...Nb4!? 18.Ra3 Nh4+=) 18.Ba3+- Qe6 19.Qc2 White prepares c6 19...g4? (19...Nge7 20.c6 bc6 21.Nc5+-) 20.g3?? (20.Nd6!? cd6 21.Bf5 Qf5 22.Qf5 Nh4+-) 20...h4 (better 20...f5 21.Ng5 Qf6 22.Nf7 e4+-) 21.Ke2?? (better 21.Nd6 cd6 22.Bf5 Ne3 23.fe3+-) 21...hg3 (21...Nge7 22.c6 b6 23.Rad1=) 22.hg3+= 0-0-0?? (better 22...Rh3+=) 23.c6 (better 23.Nd6 Kb8 24.Bf5 Qe7 25.Rh8 Rh8 26.Nf7 Ngf4 27.gf4 Qf7+-) 23...b6 (23...Rh1 24.Rh1 bc6 25.bc6+-) 24.Nc5 (better 24.Rh8 Rh8 25.Ng5 Nc3 26.Kd2+- (26.Qc3?! fg5 27.Be4 Qf6+-)) 24...bc5 25.Bf5?? (25.Rh8 Nc3 26.Kf1 (26.Qc3?! Rh8 27.Qc2 Ne7+-) 26...Rh8 27.Bf5 (27.Qc3? e4 28.Be2 Qf5-+) 27...Rh1 28.Kg2 Ra1 29.Bb2+- (29.Be6?! Be6 30.Qc3 Bd5 31.f3 gf3 32.Kf2 Rh1 33.Qc5 Rh2 34.Kf1 Rh1 35.Kf2 Rh2 36.Kf1 Rh1 37.Kf2=)) 25...e4 (better 25...Nc3! 26.Qc3 Qf5 27.Rh8 Qf3 28.Ke1 Rh8-+) 26.Be6+- Be6 27.Qe4 (better 27.Bb2 Rh3 28.Qe4+-) 27...Nc3-+ 28.Kf1 Ne4 29.Kg2 Bd5 30.Rh8 Rh8 31.Bb2 Nd2 32.f3 (32.e4 Be4 33.f3 gf3 34.Kg1 Nf4 35.Ra3 Nh3 36.Kh2 f2 37.Rf3 Nf4) 32...Nf3 (32...Bf3 33.Kg1 Ne4 34.Bf6 Rh1) 33.Bf6 (33.Rc1 Rh2 34.Kf1 Ne7 35.e4 Be4 36.Rc3 Nf5 37.Rf3 gf3 38.Be5 fe5 39.b6 Ng3 40.Ke1 Bc2 41.b7 Kb8 42.a5 Re2) 33...Nfe5 (33...Rh2 34.Kf1 Bc4) 34.Kf2 (34.e4 Be4 35.Kf2-+) 34...Rh2 35.Ke1 (35.Kf1 Bc4 36.Ke1 Bd3 37.Be5 Ne5 38.Kd1 Bc2 39.Ke1 Nf3 40.Kf1 Bd3) 35…Rh1 (35...Rh1 36.Kd2 Ra1-+; 35...Nd3 36.Kf1 Bf3 37.b6 Rh1) 0–1. retiponziani (2010) – Zavkar (2045), ChessWorld.net, 2019.

5.Nf3 Be6 6.d4 ed4 7.Nd4 Bd5=.

5.Nf3 Ne7 6.Be2 0-0 7.d3 (7.d4 Bb6=) 7...Be6 8.0-0 a6 9.c4 (9.d4!? Bb4 10.c3=) 9...ab5+= 10.cb5 Ra2 11.Ra2 Ba2 12.Nbd2 Bf7 13.Qc2 Nd7 14.Ra1 Bg6 15.e4 (15.Nh4 d5+=) 15...f5 16.d4 ed4 17.Bd4 (17.Nd4 Bd4 18.Qc4 Kh8 19.Qd4 Nf6=) 17...Kh8 (17...fe4 18.Ne4 Rf3 19.Bf3 Bd4 20.Qc4 d5 21.Qd4 de4 22.Bg4+/–) 18.Qb2 Bd4 19.Nd4 Rf6 (19...fe4?? 20.Ne6 Rg8 21.Nd8 Rd8 22.f3+-) 20.Qc2? (20.Bf3 Nc5 21.ef5 Nf5+=) 20...Nc5 (better is 20...fe4!? 21.Qb3 Nc5-+) 21.ef5–/+ Nf5 22.Nf5 Bf5 23.Qc4 Qg8 24.Qc3 Rf8 25.h3 Qf7 26.Qf3 Be6 27.Qg3 Qf6 28.Ra7 Bd5 29.Bf3–/+ Bf3 30.Nf3 Qb2 31.Ng5 Qf6?? 32.Nf3–/+ h6 33.Ra3 Ne4 34.Qh4 Qh4 35.Nh4 Kh7 36.f3 Nc5 37.Re3? Rf7?? 38.g4–/+ g5 39.Nf5 d5 40.Kg2 Rd7 Black gets strong initiative 41.Re7 Re7 42.Ne7 d4 43.Nd5 Ne6-+ 44.Kg3 c6 45.bc6 bc6 46.Nf6 Kg6 47.Ne4 c5 48.h4? gh4 49.Kh4 c4 50.Kg3 c3 51.Nf2 c2 52.Nd3 Nc5!? (52...Nc5 53.Nc5 c1Q-+) 0–1. Genne,Rene – Esper,Christian, Pontresina SEM–HT II, 2000.

5.Nf3 Bg4 6.Be2=.

5.Nf3 Bg4 6.h3 Bh5 7.d4 Bb4 8.c3 Ba5 9.de5 fe5 10.Qd5 c6 11.Qe6 Ne7 12.Ba3 c5 13.Ng5 h6 14.Ne4 Bc7 15.Bd3 Qd7 16.Qb3 Bf7 (16...c4 17.Bc4 (worse is 17.Qc4 d5 18.Qa4 de4 19.Be4 Bd8–/+) 17...d5 18.Nc5 dc4 19.Qa4+=) 17.c4 Qe6 18.Nbc3 Nd7 19.Rd1 b6 (19...0-0 20.Bb2=) 20.Be2 Rd8 21.0-0 Nf6 22.Rd2 0-0 23.Rfd1 Bg6 24.Bf3 Ne4 25.Ne4?? (better is 25.Be4!? Be4 26.Ne4+=) 25...Rf3+= 26.gf3 Qh3 (26...Bh5!? 27.Kh2 Bf3-+) 27.Ng3= h5 28.e4 h4 29.Nf1 Rf8 (29...Bh5 30.Rd3 d5 31.cd5 Rd6-+) 30.Nh2+= Rf4 (30...Bf7 31.Bc1=) 31.Qd3 Bh5 Increases the pressure on the backward pawn 32.Qf1 Qe6 33.Bc1 Rf6 34.Kh1 (34.a3 Bf3 35.Nf3 Rf3=) 34...h3 (34...Bf3 35.Nf3 Rf3 36.Rd3=) 35.Rd3= Ng6 36.Bg5 Rf7 37.Ra3 Bb8 38.Qd3 Nf4 39.Bf4 Rf4 40.Rg1 Kh7 (40...Bf7 41.Ra4=) 41.Rg3 (41.Ng4+/–) 41...Qh6 (41...Rh4!?+=) 42.Qf1 Rh4 43.Rh3 Bf7 44.f4! Qf4?? (44...ef4 45.Rh4 Combination; 44...Rf4 45.Rh6 Pinning (45.Rh6 Deflection); 44...Qf4 45.Rh4 Double attack (45.Rh4 Decoy)) 45.Rh4+- Qh4 46.Rh3 Qh5 47.Rh5 Bh5 48.Qh3 Kh6 49.Qe6 Bg6 50.Ng4 Kg5 51.f3 Bh5 52.Qf5 Kh4 53.Kg2 g6 54.Qf6 g5 55.Nh6 1–0. Novikov,Konstantin Ivan (2215) – Smolskiy,Mikhail (2040), Tula Sinitsin mem, 2007.

4.Kf2 d6 5.Nf3 Bg4 (5...Nf6 6.Nc3+-) 6.h3 Bh5 7.g4 (7.Nc3 Nf6+-) 7...Bg6 8.Nc3 Nf6 9.d3 Nbd7 10.Kg3 (10.Qd2 0-0+-) 10...h5 (10...0-0 11.Kh2+-) 11.Bg2 hg4 (11...0-0 12.Qd2+-) 12.hg4 Rg8 (12...Rf8 13.Nd2 Nc5 14.Ba3+-) 13.Nh4 Bh7 (13...Nc5+-) 14.Bb7 Rb8 15.Bc6 e4 (15...Rb6 16.e4 Rc6 17.bc6+-) 16.Ne4 Kf8 (16...Be4 17.de4 Rb6 18.e5 de5 19.Nf5+-) 17.Nf6 (better 17.Nd2 a6 18.a4 Nc5+-) 17...Nf6 (17...gf6 18.Qc1 Ne5 19.Be5 fe5 20.Qh6 Rg7 21.Nf3+-) 18.e4 Qc8 (18...Qe7 19.Qd2 Qe6 20.Nf5+-) 19.g5 Ne4 20.de4 Qe6 21.g6! Bg6 (21...fg6 22.Nf3 Combination; 21...Bg6 22.Bd5 Combination) 22.Bd5 Qd7 23.Ng6 fg6 24.Rf1 (24.Qf3 Ke8 25.Bg8 Ke7+-) 24...Ke7 25.Rf7 (25.Rf7 Ke8 26.Rd7 Rf8 27.Bc6 Rf6 28.Qh1 Rf8 29.Qh3 Rg8 30.Rf1 Rb5 31.Qe6) 1–0. DEFFM – GuestVFRC, freechess.org, 2019.

4.Kf2 Nf6 5.Nf3 c6 6.Be5 (6.Ne5 d6 7.Nf3 cb5 8.Bf6 Qf6+-) 6...Ng4 7.Kg1 Ne5 8.Ne5 Qb6 (8...Qg5 9.Nc4+-) 9.e3 0-0 (9...cb5 10.Nc3 a6 11.Qh5+-) 10.a4 (10.Nc3 Qc7 11.Nd3 d6+-) 10...cb5 11.ab5 f5 (11...Qf6 12.d4 d6+-) 12.Bc4 d5 (12...Kh8 13.Qh5 Qf6 14.Nf7 Rf7 15.Qf7 Qf7 16.Bf7+-) 13.Bd5 Be6 (13...Kh8 14.Qh5 Qf6 15.Nf7 Rf7 16.Qf7 Qf7 17.Bf7+-) 14.Nc4 Qc5 (14...Qb5 15.Be6 Kh8 16.Qf3+-) 15.Be6 (15.Be6 Kh8 16.Nc3+-) 1–0. DEFFM – GuestJYDS, freechess.org, 2018.

4.Kf2 Nf6 5.g3 +-.

4.Kf2 Qh4 5.g3 Qe4 6.Bg2 (6.Nf3 d6 7.Nc3 Qb4+-) 6...Qb4 7.Be5 Qc5 8.d4 Qf8 9.Bc7 Qb4 10.a4 Qe7 11.Ra3 d6 12.Re3 Be6 13.Bb8 Rb8 14.c4 a5 15.d5 Qf6 16.Nf3 Nh6 17.de6 fe6 18.h3 Rd8 19.g4 g5 20.Qd4 e5 21.Qe4 b6 22.Nc3 Qe7 23.Nd5 Qa7 24.Ng5 0-0 25.Ke1 Rd7 26.Rf1 Rf1 27.Bf1 Rg7 28.Nf3 Nf7 29.Nf6 Kh8 30.h4 Rg6 31.g5 Rf6 32.gf6 h5 33.Ng5 Nh6 34.f7! Qe7 35.Rf3 Nf7 36.Qh7# 1–0. riverborne – Pelle3, Live Game Caissa's Web, 2005.

4.Kf2 Qh4 5.g3 Qf6 6.Ke1 Qb6 (6...a6 7.Nf3 d6 8.Kf2+-) 7.a4 (7.Be5 f6 8.Bf4 d5+-) 7...a5 (better is 7...d6+-) 8.Be5 f6 9.Bb2 Nh6 10.e4 d6 11.Be2 0-0 12.Nc3 Nd7?! 13.Nd5 Qc5 14.Ba3 Qd4 15.c3 Qe4-+ 16.Nc7 Ra7?? 17.Nf3 b6 18.Bd6 Qe6?? 19.Ne6 (19...Re8 20.Nc7+-) 1–0. riverborne – Pelle3, Live Game Caissa's Web, 2005.

4.Kf2 Qh4 5.g3 Qf6 6.Nf3 d6 7.Nc3 +-.

(--> 1.b4 e5 2.Bb2 Qf6 3.b5 Bc5).

4.Nf3 d6 5.e3 (--> 1.b4 e5 2.Bb2 Qf6 3.b5 Bc5 4.e3 d6 5.Nf3).

4.Nc3 d5 5.e3 +=.

4.Nc3 Ng4 5.e3= d5 6.Be2 Nf2 (better is 6...Nf6!?=) 7.Kf2+/– Qf6? (better is 7...d4 8.Ne4 Qh4 9.Ng3 de3 10.Ke1 f6+/–) 8.Nf3+- 0-0? (8...Be6+-) 9.Nd5 Qf5 (9...Qd6 10.Bc4 e4+-) 10.Nc7 Nd7 (10...e4 11.Na8 ef3 12.Bd3+-) 11.Na8 Nf6 (11...e4 12.g4! Qf4 13.d4 ed3 14.Qd3+-) 12.h3 Ne4 13.Kg1 b6 (13...Ng3 14.Be5 Nh1 15.Kh1+-) 14.Nc7 (14.Be5 Bb7 15.Nc7 Nd2 16.Qd2 Bf3+-) 14...Ng3 15.Be5 Nh1 16.d4 Ng3 17.Bg3 Be7 18.Ne5 (18.Bd3 Qd7 19.Ne5 Qd6+-) 18...Bg5 19.Qd2 Qe4 20.Nc4 Be6 21.d5 Bd7 (21...Rd8 22.Rd1 Qg6 23.Ne6 fe6 24.Bf3+-) 22.Bd3 Qe7 23.Bd6 Be3 24.Qe3 Qe3 25.Ne3 Rd8 26.Nc4 Bb5 27.Nb5 1–0. Fritz 11 – nn, internet, 2011.

4.c4 0-0 5.e3 d6 6.Nc3 a6 7.a4 Bf5 8.Be2 Nbd7 9.d4 ed4 10.ed4 Bb4 11.Nf3 ab5 12.ab5 Ne4 13.Qc1 (13.Qb3 Nc3 14.Ra8 Ne2 15.Qb4 Qa8 16.Ke2 Re8 17.Kd2 Qd8–/+) 13...Qe7 14.Ra8 Ra8 15.Nd2? (better 15.Kf1 Nc3 16.Bc3–/+) 15...Nc3-+ 16.Bc3 Re8 17.0-0 Bc3 (17...Qe2?! 18.Bb4 Bd3 19.Rd1=+) 18.Qc3 Qe2 19.Nf3 Qd3 20.Qb4 (20.Rc1 c5 21.bc6 bc6-+) 20...Bg4 21.Re1 (21.Qb1 Qc4 22.Rc1 Qd5-+) 21...Re1 22.Qe1 (22.Ne1 Qd4 23.h3 Be2-+) 22...Qc4 (worse 22...Bf3 23.gf3 Qc4 24.Qe7-+) 23.Qe8 Nf8 24.h3 (24.Qe7 Qb5 25.Ne1 Qe2-+) 24...Bf3 25.gf3 Qd4 0–1. henkf – insuk, gameknot.com, 2012.

4.c4 d5 5.e3 (5.cd5 Qd5 6.Qc2 0-0=+) 5...dc4 (5...d4 6.Nf3 de3 7.de3 Qd1 8.Kd1=+) 6.Bc4 Nbd7 (6...Bd6 7.d4 ed4 8.Bd4=) 7.Nc3 (7.d3 0-0=) 7...Nb6=+ 8.Be2 Bf5 9.Nf3 e4 10.Ne5 (10.Qc2 ef3 11.Qf5 fg2+=) 10...Nbd7 (10...Qe7 11.Qc2=+) 11.Nc4 (11.d4 Bb4=) 11...a6 (11...0-0 12.d3=) 12.a4 (12.Na5 Qb8 13.ba6 ba6=) 12...ab5=+ 13.Nb5 0-0 14.Qb3 (14.0-0 Nd5=+) 14...Be6 (14...Be7 15.Qc3=+) 15.0-0 Bc4 (15...Be7 16.d4=+) 16.Bc4 (16.Qc4 c6 17.Nd4 Bd6=) 16...h6 (16...c6 17.Nd4=) 17.Qc3 (17.d3 c6 18.Nd4 Qc7+=) 17...Re8 (17...c6 18.Nd4=) 18.Rfd1 (18.d4 ed3 19.Qb3 Ne5=) 18...c6= 19.Nd4 Qc7 20.Bb3 Bd6 21.g3 Nc5–/+ 22.Bc2 b6 23.Rf1 Nd5 24.Qc4 Qd7 25.f3 Nf6 26.fe4 Nfe4 27.Nf5 Nd2?? 28.Qg4+- f6 29.Rfd1 h5 30.Qg6 Ncb3?? 31.Nh6 Kf8 32.Bb3 Nf3 33.Kg2 Re3 34.Rd6! Nh4 35.gh4 Qh3 36.Kg1 Ke7 37.Nf5 Qf5 38.Qf5 Kd6 39.Rd1 Kc7 40.Qd7 Kb8 41.Qd8 Kb7 42.Rd7 Ka6 43.Qa8 1–0. NN – ChessMaster3000, 1992.

4.c4 d6 5.Nf3 =+.

4.d4 ed4 5.Bd4 Bd4 6.Qd4 0-0 7.Nc3 a6 8.ba6 Na6 9.0-0-0 d6 10.e4 Be6 11.Nf3 Nb8 12.e5 Nc6 13.Qh4 Ng4 14.Qd8 Rfd8 15.Ne4 (better is 15.Rd2 de5 16.Bd3-+) 15...d5 (< 15...Nce5 16.Ne5 Ne5 17.Nc3-+; < 15...Nge5 16.Ne5 Ne5 17.Nc3-+; 15...de5?! 16.Rd8 Rd8 17.h3-+) 16.h3 (16.Nc5 Nf2 17.Bb5-+) 16...de4 17.Rd8 Rd8 18.hg4 ef3 19.gf3 Ne5 20.Bg2 Ng6 21.a3 Nh8 (better is 21...Nf4!? 22.Rh2-+) 22.Re1 c5 23.Re5 Rd5 24.Re4 b5 25.f4 Rd4 26.f5 Re4 27.Be4 Bc4 28.f4 Be2 29.g5 Bc4 30.c3 h5 31.Kd2 h4 32.Bg2 f6 33.g6 Kf8 34.Kc2 Ke7 35.Bf3 h3 36.Bh1 Bf1 37.Bd5 (37.c4 bc4 38.Kd2-+) 37...Bg2 38.c4 Bd5 39.cd5 h2 40.a4 ba4 41.Kc3 h1Q 42.Kc4 Kd6 43.Kb5 (43.Kd3 Qd1 44.Ke3 a3 45.Kf2 a2 46.Kg2 Qg4 47.Kh2 c4 48.Kh1 a1Q 49.Kh2 Qag1) 43...Qb1 44.Ka6 (44.Ka5 a3 45.Ka6 a2 46.Ka5 a1Q) 44...a3 0–1. Golem_01 – Ufim_130, WB, 2001.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 0-0 8.Be5 d6 9.Bb2 c6 10.c4 (10.Nf3 Be6+/-) 10...cb5 11.cb5 Qa5 (better 11...Bf5!?+=) 12.Bf6+- gf6 13.Bd3 Bd7 (13...f5 14.Qh5+-) 14.Qh5 f5 15.Qg5 (15.Nf3 Qa1+-) 15...Kh8 16.Qf6 Kg8 17.Nh3 Qa3?? (better 17...Qd8 18.Qh6 Qe7+-) 18.0-0 (better 18.Na3 Ba3 19.Ng5+-) 18...Qd3+/- 19.Nf4 Qb5?? (better 19...Qe4 20.Nh5 Qg4+=) 20.Nh5 Qf1 (20...Bd4 21.ed4 Qf1 22.Kf1 Bb5 23.Kg1 Re8 24.Qg7) 21.Kf1 Bb5 22.Kg1 Bd4 23.ed4 Re8 24.Qg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 0-0 (better 7...d6!?=) 8.Be5+= d6 9.Bb2 Bd7 (9...Re8 10.Nf3+=) 10.Nf3 (10.Qf3!?+-) 10...Qe8 (better 10...d5!?+/-) 11.Bf6+- (11.Bf6 gf6 12.d4+-) 1-0. GuestGPPJ – GuestKSSH, freechess.org, 2020.

4.e3 a6 5.Be5!? ab5 6.d4+=.

4.e3 a6 5.Be5 ab5 6.Qf3 d6 (6...Be7!?+=) 7.Bf6+/- Qf6 8.Qf6 gf6 9.Bb5 Bd7 (9...c6 10.Bf1+/-) 10.Bd7 Nd7 11.Ne2 Rg8 12.0-0 Ne5? (better 12...Bb6+/-) 13.d4+- Nf3 (13...Ba3 14.Na3 (14.de5?! Bb2+/-) 14...Ra3 15.de5 fe5 16.Rfb1+-) 14.Kh1 Bb6 (14...Nh4 15.dc5 dc5 16.g3+-) 15.gf3 (15.gf3 d5 16.Nbc3+-) 1-0. DEFFM – SorryYouLose, freechess.org, 2020.

4.e3 d5 5.Be5 d4 6.Nf3 a6 7.ed4 (7.Bd4 Bd4 8.Nd4 0-0+-) 7...Bb6 8.ba6 (better 8.Nc3+-) 8...Ra6? (better 8...0-0+-) 9.Ba6+- Qe7 (9...Na6 10.Nc3 0-0+-) 10.Bb5 c6 11.0-0 cb5 12.Bb8 1–0. GuestDVDX – GuestSFLW, freechess.org, 2020.

4.e3 Bd6 5.Qf3 0-0 6.Qf5 g6 (6...Re8 7.Nf3=) 7.Qg5+= c6 (7...Nd5 8.Qd8 Rd8 9.Nf3+=) 8.a4 (8.Nf3 a6 9.a4 Be7 10.Qe5 d5+/–) 8...Kg7 9.Nf3 e4?? (9...h6 10.Qg3 Nh5+=) 10.Ne5 (better is 10.Nh4 Be7 11.Nf5 Kg8 12.Ne7 Qe7 13.Bf6+-) 10...Be7= 11.Ng4 d5 12.Nf6 Bf6 13.Bf6 Qf6 14.Qf6 Kf6 15.Be2 a6 16.c4 (16.b6!?=) 16...dc4=+ 17.Bc4? (better is 17.bc6 Nc6 18.Nc3=) 17...ab5-+ 18.Bb3 Bf5 19.0-0 ba4 (19...Nd7 20.f3 ef3 21.Rf3-+) 20.Bc2? (better is 20.Ra4 Ra4 21.Ba4-+) 20...b5 21.Rd1 (21.f3 ef3 22.Rf3 Ke6 23.Bf5 gf5-+) 21...Rd8 (21...Na6 22.f3 ef3 23.Bf5 Kf5 24.gf3-+) 22.Nc3 a3 (22...Re8!? 23.Rdb1-+) 23.Ne4 Ke7 24.d3 (24.d4 Nd7-+) 24...Be4 25.de4 b4 (25...Rd1 26.Bd1 Nd7 27.f4-+) 26.Rd4 c5 (26...Na6 27.Kf1-+) 27.Rd8 Kd8 28.Bb3 Nd7 29.Bf7 Ke7 30.Bd5 Rd8 31.h3 (31.Rc1 Rb8-+) 31...Nb6 32.Ba2 c4 33.Bb1 (33.Kf1-+) 33...Rd1 34.Kh2 c3 35.Kg3 c2! 0–1. Steingraeber,Barbara – Wessel,Kai, remoteschach.de, 2003.

4.e3 Qe7 5.c4 a6 6.a4 0-0 7.Nc3 c6 8.e4 d6 9.Be2 Be6 10.Nf3 Ng4 11.0-0 f5 12.d4 Ba7 13.h3 fe4 14.Ne4 Nf6 15.Nf6 gf6 16.de5 de5 17.Ba3 c5 18.Bc1 Kh8 19.Ne1 Rg8 20.Kh1 Nd7 21.f4 ef4 22.Bf4 Rae8 23.Bd6 Qg7 24.Ra3 Nb6 25.Qc2 Bc4 26.Bc4 Nc4 27.Rg3 (better is 27.Qc4!? Re1 28.Rg3 Rf1 29.Qf1+=) 27...Qf7+= 28.Rg8 Qg8 29.Bh2? (better is 29.Qf2+=) Ne3-+ (29...Ne3 30.Qc3 Nf1 31.Qf6 Qg7 32.Qf1 Qa1-+) 0–1. Martine,Jean_Marie (1860) – Burgaud,Jacques (1870), France, 2000.

4.Be5 0-0 5.e3= Nd5 (5...d6 6.Bc3=) 6.a3 (6.Qf3!? Nb4 7.Na3+=) 6...d6= 7.Bg3 (7.Bb2 Be6=) 7...a6 (7...Be6 8.Nf3=) 8.c4 Nb6? (8...Nf6 9.d4 Bb6 10.Bd3+=) 9.a4?? (better is 9.d4 ab5 10.dc5 Nc4 11.cd6 cd6 12.Nd2 Na3 13.Bd3+-) 9...a5 10.Nc3 Bb4 11.Nd5 Nd5= 12.cd5 Nd7 13.Rc1 Nc5 14.f3 Re8 15.Rc4 b6 16.Qc2 Bb7 17.Rh4 g6 18.Rd4 Nd7 19.Bh4 g5 20.Rg4 h6 21.Bf2 Bd5 22.e4 Be6 23.Rg3 d5 24.Bd4 de4 25.h4? Bd6-+ 26.Ne2 Bg3 27.Ng3 ef3 28.Kf2 fg2 29.Bg2 Rb8 30.Ne4 Bf5 31.hg5 Be4 32.Be4–/+ Qg5?? 33.Bh7?? Kf8-+ 34.Be3 Qf6 35.Kg2 Qg7 36.Kf2 Nf6 37.Bh6?? Ng4 38.Kf3 Nh6 39.Be4 Qg4 40.Kf2 Re4 41.Rh6 Qf4 42.Kg2 Re2 43.Kh3 Qh6 44.Kg3 Rc8 45.Qf5 Qd6 46.Kf3 Rce8 47.Qh3 Qd3 (48.Kf4 R2e4 49.Kg5 R8e5 50.Qf5 Qd2 51.Kh5 Rf5) 0–1. riverborne – mask1, Live Game Caissa's Web, 2005.

4.Nf3 d6 5.d4 ed4 6.Bd4 Bd4 7.Nd4 =+.

5.Be5 d5 6.d4 Bb4 7.c3 Be7 8.Bd3 g6 (8...Nbd7 9.Nf3+=) 9.Nf3+/- Nh5 10.0-0 (better 10.h3+/-) 10...f5? (better 10...f6!? 11.Bg3 a6+/-) 11.Qb3 Be6 12.c4 b6? (better 12...Nd7+-) 13.Nc3 Nd7 14.cd5 Bf7 15.a4 Bd6 16.h3 (16.Rfc1 Nhf6+-) 16...Be5 (16...Qe7 17.Bd6 cd6 18.Rfc1+-) 17.Ne5 Ne5 (17...f4 18.Nc6 Qg5 19.Ne4+-) 18.de5 Ng7 (18...Qe7 19.e6 Be8+-) 19.e6 Be6 20.de6 Kh8 21.Bc4 Ne6 (21...Rc8+-) 22.Be6 Qd6 23.Rad1 Qd1 (23...Qe5+-) 24.Rd1 Rae8 25.Rd7 h5 (25...Re7 26.Re7 Rf7 27.Qd5 Kg7 28.Qd4 Kh6 29.Qh4 Kg7 30.Rf7 Kh8 31.Rh7) 26.Bg8! Rg8 Theme: Deflection from f7 (26...Re6 27.Qe6 Rf7 28.Qf7 c5 29.Qg7) 27.Qf7 Ref8 (27...Re7 28.Qe7 c5 29.Qh7) 28.Qh7 1-0. GuestGPPJ – GuestZNTP, freechess.org, 2020.

5.Be5 d5 6.Nf3 c6 7.c4 (7.d4 Bb4 8.c3 Be7+/-) 7...cb5 8.cb5 Re8 9.Be2 Ng4 (9...Bg4 10.d4 Bf3 11.Bf3+= (11.dc5? Be2 12.Qd4 Bb5-+)) 10.Bb2+/- (10.Bb2 a6 11.Qb3+/-) 1-0. DEFFM – GuestJWHX, freechess.org, 2020.

5.Be5 Nd5 6.Nf3 (6.Qg4 Nf6 7.Qf4+/–) 6...f6? (6...d6 7.Bg3+=) 7.Bb2 (7.Bc4 fe5 8.Bd5 Kh8+/–) 7...a6 (7...Nb6!?+/–) 8.Bc4+- c6 9.a4 (9.Nc3 ab5 10.Bb3 Kh8 11.Nd5 cd5+-) 9...ab5 (9...d6 10.d4 Bb4 11.Bc3+-) 10.ab5+- Kh8?? (better is 10...Ra1 11.Bd5 cd5 12.Ba1 Qb6+/–) 11.Ra8 Nb6 12.Rb8 Nc4 13.Bd4 Bd4 14.Nd4 c5 15.Nb3 Qb6 16.Nc3 Qa7 17.Qe2 Ne5 18.Rc8! Rc8 19.f4 Ng6 20.Kf2 Ne7 21.Ra1 Qb6 22.Na4 Qe6 23.Nac5 Qd5 24.c4 Qf5 25.Nb7 Qg6 26.Nd6 Rd8 27.b6 f5 28.c5 Nc6 29.Qc4 Rf8 30.b7 h5 31.Ra8 Nb8 32.Nd4 Kh7 33.N4f5 Qf6 34.Qe4 g6 35.Qe7 Qe7 36.Ne7 g5 37.f5 Kg7 38.d4 Kf6 39.Ndc8 Nc6 40.Nc6 dc6 41.b8Q Kf5 42.Nd6 Kg4 43.Qf8 Kh4 44.Nf5 Kg4 45.h3 1–0. pumpkin (2255) – gdraper (1840), net–chess.com, 2006.

5.Be5 d6 6.Bb2 c6 7.a4 a6 8.d4 Qa5 (better 8...Bb6!?+=) 9.Qd2+- Bb4? (better 9...Qd2 10.Nd2 Ba7+-) 10.c3 Nd5 11.cb4 Qb4 12.Nc3 ab5 (12...Nc3 13.Qc3 Qc3 14.Bc3 ab5 15.ab5 Ra1 16.Ba1+-) 13.ab5 (better 13.Nd5!? Qd2 14.Kd2 cd5 15.Bb5 Nc6+-) 13...Ra1 14.Ba1 Nc3 15.Bc3 (15.Qc3?! Qb1 16.Ke2 Qb5 17.Qd3 Qd5+-) 15...Qb1 16.Qd1 Qg6 17.Nf3 Bg4 18.Bd3 Bf3 19.gf3 (19.Bg6?! Bd1 20.Bh7 Kh7 21.Kd1 cb5+/-; worse 19.Qf3 Qd3 20.Bd2 c5-/+) 19...Qg2 20.Ke2 d5 21.Qg1 Qh3 22.Qg5 f6 (22...Qd7 23.Bb4 Re8 24.Qg4+-) 23.Qf5 (23.Qg4 Qg4 24.fg4 Nd7+-) 23...Qf5 24.Bf5 cb5 (24...Re8 25.Rb1+-) 25.Be6 Kh8 26.Rb1 Re8 (26...Na6 27.Bd5 b6 28.Ra1+-) 27.Bd5 1-0. DEFFM – GuestTDGF, freechess.org, 2021.

5.Be5 d6 6.Bc3 Bd7 (6...a6 7.Nf3=) 7.Qf3+= c6 (7...a6 8.Bf6 Qf6 9.Qf6 gf6 10.Nc3+=) 8.Bf6 gf6 (8...Qf6!? 9.Qf6 gf6+-) 9.Bd3+- Qc8? (better 9...cb5!? 10.Nc3 Nc6+-) 10.Nc3+- cb5?? (10...f5+-) 11.Nd5 Re8 (11...f5 12.Ne7 Kg7 13.Nc8 Bc8 14.Bf5 Nc6+-) 12.Qh5 f5 13.Nf6 Kf8 14.Qh6 Ke7 15.Nd5 Kd8 16.Qf6 Re7 17.Qe7 1–0. Marekt – Carlo Troy Mavusa, internet, 2019.

5.Be5 Qe7 6.Nf3 (6.Bc7 d6 7.Ba5 d5+/-) 6...d6+= 7.Bb2 Bg4 8.d4 Bb6 9.Be2 Nbd7 10.Nbd2 c5 11.bc6 (11.0-0 a6+/-) 11...bc6 12.0-0 Rab8 13.Ba3 h6? (13...Rfe8 14.Nc4 c5 15.Rb1+=) 14.h3 (14.Ne5! Ne5 15.de5 Be2 16.ef6 Qe3 17.fe3 Be3 18.Kh1 Bd1 19.Rad1+-) 14...Bh5 (14...Bf5 15.Nc4 c5 16.Rb1+/-) 15.Nc4 Bc7 (15...Ne4 16.g4 Bg6 17.Nfe5 Ne5 18.de5+=) 16.c3 (16.Nfe5 Be2 17.Qe2 Qe6 18.Nc6 Ra8+-) 16...Qe6 (16...Ne4 17.Rc1+=) 17.Ncd2 (17.Qa4 c5+/-) 17...Rfe8 (17...Nd5 18.Ng5 hg5 19.Bh5+/-) 18.Bc4 (18.Qa4!?+/-) 18...d5+= 19.Be2 Bg6 20.c4 Nb6 (20...Rb7 21.Rc1+=) 21.Rc1+/- Ne4 22.c5 (22.cd5 Nd5 23.Ne4 Be4+/-) 22...Nd7+= 23.Qa4 Ndf6 24.Bb4 (24.Ne4 Ne4 25.Ne5 (25.Qa7 Bg3 26.Qa4 Bf2 27.Rf2 Nf2-/+) 25...Be5 26.de5=) 24...Nh5 (better 24...Ng3 25.Rfe1 Ne2 26.Re2 Rb7=) 25.Rfd1?? (better 25.Ne4 Be4 26.Qa7+/-) 25...Nf2!-+ 26.Kf2 (26.Kf2 Qe3 Mate attack) 26...Qe3 27.Kf1 Ng3 (27...Ng3 28.Ke1 Qe2) 0-1. zembelek (2045) - jaier (2005), Rated Blitz game, lichess.org, 2013.

5.Be5 Re8 6.Nf3 Ng4 7.Bb2 d5 8.d4 Bd6 9.Nbd2 c6 10.a4 Qc7 11.Bd3 Nh2? (better 11...a6+=) 12.Nh2+- Bh2 13.Qh5 (13.Qh5 Bd6 14.Qh7 Kf8 15.Qh8 Ke7 16.Qg7+-) 1-0. DEFFM – GuestVNCH, freechess.org, 2021.

5.Nf3 e4 6.d4 ef3 (better is 6...Bb4 7.Nfd2 a6=+) 7.dc5+/– fg2 8.Bg2 d6 9.c6 (9.cd6 cd6 10.Nc3 a6+/–) 9...d5 (9...bc6 10.bc6 Na6 11.Qf3=) 10.Nc3 (better is 10.Bh3! Ne8 11.Bc8 Qc8 12.Qd5 bc6 13.Qf3+=) 10...bc6= 11.bc6 Nc6 (11...Be6!? 12.Rg1 Re8=) 12.Nd5+/– (< 12.Bd5 Rb8 13.Bb3 Ne5 14.Qd8 Rd8=) 12...Nd5 13.Bd5 Bb7?? (better is 13...Qd6 14.Qd2 Rb8+=) 14.Qg4+- g6 15.0-0-0 h5 (15...Qe7 16.Bc6 Bc6+-) 16.Qg6 1–0. TheWishingTree – JimWa, Caissa's Web Live Game, 2004.

5.a3 0-0 6.d4 ed4 7.ed4 Bb6 8.Be2 Ne4 (8...Re8 9.Nf3–/+) 9.Nf3=+ Ba5 10.c3 Bg4 11.0-0 Nd7 (11...Re8 12.Re1=) 12.Nfd2 (12.Qa4 Bb6=) 12...Bf5 13.Nc4 Bb6 14.Nb6 Nb6 15.c4 Qg5 16.Bc1 Qf6 17.Ra2 a6 18.Bb2 (18.f3 Ng5 19.Nc3 Ne6 20.ba6 ba6=) 18...ab5=+ 19.d5 Qg5 20.cb5 Bh3 21.Bf3 Rfe8 22.Kh1 (22.Re1 Bf5=) 22...Bd7=+ 23.Nc3 (23.Be4!? Re4 24.Nc3=+) 23...Nc3–/+ 24.Bc3 Bb5 25.Re1 Na4 (25...Re1 26.Be1 Nc4 27.Bc3–/+) 26.Bd2 Bc4?? (better is 26...Qh4–/+) 27.Bg5 Nc3 28.Re8 Re8 29.Qd2 Na2 30.h4 h6 31.Bf4 g5 32.hg5 hg5 33.Bg5 Re5 34.Bh6 Bd5 35.Bd5 Rh5 36.Kg1 (36...Nc3 37.Bb7+-) 1–0. Dopper,Johan – Hoogstrate,Johan, 1991.

5.a4 Nbd7 6.Nf3 0-0 7.d4 (7.Be2 e4 8.Nd4 Ne5=+) 7...ed4 8.ed4 Re8 (8...Bb4 9.c3 Ba5 10.Be2=+) 9.Be2 Bb4 10.c3 Ba5 11.0-0 Nd5 12.Qc2 Nf4 13.Bd3 Nd3 14.Qd3 Nb6 15.Na3 (15.Nbd2 Qf6 16.Nb3 Bf5-/+) 15...Qf6 16.Rab1? (better 16.Nd2 Bg4 17.Qg3-+) 16...Bf5-+ 17.Qd2 (17.Qd1 Bb1 18.Nb1 Qf5-+) 17...Bb1 18.Rb1 Na4 19.Nc4 (19.Qc2 Nb2 20.h3 d5 21.Rb2 Qf4-+) 19...Qf5 20.Ra1 (20.Qd1 Qb5 (20...Nc3?! 21.Bc3 Bc3 22.Rb3-+; 20...Nb2?! 21.Rb2 Bb6 22.Ne3-+) 21.Ne3 Nb2-+) 20...Qb5 21.Na3 (21.Qc2 Qc4 22.Ra4-+) 21...Qb2 22.Qb2 Nb2 23.c4 (23.Nb5 Bb6 24.Kf1 a6-+) 23...Re2 24.g3 (24.c5 dc5 25.dc5 Nd3-+) 24...Rae8 25.Nb5 (25.Rb1 Be1-+) 25...Nc4 26.Na7 (26.Ra4 d5 27.Ne5 Bb6-+) 26...Rb2 27.Kg2 Bb6 28.Nh4 Bd4 29.Rf1 Ne3 (29...Ne3 30.Kf3 Nf1 31.Kg4 Rf2 32.Nf3 Re4 33.Kf5 Rf3 34.Ke4 Nd2 35.Kd4 c5 36.Kd5 Rd3) 0-1. Bushwacker (1910) - docjan (2560), ChessWorld.net, 2009.

5.c3 Bg4 6.Be2 Be2 7.Ne2 e4 8.0-0 Nbd7 9.f3 ef3 10.Rf3 Ne5 11.Rh3 Nc4 12.Bc1 Qe7 13.d4 Bb6 14.Na3 Na3 15.Ba3 a6 16.ba6 Ra6 17.Bb2 0-0 18.c4 Raa8 19.Qb3 Rfe8 20.Rf1 Ng4 21.Nf4 Qe4 22.Nd5 Re6 23.Rhf3 Nh6 24.Rf4 Qg6 25.Nb6 cb6 26.Qb6 Re3 27.Qb7 Ree8 28.R4f3 Rab8 29.Qc6 d5 30.Qg6 fg6 31.Bc3 dc4 32.a4 Nf5 33.a5 Re4 34.d5 Re3 35.g4 Rf3 36.Rf3 Nd6 37.Be5 Rd8 38.Rc3 Ne4 39.Rc4 Nd2 40.Rc3 Rd5 41.a6 Re5 42.Rc8 Kf7 43.a7 Ra5 44.a8Q Ra8 45.Ra8 Nf3 46.Kg2 Ne5 47.Ra7 Kf6 48.Ra6 Ke7 49.g5 h6 50.h4 hg5 51.hg5 Kf7 52.Kg3 Nd3 53.Rd6 Nc5 54.Kg4 Ne6 55.Rd7 Ke8 56.Rb7 Kd8 57.Kh4 Nd4 58.Kg3 Nf5 59.Kf4 Ke8 60.Ke5 Kf8 61.Rb6 Kf7 62.Rc6 Ng3 63.Rc7 Kg8 64.Kf4 Nf5 65.Rd7 Kf8 ½–½. Bonetti, Shane – HIARCS, 30 secs/move, 2001.

5.Nc3 0-0 6.Na4 Bb4 7.a3 –/+.

5.Nc3 Bf5 6.Qf3 (6.Be2 0-0=+) 6...Qc8 7.Nd5 (7.e4 Be6=+) 7...Nd5 8.Qd5 c6 9.bc6 (9.Qb3 0-0=+) 9...bc6 (9...Nc6 10.c3–/+) 10.Qf3 (10.Qc4 Be6 11.Qc3 Qb7=) 10...Bc2 (10...0-0 11.Ne2=+) 11.Rc1= Bf5 (11...Bg6 12.Be5 0-0 13.Bf4=) 12.Rc5 (12.Be5!? 0-0 13.Bb2=) 12...dc5=+ 13.Be5 f6 14.Bd6 (14.Bg3 Qe6–/+) 14...Qe6 15.Bc5 (15.a3 Nd7–/+) 15...Nd7 16.Bd4?? (better is 16.Bd6 Be4 17.Qf4-+) 16...Rb8-+ 17.Qd1 Rb1 18.Qb1 Bb1 19.Ba7 Qa2 20.Bd4 Bc2 21.f4 Qb1 22.Kf2 Qd1 23.Nf3 Ke7 24.g4 Be4 25.Bg2 Qc2 26.Bc3 Rb8 27.Ra1 Bf3 28.Bf3 Rb3 29.Kg3?? Rc3 30.dc3 Qc3 31.Ra6 c5 32.f5 Qe5 33.Kf2 Qh2 34.Ke1 Qg1 35.Kd2 Qf2 36.Be2 c4 37.Re6 (37.Ra3 Nc5 38.g5 Nb3 39.Kc3 Qe3 40.Kc4 Nd2 41.Kb4 Qe2-+) ½–½. Langguth,Wilhelm – Blaszczyk,Frederic, corr ICCF Cup8/9 V026, 1990.

5.c4 a6 6.Nc3 ab5 7.cb5 0-0 8.Nf3 e4 9.Nd4 Bd4 10.ed4 d5 11.Be2 Re8 12.0-0 c6 13.d3 (13.a4 Qb6=) 13...e3 (better 13...cb5!? 14.a3 Nc6 15.Nb5 Bf5=) 14.fe3+= Re3 15.Qd2 Qe7 (15...Re8 16.a4+=) 16.a4+- Nbd7 17.Ba3 Qe8 18.Bf3 Nf8 19.a5! Ng6 (19...Ra5 20.Nd5 Decoy) 20.bc6 bc6 21.Bc5 Nf4? (better 21...Nh4!? 22.Be4! Ng4+-) 22.Be4 de4 23.Qe3 Nd3 24.Rf6! gf6?? (24...Nc5 25.Rf2 Nd3 26.Ne4 Ba6+-) 25.Ne4 Kh8 (25...Kg7 26.Qd3 Qe6+-) 26.Qh6 Nc5 27.Nf6 (27.Nc5?! Ra5 28.Qf6 Kg8 29.Qg5 Kh8+-) 27...Bf5 28.Ne8 (28.dc5?! Qe5 29.Rf1 Qc5 30.Kh1 Qa5= (30...Ra5?? 31.Nh5 Qg1 32.Kg1 Ra2 33.Qg7)) 28...Re8 29.dc5 Bg6 30.a6 Kg8 31.a7 (31.a7 Ra8 32.Qf4 Kg7 33.Qb8 Be4 34.Qa8 Kg6 35.Qb8 Kg5 36.Qe5 Bf5 37.a8Q Kg6 38.Qah8 Kh6 39.Qf5 f6 40.Qhh7) 1–0. Silent Move (2115) – idjakboz, redhotpawn.com, 2015.

5.c4 Bb4 6.a3 Ba5 7.Nf3 0-0 8.Be2 Bf5 9.0-0 Be4 (9...a6 10.d4 e4 11.Nfd2=) 10.d3 Bf5 11.Nbd2 c6 12.Nb3 (12.e4 Bg4=) 12...Bc7 13.a4 a6 14.c5 ab5 15.ab5 Ra1 16.Qa1 Nbd7 17.Rc1 (better 17.cd6 Bd6 18.Ne5 Be5 19.Be5 Ne5 20.Qe5 Bd3 21.Rd1+=) 17...Nd5? (17...cb5 18.cd6 Bd6 19.Ne5 Ne5 20.Be5 Be5 21.Qe5 Bd3 22.Rd1=) 18.e4 (better 18.cd6 Bd6 19.Ne5+/-) 18...Be4?? (better 18...Nf4 19.Bd1 Be6 20.cd6 Bd6 21.bc6 bc6 22.Rc6 Bb3 23.Rd6 Bd1 24.Qd1 Qc7+=) 19.de4+- Nf4 20.Bf1 f5 (20...cb5 21.cd6 Bd6 22.Bb5+- (22.Be5?! Ne5 23.Ne5 Qe7+-)) 21.cd6 Bd6 22.Ne5 (22.ef5 cb5 23.Bb5 Rf5+-) 22...Qg5 23.Nd7 (better 23.g3 Be5 24.Be5 fe4 25.Bd6+-) 23...Ng2?? (better 23...Nh3! 24.Kh1 Nf2 25.Kg1 Nh3 26.Kh1 Nf2 27.Kg1 Nh3 28.Kh1 Nf2=) 24.Bg2+- Rd8 25.e5 f4 (25...Rd7 26.Rd1 cb5 27.Rd6+-) 26.Nd4 (26.ed6?! f3 27.Kf1 Qb5 28.Kg1 Qg5 29.Nf6 gf6=; 26.bc6?! f3 27.Kf1 Qg2 28.Ke1 Qg1 29.Kd2 Qf2 30.Kc3 Qe3 31.Kc4 bc6+-) 26...Rd7 27.ed6 Rd6 28.Nf3 (28.Qa2 Kf8 29.Ba3+-) 28...Rd3 29.Qa8 (29.Ng5 Rd1 30.Rd1 Kf8 31.Bg7 Ke7 32.Qe5) 29...Kf7 30.Qb7 Kg6 31.Qc6 (31.Qg7 Kf5 32.Qf7 Qf6 33.Qf6 Kg4 34.Qg5) 31...Kh5+- 32.Ng5 (32.Ng5 Kg4 33.Bf3 Rf3 34.Qf3 Kf5 35.Qh5 f3 36.Rc5 Kf4 37.Qf3) 1-0. Nf3 (2025) – Birkasaur, Rated Classical game, lichess.org, 2013.

5.Ne2 a6 6.d4 ed4 7.Nd4 ab5 8.Bb5 c6 9.Be2 0-0 10.Nb3 Nbd7 11.N1d2 Re8 12.0-0 d5 13.c4 Ba3 14.Ba3 Ra3 15.Qc2 Ra4 (15...Ne5 16.cd5 Nd5 17.Rfd1=+) 16.Rfd1 Qc7 (16...Qe7 17.cd5 Nd5 18.Nf3=) 17.Nd4 Ra8 18.cd5 Nd5 19.Nc4 (19.Rab1 N7f6=) ½–½. nordlicht – kingcrusher, mySchach.de, 2005.

5.Ne2 Bg4 6.f3 Bh5 7.Ng3 Bg6 8.Nc3 Nbd7 9.Na4 Bb4 10.Nc3 d5 11.a4 Qe7 12.Na2 Ba5 13.Bd3 e4 14.fe4 de4 15.Be2 h5 16.0-0 Qc5 (16...Qe6 17.Bd4=+) 17.Nc3 (17.Nc1!? Qg5 18.Nb3=) 17...h4=+ 18.Nh1 c6 (18...0-0-0!?=+) 19.Nf2= Bc7 20.Ba3?? (better is 20.bc6 bc6 21.Nh3=) 20...Qe5-+ 21.Ng4 (21.g3 hg3 22.Ng4 gh2 23.Kh1 Ng4 24.Bg4-+) 21...Ng4 22.Bg4 (22.Rf4 Ne3! 23.de3 Qc3 24.bc6 bc6 25.Qc1-+) 22...Qh2 23.Kf2 Bg3 24.Ke2 Qg2 25.Rf2 Qf2 0–1. Otte,Marco – Plomp,Micha, Wag.Intcomp, 1997.

5.Nf3 Bd7 6.d4 Bb6 (better is 6...ed4!? 7.ed4 Bb6=) 7.de5+/– de5 8.Ne5 Qe7 9.Nd2 Bb5?? (better is 9...Ba5+/–) 10.Bb5+- c6 11.Bd3 Nbd7 12.Nd7 Qd7 13.Bf6 0-0 (13...gf6 14.Qf3 Ba5+-) 14.Qh5 (14.Bh7 Kh8 15.Qh5 Qg4 16.Qh6 Qg5 17.Qg5 gf6 18.Qh6 Be3 19.fe3 Rfe8 20.Bg6 Kg8 21.Qh7 Kf8 22.Qf7) 14...gf6 (14...h6 15.Bf5 Qe8+-) 15.Qh7 1–0. Trkn – guest3712, ICC, 2005.

5.Nf3 e4 6.d4 Bb4 (worse 6...ef3 7.dc5 fg2 8.Bg2 dc5 9.Qd8 Kd8 10.Nc3+=) 7.Nfd2 d5 (7...a6!?=) 8.c4+= c5 9.dc5 Nbd7 10.c6 bc6 11.bc6 Nc5 12.Bc3 Bg4 13.Qc2 Bc3 14.Nc3 (worse 14.Qc3 Rc8 15.f3 Be6=) 14...d4 15.c7 (worse 15.Nde4 Nfe4 16.Ne4 d3–/+; worse 15.Nce4 Nfe4 16.Ne4 d3=+) 15...Qd6 16.Nde4 Nce4 17.Ne4 Qb4 18.Qd2 Qd2 19.Nd2 de3 20.fe3 Rc8 21.h3 (21.Be2 Rc7 22.Rf1 Ke7+=) 21...Bf5+= 22.Be2 Rc7 23.0-0 Be6 24.Rf4 Ke7 25.Nb3 (25.Rb1 Rhc8+=) 25...Rhc8 26.Rc1 Nd7 27.Re4 g6 28.Kf2 f5 29.Rd4 Ne5 Increasing the pressure on the isolated pawn on c4 30.Nd2 h5 31.e4 f4 32.h4 Rc5 33.Rb1 Bc4 (33...Kf6 34.a4+=) 34.Rb7 Ke6 35.Nc4 Nc4 36.Ra7 Ne5 37.Ra6 R8c6 38.Rda4 Ng4 39.Kf3 Ra6 40.Ra6 Ke5 41.Bd3 Rc3 42.Ke2 Nf2 Attacking the isolated pawn on e4 43.Ra5 Ke6 44.Kf2 Rd3 45.a4 Ra3 46.Rg5 ½–½. Panza (2535) – gorme (2410), ChessWorld.net, 2011.

5.Nf3 e4 6.Nd4 0-0 7.Nb3 Bb6 8.a4 a5 (8...a6 9.a5 Ba7 10.f3=) 9.Be2 Bf5 (9...Nbd7 10.0-0=) 10.0-0 d5 (10...Be6 11.f3=) 11.c4 (11.f3 Nbd7=) 11...dc4 12.Bc4 Re8 (12...Ne8 13.f3 Nd6 14.Bd5=) 13.Nd4 (13.f3 Nbd7+=) 13...Bg6= 14.Ne2 Nbd7 (14...Bc5 15.Nf4 Bf5 16.d3=) 15.Nf4 Bf5 16.Qb3 (16.d4 ed3 17.Bd3 Bd3 18.Qd3 Qe7=) 16...Qe7 17.Nc3 Nc5 18.Qa2 (18.Qc2 Rad8=) 18...Rad8 (18...c6 19.Ba3=) 19.Ncd5 ½–½. Lorentzen,Oeystein – van den Braak,Jelle, corr 3GMM½–03, 1998.

5.Nf3 Be6 6.c4 c6 7.Be2 Nbd7 (7...a6 8.0-0 ab5 9.d4 ed4 10.ed4=) 8.Nc3 Nb6 (8...cb5!? 9.Nb5 0-0=) 9.Qb3+= e4 10.Ng5 d5 11.bc6 bc6 12.cd5 cd5 13.0-0 a6 (13...0-0 14.Nb5+=) 14.f3 Bd7? (better 14...ef3 15.Rf3 Rb8+-) 15.fe4+- h6 (15...0-0 16.ed5 Nfd5 17.Nd5 Qg5 18.Nb6 Rab8 19.Nd7 Rb3 20.ab3 Qd5 21.Nf8 Qd2+-) 16.Nf7! Kf7 17.e5 Be6 (17...Rf8 18.ef6 g6 19.Ne4+- (19.Nd5?! Be6+-)) 18.Bh5 Ke7 (18...Kf8 19.ef6 g6 20.Bg6+-) 19.ef6 gf6 20.Rf6!! Rf8 (20...Kf6 21.Na4 Double attack (21.Ne2 Decoy)) 21.Ne4 Nc4 (21...Qc7 22.Nc5 Rf6 23.Bf6 Kf6 24.Rf1 Ke7+-) 22.Qb7 Qd7 23.Re6 (23.Re6 Kd8 24.Qa8 Kc7 25.Qa6 Qe6 26.Qe6 Bb4 27.Rc1 Rf4 28.Be5 Kb7 29.Qd5 Ka7 30.Bd4 Kb8 31.Qb5 Ka8 32.Rc4 Rf1 33.Kf1 Bc5 34.Nc5 Ka7 35.Ra4) 1–0. Ddgs – Nalchik, internet, 2019.

5.Nf3 Qe7 6.Be2= e4 (6...0-0 7.0-0=) 7.Nd4 0-0 8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 d5 12.c4 (12.f3 Bd6=) 12...Nbd7 (12...dc4 13.Bc4 Bg4 14.f3 ef3 15.Nf3=) 13.Nc3 (13.cd5!? Nb6 14.Nb3 Nfd5 15.Nc5 Qc5 16.Bd4=) 13...dc4=+ 14.Na4 (14.Bc4 Nb6 15.Be2 Bd4 16.ed4 Re8–/+) 14...Ne5 (14...Bd6 15.f4–/+) 15.Qc2 (15.Nc5 Qc5 16.f3 Qd5–/+) 15...Bb4 (15...Bd6 16.Bc4 Nc4 17.Qc4–/+) 16.Nb2=+ Rd8 17.Nc4 Nc4 18.Bc4 Ng4 19.Be2 Bd6 20.h3 Nf6 (20...Nh2 21.Rc1=) 21.d3= Re8 (21...Bd7 22.Rd1=) 22.de4 Ne4 23.Bd3 (23.Rd1 Qe5 24.Nf3 Qe7=) 23...Qe5+= 24.Nf3 Qe7 25.Bb2 Bd7 26.Ra1+= f5 27.Ra7 Bc8 28.Bd4 Kh8 29.Be4 fe4 30.Nd2 Kg8 31.Nc4 Bb4 32.b6 Bc5 33.Ra8 cb6 34.Nb6 Bb6 35.Rc8 Bd4 36.Qc4 Kf8 37.Rc7 b5–/+ 38.Qc6 Qf6 39.ed4 Qc6 40.Rc6 Rb8 41.Kh2 b4–/+ 42.Kg3 b3 43.Rc1 b2 44.Rb1 g5 45.Kg4 Rb5 46.d5 Ke7 47.Kf5 ½–½. Rudbeck,Joergen – Skaug,Torbjorn, corr ICCF TT–4–90 SF, 1995.

5.Nf3 Qe7 6.h3 a6 (6...e4 7.Nd4=+) 7.a4 (7.d4 ed4 8.Nd4 0-0=+) 7...ab5 (7...0-0 8.d4 ed4 9.Nd4=+) 8.ab5 Ra1 9.Ba1 0-0 10.c4 (10.d4 Bb4 11.c3 Ba5=+) 10...Be6 (10...Bf5 11.d4 ed4 12.Bd4=+) 11.Be2 Nbd7 12.0-0 Ra8 13.Bb2 (13.Nc3 Bb4=+) 13...c6 (13...e4 14.Ng5=+) 14.d4= Bb6 (14...ed4!? 15.ed4 Bb6=) 15.de5+= Ne5 16.Be5 (16.Ne5 de5 17.bc6 bc6 18.Be5 Bc5+=) 16...de5 17.bc6 bc6 18.Ne5 Bh3 (18...Qc7!? 19.Nf3 Bc5+=) 19.Nc6+/– Qc7 (19...Qc5 20.Bf3 Bg4 21.Bg4 Ng4 22.Qg4 Qc6 23.Nc3+/–) 20.gh3 (20.Bf3 Be6 21.Ne7 Qe7 22.Ba8 Bc4+=) 20...Qc6+= 21.Bf3 Ne4 22.Qd5 (22.Nd2 f5+/–) 22...Qd5 (better is 22...Qg6!? 23.Bg2 Re8+=) 23.cd5+- Nd6 24.Kg2 f5 25.Nc3 Ra3 26.Rb1 Be3+= 27.fe3 Rc3= 28.Re1 Kf7 29.Kg3 Kf6 30.h4 g6 31.Kf4 Rc4 32.e4 fe4 33.Be4 Re4 34.Re4= Ne4 35.Ke4 h6 36.Kf4 g5 ½–½. Wessel,Volkmar – Birkholz,Frank, Schleswig Holstein–ch, 1988.

5.g3 0-0 6.Bg2 Bd7?? (6...a6 7.a4–/+) 7.a4?? (better is 7.Bb7 Nc6 8.bc6+-) 7...c6 8.Ne2 Qe7 (< 8...cb5 9.d4 ed4 10.ed4+=) 9.0-0 e4 (< 9...cb5 10.Bb7 Bc6 11.Bc6 Nc6 12.ab5+/–) 10.d4 Bb6 11.a5 Bd8 12.b6 (12.bc6 Nc6 13.Nd2 Bf5=+ (< 13...Ba5 14.d5 Nd5 15.Nb3 Ne3 16.fe3+/–; 13...Na5?! 14.d5=)) 12...a6 (better is 12...ab6!? 13.ab6 Ra1 14.Ba1 Bb6–/+) 13.Ba3 Qe8 (better is 13...Bg4!?=) 14.Bd6+/– Be7 15.Be7 Qe7 16.c4 c5 17.d5 Qd6 18.Nbc3 Re8 19.Qc2 Bf5 20.f4 ef3 21.Qf5 fg2 22.Kg2 Re5? (better is 22...Nbd7+=) 23.Qf6?? (better is 23.Qc8 Re8 24.Ne4+-) 23...gf6-+ 24.e4 Nd7 25.Rae1 Kh8 26.Nf4 Rg8 27.Nh3 Rh5 28.Ne2 Qe5 29.Nef4 Rh6 30.d6 Qd4 31.Rd1 (31.Nd5 Qc4 32.Nf2 Qa2-+) 31...Qe4 32.Kg1 f5 33.Nd5 (33.Rd5 Qc4 34.Rfd1 Qc3-+) 33...Rd6 (33...Rg3 34.hg3 Rh3 35.Rf4 Rh1 36.Kf2 Rh2 37.Kg1 Qg2) 34.Rfe1 (34.Rf4 Qe2 35.Nf2 Ne5 36.Rf5 Nc4-+) 34...Qc2 (35.Rc1 Qb2-+; 34...Qc4!? 35.Ne3 Rd1 36.Nc4 Re1 37.Kf2-+) 0–1. MasterofDisaster – polo01, Live Game Caissa's Web, 2004.

5.h3 0-0 6.a4 c6 7.c4 Be6 8.Ba3 (8.d4 ed4 9.Bd4 Ne4=+) 8...Nbd7 9.Qc2 Nb6 (9...Qa5!?–/+) 10.Bc5=+ dc5 11.d3 (11.bc6 bc6 12.Nf3 Qd6=) 11...Qd6 (11...cb5 12.ab5 a6 13.ba6 Ra6 14.Ra6 ba6 15.Nf3=+) 12.Ne2 (12.Nc3 cb5 13.Nb5 Qd8=+) 12...Rfd8 13.Ng3 e4 14.de4 (14.de4 Nc4 Combination; 14.Ne4 Ne4 Combination) 14...Qd1?? (better 14...Nc4 15.Bc4 Bc4=+) 15.Qd1+- Rd1 16.Kd1 Rd8 (16...cb5 17.cb5 Na4 18.e5+- (worse 18.Ra4 Bb3 19.Kc1 Ba4+-)) 17.Kc1 cb5 (17...Nc4 18.Bc4 Bc4 19.bc6 bc6 20.Rd1 Rd1 21.Kd1+-) 18.ab5 Nc4 (18...Ra8 19.Nd2+-) 19.Bc4 (19.Ra7!? b6+-) 19...Bc4 20.Rd1 Bd3 (20...Rd1 21.Kd1 a6 22.ba6 Ba6 23.Nc3+-) 21.Nc3 (21.Ra7!? h5 22.Nc3 h4+-) 21...a6 22.ba6 c4 (22...ba6 23.e5 Ne8 24.Ra6 c4+-) 23.ab7 Nd7 24.Ra8 (24.Ra8 Nb8 25.Nf5+-) 1–0. Nieswandt,Joseph – Walther,Renate, 2rd Bayern–ch Seniors, 2010.

5.h3 0-0 6.Ne2 =+.

5.h3 Bf5 6.d4 ed4 7.ed4 Qe7 8.Be2 Bb4 9.c3 Ba5 10.Nd2 (10.Nf3 0-0 11.0-0 Ne4=) 10...c6 (10...Nd5 11.Qa4 b6 12.0-0-0–/+) 11.a4 (11.Qa4 Bc7=+) 11...0-0 12.Ngf3 (12.Nc4 Bc7 13.Nf3=+) 12...Ne4 (12...Nd5!? 13.Ra3 Nf4-+) 13.Rc1 (13.Ne4!? Be4 14.0-0=) 13...cb5 14.ab5 a6 15.ba6 Ra6 16.Ba6?? (better is 16.0-0 Rb6 17.Ba1=) 16...Nc3-+ (16...ba6 17.0-0+/–; 16...Na6 17.0-0+/–) 17.Be2 Nd1 18.Rd1 (18.Kd1 d5 19.Rc5-+) 18...Bd3 19.0-0 Be2 (19...Qe2?! 20.Rfe1–/+) 20.Rfe1 Re8 21.d5 Nd7 22.Nd4 Bd1 23.Re7 Re7 24.Nf5 (24.Nc4 Re1 25.Kh2-+) 24...Re1 25.Nf1 Be2 26.N5e3 (26.N5g3 Bc4 27.Ba3 Nc5 28.Bc5 dc5-+) 26...Bb6 27.Bc3 Be3 (better is 27...Rb1-+) 28.Be1 Bc5 29.Ng3 Bc4 30.Bc3 Bd5 31.Nf5 Nf6 (31...Be4 32.Ng7 b5 33.Kf1-+) 32.Ne7?? (32.Bf6 Bg2 33.Kg2 gf6 34.Kf3-+) 32...Kf8 33.Nf5 b5 34.Kf1 b4 35.Bb2 Ne4 36.Bg7 Ke8 (better is 36...Kg8 37.f3-+) 37.Bd4 (37.f3 Nd2 38.Ke2 Nc4-+) 37...Bd4 38.Nd4 b3 39.Nb3 Bb3 40.f3 (40.Ke2 d5-+) 40...Bc4 41.Ke1 Nc5 42.g4 d5 43.Kd2 (43.h4 Nd3 44.Kd2 d4-+) 43...Ke7 (better is 43...d4 44.Kc2 Nb3-+) 44.f4 (44.h4 d4 45.Kc2 Nb3-+) 44...Kd6 (44...d4 45.Kc1 Ne4 46.Kb2-+) 45.g5 (45.Kc3-+) 45...d4 46.h4 d3 (better is 46...Ne4 47.Kd1 d3-+) 47.h5 (47.Kc3 Nb3 48.Kc4-+) 47...Ne4 48.Ke3 (48.Kd1 d2 49.Kc2 Be2 50.g6 d1Q 51.Kb2 Qd2 52.Ka3 Qc3 53.Ka2 Bc4 54.Kb1 Nd2) 48...d2 49.Ke4 (49.Kd4 d1Q 50.Kc4 Qc2 51.Kd4 Nc5 52.Ke3 Qd3 53.Kf2 Ne4 54.Kg1 Qg3 55.Kh1 Nf2) 49...d1Q 50.Kf5 (50.f5 Qd2 51.Kf3 Bd5 52.Kg4 Qg2 53.Kh4 Bf3 54.g6 Qg4) 50...Be6 (50...Qd5 51.Kg4 Qg2 52.Kh4 Qf2 53.Kg4 Be6 54.f5 Bf5) 51.Kf6 Qd4 0–1. MasterofDisaster – Tony2009, Live Game Caissa's Web, 2004.

6.a4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c6 10.Be2 cb5 11.cb5 Re8 12.0-0 e4 13.Nd4 d5 14.Nc3 (14.Qc2 Bd6=) 14...b6 (14...Bd4 15.ed4 Qe7 16.Qb3=+) 15.d3 ed3 (15...Bd4 16.ed4 e3 17.fe3 Re3 18.Bb2=) 16.Bd3 Nbd7 (16...Bd4 17.ed4 Qd6 18.Re1 Re1 19.Qe1+=) 17.Be2 (17.Nc6!? Qc7 18.Bc2+=) 17...Ne5= 18.Nf3 Attacks the isolani on d5 18...Nf3 19.Bf3 The pressure on the isolated pawn grows 19...Be6 20.Ne2 Ne4 21.h3 f5 (21...Qh4 22.Nd4=) 22.Nd4+= Bf7 (better 22...Qd6!?+=) 23.Nf5+/- Bf8 24.Qd4 Qg5 25.Ng3?? (better 25.g4+/-) 25...Ng3=+ 26.fg3 Qg3?? (better 26...Bc5 27.Qd1 Qe3 28.Kh2 d4=+) 27.Bd5+- (27.Qb6?! Bd6+=) 27...Bd5 28.Qd5 Kh8 29.Qf7 (better 29.Bd4!? Bc5 30.Bc5 bc5 31.Qc5+-) 29...Qe3+/- 30.Kh1 Qe7 31.Qe7 Be7 (31...Re7?? 32.Rf8) 32.Re1 Kg8 33.Bd4 Kf7 34.Bb6 (34.Rc1!?+=) 34...Rb8= 35.Bd4 Rb5 36.Bg7 Bh4 37.Re4 Bg3 (worse 37...Kg7 38.Rh4 Rb2 39.Kh2+/-) 38.Bd4 Rb1 39.Bg1 Bf2?? (better 39...Bc7-+) 40.Rf4+- Kg6 41.Rf2 Rb4 42.g3 Rb3 43.Kg2 Rb2 (43...Rd3 44.Rf8+-) 44.Bh2 (better 44.Rb2 h5 45.Rb6 Kf7 46.g4 hg4 47.hg4 Ke8 48.g5 Kf7 49.g6 Kg7 50.Bd4 Kh6 51.g7 Kh7 52.Rb8 Kg6 53.g8Q Kf5 54.Qd5 Kf4 55.Rb4 Kg4 56.Bf6) 44...Rf2 45.Kf2 h5 (45...Kf5 46.Kf3+-) 46.Kf3 1-0. BeepBeepImAJeep (2665) - PogosBest (2505), lichess.org, 2016.

6.Qc2 a6 7.a4 (7.Nf3 Bg4–/+) 7...Bg4 (7...ab5 8.cb5 Bb4 9.Nf3–/+) 8.Be2 ab5 9.ab5 (9.cb5 Be2 10.Ne2 Bb4=) 9...Ra1 10.Ba1 Qc8 (10...Nbd7 11.Bg4 Ng4 12.Nf3=+) 11.Nf3 Qf5 (11...Bf5 12.Qb3=+) 12.Qf5= Bf5 13.0-0 (13.d4 ed4 14.ed4 Bb6=) 13...Nbd7 14.d4 Ra8 15.Nbd2 (15.Bc3!? Ra2 16.Nbd2=) 15...Bb4=+ 16.Nb3 (16.de5 de5 17.Rd1 Bc2–/+) 16...Ra3 (16...Ra2 17.Bd1 Be6 18.de5–/+) 17.de5 (17.Bd1 Bd3 18.Bb2 Ra8 19.de5 de5 20.Ne5 Ne5 21.Be5 Bc4 (21...Bf1?! 22.Kf1 Ne8 23.Bf3=) 22.Bf6 gf6–/+) 17...de5–/+ (< 17...Rb3 18.ef6 Nf6 19.Nd4+/–) 18.Nfd2? (18.Bd1!?–/+) 18...Bc2 (better is 18...Ra2 19.e4 Ne4 (19...Bd2?! 20.ef5 Bb4 21.Bd3=+; < 19...Rd2 20.Nd2 Ne4 21.Ne4 Be4 22.Rd1+/–) 20.Ne4 Be4-+ (20...Re2?! 21.Ng3 Bc2 22.Ne2 Bb3 23.Rb1 Bc4 24.Rb4 Be2 25.Be5=)) 19.Bb2? (better is 19.Bd1 Bd3 20.Bb2-+) 19...Ra2 20.Bc1 Bb3 21.Nb3 Re2 22.h3 Rc2 23.f4 e4 24.Rd1 Rc3 25.Nd2 Rc1! 26.Rc1 Bd2 27.Rf1 Be3 28.Kh1 h5 29.Kh2 Nb6 30.g3 Nc4 31.Rb1 (31.Re1 h4 32.Re2 hg3 33.Kg3 Nd5-+) 0–1. Hasler,Ulrich – Schaar,M, corr, 1993.

6.Qc2 Bg4 7.Be2=+ Be2 (7...Qd7 8.Nf3=+) 8.Ne2= Nbd7 (8...Re8 9.0-0=) 9.0-0 c6 (9...a6 10.d4 ed4 11.ed4=) 10.a4 (10.d4 ed4 11.ed4 Bb6=) 10...Rc8 (10...Bb4 11.d4=) 11.d4 Bb4 12.de5 (12.Bc3 Bc3 13.Nbc3 Qe7=) 12...Ne5 (12...de5 13.Rd1 Qe7 14.Bc3=) 13.Rd1 Qc7 (13...Qe7 14.Qb3 Bc5 15.Bd4=) 14.Qb3 Ba5 15.Na3 Rfe8 16.Rac1 (16.Rab1 Ne4 17.bc6 Nc6+=) 16...Ne4 17.Nf4 (17.Bd4 Qe7=) 17...Bd2 (17...Ng4 18.Rc2=+) 18.Rc2 (18.Rb1 Qa5 19.Bd4 Bc3=) 18...Qa5 (18...Nc5 19.Qa2 Bb4 20.Nb1=+) 19.Nd3 (19.bc6 bc6 20.Rcd2 Nd2=) 19...Nd3=+ 20.Qd3 Bb4 21.Ra1 Nd2 (21...Rcd8 22.Nb1=+) 22.Rd2 Bd2–/+ 23.Qd4 f6 24.c5? dc5-+ 25.Qg4 Be1 26.Nc4 Qb4 27.Bf6 Rc7-+ 28.bc6 Rc6?? 29.Qg7 1–0. Gross – Vogt, corr, 1985.

6.Nc3 a6 7.Nf3 =+.

6.Nc3 Nbd7 +=.

6.Nc3 Re8 7.Qc2 Be6 (7...Nbd7 8.Be2=+) 8.Nf3= h6 9.Be2 Nbd7 10.0-0 Nb6 11.d4 ed4 12.ed4 Bb4 13.Qb3 Bc3 14.Bc3 Bg4 15.Rfe1 Ne4 16.h3 Nc3 17.Qc3 Bh5 18.a4 Nd7 19.g4 Bg6 20.Bd3 Qf6 21.Bg6 Qg6 22.Nh4 Qg5 23.Nf5 g6 24.Ng3 Qf4 25.Kg2 c6 26.bc6 bc6 27.Qd3 Rab8 28.Re8 Re8 29.Rb1 Nf6 30.Ne2 (30.Rb7!?+=) 30...Qg5=+ 31.f4 Qa5 32.Nc3 d5 33.Rb2 Kf8 (better 33...Qa6 34.Rb4 Ne4 35.Ne4 de4=+) 34.cd5? (better 34.f5!? g5 35.c5=) 34...Nd5–/+ 35.Nd5 Qd5 (35...cd5?! 36.f5 Qe1 37.Qf3= (37.fg6?? Re3 38.Rb8 Kg7 39.Qe3 Qe3-+)) 36.Kg3 c5 37.Rb5 Qd4 (37...Re1!? 38.Rb1 Re4 39.Rb8 Kg7-+) 38.Qd4=+ cd4 39.Rb3 Rd8 40.Rb2? (better 40.Kf2=+) 40...d3-+ 41.Rd2 Ke7 42.Kf3 Rd4 (better 42...Ke6!? 43.Ke3 f5 44.gf5 Kf5-+) 43.Ke3=+ Ra4 44.Rd3 a5 45.g5 (45.Rd5 Ra1=+) 45...hg5–/+ 46.fg5 Ke6 47.Kd2 Rb4 48.Kc3 (48.Re3 Kf5 49.Re7 Kg5 50.Rf7 a4–/+) 48...Rb5 49.h4? (49.Rg3 a4 50.Kc2 Rb3-+) 49...a4 (better 49...Rb4-+) 50.Rd4–/+ Ra5 51.Kb4 Rd5 52.Rc4 Ke5 53.Kc3 (53.Ka4?? Rd4-+) 53...Ra5 54.Kb4 (54.Kb2 Kf5–/+) 54...Ra7-+ 55.Ka3 Kd5 (55...Rd7 56.Rc5 (56.Ka4?? Rd4-+) 56...Kf4 57.Rc4 (worse 57.Ka4 Kg3-+) 57...Kg3 58.Ra4-+) 56.Rb4=+ (56.Ra4?? Ra4 57.Ka4 Ke4-+) 56...Kc5 57.Re4 (57.Ra4?? Ra4 58.Ka4 Kd6-+) 57...Rd7 58.Ra4 (58.Ka4 Rd4 59.Rd4 Kd4-+) 58...Rd4 59.Ra7 Rh4 60.Rc7 (60.Rf7 Rh5=) 60...Kd5 61.Rf7 Rg4 62.Rd7 Ke4 63.Re7 (63.Kb3 Rg5 64.Rd6 Rg2 65.Re6 Kf5-+) 63...Kf4 64.Rf7 (64.Kb4 Rg5 65.Rg7 Rg3-+) 64...Kg3 (64...Kg5!? 65.Kb3-+) 65.Kb3 (65.Rg7 Rg5 66.Kb4 Kh4–/+) 65...Rg5 66.Kc4?? (better 66.Rg7–/+) 66...Rf5-+ 67.Ra7 g5 68.Ra3 Rf3 69.Ra2 g4 70.Kd4 Rf2 71.Ra7 Re2 72.Kd3 Re1 73.Kd2 Re5 74.Rf7 (74.Kd3-+) 74…Kg2 0–1. Silent Move (2115) – Coffehouse (1870), redhotpawn.com, 2014.

6.Nc3 Bf5 7.Be2 (7.Nf3 Bb4=+) 7...Nbd7 (7...Re8 8.Nf3=+) 8.a4 (8.Nf3=+) 8...e4 (8...Re8 9.d3 Re7 10.Nf3=) 9.h3 (better is 9.g4 Bg6 10.h4=) 9...Re8?? (better is 9...Ne5–/+) 10.g4+/– Bg6 11.g5 Ne5 12.gf6 Qf6 13.Qb1 Nd3 14.Bd3+- ed3 15.Nd5 Qg5+/– 16.Kf1 Be4 17.Rh2 Re6? 18.Nf4+- Rae8 19.Ne6 Re6 20.Qd1 h5 21.h4 Qf5 22.f4 Rg6 23.Qe1 Rg4 24.Qf2 Qg6 25.Nf3?? Rf4+= 1–0. Kleist,Werner (1715) – Lange,Lutz (1725), 02 sen. HSen EM06 (Bad Sooden op), 2006.

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

6.d4 ed4 7.Bd4 Bd4 8.Qd4 Re8 =+.

6.d4 ed4 7.Bd4 Bd4 8.Qd4 Bf5 =+.

6.Ne2 Be6 7.d4 Bb4 8.Bc3 –/+.

6.Ne2 Re8 7.Qb3 (7.Nbc3 a6+=) 7...c6 8.d4 ed4 9.ed4? (better is 9.Nd4!? Nbd7 10.Be2+=) 9...Bb6-+ 10.a4 (10.Nd2 cb5 11.cb5 Be6-+) 10...Be6 (better is 10...Ne4!? 11.Nbc3 Ba5 12.Rd1-+) 11.Nd2 Nbd7 12.g3 (12.f3 Nh5-+) 12...Ba5 13.Bc3 Rc8 (13...c5!? 14.0-0-0-+) 14.Bg2–/+ Bg4 15.Bf3 Bf3 16.Nf3 Qe7 (16...d5!? 17.Ba5 Qa5 18.Kf1–/+) 17.Ra2 (17.0-0!? Qe2 18.Ba5 cb5 19.ab5 Qc4 20.Qc4 Rc4 21.Rfe1+=) 17...Bc3–/+ 18.Qc3 cb5 19.ab5 Nb6 20.0-0 Rc4 21.Qb3 Qd7 (21...Nfd5 22.Re1–/+) 22.Kg2 (22.Re1!?+=) 22...Nfd5–/+ 23.Re1 Rb4 24.Qd3 Qb5 (better is 24...Na4!?–/+) 25.Qb5 (25.Nc3 Qc6 (25...Qd3?? 26.Re8) 26.Nd5 Nd5=) 25...Rb5+= 26.Nc3 Re1 27.Nb5 Re7 28.Ra7 Nc8 (28...Rd7 29.g4+=) 29.Ra8= Ndb6 30.Rb8 Rd7 31.Nd2 Kf8 32.Nc4 Attacking the isolated pawn on d6 32...Ke7 33.Na5 Ke6 34.Nb7 Kd5 35.Na5 Re7 36.Nc3 Ke6 37.d5 Kf5 38.Kf3 Kg6 (38...Ra7 39.Nc6 Ra3 40.Nd4 Kg6 41.Ndb5+=) 39.Rb7 (39.Nb5 Rd7+=) 39...Rb7 40.Nb7 Kf5 41.Nd8 Kf6 ½–½. Frischmuth,Uwe (1700) – Wirries,Frank_Michael (1850), Hamburg GER, St Pauli Open–B, 2014.

6.Nf3 Nbd7 7.Be2 a6 8.a4 (8.d4 ed4 9.Bd4 Bd4 10.Nd4 ab5 11.cb5 Nc5=+) 8...Re8 (8...ab5 9.ab5 Ra1 10.Ba1=+) 9.0-0=+ d5 (9...ab5 10.ab5 Ra1 11.Ba1=+) 10.cd5 (10.d4 ed4 11.Bd4 dc4 12.Bc4 ab5 13.ab5 Ra1 14.Ba1 Bd6=) 10...ab5 11.ab5 (11.Bb5 Nd5 12.d4 ed4 13.Bd4 Qe7=) 11...Ra1=+ 12.Ba1 Nd5 (12...e4 13.Nd4 Nd5=) 13.Nc3 ½–½. Fabisch,Christian (2200) – Horvath,Sandor (2295), Gleisdorf, 1989.

6.Nf3 Nbd7 7.Be2 e4 8.Nd4 Ne5 9.d3 (9.0-0 Re8=) 9...Bg4 10.Bg4? (better 10.f3 ed3 11.Bd3=+) 10...Nd3-+ (10...Nfg4?! 11.de4 Qh4 12.g3 Nf2 13.gh4 Ned3 14.Ke2 Nd1 15.Bc3 Nc3 16.Kd3-/+) 11.Kf1 Nb2 12.Qc2 Nc4! 13.Bh3 (13.Qc4 Ng4) 13...d5 14.Nd2 Bd4 15.ed4 Nd6 16.a4 a6 17.ba6 Ra6 18.g3 Rc6 19.Qb3 Rb6 20.Qc3 Qe7 21.Kg2 e3 (21...Rc6!? 22.Qb2-+) 22.Rhe1 e2 23.Nf3 Qe4 (23...Nc4 24.Ra2 Re8 25.a5-+) 24.Kg1 (24.Ra2 Re8-/+) 24...Nc4 (24...Rc6 25.Qb3 Qc2 26.Qa2-+) 25.Ra2? (better 25.Bg2 Qe6 26.Ne5-/+) 25...Rb1 26.Rae2 Qe2 27.Rb1 Ne4 (27...Ne4 28.Qb3 Qf2 29.Kh1 Ncd2 30.Nd2 Nd2 (30...Qd2?! 31.Qb4 Qh6 32.Kg2-+) 31.Qb7 Re8-+) 0-1. Zampier,Alexandre (1605) - Nunez,Benjamin (1850), 4th Floripa Open, 2018.

6.Nf3 Bg4 7.Be2 e4 8.Ng1 (8.Nd4 Be2 9.Qe2 a6=+) 8...Be6 9.f3 (9.d4 ed3 10.Bd3 a6=+) 9...Nbd7 (9...a6 10.Nc3=+) 10.Nc3 (10.fe4 Ne4 11.Nf3 a6=+) 10...Nb6 (10...Ne5 11.fe4 Nc4 12.Bc4 Bc4 13.Nf3–/+) 11.fe4 (11.Qb3 a5 12.ba6 A) < 12...Ra6 13.fe4 (< 13.Ne4 Ne4 14.fe4 Qh4 15.g3 Qe4–/+) 13...Nbd7 A1) 14.Qb7?? Rb6 15.Qb6 Nb6-+ (15...cb6?! 16.a3-+); A2) 14.Nf3+=; B) 12...ba6 13.fe4 a5=+) 11...Nc4–/+ (11...Bc4?! 12.a3 Be2 13.Qe2=) 12.Bc4 Bc4 13.d4 (better is 13.d3!? Be6 14.Qf3–/+) 13...Bb4-+ 14.a4?? (better is 14.Qa4 Bc3 15.Bc3-+) 14...Ne4 15.Qc2 Qh4 16.g3 Qg4 17.Rc1 (17.Nge2 Nc3 18.Bc3 Qf3-+) 17...Rfe8 18.Qd1 Qd1 (18...Qg5 19.Qf3 Nc3 20.Bc3 Re3 21.Kf2 Rf3 22.Nf3-+) 19.Kd1 Nf2 (20.Kd2 Nh1-+) 0–1. 787 – Caissa, caissa.com, 2006.

6.ed4 Qe7 7.Be2 Bb6 8.Nf3 0-0 9.0-0 Bg4 10.a4 Ba5 11.Nbd2 Nbd7 (better 11...Re8!? 12.Bd3 Bd2 13.Qd2 Bf3 14.gf3 d5=) 12.Nb3+/- Bb4? (better 12...Rae8 13.Bd3 b6+/-) 13.c3+- Rae8 14.Re1 Bf3 (14...Bc3 15.Bc3 Qe6 16.Rc1+-) 15.Bf3 (15.gf3?! Nd5 16.cb4 Qg5 17.Kh1 Qh4+/-) 15...Qe1 16.Qe1 Re1 17.Re1 Nc5 (17...Bc3 18.Bc3 Rb8+-) 18.dc5 (18.cb4?! Nb3 19.Bc3 Re8+-) 18...dc5 (18...Bc5 19.Bb7 Rd8+-) 19.cb4 cb4 20.Bb7 1-0. DEFFM – GuestVMYB, freechess.org, 2021.

6.ed4 Qe7 7.Be2 Bb6 8.Nf3 Ba5 9.Bc3 Bc3 10.Nc3=.

6.ed4 Qe7 7.Be2 Bb6 8.Nf3 Bd7 9.0-0+= 0-0 10.Re1 a6 (10...Re8!?+=) 11.ba6+/- ba6 12.Ba6 Qd8 13.Bd3 Bc6 (13...Nc6 14.a3+/-) 14.Nbd2 Nbd7 15.c4 d5 16.a4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bd4 Bd4 7.Qd4 0-0 8.Bd3 c5 9.Qh4 d5 10.Nf3 (10.c3 c4 11.Bc2 Bd7=+) 10...c4–/+ 11.Be2 Qa5 12.Nbd2 Qb5 13.0-0 Nc6 14.Nb3 Bf5 (14...Qa4 15.Rfb1–/+) 15.Nbd4=+ Nd4 16.Nd4 Qd7 17.Rfd1 Rfe8 18.Qg5 Be4 19.Rab1 b5 20.Rb5 Bc2 21.Rc1 (21.Nc2 Qb5) 21...Be4 22.Bf3 (22.Qg3 Rac8–/+) 22...Rab8 (22...Bf3 23.gf3 h6 24.Qg3–/+) 23.Be4=+ Rb5 (23...de4?! 24.Nf5 (24.Rc4?! h6 25.Qc5 Rb5 26.Qb5 Qb5 27.Nb5 Rb8=+) 24...g6 25.Qf6 gf5 26.Qg5 Kf8 27.Qh6 Kg8 28.Rc5=; 23...Ne4 24.Rd5 Qb7 25.Qf5-+) 24.Nf5? (24.Bf5 Qb7 25.Nb5 Qb5–/+) 24...Nh5 25.Bc2 g6 26.g4?? (26.Ba4!? Qf5 27.Qf5 gf5 28.Bb5–/+) 26...Ng7–/+ 27.Nh6 Kf8 28.Ba4 a6 29.Qf4 Rd8 30.Qd4 Qd6 31.Bb5 ab5 32.Qa7 Qd7 33.Qc5 Ke8 34.Qd4 Kf8 35.Qc5 Ke8 36.Qd4–/+ Ne6 37.Qh8 Nf8 38.Qe5 Qe7–/+ 39.Qf4 f6?? 40.Ng8= Qf7 41.Nf6+= Ke7 42.Qe5 Qe6= 43.Qc7 Nd7 44.g5 ½–½. Grau,Jose Maria – Fernandez Martin,Fermin Jordi, CAE Preferente, 1989.

6.Bd4 Bd4 7.Qd4 0-0 8.Nf3 =+.

6.Bd4 Nbd7 7.Bc5 (7.Nf3 Bd4 8.Nd4 Nc5=) 7...Nc5=+ 8.Bc4 (8.Nf3 0-0=+) 8...Nfe4 (better is 8...Be6 9.Be6 fe6=+) 9.Nh3?? (better is 9.Nf3=+) 9...Bh3-+ 10.Bf7 Kf7 11.gh3 Qf6 12.0-0 Qa1 13.Qd5 Ke7 14.c3 Qb2 15.Qh5 Raf8 16.Qh4 g5 17.Qh6 Rf2 18.Qg7 Ke6 19.Qh6 Kf5 (20.Qh4 gh4 21.Nd2 Rg8 22.Kh1 Rf1 23.Nf1 Qg2) 0–1. Langguth,Wilhelm – Gonda,Frank, corr ICCF Cup8/9 V184, 1990.

7.c3 Ba5 8.Bd3 0-0 9.Ne2 Re8 10.0-0 c6 11.a4 d5 12.Qc2 Nbd7 13.Nd2 Nf8 14.bc6 bc6 15.Ba3 Bc7 16.Rab1 Ng6 17.Rfe1 Ng4 18.h3 Nf2? (better is 18...Bh2 19.Kf1 Nf6+=) 19.Kf2+- Bh3? (19...Qg5 20.Kf1+-) 20.Bg6 (20.gh3 Qh4 21.Kg2 Re2 22.Re2 (22.Be2?? Qg3 23.Kf1 Qh3 24.Kg1 Bh2 25.Kf2 Qg3 26.Kf1 Qg1) 22...Nf4 23.Kg1 Qg3 24.Kf1 Qh3 25.Kf2 Qh4 26.Ke3 Re8 27.Ne4 de4 28.Kd2 Ne2 29.Be4 Re4 30.Qb2-+) 20...fg6 21.gh3 Qh4 22.Kg2 Re3 23.Nf3 Rf3 24.Kf3 Qh3 25.Ng3 Qg3 26.Ke2 Re8 27.Kf1 ½–½. Rodriguez Abreu,E – Lopez Gomez,J.R, CAP–01/97 II CAP Ch. Final, 1998.

7.c3 Ba5 8.Bd3 0-0 9.Ne2 Bg4 10.Qc2 Be2 11.Be2 (11.Qe2?? Re8-+) 11...Re8 12.0-0 Qe7 13.Bf3 d5 14.Nd2 (14.Qa4 b6=) 14...Qd6 (14...c6 15.Qa4 Bc7 16.c4=) 15.Nb3+= Nbd7? (better 15...Qb6+=) 16.Na5+- Rab8 (16...Qb6 17.Nb3 Qb5 18.Rae1+-) 17.c4 Ne4 18.cd5 Ndf6 19.Nc4 Qd5 (19...Qd8 20.Rfe1 Ng5 21.Be2+-) 20.Nd2 Rbc8 (20...Re7 21.Rae1 Rbe8 22.Re3+-) 21.Rfe1 Qf5 (21...Qb5 22.Ne4 Nd5 23.Qb3 Qb3 24.ab3+-) 22.Ne4 Ne4 23.Be4 Qh5 (23...Qb5 24.Bh7 Kh8 25.Be4+-) 24.Bb7 Re1 25.Re1 Rf8 26.Ba3 Rd8 27.Qc7 (27.Qc7 Qg5 28.Be7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.c3 Ba5 8.Bd3 a6 9.ba6 Na6 10.Ne2 0-0 11.0-0 Re8 12.Re1 c6 13.Nd2 =.

7.c3 Ba5 8.Bd3 d5 9.Ba3+= c6 (9...c5 10.Bc5 Ne4+-) 10.Nf3+- Bc7 (10...cb5 11.Bb5 Nc6 12.0-0+-) 11.Qe2 (11.0-0 Bd6 12.Re1 Kf8+-) 11...Be6+- 12.Ng5 Qd7 (12...Bd6 13.0-0 Qe7 14.f4 Ba3 15.Na3+-) 13.Bf5 Bd6 14.Ne6 (14.0-0 0-0 15.Ne6 Re8+-) 14...fe6+- 15.Be6 Qe7 16.Bd6 Qd6 17.0-0 (17.Nd2 Kd8 18.0-0+-) 17...Qe7? (17...Kd8 18.c4 Re8+-) 18.Re1+- Ne4 (18...Kf8 19.Nd2 a6+-) 19.bc6 Nc6 (19...bc6 20.Bh3 Kd8+-) 20.Bd5 Nf6 (20...0-0-0 21.Bc6 bc6+-) 21.Bc6 (21.Bc6 Kf7 22.Qe7 Kg6 23.Re3 Rhe8 24.Rg3 Kf5 25.Bd7 Nd7 26.Rg5 Kf4 27.g3 Kf3 28.Nd2) 1–0. GuestGMHQ – GuestWDYJ, freechess.org, 2020.

7.c3 Ba5 8.Bd3 Bd7 9.Qe2 Qe7 (9...Be6 10.Bf5=) 10.Qe7+= Ke7 11.Nf3 Re8 12.0-0 Kf8 13.Nbd2 h6 14.Nb3 a6? (better 14...Bb6+=) 15.Na5+- 1-0. DEFFM – Guestd, freechess.org, 2021.

7.c3 Qe7 8.Be2 Ba5 9.Nf3 0-0 10.0-0 Re8 11.Re1 Qd8 (11...Be6 12.Nbd2+=) 12.Bd3 Bg4 13.Re8 Qe8 14.Nbd2 Nd5 (better 14...a6!? 15.a4 h6+=) 15.Qc2+- g6 16.Re1 (16.Nc4 Bb6 17.Be4 Be6 (worse 17...Qb5 18.Ncd2+-) 18.Nb6 ab6+-) 16...Qd8+- 17.Be4 c6 18.bc6 bc6 19.Qb3 (19.h3 Bf3 20.Bf3 Nd7+-) 19...Be6 (19...Nd7!? 20.h3 Be6+=) 20.c4+- Nf6? (better 20...Ne7!? 21.Ba3 Na6+-) 21.d5+- Ne4? (21...cd5 22.cd5 Bc8 23.Bg6 A) 23...fg6 24.Bf6 Qf6 25.Re8 Kg7 26.Rc8 Bd2 27.Nd2+- (27.Rb8?? Rb8 28.Qd1 Rb2-+); B) 23...hg6?? 24.Bf6 Qf6 25.Re8 Kg7 26.Rc8+-; C) 23...Nbd7+-) 22.Ne4 (22.Re4?! cd5 23.cd5 Bf5+-) 22...cd5 (22...Be1 23.de6 Qb6 24.Qb6 ab6+-) 23.cd5 Be1 (23...Nd7 24.de6 Rb8 25.Nf6 Nf6 26.Bf6 Rb3 27.Bd8 fe6 28.Ba5+-) 24.de6 Bf2 (24...Nd7 25.ed7 Rb8 26.Nf6 Kf8 27.Nh7 Kg8 28.Nf6 Kg7 29.Nd5 Kg8 30.Qe3+-) 25.Kf2 Qb6 26.Qb6 ab6 27.e7 Nc6 28.Nd6 (better 28.Nf6 Kg7 29.e8Q Re8 30.Ne8 Kf8 31.Nd6+-) 28...Ne7+= 29.a3 Nd5 30.Ne5 Attacks the backward pawn on f7 1–0. GuestMBRL – GuestGVFL, freechess.org, 2020.

7.Bd3 Qe7 8.Qe2 Qe2 9.Ne2 0-0 10.0-0 c5 (10...a6!?=) 11.dc5+/- Bc5 12.Bf6 gf6 13.Nbc3 Be6 14.Be4 Rd8?? (better 14...Nd7+/-) 15.Bb7+- Nd7 16.Ba8 Ra8 17.Rfd1 Ne5 18.Ne4 Rd8 (18...Nc4+-) 19.Nc5 1-0. DEFFM – GuestVZMC, freechess.org, 2021.

7.Be2 0-0 8.Nf3 Re8 9.0-0 Nbd7 10.c4 Nf8 11.Nc3 Ng6 12.a4 a5 13.Qd2 Ne4 (13...Bg4!?=) 14.Ne4+/- Re4 15.Bd3 Re8 16.Rae1 Bg4 17.Re8 Qe8 18.Re1 Qd7 19.Be4 c6 20.Ng5 h6 21.f3 (21.Bg6 fg6 22.Ne4+=) 21...hg5 (better 21...Bh5!?=) 22.fg4+/- Qg4 23.bc6 bc6 24.Bc6 Rd8 25.Qc3 Nf4 26.Bf3 Qd7 27.c5 Bc7 (27...dc5!? 28.dc5 Bc5 29.Qc5 Nd3 30.Qa5 Nb2+=) 28.c6+/- Qf5 29.d5 The mate threat is Qxg7 29...f6 30.Qd4 g4 (30...Qc2 31.Ba1+/-) 31.Be4+- Qg5 32.Qa7 Rb8?? (better 32...Re8 33.Bc3 f5 34.Qc7 Re4 35.Re4 fe4 36.Qg7 Qg7 37.Bg7 Nd5+-) 33.Qc7+- Rb2 (33...Re8 34.Qd6 f5 35.c7 fe4 36.Re4 Nh3 37.gh3 gh3 38.Qg3 Qg3 39.hg3 h2 40.Kh2 Rc8 41.d6 Kf8 42.d7 Kf7 43.dc8Q Kg6 44.Qg4 Kh6 45.Qg7 Kh5 46.Re5) 34.Qc8 (34.Qd8 Kf7 35.Qd7 Kf8+-) 34...Kf7 35.Qd7 Kf8 36.Qd8 (36.c7 Nh3 37.gh3 gh3 38.Kh1 Rc2 39.c8Q Rc8 40.Qc8 Kf7 41.Qe6 Kf8 42.Rb1 Qg2 43.Bg2 hg2 44.Kg2 g5 45.Rb7 g4 46.Qc8) 36...Kf7 37.Qd7 (37.c7 Nh3 38.gh3 gh3 39.Kh1 Qg4 40.Qe8 Ke8 41.Bf5 Re2 42.c8Q Kf7 43.Qe6 Re6 44.de6 Ke7 45.Bg4 f5 46.Bf5 d5+-) 37...Kf8 38.Qd6 Kf7 39.Qd7 Kf8 40.c7 Ne2 41.Kh1 Ng3 42.hg3 Qh6 43.Kg1 (43.Kg1 Qc1 44.Rc1 Rg2 45.Kg2 f5 46.c8Q) 1-0. DEFFM – GuestWBVJ, freechess.org, 2019.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bd7 11.Nf3 0-0 12.0-0 Re8 13.Bd3 h6 14.c4 c6 15.Nc3 cb5 16.Nb5 Bb5 17.cb5 Qe7 18.Re1 Qd7 19.Bb2 Re1 20.Qe1 Qg4 21.Ba3 d5 22.Bd6 Nbd7 23.Qa1 h5?? (better 23...g6+/-) 24.Qa8 (24.Qa8 Nb8 25.Qb8 Qc8 26.Qc8 Bd8 27.Qd8 Ne8 28.Qe8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Be2 a6 8.ba6 Na6=+ 9.c3 0-0 10.Nf3 Re8 11.0-0 c6 (11...d5 12.Re1=+) 12.Nbd2 d5 13.Rb1 (13.Re1 Bc7=+) 13...Bf5 14.Rc1 Bc7 15.Nh4 (15.Re1 Bf4=+) 15...Be6 (15...Qd6 16.Nhf3–/+) 16.h3 (16.Re1 Bd6–/+) 16...Nb8 (16...Bd6 17.Re1–/+) 17.a3 (17.Ra1 b6–/+) 17...Nbd7 (17...b5 18.Re1–/+) 18.c4 (18.Re1 b5–/+) 18...Nb6 (18...dc4!? 19.Bc4 Nd5-+) 19.c5=+ Na4 20.Bc3? (20.Rb1 Nb2 21.Rb2 b5 22.cb6 Bb6–/+) 20...Nc3 (20...Ne4 21.Ne4 de4 22.g3-+) 21.Rc3 Ne4 22.Re3? (better is 22.Ne4 de4 23.g3 Bh3 24.Re1-+) 22...Qh4 23.Nf3 (23.Ne4 de4 24.Qb1 Qf4-+) 23...Qf4 24.Re1 Ng5 25.g3 (25.Bd3 Nf3 26.Qf3 Qh2 27.Kf1 Bf4-+) 25...Nh3 26.Kg2 Qh6 (26...Qg4 27.Nh2 Qg6 28.Ng4-+) 27.Rh1 (27.Qb3 Ba5 28.Rh1 Bf5-+) 27...Bg4 (better is 27...Nf2 28.Kf2 Bg3 29.Kg3 Qe3 30.Bd3-+) 28.Ne5 Be5 29.Bg4 Bf6 (better is 29...Nf2 30.Rh6 Nd1 31.Bd1 Bd4 32.Re8 Re8-+) 30.Rh3–/+ Qg5?? (better is 30...Qg6 31.Bh5 Qg5–/+) 31.Qf3?? (better is 31.Rh5 Re3 32.Rg5+-) 31...Re3-+ 32.fe3 Ra3 33.Kf2? (33.Qf4-+) 33...Bd4! 34.Qf4 (34.ed4 Rf3) 34...Be3 35.Qe3 Qe3 36.Kg2 (36.Kf1 Ra1 37.Kg2 Qd2 38.Kf3 Ra3) 36...Ra2 37.Kf1 (37.Be2 Re2 38.Kf1 Qf2) 37…Qc1 (38.Bd1 Qd1; 37...Qf2) 0–1. MasterofDisaster – km5, Live Game Caissa's Web, 2004.

7.Be2 a6 8.Nf3 0-0=.

7.Be2 c6 8.a4 cb5 (8...Ba5 9.c3=) 9.ab5 0-0 10.Nf3 h6 11.0-0 d5 12.Nbd2 Bd7 13.c4 dc4 14.Bc4 Be6 15.Be6 fe6 16.Nc4 Bc7 17.Re1 Re8 18.Qd3 Nd5 19.Bc1 Qf6 20.Nfe5 Nf4 (20...Rd8!?+=) 21.Bf4+/- Qf4 22.Re4 Qf6 (22...Qf8 23.Rg4 Be5 24.Ne5+/-) 23.Rg4 (23.b6 Be5 24.de5 Qg6+-) 23...Rf8+/- 24.Qg3 Qf2?? (better 24...h5 25.Rg6 h4+-) 25.Qf2+- Rf2 26.Kf2 Be5 27.Ne5 b6 (27...g5 28.h4 a6 29.Rc1+-) 28.Rg6 a6 (28...Kh7 29.Re6 a6 30.Re8+-) 29.Re6 Ra7 (29...Kh7 30.Rb6 a5 31.Rb7+-) 30.Re8 Kh7 31.Rb8 1-0. DEFFM – GuestDRDL, freechess.org, 2021.

7.Be2 Be6 8.Nf3 h6 (8...a6 9.Nc3=) 9.a4 c6 10.0-0 cb5 (10...0-0 11.Nc3=) 11.Bb5 (11.ab5 0-0+=) 11...Nbd7 12.d5 (12.a5 Ba5 13.d5 Nd5=) 12…0-0 1–0. GuestXMSD – Guestony, freechess.org, 2020.

7.Be2 Qe7 8.Nf3 Bg4 9.0-0 0-0 10.Re1 a6 (10...Re8 11.Nbd2=) 11.a4 (11.ba6 ba6 12.Nbd2 Qd7+=) 11...a5 (11...ab5 12.ab5 Ra1 13.Ba1=) 12.Nbd2+= Nbd7 13.c4 Qd8 14.Qc2 h6 (14...Bh5 15.Bd3+/-) 15.Bd3 Bf3 (15...Be6 16.Re2+/-) 16.Nf3 (16.gf3?! Nh5=) 16...Nh5 (16...c6 17.Ba3 c5 18.d5+/-) 17.Bh7 Kh8 18.Be4 Rb8 19.Ba3 Ndf6 20.Bf5 Re8 (20...g6 21.c5 Ba7 22.Bd3+/-) 21.c5+- dc5 (21...Ba7+-) 22.dc5 (22.Bc5?! Bc5 23.Re8 Qe8 24.Qc5 g6+/-) 22...Ba7? (22...Re1 23.Re1 Ba7+-) 23.Red1 Nd5 24.Rd5! Qd5 25.Rd1 Rbd8 (25...Qd1 26.Qd1 Rbd8 27.Qc2+-) 26.Rd5 Rd5 27.Be4 Re4 28.Qe4 Rd1 29.Ne1 Nf6 (29...Nf4 30.h3 Ne6 31.Kf1 Bc5 32.Bc5 Nc5 33.Qe8 Kh7 34.Qf7+-) 30.Qe2 Ra1 (30...Rd4 31.Qf3 Re4 32.Nd3+-) 31.Bb2 Ra2 32.b6! cb6 33.Qb5 bc5 34.Bf6 gf6 35.Qb7 Ra4 (35...Ra1 36.Kf1 Kg7 37.Qa7 Ra4 38.Qc5+-) 36.Qf7 Rf4 37.Qa7 c4 (37...Rb4+-) 38.Qb8 Kg7 39.Qf4 c3 40.Qc7 Kg6 41.Nf3 a4 (41...f5 42.Ne5 Kg5 43.Qd8 Kh5 44.g3 a4 45.Qh4) 42.Nh4 Kg5 (42...Kh5 43.Qa5 Kh4 44.Qf5 c2 45.g3) 43.g3 a3 44.Qf4 (44.Qf4 Kh5 45.Qf5; 44.Qc5 Kg4 45.Qf5) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Nf3 0-0 8.Be2 d5 9.0-0 a6 10.a4 ab5 Bf3 (17...Qa8!?=) 18.Nf3+= Na7 (18...Qd6 19.Rb1 Bc7 20.Bb2+=) 19.Bc4+/- Nc6 (19...Nc8 20.Qb3+/-) 20.d5 Nd5? (better 20...Na5!? 21.Ba2 h5+/- (21...Nd5?? 22.Rd1+-)) 21.Rd1+- Nce7 (21...Bf2 22.Kf2 Qb6 23.Nd4+-) 22.Qb3 1-0. onur604 (2320) - StudyOnly251 (2195), Casual Rapid game, 2021.

7.Nf3 0-0 8.Be2 Re8 9.a4 Ba5 10.Bc3 Bc3 (10...c6 11.Ba5 Qa5 12.Qd2 Qd2 13.Nbd2=+) 11.Nc3= Qe7 (11...Bf5 12.0-0=) 12.0-0+= d5 13.Re1 Qb4 (13...Qd6 14.a5+=) 14.Qd2 c6 (14...Bg4 15.a5+=) 15.Rab1 (15.h3 Be6+-) 15...Qd6 16.Bd3 Re1 1–0. GuestGMHQ – GuestFMYT, freechess.org, 2020.

7.Nf3 0-0 8.Be2 Re8 9.0-0 Bf5 10.a4 a5 (10...Ba5 11.Bd3 Bd3 12.Qd3=) 11.Nh4 Bc8 12.c4 Ne4 (12...Nd5 13.Nf3 Nf4 14.Re1=) 13.Nf3 Bf5 14.Bd3 Nd7 15.Qc2 Bg6 (15...Ndf6 16.Nc3 d5 17.c5+=) 16.Re1 Ndf6 (16...Ng5 17.Nbd2 Bd3 18.Re8 Qe8 19.Qd3 Nf3 20.Nf3+/- (worse 20.gf3 Qe6=+)) 17.Nc3+/- Nc3 18.Bg6 hg6 (18...Re1 19.Re1 Na4 20.Bf7 Kf7 21.Qa4+/-) 19.Qc3 Qd7 20.c5 Ba7 21.Re8 Re8 22.Qa5 Bb8 23.Re1 Re1 24.Qe1 dc5 25.dc5 Ba7 (25...c6 26.Qd2 Qe7 27.Qd4+-) 26.Bd4 Qd5 (26...Qd8 27.a5+-) 27.Qe7 Qb3 (27...g5 28.h3 g4 29.hg4 Qc4+-) 28.Qd8 Kh7 29.Ng5 Kh6 30.h4 Qd1 31.Kh2 Ng4 (31...Qb1 32.Qh8 Nh7 33.Qh7) 32.Kg3 Qd3 (32...Kh5 33.Ne6!! Qb3 34.f3 Qf3 35.gf3 Nf6 36.Qh8 Nh7 37.Qh7) 33.f3 (33.f3 Qf3 34.gf3 Kh5 35.fg4 Kh6 36.Qh8) 1-0. wgr069 (2315) - Nacktduscher (2345), Casual Blitz game, lichess.org, 2021.

7.Nf3 0-0 8.Be2 Bg4 9.0-0 Nbd7 10.h3 Bh5 11.Nbd2 Re8 12.c4 (12.a4 c6=) 12...Ne4 (12...Nf8 13.a4 Ba5 14.Re1=+) 13.Ne4 Re4 14.Bd3 Rf4 (14...Re8 15.Bf5=) 15.Qd2+= Rf3 16.gf3 Bf3 (16...Qh4 17.Kh2 Ba5 18.Qe3=) 17.Bh7 Kh7? (better 17...Kh8!?+=) 18.Qd3+- Kg8 19.Qf3 Qh4 20.Rae1 Bd4 21.Bd4 Qd4 22.Re7 (22.Qb7 Rf8 23.Qd5 Qf6+-) 22...Ne5+- 23.Qb7 Rf8 24.Rc7 (24.Qc7?! Nf3 25.Kg2 Nh4 26.Kg1 Nf3 27.Kg2 Nh4 28.Kg1 Nf3=) 24...Nc4 (24...Qd3 25.f3 (25.Qa7 Nf3 26.Kg2 Nh4 27.Kh2 Qf1 28.Kg3 g5 29.Kg4 Qg2 30.Kh5 Qf3 31.Kh6 Nf5 32.Kg5 f6 33.Kg6 Nh4 34.Kh6 Qf4 35.Kh5 Qg5) 25...Qe3 26.Kg2 Qd2 27.Rf2 Qg5 28.Kh2 Qf4 29.Kh1 Qc1 30.Kh2 Qf4 31.Kh1 Qc1 32.Kh2 Qf4=) 25.Qa7 (25.Rc1 d5 26.Rc8 g6 27.Rf8 Kf8+-) 25...Qd3 26.Rc4! Qc4 27.b6 Qf4 (better 27...Qe6 28.Qa4 Qh3+-) 28.b7?? (better 28.Qe7 Rb8 29.Rb1+-) 28...d5?? (better 28...Qg5 29.Kh2 Qf4 30.Kg2 Qg5 31.Kf3 Qf5 32.Kg3 Qg5 33.Kf3 Qf5 34.Kg3 Qg5 35.Kf3=) 29.a4 d4 (29...Qd6 30.Rd1+-) 30.Qc5 d3 31.a5 Qf3 (31...Re8 32.Qb5 Rb8+-) 32.Qf8!! Kf8 33.b8Q Ke7 34.a6 Qh3 35.a7 d2 36.Qe5 Kd7 37.Qd4 Kc7 (37...Ke6 38.a8Q Qf1 39.Kf1 d1Q 40.Qd1 g6 41.Qe4 Kf6 42.Qdd4 Kg5 43.Qg4 Kh6 44.Qh4) 38.a8Q Qg4 (38...Qf1 39.Kf1 d1Q 40.Qd1 Kb6 41.Qd6 Kb5 42.Qaa6) 39.Qg4 d1N (39...g5 40.Qac8 Kb6 41.Qgc4 d1Q 42.Q8c7) 40.Rd1 (40.Rd1 Kb6 41.Qf5 g5 42.Qfa5; 40.Qc4 Kd6 41.Qae4 Nf2 42.Qcc6) 1–0. GuestZYMW – NdocMAKA, freechess.org, 2020.

6.c4 c6 7.Nc3 Bd7 8.a4 a6 9.Nf3 Re8 10.0-0 e4 11.Ne1 d5 12.d4 Bb4 13.Nc2 Ba5 14.c5 Bc3 15.Bc3 ab5 16.ab5 Ra1 17.Qa1 cb5 18.Na3 b4 19.Bb4 Na6 20.Bc3 Qc7 21.Nb5 Bb5 22.Bb5 Ra8 23.Qa5?? Qb8 24.Be2+= Nd7 25.Rb1 Nac5= 26.Qb5 Na4 27.Qd7?? Nc3-+ 28.Rb2 Ne2 29.Kf1 Nc3 30.g3 b5 31.Qc6 Qc8 32.Qc5 Qc5 33.dc5 Rc8 34.Rb5 Nb5 35.c6 Rc6 36.f4 ef3 37.e4 de4 38.h3 e3 39.Kg1 e2 40.Kf2 Nd4 41.Ke1 Rc1 42.Kd2 e1Q 43.Kd3 Rd1 44.Kc4 Qe2 45.Kc5 Qc2 46.Kd6 Qe2 47.g4?? Nf5 48.Kc5 Qc2 (49.Kb4 Rb1 50.Ka5 Qa2#) 0–1. Peter,Falco – Gatterdam,Maximilian, Karl Mala mem op 9th, 2005.

6.Nf3 e4 7.Nd4 =+.

7.a4 ab5 8.ab5 Ra1 9.Ba1 e4 10.Nd4 d5 11.0-0 Bd6 12.Qe1 c5 13.bc6 bc6 14.f3 Re8 15.Qh4 (15...Qe7 16.Nc3=). Taulien,Hans_Juergen – Woschkat,Karl_Heinz, remoteschach.de, 2003.

7.a4 ab5 8.ab5 Ra1 9.Ba1 Bf5 10.0-0 c6 (10...Bb6 11.Nc3=) 11.d4 ed4 12.Nd4 Bg6 13.Nd2 d5 14.N2b3 (14.N2f3 Bd6=) 14...Bd6 15.c4 Qc7 16.h3 (16.Nf3 dc4 17.b6 Qb6 18.Qd6 cb3 19.Bf6 gf6=+) 16...Nbd7 17.bc6 bc6 18.cd5 Nd5 19.Bf3 (19.Nb5 Qb8=) 19...Ne7 20.Qc1 (20.Qe2 Rb8=) 20...Rb8 (20...Ne5 21.Be2=+) 21.Qc3=+ Ne5 22.Nc5 (22.Be2 Nd5 23.Qd2 Bb4=+) 22…Qa7 (23.Ne4 A) 23...Nf3?? 24.Nf3 Qa1 25.Nf6 (25.Qa1?! Be4 26.Rd1 Nd5+-) 25...gf6 26.Ra1+-; B) 23...Nd5=+; 22...Qb6 23.Na4 Qb4 24.Bd1–/+) 0–1. Kossobudzki,Robert – Motyka, corr Poland, 1995.

7.a4 Bd7 8.c4 (8.0-0 Re8=) 8...c6 (8...e4 9.Nd4=+) 9.0-0= ab5 10.ab5 Ra1 11.Ba1 Bg4 (11...cb5 12.cb5 e4 13.Nd4=) 12.d4 ed4 13.Nd4 Be2 14.Qe2 Re8 (14...Qe7 15.Nd2+=) 15.Nd2 (15.Rd1 Qc7=) 15...Qb6 16.N2b3 Nbd7 17.Nc5 (17.Rd1 Ra8+=) 17...dc5 18.bc6 cd4 (18...Nf8!? 19.Nf5 Qc6+=) 19.cd7+/– Nd7 20.Qg4 Ne5 21.Bd4 Ng4 22.Bb6 Ra8 23.Rd1 Kf8 (23...f6 24.e4+/–) 24.Rd8 (24.Bc5 Kg8 25.Bd4 f6+-) 24...Rd8+/– 25.Bd8 Ke8 ½–½. Ulaneo – Canedo, Integracion, 1993.

7.d4 ed4 8.ed4 Bb4 9.c3 Ba5=.

7.d4 ed4 8.ed4 Bb6=.

6.Nc3 a6 7.a4 Bf5 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.0-0 c6 12.d4 ed4 13.Nd4 Bd4 14.Qd4 d5 15.Rc1 Qb6 16.Qb6 Nb6 17.bc6 bc6 18.Na2 Ra8 19.Nb4 c5 20.Na6 Nfd7 21.f3 h5 22.Kf2 Kf8 23.Bc3 f6 24.Bb5 Rc8 25.Ba5 Kf7 26.h4 d4 27.Ke2 g5 28.hg5 fg5 29.c3 de3 30.c4 h4 31.Ke3 Be6 32.Ke2 Kf6 ½–½. Rooijen Van,Peter (1655) – Ponting,Andrew (1880), RB–2009–0-00057, 2009.

6.c4 a6 7.a4 ab5 8.cb5 c6 9.Nc3 Bf5 10.d4 ed4 (10...Bb4 11.de5 Ne4–/+) 11.ed4 (better is 11.Nd4 Bg6 12.Be2=) 11...Bb4–/+ 12.Be2 (12.Bd3 Re8 13.Kf1 Qc8–/+) 12...Re8 (better is 12...Nd5 13.Rc1 Qa5-+) 13.0-0+= Bc3 14.Bc3 Nd5 15.Bb2 (15.Bd2 Nd7=) 15...Nf4 16.Bc4 (16.Re1!?=) 16...d5+= 17.Bb3 Nd7 (better is 17...Qd6+=) 18.Rc1? (better is 18.Qd2!? Re4 19.Rfe1=) 18...Nd3 (18...Ne2!? 19.Kh1 Nc1 20.Bc1-+) 19.Rc2 (19.Rb1 Nb6 20.bc6 bc6+=) 19...Nb2 (better is 19...cb5!? 20.Rd2 Nf4 21.ab5 Bg4–/+) 20.Rb2+= cb5 (20...Qf6 21.bc6 bc6 22.Bc2+=) 21.ab5 (21.Bd5 ba4 (worse is 21...Ra4 22.Rb5 Ra5 23.Qb3+/–) 22.Rb7 Ra5+=) 21...Nf6 22.Ne5 Ne4 23.f3 Nc3 24.Qc1 (24.Qd2 Qa5+=) 24...Nb5 25.Qc5 The isolani on d5 becomes a target 25...Nc7 26.Rc1 (26.g4!? Be6 27.Rc2+=) 26...Rc8–/+ 27.Ba2?? (27.Rd1–/+) 27...Be6 (27...Na6 28.Qc8 Bc8-+ (worse is 28...Qc8 29.Rc8 Bc8 30.Bd5+/–)) 28.Qb4 (28.Qb6 Qg5 29.Rd1 Qe3 30.Kf1 f6–/+) 28...Rb8 (28...Qg5!? 29.Re1 f6–/+) 29.Qb6= Na6 30.Qd8 Red8 31.Rb6 g6 32.Rcb1 Bc8 (32...Rdc8 33.R1b2= (33.Rb7?? Rb7 34.Rb7 Rc1 35.Kf2 Rc2 36.Ke3 Ra2-+)) 33.R1b5 (33.Ra6!? Bf5 34.Rab6 Bb1 35.Bb1+/–) 33...Be6+= 34.Rb7 (34.Rb2 Rbc8+=) 34...Rb7= 35.Rb7 Nb8 (35...Rb8 36.Rb8 Nb8 37.Kf2=) 36.Nd3 (better is 36.Kf2!?+=) 36...Nc6+= 37.Nf4 Nd4 38.Rb6 (38.Rb4 Nf5+=) 38...Kf8 (38...g5 39.Ne6 fe6 40.Kf2+=) 39.Kf2 Ke7 40.Rb7 (40.h4 h6+=) 40...Kf6 (40...Kd6 41.h4–/+) 41.Rb6+= Ke5 42.Nd3 Kf6 43.Ke3 (better is 43.Nf4!?=) 43...Nf5 44.Kf2 d4 (44...Rd6 45.Rb5–/+) 45.Nf4 (45.Be6 fe6 46.Nc5 Nd6+=) 45...Ng7 (45...Rd6 46.Rd6 Nd6 47.Ne6 fe6 48.Ke2–/+) 46.g4 Ke7 47.Rb7 Kf8 48.Be6= fe6?? 49.Rg7!+- Rd6 50.Rh7 d3 51.Ke1 g5 52.Ng2 Rc6 53.Ne3 Rd6 54.Kd2 Rd4 55.Rh5 Rf4 56.Rg5 Rf3 57.h4 e5 58.Re5 Rh3 59.h5 Kg7 60.Kd3 Kh6 61.Ke4 Kh7 62.Nd5 Kh6 63.Kf5 Kg7 64.Nf4 Rf3 65.g5 Rg3 66.h6 Kh7 67.Re7 Kh8 68.Ng6 Kg8 69.h7 1–0. Trivic,Zoran (1700) – Temir,Musa, Lugano SUI, 2014.

6.c4 e4 7.Nd4 (7.d4 Bb4 8.Nfd2 a6=) 7...Ng4 (7...a6 8.d3=+) 8.Be2 (8.Nb3 Bf5=+) 8...Qh4 9.g3 Qg5 (9...Qh3 10.Bf1 Qh5 11.Be2=+) 10.Nb3 (10.f4 ef3 11.Nf3 Qg6=) 10...Bb6 (10...Qf5 11.Bg4 Qg4 12.Nc5 dc5 13.d4 ed3 14.Qd3=+) 11.Nc3 Nf6 12.Qc2 (12.f3!?=) 12...Bf5=+ 13.d3 ed3 (13...Re8 14.d4 Nbd7 15.a4=) 14.Bd3= Bd3 15.Qd3 Nbd7 (15...a6 16.Ne4 Ne4 17.Qe4 ab5 18.h4=) 16.Nd5 Nd5 (16...Rfe8 17.Bf6 Nf6 18.0-0=) 17.cd5 (17.Qd5 Qg4=) 17...Nf6 (17...a6 18.0-0=+) 18.Bf6= Qf6 19.0-0 a6 (19...Rfe8 20.a4=) 20.a4+= ab5 21.a5 Ba7 22.Qb5 Rab8 23.Rab1 Rfc8 24.Rfc1+= Qf5 25.Qc4 c5 26.Nd2 Re8 27.Rb5 Re7 28.Rcb1+/– Kf8 29.a6 b6 30.Kg2 Rbe8 31.e4 Qg6 32.f3 f5+= 33.R5b2 Rf7 34.Re1 fe4 35.Ne4 Qh5 36.Re3 Rfe7 37.Reb3 Rd8 38.Nc3+/– Kg8 39.Ne2 Qf5 40.Nf4+/– Re5 41.Ne6 Re6? 42.de6+- d5 43.Qa4 Qe6+= ½–½. Ranby,Hans – Kaminski,Roman, corr 3GMM½–07, 2000.

6.c4 Re8 7.Qb3 a5 (7...Nbd7 8.Be2=+) 8.Nc3 e4 (8...Bg4 9.h3 Bf5 10.Be2=+) 9.Ng5 (9.d4 Bb4 10.Nd2 Nbd7=) 9...h6–/+ 10.h4? (10.Nh3 Bh3 11.gh3 Nbd7–/+) 10...Bf5 (10...hg5 11.hg5 Ng4 12.Qc2-+) 11.Na4? (11.Nh3 Nbd7–/+) 11...Nbd7 12.d4 ed3-+ 13.Bd3 Bb4 14.Kf1 Bd3 15.Qd3 Ne5?? 16.Qc2? Qe7 17.a3=+ Bc5 18.Nc3 c6 19.Na4 cb5 20.Nc5 dc5 21.cb5 b6 22.a4 Rad8–/+ 23.Ke2 Ng6 24.Nf3–/+ Ne4 25.g3?? Ng3!-+ (26.Ke1 Nh1-+) 0–1. Kuhn,Heinz (1760) – Kupsch,Wolfgang (1765), Amateur Cup B, 2001.

6.c4 Re8 7.d4 ed4 8.Nd4 Ne4 =+.

6.c4 Re8 7.Be2 a6 8.a4 Nbd7 9.Nc3 ab5 10.ab5 Ra1 11.Ba1 e4 12.Ng5 (12.Nd4 d5+=) 12...Bb4 (12...h6 13.Nh3–/+) 13.Qb1 Will e4 fall? (13.0-0 Bc3 14.Bc3 d5=) 13...Bc3+= 14.Bc3 (14.dc3? Nc5 15.b6 cb6-+) 14...h6 15.Nh3 Nc5 (15...Ne5 16.Nf4=) 16.Nf4= Bf5 (16...Ng4 17.0-0=) 17.Qa1+= Ncd7 18.h4 (18.0-0 c5+=) 18...Ne5= 19.f3 (19.Qa7 b6=) 19...Qa8 (19...c6 20.c5=) 20.Kf2 Bd7 (20...Qb8 21.Nd5 Nd5 22.cd5+=) 21.Qb2 (21.Qa8 Ra8 22.c5 b6 23.cd6 cd6+=) 21...c6 22.b6 Qb8 (22...Bf5 23.Ra1 Qd8 24.Kg1=) 23.Qa2 (23.d4 Ng6 24.Ng6 fg6+=) 23...Be6 (23...Bf5 24.Qa7 Qc8 25.Qa1=) 24.Ne6 Re6 25.Qa7 Qc8 26.Ra1 Ned7 (26...ef3!? 27.gf3 Re8=) 27.f4 Re8 28.g4 Nh7 29.g5 hg5 30.hg5 Nc5 31.Rh1 Qf5 (31...Qe6 32.Kg3 f6 33.Bg4+/–) 32.Qa1 (32.Kg3 Qe6 33.Qa1+-) 32...Ne6?? (better is 32...f6 33.Rg1 fg5 34.Bg7 Nb3+/–) 33.Kg3+- Qc5 34.Qb1 (better is 34.Qa7!? Nhg5 35.Bg4 d5 36.Qb7 d4 37.Bd4 Nd4+-) 34...d5 35.cd5 cd5 36.Rh5 d4? (36...Qd6 37.Qb5 Rd8 38.Bb4+-) 37.Qe4 (37.g6 Nhg5 38.gf7 Kf7+-) 37...Nhg5? (better is 37...dc3 38.Qh7 Kf8+-) 38.fg5 Qd6 39.Kg4 dc3?? 40.Bd3?? g6-+ 41.Rh6 Qd7 42.Qh1 Kf8 43.Rh8? Ke7-+ 44.Re8 Ke8 45.Qh8 Nf8 46.Kf3 Qd3 47.Qe5 Ne6 48.Qb8 Qd8 49.Qb7 cd2 50.Qc6 Kf8 0–1. Leon Manas,JF (1710) – Rodriguez Ferraz,Borja (2075), Championship de Canarias por equ, 2010.

6.Be2 c6 7.0-0 cb5 8.d4 ed4 9.ed4 Bb6 10.Bb5 Nc6 11.Nbd2 a6 12.Be2 Bf5 13.a3 (13.Bd3 Bd3 14.cd3 Re8=) 13...d5 14.c4 Re8 15.c5 Bc7 16.Re1 Qd7 17.Qb3 Na5 18.Qb4 Nc6 19.Qb3 (19.Qb7?? Bh2 20.Nh2 Qb7-+) 19...Na5 20.Qc3 (20.Qb4 Ne4=) 20...Nc6 (20...Qa4 21.Nh4 Bc2 22.Nhf3=) 21.Bd3 (21.Qb3 Re7=+) 21...Ba5=+ 22.Qc2 Ne4 (better 22...Bd3 23.Qd3 Nh5=+) 23.Ne4+- (worse 23.Be4 A) worse 23...Be4 24.Ne4 (worse 24.Re4 de4 25.Ne4 Qf5-+) 24...Qf5 25.Nfd2+=; B) 23...de4 24.Nh4 Be6 (24...Nd4?! 25.Bd4 Qd4 26.Nb3=) 25.Re4 f5=+) 23...Be4 24.Re4 Re4 25.Be4 de4 26.Qe4 Re8 27.Qd3 Ne5 (27...Qd5 28.Rd1+-) 28.Ne5+- Re5 29.Qg3 (29.Rd1!? Rd5 30.Bc3 Bc3 31.Qc3+-) 29...Re2+- 30.Bc3 Bc3 31.Qc3 Qd5 (31...Qf5 32.Qf3 Qf3 33.gf3+=) 32.h3 (32.Re1 Re6+-) 32...g6 (32...Qf5 33.Qf3 Qf3 34.gf3+=) 33.Kf1 Re4 34.Rd1 h5 35.f3 Re7 36.Kf2 f6 37.Rb1 (37.Rd3 Kg7+-) 37...Rc7 (37...Rd7 38.Rb4+-) 38.Rb6+- Qf5?? (better 38...Kf7+-) 39.Qb3 Kg7 (39...Kf8 40.Rb7 Rb7 41.Qb7+-) 40.Rb7 Rb7 (40...Qf4 41.Rc7 Qc7 42.Qe6+-) 41.Qb7 Kh6 (41...Kf8 42.c6 Qd3 43.Qb8 Kf7 44.Qc7 Kf8 45.Qd6 Kg7 46.c7 Qc2 47.Kg1 Qb1 48.Kh2+-) 42.Qe4 Qg5 (42...Qd7 43.c6 Qf7+-) 43.Qe3 1–0. UncleBulgaria (2375) – profbill (2110), ChessWorld.net, 2016.

6.Be2 c6 7.a4 Bf5 8.c4 Nbd7 9.Nh4 Be6 10.Qc2 d5 11.cd5 Nd5 12.Nf3 f6 13.Bd3 g6 14.Bc3 Bd6 15.h4 Nc5 16.Bc4 Bf5 17.d3 e4 18.de4 Be4 19.Qd2 Kg7 20.h5 Nc3 21.Nc3 (21.Qc3? Bf3 22.gf3 cb5 23.Bb5 Rc8–/+) 21...Bf3 22.gf3 Be5 23.Qc2 f5 (better is 23...Qa5 24.Ra3 Qb4 25.hg6 h6-+ (25...Qc4?! 26.Rh7 Kg8 27.bc6-+)) 24.f4+= Bc7 25.Ke2 Re8 26.Kf3 Qe7 27.Rag1 Ne4 28.bc6 bc6 29.Bd3 Nc3 30.Qc3 (better is 30.hg6!? Qc5 31.Rh7 Kg8 32.Rc7+-) 30...Qf6+/– 31.h6 Kf7 32.Bc4 Ke7 33.Qb4 Qd6 34.Qc3 Qf6 35.Qc2 Rad8 36.Ba6 Qe6 37.Qc5 Qd6 38.Qc3 Qf6 39.Qc2 Bb6 40.Rc1 Rd6 41.Qb3 Qe6 42.Qb4 Kd7 43.a5 Qd5 44.Kg3 Qa5 45.Qc4 Qd5 46.Qc3 Re7 47.Qh8 Bd8 48.Rb1 Ke6 49.Bc8 Kf7 50.Qh7 Kf8+= 51.Qh8 Qg8 52.Qa1 Bb6 53.Rbd1 Rd5 54.Qf6 Qf7? 55.Qf7 Kf7 56.Rd5 (56.Rd5 cd5 57.h7+-) 1–0. Leon Manas,JF (1970) – Montesdeoca Arteta,JA, Las Palmas ESP, Canaria Team Ch–B, 2012.

6.Be2 e4 7.Nd4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 (10...d5 11.0-0=) 11.0-0 d5 12.Nc3 Nb6 13.Nb3 Bd6 14.f4 ef3 (14...Bf5 15.g4 Bd7 16.g5+=) 15.Bf3 c5 16.bc6 bc6 17.Ne2 Nbd7 (17...Ng4 18.Nf4 Qh4 19.h3=) 18.Nf4= Qc7 19.Qe1 (19.Bg4 Ng4 20.Qg4 f6=) 19...Re8 20.Qh4 Ba6 21.Rc1 (21.Be2 Be2 22.Ne2 c5+=) 21...Ne5 22.Be5 Be5 23.Nc5 Bc4 24.Nfd3 Bd6 25.Ra1 Qe7 26.Qd4 Bd3 27.Nd3 c5 28.Qb2 c4 29.Nf2 d4! 30.e4 Qe5 31.g3 h5 32.c3 Bc5 33.Ra5 dc3-+ 34.Qc3 Bf2 35.Kf2 Ne4 36.Be4 Qe4 37.Qe3 Qc6 38.Rc5 Qf6 39.Qf4 Qa1 40.Rd5 Qe1 41.Kg2 Re2 42.Kh3 Rf2 (42...Rf2 43.Qc4 Qe6 44.g4 hg4 45.Kg3 Rd2 46.Rd8 Rd8 47.Qe6 fe6-+) 0–1. Marr33 (2220) – Demchik (2600), Rated game, 3m + 0s, 2010.

6.Be2 e4 7.Nd4 a6 8.ba6 Na6 (worse is 8...Ra6 9.Ba6 Na6 10.Nc3+=) 9.0-0 d5 10.Nc3 c6 11.f4 (11.d3!?+=) 11...Bd4–/+ 12.ed4 Qb6 13.Na4 Qa5 14.Ba6 Qa6 (14...Ra6?! 15.Nc5 Ra7 16.a4+=; 14...ba6?! 15.Nc5=; worse is 14...Qa4 15.Be2+=) 15.Nc5 Qa7 (15...Qc4 16.f5–/+) 16.a4+= b6 17.Nb3 White plans a5 17...Qc7 (17...Ba6 18.d3+=) 18.Bc3 White intends a5 18...Ba6 19.d3 Rfe8 20.a5 ba5 21.Ra5 Bb5 22.Ra8 Ra8 23.Nc5 Re8 24.Qd2 Nd7 25.Re1 f5 26.Bb4 Nc5 27.Bc5 Ra8 28.c4 Ba6 29.de4 fe4 30.Ra1 Qc8 31.cd5 cd5 32.h3 Bc4 33.Ra8 Qa8 34.f5 ½–½. marekt (2130) – zunsurfer (2075), gameknot.com, 2014.

6.Be2 e4 7.Nd4 c6 8.a4=.

6.Be2 e4 7.Nd4 d5 8.0-0= Nbd7 9.f4 ef3 (9...Nb6 10.Nb3 Be7 11.Bd4=) 10.Nf3 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qe7 14.c4 (14.Nd4 Ne5=) 14...dc4 15.Bc4 Nb6 16.Bb3 Bd7 17.Nc3 Ra8 18.Qc2 Be6 19.Be6 Qe6 20.Ne2 Ne4 21.Nfd4 Ra2 22.Bb2 (22.Ne6 Rc2 23.Nc5 Nc5=) 22...Bd4 23.Nd4 Qe5 24.Ra1 Ra1 25.Ba1 Nd5 26.Bb2 Nd6 27.Ba3 g6 (27...Ne4 28.Bc1=) 28.Qa2 Kg7 29.Bb2 f6 ½–½. Kural,A. Serhat (2000) – Kloeg,Julien, Champions League, 2007.

6.Be2 Bf5 ½–½. Neuwald, Volker – Loesch, Torsten, Leimen, 2001.

6.Be2 Bg4 7.d4 ed4 8.Nd4 Bd4 9.Bd4 Be2 10.Qe2 Nbd7 11.Qf3 b6 12.0-0 Qe7 13.Nc3 Nc5 14.Bf6+- Qf6 15.Qf6 gf6 16.Nd5 Kg7 17.Nc7 Ne4? 18.Na8+- Ra8 19.Rfd1 Rc8 20.f3 Nc3 21.Rd6 Nb5 22.Rd2 (22…Na3 23.Kf2+-) 1–0. Trkn – guest468, ICC, 2004.

7.ed4 Bb4 8.c3 Re8 9.Be2 Ba5=.

7.Nd4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Ng4 11.Nd2 Qh4 12.g3 Qh6 13.Qf3 Re8 (13...Nh2? 14.Qg2 Nf1 15.Rh6 Nd2 16.Rh4+- (16.Kd2?! gh6 17.Bc3 Re8+-)) 14.Qf4 g5 15.Qf3 Ne5 (15...Nh2? 16.Qg2 Qf6 17.N4b3+- (17.Qh2?! Bd4 18.Qh7 Kf8+-; 17.Rh2?! Bd4 18.Ne4 Qg6 19.Bd4 Qe4 20.Qe4 Re4+-)) 16.Qe4 g4 17.Qf4 Qg6 18.Bg2 Bd4 19.Bd4 Bf5 20.h3 Bc2 21.0-0 (21.Be5!? Re5 22.b6 (< 22.hg4 Rb5 23.Ne4 Nd7=+) 22...cb6 23.Qg4 Qg4 24.hg4=) 21...gh3=+ 22.Bb7 Nbd7 23.Qh4 Rb8 24.Bh1 Rb5 (24...h2 25.Kh2 Nf6 26.Be5 de5 27.Bc6=) 25.Ra1 (25.Qd8!? Nf8 26.Qc7=) 25...c5=+ 26.Ra8 Kg7 27.Bc3 Nf6 28.f4 Rb4 (28...h2 29.Kh2 Neg4 30.Kg1+=) 29.e4 (29.Bb4 Neg4 30.Bc5 h2 31.Kf1 dc5=) 29...Neg4 (29...h2 30.Kh2 (30.Qh2 Neg4 31.Qh4 h5+/–) 30...Be4 31.fe5 Ng4 32.Kg1 Ba8 33.ed6 f6 34.Ba8=) 30.Qh3 (better is 30.f5 h2 31.Kf1 Ne3 32.Ke2 Nf5 33.ef5 Rh4 34.fg6=) 30...Ra4?? (30...Rb6 31.Bf3 Ne3 32.Ra3+-) 31.Ra4 Ba4 32.Qh4 Kf8 33.Bf3 h5 34.Bg4 Ng4 35.f5 Qh6 36.Qd8 Be8 37.Nf1 d5 38.f6 d4 39.Qe7 Kg8 40.Qe8 Qf8 41.Qf8 Kf8 42.Ba5 Nf6 43.Nd2 Ke7 44.Kf2 Ng4 45.Ke2 Ne3? 46.Bb6+- Kd6 47.Nb3 Ng4 48.Nc5 f5? 49.ef5 Ke5 50.Ne6 d3 51.Kd3 Kf5 52.Nd4 Kg6 53.Nf3 Nf6 54.Nh4 Kh6 55.Bd8 Ng4 56.Ke4 Kg7 57.Nf3 Kh6 58.Ne5 Nf2 59.Kf3 Nh3 60.Kg2 Ng5 61.Bg5 Kg5 62.Kh3 Kf5 63.Nc6 Kg5 64.Nb4 Kg6 65.Kh4 Kh6 66.Nd5 Kg6 67.Nf4 Kh6 68.Nh5 Kg6 69.g4 Kh6 70.g5 Kg6 71.Kg4 Kh7 72.Kf5 Kh8 73.g6 Kg8 74.g7 Kh7 75.Kg5 Kg8 76.Kf6 (76...Kh7 77.Kf7+-) 1–0. Taulien,Hans_Juergen (2225) – Thoma,Theo (1820), remoteschach.de, 2004.

7.Nd4 Bb4 8.Nd2 Ne4 9.c3 Nd2 (worse is 9...Nc3 10.Qb3 Na2 11.Ra2 Bd2 12.Kd2+/–) 10.Qd2 Ba5 11.Be2 Nd7 12.0-0 1–0. Tiedemann,Joern (2060) – Schuetzbach,Gerd (1975), RSS7E basic–47, 2011.

7.Nd4 d5 8.c4=.

7.Nd4 Nbd7 8.a4 Qe8 9.Nd2 Bb4 10.Bd3 Ne5 11.0-0 Bg4 12.f3 (12.Be2 Be2 13.Qe2 Bd2 14.Qd2 Nc4=) 12...Bd7 (12...Nd3 13.cd3 Nd5=) 13.Qe2= c5 14.bc6 bc6 15.c4 Rb8 16.Ba3 Ba3 17.Ra3 Qe7 18.f4 Neg4 19.h3 Nh6 20.e4 Rfe8 21.Re1 a6 22.Qf2 Rb2 23.Rb3 Ra2 24.e5 de5 25.fe5 c5 26.N4f3 Nh5 27.Qe3 Ng3 (< 27...Ra4 28.g4+/–) 28.Bb1 (better is 28.Rb7!? Ra4 29.Ne4 Ne4 30.Qe4=) 28...Nhf5=+ 29.Qf4 Ra4 30.Nf1 Nh5 31.Qg5 (31.Qd2 Rc4 32.e6 Be6 33.Bf5+/–) 31...Qg5–/+ 32.Ng5 h6 33.Nf7 Nd4 (33...Kf7 34.Rb7) 34.Rb7 Bc6 35.Rc7 Nf4 (35...Rc4? 36.Nd6 Rb4 37.Ba2 Kh7 38.Rc6 Nc6 39.Ne8+-) 36.Nd6 Rf8 37.e6 Nfe6 38.Re6 Ne6 39.Rc6 Nd4 (40.Rc8 Rc8 41.Nc8 Kf7= (41...Rc4?? 42.Ba2+-)). Steingraeber,Barbara – Leistner,Axel_Eberhard, RSM2003 remoteschach.de, 2003.

7.Nd4 Qe7=.

7.Nd4 Re8 8.Be2 (8.Nb3 Bb6=) 8...Bd7 (8...a6 9.Nb3 Bb6 10.a4=) 9.0-0 a6 10.c4 ab5 11.cb5 c6 12.a4 Nd5 (12...Bb4 13.Nd2=) 13.Nc3 Nc7 14.Nb3 cb5 (14...Bb4 15.Na2 Ra4 16.Nd4 cb5 17.Nb4 Rb4 18.Ba3=) 15.Nb5 (15.Nc5 dc5 16.ab5 Ra1 17.Qa1 Bc8+/–) 15...Bb5 (15...Nb5!? 16.ab5 Ra1 17.Qa1 Qg5+/–) 16.ab5+/– Ra1 17.Ba1 Ne6 (17...Nd7 18.Bf3 Nb5 19.Bb7+/–) 18.Qc2 b6 (18...Nd7 19.Rd1+/–) 19.Bd3 Qh4 20.Qc3 (20.Bf5 Qh6+/–) 20...Nd7 21.Rd1 (21.Bf5 Nf6+/–) 21...Nf6 (21...Ne5 22.Bf5+/–) 22.Bc4 (22.Qc2 Ng4 23.h3 Ne5+/–) 22...Ne4 (22...Rc8 A) < 23.Nc5 Rc5 24.g3 Qg4-+ (24...Qc4?! 25.Qc4 Rc4 26.Bf6=+); B) 23.Bd5=) 23.Qb2 (23.Qe1 Nf2 24.Nc5 Qc4 (24...Nc5? 25.Bd5+-) 25.Ne6 Nd1 26.Ng7 Re3 27.Qd1 Qc5=+) 23...Qg4 (23...Ba3! 24.g3 Bb2 25.gh4 Ba1 26.Ra1 Rd8=) 24.Re1 Nf6 25.Nc5 (25.Qe2 Qh4+=) 25...dc5 (25...Qc4 26.Rc1 Qd5 27.Ne6 fe6 28.Qe2=). Wiens,Paul – Angermann,Thomas, RH–ch U20 Gau Algesheim, 1994.

7.Nd4 Bg4 8.Be2 Be2 9.Qe2 a6 10.a4 Nbd7 11.0-0 ab5 12.ab5 Ra1 13.Ba1 Qe7 14.Nd2 Ra8 15.N4b3 d5 16.c4 Bd6 17.cd5 Be5 18.Be5 Qe5 19.Rc1 Nd5 20.Qc4 h6 21.Nf3 Qe6 22.h3 N7b6 23.Qc2 Qe8 24.Nfd4 Qe7 25.e4 Nf4 26.Kh2 Nd7? 27.g3 Ne6 28.Ne6 Qe6 29.Qc7 Qb3 30.Qd7 Qf3 31.Qf5 Qf5 32.ef5 Ra5 33.Rc8 Kh7 34.Rc5 b6 35.Rd5 Kg8 36.h4 Kf8 37.g4 Ke7 38.Kg3 Ra3 39.f3 f6 40.g5 hg5 41.hg5 fg5 42.Kg4 Rb3 43.Re5 Kf7 44.Kg5+/– Rb1 45.Rd5 Rg1 46.Kf4 Rb1 47.Ke5 Ke7 48.Ke4 Rb4 49.Ke3 Rb3 50.Kf4 Rb1 51.Re5 ½–½. Taulien,Hans_Juergen (2225) – Meincke,August_Wilhelm (2235), remoteschach.de, 2005.

7.Nd4 Ng4 8.Nd2 Re8 9.N2f3 a6=.

7.Nd4 Ng4 8.h3 Ne5 9.Be2=.

7.Nd4 Ng4 8.h3 Qh4 9.g3= Qh6 10.Nc3 (10.Bg2 Ne5 11.Qe2 Re8=) 10...c6 11.Bg2 Ne5 12.Rb1 (12.Ne4 Bb6=) 12...d5 (12...Rd8 13.Qe2 d5 14.Na4 Bb4 15.Kf1=) 13.Nb3 Bb4 14.a3 Bd6 15.bc6 (15.Nd4 Bc5=) 15...bc6 16.Nd5 Nc4 Attacks the isolani on a3 (16...cd5 17.Be5 Be5 18.Qd5 Bc3 19.Kd1-+) 17.Nb4 (17.Nf4 Nb2 18.Rb2 Ba3+=) 17...a5 (17...Nb2 18.Rb2 Rd8 19.c3=) 18.Nd3 (18.Nc6? Nc6 19.Bc6 Bb4 20.ab4 Qc6-+) 18...Nb2 (18...Rd8 19.Qc1+=) 19.Rb2 (19.Nb2 Ba3 20.Qd3 a4+=) 19...a4 20.Nbc5 Qg5 21.Ne4 Qa5 22.Qd2 Qd2 23.Kd2 Ba3 24.Ra2 Be7 25.Nec5 The isolani on a4 becomes a target 25...a3 26.Rha1 Ra5 27.Rb1 Na6 28.Nb3 Rb5 29.Raa1 c5 30.c4 Rb6 31.Ra3 Rd8 32.Ke2 Be6 33.Rc1 g5 34.g4 f5 35.gf5 Bf5 36.Nd2 Nb4 37.Nb4 Rb4 38.Bd5+/– Kf8 39.e4 Bg6 40.Nf3 Bh5 41.Kf1 Rb6 42.Re1 h6 43.Kg2 Be8 44.Ree3 Bd6 45.e5 Bc7 46.Ra7+- (46.Ra7 Rd7 47.Nd2+-) 1–0. Taulien,Hans_Juergen (2350) – Zittel,Max (2230), remoteschach.de, 2002.

7.a4 c6 8.d4 ed4 9.ed4 (< 9.Bd4 Bd4 10.Qd4 Qa5 11.Nbd2 ab5–/+; 9.Nd4?! Be6=) 9...Bb4 10.c3 Ba5 11.0-0 Bc7 (11...Re8 12.Re1=) 12.Qc2 (12.bc6 bc6 13.c4 Re8=) 12...ab5 13.ab5 Ra1 14.Ba1 Re8 (14...d5 15.c4=) 15.Bd3 (15.c4 d5=) 15...Bg4 (15...d5 16.Nbd2=) 16.Nbd2 d5 17.Ne5 (17.Rb1 Bf4=) 17...Be5=+ 18.de5 Re5 19.Nb3 (19.c4 Rh5=) 19...cb5 (19...Re8 20.c4 dc4 21.Bc4=+) 20.c4= Rh5 (20...bc4 21.Be5) 21.cb5 Nbd7 22.f3 (22.Re1 Qb8 23.h3 Be6=) 22...Be6=+ 23.Nd4 Qb6 (23...Qf8 24.Rc1=) 24.Qc8 (24.Rc1 Ne8=) 24...Nf8=+ 25.Qc3 Bd7 26.Kh1 (26.Bb2 Ne6 27.Ra1 Rh4 28.Ra8 Ne8=+) 26...Re5 (26...Qd6 27.f4=+) 27.Re1 (27.Nc2 A) < 27...Bb5 28.Qb3 (28.Qe5 Bd3 29.Bd4 Qe6=+) 28...d4 29.Rb1+/–; B) 27...Rg5=+) 27...Re1 28.Qe1 Ne6 (28...Ng6 29.Bg6 hg6 30.Qb4–/+) 29.Nf5 (29.Ne6 Qe6 30.Qe6 Be6 31.Bf6 gf6=+) 29...Nf4 (< 29...Bb5 30.Qb1 Ne8 31.Qb5 Qb5 32.Bb5+/–) 30.Ne7 (30.Bd4!? Qd8 31.Bb1=+) 30...Kh8–/+ 31.Bb1 (31.Bf6 Qf6 (31...gf6 32.Qg3 Ng6 33.Qb8 Kg7 34.Qg8 Kh6 35.Bg6 fg6 36.Qf8 Kh5 37.Nd5+-; 31...Nd3?! 32.Qa1 Nf2 33.Kg1 Nh3 34.Kh1 Qg1 35.Qg1 Ng1 36.Kg1 gf6 37.b6=+) 32.Bf1 b6–/+) 31...Bb5 (better is 31...Qb5 32.Be5 Nd3 33.Bd3 Qd3 34.Bf6 gf6–/+) 32.g3?? (better is 32.Bf6 Qf6 33.Qb4–/+) 32...Be2-+ 33.h4 Bf3 (34.Kh2 Ng4) 0–1. De Cat,Ben – Kuehn,M (2230), Aalborg op, 1987.

7.a4 c6 8.d4 ed4 9.Nd4 Bb4 10.c3 Ba5 11.0-0 Bc7 12.Qc2 d5 13.c4 Qd6 14.Nf3 Nbd7 15.Nbd2 Re8 16.Rfc1 ab5 17.ab5 Ra1 18.Ba1 c5 19.cd5 b6 20.Bc4 Bb7 21.e4 Ng4 22.Re1 Qf4 23.g3 Qh6 24.Be2 Nde5 25.Nh4 Bc8 26.Nf1 Nf6 27.f4 Ng6 28.Ng6 Qg6 29.Bd3 Qh6 30.Qa2 1–0. Taulien,Hans_Juergen – Schild,Reinhard, remoteschach.de, 2003.

7.a4 Bd7 8.0-0 c6 (8...Bb4 9.Bc3 Bc3 10.Nc3=) 9.c4 (9.d4 ed4 10.Nd4 Re8=) 9...Bb6 (9...e4 10.Nd4=) 10.d4 (10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Re8=) 10...e4 11.Nfd2 ab5 12.Ba3 (better is 12.ab5!? Ra1 13.Ba1 cb5 14.cb5=) 12...Ra4–/+ 13.Qb3 Be6 (13...Ba5 14.Nc3 Bc3 15.Qc3–/+) 14.Nc3 Ra7 15.d5 cd5 (15...Bf5 16.cb5 Bc5 17.Bc5 Ra1 18.Ra1 dc5 19.Qc4=+) 16.cd5= Bf5 (better is 16...Nd5!? 17.Nd5 Qg5 18.Qb5 Qd5 19.Qb6 Ra3 20.Ra3 Qd2+=) 17.Nb5+/– Ra5 (17...Ra3 18.Na3 Nbd7 19.Nac4+/–) 18.Nc4 (18.Nd6 Rd5 19.N2c4 Bc7 20.Nf5 Rf5 21.Bf8 b5+-) 18...Ra3+/– 19.Nca3 (19.Nba3 Nbd7+/–) 19...Ng4 (19...Nbd7 20.Nc4 Nc5 21.Qb2+/–) 20.Nd4 (20.Bg4 Bg4 21.Nc3 Bf5+-) 20...Bd4+/– 21.ed4 Nd7 22.Bg4 Bg4+/– 23.Qg3 Nf6 24.Rfe1 Bf5 25.Nc4 Nd5 26.Qd6 h6 27.Ra5 Be6+/– 28.Re4 Nc3+= 29.Re3 Bc4= 30.Qd8 Rd8 31.Rc3 Rd4 32.h3 b5 33.Ra8 Kh7 34.Rb8 g6 35.Kh2 Kg7 36.Kg3 Rd2 37.h4 h5 38.Re3 Rd4 39.f3 Rd2= 40.Re1 Kf6 41.Rb6 Kg7 42.Kh3 Kh7 43.Rb7 Rd4 44.Re3 Kg7= 45.g4 hg4 46.fg4 b4 47.Kg3 Ba2 48.Ree7 Kf8+= 49.h5 gh5 50.gh5+/– Kg8 51.Red7 Re4 52.Re7 Be6 53.Kf3+/– Rd4?? 54.Re8+- Kg7 55.Re6 b3 56.Ree7 (56...Kh6 57.Rb6 Kg7 58.Rb3+-; 56.Rg6 Kh8 57.Rf6 Rd1+-) 1–0. Osovsky,Boris – Pous Bargues,Jose Manuel, Alzira–chT, 2003.

7.a4 e4 8.Nd4=.

7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.0-0 Re8 11.a4 Nd5=.

7.d4 ed4 8.ed4 Bb6 9.0-0 ab5 10.Bb5 Bg4 (10...Be6 11.Re1= Ra2=+) 11.Re1 Nc6 12.c3 Nd5 (12...Re8 13.Re8 Qe8 14.Nbd2=) 13.Nbd2 Nf4 14.h3 (14.Bc1 Re8=) 14...Bh5 15.Ne4 Re8 16.Bc1 d5 17.Neg5 Re1 (17...Qf6 18.Bf4 Qf4 19.Re8 Re8 20.c4=) 18.Qe1 Qf6 19.Qe3 Ng2 20.Kg2 h6 21.Bc6 bc6 22.h4 (22.Nf7 Bf7 23.Qe5 Qg6 24.Qg3 c5=) 22...hg5=+ 23.hg5 Qf5 24.Ne5 c5 25.dc5 Bc5 26.Qc5 Qe4 (26...Qe5 27.Qe3 Qd6 28.a4=+) 27.Kg3 (27.Kg1 Qe1 28.Kg2 Qe5=+) 27...Qe5 28.Bf4 Qf5 (28...Qe2 29.Qe3 (29.Qc7?? Qf3 30.Kh2 Qf2 31.Kh3 Bg6-+) 29...Qg4 30.Kh2=+) 29.Qe3 (29.Qc7 Qg4 30.Kh2 Bg6=+) 29...f6 (29...c6 30.a4=+) 30.Bc7= Re8 31.Qf4 Qd3 32.Kh2 Re4 33.Qg3 Qc4 (33...Qc4 34.f4 Qc7 35.gf6 Re2 36.Kh1 d4 37.cd4 Qc6 38.Kg1 Qf6-+) 0–1. Haznedaroglu,Kivanc (1990) – Krueger,Jan, corr ICCF WSTT/3/06/2, 2006.

6.a4 0-0 7.Be2 =+.

6.a4 ab5 7.ab5 (7.d4 ed4 8.ed4 Qe7 9.Be2 Bb6 10.ab5 Ra1 11.Ba1 0-0=) 7...Ra1=+ 8.Ba1 Bg4 (8...e4 9.d4 Bb4 10.Nfd2=) 9.Be2 (9.d4 ed4 10.ed4 Bb4 11.c3 Qe7 12.Qe2 Ba5=) 9...e4 (9...0-0 10.d4 ed4 11.Nd4 Be2 12.Qe2=) 10.Nh4 (10.Nd4 Be2 11.Ne2 d5=) 10...Be6=+ 11.0-0 (11.f3 d5=) 11...Nd5 (11...g5 12.f3 gh4 13.fe4 Nbd7=) 12.g3= (12.Bg7? Rg8 13.d4 ed3 14.Qd3 Qh4-+) 12...0-0 13.Bg4 (13.d4 Bb4=+) 13...f5 14.Bh3 (14.Be2–/+) 14...Qd7 (14...g5 15.d4 Bb6 16.Nf5 Bf5 17.Bf5 Rf5 18.Qg4-+) 15.c4? (15.d4 ed3 16.Qd3 Nb4=+) 15...Ne7 (15...Nb6 16.Bc3 g5-+ (16...Bc4?! 17.d4 ed3 18.e4–/+)) 16.Qb3 g5 17.Qc3+/– Kf7 18.Qg7 Ke8= 19.Qg5 Rg8 20.Qh5+/– Kd8 21.Qh7 c6 22.Bf6 Re8? 23.Bf5 Bf5 24.Nf5 cb5 25.cb5 d5 26.g4 Qb5 27.Qf7 Nd7 28.Qd5 Qc6 29.Qc6 bc6 30.Be7 Be7 31.Ne7 Re7 32.Nc3 Ne5 33.Ne4 Nf3 34.Kg2 Nh4 35.Kg3 (35...Re4 36.Kh4+-) 1–0. tschulz – 1805DYDIDIDY, grosses Mannschaftsturnier, 2005.

6.c4 0-0 7.a4 (7.d4 ed4 8.Nd4 Bg4=+) 7...Bg4 8.Be2 (8.h3 Bh5=+) 8...Nbd7 (8...e4 9.Nd4 Be2 10.Qe2=+) 9.0-0 Bf3 (9...e4 10.Ng5 Be2 11.Qe2=+) 10.Bf3= e4 11.Be2 Qe7 (11...Ne5 12.f3 ef3 13.gf3=) 12.Nc3 Ne5 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.Qc2+= Ng6 14.Rfd1 (14.d3 ed3 15.Bd3 ab5 16.ab5 Rfe8+=) 14...Rfe8 (14...ab5 15.ab5 Rfe8 16.d3+=) 15.d3 ed3 16.Rd3 (16.Bd3 ab5 17.ab5 Ra1 18.Ra1 Qe6+/–) 16...Ne5 (16...c6 17.a5+=) 17.Nd5 (17.Rdd1 Neg4 18.Nd5 Nd5 19.Bg4 Nf6+=) 17...Nd5= 18.Rd5 c6 (18...Qh4 19.Be5 Re5 20.Re5 de5 21.Bf3+=) 19.Rdd1+= Rad8 (19...Rac8 20.Qf5+=) 20.Qc3 f6 (20...Qh4 21.a5+=) 21.Ra2 Qe6= 22.Raa1 Qe7+= 23.Bh5 Nf7 24.g3 Qe6 25.Ba3 Ba3= 26.Ra3 g6 27.Be2 Qe5 28.Qc2 Qc5 29.Rc3 Qe5 30.c5 ab5 31.ab5 d5 32.bc6 bc6= 33.Rb3 Qc7 34.Qb2 Qe5 35.Rb1 d4 36.Qc2 de3 37.Re3 Qc7 38.Re8 Re8 39.Bf3 Re5 40.Rb6 Nd8 41.Ra6 Qd7 42.Kg2+/– Qc8 43.Qa2 Kf8 44.Ra7 Re7+/– 45.Re7 Ke7 46.Qg8 Qf5 47.Qh7 Nf7 48.Bc6 Qc5 49.Be4 f5 50.Bf3 Kf6 51.h4 Ne5 52.Qb7 Nf3 53.Qf3 Kg7 54.Kh3 Qc1 55.Kg2 Qc4 56.h5 Kh6 57.hg6 Kg6 58.Qe3 Qd5 59.f3 Qa2 60.Kh3 Qb1 61.Qe8 Kf6+/– 62.Qc6 Ke5 63.f4 Kd4+/– 64.Kh4 Ke3 65.Qc3 Kf2 66.g4 fg4 67.Qg3 Ke2 68.Qg4 Kd2 69.f5 Qh1 70.Qh3 Qe1 71.Kg5 Qe5 72.Qh6 (72...Kd1 73.Qf6 Qg3 74.Kh6+-) 1–0. Daehne,Armin – Bliss,Helmut, BdF, 1986.

6.c4 e4 7.Nd4 =+.

6.d4 ed4 7.ed4 Bb6=.

6.Nc3 0-0=.

6.d4 ed4 7.ed4 Bb6=.

6.Be2 Nbd7 7.0-0 0-0 8.c4 a6 9.a4 a5 (better 9...e4!? 10.Nd4 Be2 11.Qe2 Ne5=+) 10.h3= Bh5 11.Nc3 c6 (11...Bb4 12.d4=) 12.g4 (12.d4 Bb4+=) 12...Bg6= 13.Nh4 Ne8 (13...Bb4!?=) 14.Ng6+- fg6 15.d4 Bb6 16.Ne4 Qh4 (better 16...ed4!? 17.ed4 Qe7+-) 17.c5!+- dc5?! (17...Bc7 18.b6 Bd8 19.cd6 ed4 20.Qb3 Kh8 21.ed4 Bb6 22.Bc4+-) 18.de5 Qh3 (18...Rd8 19.Qb3 Kh8 20.bc6 bc6+-) 19.Qd7 Rb8 (19...Qh4 20.Qb7 Qd8 21.Qc6+-) 20.bc6 bc6 (20...Qh4 21.cb7 Qd8 22.Rad1+-) 21.Ng5 Qh4 22.Qe6 Kh8 23.Qe7 Nf6 24.ef6 gf6 (24...Qh2 25.Kh2 Bc7 26.Qc7 Rb7 27.Qb7 Rf6 28.Bf6 gf6 29.Qh7) 25.Bf6 Rf6 26.Qf6 Kg8 27.Bc4 1–0. Ddgs – Kasheli, internet, 2019.

6.Be2 Nbd7 7.0-0 0-0 8.d4 ed4 9.ed4 Bb6 10.Nbd2 d5 11.c4 c6 12.a4 Bc7 13.c5 Re8 14.h3 Bh5 15.Re1 Ne4 16.Ne4 de4 17.Nd2 Bg6 18.Bh5 Qg5 19.Bg6 Qg6 (worse is 19...fg6 20.Ne4 Qd5 21.Qg4+/–) 20.Qb3 Nf6 21.Nc4 White prepares the advance a5 21...Nd5 22.Bc1 f5 23.Ne3 Rad8 24.Nd5 cd5 25.a5 f4 26.b6 f3 27.g4 ab6 28.ab6 Bb8 29.Qe3 (29.Rd1 Qf6 30.Be3 Qh4-+) 29...h6 (better is 29...Qf6 30.Qg5 Qd4–/+) 30.Kh1?? (better is 30.Rd1+=) 30...Qf6-+ 31.Kg1 0–1. Rex,Torsten – Ameri,Vincent (1900), Ivrea op, 2005.

6.Be2 Nbd7 7.0-0 e4 8.Nd4 Be2 9.Qe2=.

6.Be2 e4 7.d4 ef3 (7...Bb4!? 8.Nfd2 Be2 9.Qe2 0-0= 10.0-0 Nbd7 11.c3) 8.gf3+- Bb4 9.c3 Ba5? (better 9...Bf5!? 10.cb4 d5+- 11.Nc3) 10.fg4+- Qd7 (10...a6 11.a4+-) 11.Nd2 Nd5 (11...0-0 12.Qa4 Bb6 13.g5+-) 12.Qb3 c6 13.bc6 bc6 14.Nc4 Bd8 15.e4 Nf4 16.Qb7! Qb7 (16...Be7 17.Qa8 0-0 18.Na5 Ne2 19.h3+- (19.Ke2?! Qg4 20.Kf1 Qh3 21.Ke1 Qg2=)) 17.Nd6 Kd7 18.Nb7 Ne2 19.Nd8 Rd8 20.Ke2 Na6 21.Ke3 (21.c4 Rab8 22.Bc3 Re8+-) 21...Rab8 22.Ba3 c5 (22...Rb6 23.Rhb1+-) 23.Rab1 cd4 24.cd4 Nc7 25.Bc5 a6 26.d5 Nb5 (26...Re8 27.Kd3+-) 27.Rhc1 Na3 1–0. usingprogram (2030) – david37 (1660), kurnik, 2012.

6.Be2 e4 7.Nd4 Be2 8.Qe2=.

7.0-0 Bb6 8.a4 c6 (8...e4 9.Nd4 Be2 10.Qe2+=) 9.c3 (9.h3 Bf5=) 9...Nbd7= 10.d4 e4 11.Nfd2 Be2 12.Qe2 d5 (12...a6 13.bc6 bc6 14.Na3=) 13.Na3 (13.c4 Re8=) 13...Bc7 14.Rfc1 (14.Nc2 Qe7=+) 14...Re8 (14...Nb6 15.Nc2=+) 15.Nc2 Nf8 (15...Qe7 16.c4=+) 16.Ba3 Ng6 17.Ne1 (17.c4 Qd7=) 17...h5 (17...Nh4 18.c4=+) 18.h3 (18.c4 Nh4=+) 18...h4 (18...Nh4 19.c4=+) 19.c4= Qd7 20.cd5 (20.Nc2 Ne7=) 20...cd5=+ (< 20...Qd5 21.bc6 bc6 22.Qa6+=) 21.Bb4 Rac8 22.Nb3 Nh7 23.Qg4 Qg4 24.hg4 Nf6 25.Rc5 b6–/+ 26.Rc6 Bb8 27.a5 Rc6 28.bc6 Rc8 29.Rc1 Ng4–/+ 30.Nd2 Nf8 31.Ne4? de4-+ 32.d5 Ne5 33.ab6 ab6 34.f3 Nh7 35.f4 Ng4 36.d6 Bd6! 37.Bd6 Ne3 38.c7 Nf6 39.Be7 Ned5 40.Bd8 Ne8 41.f5 Nec7 42.Bh4 Re8 43.g4 Nb5 44.Rb1 Nbc3 45.Rb2 e3 46.g5 Re4 47.Rh2 Rg4 48.Kh1 b5 49.Nd3 b4 50.f6 Rd4 51.Ne1 Rd2 52.Rh3 b3 53.fg7 b2 54.Bg3 b1Q 55.Rh8 Kg7 56.Bf4 Kg6 (57.Rh6 Kf5 58.Bg3 Qe4 59.Kg1 Ne2 60.Kh2 Ng3 61.Kg1 Qb1 62.Rf6 Nf6 63.gf6 Qe1; 56...Qe1) 0–1. Wartenberg,Erwin – Telke,Juergen (1790), Rheinhessen–ch HT1 op, 1999.

7.0-0 Qd7 8.Nc3 (better is 8.Nh4=) 8...Ne4?? (better is 8...Bb4=) 9.Ne4+- f5 (9...Bb6+-) 10.Nc5 dc5 11.Ne5 (11...Be2 12.Nd7 Bd1 13.Nf8+- (13.Rad1?! Nd7 14.a4 a6+/–; 13.Rfd1?! Nd7 14.a4 Rfe8+/–)) 1–0. lim2 – Conniff163, Caissa.com, 2004.

7.0-0 e4 8.Nd4 Be2 9.Qe2=.

7.c4 Re8 8.0-0 Bb6 9.d4 e4 10.Nfd2 Be2 11.Qe2 c6 12.Nc3 d5 13.c5 Bc7 14.a4 Nbd7 15.a5 (15.f3!?=) 15...Ba5–/+ 16.bc6 bc6 17.Nb3 Bc7 18.Nd1 (18.Ra6!?–/+) 18...Qb8 19.Qc2 (19.Na5 Bh2 20.Kh1 Re6-+) 19...Bh2 20.Kh1 Ng4 (20...Bc7!? 21.Kg1-+) 21.g3 Bg3! 22.f4?? (22.fg3 Qg3 Combination) 22...Re6 23.Nc3 (23.Qe2 Rg6 24.Kg2 Qb3 25.Kh3-+) 23...Ne3 (23...Rh6 24.Kg1 Bh2 25.Qh2 Rh2 26.Ba3 Qd8 27.Ne2 Qh4 28.Bc1 Rh1 29.Kg2 Qh2) 24.Qe2 Nf1 (24...Rh6!? 25.Kg1 Bh2 26.Qh2 Rh2 27.Kh2 Qb3 28.Rfe1 Qb2 29.Ne2-+) 25.Rf1 Qb3 26.Kg2 Rb8 27.Rb1 (27.Ba1 Rg6 28.f5 Rg5-+) 27...Bf4 28.Ba1 Qc4 (better is 28...Qb1 29.Nb1 Rb1 30.Bc3-+) 29.Rb8 Bb8 30.Qc2 Rg6 31.Kh3 (31.Kf2 Qd4 32.Ke1 Qe3 33.Qe2 Rg1) 31...Qf1 0–1. harry74 – forsetinn (1670), gameknot.com, 2013.

7.d4 ed4 8.ed4 Bb6=.

5.c4 0-0 6.Ne2 Re8 7.Ng3 d5 (7...d6 8.d4 ed3 9.Bd3=+) 8.cd5 Nd5 9.Be2 (9.Qc2 Bf8 10.a3 f5=) 9...Nb4=+ 10.0-0 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Nd3 (13...Bd6 14.Nc3 f5 15.Bc4 Kh8 16.Qh5=) 14.Nc3 (14.Qc2 Bf8+/-) 14...f5= 15.f3 ef3 (15...Bd6 16.fe4 Bg3 17.hg3 fe4 18.Ne4+/-) 16.Rf3+/- g6? (better 16...Kh8+/-) 17.Na4+- b6? (17...Bb4 18.Qb3 Be6 19.Qd3 Qd3 20.Bd3 Nd7+-) 18.Qb3 Be6 19.Qd3 (better 19.Qc3 Bd4 20.ed4 Bd5 21.Qd3 Bf3 22.Qf3 Nd7+-) 19...Qd3 20.Bd3 Rd8 (20...Bd6 21.e4 Bb3 22.Nc3+-) 21.Nc5 bc5 22.Be2 (better 22.e4!? fe4 23.Ne4 Nd7+-) 22...Rd2 23.Rf1 (23.Be5!? Nd7 24.Bc7 c4+-) 23...Nd7 24.Rc1 Nb6? Black plans c4 (24...Kf7 25.Bf3+-) 25.Kf1 (better 25.Rc5!? Nd5+-) 25...Ra2 (25...Nd7 26.Ke1 Ra2 27.Bf3+-) 26.Ke1 (26.Be5 Nd5 27.Rc5 Ne3 28.Kg1 h5+-) 26...c4 27.Bd4 (better 27.Be5 Ra5 28.Rb1+-) 27...Na4?? (27...Ra5+-) 28.Rc4 (better 28.Bc4 Bc4 29.Rc4+-) 28...Bc4?? (better 28...Re2 29.Ne2 Bc4=+) 29.Bc4+- (29.Bc4 Kf8 30.Ba2+-) 1-0. BeepBeepImAJeep (2680) - PogosBest (2495), lichess.org, 2016.

5.c4 0-0 6.Bf6 Qf6 7.Nc3 Bb4 (better 7...Qe6!?=+) 8.Ne4 (8.Nd5 Qd6 9.Qb1 Bc5 10.Qe4 c6+=) 8...Qe5 (8...Qe7 9.Bd3+=) 9.Bd3+- d5 10.Nf3 Qe6 (10...Qf5!? 11.cd5 Qd5+-) 11.Neg5+- Qg4 12.h3 Qg2?? (better 12...Qh5 13.cd5 f5+-) 13.Rh2 Qh2 14.Nh2 h6 15.Nh7 (15.Ngf3 dc4 16.Bc4 Bh3+-) 15...Re8 (15...Rd8 16.Qc2 Bh3 17.cd5 Rd5 18.Nf3+-) 16.cd5 c6 (16...Bd6 17.Ng4 Re7 18.Nhf6 Kh8 19.Qf3+-) 17.Qb3 (17.dc6!? bc6 18.Ng4 Rd8+-) 17...Bd6 18.Ng4 (better 18.bc6 bc6 19.Ng4 c5+-) 18...cd5 (18...c5+-) 19.Qd5 Be7 (19...Rd8 20.Nh6! gh6 21.Ke2 Bg4 22.hg4+-) 20.Ne5 a6 (20...Be6 21.Qb7 Bd6 22.Nf7 Nd7 23.Nd6 Nc5 24.Nf6 Kh8+-) 21.Qf7 Kh8 22.Qe8 (22.Qe8 Bf8 23.Qf8) 1–0. Mickey – Guest2738, internet corr, 2018.

5.c4 d6 6.d4 Bg4 (6...Bb4!? 7.Nc3 0-0=) 7.Be2+= Be2 8.Ne2 0-0?? (better 8...Bb4 9.Bc3 Bc3 10.Nbc3 0-0+=) 9.dc5+- 1–0. Ddgs – Zizwe, internet, 2019.

5.d4 Bb4 (5...Be7 6.c4=+) 6.c3 Ba5 7.Nd2 d5 8.c4 (8.Nb3 c6=) 8...c6 (8...a6 9.Nh3–/+) 9.Ne2 (9.Nh3 0-0=+) 9...0-0 (9...dc4 10.a4 a6 11.bc6 Nc6 12.Nc3=+) 10.Ng3 (10.Nc3 Bf5=) 10...Ng4 (10...Be6!? 11.c5 Ng4–/+) 11.Be2= Qh4 12.h3?? (better is 12.bc6 bc6 13.cd5 cd5 14.Rc1=) 12...Ne3!-+ 13.Qb3 Ng2 14.Kd1 Qf4 15.Ngf1 Qf2 16.Qg3 Qg3 17.Ng3 Ne3 18.Kc1 Be6 19.Nh5 cb5 20.Nb3 Bc7 21.cd5 Nd5 0–1. Reimer,Karl – Zeilfelder,Andreas, Hagenbach Pfalz op, 1998.

5.Ne2 d5 6.c3 c6 7.a4 Bd7 8.Ng3 0-0 9.Be2 a6 10.c4 dc4 11.Bc4 ab5 (11...cb5!? 12.ab5 Re8=+) 12.ab5= Ra1 13.Ba1 cb5 14.Be2 (14.Bf6 gf6 15.Bd5 f5+=) 14...Bc6 15.0-0 Re8 16.f3 ef3 17.Bf3 Nbd7 18.Kh1 b4 19.Qb3 Qb6 20.Bh5 (20.Bf6 Nf6 21.d4 Bd6=+) 20...Bd5–/+ 21.Qd3? (better is 21.Qd1–/+) 21...Qa6-+ (21...Nh5?! 22.Nh5 Qa6 23.Qa6 ba6 24.Bg7-+) 22.Qa6 ba6 23.Bf6 (23.Rc1 Bd6 24.Nf5 Be5-+) 23...Nf6 (23...gf6?! 24.d4 Bd6 25.Nf5–/+) 24.Be2 (24.Bf3 Bf3 25.gf3 b3-+) 24…a5 (25.Rc1 Bd6-+) 0–1. Wiesing – Roos,C, 1988.

5.Ne2 d5 6.d4 Bd6 7.Ng3 Qe7 8.Be2 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 13.c4 dc4 14.bc6 bc6 (14...Nc6 15.d5 Be5 16.dc6 Ba1 17.Nd2+=) 15.Bc4 Ng4 16.h3 (16.Qe1 Qg5 17.f4 ef3 18.Rf3 Nh2 19.Kh2 Bg4+=) 16...Ne3 17.fe3 Bg3 18.Qh5 g6 19.Qh6 Qh4 (19...Ba6 20.d5 Be5 21.Be5 Qe5 22.Ba6 Na6 23.dc6–/+) 20.Qh4= Bh4 21.Nd2 Bg5 22.Kf2 (22.Ne4!? Be3 23.Kh2=) 22...Be6+= 23.Ke2 Bd5 24.Bd5 (24.Rb1 f5+=) 24...cd5–/+ 25.Rc1 Nd7 26.Rc7 Nf6 27.Bc3 Ra8 28.Nf1 Ra2 29.Bd2 h5 30.Rb7 Bh6 31.Rb8 Bf8 32.Rd8 Kg7 33.Rb8 Bd6 34.Rb5 h4 35.Rb6 Be7 36.Rb5 Ra7 (36...g5 37.Rb6-+) 37.Be1 g5 38.Bd2 Kg6 39.Be1 Ra2 40.Bd2 g4 41.hg4 Ra7 42.Rb8 Ng4 43.Rg8 Kf5 44.Rh8 Bf6 45.Rh5 Ke6 46.g3 hg3 47.Ng3 Be7 48.Rh8 (48.Nf5 Nf6 49.Ng7 Kd7-+) 48...Ra2 49.Nf1 Bb4 50.Rb8 Bd2 (50...Bd6!? 51.Rb5-+) 51.Nd2–/+ Ra3 52.Rb6 Kf5 53.Rb3 Ra2 54.Rb4 Ke6 55.Rb6 (55.Rb8 Nh2 56.Kd1–/+) 55...Ke7–/+ 56.Rb7 Kf8 57.Rb5 Nf6 58.Rc5 Kg7 59.Rc6 Kg6 60.Rc5 Ra4 (60...Kf5 61.Rc7 Ke6 62.Rc6 Ke7 63.Rc7 Nd7 64.Rc6–/+) 61.Rb5 Kf5 62.Rb7 Ke6 63.Rb6 Ke7 64.Rb7 Nd7 65.Rc7 f5 66.Rc8 Ke6 (66...Nf6 67.Rc7 Kd6 68.Rb7-+) 67.Rc1? (better is 67.Rc6!? Kf7 68.Rc7=) 67...Nf6 68.Rb1 (68.Rc6 Ke7-+) 68...Ng4 (68...f4 69.ef4 Rd4 70.Nb3-+) 69.Rb3 (69.Rb6 Kd7–/+) 69...Ra2 70.Rb6 Ke7 71.Rb8? (better is 71.Rb7 Ke8 72.Rb6-+) 71...f4! 72.ef4 e3 73.Rg8 (73.Rb1 ed2 74.Rd1-+) 73...Rd2 (73...ed2?! 74.Rg4 Ra4 75.Kd2 Rd4 76.Ke3 Re4 77.Kd3=) 74.Ke1 Nf2 0–1. Sebesta,Petr – Olsar,Z (1960), Orlova CZE, 2013.

5.Ne2 d5 6.Ng3 c6 7.a4 0-0 8.Be2 Re8 9.0-0 Qe7 10.d3 Bd6 11.de4 Ne4 12.Nd2 (12.Ne4 Qe4 13.Nd2 Qg6=) 12...Nd2 (12...Ng3 13.hg3 Be6 14.Nf3=+) 13.Qd2= g6 (13...Qg5 14.a5=) 14.c4 Be5 (14...Be6!?+=) 15.Be5+/- Qe5 16.Rac1 (16.cd5 Qd5 17.Qd5 cd5+/-) 16...dc4+= 17.Bc4 Be6 18.Rfd1 a6 19.Be6 Qe6 20.Qd3 (20.b6!?+/-) 20...ab5+= 21.ab5 cb5 22.Qb5 Nc6 (22...b6 23.Rb1+=) 23.Qb7+/- Ne5 24.Ne2 Ng4 25.h3?? (25.Nd4 Qf6 26.Rd2 Ne5+/-) 25...Nf6?? (better 25...Nf2 26.Rf1 Nd3-/+) 26.Nd4+/- Qe5 27.Qc6 Rad8 28.Rc5 Qe7 29.Rcc1 Ne4 (29...Qe5 30.Qf3 Ne4+/-) 30.Qc2 Nd6? (30...Qf6 31.Nb5+/-) 31.Nf3 (better 31.Nc6 Qe6 32.Nd8 Rd8 33.Qc7+-) 31...Nf5 32.Qe2 Rc8 33.Rc8 Rc8 34.Qd3 Re8 35.g4 (35.Qd7 h6+/-) 35...Nh4 36.Nd4 Qf6 37.Qf1 Nf3 38.Nf3 Qf3 39.Rd4 Re4 (39...Rc8 40.Qg2 Qe2 41.Qg3+/-) 40.Re4 Qe4 41.Qg2 Qe6 42.Kh2 Kg7 43.Qg3 Qf6 (43...Qe4 44.g5+/-) 44.Kg2 (44.g5 Qf5+-) 44...h6+/- 45.Qf3 Qe6 46.Kg3 g5 47.Kg2 Qe5 48.Qg3 Qe6 49.Qf3 Qe5 50.Qf5 (better 50.Qc6+/-) 50...Qe6?? (better 50...Qf5 51.gf5 Kf6+=) 51.Qe6+- fe6 52.Kf3 Kf6 53.Ke4 e5 (53...Kg7 54.Ke5 Kf7+-) 54.f4 (better 54.Kd5 e4 55.Ke4+-) 54...Ke6?? (better 54...gf4 55.ef4 ef4 56.Kf4 Ke6+/-) 55.f5 (better 55.fe5 Ke7+-) 55...Kf6 (55...Kd6 56.f6 Ke6+-) 56.Kd5 h5 57.e4 hg4 58.hg4 Kg7 59.Ke5 Kh6 (59...Kf8 60.Kf6 Ke8 61.Kg5 Ke7 62.e5 Kd7 63.e6 Ke7 64.Kh6 Kd6 65.Kg7 Ke7 66.g5 Kd6 67.Kf7 Ke5 68.f6 Kf4 69.g6 Kg4 70.g7 Kf3 71.e7 Ke2 72.e8Q Kd2 73.g8Q Kc3 74.Qg3 Kb4 75.Qc6 Ka5 76.Qgc3) 60.Ke6 Kh7 (60...Kg7 61.f6 Kh7 62.Ke7 Kg8 63.f7 Kg7 64.f8Q Kg6 65.Qe8 Kg7 66.e5 Kh6 67.Kf8 Kh7 68.Qh5) 61.f6 (61.Kf7 Kh8 62.Kf8 Kh7 63.e5 Kh6 64.e6 Kh7 65.e7 Kh6 66.e8Q Kh7 67.Qh5) 61...Kh6 (61...Kg6 62.e5 Kh7 63.Kf7 Kh8 64.e6 Kh7 65.e7 Kh6 66.e8Q Kh7 67.Qe4 Kh6 68.Qg6) 62.Kf5 (62.Ke7 Kg6 63.f7 Kg7 64.f8Q Kg6 65.Qe8 Kg7 66.e5 Kh6 67.Kf8 Kh7 68.Qh5) 62...Kh7 63.Kg5 (63.e5 Kh8 64.Ke6 Kg8 65.Ke7 Kh7 66.Kf8 Kh8 67.e6 Kh7 68.e7 Kg6 69.e8Q Kf6 70.Qe7 Kg6 71.Qg7) 63...Kg8+- 64.Kf5 Kf7 65.e5 Kf8 66.e6 Kg8 (66...Ke8 67.Ke5 Kd8 68.Kd6 Ke8 69.g5 Kd8 70.f7 Kc8 71.Kc6 Kb8 72.Kb6 Kc8 73.f8Q) 67.e7 (67.g5 Kf8 68.Ke5 Ke8 69.Kd6 Kd8 70.f7 Kc8 71.Kc6 Kb8 72.Kb6 Kc8 73.f8Q) 67...Kf7 68.Ke5 (68.g5 Ke8 69.g6 Kd7 70.g7 Kc6 71.e8Q Kb6 72.Qe7 Kb5 73.g8Q Kc6 74.Qc4 Kb6 75.Qec7) 68...Ke8 69.g5 Kf7 70.Kd6 (70.g6 Ke8 71.g7 Kf7 72.Kf5 Ke8 73.g8Q Kd7 74.e8Q Kc7 75.Qb5 Kd6 76.Qd8) 70...Ke8 71.f7! Kf7 72.Kd7 Kg6 73.e8Q Kg5 (73...Kf5 74.g6 Kg4 75.Qe4 Kg5 76.g7 Kf6 77.g8R Kf7 78.Qe6) 74.Qe7 (74.Qe4 Kf6 75.Qf4 Kg7 76.Ke6 Kg6 77.Qg3 Kh5 78.Kf5 Kh6 79.Qg6) 74...Kg4 75.Qe6 Kg3 76.Qf7 Kg2 77.Qg8 Kf2 78.Ke6 Ke3 (78...Kf3 79.Qf8 Ke3 80.Kd5 Ke2 81.Kd4 Kd1 82.Qf2 Kc1 83.Kc3 Kd1 84.Qd2) 79.Kd5 (79.Ke5 Kf3 80.Qb3 Kg4 81.Qd3 Kg5 82.Qg3 Kh5 83.Kf5 Kh6 84.Qg6) 79...Kd3 (79...Kf3 80.Qg5 Ke2 81.Ke4 Kf2 82.Qd2 Kg3 83.Qf4 Kg2 84.Qf3 Kh2 85.Qg4 Kh1 86.Kf3 Kh2 87.Qg2) 80.Qg4 (80.Qg3 Ke2 81.Kd4 Kd2 82.Qg2 Kc1 83.Kc3 Kd1 84.Qd2) 80...Kc3 (80...Ke3 81.Qg3 Ke2 82.Kd4 Kf1 83.Qh2 Ke1 84.Ke3 Kd1 85.Qd2) 81.Qg3 (81.Qe2 Kb4 82.Qb2 Ka4 83.Kc4 Ka5 84.Qb5) 81...Kc2 82.Kd4 (82.Kc4 Kd2 83.Qf2 Kd1 84.Kd3 Kc1 85.Qc2) 82...Kb2 83.Qd3 (83.Qd3 Ka2 84.Kc3 Ka1 85.Qb5 Ka2 86.Qb2; 83.Qf2 Kb3 84.Kd3 Kb4 85.Qb6 Ka4 86.Kc4 Ka3 87.Qb3) 1-0. BeepBeepImAJeep (2695) - PogosBest (2480), lichess.org, 2016.

5.Bf6 Qf6 6.Nc3 Qf5=.

5.a4 0-0 6.Nf3 Bd6 (6...d6 7.Be2=) 7.c4 (7.Be2 e4 8.Nd4 Be5=) 7...a6 8.Be2 c5 (8...e4 9.Nd4=) 9.d3= e4 (9...Bc7 10.Nc3=) 10.Nfd2 (10.de4!? Ne4 11.Nc3 Nc3 12.Bc3+=) 10...ed3 11.Bd3 Be5 12.Nc3 b6 (12...Rd8 13.Qc2+=) 13.Nf3 (13.Qf3 Ra7 14.Nd5 Nd5+-) 13...Bc7 (13...d6 14.Ne5 de5 15.Qf3=) 14.h3 Bb7 15.Be2 (15.0-0 Rd8+=) 15...Rd8 16.Qc2 d5 17.cd5 Nd5 18.Nd5 Bd5 19.Qc3 f6 20.Bc4 (20.0-0 Qe6=) 20...Bc4 21.Qc4 Qf7 22.Qc3 Nd7 23.0-0 Ne5 24.Ne5 Be5 25.Qc2 Qc7 (25...Qe6 26.Be5 fe5 27.ba6 Ra6 28.Rfd1=) 26.Be5 Qe5 (26...fe5 27.ba6 Kh8 28.Qc4+=) 27.ba6+= Qe6 28.Qe2 Qc8 29.Qc4 Kf8 30.Qe4 (30.Rfd1 Rd1 31.Rd1 Qa6+-) 30...h6 31.Rfd1 Qa6 32.Qc6 Rd1 33.Rd1 Qa4?? (better 33...Kg8+-) 34.Rd8!!+- (34.Rd8 Rd8 35.Qa4+-) 1–0. Kislov,Leonid – Smirnov,Vladimir O, 2012.

5.c4 0-0 6.a4 a6 7.d4 ed4 8.Bd4=+.

5.c4 0-0 6.a4 d5 7.cd5 Bg4 (7...Nd5 8.Nc3 Nc3 9.Bc3=+) 8.Be2 Be2 9.Ne2 Nd5 10.0-0 Nd7 11.d4 ed4 12.Nd4 N7f6 13.Nf5 Qe6 14.Qf3 Rad8 15.Nc3 Nb4 (15...Nb6 16.Ne2 Nbd5 17.Rad1+/-) 16.Rad1 (better 16.Ng7!? Kg7 17.Ne4+/-) 16...Nd3= 17.Ba1 Ne5 18.Qf4 Ng6 19.Qg5 h6? (better 19...Bd6 20.Nd6 cd6+=) 20.Nh6!+- gh6 21.Qc5 1-0. BeepBeepImAJeep - AMADAN (2430), lichess.org, 2016.

5.c4 0-0 6.a4 d6 7.Nf3 Be6 (7...a6 8.d4 ed4 9.Nd4 ab5 10.cb5=+) 8.Be2 Nbd7 (8...e4 9.Nd4=) 9.0-0= e4 10.Nd4 Ne5 11.Nb3 (11.Qc2!?=) 11...Nc4–/+ 12.Bc3 (12.Bf6 Qf6 (< 12...gf6 13.Qc2 d5 14.Bc4 dc4 15.Nc5 Qc5 16.Qe4+=) 13.Nc3 Qe5=+) 12...Nd7 13.Qc2 Qg5 (better is 13...Nce5–/+) 14.f4?? (14.Qe4!? d5 15.Qc2=) 14...Ne3 15.de3–/+ Be3 16.Kh1 Bf4 17.Be1? Be5 18.Nc3 Qh6 19.g3 c6 20.Rd1 d5 21.Na5 Bh3 22.Rg1 Rab8 23.Nb7? Rb7 24.bc6 Qc6 25.Bb5 Rb5 26.ab5 Qc4 27.Rd5 Bc3 (28.Rd1 Rc8 29.Bc3 Qc3 30.Qc3 Rc3-+) 0–1. Daehne,Armin – Ittner,H, BdF, 1986.

5.c4 0-0 6.Nf3 d6=+.

5.c4 a6 6.a4 (6.Nf3 ab5 7.cb5 e4=+) 6...0-0 (6...ab5 7.cb5 d5 8.Nf3=+) 7.Nc3 c6 (7...d6=+) 8.e4? (better 8.Nf3!?=) 8...d6 9.Be2 Be6 (9...ab5!? 10.ab5 Ra1 11.Ba1 Ng4 12.Bg4 Qh4–/+) 10.Nf3=+ Ng4 (10...ab5!? 11.cb5 Bb4=+) 11.0-0= f5 (11...ab5 12.ab5 Ra1 13.Qa1=) 12.d4+= Ba7 (12...ed4!? 13.Nd4 Ne5 14.ef5 Bc4+=) 13.h3+- fe4 14.Ne4 Nf6 15.Nf6 gf6 16.de5 (better 16.d5!? cd5 17.cd5+-) 16...de5+= 17.Ba3 c5 (17...Bc5 18.Bc5 Qc5 19.Bd3+=) 18.Bc1 (18.Qc2 Nd7+-) 18...Kh8 (18...e4 19.Nh4 Nd7 20.ba6 ba6 21.Ra3+-) 19.Ne1 (better 19.Qc2!?+-) 19...Rg8= 20.Kh1 Nd7 21.f4 (21.ba6 ba6 22.Qc2 Rab8=) 21...ef4 (21...Bb8 22.Rb1=) 22.Bf4= Rae8 (22...Bb8 23.Bb8 Rab8 24.Nf3=) 23.Bd6 (23.Qc2 Bb8 24.Bb8 Rb8+=) 23...Qg7= 24.Ra3 Nb6 (24...Ne5!? 25.Qc2 Rd8 26.Be5 fe5 27.ba6 ba6=) 25.Qc2+= Bc4 (25...ab5 26.ab5 Bb8 27.Rg3+=) 26.Bc4+- Nc4 27.Rg3?? (better 27.Qc4 Re1 28.Rg3 Rf1 29.Qf1+-) 27...Qf7–/+ 28.Rg8 Qg8 (28...Kg8 29.Bf4–/+) 29.Bh2?? (better 29.Qc3 ab5 30.ab5=+) 29…Ne3-+ (29...Ne3 30.Qc3 Nf1 31.Qf6 Qg7 32.Qf1 Qa1-+) 0–1. Martine,Jean_Marie (1860) – Burgaud,Jacques (1870), France, 2000.

5.c4 d5 6.Nf3 Nbd7 7.Be2 c6 8.0-0 0-0 9.a4 (9.d4 ed4 10.Nd4 dc4 11.bc6 Ne5=) 9...Ne4 (9...e4!? 10.Nd4 dc4 11.Bc4 Ne5+=) 10.d4 ed4 11.Nd4 Ne5 (11...dc4 12.Qc2 cb5 13.ab5+=) 12.bc6 (12.cd5!? cd5 13.Nc3 Nc3 14.Bc3+=) 12...Nc4= 13.Bc4 dc4 14.Nc3 Nc3 15.Bc3 Rd8 16.Qc2 Bd4 (16...Qc7 17.Rab1+=) 17.Bd4 Be6 18.Qc3 f6 19.cb7 Qb7 20.Rfb1 Qc7 21.Rb5 Rdb8 22.Rab1 a6 23.Rb6 Rb6 24.Rb6 Rb8 25.a5 Rb6 26.ab6 Qc6 27.h4 Bc8 28.Qb4 Kf7 29.h5 Bb7 30.f3 h6 31.Qb1 a5 32.Qg6 Kf8 33.Qf5 Qd5 34.Qh7 ½–½. Lorenc,Tomas (2150) – Gutman,Petr (2170), CZE–chT2b, 2006.

5.c4 d6 6.Nf3 =+.

5.d3 d5=+ 6.Nd2 0-0 7.Ngf3 d4 8.e4 a6 9.a4 ab5 10.ab5=+ Ra1 11.Qa1 Rd8 12.Be2 Bg4 13.0-0 c6 14.c3= dc3 15.Bc3 Nbd7 16.bc6 bc6 17.h3 Bh5 18.g4+= Bg6 19.Ne5 Ne5 20.Be5 Nd7 21.Bf4 f5 22.d4+/– Bb4 23.Bc4 Kh8 24.ef5 Bd2 25.Bd2+- Qh4?? 26.Qa5 h5 27.fg6 hg4 28.Bg5 (28...Re8 29.Bh4+-) 1–0. Werk,Manfred – Meizinger,Mathias, Baden–ch JS Karlsruhe, 2003.

5.Nf3 d6 6.d4 ed4 7.Nd4 0-0 8.Nb3 Nbd7 9.N1d2 Re8 10.Nc5 Nc5 11.Qf3 Nce4 12.Ne4 Ne4 13.Bd3 a6 14.a4 d5 15.0-0 Qg5 16.Qe2 c5 17.bc6 bc6 18.a5 c5 19.Rfd1 Rb8=+ 20.Rdb1 Rb4 21.Qe1 Nd6 22.Ba3 Bh3=+ 23.g3 Rb1 24.Rb1 c4 25.Bf1 (25.Bd6 cd3 26.cd3 Qg6=) ½–½. nordlicht – Dragonwolves, mySchach.de, 2004.

5.Nf3 d6 6.d4 ed4 7.Nd4 0-0 8.Be2 a6 9.a4 ab5 10.ab5=+ Ra1 11.Ba1 c6 12.c4 Bb4 13.Bc3 d5 14.0-0 Bc3 15.Nc3 dc4 16.Bc4 ½–½. Schwichtenberg,Juergen – Wieprecht,Gerhard, Hessen–ch Seniors, 2003.

5.Nf3 d6 6.Be2 0-0 7.0-0 Re8 8.d3 a6=+ 9.a4 Bg4 10.Nbd2 Nbd7 11.Nb3 ab5 12.ab5 Bb6 13.Qd2 Nf8 14.Ra8 Ra8 15.Ra1 Ra1 16.Ba1 c6 17.Qb4 Qc7 18.c4 Ne6 19.h3 Bh5 20.g4 Bg6 21.Nh4 Nf8 22.Nf5 Bf5 23.gf5 c5 24.Qa3 Qc8 25.e4 ½–½. Harding,Timothy David – Plijter, corr ICCF EU–M–873, 1989.

5.Nf3= e4 6.Nd4 0-0 7.Nf5 Qe6 8.g4 Ne8 9.d4 Bb4 10.c3 Ba5 11.Qa4 g6 12.Qa5 gf5 13.gf5 Qf5 14.Rg1 Kh8 15.c4 (15...Rg8 16.d5 f6 17.Rg8 Kg8 18.Nc3+/–) 1–0. Van Rooijen,Peter (1695) – Ward,Tim, internet, 2002.

5.Nf3 e4 6.Nd4 Bd4 7.Bd4 d5 8.Nc3 c6 9.d3 0-0 10.bc6 bc6 11.de4 Ne4 12.Ne4 Qe4 13.Qd3 Ba6 14.Qe4 de4 15.Rb1 Bf1 16.Rf1 Nd7 17.Rb7 c5 18.Rd7+/– cd4 19.ed4 Rfe8 20.Kd2+- Red8 21.Rd8 Rd8 22.Ke3 f5 23.f3 g5? 24.fe4 f4 25.Kd3 h5 26.c4 Rb8 27.d5 Kf8 28.e5 Rb2 29.e6 Rg2 30.c5 Rh2 31.c6 Ke8 32.c7 Rh3 33.Kd4 f3 34.c8Q Ke7 35.Ke5 g4 36.d6 1–0. Taulien,Hans_Juergen – Moeller,Florian, remoteschach.de, 2003.

5.Nf3 e4 6.Nd4 d5=.

5.Kf2 Ne4 6.Ke1 d6 7.Bf4 (better is 7.Bd4+-) 7...Qf6+/– 8.d3 Qa1 9.de4 Be6 10.Nf3 Nd7 11.a3 0-0 12.Bd2 Nc5 13.Bc3 Qa2 14.Nd4 (14.e5!? Ne4 15.ed6 cd6 16.Bb4+=) 14...Ne4+= 15.Bb4 Rfe8 16.e3 a6 (16...Bg4 17.Qc1 (worse is 17.Qg4 Qb1 18.Ke2 a5–/+) 17...Qd5 18.Nc3=) 17.Bd3 Bg4 18.Qc1 (18.Qg4 Qb1 Deflection) 18...Qd5–/+ 19.c4 (19.Rf1 Qg5 20.Be4 Re4–/+) 19...Qe5 (19...Qg5 20.Be4 Re4 21.Kf2 Qf6 22.Kg3 Qe5 23.Kf2–/+) 20.Nf3 (better is 20.Be4!? Qe4 21.Kf2+=) 20...Qh5–/+ 21.Be2 ab5-+ 22.h4 bc4 23.Nd4 c5 24.Bc5 dc5 25.Bg4 Qg4 26.Nf3 Qg3 (26...Qg3 27.Kd1 Qg2-+) 0–1. Baer,Cy (1895) – Convent,Christoph (1915), RSS5E–10 remoteschach.de, 2007.

5.Kf2 Ne4 6.Ke1 f6 7.Bf4 g5 +-.

5.Kf2 Ne4 6.Ke1 Qh4 7.g3 Qg5 8.Bf4 (8.Nf3 Qg4 9.Bc7 d5+–) 8...Qg6 (8...Qb5 9.Bg2 d5+–) 9.e3 (9.Bc7 Qf6 10.Nf3 Qa1=) 9...d5 10.Bc7?? (10.d3 Bg4 11.Be2 Be2 12.Ne2 Nf6+–) 10...0-0?? (better is 10...Qf6 11.Nf3 Qa1=+) 11.Bd3 (11.Qf3!? d4+–) 11...Qf6 12.Qf3?? (12.Be4 Qa1 13.Bd5+–) 12...Qe6?? (better is 12...Qa1 13.c4 f5-+) 13.Ne2+– Bd7 (13...Nd7 14.Nd4 Qe7 15.Qh5+–) 14.Nd4 Qe7 15.Nc3 Nd6 (15...Nc3 16.dc3 Rc8 17.Bb8 Rab8+–) 16.Nd5 (16...Qe5 17.Nc3+–) 1–0. MasterofDisaster – 2phypeach, Live Game Caissa's Web, 2004.

5.Kf2 Ng4 6.Ke1 Ne5 7.d4? (7.Nc3 d6–/+) 7...Nc4?? (better is 7...Qh4 8.g3 Qe4 9.de5 Qh1-+) 8.Nf3 (8.Qd3 d5=+) 8...Qe7–/+ 9.c3 d5 10.Qc1 Bf5 11.Qg5 Qg5-+ 12.Ng5 Ne3 13.Na3 0-0 14.g3 Nd7 15.Rc1 a6 16.Kd2 ab5 17.Ke3–/+ Ra3 18.Bh3? Bh3 19.Nh3 Ra2 20.Rhe1 Nf6 21.Kd3 Rfa8 22.Rb1 c6 23.Nf2 Ne8 24.Ke3 Nd6 25.Kf3 R2a3 26.Rbc1 b4 27.Nd1 b5 28.Kg2 b3 29.Rb1 Nc4 30.Kh3 Ra1 31.Nf2 b2 32.e4 Rb1 33.Rb1 Ra1 34.Ra1 b1Q (35.Ra8; better is 34...ba1Q 35.Ng4 de4-+) 0–1. Norstrom,K – Sjolund,M, corr SSKK 3–1300, 1993.

5.Kf2 Ng4 6.Ke1 Ne5 7.Nf3 Nf3 8.ef3 0-0 9.Nc3 d5 10.Kf2 Qh4 11.g3 Qd4 12.Kg2 f5 13.Qe2 Bd7 14.Qd3 Qf6?? (better is 14...Qd3 15.Bd3 Be6=) 15.Qd5+- Be6 16.Qb7 Nd7 17.Qc7 Rac8 18.Qa7 f4 19.Be2 fg3 20.hg3 Rc3 21.dc3 Bd5 22.Raf1 (worse is 22.Qd7 Bf3 23.Kh2 Be2 24.Qd5 Rf7+-) 22...Ne5 23.Qd4 Bf3 (23...Qe6 24.Rh5 Ng4+-) 24.Bf3 Nf3 25.Qd5 Kh8 26.Rf3 (26.Rf3 Qd8 27.Rf8 Qf8 28.b6+-) 1–0. usingprogram (2045) – szakill, kurnik, 2011.

5.Kf2 Ng4 6.Ke1 Ne5 7.Nf3 Nf3 8.ef3 0-0 9.Nc3 Qf6 (9...Re8 10.Kf2-/+) 10.Kf2 Qd4 11.Kg3 d6 12.Bd3 Be6 (12...h5 13.h4=+) 13.Re1 (13.Qe2 d5=) 13...Nd7=+ 14.Qe2 Rae8 (14...Nc5!?=+) 15.Qe4= Threatening mate... how? 15...Qe4 16.Be4 Nf6 (better 16...Nc5!?=) 17.Bb7+/- Rb8 18.Bc6 Bc4 (18...d5 19.d4+-) 19.a4 Be6 20.Ne2 d5 (20...Rfd8 21.Nd4 Nh5 22.Kh4+-) 21.Nf4 Rbd8 (21...Bf5 22.Nd5 Nd5 23.Bd5+-) 22.Ne6 fe6 23.Re6 Rb8 (23...Kf7 24.Re5+-) 24.Rae1 (24.d4 Rf7+-) 24...Rb6 (24...d4 25.a5+-) 25.Re7 Nh5 (25...Rf7+-) 26.Kf2 Nf4 (26...Nf6 27.Rc7 Rf7 28.Ree7 Re7 29.Re7+-) 27.Rc7 (27.Rc7 a5 28.Ree7+-) 1-0. DEFFM – GuestGPRP, freechess.org, 2020.

5.Kf2 Ng4 6.Ke1 Ne5 7.Nf3 Nf3 8.ef3 Qf6 9.Qe2?? (better is 9.Nc3=+) 9...Kd8-+ 10.Nc3 Re8 11.Ne4 (11.Qe8 Ke8 12.Kd1 a6-+) 11…Qa1 (12.Qd1 Qb2-+) 0–1. Bini,Gabriele – Kautzsch,Klaus, Canarias en Red prel 1st, 2004.

5.Kf2 Ng4 6.Kg3 Ne5 7.Nf3 Nf3 8.ef3 Qg5 9.Kf2 Qh4 10.Ke3 –/+.

4.e3 c6 5.Nf3 (5.Be5!? 0-0 6.d4+/–) 5...d6= 6.a4 (better is 6.d4 ed4 7.ed4=) 6...e4 (better is 6...0-0!?=) 7.Bg7+/– Rg8 8.Bh6 Qf6 9.Nc3?? (better is 9.d4 ed3 10.c3 Qh6 11.Qd3+/–) 9...Qh6?? (better is 9...ef3 10.Ne4 Qh6 11.Qf3 Qg7=+) 10.Ne4+– Bb4 11.Be2 Rg2+/– 12.Ng3 cb5? 13.ab5 Qf6 14.c3 Bc5 15.h4 Bg4 16.Kf1 Bf3 17.Bf3 Rg3 18.fg3 Nd7 19.Kg2 Ne5 20.Bb7 Rb8 21.Rf1 Qe7 22.Ba6 Nc4 23.b6! ab6 24.Bc4 Qe4 25.Qf3 Qc4 26.d4 Qc3 27.Qf7 Kd8 28.Qf8 Kc7+– 29.Qg7 Kc6 30.d5! Kd5 31.Qc3 h5 32.Qd3 Kc6 33.Qe4 Kc7 34.Ra7 Kc8 35.Rf8 1–0. pumpkin (2255) – joesim, net–chess.com, 2006.

4.e3 Qe7 5.Nf3 d6 6.Bc4=.

4.Be5 Ke7?? 5.Bg7+– Bf2 (5...Nf5 6.Bh8 Qh8 7.c3+–) 6.Kf2 Nc6 (6...Rg8 7.Bh6 Ke8 8.Nf3+–) 7.Bh8 (better is 7.e4 Rg8 8.Bh6 Ne5+–) 7...Qh8 8.Nc3 (8.c3 Ng4 9.Ke1 Nce5+–) 8...Ng4 9.Ke1 b6 (9...Qd4 10.Nh3 Ne3 11.de3 Qc3 12.Kf2 Nb4+–) 10.bc6 Ba6 (10...dc6 11.Qb1+–) 11.Qb1 Bc4 (11...Qg7 12.Qb2 Ke8 13.cd7 Kd7 14.Nf3+–) 12.Qb4 Ke6 13.Qc4 Kf5 14.Qf7 Ke5 15.Nf3 Kd6 16.Qd7 Kc5 17.Qd5 Kb4 18.a3 1–0. Taulien,Hans_Juergen – Baum,Sebastian, remoteschach.de, 2001.

4.Be5 Bf2 5.Kf2 Ng4 6.Ke1 Ne5 =+.

4.e3 a6 5.a4 ab5 6.cb5 c6 7.Nf3 cb5 8.Bb5 Bd7 9.Bd7 Nd7 10.d4 Qa5 11.Bd2 Bb4 12.Bb4 Qb4 13.Qd2 Qd2 14.Nbd2 ed4 15.Nd4 Ngf6 16.0-0 0-0 17.e4 Ra5 18.f4 Rfa8 19.f5 Ra4–/+ 20.Ra4 Ra4 21.Nb5 Ne4 22.Rf4? Ra1 23.Rf1 Nd2?? 24.Ra1+- Nb6 25.Rd1 Ne4 26.Nd6 Nd6?? 27.Rd6 Nc4 28.Rd8# 1–0. fly – SarahThompson6, Caissa's Web, 2004.

4.f3 Qh4 5.g3 Qc4 6.e4?? Qd4-+ 7.Nc3 Qf2# 0–1. boysie – verbal, net–chess.com, 2002.

4.Bb2 d6 (--> 3.Bb2 d6 4.e3 a6).

4.Qf3 d6 5.Bb2 =+.

4.Qf3 Qf6 5.Qd5 (5.Nc3 ab5 6.Nd5 Qd8=) 5...d6=+ 6.Bc4 (6.ba6 Na6 7.Bb5 Kd8=+) 6...Ne7 (6...ab5 7.Be2–/+) 7.Qd3 (7.Qf3 Qf3 8.Nf3 d5=+) 7...d5! 8.Bb3 (8.Qd5 Nd5) 8...e4 (better is 8...Bf5 9.Qc3 Bd6–/+) 9.c3?? (better is 9.Qc3–/+) 9...ed3-+ 10.Ba4 Qb6 (better is 10...Bd7!? 11.Ba3 Ba3 12.Na3 ab5 13.Nb5-+) 11.ba6 Nbc6 12.Nf3 Ra6 13.Bc6 Qc6 14.Ne5 Qd6 15.Nf3 0-0 16.Bb2 Nc6 17.c4 dc4 18.Nc3 Ne5 19.Ng5 Qd7 20.Nce4 Ba3 21.Be5 Bd6 22.Bd4 Re8 23.Bg7 Kg7 24.0-0 Be5 25.Rab1 Ra2 26.f4 Bd6 27.Rf3 f6 28.Nh3 Re4 29.Rg3 Kh8 30.Kf2 Rd2 31.Ke1 Re2 32.Kd1 R4e3 33.Re3 (33.Ng1 Qa4 34.Rb3 Qb3 35.Kc1 Qc2) 0–1. manofsteel3 – active1, Live Game Caissa's Web, 2005.

5.ed4 Ba7 6.a4 (6.Nf3 ab5 7.Bb5 Qe7 8.Be2 Nf6=) 6...ab5 (6...Ne7 7.Nf3+=) 7.ab5+= Qf6 (7...d5!? 8.Nf3 Ne7+=) 8.Nf3+- b6? (better 8...Ne7+-) 9.Bc4+- Bb7 (9...Ne7 10.Bg5 Qf5 11.Qe2+-) 10.Bg5 Qg6 (10...Qf5 11.Qe2 Kf8 12.0-0 Bf3 13.Qf3 Qf3 14.gf3+-) 11.0-0 d5 (11...Nf6 12.Re1 Ne4+-) 12.Re1 Kd7 (12...Kf8 13.Bc1 Nd7 14.Ba3 Qd6 15.Bd6 cd6+-) 13.Ne5 (13.Ne5 Kc8 14.Ng6+-) 1–0. GuestLZLP – GuestTHPT, freechess.org, 2020.

5.ed4 Bb4 6.c3 Bd6 7.Bd3 ab5 8.Nf3 c6 9.0-0 Na6 10.Re1 Ne7 11.Ng5 0-0?? (better 11...h6 12.Qh5 0-0=) 12.Bh7+- (12.Nh7?! Re8 13.Nf6 gf6 14.Re7 Kf8+-) 12...Kh8 13.Qh5 Ng6 (13...g6 14.Bg6 Kg7 15.Qh7 Kf6 16.Re6 de6 17.Ne4) 14.Bg6 (14.Bg6 Kg8 15.Qh7) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 Bb6 6.Nf3 ab5 7.Bb5 c6 8.Bd3 Ba5 9.c3 h6 10.0-0 Ne7 11.Qc2 0-0 12.Nbd2 (12.Re1 d5+=) 12...d5 13.Re1 Bg4 14.Rb1 b5 15.Ne5 Be6 16.Ba3 Nd7? (better 16...Bc7 17.Bb4 Re8+=) 17.Be7+- Qe7 18.Nc6 Qg5 (18...Qd6 19.Na5 Ra5 20.Rb5 Rb5 21.Bb5+-) 19.Nf3 (better 19.f4 Qf4 20.Ne7 Kh8 21.Re6+-) 19...Qf4?? (19...Qf6+-) 20.Ne7 (20.Na5?! Ra5 21.Rb5 Rb5 22.Bb5 Qc7+-) 20...Kh8 21.Re6! (21.Rb5?! Qd6 22.Nf5 Qc7+-; 21.Bb5?! Qd6 22.Nc6 Bc7+-) 21...Rfe8 (21...fe6 22.Ng6 Double attack) 22.Nd5 Qb8 23.Re8 Qe8 24.Bb5 Qd8 (24...Qe6 25.Bd7 Qd7 26.Qe4+-) 25.Qf5 Nb6 (25...Nf6 26.Ne5 Kg8 27.Bc4+-) 26.Bd3 (better 26.Nb6 Qb6 27.Ne5 Qf6 28.Nf7 Kg8 29.Nh6 Kf8+-) 26...Qg8 (26...g6 27.Qe5 Kg8 28.Ne7 Kh7 29.Nc6+-) 27.Nb6 Bb6 28.Rb6 Ra2 29.Rb8! Ra1 (29...Qb8 30.Qh7 Mate attack) 30.Bb1 Rb1 31.Qb1 Qb8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 Bb6 6.Nf3 d5 7.ba6 Na6 8.Bd3 Nf6 9.Qe2 Be6 10.Ba3 h6 (10...Nd7 11.0-0=) 11.Bf5 (better 11.0-0+=) 11...Qd7? (better 11...Qc8!=) 12.Ne5+- Qc8 13.Ng6! Rh7? (13...fg6 14.Qe6 Double attack (14.Qe6 Discovered attack; 14.Qe6 Deflection)) 14.Nf8 Rh8 (14...g6 15.Ne6 fe6 16.Be6 Qd8 17.Bd5 Re7 18.Be7 Qe7 19.Bb7 Ra7 20.Qe7 Ke7 21.Ba6 Ra6+-) 15.Ne6 (15.Be6?! fe6 16.Ng6 Rh7+= (16...Bd4? 17.c3 Bf2 18.Qf2+-)) 15...fe6 16.Be6 Qe6 (16...Kd8 17.Bc8 Kc8+-) 17.Qe6 Kd8 18.Be7 Ke8 19.Bf6 Kf8 20.Qe7 Kg8 21.Qg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 Bb6 6.Nf3 Ne7 7.ba6 Na6 8.Ba6 (8.Bb5 0-0=) 8...Ra6=+ 9.0-0 0-0 10.Re1 d6 11.Nbd2 Bg4 12.Bb2 Ba5 13.c3 Nd5 14.Qc2 Rc6 c3 seems the pivot of the position 15.Qe4 Nf6 16.Qd3 Rb6 17.Nc4 Rb5 18.a4 Rb3?? (better 18...Rh5=) 19.Na5+- Rb2 20.Nc4 Rb3 (20...Bf3 21.gf3 (21.Qf3?! Rb3=) 21...Rb3 22.Qc2+-) 21.Nfd2 b5 22.Nb3 bc4 23.Qc4 Be6 24.Re6 fe6 25.Qe6 Kh8 26.a5 Re8 27.Qc4 Qe7 28.a6 d5 29.Qd3 Ne4 30.a7 Qf8 (30...Ra8 31.Qb5 Qf8 32.Qd5 Nc3 33.Qc4+-) 31.Qb5 Qf2 (31...Ra8 32.Qd5 Nc3+-) 32.Kh1 Qf8 33.Qe8!! Qe8 (33...Qe8 34.a8Q Double attack (34.a8Q Decoy)) 34.a8Q Nd6 35.Qe8 Ne8 36.Ra8 Kg8 1-0. DEFFM – GuestFMRH, freechess.org, 2021.

5.ed4 Qe7 6.Be2 Bb6 7.ba6 Na6 8.Nf3 Nf6 9.0-0 0-0 10.Re1 Qd8 11.c4 d5 12.c5 Ba5 13.Bd2 Bd2 14.Qd2 c6 (14...Re8 15.Nc3=) 15.Bd3 Bg4 (15...b6 16.cb6 Qb6 17.Nc3+=) 16.Ne5+/- Bh5 17.Nc3 Nc7 18.Qb2 Qb8 19.Bf5 Bg6 20.Bg6 fg6 21.Rab1 Nb5 (better 21...Ne6!?+/-) 22.Nb5+- cb5 23.Qb5 Ra2 24.c6 (better 24.Qb7 Qc8 25.Qc8 Rc8 26.Rb7+-) 24...Ne4?? (better 24...b6+-) 25.Qd5 Kh8 26.Re4 Rff2 27.Ng6! (27.Ng6 hg6 28.Rh4) 1-0. DEFFM – GuestXGPP, freechess.org, 2020.

5.ed4 Qe7 6.Be2 Bb6 7.Nf3 ab5 8.0-0 c6 9.Re1 d5 10.Ng5 (better 10.Bb5 Be6 11.Bd3+=) 10...h6? (better 10...Qf6 11.Bh5 Kf8 12.Nf7 A) 12...Qd4 13.Qf3 Bd7 14.Nh8 Nf6 15.c3 Qf2 16.Qf2 Bf2 17.Kf2 Nh5 18.Ba3 c5 19.Bc5 Kg8 20.Re7 Kh8 21.Nd2+-; B) 12...Bd4?! 13.Ba3 Ra3 B1) 14.Nh8? Bf2 (14...Qf2 15.Kh1 Nf6 16.Na3 Ba1 17.Qa1+/-) 15.Kh1 Re3 (15...Be1 16.Qe1 g6 17.Na3-/+) 16.Re3 Be3-+; B2) 14.Na3=; C) 12...g6 13.Nh8 gh5=) 11.Bh5+- hg5 12.Bg5 Be6? (better 12...Nf6 13.Re7 Ke7+-) 13.Be7 Ne7 (13...Ke7 14.Bg4 Nf6 15.Be6 fe6 16.Qd3+-) 14.Re6 g6 15.Bg6! fg6 16.Qg4 Kf7 (16...Kd8 17.Nd2 Ba5 18.Qg5+-) 17.Nd2 Na6 (17...Bc7 18.Nf3 Nd7+-) 18.Rae1 Rae8 19.Qg5 Bd8 (19...Ba7 20.Rf6 Kg8 21.Rg6 Ng6 22.Qg6 Kf8 23.Re8) 20.Rf6 Kg7 (20...Kg8 21.Rg6 Ng6 22.Qg6 Kf8 23.Re8) 21.Re7! Be7 (21...Be7 22.Qg6 Mate attack; 21...Re7 22.Qg6 Mate attack) 22.Qg6 1-0. DEFFM – MakaKing, freechess.org, 2021.

5.ed4 Qf6=.

4.d4 ed4!? 5.ed4 Bb4 6.Bd2 Bd2 7.Qd2 a6=.

4.d4 ed4 5.ed4 Bd6 6.Bd3 Bb7 7.Nf3 Qe7 (7...Nf6 8.Qe2 Qe7 9.Qe7 Be7 10.0-0+=) 8.Be3+- Nf6 9.0-0 Bf3? (better 9...0-0+-) 10.Qf3+- (10.gf3?! Nh5 11.f4 Qh4= (11...Nf4?? 12.Bf4 0-0 13.Re1+-)) 10...Bh2?? (10...c6 11.Re1 0-0+-) 11.Kh2 Qb4 (11...c6+-) 12.Qa8 c6 (12...0-0 13.Qf3 c6+-) 13.Qb8 Ke7 14.Qh8 Qb2 15.Re1 Qa1 (15...Qa2 16.Ra2 Ng4 17.Kh3 Ke6 18.Qe8 Kf6 19.Qd8 Ke6 20.Bf4 Ne3 21.Re3 Kd5 22.Qd7) 16.Bg5 Kd6 17.Qb8 Kd5 18.Qe5 1–0. GuestNDSG – GuestJHXR, freechess.org, 2020.

4.d4 ed4 5.ed4 Qe7 6.Be2 (6.Be3 Bd6+=) 6...Bd6 (6...Bb7!? 7.Kf1 Bd6=) 7.Nf3 Bb7 8.0-0 Nf6 9.Re1 Ng4?? (better 9...0-0+=) 10.Bd3+- Bf3 (10...Ne5 11.Ne5 0-0+-) 11.Re7 Be7 12.Qf3 Nf6 (12...c6 13.Qg4 g6 14.Bf4+-) 13.Qa8 0-0 14.Qa7 c6 15.Bf4 d6 16.Qe7 Nd5 17.Bh7! Kh7 Deflection from f8 18.Qf8 Nf4 19.Qb8 Ne2 20.Kf1 Nd4 21.Qb6 Nc2 22.bc6 Na1 23.c7 (23.c7 g5 24.c8Q Kg7 25.Qd4 f6 26.Qd7 Kg6 27.Qe4 f5 28.Qef5 Kh5 29.Qdh7) 1-0. GuestDTRL – MJLMK, freechess.org, 2020.

4.d4 Be7? 5.de5+- d5 (5...Nh6 6.Qf3 c6 7.Nc3+-) 6.Nf3 (6.Nc3 Be6+-) 6...Bg4 (6...Nh6 7.Nc3 Bb7 8.Bd3+-) 7.h3 (7.Nc3 Bb4 8.Bb2 Ne7+-) 7...Bh5 (7...Be6 8.Bd3+-) 8.Be2 (8.Nc3 Bb4 9.Qd4 Bc3 10.Qc3 Ne7+-) 8...f6 (8...Bc5 9.0-0+-) 9.g4 (better 9.e6!? Bc5 10.0-0 Ne7+-) 9...Bf7 10.0-0 (better 10.Bb2 Nd7 11.e6 Be6+-) 10...Be6 (10...a6 11.ba6 Na6 12.Bb5 Kf8+-) 11.Nd4 Qd7 (11...Bc8 12.f4 Bc5+-) 12.Bf3 g5 (12...h5 13.Ne6 Qe6 14.Bb2+- (worse 14.Qd5 Qd5 15.Bd5 c6 16.bc6 Na6+-)) 13.Ne6 (better 13.Bb2 fe5 14.Ne6 Nf6 15.Nc7 Qc7 16.Bd5 Qd7 17.Ba8 Qb5+-) 13...Qe6 14.Bd5 (14.Bb2!? Qd7 15.Nc3 c6 16.Nd5 cd5 17.Qd5 Qd5 18.Bd5 Nd7 19.Ba8 Ne5+-) 14...Qe5 15.c3 (15.Ba8?! Qa1 16.Bd2 Qe5+-) 15...Nd7 (15...c6 16.bc6 Na6+-) 16.f4 gf4 (16...Qd6 17.Ba8 Qd1 18.Rd1+-) 17.ef4 Qd6 (17...Bc5 18.Kg2 Qd6 19.Ba8 Qd1 20.Rd1+-) 18.Ba8 Qc5 (18...Qd1 19.Rd1 h5 20.Bc6+-) 19.Kg2 Nh6 (19...Qb5 20.a4 Qa6+-) 20.Bc6 0-0 21.Qd7 (better 21.Ba3 Qe3 22.Re1 Qf4 23.Re7 Ng4 24.Qg4 Qg4 25.hg4 Ne5 26.Bd5 Rf7 27.Bf7 Nf7+-) 21...Rd8 22.Qe6 Nf7 23.Ba3 Rd6 24.Qe7 Qc4 25.Bd6 Qe2 26.Qe2 (26.Qe2 Ne5 27.fe5 h5 28.ef6 hg4 29.Qg4 Kf7 30.Re1 cd6 31.Qg7) 1–0. GuestTCRW – GuestHCTQ, freechess.org, 2020.

4.a4 a5 5.Bb2 f6 (5...d6 6.Na3=) 6.d4 e4 (6...ed4 7.Bd4 Bd4 8.Qd4+/-) 7.Bc4 d5 (better 7...f5!?+/-) 8.Qh5+- g6 9.Qd5 Qd5 10.Bd5 f5 11.Nh3 Ne7 12.Bc4 c6 (12...Nd7 13.Nc3+-) 13.0-0 cb5 14.ab5 Nd7 (14...Bc7 15.d5 Rf8 16.Ng5+-) 15.d5 Bc5 (15...Rf8 16.d6 Ng8+-) 16.Bh8 (16.Bh8 Nb6 17.Ba2 Ned5 18.Nc3 Nc3 19.Bc3+-) 1-0. DEFFM – rbpl, freechess.org, 2021.

4.a4 a5 5.Nc3 Nf6=.

4.a4 a5 5.Nf3 d6 (5...e4 6.Nd4 Nf6 7.Be2=) 6.d4 ed4 7.ed4 Bg4 8.h3 (8.Nc3 Nf6+=) 8...Bh5 (8...Bf3!? 9.gf3 Ne7=) 9.g4 Bg6 10.Bg5 (10.Nc3 Nf6+=) 10...Ne7 (10...Nf6 11.Qe2 Kd7 12.Nc3+=) 11.Bd3 (11.Nc3 f6 12.Bf4 0-0+=) 11...Qd7 (11...f6 12.Be3+=) 12.0-0 0-0 (12...f6 13.Bh4+=) 13.Be7 Qe7 14.Re1 (14.Nc3 c6+=) 14...Qf6 15.Nc3 Bd4? (better 15...c6 16.g5 Qd8+=) 16.Nd5+- Ba1 17.Nf6 Bf6 18.Bg6 (better 18.g5 Bd8 19.Bg6 hg6 20.Qd5+-) 18...fg6 (18...hg6 19.g5 Bd8+-) 19.Qd5 Kh8 20.Qb7 Nd7 21.Qc7 Ne5 (21...Rfd8 22.g5 Rac8 23.Qd6+-) 22.Ne5 Be5 23.b6 Rab8 (23...Bd4 24.Re6 Rac8 25.Qd6+-) 24.b7 h6 (24...Bd4 25.Re2 d5 26.Rd2+-) 25.Rb1 (25.Rd1 Kh7+-) 25...Bd4 26.Qd6 Bf2 27.Kh1 Ba7 (27...Kh7+-) 28.Qf8 (better 28.Qg6 Rf6 29.Qh5+-) 28...Rf8= 29.c4 (29.Rb5 Rb8=) 29...Rb8 (29...Bb8 30.Rb5 Rf3 31.Kg2=) 30.Rb5 Bd4 (30...Kg8 31.c5 Bc5 32.Rc5 Rb7 33.Ra5=) 31.c5 (better 31.Kg2+=) 31...Be5?? (better 31...Bc5 32.Rc5 Rb7 33.Ra5 Rb1 34.Kg2 Rb2 35.Kf3 Rb3 36.Kg2 Rb2 37.Kg3 Rb3 38.Kg2 Rb2=) 32.c6+- Bc7 33.Rd5 Kh7 (33...g5 34.Rd7 Bf4 35.Kg2+-) 34.Rd7 Bf4 (34...Bb6 35.h4+-) 35.c7 Bc7 36.Rc7 g5 37.Kg2 Kg6 38.Kf3 Kf6 39.Ke4 g6 (39...Ke6+-) 40.Kd5 h5 41.Kc6 hg4 (41...Ke5 42.Rc8 Rb7 43.Kb7+-) 42.hg4 Re8 (42...Ke5+-) 43.Rc8 Re6 44.Kd5 Rb6 (44...Re5 45.Kd4 Re3 46.Ke3 Kf7 47.b8Q Ke7 48.Qe5 Kf7 49.Rc7 Kf8 50.Qh8) 45.Rc6 (45.Rc6 Rc6 46.b8Q Rc8 47.Qc8 Kf7 48.Qd7 Kf6 49.Qe8 Kg7 50.Ke6 Kh7 51.Kf6 Kh6 52.Qg6) 1–0. GuestTRFZ – GMAKA, freechess.org, 2020.

4.a4 d6?? 5.a5+- Bc5 6.d4 ed4 7.ed4 Qe7 (7...Qf6 8.c3 Nd7 9.Nf3+-) 8.Be2 Qf6 (8...Nd7 9.dc5 Nc5 10.Nf3+-) 9.c3 (9.Nf3 h6 10.Ra4 Nd7+-) 9...Nd7 10.Nf3 h6 (10...Qd8 11.0-0 Ngf6 12.Nbd2+-) 11.0-0 (11.Nbd2 Ne7 12.0-0 0-0+-) 11...a6 (11...Ne7 12.Re1 a6 13.dc5 Nc5 14.ba6 ba6 15.Qd4+-) 12.dc5 Nc5 13.Be3 Ne4 (13...Ne7+-) 14.Bd4 (14.ba6 Qg6 15.Nh4 Qe6+-) 14...Qg6 15.Nh4 (better 15.ba6 ba6 16.Nh4 Qg5+-) 15...Qg5 16.Nf3 Qg6 17.ba6 ba6 18.Re1 Bb7 (18...Ne7 19.Nbd2 Nd2 20.Nd2+-) 19.Bd3 d5 (19...f5 20.Nbd2 Ne7 21.Nh4+-) 20.Ne5 Qg5 (20...Qd6 21.Qa4 c6 22.Be4+-) 21.Qa4 Kf8 (21...c6 22.Nc6 Rc8 23.Na7 Kf8 24.Nc8 Bc8 25.f3+-) 22.Qb4 Ne7 23.Qb7 Rc8 24.Be4 de4 25.Bc5 Qe5 26.Qc8 1–0. GuestTRFZ – GMAKA, freechess.org, 2020.

4.Bb2 d6 5.a4 a6 6.Nf3 Bg4 (better 6...ab5!? 7.Bb5 c6=) 7.a5 Ba7 8.ba6 (8.h3!? Bd7 9.c4+-) 8...Na6= 9.h3 Bf3? (better 9...Bd7!?=) 10.Qf3+- (10.gf3?! Nf6=) 10...Nc5 11.d4 (11.Bb5 Kf8 12.Nc3+-) 11...e4? (better 11...ed4 12.a6 ba6 13.Bd4 Nf6 14.Bf6 gf6+-) 12.Qg3+- Qf6? (12...Nd7 13.a6 ba6 14.Qg7 Qf6+-) 13.Nc3 (13.dc5 Qb2 14.Ra4 Qb1 15.Kd2 Bc5 16.Qg7 Bb4 17.Rb4 Qb4 18.Qc3 Qc3 19.Kc3 Ra5-+) 13...Nh6 (13...Ne7 14.dc5 Bc5+-) 14.Nd5 Qe6 (14...Qg6 15.Nc7 Ke7 16.Qg6 hg6 17.Na8 Ra8 18.dc5 Bc5+-) 15.Nc7 (15.Nc7 Ke7 16.Ne6 Ne6 17.d5+-) 1–0. DEFFM – GuestFKRB, freechess.org, 2019.

4.Nf3 d6 5.a4 Nf6?? (better 5...a6=) 6.a5+- Bc5 7.d4 ed4 (7...e4 8.Nfd2 (8.dc5?! ef3 9.cd6 Qd6+-) 8...Bb4 9.c3 Ba5 10.Ra5+-) 8.ed4 Bb4 9.c3 Ba5 10.Ra5 c5 (10...0-0 11.Be2+-) 11.Ra1 0-0 12.Be2 Bd7 (12...Bf5 13.0-0+-) 13.0-0 b6 (13...Bf5 14.c4+-) 14.Bd3 (14.c4 Re8+-) 14...d5 (14...Re8 15.Bf4+-) 15.Ne5 c4 16.Bc4! dc4 17.Qf3 Qc7 (17...Na6 18.ba6 (worse 18.Ra6 Bb5 19.Ra1 Qd5+-) 18...Be6 19.Ba3+-) 18.Qa8 (better 18.Bf4 Na6 19.ba6+- (worse 19.Ra6 Bb5 20.Ra2 Rfc8+-)) 18...Bb5 (18...Nc6 19.Qf8! Kf8 20.Nd7 Qd7 21.bc6 Qc6 22.Ra7 Nd5+-) 19.Ra7 Qd6 (19...Qc8+-) 20.Ba3 Qd8 21.Bf8 Qf8 22.Rf7 Qd8 23.Rb7 Bc6 24.Rb8 Ba8 (24...Qe8 25.Nc6 Qc8 26.Rc8 Kf7 27.Ne5 Ke7 28.Qb7 Ke6 29.g4 Nd7 30.Qd7 Kf6 31.f4 b5 32.Rf8) 25.Rd8 Ne8 26.Re8 1–0. GuestZYMW – NdocMAKA, freechess.org, 2020.

4.Nf3 e4 5.Nd4 Nf6 6.a4=.

4.a4 Qa5 5.Bb2 cb5? (better 5...d6+=) 6.Be5+- f6 (6...Nf6 7.ab5 Qd8 8.Nc3+-) 7.ab5 Qb4?! (7...Qd8 8.Bb8 d6+-) 8.Bc3 Qh4 9.Nf3 Qh5 10.Be2 (10.d4 Bb6 11.Be2 d5+-) 10...Qg6 (10...d5 11.Ne5 Qh4 12.g3+-) 11.d4 Qg2 (11...Be7+-) 12.Rg1 (12.dc5?! Qh1 13.Bf1 Ne7+-) 12...Qh3 (12...Qg1 13.Ng1 Bd6 14.Nd2+-) 13.dc5 b6 (13...a6+-) 14.Qd5 1–0. GuestNKJM – GuestDVCN, freechess.org, 2020.

4.a4 cb5 5.ab5 d6 6.d4+= ed4 7.ed4 Bb6 8.Nf3 Nf6 9.Be2 0-0 10.0-0 h6 11.c4 Bg4 12.Nbd2 (12.h3 Bh5+/-) 12...Nbd7 13.Bb2 Rc8 (13...Bf5 14.Re1+=) 14.Nh4 Be2 15.Qe2 Re8 16.Qd3 Ng4? (better 16...g6 17.Rfe1 Re1 18.Re1 Qf8+=) 17.Nf5+- Ndf6? (better 17...Re6 18.Ba3 Bc7+-) 18.h3 Qd7 (18...g6 19.Ng3+- (19.hg4?! gf5 20.Qf5 Nh7+-)) 19.hg4 Ng4 20.Ba3 Bd4 (20...Bc7 21.Qf3 Nf6+-) 21.Nd4 1-0. DEFFM – GuestBQVN, freechess.org, 2021.

4.a4 Qf6 5.Bb2 d6 6.f4 Qh4 7.g3 Qe7 8.Nf3 ef4?? (better 8...f6=) 9.Bg7+- (9.gf4?! Nf6=) 9...fe3 10.Qe2 Bg4 (10...Bf5 11.d4 Bb4 12.c3+-) 11.Bh8 f6 (11...Nf6 12.Bg2+-) 12.h3 Bf3 13.Qf3 ed2 (13...d5 14.de3 Be3 15.Rh2+-) 14.Kd2 Nd7 15.bc6 Ne5 (15...bc6 16.Qc6 Qe3 17.Kd1 Qd4 18.Bd3+-) 16.Qb3 0-0-0 17.Qb7 Qb7 18.cb7 Kb7 19.Nc3 Nf3 (19...d5 20.Rb1 Kc6 21.Bb5 Kd6 22.Rhf1+-) 20.Kd1 Kc8 21.Rb1 Bd4 (21...Ne5 22.Ba6 Kd7 23.Rb7 Ke6 24.Rh7+-) 22.Ba6 Kd7 23.Rb7 Kc6 24.Nb5 Bb6 (24...Bc5 25.Ke2 Ng5 26.Rb1 Re8 27.Kf1+-) 25.a5 Ba5 (25...Bc5 26.Rc7 Kd5 27.Na7 Ba7 28.Ra7+-) 26.Rf1 Ne5 (26...Kc5 27.Rf3 Re8+-) 27.Nd4 Kc5 (27...Kd5 28.Rb5 Kc4 29.Rf4 Ng6 30.Ra5 Kb4 31.Nc6 Kc3 32.Rf3 Kb2 33.Rb3) 28.Rb5 Kd4 (28...Kc4 29.Rf4 Ng6 30.Ra5 Kb4 31.Nc6 Kc3 32.Rf3 Kb2 33.Rb3) 29.Rf4 Kc3 (29...Ke3 30.Rb3 Bc3 31.Rc3 Nd3 32.Rd3) 30.Rb3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 d6 (--> 3.Bb2 d6 4.e3 c6).

4.d4 ed4 5.ed4 Bb4 6.c3 (6.Bd2 Bd2 7.Nd2 Ne7=) 6...Ba5 (6...Be7 7.Qg4 Bf6 8.Bd3=) 7.Bd3 (7.Qg4 Qe7 8.Kd1 Qf6+=) 7...cb5 8.Ne2 (8.Bb5 Ne7+=) 8...b4= 9.0-0 Nf6 10.Qb3 (10.Bg5 Nc6=) 10...bc3 (10...Nc6 11.Bg5=+) 11.Bf4 (11.Nbc3 0-0=) 11...Nc6 12.Bd6 (12.Nbc3 d5=) 12...Bc7 (12...Qb6 13.Qb6 Bb6 14.Nbc3 Bd4 15.Nd4 Nd4 16.Rfe1 Ne6 17.f4+=) 13.Ba3 (13.Bc7 Qc7 14.Nbc3 0-0=+) 13...d6 14.Nbc3 0-0 15.Rac1 White prepares the advance d5 15...Re8 16.d5 Ne5 17.Nb5 Bb8 18.Bb1 a6 19.Nbd4 b5 (19...Ba7 20.Rfe1–/+) 20.Ng3 Bd7 21.Ngf5 (21.Nc6 Bc6 22.dc6–/+) 21...Ba7 (21...Nc4 22.Rfe1 Re1 23.Re1 Nd5=) 22.Bd6= Bd4 (better 22...Bf5!? 23.Nf5 g6=) 23.Bc7+- (worse 23.Nd4 Nc4 24.Bb4 Nd5–/+) 23...Qc8 (better 23...Bf2!? 24.Rf2 Rc8+-) 24.Nd6+- (24.Nd4 Nc4 25.Bg3 Qc5–/+) 24...Qc7 (24...Nc4 25.Nc8 Rac8 26.Qg3+-) 25.Rc7 Red8 26.Rd1 Bb6 27.Rb7 Bc5 28.Ne4 Be7? (28...Ne4 29.Be4 Bd6+-) 29.d6 Bf8 30.Nf6 gf6 31.f4 Nc6 (31...Nc4 32.Rd7! Rd7+-) 32.Bh7! Kh7 33.Qf7 Kh6 (33...Kh8 34.Rd3 Bh6 35.Rh3 Bh3 36.Qh7) 34.Rd3 Ne7 (34...Be7 35.Rd7 f5 36.Rh3 Bh4 37.Rh4) 35.Rd7 Rd7 36.Rh3 1–0. GuestNVBF – GuestMDQG, freechess.org, 2020.

4.d4 ed4 5.ed4 Bb6 6.a4 (6.Nf3 Nf6 7.Qe2 Kf8=) 6...cb5 (6...a6 7.Ba3=) 7.ab5 a6 (7...d5 8.Nf3 Nf6 9.Bd3+=) 8.Qg4 (8.Nf3 Nf6+=) 8...Qf6 (8...Nf6!? 9.Qe2 Kf8=) 9.Nf3+= Nh6 (9...Ne7 10.Nc3 d5 11.Qf4+=) 10.Qe4+- Kd8? (better 10...Qe6 11.Qe6 fe6+-) 11.Bg5+- Re8?? (11...Qg5 12.Ng5 Re8 13.Qe8 Ke8+-) 12.Bf6 gf6 13.Ne5! fe5 (13...d6 14.ba6 Na6 15.Bb5+-) 14.Qh4 Kc7 15.Qh6 (15.Qh6 ed4 16.Kd1+-) 1–0. GuestNBFV – guestgon, freechess.org, 2020.

4.d4 ed4 5.ed4 Bd6 6.a4 (6.Nf3!? Nf6 7.Bd3=) 6...a6 (6...Nf6 7.Nf3 0-0 8.Be2=) 7.Bb2 (7.Ba3 Ba3 8.Na3 d5=+) 7...Ne7 (7...Nf6 8.Nf3=+) 8.Bd3= g6 (better 8...ab5!? 9.ab5 Ra1 10.Ba1 Ng6+=) 9.Nf3 0-0 10.0-0 (better 10.Nc3+=) 10...cb5 (better 10...ab5!? 11.ab5 Ra1 12.Ba1 Bc7+=) 11.ab5+- Bf4 (11...Bc7 12.Re1+-) 12.d5 (better 12.c4+-) 12...Nd5?? (better 12...d6+-) 13.Bc4 Nb6 (13...Nf6 14.Qd4 Bh6 15.Qf6 Qf6 16.Bf6 d6+-) 14.Qd4 (14.Qd4 Bh2 15.Nh2 Qf6 16.Qf6 Nc4 17.Qg7) 1–0. GuestTKZT – GuestPPFD, freechess.org, 2020.

4.d4 ed4 5.ed4 Qe7 6.Be2+= Bb6 7.a4 a6 8.Ra3 ab5?? (better 8...d5+=) 9.Re3+- (9.Re3 Qe3 10.Be3 ba4 11.Na3+-; 9.ab5?! Ra3 10.Ba3 Ba5 11.Kf1 d6=) 1-0. onur604 (2320) - cebulowykrol (2160), Casual Rapid game, 2021.

4.d4 ed4 5.ed4 Be7 6.Nf3=.

4.Qh5 d6=+ 5.bc6 (5.Bb2 Nf6 6.Qg5 0-0=+) 5...bc6 (5...Nc6 6.Bc4 Nh6 7.Nf3=+) 6.Bc4 (6.Ba3 Ba3 7.Na3 Nf6=+) 6...g6 (6...Nh6 7.h3=+) 7.Qf3 (7.Qd1 d5 8.Be2 Qg5=) 7...d5 8.Bb3 (8...e4 9.Qg3–/+; 8.Be2 Bf5 9.Qg3 Nd7=+). manofsteel2 – crackerking, Live Game Caissa's Web, 2005.

(--> 1.b4 e5 2.b5 d5 3.e3 Bc5).

4.Bb2 d4 (--> 1.b4 e5 2.b5 d5 3.Bb2 d4 4.e3 Bc5).

4.Bb2 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Bc5).

4.a4 a6 5.c4 (5.d4 ed4 6.ed4 Qf6=) 5...Nf6 6.Bb2 (6.d4 ed4 7.ed4 Qe7 8.Be2 Bb4 9.Bd2 Bd2 10.Nd2 ab5 11.ab5 Ra1 12.Qa1 0-0=+) 6...0-0–/+ 7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 Qe7 11.Be2 Re8 (11...Bg4 12.h3 Bf5 13.Nf3=+) 12.Nf3= Ne4 13.Nd5 Qd8 14.0-0 c6 15.Nf4?? (15.Ne3 ab5 16.ab5 Ra1 17.Qa1 cb5 18.cb5 Qf6=) 15...Nc3?? (better is 15...g5-+) 16.Qb3?? (better is 16.Qd3 Qa5 17.Ng5=) 16...Ne2-+ (< 16...Re2 17.Qc3 Re4 18.Nd3=) 17.Ne2 Re2 18.d5 (18.Rfe1 Re1 19.Re1 ab5 20.ab5 Bd7 21.bc6 bc6-+) 18...c5 (18...ab5 19.Qd3 Qe7 20.Nd4-+) 19.b6 Re8 (19...Nd7 20.Rfe1 Re7 21.Re7 Qe7 22.Re1-+) 20.a5 Bf5 21.h3 (21.Rae1 Nd7-+) 21...h6 (21...Qf6 22.Rae1 Nd7 23.Re3-+) 22.g4 (22.Rae1 Nd7-+) 22...Be4 23.Rae1 Bf3 (23...Nd7 24.Nd2 Bg6 25.Re8 Qe8 26.Qe3-+) 24.Qf3 Nd7 25.Qf4 Qf6 (25...Ne5 26.Re3-+) 26.Qg3 (26.Qf6 Nf6 27.Kg2 Re4 28.Re4 Ne4-+) 26...Ne5 27.f4 (27.Rc1-+) 27...Nc4 28.g5 hg5 29.fg5 Qg6 (29...Qd4 30.Kh2-+) 30.Rc1 (30.h4 Re1 31.Qe1 Qd3-+) 30...Nd2 (30...Na5 31.Rf3 Qe4 32.Ra3-+) 31.Rfd1 (31.Rf4 Nb3! 32.Rcf1 Nd4 33.Rd4 cd4-+) 31...Ne4 32.Qg2 Qg5 33.Rc4 (33.Qg5 Ng5 34.Rd3 Rac8-+) 33...Qg2 (33...Qe3 34.Kh2-+) 34.Kg2 Nf6 35.Rf1 (35.Kf3 Re5-+) 35...Re2 36.Kf3 Ra2 37.h4 Nd5 38.Rd1 Ra3 39.Kg4 Ne3 40.Kg5 Nc4 41.Kf5 Re8 42.h5 Re5 43.Kf4 Rh5 44.Ke4 Rh4 45.Kd5 Ne3 46.Kd6-+ Nd1 47.Kc7 Re4 48.Kb7 Ra5 49.Kc6 Re6 50.Kb7 Rb5 51.Ka6 Rb1 52.Kb7-+ c4 53.Kc7 Reb6 54.Kd7 Rb8 55.Kc6 0–1. MasterofDisaster – TroubledMind, Live Game Caissa's Web, 2004.

4.a4 Nf6 5.d4 ed4 6.ed4 Qe7 7.Be2 Bb4 8.c3=.

4.Nc3 a6 5.Ne4 (5.Bb2 Nf6=+) 5...Ba7 (5...Bb6 6.Bb2=+) 6.Qh5 (6.Bb2 f5 7.Ng3 Nf6=) 6...Nf6 7.Nf6 (7...Qf6 8.Qf3=+). solidsteelpipe – rewq, Live Game Caissa's Web, 2005.

4.d4 Bb6 5.de5+= Nd7 6.Nf3 de5 7.Nbd2=.

4.d4 Bb6 5.de5 de5 6.Qd8 Kd8 7.Bb2 f6 8.a4 a6 9.Na3 Bf5 10.0-0-0 (10.Ne2 ab5 11.ab5 Nd7=) 10...Ke8 11.Nf3 Ne7 (11...ab5 12.ab5 Bc5 13.Nc4=+) 12.Nc4= Bc5 13.Na5 b6 (better 13...Bc8!?=+) 14.Nb7+= ab5?? (better 14...Nd7 15.ba6 Ng6+/-) 15.Rd8+- Kf7 16.Rh8 (16.Nc5?? Rd8 17.Nb7 Rh8 18.Bb5 Ra7-+) 16...ba4 17.Bc4 Kg6 18.Nh4 Kg5 19.Nf5 Kf5 20.Rh7 a3 21.Bd3 (21.Nc5?! ab2 22.Kb2 Kg6 23.Bd3 f5+-) 21...Ke6 22.Ba1 Nbc6 (22...Bd6 23.Rg7 Nbc6 24.h4+-) 23.Nc5 bc5 24.Rg7 (better 24.Bc4 Kd7+-) 24...Nb4 (24...Ra4 25.h4 c4 26.Rg4+-) 25.Bc4 Kd6 (25...Nbd5 26.Re7! Ke7 27.Bd5+-) 26.Rd1 Kc6 (26...Nbd5 27.e4 c6 28.ed5 cd5 29.f4+-) 27.c3 (better 27.Re7 Rh8+-) 27...Nbd5 28.e4 (28.Be2 Kd6+-) 28...Nb6 29.Ba2 (29.Ba2 Re8 30.Rf7+-) 1-0. DEFFM – GuestTGMS, freechess.org, 2021.

5.ed4 Bb4 6.c3 Ba5 7.Bd3 d5 8.Nf3+= h6 9.0-0 Be6 10.Re1 Nf6 11.Ba3 a6 (better 11...Kd7+/-) 12.Re6!+- fe6 13.Ne5 Nbd7?? (13...Qc8 14.Qa4 b6 15.ba6 c6+-) 14.Bg6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 Bb4 6.c3 Ba5 7.Bd3 Qe7 8.Ne2+= Nf6 9.0-0 Bg4 (9...0-0 10.Qa4 b6 11.Re1+=) 10.Re1+/- 0-0 11.h3 Bh5 12.Bg5 h6 13.Bd2 Bg6 (13...Qd8!?+/-) 14.Nf4 Bd3?? (better 14...Qd7 15.Bg6 fg6 16.Ng6 Re8+/-) 15.Re7+- (15.Nd3?! Qd7 16.c4 Bb6+=) 15...Bb5 16.Nh5 Nc6 (16...Nbd7 17.c4 Bd2 18.Nd2 Nh5 19.Qh5 Bc6+-) 17.Nf6 gf6 18.Qg4 Kh8 19.Bh6 Rg8 20.Qh5 Ne7 21.Bf8 1-0. DEFFM – GuestGHMP, freechess.org, 2020.

5.ed4 Qe7 6.Be2 Bb6 7.Nf3 Bd7 8.0-0 Nf6 9.Ng5 (9.Re1 0-0+=) 9...0-0 (9...Bd4 10.c3 Bc5 11.Bf3=) 10.Bf3 c6 (worse 10...Bb5 A) worse 11.Bb7 Bf1 12.Qf1 Nbd7 (worse 12...Bd4 13.c3+-) 13.Ba8 Ra8=+; B) 11.Re1 Qd7 12.Bb7+-) 11.Re1 Qd8 12.a4 (12.Nc3 Re8 (worse 12...cb5 13.Bb7 Qc7 14.Ba8 Qc3 15.Be3+-) 13.Re8 Qe8 14.bc6 bc6+=) 12...d5 (12...cb5? 13.Bb7 Nc6 14.Ba8 Qa8 15.ab5+-) 13.Be2 Ne4 (13...a6 14.Ra3=) 14.Ne4 de4 15.Bc4 cb5 (15...Bg4 16.Qd2=) 16.ab5+= Bf5 17.c3 a6 (17...Bc7 18.Nd2+=) 18.Nd2 (18.Qb3 Ra7 19.Bd5 Nd7+-) 18...Re8 (18...Bc7 19.ba6 Na6 20.g3+-) 19.Qb3 Qd7 (better 19...Qc7!?+-) 20.ba6+- Bd8?? (20...Bc7 21.Bb5 Nc6+-) 21.Bb5 Nc6 22.ab7 Qb7 (22...Ra1 23.Bc6 Qc6 24.b8Q+-) 23.Ra8 Qa8 24.Qd5 Re6 25.Qf5 Qa5 (25...Ne7 26.Qc5 Bb6 27.Qc4+-) 26.Qd5 Ne7 27.Qd7 Nf5 (27...Ng6 28.Ne4 Nf8 29.Qd5+-) 28.Ne4 (better 28.Nb3!? Qb6 29.Bc4 Qd6 30.Be6 fe6 31.Qe8 Qf8 32.Qe6 Qf7 33.Qe4 Be7+-) 28...Re7 (28...g6+-) 29.Qf5 (29.Qf5 h5 30.Qd5+-) 1–0. onur604 (2285) – kulje (2090), lichess.org, 2020.

5.ed4 Qe7 6.Be2 Bb6 7.Nf3 Nf6 8.Bb2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 0-0 12.0-0 Re8 13.Bd3 d5 14.Re1 Be6 15.Ng5 Qd6 16.Bb2 Qb4 17.Bc3 Qa4 18.Qf3 Bd7 19.Bh7 Kf8 20.Re8 Be8 21.Qh3 (21.Bf5!?+=) 21...Nh7= 22.Qh7 Bd4 23.Qd3 Bb6 24.Nh7 (24.Qd5?? Qc2 (24...Qb5?! 25.Qb5 Bb5 26.Bb2=+) 25.h4 Qf2 26.Kh2 Qg1 27.Kg3 Qb1-+) 24...Kg8 25.Nf6 (better 25.Qg3!? d4 26.Nf6 Kf8 27.Ne8 Ke8 28.Qe5 Kf8 29.Qd5=) 25...gf6-/+ 26.Qg3 Kf8 27.Bf6 Bb5 28.Qg7 Ke8 29.Qg8 Kd7 30.Qf7 Kc8 31.Qd5 Bd7 32.Qg8 Be8 33.Nd2 Bc5 34.h4 b6 35.Be5 Kb7 36.Nb3 Ba3 (36...Be7 37.Nd4-/+) 37.Qd5 (37.Qg3 Na6-/+) 37...Nc6-+ 38.f4 Kb8 (38...Be7 39.g3-+) 39.g3 Ne5 (39...Kc8 40.h5 Ne7 41.Qg2-/+) 40.Qe5 Bd6 41.Qe6 Bc6 42.Kf2 Kb7 43.Qe2 Kb8 44.h5 (better 44.Qe6=) 44...Bb7-+ 45.Ke1 Bb4 46.Kd1 Bc3 47.h6 (47.Kc1 Qa3 48.Kd1 Qa8 49.Qe8 Bc8-+) 47...Qc6 48.Qf1 Ba6 49.Qg1 Bc4 50.h7 Qd6 51.Kc1 Qa3 52.Kd1 Bb3 53.Qe3 Qa1 (53...Qa1 54.Qc1 Qc1 55.Kc1 Be6-+) 0-1. DEFFM – GuestTJGB, freechess.org, 2021.

5.ed4 Qe7 6.Be2 Bb6 7.Nf3 Bg4 8.0-0 Nd7 (8...Nf6 9.h3 Be6 10.Re1+-) 9.a4 (better 9.Re1 Be6 10.d5+-) 9...Ngf6? (better 9...Ba5 10.h3 Be6+-) 10.a5+- 0-0 11.ab6 ab6 12.Ra8 Ra8 13.Nbd2 (13.Re1 d5+-) 13...Ra1 (13...d5 14.Bd3+-) 14.Re1 Qd8 (14...d5 15.Bd3 Qb4 16.Qe2+-) 15.Nb3 Rb1 (15...Ra2+-) 16.Nfd2 Be2 (16...Rc1 17.Nc1 Bf5 18.Bd3+-) 17.Qe2 (17.Qe2 Rc1 18.Nc1+-) 1–0. GuestMZWZ – GuestRCHC, freechess.org, 2020.

5.ed4 Qf6 6.Nf3 Bg4 7.c3 Bb6 8.Be2 h6 9.a4 a5 10.0-0 Ne7 11.Re1 0-0 12.Nbd2 Nd5 (12...Re8 13.Nc4+=) 13.Ne4 White launches an attack 13...Qg6 (13...Qd8!?+=) 14.Nh4+/- Qe4 (14...Be2 15.Qe2 (worse 15.Ng6 Bd1 16.Nf8 Bc2=) 15...Qe6 16.Bd2+/-) 15.Bg4+- Qh7 (15...Nc3 16.Re4 Nd1 17.Bd1+-) 16.Bf5 g6 17.Ng6! fg6 Deflection from e6 (17...Qg6 18.Bg6) 18.Be6 A double attack 18...Qf7?? (18...Kh8 19.Bd5 c6+-) 19.Bf7 Rf7 20.Bh6 Nc3 (20...Kh7 21.Qb3 c6+-) 21.Qg4 Kh7 22.Re6 Nd7 23.Qg6 Kh8 24.Qf7 Rg8 (24...Ne2 25.Re2 Bd4 26.Re7 Nf8 27.Bg7 Kh7 28.Bd4 Kh6 29.Be3) 25.Bg7! Rg7 26.Rh6 A beautiful mate combination 26...Rh7 27.Rh7 (27.Qh7?!=) 1-0. DEFFM – MakaKing, freechess.org, 2020.

5.ed4 Qf6 6.Nf3 h6 7.Bb2 (7.dc5?! Qa1 8.Be3 dc5 (worse 8...Qa2 9.Nc3 Qe6 10.Nd5+/-) 9.Bc5 Qa2=+) 7...Bb4 (7...Ne7 8.Nc3 Bb4 9.Bd3+=) 8.c3+/- Ba5 9.Bd3 (9.Nbd2 d5+/-) 9...Bg4 (9...Qe7!? 10.Be2 Nf6+=) 10.Nbd2+- Ne7 11.Qc2 (11.0-0!?+-) 11...0-0+/- 12.0-0 Nd5 (better 12...a6!? 13.c4 d5+/-) 13.Be4+- c6 14.c4 Nf4 15.Nb3 Bc7? (better 15...Qd8 16.h3 Bf3 17.Bf3 Bc7+-) 16.d5+- Qd8 17.bc6 (17.Qd2 Nh5 18.dc6 bc6 19.bc6 Nf6+-) 17...bc6 18.dc6 Bf3 19.Bf3 (19.gf3?? Qg5 20.Kh1 Qg2) 19...Na6 20.g3 Nh3 (20...Qg5 21.Qe4 Nh3 22.Kg2+-) 21.Kg2 Ng5 22.Bd5 Nb4 (22...Nh7+-) 23.Qg6 (23.Qg6 Ne6 24.Be6+-) 1-0. DEFFM – GuestMLFR, freechess.org, 2021.

6.a4 Ba5 7.Nd2 (7.Bd2!? Bd2 8.Nd2+=) 7...Qe7=+ 8.Be2 (8.Qe2 Bc3 9.Ra3 Bd4=+) 8...Nf6 9.Ngf3 Bg4 (better 9...Nd5 10.Kf1 Nd7=+) 10.0-0+= 0-0 11.Bb2 Re8 12.Bd3 Bd2 (12...Nd5 13.h3 Be6 14.Be4+=) 13.Qd2+- Bf3 14.gf3 Nbd7 15.a5 (15.Rfe1 Qd8+-) 15...Nf8+= 16.Rfe1 (16.a6 b6+=) 16...Qd7 17.d5 Nd5? (better 17...Ng6 18.Bf6 gf6=) 18.Qg5+- Ne6? (18...f5 19.a6 Re1 20.Re1 h6+-) 19.Qd5 1–0. GuestNKRJ – Fishstar, freechess.org, 2020.

6.a4 a6 7.Ra3=.

6.a4 a6 7.Nf3 Nd7 8.Bb2 (8.ba6 Ba5 9.c3 b6+=) 8...Ngf6 9.Be2 h6 10.a5 Ba7 11.c4 ab5 12.cb5 0-0 13.Nc3 d5 14.0-0 Re8 15.Re1 b6? (better 15...Nf8!?+=) 16.a6+- Ne4 (16...Nb8+-) 17.Nd5 Ndf6 18.Nf6 Qf6 (18...Nf6 19.Bc4 Re1 20.Qe1+-) 19.Qc2 Qd6 (19...Nd6+-) 20.Bc4 Nf6 (20...Bf5 21.Ne5 Re5 22.de5 Qg6+-) 21.Re8 Ne8 22.Qe4 Be6 23.Qa8 Bc4 24.Qe8 Qf8 (24...Kh7 25.Qe4 g6 26.Qa8+-) 25.Qf8 Kf8 26.Ba3 Ke8 (26...Kg8 27.Rc1 Bb5 28.Rc7 Ba6 29.Ra7+-) 27.Rc1 Bd5 28.Rc7 Bb8 29.Rc8 Kd7 30.Rb8 f6 31.a7 Kc7 32.Bc5! bc5 33.dc5 Bf3 34.gf3 (34.gf3 Kd7 35.a8Q Ke6 36.Qe4 Kd7 37.Qc6 Ke7 38.Qe8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bc4 d5!? 7.Bb3 Nf6=+.

6.Bc4 Qf6 7.Nf3 Be6 (7...Qe7!? 8.Be2 Nf6+=) 8.Bg5+/- Qg6 9.Bd3 Qh5 10.0-0 h6 11.Bd2 Bg4 (better 11...Ne7!?+/-) 12.Re1+- Ne7 (12...Kf8 13.Be4 c6 14.h3+-) 13.Qe2 0-0? (13...Be6 14.Nc3 0-0+-) 14.Qe7 Bf3 15.gf3 Bd4 16.Qe4 Ba1 (16...Qg6 17.Qg6 fg6+-) 17.Qh7 1-0. DEFFM – GuestPVNP, freechess.org, 2021.

6.Bc4 Qf6 7.Nf3+= Ne7 (7...Bg4!? 8.Bg5 Qf5 9.Qe2 Kf8+=) 8.Bg5+- Qg6 9.0-0 Nf5?? (better 9...f6 10.Bf4 d5+-) 10.Re1+- Be6 (10...Kf8 11.Qe2 Be6+-) 11.d5 0-0 (11...h6 12.Bf4 0-0 13.de6+- (worse 13.Re6 fe6 14.de6 Ne7=+)) 12.de6 (12.Re6 fe6 13.de6 Kh8+=) 12...f6 (12...h6 13.ef7 Kh8+-) 13.e7 d5 14.Qd5 Qf7 15.ef8Q Kf8 16.Qf7 1–0. GuestTBLL – kattebasavaraja, freechess.org, 2020.

6.Bc4 Nf6 7.Qe2 Kf8 (7...Qe7 8.Nf3=) 8.Nf3= d5 (8...a6 9.ba6 Na6 10.c3=) 9.Bd3+= Be6 (9...Kg8 10.0-0 a6 11.ba6 Na6 12.c3+=) 10.0-0 Nbd7 (10...a6!?+=) 11.a4+- a5 (11...Ba5!?+-) 12.ba6+- ba6 13.a5 Ba7 14.Ba6 Bg4 15.Be3 (better 15.Rd1 c5 16.Bb7+-) 15...Ne4? (better 15...Bf3 16.Qf3 Bd4 17.Bd4 Ra6+-) 16.Bb7+- Ndf6 (16...Rb8 17.Bd5 Ndf6 18.Be4 Ne4+-) 17.Ba8 Qa8 18.Qd3 Kg8 (18...c5 19.Nbd2 h5 20.dc5 Bf3 21.Nf3+-) 19.Ne5 Bf5 20.Qa6 h6 21.Qc6 Qb8 (21...Kh7 22.a6+-) 22.a6 (22.Na3 Kh7+-) 22...Kh7 (22...Nd6 23.Rc1+-) 23.Nf7 (23.Na3 Nd6+-) 23...Rf8 (23...Re8 24.Qb7+-) 24.Ne5 Nd6 (24...Qb2 25.Ra5 (25.Qc7?! Qa1 26.Qa7 Bc8+-) 25...Bb6 26.Ra4+-) 25.Nc3 Be6 (25...Bc2 26.Nd5 Be4 27.Nf6 Rf6+-) 26.Rfb1 Qc8 (26...Qa8 27.Qc7 Nf7 28.Rb7+-) 27.Rb7! Nb7 (27...Bb6 28.Na4 Bd7 29.Nd7 Qd7 30.Qd7 Nd7 31.Nb6 Nb6 32.Rc7 Ndc4+-) 28.ab7 Qb8 29.Nb5 Bb6 30.Ra8 Bg8 31.Rb8 Rb8 32.Nc7 Ba5 33.Na6 Rb7 34.Qb7 Ne4 35.Qd7 Nf6 36.Qf5 Kh8 37.Ng6 (37.Bh6 Bb4 38.Nb4 Bf7 39.Nf7 Kg8 40.Qg6 Kf8 41.Nd6 Ke7 42.Qf7 Kd6 43.Bf4) 37...Kh7 38.Ne5 Kh8 39.Bh6! Bd8 (39...gh6 40.Qf6 Mate attack) 40.Qg5 gh6 (40...Nh5 41.Ng6 Kh7 42.Nf8 Kh8 43.Bg7 Ng7 44.Qh6 Bh7 45.Qh7) 41.Qh6 Nh7 (41...Bh7 42.Ng6 Kg8 43.Qf8) 42.Ng6 1–0. GuestTRLR – NdocMaka, freechess.org, 2020.

6.Be2 Qf6 7.Nf3 Ne7 8.Bg5 Qg6 9.Be7 (9.0-0 f6 10.Bf4 0-0+=) 9...Ke7+= 10.0-0 (10.Nc3 Re8 11.0-0 Kf8+=) 10...Re8 (10...Bh3 11.Ne1 Re8 12.Bh5=) 11.Bd3+= Qf6 (11...Qh5 12.a4 Ba5 13.Nbd2+=) 12.Nc3 Kf8 13.Qd2 Bg4 (13...Bd4 14.Nd5 Ba1 15.Nf6 Bf6 16.Bh7+/-) 14.Nd5 (14.Ne4 Qd8 15.Nfg5 Bf5+/- (15...Bd4 16.c3 Bb6 17.Nh7 Kg8 18.Nef6 Kh8 19.Ng4+-)) 14...Qd8 (14...Qe6 15.c4 Bf3 16.gf3 A) 16...Bd4? 17.Rae1 Qd7 18.Re8 (18.Bh7?! Re5+/-) 18...Ke8 19.Re1 Be5 20.Be4+-; B) 16...Nd7+=) 15.Ng5+- (15.Bh7?! Bf3 16.gf3 c6 17.bc6 bc6 18.Nb6 ab6+=) 15...Bd4?? (better 15...Nd7 16.Bc4 Bh5+-) 16.Qf4 Bf6 (16...Be6 17.Ne6 Re6 18.Qd4 c6+-) 17.Nh7 (17.Qg4 Bg5 18.Rfe1 Re1 19.Re1 c6+/-) 17...Kg8 18.Nhf6 gf6 19.Qg4 Kh8 20.Qh5 Kg8 21.Qh7 Kf8 22.Qh8 1-0. DEFFM – GuestMGWY, freechess.org, 2021.

6.Be2 Qf6 7.Nf3 Bg4 8.0-0 Bf3 9.Bf3 Bd4? (better 9...c6 10.Be3 Ne7+=) 10.c3+- (10.Bb7?! Ba1 11.Ba8 Ne7+/-) 10...Bc3 (10...c6 11.cd4 Ne7+-) 11.Nc3 Qc3 12.Re1 (12.Bb7?! Qa1 13.Re1 Kf8 14.Ba8 Qc3+-) 12...Ne7 13.Bd2 Qc4 14.Bb7 Qb5 15.Ba8 Qd7 16.Qe2 Kd8 17.Rab1 Nbc6 18.Rec1 Re8 19.Qa6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Nf6 7.a4 Ba5 8.Nd2 (8.Bd2 Bd2 9.Qd2 a6=) 8...Ne4 (8...Bc3 9.Rb1=+) 9.Bd3=+ Nd2 (9...d5!?=+) 10.Bd2= Bd2 11.Qd2 0-0 12.Ne2 a6 13.0-0 ab5 14.ab5 Ra1 15.Ra1 Nd7 16.Ra8 Nb6 17.Ra7 Qf6 (17...Re8 18.c4+=) 18.Qe3 g6 19.c4 Qe6 20.Qe6 fe6 21.Nc3 Rf4 (21...Rd8!?+/-) 22.c5 dc5 23.dc5 Nd5 (23...Nd7 24.Ne4+-) 24.Nd5 ed5 25.c6 bc6 26.Rc7 (26.bc6?! Rf7+=) 26...Bf5 27.Bf5 Rf5? (better 27...gf5 28.g3 Rb4 29.bc6 Rc4+-) 28.b6 (28.bc6?! Rf6+-; 28.Rc6?! d4 29.b6 Rb5+/-) 28...Rf4 (28...d4 29.Rc8 Kf7 30.b7+-) 29.b7 (29.Rc6?! Rb4 30.Kf1 Rb2+/-) 29...Rb4 30.Rc8 Kg7 (30...Kf7 31.b8Q Rb8 32.Rb8+-) 31.b8Q Rb8 32.Rb8 d4 (32...Kf7 33.Rc8+-) 33.Rc8 d3 (33...Kf6 34.Rc6 Ke5 35.Kf1+-) 34.Rc6 d2 35.Rd6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Nf6 7.Nf3 0-0 8.0-0 Re8 9.a4 a6 10.Bb2 ab5 11.ab5 Ra1 12.Ba1 Bg4 13.Nbd2 c5 (13...Nbd7!?=) 14.Nc4+= Bc7 15.Ne3 Bh5 (15...Nbd7 16.Ng4 Ng4 17.c4+=) 16.c4 (16.dc5 dc5 17.Bf6 gf6+-) 16...b6 (16...Nbd7!?=) 17.Re1+= h6 (17...Nbd7 18.d5+=) 18.Nh4+- Be2 19.Qe2 (better 19.Re2 g6 20.Nf3+-) 19...d5? (better 19...Nbd7!?+=) 20.Nhf5+- dc4 21.dc5 bc5? (better 21...Qd3+-) 22.Bf6 Qf6 23.Ng4 Qe6 (23...Qf5 24.Qe8 Kh7+-) 24.Nf6!! gf6 (24...Qf6 25.Ne7 Double attack (25.Qe8 Pinning; 25.Qe8 Deflection); 24...gf6 25.Qg4 Mate attack) 25.Qg4 (25.Qg4 Kh7 26.Qg7) 1–0. GuestJVKF – GuestGMSM, freechess.org, 2020.

6.Nf3 Ba5 7.Bd2+= Qe7 (7...Bd2 8.Nbd2 Nf6 9.Be2=) 8.Be2+- Bb6 (8...Bd2!? 9.Nbd2 Nf6+-) 9.0-0 Bg4? (better 9...Nf6+-) 10.Re1+- d5 (10...Be6 11.d5 Bd5+-) 11.Bc4!! Be6 (11...dc4 12.Ne5 Double attack (12.Re7 Discovered attack; 12.Ne5 Decoy)) 12.Bd5! Nd7 (12...Bd5 13.Re5 Double attack (13.Re7 Pinning; 13.Re7 Deflection; 13.Re5 Decoy)) 13.Bb7 Rb8 14.Bc6 Rd8 (14...Ngf6 15.d5! Nd5 16.Bd5+-) 15.d5 Ngf6 16.de6 fe6 17.Ng5 (17.Qe2 0-0+-) 17...e5 (17...0-0 18.Nc3 Nc5 19.Qe2+-) 18.Qe2 0-0 19.Qc4 (19.Nc3 Kh8+-) 19...Kh8 20.Ne6 (20.Qh4 h6 21.Nf3 Qe6+-) 20...Ng4 (20...Qf7 21.Na3 Bf2 22.Kf2+-) 21.Qg4 Qf6 (21...Bf2 22.Kf1 Bd4 23.Bf3 Rf3 24.gf3 Nf6+-) 22.Bf3 (better 22.Rf1 Nb8 23.Be4+-) 22...h5 23.Qh5 Kg8 24.Nd8 Rd8 25.Bd5 Kf8 26.Bb4 Bc5 27.Bc5 Nc5 28.Re5 Rd5 29.Qe8 1–0. GuestLBRJ – GuestZLHW, freechess.org, 2020.

6.Nf3 Nf6 7.Bd3 h6 8.0-0 0-0 9.Nbd2 c6 (9...a6 10.c4=) 10.a4+= cb5 (10...Be6 11.Nc4+=) 11.ab5+- (11.Bb5?! Nc6 12.Nc4 Bg4=) 11...Nbd7 (11...Be6 12.Ba3+-) 12.Ba3 Qc7? (better 12...Bc7!?+-) 13.Nc4+- Nd5? (13...d5 14.Nb6 Qb6 15.Bf8 Nf8+-) 14.Bd6 Qd8 15.Bf8 Kf8 (15...Qf8 16.Nb6 N7b6 17.c4+-) 16.Nb6 N7b6 17.c4 Nf4 18.Qd2 Nd3 (18...Qf6 19.Rfe1 Be6 20.Be4+-) 19.Qd3 Bg4 (19...g6 20.d5 Bg4 21.Rfe1 Bf3 22.Qf3+-) 20.Ne5 Be6 21.c5 (better 21.d5 Bc8 22.Qh7 Qf6+-) 21...Nd5 22.c6 bc6 23.Nc6 (23.Qh7 f6 24.Nc6 Qd6+-) 23...Qc7 (23...Qf6 24.Qe4+-) 24.Qh7 Ke8 (24...f6+-) 25.Qh8 (25.Qg8 Kd7 26.Qa8 a5+-) 25...Kd7 26.Qa8 (26.Qa8 Qc8 27.Qa7 Ke8 28.Qc5 f5 29.Ra7 f4 30.Re1 f3 31.Qd6 g5 32.Re6 Qe6 33.Qd8) 1–0. GuestZRQV – GuestVQPW, freechess.org, 2020.

6.Nf3 Nf6 7.Be2 0-0 8.0-0 Re8 9.Bb2 Ba5 10.Bd3 Bg4 11.h3 Be6 12.Ng5 h6 13.Ne6 Re6 14.Nd2 d5 15.Nb3 Bb6 16.c4 c6 17.a4 Nbd7 18.a5 Bc7 19.Bf5 Re8 20.a6 dc4? (better 20...ba6!? 21.bc6 Nb8=) 21.ab7+/- Rb8 22.bc6 Nb6 23.Na5 Qd5 24.Qc2 Qd6 25.g3 Nbd5? (better 25...Kh8+/-) 26.Ba3+- (26.Qc4?! Ne3 27.Qc5 Qc5 28.dc5 Nf5 29.Bf6 gf6+/-) 26...Qd8 27.Nc4 Nb6 (27...a5 28.Qd3+-) 28.Bb2 Nfd5 (28...Nc4 29.Qc4 a5 30.d5+-) 29.Ne5 (29.Ra7?! g6 30.Bg6 Nc4 31.Bf7 Kf7 32.Qc4 Qd6+-) 29...Qf6 30.Bh7 Kh8 31.Be4 (31.Ra7?! g6 32.Bg6 fg6 33.Ng6 Kg7+-) 31...Kg8 32.Ra7 h5 (32...Qe6 33.Nd7! Qe4 34.Qe4 Re4 35.Nb8 Bb8 36.Ra8+-) 33.Bd5 Nd5 34.Nd7 Qd6 (34...Qe6 35.Nb8 Rb8 36.Ra8+-) 35.Nb8 (35.Nb8 Bb8 36.Ra5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 Nf6 7.Be2 0-0 8.0-0 Re8 9.Bb2 Bg4 10.a4 a5 11.Nbd2 d5 12.c4 dc4 13.Nc4 Ba7 (better 13...c6!?=) 14.Na5+/- Bd4? (better 14...Qe7!? 15.Re1 Qb4+/-) 15.Nb7+- (15.Nd4?! Be2 16.Ne2 Ra5 17.Qd8 Rd8+/-) 15...Bb2? (15...Qc8 16.Nd4 Be2 17.Ne2 Nfd7+-) 16.Nd8 (16.Qd8?! Rd8 17.Nd8 Ba1 18.Ra1 Nbd7+-) 16...Ba1 17.Bc4 (17.Qa1?! Rd8 18.Rc1 Ra7+-) 17...Bf3 (17...Kf8 18.Bf7 Re7 19.Qa1 Bf3 20.gf3 Nbd7+-) 18.Bf7 (18.Qa1?! Rd8 19.gf3 Nbd7+-) 18...Kh8 (18...Kf8 19.Qf3 (19.Qa1?! Rd8 20.Bc4 Bd5 21.Qa3 Kf7+-; 19.gf3 Nbd7 20.Be8 Rd8+-) 19...Ra4 20.Be8 Ke8 21.Nc6+-) 19.Qf3 Rd8 20.Qa8 Bc3 21.a5 Nfd7 (21...c6 22.a6 cb5 23.a7+-) 22.a6 Nb6 23.Qe4 Bf6 (23...N8d7 24.Rd1 Rf8 25.Rd3 Rf7 26.Rd7 Nd7 27.a7+-) 24.a7 N8d7 25.Rd1 Rf8 26.Rd7! Nd7 27.a8Q Nb8 28.Qa3 Rd8 (28...c5 29.Qh7! Kh7 30.Qh3 Bh4 31.Qh4) 29.Qh7! (29.Qh7 Kh7 30.Qh3 Bh4 31.Qh4) 1-0. onur604 (2320) - IRushMyPawns (2205), Casual Rapid game, 2021.

6.Nf3 Nf6 7.h3 0-0 8.Bd3 (8.Be2 a6=+) 8...Re8=+ 9.Be2 (9.Be3 Nd5 10.Qd2 Qe7=+) 9...Bf5 (9...Qe7 10.a4 Ba5 11.Bd2 Bd2 12.Qd2=+) 10.0-0=+ Ne4 11.c4 a6 12.ba6 Na6 13.a3 h6 14.Bd3 c5 (14...Nb4 15.Be2-/+) 15.Be3 cd4 (15...Qf6 16.Bc2-/+) 16.Bd4 (16.Nd4 Bd4 17.Bd4 Nac5=+) 16...Nac5 17.Bc2 Qd7 (17...Be6 18.Nbd2 Nd2 19.Qd2=+) 18.Nbd2 Nd2 19.Qd2 Be4 (19...Bc2 20.Qc2 Qc7 21.Rab1=) 20.Be4 (20.Bg7 Kg7 21.Be4 Re4 22.Qb2 Kg8 23.Qb6 Rc4+=) 20...Re4 (20...Ne4 21.Qd3 Bd4 22.Qd4=) 21.Rab1 Ba7 22.Rfe1 Rae8 (22...Re1 23.Qe1 Ne6 24.Ba7 Ra7 25.Qb4=) 23.Re4 (23.Qa5 Re1 24.Ne1 Ra8+=) 23...Re4 (better 23...Ne4 24.Qd3 Bd4 25.Qd4 Nc5=) 24.Re1?? (24.Qa5 b6 25.Qb5 Qb5 26.Rb5 f5+=) 24...Qe7?? (better 24...Nb3 25.Re4 Nd2 26.Nd2 f5-+) 25.Re4 Ne4 26.Qe3 Bd4 27.Qd4 Nc5 28.Qd2 Qe4 29.Qd6 Qc4 30.Ne5 (30.Kh2!?=) 30...Qc1-/+ 31.Kh2 Qf4 (31...Qa3? 32.Nd7 Kh7 33.Nc5+-) 32.Kg1 Ne4 (32...Qf2! 33.Kf2 Ne4 34.Ke3 Nd6=+) 33.Qd4 f6? (33...b5 34.Nd3 Qf5 35.f3=) 34.Nf3 (better 34.Qd5!? Kh7 35.Nd3+-) 34...Qf5 35.Qd3 Kh7 36.Qc2 h5 37.a4 Nd6 38.Qf5 Nf5 39.Nd2 Nd4 40.Nc4 Nc6 (40...b5 41.ab5 Nb5 42.f4=) 41.Nd6+= Na5 42.Kf1 (42.f4 Kg8+=) 42...Kg6= 43.Ke2 f5 44.Kd3 Kf6 45.Kd4 Ke6 46.Ne8 g5 (46...g6 47.Nc7 Kd7 48.Nb5+=) 47.Kc5 (47.Ng7 Kf6 48.Nh5 Kg6+/-) 47...Ke7 (47...h4 48.Nc7 Ke5 49.Nb5=) 48.Nc7 (48.Ng7 f4+/-) 48...Kd7 (48...Nc6 49.f4 g4 50.hg4 fg4 51.Nd5 Ke6 52.Ne3=) 49.Nd5 (49.Kb6+=) 49...Nc6? (better 49...Nb3!? 50.Kb6 Kd6+=) 50.Nf6+/- Ke6 51.Nh5 Ne5 52.Ng3 (52.f4 Nd7 53.Kc4 Kf7 54.fg5 Kg6+-) 52...Nd3+/- 53.Kb6 Nf2? (better 53...Nb2 54.a5 Nc4 55.Kb5 Nd6 56.Kc5 f4+-) 54.Kb7 f4 (54...Ne4 55.a5 Nd6 56.Kb8+-) 55.Nh5 (better 55.a5 g4 56.hg4+-) 55...Nd3 56.a5 Nc5 57.Kc6 Na6 58.Kb6 Nb4 59.a6 Na6 60.Ka6 Kf5 61.Ng7 Kg6 62.Ne6 Kf6? (better 62...Kh5!?+=) 63.Nd4 (better 63.Nc5 g4 64.h4 Kf5+-) 63...Ke5? (63...g4 64.h4 Kg6+/-) 64.Nf3 Ke4 (64...Kf5 65.Nh2 Ke4+-) 65.Ng5 Kf5 66.Ne6! Ke6 67.h4 (67.Kb5 Kf5 68.Kc4 Ke4+-) 67...Kd5?? (better 67...Kf5 68.Kb5 Kg4=) 68.Kb5+- f3 69.gf3 Kd4 70.h5 Ke5 71.h6 (71.f4 Kf5+-) 71...Kf6 72.Kc5 Kg6 73.Kd6 Kh6 74.Ke6 Kg7 75.f4 Kf8 (75...Kg8 76.Ke7+-) 76.Kf6 (76.f5 Ke8 77.f6 Kd8 78.f7 Kc8 79.f8Q Kc7 80.Qc5 Kb8 81.Kd7 Kb7 82.Qb5 Ka7 83.Kc6 Ka8 84.Qb7) 76...Ke8+- 77.Kg7 Kd7 78.f5 Kd6 ½-½. cipiripi (2210) - pacal56 (2205), Rated Blitz game, lichess.org, 2015.

6.Nf3 Bg4 7.Be2 Nf6 8.0-0 0-0 9.Nbd2 Nbd7 (9...Nd5 10.Bb2=) 10.c4 Re8 11.Bb2 Nf8 12.a4 Ba5 13.Bd3 Qd7 (13...Bd2!? 14.Qd2 Bf3 15.gf3 d5=+) 14.Qc2 Bh3? (better 14...Ng6 15.d5 Ne5=) 15.gh3+- Qh3 16.Rfe1 Bd2 17.Nd2 Ng4 (17...Ne6 18.Re3 Qh4 19.Nf3+-) 18.Nf1 Ng6 (18...Nf6 19.Ng3+-) 19.Bg6 (19.Be4 Rab8+-) 19...hg6 20.Ra3 Qa3?? (20...Qh4 21.Re2 c6+-) 21.Re8 Re8 22.Ba3 f5 (22...b6 23.c5 dc5 24.dc5+-) 23.c5 d5 24.c6 b6 25.Qb3 Nf6 (25...Kh7 26.Qd5 Re2 27.Qc4 Rf2 28.Qf7+-) 26.Qg3 Kh7 27.Qc7 Re1 28.Bf8 Nh5 29.Qa7 g5 30.c7 (better 30.Qf7 Kh6 31.c7+-) 30...g4 31.c8Q g3 (31...Kg6 32.Qc6 Kg5 33.Be7 Nf6 34.Bf6 gf6 35.Qg7 Kf4 36.Qh6 Ke4 37.Qc2 Kd4 38.Qf6 Re5 39.Qb6) 32.Qf5 Kg8 (32...Kh6 33.Qb6 Re6 34.Qbe6 Nf6 35.Qef6) 33.Qaf7 Kh8 34.Q5h5 1-0. DEFFM – GuestYGXR, freechess.org, 2021.

6.Nf3 Bg4 7.Be2 Nf6 8.h3 Bh5 9.g4 (9.0-0 0-0+=) 9...Bg6= 10.Nh4 (10.Nc3 0-0=) 10...Be4 (10...0-0 11.0-0=) 11.f3 (11.0-0 0-0 12.g5 Nd5=) 11...Bd5 (11...Nd5 12.g5 (worse 12.fe4 Qh4 13.Kd2 Bd4–/+) 12...Bg6 13.c4=) 12.c4 (12.g5 Nh5=+) 12...Be6=+ 13.0-0 (13.Kf2 a6 14.Nc3 ab5 15.Nb5 h6=+) 13...Ng4 (13...Nh5 14.Ng2 Ng3=+) 14.Ng2? (14.Nf5! Bf5 15.fg4=+) 14...Nf6 (better 14...Nh6!? 15.Kh2 Qf6-+) 15.Nf4–/+ 0-0 16.a4 (16.Nc3 Bf5–/+) 16...a5 (16...a6 17.Nc3–/+) 17.Ne6 (17.Nc3 Bf5–/+) 17...fe6 18.Bg5 (18.Nc3 Nbd7 19.Kh2 e5 20.de5 de5-+) 18...h6 (18...Qe8 19.f4 Ne4 20.Kg2 Ng5 21.fg5 Rf1 22.Bf1-+) 19.Bh4–/+ e5 (19...Qe8!? 20.f4 Qg6 21.Kh2 Qe4–/+) 20.c5 dc5 (better 20...Ba7 21.Bc4 Kh8 22.de5 Bc5 23.Kh2 de5-+) 21.Bc4+= Kh8 22.de5 Qd1 (22...g5 23.Bf2 Nh5 24.e6+=) 23.Rd1+- Nh7?? (better 23...Nh5+-) 24.e6+- g5 (24...Re8 25.e7 g5+-) 25.Bg3 Rf3 (25...Kg7 26.Be5 Nf6+-) 26.Be5 Nf6 27.Rd8 Kh7 28.Bf6 Rf6 (28...Nd7 29.ed7 Rd8 30.Bd8 g4 31.hg4 Rf4+-) 29.e7 Nd7 30.Ra8 Ne5 31.e8Q Nc4 (31...Rf8 32.Qf8 Kg6 33.Re8 Kh5 34.Re5 Kh4 35.Qh6 Kg3 36.Ra3 Kf4 37.Qg5) 32.Qg8 1–0. GuestTRFZ – GMAKA, freechess.org, 2020.

6.Nf3 Bg4 7.h3 Bh5 8.a4 a6 9.Bb2 (9.Ra3 ab5 10.Bb5 c6=) 9...Qe7 10.Qe2 Bf3 11.gf3 ab5 12.ab5 Ra1 13.Ba1 Nd7 14.Rg1 Kf8 15.Qe3 Ndf6 16.c4 Nh5 17.Bc3 Nf4 18.c5 dc5?? (better 18...Ba7=) 19.dc5+- Bc5 (19...f6 20.cb6 Nd5 21.Qe7 Nge7 22.bc7 Nc7 23.Bc4+-) 20.Bg7 Ke8 21.Qe7 (21.Qe7 Ke7 22.Bh8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 Bg4 7.h3 Bh5 8.Be2 Nf6 9.0-0 0-0 10.a4 c6 11.Nbd2 Nbd7 (11...Nd5 12.Ra3=) 12.Bb2 (12.Nb3 cb5 13.ab5 Ne4=) 12...Re8 13.Re1 Bc7 14.c4 d5 15.Qc2 Bg6 16.Bd3 dc4 (16...Bd3 17.Qd3 Re1 18.Re1 cb5 19.ab5=) 17.Re8 Ne8 18.Bg6 hg6 19.Nc4 (19.bc6 bc6 20.Nc4+/-) 19...Ndf6 (better 19...cb5!? 20.ab5 Nb6+=) 20.bc6+- bc6 21.Nce5 (21.Nce5 Rc8 22.Nc6+-) 1-0. DEFFM – GuestDSVC, freechess.org, 2020.

4.c3 d5 (4...Nf6 5.Ba3 Ba3 6.Na3=+) 5.Ba3 (5.d4 Bd6=+) 5...Qd6 (5...Ba3 6.Na3 Nf6 7.d4=+) 6.Bc5= Qc5 7.Qh5 (7.d4 Qd6=) 7...Nf6=+ 8.Qg5 (8.Qe5 Be6=+) 8...0-0 9.Nh3 (9.d4 ed3 10.Bd3 Bd7=+) 9...Bh3 (9...a6 10.ba6 Qb6 11.Na3-+) 10.gh3 Nbd7 11.Rg1 g6 12.h4 (12.a3 Qd6–/+) 12...Rfe8 (12...a6 13.a4–/+) 13.h5 Re5 14.Qh6 Rh5 15.Qf4 Kg7 16.Rg6?? hg6-+ 17.d4 ed3 18.Bd3 Rah8 19.Nd2 Qc3 20.Rd1 Qd3 21.Nf3 Qf5 22.Qc7 Qf3 23.Qf4 Qd1 24.Kd1 Rh2 25.Kd2 Rf2! 26.Qf2 Ne4 27.Ke2 Nf2 28.Kf2 Rh2 29.Kg3 Ra2 30.Kf4 Rb2 (31.Kg3 Kf6-+) 0–1. manofsteel2 – Dubaii, Live Game Caissa's Web, 2005.

4.Qg4 Qf6 (4...Nf6!? 5.Qg7 Rg8=) 5.Qe4+- Ne7 6.d4 d5 (6...Bb6 7.Bd3+-) 7.Qf3 0-0?? (better 7...Bf5+-) 8.Qf6+- (8.Qf6 gf6 9.dc5+-) 1–0. GuestZSCT – GuestSQFS, freechess.org, 2020.

4.a4 Nf6 5.c4 (5.Nf3 d5=+) 5...d5 6.Bb2 0-0 7.h4 (7.cd5 Nd5 8.Qh5 Nb4=+) 7...Bf5 8.Nf3 Nbd7 (8...d4 9.ed4 ed4 10.Qe2-+) 9.Qb3 (9.d4 Bb4 10.Nc3 Rfd8–/+) 9...c6 (9...d4 10.Be2 Qd6 11.ed4 ed4 12.0-0–/+) 10.Be2 (10.d4 Bb4 11.Bc3 Bd6=+) 10...Rfe8 11.d4 ed4 12.Nd4 Bd4 13.Bd4 c5 14.Bb2 d4 15.0-0 de3 16.Nc3 (16.fe3 Bg4 17.Bf3 Bf3 18.Rf3 Ng4–/+) 16...Ne4 (16...Rad8 17.Rae1–/+) 17.Ne4–/+ Qe4 (17...Be4 18.fe3 Qh4 19.Rf4–/+) 18.Bf3 (18.fe3 Qe3 19.Qe3 Re3=+) 18...ef2 (18...Qh4!? 19.fe3 Be4–/+) 19.Rf2=+ Qe6 (better is 19...Qh4!? 20.Bb7 Rab8–/+) 20.Bd5 Qg6 21.Rf5 Qf5 22.Rf1 Qg4 (22...Qg6 23.Bf7 Qf7 24.Rf7 Kf7 25.Qf3 Ke7 26.Qb7+-) 23.Rf7 (23.Bf7?! Kh8 24.Be8 Re8=) 23...Rab8?? (better is 23...Re1 24.Rf1 Re6+/–) 24.Rf4 Qe6 25.Qg3 g6 26.Re4 Qd5 27.Re8 (27.cd5 Re4 28.Qc3 Rd4=+) 27...Re8 28.cd5 (28...Re7 29.Qc7+-) 1–0. Roell,Uwe – Mueller,U, Bochum Post op, 1990.

4.Qg4 g6 5.Bb2=.

4.d4 ed4 5.ed4 Bb6 6.a4 a6 7.Bb2 0-0 8.Nf3 d5 (8...Nd5 9.Be2=+) 9.Be2= Ng6 10.0-0 Nf4 11.a5 Ba7 12.Nc3 Ne2 13.Qe2 Bg4 14.Rfd1 Re8 (14...Qd7 15.Qd3 f6 16.Re1 ab5 17.Ba3=) 15.Qd3= Nd7 (15...Qd7 16.Re1 Re1 17.Re1 f6+=) 16.ba6+/- ba6 17.Nd5 Re6 (17...Nf6 18.Nb4+/-) 18.h3 Bh5 (18...Rb8 19.hg4 Rb2 20.Rdb1+/-) 19.Nf4+- Bg6?? (better 19...Rh6+-) 20.Ne6 fe6 21.Qa6 Bd4 (21...Bb6 22.Qb5 (22.ab6?! Ra6 23.Ra6 Nb6+-) 22...Ba5 23.d5+- (worse 23.Ra5 Rb8 24.Qg5 Qg5 25.Ng5 h6+-)) 22.Qe6 Bf7 23.Qc6 (worse 23.Nd4 Be6 24.Ne6 Qc8 25.Ng7 Qb7+-) 23...Bb2 24.Rd7 (worse 24.Qd7 Qd7 25.Rd7 Ba1 26.Rc7 Bf6-/+) 24...Qf8 25.Rad1 Be8 (25...Bf6 26.Ne5! Bh5+-) 26.Qd5 Kh8 27.Qa8 Bf6 28.Re1 (28.Re1 Bd8 29.Re8 Qe8 30.Qd8 Qg8 31.Ng5 h6 32.Qg8 Kg8 33.Rd8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 ed4 5.ed4 Bb6 6.Bb2 0-0 7.Nf3 d6 (7...Ba5 8.Bc3 c6 9.Qd2=) 8.Bd3= Bg4 (8...a6 9.a4=) 9.0-0 (9.Bh7 Kh8 10.Bd3 a6+/-) 9...f5 10.Nbd2 Ng6 11.a4 a5 12.Nc4 Nh4 13.Be2 (13.Nb6?! Bf3 14.Qc1 cb6 15.gf3 f4=) 13...Nd7 14.h3 (14.Ne3 Bf3 15.Bf3 f4 16.Bd5 Kh8+=) 14...Bf3 (14...Bh5 15.Nh4 Be2 16.Qe2 Qh4 17.Qf3+=) 15.Bf3+/- g5? (better 15...Nf3 16.Qf3 Ra7+/-) 16.Bb7+- g4 (16...Ra7 17.Bd5 Kg7+-) 17.Bd5 (17.Nb6?! Nb6 18.Ba8 Qa8+-) 17...Kg7 18.Ba8 Qa8 19.d5 Kg6 (19...Kf7 20.Nb6 cb6 21.f3 gf3 22.Qe1 f2 23.Qf2+-) 20.hg4 Nf6 (20...Qd8 21.g3 Kf7 22.Re1+-) 21.gf5 (better 21.Nb6 cb6 22.g3 Qd5 23.gh4 fg4 24.Qd5 Nd5 25.Rad1+-) 21...Kg7 (21...Nf5 22.g4 Ng7+-) 22.Qg4 Kh8 (22...Ng6 23.fg6 hg6 24.Nb6 cb6 25.Qd7 Rf7 26.Qd6 Qc8+-) 23.Qh4 Qd5 24.Bf6 Rf6 25.Qf6 Kg8 26.Nb6 cb6 27.Ra3 (27.Ra3 Qf7 28.Rg3 Kf8 29.Qh8 Ke7 30.Re1 Kd7 31.Rc3 Qg8 32.Qg8 d5 33.Qd5) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 ed4 5.ed4 Bb6 6.Bb2 d5 7.Nf3 0-0 8.Bd3 Bg4 (8...a6 9.a4=) 9.0-0 (9.Bh7 Kh7 10.Ng5 Kg6 11.Qg4 Qc8+/-) 9...Nd7 (9...Ng6!?=) 10.Bh7+= Kh7 11.Ng5 Kg8 12.Qg4 Ng6 13.Ne6 fe6 14.Qg6 Rf6 15.Qd3 Rh6 16.a4 (16.Nd2 Qh4 17.h3 Rf8+/-) 16...Qh4 17.h3 Nf6?? (better 17...a5+/-) 18.a5+- Rf8 (18...Ba5 19.Ra5 Nh5 20.Bc1+-) 19.ab6 cb6 (19...ab6 20.Bc1 Rh5 21.Nd2+-) 20.Bc1 Rh8 21.Ra7 Ng4 (21...Ne4 22.Qe3+-) 22.Qe2 Nf2 23.Rf2 Rf2 (23...Qd4 24.Be3 Qb4 25.Rf8 Qf8 26.Rb7+-) 24.Qf2 Qe7 25.Ba3 Qc7 (25...Qg5 26.Kh2 Rh6 27.Rb7 Kh7+-) 26.Ra8 Kh7 27.Qh4 Kg6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 ed4 5.ed4 Bb6 6.Nf3 d6 7.Bd3 0-0 8.0-0 a6 9.c4 Bf5 10.Bb2 (10.Nc3 Nd7+=) 10...Bd3= 11.Qd3 ab5 12.cb5 Ng6 13.Nc3 d5 (13...Nd7!?+=) 14.Rfe1+/- Qd7 15.Ne5 Ne5 16.Re5 c6 17.a4 Bc7 18.bc6 (18.Re3 Bd6+/-) 18...bc6+= 19.Re3 Na6 20.Ba3 Rfe8 21.Rae1 Re3 22.fe3 Qg4 23.Rb1 Qh4 24.g3 Bg3 (24...Qd8!?+=) 25.hg3+/- Qg3 26.Kf1 Qf3 27.Ke1 Re8 (27...Nc7 28.Kd2+-) 28.Kd2 (28.Qa6? Qe3 (28...Re3?? 29.Kd2 h5 30.Rf1+-) 29.Ne2 A) 29...Qa3?! 30.Kd1= (30.Qc6?? Qg3 31.Kd1 Qd3 32.Kc1 Qe2-+); B) 29...Qg1 30.Kd2 Qb1-+) 28...Nc7 29.Bd6 Ne6 30.a5 c5? (better 30...Qg2 31.Kc1 Ra8+-) 31.Bc5 Nc5 (31...Qf2 32.Qe2 Qg3 33.Nd5 Nc5 34.dc5+-) 32.dc5 Qg2 33.Qe2 (better 33.Ne2!? Qg5 34.a6 Qe7+-) 33...Qg5 34.Rb4 Rd8 (34...Qe7 35.Nd5 Qc5 36.Qb5+-) 35.Rd4 Qe7 (35...Rb8 36.Rd5 Rb2 37.Kd3 Qg6 38.Ne4+-) 36.Nd5 Qc5 (36...Qe5 37.Qf3 Kf8+-) 37.Nf6! gf6 38.Qg4 (38.Qg4 Qg5 39.Rd8 Kg7 40.Qg5 fg5 41.a6 Kf6 42.a7 g4 43.a8Q Kg5 44.Rg8 Kf6 45.Qd5 Ke7 46.Rg7 Kf6 47.Rf7 Kg6 48.Qf5 Kh6 49.Rh7) 1-0. DEFFM – GuestQVFL, freechess.org, 2021.

4.Bb2 d6 5.c4 Nf6 6.d4 Bb4 (6...ed4 7.ed4 Bb4 8.Bc3 Bc3 9.Nc3=) 7.Nd2= Qe7 8.Be2 0-0 9.a3 Ba5 10.Ngf3 e4 11.Ng5 h6 (11...f4!? 12.ef4 h6-/+) 12.Nh3= g5 13.0-0 (13.Qc2 f4=) 13...Bd2=+ 14.Qd2 Be6 (better 14...f4!? 15.ef4 g4=+) 15.d5+= Bf7 (15...Bc8 16.Kh1+=) 16.f4 g4 17.Nf2 Nbd7 18.Bd4 Bg6 19.a4 b6 (19...Bh5 20.Nh1+/-) 20.a5 h5 (20...Nc5 21.Qb2+/-) 21.Qc3 h4 22.Rfe1 g3 23.hg3 hg3 24.Nh1 Kf7 25.Ng3 Rh8 (25...Ke8 26.Ra2+-) 26.Kf2 Rh2 27.ab6 cb6 28.Rh1 Ng4?? (28...Rh7+-) 29.Bg4 Rh1 30.Rh1 (30.Nh1?! Qh4 31.Ng3 Qg4+-) 30...fg4 31.f5 Rf8 32.fg6 Kg6 33.Kg1 Qf7 (33...Nc5 34.Bc5 dc5 35.Rh8+-) 34.Qc2 (34.Qc2 Re8 35.Rh5+-) 1-0. onur604 (2320) - ChrisConB1 (2205), Casual Rapid game, lichess.org, 2021.

4.Bb2 Qf6 5.Nf3 g5?? (better 5...d6=) 6.Be5+- Qf8 7.Bh8 g4 8.Nd4 (8.Ng1 Nf6 9.d4 Ne4 10.dc5 Qh8+-) 8...Ne7 (8...Nh6 9.Be5 Qe7 10.Nb3 Qe5 11.d4 Bd4 12.Qd4+-) 9.Be5 d6 10.Bf4 Ng6 (10...Bd4 11.ed4 Qf6 12.Nc3+-) 11.Ne2 Bb6 12.h3 Qg7 13.Nbc3 Nd7 14.hg4 fg4 15.Bh6 Qf7 16.Ng3 Nge5 17.Be2 Ba5 (17...Nf6 18.Bg5 Ng8 19.Nce4+-) 18.Bg4 Ng4 19.Qg4 Bc3 20.dc3 Ne5 21.Qd4 Qc4 (21...Be6 22.Nh5+-) 22.Bf4 Qd4 (22...Qb5 23.Rh7 Qb2 24.Rd1+-) 23.cd4 Nf7 24.Rh7 Be6 25.Nh5 (25.e4 Kf8+-) 25...Bc4 26.Nf6 Ke7 27.Bg5 Rh8 (27...Kf8 28.Bh4 Bb5 29.Rb1+-) 28.Nd5 Ke8 29.Nc7 Kd7 30.Rh8 Nh8 31.b6! ab6 32.Na8 Kc6 33.e4 d5 34.e5 Nf7 35.f4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 Bb6? 5.de5+- f4? (better 5...a6!?+-) 6.ef4 Bf2 (6...Ne7+-) 7.Kf2 Ne7 8.Bc4 (8.Nc3 d5 9.ed6 cd6+-) 8...d6 (8...d5 9.ed6! Qd6 10.Nf3+-) 9.Nc3 a6 (9...d5 10.Nd5 Nd5 11.Qd5 Qd5 12.Bd5+-) 10.Nf3 ab5 11.Nb5 Bd7 (11...d5 12.Bd5! Nd5 13.Qd5 Qd5 14.Nc7 Kf7 15.Nd5 h6+-) 12.ed6 Bb5 13.Bb5 Nec6 14.Re1 Kf7 15.Ng5 Kg6 (15...Qg5 16.Bc4 Kf8 17.fg5 Ne5 18.Re5 Nd7 19.Qf3 Nf6 20.dc7 Re8 21.Ba3 Re7 22.c8Q) 16.Bd3 Kh6 1–0. GuestFVNG – GuestYSZY, freechess.org, 2020.

4.d4 ed4 5.ed4 Bb6 6.Bd3 d5 (6...Bd4 7.c3 Bf6 8.Bf5=) 7.Qe2 Ne7 8.Qh5 (8.Nf3 0-0+=) 8...Ng6 (8...g6 9.Qh4+=) 9.Nf3+= 0-0 10.0-0 c6 11.Ng5 h6 12.Qg6 Bd4?? (better 12...hg5 13.c3 Qf6+/-) 13.Qh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 (---> 1.b4 e5 2.Bb2 TESTE500 2…Qf6 3.b5 Bc5 4.e3).

4.Nc3 c6 5.Ne4 Qe7 6.Nc5 (6.Qg4 g6 7.Nc5 Qc5+-) 6...Qc5 7.a4 a6? (better 7...Qe7 8.Qg4 Nf6 9.Qg7 Rg8+-) 8.Ba3+- Qd5 9.Qg4 g6 10.Bc4 f5?! (10...h5 11.Qg5 (11.Bd5?! hg4 12.Ba2 d5+-) 11...Qe4 12.Bd3+-) 11.Qg3 (11.Bd5?! fg4 12.Bd6 cd5 13.Be5 Nf6 14.Bf6 0-0+-) 11...Qc4 (11...Qe4 12.Nf3 f4+-) 12.Qe5 Qe6 (12...Kd8 13.Qh8 ab5 14.ab5+-) 13.Qh8 ab5 (13...cb5 14.Nh3 b4 15.Bb4+-) 14.Nf3 (better 14.Nh3 d6 15.ab5 cb5+-) 14...Ra4 (14...Qd5 15.ab5 d6 16.0-0 cb5 17.Bd6 Ra1 18.Ra1+- (18.Qa1?! Qd6 19.Qh8 Be6+-)) 15.Ng5 Qd5 16.Nh7 Qf7 (16...Kf7 17.Nf6! Qg2 18.Ke2 Ra3 19.Rag1 (19.Ra3?! Nf6 20.Rf1 Ng4+=; 19.Ng8?! Qg4 20.Ke1 Ra1 21.Qa1 Kg8=) 19...Qf2 20.Kf2 Nf6 21.h4+-) 17.Nf6 Kd8 18.Ng8 Kc7 (18...d6 19.Bd6 Ra1 20.Qa1 Na6+-) 19.Qe5 Kb6 20.Bc5 Ka6 21.Ra4 ba4 22.Qc7 b5 (22...Kb5 23.Qb6 Kc4 24.Qb4 Kd5 25.Qd4 Ke6 26.Qd6) 23.Qb6 (23.Qa7) 1–0. GuestPXGN – GuestCQTS, freechess.org, 2020.

4.Nc3 Qe7 5.Nd5 Qd6 6.Qg4+-.

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

4.c3 c6 5.d4 (5.Nf3 e4 6.d4 Be7=+ (< 6...ef3 7.dc5 fg2 8.Bg2+=)) 5...ed4=+ 6.ed4 (6.cd4 Be7=) 6...Bb6 (6...Be7!?=+) 7.Qe2 Qe7 (better is 7...Kf8!?=) 8.Qe7+/– Ke7 9.Ba3 d6 10.Nd2 Re8 11.0-0-0 Ba5 12.Kc2 (12.bc6 Nc6 13.Nc4 Bc7= (< 13...Bc3 14.Nd6 Be6 15.Ne8 Ke8 16.Ne2+/–)) 12...Bf5 13.Kb3 c5 (better is 13...Ne4 14.Ne4 Be4=) 14.dc5+- dc5 (better is 14...Nbd7 15.Nc4 Be6+/–) 15.Bc5 Kd7 16.Nc4 Kc7 17.Na5 b6 18.Bd6 Kc8 19.Nc6 (19.Nc4!? Nbd7+-) 19...Nc6 (19...Be6 20.c4 Nc6 21.bc6+-) 20.bc6 Rd8 (20...Be6 21.Ka3 a6+-) 21.Ba6 1–0. gungho555 – luangprabang, Live Game Caissa's Web, 2004.

4.c3 Be7 5.c4=.

4.c4 0-0 5.f3 Nh5 6.Nc3?? (better is 6.Ne2+=) 6...Qh4-+ 7.Ke2 (7.g3 Ng3! 8.hg3 Qh1-+) 7...Qc4 8.d3 (8.Ke1 Qh4 9.Ke2 Ng3 10.hg3 Qh1 11.Nh3-+) 8…Qc3 (8...Qc3 9.Bd2 Qb2-+) 0–1. Rocka – Wall,Bill, chess.com, 2009.

4.d4 Bb4 5.c3 Bd6 6.de5 Be5 7.Nf3 Bd6 8.Bd3 0-0 9.0-0 a6 10.e4 Ng4 11.e5 Ne5 (11...Be5 12.h3 Decoy; 11...Ne5 12.Ne5 Combination) 12.Ne5 Be5 13.Qh5 Re8?? (better 13...f5=) 14.Qh7+- Kf8 15.f4 (15.f4 Bd4 16.cd4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.d4 Bb6 5.de5 Ne4 6.Qg4 0-0?? (better 6...Ng5+/-) 7.Qe4+- c6 (7...d5 8.ed6! Qd6 9.Nf3+-) 8.Bd3 g6 9.Nf3 d5 10.Qf4 f5 11.Ba3 c5 (11...Ba5 12.c3 Re8 13.0-0+-) 12.Qh6 (12.h4 Be6+-) 12...Ba5 (12...Qe7 13.h4+-) 13.c3 (13.Kd1 Qe7+-) 13...Bb6 (13...Qe7 14.h4 Bd8 15.h5+-) 14.h4 Bd7 (14...Qe7 15.h5 Qg7 16.Qg7 Kg7 17.hg6 hg6 18.c4+-) 15.h5 Be8 16.Nh4 Qe7 (16...gh5 17.Rh3 Bg6 18.Ng6+-) 17.hg6 Qe5 (17...hg6 18.Nf5! gf5 19.Qh8 Kf7 20.Qh7 Ke6 21.Rh6 Qf6 22.ef6 Rf7 23.Qf5 Kd6 24.Qf4 Kd7+-) 18.Qh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.f3 Nc6?? 5.bc6+- dc6 6.a3 (6.Bb2 Bd6+-) 6...0-0 (6...Bd6 7.Bb2+-) 7.c3 (7.Bb2 Re8+-) 7...Nh5 (better 7...Re8+-) 8.g4?? (better 8.g3+-) 8...Qh4–/+ 9.Ke2 Nf4 (better 9...Ng3!? 10.Kf2 Nh1 11.Kg2 e4 12.Kh1 ef3 13.Nf3 Qg4–/+) 10.ef4= Qf2?? (better 10...e4 11.Nh3 Bg4 12.fg4 Qg4 13.Ke1 Qh4 14.Ke2 Qh5 15.Ke1 Qh4 16.Ke2 Qh5 17.Ke1 Qh4=) 11.Kd3+- e4 (11...Qh4 12.fe5 Bf5 13.Kc4 Bg1 14.Rg1 Be6 15.Kd3 Qh2 16.Rg2+-) 12.fe4 (12.Kc2 f5+-) 12...Rd8 (12...Qf4 13.Qf3 Qf3 14.Nf3 Bg4 15.Bg2+-) 13.Kc2 Qf4 14.Bg2 (better 14.d3 Qg4 15.Qg4 Bg4 16.Be2 Be2 17.Ne2+-) 14...f5 (14...Bg4 15.Qf1 Qe5+-) 15.gf5 (15.d4 Qd6 16.gf5 Bb6+-) 15...Qe5 (15...Bf5 16.Qf3 Qf3 17.Bf3+-) 16.Qg4 (16.d4 Qe8+-) 16...b6 (16...Bd6 17.d4 Qa5 18.Bh6+-) 17.Nf3 Qf6 (17...Qe8 18.d4 Bf8 19.Bg5+-) 18.Bb2 (18.d4 Be7+-) 18...g6 (18...Re8 19.c4 Qf8 20.Kd1+-) 19.c4 Qd6 (19...Qe7 20.Rf1+-) 20.Bf1 (20.d4 b5 21.Nbd2 Bb6+-) 20...Rd7 (20...Re8 21.Kc1 Qf8 22.Qh4 Bf5 23.ef5 Qf5 24.Qh3+-) 21.Be5 (better 21.d4 Bd4 22.Bd4 c5+-) 21...Qe7 22.f6 (22.d4 Bd6+-) 22...Qf7 (22...Qe8 23.Qf4+-) 23.Ng5 (better 23.Qh4 Ba6+-) 23...Qf8 (23...Rd2 24.Nd2 Bg4 25.Nf7 Kf7 26.Bc3+-) 24.f7 (better 24.Qe6 Rf7 25.Qf7 (25.Nf7?! Be6 26.Ng5 Re8+-) 25...Qf7 26.Nf7 Kf7 27.d4+-) 24...Rf7 25.Ne6 (better 25.Qg3 Rf1 26.Nh7 Kh7 27.Qh4 Qh6 28.Qh6 Kh6 29.Rf1+-) 25...Be6 26.Qe6 Re8 27.Qc6 (27.Bh3 Re6 28.Be6 Qe7 29.Bf7 Kf7 30.Rf1 Ke8+-) 27...Re5 28.Bd3 (28.Nc3 Bd4+-) 28...Rf6 29.Qb7 (29.Qd7+-) 29...Rf2 (29...c6 30.Qa7 Qd6 31.Nc3+-) 30.Qc7 (30.Nc3 Ba3 31.Qc7 Re7+-) 30...Re7 (30...Qe8 31.Rf1 (31.Qa7?! Rf7 32.Qa6 Bd4+-) 31...Re7 32.Qg3 Qa4 33.Kc1 Rf1 34.Bf1 Re4 35.Kb2+-) 31.Qc6 Qf3 32.Rd1 (32.Nc3 Qg2 33.Rad1 Ba3 34.Qd5 Rff7+-) 32...Rf7 (32...Qh3 33.Nc3 Qh2 34.Nd5+-) 33.Nc3 a5 (33...Qf4 34.h3+-) 34.h4 (34.Na4 Bd4 35.Rab1 Qh3+-) 34...Be3 (34...Qh5+-) 35.Kb3 (35.Qd5 Qg2 36.Be2 Bc5+-) 35...Bc5?? (better 35...Bd4 36.h5 Qd3 37.hg6 hg6 38.Qg6 Kf8 39.Qd6 Ke8 40.Qe6 Re7 41.Qg8 Kd7 42.Qd5 Ke8+=) 36.Bc2 (36.Qd5 Qf4+-) 36...Qf4 (36...Bd4 37.d3+-) 37.Ra2 (better 37.h5!? Qg3+-) 37...a4 (37...Rd2 38.h5! Rd1 39.hg6+- (39.Nd1?! Qf3 40.Kb2 Qh5+-)) 38.Na4 Rc7 (38...Rd2 39.Rd2 Qd2 40.Qa8 Bf8 41.Qd5 Qe3 42.Qd3+-) 39.Qa8 (better 39.Qd5!? Rf7+-) 39...Kg7 40.Qe8 (40.Qd5!? Qg3 41.Kb2 Rf3+-) 40...Rf3 (40...Bd4 41.Qd8 Qe5 42.Qd5+-) 41.d3 (41.Nc3 Re7 42.Qd8 Qg3+-) 41...Bd4 (41...Re7 42.Qc6 Bd4 43.Nc3 (43.Nb6 Qb8 44.c5 Rf6+-) 43...Bc3 44.Kc3 Re4 45.h5+- (45.Qb6?! Rc4 46.Kb2 Qe5 47.Kb1 Rh4+-)) 42.Nc3 (42.h5 Qd6 43.Rh1 Rf8+-) 42...Qh4 (42...Bc3 43.Kc3 Qf6 44.e5 Qh4 45.Bb3+-) 43.Nd5 (43.Nb5 Re7 44.Qc6 Be3+-) 43...Rcf7 44.e5 (44.Qe6 Qh2+-) 44...Rf8 45.Qe6 Qd8 (45...Qg3 46.Nf6 (46.Nb6?! Bb6 47.Qb6 Qe5+=) 46...Be5 47.Nd7+-) 46.Nf6 (46.Re1 Qh4 47.Qe7 Qe7 48.Ne7 h5+-) 46...b5 (46...Be5 47.Nh5! (47.Qe5?! R8f6 48.Re1 Kf8+-) 47...gh5 48.Qe5 Kh6 49.Rb2+-) 47.cb5 Qa5 (47...R8f6 48.ef6 Rf6 49.Qc4+-) 48.Qc4 (better 48.Qd7 Rf7 49.Qd4 Qb5 50.Kc3+-) 48...Be5 49.Nd7 (better 49.Nd5 R8f7 50.Nb4+-) 49...R3f4?? (49...R8f4 50.Ne5 Rc4 51.Nc4 Qb5 52.Kc3 h5+-) 50.Qc5 White prepares the advance b6 (better 50.d4!? Bd6 51.Nf8 Rf8+-) 50...Bd4 (50...Qa4) 51.Qc6 (better 51.Qb4 Qb4 52.ab4+-) 51...R8f7?? (51...Rc8 52.Nb8 Rc6 (52...Rb8?! 53.a4-+) 53.Nc6 Qc3 54.Ka4 Bc5 55.Nb4 Rb4 56.Ka5 Re4 57.Ka6 Qf6 58.Kb7 Re7 59.Kc8 Qf8) 52.b6 (better 52.a4 R7f5 53.Qc4+=) 52...Rd7?? (better 52...R7f5=) 53.Qd7+- Kf6 (53...Kh8 54.Qc6 Rf6 55.Qe8 Kg7 56.Qd7 Kh6 57.Qd4 Rb6 58.Qb6 Qb6 59.Kc3 Qc5 60.Kb2 Qd4 61.Kb1+-) 54.Qd8 (54.Qc6 Kg7 55.b7 Rf6 56.Qf6 Bf6+- (56...Kf6?? 57.b8Q Qc3 58.Ka4 Qc6 59.Qb5+-)) 54...Kf5 (54...Kg7 55.Qc7 Rf7 56.Qc6+-) 55.Qf8 (55.Qc8!? Kf6 56.Qc6 Kg7+-) 55...Kg4 (55...Kg5 56.Qb4 Qd5 57.Qc4+-) 56.Qb4 Qd5 57.Qc4 Qc4 (57...Qd6 58.Re1 Qb6 59.Qb4 Qd8 60.Bd1 Kg3+-) 58.dc4 Rf3 (58...Bb6 59.Rd7+-) 59.Rd3 (better 59.Kb4 Bb6 60.Rd6 Bg1 61.Bg6 Be3 62.Bh7 Rf7+-) 59...Rf4 (59...Rd3 60.Bd3 Bb6+-) 60.b7 Be5 (60...Ba7 61.Bd1 Kg5 62.Rd5 Kh4 63.Rh2 Kg3 64.Rh7+-) 61.a4 (61.Bd1 Kg5 62.Rd5 Rf8 63.Re5 Kh4 64.Rh2 Kg3 65.Rh7 Rb8 66.Re4 Rf8 67.Rg4 Kf2 68.Kc2 Ke1 69.Rh1 Kf2 70.Rh2 Ke3 71.Re2 Kf3 72.Re8 Kf2 73.Rf8 Ke3 74.Rf3) 61...Bb8 (61...Rf7 62.Bd1 Kg5 63.Rg2 Kh6 64.Bf3+-) 62.a5 Rf7 (62...Rf8 63.a6 Ba7 64.c5+-) 63.a6 Rf6 64.Ra4 Kh5 65.Ra5 (65.Rd5!? Kh6 66.a7 Ba7 67.Ra7 Rf8+-) 65...g5 66.a7 Ba7 67.Ra7 Rb6 68.Ka4 g4 69.Bd1 (69.c5 Rb7 70.Rb7 Kh4 71.c6 g3 72.c7 Kg4 73.c8Q Kf4 74.Rb5 g2 75.Qf5) 69...Kg5 70.Ra5 (70.c5 Rb1 71.Bb3 Kh4 72.b8Q Ra1 73.Kb5 Ra7 74.Qd8 Kh5 75.Rd5 Kg6 76.Qg5 Kf7 77.Rd8) 70...Kh4 71.c5 (better 71.Rb3 Rb7 72.Rb7 Kg3 73.c5 Kg2 74.Rb2 Kh3 75.c6 Kh4 76.c7 h5 77.Rb3 g3 78.Rh5) 71...Re6 72.b8Q Re4 73.Kb3 (73.Kb5 Kg5 74.Rd5 Kg6 75.Ra6 Kf7 76.Rd7 Re7 77.Bb3 Kg7 78.Re7) 73...g3 (73...Kg5 74.c6 Re5 75.Qe5 Kg6 76.Qc7 h5 77.Rd6) 74.Qg3 1–0. patrick317 – puttepop, gameknot.com, 2016.

5.ed4 Bd6 6.Bd3 0-0=.

5.ed4 Bd6 6.Be2 0-0 7.Nf3=.

5.ed4 Bd6 6.Be2 c6 7.a4 a6!? 8.bc6 Nc6=+.

5.ed4 Bd6 6.Be2 c6 7.a4 cb5 8.ab5 0-0 9.Nf3 Re8 10.0-0 Bc7 11.c4 d5 12.c5 b6 13.c6 a6 14.Bg5 Re6 (14...Qd6 15.Bf6 Qf6 16.Nc3+=) 15.Nc3+= Qe8? (better 15...Qd6+=) 16.Bf6+- Re2 (16...gf6 17.Nd5 Qd8 18.Bc4+-) 17.Nd5 (17.Nd5 Ra7 18.Nc7 Rc7 19.Be5 Re5 20.Ne5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ed4 Bd6 6.Be2 c6 7.a4 Bc7 8.Nf3+= h6 (8...0-0 9.Nc3+=) 9.Ba3 Ba5 (9...d6!?+=) 10.Nbd2+- Qb6? (better 10...d6!? 11.0-0 0-0+-) 11.0-0+- d5 12.Rb1 a6? (12...Qc7+-) 13.ba6 Qc7 14.ab7 Bb7 15.c4 (15.Bd3 Bc8 16.c4 Bd2 17.Nd2 Kd8+-) 15...Bd2 16.Nd2 Nbd7 (16...Kd8 17.Bf3+-) 17.cd5 Nd5 (17...c5 18.d6! Qc8 19.Rb7 Qb7 20.Bf3+-) 18.Nc4 Nc3 (18...Kd8 19.Bd6 Qc8+-) 19.Rb7! Qb7 20.Nd6 (20.Nd6 Kf8 21.Nb7 Kg8 22.Qe1+-) 1–0. GuestWHVP – GuestTTPP, freechess.org, 2020.

5.ed4 Bd6 6.Be2 c6 7.Nf3 0-0=.

5.ed4 Qe7 6.Be2 Bb4 7.c3 Ba5 8.Nf3 d6 9.0-0 Bb6 10.a4 a5 11.Re1 0-0 12.Bd3 Qd7 13.Nbd2 c6 14.Nc4 Qc7 (14...Bc7 15.b6 Bd8 16.Ba3+-) 15.Bf4 (15.Nb6?! Qb6 16.Bg5 Nbd7+/-) 15...cb5? (better 15...Rd8+-) 16.Bd6 (16.ab5?! Rd8+-; 16.Nd6?! Rd8 17.Qe2 Bg4+-; 16.Nb6?! Qb6 17.ab5 Bg4+/-) 16...Qc6 (16...Qd8 17.Nb6 Qb6 18.Bf8 Kf8 19.ab5 Bg4+-) 17.ab5 Qb5 18.Bf8 Kf8 19.Rb1 Qh5 (19...Qc6 20.Nfe5 Qc7 21.Nb6 Ra7 22.Nc8 Qc8+-) 20.Nb6 Ng4 21.Na8 Nc6 22.Qe2 Ne7 23.Qe7 Kg8 24.Qe8 1-0. onur604 (2320) - zuzubi (2120), Casual Rapid game, 2021.

6.c3 Bd6 7.Be2 0-0 8.Nf3 c5 9.Bb2 cd4 10.cd4 a6 11.a4 (11.Nc3 ab5 12.0-0 b4=) 11...ab5= 12.ab5 Ra1 13.Ba1 Qa5 14.Nbd2 (14.Bc3 Qc7+=) 14...Bb4= 15.0-0 d5 16.Nb3 Qd8 (16...Qb6 17.Ne5=) 17.Bd3+= b6 18.Qc2 Bg4 19.Ne5 Be6 20.Rc1 Nbd7?? (better 20...Qd6+/-) 21.Nc6+- (21.Nc6 Qc8 22.Nb4 Qc2 23.Rc2+-) 1-0. DEFFM – ankoay, freechess.org, 2021.

6.c3 Be7 7.Bd3 0-0 8.Nf3 c5 9.0-0 cd4 (9...d5!?=) 10.cd4+- a6 11.Nc3 1–0. GuestXYPN – GuestJLMP, freechess.org, 2020.

6.c3 Be7 7.Nf3 0-0 8.Bd3 Re8 (8...a6 9.Qa4=) 9.0-0 c6 10.a4 a6 11.Bb2 (11.Ba3 d5=) 11...ab5 12.ab5 Ra1 13.Ba1 cb5 14.Qb3 d6 (14...d5 15.Qb5 b6 16.Qb3=) 15.Qb5+= Qc7 (15...d5 16.Nbd2=) 16.c4 Bd7 17.Qb3 Bg4 (17...Nc6 18.Nc3+=) 18.Nbd2+- Bf3 (18...Nc6!?+-) 19.Nf3+- (19.gf3?! d5=) 19...Bd8 20.Qc2 (20.Rb1 b6+-) 20...Nc6 21.Ng5 (21.Rb1 b6+-) 21...Nb4? (better 21...h6!? 22.Nh7 Kh8=) 22.Bh7+- Nh7?? (better 22...Kf8 23.Qc3 Nh7 24.Nh7 Kg8+-) 23.Qh7+- Kf8 24.Qh8 Ke7 25.Re1 Kf6 26.Nh7 Kg6 27.Re8 Bf6 28.Nf8 Kf5 (28...Kg5 29.h4 Kg4 30.Re4 Kf5 31.Qh5 Bg5 32.hg5 Ke4 33.Qf3) 29.Qh5 g5 (29...Bg5 30.Qh3 Kf4 31.Qf3) 30.Qf3 1–0. GuestPKCS – GuestGXLG, freechess.org, 2020.

7.Bd3 0-0 8.Ne2 c6 9.a4 cb5 10.ab5 d5 11.0-0 Bc7 (11...Re8 12.Bg5 Bc7 13.Ng3=) 12.Ba3 Bd6 (12...Re8 13.Re1=) 13.Qb3 Ng4 14.h3 White is in command 14...Nh2? (better 14...Nf6+=) 15.Bd6 Qd6 16.Re1 Bh3 17.Ng3 (17.gh3? Nf3 18.Kf1 Qh2-+ (18...Ne1?! 19.Ke1 Re8 20.b6=)) 17...Bg2 18.Kg2 Ng4 19.f3 Nf6 20.Nf5 Qf4 (20...Qd8 21.Qb4+-) 21.Ne7 Kh8 22.Re5 Nbd7 23.Nd5 Qh4 24.Rf5 White intends b6 24...Nh5 25.Rh5 Qh5 26.b6 (26.Qa2 Rfe8 27.Na3 Qg5 28.Kf1 Qh5=) 26...a6 (26...Nb6 27.Nb6 ab6 28.Ra8 Ra8 29.Be4= (29.Qb6 Ra2 30.Nd2 Rd2 31.Be2 Re2 32.Kg3 Qh2 33.Kg4 Qg2 34.Kf4 g5 35.Kf5 Qf3 36.Kg5 Rg2 37.Kh4 Qg4)) 27.Nc7+= Qg5 28.Kf2 Qh4 (28...Rab8 29.Ra2=) 29.Ke2+= Qh2 30.Kd1 Qc7?? (better 30...Rad8=) 31.bc7+- (31.bc7 Ra7 32.Qc4+-) 1-0. GuestWVWC – GuestHFTS, freechess.org, 2020.

7.Bd3 0-0 8.Ne2 c6 9.a4 d5 10.0-0 Nbd7 11.Qc2 c5 12.Bg5 h6 13.Bh4 cd4 (13...Re8 14.c4=) 14.cd4 Nb6 15.Nbc3 Be6 16.Rac1 Rc8 17.Bh7 Kh8 18.Bd3 Bg4 (18...Re8 19.h3=) 19.Qb3 Nc4 (19...Be6 20.Rc2+=) 20.Bf6+= Qf6? (better 20...gf6!? 21.Rfe1 Re8+=) 21.Nd5+- (21.Nd5 Qe6 22.Ndf4+-) 1–0. onur604 (2275) – noamdo (1995), lichess.org, 2020.

7.Bd3 0-0 8.Ne2 d5 9.0-0 Re8 (9...a6 10.ba6 Na6 11.Re1=) 10.a4 (10.Re1 a6=) 10...Bg4 (10...Ne4 11.Qc2=) 11.f3 (11.Re1 Qd6=) 11...Bh5 (11...Bd7 12.Re1=) 12.Nf4 Bg6 (12...Qd6 13.Re1 Nbd7 14.Ra2+=) 13.Ng6+= hg6 14.Ba3 (14.Re1 Re1 15.Qe1 Qd6+=) 14...Nbd7 (14...Nh5 15.f4 Qh4 16.Ra2+=) 15.Re1 Nb6 16.Bc5 (16.Ra2 Re1 17.Qe1 Qd7+= (17...Na4? 18.Be7 Qd7 19.Ra4+-)) 16...Nfd7= 17.Bb6 Bb6?? (better 17...Nb6 18.Re8 Qe8=) 18.a5+- 1–0. GuestPBFB – GuestWCYL, freechess.org, 2020.

7.Bd3 0-0 8.Ne2 d5 9.a4 h6 10.0-0 Bg4 11.Re1 Nbd7 12.f3 Bh5 13.Nf4 Nb6 (13...Re8!?+/-) 14.g4 (worse 14.Nh5 Nh5 15.Ra2 Re8+=) 14...Bg6 15.Ng6 (15.Bg6 fg6 16.g5 hg5+-) 15...fg6+/- 16.Bg6 Nc4 17.Ra2 Qd6 18.Qd3 Qd7 (better 18...c5!? 19.Rae2 cd4=) 19.Rae2 Ng4? (better 19...a6+/-) 20.fg4 (20.Re7 Nge5 21.Rd7 Nd3+-) 20...Qg4 21.Rg2 Qh4 22.Re6 Rf6 23.Rf6 Qf6 24.Rf2 Qh4 25.Bf7 Kh8 26.Bd5 Re8 27.Qg6 (worse 27.Qc4 Re1 28.Rf1 Rc1 29.Bb7 Qg4 30.Kh1 c6 31.Rc1 Qf3 32.Kg1 Qe3 33.Kg2 Qg5 34.Kf2 Qc1 35.Qc6 Qf4 36.Ke1 Qe3 37.Kd1 Qg1 38.Kc2 Qf2 39.Nd2 Qf5 40.Kb2 Qf7+-) 27...Re1 (27...Nd6+-) 28.Kg2 Ne3 29.Be3 Re3 30.Rf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Bd3 d6 8.Ne2 Be6 (8...a6!?=) 9.Nf4+= Nbd7 (9...0-0 10.Ne6 fe6 11.0-0+=) 10.Ne6 (10.Qe2 Qe7+/-) 10...fe6+= 11.Qf3 Nd5 12.Qh5 Ke7 13.Bd2 g6 14.Qh3 N7f6 15.0-0 e5 (15...Qd7 16.c4 Bd2 17.Nd2+/- (17.cd5?! Ba5+=)) 16.Re1+- 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bd3 0-0 7.Ne2= a6 8.0-0=.

6.Bd3 0-0 7.Ne2= d5 8.Bb2 (8.0-0 a6=) 8...Bg4 (8...a6 9.a4=+) 9.0-0= Qd7 (9...a6 10.a4=) 10.a4 Bh3?? (better 10...a6=) 11.gh3 (11.a5 Ba5 12.Ra5 Bf5+-) 11...Qh3 (11...a6 12.Kg2+-) 12.Nf4 Qh4 (12...Qh6 13.Qf3 a6 14.a5+-) 13.Ng2 (13.Qf3 a6+-) 13…Qg4 (13...Qg4 14.Qg4 Ng4+-) 0–1. GuestTTFR – GuestVWHZ, freechess.org, 2020.

6.Bd3 0-0 7.Ne2= d6 8.Bb2 (8.0-0 a6=) 8...Be6 (8...Ba5 9.Nd2=) 9.0-0 c5 (9...a6 10.a4=) 10.c4 cd4 11.Nd4 Bd7 (11...Nbd7!?=) 12.Nf5 Bf5 13.Bf5 g6 (13...a6 14.Re1+-) 14.Bh3 (14.Bc2 Re8+-) 14...Ne4 (14...d5 15.Nd2 Ne4 16.Rc1+-) 15.Nc3 Bf2 (15...Nf2 16.Rf2 Bf2 17.Kf2 Nc6+-) 16.Rf2+- Nf2 17.Kf2 Qf6 (17...Nc6 18.Kg1 Ne5 19.Qd5 Qb6 20.Kh1+-) 18.Kg1 1–0. GuestNVBF – GuestXHLH, freechess.org, 2020.

6.Bd3 Bd4 7.Qe2 Qe7 8.Qe7 Ke7 9.c3–/+.

6.Be2 0-0 7.Nf3 Re8 8.0-0 d5 9.a4 Bf5?? (better 9...a6=) 10.a5+- Ba5 11.Ra5 c5 12.Ra3 a6 (12...c4+-) 13.dc5 b6 (13...Be4 14.Be3+-) 14.c6 Ne4 (14...Qd6 15.Re1+-) 15.Bf4 Nc5 (15...Qf6+-) 16.c7 Qe7 17.cb8Q Rab8 18.Bb8 Rb8 19.ba6 Ra8 (19...Be4 20.Nc3+-) 20.Nc3 Qd6 (20...Ne6 21.Ra4 Qe8 22.Bb5+-) 21.Qd5 Qg6 22.Qa8 Bc8 23.Qc8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 0-0 7.Nf3 Re8 8.0-0 d5 9.c4 dc4 10.Bc4 Bg4 11.Qb3 Be6 12.Be6 Re6 13.Nc3 a6 (13...Bd4 14.Bf4 Bc3 15.Rad1=+) 14.a4 (14.Bg5!?=) 14...ab5 15.Ng5 Re7 16.Ba3 c5 (better 16...b4 17.Bb4 Rd7=) 17.dc5+/- (17.Bc5?! Bc5 18.dc5 Nbd7=) 17...Bc7 18.c6 (18.ab5 Rd7 19.Nf3+/-) 18...Bd6? (better 18...Nc6!? 19.Rad1 Rd7 20.Nf7 ba4 21.Na4 Rf7 22.Rd8 Rd8+/-) 19.Rad1 Ne8?? (19...ba4 20.Na4 bc6 21.Bd6 Rd7+-) 20.Nb5 Re5 (20...Nc6 21.Nd6 Nd6 22.Rd6 Qe8 23.Rc6 bc6+-) 21.Qf7 (21.Nf7 Kf8 22.Nd8 Re7 23.Rd6 Nd6 24.Bd6 Nc6 25.Qf7) 21...Kh8 22.Bd6 Nd6 23.c7 Qe8 24.Nd6 Qg8 (24...Na6 25.Ne8 Ree8 26.Qf5 g6 27.Qf6 Kg8 28.Qf7 Kh8 29.Qh7) 25.Qg8 Kg8 26.c8Q (26.c8Q Re8 27.Qe8) 1-0. DEFFM – GuestFGYQq, freechess.org, 2021.

6.Nf3 0-0 7.Be2 c6 8.a4 c5 9.0-0 cd4 10.Nd4 Re8 11.Nc3 d6 12.Bb2 Nbd7 13.Nf5 Ne5 (13...d5!? 14.Nd6 Re6 15.Nc8 Rc8=) 14.Nd6+/- Re6 15.Nc4 White intends a5 15...Qd1 16.Rfd1 (16.Bd1?? Nc4 17.a5 Ba5-+ (17...Nb2?! 18.ab6 Rb6 19.Be2-+); 16.Rad1?! Nc4 17.Bc4 Re8+/-; 16.Nd1?! Nc4 17.Bc4 Re4+/-) 16...Nc4 17.Bc4 Re8 18.a5 Bc5 19.Na4 Bd6?? (better 19...Be7+/-) 20.Rd6+- 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 0-0 7.Be2 d6 8.0-0 Bg4 9.h3 Bh5 10.Bb2 Nbd7 11.Nbd2 Re8 12.a4 a5 (12...c6 13.Re1=) 13.c4 Ne4 14.Ne4 Re4 15.Bd3 Rf4 (15...Re8 16.Bf5+=) 16.Qd2 Rf3 (16...Rf6 17.Ng5 Bg6 18.f4 Bd3 19.Qd3+=) 17.gf3+/- Bf3 (better 17...Qh4!? 18.Kg2 Nf8+/-) 18.Bh7!+- Kh7 Decoy theme: h7 19.Qd3 Theme: Double Attack 19...Kg8 The mate threat is Qg5 20.Qf3 Rb8 21.Kh1 Qh4 22.Rg1 Nf6 (better 22...Bd4 23.Rg4 Qf6+-) 23.c5! dc5 (23...Bc5 24.dc5) 24.dc5 Bc5 (24...Qe4 25.Qe4 Ne4 26.cb6 c5 27.Rg7 Kf8+-) 25.Bf6 Qf2 26.Rg7 Kf8 27.Qg4 Qf6 28.Rg8 Ke7 29.Re1 (29.Rb8?! Qa1 30.Kh2 Qe5 31.Kg2 Qb2 32.Kh1 Qc1 33.Kh2 Qd2 34.Qg2 Bd6 35.Kg1 Qe1 36.Qf1 Bc5 37.Kg2 Qd2 38.Kh1 Qe3=) 29...Kd6 30.Rd1 Ke7 31.Qd7 1-0. DEFFM – MakaKing, freechess.org, 2020.

6.Nf3 d5 7.Ba3 Bg4 8.Be2 Qd7? (better 8...Ne4+=) 9.0-0+- Qe6 (9...Ne4 10.Re1 Kd8 11.c4+-) 10.Nc3 (10.Re1 Ne4 11.c4 Kd8+- (11...dc4?? 12.Qc2 Bf3 13.Bf3+-)) 10...Nbd7 11.Ng5 (11.Qd2!? h6 12.Rae1 Ne4 13.Ne4 de4+/-) 11...Be2+/- 12.Ne6 (12.Qe2?! Qe2 13.Ne2 h6=) 12...Bd1 13.Ng7 Kd8 14.Rfd1 Rg8 (14...Ba5 15.Rd3+/-) 15.Nf5+- Ba5? (better 15...Rg5 16.Nh6 Kc8+-) 16.Be7 Kc8 17.Bf6 Bc3 (17...Nf6 18.Ne7 Kd7 19.Ng8 Rg8+-) 18.Ne7 Kb8 19.Ng8 Ba1 20.Ra1 1-0. DEFFM – icexman, freechess.org, 2021.

6.Bb2 a6 7.a4 c6 (7...0-0 8.Bd3=+) 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 cb5 11.Bd3 (11.Bb5? Qa5 12.Nc3 Nd5-+) 11...Qa5 12.Nbd2 d5 13.0-0 b4 14.Re1 Nc6 15.Ne5 Qc7 16.Qe2 0-0 17.Nc6 Qc6 18.Nf3 Bd6 19.Ne5 Qc7 20.Bb2 Be6 21.f4 Ra8 22.h3 Ra2 23.Rb1 Ne4 24.Be4 de4 25.Qe4 Qc8 26.g4 b3 27.c3 f5 28.Qg2 Ba3 29.c4 Bc4 30.Rc1 Rb2 (30...Bb2 31.Qd5 Kh8 32.Rc4 Bd4 33.Kf1+- (33.Qd4?! Qf8+-; 33.Rd4?? Qc1 34.Rd1 Qe3 35.Kh1 Qh3 36.Kg1 Qh2 37.Kf1 Qf2)) 31.Qd5 Bd5 32.Rc8 Bf8 33.Nd7 Kf7 34.Rf8 Ke7 35.Rf5 Be6 (better 35...Rg2 36.Kf1 A) 36...Kd7 37.Rd5 Kc6 38.Rc5 Kb6 39.Rc3+= (39.Kg2?? b2-+); B) 36...b2 37.Re5 Kd6 38.Rd5 Kd5 39.Kg2 b1Q-+) 36.Rb5 (36.Rg5 g6 37.Nc5-/+) 36...Bd7 (worse 36...Kd7 37.f5 Bc4 38.Rb7 Kc6 39.Rb4-+) 37.Rb7 Kd6 38.d5 Rb1 39.Kg2 b2 40.f5 Ba4 41.g5 Bc2 42.f6 gf6 43.gf6 Be4 (43...Kd5?! 44.f7 Be4 45.Kf2-/+) 44.Kf2 Bd5 (44...Kd5?! 45.f7 Bd3 46.Ke3-/+) 45.Rb5 (45.Rb6 Kc5 46.Rb8 Bc4-+) 45...Bc4 46.Rb8 Kc7 (better 46...Rf1!? 47.Ke3 b1Q 48.Rb1 Rb1 49.Kf4-+) 47.Rb4 Bd5 (47...Rf1!? 48.Ke3 b1Q 49.Rb1 Rb1 50.Kf4-+) 48.h4 Kc6 49.h5 (49.Kg3 Rg1 50.Kf4 b1Q 51.Rb1 Rb1-+) 49...Kc5 50.Rb8 Bc4 51.Kg3 Rg1 52.Kh4 b1Q (52...b1Q 53.Rb1 Rb1-+) 0-1. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bd3 0-0 7.Nf3 d5 8.0-0 Bg4 (8...a6 9.Nc3=+) 9.Nbd2 (9.h3 Bh5=) 9...Nbd7 (9...a6!?=+) 10.Bb2= c6 11.a4 Bd6 (11...c5 12.c4=) 12.c4+= dc4 (12...Re8 13.Qc2+=) 13.Nc4 Bb8 (13...Bf4 14.g3 Bc7 15.bc6 bc6 16.Rc1+=) 14.h3 Bh5 15.Re1 cb5 16.ab5 Qc7? (better 16...Nd5!?+/-) 17.Nce5+- Qd6? (17...Qb6+-) 18.Ba3 Qd5 (18...Bf3 19.Qf3 Qd4 20.Nd7 Qd7 21.Bf8 Kf8+-) 19.Bc4 Bf3 (19...Qc4 20.Nc4 Rd8 21.Qb3+-) 20.gf3 Qc4 (20...Qe5 21.de5 Be5 22.Bf8 Ba1 23.Bg7 Kg7 24.Qa1+-) 21.Nc4 Rc8 (21...Rd8 22.Be7 Rc8 23.Bf6 Nf6 24.Qa4+-) 22.Re7 (better 22.Qb3 a5 23.ba6 ba6+-) 22...Rc4 (22...Re8 23.Re8 Ne8 24.Qc2+-) 23.Qb3 Nb6 24.Bc5 (24.Bc5 Bd6 25.Bd6+-) 1-0. onur604 (2320) - landauer98 (2195), lichess.org, 2020.

6.Nf3 a6 7.ba6 Na6 8.c3 0-0 9.Bd3 d5 10.0-0 Re8 11.Ne5 Bd6 12.f4 c5 13.a4 Qb6 14.a5 Qc7 15.Na3 (15.Bb5 Re7+=) 15...Qa5–/+ 16.Be3 Qb6 (16...Qc3? 17.Nb5 Bg4 18.Ng4 (18.Nc3?! Bd1 19.Rfd1 c4+/–) 18...Ng4 19.Nc3 Ne3 20.Qb1 Nf1 21.Bh7 (worse is 21.Bf1 Nb4+-; 21.Qf1?! Nb4 22.Bb5 Ra1 23.Qa1 Rc8+-) 21...Kh8 22.Kf1+- (22.Qf1?! Kh7 23.Qb1 Kg8+/–)) 17.Qd2 c4 18.Bc2 Ng4 19.Rfb1 Qd8 20.Nb5 Bb8 (20...Ne5?! 21.de5 Bf8 22.h3=; 20...Ne3 21.Qe3 f6 22.Nd6 Qd6 23.Nc4=) 21.Ng4 Bg4 22.h3 Bd7 23.Bf2 Bc6 24.Qc1 Qd7 25.Bg3 f6 (25...Bb5 26.Rb5 Qb5 27.Ba4 Bf4 28.Bf4–/+ (28.Bb5?? Bc1 29.Rc1 Re2-+)) 26.Ra5 g5 27.Rb2 gf4 28.Bh4 Re3 29.Qb1 Qg7 30.Bf5 f3 31.Bg4 Bd7 32.Bd7 Qd7 33.Ra1 Bf4 34.Qf1 Rae8 35.Re1 Qg7 36.Re3 Re3 37.Kh1 Nc7 38.Bf2 Rd3 39.gf3 Nb5 40.Rb5 Rf3 41.Qg2 Qg2 42.Kg2 Rc3 43.Rd5 Rd3 44.Be1 c3 (44...c3 45.Rc5 Bd2-+) 0–1. Geiger,Walter (2050) – Kocandrle,Jaroslav (2085), IECG, 2006.

6.Nf3 a6 7.Bb2 0-0 8.a4 d5 9.Be2 ab5 10.ab5 Ra1 11.Ba1 Re8 12.0-0 Nbd7 13.Nbd2 Nf8 14.Ne5 Ng6 (14...Ne6 15.Re1=) 15.f4 (15.Ng6 fg6 16.Nf3 Ne4=) 15...Bf5=+ 16.c4 Qa8 (16...Bb4 17.c5=+) 17.g4= Be4 (better 17...Bc8!?=) 18.g5+/- Qa3? (better 18...Ne5 19.gf6 Nc4 20.Bc4 Bf6 21.Ne4 de4+/-) 19.gf6+- Bf6 20.Ne4 Qe3? (20...de4 21.Qd2 e3+-) 21.Nf2 Nf4 22.Bg4 Bh4 23.Qf3 (23.cd5 Nd5 24.Bb2 Bf2 25.Rf2 f6+-) 23...Bf2 (23...Qf3 24.Bf3 f6 25.cd5 fe5 26.de5+-) 24.Qf2 Qf2 25.Rf2 g5 26.cd5 Ra8 (26...f6 27.Nd7 Kg7 28.Rf1+-) 27.Bb2 f6 28.Nd7 Kg7 29.Nc5 Ra5 (29...Kg6 30.Bd7+-) 30.Ne6 Kg6 (30...Kf7 31.Nf4 gf4 32.Be6 Kg6 33.b6+-) 31.Nc7 f5 32.d6 fg4 33.d7 Nh3 34.Kf1 Nf2 35.d8Q Nh3 36.Qg8 Kh6 37.Qe6 Kh5 38.Qf7 Kh6 39.d5 Ra2 (39...Ra1 40.Ba1 g3 41.Bg7) 40.Bg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 a6 7.Bd3 ab5 8.Bb5 0-0=.

4.Nc3 d5 5.ed5 Nd5 =+.

4.Nc3 Ng4?? 5.Qg4+- d6 (5...0-0+-) 6.Qg7 Kd7 (6...Rf8 7.Na4 Bb4 8.Nf3+-) 7.Qf7 (7.Na4 Bb4 8.c3 Ba5 9.Qf7 Qe7+-) 7...Qe7 8.Qe7 (8.Qh5 Qf6 9.Nf3 a6+-) 8...Ke7 9.Nf3 (9.Nd5 Kd8+-) 9...h6 (9...Be6 10.Na4 Nd7 11.Nc5 Nc5 12.d3+-) 10.Nh4 (better is 10.Bc4+-) 10...a6 (10...Rg8+-) 11.Ng6 Kd7 12.Nh8 ab5 13.Bb5 c6 14.Be2 Na6 15.Ng6 Nb4 16.0-0 Nc2 17.Rb1 Nd4 18.Bg4 Kc7 19.Bc8 Rc8 20.d3 Rg8 21.Ne7 Rg7 22.Nf5 Rf7 23.Nh6 Rf6 24.Kh1 d5 25.ed5 cd5 26.Nd5 (26...Kd6 27.Nf6+-) 1–0. cdamien – addick, ICC, 2003.

4.d3 c6 5.bc6 dc6 6.Nf3 Ng4 7.d4 Bd4 8.Nd4 ed4 9.Be2 Ne5 (9...Nf2 10.Kf2 d3 11.Nc3 Qh4 12.Kg1 de2 13.Qe2–/+) 10.0-0 (10.Nd2 c5 11.0-0–/+) 10...0-0 (10...d3 11.cd3 Qd4 12.Qb3+=) 11.Bb2 (11.Ba3 Re8–/+) 11...c5 12.f4 Ng6 13.Bc4 (13.f5 Ne5–/+) 13...Qh4 (13...Nc6 14.Qh5 Qd6 15.e5–/+) 14.Bc1 (14.c3 dc3 15.Nc3 Nf4–/+) 14...Qe7 (14...Nc6 15.Qe1 Qe1 16.Re1–/+) 15.Qe2 Nd7 (15...Nc6 16.Nd2–/+) 16.c3 Nb6 17.Bb3 dc3 (17...Rd8 18.cd4 cd4 19.Qd3–/+) 18.Nc3 c4 19.Bc4? (better is 19.Bc2+=) 19...Qc5-+ 20.Be3 Qc4 21.Qc4 (21.Rac1 Qe2 22.Ne2 f5-+) 21...Nc4 22.Bd4 Rd8 23.Bc5 b6 24.Rad1 Ba6 25.Bd4 Nb2 26.Nd5 Nd1 (26...Nd1 27.Rd1 Bc4-+) 0–1. Maly,Guenther (1785) – Meier,Josef (1960), remoteschach.de, 2010.

4.Bb2 Ne7 5.d4 ed4 6.Nd4 Bd4 (6...0-0 7.e3=) 7.Qd4 0-0?? (better 7...f6=) 8.Qg7 1–0. Janek – Mrx, internet, 2018.

4.Bb2 Bg4 5.h3 Bf3 6.ef3 Nf6 7.Bd3 0-0 8.Nc3 d5 9.0-0 Bd4 10.Ba3 Re8 11.Re1 (11.Rb1 Nbd7=+) 11...Nbd7 (11...Nh5 12.Rb1–/+) 12.Rb1=+ Nc5 Black prepares the advance e4 13.Bf1 (13.Bf5 Ne6=+) 13...e4 (13...Ne6!?=+) 14.Ne2= Ne6 15.Nd4 Nd4 16.Bb2 Ne6 (16...Nf5 17.fe4 de4 18.d3+=) 17.d3 (17.Bf6 Qf6 18.fe4 Qg5+=) 17...ed3= 18.Qd3 c6 19.Rbd1 d4 (19...a6 20.bc6 bc6 21.c4+=) 20.bc6+- bc6 21.Bd4 c5 (21...Nd4!? 22.Re8 Qe8 23.Qd4 Qf8+-) 22.Be5+- Qd3 23.Bd3 (23.cd3?! Nd5+=) 23...Rad8 24.Bb5 Rd1 25.Rd1 Rd8 (25...Re7 26.f4+-) 26.Rd8 Nd8 27.Bb8 Ne6 (27...a5 28.Bc7 Ne6 29.Ba5+-) 28.Ba7 Nd5 29.a4 Nec7? (29...Nc3+-) 30.Bc5 (30.c4 Nc3+-) 30...Nc3 31.Bd7 Na6 (31...h6 32.Bd6 N7d5 33.a5+-) 32.Bd6 Ne2 (32...Nd5+-) 33.Kf1 Nd4 34.Bc8 1–0. Marekt – Hamis, gameknot.com, 2018.

4.Nc3 Qf6 5.Ne4= Qf5 (5...Qe6 6.Nc5 dc5 7.Bb2=) 6.Nc5+= dc5 7.Bb2 (better is 7.d3+=) 7...Nh6?? (better is 7...f6=) 8.Be5+- Nd7?? (better is 8...0-0+-) 9.Bg7 (9.Bg7 Qg6 10.Bh8+-) 1–0. Wall,Bill – Pegasus, internet, 1999.

4.e3 Ne7 5.d4 ed4 6.ed4 Bb6 7.Bd3 0-0 8.0-0 Bf5 9.c4 c6 (9...a6 10.Nc3+=) 10.Nc3+/– Nd7 11.Bg5 f6 12.Bf4 Bd3 13.Qd3 Nb8 (13...Bc7 14.Rfe1 Re8 15.Rac1+/–) 14.Ne4 d5 15.Nd6 dc4 (15...Qd7!?+/–) 16.Qc4+- Nd5 17.Rab1 Kh8 18.Bg3 Qe7 19.bc6 bc6 20.a3 Nd7?? (better is 20...Qd7+-) 21.Rfe1 (21.Rfe1 Qd8 22.Qc6+-) 1–0. pereira – fpom, internet, 2016.

4.e3 Nf6 5.d4 ed4 6.ed4 Bb6 7.Bd3 0-0 8.0-0 a6 9.c4 ab5 10.cb5 c6 11.Nc3 Bg4 12.Be3 Nbd7 (12...Ba5 13.Ne4=) 13.bc6 bc6 14.Rb1 (14.h3 Bh5=) 14...Ba5 15.Ne4 Qe7 16.Qc2 Nd5 17.Bg5 (17.Qc6 Nb4 18.Rb4 Bb4=+) 17...f6 18.Bd2 Bf3 19.gf3 Bd2 20.Nd2 f5 21.Kh1 (21.Qc6 Nf4 22.Bc4 Kh8=) 21...Nf4 22.Bf5 Ra5 (22...g6 23.Bd7 Qd7 24.Rb6=+) 23.Qe4 (better 23.Bh7 Kh8 24.Rfe1=+) 23...Qh4?? (better 23...Qf7 24.Qf4 Rf5 (worse 24...Ra2 25.Bh7 Kh7 26.Qf7 Rf7 27.Ne4+=) 25.Qd6 c5=) 24.Bd7+- Rh5 25.h3 d5 26.Qe3 Nh3 27.Qe6 (27.Bc6?? Nf2 28.Kg1 Qg3) 27...Kh8 28.Qh3 Qg5 29.Rfd1 (29.f4 Rh3 30.Bh3 Qf4=) 29...Rh3= 30.Bh3 h5 31.Bg2 (31.a4=) 31...Rf6 (better 31...Qh4 32.Kg1 Qd4=+) 32.Nf1+- Rf4 33.Rb6 h4 34.Ne3 Qh5 35.Ng4 (35.Rc6 h3 36.Kg1 hg2 37.Ng2 Qf3 38.Nf4 Qd1 39.Kh2 Qd4–/+) 35...h3 (35...Kg8!?+-) 36.Bf1+- Rf3 37.Ne5 Rf5 (37...Rf2 38.Rb8 Kh7 39.Bd3 Rf5 40.Rdb1+- (40.Bf5?! Qf5 41.Rb3 c5+-)) 38.Rdb1 Re5 (38...Rf2?? 39.Rb8 Kh7 40.Bd3 g6 41.R1b7 Kh6 42.Rh8 Kg5 43.Rh5 Kh5 44.Rh7 Kg5 45.a4+-) 39.de5 Qf3 40.Kg1 h2 41.Kh2 Qf2 42.Kh1 Qh4 43.Kg2 Qg4 44.Kf2 Qd4 45.Ke1 Qc3 (45...Qe5 46.Kd2 Qf4 47.Kc3 Qe5 48.Kc2 Qh2 49.Kb3+-) 46.Kd1+- Qd4 47.Kc2 Qf2 48.Kc3 Qc5 (48...Qe3 49.Bd3 Qe5 50.Kc2 Qh2 51.Kb3+-) 49.Kd2 Qd4 50.Bd3 Qf2 51.Be2 ½–½. Marekt – Bill32606, gameknot.com, 2019.

3.a4 a5 (--> 1.b4 a5 2.b5 c6 3.a4 e5).

3.a4 Bd6 4.Bb2 Nf6 5.Nf3 Qe7 6.e3 0-0 7.Be2 Bc7 8.0-0 d5 9.c4 (9.d4 e4 10.Ba3 Bd6=) 9...Bg4 (9...e4 10.Ne1–/+) 10.d4 e4 11.Ne5 Be2 12.Qe2 Nfd7 (12...Rc8 13.Rc1=) 13.Nd7 Nd7 14.Nc3 (14.Ba3 Bd6=) 14...Qe6 15.cd5 cd5 16.Rac1 Qd6 17.Qh5 Nf6 18.Qh4 Rac8 19.Ne2 (19.Nb1 Qe6=) 19...Ba5 (better is 19...Qb4!? 20.Rb1 Bd6–/+) 20.Ng3+= Qe6 21.Qf4 h6 22.Nf5 Bd2 23.Rc8 Rc8 24.Ba3 Ba5?? (better is 24...Rc4=) 25.Ne7+- Kh8 (25...Kh7 26.Nc8 Qc8 27.Be7+-) 26.Nc8 Qc8 27.Rc1 Qd7 28.Qb8 Kh7 29.Qa7 (29.Qa7 Bd8 30.Qb8+-) 1–0. pumpkin (2315) – gregorgysi (2420), net–chess.com, 2012.

3.a4 f6 4.e4 (4.Nc3 d5=) 4...Ne7 (4...d5 5.Nc3=) 5.d4 ed4 6.Qd4 cb5 (6...d5!? 7.Nf3 a6=) 7.ab5+- (7.Bb5?! Nbc6 8.Qe3 d5=) 7...b6? (better 7...d5!? 8.Nf3 de4 9.Qe4 Bf5 10.Qb7 Nd7 11.Ra7 Rb8+-) 8.Bc4 (8.Be2 Bb7 9.Nh3 Ng6+-) 8...Bb7 9.Nf3 (9.Nc3 a6 10.Nf3 ab5 11.Ra8 Ba8 12.Nb5 Ng6+-) 9...a6 10.0-0 (better 10.Nc3 ab5 11.Ra8 Ba8 12.Bb3+-) 10...a5?? (better 10...ab5 11.Ra8 Ba8 12.Bb5 Nbc6+-) 11.Nc3 d5 (11...d6 12.e5! Ng6+-) 12.ed5 Bd5 (12...Nd7 13.Re1 Rc8+-) 13.Nd5 Nd7 14.Re1 Rc8 15.Ba3 Nc5 16.Nf6! gf6 17.Qf6 Rg8 18.Bg8 Nd7 19.Qf7 1–0. DEFFM – GuestCMXH, freechess.org, 2019.

3.a4 Qh4 4.Nf3 Qf6 (4...Qh5 5.g4 Qg4 A) worse 6.Ne5 Qd4 7.Ra3 Ba3–/+ (7...Qe5? 8.Re3 Qe3 9.de3+-); B) 6.Nc3+=) 5.Bb2+- e4?? (better 5...d6+-) 6.Bf6+- ef3 1–0. GuestTFGS – GuestYSWP, freechess.org, 2020.

3.Bb2= Qa5 4.Be5+= Qb5 5.Nf3 d6 6.e4 Qa5 7.Bc3 Qc7 8.Bc4 Bg4 9.0-0 Nd7 (better is 9...Nh6!?+=) 10.Bf7!+- Kf7 11.Ng5 Ke8 12.Qg4 Ngf6?? (better is 12...Nc5+-) 13.Qe6 Be7 (13...Kd8 14.Bf6 Nf6 15.Nf7 Qf7 16.Qf7 Be7 17.Qg7 Rg8+-) 14.Qf7 Kd8 15.Ne6 (15...Kc8 16.Nc7 Kc7 17.Qe7+-) 1–0. Taulien,Hans_Juergen – Hangmann,Christian, remoteschach.de, 2002.

3.Bb2 d5 4.a4 Nd7 5.e3 Ngf6 6.Nf3 b6?? (better 6...Bd6!?=+) 7.Be2 (7.bc6 Nc5 8.Bb5 Qe7 9.c7 Bd7 10.Be5 Ng4+-) 7...a5? (better 7...e4 8.bc6 Nc5+/-) 8.bc6+- (8.Ne5?! c5+/-; 8.Be5?! Ne5 9.Ne5 c5+=) 8...Nb8 (8...Nc5 9.Bb5 Qc7 10.Be5+-) 9.Bb5 h5 (9...Qc7 10.Be5 Bd6 11.Bf6 gf6 12.Nd4+-) 10.Ne5 (10.c7 Qd7 11.cb8B Rb8 12.Be5 Rb7+-) 10...Bd6?? (10...Qc7+-) 11.c7 Qd7 12.cb8Q Rb8 13.Nd7 Bd7 14.Bf6 0-0 15.Bd7 gf6 16.Qh5 Kg7 17.Qg4 Kh6 18.Qh3 (better 18.Nc3 Be5 19.Nd5+-) 18...Kg5 19.f4 Kg6 (19...Bf4 20.ef4 Kg6 21.Bf5 Kg7 22.Qh7) 20.Bf5 Kg7 21.Qh7 1-0. onur604 (2320) - SoyFastbone (2595), Casual Rapid game, lichess.org, 2021.

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

3.Bb2= Qe7 4.e4 Qe6 (4...d5 5.ed5 cd5 6.Nf3=) 5.Nf3+= Be7 (5...Nf6!?+=) 6.Ne5+/– f6 (better is 6...Nf6 7.bc6 bc6+/–) 7.Nf3?? (7.Bc4 d5 8.ed5 cd5 9.Bb3–/+) 7...Qe4= 8.Be2 cb5 9.Nc3 Qb4 (9...Qg6!?=) 10.Nb5+/– Na6 11.Bd4 d5 (11...Bc5 12.Bc5 Qc5 13.0-0+=) 12.Rb1 Qa4 (12...Qa5 13.Na7 Bd7 14.0-0+/–) 13.Na7 Bf5?? (better is 13...Bd7 14.Rb7 Qa2+-) 14.Bb5 Qb5 15.Rb5 Nc7 (15...Nb4 16.d3 Na2 17.0-0+-) 16.Rb7 Rc8 (16...Bd6+-) 17.Nc8 (17...Bc8 18.Rc7+-) 1–0. Taulien,Hans_Juergen – Steinbach,Thorsten, remoteschach.de, 2002.

3.Bb2 f6 4.e4 (--> 1.b4 e5 2.Bb2 f6 3.e4 c6 4.b5).

3.Nc3 d5=+ 4.Rb1 (4.Bb2 Nf6=+) 4...Nf6 (4...d4 5.Na4–/+) 5.e3 Qa5 (5...Bd6 6.Bb2–/+) 6.bc6 (6.Nf3 e4 7.Nd4 c5=+) 6...Nc6 7.Rb5 Qd8 8.Nf3 Bg4 (better is 8...e4 9.Nd4 Nd4 10.ed4 a6–/+) 9.Qe2? (9.Be2 b6=+) 9...Be7?? (better is 9...e4 10.Rb7 ef3 11.gf3 Qc8-+) 10.Rb7 0-0 11.Qa6= Nb4 12.Qb5?? d4 13.Qe5 Re8?? 14.Rb4=+ Bb4 15.Qg5?? dc3-+ 16.d4 Bf3 17.gf3 Qd5 18.Rg1 Qg5 19.Rg5 Ba5 20.h4?? Bb6-+ 21.Bg2 Bd4 22.h5 Rab8 23.h6 g6 24.Ke2 Re5 25.f4 Rg5 26.fg5 Rb1 27.ed4?? Rc1 28.f4 Rc2 29.Kf3 Rg2! 30.Kg2 c2 31.gf6 c1Q 32.d5 Qd2 (33.Kg3 g5-+; 32...Qf4 33.a3-+) 0–1. Jolilein – michele@, mySchach.de, 2005.

3.c4 Qf6 4.Nc3+- Bb4 5.Qb3 Bd6 (5...a5!?+-) 6.Ne4 Qe7 (6...Qg6 7.Nd6 Qd6+-) 7.Qg3 Kf8 8.Nd6 Qd6 9.Ba3 Qa3 (9...c5 10.d4! Qe6+-) 10.Qa3 Ne7 11.e3 cb5 (11...h5 12.Nf3 Rh6 13.Ne5+-) 12.cb5 1–0. Silent Move (2115) – spartangreek, redhotpawn.com (1), 2016.

3.c4 g6 4.Bb2 Bg7 5.e3 Ne7 (5...d6 6.d4=) 6.Nf3 d6 7.Be2 0-0 (7...Bg4 8.0-0=) 8.0-0 (8.d4 Re8+=) 8...a6 (8...e4 9.Bg7 ef3 10.Bf8 fe2 11.Qe2 Qf8 12.Nc3=) 9.a4 (9.ba6 Na6 10.d4 Qc7=) 9...ab5 (9...e4 10.Bg7 ef3 11.Bf8 fe2 12.Qe2 Qf8 13.Nc3=) 10.ab5 Ra1 11.Ba1 e4 12.Bg7 (12.Nd4 d5=) 12...Kg7 (12...ef3 13.Bf8 fe2 14.Qe2 Qf8 15.Nc3=) 13.Nd4+= cb5 (13...Nf5 14.Nf5 Bf5 15.Nc3+=) 14.cb5 (14.Nb5 d5+=) 14...Qa5 (14...Nf5 15.Nf5 Bf5 16.Nc3+=) 15.Nc3 (15.Qc2 f5+/–) 15...d5 (15...f5 16.f3+/–) 16.Qb3 b6? (better is 16...Nd7!?+/–) 17.Qb2+- Kg8?? (17...Qa7 18.Ne4! f6+-) 18.Ra1 Qa1 19.Qa1 Nd7 20.Qa7 Re8 21.Nc6 Nc6 22.bc6 Nc5 23.Nd5 Be6 24.Nf6 Kf8 25.Ne8 Ke8 26.Qb6 Nd3 27.Bd3 ed3 28.Qb8 Ke7 29.c7 Kf6 30.Qd8 Kf5 31.f3 Ke5 32.g4 h5 33.Qd4 1–0. secgestor – Istvanny (1655), internet, 2007.

3.d4 Bb4 4.c3 Ba5 5.e4 Nf6 6.Bg5 d6 7.de5 de5 8.Qd8 Bd8 9.Bc4 (9.Nf3 Nbd7 10.Nbd2 0-0=) 9...0-0 (9...Ne4!? 10.Bd8 Kd8–/+) 10.Nf3 Re8 11.Nbd2 Bg4 12.Nh4 h6 13.Bf6 Bf6 14.f3 (14.h3 Bd7 15.bc6 A) 15...Bh4? 16.cb7 (16.cd7?! Nd7 17.Rb1 Nc5+=) 16...Nc6 17.ba8R Ra8 18.Nf3+-; B) 15...Nc6?! 16.Nhf3=; C) 15...Bc6=) 14...Bh5 (better is 14...Bh4!? 15.g3 Be6 16.gh4 cb5 17.Bb5 Rc8-+) 15.Nf5= Bg5 16.Nd6?? (16.Rd1 Rd8=) 16...Re7?? (better is 16...Rd8 17.Bf7 Bf7-+) 17.Nf5 Rd7 18.Nb3 a6 (better is 18...Bg6!?=) 19.Nc5+= Rc7? (19...ab5!? 20.Nd7 Nd7+=) 20.b6+- Rc8? (20...Rd7 21.Bd3+/–) 21.g4 Bg6 22.Rd1 Kh7? (better is 22...Bf5 23.gf5 Be3 24.Nb7 Rf8+/–) 23.h4 Bf4 (23...Bf5 24.hg5 Bg6+-) 24.g5 (better is 24.Nd6 Be3 25.Nc8 Bc5+-) 24...h5 (better is 24...Bf5 25.ef5 Be3 26.Nb7 Bb6+-) 25.Nb7 a5 26.Nbd6 Rd8 27.b7 (better is 27.Bf7 Bf7 28.Nf7 Rd1 29.Kd1 Ra6+-) 27...Ra7 28.a4 Nd7? (better is 28...Rd7+-) 29.Bf7 Bf7 30.Nf7 Rb7 (30...Rb8 31.g6 Kg8 32.Rd7 Rab7 33.Rb7 Rb7+-) 31.Nd8 Rb3 32.Rd7 Rb1 33.Ke2 Rh1 34.Rg7 Kh8 35.Nf7 1–0. dc – peakbagger, HCL–C2365 playchess.de, 2003.

3.e3 Bd6 4.Nc3 Nf6 5.a4 (5.Bb2 0-0=) 5...0-0 6.Be2 Qe7 7.Bb2 Bc7 8.Ba3 d6 9.Nf3 Re8 (9...e4 10.Nd4=+) 10.Bc4 Be6 (10...Qd7!?=+) 11.Ne5+= Bc4 12.Nc4 Qe6 13.Qe2 (13.Nb2!?+=) 13...d5= 14.Nb2 Ne4 (14...d4 15.Ncd1= (15.ed4?? Qd7-+)) 15.g3 (15.Qd3!?=) 15...Nc3=+ 16.dc3 Nd7 17.0-0 Bd6 (17...Be5!?=+) 18.Bd6= Qd6 19.Rfd1 (19.c4 Qf6 20.Rab1 Ne5 21.cd5 cd5+=) 19...Qc5 (better is 19...Qf6!?=) 20.c4+/– Nf6 21.cd5 Nd5 (21...Qc3 22.bc6 bc6 23.Nc4 cd5 24.Nd6+/–) 22.Qc4 Qc4 23.Nc4 Rad8 24.bc6 bc6+/– 25.a5 Nb4 26.Rd8 Rd8 27.c3 Nd5 28.Ra3 Kf8 29.a6 Rb8 30.Ne5 Rc8 31.c4+- Nb4 32.Ra4 c5 33.Nd7 Ke7 34.Nc5! Rc5 35.Rb4 Rc7 36.Kg2 Kd6 37.Kf3 Kc5?! 38.Rb7 Kc6 39.Rb5 g6 40.h4 h6 41.g4 Rd7 42.h5 Re7 43.e4 Rd7 44.hg6 fg6 45.Ke3 Rf7 46.f4 1–0. fifteenminutesofgame (2400) – gregorgysi (2280), net–chess.com, 2004.

3.e4 a6 4.bc6 (4.Qh5 d6 5.Bc4 Qc7 6.bc6 Nf6=) 4...Nc6 5.a3 (5.Nc3 Nf6=) 5...Nf6=+ 6.Nc3 Nd4 (6...Bc5 7.Rb1=+) 7.Nf3= Nc6 (7...Bc5 8.Ne5 d6 9.Nd3+=) 8.Be2 (8.d4 d5 9.ed5 ed4 10.Nd4 Nd5 11.Nc6 bc6 12.Nd5 cd5=) 8...d6 (8...Bc5 9.Rb1=) 9.0-0 b5 (9...d5 10.Nd5 Nd5 11.ed5 Qd5 12.Re1=) 10.Nd5 (10.d4 Be7+=) 10...Ng4 (better is 10...Ne4!? 11.d3 Nf6=+) 11.d4 (better is 11.c4 bc4 12.Bc4+/–) 11...Nd4?? (better is 11...f5 12.ef5 Bf5+/–) 12.Nd4+- Qh4 13.h3 Qg3 14.Bg4 Qh4 15.Nc7 Kd8 16.Na8 ed4 17.Qd4 Bb7 18.Qb6 Ke7 19.Qb7 Kf6 20.Nc7 h5 21.Ne8 Kg6 22.Bf5 1–0. dale2 – Smooth, Live Game Caissa's Web, 2005.

3.e4 cb5 4.Bb5 Nc6 5.c3 (5.Nf3!?=) 5...Nf6=+ 6.Qf3 Be7 7.Ne2 0-0 8.Ba3 d6 9.d4 ed4 10.cd4? (10.Bc6 Bg4 11.Qd3 bc6=+) 10...Bg4?? (better is 10...Qa5 11.Nec3 Nd4-+) 11.Qd3 Be2 12.Qe2?? (better is 12.Ke2 d5 13.e5 Ba3 14.Na3=+) 12...Qa5 13.Kf1 (13.Qd2 Qb5 14.Nc3 Qa6-+) 13...Nd4 14.Qd3 Nb5 15.Bb2 Rac8 16.g3 (16.Nd2 Rfd8-+) 16...Qa4 (16...Qb4 17.Qe2 Nd4 18.a3-+) 17.Kg2 Rc6 (better is 17...Rc2 18.Bf6 Bf6 19.Nd2 Ba1 20.Ra1-+) 18.Nc3 (18.Re1-+) 18...Nc3 19.Bc3 Ne4 (better is 19...Qa3 20.Rhc1 Rfc8 21.Qb1 Rc3 22.Rc3 Qc3 23.Qb7-+) 20.Rhe1 Nc3 21.Re7 Rfc8 (better is 21...b5!? 22.Rd7-+) 22.Rb7 R6c7 (22...Na2?! 23.Qd5 Qc4 24.Qc4 Rc4 25.Ra2=+) 23.Rb3 (23.Rc7 Rc7 24.Qd6 Qe4 25.Kh3 Re7-+) 23...Qe4 24.Qe4 Ne4 25.Re1 d5 26.f3 (26.Rb2 Rc2 27.Re2 Re2 28.Re2 Kf8-+) 26...Rc2 27.Kh3 Nf2 28.Kh4 R2c4 (better is 28...d4 29.Reb1-+) 29.Kg5 (29.g4 Rc2 30.Re7-+) 29...h6 30.Kf5 (30.Kh5 d4 31.g4 d3-+) 30...Nh3 31.Rbe3 Ng5 32.f4 (32.Re8 Re8 33.Re8 Kh7-+) 32...g6 33.Kg4 (33.Ke5 Ne4-+) 33...Ne4 (33...f5!? 34.Kh4 Re4 35.Ra3 Re1 36.fg5-+) 34.a3 Rc2 35.h4 (35.f5 R8c4 36.fg6 fg6-+) 35...Kg7 36.Rd1 (36.f5-+) 36...Nf2 37.Kf3-+ 0–1. vadimus – gera, Live Game Caissa's Web, 2004.

3.e4 Qb6 4.Nc3= a6 (4...Nf6 5.Rb1 Bc5 (5...Qd8 6.Nf3 d5 7.ed5 cd5 8.Ne5 Bd6; 5...Qc7 6.Nf3 Bc5 7.Bc4 a6 8.bc6 dc6) 6.bc6 Qc6 7.Bb5 Qc7 8.Nf3 a6; 4...Bc5 5.Qf3 Qd8 6.Na4 Bf8 7.Bc4 Nf6 8.Qe3 Be7; 4...cb5 5.Bb5 Bc5 6.Qf3 Nf6 7.Nge2 0-0 8.Rb1 Qc7; 4...Qc7 A) 5.Rb1 Nf6 (5...Bc5 6.Qg4 Bf8 7.Qg3 Nf6 8.Nf3 d6; 5...Be7 6.Qg4 g6 7.Qg3 Nf6 8.Nf3 d6) 6.Nf3 Bc5 7.Bc4 a6 8.bc6 dc6; B) 5.Nf3 Nf6 (5...Bb4 6.Bb2 Nf6 7.a3 Bc3 8.Bc3 d6) 6.Rb1 Bc5 7.Bc4 a6 8.bc6 dc6) 5.ba6 (5.Qh5 Qc5 6.Nf3 ab5 7.Qe5 Qe5 8.Ne5 Nf6; 5.bc6 Qc6 (5...dc6 6.Rb1 Qc7 7.Nf3 b5 8.Bb2 Nf6; 5...Nc6 6.Rb1 Qd8 7.Nf3 Nf6 8.Bb2 d5) 6.Nf3 d6 7.Nd5 Nf6 8.Nf6 gf6) 5...Na6 6.Nf3 (6.Rb1!? Qa5 7.Bb2= d6 8.Ba6 Ra6; 6.Bc4 Nf6 7.Nf3 Qa5 8.Ng5 d5) 6...Bc5=+ 7.Bd3 (7.Qe2!? d6 8.Na4=+ Qa5) 7...Bf2–/+ 8.Kf1 (8.Ke2 Bd4) 8...d6 9.Rb1 Qc5 10.Qe2 Bd4 11.Na4 Qa5 12.Nd4 ed4?? (better is 12...Qa4 13.Nf5 Bf5 14.ef5 Nb4-+) 13.Nb6+= Rb8 14.Nc4 (better is 14.Nc8 Rc8 15.Qg4+=) 14...Qc5?? (better is 14...Qa2 15.Rb2 Qa1+=) 15.Ba3+- Qg5 16.Nd6 Kd7 17.Nf7 Qf6 18.Qf3 Qf3 19.gf3 Nf6 20.Nh8 Ke6 21.Rg1 g6 22.Ba6 Ra8 23.Bc4 Kd7 24.Bc5 b5 25.Bb3 Kc7 26.Bd4 Bh3 27.Kf2 Nd7 28.Rg3 (28...c5 29.Rh3 cd4 30.Rh7+-) 1–0. mtr – stefanbr, internet, 2009.

3.e4 d6 4.Bb2 Nf6 5.Nc3 (5.f3 a6=+) 5...a6 (5...d5 6.Nf3 d4 7.Ne2=+) 6.bc6 Nc6 7.a3 Be7 8.Nf3 (8.Nge2 0-0=+) 8...Bg4 (8...0-0 9.Bd3=+) 9.Be2 0-0 10.0-0 h6 (10...Qc7 11.Rb1=) 11.Nh4 (11.Rb1 b5=) 11...Be2 12.Qe2 Ne4 13.Qe4 Bh4 14.g3 (14.Nd5 Bg5=+) 14...Be7 (14...Bg5 15.Qd3–/+) 15.Nd5=+ f5 16.Qc4 Kh7 17.Rae1 Rc8 18.f4 Nd4 (better is 18...b5!? 19.Qd3 Kh8=+) 19.Qd3+= Nc2 (better is 19...Nc6+=) 20.fe5?? (better is 20.Rc1+/–) 20...Ne1-+ 21.Re1 de5 22.Re5 Bf6 (better is 22...Bc5!? 23.Kh1-+) 23.Qf5 (23.Rf5 Kh8 24.Bf6 Rf6 (24...gf6?! 25.Qe3 Kg7 26.Rh5=+) 25.Rf6 gf6-+) 23...Kh8 24.Nf6 Rf6 (24...gf6?! 25.Re6 Rc6 26.Qg6 Qb6 27.Kh1 Rc1 28.Bc1 Qe6 29.Qh6 Kg8 30.Qg6 Kh8 31.Qh6 Kg8 32.Qg6 Kh8 33.Qh6=; 24...Qf6?! 25.Qf6 gf6 26.Re7–/+) 25.Qe4 (better is 25.Qg4-+) 25...Qd2?? (better is 25...Qd7 26.Rd5 Qh3-+) 26.Re8= Rf8 (27.Bg7 Kg8 28.Qe6 Kh7 29.Rf8 Rc1 30.Rf1 Rf1 31.Kf1 Kg7 32.Qe7 Kg6 33.Qb7 Qd3 34.Kf2 Qa3 35.Qc6 Kg7 36.Qd7 Kf6 37.Qd4 Kg6 38.Qe4 Kf6 39.Qf4 Kg6 40.Qg4 Kf6 41.Qh4 Kg7=) =. tit1 – FREEDOM4FISCHER, Caissa's Web, 2004.

3.Nf3 e4 4.Nd4 Qf6 =+.

4.Bb2 d5 5.Be5 Bc5?? (better 5...Nf6=) 6.Bg7+- cb5 (6...Nf6 7.Bh8 Nbd7 8.e3+-) 7.ab5 Qb5 8.Bh8 Qb6 9.e3 Nh6 (9...Nc6 10.Nc3 Nge7 11.Nf3+-) 10.Qh5 (10.Nc3 Bg4 11.Nf3 Qe6+-) 10...Bg4 (10...d4 11.Nf3 de3 12.fe3+-) 11.Qd5 Nd7 (11...Nc6 12.Nc3 Nb4 13.Qe5 Kf8 14.Rc1+-) 12.Qe4 Be7 (12...Be6 13.Nc3 0-0-0 14.Rb1+-) 13.Nc3 Rd8 (13...Qc6 14.Qc6 bc6 15.Nf3+-) 14.Nd5 Qc5 (14...Qd6 15.Bg7 Ng8 16.Ra7+-) 15.Bd4 Qd6 16.Ne7 Be6 17.Qh7 Nf5 18.Nf5 Bf5 19.Qf5 1–0. GuestHFSY – GuestNPMF, freechess.org, 2020.

4.Bb2 Bd6 5.e3 cb5 6.ab5+- Qb4 (6...Qc7!? 7.Na3 Ba3 8.Ra3+-) 7.Ba3 Qa4?? (better 7...Qa5 8.Qg4 g6+-) 8.Nc3 (8.Bd6?! Qa1 9.Nf3 f6 10.Ne5 fe5 11.Qh5 g6 12.Qe5 Qe5 13.Be5 Nf6 14.Bf6 Rf8+-) 8...Qa5 (8...Qa3 9.Ra3 Ba3+-) 9.Bd6 Qb6 10.Be5 f6 (10...Nf6 11.Bd4 Qd6 12.b6+-) 11.Nd5 fe5 12.Nb6 (12.Nb6 Nf6 13.Na8+-) 1–0. GuestMTYT – GuestVJZH, freechess.org, 2020.

4.Bb2 Bd6 5.e3 Ne7 6.Nf3 f6 7.Bc4 (7.Be2 Qc7+=) 7...Bc5= 8.Ne5 (8.Bc3 Bb4=) 8...fe5 9.Qh5 Kd8 10.Be5 d6?? (better 10...d5=+) 11.Bg7+- Re8 12.Bf7 (12.Qh7?! Bf5 13.Qh4 d5 (worse 13...Bc2 14.Bf7+/-) 14.bc6 bc6= (14...dc4?? 15.cb7 Be3 16.ba8Q+-; 14...Nbc6?! 15.Bb3+=)) 12...Bd7 13.0-0 (13.bc6 Bc6 14.Bc3 Qa6+-) 13...a6 (better 13...cb5!? 14.ab5 Qb5+-) 14.Qh7 ab5?! (14...cb5 15.Be8 Be8+-) 15.ab5 Qb5 (15...Qa1 16.Ba1 Ra1+-) 16.Ra8 Kc7 17.Be8 Be8 18.Bf6 d5 19.Be7 Be7 20.Qe7 Bd7 21.Nc3 Qb4 22.Qb4 (22.Qb4 Bc8 23.Qf4 Kd8 24.Qb8 Ke7 25.Qc8 Kf7 26.Qf5 Ke7 27.Qf8 Kd7 28.Rd8 Kc7 29.Na4 b5 30.Qe7) 1-0. DEFFM – GuestZNQG, freechess.org, 2020.

4.Bb2 Bd6 5.e3 Nf6 6.Nf3 Qc7 7.Na3+-.

5.Be5 ba4 6.Bc3 Qa6 7.e3 b5 (better is 7...Qc6!?+=) 8.Na3+- Ba3? (8...Qc6 9.Nb5 Ba6+-) 9.Ra3?? (9.Bg7 Qg6 10.Bh8 b4+-) 9...f6? (9...Nf6 10.Qb1+/–) 10.Qe2 (better is 10.Qg4!? Kf8 11.Bb4 d6 12.Bd6 Kf7 13.Qh5 g6 14.Qc5+-) 10...Bb7 11.Qb5?? (better is 11.Qg4 g6 12.Qb4+/–) 11...Qb5-+ 12.Bb5 Bc6 (better is 12...Bg2 13.Bb4 Bh1-+) 13.Bc6 (13.Ba4?? Bg2 14.Ne2 Bh1-+) 13...Nc6 14.Ra4 Rb8 15.Ra1 Nge7 16.Ne2 Nd5 17.Bd4 Nd4 18.Nd4 0-0 19.0-0 Ra8 20.c4 Nb6 21.d3 a5 22.Rfb1 Nc8 23.Ra4 Ne7 24.Rba1 Rfb8 25.g3 (25.Ra5?? Ra5 26.Rc1 Rb2-+) 25...Nc6 26.Nc6 dc6 27.Ra5 Ra5 28.Ra5 Rb3 29.d4 Rb4 30.c5 h5 31.Ra6 g5 32.Rc6 f5 (32...Kf7+-) 33.Rg6 Kf7 34.Rg5 f4 (34...Ke6 35.Rh5 Rb7 36.Kg2+-) 35.gf4 h4 36.Rh5 Rb1 (36...Rc4 37.Rh4 Kg7 38.Rh5+-) 37.Kg2 h3 (37...Rc1 38.e4 Rc4 39.Rd5+-) 38.Rh3 (38...Rd1 39.Rh7 Kf6 40.Rd7+-) 1–0. MasterofDisaster – poloroid, Live Game Caissa's Web, 2004.

5.Be5 ba4 6.Bc3 Qb5 7.e3 Qc6 8.Nf3 b5 (better 8...d5!?+=) 9.Nd4+- Qb6 10.Nb5 a6 11.Ra4 ab5? (better 11...Nc6+-) 12.Ra8 Na6 (12...b4 13.Be5 d6+-) 13.Rc8 Ke7 14.Qh5 Qb7 (14...Nc7 15.Bd4 Qa6 16.Rc7 Nf6 17.Bf6 Qf6 18.Bb5 Qd6 19.Rd7 Qd7 20.Bd7 Kd7 21.Qf7 Kd8+-) 15.Qe5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be5 ba4 6.Bc3 Qb5 7.e3 Qc6 8.Nf3 b5 (better 8...d5!?+=) 9.Nd4+- Qd5 10.Nb5 Qc6 11.Ra4 a6 (11...Na6 12.Qh5 Nc5 13.Qe5 Ne6 14.Rc4+-) 12.Rc4 Qb7 (12...ab5 13.Rc6 dc6+-) 13.Nc7 Kd8 14.Na8 Qa8 (14...Nc6 15.Rc6! dc6 16.Ba5 Kd7 17.Nb6 Ke8 18.Nc8 Qc8+-) 15.Ba5 Ke8 (15...Ke7 16.Qh5 f5 17.Rc8 Nf6 18.Qf5 Kf7+-) 16.Rc8 Ke7 17.Qh5 Qb7 18.Qe5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be5 ba4 6.Nf3 Nc6 7.Bc3 Nb4 8.e3 Nf6 9.Be2 (9.Bf6 Qf5 10.Na3 Qf6+/-) 9...Nfd5 (9...Be7 10.Bb2 d6 11.c4=) 10.Bb2 b5 11.c3 Nc6 12.0-0 Bd6? (better 12...Ba6!?=) 13.c4+/- Nf6? (better 13...bc4 14.Ra4 Qd8 15.Rc4 0-0+-) 14.cb5+- Nb4 15.Ra4 Qb6 (15...Qd8 16.Na3 0-0 17.Nc4+-) 16.Bd4 Bc5 (16...Qb8+-) 17.Rb4! Bd4 (17...Bb4 18.Bb6 Pinning (18.Bb6 Deflection; 18.Bb6 Overloading)) 18.Rd4 0-0 19.Ne5 1-0. DEFFM – egoy, freechess.org, 2021.

5.Be5 Nc6 6.ab5 Qb5 7.Bg3 Nf6 8.e3 Qd5 (8...Qf5!?=) 9.Nc3+/- Qe6?? (better 9...Qh5+/-) 10.Nb5+- Nd5 11.c4 Bb4 (11...Ncb4 12.cd5 Qf5 13.Nc7 Kd8+-) 12.cd5 Bd2 (12...Qe4 13.Nc7 Kf8 14.dc6+-) 13.Qd2 Qf6 14.Nc7 Ke7 15.Ra4 Rb8 16.Re4 Kd8 17.Nb5 d6 18.Bh4 g5 19.dc6 bc6 20.Bg5! Qg5 Deflection from d6 (20...Rb5 21.Qd6 Bd7 22.Bf6 Kc8 23.Bb5 cb5 24.Be5 Kb7 25.Qd7 Kb6 26.Qc7 Ka6 27.Qc6 Ka5 28.Bc7) 21.Qd6 A double attack. 21...Bd7 22.Qb8 (22.Qc7) 22...Bc8 23.Qc7 1-0. DEFFM – GuestZNQG, freechess.org, 2020.

5.Nf3 Nc6 6.Ne5 Ne5 7.Be5 b4=.

5.e3 cb5 6.ab5 Qb6 7.c4 Qc5 8.d4+- ed4 (8...Qc7!?+-) 9.Bd4 Qb4?? (9...Qf5+-) 10.Nd2 b6 (10...d5 11.c5! Nd7+-) 11.Qf3 Ne7 (11...d5 12.Qd5 Bc5 13.Bg7+-) 12.Qa8 Nd7 13.Ra7 Nc5 14.Re7! Ke7 (14...Ke7 15.Qa7 Double attack (15.Qc8 Remove defender); 14...Be7 15.Qc6 Double attack (15.Qc8 Remove defender)) 15.Qc8 Qa3 16.Qc7 Ke6 17.Nh3 Qc1 18.Ke2 Qc2 (18...Qd2 19.Kd2 Ne4 20.Kc1 h5 21.Nf4 Kf5 22.Qf7 Kg4 23.h4 Ng5 24.Be2 Nf3 25.gf3) 19.Nf4 Kf5 20.Qf7 Kg5 21.Qh5 1–0. GuestYVQG – GuestXGZD, freechess.org, 2020.

5.e3 Bd7 6.Nf3 cb5 7.ab5+- Qb4 8.Ba3 (8.Qc1 Nf6+-) 8...Qg4+- 9.Be2 (9.Nc3 Nf6+-) 9...Qe6 (better 9...Qg2!? 10.Rg1 Qh3+=) 10.0-0 (10.Nc3 Nf6+-) 10...h6 (10...Qg6 11.Nc3 Nf6 12.g3+-) 11.c4 (11.Nc3 Nf6 12.d4 Bc8+-) 11...b6? (better 11...Nf6+-) 12.Nc3 Nf6 13.Qb3 (13.d4 e4+-) 13...Be7 (13...Bc8 14.Nd5 Nd5 15.cd5+-) 14.d4 e4 15.Nd2 0-0 (15...Bc8 16.f4 Bb7 17.f5+-) 16.Qc2 (better 16.Nde4 Ne4 17.Ne4+-) 16...d5?? (16...Rd8+-) 17.cd5 Nd5 18.Bc4 (better 18.Nd5 Qd5 19.Be7+-) 18...Ba3 (18...Rc8 19.Bd5 Qd5 20.Nd5 Rc2 21.Ne7 Kh7 22.Ne4 Bb5+-) 19.Bd5 Qg4 (19...Qe7 20.Ba8 Be6 21.Nd5 Bd5 22.Bd5+-) 20.Ra3 Bf5 21.Ba8 Nd7 22.Ra7 Nf6 23.Nc4 Rd8 24.Ne5 Qg5 25.Nf7 (25.Nf7 Ra8 26.Ng5 Ra7 27.Nge4+-) 1–0. GuestRCPG – GuestRQTD, freechess.org, 2020.

5.e3 Bd7 6.Nf3 cb5 7.ab5 Qb6 8.c4 Nf6 9.Nc3 Be7 10.d4 0-0 11.de5 de5 12.Ne5 Be6 13.Bd3 Nbd7 (13...Rd8 14.0-0+/-) 14.Nd7 Nd7 15.0-0 Nc5 16.Nd5 Bd5 17.cd5 Nd3 18.Qd3 Bf6 19.Bf6 Qf6 20.d6 Rfd8 21.Rfd1 Rd7 22.e4 Qe5 23.g3 g5 (23...Qe8 24.Qd5+-) 24.Kg2 g4 25.Qd5 Qd5 26.Rd5 (26.ed5?! a6+=) 26...Re8? (26...f6 27.h3 gh3 28.Kh3+-) 27.e5 (27.Ra7 f6+-) 27...Re6 (27...f6 28.ef6 (28.Ra7?! Re5 29.Re5 fe5+/-) 28...Kf7 29.Ra7+-) 28.Ra4 b6 (28...h5 29.Rc5 b6 30.Rc7+-) 29.Rg4 Kf8 30.Rc4 f5 (30...f6 31.f4+-) 31.Rf4 Rf7 (31...Ke8+-) 32.d7 (32.d7 Rd7 33.Rd7 Re5 34.Rh7+-) 1-0. DEFFM – GuestXWZD, freechess.org, 2021.

5.e3 Bd7 6.Nf3 cb5 7.ab5+- Qc7 8.Nc3 Nf6 9.Be2+-.

5.e3 Nf6 6.Nf3 Bg4 7.Be2 Be7 8.0-0 0-0 9.c4 Be6 (9...Nbd7 10.Nc3=) 10.d4 e4 11.Ng5 Bd7 (11...Bf5 12.g4 h6 13.gf5 hg5 14.Nc3+=) 12.Qd2 h6 1–0. GuestPXGN – Fullball, freechess.org, 2020.

4.Bb2 Qc7 5.e3 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.Be5+/- cb5?? (better 8...d6 9.Bc3 Qa4+/-) 9.Bb8+- Nf6 10.Nf3 (10.Nc3 Be7+-) 10...Bb4 (10...d6 11.Qe2+-) 11.c3 (11.Nd4 0-0+-) 11...Be7 12.Nd4 d5 (12...b4 13.Bd3+-) 13.Bb5 (13.Bb5 Bd7 14.Qb3+-) 1-0. onur604 (2320) - magician45 (2135), lichess.org, 2020.

4.Bb2 Bd6 5.Nf3 f6 6.e4 cb5 (6...Bc5!?=) 7.ab5+/- b6 8.d4 ed4 9.Nd4 Bc5 (9...Be5 10.Bc4 Ne7 11.Qh5 g6 12.Qe2+/-) 10.Nf5 d6? (better 10...g6 11.Nd6 Bd6 12.Qd6 Bb7+-) 11.Ng7+- Kf7 (11...Ke7+-) 12.Qd5 Kg7 13.Qa8 Ne7 (13...Bd7 14.Ra6 d5+-) 14.Qb8 ab5 15.Ra7 Kg6 (15...b4 16.Bb5+-) 16.Bb5 d5 17.Qg3 (17.Qg3 Kf7 18.Qf3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.c4 Qa5 5.Bb2= d6 6.e3 Qb4 (6...Nf6!?=) 7.Bc3+= Qc5 8.d4 ed4 9.Bd4 Qf5 10.Nf3 Be6 11.Bd3 Qh5 12.Nbd2 c5 13.Bc3 Nd7 14.Ne4 h6?? (better is 14...f6+/–) 15.Ng3+- Qe5 (15...Qg4 16.h3 Qc4 17.Bc4 Bc4 18.ba6 Ra6 19.Rb1+-) 16.Ne5 Ne5 17.Be5 de5 18.0-0 (18.Qf3!? Rd8 19.Qb7 ab5 20.ab5 Ne7+-) 18...Rd8 19.Qc2 Nf6 20.Rad1 Bd6 21.Ne4 Ne4 22.Be4 Bc8 23.Rd2 Rd7 (23...Bc7 24.Rfd1 Ke7 25.Rd8 Rd8 26.Rd8 Bd8 27.Bf5+-) 24.Rfd1 (better is 24.ba6 ba6 25.Bc6 Bc7+-) 24...Ke7 25.Bf5 (25.Bf5 Rhd8 26.Bd7 Rd7 27.Rd5 ab5 28.Qd2+-) 1–0. Wiedermann,Jan (1740) – Pham,Hoang, Karlovy Vary op, 2009.

4.c4 ab5 5.cb5 cb5 6.Nc3 Bb4 7.Nb5 Nc6 8.Bb2 (8.Rb1 Bc5=) 8...Nf6 9.e3 (9.Nf3 d6+=) 9...d5 10.Nf3 Qe7 11.Be2 0-0 12.0-0 Bf5 (12...Bg4 13.d4 e4 14.Ne5 Be2 15.Qe2+=) 13.h3 (13.d3!?=) 13...Rfc8 14.Nh4 (14.d3 Nd7–/+) 14...Be6 15.f4 (15.Nf3 d4–/+) 15...e4 (15...Ne4 16.Nf3 Ng3 17.Re1-+) 16.f5 Bd7 17.Bc3 (17.Rc1 Ne5–/+) 17...Bc3 18.Nc3 (better is 18.dc3!? Na5 19.Qe1-+) 18...d4-+ 19.ed4 Nd4 20.Rb1 Qc5 21.Kh1 Rc7 (21...Ra7 22.Bb5 Bb5 23.ab5-+) 22.Nb5 (22.Bb5 Bb5 23.ab5 Qd6-+) 22...Bb5 23.Bb5 Qd6 24.Rc1 (24.d3-+) 24...Rc1 25.Qc1 Nb5 (better is 25...Nh5!? 26.Kg1 Ng3 27.Rf2 Nb5 28.ab5-+) 26.ab5 Nh5 27.f6 (27.Kg1 Ng3 28.Re1-+) 27...Ng3 28.Kg1 Ne2 29.Kh1 Nc1 30.Rc1 Qd2 31.Rf1 Qg5 32.g3 Qg3 33.Ng2 Qh3 34.Kg1-+ Ra2 35.Rf2 Ra1 36.Rf1 Rf1 37.Kf1 e3 38.Kg1 e2 39.Kf2-+ Qh2 (better is 39...gf6 40.Ne3 Qe3 41.Ke3 e1Q 42.Kd4 h5-+) 40.fg7 e1Q! 41.Ke1 Qg2 42.b6 Kg7 43.Kd1 Kf6 44.Kc1 Ke5 45.Kb1 Kd4 46.Kc1 Kc3 0–1. MasterofDisaster – NORSEWIKING, Live Game Caissa's Web, 2004.

4.bc6 dc6 5.Bb2 Bd6 6.g3 (6.Nf3 Qa5=) 6...Be6 7.f4 f6 (7...ef4 8.Bg7) 8.e3 (8.fe5 fe5 9.a5+=) 8...ef4 9.ef4 Ne7 10.Qe2 0-0?? (better is 10...Bd5 11.Nf3 0-0–/+) 11.Qe6+- Kh8 12.Bg2 Re8 13.Ne2 Nd5 14.Qg4 Qe7 (14...Qb6 15.Bc1+-) 15.Bf3 (15.Nbc3 Nb4 16.Be4 Nd7+-) 15...Nd7 16.0-0 Bc5 17.Bd4 N7b6 18.d3 (better is 18.a5 Bd4 19.Nd4+-) 18...Bd4-+ 19.Nd4 Qe3 20.Rf2?? (better is 20.Kh1 Qd4 21.c3 Qd3 22.Rd1-+) 20...Qd4 21.c3 (21.Nc3 Qc3 22.Raf1-+) 21...Qe3 (better is 21...Re1 22.Kg2 Ne3 23.Kh3 Ng4 24.cd4 Nf2 25.Kg2 Nd3-+) 22.c4?? (22.Bd5 Nd5 23.Qd1 Rad8–/+) 22...Qe1 (better is 22...Qd4 23.cd5 Qa1-+) 23.Kg2?? (better is 23.Rf1 Qf1! 24.Kf1 Ne3 25.Kf2 Ng4 26.Bg4-+) 23...Ne3 24.Kh3 Ng4 25.Bg4 Qf2 26.Nc3 g5 (better is 26...Qc2 27.Ne4 Qd3 28.Nf2-+) 27.Ne4 Qd4 28.fg5 Qa1 29.gf6 Qf1 30.Kh4 Re4! 31.de4 Qf6 32.Kh3 Nc4 33.Bf5 Ne3 34.g4 Qh6 35.Kg3 Rg8 36.h3 Nf5 37.ef5 Qe3 38.Kh4 Qf2 39.Kh5 Qg3 40.h4 Qg4 0–1. MasterofDisaster – Horseraddish, Live Game Caissa's Web, 2004.

6.Ba1 cb5 7.Be5 Nc6 8.Bb2 d5 9.e3 d4 (9...b4 10.Ne2+=) 10.Bb5 de3 11.Qe2 (11.de3 Qg5 12.Bf1+/-) 11...Qe7 (better 11...Qd5!? 12.Qe3 Nge7=) 12.Qe3+/- (12.de3?! Qb4 13.c3 Qe4=; 12.fe3? Qb4 13.Qc4 Qb2 14.Bc6 bc6 15.Qc6 Bd7 16.Qa8 Ke7 17.Qa3 Qa3 18.Na3 Ke8-+) 12...Bd7 13.Ne2 Qe3 14.fe3 f6 15.Nbc3 Nge7 16.0-0 Ne5 17.Ra1 Kf7 (better 17...Bb5 18.Nb5 Nc4+-) 18.Bd7 Nd7 19.Ra7 Nc5 20.Ba3 Nc6 21.Bc5 Na7 22.Ba7 Bd6 23.Nb5 Bb4 24.c3 Be7 25.Ned4 Rd8 26.Kf2 Rd7 27.Bb6 g6 28.e4 h5 29.Ke3 Bd8 30.Bd8 Rd8 31.c4 Ke7 32.Nc7 Rd7 (32...h4 33.Nd5 Kf7 34.Nb5+-) 33.Nd5 Kf7 34.Nb3 Rd6 35.Nc5 b6 36.Na4 b5 (36...f5 37.e5 Rd7 38.Nab6+-) 37.cb5 Ke6 (37...f5+-) 38.Nc5 Ke5 (38...Kf7 39.b6 Rd8+-) 39.d4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Ba1 d6 7.e3 Be7 8.f4 Bf6 9.fe5 Be5 10.Be5 de5 11.Qh5 Qf6 12.Nc3 h6 (12...Bf5 13.e4 Bg6 14.Qh3=) 13.Ne4 Qe6? (13...Qe7 14.Nf3 Nd7 15.Bc4+=) 14.Nf3 (better 14.Bc4! Qe7 15.Nf3+-) 14...Nf6+/- 15.Nf6 Qf6 (15...gf6 16.Qh4+=) 16.Qe5+/- (16.Qe5 Qe5 17.Ne5+/-; worse 16.Ne5 g6 17.Ng6 fg6-/+) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Ba1 d6 7.e3 Nf6 8.Nf3 Bd7 9.c4 cb5 (9...e4 10.Nd4=) 10.cb5= Qb6 11.Qb3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Ba1 e4 7.c4 d5 8.Qa4 f5 9.e3 Nf6 10.Qa7 (10.bc6 Nc6 11.Bf6 A) 11...Qf6? 12.cd5 Qb2 13.Nc3+- (13.dc6 Qb1 14.Qd1 Qd1 15.Kd1 bc6=+); B) 11...gf6 12.cd5 Qd5+=) 10...Qc7 (10...Nbd7 11.bc6 bc6 12.Nh3=+) 11.Ne2 (11.Bf6 gf6 12.cd5 cd5+=) 11...Nbd7 (11...dc4 12.Bf6 gf6 13.Nd4=) 12.bc6= Qc6 13.Nd4 Qa6 14.Qa6 ba6 15.Nf5 dc4 16.Bd4 (worse 16.Bc4 Nb6 17.Ba6 Bf5–/+) 16...Nc5 17.Ng7 Kf7?? (17...Bg7 18.Bc5 Deflection (18.Bc5 Overloading)) 18.Nh5!!+- Nh5 19.Bc4 (19.Bh8?! Be6+-) 19...Be6 20.Be6 Ke6 21.Bh8 Nd3 (21...Be7 22.f3+-) 22.Ke2 1–0. onur604 (2285) – CgaDeaimann (2060), lichess.org, 2020.

5.c4 ab5 6.ab5 Ra1 7.Ba1 Be6 8.e3 g6 (8...Nf6 9.Nf3=+) 9.d4= White terminates the opponent with strong threats 9...ed4 (9...Bg7 10.d5 cd5 11.cd5=) 10.Qd4 f6 11.Nf3 c5 (11...d5 12.Ng5 Bf5 13.e4 Bb4 14.Ke2 Be4 15.Ne4 de4 16.Qd8 Kd8 17.Nc3=) 12.Qe4+/- Qe7 13.Ng5 Kd7?? (better 13...Bf5 14.Qe7 Be7+/-) 14.Qb7+- (14.Qb7 Kd8 15.Qb8 Bc8 16.Nc3+-; 14.Qe6?! Qe6 15.Ne6 Ke6+/-) 1-0. DEFFM – Jozek, freechess.org, 2020.

5.c4 Qb6 6.Qc2 (6.d4 ab5 7.ab5 Ra1 8.Ba1 cb5 9.cb5 e4=) 6...Bd7 (6...ab5 7.ab5 Ra1 8.Ba1+=) 7.a5 Qd8 (7...Qc5 8.Ba3 Qd4 9.Bb2=) 8.b6 Nf6 9.e3 c5 10.Nc3 Nc6 11.h3 Nb4 12.Qb1 Be7 (12...Qe7 13.Nf3=) 13.Be2 Qc8 14.Bf3 (14.Nf3 Bc6=) 14...Bf5 15.e4 Bg6 16.Nge2 0-0 17.d3 h5 (17...Qe6 18.0-0=) 18.Qd1 Nh7 19.Ng3 h4 20.Bg4 Qd8 21.Nf5 Bg5 22.0-0 Nf6 23.Bf3 Qd7 24.Qe2 Nc6 25.Nd5 Bf5 26.Nf6 Bf6 27.ef5 Qf5 28.Be4 Qd7 29.Qh5 g6 30.Qh6 Qe7 31.Qd2 (31.Bd5 Nb4 32.Qg6 Bg7+/–) 31...Bg5= 32.Qc3 Nd4 33.Rae1 Rab8 34.Bd5 Kh7 (34...Bf4 35.Bc1 Bc1 36.Qc1=) 35.f4 Bf6 (35...Bh6 36.Bc1=) 36.Re4+= Bg7 37.Qd2 (37.fe5 de5 38.Qe1 g5+=) 37...f5= 38.Ree1 Bh6 39.Qf2 Qf6 40.Bd4 (40.Bc1 Bf4 41.Bf4 ef4 42.Qf4 Rfe8=) 40...cd4 (40...ed4? 41.Re6 Qg7 42.Rfe1+-) 41.fe5 (41.Qe2 Bf4 42.Rf4 ef4 43.Qe7 Kh6 44.Bb7 Qe7 45.Re7 Kg5+=) 41...de5+= 42.Qf3 (42.Kh1 Be3 43.Qe2 Qe7+=) 42...Be3 43.Kh1 Qe7 44.Ra1 Rfc8 45.Ra2+= Bf4 46.Qe2 Qg5 47.Rf3 Rc5 48.Qe1 Qf6 49.Qb4 Qd6+= 50.Qe1 g5 51.Re2= Bg3 52.Rg3 hg3 53.Re5 Rf8 54.Re7 Kh8 55.Re6 Qb8 56.Re7 Qf4 57.Re6 g4 58.Re8 Rc8 59.Rc8 Rc8-+ 60.Bb7 Qe3 61.Qf1 Re8 62.Be4 Qf2 63.Qc1 f4 64.Qg1–/+ Kg7 65.b7 Rh8 66.Bf5 f3 67.Bg4 Re8 68.Qf2 gf2 69.Bf3 f1Q 70.Kh2 Qd3 71.c5 Qb5 72.c6 Qa5 (72...Qa5 73.g4 Qa3-+; 72...Qg5 73.g4 Qf4 74.Kg2 Re3 75.b8B Qf3 76.Kg1 Re1 77.Kh2 Qf2#) 0–1. Frenzel,Lothar – Diener,Rudolf, corr SOK–92–86, 1992.

5.c4 Be6 6.e4+=.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.Bc3 Qb6 9.Nf3 Bg4 10.Be2 Nf6 11.0-0 Be7 12.Na3 Nbd7 13.Nc4 Qc5 (13...Qc7 14.bc6 Qc6 15.Qa1=) 14.d4+= ed4 15.ed4 (15.Nd4? Be2 (worse 15...cb5 16.Bg4 bc4 17.Nf5+=) 16.Qe2 d5-/+) 15...Qh5 16.bc6 bc6 17.h3 Be6 (17...Bf3 18.Bf3 Qb5 19.Na5+/-) 18.Nfe5 Qf5 (18...Qh4 19.Nc6 Nd5 20.Bd2+/- (20.Ne7 Nc3 21.Nf5 Bf5 22.Nd6 Kd8+=)) 19.Nc6+- 1-0. onur604 (2320) - NahuelBarrios1 (2280), Casual Rapid game, 2021.

5.e3 ab5 6.ab5 Ra1 7.Ba1 cb5 8.Bb5 Nc6 9.c4 Bd7 (9...Qg5 10.g3=) 10.Nf3 f5 (10...e4 11.Nd4=) 11.0-0+= Nf6 12.d4 e4 13.Ng5 h6 14.Nh3 g5 15.Qa4 (15.d5 Ne5+=) 15...Bg7 16.Qa3 (16.Qb3 0-0+=) 16...Qc7 (16...d5 17.Nd2=) 17.d5+= Ne5 18.Be5 de5 19.d6 Qc8 20.Kh1 0-0 21.c5 Bb5 22.Qb3 Rf7 (22...Kh7 23.Qb5 Qc6 24.Nc3=) 23.Qb5+= Qc6 24.Na3 Nd7 Attacks the backward pawn on c5 25.Rc1 Rf8 26.Qc4 Kh7 27.Nb5 Ra8 (27...Rd8 28.Nc7 g4 29.Ne6+/-) 28.Nc7+/- Ra5?? Increases the pressure on the backward pawn (better 28...Rf8+/-) 29.Qf7+- Rc5 (29...Kh8 30.Ne6 Bf8 31.Nhg5 hg5 32.Qh5 Kg8 33.Qg6 Kh8 34.Ng5 Bd6 35.Nf7) 30.Rc5 (30.Qf5?! Kh8 31.Rd1 Nf6+/-) 30...Nc5 31.Ne8 (31.Qf5?! Kg8 32.Qg6 Nd3 33.Qe6 Kh7+=) 31...Qd7 (31...Qe8 32.Qe8 g4+-) 32.Nf6 (32.Nf6 Kh8 33.Qg8) 1-0. DEFFM – GuestBCRF, freechess.org, 2021.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nd7 8.Be2 Ngf6 9.Nf3 Be7 10.c4 0-0 11.0-0 Re8 12.d4 Qc7 13.Nc3 ed4 14.ed4 Nf8 15.Bd3 Ng6 (15...d5 16.c5=) 16.g3 (16.Bg6 fg6 17.d5 cb5 18.cb5 Bd8+=) 16...Bh3 17.Re1 h6 (17...Bg4 18.Kg2=) 18.Qc2 (18.Ne4 Ne4 19.Be4 f5=) 18...Nf8 (18...Qd7 19.Bg6 fg6 20.d5= (20.Qg6?? Bf5 21.Qe8 Ne8-+)) 19.bc6 bc6 20.d5 cd5 21.Nd5 Nd5 22.cd5 Qc2 23.Bc2 Bd7 24.Kg2 Bd8 25.Rb1 Nh7 26.Nd4 Bf6 27.Rb7 Bc8 (27...Nf8 28.Kf3+=) 28.Bh7 (28.Rb6 Ng5 29.h4 Ne4+-) 28...Kh7 29.Rf7 Re4 30.Nb5 Ba1 31.Nd6 Rd4 32.Nc8 Rd5 33.Ra7 Bd4 34.Ne7 Ba7 (34...Rd8 35.Nc6 Rd6 36.Nd4 Rd4 37.Kf3+-) 35.Nd5 g6 36.f4 h5 37.Kf3 Kg7 38.h3 Kf7 39.g4 hg4 40.hg4 Ke6 41.Ke4 Bb8 (41...Bc5 42.g5+-) 42.Nb4 Kf7 (42...Bc7 43.g5+-) 43.Nc6 Bc7 (43...Bd6 44.Ne5 Kg7 45.Kd5+-) 44.g5 Ke6?? (better 44...Kg7+-) 45.Ne5 1–0. onur604 (2320) – BeFairAndWin (2100), lichess.org, 2020.

5.e3 ab5 6.ab5 Ra1 7.Ba1 Be6 8.Nf3 Nf6 9.Be2 Be7 10.0-0 0-0 11.c4 (11.Nc3 Qb6=) 11...Nbd7 12.d4 ed4 (12...cb5 13.de5 de5 14.cb5=) 13.Nd4 c5 (13...Qc7!?=) 14.Ne6+= fe6 15.Bg4 Ng4 16.Qg4 Bf6 (better 16...e5!?+=) 17.Qe6+- Rf7 18.Bf6 Nf6 (18...Qf6 19.Qf6 Rf6 20.Nd2+-) 19.Rd1 Qd7 (19...Qe8 20.Qe8 (20.Qd6? Rd7-+; 20.Rd6?! Qe6 21.Re6 Rd7=+) 20...Ne8 21.Nc3+-) 20.Qd6 (20.Rd6?! Qe6 21.Re6 Rd7=+) 20...Qd6 (20...Qg4 21.Qb8 Rf8 22.Rd8 Rd8 23.Qd8 Kf7 24.Qd3+-) 21.Rd6 Ne4 22.Rd8 (22.Rd5 Nf6 23.Rd8 Rf8 24.Rf8 Kf8+-) 22...Rf8 23.Rf8 Kf8 24.f3 Nd6 25.Nd2 Kf7 26.Kf2 Kf6 (26...Ke7 27.f4+-) 27.e4 Ke5 (27...Ke7 28.f4+-) 28.Ke3 g5 (28...g6 29.f4 Ke6 30.g4+-) 29.g3 Nf7 (29...Ke6 30.f4+-) 30.f4 gf4 31.gf4 Ke6 32.e5 Nh6 33.Ne4 Ng4 (33...b6 34.Nf6 Kf5 35.h3+-) 34.Kd3 b6 (34...Nh2 35.Nc5 Kf5 36.Nb7+-) 35.h3 Nh6 36.Nc5! bc5 (36...Kf5 37.Nd7 Nf7 38.Nb6+-) 37.b6 Kd7 38.e6! (38.e6 Ke6 39.b7+-) 1–0. onur604 (2320) – mayukh123 (2010), lichess.org, 2020.

5.e3 Nf6 6.Nf3 Bd7 7.d4 ed4 (7...e4 8.Nfd2=+) 8.ed4 (8.Bd4 d5=) 8...Be7 9.Bd3 h6 (9...0-0 10.Na3=) 10.0-0 Be6 11.c4 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Bc3 Qa2 15.Nbd2 0-0 16.Qe2 Qa7 (16...Qa3!? 17.Ba1 Re8+=) 17.Ra1+/- Qb6 18.Ba5 Qa7 19.Bc3 (19.b6 Qa8+/-) 19...Qb6 20.Bf5 Bf5 21.Ba5 (21.Qe7 cb5 22.c5 Qc6 23.Qd6 Qd6 24.cd6 Nc6=) 21...Qa7 22.Qe7 cb5 23.cb5 d5?? (better 23...Bd3+/-) 24.Qf8!!+- Kf8 25.Bb4 Kg8 26.Ra7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 g6 6.d4+= Bg7 7.de5 de5 8.Qd8 Kd8 9.Nf3 f6 10.c4 (10.b6 Bf5+=) 10...ab5= 11.cb5 Ne7 12.Bc4 Nd7 (12...cb5 13.ab5 Ra1 14.Ba1=) 13.0-0 Nb6 14.Rd1 Kc7 15.Bb3 Bf5 (15...Rd8 16.Rd8 Kd8 17.Nc3+=) 16.Nc3 Rhd8 (16...Nbd5 17.a5+=) 17.bc6 bc6 (17...Kc6? 18.Rdc1 Nbc8 19.e4+-) 18.Rd8 Rd8 19.e4 Bg4 20.Ne1 Rd2 (better 20...f5!?+=) 21.Bc1+- Rd4 22.f3 Bc8 (22...Bd7!?+/-) 23.a5+- Na8 24.Ba3 Ng8?? (better 24...Bf8+-) 25.Bg8 Ba6 (25...Bh6 26.Bc1 Bd2 27.Bd2 Rd2 28.Bh7+-) 26.Bh7 Bh6 27.Bc1 g5 28.Nc2 (28.Be3 Rd8+-) 28...Rc4 (28...Rd8 29.Be3 Bf8 30.Na4+-) 29.Bd2 g4 (29...Bf8 30.Bg8 Rc5 31.Ne3+-) 30.Bh6 Rc3 31.Nb4 Bb5 (31...Bc8 32.fg4 Bg4 33.Bg7+-) 32.fg4 Kb7 (32...Rb3 33.Bf8 Kb7 34.a6 Ka7 35.Bc5 Kb8 36.Bd6 Ka7 37.Bg8+-) 33.Bg8 Nc7 (33...c5 34.Nd5 Rd3 35.Nf6+-) 34.Bd2 (34.Bd2 Rd3 35.Nd3 Bd3 36.Re1+-) 1-0. onur604 (2320) - mayukh123 (2160), lichess.org, 2020.

4.ab5 a5 5.Bb2 Bd6 6.Nf3+= Qf6 (6...Qe7 7.Na3 Ba3 8.Ba3+=) 7.e3 (7.Nc3 Qe6+/-) 7...Nh6 (7...Ne7 8.Na3 Qe6 9.Nc4+/-) 8.Bc4 (8.Nc3 Qe6+/-) 8...Nf5 9.d4 ed4 10.e4 Nh4 11.Nh4 Qh4 (11...Bb4 12.Kf1 Qh4 13.Qd4+/-) 12.Qd4 Bf8 (12...Qh6!?+/-) 13.Qd5 Be7?? (better 13...Qe7+-) 14.Bg7 Qg5 15.Qf7 (better 15.Qg5!? Bg5 16.Bh8 d6+-) 15...Kd8 16.0-0 (16.0-0 Re8 17.Bd4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.ab5 b6 5.Bb2 d6 6.e3 Nf6 7.Qf3 d5 8.Be5 Bb7 (8...Nbd7!? 9.Bg3 Nc5+/-) 9.Bf6+/- Qf6 10.Qf6 gf6 11.d4 (11.Nc3 Nd7+/-) 11...Be7 (11...Bb4 12.c3 Bd6 13.Nf3+/-) 12.Nf3 0-0 13.Nh4 Bb4 (13...Rc8!? 14.Kd2 a5+/-) 14.c3+- Be7 15.Nf5 Re8 16.Bd3 Nd7 (16...Bf8+-) 17.0-0 Nf8 18.c4 Ng6 (18...dc4 19.Bc4 Be4 20.Ng3+-) 19.c5! bc5 20.Ne7 Re7 21.dc5 Ne5 (21...Rc7 22.c6 Bc8 23.Nc3+-) 22.Bf5 Bc8 23.Bc8 Rc8 24.c6 Nc4 (24...Nc6 25.bc6 Rc6 26.Nd2+-) 25.Nc3 Nb6 26.Rfd1 Rd8 (26...Kf8 27.Nd5 Re5 28.Nb6 (28.Nf6?! Kg7 29.f4 Rb5+-) 28...ab6 29.Rdb1+-) 27.e4! Re5 (27...de4 28.Rd8 Pinning (28.Rd8 Deflection)) 28.f4 Re6 (28...Ree8 29.Nd5 Kf8 30.c7+-) 29.Nd5 Nd5 (29...Rf8 30.Ra7 Nc8+-) 30.ed5 Red6 31.Ra7 Rc8 32.b6 (32.b6 Rf8 33.b7+-) 1-0. DEFFM – GuestVGWF, freechess.org, 2021.

4.ab5 b6 5.e3 d5 6.Bb2 Bd6 7.Nf3 f6 (7...Nd7 8.c4 Ngf6 9.Nc3+=) 8.d4 (8.c4 Ne7 9.Nc3 Bb7+-) 8...e4 (8...Nd7 9.c4 Ne7 10.cd5+-) 9.Nfd2+- Ne7 10.c4 0-0 11.cd5 Nd5 (11...f5 12.Nc3 a5 13.ba6 Na6 14.Qb3+-) 12.Bc4 Bb4 13.0-0 Bd2 (13...Be6 14.Qb3 a5 15.ba6+-) 14.Nd2 (worse 14.Qd2 f5+-) 14...Be6 15.Ne4 Bf7 (15...f5 16.Nc3 Bf7+-) 16.Ba3 Re8 (16...Ne7 17.Bf7 Rf7+-) 17.Nd6 Re7 (17...Be6 18.Qf3 Ne3 19.fe3+-) 18.Qb3 Rd7 (18...a5+-) 19.Bd5 Rd6 20.Bf7 Kh8 21.Bd6 Qd6 22.Qd5 (22.Qd5 Qd5 23.Bd5+-) 1-0. DEFFM – GuestYYYD, freechess.org, 2021.

4.ab5 Ne7 5.Bb2 d6 6.e3 b6? (better 6...Nd7!?=) 7.Qf3+/- d5 8.Be5 Nd7 9.Bb2 Bb7 10.Ne2 Nc5 (10...a5 11.ba6! Ba6 12.Nbc3+/-) 11.Nd4+- Ne4 12.Bd3 Ng6 13.0-0 Qf6 (13...Ne5!? 14.Qe2 Nd3 15.Qd3 Qc8+-) 14.Qf6 Nf6 15.Nf5 Bc8 16.Bf6 gf6 17.Nc3 Be6 18.e4 d4 (18...Nf4 19.Nd5 Bd5 20.ed5 Nd3 21.cd3+-) 19.Nd5 Bd5 20.ed5 Ne5 21.Be4 (21.Nd4?! Nd3 22.cd3 Rg8 23.Rfe1 Kd7+-) 21...Rc8 (21...Bb4 22.d6 Rd8 23.Ra7 Bd6 24.Nd4+-) 22.d6 Nd7 (22...Kd8+-) 23.Ra7 h5 (23...Kd8 24.Re1 Ne5+-) 24.Bc6 Rd8 25.Re1 (25.Re1 Be7 26.de7 d3 27.Nd6) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.ab5 f6? 5.e4+- Ne7 (5...d5 6.ed5 Nd7 7.Nf3+-) 6.Qh5 (6.Nc3 d5 7.Qh5 g6+-) 6...g6 7.Qf3 Bg7 8.Bc4 d6 9.Ne2 Qd7 (9...Nd7!? 10.0-0 Nc5+-) 10.0-0+- Qg4 (10...Qc7 11.d3+-) 11.Qd3 h5? (11...Be6 12.Na3 0-0 13.Qd6 Bc4 14.Nc4+-) 12.f3 (12.Ba3!? d5 13.ed5 Nd7+-) 12...Qd7 13.Ba3 h4 14.Bd6 h3 15.g3 f5 (15...Qd8 16.Qa3+-) 16.Nbc3 Bh6 (16...Qd8+-) 17.f4 ef4 (17...Qd8 18.fe5 a5 19.Nd4+-) 18.Qd4 Rf8 (18...Rh7 19.Nf4 Qd8 20.ef5+-) 19.Nf4 Bf4 (19...Bg7 20.e5 Qd8 21.Ra7 Ra7 22.Qa7+-) 20.Rf4 b6 (20...Kd8 21.ef5 Nec6 22.bc6 Nc6 23.fg6 Rf4 24.Qf4 Qg7+-) 21.ef5 Rf5 22.Qh8 Rf8 (22...Ng8 23.Qg8 Rf8 24.Qf8) 1–0. GuestHQLF – GuestCXQX, freechess.org, 2020.

4.ab5 Nf6 5.Bb2 d6 6.Nf3 Be6 7.e3 Qb6 8.Ng5 Bd7 9.c4 Be7 10.Be2 d5 (10...h6 11.Nf3=) 11.0-0 (11.Be5 h6 12.Nf3 dc4 13.Bc4 0-0+/-) 11...dc4 (11...e4 12.d3 h6=+) 12.Bc4+/- (worse 12.Be5 Qb5 13.Nf3 Nc6=+) 12...0-0 (12...Bb5 13.Bf7 Kd7 14.Re1+/-) 13.Qb3 (13.Be5?! Qc5 14.Bf7 Rf7+=) 13...Be6? (better 13...Be8+/-) 14.Be6+- (14.Ne6?! fe6 15.Be6 Kh8 16.Be5 Nbd7+-) 14...fe6 15.Ne6 (15.Be5?! Nd5 16.Bd4 Qd6+-; 15.Qe6?! Qe6 16.Ne6 Rc8 17.Be5 Nbd7+-) 15...Rc8 (15...Nbd7+-) 16.Ng5 Kh8 (16...Rc4 17.Qc4 Kh8 18.Nf7 Kg8 19.Nh6 Kh8 20.Qg8 Ng8 21.Nf7) 17.Nf7 Kg8 18.Nh6 Kh8 19.Qg8!! Ng8 (19...Rg8 20.Nf7 Mate attack; 19...Ng8 20.Nf7 Mate attack) 20.Nf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.ab5 Nf6 5.e3 d5 6.Bb2 Bd6 7.Nf3 Qe7 8.b6 a6 9.Nc3 0-0 (better 9...Nbd7!?=+) 10.Nb5+= Nc6 11.Nd6 Qd6 12.Be2 (better 12.Ba3 Qd8 13.Bf8 Kf8 14.Qb1+/-) 12...Re8=+ Black plans d4 13.c4 (13.0-0 Qd8=+) 13...d4 (13...Qb4 14.Qc2-/+) 14.Qc2 d3 15.Qd3 (15.Qd3 e4 Double attack (15...e4 Decoy); 15.Bd3 Nb4 Double attack (15...Nb4 Decoy)) 15...Qd3 16.Bd3 e4 17.Bf6 gf6 18.Be4 Re4 19.d4 Bd7 20.c5 Bg4 21.Nd2 Re7 22.0-0 Rd8 23.h3 Bf5 (23...Be6 24.Kh2=) 24.Rfd1 Nd4 (better 24...Bd3!?=) 25.ed4+/- Rd4 26.Nf3 Rd1 27.Rd1 Be4 (27...Bd7 28.Nd4+/-) 28.Rd8 Kg7 29.Nd4 Bg6 30.h4 Re4? (30...h6 31.f3 Bh7 32.Rc8+-) 31.g3 (better 31.c6 Re1 32.Kh2 bc6 33.b7+- (33.Nc6?! Rb1+/-)) 31...Re1 32.Kg2 Rd1? (better 32...Re7+/-) 33.Ne6!!+- fe6 34.Rd1 Bf5 (34...Be8+-) 35.Rd7 Kg6 36.Rb7 1-0. InTrollingWeTrust (2445) - zumpili (2415), Rated Bullet game, lichess.org, 2021. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5)

5.Bb2 a5 6.Be5 Qe7 7.Nf3+- b6 8.e3 Bb7 9.c4 (better 9.Nc3 Qd8 10.Bd4+-) 9...Bf3? (better 9...d5+/-) 10.Qf3+- Qe5 11.Qa8 (11.d4 Bb4 12.Kd1 Qd6 13.Qa8 Nf6+-) 11...Bd6? (11...Qa1 12.Qb8 Ke7+-) 12.Nc3 Ne7 (12...Bb4 13.f4 Qd6 14.Qb7+-) 13.f4 (13.Qb7 0-0 14.Qb6 Bb4+-) 13...Qc5 (13...Qe6 14.Qb7 Bf4 15.Kd1+-) 14.Ne4 (14.Qb7 Qc7 15.Qc7 Bc7+-) 14...Qc7 15.c5! Bc5 (15...bc5 16.Nd6 Double attack (16.Ra5 Deflection); 15...Bc5 16.Nc5 Combination) 16.Nc5 Qc5 (16...bc5 17.Qa5 Qc8+-) 17.Qb8 Nc8 18.Be2 0-0 19.0-0 Nd6 (19...Qd6 20.Qd6 Nd6 21.Rfc1+-) 20.d4 Qd5 (20...Qc2 21.Qd6 Qe2 22.Qb6 Qe3 23.Kh1+-) 21.Qb6 Ra8 (21...Re8 22.Ra5 Ne4 23.Rfa1+-) 22.Bf3 Qb5 (22...Ne4+-) 23.Qb5 (23.Qb5 Nb5 24.Ba8+-) 1-0. DEFFM – GuestPLXX, freechess.org, 2021.

5.Bb2 ab5?? 6.Ra8+- b6 (6...Nc6+-) 7.Rb8 Bc5 (7...Qc7 8.Ra8 Qc6 9.Ra7+-) 8.Be5 d6 (8...Nf6 9.e3 0-0+-) 9.Bg7 Qc7 10.Ra8 Ne7 11.Bh8 d5 12.e3 Nf5 13.Qg4 (13.Qg4 Bd4 14.Bb5 Ke7 15.ed4 Ke6 16.Qe2 Ne3 17.Qe3 Kf5 18.Bd3 Kg4 19.Qh3 Kg5 20.Nf3 Kf4 21.Qg3) 1–0. GuestYQJX – GuestPKPW, freechess.org, 2020.

5.Bb2 b6 6.Be5 d6 7.Bb2 (7.Bd4 Nf6+-) 7...Bb7 (7...a5 8.Nf3+/-) 8.e3 (8.Nf3 a5+-) 8...ab5 (8...a5!?+/-) 9.Bb5 Bc6? (better 9...Nd7 10.Ra8 Ba8+-) 10.Ra8 Nd7 (10...Bb5 11.Nf3 Bc6+-) 11.Rd8 Kd8 12.Bc6 Kc7 13.Bd7 Kd7 14.Bg7! Bg7 15.Qg4 Ke7 16.Qg7 Nf6 17.Qh8 1-0. DEFFM – GuestLYBC, freechess.org, 2021.

5.Bb2 d6 6.e3 Nd7 7.Nf3 Qe7 8.Be2 h6 9.0-0 e4 10.Nd4 Nc5 11.c4 Ne6 (11...Qg5 12.f3+/-) 12.f3 Nd4 (12...Nc5 13.fe4 Ne4 14.Nc3 Nc3 15.Bc3+/- (15.dc3?! Nf6=)) 13.Bd4+- (13.ed4?! d5+/-) 13...ef3 14.Bf3 Nf6 (14...Rb8 15.Nc3 Nf6 16.ba6 ba6 17.Bc6 Nd7 18.Qh5+-) 15.ba6 Ra6 16.Ra6 ba6 17.Bc6 Bd7 18.Qa4 Bc6 19.Qc6 Qd7 (19...Nd7 20.Nc3 (20.Qa6?! f6+-) 20...Qd8 21.Nd5+- (21.Qa6?! Be7+-)) 20.Qa8 (20.Qa6?! Be7+-) 20...Ke7 (20...Qd8 21.Qd8 Kd8 22.Rf6 gf6 23.Bf6 Kd7 24.Bh8 Ke6+-) 21.Nc3 g6 (21...Qe6 22.Bf6 gf6 23.Nd5 Qd5 24.Qd5 f5 25.Qf5 Rg8 26.Qe4 Kd8 27.Rf7 Rg2 28.Kg2 d5 29.Qd5 Bd6 30.Qd6 Ke8 31.Qe7) 22.Bf6 Ke6 23.Qe4 (23.Qd5) 1-0. DEFFM – GuestJJQG, freechess.org, 2021.

5.Bb2 d6 6.e3 Nf6 7.c4 Nbd7 8.Nc3 g6 9.d3 Bg7 10.Be2 0-0 11.Bf3 Re8 12.ba6 Ra6 13.Ra6 ba6 14.Nge2 Nc5 Black intends e4 15.Bc6 Bd7 16.Bd7 Nfd7 17.0-0 e4 18.d4 Nd3 19.Ba3 Qc7 20.Ne4! Re4 21.Qd3 Nf6 22.Ng3 Rh4 (22...Re8 23.Ra1+/–) 23.h3 Qd7 24.f3 Nh5 25.Nh5 Rh5 26.Qe4 Rg5? (26...d5 27.Qf4 h6 28.c5+/–) 27.f4 (better is 27.Qf4 h6 28.Qd6+- (28.Bd6?! Rf5 29.Qg3 Qe6+/–)) 27...Rg3?? (better is 27...Ra5 28.Qd3 Qc7+/–) 28.Kh2 Qa4 (28...d5 29.cd5 f5 30.Qd3 Rg2 31.Kg2 Qd5 32.Kg3+-) 29.Bd6 (29.Qa8 Qe8 30.Qe8 Bf8 31.Bd6 Rh3 32.Kh3 h5 33.Qf8 Kh7 34.Qf7 Kh6 35.Bf8) 29...Qd7 (29...h6 30.Rc1 Rg2 31.Kg2 Qb3+-) 30.Qa8 (30.Qa8 Qd8 31.Qd8 Bf8 32.Qf8) 1–0. Biskup,Izabela (1800) – Kirszenstein,Anna, DMO Poland, 2007.

5.Bb2 d6 6.Nf3 Bd7 (6...f5 7.c4=) 7.c4 (7.e4 Qb6 8.Nc3 Nf6+=) 7...a5 (7...Be6 8.e4+=) 8.e3 b6 (8...Nf6 9.Be2+=) 9.Nc3 Be6 (9...Nf6 10.Be2+/–) 10.Na4 (10.d4 Nd7+/–) 10...d5 (10...Nd7 11.d3+=) 11.Be5 (11.cd5 Bg4+/–) 11...dc4 (11...Nd7!?+/–) 12.Rc1+- Nd7 13.Bd4 (13.Bc4 Bc4 14.Rc4 Rc8+-) 13...Ngf6 (13...Rc8!? 14.Nb2 c3 15.Rc3 Ngf6+/–) 14.Bc4+- Bc4 15.Rc4 Nd5 (15...Bc5 16.Bc5 Nc5 17.Nc5 bc5 18.Qa4+-) 16.0-0 Bb4 (16...Ne7 17.Qc2+-) 17.Bg7 Rg8 18.Re4 (18.Bd4 Be7+-) 18...Be7 19.Bd4 (19.Be5 Ne5 20.Ne5 Qd6+-) 19...f5 (19...Qc7 20.Ne5 N7f6 21.Qf3+-) 20.Re6 Kf7 (20...Rg6 21.Rc6+-) 21.Rh6 (21.Rc6 N7f6+-) 21...N5f6 22.Ne5 Kg7?? 23.Nc6+- Qe8 24.Rh3 Kf8 25.Nb6 Nb6 26.Bb6 Bb4 27.Bd4 Qe6 28.Bf6 Qf6 29.Rh7 Rg5?? 30.Qf3 Rg7 31.Rg7 Kg7 32.b6 Bd6 33.b7 Ra6 34.d4 a4 35.b8Q Bb8 36.Nb8 Ra5 37.Nd7 Qd6 38.Qg3 Qg3 39.hg3 a3 40.Ra1 a2 41.f4 Kf7 42.Kf2 Ke7 43.Nc5 Kd6 44.Kf3 Ra3 45.Ke2 (45…Kd5 46.g4 fg4 47.f5+-; better is 45.g4 fg4 46.Kg4 Re3 47.Ra2 Re1+-) 1–0. IOM – ron11, Caissa's Web, 2004.

5.Bb2 Bd6 6.e3 Ne7 7.Nf3 Ng6 (7...f6 8.d4 ed4 9.Qd4+-) 8.Bd3 0-0 (better 8...Be7 9.h4 d6+-) 9.Bg6 (better 9.h4!? h6 10.h5+-) 9...hg6 (9...fg6 10.Nc3 (10.Be5? Be5 11.Ne5 Qf6-+) 10...Bc7 11.Qb1+-) 10.Ne5 Qg5 11.Qg4 Qf6?? (better 11...Qg4 12.Ng4 Bc5+-) 12.Nc4+- Qe6 (12...Be5 13.Be5 d6 14.Bf6 Bg4 15.Nb6 gf6 16.Na8+-) 13.Qd4 (13.Qd4 Be5 14.Qe5 Qe5 15.Be5+-) 1–0. GuestZSJP – GuestYKPQ, freechess.org, 2020.

5.e3 Bc5 6.Bb2 d6? (6...Qc7 7.d4 ed4 8.Bd4+/–) 7.Nf3?? (better is 7.d4 ed4 8.ed4 (8.Bd4?! Bd4 9.Qd4 Qd4 10.ed4 Nf6+=) 8...Bb4 9.c3+-) 7...Bg4 (7...Qc7 8.d4 ed4 9.ed4 Bb4 10.c3+/–) 8.Be2 (8.d4 Bb4 9.c3+-) 8...Nd7? (8...a6 9.Bc3 Bf3 10.gf3+/–) 9.0-0?? (9.d4!? Bb4 10.c3 e4+-) 9...d5?? (better is 9...Bf3!? 10.Bf3 Qb5=) 10.Nc3 (10.Ne5 Ne5 11.Be5 Be2 12.Qe2 Qg6+-) 10...d4 (10...Bf3!? 11.Bf3 Ngf6 12.Nd5 Nd5 13.Bd5 0-0+-) 11.Na4 Qc7 (11...Qf6 12.ed4 Bf3 13.Nc5 Nc5 14.de5+- (14.gf3?! ed4 15.b6 a6=; 14.Bf3?! ed4 15.Re1 Ne7+-; 14.dc5?! Be2 15.Qe2 Qe7+-)) 12.Nc5 Bf3 13.Bf3 (13.gf3 Nc5 14.f4 ef4 15.ed4 Ne4+-) 13...Nc5 14.ed4 ed4 15.Bd4 0-0-0 (15...Ne6 16.b6 Qd8 17.Bb7 Nd4 18.Re1 Ne7 19.Ba8 ab6+-) 16.Bg7 Ne7 (16...Nh6 17.d4 Ne6 18.Bh8+-) 17.Bh8 Rh8 18.Ra7 Nf5 (18...Ng6 19.Qa1 Rf8 20.Bg4 Ne6 21.Qd4+-) 19.d4 (better is 19.Ra8 Kd7 20.Rh8 Qf4+-) 19...Qb6 (19...Nd7 20.Bb7 Kd8+-) 20.Ra8 (20…Kc7 21.dc5 Qc5 22.Rh8+-) 1–0. IOM – FREEDOM4FISCHER, Caissa's Web, 2004.

5.e3 Bc5 6.Nf3 d6?? (better 6...e4 7.d4 Be7=) 7.d4+- ed4 8.ed4 (8.Nd4?! Nf6+=) 8...Bb4 9.c3 Ba5 10.Qa4 Bd7 (10...Bf5 11.Nfd2 Bb1 12.Nb1 Bc3 13.Nc3 Nf6+-) 11.Qa5 (11.Qa5 Qa5 12.Ra5+-) 1–0. onur604 (2275) – amit6109 (2200), lichess.org, 2020.

5.e3 d5 6.Bb2 Bd6 7.f4 f6 (better 7...Nd7!?=) 8.fe5+/- fe5 9.Be5! Be5 10.Qh5 Kf8 (10...Qg6 11.Qe5 Ne7 12.Nf3+/-) 11.Qe5 Nf6 12.Nf3 Nbd7 13.Qf4 Qc5 14.Bd3 b6 (14...Ke8 15.0-0+-) 15.Nd4 Kg8 16.0-0 Bb7 (16...Nf8 17.Qg3 Ne4 18.Be4 de4 19.Nc3+-) 17.Qg3 Nh5 (17...Qf8+-) 18.Qg4 Ndf6 19.Qe6 Kf8 20.Be2 Bc8 (20...Qe7 21.Bh5 Qe6 22.Ne6 Ke7 23.Ng7+-) 21.Qe5 g6 (21...Ng3 22.Qg3 h5+-) 22.Bh5 (22.Bh5 Qe7 23.Rf6 Ke8 24.Ne6 gh5 25.Ng7 Kd8 26.Rd6 Bd7 27.Ne6 Kc8 28.Qh8 Kb7 29.Rb6 Kb6 30.Qa8 Bb5 31.Qb8 Qb7 32.Qd8 Kc6 33.Nd4 Kc5 34.Nb3 Kc6 35.Na5 Kc5 36.d4 Kb4 37.Qd6) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.e3 Nf6 6.Bb2 d6 7.d4 ed4? 8.Bd4+/- Qc7?? (better 8...Qd8+/-) 9.b6!+- Qd7 (9...ab6 10.Ra8 Pinning (10.Ra8 Deflection)) 10.Ra7 Ra7 (10...Nc6 11.Ra8 Nd4 12.Qd4 Be7+-) 11.ba7 Nc6 12.a8Q Nd4 13.Qd4 Be7 14.Bb5! Qb5 (14...Qb5 15.Qc8 Deflection) 15.Qc8 Bd8 16.Nc3 0-0 17.Nb5 (17.Nb5 Ba5 18.Qcc3+-) 1-0. DEFFM – GuestYMSV, freechess.org, 2021.

5.e3 Nf6 6.Bb2 Be7 7.Be5+/- d6 (7...d5 8.Nc3 Nbd7 9.Bd4+/-) 8.Bd4+- Qd8 9.Nf3 Bg4 10.Be2 b6 (10...0-0 11.h3 Be6 12.Nc3+-) 11.0-0 Nbd7 12.Ng5 h6? (better 12...Be2 13.Qe2 0-0+-) 13.Bg4 hg5 14.Nc3 (14.Bf3 Rc8 15.Ra7 d5+-) 14...Ng4 15.Qg4 Qc7 (15...Bf6+-) 16.Nd5 Qb8 (16...Qc2 17.Rfc1 f5 18.Rc2 fg4 19.Bg7 Rg8 20.Nc7 Kf7 21.Na8 Ra8+-) 17.Bg7 (better 17.Qe4 Ne5 18.f4 gf4 19.ef4+-) 17...Rh7 (17...Rg8 18.Qe4 Ne5 19.Nb6 Qb6 20.Qa8 Qd8 21.Ra7 Rg7+-) 18.Qe4 Ne5 19.Qh7 Qb7 20.Nb6! Qb6 (20...ab6 21.Qg8 Decoy; 20...Qb6 21.Qg8 Decoy) 21.Qg8 (21.Qg8 Kd7 22.Qa8+-) 1-0. DEFFM – GuestJRXF, freechess.org, 2021.

5.Bb2 Nf6 6.Be5 Bf2 7.Kf2 Ng4 8.Ke1 Ne5 9.Nf3 Nf3 10.ef3 Qh4 11.g3 Qd4 12.Qe2 Kd8 13.Qd3?? (better 13.Ra3+=) 13...Re8 14.Kd1 (14.Be2 Qa1 15.Kf2-+) 14...Qa1 15.Qh7 (15.Qb3-+) 15…Qb1 0-1. Sonata2 (2175) - polishmozart (2265), Rated Bullet game, lichess.org, 2015.

5.e3 Bb6 6.Bb2 d6 7.Nf3 Nd7 8.d4 e4 9.Nfd2 f5 10.Bc4 Ngf6 11.0-0 d5 12.Bb3 Ba5 (12...Bc7 13.Ba3=) 13.c4 Nb6? (13...dc4 14.Nc4 Bc7+=) 14.cd5?? (better 14.Ra5 Nc4 15.Ra2+- (15.Nc4?! dc4 16.b6 cb3 17.Qb3 Qd7+-)) 14...Nfd5?? (better 14...Nbd5 15.Bd5 Nd5 16.Ne4 fe4 17.Ra5 0-0+=) 15.Ra5+- Be6 16.Qh5 g6 17.Qh6 Qd7 18.Rc1 Qf7 19.Ba3 Rc8 (19...Rg8 20.Bd5 Bd5 21.Nc3+-) 20.Bc5 Bd7 (20...Nb4 21.Be6 Qe6 22.Qg7+-) 21.Ra7 Bb5 (21...Be6+-) 22.Nc3 1-0. DEFFM – GuestVXHM, freechess.org, 2021.

5.e3 d5=.

5.e3 Qf6? 6.Nc3+- b6? (better 6...Qe7 7.Nd5 Qd6+-) 7.Nd5+- Qd6 8.Qf3 f6? (8...Nc6 9.bc6 dc6+-) 9.Nc3 Ne7 (9...Nc6 10.Ne4 Qd5+-) 10.Qa8 0-0 (10...f5 11.Bc4+-) 11.Bc4 Kh8 12.Ne4 Qc7 13.Ra7 Qa7 14.Qa7 f5 15.Nc5 d5 16.Qe7 Rg8 (16...Be6 17.Qf8 Bg8 18.Ne6 dc4 19.Qg7) 17.Bd5 (17.Bd5 Na6 18.Bg8 f4 19.Bd5 h6 20.Qe8 Kh7 21.Bg8 Kh8 22.Bf7 Kh7 23.Qg8) 1–0. GuestXFHR – GuestSRBD, freechess.org, 2020.

5.e3 h6 6.d4 Bb6? (better 6...ed4 7.ed4 Be7+=) 7.de5+- Ne7 8.Ba3 0-0 9.Nf3 Re8 (9...d5 10.ed6 Nf5 11.Nc3+-) 10.Bd3 Nd5?! (10...Ba5 11.c3 a6+-) 11.0-0 Re6 (11...Ba5 12.Bc4 Nc7 13.Bb2+-) 12.Bc4 Ne7 13.Be6 (13.Nc3 Qe8+-) 13...de6 14.Qd8 Bd8 15.Nd4 (15.Rd1 Nd7+-) 15...Nf5 16.Nd2 Nd4 17.ed4 Bg5 (17...a5 18.ba6! b6 19.Bb4+-) 18.Ne4 a6 (18...a5 19.Ng5 hg5 20.Be7+-) 19.Ng5 hg5 20.Be7 Nd7 21.ba6 Ra6 (21...ba6 22.Bg5 f6 23.ef6 gf6 24.Bf4+-) 22.Bg5 (better 22.Ra6 ba6 23.Rb1 f6 24.ef6 gf6 25.Bf6 Nf6+-) 22...Ra1 (22...Rc6+-) 23.Ra1 Nb6 24.f3 (better 24.Ra3 Kh7 25.Rc3 Bd7+-) 24...Bd7 (24...Kh7 25.h4 Kg6 26.g4+-) 25.Rb1 Nc4 (25...Nd5 26.c4 Nc3 27.Rb7+-) 26.Rb7 Bc6 (26...Be8 27.Rb8 Kf8 28.Kf2+-) 27.Rc7 Bd5 (27...Bb5 28.Kf2+-) 28.h4 Na3 (28...Nb6 29.h5+-) 29.h5 Nb5 (29...Kh8 30.Rc8 Kh7 31.Kf2+-) 30.Rc8 Kh7 31.c4 Bf3 (31...Nd4 32.cd5 ed5+-) 32.cb5 Bh5 33.b6 f6 34.b7 fg5 (34...Bg6 35.b8Q Bb1 36.ef6 Ba2 37.fg7 Kg7 38.Qe5 Kg6 39.Rh8 Bd5 40.Qf6) 35.b8Q (35.b8Q g4 36.Rh8 Kg6 37.Qf8 Kg5 38.Rh7 Bg6 39.Rg7 Kh5 40.Qf6 g3 41.Qg6 Kh4 42.Rh7) 1-0. DEFFM – ADITYAREDDY, freechess.org, 2021.

5.e4 Nf6 6.Nc3 0-0 7.Bb2 d6 8.h3 Be6 9.Nf3 Qb6 10.Qe2 Nbd7 11.Ng5 Rfe8 12.Ne6 Re6 13.Nd5 (better is 13.Qf3!?+=) 13...Nd5+= 14.ed5 Rf6 15.f3 Re8 16.0-0-0? (16.Bc3 Qc7 17.Qe4+=) 16...e4?? (better is 16...Ra8!?-+) 17.Re1 (better is 17.d4!? Bb4 18.fe4=) 17...Rg6 18.fe4 Bf2 19.Rd1 f5 20.d4 Bh4 (20...Bg3 21.e5 de5 22.de5 Be5+=) 21.Qh5?? (better is 21.e5+=) 21...Bg5–/+ 22.Kb1 Nf6 23.Qe2 Re4 24.Qc4 Be3 d4 draws heavy fire 25.Qc8 Kf7 26.Qf5= Rf4?? 27.Qe6+- Kf8 28.Qe3 Re4 29.Qf3 Kg8 30.Bd3 Re8 31.Bg6 hg6 32.Rde1 Rc8 33.Qe3 Nd5 34.Qe6 Kh8 35.Qc8 Kh7 36.Qc4 Nf4 37.Rhg1 d5 38.Qc5 Qa5 39.b6 black resigned.. . . (39.b6 Qb6 40.Qb6 ab6 41.Re5+-) 1–0. islanderfan (2060) – langelli (2055), net–chess.com, 2012.

5.Bb2 Qc7 6.e3 Be6 7.Nf3 Nd7 8.Be2 Bb4 9.0-0 Bd6 10.h3 Ngf6 11.Na3 (11.Ba3 0-0=) 11...Nb6 12.Ng5 Bf5 13.d3 Na4 14.Qc1 0-0 15.c4 Nb2 16.Qb2 e4 17.de4 Bh2 18.Kh1 Be5 (18...de4?! 19.g3=; worse is 18...Ne4 19.Nf3 Bd6 20.cd5+=) 19.Qb4 Ba1 20.ef5 Be5 21.c5 Rfe8 22.f4? (better is 22.Bd3!?–/+) 22...Bf4-+ 23.Rf4 (23.b6 ab6 24.Nb5 Qe5 25.Qf4 Qf4 26.Rf4 Re3-+) 23...Re3 24.Bd1 (24.Rf2 Qg3 25.Rf3 Qg5-+) 24...Ra3! 0–1. CountFromHolland – ZorMaster, playchess.de, 2002.

5.Bb2 Nd7 6.e3 Ngf6 7.Nf3 White threatens to win material: Nf3xe5 7...Bd6 8.c4 (8.d4 Bb4 9.c3 Bd6+=) 8...b6 (8...e4!? must definitely be considered 9.Bf6 Qf6–/+ (worse is 9...gf6 10.Nd4=)) 9.cd5 Bb7 Black threatens to win material: Bb7xd5 (9...Nd5 10.e4 Nf4 11.g3+=) 10.Bc4 (10.Nc3 Nd5 11.Ne4 Be7+=) 10...Qc7 (10...e4 11.Nd4 Ne5 12.Qc2=) 11.d3+= Secures e4 11...Bb4 (11...Nd5 12.e4 Nf4 13.0-0+=) 12.Nbd2+/– 0-0 (12...e4 13.Nd4 Qe5 14.Rb1 Bd2 15.Qd2 Bd5 16.Ne2+=) 13.0-0 (13.Rc1 h6+/–) 13...Bd2 (13...Bd5 14.Qb3 Qc5 15.d4 Bc4 16.Nc4 (16.dc5?! is much weaker 16...Bb3 17.Nb3 bc5=) 16...ed4 17.Nd4+/–) 14.Nd2 (better is 14.Qd2!? Nd5 15.Rfc1+-) 14...Bd5+/– 15.Rc1 (15.Bd5 Nd5 16.Ne4 Nc5+=) 15...Qb7 (15...Qd6!?+= deserves consideration) 16.e4+/– Bc4 17.Nc4 (17.dc4?! a5=; 17.Rc4?! a6+=) 17...Qb8 (17...a6 18.Be5 Ne5 19.Ne5 ab5 20.Qb3+/–) 18.Ba3 (18.f4 ef4 19.Qf3 a6+/–) 18...Nc5 19.Ne3 (19.f4 ef4 20.d4 Nce4 21.Bf8 Kf8+/–) 19...Qd6 The backward pawn on d3 becomes a target 20.Rc3 (20.Bc5 bc5 21.Nf5 Qb6+=) 20...Rac8 21.Nf5 White threatens to win material: Nf5xd6 21...Qd7 (21...Qd8 22.Qc2 g6 23.Ne3+=) 22.Qb1 (22.Qc1 Nd5 23.Nh6 (23.Bc5 is clearly worse 23...Nc3 24.Qg5 f6–/+; 23.ed5?! Qf5 24.Bc5 Rc5+/–) 23...gh6 24.ed5 Qd5 25.Qh6+/–) 22...Rfd8 23.Rfc1 g6 24.Ne3 Qd4 (24...Ne6 25.Rc8 Rc8 26.Nc4=) 25.g4 h5 Black threatens to win material: h5xg4 26.g5 White threatens to win material: g5xf6 26...Ng4 Black threatens to win material: Ng4xe3 27.Bb2?? White lets it slip away (27.Bc5 Rc5 (27...bc5? 28.Nd1+-) 28.Rc5 bc5=) 27...Qd7 (better is 27...Ne3 and Black has prevailed 28.h3 Qd7-+) 28.Nd5+/– Kg7? (28...Rf8 29.h3 f6 30.Qa2+- (30.hg4?! Qg4 31.Kh2 Qh4 32.Kg1 fg5=)) 29.h3 (better is 29.f3!? and White can already relax 29...a6+-) 29...Nf2 30.Kf2 Qh3 31.Rh1 Qg4?? an oversight. But Black was lost anyway. 32.Qd1 Qg5+/– 33.Bc1 Qg4?? further deteriorates the position 34.Qg4+- hg4 35.Bh6 Kh8 36.Bg5 Kg7 37.Bf6 1–0. Frank,Detlev – Runge,Hans M, Pinneberg–ch op, 2001. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5 d5)

5.Bb2 e4 6.c4 Nf6 (6...dc4 7.Nc3 Nf6 8.Qc2=) 7.cd5 Qd5 (7...Nbd7 8.Nc3+=) 8.Nc3 Qf5 9.e3 Bd6 (9...Nbd7!?=) 10.b6+/- Bc5 (10...a6!? 11.Nb5 ab5 12.Ra8 0-0+/-) 11.Nb5+- Bb6?? (better 11...Na6 12.Ra6! ba6 13.Nc7 Kd8 14.Na8 ab6+/-) 12.Nd6 (12.Nd6 Kf8 13.Nf5 Bf5 14.d4+-) 1-0. onur604 (2320) - ssjtrent8 (1925), lichess.org, 2020.

5.Bb2 f6 6.e4 d4 (6...de4 7.Qh5 g6 8.Qe2=) 7.Bc4 Ne7 8.Ne2 a6 9.0-0 Bd7 (better 9...Qc7 10.d3 Bg4+=) 10.Nd4 (better 10.c3 dc3 11.Qb3+/-) 10...ed4-/+ 11.Qh5 Ng6 12.Bd4 Be7 13.Qd5 Rf8?? (better 13...Qc7=) 14.Qb7+- Bb5 (14...Bc8 15.Qa8 Qd4 16.Qb8 Qc4 17.ba6 Kd7+-) 15.Bb5 (15.Qa8?! Bc4 16.d3 Qd4+=) 15...ab5 16.Ra8 Bd6 (16...Qd4 17.Qb5 Qd7 18.Rb8 Bd8 19.Nc3+-) 17.Qb5 (17.Bc5! Qd7 18.Rb8 Bb8 19.Qb8 Kf7 20.Bf8 Nf8+-) 17...Kf7 (17...Ke7 18.Ra7 Nd7 19.Nc3+-) 18.Qb3 Ke8 (18...Ke7 19.Nc3 Bh2 20.Kh2 Qd4 21.Nd5 Kd7 22.f4+-) 19.Bc5! Bc5 (19...Be5 20.d4 Bc7 21.Nc3+-) 20.Rb8 Qb8 (20...Bd6 21.Qe6 Be7 22.Rd8 Kd8 23.f4 Bc5 24.Kh1+-) 21.Qb8 Kf7 22.Qb3 Ke8 23.Qb5 Kf7 24.Qc4 Ke8 25.Qc5 Ne7 26.Nc3 f5 27.Rb1 fe4 28.Rb8 (28.Rb7 Kf7 29.Qe7 Kg6 30.g4 Rf7 31.Qf7 Kg5 32.Qf5 Kh4 33.Qh5) 28...Kf7+- 29.Qc4 Kg6 30.Rf8 Nf5 (30...Nc6 31.Qe4 Kh6 32.Qf4 Kg6 33.Ne4 h5 34.Qd6 Kh7 35.Ng5) 31.Qe6 Kg5 (31...Kh5 32.Rf5 g5 33.Qf7 Kh4 34.Qh7 Kg4 35.h3) 32.Rf5 (32.Rf5 Kh4 33.Qe4) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.d4 e4 6.Bf4 =+.

5.e4 d4 6.Nf3= Nf6 7.Bc4 Bd6 8.d3 Be6 (8...0-0 9.0-0=) 9.Be6+= fe6 10.0-0 0-0 11.c3 Nbd7 12.Bb2 Ng4 13.h3 Qe8?? (better 13...dc3 14.Bc3 Ngf6+=) 14.hg4+- Qg6 15.cd4 Qg4 (15...ed4 16.Nd4 Qh6 17.g3+-) 16.Ne5 Qg5 (16...Qh4+-) 17.Nd7 Rf4 (17...Qb5 18.Nf8 Qb2 19.Ne6 Qa1 20.Qb3+-) 18.Ne5 (18.Bc1 Qh4 19.Bf4 Bf4+-) 18...Raf8 (18...Be5 19.de5 Rh4 20.g3+-) 19.g3 (better 19.Qb3 R4f6 20.Ra7 Be5 21.de5 Rg6+-) 19...Rh4 (19...Rf2 20.Rf2 Qg3 21.Rg2 Qe3 22.Kh2 Qh6 23.Kg3 Qf4 24.Kh3 Qh6 25.Kg3 Qf4 26.Kh3 Qh6 27.Kg3=) 20.Nd2 (better 20.Bc1 Rhf4 21.Bf4 Rf4+-) 20...Rh6 (20...Rf2 21.Kf2 Rh2 22.Kf3 Be5 23.de5 Rd2 24.Qb3 Qh5 25.Ke3 Qg5 26.Rf4 Qg3 27.Rf3 Qg5 28.Kd4+-) 21.Ndf3 Qh5 22.Nh4 Qg5 (22...Qe8 23.Bc1 Rhf6 24.Qb3+-) 23.Bc1 Rf4 (23...Qh5 24.Ng4 Qb5 25.Nh6 Kh8+-) 24.Bf4 (24.Bf4 Qf6 25.Bh6 gh6 26.Ra7+-) 1-0. black_bishop_88 (2505) - oztechnique (2385), lichess.org, 2020. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5)

5.e4 de4!? 6.Bb2 Nd7-/+.

6.Nf3 Qb6 7.Ne5 Qc5?? (better 7...f6 8.Nd3 Qb5+=) 8.Nd3+- Qc4 9.Bg7 Bc7 (9...Qb5 10.Bh8 Nd7 11.Bd4+-) 10.Bh8 (10.Nc3 d4 11.Ra4 Qe6 12.Rd4 Nf6 13.Bh8 Nbd7+-) 10...Bb6 (10...Qb5 11.Nc3 Qd7 12.e3+-) 11.Nc3 Bf5 (11...Ne7 12.Ra4 Qc7 13.e4+-) 12.Ra4 Qc5 (12...Qc8 13.Nd5 Nd7+-) 13.Nc5 Bc5 14.Nd5 (14.Nd5 Kd8 15.e4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 Qe7 7.Nc3 Nf6 8.e4 (8.b6 a6=) 8...d4 9.Ng5?? (better 9.Na4 Nbd7 10.Bd3=+) 9...dc3-+ 10.Bc3 h6 11.Nf3 Ne4 12.Bd3 (12.Bc4-+) 12...Nc3 13.dc3 e4 14.0-0 0-0 (better 14...ef3 15.Re1 Be6 16.Qf3-+) 15.Re1 (15.Be4 Bh2! (worse 15...Qe4 16.Qd6 Qc2 17.Rfe1-+) 16.Kh2 Qe4-+) 15...f5 16.Bc4 Kh8 17.Nd4 (17.h3-+) 17...Qg5 (17...Qc7!? 18.Ra4 Bh2 19.Kh1-+) 18.g3? (better 18.Ne6 Be6 19.Qd6-+) 18...Be5 (18...Rd8 19.Qe2-+) 19.Qb1 (19.Nf3 Qf6 20.Ne5 Qe5-+) 19...Bd4 (19...Qf6!? 20.Qd1-+) 20.cd4 Nd7 21.Qb4 Nb6?? (better 21...Rd8-+) 22.Qf8 Kh7 23.Bg8 Kg6 (23...Kh8 24.Bf7 Kh7 25.Qg8) 24.Qf7 1-0. black_bishop_88 (2510) - Casttuper (2395), lichess.org, 2020. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5 d5)

6.Nf3 Qe7 7.c4 dc4=+ 8.e4 Nf6 9.Bc4 0-0 (9...Ne4 10.Qe2 Ng5 11.Ne5=) 10.0-0 Bg4 11.d4 (11.h3 Bh5=+) 11...Ne4=+ 12.Re1 ed4?? (better 12...Ng5 13.de5 Bb4-/+) 13.Qd4+- Threatening mate... how? 13...Qf6 14.Re4 Threatening mate: Qxf6 (14.Qe4?! Bf3 15.Qd3 Qb2 16.Qd6 Bg4+/-) 14...Bf3 15.Qf6 gf6 16.gf3 (16.gf3 f5 17.Re3+-) 1-0. onur604 (2320) - DmitryMM (2090), lichess.org, 2020.

6.Nf3 Qe7 7.e3 Bd7 8.c4 dc4 9.Bc4 Nf6 10.0-0 0-0 11.d4 Bg4?? (better 11...e4 12.Ne5 Be6+=) 12.de5+- Be5 13.Be5 Nfd7 (13...Bf3 14.Bf6 Qf6 15.Qf3 Qa1 16.Qb7 Na6 17.ba6 Rab8+-) 14.Bd6 Bf3 (14...Qf6 15.Bf8 Nf8 16.Nbd2+-) 15.Be7 (15.Qf3?! Qd6 16.Qb7 Nb6+-) 15...Bd1 16.Bf8 Nf8 (16...Kf8 17.Rd1 Nb6 18.Be2+-) 17.Rd1 Nbd7 18.Bd5 Rb8 (18...Nc5 19.Nc3 Nfe6 20.Ne4+-) 19.Ra7 Nc5 20.Nc3 b6 (20...Nfe6 21.Ne4 Ne4 22.Be4+-) 21.Bf7 Kh8 22.Rd6 h6 23.Nd5 (better 23.f4 Kh7+-) 23...Rc8 24.Nb6 Ne4 25.Nc8 Nd6 (25...Ng5 26.Rd8 Kh7 27.Rf8 Ne6 28.Be6 Kg6 29.Bf5 Kh5 30.Rg7 Kh4 31.g3 Kh5 32.Bg4) 26.Nd6 Kh7 27.b6 h5 28.b7 Nd7 29.Be8 Nb8 30.Ra8 g6 (30...g5 31.Rb8 Kg7 32.Rd8 g4 33.b8Q g3 34.Qb2 Kh6 35.Qh8 Kg5 36.hg3 Kg4 37.Qh5) 31.Rb8 Kg7 1–0. GuestZNHB – GuestJMJF, freechess.org, 2020.

6.f4 Nd7 7.Nf3 f6 8.Nc3 Ne7 9.e4 d4 10.fe5 fe5 11.Ng5?? (11.Na4 Ng6=) 11...Nf6?? (11...dc3 12.Bc3 Ng6 13.Qg4-+) 12.Bc4? (better 12.Nb1=+) 12...dc3-+ 13.Bc3 Rf8 (13...Bg4 14.Qb1 Qb6 15.Qb3-/+) 14.0-0? (better 14.Nh7!? Nh7 15.Qh5 g6 16.Qh7-/+) 14...h6-+ 15.Ne6 Be6 (15...Ne4?? 16.Rf8 Kd7 17.Rd8) 16.Be6 Qc7 (better 16...Qb6!? 17.Kh1 Qb5 18.d3-+) 17.Kh1 Ng6 (17...Ne4 18.Qh5 Ng6 19.Qg6 Kd8 20.Rf8 Bf8 21.Qe4+-) 18.Qb1 Ne4 19.b6 (better 19.Ra7 Ra7 20.b6-+) 19...Qe7?? (better 19...Nc3!? 20.dc3 Qc6 21.Ra7-+) 20.Qb5 Attacking the isolated pawn on e5 (better 20.Ra7!? Rb8 21.Bf5-/+) 20...Kd8-+ 21.Ra7 (21.Bf5 Nc3 22.dc3 Nf4 23.Ra7 Rb8-+ (23...Rf5?? 24.Ra8 Bb8 25.Rb8)) 21...Rf1 (21...Qe6?? 22.Rf8 Nf8 23.Ra8 Ke7 24.Re8 Kf6 25.Re6 Ne6 26.Qd5 Nc3 27.dc3+-) 22.Qf1 Rb8 (22...Qe6?! 23.Ra8 Ke7 24.Qf3=) 23.Bf5 Nc3 (23...Qf6 24.Qf3 Ng5 25.Qf1-+) 24.Bg6 Nd5 25.Ra5 (25.Qb5 Qe6-+) 25...Nf6 Black prepares the advance e4 (25...Nb6!? 26.Qd3-+) 26.Qd3 Rc8 (26...Nd7 27.Be4 Nb6 28.g3-+) 27.h3? (better 27.Bf5 Nd7 28.Ra7-+) 27...e4-+ 28.Qd4 (28.Qb3-+) 28...Rc6?? (better 28...Rc2 29.g3 Qd7-+) 29.Ra8= Rc8 30.Ra7?? (30.Ra5 Rc2 31.g3 Rc6 32.Ra8 Rc8 33.Rc8 Kc8 34.Bf5 Kd8-+) 30...Rc6 31.Ra8 Rc8 32.Ra7 Qe5 (32...Rc2 33.g4-+) 33.Qe5 Be5 34.Rb7 (34.c3 Bg3 35.Kg1-+) 34...Rb8 (34...Rc2 35.g4 Rd2 36.Rf7-+) 35.Rg7? (better 35.Rb8 Bb8 36.Bf5-+) 35...Rb6 36.Kg1 (36.g4-+) 36...Bg3 37.Kf1 (37.Rb7 Rb7 38.Kf1 Rb1 39.Ke2 Re1) 37...Rb1 38.Ke2 Re1 0-1. black_bishop_88 (2515) - Andrija555666 (2415), lichess.org, 2020. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5)

6.f4 ef4!? 7.Nf3 Nf6-/+.

5.Bb2 Bd7 6.e3 Nf6 7.Nf3 a6 8.c4 ab5?? 9.Ra8+- Nc6 (9...bc4 10.Bc4 b5 11.Bb5 Bb5+-) 10.Rd8 Ke7 (10...Nd8 11.cb5 Be7+-) 11.Ra8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bb2 Nd7 6.d4 Qe7 (6...Ngf6 7.e3=) 7.Nc3 Ngf6 8.e4 ed4 (8...d5!? 9.Ba3 Qe6 10.ed5 Nd5 11.Nd5 Qd5 12.Bf8 Kf8=) 9.Qd4+/- Nc5 10.b6 a6 (10...Nfe4 11.Nd5 Qd8 12.Nc7 Ke7 13.Na8 ab6 14.Ne2+-) 11.Nf3 Nfd7?? (better 11...Qd8 12.Bb5 Bd7 13.Bd7 Nfd7+/-) 12.Nd5+- Qd8 (12...Qe4 13.Qe4 Ne4 14.Nc7 Kd8 15.Na8 d5+-) 13.Nc7 Ke7 14.Rd1 Nb6 (14...Nf6 15.e5 Nfe4 16.Na8+-) 15.e5 d5 (15...Be6 16.ed6 Kd7 17.Qc5 Na4+-) 16.Qc5 Kd7 17.e6! fe6 (17...fe6 18.Ne5 Mate attack) 18.Ne5 1-0. DEFFM – GuestRHWH, freechess.org, 2021.

5.Bb2 Nd7 6.e3 a6 7.Nf3 a5 (7...Ngf6 8.Be2=) 8.Bc4 b6 (8...e4 9.Nd4=) 9.Bd5 Ra7 10.d4 Ngf6 11.Bc6 e4 12.Nfd2 Be7 (12...d5!?+=) 13.Ne4+/- Ne4 14.Be4 Nf6 (14...0-0 15.0-0+/-) 15.Bc6+- Bd7 16.c4 0-0 (16...Bc6 17.bc6 d5 18.Qa4+/-) 17.0-0 Bf5 (17...Bc6 18.bc6 Ra8 19.d5+-) 18.Nd2 (18.Nc3 Bd7+-) 18...d5 19.cd5 Nd5?? (better 19...Bd3 20.Re1 Nd5+-) 20.e4 Be4 (20...Be6 21.ed5 Bd5 22.Qh5+-) 21.Ne4 Nf6 22.Nf6 Bf6 23.Qd3 Re7 (23...Qd6 24.Be4 g6 25.Rfd1+-) 24.Ba3 Qc7 25.Rac1 Qf4 26.g3 Qg5 27.Be7 Be7 28.Be4 h6 29.Rc6 Rb8 30.Rfc1 g6 (30...Bf8 31.R1c2+-) 31.Bg6! Kg7 (31...Qg6 32.Rg6) 32.Bf7! Kf7 Theme: Deflection from h7 33.Qh7 Qg7 34.Qf5 Kg8 35.Rg6 (35.Rg6 Kh8 36.Rg7 Kg7 37.Rc6 Ra8 38.Rg6 Kh8 39.Qf7 a4 40.Rh6) 1-0. DEFFM – GuestTYVF, freechess.org, 2020.

5.Bb2 f5 6.Nf3 Nf6 7.d4 (7.e3!?=) 7...e4=+ 8.Nfd2 Be7 (8...e3 9.fe3 d5 10.Nf3=+) 9.e3= 0-0 10.c4 Nbd7 11.Nc3 Rf7 12.Qb3 Nf8 13.g3 (13.Be2 Ne6+=) 13...g5 (13...Be6 14.d5 Bc8 15.Be2=) 14.h4 h6 (14...g4!?+=) 15.hg5 hg5 16.c5 d5 17.Ba3 Ng6 18.c6 bc6 19.bc6 Be6 20.Be7 (20.Ba6+/-) 20...Qe7? (better 20...Ne7!? 21.Bb5 a6 22.Ra6 Ra6 23.Ba6 Nc6+=) 21.Ba6+- f4 22.gf4 gf4 23.Bb7 Raf8 24.Qa3 (24.Ra7 Ng4 25.Nd5 Bd5 26.Qd5 fe3 27.fe3 Ne3=+) 24...Qc7? (24...Ng4 25.Qe7 (25.Qa7 fe3 26.fe3 Ne3-+) 25...Ne7 26.Nd1+/- (worse 26.Ra7 Nc6 27.Rg1 Na7 28.Bd5 fe3 29.fe3 Bd7=)) 25.0-0-0?? (25.Nb5!? Qe7 26.Rg1 Ng4 27.Qe7 Re7+-) 25...Rb8 (better 25...fe3!? 26.fe3 Ne7+=) 26.Rdg1+/- Kg7 27.Nb5 Qb6 28.Qa7 (better 28.Nd6 Rc7 29.Kd1+/-) 28...Qb5?? (28...Qa7 29.Na7 Rbb7 30.cb7 Rb7 31.ef4 Ra7=+) 29.Qb8+- Qb4 (29...Ng4 30.Qd6 Bf5+-) 30.Qf4 (30.Qh8!) 30...Qc3 31.Kd1 (better 31.Kb1 Qd3 32.Ka1 Qa3 33.Kb1 Qd3 34.Ka1 Qa3 35.Kb1 Qd3=) 31...Qa1?? (better 31...Ng4 32.Qf7 Kf7-+) 32.Ke2+- Bg4 33.Rg4 (better 33.Qg4 Ng4 34.Ra1 Rf2 35.Ke1 Rf7+-) 33...Qh1 34.Rg6! Kg6 35.Bc8 (better 35.c7 Qh5 36.f3+-) 35...Qh5+/- 36.f3 ef3 (36...Ra7 37.c7 Ra8 38.Be6+-) 37.Nf3+- (37.Qf3?! Rc7 38.Qh5 Nh5+/-) 37...Ne4? (better 37...Kg7 38.Bf5 Ne8 39.Qg3 Kh6+-) 38.Bg4 Rf4 39.Bh5 Kh5 40.ef4 Kg4 41.Ne5 Kf4 42.c7 Nd6 43.Nf7! Ke4?? (43...Nf7 44.c8Q Combination) 44.Nd6 Kd4 45.c8Q Ke5 46.Qc5 Kf4 47.Nb5 (47.Qd4 Kg5 48.Qg7 Kh5 49.Nf7 Kh4 50.Kf3 d4 51.Qg4) 47...Kg5 48.Nd4 Kf6 49.Qd5 (49.Qd6 Kg5 50.Nf3 Kf5 51.Nh4 Kg4 52.Qg6 Kf4 53.Nf3 d4 54.Qg5 Ke4 55.Qe5) 49...Kg7 (49...Ke7 50.Qe6 Kd8 51.Qd6 Ke8 52.Nc6 Kf7 53.Ne5 Ke8 54.Qe6 Kd8 55.Qd7) 50.Qe6 Kh8 (50...Kh7 51.Nf5 Kh8 52.Qe5 Kh7 53.Qg7) 51.Nf5 Kh7 52.Qf7 Kh8 53.Qg7 1-0. black_bishop_88 (2475) - Winnesa (2480), lichess.org, 2020. (=1.a3 c5 2.b4 cb4 3.ab4 e5 4.b5 d6)

5.e3 Nd7 6.d4 ed4 (6...Ngf6 7.c4=) 7.ed4+= Nb6 8.Bd3 Nf6 9.Nf3 Be7 10.0-0 0-0 11.c4 Bg4 12.Nbd2 Qc7 13.Bb2 Rfe8 14.Re1 a6 15.Qb3 ab5 16.Ra8 Ra8 17.Qb5 Na4 18.Ba1 Ra5?? (better 18...d5+=) 19.Re7!+- Qe7 (19...Qe7 20.Qa5 Deflection (20.Qa5 Overloading)) 20.Qa5 Bf3 (20...Qe8+-) 21.Nf3 h6 (21...Qe8 22.Bc2+-) 22.Qa4 g5 (22...Qd8 23.Qb4 Qc7 24.d5+-) 23.d5 g4 (23...Ne8 24.Bc3+-) 24.Nh4 Qe1 25.Bf1 Ne4 (25...g3 26.hg3 Qe8+-) 26.Qa8 Kh7 27.Qh8 1-0. DEFFM – GuestWMKM, freechess.org, 2021.

4.Bb2 cb5 5.e3 b4 6.Be5 Nc6 7.a5 (7.Nf3!?=) 7...Na5–/+ 8.Nf3 (better 8.Bd4 Qc7 9.Nf3=+) 8...b3?? (better 8...Nf6–/+) 9.Bd4 (better 9.Nc3 b2 10.Nd5 ba1R 11.Qa1+-) 9...bc2? (better 9...Qd8!?+-) 10.Qc2+- Qb3? (10...Qd8 11.Nc3 Nf6 12.Ra5 Qa5+-) 11.Qe4 Ne7 12.Ra5 d5 13.Qd3 Qd3 14.Bd3 b6 (14...Be6 15.Ra7 (15.Ba7?! Nc8+=) 15...Ra7 16.Ba7+-) 15.Bb6! Nc6 (15...ab6 16.Ra8 Pinning (16.Ra8 Deflection)) 16.Bb5 Bb4 (16...Bd7 17.Bc6 Bc6+-) 17.Bc6 Bd7 (17...Ke7 18.Ra1 Kd6 19.Ba8 ab6 20.Nc3+-) 18.Ba8 Ba5 19.Ba5 0-0 20.Bd5 Rb8 21.Nc3 h6 22.Ne5 Be6 23.Nc6 Re8 24.Na7 1–0. DEFFM – GuestNLMS, freechess.org, 2019.

4.e3 cb5 5.ab5 a6 6.Bb2 d6 7.d4 Nd7 8.d5 Ngf6 9.g3 Nd5?? (better is 9...Be7–/+) 10.Qd5+- Be7 11.ba6?? (11.Nc3 Nc5+-) 11...0-0?? (better is 11...Qb2 12.ab7 Qb7 13.Qb7 Bb7 14.Ra8 Ba8–/+) 12.ab7?? (better is 12.Qb5 Qb5 13.Bb5 ba6 14.Bc6+-) 12...Bb7 13.Qb7?? (13.Qb3 Ra1 14.Ba1 Bh1 15.Qb6 Nb6 16.c4-+) 13...Qb7 14.Ra8 Qa8 (better is 14...Ra8 15.Nd2 Qh1 16.Ne2-+) 15.f3 Qa2 16.Bc1 (16.Nc3 Qb2 17.Nge2 Nb6-+) 16...Qb1 17.Kd1 (17.Ne2 Qc2 18.Bd2 Rb8-+) 17...Rc8 18.Bd3 d5 19.Ne2 (19.Nh3 Nc5 20.Bf5 Nb3-+) 19...Nf6 (better is 19...e4!? 20.Bb5 Qc2 21.Ke1 ef3 22.Rf1 fe2 23.Be2-+) 20.e4 (20.Bf5 Rc7 21.g4 g6-+) 20...de4 21.fe4 Ba3 (better is 21...Ng4 22.Rf1 Ne3 23.Ke1 Bb4 24.Kf2 Nf1 25.Kf1-+) 22.Rg1 (22.Rf1-+) 22...Ng4 23.Kd2 Bb4 24.c3 Qa2 25.Bc2 Rd8 26.Ke1 Qc2 27.Kf1 Nh2 28.Kg2 Qe2 29.Kh1 Bc3 30.Bg5 Ng4 31.Bh4 Qh2 0–1. MasterofDisaster – lidl4, Live Game Caissa's Web, 2004.

4.e3 cb5 5.ab5 a6 6.Bb2 d6 7.f4 Nc6? (7...Nf6 8.Nf3 Be6 9.fe5 de5 10.Ne5+-) 8.fe5 (8.Nc3 Na5 9.Nf3 f6+-) 8...de5 (8...Ne5 9.Bd4 Qc7 10.Nf3+-) 9.Nf3 f6 (9...Nf6 10.Nc3 Nb4 11.ba6+-) 10.Bc4 (10.Nc3 Nb4 11.ba6 Bd7+-) 10...Bg4 (10...Na5 11.Bd3 Be6 12.Qe2+-) 11.0-0 (11.bc6 Qb2 12.Nc3 Qb6 13.cb7 Qb7+-) 11...Nge7? (11...e4 12.h3 Bh5+- (12...ef3? 13.hg4 fg2 14.Kg2+-)) 12.h3 (12.Nc3 Nd8+-) 12...Bf3 (12...Bh5 13.Nc3 Na5+-) 13.Qf3 (13.gf3?! Na5 14.Bd3 Nd5+-) 13...Nb4 (13...Rc8 14.bc6 Qc6 15.Bb3 Qf3 16.Rf3+-) 14.Ra4 Ng6 (14...a5 15.Na3 Rd8 16.Bb3+-) 15.ba6 Na6 (15...Ra6 16.Ba6 Na6 17.Nc3+-) 16.Qd5 Qc7 (16...Bd6 17.Nc3 0-0-0 18.Ba6 ba6 19.Qc4 Bc7 20.Ra6 Qb7+- (20...Qb2 21.Rb1 Ne7 22.Rb2 Kd7 23.Qb5 Nc6 24.Qc6 Ke7 25.Rb7 Kf8 26.Qc7 Rd7 27.Qd7 Kg8 28.Qg7)) 17.Bb5 Ke7 (17...Qc6 18.Bc6 bc6 19.Qc6 Kf7 20.Qd5 Ke8 21.Qa8 Kd7 22.Ra6 Ne7 23.Ra7 Ke6 24.Qe8 Kd5 25.e4 Kc5 26.Ba3 Kb6 27.Qd7 Nd5 28.Qb7) 18.Ba3 Nc5 19.Bc5 Qc5 (19...Qd6 20.Qd6 Kf7 21.Qd5) 20.Qd7 1–0. GuestYXNL – GuestSGQS, freechess.org, 2020.

4.e3= d5 5.d4 Bd6 6.Ba3=.

4.e3= Qf6 5.Ba3 Ba3 6.Ra3 d6=.

4.e3= Qf6 5.Bb2 a6 6.Nf3 ab5 (better is 6...d6!?=) 7.Be5+/– Qf5?? (better is 7...Qh6 8.Bb8 Rb8+/–) 8.Bg7+- ba4 9.Be2 Nf6 10.Bh8 d5 11.Bf6 Qf6 12.Nc3 Qg7 13.0-0 (13...Bh3 14.Ne1+-; better is 13.Ra4!? Na6+-) 1–0. pumpkin (2330) – maxam, net–chess.com, 2007.

4.e3= Qf6 5.Bb2 d6 6.d4 ed4 7.ed4=.

4.e3 Qf6 5.Bb2 d6 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 Ne7 9.d4 Bb4 (9...ed4 10.Bd4 Bd4 11.Qd4=) 10.c3 Ba5 11.0-0 0-0 12.de5 de5 13.Nd2 Bc7 14.Ne4 Qg6 15.Ba3 Rd8 16.Qb3 (worse 16.Be7 Rd1 17.Rfd1 f5=+) 16...Nd5 17.Ng3 Nf6 18.bc6 Nc6 19.Qb7 e4 20.Qc6 Bg3 21.hg3 ef3 22.gf3 h5 (22...Rdc8!? 23.Qb7 Rcb8+/-) 23.Rfd1 Rdc8 24.Qb7 h4 25.Bd6 hg3 26.fg3 Nh5 27.g4 Qc2?? (better 27...Nf6+-) 28.gh5 Qc3 29.Bf4 Qc5 30.h6 gh6 31.Ra2 Qh5 (31...Kh8 32.Rh2 Rd8 33.Qb2 Kg8 34.Rg2 Kf8 35.Bh6 Ke7 36.Rd8 Kd8 37.Qf6 Kc8 38.Rg8 Kb7 39.Qf7 Ka6 40.Rg6 Ka5+-) 32.Rg2 Kh7 (32...Qg5 33.Bg5 Rc2 34.Qa8 Kh7 35.Qe4 Kg8 36.Bf6 Rg2 37.Kg2 a6 38.Rd8) 33.Qe4 Kh8 (33...Qg6 34.Qg6 fg6 35.Rd7 Kh8 36.Be5 Kg8 37.Rg6 Kf8 38.Bd6 Ke8 39.Re7 Kf8 40.Ra7 Ke8 41.Rg8) 34.Be5 f6 (34...Qe5 35.Qe5 f6 36.Qf6 Kh7 37.Rd7) 35.Bf6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3= Nf6 5.Bb2 d6 6.Nc3 0-0 7.h3 Re8 8.Nf3 b6 9.Be2 Bb7 10.0-0 d5 (10...Bb4 11.Na2 Ba5 12.Nc1=) 11.d4 (11.Ne5 Re5 12.d4 Bd4 13.Qd4 Qe7+=) 11...ed4= 12.Nd4 Bd4 (12...a6 13.Bf3=) 13.Qd4+= c5 14.Qd1 (14.Qh4 Nbd7+=) 14...Ne4 (14...d4 15.ed4 cd4 16.Na2+=) 15.Bf3 (15.Ne4 Re4 16.Bd3 Rb4+=) 15...Nc3 16.Bc3 a6 17.Bb2 (17.Qd3 Qg5+=) 17...Qg5+= 18.h4 (better is 18.Qd2!?+=) 18...Qh4+= 19.Bd5 Bd5 (19...Rd8 20.e4+=) 20.Qd5= Ra7 21.ba6 Ra6 22.Rfd1 h6 23.Qb7 Qb4?? (better is 23...Ra4 24.Ra4 Qa4 25.Qb6 Qb4 (worse is 25...Qc2 26.Rd8 Rd8 27.Qd8 Kh7 28.Qb8+/–) 26.Qb4 cb4=) 24.Be5!+- Ra4 (24...Re5 25.Qb8 Double attack (25.Qb8 Deflection; 25.Qb8 Decoy)) 25.Bb8 Ra1 26.Ra1 c4 (26...Qc3 27.Qa7+-) 27.Rd1 (better is 27.Bf4!? Qc3 28.Ra7 Rf8+-) 27...Qb2 28.Rd7 f5? (better is 28...Qc1 29.Kh2 Qc2 30.Rf7 Qg6+-) 29.Qd5 Kh8 30.Rd8 (better is 30.Bf4!? Qf6+-) 30...Rd8 31.Qd8 Kh7 32.Qf8?? (32.Qd7 Qa1 33.Kh2 Qf6+-) 32...Qa1?? 33.Kh2+- Qa5 34.f4 Qe1 35.Qf5 Kg8 36.Qd5 Kh8 37.Qd8 Kh7 38.Be5 Qe2 39.Qd7 Qh5 40.Kg1 Qg6 41.c3 Qb1 42.Kh2 Qg6 43.e4 Kg8 44.g4 Qe4 45.Qg7 1–0. henkf (1615) – adanbaev (1640), gameknot.com, 2011.

4.e3 Nf6 5.d4 ed4 6.ed4 Bd6 7.Be2 Qa5 (7...0-0 8.Nf3=) 8.Qd2 (8.Bd2 Bb4+=) 8...Qd2 9.Nd2 Bc7 10.Ba3 d6 11.Ngf3 h6 (11...Bf5 12.Nc4 d5 13.Bd6=) 12.Nc4 0-0? (better 12...d5!? 13.Nd6 Bd6 14.Bd6 Ne4 15.Bb8 Rb8+=) 13.Nd6+- Bd6 14.Bd6 Rd8 (14...Re8 15.Ne5+-) 15.Be7 Re8 16.Bf6 gf6 17.Kd2 Nd7 18.a5 (18.Rhe1 Nb6+-) 18...f5 19.Bc4 Nf6 20.Rhe1 (20.bc6 bc6 21.Ne5 Ne4 22.Kc1 Be6+-) 20...Be6 21.Be6 fe6 (21...Ne4 22.Kc1 Re6 23.a6 ba6 24.bc6 Rc6 25.Ne5+/-) 22.a6 ba6 (22...cb5 23.ab7 Rab8 24.Ra7 Ne4 25.Ke3+-) 23.bc6 (23.bc6 a5 24.Ra5 Ne4 25.Ke3+-) 1-0. DEFFM – GuestYVKY, freechess.org, 2019.

4.e3 Nf6 5.d4 ed4 6.ed4 Qe7 7.Be2 Bb4 8.c3 Ba5 9.Nf3 0-0 (9...Ne4 10.Qc2=) 10.0-0+= d5? (better 10...Re8 11.Re1 d5+=) 11.Ba3+- Qe8 (11...Qc7 12.Bf8 Kf8 13.Qc2+-) 12.Bf8 (12.Bd3 Qd8 13.Bf8 Qf8+-) 12...Qf8 13.Qc2 g6 (13...Bg4 14.Ne5 Be2 15.Qe2+-) 14.Nbd2 Bf5 15.Bd3 Ne4 (15...Bd3 16.Qd3 Nbd7 17.bc6 bc6 18.Rfb1+-) 16.Ne4 de4 17.Be4 Be4 18.Qe4 Bc3 19.Rab1 c5 (19...Bb4+-) 20.Qb7 Nd7 21.Qd7 cd4 22.Rfd1 Rd8 (22...h5 23.Rbc1+-) 23.Qa7 Qg7 (23...Ra8 24.b6+-) 24.b6 d3 (24...Qf8 25.b7 Bb4 26.Rd4+-) 25.b7 Qf8 26.b8Q Rb8 1–0. onur604 (2320) – XcoderDJ (2170), lichess.org, 2020.

4.e3 Nf6 5.d4 ed4=+ 6.ed4 Be7 7.Nf3 0-0 8.Bd3 d5 (8...a6 9.Bb2=+) 9.0-0= Ne4 10.Re1 f5 11.Ne5 (11.c4 a6+=) 11...Bd6 (11...Nd7 12.Bf4=+) 12.f3 (12.Ba3=) 12...Nf6 (12...Qb6 13.Be3 f4+=) 13.c4+= dc4? (better 13...Nbd7+=) 14.Bc4+- Kh8 15.Ba3 (better 15.Nc3+-) 15...Be5? (better 15...a6 16.Bd6 Qd6 17.ba6 Na6 18.Nf7 Rf7 19.Bf7 c5+-) 16.de5 (16.Re5?! Nbd7 17.Be7 Ne5 18.Bd8 Rd8+-) 16...Qd1 (16...Qb6 17.Kf1 Rd8+-) 17.Rd1 Nfd7 (17...cb5 18.ab5 Re8 19.ef6 gf6+-) 18.Bf8 Nf8 (18...a5+-) 19.Rd8 Nbd7 20.e6 Ne5 21.Rf8 1–0. DEFFM – cancelouz, freechess.org, 2019.

4.Ba3 Ba3 5.Ra3 Nf6 6.e3 0-0 7.h3. xorb – septika, ChessWorld.net, 2011.

4.Ba3 c5 +=.

4.Bb2 Qc7 5.e3 Bf5 6.Nf3 Nd7 7.Be2 Bd6 (7...Ngf6 8.Nc3=+) 8.Nh4 Be4 (8...Be6 9.f4 Ne7 10.fe5 Ne5 11.Bd4=+) 9.0-0 (9.Nc3 Ngf6=) 9...cb5 (9...Be7 10.Nf3=) 10.d3+= Bg6 11.Nc3 Rc8 (11...Ngf6 12.Nb5 Qb6 13.d4+=) 12.Nb5 Qc6? (better 12...Qb6+=) 13.Na7+- (13.Na7 Qc2 14.Rc1 Qb2 15.Rc8 Ke7 16.Nb5+-) 1–0. onur604 (2320) – JustADGTBoard (2010), lichess.org, 2020.

4.Bb2 d4 5.e3 c5 6.Bc4 Qg5 (6...Bd6 7.ed4 ed4 8.c3 dc3 9.Bc3 Qe7 10.Qe2=) 7.Nf3+= Qg2 (7...Qe7!?+=) 8.Rg1+/- Qh3 9.Bf7! Kf7 1-0. onur604 (2320) - satrancoyuncusu46 (2260), Casual Rapid game, 2021.

4.Bb2 d4 5.Nf3 Bd6 6.e3 c5 7.ed4 cd4 (7...ed4 8.Bd3 Qe7 9.Qe2 Qe2 10.Ke2+=) 8.c3 (8.Na3!?+-) 8...dc3= 9.Nc3 Nf6 10.Bc4 0-0 11.d3 Nbd7 (11...Bg4 12.h3 Bh5 13.0-0=) 12.0-0 Nc5 13.Re1 Bg4 (13...Be6 14.Ne5 Re8 15.Be6 Re6 16.d4 Be5 17.Re5+= (worse 17.dc5 Qc7=+)) 14.h3 Bh5 15.Nd5 Will e5 fall? 15...Rc8 (15...Ne6 16.Nf6 gf6 17.d4 ed4 18.g4+= (18.Bd4? Bf3 19.Qf3 Nd4 20.Qg4 Kh8-+)) 16.Be5+- Bf3 (16...Nd5!? 17.Bd5 Bc7+-) 17.Qf3+- (17.gf3?? Nd5 18.Bd5 Qg5 19.Kf1 Be5-+) 17...Be5 18.Re5 Nd5 19.Rd5 (19.Bd5 b6+-) 19...Qf6 (19...Qe7 20.Qe3 Qe3 21.fe3+-) 20.Qf6 gf6 21.a5 Rfd8 (21...Rfe8 22.Ba2 Rc7 23.Rc1+-) 22.b6 (22.Rc1 b6+-) 22...Rd5 23.Bd5 ab6 24.d4 Nd3?? (better 24...Rd8 25.dc5 Rd5 26.ab6 Rc5+-) 25.Bb7+- (25.Bb7 Rd8 26.a6+-) 1–0. GuestTRLR – GuestTZNG, freechess.org, 2020.

4.Bb2 d4 5.Nf3 Bd6 6.e3 c5 7.ed4 ed4 8.Bc4 Qe7 9.Qe2 Qe2 10.Be2 h6 (10...Bf5 11.d3=) 11.0-0 Nf6 12.c3 dc3 13.Nc3 b6 (13...0-0 14.d4+=) 14.a5+/- Bb7 15.a6 Bc8 16.Nh4 Be6?? (better 16...Bg4+/-) 17.Bf3+- Bd5 (17...g5+-) 18.Nd5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 d4 5.Nf3 Bd6 6.e3 de3 7.de3 f6 8.Bc4 Nh6 9.0-0 Nf7 10.Nc3 (10.Qd3 Be7 11.Qc3 0-0+-) 10...0-0 11.Ne4 Bc7 (11...Be7 12.Ba3 Ba3 13.Ra3+-) 12.Qb1 (better 12.Ba3 Re8 13.Qe2 Be6 14.Be6 Re6+-) 12...Qe7? (better 12...Qe8+-) 13.Ba3 Qe8 14.Qb3 (14.c3 Be6 15.Qb3 Bf5+-) 14...Nd7 15.Bf8 Qf8 (15...Kf8 16.a5+-) 16.Nfg5! Nc5 (16...fg5 17.Bf7 Double attack (17.Bf7 Decoy)) 17.Bf7 Kh8 18.Nc5 Qc5 (18...fg5 19.bc6 Qc5 20.cb7 Bb7 21.Qb7+-) 19.Ne6 Be6 (19...Qe7 20.Nc7 Qc7 21.bc6 bc6 22.Rab1+-) 20.Be6 1–0. GuestKNYD – GuestTPQC, freechess.org, 2020.

4.Bb2 Nd7 5.e3 Ne7 6.Be2 f6 7.Nf3 g6 8.0-0 Bg7 9.d4 e4 10.Nfd2 0-0 11.c4 f5 12.Nc3 Nf6 13.Qb3 Qc7 14.Ba3 Re8 15.bc6 bc6 16.Be7 Re7 17.cd5 cd5 18.Nd5 Nd5 19.Qd5 Be6 20.Qa8 Kf7 (20...Bf8 21.Rfc1 Qb7 22.Qb7 Rb7 23.Rab1 Bb4+-) 21.d5 (21.d5 Bc8 22.Rac1+-) 1-0. onur604 (2320) - Moiseschavez7 (2130), lichess.org, 2020.

4.Bb2 Nd7 5.Nf3 Bd6 6.e3 Ngf6 7.c4 0-0 8.cd5 cd5 9.Be2 Re8 10.0-0 Qe7 11.d4 e4 12.Nfd2 Nf8 13.Ba3 b6 (13...Bf5 14.a5=) 14.Qb3 Be6 15.Bd6 Qd6 16.Nc3 Rac8 17.Rfc1 h6 18.a5 Rc7 19.ab6 ab6 20.Nf1 Rec8 21.Ng3 Bd7 22.Rc2 Be6 23.Ra6 N8d7 24.h3 g6 25.Nf1 Kg7 26.Qb2 h5 27.Nd2 g5 28.Nf1 g4 29.hg4 hg4 30.Ra1 Rh8 31.Rcc1 Qf8 32.Na4 Rb7 33.Ng3 Qg8 34.Nc3 (34.Kf1 Rh2=) 34...Qh7 35.Bd1 Nh5 36.Nce2 Ndf6 37.Bc2 Ng3 38.fg3 (38.Ng3 Nh5 39.Be4 de4 40.d5 Kg6-+) 38...Rbb8 39.Kf2 Qf5 40.Nf4 Rh2 41.Rh1 Rbh8 (41...Rh1 42.Rh1 Bd7 43.Ke1=) 42.Rh2 Rh2 43.Qb4 Nd7 (43...Rh8 44.Qd6=) 44.Qd6+/- Kf6? (better 44...Nf6+/-) 45.Ra7+- Rh1 (45...Kg5 46.Kg1 Qh7 47.Rd7 Rh1 48.Kf2 Bd7 49.Qd7 Kh6 50.Qd5 Kg7+-) 46.Rd7 Rc1 47.Rc7 (47.Rc7+-) 1-0. onur604 (2320) - hcloby (2115), Casual Rapid game, 2021.

4.d4 e4 5.e3 Nf6 6.c4 Bb4 7.Bd2 Be7 8.c5 b6 9.Bb4 0-0 10.g3 (10.a5 bc5 11.Bc5 cb5 12.Bb5 Bc5 13.dc5 a6–/+) 10...Bg4 (10...Nfd7 11.Nc3–/+) 11.Be2 Qd7 12.Bg4 Ng4 13.Ne2 Qf5 (13...cb5!? 14.ab5 Qb5 15.Ra4-+) 14.0-0 Qh5 15.h4 Bh4 (better is 15...a6 16.Nf4 Qf5+=) 16.Kg2?? (16.Nf4 Qg5 17.Ng2 Bg3 18.fg3 a5+= (18...Ne3? 19.Qc1 Qg3 20.Qe3 Qe3 21.Ne3+-)) 16...Bg5 (better is 16...Bg3 17.Rh1 Ne3 18.Kg1 Bf2 19.Kf2 Qf3 20.Ke1 Qh1 21.Kd2 Nd1 22.cb6 Nf2-+) 17.Rh1= Qg6 18.Nbc3?? (better is 18.cb6 Qf5 19.Nf4 ab6 20.Bf8 Bf4 21.ef4 Kf8 22.bc6 Nc6 23.Qb3+=) 18...Be3! 19.Rf1?? (19.fe3 Ne3 Double attack) 19...Bg5 (better is 19...Qh6 20.Rh1 Qf6-+ (20...Nf2?! 21.Rh6 Nd1 22.cb6 ab6 23.Rd1 Bh6 24.Bf8 Kf8 25.bc6-+)) 20.Ba3? (20.cb6 ab6 21.Bf8 Kf8 22.bc6 Qc6+=) 20...f5 (better is 20...Rd8!?-+) 21.cb6–/+ Rf7 22.ba7 Raa7 23.Bc5 Ra8 24.b6? Na6 25.a5? h5 26.Kh3 e3 27.Rb1?? Nf2-+ 28.Rf2 ef2 29.b7 Rb8 30.Nf4 Bf4 31.gf4 Rbb7 32.Rb7 Rb7 33.Qf1 Qg1 34.Qg1 fg1Q 0–1. diggerdogwoofwoof – Tony_Farrell, ChessWorld.net, 2012.

4.e3 c5 5.Bb2 Nd7 6.Qh5 Ngf6 7.Qf5 g6 8.Qf3 e4 9.Qe2 Be7 10.d4 ed3 11.Qd3 (11.cd3 Bd6 Combination; 11.Qd3 0-0 Combination) 11...c4 12.Qd1 Nc5 13.Nc3 Attacking the backward pawn on d5 13...0-0 14.Nf3 Nfe4 (better is 14...Nce4 15.Ne4 Ne4+= (worse is 15...de4 16.Qd8 Rd8 17.Nd4+/–)) 15.Nd5+/– Bg5? (better is 15...c3 16.Bc3 Nc3 17.Nc3 Bf6 18.Qd8 Rd8+/–) 16.Bc4+- Qa5 (16...Be6 17.Qd4 Bf6 18.Nf6 Qf6+-) 17.Kf1 Na4 (17...Be6 18.Qd4 f6 19.Ng5 Ng5 20.Qc5 Qd8+-) 18.Qd4 f6 (18...Nb2 19.Ra5 Nc4 20.Ng5 Ned2 21.Ke1 Re8 22.Nf6 Kf8 23.Qc5 Re7+-) 19.Nf6 Kg7 20.Ne4 (20.Ne8 Kh6 21.Qg7 Kh5 22.Qh7 Bh6 23.Ng7 Kg4 24.h3#) 20...Kh6 21.Neg5 Kh5 22.Qh4# 1–0. wullie54 – Petra Vreeswijk, ChessWorld.net, 2011.

4.e3 f5 5.Bb2= Nd7 6.Nf3 Bd6 7.Be2 c5 8.d3 b6 9.0-0 h6 (9...Ngf6 10.c4=) 10.c4 (10.d4 e4 11.Ne5 Ne5 12.de5 Bc7+=) 10...d4 11.ed4 cd4 12.Re1 Bb4? (12...Ne7 13.Nfd2+=) 13.Nbd2?? (13.Ne5 Ne5 14.Bh5 Kf8 15.Re5 Ne7+-) 13...Ngf6?? (13...Ne7!?=) 14.Bf1?? (14.Nd4 Bb7 15.Ne6 Qe7 16.Nc7 Kd8 17.Na8 Ba8+-) 14...Bd6? (better is 14...0-0 15.Ne5 Ne5 16.Re5 Qd6+/–) 15.Nd4+- g6 16.Nc6 (16.f4 Bc5 17.Qf3 Rb8 18.fe5 Ng4+-) 16...Qc7 17.f4 e4 18.g3 0-0 19.de4 Ng4? 20.e5 Bc5 21.Bd4 Bb7 22.Bc5 Nc5 23.h3 Bc6 24.bc6 Ne5 25.Re5 Rad8 26.Qe2 Qc6 27.Bg2 Qd6 28.Bd5 Kh8 29.a5 Qf6 30.Nf3 Nd7 31.Re6 Qa1+= 32.Kg2 Qg7 33.ab6= Nb6 34.Ne5 Rf6?? 35.Rf6?? Qf6+= 36.Nf7 Kg7 37.Nd8 Qd8 38.Qe5 Kh7 39.Kf3 Nd5 40.Qd5 Qd5 41.cd5 Kg7 42.Ke3 Kf7 43.Kd4 Ke7 44.g4?? Kd6 45.g5 h5 46.Kc4 a5 47.Kb5 Kd5 48.Ka5 Ke4 49.Kb5 Kf4 50.Kc4 Ke3 51.Kd5 f4 52.Ke5 f3 53.Kf6 f2 54.Kg6 f1Q 55.Kh5 Qh3 56.Kg6 Kf4 57.Kf6 Qf5 0–1. Starr,Albert Martin – Sandberg,Evan, San Francisco MI Hurt mem U1800, 2005.

4.e3 Nf6 5.Bb2 Bd6 6.c4 0-0 7.c5 Bc7 8.g3 (8.Nf3 Nbd7+=) 8...Re8 9.Bg2 d4 10.e4 Bd7 11.Na3 cb5 12.ab5 Bg4 13.f3 Bh5 14.g4 Bg6 15.h4 h5 16.g5 (16.Nc4 Nbd7 17.g5 Nh7+=) 16...Nfd7–/+ 17.Rc1 Nf8 (17...Qe7!?–/+) 18.Bh3 Nbd7 19.c6 bc6 20.bc6 Nb6 21.Ne2 Ne6 22.0-0 d3 23.Ng3 Nf4 24.Bg2 (24.Kh2!?–/+) 24...f6-+ (worse is 24...Ng2 25.Kg2 Rb8 26.Bc3–/+) 25.Qb3 (better is 25.gf6 Qf6 26.Nb5 Qh4 27.Qe1-+) 25...Bf7 26.Qb4 (26.Qd1 fg5 (26...Ng2?! 27.g6 Bg6 28.Kg2-+) 27.Rf2 gh4-+) 26...fg5 (26...Ng2?! 27.g6 Bg6 28.Kg2-+) 27.hg5 (27.Kh2-+) 27...Qg5 28.Kf2 (28.Rf2 Qg3 29.Kf1-+) 28...h4 29.Rg1 Qg3 30.Kf1 Ng2 31.Rg2 (31.Qc5 h3 32.Qf2 Qf2 33.Kf2 Na4-+) 31...Qf3 32.Kg1 h3 33.Rh2 Re6 34.Rf2 h2! 35.Kh2 Qf2 36.Kh3 Rh6 0–1. MasterofDisaster – xcv123, Live Game Caissa's Web, 2004.

4.e3 Nf6 5.d4 =+.

4.e4 a6 5.bc6 Nc6 6.ed5 Qd5 7.Nc3 Qd7 8.d3 h6 9.Ba3 Ba3 10.Ra3 Nf6 11.Nf3 0-0 12.Be2 Qf5 13.0-0 Re8 14.Re1 b6 15.Nh4 Qd7 16.g4? (better is 16.Bf3+=) 16...Nd4-+ 17.Bf3 Bb7 (17...Qe7!? 18.Nb1 Nf3 19.Nf3 Bg4-+) 18.Bb7–/+ Qb7 19.Ne4 Ne4 20.de4 Rad8 (20...Rac8!? 21.Rd3 Nc2 22.Re2-+) 21.Rd3–/+ Qc6 22.c3 Ne6 23.Nf3 Qc5 (23...Rd3 24.Qd3 Qc8 25.Qe3-+) 24.Rd8 (24.Rd5 Qc7 25.Ne5 Nf4+=) 24...Nd8 (better is 24...Rd8!? 25.Qc2 Nf4-+) 25.Re3 Ne6 26.Rd3 (26.Qd5 Nf4 27.Qc5 bc5+=) 26...g6 (better is 26...Nf4 27.Re3 Qc8–/+) 27.Kg2? (better is 27.Rd5 Qc3 28.Re5–/+) 27...Nf4-+ 28.Kg3 Nd3 29.Qd3 a5 30.c4 Kg7 31.Qd7 Qe7 32.Qc6 Qc5?? (better is 32...Qd8-+) 33.Qe8+- Qc4 34.Qe5 Kh7 35.Qb5 Qc7 36.e5 g5 37.h4 gh4 38.Kh4 Kg7 39.Nd4 Qe7?? 40.Kg3+- Qd8 41.Nc6 Qc7 42.f3 Kg6 43.Nd4 Kg7 44.Nf5 Kg6 45.Ne3 f6 46.f4 fe5 47.fe5 Kf7 48.Nc4 Ke6 49.Nb6 Qc3 50.Kh4 Qe1 51.Kh5 Qh1 52.Kg6 Qh4 53.Qd5 Ke7 54.Qd6 Ke8 55.Qd7 Kf8 56.Qf7 1–0. delightful_porridge – 488, ChessWorld.net, 2014.

4.e4 de4!? 5.Bb2 Bd6 –/+.

4.Nf3 e4 5.Nd4 =+.

5.e3 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 c6 5.a4).

5.Nf3 Qc7 6.e3 Nf6 7.c4 0-0 8.c5 Bc5 9.Be5 Qe7 10.Bd3 (10.Bf6 Qf6 (worse 10...gf6 11.Bd3+=) 11.Nc3 Bf5=+) 10...Bg4 (10...Nbd7 11.Bg3=+) 11.Bb2 Nbd7 12.0-0 Ne4 (12...Bd6 13.Be2=+) 13.Be2 Bd6 (13...a6 14.d3 Nf2 15.Rf2 Be3 16.bc6 Bf2 17.Kf2 bc6 18.Ba3=) 14.d3= Nec5 15.Nc3 Rad8 (15...Nf6 16.Rc1=) 16.d4 Ne4 17.Ne4 de4 18.Nd2 Be2 19.Qe2 Nf6 20.Nc4 Bb8 (better 20...Rfe8!?=) 21.bc6+- bc6 22.Ba3 Qc7 23.g3 Rfe8 24.Rfb1 (24.Rfc1 Re6+-) 24...Nd5 (24...Qc8 25.Rb3+=) 25.Rb3 (25.Qc2 Re6+-) 25...Qd7 (25...Qc8 26.Na5 Re6 27.Rc1+=) 26.Bc5+- Re6 (26...Qc8 27.Rab1 Qa6 28.Qf1+-) 27.Rab1 Bc7 28.Qg4 (28.Qc2 a5+-) 28...Nf6 (28...Qc8 29.Qd1+= (29.Ba7? Qa6-+)) 29.Qh3 Qd5 30.Qf1 1–0. GuestQJTG – apwismar, freechess.org, 2020.

5.Nf3 f6 6.e3 Be6 7.d3 Ne7 8.Be2 0-0 9.0-0 Bc7 (9...a6 10.c4=+) 10.c4= Ng6 11.Nc3 a6 12.Qb3 b6 13.d4 e4 (13...ab5 14.ab5 Ra1 15.Ra1+/-) 14.Nd2+= Kh8 (14...Qd6!? 15.g3 Rf7+/-) 15.bc6+/- Nc6 (15...Ne7!? 16.Ba3 dc4 17.Bc4 Bc4 18.Nc4 Nbc6+-) 16.cd5+- Na5 17.Qa2 (17.Qc2 Bf5+-) 17...Bf7 18.Nde4 Qd7 (18...f5 19.Ng3 Ne7 20.Ba3+-) 19.Ba3 Rfd8 20.Qc2 Bd5? (better 20...Rdc8 21.d6 Bd8+-) 21.Nd5 Qd5 22.Qc7 Qe4 23.Bf3 (23.Bf3 Qe6 24.Ba8 Ra8 25.Rac1+-; 23.Qb6?! Nh4 24.Bf3 Nf3 25.gf3 Qf3+=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.c4 Ngf6 7.cd5 cd5 8.e3 0-0 9.d4 Re8 (9...e4 10.Nfd2=+) 10.de5= Ne5 11.Ne5 Be5 12.Be5 Re5 13.Be2 a6 14.Nd2 Bd7 (14...Re8 15.Nb3=) 15.0-0+= Qb6 16.Nf3 Ree8 17.a5 Qd6 18.ba6 ba6 19.Qd4 Bg4 20.Rfb1 Rab8 (20...Qe6!?+=) 21.Rb6+/- Rb6 22.ab6 Qc6 23.Ne5 (23.Ba6?! Bf3 24.gf3 Nd7+=) 23...Qc8 (23...Re5 24.Bg4 Ng4 25.Qg4 Re4=) 24.Ng4 (24.Ng4 Nd7 25.Ba6+- (worse 25.Ra6 h5+-); worse 24.Bg4 Ng4 25.Ng4 Qb8 26.Ra6 h5 27.Nf6 gf6 28.Qd5 Rc8+-) 1-0. DEFFM – GuestYDCR, freechess.org, 2021.

6.e3 Ne7 7.Be2 Qa5 (7...e4 8.Nh4 0-0 9.f4–/+) 8.0-0 (8.c4 0-0=+) 8...0-0=+ 9.c4 (9.Nc3 e4 10.Nd4 c5=+) 9...e4–/+ 10.Ne1 Nb6 (10...Qc7!? 11.f4 Nc5–/+) 11.d3= ed3 12.Bd3 dc4 (better 12...Rd8!? 13.cd5 Nbd5=) 13.Bh7+= Kh7 14.Qd6 Nf5?? (better 14...Nbd5 15.e4 Qc7+=) 15.Qf8+- Na4 (15...Be6 16.Qa3 cb5 17.ab5 Qb5 18.Nf3+-) 16.Qf7 (better 16.Nf3 Qb5 17.Ng5 Kh6 18.Nf7 Kg6 19.Ra4 Qb2 20.Rc4 Nh6 21.Nh6 Be6+-) 16...Nh6 (16...Qb5 17.Ra4! Qb2+-) 17.Qg7 1–0. GuestVNCM – igortucak, freechess.org, 2020.

6.e3 f5 7.d4 e4 8.Ne5 White launches an attack 8...Ne5 9.de5 Bb4 (9...Bc7 10.Be2=) 10.Nd2 (10.Bc3 Be7=) 10...Be6 11.c3 Ba5 12.Nb3 Bb6 (12...Rb8!?=) 13.a5+= Bc7 14.Nd4 Qd7 15.a6 (15.Ne6?! Qe6 16.a6 Rb8= (worse 16...Be5 17.ab7 Rb8 18.Ra7+=)) 15...ba6 16.bc6 Qe7 (better 16...Qf7!?+/-) 17.Ba3+- (17.Ra6?! Bc8 18.Ra4 Be5+=; worse 17.Ne6 Qe6 18.c4 Ne7 19.cd5 Nd5+-) 17...Qf7 18.Bd6 (18.Ne6?! Qe6 19.Bc5 Be5=) 18...Rc8 (18...Bb6 19.Ba6 Ne7+-) 19.Ba6 (19.Ra6?! Bb6 20.Qa4 f4+-; 19.Ne6?! Qe6 20.Ba6 Bd6 21.Bc8 Qe5 22.Ra7 Ne7 23.Bd7 Kf7+-) 19...Ne7 (19...Bb6 20.Ne6 Qe6 21.Bc8 Qc8 22.Qd5+-) 20.Bc8 Nc8 21.Bc7 Qc7 22.Ne6 Qe5 23.Qd5 Qd5 24.Nc7 Kf7 25.Nd5 Rd8 26.Ra5 Nb6 (26...Rd6+-) 27.Ra7 Kg6 28.Nb6 (28.Nb6 Rd6 29.c7+-) 1-0. DEFFM – GuestXRYZ, freechess.org, 2020.

6.e3 Ngf6 7.Be2 0-0 8.0-0 e4 9.Ne1 c5 10.c4 (10.a5 Qc7 11.f4 Rd8=+) 10...Qc7 11.f4 b6 (11...d4!?=+) 12.cd5= Nd5 13.Nc3 Nc3 14.Bc3 Bb7 15.Bc4 Rae8 (better 15...Be7!?=) 16.Qg4+/- g6 17.Qg5 Be7 18.Qh6 Bf6 19.f5 Bc3?? (better 19...Kh8!+=) 20.fg6+- (20.dc3?! Qd6+/-) 20...hg6 21.Qg6 Bg7 (21...Kh8 22.Bf7 Nf6 23.Rf6 Rf7 24.Rf7 (24.Qf7?! Qf7 25.Rf7 Ba1 26.Rb7 Rd8+-) 24...Qf7 25.Qf7 Ba1 26.Qe8 Kh7 27.Qf7 Kh6 28.Qb7+-) 22.Rf7 Rf7 23.Qf7 Kh7 24.Qf5 Kh6 25.Bf7 (25.Bf7 Qh2 26.Kh2 Be5 27.Kg1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.e3 Ngf6 7.Be2 0-0 8.0-0 Re8 9.d3 Nf8 10.Nbd2 Ng6 11.c4 Bf5 12.Rc1 h6 13.Qb3 Qe7 14.c5 (14.Rc2!?=) 14...Bc5=+ 15.d4 ed4 16.Nd4 Bd4 17.Bd4 Ne4 (17...Rec8!?=+) 18.Ne4+= Be4 19.f3 Bf5 20.bc6 bc6 21.Rc6 Ne5 22.Rc5 Nc4 (22...Be6 23.Ba6+/-) 23.Bc4+/- dc4 24.Qc4 (worse 24.Rc4 Be6=+) 24...Rac8 25.Rc1 Rc5 26.Qc5 Qc5 27.Rc5 Be6 (better 27...Bc8!?+-) 28.Ra5 Ra8 29.Ra7 Kf8?? (29...Ra7 30.Ba7 Kf8+-) 30.Ra8 (30.Ra8 Ke7 31.Bg7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.c4 dc4 7.e3 Nf6 8.Bc4 0-0 9.d3 Bg4 10.0-0 cb5 11.ab5 Nbd7 (11...Rc8 12.h3 Bh5 13.g4=) 12.Nbd2 h6 13.Qb3 Nc5 Black plans e4 14.Qc3 e5 becomes the focus of attention. White fights for the Initiative 14...e4 (14...Ncd7 15.h3 Be6 16.Be6 Qe6 17.Rfc1=) 15.de4 Nce4 16.Ne4 Qe4 17.Nd4 (17.Nd2 Qe7=) 17...Rac8 (17...Qe5!? 18.g3 Rfd8=) 18.Qb3 Bh5 (18...Qe5!? 19.g3 Qc5+/-) 19.Ra7 Qh4 (19...Qe5 20.g3 Qc5 21.Ra4+/-) 20.g3+- Qh3 21.Bd5 Ng4 Threatening mate: Qxh2 22.Nf3 Rc5 (better 22...b6+-) 23.Ba3 (worse 23.Bb7 Rf5 24.Qc3 f6-/+) 23...Ne3? (23...Nf6 24.Bb7 Rc7=) 24.fe3 (24.Qe3?! Rd5 25.Bd6 Rd6 26.Rb7 Re6+=) 24...Bf3 (24...Rd8 25.b6 Bg3 26.Bc5 (26.hg3 Qg3 27.Kh1 Rcd5 28.Nh2 Rd2 29.Rf2 Bf3 30.Nf3 Rd1 31.Qd1 Rd1 32.Rf1 Rf1 33.Ng1 Rg1) 26...Bf3 27.Rf3 (27.Bf7 Kh8 28.Qc2 Bh2 29.Qh2 Qg4 30.Kf2 Rd2 31.Ke1 Rh2 32.Ra8 Kh7 33.Bg8 Kg6-+) 27...Qh2 28.Kf1 Qh1 29.Ke2 Qg2 30.Kd3 Qf3 31.Kd4-/+) 25.Rf3 Rd5 26.Qd5 Ba3 27.Ra3 Qg4 28.Qb7 Qe6 (28...f6 29.Ra8 Qc4 30.Rf8 Kf8 31.b6 Qc1 32.Kg2 Qd2 33.Rf2+-) 29.b6 (better 29.Ra8 Ra8 30.Qa8 Kh7 31.Qc6+-) 29...Qc4 (29...Kh7+-) 30.Ra8 Qc1 31.Kg2 Qb2 32.Kh3 (32.Rf2 Qb3 33.Rf8 Kf8 34.Qb8 Ke7 35.Qc7 Ke6 36.Qf7 Ke5 37.Qb3 g5 38.b7 Kd6 39.b8Q Kd7 40.Qd5 Ke7 41.Qbe5) 32...Qb3 33.Rf8 Kf8 34.Qc8 (34.Qc8 Ke7 35.Qc7 Ke8 36.b7+-) 1-0. DEFFM – GuestZYKX, freechess.org, 2019.

6.e3 e4?? 7.Bg7+- f6? (7...ef3 8.Bh8 fg2 9.Bg2 Nf6+-) 8.Bh8 Bg4 (8...h5 9.Ng5! fg5 10.Qh5 Kd8+-) 9.h3 Bf3 (9...Bh5 10.g4 Qf8 11.gh5+-) 10.gf3 Nd7 (10...Be5 11.Rg1 Nh6 12.Nc3 Bc3 13.dc3+-) 11.fe4 Ne5 (11...Qe4 12.Rg1 Ne7 13.Qh5 Kd8 14.Bd3+-) 12.ed5 cd5 (12...Ng6 13.Qg4 Be5 14.Nc3 Bc3 15.dc3 cd5 16.Bd3+-) 13.Rg1 0-0-0 (13...Ng6 14.Bd3 Qf7 15.Bg6 hg6 16.Qg4+-) 14.Rg7 Qf8 (14...Qe6 15.Qh5+-) 15.Qh5 Ng6 16.Qh7 (better 16.Rh7 N8e7 17.Bg7 Qf7+-) 16...N8e7 17.Rg6 Ng6 18.Qg6 Qh8 19.Nc3 Be5 (19...d4 20.ed4 Kb8 21.Nd5+-) 20.Qf5 Kb8 21.d4 Bd6 (21...Bc7 22.Nd5 Ba5 23.Kd1+-) 22.Nd5 Rg8 (22...Qf8 23.c4+-) 23.Qf6 Qf6 24.Nf6 Rg1 25.0-0-0 Bb4 (25...Kc8 26.f4+-) 26.Kb2 a6 (26...Kc8 27.Nd5 Bf8 28.e4+-) 27.Kb3 Bd6 28.ba6 ba6 29.e4 Bf4 30.e5 Kc7 31.Nd5 (31.Nd5 Kb8 32.Nf4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.e3 Nf6 7.c4 0-0 8.cd5 cd5 9.Be2 Bf5 (9...Bg4 10.0-0=+) 10.0-0=+ Nbd7 11.Nh4 (11.Nc3 Rac8=+) 11...Be6 12.Nf3 Rfc8 13.d3 (13.Nc3 h6=+) 13...Bf5 (13...Rc7!?-/+) 14.Nh4=+ Be6 15.Nf3 Rc7 16.Nbd2 Rac8 17.Rc1 Nc5 (better 17...Rc1!? 18.Bc1 Qd8-/+) 18.Ne5= Bf5 (18...Na4 19.Qa4 Be5 20.Ba3=) 19.d4 (19.f4+=) 19...Be5 (better 19...Ncd7!? 20.Rc7 Rc7=) 20.de5+/- Nfe4 (20...Nfd7 21.f4+/-) 21.Nf3 Be6 22.Bd4 b6 23.Bb2 h6 24.Nd4 Bd7 25.f3 Ng5 26.Kh1 Qe5? (better 26...Kh8!?+-) 27.f4 Qe3 28.fg5 Qg5 (28...hg5 29.Rc3 Qe7 30.Bh5+-) 29.Nf3 Qe7 30.Ne5 Be6 31.Nc6 Qg5 32.Be5 Rd7 33.a5 (better 33.Bf4 Qh4+-) 33...f6?! (33...d4 34.Bf4 Qd5+-) 34.Bd4 Rdc7 (34...Re8 35.Bc5 bc5 36.Rc5+-) 35.Na7! Ra7 36.ab6 Rb7 (36...Rd7 37.Re1 (worse 37.Rc5 Rc5 38.Bc5 Qe5+-) 37...Bf5 38.Rc5 Rc5 39.Bc5+-) 37.Rc5 Rc5 38.Bc5 1-0. onur604 (2320) - charlie_thejuggler1 (1920), lichess.org, 2020.

6.e3 Nf6 7.c4 cb5 8.c5= Bc5 9.Bb5 Nc6 (9...Nbd7 10.Ne5 a6 11.Nd7 Nd7 12.Bd7 (worse 12.Bg7 Rg8 13.Bd7 Bd7-/+) 12...Bd7 13.0-0= (worse 13.Bg7 Rg8 14.Bb2 Qe4-/+)) 10.Ne5 Bd7 11.Nd7 Qd7 (11...Nd7 12.Qg4 Rg8 13.Qh5+= (worse 13.Bg7 0-0-0-/+)) 12.Bf6+/- gf6 13.Qh5 a6 14.Bd3 0-0-0?? (better 14...Ne7+=) 15.Bf5+- (15.Bh7?! Rde8+/-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.e3 Nf6 7.c4 Bd7 8.cd5 cd5 9.Be2 0-0 10.0-0 e4 11.Nd4 a6 (better 11...Qe5!? 12.g3 Bh3=+) 12.Nc3+= ab5 13.ab5 (worse 13.Bb5 Nc6 14.Be2 Nd4 15.ed4 Rfc8=+) 13...Ra1 14.Qa1 Bg4 (better 14...Be6!?+=) 15.Nd5!+- Nd5 16.Bg4 Nd7? (better 16...g6+-) 17.Nf5+- Qe6 18.Bg7 N7f6 (18...Be5 19.Be5 Qe5 20.Nh6 Kg7 21.Bd7 Qa1 22.Nf5 Kf6 23.Ra1 Rd8+-) 19.Nh6 Kg7 20.Be6 fe6 21.Ng4 Kg6 (21...h5 22.Nf6 Nf6 23.Qd4+-) 22.Qd4 Ng4 (22...Bc7 23.Nf6 Nf6 24.f3+-) 23.Qe4 Kh5 (23...Kf6 24.Qg4 Ke7+-) 24.Qh7 Nh6 25.g4! Kg5 (25...Kg4 26.Qg6 Double attack (26.Qh6 Deflection; 26.Qb7 Zwischenzug)) 26.Qg7 (26.Qg7 Kh4 27.Qh6 Kg4 28.Qe6 Kh4 29.Qh6 Kg4 30.Qg6 Kh4 31.Qd6 Rg8 32.Kh1 Rg7 33.Qd5 Rg5 34.Qb7 Rg6 35.Qh7 Kg5 36.Rg1 Kf6 37.Rg6 Ke5 38.Rc6 Kd5 39.Qf5) 1–0. GuestLWDF – GuestFRDN, freechess.org, 2020.

6.e3 Bg4 7.d4 e4 8.h3 Bf3 9.gf3 f5 10.fe4 fe4 11.c4 Nf6 12.Qb3 0-0 13.Nc3 dc4 (13...Bb4 14.Rg1=+) 14.Bc4= Kh8 15.0-0-0 (15.Rd1 Nbd7=+) 15...a6 16.Rhg1 ab5 17.ab5 Ba3 (17...Bb4 18.Na2 cb5 19.Qb4 Qb4 20.Nb4 bc4 21.d5-/+) 18.Rg5 (18.Kd2 Nd5 19.Rgf1 Bb2 20.Qb2 Nc3 21.Qc3 Rf3=+) 18...Bb2 (18...Nfd7 19.Rdg1 g6 20.bc6 A) 20...Rf2? A1) 21.cb7 Rb2 (21...Bb2?! 22.Qb2 Ra3 23.Ne2=) 22.ba8Q Rb3 23.Kd2 Rc3-/+; A2) 21.c7 Qf8 A21) 22.cb8B?? Bb2 23.Qb2 Rb2 24.Kb2 Qb4 (24...Qb8?! 25.Ne4 Qf8 26.R1g3-+; 24...Rb8?! 25.Kb3-+) 25.Kc2 Ra3-+ (25...Nb8?! 26.Rc5 Ra3 27.Bd5=+); A22) 22.cb8R?! Nb8 23.Ne2 Nd7+-; A23) 22.cb8N Bb2 23.Qb2 Rb2 24.Kb2 Qb4 (24...Qb8?! 25.Ne4 Qf8 26.R1g3-+; 24...Rb8?! 25.Kb3-+) 25.Kc2 Qc4-+ (25...Nb8?! 26.Rc5 Ra3 27.Bd5=+); A24) 22.cb8Q Nb8 23.Be2+-; B) 20...Nc6?! 21.R5g2=+; C) 20...bc6=) 19.Qb2=+ Qa3 (better 19...cb5!? 20.Rb5 Qc7=+) 20.Qa3+= Ra3 21.Kb2 Ra5 22.Kb3 cb5 (22...Nbd7 23.Be6 h6 24.Rg3+/-) 23.Rb5+/- Rb5 24.Bb5 Nc6 25.d5 (25.Bf1 Rc8+/-) 25...Ne5+= 26.d6 Rd8 27.Na4 Nd3 28.Bd3 ed3 29.Rd3 Ne4 30.d7 (30.Rd4!? Nd6 31.Nc5+/-) 30...Nf2?? (30...b5 31.Nb6 Nc5 32.Kc2 Nd3 33.Kd3 Kg8+/-) 31.Rc3+- (31.Rc3 Kg8 32.Rc8+-) 1-0. onur604 (2320) - Radovan1963 (2175), Casual Rapid game, lichess.org, 2021.

6.Nf3 a6 7.Bd7 Nd7 8.0-0 (8.Bb2 Bd6 9.Nc3 Ngf6 10.0-0 0-0 11.Ba3 Ba3 12.Ra3 Qc7 13.a5; 8.Qe2 Ngf6 9.Bb2 Bd6 10.Nc3 Qc7 11.g3 0-0 12.0-0 Rfe8 13.Qd1; 8.Nc3 Ngf6 9.0-0 Qc7 10.Bb2 Bb4 11.Qb1 0-0 12.Qa2 Qa5 13.Ne2; 8.h3 Ngf6 9.Nc3 Bb4 10.Ba3 Ba3 11.Ra3 0-0 12.0-0 Qc7 13.a5) 8...Ngf6 9.Nc3 Qc7 10.Ba3 Ba3 11.Ra3 0-0 12.Qc1 b6 13.a5.

6.Nf3 Bb5 7.ab5 e4 (7...Nd7 8.0-0 (8.Nc3 Ngf6 9.0-0 Qc7 10.Ba3 Ba3 11.Ra3 0-0 12.Qa1 Nb6 13.Rd1; 8.Qe2 Ngf6 9.Nc3 Bb4 10.Bb2 0-0 11.0-0 Qc7 12.h3 Rfe8 13.Ra4; 8.d3 Ngf6 9.0-0 Qc7 10.h3 Bd6 11.Bb2 0-0 12.Nc3 Rfc8 13.Ra4; 8.h3 Ngf6 9.Nc3 e4 10.Nd4 Bc5 11.Nb3 0-0 12.Nc5 Nc5 13.Ba3) 8...Ngf6 9.Nc3 Qc7 10.Bb2 Bd6 11.Ba3 Ba3 12.Ra3 0-0 13.Qa1; 7...Bd6 8.Nc3 (8.0-0 Nf6 9.Ba3 0-0 10.Nc3 Qe7 11.Bd6 Qd6 12.Ra4 Nbd7 13.Qa1; 8.Qe2 Nf6 9.0-0 Nbd7 10.Nc3 0-0 11.Bb2 Nc5 12.d4 ed4 13.Nd4; 8.Ba3 Nf6 9.Nc3 0-0 10.0-0 Qe7 11.Bd6 Qd6 12.Ra4 Nbd7 13.Qa1; 8.c4 dc4 9.Na3 Ba3 10.Ba3 Nd7 11.Qa4 Nb6 12.Qb4 Nf6 13.Ne5) 8...Nf6 9.0-0 0-0 10.Ba3 Qe7 11.Bd6 Qd6 12.Ra4 Nbd7 13.Qa1; 7...Qc7 8.Nc3 (8.b6 Qb6 9.Nc3 Nf6 10.Rb1 Bb4 11.Na2 Nc6 12.c3 e4 13.Nh4; 8.Bb2 Nd7 9.0-0 Ngf6 10.Nc3 Bd6 11.Ba3 Ba3 12.Ra3 0-0 13.Qa1; 8.c4 e4 9.Nd4 Qc4 10.Na3 Qc7 11.Bb2 Nd7 12.Rc1 Nc5 13.0-0; 8.Ba3 Ba3 9.Ra3 Nd7 10.Nc3 Ngf6 11.Qa1 Nb6 12.0-0 0-0 13.Rd1) 8...Nf6 9.b6 Qb6 10.Rb1 Bb4 11.Ne5 0-0 12.Ng4 Ng4 13.Nd5) 8.Nd4 (8.Ne5 Qg5 9.Qg4 Qg4 10.Ng4 h5 11.Ne5 Rh6 12.Nc3 Bd6 13.f4) 8...Bc5 (8...Nf6 9.Nc3 Nbd7 10.Qe2 Bc5 11.Ba3 a5 12.ba6 Ra6 13.Ncb5) 9.Ba3 (9.Nc3 Nf6 10.Ba3 Nbd7 11.Bc5 Nc5 12.0-0 0-0 13.f4) 9...Ba3 (9...Nd7 10.Bc5 Nc5 11.Qh5 Qd6 12.Nc3 Nf6 13.Qg5) 10.Ra3 Nf6 (10...Nd7 11.Nc3 Ngf6 12.Qa1 0-0 13.Ra7) 11.0-0 (11.Nc3 Qd6 12.Qa1 a6 13.0-0) 11...b6 (11...0-0!?= 12.Nc3 Nbd7 13.Qa1; 11...Qd6 12.f3 0-0 13.Nf5) 12.Nc3+/– Nbd7 (12...0-0 13.Qa1) 13.f3 (13.Qa1+-) 13...ef3 (13...Nc5 14.Nf5 g6 15.Nh6+/–) 14.Nc6 Qc7 15.Qf3 0-0 (15...Qd6!? 16.Ra7 Ra7 17.Na7 0-0+-) 16.Nd5+- Qd6 17.Rd3 Nd5 18.Rd5 Qe6 19.Nd4 Qe7?? (better is 19...Qe8+-) 20.Nf5 Qf6 21.Rd7 g6 (21...Kh8+-) 22.Nh6 Kg7 23.Qf6 Kh6 24.Rf4 Kh5 25.Rh4 1–0. jasio – dzikowski, internet, 2011.

6.Nf3 Nc6 7.Ba3 A) 7...Nge7 8.0-0 (8.Nc3 e4 9.Ng1 a6 10.Bc6 bc6 11.Nge2 g6 12.0-0 Bg7 13.Nd4) 8...e4 9.Ne1 Nf5 10.Bf8 Kf8 11.Nc3 a6 12.Be2 Qa5 13.Qb1; B) 7...e4 8.Bc6 (8.Bf8 Kf8 9.Nd4 Nd4 10.ed4 Nf6 11.Nc3 g6 12.0-0 Kg7 13.Qb1; 8.Nd4 Ba3 9.Ra3 Nd4 10.ed4 Ne7 11.Qg4 Bb5 12.ab5 0-0 13.0-0) 8...bc6 9.Bf8 Kf8 10.Ne5 Be8 11.f4 f6 12.0-0 Nh6 13.c4; C) 7...Ba3 8.Na3 (8.Ra3 Qe7 9.0-0 e4 10.Nd4 Nf6 11.Rb3 Nd4 12.ed4 0-0 13.Nc3; 8.Bc6 bc6 9.Ra3 e4 10.Nd4 c5 11.Ne2 Nf6 12.Nbc3 0-0 13.0-0) 8...Nge7 9.0-0 0-0 10.Qe2 e4 11.Nd4 Nd4 12.ed4 Be6 13.Qe1.

6.Nf3 Nc6 7.Bb2 A) 7...Bd6 8.Bc6 Bc6 9.Be5 Nf6 10.Bd6 Qd6 11.Nc3 0-0 12.0-0 Ne4 13.Ne4; B) 7...f6 8.Nc3 (8.0-0 Bd6 9.c4 a6 10.cd5 ab5 11.dc6 Bc6 12.ab5 Ra1 13.Ba1; 8.Nh4 Nh6 9.Nc3 a6 10.Be2 Be6 11.0-0 Be7 12.Ba3 Ba3 13.Ra3; 8.d4 e4 9.Nfd2 a6 10.Be2 Qb6 11.Qc1 Nb4 12.c4 Nd3 13.Bd3; 8.c4 a6 9.cd5 ab5 10.dc6 bc6 11.0-0 b4 12.d4 ed4 13.Qd4) 8...Nge7 9.0-0 a6 10.Be2 Qa5 11.d4 e4 12.Nd2 Qb4 13.Rb1; C) 7...Nh6 8.Ne5 Ne5 9.Be5 Bb5 10.ab5 Qg5 11.Bg3 Be7 12.Nc3 Bf6 13.0-0; D) 7...e4 8.Ne5 Nf6 9.Nd7 Qd7 10.Bf6 gf6 11.0-0 Bb4 12.Nc3 Rg8 13.Rb1.

6.Nf3 Nc6 7.Bc6 A) 7...bc6 8.Ne5 (8.0-0 e4 9.Ne5 Nf6 10.f4 ef3 11.Qf3 Bd6 12.Nd7 Qd7 13.Ba3) 8...Qg5 9.Nf3 Qg2 10.Rg1 Qh3 11.Ba3 Ba3 12.Ra3 Nf6 13.Nc3; B) 7...Bc6 8.Ne5 (8.Nc3 Bd6 9.Nb5 Ne7 10.Nd6 Qd6 11.Ba3 Qc7 12.0-0 0-0 13.Nh4; 8.0-0 Bd6 9.Ba3 Ne7 10.d4 e4 11.Ne5 0-0 12.Nd2 Be8 13.f4; 8.Bb2 f6 9.Nc3 Bb4 10.0-0 Ne7 11.Ba3 Bc3 12.dc3 0-0 13.Nh4; 8.d4 e4 9.Ne5 Bd6 10.0-0 Qc7 11.Nc6 bc6 12.Ba3 Bh2 13.Kh1 Bd6) 8...Qg5 9.Nf3 Qg2 10.Rg1 Qh3 11.Bb2 Nf6 12.Nc3 a6 13.a5.

6.Nf3 e4 7.Nd4 A) 7...Nf6 8.Ba3 (8.Bd7 Qd7 9.Bb2 Be7 10.Nc3 0-0 11.0-0 Nc6 12.Nce2 Rac8 13.h3; 8.Nc3 Nc6 9.0-0 Nd4 10.ed4 Bb5 11.ab5 Qb6 12.Bb2 Bd6 13.d3; 8.0-0 Nc6 9.Nc3 Nd4 10.ed4 Bb5 11.Nb5 Qb6 12.Rb1 a6 13.Nc3; 8.Bb2 Nc6 9.Nc3 Qc7 10.Ba3 Ba3 11.Bc6 bc6 12.Ra3 c5 13.Ndb5) 8...Ba3 9.Ra3 Nc6 10.Nc3 Nd4 11.ed4 0-0 12.0-0 Bf5 13.Be2; B) 7...a6 8.Bd7 (8.Be2 Nf6 9.Nc3 Nc6 10.Nc6 Bc6 11.0-0 Bd6 12.a5 0-0 13.Ba3) 8...Qd7 9.0-0 Nf6 10.Bb2 Be7 11.f3 0-0 12.fe4 Ne4 13.Nf5; C) 7...Nc6 8.Nc3 (8.0-0 Nd4 9.ed4 Bb5 10.ab5 Nf6 11.d3 Bb4 12.de4 de4 13.Ra4; 8.Qe2 a6 9.Bc6 bc6 10.Nc3 c5 11.Nb3 Nf6 12.f3 Bd6 13.fe4; 8.Bb2 Nf6 9.0-0 Bd6 10.Ba3 Nd4 11.ed4 Ba3 12.Ra3 Bb5 13.ab5; 8.Bc6 bc6 9.Nc3 Nf6 10.0-0 c5 11.Nde2 Bd6 12.d3 Bh2 13.Kh2) 8...Nd4 9.ed4 Nf6 10.0-0 Bb5 11.ab5 Qb6 12.Bb2 Bd6 13.d3.

6.Nf3 e4 7.Bd7 Qd7 (7...Nd7 8.Nd4 Ngf6 9.Nc3 Bc5 10.Ba3 0-0 11.0-0 Ba3 12.Ra3 Ne5 13.Rb3) 8.Ne5 (8.Nd4 Nf6 9.Bb2 Be7 10.Nc3 Nc6 11.Nce2 0-0 12.0-0 Rfe8 13.h3) 8...Qf5 9.f4 Nc6 10.Bb2 Nf6 11.0-0 h6 12.c4 dc4 13.Nc6.

6.Nf3 e4 7.Ne5 A) 7...Bd6 8.Bb2 (8.Nd7 Nd7 9.Nc3 Ngf6 10.f4 0-0 11.Be2 Bc5 12.0-0 Qa5 13.Nb5) 8...Nf6 9.Ng4 a6 10.Nf6 gf6 11.Bd7 Nd7 12.Nc3 Qb6 13.Rb1; B) 7...Nf6 8.Bb2 (8.Nd7 Nbd7 9.Bb2 Bb4 10.Nc3 0-0 11.0-0 a6 12.Bd7 Qd7 13.Ne2; 8.Nc3 Bd6 9.f4 a6 10.Nd7 Nbd7 11.Be2 Bc5 12.0-0 d4 13.ed4; 8.0-0 Bd6 9.Nd7 Nbd7 10.f4 ef3 11.Qf3 0-0 12.Nc3 Ne5 13.Qf5; 8.f4 a6 9.Be2 Nc6 10.0-0 Bc5 11.Ba3 Ba3 12.Ra3 0-0 13.Qc1) 8...a6 9.Nd7 Nbd7 10.Bf6 gf6 11.Be2 Rg8 12.0-0 Nc5 13.a5; C) 7...Nc6 8.Bb2 (8.Nd7 Qd7 9.Bb2 Nf6 10.Bf6 gf6 11.Nc3 Rg8 12.0-0 Bb4 13.Bc6; 8.Qh5 Qf6 9.Bc6 bc6 10.Bb2 Nh6 11.0-0 Qf5 12.Qe2 Rb8 13.Nd7; 8.Bc6 bc6 9.Nd7 Qd7 10.Bb2 Qf5 11.0-0 Rb8 12.Bd4 Nf6 13.f3; 8.f4 ef3 9.Bc6 bc6 10.Qf3 Nf6 11.Nc3 Bd6 12.Nd7 Qd7 13.Ba3) 8...Nf6 9.Nd7 Qd7 10.Bf6 gf6 11.Nc3 Rg8 12.0-0 Bb4 13.Bc6; D) 7...Qc7 8.Nd7 (8.Bb2 Bb5 9.ab5 Nf6 10.Bd4 Bc5 11.Bc5 Qc5 12.Nc3 0-0 13.0-0; 8.f4 Bb5 9.ab5 Nf6 10.0-0 Bc5 11.d4 ed3 12.cd3 d4 13.Ra4) 8...Nd7 9.Bb2 a6 10.Bd7 Qd7 11.0-0 Nf6 12.Bf6 gf6 13.Qh5; E) 7...Bb5 8.ab5 Qg5 9.Qg4 Qg4 10.Ng4 h5 11.Ne5 Rh6 12.Nc3 Bd6 13.f4.

7.ab5 a6 8.Nf3 (8.Qh5 Nd7 9.Nd5 Qc8 10.Bb2 Qc4 11.Nc3 Ngf6 12.Qf3 e4 13.Qf5+/–) 8...Ne7? (better is 8...e4!? 9.Nd4 Nf6+/– 10.0-0 Qc7 11.f4 Bb4 12.Ba3 Bc3 13.dc3+=; 8...Bd6 9.Nd5 Nf6 10.Nf6 Qf6 11.0-0 0-0 12.d3 Nd7 13.ba6+/–; 8...Bb4 9.Ne5 (9.0-0 f6 10.Ba3 Ba3 11.Ra3 Ne7 12.Qb1 0-0 13.Qb3+/–) 9...Bc3 10.dc3 Ne7 11.c4 Qc7 12.Qd4 f6 13.Nd3+-; 8...Nd7 9.Nd5 (9.ba6 Ngf6 10.a7 Qb6 11.0-0 Ra7 12.Ra7 Qa7 13.Bb2+=) 9...Ngf6 10.Nf6 Qf6 11.ba6 Ra6 12.Bb2 Bd6 13.0-0+/–) 9.Ne5+- f6 (9...Nd7 10.Nd3+-) 10.Nd3 Nf5 (10...Nd7+-) 11.Qf3 g6 (11...Ne7 12.0-0+-) 12.Nd5 Nd7 13.Bb2 Ne5 (13...Bg7 14.N3f4 Kf7+-) 14.Nf6! (14.Nf6 Qf6 15.Be5+-) 1–0. oliver – game5, internet, 2011.

7.ab5 Nf6!?= 8.Bb2 Nbd7 9.Qf3 (9.Nh3 Bb4 10.0-0 0-0 11.f4 e4 12.Qe2 Nb6 13.Na2+=; 9.Nge2 Bd6 10.0-0 Nb6 11.Na4 Nc4 12.Bc3 0-0 13.f4=) 9...Nb6 10.Nge2 Bd6 11.d3 0-0 12.0-0 Qc7 13.Ng3=.

7.ab5 Nf6!?= 8.Nge2 A) 8...Bd6 9.0-0 (9.Ba3 d4 10.Na4 0-0 11.0-0 Re8 12.Bb2 a6 13.ed4=) 9...0-0 10.f4 e4 11.Qe1 Qc7 12.Qg3 Nbd7 13.Nd4+=; B) 8...d4 9.Na4 Bd6 10.0-0 0-0 11.Bb2 Qc7 12.ed4 Nbd7 13.de5+=; C) 8...Bc5 9.d4 (9.0-0 0-0 10.Ba3 Ba3 11.Ra3 d4 12.ed4 ed4 13.Na4=; 9.f4 e4 10.0-0 0-0 11.Ba3 Nbd7 12.Bc5 Nc5 13.Qe1=) 9...ed4 10.ed4 Be7 11.0-0 Nbd7 12.Ng3 0-0 13.Qf3+=; D) 8...Be7 9.Ba3 (9.f4 ef4 10.0-0 fe3 11.de3 0-0 12.Nf4 Nbd7 13.Nfd5=; 9.0-0 0-0 10.Bb2 Re8 11.Ng3 Nbd7 12.Nf5 Nb6 13.f4=) 9...Ba3 10.Ra3 0-0 11.0-0 d4 12.ed4 ed4 13.Na4=.

7.ab5 Nf6!?= 8.Qf3 Bb4 9.Nge2 (9.Bb2 0-0 10.Nge2 Qd6 11.0-0 Nbd7 12.Qg3 Bc3 13.Nc3=) 9...0-0 10.0-0 Qd6 11.Bb2 Nbd7 12.Qg3 Bc3 13.Nc3=.

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 44.Ng7 Ne3 45.Kb2 Nf1 46.h4 Ng3 47.hg5 hg5 48.Nh5 Nf1 49.Ka3 Ne3 50.Ka4 Ng4 51.Kb3 f5 52.Kc2 Nf6 53.Ng3 Ke6 54.Kd2 f4 55.Ne2 Kf5 56.Ng1 g4 57.Ke2 g3 58.Nh3 Kg4 59.Ng1 f3 60.Kf1 e3 Black prepares f2 61.Ke1 f2 62.Kf1 fg1Q 63.Kg1 Kf3 64.Kh1 e2 0–1. chooch555 – kim22, Live Game Caissa's Web, 2004. (=1.a4 d5 2.b4 e5 3.b5 c6)

7.0-0 A) 7...Nf6 8.Ba3 (8.Nc3 0-0 9.Ba3 Ba3 10.Ra3 a6 11.Bd7 Nbd7 12.a5 h6 13.Qb1; 8.Bb2 a6 9.Bd7 Nbd7 10.Nc3 0-0 11.Qe2 Re8 12.Qd1 Qa5 13.Ne2; 8.Bd7 Qd7 9.Nc3 Nc6 10.Nb5 Be7 11.d4 a6 12.Nc3 e4 13.Ne5; 8.Qe2 e4 9.Nd4 0-0 10.Bd7 Qd7 11.Ba3 Nc6 12.Bd6 Nd4 13.ed4) 8...Qc7 9.Bd6 Qd6 10.Nc3 0-0 11.Rb1 Nc6 12.Bc6 bc6 13.d4; B) 7...e4 8.Nd4 (8.Bd7 Qd7 9.Nd4 Nc6 10.Nc6 bc6 11.Bb2 f5 12.h3 Rb8 13.Bd4) 8...Nc6 9.Bc6 bc6 10.Ba3 c5 11.Nb5 Be7 12.d4 ed3 13.Qd3; C) 7...Bb5 8.ab5 Nf6 9.Nc3 0-0 10.Ba3 Qe7 11.Bd6 Qd6 12.Ra4 a5 13.ba6; D) 7...Ne7 8.Ba3 (8.Nc3 0-0 9.Ba3 Bf5 10.Nh4 Be6 11.Qh5 g6 12.Qh6 Nbc6 13.f4; 8.e4 a6 9.Be2 0-0 10.Nc3 d4 11.Nd5 Nbc6 12.c3 f5 13.Qb3; 8.c4 a6 9.Ba3 Ba3 10.Bd7 Nd7 11.Na3 e4 12.Nd4 0-0 13.cd5; 8.Bd7 Qd7 9.Ba3 Nbc6 10.Bd6 Qd6 11.Nc3 0-0 12.Rb1 b6 13.h3) 8...Ba3 9.Na3 Nbc6 10.c4 e4 11.Ng5 h6 12.cd5 hg5 13.dc6; E) 7...a6 8.Bd7 (8.Ba3 Ba3 9.Bd7 Nd7 10.Ra3 Ngf6 11.Nc3 0-0 12.a5 Rc8 13.h3; 8.Be2 Nf6 9.d4 e4 10.Ne5 Qc7 11.Ba3 Be5 12.de5 Qe5 13.Nd2) 8...Nd7 9.Nc3 Ngf6 10.Ba3 Ba3 11.Ra3 0-0 12.a5 Rc8 13.h3.

7.Ba3 A) 7...Ba3 8.Na3 (8.Ra3 a6 9.Bd7 Nd7 10.0-0 Ngf6 11.Nc3 0-0 12.a5 Rc8 13.h3) 8...a6 9.Bd7 Nd7 10.Qb1 Qc7 11.Qb4 Ngf6 12.0-0 e4 13.Nd4; B) 7...Qe7 8.c4 e4 9.Nd4 Nc6 10.cd5 Nd4 11.ed4 Ba3 12.Na3 Nf6 13.Qb3; C) 7...Qc7 8.c4 e4 9.Nd4 Nc6 10.Nc3 Ba3 11.Ra3 Nd4 12.ed4 Nf6 13.cd5; D) 7...Bb5 8.ab5 (8.Bd6 Qd6 9.ab5 Nf6 10.Nc3 Nbd7 11.Qc1 d4 12.ed4 ed4 13.Ne2) 8...Nf6 9.Nc3 0-0 10.0-0 a5 11.ba6 Ra6 12.Bd6 Qd6 13.Qe2.

7.Bb2 A) 7...Bb5 8.ab5 Nd7 9.0-0 Ngf6 10.Nc3 0-0 11.Qe2 Re8 12.e4 d4 13.Na4; B) 7...Qe7 8.c4 (8.g4 Nf6 9.g5 Ne4 10.d3 Ng5 11.Ng5 Qg5 12.Qf3 Nc6 13.Qd5; 8.Nc3 Nf6 9.Bd7 Nbd7 10.Nb5 0-0 11.Nd6 Qd6 12.Ba3 Nc5 13.Ne5; 8.0-0 Nf6 9.c4 e4 10.Nd4 0-0 11.cd5 Nd5 12.Nc3 Nc3 13.Bc3; 8.Qe2 Nf6 9.Nc3 e4 10.Bd7 Qd7 11.Nd4 Be5 12.0-0 0-0 13.Qb5) 8...Nf6 9.Nc3 dc4 10.Bc4 0-0 11.Nb5 e4 12.Nd6 Qd6 13.Ba3; C) 7...Qc7 8.Nc3 (8.Bd7 Nd7 9.Nc3 Ne7 10.Nb5 Qc6 11.Nd6 Qd6 12.0-0 Nc6 13.Ba3; 8.c4 Bb5 9.ab5 dc4 10.Be5 Be5 11.b6 Qb6 12.Ne5 Qe6 13.Qa4) 8...Ne7 9.Bd7 Qd7 10.e4 d4 11.Nb5 Nbc6 12.0-0 0-0 13.c3; D) 7...a6 8.Ne5 (8.Bd7 Nd7 9.Nc3 Ngf6 10.0-0 0-0 11.Ba3 Ba3 12.Ra3 Qa5 13.Qc1; 8.Be2 Nc6 9.c4 Nf6 10.Nc3 dc4 11.Bc4 0-0 12.Ng5 Na5 13.Bd3; 8.Ba3 Ba3 9.Bd7 Nd7 10.Ra3 Ngf6 11.Nc3 Qe7 12.Qc1 0-0 13.0-0) 8...ab5 9.Nd7 Nd7 10.Bg7 Be5 11.Bh8 Bh8 12.Nc3 Qa5 13.Rb1.

7.Nc3 A) 7...Nc6 8.Nd5 (8.Ba3 Ba3 9.Ra3 Nf6 10.Rb3 Qc7 11.0-0 0-0 12.Bc6 Bc6 13.h3; 8.0-0 Nf6 9.Ba3 Ba3 10.Ra3 0-0 11.Rb3 Qc7 12.Bc6 Bc6 13.h3; 8.Bc6 Bc6 9.Nb5 Ne7 10.Nd6 Qd6 11.Ba3 Qc7 12.0-0 0-0 13.d4) 8...e4 9.Bb2 ef3 10.Qf3 Kf8 11.0-0 Qg5 12.e4 Nge7 13.Ne7; B) 7...Nf6 8.Ba3 (8.0-0 0-0 9.Ba3 Ba3 10.Ra3 Qc7 11.h3 Nc6 12.Bc6 bc6 13.d4; 8.h3 e4 9.Nd4 Nc6 10.Ba3 Nd4 11.ed4 Ba3 12.Ra3 Bb5 13.ab5; 8.Bd7 Nbd7 9.0-0 0-0 10.Bb2 Qe7 11.Nb5 Rfe8 12.Qe2 h6 13.h3; 8.Qe2 e4 9.Nd4 Nc6 10.Ba3 Ba3 11.Ra3 0-0 12.Bc6 bc6 13.Qa6) 8...Ba3 9.Ra3 0-0 10.0-0 Qc7 11.Qe2 a6 12.Bd7 Nbd7 13.a5.

7.c4 A) 7...Nf6 8.cd5 (8.Nc3 Bb5 9.ab5 dc4 10.Qe2 Nbd7 11.Qc4 0-0 12.0-0 Qe7 13.d3) 8...Nd5 9.Qb3 Nc7 10.Nc3 Nb5 11.Nb5 Bb5 12.ab5 e4 13.Nd4; B) 7...e4 8.Nd4 Nc6 9.cd5 Nd4 10.ed4 Nf6 11.Nc3 0-0 12.0-0 Re8 13.Qb3.

4.Bb2 Bc5 5.e3 d6 6.Nf3 =+.

4.Bb2 Bc5 5.e3 e4 6.c4 (6.d3 Qa5 7.Qd2 Bb4=) 6...d5+= 7.Qb3 (7.cd5 cd5 (worse is 7...Qd5 8.Bf6 gf6 9.Nc3=) 8.d3 Nbd7+=) 7...d4 8.ed4 Bd4 9.Bd4 Qd4 10.Ra3 (10.Qc3 c5+=) 10...Bg4 (10...Ng4 11.Nh3–/+) 11.Be2 (11.f3 Bf5+=) 11...Nbd7 12.Qc3 Qc3 13.Rc3 Be2 14.Ne2 Nc5 15.0-0 (15.Rg3!?–/+) 15...Na4-+ 16.Rg3 0-0 (16...Rg8 17.bc6 bc6 18.d4-+) 17.d3 (17.bc6 bc6 18.Nd4 c5-+) 17...ed3 (17...cb5 18.cb5 a6 19.ba6 ba6 20.Rd1-+) 18.Rd3–/+ Nc5 19.Rd6 (19.Rd4 cb5 20.cb5 Ne6–/+) 19...Nfe4 20.Rd4 (20.Rdd1 cb5 21.cb5 a6-+) 20...Rfd8 (20...cb5 21.f3 Nf6 22.cb5–/+) 21.Rfd1 (21.f3 Rd4 22.Nd4 Rd8–/+) 21...Rd4 22.Rd4 (22.Nd4 cb5 23.cb5 a5–/+) 22...cb5 (22...a6 23.Nbc3 ab5 24.cb5 Ra1 25.Nd1-+) 23.cb5 (23.f3 Nf6 24.cb5 a5–/+) 23...Nf6 (23...a6 24.Nbc3 ab5 25.Kf1-+) 24.Nbc3 h6 (24...a5 25.ba6 ba6 26.Kf1–/+) 25.Nd5 (25.Rc4 Rc8–/+) 25...Nd5 26.Rd5 Nb3 (26...Re8 27.Kf1 Rc8 28.Nd4–/+) 27.Rd7+= a6 28.Rb7 (28.b6 Nc5 29.Re7 Kf8–/+) 28...ab5 The mate threat is Ra1 29.g3 Ra5 30.Nc3 (30.h3 Nc5 31.Rc7 Ra1 32.Kg2 Ne6–/+) 30...Nd4 31.f4 g5 32.f5 (32.fg5 hg5 33.Ne4 Ra2–/+) 32...Nf5 33.Rb5 Rb5 34.Nb5 h5 35.Kf2 g4 36.Nc3 Kg7 37.Ne4 h4 38.gh4 Nh4 39.Kg3+= ½–½. Wittner,Eduard – Hiller,Kai, Baden–ch AT4, 1994.

4.Bb2 Bc5 5.Be5 d5 6.d4+= Bb6 (6...Nbd7 7.Bf4 Ne4 8.Nf3+=) 7.e3 Qe7 (7...Ba5 8.c3+=) 8.Bd3 Qb4 (8...Nbd7 9.Bf6 Nf6 10.Nf3+/-) 9.Nd2 Bg4 (9...Nbd7 10.bc6 bc6 11.Ngf3+/-) 10.Ngf3 (10.f3 Be6 11.Bf6 gf6+-) 10...Nbd7+/- 11.0-0 (11.bc6 bc6 12.Qb1 Qc3+/-) 11...Ne5+= 12.de5 Bf3 (12...Nd7 13.h3 Bh5 14.Qb1+=) 13.Nf3+/- (13.gf3?! Nd7=; 13.ef6?? Bd1 14.fg7 Rg8 15.Rfd1 Rg7 16.bc6 bc6-+) 13...Ne4 14.a5 (14.Be4 Qe4 15.a5 Bc5+/-) 14...Nc3 15.Qc1 Bc5 16.bc6 bc6 17.Qd2 d4? (better 17...Rb8+=) 18.ed4+- Qb7?? (18...Bd4 19.Rab1! Qc5+-) 19.Qc3 Bb4 (19...Be7 20.Rfb1 Qd7 21.Bf5+-) 20.Qb3 Rb8 21.Rab1 Ke7 (21...Qc8 22.Qa4 Be7 23.Qc6 Qc6 24.Rb8 Bd8 25.Bb5 Qb5 26.Rb5+-) 22.c3 Ba5 (22...h6+-) 23.Qa3 c5 24.Rb7 Rb7 25.Qc5 Kd7 1-0. DEFFM – GuestXSMT, freechess.org, 2020.

4.Bb2 Bc5 5.Be5 Bf2 6.Kf2 Ng4 7.Ke1 Ne5 8.Nc3 =+.

4.Bb2 Qc7 5.c4 Bc5 6.e3 0-0 7.Nf3 Re8 8.Be2 d5 9.cd5 Nd5 (9...cd5 10.0-0 e4 11.Nd4=) 10.Qc2 Bd6 (10...cb5 11.Be5 Qe7 12.ab5+=) 11.Ng5+= Nf6 (11...g6 12.Nc3 Qe7 13.Nge4+=) 12.Bc4 Rf8 (12...Be6 13.Ne6 fe6 14.Nc3+=) 13.Nc3+/- h6 14.Nce4 (better 14.Nge4 Ne4 15.Ne4 (15.Qe4?! Nd7=) 15...cb5 16.ab5+/- (16.Nd6?! bc4 17.Be5 Be6=)) 14...hg5?? (14...Nbd7 15.h4 Ne4 (15...hg5?? 16.Nf6 Nf6 17.hg5+-) 16.Ne4 Be7+/-) 15.Nf6+- gf6 16.Qg6 Kh8 17.Qf6 (17.Qf6 Kg8 18.h4+-) 1-0. DEFFM – GuestNZRN, freechess.org, 2021.

4.Bb2 Qc7 5.e3 d5 6.c4 Bb4 7.Qb3 a5 (7...Qd6 8.cd5 cd5 9.a5=) 8.Nf3= Nbd7 9.Be2 h6 (9...e4 10.Nd4=+) 10.0-0 e4 11.Nd4 Nc5 (11...dc4 12.Qc4 Ne5 13.Qc2=) 12.Qc2 0-0 13.cd5 cd5 14.Nc3 Be6 15.f3 Rac8 16.fe4 (16.Na2 Qd6+=) 16...Bc3 (16...Nce4 17.Ne4 Qc2 18.Nf6 gf6 19.Nc2 Rc2 20.Bd4=) 17.Qc3+= Nfe4 18.Qc2 Qe7 19.d3 Ng5 20.Ba3 Bd7 21.Qd2 b6 22.Rac1 Nge6 (22...Rfe8!?+=) 23.Nf5 Qg5 24.h4 Qd8 25.Qa2 Nc7 (25...Re8 26.Qd5 Na4 27.Rc8 Bc8 28.Ne7 Kh8 29.Qd8 Rd8 30.Rf7+/-) 26.d4 (26.Bc5?! bc5 27.Nd6 Rb8 28.Rc5 Be6+=) 26...Ne4?? (26...Bf5 27.dc5 Qe7 28.Rf5 Qe3 29.Kf1 bc5 30.Rc5 Ne6 31.Rcd5 Nd4+-) 27.Ne7 Kh8 (27...Qe7 28.Be7 Rfe8 29.Ba3+-) 28.Nc8 Bc8 (28...Re8 29.Nd6 Be6 30.Nf7 Bf7 31.Rf7+-) 29.Bf8 (29.Bf8 Be6 30.Bd3+-) 1-0. onur604 (2320) - Samarthjain4554 (2110), Casual Rapid game, 2021.

4.Bb2 e4 5.c4 =+.

4.Bb2 e4 5.e3 d5 6.d3 Bd7 (6...Bb4 7.c3 Ba5 8.Nd2=+) 7.de4=+ Ne4 8.Bd3 Qa5 9.c3 cb5 (9...Nc5 10.Be2=) 10.ab5= Qb6 11.Ne2 1-0. DEFFM – GuestYCGS, freechess.org, 2021.

4.Bb2 Qe7 5.e3 cb5 6.ab5 d5 7.Nf3 Bg4 (7...Nbd7 8.Nc3+=) 8.Be2 (8.Nc3 Nbd7 9.h3 Bf3 10.Qf3 e4+=) 8...Bf3 9.Bf3 e4 10.Be2 Qc7 (10...Nbd7 11.c4 dc4 12.Na3+=) 11.Bf6 gf6 12.Nc3 Bd6? (better 12...Qe5+/-) 13.Nd5+- Qd8 14.Bc4 0-0 (14...h5+-) 15.Qg4 Kh8 16.Qe4 Be5 (16...Re8 17.Qf5 Nd7+-) 17.Bd3 f5 18.Qf5 Qh4 19.Qe5 f6 20.Qe7 Qh6 21.Qb7 (21.Qb7 Nd7 22.Qd7+-) 1-0. DEFFM – MrScrumps, freechess.org, 2021.

4.e3 d5 5.Ba3 +=.

4.e3 d5 5.Nf3 Bg4 =+.

4.e3 d5 5.h3 d4 (5...Bd6 6.Nf3–/+) 6.Qf3 (6.Bb2 Bc5=+) 6...de3 (6...e4 7.Qe2–/+) 7.Qe3 Bd6 8.Bc4 0-0 9.Bb2 (9.Nc3 Re8=+) 9...Re8 10.Bc3 (10.Ne2 Bf5 11.Qb3 Be6=+) 10...b6 (10...Bf5 11.d3–/+) 11.Nf3 Bc5 (11...e4 12.Ng5 Nd5 13.Bd5 cd5 14.a5=+) 12.Qe2= e4 (12...Bd4=) 13.Nh2 (13.Ng5 Nd5 14.Qh5 (14.Ne4 Bf5 15.d3 Nc3 16.Nbc3 Bb4-+) 14...Nc3 15.Bf7 Kf8 16.Be8 (16.dc3?! e3 17.f4 h6 18.Nh7 Ke7+-) 16...Qe8 17.Nh7 Ke7 18.Qg5 Kf7 19.Nc3+-) 13...Be6 (13...Nd5 14.0-0=+) 14.Be6=+ Re6 (< 14...fe6 15.Ng4+=) 15.Qg4?? (better is 15.0-0=+) 15...Ng4-+ (16.Ng4 a6-+) 0–1. riverborne – circonio, Live Game Caissa's Web, 2005.

4.e3 g6 5.c3 Bg7 6.Na3 (6.d4 e4=) 6...0-0 7.Bb2 b6 8.Nf3 Re8 9.Be2 Bb7 10.0-0 d5 11.d3 c5 12.h3 Nbd7 13.Nh2 e4 14.d4 c4 15.Nc2 Bf8 (15...Qc7 16.Ba3+=) 16.f4 (16.Ba3 Ba3 17.Ra3 a6=) 16...Bd6 (16...ef3 17.Bf3 a6 18.Ng4+=) 17.Bg4 (17.Ba3 Ba3 18.Ra3 a6=) 17...Ng4 18.Ng4 Nf6 19.Ne5 Be5 (19...Nh5 20.Kh2=) 20.de5 Nh5 21.Qe1 Ng7 22.Nd4 Ne6 23.f5 Nd4 24.ed4 Qg5 (24...a6!?=) 25.Bc1+= Qh5 26.Qg3 Bc8 27.f6 (27.e6 f6+=) 27...Be6 28.Rf4 (28.Be3 a6=) 28...g5 (28...a6!? 29.Ba3 g5=) 29.Rf1= Kh8 (29...h6 30.Ba3=) 30.h4 (30.Qg5!? Qg5 31.Bg5+/–) 30...Qh4= 31.Qh4 gh4+= 32.Bg5 Rg8 33.Bh4+= Rg4 34.Be1 h5 35.Ra2 h4 36.Kh2 Rag8 37.Rh1 Bf5 38.Kg1+/– R8g6 39.Rh4 Rh4 40.Bh4 Rg4 41.Be1 e3 42.Kh2 Bd3 43.a5+/– Rf4 44.ab6 ab6 45.Ra6 e2 46.Rb6 Rf1 47.Bg3 Rb1?? 48.Rb8 Kh7 49.b6 Rb3?? 50.b7 Bf5 51.Bf2 Be6 52.g3?? Rb2? 53.Be1+- Rb1 54.Bf2 Rf1?? 55.Be1 Re1= 56.Rh8 Kh8 57.b8Q Kh7 58.Qb2?? Rh1!-+ 59.Kh1 e1Q 60.Kg2 Qe4 61.Kh2 Qg4 62.Qc2 Kh6 63.Qd2 Kg6-+ 64.Qc2? Qf5 65.Qf5?? Kf5 66.Kg2 Ke4 67.Kf2 Kd3 68.Kf3 Kc3 69.Kf4 Kd4 0–1. caliu – lout62001 (1620), gameknot.com, 2013.

(...) (---> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 c6).

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c6 5.a4).

5.Na3 0-0 (5...e4 6.e3=) 6.Nc4 Bb4 7.c3 Be7 8.Ne5 d6 9.Nd3 d5 10.e3 Bg4 (10...Ne4 11.Nf3+=) 11.Nf3 Ne4 12.Be2 Nd7 13.h3 Bf5 (13...Be6!?+-) 14.Nd4 Be6 (14...Nd6 15.bc6 Bd3 16.Bd3+-) 15.bc6 bc6 16.Nc6 Qe8 17.Nd4 (17.Ne7 Qe7 18.Ba3 Nd6+-) 17...Rb8 18.Ne6 (better 18.Qc2!?+-) 18...fe6+- 19.0-0 Nf2?? (19...Ne5 20.Ne5 Rb2+-) 20.Rf2+- (20.Nf2 Rb2 21.Bb5 a6+-) 20...Rf2 21.Kf2 (21.Nf2?! Rb2 22.Bb5 a6+-) 21...Bh4 (21...Nb6 22.Bh5 g6 23.Bg4+-) 22.Kg1 Qg6 (22...Be7 23.a5+-) 23.Ba3 Bf6 (23...Bg3 24.Nf4 Bf4 25.ef4+-) 24.Nf4 Qg3 (24...Qf7 25.Bg4 Re8 26.Rb1+-) 25.Bg4 Be5 (25...Nf8 26.Bf8 Rf8 27.Be6 Kh8+-) 26.Be6 Kh8 27.Bd7 Bf4 28.ef4 Qf4 29.Qf3 (29.Qf3 Qf3 30.gf3+-) 1–0. DEFFM – GuestCTDX, freechess.org, 2019.

5.e3 0-0 6.Be2 a6 7.Nh3 (7.Nf3 e4 8.Nd4 Be5=) 7...ab5 8.ab5 Ra1 9.Ba1 e4 (9...Bc7 10.f4 d6 11.fe5 de5 12.Nf2=+) 10.0-0 (10.Ng5 Qe8+=) 10...Re8 11.d3 Be5 12.Nc3 (12.Be5!? Re5 13.Nf4=) 12...d5=+ 13.de4 (13.Nf4 Qc7=+) 13...Bh3-/+ 14.gh3 de4 15.Qd8 Rd8 16.Bc4 h6 17.Ne2 (17.Rb1 Rc8 18.Bb3 Nbd7-/+) 17...Ba1 (17...Nbd7 18.Nd4-/+) 18.Ra1 cb5 19.Bb5 Nc6 20.Bc6 bc6 21.Nd4 ½-½. onur604 (2320) - Crypton98 (2310), Casual Rapid game, lichess.org, 2021.

5.e3 0-0 6.Nf3 Qa5 7.Ne5+/- (7.Be5?! Be5 8.Ne5 cb5=) 7...cb5 (7...Be7 8.Be2+/-) 8.ab5 Qb5?? (better 8...Qd8+/-) 9.Bb5+- a6 (9...Be7 10.Qf3 d5 11.Bd4+-) 10.Ng4 Be7 11.Nf6 Bf6 12.Bf6 gf6 13.Qg4 Kh8 14.Qf5 Nc6 15.Bd3 h6 (15...b5 16.Qh7) 16.Qh7 1-0. DEFFM – GuestDQTX, freechess.org, 2021.

5.e3 cb5 6.ab5= Qb6 (6...0-0 7.Nf3 e4 8.Nd4=) 7.c4 (7.d4 e4+=) 7...a6 (7...0-0 8.Nf3 Qc7 9.Ne5 Be5 10.b6 Qb6 11.Be5+=) 8.Nf3 (8.d4 ed4 9.Bd4 Bc5+=) 8...e4 (8...Qc7 9.Nc3+=) 9.Ng5 h6 10.Bf6 gf6 (10...hg5!? 11.Bg7 Rh4+-) 11.Ne4+- Be5 12.d4 f5 13.c5 Qg6 14.Nec3 Bf6 15.Qf3 0-0 16.Bd3 d6 17.cd6 Bd7 18.Qb7 Bb5 19.Bb5 ab5 20.Ra8 Nd7 21.Rf8 Kf8 22.0-0 Ke8 23.Nb5 h5 24.Qc8 Bd8 25.Nc7 Kf8 26.Qd8 Kg7 27.Qd7 h4 28.Ne6! Kh6 29.Nf4 Qf6 30.Qc7 Qg7 31.d7 Kg5 32.d8Q (32...Qf6 33.Qf7 Qd8 34.Qg7) 1–0. Sommer,Roman – Ohler,Frank, Hassloch op–B, 1999.

5.e3 Bc7 6.Nf3 e4 7.Nd4 d5 8.Be2 0-0 9.f4 h6 10.0-0 Nh7 11.c4 Qd6 (11...dc4!? 12.Bc4 Nf6=) 12.bc6+/- bc6 13.Ba3 c5 14.Nb5 Qb6 (14...Qe7 15.N1c3 Nf6 16.Nd5 Nd5 17.cd5+/-) 15.cd5 (15.N1c3 Bd6+-) 15...a6 (15...Nf6 16.a5! (worse 16.Nc7 Qc7 17.Qc2 Na6+/-) 16...Qa5 17.N1c3+- (17.Nc7?! Qc7 18.Nc3 Rd8=)) 16.Nc7+- Qc7 17.Qc2 Nd7 18.Qe4 Bb7 (18...Nhf6 19.Qc4+-) 19.Nc3 Nhf6 20.Qd3 Nb6 21.e4 Rfe8 22.d6 (22.a5 c4 23.Qf3 Na4 24.Na4 Ne4+-) 22...Qd7 (22...Qc6 23.Bf3 c4 24.Qb1+-) 23.e5 (23.e5 Nfd5 24.a5 (24.Bc5?! Nc3 25.Qc3 Na4+-) 24...Nc3 25.dc3+- (25.ab6?! Ne2 26.Qe2 Qd6+-); worse 23.Bc5 Ne4 24.Bb6 Nc3 25.dc3 Qc6+-) 1-0. onur604 (2320) - dumab1101 (2115), Casual Rapid game, 2021.

5.Nf3 e4 6.Nd4 0-0=.

4.Bb2 Bg7 5.f4 Qe7 6.Nf3+= f6 7.fe5 fe5 8.e4 d6 (8...Qb4 9.Qc1 (worse 9.Be5 Be5 10.Ne5 Qd4–/+) 9...Qe4 10.Be2+=) 9.Bc4 Nd7 (9...Nf6 10.Nc3+-) 10.0-0 Nb6 11.Bb3 d5? (better 11...Nf6!? 12.Nc3 Be6+-) 12.ed5+- cd5 13.Ne5! Be5?? (13...Nf6+-) 14.Be5 Qe5 15.Re1 Qe1 (15...Qe7 16.Re7 Ne7+-) 16.Qe1 Ne7 17.a5 Nd7 1–0. GuestFPDX – GuestTSYX, freechess.org, 2020.

4.e4 Bg7 5.Bb2 d6 6.c4 b6 7.Nf3 Bb7 8.Qc2 Nf6 9.d3 0-0 10.h3 Nbd7 11.Be2 Qc7 12.Na3 Rfe8 13.0-0 Nc5 14.Rfe1 Ne6 15.Rad1 c5 16.Nb1 a6 17.Nc3 Nf4 18.Ra1 Qd7 19.Bc1 Ne2 20.Re2 ab5 21.cb5 d5 22.ed5 Nd5 23.Nd5 Bd5 24.Ne1 f5 25.Bb2 Qf7 26.Qd2 Qd7 27.Nc2 Bb3 28.Rae1 Qd6 29.f4 Bh6 30.Be5 Qd7 31.Na3 Ra4 32.Bb2 Re2 33.Qe2 Bf4 34.Qe8 Qe8 35.Re8 Kf7 36.Rh8 h6 37.Rh7 Kf8 38.Kf2 Bf7 39.g3 Rb4 40.Bf6 Bg5 41.Be5 Rb3 42.Nc4 Rd3 43.Nd6 Rd6 44.Rh8 Ke7 45.Bd6 Kd6 46.Rb8 Kc7 47.Ra8 Bc4 48.Ra7 Kd6 49.Rg7 Bb5 50.Rg6 Kc7 51.h4 Bc1 52.Rf6 Bd3 53.Kf3 c4 0–1. purplegadge (1795) – white70 (1730), gameknot.com, 2011.

4.a4 Ne7 (4...d5 5.Nf3 Bd6 6.Nc3=+) 5.c4 (5.e4 d5=) 5...g6 (5...d5 6.Nf3 e4 7.Nd4=+) 6.e4 (6.d4 e4=) 6...Bg7 (6...d5 7.d4=) 7.Nf3 0-0 8.Be2 (8.d4 d5=) 8...a6 (8...d5 9.cd5 cd5 10.d3=) 9.Nc3 (9.d4 ed4 10.Bd4 c5 11.Bg7 Kg7+=) 9...Rd8 (9...f5 10.Qb3=) 10.Qb3 (10.0-0 d5+=) 10...ab5= 11.ab5 Ra1 12.Ba1 d5 13.b6 Qd7 (13...Qd6 14.0-0=) 14.0-0 d4 15.Na4 Na6 (15...d3 16.Bd1 f6 17.Nc5+/–) 16.d3 (16.c5!?+=) 16...Qd6 (16...Qe6 17.Bb2=) 17.Bb2 Nc5?? (better is 17...Be6=) 18.Nc5+- Qc5 19.Ba3 Qa5 20.Be7 Re8 21.Bd6 Be6 22.Qb2 Qa8 23.Be5 Be5 24.Ne5 Qd8 25.Nf3 c5 26.Nd2 f5 27.Bf3 Qd7 28.Ra1 Qd6 29.Ra5 Qe5 30.g3 h5 31.Qa3 Rc8 32.Ra8 Kg7 33.Rc8 Bc8 34.Nb3 Bd7 35.Qc5 Qc5 36.Nc5 Bc6 37.Ne6 Kf6 38.Nd4 fe4 39.Nc6 ef3 40.Nd8 (40...g5 41.c5+-; 40.Na5 Ke7+-) 1–0. Schwichtenberg,Juergen – Tiede,Gustav, Hessen–ch Seniors, 2001.

4.e4 cb5 5.Nf3 (5.Nc3 Nf6 6.Nb5 Qc5+=) 5...Nc6 (5...b4 6.Be5 d6 7.Bb2+=) 6.Bb5+= d6 (6...Nf6 7.0-0 d6 8.d4 ed4 9.Nd4+=) 7.d4 (7.Nc3 Nf6 8.0-0 a6=) 7...ed4+= 8.Nd4 (8.Bd4 Be6+=) 8...Bd7 (8...Nf6 9.Nc3 a6 10.Be2+=) 9.0-0 (9.Nc3 Nf6+/–) 9...0-0-0 (9...Nf6 10.Nc3 Be7 11.Nd5 Nd5 12.ed5+/–) 10.Nc3 Nd4 (10...Nf6 11.Nc6 Bc6 12.Bc6 Qc6 13.Nd5 Nd5 14.ed5+/– (< 14.Qd5 Qd5 15.ed5 Kb8+=)) 11.Bd7+- Qd7 (11...Rd7 12.Nd5 Qc4 13.Bd4+/–) 12.Qd4 Kb8 13.Rab1 a6? (13...Nf6 14.Ba3 d5 15.Bf8 Rhf8 16.ed5 Nd5 17.Nb5+-) 14.Ba1 (14.Bc1!? Nf6 15.Be3 Kc8+-) 14...Nf6 (14...Rc8 15.Qd3+-) 15.Rb6 d5? (15...Rc8 16.Rfb1 Rc6+-) 16.Rfb1 (16...Rc8 17.Nd5+-) 1–0. wesolyPolak (1790) – ridha (1620), GameColony.com, 2002.

4.e4 d5 5.Nf3 Bd6 6.ed5 cd5 7.Ne5 Ne7 +=.

4.e4 d5 5.Nf3 de4 6.Ng5 = (6.Be5? Qe7 7.Bd3 ef3-+).

4.Nf3 d6=.

4.Nf3 e4 5.Nd4 Nf6=.

4.Nf3 f6 5.bc6 dc6 6.e4 Bg4=.

4.Nf3 f6 5.e4 Bc5 6.Bc4 (6.d4 ed4 7.Bd4 d6+=) 6...Qb6 (6...cb5 7.Bb3=) 7.d4 ed4 8.Bd4 cb5 9.Bg8 Rg8 10.c3 Nc6 11.Bc5 Qc5 12.0-0 Kf7 13.Qb3 Qc4 14.Nbd2 (14.Na3!? Qb3 15.ab3=) 14...Qb3=+ 15.ab3 d6 16.c4 b4 17.Rfc1 a5 18.c5 dc5 19.Rc5 Be6 20.Nc4 (20.Kf1!?–/+) 20...Bc4 21.Rc4 Rgd8 22.e5 Rd3 23.ef6 Rad8 24.fg7?? (better is 24.Kf1 Rb3 25.fg7 Kg7 26.Rg4 Kf6 27.Rf4 Kg6 28.Rg4 Kf5 29.Rg7–/+) 24...Rd1 25.Ne1 Ra1 26.Re4 Rdd1 27.Kf1 Kg7 28.f4 (28.f3 Nd4 29.Kf2 Ra2 30.Kf1 Nb3-+) 28...Kf6 (better is 28...a4 29.Kf2 Ra2 30.Kf1 ab3 31.Re3-+) 29.Kf2 Re1 (better is 29...a4 30.ba4 Ra2 31.Re2-+) 30.Re1 Re1 31.Ke1 Nd4 32.g4 Nb3 33.h4 (33.Kd1-+) 33...a4 34.Kd1 Nd4 (35.Kd2 a3-+) 0–1. Hirt,Robert – Wartig,Wolfgang, corr DDR, 1987.

4.Nf3 f6 5.e4 d5 6.ed5 (6.Qe2 Nd7=) 6...cd5 7.d4 e4 8.Nfd2 Bd6 (8...f5 9.c4=) 9.Qh5+= Qf7 10.Qf7 Kf7 11.c4 Be6 (11...f5 12.cd5 Ne7 13.Nc3+=) 12.cd5+/– Bd5 (12...Bf5 13.Nc4 Bb4 14.Bc3+/–) 13.Nc3+- Ne7 14.Nd5 Nd5 15.Bc4 Ke6 16.Ne4 Bb4 17.Kf1 Nd7+/– 18.Bb3 N7b6 19.Nc5 Bc5? 20.dc5 Nd7 21.Rd1 (21...Nc5 22.Bd5 (22.Rd5?! Nb3 23.Rd3 Na5=) 22...Kf5 23.Ba3+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

(--> 1.b4 e5 2.Bb2 d6 3.b5 c6).

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 c6 4.b5).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c6).

4.Nf3+= cb5 5.Ne5 Be5 6.Be5 Nf6 7.Nc3 Qa5 8.e3 a6 9.Bf6 gf6 10.Qg4 Nc6 11.Qg7 Rf8 12.Nd5 b4 13.Nf6 Ke7 14.Nh7 Qe5 15.Qf8 Ke6 16.f4 Qc5?? 17.Ng5 (17...Qg5 18.fg5+-; Better is 17.Qc5 d6 18.Bc4 Ke7 19.Qg5 Kd7 20.Nf6 Kc7 21.Bf7 Kb6+-) 1–0. Taulien,Hans_Juergen – Boese,Fee, remoteschach.de, 2002.

4.Nf3+= f6 5.e4 a6 6.a4 a5 7.d4+/– Bc7 8.de5 fe5 9.Ne5 Nf6 10.Ng4 d6? 11.Nf6+- gf6 12.Qh5 Ke7 13.Bc4 Be6 14.Bf6! Kf6 15.Qh6 Kf7 16.Qe6 (16...Kg7 17.Qf7 Kh6 18.Ra3+-) 1–0. Taulien,Hans_Juergen – Ritschel,Stephan, remoteschach.de, 2002.

4.cb5 a6 5.Bb2 d6=.

4.cb5 a6 5.d4 Qa5 (5...ed4!? 6.Qd4 ab5 7.Qe5 Ne7 8.Qb5 Nec6=) 6.Bd2+= Qb5 7.Nc3 Qc4 8.de5 Qd4? (better is 8...Qe6!?+/–) 9.Nf3+- Qc5 10.e4 Nc6 (10...Qc6 11.Nd5 Bc5 12.Rc1+-) 11.Nd5 Kd8 (11...Rb8 12.Rc1 Qa3 13.Nc7 Kd8 14.Nd5+-) 12.Rc1 Qa7 (12...Qa3+-) 13.Be3 Qb8 14.Bb6 Ke8 15.Nc7 Ke7 (15...Qc7 16.Bc7 Bb4 17.Nd2 b5+-) 16.Qd6 Kd8 17.Qf8 1–0. Pierred (2170) – Fekka, Rated game, 2005.

4.cb5 a6 5.e3 ab5 (5...d5 6.d4 Bd6 7.Nf3=+) 6.Bb5 (6.Bb2 Nc6=) 6...Nc6 (6...Qg5 7.Qf3=) 7.Nc3 (7.Bb2 Nge7=) 7...Nf6 (7...d5 8.Nf3 Bg4 9.h3 Bf3 10.Qf3=) 8.Nge2 Ba3 (8...d5 9.d4 Bd6 10.de5 Be5 11.0-0=) 9.0-0 Bc1 (9...0-0 10.Ba3 Ra3 11.f4=) 10.Qc1 (10.Rc1 d5=) 10...0-0 11.a4 (11.d4 d6=) 11...Na5 (11...Qa5 12.d4=) 12.Rb1 d5 13.d4 e4 (13...Bf5 14.Rb2 e4 15.Nf4=) 14.Qa3 (14.f3 ef3 15.Rf3 Bg4=) 14...Bd7= 15.Qb4 (15.Qa2 Bc6=) 15...Bb5 16.Nb5 (16.Qb5 Qd6=) 16...Nc4 17.Rfc1 Ra5 (17...Qa5 18.Qa5 Ra5 19.Nc7=) 18.Nbc3 Nd6 (18...Nd2 19.Nd5 Nf3 20.gf3 Nd5 21.Qb7 ef3 22.Ng3+=) 19.Rc2 Qc7 20.Qb6 (20.Nf4 Rc8+=) 20...Rc8 21.Qc7 (21.Qb3 Qd7=) 21...Rc7 22.Rcb2 h6 (22...Kf8 23.Nb5 Nb5 24.Rb5 Ra4 25.Nf4=) 23.h3 (23.Rb6 Nfe8=) 23...g5 (23...Kf8 24.Nb5 Nb5 25.Rb5 Ra4 26.Rb7 Rb7 27.Rb7 Ra1 28.Kh2=+) 24.Rb4 (24.Rb6 Nfe8=) 24...Nfe8 (24...h5 25.Rb6 Nfe8 26.Nb5=) 25.g3 (25.Rb6 f5=) 25...f5=+ ½–½. Hoelldorfer,August – von Godin,Hans, 6sen.BayEM Schney, 1994.

4.cb5 b6 5.Bb2= Qf6 (5...d6=) 6.f4 (6.Qc2 Ne7 7.Nf3 d6+/–) 6...Bc5 (better is 6...Qf4 7.Qc2 Ne7=) 7.Be5+/– Qg6 8.e3 d6? (8...Ne7 9.f5 Qf5 10.Bg7+/–) 9.Bb2 (better is 9.Qf3!? de5 10.Qa8+-) 9...Bb7 (better is 9...Nf6+=) 10.Qb3?? (better is 10.Nf3 Nf6 11.a3+/–) 10...Bg2-+ 11.Nh3 Bh1 12.d4 Bd4 13.Bd4 Nf6 14.Nc3 0-0 15.Qd1 Nbd7 16.Ng5 h6 17.Bd3–/+ Qh5 18.Qh5 Nh5 19.Nh3 Nc5 20.Bc5 dc5 21.Kd2 Bg2 22.Nf2 Rad8 23.Rg1 Bf3 24.Rg3 Bb7 25.Rg4 c4 26.e4 cd3 27.a4 f5 28.ef5 Bf3 29.Rg6 Rf5 30.Ke3 Rf4 31.Nh3 Re8 32.Kf2 Rf7 33.Rd6 Bg4 34.Kg2-+ Bh3 35.Kh3 Nf4 36.Kg4 h5 37.Kg3 Re3 38.Kh4 Rh3 39.Kg5 Kh7 40.Ne4 Rh2 41.Ng3 Rg2 (42.Rd3 Ne6 43.Kh5 Rh2 44.Kg4 Rf4) 0–1. riverborne – icewater, Caissa.com, 2004.

5.Bb2 d4 6.Nf3 Qd6 7.e3 de3 (7...Nf6 8.ed4 ed4 9.Nd4 Qe5 10.Qe2+-) 8.fe3 Bg4 9.Qc2 (9.h3 Bh5 10.Be5 Qe5 11.Ne5 Bd1 12.Kd1 Nd7 13.Nd7 Kd7+-) 9...Bf3 10.Qc8 (10.gf3 Nd7+-) 10...Qd8 11.Qd8 Kd8 12.gf3 Nd7 13.d4 (13.Na3 Ba3 14.Ba3 Rc8+-) 13...f6 (13...ed4 14.Bd4 Ngf6 15.Bc4+=) 14.Bd3 (14.Nd2 ed4 15.Bd4 Bc5+-) 14...Be7 (14...Rc8!?+=) 15.Rg1 1–0. GuestRQYK – GuestHCTD, freechess.org, 2020.

5.Bb2 Bd6 6.e3 Nf6 7.Nf3 e4 8.Nd4 0-0 9.Be2 Qc7 (9...Be5 10.d3=+) 10.h3 (10.Nc3 Be5= (worse 10...Bh2 11.b6 Qe5 12.ba7+=)) 10...Re8 (10...Nbd7 11.0-0=+) 11.Nc3= Bc5 (11...Be5 12.Nb3=+) 12.Na4 Bd6 (12...Bb4 13.Rc1 Qa5 14.Bc3=) 13.Rc1 Qd8 14.0-0 b6 (14...Qe7 15.f3=) 15.Nc3 (15.d3 Re7+=) 15...a6= 16.a4 (16.d3 ab5 17.Ncb5 Be5+=) 16...Bc5 (16...Be5 17.d3=) 17.Nb3 Ra7 (17...d4 18.ed4 Bd4 19.Nd4 Qd4 20.d3 ab5 21.de4+-) 18.Nc5+= bc5 19.d3 ed3 20.Bd3 (20.Qd3 d4 21.Nd1 Rd7+=) 20...Rae7 (20...Qb6 21.Nd5 Nd5 22.Qh5+=) 21.ba6 (21.Na2 Rc7+-) 21...Na6+= 22.Bb5 Rf8 23.Ne2 Ne4 24.Nf4 Nb4. Sie – Cpu, AI Factory's Chess, 2016.

5.Bb2 Bd6 6.Nf3 Nd7 7.Qb3 (7.e3 Ngf6=+) 7...Ngf6 8.g4 (8.d4!? e4 9.Nfd2=+) 8...Nc5 9.Qc3 (9.Qc2!? e4 10.g5–/+) 9...Ng4 10.Bh3? (better is 10.Qc2 e4 11.h3 Nf2 12.Kf2 ef3 13.ef3 Qh4 14.Ke2-+) 10...Nf2! 11.Kf2 Ne4 12.Ke1 Nc3 13.Bc8 Nb1 14.Bf5 e4 15.Nd4 Nd2 16.Kd2 Be5 17.Ke3 Bd4 18.Bd4 Qg5 (19.Kf2 Qf5 20.Ke1 e3 21.Be3 Qe5-+) 0–1. riverborne – jooobl, Live Game Caissa's Web, 2005.

5.Bb2 Bd6 6.g3 Be6 7.f4 Nd7 8.Nf3 +=.

5.Bb2 Bd6 6.g3 Ne7 7.Nf3 e4 8.Nd4 0-0 9.Bg2 Qb6 10.a4 (10.d3 Bb4 11.Nd2 ed3+=) 10...Nbc6 (10...Be5 11.Nf5 Bf5 12.Be5+=) 11.Nb3 Ne5 12.Bd4 Qd8 13.Nc3 Bg4 (13...Nf5 14.Be5 Be5 15.d4+=) 14.0-0= f5 (14...Nf5 15.h3 (worse is 15.Nd5 Nd4 16.Nd4 Bc5–/+) 15...Bh5 16.Bc5=) 15.Nc5 (15.f4 N5g6 16.h3=) 15...f4 (better is 15...Bc5!? 16.Bc5 d4 17.Qb3 Rf7=) 16.Nb7+/– Qc7 17.Nd6 Qd6 18.Qb3 f3 (18...Be6+=) 19.Be5 (better is 19.Ne4!? Qh6 20.Be3 fg2 21.Bh6 gf1R 22.Kf1 gh6 23.Rc1+-) 19...Qe5= 20.ef3 Bf3 21.Rae1 Bg2 (21...Kh8 22.Re3=) 22.Kg2 Kh8 23.d4 (23.Qb4 Qf6=) 23...Qh5 (23...Qf6 24.Kg1=) 24.Re3 (24.Kg1 Rac8+=) 24...Nf5 25.Nd5 (25.Qd5 Rad8 26.Qa2 Ne3 27.fe3 Rf1 28.Kf1 Qf3 29.Qf2 Qh1 30.Ke2 Rc8–/+) 25...Ne3 26.Ne3 Rae8 27.a5 Rb8 28.d5 Rb7 29.Qc4 Qe5 30.Qb4 Rfb8 31.Rb1 Qe8 32.b6 ab6 33.ab6 Qd8 34.Qe4+/– Rb6 35.Rb6 Qb6 36.h4 Rf8 37.f4 Qb2 38.Kf3 Qb5 39.h5 Re8 40.Qd4 Qb7 41.h6+- Kg8 42.Nf5 g6 43.Nd6 Qb3 44.Kg4 Re7 45.Ne4 Qc2 46.Nf6 Kf7 47.d6 Qf5 48.Kf3 Qf6 49.Qf6 Kf6 50.de7 Ke7 51.Ke4 Kf6 52.Kd5 g5 53.Kd6 gf4 54.gf4 Kf5 55.Ke7 Kg6 56.Ke6 Kh6 57.f5 1–0. Needleman,Gaston (2410) – Tristan,Leonardo (2285), South America–ch U20, 2006.

5.Bb2 Nd7 6.e3 Ngf6 7.Nf3 Bd6 8.Qc2 b6?? (8...0-0 9.Nc3=+) 9.Nc3 (better is 9.Qc6 Bb7 10.Qd6+- (10.Qb7?! Nc5 11.Qc6 Kf8+-)) 9...Bb7 10.Be2 0-0 11.Ng5 (11.d4 e4 12.Nh4 g6=) 11...Qe7 12.0-0 Rac8 13.Qf5 Nc5 14.f4 e4?? (better is 14...d4 15.fe5 A) 15...dc3?? 16.ef6 (16.ed6?! Qd6 17.Bc3 Qd5 18.Qd5 Nd5+/–) 16...Be4 17.fe7 Bf5 18.ef8R (18.ef8N?! cb2 19.Rad1 b1Q 20.Rb1 Bb1+-) 18...Rf8 19.Bc3+-; B) 15...Qe5?! 16.Qe5 Be5 17.ed4 Bd4 18.Kh1=; C) 15...Be5=) 15.Nd5!!+- (15...Bd5 16.Bf6+-) 1–0. Otte,Marco – van der Eijk,Martin, Wag.Ext.4vsRothmans3, 1999.

5.d4 Bd6 =+.

5.e3 Bf5 6.Bb2 Nd7 7.Nf3 Bd6 8.Be2 Ne7 9.0-0 Rc8 10.Nc3 0-0 11.Rc1 e4 12.Nd4 Nf6 13.Nf5 Nf5 14.Bg4 Qd7 15.f4 (15.Bh3!? d4 16.ed4+=) 15...Rfe8 16.Bf5 Qf5 17.Qa4 Bc5 18.Ba3 Bb6 19.Ne2 Qd7 20.Bb2 Qg4 21.Qd1 Rc1 22.Nc1 Qh4 23.Ne2 Rc8 24.Bd4 Nd7 25.Qa1 Rc2 26.Bc3 (26.Bg7 Rd2 27.Ng3 Be3 28.Kh1 Bf4 29.Rf4 Qf4-+) 26...Be3 27.de3 Re2 28.Bd4 Qg4 29.Rf2 Rf2 30.Kf2 b6 31.a4 (31.h3 Qh4 32.Kg1 h6+=) 31...Nc5–/+ 32.Bc5 bc5 33.Qe5 Qh4 34.Ke2 Qd8 35.a5 g6 36.b6 (36.g4!? h6 37.a6–/+) 36...ab6-+ 37.ab6 Qb6 38.Qd5 Qb2 39.Qd2 Qb5 40.Kf2 Qd3 41.Ke1 c4 0–1. Fournier,Frederic – Mephisto Mondial, Match Active, 1999.

5.e3 Nf6 6.Bb2 Bd6 7.Nf3 Bg4 8.Be2 Nbd7 9.d4 e4 10.Ne5 Be2 11.Qe2 0-0 12.0-0 Re8 (12...Rc8 13.Nd7 Qd7 14.Ba3=+) 13.Nd7 Qd7 14.Rc1 (14.Ba3 Bc7=+) 14...Rec8 15.Nd2 (15.Nc3 Qe6=+) 15...Bb4 (15...Rc1 16.Rc1 a6 17.a4–/+) 16.a4 h5 (16...Rc1 17.Rc1 Rc8 18.Rc8 Qc8 19.Qd1=+) 17.h3 Rc1 18.Rc1 Rc8 19.Qd1 g6 (19...Rc1 20.Bc1 Bd6 21.Qb3=) 20.Kh2 (20.Rc8 Qc8 21.Nb1 Qc4=) 20...Nh7 (20...Rc1 21.Bc1 a6 22.ba6 ba6 23.Kg1=+) 21.Rc8= Qc8 22.Qc1 (22.Kg1 a6=) 22...Qc1=+ 23.Bc1 Nf8 24.f3 f5 25.Kg3 Bd6 26.Kh4 (26.Kf2 h4=+) 26…Be7 ½–½. Istvanny (1675) – ozana (1725), internet, 2007.

5.e3 Nf6 6.Bb2 Bd6 7.g3 0-0 8.Bg2 Be6 9.Nc3 Nbd7 10.Nge2 Rc8 11.0-0 a6 (11...Qb6 12.f4 d4 13.ed4 ef4 14.Nf4=) 12.ba6 ba6 13.a3 (13.f4!? Nb6 14.fe5 Be5 15.Na4 Bb2 16.Nb2=+) 13...Rb8 14.Qc2 Qe7 (14...Qb6 15.Rfb1–/+) 15.d4 (better is 15.f4!? ef4 16.gf4=+) 15...e4–/+ 16.f4 (better is 16.Nf4–/+) 16...Rfc8?? (better is 16...Nb6–/+) 17.f5+/– Nb6 18.fe6 fe6 19.Qd2?? (better is 19.Bc1+/–) 19...Nc4-+ 20.Qc2 (20.Qc1 Rb2 21.Bh3 Rb3-+) 20...Rb2 (20...Nb2?! 21.Rfb1 Nc4 22.Rb8 Bb8 23.Qa4-+) 21.Qa4 Ng4 (better is 21...Ne3 22.Rfb1 Rc2-+) 22.Nd1 (22.Rab1 Rb1 23.Rb1 Nge3 24.Qa6-+) 22...Re2 23.Rc1 (23.Qa6 Qe8-+) 23...Nge3 24.Ne3 Re3 25.Bh3 (25.Qa6 Qd7 26.a4 Rb3-+) 25...Ra3 26.Qd1 Rb8 (better is 26...Rd3!? 27.Qg4 Re8 28.Rc4 dc4 29.Bg2-+) 27.Qg4 Re8 28.Rf2 (28.Rc4 dc4 29.Qe4 Rd3-+) 28...Ne3 (28...e5 29.Rc4 dc4 30.Qe4 ed4 31.Qd5 Kh8 32.Qc4-+) 29.Qe2 (29.Qe6 Kh8-+) 29...Nf5 (better is 29...e5 30.de5 Be5 31.Bc8-+) 30.Bf5 ef5 31.Rf5 Bg3 32.hg3 (32.Rcf1-+) 32...Rg3 33.Kf2 Qh4 34.Rh5 (34.Qh5 Rf3 35.Kg1 Qf2 36.Kh1-+) 34...Rf8 35.Ke1 Rg1 36.Kd2 Qf4 37.Qe3 Rg2 38.Kc3 Qe3 39.Kb4 Rb2 40.Kc5 Rb5 41.Kd6 Qa3 42.Ke5 Qe7 0–1. MasterofDisaster – 555666, Live Game Caissa's Web, 2004.

5.Nf3 Bd6 6.d4 –/+.

4.Ba3 Bf2 5.Kf2 Qh4 6.g3 Qd4 7.e3 Qa1 8.Qg4 -+.

4.e3 d5=.

4.e3 Qe7 5.Bb2 Nf6 6.Nf3 d6 7.Be2 Bg4 (7...0-0 8.Nc3=) 8.0-0 e4 (8...0-0 9.d4 ed4 10.ed4+=) 9.Nd4+= Be2 10.Ne2 (10.Qe2 Bd4 11.Bd4 Nbd7+=) 10...0-0 (10...Nbd7 11.Bf6 Nf6 12.Nbc3=) 11.Nbc3 (better 11.Bf6!? Qf6 12.Nbc3+=) 11...Nbd7= 12.Ng3 (12.Qc2 Rab8=) 12...a6 (better 12...Qe6=+) 13.Nce4? (better 13.bc6 bc6 14.f3=) 13...Ne4-+ 14.Bg7 Ng3?? (better 14...Rfe8 15.d4 Ng3–/+) 15.Bf8= Nf8 16.hg3 ab5 17.cb5 cb5 18.Qg4 Kh8 (18...Ng6 19.Rab1=) 19.Rfb1+= b4 (19...Ra5 20.a4+=) 20.d4+- Ba7 (20...Bb6 21.Rb4 Bd8 22.Rb5+-) 21.Rb4+- Ne6 22.Qf3 Nd8 (22...Rb8 23.Rc1+-) 23.Rab1 Rb8 24.d5 Bc5 25.Rh4 Qe5 (25...Qg5 26.Rg4 Qe5 27.a4+-) 26.a4 Ra8 (26...Ba3 27.Rc4+-) 27.Re4 Qg5 28.Rg4 Qe7 (28...Qe5 29.Rc1 f5 30.Rf4+-) 29.Qf5 (29.Rc1 f6 30.Re4 Qf8+-) 29...f6 (better 29...Qe5 30.Qd3 b6+-) 30.Re4 Qf7 31.Kh2 (31.Rh4 Qe7+-) 31...b6 32.Rf4 (32.Rh1 Qg6 33.Qg6 hg6 34.Re8 Kg7+-) 32...Kg7 (better 32...Qg6 33.Qf6 Qf6 34.Rf6 Kg7+-) 33.Rg4 Kf8 34.Rh1 Ra7 35.Kg1 Re7 36.Rgh4 Kg8 (36...Re5 37.Qc8 h5+-) 37.Rh7 Qh7 38.Rh7 Rh7 39.Qg6 Rg7 40.Qe8 (40.Qe8 Kh7 41.Qd8+-) 1–0. GuestVZPY – GuestPFCW, freechess.org, 2020.

4.Nf3 a6 5.e3 (5.Nc3=) 5...d5 (5...e4 6.d4 Bb4 7.Nfd2 ab5 8.cb5=+) 6.cd5 (6.Ne5 Bd6 7.Bb2 Nf6+=) 6...cd5 (better is 6...Qd5 7.Nc3 Qd6+=) 7.Bd3?? (better is 7.Ne5 Nd7 8.Bb2+/–) 7...e4-+ 8.0-0 (8.ba6 ed3 9.ab7 Bb7 10.0-0-+) 8...ab5?? (better is 8...ed3 9.Bb2 Nf6-+ (9...ab5? 10.Bg7 Bg4 11.Bh8+-)) 9.Bb5=+ Bd7 10.Be2? (better is 10.Bd7 Nd7 11.Ne1–/+) 10...ef3 (better is 10...Ba4 11.Qe1 ef3 12.Bf3 Nf6-+) 11.gf3?? Qg5 12.Kh1 Ra6?? 13.Rg1 Qh4 14.f4?? Rh6-+ 15.Bd3 Qh2 0–1. soraya – meredin (1720), net–chess.com, 2007.

4.Nf3 e4 5.Bb2 ef3 6.Bg7 fg2 7.Bg2 -+.

4.bc6 Nc6 5.cd5 Qd5 +=.

4.cd5 cb5 5.e4 f5 (5...Qa5!?=) 6.d4 (6...ed4 7.Qd4 fe4 8.Qe4 Kf7 9.Nc3=). Pierred (2105) – Guest652763, Rated game, 1m + 0s, 2005.

4.e3 Bc5 5.cd5 cd5 6.Bb2 d4 7.Qc2 b6?? (better 7...Qe7 8.Be2 Nd7+=) 8.Qe4+- Nd7 9.Qa8 Ngf6 (9...Qc7 10.Nf3 Ngf6 11.Bd3+- (11.ed4?! ed4 12.Nd4 0-0+-)) 10.Qa7 0-0 11.Nf3 Nd5 12.Bc4 N7f6 (12...Nb4 13.0-0 Nc2 14.ed4 ed4 15.Na3 Na1 16.Ra1+-) 13.Ne5 Be6 14.Nc6 Qd6 15.ed4 Qf4 (15...Bb4 16.Ba3 Bd7 17.Ne5+-) 16.dc5 (better 16.Bd5 Bd5 17.dc5 Bg2 18.Ne7 Kh8+-) 16...Ng4 (16...Qc4 17.Nc3 Re8+-) 17.Bd5 Qf2 18.Kd1 Bd5 19.Ne7 Kh8 20.Nd5 Qg2 21.Nbc3 Nf2 22.Kc2 Nh1 23.cb6 Nf2 24.b7 Qh2 25.Rf1 Ng4 26.Rf7! Rf7 (26...Rf7 27.b8Q Mate attack) 27.Qa8 Rf8 (27...Qb8 28.Qb8 Rf8 29.Qf8) 28.Qf8 1–0. Silent Move (2115) – Erwin Weinzinger, redhotpawn.com (1), 2016.

4.e3 Be6 5.Bb2 (5.cd5 Qd5 6.Nc3 Qc5=) 5...Nd7 (5...dc4!? 6.Qa4 Qd7 7.Bc4 Bc4 8.Qc4 cb5=+) 6.cd5 (6.Nf3 Bd6=+) 6...cd5 7.Nf3 (7.d4 e4=+) 7...Bd6 8.Nc3 f6 (8...Ngf6 9.Rc1=+) 9.a4 Ne7 10.Be2 0-0 11.0-0 b6 (11...Nf5 12.d4=+) 12.Rc1 Rc8 (12...Nf5 13.d4 e4 14.Nd2=) 13.h3 (13.d4 e4 14.Nd2 Qe8=) 13...Rc7 (13...Qe8 14.d4=+) 14.Bd3 (14.d4 e4 15.Nd2 f5=) 14...Qb8 15.Bb1 (15.Be2 Rfc8=+) 15...Bf7 (15...Rfc8 16.e4=+) 16.Nh4 (16.d4 e4 17.Nd2 Rfc8=) 16...g6 (16...Rfc8 17.Nf5 Nf5 18.Bf5=) 17.f3 (17.Qg4 Nc5=) 17...Be6 (17...Rfc8 18.d4=+) 18.g4 (18.f4 d4 19.Ne4 Rc1 20.Qc1 Rc8=) 18...Rf7 (18...Rfc8 19.f4–/+) 19.Ne2 (19.f4 ef4 20.ef4 f5 21.gf5 Nf5 22.Nf5 Bf5=) 19...f5 (19...Rc1 20.Nc1 Qc7 21.f4 ef4 22.e4–/+) 20.Rc7 (20.gf5 Rc1 21.Qc1 Nf5 22.Nf5 Bf5 23.Bf5 Rf5+=) 20...Qc7 21.Qc2 (21.gf5 Nf5 22.Nf5 Bf5 23.Bf5 Rf5=) 21...Qc2 22.Bc2 Rf8 23.Ra1 Rc8 24.Bc3 Kf7 25.Ng2 h6 26.a5 ba5 27.Ra5 Bc5 28.Bb3 Bb6–/+ 29.Ra1 Rc7 30.Ba5 Rc5 31.Bb6 ab6 32.Ba4 Nc8 33.Ne1 Nd6 34.Nd3 Rc7 35.Nb4 Nb8 36.Nc3 Ra7 37.Nbd5+= Bd5 38.Nd5+/– Nd7? 39.d4?? ed4 40.ed4 Ra5?? 41.Nb6!+- Ke7 42.Nd5 Kd8 43.b6?? Rd5=+ 44.Bc6 Rd4 45.b7?? Nb7?? 46.Bb7= fg4 ½–½. Louis,K – Kupsch,Wolfgang, Saarland–chC, 1993.

4.e3 Bf5 5.Bb2 Bd6 6.Nf3 f6 7.Be2 Ne7 8.0-0 0-0 9.d3 Nd7 10.Nc3 a6 11.a4 Qc7 12.h3 Rfd8 13.Rc1 (13.d4 e4 14.Nh4 Be6+=) 13...Qa5 (13...dc4!? 14.e4 cd3 15.Bd3 Be6–/+) 14.e4= Be6 15.ed5 cd5 16.Nd2 (16.cd5 Nd5 17.d4 Nf4=+) 16...d4 (16...ab5 17.Nb3 Qb4 18.Nb5 dc4 19.Ba3 Qb3 20.Bd6 Qd1 21.Rfd1=+) 17.Nce4= Nc5 (better is 17...Bb4!?=) 18.Nd6+/– Rd6 19.Ba3 Qc7 (19...b6 20.Bc5 bc5 21.Ne4+/–) 20.Bc5 Qc5 21.Ne4 Qc7 22.Nd6 Qd6 23.Bf3 Rb8 24.Qb3 Ng6 25.Rb1 a5 26.b6 Nf4 27.Rfd1 g5 (better is 27...Qd7!?+/–) 28.Qb5+- Bd7 29.Qa5 Bc6 30.Rd2?? (better is 30.c5 Qd7 31.Be4+/–) 30...Bf3-+ 31.gf3 Qc6 (31...Nh3 32.Kf1=) ½–½. Sternik,Ryszard – Kaminski,B, Augustow, 1972.

4.e3 Nf6 5.d4 Bb4 6.Bd2 Bd2 7.Qd2 ed4 8.Qd4=.

5.Bb2 d4 6.Nf3 Nd7 (6...Bd6 7.e3=) 7.e3 de3 8.de3 (8.Ne5 ef2 9.Kf2 Qf6 10.Ke1 Ne5–/+; 8.fe3?! e4 9.Nd4 Ngf6=) 8...Bb4 9.Nc3 e4 (9...Ngf6 10.a3 Be7 11.Bc4+=) 10.Nd4 Ngf6 11.Bc4 (11.a3 Bc5=) 11...Ne5 12.Bf7?? (better is 12.Qb3 Qe7 13.a3 Nc4 14.Qc4=) 12...Nf7-+ 13.Qb3 Qe7 14.0-0 0-0 15.Nd5 Nd5 16.Qd5 Rd8 17.Qh5 Nh6 18.Nc2 Bd6 19.f4 ef3 20.Rf3 Bg4 21.Qd5 Kh8 22.Kh1 Bf3 23.gf3 Rac8 24.Rg1 Rg8 25.Nd4 Qe5 26.Qe5 Be5 27.f4 Bd4 28.Bd4 a6 29.ba6 ba6 30.Rb1 Rb8 31.Rc1 Nf5 32.Be5 Rbc8 33.Re1 Rc2 34.e4 Nh4 (35.Rf1 Re8-+) 0–1. Langguth,Wilhelm – Grimm,Ulrich, corr ICCF–Cup8/9 V186, 1990.

5.Bb2 Bd6 6.Nf3 Nd7 7.e3 +=.

5.Bb2 f6 6.d4 Bb4 7.Bc3 Ba5=.

5.Bb2 f6 6.e3 Be6 7.Be2 Nd7 8.Nf3 Bd6 9.0-0 Ne7 10.d4 (10.Ba3 Ba3 11.Na3 Qa5=) 10...e4+= 11.Nfd2 0-0 (11...Qc7 12.h3=) 12.Qb3 Bf7 (12...f5 13.Ba3 Qb8 14.Bd6 Qd6 15.Qa3 Qa3 16.Na3=) 13.Nc3 (13.Ba3 Nb6=) 13...f5 (13...Qb8 14.h3=) 14.a4 (14.Ba3 Nf6=) 14...Nf6 (14...f4 15.Ba3 Ba3 16.Ra3=) 15.a5 g5 Black prepares f4 (15...f4 16.Ba3=) 16.b6 (16.Ba3 f4+=) 16...a6 (16...ab6 17.ab6 Ra1 18.Ra1=) 17.Na4 (17.Ba3 f4+=) 17...Ng6 Black prepares f4 (17...Qb8 18.Kh1+=) 18.Rac1 (18.Ba3 Ba3 19.Ra3 Rc8+/–) 18...f4 (18...Qe7 19.Nc5+=) 19.Nc5 (19.Ba3 Ba3 20.Qa3 g4+/–) 19...Qb8 (19...Qe7 20.Rc2+=) 20.h3+/– Nh4 21.g3?? (better is 21.Ba3+/–) 21...fg3–/+ 22.fg3 (22.Na6 ba6 23.fg3-+) 22...Bc5-+ 23.gh4?? Qg3 24.Kh1 Bd6 (24...Bd6 25.Rf4 Qh3 (25...gf4?! 26.Rg1-+) 26.Kg1 gf4 27.ef4 e3-+) 0–1. Plock,Joerg – Koepcke,Klaus Peter, Stralsund op, 1997.

5.Bb2 f6 6.e3 Be6 7.Nf3 Nd7 8.Be2 e4 9.Nd4 Qb6 10.d3 Bc5 11.Nd2 Bd4 (11...ed3 12.Bd3 Ne5 13.Be2+=) 12.Bd4+/– Ne7?? (better is 12...Qb5 13.de4 Qa5+/–) 13.Bb6+- Nb6 14.0-0 ed3 15.Bd3 Nc4 16.Rc1 0-0 17.Nc4 dc4 18.Bc4 Rfc8 19.Be6 Kf8 20.Rc8 Rc8 21.Bc8 Nc8 22.Qd8 Kf7 23.Qd5 Kf8 24.Rd1 (24...Nd6 25.Qe6 h5 26.Rd6 g5 27.Rd7 f5 28.Qf7) 1–0. Pierred (2105) – Guest652763, Rated game, 1m + 2s, 2005.

5.Bb2 f6 6.e3 Nh6 7.d4 Bb4 8.Nd2=.

5.e3 e4 6.Nc3 Nf6 7.Nge2 Bd6 8.Nd4 0-0 9.Be2 Nbd7 10.0-0 Ne5 11.Qb3 Re8 12.Bb2 (12.Nd5? Nd5 13.Qd5 Nf3 14.Kh1 Re5 15.Qd6 Qd6 16.gf3 Rh5-+) 12...Bg4 13.Bg4 (13.Nd5? Nd5 14.Qd5 Be2 15.Ne2 Nf3 16.Kh1 Nh2-+) 13...Nfg4 14.h3 Qh4?? (better 14...Nf6=) 15.Qd5+- (15.hg4?? Ng4 16.Nf3 ef3 17.Rfc1 Qf2 18.Kh1 Qg2) 15...Nf3 (15...Rad8!? 16.Qe4 Nc4 17.Qg4 Qg4 18.hg4 Nb2+-) 16.Nf3+- ef3 17.Qd6 fg2 18.Kg2 Re5?? (18...Re6 19.Qg3 Ne3 20.de3 Rg6+-) 19.Ne2 (19.hg4?? Qg4 20.Kh1 Qh3 21.Kg1 Rg5 22.Qg3 Rg3 23.fg3 Qg3 24.Kh1 Rd8-+) 19...Qg5 (19...Rb5 20.Qd4 Qf6 21.Qf6 Nf6 22.Bf6 gf6+-) 20.hg4 Qg4 21.Ng3 Rh5 (21...Rb5 22.Bd4 h5 23.a4+-) 22.Qd4 Qh3 (22...Qd4 23.Bd4 Rb5 24.Rfb1+-) 23.Kf3 f6 (23...Rf5 24.Ke2 Rg5+-) 24.Rh1 Rf5 25.Ke2 (25.Ke2 Rf2 26.Kf2+-) 1–0. Silent Move (2115) – fortom (1645), redhotpawn.com, 2014.

5.Nf3 Bd6 =+.

4.Bb2 Nf6 5.e3 Bc7 6.d4 e4 7.d5 d6 8.Qa4 Ba5 9.Bc3 =+.

4.Nc3 Bb4 A) 5.Qb3 Qe7 6.Nf3 Bc3 7.Qc3 d6 8.Ba3 c5 9.d3=; B) 5.Rb1 Bc3 6.dc3 d6 7.e4 Nf6 8.Bd3 Qa5 9.Qc2=; C) 5.a3 Bc3 6.dc3 Qc7 7.Nf3 Nf6 8.Rb1 cb5 9.cb5=+; D) 5.Bb2 d6 6.Qb3 Ba5 7.e3 Nf6 8.Be2 a6 9.bc6=; E) 5.Nf3 d6 6.Qb3 Qa5 7.Bb2 Nf6 8.a3 Bc5 9.Na4=.

4.Nc3 Bc5 5.Nf3 d6 6.e3 Bg4 7.Be2 d5 8.Ne5 Be2 9.Qe2 f6?? 10.Nd3 Bb6 11.cd5 cd5 12.Qh5 g6 13.Qd5 Qd5 14.Nd5 Nd7 15.a4 Ne7 16.Ne7 Ke7 17.0-0 Nc5?? 18.Ba3 Kd6 (19.Rfc1 Rhc8+-). eros129in – DARKMAN, internet, 2007.

4.Nc3 Qe7 5.Qc2 Bc5 6.Rb1 Nf6 7.Na4 Ba3 8.Ba3 Qa3 9.Nf3=.

4.Nc3 Be7 A) 5.e4 Nf6 6.Nf3 Bb4 7.Rb1 Bc3 8.dc3 Ne4 9.Qc2=; B) 5.Nf3 Bf6 6.Rb1 a6 7.bc6 dc6 8.Ba3 Be7 9.Be7=.

4.Nc3 Nf6 5.Nf3 e4 6.Ng5 Be5 7.Rb1 Bc3 8.dc3 h6 9.Nh3 =+.

4.e4 Bc5 5.Nf3 Nf6 6.Nc3 Ng4 7.d4 ed4 8.Na4 Bb4 9.Bd2 =+.

4.Bb2 Bc5 5.e3 0-0 6.Be5+= Re8 7.Nf3 d5 8.Be2 Bg4 9.d4 Bb4 10.Nfd2 Be2 11.Qe2 (worse 11.Ke2 dc4 12.Nc4 cb5-/+) 11...Nbd7 12.bc6 Ne5 13.cb7 (13.de5?! bc6 14.f4 dc4=) 13...Rb8 14.de5 Re5 15.0-0 Rb7 16.Nf3 Re8 17.Rd1 Qa5 18.a3 h6? (better 18...Be7+/-) 19.Qb2+- (19.ab4 Qa1 20.b5 dc4 21.Qc4 a6-/+) 19...Qa4 20.Rc1 Reb8 (20...dc4 21.ab4 Qb4 22.Qb4 Rb4 23.Ra7+-) 21.ab4 Rb4 22.Qc3 (better 22.Qe5 Qc6 23.Nbd2+-) 22...Ne4 (22...Qd7 23.Nbd2 dc4 24.Nc4 Ne4+-) 23.Ra4 Rb1 (23...Nc3 24.Nc3 Ra4 25.Na4 dc4+-) 24.Qe1 R1b2 (24...Rc1 25.Qc1 dc4 26.Qc2+-) 25.cd5 Nf2 26.Qc3 Re2 27.Nd4 Ne4 28.Qc7 Rg2 29.Kg2 Rb2 30.Rc2 (30.Rc2 Rb6 31.Ne6+-) 1-0. onur604 (2320) - Naminator (2335), Casual Rapid game, 2021.

4.Bb2 d6 5.e3 c5 (5...Be7 6.d4 e4 7.Nc3=+) 6.Qc2 Be6 7.Nc3 Be7 8.Nf3 0-0 9.Be2 Nbd7 10.0-0 Nb6 11.d3 Qc7 12.Ng5 Bd7 13.a4 a5 14.ba6 Ra6 15.Nb5 (15.a5 Na8 16.d4 g6+/–) 15...Qc8 (15...Qd8 16.d4 h6 17.de5 de5 18.Ne4 Ne4 19.Qe4=) 16.d4 (16.f4 Ng4 17.Bg4 Bg4+=) 16...cd4= 17.ed4 d5 (better is 17...h6!? 18.Nf3 ed4 19.Nfd4 d5=) 18.de5+/– Ne4 19.Ne4 de4 20.Qe4 Bf5 21.Qf4 Na4 22.Bd4 Rd8 23.c5 Nc5 24.Rac1 (24.Na7 Qe6 25.Ba6 Na6+-) 24...Ra4 25.Qe3 (25.Nd6!? Bd6 26.ed6+/–) 25...b6+= 26.Rfe1 Qb7 (26...Qc6!?=) 27.Nd6+/– Qd7?? (better is 27...Bd6 28.ed6 Ne6+/–) 28.Bc5 Bd6 (28...bc5 29.Bb5 (29.Rc5?! Bd6 30.ed6 Re4+/–; 29.Qc5?! Raa8+/–) 29...Qa7 30.Nf5+-) 29.Bd6 (29.ed6?! Re4 30.Qg5 bc5+/–) 29...b5 30.Rc7 Qe6 31.f3 (better is 31.Rec1 Ra5 32.Re7+-) 31...b4 (31...Rd6 32.Bb5 Rdd4+-) 32.Bc4 Qg6 (32...Rda8 33.Be6 Be6 34.Rb1+-) 33.Bf7 (33...Qf7 34.Rf7 Kf7 35.Qb3 Be6 36.Qa4+-) 1–0. Otte,Marco – Bakker,Henk, Wag.Intcomp Wageningen, 2002.

4.Bb2 d6 5.f3 a6 (5...Qb6 6.a4=+) 6.Qa4 (6.e4 ab5 7.cb5 d5–/+) 6...Bd7 (6...Nfd7–/+) 7.h4? (better is 7.e3=+) 7...cb5 8.Nc3?? (better is 8.cb5 Bb5 9.Qb3-+) 8...ba4 9.e4 Nc6 10.Rc1 Nd4 11.Nd5 Nd5 12.cd5 Qb6 13.Bd4 Qd4 14.Ne2 Qb6 15.Nc3 Rc8 16.Rb1 Qa7 17.Bd3 Be7 18.g4 h5 19.g5 f6 20.gf6 Bf6 21.Kf1 g5 22.hg5 Bg5 23.Ke2 Rc3! 24.dc3 Qe3 25.Kf1 Qd3 26.Kg2 b5 27.Rhg1 Qe2 (28.Kh1 Qf3 29.Rg2 Bh3 30.Rbg1 Bg2 31.Rg2 Qf1 32.Kh2 Bf4 33.Rg3 h4 34.a3 hg3) 0–1. riverborne – Albatross3, Live Game Caissa's Web, 2005.

4.Bb2 e4 5.Nc3 d5 6.e3 Bd6 7.bc6 bc6 8.cd5 cd5 9.Nd5 Nd5 10.Bg7 Rg8 11.Qa4 Qd7 12.Bb5 Bb7?? (better 12...Nb4 13.Rb1 N8c6 14.Rb4 Nb4+=) 13.Bd7+- Nd7 14.Qe4 Kd8 15.Qh7 (better 15.Rb1 Rg7 16.Rb7 N7f6+-) 15...Kc7 (15...N5f6 16.Bf6 Nf6+-) 16.Rc1 Kb6 (16...Bc6 17.Nf3 Ba3 18.Rc2+-) 17.Bd4 Bc5 (17...Ka5 18.Qf5 N7b6 19.Bc3 Ka4 20.Qe4 Kb5 21.Qd3 Kc6 22.Bb4 Kd7 23.Qf5 Ke8 24.Bd6+-) 18.Bc5 Nc5 19.Qb1 Kc6 (19...Kc7 20.Rc5 Kd6 21.Ra5+-) 20.d4 (20.d4 Kd6 21.dc5 Kc7 22.Qf5+-) 1-0. onur604 (2320) - sergejmilosevic (2360), Casual Rapid game, 2021.

4.Bb2 e4 5.Nc3 d6 6.e3 Nbd7 7.f3 d5 8.cd5 cd5 9.d4 Bd6 10.Qc2 Qe7 11.fe4 Ne4 12.Ne4 de4 13.g3 Nf6 14.Ne2 Bd7 15.Nc3 Rc8 16.Rc1 Bb4 17.Qb3 Be6 18.Qa4 Nd5 19.b6 Bd7 20.Bb5 Nc3?? (better is 20...Rc3 21.Bc3 Nc3 22.Bd7 Kd8–/+) 21.Bd7+= Kd8 22.Bc3 Bc3 23.Rc3 Rc3 (23...Rc3 24.Qa5 Double attack (24.Qa5 Decoy; 24.ba7 Passed pawn)) 24.ba7 Kc7 25.Qa5 Kd7 26.Qc3 Ra8 27.Qa5 f6 28.Kd2 Ke8 29.Rc1 Qd7 30.Qb6 Qd5 31.Rc2 Kf8 32.Rb2 Kg8 33.Qb7 Qa5 34.Kd1 Qa7 35.Qe4 Qa6 36.Qd5 Kh8 37.Qb5 Qa7 38.Kd2 Rc8 39.a4 Qa8 40.d5 Rd8 41.e4 f5 42.Kd3 fe4 43.Ke4 Qc8 44.Re2 ½–½. Fournier,Frederic – COMP Rex Chess 2 3, 1997.

4.e3 Bb4 5.Bb2 d6 6.a4 0-0 7.Bc3 Bc5 8.Be2 Ne4 9.f3?? Qh4-+ 10.g3 Ng3! 11.hg3 Qh1 12.Kf2 Qh2 13.Kf1 Qg3 14.Qe1 Bh3 15.Nh3 Qh3 16.Kg1 Qh6 17.Qf2 Nd7 18.d4 ed4 19.Bd4 Bb6 20.Nd2 Bd4 21.Ra3 Bc5 22.Rb3 Qg5 23.Kf1 Rae8 24.Ne4 Qe5 25.bc6 bc6 26.Bd3 Qa1 27.Rb1 Qa4 28.Qh4 h6 29.Be2 Qc2 30.Re1 d5 31.cd5 cd5 32.Bb5 de4 33.Bd7 Qd3 34.Kf2 Qd7 35.fe4 Qd2 36.Kf1 Qd3 37.Re2 Re4 38.Qe1 Re3 39.Qd2 Qb1 40.Qe1-+ Qf5 41.Kg2 Qf3 42.Kh2 Re2 43.Qe2 Qe2 44.Kg3 Re8 45.Kf4 Qf2 46.Kg4 Re4 47.Kh3 Rh4 0–1. Sierra,Sergio – Logan,Hardie, O–1703 IECC, 2003.

4.e3 cb5 5.cb5 d5 6.d4 =+.

4.e3 cb5 5.cb5 d5 6.Be2 =+.

4.Bb2 d5 5.e3 Qb6 6.Qc1 +=.

4.Bb2 d5 5.e3 e4 6.Bb5 a6 7.Ba4 Nf6 8.Ne2 Bd7 (8...Be7 9.0-0+=) 9.0-0 Bd6 10.a3? (10.f4 0-0+=) 10...0-0 (10...Bh2 11.Kh1 Bd6 12.f4-+) 11.d3? (11.Bb3 b5+=) 11...ed3 (11...Bh2 12.Kh1 Ng4-+) 12.cd3+= b5 13.Bb3 Na5 14.Ba2 b4 15.h3 Rb8 16.Qc2?? Rc8?? 17.Qd2? ba3?? 18.Na3 +=. Maly,Guenther (1665) – Feiertag,Manfred, RSS7E schnell–67, 2010.

4.Bb2 d5 5.g3 Nf6 6.a3 a5 7.Nc3 Bc5 8.e3 e4 9.Nb5 0-0 10.Bf6 Qf6 (10...gf6?! 11.d4 Be7 12.f3+=) 11.Nc7 Nb8?? (better is 11...Bg4! 12.Be2 Be2 13.Ne2 Rad8–/+) 12.Na8+- Nc6? (12...Qc6 13.d4 Bd6 14.Rb1 Ba3 15.Qd2+-) 13.c3 (better is 13.Nc7 d4+-) 13...b5? (13...Qd8 14.d3 Be6 15.de4 Qf6+-) 14.Nc7 (worse is 14.Bb5 Ne5 15.Qb3 Bd7+-) 14...d4 15.Nd5 (15.Bb5!? dc3 16.d4 ed3 17.Bd3 Qe5+-) 15...Qf5 16.Nf4 de3 17.fe3 b4 18.Bh3 Qe5 19.Bc8 Rc8 20.c4 (20.ab4!? ab4 21.Rc1 Rd8+-) 20...Rd8 21.Nd5 (21.Qc1 b3 22.Rb1 a4+-) 21...f6? (21...ba3 22.Nh3 Nb4+-) 22.Nh3 Nd4 (22...b3 23.Nf2+-) 23.Nhf4 (better is 23.ed4 Qd4 24.Qc1 Rc8+-) 23...Nf3? (23...Nc2 24.Kf2 Na1 25.ab4 ab4 26.Qa1+-) 24.Kf1 (better is 24.Ke2!? Ng5+-) 24...Nd2 25.Kg2 (25.Qd2?! Qa1 26.Kg2 Qe5+-) 25...Be3 (25...Nc4 26.Qc1 Qb2 27.Kh3+-) 26.ab4 (26.Ne3 Qb2 27.Qe2 ba3+-) 26...ab4 (26...Nc4 27.Qb3 Bf4 28.Nf4 Rd2 29.Kh3 Qf5 30.g4 Qf4 31.Qc4 Kf8 32.Qc5 Kg8+-) 27.Nf6 (better is 27.Ne3 b3 28.Qg4+-) 27...gf6 (better is 27...Qf6!? 28.Nd5 Qf2 29.Kh3 b3+=) 28.Qg4+= Kh8 (better is 28...Qg5!? 29.Qe6 Kh8=) 29.Ne6+- Rg8 30.Ra8! Qe6 (30...Ra8 31.Qg7#) 31.Qg7 Kg7-+ (31...Kg7 32.Raa1 Nf3-+) 0–1. Bernard – Delasheras, playchess.de, 2001.

4.c3 d5 5.e3 Nf6 6.Bb5 (6.Nf3 Bd6-/+) 6...Bd7 (6...Bd6 7.Nf3-+) 7.Ne2 Bd6 (7...a6 8.Bc6 bc6 9.Ba3 Ba3 10.Na3-/+) 8.0-0 (8.Ba3 Ba3 9.Na3 0-0-/+) 8...0-0 (8...Qe7 9.Qb3-/+) 9.d4 (9.Ba3 Qe7 10.Bd6 Qd6-/+) 9...e4 (9...Nd4 10.Nd4 ed4 11.Bd7 Qd7 12.cd4-/+) 10.Nd2 (10.Ba3 Bf5=+) 10...Bg4 (10...a6!? 11.Bc6 bc6-+) 11.h3-/+ Bh5 12.g4?? (12.c4 a6 13.Ba4 b5 14.cb5 ab5 15.Bb5 Qc7=+) 12...Bg6 (better 12...Bg4 13.Kg2 Bh5-+) 13.f4 (13.Nf4!?-/+) 13...ef3!-+ 14.Nf3 (14.Nf3 h5 Combination; 14.Rf3 Qb6 Combination) 14...Ne4 15.Bc6 (15.Nf4!? Nc3 16.Qb3 Nb5 17.Ng6 hg6 18.Qb5-+) 15...bc6-+ 16.Ne5? (better 16.Qa4-+) 16...Be5 (16...Qh4 17.Qe1 Qh3 18.Nf4-+) 17.de5 Qh4 18.Kh2 (18.Kg2-+) 18...Nf2 19.Qe1 (19.Nf4 Nd1 20.Rd1-+) 19...Ng4 (19...Qh3 20.Kg1 Be4 21.Nf4 Qg3 22.Ng2 Qg2) 20.Kg1-+ Qh3 21.Qg3 Qg3 22.Ng3 Ne5 23.Nf5 Bf5 24.Rf5 f6 25.Ba3 Rfe8 26.Bd6 (26.Rf2 Ng4 27.Re2 Re3 (27...Ne3?! 28.Rae1-+) 28.Re3 Ne3-+) 26...Nc4 27.Bc5 Ne3 (27...Nd2 28.Kg2-+) 28.Rf3 (28.Rf2 Nc4-+) 28...Nc4 29.Kf2 (29.Rf2 a5-+) 29...a5 (29...Nd2 30.Kg2 Nf3 31.Kf3-+) 30.Rg1 (30.Rf5 Rab8 31.Kg1 a4-+) 30...Kf7 (better 30...Nd2 31.Bb6 Rab8 32.Ba5-+) 31.Rfg3 (31.Rh3 h6 32.Rh2 Rab8-+) 31...g5 (better 31...g6 32.R3g2 Rab8-+) 32.Rf3 (32.Rh3-+) 32...Nd2 33.Kg3 (33.Re3 Ne4 34.Re4 Re4-+) 33…Nf3 (33...Nf3 34.Kf3 h5-+) 0-1. Bushwacker (1880) - Harristottle (2125), ChessWorld.net, 2015.

4.Nc3 d5–/+ 5.e3 Nf6 6.d4 (6.Bb2 Bd6=+) 6...Bb4–/+ 7.Bd2 (7.Nge2 ed4 8.ed4 Qe7–/+) 7...ed4 8.ed4 0-0 (8...Qe7 9.Qe2 Nd4 10.Qe7 Ke7 11.Bd3–/+) 9.Rb1 (9.Nce2 Bd2 10.Qd2 Ne4-+) 9...Qa5 (better is 9...Re8 10.Nge2 Bf5-+) 10.Rb2?? (better is 10.Rb3 Nd4 11.a3 Re8 12.Nge2–/+) 10...Bc3-+ 11.Bc3 Qc3 12.Qd2 Qb2 13.f4 Qb1 14.Kf2 Ne4 15.Ke2 Nd2 16.Kd2 Qf1 17.g3 Qg2 18.Ne2-+ Qh1 19.h4 Re8 (20.g4 Nd4 21.Kc3 Qa1 22.Kd3 Ne2 23.Kd2 Qd4 24.Ke1 Ng3) 0–1. Jolilein – michele@, mySchach.de, 2005.

4.e4 Nf6 5.Nc3 d5 6.ed5 Nd5 7.Nd5 Qd5 =+.

4.Bb2 ab5 5.Be5 d5 =+.

4.Bb2= b6 5.Be5 ab5 6.Qf3 d6 7.Bf4 Nf6 8.c4 Na6 9.cb5= Nb4 10.bc6?? Nc2 11.Kd1 Na1?? 12.Bb5?? Ba6 13.c7+- Qd7?? 14.Bd7 Kd7 15.Qa8 Kc7 16.Qa6 Nd5 17.Qa7 Kc6 18.Qf7 Nf4 19.Qf4 Be7 20.Ne2 g5 21.Qc4 Kb7 22.Nd4 Rc8 23.Qd5 Kc7 24.Ne6 Kb8 25.Ke2 Rc1 26.Rc1 g4 27.Rc7 (27...Bf6 28.Qb7#) 1–0. blacksteelpipe – chess102, Live Game Caissa's Web, 2005.

4.Bb2= d6 5.a4=.

4.bc6 Nc6=+ 5.Nc3 Nf6 6.Bc4 d5–/+ 7.Bd3 e4 8.Be2 Bf5 9.h3 h6 10.g4 Bh7 11.f4 Be7 12.f5? g6 13.d3 gf5 14.de4? fe4 15.Bb2 Bb4 16.a3 Ba5 17.Rh2?? Qb6 18.Rb1 Qe3 19.Rg2 Bc3 20.Bc3 Qc3 21.Kf1 e3 22.Bd3 Bd3 23.cd3 Qe5 24.Rb7 0-0 25.Nf3 Qf4 26.g5 hg5 27.Rg5 Kh7 28.Ke2 Nd4 29.Nd4 Qd4 30.Qg1?? Qh4 31.Rg7 Kh8 32.Rb4 Qh5 33.Ke3 Qh3 34.Rg3 Qh6 35.Kf2 Rg8 36.Rh4 Qh4 37.Qg2 Rg3 38.Qg3 Qg3 39.Kg3 Rb8 40.Kf4 Rb3 41.Ke5 Kg7 42.d4 Ra3 43.Kd6 Rb3 (44.Ke5 a5-+) 0–1. blacksteelballs – grandasta, Live Game Caissa's Web, 2005.

4.Bb5 a6 5.Ba4 Nf6 6.Bb2 b5 7.Bb3 d5 8.d4 e4 9.a4=+ Bb4 10.Nd2 Qa5 11.c3 Bc3? 12.Bc3= Qc3 13.ab5?? Bg4=+ 14.Qc2?? Qc2 15.Bc2= a5 16.b6 0-0 17.h3 Bh5 18.Nb3 a4 19.b7 Ra7 20.Nc5 a3 21.Bd1?? Bd1+= 22.Kd1 Nfd7 23.Ne2 Nc5+= 24.Nc3?? Nd3-+ 25.Ke2 Rd8 26.Rhb1 Nb2 27.Nb5?? a2 28.Rb2+= Rb7 29.Raa2 Nc6 30.Nc3 Rb2 31.Rb2 f5 32.Rb5+/– Ne7 33.Rb7 Kf8 34.f3 ½–½. Steingraeber,Barbara – Ritschel,Stephan, RSS7D–2 remoteschach.de, 2002.

4.Bb5 a6 5.Be2 d5 6.Nf3 Nc6 7.Bb2 Bd6=+ 8.0-0 Nf6 9.d3 Qc7 10.Nbd2 e4 11.de4= de4 12.Nc4 Be7 13.Nd4 b5 14.Nc6= Qc6 15.Ne5 Qe6 16.c4 Qb6 17.cb5 ab5 18.Qb3 Ba6?? 19.Qf7+- (19...Kd8 20.Rfd1 Kc8 21.Qe7+-) 1–0. Bardyn,K – Frak,M, Radom–ch corr, 1993.

4.a3 d5 5.Bb2 Nd7 6.d4 ed4 7.Bd4 =+.

4.a3 Nf6 5.c3 d5 6.bc6 Nc6–/+ 7.Bb5 Bd7 8.Nf3 0-0 9.Ne5?? Ne5-+ 10.Bd7 Qd7 11.h3?? Bb6 12.Bb2 Rae8 13.f4 Ng6 14.g4 Nf4 15.Qf3 Ng6 16.h4 Ng4 17.h5 N6e5 18.Qf4 g6 19.hg6 fg6 20.Qg5 Rf5 21.Qh4 Nf3 22.Ke2 Nh4 23.Rh4 Rf2 24.Ke1 Qb5 25.Rg4 Qe2# 0–1. solidsteel – PUTUPORSHUTUP, Live Game Caissa's Web, 2005.

4.c4 cb5=+ 5.cb5 Nf6 6.Nc3 d6 7.d4 ed4 8.ed4 Bb6 9.Nf3 0-0=+ 10.Be2 Re8 11.0-0 Bg4 12.h3 Bh5 13.Be3 Nbd7 14.Bg5 Rc8 15.Nd5 Ba5 16.Bd3 Bc3 17.Rc1 Bd4+= 18.Bh7 Kh7 19.Rc8 Bf2 20.Rf2 Qc8 21.Bf6 Nf6 22.Ng5 Kg6=+ 23.Nf4? Kh6?? 24.Nh5+- Kg5 25.Ng7 Rd8 26.Qd4 Nh5?? 27.Qd5 Kh6 28.Nh5 Rg8 29.Nf6 Rg5 30.Qd6 Qh3 31.Ng4 Kg7 32.gh3 Rg6 33.Qd4 Kg8 34.Qa7 (34...Rg4 35.hg4+-) 1–0. Strand – Larsson,Bruno, SVE, 1989.

4.d4!? ed4 5.ed4=.

(--> 1.b4 e5 2.b5 d5 3.e3 c6).

4.Bb2 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 c6).

4.Bb2 Bd6 5.c4 Nf6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 Nf6 5.c4 c6).

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

4.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c6).

4.Be2 a6 5.d4 e4 6.bc6 Nc6 7.c4 =+.

4.Be2 Bd6 5.Nf3 (5.Bb2 0-0=) 5...0-0 (5...cb5 6.Bb5 a6 7.Be2=) 6.0-0 (6.Bb2 e4 7.Nd4 c5=) 6...Qc7 (6...cb5 7.Bb5 e4 8.Nd4=+) 7.d3 (7.Ba3 Ba3 8.Na3 d6=) 7...cb5=+ 8.d4 (8.Bb2!?=+) 8...e4–/+ 9.Ne5 Be5 10.de5 Qe5 11.c3 (11.Qd4 Qd4 12.ed4 b4–/+) 11...d5 (11...d6-+) 12.Bb2 (12.Ba3 Rd8-+) 12...b4 (better is 12...Qg5!? 13.f4 ef3 14.Rf3 Bg4-+) 13.Qd2–/+ bc3 14.Bc3 Qe6 15.Na3 Bd7 16.f3 Re8 17.fe4? Ne4-+ 18.Qe1 Nc3 19.Qc3 Qe3 20.Qe3 Re3 21.Nb5 Bb5 22.Bb5 a6 23.Ba4 b5 24.Bb3 Re5 25.g3? Nd7 26.Kg2 Nc5 27.Bc2 Rae8 28.Bb3 Nb3 29.ab3 R8e6 30.Ra5 Re3 31.Rb1 d4 32.b4 d3 33.Ra3 Re2 34.Kh3 d2 35.Ra2 Re1 36.Raa1?? Rb1 (37.Rb1 Re1-+) 0–1. icewater – Blacknight, Caissa.com, 2004.

4.Nf3 d6 5.Bc4 (5.Bb2 Be7=+) 5...a6 6.Ng5 (better is 6.bc6 Nc6 7.Bb2=+) 6...Be6?? (better is 6...d5 7.Be2 ab5–/+) 7.Be6 (7.Ne6!? fe6 8.bc6 bc6 9.Be6+/–) 7...fe6= 8.Ne6 Qe7 9.Nf8 Qf8 10.Ba3 Qe7 11.b6 0-0 12.Qf3 Nbd7=+ 13.h4 Nd5 14.Qe4 N5f6 15.Qc4 Kh8 16.Rh3 Nd5 17.Rg3 Qf6 18.Rf3 Qh4?? 19.Rf8+- Rf8 20.Bd6 Qf2 21.Kd1 Qg1 22.Ke2 Qg2 23.Kd3 Qf1 24.Ke4 Qc4 25.d4 Rf1 26.Be5 N7f6 27.Bf6 Nf6 (28.Ke5 Qd5#) 0–1. solidsteelpipe – coolcat, Live Game Caissa's Web, 2005.

4.Nf3 e4 5.Nd4 =+.

4.d3 Nf6 5.Nc3 Qb6 6.Qe2 cb5 7.Qd2 0-0 8.Rb1 a6 9.Nf3 Ng4 10.d4 Bd4 11.Nd5 (better is 11.Nd4!? Qd4 12.Qd4 ed4 13.Nd5+=) 11...Bf2-+ 12.Kd1 (12.Ke2 Qc5 13.h3 f5 14.hg4 fe4 15.Ne7 Qe7 16.Qd5 Qe6 17.Qe4 h6 (17...Qa2 18.Qh7 Kf7 19.Rb2+/–) 18.Kf2 d5-+ (18...Qa2? 19.Bd3+-)) 12...Qd6 13.h3 Be3 14.Ne3 Ne3 15.Ke2 Qd2 16.Kd2 Nf1 17.Rf1 Nc6 18.Ba3 Rd8 19.Bd6 f6 20.Ke3 Na5 21.Rb4? (21.Ke2 Nc4 22.Bc7-+) 21...Nc6 (better is 21...Nc4 22.Rc4 bc4-+) 22.Rb2?? (22.Rbb1 Re8 23.Rfd1-+) 22...b6 23.Bc7 Re8 24.Bb6 Bb7 25.Rd1 Nd4! 26.c3 Ne6 27.Rd7–/+ Bc6 28.Rd6 Rac8 29.g3 Ba8 30.Rb3 Rc4 31.Nd2 Ra4 32.a3 Ng5 33.c4 bc4 34.Rc3 Nf7 35.Rd7 Rc8 36.Rc7 Rb8 37.Bc5 Ra5 38.Rc4 Ng5?? 39.Bd6+/– Bb7 40.Re7+- Rd8 41.Rb7 Rd6 42.Rc8 (42.Rc8 Rd8 43.Rd8#) 1–0. Tiedemann,Joern (2020) – Gottwald,Bernhard (1950), RSS7E starter–25, 2011.

4.Nf3 d6 5.h3 Nf6=+ 6.Nc3 Nbd7 7.Bc4 h6 8.0-0 Nb6=+ 9.Qe2 Nc4 10.Qc4 Be6 11.Qa4 0-0 12.bc6= bc6 13.Nh2 d5 14.d3 d4 15.Ne2=+ Nh5 16.f4= Bd6 17.f5 Bd7= 18.c4 c5=+ 19.Qd1 Nf4 20.Nf4+/– ef4 21.Bf4 Bf4 22.Rf4 Qc7 23.Qf3 Rab8 24.Qg3 Rfe8 25.f6 g5+= 26.Rf3 Qg3 27.Rg3 Rb6 28.Rf1+= Kh8 29.Ng4 Kh7= 30.Re1 Kg6=+ 31.e5 Rb2 32.Ra1 h5 33.Nf2 h4 34.Rf3 Bc6 35.Nd1 Rd2 36.Rf2 Rd3 37.Re2 Ra3 38.Nf2 Rg3 39.Ng4?! Bf3 40.Rae1 Be2 41.Re2 Rc3 42.Nf2 Rc1 43.Kh2 Rc4 44.g3 Ra4 45.g4 c4 46.Nd1 d3 47.Rd2 Re5 48.Nc3 Ra3 49.Nb1 Re2 50.Kg1 Re1 51.Kf2 Rb1 (52.Ke3 c3 53.Kd3 cd2 54.Kd2 Rb2 55.Kc1 Raa2 56.Kd1 Rb1#) 0–1. Ginger Prince – color1972, ChessWorld.net, 2004.

4.Qf3 Nf6 5.Nc3 d6 6.Bd3 Bg4 7.Qe3?? (better is 7.Qg3+=) 7...Be3-+ 8.de3 0-0 9.Rb1 c5 10.Nf3 Nbd7 11.Nd2 Qa5 12.Bb2 Qc7 13.Nd5 Nd5 14.ed5 Nf6 15.c4 a6 16.b6 Qd8 17.h3 Bh5 18.Bc3 Nd7 19.Rb2 f5 20.g4 Bg6 21.gf5 Bf5 22.Be2 Nf6 23.Rg1 Ne4 24.Ne4 Be4 25.Rg4 Bf3 26.Rg3 Be2 27.Ke2 Qh4 (27...Qh4 28.Kd3 Rf2-+) 0–1. Tiedemann,Joern (2020) – Henkel,Phil (1935), RSS7E basic–43, 2011.

4.Nf3 Nf6 5.Bd3 =+.

4.Qh5 Bd4 5.c3 Nf6=.

4.bc6 bc6 5.ed5 cd5 6.Nf3 Bd6 7.Bb2 f6 8.Bb5 Bd7 9.Nc3=.

4.bc6 bc6 5.Qe2 de4 6.Qe4 Bd6 7.Nc3 Nf6 8.Qh4 Bf5 9.d3 =+.

4.bc6 bc6 5.Nf3=.

4.bc6 Nc6 5.ed5 Qd5 6.Nc3 Qa5 7.Nf3 Nf6 8.Bd3 Bb4 9.Bb2 0-0 10.0-0 Re8 11.Re1 a6 12.Ne4 Ne4 13.Be4 Bg4 14.c3 Bd6 15.Bh7 Kh8 16.Bb1 e4 17.Be4+/– Qh5 18.h3+- Bd7 19.Qb3 Rab8 20.c4 Ne5? 21.c5 Nf3 22.Bf3 Qc5 23.Qf7 Rg8 24.Bd5 Rbf8 25.Qh5 (25.Qd7?! Qf2 26.Kh1 Qg3 27.Qd6 Qd6=) 1–0. pierred – minto, internet, 2009.

4.bc6 de4 5.cb7 Bb7 6.Nc3 Nd7 7.f3 ef3 8.Nf3 Ngf6 9.Qe2 =+.

4.ed5 cd5 5.Bb2 Bd6 6.f4 (6.Qe2 f6 (6...Qf6 7.Nf3 Nd7 8.Ne5 Ne5 9.d4 Qf4 10.de5 Bc5 11.Nd2 Bg4+=; 6...Nd7+= 7.f4 f6 8.d4 Qe7 9.Nc3 Bb4 10.fe5 Ne5 11.0-0-0 Bg4=) 7.d4 Nd7 8.de5 fe5 9.c4 Ne7 10.cd5 Nd5 11.Nc3 Bb4=; 6.Nf3 Nd7 (6...Qe7 7.Be2 Qc7 8.a4 Nf6 9.Ba3 Ba3 10.Ra3 0-0 11.0-0 d4+=) 7.Qe2 Qe7 8.b6 Ngf6 9.ba7 d4 10.a4 Ra7 11.a5 0-0–/+) 6...Qe7 (6...ef4 7.Qe2 Kf8 8.Bd4+= Bf5 9.Nc3 Nf6 10.Nf3 Nbd7 11.Qd1 h5+=) 7.Nc3 (better is 7.Qe2!? f6 (7...Nd7 8.Nf3 f6 9.Nc3 Nb6 10.fe5 fe5 11.a4 Nf6+=) 8.Nc3= Be6 9.fe5 fe5 10.Qh5 Kd8 11.Nf3 Nf6+=) 7...ef4–/+ 8.Qe2 Bg4 (8...Nf6 9.Qe7 Ke7 10.Be2 Re8 11.Nf3 Kd8–/+) 9.Nf3 (9.Nd5 Be2 10.Ne7 Bf1 11.Kf1 Ne7-+) 9...Bf3 (better is 9...Nf6!?–/+ 10.a3 Qe6 11.h3 Bh5–/+) 10.gf3= Nf6 11.Rg1 Rg8 (11...Qe2=) 12.0-0-0 (better is 12.Rg5!?=) 12...Ba3?? (better is 12...Nbd7+=) 13.Ba3+- (13.Ba3 Qe2 14.Ne2+-) 1–0. Tiedemann,Joern (1940) – Gottwald,Bernhard (1925), RSX20E – NoEngine–Grossturnier–1, 2010.

4.ed5 cd5 5.Nf3=.

4.ed5= Qd5 5.Nc3 Qd8 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 Bb4 9.Ne4 Nf6 10.0-0 Ne4 11.Be4 Qd4 12.c3?? Bc3 13.dc3 Qe4 14.Re1 Qf5 15.Qd6 Nd7 16.Ba3 Qf6? 17.Rad1?? Rd8?? 18.bc6 bc6?? 19.Qc7 (19...Qe6 20.Rd6 Qd6 21.Qd6 c5 22.Rd1 Rb8 23.Qd7 Kf8 24.Bc5 Kg8 25.Qd8 Rd8 26.Rd8#) 1–0. trex1 – pru, Live Game Caissa's Web, 2005.

4.Nf3 Nf6 5.ed5 e4 6.Nd4 –/+.

4.Nf3 Bg4 5.Be2 (5.h3!? Bf3 6.Qf3+= (worse is 6.gf3 Nf6+=)) 5...Bf3= 6.Bf3 d4 (6...de4 7.Be4 Nf6 8.Bd3+=) 7.c4 (7.a4 Nf6+=) 7...cb5+= 8.cb5 Nf6 9.0-0 Qa5 10.a4 Nbd7 11.Na3 Be7 (11...Nb6!?=) 12.Nc4+= Qc7 13.d3 0-0 14.a5 Nc5 15.b6 ab6 16.Nb6 (16.ab6!? Qc6 17.Ne5 Qb6 18.Nc4+=) 16...Ra6= 17.Bg5 Qd6 18.Rb1 (18.Qc2 Bd8=) 18...Bd8 (worse is 18...Ra5 19.Nc4 Qc7 20.Na5 Qa5 21.Bd2+/–) 19.Nc4 Qc7 Attacks the isolani on a5 20.Qc2 Ncd7 (20...Nfd7 21.Bd2=) 21.Rfc1 Rc6 22.Bd2 Be7 23.Be2 Rb8 24.Qd1 b5? (better is 24...h6+=) 25.ab6!+- Nb6 26.Nb6?? (better is 26.Ne5 Rc3 27.Nf3+-) 26...Rc1 27.Qc1 Qc1 28.Rc1 Rb6+= 29.f4 Rb2= 30.fe5 Rd2 31.ef6 gf6 32.Kf2 Bd6 33.g3 Kg7 ½–½. Tiedemann,Joern (2020) – Maier,Ralf (2055), RSS7E easy–114, 2010.

4.Nc3 d5 5.bc6 Nc6 6.ed5 Nd5 7.Nd5 Qd5 –/+.

4.Nc3 d5 5.ed5 cd5 6.Be2 d4 7.Na4=+ Qa5 8.c3 Bd7 9.Rb1? dc3 10.Nc3 Bb4 11.Qc2 0-0 12.Nf3 Bg4 13.0-0 Nbd7=+ 14.Ne4 Rfe8 15.d4 Bf3 16.Bf3= Rac8 17.Nf6 Nf6= 18.Qf5 e4–/+ 19.Be2 Qa2 20.Rb2 Rc1?? 21.Ra2+- (21...Rf1 22.Kf1+-) 1–0. lesbian12 – kleenex2021, Live Game Caissa's Web, 2005.

4.d4 Ne4–/+ 5.de5 Bc5 6.Be3 (6.Qg4 Nf2 7.Qg7-+) 6...Be3-+ 7.fe3 Qh4 8.g3 Ng3! 9.Nf3 (9.hg3 Qg3 Double attack (9...Qh1 Pinning; 9...Qh1 Deflection; 9...Qg5 Decoy)) 9...Qb4 10.Nbd2? (better is 10.c3 Qb2 11.hg3 Qa1 12.Qb3-+) 10...Nh1 11.Qe2 (11.Bg2 Qb5 12.Bh1 0-0-+) 11...Qc3 12.Rc1 Qb2 (12...a6 13.Qd3 Qb4 14.bc6 Nc6 15.Bg2-+) 13.Rb1 (13.Kd1 Qb5 14.Qg2 Nf2 15.Qf2 Qa4-+) 13…Qc2 0–1. Tiedemann,Joern (2125) – Dorn,Norbert (2040), RS–Pyramide remoteschach.de, 2007.

4.Qe2 Bc5 5.Bb2 0-0 6.Be5= Re8 7.f4? d6–/+ 8.Bc3?? Re4 9.Bf6 Re2 10.Be2 Qf6 11.c3 Qf4 12.Nf3 Bg4 13.h3 Bf3 14.gf3 Nd7 15.bc6 bc6 16.a4 Re8 17.Na3 Ne5 18.Nc4 Nf3 19.Kd1 d5 20.Bf3 0–1. manofsteel2 – NOLIMITHOLDEM, Live Game Caissa's Web, 2005.

4.Qe2 d6 5.Ba3 Bd7 6.h3 cb5–/+ 7.Bb4 Nc6 8.c3 Nb4-+ 9.cb4 Bc6 10.f3 d5-+ 11.a4 a6 12.ab5? Bb5 13.d3 Bb4 14.Kf2 Nh5 15.g4 Qb6 16.Kg2 Nf4 17.Kh2 Ne2 18.Ne2 Bc6 19.Ng3 de4 20.fe4 Qf2 (21.Bg2 Qb2-+) 0–1. solidsteel – UPANDRUNNING, Live Game Caissa's Web, 2006.

3.a4 a6 4.Bb2 ab5 5.ab5 Ra1 6.Ba1 Bd7 7.e3 Nf6 8.d4 Be7 9.c4 ed4 10.ed4 d5 11.Be2 Bb4 12.Bc3 Bc3 13.Nc3 dc4 14.Bc4 Qe7 15.Nge2 0-0 16.Bd3 Re8 17.0-0 c6 18.Qc2 cb5 19.Bb5?? (19.Nb5 Nc6 20.Qd2 Nb4=) 19...Nc6 (better 19...Bb5 20.Nb5 Qe2 21.Qe2 Re2-+) 20.Bc6 bc6 21.Re1 Qd6 22.Ng3?? (better 22.f3=) 22...Re1-+ 23.Nf1 Qd4 (better 23...Ng4 24.g3 Qd4 25.h3-+) 24.Qd2 (24.Ne2 Qe5 25.Neg3-+) 24…Qd2 (24...Qd2 25.h3 Nd5 26.Kh2 Rf1 27.Ne4 Qf4 28.Ng3 Rf2 29.Kg1 Qg3 30.h4 Qg2) 0-1. BitChess (2165) - smurf42 (2750), Rated Bullet tournament DH1ZkyHD, lichess.org, 2016.

3.a4 Be6 4.Ba3 f5 5.e3 Nf6 6.d4 Be7 7.Nf3 e4 8.Ng5 Bd7 9.d5 h6 10.Ne6 Be6 11.de6 Qc8 12.Bc4 c6 13.Bb3 d5 14.c4 Qe6 15.Be7 Ke7 16.cd5 cd5 17.Bd5?? (better 17.Qd4 Nbd7 18.Nc3=+) 17...Qd5-+ 18.Qc1 Rd8 19.0-0 Nbd7 20.Nc3 Qe6 21.Qa3 Kf7 22.Rfd1 Rac8 23.Ne2 Ne5 24.Nf4 Qe7 25.Qa2 Nc4 26.Rd8 Qd8 (worse 26...Rd8 27.Qc4 Ke8 28.h3+/-) 27.Rc1 Qc7 28.h3 Kf8 (better 28...Qc5-+) 29.Ne6+- Kg8 (29...Ke7 30.Nc7 Rc7 31.Rc4 Rd7+-) 30.Nc7 Rc7 31.Rc4 Rf7 32.Rc8 (32.Rc8 Kh7 33.Qf7 a6 34.Rc7 Ne8 35.Re7 Kh8 36.Qg6 ab5 37.Re8) 1-0. CaissaSoeze (2370) - pepidda (2280), Rated Bullet tournament 6H7PMwdn, lichess.org, 2015.

3.a4 f5 4.g3 Nf6 5.Bg2 Be7 6.c4 0-0 7.Nc3 c6 8.Nf3 e4 9.Nd4 d5 10.cd5 cd5 11.0-0 Nbd7 (better 11...Qb6 12.e3 Bc5=) 12.Ne6+/- Qe8?? (better 12...Qa5 13.Nf8 Nf8+/-) 13.Nc7+- (13.Nf8?! Nf8 14.d4 Be6+-) 13...Qd8 14.Na8 b6 15.a5! Bb7 (15...ba5 16.Bh3 Decoy) 16.ab6 (better 16.Nb6!? ab6 17.a6 Ba8+-) 16...ab6 17.Nb6! Nb6 (17...Nb6 18.d4 Combination; 17...Qb6 18.d3 Combination) 18.d4 ed3 (18...Nc4 19.Rb1+-) 19.ed3 (19.Qd3 Ne4 20.Be3 Nc4+-) 19...d4 (19...Bb4 20.Qb3 Bc5 21.Be3 Be3 22.fe3+-) 20.Bb7 dc3 21.Qb3 Kh8 (21...Nfd5 22.Re1 Kh8 23.d4+-) 22.Qc3 Nfd5 Black intends f4 23.Qb3 f4 24.Ba3 Ba3 25.Ra3 f3 (25...fg3 26.hg3 Qg5 27.Ra6+-) 26.d4 Qd7 (26...Qd6 27.Bd5 Nd5 28.b6+-) 27.Bd5 Nd5 28.b6 h6 (28...Qb7 29.Rb1 h6+-) 29.b7 Qh3 (29...Nc7 30.b8Q Rb8 31.Qb8 Kh7 32.Qb1 Kg8 33.Qb7 Qd4 34.Qc7+-) 30.Qf3! Rf3 31.b8Q Kh7 32.Rf3 (32.Rf3 Qe6 33.Rf8+-) 1-0. allyouneedisluft (2440) - renr8360 (2260), Rated Blitz game, lichess.org, 2017.

3.c3 Nf6 4.e3 Bd7 (4...d5 5.d4 Bg4 6.f3=) 5.Qb3 (5.d4 e4=+) 5...Be7 (5...Be6 6.c4–/+) 6.Ba3 (6.Bc4 0-0=+) 6...0-0 7.Bc4 c6 8.bc6 Bc6 (8...bc6? 9.Qb7 d5 10.Qa8 Ba3 11.Na3+-; 8...Nc6?! 9.Qb7 Rb8 10.Qa6=+) 9.Qc2?? (better is 9.Nf3=+) 9...Bg2-+ 10.Qf5 Bh1 11.Nh3 (11.d3 d5 12.Bb5 Ba3 13.Na3 Qa5 14.Qe5 Bg2-+) 11...Be4 12.Qg5 Ne8 (better is 12...Qc8 13.d3 Bd3 14.Bd3 Qh3-+) 13.d3 (13.Qg3-+) 13...Bg5 14.de4 Bh4 (14...Qc8 15.Bf7 Kf7 16.Ng5 Kg6 17.f4 ef4 18.Nf3-+) 15.Nd2 Kh8 16.Nf3 f5 17.0-0-0 fe4 18.Nfg1 Qa5 19.Bb2 Nc6 20.Rd5 b5 21.Bb5 Qa2 22.Bc6 Rb8 23.Bb5 Nc7 24.Kc2 Nb5 25.c4 Nd4! 26.ed4 (26.Rd4 Rb2) 0–1. kingsteel – FREEFISCHERNOW, Live Game Caissa's Web, 2004.

3.c4 Nf6 4.e4 Ne4 5.c5?? (better is 5.Nf3–/+) 5...Nf2!-+ (5...dc5?! 6.Nf3 Bg4 7.Qe2-+; 5...Nc5?! 6.Bb2-+) 6.Kf2 Qh4 7.g3 Qd4 8.Ke1 (8.Kg2 Qa1 9.Qc2 Qd4 (9...dc5 10.Nc3 Be7 11.Bb2+=) 10.cd6 Bd6-+) 8...Qe4 9.Kf2 Qh1 10.Bc4 (10.h3 Qd5 11.Bb2-+) 10...d5 11.b6 (11.d4 Qh2 12.Kf1 Bh3 13.Nh3 Qh3 14.Kf2 Qh2 15.Kf1 Qh1 16.Ke2 Qg2 17.Kd3 Qg3 18.Kc2 dc4 19.Qe2-+) 11...Bc5 12.d4 Qh2 13.Kf1 Bd4 14.Bb5 c6 15.Nf3 Qf2 0–1. 823 – orane, Caissa.com, 2006.

3.c4 g6 4.Nc3 Bg7 5.e4 (5.g3 Ne7=) 5...Nd7=+ 6.Nf3 h6 (6...Ngf6 7.Be2=+) 7.d4 ed4 8.Nd4 Nc5 9.Be2 Bd7 10.0-0 Ne7 11.Be3 0-0 12.Qd2 Kh7 13.f4 f5 14.e5 de5 (14...Ne4 15.Ne4 fe4 16.Qc2 de5 17.fe5 Rf1 18.Rf1+=) 15.Nf3+- Ne6 16.Rad1 Be8 17.Qb2 (17.fe5?! Qd2 18.Rd2 f4+=; 17.Ne5?! Qd2 18.Rd2 g5=) 17...e4?? (17...Qc8 18.Ne5 g5+-) 18.Rd8 (18.Rd8 Rd8 19.Ne5+-) 1–0. Silent Move (2115) – texasnurse, redhotpawn.com (1), 2017.

3.d4 ed4 4.Qd4 Qf6 5.e3 Qd4 6.ed4 Nf6 7.Bd3 Be7 8.Bf4 0-0 9.Nf3 Bg4 10.0-0 Bf3 11.gf3 Nbd7 12.Re1 Rfe8 13.Kh1 Bf8 14.Nc3 Nb6 15.Ne4 Ne4 16.fe4 g6 17.Rad1 Bg7 18.c3 Na4 19.Rc1 Nb6 20.Bg5 d5 21.Bf4 de4 22.Be4 Bf8 23.Bb7 Rab8 24.Bc6 Re1 25.Re1 Bd6 26.Bd6 cd6 27.Re7 Rd8 28.Ra7 Nc4 29.Bd5 Nd2 30.Rf7 Kh8 31.a4 h5 32.b6 h4 33.a5 h3 34.b7 Re8 35.Re7! Re7 36.b8Q Kg7 37.Qg8 Kh6 38.Qf8 Rg7 39.Qf4 g5 40.Qd2 Re7 41.f4 Re1 42.Qe1 gf4 43.Qh4 Kg7 44.Qg5 Kf8 45.Qf6 Ke8 46.Bc6# 1–0. Dingbat (2015) – fubar (1900), ICS rated blitz match, 1998.

3.d4 f6 4.Nc3 Be6 5.Nf3 Bg4 6.h3 Bf3 7.ef3 c6 8.d5 c5 9.Bd3 Ne7 10.0-0 g5 11.f4! h5 (11...ef4 12.Qh5 Double attack (12.Qh5 Decoy); 11...gf4 12.Qh5 Double attack (12.Qh5 Decoy)) 12.fe5 de5 13.Qf3 g4? (better is 13...Ng8+-) 14.Qf6 gh3 (14...Rg8 15.Qe5 Qd7+-) 15.Bg6 Kd7 (15...Ng6 16.Qg6 Kd7 17.Qe6 Kc7 18.b6 ab6 19.Nb5#) 16.Qe6 Kc7 17.b6! ab6 (17...ab6 18.Nb5#) 18.Nb5# 1–0. usingprogram (2045) – migrobel, kurnik, 2011.

3.e3 Nd7 4.Bb2 g6 5.Nf3= Bg7 6.d4 Ne7 7.Bd3 0-0 (7...f5 8.de5 Ne5 9.Ne5 de5 10.0-0=) 8.0-0 Kh8 (8...c5 9.Nc3=) 9.Nbd2+= f6 (9...ed4 10.Bd4 Ne5 11.Ne5 de5 12.Bc5+=) 10.c4 (10.Re1 c5+=) 10...Re8 (10...f5 11.de5 de5 12.e4+=) 11.Ne4 (11.Qc2 a6+=) 11...Nf8 (11...ed4 12.Nd4 Ne5 13.Be2+=) 12.de5 de5 13.Qb3 (13.Qe2 a6+-) 13...Nf5 (13...Bg4 14.Be2 Qc8 15.Rfd1+=) 14.Rad1 Qe7 15.Nc3 (15.Ba3 Qf7+-) 15...Ne6 (15...Be6 16.e4 Nd6 17.Nd5+=) 16.Ba3+- Qf7 17.Be4 (17.c5 c6+-) 17...Bf8 (17...Ne7 18.Nd5 f5 19.Bc2+= (worse 19.Ne7 fe4 20.Nd2 Re7=+)) 18.c5!+- 1–0. onur604 (2320) – Profano (2275), lichess.org, 2020.

3.e3 g6 4.c3 (4.Bb2 Bg7=) 4...a6 (4...d5 5.d4 Nd7 6.c4=) 5.Qa4 (5.d4 e4=) 5...Bd7 6.Na3 (6.d4 c6=) 6...Ne7 (6...d5 7.d4 Bd6 8.c4=) 7.Qh4 (7.Nf3 Bg7=) 7...Bg7 8.Nf3 0-0 (8...ab5 9.Bb5 d5 10.0-0=+) 9.Ng5 (9.e4 d5=+) 9...h6 10.Nf7? (better is 10.Nf3!?=+) 10...Rf7 (10...Kf7 11.e4-+) 11.Qg3? (better is 11.Bc4-+) 11...Kh7 12.Bd3 Nf5 13.Bf5 gf5 14.h4 ab5 15.h5 Qf6 16.Qg6 Qg6 17.hg6 Kg6 18.Bb2 c5 19.0-0-0 Na6 20.Rdg1 Nc7 21.Nc2 Ra2 22.Ne1 Rb2 23.Kb2 b4 24.cb4 cb4 25.Nf3 e4 26.Kb3 ef3 27.gf3 Kh7 28.f4 Bc6 29.Kb4 Bh1 30.Rh1 Na6 31.Ka5 Rc7 32.Ra1 Rc2 33.Kb5 Rd2 34.Kb6 Rb2 (35.Ka7 Nc5-+; better is 34...Ba1 35.Kb7 Nb4 36.Kc7-+) 0–1. blacksteelpipe – ru31, Live Game Caissa's Web, 2005.

3.e4= b6 4.Bb2 (4.Nf3 Nf6=) 4...Nf6 5.Nc3 Bb7 (5...a6 6.d4=) 6.Qf3 (6.d4 ed4 7.Qd4 a6=) 6...Be7 (6...a6 7.a4=) 7.0-0-0 (7.Bc4 a6=) 7...c6 (7...a6 8.d4 ed4 9.Rd4=+) 8.Nh3 (8.d4 Nbd7=) 8...h6 (8...a6 9.bc6 Nc6 10.Qg3=+) 9.g4 (9.d4 Nbd7=) 9...Qd7 (9...a6 10.ba6 Bc8 11.Rg1–/+) 10.g5=+ hg5 11.Ng5 Qg4 (better is 11...a6 12.bc6 Qc6=+) 12.Qf5? (better is 12.Qe3!?=+) 12...Qf5-+ 13.ef5 c5 (13...Ng4 14.Nge4–/+) 14.Rg1 Rh2 15.f3 Nbd7 16.Nce4 Ne4 17.Ne4 Be4?? 18.fe4=+ Bf6 19.Bc4 0-0-0 20.Bf7+/– Rdh8 21.d4?? ed4–/+ 22.c3? Kc7?? 23.cd4+= cd4 24.Kb1 Nc5= 25.Bd4 Ne4=+ 26.Rc1 Kb8 27.Bf6 gf6 (28.Rc2 R2h3=+; < 27...Nf6 28.Rg7 Ne8 29.Be8 Re8 30.Rcg1+=). trex1 – meca, Live Game Caissa's Web, 2005.

3.e4 Be6 4.Nf3 h6 5.Nc3 g6 (5...Nf6 6.d4+=) 6.Be2 Bg7 7.0-0 Ne7 8.d4 ed4 9.Nd4 Bd7 10.Bb2 0-0 (10...a6 11.a4+-) 11.a4 (11.Qd2 a6 12.a4 Bc8+-) 11...c5 12.Nb3 Be6 13.Qd2 Qc7 14.Rfd1 Rd8 15.a5 f5 (better 15...Nd7!?+-) 16.ef5 Bf5? (better 16...Nf5 17.Bf3 Nd7+-) 17.a6 ba6 18.Bf3 Nbc6 (18...d5 19.Nd5 Nd5 20.Bd5 Kh7 21.Bg7 Qg7+-) 19.bc6 Nc6 (19...Kh7 20.Ra6 Rdb8 21.Nd5 Nd5 22.Bg7 (22.Qd5?! Bb2 23.Qd6 Qd6 24.Rd6 Rb6 25.Nc5 Ra6 26.Na6 Re8+-) 22...Qg7 23.Bd5+-) 20.Ra6 Nb4 (20...Nd4 21.Bd5 Kh7 22.Ba8 Ra8 23.Nd5+-) 21.Nb5 Qe7 22.Rd6 Rd6 23.Nd6 Bc2 (23...Rb8 24.Re1 Qf8 25.Bg7 Qg7 26.Nc5+-) 24.Re1 Qf8 (24...Qg5 25.Qg5 hg5 26.Ba8 Bb2 27.Nc5 g4+-) 25.Ba8 Qa8 26.Bg7 Kg7 (26...g5 27.Bh6 Qd5 28.Qc3 Qe5 29.Qe5 Bb3 30.Qg7) 27.Re7 Kg8 (27...Kf8 28.Rf7 Kg8 29.Qh6 Qg2 30.Kg2 Be4 31.Kg3 c4 32.Qg7) 28.Qh6 (28.Qh6 Qg2 29.Kg2 Be4 30.Ne4 c4 31.Nf6) 1–0. Silent Move (2115) – texasnurse, redhotpawn.com (1), 2016.

3.e4= Be7 4.Bb2 (4.Nc3 Nf6=) 4...Nf6=+ 5.Qe2 (5.Nc3 Nbd7=+) 5...0-0 6.Qe3 h6 (6...Be6 7.Nf3=+) 7.Bc4 (7.Nf3 Be6=+) 7...Nh7 (7...Nbd7 8.Nf3=+) 8.Qf3 (8.Nf3 a6=) 8...Be6 (8...Ng5 9.Qe3=+) 9.Be6= fe6 10.Qb3 (10.Qg4 Qd7 11.Nc3=) 10...c6 (better is 10...Ng5!?=) 11.Qe6+= Kh8 12.Nf3 cb5 13.Nh4?? (better is 13.d4+=) 13...Bh4-+ 14.g3 Qe7 15.Qd5 Bf6 16.g4 a6 17.h4 Bh4 18.Rh4 Qh4 19.Qd6 Nc6 20.Qc7 Qf2 (21.Kd1 Qf1#) 0–1. steelnuts – Troligt, Caissa.com, 2004.

3.e4 f5 4.ef5 Bf5=.

3.e4 Qh4 4.Nc3 Nf6 5.Nf3 Qh5 6.Be2 (6.d4 ed4 7.Qd4 Nbd7+=) 6...Bg4 (6...Qg6 7.0-0+=) 7.h3 Qh6 (7...Be7 8.d4=) 8.d3 Qh5 9.Bd2 (9.0-0 Bf3 10.Bf3 Qg6+/–) 9...Be7 10.0-0 Bh3 (better is 10...Bc8!?+=) 11.gh3+- Qh3 12.Nh2 0-0 (12...h5!?+/–) 13.Bg4 Qh4 14.Qf3 h5 (14...a6+-) 15.Bh3 Nh7 16.Qg3 (16.Nd5 Bg5 17.Be3 (17.Nc7?! Bd2 18.Qg3 Qg3 19.fg3 Ng5+-) 17...Be3 18.Qe3 (< 18.Ne3 Ng5 19.Qg3 Nh3 20.Kh1 Qg3 21.fg3 Ng5–/+) 18...Qg5 19.Kh1 Qe3 20.fe3+- (20.Ne3?! Nf6+-)) 16...Qf6?? (better is 16...Qg3 17.fg3 Bg5+-) 17.f4 (better is 17.Nd5 Qh4 18.Qh4 Bh4 19.Nc7+-) 17...ef4 18.Rf4 Qe5? (18...Qg5 19.Nf1 Qg3 20.Ng3+-) 19.Bf5 (better is 19.Nf3 Qc5 20.d4+-) 19...g6 20.Bg6 (better is 20.Nf3!? Qg7 21.Bh3+-) 20...fg6+= 21.Qg6 Qg7 22.Rf8 (better is 22.Qg7!? Kg7 23.Nd5 Rf4 24.Nf4+/–) 22...Nf8 23.Qg7 Kg7 24.Nd5 Nbd7?? (better is 24...Bf6+/–) 25.Ne7+- Ne6 (25...a6 26.Bc3 Kf7 27.Nd5+-) 26.Kh1 (26.Rf1 Ne5+-) 26...d5 (26...a6 27.Nf5 Kf7 28.ba6 Ra6 29.Nf3+-) 27.Rg1 Kf6 28.Nd5 Ke5 (28...Kf7 29.Rf1 Ke8 30.Nf3+-) 29.Nc3 (better is 29.Nf3 Kd6 30.Bb4 Ndc5 31.e5 Kd7 32.Bc5+-) 29...Rf8 30.Be3 Nd4 (30...c5 31.Nd5+-) 31.Bd4 (better is 31.Rg5 Kd6 32.Bd4+-) 31...Kd4 32.Ne2 (32.Nd1 Kc5+-) 32...Ke3 33.Re1 (33...Kf2 34.Rf1 Ke2 35.Rg1+/–; better is 33.Rg7 Ke2 34.Rd7+-) 1–0. Recruiter – thebrightside, Live Game Caissa's Web, 2004.

3.Nf3 e4 4.Nd4 Be7 =+.

3.Nf3 Be7 4.Nc3 Nf6 5.e4 Be6 6.Ng5 0-0 7.Ne6 fe6 8.Bd3 d5 9.0-0 a6 10.Re1 d4 11.Nb1 Qd7 12.Qe2 ab5 13.Bb5 c6 14.Bc4 b5 15.Bb3 Na6 16.d3 Bb4 17.Bd2 Bd6 18.a4 Nc5 19.a5 Qd8 20.Ba2 Re8 21.Qf3 Qd7 22.Bb3 Bc7 23.Bb4 Nb7 24.a6 Bd6 25.Bd6 Qd6 26.Nd2 Nc5 27.Nf1 Re7 28.Ra5 Nb3 29.cb3 Qb4 30.Rea1 Qb3 31.Nd2 Qc3 32.Qe2 Rea7 33.Nf3 Qc5 34.Ng5 Re7 35.Qa2 Qd6 36.a7 h6 37.Nf3 Rb7 38.Ra6 Nd7 39.Rc1 Nc5–/+ 40.Rc5 Qc5 41.Qe6 Kh8 42.Qc6 Qc6 43.Rc6 Raa7 44.h4 b4 45.Ne5 b3 46.Nc4 Ra1 47.Kh2 Rc1 48.e5 b2 49.Rc8 Kh7 50.Nb2 Rc8 51.Nd1 Rc1 52.Ne3 de3 53.fe3 0–1. GLChess211 – CometB27, computer chess game, 2000.

3.Nf3 Nf6 4.Nc3 Be7 5.e4 0-0 6.a4 (6.Bc4 Ne4 7.Ne4 d5 8.Ne5 de4=) 6...Bg4 7.h3 Bh5 (7...Be6 8.d4=+) 8.Be2= Bg6 (8...Nbd7=) 9.Nh4 (better is 9.d3!?=) 9...Be4–/+ 10.0-0 d5 (10...a6 11.d3 Bd5 12.Nf5–/+) 11.d3 Bg6 12.Bf3 (12.Ng6 fg6 13.Bg4 Bc5–/+) 12...c6 13.Ng6 (13...fg6 14.Re1–/+). ilmarinens (2295) – jjones (2730), net–chess.com, 2006.

3.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.b5).

3.Bb2 f5 4.c4 Nf6 5.e3 Be7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.b5).

3.Bb2 f5 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.b5).

3.Bb2 Nf6 4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

3.Bb2 Nf6 4.e3 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

3.Bb2 Nf6 4.e3 g6 5.c4 Bg7 6.Nf3 0-0 7.Be2 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.b5).

3.Bb2 g6 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 g6 4.b5).

3.Bb2 g6 4.e3 Bg7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.b5).

4.a4 a6 5.Nc3 Nb6 6.e3 Nf6 7.h3 d5 8.a5 Nc4–/+ 9.Bc4 dc4-+ 10.e4 Bb4 11.Qe2? Bc3 12.dc3 Qd3 13.Qd3 cd3 14.f3 Be6 15.g4 Bc4 16.Bg5 Bb5 17.Bf6 gf6-+ 18.Kd2 Rd8 19.h4 c5 20.Nh3 c4 21.Rhg1 h5 22.g5 Ke7 23.gf6 Kf6 24.Rg5 Rhg8 25.Rg8? Rg8-+ 26.Rg1 Rb8 (27.Rg5 Bd7-+; 26...Rg1!? 27.Ng1 Bd7 28.Kd1-+) 0–1. riverborne – thaiboxer2, Live Game Caissa's Web, 2005.

4.a4 Ngf6 5.a5 =+.

4.Nc3 Ngf6 5.g3 Be7 6.Bg2 0-0 7.d3 Re8 8.e3 Bf8 9.Nge2= Nc5 10.Na4 Na4 11.Qa4 d5 12.cd5 Nd5 13.0-0 Nb6 14.Qc2= a5 15.Bb2 Bd6 16.d4+= ed4 17.Bd4 Qe7 18.Nf4 g5 19.Nh5 Nd7 20.Ng7 Rd8 21.Nf5 Qe6 22.f4 g4 23.Nd6 cd6 24.Rfd1 Nf8 25.Bb6 Re8 26.Qc7 Qf6 27.Rac1 Qb2 28.Qd6 Re6?? 29.Qd8+- Qb5 30.Rc5 Qe8 31.Rg5 Kh8 32.Bd4 (32...f6 33.Qf6 Rf6 34.Bf6#) 1–0. Basman,Michael – Hallier,KH, Surrey, 1980.

4.Nf3 e4 5.Nd4 Ne5 =+.

4.d3 =+.

4.e3 Nf6 5.Nc3=.

4.e3 g6 5.Bb2 (5.Nf3 Nf6=) 5...Bg7 (5...Nf6 6.Nf3+=) 6.Nf3= Nh6 7.d3 (7.Nc3!?=) 7...0-0 8.Nbd2 f5 (8...a6!?+=) 9.h4= Ng4 10.Be2 h6 11.Qc2 Nd7 12.g3 (12.0-0 Qe7=) 12...c5 (12...a6 13.a4+=) 13.Nh2 Ngf6 14.e4 (14.Nhf3+=) 14...Nh7 (better is 14...a6!?–/+) 15.h5 g5 (15...gh5 16.ef5 Rf5 17.Nhf3=) 16.ef5+= Bf5 17.Bf3 Rb8? (better is 17...Be6 18.Bb7 Rb8+/–) 18.Bd5+- Kh8 19.g4 Nhf6 20.gf5 Nd5 21.cd5 Nb6 22.Qb3 Rf5 23.Ne4 (23.Nhf1 Rf4 24.Ne3 Rb4+-) 23...Rf4 24.Bc1 (24.0-0!? Qg8 25.f3 Rh4 26.Nd6 Rb4+-) 24...Rh4+/– 25.f3 Qd7 (25...Qe8 26.0-0+/–) 26.Bd2 (26.Be3 Qf7 27.0-0 Rf8+/–) 26...Qf7 27.Ke2?? (27.0-0 Nd5 28.Ng4+/– (28.Nd6?! Qh5 29.Ng4 e4 30.de4 Rf8=)) 27...Rf8?? (better is 27...Qh5 28.Raf1 Rh2 29.Rh2 Qh2 30.Rf2 Qh3 31.Nd6 Qd7–/+) 28.Raf1+= Qh5 29.Ng3?? Rh2-+ (29...Rh2 30.Ke1 Qh4 31.Rh2 Qh2-+ (31...Qg3?! 32.Rff2-+)) 0–1. Koster,Jeroen Louis – Mannhart,Marcel (2065), 40th Men Olympiad, 2012.

4.Nc3 Nf6 5.a4 Be7 6.d4 Nbd7 7.d5 (7.e3 0-0=+) 7...Nc5 8.g3 0-0 9.Bg2 Nfe4 (9...e4 10.a5-/+) 10.Ne4=+ fe4 (10...Ne4 11.Qc2=+) 11.Ba3 (11.Be3 Bf5=) 11...Bf5 12.Bc5 dc5 13.e3 Bd6 (13...a6 14.ba6 Ra6 15.Qc2=) 14.Qc2 Attacks the isolani on e4 14...Qf6 15.Ne2 Bg4 (15...Rf7 16.0-0+= (16.Be4?! Be4 17.Qe4 Qf2 18.Kd2 a6=)) 16.Nc3 Bf3 (16...Qh6 17.Ne4 (worse 17.Qe4 Rf2 18.Kf2 Rf8 19.Bf3 Qh5=+) 17...Bf5 18.a5+/-) 17.Ne4+/- Be4 (17...Qg6 18.Bf3 Rf3 19.Rc1+/-) 18.Be4+- (worse 18.Qe4 Qf2 19.Kd1 Qb2-/+) 18...g6 19.0-0 Qg5 20.Kg2 Rf7 21.a5 Kg7 22.a6 b6 23.Qe2 Raf8 24.h4 Qe7 25.Qg4 Qd7 (better 25...Rf6+-) 26.Qg5?? (26.Qd7 Rd7 27.f3 h5+-) 26...Qe7?? (better 26...Rf5 27.Bf5 Rf5-+) 27.Qe7+- Re7 28.f3 h5 29.Ra2 Ref7 30.Raf2 Rf6 31.g4 hg4 32.fg4 Rf2 33.Rf2 Rf2 34.Kf2 Be7 35.Kg3 Bf8 36.g5 Kf7 37.Kg4 Kg7 38.h5 gh5 39.Kh5 Kf7 40.Bf5 Bg7 41.Be6 Kf8 (41...Ke7 42.Kg6 Kf8 43.Kh7+-) 42.Kg6 Bh8 43.Kh7 Threatening mate: Kxh8 43...Bg7 44.e4 (44.e4 Bh8 45.Kh8 Ke7 46.g6 Kf6 47.g7 Kg5 48.g8Q Kf4 49.Qf7 Ke4 50.Qc7 Kd4 51.d6 Kc3 52.d7 Kb4 53.d8Q Ka4 54.Qd1 Ka3 55.Qa1 Kb3 56.Qce5 Kb4 57.Qec3) 1-0. petrobbo (2035) - Derventio (2070), ChessWorld.net, 2010.

5.Nf3 Nbd7 A) 6.Bb2 A1) 6...a6 7.Be2 (7.Nc3 Be7 8.Be2 Nc5 9.d4 ed4 10.Qd4 0-0 11.0-0; 7.Qc2 Be7 8.Nc3 0-0 9.Be2 e4 10.Nd4 Nc5 11.0-0) 7...Nc5 8.Nc3 Be7 9.d4 ed4 10.Qd4 0-0 11.0-0; A2) 6...Be7 7.Nc3 (7.Be2 0-0 8.0-0 Nc5 9.d4 ed4 10.Nd4 Qe8 11.Nc3; 7.Qc2 0-0 8.Be2 a6 9.0-0 e4 10.Nd4 Ne5 11.Nc3) 7...0-0 8.Be2 Nc5 9.0-0 a6 10.Qc2 ab5 11.cb5; A3) 6...e4 7.Nd4 (7.Bf6 Nf6 8.Nd4 a6 9.Nc3 ab5 10.cb5 d5 11.Be2) 7...Ne5 8.Nc3 Be7 9.Be2 0-0 10.0-0 c5 11.bc6; A4) 6...Nc5 7.Nc3 (7.Be2 Be7 8.Nc3 0-0 9.0-0 a6 10.Qc2 ab5 11.cb5; 7.d4 ed4 8.Nd4 a6 9.Nc3 Be7 10.Bd3 Nfe4 11.Nd5) 7...Be7 8.Be2 0-0 9.Qc2 a6 10.0-0 ab5 11.cb5; B) 6.Nc3 B1) 6...Be7 7.Be2 (7.Bb2 0-0 8.Be2 Nc5 9.d4 ed4 10.Nd4 Qe8 11.0-0; 7.Qc2 0-0 8.Be2 e4 9.Nd4 Nc5 10.0-0 Qe8 11.f4) 7...0-0 8.0-0 Ne4 9.Bb2 Ndc5 10.d4 ed4 11.Nd4; B2) 6...Ne4 7.Bb2 (7.Be2 Nc3 8.dc3 Be7 9.0-0 0-0 10.h3 Nc5 11.Ba3; 7.Qc2 Nc3 8.Qc3 Be7 9.Ba3 e4 10.Nd4 Nc5 11.Be2) 7...Be7 8.Be2 0-0 9.0-0 Ndc5 10.d4 ed4 11.Nd4; B3) 6...e4 7.Nd4 Nc5 8.Bb2 Be7 9.Be2 0-0 10.0-0 Bd7 11.a4; B4) 6...Nc5 7.d4 (7.Be2 Be7 8.d4 ed4 9.Nd4 Nfe4 10.Nd5 0-0 11.0-0; 7.Qc2 e4 8.Nd4 Be7 9.Be2 0-0 10.0-0 Qe8 11.f4) 7...ed4 8.Nd4 Be7 9.Be2 0-0 10.0-0 Qe8 11.Bf3; C) 6.d4 C1) 6...Be7 7.Nc3 (7.Be2 Ne4 8.Bb2 0-0 9.0-0 Bf6 10.Qc2 a6 11.Nc3; 7.c5 ed4 8.cd6 Bd6 9.Nd4 Ne5 10.Nc3 Ne4 11.Qb3) 7...0-0 8.Be2 Ne4 9.Bb2 Nc3 10.Bc3 e4 11.Nd2; C2) 6...e4 7.Ng5 (7.Nfd2 c5 8.bc6 bc6 9.Nc3 Rb8 10.Be2 Be7 11.Qa4) 7...Nb6 8.Be2 Ng4 9.h4 d5 10.cd5 Nd5 11.Bd2; D) 6.Qc2 D1) 6...Nb6 7.Nc3 (7.a4 Be7 8.Nc3 0-0 9.a5 Nbd7 10.d4 ed4 11.ed4; 7.Be2 Be7 8.Nc3 0-0 9.0-0 Be6 10.d3 a6 11.Ng5) 7...Be7 8.Be2 0-0 9.0-0 Be6 10.d3 a6 11.Ng5; D2) 6...e4 7.Nd4 Nc5 8.Nc3 Be7 9.Be2 0-0 10.0-0 Qe8 11.f4; D3) 6...Nc5 7.Nc3 (7.Be2 Be7 8.0-0 0-0 9.d4 ed4 10.Nd4 Qe8 11.Nc3; 7.d4 e4 8.Nfd2 Ne6 9.Nc3 Be7 10.Be2 0-0 11.0-0) 7...Be7 8.Be2 0-0 9.0-0 e4 10.Nd4 Qe8 11.f4; D4) 6...Be7 7.Be2 (7.Nc3 0-0 8.Be2 Nc5 9.0-0 e4 10.Nd4 Qe8 11.f4; 7.Bb2 e4 8.Nd4 Ne5 9.Nc3 0-0 10.Be2 a6 11.f4) 7...0-0 8.Bb2 a6 9.Nc3 ab5 10.cb5 e4 11.Nd4; E) 6.Be2 E1) 6...Nc5 7.Nc3 (7.Bb2 Be7 8.Nc3 0-0 9.0-0 a6 10.Qc2 ab5 11.cb5; 7.0-0 Be7 8.Nc3 0-0 9.Bb2 a6 10.Qc2 ab5 11.cb5) 7...Be7 8.Bb2 0-0 9.0-0 a6 10.Qc2 ab5 11.cb5; E2) 6...e4 7.Nd4 Ne5 8.Nc3 Be7 9.f4 ef3 10.gf3 f4 11.Qc2; E3) 6...a6 7.Nc3 (7.0-0 Be7 8.Nc3 0-0 9.d4 Ne4 10.Bb2 Nc3 11.Bc3; 7.Bb2 Be7 8.Nc3 Nc5 9.d4 ed4 10.Qd4 0-0 11.0-0) 7...Be7 8.0-0 0-0 9.d4 Ne4 10.Bb2 Nc3 11.Bc3; E4) 6...Be7 7.0-0 (7.Bb2 0-0 8.0-0 Nc5 9.d4 ed4 10.Nd4 a6 11.Nc3; 7.Nc3 0-0 8.0-0 Nc5 9.Bb2 a6 10.Qc2 ab5 11.cb5) 7...Nc5 8.Nc3 0-0 9.Bb2 Bd7 10.Qc2 Qe8 11.d4.

5.Nf3 e4 A) 6.Ng5 A1) 6...Ng4 7.Nh3 (7.h3 Nf2 8.Kf2 Qg5 9.Nc3 c6 10.d4 Be7 11.Be2; 7.f3 Qg5 8.fg4 Be7 9.Be2 0-0 10.0-0 Nd7 11.Nc3) 7...Nd7 8.Nf4 Nc5 9.Bb2 Bd7 10.Be2 a6 11.0-0; A2) 6...h6 7.Nh3 Nbd7 8.Nf4 Ne5 9.Nc3 g5 10.Nfd5 Bg7 11.h4; A3) 6...Be7 7.Nc3 (7.Be2 0-0 8.Nc3 h6 9.Nh3 Nbd7 10.Nf4 Nc5 11.0-0; 7.Bb2 Ng4 8.Nh3 0-0 9.Nf4 Bg5 10.Nc3 Bf4 11.ef4) 7...0-0 8.d4 Ng4 9.Nh3 c5 10.dc5 dc5 11.Qd5; B) 6.Nd4 B1) 6...Be7 7.Nc3 (7.Be2 c5 8.bc6 Nc6 9.Qb3 d5 10.0-0 Na5 11.Qc2; 7.Na3 0-0 8.Be2 c5 9.bc6 bc6 10.Rb1 c5 11.Ndb5) 7...c5 8.bc6 Nc6 9.Qb3 Na5 10.Qc2 0-0 11.Be2; B2) 6...c5 7.Ne2 (7.bc6 Nc6 8.Qb3 Nd4 9.ed4 Be7 10.Nc3 Kf7 11.Be2; 7.Nb3 Be7 8.Nc3 0-0 9.d4 a6 10.Be2 ab5 11.Nb5) 7...Nbd7 8.Nbc3 Ne5 9.Nf4 Bd7 10.Bb2 Be7 11.Be2.

5.Nf3 Be7 A) 6.Be2 A1) 6...0-0 7.Nc3 (7.0-0 e4 8.Nd4 c5 9.bc6 Nc6 10.Qb3 Bd7 11.Nc3) 7...e4 8.Nd4 c5 9.bc6 bc6 10.c5 dc5 11.Qb3; A2) 6...e4 7.Nd4 (7.Ng5 0-0 8.Nc3 a6 9.d4 ed3 10.Bd3 h6 11.Nf3) 7...c5 8.bc6 Nc6 9.Qb3 0-0 10.Nc3 Na5 11.Qc2; B) 6.Bb2 B1) 6...0-0 7.c5 (7.Nc3 e4 8.Nd4 c5 9.Nde2 Nbd7 10.Nf4 Ne5 11.Be2; 7.Be2 e4 8.Nd4 c5 9.bc6 bc6 10.0-0 c5 11.Nb3) 7...Nbd7 8.cd6 cd6 9.Nc3 Nc5 10.d4 ed4 11.Nd4; B2) 6...c6 7.Be2 (7.Nc3 e4 8.Ng5 Ng4 9.f4 h6 10.Nh3 0-0 11.Be2; 7.Qc2 e4 8.Nd4 0-0 9.Nc3 a6 10.bc6 Nc6 11.Be2) 7...0-0 8.Nc3 e4 9.Ng5 h6 10.Nh3 Nbd7 11.0-0; B3) 6...e4 7.Nd4 (7.Ng5 0-0 8.Be2 c6 9.Nc3 h6 10.Nh3 Nbd7 11.0-0) 7...0-0 8.Be2 c5 9.bc6 bc6 10.Nc3 c5 11.Nb3; C) 6.Nc3 C1) 6...0-0 7.c5 (7.Be2 e4 8.Nd4 c5 9.bc6 Nc6 10.Rb1 Nd4 11.ed4; 7.d4 e4 8.Ng5 c5 9.Be2 h6 10.Nh3 cd4 11.Qd4) 7...Nbd7 8.Bc4 Kh8 9.cd6 cd6 10.0-0 Nb6 11.Bb3; C2) 6...Nbd7 7.Be2 (7.Bb2 0-0 8.Be2 Nc5 9.0-0 Bd7 10.d4 ed4 11.Qd4; 7.d4 Ne4 8.Bb2 Nc3 9.Bc3 e4 10.Nd2 Nf6 11.Be2) 7...0-0 8.0-0 Nc5 9.Bb2 Bd7 10.d4 ed4 11.Qd4; C3) 6...Ne4 7.Bb2 (7.Qc2 Nc3 8.Qc3 Be6 9.Be2 Nd7 10.0-0 0-0 11.Qc2; 7.Nd5 0-0 8.d3 Nf6 9.Ne7 Qe7 10.Be2 a6 11.0-0) 7...0-0 8.Qc2 Nd7 9.Be2 Ndc5 10.d4 ed4 11.Nd4; C4) 6...e4 7.Ng5 (7.Nd4 c5 8.bc6 Nc6 9.Qb3 0-0 10.Be2 Na5 11.Qc2) 7...Ng4 8.Nh3 Nd7 9.Nf4 Nc5 10.Be2 0-0 11.0-0.

5.Nf3 g6 6.Bb2 Bg7 (6...e4 7.Ng5 (7.Nd4 c5 8.bc6 Nc6 9.Be2 Qb6 10.Qb3 Be7 11.0-0) 7...Bg7 8.Nc3 Ng4 9.h3 Qg5 10.hg4 0-0 11.Qc2; 6...Bh6 7.Nc3 (7.Be2 0-0 8.Nc3 Nbd7 9.0-0 Qe7 10.h4 Nc5 11.d4; 7.h4 0-0 8.Be2 Nbd7 9.Nc3 Nc5 10.0-0 Qe7 11.d4) 7...0-0 8.Be2 Qe7 9.0-0 Nbd7 10.h3 a6 11.ba6; 6...Nbd7 7.Nc3 (7.Be2 Bg7 8.Nc3 0-0 9.0-0 Nc5 10.d4 ed4 11.ed4; 7.d4 Bg7 8.Be2 ed4 9.ed4 0-0 10.Nc3 Ne4 11.0-0) 7...Bg7 8.Be2 0-0 9.0-0 Nc5 10.d4 ed4 11.ed4) 7.Be2 (7.Nc3 Nbd7 8.Be2 0-0 9.0-0 Nc5 10.Qc2 Bd7 11.d4; 7.d3 0-0 8.Nc3 Nbd7 9.Be2 Nc5 10.0-0 Bd7 11.d4) 7...Be6 (7...0-0 8.Nc3 Nbd7 9.0-0 Nc5 10.d4 ed4 11.ed4) 8.0-0 (8.Ng5 Qe7 9.Nc3 0-0 10.0-0 Nbd7 11.d4) 8...Ng4 (8...Nbd7 9.Ng5 Bg8 (9...Qe7 10.Nc3 0-0 11.d4) 10.d4= (10.Nc3 h6 11.Nf3) 10...h6 11.Nf3; 8...0-0 9.Ng5 Re8 10.Nc3 Nbd7 11.d4) 9.h3+/= h5 (9...Nh6+= 10.Nc3 0-0 11.Qc2) 10.h4 (10.Nc3 a6+/– (10...Nd7 11.Qc2) 11.c5; 10.c5 Nh6 11.Qc2) 10...Qe7 (10...Bf6 11.Ng5+= (11.g3=)) 11.Ng5+/= (11.Nc3+/–) 11...Nd7 12.Nc3 (12.Ne6?? is suicide 12...Qh4 (12...Qe6?! 13.Qc2=) 13.Bg4 hg4 14.Ng7 Kf7-+) 12...Bf6 13.f4 (13.Ne6 Qe6 14.f3 Nh6+=) 13...Bg5 (13...Nb6 14.Ne6 Qe6 15.Nd5 Nd5 16.cd5=) 14.fg5 Rf8 15.g3 (15.Nd5!? Bd5 16.cd5=) 15...0-0-0 16.a4 Nb6 17.Qb3 (better is 17.Bg4 fg4 18.d3+=) 17...d5 (better is 17...Qf7+= and Black is still in the game) 18.Ba3+/– Qf7 19.Bf8 Nc4 20.Qc2 (20.Bg4 Qf8 21.Bf5 Bf5 22.Rf2+/–) 20...Nce3? (better is 20...Rf8!? would keep Black in the game 21.Bg4 hg4=) 21.de3+/– Ne3 22.Qd3 d4? (22...Nf1 23.Bb4 e4+-) 23.Bb4+/– Bc4 24.Qd2 Nf1 25.Bf1 dc3 26.Qc3 Bf1 27.Rf1 (27.Kf1?! f4 28.Bc5 fg3 29.Kg2 b6=) 27...e4 28.Qe3 (better is 28.Rc1+/–) 28...b6?? (better is 28...Rd3 was necessary 29.Qa7 Rg3 30.Kh2 Qc4 31.Kg3 Qf1 32.Qa8 Kd7=) 29.Qe4+-! Kb8 (29...fe4 30.Rf7 Deflection Pinning) 30.Qe7 Qd5 31.Rf2 Qd4 (31...Rd7 32.Qe3+-) 32.Qe1 (better is 32.Bd2!? and White can already relax 32...Rc8+-) 32...Rd5 33.Bc3 Qa4?? (33...Qc5 34.Kg2 Kb7+-) 34.Qe8 Rd8 (34...Kb7 what else? 35.Qc6 Kc8 36.Qd5 Qe4 37.Qe4 fe4+-) 35.Qd8 Kb7 36.Qd5 Kc8 37.Rd2 (37.Qa8 Kd7 38.Rd2 Qd4 39.Rd4 Ke7 40.Qd8 Kf7 41.Qc7 Kg8 42.Rd8) 37...Qe4 38.Qe4 fe4 39.Kf2+- 1–0. Hoelldorfer,August – Benzinger,Alfred, Bayern–ch Seniors, 1994.

5.Nf3 g6 6.Nc3 A) 6...Nbd7 7.Be2 (7.d4 Bg7 8.Ng5 Nb6 9.Be2 Ng4 10.Nf3 e4 11.Nd2; 7.Ba3 Bg7 8.Be2 0-0 9.0-0 Ne4 10.Qc2 Nc3 11.Qc3) 7...Bg7 8.0-0 Ne4 9.Bb2 0-0 10.Qc2 Ndc5 11.d4; B) 6...Bh6 7.Ba3 (7.Be2 0-0 8.Bb2 Qe7 9.h4 e4 10.Nd4 c5 11.bc6; 7.Bb2 0-0 8.Be2 e4 9.Nd4 c5 10.bc6 Nc6 11.Na4) 7...Nbd7 8.Be2 0-0 9.0-0 a6 10.Bb4 Qe7 11.Qc2; C) 6...Bg7 7.Be2 (7.Qc2 e4 8.Nd4 0-0 9.Be2 c5 10.bc6 bc6 11.Qa4; 7.Qb3 Nbd7 8.Ba3 e4 9.Nd4 Nc5 10.Qc2 a6 11.Bb4) 7...Nbd7 8.Ba3 Ne4 9.0-0 0-0 10.Qc2 Nc3 11.Qc3; D) 6...e4 7.Nd4 (7.Ng5 Bg7 8.Be2 0-0 9.Qb3 h6 10.c5 d5 11.Nh3) 7...c5 8.bc6 Nc6 9.Be2 Nd4 10.ed4 Bh6 11.0-0.

5.Nf3 g6 6.Be2 A) 6...Bh6 7.d4 (7.Nc3 0-0 8.Qc2 e4 9.Nd4 c5 10.bc6 Nc6 11.Rb1; 7.0-0 0-0 8.Nc3 Be6 9.Bb2 Nbd7 10.d4 e4 11.Nd2) 7...Nbd7 8.0-0 e4 9.Nfd2 0-0 10.Nc3 Qe7 11.a4; B) 6...e4 7.Nd4 (7.Ng5 h6 8.Nh3 Nbd7 9.Nf4 Ne5 10.Bb2 Kf7 11.h4) 7...c5 8.bc6 Nc6 9.Nc3 Nd4 10.ed4 Bh6 11.0-0; C) 6...Nbd7 7.0-0 (7.Nc3 Bg7 8.Ng5 Nc5 9.d4 Ne6 10.Ne6 Be6 11.0-0; 7.Qc2 Bg7 8.Nc3 e4 9.Nd4 Nc5 10.0-0 0-0 11.Bb2) 7...Bg7 8.Nc3 0-0 9.Qc2 e4 10.Nd4 Nc5 11.Bb2; D) 6...Bg7 7.Nc3 (7.0-0 0-0 8.Nc3 Nbd7 9.Qc2 e4 10.Nd4 Nc5 11.Bb2; 7.Bb2 e4 8.Nd4 c5 9.bc6 Nc6 10.Qb3 0-0 11.0-0) 7...Nbd7 8.0-0 0-0 9.Qc2 Qe7 10.d4 a6 11.ba6.

4.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5).

4.Nf3 Be7 5.c4 0-0 6.Nc3 Bg4 (6...Bf5 7.Be2=+) 7.h3= Bf3 (7...Bf5!?=) 8.Qf3+- (8.gf3?! Nbd7=+) 8...Qc8 9.Rb1 Nbd7 10.d4 Nb6 11.Bd3 a6 (11...c5 12.d5+-) 12.ba6 (12.c5 Nbd7 13.ba6 ba6+-) 12...Ra6+- 13.c5 ed4? (better 13...Na4 14.Ba6 Nc3 15.Qb7 Qe6 16.de5 Nd7 17.cd6 cd6+-) 14.Ba6+- ba6 15.cb6 dc3 16.b7 Qb8 17.Qc6 h6 (17...d5 18.0-0+-) 18.Ba3 Ne4 (18...Re8+-) 19.Qe4 c2 1–0. Silent Move (2115) – brendangibson, redhotpawn.com, 2016.

4.Nc3 a6 5.Nf3 ab5 6.Bb5 Bb5 7.Nb5 Qd7 8.Nc3 Nf6 9.0-0 Be7 10.Rb1 b6 11.d4 ed4 12.Nd4 0-0 13.Nf5 Nc6 14.Nd5 Nd5? (better is 14...Rfd8+=) 15.Qg4+- (15.Qd5?! Bf6=+) 15...g6?? (better is 15...Qf5 16.ef5 Nc3+-) 16.Nh6 Kg7 17.Qd7 (17.ed5?! Ne5 18.Qd7 Nd7=) 17...Ne5 18.Bb2 (18.ed5?! Nd7 19.a3 Rfe8=) 18...Rad8 19.Be5 (better is 19.Qc6! Nf6 20.Qc7 Rfe8+-) 19...de5 20.Qg4 (20.ed5 Rd7 21.Ng4 Rd5-+) 20...Nf4 (20...Kh6 21.ed5 Rd5+-) 21.Nf5 Kf6 22.Qh4 Ke6 (22...g5 23.Qh7 Ng6+-) 23.Qe7# 1–0. b4_player (2215) – seyyit (1610), GameColony.com, 2003.

4.Bc4 a6 5.Qf3 Qe7 6.Nc3 =+.

4.Bc4 h6 5.a4 Nf6 6.Bd5 (better is 6.Nc3=) 6...c6–/+ 7.bc6 (better is 7.Bc4 Ne4 8.Nf3–/+) 7...Bc6 (better is 7...bc6!? 8.Ba2 Ne4–/+) 8.Bc6 Nc6 9.Ba3 (9.Nc3!?=+) 9...Ne4–/+ 10.Nc3 (10.Ne2 Be7–/+) 10...Nc3 (10...Qh4 11.Ne4 Qe4 12.Kf1-+) 11.dc3 Be7 (11...Qa5 12.Ne2-+) 12.Qd5 (12.Nf3 Qa5 13.0-0 Qc3–/+) 12...0-0 (12...Qa5 13.Qa5 Na5 14.Nf3-+) 13.Nf3 (13.Rd1 Qc8 14.Ne2 Qg4–/+) 13...Rb8 (13...Qa5 14.Qa5 Na5 15.Bb4-+) 14.h4 (14.0-0!?–/+) 14...Qd7 15.h5 (15.0-0 Qf5-+) 15...Rfd8 (15...Qg4 16.0-0-+) 16.Rh3 (16.a5 Qc7-+) 16...Qf5 17.Rc1 Qg4 18.Rd1 Qg2 19.Rg3 Qh1 20.Ke2 Qh5 21.Rd3 Qh1 22.Rg1?? Qh5 23.Re3?? (23...Bg5 24.Re4-+; 23.Rg3 Bg5 24.Qe4-+). manofsteel5 – maqui, Live Game Caissa's Web, 2005.

4.Nc3 c6 5.bc6 bc6 6.Bc4 Be6 7.Be6= fe6 8.Nf3 Be7 9.0-0 0-0 10.a4 Na6 11.d3 h6 12.Ne2 Qc7. Zamoht – brawn, ChessWorld.net, 2005.

4.Nc3 Be6 5.a4 Be7 6.Ba3 0-0 7.Nf3 Nbd7 8.d4 ed4 9.Nd4 a6 10.Bd3 Ne5 11.0-0 Nd3 12.cd3 Bd7 13.Rc1 c5 14.bc6= bc6 15.Nce2 c5=+ 16.Nf3 Bc6 17.Nc3 Qd7 18.Re1 Rfe8 19.d4 cd4 20.Qd4 Rad8 21.h3 Bf8 22.Rcd1 Qc7 23.Ng5 h6 24.Nd5?? Nd5?? 25.ed5=+ Re1 26.Re1 Bb7 27.Ne4= Qa5 28.Nc3 Qc7 29.Rc1 Qe7 30.Qb6 Qd7 31.Rb1+= Rb8 32.Qd4 Rd8 33.a5 g6? 34.Ne4+- Bg7 35.Qb6 Rb8?? 36.Bd6+- Re8 37.Nc5 Bd4 38.Qb7 Qb7?? 39.Nb7 (39...f5 40.Rd1+-) 1–0. michaelanthony – Queenwomen, ChessWorld.net, 2005.

4.Nc3 Be7 5.Bc4 0-0 6.Nge2 c6 7.0-0 (7.bc6 Nc6 8.d3 Be6+=) 7...cb5 (7...d5!? 8.ed5 cd5–/+) 8.Bb5= a6 9.Ba4 h6 10.f4 ef4 11.Rf4 Nbd7 12.d4 Nh7 (12...b5 13.Bb3=) 13.Rf1 b5 14.Bb3 Bb7 15.d5 (15.Nf4 Nhf6 16.Qd3 Rc8+=) 15...Ne5 16.Bb2 Bg5 17.Ng3 Bc8 18.Qe1 g6 (18...Nf6 19.Nf5 Qb6 20.Kh1 Bf5 21.Rf5=) 19.Rd1 Bg4 20.Rd4 Qb6 21.Nce2 Be3 22.Kh1 Be2 23.Ne2 Bd4 24.Bd4 Qc7 25.Nf4 a5 (25...Qe7 26.Nd3–/+) 26.c3 (better is 26.Be5!? a4 27.Bd4 ab3 28.cb3+=) 26...a4–/+ 27.Bc2 Ng5 28.Qg3 Qc4 29.Kg1 (better is 29.Ra1!? b4 30.h4 bc3 31.Qc3-+) 29...Qa2-+ 30.Bd3 Nd3 (30...Qd2 31.Qh4 a3 32.Be2-+) 31.Nd3 Ne4?? (31...Rae8 32.Qf4 Re4 (32...Ne4 33.Qh6 f6 34.Qg6 Kh8 35.Qh6 Kg8 36.Re1=) 33.Qd6 Rg4-+) 32.Qf4= Ng5?? (better is 32...Qd2 33.Qe4 a3=) 33.Qf6 1–0. dusterstar (1665) – pertz, gameknot.com, 2011.

3.b6 ab6–/+ 4.Nc3 (4.d4 d5–/+) 4...d5 5.d4 (5.Bb2 Nf6–/+) 5...f5 (5...Nf6 6.Rb1-+) 6.f4 (6.Rb1 Nf6–/+) 6...c5 (6...Bb4 7.Bb2-+) 7.Be3 (better is 7.e3 Nf6 8.Bb5 Nc6 9.Nge2–/+) 7...Qf6 (7...Nf6!? 8.Nb5-+) 8.Nb5 (8.Nd5 Qc6 9.c4 Be6 10.dc5 bc5=+) 8...Bd6 (8...Qc6 9.a4 Nf6 10.Bd2-+) 9.c3 (9.c4 Ne7–/+ (9...dc4 10.dc5 Bc5 11.Bc5 bc5 12.Nc7 Kf7 13.Na8 Qc3 14.Kf2=)) 9...Bd7 (better is 9...Ne7–/+) 10.Nc7?? (better is 10.Nd6 Qd6 11.Qb3–/+) 10...Bc7-+ 11.g3 Nc6 12.dc5 Qc3 13.Bd2 Qc5 14.Rc1 Qa3 15.e3 Qa2 16.Be2 h6 17.Bh5 Kd8 18.Ne2 g5 19.0-0 gf4 20.Nc3 Qb2 21.Rb1 Qa3 22.Nd5 (22...fg3 23.Bc3-+). Jolilein – Gno, mySchach.de, 2005.

3.Nc3!? Nf6 4.d3 =+.

3.c4 a6 4.Nc3 ab5 5.cb5 Nf6 6.f3 d5 7.e3 Bd6 8.fe4 de4 9.Nh3 (9.Qc2 Qe7-/+) 9...Bh3 10.gh3 Nbd7 11.Bg2 (11.d4 ed3 12.Qd3 Ne5-+) 11...Nc5-+ 12.Qc2 Qe7 13.Bb2 Nd3 14.Ke2 Nb2 (14...Qe5 15.Be4 Ne4 16.Qd3 Qh5 17.Ke1 Qh4 18.Ke2-/+) 15.Qb2 0-0 16.Rag1 Be5 17.Qb3 (17.Rd1 Ra3 18.d4 ed3 19.Rd3 Rfa8-+) 17...Ra3 18.Qc4? (18.Nd5 Qd6 19.Nf6 Bf6 20.Qc2 Qd3 21.Qd3 ed3 22.Kf3-+) 18...Bc3 19.dc3 Rfa8 20.Ra1 R8a4 21.Qa4 (21.Qb3 Rb3 22.ab3 Ra3-+) 21...Ra4 22.Rhd1 Kf8 23.Rd4 (23.b6 cb6 24.Rd4 Qa3-+) 23...Qc5 24.Kd2 (24.Kf2 Qc3 25.Ra4 Qb2 26.Kg1 Qa1 27.Bf1 Qe1-+) 24...Nd5 (better 24...Rd4!? 25.cd4 Qb4 26.Kd1 Qb5 27.Ke1-+) 25.Ra4 Qe3 26.Kc2 Qc3 27.Kb1 Qd3 28.Kc1 Qe3 29.Kb2 Qd2 30.Ka3 (30.Kb3 Qc3) 30…Qc3 0-1. kirklandlake - Bazza3 (2545), ChessWorld.net, 2018.

3.c4 c6 4.Nc3 Nf6 5.Qc2 d5 6.bc6 bc6 7.cd5 cd5 8.Nb5 Qa5?? (better 8...Kd7=) 9.Qc8+- Ke7 10.Ba3 Qb4 11.Bb4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.c4 Nf6 4.Nc3 Be7 (4...a6 5.b6=+) 5.Bb2 (5.Qc2 a6 6.Ne4 ab5 7.cb5 Ne4 8.Qe4 d5=) 5...0-0 (5...a6 6.Qb1=) 6.e3 (6.Qc2 Re8=) 6...d6 (6...c6!?=+) 7.Qc2+= Bf5 8.Nge2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.Ng3 Increases the pressure on e4 12...Bg6 13.Nge4 Ne4 14.Ne4 d5 15.Qb2 de4?? (better 15...f6 16.Ng3 Bf7+/-) 16.Qg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.e3 c6 4.a4 cb5 (4...d5 5.Ba3=+) 5.ab5= a6 (5...Nf6 6.Bb2=) 6.d3 ed3 7.Bd3 Qb6 (7...Qg5 8.Bf1+=) 8.Nf3+/- Nf6 9.Bb2 Be7 10.0-0 0-0 11.c4 d5 12.cd5 Nd5 13.Bh7! Kh7 14.Qd5 Be6? (better 14...Kg8!?+/-) 15.Qe5+- Do you see the mate threat? 15...f6? (15...Bf6 16.Qe4 Kg8 17.Bf6 gf6 18.ba6 Ra6 19.Ra6 ba6+-) 16.Ng5! fg5 A pinning theme (16...Kg8 17.Qe6 Qe6 18.Ne6 Rc8+-) 17.Qg7 Theme: Double Attack. 1-0. DEFFM – GuestFDNQ, freechess.org, 2020.

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

3.e3 Be7 4.c4 Bf6 (4...Nf6 5.Nc3=+) 5.Nc3= Ne7 (5...Bc3!? 6.dc3 Nf6=) 6.Qc2+= d5 7.cd5 Nd5 (7...Bf5 8.Bb2+=) 8.Qe4+= Be6 9.Nge2 0-0 10.Ba3 (10.Nd4 Nc3 11.dc3 Bd5+=) 10...Re8= 11.Nd4 Nc3 12.dc3 Bd5 13.Qc2 (13.Qg4 a6=) 13...c5 14.bc6 (14.Ne2 Qb6=) 14...Nc6 15.Nc6 Bc6 16.Rd1 Qa5 Attacks the isolani on c3 (16...Qb6 17.Rd2=) 17.Bb4 Qe5 18.Rd4 a5 (18...Rad8 19.Qb2=+) 19.Bd6= Qe6 20.Bc4 Qc8 21.Qb3 (21.Rf4 Qd8 22.Ba3 b5= (worse 22...Bg2 23.Rg1 Bc6 24.Bc5+=)) 21...Bd4=+ 22.Bf7 Kh8 23.cd4 Bg2 24.Be8 Qc1 (24...Bh1 25.Bf7–/+) 25.Ke2 (25.Qd1!? Qd1 26.Kd1 Bh1 27.Bb5=) 25...Bh1 26.Qf7 Qb2 27.Kd3 Qb1 28.Ke2 Qc2 (28...Bd5 29.Qd5 Qc2 30.Ke1 Re8 31.Qa5 Qc1 32.Ke2 Qc4 33.Kd2–/+) 29.Ke1 Qc1 30.Ke2 Qc2 (30...Bd5 31.Qf8 Bg8 32.Be5 Qc2 33.Kf3 Qd1 34.Ke4 Qb1 35.Kf4–/+) 31.Ke1 Qc1 (31...Bd5 32.Qd5 Qb1 33.Ke2 Re8 34.Qa5=+) 32.Ke2= ½–½. onur604 (2320) – letzter_Amateur (1980), lichess.org, 2020.

3.e3 f5 4.Qh5 g6 5.Qd1 Nf6 6.Nh3 Bg7 (6...d5 7.Nc3=) 7.Nc3 d5 (7...a6 8.a4=) 8.Ba3 Be6 (8...a6 9.Be2=) 9.Nf4 (9.Be2 Bh6+=) 9...Qd7 (9...Bf7!?=) 10.Na4 (better 10.Rb1+-) 10...a6?? (better 10...b6+-) 11.Nc5+- Qf7 (11...Qe7 12.Nce6 Qa3 13.Nc7 Kf7 14.Na8+-) 12.Nfe6 b6 (12...ab5 13.Bb4 (worse 13.Bb5 c6 14.Bb2 cb5+-) 13...b6 14.Ng5+- (14.Bb5?! c6 15.Ng5 Qa7+-)) 13.Ng5 (13.Na6 Na6 14.Ng7 Qg7 15.ba6 c6+-) 13...Qg8 (13...Qe7 14.Nce6 Qa3 15.Nc7 (worse 15.Ng7 Kd7+-) 15...Ke7 16.Na8+-) 14.Nce6 h6 (14...Kd7 15.Qb1 Kc8+-) 15.Nc7 (15.Nc7 Kd8 16.Na8 hg5 17.ba6+-) 1–0. Adlai – Ilitzsch, corr, 2018.

3.e3 Qg5 4.Nh3 Qf5 5.Be2 g5 (better 5...Nf6!? 6.0-0 d5+=) 6.Bb2+- f6? (better 6...Nf6 7.0-0 Bg7+-) 7.0-0 h5 (7...Bg7 8.Bh5 Kd8 9.a4+-) 8.f3 c6 (8...Bg7 9.Nc3 Ne7 10.fe4+-) 9.fe4 Qe4 (9...Qg6 10.Nc3+-) 10.Bh5 (better 10.Ng5 Qg6 11.Nh3+-) 10...Kd8 (10...Ke7 11.Nc3 Qh4+-) 11.Ng5! fg5 (11...Qb4 12.Nf7 Kc7+-) 12.Rf8 Kc7 13.Bh8 cb5 1–0. GuestFTBB – GuestCKHH, freechess.org, 2020.

3.e3 Qh4 4.g3 Qf6 5.Nc3 Bb4 (5...Qe6 6.Bb2=) 6.Bb2+= a5 (6...Bc3!? 7.Bc3 Qg6+=) 7.Nd5+/- Qb2 8.Nc7 Kd8 9.Na8 Nf6 10.Nb6 (better 10.c3 Bc5 11.Rb1+-) 10...Ng4?? (better 10...Bd2 11.Kd2 Qb4 12.c3 Qd6 13.Ke1 Qb6+-) 11.c3+- (11.Nc8?! Bd2 12.Kd2 Nf2+-) 11...Bc3 (11...Be7 12.a3+- (12.Qg4?! Qa1 13.Qd1 Qa2+/-)) 12.Rc1 Ke7 (12...d5 13.Rc2 Be6 14.Rb2 Bb2 15.Qa4+-) 13.Rc3 Qb5 (13...f5+-) 14.Bb5 (14.Bb5 Nf2 15.Kf2+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

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

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

3.Bb2 d5 4.e3 c6 5.a4 Nf6 6.c4 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5 5.c4 c6 6.a4).

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

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

4.cd5 Qd5 5.Nc3 Qe5 6.e3 (6.d4 ed3 7.Qd3 Bb4+=) 6...c6 (6...Nf6 7.f4 Qe7 8.Nge2+=) 7.d4 (7.f4 Qe7+/-) 7...Qf5 (7...ed3!? 8.Qd2 Bb4+=) 8.Bc4 cb5 (8...a6!? 9.Qa4 Nf6+/-) 9.Nb5+- Na6 10.Ne2 Bd7 (10...Nf6 11.0-0 Be7 12.d5+-) 11.Ng3 Qg6 12.0-0 Bb5 (12...0-0-0 13.Qb3 Bb5 14.Bb5+-) 13.Bb5 Kd8 14.Qb3 Nc7 15.Bc4 Nh6 (15...Qb6 16.Qc2 Rc8 17.Ne4+-) 16.Qb7 Rc8 (16...f5 17.Rb1 Bd6 18.f3+-) 17.Ne4 (17.Bd2 Nf5 18.Ne4 Qb6+-) 17...f5 (17...Qb6 18.Rb1 Qb7 19.Rb7+-) 18.Nc5 Bc5 (18...Qb6 19.Rb1 Qb7 20.Rb7 a6+-) 19.dc5 Ke7 (19...Qg4 20.e4 Ke7 21.h3+-) 20.Rd1 Ng4 (20...Qh5 21.Ba3 Rhe8 22.c6 Kf6 23.Rd6 Ne6+-) 21.c6 Ne5 22.Ba3 (22.Ba3 Kf6 23.Bb2+-) 1-0. DEFFM – GuestRZRG, freechess.org, 2021.

4.cd5 Qd5 5.Nc3 Qe6 6.e3 (6.Qa4 Nf6 7.b6 Nbd7 8.bc7 Bd6=) 6...Bd7 (6...Nf6 7.d3=) 7.Nge2 Bd6 8.d3 ed3 (8...Nf6 9.Nd4 Qe7 10.de4 Ne4 11.Ne4 Qe4 12.Be2=) 9.Nd4 Qf6 (9...Qe7 10.Bd3 c5 11.Nf5 Bf5 12.Bf5+=) 10.Bd3+= Bb4 (10...Be5 11.Bb2+=) 11.Bb2+/– c6 (11...c5 12.Nde2+/–) 12.0-0 Ne7 13.Qh5 g6? (better is 13...Ng6+/–) 14.Ne4+- gh5 (14...Qd4 15.Qe2 Qb6 16.Bh8 Nd5+-) 15.Nf6 Kd8 16.Nc2 a5 (16...Be6 17.Nb4 cb5 18.Nh5+-) 17.ba6 (17.Nd7 Rg8 18.Nf6 Rg5+-) 17...ba6 (17...Na6 18.Nd7 Kd7 19.Bh8 Rh8 20.Ba6 ba6 21.Nb4+-) 18.Nd7 Rg8 (18...Nd7 19.Bh8 Bd6 20.Rab1+-) 19.Nb6 Ra7 20.Nb4 Rb7 21.Bd4 Nd7 (21...Rg4 22.f4 a5 23.Nc2+-) 22.Nd7 Kd7 (22...Rb4 23.Nc5+-) 23.Na6 Ra7 (23...Ke8+-) 24.Ba7 1–0. Baumann,Heinz (2355) – Linder,Peter (1855), remoteschach.de, 2003.

4.cd5 Qd5 5.Nc3 Qf5 6.Qa4 c6 (6...Nf6!?=+) 7.Qe4 Qe4 8.Ne4 cb5 9.Nc3 b4 10.Nd5 Nc6?? (better is 10...Bd6 11.Bb2 f6+=) 11.Nc7+- Kd8 12.Na8 Nf6 13.Nf3 Ne4 14.Bb2 Bc5 (14...Be6 15.e3+-) 15.e3 (< 15.Bg7 Bf2 16.Kd1 Rg8+-) 15...b6 (15...f6 16.d4 Bd6 17.Bd3+-) 16.d4 (16.Bb5 Bb7 17.Bg7 Re8+-) 16...Bd6 17.d5 Na5 18.Bg7 Rg8 19.Bd4 (19.Be5 Bg4 20.Bd6 Nd6+-) 19...b3 (19...Bb7 20.Bd3 Bd5 21.Nb6 ab6 22.Bb6 Bc7 23.Bc7 Kc7 24.Rg1+-) 20.Bd3 Nf6 (20...Bf5 21.ab3 Rg2 22.Bf6 Nf6 23.Bf5 Ke7+-) 21.Bf6 Ke8 22.Rc1 (better is 22.ab3!? Rg2 23.Bh7 Bb7+-) 22...Bb7 23.Nc7 Kf8 (23...Bc7 24.Rc7 Rg2 25.Bb5 Kf8 26.Rd7 Rg1 27.Rg1 Nc6 28.dc6 Bc6 29.Rd8 Be8 30.Re8) 24.Bh7 (24.Ng5 Rg5 25.Bg5 ba2 26.Bh6 Kg8+-) 24...Rg2 25.Nh4 (25.Kf1 Rg4 26.Bf5 Rg8+-) 25...Rg4 (25...Rh2 26.Rh2 Bh2 27.ab3+-) 26.Nf5 (26.ab3 Nb3 27.Nf5 Bb4 28.Ke2 Nc1 29.Rc1 Bc8+-) 26...Bb4 27.Ke2 ba2 28.Rhg1 (better is 28.Ra1 Nc4+-) 28...Rg1 (28...Nb3 29.Rg4 Ba6 30.Kd1 Be2 31.Ke2 Nc1 32.Kd1 a1Q 33.Rg8) 29.Rg1 Ba6 30.Kf3 (30...Be2 31.Ke2 a1Q 32.Rg8) 1–0. Taulien,Hans_Juergen – Orion,Martin, remoteschach.de, 2002.

4.Bb2 Bb7 5.Qh5 (5.Nc3 Nf6=) 5...d5 6.Nc3 Nf6 7.Qg5 (7.Qh4!?=) 7...h6=+ 8.Qe5 Qe7 (8...Be7 9.Ba3=+) 9.Qg3= Rg8 (9...Qd8 10.Qe5 Be7 11.Ba3=+) 10.0-0-0 (10.Nge2 Qd6+=) 10...Nbd7 (10...Qd7 11.Qe5 Qe7 12.Qf5=) 11.Qc7+= Nc5 12.Qe7 Be7 13.f3 (13.h3 Rc8+=) 13...Rd8 (13...Ne6 14.fe4 de4 15.Nh3+=) 14.Nge2 a6 (14...Ne6!?+=) 15.Nd4+- ab5 (15...ef3 16.gf3 g6 17.Rg1+-) 16.Bb5 Kf8 17.Nf5 Bc8 18.Ne7 Ke7 19.Ba3 (better 19.d4 ed3 20.cd3+-) 19...Nfd7?? (better 19...Bd7+-) 20.Nd5+- Kd6 (20...Ke6 21.fe4 Ne4 22.Nf4 Kf5+-) 21.fe4 f5 (21...Bb7 22.d4 Bd5 23.dc5 Nc5 24.Rd5 Ke7 25.Bc5 bc5 26.Rc5+-) 22.d4 fe4 (22...Ne5 23.Nb6 Kc7 24.Bc5+-) 23.dc5 (23.dc5 bc5 24.Nf4 Ke7 25.Rhf1+-) 1–0. GuestLVKD – Redbulle, freechess.org, 2020.

4.c4 Bb7 5.Bb2 Nf6 6.Nc3 d6 (6...a6 7.Be2=) 7.Be2 (7.f3 Nbd7+=) 7...Be7 8.Nh3 0-0 9.0-0 (9.f3 Nbd7+=) 9...Nbd7 (9...a6 10.a4=) 10.a4 (10.f3 a6+=) 10...h6 (10...Nc5 11.Nf4+=) 11.Nf4+= Ne5 12.d4 (12.Qc2 a6+=) 12...ed3= 13.Bd3 a6 (13...c6 14.Qc2=) 14.Qc2+= Nd3 15.Qd3 Nd7 16.Ncd5 Bf6 17.Nf6 Nf6 18.Bd4 Nd7 (18...Ng4 19.Qc3 Qg5 20.f3+-) 19.Qf5 (19.Qc3 Qg5+=) 19...Re8 20.Nh5 g6 21.Qd7 gh5 (21...Qd7?? 22.Nf6 Kf8 23.Nd7 Ke7 24.Nf6+-) 22.Qd8 Red8 23.a5 ba5 24.Ra5 ab5 25.Rb5 Bc8 26.Rh5 Kh7 27.Rh4 (27.c5 Kg6 28.Rh4 dc5 29.Bc5 Ra5+=) 27...Ra2 (27...Ra4 28.Rc1+=) 28.e4+= Rg8 29.Rc1 White prepares c5 (29.c5 Rg4 30.Rg4 Bg4 31.cd6 cd6+=) 29...Rg4 30.Rg4 Bg4 31.c5 Rd2 (31...Be6!?+=) 32.Bc3+- Rd1 (32...Rd3 33.f3 Bd7 34.Bb4+-) 33.Rd1 Bd1 34.cd6 cd6 35.Bb4 Bb3 0–1. GuestHFSY – GuestJZLT, freechess.org, 2020.

4.Nc3 Bb4 5.Bb2 Qe5 (5...Ne7 6.Nge2+-) 6.Na4 (6.f4!? Qf6 7.Nh3 Ne7+-) 6...Qg5+- 7.Nh3 Qh6 8.Qg4 (8.Rb1 d5 9.Nf4+-) 8...f6?? (better 8...Nf6 9.Bf6 Qf6 10.Qe4 Be7+-) 9.Qe4+- Ne7 (9...Be7+-) 10.Qb4 a6 (10...d6 11.Qc4 Bh3 12.gh3+-) 11.Nf4 (better 11.b6 a5 12.Qc5 d6 13.Qc7 Nbc6+-) 11...a5 (11...ab5 12.Bb5 Nbc6 13.Qb3+-) 12.Qe4 (better 12.Qc5 g5 13.Qc7 gf4 14.Nb6 fe3 15.de3+-) 12...d6 (12...Qg5 13.Qc4 Kd8+-) 13.Nd5 0-0 14.Qe7 c6 15.Bc4 cb5 16.Nf6 (16.Nf6 Kh8 17.Qf8) 1–0. GuestXFHR – GuestMPWC, freechess.org, 2020.

4.Nc3 d5 5.Bb2 Qd6 6.Nge2=.

4.Nc3 Nh6 5.Bb2+- Qe6 (better 5...Bd6!?+-) 6.Nh3+- Be7 7.Nf4 Qd6?? (7...Qe5+-) 8.Ne4 Qb6 (8...Qb4 9.Bg7 Rg8 10.Bd4+-) 9.Nd5 (9.a4!? c6 10.Bg7 d5+-) 9...Qe6 (9...Qg6 10.Nc7 Kd8 11.Na8 b6+-) 10.Nc7 (10.Nc7 Kf8 11.Ne6 de6 12.g4+-) 1–0. GuestPCMQ – GuestXVXB, freechess.org, 2020.

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

4.Ne2 b6 5.Bb2 Be7 6.Ng3 d5 7.c4 Be6 (7...a6 8.cd5 Qd5 9.Nc3+=) 8.cd5+= Qd5 (8...Bd5!? 9.Nc3 c6+=) 9.Qc2 0-0 10.Be2 (10.Nc3 Qd7+=) 10...c5 (10...a6 11.Nc3 Qd7 12.Nge4+=) 11.Nc3+- Will e4 fall? 11...Qd8 12.Nce4 (12.Nge4 Ne4 13.Qe4 Nd7+-) 12...Ne4 (12...Nd5 13.Nc3 Nb4 14.Qe4+=) 13.Ne4+- Nd7 14.0-0 Re8 15.f4 Bf5 (15...Rc8 16.Nc3 Nf6 17.f5+-) 16.Bf3 Rc8 17.g4 Be6 (better 17...Be4!? 18.Be4 h6+-) 18.Qc3+- Bf6 (18...f6 19.Ng5 Ne5 20.Ne6 (20.fe5?! fg5 21.d3 Qd7+-) 20...Nf3 21.Rf3+-) 19.Nf6 Qf6 20.Qc2 White prepares f5 20...Qh4 (20...Qe7 21.f5+-) 21.f5 Nf8 22.fe6 Ne6 23.Qf5 Qg5 (23...Rcd8 24.Bd5 Re7 25.Rac1+-) 24.Bd5 Qf5 25.Rf5 Re7 26.Raf1 Nd8 27.Be5 (27.d3 h6+-) 27...Rd7 (27...g6 28.Bd6 gf5 29.Be7 fg4 30.Rf4+-) 28.e4 Kf8 (28...h6 29.Kf2+-) 29.h4 1–0. Panza (2595) – vladzu (2285), ChessWorld.net, 2012.

3.Ba3 d6 A) 4.Nf3 Nf6 (4...a6 5.e3 Nf6 6.Bb2 ab5 7.Bb5 c6 8.Be2 Nbd7 9.Nc3 g6) 5.Nc3 a6 6.e3 ab5 7.Nb5 e4 8.Nfd4 Nc6 9.Bb2 Ne5; B) 4.e3 a6 (4...Nf6 5.Nf3 a6 6.ba6 Na6 7.Nc3 c6 8.Be2 Nc7 9.Qc1 c5) 5.Nc3 Nf6 6.ba6 Na6 7.Nf3 c6 8.Be2 b5 9.Bb2 Nc7; C) 4.d4 Nf6 (4...a6 5.Nc3 Nf6 6.de5 Qe5 7.Bb2 ab5 8.Nf3 Qc5 9.e3 Bd7; 4...e4 5.Nc3 Nf6 6.Bb4 a6 7.a4 e3 8.fe3 Qe3 9.Qd3 Qd3; 4...ed4 5.Nf3 a6 6.Nd4 ab5 7.Nb5 Nc6 8.N1c3 Nf6 9.e3 g6) 5.Nc3 a6 6.de5 Qe5 7.Bb2 ab5 8.Nf3 Qc5 9.e3 Bd7; D) 4.c4 a6 5.Qa4 Nd7 6.b6 c6 7.Nc3 Ngf6 8.Nf3 Nb6 9.Qb3 Nbd7; E) 4.Bb4 a6 (4...c5 5.Ba3 a6 6.Nc3 ab5 7.Nb5 Nc6 8.Bb2 Nf6 9.Nf3 g6) 5.e3 ab5 6.Nc3 Nf6 7.Nb5 Nc6 8.Bc3 g6 9.Nf3 Bg7; F) 4.Bb2 Nf6 (4...Nd7 5.Nc3 Ngf6 6.Nf3 g6 7.e3 Bg7 8.Bc4 0-0 9.0-0 e4; 4...Be6 5.Nc3 Nf6 6.Nf3 Nbd7 7.e3 d5 8.Be2 Qb4 9.a3 Qb2; 4...a6 5.e3 Nf6 6.Nf3 c6 7.bc6 Nc6 8.Nc3 e4 9.Ng5 d5; 4...Bf5 5.Nc3 Nf6 6.e3 d5 7.Nf3 Nbd7 8.Be2 Qb4 9.Qb1 Be7; 4...Bg4 5.Nc3 Nf6 6.Nf3 Nbd7 7.h3 Be6 8.Ng5 d5 9.e3 h6) 5.Nc3 Be6 6.Nf3 Nbd7 7.e3 0-0-0 8.Be2 h6 9.a4 g5; G) 4.Nc3 Nf6 (4...a6 5.Nd5 Qd8 6.b6 cb6 7.e4 Nf6 8.Nf3 Ne4 9.Bd3 Nf6) 5.e3 a6 6.Qc1 e4 7.ba6 Na6 8.Nge2 c6 9.Nd4 Nc7.

3.a4 d5 A) 4.Nf3 e4 (4...Nf6 5.e3 c5 6.Bb2 e4 7.Ne5 Qe6 8.f4 Nbd7 9.c4 d4; 4...Nd7 5.Nc3 Ngf6 6.Ba3 Qe6 7.Bf8 Kf8 8.e3 Qd6 9.Qc1 Nc5) 5.Nd4 Qe5 6.Bb2 c5 7.bc6 Nc6 8.e3 Bc5 9.Bb5 Bd7; B) 4.e3 Nf6 (4...Nd7 5.Nf3 Ngf6 6.Be2 Qe6 7.Nc3 Bb4 8.0-0 0-0 9.h3 Bc3; 4...c5 5.c4 d4 6.d3 Nf6 7.Nf3 g6 8.ed4 ed4 9.Be2 Bg7; 4...Qe6 5.Nf3 Nf6 6.Be2 Nbd7 7.Nc3 Bb4 8.0-0 0-0 9.Bb2 h6) 5.Be2 a6 6.Ba3 Qe6 7.Nf3 ab5 8.Bb5 Nc6 9.Bf8 Kf8; C) 4.h4 Bg4 (4...Nf6 5.Ba3 Qe6 6.Bf8 Kf8 7.e3 c5 8.Nf3 h6 9.g3 Qe7; 4...Nd7 5.Ba3 Qf6 6.Bf8 Kf8 7.Nc3 Ne7 8.e3 h5 9.Nge2 g6; 4...h6 5.Nc3 Nf6 6.Ba3 Qe6 7.g3 Ba3 8.Bh3 Ng4 9.Bg4 Qg4; 4...Bf5 5.Nc3 Nf6 6.Nf3 d4 7.e4 Be6 8.Nd5 Nd5 9.ed5 Bd5) 5.Nc3 Nf6 6.f3 Be6 7.e3 d4 8.Ba3 Qd8 9.Bf8 Kf8; D) 4.Ba3 Qf6 (4...Qe6 5.Bf8 Kf8 6.Nf3 Nf6 7.e3 c5 8.d3 Nbd7 9.Nc3 d4) 5.Bf8 Kf8 6.Nc3 Ne7 7.e3 Nd7 8.Nf3 g5 9.h3 Kg7; E) 4.a5 Nd7 (4...Nf6 5.Nf3 Nbd7 6.Nc3 d4 7.Na4 Qb4 8.e3 de3 9.fe3 Qg4; 4...Qe6 5.g3 Bc5 6.Nc3 Nd7 7.Bh3 Qf6 8.e3 Ne7 9.Nge2 e4; 4...c5 5.c4 d4 6.d3 f5 7.Nd2 Nf6 8.e4 de3 9.fe3 g6; 4...Qf6 5.e3 Bc5 6.Bb2 Ne7 7.Nf3 Nd7 8.Be2 0-0 9.0-0 d4; 4...d4 5.Nf3 Nf6 6.Na3 Nbd7 7.e3 de3 8.fe3 e4 9.Nd4 Ne5) 5.Nc3 d4 6.Na4 Ngf6 7.Ba3 Qd8 8.Bf8 Nf8 9.e3 de3; F) 4.d3 Bf5 (4...h6 5.Nf3 Nf6 6.Bb2 Nbd7 7.g3 Qe6 8.Bg2 Bd6 9.Nbd2 0-0; 4...Nf6 5.Nf3 Nbd7 6.e3 Qe6 7.Be2 Bd6 8.Nc3 0-0 9.0-0 Nc5; 4...Nd7 5.Ba3 Qe6 6.Bf8 Kf8 7.Nf3 Ngf6 8.Nc3 g6 9.g3 Qe7; 4...Be6 5.Nf3 Nd7 6.Bb2 Qb4 7.Bc3 Qd6 8.Nbd2 Ngf6 9.e3 Qc5 ) 5.h3 Nd7 6.g4 Bg6 7.Bg2 e4 8.Nc3 0-0-0 9.Qd2 Qe5; G) 4.Nc3 d4 (4...Nf6 5.Nf3 d4 6.Na2 a6 7.e3 Bf5 8.Bb2 Nbd7 9.ed4 ed4) 5.Ba3 Qe6 6.Bf8 Kf8 7.Ne4 Nf6 8.Nf6 Qf6 9.e3 Nd7.

3.a4 d6 A) 4.Nf3 Nd7 (4...Nf6 5.Nc3 Nbd7 6.a5 Nc5 7.Bb2 g6 8.d4 ed4 9.Qd4 Be6; 4...e4 5.Nd4 c5 6.bc6 Nc6 7.e3 Qg5 8.h4 Qe5 9.Bb5 Nf6; 4...Be6 5.Nc3 Nd7 6.g3 Ngf6 7.Bg2 d5 8.Ng5 h6 9.Ba3 Qd8) 5.Nc3 Ngf6 6.g3 e4 7.Nd4 Qe5 8.e3 Nc5 9.Bg2 Be7; B) 4.g3 Nf6 (4...Nd7 5.Nc3 Ngf6 6.Nf3 e4 7.Nd4 Qe5 8.e3 Nc5 9.Bg2 Be7; 4...a6 5.Ba3 Nf6 6.Nc3 Nbd7 7.Nf3 ab5 8.ab5 e4 9.Nd4 Qe5; 4...e4 5.Nc3 Nf6 6.Nh3 Nbd7 7.Bg2 d5 8.d3 Qe5 9.d4 Qf5) 5.Nc3 Nbd7 6.Nf3 e4 7.Nd4 Qe5 8.e3 Nc5 9.Bg2 Be7; C) 4.d4 Nf6 (4...Nd7 5.Nc3 Ngf6 6.Nf3 e4 7.Ng5 h6 8.Nh3 g5 9.f3 ef3; 4...ed4 5.Qd4 Nf6 6.Nc3 Bf5 7.Bg5 c5 8.Qd2 Nbd7 9.Nf3 Qe6; 4...a6 5.Nc3 ab5 6.de5 de5 7.Nb5 Nf6 8.Nf3 Bf5 9.Ba3 c5; 4...h6 5.de5 de5 6.Ba3 Qd7 7.Nf3 Qd1 8.Kd1 Ba3 9.Na3 Be6; 4...Bf5 5.Nc3 Nd7 6.Nf3 Ngf6 7.Nh4 Bg4 8.h3 ed4 9.Qd4 Be6) 5.de5 Qe5 6.Ra3 Be6 7.Nf3 Qh5 8.Ng5 Nbd7 9.Ne6 fe6; D) 4.d3 Nf6 (4...Be6 5.Nf3 Nf6 6.Nc3 Nbd7 7.g3 d5 8.e3 0-0-0 9.Bg2 Bg4; 4...Nd7 5.Nc3 Ngf6 6.Nf3 Nc5 7.Be3 g6 8.g3 Bg7 9.Bg2 e4; 4...a6 5.Ba3 Nf6 6.Nc3 g6 7.Nf3 Bg7 8.g3 0-0 9.Bg2 Nbd7; 4...h6 5.Nf3 Nf6 6.Nc3 Nbd7 7.e4 g6 8.Be2 Bg7 9.0-0 Nc5; 4...d5 5.Nf3 Nf6 6.g3 Nbd7 7.Bg2 Qe6 8.0-0 h6 9.Nc3 Bb4) 5.Nc3 Nbd7 6.Nf3 Nc5 7.e4 g6 8.Bg5 c6 9.bc6 bc6; E) 4.Bb2 Nf6 (4...Nd7 5.Nc3 Ngf6 6.e3 g6 7.Nf3 Bg7 8.Bc4 0-0 9.0-0 Nb6; 4...Be6 5.Nc3 Nf6 6.Nf3 Nbd7 7.Ng5 Bf5 8.e4 Bg6 9.Bd3 Nc5; 4...g6 5.d4 Nf6 6.de5 de5 7.Nf3 Nbd7 8.Nbd2 Bh6 9.e3 0-0; 4...Bf5 5.Nc3 Nf6 6.e3 d5 7.Nf3 Nbd7 8.Be2 Qb4 9.Ba3 Qa5; 4...Bg4 5.h3 Be6 6.d4 Nd7 7.Nc3 Ngf6 8.Nf3 e4 9.d5 ef3) 5.Nc3 g6 6.Nf3 Bh6 7.e3 0-0 8.Be2 e4 9.Nd4 c5; F) 4.e3 Nd7 (4...Nf6 5.Nc3 Nbd7 6.Be2 g6 7.Nf3 Bg7 8.0-0 0-0 9.d4 e4; 4...Be6 5.Nc3 Nd7 6.Nf3 g6 7.Ba3 Bg7 8.Bd3 Ngf6 9.Ng5 0-0; 4...h5 5.Nc3 Nf6 6.Nf3 Nbd7 7.Ba3 e4 8.Nd4 Ne5 9.Be2 g6) 5.Nf3 Ngf6 6.Be2 g6 7.Nc3 Bg7 8.0-0 e4 9.Nd4 0-0; G) 4.Nc3 Nd7 (4...Nf6 5.e3 Nbd7 6.Be2 g6 7.Nf3 Bg7 8.0-0 0-0 9.d4 Rd8; 4...Be6 5.g3 Nd7 6.Bg2 Nc5 7.Nf3 e4 8.Nd4 Bc4 9.0-0 Qe5; 4...a6 5.Nf3 Nf6 6.e4 ab5 7.Bb5 Nbd7 8.d4 c6 9.Be2 ed4) 5.Nf3 Ngf6 6.h3 g6 7.d4 e4 8.Nd2 d5 9.Nb3 Qe6.

3.a4 Nf6 A) 4.g3 d5 (4...e4 5.Bb2 d5 6.Nh3 Nbd7 7.Bg2 Ne5 8.0-0 Bg4 9.Bd4 c5; 4...d6 5.Nc3 Nbd7 6.Nf3 e4 7.Nd4 Qe5 8.e3 Nc5 9.Bg2 Be7; 4...Qd8 5.Bb2 Bc5 6.d4 ed4 7.Bd4 Bd4 8.Qd4 0-0 9.Nf3 a6; 4...h5 5.Nc3 d5 6.Bg2 d4 7.Ne4 Ne4 8.Be4 Nd7 9.Nf3 Nc5) 5.Ba3 Qd8 6.Nf3 Ba3 7.Na3 Qd6 8.Bg2 0-0 9.0-0 Bg4; B) 4.Ba3 Qe6 (4...d6 5.Nc3 g6 6.Nf3 Bg7 7.e4 Nbd7 8.Bc4 0-0 9.0-0 Nb6) 5.Bf8 Kf8 6.g3 g6 7.Bh3 Qe7 8.Nc3 Kg7 9.e4 d6; C) 4.e3 d5 (4...Qe6 5.Nf3 d5 6.Nc3 Nbd7 7.Be2 Bb4 8.0-0 0-0 9.Bb2 h6; 4...d6 5.Nc3 Nbd7 6.Nf3 g6 7.Bc4 Bh6 8.0-0 0-0 9.a5 e4; 4...a6 5.Nc3 ab5 6.Bb5 c6 7.Ba3 Qe6 8.Bf8 Kf8 9.Be2 Na6; 4...c5 5.c4 d5 6.Nc3 d4 7.Nd5 Qd6 8.Qb3 Nbd7 9.Nf3 e4; 4...g6 5.Nc3 d6 6.Nf3 Nbd7 7.Bc4 Bh6 8.0-0 0-0 9.Ba3 Nb6) 5.Nf3 c5 6.bc6 Nc6 7.Ba3 Qc7 8.Bf8 Kf8 9.Nc3 a6; D) 4.Nc3 Qe6 (4...d5 5.Ba3 Qd8 6.Bf8 Kf8 7.e3 Qd6 8.Nf3 Nbd7 9.Qc1 Nc5; 4...d6 5.Ba3 g6 6.Nf3 Nbd7 7.g3 Bg7 8.Bg2 0-0 9.0-0 Nc5) 5.Bb2 Bc5 6.Nh3 0-0 7.e4 d5 8.ed5 Nd5 9.Ne4 Nd7.

3.Bb2 d5 A) 4.Ba3 Qe6 (4...Qf6 5.Bf8 Kf8 6.Nc3 Ne7 7.e3 Nd7 8.Nf3 Nc5 9.d4 e4) 5.Bf8 Kf8 6.Nf3 Nf6 7.e3 a6 8.Nc3 d4 9.Na4 ab5; B) 4.Nc3 Nf6 5.e3 Qb4 6.Rb1 Bd6 7.Nf3 Nbd7 8.Be2 0-0 9.0-0 Re8; C) 4.c4 d4 5.e3 c5 6.Ne2 Nf6 7.Na3 h5 8.f3 Be6 9.Qa4 Nbd7; D) 4.e3 Nf6 (4...Nd7 5.Nf3 Ngf6 6.Be2 Qe6 7.c4 Bd6 8.cd5 Nd5 9.Nc3 Nc3; 4...Bf5 5.g4 Be4 6.Nf3 d4 7.Bg2 Qb4 8.Ba3 Qa4 9.Bf8 Kf8) 5.Be2 Bf5 6.Nf3 Nbd7 7.0-0 0-0-0 8.Nc3 Kb8 9.a4 Qb4; E) 4.a4 Bf5 (4...Nd7 5.Nf3 Ngf6 6.e3 Qe6 7.Nc3 Bd6 8.Be2 0-0 9.0-0 h6; 4...Nf6 5.Nf3 Nbd7 6.e3 Qe6 7.Nc3 Bb4 8.Be2 0-0 9.0-0 h6) 5.Nf3 Nd7 6.Nc3 Ngf6 7.e3 d4 8.Ne2 de3 9.fe3 Bg4; F) 4.Nf3 e4 (4...Nd7 5.Nc3 Ngf6 6.e3 Qb4 7.Rb1 Bd6 8.Be2 0-0 9.0-0 Re8) 5.Nd4 c5 6.Nb3 Nf6 7.e3 Be6 8.Be2 Qc7 9.Bf6 gf6.

3.Bb2 d6 A) 4.Nf3 Nf6 (4...Nd7 5.g3 Ngf6 6.Nc3 d5 7.e3 e4 8.Nd4 Ne5 9.a4 Qd8; 4...e4 5.Nd4 c5 6.bc6 Nc6 7.Na3 Nf6 8.e3 d5 9.Nab5 a6) 5.Nc3 Nbd7 6.g3 d5 7.e3 e4 8.Nd4 Ne5 9.a4 Qd8; B) 4.e3 Nd7 (4...g6 5.Na3 Nf6 6.Nc4 Bg7 7.Nf3 0-0 8.Be2 Nbd7 9.0-0 Nb6; 4...Nf6 5.Nc3 Nbd7 6.Be2 g6 7.Nf3 Bg7 8.0-0 0-0 9.d4 Nb6; 4...Be6 5.Nc3 Nd7 6.Be2 Ngf6 7.Nf3 g6 8.Ng5 Bg7 9.h4 Nc5) 5.Nf3 Ngf6 6.Be2 g6 7.0-0 Bg7 8.Nc3 0-0 9.h3 Rd8; C) 4.g3 Nf6 (4...a6 5.Nc3 ab5 6.Nb5 Nf6 7.Nf3 Na6 8.Bg2 Bd7 9.a4 c6; 4...Nd7 5.Nf3 Ngf6 6.Bg2 Nb6 7.0-0 Na4 8.Qc1 a6 9.ba6 Ra6) 5.Nc3 Nbd7 6.Nf3 d5 7.e3 e4 8.Nd4 Ne5 9.a4 Qd8; D) 4.Nc3 Nf6 (4...Nd7 5.Nd5 Qd8 6.e3 Ngf6 7.Nf6 Qf6 8.f4 Qg6 9.Nf3 Be7) 5.Nf3 Nbd7 6.e3 g6 7.Be2 Bg7 8.Ng5 0-0 9.0-0 h6.

3.Bb2 Nf6 A) 4.Nc3 d5 (4...a6 5.Nf3 e4 6.Nh4 d5 7.a4 d4 8.Nb1 g5 9.Bd4 gh4; 4...Qb4 5.a3 Qb2 6.Ra2 Qa2 7.Na2 Ba3 8.Nf3 e4 9.Nd4 0-0; 4...g6 5.Nf3 d5 6.e3 Nbd7 7.a4 d4 8.ed4 ed4 9.Ne2 Bh6; 4...d6 5.Nf3 Nbd7 6.h3 g6 7.e3 Bg7 8.Bc4 0-0 9.0-0 Nb6) 5.Nf3 d4 6.Na4 a6 7.b6 Nc6 8.Rc1 Qd8 9.c3 cb6; B) 4.Nf3 e4 (4...d6 5.Nc3 Nbd7 6.g3 a6 7.ba6 Ra6 8.Bh3 Qd8 9.0-0 Be7) 5.Nd4 Qe5 6.Qc1 d5 7.e3 Bd6 8.Nb3 Qe7 9.Bf6 Qf6; C) 4.a4 d5 (4...d6 5.Nc3 Nbd7 6.Nf3 g6 7.g3 Bh6 8.Bg2 0-0 9.0-0 Rd8; 4...g6 5.Nf3 d6 6.Nc3 Bg7 7.e4 Nbd7 8.Bc4 0-0 9.0-0 Nc5; 4...h5 5.Nc3 d5 6.Nf3 d4 7.Na2 c5 8.e3 Nbd7 9.Be2 h4) 5.Nf3 Nbd7 6.e3 Qe6 7.Nc3 h6 8.Be2 Bd6 9.0-0 0-0; D) 4.c4 a6 (4...d6 5.Nf3 e4 6.Nd4 c5 7.bc6 Nc6 8.Na3 Qd7 9.e3 Be7; 4...e4 5.Nh3 a6 6.Nc3 ab5 7.cb5 d5 8.Qb3 Bh3 9.gh3 Qe6) 5.Qc2 ab5 6.cb5 d5 7.a4 Nbd7 8.Qc7 e4 9.Nh3 Nc5; E) 4.e3 d5 (4...a6 5.Nf3 ab5 6.Be5 Nc6 7.Bf6 Qf6 8.Nc3 b4 9.Nd5 Qd6; 4...g6 5.Nf3 d6 6.Nc3 Nbd7 7.h4 Bg7 8.h5 gh5 9.Be2 0-0; 4...d6 5.Nc3 Nbd7 6.d4 g6 7.Be2 Bg7 8.Nh3 Nb6 9.Ng5 h6) 5.Be2 Nbd7 6.Nf3 Qe6 7.c4 Bd6 8.cd5 Nd5 9.Nc3 Nc3.

3.Nc3= a6 A) 4.e4 ab5 (4...Nf6 5.Nf3 ab5 6.Bb5 c6 7.Be2 Na6 8.0-0 Nc5 9.Bb2 d6) 5.Bb5 c6 6.Bd3 Na6 7.Ba6 Ra6 8.Nf3 Nf6 9.0-0 Qe6; B) 4.Bb2 ab5 5.Nb5 d5 6.Nf3 e4 7.Nfd4 c6 8.Nc3 Qb4 9.Nb3 Nf6; C) 4.Nf3 ab5 (4...e4 5.Nd4 Nf6 6.e3 ab5 7.Ndb5 d5 8.Be2 Be6 9.0-0 Nc6; 4...Nf6 5.e4 ab5 6.Bb5 c6 7.Be2 Na6 8.0-0 Nc5 9.Bb2 d6) 5.Nb5 d6 6.Bb2 Nc6 7.g3 Nf6 8.Bg2 g6 9.0-0 Bh6.

3.Nc3= Qb4 4.Nf3 (4.Rb1 Qa5 (4...Qc5 5.Nf3 Nf6 6.e3 d6 7.Bb2 e4 8.Nd4 Nbd7 9.d3 d5; 4...Qd6 5.Nf3 Nf6 6.e4 Be7 7.Bc4 0-0 8.0-0 a6 9.d3 Bd8; 4...Qe7 5.e4 Nf6 6.Nf3 a6 7.Bc4 ab5 8.Nb5 d6 9.0-0 h6) 5.e3 Nf6 6.Bc4 d6 7.Nf3 Be7 8.Rb3 0-0 9.0-0 c6) 4...Bc5 (4...e4!? 5.Rb1 (5.Ng5 Nf6 6.Rb1 Qe7 7.d3 d5 8.de4 h6 9.Nh3 Bh3) 5...Qe7= 6.Nd4 Nf6 7.e3 c5 8.Nb3 d5 9.Ba3 Qc7; 4...d6 5.Rb1 Qa5 6.e4 Nf6 7.a4 Be6 8.Ba3 d5 9.ed5 Nd5; 4...Qe7 5.Nd5 Qc5 6.e4 Nf6 7.Ba3 Qa3 8.Nc7 Ke7 9.Na8 Qc5; 4...Nf6 5.Ne5 d5 6.Rb1 Qa5 7.b6 Bd6 8.Rb5 Qa6 9.bc7 Be5; 4...Qd6 5.e4 Nf6 6.Bc4 Qc5 7.d3 c6 8.bc6 Nc6 9.0-0 Nd4; 4...Bd6 5.Rb1 Qa5 6.e4 Nf6 7.Bc4 0-0 8.0-0 b6 9.Nh4 Bb4) 5.Rb1 Qf4?? (better is 5...Qg4+= 6.Ne5 Bf2 7.Kf2 Qd4 8.e3 Qe5 9.Qf3 Nf6) 6.d4 (better is 6.Nd5 Bf2 7.Kf2+-) 6...ed4 (6...Qf6 7.Nd5 Qd8 8.dc5 d6+-) 7.Bf4 dc3 8.Bc7 a6 (8...Ne7 9.Bd6 Bd6 10.Qd6+-) 9.Qd5 Nc6 (9...d6 10.Qg5 Ne7 11.Bb8 Rb8 12.Qg7 Rg8 13.Qc3 ab5 14.Rb5 Bd7+-) 10.bc6 bc6 11.Qc5 d6 12.Qc6 Ke7 (12...Bd7 13.Qa8 Ke7 14.Qd5 Be6 15.Bd6 Kd7 16.Ne5 Kd8 17.Qe6 fe6 18.Rb8) 13.Qd6 Ke8 14.Qd8 1–0. pierre – marsil, internet, 2010.

3.Nc3= Nf6 A) 4.Nf3 d5 (4...a6 5.e4 ab5 6.Bb5 c6 7.Be2 Na6 8.a4 Nc5 9.Ba3 d6) 5.a4 d4 6.Na2 c5 7.d3 g6 8.g3 Bg7 9.Bg2 0-0; B) 4.e3 d5 (4...a6 5.Nf3 ab5 6.Bb5 Nc6 7.a4 Qe6 8.0-0 Bb4 9.Ba3 Ba3) 5.Nf3 d4 6.Na4 a6 7.b6 Nc6 8.Be2 de3 9.de3 cb6; C) 4.a4 d5 (4...Qe6 5.Nf3 d5 6.e3 Nbd7 7.Be2 Bb4 8.0-0 0-0 9.Bb2 h6; 4...d6 5.Bb2 Nbd7 6.Nf3 g6 7.g3 Bh6 8.Bg2 0-0 9.0-0 Rd8) 5.g3 d4 6.Ba3 Qd8 7.Bf8 Kf8 8.Na2 Qd5 9.Nf3 e4; D) 4.e4= a6 (4...Qc5 5.a4 Qb6 6.a5 Qe6 7.Nf3 Bc5 8.Bd3 d6 9.Ba3 Nbd7; 4...d6 5.Nf3 Nbd7 6.d4 ed4 7.Qd4 Nc5 8.Bd3 Bg4 9.Be3 Qd7; 4...g6 5.Nf3 a6 6.Bc4 Bg7 7.0-0 0-0 8.Qe2 ab5 9.Nb5 c6) 5.Nf3 ab5 6.Bb5 c6 7.Be2 Na6 8.a4 Nc5 9.Ba3 d6.

3.e3 a6 A) 4.Nc3 Nf6 (4...ab5 5.Bb5 Nf6 6.a4 Nc6 7.Nf3 Qe6 8.0-0 Bb4 9.Ba3 Ba3) 5.a4 ab5 6.Bb5 Nc6 7.Nf3 Qe6 8.Bd3 Bc5 9.Nb5 Bb6; B) 4.a4 ab5 (4...Nf6 5.Nc3 ab5 6.Bb5 Nc6 7.Nf3 Qe6 8.0-0 Bb4 9.Ba3 Ba3; 4...e4 5.Nc3 ab5 6.Bb5 Nf6 7.Nge2 c6 8.Ba3 Qe5 9.Bf8 Kf8; 4...d6 5.Nc3 Nf6 6.Bb2 Nbd7 7.Nf3 Nc5 8.Bc4 Bg4 9.h3 Be6) 5.Bb5 Nc6 6.Nc3 Nf6 7.Nf3 Qe6 8.0-0 Bb4 9.Ba3 Ba3; C) 4.Nh3 ab5 (4...Nf6 5.Nc3 ab5 6.Bb5 c6 7.Bd3 Na6 8.Be2 d5 9.0-0 Nc5; 4...d5 5.Nc3 Nf6 6.a4 Bh3 7.gh3 ab5 8.Nb5 c6 9.Nc3 d4) 5.Bb5 Nf6 6.Nc3 c6 7.Be2 d5 8.0-0 d4 9.Nb1 Bh3; D) 4.Bb2 ab5 5.Nf3 e4 6.Nd4 b4 7.d3 Nf6 8.de4 Qe4 9.Nd2 Qd5; E) 4.Ba3 d6 5.Nc3 Nf6 6.ba6 Na6 7.Nf3 c6 8.Be2 b5 9.Bb2 Nc7; F) 4.Nf3 ab5 (4...e4 5.Nd4 Nf6 6.Nc3 ab5 7.Ndb5 d5 8.Be2 Nc6 9.0-0 Be6; 4...Nf6 5.Bb2 e4 6.Nd4 h5 7.Na3 ab5 8.Nf5 Qc5 9.Nb5 Na6) 5.Bb5 e4 6.Nd4 Nc6 7.0-0 Nd4 8.ed4 Qb4 9.Nc3 Qd4.

3.e3 Qc5 4.d4 ed4 5.ed4 Qb4 (5...Qb6 6.Nf3 Nf6 7.Bd3+-) 6.c3 Qe7 (6...Qa5 7.Bd3 d5 8.Nf3+-) 7.Be2 Nf6 8.Nf3 d6 9.0-0 Be6 (9...Qd8 10.Re1 Be7 11.Bd3+-) 10.Re1 Nbd7 (10...Qd7 11.c4+-) 11.c4 Nb6?? (better 11...d5+-) 12.d5 Bg4 (12...Nbd5 13.cd5 Nd5+-) 13.Bd3 Ne4 (13...Nbd7 14.Re7 Be7+-) 14.Re4 Bf3 (14...Nd7 15.Rg4 Nc5 16.Nc3+-) 15.Qf3 Qe4 16.Qe4 (16.Qe4 Kd8 17.Bg5 f6 18.Nd2+-) 1–0. GuestTRLR – telapongo, freechess.org, 2020.

3.e3 e4 4.c4 (4.Nc3 Nf6+=) 4...Qe5 (4...Nf6 5.Nc3+=) 5.Nc3 d6 (5...Nf6 6.Nge2+-) 6.Bb2 (better 6.d4 ed3 7.Bb2+-) 6...a6? (better 6...Nf6!?+-) 7.Qb3 (better 7.Qc2 Qf6 8.Ne4+-) 7...c6?? (better 7...Qe7 8.Nd5 Qd8+-) 8.Nd5 Qg5 (8...Qb2 9.Qb2 cd5 10.cd5 Nf6 11.ba6 ba6+-) 9.Nc7 Kd7 (9...Kd8 10.Na8 Nd7 11.Nh3+-) 10.Na8 ab5 (10...Nf6 11.Nh3 Qf5 12.Be2+-) 11.cb5 cb5 (11...Ke8 12.Qa4 Qd8 13.Qa7+-) 12.Qf7 Kc6 (12...Ne7 13.Nb6 Kc7 14.Nc8 Kc8 15.Qe8 Kc7 16.Rc1 Nbc6+-) 13.Rc1 (13.Rc1 Qc5 14.Rc5 dc5 15.Qe8 Bd7 16.Qe4 Kd6 17.Qe5 Kc6 18.e4 c4 19.Qd5) 1–0. GuestTMQD – GuestNWCS, freechess.org, 2020.

3.e3 Nf6 A) 4.Nf3 a6 (4...d5 5.Ba3 Qe6 6.Bf8 Kf8 7.Be2 Nbd7 8.Nc3 Qd6 9.0-0 g6; 4...e4 5.Ba3 d6 6.Nd4 a6 7.Be2 ab5 8.Nb5 g6 9.Bb2 Bg7; 4...d6 5.Nc3 Nbd7 6.Bb2 g6 7.h4 Bh6 8.Be2 Nb6 9.0-0 0-0) 5.Bb2 ab5 6.Be5 Nc6 7.Bf6 Qf6 8.Nc3 b4 9.Nd5 Qd6; B) 4.Nc3 d5 (4...a6 5.Nf3 ab5 6.Bb5 e4 7.Nd4 Nc6 8.Nde2 Qe5 9.Bb2 Bd6; 4...d6 5.Nf3 Nbd7 6.Ba3 g6 7.h4 Bh6 8.Ng5 0-0 9.Qf3 Bg7) 5.Nf3 d4 6.Ne2 de3 7.fe3 Bg4 8.h3 Bf3 9.gf3 Nbd7.

3.e4 a6 4.Nf3 Nf6 (4...h6 5.Nc3 Nf6 6.Bb2 ab5 7.Bb5 Nc6 8.0-0 Qb4 9.Rb1 Bd6; 4...g6 5.Nc3 Nf6 6.Bc4 Bg7 7.Qe2 0-0 8.Bb2 ab5 9.Nb5 Na6; 4...ab5 5.Bb5 c6 6.Be2 Na6 7.0-0 Nf6 8.Nc3 Nc5 9.Bb2 d6; 4...h5 5.Nc3 Nf6 6.Bc4 Qc5 7.Qe2 Be7 8.Rb1 0-0 9.0-0 c6; 4...d6 5.d4 f5 6.ef5 Bf5 7.de5 Nf6 8.Be2 de5 9.Ba3 Qd7) 5.Nc3 ab5 6.Bb5 c6 7.Be2 Na6 8.0-0 Nc5 9.Bb2 d6.

3.e4 d6 A) 4.Nf3 Nf6 (4...Nd7 5.Nc3 Ngf6 6.d4 ed4 7.Qd4 Nc5 8.Bd3 Bg4 9.Be3 Qd7; 4...a6 5.Nc3 Nf6 6.a4 g6 7.Bb2 ab5 8.ab5 Ra1 9.Qa1 Nbd7; 4...f5 5.Nc3 Nf6 6.ef5 Bf5 7.Bc4 Nbd7 8.0-0 0-0-0 9.Re1 Nb6; 4...Be6 5.Nc3 Nf6 6.Be2 Nbd7 7.0-0 Nc5 8.Ng5 h6 9.Ne6 Qe6) 5.Nc3 Nbd7 6.Bc4 Nb6 7.Be2 d5 8.Nd5 Nbd5 9.ed5 e4; B) 4.Bc4 Nf6 (4...a6 5.Nc3 ab5 6.Bb5 c6 7.Be2 Nd7 8.Nf3 b5 9.Rb1 Ngf6; 4...Nd7 5.Nf3 Nb6 6.Bb3 Nf6 7.Nc3 g6 8.0-0 Bg7 9.d4 0-0; 4...Be6 5.Be6 Qe6 6.Nc3 Nf6 7.Nf3 Nbd7 8.0-0 Be7 9.Qe2 Nb6 ; 4...h6 5.Nc3 Nf6 6.Nf3 a6 7.d4 ab5 8.Bb5 Bd7 9.Bd7 Nbd7) 5.Nc3 Nbd7 6.Ba3 Nb6 7.Bd3 g6 8.Nf3 Bh6 9.h3 Bd7; C) 4.Nc3 Nf6 (4...Nd7 5.Nf3 Ngf6 6.d4 ed4 7.Qd4 Nc5 8.Bd3 Bg4 9.Be3 Qd7; 4...a6 5.Nf3 Nf6 6.d4 c6 7.bc6 ed4 8.cb7 Bb7 9.Qd4 Ne4) 5.Nf3 Nbd7 6.Bc4 Nb6 7.Bb3 g6 8.0-0 Bg7 9.d4 0-0.

3.e4 Qe6 4.Nf3 (4.Nc3 Nf6 5.Nf3 Bc5 6.Bd3 d6 7.0-0 0-0 8.Bb2 Nbd7 9.Qe2 Qg4) 4...Nf6 (4...Bc5 5.Ba3 Ba3 6.Na3 Nf6 7.Bd3 a6 8.0-0 0-0 9.Qb1 ab5) 5.Nc3 Bc5 6.Be2 0-0 7.0-0 a6 8.d4 ed4 9.Nd4 Qe5.

3.e4 Nf6 4.Nc3 c6 (4...a6 5.Nf3 ab5 6.Bb5 Nc6 7.0-0 Nd4 8.Bd3 Ra5 9.Bb2 c6; 4...Qc5 5.a4 a6 6.Ba3 Qb6 7.a5 Qe6 8.Bf8 Kf8 9.Nf3 h6; 4...d6 5.Nf3 Nbd7 6.Bc4 Nc5 7.Qe2 g6 8.0-0 Bg7 9.d3 Be6; 4...g6 5.Nf3 Bg7 6.Bc4 0-0 7.0-0 a6 8.Qe2 ab5 9.Nb5 c6) 5.a4 d5 6.bc6 de4 7.cb7 Bb7 8.Nh3 Qc7 9.Be2 Bb4.

3.Nf3 d5 A1) 4.e3 Nf6 (4...Bf5 5.Be2 Nd7 6.0-0 0-0-0 7.a4 Ngf6 8.a5 Qe6 9.a6 Bb4) 5.Ba3 Qe6 6.Bf8 Kf8 7.Nc3 Nbd7 8.Be2 Qd6 9.0-0 g6; A2) 4.Ba3 Qe6 5.Bf8 Kf8 6.e3 Nf6 7.Nc3 Qd6 8.Be2 g6 9.0-0 Kg7; A3) 4.h4 e4 (4...Nf6 5.Ba3 Qe6 6.Bf8 Kf8 7.e3 Nbd7 8.Nc3 Qd6 9.Be2 g6; 4...Nd7 5.Ba3 Qf6 6.Bf8 Kf8 7.e3 Qd6 8.Nc3 Ngf6 9.Be2 g6; 4...Bg4 5.Ba3 Qf6 6.Bb2 Nd7 7.Nc3 Ne7 8.Rb1 d4 9.Ne4 Qg6; 4...Bf5 5.Nc3 Nf6 6.a4 c5 7.d3 d4 8.e4 Be6 9.Ne2 Nbd7) 5.Nd4 c5 6.Nb3 Nf6 7.e3 Qc7 8.Nc3 Be6 9.Be2 Nbd7; A4) 4.Bb2 e4 (4...Nd7 5.e3 Ngf6 6.Nc3 Qb4 7.a3 Qa5 8.Be2 Bd6 9.0-0 0-0) 5.Nd4 c5 6.bc6 Nc6 7.c4 dc4 8.Nc6 bc6 9.Bd4 c5; A5) 4.c4 e4 (4...d4 5.Ba3 Qf6 6.e3 Ba3 7.Na3 Nd7 8.Qc2 Qe7 9.c5 de3; 4...Nf6 5.cd5 Nd5 6.Nc3 Nc3 7.dc3 Nd7 8.Be3 Nf6 9.g3 Ng4) 5.Nd4 Qe5 6.e3 c5 7.bc6 Nc6 8.cd5 Nd4 9.Qa4 Bd7.

3.Nf3 Nf6 A) 4.Nc3 d5 5.e3 d4 6.Na4 a6 7.Rb1 Qe6 8.c3 de3 9.fe3 Bd6; B) 4.d4 e4 5.Ne5 d6 6.Nc4 d5 7.Ba3 Qe6 8.Bf8 Kf8 9.Ne3 a6; C) 4.Bb2 e4 (4...d6 5.e3 Nbd7 6.Be2 g6 7.Nc3 Bg7 8.0-0 0-0 9.d4 Nb6) 5.Nd4 Qe5 6.Bc3 d5 7.Nb3 Qd6 8.d3 a6 9.a4 ab5; D) 4.e3 d5 (4...a6 5.Bb2 ab5 6.Be5 Nc6 7.Bf6 Qf6 8.Nc3 b4 9.Nd5 Qd6; 4...e4 5.Nd4 c5 6.Nb3 d6 7.Na3 Nbd7 8.Be2 Qe6 9.0-0 Be7) 5.Ba3 Qe6 6.Bf8 Kf8 7.Be2 Nbd7 8.0-0 g6 9.Nc3 Kg7.

4.Ba3 Qf6 (4...d6 5.Nc3 Nf6 6.Nf3 e4 7.Nd4 c5 8.bc6 bc6 9.e3 c5; 4...Qe6 5.Bf8 Kf8 6.Nc3 d5 7.e4 de4 8.Ne4 Nf6 9.Nf6 Qf6) 5.Bf8 Kf8 6.Nc3 Ne7 7.e4 d6 8.Nf3 g6 9.Bc4 Kg7.

4.Bb2 ab5 5.ab5 Ra1 6.Ba1 Qb4 7.e3 (7.Be5 d6 8.Bc3 Qb5+=) 7...d6= 8.c4 Be6 (8...Bf5 9.Nc3 Nf6 10.Qf3=+) 9.Qc2 (9.Bc3 Qc5 10.Qa4 Nf6+/-) 9...Nf6 10.Bc3 Qc5 11.d4 ed4 12.ed4 Qb6 (12...Qf5!? 13.Bd3 Qg5=) 13.d5+/- Bd7 14.Bd3 Be7 15.Nf3 0-0 16.0-0 Bg4 (16...Re8 17.Bd4 Qa5 18.Nbd2+/-) 17.Bd4+- Qa5 18.Re1 Re8 (18...Bd8+-) 19.Bc3 Qb6 20.Ng5 g6 (20...h6 21.Bh7 Kf8 22.Bf6 gf6 23.Nf7 Qa5+-) 21.Bf6 Bf6 22.Re8 (22.Re8 Kg7 23.Nh7 Kh7 24.Rb8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 ab5 5.ab5 Ra1 6.Ba1 d5 7.Nf3 Nd7 8.e3 Ngf6 9.Be2 Qe6.

4.Bb2 d5 5.Nf3 e4 6.Nd4 Nf6 7.e3 c5 8.Nb3 c4 9.Nd4 ab5.

4.Bb2 d6 5.Nf3 Nf6 6.Nc3 e4 7.Ng5 Nbd7 8.ba6 ba6 9.f3 d5.

4.Bb2 Nf6 5.Nc3 d5 6.Nf3 d4 7.Na2 ab5 8.ab5 c5 9.bc6 Nc6.

4.Nc3 ab5 5.Nb5 d6 6.d4 ed4 7.Nf3 Nf6 8.Nfd4 Nc6 9.e3 Nd4.

4.c4 Qe6 (4...Nf6 5.Nc3 e4 6.Nh3 ab5 7.cb5 d5 8.d4 Bh3 9.gh3 Nbd7; 4...e4 5.Nc3 Nf6 6.e3 d6 7.Nge2 Nbd7 8.Nd4 Nc5 9.Bb2 g6; 4...ab5 5.cb5 Nf6 6.Nc3 d5 7.Nf3 d4 8.Ba3 Qd8 9.Bf8 Kf8; 4...b6 5.Nc3 Nf6 6.Ba3 Qe6 7.Bf8 Kf8 8.e3 Bb7 9.Nf3 g6; 4...d6 5.Nc3 Nf6 6.Nf3 Nbd7 7.a5 e4 8.Nd4 Nc5 9.e3 g6) 5.Nc3 Nf6 6.Nf3 Bc5 7.e3 ab5 8.cb5 e4 9.Nd4 Bd4.

4.e3 Nf6 (4...ab5 5.Bb5 Nf6 6.Ba3 Qe6 7.Nf3 Ba3 8.Na3 Nc6 9.Nc4 d6; 4...Qe6 5.Bb2 ab5 6.ab5 Ra1 7.Ba1 d5 8.g3 Nd7 9.Bh3 f5) 5.Ba3 Qe6 6.Bf8 Kf8 7.Nc3 d5 8.Nf3 d4 9.Ne2 c5.

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.b5 Be7).

4.e3 c6 5.a4 Ne7 6.Nf3 d6 7.d4 e4 8.Nfd2 d5 9.c4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Bd7 (12...Be6!?+=) 13.Qa8+/- Qc7 14.bc6 Bc6 15.cd5 (15.Qa2 Qd8+/-) 15...Nd5 16.Nde4 Nc3 17.Nf6 gf6 18.Bc3 0-0? (better 18...Bg2!? 19.Qa4 Bc6+/-) 19.Qa1 Nd7 20.f3 Qb6 21.Bd3 Bb5 22.Be4 Qa6 (22...Re8 23.Kf2 Qc7 24.Bd2+-) 23.Qb1 Bc6 (23...h6+-) 24.Bh7 Kg7 25.Bd3 Bb5 (25...b5+-) 26.Qb5 (26.Qb5 Qe6 27.e4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 e4 5.d4 ed3= 6.c3 (6.Nc3!? a6 7.Bd3 ab5 8.Bb5=) 6...d5=+ 7.Bd3 Be6 8.Nf3 Nh6 9.Qc2 Nd7 10.Ba3 Ne5 11.Ne5 Be5 12.Bh7?? (better 12.0-0=) 12...g6-+ 13.Bg6 fg6 14.Qg6 Bf7 15.Qd3 Qf6 (better 15...Ng4!? 16.f4 Bg7 17.Nd2 Qh4 18.g3-+) 16.f4 Bd6 (16...Ng4 17.Bb4-+) 17.0-0 Rg8 (17...0-0-0 18.Bd6 Qd6 19.Nd2-+) 18.g3 (18.Bd6!? Qd6 19.Nd2-+) 18...Ng4-+ 19.Bd6 Qd6 20.h3 Nf6 21.g4 Ne4 22.Nd2 Nd2 23.Qd2 Qh6 24.Kg2 0-0-0 25.Rf3 (25.Qd4 Kb8-/+) 25...d4-+ 26.e4 Be6 27.cd4 (27.g5 d3! 28.Rg3-/+ (28.Rd3?? Qh3 29.Rh3 Rd2 30.Kg3 Rd3 31.Kf2 Rh3-+)) 27...Bg4-+ 28.hg4 Rg4 29.Kf2 Qh2?? (29...Rf8 30.Rf1 Rgf4 31.Qf4 Rf4-+ (31...Qf4?! 32.Rf4 Rf4 33.Ke2 Re4 34.Kd3=)) 30.Ke3+= Rg2 31.Qd3 Rd4 32.Kd4 (32.Qd4?? Re2 33.Kd3 Rd2 34.Kc4 Rd4 35.Kd4 Qb2 36.Rc3 Qa1-+) 32...Rd2 33.a4 (33.Raf1!?+=) 33...Rd3= 34.Kd3 Qh8? (34...Qb2!? 35.Rff1 Qb3 36.Kd4 Qb4 37.Ke5 Qd6 38.Kf5 Qf8 39.Kg4 Qg7 40.Kf3 Qc3 41.Ke2 Qc4 42.Ke3 Qc3 43.Kf2 Qc2 44.Ke3 Qc3 45.Ke2 Qc4 46.Ke3 Qc3=) 35.e5 (35.Rff1 Qh3 36.Kd4 Qh8 37.e5 Qf8+=) 35...Qd8 (35...Qh7 36.Kd4+=) 36.Ke4 Qd2 37.Raa3 Qc2 38.Rfd3 Qc4 (38...Qe2!? 39.Re3 Qc4 40.Kf3 Qd5 41.Kf2 Qc4+/-) 39.Rd4+- Qe2 40.Re3 Qc2 (40...Qg4 41.Rd2+-) 41.Kf3 (41.Kf3 Qh7 42.e6 Qh3 43.Ke2 Qg2 44.Kd3 Qf1 45.Ke4 Qh1 46.Ke5 Qh5 47.f5 Qh2 48.Kd5+-) 1-0. DEFFM – shipwrecked, freechess.org, 2021.

4.e4 c6 5.Nf3 cb5 (5...d6 6.Nc3+=) 6.Bb5 Qb6 (6...Nc6 7.0-0 Nge7 8.Bc6 Nc6 9.Nc3+=) 7.Nc3+- a6 (better 7...Ne7!? 8.Ba3 a6+-) 8.Nd5+- Qc5 (8...Qd6 9.Bd3 Ne7 10.Nf6 gf6 11.0-0+-) 9.Ne5 (better 9.Be2 d6 10.a4+-) 9...Be5? (better 9...ab5 10.Qh5 g6 11.Ng6 Bb2 12.Nh8 Bh8 13.Nf6 Bf6 14.Qc5 Na6 15.Qb5 Ba1+-) 10.Be5 ab5 (10...f6 11.Qg4 Kf7 12.Qh5 Kf8+-) 11.Bg7 Ne7 12.Nf6 (worse 12.Bh8 Nd5 13.ed5 Qd5+-) 12...Kd8 13.Bh8 Qe5 (13...Nbc6 14.Nh7 d5 15.Ng5 de4 16.Ne4+-) 14.d4 Qg5 (14...Qd6 15.0-0 Ng6 16.Bg7+-) 15.0-0 Ng6 (15...Ra6 16.e5 Qf5 17.Qd2+-) 16.f4 Nf4 (16...Qh6 17.Ng4 Qf8 18.Bf6 Kc7 19.Rb1+-) 17.Ng4 (better 17.Rf4!? Qf4 18.Nd5 Qg5 19.Bf6 Qf6 20.Nf6 d6+-) 17...d6 (17...Ra6 18.Qf3 Ng6 19.Bf6 Rf6 20.Nf6 Nh4+-) 18.Bf6 (18.Bf6 Qf6 19.Nf6 Ng2 20.Qh5+-) 1–0. DEFFM – GuestSGZG, freechess.org, 2019.

4.e4 d5 5.ed5 Qd5 6.c4 Qc5 (6...Qe4 7.Qe2 Qe2 8.Be2=) 7.Ba3 (7.Nc3 a6=) 7...Qd4=+ 8.Nc3 Ne7 (8...Be6 9.Rc1=+) 9.Nf3 Qf4? (better 9...Qd8!?=) 10.Be7+- Be7 11.Nd5 Qe4 12.Qe2 Qe2 13.Be2 Bd6 14.c5! (14.c5 c6 15.cd6 cd5 16.Ne5+-) 1–0. onur604 (2285) – rakhshan (2015), lichess.org, 2020.

4.e4 Ne7 5.Nf3 Ng6 6.Bc4 0-0 7.0-0 (7.Nc3 c6=) 7...c6 (7...d6=) 8.a4 (8.d4 ed4 9.Bd4 cb5 10.Bb5 Nc6=) 8...d6 (8...d5!? 9.Bd3 Nf4=+) 9.d4 (9.Nc3 Bg4=) 9...Bg4 (9...ed4 10.Bd4 Bg4=) 10.h3 (10.d5=) 10...d5 (better 10...Bf3 11.Qf3 ed4=+) 11.hg4+- (11.de5 Bf3 12.gf3 Be5 13.Be5 Ne5-+ (13...dc4?! 14.Qd8 Rd8 15.Bg3=)) 11...dc4 12.de5 Qd1 (12...Be7!? 13.Qd8 Rd8+- (13...Bd8? 14.Na3+-)) 13.Rd1+- Be7 14.Ba3 (14.Rd4 a6 15.Rc4 Rd8+-) 14...c5 (better 14...Ba3!? 15.Na3 cb5 16.ab5 Rc8+-) 15.Nbd2+- c3 (15...Nd7 16.Nc4 Nb6 17.Ne3 Na4 18.Nd5+-) 16.Nb1 Nf4 (16...Rd8 17.Rd8 Bd8 18.Bc5+-) 17.Nc3 b6 (17...Ne6 18.Nd5 Bd8 19.Nd2+-) 18.Nd5 (18.Nd5 Nd5 19.ed5+- (19.Rd5?! a6+-)) 1–0. Anonymous – Anonymous, lichess.org, 2020.

3.Ba3 Ba3=+ 4.Na3 Qe7 5.Qc1 (5.Nb1 Nf6=+) 5...d5 6.c3 (6.Nf3 Nf6=+) 6...Nf6 (6...a6 7.ba6 Na6 8.e3–/+) 7.g3 (7.Nc2 a6–/+) 7...Be6 (7...a6 8.c4–/+) 8.Nf3=+ Nbd7 9.Ng5 (9.d4 e4 10.Ng5 Bg8=+) 9...0-0 (9...0-0-0 10.Bg2=+) 10.Ne6 (10.Bg2 a6–/+) 10...Qe6 11.Bg2 Rae8 (11...a6 12.Rb1–/+) 12.c4 (12.0-0 c6=+) 12...c6 (12...e4 13.0-0=+) 13.d3 (13.Rb1 a6=+) 13...a6 14.0-0 (14.bc6 bc6 15.0-0 Rb8=+) 14...Rc8 (14...ab5 15.cb5 c5 16.Qg5–/+) 15.Qg5 (15.ba6 ba6 16.Rb1 Rb8=+) 15...cb5–/+ 16.cd5 (16.cb5 Qd6 17.Nb1 ab5 18.Qf5 Rc2–/+) 16...Nd5 (16...Qd6 17.Nb1–/+) 17.Bd5 (17.Rfc1 b6–/+) 17...Qd5-+ 18.Rfc1 Rc1 19.Qc1 f4 20.Qc2 (20.Qc3 Nc5-+) 20...fg3 (better 20...Nc5-+) 21.f3?? (better 21.hg3 Rf2! 22.Kf2 Qd4 23.Kg2 Qa1 24.Qb3 Kf8 25.Nc2-+) 21...Qd4 22.Kf1 (22.Kh1 Qa1 23.Kg2 gh2 24.Qb1 Qb1 25.Nb1-+) 22…Qf2 0–1. Ghost_I_be (1605) – jaddwarrior (1745), ChessWorld.net, 2014.

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.b5 f5).

3.Bb2 Ne7 4.Be5 d6 5.Bb2 Bd7 (5...Be6 6.e3+/–) 6.a4 (better is 6.e3+/–) 6...g6?? (better is 6...Be6+/–) 7.Bh8+- d5 (7...Kf7 8.e3+-) 8.Nf3 d4 (8...Kf7 9.Nc3+-) 9.Bd4 c6 (9...Be6 10.e3+-) 10.c4 1–0. pumpkin (2230) – albertopv, net–chess.com, 2005.

3.Bb2 Qf6 4.e3 d5 5.Nf3 Bd6 6.c4 b6 (6...Nd7 7.cd5 Ne7 8.Nc3+=) 7.cd5 Bb7 8.Bc4 Ne7 9.Qb3 Nd7 10.0-0 (10.Nc3!?+/-) 10...Nc5+= 11.Qc2 (11.Qd1 Bd5 12.Bd5 Nd5 13.Qe2+=) 11...Bd5 (better 11...Nd5!? 12.d4 Nb4=) 12.Bd5+/- Nd5 13.d4 Nd7?? (13...ed4 14.ed4 Nb4+-) 14.Qc6+- Ne7 (14...Ke7 15.Qd5 e4+-) 15.Qa8 Kf7 16.Qh8 Nf8 17.de5 Qe6 18.Ng5 (18.Ng5 Kg6 19.Ne6 Ne6 20.Qe8 Kh6 21.ed6 Nc6 22.Qe6 g6 23.Qf6 Ne5 24.Be5 Kh5 25.g3 g5 26.Qf7 Kg4 27.f3 Kh3 28.Qh7) 1-0. onur604 (2320) - NeverScaredBe (1925), lichess.org, 2020.

3.e3 c6 4.c4 Nf6 5.Nc3 Bb4 6.Bb2 0-0 7.Qb3 c5 8.a3 Ba5 9.Be2 b6 10.Nf3 Bb7 (10...e4!? 11.Ng5 d6=) 11.Ne5+- Bg2 (11...Ne4 12.Rd1+-) 12.Rg1+- Bb7 13.Nd3 g6 (13...a6 14.Nd5 Bd5 15.cd5 ab5 16.Qb5+-) 14.h4+- d5? (14...Ng4 15.h5 Qh4 16.hg6 hg6+-) 15.cd5 Nd5? (15...Bd5 16.Nd5 Qd5 17.Qd5 Nd5+-) 16.Nf4 Bc3 17.Bc3 (17.dc3!? Rf7 18.0-0-0 Nd7 19.Rd5 Bd5 20.Qd5 Nf6 21.Qf5 Qd7+-) 17...Rf7 18.Bc4 Rd7 (18...Nf4 19.Bf7 Kf8+-) 19.h5 Kf8 (19...a6 20.hg6 hg6 21.Ng6 ab5+-) 20.Ne6 (20.Ne6 Ke8 21.Nd8 Kd8 22.hg6 hg6 23.Rg6+-) 1–0. Silent Move (2115) – mfoolb, redhotpawn.com (1), 2014.

3.e3 d6 4.c4 Nf6 5.f3 Be7 6.Bb2 Be6 7.Qc1 Nbd7 8.d4 0-0 9.d5 Bf7 10.Bd3 e4 11.fe4 Ne4 12.Be4 fe4 13.Nc3? (better is 13.Ne2!?+=) 13...Nc5-+ 14.Qc2 Nd3 15.Kd2 Bg6 16.Nge2 Bg5 17.Raf1? (better is 17.Rhf1–/+) 17...Be3! 18.Kd1?! (18.Ke3 Decoy to e3 18...Qg5) 18...Qh4 19.Ng3 Nf2 20.Rf2 Rf2 21.Nce2 Raf8 22.Qc3 Threatening mate: Qxg7 22...Bh6 23.Qd4 b6 (23...b6 24.Rg1 Qh2-+) 0–1. Giraud,Charles – Colussi,Eric, corr FRA Cup9/3T/04, 1999.

3.e3 Nf6 4.Bb2 Bd6 5.Nf3 0-0 (5...e4 6.Nd4 Be5 7.Nc3=) 6.Bc4+- Kh8 7.Ne5 Be5 8.Be5 c6 (8...d5!? 9.Bd3 Nbd7+-) 9.Bd6+- Re8 (9...cb5 10.Bb5 Re8 11.Nc3+-) 10.Nc3 (10.Bf7 Re7 11.bc6 A) 11...Rf7?? 12.c7 Qe8 13.cb8R (13.cb8N?! Qe6 14.Bf4 d6+-) 13...Rb8 14.Bb8+-; B) 11...Nc6 12.Be7 Qe7+-) 10...cb5 (10...Qb6 11.Bf7 cb5 12.Ba3+-) 11.Nb5 Nc6 (11...Ne4 12.f3 a6 13.fe4 ab5 14.Bd5+- (14.Bb5?! Qb6+=)) 12.Bf7 (12.0-0 Re6 13.Be6 de6+-) 12...Re4 (12...Re7 13.Bb3+-) 13.Nc7 (better 13.f3 Re7 14.Bb3+-) 13...Nd4?? (13...Re6 14.Bg3 Re7+-) 14.0-0 b6 (14...Ne6 15.Na8 Rc4 16.Be5+-) 15.d3 (15.ed4 Rd4 16.Nb5 Rh4+-) 15...Rg4 (15...Re6 16.Be6 Ne6 17.Na8+-) 16.f3 (16.f3 Ne6 17.fg4 Nc7 18.Rf5+-) 1–0. GuestNDSG – GuestZXJT, freechess.org, 2020.

4.e3 d5 5.c4 c6 6.bc6 bc6 (6...Nc6 7.cd5 Qd5 8.Nh3+=) 7.cd5 cd5 8.Nh3 Nf6 9.Bb5 Bd7 10.Qa4 (10.Bf6 Qf6 11.Nc3 d4 12.ed4 Qd4+=) 10...Bd6 (10...Bb5!? 11.Qb5 Qd7=) 11.Bf6+= Qf6 12.Nc3 Be5 (12...Bb5 13.Qb5 Nd7 14.Qd5+=) 13.Rc1+/- (13.Nd5?! Qd6 14.Nc3 a6=) 13...Bb5 14.Qb5 (14.Nb5?! 0-0=) 14...Qc6 15.Qd5 Qd5 16.Nd5 Kd7 17.f4 (17.f3 ef3 18.0-0 Nc6+/-) 17...Bf6 (17...Bd6 18.g4! fg4 19.Ng5+/-) 18.0-0 Na6 19.Nf2 Rhc8 20.d3 Nc5 21.de4 Ne4 22.Ne4 fe4 23.Rfd1 Rc1 24.Nf6 Ke6 25.Rc1 gf6 26.Rc7 Rd8 27.Ra7 (27.Rh7?! Rd1 28.Kf2 Rd2 29.Kf1 Ra2+=) 27...Rd1 28.Kf2 Rd2 29.Kf1 h5 30.a4 Ra2 31.a5 (31.Ra6 Kf5+/-) 31...h4 32.a6 Ra1 33.Kf2 Ra2 34.Ke1 Rg2 35.Ra8 Kf5 (35...Rh2?? 36.Re8 Kf5 37.a7 Rh1 38.Ke2 Rh2 39.Kf1+-) 36.a7 Rg7 37.h3 Rg1 38.Kd2 Rg2 39.Kc3 Ra2 40.Kb3 Ra6 41.Kc4 Ra5 42.Kb3 Ra6 43.Kb4 Ra1 44.Kb5 Rb1 45.Kc6 Rc1 46.Kb7 Rb1 47.Kc7 Rc1 48.Kd7 Ra1 49.Ke7 Ra6 50.Kf7 (50.Kd8!?+/-) 50...Ra7= 51.Ra7 ½-½. DEFFM – GuestGCZG, freechess.org, 2021.

4.e3 Qf6?? 5.Bf6+- Ne7 (5...Nf6 6.c4 a6+-) 6.Be7 (better 6.Qh5 Ng6 7.Bb2 d5+-) 6...c6 (6...Be7 7.Nc3 c6 8.Qh5 g6 9.Qh6+-) 7.c4 (7.Bf8 Kf8 8.d3 d5+-) 7...d5 (7...Be7 8.Nc3 a6+-) 8.Bf8 Nd7 9.Bg7 Nf6 10.Bh8 Be6 11.Bf6 Kd7 12.Qh5 Rd8 13.Qh7 Kc8 14.Bd8 (14.Qe7 Rg8 15.Qe6 Kc7 16.Qg8 b6 17.Qf7 Kc8 18.bc6 dc4 19.Qb7) 14...Kb8 15.Qc7 (15.Bc7 Kc8 16.Qe7 b6 17.Qd8 Kb7 18.Qb8) 15...Ka8 16.Be7 Bc8 (16...a6 17.b6 dc4 18.Qd8 Bc8 19.Qc8) 17.Qc8 1-0. BeepBeepImAJeep (2665) - Spyandy (1660), lichess.org, 2017.

4.e3 Nf6 5.Be2 d5 6.c4 Be6 7.Nh3 dc4 8.Qc2 (8.Ng5 Bg8=) 8...Bd6 (8...Nd5 9.0-0= (9.Bc4? Nb4 10.Qc3 Bc4 11.Qc4 Nd3 12.Kf1 Nb2 13.Qe6 Be7-+)) 9.Ng5 (9.Na3 a6 10.Nc4 ab5 11.Nd6 Qd6 12.Bf6 gf6=) 9...Bg8 10.Bc4 (10.Na3 Ba3 11.Ba3 Qd5=) 10...Nbd7 (10...Qe7 11.Bg8 Ng8 12.Ne6 Qe6 13.Bg7=+) 11.Bg8 Rg8 12.Ne6 Qc8 13.Qb3 Ne5 14.0-0 Qd7 (14...Ke7 15.Nd4+=) 15.Bd4 (15.Na3 c6+-) 15...g5 (15...Qf7 16.f4 ef3 17.Nc3=) 16.Nc3 (16.Nc5 Bc5 17.Be5 Rg6=) 16...Rg6= 17.Na4 (better 17.Nc5 Bc5 18.Be5=+ (18.Bc5 f4 19.Rfc1 f3-+)) 17...Nfg4 (better 17...b6 18.Rac1 Nfg4–/+) 18.Nac5+- Qe7 19.h3 b6 (19...Nh6 20.Be5 Be5 21.Rac1+-) 20.hg4 bc5 21.gf5 Rh6? (21...Re6 22.fe6 cd4 23.ed4 Ng6+-) 22.Bc5! g4 (22...Bc5 23.Qd5 Double attack (23.Qd5 Decoy)) 23.Bd6 cd6 24.Nc7 Kd7 (24...Qc7 25.Qg8 Double attack) 25.Rac1?? (25.Na8 Nf3 26.gf3 gf3 27.Qg8 Rg6 28.Qg6 hg6 29.f6 Qe5 30.Nb6 ab6 31.Rfc1 Qg5 32.Kf1 Qg2 33.Ke1 Qg1) 25...Qh4 (25...Nf3 26.gf3 gf3 27.Qe6 Re6 28.Ne6 Rg8 29.Ng7 Rg7 30.Kh2 Qh4) 26.Qe6-+ Re6 27.fe6 (27.Ne6 Ke7 28.Rc7 Kf6-+) 27...Ke7 28.Na8 (28.Nd5 Ke6 29.Nf4 Kd7 30.Rfd1-+) 28...Nf3 29.gf3 gf3 30.Rc7 Ke6 (30...Kf6 31.Rf7 Kg6 32.Rg7 Kg7 33.Rc1 Qg4 34.Kf1 Qg2 35.Ke1 Qg1) 31.Rg7+- Qd8?? (better 31...Kf6 32.Rg3 Qh5+-) 32.Nc7 Kf6 (32...Kf5 33.Rb1 Qh8 34.Rg3+-) 33.Kh2 d5 (33...Kf5 34.Nd5 Qh4 35.Kg1 Qh6 36.Rf7 Ke5+-) 34.Rfg1 Qd6 (34...d4 35.Rh7 de3 36.de3 Qd6 37.Kh1+-) 35.Kh1 Kf5 (35...Qe5 36.Rh7 d4 37.Rh6 Ke7+-) 36.R1g5 Kf6 37.Ne8 Ke6 38.Nd6 Kd6 39.Ra7 (39.Ra7 Kc5 40.Rh7 Kc4 41.b6 d4 42.b7 Kd3 43.b8Q Kc2 44.Qb3 Kd2 45.Rg1 de3 46.Rd7 Ke2 47.Qe3) 1–0. GuestPFRF – GuestPCTP, freechess.org, 2020.

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

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

3.c4 a6 A) 4.ba6 Na6 5.e4 Bc5 6.Nf3 d6=+; B) 4.d4=+ Bb4 5.Bd2 Bd2 6.Qd2 d6=+; C) 4.Qa4 Bc5 5.e4 Ne7 6.Nf3 0-0=+; D) 4.Nc3 ab5 5.Nb5 c6 6.Nc3 d5=+; E) 4.Ba3 Ba3 5.Na3 Ne7 6.e3 0-0=+; F) 4.Nf3 ab5 5.cb5 d5 6.Qc2 Bg4=+; G) 4.e4 ab5 5.cb5 d5 6.ed5 Ne7=+.

3.c4 Bb4 4.Qb3 (4.a3 Ba5= 5.e4 d6 6.Nc3 Nd7=; 4.Nf3 d6 (4...e4 5.Nd4 d5 6.Qc2 Ne7=; 4...a6 5.Qa4 Qe7 6.a3 Bc5=; 4...Ne7 5.Qa4 c5 6.a3 Ba5=) 5.a3 Ba5 6.Qa4 Bb6=; 4.e4 d6 (4...Ne7 5.Qh5 g6 6.Qh6 a6=; 4...a6 5.Nc3 d6 6.Nf3 Ne7=; 4...Bc5 5.Nf3 d6 6.Be2 f5=) 5.Nc3 Ne7 6.a3 Bc3=; 4.e3 Ne7 (4...d6 5.Bb2 Ne7 6.Qa4 c5=; 4...Nh6 5.Bd3 d5 6.Qb3 dc4=; 4...a6 5.Qa4 Qe7 6.Ne2 b6=; 4...f5 5.Bb2 d6 6.a3 Ba5=) 5.Qa4 c5 6.a3 Ba5=; 4.Nc3 Ne7 (4...d6 5.Nd5 Ba5 6.e4 f5=) 5.e4 0-0 6.Rb1 Bc3=) 4...Bc5=+ 5.Bb2 (5.Qg3 g6=+ 6.Ba3 Bd4=; 5.e3 d6 6.Bb2 Bf5=) 5...d6 (5...Ne7 6.e3=+ d5=) 6.e3= Ne7 (6...Qe7 7.Nc3=) 7.d4 Bb6 8.Nf3 (8.Bd3 Ba5 9.Bc3 Bc3 10.Nc3 f5=) 8...Bg4 (8...Bf5 9.Be2=) 9.Bd3 (9.Nbd2 Ba5=) 9...Bf3 10.gf3 Nf5?? (better is 10...ed4 11.ed4 d5=) 11.Bf5+- Nd7 12.0-0 Qe7 13.a4 Ba5 14.Bc3 Bc3 15.Nc3 0-0 16.c5 Kh8 17.Qe6 Qe6 18.Be6 Rad8 19.cd6 cd6 20.a5 ed4 21.ed4 f5 22.Rfe1 Rf6 23.Bd7 Rg6 24.Kh1 h5 25.Bf5 Rf6 26.Be4 Rc8 27.Nd5 Rf4 28.Ne7 (28...Re4 29.fe4+-) 1–0. Haznedaroglu,Kivanc (1990) – Hanamitsu,Itsurou (1810), corr ICCF WSTT/3/06/3, 2006.

3.d4 e4 A) 4.c4 a6 5.Qc2 f5 6.Nc3 ab5=; B) 4.d5 Bc5 5.Nc3 f5 6.e3 Nf6=; C) 4.Nd2 f5 5.c4 Nf6 6.Nh3 e3=; D) 4.e3 f5 5.Nh3 Nf6 6.Be2 a6=.

3.e4 a6 A) 4.Nf3 ab5 5.Bb5 c6 6.Bd3 Bc5=; B) 4.ba6 Na6 5.Bc4 Nb4 6.Nc3 c6=; C) 4.Qh5 g6 5.Qf3 ab5 6.Bb5 Nc6=; D) 4.Nc3 c6 5.bc6 dc6 6.Bc4 Bb4=.

3.e4 Bd6 4.Bc4+= Bc5 5.Bb2 (5.Bg8 Rg8 6.Qh5 Ke7 7.Qh7 d6+=) 5...Qe7 6.Nc3 (6.Qh5 Kd8 7.Qe2 a6+=) 6...Qd6 (6...Bf2!? 7.Kf2 Qc5 8.d4 Qc4=) 7.Qh5 g6 8.Qe2 Ne7 9.Nf3 Ba3 10.Ba3 Qa3 11.0-0 Qb2?? (better 11...d6!?+=) 12.Bb3 (better 12.a3 Qc2 13.Ra2 Qa2 14.Ba2+-) 12...Qa3 13.Qc4 Qd6? (better 13...d5 14.ed5 Kd8+-) 14.Qf7 Kd8 15.Qg7 Rg8 (15...Re8+-) 16.Bg8 (16.Bg8 c6 17.a4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.e4 Ne7 4.Qh5 g6 5.Qf3 Bg7 6.Bc4 a6=.

4.Qd4 a6 5.Qa4 c6 6.Nc3 d5 7.Bf4 Ne7 8.e4 Nd7 9.bc6 bc6 10.Be3=.

4.Qd4 a6 5.e3 ab5 6.Bb5 Nc6 7.Qd2 Bb4 8.c3 Bc5 9.Nf3 Nge7 10.0-0=.

4.Qd4 a6 5.e4 ab5 6.Bb5 Nc6 7.Qd1 Ra5 8.Bc6 dc6 9.Qd8 Kd8 10.Bd2=.

4.Qd4 d5 5.Nc3 Be6 6.e4 c5 7.bc6 Nc6 8.Bb5 Nge7 9.Nf3 a6 10.ed5 +=.

4.Qd4 d5 5.Nd2 f5 6.c4 Nf6 7.Ngf3 Be6 8.Ng5 Bc8 9.Bb2 Be7 10.cd5 +=.

4.Qd4 d5 5.e4 de4 6.Qe4 Qe7 7.Bd3 Qe4 8.Be4 Nd7 9.Nc3 Nc5 10.Nd5=.

4.Qd4 d5 5.e4 Be6 6.ed5 Qd5=.

4.Qd4 Ne7 5.e4 (5.Nf3 d5 6.e4 c5 7.Qd3 Be6 8.Nbd2 a6 9.ed5 Nd5 10.Qe4=) 5...a6 6.Nf3 b6 7.e5 fe5 8.Ne5 Nf5 9.Qg4 Qf6 10.Bb2 +=.

4.e3 e4 5.c4 c6 (5...Be6 6.cd5 Qd5 7.Qc2 c6 8.Ba3 Ba3 9.Na3 Ne7 10.Bc4=) 6.cd5 (6.Nc3 Be6= 7.Qb3 dc4 8.Bc4 Bc4 9.Qc4 f5 10.Qe6=) 6...cd5 7.Qb3 (7.Nd2 Bf5 8.Qb3 Qd7 9.Bb2 a5 10.ba6=) 7...Be6 8.Nc3 f5 (8...Qd6 9.Nge2 f5 10.Nf4+=) 9.a4 (9.Nge2 Bd6= (9...Nf6 10.Nf4= 0.16) 10.Ba3=) 9...Nf6 10.Nh3 (10.Nge2=) 10...Bd6 11.Ba3 0-0 (11...Bc7!?=) 12.Ng5 Bf7 (12...Qe7!+=) 13.Nf7+/– Rf7 14.Nd5 Nd5 15.Bc4 Rc7 16.Bd5 Kh8 17.Rc1 Ba3 18.Rc7 Qc7 19.Qa3 Nd7 20.0-0 h6? (better is 20...Nf6 21.Be6 f4+-) 21.Rc1 (21.Rc1 Qa5 22.Bb7+-) 1–0. Wiese,Uwe (2345) – Noack,Thomas (2090), RSX7E – A00 – Sokolsky–2, 2009.

4.e3 Ne7 5.de5 (5.c4 dc4 6.Bc4 Nf5 7.Qb3 Nd6 8.Bd5 c6 9.bc6 bc6 10.Bf3=) 5...fe5 6.c4 Be6 7.Nf3 Nd7 8.Bb2 dc4 9.Nbd2 Nd5 10.Bc4=.

4.e3 Bf5 5.c4= ed4 6.Qd4 Ne7 7.cd5 Nd5 8.a3 Bd6 9.Nf3 Nb6 10.Be2=.

4.de5 fe5 5.e4 Nf6 6.ed5 Qd5 7.Qd5 Nd5 8.Bd3 Nd7 9.Nf3 Nb4 10.Nbd2=.

4.c3 Qe7 (4...d5 5.d4 ed4 6.cd4 Bb6=) 5.Nf3 f5 6.ef5 d5=.

4.Nc3 d6 (4...a6 5.Nf3 ab5 6.Bb5 c6=) 5.Na4 Nd7 6.Bc4 Nb6=.

4.Bc4 a6 5.Bg8 Rg8 6.Qh5 Ke7=.

4.Bc4 d6 5.c3 Qe7 6.Qb3 Nh6=.

4.Bc4 d6 5.Nf3 Bg4 6.h3 Bh5 7.0-0 Ne7 8.c3 Bf7 (better 8...f5!? 9.d3 fe4 10.de4 a6=) 9.Bf7+/- Kf7 10.d4 Bb6 11.Qb3 d5 (better 11...Ke8!?+/-) 12.de5+- Kg6 (12...c6 13.ef6 gf6 14.Rd1+-) 13.ef6 Kh5?? (13...gf6 14.Rd1 Kg7+-) 14.Ne5 (14.Ne5 de4 15.fe7 Qd6 16.Qf7 Qg6 17.Ng6 e3 18.Nf4 Kg5 19.Ne6 Kh4 20.Qf4 Kh5 21.Qg5) 1-0. DEFFM – GuestYYRK, freechess.org, 2021.

4.Bc4 Qe7 5.d3 a6 6.ba6 Na6=.

4.Bc4 Ne7 5.Nc3 a6 6.Qh5 g6=.

4.Ne2 d6 (4...Ne7 5.d4 Bb6 6.a4 a6=; 4...d5 5.d4 ed4 6.Nd4 Ne7=; 4...f5 5.Ng3 Nf6 6.Nf5 0-0=) 5.c3 Bb6 6.d4 Ne7=.

4.Nc3 d5 (4...a6 5.bc6 dc6 6.Bc4 Nh6=; 4...Bb4 5.Bc4 Bc3 6.dc3 Ne7=) 5.bc6 bc6 6.ed5 cd5=.

4.d4 Qa5 5.Bd2 Qa4 6.Be3=.

4.d4 Qc7 5.Bb2 ed4 6.Bd4 cb5=.

4.d4 ed4 5.Qd4 cb5 6.Bb5 Qa5=.

4.d4 d6 5.Nf3 a6 (5...f5 6.ef5 e4 7.Ng5 Bf5 8.bc6 bc6 9.g4=) 6.bc6 bc6 7.Bb2 Nd7 8.Bc4 Bb7 (8...Rb8 9.Bc3=) 9.de5 de5 10.Nh4 (10.Nc3 Nb6 11.Bd3 Bb4+=) 10...Nb6 (10...Ne7 11.0-0=) 11.Qh5+= g6 12.Ng6 (12.Ng6 hg6 13.Qh8 Nc4 14.Qg8 Nb2 15.Qg6 Ke7 16.Nd2+=) 1-0. onur604 (2320) - Nazar1005 (2085), lichess.org, 2020.

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

4.ed5 Qd5 5.Nc3 Qd6 6.Bc4 Be6 7.Qf3 c6 8.bc6 Nc6 9.Nb5 Qe7?? 10.Be6+- a6 (10...Nh6 11.Ba3 Qd8 12.Bf8 Kf8 13.Ne2+-) 11.Ba3 ab5 (11...Qd8 12.Bg8 ab5 13.Bf8 Kf8+-) 12.Be7 Be7 (12...Nge7 13.Ne2+-) 13.Ne2 (13.Qd3 Kf8+-) 13...Nh6 14.Qd5 b4 (14...Rb8 15.Qb5 Nf7 16.Bf7 Kf7 17.Qb3 Kf8 18.f4+-) 15.Qd7 Kf8 16.Qb7 (16.Qb7 Ra7 17.Qc6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.ed5 Qd5 5.Nc3 Qd6 6.Bd3 Nd7 7.Qh5 Kd8 8.Nge2 Nh6 9.0-0 Nc5 10.Ba3 b6 (better 10...Bg4!? 11.Qh4 Qe6=) 11.Bc5+/- bc5 12.Ne4 Qb6 13.N2c3 Be6? (better 13...c6+/-) 14.Nf6!+- gf6 (14...Nf7 15.Nh7 Be7 16.Be4+-) 15.Qf3 Rb8 (15...Bg7 16.Qa8 Kd7+-) 16.Qf6 Ke8 17.Qh8 Qd6 (17...Nf7 18.Qh7 Rd8 19.Rae1+-) 18.Ne4 Qe7 (18...Qb6 19.Ng5 Nf7 20.Nf7 Kf7 21.Qh7 Ke8 22.Be4+-) 19.Nf6 Kd8 20.Nh7 Qg7 (20...Kd7 21.Nf8 Qf8 22.Qe5 Ng4+-) 21.Qf8 (21.Qf8 Qf8 22.Nf8+-) 1-0. DEFFM – GuestBRFQ, freechess.org, 2020.

4.ed5 Qd5 5.Nc3 Qf7 6.Be2 Nh6 (6...a6 7.Rb1=) 7.Bh5 g6 8.Bf3 c6 9.bc6 (9.Rb1 Be6=) 9...Nc6 10.Bd5 Qd7 (10...Be6 11.Be6 Qe6 12.Rb1=) 11.Qf3 (11.Rb1 Bc5=) 11...Nf5 (11...Nd4 A) 12.Qf6 Bg7 (12...Nc2?! 13.Kd1 Bg7 14.Ne4 Qd5 15.Qg7=+) 13.Ne4 Qd5 (13...Bf6?! 14.Nf6 Ke7 15.Nd7 Nc2 16.Kf1=; 13...Nc2 14.Kd1 Qd5 15.Qg7=+) 14.Nd6 Kd7 15.Qg7 Kd6 16.Qh8 Nc2 17.Kf1 Qc4 (< 17...Na1 18.Qf8 Kc6 19.Qh6=+) 18.Ne2 Qe2 (< 18...Na1 19.Qf8 Kc6 20.Qh6=+) 19.Ke2 Bg4 20.f3 Rh8–/+; B) 12.Qd3=) 12.Ne4=+ Be7 13.Bb3 (13.Ne2!?=+) 13...Ncd4–/+ 14.Qd3 Qc6 15.Nf3 (15.f3 Be6 (< 15...Nb3 16.ab3 Nd4 17.Kd1–/+) 16.Nc3 Bb3 17.cb3 Rd8-+) 15...Be6 (better is 15...Nf3 16.gf3 Nd4–/+) 16.Be6? (16.Nd4 Nd4 (< 16...ed4 17.0-0+=) 17.0-0 Rd8 18.Be6 Nc2-+ (18...Qe6?! 19.c3 Nc6 20.Qb1=+)) 16...Ne6 (16...Nc2 17.Ke2 Rd8 18.Qc4 Qc4 19.Bc4 Na1 20.g4 Nd4 21.Nd4 Rd4 22.d3-+) 17.0-0?? (better is 17.Rb1–/+) 17...Rd8-+ 18.Qb3 (18.Nf6 Bf6 19.Qa3 Nf4-+ (< 19...Qc2 20.Bb2-+)) 18...Nfd4 (18...Qe4?! 19.Qe6 Qc2 20.Ba3–/+) 19.Nd4 Nd4 (20.Qb2 Qe4-+; 19...ed4?! 20.Re1 f5 21.Ng3=; 19...Rd4?! 20.f3–/+) 0–1. Langguth,Wilhelm – Richter,R, corr ICCF Cup8/9 V184, 1990.

4.ed5 Qd5 5.Nc3 Qf7 6.Nf3 Bb4 (6...Be6 7.d4+=) 7.Bb2 (7.Bd3 Nd7 8.Ne4 Nc5=) 7...Ne7= 8.Bd3 (8.d4 e4 9.Nd2 f5=) 8...0-0 (8...Nd7 9.Ne4=) 9.Ne4 (9.Qe2 Bf5 10.Bc4=) 9...Kh8 (9...Nd7 10.0-0=) 10.0-0 (better 10.c3 Bd6 11.0-0=) 10...Bg4? (better 10...Nd5+=) 11.Ne5+- Bd1 12.Nf7 Rf7 13.Rfd1 (better 13.Rad1 Nd7 14.a3+-) 13...Ba5? (13...Nd7+-) 14.Bc4 (14.Nc5 a6 15.a4 b6+-) 14...Rf8 15.Ba3 (15.Nc5 a6 16.a4 Bb4 17.Nb7 Ra7+-) 15...Re8 (15...Nd7 16.Nc5 Nc5 17.Bc5+-) 16.Nc5 (better 16.Bf7 Nd7 17.Be8 Re8 18.Re1+-) 16...c6 (16...a6 17.ba6 Na6 18.Na6 ba6+-) 17.Nb7 cb5 (17...Bc7 18.Bf7 Rf8 19.Bb3+- (19.Be7?! Rf7 20.Re1 Be5+-)) 18.Bb5 Nbc6 19.Be7 Ne7 (19...Re7 20.Bc6 Bb6 21.c4+-) 20.Be8 Re8 (20...Bb6 21.Re1 Re8 22.Nd6+-) 21.Na5 (21.Na5 Nf5 22.d4+-) 1–0. GuestMTYT – GuestYJKG, freechess.org, 2020.

4.ed5 Ne7 5.c4 Nf5 6.Bd3 a6=.

3.Ba3 e4 4.d4 ed3! 5.Bf8 (5.cd3 Ba3; 5.Qd3 Qa1; 5.ed3 Qa1) 5...Qa1 (5...Kf8?! 6.c3=+) 6.Ba3 (6.Bb4 Qa2 7.cd3 Nf6-+) 6...de2 7.Be2 (7.Ne2 Qa2 8.Nec3 Qe6 9.Be2-+) 7...b6?? (better is 7...Qa2 8.Bc5 Nf6-+) 8.Bf3–/+ Qe5 9.Qe2 Qe2–/+ 10.Ne2 c6 11.Bb2 f6-+ 12.Bh5 g6 13.Bf3 Bb7 14.a4 a6 15.c4 h5 16.h4 Rh7 17.Bd4 ab5 18.cb5 Ra4 19.Bb6 Rb4 20.Nec3 Re7 21.Kf1 d6 0–1. mprior – bgray, net–chess.com, 2003.

3.c3 Bc5 4.Nh3 (4.e3 d5=) 4...Ne7 (4...d5 5.e3–/+) 5.e3 (5.d4 ed4 6.Bg5 Qd6=+) 5...Nf5 (5...d5 6.d4 Bd6 7.Ng1=+) 6.Ba3 (6.Qf3 d6=) 6...d6 (6...Ba3 7.Na3 d5 8.d4=+) 7.Bc5 dc5 8.Bc4 (8.Ng1 Nd7=+) 8...Nh4 (better is 8...Nd6 9.d3 Bh3 10.gh3 Nd7–/+) 9.Qa4?? (better is 9.Bd5–/+) 9...Ng2-+ 10.Kd1 Bg4 11.Kc1 0-0 12.Kb2?? Bh3-+ 13.Rg1 Rd8 14.Na3 Rd2 15.Kb3 Rf2 16.Rgd1 h6 17.Rd5 Ne3 18.Rc5 Rb2 19.Kb2 Qf2 20.Kb3 Nc4 21.Rc4 Be6 22.Rd1 Qe2 23.Rd8 Kh7 24.Qb4 Qd1 25.Nc2 a5 26.Qa4?? Bc4 27.Qc4 Qb1 28.Ka3 Qc2 29.Qd3 Qd3 30.Rd3 c6 31.bc6 bc6 32.h4 c5 33.Rd6 Na6 34.h5 Nc7 35.Rc6 (35...Ne6 36.Rd6-+; 35.Rd7 Nb5 36.Kb2 Rb8-+). blacksteelballs – Mteinert, Live Game Caissa's Web, 2005.

3.c3 d5 4.d4 =+.

3.Nc3 a6 4.Nd5 Qf5?? (better is 4...Qd8 5.e4 Nf6 6.Nf6 Qf6=) 5.Nc7+- (5...Kd8 6.Na8+-) 1–0. Taulien,Hans_Juergen – Buresch,Rene, remoteschach.de, 2002.

3.Nc3 Bc5 4.e3 (4.Ne4 A) 4...Qe7 5.Nc5 (5.e3 Bb6 6.Bc4 d6 7.Nf3 Nf6 8.Nf6 Qf6) 5...Qc5 6.e3 d6 7.d4 ed4 8.Qd4 Qd4; B) 4...Qb6 5.Nc5 Qc5 6.e3 Nf6 7.Nf3 e4 8.Nd4 d6) 4...c6 (4...Qe6 5.Nf3= Nf6 (5...Ne7 6.d4 ed4 7.Nd4 Qg6 8.Bb2 d6; 5...Bb4 6.Bb2 Nf6 7.a3 Ba5 8.Be2 d5) 6.Ne5 Qe5 7.d4 Bd4 8.Qd4 d6; 4...Qd8 A) 5.Qg4 g6 6.Bc4 d6 7.Qf3 f5 8.Nge2 Nd7; B) 5.a3 Nf6 (5...d5 6.Qh5 Qd6 7.f4 ef4 8.d4 Bb6) 6.d4 ed4 7.ed4 Be7 8.Bd3 0-0; C) 5.Bb2 Nf6 6.Na4 Bd6 7.Nf3 e4 8.Ng5 Be7; D) 5.Ne4 Be7 (5...Bf8 6.Bb2 d5 7.Ng3 Nd7 8.Nf3 e4) 6.Bb2 d5 7.Ng3 f6 8.f4 ef4; E) 5.Nf3 d6 6.a3 Ne7 7.Be2 0-0 8.d4 ed4) 5.Ne4+= Qe7 6.Qg4 (6.Nc5 Qc5 7.d4 ed4 8.Qd4 Qd4) 6...f6?? (better is 6...g6 7.Nc5 Qc5+= 8.Qa4 a6) 7.Nc5+- cb5 (7...f5 8.Qb4+-) 8.Ne4 (8.Ba3 Nh6 9.Qh5 Nf7 10.Bb5 Nc6+-) 8...Nh6 9.Qh5 Nf7 (9...Kd8 10.Bb5 d5 11.Nc3+-) 10.Bb5 g6 (10...Na6 11.Ba6 ba6 12.Nc3+-) 11.Qh4 Ng5 (11...f5 12.Qe7 Ke7 13.Nc3+-) 12.Ba3! Qe6 (12...Qa3 13.Nf6) 13.Nd6 Kd8 14.Bc4 Qf5 (14...Qe7 15.Bd5 Nc6+-) 15.Nf5 (15...gf5 16.Qh6+-) 1–0. wiking – Jorgecas, queenalice.com, 2009.

3.Nc3 c6 4.e4 Bc5 5.Nf3 d6 6.Na4 Bb4 7.c3 Ba5 8.Nb2 a6 9.ba6 ba6 10.Nc4 Bd8 11.Ba3 c5 12.d4 ed4 13.cd4 Qf4 14.Be2 (14.dc5?! Qe4 15.Be2 Bc7 16.cd6 Bd8+-) 14...Be7 15.dc5 (15.Nb6 Bb7 16.Na8 Ba8+-) 15...dc5 16.Bb2 (16.Nb6 Qf6 17.Na8 Qc3 18.Nd2 Qa3 19.Nc7 Kf8+-) 16...Bf6? (better is 16...Qh6+/–) 17.Nd6+- Kf8 (17...Kd7 18.Bf6 Nf6 19.Nf7 Ke8 20.Nh8 Qe4+-) 18.g3 (better is 18.Nc8!? Qe4 19.Rb1 Qb4 20.Kf1 Qf4+-) 18...Qg4 19.Bf6 (19.Qd5 Qe6 20.Qa8 Qd6 21.Bf6 Nf6 22.e5+-) 19...gf6?? (19...Nf6 20.Nf7! Rg8 21.Qd6 Ke8+-) 20.Ne5! Qg7?? (20...fe5 21.Bg4) 21.Nc8 (better is 21.Nf5 Nc6 22.Nd7 Bd7 23.Qd6 Nge7 24.Ng7 Kg7 25.Qd7 f5 26.ef5 Rhd8+-) 21...fe5 (21...Qg5 22.f4 Qh6+-) 22.Qd8 1–0. Taulien,Hans_Juergen – Grimm,Manfred, remoteschach.de, 2002.

3.Nc3 e4 4.e3 d5 (4...Qf5 5.Nge2 d5 6.Ng3=) 5.Bb2 (5.Nd5 Qa1 6.Nc7 Kd8 7.Na8 Qa2 8.d3 Bb4 9.Ke2=) 5...d4 (better is 5...Qg5=) 6.Ne4+/– Qf5 (better is 6...Qg6!? 7.Qf3 Bg4+-) 7.Bd3+- de3? (7...Qd5+-) 8.Nd6!! Bd6 (8...cd6 9.Bf5; 8...Bd6 9.Bf5) 9.Bf5 Nf6 (9...ef2 10.Kf2 Bc5 11.d4 Bf5 12.Qf3+-) 10.Bc8 Ng4 11.Qg4 (11...a5 12.Bb7+-) 1–0. ygfr – nwyf, internet, 2009.

3.Nc3 Qe6 4.Nf3 (4.e4 Nf6 5.Qf3 Bc5 6.Be2 d6 7.Na4 Bb4 8.c3 Ba5 9.Nb2 a6 10.Nh3=+) 4...Nf6 5.e4 Bb4 6.Ng5 Qe7 7.Bb2 h6 8.Nf3 d6 9.Bd3 a6 10.a4 =+.

3.e3 d5 4.Bb2 =+.

3.e3 Nh6 4.Be2 (4.Nc3 c6=) 4...b6 (4...Qg6!?=+) 5.Bb2+= Bb7 6.Bf3 (6.Nf3 d6+=) 6...Bf3 (6...c6 7.d4=) 7.Nf3 (7.Qf3 Qf3 8.Nf3 f6+=) 7...Bd6 8.Nc3 (better is 8.e4+=) 8...c6 (better is 8...a6!?=) 9.Ne4+/– Qe7 10.bc6 (better is 10.Nd6!? Qd6 11.Be5+/–) 10...Nc6= 11.Nd6 (11.Qe2 f5 12.Nd6 Qd6=) 11...Qd6 12.Ng5 (12.0-0 0-0=) 12...Qf6 (12...Qg6 13.Nf3=+) 13.h4 (13.f4 Qg6=) 13...Qe7 (13...Qg6 14.Rh2=+) 14.Rh3 (14.f4 f6 15.Qh5 Kd8=) 14...f6=+ 15.Ne4 Qb4 (better is 15...d5 16.Nc3 Rd8=+) 16.Nf6? (better is 16.Nc3=) 16...gf6-+ 17.Bc3 Qd6 18.Qh5 Kd8?? 19.Qh6+/– Kc7 20.Rg3 Qe7 21.e4 Rag8 22.Rd3 Rg2= 23.0-0-0 Rhg8 24.Bb2 Rg1 25.Ba3 Nb4?? 26.Rc3+= Kb7 27.Rg3?? Na2 28.Kb2+- Nb4 29.Rdg1 Qc5 30.Bb4 Qb4 31.Ka2 Rc8 32.Rb1 Qa4 33.Ra3+- Rc2 34.Rb2 Qc4 35.Rab3 Qa4 36.Ra3?? Qc4= 37.Rab3 Rb2?? 38.Kb2+- a5? 39.Qg7 Ka6?? 40.Qd7+- a4 41.Rc3 Qb4 42.Kc2 a3 43.Qc8 Kb5 44.Qc6 Ka6 45.Qa8 Kb5 46.Rb3 Qb3 47.Kb3 (47...a2 48.Qd5 Ka6 49.Kb4+-) 1–0. manofsteel5 – alfonso, Live Game Caissa's Web, 2005.

3.f3 d5 4.e3 =+.

3.f3 Nh6 4.g3 (4.Nc3 Nf5 5.Nh3 Ne7=+) 4...Bc5 5.Ba3 Bd4 6.c3 Bc5?? (better is 6...Bb6–/+) 7.Bc5+- Qf5 8.g4 Qf4 9.Nh3 Qc4 10.d4 Qb5 11.Na3 Qb2 12.de5?? Qc3-+ 13.Kf2? Qc5 14.e3 Qa3 15.Ng5 Qb2 16.Kg3 Qe5 17.Kf2 Qg5 18.h3 Nc6 19.h4 Qc5 20.Rc1 Qa3 (21.Bc4 Qe7-+; 20...Qe5 21.Qc2-+) 0–1. Francis – Hansen, internet, 2008.

3.g3 Bc5=+ 4.Bb2?? (better is 4.e3=+) 4...Qf2# 0–1. Baesecke,Bjoern – Koziol,Florian, Bezirk2–ch U14, 2001.

3.Bb2 (--> 1.b4 e5 2.Bb2 Qf6 3.b5).

3.Bb2 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 Qf6).

3.Bb2 d6 4.Nf3 (--> 1.b4 e5 2.Bb2 Qf6 3.Nf3 d6 4.b5).

4.Nd5 Qd6 5.Nb4 Qb4 6.a4 Nf6=.

4.Nd5 Qd6 5.Nb4 Qb4 6.e3 Nf6 7.Nf3 (7.a3 Qe7 8.Bb2 d6 9.d4 0-0 10.de5=) 7...d6 8.c3 (8.a3 Qa5= (8...Qa4 9.Rb1 Bf5 10.d3=) 9.Be2 a6 10.Rb1=) 8...Qa5=+ 9.a4 (9.Bc4 0-0 10.Qb3=) 9...0-0 (9...c5 10.bc6 Nc6 11.Ba3=+; 9...e4 10.Nd4=) 10.Qc2 (10.Ba3 c5 11.bc6 Nc6 12.Bd6 Rd8=) 10...e4 (10...c5 11.e4=) 11.Ng5 a6 (better is 11...Re8!?=+) 12.Ne4+/– Ne4 13.Qe4 ab5 14.Bb5 (14.Bd3 f5 15.Qd5 Kh8 16.Qb5 Nd7+/–) 14...c6 (14...Nd7 15.Qb4+/–) 15.Bd3+/– f5 16.Qd4 (16.Qf4 Rf6+/–) 16...d5 (16...Qc7 17.Qf4+/–) 17.Ba3 (17.c4 Be6+/–) 17...Rf7 (17...Qa4 18.c4 Qa7 19.Qf4+/–) 18.0-0 Qa4?? (better is 18...Nd7+/–) 19.Qe5+- Nd7 20.Qe8 Nf8 21.Bf8 Rf8 22.Ra4 Re8 (22...Ra4 23.Qe5+-) 23.Ra8 b5 (23...Kf7+-) 24.Bf5! (24...Bf5 25.Re8 Kf7 26.Rb8+-) 1–0. marekt – pma92, internet, 2008.

4.Nd5 Qd6 5.Nb4 Qb4 6.Nf3 Qb5=+ 7.e3 e4?? (better is 7...Qa5–/+) 8.Bb5+- (8...ef3 9.Qf3+-) 1–0. dwtu – oxbh, internet, 2009.

4.Nd5 Qd6 5.e4 Ne7= (5...Nf6 6.Nf6 Qf6 7.c3 Bc5 8.Nf3 Qe6 9.Qb3 Qg6 10.Qd5=) 6.Nb4 Qb4 7.c4 d6 8.a3 Qa5 9.Bb2 Nd7 10.Bc3=.

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

3.a4 (--> 1.b4 Nf6 2.a4 e5 3.b5).

3.b6 ab6 4.Bb2 –/+.

3.b6 cb6 4.Nf3 (4.e4 Ne4 5.Qe2 d5–/+) 4...Nc6 5.c3 (5.e3 d5–/+) 5...Bc5 (5...d5 6.e3-+) 6.Qb3 (6.d4 ed4 7.cd4 Bb4 8.Bd2 Be7–/+) 6...h6 (6...0-0 7.Ne5 Ne5 8.d4-+) 7.c4 (7.Ne5 Ne5 8.d4 Bd6–/+) 7...d6 (7...e4 8.d4 Nd4 9.Nd4 Bd4 10.Bb2 Bb2 11.Qb2-+) 8.Nc3 (8.d3 d5-+) 8...Na5 (8...e4 9.Ng1-+) 9.Qa4 (9.Qc2 Be6–/+) 9...Bd7-+ 10.Nb5? (better is 10.Qc2-+) 10...a6 11.e3 ab5 12.cb5 Nc6 13.Qb3 Be6 14.Qc2 Nb4 15.Qb2 Ra2 16.Qb1 Qa8 17.Ra2 Qa2 18.Qa2 Na2 19.Bb2 Ke7 20.d4 Bb4 21.Ke2 Bc4 22.Kd1 Bf1 23.Rf1 Bc3 24.Ba3 Ra8 25.de5 Ra3 26.ef6 Bf6 27.Ke2 Nc3 28.Kd3 Nb5 29.Kc4 Ra5 30.Rb1 d5 31.Kd3 Ra3 32.Kd2 Ra2 33.Kc1 Ra1 34.Ra1 Ba1 35.g4 f6 36.Kc2 Kd6 37.h4 Nc7 38.g5 b5 39.Kb1 Be5 40.gh6 gh6 41.h5 Ne6 42.Nd2 Ng7 43.f4 Bc3 44.Nb3 b6 45.Kc2 b4 46.Kd3 Nh5 47.f5 Ng3 48.Nc1 h5 49.Kc2 h4 50.Na2 h3 51.Nc3 bc3 52.Kc3 h2 53.Kd4 h1Q 54.e4 Qd1 55.Ke3 Qe2 56.Kf4 Qf2 57.Kg4 Ne4 (58.Kh5 Qf5 59.Kh6 Ng5 60.Kh5 d4 61.Kh4 Qh3#) 0–1. Jolilein – Steffen42@, mySchach.de, 2005.

3.Nc3 a6 4.e4 ab5 5.Bb5 c6 6.Bc4 (6.Bf1=+) 6...Qb6 (6...b5!? 7.Bd3 b4–/+) 7.Rb1 Qa7 8.Nf3 Ng4 (8...b5!? 9.Bb3 b4 10.Ne5 bc3 11.Bf7 Ke7–/+) 9.0-0 (9.Bf7!? Kf7 10.Ng5 Ke8 11.Qg4+/–) 9...Bc5+= 10.Ng5 (10.Bf7 Ke7 11.Qe2 Bf2 12.Kh1 Bc5+=) 10...Bf2 (10...Nf2!? 11.Bf7 Kd8–/+) 11.Kh1= d5 12.ed5 cd5 (12...0-0!? 13.dc6 bc6+=) 13.Nd5 Rf8? (better is 13...b6+/–) 14.Nc7+- Kd8 15.Na8 Qa8 16.Rb3 (16.Qf3 Qa4 17.Nf7 Rf7 18.Qf7 Qc2 19.Qg8 Kc7 20.Qg7 Nd7+-) 16...Qa7 (16...Bc5 17.Nf7 Rf7 18.Rf7 Nf2 19.Rf2 Bf2 20.Qh5+-) 17.h3 (17.Nf7 Ke7 18.Ba3 Bc5 19.Bc5 Qc5 20.Rb7 Bb7 21.Qg4 Bc8 22.Qg5 Kd7 23.Ne5 Kc7 24.Qg7 Nd7 25.Rf8 Qf8 26.Qh7 Qb4+-) 17...Nc6 (17...f6 18.Nf7 Ke7+-) 18.hg4 Qc5 (18...f6 19.Ba3 Re8 20.Nf7 Kc7 21.Bd6 Kd7 22.Qf3+-) 19.Qe2 (better is 19.Nf7 Kd7 20.Qe2 Nd4 21.Qf2 Nb3 22.ab3 Qf2 23.Rf2 Kc7+-) 19...Bh4 (19...Nd4 20.Qf2 Qc4 21.Rc3 Qa2 22.Ba3+-) 20.Qd3 (20.Nf7 Rf7 21.Rf7 Nd4+-) 20...Nd4 21.Ba3 Qc6 22.Bf8 Ke8 (22...Bg5 23.Bg7 Bd7+-) 23.Bf7 Kd8 24.Nf3 Qh6 25.Bd6 (better is 25.Kg1 Bg3+-) 25...Bg4 (25...Be7 26.Bh5 Qd6 27.Nd4 Qd4 28.Qh7+-) 26.Rb7 (better is 26.Kg1 Bf3 27.Be5 Bc6+-) 26...Bf2 (26...Bg3 27.Bh5 Qh5 28.Kg1 Nf3 29.Rf3 Qh2 30.Kf1 Qh1 31.Ke2 Qe1) 27.Nh2 Be2 28.Qa3 Bg4 29.Be7 Kc8 30.Qa8 1–0. Taulien,Christian – Fritz,Marco, remoteschach.de, 2001.

3.Nc3 c6 4.a4 (4.Nf3 e4 5.Ne5 d6–/+) 4...Bc5 (4...d5 5.Nf3 d4 6.Nb1=+) 5.e3 (5.Ba3 Ba3 6.Ra3 d5=+) 5...0-0 (5...d5 6.Ba3 Ba3 7.Ra3=+) 6.Be2 (6.Nf3 e4 7.Nd4 d6=+) 6...d5 7.Nf3 d4 8.ed4 ed4 9.Na2 Bg4 (9...Qa5 10.0-0=+) 10.0-0=+ Re8 11.Bc4 (11.Re1 Qb6 12.Kh1 cb5 13.Bb5 Re1 14.Qe1 Bf3 15.gf3 a6–/+) 11...Nbd7–/+ 12.h3 Bf3 13.Qf3 Ne5 14.Qe2 (14.Qb3 Nc4 15.Qc4 Qd5 16.Qd5 Nd5–/+) 14...Nc4 15.Qc4 Bd6 16.Bb2 c5 17.c3 dc3 18.Nc3 Be5 19.d3 Qd6 20.Ne4 Ne4 21.Be5 Qe5 22.de4 Qe4 23.Qc5 b6 24.Qg5= Re5 25.Qg3 Qf5 26.Rac1 Rae8 27.f4 Re4=+ 28.Ra1 R8e6 29.Qf3 Re3 30.Qa8= Re8 31.Qa7 Qc5 32.Kh1 Qd5 33.Kh2 Re2= 34.Rg1 Qf3 35.Qb6+= Qf4 36.Kh1 R2e4 37.Qc6 h6 38.b6 Rb8? 39.a5 Rc4 40.Qb5 Rb4 41.Qd7 Rd4 42.Qa7 Rdd8 43.Raf1 Qc4 44.Qf7?? Qf7-+ 45.Rf7 Kf7 46.Rb1 Rd5 47.a6–/+ Ra5 48.a7 Rb7 49.Rb5 Ra1 50.Kh2 Ke6 51.Kg3 Kd6 52.Kf4 Kc6 53.Rb2 Rb6 54.Rc2 Kb7 55.Ke5 Ra5 56.Kf4 Rb4 57.Kg3 Ra3 58.Kh2 Ra7 59.Rf2 Kb6 60.g4 Ra3 61.Kg2 Rbb3 (62.Rf7 Rb2 63.Rf2 Rf2 64.Kf2 Rh3-+) 0–1. icewater – Blacknight, Caissa.com, 2004.

3.c4 Bb4 4.Qb3 Ba5 5.Bb2 (5.Qa3 c6+=) 5...d6–/+ 6.e3 0-0 7.g3 (better is 7.Nf3!?–/+) 7...Nbd7-+ 8.Bg2 Nc5 9.Qa3?? (9.Qc2 e4 10.Nc3 d5-+) 9...Bb6 (better is 9...Bb4! 10.Qb3 Nb3 11.ab3 Nd7-+) 10.Ne2 Re8 (10...Bf5 11.d4 Nd3 12.Kf1-+) 11.d3? (better is 11.d4 ed4 12.Nd4–/+) 11...Bg4-+ 12.Nd2 Be2 (better is 12...a6!? 13.Qc3 ab5 14.Qc2-+) 13.Ke2 Qd7 (13...a6 14.Qc3 ab5 15.cb5–/+) 14.h3 (14.Qc3 Qg4 15.Bf3 Qf5–/+) 14...Rab8 (14...a6!? 15.ba6 Ra6-+) 15.Rag1 Ne6 (15...h6!?–/+) 16.g4 c6 17.bc6 bc6 18.Qa4 Rec8 ½–½. Deneuville,Christian – Unger, corr SOK–96–112, 1996.

3.c4 Bc5 4.e3 +=.

3.c4 d6 4.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

3.c4 g6 4.Bb2 d6 5.e3 Bg7 6.h3 0-0 7.Nc3 Nbd7 8.d4 Re8 9.Be2 ed4–/+ 10.ed4 Nb6 11.Qb3 Be6 12.d5 Bf5 13.Rd1 (13.Nd1 Nbd7 14.Ne3 Nc5–/+) 13...Nbd7 14.Na4 Qe7?? (better is 14...a6 15.ba6 ba6–/+) 15.g4+/– Ng4 16.hg4 Bg4 17.f3 Bb2 18.fg4 Bf6 19.Qh3 Nf8 20.Rd2 (20.Qf3!?+/–) 20...Qe4= 21.Qf3 Qc4 22.Kf1?? (22.Qf6!? Qa4 23.Kf2+=) 22...Qc1 (better is 22...Qb4 23.Rd1 Bg7-+ (23...Qa4?! 24.Qf6 Re4 25.Qb2=)) 23.Rd1+= Qg5 24.Nh3 Qe5 25.g5 (25.Nf2 Re7=) 25...Bg7 (25...Bg5 26.Nb2+=) 26.Nf2 (better is 26.Rc1!?=) 26...Qg5–/+ 27.Rg1 (27.Nc3 Qe3 28.Rd3 Qf3 29.Rf3 Re7–/+) 27...Qe3 28.Rg3 Qf3 29.Rf3 Re7 30.Ng4 Re4 31.Nf6?? (better is 31.Ra3-+) 31...Bf6 32.Rf6 Ra4 33.Rd2 Nd7 34.Rf3 Re8 (34...Re4 35.Ra3-+) 35.b6 Nb6 36.Bb5 Rae4 37.Be8 Re8 38.Rdf2 (38.Rc3 Re7-+) 38...Re7 39.Rd3 h5 40.Rf4 Re5 41.Rfd4 Kg7 42.Kf2 f6 43.a4 a5 44.Kg3 (44.Rb3 Nd5 (worse is 44...Rd5 45.Rd5 Nd5 46.Rb7-+) 45.Rb7 Kh6-+) 44...g5 (44...g5 45.Rb3 Nd5 46.Rb7 Kg6-+) 0–1. Gross,Wilhelm – Van Kerckvoorde, Frankfurt am Main, 1984.

3.d3 d5 4.Nf3 Bd6 5.Bg5 –/+.

3.d4 e4 4.Bg5 a6 5.ba6 Na6 6.e3 h6 7.Bh4 d5 8.Ba6 ba6 9.Ne2 Be7 10.c4 g5 11.Bg3 Bb4 12.Nbc3 0-0 13.Qb3 Rb8 14.Be5 Bg4 15.Bf6 Qf6 16.cd5 Be2 17.Ke2 Qf5 18.Rhc1 Bd6 19.Qc2 Rfe8 20.h3 h5 21.Rab1 Rb6 22.Rb6 cb6 23.Kf1 b5 24.Kg1 Ba3 25.Rb1 g4 26.hg4 hg4 27.Qb3 Bd6 28.g3 f6 29.Rc1 Rc8 30.a3 Kh8 31.Rc2 Rc4 32.a4+/– Qc8 33.ab5 ab5 34.Qb5 Kg7 35.Ne4 Rc2 36.Nd6 Qf8 37.Qd7 Kh6 38.Qe6 Rc1 39.Kg2 Rc2 40.Ne4 Qc8 41.Qf6 Kh7 42.Ng5 Kg8 43.Qf7 Kh8 44.Qh7 1–0. GLChess211 – Bace, computer chess game, 2001.

3.e3 Bc5 4.a4 0-0 5.Nc3 (5.Bb2 d6=+) 5...a6 6.ba6 Na6 7.Nf3 Qe7 (7...e4 8.Nd4–/+) 8.Bb2 Nb4 9.Nb5 c6 (9...d6 10.d4 ed4 11.Bd4–/+) 10.Na3 (better is 10.Nc7!? Ra5 11.Be5= (< 11.Ne5 Bd6 12.Nc4 Bc7–/+)) 10...d6 11.d4 ed4 12.Nd4 Ra4 (12...Bg4 13.Be2 Bd4 14.Bd4 Be2 15.Qe2–/+) 13.Nc4?? (better is 13.c3 b5 14.cb4 Bb4 15.Ke2=) 13...Bg4 14.Be2 Be2 15.Qe2 Ra1 16.Ba1 Qe4 17.0-0–/+ Nfd5 18.Nd2 Qh4 19.g3 Qg5 20.N2f3 Qg4 21.Re1 Ra8 22.Bb2 Ra2 23.c3? Nc3!!-+ 24.Qd2 Nbd5 25.Ra1 Bd4 26.ed4?? Ra1 27.Ba1 Qf3 28.Bc3 Nc3 29.Qe1 Ne2 30.Kf1 d5 31.Qe2 Qh1 0–1. wulfy – babylyub, ICS, 1998.

3.e3 Be7 4.Nf3 (4.Bb2 d6=+) 4...e4–/+ 5.Nd4 0-0 6.Be2 a6 7.a4 ab5 8.Nb5 c6 9.Nd4 d5 10.Bb2 (10.0-0 Nbd7–/+) 10...Nbd7 (10...Qb6 11.Nb3–/+) 11.0-0 (11.Nc3 Qc7–/+) 11...Nc5 12.c4 (12.Nc3 Qc7–/+) 12...dc4 13.Bc4 Ng4 (13...Bd6 14.h3–/+) 14.f4 Bf6 (14...ef3 15.Nf3 (15.Rf3? Bd6 16.g3 Ne5-+) 15...Bf6 16.Nc3=+) 15.Qc2=+ Nd3 16.Bd3 ed3 17.Qc4 (17.Qd3? c5 18.h3 Nh6-+ (18...cd4?! 19.hg4 de3 20.Qd8 Bd8 21.de3=+)) 17...Re8 18.Na3 (18.Qd3? c5 19.Na3 cd4-+) 18...Qe7 19.Bc3 (19.h3 Nh6 20.Bc3 Rd8=+) 19...Rd8–/+ 20.Nb3? (20.Rfe1 c5 21.Nf3 Bc3 22.Qc3 Ra4–/+) 20...Bc3 (better 20...Be6 21.Bf6 Qf6-+ (21...gf6?! 22.Qc5 Qd7 23.Qc3+=; worse 21...Nf6 22.Qc5 Qe8 23.Qb4-+)) 21.Qc3–/+ Ra4 (21...Nf6 22.Nc4–/+) 22.Nc5 Ra8 23.Nd3 Bf5 24.Ne5 Ne5 25.fe5 Bd3 26.Rfc1 Qg5 27.Nc2 Ra1 28.Ra1 Bc2 29.Qc2 Qe5 30.Ra7 Qb8 31.Ra2 Rd6 32.d4 Re6 33.Qb3 b5 34.Ra6 g6 (34...h5 35.Qa2 Qf8 36.Qa3–/+) 35.Qa3=+ Qf8 36.Qf8 Kf8 37.Kf2 Kg7 (37...h5 38.Rb6=+) 38.Kf3 Rd6 39.Ke4 (39.g4 Kf6=+) 39...Kf6 40.Ra7 Ke6 (40...h5 41.h3=+) 41.g4 Rd7 42.Ra6 f5 43.gf5 gf5 44.Kf4 (44.Kd3 Kd6=+) 44...Kd5 45.Kf5 Rb7 46.e4 Kd4 47.Rc6? (47.e5 b4 48.Rc6 b3 49.Rd6 Kc3=+) 47...Rf7?? (47...b4 48.e5 b3 49.Rd6 Kc5=+) 48.Kg5 (48.Ke6 Rf8 49.Rb6 Re8 (worse 49...Ke4 50.Rb5 h6 51.Rb4 Kf3 52.Ke5=) 50.Kf6 Re5–/+) 48...Re7–/+ 49.Rd6 (49.Rb6 Kc5 50.Rb8 Re4 51.Rc8 Kd4 52.Rb8-+) 49...Ke4-+ 50.Rb6 Re5 51.Kh6 (51.Kg4!?-+) 51...Kd4 52.Kh7 (52.h4 Kc4 53.Rf6 b4 54.Rf4 Kc3 55.Kh7 Rb5-+) 52...Kc5 53.Rb8 (53.Rh6 b4 54.Rh3 Kc4-+) 53...Rh5 54.Kg6 Rh2 55.Kf5 (55.Kg5-+) 55...b4 56.Ke4 (56.Kg5 Kc4 57.Rc8 Kd4 58.Rd8 Kc3 59.Rc8 Kb2-+) 56...Kc4 57.Rc8 Kb3 58.Rb8 (58.Kf4 Kb2 59.Rb8 b3-+) 58...Kc2 59.Rc8 Kb2 60.Rb8 (60.Kd3 b3 61.Rg8-+) 60...b3 61.Kd3 (61.Kf4 Kc2-+) 61...Ka2 62.Ra8 Kb1 63.Rb8 (63.Kc3 b2-+) 63...b2 64.Rb7 Rh3 65.Kd2 Ka2 66.Ra7 (66.Kc2 b1Q! 67.Rb1 Rh2 68.Kd3 Kb1 69.Kd4-+) 66….Ra3 (66...Ra3 67.Ra3 Ka3 68.Ke3 Ka4 69.Kf4 b1Q 70.Ke5 Qb2 71.Kf5 Qd4 72.Kg6 Qd8 73.Kg7 Qc7 74.Kg8 Qe5 75.Kf7 Qh5 76.Ke6 Ka3 77.Kf6 Qf3 78.Kg7 Ka4 79.Kg8 Qd5 80.Kg7 Kb3 81.Kh7 Qf5 82.Kg7 Kb4 83.Kg8 Qg5 84.Kh8 Qg3 85.Kh7 Kc4 86.Kh6 Kd4 87.Kh5 Ke5 88.Kh6 Kf6 89.Kh5 Qg5) 0–1. GuestFXQQ – GuestMLHH, freechess.org, 2020.

3.e4 Ne4 4.f3?? (better is 4.Qe2 d5 5.f3–/+) 4...Ng3 (better is 4...Qh4 5.g3 Ng3 6.hg3 Qh1-+) 5.hg3+- Bb4 (5...d5 6.Bb2 Bd6 7.Bd3+/–) 6.c3 Ba3?? (better is 6...Bd6+-) 7.Ba3 c5 (7...d6 8.d4+-) 8.Bc5 d5 9.Na3 Nc6 (9...Nd7 10.Bd6 Qb6+-) 10.bc6 bc6 11.g4 Rb8 (11...Qa5 12.Bb4 Qc7 13.d4+-) 12.Ba7 Rb3 (12...Rb7 13.Be3 Qd6+-) 13.ab3 Qa5 14.Be3 Qc5 15.Bc5 Rf8 16.g5 (16.Bf8 Kf8 17.Rh7 Kg8+-) 16...f5 17.gf6 (17.Bf8 Kf8 18.Rh7 Kf7+-) 17...Rf6 18.Rh7 g5 19.Re7 Kd8 20.Re5 Bb7 21.Nh3 (better is 21.Be7 Kc8 22.Bf6 c5+-) 21...g4 22.fg4 (better is 22.Be7 Ke8 23.Bf6 Kf7+-) 22...d4 23.Bd4 (better is 23.Be7 Kc7 24.Bf6 Bc8 25.Re7 Bd7+-) 23...c5 24.Bc5 Rf1 25.Kf1 Bg2 26.Kg2 Kc8 (26...Kd7 27.Re7 Kc6 28.d4 Kd5 29.Qf3) 27.Re8 (27.Re7 Kd8 28.Nc4 Kc8 29.Ra8) 27...Kc7 (27...Kd7 28.Re7 Kc6 29.d4 Kd5 30.Qf3) 28.Nb5 (28.Re7 Kc6 29.d4 Kd5 30.Qf3) 28...Kc6 (28...Kd7 29.Qe2 Kc6 30.Ra6 Kc5 31.Qe5) 29.Nd6 (29.Ra6 Kb5 30.Qe2 Kc5 31.Qe5) 29...Kc5 30.Ne4 (30.Ra6 Kd5 31.Nf4 Kc5 32.d4) 30...Kd5 (30...Kc6 31.Ra6 Kb7 32.Rae6 Kc7 33.Qg1 Kd7 34.Qa7) 31.d3 (31.Qg1 Kc6 32.Qc5 Kd7 33.Nf6) 31...Kc6 32.Rc8 (32.Ra6 Kd7 33.Rae6 Kc7 34.Qg1 Kd7 35.Qa7) 32...Kb6 (32...Kd7 33.Rca8 Kc7 34.R1a7 Kc6 35.Rc8 Kb6 36.Qg1 Kb5 37.Qc5) 33.b4 (33.Qg1 Kb7 34.Nd6) 33...Kb5 (33...Kb7 34.Nd6 Kb6 35.Qg1) 34.Rb8 (34.Nd6 Kb6 35.Qg1) 34...Kc6 35.Qf3 Kc7 36.Rb5 (36.Qf4 Kd7 37.Qd6) 36...Kd7 (36...Kc8 37.Ra7 Kd8 38.Rb8) 37.Qf7 Kc6 (37...Kd8 38.Rb8) 38.Qe8 (38.Qb7) 38...Kc7 39.Ra7 1–0. Franziska,Franzi – Bia,Bianca, remoteschach.de, 2002.

3.Nf3 d6 4.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.Nf3).

3.Nf3 e4 4.Ne5 d6 –/+.

3.h3 c6 4.c4 Qb6 5.e3 Ne4 (5...cb5 6.cb5 d5 7.d4=+) 6.Bb2 f6 (6...d6 7.Qc2 Nc5 8.d4 Qa5 9.Qc3 Qc3 10.Nc3 ed4 11.ed4+=) 7.Na3 (7.Qh5!? Kd8 8.Qh4=) 7...Qa5 8.Bd3 (8.Qc1 Nd2 9.Qd2 Bb4-+) 8...Nf2 9.Kf2 Ba3 10.Bc3 Bb4 11.Qb3 (11.Qh5 Ke7 12.Ne2 d5=+) 11...Bc3–/+ 12.dc3 Qc7 (12...a6 13.b6–/+) 13.Qa4 (13.Qc2!?–/+) 13...cb5 14.cb5 Qc3 15.Rd1 b6?? (15...d5 16.Ne2 Qc7 17.Rc1–/+) 16.Be2?? (better is 16.Be4 Qb2 17.Ne2+-) 16...Bb7-+ 17.Rh2 (17.Bh5 g6 18.Ne2 Qb2=+) 17...0-0 (17...Qb2 18.Nf3-+) 18.Bc4 Kh8 19.Bb3 (19.Ne2!? Qb2 20.Bd3–/+) 19…a6-+ (20.Qa3 Rc8-+) 0–1. riverborne – JoeJoe, Live Game Caissa's Web, 2004.

3.h3 Be7 4.d4 (4.Nf3 a6 5.ba6 Nc6=+) 4...e4 5.e3 0-0 6.a3 (6.c4 d5–/+) 6...b6 (6...a6!?-+) 7.c4–/+ c5 (7...a6 8.Nc3–/+) 8.g4 (8.Ne2 a6=+) 8...g6 (8...cd4!? 9.Qd4 Bc5–/+) 9.d5=+ d6 10.a4 (10.Nc3=+) 10...a5 (10...a6!?–/+) 11.Ra2 (11.Nd2 Nbd7=) 11...Nbd7=+ 12.Ne2 (12.Nd2!?=+) 12...Ne5–/+ 13.Qc2?? (13.Bg2 h5–/+) 13...Nf3 (better 13...Nd3 14.Kd2 Nf2-+) 14.Kd1–/+ Bb7 (14...h5!?–/+) 15.Nec3= Nd7 (15...Qd7 16.Nd2=) 16.Qe4 (16.Ne4 Nf6+=) 16...Nde5 17.h4?? (17.Nd2 f5 18.gf5 Rf5 19.Nf3 Nf3+=) 17...Bh4?? (better 17...Bc8!? 18.g5 Bf5-+) 18.Nd2 (better 18.Bg2 f5 19.gf5 Rf5 20.Bf3 Nf3 21.Nd2 Nd2 22.Rd2=) 18...Re8?? (better 18...Nd2 19.Bd2 Bf2–/+) 19.Nf3+- Bf2 (19...Bf6 20.Bd2 Bc8 21.Ne5 Be5+-) 20.Rf2 Nc6 (20...Bc8 21.Ne5 Re5+-) 21.Qf4 Re7 22.Qh6 f6 23.g5 (better 23.dc6 Bc6 24.bc6 Raa7+-) 23...f5 24.Qh2 (better 24.dc6 Bc8 25.Nd5+-) 24...Re3 (24...Ne5 25.Ne5 de5+-) 25.Qh7 Kf8 26.Be3 (26.Qh8 Kf7 27.Rh7) 26...Ne7 27.Qh8 Ng8 28.Rh6 (28.Rh7 Qe7 29.Re7 Ke7 30.Qg7 Kd8 31.Rh2 Ne7 32.Rh7 Bd5 33.Qe7 Kc8 34.Qc7) 28...Qe7+- 29.Rh7 Qe3 30.Qg7 (30.Qg7 Ke8 31.Qg8) 1–0. patrick317 – amar12, gameknot.com, 2017.

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

3.Bb2 Bc5 (--> 2.b5 Bc5 3.Bb2 Nf6).

3.Bb2 Bc5 4.Nf3 d6 5.e3 (--> 2.b5 Bc5 3.Bb2 Nf6 4.e3 d6 5.Nf3).

3.Bb2 c6 4.a4 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 c6).

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

3.Bb2 d6 4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

3.Bb2 d6 4.c4 Nbd7 5.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Nbd7).

3.Bb2 d6 4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

3.Bb2 d6 4.c4 Be6 5.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Be6).

3.Bb2 d6 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5).

3.Bb2 d6 4.e3 a6 5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 a6).

3.Bb2 d6 4.e3 Nbd7 5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Nbd7).

3.Bb2 d6 4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.b5).

3.Bb2 d6 4.e3 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

3.Bb2 d6 4.e3 Be7 5.Nf3 0-0 6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 0-0 6.Nf3).

3.Bb2 d6 4.g3 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.b5).

3.Bb2 e4 4.a4 c6 5.c4 d5 6.e3 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5 5.c4 c6 6.a4).

3.Bb2 e4 4.a4 d5 5.e3 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5 d5 5.a4).

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

4.d4 Bb4-+ 5.Bb2? Ne4 6.Qd3 Qf6 7.Nf3 ed4 8.Qd4 Qd4 9.Nd4 Bc3 10.Bc3 Nc3 (11.e3 a6-+) 0–1. Zamoht – grandmaster goldberg, ChessWorld.net, 2005.

4.e3!? –/+.

4.Nf3 –/+.

4.d4 dc4–/+ 5.Nf3? (5.e3 Be6–/+) 5...ed4 (better is 5...e4 6.e3 ef3 7.Qf3 Bb4 8.Bd2 Bd2 9.Kd2 Be6-+) 6.Nd4?? (6.Qd4 Qd4 7.Nd4 Bb4 8.Bd2=+) 6...Bb4-+ 7.Bd2 Bd2 8.Qd2–/+ c6 9.bc6 Nc6 10.e3 Nd4–/+ 11.ed4 0-0 12.Be2 Bf5 13.Na3 Re8 14.0-0? Ne4?? 15.Qc1 c3-+ 16.Rd1 Rc8 17.f3? Nd2 18.Nb5 Re2 19.Qa3 c2 20.Rdc1 Nc4 21.Qa7 Ne3 22.g3 Rg2 23.Kh1 Rd2 24.Qa3 Rd1 25.Rd1 cd1Q 26.Rd1 Nd1 27.Nd6 Rc3 28.Qb4 Rf3 29.Nb7 Qd5 30.Kg1 Rg3! 31.hg3 Qf3 32.Qb3 Qf2 33.Kh1 Be4 (34.Qf3 Bf3) 0–1. gdraper (2035) – oracleinshadows (1725), net–chess.com, 2006.

4.cd5!? Nd5 5.Bb2=+.

4.e3 Be6 5.Bb2 Nbd7 6.cd5 Nd5 7.Nc3 Bb4 (7...Bd6 8.Ne4=+) 8.a3 Ba5 9.Rc1 0-0 10.Nf3 Nc3 11.Bc3 Bc3 12.dc3 Qe7 13.a4 (13.Qa4!?=+) 13...Rad8 14.Qc2 Nc5 15.c4 (15.a5 Qf6–/+) 15...e4 16.Nd4 Bg4 17.h3 Bh5 (17...Rd4 18.hg4 Rd7 19.Be2–/+) 18.g4 (18.Nf5 Qe5 19.Nd4 Rfe8–/+) 18...Bg6 19.Rd1 Nd3 20.Bd3 ed3 (20...Rd4 21.Be2 Rd1 22.Qd1 Qb4 23.Kf1=+) 21.Qd2?? (better 21.Qc3–/+) 21…Rd4-+ 0–1. Kislov,Leonid – Mukhortov,Evgeny, 2012.

4.e4 0-0 5.Nf3 c6 (5...d5 6.Ne5 Bd6 7.Bf4=+) 6.Ne5= Re8 (6...cb5 7.Be3=) 7.c3 (7.a4 d6 8.Nf3 Be6=) 7...cb5=+ 8.Nf3 d5 (8...b4=) 9.Nbd2 (9.e5 Bd6 10.d4 b4=+) 9...Nc6 (9...Bd6 10.Qc2=+) 10.e5=+ Ng4 (10...Bf5 11.Be2 Nd7 12.d4=+) 11.d4 f6 (11...b4 12.cb4 Bb4 13.Bb5=+) 12.Be2 (better is 12.h3 Nh6 13.Bb5 fe5 14.Ne5+=) 12...fe5–/+ 13.de5 Nge5 14.0-0 Bf6 15.Bb5 Bd7 16.Ne5=+ Ne5 17.Bd7 Qd7 18.Bb2 Nd3 19.Qc2 Qb5 20.Ba3 Rac8 21.Rab1 Qa6 22.Qb3 Rc3 23.Qd5 Kh8 24.Qd7?? Rd8-+ 25.Qe6 Qa3 26.Rb7 Qd6 27.Qe4?? Nc5-+ 28.Nc4 Qh2! 29.Kh2 Ne4 30.Na5 Rc2 31.Rfb1 h6 32.Rb8 Rb8 33.Rb8 Kh7 34.g3 Rf2 35.Kh3 Ng5 36.Kg4 Ra2 37.Nc6 Ra4 38.Kf5 Nf7 39.Rb7 Nd6 40.Ke6 0–1. pinecrest1981 – Pa118, Live Game Caissa's Web, 2005.

4.e4 d5 5.ed5 Nd5 6.Nf3 Bb4 7.Bd2 =+.

4.Nf3 d6 =+.

4.g3 d6 5.Bg2 c6 6.a4 a6 7.bc6 Nc6 8.Nf3 h6 (8...d5 9.0-0=+) 9.Nbd2 (9.c4 d5 10.cd5 Nd5=) 9...Be6 10.c4 Qd7 11.Bb2 0-0 12.h3 a5 (12...Qc7 13.Rc1=+) 13.Bc3 (13.g4 Rab8=) 13...Rfc8 (13...Qc7 14.g4=) 14.e4 Nb4 15.Qb1 Nc6 16.Nf1 Bd8 17.Ne3 Ra6 18.Qc2 Nh7 19.g4 Ng5 20.Nh2 Bb6 21.Nd5 Bd5 22.ed5 Nd4 23.Qd1 f5 24.h4 Nh7 25.Rb1 Rf8 26.Rb2 (26.g5 hg5 27.hg5 Ng5=) 26...Bd8 (26...fg4 27.Ng4 Rf4 28.Ne3=) 27.Nf3 (27.Bd4 ed4 28.gf5 Qf5=) 27...fg4= 28.Nd4 ed4 29.Bd4 Bf6 30.Bf6 Nf6 31.0-0 Raa8 32.Rb5 h5 33.Qb3+= Ra7 34.Rb1 Rf7 35.Qc3 Qd8 36.Qd4 Qb8 37.Qf4 Nd7 38.Qg5 Ne5 39.Qh5 g6 40.Qg5+- Rf5 41.Qe3 Rf7 42.c5 Nf3? 43.Bf3+- gf3 44.cd6 Qd8?? 45.Qd4 Qd7 46.Re1 Qh3?? 47.Re8 Rf8 48.Rf8 Kf8 49.Qf6 Kg8 50.Qg6 Kf8 51.Rc5 Qg2 52.Qg2 fg2 53.Kg2 Ke8 54.Rc7 Ra6 55.Rb7 Rd6 56.Rb5 1–0. Ristic,Sreten (1940) – Holzweissig,Hans Joachim (1880), Pinneberg–ch, 2006.

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

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

4.Nf3 Bd6 5.c4–/+.

4.Nf3 Bd6 5.d4–/+.

3.d4 e4?? 4.Bg5+- Nc6 5.bc6 Nf6 6.Bf6 Bb4 7.c3 gf6 8.cb4 dc6 9.d5 Bg4 10.f3 Rd8 11.fg4 Rd5 12.Qd5 0-0 13.Qe4 Re8 14.Qe8 (14...Kg7 15.e3 b5 16.Ne2 f5 17.Ng3 fg4 18.Qe5 Kg6 19.Bd3 f5 20.Qe6 Kg7 21.Nf5 Kf8 22.Qf6 Ke8 23.Qe7#) 1–0. MasterofDisaster – sparkee, Live Game Caissa's Web, 2004.

3.d4 Qe7=.

3.d4 Qh4 4.Nf3 Bb4? 5.c3+- Bc3 6.Nc3 Qe7 7.de5 f6 8.Nd5 Qc5 9.Be3 Qb5 10.Nc7 Kd8 11.Nb5 a6 12.Bb6 Ke8 13.Nc7 Ke7 14.Bc5 d6 15.Qd6 Kf7 16.Nh4 Be6 17.Qe6# 1–0. Pierred (2105) – Desert eagle1903, Rated game, 1m + 2s, 2005.

3.Nf3 Qf5 4.e3 e4 5.Nd4 Qd5 6.Nc3 Qe5 7.f4 Qe7 8.Nd5 Qd6 9.Bc4 (9.c4 c6 10.Nf5 Qg6 11.Nc7 Kd8 12.Na8 Qf5+-) 9...c6 10.Nf5 (10.Ba3 Qa3 11.Nc7 Kd8 12.Na8 Nf6 13.Bf7 c5+-) 10...Qg6 11.Nc7 Kd8 12.Na8 (12.b6 ab6 13.Na8 b5+-) 12...cb5+- 13.Bb3 (13.Bf7!? Qf5 14.Bb3+-) 13...Qf5+= 14.Bb2 (better 14.0-0+=) 14...Qg6? (better 14...Nh6!? 15.Qe2 b6=) 15.0-0+- Be7 (15...Nh6 16.Qe2 b4+-) 16.f5 Qh6 (16...Qg5 17.Qe2 Bf6 18.Bf6 Qf6 19.Qg4+-) 17.a4 (better 17.Qe2+-) 17...Bf6? (17...ba4 18.Ra4 Nc6+-) 18.Bf6 Nf6 (18...Qf6 19.ab5 a6 20.Qg4 ab5 21.Ra5+-) 19.ab5 Ke7 (19...d6 20.Ra7 Nbd7 21.Qa1+-) 20.Ra7 Kd8 (20...d6 21.Nb6 Nbd7 22.Nc8 Rc8 23.Rb7 Qg5+-) 21.Qa1 Ng4 (21...d6 22.Qc3 Bd7 23.Rb7+-) 22.h3 Nf6 (22...Ne3 23.de3 Qe3 24.Kh1 f6 25.Qa5 Ke7+-) 23.Qa5 Ke7 24.Qc7 g5 25.Nb6 g4 26.Nc8 Rc8 27.Qc8 gh3 28.Rb7 hg2 (28...Nc6 29.Qc6 h2 30.Kh1 Kf8 31.Qd6 Kg7 32.Qg3 Qg6 33.fg6 hg6 34.Qg5 Ne8 35.Rf7 Kg8 36.Qh6 Nd6 37.Qg7) 29.Qc5 Ke8 (29...Kd8 30.Rb8) 30.Rb8 1–0. GuestBHFS – GuestTKTF, freechess.org, 2020.

3.Nf3 Qf6 4.Bb2 d6 5.e4 h6 (5...Qg6 6.d4+-) 6.c4 (6.d4 Nd7+-) 6...Bg4 (6...Qg6 7.Nc3 Nf6 8.d4+=) 7.Be2+- Qe6 (7...Qg6 8.Ne5 de5 9.Bg4+-) 8.0-0 (8.Nc3 Nd7+-) 8...Nf6 9.d4 ed4? (better 9...Nbd7!? 10.d5 Qe7+-) 10.Nd4+- Be2 (10...Qd7 11.Nc3+-) 11.Ne6 (11.Qe2?! Qg4 (11...Qe4?? 12.Qe4 Ne4 13.Re1+-) 12.f3 Qg5+-) 11...Bd1 12.Nc7 Kd7 (12...Kd8 13.Na8 Bc2 14.Bf6 gf6 15.Nc3+-) 13.Na8 Bc2 14.Bf6 (14.Bf6 gf6 15.Nc3+-) 1-0. GuestTCRW – GuestCWCM, freechess.org, 2020.

3.Nf3 Qh5 4.e4 Nf6 5.Bb2 d6 6.Bc4 (6.Nc3!?=) 6...Ne4=+ 7.d3 (7.d4 ed4 8.Qd4 Nc5=+) 7...Nf6-/+ 8.0-0 Bg4 9.Nbd2 d5 10.Bb3 Bf3 (better 10...Nbd7!?=+) 11.Nf3+= e4 (better 11...Bd6!?+=) 12.de4+/- de4 13.Ne5 Qd1 14.Bf7 Ke7 (better 14...Kd8 15.Rad1 Bd6+-) 15.Rad1 (worse 15.Rfd1 Ne8+-) 15...Nbd7 16.Ba3 Kd8 17.Bf8 Rf8 18.Be6 Ke7 19.Bd7 (19.Nd7?! Ke6 20.Nf8 Rf8+-; worse 19.Rd7 Ke6 20.Rc7 Ke5 21.Rb7 Rfc8-/+) 19...Nd7 (19...Rad8 20.Bf5+-) 20.Nd7 (20.Rd7?! Ke6 21.Rc7 Ke5 22.Rg7 Rfc8+-) 20...Rad8 (20...Rf5 21.Rfe1 Rb5 22.Re4 Kf7 23.Ne5 Kf6 24.Ng4 Kg6+-) 21.Nf8 Rf8 22.Rfe1 Rf4 23.f3 e3 24.Re3 Kf8 (24...Kf6 25.Rc3 Rb4 26.a4 Ra4 27.Rc7+-) 25.Rd8 (25.Rc3 c6+-) 25...Kf7 26.Rd7 Kf8 (26...Kf6 27.Rc7 Ra4 28.Rb7 Ra2 29.Rc3+-) 27.Rc3 Ke8 28.Rcc7 Rf7 29.Rf7 (29.Rf7 h6 30.Rg7 Kf8 31.Rh7 Kg8 32.Rhd7 Kf8 33.Rd8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.Bb2 d6 4.c4 Bg7 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.b5).

3.Bb2 f6 (--> 1.b4 g6 2.Bb2 f6 3.b5 e5).

3.g3 c6 4.e3 (4.Nf3 Bg7 5.Bb2 d6=) 4...a6 (4...d5 5.Bb2 Bd6 6.f4=) 5.Bb2= Bg7 (5...d6=) 6.Qf3 (better is 6.f4!?=) 6...ab5–/+ 7.Qe4 (7.e4!?–/+) 7...d5-+ 8.Qb4 Bf5 (8...Na6 9.Qb3-+) 9.Nf3–/+ f6 10.Nh4 (better is 10.d3!?-+) 10...Bc2 11.Nc3 Ba4 (11...Na6 12.Qg4-+) 12.Na4 Ra4 (12...ba4?! 13.Qb7 Nd7 14.Qc6=+) 13.Qc5 Bf8 14.Qc1 Bd6 15.Bh3 f5 16.g4?? Qh4 17.Bg2 Qg4 18.Rg1 Qc4 19.Qb1 Nd7 20.f4 ef4 21.Bh8 Be5 22.Be5 Ne5 23.Bf1 Qc5 24.Be2 f3 25.d4? Qc3 26.Kf2 fe2 27.de5 Rf4 28.ef4+- Qd4 29.Kg2 Qf4 30.Qe1 Qe5+/– 31.Rc1 Nf6 32.Qd2 Ng4= 33.Rh1?? Qe4-+ 34.Kg1 Qf3 35.Qd4 Qe3?? 36.Qe3+/– Ne3 37.Re1 d4 38.Re2 c5+= 39.Kf2 Kd7 40.Kf3 g5 41.h3 h5= 42.a3 Kc6 43.Rg1 g4 44.hg4 fg4 45.Kf4 h4 46.Kg5 h3+= 47.Kh4 c4= 48.Rh1? c3 49.Rc1 Kc5 50.Kg3?? Kc4–/+ 51.Kf4 Kb3?? 52.Ke4–/+ Kc4 53.Re3 de3–/+ 54.Ke3 g3 55.Ke4 g2 56.Rb1? h2 57.Rb4 Kc5 58.Rd4 g1Q 59.Rd5 Kc6 (60.Kd3 Kd5-+) 0–1. solidsteel – smoothstone, Live Game Caissa's Web, 2006.

3.g3 d5 4.Nf3 e4 5.Bb2 =+.

4.c4 Ne7 5.Nf3 d6 6.d4 Nd7 7.e3 0-0 8.Be2 Re8 9.0-0 b6 (9...Nf5 10.Nbd2=) 10.a4 e4 (10...a6 11.Nbd2=) 11.Nfd2+= Bb7 12.a5 Rb8 (12...a6 13.Nc3+=) 13.Nc3 Nf6 14.a6 Ba8 15.d5 Nf5 16.Qc2 Qe7 17.Rfe1 h5 18.g3 Nh6 19.Bf1 Kh7 20.Bg2 Nhg8 21.Rab1 Rbc8 22.Nde4 Ne4 23.Ne4 Bb2 24.Rb2 Qe5 (24...Nf6 25.Ng5 Kg7 26.Nf3+-) 25.f4 Qe7 26.Ng5 Kg7 27.Qc3 Qf6 28.Qf6 Nf6 29.Rbe2 Re7 30.e4 Nd7 31.Bh3 Rce8 32.Bd7 Rd7 33.Kf2 Kf6 34.h4 Rde7 35.Ke3 Kg7 36.Kd4 White intends e5 36...f6 37.Nf3 White prepares e5 37...Kf7 38.Re3 Rd7 39.Kc3 Rde7 40.e5 de5 41.fe5 Kf8 42.Kd4 Kf7 43.ef6 Re3 44.Re3 Re3 45.Ke3 Kf6 46.Ng5 Ke7 (46...Ke5 47.Ne6 Bd5 48.cd5 Kd5 49.Nc7 Ke5 50.Na8+-) 47.Ne6 c6 48.Nc7 cb5 49.cb5 Kd6 50.Na8 Kd5 51.Nb6! Kc5 (51...ab6 52.a7 Passed pawn) 52.Nc8 Kb5 53.Na7 (53.Na7 Ka6 54.Kf4+-) 1–0. Grabmeier,Johannes (2105) – Eichinger,Hans (1895), Niederbayernliga, 2005.

4.c4 Ne7 5.Nf3 f6 6.e4 c6 (6...d6 7.d4=) 7.a4 (7.d4!? d6 8.de5 de5 9.Qd8 Kd8 10.Be2+=) 7...c5 8.Bd3 d6 9.0-0 Be6 10.Nc3 Nd7 11.a5 b6 (11...0-0 12.a6 ba6 13.Ra6+=) 12.ab6 ab6 (12...Nb6 13.Qb3+=) 13.Ra6 0-0 14.Qc2 (14.Qe2 Qc7+/-) 14...Ra6+= 15.ba6 Qc7 (15...Nc6 16.Ra1+/-) 16.Nb5 Qc6 17.a7 (17.Be2 Ra8 18.d4 Bg4+-) 17...Ra8+= 18.Ra1 Nc8 19.h3 Bf8 20.Ra6 Qb7 21.Qa4 Be7 22.h4 Nf8 23.Bb1 Bd7 24.Qa2 Bc6 (24...Ne6 25.Bc2=+) 25.d3 Qd7 26.Bc2 Bb5 (26...f5!?=) 27.cb5+= Kg7 28.Qd5 Ra7 29.Bb3 Do you see the mate threat? 29...Kh6 30.Bc1 g5 31.hg5 fg5 32.Qf7 Ng6 33.Ra7 Qa7 34.Nh2 Bf8 (34...Qd7 35.Be6 Qe6 36.Qe6 Kg7+-) 35.Ng4 (35.Qf6 Qd7 36.Bg5 Kh5 37.Bd1 Qg4 38.Bg4) 35...Kh5 36.Nf6 Kh4 (36...Kh6 37.Ng8 Kh5 38.Qf3 g4 39.Nf6 Kh4 40.Qg4) 37.Qe6 (37.Qe6 d5 38.Qg4) 1-0. DEFFM – GuestKBFR, freechess.org, 2020.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3 d6 9.c4 cb5 10.cb5 b6 11.Bc4 Ne7 12.0-0 Qc7 (12...d5 13.Be2 Nd7 14.Nc3=) 13.Qc1 (13.Qb3 0-0+=) 13...d5= 14.Bb3 Qc1 (better 14...Qd6!?=) 15.Rc1+/- 0-0 (15...Nd7!? 16.Bd5! Nd5 17.Rc8 Ke7 18.Rh8 Bh8+/-) 16.Be5+- Be5 17.Ne5 f6 (17...Be6+-) 18.Rc7 Re8 19.Nf3 Kf8 20.Nd4 h5 (20...Nf5 21.Nf5 Bf5 22.Nc3+-) 21.Nc3 Rd8 (21...Nd7 22.Ne6 Kf7 23.Nf4+-) 22.Nd5! Rd7 (22...Rd5 23.Bd5 Combination; 22...Nd5 23.Bd5 Combination) 23.Ne6 Kf7 24.Nb6 Rc7 25.Nc7 Kf8 26.d4 Nd7 27.Ne6 Ke8 28.Nc4 Nf5 (28...Nb8 29.Nd6 Kd7 30.Ne4+-) 29.e4 Ne7 (29...Nf8 30.ef5 Be6 31.fe6 Ne6 32.Nd6 Kd7 33.Be6 Kd6+-) 30.Nd6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Ne7 8.Nf3 d6 9.Bc4 Bg4 (better 9...d5!? 10.Be2 Nd7=) 10.Bf7!+/- Kf7 11.Ng5 Kg8 (11...Ke8 12.Qg4 Qd7 13.Qd7 Nd7 14.d4+/-) 12.Qg4+- Qd7 13.Qf3 Qf5 14.Qb7 Qc2?? (better 14...Qg5 15.Qb8 Kf7+-) 15.Qb8 Bf8 16.0-0 h6 17.f4 hg5 18.fg5 (better 18.fe5 Kh7 19.ed6+-) 18...Nf5 19.Qc8 Qc5 (19...Qa4 20.Nc3 Qh4 21.h3+-) 20.Nc3 d5 (20...Qc4 21.b6! Qh4 22.Qe6 Kg7 23.Qf6 Kh7 24.Qh8 Kh8+-) 21.Qe6 Kg7 22.Nd5 Bd6 23.Qf6 Kh7 (23...Kg8 24.Qg6 Ng7 25.Qf7 Kh7 26.Nf6) 24.Qf7 Ng7 25.Nf6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 b6 5.Nf3 d6 6.Be2 Bb7 (6...a6 7.d4=) 7.0-0 f5 (7...a6 8.c4+=) 8.a4 a5 9.Bc4 (9.Nc3 Ne7+=) 9...Nf6 (9...Bf3 10.Qf3 e4 11.Qe4 (worse 11.Bg7 ef3 12.g3 d5–/+) 11...fe4 12.Bg7=) 10.Ng5 (10.d4 Ng4+=) 10...d5 (10...Qe7 11.d4 Nd5 12.Nh3=) 11.Bb3 (11.Ne6 Qe7 12.Ng7 Qg7+-) 11...Qe7 Black prepares e4 (11...Qd6 12.d4 Nbd7 13.Nd2+=) 12.Ba3 Qd7 13.d4 e4 (13...ed4 A) 14.Qd4?? Ne4 15.Qd3 Ba1-+ (15...Ng5?! 16.Nc3-+); B) 14.ed4 Kd8 15.Nf3+=) 14.c4 h6 15.Nh3 Qe6? (better 15...dc4 16.Bc4 Nd5+=) 16.Nf4+- Qf7 (16...Qd7 17.Ng6 Rh7 18.Nc3+-) 17.cd5 Bd5 (17...Qd7 18.Ng6 Rh7+-) 18.Nd5 Nd5 19.Nc3!! (19.Nc3 c6 20.bc6 Nc6 21.Bd5+-) 1–0. onur604 (2320) – Pawnking4 (2015), lichess.org, 2020.

4.e3 c6 5.a4 d5 6.Nf3 Bg4 7.Be2 Nd7 8.c4 dc4 9.Bc4 Bf3 (9...f5 10.Be2=) 10.Qf3+= Qf6 11.Qe2 Ne7 12.0-0 0-0 13.Nc3 Nb6 14.Bb3 cb5 15.ab5 Rfd8 16.f4 ef4 (better 16...Nf5+/-) 17.Rf4+- Qd6?? (17...Nf5 18.g4 Qg5+-) 18.Rf7 (18.Bf7?! Kh8 19.Ne4 Qd7+-) 18...Ned5 (18...Bc3 19.Re7 Qd5 20.Bd5 Nd5 21.Rb7 Bb2 22.d4+-) 19.Rg7! (19.Rg7 Kg7 20.Ne4 Kf8 21.Nd6 Rd6 22.Ba3+-) 1-0. onur604 (2320) - Alfaceto_glutarico (2115), Casual Rapid game, 2021.

4.e3 d5 5.Nf3 Nd7 6.Be2 Ne7 7.0-0 0-0 8.c4 a6 9.a4 (9.ba6 ba6 10.d4 e4+=) 9...ab5 10.ab5 Ra1 11.Ba1 c6 (11...dc4 12.e4=) 12.d4 e4 13.Nfd2 Nf6 14.Nc3 Be6 15.Bb2 Qd7 16.Nb3 Bg4 (16...dc4 17.Nc5 Qd6 18.Qc2=) 17.bc6 (17.Bg4 Qg4 18.Qg4 Ng4 19.cd5 Nd5 20.Ne4 cb5+/-) 17...bc6 18.Bg4 Ng4 19.cd5 cd5 20.Ba3 Nf6 21.Be7 Qe7 22.Nc5 Rc8 23.Qa4 (23.f3 Qe8+=) 23...Bf8 24.Qa5 (24.f3 ef3 25.Rf3 Bh6=+) 24...Qc7 25.Qc7 Rc7 26.Rc1 Bc5 27.Nb5 Rb7 28.Rc5 Nd7 (better 28...Kf8!?=) 29.Rd5+/- Kg7 30.h3 f5 31.Kf1 (31.Nd6 Nf6 32.Ra5 Rb6 33.Ra7 Kh6 34.Nf7 Kh5+/-) 31...Nf6 32.Re5 Kh6 33.Ke2 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Ne7 5.Nf3 d6 6.d4 Bg4 7.Bd3 f5 8.de5 de5 9.0-0 (better 9.Nbd2=) 9...0-0?? (better 9...Bf3 10.gf3 Qd6=+) 10.Bc4+- Kh8 11.Qd8 (11.Be5?! Qd1 12.Bg7 Kg7 13.Rd1 Bf3 14.gf3 c6+-) 11...Rd8 12.Ne5 Rf8 13.a4 (13.Bc3 g5+-) 13...h6 (13...Nd7 14.Nd7 Bb2 15.Ra2+-) 14.f3 (14.Ng4 Bb2 15.Ra2 Bg7 16.Nh6 Bh6=+) 14...Bh5 15.Nd2 (better 15.Rd1+-) 15...Be5? (better 15...g5+-) 16.Be5 Kh7 17.Bc7 Nd7 (17...g5 18.e4+-) 18.Bd6 Rfc8 (18...Rae8+-) 19.Be7 1–0. onur604 (2320) – caomado (2090), lichess.org, 2020.

4.e4 c5 5.Nc3 (5.Nf3 d6+=) 5...a6 (5...Nf6 6.Nf3=) 6.Nf3+= ab5 7.Bb5 Ne7 8.Bc4 (8.Na4 Qc7=) 8...d6 (better is 8...0-0+=) 9.Bf7?? (better is 9.Ng5 0-0 10.Qf3+=) 9...Kf7-+ 10.Ng5 Ke8 11.0-0 h6 12.Nf3 Bg4 13.h3 Bf3 14.Qf3 Rf8 15.Qg4 Qd7 16.Qg6?? Ng6 (17.Nd5 Qf7-+) 0–1. trex1 – Rica4Herbert, Live Game Caissa's Web, 2005.

4.e4 Ne7 5.Nf3 d6 (5...d5 6.ed5 Qd5 7.Bd3=) 6.Bc4 Bd7 (6...a6 7.ba6 Na6 8.d4=) 7.a4 (7.0-0 a6 8.a4 f5+=) 7...c6 8.Qe2 (8.Nc3 0-0+=) 8...Nc8 (8...f5 9.Nc3+=) 9.0-0 Nb6 10.Bb3 Qe7 (10...0-0 11.Nc3+=) 11.c4 (11.Nc3 0-0+/–) 11...Be6 (11...Bg4 12.h3 Be6 13.d4+=) 12.a5 (12.d4 ed4 13.Bd4 Bd4 14.Nd4 N6d7+=) 12...N6d7 13.Nc3 (13.d4 Bg4+=) 13...Nc5 14.Ba4 (14.Bc2 Qf6=) 14...0-0 (14...a6 15.bc6 bc6 16.Rfd1=) 15.Rfd1 (15.Bc2 f5=) 15...f5 (15...cb5 16.cb5 Na4 17.Na4 f5=) 16.d4 (16.Bc2 fe4 17.Ne4 Bg4=+) 16...ed4 (better is 16...fe4!? 17.Ne5 Na4 (< 17...de5 18.dc5 Qf7 19.Qe3+=) 18.Ra4 cb5 19.Nb5 de5–/+) 17.Nd4= Qf7 (17...fe4 18.bc6 Na4 19.Ra4 Nc6 20.Nc6 bc6 21.Ne4 Bb2 22.Qb2=) 18.Ne6 (18.bc6 bc6 19.ef5 Bc4=) 18...Qe6 19.f3 (19.a6 A) < 19...fe4 20.ab7 Nb7 21.bc6+/–; B) 19...ba6 20.bc6 Rc8 21.Nd5 Nc6 22.Bg7 Kg7 23.Bc6 Rc6 24.Qb2 Qe5 25.Qe5 de5 26.ef5+=; C) 19...Na4? 20.ab7 (20.Ra4?! ba6 21.bc6 Nc6=) 20...Nc3 21.Bc3+-; D) 19...cb5 20.ab7 Nb7 21.Bb5 fe4+/–) 19...fe4 (19...Bc3 20.Bc3 fe4 21.a6=) 20.Ne4 Ne4 (20...Bb2 21.Qb2 Ne4 22.fe4+=) 21.Bg7+= Kg7 22.fe4 (22.Qe4 Qe4 23.fe4 Rf6+=) 22...cb5 (22...a6 23.Qd3+=) 23.cb5 Nd7 24.Qd3 Rf6 25.Bb3 Qe5 26.Rac1 Nc5= 27.Qd5 Re8 28.Qe5+= Re5 29.Bd5 b6 30.ab6 ab6 31.Rc4 Rf4 32.g3 Rf6 33.Ra1 Re7 34.Ra8 Rf8 35.Rf8 Kf8 36.Kf2 Ra7 37.Rd4 Ke7 38.Kf3 Kf6 39.Bc6 Ke6 40.Kf4 Ra4 41.Ra4+/– Na4 42.g4 h6 43.h4 Kf6 44.g5 hg5 45.hg5 Ke7 46.Bd5 Nc5 47.Kf3 Nd7 48.Ke3+= Ne5 49.Bg8 Nf7 50.Bf7 Kf7 51.Kd3 Ke7 52.Kc4 Ke6 53.Kd4 Ke7 54.Kd5 Kd7 55.e5 ½–½. Martisek,Karel – Pridal,J, Dedek mem Brno, 2000.

4.e4 Nf6 5.Nc3=.

4.f4 d6 5.fe5 de5 6.Nf3 Nd7 7.e3 Ne7 (7...g5 8.d4=) 8.Bc4 0-0 9.0-0 b6? (better 9...Nf5=) 10.Ng5+- Bb7?? (better 10...Nf6+-) 11.Rf7 (11.Bf7?! Rf7 12.Nf7 Qe8+-; worse 11.Nf7 Rf7 12.Bf7 Kh8+-) 11...Nd5 (11...Rf7 12.Bf7 (worse 12.Nf7 Qf8 13.Ne5 Kh8 14.Nf7 Kg8 15.Nd8 Bd5 16.Bd5 Nd5+-) 12...Kf8 13.Qf1+-) 12.Rg7! Kg7 13.Ne6 Kg8 (13...Kh8 14.Nd8 Rad8 15.Qg4+-) 14.Nd8 Rad8 15.e4 N7f6 16.Nc3 Kg7 (16...c6 17.bc6 Bc6 18.Qe2+-) 17.ed5 Nd5 (17...h6 18.Qe2 Rde8 19.Ba3+-) 18.Nd5 Bd5 19.Be5 Kh6 20.Qg4 Bc4 21.Qh4 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.f4 d6 5.Nf3 Bg4 6.e3 Nd7 7.Be2 Bf3 (7...Ne7 8.fe5 0-0 9.0-0=) 8.Bf3+= (worse 8.gf3 Qh4 9.Kf1 Ne7–/+) 8...Rb8 9.0-0 f5 (9...Ne7 10.Be2+=) 10.Qe2 (10.Bd5 Ne7 11.Bb3 c6+=) 10...Ngf6+= 11.Qc4 Nb6 (11...e4!? 12.Be2 d5+=) 12.Qe6+- Qe7 13.Qe7 Ke7 14.fe5 de5 15.Be5 Rhc8 16.Bd4 Ne8 17.a4 Bd4 18.ed4 Nc4 (18...c5 19.dc5 Rc5 20.Re1 Kf6 21.Nc3+-) 19.Re1+- Kf6 20.d3 Ncd6 21.c4 Ng7 22.c5 Nf7 23.Nc3 Ne6?? (better 23...Ng5 24.Nd5 Kf7 25.Re7 Kf8+-) 24.Nd5+- Kg7 25.Re6 c6 (25...Rd8 26.h4 Rd7 27.c6 bc6 28.Rc6+-) 26.bc6 bc6 27.Ne7 Re8 (27...Nd8 28.Rd6 Rc7 29.Re1+-) 28.Rae1 Ng5 (28...Kf8 29.R6e2 Nh6 30.d5+-) 29.Nf5! Kf8 (29...gf5 30.R6e5 Double attack (30.Re8 Discovered attack; 30.R6e5 Decoy)) 30.Rf6 Kg8 31.Re8 Re8 32.Bc6 Re1 33.Kf2 Ra1 34.Bd5 Kh8 (34...Nf7 35.Bf7 Kh8 36.c6 gf5 37.c7 Rc1 38.Bc4 Rc2 39.Ke3 Kg7 40.Rf7 Kh6 41.c8Q Rg2 42.Qf8 Rg7 43.Qg7 Kh5 44.Rf5 Kh4 45.Qg3) 35.Rf8 1–0. Pierre – Brandonli, internet, 2019.

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.b5).

5.d4 Nd7 6.Nf3 e4 7.Nfd2 d5 (7...Ngf6 8.Be2=) 8.c4+= c6 9.Nc3 Ngf6 (9...Ne7 10.Be2+=) 10.Ba3 Qa5 11.Qb3 c5 (better 11...Bf8!? 12.Bb2 Be7+=) 12.cd5+- cd4 (12...0-0 13.Be2+-) 13.Bb4 Qb4? (13...Qd8 14.Nde4 Bf8 15.Bf8 Ne4 16.Ne4 Kf8 17.Qb4 Kg7 18.Qd4 Nf6+-) 14.Qb4 dc3 15.Ne4 Ne4 (15...Nd5 16.Qa3 N7b6 17.Nd6 Kd7 18.Nf7+-) 16.Qe4 Ne5 (16...Kf8 17.Qb4 Kg8 18.0-0-0+-) 17.Qb4 Bf5 (17...Nd7 18.Be2+-) 18.Rc1 Rc8 19.e4 Bh6 (19...Bd7 20.Rc3 Rc3 21.Qc3 0-0+-) 20.Rc3 (20.Rc3 Kd7 21.f3+-) 1-0. onur604 (2320) - the_b3rs3rk3r (2105), lichess.org, 2020.

5.Nf3 Ne7 6.Be2 0-0 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 Bd7 12.Nc3 d5 13.d4 e4 14.Nd2 f5 15.Qb3 Be6 16.Bb2 f4 (16...dc4!? 17.Bc4 Bc4 18.Nc4 Nd5+/-) 17.cd5+/- cd5 18.Nce4! fe3 (18...de4 19.Qe6 Double attack (19.Qe6 Pinning; 19.Qe6 Deflection; 19.Qe6 Decoy)) 19.fe3 Rf1 20.Nf1 Nf5 21.Nc5 Bf7 22.Nb7 Qe8 (22...Qe7 23.Nc5+-) 23.Bf3 Bh6 (23...Qe7 24.Nc5 Qd6 25.b6+-) 24.Bd5 Be3 25.Ne3 Qe3 26.Qe3 Ne3 27.Bf3 Nd5 28.Nd6 Be6 29.Ne4 Nd7 30.Nc5 Nc5 (30...Nc7 31.Nd7 Bd7+-) 31.dc5 Nb4 32.b6 Bd5 (32...Bc8+-) 33.Bd5 Nd5 34.b7 (34.b7 Kf7 35.c6+-) 1-0. onur604 (2320) - Donmatteos (2165), Casual Rapid game, 2021.

5.Nf3 Nf6 6.d4 e4 7.Nfd2 a6 8.c4 ab5 9.cb5 0-0 10.Nc3 d5 11.Qb3 c6 12.a4 Be6 13.Qb4 (13.Ba3 Re8=) 13...cb5 14.Bb5 Na6 15.Qb3 Nc7 (15...Qa5!?=) 16.Ba3+/– Nb5 17.Nb5 Ng4 (17...Qa5!? 18.Bf8 Bf8+/–) 18.h3 Nh6 19.Bf8 Bf8 20.0-0 Qh4 (20...Qa5 21.Qb2+–) 21.f3 (21.Nc7 Bh3 22.gh3 Qg5 23.Kh1 Qh4+–) 21...Bh3 (better is 21...Qg3 22.Rf2 Nf5+–) 22.gh3?? (better is 22.Qd5 ef3 23.Qf3+–) 22...Qg3= 23.Kh1 Qh3 24.Kg1 Qg3 25.Kh1 Nf5 26.fe4?? (better is 26.Rae1 Qh4 27.Kg1 Qg3 28.Kh1 Qh4 29.Kg2 Qg3 30.Kh1=) 26...Nh4 27.Rf2 Qf2 28.Rg1 Qd2 29.Qc3 Qe2 30.Qe1 Qf3 31.Kh2 Qh5 32.Kg3 Nf3 33.Qd1 de4 34.Rh1 Qg5 35.Kf2 h5 36.d5 Bc5 37.Qc1 Ra4 38.Nc3 Ra3 39.Rh3 Be3! 40.Qe3 Qg1 41.Ke2 Qe1 0–1. Boysan,Ferit – Haslinger,Stewart (2410), Internet Section, 2004.

5.Nf3 Nf6 6.Be2 0-0 7.0-0 b6 8.a4 Bb7 9.c4 Nbd7 10.d4 ed4 11.ed4 Ne4 12.a5 ba5 13.Nbd2 Nd2 14.Qd2 c6? (better 14...Nb6!? 15.Qc2 Re8=) 15.bc6+- (15.Ra5?! Re8 16.Re1 cb5 17.Rb5 Be4+=; 15.Qa5?! Qa5 16.Ra5 Rfe8=) 15...Bc6 16.d5 (16.Ra5?! Re8 17.Rfa1 Bh6 18.Qh6 Re2=) 16...Bb7? (better 16...Bb2 17.Qb2 Rb8+-) 17.Bg7 Kg7 18.Qb2 (18.Qb2 Qf6 19.Qb7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Nf6 6.Be2 Bd7 7.0-0 c6 8.a4 0-0 9.d4 Re8 (9...e4!? 10.Nfd2 Re8+=) 10.de5+/- de5 11.Be5 Qb6 12.Nbd2 cb5 13.Bd4 Qe6 14.ab5 a6 15.Ng5 (15.c4 Qe7+-) 15...Qe7 (15...Qf5!? 16.Ndf3 h6+/-) 16.Bc4+- Rf8 17.Ndf3 (17.Qf3!? Be6 18.Ne6 fe6 19.Ne4+-) 17...h6+/- 18.Nf7 (18.Ne5 hg5 19.Ng6 Qb4 20.Nf8 Qc4 21.Bf6 Bf8 22.ba6 Ra6 23.Ra6 Qa6+/-) 18...Rf7+= 19.Ne5 Be6 20.Ng6 (20.Be6!? Qe6 21.Nf7 Kf7 22.Re1+/-) 20...Qe8 21.Bd3 Nd5 22.Qh5 Bd4 (better 22...Nd7!?=) 23.ed4+/- Rg7 (better 23...Kg7!?+/-) 24.Qh6 Rh7 25.Qg5 Rg7 26.Rfe1 Qf7 (26...Nd7 27.Qh6 Rc8 28.ba6 ba6 29.Ra6 Nc7+-) 27.Qd8 Kh7 (27...Qf8 28.Qf8 Kh7 29.Qh8) 28.Qh8 1-0. onur604 (2320) - Donmatteos (2165), Casual Rapid game, 2021.

5.e3 c5 6.Bc4 (6.Be2 Nf6=) 6...Nf6 7.0-0 0-0 (7...e4 8.Ne1=) 8.d3 Bg4 9.h3 Be6 10.Be6 fe6 11.a4 Nd5 (11...a6 12.e4=) 12.Nbd2 Qe7 13.Ne4 Nd7 14.a5 N5f6 (14...a6 15.b6=) 15.c4 (15.a6 ba6 16.Ra6 Nb8 17.Rd6 Ne8=) 15...Ne4 (15...a6 16.Qc2=) 16.de4+= Nf6 (16...a6 17.Qd2 Nf6 18.Qd3+=) 17.Qd3 Rad8 18.a6 b6 19.Rad1 h6 (19...Qe8 20.Nd2+=) 20.Qc2 g5 21.Rd2 Ne8 22.Rfd1 (22.Rfd1 Nf6 23.Ra1=) 1–0. onur604 (2320) – blues_drifter (2030), lichess.org, 2020.

5.e3 Nd7 6.d4 Ngf6 7.de5 Ng4 8.Be2 0-0 (8...Nge5 9.Ne5 Ne5 10.Nd2=) 9.0-0 Nge5 10.Nc3 (10.Ne5 Ne5 11.Nc3 Be6=) 10...Nf3=+ 11.Bf3 Ne5 12.Bd5 (12.Be2 Be6 13.Nd5 c6 14.bc6 Bd5 15.Qd5 bc6=) 12...c6 13.Bb3 d5 14.a4 (14.Rb1 Bf5=+) 14...Qh4 (14...Bf5 15.Qe2=+) 15.f3 (15.Qe2 a6=+) 15...Nc4–/+ 16.Bc4 Qc4 (16...dc4?! 17.Qc1 Be5 18.f4=) 17.Qd2 f5 (better 17...Bf5!?–/+) 18.Nd1= f4 (18...Bh6 19.Be5=) 19.Re1 Bb2 (19...Qc5 20.Bg7 Kg7 21.Nf2=) 20.Nb2+= Qc5 21.Nd3 fe3 22.Re3 Qd4 (22...Qd6 23.bc6 bc6 24.Rae1+=) 23.c3+- Qg7 (23...Qb6!?+-) 24.Rae1 Bf5 25.Nb4 Qf6 26.Re7 Rf7 27.Rf7 Kf7 28.bc6 bc6 29.Nd5! Qd6?? (29...cd5 30.Qd5 Double attack) 30.Re7+- (30.Re7 Qe7 31.Ne7 Ke7 32.Qh6+-) 1–0. Massudy (2345) – Keyser007 (2305), lichess.org, 2020.

5.e3 Be6 6.Be2 Ne7 7.Ng5 0-0 8.Ne6 fe6 9.0-0 d5 10.Bg4 Nf5 (10...Qd6 11.Ba3 Qd7 12.e4+=) 11.e4+= de4 12.Nc3 h5 13.Bh3 Qd4 14.Ba3 (14.Qe2 Nd7+=) 14...Re8 (14...Rd8 15.Qe2+=) 15.Re1+/- Attacking the isolated pawn on e4 15...a6 16.Re4 Qd7 17.Ra4 Bh6 (17...e4!?+=) 18.Ne4+/- Kg7 19.Rb1 Qd5 20.g4 (20.Qf3!? Qd8+-) 20...hg4+/- 21.Qg4 Nd7 22.c4 (22.ba6 Nb6 23.c4 Qd3+/-) 22...Qd3+= 23.Rb3 Qc2 24.ba6 b6 (better 24...Ra6!? 25.Ra6 ba6+=) 25.Bf1+/- Bd2?? (better 25...Nf6 26.Nf6 Kf6+/-) 26.Bd3+- Qa2 27.Bf8!! Rf8 (27...Nf8 28.Ra2 Discovered attack; 27...Rf8 28.Ra2 Discovered attack; 27...Kf8 28.Ra2 Discovered attack) 28.Ra2 Bh6 (28...Bf4 29.a7+-) 29.h4 Nd4 (29...Kh8 30.Kh1 Rg8 31.h5+-) 30.h5 (30.Nc5 Rg8 31.Ne6 Kh8 32.Nd4 Nc5 33.Bg6 Nb3 34.Nb3 c6+-) 30...Nf3 (30...Kh8 31.hg6 Rf4+-) 31.Kh1 g5 32.Qe6 Nf6 33.Nf6 Rf6 34.Qd7 Kg8 35.Qd5 Kg7 36.Qa8 1-0. DEFFM – wedus, freechess.org, 2021.

5.e4 Nf6 6.Nc3 0-0 7.d4 (better is 7.Bc4=) 7...d5?? (better is 7...ed4 8.Nd4 Qe7=+) 8.de5+/– Ne4 9.Qd5 Qd5? (better is 9...Ng5 10.Ng5 Qg5+/–) 10.Nd5+- Nd7 11.Nc7 Rb8 12.Ba3 (12.Rd1 Ndc5+-) 12...Ndc5 13.Rd1 Bf5 14.Bc4 Nc3? 15.Bc5 Rfd8 16.Rd8 Rd8 17.0-0 Ne4 18.e6 fe6 19.Ne6 Be6 20.Be6 Kh8 21.Ba7 Nd2 22.Ng5 Re8 23.Rd1 h6 24.Nf7 Kh7 25.Bd5 g5 26.Bb7 Bf6 27.Bd5 Kg6 28.b6 Bd4 29.Nd6 Re7 30.Nc8 Rd7 31.Rd2 Rd5 32.Ne7 (32...Kf7 33.Nd5+-) 1–0. deepaktnj – alarconconsult, internet, 2007.

5.e4 Nf6 6.Nc3 a6 7.Bc4 (7.a4 ab5 8.ab5 Ra1 9.Qa1 Nbd7=) 7...ab5 8.Nb5 (8.Bb5!? c6 9.Bd3=) 8...Ne4–/+ 9.Qe2 Nf6 10.Ne5 0-0 (10...de5 11.Qe5 Kf8 12.Qc7 Qe8 13.Qe5 Qe5 14.Be5–/+) 11.Nf7=+ Rf7 12.Bf7 Kf7 13.Qc4 Be6 14.Qc7 Qc7 15.Nc7 Ra2 16.Ra2 Ba2 17.0-0 Be6 (17...Nc6 18.Ra1 Be6 19.Ne6 Ke6 20.Rb1=) 18.Ne6= Ke6 19.Re1 (19.Rb1 Nbd7=) 19...Kf7 (19...Kd7!?=) 20.Ba3+= Bf8 (20...Ne8 21.Rb1 Ke6 22.Rb7+=) 21.Rb1 d5 22.Rb7 Nbd7 23.Bf8 Kf8 24.c4 (24.d3 Ke7+=) 24...dc4= 25.Rc7 (better is 25.Rb4!?=) ½–½. Langguth,Wilhelm – Cuno,Thomas, corr ICCF Cup8/9 V071, 1990.

6.Bc4 0-0 7.0-0 c6 8.a4 d5 9.Bb3 (9.Be2 e4 10.Ne5 Qc7=) 9...e4=+ 10.Nd4 c5 11.Ne2 c4 12.Ba2 Bg4 13.h3 Qd6 14.Ba3 (14.hg4? Ng4 15.Nf4 Bb2 16.Qg4 Ba1-+) 14...Be2 15.Bd6 Bd1 16.Rd1 (16.Bf8 Bc2 17.Bg7 Kg7=) 16...Re8 17.Nc3 Re6 18.Ba3 Nbd7 19.d3 Nb6 (better 19...ed3 20.cd3 Rc8=) 20.a5+/- cd3 (20...Nbd7!? 21.dc4 Ree8+-) 21.cd3+- Rc8 (better 21...Nbd7 22.de4 Ne4 23.Ne4 Ba1 24.Bd5 Nf6 25.Bb7 Rb8+-) 22.ab6 Rc3 23.Bb4 (23.Bb4 Rd3 24.ba7 Rd1 25.Rd1+-) 1-0. onur604 (2320) - SauronREX (2265), Casual Rapid game, 2021.

7.Nc3 a6 8.Be2 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4.

7.Nc3 Nbd7 8.d4 a6 9.Be2 ed4 10.Nd4 Nc5 11.0-0 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 Nbd7 8.Be2 Nc5 9.0-0 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 e4 8.Nd4 c5 9.bc6 Nc6 10.Be2 Nd4 11.ed4 d5 12.Ba3 Re8 13.0-0.

7.Nc3 e4 8.Nd4 c5 9.bc6 Nc6 10.Be2 Nd4 11.ed4 Bd7 12.0-0 Qb6 13.Rb1.

7.Nc3 Qe7 8.Be2 Nbd7 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nc5 13.d4.

7.Nc3 Bf5 8.Be2 (8.h3 Nbd7 9.g4 Be6 10.g5 Nh5 11.Ne4 f5 12.gf6 Nhf6 13.Nc3) 8...a6 9.0-0 ab5 10.cb5 Nbd7 11.a4 b6 12.d4 Re8 13.Rc1.

7.Be2 a6 8.0-0 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Nb5 d5 13.N1a3.

7.Be2 a6 8.0-0 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Nb5 d5 13.d4.

7.Be2 a6 8.Nc3 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 bc6 12.f3 c5 13.Ndb5.

7.Be2 a6 8.Nc3 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4.

7.Be2 a6 8.d4 ed4 9.Nd4 ab5 10.cb5 c5 11.bc6 bc6 12.0-0 c5 13.Nb5.

7.Be2 a6 8.d4 ed4 9.Nd4 ab5 10.cb5 c5 11.bc6 bc6 12.Bf3 d5 13.Nc3.

7.Be2 e4 8.Nd4 c5 9.bc6 Nc6 10.0-0 Qb6 11.Bc3 a6 12.Qb3 Qc5 13.Na3.

7.Be2 e4 8.Nd4 c5 9.bc6 Nc6 10.Nc3 Nd4 11.ed4 d5 12.Qb3 Be6 13.0-0.

7.Be2 Bf5 8.0-0 a6 9.a4 ab5 10.cb5 Nbd7 11.Nc3 c6 12.d4 Qe7 13.a5.

7.Be2 Bf5 8.0-0 Nbd7 9.Nc3 a6 10.a4 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 Bf5 8.Nc3 a6 9.0-0 Nbd7 10.a4 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 Bf5 8.Nc3 Nbd7 9.0-0 a6 10.a4 ab5 11.cb5 b6 12.d4 Re8 13.de5.

7.Be2 Bf5 8.d4 Nbd7 9.0-0 Ne4 10.Nc3 Nc3 11.Bc3 a6 12.a4 ed4 13.Nd4.

7.Be2 Bf5 8.h3 Nbd7 9.Nc3 Nc5 10.0-0 Re8 11.d4 ed4 12.Nd4 Nfe4 13.Nd5.

8.0-0 c5 9.d4 (9.Qc2 Nb6 10.Nc3 Bf5 11.e4 Be6 12.d3 a5 13.Bc1) 9...ed4 (9...cd4 10.ed4 e4 11.Nfd2 b6 12.Nc3 Bb7 13.Qc2) 10.ed4 Nh5 (10...cd4 11.Nd4 Re8 12.Nc3 Nc5 13.Re1) 11.Qd2 Qf6 (11...Nb6 12.Nc3 Bg4 13.d5) 12.a4 (12.Nc3 Nb6 13.dc5) 12...Nf4 13.Ra2 (13.Nc3+=) 13...Qf5 14.g3 Ne2 15.Qe2 Nf6 16.dc5 Re8 17.Qd1 dc5 18.Bf6 Qf6 19.Nh4 Be6 20.Na3 Qc3 21.Qc2 Qe5 22.Nb1 Rad8 23.Nd2 Bh3 24.Ng2 Bh6 25.f4?? (better is 25.Nb3–/+) 25...Qd4-+ 26.Rf2 (26.Kh1 Re2 27.Nh4 Bf1-+) 26...Re2 27.Ne4 Rc2 (27...Qe4 28.Re2 Qd4 29.Ne3+/–; 27...Re4 28.Qc1 Qc4 29.Qc4 Rc4 30.Rfc2 Rc2 31.Rc2 Rd1 32.Kf2-+) 28.Rac2 Qe4 29.Rfe2 Rd1 30.Ne1 Re1 0–1. Glaeser,Hartmut (1675) – Kierzek,Mira (2030), Halle GER, 2011.

8.0-0 Nc5 9.Nc3 Bd7 10.d4 ed4 11.Nd4 Qe7 12.Qc2 Rfe8 13.Bf3.

8.0-0 Nc5 9.Nc3 Bd7 10.d4 ed4 11.Nd4 Qe7 12.Bf3 Rfe8 13.Qc2.

8.0-0 Re8 9.d4 (9.Nc3 Nc5 10.d4 ed4 11.Nd4 Bd7 12.Qc2 Qe7 13.Bf3) 9...Ne4 (9...ed4 10.Nd4 Nc5 11.Nc3 Bd7 12.Qc2 Qe7 13.Bf3) 10.Nbd2 (10.Nc3 Nc3 11.Bc3 e4 12.Nd2 Qg5 13.Kh1) 10...Nd2 11.Nd2 e4 (11...a6 12.ba6 Qe7 13.ab7) 12.Qc2 Qe7 (12...Qh4 13.g3) 13.a4 (13.h3=) 13...h5 14.Rfe1 Nf8 15.f3 ef3 16.Bf3 Ne6 17.a5 Rb8 18.Rac1 Bd7 19.Qd3 c5 20.Nb3 (20.Bc3 h4+=) 20...f5 (20...Ng5 21.e4+=) 21.Ba3 b6 22.Bd5 Kh7 23.dc5 dc5 24.g3 (24.e4!? Nc7 25.Qf1=) 24...Rbd8 25.Qc2 Ng5 26.ab6 ab6 27.Nd2 Be6 28.h4? (better is 28.Bc6!?=) 28...Bd5–/+ 29.cd5 Ne4 30.Ne4 Qe4 31.Qe4 Re4 32.Rcd1 Re5 33.d6 Rd7 34.Rd3 (34.Bb2 Re6 35.Bg7 Kg7-+) 34...Re6 35.Red1 Be5 36.Kf2 Red6 (36...Bd6?! 37.Bb2+=) 37.Rd6 Rd6 38.Rd6 Bd6 39.Kf3 Kg8 40.Bb2 Kf7 41.Bc3 (41.Bc1-+) 41...Ke6 42.Be1 Kd5 43.Bf2 Be5 44.Be1 c4 45.Ke2 Kc5 46.e4 Kb5 47.ef5 gf5 48.Ke3 (48.Bf2 Ka5-+) 48...Kc5 49.Kf3 b5 50.Bd2 (50.Bf2 Bd4 51.Be1 b4-+) 50...c3 51.Be1 0–1. Glaeser,Hartmut (1675) – Schulz,Wolfgang (2145), Halle GER, 2011.

8.Nc3 Nc5 9.0-0 a6 10.d4 ed4 11.Nd4 Bd7 12.Qc2 Re8 13.a4.

8.Nc3 Nc5 9.0-0 Bd7 10.d4 ed4 11.Nd4 Qe7 12.Bf3 Nce4 13.Qc2.

8.d4 a6 9.Nc3 ab5 10.cb5 ed4 11.Nd4 Nc5 12.0-0 d5 13.a4.

8.d4 ed4 9.Nd4 Nc5 10.0-0 Qe7 11.Nc3 Bd7 12.Qc2 Rfe8 13.Bf3.

7.Nc3 0-0 8.d4 ed4 9.Nd4 ab5 10.cb5 c5 11.bc6 bc6 12.Be2 c5 13.Ndb5.

7.Nc3 0-0 8.Be2 ab5 9.cb5 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 d5 13.a4.

7.Nc3 0-0 8.Be2 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4.

7.Nc3 ab5 8.cb5 0-0 9.Be2 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 d5 13.a4.

7.Nc3 ab5 8.cb5 0-0 9.Be2 e4 10.Nd4 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4.

7.Nc3 Nbd7 8.Be2 (8.d4 ab5 9.cb5 0-0 10.Be2 ed4 11.Nd4 d5 12.0-0 Nc5 13.a4; 8.a4 0-0 9.Be2 Nc5 10.0-0 Re8 11.d4 ed4 12.Nd4 ab5 13.cb5; 8.ba6 0-0 9.ab7 Bb7 10.Be2 Nc5 11.0-0 Qe7 12.d4 ed4 13.Nd4; 8.h3 0-0 9.Be2 Nc5 10.0-0 ab5 11.cb5 Re8 12.d4 ed4 13.Nd4) 8...ab5 9.cb5 0-0 10.0-0 Nc5 11.d4 ed4 12.Nd4 d5 13.a4.

7.c5 dc5 8.Be5 (8.Nc3 0-0 9.Ne5 Re8 10.Nf3 ab5 11.Bb5 Nc6 12.0-0 Bf5 13.h3; 8.Qa4 0-0 9.Nc3 Bf5 10.Ne5 Nbd7 11.Nc4 Ne4 12.Ne4 Be4 13.Bg7; 8.Ne5 0-0 9.Nc3 Re8 10.Nf3 ab5 11.Bb5 Nc6 12.0-0 Bf5 13.h3) 8...ab5 9.Bb5 Nbd7 10.Bb2 0-0 11.0-0 c6 12.Be2 b5 13.d4.

7.c5 e4 8.Ng5 d5 9.Nc3 0-0 10.Qb3 h6 11.Nh3 Nbd7 12.Qa3 Ne5 13.Nf4.

7.c5 e4 8.Ng5 d5 9.Nc3 0-0 10.d4 ab5 11.Bb5 h6 12.Nh3 Bh3 13.gh3.

7.d4 e4 8.Nfd2 ab5 9.cb5 0-0 10.Nc3 d5 11.Be2 Nbd7 12.Qb3 Nb6 13.0-0.

7.Be2 0-0 8.0-0 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Nb5 d5 13.N1a3.

7.Be2 0-0 8.0-0 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Nb5 Be6 13.N1c3.

7.Be2 0-0 8.Nc3 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4.

7.Be2 0-0 8.Nc3 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 bc6 12.f3 c5 13.Ndb5.

7.Be2 0-0 8.d4 ab5 9.cb5 ed4 10.Nd4 c5 11.bc6 bc6 12.Nc3 c5 13.Ndb5.

7.Be2 0-0 8.d4 ed4 9.Nd4 ab5 10.cb5 c5 11.bc6 bc6 12.Nc3 c5 13.Ndb5.

7.Be2 ab5 8.cb5 e4 9.Nd4 c5 10.bc6 bc6 11.Nc3 c5 12.Ndb5 0-0 13.d4.

7.Be2 ab5 8.cb5 e4 9.Nd4 c5 10.bc6 Nc6 11.Nb5 0-0 12.0-0 d5 13.N1a3.

7.Be2 Nbd7 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 Nbd7 8.0-0 ab5 9.cb5 0-0 10.Nc3 Nc5 11.d4 ed4 12.Nd4 d5 13.a4.

7.Be2 Nbd7 8.Nc3 0-0 9.0-0 Nc5 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 Nbd7 8.Nc3 ab5 9.cb5 0-0 10.0-0 Nc5 11.d4 ed4 12.Nd4 d5 13.a4.

7.Be2 Nbd7 8.d4 ab5 9.cb5 0-0 10.0-0 e4 11.Nfd2 Re8 12.Nc3 c5 13.bc6.

7.Be2 e4 8.Nd4 ab5 9.cb5 c5 10.bc6 bc6 11.Nc3 c5 12.Ndb5 0-0 13.d4.

7.Be2 e4 8.Nd4 ab5 9.cb5 c5 10.bc6 Nc6 11.0-0 0-0 12.Nb5 d5 13.N1a3.

7.Be2 e4 8.Ng5 0-0 9.Nc3 h6 10.Nh3 ab5 11.cb5 Bh3 12.gh3 Nbd7 13.Qc2.

7.Be2 Qe7 8.Nc3 (8.0-0 ab5 9.cb5 0-0 10.Nc3 e4 11.Nd4 c5 12.bc6 Nc6 13.Ncb5) 8...0-0 9.0-0 ab5 10.cb5 e4 11.Nd4 c5 12.bc6 Nc6 13.Ncb5.

7.Be2 Bf5 8.0-0 0-0 9.Nc3 ab5 10.cb5 Nbd7 11.a4 c6 12.d4 c5 13.de5.

7.Be2 Bf5 8.0-0 0-0 9.Nc3 Nbd7 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nc5 13.d4.

7.Be2 Bf5 8.a4 ab5 9.cb5 0-0 10.0-0 Nbd7 11.Nc3 b6 12.d4 Re8 13.de5.

7.Be2 Bf5 8.a4 Nbd7 9.Nc3 0-0 10.0-0 Re8 11.d4 ab5 12.ab5 Ra1 13.Qa1.

7.Be2 Bf5 8.Nc3 ab5 9.cb5 0-0 10.0-0 Nbd7 11.a4 b6 12.d4 Re8 13.Rc1.

7.Be2 Bf5 8.Nc3 ab5 9.cb5 0-0 10.0-0 Nbd7 11.a4 c6 12.d4 Qe7 13.a5.

7.Be2 Bf5 8.d4 Nbd7 9.ba6 Ra6 10.c5 Rc6 11.Bb5 e4 12.Nh4 Bg4 13.Qa4.

7.Nc3 0-0 8.d4 ed4 9.Nd4 Nc5 10.Be2 a6 11.0-0 ab5 12.cb5 d5 13.Nb3.

7.Nc3 0-0 8.Be2 Nc5 9.0-0 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 0-0 8.Be2 Nc5 9.0-0 Bd7 10.d4 ed4 11.Nd4 a6 12.a4 Re8 13.Qc2.

7.Nc3 a6 8.a4 0-0 9.Be2 Nc5 10.0-0 Re8 11.d4 ed4 12.Nd4 ab5 13.cb5.

7.Nc3 a6 8.ba6 0-0 9.ab7 Bb7 10.Be2 e4 11.Nd4 Ne5 12.0-0 Ba6 13.Qb3.

7.Nc3 a6 8.d4 0-0 9.Be2 ab5 10.cb5 ed4 11.Nd4 Nc5 12.0-0 Re8 13.a4.

7.Nc3 a6 8.d4 0-0 9.Be2 ed4 10.Nd4 Nc5 11.0-0 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 a6 8.Be2 0-0 9.0-0 Nc5 10.d4 ed4 11.Nd4 ab5 12.cb5 Re8 13.Qc2.

7.Nc3 a6 8.Be2 0-0 9.0-0 Nc5 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 Nc5 8.d4 ed4 9.Nd4 0-0 10.Be2 a6 11.0-0 Re8 12.a4 ab5 13.cb5.

7.Nc3 Nc5 8.Be2 0-0 9.0-0 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Nc3 Nc5 8.Be2 0-0 9.0-0 Bd7 10.d4 ed4 11.Nd4 Re8 12.Qc2 Qe7 13.Bf3.

7.Nc3 Qe7 8.d4 0-0 9.Be2 e4 10.Nd2 a6 11.a4 a5 12.g4 h6 13.h4.

7.Nc3 Qe7 8.d4 ed4 9.Nd4 Nc5 10.Be2 0-0 11.0-0 Bd7 12.Bf3 Nce4 13.Qc2.

7.Nc3 Qe7 8.Be2 0-0 9.0-0 a6 10.a4 e4 11.Nd4 Nc5 12.f3 Bd7 13.Qc2.

7.Nc3 Qe7 8.Be2 e4 9.Nd4 Nc5 10.0-0 0-0 11.Qc2 Bd7 12.f3 Rfe8 13.Nb3.

7.Nc3 Qe7 8.h4 0-0 9.h5 gh5 10.Qc2 Nc5 11.Be2 Bg4 12.Ng5 Be2 13.Ke2.

7.Nc3 Qe7 8.h4 Nc5 9.h5 Nh5 10.Nd5 Qd8 11.d4 ed4 12.Bd4 0-0 13.Bg7.

7.d4 A) 7...Qe7 8.Nc3 (8.Be2 0-0 9.Nc3 a6 10.Qc2 ab5 11.cb5 ed4 12.Nd4 Ne5 13.0-0) 8...0-0 9.Be2 a6 10.Qc2 ed4 11.Nd4 ab5 12.cb5 Ne5 13.0-0; B) 7...0-0 8.Be2 (8.Nc3 a6 9.Be2 ab5 10.cb5 ed4 11.Nd4 Re8 12.0-0 Nc5 13.a4) 8...ed4 9.Nd4 Re8 10.0-0 a6 11.Nc3 ab5 12.cb5 Nc5 13.a4; C) 7...ed4 8.Nd4 0-0 9.Be2 Re8 10.Nc3 Nc5 11.0-0 a6 12.a4 ab5 13.cb5; D) 7...e4 8.Nfd2 a6 9.ba6 Ra6 10.c5 Rc6 11.cd6 Rd6 12.Nc3 0-0 13.Bb5; E) 7...a5 8.Nc3 (8.Be2 ed4 9.ed4 0-0 10.Nc3 d5 11.0-0 Nb6 12.cd5 Nbd5 13.Ne5; 8.Nbd2 0-0 9.Be2 ed4 10.Nd4 Nc5 11.0-0 Bd7 12.N4b3 Bf5 13.Bf3; 8.h3 0-0 9.Nc3 ed4 10.Nd4 Nc5 11.Bd3 Bd7 12.0-0 Re8 13.Bc2) 8...0-0 9.Be2 ed4 10.ed4 Re8 11.0-0 Nb6 12.Qb3 Be6 13.Rfe1; F) 7...Rb8 8.Nc3 (8.Be2 ed4 9.ed4 0-0 10.0-0 Ne4 11.Nbd2 Ndf6 12.Bd3 Re8 13.Re1; 8.Nbd2 0-0 9.Be2 ed4 10.Nd4 Nc5 11.0-0 Bd7 12.Qc2 Qe7 13.h3) 8...0-0 9.Be2 ed4 10.Nd4 Nc5 11.0-0 Re8 12.Qc2 Bd7 13.h3; G) 7...a6 8.Be2 (8.Nc3 ab5 9.cb5 ed4 10.Nd4 0-0 11.Be2 Re8 12.a4 Nc5 13.0-0) 8...ab5 9.cb5 0-0 10.Nc3 ed4 11.Nd4 Nc5 12.0-0 Re8 13.a4.

7.Be2 0-0 8.0-0 Nc5 9.Nc3 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 0-0 8.0-0 Nc5 9.Nc3 Re8 10.d4 ed4 11.Nd4 a6 12.a4 ab5 13.cb5.

7.Be2 0-0 8.Nc3 Nc5 9.0-0 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 0-0 8.Nc3 Nc5 9.0-0 Re8 10.d4 ed4 11.Nd4 a6 12.a4 ab5 13.cb5.

7.Be2 0-0 8.d4 ed4 9.Nd4 Ne4 10.0-0 Qh4 11.Nc3 Ndf6 12.g3 Qh3 13.Ne4.

7.Be2 0-0 8.d4 ed4 9.Nd4 Ne5 10.Nc3 c5 11.bc6 bc6 12.0-0 Rb8 13.Ba3.

7.Be2 a5 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.Nd4 Bd7 12.Bf3 Re8 13.Nd5.

7.Be2 a5 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.Nd4 Re8 12.Bf3 Bd7 13.Nd5.

7.Be2 a5 8.Nc3 0-0 9.d4 ed4 10.Nd4 Nc5 11.0-0 Re8 12.Qc2 Bd7 13.Rad1.

7.Be2 a5 8.Nc3 0-0 9.d4 ed4 10.Nd4 Nc5 11.0-0 Re8 12.Bf3 Bd7 13.Nd5.

7.Be2 a5 8.d4 0-0 9.Nc3 ed4 10.Nd4 Nc5 11.0-0 Qe7 12.Bf3 a4 13.Ba3.

7.Be2 a5 8.d4 ed4 9.Nd4 0-0 10.Nc3 Nc5 11.0-0 Bd7 12.Bf3 Re8 13.Nd5.

7.Be2 a6 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 a6 8.0-0 ab5 9.cb5 0-0 10.Nc3 Nc5 11.a4 b6 12.d4 ed4 13.Nd4.

7.Be2 a6 8.a4 0-0 9.Nc3 Nc5 10.0-0 Re8 11.d4 ed4 12.Nd4 ab5 13.cb5.

7.Be2 a6 8.Nc3 0-0 9.0-0 ab5 10.cb5 Nc5 11.a4 b6 12.d4 ed4 13.Nd4.

7.Be2 a6 8.Nc3 0-0 9.0-0 Re8 10.d4 ed4 11.Nd4 Nc5 12.Qc2 ab5 13.cb5.

7.Be2 a6 8.d4 ab5 9.cb5 ed4 10.Nd4 0-0 11.Nc3 Re8 12.0-0 Nc5 13.a4.

7.Be2 Nc5 8.0-0 0-0 9.Nc3 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 Nc5 8.0-0 0-0 9.Nc3 Re8 10.d4 ed4 11.Nd4 a6 12.a4 ab5 13.cb5.

7.Be2 Nc5 8.Nc3 0-0 9.0-0 a6 10.d4 ed4 11.Nd4 Re8 12.Qc2 ab5 13.cb5.

7.Be2 Nc5 8.Nc3 0-0 9.0-0 Re8 10.d4 ed4 11.Nd4 a6 12.a4 ab5 13.cb5.

7.Be2 Nc5 8.d4 ed4 9.Nd4 a6 10.Nc3 0-0 11.0-0 ab5 12.cb5 Re8 13.a4.

7.Be2 c6 8.bc6 (8.Nc3 0-0 9.bc6 bc6 10.0-0 Rb8 11.Rb1 Qa5 12.Qa4 Qa4 13.Na4; 8.0-0 0-0 9.d4 ed4 10.ed4 cb5 11.cb5 Ne4 12.Nc3 Nc3 13.Bc3; 8.d4 ed4 9.ed4 0-0 10.Nc3 Re8 11.0-0 Nb6 12.Qb3 cb5 13.Qb5) 8...bc6 9.Nc3 Qa5 10.0-0 Rb8 11.Qc2 0-0 12.d4 ed4 13.Nd4.

7.Be2 e4 8.Nd4 a6 9.Nc3 0-0 10.0-0 Nc5 11.a4 Bd7 12.Qc2 ab5 13.cb5.

7.Be2 e4 8.Nd4 a6 9.Nc3 Nc5 10.0-0 0-0 11.Qc2 Qe7 12.a4 ab5 13.ab5.

7.Be2 Qe7 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.Qd4 Be6 12.Qh4 Bf5 13.Nd4.

7.Be2 Qe7 8.0-0 0-0 9.Nc3 Nc5 10.d4 Ncd7 11.a4 Re8 12.Qc2 a5 13.de5.

7.Be2 Qe7 8.Nc3 0-0 9.0-0 a6 10.a4 e4 11.Nd4 Nc5 12.f3 Bd7 13.Qc2.

7.Be2 Qe7 8.Nc3 0-0 9.0-0 e4 10.Nd4 Nc5 11.Qc2 a6 12.a4 ab5 13.ab5.

7.Be2 Qe7 8.d4 ed4 9.Qd4 Nc5 10.Nc3 Be6 11.0-0 0-0 12.Qh4 Bf5 13.Nd4.

7.Be2 Qe7 8.d4 ed4 9.Nd4 0-0 10.0-0 Nc5 11.Nc3 Bd7 12.Bf3 Nce4 13.Qc2.

7.Nd4 0-0 8.Na3 Nbd7 9.Be2 Ne5 10.0-0 Qe7 11.h3 Bd7 12.Qc2 Rab8 13.Rab1.

7.Nd4 0-0 8.Qc2 c5 9.Nb3 a6 10.Nc3 Bf5 11.h3 ab5 12.g4 b4 13.gf5.

7.Nd4 0-0 8.Nc3 c5 9.bc6 Nc6 10.Be2 Nd4 11.ed4 d5 12.Qb3 Be6 13.0-0.

7.Nd4 0-0 8.Nc3 c5 9.Nde2 a6 10.a4 Nbd7 11.Nf4 Ne5 12.Be2 g5 13.Nfd5.

7.Nd4 0-0 8.Be2 c5 9.bc6 Nc6 10.0-0 Qb6 11.Qc2 Ng4 12.Nc3 Bd4 13.Na4.

7.Nd4 0-0 8.Be2 c5 9.bc6 bc6 10.Nc3 c5 11.Nb3 Nc6 12.0-0 Rb8 13.Rb1.

7.Nd4 c5 8.Nb3 0-0 9.Nc3 Nbd7 10.d4 ed3 11.Bd3 Ne5 12.0-0 Be6 13.Qe2.

7.Nd4 c5 8.bc6 Nc6 9.Nc3 0-0 10.Be2 Nd4 11.ed4 d5 12.Qb3 Be6 13.0-0.

7.Nd4 c5 8.Ne2 0-0 9.Nbc3 a6 10.a4 d5 11.cd5 Nd5 12.Qb1 Nf6 13.Ng3.

7.Nd4 c5 8.Ne2 0-0 9.Nbc3 a6 10.a4 d5 11.Ng3 Re8 12.cd5 Nd5 13.Be2.

7.Ng5 0-0 8.d3 (8.d4 Bf5 9.Nc3 h6 10.Nh3 Nbd7 11.Be2 Bh3 12.gh3 Nb6 13.Qc2; 8.Nc3 h6 9.Nh3 Bh3 10.gh3 Nbd7 11.Qc2 Nc5 12.Rg1 Re8 13.d4) 8...ed3 9.Bd3 Nbd7 10.Nc3 Nc5 11.0-0 a6 12.h3 ab5 13.Nb5.

7.Nc3 0-0 8.Be2 a6 9.a4 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Nc3 0-0 8.Be2 e4 9.Nd4 c5 10.bc6 Nc6 11.0-0 Nd4 12.ed4 Bf5 13.Qa4.

7.Nc3 a6 8.Rc1 (8.Be2 0-0 9.a4 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2; 8.a4 0-0 9.Be2 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2; 8.h4 ab5 9.cb5 Bg4 10.Be2 0-0 11.0-0 Nbd7 12.d4 e4 13.Ng5; 8.Nd5 Nd5 9.cd5 0-0 10.h4 ab5 11.h5 Bd7 12.Qb3 Na6 13.h6; 8.Qc2 0-0 9.Be2 ab5 10.cb5 e4 11.Nd4 c5 12.bc6 Nc6 13.0-0; 8.b6 cb6 9.Qb3 0-0 10.Qb6 Bf5 11.Be2 Nbd7 12.Qa5 b5 13.cb5) 8...ab5 9.Nd5 Nd5 10.cd5 0-0 11.Bb5 Bf5 12.h4 c6 13.dc6.

7.Nc3 Nbd7 8.Be2 (8.h4 0-0 9.h5 gh5 10.Be2 Nc5 11.d4 Nce4 12.Qc2 Nc3 13.de5; 8.d4 0-0 9.Be2 a6 10.ba6 Ra6 11.0-0 e4 12.Nd2 Ra5 13.Qc2) 8...0-0 9.0-0 Nc5 10.d4 ed4 11.ed4 Nce4 12.Re1 Nc3 13.Bc3.

7.d4 ed4 8.Qd4 Nbd7 9.Be2 Nc5 10.Nc3 Be6 11.0-0 0-0 12.Qh4 Bd7 13.Nd4.

7.d4 ed4 8.Qd4 Be6 9.Nc3 Nbd7 10.Be2 0-0 11.0-0 Nc5 12.Qh4 Bf5 13.Nd4.

7.d4 ed4 8.Nd4 0-0 9.Nc3 c5 10.Nf3 Nbd7 11.Bd3 Ne5 12.Ne5 de5 13.0-0.

7.d4 Nbd7 8.Nc3 0-0 9.Be2 a6 10.ba6 b6 11.0-0 Ba6 12.Qd2 Bb7 13.Qc2.

7.d4 Nbd7 8.Nc3 0-0 9.Be2 a6 10.Qc2 ab5 11.cb5 ed4 12.Nd4 Ne5 13.0-0.

7.d4 Nbd7 8.Be2 a6 9.Nc3 0-0 10.ba6 Ra6 11.0-0 Re8 12.Qc2 c5 13.d5.

7.d4 Nbd7 8.Be2 a6 9.Nc3 0-0 10.Qc2 ab5 11.cb5 ed4 12.Nd4 Ne5 13.0-0.

7.d4 e4 8.Nfd2 0-0 9.Be2 c5 10.0-0 cd4 11.Bd4 Nbd7 12.Nc3 Nc5 13.Nb3.

7.d4 e4 8.Nfd2 0-0 9.Be2 c5 10.dc5 dc5 11.Nc3 Nbd7 12.0-0 Rd8 13.Qc2.

7.Be2 0-0 8.0-0 a6 9.Nc3 e4 10.Nd4 ab5 11.cb5 c5 12.bc6 Nc6 13.Ncb5.

7.Be2 0-0 8.0-0 Bf5 9.Nc3 Nbd7 10.d4 Nb6 11.h3 Ne4 12.Ne4 Be4 13.Qb3.

7.Be2 0-0 8.Nc3 a6 9.a4 Bf5 10.0-0 Nbd7 11.d4 ab5 12.ab5 Rfe8 13.h3.

7.Be2 0-0 8.Nc3 e4 9.Nd4 c5 10.bc6 Nc6 11.0-0 Nd4 12.ed4 Bf5 13.Qa4.

7.Be2 a6 8.0-0 ab5 9.cb5 0-0 10.Nc3 e4 11.Nd4 c5 12.bc6 Nc6 13.Ncb5.

7.Be2 a6 8.a4 ab5 9.cb5 0-0 10.Nc3 e4 11.Nd4 c5 12.bc6 Nc6 13.Ncb5.

7.Be2 a6 8.Nc3 0-0 9.a4 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 a6 8.Nc3 ab5 9.cb5 0-0 10.0-0 Nbd7 11.a4 b6 12.d4 Bb7 13.Qc2.

7.Be2 a6 8.d4 ab5 9.cb5 0-0 10.0-0 Bf5 11.de5 de5 12.Be5 Nbd7 13.Bb2.

7.Be2 a6 8.d4 ab5 9.cb5 0-0 10.Nc3 c5 11.0-0 e4 12.Nd2 cd4 13.ed4.

7.Be2 a6 8.Ng5 ab5 9.cb5 h6 10.Nf3 0-0 11.Nc3 e4 12.Nd4 c5 13.bc6.

7.Be2 a6 8.h4 ab5 9.cb5 0-0 10.Nc3 e4 11.Nd4 c5 12.bc6 Nc6 13.Ncb5.

7.Be2 a6 8.h4 ab5 9.cb5 e4 10.Nd4 c5 11.bc6 Nc6 12.h5 gh5 13.Qb3.

7.Be2 Nbd7 8.0-0 0-0 9.Nc3 a6 10.a4 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 Nbd7 8.0-0 0-0 9.Nc3 e4 10.Nd4 Nc5 11.f3 Bd7 12.Qc2 a6 13.a4.

7.Be2 Nbd7 8.Nc3 0-0 9.0-0 a6 10.a4 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 Nbd7 8.Nc3 0-0 9.0-0 e4 10.Nd4 Nc5 11.f3 Bd7 12.a4 a6 13.Qc2.

7.Be2 Nbd7 8.d4 a6 9.Nc3 0-0 10.Qc2 ab5 11.cb5 ed4 12.Nd4 Ne5 13.0-0.

7.Be2 e4 8.Nd4 c5 9.bc6 Nc6 10.0-0 0-0 11.Nc3 Nd4 12.ed4 Bf5 13.h3.

7.Be2 e4 8.Nd4 c5 9.bc6 Nc6 10.0-0 0-0 11.h3 Nd7 12.Na3 a6 13.Rb1.

7.Be2 Be6 8.0-0 Nbd7 9.Nc3 0-0 10.Ng5 a6 11.Ne6 Qe6 12.d4 ab5 13.Nb5.

7.Be2 Be6 8.0-0 Nbd7 9.Nc3 0-0 10.Ng5 Rfe8 11.Ne6 Qe6 12.Qc2 Nc5 13.f3.

7.Be2 Be6 8.Nc3 0-0 9.Ng5 Nbd7 10.0-0 Rfe8 11.Ne6 Qe6 12.Qc2 Nc5 13.f3.

7.Be2 Be6 8.Nc3 Nbd7 9.0-0 0-0 10.Ng5 Rfe8 11.Ne6 Qe6 12.Qc2 Nc5 13.Rae1.

7.Be2 Be6 8.d4 Nbd7 9.0-0 0-0 10.Nc3 Rfe8 11.Re1 e4 12.Nd2 d5 13.Qc2.

7.Be2 Be6 8.d4 Nbd7 9.0-0 0-0 10.Nc3 Rfe8 11.Re1 e4 12.Nd2 d5 13.cd5.

7.Be2 Be6 8.Ng5 0-0 9.0-0 Nbd7 10.Nc3 a6 11.d4 Bf5 12.e4 ed4 13.Qd4.

7.Be2 Be6 8.Ng5 0-0 9.Ne6 Qe6 10.Nc3 Nbd7 11.0-0 Nc5 12.Qc2 Rfe8 13.f3.

7.Be2 Be6 8.h4 0-0 9.Ng5 Bc8 10.Nc3 Nbd7 11.h5 h6 12.Nge4 Ne4 13.Ne4.

7.Be2 Be6 8.h4 Nbd7 9.Ng5 Nc5 10.Ne6 Qe6 11.0-0 0-0 12.Nc3 a6 13.Qc2.

7.Be2 Bf5 8.Nc3 (8.h3 Nbd7 9.Nc3 Nc5 10.d4 Nce4 11.Ne4 Ne4 12.0-0 0-0 13.de5) 8...Nbd7 9.0-0 0-0 10.d4 Nb6 11.h3 Ne4 12.Ne4 Be4 13.Qb3.

7.Nc3 0-0 8.Be2 a6 9.a4 ab5 10.ab5 Nbd7 11.0-0 Ra1 12.Qa1 Nc5 13.d4.

7.Nc3 0-0 8.Be2 a6 9.a4 Nbd7 10.0-0 Re8 11.d4 ab5 12.ab5 Ra1 13.Qa1.

7.Nc3 0-0 8.h3 Nbd7 9.Be2 Nc5 10.0-0 Qe7 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Nc3 0-0 8.h3 Nbd7 9.g4 Be6 10.g5 Nh5 11.Ne4 f5 12.gf6 Nhf6 13.Nc3.

7.Nc3 Nbd7 8.Be2 0-0 9.0-0 a6 10.a4 Nc5 11.d4 ed4 12.Nd4 Qd7 13.a5.

7.Nc3 Nbd7 8.Be2 a6 9.a4 0-0 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Nc3 Nbd7 8.h3 0-0 9.Be2 a6 10.0-0 ab5 11.cb5 Re8 12.a4 Nc5 13.a5.

7.d4 A) 7...Nbd7 8.Nc3 (8.Be2 a6 9.ba6 Ra6 10.c5 Rc6 11.Bb5 e4 12.Bc6 bc6 13.Nfd2; 8.Nbd2 0-0 9.Be2 a6 10.Nh4 Be4 11.0-0 ed4 12.Bd4 Qe7 13.f3; 8.de5 de5 9.Ne5 Nh5 10.Nd3 Bb2 11.Nb2 Qf6 12.Qd4 Qd4 13.ed4; 8.h3 0-0 9.g4 Be4 10.Nbd2 Re8 11.g5 Bf3 12.Qf3 Nh5 13.0-0-0) 8...0-0 9.Be2 a6 10.a4 Ne4 11.0-0 ed4 12.Nd4 Nc3 13.Bc3; B) 7...0-0 8.Be2 (8.Nc3 e4 9.Nd2 c5 10.dc5 dc5 11.Be2 Nbd7 12.h3 Ne5 13.g4; 8.de5 Ng4 9.Nc3 Ne5 10.Be2 Be6 11.Ne5 Be5 12.0-0 Nd7 13.Qc2) 8...Ne4 9.0-0 Nd7 10.Nc3 Nc3 11.Bc3 a6 12.a4 ed4 13.Nd4; C) 7...e4 8.Nfd2 a6 9.Be2 Qc8 10.Nc3 0-0 11.0-0 Re8 12.a4 c5 13.dc5.

7.Be2 0-0 8.0-0 Nbd7 9.Nc3 a6 10.a4 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Qc2.

7.Be2 0-0 8.Nc3 Nbd7 9.0-0 a6 10.a4 Re8 11.d4 ab5 12.ab5 Ra1 13.Qa1.

7.Be2 0-0 8.Nc3 Nbd7 9.0-0 a6 10.a4 Re8 11.d4 c5 12.d5 ab5 13.Nb5.

7.Be2 0-0 8.d4 Nbd7 9.0-0 Ne4 10.Nc3 Nc3 11.Bc3 a6 12.a4 ed4 13.Nd4.

7.Be2 0-0 8.d4 Nbd7 9.0-0 Ne4 10.Nc3 Nc3 11.Bc3 Qe7 12.a4 Rfd8 13.Qb3.

7.Be2 0-0 8.h3 Nbd7 9.Nc3 Nc5 10.0-0 Nfe4 11.Ne4 Be4 12.d3 Bf5 13.Qd2.

7.Be2 a6 8.0-0 ab5 9.cb5 0-0 10.Nc3 Nbd7 11.a4 c6 12.d4 Re8 13.Qb3.

7.Be2 a6 8.0-0 ab5 9.cb5 Nbd7 10.Nc3 0-0 11.a4 b6 12.d4 Re8 13.Rc1.

7.Be2 a6 8.a4 ab5 9.cb5 0-0 10.0-0 c6 11.Nc3 Nbd7 12.d4 Re8 13.Qb3.

7.Be2 a6 8.a4 Nbd7 9.Nc3 0-0 10.0-0 Re8 11.d4 ab5 12.ab5 Ra1 13.Qa1.

7.Be2 a6 8.Nc3 ab5 9.cb5 0-0 10.a4 Nbd7 11.0-0 b6 12.d4 Re8 13.de5.

7.Be2 a6 8.Nc3 ab5 9.cb5 Nbd7 10.0-0 0-0 11.a4 c6 12.d4 c5 13.de5.

7.Be2 a6 8.d4 Nbd7 9.0-0 ab5 10.cb5 0-0 11.Nc3 c5 12.bc6 bc6 13.de5.

7.Be2 a6 8.d4 Nbd7 9.ba6 Ra6 10.c5 Rc6 11.Bb5 e4 12.Nh4 Bg4 13.Qa4.

7.Be2 Nbd7 8.0-0 a6 9.Nc3 ab5 10.cb5 0-0 11.a4 Ra5 12.Ba3 Nb6 13.Qb3.

7.Be2 Nbd7 8.0-0 a6 9.Nc3 ab5 10.cb5 0-0 11.a4 c6 12.d4 Re8 13.Qb3.

7.Be2 Nbd7 8.Nc3 a6 9.a4 0-0 10.0-0 ab5 11.ab5 Ra1 12.Qa1 Re8 13.Qa7.

7.Be2 Nbd7 8.Nc3 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nc5 13.d4.

7.Be2 Nbd7 8.h3 a6 9.0-0 ab5 10.cb5 Nc5 11.Nc3 Nd3 12.Qc2 Nf4 13.Qd1.

7.h3 0-0 8.Nc3 Nbd7 9.Be2 Nc5 10.0-0 Nfe4 11.Ne4 Be4 12.d3 Bf5 13.Qd2.

7.h3 0-0 8.Be2 a6 9.Nc3 ab5 10.cb5 Nbd7 11.0-0 Re8 12.a4 Nc5 13.a5.

7.h3 0-0 8.Be2 Nbd7 9.Nc3 Nc5 10.0-0 Nfe4 11.Ne4 Be4 12.d3 Bf5 13.Qd2.

7.h3 0-0 8.g4 Be6 9.Nc3 Nbd7 10.Qc2 h6 11.Be2 Nb6 12.Qb3 Qe7 13.0-0.

7.h3 Nbd7 8.Nc3 0-0 9.Be2 a6 10.0-0 ab5 11.cb5 Ne4 12.Ne4 Be4 13.d3.

7.h3 Nbd7 8.d4 0-0 9.Nc3 Qe7 10.g4 ed4 11.Nd4 Be6 12.g5 Nh5 13.h4.

7.h3 Nbd7 8.Be2 a6 9.0-0 ab5 10.cb5 Nc5 11.Nc3 Nd3 12.Qc2 Nb2 13.Qb2.

7.h3 Nbd7 8.Be2 Nc5 9.0-0 0-0 10.Nc3 Nfe4 11.Ne4 Be4 12.d3 Bf5 13.Qd2.

7.h3 Nbd7 8.g4 Be6 9.Qc2 a6 10.Nc3 ab5 11.cb5 Nd5 12.Be2 0-0 13.0-0.

4.Bb2 d6 5.Nf3=.

4.Bb2 Ne7 5.Nf3 0-0 6.Be5+/- f6 7.Bb2 d5 8.c4 c6 9.Be2 Be6 10.cd5 Nd5 11.0-0 Nb6 (11...Qd7 12.Nd4+/-) 12.Nd4 Bf7 13.a4 cb5 14.ab5 a6 15.Qc2 N8d7? (better 15...f5!?+/-) 16.ba6+- ba6 (16...Qb8 17.Rc1+-) 17.Nc6 (17.Ra6?! Rc8 18.Nc3 f5+-; 17.Ba6?! Ne5+-) 17...Qe8 18.Ba3 (18.Ra6?! Ra6 19.Ba6 Bd5+-; 18.Ba6?! Bd5+-) 18...Rc8 (18...f5 19.d4+-) 19.Bf8 (19.Ba6 Rc6 20.Qc6 Bd5+-) 19...Qf8 (19...Nf8 20.Rc1 Bd5 21.Bf3+-) 20.Ba6 f5 21.Bc8 Ba1 22.Bd7 Nd7 23.Nc3 Bc3 24.Qc3 Qd6 25.Ra1 h5 (25...Bd5 26.Ra8 Nf8 27.Ra7+-) 26.Ra8 Nf8 27.Rd8 Qc7 (27...Qe6+-) 28.Qf6 Qb7 29.Ne7 Kh7 (29...Qe7 30.Qe7 Kh7 31.Qf7 Kh6 32.Qf8 Kg5 33.Qe7 Kg4 34.h3) 30.Qf7 Kh6 31.Ng8 Kg5 32.Qf6 Kg4 33.Nh6 (33.h3) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Bb2 Nh6 5.Nf3+= d6 6.Nc3 Be6 7.h3 (7.d4 ed4 8.Nd4 Nd7=) 7...f5 (7...Nd7 8.h4=) 8.d4+= ed4 (8...Nd7 9.d5 Bf7 10.Bc4+=) 9.Nd4+- Bf7 10.Qf3 Qc8 (10...d5 11.Be2+-) 11.Nd5 (better 11.g3!?+-) 11...Nd7+= 12.c4 Ne5 13.Qd1 Qd8 (13...c6 14.bc6 bc6 15.Qa4=) 14.Be2+= 0-0 15.0-0 Kh8 (15...c5 16.Nb3+-) 16.f4 Nd7 17.Qd2 Nc5?? (better 17...Re8+-) 18.Nc6!+- bc6 (18...bc6 19.Bg7 Double attack (19.Bg7 Decoy)) 19.Bg7 Kg8 (19...Kg7 20.Qd4 Kg8 21.Nf6 Qf6 22.Qf6+-) 20.Bf6 (20.Bh6?! cd5 21.Qb2 d4 22.Bf8 Kf8 23.ed4 Qf6+-) 20...Ne4 21.Qb2 (21.Bd8?! Nd2 22.Ne7 Kg7 23.Bc7 Nf1 24.Kf1 cb5 25.cb5 Ng8+-) 21...cd5 22.Bd8 Rfd8 23.cd5 Bd5 24.Qd4 (24.Qd4 Bb7 25.Qc4 Nf7 26.Qc7+-) 1–0. Silent Move (2115) – PBonner44 (1845), redhotpawn.com, 2012.

3.Na3 ab4 4.Nb5? c6 5.e4 cb5 6.Qf3 d5! 7.ed5 Nf6 8.Bb5 Bd7 9.Bc4 Qc7 10.Bb3 Na6 11.d4 e4 12.Qe2 Qc3 13.Kf1 Qa1 14.Qd1 Bb5 15.Ke1 Nc7 16.Ne2 Ra2 17.Ba2 Qa2 18.d6 Bd6 19.Ng3 b3 20.Bg5 b2 (21.Nf5 Bb4 22.Bd2 Bd2 23.Kd2 b1Q 24.Qc2 Qac2 25.Ke3 Ncd5#; 20...Bb4 21.Bd2 Bd2 22.Qd2 b2 23.Qc2 b1Q 24.Qb1 Qb1 25.Kd2 Qb2 26.Kd1 Ba4 27.Ke1 Qc1 28.Ke2 Bb5#) 0–1. mdf – pierre, slowchess.com, 2006.

3.Qa4 Ra6 4.e4 Ra8 5.Nf3 Bd6 6.Bc4 Nf6 7.d3 0-0 8.0-0 c6 9.b5 cb5 10.Qb5 Nc6 11.Bg5 h6 12.Bh4 b6 13.Bf6 Qf6 14.Qb6 Rb8 15.Qe3 Bc7 16.Rd1 Bb6 17.d4 d6 18.Rd3 Bg4 19.Nbd2 Rfc8 20.Rb1 Bf3 21.Qf3 ed4 22.Qf6 gf6 23.cd4 Bd4 24.Rb8 Rb8 25.Bd5 1–0. guest895 – guest1987, ICC, 2003.

3.Qa4 c6 4.b5 c5 5.g3 b6 6.Bg2 d6?? (better is 6...d5+=) 7.Bc6 (better is 7.Ba8 Be6 8.c4+-) 7...Nc6+= 8.bc6 Qc7 9.Na3 Ne7 (better is 9...Ba6+=) 10.Nb5+/– Qd8?? (better is 10...Qc6 11.Nc7 Kd7 12.Qc6 Kc6 13.Na8 Bb7 14.Nb6 Kb6 15.Rb1 Kc7+/–) 11.c7+- Qd7 12.Nd6 1–0. maddoxdb – gfd622, gameknot.com, 2012. (=1.c3 e5 2.b4 a5)

3.Qa4 Nc6 4.e3 Nf6 5.b5 Ne7 6.Bc4 Ned5 7.Ba3 (7.Bd5!? Nd5 8.Qe4=) 7...Ba3 8.Qa3 d6 9.f3 Be6 10.e4 Nb6 (better is 10...Nb4! 11.Bb3 Nd3 12.Ke2 Nf4 13.Kf1 d5–/+) 11.Be6+= fe6 12.Ne2 Nc4 13.Qb3 d5 14.0-0 0-0 15.Ng3 a4 16.Qc2 (16.Qb4+=) 16...d4 (16...Qd7!?-+) 17.a3 (17.Qd3 Nb6 18.Ne2=) 17...d3 (better is 17...Qd7 18.Qd3 Qb5 19.cd4 Rad8–/+) 18.Qa2+= Nd6 19.Qe6 Kh8 20.Nf5 (20.Qe5!? Re8 21.Qd4 Nb5 22.Qc4+/–) 20...Nf5 21.Qf5 Qe7 22.c4 Qc5 23.Kh1 Nd5?? (better is 23...g6 24.Qg5 Ne4–/+) 24.cd5 (better is 24.Qe5 Qc4 25.Qd5 Qd5 26.ed5 Kg8+-) 24...Qc2?? (better is 24...Rf5 25.ef5 Qc2-+) 25.Qe5+- Rae8 26.Qc3 Qc3 (26...Re4 27.Qc2 dc2+-) 27.Nc3 b6 (27...Ra8 28.Rae1+-) 28.Na4 c5 29.Nb6 Rf6 30.Na4 c4 31.Rab1 Rff8 32.Nb6 Rb8 33.Nc4 Rbc8 34.Rfc1 Rb8 35.Ne5 Ra8 36.Rc3 Rfe8 37.Nd3 h6 38.b6 Rab8 39.Rc7 1–0. maddoxdb – dariopa, gameknot.com, 2012. (=1.c3 e5 2.b4 a5)

3.Qa4 Nf6 4.Nf3 e4 5.Nd4 Nc6 6.b5 Nd4 7.cd4=+ d5 8.Nc3 Qd6 9.g3 Be7 10.Bg2 0-0 11.0-0 Bg4 12.d3 ed3 13.ed3 Rfe8 14.Bf4 Qd7 15.Be5 c6 16.Rac1 Bf5 17.Qb3 Bd3 18.bc6 bc6 19.Nd5 Bf1 20.Nb6 a4 21.Qb1 Qd8 22.Bf1+= Nd5 23.Na8 Qa8 24.Qc2 f6 25.Bf4 Ba3 26.Rb1 Nf4 27.gf4 Rd8 28.Bd3 g6 29.Bg6 hg6 30.Qg6 Kf8 31.Qf6 Kg8 32.Qe6 Kg7 33.f5 Rg8?? 34.Kh1+- Kh7 35.Qe4 Kg7 36.Qe5 Kh7 37.f6 Kg6 38.Qe6 (38…Kh5 39.f7+-) 1–0. pcmvr (2815) – mburden (2535), net–chess.com, 2007.

3.ba5 Ra5 4.d4 ed4 5.cd4 Nc6 6.Bd2 Ra8 7.d5 Nb4 8.Nc3 Nf6 9.Bg5 Bc5 10.Nf3 h6 11.Bc1 d6 12.a3 Bf5 13.ab4 Bf2 14.Kf2 Ra1 15.Qd2 Ng4 16.Kg1 Qe7 17.Bb2 Ra8 18.e4 Be4 19.Ne4 Qe4 20.Bg7 Rg8 21.Bd4 (21.Bh6? Nh6 22.Ne1 Ng4-+) 21...c5?? (Better is 21...Ra3 22.h3 Ne3+/–) 22.dc6 bc6 23.Bd3 Qd5 24.Qe1 Kd7 25.Be4 Qc4? 26.h3 Nf6 27.Bf5 Kc7 28.Qe7 Kb8 29.Qd6 Kb7 30.Qe7 Ka6 31.Kh2 (31...Rg2 32.Kg2 Qa2 33.Kg3 Nh5 34.Kh4+-) 1–0. orane (2200) – acac (2055), Live Game Caissa's Web, 2004.

3.ba5 Nc6 4.a6 (4.d4 d5=+) 4...Ra6 5.e4 (5.d4 d5=+) 5...Ra8 6.Bb5 Nf6 (6...Ra5 7.a4=+) 7.d3 d6 (7...Ra5 8.a4=+) 8.Nf3 Bd7 (8...Be7 9.0-0=+) 9.Nbd2 Be7 10.0-0 0-0 11.Nc4 (11.Re1 Ng4=) 11...Na5 (11...Be6!? 12.Ne3 Ra2 13.Ra2 Ba2=) 12.Bd7+= Qd7 13.Ne3 g6 (13...Qe6 14.c4+=) 14.Rb1 b6 15.Qc2 Ra7 (15...Nb7 16.a3=) 16.a3 (16.c4 Nb7+=) 16...Rfa8 17.Rd1 (17.Re1 Qe6+=) 17...Qe6 (17...Nb7 18.d4 Qa4 19.Qe2=) 18.Ng5 Qc8 19.d4 ed4 (19...Nb7 20.Nf3+=) 20.cd4+/– Ng4 (20...c5!?+/–) 21.Nd5+– Bd8 22.Nf3 Nf6 23.Nf4 Qd7 24.e5 Ne8 25.Re1 Ng7 26.d5 de5 27.Ne5 Qf5 28.Nfd3 Bf6 (28...f6 29.Nc6 Nc6 30.dc6+/–) 29.g4 (29.Bb2 Rd8 30.Re3 Rd6+/–) 29...Qc8+= 30.g5 Be5 31.Ne5 (< 31.Re5 Qg4 32.Kf1 Nc4–/+) 31...Qf5 32.Re4 Nb7 (32...Ne8!?+/–) 33.Nc6+– Nc5?? (better is 33...Kf8 34.Ne7 Qh3+/–) 34.Ne7 1–0. Trkn – guest6567, ICC, 2004.

3.Bb2 d5 4.g3 Nf6 5.Bg2 c6 6.d3 ab4 7.cb4 Bb4 8.Nd2 Qe7 9.e3 Bf5 10.d4 e4 11.Ne2 Nbd7 12.0-0 h5 13.Qb3?? (better is 13.h3-+) 13...Bd2 14.Qb7 (14.Rfd1 Bb4-+) 14...Rb8 15.Qc6 Rb2 16.Qa8 Rb8 17.Qc6 0-0 18.Nf4 Rfc8 19.Qa6 h4 20.Rfd1 Bc3 21.Bf1 (21.Rdc1 hg3 22.hg3 Ra8-+) 21...Ba1 22.Ra1 g5 23.Ne2 Bg4 24.Nc1 Bf3 25.Nb3 Ng4 26.Qa5 (26.h3 Ngf6 27.gh4 gh4-+) 26...hg3 27.hg3 Ne3 (27...Qf6 28.Bh3 Qh6 29.Kf1 Ne3 30.fe3 Qh3 31.Ke1 Qg3 32.Kf1 Qg2 33.Ke1 Qe2) 28.fe3 Qd6 29.Kh2 (29.Qe1 Rc2 30.Nd2-+) 29...Rb3! 30.ab3 Rc2 31.Kh3 (31.Qd2 Rd2 32.Be2 Qh6 33.Kg1 Qh1 34.Kf2 Re2) 31...Qh6 0–1. baudrey – LetMeWin, Live Game Caissa's Web, 2004.

3.Bb2 Nf6 4.a3 d5 5.b5 Bd6 6.c4 d4 7.e3 c5 8.d3 0-0 9.Nf3 b6 (9...Re8 10.Be2=+) 10.g3 Ra7 11.Bg2 de3 12.fe3 e4 13.de4 Ne4 14.Qc2 Bf5?? (better 14...Re8=) 15.Nh4+- Qh4?? (better 15...Ng3 16.Nf5 Nh1 17.Bg7 Ng3 18.hg3 Bg3 19.Ng3 Kg7 20.Nf5 Kh8+-) 16.gh4 Ng3 (16...Re7 17.0-0 g6 18.Qe2+-) 17.Qf2 (17.hg3?! Bc2 18.Kf2 Nd7=) 17...Nh1 18.Qf5 Re7 (18...Nd7 19.Qg5 g6 20.Bh1+-) 19.Be4 g6 (19...Re4 20.Qe4 Rd8+-) 20.Qf6 Be5 21.Be5 (21.Be5 Re5 22.Qe5+-; 21.Bh1?! Bf6 22.Bf6 Re3 23.Kf2 Rfe8+=) 1-0. PERIERA – Kinnmu, internet, 2022.

3.b5 a4 4.e4 Nf6=+ 5.f3 Bc5 (6.d4 ed4 7.cd4 Bb4 8.Bd2 Bd2 9.Nd2 d5=; 5...d5!?=+). RTitov – ball, internet, 2006.

3.b5 Bc5 4.f3 Qh4 5.g3 Qf6 6.Bb2 Ne7 7.e3 c6 8.bc6 dc6 9.d4 Bb6 10.c4 ed4 11.ed4 a4 12.Nd2 c5 (better is 12...Bd4 13.Bd4 Qd4–/+) 13.Ne4= Qc6 14.dc5 Bc7?? (better is 14...Ba5 15.Kf2 0-0=) 15.Bg7+- Rg8 (15...Ng6+-) 16.Qd4 (better is 16.Nf6 Qf6 17.Bf6+-) 16...f5? (better is 16...Qe6 17.0-0-0 Nd7+-) 17.Nf6 Kf7 18.Nh5?? (better is 18.Ng8 Kg8 19.0-0-0+-) 18...b5?? (better is 18...Nd7=) 19.cb5+- Qg6 20.Bc4 Ke8 (20...Be6 21.0-0-0 Rd8 22.Be6 Qe6+-) 21.Nf6 Qf6 22.Bf6 Rg6 23.Bd5 (23.Be7 Be6 24.Be6 Re6 25.Kf2 Nd7 26.Qh8 Ke7 27.Qa8 Nc5+-) 23...Ra5 (23...Nd5 24.Qd5 Ra5 25.0-0-0+-) 24.b6 (better is 24.Be7 Be6 25.Bd8 Bd8 26.Qh8 Rg8 27.Qe5+-) 24...Kd7 (24...Nd5 25.Qd5 Rf6 26.bc7 Nd7 27.Qg8 Nf8+-) 25.bc7 Nbc6 26.Bc6 Kc6 27.Qd6 Kb5 28.Qe7 Bb7 29.Rb1 Kc6 30.Qd6 1–0. lisssisss – bagboy, gameknot.com, 2012. (=1.c3 e5 2.b4 a5)

3.b5 Nf6 4.a4 d5 5.d4 e4 6.e3 Bd6 7.f3 0-0 8.c4 Bb4 9.Bd2 ef3 10.Nf3 Be6 11.cd5=+ (11...Bd5 12.Bd3=+). hasant (1915) – yannigator (2080), net–chess.com, 2008.

3.d3 Qf6 4.f3?? ab4-+ 5.e3 bc3 6.Nc3–/+ Qc6 7.Bb2 Qb6-+ 8.Qc1 Na6 9.Nge2 d5 10.g3?? d4 11.h3?? de3 12.Rh2?? Nb4 13.Qd1 Qa5 14.h4 Be6 15.a3 Bd6 16.h5 Nd5 17.Bc1 Nc3 18.Qd2 ed2 19.Bd2 Bb4! 20.f4 Bg4 21.Ra2 Be2 22.Be2 ef4 23.gf4 Na2 24.ab4 Nb4 25.Bd1 Nd3 26.Kf1 Qf5 27.Rf2 Nf2 28.Kf2 Nf6 29.Be2 Nh5 30.Bf3 Nf4 31.Kg3 Ra3 32.Kf2 Nh3 33.Ke2 Qf3 34.Ke1 Ra1 35.Bc1 Rc1 36.Kd2 Qc3 37.Ke2 Rc2 38.Kf1 Qa1 (38...Rf2#) 0–1. soraya – meredin (1785), net–chess.com, 2007.

3.e4 ab4 4.Qf3 Nc6 5.Bc4 Nf6 6.g4 Na5-+ 7.d3 b5! 8.Bb5 Nb3!! 9.ab3 Ra1 10.Nd2 Rc1 11.Ke2 bc3 12.Nc4 Rb1 13.Ne5 c2 14.Nh3 Ba3 15.g5 Rh1 16.gf6 c1Q 17.Qh1 Qh1 18.Ng5 Qf6 19.Ngf7 Bb4 20.Nh8 Qe1# 0–1. mdf (1805) – mburden (2535), net–chess.com, 2006.

4.d3 Na6 5.ba5 Nc5 6.Qc2 Ra5 7.Nf3 e4 8.de4 Bb7 9.e5 Be4 10.Qd1 Ne7 11.Nbd2 Bc6 12.e3 Ng6 13.Nc4 Ra4 14.Ba3 b5=+ 15.Nd4 Rc4–/+ 16.Nc6 dc6 17.Qd8 Kd8 18.Bc4 bc4 19.Bc5 Bc5 20.a4 Ne5 21.Ke2 Ke7 22.a5 Rb8 23.Rhb1=+ Rb5 24.a6 Ba7–/+ 25.h4 Nd3 26.h5 Nc5 27.Rb4=+ Rb4 28.cb4 Nd3 29.Ra4 Kf6 30.f3= Kg5 31.Ra5 f5 32.g3 Nb4–/+ 33.g4 c5 34.gf5=+ Kf5 35.Rb5= Nc6 36.Rb1 Kg5 37.Rg1 Kh6 38.Kd2 Bb6 39.Rh1 Ba5 40.Ke2 c3 41.Ra1 Bb6 42.Kd3 Kh5 43.Kc3 Kg5 44.Kc4 Kf5 45.Rh1 h6 46.Rh5 Ke6–/+ 47.f4 Nb4 48.Kb5 Na6!-+ 49.Ka6 c4 50.e4? c3 51.Rh2 Be3 52.Rc2 Bd2 53.Kb5 h5 54.Kc4 h4 (55.f5 Ke5-+) 0–1. mburden (2535) – pierred (2420), net–chess.com, 2007.

4.d3 Na6 5.ba5= Nc5 6.Qc2 Ra5 7.Nf3 e4 8.de4=+ Bb7 9.e5= Be4 10.Qd1 Ne7 11.Nbd2 Nd5 12.Bb2 Qa8 13.g3 Bg6 14.Qc1 Ra2 15.Bg2 Ra1 16.Ba1 Be7 17.Nd4 Qa2 18.h4 f6 19.h5 Bf7 20.h6 fe5 21.hg7 Rg8 22.Nc2 Bg5 23.Qb2 Qb2 24.Bb2 Ne7 25.Nb4 Rg7 26.c4 d6 27.Nd5 Kd8 28.Ba3 Kd7 29.e3 Na4 30.Nf3 Nd5 31.Ng5= Nf6 32.Nf7 Rf7 33.Rh6 Nc3 34.f3 Kd8 35.e4 Nd7=+ 36.Bc1 Rg7 37.Rh3 Nc5 38.Be3 Nb3 39.g4 Na4 40.Bh6 Rg6 41.Be3= Na5 42.c5 Nc5 43.Rh7 Nc4 44.Bc5 dc5 45.Rh5 Re6 46.g5 Rg6 47.Rh8 Ke7 48.Rh7 Ke8 49.Bf1 Ne3 50.Bb5 c6–/+ 51.Rh6 Kf7 52.Bc6 Kg7 53.Kd2 Nc4 54.Kd3 Na5 55.Bd5 Rh6 56.gh6 Kh6 57.f4 ef4 58.e5 Kg5 59.Ke4 b5 60.e6 Kf6 61.Kf4 Nc4 62.Ke4 Ke7 63.Kd3 Nb6 64.Ba2 Na8 65.Ke4 Kd6 66.e7? Nc7 67.Bb1 Ke7 68.Ke5 Kd7 69.Bf5 Kc6 70.Ke4 Ne8 71.Kd3 b4 0–1. pcmvr (2815) – pierred (2420), net–chess.com, 2007.

4.Nf3 e4 5.Ne5 Qg5=.

4.g4? Bb7!? 5.Nf3 e4 -+.

4.g4? Nc6?? 5.Bg2 (Better is 5.b5 Na7 6.Bg2=) 5...Bb7?? (5...b5 6.Qb5 Ba6 7.Qd5 ab4 8.a3–/+) 6.h4?? (Better is 6.b5 Nge7 7.bc6 Bc6 8.Bc6 Nc6 9.Nf3+-) 6...ab4-+ 7.Qb5 Ra5 8.Qc4 Rc5 9.Qe4? Na5 10.Qe3 Bg2 11.d4 Nc4 12.Qd3 e4 13.Qc2 Bh1 14.dc5 Bc5 15.e3 Qh4 16.Nd2 Nd2 17.Qd2 Qh2 18.cb4 Qg1 19.Ke2 Bf3# 0–1. kleanitt – sega, Live Game Caissa's Web, 2004.

4.d4 ed4 5.cd4 Bb4 6.Bd2 Ba5 7.Ba5 Ra5 8.e3 Nf6 9.Be2 0-0 10.Nf3 Ne4 11.0-0 Qd6 12.Nbd2 (12.Qb3 Nd7=) 12...Nc3=+ 13.Qc2?? (Better is 13.Qe1=+) 13...Ne2-+ 14.Kh1 Qc6 15.Qc6 Nc6 16.Rfe1 Nc3 17.Nb3 Ra2 18.Ra2 Na2 19.Ra1 Nab4 20.Na5 Nc2 21.Ra2 N6b4 22.Ra4 b5 23.Rb4 Nb4 24.Ne5 f6 25.Nec6 Nc6 26.Nc6 Bb7 27.Nb4 Ra8 28.g4 c5! 29.dc5 d4 30.Kg1 Ra1# 0–1. Africanlion – ajop (2785), ICC, 2003.

4.d4 e4 5.e3 Nf6 6.Nd2 Ra5 7.Nb3 Ra8 8.Bb5 c6 9.Be2 Bd6 10.c4 dc4 11.Bc4 Bg4 12.f3 Bf5 13.g4 Bd7 14.g5 Nd5 15.Bd5 cd5 16.fe4 de4 17.Qh5 Qe7 18.Ne2 Ba4 19.Bb2 Bb4 20.Nd2 Ra5 21.h4 g6 22.Qh6= f6 23.Bc3 fg5? 24.Bb4+- Qb4 25.Qg7 Qf8 26.Qb7 Nc6 27.hg5 Qb4 28.Qg7 Qf8 29.Qf8 Kf8 30.Nc3 Bc2 31.Nde4 Kg7 32.a4 Rb8 33.Nc5 Rb2 34.Ne6 Kg8 35.Rh2 Nb4 36.Nc5 Kh8 37.Rd2 Kg8 38.Ke2 Nc6 39.Nd5 Rb1 40.Rb1 Bb1 41.Rb2 Bf5 42.Nf6 Kf8 43.Rb6 Ne7 44.e4 Bh3 45.Nh7 Kf7 46.Nf6 Ra7 47.e5 Bg2 48.e6 Kg7 49.Ke3 Ra8 50.Kd3 Bc6 51.Rb4 Bf3 52.Nce4 Kf8 53.Rb7 Ra4 54.Nh7 Kg8 55.Re7 Be2 56.Kc3 Kh8 57.Nhf6 Ra3 58.Kb4 Rd3 59.Rh7# 1–0. Bestia_03g – GNUChess_414, computer chess game, 2000.

4.d4 e4 5.e3 Nf6 6.Nd2 Ra5 7.Nb3 Ra8 8.Bb5 c6 9.Be2 Bd6 10.c4 dc4 11.Bc4 Bg4 12.f3 Bf5 13.g4 Bd7 14.g5 Nd5 15.Bd5 cd5 16.fe4 de4 17.Qh5 Qe7 18.Ne2 Qe6 19.Nc3 Bb4 20.Bd2 Bc3 21.Bc3 Ra2 22.Nc5 Ra1 23.Ba1 Qc4 24.Ne4 Qc1 25.Qd1 Qe3 26.Qe2 Qe2 27.Ke2 0-0 28.d5 b5 29.Kf3 b4 30.Kf4 Na6 31.Rb1 Nc7 32.d6 Ne6 33.Ke3 Ra8 34.Be5 Ra3 35.Ke2 Bb5 36.Kf2 b3 37.Ke3 b2 38.Nc3 f6 39.gf6= gf6 40.Bf6 (40...Rb3 41.Kd2=). Bestia_03g – GNUChess_414, computer chess game, 2000.

4.a4 f5 5.Bb2 Bd6 6.e3 Nf6 7.Qb3 (7.c4 Be6=+) 7...Be6 (7...Nbd7 8.Ba3–/+) 8.Nf3–/+ h6 (8...Nbd7 9.d4–/+) 9.c4=+ Nbd7 10.d4 e4 11.Nfd2 Bb4 (11...c5 12.cd5 Nd5 13.Bc4–/+) 12.Ba3 (12.Nc3 0-0=) 12...Qe7 (12...dc4 13.Bc4 Bc4 14.Qc4=) 13.Nc3=+ c6 (better 13...c5 14.Nd5 Bd5 15.Bb4 ab4 16.cd5 cd4 17.ed4 Nb6=) 14.Rb1?? (better 14.Be2=) 14...Ba3-+ 15.bc6 (15.Be2 0-0-+) 15...bc6 16.Qb7 (16.c5 Bb4 17.Qc2 f4-+) 16...0-0 17.Qc6 (17.c5 Bb4 18.Rb3 Rab8-+) 17...Rfc8 18.Qb7 Rab8 19.Qa6 Bb4 20.Rb3 (20.Nb5 dc4 21.Rb4 ab4-+) 20...Ne8 (better 20...dc4 21.Bc4 Nb6 22.Be6 Qe6 23.Rb4 ab4 24.Nd1-+) 21.c5 (21.Rb4 ab4 (21...Rb4?! 22.Qc8 Nb6 23.Qa6 dc4 24.Qa5=) 22.Nd1 dc4 23.Bc4 Nd6-+) 21...Bc5! 22.dc5 (22.Rb8 Nb8 23.Qb5 Bb4-+) 22...Nc5 23.Nd5 Qf7 24.Rb8 Na6 25.Rc8 Bc8 (25...Bd5?! 26.Ba6 Qe6 27.0-0 Qa6 28.Re8 Kf7 29.Rb8=+) 26.Nb6 Qc7 27.Nd5 (27.Bc4 Kf8 28.Nd5-+) 27…Qc1 (27...Qc1 28.Ke2 Nc5-+) 0–1. Diviak,Peter (1615) – Chlpik,Martin, MSR Mladeze – CH18, 2011.

4.c4 dc4 5.e3 Be6 6.Nf3 e4 7.Nd4 Bd5 8.Nc3 c5 (8...a4 9.Qc2 c6 10.Ne4 cb5 11.Nb5+=) 9.Nde2= Ne7 (9...Be6!?=) 10.Nf4+= g6 (10...Qd6 11.Qc2 f5 12.Ncd5 Nd5 13.Nd5 Qd5 14.Bc4 Qe5+/–) 11.Qc2+- (11.Ncd5?! Nd5 12.Nd5 Qd5+=) 11...Bg7 12.Nfd5 Nd5 13.Qe4 Kf8 14.Bb2 (14.Nd5?! Ba1 15.Bc4 Nd7=; 14.Qd5?! Qd5 15.Nd5 Ba1+-; 14.Qc4?! Nc3 15.Qc5 Kg8 16.dc3 Nd7+/–) 14...Nc3 15.dc3 (15.Qb7 Qd5 16.Qc8 Ke7 17.Qc7 Nd7 18.Bc3 Bc3 19.dc3 Qe5 20.Qe5 Ne5+-) 15...Qe7 16.Qd5 Be5. ilmarinens (2765) – mburden (2535), net–chess.com, 2006.

4.c4 Nf6 5.cd5=+ Nd5 6.Bb2 Bd6 7.Nc3 Be6 8.g3 (8.Nd5 Bd5 9.Qc2 0-0=+) 8...a4 (8...Nc3 9.Bc3 Bd5 10.f3=+) 9.Bg2 (9.Na4 Nd7=+) 9...a3 10.Bc1 Bc5 11.Nf3 Nc3 12.dc3 Qd1 13.Kd1 f6 14.Ne1 Bf2 15.Nd3 Bb6 16.Bb7 Ra7 17.Bf3 Ra5 18.Kc2 0-0 (18...Bc4 19.Kd2–/+) 19.Rd1 (19.Nb4 f5 20.Bd5 Bd5 21.Nd5 Rb5=) 19...Bc4–/+ (19...Rb5?! 20.Ba3 Re8 21.Bb4=) 20.Rb1 Re8 21.Be4 g6 0–1. ilmarinens (2765) – pierred (2420), net–chess.com, 2006.

4.e3 (--> 1.b4 e5 2.c3 d5 3.e3 a5 4.b5).

4.Nf3 Bd6 =+.

4.cb4 Bb4 5.Bd2 Bd2 6.Qd2 ed4 7.Qd4 Qf6 8.Qf6 Nf6 9.Nc3 c6 10.Nf3 d5 11.a4 b5! 12.e3 b4 13.Nd1 c5 14.Bb5 Bd7 15.Bd7 Kd7 16.Ne5 Ke6 17.f4 Ra5 18.Nd3 Nc6 19.0-0 c4 0–1. ajeffries (1910) – pierred (2420), net–chess.com, 2006.

4.de5 Nc6 5.Nf3 d5 6.Bf4 Be7 7.e3 g5 8.Bg3 f5 9.Bb5 Kf8 10.Bc6 bc6 11.0-0 h5 12.h3 Rh6 13.cb4+/– h4 14.Bh2 Bb4 15.Qd4 c5 16.Qb2 Rha6 17.a3 c6 18.Nbd2 Ba3=+ 19.Qc2 Qe7 20.Nb1 Bb4 21.Ra6 Ra6 22.Nfd2 g4 23.hg4 fg4 24.Qg6 c4 25.Qc2 h3 0–1. Turk – Kounoupidi, HCL–B2115 playchess.de, 2003.

3.a4 Nf6 4.Qb3 d6 5.e3 Be6 6.c4 Be7 7.b5 ab5 8.Nc3 c6 9.f3 Nbd7 10.Bb2? (better is 10.Ba3 Nc5 11.Qb1 Na4 12.cb5-+) 10...Nc5 11.Qc2 bc4 12.a5 (12.Be2 d5 13.Nd1 Bd6-+) 12...Ra5 13.Na4 (13.Ra5 Qa5 14.g4 b5-+) 13...Na4 (better is 13...Qa8 14.Nc5 Ra1 15.Kf2 Rf1 16.Kf1 dc5 17.Be5-+) 14.Ra4 Ra4 15.Qa4 b5 16.Qa6 Bd7 17.Nh3 0-0 18.Be2 Qc8 19.Qc8 Rc8 20.0-0 Bh3 21.gh3 Ra8 22.f4 ef4 23.ef4 c5 (23...Ra2 24.Bc3-+) 24.Bf3 Ra2 25.Bf6 Bf6 (worse is 25...gf6 26.Rf2-+) 26.Rd1 Ra3 27.Bc6 b4 Black prepares c3 28.Re1 Ra1 29.Kf2 (29.Ra1 Ba1 30.Kf2 b3-+) 29...Re1 (better is 29...Bh4 30.Ke2 Re1 31.Kf3 Rf1 32.Kg4 Be1-+) 30.Ke1 c3 31.dc3 b3 32.Kd2 b2 33.Be4 d5! 34.Bb1 d4 35.c4 Be7 36.Kd3 f5 37.Kd2 g6 38.Kc2 Bd6 39.Kb2 Bf4 40.Kc2 Bh2 41.Kd1 h5 42.Ke2 Kg7 43.Kf3 h4 44.Kg2 Bd6 45.Kf3 Kf6 46.Bd3 g5 Black intends f4 47.Kg2 f4 48.Kf3 1–0. maddoxdb – proglot, gameknot.com, 2013. (=1.c3 e5 2.b4 a6)

3.e3 b5 4.g3 d5 5.Bg2 c6 6.Ne2 e4 7.a3 f5 8.d4 h5 9.h4 g6 10.f4 Nh6 11.Bb2 Ng4 12.Bh3? Ne3–/+ 13.Qd2 Nc4-+ 14.Qc1 Nb2 15.Qb2 Qd6 16.Nd2 Nd7 17.Nb3 Bg7-+ 18.Nc5 Nc5 19.bc5 Qc7 20.0-0 Be6 21.a4 Rb8 22.a5 Bf6 23.Rfb1 Qe7 ½–½. pinoy (1910) – jeany (2015), net–chess.com, 2005.

3.e3 h6 4.a4 Nc6 5.b5 ab5 6.Bb5 Nf6 7.Nf3 Bd6 8.Nh4 0-0 9.Nf5 Nh7 (better is 9...Be7!?=) 10.Nd6+= cd6 11.Bc6 (better is 11.e4+=) 11...dc6–/+ 12.0-0 Qg5 13.Qf3 Bg4 14.Qg3 Be2 15.Re1 Qg3 16.hg3 Bc4 (16...Bd3 17.e4-+) 17.Na3 (17.d4!?–/+) 17...Be6 18.Nc2 Bb3 19.Nb4 Ba4 20.Nd3 b5 21.Ba3 c5 22.e4 f5 23.Nb2 fe4 24.Re4 Ng5 25.Re3 Bb3 26.Ree1 Be6 27.Nd3 e4 28.Nf4 Bf7 29.Bb2 Ra1 30.Ra1 Bc4 31.Ra7 Rd8 32.Nh5 Nf7 33.Nf4 (33.Re7-+) 33...Ne5 34.Nh5 Bf7 35.Nf4 (35.g4 Nd3 (worse is 35...Ng4 36.Ng3-+) 36.Ba1 Bh5 37.gh5 c4-+) 35...Nc4 36.Bc1 d5 37.Rb7 d4 38.Rb5? (38.cd4 Nd6 39.Rb6 cd4 40.Ne2-+) 38...dc3 39.Kh2 Nd2 40.Rc5 Nb3?? 41.Rc3+= Nc1 42.Rc1 Re8 43.g4 e3 44.fe3 Re3 45.Rc8 Kh7 46.Rc7 Bg6 47.Rc6 Be4 48.Rc7 Bb1 49.Nh5+= Re2 50.Rg7 Kh8 51.Rb7 Be4 52.Rb8 Kh7 53.Nf4 Bc6?? 54.Ne2+- Be4 55.Rb6 Kg7 56.Nf4 Bc2 57.Kg3 Be4 58.Nh5 Kf7 59.Rh6 Bc2 60.g5 Bd3 61.Rh7! Bh7 62.Kf4 Bg6 63.g4 Ke6 64.Ng7 Kf7 65.Nf5 Ke6 66.Nd4 Kf7 67.Ke5 Bd3 68.Nf5 Kg6 69.Kf4 Bc2 70.Nh4 Kg7 71.Ke5 Bb1 72.Nf5?? Kg6= 73.Kf4 Bc2 74.Nh4 Kg7 75.Ke5 Kf7?? 76.Nf5 Kg6 77.Kf4 Bb1 78.Ne7 Kf7 79.Nd5 Kg6 80.Ne3 Bd3 81.Nd5 Bb1 82.Nc7 Bc2 83.Ne8 Bb1 84.Nd6 Bc2 85.Nf5 Bb1 86.Nh4 Kg7 87.Ke5 Bc2 88.Nf5?? Kg6= 89.Kf4 Bb1 90.Nh4 Kg7 91.Nf3 Bc2 92.Kg3 Be4 93.Ne5 Bb1 94.Kh4 Bc2 95.Kh5 Bb1 96.g6 Bc2 97.Kg5 Bb1 98.Kh5 Bc2 99.Kg5 Bb1 100.Kh5 Kf6 101.Nd7 Kg7 102.Ne5 Bc2 103.Kg5 Bb1+- 104.Kh5 Bc2 105.Kg5 Bb1 106.Kh5 Be4 107.Kg5 Bb1 108.Kh5 Bc2 109.Kg5 Bb1+/– 110.Kh5 Kf6 111.Nd7 Ke6?? 112.Nf8 Kf6 113.Kh6 Ba2 114.g5 Kf5 115.g7 Bb3 116.Nd7 Ba2 117.Nf6 Bb3 118.g8Q Bg8 119.Ng8 Ke6 120.g6 Kf5 121.g7 Ke6 122.Kg6 Kd7 123.Nf6 Ke7 124.g8Q 1–0. maddoxdb – donmod777, gameknot.com, 2012. (=1.c3 e5 2.b4 a6)

3.e4 d5 4.ed5 Qd5 5.Qb3 Qb3 6.ab3=+ Nf6 7.b5 Be6 8.c4 Bc5–/+ 9.Nf3 Bf5 10.Nc3 e4–/+ 11.Nh4 Bg4 12.ba6=+ ba6 13.h3 Bd7 14.f3 0-0 15.Ne4 Ne4 16.fe4 Nc6 17.Ba3 Ba3 18.Ra3 Rae8 19.d3 Nd4? 20.Ra6+/– c6 21.Ra7 Nb3? 22.Rd7+- c5 23.Rb7 Nc1 24.Kd2 Nd3 25.Bd3 f6 26.Nf5 g6 27.Nh6 Kh8 28.h4 f5 29.ef5 Rd8 30.Kc3 gf5 31.Bf5 Rde8 32.Rh7 1–0. sbderkach (1680) – ajeffries (1645), net–chess.com, 2006.

3.e4 Nf6 4.Nf3 d6 5.Na3 Ne4–/+ 6.Bd3 Nf6 7.Qe2 Be6 8.Ng5 Bd7 9.Bc4=+ d5 10.Qe5 Qe7 11.Qe7 Be7 12.0-0?? dc4-+ 13.Re1 Nc6 14.Nc4 0-0 15.Ne3 h6 16.Nf3 Be6 17.d3 Bd6 18.h3 Ne7 19.a3 Nf5 20.g4 Ne3 21.Be3 Nd5 22.Bd4 Ne7 23.c4 c6 24.c5 Bc7 25.g5 hg5 26.Ng5 Nf5 -+. steelnuts – pitfall, Caissa.com, 2004.

3.Nf3 d6 4.d3 Bg4 5.h3 Bf3 6.ef3 Nc6 7.Be3 (7.f4 Nf6=) 7...h6 (7...d5 8.a3=+) 8.Be2 (8.f4 ef4 9.Bf4 Qf6=) 8...Be7 (8...d5 9.a3=+) 9.0-0 Bg5 10.Nd2 (10.d4 Nf6=) 10...Nf6 11.Qb3 Qd7 12.Ne4= Ne4 13.fe4 Be3 14.fe3 0-0-0?? 15.Rf7 Qe8 16.Rg7 Qf8 17.Rf7 Qg8 18.Bg4 Kb8 19.Raf1 Rh7 20.Be6 Rf7 21.Rf7 Qg6 22.a4 Re8 23.Bg4 h5 24.Bd7 Rg8 25.Rf2 Qg7? 26.Qf7 Qf7 27.Rf7 Nd8 28.Rh7 b6 29.Rh5 Rg7 30.Bf5 Kb7 31.g4 Kc6 32.h4 b5 33.a5 Nf7 34.g5 d5 35.Rh7 Rh7 36.Bh7 de4 37.Be4 Kd6 38.Bb7 (38…Ke7 39.Ba6+-) 1–0. saddamfalseteeth – pickles, Live Game Caissa's Web, 2004.

4.Qa4 Na7 5.b5 ab5 6.Qb3 c6 7.a4 d6 (better is 7...ba4!? 8.Ra4 b5–/+) 8.ab5+= Bd7?? (better is 8...Be6 9.Qb2 Nb5 10.Ra8 Qa8 11.Bb5 cb5 12.Qb5 Bd7+=) 9.b6+- Nb5 10.Ra8 Qa8 11.Nh3 h6 12.Bc4 (better is 12.c4 Bh3 13.gh3+-) 12...Ne7?? (better is 12...Ke7+=) 13.Bf7+- Kd8 14.0-0?? (better is 14.c4 Qa5 15.Ng1+-) 14...d5+= 15.d4 ed4 16.ed4 Nd6 17.Bh5 Bf5 18.Qa3 Qa3= 19.Na3 g6 20.Bf3 Ne4 21.Be4+= Be4 22.Nf4 Nc8 23.f3 Bf5= 24.g4 Bd7?? 25.h4 Rg8= 26.Re1 Nb6 27.Nc2 Bd6 28.Ne6 Be6 29.Re6 Kd7 30.Rf6 Be7 31.Rf7 Ke8 32.Bh6?? Kf7-+ 33.g5 Nc4 34.Nb4 Bb4 35.cb4 Ra8 36.h5 gh5 37.g6 Kg8 38.Bf4 Ra4 39.b5 cb5 40.Kh2 Kg7 41.Kh3 Kg6 42.Kh4 Nb2 43.Be5 Nd3 44.Bh8 Ne1 45.f4 Nf3 46.Kg3-+ Nd4 47.Kh4 Nf5 (47...Nf5 48.Kh3 Ra3 49.Kg2 Ra2 50.Kh3 b4-+) 0–1. maddoxdb – donmod777, gameknot.com, 2012. (=1.c3 e5 2.b4 a6)

4.Nf3 Bb4?? 5.cb4+- Nf6 6.a3 0-0 7.Nc3 d6 8.Bb2 Be6 9.d3 Qd7 10.Be2 d5 11.0-0 e4 12.de4 de4 13.Qd7 Nd7 14.Nd4 Nd4 15.ed4 Ne5?? 16.de5 f6 17.ef6 Rf6 18.Rfe1 Raf8 19.Bf1 Rf2 20.Kh1 e3?? 21.Re3 Bf5 22.Ree1 Rb2 23.Ne4 Be4 24.Re4 Rbf2 25.Re2?? Rf1 26.Rf1 Rf1 0–1. Fournier,Frederic (1885) – cuauhs (1775), Active blind, 2011.

4.Nf3 d5 +=.

4.d3 d5 5.d4 ed4 6.Nd4 Nd4 7.Qd4 Be6 8.Nd2 Nf6 9.Nb3 b6 10.Bg5 Be7 11.e3 h6 12.Bh4 0-0 13.Bd3 Qd7 14.0-0 Bf5 15.Rad1 Bd3 16.Qd3 a5 17.Bf6 Bf6 18.ba5 ba5 19.Qd5 Qd5 20.Rd5 a4 21.Nd4 Ra6 22.Rc5 Rc8 23.Rb1 Bd4 24.cd4 Rd6 25.Rb4 a3 26.Kf1 c6 27.Rb3 Ra8 28.Rcc3 c5 29.Rc5 Ra4 30.Rcc3 Rda6 31.Ke2 f6 32.Kd3 Kf7 33.Rc7 Kg6 34.Rbb7 Ra7 35.Rg7 Kf5 36.Rb5 Ke6 37.Rb6 Kf5 38.g4# 1–0. Trkn – guest636, ICC, 2004.

4.d3 d6 5.e4 Bg4 6.h3 Bh5 7.Be2 Nf6 8.0-0 Be7 9.a3 0-0 10.Be3 h6 11.Re1 Qd7 12.Ne5 Ne5 13.Bh5 Nh5 14.Qh5 Nd3 15.Rd1 Ne5?? (Better is 15...Nb2 16.Re1 Nc4=) 16.Qe5!!+- (16...Rfe8 17.Qd5+-) 1–0. Fritz 5.32 – NN, 2003.

3.Na3 c6 4.e4 a6 (4...a5 5.Nc2 Nf6+=) 5.c4 (better is 5.d4 ed4 6.Qd4=) 5...Bb4–/+ 6.cb5 ab5 7.Nc2 Bc5 8.d3 b4 9.Bb2 Qa5 10.Be5? (better is 10.Qd2!?–/+) 10...b3-+ 11.Ke2 bc2 12.Qc2 Bf2 13.Bg7 (13.Kf2 Qe5 Discovered attack) 13...Qb6?? (better is 13...Qg5 14.Qc3 Qe3 15.Kd1 Bg1 16.Bh8 d5+=) 14.d4?? (better is 14.Nf3+-) 14...Bd4-+ 15.Bh8 Bh8 (15...Ba6!? 16.Kf3 Ba1 17.Ba1 Bf1 18.Kg3-+) 16.Rb1 Ba6 17.Ke1?? (17.Kf3 Qa5 18.Ne2-+) 17...Bc3! 18.Kd1 (18.Qc3 Qb1 Deflection) 18...Qd4 19.Kc1 Bf1 (19...Qe3 20.Kd1 Qe1) 20.Rb3 (20.Nf3 Qe3 21.Kd1-+) 20...Qe3 21.Kd1 Qe1# 0–1. pape reyes – pikelet, chessworld.net, 2014.

3.a4= ba4 4.Qa4 Qf6 5.e4 Nc6 6.Nf3+= Nge7 7.b5 Nb8 8.Qa5 a6? 9.Qc7+- a5?! 10.Ne5 d6 11.Nc4 a4 12.Nd6 (12...Qd6 13.Qd6+-) 1–0. marekt – ramesh1.1, ChessWorld.net, 2003.

3.a4= c5 4.bc5 Qa5 5.Bb2 Bc5 6.e3 b4 7.Bb5 a6 8.Bc4 Nf6 9.Qb3 0-0 10.cb4 Bb4 11.Be5?? (better is 11.Nf3 Nc6 12.0-0+=) 11...Qe5-+ 12.Nc3 Nc6 13.Nf3 Qe7 14.Bd5 Rb8 15.Bc6 dc6 16.Qc4 Qb7 17.Ne4 Be7 18.0-0 Bf5 19.Nf6 Bf6 20.e4? (20.d4-+) 20...Ba1 21.ef5 h6 (21...Bf6 22.Rc1-+) 22.g4?? (better is 22.Ra1 Qb1! 23.Rb1 Rb1 24.Qf1 Rf1 25.Kf1-+) 22...Bf6 23.Rc1 Rbe8 (23...c5 24.Kg2-+) 24.h4 (24.Qc6 Qa7 25.Rc5-+) 24...c5! 25.Nh2 (25.Qc5 Qf3 Discovered attack) 25...g5 (better is 25...Bh4!? 26.a5-+) 26.h5 Qc6 27.Nf1 (27.a5 Re4 28.Qb3 Rfe8-+) 27...Re4 28.Qc5 Qc5 (better is 28...Rg4!? 29.Ng3 Qc5 30.Rc5-+) 29.Rc5 Rg4 30.Ng3 Rd8 31.Rc6 Be5 32.Rc2 Bf4 33.Kf1 Bg3 34.fg3 Rg3 35.Kf2 Rgd3 36.Ke2 R3d5 37.f6 Re8 38.Kd1 g4 39.Rc3 Rh5 40.Rg3 Rh4 41.Kc2 h5 42.d3 Rh3 43.Rg1 Ree3 44.Rd1 g3 45.d4 Rh2 46.Kc1 g2 47.Rg1 Rh1 48.Kd2 Rg1 49.Ke3 Rh1 50.Kf2 g1Q 51.Kf3 Qd4 52.Kg2 Rc1 53.Kf3 Rc3 54.Ke2 Qd3 55.Kf2 Qd2 56.Kf1 Rc1 0–1. maddoxdb – rad2rad, gameknot.com, 2012. (=1.c3 e5 2.b4 b5)

3.Bb2 Nc6 4.Nf3 e4 5.Nd4 d5?? (better is 5...Nd4 6.cd4 Bb4+=) 6.Nc6+- Qf6 7.Nd4 Bd6 8.Nb5 Be5 9.d4 Bd6 10.Qa4 c6 11.Na7 (11.Nd6 Qd6 12.c4 Nf6+-) 11...Bd7? (11...Ne7 12.b5 cb5 13.Qa5+-) 12.e3 (better is 12.Qa6+-) 12...c5?? (better is 12...Bb8+-) 13.Bb5 Bb5 14.Qb5 Ke7 (14...Kf8 15.Qb7 Rb8 16.Qd5+-) 15.Nc6 (better is 15.Qb7 Bc7 16.Qa8 Qe6 17.dc5 Be5+-) 15...Ke6 16.bc5 Bc7 (16...Qg5 17.0-0 Bh2 18.Kh2+-) 17.Qb7 Ne7 18.Qc7 Rhe8 19.Qd6 (better is 19.Ne5 Rad8 20.Qb6 Nc6+-) 19...Kf5 20.Qf4 (better is 20.Ne7 Qe7 21.Qd5 Kg6 22.g4+-) 20...Kg6 (20...Ke6 21.Qf6 Kf6+-) 21.Ne5 Kh5 22.g4 Kh4 23.Qg3 Kg5 24.f4 (24.h4 Kh6 25.g5 Qg5 26.hg5) 24...ef3 25.Nf3 (25.h4 Kh6 26.g5 Qg5 27.hg5) 25...Kg6+- 26.Ne5 Kg5 27.h4 Kh6 28.g5 1–0. kevtheman – jamieofthenorth, gameknot.com, 2011. (=1.c3 e5 2.b4 b5)

3.Qb3 d6 4.e3 Be6 (4...c6 5.a4 Be6 6.Qc2 ba4 7.Ra4=) 5.Bb5+= c6 6.Bc4 Bc4 7.Qc4 d5 8.Qb3 Nf6 9.h3 Bd6 10.d3 0-0 11.Nd2 Nbd7 12.Bb2 Rb8 13.a3 a5 14.Ngf3 Nc5 (14...c5 15.b5=) 15.Qc2+= ab4 (15...Nd3 16.Qd3 e4 17.Qe2 ef3 18.Qf3+=) 16.ab4 (16.cb4 Nd3 17.Qd3 e4 18.Bf6 Qf6+/– (18...ed3?? 19.Bd8 Rfd8 20.Nb3+-)) 16...Ne6 (16...Nd3 17.Qd3 e4 18.Qe2 ef3 19.Nf3+=) 17.0-0+/– Bc7 (17...Nd7 18.c4+/–) 18.Ra2 Qd6 19.c4 dc4? (19...Nd7 20.Rfa1+/–) 20.Be5 (20.Nc4 Qb4 21.Nce5 Qb3 22.Qb3 Rb3 23.Nc6 Rd3 24.Bf6 gf6+-) 20...Qb4? (20...Qd3 21.Bf6 gf6 22.Rb1+/–) 21.Bc7 (21.Nc4 Be5 22.Nce5 Rfc8+-) 21...cd3 22.Qd3 (better is 22.Qc6!? Rfc8 23.Rb1 Qb1 24.Nb1 Rc7 25.Qd6 Rb1 26.Kh2+-) 22...Nc7+/– 23.Rb1 (23.Rc1!?+/–) 23...Qe7= 24.Rb8 Rb8 25.Qc3 ½–½. Bandy 1 – Norfolk_and_good, chessworld.net, 2013.

3.e3 a5!?=.

3.e3 a6 4.a4 c6 5.ab5 cb5 6.Bb5 Qb6 (6...ab5 7.Ra8 Pinning (7.Ra8 Deflection)) 7.Bc4 Bb7 8.f3 f6 (better is 8...d5!? 9.Bb3 Nf6+=) 9.Qb3+- a5?? (better is 9...Ne7 10.e4 d5 11.ed5 Qd6+-) 10.Bf7 (better is 10.Bg8!? d5 11.Bd5 a4 12.Bf7 Ke7+-) 10...Kd8 11.Bd5 (better is 11.Bg8 ab4 12.Ra8 Ba8 13.Bh7+-) 11...Bd5 12.Qd5 Qc6 13.Qc6 (13.Ra5?! Qd5 14.Rd5 Ra1=) 13...dc6? (better is 13...Nc6!? 14.b5 Nce7+/–) 14.Ra5+- (worse is 14.ba5 Bd6+-) 14...Ra5 15.ba5 Bc5 16.Ba3 Ba3 17.Na3 Ne7 18.Ne2 Nd5 19.e4 Kd7 20.Nc4 Na6 (20...Nc7 21.d4 ed4 22.cd4+-) 21.0-0 (better is 21.ed5!? cd5 22.Nb6 Ke6+-) 21...Nf4 22.Nf4 ef4 23.Rb1 Rb8 24.Rb8 Nb8 25.h4 g6 26.Kh2 Na6 27.d4 c5 28.d5 Ke7 29.d6 Ke6 30.Kh3 Nb8 31.Kg4 f5 32.Kf4 fe4 33.Ke4 h6 34.g4 Nd7 35.a6 Nb8 36.a7 Nc6 37.a8Q Ne7 38.Qa2 Nd5 39.Ne3 Kd6 40.Qa6 Kd7 41.Qb7 Kd6 42.Qd5 Kc7 43.Qc5 Kd8 44.Nd5 Ke8 45.Qe7 1–0. maddoxdb – robby131, gameknot.com, 2011. (=1.c3 e5 2.b4 b5)

3.e3 Nc6 4.Bb5+= Rb8 5.Bc6 dc6 6.Ne2 c5 7.b5 Bd6 8.Qa4 Bd7 9.c4 c6?? (better is 9...Ra8+/–) 10.Qa7 (better is 10.bc6 e4 11.Nbc3+-) 10...cb5= 11.Na3 b4 12.Nb5 Bb5 13.cb5 Rb5 14.Qa4 Qd7 15.Qa8 Bb8 16.a4 Rb7 17.Qa6 Nf6 18.Qc4 Bd6 19.Qa6 (19.Bb2!?+=) 19...0-0 20.Qc4 Re8 21.0-0 h6 (21...e4!?–/+) 22.Bb2+= Qe6 23.Qe6 Re6 24.a5 Ra7 25.f4 e4 26.Bf6 Rf6 27.Ng3 b3?? 28.Nh5?? Re6+= 29.Ra3 c4–/+ 30.Ra4 b2?? 31.Rb1+= g6 32.Ng3 Ra6 33.Rb2 g5 34.Rb6 Bc7? 35.Ra6+- Ra6 36.Rc4 Ba5 37.Nf1 Bd8? 38.f5 Ra1? 39.Rc8 (39.Re4?! Kg7+-) 1–0. maddoxdb – bertu, gameknot.com, 2012. (=1.c3 e5 2.b4 b5)

3.e4 a6 4.Qh5 Qf6 (4...d6 5.a4 Nf6 6.Qe2=) 5.Qf3 (5.a4 Bb7 6.d3 a5 7.ab5 ab4 8.Ra8 Ba8=) 5...Nc6 (5...Bb7 6.d3=) 6.Qf6 (6.a4!? ba4 7.Ra4 Qf3 8.Nf3=) 6...Nf6=+ (worse 6...gf6 7.Nf3+=) 7.f3 (7.a4 ba4 (worse 7...Ne4 8.ab5 Nb8 9.Nf3+=) 8.d3 Rb8=+) 7...Bb7 (7...d5 8.ed5 Nd5 9.a4 ba4 10.Ra4=+) 8.Bd3 (8.a4 ba4 9.Bc4 a5=+) 8...Bd6 (8...d5 9.ed5 Nd5 10.a4 ba4 11.Be4=+) 9.h4 (9.a4 ba4 10.Ra4 a5=) 9...h6 (9...Bb4 10.a4 ba4 11.cb4 Nb4 12.Ra3–/+) 10.Bc2 (10.a4 Na7=) 10...a5 11.Na3 Ba6 12.ba5 Na5 (12...b4 13.cb4 Nb4 14.Nh3=+) 13.Ne2 (13.Rb1 c6=+) 13...Bc5 (13...b4!? 14.cb4 Bb4=+) 14.d4= Bd6 (better 14...ed4 15.e5 Ba3 16.Ba3 Nc4 17.ef6 Na3=) 15.d5 (better 15.de5 Be5 16.f4+=) 15...Bb7?? (better 15...c6–/+) 16.Nb5+- 0-0 (16...Ba6 17.Nd6 cd6 18.Ng3+-) 17.Nd6 cd6 18.g4 Ne8 (18...Ba6 19.g5 Nh5 20.Rh3+- (20.gh6?! Be2 21.hg7 Rfc8=)) 19.g5 h5 (19...hg5 20.hg5 f5 21.Ba4+-) 20.Ng3 (20.Ba4 Nc4 21.Bd7 Nc7+-) 20...g6 21.Bd3 (21.f4 Rc8 22.Ne2 Ba6+-) 21...Nc7? (better 21...Nb3!? 22.Rb1 Nc1 23.Rc1 f6+-) 22.Rb1 (22.Ba3 Ne8+-) 22...Ba6 23.Ba6 (23.Ke2 Bd3 24.Kd3 Na6+-) 23...Na6 24.f4 (24.Ke2 Rfc8 25.Bd2 Nc4+-) 24...Rab8 (24...Rfc8 25.fe5 de5 26.Bd2+-) 25.Rb8+- Rb8 26.fe5 (26.Ke2 Nc4 27.Kd3 Nb2 28.Kc2 Nc4+-) 26...de5+- 27.Rf1 (27.Ke2!?+-) 27...Nc4+= 28.Rf6 (28.Ke2 Nc5+=) 28...Nc5= 29.Kd1 (29.Ke2!?=) 29...Rb1=+ 30.Rf3 d6 (30...Ra1 31.a3=+) 31.Kc2=+ Rb7 (31...Ra1 32.a3=+) 32.Be3 (32.Rf2!?+=) 32...Na3 (32...Rb2!? 33.Kd1 Ne3 34.Re3 Ra2–/+) 33.Kd2 Rb2 34.Kc1 (34.Kd1 Rb1 35.Ke2 Rb2 36.Kf1 Nc4=+) 34...Nd3 (34...Rc2 35.Kd1 Rc3 36.Ke2 Rc2 37.Kd1=+) 35.Kd1 Rb1 (35...Ra2 36.Bd2 Nb2 37.Ke1–/+) 36.Kd2 (better 36.Ke2 Nc1 37.Bc1 Rc1 38.Rf6+=) 36...Nf4?? (better 36...Nc1=) 37.Bf4+- ef4 38.Rf4 Nc4 39.Kd3 Ne5 40.Kd4 (better 40.Kc2!? Ra1 41.Kb3 Rb1 42.Ka4+-) 40...Rd1+- 41.Ke3 Rd3 42.Kf2 Ng4 43.Kg2 Rd2 (43...Rc3 44.Ne2 Rc2 45.Kf1=) 44.Kf1 (44.Kg1 Ra2 45.Nh1 Rc2+=) 44...Rd3 (44...Ra2 45.Kg1+=) 45.Kg2 (45.Nh1 Rc3 46.Nf2 Ne3 47.Ke2 Ng2+=) 45...Rd2+= 46.Kg1 Kg7 (46...Ra2 47.Nf1+=) 47.Nf1 (47.a4 Ra2+-) 47...Rd3 (47...Ra2 48.c4=) 48.Nh2 (48.a4!?+=) 48...Rg3= 49.Kf1?? (better 49.Kh1 Rh3 50.Kg1 Rg3 51.Kh1=) 49...Nh2-+ 50.Kf2 (50.Ke2 Ng4-+) 50...Rd3 (50...Rc3 51.Kg2 Ng4 52.Rf3 Rc2 53.Kg3 Ra2 54.Rb3-+) 51.Ke2 (51.Kg2 Ng4-+) 51...Rc3 52.a4 (52.Rf6 Rh3-+) 52...Ra3 53.Rf2 (53.e5 de5 54.Re4 Ra2 55.Kd3 Nf3-+) 53...Ra2 54.Ke1 Ra1 (54...Ra4?! 55.Rh2 Re4 56.Kd2 Rd4 57.Ke3 Rd5 58.Rb2-+) 55.Ke2 Ra2 56.Ke3?? (56.Ke1 Ra4 57.Rh2 Re4 58.Kd2 Rd4 59.Kc3 Rd5 60.Rb2-+) 56...Ng4-+ 57.Kd4 (57.Kf3 Rf2 58.Kg3 f6 59.gf6 Kf6 60.a5 g5 61.a6 Rh2 62.hg5 Kg5 63.e5 h4 64.Kf3 Kf5 65.a7 Rf2) 57...Nf2 (57...Ra4!? 58.Kc3 Nf2 59.e5 Ne4 60.Kc2 de5 61.Kd1-+) 58.Kc4 (58.a5 Ra4 59.Ke3 Ne4-+) 58...Ra4 59.Kc3 Re4 60.Kd2 Rh4 61.Ke3 Nd1 62.Ke2 Nc3 63.Kf2 Rg4 64.Kf3 Nd5 65.Kf2 h4 66.Kf3 (66.Ke2 Rg5 67.Kf2 h3 68.Kf3 h2 69.Kf2 h1Q 70.Ke2 Qe4 71.Kd1 Rg2 72.Kc1 Qc2) 66...Rg5 (66...Rf4 67.Kg2 Ne3 68.Kg1 Rf1 69.Kh2 d5 70.Kh3 Rh1) 67.Kf2 h3 68.Ke2 (68.Kf3 h2 69.Kf2 h1Q 70.Ke2 Qe4 71.Kd1 Rg2 72.Kc1 Qc2) 68...h2 69.Kd3 h1Q 70.Kd4 (70.Kc4 Qb1 71.Kd4 Qb3 72.Ke4 Qe3) 70...Qh4 (70...Rg4 71.Kd3 Qd1) 71.Kd3 Rg3 72.Ke2 (72.Kd2 Qh2 73.Ke1 Rg1) 72...Qh2 73.Kf1 (73.Ke1 Rg1) 73…Rg1 0–1. Yildirim,Melek – Firat,Sevcan, Turkish Championship Club, 2018.

3.e4 c5 4.bc5+= b4? 5.cb4+- Bb7 6.Nc3 d6 7.Bb5 Nc6 8.Qa4 dc5?? 9.Bc6 Bc6 10.Qc6 Ke7 11.Nd5 Qd5 12.Qd5 Rd8 13.Qe5 Kd7 14.bc5 Nf6 15.d4 Be7 16.Bg5 h5 17.Nf3 Ng4 18.Qe7 Kc8 19.Qa7 Rde8 20.Be7 Nf6 21.Rb1 Nd7 22.Qb7 1–0. zggenev – IrishBouncer, ChessWorld.net, 2005.

3.e4 d5 4.ed5 Qd5 5.Nf3 h6 6.Bb2 e4 7.Nd4+= c6 8.d3 c5 9.c4?? bc4 10.dc4= Qe5 11.bc5 Bc5+= 12.Qa4?? Bd7-+ 13.Qd1 Nc6 14.Nc6 Qb2 15.Nd2 Bc6 16.Rb1 Qf6 17.f3 ef3 18.gf3 Rd8 19.Qe2 Ne7 20.Ne4 Be4 21.Qe4 Qc3 22.Ke2 Qd2 0–1. roze (1740) – nwishn (1735), net–chess.com, 2006.

3.e4 Nf6 4.d3 h6 5.Nf3 Nc6 6.Be2 d5 7.ed5 Nd5 8.0-0 Rb8 9.h3 Bd6= 10.Nh2 Nf6 11.Be3 0-0 12.Ng4 Ng4 13.Bg4 Be7 14.Bc8 Qc8= 15.Qg4 Qg4=+ 16.hg4 Rbd8 17.Rd1 Rd6 18.Na3 a6 19.Nc2 Rg6 20.f3= f5 21.gf5+= Rf5 22.a4 Rf3=+ 23.Rf1 Rfg3 24.Rf2 ba4 25.Ra4= Nd8 26.Ra5 Nf7=+ 27.b5 ab5 28.Rb5 Bd6 29.Bc5? Ng5 30.Bd6 Nh3 31.Kf1 Nf2 32.Be5 Rg2?? 33.Ne3+/– Rg1 34.Kf2 c6 35.Rb8 Kh7 36.Rb7 R1g5 37.Nc4 h5+= 38.d4 h4 39.Rb1 h3 40.Rh1 Rh5 41.Rh2 Rf5 42.Ke3 Rh6 43.Ke4 Rf1 44.Ne3 Rh4 45.Kd3 Rf7 46.Ng2 Rh6= 47.Ke3?? hg2-+ 48.Rg2 Rh3 49.Kd2 g6 50.c4 Rff3 51.c5 Ra3 52.Ke1 Rae3 53.Kf2 Rhf3 54.Kg1 Re1 55.Kh2 Rfe3 56.Bf6 R1e2 57.Re2 Re2 58.Kg3 Kh6 59.Kf3 Re6 60.Be5 Kh5 61.Bg3? g5 62.Bh2 g4 63.Kf4 Re2 64.Bg3 Re8 65.Kf5 Ra8 66.Ke5 Rd8 67.Ke6? Rd4 68.Bd6 Ra4 69.Kd7 Ra6 70.Kc7 Kh4 71.Kb7 Ra2 72.Kc6 g3 73.Bg3 Kg3 74.Kd7 Rd2 ½–½. Alviss – Ginger Prince, ChessWorld.net, 2004.

4.ab5 cb5 5.e3 d5 6.Bb5 Bd7 7.Qa4 a6 8.Bd7 Qd7 9.Qd7 Nd7 10.Na3 a5? (better is 10...Ngf6+=) 11.Nb5+- Rc8 12.Ra5 (12.ba5 Nc5 13.Ba3 Kd7+-) 12...Ngf6 (12...Bb4 13.cb4 Rc1 14.Ke2+/–) 13.Ra7 (better is 13.Ne2+-) 13...Ne4?? (better is 13...Bb4 14.d4 Bf8+/–) 14.Ne2 d4 (14...Kd8+-) 15.ed4 ed4 16.Ned4 (worse is 16.Nbd4 Ne5 17.0-0 Bd6+-) 16...Bb4 17.Nc7 Ke7 (17...Rc7 18.Rc7 Bf8 19.d3+-) 18.Nd5 Kd8 19.Nb4 Re8 (19...Ke8 20.0-0 Ndc5 21.Nf5+-) 20.0-0 (20.Nbc6 Rc6 21.Nc6 Kc8 22.Ra8 Kc7 23.Re8 Nd6+-) 20...h5 (20...Nb8 21.Rf7 Rc7 22.Rc7 Kc7 23.Re1+-) 21.Ndc6 Rc6 22.Nc6 Kc8 23.Ra8 Kb7 24.Re8 Kc6 25.Re4 f5 26.Re7 g5 27.Ba3 f4 28.f3 g4 29.fg4 hg4 30.Rf4 g3 31.h4 Kc7 32.Rd4 Kc6 33.Red7 Kb5 34.c4 Ka4 35.Ra7 Kb3 36.c5 Kc2 37.c6 Kd1 38.c7 Ke2 1–0. maddoxdb – kokitov, gameknot.com, 2013. (=1.c3 e5 2.b4 b5)

4.ab5 d5 5.e3 Nf6 6.Qa4 Qb6 7.Qa5 Qa5 8.Ra5 a6 9.bc6 Nc6 10.Ra3 a5 (10...Ra7 11.Nf3+=) 11.Ra2 (11.Bb5!? Bd7 12.Bc6 Bc6 13.Ra5 Ra5 14.ba5+/–) 11...Bb7 12.b5 Ne7 13.b6 Nc6 14.Bb5 Bc5 15.Nf3 Bb6? (15...Nd7 16.d4 Bb6 17.de5=) 16.Ba3 (better is 16.Ne5 Rc8 17.Ba3+/–) 16...0-0-0?? (better is 16...Bc7=) 17.Bc6+- Bc6 18.Ne5 Be8 19.Rb2 (better is 19.Be7+-) 19...Kb7?? (better is 19...Bc7 20.f4 Bd6+/–) 20.Bc5+- Nd7 21.Nd7 Bd7 22.Rb6 Kc7 23.0-0 f5 24.Ra6 Ra8 25.Ra8 Ra8 26.Na3 Rb8 27.Rb1 Rc8 28.Nb5 Bb5 29.Rb5 Ra8 30.Ba3 Kc6 31.Rc5 Kd7 32.Rd5 Ke6 33.Rd6 Kf7 34.Rd7 Kg6 35.h4 h5 36.Be7 a4 37.Ba3 Ra6 38.Rd6 Rd6 39.Bd6 Kf6 40.d4 Ke6 41.Ba3 Kd5 42.Kf1 g6 43.Ke2 1–0. maddoxdb – pestman, gameknot.com, 2012. (=1.c3 e5 2.b4 b5)

3.Qa4 Na6 4.b5 Nc7 5.Nf3 (5.e3 Nf6= 6.Nf3 Qe7 7.d4 e4 8.Ne5 Nfd5 9.Ba3; 5.d3 a6 6.b6 Nd5 7.Nf3 Nb6 8.Qb3 d6 9.c4) 5...Qf6 (5...Qe7 6.e4= (6.d3 Nf6 7.c4 d5 8.Nc3 e4 9.de4) 6...Nf6 7.Bd3 d5 8.0-0 Bg4 9.ed5) 6.d3 (6.e4 d5= 7.d4 cd4 8.cd4 de4 9.Ne5; 6.Na3 Ne7 7.Nc4 e4 8.Nfe5 Ng6 9.Ng4) 6...a6 (6...d5 7.e4= (7.Bg5 Qd6 8.c4 h6 9.Bh4) 7...Ne7 8.Na3 Bd7 9.Bg5) 7.ba6 (7.b6 Nd5 8.Nbd2 Qc6 9.Qc6) 7...Ra6 8.Qc2 (8.Qe4 d6= 9.c4) 8...d5 (8...Ne7 9.Nbd2) 9.e4 (9.Nbd2=) 9...d4 10.cd4 ed4 11.Be2 h6 (11...Be7 12.0-0=) 12.0-0=+ Ne6 13.Ne1 g5 (13...Bd6 14.f4 Qe7 15.Bg4=) 14.Bg4= Bd6 (14...Bd7 15.Nd2=+) 15.Na3 Bh2? (better 15...Bd7=) 16.Kh2+- h5? (16...Qe7+-) 17.Be6 g4 (17...fe6 18.Qc5 Rc6 19.Qg5 e5+-) 18.Bc8 Qh4 (18...Qc6 19.Bb7! Qb7 20.Qc5 Qb8 21.Kh1+-) 19.Kg1 g3 (19...Qe7 20.Rb1 Qc7 21.Bb7+-) 20.fg3 Qg3 21.Qc5 Ne7 22.Rb1 (better 22.Nb5 Rg6 23.Ba3 0-0 24.Qe7 Rc8 25.Qf7 Kh8+-) 22...h4 23.Bg5 (better 23.Rb7 0-0 24.Re7+-) 23...Ng6 24.Rb7 (24.Bd7 Kd7 25.Rb7 Qc7 26.Qc7 Ke8 27.Qf7) 24...h3 (24...Qe3 25.Kh1 Qg1 26.Rg1 f6 27.Bf5 Rd6 28.Bg6 Kf8 29.Qd6 Kg8 30.Qd8) 25.Bd7 1–0. Jacewicz,Grzegorz (2000) – Koenig,Uwe (2410), remoteschach.de, 2010.

3.Qa4 Nc6 4.b5= Na5 5.c4 (5.Nf3 d6=) 5...b6 (5...Nf6 6.Nc3=) 6.Qc2 (6.Bb2!?=) 6...Nf6=+ 7.g3 (7.d3 Bb7=+) 7...Bb7–/+ 8.f3 (8.Nf3 Qe7 9.Na3 e4–/+) 8...d5 (8...a6 9.Na3 d5 10.Bb2-+) 9.cd5–/+ Nd5 10.Bg2 (10.Nc3 Nb4 11.Qa4 Bd6-+) 10...Bd6 (10...Nb4 11.Qb2 Nc4 12.Qc3-+) 11.a4? (better 11.Nc3!?–/+) 11...0-0 (better 11...c4 12.Nc3 Nb3-+) 12.e4? (12.Nc3 Nb4 13.Qd1-+) 12...Nb4 13.Qc3 Bc7 (13...c4!? 14.Bf1 Nb3 15.Ra3-+) 14.Ba3 Nd3 15.Ke2 c4 (better 15...Nb4!? 16.Bb4 cb4 17.Qb4-+) 16.Bf8 Kf8?? (better 16...Qf8 17.Nh3 Rd8-+) 17.Na3= Qd6?? (better 17...Nb3 18.Nc4 Na1 19.Qd3 Qd3 20.Kd3 Nb3=) 18.h4?? (better 18.Nc4 Nc4 19.Qd3+- (19.Qc4?! Rd8+=)) 18...Qc5-+ 19.Rh2?? (better 19.Nh3-+) 19...Qf2 20.Kd1 Qg1 21.Kc2 Qh2 22.Bf1 Rd8 (better 22...Nc5 23.Nc4 Nab3 24.Ra3 Nd4 25.Kb2-+) 23.Rd1 (23.Nc4 Nc4 24.Bd3 Na5-+) 23...Qg3 (better 23...Rd4!? 24.Kb1 Qg3 25.Nc4 Qf3 26.Ne3-+) 24.Nc4 Nc4 25.Bd3 Qf3 (better 25...Na5 26.Be2-+) 26.Rf1 (26.Bc4 Be4 27.d3 Rd4-+) 26...Ne3! 27.Kb3 (27.de3 Qg2 Double attack) 27...Nf1 28.Qc2 Rd3 29.Qc3 (29.Kb2 Rd2 30.h5 Rc2 31.Kc2 Bd6 32.h6 Be4 33.Kb2 Qa3) 29...Nd2 30.Kb2 (30.Ka2 Rc3 31.Kb2 Rc4 32.a5 Bd6 33.ab6 Qa3) 30…Rc3 (30...Rc3 31.a5 Nc4 32.Kb1 Qf2 33.ab6 Qb2) 0–1. Benreguia,Frederic – Goldmund,Heike, FICGS, 2016.

3.Qa4 e4 A) 4.Ba3 Nf6 5.e3 (5.f3 Qb6 6.bc5 Bc5 7.Bc5 Qc5 8.fe4 0-0 9.Nf3; 5.Nh3 Qb6 6.b5 d5 7.f3 ef3 8.gf3 Bd6 9.Rg1; 5.g3 Na6 6.b5 Nc7 7.Bg2 a6 8.b6 Ncd5 9.Be4) 5...Qb6 6.bc5 Bc5 7.d4 Ba3 8.Qa3 Nc6 9.Nd2; B) 4.b5 d5 (4...Nf6 5.c4 Bd6 6.Nc3 Be5 7.g3 d6 8.Nh3 Nbd7 9.Nf4) 5.f3 (5.c4 d4 6.d3 ed3 7.ed3 Nf6 8.Nf3 Bd6 9.Be2; 5.d3 Nf6 6.de4 Ne4 7.f3 Nf6 8.Nh3 Bd6 9.Bf4) 5...Nd7 6.fe4 Nb6 7.Qc2 Qh4 8.Kd1 de4 9.g3; C) 4.Nh3 Nf6 5.Ba3 Qb6 6.e3 Nc6 7.bc5 Bc5 8.Ng5 d5 9.Bc5.

3.Qa4 Nf6 A) 4.b5 d5 (4...Be7 5.c4 d6 6.Nc3 Nbd7 7.Nf3 Nb6 8.Qb3 0-0 9.e3) 5.Nf3 (5.d3 Nbd7 6.Nf3 Bd6 7.Nbd2 0-0 8.Bb2 Re8 9.Qc2; 5.c4 Nbd7 6.cd5 Nb6 7.Qh4 Nbd5 8.Nf3 e4 9.Ng5; 5.Qh4 Be7 6.Nf3 e4 7.Ne5 Nbd7 8.Nd7 Bd7 9.c4) 5...Nbd7 6.d3 Bd6 7.Nbd2 Nb6 8.Qh4 0-0 9.a4; B) 4.Ba3 B1) 4...cb4 5.cb4 (5.Bb4 Be7 6.Nf3 Nc6 7.Na3 0-0 8.Be7 Qe7 9.e3) 5...Nc6 6.Nc3 Qb6 7.Nf3 h6 8.Rb1 e4 9.b5; B2) 4...Qb6 5.Nf3 cb4 6.Bb4 Bb4 7.Qb4 Nc6 8.Qb6 ab6 9.d4; C) 4.Na3 C1) 4...e4 5.Nh3 (5.Bb2 Nc6 6.b5 Ne5 7.Nh3 d5 8.f4 ef3 9.gf3; 5.Nc2 Nc6 6.Ba3 cb4 7.Nb4 a5 8.Nc6 dc6 9.Bf8; 5.f3 cb4 6.cb4 Na6 7.Nb5 Be7 8.Ba3 0-0 9.e3; 5.Nb5 cb4 6.cb4 Nc6 7.Nh3 a6 8.Bb2 Rb8 9.Nd4) 5...cb4 6.cb4 Na6 7.Nb5 Be7 8.a3 0-0 9.Bb2; C2) 4...cb4 5.cb4 e4 6.Nc4 Na6 7.a3 Nc7 8.Qb3 d5 9.Ne5; D) 4.bc5 D1) 4...e4 5.e3 (5.d4 ed3 6.ed3 Bc5 7.d4 Bd6 8.Bd3 0-0 9.Ne2; 5.d3 Bc5 6.de4 b5 7.Qc2 0-0 8.Nd2 Nc6 9.e3; 5.Na3 Na6 6.Nh3 Nc5 7.Qc2 Be7 8.Nb5 0-0 9.Nf4; 5.Nh3 Na6 6.Qc4 Bc5 7.Ba3 Qb6 8.Qb3 0-0 9.e3) 5...Na6 6.Ba6 ba6 7.Nh3 Qc7 8.Ba3 Bb7 9.c4; D2) 4...Bc5 5.Nf3 Nc6 6.d4 ed4 7.cd4 Bb6 8.Nc3 0-0 9.e3.

3.Bb2 cb4 4.cb4= Bb4 5.Be5 f6 6.Bb8 Rb8 7.Nc3 Qc7 8.Nd5 Qd6 9.Qb3 a5 10.Nf3 Ne7 11.Ne7 Qe7 12.e3 b6 13.Bb5 Bb7= 14.0-0 Bf3 15.gf3 Qe5 16.Rac1?? Qb5-+ 17.Rc2 Qg5 18.Kh1 d5 19.Rg1 Qf5 20.Rg7 Qf3 21.Kg1 Kf8 22.Rg3? Rg8 23.Rg8 Kg8 24.a3 Bd6 25.Rc6 Bc5 26.d4?? Qg4 27.Kf1 Qd7?? 28.Qb5?? Ba3-+ 29.f3 h5 30.e4 de4 31.Qc4 Kg7 32.fe4?? b5 33.Qc5 Bc5 34.Rc5 Qd4 35.Rc7 Kg6 36.Re7 Qd3 37.Kf2 Rd8 (38.Rd7 Rd7 39.h3 Qc2 40.Ke3 Qd2 41.Kf3 Rd3) 0–1. I need chocolate... – METSAR, ChessWorld.net, 2005.

3.b5 b6 4.e3 (4.d4 ed4 5.cd4 a6=) 4...Bb7 (4...d5 5.d4 Nd7 6.de5 Ne5 7.Be2=+) 5.Ne2 (5.d4 e4=) 5...d6 (5...d5 6.d4=) 6.Ng3 (6.d4 Nd7=) 6...Nf6 7.h3 (7.d4 Nbd7=) 7...Nbd7 8.e4 (8.d4!?=+) 8...Ne4 9.Ne4 Be4 10.Na3 (10.c4 Nf6–/+) 10...Nf6 (10...d5 11.d3 Bf5 12.Qh5-+) 11.d3 Bb7 12.Nc2 Be7 13.Ne3 0-0 14.Be2 d5 15.0-0 d4 16.Nf5 e4 17.cd4= cd4 18.Ne7 Qe7–/+ 19.f4? e3 20.Bb2 Rfd8 21.Qa4 Bd5 22.Bd4= Ne8 23.Bf3?? Bf3 24.Rf3= e2 25.Re1 Rac8 26.Re3 Qh4 27.R3e2 Qf4 28.Qd1?? Qd4-+ 29.Kh1 Qd3 30.Qd3+- Nf6 31.Qf5 Rc5 32.Qf4 Kf8 33.Rf1 Rb5 34.Qc7 Rbd5 35.Qa7 R5d7 36.Qb6 Nd5 37.Qc5 Kg8 38.Qf2 Nf6 39.a4 Rd4 40.a5 R8d7 41.a6 Ne4 42.Re4! Re4 43.a7 Ra4 44.Qe3 Kf8 45.Qc5 Ke8 46.Qc8 Ke7+- 47.a8Q Ra8 48.Qa8 f6 49.Re1 Kf7 50.Qe8# 1–0. guest1207 – guest744_jjirous, ICC, 2000.

3.e3 cb4 4.Bb5 a6 5.Ba4 b5 6.Bb3 bc3?? 7.dc3 Nf6–/+ 8.a3 a5 9.Nf3 b4?? 10.Ne5+/– Be7?? 11.Nf7+- (11...Qc7 12.Nh8 bc3 13.Qd3+-; < 11.Bf7 Kf8 12.Bd5 Qc7 13.Ba8 Qe5 14.ab4 ab4+-) 1–0. ronsteel – gera, Live Game Caissa's Web, 2004.

3.e4 a5 4.Bc4 Nf6 5.Nf3 Ne4 6.0-0 d5=+ 7.Bb5 Nc6 8.Ne5 Bd6?? 9.Nc6+- Qb6 10.Nd4 Bd7 11.Bd7 Kd7 12.Qg4 Kc7 13.bc5 Bc5 14.Qf4 Nd6 15.Nf5 Rad8 16.Nd6 Rd6 17.Qf7 Rd7 18.Qf3 Rf8 19.Qe2 19...Rdf7? 20.d4 Bd6 21.Na3 Bh2 22.Kh2 Qf6 23.Qe5 Kc6 24.f4 Qh4 25.Kg1 Re8 26.Qe8 Rd7 27.f5 b5 28.Bf4 b4 29.Qc8 Kb6 30.Qc5 Kb7 31.cb4 g5 32.Qb5 Kc8 33.Qb8 1–0. patman007 – IrishBouncer, ChessWorld.net, 2005.

3.Nf3 Qc7 4.a3 Be7 5.e3 d6 6.d4 cb4 7.ab4 Bg4 8.Be2 Bf5 9.0-0 ed4 10.ed4 Bb1 11.Rb1 Qc3 12.Rb3 Qc7 13.Bb2 d5 14.Rc3 Qd8 15.h3 Bb4 16.Rb3 a5 17.Bb5 Nc6 18.Bc6 bc6 19.Qe2 Ne7-+ 20.Bc3 0-0 21.Bb4–/+ ab4 22.Rb4 Re8 23.Qd3 Ng6 (24.Rfb1 Qf6–/+) 0–1. LuckyMiki – vallabhan, internet, 2007.

4.d4 e4 5.Bf4 =+.

4.e3 f5 5.a4 Nf6 6.Bd3 (6.d4 Nbd7=+) 6...e4 7.Bc2 d4 (7...a6!?–/+) 8.cd4 cd4 9.Bb3 Nbd7 10.ed4 Nb6 11.Qe2 (11.Ne2 Nbd5=) 11...Nbd5 12.Bd5 Nd5 13.Nc3? (13.d3 Qc7 14.Kd1 Nf6 15.de4 fe4–/+ (< 15...Ne4 16.f3+/–)) 13...Be6?? (better is 13...Nf4 14.Qd1 Ng2 15.Kf1 Nf4-+) 14.Nd5–/+ Bd5 15.Nh3 Bd6 16.g3 0-0 17.Nf4 Bf4 18.gf4 Qh4 19.Qe3 Rac8 20.Ba3 Rf6 21.Bc5 b6 22.Bb4 Rg6–/+ 23.Rc1?? Rc1 24.Ke2 Bc4 25.d3-+ Bd3 26.Kd2 Rh1 27.Bd6 Rh2 28.d5 Qf2 29.Qf2-+ Rf2 30.Kc3 Rc2 31.Kd4 Rd6 32.Ke5 Rd8 33.d6 Rc5 34.Ke6 Kf8 35.d7 Bc4 36.Kd6 Rd5 37.Kc7 R5d7 38.Kc6 Bd5# 0–1. Flip4 – Laksman4, Live Game Caissa's Web, 2004.

4.d4 ed4 5.cd4 Bb6 6.e3 Ne7 7.Bd3 d5 8.Ba3 Nbc6 9.Nd2 0-0 10.Rc1 Ba5 11.Ngf3 Bd2 12.Nd2 Kh8 (12...Re8 13.Qb3+=) 13.Qh5+/– f5 14.0-0 Rf6 15.Rc2 Rh6 16.Qf3 Qc7 17.h3 Be6 18.Rfc1 Bf7 19.Be7 Qe7 20.Bb5 (20.Qf5 Bg6 21.Qd5 Bd3–/+) 20...Rg6 21.Bc6 (21.Qf5?! Be6 22.Qh5 Rg5+=) 21...bc6 22.Qf5 Be6 23.Qe5 Qf7 (23...Rf8!? 24.Rc6 Qh4 25.Nf3 Qh3 26.Ng5+-) 24.Rc6+- (White creates threats along the open c–file) 24...Re8 25.Rc7 Bd7 26.Qh2 Qf6?? (26...Rf8 27.f3 Qe7+-) 27.Rd7 Rf8 28.Qf4 Qf4 29.ef4 Rgf6 (29...Ra6 30.Rcc7+-) 30.Rcc7 Re8 (30...Rg8 31.Ra7 Rf4 32.Rd5+-) 31.Rg7 Rf4 32.Rh7 Kg8 33.Rcg7 Kf8 34.Nf3 Re6 (34...Rfe4 35.Rf7 Kg8 36.Ng5 Rd4 37.Rf6 Re1 38.Kh2+-) 35.Ra7 Kg8 36.Rag7 Kf8 37.Ne5 Ref6 38.Nd7 (38...Ke8 39.Re7 Kd8 40.Nf6 Rf6 41.Ra7 Rf7 42.Rh8 Rf8 43.Rf8#) 1–0. b4_player (2220) – danieli (1730), GameColony.com, 2003.

4.d4 ed4 5.cd4 Be7=.

4.e3 Qf6 5.Nf3 Nc6 6.Be2 (6.d4 ed4 7.ed4 Be7+=) 6...d5 7.0-0 d4 (7...e4!? 8.Nd4 Qg6+=) 8.cd4+= Nd4?? (better is 8...ed4 9.Bb2 Nge7+=) 9.ed4+- ed4 10.d3 Ne7 11.Nbd2 0-0 12.Bb2 Kh8?! (12...Nc6 13.Ne4 Qf5 14.Qa4+-) 13.Nb3 (better is 13.Ne4 Qf5 14.Nc5 Qc5 15.Qa4+-) 13...Ng6 (13...Bb6 14.Nbd4 Nc6+-) 14.Nc5 Bg4 15.Nb3 Bf3 16.Bf3 Nh4 17.g3 Nf3 18.Qf3?? Qf3-+ 19.Rfe1 Qh5 20.Re4 Rae8 21.Re8 Re8 22.Bd4 Rf8 23.Be3 h6 24.Rd1 Qd1 (24...Qd1 25.Kg2 Qd3-+) 0–1. Fournier,Frederic (1835) – pedrocom (1700), Active blind, 2011.

4.cb4 Bb4–/+ 5.Nf3 Qe7 6.Bb5 a6 7.Bc4 Nf6 8.0-0 b5 9.Bb3 Bb7 10.d4 d6 11.de5 de5 12.Bg5 0-0 13.Nbd2 h6 14.Bh4 Nbd7 15.h3 g5 16.Ng5? hg5 17.Bg5 Kg7 18.Bf6?! Qf6 19.Qg4–/+ Qg6 20.Qd7 Be4?? 21.Ne4+= Qe4 22.f3 Qd4=+ 23.Qd4 ed4 24.Rad1 Rad8 25.Rd3 a5 26.Rfd1 Bc3 27.Kf1 a4 28.Bc2 a3 29.Kf2 Rfe8 30.g3 Rc8 31.Bb3 Re7 32.f4 Rce8 33.Kf3 Re2 34.h4 Rh2 35.Bd5 Ree2 36.Kg4 f6 37.f5 Rhf2 38.Rf3? Rf3?? 39.Bf3?? Ra2-+ 40.h5 Rh2 41.Rb1 b4 42.Kf4 a2 43.Rd1 a1Q 44.Ra1 Ba1 45.Ke4 b3 46.g4 b2 (47.Kf4 b1Q 48.h6 Kh6 49.g5 fg5 50.Ke5 d3 51.Kd5 Qb5 52.Kd6 Rc2 53.f6 Qb6 54.Bc6 Qc6 55.Ke7 Re2 56.Kf7 Qe8#) 0–1. bar (1905) – macedon (2065), net–chess.com, 2008.

4.c4 Bc5–/+ 5.d3?? (better is 5.Nf3–/+) 5...Bd4-+ 6.Qd2 (6.Bg5 f6 (6...Ba1 7.Bd8 Kd8 8.Qd2+/–; < 6...Qg5 7.Nf3 Qf6 8.Nd4 ed4 9.a3-+) 7.Nd2 fg5-+) 6...Ba1 7.Qb4 Nc6 8.Qa4 Bd4 9.Nf3 Qb6 10.Nbd2 (10.Qc2 Bf2! 11.Qf2 Qb1-+) 10...Bf2 11.Kd1 Nf6 12.Ba3 Ng4 13.h3 Ne3 14.Ke2 Nf1 15.Rf1 Bg3 (15...Qe3 16.Kd1-+) 16.c5 Qd8 17.Bb2 Qe7 (17...0-0 18.Nc4-+) 18.Nc4 Qc5 (18...0-0 19.Nd6 Bf4 20.g3-+) 19.Ng5 (19.Ba3 b5 20.Bc5 ba4 21.Nd6 Kf8 22.Nc8 Kg8 23.Nd6-+) 19...0-0 (better is 19...Nd4 20.Bd4 ed4 21.Rf5-+) 20.Ba3 Qd4 21.Nf3 (21.Bf8 b5! 22.Qb5 Kf8 23.Nf7-+) 21...Qc3 22.Rc1 (22.Bf8 Kf8 23.Qb3 Qb3 24.ab3 Ke7-+) 22...Nd4 23.Nd4 Qd4 (23...ed4 24.Rc3 dc3 25.Bf8 Kf8 26.Nb6+-) 24.Bf8 Kf8 (24...Qf2 25.Kd1 Kf8 26.Qb4 d6 27.Qd6 Ke8 28.Qb4 Qg1 29.Kc2 Qg2 30.Kb1-+) 25.Qa5 (25.Qa3 Kg8 26.Qe7 Qf2 27.Kd1 h6 28.Ne5 d6 29.Qe8 Kh7-+) 25...b6 26.Qa3 (26.Qd5 Qd5 27.ed5 Bf4-+) 26...Kg8 27.Nd6 (27.Rf1 d5 28.ed5 Qd5-+) 27...Ba6 (better is 27...Qf2 28.Kd1 Bf4-+) 28.Nf5 (28.Qa6 Qf2 29.Kd1 Qg1 30.Kc2 Qc5 31.Kd1 Qd6 32.Rc8 Rc8 33.Qc8 Qf8 34.Qd7-+) 28...Qf2 29.Kd1 Bf4 (29...Qe1 30.Kc2 Rc8 31.Kb3 Rc1 32.Qb2 Bd3 33.Qc1 Qc1 34.Nh6 gh6 35.h4 Qc2 36.Ka3 Qc3 37.Ka4 b5) 30.Ne7 Kh8 31.Qc3 Bc1 (31...Qf1 32.Kc2 Qc1 33.Kb3 Qb1 34.Qb2 Qd3 35.Qc3 Qb1 36.Ka3 Bc1 37.Qc1 Qc1 38.Kb3 Bc4 39.Ka4 Qc2 40.Ka3 Qa2 41.Kb4 Qb3) 32.Kc1 Re8 (better is 32...Qe3 33.Kb2 Bd3 34.Ka3 Qe4 35.Nc8-+) 33.Nf5 (33.Qe5 Qe3 34.Kb2 Qd2 35.Kb3 Qd3 36.Kb2 Qe2 37.Kc1 Qc4 38.Kb1 Qb4 39.Kc1 Qe7 40.Qe7 Re7 41.g3-+) 33...Rc8 (34.Qc8 Bc8-+) 0–1. ricar67 – rookie2, ChessWorld.net, 2004.

4.Nf3!? =+.

3.Na3 d5 4.Nf3 e4 5.Nd4 Nf6 6.g3 Bd6 7.Bg2 h5 (7...0-0 8.0-0=+) 8.0-0 (8.d3 a5 9.b5 h4 10.bc6 Nc6=+) 8...h4 9.d3 hg3 (9...h3 10.Bh1 ed3 11.Qd3=+) 10.hg3 (10.fg3 Ng4 11.de4 Nh2-/+) 10...Qd7 (10...a5 11.Nac2=+) 11.Bg5 (11.de4 Ne4 12.Qd3 f5=) 11...Qg4 12.Bf6 gf6 13.Nac2?? (13.de4 Qh5 14.Nf3=+) 13...Qh5-+ 14.Re1 (14.f4 Qh2 15.Kf2-+) 14...Qh2 15.Kf1 Bh3 16.Ne3 Bg2 (16...Bg2 17.Ng2 Qh1; 16...Qh1) 0-1. walker001 (1680) - cabellero (2870), ChessWorld.net, 2018.

3.a4 a5 4.b5 cb5 5.ab5 b6 6.Ba3 Ba3 7.Na3 Nf6 8.g3 Bb7 9.f3 e4 10.e3 0-0 11.f4 d5 12.Bh3 Nbd7 13.Bd7 Qd7 14.Ne2 Qh3 15.d4 (15.Kf2!?–/+) 15...Ng4-+ 16.Kd2 Nf2?? (better is 16...Nh2 17.Kc1 Qg2-+) 17.Qg1?? (17.Qf1 Qf1 18.Rhf1= (18.Raf1? Nh1 19.Rh1 Rfc8-+)) 17...Nh1-+ 18.Qh1 Qd7 19.h4 h5 20.Ng1 Bc8 21.Ne2 Qg4 22.c4 Be6 23.cd5 Bd5 24.Rc1 Be6 25.Rc6 Rab8 26.Qc1? Rfc8 27.Qc2 Bd5 28.Rc8 Rc8 29.Qb2 Bc4 30.Nc4 Rc4 31.d5 Rb4 32.Qc3 Rb5 33.d6 Rd5 34.Nd4 Rd6 35.Qc7 Qd7 36.Qd7 Rd7 37.Kc3 Rc7 38.Kb3 Rc5 39.f5 Rc1 40.Ka4 Rb1 41.Nc6 f6 42.Ne7 Kf7 43.Ng6 Rb4 44.Ka3 b5 45.Nf4 Rc4 46.Nh5 Rc3 47.Kb2 Re3 48.Nf4 Rg3 49.Nd5 b4 50.Nf4 Rf3 51.Nd5 Rf5 52.Kb3 Rd5 53.Ka4 e3 54.h5 e2 55.Kb3 e1Q 56.h6 Qc3 57.Ka4 Qa3# 0–1. maddoxdb – jimedward, gameknot.com, 2012. (=1.c3 e5 2.b4 c6)

3.Nf3 d5 4.Ne5= Bd6 5.d4 Be5 6.de5 Bf5 7.Qd4 Ne7 8.Nd2 0-0 9.f3 Ng6 10.e4 Be6 11.ed5 Bd5 12.c4 Be6 13.Nb3 Nd7 14.f4 Nb6 (14...f6 15.ef6 Rf6 16.Bd3=) 15.Qc3 Qc7 (15...Qh4 16.g3 Qe7 17.Nd4+=) 16.Bd3 Ne7 (16...Na4 17.Qc2 Rfd8 18.Be3+/–) 17.Qc2+- g6 18.Nd4 Rad8 19.Be3 Rd4? 20.Bd4 Rd8 21.Bc5 Nf5 22.Rd1 Nd4 23.Qf2 Nf5 24.Bb6 Qb6 25.Qb6 ab6 26.Ke2 Nd4 27.Ke3 Nf5 28.Bf5 Rd1 29.Rd1 Bf5 30.Rd8 Kg7 31.Rb8 Bb1 32.a4 Ba2 33.Kd4 b5 34.ab5 cb5 35.cb5 Bd5 36.Kd5 1–0. guest488 – guest797, ICC, 2003.

3.Nf3 Nf6 4.Ne5 d6 5.Nc4 d5= 6.Ne3 Nbd7 7.f3 Bd6 8.Nf5 Ne5 9.Ng7 Kf8= 10.Nf5?? Bf5-+ 11.d4 Bb1 12.de5= Be5 13.Rb1 Bc3 14.Bd2 Bd2 15.Qd2 Qd6 16.g4 Re8 17.b5 d4 18.g5 Nd5 19.Qd4+= Rd8?? 20.Qh8+- Ke7 21.Qh7 cb5 22.Qe4 Kd7 23.Bh3 Kc6 24.Rc1 Kb6 25.Qd4 Ka6 26.a4 Nf4 27.ab5 Kb5 28.Rb1 Kc6+- 29.Rc1 Kb5 30.Qb2 Qb4+- 31.Qc3 a5 32.0-0 Nh3 33.Kg2 Nf4 34.Kh1 Ne2 (35.Qe5 Ka6+-). bjhaskins (1670) – mpasternik, net–chess.com, 2004.

3.g3 a5 4.Qa4 b5 5.Qc2 d5 6.h4 ab4-+ 7.cb4 Bb4 8.Nf3 e4 9.Nd4 Qb6 10.e3 Ne7 11.h5 0-0 12.a4 ba4 13.Ra4 Ra4 14.Qa4 c5 15.Nb5 Bd7 16.Qa7 Qa7 17.Na7 Nbc6 18.Bb2?? Na7 19.Rh4 Rb8 20.Bh3 Bh3 21.Be5 Ra8 22.h6 Ng6 23.Nc3 Nh4 24.gh4 f6 25.Bd6 Nb5! 26.Nb5 Ra1 0–1. Rettkowski,Marcel – Fiedler,Peter, remoteschach.de, 2002.

4.a4 Nf6 5.b5 Bd6 6.Ba3 c5 7.f3 0-0 8.Qc2 a6 9.Bd3 Qa5 10.c4 ab5 11.ab5 d4 (11...dc4 12.Bc4 Qc7 13.Ne2+=) 12.ed4 cd4 13.Bb2 (worse is 13.Bd6 Qa1 14.Bf8 Kf8+=) 13...Qa1 14.Ba1 Ra1 15.Ne2 Nbd7 16.0-0 Nc5 17.Bf5 g6 18.Bc8 Rc8 (better is 18...d3!? 19.Qc3 de2+=) 19.d3 Nfd7 20.Ng3 f5 21.Nd2 (better is 21.Qd2!?=) 21...Ra3+= 22.Qb2 Rd3 23.Ra1 e4! 24.Ra7 (24.fe4 Bg3 Discovered attack) 24...e3 25.Ndf1 Bg3 26.hg3 Ne5 (26...Nb6 27.Qe2 Rc3 28.Kh2-+) 27.Qa2 Kg7 28.Ra8?? (better is 28.f4 Nc4! 29.Qc4-+) 28...Ra8 29.Qa8 e2 (29...Nc4?! 30.Qe8 b6 31.Qe7 Kg8 32.Qe8 Kg7 33.Qe7 Kg8 34.Qe8 Kg7=) 30.Qe8 e1Q (better is 30...Re3 31.Qe7 Nf7 32.Qc5 Re6 33.Qd4 Kg8-+) 31.Qe7= Kh6 32.Qf8?? (better is 32.Qh4 Kg7 33.Qe7 Nf7 34.Qe1=) 32...Kh5-+ 33.Qc5 (33.Qf6 g5 34.Qf5-+) 33...Nf3 (33...Rf3 34.g4 Ng4 35.Qf5 Rf5 36.c5 Rf1) 34.Kh1 Qf1# 0–1. maddoxdb – briancioffi, gameknot.com, 2011. (=1.c3 e5 2.b4 c6 3.e3 d5)

4.Qb3 e4 5.b5 Qd6 6.bc6 Nc6 7.Ba3 Qf6 8.Qd5 Ba3 9.Na3 Bf5 10.Bb5 Nge7 11.Qc4 0-0 12.Bc6 bc6 (worse is 12...Qc6 13.Qc6 bc6 14.f3+=) 13.Ne2 Rab8 14.0-0 Qg5 15.Nf4 h6 (15...Ng6!?=) 16.g3 1–0. maddoxdb – marcovarnhem, gameknot.com, 2012. (=1.c3 e5 2.b4 c6 3.e3 d5)

4.d4 e4 5.a4 Nf6 6.Be2 Be6 7.Nd2 Bd6 8.Nf1 Nbd7 9.h4 Qc7 10.Nh3 h6 11.Nf4=+ Nf8 12.Bd2 Ng6 13.Nh5?? Nh5–/+ 14.Bh5 Qe7 15.g3 Qf6 16.a5 Ne7 17.Bc1 Bc7 18.Qc2 g5 19.Be2 gh4 20.Rh4= Rg8 21.Rh1 Rg5 22.b5 Bd7 23.a6= b6 24.bc6 Bc6 25.Ba3 Bd6 26.Bd6+= Qd6 27.Qb3 Rc8 28.Nd2 Qe6 29.Nb1 (29.Rc1 Kd8+=) ½–½. Ziese,Gerhard – Springer,U, corr SOK–90–68, 1990.

4.Nf3 e4 5.Nd4 +=.

4.Nf3 Be6 5.d3 (better is 5.Ne5!? Bd6 6.Nf3+=) 5...Bd6+= 6.Be2 Nd7 7.Nbd2 h6 8.Bb2 Ne7 9.a3 a6 10.0-0 0-0 11.Qc2 Qc8 12.e4 d4 (better is 12...c5=) 13.cd4+/– ed4 14.Rac1 b6 15.Nb3 (15.Nd4 Bf4+-) 15...Ra7? (better is 15...c5=) 16.Nbd4+- c5 17.Ne6 fe6 18.bc5 Bc5?? (better is 18...bc5 19.Qb3 Kf7+-) 19.d4 Bd6 (19...Ng6+-) 20.Qc8 (better is 20.Qb3 Bc7 21.Qe6 Rf7 22.Bc4+-) 20...Rc8 21.Rc8 Nc8 22.Rc1 Ne7 23.Rc2 Rc7? 24.Rc7 Bc7 25.d5?? ed5+= 26.ed5 Bd6? 27.h3?? b5= 28.Bd1 Nb6 29.Bb3 Ned5 30.Bd5 Nd5 31.g3 a5 32.Bc1 b4 33.ab4 Bb4 34.Bb2 Nc3 35.Nd2 Kh7 36.g4 Nb5 37.Ba1?? Bd2-+ 38.Kg2 Bb4 39.f3 Nd6 40.h4 g5 41.hg5 hg5 42.Bf6 Kg6 43.Bg5 Ne4 44.fe4 Kg5 45.Kf3 Bd6 46.Ke2 Kf6 47.Kd1 Be5 48.Kc1 Bd6 49.Kb2?? Kg6 50.Kb3 Be7 51.g5? Bg5 52.e5 Be7 53.e6 Bb4 0–1. Fournier,Frederic (1810) – REVELO (1970), Active Blind, 2011.

4.Bd3 de4 5.Be4 Qh4 6.Qc2 Nf6 7.d3 Ng4 (better is 7...Ne4!? 8.de4 Qg4+=) 8.h3= Nf6? (better is 8...f5!? 9.Bf3 Nh6=) 9.g3+/– Qh5 10.Bf3?? (better is 10.g4 Bg4 11.hg4 Qg4 12.Bf3+-) 10...Qg6+= 11.g4 Nd5 12.Be4 Qd6 13.Bd5 (better is 13.Nd2!?=) 13...Qd5–/+ 14.f3 Be7 15.a4 0-0 16.Ne2? (better is 16.Be3–/+) 16...Qf3-+ 17.Nd2 (17.Rg1-+) 17...Qh1 (17...Bh4 18.Kd1 Qh1 19.Ng1 Qg1 20.Ke2 Qf2 21.Kd1 Qe1) 18.Nf1-+ Bh4 19.Kd2 Qf1 20.Bb2 Bg5 21.Nf4 Bf4 0–1. maddoxdb – avadakedavara, gameknot.com, 2012. (=1.c3 e5 2.b4 c6)

4.ed5 cd5=.

4.f3 b5 5.a4= Ba6 6.a5 (better is 6.Na3!?+=) 6...d5+= 7.Bd3 d4 (7...de4!? 8.Be4 Ne4 9.fe4 Qh4 10.Kf1 Qe4–/+) 8.Qe2 Nbd7 9.g4 g5 10.Qf2 h5 11.Qg2 h4 (11...hg4 12.fg4 c5 13.Nh3–/+) 12.h3 Bd6 13.Bb2 dc3 14.Bc3? (better is 14.dc3!? Qe7 15.Na3+=) 14...c5 15.bc5 Bc5 16.Ne2 Qe7 17.Nc1 Nb8 (better is 17...Qe6!?–/+) 18.Qf1 b4 19.Bb2 (better is 19.Ba6!? bc3 20.Nc3+=) 19...Bd3 20.Nd3 a6 (better is 20...Nc6–/+) 21.Ne5+/– (worse is 21.Be5 Nc6 22.Bf6 Qf6=) 21...Nc6?? (better is 21...Bd6 22.d4 Nbd7+=) 22.Nc6+- Qc7 (22...Qd6 23.d4+-) 23.Bf6 Qg3 (23...Rh6 24.Nb4! Qg3 25.Kd1 Rf6+-) 24.Ke2 Qf4 (24...Qd6 25.Bh8 Qc6 26.d4+-) 25.Bh8 Kd7 26.Ne5 (better is 26.Be5 Kc6 27.Bf4 gf4+-) 26...Ke6 27.Bg7 Rd8 28.Qc1 Be3 29.Qc4 Ke7 30.Qc7 Ke8 31.Ng6 (31.de3 Rd2 32.Kd2 Qe5 33.Qe5 Kd7 34.Rc1 b3 35.Rc7 Kd8 36.Bf6) 31...Qc7+/– 32.de3?? (better is 32.Ke3 fg6 33.Bb2+/–) 32...Qc2 33.Nd2 Qd2 (33...Rd2 34.Ke1 Rg2 35.Nf4 Qd2 36.Kf1 Qf2) 34.Kf1-+ Qe3 35.Rh2 Qf3 36.Rf2 Qh1 37.Ke2 Qe4 38.Kf1 Qh1 39.Ke2 Qh3 40.Ne5 Qc3 41.Nf7 Rd2 42.Kf1 Qd3 43.Kg2 Qg3 44.Kf1 Qf2 0–1. maddoxdb – braeburn, gameknot.com, 2013. (=1.c3 e5 2.b4 c6)

4.f3 d5!? –/+.

4.Qf3 d5=+ 5.ed5 cd5 6.Bb5 Nc6 7.h3 a6 8.Ba4 Bd7 9.Qe2 b5 10.Bb3 a5 11.ba5 Na5 12.Qe5= Be7 13.Nf3?? Bc6 14.0-0?? 0-0 15.Qe1?? Nb3-+ 16.Ne5 Bb7 17.Bb2 Na1 18.Ba1 Ra2 19.Bb2 Rb2 20.Nd3 Ra2 21.f3 Qd6 22.g3 Qc6 23.Qe7 Ra1 24.Ne5 Qe6 25.Qb7 Qe5 26.Kf2 Re8 27.Qb5 Qf5 28.Kg2 Qe5 29.c4?? Qe2 30.Kg1 Qc4 31.Qc4 dc4 32.g4 Rb8 33.g5 Rbb1 34.Rb1 Rb1 35.Kf2 Ne8 36.Ke2 f6 37.g6 hg6 0–1. novice1234 – chestnut_1, ChessWorld.net, 2009.

4.Nd4 a6 5.d3 ed3 6.ed3+= Nf6 7.Qe2 Be7 8.Nf5 d5 9.Ng7+/– Kd7 10.Bf4 Bd6 11.Bg5 Re8?? 12.Ne8+- Qe8 13.Bf6 Qe2 14.Be2 Kc7 15.Nd2 Bf5 16.Bd4 Nd7 17.g4 Bg6 18.Nf3 Re8 19.Kd2 Kb8 20.h4 Bf4 21.Kd1 h5 22.gh5 Bh5 23.Ng1 Bg3 24.fg3 Bf3 25.Nf3 Re5 26.Ne5 f6 27.Nd7 Ka8 28.h5 (28…b5 29.h6 c5 30.h7 a5 31.h8Q Kb7 32.Nc5 Kb6 33.Qc8 ab4 34.Nb3#) 1–0. guest569 – guest1728, ICC, 2003.

4.Nd4 d5 5.d3 f5 6.Bf4 Nf6 7.e3 a5 8.b5 c5 9.Nf3?? (Better is 9.Ne2=) 9...ef3-+ 10.Qf3 Bd6 11.Be2 0-0 12.d4 c4 13.0-0 (13.a4 Ne4-+) 13...Ne4 (13...Bf4 14.ef4 a4 15.Na3-+) 14.Re1 Bd7?? 15.Bd6+= Nd6? 16.Qd5+- Nf7 17.Qb7 Bb5 18.Qa8 Bc6 19.Qa7 Nd6 20.Qc5 Be4 21.Nd2 Qg5 22.Ne4 Ne4 23.Bc4 Kh8 24.Qf8# 1–0. marekt (2005) – benhawkes (1840), ICC, 2003.

3.a3 Bb4?? 4.ab4+- Nd4?? (4...d6+-) 5.cd4 ed4 6.Bb2 Qe7 7.Nf3 d3 (7...Nf6 8.Bd4 Qb4 9.Nc3+-) 8.Nc3 (better is 8.Bg7 f6 9.Bh8 Qf8+-) 8...Qe2 (8...f6+-) 9.Be2 de2 10.Qe2 Ne7 11.0-0 (11.Nd5 0-0 12.Ne7 Kh8+-) 11...b6 12.b5 (12.Nd5 0-0 13.Ne7 Kh8 14.Bg7 Kg7 15.Nf5 Kg8 16.Qe7 h6 17.Qf6 a5 18.Qg7) 12...Bb7 13.d4 (13.Rfe1 0-0 14.Qe7 Bf3 15.gf3 c6+-) 13...0-0-0 14.Rfe1 (better is 14.Qe7 Rde8 15.Qf7 Rhf8+-) 14...Bf3 15.Qf3 Rde8 16.Ra7 (16.Qa8) 16...d5 17.Raa1 (17.Qg3 Kd8 18.Qc7) 17...Nc6 18.bc6 Re1 19.Re1 (19.Re1 h6 20.Qe2 Kb8 21.Qa6 Re8 22.Re8) 1–0. Fournier,Frederic (1930) – Borromeo, Active Blind, 2008.

3.Ba3 Bd6 4.b5 Nce7 5.g4 b6 6.e3 Ba3 7.Na3 d6 8.Nh3 Nf6 9.Bg2 Bg4–/+ 10.f3 Bh3 11.Bh3 0-0 12.Rg1 e4 13.Rg5 ef3 14.Qf3–/+ h6 15.Rg3 Qc8?? 16.Bc8+- Rac8 17.Qb7 Ned5 18.Qa7 Ne4 19.Rf3 Ng5?? 20.Rf5 Ne7 21.Qb7 Nf5 22.Qd5 Ne7 23.Qd3 Nf3 24.Kf2 Nh2?? 25.Rh1 Ng4= 26.Ke2 Ne5 27.Rh5?? Nd3-+ 28.Kd3 c6 29.Nc4 cb5 30.Nb6 Rc6 31.Rb5 Ra8 32.Na8= Ra6 33.Rb8 Kh7 34.Nc7 Ra2 35.Ne8 h5?? 36.Nd6 f6 37.Nf7 h4= 38.Rh8 Kg6 39.Nd6 Ra4 40.Re8 Nf5=+ 41.e4?? Nd6-+ 42.e5 fe5 43.Re6 Kf5 44.Rd6 Rg4 45.c4?? h3 46.Ra6 Rg1 47.c5 h2 48.Ra7 h1Q 49.c6 Qd5 50.Kc2 Rg2 51.Rf7 Ke6 52.Rf8 Rd2 53.Kc3 Qd4 54.Kb3 Rb2 55.Ka3 Qb4 0–1. jrich – islanderfan, net–chess.com, 2002.

3.Ba3 Nf6 4.Qa4 Be7 (4...e4 5.b5 Ba3 6.Na3–/+) 5.d3 (5.b5 Nb8+=) 5...Nd5 (5...0-0 6.Nf3–/+) 6.g3 (6.b5 Ba3 7.Na3 Nce7+= (worse is 7...Nc3 8.Qb3 Nb5 9.Nb5+/–)) 6...Bg5 (better is 6...b5!? 7.Qb3 Nf6–/+) 7.Bg2 Nb6 8.Qb3 0-0 9.Qc2 (9.b5 Ne7=) 9...d6 10.d4? (10.Nf3!?=) 10...Nc4 (better is 10...ed4 11.b5 Ne5 12.cd4 Nec4–/+) 11.Bf1?? (better is 11.Nf3!? Bf6 12.b5+=) 11...Bg4 (better is 11...ed4 12.b5 N6a5-+ (12...Na3 13.Na3 d3 14.ed3 Re8 15.Be2-+)) 12.e3 Na3 13.Na3 Qf6 (better is 13...ed4 14.b5 Ne7 (14...de3 15.bc6 bc6 16.Be2+=) 15.cd4 c5-+) 14.f3?? (14.b5 ed4 15.bc6 de3 16.f3+=) 14...Bh6 (14...Bf3 15.de5 Ne5 16.Nf3 Nf3 17.Kd1-+) 15.Qe4?? (better is 15.fg4 ed4 16.ed4 (worse is 16.cd4 Be3 17.Qg2 Rfe8-+) 16...Rfe8 17.Be2 Nd4 18.cd4 Qd4 19.Rd1 Qb4 20.Kf1 Qa3 21.Nf3+/–) 15...Qg5 (15...Bf5 16.de5 de5-+ (16...Be4?! 17.ef6 Bf5 18.e4=)) 16.Bd3?? (better is 16.fg4!? ed4 A) 17.cd4? Rae8 18.h4 Qf6-+ (18...Re4 19.hg5 Re3 20.Ne2 Ra3 21.gh6+=); B) 17.Nh3 Qe3 18.Qe3 Be3 19.b5+/–) 16...g6 (better is 16...f5 17.h4 fe4 18.Bc4 Kh8 19.hg5 ef3 (worse is 19...Bg5 20.fg4 Be3 21.d5+=) 20.gh6 f2 21.Kf1 fg1Q 22.Kg1 gh6 23.Rh6 Rf3+=) 17.Nb5?? Rac8 18.f4?? Qh5 19.d5? Ne7 20.Na7 Bf5 21.Qc4 Bd3 22.Qd3 Ra8 23.Nb5–/+ ef4 24.gf4? Qh4?? 25.Kf1 Nf5 26.Nc7 Ra3 27.Nf3+= Qh3 28.Kf2 Bf4? 29.ef4+- Nh4 30.Nb5?? Qg2-+ 31.Ke3 Re8 32.Kd4 Qf2 33.Kc4 Raa8 34.Nc7 Re3?? 35.Qb1 Rc8 36.Nh4 Rc7 37.Kb3 Rcc3 38.Ka4 Qe2 39.b5 Ra3 40.Kb4 Qd2 41.Kc4 Qc3 0–1. Cabral,ME Felix – Isis Blanco,M, Juiz de Fora BRA, World Schools Ch U09g, 2014. (=1.c3 e5 2.b4 Nc6)

3.Qb3 d5 4.Bb2 Be6 5.d4 f6 6.Nf3=+ e4 7.b5?? Na5-+ 8.Qa4 c6?? 9.Nh4? cb5 10.Qc2? f5 11.g3 g5 12.Ng2–/+ Qc7 13.e3 Ne7 14.Bb5=+ Nec6 15.h4 g4 16.Nf4 Qd6 17.Ba3 Qd7 18.Qa4 Nc4 19.Bf8 Rf8 20.Qd1 0-0-0 21.Nd2 Rf6 22.h5 Qc7 23.Nb1 Qa5 24.a4 Nb2 25.Qe2+/– Nc4 26.h6 a6 27.Ne6 Re6 28.Bc4 dc4 29.Rh5 Ne7 30.Rg5 Rg8?? 31.Qc4+/– Kd7 32.Qc5?? Qc5-+ (33.Rg8 Qc4-+ (33...Ng8?! 34.dc5 Rc6 35.Nd2–/+)) 0–1. ifairclough – quikeagle, net–chess.com, 2001.

3.b5 Na5 4.Qa4= b6 5.Qe4+= Qe7?? 6.Qa8+- Qd8 7.Qa7 Bc5 8.e3 d5 9.d4 Bd6 10.de5 Be5 11.Nf3 f6 12.Ne5 Qe7 13.Nd3 Nh6 14.Qa8 Qd7 15.Nf4 0-0 16.Qd5 Qd5 17.Nd5 Rf7 18.e4 c6 19.bc6 Nc6 20.Bh6 gh6 21.Nd2 Kg7 22.Rb1 Ne5 23.Rb6 f5 24.f4 Ng4 25.e5 Rd7 26.c4 Ra7 27.h3 Ra2 28.hg4 Ra1 29.Nb1 Kf7 30.Rhh6 Kg7 31.Rhc6 Bd7 32.Rc7 (32…Kf8 33.Rd7 Ra8 34.e6 Rc8 35.Rf7 Ke8 36.Nf6 Kd8 37.Rd7#) 1–0. Iwan – Michal Piszczalka(piszczyk), internet, 2009.

3.b5 Nce7 4.a4 Ng6 5.Ba3 d6 6.Bb2 Nf6 7.h4 Be7 (7...Bg4 8.c4-/+) 8.h5=+ Nf8 9.g3 h6 10.Bg2 Ne6 11.a5 a6 12.ba6 (12.c4 0-0-/+) 12...Ra6 13.Nf3 c6 14.Qa4 (14.d4 ed4 15.Nd4 Ra5 16.Bc6 bc6 17.Nc6 Qb6 18.Na5 Qb2-+) 14...0-0 15.0-0 (15.d4 e4 16.Nfd2 b5-/+) 15...Nh5-+ 16.d4 e4 17.Nfd2 d5 18.c4 e3! 19.fe3 Ng3 20.Rf3 Nh5 21.Bc3 (21.cd5 cd5 22.Qb5 Nf6-+) 21...f5 (21...Ng5 22.Rf2-+) 22.Na3 (22.cd5 cd5 (worse 22...Qd5 23.Rh3 Qd6 24.Rh5+/-) 23.Qb5 Ng5-+) 22...Ng5 23.Rf2 Bd6 (better 23...Nf6!? 24.cd5 Qd6 25.dc6 Qg3-+ (worse 25...bc6 26.Rf4-/+)) 24.cd5-/+ cd5 (24...Bg3 25.Rff1 cd5 26.Bb4-+) 25.Bd5 Kh8 26.Raf1?? (better 26.Bg2!?-/+) 26...Bg3 (26...Nh3 27.Kh1 Nf2 28.Rf2 Bg3-+) 27.Rg2?? (27.Bg2-+) 27...Qd5 (27...Nh3 28.Kh1 Qh4 29.Rh2 Bh2 30.Qb4 Bd6 31.Qd6 Rd6 32.Rf5 Rf5 33.Bg2 N3f4 34.Bh3 Qh3 35.Kg1 Ne2) 28.Qb4 (28.Nac4 Rd8 29.Nb6 Qe6-+) 28...Rg8 (better 28...Bd6 29.e4 Bb4 30.ed5 Bc3 31.Nb3-+) 29.Nac4 (29.Qb5 Qb5 30.Nb5 Bd7-+) 29...f4 (29...Bc7 30.Rf3-+) 30.Nb6 Rb6! 31.Qb6 (31.ab6 Nh3 Double attack; 31.Qb6 Nh3 Double attack) 31...fe3 32.Nf3 (32.Qb3 Bf2 33.Rgf2 Nh3 34.Kh2 Qd6 35.Rf4 N3f4-+) 32...Nh3 (32...Nf4 33.Rg3 Ne2 34.Kg2 Ng3 35.Kg3-+) 33.Kh1 N5f4 (33...N3f4 34.a6-+) 34.Rg3 Ne2 35.Rg2 Kh7 (better 35...Nhf4 36.Qc5 Qc5 37.dc5 Ng2 38.Kg2 Nc3-+) 36.Qb1?? (better 36.Re2 Re8 37.Rg2+-) 36...Bf5-+ 37.Qe1 Nef4 (37...Nhf4 38.Re2 Be4-+) 38.Qg3? (38.Qe3 Bd3 39.Re1-+) 38...Ng2 39.Kg2 Be4 (better 39...Rc8 40.Be1 Rc2 41.Kh1 e2-+) 40.Rh1?? (40.Kh3 Qh5 41.Nh4-+) 40...Ng5 41.Qg5 Qg5 42.Kf1 Qf5 (42...Bf3 43.Rh2 Qb5 44.Re2 Qe2 45.Kg1 Qf2) 43.Ke1 (43.Rh6 gh6 44.Ke1 Qf3 45.a6 Rg1) 43...Qf3 (43...Bf3 44.Rh6 gh6 45.Kf1 Qd3 46.Ke1 Rg1) 44.Rh6 (44.Rh2 Bd3 45.Rh6 gh6 46.a6 Rg1) 44...Kh6 (44...gh6 45.a6 Rg1) 45.Bd2 (45.d5 Bc2 46.Bg7 Kg7 47.a6 Qf2) 45...Qf2 46.Kd1 Qd2 0-1. bikhial (2270) - Slavik11 (2645), Rated Bullet game, lichess.org, 2014. (=1.c3 A00: Irregular Openings 1...Nc6 2.b4 e5)

3.d3 d6 4.g3 Nf6 5.Bg2 d5 6.Bg5 Be7 7.Nf3 h6 8.Be3 a6 9.0-0 d4 10.cd4 ed4 11.Bd2 Nb4?? 12.Bb4+- Bb4 13.a3?? Bd6 14.Nd4 Be5–/+ 15.e3 c5 16.Bb7?? Bb7 17.Qa4 Qd7 18.Qd7 Kd7 19.Nb3 Ba1 20.Nc5 Kc6 21.Nb3 Be5 22.d4 Bd6 23.Na5 Kc7 24.Rc1 Kb8 25.Nb7 Kb7 26.a4 a5 27.f3 Bb4 28.Rc4 Rac8 29.Rc8 Rc8 30.Kf1 Rc1 (31.Ke2 Rb1-+) 0–1. bar (1905) – tata (2000), net–chess.com, 2008.

3.d4 ed4 4.b5 Ne5 5.cd4 Nc4 6.Qb3 d5 7.e4 Be6 8.Nc3 de4?? (Better is 8...Nb6 9.e5 Ne7=) 9.Bc4+- Qd4 10.Be6 fe6 11.Qe6 Ne7 12.Nge2 (12...Qd7 13.Qe4+-) 1–0. Marre – lewyprawy, zagraj.pl, 2003.

3.d4 h5 4.b5 Na5 5.de5 Qe7 6.Nf3 d6 7.Qa4 b6 8.Ba3 f6 9.ed6 cd6 10.Bd6!! Qd6 11.Qe4 (11...Kf7 12.Qa8+-) 1–0. miehnekort – fahman_strococaster74, Yahoo, 2005.

3.e3 a6 4.Bc4 b5 5.Bd5 Bb7 6.Qf3 Nf6 7.Bb3 Rb8 (Better is 7...a5-+) 8.d4? (Better is 8.Qg3=+) 8...Nb4!-+ 9.Qg3 Nd3 10.Kd2 Nf2!! 11.Qf2 Ne4 12.Ke2 Nf2 13.Kf2 Qf6 14.Nf3 e4 15.Nbd2 ef3 16.Nf3 Be4 17.c4 bc4 18.Bc4 Bb4 19.Ba6 Bc3 20.Bd2 Ba1 21.Ra1 Rb2 22.Ke2 Bf3 23.gf3 Qa6 0–1. Kunk – PassedPawn, ChessWorld.net, 2003.

3.e3 Bb4?? 4.cb4+- Nb4 5.Nc3 d5 6.a3 Nc6 7.Nf3 Bf5 8.Be2 Nd4?? 9.ed4+- ed4 10.Nd4 Qe7 11.Nf5 0-0-0 12.Ne7 Ne7 13.0-0 Nf5 14.Bf3 Ng3 15.hg3 Rhe8 16.Re1 Re1 17.Qe1 Re8 18.Qf1 Re1 19.Qe1 f5 20.d4 g6 21.Bf4 h5 22.Rb1 b5 23.Nd5 c6 24.Nc7 (24.Nc7 g5 25.Qe6 Kb8 26.Na6 Kb7 27.Qc6; 24.Qe6 Kb7 25.Rb5 cb5 26.Nf6) 1–0. Fournier,Frederic (1825) – angelbetico (1700), Active blind, 2011.

3.e3 g6 4.Nf3 Qe7 5.d3 Bg7 6.Be2 Nf6 7.Bb2 0-0 8.Nbd2 Nb8 9.0-0 c6 10.a3 d5 11.Rc1 a6 12.Qc2 b5 13.e4 de4 14.de4 Bb7 15.Rfd1 Nbd7 16.Bf1 Rfd8 17.Qb1 (17.c4 Ra7+=) 17...Nf8 (better is 17...c5!?+=) 18.c4+= Ne6 (18...N8d7 19.Qc2+=) 19.c5 (19.Be5 Ng5 20.Qb2 Nf3 21.Nf3 Rd1 22.Rd1 c5+/–) 19...Rd7 (19...Nd4 20.Bd3+=) 20.h3 (20.Ne5!? Rdd8 21.Nb3+-) 20...Rad8+= 21.Nb3 Rd1 22.Rd1 Rd1 23.Qd1 Qd8 24.Qd8 Nd8 25.Bd3 Ne6? (25...Nd7 26.Kf1+=) 26.Bb1 Bc8? 27.g3 Bd7? 28.Ne1 Nd8 29.Kg2 Nb7? 30.f3 Bf8? 31.Nd3 Be7 32.Nf2?? Bd8? 33.g4 a5? 34.Bc3 ab4+/– 35.ab4 Ne8? 36.Be1 Bg5 37.Na5 Na5 38.ba5 Bc8 39.Bd3 Nc7 40.a6?? Na6-+ 41.Nd1 Nc7 42.Nc3 Be6 43.Bf1 Ne8 44.Na2?? Ba2 0–1. Fournier,Frederic (1860) – klamm (1975), Active blind, 2011.

3.Nf3 d5 4.g4?? (better is 4.b5 e4 5.bc6 ef3 6.cb7 fg2 7.ba8Q gh1Q 8.Qa4 Bd7 9.Q4a7+=) 4...Bg4-+ 5.Rg1 Nh6 (better is 5...Bf3 6.ef3 Qh4-+) 6.b5+= e4 (better is 6...Ne7 7.Ne5 Be6+=) 7.Ba3?? (better is 7.bc6 ef3 8.cb7+=) 7...ef3-+ 8.h3?? (better is 8.bc6 bc6 9.e3-+) 8...fe2 9.Be2 Ne5 10.hg4 Qh4 11.c4? Qh2 12.f3?? Qg1 13.Bf1 Nd3 14.Ke2 dc4 15.Qc2 Qf2 16.Kd1 Qe1# (16...Qf1#) 0–1. Rohn,Kat (2000) – Ch,Da (1950), remoteschach.de, 2008.

3.Nf3 e4 4.Nd4 Nd4 5.cd4 Bb4 6.e3 d5?? (6...Nf6 7.Qb3 a5 8.Nc3–/+) 7.Be2?? (7.Qa4 c6 8.Qb4 Qe7 9.Qe7 Ne7+-) 7...Nf6?? 8.0-0?? 0-0–/+ 9.d3 Bf5 10.de4 Ne4 11.Bd2 a5 12.f3 Nd2 13.Nd2 Bc3 14.Rc1–/+ Bb2 15.Rc5 b6 16.Rb5 Ba3 17.e4 Be6 18.Qb3 c6 19.Rb6 de4 20.Qb1 Qd4 21.Kh1 Qd2 22.Qd1 Qd5 23.fe4 Qe4 24.Ra6 Ra6 25.Ba6 Bd5 26.Rf2 Ba2 27.h3 Bc5 28.Re2 Bb3 29.Qb3 a4 30.Qc2 Qd4 31.Re1 f5 32.Bb7 Rf6 33.Qd1? a3 34.Qb3 Kf8 35.Re6?? Qg1# 0–1. Geordiedazza – Hammi.Bogart, ChessWorld.net, 2003.

4.a5 a6 5.e3 h6 6.Qb3 d6 7.b5 Ne7 8.b6 cb6 9.Qb6 Qb6 10.ab6 Ned5 11.Bd3 Be7 12.Ne2 Nb6 13.Ng3 0-0 14.Bf5 Bf5 15.Nf5 Nbd5 16.c4 Nb4?? (16...Rfc8 17.Na3 g6 18.Nh6 Kg7 19.cd5 Kh6 20.d3–/+) 17.0-0?? (better is 17.Ne7 Kh7 18.Ke2+-) 17...Rfe8–/+ 18.Ba3 Nc2 19.Ra2 Na3 20.Na3 d5 21.Ne7 Re7 22.cd5 Nd5 23.Rb2 b5 24.g3 b4 25.Nc4 Rb7 (25...e4!? 26.f3 ef3 27.Rf3-+) 26.e4 Nf6 27.Ne5 a5 28.d4 (better is 28.f3!?–/+) 28...Ne4-+ 29.Rc1 a4 30.Nc4 Rc8 31.f3 (31.Kg2 b3 32.Rbb1 Rb4-+) 31...Nc3 (better is 31...Nd6! 32.Nd6 Rc1 33.Kf2-+) 32.Nd6 Ne2!! 33.Kg2 (33.Re2 Rc1 Discovered attack (33...Rc1 Decoy)) 33...Nc1 (worse is 33...Rc1 34.Nb7 b3 35.Nc5 Nd4 36.Na4-+) 34.Nc8 (34.Nb7 Rc4 35.Rd2 b3-+) 34...Rc7 (better is 34...a3 35.Ne7 Kh7 36.Rb1-+) 35.Nd6 Rd7 36.Nb5 Nb3 37.g4 Nd4 38.Rd2? b3 39.Nd4 Rb7 40.Nf5?? a3 Black prepares the advance b2 41.Rd8 Kh7 42.Ra8 b2 43.Ra3 b1Q 44.Kg3 Qg1 45.Kf4 Qh2 46.Ke3-+ Rb2 47.Ra8 Qd2 48.Ke4-+ Rb4 49.Ke5 Qf4 50.Kd5 Rb5 51.Kc6 Qc4 52.Kd6 Rb6 53.Ke7 Rb7 54.Kf8 Qc5 55.Ne7 Qe7 0–1. maddoxdb – francoisg, gameknot.com, 2012. (=1.c3 e5 2.b4 Nc6)

4.a5 d5 5.Na3 a6 6.Qa4 b5 7.Qc2 g6 8.Nf3 Bg4 9.Nh4 Ne4 10.f3?? Qh4-+ 11.g3 Qd8 12.fe4=+ d4 13.cd4 Qd4?? 14.Qc6+- Bd7 15.Qa8 Ke7 16.Nc2 Bg7 17.Qa6 Qe4 18.d3 Qh1 19.Be3 Qh2?? 20.Bc5 Kd8 21.Rd1 Bh6?? 22.d4 Qg3 0–1. heinvictor – afcwarren (1750), net–chess.com, 2005.

4.Bb2 Bd7 5.Nf3 Nf6 6.d3 Be7 7.Be2 0-0 8.Nbd2 a5 9.a3 ab4 10.ab4 Ra1 11.Qa1 d5 12.0-0 d4 (better is 12...b5!?=) 13.cd4+/– (13.ed4?! ed4 14.Ne4 dc3 15.Bc3 Nb4=) 13...ed4 14.ed4?? (better is 14.b5 Nb4 15.Nd4+/–) 14...Nd4?? (better is 14...Nb4 15.Ne5 Nfd5–/+) 15.Nd4 Bb5?? (15...Bb4 16.Ne4 Ne4 17.de4 Qh4+-) 16.Nb5 Ng4 (16...c6 17.Nc3 Bb4+-) 17.Bg4 Bb4 18.Nf3 Bd2 (18...f5 19.Qa2 Kh8 20.Bh3+-) 19.Nd2 Re8 20.Nf3 c6 21.Nc3 Qd4 22.Nd4 Re1 23.Re1 (23.Re1 h5 24.Qa8 Kh7 25.Bf5 g6 26.Qf8 gf5 27.Qf7 Kh6 28.Bc1 f4 29.Bf4; 23.Qa8 Re8 24.Qe8) 1–0. Fournier,Frederic (1780) – MOUZOV (1700), Active blind, 2011.

4.Bb5 Nf6 5.Bc6 bc6 6.Ne2 Ba6 7.0-0 Be7 8.Re1 0-0 9.a4 d5 10.Qb3 Ng4 11.h3 Bc4 12.Qc2 Nh6 13.d3 Ba6 14.d4 (better is 14.e4!?+=) 14...e4+= 15.Qb2 f5 16.b5 Bb7 17.Nf4 Qd7 18.Qb3 Rab8 19.Ba3 cb5 (better is 19...Ba3!? 20.Na3 g5=) 20.Be7+/– ba4 21.Qa3 Rfe8 22.Bc5 Ba6 (22...g5 23.Ne2+- (23.Ba7?! Ra8 24.Nh5 Qf7 25.Qa4 Qh5+/–)) 23.Nd2 (23.Ba7?! Ra8 24.Bc5 g5+-) 23...Bb5 24.Qa2 c6 25.Nf1 Nf7 26.Ng3 Ng5 27.Ngh5 Ne6 28.Qa3 Nf4 (28...Nc5!? 29.Qc5 Qe7+/–) 29.Nf4+- g5 30.Nh5 Qf7 31.Bd6 (31.Ng3 f4 32.ef4 gf4+-) 31...Rbc8? (better is 31...Qh5 32.Bb8 Rb8+=) 32.Ng3+- f4 33.ef4 gf4 34.Nh1 f3 35.g3 Qh5 36.Kh2 Re6 37.Bf4 Rf8 38.g4 Qf7 39.Be3 Qc7 40.Ng3 Rf7 41.Qc5 Kg7 42.Kh1 Qe7 43.Qe7 Rfe7? (better is 43...Ree7!? 44.Nf5 Rf5 45.gf5 Kf6+/–) 44.Nf5+- (44.Nf5 Kf6 45.Ne7 Re7 46.Reb1+-) 1–0. maddoxdb – gingerbyron, gameknot.com, 2012. (=1.c3 Nc6 2.b4 e5)

4.Nf3 Be6 5.d3 f5 6.Be2 Nf6 7.Bb2 Be7 8.a3 Qd7 9.0-0 0-0 10.Nbd2 Kh8 11.e4 fe4 12.de4 a6 13.Qc2 Rf7 14.Rac1 h6 15.Rfd1 Raf8 16.Nf1 Nh7 17.Ne3 g5 (better is 17...Ng5!?=) 18.h3 Rg7 (18...Bf6+=) 19.Nd5 (19.c4!? Qc8 20.c5+/–) 19...Bd8 20.c4 Ne7? (20...g4 21.hg4 Bg4 22.Kf1+=) 21.Ne7 (21.Ne3!? Qe8 22.c5+-) 21...Qe7+/– 22.c5 h5 23.Qb3?? (better is 23.cd6 cd6 24.Ne5 de5 25.Be5+=) 23...Bb3-+ 24.cd6 cd6 25.Rc3 (25.Rf1 Nf6 26.Nd2 Be6-+) 25…Bd1 (25...Bd1 26.Bd1 Bb6-+) 0–1. Fournier,Frederic (1900) – draglim (2110), Active Blind, 2008.

4.Bb2 d6 5.d4 ed4 6.cd4 Qe7 (better is 6...Nb4!? 7.Nf3 Be7–/+) 7.a3 d5 8.Nf3 Bd7 9.Bd3 0-0-0 10.0-0 a5 (10...Re8 11.Qc2+=) 11.ba5 Na5 12.Bc3 Nc6 13.Nbd2 g5 (13...Re8 14.Qa4 Kb8 15.Qb3+/–) 14.h3 (14.Bb4 Qe8 15.Ng5 h6+-) 14...h5 (14...g4 15.hg4 Bg4+/–) 15.Qc2 (better is 15.Bb4 Nb4 16.ab4+-) 15...g4= 16.hg4 Bg7? (16...hg4 17.Ne5 Ne4+=) 17.gh5 (better is 17.g5!? Ne8 18.Rfb1+-) 17...Rh5+/– 18.Rfe1 Rhh8 19.Kf1 Qd6 20.Ke2 Bg4 21.Rh1 Bf3 22.Nf3 Rh1 23.Rh1 Re8 24.Bb4 Nb4 25.ab4 Ne4 26.Rb1 Qf6 27.Kf1 Kd7 28.Be4 de4 29.Nd2 Qg6+/– 30.Ne4?? f5?? 31.Ng3 Rh8 32.Rc1 Qd6 33.Qc7 Qc7+= 34.Rc7 Kc7 35.Nf5 Bf8 36.Ng3 Rh1?? 37.Nh1+- b5 38.Ke2 Kb6 39.Kd3 Kc6 40.Ng3 Kd5 41.Ne2 Bh6 42.Kc3 Ke4 43.g3 Be3 44.fe3 Kf3 45.Nf4 Ke4 46.Kd2 Kf3 47.Ne2 1–0. Fournier,Frederic (1970) – emmanuelmtz, Active, 2009.

4.Qb3 b5 5.Bb5+= a5 6.Bc6 dc6 7.b5 c5 (7...a4!? 8.Qc4 Ra5+=) 8.Nf3= Be6 9.Qa4 Bd7? (better is 9...e4 10.Ng5 Bf5+=) 10.Ne5+- h6 11.Ba3 Rb8 12.c4 Bd6 13.Nd3 Ra8? (better is 13...Ne4+-) 14.Bc5 0-0 15.Nc3 Bc5 (15...Bf5 16.Bd6 Qd6 17.Nf4+-) 16.Nc5 Re8 17.Nd7 Nd7 18.Nd5 Nc5 19.Qa3 Ne4 20.d3 Nd6 21.0-0 Qg5 (21...Nf5+-) 22.Nc7 Rad8 23.Ne8 Ne8 24.Rad1 Ra8 25.d4 White intends c5 25...Qd8 26.c5 Nf6 27.b6 Qb8 28.Rb1 Nd5 29.b7 Ra7 30.Qb3 Nb4 31.c6! Nc6 32.Rfc1 a4 33.Qb6 Qd6 34.Qc6 Qb8 35.Qc8 1–0. maddoxdb – belzafiro, gameknot.com, 2012. (=1.c3 e5 2.b4 Nc6 3.e3 Nf6)

4.Qb3 d5!? +=.

4.Nf3 d5 5.Bb2 e4 6.Nd4 Nd4 7.ed4 –/+.

4.Nf3 d5 5.Bb2 Be6 6.Be2 (6.b5!? Nb8 7.Ne5+=) 6...Bd6 7.d3 Qe7 8.Nbd2 0-0-0 (8...e4 9.de4 de4 10.Nd4 Nd4 11.ed4+=) 9.0-0 (9.b5 Nb8 10.Qa4 Bd7=) 9...h6 (9...e4 10.de4 de4 11.Nd4 Nd4 12.ed4+=) 10.e4 (10.b5!? Nb8 11.Qa4+=) 10...de4+= 11.Ne4 (11.de4!? g5 12.b5=) 11...Ne4–/+ 12.de4 f5 (12...Bb4!? 13.Qa4 Bd6–/+) 13.ef5 Bf5 14.Bd3?? (better is 14.b5 Nb8 15.Qa4=) 14...e4 (better is 14...Bd3 15.Qd3 e4 16.Qe3 ef3 17.Qf3-+) 15.Nd4? (15.b5 Bc5 16.Nd2 Rd3 17.bc6-+) 15...Nd4 (15...ed3?! 16.Nf5 Qe5 17.Nd6 Rd6 18.Qb3+=) 16.cd4 (16.Be4 Be4 17.cd4 Bb4-+) 16...ed3 17.Qd2 Bh7 18.f3 Be5 19.de5= Qe5?? 20.Be5+- Rhe8 21.Bg3 Re2 22.Qc3 d2 23.Rad1 Re1 24.Rfe1 de1Q 25.Re1 h5 26.Kh1 h4 27.Qc7 1–0. Fournier,Frederic (1915) – xamere (1895), Active Blind, 2008.

4.Nf3 d5 5.b5 e4=.

4.Nf3 d5 5.d3 Bf5 (5...Bd6 6.Be2+=) 6.Bb2 (6.b5 Nb8 7.Ne5 Bd6+=) 6...Bg6 (6...Bd6 7.b5 Ne7 8.Be2+=) 7.Be2 (better is 7.b5 Nb8 8.Ne5+/–) 7...Bb4?? (better is 7...e4 8.de4 de4=) 8.cb4+- 0-0 (8...e4 9.de4 de4 10.Nd4 Nd4 11.Bd4+-) 9.0-0 (9.b5 Ne7 10.Be5 Nd7+-) 9...Re8? (9...e4 10.Ne5 Nb4 11.Ng6 fg6 12.de4 Ne4 13.Qd4+-) 10.a3 (better is 10.b5!? Nb8 11.Ne5 Bf5+-) 10...e4 11.de4 de4 12.Qd8 Rad8 13.Nfd2 b6? 14.Rd1 Ne5 15.Be5 Re5 16.Nc3 Ree8 17.Nde4 Rd1 18.Rd1 Ne4 19.Ne4 Be4 20.f3 Ba8 21.Re1 a5 22.ba5+= ba5 23.e4 c5 24.a4 Bc6 25.Bb5 Bb5 26.ab5 a4 27.Ra1 a3 28.b6 c4?? 29.b7 Rb8 30.Ra3 Rb7 31.h3 c3?? 32.Ra1 Rc7?? 33.Rc1 c2 34.Kf2 h6 35.Ke2 Kh7 36.Kd2 g5 37.Rc2 Rc2 38.Kc2 f5?? 39.ef5 Kg7 40.g4 h5 41.Kd3 hg4 42.fg4 Kf6 43.Ke4 (43.Ke4 Kf7 44.Ke5 Kg7 45.Ke6 Kf8 46.f6 Kg8 47.f7 Kg7 48.Ke7 Kg6 49.f8Q Kh7 50.h4 gh4 51.Kf7 h3 52.Qg7) 1–0. Fournier,Frederic (1905) – davcece (1645), Active, 2011.

4.b5 Ne7 +=.

4.Qc2 d5 5.ed5 Nd5 6.Bc4 Nb6 7.Na3? Nc4 8.Nc4–/+ Be6 9.Ne3 Bd6 10.Nf3 0-0 11.d4? ed4-+ 12.Nd4 Bd7 13.b5?? Ne5 14.f4 Ng4 15.g3?? Re8-+ 16.Qd3 Qe7 17.0-0–/+ Ne3 18.Re1 Bf5?? 19.Nf5+- (19…Nf5 20.Re7 Ne7 21.Be3+-) 1–0. dtpoun – PineMartin, caissa.com, 2006.

4.Bc4 d5 5.ed5 Nd5 6.Bd5? (better is 6.Nf3!?+=) 6...Qd5–/+ 7.Qf3 Qf3 8.Nf3 Bd6 9.0-0 0-0 10.a4 h6 11.a5 a6 12.Na3 f6 13.Nc4 Be7 14.Nh4 Kh7 15.Ne3 g6 16.Nd5 Bd6 17.d3 Bg4 18.f3 Be6 19.Ne3 f5 20.Nc4? (20.g3 Rfd8–/+) 20...Be7 (20...g5 21.f4 gh4 22.fe5 Ne5 23.Nd6 cd6 24.d4-+) 21.Ng6? (better is 21.g3–/+) 21...Kg6-+ 22.f4 Bc4 23.dc4 e4 24.b5 (24.Rd1 Bf6 25.Bd2 Rad8-+) 24...ab5 25.cb5 Ra5 26.Ra5 Na5 27.Rd1 Rd8 28.Re1 (28.Rd8 Bd8 29.Be3 b6-+) 28...Rd3 29.Bb2 Nc4 30.Ba1 Bc5 Black intends e3 31.Kh1 (31.Kf1-+) 31...Bf2 32.Rf1 e3 33.h3 Nd2 34.Rc1-+ Nb3 35.Rb1 Na1 36.Ra1 e2 37.Kh2 e1Q 38.Re1-+ Be1 39.c4 Bg3 40.Kg1 Rd1 0–1. maddoxdb – jcortereal, gameknot.com, 2012. (=1.c3 e5 2.b4 Nc6 3.e4 Nf6)

4.d3 d5 5.b5 Ne7 6.ed5 Qd5 7.c4?? (Better is 7.Nf3=+) 7...Qd4-+ 8.Bb2 Qb2 9.Nd2 Ng6 10.a4 Bc5 11.Ngf3 Ng4 12.Rb1 (12.Qb1 Bf2 13.Kd1 Qb1 14.Rb1-+) 12...Bf2 13.Ke2 Nf4# 0–1. Hammi.Bogart – PassedPawn, ChessWorld.net, 2003.

4.d3 d5 5.Nd2 d4 6.cd4 Qd4-+ 7.Nb3 Bb4 8.Bd2 Bd2 9.Qd2 Ne4?? 10.Nd4 Nd2=+ 11.Kd2?? Nd4-+ 12.Ne2 0-0 13.Nd4 ed4 14.Be2 c5 15.Rhc1 b6 16.Ke1 g6 17.Kf1 Kg7 18.Bf3 Rb8 19.Re1 Bf5 20.g4? Bd3 21.Kg2 Rbe8 22.Re8 Re8 23.a4 Be4 24.Be4 Re4 25.f3 Re2 26.Kg3 d3 (27.g5 h6-+) 0–1. nandy conure – Kunk, ChessWorld.net, 2005.

4.d3 Ne7 5.Nf3 d6 6.Qa4 Bd7 7.b5 a6–/+ 8.c4 ab5 9.Qb3 c5 10.cb5=+ Qb6 11.a4= Ra5 12.Ng5 d5= 13.ed5 Ned5 14.Nc3 Nb4 15.Be2 Be6 16.Ne6= Qe6 17.Qe6 fe6 18.0-0 Nc2 19.Rb1 Nd5 20.Nd5=+ ed5 21.f4 Ra4 22.fe5 Nd4 23.Bf3 Rb4 24.Rb4 cb4 25.Bd5 b6 26.Bb2 Bc5+= 27.Bd4 Bd4=+ 28.Kh1 Rf8 29.Rf8 Kf8 30.e6 Ke7 31.Bc4 g5 32.g4+= Kd6 33.Kg2 h6 34.Kf3+/– Bf6 35.Ke4 Be5?? 36.Kf5 Bh2?? 37.Kf6+- h5 38.e7 Kd7 39.Kf7 b3 40.e8Q Kc7 41.Qc6 Kd8 42.Be6 hg4 43.Qd7# 1–0. Kevin@home – easydigital, ChessWorld.net, 2005.

4.Qe2 g6 5.Nf3 d6 6.d4 Bg7 7.d5 Ne7= 8.Qb5 Qd7 9.Qd7 Bd7 10.Bd3 Nh5 11.Na3 0-0-0 12.Ng5 Rdf8 13.Be3 h6 14.Nf3 f5 15.Nc4 Kb8 16.a4 fe4 17.Be4–/+ Nf5 18.Bd2? g5?? 19.g4+/– Nf4 20.gf5 Ng2? 21.Ke2+- Bf5 22.Bf5 Rf5+/– 23.Rhg1 Nf4 24.Bf4 ef4 25.Nd4 Bd4 26.cd4 Re8 27.Kd2 Rd5 28.Rge1 Rd4= 29.Kc3 Rde4 30.Re4 Re4 31.Nd2 Re2 32.f3 Rh2–/+ 33.Re1 Kc8 34.Ne4 Kd8 35.Nf6= c6 36.Re8 Kc7 37.Re7 Kb6 38.Nd7 Ka6?? 39.Nb8 (39…Kb6 40.a5 Kb5 41.Rb7 Ka4 42.Nc6+-) 1–0. sekhmet – Jeff_Foster, playchess.de, 2001.

4.f3 d5 5.Bb5 Bd7 6.Bc6 Bc6 7.d3 d4 8.Bg5 dc3 9.Bf6 Qf6 10.a3 a5 11.Nc3 ab4 12.Nd5? (better is 12.ab4 Ra1 13.Qa1 Bb4 14.Qa8 Qd8 15.Qd8 Kd8 16.Nge2-+) 12...Bd5 13.ed5 ba3 14.Qb3 Qh4 15.g3 (15.Ke2 Qb4 16.Qa2 Qd4-+) 15...Qb4 16.Qb4 Bb4 17.Ke2 (17.Kd1 Ke7-+) 17...a2 18.Nh3 Bc3 19.Rac1 (19.Ng5 b5 20.Ne4 Ba1 21.Ra1 b4-+) 19...a1Q 20.Ra1 Ra1 21.Ra1 Ba1 22.Ng5 h6 23.Ne4 Ke7 24.Nc5 b6 25.Ne4 Rd8 26.f4 Rd5 27.f5 f6 28.g4 c5 29.h3 b5 30.h4 (30.Nd2 Bd4-+) 30...b4 (30...c4 31.dc4 bc4 32.Nf2-+) 31.Nd2 Bc3 32.Nb3 Rd4! 33.Nd4 ed4 34.h5 b3 35.Kd1 b2 (35...c4 36.Ke2-+) 36.Kc2 c4! 37.dc4 d3! 38.Kb1 (38.Kd3 b1Q Combination) 38...d2 39.Kc2 b1Q! 40.Kb1 (40.Kb1 d1Q Mate attack) 40...d1Q 41.Ka2 Qc1 42.Kb3 Qb2 43.Ka4 Qb4 0–1. karlsdad – the horror man, ChessWorld.net, 2013.

4.f3 Ne4 5.Ne2 Nf6 6.d4 ed4 7.b5 –/+.

3.a3 (--> 1.b4 e5 2.a3 d5 3.c3).

3.Ba3 a5 4.Qa4 Nd7 5.e3 c6 6.d4 b5 7.Qb3 a4 8.Qc2 Bd6 9.Nf3 e4 10.Nfd2 Ndf6 11.Be2 Ne7 12.0-0 0-0 13.f3 Nf5-+ 14.g4?? Ng4!! 15.fg4 Bh2! 16.Kh2 Qh4 17.Kg1 Qg3 18.Kh1 Ne3 19.Rg1 Qh3# 0–1. Krahl,Wolfgang – Klaus,Gerd, D0012 DESC, 1999.

3.Ba3 a6 4.e3 (4.Nf3 Nc6–/+) 4...Bd7 (4...Nc6!?–/+) 5.d4+= e4 (5...ed4 6.cd4 (worse is 6.Qd4 Nf6–/+) 6...Nf6 7.Qb3+=) 6.Qb3 Nf6 7.Nd2 Be7 (7...Nc6 8.c4 Bf5 9.Nh3+=) 8.Ne2 (8.c4 Be6+=) 8...0-0 9.Nf4 c6 (9...Bb5 10.Nd5 Qd5 11.c4+=) 10.Be2+= Bd6 11.c4 Bf4 12.ef4 b5 13.c5 Bf5 (13...Bg4 14.Bg4 Ng4 15.0-0+=) 14.h3 h6 (14...a5 15.g4 Be6 16.f5=) 15.Nf1+= Nh5?? (better is 15...Qc7+=) 16.Bh5+- Qf6 17.Ng3 Bh7 (17...Bg6 18.Bg6 fg6 19.Ne2+-) 18.Qe3 Nd7 (18...a5 19.ba5 Ra5 20.Bg4+-) 19.0-0 Qe7 (19...a5 20.Rfb1+-) 20.Bb2 Nf6 21.Be2 Qe6 (21...a5 22.a4 ba4 23.Ra4 ab4 24.Rb4+-) 22.a4 Bf5 23.Ra2 Ne8 (23...Rac8 24.ab5 ab5 25.Ra6+-) 24.ab5 ab5 (24...cb5 25.Bb5! Nc7+-) 25.Ra8 1–0. Janek – fixiq, internet, 2017.

3.Ba3 Nc6 4.Nf3 e4 5.Ng1 a5 6.ba5 Ba3 7.Na3 Ra5 8.Qb3 Qe7 9.Nh3?? Qa3-+ 10.Qa3 Ra3 11.f3 Nf6 12.fe4 de4 13.d3 Rc3 14.Nf4 Rc2 15.e3 g5 16.de4 gf4 17.ef4 Ne4 18.Kd1 Nd4 19.Rc1 Bg4 20.Be2 Be2 21.Ke1 Rc1# 0–1. cind18 – Caissa, Live Game Caissa's Web, 2004.

3.Ba3 Bf5 4.Nf3 Bd6 5.e3 Nf6 6.Bb5 (6...Nbd7 7.0-0–/+). wonderhorse – gambitzoid (1675), net–chess.com, 2005.

3.Ba3 Nf6 4.d4 e4 5.e3–/+ a6 6.f4 b5 7.g3 Nbd7-+ 8.Bh3 Be7 9.g4 h6 10.Nd2 Nb6 11.Ne2 Bg4 12.Bg4 Ng4 13.Ng3 Ne3 14.Qc1 Ng2 15.Ke2 Nf4 16.Kf1 Bh4 (17.Nde4 Ne6-+; 16...Qd7 17.Kg1 g5 18.Qe1-+) 0–1. Vauban – pauloroberto, internet, 2006.

3.Na3 c5 4.bc5 Bc5 5.Nc2 (5.d4 ed4 6.cd4 Bb4 7.Bd2 Bd2 8.Qd2-/+) 5...b5 (better 5...Nf6!?-/+) 6.e3 a6 7.Nf3 e4 8.Ne5 (8.Nfd4 Nf6=) 8...Nd7 9.Nf7? (better 9.d4 Bd6 10.a4 ba4 11.Ra4 Ne5 12.de5 Be5 13.Nd4-/+) 9...Kf7-+ 10.Qh5 Ke6 11.d4? (better 11.Qg4 Kd6 12.Qg7-+) 11...Bd6 12.a4 (12.Qg4 Kf6 13.Qh4 g5-+) 12...Ngf6 13.Qh3 (13.Qh4 Qc7 14.Bd2-+) 13...Kf7 14.Qh4 Qc7 15.Bd2 ba4 16.Be2 Rb8 17.Rd1 (17.Nb4 Nb6 18.0-0 a5-+) 17...Nf8 (better 17...Nb6 18.g4 g5-+) 18.Ra1 (18.f4-+) 18...Ng6 19.Qf6 (19.Bh5 Bg4! 20.Qg4 Ng4 21.Bg4 Rb2-+) 19…Kf6 0-1. Shocker36 (1760) - DeeEm7 (2445), ChessWorld.net, 2013.

3.Na3 Bd7 4.d3 Nf6 5.Nf3 Bd6 6.Bb2 0-0 7.c4 e4 8.Nd4?? Re8 9.Bc3 Na6 10.Nab5 Be5 11.f3? ed3-+ 12.Qd3 Nh5 13.cd5? Nf4 14.Qe3?? Nd5-+ 15.g3 Ne3 16.f4 Nc2 17.Nc2 Bc3 18.Nc3 Bc6 19.a4 Bh1 20.b5 Nc5 21.a5 Nb3 22.Rb1 Nd2 23.Rd1 Nf3 24.Kf2 Qf6 25.ef3 Qc3 26.Rc1 Qd2 (27.Kg1 Qc1 28.b6 Re2 29.Ne1 Qe1 30.bc7 Rg2 31.Kh1 Qf1#; 26...Qc5 27.Nd4 Qd4#) 0–1. Gregor123 – Hobbykegler, mySchach.de, 2004.

3.Qa4 c6 4.b5 Bd7 5.d3 (5.e3 Nf6+=) 5...cb5–/+ 6.Qb3 Bc6 7.Nf3 Bd6 8.Bb2 a5 (8...Nf6 9.e3–/+) 9.c4 (9.Ba3 a4 10.Qb2 Bc7–/+) 9...Bb4 10.Bc3 Bc3 11.Nc3 bc4 12.dc4 d4 13.Nb5 f6 (13...a4 14.Qb4 Na6 15.Qa4–/+) 14.e3 Ne7 (14...Bf3!? 15.gf3 Na6–/+) 15.ed4= ed4 16.Nfd4 Qd7 (better is 16...a4!? 17.Qe3 Qa5 18.Qd2 Qd2 19.Kd2 Na6+=) 17.Rd1+/– Bb5?? (better is 17...0-0+/–) 18.Nb5+- (18.Qb5?! Nbc6 19.Be2 Nd4 20.Rd4 Qb5 21.cb5 Rd8 22.Rd8 Kd8+=; 18.cb5?! a4 19.Qc4 Nd5+-) 18...Qe6 19.Be2 Na6 (19...0-0 20.Nc7 Qe4 21.Na8+-) 20.Nd6 Kf8 21.Qb7 (21.Qb7 Re8 22.Qa6+-; 21.Nb7?! Ng6 22.Na5 Nc7+-) 1–0. pierred (2735) – blackfox (2530), net–chess.com, 2013. (=1.c3 e5 2.b4 d5 3.Qa4 c6 4.b5 Bd7)

3.Bb2 Bd6 4.e3 Nf6 5.f3 (5.c4 0-0–/+) 5...a6 6.g4? (6.c4 dc4 7.Bc4 Nc6–/+) 6...Nc6 (6...Ng4 7.h4 e4 8.f4-+) 7.a3 (7.d3 0-0–/+) 7...0-0 (7...Ng4!? 8.h4 e4 9.f4-+) 8.Qe2 Re8 9.Qg2 e4 10.g5 Nh5 (10...Nd7!?–/+) 11.Be2 Be7?? (better is 11...Ne5 12.fe4 de4 13.Qe4 Qg5=+) 12.fe4+/– g6 13.ed5+- Ne5 14.Bh5 gh5 15.Nf3?? Nd3-+ 16.Ke2 Nb2 17.g6? Bg4 18.gf7=+ Kf7 19.Rf1? Qd5-+ 20.h3 Qd3 21.Ke1 Bf3 22.Qf3 Ke6 23.Qf7 Kd7 24.Rf6 Qc4 25.Qh7?? Rh8 26.Qg7 Nd3 27.Kd1 Nf2 28.Rf2+/– Rhg8 29.Qh7 Rg1 30.Kc2+- Rf1?? 31.d3 Rf2-+ 32.Kd1 Qb3 33.Ke1 Qb2 34.d4 Qe2# 0–1. chk – colt, Live Game Caissa's Web, 2004.

3.Bb2 Be7 4.Nf3 e4 5.Nd4 Bf6 6.e3 Ne7 7.Ba3 0-0 8.b5 c6 9.Be7 Qe7 10.bc6 Bd4 (10...bc6 11.Nb3–/+) 11.cd4 (better is 11.cb7!? Bb7 12.cd4+=) 11...Nc6+= 12.Nc3 Be6 13.h3 a6 14.g4 f5 15.Qb3 Qd7 16.gf5 Bf5 (16...Rf5 17.d3+=) 17.Nd5 Na5? (better is 17...Be6!? 18.Nb6 Qf7 (18...Bb3 19.Nd7 Nb4 20.ab3 Nc2 21.Kd1 Na1 22.Bc4 Kh8 23.Nf8 Rf8 24.Ke2+-) 19.Qe6 Qe6=) 18.Nf6+/– Kh8 19.Nd7 Nb3 20.Nf8?? (better is 20.ab3 Bd7 21.d3+/–) 20...Na1–/+ 21.Bg2 (better is 21.Nh7!? Kh7 22.Bg2–/+) 21...Rf8-+ 22.Ke2 Nc2 23.h4 Nb4 24.a3 Nd3 (better is 24...Bg4 25.Kf1 Nd3-+) 25.Rf1 g6 26.f3 Nc5?? (better is 26...ef3 27.Bf3 Nb2-+) 27.dc5+- ef3 28.Bf3 Rf7 29.d4 Kg7 30.h5 gh5 31.Bh5?? Rf6?? 32.Bf3+- Bg6 33.e4 Rf4 34.d5?? Kf7?? 35.e5 Ra4 36.Bh5 Kg7? 37.Bg6 hg6 38.e6 Re4 39.Kd3 Re5 40.Rf7 Kg8 41.Rb7 Rd5 42.Kc4 Re5 43.e7 Kf7 44.c6 Re7 45.c7 Rc7 46.Rc7 Kg8 47.Rc6 Kf7 48.Ra6 g5 49.Rd6 g4 50.Rd1 Kf6 51.Rg1 Kf5 52.a4 Kf4 53.Kd3 Kf3 54.Kd2 g3 55.Rf1 Kg2 56.Ke1 Kh2 57.a5 g2 58.Kf2 gf1Q 59.Kf1 Kg3 60.a6 Kf4 61.a7 Ke5 62.a8Q Kd4 63.Ke2 Ke5 64.Ke3 Kf5 65.Qe4 Kf6 66.Kf4 Kf7 67.Kf5 Kg7 68.Qe6 Kf8 69.Qd7 1–0. kevtheman – jsmitch, gameknot.com, 2011. (=1.c3 e5 2.b4 d5 3.Bb2 Be7)

3.b5 Be6 4.Nf3 Bd6 5.a4 Ne7 6.h3 0-0 7.e3 c5 0–1. peteywheatstraw – doctorfeelgood (1700), gameknot.com, 2012.

3.b5 Nf6 4.d4 e4 5.e3 c6 6.c4 a6 7.ba6 ba6 8.c5 Be7 9.h4 h5 10.Na3 Bd7 11.Nc2 Be6 12.Nb4 Nfd7 13.Qa4 Qc7 14.Na6?? Na6-+ 15.Ba6 Nb8 16.Rb1 Ra6?? 17.Qb5?? Ra8 18.Qe2 Na6 19.Nh3 Bh3 20.Rh3 g6 21.g4 hg4 22.Qg4 Qa5 23.Bd2 Qa2 24.Rb7 Qa1 25.Ke2 Nc5! 26.Rc7 Qa6 27.Ke1 Nd3 28.Kf1 Ne5 29.Qe2 Qa1 30.Kg2 Rh4 -+. bjhaskins (1740) – gonso (2300), net–chess.com, 2003.

3.d3 a6 4.g3 b5 5.Bg2 Bb7 6.Bb2 f6 7.Nd2 c6 8.e4 Ne7 (9.Nb3 Nd7=; 8...a5 9.a3=+). vissky – Charlemagne, internet, 2007.

3.d3 Nc6 4.Nf3 Bd6 5.Bg5 (5.e4 Nf6=+ 6.Nbd2 0-0 (6...Be6 7.Be2 0-0 8.0-0 a6 9.Ng5 d4 10.Ne6 fe6; 6...h6 7.Be2 0-0 8.0-0 a6 9.ed5 Nd5 10.Ne4 Be6; 6...a6 7.Be2 0-0 8.0-0 Qe7 9.Qc2 Be6 10.ed5 Nd5) 7.Be2 Be6 8.0-0 h6 9.ed5 Nd5 10.Qc2 a6; 5.b5 Nce7 6.Bb2 (6.c4 Nf6 7.Nc3 dc4 8.dc4 e4 9.c5 Bc5 10.Qd8 Kd8 11.Ng5) 6...Nf6 (6...a6 7.c4 ab5 8.cb5 d4 9.Nbd2 Nf6 10.Nc4 0-0) 7.Nbd2 0-0 8.c4 e4 9.Bf6 ef3 10.Bc3 d4) 5...Nge7 (5...f6 6.Bc1=+ (6.Bd2 Nge7 7.b5 e4 8.bc6 ef3 9.cb7 Bb7 10.gf3 Qd7) 6...a6 7.Nbd2 Nge7 8.g3 0-0 9.Bg2 Be6 10.Bb2 Nf5; 5...Nf6 6.b5 Ne7 7.Nbd2 0-0 8.Qa4 Nd7 9.Nb3 Nb6 10.Qa5 a6) 6.Be7 (6.b5 Na5=+ (6...f6 7.Bd2 e4 8.bc6 ef3 9.cb7 Bb7 10.gf3 Qd7) 7.Qa4 b6 8.Nbd2 f6 9.Bh4 a6 10.ba6 Bd7) 6...Qe7 (6...Ne7 7.e3–/+ (7.Nbd2 0-0 8.g3 a5 9.a3 Qe8 10.Bg2 Qc6) 7...a5 8.ba5 Ra5 9.Nbd2 0-0 10.Be2 Bf5) 7.a3 (7.e4 Be6–/+ 8.b5 Na5 9.Qa4 b6 10.Be2 Nb7; 7.b5 Nd8 8.Nbd2 0-0 9.e4 c6 10.Be2 Ne6) 7...Bg4 (7...e4 8.de4 de4 9.Nd4–/+ e3 10.Nc6 bc6) 8.h3 (8.e4 Be6=+ 9.b5 Nb8 10.Be2 0-0; 8.b5 Nd8 9.Nbd2 0-0 10.h3 Be6) 8...Bh5 (8...Bf3 9.gf3 Rg8 (9...0-0 10.Nd2 Qe6) 10.Qa4–/+ (10.b5 Na5) 10...Qh4; 8...Bd7 9.Nbd2 0-0 10.e4 d4) 9.g4 (9.e4 de4 (9...0-0-0 10.Nbd2 f5) 10.de4 0-0-0=+; 9.Qb3 Qe6 10.Nbd2 0-0-0) 9...Bg6–/+ 10.b5 (10.Bg2 e4 11.de4 Be4–/+ (worse 11...Qe4 12.Nh4 Qe7 13.Ng6 hg6 14.Bd5+=)) 10...Na5 (10...Nd8 11.Nfd2–/+) 11.h4 (11.Qa4 b6=+) 11...h6 (11...e4 12.h5 ef3 13.hg6 fg6 14.Qa4–/+) 12.Nbd2 (12.Qa4 b6=+) 12...e4–/+ 13.de4 Be4 (13...de4 14.h5 Bh7 15.Qa4–/+) 14.Ne4 (14.e3 h5 15.Ne4 de4=+) 14...de4 15.Nd2? (better 15.Nd4 e3 16.Qa4 ef2 17.Kf2 Qf6 18.Ke1=+) 15...e3-+ (15...Ba3 16.Nb1 e3 17.Na3+=) 16.fe3?? (better 16.Nf3 Nc4 17.Qd3 ef2 18.Kf2-+) 16…Bg3 0–1. Korn,Lothar – Sochacki,Heiko (2025), remoteschach.de, 2010.

3.d3 Be6 4.Nf3 Bd6 5.e4 Nf6 6.ed5 (6.Ng5 0-0=) 6...Bd5=+ 7.Be2 e4 (7...0-0 8.0-0=+) 8.de4= Be4 9.0-0 0-0 10.Nbd2 c5 (10...Re8 11.Re1=) 11.Ne4+= Ne4 12.Qc2 Re8 13.Re1 Nd7 (13...cb4 14.Bb5 Nf6 15.Be8 Ne8 16.cb4+-) 14.Bb5 Nef6 15.Re8 Qe8 16.Bg5 a6 17.Re1 Qf8 18.Bd7 Nd7 19.Qf5 Nb6 20.Be3 Nc4 (20...Na4 21.Ng5 g6 22.Qh3+/-) 21.Bc5 b6 (21...Re8 22.Re8 Qe8 23.Qd5 Bc5 24.Qc4+/-) 22.Bd4 Re8 23.Re4 Re4 24.Qe4 a5 (24...b5+-) 25.Ng5 Threatening mate... how? 25...g6 26.Qd5 Na3 (26...Be7 27.Qc4 Bg5 28.Bb6+-) 27.Nf7! Qf7 Deflection from d6 28.Qd6 Qa2 (28...ab4 29.Qe5 (worse 29.Bb6 Nc2+-; 29.Qb4?! Qa2 30.h4 Qb1 31.Qb1 Nb1+/-; worse 29.cb4 Qa2 30.Qd8 Kf7 31.Qf6 Ke8 32.Qh8 Ke7 33.Qh7 Qf7 34.Qh4 Kd7+-) 29...Kf8 30.Bb6+- (30.cb4?! Nc4 31.Qb8 Qe8 32.Qf4 Qf7+-)) 29.h3 Qb1 30.Kh2 Qf5 31.ba5 ba5 32.Qa3 Kf7 33.Bb6 Qf4 34.g3 Qd2 (34...Qe5 35.Qa5 Qa5 36.Ba5+-) 35.Qb3 Kg7 (35...Ke7+-) 36.Bd4 Kf8 37.Bc5 Ke8 38.Qe6 Kd8 39.Bb6 1-0. Panza (2680) - kirklandlake (1680), ChessWorld.net, 2016.

3.d3 Bf5 4.e3 Nc6 5.a3 Bd6 6.g4 Be6 7.f3 e4 8.fe4 de4 9.d4 Nge7?? 10.c4 Nb4?? 11.ab4+= Bb4 12.Bd2 Bd2 13.Nd2 f5 14.gf5+- Bf5 15.Bg2 c6 16.Nb3 0-0 17.Nc5 Qc7? 18.Bh3?? Qd6 19.Nb7?? Qb4–/+ 20.Qd2 Qb7 21.Bf5 Rf5 22.Nh3 Raf8 23.Qe2?? Rf3 24.Ng5 Rf2! 25.Qd1?? Qb4 26.Qd2 Qd2# 0–1. arok – rla, internet, 2007.

3.d3 f6 4.Nf3= c5 5.bc5 Bc5 6.d4 ed4 7.cd4 Bb4 8.Bd2 Bd6 9.Nc3 Ne7 10.Qb3 Qb6 (10...Bc7!?+=) 11.Qb6+/– ab6 12.Nb5 Kd7 13.Nd6 Kd6 14.Bf4 Kd7 15.e3 Nec6 16.Bb5 Ke7 17.0-0 (17.Ke2 Bf5+/–) 17...Bg4 18.Nd2 Na6 19.Rfb1 Bf5 20.Rb2 Rhc8 21.Ba4 Ncb4 22.a3 Nc5? (better is 22...Nc2 23.Rf1 g5+/–) 23.dc5+- (23.ab4 Ra4 24.Rba2 Ra2 25.Ra2 Nd3–/+; < 23.Rb4 Na4 24.f3 Bd3=) 23...Nd3 24.Bd6 Ke6 25.Rb6 Ra4 26.Nb3 Kf7 27.Rb7 Kg6 28.h3 Rc4 29.a4 Rc2 30.f3 Rb2 31.a5 Nc5 32.Nc5 Rc2 33.a6 R2c5 34.Bc5 (34…Bd7 35.Rd7 Rc5 36.a7+-) 1–0. Sidenko,Anatoly – Oktavianus,Riza, corr UECC, 1999.

3.d4 c6 4.de5+= Bf5 5.Nf3 g6 (5...Nd7 6.Bf4+=) 6.Bg5 f6 7.ef6 Nf6 8.Nd4 c5 (better is 8...Bc8!?+/–) 9.Nf5+- gf5 10.bc5 Bc5 11.Bf6 Qf6 12.Qd5 Qc6?? (better is 12...Bb4 13.Qb3 Nc6+-) 13.Qe5 Kd7 14.Qh8 Qd6 (14...Qg6 15.g3+-) 15.Qh7 Ke6 (15...Kc6 16.Qf5 Nd7 17.e3+-) 16.Qb7 Qd5 (16...Qc6 17.Qc6 Nc6 18.e3+-) 17.Qd5 Kd5 18.g4! fg4 19.Bg2 Kd6 20.Ba8 (20…Nd7 21.Nd2+-) 1–0. guest2458 – fanda, ICC, 2003.

3.d4 f6 4.de5= fe5 5.e4 Nf6 6.ed5 Nd5 7.Bc4 Nc6?? 8.Bd5+- Bd6 9.Qf3 Rf8 10.Bc6 Ke7 11.Bg5 Ke6 12.Bd8 Rf3 13.gf3 bc6 14.Na3 Bb7 15.Bh4 a6 16.0-0-0 c5 17.bc5 Bc5 18.Ne2 Be7 19.Nc4 Bh4 20.f4 Bh1 21.Rh1 Bf2 22.fe5 g5?! 23.Ng3 Bg3 24.hg3 Rh8 25.Kc2 h5 26.a4 h4 27.gh4 gh4 28.Kb3 h3 29.Kb4 h2 30.Ka5 Rh4 31.Kb4 Rh3?? 32.Nd2+- Ke5 33.Ka5 Kf4 34.Nf1 c6? 35.Kb6 Kf3 36.Rh2 Rh2 37.Nh2 Ke3 38.Ka6 Kd3 39.Kb6 Kc3 40.a5 Kc4 41.a6 c5 42.a7 Kd4 43.a8Q c4 44.Qd8 Kc3 45.Kc5 Kb3 46.Qd4 c3 47.Qc4 Kb2 48.Kb4 c2 49.Qb3 (49…Ka1 50.Qc3 Kb1 51.Kb3 c1Q 52.Qd3 Ka1 53.Qa6 Qa3 54.Qa3 Kb1 55.Qb2; 49.Qc3 Kb1 50.Kb3 c1Q 51.Qd3 Ka1 52.Qa6 Qa3 53.Qa3 Kb1 54.Qb2) 1–0. METSAR – maz_manchester, ChessWorld.net, 2005.

3.d4 Nf6 4.de5 Ng4 (4...Ne4!?=) 5.Nf3+/– Nc6 6.Bf4 Bf5 (6...f6!? 7.ef6 Qf6+=) 7.h3 Bb1 (better is 7...Nh6!?+/–) 8.Rb1+- (8.hg4?! Be4+/–) 8...Nh6 9.e3 Nf5 10.Bd3 Nfe7 11.b5 Na5 12.e6 fe6 13.Nd4 Qd7 14.Qh5 Kd8 15.Qf7 (15.Bh7?! c5 16.bc6 Nec6+-) 15...Ng6 16.Bg6 hg6 17.Ne6 (17.Qe6?! Bc5+-) 17...Kc8 18.Qd7 Kd7 19.Nc7 g5 20.Bh2 Rc8 21.Nd5 Rc5 22.Rd1 Ke6 23.e4 Rc4 24.f3 Bc5 25.Nc7 Kf6 26.Rd5 Rc3 27.Be5 Kg6 28.Bc3 (28...Bb6 29.Rd7+-) 1–0. orane (1930) – tuvi (1725), Live Game Caissa's Web, 2003.

3.e3 b6 4.Nf3 a5 (4...Bd6 5.b5+=) 5.Bb2 (5.Ne5 Qf6 6.Qa4 c6+=) 5...ab4 (5...e4 6.Ne5 Bd6 7.c4+=) 6.cb4 (6.Ne5 Qd6 7.cb4 Qb4 8.Qc1+=) 6...c5 (6...e4 7.Nd4 Nf6+= (worse is 7...Bb4 8.Nc6 Nc6 9.Bg7+=)) 7.bc5 bc5 8.Bc3 (8.Be5 Nc6+/–) 8...Ba6 (better is 8...e4!? 9.Ne5 c4+=) 9.Ba6+/– Na6 10.0-0 (10.Ne5 Nf6+/–) 10...Nc7 (10...e4 11.Ne5 Nb4 12.d3=) 11.Qc2 (11.Ne5 Nf6+/–) 11...Bd6 (11...e4 12.Ne1=) 12.d3 (12.Be5 Nf6+/–) 12...Nf6 (12...Qf6 13.e4 Ne6 14.ed5+/–) 13.Nbd2 (13.Be5 Be5 14.Ne5 Qd6+/–) 13...0-0 (13...Qe7 14.Rfb1=) 14.Nb3 (14.Be5 Be5 15.Ne5 Qd6+/–) 14...Rb8 (14...Re8 15.Rfb1+=) 15.Rfd1 (15.Ne5 Ra8+/–) 15...c4 (better is 15...Re8=) 16.dc4+/– dc4 17.Ne5?? (better is 17.Na5 Ncd5 18.Nc6+/–) 17...Be5?? (17...cb3 18.ab3 Rb7=) 18.Rd8+- (18.Be5 cb3 19.Qc7 Qc7 20.Bc7 Rb7+/–) 18...Rbd8 (18...Rfd8 19.Be5 cb3 20.Qc7+-) 19.Be5 cb3 20.ab3 Nb5 21.Bf6 gf6 22.Qb2 Kh8 23.g3 Na3 24.Ra3 Ra8 25.Ra8 Ra8 26.Kg2 Rg8 27.b4 (27.b4 Kg7 28.b5+-) 1–0. Fournier,Frederic – fumadorr (1680), Active Blind, 2008.

3.e3 f6 4.c4 c6 5.b5 a6 6.Qa4 dc4 7.bc6? (better is 7.Bc4 cb5 8.Bb5 Bd7 9.Bd7 Nd7 10.d4+=) 7...b5-+ 8.Qc2 Nc6 9.a4 Bb4?? (better is 9...Nb4 10.Qb2 Bf5-+) 10.ab5+= Nce7? (10...Na5 11.ba6 Ra6 12.Bc4 Nc4 13.Ra6 Ba6 14.Qa4 Kf7 15.Qa6= (15.Qb4 Nb2 16.Qb2 Qd3-+)) 11.Bc4 (11.ba6!? Qd6 12.Bc4+-) 11...Bb7+/– 12.f3 (12.ba6 Bg2 13.Qa4 Nc6-+) 12...Kf8? (better is 12...a5+/–) 13.ba6+- Bc6 14.e4 Nc8?? (14...Ke8+-) 15.Bb3 Bb5+/– 16.Bc4 Bc6 17.Bg8 Rg8 18.Qc6 Ne7 19.Qb7 Bd6 20.Ba3 Ba3 21.Ra3 Qc8?? 22.Ne2 Qb7 23.ab7 Rb8 24.Ra8 Kf7 25.Rb8 Rb8 26.0-0 Rb7 27.Nbc3 g5 28.g4 Rb2 29.Rd1 Ng6 30.Kf2 Nh4 31.d4 h6 32.d5 Ke7 33.Ra1 Kf7 34.Ra7 Kg6 35.d6 Rb8 36.Nd5 Rd8 37.Ne7 Kf7 38.Nc6 Ke8 39.Re7 Kf8 40.Nd8 Ng6 41.Rh7 Ke8 42.Rh6 Nf8 43.Rf6 Nd7 44.Rf5 Kd8 45.Rg5 Nb8 46.Re5 Nd7 47.Ra5 Nb6 48.e5 Nc4 49.Ra8 Kd7 50.g5 Ne5 51.h4 Kd6 52.h5 Ke6 53.Re8 Kf5 54.Nd4 Kg5 55.Re5 Kf4 56.Rf5 1–0. maddoxdb – ardvark2345, gameknot.com, 2013. (=1.c3 d5 2.b4 e5 3.e3 f6)

3.e3 h5 4.a4 a6 5.a5 Bd7 6.Qb3 Be6 7.Qa4 c6 8.Nf3 f6 9.Nh4 Ne7 10.Na3 e4 11.d3? (better is 11.g3!?–/+) 11...g5-+ 12.g3 (better is 12.de4 de4 13.Qc2-+) 12...gh4 13.Nc2 h3 14.d4 (14.Nd4 Qd7-+) 14...Ng6 Black intends h4 15.Na3 Bd7 16.Qb3 b6 17.ab6 Qb6 18.Bd2 h4 19.Nc2 a5 20.Qa2 a4 21.Na3 Na6 22.Qc2 Ne7 23.Qb2 c5! 24.dc5 (24.bc5 Qb2 Pinning (24...Qb2 Deflection); 24.dc5 Nc5) 24...Nc5! 25.b5 (25.bc5 Qb2 Pinning (25...Qb2 Deflection)) 25...Ng6 26.Be2 Ne5 27.0-0 Bg7 28.c4 f5 29.Bc3 Qf6 (29...Ncd3 30.Qd2 hg3 31.fg3-+) 30.Qd2 (30.cd5 hg3 31.fg3 Nf3 32.Bf3 Qc3 33.Qc3 Bc3-+) 30...Ncd3 (better is 30...hg3 31.Qd5 gh2 32.Kh2-+) 31.Bd3 (31.Be5 Qe5 32.Bd3 ed3 33.Qd3-+) 31...Nf3 32.Kh1 Nd2 33.Bd2 ed3 34.Rab1 dc4 35.Nc4 Bb5! 36.Na3 Bc6 37.Kg1 Bf3 38.Nb5 Qc6 39.Rfc1 Qg6 40.Nc7 Kf7 41.Na8 Ba8 42.Rc7 Kg8 43.Rb8 Kh7 44.Rh8 Kh8 45.Rc8 Kh7 46.Ra8 Qc6 47.Ra7 Qg2 0–1. maddoxdb – chckm8r, gameknot.com, 2011. (=1.c3 e5 2.b4 d5 3.e3 h5)

3.e4 Nf6 4.ed5+= Nd5 5.h4 f6 6.Bb5 c6 7.Bc6?? (better is 7.Bf1–/+) 7...Nc6-+ 8.d3 (8.b5 Nce7-+) 8...Bd6 (better is 8...Ndb4!? 9.d4-+) 9.h5 0-0 10.Nh3 Bh3 (10...Be6 11.h6 g5 12.b5-+) 11.gh3 (11.Rh3 Rc8-+) 11...f5 12.a4 a5 13.f3 (13.Qb3 Nce7 14.h6-+) 13...Qh4 14.Ke2 Qh5 15.Ke1 (15.b5 e4 16.Kf2 Nce7-+) 15...ab4 16.cb4 (16.c4 Nc3 17.Nc3 bc3-+) 16...Bb4 17.Qd2 (17.Kf1-+) 17...Bd2 18.Bd2 Qf3 19.Rf1 Qd3 20.Nc3 Nc3 21.Rd1 Qe2 0–1. NUPE – Trebli, playchess.de, 2001. (=1.e4 d5 2.b4 e5 3.c3 Nf6)

3.f3 Nf6 4.g4? (4.d3 Bd6–/+) 4...a5?? (better is 4...Ng4 5.e4 Qh4 6.Ke2 Qf2 7.Kd3 Nh2-+) 5.Qa4–/+ Bd7 6.b5 Na6 7.Qb3 (7.ba6 Ba4 Pinning (7...Ba4 Deflection)) 7...Nc5 8.Qd1?? (better is 8.Qb2!?–/+) 8...Bb5 (8...Ng4 9.d4 Qh4 10.Kd2-+) 9.a4?? (9.e3 Bf1 10.Kf1 Nd3-+) 9...Ba6 10.Bb2?? b5 11.ab5?? Bb5 12.d4 a4?? 13.Na3?? c6 (13...c6 14.Nb5 Ng4 15.dc5 Qh4 16.Kd2 Qg5 17.e3 Ne3 18.Nc7 Kd7 19.Na8 Nd1 20.Kd1 Bc5 21.Ra4 Bg1 22.Bh3 f5-+) 0–1. georginoh (1715) – ringo (1790), net–chess.com, 2013.

3.Nf3 f6 4.g3 e4 5.Nd4 c5 6.bc5= Bc5 7.Bg2 Bd4 8.cd4 Nc6 9.Bb2 f5 10.e3 Nf6 11.0-0 0-0 12.Na3 Nb4=+ 13.Nc2 Nd3 14.Ba3 Rf7 15.Nb4 Nb4 16.Bb4 a5 17.Ba3 b5 18.d3 b4–/+ 19.Bb2 Ba6 20.a3 Bd3-+ 21.Re1 Ng4 22.ab4–/+ ab4 23.Ra8 Qa8 24.Qd2 b3 25.f3 Nh6 26.f4 Ng4 27.h3 Nh6 28.Ra1 Ra7 29.Qc1 Bc2 30.Ra7–/+ Qa7 31.Qd2 Qa2 32.Qc3 Qb1 33.Kh2= Kf7?? 34.Qc7+- Kg6 35.Qd6 Kh5 36.g4 fg4 37.Qe5 Kh4?? 38.Qg5 1–0. pinecrest1981 – herb2004, Caissa.com, 2004.

3.Nf3 Nf6 4.d4 e4=+ 5.Ne5 Bd6 6.Bg5 0-0 7.e3 Re8 8.f4 Nbd7 9.Ng4 h6 10.Nh6 Kh7?? 11.Nf7+- Qe7 12.Nd6 Qd6 13.g3 g6 14.Bh3 Nh5 15.g4 Ng7 16.0-0 Ne6 17.Bh4 Rf8 18.Bg3 Qe7 19.f5 Ng5 20.fg6 Kg6 21.Bg2 Nf6 22.h4 Ne6 23.g5 Nh5 24.Be5 Nhg7 25.Nd2 Nf5 26.Ne4 Ne3?? 27.h5 Kh7 28.Nf6 Kh8 29.Nd5 (29…Ng7 30.Ne7 Rf1 31.Qf1 Nf1 32.Rf1+-) 1–0. Tricky.1 – boldeagle, ChessWorld.net, 2005.

3.g3 c5 4.Bg2 cb4 5.cb4 Bb4 6.Nc3 (6.Qb3!? Nc6 7.Bd5=+) 6...Nf6 7.Bb2 (7.Qb3 Bc3 8.dc3 Qc7-/+) 7...Nc6-+ 8.Nf3 (8.Rc1 0-0-+) 8...d4 9.Nb5 a6 10.Na3 (better 10.Qa4 Nd7 11.Nh4-+) 10...Qa5 (10...e4 11.Ng1-+) 11.Nc2 (11.Nc4!? Qc7 12.Qc2-/+) 11...Bd6 12.0-0 0-0 13.d3 Bg4 14.a4 Qd8 (14...Rfd8 15.e3 de3 16.Ne3-/+) 15.Ba3 (15.e3 Bc5-/+) 15...Bc5?? (better 15...Nd5-+) 16.Bc5+- (16.Bc5 Re8 17.Rb1+-) 1-0. ribarisah (2110) - Vinvin (1960), Rated Bullet game, lichess.org, 2013.

3.g3 Nc6 4.Bg2 Nf6 5.a4 a5 6.b5 Na7 7.Nf3 Bd6 8.0-0 0-0 9.d3 c6 10.c4 Be6 11.Qc2 d4 (11...cb5!? 12.ab5 dc4 13.dc4 Qc7+=) 12.c5= Bb8 13.b6 Nc8 14.Na3 Qe7 15.Bd2 (15.e3 de3 16.Be3 Bd5=) 15...Nd5 (15...Nd7 16.Ng5+=) 16.Ng5 Nc3 (16...Nb4 17.Bb4 ab4 18.Ne6 fe6 19.Nb1=) 17.Bc3 dc3? (better is 17...Qg5 18.Bd2 Qe7=) 18.Ne6+- Qe6 19.Qc3 f5 (19...Qe7 20.Rad1+-) 20.Qc4 (20.Nc4 e4+-) 20...Qc4 21.Nc4 f4 (21...Ne7 22.Rfd1+-) 22.Bc6! bc6 23.b7 Ra7 24.bc8Q Rc8 25.Nb6 (25.Rab1 Bc7+-) 25...Re8 26.Rfd1 g5 27.d4 (27.Rab1!?+/–) 27...ed4+= 28.Rab1 (28.Rd4 Rae7 29.Ra2 Bc7+/–) 28...fg3 29.hg3 Re2 30.Rd4 Rf7 31.f4 (31.Rd8 Kg7=) 31...Be5 (31...Bc7 32.fg5 Re5 33.Rg4–/+) 32.fe5= Rff2 33.Re4 Rg2 34.Kf1 Rgf2 35.Kg1 Rg2 36.Kh1 Rh2 37.Kg1 ½–½. Ryszkowski,Radoslaw – Dombrowski,Marek, Indywidualne Mistrzostwa Tczewa Poland, 2007.

3.g3 d4 4.Bb2 Nf6 5.a3 Bf5 6.Bg2 Bd6?? (better is 6...Nc6=) 7.Bb7+/– (7.cd4?! e4+=) 7...Nbd7 8.Ba8 Be4?? (better is 8...Qa8 9.f3 c5+/–) 9.Be4+- Ne4 10.d3 Ng5 11.h4 Ne6 12.cd4 Nd4 13.Bd4 ed4 14.Qa4 0-0 15.Nf3 Nb6 16.Qa7 Qd7 17.Nd4 (better is 17.Qb7!? Ra8+-) 17...Ra8 (17...Be5 18.Qb7 Bd4 19.Ra2+-) 18.Qb7 Re8 (18...Bb4 19.ab4 Ra1 20.Qb8 Nc8 21.0-0+-) 19.Nd2 (better is 19.Nc6 Qe6 20.e4 Qf6+-) 19...Be5 20.N2f3 Bd4 21.Rc1 Qe6 22.Nd4 Qg4 23.0-0 Qd4 24.Rc7 Nd5 25.Rc8 Kf8 26.Re8 Ke8 27.Rc1 Ne7 28.Qb8 Kd7 29.Rc7 Ke6 30.Qb7 Nd5 31.Qc6 Ke5 32.Rd7 Qa1 33.Kh2 Qa2 34.Qd6 Kd4 35.Qc5 Ke5 36.f4 Kf5 37.Rd5 Kg6 38.Rd6 f6 39.h5 Kf7 40.Qc7 1–0. maddoxdb – spglenn, gameknot.com, 2011. (=1.c3 d5 2.b4 e5 3.g3 d4)

3.g3 Qf6 4.Bg2 e4 5.e3 Bd7 6.Ne2 Bb4! 7.Bb2 Bf8 8.0-0 Qh6 9.d3 Nf6 10.Nf4 c6 11.de4 Ne4 12.Nd2 Nd2–/+ 13.Qd2 Bd6 14.Nd3 0-0–/+ 15.Rac1 Be6 16.c4 dc4 17.Ne1 Be7 18.Nc2 Na6 19.Nd4 Bd5 20.Bd5 cd5 21.Nf5= Qe6 22.Ng7 Qg6 23.Qd4 Nc7?? 24.Nf5! Qf6?? 25.Qf6 Bf6+- 26.Bf6 h5 27.Rfd1 Kh7 28.Ne7 Rad8 29.Bh4 Rd7 30.Nf5 b5 31.Nd4 Kg6 32.Nf3 f6 33.Nd4 a6 34.Kg2 1–0. kostaspetidis (2105) – rodnel, net–chess.com, 2006.

3.g4 Bg4 4.f3?? (better is 4.h3 Bf5 5.Nf3-+) 4...Qh4 0–1. icecold – Caissa, Live Game Caissa's Web, 2004.

3.h3 a5 4.Qa4 Nc6 5.b5 Nce7 6.Nf3 e4 7.Ne5 Nf6 8.Qd1 (8.Ba3 Ng6 9.Bf8 Nf8=+) 8...Nd7 9.d4 Ne5 10.de5 Bd7 (10...Qd7 11.e3=) 11.a4 (11.e3 c6=+) 11...Nf5 12.g4 Nh6?? (better is 12...Ne7=+) 13.Qd5+/– (13...Be6 14.Qd8 Rd8 15.Bg2+–) 1–0. Marre – KUSTAN, zagraj.pl, 2003.

3.h3 Bd7 4.Nf3 Bd6 5.d4 e4 6.Ne5 Nc6 7.Nd7= Qd7 8.a4 Nce7 9.Na3 a6 10.Rb1 Nf6 11.c4 Qf5?? 12.g4+- Qg6 13.c5 e3 14.cd6 ef2 15.Kf2 Ne4 16.Kg2 cd6? 17.Rb3 Nf5 18.Kh2+- Nh4 19.Qe1 Qf6 20.g5 Qd4? 21.Qh4 Qe5 22.Bf4 Qe6 23.Bg2 0-0 24.Nc2 d4 25.Nd4 Qe8 26.Re3 d5 27.Bd6! Nd6 28.Re8 Rfe8 29.Bd5 Rad8 30.e4 Rc8 31.Qf4 Re7 32.Qd6 (32...Rec7 33.Qb6+-) 1–0. pierre – hris, ChessHere.com, 2006.

3.h3 f5 4.d4 e4 5.Bf4 Nf6 6.e3 Bd6 7.Ne2 0-0 8.Nd2 c6 9.a3 Nh5 10.Bd6 Qd6 11.c4 f4 12.Qb3 fe3 13.Qe3 Nf4 (13...Nf6 14.Nf4=) 14.Nf4 Qf4 15.Qf4 Rf4 16.Rb1 Nd7 17.a4 Nb6 18.a5 Nc4 19.Nc4 dc4 20.Bc4 Kf8 21.Ke2 Rf6 22.Ke3 Bf5 23.b5 cb5 24.Rb5 (24.Bb5 b6+/–) 24...b6 25.Ra1 Bd7 (25...Rc8!? 26.Rb4 Rc7+/–) 26.Rd5+– Bc6? (better is 26...Rd8+–) 27.ab6 Bd5 (27...a6 28.Rc5 Bb7+–) 28.Bd5 Rb6 29.Ba8 a6 30.Be4 Ke7 (30...g6 31.Bd5+–) 31.Bh7 g5 (31...Re6 32.Be4+–) 32.Ra5 Kf6 33.Bd3 Re6 34.Kd2 Re7 35.Ra6 Kf7 36.Bf5 Rb7 37.Rg6 Rb5 (37...Rb2 38.Ke3+–) 38.Rg5 Kf6 (38...Rb4 39.Ke3 Rb8 40.h4 Rb3 41.Bd3+–) 39.h4 (better is 39.f4+–) 39...Rf5 (39...Rb2 40.Ke3 Rb3 41.Bd3 Kf7+–) 40.Rf5 Kf5 41.g3 (better is 41.Ke3!? Kg4 42.g3 Kf5+–) 41...Ke4 42.h5 Kf5 43.h6 Kg6 44.g4 Kh6 45.d5 (better is 45.f4 Kg6+–) 45...Kg5 46.f4! Kf4 47.d6 Kg4 48.d7 Kf5 49.d8Q Ke5 50.Qd7 Kf4 51.Qd5 Kg4 52.Qe5 (52.Ke3 Kh3 53.Kf3 Kh4 54.Qe5 Kh3 55.Qg3) 52...Kf3 (52...Kh4 53.Ke3 Kg4 54.Qe6 Kh4 55.Qh6 Kg3 56.Qg7 Kh3 57.Kf3 Kh4 58.Qg4) 1–0. kamret (2170) – avet (1915), GameColony.com online, 2004.

3.h3 Nf6–/+ 4.d4 ed4 5.Qd4 Nc6 6.Qe3 Be6 7.Nf3 Bd6 8.b5 Ne7 9.Nd4 Bc8 10.Nd2 0-0–/+ 11.g3 a6 12.ba6 Ra6 13.Bg2 c5 14.Nb5=+ Nf5 15.Qd3 c4 16.Qb1 Bc5 17.e3 Re8 18.0-0 Qa5 19.a4 Nd6 20.Nd6 Bd6 21.Bb2 Bd7 22.Nf3 Ne4 23.Ba3 Rb6 24.Qc2 Nc3 25.Qd2 Ba3 26.Ra3=+ Rb3 27.Rb3 cb3 28.Rc1 Rc8–/+ 29.Kh2 Qc5 30.Nd4 Ne4 31.Nb3 Qc1! 32.Qc1 Rc1 33.Nc1 Ba4 34.Ne2 Kf8 35.f3 Nc5 36.Nc3 Bc6 37.Kg1 Na4 38.Na4 Ba4 39.Kf2 Ke7 40.Ke1 b5 41.Kd2 Kd6 42.Kc3 Kc5-+ 43.Kb2 d4 44.ed4 Kd4 45.f4 b4 46.f5 f6-+ 47.g4 Ke3 48.Bd5 0–1. pierre – khamin, ChessHere.com, 2006.

4.Qa4!? Bd7 5.b5 –/+.

4.Nb1 ab4 5.cb4 Bb4 6.a3 Nc6 7.Ra2 Nf6 8.Rb2 Bc5 (8...Ba3?! 9.Ra2 Bc1 10.Ra8=) 9.e3 Ra5 10.Rc2 (10.Bb5 0-0-+) 10...0-0 11.d4 ed4 12.ed4 (12.Bd2 Bb6 13.Ba5 Ba5 14.Nd2 de3 15.fe3-+) 12...Nd4 13.Rd2 Bf5 (13...Re8 14.Be2 Ne2 15.Re2-+) 14.Bd3 (14.Rd4 Qe8 15.Be2 Bb1-+) 14...Re8 15.Be4 (15.Kf1-+) 15...Ne4 16.Rd4 Nc3 17.Be3 Nd1 18.Kd1 Bd4 19.Bd4 Bb1 20.h4 Qd7 21.Ne2 Qa4 22.Kc1 Qc2 0–1. jackedupfarmer – Caissa, Live Game Caissa's Web, 2004.

4.Nb5? c6-+ 5.Na3 ab4 6.Nc2 bc3 7.dc3 Bc5 8.Nf3 e4 9.Ne5? (better is 9.Nfd4-+) 9...f6 (10.Nd3 ed3 11.ed3 Ne7-+) 0–1. shrink – Caissa, Live Game Caissa's Web, 2004.

4.Rb1 a5 5.Qa4 Bd7 6.b5 Bd6 7.Nf3 e4 8.Nd4 0-0 9.Qc2 c6 10.bc6 bc6 11.Nf5?? Bf5-+ 12.d3 ed3 13.ed3 Qe7 14.Be2 Ba3 15.Ba3 Qa3 16.0-0 Nbd7 17.Rb3 Qd6 18.g3 Rfe8 19.a4 Nc5 20.Rb6 Re2! 21.Qe2 Bd3 22.Qe3 Bf1 23.Kf1 Na4 24.Rb7 Ne4 25.f3 Nec3 26.Re7 c5 27.Re8 Re8 28.Qe8 Qf8 29.Qe5 d4 30.Ke1 Nb2 31.Kd2 Nc4 (32.Kd3 Ne5 33.Kd2 Nf3 34.Kc2 Qb8 35.Kd3 Qb5 36.Kc2 Qb1#) 0–1. Krahl,Wolfgang – Chua,Armstrong, IECC, 1999.

4.Qb3 c6 5.e3 Bd6 6.b5 e4 7.bc6 bc6 8.Qa4 Ng4 9.g3? Qf6-+ 10.f4?? ef3 11.Nh3 f2 12.Ke2 Ba6 13.d3 Qc3 14.Qg4 Qe1 15.Kf3 Qd1 16.Be2 Qh1 17.Kf2 Qh2 18.Kf3 Nd7 19.Rb1 Ne5 (20.Kf4 Ng4 21.Kg4 Qg3 22.Kh5 Qh3 23.Kg5 h6#) 0–1. Krahl,Wolfgang – Krasny,Henryk Jan, corr TKM, 1997.

4.d3 c5 5.bc5 Bc5 6.Nf3 Nc6 7.Qa4 (7.Nc2 0-0–/+) 7...0-0 8.e3 Bd7 9.Be2 (9.Qb3 e4 10.Nd2 b6–/+) 9...d4! 10.Bb2? (10.cd4 Qa5 Double attack (10...Qa5 Decoy); 10.ed4 Nd4 Decoy) 10...de3 (10...dc3 11.Bc3 Nd4 12.Qa5 Qa5 13.Ba5 Nf3 14.Bf3 Ba3 15.Rb1-+) 11.fe3 Be3 12.Bc1 Bb6 (better is 12...Ng4-+) 13.c4? (better is 13.Qh4-+) 13...Re8 (13...Nd4 14.Qd1 Ng4 15.Nd4 Bd4 16.Bg4 Bg4 17.Qg4 Ba1 18.Ke2-+) 14.Bb2 (14.Qb3 e4 15.de4 Ne4-+ (15...Re4?! 16.Kf1-+)) 14...Ba5 (14...Nd4 15.Qd1 Nf3 16.Bf3-+) 15.Nd2 (15.Kf1 Ng4 16.Qb3 Ne3 17.Kg1-+) 15...e4 16.de4 (16.Bf6 gf6 17.0-0 Bd2 18.de4-+) 16...Ne4 17.Bc1 (17.0-0 Nd2 18.Bh5 Nf1 19.Rf1 Qb6 20.Kh1-+) 17...Nd4 18.Rb1 Ba4 (18...Qf6 19.g3 Qf2 20.Kd1 Qe2) 19.0-0 Ne2 20.Kh1 Bd2 (20...N2g3 21.hg3 Ng3 22.Kg1 Ne2 23.Kf2 Qh4 24.Kf3 Nd4) 21.Re1 (21.Rb3 Qh4 22.g3 Bc6 23.Rbf3 N4g3 24.Kg2 Nf4 25.Kg1 Nh3 26.Kg2 Re2 27.R1f2 Rf2) 21…Nf2# 0–1. Woeller,Karle (1830) – Palmi,Herbert (2235), remoteschach.de, 2003.

4.d3 d4 5.Qa4 Qd7 6.b5 –/+.

4.e3 e4 5.Qb3 Nc6 6.b5 Na5 7.Qa4 b6 8.Nc2 Ng4 9.Be2 Nf2?? (better is 9...Ne5+=) 10.Kf2+/– Qh4 11.g3 Qf6 12.Kg2 h5 13.Nh3?? (better is 13.Qd4+-) 13...Qe6?? (better is 13...Bh3!? 14.Kh3 Qf2+=) 14.Ng5?? (14.Nf4!? Qf5 15.Ba3 Ba3 16.Na3 Bb7+-) 14...Qf5? (better is 14...Qe5 15.Nf7 Kf7 16.Rf1 Ke8=) 15.h4+- Bd6 16.Rf1?? Qg6?? 17.Qd4 0-0 18.Qd5 Bb7 19.Qd4?? c6?? 20.Ba3 Ba3 21.Na3 c5? 22.Qa4 Rfe8 23.Nc4 Nc4 24.Qc4 Red8 25.Rad1 a6 26.Rf4 ab5?! 27.Qb5 Ba6 28.Qb3 Be2-+ 29.Rb1 Bf3 30.Nf3 ef3 31.Kf3 Rd2 32.Rd1? Qc6-+ 33.e4 c4 34.Qb1 Rda2 35.Rc1? Ra1 36.Qc2?? R1a2 37.Qd1?? Rh2 38.Rc2 Qa4 39.Qd5= Rc2 40.Qf7 Kh8 41.Qh5 Kg8 42.Qf7 Kh8 43.Qh5 Kg8 44.Qf7 Kh8 45.Kg4?? Rg2 46.e5?? Qd1 47.Rf3 Rf2?? 48.Qh5= Kg8 49.Qf7 Kh8 50.Qh5 Kg8 51.Qf7 Kh8 52.Qh5 Kg8 53.Qf7 ½–½. maddoxdb – ragamundus3, gameknot.com, 2014. (=1.c3 d5 2.b4 e5 3.Na3 Nf6)

3.a4 (--> 1.b4 d5 2.a4 e5 3.c3).

3.a4 Nf6 (--> 1.b4 Nf6 2.a4 e5 3.c3 d5).

4.b5 a6 5.g3 Qb5-+ 6.Qb5 ab5 7.Bg2 Nf6 8.Na3?? Ba3 (9.Ba3 Ra3-+; < 8...Ra3 9.Ba3 Ba3 10.Rb1-+) 0–1. rweasley – Caissa, Live Game Caissa's Web, 2005.

4.Qd7 Nd7 5.Ba3 a5 6.b5 Ba3 7.Na3 Ngf6 8.c4 e4 9.f3 c6 10.bc6 bc6 11.h3 Rb8 12.d3 ed3 13.ed3 Rb2 14.g4 0-0 15.Be2 Re8 16.h4 Ne5 17.Kd1 dc4 18.Nc4 Nc4 19.dc4 Re3 20.a4 c5 21.h5 Bb7 22.g5 Ng4 23.Rh4 Bf3!! 24.Bf3 Nf2 25.Kc1 Nd3 26.Kd1 Re1 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

4.Qd7 Nd7 5.Ba3 a5 6.e3 ab4 7.Bb4 c5 8.Ba3 Bd6 9.d4 Ra5 10.g3 Ngf6 11.f3 0-0 12.Bh3 b6 13.Ne2 Re8 14.Nc1? ed4-+ 15.cd4?! Re3 16.Kf2 Raa3 17.Na3 Ra3 18.Rb1 cd4 19.Rb3 Ra4 20.Bf5 Ba6 21.Bd3 Nc5 22.Rb6 Bc7 23.Rc6 Nd3 24.Nd3 Ra2 25.Kg1 Bd3 26.h4 Ra7 27.g4 Ra1 28.Kg2 Ra2 29.Kh3 Bf1! 30.Rf1 Rh2 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

4.Qd7 Nd7 5.d4 ed4 6.cd4 Bb4 (7.Bd2 Be7–/+) 0–1. SCRATCHY – Caissa, Live Game Caissa's Web, 2004.

4.Qb3 d4 5.e4 dc3 6.Nc3 Nc6 7.Be2 Nd4 8.Qc4? (better is 8.Qb1 Bb4! 9.Bd3–/+) 8...Ne2 (better is 8...Nc2 9.Kd1 Na1-+) 9.Nge2+= a6 10.Ng3 (10.Qd5!? f6 11.Qb7=) 10...b5 11.Qd5 Bd6 12.Nce2 Ne7 13.Qb3 0-0 14.d4 ed4 15.Nd4 c5 16.Nde2 (16.bc5!? Bc5 17.Qc3+=) 16...c4 17.Qc3 Bg4 18.Nd4?? (18.Bb2 f6+=) 18...Qe8 (18...Be5 19.Bb2 Nc6 20.Nc6 Bc3 21.Bc3-+) 19.h3?? (19.0-0 Be5 20.Be3 Nc6+=) 19...Bd7 (better is 19...Nd5! 20.Qb2 Bb4 21.Kf1 Bc3-+) 20.Nge2 Ng6 21.Bg5 Qe4 22.Kd1? Qg2 23.Kc2 Qg5 24.Rag1 Qd5 25.h4 Qe4 26.Kb2 Nf4 27.Nc2 Qe2 28.Qg7 1–0. dumbroad – WirralBoy, ChessWorld.net, 2012.

4.Qb3 Nf6 5.d4 ed4 6.Bg5 h6-+ 7.Bf6 gf6 8.Qd5= Nc6 9.Nd2?? dc3-+ (10.Ne4 Nb4-+ (10...Bb4?! 11.a3 Ba5 12.0-0-0-+)) 0–1. civicracer – sgraindorge, net–chess.com, 2002.

4.e3=+ Nf6 5.Bb5 Bd6 6.a4 Bd7 7.Bc6 Bc6 8.f3 e4 9.f4 Qe7 10.g4 0-0-0 11.h4 h5 12.g5–/+ Ng4 13.Ne2 a6 14.Qb3 f5 15.Nd4 g6 16.b5+/– Bd7 17.ba6+- ba6 18.Ba3 c5 19.Nc2 c4?? 20.Qb6+/– (20…Be8 21.Qa6 Qb7 22.Qb7 Kb7 23.Bd6 Rd6 24.Nb4+/–) 1–0. mancroft – not Master, internet, 2007.

4.Nf3 e4 5.Nd4 Nd4 6.cd4 c6 7.e3 (7.Qb3!?–/+) 7...Bb4-+ (8.Qb3 Qe7-+) 0–1. rene822 – Caissa, Live Game Caissa's Web, 2004.

4.cd4= ed4 5.h3 (5.Nf3 Bb4 6.Qa4 Nc6 7.Nd4 Qf6+=) 5...Nf6 6.g4? (better is 6.Nf3!?=) 6...Bb4–/+ 7.f3? (7.g5 Nh5–/+) 7...d3! 8.ed3 (better is 8.Qa4!? Nc6 9.Qb5-+) 8...0-0-+ 9.h4 Nc6 10.h5 Nd4 11.a3 Qe7 12.Ne2?? (12.Be2 Bc5 13.h6-+) 12...Re8 (better is 12...Nf3 13.Kf2 Ng4 14.Kf3 Qc5-+) 13.Bd4+/– Nd5?? 14.g5 Qg5?? 15.f4?? Nf4 16.Rg1 Qh4 17.Bf2 Qh5 18.Be3 Qh4 19.Bf2 Nd3# 0–1. kevtheman – schmoid, gameknot.com, 2012. (=1.c3 e5 2.b4 d5 3.Bb2 d4)

4.Nf3= Nc6 5.e3 Bg4 6.Be2 e4 7.h3?? ef3-+ 8.Bf3 Bf3 9.gf3 d3 10.0-0 Nf6 11.f4 Bd6 12.c4 Qd7 13.a3 Qh3 (14.f3 Qg3 15.Kh1 Be7-+) 0–1. luthier – vello01, Caissa.com, 2004.

4.e3 a6 5.h3 g6 6.Ne2 Nf6 7.c4 Bb4 8.a3 Ba5 9.c5 Nc6 10.Nf4 0-0 11.Qa4 Bd7 12.Be2 b5 13.Qb3 Be6 14.Qc2 Nd7 15.0-0 b4 16.ab4 Bb4 17.Ba6 Nc5 18.f3 Ra7 19.fe4 de4 20.Ne6 fe6 21.d4 Ra6 22.Ra6 Na6 23.Qc6 Qc8 24.Rf8 Bf8 25.Qe4 c5 26.d5 Bg7 27.Bg7 Kg7 28.Nc3 ed5 29.Nd5 Qb7 30.Qe5 Kf7 31.e4 Nb4 32.Qf6 Ke8 33.Qh8 Kd7 34.Nf6 Ke6 35.Nh7 c4 36.Qf6 Kd7 37.Qd4 Kc8 38.Qc4 Qc7 39.Qg8 Kb7 40.Qb3 Qb6 41.Kh2 Nc6 42.Qd5 Qd4 43.Qf7 Kb6 44.Qg6 Kc5 45.Nf6 Qd6 46.Kh1 Ne5 47.Qf5 Qe7 48.g4 Kd4 49.h4 1–0. willi_weizenkeim – fighters, playchess.de, 2002.

4.e3 Nf6 5.Nh3 Bd6 6.a4 a5 7.b5 Ng4 8.Qb3 Be6 9.Ba3 d4 10.c4? Ba3 11.Na3 Qf6 12.0-0-0 d3 13.b6 c6 14.Rg1 Nf2 15.Re1 Qa1 16.Qb1 Qa3 17.Qb2 Qb2 18.Kb2 Nh3 19.gh3 0-0 20.h4 Bc4 21.Bh3 Ra6 22.Kc3 Bd5 23.Rb1 f5 24.Rg5 g6 25.h5 Kg7 26.Kd4 Nd7 27.Rbg1 Rf6 28.Bf5 Nf8 29.Ke5 Rb6 (30.hg6 Ng6 31.Bg6 hg6-+) 0–1. athar – Seimi Agus Eion, ChessWorld.net, 2005.

4.a3 Nf6 5.e3 Bd6 6.Nf3 Nbd7 7.d3 Qe7 8.Be2 e4 9.Nbd2?? (better is 9.de4 Be4 10.Nbd2=) 9...ef3-+ 10.Nf3 Bg4 11.0-0 Bf3 12.Bf3 0-0-0 13.e4 (13.c4 dc4 14.dc4-+) 13...de4 14.de4 Ne5 15.Re1 Nf3 16.Qf3 h5?? 17.Qe3?? g5 18.Qa7 Rdg8?? 19.Qa8 Kd7 20.Qb7 h4?? 21.h3?? g4?? 22.c4 gh3= 23.Bf6?? Rg2-+ 24.Kf1 Qf6 25.Re2 Rhg8 26.Qb5-+ Ke7 27.Ke1 Rg1 28.Kd2-+ Bf4 29.Kd3 Rd8 30.Kc2 Qd4 (30...Qd4 31.Rg1 Qd3 32.Kb2 Qe2 33.Ka1 Rd1 34.Rd1 Qd1 35.Ka2 Qc2 36.Ka1 h2 37.Qc5 Ke8 38.Qc6 Kf8 39.Qc5 Kg8 40.Qg5 Bg5 41.f4 h1Q) 0–1. Fournier,Frederic – Guest3386618, Partie amicale, 1m + 0s, 2008.

4.e3 Bd6 5.c4 c6 6.a3 Nd7 7.Nf3 Qc7 8.Be2 Bg6 9.Nh4 f5 10.0-0 Ngf6 11.c5+= Be7 12.f4 e4 13.d3 0-0-0 14.g3 Rdg8 15.d4 Qd8 16.a4 Qe8 17.b5= Rf8 18.Nc3 Ng4 19.Nf5 Bf5 20.Bg4 h5 21.Bf5+= Rf5 22.bc6 bc6 23.Ne2 h4 24.a5 Nf6 25.Rb1 Ng4 26.Bc1 Qh5 27.Qb3 hg3 28.Qb7 Kd8 29.Qa8 Kd7= 30.Rb7 Ke6–/+ 31.Re7 Ke7 32.Qb7 Kf6 33.Qc6 Kf7 34.Qd7 Kg6 35.h3 Qh3 36.Qe6 Nf6 (37.Qf5 Kf5 38.Ng3 Qg3#) 0–1. Kracikova,Kristyna – Pokorny,Jan, Plzen FSB B, 2003.

4.Nf3 Bd6 =+.

4.Qa4 Bd7 5.b5 a6 6.e3 Ne4 7.Nf3 White fights for the Initiative 7...Nc5 8.Qd1 Bg4 (8...e4!? 9.Nd4 ab5 10.Nb5 c6-/+) 9.d4= Bf3 10.gf3 ed4 11.cd4 Ne6 12.Qa4 c6 13.Nc3 Qb6 (13...Nc7 14.bc6 Nc6 15.Rc1=) 14.Rb1 Qa7 (better 14...Qd8!?=) 15.bc6+/- bc6 (better 15...Nc6!? 16.Nd5 Rd8+/-) 16.Nd5+- a5 17.a3 (17.Bc3 Be7+-) 17...Bd6 18.Bd3 0-0 19.Nf6 gf6 20.Rg1 Ng7 21.d5 Do you see the mate threat? 21...Be5 (21...cd5 22.Rg7) 22.Rg7! Kg7 Decoy to g7 23.Qg4 Kh8 24.Qf5 (24.Qf5 Qe3 25.fe3 Bc3 26.Bc3 cd5 27.Qh7) 1-0. marekt – miodrag, net-chess.com, 2020.

4.Qa4 Bd7 5.Qc2 Bd6 6.f3 c5 7.h3 cb4 8.g4 bc3 9.Bc3 d4 10.Bb2 Na6 11.Bg2 Nb4 12.Qb3 Rc8 13.f4 Nc2 14.Kf1 Na1 15.Qb7 Nc2 16.Qa7 0-0 17.a3 e4 18.g5 Nh5 19.Be4 Ng3 20.Kg2 Ne4 21.Nf3 Bf4 22.Bd4 Nd4 23.Qd4 Bc6 24.Qd8 Rfd8 25.h4 Nd2 26.Nc3 Nf3 27.Kf2 Ng5 28.hg5 Bh1 29.Ne4 Be4 30.e3 Rc2 31.Kf1 Rd1# 0–1. nimzou (1730) – pushtiu (2370), net–chess.com, 2014. (=1.c3 e5 2.b4 d5 3.Bb2 Nf6)

4.d3 c5 5.b5 (5.Nf3 Nc6 6.b5 Qb6+=) 5...d4 (5...Qa5 6.Qd2–/+) 6.c4 e4 (6...Bd6 7.e3–/+) 7.Nd2 ed3 8.ed3 Bd6 9.Ngf3 Bg4 (9...0-0 10.Be2=+) 10.Be2=+ 0-0 (10...Bf5 11.0-0=+) 11.0-0 (11.Nd4 Qe7 12.Nc2 Re8+=) 11...Re8 (11...Bf5 12.Re1=+) 12.Re1 (12.Nd4 Be5 13.Bg4 Bd4 14.Bd4 Qd4 15.Bf3+/–) 12...Qc7 13.Nf1 Nbd7 14.h3 Bh5 15.Bc1 Re7 16.a4 Rae8 17.Ra2 (better is 17.Bd2–/+) 17...Bf3-+ 18.gf3 Nh5 19.Kg2 Bf4 20.Bd2? (better is 20.Nd2-+) 20...Bd2 21.Rd2 Nf4 22.Kh1 Nh3 23.Ng3 (23.Kg2 Nf4 24.Kg1-+) 23...Nf2 (24.Kg2 Nd1 25.Rdd1 Qa5-+) 0–1. Fritz,Marco – Schmidt,Jewgeniy, remoteschach.de, 2001.

4.d3 c5 5.bc5 Bc5 6.Ba3 Nbd7 7.Bc5=+ Nc5 8.e3 0-0 9.d4 ed4 10.cd4 Nce4 11.Bd3 Nf2 12.Kf2 Ng4 13.Ke1 Ne3 14.Qd2 Qh4 15.Qf2? Qd4-+ 16.Qd2 Ng2!! 17.Kd1 Bg4 18.Be2 Qa1 19.Bg4 Rae8 20.Nf3 Qb1 21.Qc1 Ne3 22.Kd2 Qa2 23.Kd3 Ng4 24.Rg1 Nf2 25.Kd4 Re4 26.Kc5 Qa5 27.Kd6 Rd8# 0–1. retard – pierre (2210), internet, 2007.

4.d4 e4 5.g3 b6 6.Bh3 Bh3 7.Nh3 Nc6 8.Qa4 Qd7 9.Qa6 Qh3 10.Qb7–/+ Qc8 11.Qc6+= Nd7? 12.Qd5+- Nf6 13.Qc6 Nd7 14.Qe4 Be7 15.b5 0-0?? 16.h4 Re8+/– 17.h5 Ba3 18.Qg4?? Bb2-+ 19.h6 g6 20.Nd2 Ba1 21.Nb1 Nf6 22.Qf3 Qe6 23.Kf1 a6 24.d5 Nd5 25.e4 Qe4 26.Qd1 Qh1 0–1. clemyp – dunkind, net–chess.com, 2003.

4.Nf3 Nbd7 5.g3 e4 6.Bg2? ef3-+ 7.Bf3 Bd6 8.d4 0-0 9.Nd2 Re8 10.e3 Nb6 11.Qe2 Bh3 12.0-0-0 Qd7 13.Nb3 Qa4 14.Na5 Qa2 15.Rd2 Bf5 16.e4 Ne4 17.Be4 Be4 18.Kd1 Na4 19.Ke1 Bh1 20.Qe8 Re8 21.Kd1 Qb1 22.Bc1 Nc3 0–1. Papa Lazarou II – marekt, ChessWorld.net, 2004.

4.g3 Bd6 5.Bg2 0-0 6.Nf3 e4 7.Nd4=+ a5 8.a3 Nc6 9.Nc6=+ bc6 10.0-0 Ng4 11.f4 ef3 12.ef3? Nh2!-+ 13.f4 Bg4 14.Qc2 Nf1 15.Bf1 Re8 16.d4 Re1 17.Ra2 Bh3 18.Nd2 Qe7 19.Qd3 Re3 20.Qc2 Rg3 21.Kh2 Qe3 (22.Nf3 Qf4 23.Bh3 Rf3 24.Kg1 Qe3 25.Kg2 Rg3 26.Kh1 Qg1; 21...Qh4 22.Nf3 Rf3 23.Qh7 Kh7 24.Bd3 Bf5 25.Kg1 Qg4 26.Kh2 Rh3) 0–1. savage13 – bicycle, ChessWorld.net, 2007.

4.h3 Bd6 5.d3 a5 6.ba5 Nc6 7.e3 0-0 8.Nf3 Ra5 9.Be2 e4 10.de4 de4 11.Nh2? (better is 11.Nd4-+) 11...Nd5 12.0-0 (12.Nd2 Ne3! 13.fe3 Bg3 14.Kf1 Qf6 15.Nhf3 ef3 16.Nf3 Re8-+) 12...Qg5 13.Bg4 (13.Nd2 Bh3 14.Ng4 Bg4 15.Bg4-+) 13...Ne3! 14.fe3 Qe3 15.Rf2 Bh2 16.Kf1 (16.Kh2 Qf2 17.Qe2 Qf4 18.g3 Bg4 19.hg4 Qh6 20.Kg2 Rd5-+) 16...Bg3 17.Re2 (17.Qe2 Bf2 18.Qf2 Qf2 19.Kf2 Bg4 20.hg4-+) 17...Qf4 18.Kg1 Bg4 19.hg4 Qh6 20.Re4 Qh2 21.Kf1 Qh1 22.Ke2 Qg2 23.Kd3 Rd8 24.Kc4 Qe4 (24...Rd1?? 25.Re8; 24...Qb2?? 25.Qd8 Nd8 26.Re8) 25.Kb3 (25.Qd4 Qe2 26.Kb3 Rb5 27.Qb4 Qd1 28.Ka3 Rb4 29.cb4 Ra8) 25...Qa4 0–1. lincolnxavi – pierred (2765), net–chess.com, 2014.

4.h3 e4 5.e3 Be7 6.a3 (6.Ne2 Nc6–/+) 6...0-0-+ 7.Ne2 Nbd7 8.d4 ed3! 9.Qd3 Ne5 10.Qc2 Ne4 11.Nd4? (11.Nd2 Bh4 12.Ne4-+) 11...Bh4 12.g3 Bg3! 13.fg3 Qg5 14.g4? (14.Qg2 Qe3 15.Kd1-+) 14...Qh4 15.Kd1 Ng4! 16.Qb3 (16.hg4 Nf2 Double attack (16...Qh1 Pinning; 16...Qh1 Deflection; 16...Qg3 Decoy)) 16...Ne3 17.Kc1 Qe1 18.Qd1 Qd1 0–1. lincolnxavi – pierred (2765), net–chess.com, 2014.

4.Ba3 ab4 5.Bb4 c5 6.Ba3 Nc6 7.e3 c4 8.Qb2 Ba3 9.Na3 e4 10.Nb5 Nf6 11.Nd4 Nd4 12.cd4 0-0 13.f3 Qa5 14.h3 ef3 15.Nf3 Re8 16.Kd1 (16.Ne5 Ne4 17.g4 f6-+) 16...Ne4 17.Rh2 b5 18.g4 f5 (18...b4 19.Rb1-+) 19.g5 g6 (19...f4 20.ef4 Rf8 21.Ne5-+) 20.h4 f4 21.Ne5 fe3 22.de3 Rf8 23.Kc2?? (Better is 23.Bg2 Bf5 24.h5-+) 23...Qa4 24.Kb1 Rf1 25.Qc1 Qb4 26.Rb2 Nd2 27.Kc2 Bf5 28.Nd3 cd3 0–1. holmwood – Caissa, Live Game Caissa's Web, 2004.

4.ba5 Nf6 5.e3 Ra5 6.d4 Nbd7 7.f3 Bd6–/+ 8.Be2 0-0 9.Bb2 Re8 10.Nh3 Nb6 11.Nf2–/+ Nc4 12.Bc4 dc4 13.Qc4 Nd5 14.Qe2 Ne3! 15.Ne4 (15.Qe3 ed4) 0–1. perspective08 – pierre (2055), internet, 2006.

4.Qa4 Qd7–/+ 5.Qd7 Bd7 6.e3 Nf6–/+ 7.a4 Be7 8.Bb5 0-0 9.Bd7 Nbd7 10.Nh3 a6 11.Ng5 h6 12.Nf3 e4 13.Ng1 Ne5-+ 14.Nh3 Nd3 15.Kd1 Ne5 16.Nf4 Neg4 17.Rf1 Nh2-+ 18.Re1 Nhg4 19.g3? Nf2 20.Ke2 N2g4 21.Rh1 c6 22.c4 dc4 23.Bb2 Bb4 24.Bf6 Nf6 25.Ra2 a5 26.d4 Rfe8 27.Rb2 b5 28.ab5 cb5 (29.Rc2 Rec8-+) 0–1. manofsteel2 – over10inches, Live Game Caissa's Web, 2005.

4.d4 e4 5.e3 a6 6.Ne2 h6 7.Nf4 Nf6 8.b5 a5 9.a4 b6 10.c4 g5 11.Nh3 (better is 11.Ne6!? fe6 12.Nc3+=) 11...Bb4 12.Bd2 Bd2 13.Nd2 Bh3 14.gh3 c6 15.bc6 Nc6 16.Qb5 Qc7?? (better is 16...Rc8+=) 17.cd5+- 0-0 18.Qc6 Qc6 (18...Qd8 19.Nc4 Re8 20.h4 Qd5 21.Qb6+- (worse is 21.Qf6 Re6 22.hg5 Rf6 23.gf6 Qc6+-)) 19.dc6 Rfc8 20.Bb5 Ra7 21.0-0 Kg7 22.Nc4 Rb8 23.Nd6 Rc7 24.f3 ef3 25.Rf3 Rd8 26.Nc4 Nd5 27.Ne5 f6 28.Nd7 Re8 29.Bc4 Ne3 30.Re1 (better is 30.Nf6 Ree7 31.Bb5 Nc2+-) 30...Rc6 31.Rfe3 (better is 31.Bb5 Rce6 32.Rf6 Rf6 33.Nf6+-) 31...Re3+/– 32.Re3 Rc4 33.Nb6 Rd4 34.Rg3 Rb4 35.Nd5 Ra4 36.Rf3 Ra1 37.Rf1 (better is 37.Kg2+=) 37...Rf1+= 38.Kf1 f5 39.Kf2 Kf7 40.Ne3 Ke6 41.Ke2 f4 42.Nc2 Kd5 43.h4 g4–/+ 44.Kd1 f3 45.Ne3+= Kc5 46.Ng4 a4? 47.Ne3?? Kb4= 48.Kc2 Ka3 49.Kb1 Kb3= 50.Nd1 a3 51.Ka1 Kc2 52.Ne3 Kd2 53.Ng4? h5-+ 54.Ne5 f2 55.Nf3 Ke3 56.Ng5 f1Q 57.Ka2 Qf2 58.Ka3-+ Qh4 59.Ne6 Qe7 60.Nc5 Qc5 61.Kb3 Kd3 62.h4 Qc4 63.Kb2 Qc3 64.Kb1 Qd2 65.Ka1 Kc3 66.Kb1 Qb2 0–1. maddoxdb – leonardo02, gameknot.com, 2011. (=1.c3 e5 2.b4 d5 3.Qb3 Be6)

4.d4 ed4 5.cd4 Nc6 6.Nc3 (better is 6.Qe3!? Qe7 7.a3–/+) 6...Nd4-+ (worse is 6...Nb4 7.a3 Nc6 8.Nf3–/+) 7.Bg5?? (better is 7.Qd1 Ne6 8.a3-+) 7...Nb3 8.e3 (8.ab3 Bb4 9.Bd2-+) 8...Na1 0–1. georginoh (1715) – fleury (2330), net–chess.com, 2013.

4.e3 Nc6 5.Nf3 Be7 6.Bb5 0-0 7.h3 a5 8.Bc6 bc6 9.Ne5 Qd6 10.d4 Rb8 11.Nd2 ab4 12.cb4 Rb4 13.Qc3 c5 14.Ba3 Rb5 15.Bc5 Rc5 16.dc5 Qc5 17.Qc5 Bc5 18.0-0 Re8 19.Nef3 Bb4 20.Rab1 Ba5 21.Nb3 Bb6 22.Nfd4 Ne4 23.a4 Ba6 24.Rfc1 Bc4 25.Nc6?? Bb3?? 26.Rb3+- Ra8 27.Ra1 Nc5 28.Rb4 Nd3 29.Rg4 Nb2 30.a5 Bc5 31.a6 Nc4 32.Kf1 Nb6 33.Ra5 Bd6 34.Rd4 Kf8 35.e4 Re8 36.ed5 Nc4 37.Rc4 1–0. sundfar – thedarkegg, HCL–B2248 playchess.de, 2003.

4.e3 Be6 5.Qa4 Qd7 6.Qd7 Bd7 7.a4 a5 8.Bb5? (better is 8.b5!?+=) 8...c6 9.Be2 ab4 10.cb4 Bb4 11.Ba3? (better is 11.Bb2 e4 12.f3-+) 11...Ra4 12.Nf3 e4 13.Ne5 Be6 14.Bb2 Ra1 15.Ba1 b5 16.0-0 h5 17.Rc1 0-0 18.Nc6 Bd6 (better is 18...Rc8!? 19.Bf6 gf6 (19...Rc6?! 20.Rc6 Nc6 21.Bc3+=; 19...Nc6?! 20.Bb5 Na7 21.Rc8 Bc8 22.Bc3+=) 20.Bb5 Bd7-+) 19.Bb5 Nfd7 20.h4 Nf6 21.Bf6 gf6 22.Ba4 d4?? (22...Bd7 23.Nb8 Ba4 24.Nc6+=) 23.Nb8 (better is 23.Nd4!? f5 24.Bd1+/–) 23...Bb8 24.ed4 f5 (better is 24...Rd8!?=) 25.Nc3+/– Rc8 (better is 25...Kg7!? 26.d5 Bc8+/–) 26.Rb1+- Kg7 (better is 26...Bc4 27.Bd7 Rd8 28.Bf5 Bd3+-) 27.d5 e3 (27...Be5 28.de6 fe6 29.Rb7 Kf6+-) 28.fe3 f4 (28...Kf6 29.de6 fe6 30.Rb6+-) 29.de6 Bd6 (29...fe6 30.Bd7 Rf8 31.Be6 fe3 32.de3+-) 30.Nd5 (better is 30.Ne4!? Be7 31.Rb7 fe3 32.de3 Kf8+-) 30...fe6 31.Nf4 Ra8 32.Rb7 Kh6 33.Bc6 Ra2 34.Ne6 Bg3+- 35.Rf7 Rd2 36.Nf8 Rd1+- 37.Rf1 Rd6 38.Rf3 Bh4?? 39.Bb5+- Bg5 40.Rf7 Be3 41.Kf1 Rd2 42.Be2 h4 43.Rh7 Kg5 44.Rh5 Kf4 45.Rh4 Kg5 46.Rh5 Kf6 47.Rh3 Ba7 48.Rf3 Ke5 49.Ng6 Ke6 50.g4 Rc2 51.g5 Rc1 52.Kg2 Rg1 53.Kh2 Rg5 54.Nf8 Ke7 55.Bc4 Kd6 56.Rf6 Ke5 57.Rf7 Rg4 58.Bd3 Bd4 59.Ng6 Kd6 60.Rf4 Be5 61.Ne5 Rf4 62.Nc4 Kc5 63.Na5 Kd4 64.Ba6 Rg4 65.Nb3 Ke3= 66.Bb7 Kf2 67.Bc8 Rg2 68.Kh3 Rg3 69.Kh4 Rb3 70.Kg5 Rf3 71.Kg4 Rf8 72.Be6 Ke3 73.Bd5 Kd4 74.Bb7 Ke5 75.Kg3 Rf7 76.Ba8 Kd4 77.Kg4 Ke5 78.Kg3 Ra7 79.Bc6 Rg7 80.Kf3 Rc7 81.Ba8 Kf5 82.Ke3 Rd7 83.Ke2 Kf4 84.Bc6 Rc7 85.Ba8 Ke5 86.Kf3 Rc3 87.Ke2 Kd4 88.Kf2 Ra3 89.Bf3 Ra2 90.Kg3 Ke3 91.Bc6 Ra6 92.Bb5 Rg6 93.Kh2 Kf2 94.Kh3 Kf3 95.Kh4 Kf4 96.Kh3 Kf3 97.Kh2 Kf2 98.Kh3 Rg3 99.Kh2?? Rg5-+ 100.Bd7 Rh5 101.Bh3 Rh6 102.Kh1 Rh3 0–1. maddoxdb – blindstein, gameknot.com, 2012. (=1.c3 e5 2.b4 d5 3.Qb3 Nf6)

4.g3 Be6 5.d4 ed4 6.cd4 Nc6 7.a3 Nd4-+ 8.Qa4 c6 9.Nc3? b5 10.Qd1 Bd6?? 11.Bg5?? 0-0?? 12.Qd4+/– Re8 13.Nf3 1–0. salaschess (1800) – nbarletta (1735), net–chess.com, 2001.

4.b6 cb6 5.a4 Nf6 6.a5 (6.d4!?–/+) 6...ba5-+ 7.Nf3 Bd6 8.Na3 Nc6 9.c4 e4 10.cd5 Nd5 (10...ef3?! 11.dc6 Be5 12.Rb1–/+) 11.Qb3 (11.Ng1-+) 11...Ba3 (11...ef3?! 12.Qd5 fe2 13.Be2-+) 12.Ba3 ef3 13.e4 (13.Qf3 Ndb4 14.Bb4 ab4-+) 13...fg2 14.Bg2 Nf4 15.Rg1 (15.Bf1 Nd4 16.Qg3 Nc2 17.Kd1 Na1 18.Qf4-+) 15...Nd3 16.Ke2 Nd4 17.Kd3 Nb3 18.Kc2 Qd2 19.Kb3 Be6 20.Ka4 b5# 0–1. Rettkowski,Marcel (1620) – Farmer,Walter (2260), remoteschach.de, 2002.

4.d4 ed4 5.Qd4 Nf6=+.

4.e3 ab5 5.Bb5 c6 6.Be2 Bd6 7.Nf3 e4 8.Nd4 Qg5 9.Kf1 f5 10.c4 Nf6 11.h4 Qg6 12.cd5 cd5 (12...Nd5?? 13.Bh5 Qh5 14.Qh5 g6 15.Qd1+-) 13.h5 Qg5 14.Nb5 Be5 15.N1c3 0-0 16.d4 ed3 17.Qd3 Be6?? (better 17...Qh6=) 18.f4+- (18.f4 Qh6 19.fe5+-) 1-0. PERIERA – Kinnmu, internet, 2022.

4.Ba3 ab4–/+ 5.cb4 Nc6 6.b5 Nd4-+ 7.Qc1? Ra3! 8.Na3 Ba3 9.Qa3 Nc2 (10.Kd1 Na3-+ (10...Na1?! 11.Qc3–/+)) 0–1. TomScot – Caissa, Caissa.com, 2004.

4.ba5 Nc6 5.Qa4 (5.a6 ba6 6.d3 Nf6–/+) 5...Ra5–/+ 6.Qb3 Nf6 7.g3 Ne4 (7...Bc5 8.Ba3–/+) 8.d3 Nc5 9.Qc2 Bf5 10.h4 h6 11.Bh3 Bh3 12.Nh3 Be7 13.d4 (Better is 13.Nd2!?–/+) 13...ed4-+ 14.cd4 Nd4 15.Qc3 (15.Qb2 Bf6 16.Qd2 Ndb3 17.ab3 Ra1-+ (17...Ba1? 18.Qa5 Bd4 19.e3+-)) 15...Ncb3! 16.ab3 (16.Qb3 Nb3) 16...Ra1 17.Qa1 Nc2 18.Kd2 Na1 19.Kc3 Bf6 20.Kb4 Qd6 21.Kb5 Qc6 22.Kb4 Nc2 23.Ka5 Qa6# 0–1. zouloumis – Caissa, Live Game Caissa's Web, 2004.

4.d4 cd4–/+ 5.cd4 Bb4 6.Nd2 ed4 7.Qa4 Nc6 8.Qb3 a5 9.Qa4 Bd7 10.Qb3 Nf6 11.h3? a4 12.Qg3 0-0 13.Rb1 Ne4 14.Qf3 Ne5 15.Qf4 Ng6 16.Qf3 Bd2 17.Bd2 Nd2 18.Kd2 Qa5 19.Kd1 a3 20.e4 Ba4 21.Ke2 Ne5 22.Qa3 Bb5 23.Kd1 Qa3 24.Bb5 Qa2 25.Rb4 Rfc8 26.Ke1 Rc1# 0–1. jimmyjazz – Shakkimestari, internet, 2007.

4.Nf3 Qc7 5.Nbd2 Bd6 6.Nb3 cb4–/+ 7.Bd2? Ne7?? 8.e3?? a5 9.e4? bc3-+ 10.Bg5 f6 11.Bh4 (11...c2 12.Qc1 Qc3 13.Qd2-+; 11.Be3 c2 12.Qc1 a4-+). Nexxus6 – willow27, ChessWorld.net, 2007.

4.Qc2 Bd6 A) 5.Bb2 Nf6 (5...Na6 6.Nf3 Nf6 7.g3 e4 8.de4 de4 9.Nd4 Be5 10.Nd2 Bd4; 5...Nd7 6.Nf3 Ngf6 7.Nbd2 a5 8.a3 Qb6 9.e3 0-0 10.Be2 ab4; 5...Be6 6.Nf3 Nf6 7.c4 Nbd7 8.c5 Bc7 9.Nbd2 0-0 10.Ng5 Bf5) 6.Nf3 a5 7.c4 ab4 8.c5 Bc7 9.Nbd2 Nbd7 10.a3 ba3; B) 5.Nf3 Nf6 6.Nbd2 0-0 7.Bb2 a5 8.a3 Qb6 9.e3 Bf5 10.Be2 ab4; C) 5.c4 Na6 (5...Nf6 6.c5 Bc7 7.Nc3 Na6 8.Rb1 0-0 9.Nf3 Re8 10.Bg5 h6; 5...Bb4 6.Bd2 Qe7 7.Nf3 Nf6 8.Bb4 Qb4 9.Qc3 Qc3 10.Nc3 d4; 5...dc4 6.dc4 Nf6 7.c5 Bc7 8.Nc3 a5 9.b5 Nbd7 10.Nf3 0-0) 6.c5 Bc7 7.Nf3 Nf6 8.a3 0-0 9.Nc3 Re8 10.Bb2 Bf5; D) 5.Nd2 Nf6 (5...Nd7 6.Ngf3 Ngf6 7.g3 a5 8.ba5 Qa5 9.Bg2 0-0 10.0-0 Re8) 6.Ngf3 Nbd7 7.g3 a5 8.ba5 Qa5 9.Bg2 0-0 10.0-0 Re8.

4.Qc2 Nd7 A) 5.Na3 Be7 (5...Ngf6 6.Nf3 Bd6 7.e4 0-0 8.Be2 b5 9.0-0 a5 10.Rb1 Qe7; 5...Bd6 6.Nf3 Ngf6 7.e4 0-0 8.ed5 Nd5 9.Nc4 N7b6 10.Be2 Bf5) 6.Nf3 Ngf6 7.g3 e4 8.de4 Ne4 9.Nd4 0-0 10.f3 Nd6; B) 5.Nf3 Ngf6 (5...Be7 6.g3 Ngf6 7.Na3 0-0 8.Bg2 e4 9.de4 Ne4 10.0-0 a5) 6.Na3 Bd6 7.e4 b5 8.Qb3 Nb6 9.Be2 de4 10.de4 0-0; C) 5.h3 Ngf6 (5...Bd6 6.Nf3 Ngf6 7.Nbd2 0-0 8.Bb2 a5 9.a3 Re8 10.e3 ab4; 5...a5 6.b5 cb5 7.Nf3 Ngf6 8.Na3 Qb6 9.Rb1 b4 10.e3 Qc6) 6.Nf3 Bd6 7.Nbd2 0-0 8.Rb1 Re8 9.g4 a5 10.b5 cb5; D) 5.Bb2 a5 (5...Ngf6 6.Nd2 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Be7 10.Ngf3 0-0; 5...Bd6 6.Nf3 Ngf6 7.g3 a5 8.a3 0-0 9.Nbd2 Nb6 10.Bg2 ab4; 5...Qb6 6.Nf3 Ngf6 7.Nbd2 a5 8.ba5 Qa5 9.g3 Bd6 10.Bg2 0-0; 5...Be7 6.Nf3 Ngf6 7.g3 a5 8.a3 Qb6 9.Nbd2 Ng4 10.e3 0-0) 6.a3 ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.Nd2 Bd6 10.Ngf3 0-0.

4.Qc2 Be6 5.a3 (5.Nf3 Nd7=+ 6.Nbd2 Ngf6 7.Ng5 Bd6 8.Ndf3 a5 9.ba5 Qa5 10.Ne6 fe6; 5.Nd2 Nd7 (5...Nf6 6.Ngf3 Nbd7 7.Nb3 Bd6 8.Nc5 Bc5 9.bc5 0-0 10.Rb1 e4) 6.Ngf3 Ngf6 7.Ng5 Bd6 8.c4 0-0 9.c5 Bc7 10.Ndf3 Qe7) 5...Bd6–/+ (5...Nf6 6.Nf3 Nbd7 7.Nbd2 Bd6 8.Ng5 0-0 9.Ndf3 a5 10.Ne6 fe6; 5...Nd7 6.Nf3 Ngf6 7.g3 a5 8.Bb2 Bd6 9.Bg2 0-0 10.Nbd2 ab4) 6.g3 (6.c4 Nf6 7.c5 Be7 8.Nf3 Nbd7 9.Ng5 0-0 10.Nc3 Bf5) 6...Ne7 (better 6...Nf6–/+ 7.Nf3 0-0 8.Bg2 Nbd7 9.0-0 a5 10.Bb2 ab4) 7.f3? (better 7.Nf3=+ Nd7 8.Bg2 0-0 9.0-0 a5 10.Bb2 h6) 7...0-0 8.e4 (8.Bh3 Nd7-+) 8...f5 (8...a5 9.Bb2-+) 9.Bg2 (9.Nh3 Na6-+) 9...Nd7 (9...de4 10.fe4 a5 11.Nf3 ab4 12.cb4 Bb4 13.Bd2 fe4 14.de4-+) 10.Nd2 (10.Nh3 h6-+) 10...fe4 11.fe4 (11.de4 Nf6 12.Bh3 Bh3 13.Nh3-+) 11...de4?? (11...Qb6!? 12.Ndf3-+) 12.de4? (better 12.Ne4 Bc7 13.Ng5=+) 12...Qb6 (better 12...Nf6-+) 13.Nb1? (13.Ndf3 Rad8-+) 13...Ng6 (better 13...a5 14.Bh3 Bh3 15.Nh3 ab4 16.cb4 Bb4 17.Ke2 Bc5-+) 14.Nf3 Bg4 (better 14...a5!? 15.Qd3 c5 16.ba5 Ra5–/+) 15.Qe2 (15.Qd3 Bc7–/+) 15...a5 16.Be3 Qc7 (16...Qb5 17.c4 Bf3 18.Bf3 Qa4=) 17.Nbd2 b5 18.0-0 Be7 (18...Nf6 19.c4=) 19.h3= Be6 20.Bg5 (20.Ng5!? Bg5 21.Bg5=) 20...Nf6–/+ 21.Kh2 h6 22.Be3 Rad8 (22...Rfd8 23.c4–/+) 23.Rf2 (23.a4 ab4 24.cb4 ba4 25.Ra4 Ra8 26.Ra8 Ra8=+) 23...Kh7 (23...Rf7 24.c4–/+) 24.Re1 (24.Rff1 Ra8–/+) 24...ab4 25.ab4 Ra8 26.Rc1 Ra2 27.Qe1 Rfa8 (27...Rd8 28.Ra1–/+) 28.Bf1 (28.c4 Rb8–/+) 28...Qd7 29.Rd1 Qb7 30.Bd3 (30.Bg2 Qc7–/+) 30...Qc8 (30...Bh3 31.Bb1 Qc8 32.Ba2 Ng4 33.Kg1 Nf2 34.Kf2 Ra2 35.Ra1-+) 31.Qf1 (31.g4 Qc7–/+) 31...R8a6 (31...Bh3!? 32.Qh3 Ng4 33.Kg1 Ne3 34.Qc8 Rc8 35.Rc1-+) 32.Nb1 (32.c4 R6a3 33.cb5 Bh3 34.Qh3 Ng4 35.Kg1 Rd3-+) 32...Rf2 (better 32...Ra1–/+) 33.Qf2? (better 33.Bf2 Ra1 34.Be3–/+) 33...Ra7?? (33...Bh3 34.Qe2-+) 34.Rd2 (better 34.Ba7 Bh3 35.Kh1+-) 34...Bh3-+ 35.Kg1 (35.Qg1 Ra8-+) 35…Ra1 0–1. Cvetkovic,Miloslav (2055) – Nesovanovic,Miroslav, 17th Belgrade Trophy, Obrenovac SCG (2), 2004.

4.Qc2 Nf6 A) 5.g3 Bd6 (5...a5 6.Nf3 Bd6 7.Nbd2 ab4 8.cb4 Nbd7 9.Bb2 Bb4 10.Bg2 0-0) 6.Nd2 0-0 7.Ngf3 a5 8.ba5 c5 9.Bg2 Nc6 10.0-0 Qa5; B) 5.Nd2 Bd6 (5...Nbd7 6.Ngf3 Bd6 7.g3 a5 8.ba5 Qa5 9.Bg2 Nc5 10.Ne5 Be5) 6.Ngf3 0-0 7.Bb2 a5 8.a3 Qb6 9.e3 Bf5 10.Be2 ab4; C) 5.h4 Bd6 (5...Na6 6.Nf3 Bd6 7.Nbd2 0-0 8.e4 Bg4 9.Be2 c5 10.b5 Nc7) 6.Nd2 0-0 7.Bb2 Bg4 8.Ngf3 Nbd7 9.e3 a5 10.a3 Re8; D) 5.Nf3–/+ Bd6 (5...Nbd7 6.g3 a5 7.ba5 Qa5 8.Bg2 Bd6 9.0-0 0-0 10.Nbd2 Re8) 6.Nbd2 0-0 7.Bb2 Re8 8.g3 a5 9.a3 Nbd7 10.Bh3 ab4.

4.Nd2 A) 4...Bd6 A1) 5.c4 Nf6 (5...Nd7 6.Ngf3 Ngf6 7.c5 Bc7 8.Bb2 0-0 9.Qa4 e4 10.de4 de4; 5...Bb4 6.Rb1 Bd6 7.d4 ed4 8.Ngf3 Nf6 9.cd5 Qa5 10.Nd4 0-0) 6.c5 Bc7 7.Ngf3 Na6 8.Bb2 Qe7 9.Qb3 0-0 10.g3 b6; A2) 5.Ngf3 Nf6 6.Bb2 0-0 7.e3 a5 8.Be2 Bf5 9.a3 Nbd7 10.0-0 h6; A3) 5.Bb2 Nf6 6.Ngf3 0-0 7.g3 Bf5 8.Bg2 a5 9.0-0 ab4 10.cb4 Nbd7; A4) 5.g3 Nf6 (5...a5 6.Ngf3 Nf6 7.Bb2 0-0 8.Bg2 Bf5 9.0-0 ab4 10.cb4 Nbd7) 6.Ngf3 a5 7.a3 0-0 8.Bb2 Bf5 9.Bg2 Nbd7 10.0-0 ab4; B) 4...Nd7 B1) 5.Ngf3 Ngf6 (5...Be7 6.Bb2 Ngf6 7.g3 a5 8.a3 0-0 9.Bg2 b5 10.0-0 Qb6) 6.Bb2 Be7 7.g3 0-0 8.Bg2 Qb6 9.0-0 a5 10.a3 Bd6; B2) 5.Bb2 a5 6.Ngf3 ab4 7.cb4 Bb4 8.Ne5 Ngf6 9.a3 Bd6 10.Ndf3 0-0; C) 4...Nf6 C1) 5.Ngf3 Bd6 (5...Nbd7 6.Bb2 Bd6 7.g3 0-0 8.Bg2 a5 9.a3 Nb6 10.0-0 Bf5) 6.c4 Bb4 7.Qb3 Qe7 8.a3 Bd6 9.d4 Nbd7 10.cd5 cd5; C2) 5.Nb3 Nbd7 (5...Na6 6.Nf3 Bd6 7.g3 0-0 8.Bg2 Bf5 9.0-0 Qe7 10.Na5 c5; 5...Bd6 6.Nf3 Nbd7 7.g3 Qe7 8.Bg2 e4 9.Nfd4 ed3 10.Nf5 de2; 5...Bf5 6.Nf3 Nbd7 7.g3 Be7 8.Bg2 0-0 9.0-0 Qc7 10.Nh4 Be6) 6.Nf3 Bd6 7.g3 0-0 8.Bg2 e4 9.Nfd4 ed3 10.Qd3 Ne5; C3) 5.Bb2 Bd6 (5...Nbd7 6.Ngf3 Be7 7.g3 0-0 8.Bg2 e4 9.de4 de4 10.Nd4 c5; 5...a5 6.Ngf3 Nbd7 7.a3 Bd6 8.g3 0-0 9.Bg2 b5 10.0-0 Nb6; 5...Be7 6.Ngf3 Qc7 7.g3 0-0 8.Bg2 h6 9.0-0 Be6 10.Nb3 Nbd7; 5...Na6 6.Ngf3 Bd6 7.g3 0-0 8.Bg2 Bg4 9.0-0 Qb6 10.a3 Nb8) 6.Ngf3 0-0 7.g3 a5 8.Bg2 ab4 9.cb4 Bb4 10.Ne5 Nbd7.

4.Nf3 Nd7=+ A) 5.Be3 Be7 (5...Ngf6 6.Nbd2 Bd6 7.g3 Ng4 8.Bh3 Ne3 9.fe3 Qb6 10.d4 0-0; 5...Bd6 6.g3 Ngf6 7.Bh3 a5 8.Qb3 ab4 9.cb4 Qe7 10.0-0 Bb4; 5...a5 6.b5 cb5 7.Qb3 Ngf6 8.Qb5 Bd6 9.Nbd2 Qc7 10.c4 d4; 5...Nh6 6.Nbd2 Ng4 7.Bg5 Qb6 8.Bh4 Bd6 9.e3 0-0 10.Be2 a5) 6.Nbd2 Ngf6 7.g3 a5 8.a3 Ng4 9.Bh3 f5 10.Nb3 Ne3; B) 5.Nbd2 Ngf6 (5...Bd6 6.g3 Ngf6 7.Bb2 0-0 8.Bg2 a5 9.a3 Nb6 10.0-0 Bf5) 6.Bb2 a5 7.a3 Bd6 8.c4 0-0 9.c5 Bc7 10.e3 h6; C) 5.g3 Ngf6 (5...Bd6 6.Nbd2 a5 7.Bb2 ab4 8.cb4 Bb4 9.Bg2 Ngf6 10.Ne5 Ne5) 6.Bg2 a5 7.b5 Bc5 8.bc6 bc6 9.d4 Bd6 10.Ba3 Ba3; D) 5.Na3 Ngf6 6.g3 a5 7.b5 Bc5 8.Bg2 Qe7 9.bc6 bc6 10.Nc2 e4.

4.d4 e4 5.Na3 c6 6.Rb1 Qe7 7.Nc2 Nf6 8.Bg5 h6 9.Bh4 g5 10.Bg3 Bg3 11.hg3 Ng4 (11...Be6 12.a4=+) 12.e3= Qf6 (12...Nf6!?=) 13.f3+= Ne3? (Better is 13...ef3 14.gf3 Qd6 15.fg4 Qg3 16.Kd2 Bg4+/–) 14.Ne3+- ef3 15.Nf3 0-0 16.Ne5 Nd7 17.N5g4 Qe7 18.Nh6 (18...Kg7 19.Nhf5 Kg8 20.Ne7 Kg7 21.N3f5 Kf6 22.Rh6#) 1–0. orane (2100) – forteress (1705), Live Game Caissa's Web, 2004.

4.Nf3 Nf6 5.g3 0-0 6.Bg5 h6 7.Be3 Ng4 8.Bd2 e4 9.de4 de4 10.Nh4 Qf6-+ 11.Be3 Ne3 12.fe3 Nc6 13.Bg2 g5 14.Rf1 Qe5 15.Qb3 gh4 16.Kd1 Be6 17.Qc2 f5 18.Nd2 Nb4! 19.Qb2 hg3 20.hg3 Rad8 21.Rf4 Qg7 22.Rf1 Be5 23.Qb4 Bc3 24.Qb1 Rd2 25.Kc1 Bb2 26.Kd2 Qc3 27.Kd1 Rd8 28.Qd3 ed3 29.ed3 Qd3 30.Ke1 Qe3# 0–1. Nexxus6 – marekt, ChessWorld.net, 2007.

4.Nf3 h6 5.e4= Nf6 6.Be2 0-0 7.0-0 de4 8.de4 Ne4 9.Nbd2? Bf5?? 10.Ne4–/+ Be4 11.Re1 Nc6 12.Nd2 Bf5 13.Nf3 e4 14.Nd4 Nd4 15.cd4 Bb4-+ 16.Rf1 Qf6 17.Be3 Bd6 18.Rb1 b6 19.Rb5 Qg6 20.Bh5 Qf6?? 21.d5?? Qe5 22.g3 a6 23.Rb1 Rad8 24.Re1 Bc5 25.Bc5 bc5 26.Be2 Rd5 27.Qc1 e3 28.f3? Bb1 29.Qb1 Rd2 30.Bd3 Rd8 31.Rd1 R8d3 32.Rd2 Rd2 33.Qb8 Kh7 34.Qb1 g6 35.Qb3 Qa1 36.Qb1 Qb1 0–1. pieeater – ureo, ChessWorld.net, 2005.

4.e3 Bd6–/+ 5.Bd2 Nc6 6.Be2 e4 7.d4 0-0 8.b5 Na5 9.Qa4 c6 10.bc6 Nc6 11.c4 dc4 12.Bc4 Bd7 13.Ne2 Nd4! 14.Qd1 Ne2 15.Qe2 Be5 16.Bb4?? Ba1 17.Bf8 Qf8 18.Bb5 Qb4 19.Kf1 Qb1 20.Qe1 Bb5 (21.Kg1 Qe1) 0–1. LAME WOLF – marekt, internet, 2005.