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TESTH030 Release 2018-04-04
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 e5 2.Bb2 e4 3.e3 Nf6
Helsingborg defence

(...)

4.a3 b5 5.c4 (5.Bb5 a5+=) 5...a6 (5...bc4 6.Bc4 d5 7.Bb3=+) 6.d4 (6.cb5 ab5 7.Bb5 Be7+/–) 6...ed3 (6...a5!?=) 7.Bd3 bc4 8.Bc4 Nc6 9.Ne2 Bb7 10.0–0 d5 11.Bb3 Be7 12.Nbc3 Ne5 13.f4 (better is 13.Nd5!? Bd6 14.f4+–) 13...Neg4 14.Bc1 0–0 15.h3 Nh6 16.Bd5?? (better is 16.g4 Qd7 17.Bc2=) 16...Nd5–+ (16...Bd5?! 17.Nd5 Nd5 18.e4–+) 17.Nd5 Bd6?? (better is 17...Bd5 18.Bb2 Nf5–+) 18.Nec3 Qh4 19.e4 Rfd8 (19...c6 20.Nb6 Rad8 21.Qe1+/–) 20.e5 Bf8 21.Qe2?? (better is 21.Be3!? Qg3 22.Bf2+/–) 21...a5?? (better is 21...Bd5!? 22.Qf2 Qf2 23.Kf2 c5–+) 22.Qf3 (better is 22.Nc7 Rac8 23.N3b5 ab4 24.ab4 Bb4 25.Ra4+=) 22...ab4–/+ 23.Ne2?? Bd5–+ 24.Qe3 ba3 25.Bd2 Qe7 26.Kh1 Nf5 27.Qc3 Be4 28.Bc1 Qc5 29.Qc5 Bc5 30.Nc3 Bd3 31.Rd1 Bd4 32.Bd2?? Bc3 33.Bc3 Be2 34.Rd8 Rd8 35.Ra3 Bc4 36.Ra4 Ng3 37.Kh2 Nf1 38.Kg1 Bb5 39.Rd4 Ra8 40.h4 h6 41.f5 Ra1 42.Rd8+– Kh7 43.Kf2 Rb1 44.Bd4? Nh2 45.Kg3 (45...Rh1 46.Bf2–+). slavisa10 – amaj7, Live Game Caissa's Web, 2004.

4.a3 Nc6 5.b5 Na5 6.d3 (6.Bc3 c6 (6...c5 7.d3 d5 8.Qd2 b6 9.Ba5 ba5=; 6...b6 7.d3 Bb7 8.Ba5 ba5 9.de4 Ne4=) 7.d3 cb5 8.Nd2 ed3 9.Bd3 a6=; 6.c4 a6 7.d3 ab5 8.cb5 d5 9.de4 Ne4=; 6.Bf6 Qf6 7.Nc3 Qe5 8.d4 Qf5 9.Qd2 b6=) 6...a6 (6...d5 7.de4 Ne4 8.Nf3= Bg4 9.Nc3 Nf6=) 7.c4 (7.ba6!? ba6 (7...ed3 8.ab7 Bb7 9.Qd3+= Be7+=) 8.de4 Rb8 9.Ra2 Bb7+=) 7...ab5= 8.cb5 c6 (8...d5 9.de4 Ne4=) 9.Nc3 (9.Nd2 d5=) 9...d5 10.de4 Ne4 11.Ne4 de4 12.Qc2 Qd5 13.Rd1 Qb3 14.Qb3 (better is 14.Qe4!? Be6 15.Rb1+=) 14...Nb3+= 15.bc6 bc6 16.Bc4 Ba3 17.Bg7 Bb4 18.Kf1 Rg8 19.Bb3 Rg7 20.Bc4 Ra4 21.g3 Bg4 22.Rb1 Ba5 23.Be2 Be6 24.Kg2 Ra2 25.h4 Bc7 26.Kf1 Be5 27.Nh3 h6 28.Nf4 Bd7 29.Re1 Ke7 30.Kg2 c5 31.Bc4 Rc2 32.Rc1 Rb2 33.Rhe1 Bg4 34.Kf1 Bf4 (34...Bf3 35.Be2 Be2 36.Re2 Re2 37.Ke2+=) 35.ef4 f5 36.Re3 Kf6 37.Rb3 Rd7?? (better is 37...Rb3 38.Bb3 Rb7+=) 38.Rb2+– 1–0. Borrmann,Fritz – Veghseoe, corr ICCF EU–I–GT–19, 1968.

4.a3 d5 (--> 1.b4 e5 2.Bb2 e4 3.e3 d5 4.a3 Nf6).

4.b5 c5 5.c4 (5.Bf6 Qf6 6.Nc3 Qe6=) 5...d5 6.d3 (6.cd5 Nd5 7.d3 Qa5 8.Nd2 Qb5 9.Rb1=) 6...Be6 (6...dc4!? 7.dc4 Qd1 8.Kd1 Be7+=) 7.Nc3 (7.cd5 Nd5 8.de4 Qa5 9.Nd2 Nc3 10.Bc3 Qc3+=) 7...Be7 (better is 7...dc4!? 8.de4 Qa5=) 8.cd5+/– Bd5 9.de4 Be4 10.Ne4 Qd1 (10...Ne4 11.Qd8 Bd8 12.Bd3+/–) 11.Rd1+/– Ne4 12.Bd3 (12.Bg7 Rg8 13.Bb2+/–) 12...Nd6 (12...Nf6 13.Bf6 Bf6 14.Be4+/–) 13.Nf3 (13.Bg7!? Rg8 14.Be5 Nd7 15.Bh7 Ne5 16.Bg8 Nb5+–) 13...a6 (13...f6 14.a4+=) 14.a4 (better is 14.Bg7!? Rg8 15.Be5 Nb5 16.Rg1+/–) 14...c4 (14...f6 15.b6+=) 15.Be2 (15.Bc2 f6+=) 15...Nd7 (15...ab5 16.ab5 0–0 17.Be5 Nb5 18.Bc4+=) 16.0–0 (16.Ne5 ab5 17.Nd7 Kd7 (17...ba4? 18.Nb6 Ra5 19.Rg1+–) 18.ab5 Ra4+=) 16...f6 (16...ab5 17.ab5 (worse is 17.Bg7 Rg8–/+) 17...Rc8 18.Bg7+=) 17.Nd4 (17.ba6 Ra6 18.Ba3 Rf8+/–) 17...Nb6 (better is 17...ab5 18.ab5 Ne5=) 18.Ne6 (better is 18.a5!? Na4 19.Ba3 ab5 20.Bd6 Bd6 21.Nb5+=) 18...Kf7 19.a5 (19.Nc7 Rac8 20.Nd5 Na4 21.Ba3+=) 19...Na4–+ 20.Ba1? (better is 20.Ba3 Ke6 21.Bd6 Bd6 22.Bc4 Ke7 23.ba6 ba6 24.Rb1–+) 20...Ke6 21.b6 c3 (better is 21...Rac8!? 22.Rc1–+) 22.Rd4 Nb2 23.Bb2 cb2 24.Rb1 (24.Rd2 Rac8 25.Rb2 Rc5–+) 24...Rac8 (24...f5!? 25.g4 Bf6 26.gf5 Nf5 27.Re4 Kd5 28.Rc4–+) 25.Rb2 Rc1 26.Rd1 Rd1 (26...Rc5!? 27.Ra2–+) 27.Bd1 Nc4 (better is 27...Rc8!? 28.Rc2 Rc2 29.Bc2 Nc4–+) 28.Bb3–/+ Kd5 (28...Rc8!?–/+) 29.Rd2+= Kc5 30.Bc4? (better is 30.Rc2 Kb4 31.Bc4+=) 30...Kc4–+ 31.Rd7 Rd8 32.Rc7 Kb5 33.Kf1 Bc5 (better is 33...Re8–+) 34.Rb7 (34.Rg7 Ka5 35.Rb7 Rh8–/+) 34...Ka5 (34...Bf8 35.Rf7–+) 35.Rg7 Kb6 36.Rh7 a5 37.Rh4 Kb5 38.Rf4 (38.Ke2 a4 39.Ra4 Ka4 40.h4–+) 38...Rd6 (better is 38...a4 39.Ra4 Ka4–+) 39.h4 (39.Re4–+) 39...a4 (39...a4 40.Ra4 Ka4–+) 0–1. Trkn – Derek, itsyourturn.com, 2000.

4.b5 Nd5 5.c4 (5.Qg4 Ne7 6.Qe4 d5+=) 5...Nb6 6.a4 (6.Nc3 Qh4+=) 6...d5= 7.c5 (7.cd5 Bf5=) 7...Nc4 (7...Bc5 8.a5 N6d7 9.Bg7+=) 8.Bc4 (8.Bd4 b6 9.cb6 ab6 10.Bc4 dc4=) 8...dc4+= 9.Qc2 Qd3 10.Qc3 Nd7 (10...Bc5 11.Qg7 Rf8 12.Qh7+/–) 11.c6 Nc5 (11...bc6 12.Qd3 ed3 13.bc6–/+) 12.Ba3 (12.Qe5 Be6 13.cb7 Rb8=) 12...Qc3 (12...Nb3!? 13.Qd3 ed3–/+) 13.Nc3= bc6 (better is 13...Nd3!? 14.Ke2 Ba3 15.Ra3 bc6 16.bc6 Bg4 17.f3 ef3 18.Nf3 Ke7=) 14.Bc5+= Bc5 15.Ne4 Bb4 16.Rc1 (16.Rb1 c5 17.Ne2 Bb7+=) 16...cb5= 17.ab5 Be6 18.Ne2 Bd5 19.f3 0–0 20.N2c3 (20.N4c3 Bb7+=) 20...Bc3 (20...c6 21.Rb1 Bc3 22.Nc3=) 21.Nc3+= (worse is 21.Rc3 Rfb8 22.Ke2 Rb5+=) 21...Bb7 (21...Be6+=) 22.0–0 (22.Nd1!?+/–) 22...Rfd8 (22...c6 23.Rc2 Rfb8 24.Ra1+=) 23.Rfd1 (23.Nb1 c6 24.bc6 Bc6=) 23...c6+= 24.bc6 Bc6 25.Na2? (25.Kf1 a5+=) 25...Bb5 (better is 25...Ba4 26.Re1 Rd2–+) 26.Nc3+= Ba6 (26...Be8 27.Kf2+=) 27.Ra1 Bc8 28.Ra4 Be6 29.Kf2 h5 30.Ke2 Bf5 (30...Rd7 31.Nb5=) 31.e4 Be6 32.Rda1 Rd7 33.Nb5 (33.f4!? f5 34.Ra6+=) 33...Rad8+= 34.Rd1 c3 35.Nc3 Bb3 36.Raa1 Bd1 37.Rd1 a5 38.d3 (38.Nd5 a4+=) 38...Rc8 39.Kd2 Rb7 40.Rb1 Rb1 (40...Rb1 41.Nb1 a4–/+) 0–1. Baer,Cy (1895) – Juha,Michael (1820), RSS7E easy–54, 2007.

4.b5 g6 5.a3 (5.d3 Rg8=) 5...d5 6.d4 (6.d3 Bg4 7.Be2 Be2 8.Ne2 Bg7=) 6...Qd7 (6...Bg4!? 7.Be2 Be2 8.Ne2 Qd7+=) 7.c4= c6 (7...a6 8.Qa4=) 8.Nc3 Qc7 (8...Bd6 9.bc6 bc6 10.cd5 cd5 11.Bb5=) 9.c5 (9.bc6 bc6 10.Rc1 Ba6=) 9...Bg7= 10.a4 (10.Qa4 Nbd7=) 10...0–0 11.Be2 (11.Nge2 b6=) 11...Re8 (11...Be6 12.bc6 Nc6 13.Nb5+=) 12.a5 (12.bc6 Nc6 (worse is 12...Qc6 13.Bb5 Qe6 14.Be8 Qe8 15.Nge2+/–; 12...bc6?! 13.Rb1=) 13.Nb5 Qd8=) 12...Nbd7 (12...Be6 13.bc6 Nc6 14.Nb5=) 13.b6 (13.Nh3 Nf8=) 13...Qd8 14.f3 (better is 14.Nh3=) 14...ef3–/+ 15.Nf3 (15.Bf3 Bh6 16.Nge2–/+) 15...Re3 Black gets strong play along the open e–file (15...Ng4!? 16.Qd2 Ne3–+ (16...Re3?! 17.h3 Rf3 18.Bf3 Qh4 19.Kf1+=)) 16.0–0–/+ Nf8 (16...Ne4 17.Ne4 de4 18.Ne5 Ne5 19.de5 Qd1 20.Bd1–+) 17.Na4 (17.Ne5 Bd7=) 17...Bf5 (17...Re7!?+=) 18.a6= Qd7 (18...Qe7 19.Ne5 Ne6 20.Ra2+=) 19.ba7 (19.Ne5!? Qc8 20.Bc1 Re5 21.de5+/–) 19...Ra7= 20.Nb6 (20.Ne5 Qe6 21.Bc1 Ng4 22.Be3 Ne3–+) 20...Qd8 (20...Qe8 21.ab7 Rb7 22.Ra8 Qa8 23.Na8 Rb2 24.Ba6–+) 21.ab7 (21.Ne5 Qe8=) 21...Ra1 (better is 21...Rb7 22.Ne5 Rb6 23.cb6 Qb6+=) 22.Qa1 (better is 22.Ba1 Qb8 23.Ba6+=) 22...Qb8?? (better is 22...Re2 23.Qa8 Re8–/+) 23.Qa8+/– N6d7 24.Ra1?? (better is 24.Rf2+/–) 24...Re2–+ 25.Nd7 Nd7 26.Ne5?? (26.Bc1 Bg4 27.Bf4 Bf3 28.Bb8 Bd4 29.Kf1 Rf2 30.Ke1 Re2 31.Kf1 Rf2 32.Ke1 Re2 33.Kf1=) 26...Be5–+ (26...Rb2?? 27.Nd7 Bd4 28.Kh1 Bd7 29.Qb8 Kg7 30.Rd1+–) 27.de5 Rb2 28.Qb8 Nb8 (28...Nb8 29.Ra7 Kg7–+) 0–1. mtr – basketcase, Caissa's Web, 2001.

4.b5 h5 5.Bf6 Qf6 6.Nc3 Qe6 7.Nge2 h4 8.Nd4 Qd6 (better is 8...Qg6=) 9.Qg4+/– Qe7 10.Qf4 d6 11.Nd5 Qd8 12.Qe4 Be7 13.Bc4 Be6?? (better is 13...Rh6+–) 14.Ne7 Qe7 (14...Nd7 15.Be6 Qe7 16.Bd7 Kd7 17.Qb7+–) 15.Ne6 c6 (15...fe6 16.Qb7 d5 17.Qa8+–) 16.Nc7 Kd8 17.Qe7 Ke7 18.Na8 c5 (18...Rc8 19.Rb1 Nd7 20.bc6 bc6 21.Rb7 Ra8 22.Bf7+–) 19.Bd5 b6 20.a4 Nd7 21.a5 ba5 (21...Kf6 22.ab6 Nb6 23.Nb6 ab6 24.Ra7+–) 22.Ra5 Nb6 23.Ra7 Kf6 1–0. Trkn – guest4232, ICC, 2004.

4.c3 d5 5.Na3 a6 6.Nc2 Be6 7.f3 ef3 8.Nf3 Bd6 9.h4 Nc6 10.h5 h6 11.Kf2 Be7 12.Ncd4 Nd4 13.Nd4 Ne4 14.Kg1 Bf6 15.c4 Qd6 16.c5 Qd7 17.Bd3 Bg4 18.Qe1 Ng5 19.Rc1 0–0 20.c6 bc6 21.Rc6 Rae8 22.Ra6 Ne4 23.Be4 Re4 24.Qf2 Bd4 25.Bd4 Qb5 26.Ra5 Qb4 27.Rd5 Qb1 28.Kh2 Qc2 29.Ra1 Be6 30.Rc5 Qd3 31.Rc7 Qb5 32.a4 Qh5 33.Kg1 Rh4 34.Qf3 Rh1 35.Kf2 Qh4 36.Qg3 Qg3 37.Kg3 Ra1 38.Ba1 Ra8 39.Bc3 Ra4 40.Rb7 Rg4 41.Kf2 h5 42.g3 h4 43.gh4 Rh4 44.Kg3 Rg4 0–1. swislina – newsunate, internet, 2013.

4.Nc3 d5 5.b5 (--> 4.b5 d5 5.Nc3).

4.Bc4? d5 5.Bb3 Bg4?? (5...Bb4 6.Ne2–+) 6.Ne2?? (better is 6.Bf6 Qf6 7.Qg4 Qa1 8.Qc8 Ke7 9.Qb7 Qb1 10.Ke2+/–) 6...Bb4–/+ 7.0–0 0–0 8.a3 Bd6 9.c4 c6 10.cd5 cd5 11.Re1 Be6 12.Nd4 Nbd7 13.Ne6 fe6 14.d3 Qb6 15.Nd2 Qb3 1–0. Neumann,Frank – Kondercov,Ivan, OP–2011–0–01872, 2011.

4.d3 Bb4 5.c3 Ba5 6.de4 Ne4?? 7.Bd3?? Qh4–/+ 8.Qf3 Ng5 9.Qd5=+ Nc6 10.Nf3 a6?? 11.Nh4+– (11.Nh4 Ne6 12.Nf3+–; 11.Qg5?! Qg5 12.Ng5 Ne5+–) 1–0. coloplayah (2035) – jcekota (2190), net–chess.com, 2005.

4.d3 d5 5.a3 (--> 1.b4 e5 2.Bb2 e4 3.e3 d5 4.a3 Nf6 5.d3).

4.d4 Bb4 5.c3 Be7 6.Bc4 d5 7.Be2 c5 8.dc5 Bc5 9.Nd2 0–0 10.Nb3 Be7 11.Qc2 Be6 12.Nd4 Bd7 13.0–0–0 a6 14.f3 Nc6 15.h3 Nd4 16.ed4 Qa5 17.Qb1 Rac8 18.Qa1 b5 19.a3 Rc7 20.Kb1 Ra8 21.Rc1 Rac8 22.Bf1 Qb6 23.Ne2 a5 24.Ng3 b4 25.cb4 ab4 26.ab4 Rc1 27.Bc1 Qb4 28.Qb2 Qb2 29.Bb2 Rb8 30.Ka2 ef3 31.gf3 Ra8 32.Kb1 Rb8 33.Ka2 Bd6 34.Ne2 Bb5 35.Nc3 Bc4 36.Bc4–/+ dc4 37.Ne4 Ne4 38.fe4 Ra8 39.Kb1 Rb8 40.Kc2 Bb4 41.Rh2 Rc8 42.Bc3 Bd6 43.e5= Be7 44.d5 Bc5 45.Rg2 Ra8 46.d6 Ra2 47.Bb2 Bd4? 48.Kb1+– Rb2?? 49.Rb2 Be5 50.Rb8# 1–0. mic (2120) – macedon (2060), net–chess.com, 2007.

4.Be2 Bb4 5.a3 Ba5 6.f3 ef3 7.Nf3 0–0 8.0–0 Bb6 9.d3 a5 10.Kh1 Be3 11.Bf6 Qf6 12.Nbd2 d5 13.c4 d4 14.Ne4 Qe7 15.Nfd2 f5 16.Nc5 Qc5 17.Bf3 c6 18.Rb1 Nd7 19.Qe2 Ne5 20.Nb3 Qa3 21.Nd2 Nf3 22.Nf3 f4 23.Ne5 Bf5 24.Qh5 g6 25.Qg5 Rae8 26.g4 Re5 27.gf5 Ref5 28.Qg2 Qd3 29.Rbd1 Qc4 30.Rde1 Qd5 31.Qd5 cd5 32.Kg2 f3 33.Kg3 f2 34.Re2 Rf4 35.Kh3 Rf3 36.Kg2 R8f6 37.h3 R6f5 38.Kh2 Rg5 39.Kh1 Rh3 0–1. blaugrana18 – alfil77, internet, 2013.

4.f3 Bb4 5.Bf6 Qf6 6.c3 Bd6 7.fe4 Qh4 8.g3 Bg3 9.hg3 Qh1 10.Ne2 Qe4 11.c4 d6 12.Nbc3 Qg4 13.Nd5 Na6 14.Qa4 Bd7 15.Qb3 Bc6 16.Ndc3 Nc5 17.Qc2 Qc4 18.Nd4 Qb4 19.Rb1 Qa5 20.Nc6 bc6 21.Qf5 0–0 22.Bd3 g6 23.Qg5 Ne6 24.Qa5 c5 25.Nd5 Rfc8 26.Ne7 Kg7 27.Nc8 Rc8 28.Qa7 c6 29.a4 Nd8 30.a5 d5 31.Qa6 c4 32.Qc8 Ne6 33.a6 cd3 34.a7 c5 35.a8Q c4 36.Qg8 Kf6 37.Qh7 Ke5 38.Qah8 Kd6 39.Qf7 c3 40.Rb6 Kc5 41.dc3 Kb6 42.Qe6 Kc5 43.Qhc8 Kb5 44.Qd5 Ka4 45.Qcc4 Ka3 46.Qdc5 Kb2 47.Qd3 Kc1 48.Qa3 1–0. arti000 – dragonne66, internet, 2013.

4.f3 d5 5.d3 Nc6 6.b5 Ne7 7.Bf6 gf6 8.de4 de4 9.Qd8 Kd8 10.fe4 Be6 11.Nf3 Kc8 12.Nc3 b6 13.e5 fe5 14.Ne5 Kb7 15.Be2 Rd8 16.Bf3 Kb8 17.a4 f6 18.Ng4 f5 19.Ne5 Bg7 20.0–0 Be5 21.Ra3 Bc3 22.Rc3 Rd7 23.Ra3 Rhd8 24.a5 Rd2 25.ab6 cb6 26.c3 Bd5 27.Bd5 R8d5 28.c4 R5d3 29.Rf5 Nf5 30.Rd3 Rd3 0–1. arti000 – 2p3b, internet, 2013.

4.g3 g6 5.a3 Bg7 6.Bc4 (6.d3!?=) 6...0–0 7.Nc3 d5 8.Ba2 c6 9.Nge2 Bh3 10.Nf4 Qd7 (10...Bg4!? 11.Nce2 Nbd7–+) 11.Nh3 Qh3 12.Qe2 Nbd7 13.d4 ed3 14.cd3 d4 15.Ne4 (15.Nd1 Nd5=+) 15...de3 16.Nf6 Nf6 17.fe3 Nh5 (17...Ng4 18.Bg7 Kg7 19.e4=+) 18.0–0–0 (18.Rf1 Rae8 19.e4 Bb2 20.Qb2 Qd7=) 18...b6 (18...a5 19.ba5 Bb2 20.Qb2 Ra5 21.Qb4=+) 19.d4 Qc8 20.g4 Nf6 21.h3 Nd5 22.g5 Re8 23.Qc4?? Re3 24.h4 Rh3 25.Rh3 Qh3 26.Qc6? Rc8–+ 27.Qc8 Qc8 28.Kb1 Qf5 29.Ka1 Ne3 30.Rc1 Nc2 31.Rc2 Qc2 32.d5 Bb2 (32...Qb2?!=) 0–1. audrey – JimWa, Live Game Caissa's Web, 2004.

4.h3 Bb4 5.Ne2 0–0 6.Nf4 d5 7.Be2 c5 8.g4 d4 9.ed4 cd4 10.a3 Ba5 11.0–0 Qd6 12.Ng2 Bc7 13.f4 ef3 14.Bf3 Qh2 15.Kf2 Re8 16.Rh1 Bg3 17.Kf1 Qh1 0–1. aleksandras19 – mbobo, internet, 2013.

4.a3 c5

5.bc5 Bc5 6.Bc4 d5 7.Bb5 Bd7 8.c4 Bb5 9.cb5 0–0 10.Ne2 Qd7 11.Bf6 gf6 12.a4 Qg4 13.Ng3 Qg6 14.Nc3 d4 15.Nce4 de3 16.Nc5 ef2 17.Kf1 Rc8 18.d4 b6 19.Nce4 f5 20.Nf2 f4 21.Nh5 Qf5 22.Qg4 Qg4 23.Ng4 Rc4 24.Nf4 Rd4 25.g3 Nd7 26.Kg2 Nc5 27.Rhe1 Na4 28.Re5 Nc3 29.Kh3 Rb4 30.Nh5 Nb5 31.Ngf6 Kh8 32.Rae1 Nc7 33.Re7 1–0. orangutandu – max5000, internet, 2013.

5.bc5 Bc5 6.d4 Be7 7.Bc4 d5=+ 8.Bb3 Nbd7 9.c4 Nb6 10.cd5 Nbd5=+ 11.Ne2 Bg4 12.Nbc3 0–0 13.0–0 Rc8 14.Bd5= Nd5 15.Nd5 Qd5=+ 16.Nf4 Qd7 17.Qb3 Be6 18.Ne6= Qe6 19.Qe6 fe6 20.Rfc1 Bd6 21.h3 Kf7 22.Kf1 Ke7 23.Ke2 Kd7 24.Rc8 Rc8= 25.Rc1 Rc1 26.Bc1 Kc6 27.f3 ef3 28.Kf3 Kd5=+ 29.g4 b5 30.Bd2? Ba3–+ 0–1. wlittle (2300) – pops (2215), net–chess.com, 2004.

4.a3 c6

5.c4 a5 6.b5 cb5 7.cb5 d5 8.Ne2 Bd6 9.d3 0–0 10.de4 de4 11.Nd2 Bg4 (11...Nbd7 12.Ng3 Bg3 13.hg3+=) 12.h3 (12.Bf6 Qf6 13.Ne4 Qe5 14.Nd6 Rd8+–) 12...Bh5? (12...Bf5 13.Nc4 Be7 14.Ng3+=) 13.Qc2 (better is 13.Bf6 Qf6 14.Ne4+–) 13...Bg6 14.Nc3 Can e4 get defended? 14...Qe7 15.Bc4 (15.Nc4!?=) 15...Nbd7+= 16.Nd5 Nd5 17.Bd5 Rac8 18.Qd1 Ne5 (18...Nb6 19.Bb3–/+) 19.0–0 (19.Be4!? Nd3 20.Bd3 Bd3 21.Qg4+=) 19...Nd3+= 20.Bd4 Ba3 (20...Bb8 21.Bb3+=) 21.Qg4 (better is 21.Ne4!? Rfd8 22.Bf7 Qf7 23.Qd3+=) 21...Bb4 (21...Rcd8 22.Be4 f5=) 22.Ne4? (22.Be4 f5 23.Bd5 Kh8 24.Qd1=) 22...Ne5?? (better is 22...Rcd8 23.Qf3 Ne5 24.Be5 Rd5 (24...Qe5?! 25.Bb7 Qb5 26.Ng3+=) 25.Nf6 gf6 26.Qd5 fe5–+) 23.Qg3 (23.Qg5 Rfe8 24.Qe7 Re7 25.Rfd1=) 23...Be4 (23...Rfd8 24.Rfc1 Rc1 25.Rc1 h6+= (25...Rd5?? 26.Rc8 Qf8 27.Rf8 Kf8 28.Be5+–)) 24.Be5 (24.Be4 Ng6 25.Qf3 Nh4+/–) 24...Bg6+= 25.f4 Rcd8 0–1. GuestYYLH – proshare, freechess.org, 2017.

5.c4 a6 6.d3 d5 7.Nd2 Bf5 8.de4 de4 9.Ne2 Be7 10.Ng3 Bg6 11.Rc1 0–0 12.Be2 a5 13.b5 Qb6 14.a4 Bb4 15.0–0 Bd2 16.Qd2 Rd8 17.Qc3 Nbd7 18.Rfd1 Kh8 19.Rd2 Rg8 20.Rcd1 Rad8 21.Qc2 c5 22.Rd6 Qc7 23.Qd2 h5 24.Bf6 gf6 25.Rd7 Qb8 26.Rd8 Rd8 27.Qd8 Qd8 28.Rd8 1–0. ourang – jojov0287, internet, 2013.

5.h3 d5 6.c4 Bd6 7.cd5 cd5 8.Bb5 Bd7 9.Bd7 Qd7 10.Ne2 0–0 11.Nd4 Nc6 12.Nc6 Qc6 13.Bf6 gf6 14.Nc3 Be5 15.Rc1 Rac8 16.0–0 Kh8 17.Qg4 Qe6 18.Qe2 Rg8 19.g4 f5 20.f3 Qh6 21.Qg2 Qh4 22.Nd5 Rc1 23.Rc1 h5 24.Ne7 Rg7 25.Nf5 Rg6 26.Nh4 hg4 27.Ng6 1–0. aleksandras19 – balga92, internet, 2013.

4.b5 Be7

5.c4 0–0 6.Qc2 d5 7.c5 a5 8.a4 b6 9.c6 Be6 10.Nc3 Bb4 11.Be2 Qd6 12.f3 d4 13.Ne4 Ne4 14.Qe4 Bc5 15.Bd3 f5 16.Qh4 de3 17.Ke2 ed2 18.Qg3 Qg3 19.hg3 Bb4 20.g4 fg4 21.Bh7 Kf7 22.Be4 Rd8 23.Rh7 Bc4 24.Kf2 Bc5 25.Kg3 d1Q 26.Rg7 Kf8 27.Rd1 Rd1 28.Rc7 Rg1 29.Rc8 Kf7 30.c7 Bd6 31.Kg4 Rg2 32.Kf5 Be6 0–1. jura1946 – schahograi, internet, 2013.

5.c4 0–0 6.Nc3 c6 7.Be2 d5 8.a4 a6 9.d4 ed3 10.Bd3 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 cb5 14.Bb5 Qa5 15.Nge2 Rd8 16.Qc2?? Qa1–+ 17.Nc1 Bb4 18.0–0 Qc3 19.Qa2 Be6 20.Qa4 Bd6 21.Ne2 Qe5 22.Nf4 Bc8 23.g3 Bd7 24.Nd3 Bb5 25.Ne5 Ba4 26.Nd3 Bb5 27.Rd1 Be7 28.Rb1 Bd3 29.Rb7 Nc6 30.Rc7 Be4 31.Kf1 Bd6 32.Rb7 Ra8 33.Rb2 Bd3 34.Kg2 h6 35.f4 g5 36.h4 gf4 37.gf4 Be4 38.Kg3 Bc5 39.Rb3 Nd5 40.Rb7 Be3 41.Rd7 Bf4 42.Kf2 Ra2 43.Ke1 Nd4 44.Rd8 Kg7 45.Rd5 Bd5 46.Kd1 Bg3 47.Kc1 Be4 48.h5 Bf4 49.Kd1 (49.Kd1 Ra1) 0–1. OPA – karvapawnov, Live Game Caissa's Web, 2004.

5.c4 0–0 6.Nc3 d6 7.Be2 Bf5 8.f3 Bg6 9.d4 ed3 10.Bd3 Nbd7 11.e4 c6 12.a4 Ne5 13.Nge2 Qb6 14.a5 Qe3 15.Bc2 Nc4 16.Bc1 Qc5 17.bc6 bc6 18.Na4 Qb4 19.Bd2 Nd2 20.Qd2 Qd2 21.Kd2 Nd7 22.h4 d5 23.Nf4 de4 24.Ng6 hg6 25.Be4 Rac8 26.Rac1 Rfd8 27.Ke2 c5 28.h5 Nf6 29.hg6 Ne4 30.gf7 Kf7 31.fe4 c4 32.Rcf1 Kg6 33.Rh3 Bf6 34.Rg3 Kh7 35.Rh1 Kg8 36.Rh6 Kf7 37.Rhh3 Rd4 38.Re3 Re8 39.Rhf3 Rde4 40.Nc5 Re3 41.Re3 Re3 42.Ke3 c3 43.Kd3 Kg6 44.a6 Kf5 0–1. elektrooon – komanc, internet, 2013.

5.c4 d5 (---> 4.b5 d5 5.c4 Be7).

5.f4 0–0 6.Ne2 d5 7.Ng3 c5 (7...a6 8.ba6 Na6 9.Be2+=) 8.Be2 a6 9.a4 d4 10.0–0 ab5 11.ed4? (11.ab5 Ra1 12.Ba1 Qa5+=) 11...cd4 (11...ba4 12.Bb5–+) 12.ab5 (12.Bb5 Bc5+=) 12...Ra1 13.Ba1 Bc5 (13...d3 14.cd3 ed3 15.Bf3 Qb6 16.Kh1 Qb5 17.Re1–/+) 14.Kh1 Nbd7 15.Bb2 Nb6 16.Na3 (16.Ba3 Qe7 17.Bc5 Qc5–/+) 16...Qe7 (16...Re8 17.f5–/+) 17.Qa1 (17.Nc4 Nc4 18.Bc4 Bg4+=) 17...Rd8–/+ 18.Nh5 (better is 18.f5!?–/+) 18...Nh5–+ 19.Bh5 f5 (19...Bd7 20.Bd4 Bd4 21.Qd4 Bb5 22.Qb6 Bf1 23.Qe3–+) 20.Be2 Be6 21.Qc1 Ra8 22.c3 (22.Nb1 Ra2 23.c3–+) 22...d3 (22...Ra3?! 23.cd4 Bd6 24.Ba3 Ba3 25.Qc3–+) 23.Bd1 (23.Bh5 Ba3 24.Ba3 Qa3 25.Qe1–+) 23...Bc4 (23...Ba3 24.Ba3 Qa3 25.Qb1–+) 24.Re1?? (better is 24.Nc4 Nc4 25.Bb3–/+) 24...Nd5 Black plans e3 (24...Ba3 25.Rg1–+) 25.g3?? (better is 25.Nc4 Nf4 26.Bb3+/–) 25...e3 (25...Ba3!? 26.Qa1–+) 26.de3 (26.Bf3 Ba3 27.Qa1–+) 26...Qe4 0–1. Stabenow,Juergen – Krug, corr, 1980.

4.c4 Bb4–/+

5.Qb3 Bc5 6.d4 ed3 7.Bd3 0–0 8.Nf3 d6 9.Nbd2 Nc6 10.0–0 Be6 11.Qc2 Nb4 12.Qb1 Nd3 13.Qd3 a5 14.Ne4 Ne4 15.Qe4 h6 16.Rac1 a4 17.Rfd1 Qc8 18.Nd4 a3 19.Ba1 Ra4 20.Ne6 Qe6 21.Qb7 Rc4 22.Rc4 Qc4 23.Qd5 Qd5 24.Rd5 Rb8 25.Rd1 Rb4 26.g3 Rc4 27.Kg2 Rc2 28.Bd4 Ra2 29.Bc5 dc5 30.Rc1 Rb2 31.Rc5 a2 32.Ra5 c5 33.Kf3 c4 34.Ke4 c3 35.Kd3 c2 36.Kd2 Rb1 37.Kc2 a1Q 0–1. emeryt85 – komanc, internet, 2013.

5.Be2 0–0 6.f3 ef3 7.Nf3–/+ d5 8.cd5 Nd5 9.0–0 Nc6 10.a3 Bc5 11.Nc3 Nc3 12.Bc3 Bg4 13.Rb1 b6 14.Ne5 Be2–/+ 15.Qe2 Ne5 16.Be5 Qe7 17.d4 Ba3 18.Qf3 Rac8 19.e4 Bd6–+ 20.Bd6 Qd6 21.Rbd1 Qg6 22.d5 Rfe8 23.Rde1 Rcd8 24.Re3 f6 25.Qf4 a5 26.Qc7=+ Rd5?? 27.ed5 Re3 28.d6 Re2 29.Qc4 (29.Qc4 Qf7 30.Qe2+–) 1–0. vhilts (2260) – blinddog (2225), net–chess.com, 2010.

4.Bc4? Bb4

5.Ne2 0–0 6.Bf6 Qf6 (worse is 6...gf6 7.Nec3 (7.Nf4 c6 8.c3 Be7 9.d3 d5 10.Bb3 Bd6+=; 7.c3 Be7 8.Bd5 f5 9.Nd4 d6 10.Qh5 c6+=; 7.a3 Be7 8.f3+= d5 9.Bb3 f5 10.0–0 c6–/+) 7...c6 8.Qg4 Kh8 9.Qe4 d5 10.Bd5 Bc3+=) 7.Nbc3 c6 (7...Bc3 8.Nc3 Qg6 9.0–0–/+ c6 10.f3 d5–/+) 8.Ne4 Qe7 (8...Qe5 9.N4g3 d5 10.Bd3 Re8+=) 9.N4c3 (9.Bd3 d5 10.N4g3 Nd7+=) 9...d5 10.Bd3 (10.Bb3 Re8–/+) 10...Bd6 (10...Nd7–/+) 11.Nd4 Nd7 (11...Qg5 12.Nf3 Qf6 13.0–0–/+) 12.Nf5 Qe6 13.Nd6 Qd6 14.0–0 Ne5 15.Qe2 (15.Be2 Qg6=) 15...Nd3 (15...Qf6 16.Rab1+=) 16.Qd3= Qf6 17.e4 de4 18.Ne4 Qh6 (18...Qg6 19.Rfe1=) 19.Rab1 b6 20.Rbe1 c5 (20...Bf5 21.Qc3+=) 21.Re3= Bf5 22.Qc3 Rfe8 23.Rfe1 Be6 24.Qe5 Ba2 (better is 24...Bd7!? 25.Qc7 Qc6=) 25.Nf6!+/– gf6 (25...gf6 26.Qg3 Double attack; 25...Qf6 26.Qe8 Mate attack) 26.Qg3 Kf8 (26...Qg5!? 27.Re8 Re8 28.Re8 Kg7 29.Ra8 Qg3 30.fg3+–) 27.Qd6 Kg8?? (better is 27...Kg7 28.Re8 Re8 29.Re8 Be6+–) 28.Re8 Re8 29.Re8 Kg7 30.Re3 Be6 (30...Qg6 31.Rg3 Bb1 32.Rg6 hg6 33.Qd3+–) 31.Rg3 (31.Rg3 Qg5 32.Rg5 fg5 33.Qe7+–) 1–0. Janek – Vesely, internet, 2016.

5.Ne2 d5 6.Bb3 c6 7.a3 Ba5 8.Nbc3 0–0 9.Ng3 Bg4 10.f3 ef3 11.gf3 Bh3 12.Qe2 Qd6 13.0–0–0 Bc3 14.dc3–/+ a5 15.Rhg1 a4 16.Ba2 b5 17.e4? Re8 18.Qf2 Qf4–+ 19.Kb1 de4 20.c4 Ng4?? 21.Qd4+/– f6 22.fg4 Bg4? 23.Rdf1 Bf3 24.Nh5!! Qe5 25.Rg7 Kf8 26.Qe5 fe5 27.cb5 cb5 28.Rh7 Nc6 29.Ng3 Rad8 30.Ne4 Rd1 31.Rd1 Be4 (31...Be4 32.Rf1 Bf3 33.Rf3#; 31...Re6 32.Be6 Be4 33.Rf7 Ke8 34.Rg1 Ne7 35.Rgg7 Bd3 36.Re7 Kd8 37.Rd7 Ke8 38.Rg8#) 1–0. carrafurca (2160) – mkopple (2160), net–chess.com, 2008.

4.g3 Bb4

5.Bg2 0–0 6.Ne2 Nc6 7.0–0 d5 8.c3 Bd6 9.d4 Bg4 10.Qc2 h6 11.Nf4 Nh7 (better is 11...Re8–+) 12.Nd5= Bg3?? (better is 12...f5=) 13.fg3+– Qd5 14.Be4 Qh5 15.Bh7 Kh8 16.Bd3 Bh3 17.Rf5 (better is 17.Rf4 Be6 18.e4+–) 17...Bf5 18.Bf5 Rae8 19.e4 Ne7 20.Nd2?? (20.Bd7 Rd8 21.Ba4 b5+–) 20...Qg5?? (better is 20...Nf5 21.Qd1 Qd1 22.Rd1 Ne7–/+) 21.Nf3 Qe3 22.Qf2 Qd3 23.Ne5 Qb5 (23...Qa6+–) 24.Bd7 Rd8 (24...Nc6 25.Nf7 Kg8+–) 25.Bb5 1–0. stoker – karvapawnov, Live Game Caissa's Web, 2004.

5.Bg2 d5 6.c3 Ba5 7.Ne2 c5 8.0–0 Nc6 9.h3 0–0 10.d4 c4 11.Na3 Bc7 12.Nb5 Bb8 13.Nf4 a6 14.Na3 Bf4 15.ef4 Bd7 16.Nc2 h5 17.Ne3 Qc8 18.Kh2 Re8 19.Bc1 b5 20.a3 Na5 21.Rb1 Nb3 22.Bd2 Be6 23.Be1 g6 24.Nc2 a5 25.f3 ef3 26.Rf3 Bf5 27.Rf2 Ne4 28.Be4? Re4–+ 29.h4 Qd7 30.Qf3 Rae8 31.Rd1 Bg4 (31...Bg4 32.Qe4 de4–+) 0–1. mic (2210) – kode (2315), net–chess.com, 2008.

5.Bg2 d5 6.Ne2 Be6 7.Nf4 Nbd7 8.Ne6 fe6 9.0–0 Qe7 10.d3 Rd8 11.c4 dc4 12.dc4 Ne5 13.Qb3 Rd3 14.Qa4 c6 15.Be5 0–0 16.Qa7 Ng4 17.Bb2 Bc5 18.Qa4 h5 19.Be4 Rd4 20.ed4 Bd6 21.Bg6 h4 22.Ba3 hg3 23.fg3 Rf1 24.Kf1 Ba3 25.Qa3 Qf6 26.Kg2 Qg6 27.Qf3 Qc2 28.Kh3 Nf2 29.Kh4 Qh7 30.Qh5 Qe4 31.g4 g6 32.Qg5 Qd3 33.Qd8 Kf7 34.Qd7 Kf6 35.Qd8 Kg7 36.Qe7 Kh8 37.Qf6 Kg8 38.Qf2 g5 39.Kg5 Qh7 40.Qf6 Qd7 41.Nd2 b5 42.Rf1 Qd6 43.Qf7 Kh8 44.Qf8 Qf8 45.Rf8 1–0. rryy44 – josemanuel1, internet, 2014.

4.a3 a5

5.ba5 Ra5 6.d3 Nc6 7.de4 Ne4 8.Be2 Qh4 9.g3 Qh6 10.Nf3 Rf5 11.0–0! Bd6 12.Bd3 Ng3 13.Bf5 Nf5 14.Nbd2 Nh4 15.Kh1 Nf3 16.Nf3 0–0! 17.Rg1 f6 18.Rg2 b6 19.Qd5 Kh8 20.Rag1 Rg8 21.Qe4 Bb7 22.Qg4 Ne5 23.Be5 Be5 24.Ne5 fe5 25.e4 d5 26.f3 de4 27.fe4 c5 28.Qe2 Qf4 0–1. sunnyda – mbogdan29, internet, 2014.

5.b5 a4 6.Ne2 d5 7.Nd4 Nbd7 8.c4 Nc5 9.Nc3 dc4 10.Bc4 Bd6 11.0–0 0–0 12.Nce2 Bg4 13.h3 Bd7 14.Qc2 Qe7 15.Ng3 h5 16.Ngf5 Bf5 17.Nf5 Qd7 18.Nd6 Qd6 19.Be2 b6 20.Rfd1 Rad8 21.Bc3 Nb3 22.Rab1 Rfe8 23.Bc4 Qc5 24.Bb3 ab3 25.Qb3 Rd3 26.Qb4 Qf5 27.Bd4 Nd5 28.Qc4 Re6 29.Rb3 Rb3 30.Qb3 Rg6 31.Kf1 Qg5 32.g3 Qf5 33.Kg2 Qf3 34.Kg1 Ne7 35.Qc4 Nf5 36.Qf1 Ng3 37.fg3 Rg3 38.Kh2 Rh3 39.Qh3 Qd1 40.Qc8 Kh7 41.Qc7 Qe2 42.Kg3 Qf3 43.Kh2 f6 44.Qf4 Qe2 0–1. elsh1403 – jerry5 (1710), internet, 2014.

5.b5 Be7 6.c4 (6.d3 0–0=) 6...c6 (6...0–0 7.d3=) 7.d3 d5 (7...0–0 8.de4 Ne4 9.Nd2=) 8.cd5 cd5 9.Nc3 (9.de4 de4 10.Qd8 Bd8=) 9...Nbd7 (9...0–0 10.Rc1=) 10.Na4 (10.de4 de4 (worse is 10...Ne4 11.Nd5 0–0 12.Bg7 Nf2 13.Kf2 Kg7 14.Qg4 Kh8 15.Qd4 Nf6 16.Nb6+/–) 11.Qc2 Nc5=) 10...b6 (10...Rb8 11.de4 de4 12.Nc3+=) 11.Ne2 (11.Rc1 0–0=) 11...Bb7 (11...0–0 12.Rc1=) 12.Nd4 Rc8 13.Be2 0–0 14.Nf5 Re8 (14...Ne8 15.de4 de4 16.Bg4+/–) 15.de4+= de4 16.0–0 (worse is 16.Ne7 Qe7 (worse is 16...Re7 17.Bf6 gf6 18.Qd6+=) 17.0–0 Qe6=) 16...Qc7 (16...Kf8 17.Bg4 Rc7 18.Ne7 Qe7 19.Bd7 Nd7 20.Qd4+/–) 17.Ne7 Re7 18.Rc1 Nc5 (18...Qb8 19.Bf6 Rc1 20.Qc1 gf6 21.Qd2+/–) 19.Nc5 bc5 20.Bf6 gf6 21.Bc4 Kh8 22.Qh5 Rg8 (22...Qe5 23.Qe5 fe5 24.Rfd1+/–) 23.Rfd1 Rg5 (23...Rg6 24.Qh4+/–) 24.Qh4 (24.Qh6 Rg6 25.Qh4 a4+/–) 24...Kg7 25.Qf4 Ree5 (25...Qf4 26.ef4 Rf5 27.g3+/–) 26.h4 (26.Rb1 Qe7+–) 26...Rg6+/– 27.b6 (27.h5 Rgg5+/–) 27...Qc8 28.Rd6 Rf5 (28...Rh5 29.Rcd1 Qh3 30.Qf6 Rf6 31.gh3+/–) 29.Qh2 Re5 30.h5 Rh6 31.Be2 Qb8 (31...Bd5 32.Rf6! Rhh5 33.Bh5 Kf6 34.Qf4 Qf5 35.Bg4 Qf4 36.ef4+–) 32.Rcd1 (better is 32.Rd2 Qc8 33.Qf4+/–) 32...Bc8?? (better is 32...Rg5+/–) 33.Rd8 (33.R6d5 Ba6 34.Qg3 Rg6 35.hg6 hg6 36.Ba6 Rd5 37.Qb8 Rd1 38.Bf1 Rf1 39.Kf1 c4+–) 33...Reh5 34.Bh5 (34.Qb8?? Rh1) 34...Qh2 35.Kh2 Rh5 36.Kg1 Bb7 37.R1d7 Bc6 38.Rc7 Rd5 39.Rd5 (39.Rc6?! Rd8 40.Rc5 Rd1 41.Kh2 Rb1+=) 39...Bd5 40.b7 Bb7 41.Rb7 (41.Rb7 c4 42.Rc7+–) 1–0. Mehlhorn,Uwe – Rossbach,W, BFO–071, 2000.

5.c3 d5 6.b5 Be7 7.a4 0–0 8.g3 c6 9.bc6 Nc6 10.Bg2 Bg4 11.Qc1 Ne5 0–1. diablo005 – szamciu300, internet, 2013.

5.b5 Bc5

6.c4 0–0 7.d3 d5 8.de4 de4= 9.Qc2 Be6 10.Ne2 Nbd7 11.Nf4 Bf5 12.Be2 Ne5?? 13.0–0?? g5? 14.Nd5 Nd5+= 15.cd5 Qd5 16.Rd1 Qe6?? 17.Qc5+– Nd3 18.Bd3 ed3 19.Qc7 Rac8 20.Qb7 Rc2 21.Bd4?? Rfc8?? 22.a4 Rc1?? 23.Nd2+– R1c2 24.Qb6 Qd5 25.Qh6 f6 26.Bf6 Qf7 27.Qg5 Bg6 28.Bd4 Kf8 29.h4 Rd8 30.Qd8 (30.Qd8 Qe8 31.Qa5+–) 1–0. uno (1830) – kiraly (1820), ICC, 2003.

6.c4 d6 7.Nc3 Nbd7 8.Qc2 Qe7 9.Nd5 Nd5 10.cd5 0–0 11.Qc3 Nf6 12.Ne2 a4 13.Nf4 Bg4 14.Be2 Be2 15.Ne2 Qd7 16.0–0 Qb5 17.Nd4 Qd3 18.Qd3 ed3 19.Nf5 Nd5 20.Ng7 f6 21.Ne6 Rf7 22.e4 Nb6 23.Rac1 Re8 24.Nc5 dc5 25.f3 c4 26.Bd4 Rd8 27.Bb6 cb6 28.Rc4 b5 29.Rb4 Rc7 30.Rb5 Rc2 31.Rd1 Rd7 32.Rb4 Ra2 33.Ra4 Kf7 34.Kf2 f5 35.ef5 Kf6 36.Ke3 Kf5 37.g4 Kg5 38.Rb1 Re7 39.Kd3 Rd7 40.Ke3 Rad2 41.Rab4 R2d3 42.Ke4 Ra3 43.Rb7 Ra4 44.R7b4 Re7 45.Kd3 Ra3 46.R1b3 Rb3 47.Rb3 Kf4 48.Kd4 h5 49.gh5 Rh7 50.Rb5 1–0. elsh1403 – jerry5 (1685), internet, 2014.

5.b5 c6

6.c4 cb5 7.cb5 Be7 8.Ne2 0–0 9.Nd4 d5 10.Be2 Nbd7 11.0–0 Nc5 12.a4 Bd7 13.Nc3 b6 14.f3 ef3 15.Bf3 Nce4 16.Ne4 de4 17.Be2 Bc5 18.Bc4 Bg4 19.Qb3 Qc7 20.Nc6 Be6 21.Bf6 Bc4 22.Qc4 gf6 23.Qe4 Rae8 24.Qg4 Kh8 25.Rf6 Rg8 26.Qf5 Rg6 27.Rf7 Qd6 28.Rd1 Be3 29.Kh1 Qd3 30.Qd3 1–0. elsh1403 – noexpert, internet, 2013.

6.c4 d5 7.Qb3 Bd6 8.Nc3 0–0 9.cd5 cd5 10.Nd5 Nd5 11.Qd5 Be6 12.Qb7 Nd7 13.Qe4 Nc5 14.Qf3 Rc8 15.Nh3 Nb3 16.Rd1 Rc2 17.Bc3 Ba3 18.Nf4 Bb4 19.Bd3 Rc3 20.dc3 Bc3 21.Ke2 Qf6 22.Ne6 Qe6 23.Qe4 Qh6 24.Qc4 Qh5 25.f3 Nd4 26.ed4 Re8 27.Be4 Qg5 28.Kf2 Bb4 29.h4 Qf6 30.Qd3 g6 31.h5 Rd8 32.hg6 hg6 33.d5 Bc5 34.Ke2 Kg7 35.Rh3 Qb2 36.Rd2 Qc1 37.Rc2 Qg1 38.Rc5 Qc5 39.d6 Rd6 40.Qe3 Qc4 0–1. lllllll21 – bodkin (1630), internet, 2014.

6.d3 d5 7.de4 Ne4 8.Nf3 Bg4 9.h3 Bf3 10.Qf3 Nf6 (10...Nd7 11.Nc3 Nd6 12.Qg3=) 11.c4 Be7 12.Nc3 d4 (12...dc4!? 13.Bc4 Nbd7+/–) 13.Rd1+– c5 (13...0–0 14.Rd4 Qc7 15.Be2+–) 14.Qb7 Nbd7 15.Nd5 Rb8 16.Nf6 Nf6 17.Qf3 Qb6 18.ed4 0–0 19.Be2 Rbd8 20.d5 Rd6 21.0–0 Rfd8 22.Rfe1 Bf8 (22...Nd7 23.Bd3 Bf6 24.Qe4+–) 23.Bd3 g6 (23...Nd7 24.Bc1+–) 24.Re6! fe6 (24...Re6 25.de6 Combination; 24...fe6 25.Qf6 Decoy) 25.Qf6 (25.Bf6?! R8d7 26.Be5 Rf7+–) 25...ed5 (25...e5 26.Qe5 Kf7+–) 26.Qh8 Kf7 27.Qh7 Ke8 (27...Bg7 28.Qg7 Ke8 29.Re1 Re6 30.Bg6) 28.Re1 Re6 29.Bg6 1–0. Fournier,Frederic (1845) – Joubertnathan2000, Active, 2007.

5.b5 d5

6.c4 dc4 7.Bc4 Bd6 8.Nc3 0–0 9.Qc2 Re8 10.Nge2 Nbd7 11.Ng3 Nc5 12.Na4 Na4 13.Qa4 Be5 14.Qb3 Be6 15.Be6 Re6 16.Nf5 Ng4 17.h3? (better is 17.Be5!? Re5 18.Ng3+=) 17...Nf2!–+ 18.0–0 (18.Kf2 Qd2 Double attack) 18...Nd3 19.Be5 Re5 (worse is 19...Ne5 20.Qc3-/+) 20.Nd4 Qd7 21.Ra2 Rae8 (21...a4!? 22.Qd1–+) 22.Rc2 Rc5 (22...Rg5 23.Kh1–+) 23.Rc5-/+ Nc5 24.Qc3 b6 25.Qc4 g6 26.Rf6 a4 27.Rc6 Qe7 28.Qf1 Qe5 29.Rf6 Qd5 30.Qf4 Nb3 (better is 30...Re7-/+) 31.Nf5?? (better is 31.Nb3 ab3 32.Qc7+=) 31...gf5–+ 32.Qg5 Kf8 33.Rh6 (33.Qh6 Ke7 34.Qh4 Kd7 (worse is 34...Qd2 35.Rc6 Kd7 36.Qf4–+) 35.Qh7 Re7 (35...Qb5 36.Rf7 Kd8 37.Rc7 Nd2 38.Rc1-/+) 36.Rf5 Qd2–+) 33...Qe5 (33...Qb5!? 34.Rh7 Qe5 35.Qh5–+) 34.Rh7 Nc5 (34...Nd2 35.Qh4 Qa1 36.Kf2 Qf1 37.Kg3 Qe1 38.Kf4 Qh4 39.Rh4–+) 35.Qh4 Kg8 36.Rh5 Ne6 37.g4 (37.Rh6 Ra8 38.Qe7 Kg7–+ (38...Qb5?! 39.Qf6 Ng7 40.Qh4=)) 37...Rd8 (better is 37...Qa1!? 38.Kg2 f4 39.Rg5 Ng5 40.Qg5 Qg7 41.Qf4–+) 38.gf5 Qa1 0–1. Nikitin,Aleksander I (2090) – Klymchuk,Andrei, Open B – XVII Miedzynarodowy Festiwal POL, 2012.

6.c4 dc4 7.Bc4 Nbd7 8.Qc2=.

6.c4 c6 7.d4 cb5 8.cb5 b6 9.Ne2 Bd6 10.Ng3 0–0 11.Be2 Nbd7 12.0–0 Re8 13.a4 Nf8 14.Ba3 Ng6 15.Bd6 Qd6 16.Nd2 Bd7 17.Rc1 Rec8 18.Qb3 Nh4 19.Qb2 Nf5 20.Nf5 Bf5 21.Rc8 Rc8 22.Rc1 Rc1 23.Qc1 h5 24.Qc6 Qb8 25.h3 h4 26.Nf1 Bd7 27.Qc2 Qd6 28.Nh2 Qb4 29.Bf1 Kf8 30.Ng4 Ng4 31.hg4 Bg4 32.Qc7 g6 33.Qd8 Kg7 34.Qh4 Bd1 35.Qf4 Qe1 36.Qe5 Kg8 37.Qe8 Kg7 38.Qe5 Kh7 39.Qh2 Kg8 40.Qb8 Kg7 41.Qe5 ½–½. ejdrzej – griote (1610), internet, 2013.

6.c4 Nbd7 7.cd5 Nc5 8.Nc3 (8.Bf6 Qf6 9.Nc3 Bd6=) 8...Nd5+= 9.Na4 Nd3 10.Bd3 ed3 11.Nf3 Bf5 12.Qb3 Nf6 13.Rc1 Bd6 (13...Be4 14.Ne5 Bg6 15.Qc4+/–) 14.Nh4 Be4 15.Qc4 Qe7 16.Nc5 Bc5 17.Qc5 Qc5 (17...Rc8 18.f3 Bg6 19.Ng6 Qc5 20.Rc5 hg6 21.Bf6 gf6 22.0–0+/–) 18.Rc5 0–0–0 19.f3 b6 20.Bf6 gf6 21.Rc3 Bg6 22.Kf2 Rd7 23.a4 Re8 24.Rhc1 f5 25.Kg3 Re5 26.Rc6 Re6 27.R6c4 Re5 28.Kf4 f6 (better is 28...Re6!?+/–) 29.Rc6+– Kb7 (29...Rde7 30.Rb6 Re3 31.de3+– (31.Ng6?! hg6 32.Rf6 Re2+–)) 30.Rf6 (30.Rf6 Red5 31.Ng6 (31.Rg6?! hg6 32.Ng6 R5d6+–) 31...hg6 32.Rg6+–) 1–0. Woelfelschneider,Peter – Schaefer, 2008.

6.d3 Nbd7 7.c4 c6 8.Nc3 Qb6 9.cd5 cd5 10.Nh3 Nc5 11.Nf4 Be6 12.de4 de4 13.Na4 (13.Ne6?! Qe6 (worse is 13...Ne6 14.Nd5 Nd5 15.Qd5+/–) 14.Qc2 Rc8=) 13...Na4 14.Qa4 Be7 15.Ne6 fe6 16.Bc4 0–0 17.Bb3 Kh8 18.0–0 Bd6 19.Rac1 Rae8 20.Rc2 Qd8 21.h3 Qe7 22.Rd1 e5 23.Qa5 Ra8 24.Qc3 Ba3 25.Qe5 Qb4 26.Ba2 Bb2 27.Rb2 Qa4 28.Rbd2 h6 29.Be6 Rfe8 30.b6 Qc6 31.Rd6 Qc2 32.R1d2 Qa4 33.Qc5 Qa1 34.Rd1 Qb2 35.Qc7 Ra1 36.Bf5 Qa3 37.Rf6 (37.Rf6 Rd1 38.Kh2 Rh1 39.Kg3+–; 37.Qb7 Qa4 38.Kh2 Rd1 39.Rf6 Rh1 40.Kg3 Qb5 41.Rh6 Kg8+–) 1–0. Woschkat,Karl_Heinz (1890) – Haas,Uwe (2275), remoteschach.de, 2002.

6.Ne2 Bd6 7.d3 +=.

6.Ne2 Nbd7 7.Ng3 (7.Nbc3 Bd6+=) 7...h5 8.h4 (8.Nc3 h4 9.Nge2 Bd6+=) 8...Bd6–/+ 9.Be2 Ne5 10.Nh5 (10.Nc3 Neg4 11.Qc1 Bg3 12.Bg4 A) 12...hg4?! 13.fg3 Qd6 14.Ne2+=; B) 12...Ng4?! 13.fg3 Qf6 14.Rf1–/+ (14.Nd5?? Qf2 15.Kd1 c6 16.Bg7 cd5–+); C) 12...Bf2 13.Kf2 Bg4–+) 10...Nh5 11.Bh5 g6 12.Be2 (12.f4 ef3 13.Bf3 Rh4–/+) 12...Rh4–+ 13.Rf1 (13.Rg1 Qg5 14.Nc3 Ng4 15.Bg4 Bg4–+ (worse is 15...Rg4 16.d3–/+; worse is 15...Qg4 16.Qg4 Bg4 17.Nd5+=)) 13...Qg5 14.d4 (14.Rg1–+) 14...Ng4 15.Nc3 (15.Qd2 Rh2 16.c4 Rg2 17.Bg4 Bg4–+ (17...Rg4?! 18.cd5 Qd5 19.Nc3–+; 17...Qg4?! 18.cd5 Kf8 19.Nc3–+)) 15...Nf2! 16.Qb1 (16.Kf2 Bg3; 16.Rf2 Qe3 Combination) 16...Ng4 17.Nd5 (17.Nd1 Rh2 18.Kd2 Rg2–+) 17...Ne3 18.Ne3 Qe3 19.Qc1 Qg3 20.Kd1 (20.Kd2 Qg2 21.Qe1 Bg3–+) 20...Bf4 21.Qb1 (21.Rf4 Rf4 22.Qd2–+) 21...Bg4 22.Qa2 Be2 0–1. rusdin (1940) – grasul2009 (2430), gameknot.com, 2014.

6.Ne2 Be7 7.Nbc3 c6 8.Nf4 0–0 9.Be2 Nbd7 10.0–0 Nc5 11.d3 Qc7 12.Rb1 Rd8 13.bc6 bc6 14.d4 Nb7 15.Na4 Nd6 16.Nc5 (16.h4 Ba6+=) 16...Nd7 (16...g5 17.Nh5 Nh5 18.Bh5+=) 17.Nh5 a4 18.Qd2 Nb6 19.Qc3 Nbc4 20.Bc1 Ba6 (20...Nb5 21.Qb4+=) 21.Rb4 Bb5 22.Re1 Attacking the isolated pawn on a4 22...g6 23.Nf4 Qa7 24.Qa1 (24.h3 Rab8+=) 24...Rdb8+= 25.Bg4 Bd8 26.Rd1 Ba5 27.Rb1 Rd8 28.h3 (28.g3 Rab8–/+) 28...Qe7 29.Rf1 Rab8 30.Rd1 h6 31.c3 Bb6 32.Rb4 Bc5 33.dc5 Ne8 34.Qb1 Qc5 35.Be2 Ned6 36.Qc2 Kg7 37.Bf1 Qa7 38.Be2 Qe7 39.Rb1 Rb7 40.Rb4 Rdb8 41.Rb1 h5 0–1. marekt (2045) – gambit_queen (1930), gameknot.com, 2014.

5.c3 ab4

6.cb4 d5 7.g3 Bg4 8.Ne2 Bd6 9.Bg2 0–0 10.d3 c5 11.de4 de4 12.Nd2 cb4 13.a4 Qe7 14.0–0 Nc6 15.Re1 Rfd8 16.Qb3 Na5 17.Qc2 Rac8 18.Qb1 Nc4 19.Nc4 Rc4 20.Nd4 Be5 21.Bf1 Rcc8 22.Bg2 Bd4 23.Bd4 Bf3 24.Qb3 Rc6 25.Rac1 Rdc8 26.Bh3 Rc1 0–1. diablo005 – jav8874, internet, 2014.

6.cb4 Be7 7.g3 0–0 8.Bg2 d5 9.Ne2 Bg4 10.0–0 Qd7 11.d3 Bh3 12.de4 Bg2 13.Kg2 Ne4 14.Nf4 c6 15.Nc3 Bf6 16.Ncd5 cd5 17.Bf6 Nf6 18.Qd4 Nc6 19.Qc5 Rad8 20.Rfd1 Ne7 21.Ra2 Ne4 22.Qd4 Qf5 23.Qb6 Nc3 24.Qb7 Nd1 25.Qe7 Nc3 26.Rd2 Ne4 27.Rd4 g5 28.Nh3 Rfe8 29.Qb7 Re6 30.f4 Rh6 31.Ng5 Ng5 32.fg5 Qh3 33.Kf3 Qf1 34.Kg4 f5 35.gf6 Qh3 36.Kf3 Rf6 37.Rf4 Rf4 38.ef4 Qh2 39.Qe7 Qh1 40.Kg4 Qd1 41.Kh4 Rf8 42.Qg5 Kf7 43.Qh5 Qh5 44.Kh5 d4 45.Kg4 d3 46.Kf3 Re8 47.Kg4 d2 48.f5 d1Q 49.Kg5 Rg8 50.Kf4 Qd2 51.Kf3 Qd3 52.Kf2 Rg3 53.f6 Re3 54.b5 Qd2 55.Kf1 Re1 0–1. rryy44 – pesadelo, internet, 2014.

4.a3 a6

5.c4 Nc6 6.b5 ab5 7.cb5 Na5 8.Nc3 b6 9.Nge2 Bb7 10.Ng3 d5 11.Be2 Be7 12.0–0 0–0 13.f3 ef3 14.Bf3 Nc4 15.Bc1 c6 16.a4 cb5 17.Nb5 Bc6 18.Qb3 Bb5 19.Qb5 Nd6 20.Qb3 Nde4 21.Nf5 Bc5 22.d4 Bd6 23.Nd6 Qd6 24.Ba3 Qe6 25.Bf8 Rf8 26.Be4 Ne4 27.Rad1 f5 28.Qb4 Qg6 29.a5 ba5 30.Qa5 Ng5 31.Qd5 Kh8 32.Kh1 Ne4 33.Rf3 Qh5 34.Qe5 Nf2 35.Kg1 Nd1 36.Qf4 1–0. lllllll21 (1610) – azan12, internet, 2013.

5.c4 d5 6.c5 b6 7.cb6 cb6 8.Nc3 Be6 9.Nce2 Nc6 10.Nd4 Qd7 11.Ne6 Qe6 12.Qc2 Rc8 13.Rc1 Nb4 14.Qc8 Qc8 15.Rc8 Kd7 16.Rc1 Nc6 17.Bf6 gf6 18.Ba6 Ba3 19.Rb1 Nb4 20.Kd1 Na6 21.Rb6 Nc5 22.Ne2 Ra8 23.Nc3 Nd3 24.Ke2 Bb2 25.Nd5 f5 26.Rb7 Kc6 27.Rf7 Kd5 28.Rf5 Ke6 29.Rh5 Ra1 30.Ra1 Ba1 31.Rh7 Kf5 32.Rf7 Kg6 33.Re7 Kf5 34.Re8 Nc1 35.Kd1 Nd3 36.Ke2 Bh8 0–1. aleksandras19 – vanziom, internet, 2013.

5.Bc4 Bd6 6.Nc3 0–0 7.Nge2 Be5 8.0–0 d6 9.Rb1 b5 10.Ba2 Nc6 11.d4 Bh2 12.Kh1?? (better is 12.Kh2 Ng4 13.Kg3=) 12...Ng4–+ 13.Nf4 (13.g3 Qf6 14.Nf4 Bg3 15.Ne4 Qh4 16.Kg2 Bf2 17.Nd5 Ne3 18.Ne3 Be3 19.Qf3 Bh3 20.Qh3 Qe4 21.Qf3 Qc2 22.Kh1 Bd4 23.Rfc1–+) 13...Bf4 14.Ne4 (14.g3 Qg5 15.Ne4 Qh5 16.Kg2 Be3 17.d5–+) 14…Qh4 0–1. Neumann,Frank – Mori,Roberto, RN–2012–0–00452, 2012.

5.h3 Nc6 6.Ne2 d5 7.Nf4 Bd6 8.c4 dc4 9.Bc4 b5 10.Bb3 Qe7 11.0–0 Be6 12.Ne6 fe6 13.Qc2 Qd7 14.Bf6 gf6 15.Qe4 e5 16.Bd5 f5 17.Bc6 fe4 18.Bd7 Kd7 19.Nc3 a5 20.Ne4 ab4 21.Nd6 cd6 22.ab4 Ke6 23.f4 e4 24.Rac1 Rab8 25.Rc7 Ra8 26.Rfc1 h5 27.Rg7 Kf6 28.Rcc7 Rac8 29.Rcf7 Ke6 30.Re7 Kf6 31.Rgf7 Kg6 32.Rd7 Rhf8 33.Rg7 Kf6 34.Rh7 Rh8 0–1. aleksandras19 – vanziom, internet, 2013.

5.c4 Be7

6.Nc3 0–0 7.Rc1 d5 8.cd5 Bg4 9.Qc2 Bf5 10.Bc4 Nbd7 11.Nge2 Nb6 12.Bb3 Nfd5 13.Nd4 Bg6 14.0–0 Nc3 15.Bc3 c5 16.bc5 Bc5 17.Ne2 Rc8 18.Qb2 Be7 19.Bg7 Re8 20.Nf4 Ba3 21.Qa3 Kg7 22.Qb2 Qf6 23.Qa2 Rc1 24.Rc1 Rc8 25.Rc8 Nc8 26.h3 Nd6 27.g3 1–0. lican – alirioa, internet, 2013.

6.Ne2 0–0 7.Ng3 d5 8.cd5 Qd5 9.Nc3 Qc6 10.Be2 b5 11.0–0 Bb7 12.Qc2 Qe6 13.Rac1 Rc8 14.d3 ed3 15.Bd3 g6 16.Nce4 Ne4 17.Be4 Be4 18.Ne4 Nd7 19.Qc6 Qc6 20.Rc6 a5 21.ba5 Ra5 22.Rd1 Nb8 23.Rc3 c5 24.Rcd3 h5 25.h3 c4 26.Rd5 Nc6 27.Nc3 Ba3 28.Ba3 Ra3 29.Nb5 Ra5 30.Nc3 Rd5 31.Nd5 Ne5 32.Ne7 1–0. orangutandu – koronapl, internet, 2013.

4.a3 b6

5.Nc3 d5 6.d3 a5 7.ba5 Ra5 8.de4 Ne4 9.Ne4 de4 =.

5.c4 a5 6.b5 Be7 7.Ne2 (7.d3 Bb7=) 7...Bb7 8.Nbc3 0–0 9.Ng3 Re8 (9...Bd6 10.Be2=) 10.Be2 Bf8 (10...c6 11.0–0= (< 11.Nge4 Ne4 12.Ne4 cb5=; < 11.Nce4 Ne4 12.Ne4 cb5=)) 11.0–0+= h6 (11...Bd6!?+=) 12.f3+/– ef3 13.Bf3 Qc8 14.Bb7 Qb7 15.Rf6! gf6 16.Qg4 (16…Kh7 17.Nd5 Qd5 18.cd5+–) 1–0. Dziel,Jaromir – Frysiak,Adam, corr 2. AMM, Poland, 1993.

5.c4 Bb7 6.Ne2 a5 7.b5 d6 8.Ng3 Nbd7 9.Be2 h5 10.h4 Nc5 11.Bd4 Be7 12.Nc3 Qd7 (12...Ne6 13.0–0 d5 14.d3 Nd4 15.ed4 0–0+=; 12...0–0 13.0–0 Ne6 14.d3 ed3 15.Bd3 g6=) 13.Qc2 (13.0–0 Ne6 14.d3 Nd4 15.ed4 ed3+=) 13...Qe6 14.f3 (14.0–0 Rg8 15.f3 ef3+=) 14...0–0–0 (14...ef3 15.gf3 0–0–0+=) 15.0–0–0 (15.0–0 Rdg8+=) 15...d5 (15...ef3=) 16.cd5 Nd5 17.Nb1 (17.Bg7 Nc3 18.Qc3–/+ (worse is 18.dc3 Rhg8–/+)) 17...Nf4!–/+ 18.Bc5 (18.ef4 Nb3 (18...Rd4; 18...Qd7)) 18...Nd3 19.Bd3 ed3 20.Qa4 Bc5 21.Nc3 Qd6 22.Rh3 Ba3 23.Kb1 g6 24.Ka2 Bb4 25.Rc1?? (better is 25.Nge4 Qe6 26.Kb1–+) 25...Bf3! 26.gf3 Qe6 27.Qb3 Qh3 28.Nd5 (28.Nce4 Rd7 29.Qc4 Rhd8–+) 28...Rd5 (better is 28...Qg3 29.Rc7 Kb8–+) 29.Qd5 Qe6 (29...Qg3?! 30.Qa8 Kd7 31.Qh8 Bd2 32.Qd4 Qd6 33.Rd1 Qd4 34.ed4–+; 29...Bd2?! 30.Qa8 Kd7 31.Qd5 Kc8 32.Qa8 Kd7 33.Qd5 Kc8=) 30.Qe6 fe6 31.Ne4 Rf8 32.Rf1 Be7 33.Rg1 Rf3 34.Rg6 Rh3 (34...Rf5!? 35.Re6 Bh4 36.Kb3–+) 35.Re6 Kd7 36.Re5 Rh4 37.Ng3 (37.Nc3–+) 37...Bd6 38.Rg5 Rg4 39.Rg4 hg4 40.Nf5 Ke6 (40...Ke6 41.Nh4 Bb4–+) 0–1. Sviridov,Valentin – Antosik,Alois, Hornicky Kahanec, 1980.

5.d3 a5 6.de4 Ne4 =.

5.d3 d5 6.de4 Ne4 7.Nc3 =.

5.Bd4 Be7 6.d3 d5 7.de4 de4 8.c3 0–0 9.Nd2 Bb7 =+.

5.Be2 c5 6.bc5 bc5 7.d3 Nc6 8.de4 Ne4 9.Bc4 Rb8 =.

5.Ne2 d5 6.d3 ed3 7.Qd3 Bd6 8.Nd4 0–0 9.Nf5 Nc6 =.

5.f3 d5 6.c4 a5 7.cd5 ab4 8.fe4 Ne4 9.Bb5 Bd7 =+.

5.Bf6 Qf6 6.Nc3 Bb7 7.Nge2 a5 8.b5 Bc5 9.Nf4 Qd6= 10.Qg4 =.

5.g3 Bb7 6.Bg2 (6.f3 Be7 (6...a5 7.b5 d5 8.Bg2 Bd6 9.Ne2 Nbd7=; 6...c5 7.bc5 bc5 8.Nc3 d5 9.Rb1 d4=; 6...d5 7.Bg2 a5 8.b5 Bd6 9.Ne2 Nbd7=; 6...a6 7.Bg2 Be7 8.fe4 Ne4 9.Bg7 Rg8=) 7.Bg2 d5 8.Ne2 Nbd7 9.0–0 c5=; 6.Nc3 d5 (6...c5 7.bc5 Bc5 8.Bg2 Qe7 9.Nge2 0–0=; 6...a5 7.b5 d5 8.Bg2 Bd6 9.Nge2 Nbd7=; 6...Be7 7.Bg2 d5 8.Nge2 c5 9.bc5 bc5=; 6...Bd6 7.Bg2 a5 8.b5 0–0 9.Nh3 Be5=) 7.Bg2 c5 8.bc5 Bc5 9.Nge2 Nc6=; 6.g4 h6 (6...a5 7.b5 h6 8.Bg2 d5 9.d3 Nbd7+=; 6...a6 7.g5 Ng8 8.f4 h6 9.Nh3 hg5+=; 6...d5 7.g5 Nfd7 8.f4 c5 9.bc5 Nc5+=; 6...Qe7 7.g5 Ng8 8.f4 d5 9.Ne2 Qd7=) 7.Bg2 d5 8.d3 Nbd7 9.h4 c5+=; 6.Be2 c5 (6...Be7 7.f3 0–0 8.Nc3 d5 9.Nh3 d4+=; 6...a5 7.b5 Bc5 8.f3 d5 9.fe4 de4=; 6...d5 7.Nc3 c5 8.bc5 Bc5 9.Nb5 Nbd7+=; 6...a6 7.g4 d5 8.g5 Nfd7 9.Nh3 c5+=) 7.b5 a6 8.f3 d5 9.Nc3 Bd6+=) 6...Be7 (6...a5 7.b5 d5 8.f3 Bd6 9.Ne2 Nbd7=; 6...d5 7.f3 Be7 8.Ne2 a5 9.b5 0–0=; 6...c5 7.bc5 Bc5 8.d3 d5 9.de4 de4+=) 7.c4 (7.d3 d5 8.de4 de4 9.Qd8 Bd8=) 7...d5 (7...a5 8.b5 0–0 9.f3 Ne8=) 8.cd5 Qd5 (8...0–0 9.d3 Bd5=) 9.Nc3 (9.d3 Bc6=) 9...Qf5 (9...Qd3=) 10.Nge2 (10.d3!?+=) 10...0–0= 11.0–0 Nbd7 12.Nd4 Qg6 13.Rc1 (13.d3!? c5 14.Nde2=) 13...c5–/+ 14.bc5 Nc5 (worse is 14...Bc5 15.d3=) 15.f3 Nd3 16.Rb1 Nb2 17.Rb2 Ba3 18.Ra2 Bc5 19.Nb3 ef3 20.Bf3 Bf3 21.Qf3 Bb4 22.Nd5 Nd5 23.Qd5 a5 24.Nd4 Rad8 25.Qf3 Bc5 26.Nc6? (better is 26.Nf5!?–/+) 26...Qe6–+ 27.Rb2 Rd6 28.Na7 (28.d4 Rc6 29.Rc2 Re8–+) 28...Qd7 29.Nb5 Rd2 30.Rbb1 (30.Rd2 Qd2 (30...Qb5?! 31.Rfd1–/+) 31.Nd4 Bd4 32.ed4 Qd4 33.Kh1 Qc4–+) 30...Re8 31.Rfe1 (31.Rb3 a4 32.Rc3 f6 (32...Qb5?? 33.Qf7 Kh8 34.Rc5 Qf1 35.Kf1+–) 33.Rc5 bc5–+) 31...h6 32.Nc3 Qd3 33.Rbc1 Re3 (33...Re3 34.Re3 Qe3 35.Qe3 Be3 36.Kh1 Rh2 37.Kh2 Bc1–+) 0–1. Cembran – Luzuriaga,Norberto Horacio, corr, 1985.

5.Nh3 Bb7 6.Be2 c5 7.b5 a6 8.Nc3 (8.0–0 d5=) 8...Be7 (8...d5 9.0–0=) 9.0–0 0–0 10.d4 (10.d3 d5=) 10...ed3 (10...d5 11.dc5 bc5 12.f3=) 11.cd3 (11.Bd3 ab5 12.Nb5 d5=) 11...ab5 (11...d5 12.Bf3=) 12.Nb5 Nc6 13.d4 d5 14.Nf4 (14.dc5 bc5 15.Rc1 c4=) 14...c4=+ 15.Bf3 Re8 (15...Qd7 16.Nc3 Ra5 17.Qc2=+) 16.Qc2 Qd7 (16...Ra5 17.a4=+) 17.Nc3 (17.Rfb1 Nb4 18.Qc1 Qb5=+) 17...Nd8 18.a4 Ne6 (18...Bd6 19.Ncd5 Bd5 20.Nd5 Nd5 21.Qc4–/+) 19.Ne6 Qe6 20.Nb5 (20.Ba3 Ba3 21.Ra3 Ra5=) 20...Rec8=+ 21.h3 (21.Rfc1 Ne4=+) 21...Bb4 (21...Bc6 22.Bc3=+) 22.Rac1 (22.Bc3 Bc3 23.Nc3 Ne4=) 22...Ne4 (22...Bc6 23.Bc3 Bb5 24.ab5 Bc3 25.Qc3–/+) 23.Bc3 Nc3 24.Nc3 Rcb8 (24...Qd6 25.Nb5 Qf6 26.Rb1=+) 25.Nb5 Qe7 ½–½. Blaszczak,Jan – Frysiak,Adam, corr 2.AMM Poland, 1994.

5.Nh3 c5 6.bc5 Bc5 7.d4 =+.

5.Nh3 d5 6.Nf4 c6 7.b5 Be7 8.bc6 Nc6 9.Bb5 Bb7 =+.

5.d3 Bb7

6.de4 Ne4 7.Nf3 a5 8.Nbd2 =.

6.de4 Ne4 7.Nf3 c5 8.bc5 Nc5 9.Nc3 Nc6 +=.

6.de4 Ne4 7.Nf3 Nf6 8.Bd3+= Be7 9.0–0 0–0 10.Nbd2 (10.Nc3 a5 11.b5 Re8+=) 10...d5 (10...a5 11.b5+=) 11.c4 (11.Ne5 Nbd7+=) 11...dc4 12.Bc4 Nbd7 13.Qb3 a6 14.Ng5 (14.Rac1 b5 15.Bd3 Bd5+=) 14...Qe8 15.Bd3 (15.Qc2 c5 16.b5 Bd6=) 15...h6 (15...c5 16.Rfd1=) 16.Nge4+= c5 (16...Rd8 17.Rfd1+=) 17.bc5= Ne4 18.Ne4 Nc5 (18...Be4 19.Be4 Nc5 20.Qc2 Ne4 21.Qe4+=) 19.Nc5+= Bc5 20.Qc3 f6 21.Rfd1 Qh5 22.Qc2 (22.Rac1 Rfd8+=) 22...Rfd8= 23.Bh7 (23.Rac1 Bd6 24.h3 Bd5=) 23...Kh8 24.Bf5 Rd6 25.Rd6 Bd6 26.f4 (26.h3 Rd8=) 26...Bc5 27.Re1 (27.Bd4 Bd4 28.ed4 Re8=) 27…Re8=+ (28.Bc1 Bd4=+). Seidler,David – Figiel,Rafal, corr or01–002 E–mail, 2001.

4.a3 Be7

5.c4 a5 6.b5 b6 7.d3 c5 (7...Bb7!?=) 8.Nc3 Bb7 9.Be2 0–0 10.d4 cd4 11.Qd4 Bc5 12.Qd2 Qe7 13.f4 (13.Na4 d5=) 13...Rd8 (13...ef3 14.Bf3 Be3 15.Qe2 Bf3 16.Nf3–/+) 14.Nh3 d5 15.Nf2?? (15.cd5 Nd5 16.Nd5 Bd5+=) 15...dc4?? (better is 15...d4 16.0–0–0 Ba3–+) 16.Qc1–/+ Nbd7 17.Qc2? e4 seems the pivot of the position (better is 17.Bc4!? Rac8 18.0–0+=) 17...Qe6 (17...Be3 18.Bc4 Rac8 19.Be2–+) 18.0–0 (better is 18.Nfd1–+) 18...Be3 19.Ncd1 Bf4 20.Nh3 Be5 21.Be5 Qe5 22.Ne3 (22.Nc3 Nc5–+) 22...Rac8 (22...Qc5!? 23.Qc1 Nd5 24.Bc4 Ne3 25.Bf7 Kf8 26.Rf2–+) 23.Rad1 g6 (better is 23...Qc5 24.Qd2 Nd5–+ (worse is 24...Qb5 25.Qd4–+)) 24.Bg4 1–0. Rush,Bradley – Sotnikov,Oleg, 49. LSS No Engine Cup Preliminary, 2011.

5.d3 0–0 6.Ne2 c5 7.c3 c4 8.dc4 a5 9.Ng3 Nc6 10.Qc2 Re8 11.b5 Ne5 12.Ne4 d5 13.cd5 Nd5 14.c4 Nf6 15.Nf6 Bf6 16.Be2 Be6 17.0–0 b6 18.Rd1 Qc8 19.Bd4 Bf5 20.Qc3 Qc7 21.Nd2 Ng4 22.Bg4 Bd4 23.Qd4 Rad8 24.Qc3 Bg4 25.f3 Be6 26.e4 Qf4 27.Rac1 Rd6 28.Nf1 Rd1 29.Rd1 Rc8 30.Qe3 Qe5 31.Nd2 h5 32.Rc1 Qd6 33.Qc3 Rd8 34.Nf1 h4 35.Ne3 Qc5 36.Kf2 h3 37.Ke2 hg2 38.Ng2 Rd4 39.Ne3 f6 40.Nd5 Bd5 41.ed5 Rh4 42.Rh1 Qe7 43.Qe3 1–0. oldi62 – peho1231, internet, 2013.

5.d3 d5 6.c4 ed3 7.Qd3 dc4 8.Qd8 Bd8 9.Bc4 0–0 10.Nf3 Nbd7 11.0–0 Re8 12.Ng5 Rf8 13.Nd2 b6 14.Rfd1 h6 15.Ngf3 Be7 16.Nd4 Bb7 17.N2f3 Bf3 18.Nf3 Bd6 19.Rd3 Ne4 20.Bd5 Nf2? 21.Kf2+– Rad8 22.Rad1 Ne5 23.Be5 Rfe8 24.Bd6 (24.Bd6 Rd6 25.e4+–) 1–0. wlittle (2270) – doubletrouble (2000), net–chess.com, 2003.

5.Bf6 Bf6 6.c3 d5 7.a4 Bf5 8.Na3 c6 9.Nc2 g6 10.Nd4 Bd4 11.cd4 0–0 12.Be2 Nd7 13.f3 ef3 14.Bf3 Nf6 15.Ne2 Be4 16.Nf4 Bf3 17.Qf3 Ne4 18.0–0 Nd2 19.Qh3 Nf1 20.Rf1 Qe7 21.b5 Rae8 22.bc6 bc6 23.a5 Qe3 24.Kh1 Qh3 25.Nh3 Re4 26.Ng5 Rd4 27.h3 Ra4 28.Nf3 Ra5 29.Ne5 c5 30.Nd7 Rd8 31.Nf6 Kg7 32.Ng4 d4 33.Ne5 f6 34.Nc6 d3 35.Nd8 d2 36.Ne6 Kf7 37.Nf4 c4 38.Rd1 c3 39.Ne2 Re5 40.Nc3 Re1 41.Re1 de1Q 0–1. africa101 – nemkismiska, internet, 2014.

5.g3 0–0 6.Bg2 d5 7.Ne2 c6 8.0–0 Bg4 9.Re1 Nbd7 10.d3 Bf3 11.Qd2 Bg2 12.Kg2 Ng4 13.Nf4 g5 14.Nh3 Nde5 15.Be5 Ne5 16.Qe2 Nf3 17.Ng1 Ne1 18.Qe1 g4 19.Ne2 f5 20.Nf4 Rf6 21.Nd2 Rh6 22.de4 de4 23.c4 Bh4 24.Qe2 Bg5 25.Rd1 Bf4 26.ef4 Qd3 27.Qe1 Rd8 28.Nb1 Qd1 29.Qe3 Qf3 30.Qf3 gf3 0–1. diablo005 – mirus41, internet, 2013.

4.b5 a6

5.a4 d5 6.Bd4+=.

5.c4 ab5 6.cb5 d5 7.a4 Bd7 8.Be2 Bd6 9.Nc3 0–0 10.Qb3 Be6 11.d3? (better is 11.Qc2–/+) 11...ed3 12.Bd3 d4 13.Qc2 dc3 14.Qc3 Qe7 15.Nf3 (15.Qc2–+) 15...Bb4 16.Qb4 (16.0–0 Bc3 17.Bc3–+) 16...Qb4 17.Nd2 Qb2 18.Rb1 Qc3 19.Rb3 Qc1 20.Ke2 Qh1 21.Rc3 Bg4 22.Nf3 Qg2 (23.Bh7 Kh7–+) 0–1. GULP – willywonka, Live Game Caissa's Web, 2004.

5.c4 b6 6.Nc3 d6 7.Nge2 (7...ab5 8.cb5=). Skaug,Thorbjoern – Provaznik,Zdenek, corr ICCF TT–4–90, 1990.

5.Bd4 ab5 6.Bb5 Nc6 7.Bc6 dc6+=.

5.Ne2 ab5 6.Ng3 c6 7.c4 bc4–+ 8.Bc4 d5 9.Bb3 Bd6 10.0–0 Na6 11.d3 Nc5 12.de4–/+ Bg3 13.fg3 Bg4 14.Qd4–/+ Nce4 15.Nc3 Nc3 16.Qe5 Qe7 17.Qe7 Ke7 18.Bc3 Ne8 19.h3? Be6–+ 20.Rae1 f6 21.e4–/+ de4?? 22.Re4+/– Nc7 23.Rfe1 Kf7 24.Be6 Ne6 25.Re6 Ra2 26.Re7 Kg6 27.Rb7 Rha8 28.Ree7 Rg8 29.Rec7 Rc2 30.Rc6 Rd8 31.Rcc7 (31.Rcc7 Rc1 32.Kh2+–) 1–0. gtate (1805) – davidro (1850), net–chess.com, 2002.

5.a4 ab5

6.ab5 Ra1

7.Ba1 b6 8.c4 (8.Nh3 Bb4=) 8...Bb7+= 9.Nh3 Bb4 10.Be2 d6 (10...0–0 11.0–0=) 11.Qb3 Ba5 12.0–0 Nbd7 13.Rd1 (13.f3 0–0=) 13...Nc5 14.Qc2 0–0 15.d4 ed3 16.Bd3 Nd3 17.Rd3 (better is 17.Qd3!? Re8 18.Nc3=) 17...Be4–/+ 18.Bf6 (18.Ng5!? Bg6 19.f3+=) 18...Qf6–+ (18...gf6?! 19.Nf4+=) 19.Rd6?? (better is 19.Nf4–+) 19...Bc2 (better is 19...Qd6 20.Qb3 Rd8–+) 20.Rf6 Rd8 (20...Rd8 21.f3 gf6–+; worse is 20...gf6 21.Na3 Rd8 22.g4–+; 20...Bb1?! 21.Rc6–+) 0–1. Hasler,Ulrich – Veer,W, corr, 1992.

7.Ba1 c5 8.c4 (8.Bf6 Qf6 9.Nc3 Qf5+=) 8...d5 9.cd5 (9.Bf6 Qf6 10.cd5 Bf5=) 9...Nd5+= (worse is 9...Qd5 10.Bf6 gf6 11.Nc3+=) 10.Qa4 (10.Nc3 Bf5=) 10...Nb4 11.Nc3 Nd3 (better is 11...Bf5!?+=) 12.Bd3+= Qd3 (better is 12...ed3 13.Qe4 Be6 14.Qb7 Bd6+=) 13.Qa8?? (better is 13.Qe4 Qe4 14.Ne4+/–) 13...Bd6–/+ 14.Nge2 0–0 (14...Qc2 15.Qa4 Qa4 16.Na4+=) 15.Qa2 (better is 15.Qa4!? Be5 16.Nc1=) 15...Be6–/+ 16.Qb2 (16.Nc1 Qc3 17.Bc3 (17.dc3? Ba2 18.Na2 Nd7–+) 17...Ba2 18.Na2+=) 16...Be5 17.0–0 (17.Nc1 Qc4 18.Qc2–/+) 17...Nd7 (17...Qe2 18.Ne2 Bb2 19.Bb2–+) 18.f3 (18.Nf4 Bf4 19.ef4 f6+=) 18...ef3 (18...Bc4!? 19.Rf2 ef3 20.gf3–+) 19.Rf3–/+ Bg4 (19...Ra8 20.Nf4 Qd6 21.Qc1–/+) 20.Nf4 Bc3 (20...Qd6 21.Rf1 g5 22.h3 gf4 23.hg4 fe3 24.de3–+) 21.dc3 (21.Nd3? Bb2 22.Bb2 Bf3 23.gf3 Ra8–+) 21...Qc4 22.Rg3 (22.Rf1 Nb6–/+) 22...Ne5 (22...Nf6 23.h3 Bd1 24.Rg5–/+) 23.h3 Be6 (23...Ra8 24.hg4 Qa4 25.Qd2 Qa1 26.Kh2–/+) 24.Ne6 (24.Qb1 Ra8 25.Bb2 Bd7–/+ (worse is 25...Qb5 26.Ne6 fe6 27.c4=)) 24...fe6 (24...Qe6 25.e4–/+) 25.Kh2 (25.Qa3–/+) 25...Nd3 (25...Ra8 26.Qd2 Qd5 27.Qd5 ed5 28.Rg5–/+) 26.Qa3 (26.Qe2!? Rf2 27.Qd1–/+) 26...Nf2–/+ (26...Qb5?? 27.c4 Qd7 28.Rg7 Qg7 29.Bg7 Kg7 30.Qd3+–) 27.Qc1 (27.Qb2 h5 28.Rf3 Rf3 29.gf3 Nd3–/+) 27...Ne4 (27...Rd8 28.Qb2 Ne4 29.Rg4+=) 28.Rg4 Qd3 (28...h5 29.Rf4 Rf4 30.ef4 Qb5 31.Qd1–+) 29.c4 g6?? (better is 29...Rf1 30.Qb2 Nf6–/+) 30.Qb2+– Qd6 31.Kg1?? (better is 31.Rf4 Nf6 32.Kg1+/–) 31...Qd1 (31...Rf1! 32.Kf1 Qd1) 32.Kh2= Qd6 33.Rf4! (33.Rf4 Nf6 34.Kg1+/–) 1–0. DEFFM – GuestCFPJ, freechess.org, 2016.

7.Ba1 Bc5 8.c4 0–0 9.Ne2 Re8 10.Ng3 c6 11.Nc3 d5 12.Be2 Nbd7 13.0–0 Nb6 14.Qb3 dc4 15.Qc2 Bd7 16.Nce4 Ne4 17.Ne4 Qe7 18.Nc5 Qc5 19.Rc1 cb5 20.d4 Qd5 21.Bf3 Qg5 22.Bb7 Nd5 23.Qb2 Rb8 24.Bd5 Qd5 25.h3 Bc6 26.f3 Qg5 27.e4 Qe3 28.Kh1 f6 29.Rc4 Bd7 30.Rc3 Qe1 31.Kh2 Qh4 32.d5 Qf4 33.g3 Qe5 34.Qb4 h6 35.Rc1 Kh7 36.d6 Qe8 37.Rc7 Kg6 38.f4 h5 39.f5 Kh7 40.Bc3 Qf7 41.Bd2 Rc8 42.Bf4 Qa2 43.Qd2 Qd2 44.Bd2 Rc7 45.dc7 g6 46.Bb4 gf5 47.ef5 Kg7 48.g4 Kf7 49.Kg3 Ke8 50.Kf4 Bc8 51.gh5 Kf7 52.Ke4 Kg7 0–1. brother – helmut1234, internet, 2013.

7.Ba1 Be7 8.d4 d5+= 9.c4 c6 10.c5 0–0 (10...b6 11.Qa4 Bd7 12.bc6 Bc6 13.Qa7-/+) 11.Bc3 (11.Qa4 Bd7+=) 11...b6-/+ 12.bc6 (12.Qc2 Qc7-/+) 12...Nc6 13.Bb5 (13.cb6 Qb6 14.Nd2 Be6-/+) 13...Bd7 (13...Na7 14.Ba4 bc5 15.dc5 Bc5 16.Ne2-/+) 14.Qa4 (14.Ne2 Qc7-/+) 14...Qc7 15.Ne2 (15.f3 Rb8 16.Nd2 bc5 17.dc5 Bc5 18.Bf6 Be3–+) 15...bc5 (15...Rb8 16.0–0 Ng4-/+) 16.0–0 (16.dc5 Bc5 17.Bf6 gf6 18.Nbc3=) 16...c4–+ 17.Nd2 Rb8 18.Ra1 Rb5! 19.Qb5 Nd4 20.Qb2?? (better is 20.Ra8 Qd8 21.Rd8 Bd8 22.Nd4 Bb5 23.Nb5+=) 20...Ne2–+ 21.Kf1 (21.Kh1 Ng4 22.g3 Nf2 23.Kg2 Nd3 24.Ra8 Bf8–+) 21...Nc3 22.Qc3 h6 (better is 22...Qh2 23.Ra8 Ne8 24.Ke1–+) 23.Nb3 (23.Ra8 Kh7 24.Kg1 Ng4–+) 23...Ng4 (better is 23...Qh2 24.Nd4 Qh1 25.Ke2 Qg2 26.Ra7–+) 24.g3 (24.h3 Qh2 25.Nd4 Ne5 26.Ra8 Kh7–+) 24...Nh2 25.Kg2 Nf3 26.Nd4 Bg4 27.Ra5 0–1. Martinez Pastor,F – Tolosana Esteban,E (1795), Madrid ESP, 3rd Gonzalez Mem–B, 2012.

7.Ba1 c6

8.c4 Qa5?? 9.Nc3?? (better is 9.Bf6 gf6 10.Qg4+/–) 9...Bb4 10.Nge2 0–0 11.g3 (11.Qa4 d5=) 11...d6 12.Bg2 d5 (12...Be6 13.Bb2+=) 13.0–0 (13.cd5 cd5 14.0–0 Re8=) 13...Nbd7 (13...dc4!? 14.Qc2 Bg4–/+) 14.cd5 cd5 15.Qb3 (15.f3 Re8=) 15...Nb6 (15...Nc5 16.Qd1+=) 16.Bb2= Nc4?? (better is 16...Bd6=) 17.Ra1+– Nd2 18.Qc2 Bc3 (18...Nf3 19.Bf3 Qb6 20.Bg2+–) 19.Ra5 (better is 19.Nc3!? Nf3 20.Bf3+–) 19...Ba5+/– 20.Nf4 (20.Nf4 Be6 21.Ne6 fe6 22.Qc5+/–) 1–0. GuestJKKK – GuestYDTY, freechess.org, 2017.

8.c4 cb5 9.cb5 Bb4 10.Qa4 Qa5 (10...Qe7 11.Bf6 gf6 12.Nc3 Bc3 13.dc3+=) 11.Qa5+/– Ba5 12.Bf6 (12.Be5!? d6 13.Bd6+/–) 12...gf6+= 13.Bc4 (13.Ne2+=) 13...0–0 (13...d6!?=) 14.Ne2 d6 (14...f5 15.Nbc3+/–) 15.Nd4 (15.Bd5 f5 16.f3 ef3 17.gf3 Re8+/–) 15...Nd7+= 16.Nf5 (16.f3 Nb6 17.Bb3 f5+=) 16...Bb4 (16...Nb6 17.Nd6 Bb4 18.Ne4 (18.Nc8? Rc8 19.Bf7 Kf7–+) 18...Nc4 19.Ke2+=) 17.Ng3 (17.Nc3 Nb6 18.Ne7 Kg7+=) 17...Nc5 (17...Nb6 18.Be2 f5 19.f3=) 18.0–0 (18.Ke2 Bd7 19.Nc3 Bc3 20.dc3 Ra8+=) 18...Be6 19.Be6 White gets in control (19.Be2 Ra8=) 19...fe6+= 20.Nc3 (better is 20.f3 f5 21.fe4 fe4 22.Nh5+=) 20...Nb3 (better is 20...d5+=) 21.Nge4 d5 22.Rb1 Nd2 (22...Bc3 23.dc3 (worse is 23.Nc3 Nd2 24.Ra1 Rc8+=; 23.Rb3?! Ba5 24.Nc5 Rc8+/–) 23...Na5 24.Nc5+/–) 23.Rb4 (23.Nd2?! Bc3 24.Nb3 Rc8+=) 23...Ne4 24.Ne4 de4 25.Re4 Rd8 (25...Rc8!? 26.Kf1 e5+/–) 26.Rd4+– Rc8 (better is 26...Rd4 27.ed4 e5 28.de5 fe5+–) 27.Rd1 (better is 27.Kf1!?+–) 27...Rc5+/– 28.Rb1 b6 (28...f5 29.f4+/–) 29.Kf1 (29.g4 f5 30.gf5 ef5+/–) 29...e5 (29...f5 30.Ke2+/–) 30.Ke2 (30.e4 Kf7+/–) 30...e4 (30...Rc2 31.Kf3+/–) 31.Kd2 (31.Rb2 f5+/–) 31...f5 (31...Rg5 32.g3+=) 32.f3+/– Rd5 (32...Rc4 33.g4 ef3 34.gf5+/–) 33.Ke2 ef3 34.gf3 Kf7 35.e4 (35.Rb4!?+/–) 35...fe4+= 36.fe4 Rh5 37.Rc1 Rh2 (37...Rb5 38.Rc7 Kg6 39.Ke3+=) 38.Kf3 (38.Kd3 Rb2 39.Rf1 Ke6=) 38...Rh3 (38...Rh5 39.Rb1=) 39.Kf4 (39.Kg4 Rb3+=). Beekes,Noud – D'Emilia,Jack, RL–2007–0–00098, 2007.

8.c4 cb5 9.cb5 Bb4 10.Ne2 Qa5 11.Nbc3 d5 12.Nd4 0–0 13.Be2 Bd7 14.0–0 Be6 15.Qb3 Nbd7 16.Rb1 Bc5 17.Na4 Rc8 18.Bc3 Qd8 19.Nc5 Nc5 20.Qa3 Bd7 21.h3 b6 22.Bb4 Ra8 23.Qb2 Na4 24.Qb3 Nc5 25.Bc5 bc5 26.Nc6 Bc6 27.bc6 Ne8 28.Qb7 g6 29.Bg4 Nc7 30.f3 ef3 31.Bf3 Na6 32.c7 Qc8 33.Qc8 Rc8 34.Bd5 Nc7 0–1. brother – helmut1234, internet, 2013.

8.c4 cb5 9.cb5 Bb4 10.Bf6 Qf6 11.Qc2 0–0 12.Qe4 Bc5+/–.

8.c4 cb5 9.cb5 d5!?+=.

8.c4 cb5 9.Qc2 bc4 10.Bc4=.

8.c4 d5 9.d4 ed3 10.Bd3 dc4 11.Bc4 Qd1 12.Kd1 Bd7 13.Bf6 gf6 14.bc6 Bc6 15.Nf3 Bf3 16.gf3 Bc5 17.Rg1 Nc6 18.Rg7 Ne5 19.Bb3 Kf8 20.Rg3 Rg8 21.f4 Nd3 22.Ke2?? Nb4?? 23.Nc3 Nc6 24.Ne4 Bb4 25.Nf6 Rg3 26.hg3 Bc3 27.Nh7 Kg7 28.Ng5 Na5? 29.Bf7 b5 30.e4 b4 31.Ba2 b3 32.Bb1 Nc4 33.Ne6 Kf6 34.f5 Na3 35.Bd3 b2 36.g4 b1Q 37.g5 Kf7 38.Bb1 Nb1 39.f4 Bb4 40.g6 Kg8 41.f6 Nc3 42.Kd3 Ne4 43.Ke4 Bf8 44.f5 Bh6 45.f7 Kh8 46.Ke5 Bf4 47.Kf4 (47.Nf4 Kg7 48.Ne6 Kh6 49.f8Q Kh5 50.Kf4 Kh4 51.Qh8#). chevin – slopoke, Live Game Caissa's Web, 2004.

8.c4 d5 9.Bd4+=.

8.c4 d5 9.Bf6 Qf6 10.bc6 bc6 11.Nc3 Be6 (11...Bb4 12.Nge2 dc4 13.Qb1=) 12.cd5 cd5 13.Qa4 Nd7 14.Bb5 Qe5 (14...Qe7!?+=) 15.Bd7+/– Bd7 16.Qa8 Ke7 17.Nd5 (worse is 17.Qd5 Qd5 18.Nd5 Kd6+=) 17...Ke6 (17...Kd6 18.Nc3+/–) 18.Ne2 (better is 18.Nc3+–) 18...Bd6? (better is 18...f5+/–) 19.Nef4+– Kf5 20.g4! (20.Qh8?! Qa1 21.Ke2 Bb5 22.d3 Qb2 23.Ke1 Qc1 24.Ke2 Qc2 25.Ke1 Qc1 26.Ke2 Qc2 27.Ke1 Qc1=) 20...Kg4 (20...Kg5 21.h4 Kg4 22.Rg1 Kh4 23.Qh8 Qa1 24.Ke2 Bg4 25.Rg4 Kg4 26.Qh7 Qa6 27.d3 ed3 28.Qd3 Qd3 29.Nd3 Kf5+–) 21.f3! (21.Qh8 Qa1 22.Ke2 Bb5 23.d3 ed3 24.Nd3 Qa2 25.Kd1 Qb3 26.Kc1 Ba3 27.Kd2 Qd3 28.Ke1 Qe2) 21...Kf3 (21...ef3 22.Rg1 Double attack (22.Qh8 Zwischenzug); 21...Kf3 22.0–0 Double attack (22.Qh8 Zwischenzug)) 22.Rg1 Ra8 (22...Qa1 23.Qa1 Bf4 24.Qd1) 23.Rg3 1–0. DEFFM – ArthurJap, freechess.org, 2017.

8.Bf6 Qf6 9.Nc3 d5+=.

7.Ba1 d5

8.b6+=.

8.c4 Bb4 9.cd5 Nd5 10.Bg7 Rg8 11.Bd4 Bg4 (11...Bf5 12.Qa4+=) 12.Be2 (12.f3 Qh4 13.g3 ef3 14.Qb3+–) 12...Be2= 13.Qe2 Rg2 14.Qh5 Qg5 15.Qg5 Rg5 16.Nh3 (16.f3 f5=) 16...Rg2 (16...Rh5!? 17.Ng1 c5–/+) 17.Nc3+= Bc3 (17...Nc3 18.dc3 Bd6 19.Kf1+=) 18.dc3= Nd7 19.Nf4 (19.Kf1!? Rg4 20.f4 ef3 21.Kf2=) 19...Nf4+= 20.ef4 f5 21.Ke2 c6 22.bc6 bc6 23.h4 c5 24.Be3 h5 25.Ra1 Ke7 (25...Rh2 26.Rg1+=) 26.Ra6 (26.Ra7 c4=) 26...Rh2 (26...Rg4 27.f3 Rh4 28.fe4 fe4 29.f5 Rh2 30.Kd1+=) 27.Ra7+= Kd6 28.Ra6 Kd5 (28...Kc7 29.Rg6+=) 29.Ra7 (29.c4 Kc4 30.Rd6 Nb8= (30...Rh4? 31.Rd7 Kb4 32.Rb7 Kc3 33.Bd2 Kc4 34.Rf7+–)) 29...Nf6 (29...Kc6 30.Ra6 Nb6 31.Ra5–/+) 30.Rf7 (better is 30.c4 Kc4 31.Rc7 Rh4 32.Rc5 Kb4 33.Rf5=) 30...Ng4?? (30...Ke6 31.Rc7 Nd5 32.Rc6 Kd7 33.Rc5 Kd6–/+ (worse is 33...Ne3 34.Ke3 Ke6 35.Rc6 Ke7 36.Kd4+=)) 31.Rf5+– Kd6 32.Rh5 (32.Bc5!? Kc6 33.Rh5 Nf6+–) 32...Ne3 33.Ke3 Rh3 34.Kd2 (better is 34.Ke4 Rc3 35.Rh6 Kd7 36.Kd5+–) 34...Rd3+/– 35.Kc2 c4? (better is 35...Rf3!?+=) 36.Re5+– Rf3 37.Re4 Rf2 38.Kd1 Kd5 39.Re5 (39.Ke1 Rf3 40.Rd4 Kc5+/–) 39...Kd6+/– 40.Rf5 Ke6 41.Rf8 Ke7 42.Ke1 (better is 42.Rh8+/–) 42...Rh2? (42...Rf3 43.Ke2 Rc3 44.Rc8+/–) 43.Rh8 (43.Rc8 Rh4 44.Rc4 Rh2+–) 43...Kf7 (better is 43...Rc2!?+/–) 44.Rc8+– Rh4 45.Rc4 Ke6?? (45...Rh2+–) 46.f5! (46.f5 Kf5 47.Rh4+–) 1–0. GuestKYWH – VVZ, freechess.org, 2017.

8.c4 c6 9.Nc3 Qa5 10.Qa4 (10.f3 Bc5+=) 10...Qa4 11.Na4 Nbd7 12.d3 cb5 13.cb5 Bb4 (13...Bd6 14.Bd4+=) 14.Bc3= Bc3 (14...Bd6 15.Nb2=) 15.Nc3 0–0 16.de4 de4 17.Nge2 Nc5 18.Nf4 (18.Nd4 Be6=) 18...g5+= 19.Nfd5 Nd5 20.Nd5 Be6 (20...Rd8 21.Nc7+=) 21.Nc3 (21.Nc7 Rc8 22.Ne6 Ne6=) 21...Ra8+= 22.Be2 (22.Kd2 Ra1+=) 22...Ra1–/+ 23.Nd1 Bb3 24.0–0 Bd1 (better is 24...Rc1!?–/+) 25.Rd1= Rd1 26.Bd1 Kg7 27.f3 Kf6 (27...f5 28.h3=) 28.Kf2 (28.g4 Ke5=) 28...Ke5 29.Bc2 (29.g4 Kd5=) 29...f5 30.h3 h6 (30...h5 31.g3+=) 31.g4= f4 32.ef4 (32.Ke2!?=) 32...Kf4–/+ (worse is 32...gf4 33.Be4 Ne4 34.fe4 Ke4 35.h4+=) 33.fe4 Ne4 34.Be4? (better is 34.Kg2–/+) 34...Ke4–+ 35.Ke2 b6 36.Kf2 (36.Kd2–+) 36...Kf4 37.Kg2 Ke3 38.Kg3 Kd4 39.Kf3 Kd3 (39...Kc4 40.Ke4–+) 40.Kg3 (40.h4 gh4 41.Kg2 Kc4+=) 40...Kc4 41.Kf3 Kb5 42.Ke4 Kc5 43.Kf5 b5 44.Kg6 b4 45.Kh6 b3 46.Kg5 b2 47.h4 b1Q 48.Kh6 (48.h5 Kd5 49.h6 Ke5 50.h7 Qb8 51.Kh4 Qh8 52.Kg3 Ke4 53.Kh3 Kf3 54.Kh4 Qf6 55.g5 Qg7 56.h8Q Qh8) 48...Qe4 (48...Kd5 49.h5 Qb8 50.Kg6 Qg8 51.Kf6 Qe6 52.Kg7 Qg4 53.Kf7 Qf3 54.Kg8 Ke6 55.h6 Qg3 56.Kh7 Kf7 57.Kh8 Qg8) 49.Kh5 (49.Kg5–+) 49...Kd6 50.Kg5 Ke6 0–1. Arndt,Heiko – Kuban,Guenter (2250), Crailsheim op, 1999.

8.c4 c6 9.bc6 bc6 10.Bf6 Qf6 11.cd5 cd5=.

8.c4 c6 9.cd5 cd5 10.Qc2 Nbd7 11.Nc3 Nc5 12.Na4 b6 13.f3 Be7 (better is 13...Bf5!?+=) 14.Bf6+= Bf6 15.Nc5 bc5 16.Qc5 Be7 17.Qc6 Bd7? (better is 17...Qd7!?+/–) 18.Qd5+– Qa5 (18...0–0 19.fe4 Qc7 20.Nf3+–) 19.Bc4 (19.Qe4!? Qa3 20.Kf2 Qd6+–) 19...Qa1 20.Kf2 Be6? (20...ef3 21.g3 Be6 22.Qc6 Bd7 23.Nf3 Qa5 24.Bf7 Kd8+–) 21.Qe4 Bc4 (21...Bd7 22.d4+–) 22.Qc6 (22.Qc4?! 0–0+–) 22...Kf8 1–0. DEFFM – GuestYJFCghbf, freechess.org, 2017.

8.c4 Nbd7 9.Qc2+=.

8.c4 Be6 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3+=.

8.Bd4+=.

8.Ne2 Bd6 9.Nf4 Bf4 10.ef4+=.

8.Ne2 Be7 9.Bf6 Bf6 10.c4 c6 (10...dc4 11.Nec3 Bf5 12.Bc4+=) 11.bc6 bc6 12.Nbc3 0–0 13.cd5 cd5 14.Qb3 Be6 15.Nf4 Can d5 get defended? 15...Bc3 16.Qc3 Nd7 (16...Qb6 17.Ne6 Qb1 18.Ke2 fe6 19.Qc7+=) 17.Be2= Qb6 (17...Qc8 18.0–0=) 18.0–0 Nc5 (18...Nf6 19.Rc1=) 19.Rc1 Nd7 20.d4 g5 (20...Rb8 21.Qc6=) 21.Ne6+= Qe6 22.Qc7 f5 (22...Rb8 23.Bd1 Ra8 24.Qg3+=) 23.Ba6 Qf7 (23...f4!?+/–) 24.Bc8+– Nf6 25.Qe5 Ng4 26.Qd6 Kh8 27.h3 Nf6 (better is 27...Qf6 28.Qd5 Nh6+–) 28.Rc7 Qg8 29.Bf5 h5 30.Be6 Qg6 (30...Rd8 31.Qe5 Qg6+–) 31.Qf8 1–0pcmvr (2870) – ajochem (2405), net–chess.com, 2009.

5.ba6 Na6

6.Ne2 d5 7.Ng3 Bd6 8.Ba6 Ra6–/+ 9.0–0 h6 10.Bf6 Qf6 11.c3 Bg3 12.fg3 Qe6 13.Qc1 0–0 14.Na3 Qd6 15.Nc2 Be6 16.Nb4 Raa8 17.d4 ed3 18.Nd3 d4 19.Nf4 dc3 20.Ne6=+ Qe6 21.Qc3 Qb6 22.Rfb1= Qc6 23.Qc6+= bc6 24.a4 Rfe8 25.Kf2 c5 26.a5+/– c4 27.a6 Re7 28.a7+/– Kh7?? 29.Rb8+– c5 30.Ra8 (30.Ra8 Re6 31.Rh8 Kh8 32.a8Q Kh7 33.Qd5+–) 1–0. pinecrest1981 – TheBlackKnight, Live Game Caissa's Web, 2005.

6.Ne2 Be7 7.Nf4 0–0 8.Be2 d5 9.0–0 c6 10.c4 Bd7 11.Nc3 Nc7 12.Rb1 Ne6 13.cd5 Nf4 14.ef4 cd5 15.d3 Bc6 16.de4 Ne4 17.Bf3 Nc3 18.Bc3 Ra2 19.Qb3 Ra3 20.Qb2 Bf6 21.Bf6 Qf6 22.Qa3 Qf4 23.Rfe1 h6 24.Qe3 Qf6 25.Qe7 Qg6 26.g3 Re8 27.Qa3 Rb8 28.Re7 Qb1 29.Kg2 Qg6 30.Qa7 Qd6 31.Re1 b5 32.Kg1 Ra8 33.Qb6 Qf6 34.Qc5 Qf3 35.Qc6 Ra2 36.Qc5 b4 37.Rf1 Qe4 38.Qc8 Kh7 39.Qc1 b3 40.Qb1 1–0. fjanusz52 – koronapl, internet, 2013.

4.b5 Bb4

5.a3 Ba5 6.c4 0–0 7.Nh3 (7.Ne2 d6+=) 7...a6 8.a4 (8.Nc3 ab5 9.Nd5 Nd5 10.cd5 d6+=) 8...d5 (8...d6 9.Nf4+=) 9.Nf4 Bg4 (9...Nbd7 10.Nd5 c6 11.Nf6 Nf6 12.Nc3=) 10.f3 ef3 11.gf3 Bf3?? (better is 11...Ne4 12.h4 Ng3=) 12.Qf3+– dc4 (12...ab5 13.ab5 (worse is 13.cd5 b4+–) 13...Nbd7 14.Rg1+–) 13.Bc4 (13.Qb7?! Nbd7 14.Bc4 ab5 15.Bb5 Nc5+–) 13...Nbd7 14.Rg1 ab5 (14...Kh8+–) 15.Qg3 g6 (15...Nh5 16.Nh5 g6 17.ab5 Re8 18.Bf7 Kf7 19.Qf4 Nf6 20.Bf6 Qd5 21.Ra5 Qh5 22.Bg5 Kg8 23.Ra8 Ra8 24.Qc4 Kg7 25.Qc7 Kg8 26.Qc4 Kg7 27.Qd4 Kg8 28.Qd5 Kg7 29.Qb7 Kg8 30.Qa8 Kg7 31.Rf1 Qh4 32.Bh4 g5 33.Qf8 Kg6 34.Qf6 Kh5 35.Qg5) 16.Ng6! bc4 (16...hg6 17.Qg6 Mate attack) 17.Ne7 Kh8 18.Qg7 1–0. DEFFM – GuestDWNT, freechess.org, 2018.

5.a3 Bc5=.

5.a3 Be7=.

5.c4 d6 6.a3 Bc5 7.d4=.

5.Ne2 0–0 6.a3 Ba5 7.Nf4 d5 8.Be2 c5 9.0–0 Bc7 10.Bf6 (10.d4 c4=) 10...gf6 (10...Qf6 11.Nc3 Bf4 12.Nd5 Bh2 13.Kh2 Qd6 14.Nf4 g5–+) 11.f3 Bf4 12.ef4 f5 13.a4 (13.Qe1 Qf6 14.Nc3 Be6+=) 13...d4 14.Ra3 (14.fe4 d3! (14...fe4?! 15.Qe1=) 15.Nc3 de2 16.Qe2 fe4 17.Ne4 Qd4 18.Qe3 Nd7–/+) 14...d3+= 15.cd3 Qd4 16.Kh1 e3 (16...ef3 17.Bf3 Re8 18.Nc3+=) 17.de3+/– Qe3 18.d4 Qe7? (18...Qd4!? 19.Rc3 Re8+=) 19.dc5+– Qc5 White creates threats along the open c–file. White gets strong play along the (19...Re8 20.Bc4+–) 20.Rc3 Qe7 21.Bd3 (21.Re1 Qh4+–) 21...a6 (21...Re8 22.Qc2 Be6 23.Rc1+–) 22.Re1 Qd6 23.Qc2 Bd7 24.Bf5 Bf5 25.Qf5 ab5 26.ab5 Nd7 (26...Rd8 27.Rc8 h6 28.Rd8 Qd8 29.Nc3+–) 27.Rd3 Qb4 The mate threat is Qxe1 28.Red1 Rfe8 Threatening mate... how? 29.Nc3 Nf8 (29...Nc5 30.Qg5 Kf8 31.Rd5 Qc3 32.Qh6 Kg8 33.Qg5 Kh8 34.Re5–/+) 30.Ne4 Re6 31.h4 (31.Qg5 Ng6+–) 31...Qe7 32.Qh5 Ng6 33.Ng5 Re1 34.Kh2 Rd1 35.Qh7 The passed pawn on h4 quickly leads to threats 35...Kf8 36.Rd1 Qf6 37.h5 (better is 37.g3!?+–) 37...Qf4+/– 38.Kg1 Qe3 39.Kh1 The mate threat is Qxf7 39...Qg5 40.hg6 fg6?? (better is 40...Qg6 41.Qh8 Qg8 42.Qh6 Qg7+/–) 41.Qh8+– Kf7 Threatening mate: Rxh8 42.Rd7 (better is 42.Qa8 Qb5 43.Qa2 Kf6 44.Rb1+–) 42...Ke6 43.Qh3 Kf6 44.Rd4?? (44.Rd6 Kg7 45.Qd7 Kg8+/–) 44...Rf8 (44...Ra1 45.Kh2 Qe5 46.f4 Qf5+–) 45.b6+/– Kg7 46.Rd7 Rf7 47.Rf7 Kf7 48.Qd7 (48.Qh7 Ke6 49.Qb7 Qh6 50.Kg1 Qe3 51.Kf1 Qd3 52.Ke1 Qe3 53.Kd1 Qd3 54.Kc1 Qc3 55.Kb1 Qb3 56.Ka1 Qa3 57.Kb1 Qb3 58.Kc1 Qc3 59.Kd1 Qd3 60.Ke1 Qe3 61.Kd1 Qd3=) 48...Kf8? (better is 48...Qe7 49.Qe7 Ke7+/–) 49.Qc8 (49.Qb7 Qh6 50.Kg1 Qe3 51.Kf1 g5+–) 49...Kg7 50.Qb7 The passed pawn on b6 will quickly become a dangerous weapon 50...Kh6 (50...Kf8 51.Qc8 Ke7 52.Qc7 Ke8 53.Qc6 Ke7 54.g4+–) 51.Qc7 Qe3 52.Kh2 (52.b7 Qe1 53.Kh2 Qh4 54.Kg1 Qe1 55.Kh2 Qh4 56.Kg1 Qe1 57.Kh2=) 52...Qd4 53.Qc1 g5 54.b7 Qh4 55.Kg1 Qd4 56.Kf1 Qd3 57.Ke1 Qb5 (57...Qd6 58.Qc8 Qe5 59.Kf1 Qa1 60.Ke2 Qe5 61.Kd3 Qd5 62.Kc2 Qa2 63.Kc3 Qa3 64.Kc4 Qc1 65.Kb5 Qb2 66.Kc6 Qg2 67.Qh8 Kg6 68.b8Q Qf3 69.Kc5 Qe3 70.Qd4 Qa3 71.Kd5 Qf3 72.Qe4 Qf5 73.Kd4 Qe4 74.Ke4+–) 58.Qc7 Qb1 59.Kf2 Qb2 60.Ke3 (better is 60.Kg3+–) 60...Qb3 61.Ke4 Qe6 62.Kd4 Qf6 63.Kd5 Qf5 64.Qe5 Qd3 65.Kc6 Qc2 (65...Qa6 66.Kc7 Qa7 67.Qf6 Kh7+–) 66.Kd7 Qa4 67.Kd8 (67.Kd8 Qc2 68.Qd6 Kg7 69.Qc7 Qc7 70.Kc7+–) 1–0. Pietrzak,Janusz – Ewert,Jerzy, corr 1AMM Poland, 1992.

5.c4 0–0

6.Qb3 c5 7.Nc3 d6 8.d4 Bf5 9.Nge2 Bg6 (9...Nbd7 10.a3 Ba5 11.Rd1+=) 10.Nf4 a5 11.0–0–0 (11.dc5 dc5 12.Rd1 Nbd7=) 11...a4 12.Qc2 (12.Na4 Qa5 13.Ng6 fg6=) 12...cd4 13.ed4 (13.Ng6 d3 (13...fg6?! 14.Ne4 de3 15.Nf6 gf6 16.fe3=) 14.Bd3 ed3 15.Qd3 fg6–+) 13...a3 14.Ba1 Bc3 (14...Bf5 15.Ncd5 Nd5 16.Nd5=) 15.Bc3= Ng4 (15...d5 16.Bb4 Re8 17.Ng6 fg6 18.Re1=) 16.Ng6 Qg5 17.Bd2 Qg6 18.Be3 (18.f3 Nf2 19.Rg1 Nd1 20.Kd1 Re8–+) 18...Ne3+= 19.fe3 Nd7 20.g3 Nb6 (20...Rac8 21.Kb1+=) 21.Qb3 (21.Bg2 f5+=) 21...Rfc8 22.Kb1 h6 23.Be2 d5 (23...Qe6 24.Rc1+=) 24.c5= Na4 25.Rc1 b6 (25...Qe6!?=) 26.c6 Qd6 27.Rhf1 g6 (27...Rc7!?+=) 28.h4+/– Nb2 29.Rc2 (29.h5 Rc7+/–) 29...Rc7+= 30.g4 Kg7 (30...Rac8 31.g5 Kg7 32.Bg4+/–) 31.g5+/– Raa7 (31...hg5!? 32.hg5 Rh8+/–) 32.gh6 White gets the initiative 32...Kh6 33.h5 f5? (33...gh5 34.Rh1 Kg7+–) 34.hg6+– Qe6 (34...Kg6 35.Rf4+–) 35.Qb4 (35.Rg1 Kg7+–) 35...Kg7 (35...Kg6 36.Qf8 Ra5 37.Rg1 Kh7 38.Rh1 Kg6 39.Bh5 Kh7 40.Bf7 Qh6 41.Rh6) 36.Rh1 (36.Rg1 Ra8+–) 36...Ra4 (36...Qg6 37.Qd2+–) 37.Qe1 Nd3 (37...Qg6 38.Rg1 f4 39.Rg6 Kg6 40.Qg1 Kf6 41.Qh2+–) 38.Qh4 (better is 38.Bd3 ed3 39.Rg2 Qe4+–) 38...Rb4 39.Ka1 Qg6 (39...Qe7 40.Qh8 Kg6 41.Bh5 Kg5 42.Rg2) 40.Qh8 (40.Qh8 Kf7 41.Bh5 Rb1 42.Kb1+–) 1–0. Furlepa,Zdzislaw – Ewert,Jerzy, corr 1AMM Poland, 1991.

6.Nc3 c6 7.Qb3 Bc3 8.Qc3 d5 9.cd5 cd5 10.f3 Bf5 11.g4 d4?? 12.Qd4+– Qd4 13.Bd4 Bg6 14.Bg2 Nbd7 15.Ne2 b6 16.h3 Rac8 17.f4 h5 18.f5 Bh7 19.g5 Ne8 20.Be4 Nd6 21.Bc6 Nb8 22.Be5 Nf5 23.Bb8 Rb8 24.0–0 Rbd8 25.Rad1 Ne7 26.Nd4 Bd3 27.Rf2 Ng6 28.Rc1 a6 29.a4 Ne5 30.Rc3 a5 31.Bg2 Bg6 32.Nc6 Nc6 33.Bc6 Rd6 34.d4 Rfd8 35.Kh2 f6 36.gf6 gf6 37.Rc1 Kf7 38.Rf4 Re6 39.Rc3 f5 40.Kg3 Rh8? 41.e4 Kf6 42.e5 Kg5 43.h4 Kh6 44.Re3 Kg7 45.d5 1–0. hertford (2115) – smart tiger (1660), ChessWorld.net, 2003.

6.Nc3 Re8 7.Qb3 c5 (7...Ba5 8.Qa3 b6 9.c5+=) 8.Nge2 (8.bc6 Nc6 9.f3 Bc5+=) 8...d6+= 9.h3 Ba5 (9...a6 10.a3 Ba5 11.Rb1+=) 10.Nf4= Bc7 (10...a6 11.Ncd5 Nd5 12.Nd5 ab5 13.Qb5+=) 11.g4 (11.Be2 Nbd7=) 11...h6 (11...Ba5 12.Bg2 Bc3 13.Bc3=) 12.Rg1 (12.d3 Ba5=) 12...Nbd7 13.0–0–0 (13.Bg2 a6=) 13...Nb6 (13...a6 14.d3+=) 14.g5 (14.d3 a6=) 14...hg5 15.Rg5 Nh7 (15...Re5 16.Rg3 d5 17.Ncd5 Nbd5 18.Be5 Be5 19.cd5 a6+/–) 16.Rg3+= Bf5 (16...a6 17.d3 ab5 18.Ne4+/–) 17.Ncd5 (17.d3 ed3 18.Ncd5 g6+–) 17...Re5? (17...g6!?+/–) 18.Nb6 (18.d3 Nd5 19.Nd5 Nf6+–) 18...ab6 19.Be5 (19.d3 Qh4+–) 19...de5 20.Nd5 Nf6 21.Be2 (21.Nc7 Qc7 22.d3 Qe7+–) 21...Nd5+/– 22.cd5 Bd6 23.Rdg1 g6 24.a4 (24.Kd1 Qd7+/–) 24...Qf6 (24...Qd7 25.Qc4+/–) 25.Qc4 Kf8 26.Bd1 Ke7 (26...Ke8 27.Bc2+=) 27.Bc2 Rh8 28.Be4 White gets the initiative 28...Be4 29.Qe4 Qf2 30.Qg4 Qf5 31.e4 Qh5 (31...Qg4 32.hg4 (worse is 32.Rg4 Ra8+/–) 32...Ra8 33.Ra3+–) 32.Rf1 Qg4 33.hg4 g5 (33...c4 34.Rc3 Rh4 35.Rcf3+–) 34.Rgf3 Rh7 35.Rf5 Rg7 36.Rf6 Rh7 1–0. Rosikiewicz,Wieslaw(+) – Ewert,Jerzy, corr 1AMM Poland, 1991.

6.Ne2 d5–/+ 7.Nf4 c6 8.cd5 Nd5 9.Nd5 Qd5 10.bc6 (10.Nc3 Qe6+=) 10...Nc6–/+ 11.Nc3 Bc3 12.Bc3 Ne5 (12...Rd8 13.Qb3–/+) 13.Be2 (13.Be5 Qe5 14.d4 Qa5 15.Qd2 Qg5=) 13...Nd3–/+ 14.Bd3 Qd3 15.f3 Be6 (15...Bf5!?–/+) 16.fe4= f5 (16...f5 17.ef5 Rf5=; 16...Qe4 17.0–0+=). Zamarski,Ryszard – Ewert,Jerzy, corr 1AMM Poland, 1991.

4.b5 b6

5.c4 a6 6.Nc3+=.

5.c4 Bc5 6.Ne2 0–0 7.Ng3 h6 8.Nc3 Bb7= 9.Be2 a6 10.a4 a5 11.Qc2 Re8= 12.0–0 d5 13.cd5+/– Bd5 14.Nd5+– Qd5 15.Bc4 Qd7? 16.Bf6 gf6 17.Ne4 Kg7 18.Nc5 Qg4 19.Nd3 Re4 20.Nf4 Qc8 21.Qe4 (21.Qe4 Nd7 22.d4+–) 1–0. pumpkin (2085) – pede, net–chess.com, 2002.

5.c4 d6 6.d4 (6.d3 a6=) 6...ed3 (6...a6!?=) 7.Bd3 (better is 7.Qf3 d5 8.Bf6 (worse is 8.Bd3 Bg4 9.Qf4 dc4=) 8...Qf6 9.Qf6 gf6 10.cd5+=) 7...Qe7 (better is 7...Nbd7!?+=) 8.Qf3+/– d5 (better is 8...c6 9.bc6 Na6 10.Bf6 Qf6 11.Qf6 gf6+–) 9.h3 (9.Bf6 gf6 10.cd5 Qe5+/–) 9...Qb4? (better is 9...Nbd7 10.cd5 Ne5 11.Be5 Qe5=) 10.Bc3+– Qc5 (10...Qd6 11.Bf6 gf6 12.Nc3+–) 11.Bd4 (11.Bf6 gf6 12.Qd5 Qd5 13.cd5 Bb7+–) 11...Qb4 12.Nd2 (better is 12.Nc3 Nbd7 13.cd5+/–) 12...c5?? (better is 12...Nbd7 13.cd5 Nc5 14.Bc5 Qc5+/–) 13.Bf6+– gf6 (13...Bb7 14.a3 Qa5+–) 14.Qd5 (14.cd5?! Nd7 15.Rb1 Qa5+–) 14...Qb2 (14...Bd6 15.Qa8 Qc3 16.Rd1+–) 15.Rb1 (15.Rd1 Bd6+–) 15...Qa2 16.Qa8 Bd6 17.Ngf3 (17.Ne4 Qa5 18.Kf1 Bc7 19.Nf6 Ke7 20.Nd5 Kd8+–) 17...0–0 (17...Be6 18.Ne4 Bc7 19.0–0+–) 18.Ke2 (better is 18.Qd5 Rd8 19.Bh7 Kf8 20.Bf5 Bf5 21.Qf5+–) 18...Be6 (18...f5+–) 19.Ra1 Qb2 20.Rhb1 Qc3 21.Ne4 Nd7 22.Qa7 (22.Qf8 Kf8 23.Nc3 Bb8+–) 22...Ne5 23.Nc3 (23.Nc3 Nd3 24.Kd3+–) 1–0. Poweleit,Andy – Offermann,Dietmar, FC0031, 2001.

5.c4 g6 6.a4 Bg7 7.a5 0–0 8.ab6 cb6 9.h3 a6 10.Nc3 Bb7 11.Nge2 ab5 12.cb5 d5 13.Ra8 Ba8 14.Qa1 Nbd7 15.Nd4 Nc5 16.Qa7 Nfd7 17.Nc6 (better is 17.Na4!?+=) 17...Qe8?? (better is 17...Bc6 18.d4 Ba8 19.dc5 Nc5–/+) 18.Ba3+= 1–0. aleksandras19 – sihrtogg, internet, 2013.

5.Bc4 d5 6.Bb3 Bd6 7.Ne2 Be6 8.Nd4 Qd7 9.Ne6= Qe6 10.Nc3 Nbd7 11.d3 ed3 12.Qd3 Nc5 13.Qd2 Nce4?? 14.Ne4+– Ne4 15.Qd5 Qd5 16.Bd5 Nf2 17.Kf2 0–0–0 18.Rhd1 Rhf8 19.Bg7 Rg8 20.Bf6 Rg6 21.Bd8 Kd8 22.Bf7 Rf6 23.Kg1 Rf7 24.e4 Re7 25.Re1 Bc5 26.Kh1 Bd4 27.Rad1 Rd7 28.e5 Ke7 29.Re4 Bc5 30.Rd7 Kd7 31.Rh4 Ke6 32.Rh7 Ke5 33.Rc7 Kd4 34.Ra7 Kc4 35.Rd7 Kb5 36.g4 Be3 37.Kg2 Kc6 38.Rd3 Bg5 39.Kf3 Kc5 40.Ke4 b5 41.Kf5 Bc1 42.g5 Bb2 43.g6 b4 44.Ke6 Bg7 45.Kf7 Bc3 46.g7 Bg7 47.Kg7 (47.Kg7 Kc4 48.h4+–) 1–0. TriAngel – fisher_fries, ICC, 1999.

5.d3= d5 6.Nd2 (6.de4 Ne4 7.Nf3 a6=) 6...Nbd7 (6...a6 7.de4 de4 8.ba6+=) 7.de4 (better is 7.c4=) 7...Ne4? (better is 7...de4 8.Bc4 Bb4=) 8.Ne4+– de4 9.Qd5 Rb8 10.Qe4 Qe7 11.Qe7 Ke7 12.Nf3 f6 (12...Bb7 13.Nd4+–) 13.Bc4 (13.Rd1 Bb7+–) 13...Bb7 14.Nd4 (14.Rd1 Nc5+–) 14...Ne5+/– 15.Nf5 (15.Ba3 Ke8 16.Bf8 Kf8+/–) 15...Ke8 16.Be5 fe5 17.0–0 (17.f3 g6 18.Ng3 c6+/–) 17...g6 18.Ng3 Rd8 (18...c6 19.Rad1+/–) 19.Rad1 Bb4 (19...c6 20.a4+/–) 20.Rd8 Kd8 ½–½. Krueger,Bernhard – Zitzwitz,Bodo, Baunatal op 4th, 1998.

5.d4 a6 6.d5 =+.

5.d4 Bb7 6.c4 (6.Nh3 a6+=) 6...a6 7.Nh3 Bb4 8.Nc3 0–0 9.Be2 ab5 10.cb5 Nd5 11.Qc1 c5 (11...Nc3 12.Bc3 Ba3=) 12.dc5 (12.0–0!? cd4 13.Nd5 (worse is 13.Ne4 de3 14.fe3 Qe7=) 13...Bd5 14.Bd4+=) 12...Qf6–/+ (12...bc5?! 13.0–0 Nc3 14.Bc3=) 13.Kd2 bc5 The passed pawn on b5 will become decisive later (13...Qg6 14.a3 Ba5 15.Bc4 Qg2 16.Bd5 Bd5 17.Qf1 Qf1 18.Rhf1+=) 14.a3+= Ba5 15.Qc2 Rc8 16.Rhc1 (16.Rhb1 Qd6 17.Ke1 Qh2–/+) 16...Nc3 17.Bc3 Qd6 18.Ke1 Bc3 19.Qc3 Qh2 20.Bf1 d6 (20...Ra4!?–/+) 21.a4= Nd7 (21...Qh1 22.Rd1+=) 22.a5 Ne5 (22...Rab8 23.Rcb1=) 23.a6+= Bd5 24.Nf4 (24.b6 Rcb8 25.Nf4 Bc6+=) 24...Be6 (24...Qg1 25.Ra4=) 25.b6+= Re8 (better is 25...Rcb8!? 26.Rcb1 Qg1+=) 26.Rcb1 (26.Ne6?! fe6 27.b7 Ra7+–) 26...Reb8? (better is 26...Nc6!?+/–) 27.b7 (27.Ne6?! fe6 28.b7 Ra7+–) 27...Ra7 28.Qa5 (28.Qa5 Qg1 29.Qc7+–) 1–0. Kossobudzki,Robert – Frysiak,Adam, corr 2AMM Poland, 1993.

5.Ne2 Bb4 6.Ng3 d5 7.c4 Bb7 8.cd5 Bd5 9.Nc3 c6 10.a3 +=.

5.Ne2 c5 6.d4 ed3 7.Qd3 Bb7 8.a4 Be4?? (better is 8...d5=) 9.Bf6+– Bd3 10.Bd8 Be2 11.Be2 (11.Be2 Kd8 12.Bf3+–; 11.Ke2?! Kd8 12.a5 d5+–) 1–0. Trkn – guest3590, ICC, 2004.

5.Ne2 Be7 6.Ng3 a6 7.ba6 Na6 8.d3 ed3 9.Bd3 Bb7 10.Nf5 =.

5.f3 Bb7 6.fe4 (6.Nc3 a6=) 6...Ne4 7.Nf3 d5 (7...a6 8.Nc3=) 8.c4 (8.Be2 a6=) 8...Nd7 (8...a6 9.Nc3+=) 9.cd5 (9.Nc3 Ndf6=) 9...Ndf6 (9...Bd5 10.Nc3 Nc3 11.Bc3=) 10.Nc3 (10.d3 Bb4 11.Ke2 Bd5+–) 10...Nc3= 11.Bc3 Bd5 (worse is 11...Qd5 12.Bf6 gf6 13.Rc1+/–) 12.Be2 Bd6 (12...a6 13.0–0=) 13.0–0+= 0–0 14.Qc2 Re8 (14...Ne4 15.d3 Nc3 16.Qc3=) 15.Qb2 (15.Bc4 Bc4 16.Bf6 Qf6 17.Qc4 a6 18.ba6 Qe6=) 15...Nh5 (15...Re6 16.Ng5 Re8 17.Bf6 gf6 A) 18.Rf6? Be5 19.Qc2 Qf6 (19...Ba1?? 20.Qh7 Kf8 21.Rf7 Bf7 22.Qf7) 20.Qh7 Kf8–+; B) worse is 18.Qf6 Be7 19.Qf4 Bg5–+; C) 18.Nh3+/–) 16.Rf2 (16.Rac1 c5+=) 16...Qe7 (16...c5 17.g4 Nf6 18.Bf6 gf6 19.Raf1+=) 17.Raf1 Qe6 (17...c6 18.bc6 Rac8 19.Qb5+/–) 18.Nh4 Nf6 (18...Qe4!? 19.Nf5 Nf4 20.Nd6 Nh3 21.Kh1 Nf2 22.Rf2 Qh4=) 19.Bf6 gf6 20.Bf3 Be5 (better is 20...a6!? 21.Bd5 Qd5+/–) 21.d4+– Bd6 (21...Bf3 22.Rf3 (22.gf3?! Bd6+/–; worse is 22.Nf3 Bd6+/–; 22.de5?! Bd5+=) 22...Bd6 23.Nf5+–) 22.Bd5 Qd5 23.Nf5 Re4 (23...a6 24.ba6 Re6 25.Qe2+–) 24.Nd6 (24.Nh6 Kg7 25.Rf6 Bh2 26.Kh2 Rh4 27.Kg1 Rh6 28.Rf7 Qf7 29.Rf7 Kf7+–) 24...cd6 25.Rf5 (worse is 25.Rf6 Re3 26.Qf2 Rae8+/–) 25...Qc4 26.Qf2 Re6 (26...d5 27.Qg3 Kh8 28.Qd6+–) 27.Rf6 Rf6 28.Qf6 Re8 29.Qd6 Qb5 30.Qf6 (30.Qg3 Kh8+–) 30...Qc4 (30...Qd5!?+/–) 31.Qg5+– Kf8 32.Qf5 (32.a3!? Qd3 33.Qh6 Kg8+–) 32...Qe6 33.Qh7 (33.Qh7 Qe3 34.Kh1+/–) 1–0. Cassola,Aldo Guillermo – Vitkevicius,Juozas, CiF, 1994.

5.f4 Bb7 6.g4 h6 7.h4 d5 8.Nh3 Nbd7 9.g5 Ng8 10.a4 hg5 11.hg5 Nc5 12.Nf2 Rh1 13.Nh1 Qd7 14.Qh5 g6 (14...Ne7 15.Bh3 Qd6 16.Qh8+=) 15.Qh8+= Ne7 16.Bg7 0–0–0 17.Bh3 Ne6 18.Bf8 Nf5 Black intends d4 19.Bf5 gf5 20.Nc3 (better is 20.Qf6 Rf8 21.Qf5+/–) 20...d4+= 21.Ne2 de3 22.de3 Qd2 23.Kf2 Rf8 (23...Nf4 24.Nhg3 (worse is 24.ef4 e3 25.Kg3 Qe2 26.Kh3 Qg2 27.Kh4 Qh2) 24...Ne6 25.Qc3 Qc3 26.Nc3 Rf8 27.Nf5+=) 24.Qc3= Qc3 25.Nc3 Rh8 26.Ng3 (26.Rc1 c6=) 26...Rh2+= 27.Kf1 (27.Ke1!?+=) 27...Rc2–/+ 28.Nce2 Bd5 29.Rc1 (better is 29.Nf5!? Bc4 30.Nfg3+=) 29...Rc1–+ 30.Nc1 Bc4 31.Ke1 Nc5 32.Nf5 Na4 33.Ng3 (33.Nh6!?–/+) 33...Nc5–+ (33...Bb5?! 34.Ne4 Bc6 35.Nd2–/+) 34.Kd2 Kd7 35.f5 Bb5 36.Kc3 a5 37.Nh5 (37.Nb3 Nb3 38.Kb3 Bd3–+) 37...Ke7 38.Nf4 White prepares the advance g6 38...a4 39.f6 (39.Kd4 c6–+) 39...Kd6 40.Na2 Ne6 41.g6 (41.Ne6 Ke6 (worse is 41...fe6 42.g6 Be8 43.f7 Bf7 44.gf7=) 42.Kb4 Bd7–+) 41...Nf4 (41...Nf4 42.ef4 fg6–+) 0–1. Katalymov,Boris N – Suetin,Alexey S, Kislovodsk, 1967.

5.f4 d5 6.d3 Be7 7.de4= de4 8.Nc3 Bb7 9.Bc4 0–0 10.Nge2 Nbd7 11.0–0 Nc5 12.Ng3 Qd1 13.Rad1 Rad8 14.Ba3 Rd1 15.Rd1 Rd8 16.Bb2 Rd1= 17.Nd1 g6 18.Nf2 c6 19.bc6 Bc6=+ 20.h3 b5 21.Be2 a5 22.c4 b4 23.Kf1 a4 24.a3 b3–/+ 25.Kg1 h5 26.Kh1 Nfd7 27.Kg1 Bh4 28.Kh2 Bf6 29.Kg1?? Bb2 0–1. valpa – Winkler, playchess.de, 2002.

5.g3 Bb7 6.Bg2 Bc5 7.Ne2 0–0 8.Nf4 d5 9.0–0 Nbd7 10.d4 ed3 (10...Bd6!?=+) 11.Qd3= Be7 12.Nd5?? (better is 12.Rd1+=) 12...Nd5 13.Bd5 Bd5?? (better is 13...Nc5 14.Bb7 Nd3 15.cd3 Qd3–+) 14.Qd5+/– Qe8 15.Qf3 Nf6 16.Nd2 (better is 16.a4+/–) 16...Qb5=+ 17.Rab1 Qd7 18.Ne4 Ne4 19.Qe4 Bd6 20.Rfd1 Rae8 21.Qh4 Re6 22.Qg5 Rg6 23.Qh4 Qe6 24.c4 Re8 25.a4 Bc5 26.Bd4 Bd4 27.Qd4 h5 28.c5 Rg4 29.Qd5 Qg6 30.cb6 cb6 31.a5 Rge4 32.ab6 ab6 33.Rdc1 h4 34.Rc6 Qg4 35.Qd6 hg3 36.Qg3 Qe2 37.Rh6?? Qd3 38.Rf1 Qd5 (39.Rb6 R8e6 40.Re6 Re6 41.Qb8 Kh7=). stoker – amaj7, Live Game Caissa's Web, 2004.

5.c4 Bb7

6.Nc3 a6 7.Nge2=+.

6.Nc3 c6 (6...a6 7.d3+=) 7.a4 (7.d3 Bb4=) 7...Qc8 (7...Bb4!?=) 8.f3+= Bc5 (8...cb5!? 9.ab5 ef3 10.Nf3 d5+=) 9.Ne4+/– 0–0? (better is 9...Ne4 10.fe4 0–0+/–) 10.Nf6+– Kh8?? (10...gf6 11.f4 f5+–) 11.Qc2 Re8 (11...g6 12.Qc3 a5 13.Nh7 f6 14.Nf6 Bb4 15.Qd4 Bd2 16.Kd2 Rf7 17.Ne8 Rf6 18.Qf6 Kg8 19.Qg7) 12.Qh7 1–0. GuestTYYZ – XIAOJUNXI, freechess.org, 2017.

6.Nc3 d6 7.f4 (7.d4 Be7=) 7...Nbd7 8.g4 Nc5 9.g5 Nd3 10.Bd3 ed3 11.Nf3 Ne4 12.Rf1 Qd7 13.Ne4 Be4 14.Ng1 (14.a3 a6 15.Nd4 d5 16.cd5 ab5–/+) 14...h6 15.f5 (15.Qh5!?–/+) 15...hg5 (15...Bf5 16.Qf3 d5 17.Qf5 Qf5 18.Rf5 dc4 19.Rc1 hg5 20.Rc4+–) 16.Qg4 d5 17.Qg5 Rh2 18.f6 Rg2 19.Qe5 Kd8 20.0–0–0 (20.Qh5 gf6 (20...dc4?! 21.fg7 Be7 22.Nh3=) 21.Qh8 Qd6–+) 20...g6 21.Nf3 Kc8 (21...a6 22.Ng5 Bd6 23.Ne6 Kc8 24.Nf8 Bf8 25.Rg1–+) 22.Ne1 Rg4 0–1. Nordin,Nils – Hansson,R, corr SSKK 1–428, 1989.

6.d3 Bb4 7.Bc3 Qe7 8.Bb4 Qb4 9.Qd2 Qd2 10.Nd2 ed3 11.Ngf3=.

6.d3 ed3 7.Nf3= d6 (7...Bb4!? 8.Nbd2 Ne4=) 8.Bd3+= Nbd7 9.Nbd2 Be7 10.0–0 Nc5 11.Bc2 (11.Bf5 a6+=) 11...0–0 (11...a6 12.Bf5=) 12.a4 (12.Nb3 a6+=) 12...a5 (12...a6 13.Bf5=) 13.Re1 Nfe4 (13...Re8 14.Qb1=) 14.Ne4 Be4 (14...Ne4 15.Nd4+=) 15.Be4 Ne4 16.Qd4 (16.Qd3 Nc5 17.Qf5 Qc8 18.Qc8 Rac8=) 16...Bf6 (16...Bf6 17.Qe4 Bb2+=). Jacobsen,Jan – Rohde Jensen,Kristian, corr, 1968.

5.c4 d5

6.Qc2 Be6 7.d3 dc4 8.dc4 c6 9.a4 c5 (better is 9...Bb4!? 10.Nd2 a6+=) 10.Nd2+= Qc7? (better is 10...Bf5!?+=) 11.Ne4 Bf5?? (better is 11...Nbd7+–) 12.Nf6 gf6 13.Qf5 Bd6 (13...Nc6 14.Qe4 Be7 15.a5+–) 14.Qf6 (better is 14.Bf6 Rg8 15.Qe4 Kf8 16.Qa8 Be5 17.Be5 Qe5+–) 14...Rg8 15.Nf3 (better is 15.Rd1 Nd7 16.Qd6 Qd6 17.Rd6 a6+–) 15...Nd7 16.Qh4 h6 (16...Rd8 17.Qe4 Be7 18.Qh7+–) 17.Qh6 (better is 17.Qe4 Kf8 18.Qa8 Qb8+–) 17...0–0–0 18.g3 Ne5 19.Ne5 Be5 20.Be5 Qe5 21.Rd1 (better is 21.Bh3 Kc7 22.Qf4 Qf4 23.gf4+–) 21...Qc3= 22.Ke2 Qc2 (22...Qc4!? 23.Kf3 Qg4 24.Kg2 Qe4 (worse is 24...Qd1 25.Bc4 Qd7 26.Qf6+/–) 25.Kh3 Rd1 26.Qc6 Qc6 27.bc6 c4+=) 23.Ke1?? (better is 23.Kf3 Qd1 24.Kg2 Qa4 25.Be2+/–) 23...Qd1# 0–1. jaare – granit2008, internet, 2013.

6.cd5 Qd5 (6...Nd5 7.d3 ed3 8.Qd3 Bb4 9.Nd2+=) 7.Nc3 (7.Bf6 gf6 8.Nc3 Qe6+=) 7...Qd6 (7...Qd7 8.d3+=) 8.Nge2 (8.d3 ed3 9.Bd3 a6+=) 8...Be7 (8...Nbd7 9.Nf4=) 9.Nd4 (9.Ng3 Qe6+=) 9...0–0 10.Be2 (better is 10.Qc2 Bb7 11.d3=) 10...Bg4?? (better is 10...c5 11.bc6 Nc6 12.Nc6 Qc6=) 11.Bg4+– Ng4 (11...Nbd7+–) 12.Qg4 f5 (12...Qg6 13.Qe4 Qe4 14.Ne4+–) 13.Nf5 Qd7 (13...Qf6 14.Nd1 Qg5 15.Qe4 Qf5 16.Qa8 Qb5 17.Rc1+–) 14.Nh6 (14.Qg7) 14...Kh8+– 15.Qd7 (15.Ne4 Qg4 16.Ng4 a6+–) 15...Nd7 16.Ne4 Nc5 (16...a6 17.ba6 Ra6 18.g4+–) 17.Nc5 Bc5 18.0–0 (18.Ke2 a6 19.a4 Ra7+–) 18...Rae8 19.f4 (19.d4 Bd6 20.Ng4 a6 21.ba6 Kg8+–) 19...Re6 (19...Re4 20.Rfc1+–) 20.Ng4 h5 (20...c6 21.bc6 Rc6 22.Rac1+–) 21.Ne5 Kh7 (21...Bd6 22.d4 Ra8 23.d5+–) 22.d4 Bd6 23.Rf3 1–0. DEFFM – GuestFXZL, freechess.org, 2016.

6.Bf6 Qf6 (worse is 6...gf6 7.Nc3+/–) 7.Nc3 dc4 8.Ne4 Qe5+=.

5.c4 Be7

6.a4 0–0 7.d4 a5 8.d5 c5?? (8...Bb4!? 9.Nc3 c6+=) 9.Qc2?? (better is 9.d6+–) 9...d6 10.Ne2 Bf5 11.Nbc3 Nbd7 12.Ng3 Will e4 fall? 12...Bg6 13.Nge4 Ne4 14.Bd3?? (14.Ne4 f5 15.Nc3 f4+=) 14...Ndf6?? (better is 14...Nc3 15.Bg6 fg6 16.Bc3 Bf6–+) 15.Ne4+/– Ne4 16.Be4 Be4 17.Qe4 Bf6 18.Rb1 Bb2 19.Rb2 Qf6 20.Qc2 Rfe8 21.0–0 Re5 22.Qe2 Rae8 23.Rb3 Re4 24.h3 Qh4 25.f3?? Rc4–/+ 26.e4 Ra4 27.Re3 Qf4 28.Rf2 Qe5 29.Qc2 Ra1 30.Rf1 Rf1 31.Kf1 Qh2 32.Kf2 Qe5 33.f4?? Qd4 34.Kf3 Kf8?? 35.g4 g6 36.h4 f5! 37.gf5 gf5 38.Qd3?? Qd3 39.Rd3 fe4 (39...fe4 40.Ke3 ed3 41.Kd3 a4–+) 0–1. jura1946 – diego7314, internet, 2012.

6.Nc3 0–0 7.Nge2 Bb7 8.Ng3 c6 9.a4 cb5 10.ab5 Bb4 11.Qc2 e4 becomes the focus of attention 11...Bc3 12.Qc3 d5 13.Nh5?? (better is 13.Nf5+=) 13...d4?? (better is 13...Nh5 14.Ba3 Re8–+) 14.Nf6+– Qf6 15.Qd4 Qd4 16.Bd4 Nd7 17.Be2 f5 18.0–0 Nf6 19.f3 ef3 20.Bf3 Bf3 21.Rf3 Ne4 22.d3 Ng5 23.Rg3 h6 24.e4! f4 (24...fe4 25.de4 Passed pawn) 25.Rg4 Ne6 26.Be5 f3 (better is 26...g5 27.h4 h5 28.Rg5 Ng5 29.hg5 Rf7+–) 27.gf3 Rf3 28.d4 g5 29.h4 Kf7 30.d5 Nf4 31.hg5 Nd3 32.g6 Kg8 33.Bd4 Rf4 34.Rf4 Nf4 35.g7 Ne2= 36.Kf2 Nd4 37.Ke3?? Nc2–+ (37...Nc2 38.Kf4 Na1–+) 0–1. jura1946 – diego7314, internet, 2012.

5.d3 Bb7

6.Nd2 ed3 7.cd3 a6 8.a4 Bb4 9.Ngf3 c5 10.bc6 Nc6 11.Be2 Rc8 12.0–0 0–0 13.Qb3 Qe7 14.Rab1 Rfe8 15.Qc4 Ba5 16.Qf4 Nd5 17.Qg3 Threatening mate... how? 17...f5 18.Nc4 f4 19.Qg4 fe3 20.Nh4 (20.Nd6! ef2 21.Rf2+=) 20...Nc3 (20...h5 21.Qf3 Nc3 (21...Qh4? 22.Qd5 Re6 23.fe3+–) 22.Bc3 Bc3 23.Qd5 Qe6 24.Qe6 A) 24...de6? 25.fe3 (25.Rb6?! ef2 26.Rf2 Rc7=) 25...Bf6 26.Bh5+–; B) 24...Re6 25.fe3 Rc7 26.Bh5 Ne5+/–) 21.Bc3 ef2 22.Rf2 Opening the f–file gets White a lot of play 22...Bc3 23.Nf5 Qf6 24.Rb6 Rf8 25.Rf1 (better is 25.Rb7!? Bd4 26.Ncd6 Bf2 27.Kf2+/–) 25...Rb8 26.Ncd6 Nd4 27.Nf7 Do you see the mate threat? 27...Nf5 28.Rf6 Bf6 29.Rf5 Rf7 30.Bf3 d5 31.h4 (31.Bd5?? Bd5 32.h3 Be6–+) 31...Rd8 32.Qf4 Rfd7 33.h5 Rd6 34.h6 (34.h6 Bc8 35.Rh5+/–) 1–0. Taulien,Hans_Juergen (2350) – Leistner,Axel_Eberhard (2100), remoteschach.de, 2003.

6.de4 Ne4 7.Nf3 a6 8.Bd3 ab5 9.0–0 b4 10.a3 Ng5 11.Be2 Rg8 (11...Nc6 12.ab4 Ra1 13.Ba1 Nb4 14.Nbd2+=) 12.Ng5 Qg5 13.Bf3 Nc6 14.ab4 Ra1 15.Ba1 Bb4 16.c4 Qh4 17.Nc3 Bc3 18.Bc3 Qc4 19.Qc2 g6 20.Rc1 Qh4 21.Qb2 Ke7 22.Be5 Rc8 23.Bg7 Rg8 24.Rd1 Rg7 25.Qg7 h5 26.h3 Qa4 27.Qb2 Qa5 28.Rd5 Qa8 29.Rd3 Qa5 30.Ra3 Qc5 31.Ra4 (31.Ra1 f6+=) 31...f6 32.Rf4 Qd6 33.Qb1 f5 34.Qb2 Kf7 35.Qh8 Qf6 36.Bd5 Ke7 37.Qh7 Kd6 38.Bf3 b5 39.Be2 Ba6 40.g4 hg4 41.hg4 Ne7 42.gf5 gf5 43.Rd4 Ke6 44.Rh4 Qa1 45.Kg2 d6 46.Bf3 b4 (46...Kd7 47.Qf7 b4 48.Rh7+–) 47.Rb4+= Bd3 48.Qh6 Kd7 49.Qh4 Qg7 50.Kh3 Qg1 51.Bg2 Be2 52.Kg3 Bd3 53.Qh2 Qh2 54.Kh2 c5 55.Rb7 Ke6 56.Kg1 Be4 57.Ra7 c4 58.Kf1 Nc6 59.Rc7 Kd5 60.f3 Bd3 61.Ke1 f4 62.ef4 Nd4 63.Bh3 Nf3 64.Kf2 Nd4 65.Bg2 Ke6 66.Ke3 Nf5 67.Kd2 d5 68.Bh3 Kd6 69.Rc8 Ne7 70.Rd8 Kc5 71.Rf8 White prepares f5 71...d4 72.f5 Nc6 73.f6 Bg6 74.f7 c3 75.Kd1 (75.Ke1!? d3 76.Bf1 d2 77.Kd1=) 75...d3= 76.Rd8 Bh5 77.Bg4 Bf7 (77...Bg4 78.Kc1 Nd8 79.f8Q Kb5 80.Qd8 d2 81.Qd2 cd2 82.Kd2=) 78.Rd3 ½–½. Ahrens,Gerhard (2235) – Hoetker,Michael (2140), remoteschach.de, 2007.

6.de4 Ne4 7.Nf3 Qe7 8.Be2?? (better is 8.Be5=) 8...Qb4–+ 9.Nbd2 Nd2 (9...Qb2 10.Ne4 Be4 11.Qd4 Bb4 12.Kf1 Qd4 13.ed4–+) 10.Nd2 Qb2 11.0–0 Be7 12.Nf3 (12.a4 a6–+) 12...Bf6 (12...a6 13.a4–+) 13.Nd4 0–0 14.a4 c5 15.Rb1 Qa2?? (15...Qc3 16.Rb3 Qa5–+ (16...cd4 17.Rc3 dc3 18.Bf3 Bf3 19.Qf3+/–)) 16.Ra1–/+ Qb2 17.Rb1 Qc3 (17...Bd4 18.Rb2 Bb2 19.Bf3 Bf3 20.Qf3+/–) 18.Nf3 (18.Rb3 Qa5 (18...cd4 19.Rc3 dc3 20.Bf3 Bf3 21.Qf3+/–; 18...Bd4 19.Rc3 Bc3 20.Bf3 Bf3 21.Qf3+/–) 19.Nf5 a6–+ (19...Qa4?! 20.Nd6–/+)) 18...Be4 (18...Re8 19.Nd2–+) 19.Bd3 Bd3 20.cd3 Qa5 (20...d5 21.d4 Rd8 22.dc5 bc5 23.Re1–+) 21.Qb3 (21.d4 c4–+) 21...a6 22.h3 ab5 23.ab5 (23.Qb5 Bd8 24.Ra1 Nc6–+) 23...d6 (23...Qa2 24.Qa2 Ra2 25.d4–+) 24.d4 (24.Qd5 Ra7–+) 24...Nd7 25.dc5 (25.Qd5 Rfd8–+) 25...dc5 0–1. Zaichenko,Andrey – Huxtable,Simon, FICGS, 2008.

5.Ne2 a6

6.a4 Bb4 7.Bc3 Bc3 8.Nbc3 =+.

6.a4 Bb4 7.Ng3 d5 8.Be2 ab5 9.ab5 Ra1 10.Ba1 =.

6.a4 Bb7 7.Ng3 (7.Nd4 Bb4=) 7...Bb4 (7...Bc5 8.Nh5 Nh5 9.Qh5=) 8.Nc3 (8.Nh5 Rg8=) 8...0–0 9.Be2 Re8 10.0–0 c5 11.f3 d5 12.fe4 de4 13.Bc4 ab5 14.Nb5 Nd5? (14...Bd2 15.Nf5 Be3 16.Ne3 Qd1 17.Rad1+–) 15.Qg4 (better is 15.Qh5!? Rf8 16.Ne4+–) 15...g6+/– 16.Nf5 (16…f6 17.Nfd6 Bd2 18.Nb7 Be3 19.Kh1+–) 1–0. Pegiel,Marek – Frysiak,Adam, corr 2. AMM, Poland, 1993.

6.Nf4 Be7 =+.

5.Ne2 Bb7

6.Nec3 a6=.

6.Nf4 a6 7.Nh5 Rg8 8.Nf6 gf6 9.Qh5 h6 10.Qh4 =.

6.Nf4 d5 7.Be2 (7.d3 a6=) 7...Nbd7 (7...a6 8.a4=) 8.0–0 (8.Bd4 a6+=) 8...Bd6 9.f3 (9.d3 a6=) 9...Be5 (9...a6 10.a4=) 10.Be5+= Ne5 11.d4 (11.fe4!? de4 12.Nc3=) 11...ed3+= 12.cd3 d4 13.e4 (13.Na3 de3 14.Nc2 c5+=) 13...Qe7 (13...a6 14.ba6 Ra6 15.Nh3+=) 14.g3 (14.Nh3+=) 14...0–0–0 (better is 14...a6!?–/+) 15.a4= h5 16.a5 g5 Black prepares the advance h4 (16...h4 17.g4=) 17.Ng2 (17.Nh3 h4 18.g4 Rhg8+=) 17...h4 18.g4 (18.gh4 gh4 19.h3 Rdg8=) 18...h3= 19.Ne1 Ng6 20.Nd2 (20.Qa4 Nf4 21.Rf2 Rhe8+=) 20...Nf4= (20...Nf4 21.Nc2 N6d5=). Urbanec,Miroslav – Vitasek,Emil, CS, 1969.

6.Nf4 Be7 7.Be2=.

5.Ne2 d5

6.Nd4 a6 7.a4+=.

6.Nd4 Bd6 7.c4 dc4 8.Bc4 0–0 9.Qb3 (9.d3 a6=) 9...Bb7 (9...a6 10.0–0+=) 10.a4 (10.0–0 a6=) 10...Nbd7 (10...a6 11.Nf5+=) 11.h3 (11.0–0 a6=) 11...Nc5 12.Qc2 Nd5 (12...Nd3 13.Bd3 ed3 14.Qd3 Bg2 15.Rg1=) 13.0–0= Qg5 14.Bd5 Bd5 (14...Qd5 15.Nc3 Qe5 16.f4+=) 15.Nc3 Qe5 Threatening mate: Qh2 16.g3 (16.f4 Qh5+=) 16...Bb7 (16...Bc4 17.Rfc1–/+) 17.Nce2 (17.Ba3 Nd3–/+) 17...Qh5 18.Kh2 Nd3 (18...a6 19.Qc3–/+) 19.Bc3 (19.Ba3 a6–/+) 19...Bc8 20.Ng1 Qg6 21.Nde2 (21.Nge2 a6–+) 21...Re8 (21...a6 22.f3–+) 22.f4 (22.f3 ef3 23.Rf3 Bb7–+) 22...ef3 (better is 22...a6–+) 23.Nf3? (better is 23.Rf3 Bb7 24.Rff1–+) 23...Bh3! 24.Nh4 (24.Kh3 Decoy theme: h3 24...Nf2 Discovered attack) 24...Qg4 (24...Bf1?! 25.Ng6 Be2 26.Nf4 Bf4 27.gf4=) 25.Qd3 Bf1 26.Rf1 Qh4 27.Kg1 (27.Kg2 Qa4 28.Nd4 Qa2–+) 27...Bg3 (27...Qa4 28.Qd5 Rf8 29.Bg7+=) 28.Rf3 (28.Kg2 Qh2 29.Kf3–+) 28...Qh2 29.Kf1 Qh1 30.Ng1 Bh2 31.Qd5 (31.Qf5 Qg1 32.Ke2 Qg6–+) 31...Qg1 32.Ke2 Qg6 33.Rf5 (33.Qf5 Qf5 34.Rf5 a6–+) 33...Rad8 (33...Red8 34.Qf3–+) 34.Qf3 Be5 (better is 34...c5–+) 35.Be5 Re5 36.Re5 Qd3 37.Kf2 Qd2 38.Kf1 (38.Kg3–+) 38...Qc1 39.Kg2 Qb2 (39...Qb2 40.Kh3 Qe5–+) 0–1. Kosina,Vladimir – Novak,Ivan, CSR op U26 Cihak, 1969.

6.Bf6 Qf6 7.Nbc3 Bb7=.

6.Ng3 Bd6 7.d3 (7.Nh5 Nh5 8.Qh5 Bf8+= 9.d3 ed3 10.Bd3+=) 7...0–0 (7...Bg4 8.Be2 Be2 9.Qe2 a6 10.Nh5=) 8.de4 Ne4 (better is 8...de4!? 9.Nd2 Bb7= 10.Bf6=) 9.Ne4+/– de4 10.Bc4 (better is 10.Qd4 Qf6 11.Qf6 gf6 12.Bf6+/–) 10...Qg5+= 11.g3 Nd7 (11...Rd8 12.Nd2–/+) 12.Nd2 (12.Qd5 Ne5 A) 13.Qe4? Bf5 (13...Nc4?! 14.Qc4 a6 15.a4+=) 14.Qf4 Qf4 15.Bf7 Rf7 16.gf4 Nc4–+; B) 13.Qa8 Nc4 14.Bc3=) 12...Nc5+= 13.Bd5?? (13.h4!? Qf5 14.g4 Qg4 15.Qg4 Bg4 16.h5=) 13...Bg4 (better is 13...Qd5 14.f3 Qe6–+) 14.f3–/+ ef3 15.Nf3 Qe3 16.Qe2 Qe2 17.Ke2 Rae8 18.Kf2 Ne4 19.Be4? (better is 19.Kg2–/+) 19...Re4–+ 20.Rhe1 Bc5 21.Kg2 Rfe8 22.Re4 Re4 23.Ne5 Re2 24.Kf1 Rc2 25.Nd3 (25.Ng4 Rb2 26.Rd1 f6–+) 25...Bh3 (better is 25...Be2 26.Ke1 Bd3–+) 26.Ke1 Rh2 (better is 26...Be3 27.a4–+) 27.Be5 (27.Nc5 Rb2 (27...bc5?! 28.Rd1 f6 29.Rd2 Rh1 30.Kf2–+) 28.Nb3 Rg2–+) 27...Rh1 (better is 27...Be3 28.g4 Rg2 29.Bf4 Bf4 30.Nf4 Rg1 31.Kf2 Ra1 32.Nh3 Ra2 33.Kf3 Ra3 34.Kg2–+) 28.Kd2 Ra1 29.Ba1 Bd6 30.Be5 Bd7 (better is 30...Bf1!? 31.Bd6 cd6 32.Nf2 Bb5 33.Ne4–+) 31.a4 f6 32.Bd6 cd6 33.Nf4 (33.Kc3 g5–+) 33...Kf7 34.Nd5 Ke6 35.Nc7 Ke5 36.Kd3 d5 37.Na6 Bf5 (37...Bf5 38.Kd2 Be4–+) 0–1. mtr – Mobile8, Caissa's Web, 2001.

4.b5 Bc5

5.c4 a6 6.a4 c6 7.Nc3 Qe7 8.Be2 0–0 9.Nh3 h6 10.Nf4 g5 11.Nh3 d5 12.cd5 Nd5 13.Nd5 cd5 14.Qb3 Be6 15.0–0 d4 16.Qd1 d3 17.Bg4 Nd7 18.Be6 Qe6 19.Qh5 Qg6 20.Qd1 Rac8 21.f4 f6 22.fg5 fg5 23.Rc1 Rf1 24.Qf1 Rf8 25.Qe1 ab5 26.Rc3 ba4 27.Ba3 Ba3 28.Ra3 b5 29.Qb1 Qc6 30.Qa2 Kh7 31.Rc3 Qf6 32.Rc1 Nc5 33.Qd5 Qf5 34.Qd4 Nb3 35.Rc7 Kg6 36.Rc6 Kh5 37.Qd5 Qf1 0–1. olawoj – gogu180, internet, 2014.

5.d3 ed3 6.cd3 0–0 7.Nd2 d5 8.Ngf3 Nbd7 9.Be2 b6 (9...a6!?=) 10.0–0+= Bb7 11.Nb3 Bd6 12.a4 c5 13.e4 (better is 13.bc6 Bc6 14.Nbd4+/–) 13...de4 14.de4 Qc7 15.e5 (better is 15.Nbd2!?=+) 15...Ne5–/+ 16.Ne5 Be5 17.Rb1 (better is 17.Be5!? Qe5 18.Re1–+) 17...Rad8 18.Be5 Qe5 19.Qc2 Qd5?? (better is 19...Be4 20.Qc4 Qg5–+) 20.Bf3=+ Qd7 21.Bb7 Qb7 22.Nd2 Rd7 23.Nc4 Rfd8 24.Ne5 Rd5 25.Nc6 R8d7 26.Rfe1 Rd2 27.Qf5 a6 28.h3 ab5 29.ab5 Qc7?? 30.Ra1+/– Qb7? 31.Ne5?? Rd8 32.Nc4 R2d5 33.Qf3 Qd7?? 34.Ne3?? Rd3 35.Ra8 Ra8 36.Qa8 Ne8 37.Nf5 (37…Rd1 38.Rd1 Qd1 39.Kh2–/+; better is 37.Nd5! Kf8 38.Nb6 Qb5 39.Qa7+=). OPA – Pawncross, Live Game Caissa's Web, 2004.

5.Ne2 0–0 6.Ng3 d5 7.Be2 d4 8.ed4 Bd4 9.c3 Bc5 10.0–0 Nbd7 11.a4 Ne5 12.d4 ed3 13.Bf3 Nf3 14.Qf3 d2 15.h3 Re8 16.Na3 Be6 17.c4 Ba3 18.Ra3 Bc4 19.Rd1 Re1 20.Kh2 Rd1 21.Qd1 Qd5 22.Bf6 gf6 23.Rc3 Rd8 24.Qg4 Qg5 25.Rc4 d1Q 26.Qd1 Rd1 27.Rg4 Qg4 28.hg4 Rd2 29.Ne4 Ra2 30.Nf6 Kg7 31.Nd5 Ra4 32.Nc7 Rg4 33.Ne8 Kg6 34.Nd6 a5 35.Nb7 a4 36.Nc5 Rb4 37.Kg3 a3 38.b6 Rb6 39.Na4 Rb3 40.Kf4 a2 41.Nc5 Rb4 42.Ke3 a1Q 43.Nd3 Qc3 44.g4 Rd4 45.f4 Qd3 46.Kf2 Re4 47.f5 Kg5 48.f6 Re2 49.Kf1 Qd1 0–1. elsh1403 (1660) – ncristian (1660), internet, 2014.

5.c4 0–0

6.Nc3 a6!?+=.

6.Nc3 d5 7.cd5= Bf5 8.Nge2 (8.Qc2 Re8= (8...Nd5? 9.Nd5 Bd6 10.Ne2+–)) 8...Nd5 9.Ng3 Nc3 10.Qb3 (10.Qc2 Na4 11.Qa4 Qd7+=) 10...Nd5 (10...Na2 11.Nf5 Nb4 12.Bg7 Qd7 13.Bf8 Bf8+–) 11.Nf5+/– Nf6 12.g4 (12.d3 c6+/–) 12...Nbd7 13.Rg1 Bb6?? (better is 13...Bd6 14.g5 Nh5+/–) 14.g5+– Nh5 (14...Ne8 15.Nh6! Kh8 16.Nf7 Rf7 17.Qf7 Qe7 18.Qe7 Bc5 19.Qd7 Bf8+–) 15.Nh6! Kh8 (15...gh6 16.gh6 Decoy) 16.Nf7 Rf7 17.Qf7 Qe8 18.Qe8 Re8 19.Be2 Nhf6 (19...Nc5 20.Bc3 Nd3 21.Kd1+–) 20.gf6 Nf6 21.Bf6 gf6 22.Bc4 c6 23.bc6 bc6 24.0–0–0 1–0. forsetinn (2055) – wotan_spears (1685), gameknot.com, 2013.

6.Nc3 d6 7.Nge2 Bg4 8.h3 Bh5 9.Qc2 Be2 (9...Bg6!?=) 10.Be2+= (worse is 10.Ne2 Re8=) 10...Re8 11.0–0 Nbd7 12.d4 (12.f3 ef3 13.Bf3 Rb8+/-) 12...ed3+= 13.Bd3 Ne5 14.Ne4 Nd3 15.Nf6 gf6 16.Qd3 Re6 17.Rad1 a6 18.a4 ab5 19.ab5 Re8 20.Qf5 (20.Qf5 Qe7 21.Qg4 (21.Qf6?! Qf6 22.Bf6 Ra4+=) 21...Kf8 22.Qh4+–) 1–0. Mallmann,Bernd (1970) – Ostertag,Stephan (1795), Rhein Main op, 2009.

6.d3 ed3 7.Bd3 d5 8.Nc3 dc4 9.Bc4= Qe7 10.Nf3 Ng4 11.0–0 Rd8 12.Qc2 c6 13.Rad1 Rd1+= 14.Rd1 cb5 15.Nb5 Be6 16.Nbd4+– Bc4 17.Qc4 a6?? 18.Nf5+– Qc7 19.Qg4 g6 20.Qh4 gf5 21.Qg5 Kf8 22.Rd8 Qd8 23.Qd8 1–0. spblex (2310) – cruciverbalist (2060), net–chess.com, 2009.

6.f3 d6!?+=.

6.f3 Nh5 7.fe4= Qh4 8.Ke2?? (better is 8.g3 Qe4 9.Nf3=) 8...Ng3!–+ 9.hg3 Qh1 10.Nf3 d6 11.Nc3 Bg4 12.Kf2 Nd7 (12...f5 13.ef5 Bf5 14.d4=) 13.Qc2 (13.Nd5 Nb6 14.Be2 Qd1 15.Rd1 Nd5 16.cd5 Rfe8–/+) 13...Ne5 14.Ne5 de5 15.Be2 Qh5 16.Qd1 (16.Bg4 Qg4 17.Na4 Bb4 18.Be5 f5–/+) 16...Be2 (16...f5 17.ef5 Qf5 18.Kg1 Be2 19.Qe2–+) 17.Ne2 (17.Qe2 Qg6–+) 17...Qg5 (better is 17...f5!? 18.Kg1 Rad8 19.d4 fe4 20.Qc2 ed4 21.ed4–+) 18.Qc2 Qf6 (18...f5 19.Rh1 fe4 20.Ke1–+) 19.Kg1 Rad8 20.Nf4? (better is 20.Rf1!? Qg5 21.Rf3–/+) 20...Qg5 (20...Qd6 21.Qc3 Rfe8 22.Rd1–+) 21.Nd5 (21.Nh3 Qg3 22.Bc3 Rd6–+) 21...Qg3 (21...c6 22.bc6 bc6 23.d4 cd5 24.dc5 Qe3 25.Qf2 Qe4 26.cd5 Qd5 27.c6–+) 22.Rf1? (better is 22.d4 Rd5! 23.cd5 Qe3 24.Kh2 Bd4 25.Bd4 ed4 26.Rd1–+) 22...h5 (better is 22...c6 23.Rf3 Qh4 24.Be5 cd5 25.ed5 Qe1 26.Kh2–+) 23.Bc3? (23.Rf3 Qe1 24.Rf1 Qe2+=) 23...h4 (23...c6 24.bc6 bc6 25.Nb4–/+) 24.Rf3 (24.d4 ed4 25.ed4 Bd6+=) 24...Qe1–+ 25.Kh2 g5?? (better is 25...Qe2–+) 26.Be5 (better is 26.d4 Qg3 27.Rg3 hg3 28.Kg3+–) 26...g4 (26...f5 27.ef5 Rf7+–) 27.Nf6+– Kg7 28.Ng4 Kh7? (28...f6!? 29.Bc3 Ba3+–) 29.Nf6 (better is 29.Rf6 Rd6 30.Bd6 cd6+–) 29...Kg6? (29...Kg7 30.d3 Bb4 31.Nd7 Kg8 32.Nf8 Kf8 33.c5+– (worse is 33.Bc7 Rd7 34.Be5 Bd2+–)) 30.Bc3 (30.Bd6 Rh8 A) 31.Bc5 Rd2 32.Nd7 Rc2 (32...Rd7?? 33.e5 Kg7 34.Qf5+–) 33.Ne5 Kg7 34.Rf7 Kg8 35.Rf8 Kh7 36.Rf7 Kh6 37.Rf6 Kh5 38.Rf5 Kh6 39.Rf6 Kg5 40.Rf5 Kh6 41.Rf6=; B) 31.e5 Kg7 32.Bc5 Qd2 33.Qf5+–) 30...Rd7 (30...Qe2 31.Nd5 Rd5 32.ed5 f5+–) 31.e5 Kh6 (31...Rd3 32.Qd3 Kg5 33.Qf5 Kh6 34.Qh7 Kg5 35.Qg7) 32.Qh7 Kg5 33.Qh5 1–0. GuestTQVC – GuestVXLT, freechess.org, 2017.

5.f4 ef3

6.Nf3 0–0 7.Be2 d5 8.0–0 Re8 9.a4 b6 10.Nd4 h6 11.Qe1 Bg4 12.Bg4 Ng4 13.Qg3 h5 14.h3 Bd6 15.Qf3 Nf6 16.Nf5 Nbd7 17.Nd6 cd6 18.Nc3 Ne5 19.Qf4 Ng6 20.Qf3 Ne5 21.Qg3 Re6 22.Qh4 Ne4 23.Qe1 Qg5 24.Nd5 Ng3 25.Rf4 h4 26.Nc7 Rf6 27.Na8 Rf4 28.ef4 Qf4 29.Qe3 Qf6 30.Nc7 Qg6 31.Be5 de5 32.Nd5 Qc2 33.Nc3 Qb2 34.Re1 f6 35.Ne4 Ne4 36.Qe4 Qd4 37.Qd4 ed4 38.Re4 Kf7 39.Rd4 Kg6 40.Rd7 a5 41.ba6 b5 42.ab5 f5 43.a7 Kf6 44.a8Q g5 45.Qd5 Kg6 46.Qe6 Kh5 47.Qf5 Kh6 48.Qf6 Kh5 0–1. surmavlod – hugoventil, internet, 2013.

6.Nf3 0–0 7.Be2 Re8 8.0–0 d5 9.d4 Be7 10.Qd2 Bg4 11.h3 Bh5 12.Ne5 Be2 13.Qe2 Bd6 14.Rf5 Be5 15.de5 Ne4 16.Qg4 Re6 17.Nc3 Nc3 18.Bc3 Nd7 19.Rg5 Rg6 20.Rg6 fg6 21.e6 Nf6 22.Qd4 c6 23.Rf1 Qe7 24.Qe5 Rf8 25.a4 Ne4 26.Bd4 Nd2 27.Rf8 Qf8 28.e7 Qf1 29.Kh2 Nf3 30.Kg3 Ne5 31.Be5 Kf7 32.Bd6 Ke8 33.bc6 bc6 34.c3 Qd3 35.Bb4 Qe3 36.Kh2 d4 37.cd4 Qd4 38.Ba3 Qa4 39.Bc5 a5 0–1. surmavlod – hugoventil, internet, 2013.

4.b5 c6

5.a4 Be7 6.c4 Qb6 7.Nc3 a6 8.f4 ab5 9.ab5 cb5 10.Ra8 Qc7 1–0. ventil – 76wisnia, internet, 2014.

5.Nc3 d5+=.

5.c4 a6 6.a4 (6.Bf6 Qf6 7.Nc3 Qe6+=) 6...d5 (6...Bb4 7.Bc3 Bc3 8.dc3+=) 7.d4 (7.cd5 Nd5 8.d3 ed3 9.Bd3 ab5 10.ab5 Bb4 11.Nd2 Ra1 12.Ba1 Bc3=) 7...Bb4 (7...ab5 8.ab5 Bb4 9.Nc3 Ra1 10.Ba1–/+) 8.Bc3 Qa5 (8...Bd6 9.c5 Be7 10.Nd2=) 9.Qd2 dc4?? (better is 9...Bc3 10.Nc3 ab5 11.cb5 0–0+=) 10.Bb4+– Qc7 11.Qc3 (better is 11.ba6!? b5 12.ab5 cb5+–) 11...Nd5 (11...ab5 12.a5+–) 12.Qb2 (12.Qc4 ab5 13.Qb3 ba4+/–) 12...ab5+/– 13.Ra3 (13.Nc3 Nb4 14.Qb4 Bf5+/–) 13...Na6 (13...Nb4!? 14.Qb4 Na6+=) 14.ab5+/– cb5 15.Ba5 Qc6 16.Bd2?? (better is 16.Ra1+/–) 16...b4–/+ 17.Bb4 (17.Ra5 c3 18.Qb3 cd2 19.Kd2 Ndc7–/+) 17...Ndb4–+ 18.Qc1 (18.Nc3 0–0–+) 18...Nd3 (18...b5 19.Qc3–+) 19.Bd3 ed3 (19...cd3 20.Qc6 bc6 21.f3–/+) 20.Nf3 0–0 (20...Bg4 21.Nbd2 Bf3 22.gf3–+) 21.0–0 b5 (better is 21...Be6!?–+) 22.Rd3+= Nb4 (22...cd3 Exploits the pin 23.Qc6) 23.Rd2 Bb7 24.Nc3 Nd5 (24...Nd3!? 25.Qb1 b4 26.Rd3 cd3 27.Qb4 Rfc8–/+) 25.Nd5 (25.Ne5 Qe8 26.Rb2 Nc3 27.Qc3 Be4=) 25...Qd5+= 26.Qc3 (26.Qb2 Ra5+=) 26...Ra4 (26...Qe6 27.Ng5 Qg6 28.f4–/+) 27.Qc2 (27.Rb2 Bc6+=) 27...Rfa8–/+ 28.Rb1 (28.Rfd1 Qe4–/+) 28...b4 29.Re2 (29.Rdd1 Ra2 30.Rb2 c3 31.Ra2 Ra2–+) 29...b3 (29...Qe4 30.Qc1–+) 30.Qc3 Qe4 (30...Qa5 31.Qa5 R8a5 32.Nd2–+) 31.Ree1 (31.Reb2 Qg6 32.Ne1 Bd5–/+) 31...Bd5 (31...Qg6 32.Nh4 Qf6 33.g3–+) 32.h3 (32.Red1 Qg6 33.Nh4 Qf6–+) 32...Ra2 33.Qb4 (33.Rec1 Qg6 34.Nh4 Qf6–+) 33...f6 (33...Qg6 34.Nh4 Qc2 35.Rf1–+) 34.Qd6 (34.Rec1 Qg6 35.Ne1 Qf5–/+) 34...Rc2 (34...c3 35.Rec1–+) 35.Qb4 (35.Rec1 Rca2–/+) 35...g5 (35...Qg6!? 36.Nh4 Qg5–+) 36.Qd6–/+ Kg7 (36...Qf5 37.Rec1 Rc1 38.Rc1–+) 37.Qg3 (37.Qc7 Kg8+=) 37...h6 (37...c3 38.Rec1–/+) 38.h4 (38.Qc7 Kg8–/+) 38...g4 (38...c3 39.Rec1–/+) 39.Nh2 (39.Rec1 Rca2–/+) 39...h5 40.f3 (40.Qc7 Kg8 41.f3 Qd3–/+) 40...Qg6 (40...Qd3 41.Qc7 Kg8 42.Qd7–/+) 41.e4 Bf7 (41...gf3 42.Qf3 Raa2 43.g3 Rg2 44.Kf1 Rh2 45.Rb3–+) 42.fg4 (42.d5 gf3 43.Qg6 Kg6 44.gf3 Raa2–+) 42...hg4 (better is 42...Raa2–/+) 43.Qg4?? (better is 43.h5 Qh5 44.Ng4+=) 43...Raa2–+ Threatening mate: Rxg2 44.Qg6 Bg6 (better is 44...Kg6 45.Kh1 c3–+) 45.Nf3 Rg2 46.Kh1 Bh5 47.Re3 (47.Rf1 Bf3 48.Rf3 Rh2 49.Kg1 Rag2 50.Kf1 Rg4 51.Rbb3 cb3 52.Rb3 Re4–+) 47...Rgf2 48.Ne1 (48.Ng5 Rh2 49.Kg1 Rhg2 50.Kf1 Raf2 51.Ke1 Re2 52.Kf1 Re3 53.Kg2 fg5 54.hg5 Re2 55.Kg3–+) 48...Rf1 0–1. Luettig,Hendrik – Damman,Frank, Pinneberg Winter–A, 1997.

5.Be2 d5=.

5.Be5 d6=+ 6.Bg3 d5 7.bc6 bc6 8.Bh4 Be7 9.Bf6 Bf6–/+ 10.c3 0–0 11.Be2 Nd7 12.Bg4 Ne5 13.Bc8 Qc8 14.d4 Nc4 15.Nd2 Qa6 16.Qe2 Qa3 17.Nc4?? Qc3–+ 18.Nd2 Qa1 19.Qd1 Qd1 20.Kd1 Rab8 21.Ne2 Rb2 22.Nc1 0–1. pinecrest1981 – Pemaquid, Live Game Caissa's Web, 2005.

5.a4 a6

6.c4 ab5 7.ab5 Ra1 8.Ba1 d5 9.cd5 cd5 10.Qa4 Nbd7 11.Bd4 Bd6 12.b6 (12.Nc3!?+=) 12...0–0–/+ 13.Qb5 Ng4 (13...Be5 14.Be5 Ne5 15.Nc3–/+) 14.g3 (14.Nc3 Ndf6= (worse is 14...Nh2 15.Qd5 Nb6 16.Qe4+/–)) 14...Ndf6+= 15.Bf6? (better is 15.Nc3!?+=) 15...Qf6–+ (worse is 15...gf6 16.Nc3+=) 16.Qd5?? (better is 16.Nh3 Qf3 17.Rg1 Nh2 18.Nf4 Nf1 19.Rf1–+) 16...Qf2 (16...Qf2 17.Kd1 Qf1 18.Kc2 Bb8–+) 0–1. GuestMMFQ – GuestKGZG, freechess.org, 2017.

6.c4 ab5 7.cb5 Bb4 (7...d5 8.d3+=) 8.Qb3 (8.Bc3 Bc3 9.Nc3 d5+=) 8...c5 (8...Ba5+=) 9.Bc4 (9.Bc3 Bc3 10.Qc3 d6+=) 9...0–0 (better is 9...d5 10.Be2 Be6–/+) 10.Ne2?? (10.Nc3 d6+=) 10...d6 (better is 10...d5 11.Bf6 Qf6 12.Nbc3 dc4 13.Qc4–+) 11.0–0? (better is 11.Bf6 Qf6 12.Nbc3+=) 11...b6?? (better is 11...d5 12.Bf6 Qf6–+ (12...dc4?! 13.Qb4 cb4 14.Bd8 Rd8 15.Rc1+=)) 12.Nbc3 (12.Bf6 Qf6 (worse is 12...gf6 13.Bd5 Ra5 14.Be4+–) 13.Nbc3 Qe5+=) 12...Bb7 13.Rfd1?? (13.Nd5 Nd5 (13...Bd2? 14.Bf6 gf6 15.Qb2+–) 14.Bd5 Qc7+/–) 13...Qe7?? (better is 13...d5 14.Nd5 Bd5 (worse is 14...Nd5 15.d4+=) 15.Bf6 Bc4 (15...Qf6? 16.Bd5 Ra7 17.Be4+–) 16.Qc4 Qf6 (16...gf6?! 17.Qe4 Nd7 18.d4=) 17.Qe4 Nd7–/+) 14.Nd5 Nd5 15.Bd5 Bd5 16.Qd5 Nd7 17.Qc4 (17.Ng3 Qe6 18.Qe4 d5+/–) 17...Nf6 (better is 17...Qe6!? 18.d3 ed3 19.Qd3 Ne5=) 18.Nf4 Rfd8 (18...Ng4 19.h3 Nf6 20.d3 ed3 21.Qd3+/–) 19.Bf6 Qf6 20.Nd5 Qe5 (better is 20...Qe6+/–) 21.Nb6 (better is 21.d3!?+–) 21...d5= 22.Qb3 (22.Qc2 Rab8 23.a5=) 22...Ra7 (22...Rab8!? 23.d4 ed3=) 23.d4+/– Qd6? (better is 23...Qe6 24.dc5 Bc5+/–) 24.dc5+– Bc5 (24...Qc5 25.Nd5 Ba5 26.b6+–) 25.Nd5 (25.Qd5 Qd5 26.Nd5 Rad7+–) 25...Rad7 (25...Qe5 26.Nf4 Rad7 27.Rab1+–) 26.Nc3 (26.Rac1 Bb6+–) 26...Qe7?! (26...Qe5 27.Rd7 Rd7+–) 27.Rd7 Rd7 28.Rd1 (28.Qc4 Bd6 29.Ne4 Bc7+–) 28...Rd1 (28...Bd6 29.Rd4+–) 29.Qd1 Bd6 (29...Ba3 30.h3 f5 31.g4+–) 30.Qd5 (30.h3 Qe5 31.Ne4 Bc7+–) 30...Qd8 (30...Qc7 31.g3+–) 31.Qe4 (31.g3 Qc7+–) 31...g6 (31...h5 32.Qc6+–) 32.Qc6 Qe7 (32...Kg7 33.b6 Qe7 34.Nd5+–) 33.Nd5 Qe5 34.g3 (34.f4 Qa1 35.Kf2 Qa2 36.Kg3 Qa3+–) 34...Qa1 (34...Kg7 35.b6+–) 35.Kg2 Qe5 (35...Be5 36.a5! Kg7 37.Qe8+–) 36.Nc3 (36.b6 Bb8+–) 36...h5 (36...Bb4 37.a5! h5 38.a6+–) 37.a5 h4 (37...Kg7 38.a6 Bb8 39.b6+–) 38.a6 hg3 (38...Bc5+–) 39.hg3 Bc5 40.Ne4 Be7 (40...Ba7 41.b6 Bb6 42.Nf6 Kg7 43.Qb6 Kh8 44.Qd8 Kg7 45.Ne8 Kh7+–) 41.a7 f5 42.Qg6 Qg7 43.a8Q (43.Nf6 Bf6 44.a8Q Bd8 45.Qd8) 43...Bf8 44.Nf6 Kh8 45.Qf8! Qf8 (45...Qf8 46.Qh7 Mate attack) 46.Qh7 1–0. mtr – abject, Caissa's Web, 2001.

6.c4 d5 7.cd5 Nd5 8.d3 ed3 9.Bd3 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Nd2+=.

6.bc6 dc6 7.d3 Bb4 8.Nd2 Bg4=.

5.a4 d5

6.c4 (--> 4.b5 d5 5.c4 c6 6.a4).

6.d3+=.

5.c4 d5

6.a4 (--> 4.b5 d5 5.c4 c6 6.a4).

6.cd5 Nd5 7.d3 ed3 8.Bd3 Qa5 9.Nd2 cb5 10.Bh7 =.

4.b5 d5

5.a4 a5 6.c4 Bb4 7.cd5 Qd5 8.Ne2 Bg4 (8...Qd8 9.Ng3+=) 9.Nbc3 Bc3 10.Bc3 Nbd7 11.h3 (11.Qc2 0–0=) 11...Be2 (11...Nc5!? 12.Nf4 Bd1 13.Nd5 Nd5 14.Bg7 Rg8+=) 12.Be2= 0–0 13.0–0 b6 14.Rc1 Nc5 15.Bf6 gf6 16.Bc4 Qg5 17.f3 Kh8 (17...f5!?+/–) 18.fe4+– Ne4 19.Bd5?? (better is 19.Bd3 Nc5 20.Bf5+–) 19...Qd5–+ 20.Rc7 Nd2 (20...Qd2?! 21.Qd2 Nd2 22.Rf6–+) 21.Rf6 Rad8 22.Qa1 Kg8 23.Rf4 Rd6 (better is 23...h5!?–+) 24.Rd4+= Nf3 25.gf3 Rg6 26.Rg4 Qf3 27.Qd4 Qh3 28.Rg6 hg6 29.Rc6 (29.Qb6 Qg3 30.Kf1 Qf3 31.Ke1 Rd8–+) 29...Qg3 30.Kf1 Qf3 31.Kg1 Qg3 ½–½. rcm06 (1920) – jrock1, gameknot.com, 2012.

5.a4 a6 6.Na3 Bd6 7.c4 ab5 8.ab5 0–0 9.cd5 Nd5 10.Nc4 Ra1 11.Qa1 Qg5 12.Nd6 cd6 13.f4 ef3 (13...Qg6!?+=) 14.Nf3= Qg6 15.g3 Nb4 16.Qa4?? (16.Kf2 Bg4+=) 16...Nd3 (better is 16...Qb1 17.Kf2 Qb2–+) 17.Bd3= Qd3 18.Qd1 (better is 18.Qd4 Qg6 19.0–0+=) 18...Bg4–/+ 19.Kf2 Nd7 20.h3 Bf3 21.Kf3 Qb5 22.Qc2 Qd5 (22...Nc5!? 23.g4–+) 23.e4–/+ Qh5 24.g4 Qh4 25.Qc3 Ne5 26.Kg2 h5 27.Qg3 (27.d4 Nd7 28.Qg3 Qg5 29.gh5 Qb5–/+) 27...Qg3 28.Kg3 hg4 29.hg4 Rc8 30.Bc3 Nc6 31.Rb1 Rc7 32.Kf4 f6 33.g5 Kf7 34.gf6 gf6 35.Rh1 Ke6 36.Rh8 Ne7 37.Re8 Kf7 38.Rb8 (38.Rd8!? d5 39.ed5=) 38...d5–/+ 39.Rh8?? (better is 39.e5 f5 40.Bb2–/+) 39...Ng6–+ 40.Ke3 (40.Kf5 Nh8 41.Bf6 Ng6 42.ed5 Rd7–+) 40...Nh8 41.ed5 Rc3! 42.dc3 Ke7 43.Kd4 Kd6 44.Kc4 b6 45.Kd4 Nf7 46.c4 (46.Ke4 Ng5 47.Kd4 f5–+) 46...Ne5 47.Kc3 Kc5 48.Kd2 Nc4 49.Kd3 Kd5 50.Kc3 b5 51.Kb4 f5 52.Kb5 f4 53.Kb4 f3 54.Kc3 f2 55.Kd3 f1Q 56.Kc2 Qf3 57.Kb1 Qe2 58.Kc1 Qd2 59.Kb1 Qb2 0–1. ateistawolnyx – tomikm, internet, 2013.

5.a4 Bb4 6.Ne2 0–0 7.Ng3 c6 8.Be2 cb5 9.ab5 b6 10.Nc3 Bb7 11.0–0 d4 12.Na2 d3 13.cd3 Ba5 14.Bf6 Qf6 15.Ne4 Qd8 16.Ng3 Qd5 17.Nc3 Qg2 0–1. ventil – ferdynand2, internet, 2014.

5.Nc3 c5 6.Nge2 Bg4 7.h3 Bh5 8.d3 Nbd7 9.de4 d4?? (better is 9...de4 10.g4 Bg6+=) 10.ed4+– cd4 11.Qd4 Bc5 12.Qd2 Qb6 (12...Bg6 13.Ng3+–) 13.Nf4 Bb4 14.Nh5 Nh5 15.Be2 (15.a3 Bc3 16.Qc3 0–0+–) 15...Nhf6 16.f3 Rc8 17.a3 Bd6 (17...Ba5 18.a4 Qc5 19.b6 ab6 20.e5–/+) 18.0–0–0 Be5 19.Na4 (19.f4 Bc3 20.Bc3 0–0+–) 19...Qe6 (19...Qc7 20.Be5 Ne5 21.Kb2+/–) 20.Qe3 Bb2 21.Kb2 0–0 0–1. Maurer – Wobick, corr SOK–89–46, 1989.

5.Nc3 c6 6.a4 (6.Nge2 Bd6+=) 6...Bb4 7.Nge2 0–0 8.Ng3 Nbd7 9.Be2 c5 10.0–0 a6 (10...Re8 11.d3 ed3 12.cd3=) 11.Nf5 (11.ba6 ba6 12.Rb1 Re8=) 11...Ne5+= 12.Bg4?? (better is 12.Na2 Nc4 A) 13.Nb4?? Nb2 (13...Bf5?! 14.Bf6 gf6 15.Bc4 dc4 16.Na2=) 14.Qc1 cb4–+; B) 13.Bc4 Bf5 14.Bf6 gf6 15.Nb4 dc4 16.Na2=) 12...Nfg4–+ 13.Ng3 Nh2! 14.Kh2 Bg4 15.Qc1 (15.Qb1–+) 15...Qh4 16.Kg1 Nf3 (16...Bc3 17.a5 Nf3 18.gf3 Bf3 19.b6 Qh3 20.Bc3 Qg2) 17.gf3 Bf3 18.Nd5 Rad8 19.Bf6 (19.Nb4?? Qh3 20.Bg7 Qg2) 19...gf6 20.Nf4 Bd2 21.Qa3 Kh8 22.Ng2 Qg5 23.ba6 (23.Ne1 Be1 24.Rfe1 Qh4 25.Qb2 Rd6 26.Qc3 Qh3 27.Qf6 Rf6 28.Ne4 Qg2) 23...h5 24.ab7 (24.Rad1 h4 25.Rd2 Rd2–+) 24...h4 25.Rad1 (25.c4 hg3 26.Qb2 gf2 27.Rf2 Be3 28.Kf1–+) 25...hg3 26.b8Q Rb8 27.Rd2 Qg4 (27...Bg2 28.f4 Qh4 29.Rg2 Kg7 30.Rd1 Rh8 31.Kf1 Qh1 32.Rg1 Qf3 33.Ke1 Qf2) 28.fg3 (28.Qa1 Kg7 29.Rd6 Rh8 30.Qf6 Kg8 31.fg3 Qg3 32.Rd8 Rd8 33.Qd8 Kg7 34.Qh8 Kh8–+) 28...Qg3 29.Qa1 Qg5 30.Qe1 (30.Rff2 Rfd8 31.Qe1 Rg8–+) 30...Rg8 31.Qf2 (31.Rff2–+) 31...Bg2 32.Qf6 Qf6 33.Rf6 Bf3 (better is 33...Rb1 34.Kf2 Rf1 35.Ke2 Rf6–+) 34.Kf2 (34.Kh2 Rg5 35.Rf3 ef3 36.Rf2–+) 34...Rg2 35.Ke1 (35.Kf1 Rb1 36.Rd1 Rd1) 35...Rb1 0–1. Tiedemann,Joern (2125) – Klein,Peter (1825), remoteschach.de, 2007.

5.Nc3 Be7 6.d3 Bf5 7.de4 de4 8.Qd8 Bd8 9.Bc4 (9.Nge2 a6 10.Ng3 Bg6 11.Bc4=) 9...0–0 (9...Nbd7 10.Nge2 Nb6 11.Bb3=) 10.Nd5 (10.Nge2 c6 11.Ng3=) 10...Nd5 11.Bd5 c6 12.bc6 bc6 13.Bc4 Ba5 14.c3 (better is 14.Kf1!?=) 14...Nd7–/+ 15.Ne2 c5 (15...Ne5 16.Ba6–/+) 16.Bb3 (16.Bd5!? Rad8 17.0–0–0+=) 16...Ne5–/+ 17.0–0 Rfd8 18.Rad1 (18.Rab1 c4 19.Bc2 Nd3–/+) 18...Rab8 (18...Bg4 19.Rd8 Rd8 20.Ng3–/+) 19.Rd8 Rd8 20.Rd1 Rd1 21.Bd1 g5 22.Ng3 Bg6 23.a4 Bb6 24.Be2 f5 25.c4 Nc6 26.Nf1 Ba5 27.Ba3 Bb6 28.Nd2 Na5 29.f3 Bh5 30.Kf2 ef3 31.Bf3 Bf7 32.Bd5 Kf8 33.Bf7 Kf7 34.Kf3 Ke6 35.e4 Nc6 36.ef5 ½–½. Zimmer – Rentzsch,H, corr, 1984.

5.Nc3 g6 6.Nd5!+/– Qd5 (6...Nd5 7.Bh8) 7.Bf6 Rg8 8.c4 (8.d3 Qb5 9.de4 Qa5 10.Qd2 Qd2 11.Kd2 Nd7+/–) 8...Qe6+= 9.Bc3 Bg7 (9...a6 10.ba6 Na6 11.d4+/–) 10.Rc1 (10.Bg7 Rg7 11.d4 ed3 12.Bd3 a6+/–) 10...Nd7 (10...Bc3 11.dc3 a6 12.Ra1+=) 11.Ne2 (11.Bg7!? Rg7 12.d4+/–) 11...Nc5 12.Nf4 Qd6 13.Bg7 Rg7 14.Nd5 (14.d4 ed3 15.Bd3 Bg4+/–) 14...Qe6?? (better is 14...a6+=) 15.Nc7+– (15…Kf8 16.Ne6 Be6 17.f3+–) 1–0. Dopper,Johan – Eldik, 1995.

5.c4 b6 6.a4 (6.Bf6 Qf6 (worse is 6...gf6 7.Nc3+/–) 7.Nc3 dc4 8.Bc4 Bb7=) 6...Be6 7.cd5 Bd5 (7...Nd5 8.Qc2 Nf6 9.Bc4=) 8.Nc3 Be7 (8...c6 9.Nd5 Nd5 10.Qg4+/–) 9.Nge2 (9.f3 0–0=) 9...0–0 10.Nd5 Nd5 (10...Qd5 11.Nc3 Qf5 12.Qc2=) 11.Ng3 Bf6 12.Bf6 Nf6 13.Rc1 (13.d3 ed3 14.Bd3 c6+=) 13...Nbd7 (13...Qe7 14.f3+=) 14.Be2 (14.d3 ed3 15.Bd3 a6+=) 14...Nc5= 15.0–0 Qd7 16.Rc4 (16.f3 Rad8=) 16...Rad8 Exerts pressure on the backward pawn (16...Rfd8 17.Rd4 Qe7 18.d3=) 17.Rd4 Qc8 (17...Qe6 18.d3=) 18.Rd8 (better is 18.d3!?+=) 18...Rd8+= 19.Qc2 Qd7 20.Rd1 g6 (20...c6 21.bc6 Qc6 22.d4 ed3 23.Bd3=) 21.h3 (21.f3 ef3 22.Bf3 Qd3+=) 21...h5 (21...c6 22.bc6 Qc6 23.d3 ed3 24.Rd3 Rd3 25.Bd3 Qa4 26.Qa4 Na4 27.Kf1–/+) 22.f3 ef3 23.Bf3 Qd3 24.Qd3 (24.Qb2 Nd5=) 24...Rd3 25.Be2 Ra3 26.Rc1 (26.Rf1 Kg7 27.d4 A) worse is 27...Re3 28.Kf2 (worse is 28.dc5 Rg3 29.c6 Ra3+=) 28...Rg3 29.Kg3 Na4 30.Kf3+=; B) 27...Na4+=) 26...Ra4 27.d4 Nce4 (better is 27...h4!? 28.Nf1 Ne6=) 28.Ne4+/– Ne4 29.Rc7 Ra1 30.Kh2 h4 31.Bc4? Attacking the backward pawn on f7 (31.Rc8 Kg7 32.g4–+) 31...Ng3 Threatening mate... how? 32.Bf7 Kf8 33.Rc8 Kf7 34.Rc7 Ke8 0–1. Ruhle,Ernst_Albrecht – Morrison,Mervyn, 5 sen. WM–H Liebenzell, 1995.

5.c4 c5 6.cd5 Qd5 7.Nc3 Qf5 8.h3 h5 9.Nge2 (better is 9.d3+=) 9...g5?? (better is 9...Bd6=) 10.Ng3+– Qe6 11.d3 (11.Nce4 Ne4 12.Bh8 Ng3 13.fg3 g4+–) 11...Bg7 (better is 11...ed3 12.Bd3 Nbd7+/–) 12.Nce4?? (better is 12.de4 Qe5 13.Qd2+–) 12...h4?? (better is 12...Ne4 13.Bg7 Ng3 14.fg3 Rh7=) 13.Ng5 (better is 13.Nf5! Qf5 14.Nd6 Ke7 15.Nf5 Bf5 16.Rc1+–) 13...Qe7 14.N3e4 b6?? (14...Ne4 15.Bg7 Nf2 16.Kf2+–) 15.Nf6 (better is 15.Qf3 Ne4 16.Bg7+–) 15...Bf6 16.Bf6 Qf6 17.Ne4 Qe5 18.f4 Qe6 19.Be2 (better is 19.Qf3!? Qe7 20.Nd6 Qd6 21.Qa8 a6+–) 19...Bb7 20.Bg4 Qe7 21.Bf3 f5?? (better is 21...a6+–) 22.Nd6! Qd6 23.Bb7 Qe7 24.Ba8 (24.Qf3 Qd7+–) 24...Qe3 25.Qe2 (25.Qe2 Qe2 26.Ke2+–) 1–0. GuestXCSC – GuestGNLS, freechess.org, 2017.

5.c4 d4 6.Bd4+= Be7 7.Nc3 Bf5 8.Nge2 c5 9.bc6 Nc6 10.Rb1 b6 (10...Qd7!?+=) 11.Bf6+/– Bf6 12.Ng3 Bc3 13.Nf5 (13.dc3?! Qf6+=) 13...Bf6 (13...Be5 14.Qc2 Rc8 15.Qe4+–) 14.Qg4 0–0 15.Qe4 Qc7 16.Qc2 Rfe8 17.Be2 g6 18.Ng3 Rac8 19.0–0 Be7 20.Ne4 White plans c5 20...f5 21.Nc3 Bd6 22.Nb5 Bh2 23.Kh1 Qb8 24.c5 Na5 25.d4 Kg7 (25...bc5 26.dc5 Be5 27.Qd2+–) 26.Bf3 a6 27.Nc3 Bc7 28.Nd5 b5 29.a4 Nc4 (29...f4 30.ab5 ab5 31.Be2 fe3 32.Bb5+– (32.Ne3?! b4+–; 32.Nc7?! Qc7 33.Bb5 Re7+–)) 30.Qa2 (30.Nc7?! Qc7 31.Qc3 Rb8+–) 30...Bd8 (30...Na5 31.Nb4 Qa7 32.Nc6 Nc6 33.Bc6+–) 31.Nc3 (31.Nb4 Re6+–) 31...Ne3 (31...Ba5 32.Nb5! (worse is 32.ab5 Ne3 33.Qa5 Nf1 34.Rf1 Red8+–) 32...ab5 33.Rb5+– (33.ab5?! Nd2 34.Qa5 Nf1 35.Rf1 f4+–)) 32.fe3 Bg5 33.ab5 ab5 (33...Be3 34.Bc6 (34.Qa6?! Qg3 35.Bg4 Bd4 36.Qb7 Rc7=; 34.ba6 Qg3 35.Bg4 fg4 36.Qf7 Kh6+=) 34...Red8 35.Nd5 (35.Qa6?! Rd4 36.Ne4 fe4+/–; 35.ba6?! Rd4 36.Be4 Qe5 37.Rb7 Kh6+–) 35...Bd4 36.Qd2 Rd5 37.Bd5+–) 34.Nb5 (worse is 34.Rb5 Qg3 35.Nd1 Qh4 36.Kg1 Be3 37.Ne3 Qd4+–) 34...Re7 (34...Qg3 35.Qf2 Qf2 36.Rf2 Be3+–) 35.Nd6 Qc7 36.Rb7 (36.Rb7 Qd8 37.Re7 Be7 38.Qf7 Kh6 39.Nc8+–) 1–0. Taulien,Hans_Juergen (2350) – Brueske,Thomas (2355), remoteschach.de, 2003.

5.c4 Bd6 6.cd5= Nd5 7.Bg7 Rg8 8.Bb2 Qh4 9.g3?? Bg3!–/+ 10.fg3?? Rg3!–+ 11.hg3 Qg3 12.Ke2 Bg4 (12...Bg4 13.Nf3 Bf3#) 0–1. Watkins,Roosevelt – Wall,Bill, Dayton, OH, 1982.

5.d3 b6 6.Nd2 Bb4 7.c3 Bd6 8.c4 Bb4 (8...dc4!? 9.de4 Bb4 10.Bf6 Qf6+=) 9.cd5+/– Nd5 10.a3 Bd2 11.Qd2 f6 (better is 11...Nf6!?+/–) 12.de4+– Ne7 13.Qd8 Kd8 14.Nf3 Bg4 (14...a6 15.e5 f5 16.Ng5+–) 15.Be2 (15.e5 Bf3 16.ef6 gf6 17.gf3 Rf8+–) 15...Nd7 (15...c5 16.0–0–0 Nd7 17.e5+–) 16.0–0 (16.Nd4!? Be2 17.Ne6 Kc8 18.Ke2 a6+–) 16...Ke8 17.h3 Be6 (17...Bf3 18.Bf3 a6 19.e5+–) 18.e5 (18.Rac1 Rc8+–) 18...Rd8 (18...c5 19.bc6 Nc6 20.ef6 Nf6 21.Rac1+–) 19.Rfc1 Nd5 (19...Rc8 20.ef6 Nf6 21.Bf6 gf6 22.Nd4+–) 20.Bc4 Nc5 21.Nd4 Ke7 (21...Kf7+–) 22.ef6 gf6 23.Nc6 Kf7 24.Nd8 Rd8 25.Rd1 (better is 25.Bd4 Ke7+–) 25...Ne4 (25...Na4 26.Ra2+–) 26.Bd3 (26.Rd4!? f5 27.f3 Nc5+–) 26...Nc5 (26...Ndc3 27.Bc3 Nc3 28.Bg6 Kg6 29.Rd8 Nb5 30.g4+–) 27.Bh7 Nb3 (27...Rh8 28.Bd3+–) 28.Rab1 Rf8 29.Ba1 (29.Be4 Ne7+–) 29...Nc5 (29...Na1 30.Rdc1+–) 30.Bd4 a6 (30...Rh8 31.Bc2+–) 31.Bc5 bc5 32.ba6 (32.Rdc1!? ab5 33.Rb5 Ra8+–) 32...Nc3 33.Rb7 Nd1 34.Rc7 Ke8 35.Be4 Kd8 36.Rc5 Rg8 (36...Rf7 37.Bb7 Rf8 38.a7+–) 37.a7 Ke7 38.Rb5 Nc3 39.Rb7 Kd6 (39...Bd7 40.Rb8 Ne4 41.a8Q Rb8 42.Qb8+–) 40.Rb8 Rb8 1–0. Steingraeber,Barbara (2240) – Sucharew,Stefan (1620), remoteschach.de, 2003.

5.d3 Bd7 6.de4 de4 7.Qd4 Be7 (7...Bd6 8.Nd2 Qe7 9.Qa4+=) 8.Nd2 c6 (8...a6 9.a4=) 9.Ne4+= Ne4 (9...cb5 10.Nd6 Bd6 11.Qd6 Qa5 12.Qd2 Qd2 13.Kd2+=) 10.Qe4+/– 0–0 11.Nf3 cb5 12.Bd3 (12.Qb7?? Bc6 13.Qa8 Qa5 14.Kd1 Rd8 15.Bd3 Ba8–+) 12...f5 (12...g6!?+/–) 13.Qd5 (13.Qb7?? Bc6 14.Qa8 Qa5 15.Ke2 Ba8–+) 13...Kh8 14.Ne5 (14.Qb7?? Bc6 15.Qa8 Qa5 16.Ke2 Ba8–+) 14...Qa5? (better is 14...Bf6 15.Qb7 Bc6 16.Nc6 Nc6 17.Qb5 Bb2 18.Qb2 Qa5 19.c3 Qd5+/–) 15.Kf1 Bc6 (15...Qb4 16.Bd4 Bc8 17.Nf7 Rf7 18.Qf7 Bf8+–) 16.Nf7 Kg8 (16...Rf7 17.Qf7 Qc3 18.Bc3 Bg2 19.Kg2 Nc6 20.Qg7) 17.Nh6 Kh8 18.Qg8!! Rg8 (18...Rg8 19.Nf7) 19.Nf7 1–0. Baumann,Heinz (2355) – Klein,Peter (1825), remoteschach.de, 2003.

5.d3 Be6 6.Ne2 =+.

5.d4 Bg4 6.Be2 h5 7.Bg4 Ng4 8.h3 Nf6 9.Ne2 c6 10.a4 a6 11.Nbc3 Qa5 12.0–0 Nbd7 13.ba6 Ra6 14.f3 ef3 15.Rf3 Bd6 16.Nf4 g6 17.Nce2 0–0 18.Bc3 Qc7 19.Qd3 Ne4 20.Be1 Ndf6 21.Ng3 Rfa8 22.a5 Qe7 23.c4 Bb4 24.cd5 cd5 25.Nd5 Nd5 26.Ne4 Ra5 27.Ra5 Ra5 28.Bb4 Qb4 29.Nf6 Nf6 30.Rf6 Ra1 31.Kh2 Qe7 32.Rf3 Qd6 33.Rg3 Ra3 34.Qe4 f5 35.Qe8 Kh7 36.Qf7 Kh6 37.Qg8 1–0. lousse (1725) – fleksern (1625), internet, 2013.

5.Be2 g6 6.d3 Bg7 7.de4+= 0–0 8.ed5+/– Nd5 9.Bg7 Kg7 10.Bf3 Nb6 11.Nc3 c6 12.a4 a6 13.Nge2 Be6 14.0–0 Bc4 15.Qd8 Rd8 16.Rfd1 N8d7? 17.bc6+– bc6 18.Bc6 Rac8 19.Bb7 Rc7 20.Bf3 Rdc8? 21.Nd5?? Nd5= 22.Nd4?? Ne5 23.Be4? Nc3–+ 24.Ne6 Be6 25.Rd6 a5 26.h3 Ne4 (26...Ne4 27.Rd4 Nf6–+) 0–1. gtate (2055) – hbeni (1925), net–chess.com, 2006.

5.Ne2 c5 6.Nf4 Bd7 7.a4 Bd6 8.c4 Bf4 9.ef4 d4 10.g3 0–0 11.Bg2 Re8 12.0–0 Bg4 13.f3 ef3 14.Bf3 Bh3 15.Rf2 Qc7 16.Na3 Nbd7 17.Nc2 Ne4 18.Be4 Re4 19.Qf3 Rae8 20.g4 Bg4 21.Qg4 Nf6 22.Qg3 Nh5 23.Qf3 Nf4 24.Raf1 Ne2 25.Kh1 Rf4 26.Qd5 Rf2 27.Rf2 Nf4 28.Qf3 Ne6 29.Re2 Rd8 30.Ne1 Nf4 31.Rf2 Ne6 32.Nd3 Ng5 33.Qf4 Qf4 34.Nf4 Re8 35.Nd5 Re1 36.Kg2 Ne4 37.Rf1 Re2 38.Kf3 Nd2 39.Ke2 Nf1 40.Kf1 Kf8 41.Ba3 b6 42.a5 f5 43.ab6 ab6 44.Nb6 Kf7 45.Bc5 Ke6 46.Bd4 g5 47.Kf2 h5 48.h3 f4 49.Kf3 Kf5 50.Nd5 g4 0–1. surmavlod – magda9987, internet, 2013.

5.Ne2 Qd7 6.Nd4 Bc5 7.a4 Bd4 8.Bd4 Qd6 9.c4 Be6 10.c5 Qd7 11.Nc3 0–0 12.Qc2 Qe7 13.Be2 Nbd7 14.c6 bc6 15.bc6 Nb6 16.a5 Nc4 17.Bc4 dc4 18.Nb5 a6 19.Na3 Nd5 20.0–0 Nb4 21.Qc3 Nc6 22.Bg7 f6 23.Bf8 Rf8 24.Nc4 Qc5 25.Nb2 Qd6 26.d4 Ne7 27.Rac1 c6 28.Qc5 Qd7 29.Nc4 Rf7 30.Nb6 Qc7 31.Qh5 Rg7 32.g3 Nf5 33.Qe8 1–0. surmavlod – towaroznawca, internet, 2013.

5.Ne2 Bf5 6.c4 dc4 7.Ng3 Be6 8.Nc3 Bc5 9.Nce4 Ne4 10.Ne4 Bb6 11.Bg7 Rg8 12.Bb2 Nd7 13.Ng3 Nc5 14.Be2 Nd3 15.Bd3 Qd3 16.Qb1 Qd5 17.Qh7 0–0–0 18.f3 Qd2 19.Kf1 Qb2 20.Re1 Qd2 21.Ne2 Be3 22.Qe4 Rde8 23.Qb1 Qd3 24.Qb2 Bd4 25.Qa3 Qa3 26.Nd4 Qd3 27.Ne2 Bd5 28.h4 Re2 29.Re2 Re8 30.Kf2 Qe2 31.Kg3 Qe5 32.Kf2 Qf4 33.Rd1 Rd8 34.Rc1 Qh4 35.Ke2 Qg3 36.Kd2 Qg2 37.Kc3 Qf3 38.Kb4 Qe3 39.a4 Qc1 40.b6 Qd2 41.Ka3 Qc3 42.Ka2 Qb3 43.Ka1 c3 44.bc7 Qb2 0–1. brother – transit125, internet, 2013.

5.Be5 Nbd7 6.Bf4 Nc5 7.c3 (7.Nc3 Be7=+) 7...a6 (better is 7...Bg4 8.f3 Be6–/+) 8.Ne2?? (8.ba6 ba6 9.d4 ed3 10.Bd3 Be7=+) 8...ab5 (8...Nd3) 9.Nd4–/+ c6 10.h3 (10.Be2 Be7–/+) 10...Bd6–+ 11.Bg5 (11.Bd6 Qd6 12.Nc2 0–0–+) 11...0–0 12.Be2 h6 13.Bf6 gf6 14.Bh5 Kh7 15.g4 Nd3 16.Ke2 Bd7 17.f4 c5 18.Nf5 Qc8?? 19.Nd6+/– Qc6 20.Nf7 Be6+= 21.g5 hg5 22.fg5 Bf7–/+ 23.g6 Bg6–+ 24.Bg6 Kg6 25.Qg1 Kf7 26.Qg4 Rh8 27.h4 Rag8 28.Qh3 Ne5 29.Na3 b4 30.Nc2 Qa6 31.c4 Qc4 32.Kd1 Nf3 33.Qd7 Kg6 34.Qg4 Kh6 35.Qf4 Kg7 36.h5 Rh5 37.Rh5?? Qf1 38.Ne1 Qe1 39.Kc2 Qd2 40.Kb3 Qc3 41.Ka4 Ra8 42.Kb5 Qc4 43.Kb6 Qa6 44.Kc7 Qc6# 0–1. blacksteelpipe – snowmain, Live Game Caissa's Web, 2005.

5.f3 a6 6.Bf6 Qf6 7.Nc3 Qe5 8.Rb1 ab5 9.fe4 de4 10.Rb5 =+.

5.f3 Bb4 6.c4 0–0 7.Qb3 Bd6 8.Nc3 c6 9.Rc1 a6 10.bc6 =.

5.f3 Bc5 6.Ne2 0–0 7.Nd4 a6 8.ba6 Na6 9.Be2 Re8 10.0–0 =+.

5.f3 Bd7 6.c4 Be6 7.Qc2 c6 8.cd5 cd5 9.Nc3 Bb4 10.Nge2 =.

5.f3 Be6 6.Ne2 ef3 7.gf3 Bd6 8.Nd4 Nh5 9.Qe2 Qh4 10.Kd1 =+.

5.f3 Be7 6.c4 0–0 7.cd5 ef3 8.Nf3 Nd5 9.Be2 a6 10.0–0 =.

5.f3 Bf5 6.Ne2 ef3 7.gf3 Bd6 8.Nd4 (8.Bg2 a6 9.Nbc3 0–0 10.f4+=) 8...Bd7 (8...Bg6 9.f4 Ne4 10.Nf3+=) 9.Ba3 (9.Rg1 Bh2 10.Rg2–/+) 9...Qe7 (9...Ne4 10.Bd6–/+) 10.Bd6 Qd6 (worse is 10...cd6 11.Rg1+=) 11.c4 g6 (11...c5!? 12.bc6 Nc6+=) 12.Nc3= c6 13.bc6 Nc6 (13...Bc6!? 14.Qb3 Nbd7+=) 14.Ndb5+/– Qb8 15.Nd5 Nd5 16.cd5 Nd8 17.Qc1 Bb5 18.Bb5 Kf8 19.Qc3 Rg8 20.f4 a6 21.Qc5 Kg7 22.Bd7 Rf8 23.Qe7 Ra7 24.Rc1 (better is 24.h4!? h5 25.Rg1+–) 24...b5+/– 25.Rg1 (better is 25.f5!? Qb7 26.f6 Kg8 27.Bc6 Qe7 28.fe7 Re7 29.Ke2+=) 25...Qb7= 26.Qe5 f6 27.Qe7 Nf7 28.Rc6 Qd7 (28...Kg8 29.Qf6 Rfa8+–) 29.Qf6 Kg8 30.Rg6! hg6 31.Qg6 Kh8 32.Qh5 Nh6 33.Qh6 Qh7 (33...Kg8 34.Rg6 Qg7 35.Rg7 Rg7 36.Qa6 Rg2+–) 34.Qf8 Qg8 35.Rh6 (better is 35.Qh6 Rh7 36.Qf6 Rg7+–) 35...Rh7 36.Qf6 Qg7 37.Qg7 Kg7 38.Rh7 Kh7 39.d4 (39.d4 Kg8 40.h4+–) 1–0. marekt – asdfcheck, GameColony.com, 2002.

5.f4 Bd6 6.Be2 (6.Ne2 0–0=+) 6...c5 (6...0–0 7.Nc3–/+) 7.c4 (7.d3 ed3 8.cd3 0–0=+) 7...0–0–/+ 8.cd5 Nd5 9.Nc3 Nc3 10.Bc3 Re8 11.h4 (11.d4 ed3 12.Qd3 Qe7=+) 11...Nd7 (11...a6 12.Qc2–/+) 12.Bg4 (12.d4 Nb6 13.Qd2 Nd5–/+) 12...Nf6 (12...c4 13.Be2–/+) 13.Bc8 Rc8 (< 13...Qc8 14.Bf6 gf6 15.Qh5=+) 14.g4 (14.Qa4 Ra8–/+) 14...Nd5 15.a4 (15.Rc1 Qd7–/+) 15...Qb6 (15...c4 16.Ne2–/+) 16.Ne2–/+ Rcd8 (16...Be7 17.Ng3–/+) 17.g5 (17.Qc2 Re6–/+) 17...c4 18.Rb1 Nc3 19.Nc3 Bf4 (better is 19...Bc5 20.Qc2 Rd3–/+) 20.Qe2? (20.ef4 e3 21.Kf1 Rd2 22.Qe1–+) 20...Bg3–+ 21.Kf1 Qe6 22.Kg2 Bc7 23.Rb4 Rd3 24.Rb2 Red8 (better is 24...f5–+) 25.Qf2?? (25.Rc2–+) 25...Qg4 26.Kf1 Rc3! 27.Rb1 (27.dc3 Rd1) 27…Rc1 (28.Rc1 Ba5–/+; better is 27...Ra3 28.Rg1 Qd7–+) 0–1. Gajda,Leszek – Szczesiak,Zenon, corr 2. AMM, Poland, 1993.

5.f4 ef3 6.Nf3 Bg4 7.Be2 Qd7 8.0–0 Bf3 9.Bf3 Qb5 10.Bf6 gf6 11.Nc3 Qc5 12.Bd5 c6 13.Bb3 Bd6 14.Ne4 Qe5 15.Nd6 Qd6 16.Qf3 Nd7 17.d4 0–0–0 18.c4 Rde8 19.c5 Qe7 20.Rfe1 h5 21.a4 h4 22.h3 Rhg8 23.a5 a6 24.Kh1 Qe4 25.Qe4 Re4 26.Bf7 Rg7 27.Bh5 Rg3 28.Bf3 Re6 29.d5 cd5 30.Bd5 Ree3 31.Re3 Re3 32.c6 bc6 33.Bc6 Ne5 34.Rc1 Kd8 35.Rd1 Ke7 36.Bb7 Ra3 37.Ba6 Ra5 38.Bc8 Ra2 39.Re1 Kf7 40.Kg1 Kg6 41.Bg4 Kg5 42.Bc8 Rc2 43.Be6 Nd3 44.Rf1 Nf4 45.Rf4 Kf4 46.Bg4 Kg3 47.Bf3 Rc1 0–1. surmavlod – zimnasuka13, internet, 2013.

5.g3 Bg4 6.f3 ef3 7.Nf3 d4 8.h3 Bh5 9.g4 Bg6 10.Nd4 Bc5 11.Bg2 Bd4 12.Bd4 Nd5 13.0–0 Nb4 14.Bb7 Nd7 15.Ba8 Qa8 16.d3 0–0 17.a3 Nd5 18.Qf3 N7b6 19.h4 h6 20.h5 Bh7 21.e4 Ne7 22.g5 hg5 23.Bg7 Kg7 24.Qf6 Kg8 25.h6 1–0. BlackDemon (2650) – VMACforever, FICS rated standard game, 2013.

5.g3 h5 6.Bg2 h4 7.Ne2 h3 8.Bf1 Bg4 9.Qc1 Bf3 10.Rg1 Ng4 11.Nd4? (better is 11.Nf4-/+) 11...Nh2–+ 12.Nf3 (12.Ba3–+) 12...Nf3 (12...ef3?! 13.Bd3 Qg5 14.Nc3–+) 13.Ke2 Ng1 (13...Ng1 14.Kd1 h2–+) 0–1. Schmidt,Joshua Paul – Nakamura,Hi (2740), BNBank Gp1 Oslo NOR, 2010.

5.h3 Bb4 6.a3 Be7 7.Nc3 0–0 8.d3 Bd6 9.de4 de4 10.Bc4 =+.

5.h3 c5 6.a4 d4 7.Na3 de3 8.de3 Qd1 9.Rd1 Be7 10.Nc4 0–0 11.Ne2 Be6 12.Nf4 Bc4 13.Bc4 Nbd7 14.0–0 Nb6 15.Ba2 Na4 16.Be5 Rad8 17.Nd5 Nd5 18.Bd5 Bf6 19.Bf6 gf6 20.Bb7 Nc3 21.Rd8 Rd8 22.Ra1 Nb5 23.Bc6 Nc3 24.Ra7 Rd2 25.Rc7 Rc2 26.Be8 Nd5 27.Bf7 Kf8 28.Bd5 f5 29.g4 c4 30.gf5 c3 31.Be4 Rc1 32.Kg2 Ra1 33.Rc3 1–0. ateistawolnyx – lelekl62, internet, 2014.

5.h3 Bc5 6.d3 0–0 7.Nd2 Re8 8.de4 de4 9.Ne2 Bd6 10.Nc4 =+.

5.h3 Bd7 6.c4 dc4 7.Bc4 Bd6 8.d3 a6 9.Qb3 0–0 10.Nc3 =+.

5.h3 Nbd7 6.Ne2 a6 7.ba6 Ra6 8.Nd4 Ra8 9.Be2 Bc5 10.0–0 =+.

5.h3 Be6 6.Ne2 Bd6 7.Nbc3 Be5 8.d3 Qe7 9.a4 c6 10.Ba3 =+.

5.h3 Bf5 6.Nc3 Bd6 7.Nge2 0–0 8.Nd4 Bd7 9.Be2 Be5 10.0–0 =+.

5.a4 b6

6.c4 Bc5 7.Qb3 (7.cd5 Nd5 8.Bg7 Rg8+=) 7...Be6 8.Nc3 a6 (better is 8...d4!? 9.Nce2 de3 10.de3 0–0=) 9.cd5+/– Nd5 10.Ne4?? (better is 10.Bc4 Nc3 11.Be6 fe6 12.Qe6 (12.Qc3?! Qg5=; 12.dc3?! Qd5 13.Qd5 ed5=) 12...Qe7 13.Qc8 Qd8 14.Qd8 Kd8 15.Bc3+/–) 10...Ne3–/+ 11.Qc3 Bd4! (11...Nf1 12.Nc5 bc5 13.Kf1 ab5 14.Ke1+=) 12.Qd3? (12.Qd4 Nc2 Double attack (12...Nc2 Decoy)) 12...Bb2 13.Qd8 Kd8 14.fe3 (14.Rb1 Nf1 15.Rb2 ab5 16.Ng5–+) 14...Ba1 15.Nf3 ab5 16.Bb5 (16.ab5 Bd5 17.Bd3 Re8–+) 16...c6 17.0–0 (17.Bd3 Ra4 18.Neg5 Bf6–+) 17...cb5 18.Ra1 ba4 19.Nd4 Re8 20.Ng5 (20.Ne6 Re6 21.Nc3 a3–+) 20...h6 21.Ne4 Nd7 22.Nc6 Kc7 23.Rc1 Kb7 (better is 23...Nc5 24.Nb4 a3–+) 24.Nd6= Ka6 25.Ra1?? (better is 25.Nb4 Ka5 26.Nc6 Ka6 27.Nb4 Ka5 28.Nc6 Ka6=) 25...b5–+ 26.d4 (26.Ne8 Re8 27.Nd4 Nc5–+) 26...Rg8 (26...Rf8!? 27.d5 Kb6 28.e4–+) 27.e4 1–0. jura1946 – tubans, internet, 2013.

6.c4 c6 7.cd5 cd5 8.d3 +=.

6.Ne2 Bb7 7.Ng3 Bd6 8.Be2 0–0 9.0–0 c6 10.h3 cb5 11.ab5 Qc7 12.Nf5 Be5 13.Nd4 a6 14.f4 ef3 15.Rf3 ab5 16.Bb5 Ra1 17.Ba1 Nbd7 18.Bc3 Ne4 19.Be2 Ndf6 20.Na3 Nc3 21.dc3 Qc3 22.Nab5 Qc5 23.Rf5 Bd4 24.Nd4 Ne4 25.Bd3 Nc3 26.Qf3 Ne4 27.Rh5 g6 28.Rh4 Kg7 29.Rf4 Bc8 30.Be4 de4 31.Qe4 Bd7 32.Rf2 Qc3 33.Qf4 1–0. ventil (1720) – dhw13, internet, 2014.

6.h4 c6 7.h5 Be7 8.h6 g6 9.Ne2 cb5 10.ab5 Nbd7 11.Nd4 Bb7 12.Nc6 Bc6 13.bc6 Nc5 14.Bb5 Qc7 15.Nc3 0–0 16.d4 ed3 17.cd3 a6 18.Ba4 b5 19.Bc2 Qc6 20.Rg1 Rfe8 21.Ne2 Nh5 (21...Ne6–+) 22.Bg7? (better is 22.g4 Nf6 23.Nd4–/+) 22...Ng7–+ 23.hg7 Kg7 24.Nf4 (24.Qd2 b4!–+) 24...Bf6 25.Rb1 (25.d4 Ne6 26.Ne6 fe6 27.Rc1 Qc3 28.Ke2–+) 25...d4 26.e4 Ne6 (26...Rac8!? 27.f3 Ne4 28.fe4 Qc3 29.Qd2 Qc2 30.Qc2 Rc2 31.Nd5–+) 27.Nh3 Ng5 28.f4 Nh3 29.gh3 Qc3 30.Kf1 Bh4 31.f5 Re5 32.fg6 (32.Bb3 Rae8 33.Ba2 Rf5 34.ef5 Re1 35.Qe1 Be1 36.fg6 Qd3 37.Ke1 Qe3 38.Kf1 Qh3 39.Rg2 fg6–+) 32...fg6 33.Rb3 (33.Rg2–+) 33...Rf8 34.Kg2 Rg5 (34...Rg5 35.Kh1 Rg1 36.Qg1 Qc2 37.Qd4 Kh6–+) 0–1. aleksandras19 – ravkb, internet, 2013.

5.a4 c5

6.Na3 Be7 7.c4 d4 8.ed4 cd4 9.Bd4?? (better is 9.f3–/+) 9...Qd4–+ 10.Nc2 Qe5 11.Be2 Qg5 12.g3 h5 (12...0–0 13.d4–+) 13.h4 Qc5 14.Ne3 Qd4 15.Nh3 0–0 16.Nf4 Rd8 17.0–0 g6 (17...Qd2?! 18.Ned5 Qd1 19.Rfd1–+) 18.Nh5 (18.d3–+) 18...gh5 19.Bh5 Nh5 (19...Bc5!? 20.Be2–+) 20.Qh5 Qg7 (20...Be6!? 21.Rfe1 Bc5 22.Nd5 Qf2 23.Kh1–+) 21.Nf5 Bf5 22.Qf5 Nd7 23.Qe4 Bc5 24.Qb7 Qg3 25.Qg2 Qg2 26.Kg2 Nf6 27.Rad1 Rd3 28.Rg1 (28.Rfe1 Rc8–+) 28...Kf8 (28...Kh7 29.Rge1 Rg8 30.Kf1–+) 29.Kf1 (29.Rge1 Rad8 30.Re2 R8d4–+) 29...Re8 (29...Ne4 30.h5 Re8 31.Kg2 Nf2 32.Rge1 Nd1 33.Re8 Ke8 34.a5–+) 30.Rg5 Rf3 (better is 30...Ne4 31.Rd5 Nf2–+) 31.Rc5= Ne4 32.Rd5 Rf2 Looking at d2 33.Kg1 Rf4 34.Rh5 Rg4 35.Kh2 Nf6 36.Rh8+= Ng8 37.Kh3 Rc4?? 38.Rg1+– Ra4 39.Rgg8 Ke7 40.Re8 Kf6 41.Rh6 Kg7 42.Ra6 Rd4 43.Ra7 Rd3 44.Kg4 Rd4 45.Kf3 Rd2 46.Ree7 Rd3 47.Ke4 Rh3 48.Rf7 Kg8 49.Rfc7 Rh4 50.Kd5 Rh5 51.Kc4 Rh4 52.Kc5 Rh5 53.Kb4 Rh4 54.Ka5 Rf4 55.Rc8 Rf8 56.Rf8 Kf8 57.b6 Kg8 58.b7 Kh8 59.b8Q 1–0. ateistawolnyx – postar80, internet, 2013.

6.c4 d4 7.d3 de3 8.fe3 Bd6 9.Ne2 ed3 10.Ng3 Bg4 11.Qd3 Bg3 12.hg3 Qd3 13.Bd3 Nbd7 14.Nd2 h6 15.Nf3 0–0 16.a5 b6 17.Kf2 Rfe8 18.Rhe1 Ne4 19.Be4 Re4 20.Nd2 Re6 21.e4 Rae8 22.ab6 ab6 23.Ra7 Ne5 24.Rea1 Nd3 25.Ke3 Nb2 26.Ra8 Ra8 27.Ra8 Kh7 28.Kf4 Be2 29.Rb8 Bc4 30.Nc4 Nc4 31.g4 Na3 32.g5 hg5 33.Kg5 Nb5 34.Rb7 f6 35.Kf5 Rc6 36.e5 Nd4 37.Ke4 fe5 38.Ke5 Rg6 39.Kd5 Kh6 40.g4 Kg5 41.Rb8 Kg4 42.Rg8 Nf5 43.Kc4 Nd6 44.Kd5 c4 45.Rb8 b5 46.Kd4 Rg5 47.Rb6 Ne8 48.Rb8 Nc7 49.Rb7 Ne6 50.Kc3 g6 51.Rb8 Kf5 52.Rb6 Kf6 53.Rb8 Rd5 54.Rf8 Ke7 55.Rh8 Rd3 56.Kb4 Rb3 57.Ka5 c3 58.Rh7 Kf6 59.Rh2 Rb2 60.Kb6 Rh2 61.Kb5 c2 62.Kb4 c1Q 63.Kb3 Rb2 64.Ka4 g5 65.Ka5 g4 66.Ka6 g3 67.Ka7 g2 68.Ka8 Qa1 0–1. ventil – 76wisnia, internet, 2014.

6.bc6 bc6 7.h3 Bc5 8.c4 d4 9.ed4 Bd4 10.Bd4 Qd4 11.Nc3 0–0 12.Nge2 Qc4 13.Nf4 Qb4 14.Rb1 Qe7 15.Be2 Nbd7 16.0–0 Nc5 (16...Qd6 17.Nh5 Nh5 18.Bh5–/+) 17.d4 Ne6 18.Ne6 Be6 (18...fe6?! 19.Qb3=) 19.f3 ef3 20.Bf3 Rac8 21.Re1 Qd7 22.Ne4 Nd5 (22...Ne4 23.Re4 Rfd8 24.Qe2–/+) 23.Ng5 Bf5 24.Bd5 Qd5 25.Rb7 Bh3?? (better is 25...Rb8 26.Ra7 Rb1–/+) 26.Nh3+/– c5 27.dc5?? (better is 27.Ree7+–) 27...Qb7–+ 28.Qd4 a5 29.Re5 Qb1 30.Kh2 Qb8 31.Nf4 Rcd8 32.Qe4 f6 (32...Rfe8 33.Re8 Re8 34.Qf5–+) 33.Rf5?? (better is 33.Rh5 h6 34.Rh6–/+) 33...Rfe8 (better is 33...g5 34.c6 Qc7 35.Rb5–+) 34.Qc4 Kh8 35.g3 (35.c6 Qc7 36.Qc3–+) 35...Re5 (better is 35...Rd2 36.Ng2 Ree2 37.Qe2 Re2–+) 36.Re5 (36.Re5 fe5 37.Nd3–+). riditko – emirek, internet, 2013.

5.a4 Bc5

6.Be2 0–0 7.h3 h6. elev – shaker22, internet, 2013.

6.Ne2 Bg4 7.h3 Bh5 8.Nbc3 0–0 9.Qc1 c6 10.Ng3 Bg6 11.Be2 Bd6 12.0–0 c5 13.Re1 d4 14.Na2 d3 15.cd3 ed3 16.Bf3 Nbd7 17.Bb7 Rb8 18.Bf3 Ne5 19.Qd1 c4 20.Nc3 Nf3 21.Qf3 Qe7 22.Nf1 Bh5 23.g4 Bg6 24.Qg2 Be4 25.f3 Ba8 26.Qf2 Nd5 27.Nd5 Bd5 28.e4 Ba8 29.Ne3 Rbd8 30.Nf5 Qc7 31.Nd6 Rd6 32.Qe3 Rh6 33.Kg2 Rg6 34.Rh1 h5 35.Kf2 h4 36.Rhg1 1–0. ventil (1655) – mirekg, internet, 2014.

5.a4 c6

6.Ne2 cb5 7.ab5 Bd7 8.Ng3 Be7 9.Nh5 Nh5 10.Qh5 Bf6 11.Bf6 Qf6 12.Nc3 0–0 13.Qd5 Bc6 14.bc6 Qc6 15.Qc6 Nc6 16.Bb5 Rfe8 17.Bc6 bc6 18.0–0 a5 19.Ra4 Re5 20.f4 ef3 21.Rf3 Rb8 22.Ne4 Rb4 23.Rb4 ab4 24.Nd6 f6 25.Nc4 Rd5 26.Nb6 Rd2 27.e4 Rc2 28.Rb3 Re2 29.Rb4 c5 30.Rc4 Rb2 31.Nd5 Re2 32.h3 Kf7 33.Nf4 Re1 34.Kf2 Ra1 35.Rc5 Ra2 36.Kg3 Ra3 37.Kh2 Re3 38.Rc7 Kf8 39.Ne6 Ke8 40.Ng7 Kd8 41.Rc4 Ke7 42.Nf5 1–0. tuulevalja – 3karpov, internet, 2014.

6.h3 Bd6 7.Ne2 cb5 8.ab5 0–0 9.Nbc3 Nbd7 10.d4 ed3 11.Qd3 (11.cd3 Nb6 Combination; 11.Qd3 Ne5 Decoy) 11...Ne5 12.Qd1 b6 (better is 12...Nc4 13.Ra2 a5+=) 13.Nd5?? (better is 13.Nf4=) 13...Nd5–+ 14.Qd5?? (better is 14.Ra4–+) 14...Bb4 15.c3 (15.Bc3 Qd5 16.Bb4–+) 15...Qd5 16.cb4 (16.Nd4 Ba5–+) 16...Qb5 (better is 16...Nd3 17.Kd2 Nf2 18.Bd4 Nh1 19.Nc3–+) 17.Bc3 (17.Be5 Qe5 18.Nd4 Rd8–+) 17...Nd3 18.Kd2 Nf2 19.Rg1 (19.Nd4 Qg5 (19...Nh1?! 20.Bb5 Ng3 21.Bc6+=) 20.Bd3 Nh1–+) 19...Ne4 20.Kc2 Bf5 21.Nd4 Nc3 22.Kc3 Rac8 23.Kb3 Qd5 24.Ka4 Bd7 25.b5 Rc4! 26.Bc4 Qc4 27.Ka3 Bb5 28.Nb5 Qb5 29.Rgb1 Qd3 30.Kb4 Qe3 31.Ra7 Qe4 32.Kb5 Qb1 33.Kc6 Qe4 34.Kb6 Qe3 35.Kb7 Qa7! 36.Ka7 f5 37.Kb6 f4 38.Kc5 f3 39.gf3 Rf3 40.h4 Rh3 41.Kd4 Rh4 42.Ke5 Kf7 43.Kf5 g6 44.Kg5 Ra4 45.Kh6 Kf6 46.Kh7 g5 47.Kh6 g4 48.Kh5 g3 49.Kh6 Rh4 0–1. elev – mlane, internet, 2013.

5.a4 Bd6

6.Ba3 0–0 7.Bd6 Qd6 8.h3 c5 9.Ne2 d4 10.c3 d3 11.Ng3 c4 12.Na3 Be6 13.Qb1 Nbd7 14.Qb2 b6 15.Rb1 Nc5 16.Qb4 Qd5 17.a5 Nfd7 18.ab6 (18.Kd1 a6 19.ab6 a5–+) 18...ab6 19.Nh5?? (19.Rd1–+) 19...Ra4 20.Qb2 (20.Nf4 Qa8 21.Qb2 Ra3 22.Ne6 Ne6–+) 20...Qh5 21.Ra1 (21.g4 Bg4! 22.Ra1 Ne5–+) 21...Rfa8 22.h4 (22.g4 Bg4! 23.Bg2 Bf3 24.Bf3 ef3–+) 22...Nb3 23.Ra2 Bg4 (23...Qc5 24.f3–+) 24.g3 (24.f3 Be6 25.fe4 Qc5–+) 24...Be2 (24...Qc5!? 25.f4–+) 25.Bg2 Bf3 (better is 25...Nf6!? 26.Bh3–+) 26.Bf3 Qf3 27.Rg1 (27.0–0–+) 27...Qe2 0–1. aleksandras19 – mbobo, internet, 2013.

6.Na3 0–0 7.c4 c6 8.Qb3 Be6 9.h3 Nbd7 10.d4 ed3! 11.Bd3 (11.Qd3 Nc5 Double attack (11...Nc5 Decoy); 11.Bd3 dc4 Double attack (11...dc4 Decoy)) 11...Nc5 12.Qc2 Nd3 13.Qd3 Ba3 (better is 13...dc4!? 14.Qc2 Bb4 15.Kf1 cb5 16.Nb5 a6–+) 14.Ba3 dc4 15.Qc2? (15.Qd8!? Rfd8 16.bc6 bc6 17.Be7–/+) 15...Re8 16.Nf3 (16.bc6 Qd5 17.cb7 Qg2 18.ba8R Ra8–+) 16...Qa5 17.Nd2 Rad8 18.Bc1? (better is 18.bc6 Bf5 19.Qa2–+) 18...cb5 19.f3 (19.0–0–+) 19...b4 20.0–0 (20.Qb1 c3 21.Nb3 Qe5–+) 20...c3 (better is 20...b3 21.Nc4 Qa6 22.Qb1 Bc4 23.Re1–+) 21.Nb3 Bb3 22.Qb3 Nd5 23.e4 Nb6 24.Be3 Rd3 25.Bf2 Red8 26.Rad1 (26.Rfd1–+) 26...Qa4 (26...Na4?! 27.Rd3 Rd3 28.Ra1–+) 27.Qa4 Na4 28.Ra1 (28.Rb1 a5 29.Rfc1 Nb2–+) 28...b5 29.Ba7 (29.Rab1 c2 30.Rb4 a6–+) 29...c2 30.Bf2 (30.Rac1 b3 31.Kf2–+) 30...Rd1 31.Be3 R8d3 (31...Ra1 32.Ra1 Rd1 33.Kf2 Ra1 34.f4–+) 32.Bf4 (32.Bc1 b3 33.Kf2 Rf1 34.Kf1 Rd1 35.Ke2 b2 36.Bb2 Ra1–+) 32...b3 33.Be5 (33.Bc1 b2 34.Bb2 Ra1 35.Ra1 Rd1 36.Kh2 Ra1 37.Ba1 c1Q–+) 33...Rf1 34.Kf1 Rd1 35.Rd1 cd1Q 36.Kf2 b2 (better is 36...Qd2 37.Kg1 Nc3 38.Kh2–+) 37.Bb2 Nb2 38.h4 Nd3 39.Kg3 Qd2 40.Kh3 Qf4 41.h5 Nf2 0–1. ateistawolnyx – mm1107 (1660), internet, 2013.

6.Nc3 –/+.

6.c4 c6 7.Qc2 0–0 8.c5 Bc7 9.Ne2 Nbd7 10.Nd4 Ne5 11.h3 Nh5 12.Be2 Qh4 (12...Qg5 13.Bf1+=) 13.Nc3 (13.0–0=) 13...Ng4 (better is 13...Qg5!? 14.g4 Nf6+=) 14.Bg4+/- Bg4 15.Rf1 (15.bc6 bc6 16.Nc6 Be6+/-) 15...Ng3?? (better is 15...Bd7+=) 16.Rg1+/- (16.hg4?! Nf1 17.Kf1 Qh1 18.Ke2 Qg2 19.bc6 Qg4 20.Ke1 bc6 21.Nc6 Qg1 22.Ke2 Qg4 23.Ke1 Qg1 24.Ke2 Qg4 25.Ke1=) 16...Bh5 (16...Bd7 17.fg3 Bg3 18.Kd1+/-) 17.bc6+– (17.fg3 Bg3 18.Kf1 Qf6 19.Nf3 ef3 20.Qh7 Kh7 21.h4 fg2 22.Kg2 Qf3 23.Kh3 Bg4) 17...bc6 18.Nc6 (18.fg3 Bg3 19.Kf1 Qf6 20.Nf3 ef3 21.Qh7 Kh7 22.h4 fg2 23.Kg2 Qf3 24.Kh3 Bg4) 18...Nf5 (18...Rfc8 19.Nd5 Bd8 A) 20.fg3 Qg3 21.Kf1 Bh4 (worse is 21...Rc6 22.Qe4 Bh4 23.Qf4+=) 22.Nce7 Kf8 23.Bg7 Qg7-/+; B) 20.Nd8?! Ne2 21.Nf7 Bf7 22.Nf6 gf6 23.Ke2 Rab8+–; C) 20.Qc3+–) 19.g4 d4 (19...Bh2 20.Rh1 Qh3 21.gh5 Qg2+–) 20.ed4 (20.gf5?! dc3 21.Bc3 f6+–; 20.gh5?! dc3 21.Qc3 f6+–; 20.Nd4?! Nd4 21.Qe4 Rad8 22.gh5 Qh5+/-) 20...e3 (20...Rfe8 21.gh5 (21.gf5 e3 22.de3 Re3 23.Kf1 Qh3 24.Rg2 Rc3 25.Qc3 Bf3 26.Qf3 Qf3+=) 21...e3 A) 22.Qf5?? ef2 23.Kd1 fg1Q (23...fg1B?! 24.Qg4 Qf6 25.Qg2+=; worse is 23...fg1N 24.Kc2 Ne2 25.Rf1 Nc3 26.dc3+/-; 23...fg1R?! 24.Kc2 Ra1 25.Ba1–+) 24.Kc2 Qhf2 25.Rg1 Qf5 (25...Qg1?! 26.h6-/+) 26.Kb3 Qh5–+; B) 22.de3 Ne3 23.Qd3 Ng4 24.Ne2 Qf2 25.Kd2 Re3 26.Ne7 Kh8-/+; C) 22.0–0–0 ef2 23.Rg4 (23.Qf5?! fg1Q 24.Rg1 Re1 25.Re1 Qe1 26.Kc2 Re8+–) 23...Qh5 24.Nd5+–) 21.Qf5 ef2 (21...Rae8 22.de3 Re3 23.Ne2 Bg6+–) 22.Qf2 Rfe8 23.Ne2 Re2 (23...Qf2 24.Kf2 Bg6 25.d5+–) 24.Ke2 Re8 25.Ne5 Be5 (25...Qe7 26.gh5 f6 27.Kd1 fe5 28.de5+–) 26.de5 (26.de5 Qf2 27.Kf2+–; 26.gh5? Bd4 27.Qe3 Re3 (27...Be3 28.de3 Qe4 29.Rg7 Kf8 30.Kf1 Qe3 31.h6–+) 28.de3 Qh5 29.Rg4 Bb2–+) 1–0. Jovanovic,Momir (2045) – Mack,Thomas (2105), Munich–ch VM2, 2005.

6.d4 0–0 7.Nd2 c5 8.c4 Be6 9.Ne2 a6 (9...dc4 10.dc5 Bc5 11.Nf4=) 10.Nf4 (10.cd5!? Bd5 11.dc5 Bc5 12.Nf4+=) 10...Bf4+= 11.ef4 dc4 12.Bc4 (12.dc5 Nbd7 13.Nc4 Nc5 14.Qd8 Rad8 15.ba6 ba6=) 12...Bc4 (better is 12...cd4!? 13.Be6 fe6–/+) 13.Nc4= ab5 14.ab5 Ra1 15.Ba1 Qc7 16.Ne5? (16.dc5!? Qc5 17.Qb3+=) 16...Rd8 (better is 16...Qa5 17.Ke2 Qb5 18.Ke3 Nc6 19.Nc6 Qc6–+ (worse is 19...bc6 20.Re1–+)) 17.0–0 cd4 18.Bd4 Qd6 19.Qb3 Qd4 20.Qf7 Kh8 21.h3? (better is 21.Qe6 h6 22.Nf7 Kh7 23.Nd8 Qd8 24.Ra1+=) 21...Nbd7–+ 22.Rc1 (22.Qe7 Ne5 23.Qe5 Qd7–+) 22...Ne5 23.fe5 Qe5 24.Qb7 e3 25.Rc8 (25.Qb6 Rd4 26.f4 Qf4–+) 25...Rc8 (better is 25...ef2 26.Kf2 Qf5 27.Qf3 Qc8–+) 26.Qc8 Ng8 27.fe3 Qe3 28.Kh2 Qe5 29.Kh1 Qb5 30.Qg4 h6 31.Kh2 Nf6 32.Qc8 Kh7 33.Qc2 Kh8 34.Qc8 Ng8 35.h4?? (35.Qg4 Ne7 36.Qe4–+) 35...Qe5–+ 36.Kh3 Qe3 37.g3 Qe5 38.Qg4 Nf6 39.Qc8 Kh7 40.Qc2 Qe4 41.g4 1–0. exterminator1 – franz77, internet, 2013.

6.d4 0–0 7.Nd2 c6 8.c4 Be6 9.Ne2 Qc7 (9...dc4 10.Nc3–/+) 10.Nf4 (better is 10.c5!? Be7 11.Nf4=) 10...Bf4–/+ 11.ef4 Qf4 12.g3 Qc7 13.Bg2 Nfd7 (13...dc4!? 14.0–0–+) 14.0–0 f5 15.f4? (15.Rc1–/+) 15...ef3?? (better is 15...dc4 16.Qe2 cb5 17.Ne4 fe4 18.Qe4 Qd6 19.ab5 Nf6 20.Qb7 Bd5–+) 16.Nf3+= Nf6 17.cd5 Bd5 18.Ne5 Ne4 19.Be4 Be4 20.Qb3 Kh8 21.Rac1 Bd5?? (21...a6=) 22.Qb4 (better is 22.Qd5! Rf6 23.Qc4+–) 22...Nd7 23.Nd7? (23.Qe7 Rad8 24.bc6 bc6 25.Rf2+=) 23...Qd7–/+ 24.bc6 Bc6 25.Ba3? (better is 25.Rc5!?–/+) 25...Qd5–+ (worse is 25...Ba4 26.d5–+) 26.Qc5?? (26.Rc6 bc6 27.Qc5–+) 26...Qg2 0–1. exterminator1 – kokotzila, internet, 2013.

6.Ne2 0–0 7.Nf4 Bf4 8.ef4 a6 9.g3 ab5 10.ab5 Ra1 11.Ba1 d4 12.Bg2 Bg4 13.Qc1 Re8 14.0–0 Be2 Black plans d3 15.Re1 Bb5 16.Na3 (better is 16.Qb2!? Ba4 17.Qd4 Qd4 18.Bd4+=) 16...Bc6–/+ 17.Qb2 d3 18.c3 Qd5 19.c4 Qc5 20.Rc1 Na6 21.Nb5 Ra8 22.Nd4 b6 23.Nc6 Qc6 24.Qe5 Nc5 25.Bd4? (better is 25.Re1–+) 25...Nb3 26.Re1 (26.Rb1 Re8 27.Rb3 Re5 28.Be5 Qa4–+) 26...Re8 (26...Nd2?! 27.Qf5 Rd8 28.Bf6 Qf6 29.Qh5–+) 27.Qf5 (27.Bc3 Re5 28.fe5–+) 27...Nd4 28.Qg5 Qc4 29.h4 (29.Kf1–+) 29...h6 30.Qf6 gf6 31.Be4 f5 32.f3 fe4 33.fe4 Nf3 34.Kf2 Ne1 35.Ke1 Re4 36.Kf2 Re2 37.Kf3 h5 38.g4 Qe4 39.Kg3 hg4 40.Kg4 Rg2 41.Kh5 Qg6 0–1. surmavlod – lutyk, internet, 2013.

6.Ne2 c6 7.Ng3 cb5 8.ab5 0–0 9.Nc3 Nbd7 10.Be2 Nc5 11.0–0 Bg3 12.hg3 h5 13.Na4 Ne6 14.Bh5 Nh5 15.Qh5 Ng5 16.Nc5 Qe7 17.Nb3 f6 18.Nd4 Bd7 19.f3 Be8 20.Qh4 ef3 21.gf3 Bd7 22.g4 Kf7 23.Nf5 Bf5 24.gf5 Rh8 25.Qd4 Qd6 26.f4 Rh3 27.Ba3 Qd7 28.Rf2 Rah8 29.Rg2 Nf3 30.Kf2 Nd4 31.ed4 Qb5 32.Bc1 Qc6 0–1. ventil (1675) – mirekg, internet, 2014.

6.Ne2 Bg4 7.h3 Bh5 8.Nbc3 c5 9.Qc1 0–0 10.Ng3 Bg3 11.fg3 d4 12.Ne2 d3 13.cd3 ed3 14.Nf4 Be2 15.Be2 de2 16.Ne2 Ne4 17.0–0 Nd2 18.Rd1 Nb3 19.Rd8 Nc1 20.Rf8 Kf8 21.Rc1 b6 22.Nf4 Nd7 23.Rd1 Nf6 24.g4 Ne4 25.Kf1 Re8 26.Ke2 h6 27.Nh5 g6 28.Nf4 Ng3 29.Kf3 Ne4 30.Rd7 f5 31.Ra7 fg4 32.hg4 Nd2 33.Ke2 Nc4 34.Bc1 g5 35.Ng6 Kg8 36.Ne7 Kf8 37.Nf5 Re6 38.Kd3 Ne5 39.Ke4 Ng4 40.Kd5 Rf6 41.e4 Nf2 42.Bb2 Rg6 43.Rb7 Nd3 44.Bc3 c4 45.Rc7 Nf4 46.Kd4 Ne2 47.Kc4 Nc3 48.Kc3 Re6 49.Kd4 1–0. ventil (1650) – mirekg, internet, 2014.

6.h3 0–0 7.Ne2 h6 8.Nd4 c6 9.Na3 a6 10.c4 ab5 11.ab5 Bc5 12.Nb3 Bd6 13.c5 Be7 14.d4 cb5 15.Nb5 Nc6?? (better is 15...Ra1 16.Qa1 b6+=) 16.Ra8+– Bg4 (16...b6 17.Be2+–) 17.hg4 (better is 17.Rd8 Bd1 18.Rf8 Kf8 19.Kd1 Ke8+–) 17...Bc5 (17...Qa8 18.Nc3 b6+–) 18.Rd8 Kh7 19.Nc5 (better is 19.Rf8!? Bf8 20.g5 Nd7+–) 19...Ng4 20.Rf8 1–0. ateistawolnyx – qfazimoto1300, internet, 2013.

6.h3 Nbd7 7.Nc3 0–0 8.g4 Ne5 9.g5 Be6?? (better is 9...Nfd7+=) 10.gf6+/– Qf6 11.Qe2 c6 12.h4?? (better is 12.Qh5+/–) 12...Bg4+= 13.Ne4 de4 14.Be5?? (better is 14.Qg4! Ng4 15.Bf6 Nf6 16.d4+=) 14...Qe5–+ (14...Be2?! 15.Bf6 Bf1 16.Kf1 gf6 17.d3 cb5 18.ab5=; 14...Be5?! 15.Qg4 Ba1 16.Qe4–/+) 15.Qg4 Qa1 16.Ke2 (16.Qd1 Qa4 17.bc6 Qc6–+) 16...Qa4 17.Bg2 (17.bc6 Qc2 18.Ke1 b5–+) 17...f5 18.Qg5 Qb5 19.Ke1 Qb1 20.Ke2 Qc2 21.Nh3 (21.f4 Rad8 22.Be4 fe4 23.Qa5 Qd3 24.Ke1 Qb1 25.Kf2 Bf4 26.ef4 Rf4 27.Nf3 Rf3 28.Ke2 Qd3 29.Kd1 Rd5 30.Qb4 Rf2 31.Kc1 Rc5 32.Kb2 Rc2 33.Ka1 Qa6 34.Qa3 Qa3 35.Kb1 Qb2) 21...Qd3 22.Ke1 Bb4 23.Nf4 Qd2 24.Kf1 Qd1# 0–1. dragonre – apucika43, internet, 2013.

5.a4 Be7

6.Nc3 0–0 +=.

6.c4 0–0 7.cd5 (7.f3 c6+=) 7...Nd5 8.Bc4 (8.Nc3 Bf5+=) 8...Be6 9.Bd5 Qd5 10.Nc3 Qf5 (10...Qd3 11.Nge2+=) 11.Nge2= a5 (11...Bf6 12.Qc2 Qg4 13.Ng3 Bc3 14.Qc3+=) 12.Ng3 (12.Qb1 Bh4 13.Ne4 Be7+/-) 12...Qg6 13.0–0 (13.Nce4!? Bd5 14.Qf3+=) 13...f5 (13...Bc4 14.Nge4 Bf1 15.Qf1+=) 14.Nce2 Bc4 (14...Bd6 15.Ba3 Bc4 16.Bd6 Qd6 17.f3=) 15.Nf4 (better is 15.Rc1 Be2 16.Qe2+=) 15...Qg4?? (better is 15...Qf7 16.d3 ed3 17.Nd3 Rd8=) 16.Qg4+– fg4 17.Rfc1 (17.Ne4?! Bf1 18.Rf1 Rf7+=) 17...g5 18.Rc4 (18.Nfh5 Bd3 19.Rc7 Rf7 20.Rc8 Rf8+–) 18...gf4 19.Ne4 (better is 19.ef4 c6 20.Re4+– (20.Ne4?! Rf4 21.Be5 Rf5+–)) 19...fe3? (19...c6 20.Nc3+–) 20.de3 (better is 20.Rc7!? ef2 21.Nf2 Rf7 22.Ng4 Bg5+–) 20...c6 21.bc6 (21.Ng3 cb5 22.Rg4 Kf7 23.Rg7 Ke8+–) 21...Nc6 22.Rd1 (22.Ng3 Rad8+–) 22...Rac8? (better is 22...h5!?+/-) 23.Nd6+– Bd6 24.Rg4 (24.Rd6?! Ne5 25.Re4 Rc2 26.Re5 Rb2 27.Rg5 Kf7+/-) 24...Kf7 25.Rd6 Ne5 (25...Rfd8 26.Rg7 Kf8 27.Rd8 Nd8 28.Rh7+–) 26.Rf4 (26.Rh4 Rfd8 27.Rd8 Rd8+–) 26...Ke7 (26...Kg8 27.Rf8 Kf8 28.Rd5+–) 27.Rf8 Rf8?? 28.Be5 Rc8 29.Kf1 Rc1 30.Ke2 Rc2 (30...Rc2 31.Kf3 Rc4+–; 30...Rc4 31.Rd4 Rc2 32.Kf3+–). Cornacchini,Gabriele – D'Emilia,Jack, RL–2007–0–00088, 2007.

6.c4 c6 7.Nc3 0–0 8.Be2 a6 (8...dc4 9.f3 Nbd7 10.fe4+=) 9.d4 (9.cd5 cd5 10.d4 Qb6+=) 9...ed3–/+ 10.Bd3 ab5 (10...dc4 11.Bc4 Qc7 12.Nge2 cb5 13.Nd5 Nd5 14.Bd5 Qa5 15.Kf1–/+) 11.ab5 (11.cb5 Nbd7+=) 11...Ra1 12.Ba1 Bg4 (12...dc4 13.Bc4 Qa5 14.Qa4 Qa4 15.Na4+=) 13.Nf3= Nbd7 (13...dc4 14.Bc4 Qd1 15.Kd1=) 14.bc6 bc6 15.0–0 Ne5 (15...Qa5 16.cd5 cd5 17.Nb5=) 16.Nd5 Nf3 17.gf3 Bf3?? (better is 17...Bh3 18.Ne7 Qe7=) 18.Ne7+– (18.Qf3?! cd5 19.Rd1 g6+/–) 18...Qe7 19.Qf3 Rd8 (19...c5 20.Rb1+–) 20.Rd1 Nd7 (20...Rd6 21.Bd4 Re6 22.Bf5+–) 21.Bc2 f6 (21...Nf8 22.Rd8 Qd8 23.Qg2+–) 22.Qc6 Ne5 23.Rd8 Qd8 24.Be5 fe5 25.Qe6 Kh8 (25...Kf8+–) 26.Qe5 (better is 26.c5 Qa8+–) 26...Qd2 27.Qe8 1–0. Janek – esson, internet free game, 2017.

6.c4 c6 7.Nc3 Be6 8.cd5 cd5 (8...Bd5 9.Nd5 (9.f3 0–0 10.Qc2 Re8 11.fe4 Ne4 12.Nd5+=; 9.Qc2 0–0 10.f3 Re8 11.fe4 Ne4 12.Nd5+=; 9.d3 Qa5 10.Nge2 0–0 11.Qd2 ed3 12.Nf4+=; 9.Nge2 0–0 10.Nf4 Nbd7 11.Rc1 Bd6 12.Nfd5=) 9...cd5 10.Rc1 Nbd7 11.Ne2 0–0 12.Nd4=) 9.Nge2 (9.d3 Nbd7 10.Nge2 Bg4 11.de4 de4 12.h3=; 9.f3 Nbd7 10.Nge2 ef3 11.gf3 0–0 12.Nd4+=) 9...0–0 (9...Nbd7 10.Nd4 0–0 11.Be2 Rc8 12.0–0=) 10.Nd4 Nbd7 11.Be2 Rc8 (11...Ne5 12.0–0=) 12.0–0 Ne5 (12...Bc5!?=) 13.Ne6 fe6 14.Ne4 Ne4 (14...de4 15.Be5; 14...Ne4 15.Be5) 15.Be5 Bf6 16.Bf6 Qf6 17.d3 Nd6 (17...Nf2? 18.Qe1 Qe5 19.Rf2 Rf2 20.Kf2 Qh2 21.Qb4+–) 18.Qd2 Rc7 19.Rab1 b6 20.Bg4 Qg6 21.Be2 e5 (better is 21...Qf6!?=) 22.Rbc1+/– Rff7 23.Rc7 Rc7 24.Bf3 Qe6 25.Rc1 Rc5 26.Rc5 bc5 27.Qa5 e4 28.de4 de4 29.Bd1 Qd7 30.Qc3 Nb7? (30...Nf7 31.Bb3 Qe7+–) 31.Bb3 Kh8 32.Qc4 Qe8 33.Qd5 Na5 34.Bc2 (34.Qc5?! Nb3 35.Qa7 Kg8+/–) 34...c4 35.Be4 (35.Qe4?! Qe4 36.Be4 Nb3+–) 35...c3 (35...Qc8 36.Qf7 Qb8 37.f4+–) 36.g3 Qc8 37.Bf5 Qb8 38.Qc5 Qd8 39.Qc3 Qd1 (39...Nb7 40.f4+–) 40.Kg2 Qd5 41.f3 (better is 41.e4!? Qd8+–) 41...Qf5 42.Qa5 Qc2 43.Kh3 (better is 43.Kg1 h6+–) 43...Qf5 44.Kg2 Qc2 45.Kf1 Qd1 46.Qe1 (better is 46.Kf2!? Qc2 47.Ke1 Qc1 48.Ke2 Qc2 49.Qd2 Qc4 50.Qd3 Qa2 51.Kf1 h5+–) 46...Qf3 47.Qf2 Qd1 48.Kg2 Qd5 49.Qf3 Qa2 50.Kh3 Qe6 51.Qg4 Qh6 (51...Qe8 52.e4+–) 52.Qh4 (better is 52.Kg2 Kg8 53.Qc8 Kf7 54.Qb7 Ke8 55.Qb8 Kd7 56.Qa7 Ke8 57.Qa8 Kd7 58.Qd5 Kc7 59.Qc5 Kd7 60.a5+–) 52...Qe6 53.Qg4 Qh6 54.Kg2 g5 55.Qc8 Kg7 56.Qd7 Kg8 57.Qa7 1–0. Fourcart,Maxence – Platel,Alexandre, FRA–chJM7 France, 1998.

6.c4 c6 7.d3 Bg4 (7...dc4 8.dc4 Nbd7 9.Nc3–+) 8.Ne2 (8.Be2 Be6+=) 8...Bb4 (8...ed3 9.Qd3 Nbd7 10.bc6 bc6 11.cd5+=) 9.Bc3+= Qa5 (9...a5 10.h3 Be6 11.cd5 Bd5 12.Nf4+=) 10.Qb3 Bc3 11.Qc3 Qc7 (11...Qc3 12.Nec3 ed3 13.cd5 cd5 14.h3=) 12.h3 (12.cd5 ed3 13.Nf4+–) 12...Be2 (12...Be6 13.cd5 Bd5 14.de4 Be4 15.Nd2=) 13.Be2 0–0 14.0–0 Nbd7 15.Qc2 (15.d4=) 15...Rae8 (better is 15...ed3!? 16.Bd3 dc4 17.Bc4 Rac8=) 16.cd5+/– Nd5 (16...Qe5 17.bc6 (17.dc6?! Qa1 18.cd7 Nd7=) 17...bc6 18.d4 (18.dc6?! Qa1 19.cd7 Rb8=) 18...Qd5 19.Rc1+/–) 17.de4 cb5 18.Qc7 Nc7 19.ab5 Ra8 20.Nc3 a6 21.ba6 ba6 (21...Na6 22.f4+–) 22.Nd5 Ne6 23.Ra5 Nec5 (23...Ndc5 24.Ne7 Kh8 25.e5+–) 24.f3 Rfb8 25.Rd1 Kf8 26.Nc7 Ra7 27.Na6 Na6 28.Ra6 Ra6 29.Ba6 (29.Rd7?! Rc6=) 29...Ke7 30.Kf2 f6 31.Bc4 Rc8 32.Bd5 Nb6 (32...Rc2 33.Kf1+–) 33.Rd4 (33.Rd2 Rc5+–) 33...Rc5 (33...Rc2 34.Kg3+–) 34.Kg3 (34.Bg8 Rc2 35.Kg3 h6+–) 34...Rc3 (better is 34...g5+–) 35.Kf2 (35.Rb4 Nd7+–) 35...Rc2?? (35...Rc5 36.Ke2 h5+–) 36.Kf1+– Rc3 (36...Rb2 37.Bg8 h5 38.Rd3+–) 37.Ke2 Rc2 38.Rd2 Rd2 (38...Rc5 39.Bb3+–) 39.Kd2 Kd6 40.Bg8 h6 41.Ke2 Ke5 (41...Kc5 42.Kd3+–) 42.Kf2 (42.Kd3 g5+–) 42...g5 43.Bh7 Nc4 44.g3 Nd6 45.f4 Ke6 46.Kf3 Kf7 47.h4 gh4 48.gh4 Nc4 49.h5 Nd2 50.Ke2 Nc4 51.Kd3 Nb2 52.Kd4 White plans e5 52...Nd1 53.Bg6 Ke7 54.Bf5 Nb2 (54...Kd6+–) 55.e5 fe5 56.Ke5 Nc4 57.Kd4 Nd6 58.Bg6 Kf6 (58...Nb5 59.Ke5 Nd6+–) 59.e4 Nc8 (59...Ke7 60.f5 Nb5 61.Ke5+–) 60.f5 (better is 60.e5 Ke7 61.f5+–) 60...Ne7 (60...Ke7 61.e5 Nb6 62.f6 Ke6+–) 61.e5 Kg5 62.Kc5 (62.Kc5+–) 1–0. Isler,Benjamin – Weck,Uwe (1690), Kiel GER, Open–B, 2014.

6.Ne2 0–0 7.Ng3 c6 8.c4 Bd6 9.Nc3 Bg3 10.hg3 d4 11.ed4 Qd4 12.Be2 Nbd7 13.Rb1 Nc5 14.a5 Nd3 15.Bd3 Qd3 16.Ne2 Bg4 17.Rh4 Be2 18.Qc1 Bg4 19.f3 ef3 20.Rg4 Qe2 0–1. ventil – tonildo, internet, 2014.

6.h3 0–0 7.Ne2 c6 8.Na3 Be6 9.Nd4 Nbd7 10.Ne6 fe6 11.d4 Bb4 12.c3 Bd6 13.Be2 e5 14.0–0 ed4 15.ed4 Qe7 16.c4 a6 17.c5 Bb8 18.b6 Bf4 19.Nc2 Rad8 20.a5 Bb8 21.Ra3 Qf7 22.Bc1 Qg6 23.f4 ef3 24.Raf3 Ne4 25.Rf8 Rf8 26.Rf8 Nf8 27.g4 Nc3 28.Qd3 Ne2 29.Qe2 Ne6 30.Kf2 Nf4 31.Bf4 Bf4 32.Ne3 Qe4 33.Nf5 g6 34.Qe4 de4 35.Ne3 Kf7 36.h4 Ke6 37.g5 Be3 38.Ke3 Kd5 39.Kf4 Kd4 40.Kg4 e3 41.h5 Kd3 42.hg6 hg6 43.Kf4 e2 44.Ke5 e1Q 45.Kf6 Qe4 46.Kf7 Qf5 47.Ke7 Kd4 48.Kd8 Qg5 49.Kc7 Qe7 50.Kb8 Qd8 51.Kb7 Qe7 52.Ka6 Qc5 53.b7 Qb5 54.Ka7 Qa5 55.Kb8 Qb5 56.Kc8 1–0. ateistawolnyx – hegtor, internet, 2014.

5.Nc3 Bb4

6.a3 Ba5 7.Nge2 0–0 8.Nd4 Re8 9.Nb3 Bb6 10.Na4 a6 11.Nb6 cb6 12.Be2 ab5 13.Nd4 Bd7 14.Nb5 Bb5 15.Bb5 Nc6 16.0–0 Ra5 17.a4 Nd7 18.d3 ed3 19.cd3 Na7 20.Qg4 g6?? 21.Bc3 Nb5 22.Ba5 Nd6 23.Bb4 Ne5 24.Qg3 Nf5+/– 25.Qf4?? Nd3–+ 26.Qg4 h5 0–1. slowcooker – Strac59, Live Game Caissa's Web, 2004.

6.a3 Bd6 7.Nge2 0–0 8.Ng3 Nbd7 9.Be2 Ne5 10.d3 ed3 11.cd3 Re8 12.0–0 Be6 13.Rc1 Rc8 14.Qa4 a6 15.ba6 ba6 16.d4 (16.Qa6? Ra8 17.Qb5 Rb8–+ (17...Ba3 18.Ba3 Ra3 19.d4+/-)) 16...Nc4 17.Bc4 dc4 18.Qa6 Rb8 19.Rc2 Ng4 20.d5 Bg3 21.hg3 (21.fg3 Ne3 (21...Bd5?! 22.Bc1+=) 22.Re2 Bc8–+ (worse is 22...Bd5 23.Rfe1-/+)) 21...Bf5 22.e4 Qg5 23.Re1 (23.ef5?? Qh5 24.Qh6 Qh6 25.Rb1 Qh2 26.Kf1 Qh1) 23...Qh5 24.Qa7 Qh2 25.Kf1 Ne5 26.f4 Nd3 27.Rd1 Rb6 28.Rd3 cd3 29.Rd2 Qg3 30.Qa4 Reb8 (30...Qf4?! 31.Rf2 Qe5 32.Rf5=) 31.Qd4 Rb2 32.Qd3 Qf4 33.Ke1 Bg4 34.a4 (34.d6–+) 34...R8b3 35.Rb2 Rb2 0–1. Hohlstein,Walter (2080) – Dammer,Axel (2400), RSX7E – A00 – Sokolsky–1, 2008.

5.Nc3 Bd6

6.d3 0–0 7.de4 de4 8.Bc4 Nbd7 9.Nge2 Qe7 10.Nd5 Nd5 11.Bd5 Rd8 12.0–0 a6 13.Ng3 Nb6 (13...ab5 A) worse is 14.Ne4 Be5 15.Ng5 Bh2 (15...Qg5?! 16.f4 Qg6 17.fe5 Ne5 18.Rf7+=) 16.Kh2 Qg5-/+; B) 14.Nf5 Bh2 15.Kh2=) 14.c4 (14.Qd4 Qf8 15.ba6 Ra6-/+ (15...Nd5?! 16.Qd5 Ra6 17.Qe4=)) 14...Nd5 15.cd5 ab5 16.Qd4 f5 17.Rfd1 b4 18.Nh5 c5 (18...Rd7 19.Nf4-/+) 19.Qg7 Qg7 20.Bg7 Kf7 21.Bb2 Ra5 22.a3 (22.Bf6!? Rd7 23.Bb2–+) 22...ba3–+ 23.Ra3 Ra3 24.Ba3 b5 25.Ng3 (better is 25.Bb2!?–+) 25...b4 26.Bc1 c4 27.Ne2 Be5 28.Nd4 (28.f4 Bf6–+) 28...Rd5 29.f3 c3 30.Re1 (30.Rf1 Rd4 31.ed4 Bd4 32.Kh1 e3–+) 30...Bd4 31.fe4 Ra5 0–1. Sawamura,Tetsushi – Miciak,Emanuel (2410), olm15 qual GP3 B6 email, 2003.

6.Nd5? Nd5–+ 7.Bg7 Rg8 8.Bh6? (8.Bb2–+) 8...Qf6 9.Bc4 (9.Bf4 Bg4 10.Qb1 Nf4 11.ef4–+) 9...Rg2 10.Bf4 Nf4 11.Ne2 (11.ef4 Qd4 12.Bf7 Kf8 13.Nh3 Bh3 14.Rf1 Rf2 15.Rf2–+) 11...Nd3! 12.cd3 (12.Bd3 Qf2#) 12...Qf2 0–1. rayner_51 – mrkt, ChessWorld.net, 2003.

6.g3 Nbd7 7.Bg2 Ne5 8.Nge2 (8.d3 ed3 9.cd3 Bf5–/+) 8...Bg4 9.0–0 Nf3 10.Kh1 h5 11.d3? (better is 11.h4–/+) 11...h4–+ 12.h3 hg3 13.Ng3 Bh3 14.Bf3 Bg4 (14...ef3 15.Qf3 Bg4 16.Kg2 Bf3 17.Kf3–+) 15.Kg1 Bf3 16.de4 (16.Nce4 de4 (16...Ne4?! 17.Qf3 Qh4 18.Qg2–/+; 16...Be4 17.de4 Bg3 18.fg3 Ne4 19.Qg4–/+) 17.Qd2 Qd7 18.Qb4 Qh3 19.Qe4 Ne4 20.Ne4 Qg2#) 16...Bd1 17.Rad1 (17.Rfd1 Bg3 18.fg3 Qd7 19.Nd5 Qg4 20.Nf6 gf6 21.Kf2 Rh2 22.Kg1 Qg3 23.Kf1 Qf2#) 17...Qd7 18.Kg2 Qh3 19.Kf3 Qg4 20.Kg2 Bg3 21.fg3 Ne4 22.Ne4 Qe4 (23.Rf3 Qc2 24.Rf2 Qd1–+) 0–1. RVJ1943 – mrkt, ChessWorld.net, 2002.

5.c4 Bb4

6.a3 Ba5 7.Qb3 Be6 (7...dc4 8.Bc4 0–0 9.f3+=) 8.cd5= Bd5 9.Bc4 (9.Qa4 c6 10.Nc3 Nbd7=) 9...Bc4 10.Qc4 0–0 11.Ne2 Nbd7 (better is 11...Re8+=) 12.Nbc3? (better is 12.0–0!?+=) 12...Ne5–+ 13.Qb3 b6 (better is 13...Nd3!? 14.Kf1 Bc3 15.Nc3 Qd7–+) 14.0–0+= Nd3 (14...a6 15.a4+=) 15.Nd4 (better is 15.f3=) 15...Qd7 (better is 15...Nc5 16.Qc2 a6=) 16.Ne4!+/– Ne4 17.Qd3 Nd2 (17...Rfe8!?+/–) 18.Rfd1+– Rfd8 (18...f5 19.Rd2 Bd2 20.Qd2+–) 19.Bc1 (19.Rd2?! Bd2 20.Qd2 Qb5+/–) 19...Qb5 (19...a6 20.a4 h6+–) 20.Qb5 (20.Nb5?! Rd3 21.Bd2 Rad8=) 20...Ne4 21.Bb2 (21.Qc6 Nc3 22.Rd3 Rac8+–) 21...Bc3 22.Qb3 c5 (22...Bd4 23.Rd4 Nc5 24.Qc3+–) 23.Bc3 cd4 24.Bd4 h6 (24...Ng5 25.Rac1+–) 25.Rac1 Rd6 (25...Ng5 26.Be5+–) 26.Rc7 Ng5 27.Rdc1 (27.Be5 Rg6 28.f4 Nf3 29.Kh1 Ne5 30.fe5 Rf8+–) 27...Rad8 28.Rc8 (28.Ra7 Ne6+–) 28...Ne4 29.Rd8 Rd8 30.Rc7 Nd6 31.Qd5 Kh7 32.h3 (32.Qe5 Rg8 33.Qd6 Re8 34.Rf7 Rg8 35.Qf6 b5 36.Rg7 Rg7 37.Qg7) 32...a6 33.Qe5 f6 34.Qf6 Nf5 (34...Rd7 35.Rd7 Nf5 36.Qf5 Kg8 37.Rd8) 35.Qf5 (35.Rg7 Ng7 36.Qg7) 35...Kg8 (35...Kh8 36.Rg7 Rd4 37.Qf8) 36.Rg7 Kh8 37.Qh7 1–0. jaddwarrior (1980) – TWODOGS, ChessWorld.net, 2015.

6.a3 Ba5 7.cd5!? 0–0 8.Qa4+=.

6.a3 Ba5 7.f3 (7.cd5!? a6 8.Bc3 Bc3 9.Nc3+=) 7...0–0 8.cd5 Nd5 9.Bd4 Re8 10.Qa4 c5 11.Bc5 Nd7 12.Bd4 ef3 13.Nf3 (13.Kd1 fg2 14.Bg2 Nf8+=) 13...Ne3–/+ Black creates threats along the open e–file 14.Be3 Re3 15.Kf2 Nc5 16.Qc4 Be6 17.Qc5 Rf3! 18.gf3 If White now only could play Ke2.... Theme: Blockade (18.Kf3 Decoy theme: f3 18...Qf6 A double attack) 18...Bb6 A pinning theme 19.Qb6 Qb6 (worse is 19...ab6 20.Nc3 Qd2 21.Ne2–+) 20.Ke1 (20.Kg2–+) 20...Qd4 21.Nc3 Re8 22.Be2 Bc4 23.Rc1 Be2 24.Ne2 Qd3 25.Kd1 Qe2 26.Kc2 Re3 27.Rb1 (27.b6 Qc4 28.Kd1 Qa4 29.Rc2 Ra3 30.ba7–+) 27...Qd3 28.Kc1 Re8 29.Kb2 (29.Rb4 Qa3 30.Rb2 Qa1 31.Kc2 Qh1 32.Rb3 Qh2 33.Rc3 Qf4 34.Kb3 Qd4 35.Kc2 Qa4 36.Rb3 Qc4 37.Kb2 Re1 38.Rc3 Qb5 39.Rb3 Rb1 40.Kb1 Qb3 41.Kc1 Qf3 42.Kc2 h5 43.Kc1 h4 44.d4 h3 45.Kc2 h2 46.d5 h1Q 47.Kb2 Qhg2 48.Kc1 Qff1) 29...Qd2 30.Kb3 Re3 31.Ka4 Black now must not overlook the idea Rhc1 31...Qc2 32.Ka5 Ra3 33.Kb4 Qc3 0–1. Pierre (2175) – Grisgris (2660), Friendly Game, 3m + 0s, 2005.

6.Qa4 Bd6 7.cd5 Bf5 (7...Nbd7 8.Bf6 Nf6 9.Nc3=) 8.Ne2 0–0 9.Ng3 Bg6 10.Nc3 Increases the pressure on e4 10...Be5 11.Bc4 Nbd7 12.0–0 Nb6 The pressure on d5 grows 13.Qb3 Qd7 14.f4 Bd6?? (better is 14...ef3 15.Rf3 Nc4 16.Qc4 a6 17.ba6 Ra6=) 15.Nce2+– (15.Nce2 Nh5 16.Nh5 Bh5 17.Ng3+/–) 1–0. Hohlstein,Walter (2080) – Maly,Guenther (1740), RSX7E – A00 – Sokolsky–1, 2008.

6.Nc3 d4 7.Nce2 d3 8.Nc3 0–0! 9.a4 Bf5 10.Qb3 Ba5 11.h3 Nbd7 12.g4 Bg6 13.f4 h6 14.f5 Bh7 15.0–0–0 Nc5 16.Qa2 a6 17.Bg2 Re8 18.Nd5 Nd5 19.cd5 c6 20.Qc4 cd5 21.Qc5 ab5 22.Qd4 f6 23.h4 Rc8 24.Kb1 ba4 25.Qa4 b5 26.Qd4 Qd6 27.g5 fg5 28.Qg7 1–0. varin123 – ferdynand7, internet, 2014.

5.c4 dc4

6.Bc4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bd7 10.Qb3 c6 11.Bf7 Ke7 12.Bc4 cb5 13.Bb5 Bb5 14.Qb5 Kf7 15.Ne2 Be7 16.0–0 Re8 17.Nbc3 Kg8 18.Qb2 Qc7 19.Ne4 Ne4 20.Qg7 1–0. bauska18 – bialymotyl, internet, 2014.

6.Bc4 Bc5 7.Ne2 0–0 8.0–0 Be6 9.Be6+/– fe6 10.Nf4 Re8 (10...Qd7 11.Bf6 Rf6 12.Nc3+/–) 11.Qc2 (11.Bf6 Qf6 12.Nc3 Nd7 13.Ne4 Qf5 14.Nc5 Qc5+–) 11...Nbd7 (11...Bd6 12.Bf6 Qf6 13.Nc3 Bf4 14.Ne4 Bh2 15.Kh2+=) 12.Nc3 e5 (12...a6 13.Ne4 Ne4 14.Qe4+/–) 13.Qb3+– Kh8 14.Ne6 Re6 15.Qe6 Nb6 (15...Bf8 16.Qc4 Nc5 17.Ba3+–) 16.Qe5 Qd2?? (16...Bd6 17.Qe6 Qg8 18.Qg8 Kg8+–) 17.Ne4 Qb2 (17...Qd3 18.Nf6 Bd6+–) 18.Qb2 (18.Qb2 Ne4 19.Qe5+–) 1–0. DEFFM – GuestGSNX, freechess.org, 2018.

6.Bc4 Be7 7.Qb3 0–0 8.Ne2 c6 9.a4 cb5 10.ab5 b6 11.Ng3 Nbd7 12.0–0 Bb7 13.Rd1 Nc5 14.Qc2 Nd3 15.Bd3 ed3 16.Qb3 Rc8 17.Ra7 Rc7 18.Nc3 Qb8 19.Rda1 Rd8 20.Nf5 Bc5 21.R7a4 Qc8 22.f3 Qf5 23.Rf4 Qg5 24.Nd1 Be7 25.Nf2 Bc8 26.Nd3 Rcd7 27.Rd4 Rd4 28.Bd4 Be6 29.Qc3 Bh3 30.g3 Qd5 31.Kf2 Rc8 32.Qb2 Be6 33.Ra7 Bc5 34.Nf4 Bd4 35.Qd4 Qd4 36.ed4 Bc4 37.Rb7 Bb5 38.Rb6 Bc4 39.d3 Ba2 40.Ke3 Re8 41.Kd2 Be6 42.d5 Nd5 43.Nd5 Bd5 44.f4 Rd8 45.Kc3 Bg2 0–1. olawoj – ironmann26, internet, 2014.

6.Bc4 Be7 7.Ne2 0–0 8.0–0 c6 9.a4 a6 10.Qb3 Qc7 11.Nbc3 Ng4 12.Ng3 h5 13.Nce4 h4 14.f3 Nh6 15.Ne2 h3 16.g3 Nd7 17.Qc3 Nf6 18.Nf6 Bf6 19.d4 c5 20.Ba3 Re8 21.Bc5 b6 22.Ba3 a5 23.Rac1 Bb7 24.e4 g6 25.Nf4 Rac8 26.Bb2 Kg7 27.Nd5 Bd5 28.Bd5 Qc3 29.Bc3 Rc7 30.Kh1 Rec8 31.Bd2 Bd4 32.Rc6 Ng8 33.Rd1 Ne7 34.Bf4 Nc6 35.Bc6 Bf6 36.Bc7 Rc7 37.f4 Be7 38.e5 Bc5 39.Rd7 Rd7 40.Bd7 Kf8 41.Bh3 Ke7 42.g4 f6 43.ef6 Kf6 44.Kg2 Kg7 45.Kf3 Bd4 46.Ke4 Bc5 47.f5 Kf7 48.fg6 Kg6 49.Kf4 Kf6 50.g5 Kg6 51.Kg4 Bd6 0–1. lllllll21 – rootsorter, internet, 2013.

6.Bc4 Bg4 7.Ne2 (7.Bf6 Qf6 8.Qg4 Qa1 9.Qe4 Be7 10.Qb7 Qb1 11.Ke2 0–0 12.Qa8 c6 13.Qa7 Qb4+–) 7...Qd6 (7...Nbd7!?+=) 8.Qb3 Be2 ½–½. DEFFM – guestATB, freechess.org, 2016.

6.Bc4 Bd6

7.Qc1 0–0 8.Ne2 Be6 (8...Nbd7 9.Qc2–/+) 9.Ng3? (9.Be6 fe6 10.Qc4 Qe7=) 9...Bc4 (better is 9...Nbd7!?–/+) 10.Qc4= Bg3 11.fg3 Nbd7 12.0–0 Nb6 13.Qb4 (13.Qb3 Nbd5=) 13...Nbd5+= 14.Qc4 a6 15.Bf6 (15.Nc3 ab5 16.Nb5 Ra6+=) 15...Nf6–/+ (worse is 15...gf6 16.Qe4 Re8 17.Qg4 Kh8 18.Na3+/–) 16.Nc3 (16.Rf2!?–/+) 16...ab5–+ 17.Nb5 c6 (better is 17...Qd2!? 18.Qc1 Qa5–/+) 18.Nd4+= h6 19.a4 Nd5 20.Qc2 (20.Nb3 Re8=) 20...Qe7 (20...Re8 21.Qb2 Qc7 22.a5+=) 21.Nf5 Qg5 (better is 21...Qe5!?=) 22.Qe4+/– Rfe8 23.Qd4 (23.Qc4 Re6+/–) 23...Nf6 (23...Rad8 24.h4 Qf6 25.Qc4+/–) 24.Qb2 b5 (better is 24...Rad8+/–) 25.Nd6?? (25.ab5 Ra1 26.Qa1 (26.Ra1?! Qf5 27.bc6 Rc8+=) 26...cb5 27.Qb2+–) 25...Red8+= 26.Rf5?? (26.ab5 Ra1 27.Ra1 Rd6 28.Ra8 Kh7 29.b6+=) 26...Qg6–+ (26...Qg6 27.Rf6 Qf6 (27...gf6?! 28.Nb7 Rd5 29.a5–/+) 28.Qf6 gf6–+) 0–1. GuestPDCC – guestkicker, freechess.org, 2017.

7.Qc2 Nbd7 8.f3 Ne5 9.fe4 Nfg4 10.Be2 Qg5 11.Nh3 Qh4 12.Kf1 0–0 13.Nc3 Be6 14.Nd5 f5 15.Ndf4 fe4 16.Qe4 Bc8 17.Kg1 Nf6 18.Qd4 Rf7 19.Rf1 Qh6 20.Nf2 Kh8 21.Ne4 Ne4 22.Qe4 Nd7 23.Nh5 Re7 24.Qh4 b6 25.Bc4 Ba6 26.ba6 Ne5 27.Qf2 Nd7 28.Ng3 Bg3 29.hg3 Qg6 30.Qf4 Rc8 31.Rh6 Qe4 32.Qg5 Re5 33.Be5 Ne5 34.d3 Qg6 35.Rg6 1–0. bambinik – Atheistes, internet, 2001.

7.d3 0–0= 8.Nc3 (8.Nd2 ed3 9.Bd3 a6 10.a4 ab5+=; 8.Ne2 Nbd7 9.de4 Ne4 10.Qc2 Qh4+=) 8...Bg4 (8...ed3 9.Qd3 Nbd7 10.Nf3 Nb6=) 9.Nge2 ed3 10.Bd3 Nbd7=.

7.Ne2 Nbd7 8.d4 (8.d3 ed3 (8...Nb6 9.Bd4 Nc4 10.dc4 a6 11.Nd2 ab5=) 9.Bd3 Ne5 10.Bd4 0–0 11.0–0 a6+=) 8...ed3 (8...Nb6 9.Bb3 a6 10.Nbc3 ab5 11.Qc2 0–0+=; 8...0–0 9.Nbc3 Nb6 10.Bb3 Re8 11.0–0 Be6+=) 9.Qd3 (9.Bd3 Ne5 10.Bc2 a6 11.ba6 Ra6+=) 9...Nb6 10.Nbc3 (10.Nd4 Nc4 11.Qc4 Ng4+=) 10...Nc4 11.Qc4 Be6 12.Qd3 0–0 13.Rd1 Ng4 14.h3 Qh4 15.g3 Qh5 16.Qe4 Ne5 17.Nd4 (17.Nf4!? Nf3 18.Ke2 Nd4 19.Kf1 Bf4 20.Rd4=) 17...Bc4+= 18.g4 Qg6 19.Nf5 Rfe8 20.Qb7 Nd3 21.Rd3 Bd3 22.Qd5 Bf5 (22...Bf5 23.gf5 Qf6–/+) 0–1. Merten,Josef – Marth,Stefan, BdF, 1995.

7.Ne2 Bg4 8.h3 Bh5 9.g4 Bg6 10.Ng3 0–0 11.Nc3 Bg3 12.fg3 Qd6 13.Rg1 h5 14.g5 Nfd7 15.Ne2 Ne5 16.Be5 Qe5 17.Nf4 Nd7 18.Ng6 Qg5 19.Nf8 Rf8 20.Qb3 Ne5 21.Kd1 Nf3 22.Rg2 b6 23.Kc2 Qd8 24.Bd5 c6 25.Be4 Ne5 26.bc6 Qf6 27.d4 Nc6 28.Bc6 Qc6 29.Kd3 Qg2 30.g4 Qh3 31.gh5 Qh5 32.Qa4 a5 33.Qc6 Qf5 34.Kc3 Rc8 35.Qc8 Qc8 36.Kd2 Qc4 37.Rc1 Qa2 38.Rc2 Qb3 39.Rc3 Qb2 40.Kd3 a4 41.Rc8 Kh7 42.Rc7 Kg6 43.Rc6 f6 44.d5 a3 45.Rc2 Qb5 46.Ke4 a2 47.Ra2 Qc4 48.Kf3 Qa2 49.e4 Qb3 50.Kf4 Qd3 51.e5 fe5 52.Ke5 b5 53.d6 b4 54.Ke6 Qe4 55.Kd7 Qf5 56.Kc7 Qf7 57.d7 b3 58.Kc8 Qc4 59.Kb8 Qb4 60.Kc8 b2 0–1. avinoam (1635) – mirekg, internet, 2013.

7.Bf6 gf6?! 8.Nc3 f5 9.Qb3= Qf6 10.d4 Rg8 =.

7.Bf6 Qf6 8.Nc3 Qg6 9.Bd5 f5 (worse is 9...Qg2 10.Be4 Qg5 11.Qf3+/–) 10.g4 fg4 (10...Be5=) 11.Nge2 Nd7 12.Ne4 a6 13.Qb3 Nb6 14.Rc1 Rf8 15.N2c3 Kd8 16.Nd6 (16.d4 Qf5 17.0–0 Be7 18.ba6 Ra6=) 16...Qd6 (16...Nd5 17.Nd5 (17.Qd5?! Qd6 18.b6 Qd5 19.Nd5 c6+=) 17...cd6 18.ba6+–) 17.Bg2 Qe5 18.0–0 Qe7 19.d4 Rf6 (19...Be6!? 20.d5 Bf5=) 20.ba6+= Ra6 21.Qg8 Qf8 22.Qh7 Rh6 23.Qe4 Qd6 24.Qe5 Qe5 25.de5 c6 26.Rfd1 Ke7 27.Rd4 Rh5 28.Ne4 Re5 29.Nd6 Re6 (29...Ra2 30.Rb1 Re6 31.Nc8 Nc8 32.Rb7 Kf6 33.Rf4 Ke5 34.Rg7 Ra1 35.Bf1+–) 30.Nc8+/– Nc8 31.Rg4 Nd6 32.a4 g5 33.Rc5 Nf7 34.Rb4 Ra7 35.h4 Ne5 36.Rc2 (36.hg5?! Nd3 37.Rcc4 Nb4 38.Rb4 Re5=) 36...Nd3 37.Rb3 Ne1 38.Rcb2 Kf6 39.hg5 Kg5 40.Bh3 Nf3 41.Kg2 Nh4 42.Kg3 Nf5 43.Kh2 Re4 44.Rb7 Rb7 45.Rb7 Ra4 46.Rf7 Nd6 47.f4 Kg6 48.Re7 Nc4 49.e4 Nd2 50.Bf5 Kf6 51.Re6 Kf7 52.Kh3 Ra3 53.Kg4 Re3 54.e5 Nc4 55.Kg5 Rg3 56.Kh4 Rf3 (56...Re3 57.Rf6 Kg7 58.Rg6 Kf8 59.e6+–) 57.Rf6 Ke7 58.Bg4 Rf1 59.Kg5 White intends f5 59...Ne3 60.Re6 Kf8 61.Rc6 Rg1 62.f5 (62.Kf6 Ng4 63.Ke6 Ra1+/–) 62...Rg4 63.Kf6 Rc4 64.Rc4 (64.Rd6 Ng4 65.Ke6+=) 64...Nc4= ½–½. gioco1b4 (2490) – MateinEight (2365), ChessWorld.net, 2013.

7.Qb3?! 0–0

8.Ne2 c6 9.d4 ed3 10.Bd3 (10.Qd3? cb5 11.Bb5 a6–+) 10...cb5 11.Qb5 a6 12.Qb3 b5 13.0–0 Bb7 14.Nd2 Nbd7 15.Bf5 Qe7 16.Rfd1 Nc5 17.Qc2 g6 18.Bh3 Bc8 19.Bc8 Rac8 20.Nf3 Nce4 21.Bf6 Qf6?? (better is 21...Rc2 22.Be7 Be7=) 22.Qe4+– 1–0. Trkn – guest2478, ICC, 2004.

8.Ne2 Nbd7

9.0–0 Nb6 10.Bf6 Qf6 11.Nbc3 Qe7 12.Ng3+= Bg3 13.fg3 h6 14.Rf4 Nc4 15.Qc4 Rd8 16.Ne4 Be6 17.Qe2 f5 18.Nf2 a6 19.ba6 Ra6 20.a4 Qd7 21.Rd4 Bd5 22.Nd3 Rd6 23.Nf4 Bf7 24.Rd6 Qd6 25.d4 c5 26.Qb2 cd4 27.Rd1 Qe7 28.ed4 g5 29.Nd3+= Qe3 30.Nf2 Qb3 31.Qa1 Qc4 32.a5 Rd5 33.Qb2 Rb5 34.Qd2 Qa4 35.Qc3 Qc4 36.Qc4 Bc4 37.Ra1 Kg7 38.Nd1 Bd3 39.Ra3 Be4 40.Nc3 Rb4 41.Ne4 fe4. Psion – Psion, 4 Min/Zug, 1989.

9.0–0 Qe7 10.Ng3 Nc5 11.Qc2=+ Re8 12.Bf6 Qf6 13.Nc3 Qg6 14.Bd5 Bf5 15.f4 a6 16.Rab1 Rad8 17.ba6= c6 18.Nf5 Qf5 19.Be4 Ne4 20.ab7 Bb8 21.Ne4 Qe4 22.Rfc1 Qd5 23.Rb2 Bf4 24.g3?? Bb8 25.Qc6=+ Qc6 26.Rc6+/– f5 27.Kg2 g6 28.a4 Kg7 29.a5+– Rd3 30.Rc8 Kf7 31.Rbc2 Red8 32.Kf3 Ke7 33.Rd8 Rd8 34.a6 h5 35.d4 g5 36.Rc8 g4 37.Kg2 h4 38.Rb8!! h3 39.Kf1 Rb8 40.a7 (40.a7 Rb7 41.a8Q Rb1 42.Ke2 Rb2 43.Kd3 Rh2 44.e4+–) 1–0. Psion – Psion, 4 Min/Zug, 1989.

9.Nd4 Ne5 10.Be2 c5 11.bc6 bc6 12.Nc3 Rb8 13.Qc2 Bg4 14.Rb1 (14.f3 c5 15.Nc6 Nc6 16.fg4 Nb4–+) 14...Be2 15.Nce2? (better is 15.Ke2 Qc8 16.f4 Qa6 17.Kf2 Nd3 18.Kg1–+) 15...Nd3–+ 16.Kf1 Ng4 (16...Rb2?! 17.Rb2 Ng4 A) 18.Nc6 Qf6 19.Nf4 Bf4 (19...Qb2?! 20.Qb2 Nb2 21.Nd5–+) 20.ef4 Nb2 (20...Qb2?! 21.Qb2 Nb2 22.h3–+) 21.Qe4 Nd3 22.Ne7 Kh8 23.Qd3 Qa1 24.Ke2 Qh1–+; B) 18.Nc3–+; 16...Nb2?! 17.Rb2 Rb2 18.Qb2–/+) 17.Qc3 (17.Ng3 Ngf2 18.Nc6–+) 17...Qf6 18.f4 (18.f3 Nh2 19.Kg1 c5–+ (19...Rb2 20.Rb2 Qh4 21.g3 Bg3 22.Kg2 Ne1 23.Re1 Be1 24.Nf5 Qf2 25.Kh3 Qf1 26.Kh2 Qe2 27.Kh1 Qf3 28.Kg1 Qf2 29.Kh1 Qf1 30.Kh2 Qf5 31.d3 Bc3 32.Rc2 Qh5 33.Kg2 Qf3 34.Kh2 Be5 35.Kg1 Qd1 36.Kg2 Qc2 37.Kh3 Qh2 38.Kg4 f5 39.Kg5 Qh6)) 18...c5 (18...Qh4 19.g3 Qh3 20.Kg1–+) 19.Nb3 Be5 20.Qc2 Bb2 21.Ng3 Qa6 22.Qd1 (22.Kg1 c4 23.Nc5 Nc5 24.h3 Ne3 25.de3–+) 22...Ngf2 23.Qe2 (23.Nc5 Qa2 24.Qc2 Rfc8 25.Nge4 Ne4 26.Qd3 Nc5–+) 23...Nh1 (better is 23...Qa2 24.Re1 Qb3 25.Qf2 Nf2 26.Kf2–+) 24.Rb2 (24.Ne4 c4 25.Nbc5 Qa2 26.Rd1–+) 24...Ng3 25.hg3 Qh6 26.Kg1 Nb2 (26...Nb2 27.d4 ed3 28.Qb2 c4–+) 0–1. Elsayed,Tarek M – Amin,Bassem (2640), 16th Mahalla Open, 2015.

9.d4 ed3?!

10.Qd3 Nb6 11.Nd4 =+.

10.Qd3 Nc5!?

10.Qd3 Ne5 11.Be5 Be5 12.Nbc3 Qd3 (12...Qe7 13.Rd1+=) 13.Bd3 Rd8 Black launches an attack 14.Bc4 (14.Rd1 Be6=) 14...Bf5 15.0–0 (15.Rc1 Bd3 16.Bd3 Rd3+=) 15...Ne4 16.Rac1? (better is 16.Ne4 Be4 17.Rad1+=) 16...Nd2–+ 17.Bf7? (better is 17.Bd5 Nf1 18.Rf1–+) 17...Kf7 18.f4 (18.Rfe1–+) 18...Nf1 19.Kf1 Bc3 20.Rc3 Rd7 21.Nd4 Be4 22.g3 (22.f5 Kf6–+) 22...a6 23.a4 (23.ba6 Ra6 24.a3 c5 25.Rc5 Ra3–+) 23...ab5 24.ab5 Ra1 25.Kf2 Ra2 26.Kg1 0–1. Hasler,Ulrich – Roggensack Hanspach,Peter, corr ICCF TT–4–90, 1990.

10.Qd3 Ne5 11.Be5 Be5 12.Qd8 Rd8 13.Nbc3 b6 (13...a6 14.ba6 ba6 15.f4 Bc3 16.Nc3–/+) 14.Rc1 (14.0–0 a6 15.Rad1 Re8=+) 14...Bb7 15.0–0 Rd7 (15...a6 16.ba6 Ba6 17.Ba6 Ra6 18.Rfd1=+) 16.f3 (16.Rfd1 Rad8=) 16...Rad8 (16...a6 17.ba6 Ba6 18.Ba6 Ra6 19.Rfd1=+) 17.Rfd1 Kf8 (17...c5 18.bc6 Bc6 19.Rd7 Bd7 20.f4 Bc3 21.Rc3=+) 18.Rd7 Rd7 19.Rc2 (19.Rd1 Rd1 20.Nd1 c6=) 19...Ke7 (19...c6 20.bc6 Bc6 21.a4=+) 20.h3 (20.Ng3 g6=) 20...c5=+ 21.bc6 Bc6 22.Bb3 (22.f4 Bc3 23.Nc3 h5=+) 22...Nd5 (22...b5 23.f4 Bc3 24.Rc3=+) 23.Nd5= Bd5 24.Bd5 (24.f4 Bb3 25.ab3 Bd6=) 24...Rd5 25.Kf2 Kd7 ½–½. Grund,Karl – Roggensack Hanspach,Peter, corr SOK–87–14, 1987.

5.c4 Bc5

6.d4 Bb4 7.Bc3 Bc3 (7...Bd6 8.Nd2+=) 8.Nc3= c6 (8...dc4 9.Bc4 0–0 10.Qc2=) 9.bc6 Nc6 (9...bc6 10.Rb1=) 10.cd5+= Nd5 11.Ne4 Qa5 (11...0–0 12.Rc1+=) 12.Qd2 Qd2 (12...Ncb4!? 13.Rb1 0–0+/–) 13.Kd2+/– Ke7 14.Nf3 Bf5 15.Bd3 Bg4 (15...Ndb4 16.Rhb1 b6 17.a3 Nd3 18.Kd3+/–) 16.Rab1+– b6 17.Bc4 Ndb4 (17...Rhd8!?+/–) 18.a3+– Bf3 (18...Bf5 19.Nfg5 f6 20.ab4 Rhd8+–) 19.gf3 Na5 (19...f5 20.Nc3 a5+–) 20.Rb4 (20.ab4?! Nc4 21.Kd3 Rhc8+/–) 20...Rac8 (20...Nc4 21.Rc4 Rhc8 22.Rhc1 Rc4 23.Rc4+–) 21.Ba6 Rc6 22.Bb5 Rg6 (22...Rc7 23.Nc3 Rd8 24.e4+–) 23.Rc1 Rd8 (23...Kd8 24.Bd3 Rc6 25.Rc6 Nc6 26.Rc4+–) 24.Rc7 Kf8 25.Ra7 Rg2 (25...Nc6 26.Bc6 Rc6 27.Rb5+–) 26.Bf1 Rg1 (26...Rg6 27.Rb5+–) 27.Rb6 Nc4 (27...Rf1 28.Ra5 Rh1+–) 28.Bc4 (28.Bc4 Kg8 29.Bf7 Kh8 30.Rab7+–) 1–0. marre – oppo01, internet, 2010.

6.d4 ed3 7.Bd3 (7.Qd3 0–0=) 7...0–0 (7...dc4!? 8.Bc4 Qd1 9.Kd1 Ne4+=) 8.cd5= Nd5 9.Bh7! Kh7 Decoy theme: h7 10.Qc2 Theme: Double Attack 10...g6 11.Qc5 c6 12.Nc3 Qa5?? (better is 12...Be6+/–) 13.Qf8+– Nc3 14.Qf7 (14.Qc8?! Nb1 15.Ke2 Qb5 16.Kf3 Qb2+=) 14...Kh6 15.Qf8 Kh7 16.Qe7 Kh6 (16...Kg8 17.Qe5 Na4 18.Kf1 Qb5 19.Qb5 cb5+–) 17.Qh4 Kg7 18.Qd4 Kh7 (18...Kf7 19.Bc3 Qa3+–) 19.Bc3 (19.Bc3 Qc3 20.Qc3+–) 1–0. pierre – esiv2003, Yahoo, 2005.

6.cd5 Qd5 7.Nc3 Qe6 8.d4 ed3 (8...Bd6 9.d5 Qe7 10.Nge2+=) 9.Bd3 0–0 (9...a6 10.Nf3=) 10.Nf3 c6 (10...Nbd7 11.Qc2+=) 11.0–0 a6 (11...h6 12.Qc2+=) 12.Na4+/– Bd6 13.Nb6 Ng4?? (better is 13...Ra7 14.Ng5 Qe7 15.Bf6 Qf6 16.Bh7 Kh8 17.Nc8 Qg5 18.Na7 Qh6+–) 14.Na8 (14.Nc8?! Rc8 15.Bh7 Kf8+–) 14...Bh2 (14...cb5 15.h3 Nh6+–) 15.Nh2 Nh2 (15...ab5 16.Nc7 Qd7 17.Ng4 Qg4 18.Ba3+–) 16.Qh5 g6 (16...Nf3 17.Qf3 Qg4 18.Qg4 Bg4 19.f3+–) 17.Qh6 (17.Qh2 Qe7+–) 17...f6 (17...Nf3 18.gf3 f6 19.Rfd1+–) 18.Bg6 (better is 18.Qh2 Qf7 19.Ba3 Re8+–) 18...hg6 19.Qg6 Kh8 20.Qh6 Kg8 21.Qh2 Rf7 (21...Nd7+–) 22.Qb8 Rh7 (22...ab5 23.Rfd1 Rf8 24.Ba3+–) 23.Nb6 1–0. GuestDRTL – GuestRCJR, freechess.org, 2017.

6.cd5 Qd5 7.Nc3 Qe6 8.g3 Qe7 (8...0–0 9.Nge2=) 9.Bg2= h5 (9...0–0 10.Nge2=) 10.h4 (10.Qc2 Bf5 11.Nh3 0–0+=) 10...0–0 11.Nge2 Bf5 12.Nf4 g6?? (12...Nbd7 13.Nh5 Nh5 14.Qh5+=) 13.0–0 (better is 13.Ncd5 Nd5 14.Nd5+–) 13...Rd8+= 14.Qc2 Pawn e4, live or die! 14...c6 (14...a6 15.Rfc1 Bb4 16.Qb3+=) 15.a4 (15.Nce2 Nbd7 16.bc6 bc6+=) 15...Nbd7 16.Nce2 (16.bc6 bc6 17.Nce2 Rab8+=) 16...Ne5 (16...Rac8 17.Qb3=) 17.Qc3 (17.bc6!? bc6 18.Nd4+=) 17...Bd6 18.Nd4 Bd7 19.bc6 bc6 20.f3 (20.Rfb1 Rab8+=) 20...ef3 (20...Nd5!? 21.Qc2 ef3 22.Bf3 Nf3 23.Nf3 Bf5 24.Nd5 Bc2 25.Ne7 Be7=) 21.Nf3+= Ne4? (better is 21...Nfg4+=) 22.Qd4+– Ng3 23.Ne5 Be5 24.Qe5 Qe5 25.Be5 Nf1 26.Kf1 Be8 (26...Re8 27.Bd4+–) 27.d4 Rac8 28.Bf6 (28.Nd3!? Bd7+–) 28...Rd6 29.Be7 Rd7 30.Bh3 (30.Ba3!? Rb7+–) 30...Re7+/– 31.Bc8 (31.Bc8 Re3 32.Re1 Rf3 33.Kg2 Rf4 34.Re8 Kg7 35.Re7+/–) 1–0. Biran,Anastasija – Iagutian,Maria, Batumi GEO, 2014.

6.cd5 Qd5 7.Bf6 gf6 8.Nc3 Qe6 9.Qc2 Nd7 (9...f5!?+/-) 10.Ne4+– Qe5 11.d4 (11.d4 Bb4 12.Nd2+–) 1–0. Wall,Bill – YDJZ, FICS, 2011.

5.c4 c6

6.a4 a5 7.d4=+ Bb4 8.Bc3 =+.

6.a4 a5 7.d4 ed3 8.Bd3 Bb4 9.Nd2 dc4=+ 10.Bc4 cb5 11.Bb5= Bd7 12.Ngf3 Nc6 13.0–0 0–0 14.Nc4 Ne4 15.Bc6 Bc6= 16.Qd4 Qd4 17.ed4 Bc3 18.Bc3 Nc3=+ 19.Nfe5 Ba4 20.Nb6 Ne2 21.Kh1= Rae8?? 22.Ra4+– f6 23.Nf3 Re6 24.Nd7 Rc8 25.Nc5 Rec6 26.Re1 b5? 27.Ra5 b4 28.Re2 b3 29.Rb5 Ra8 30.Rb3 Ra1 31.Re1 Re1 32.Ne1 Kf7 33.Ned3 Rd6 34.Rb7 Kg6 35.Rd7 Rb6 36.g3 Rb1 37.Kg2 Rd1 38.d5 h5 39.Re7 Rd2 40.d6 f5 41.d7 Kf6 42.d8Q (42.d8Q Rf2 43.Kf2 Kg6 44.Qe8 Kg5 45.Rg7 Kf6 46.Qe5) 1–0. gtate (1920) – ofi (1805), net–chess.com, 2004.

6.a4 a5 7.d4 Be7 8.Qb3 0–0 9.h3 (9.Ba3 Be6+= 10.Nh3 cb5 11.cb5 Ba3 12.Ra3 Bh3 13.gh3 Nbd7 14.Ra2 Nb6; 9.Nc3 Bb4 (9...Be6 10.Nh3 Nbd7 11.Nf4 dc4 12.Bc4 Bc4 13.Qc4 Nb6 14.Qb3 Nbd5; 9...Nbd7 10.c5 Nh5 11.Nge2 Ndf6 12.h3 g6 13.g4 Ng7 14.Nf4 Ne6) 10.Nh3 Bh3 11.gh3 Qd7 12.Rg1 dc4 13.Qc4 Nd5 14.Qb3 Qe6) 9...Re8 (9...Be6 10.Nd2 Bb4 11.c5 b6 12.cb6 Qb6 13.Ne2 cb5 14.ab5 Qb5; 9...Bb4 10.Nc3 Be6 11.c5 Nbd7 12.Qc2 Rc8 13.Nge2 b6 14.bc6 Rc6; 9...Qc7 10.Nc3 dc4 11.Bc4 Nbd7 12.Nge2 Nb6 13.Rd1 Qd6 14.bc6 Qb4; 9...Nbd7 10.c5 Re8 11.Nc3 Nf8 12.Nge2 Ng6 13.Rb1 h5 14.g3 Bf5) 10.Ne2 (10.Ba3 cb5 (10...Be6 11.Be7 Qe7 12.c5 Nbd7 13.Ne2 Nh5 14.Nec3 Qg5) 11.Qb5 (11.Be7 Qe7 12.cb5 Be6 13.Ne2 Nbd7 14.Nf4 Rec8) 11...Nc6 12.Be7 (12.c5 Bd7 13.Qb7 Rb8 14.Qa6 Nb4) 12...Re7–/+ 13.Qb3 Be6 14.Nc3 Nb4; 10.cd5 Nd5 11.Nc3 Nd7 12.Nd5 cd5 13.Ne2 Nb6 14.Nf4 g5) 10...Nbd7 (10...dc4 11.Qc4 Bb4 (11...Nd5 12.Nec3 Bb4 13.Qb3 Be6 14.Bc4 Qg5) 12.Nd2–/+ cb5 13.Qb5 Bd7 14.Qg5 h6) 11.c5 (11.Nec3 Nf8= (11...Nb6 12.Nd2 Be6 13.c5 Bc5 14.bc6 Bb4) 12.Nd2 Bf5 13.g4 Be6 14.g5 Nh5) 11...Nf8 (11...Bc5!? 12.dc5 (12.Nd2 Bd6 13.Nc3 Nb6 14.Be2 Be6) 12...Nc5+= 13.Qa3 Nd3 14.Kd2 c5) 12.b6 (12.Nec3 Ng6 13.Be2 Bd7 14.0–0 Qc7) 12...Nh5 (12...Be6 13.Nf4= (13.Nec3 N8d7 14.Qc2 Nb8) 13...Bf5 14.Nc3 Qb8; 12...Ng6 13.Nbc3 Nh4 14.Nf4 Bd7) 13.Nd2 (13.Nec3 Ne6 14.Qd1 g6) 13...f5 (13...Be6 14.Qc3+= (14.Nc3 Bh4) 14...Ng6; 13...Ne6 14.Nc3 Bh4) 14.g3 (14.g4 Nf6 15.Ng3 fg4 16.Nge4 Ne4 17.Ne4 Kh8=; 14.Nc3 f4) 14...Ne6 15.Qc3 Nf6 16.Nb3 Nd7 17.Ba3 g5 (17...Ng5 18.Ng1=) 18.Kd2 Nf6 19.Kc2 Bf8 20.h4 g4 21.Na5 Bg7 22.Bb4 Nd7 23.Nb3 Nb8 24.a5 Na6 25.Qe1 Qe7 26.Rc1 h5 27.Ba3 Qd8 28.Kb1 Kh8 29.Rc2 Kh7 30.Qd2 Kg8 31.Nec1 Kf7 32.Na2 Bh8 (32...Kg8 33.Ba6 Ra6 34.Nb4+=) 33.Nb4 Ng7? (better is 33...Nb4 34.Bb4 Kg8+=) 34.Ba6+– ba6 1–0. Frosinos,Ioannis – Kanellopoulos,Giorgios (2050), 3rd Open Patras GRE, 2001.

6.a4 a6 7.Na3 Bc5 8.Nh3 Bh3 –/+.

6.a4 a6 7.Nc3 Bb4 8.bc6 bc6 9.Rb1 Bc3 10.Bc3 0–0 11.Ne2 Bg4 12.Qc2 Nbd7 13.cd5 cd5 14.Nd4 Rb8 (better is 14...Ne5!?=) 15.Bb4+/– Re8 16.Nc6 (16.Ba6?! Rb4 17.Rb4 Qa5=) 16...Rc8 (16...Qc8!? 17.Ne7 Re7 18.Qc8 Rc8 19.Be7 Rc6+–) 17.Ba6+– Rc7 18.Bb5 (18.Bd6 Ne5 19.Bc7 Qc7+–) 18...Qc8 (better is 18...d4+–) 19.Bc5?? (better is 19.Bd6 Ne5 20.Bc7 (20.Be5?! Re5 21.Rc1 Re6+=) 20...Qc7 21.Nd4 Qc2 22.Nc2+–) 19...Re6 (better is 19...Rc6!? 20.Bc6 Qc6–+) 20.Bd6=+ Rd6?? (better is 20...Rc6 21.Qc6 Qc6 22.Bc6 Rd6=+) 21.Ne7+– Kh8 22.Nc8 Rc2 23.Nd6 h6 24.Nf7 Kg8 25.Nd8 Rc8 26.Nc6 Kf8 27.a5 Nc5 28.0–0 Ra8 29.f3 Bd7 30.Rfc1 Bc6 31.Rc5 Bb5 32.Rbb5 Nd7 33.Rc7 Nf6 34.Rbb7 1–0. Taulien,Hans_Juergen – Debbeler,Adrian, remoteschach.de, 2001.

6.a4 a6 7.Nc3 Be7 8.Qb3 Be6 9.Nge2?? 0–0 10.Nf4 Qd7 11.Be2? ab5 12.ab5 Ra1–/+ 13.Ba1 Rd8 14.d4? ed3!–+ 15.Bd3? dc4 16.Bc4 Bc4 17.Qc4 Qd2 (17...Qd2 18.Kf1 Qc1 19.Ke2 Qh1–+) 0–1. gtate (1920) – greenmonarch (2045), net–chess.com, 2005.

6.a4 cb5 7.ab5 b6 8.cd5 Nd5 9.Ne2 Nf6 10.Nf4 Bd6 11.Bc4 Bf4 12.ef4 0–0 13.0–0 Nbd7 14.Nc3 Nc5 15.Ba3 Qc7 16.Bc5 Qc5 17.Qb3 Bb7 18.Rfe1 Qd4 19.Ra2 Nh5 20.g3 Nf6 21.Ne2 Qc5 22.Nc3 Ng4 23.Re2 h5 24.Na4 Qd4 25.Qc3 Rfd8 26.h3 Nf6 27.Qd4 Rd4 28.Rc2 a6 29.ba6 Ba6 30.Ba6 Ra6 31.Nc3 Rc4 32.Ra2 Ra2 33.Na2 Rc2 34.Nc3 Kf8 35.Ne4 Ne4 36.Re4 Rd2 37.Rb4 Rd6 38.Kg2 g6 39.f3 Ke7 40.g4 Kf6 41.Kg3 Kg7 42.f5 gf5 43.gf5 f6 44.Kh4 Kh6 45.f4 Rc6 46.Rd4 b5 47.Rd5 b4 48.Rb5 Rc4 49.Kg3 Rc3 50.Kh4 b3 51.Rb6 Kg7 52.Kh5 Rh3 53.Kg4 Rc3 54.Rb7 Kf8 55.Kh5 Rg3 56.Kh6 1–0. bauska18 – karlos294, internet, 2014.

6.a4 dc4 7.Bc4 Bd6 8.Qc2 (8.d3 0–0+=) 8...0–0 9.Ne2 cb5 10.Bb5 (10.ab5 Nbd7+=) 10...Be6 (10...a6 11.Bc4–/+) 11.Nd4= Bg4 (11...Qe7 12.Ne6 Qe6 13.Bf6 Qf6 14.Nc3=) 12.0–0 (12.Nc3 a6 13.Bc4 Re8=) 12...a6 13.Bc4 Qc7 (13...Nbd7 14.Nc3 Qc7 15.Ne4 Bh2 16.Kh1 Ne4 17.Qe4=) 14.h3 Bd7 (14...Bh5 15.d3=) 15.Bb3 (15.Rc1 Nc6+=) 15...Rc8 16.Nc3 Be5 17.Nde2 (17.d3 Nc6 18.Nc6 Bc6=) 17...b6 (17...b5 18.Qb1+=) 18.Qb1 (18.d4 ed3 19.Qd3 Nc6=) 18...Qd6 (18...Rd8 19.Bc2 Bc6 20.Nd4 Bd4 21.ed4=) 19.Ng3 e4 draws heavy fire (19.Rd1 Qb4 20.Ba3 Qa5+–) 19...Bg3 20.fg3 White gets strong initiative. 20...Qd2 (20...Bc6!?+=) 21.Nd1= Nd5?? (21...Bc6 22.Bf6 gf6 23.Bc2=) 22.Bd4?? (better is 22.Qe4!? Rc5 23.Bd4+–) 22...Be6 (better is 22...Bc6=) 23.Qe4+/– Qa5 24.Bc2 g6?? (better is 24...Rc2 25.Qc2 Nd7+/–) 25.Qe5+– Nf6 (25...Kf8 26.Qe6 Rc7+–) 26.Qf6 Kf8 27.Bb2 (better is 27.Qe6! Rc7 28.Qd6 Ke8 29.Bb3+–) 27...Ke8 28.Be4 Ra7 29.Nf2 (better is 29.Qh8 Kd7 30.Qh7 Nc6+–) 29...Nd7 (29...Qb4 30.Qh8 Qf8 31.Qh7+–) 30.Qh8 Nf8 31.Rfd1 (31.Ba3 Re7 32.Ng4 Bg4 33.Be7 Ke7 34.Qf6 Kd7 35.hg4 Qd5 36.Rad1 b5 37.Rd5 Kc7 38.Rc5 Kd7 39.Rd1 Ke8 40.Rc8) 31...f5 32.Bf3 (better is 32.Rd6 Re7+–) 32...Bb3 (32...Re7 33.Rd6+–) 33.Rd6 (33.Rac1 Rc5 34.Rc5 Qc5+–) 33...Rac7 34.Nd3 (better is 34.Rf6 Rf7 35.Rc6 Rc6 36.Bc6 Kd8+–) 34...Qd2 35.Bg7 Qe3 36.Kh2 Rg7 37.Qg7 f4 (37...f4 38.Re1 Qe1 39.Ne1 fg3 40.Kg3 h5+–; 37...Qe7 38.Re1 Be6+–). Sadanowicz,Tadeusz – Ptak, Poland, 1984.

6.a4 c6 7.cd5 cd5 8.Nc3 d4 9.Nce2 d3 10.Nc3 Bb4 11.g3 Bc3 12.Bc3 0–0 13.Bg2 Bg4 14.Qb3 Nbd7 15.Nh3 Bf3 16.Bf3 ef3 17.Nf4 Nc5 18.Qb2 Nce4 19.Bd4 Rc8 20.Rc1 Qa5 21.Bf6 Nf6 22.0–0 Ne4 23.Qa2 Nd2 24.Rfd1 Ne4 25.Nd3 Rc1 26.Nc1 Nc3 27.Qa1 Nd1 28.Nd3 Qd2 29.Qa3 Rd8 30.h4 Qd3 31.Qd3 Rd3 32.a5 Rd2 33.b6 ab6 34.ab6 Rf2 35.g4 Rg2 36.Kf1 Ne3 37.Ke1 f2 38.Ke2 f1Q 39.Ke3 Re2 40.Kd4 Qd1 41.Kc5 Rc2 42.Kb4 Qb1 43.Ka3 Ra2 0–1. ventil – tonildo, internet, 2014.

6.a4 Bf5 7.Ne2 Bd6 8.Nd4 Bg6 9.Be2 (9.cd5 Nd5 10.bc6 bc6=) 9...0–0 (9...dc4 10.Bc4 c5 11.Nb3+=) 10.0–0 Nbd7 (10...c5 11.Nb3+=) 11.cd5 (11.f4 ef3 12.Nf3 Re8=) 11...cd5 (11...c5!? 12.Nc2 Qc7+=) 12.Nc3 Rc8 13.d3 (13.f4 ef3 14.Bf3 Ne5=) 13...Bb8 (13...Nc5 14.de4 de4 15.Rc1+=) 14.de4= de4 15.Bg4? (15.Rc1!?=) 15...Qc7 (15...Rc3!? 16.Bc3 Qc7 17.Re1–+) 16.g3–/+ Ng4 17.Qg4 f5 (better is 17...Ne5 18.Qe2 Nd3–/+) 18.Qf4? (18.Qg5 Qd8 19.Qd8 Rfd8+= (worse is 19...Rcd8 20.Ne6+/–)) 18...Qf4?? (better is 18...Qc3 19.Bc3 Bf4–+) 19.gf4+= Nc5 20.Nd5 (better is 20.Ba3+=) 20...Nd3 (better is 20...Kf7!?+=) 21.Ba3 (21.Ne7 Kf7 22.Ba3 Rfd8 23.Nc8 Rc8+=) 21...Rfd8 (21...Rfe8 22.Ne7 Re7 23.Be7=) 22.Ne7 Kh8 (22...Kf7 23.Nc8 Rc8 24.b6 ab6 25.Rfb1+/–) 23.Nc8 (23.Ne6 Re8 24.Nc8 Rc8+/–) 23...Rc8+= 24.Rab1 (24.Rfd1 Kg8+/–) 24...h6 (24...Rc4 25.a5 Kg8 26.a6+=) 25.Bb4 (25.a5 Kh7+/–) 25...Bh7 (25...Rc4 26.Be7 Kg8 27.a5=) 26.Ba3 g6 (better is 26...Bg6!?=) 27.Bb2+/– Kg8 (better is 27...Rc4+/–) 28.Ne6 (better is 28.f3!?+/–) 28...Kf7= 29.Nd4 Bg8 (29...Kg8 30.f3+/–) 30.Ba3 (30.f3!?+/–) 30...Ke8 (30...Rc4 31.a5 Ra4 32.a6 Ra3 33.ab7=) 31.b6 (31.a5 Ba2 32.Ra1 Bd5=) 31...a6= 32.f3 Bc4 (32...Rc4!?=) 33.Rfd1 (33.fe4 fe4 34.a5 Kf7+/–) 33...ef3 (33...Bd5 34.fe4 fe4 35.a5+=) 34.Nf3+/– Kf7 (34...Rd8 35.Rd2+/–) 35.Nd2 (35.Ne1 Ne1 36.Rd7 Ke6 37.Re7 Kd5 38.Re1 Kc6+–) 35...Be6 (35...Ba2+=) 36.Nf3 (36.Nf1 Ba2 37.Ra1 Bc4+/–) 36...Rc3 (36...Bc4 37.Ne1 Ne1 38.Rd7 Ke6 39.Re7 Kd5 40.Re1+–) 37.Bb2 (better is 37.Bb4!? Nb4 38.Rb4 Re3 39.Kf2+/–) 37...Rc2?? (better is 37...Nb2 38.Rb2 Re3 39.Ne5 Be5 40.fe5 Re5+=) 38.Rd3+– 1–0. GuestRZGB – GuestZSGB, freechess.org, 2016.

6.a4 Bg4 7.Qc2 Bd6 8.d3 Nbd7 9.Ne2? ed3–+ 10.Qd3 Ne5 11.Be5 Be5 12.Nbc3 Qa5 13.Rc1 Qa4?? 14.Na4+– 1–0. Demi (1785) – voja (2115), Live Game Caissa's Web, 2006.

6.a4 Bg4 7.f3 Be6 8.cd5 cd5 9.Ne2+=.

6.a4 Bg4 7.f3 (7.Bf6 Qf6 8.Qg4 Qa1 9.Qc8 Ke7 10.Qb7 Kf6 11.bc6=) 7...ef3 8.Nf3 Bc5 (8...a6!?+=) 9.cd5= cd5 10.Be2 0–0 11.0–0 Re8 12.a5 Nbd7 13.Nd4 Bd4 14.Bd4 Be2 15.Qe2 Re4 (15...a6!?+=) 16.Nc3+/– Re6 17.Rf5 Qe7 18.Nd5 Nd5 19.Rd5 Nf6 20.Rf5 Re8 (20...Rd8 21.Qf3 Ne4+–) 21.Raf1 a6 22.Bf6 Rf6 23.Rf6 gf6 24.ba6 ba6 25.Qa6 (25.Qa6 Rd8 26.Rd1+–) 1–0. Trkn – guest399, ICC, 2004.

6.a4 Bg4 7.f3 ef3 8.Nf3 Ne4 9.d3 Ng5 10.Be2 dc4 11.Ng5 Be2 12.Qe2 Qg5 13.dc4 Bb4 14.Nd2 cb5 15.cb5 Nd7 16.0–0 0–0 17.Nf3 Qe7 18.Rf2 Bc5 19.Nd4 Nf6 20.Raf1 Nd5 21.Nf5 Qe8 22.Ng7 Qe3 23.Qe3 Be3 24.Nf5 Bf2 25.Rf2 Rab8 26.Rf3 h6 27.Rg3 Kh7 28.Rg7 Kh8 29.Rf7 Kg8 30.Nh6 1–0. kannisogoet – kingsbane, internet, 2014.

6.Qb3 Bd6 7.Nc3 0–0 (7...Nbd7 8.cd5 Nc5 9.Qc4 cd5 10.Nd5 Nd5 11.Qd5=) 8.cd5= cd5 (8...a6 9.bc6 bc6 10.Rd1=) 9.Nd5+= Nd5 (9...Nbd7 10.Rc1+=) 10.Qd5 Be6? (better is 10...Qe7+=) 11.Qb7?? (11.Qe4 Qd7+–) 11...Nd7?? (better is 11...Bb4 12.Bc3 Bc3 13.dc3 Bd5–+) 12.Qe4+– Nc5 13.Qd4 f6 14.Bc4 Bc4 15.Qc4 Kh8 16.d4 (16.Nf3 Rc8+–) 16...Ne4 17.Ne2?? (better is 17.Nf3+–) 17...Qa5= 18.Bc3 (18.Nc3!? Bb4 19.0–0 Bc3 20.Rfb1+=) 18...Nc3–/+ 19.Nc3 Rac8 20.Qb3?? (better is 20.Qe6 Qc3 21.Ke2–/+) 20...Rc3–+ (20...Rc3 21.0–0 Rb3 22.ab3 Qb5–+; 20...Qc3?! 21.Qc3 Rc3 22.Ke2=) 0–1. GuestDWVK – GuestSNQY, freechess.org, 2017.

6.Qb3 Be7 7.bc6 bc6 8.cd5 cd5 9.Bb5 Bd7 10.Ne2 (10.Bf6 Bf6 (worse is 10...gf6 11.Nc3+/–) 11.Nc3 Bc3 12.dc3 Qa5+=) 10...0–0 (10...a6 11.Ba4 Ba4 12.Qa4 Qd7 13.Nbc3+=) 11.0–0 a6 12.Ba4 Nc6 13.Bc6 Bc6 14.Nd4 Rb8 (14...Qd7 15.Nc6 Qc6 16.Rc1+=) 15.Nc6+= Rb3 16.Bf6 Bf6 17.Nd8 Rd8 (17...Rb6 18.Nc3 Bc3 19.dc3 Rd8 20.Rfd1+=) 18.ab3 Ba1 19.Nc3 Bc3 20.dc3 Rb8 (20...Rc8 21.Rc1+=) 21.b4= h6 22.Ra1 Rb6 23.Ra5 Rd6 24.Kf1 Kf8 (24...f5 25.h4=) 25.Ke2 Ke7 26.Rc5 f5 27.Rc7 Kf6 28.Kd2 h5 29.h4 g6 30.Rc5 Ke6 31.Ke2 Kf6 32.Ra5 g5 33.hg5 Kg5 34.Rc5 h4 35.f4 ef3 36.Kf3 Re6 (36...Rd7!?=) 37.Rd5+/– 1–0. DEFFM – GuestVFSP, freechess.org, 2017.

6.Qc2 a6 7.a4 (7.cd5 Qd5 8.Bf6 gf6+/–) 7...ab5 8.ab5 Ra1 9.Ba1 Be7 10.Ne2 (10.Bf6 Bf6 11.d4 ed3 12.Bd3 Be6+=) 10...0–0 (10...dc4 11.Bf6 Bf6 12.Qe4 Qe7 13.Qc4=) 11.Nd4 Ng4 (11...c5 12.Nb3–/+) 12.f3 ef3 13.Nf3 Bf6 14.Bd4 Bd4 15.Nd4 Qh4 (15...c5 16.Nb3 Qh4 17.g3–/+) 16.g3= Qh6 17.Nf3 (17.cd5 cd5 18.Bg2 Be6=) 17...Re8 18.cd5 cd5 19.Qc5 Bf5 20.h3?? (better is 20.Nc3 Ne3 21.de3 Qe3 22.Qe3 Re3 23.Kd2 Rf3 24.Be2+=) 20...Bb1–+ 21.Bg2 Nf6 22.g4 (22.Qb6 Qg6 23.g4 Re7–+) 22...g5 (22...Bd3 23.g5 Qg6 24.gf6 Qg2 25.Nd4–+) 23.h4 Qf8 (23...gh4!? 24.g5 Qg6 25.Qd4–+) 24.Qf8 Rf8 25.hg5 (25.Ng5 Ne4–+ (25...Ng4?! 26.Bd5 Bd3 27.Rg1–/+)) 25...Ng4 26.Ke2 Be4 27.Bh3 (27.d3 Bf5 28.Nd4 Be6–+) 27...Ne5 28.Bg2 Nf3 29.Bf3 Bf3 (29...f6 30.Be4 de4 31.gf6 Rf6 32.Rh4–+) 30.Kf3 f6 31.Kg4 Kg7 (31...fg5 32.Rh5 h6 33.Rh6–+) 32.Rc1 (32.Rh5 Nd7–+) 32...Rf7 33.d4 Kg6 (33...fg5 34.Kg5 h6 35.Kh4–+) 34.gf6 (34.Rc8 Nd7 35.Rg8 Rg7 36.Rg7 Kg7–+) 34...Nd7 35.Kh4 (35.Rg1 Nf6 36.Kf4 Kh6–+) 35...Nf6 (35...Rf6?! 36.Rc7 Nb6 37.Rb7–+) 36.Rg1 Kh6 (36...Kf5 37.b6–+) 37.Rg5 Re7 38.Re5 Re5 39.de5 Ne4 40.Kg4 (40.b6 Kg6 41.e6 Kf6–+) 40...Kg6 41.Kf4 h5 42.b6 Nc5 43.e6 (43.e4 Ne4 44.Ke3 Kf5–+) 43...Ne6 (better is 43...Kf6!? 44.e4 Ne4 45.e7 Ke7 46.Ke5–+) 44.Ke5 Kf7 (44...h4 45.Kd5 h3 46.e4 Nf4 47.Ke5–+) 45.Kd5 h4 46.Kd6 (46.e4 Nf4 47.Kd6–+) 46...h3 47.Kd7 h2 48.Kc8 h1Q 49.Kb8 Nc5 50.Ka7 Qa1 51.Kb8 Qh8 52.Ka7 0–1. Dopper,Johan – Bandsma,A, 1991.

6.Qc2 Nbd7 7.Nc3= Bd6 (7...Nc5 8.bc6 bc6 9.cd5 cd5 10.d4 ed3 11.Bd3 Nd3 12.Qd3=) 8.bc6 bc6 9.cd5 cd5. Hoffmann,KD – Roggensack, corr SOK–91–73, 1991.

6.Qc2 Be6 7.cd5 cd5 8.Nc3+=.

6.Qc2 Be6 7.Ne2 dc4 8.Nf4 Bf5 9.Bc4 Bd6 10.Nc3 Bf4 11.ef4 0–0 12.Qb3 a6 13.bc6 Nc6 14.Nd5 Nh5 15.Qd1 b5 16.Qh5 Bg6 17.Qe2 bc4 18.Qc4 Rc8 19.0–0 Kh8 20.Rac1 Re8 21.Ne3+= Qd7 22.Qa4 f6 23.Rc2 Bh5 24.Re1 Ne5 25.Qd7 Nd7 26.Rc8 Rc8 27.a3 Bf7 28.Bd4 h5 29.g3 Rc6 30.f3!+/– ef3 31.Kf2 Rd6 32.Bc3 Nc5 33.Kf3 Be8 34.d4 Bc6 35.Ke2 Bb5= 36.Kd1 Ba4 37.Kd2 Nb3 38.Kd3 Bb5 39.Kc2 Nd4 40.Bd4 Rd4 41.Nf5 Rd7 42.Re3 Kg8 43.Kc3 Kf7 44.Nd4 Bf1 45.Re1 Rc7 46.Kb3 Bc4 47.Kb4 Bd3 48.Ne6 Rc4 49.Ka5 Bf5 50.Nd8 Kg6 51.Kb6 h4 52.Nc6 Kh5 53.Re7 g5 54.fg5 Kg5 (54...fg5? 55.Ne5 hg3 56.hg3+– (56.Nc4?! gh2 57.Re1 Be4=)) ½–½. OrangoTango – Christiane2168 (2410), internet, 2003.

6.Qc2 Be6 7.Ne2 (7.cd5 cd5 (worse is 7...Qd5 8.Bf6 gf6 9.Nc3+/–) 8.d3 Nbd7+=) 7...Be7 (7...dc4 8.Nd4 cb5 9.Ne6 fe6 10.a4+=) 8.Nbc3 (8.Nd4 0–0=) 8...0–0 (8...dc4 9.Nd4 Bd5 10.bc6 bc6 11.Qa4+=) 9.Nd4 Qd6 10.Be2 a6 (10...dc4 11.Ne6 Qe6 12.Qa4+=) 11.cd5 cd5 12.f3 ef3 (12...Rc8 13.Ne6 Qe6 14.Qb3=) 13.Bf3 ab5 14.Ncb5 Qd7 15.a4 (15.0–0 Nc6=) 15...Nc6 16.0–0 Rfc8 17.Qd1 Nd4 (17...Ne5 18.Ne6 Nf3 19.Qf3 fe6 20.Qg3=) 18.Nd4 Bd6 19.Nb5 Be7 20.d3 Ng4 (20...Ra6 21.Bd4=) 21.Qd2 (21.Bd4 Bf6 22.Bf6 Nf6=) 21...Ra6 22.h3 (22.Bd4 Nh6=) 22...Nh6 23.Qf2 Bg5 (23...Rca8 24.Bd1=) 24.e4 de4 ½–½. Bendig,Frank – Dahlen Lund,Jens, IECG, 2001.

6.Qc2 Be7 7.Nc3 0–0 8.d4 (8.cd5 cd5 9.Nge2 Nbd7+=) 8...a6–/+ 9.cd5 cd5 (9...ab5 10.dc6 Nc6 11.Bb5+=) 10.Qb3+= Be6 (10...ab5 11.Bb5 Nc6 12.Nge2+=) 11.Nge2 (better is 11.Rc1+=) 11...Ng4 (better is 11...ab5!? 12.Nb5 Nc6–/+) 12.h3 (12.Nf4 Bd6+=) 12...Nh6 (12...Nf6 13.Nf4=) 13.Nf4+= Now all is on d5 13...Nf5 (13...Bd6 14.Ba3+=) 14.Be2 (14.Ncd5 Bg5 15.Ne6 fe6+–) 14...Nh4 (14...Bd6!? 15.Ne6 fe6=) 15.0–0 (better is 15.Rc1+/–) 15...ab5 (better is 15...Bd6+/–) 16.Bb5?? (better is 16.Ncd5!? Bd5 17.Qd5+–) 16...Kh8 (better is 16...Bd6!? 17.Be2 Nc6=) 17.Ne6 (better is 17.Be2!? Bd6 18.Qb7+=) 17...fe6=. Kuznetsky,Boris – Klimov,Valery (1940), N–08–sen, 2008.

6.Qc2 Be7 7.Ne2 0–0 (7...dc4 8.Qc4 Be6 9.Qc2=+) 8.cd5 cd5 9.d4 (9.d3 Nbd7=+) 9...Bb4 (9...a6 10.Nec3=+) 10.Nec3 Be6 11.a3 (11.Be2 Qe7=+) 11...Ba5 (11...Bd6 12.f3=+) 12.Be2 (12.Nd2 Qd6=+) 12...Nbd7 (12...Ng4 13.h3 Nh6 14.0–0=+) 13.0–0 Rc8 14.Nd2 Bc3 (14...Bg4 15.f3 Bh5 16.Nb3=+) 15.Bc3= Nb6 (15...Bg4 16.f3 ef3 17.gf3= (17.Nf3?? Ne4–+)) 16.Rac1 Qd6 (16...Qd7 17.Nb3=) 17.Qa2+= Bg4 (17...Qd7 18.Bb4 Rfe8 19.Bc5=) 18.Nb3 (18.Bb4 Qb8 19.Bf8 Be2 20.Rc8 Nc8+=) 18...Be2 (18...Rfe8 19.Bb4 Qb8 20.Rc5=) 19.Bb4 Rc1 20.Rc1 (20.Bd6?? Rf1) 20...Qd8 (20...Qb8 21.Bf8 Bb5 22.Bb4=) 21.Bf8+= Bb5 22.Bb4 (22.Bc5 Nc8+=) 22...Nc4 23.a4 Ba6 (23...Bd7 24.Nd2 Be6 25.Qc2+=) 24.Nc5 Qb6 25.Rb1 Qc6 26.Be1 Nd7 27.Bb4 (27.Nd7 Qd7 28.Bb4 b6+=) 27...Nc5 (27...Nf6 28.Qb3 Nd7 29.Na6 Qa6 30.Be1+=) 28.dc5 (28.Bc5 b6 29.Bb4+=) 28...f5 (28...Ne5!?=) 29.Rd1 (29.Qa1 b6 30.Qd4 Bb7+/–) 29...Kf7 (29...b6 30.cb6 ab6 31.Qa1+/–) 30.Qa1 g6 (better is 30...Kg6!?+/–) 31.Qh8+– Qa4 32.Qh7 Kf6?? (32...Kf8 33.Qh8 Ke7 34.Qg7 Ke6 35.Qg6 Ke7 36.Qg7 Ke6 37.Rd5 Qe8+–) 33.Bc3 Ne5 34.Be5 1–0. Piszcz,Kazimierz – Wantoch Rekowski,Jacek, corr 2.AMM Poland, 1994.

6.Bc3 cb5 7.cb5 Bd6 8.d3 =+.

6.Bc3 c5 7.d4 (7.Bf6 Qf6 8.Nc3 dc4 9.Ne4 Qe6=) 7...cd4 (7...Bg4 8.Be2 Be2 9.Qe2=+) 8.Bd4 Bb4 (8...Be6 9.c5=) 9.Bc3 (9.Nd2 Bg4 10.Qc2 Be6=) 9...Qa5 (9...Bc3 10.Nc3 Bg4 11.Qc2=) 10.Qc2 (10.Qd2! Bc3 11.Nc3 dc4 12.Bc4+=) 10...0–0 (better is 10...Be6=+) 11.Nh3 (11.a3 Bc3 12.Qc3 Qb6=+) 11...a6 (11...Bh3 12.gh3 dc4 13.Bc4 Nbd7–/+) 12.a4? (12.ba6 Bh3 13.ab7 Ra7 14.gh3 Rb7 15.Bb4 Rb4=+) 12...Bc3 (12...ab5!? 13.cb5 Bh3 14.gh3–+) 13.Nc3 (13.Qc3 ab5 14.Qa5 Ra5 15.cb5 Bh3 16.gh3–+) 13...Bh3–+ 14.gh3 Rc8 15.Ra3 (15.Rc1 dc4 16.Bg2 Nbd7–/+) 15...ab5 (better is 15...dc4!? 16.Bg2–+) 16.cb5 d4! 17.ed4 Nd5 18.Be2 Rc3 19.Rc3 Qc3 (19...Nc3 20.0–0–+) 20.Qc3 Nc3 21.Bc4 (21.Kd2 Ne2 22.Ke2 Ra4 23.Rc1–+) 21...Ra4 22.Bb3 Ra1 (23.Kd2 Rh1 24.Kc3 Kf8–+; better is 22...Rd4!? 23.Rg1 Nb5 24.Rg5–+) 0–1. Hasler,Ueli – Cane,Luisito, E–7–053 CiF, 2002.

6.Nc3 Bb4 7.a3 Bc3 8.Bc3 0–0 9.Qb3 Be6 10.a4 dc4 11.Bc4 Bc4 12.Qc4 cb5 13.ab5 Nd5 14.Qe4+/– Re8 15.Qd4 Nc3 16.Qc3 Qb6 17.Qa5 Nd7 18.Nf3 h6 19.0–0 a6 20.Qb6 Nb6 21.ba6 ba6 22.d4 a5 23.Ne5 a4 24.Rfc1 f6 25.Nd3 Red8 26.Nc5 Rdc8 27.g3 g5 28.Ra3 Kf7 29.Rca1 Kg6 30.Na4 Nc4 31.R3a2 h5 32.Nc5 Rab8 33.Ra6 Rd8 34.Kg2 Nd2 35.Re6 Kf7 36.Raa6 Nc4 37.Rf6 Kg7 38.Rg6 Kf7 39.Rg5 Nb6 40.Rh5 Ke7 41.Rh6 Nd5 42.Rh7 Ke8 43.Raa7 Ne7 44.Rae7 Kf8 45.Ne6 Kg8 46.Reg7 1–0. tightfist – iboyd (1885), net–chess.com, 2006.

6.Nc3 Bb4 7.Qb3 a5 8.a3 Bc3 9.Bc3 Nbd7 10.Rc1 0–0 11.d4 ed3 12.Bd3 Nc5 13.Qc2 Nd3 14.Qd3 dc4 15.Qd8 Rd8 16.Bf6 gf6 17.bc6 b5 18.a4 b4 19.Rc4 Be6 20.Rc1 Bb3 21.Ra1 Rac8 +/–.

6.Nc3 Bb4 7.Qb3 a5 8.a3 Bc3 9.Bc3 Nbd7 (9...0–0 10.Rb1=) 10.Rc1 (10.bc6 bc6 11.Qa4 Bb7=) 10...0–0 11.d4 (11.bc6 bc6 12.cd5 cd5=) 11...ed3 12.Bd3 Nc5 13.Qc2 Nd3 (13...Be6 14.Be2=) 14.Qd3 dc4 (14...Be6 15.Nf3=) 15.Qd8 Rd8 16.Bf6 gf6 17.bc6 b5 (17...Be6 18.cb7 Ra7 19.Nf3=) 18.a4 (18.Nf3 Be6+=) 18...Be6 (18...Ba6!?+=) 19.ab5+= Rdb8 20.Rb1 Bd5 (20...Bf5!? 21.Rb2 Be4=) 21.Ne2+= Bc6 22.Nc3 (22.bc6 Exploits the pin 22...Rb1 Theme: Double Attack) 22...Bd7 (22...Bg2? 23.Rg1+–) 23.Ke2 a4 24.Rhd1 Rb7 25.Rd2 a3 26.Ra2 Ra5 Increasing the pressure on the isolated pawn on b5 27.Rba1 (27.b6 Kf8+=) 27...Bb5= 28.Ra3 Ra3 29.Ra3 Bd7 (29...Bc6 30.Ra8 Kg7 31.Rc8 Bg2 32.Rc4 Rb2 33.Ke1=) 30.Ne4 (30.Ra2 Kg7+=) 30...Rb2= 31.Ke1 Kg7 32.Rc3 Rb1 33.Ke2 Rh1 (33...Rg1 34.Kf3 (34.Rc4? Bb5 35.Nd6 Bc4 36.Nc4 Rg2–+) 34...f5 35.Nd6 Bc6 36.Kf4 Rg2 37.f3 (worse is 37.Nc4 Rf2 38.Ke5 f6 39.Ke6 Rh2–/+; 37.Nf5?! Kf6 38.f3 Bd7=) 37...Rh2 38.Nf5 (worse is 38.Rc4 Rh4 39.Kg3 Rc4 40.Nc4 Kf6–/+) 38...Kf6 39.Rc4=) 34.h3 (34.Nd6 Rh2 35.Kf3 Be6 36.Nc4 Rh1+=) 34...Rg1+= 35.Kf3 (worse is 35.Rc4 Bb5 36.Nd2 Bc4 37.Nc4 Rg2–/+) 35...f5 36.Nd6 Bc6 37.Kf4 Rg2 38.Nf5 (38.f3 Bd5+=) 38...Kf6= 39.f3 Bd7 40.e4 Bf5 41.ef5 Rg5 ½–½. Streit,J – Keil,A, corr DDR, 1974.

6.Nc3 Bb4 7.bc6 Nc6 8.cd5 Bc3 9.Bc3 Qd5 10.Bf6 gf6+=.

6.Nc3 Be7 7.cd5 cd5 8.d3 0–0 9.de4 Ne4 10.Qd5+/– Qd5 11.Nd5 Bd6 12.Nf3 Be6 13.Rd1 Bd5 14.Rd5 Bb4 15.Ke2 a6 16.Rd4 Nc3 17.Bc3 Bc3 18.Rd3 Bf6 19.a4 ab5 20.ab5 Ra2 21.Rd2 Rd2 22.Kd2 Nd7 23.Bd3 Ne5 24.Ne5 Be5 25.Rc1 Rd8 26.f4 Bb2 27.Rc7+– Rb8 28.Bc4 b6 29.Bf7 Kh8 30.e4 Bd4 31.e5 Bc5 32.e6 Rd8 33.Ke2 Bd6 34.Rb7 1–0. marcosramos (2410) – petrossian (1995), net–chess.com, 2007.

6.Nc3 Be7 7.cd5 cd5 8.d3 Nbd7 9.Nge2 0–0 10.Rc1 Nc5 11.Nd4 Bd6 12.h3 Qe7 13.Be2 Qe5 14.Na4 Na4 15.Qa4 Qg5 16.g4 Re8 17.Qb3 Be5 (17...Qg6 18.b6 ab6 19.Nb5+=) 18.h4 Qg6 19.g5 Nd7 20.Rg1 h5 (20...ed3 21.Qd3 Qb6 22.Qc3+=) 21.Qd5+/– Nf6 22.Qb3 Bh3 23.de4 Ne4 24.Bd3 Rad8 25.Qb4 Bg4 26.Rc4 Bh2 (26...Bh2 27.Rg2 Bb8+/–). van Rooijen,Peter – Pagano,Nunzio, corr or02–026, 2003.

6.Nc3 Be7 7.cd5 cd5 8.Nge2 0–0 9.Nd4 (9.d3 Nbd7=) 9...Nbd7 (9...Bc5 10.Na4 Bd6 11.Rc1=) 10.Be2 Nc5 (10...Bd6 11.d3=) 11.Qc2 (11.0–0 Ne6=) 11...Ne8 (11...a6 12.0–0=) 12.0–0 f5? (better is 12...Nf6!?=) 13.Nd5!+/– Bd6 (13...Qd5 Decoy theme: d5 14.Bc4 A pinning theme) 14.Bc4 Kh8 15.Nc3 (15.Rac1 Nf6 16.Nf6 Qf6+/–) 15...Rf6 (15...Be5 16.Na4 Na4 17.Qa4+/–) 16.f4 Rh6 17.g3 (17.Rac1 Qh4 18.h3 Bd7+/–) 17...Nf6 18.Kg2 b6 (18...Qe8 19.h3+/–) 19.Nc6 (19.Nd5 Bd7 20.Nf6 Qf6+/–) 19...Qe8+= 20.Rh1 (20.Be2 Bb7+=) 20...Bb7 21.Nd4 Qh5 22.h4 (22.h3 Nd3 23.Raf1 Bc5=) 22...Nd3 23.Raf1 Qg4 24.Be6 g6 (better is 24...Nh5 25.Nce2 Re6–+) 25.Nc6 Ne1 (worse is 25...Nb2 26.Qb2 g5 27.Ne4 gf4 28.d3+/–) 26.Kf2 (26.Re1!? Qf3 27.Kg1 Qg3 28.Kf1 Qf3 29.Kg1 Qg3 30.Kf1 Qf3 31.Kg1 Qg3=) 26...Nc2+= Do you see the mate threat? 27.Ne4 Qf3 (27...fe4 28.Bf6 A beautiful mate combination) 28.Kf3 The mate threat is Bxf6 28...fe4 29.Kf2 (29.Ke2!? Rf8 30.Rc1+–) 29...Kg7+= 30.g4 Re8 (30...Bc6 31.g5 Bb5 32.Bf6 (32.gh6?! Kh6 33.Bf6 Bf1=) 32...Kf8 33.gh6 Bf1 34.Bd5+–) 31.Bb3 (31.Bd7! Rf8 32.g5 Nb4 33.Nb4 Bb4+–) 31...Bc6 Black fights for the Initiative 32.bc6 White threatens strongly g5 32...Nb4 33.g5?? (better is 33.Bf6 Kf6 34.g5 Kf5 35.gh6 Nc6 36.h5+–) 33...Nd3= 34.Ke2 (34.Kg2 Nb2 35.gh6 Kh6+=) 34...Nb2+= 35.gh6 (35.gf6? Kf6 36.h5 gh5–+) 35...Kh6 36.Rc1 (36.Rhg1!? Rc8 37.f5+=) 36...Nd3–/+ 37.Rc4 Nh5 (better is 37...Rc8!?–/+) 38.Rg1= Nc5 39.Rd4 (39.Bc2!?+=) 39...Be7–/+ (worse is 39...Nb3 40.Rd6 (worse is 40.ab3 Bc5 41.Rc4 Nf4 42.Kf1 Nd3–+) 40...Na5 41.f5+/–) 40.Bf7 (40.Bd5!?–/+) 40...Rc8–+ 41.Bd5 Bh4 (better is 41...Nf6!?–+) 42.Be4–/+ Ne4 43.Re4 Ng3 (43...Rc6!? 44.Ra4 Rc7–/+) 44.Rg3+= Bg3 45.Re6 Bh4 (45...Kg7 46.Re7 Kg8 47.c7–/+) 46.d4= Kg7 47.d5 Kf7 48.Re4 (48.e4 Be7=) 48...Bf6 (48...Be7 49.Kf3+=) 49.Ra4= Rc7 50.Rc4 (50.e4!?=) 50...Ke7+= 51.e4 Kd6 52.Rc2 (52.Rc1 g5 53.fg5 Bg5+=) 52...g5–/+ 53.e5?? (better is 53.fg5 Bg5 54.Kd3–/+) 53...Be5!–+ 54.fe5 Ke5?? (better is 54...Kd5 55.Rd2 Ke5–+) 55.Rd2–/+ Kd6 56.Kf3 h5 57.Ke4 (57.Rd3 a6–/+) 57...Rf7 58.Rc2 h4 59.Kd4 (59.Rg2!? Rg7 60.Rf2–+) 59...g4 60.Re2 Rf4 61.Kd3 Kd5 62.c7 (62.Rc2 Rf3 63.Ke2–+) 62...Rc4?? (better is 62...Rd4 63.Ke3 Rc4 64.Rd2 Ke5–+) 63.Rc2?? (better is 63.Re5 Kd6 64.Kc4 Kc7 65.Re4+–) 63...Rc2?? (63...Rd4 64.Kc3 Rc4 65.Kd2 Rc7 66.Rc7 Ke4+–) 64.Kc2+– h3 (64...Ke4 65.c8Q Kf3 66.Kd3 b5 67.Qb7 Kf4 68.Qa7 h3 69.Qe3 Kf5 70.Qe4 Kg5 71.Qe5 Kg6 72.Qb5 h2 73.Qe8 Kf6 74.Qh8 Ke6 75.Qh2 Kd7 76.a4 g3 77.Qh3 Kd6 78.Qg3 Ke6 79.a5 Kf5 80.a6 Ke6 81.a7 Kd5 82.a8Q Kc5 83.Qa5 Kc6 84.Qgc7) 65.c8Q h2 66.Qf5 Kc6 67.Qe4 (67.Qg6 Kb7 68.Qh7 Ka6 69.Qh2 Kb7+–) 67...Kb5 (67...Kd6 68.Qf4 Kd5 69.Qh2+–) 68.Qe5 (68.Qe5 Kc4 69.Qh2+–) 1–0. Plock,Joerg – Vlach,Michael, Landesliga2 Ost, 2000.

6.Nc3 Be7 7.cd5 cd5 8.Nge2 0–0 9.Nd4 Bg4 (9...Bc5 10.Nb3 Bd6 11.Rc1+=) 10.Be2 Be2 11.Nce2 Bc5 (11...Nbd7 12.0–0+=) 12.0–0= Bd6 (12...Nbd7 13.d3=) 13.Nf5 Bc7 14.Rc1 Ng4?? (better is 14...Nbd7=) 15.Nf4+– (15.Ng7 Bh2 16.Kh1 Qg5–/+; 15.Bg7?! Bh2 16.Kh1 Re8+/–) 15...Nf6?? (15...Qg5 16.Rc7 Qf5 17.Nd5 Qd5 18.Qg4 g5+–) 16.Rc7! Qc7 17.Bf6 gf6 (17...Rc8 18.Nd5 Qc5 19.Nde7 Kf8 20.Bg7 Ke8 21.Nc8 Kd7+–) 18.Qg4 Kh8 19.Qg7 1–0. DEFFM – guestKING, freechess.org, 2017.

6.Nc3 Bf5 7.Rc1 Nbd7 8.Nge2 Bg4 9.h3?? (9.Qc2 Rc8=) 9...Bh5 (better is 9...Nc5 10.Qc2 Nd3 11.Kd1 Nf2 12.Ke1 Nd3 (worse is 12...Nh1 13.hg4 Ng4 14.Ne4 Qh4 15.g3 Ng3 16.N4g3–+) 13.Kd1 Be2 14.Ne2 cb5 15.cd5 Nf2 (15...Nc1?! 16.Bf6 Qf6 17.Qe4 Kd8 18.Nc1–+) 16.Ke1 Nh1–+) 10.Qc2= Bg6 (worse is 10...dc4 11.bc6 (11.Ne4?! cb5 12.Nf4 Bg6 13.Nf6 Nf6 14.Ng6 hg6+=) 11...bc6 12.Ne4+/–) 11.Nf4 Ne5? (better is 11...Rc8!?+=) 12.Ng6 (12.bc6 bc6 13.cd5 cd5+–) 12...Ng6 (12...hg6 13.bc6 bc6 14.cd5 cd5 15.Ne4 Nfd7 16.Be5 Ne5 17.Bb5 Ke7+–) 13.bc6+– bc6 14.cd5 Be7? (better is 14...Nd5 15.Nd5 Qd5+–) 15.dc6 a6 (15...0–0 16.Ne4 Ne4 17.Qe4+–) 16.Ne4 Qc7 17.Nf6 gf6 18.Qf5 0–0 (18...Rb8 19.Bf6 Bf6 20.Qf6+–) 19.Bf6 Bf6 20.Qf6 Rfd8 21.Be2 (21.Bc4!? Ne5+–) 21...Rd6 22.Qc3 Rad8 (22...Ne7 23.Bf3+–) 23.d4 Ne7 (23...Rc8 24.Ba6 Rc6 25.Qc5+– (25.Bc8 Rc3 26.Kd2 Rc1 27.Rc1 Qa5 28.Rc3 Qa2 29.Rc2 Qa5 30.Rc3 Qb5–+)) 24.Bf3 (24.Ba6?! Rc6 25.Bc4 Rc8+–) 24...Rb8 (24...Nd5 25.Bd5 Rd5 26.0–0+–) 1–0. Merten,Rainer – Gross,Wilhelm, xv, 1987.

6.Nc3 Bf5 7.cd5 cd5 8.Nge2 Bc5 9.Ng3 Be6 10.d4 Bb4 11.Rc1 Qa5 12.Qd2 Nbd7 13.a3 Bd6 (better is 13...Bc3!? 14.Qc3 Qc3 15.Rc3 Nb6=) 14.Nce4+/– Qd2 15.Nd2 0–0 16.Bd3 Rfc8 17.0–0 g6 18.Rc8 Rc8 19.Rc1 Rc1 20.Bc1 Nh5 (better is 20...h5!?+/–) 21.Nh5+– gh5 22.Nb3 b6 23.Nd2 h4 24.Nf3 h3 25.Ng5 hg2 (25...Nf8 26.Ne6 Ne6 27.g3+–) 26.Bh7 Kg7 27.Ne6 (27.Bd3 Kf6 28.h4 Ke7+–) 27...Kh7 (27...fe6 28.Bc2+–) 28.Nd8 Kg6 29.Nc6 Bb8 (29...Kf5 30.Na7 Nf8 31.Nc8+–) 30.Ne7 (worse is 30.Kg2 Kf5+–; 30.Nb8?! Nb8 31.Kg2 a5+–) 30...Kh5 31.Nd5 (worse is 31.Kg2 Nf6+–) 31...f5 32.Ne7 Kg4 (32...Kg5 33.f3+–) 33.Kg2 Nf6 (33...Kg5 34.e4 Bf4 35.Bf4 Kf4 36.e5+–) 34.f3 (34.f3 Kh5 35.Nf5+–) 1–0. woschkat (1990) – katchum, net–chess.com, 2001.

6.Nc3 Bg4 7.f3 ef3 8.Nf3 Bd6 =+.

6.Nc3 Bg4 7.Be2 Be2+= 8.Nge2 (8.Qe2 cb5 9.Nb5 Nbd7+=) 8...dc4–/+ 9.Qa4 Nbd7 10.bc6 Nc5 11.Qc4 bc6?? (11...Nd3 12.Kf1 Nb2–/+) 12.Nf4+= Rb8 13.Ba3 Qa5 14.Bc5 Qc5 15.Qa4 Rb4 16.Qa6 Kd8 17.0–0 g5 18.Nfe2 Qb6 19.Qb6 Rb6 (19...ab6?! 20.f3 Ke8 21.Rac1=) 20.f3 ef3 21.Rf3 Be7 22.Raf1 c5 23.Rf5 h6 24.Ng3 (24.d3 a6=) 24...c4 25.a4 Kc8 26.Rb5 Kd7 27.Nf5 Rb5 28.ab5 Bc5 29.Nd6 Bd6 30.Rf6 Ke7 31.Nd5 Kd7 32.e4 (worse is 32.Rf7 Ke6 33.Ra7 Kd5–+) 32...Rf8 33.Rh6 Rb8 34.Rf6 (34.Nc3 Rb6 35.Rh5 Bc5 36.Kf1 Be7+/–) 34...Rb5= 35.Rf7 Kc6 36.Ne7 Be7 37.Re7 Rb2 38.Ra7 Rd2 39.Ra3 (39.Ra6!? Kd7 40.Rg6=) 39...Re2+= 40.Rg3 Re4 41.Kf2 (41.Rg5 c3 42.Rg6 Kd5–+) 41...Re5–/+ 42.Re3 Ra5 (42...Re3 43.Ke3 Kc5 44.h3–/+) 43.g3+= Ra2 44.Kf3 Rh2 ½–½. Nebe,Lutz – Uiess,Heinz, corr ICCF, 1988.

6.bc6 bc6 7.cd5 cd5 8.Bb5 Bd7 9.Qa4 Be7 10.Bd7 Nbd7 11.Nc3 0–0 12.Nge2 Nc5 13.Qc2 Nd3 14.Kf1 Rb8 15.Bc1 Bb4 16.f3 Qc7 17.fe4 de4 18.a3 Ba5 19.Ra2 Rfe8 (better is 19...Rfc8 20.g3 Nd5–+) 20.Ng3?? (better is 20.Ne4 Re4 21.Qd3–/+) 20...Bc3–+ (20...Nc1?! 21.Qc1 Qc4 22.Nge2 Bc3 23.Rc2 Bd2 24.Rc4 Bc1 25.Rc1–+) 21.dc3 Qc4 22.Qe2 Rb1 (worse is 22...Qc3 23.Rc2 Rec8 24.Rc3 Rc3 25.Qd2 Rc1 26.Ke2 Rh1 27.Nh1–+) 23.Rc2 Rc8 24.h3 Nc1 25.Rc1 (25.Qc4 Rc4 26.Kf2 Nd3 27.Ke2 Rh1 28.Nh1–+) 25...Rc1 26.Kf2 Qe2 27.Ke2 R1c3 (27...Rc2!? 28.Kd1 Rg2 29.Ne2–+) 28.Rd1 Ra3 29.Nf5 (29.Rd2 Ra5–+) 29...Ra2 30.Kf1 Re8 31.Kg1 g6 32.Nh6 Kg7 33.Ng4 Ng4 34.hg4 Ra3 35.Kf2 Rc8 36.Re1 (36.Rd2 Rcc3–+) 36...Rc2 37.Kg3 Rac3 (37...g5 38.Kh3–+) 38.Kh2 a5 39.Kg1 (39.Ra1–+) 39...a4 40.Ra1 Rc1 41.Rc1 Rc1 42.Kh2 a3 43.Kg3 a2 44.Kh2 a1Q 45.Kg3 Rc2 46.Kf4 Qa4 47.Kg3 f5 48.Kh3 fg4 49.Kg4 Rg2 50.Kh3 Qc2 51.Kh4 Qf2 52.Kh3 Qg3 0–1. ognisia – andy80sil71, internet, 2013.

6.bc6 bc6 7.cd5 cd5 8.Bb5 Bd7 9.Qa4 Be7 10.Ne2 0–0 11.0–0 a6 12.Bd7 Nbd7 13.Nd4 Nb6 14.Qd1 Nc4 15.Bc3 Qd7 16.d3 ed3 17.Qd3 Ne4 18.Nd2 Nc3 19.Qc3 Rfc8 20.Nc4 dc4 21.Rfd1 Bf6 22.Rac1 Rab8 23.Rb1 Qd5 24.Rdc1 Rb1 25.Rb1 g6 26.Rb6 Qe4 27.h3 Qd3 28.Qa5 Bd4 29.ed4 c3 0–1. craig4000 – UncleBulgaria, ChessWorld.net, 2014.

6.bc6 bc6 7.cd5 cd5 (worse is 7...Qd5 8.Bf6 gf6 9.Nc3+=) 8.Bb5 (8.Bf6 Qf6 9.Nc3 Be6=) 8...Bd7 9.Qb3 a6 (9...Bb5 10.Qb5 Qd7 11.a4+=) 10.Bd7 (10.Bf6 Qf6 11.Bd7 Nd7 12.Qd5–/+) 10...Nbd7+= (10...Kd7?? 11.Qb7 Qc7 12.Qa8+–; 10...Nfd7? 11.Qd5 Ra7 12.Qe4 Qe7 13.Qe7 Ke7 14.Nc3+–; worse is 10...Qd7 11.Bf6 gf6 12.Nc3+/–) 11.Ba3 (11.Bf6!? Nf6 12.Nc3+=) 11...Rb8 (11...Ne5 12.Bf8 Nd3 13.Kf1 Rf8 14.Nc3–/+) 12.Qa4 Ng4 (better is 12...Qc8–/+) 13.Bf8? (better is 13.Nh3–/+) 13...Qf6–+ (13...Kf8?! 14.d4= (worse is 14.Qa6 Nc5 15.Qa3 Qd6+=)) 14.Bg7 Qf2 (14...Qg7?! 15.Nc3 Ne3 A) 16.fe3 Qg2 17.Nd5 Qh1 18.Nf6 Kf8 19.Nd7 Ke7 20.Nb8 Qg1 21.Ke2 Qh2 (21...Qa1 22.Qe4 Kd6 23.Qd3 Ke7 24.Nc6 Kf6 25.Qa6+/–) 22.Ke1 Qh1 (22...Qb8 23.Qe4 Kd7 24.Qf5 Ke7 25.Rb1 Qg3 26.Kf1+–) 23.Ke2 Qg2 (worse is 23...Qa1 24.Qe4 Kd6 25.Qd3 Ke6 26.Qa6 Kf5 27.Nd7=) 24.Ke1 Rb8 25.Qa3 Ke8 26.Qa6 Qg1 27.Qf1 Qg7+=; B) 16.g3+=) 15.Kd1 Qf1 (15...Qg2?! 16.Bh8 Qh1 17.Kc2 Qg1 18.Qa6–+) 16.Kc2 Nf2 (better is 16...Rg8 17.Bd4 Qg2–+) 17.Na3?? (17.Nh3 Qh1 18.Nf2 Rc8 19.Nc3 Qa1 20.Ng4+/–) 17...Rc8–+ (17...Qg2 18.Bh8 Qh1 19.Qa6 Qh2 20.Nb5+/–) 18.Bc3 (18.Kb2 Nd3 19.Kb3 N3c5 20.Kb4 Rb8 21.Ka5 Qd3–+) 18...Qa1 (18...Qa1 19.Nb1 Nh1–+) 0–1. Huebner,R (2610) – Hilbert, Bet–tt–ch, 1987.

6.bc6 bc6 7.cd5 Qd5 8.Bf6 gf6 9.Nc3 +=.

6.bc6 Nc6 7.cd5 Nd5 8.Bb5 Qb6 9.Bc6 bc6 10.Qc2 Bf5 11.Nc3?? Nb4–+ 12.Na4 Nc2 13.Kd1 Qb5 14.Kc2 Qa4 15.Kc1 Ba3 16.Ba3 Qa3 17.Kd1 0–0 18.Ne2 Qb2 19.Rc1 Bg4 20.Ke1 Qb5 (20...Qb5 21.Nd4 Qd3–+) 0–1. valpa – camilojr_poa, playchess.de, 2002.

6.bc6 Nc6 7.cd5 Nd5 8.Nc3+=.

6.d3 Bb4 7.Nd2 (7.Bc3 Bc3 8.Nc3 dc4 9.dc4 Qe7+=) 7...0–0 (7...ed3 8.Bd3 dc4 9.Bc4–/+) 8.de4 (better is 8.a3!? Ba5 9.bc6 bc6 10.cd5 cd5 11.Be2+=) 8...Ne4–/+ 9.Ngf3 Bg4 10.Be2? (10.Qa4 Ba5 11.Bc1 dc4 12.Qc2–+) 10...Bf3 11.Bf3 (11.gf3 Nd2 (11...Bd2?! 12.Kf1 Bc3 13.fe4 Bb2 14.Rb1–+) 12.Qa4 Nf3 13.Kf1 Nd2 14.Kg2 Qg5 15.Kh3 Qf5 16.Kg2 Qe4 17.Kh3 Nf3–+) 11...Nd2 (11...Nd2 12.bc6 Qh4–+; worse is 11...Bd2 12.Kf1–+) 0–1. GuestZFJR – GuestJCDS, freechess.org, 2016.

6.d3 dc4 7.dc4 Qd1 8.Kd1+=.

6.d4 ed3 7.Bd3 Be7 8.cd5 cd5 9.Nf3 Bg4 10.0–0 0–0 11.h3 Bh5 12.Nbd2 Nbd7 13.Qb3 Nc5 14.Qc2 Rc8 15.Qb1 Nd3 16.Qd3 Re8 17.a4 b6 18.Rac1 Bc5 19.Nd4 Ne4 20.N4b3 Nd2 21.Qd2 Qd6 22.Nc5 Rc5 23.Qd4 f6 24.Ba3 Be2 25.Bc5 bc5 26.Qc5 Qc5 27.Rc5 Bf1 28.Kf1 Re4 29.a5 Ra4 30.a6 Rb4 31.Rd5 Kf7 32.Rd7 Ke6 33.Ra7 Rb5 34.Rg7 Ra5 35.a7 f5 36.Rh7 Kf6 37.Ke2 Kg6 38.Rb7 Kf6 39.Kf3 1–0. mihai740609 – tomekzuzu, internet, 2014.

6.d4 Ng4 7.c5 b6 8.cb6 ab6 9.Nc3 Qf6 10.Nh3 Bd6 (10...Qh4 11.Qd2 Bb4 12.a3+=) 11.Be2 (11.bc6!? Nc6 12.Qb3+=) 11...Nh2 12.bc6 Nc6 13.Nd5 Nf3?? (better is 13...Qf5 14.Qb3 Be6=) 14.gf3+– Qh6 (14...Bb4 15.Nb4 Nb4 16.fe4 Bh3 17.Rh3+–) 15.fe4 Bh3 (15...Ne7 16.Qb3 Bh3 17.Bf1 Nd5 18.ed5+– (18.Qd5?! Bb4 19.Kd1 Bg4 20.Kc2 Rc8 21.Kb3 Qf6 22.Qb5 Bd7 23.Qb4 Qf2+–)) 16.Bg4 (16.Bb5 Kd8 17.Bc6 Rc8+–) 16...0–0 (16...Bg4 17.Rh6 Bd1 18.Rd6 Ba4 19.Nb6 Nb4 20.Na8 Ke7+–) 17.Rh3 Qg6 18.e5 Qe4 19.Bf3 Qf5 20.ed6 Qh3 21.Ne7 Ne7 22.de7 Rfe8 23.Ba8 Ra8 24.Qa4! Qc8 25.Rc1 Qb8 26.Qd7 h6 27.Rc7 h5 28.d5 h4 29.d6 b5 30.Qg4 f6 31.Bf6 Kf7 32.Qg7 Ke6+– 33.e8Q! Qe8 34.Re7 Qe7 35.Qe7 1–0. Fournier,Frederic – Chalvet,Philippe, Partie Libre (Active), 1995.

6.cd5 Nd5 7.Nc3 Qf6?? (7...Nc3!? 8.Bc3 a6 9.bc6 Nc6=) 8.bc6?? (better is 8.Nd5 Qd6 9.Nc3+–) 8...Nc3+= 9.Bc3 Qc6 10.Rc1 Qg6? (better is 10...Qe6!?+=) 11.Bg7!+/– Bg7 (11...Bg7 12.Rc8 Discovered attack; 11...Qg7 12.Qa4 Double attack (12.Rc8 Discovered attack; 12.Qa4 Decoy)) 12.Rc8 Kd7 13.Rh8 Bh8 14.Nh3 Nc6 15.Nf4 Qf6 16.Qg4 Ke7?? 17.Nd5+– Ke8 18.Qg8 Kd7 19.Nf6 Kc7 20.Qa8 Kb6 21.Qh8 1–0. typ48 – amuki, internet, 2013.

6.Ne2 Bg4 7.h3 Bh5 8.g4 Bg6 9.Nf4 Bd6 10.Ng6 hg6 11.Bg2 Nbd7 12.cd5 cd5 13.Nc3 Ne5 14.Qb3 Nd3 15.Ke2 Nc5 16.Qc2 Be7 17.Ba3 0–0 18.Bc5 Bc5 19.Na4 Bd6 20.Qb3 b6 (better is 20...g5+=) 21.g5+/– Ne8 22.Qd5 Nc7 23.Qe4 Re8 (23...Qg5 24.Rab1 A) 24...Nb5? 25.h4 (25.Qa8?! Ra8 26.Ba8 Qe5=) 25...Nd4 26.ed4+– (26.Qd4?! Qg2 27.Nc3 Rfd8+=); B) 24...Rac8+/–) 24.Qg4 Nb5 25.Ba8 Qa8 26.Nc3 Nc3 27.dc3 Be5 28.Qf3 Qd8 29.Rad1 Qg5 30.Rhg1 Qe7 31.Rd3 Qa3 32.Rgd1 (32.Qd5!?+–) 32...Qa2+= 33.R1d2 Qc4 34.Qd5 Qc7 35.c4 Bf6 36.Qd7 Qe5 37.Rd5 Qe6 (37...Qb8!?+/–) 38.Qe6+– (38.Qa7?! Qh3 39.Qd7 Re6 40.Qc8 Kh7+=) 38...Re6 39.Rd7 Rc6 40.Ra7 Rc4 41.Rb7 Rc6 42.Rdd7 g5 43.Rf7 Kh7 44.Kf3 Kg6 45.Rfc7 Re6 46.Kg4 Re4 47.Kf3 Re6 48.e4 Bd4 49.Rd7 (49.Rd7 Rf6 50.Ke2 Rf2 51.Kd3+–) 1–0. typ48 – janko22, internet, 2013.

6.f4!? Dopper.

6.Bf6 Qf6 7.Nc3 Bb4 8.Nge2 dc4 9.Rb1 a5 (9...Be7 10.bc6 Nc6 11.Nd5=) 10.Ng3 (10.Qa4 cb5 11.Qb5 Nc6=) 10...Qe5+= 11.bc6 Nc6 (worse is 11...Bc3 12.cb7 Bb7 13.Rb7+–) 12.Bc4 Bc3 13.Rb5 Qc7 14.dc3 Na7 15.Rd5 Be6 (15...b5 16.Bb5 Nb5 17.Rb5 Qc3 18.Qd2+=) 16.Qd4 (16.Qa4 Nc6 17.Rd2+= (worse is 17.Ne4 Bd5 18.Bd5 Rd8+=)) 16...Bd5 17.Bd5 Nb5 18.Qe4 Kf8 19.c4 (19.Bb7? Qc3 20.Ke2 Nd6 21.Ba8 Ne4 22.Be4 Qc4 23.Kf3 Qa2–+) 19...Nc3 20.Qd4 Nd5 (20...Na2 21.Nf5 f6 22.0–0+=) 21.cd5= Qc1 22.Ke2 Qc2 23.Kf3 h5 (23...Qa2 24.Nf5 f6 25.Qc5 Kg8 26.Qd6+–) 24.Rd1 Rh6 (24...h4 25.Rd2 Qb1 26.Ne4+=) 25.Rd2= Qg6 26.e4 Qg5 27.Nf5 (better is 27.Ke2!?=) 27...Rf6–/+ 28.g3 Re8 29.Kg2 Re4 30.Qe4 ½–½. pvanr (1940) – avalanche (1945), gameknot.com, 2012.

6.h3 Bd6 7.Be2 (7.bc6 bc6 8.cd5 cd5 9.Bf6 Qf6+=) 7...0–0 8.f3? (8.d3 dc4 9.dc4 Be6–/+) 8...a6 (8...Nh5 9.Qc2 Qh4 10.Kd1–+) 9.a4 (9.bc6 Nc6 10.cd5 Nd5 11.fe4 Qh4 12.Kf1 Qe4–/+) 9...ab5 (9...Nh5 10.Qc2 Ng3 11.Qc3–+) 10.ab5 Bg3 (10...Bg3 11.Kf1 Ra1 12.Ba1 dc4 13.Bc4 Be6–/+) 0–1. GuestYRDG – GuestXXMT, freechess.org, 2017.

6.h3 Be7 7.a4 Be6 (7...0–0 8.d4 (8.cd5 Nd5 9.d3 Bb4 10.Nd2 ed3 11.Bd3 Ne3 12.Bh7 Kh7 13.fe3–/+; 8.Nc3 dc4 9.Bc4 cb5 10.ab5 Nbd7 11.d3 Nb6 12.Nge2 Nc4 13.dc4–/+) 8...a6 9.bc6 Nc6 10.Ba3 Qa5 11.Nd2 Ba3 12.Ra3 dc4 13.Bc4–/+; 7...cb5 8.ab5 (8.cb5 0–0 9.d3 Be6 10.Ne2 Nbd7 11.Nd4 Rc8 12.Nc3 Qa5 13.Rc1–/+; 8.cd5 0–0 9.d3 Qd5 10.Nc3 Bb4 11.Qd2 Qd6 12.Ba3 Ba3 13.Nb5–/+) 8...Be6 9.cd5 Bd5 10.Bd4 Nbd7 11.Nc3 Bc5 12.Nd5 Bd4 13.Nf6+=) 8.cd5 cd5 9.Ne2 Nbd7 (9...0–0 10.Nd4 Nbd7 11.Nc3 Rc8 12.Rc1 Ne5 13.Be2+=) 10.Nd4 Nc5 (10...0–0 11.Nc3 Rc8 12.Rc1 Ne5 13.Be2+=) 11.Be2 (11.d3 Rc8 12.Nc3 Qa5 13.Qc2+=) 11...0–0 (11...Rc8 12.0–0 0–0 13.Nc3=) 12.Na3 (12.Nc3 Rc8 13.0–0=) 12...Rc8 (12...Nfd7 13.0–0+=) 13.0–0 Qd7 14.Ne6 Ne6 15.Nc2 Rc7 16.Nd4 Rfc8 17.a5 Ne8 (17...Bc5 18.Ne6 Qe6 19.f3=) 18.Bg4 Nd6 19.b6 ab6 20.ab6 Rc4 21.Ra5 Rb4 22.Bc3 Rb6 23.Rd5 Bf6 24.Qa1 Qe7 25.Ra5 Bd4 26.Bd4 Rbc6 27.Bc3 Nc4 28.Ra7 g6 29.f4 f5 30.Be2 Ne3 31.Rb1 Nc2 (better is 31...Nf4!? 32.Bf1 Nf1 33.Rbb7 Qc5 34.Kf1 Qc4 35.Kg1 R6c7–/+) 32.Qa2= Qc5 33.Kh1 Qf2 (better is 33...Ncd4 34.Bf1 e3=) 34.Rbb7 Ne1?? (better is 34...Qe2 35.Rh7 Qf1 36.Kh2 Qf4 37.Kh1 Qf1 38.Kh2 Qf4 39.Kh1 Ncd4 40.Rhg7 Kf8 41.Rgf7 Kg8 42.Rg7 Kh8 43.Rh7 Kg8 44.Rhg7=) 35.Rg7 Kf8 36.Raf7 (better is 36.Bb4 Qc5 37.Rh7 R6c7 38.Rac7 Rc7 39.Qa8 Rc8 40.Qc8 Nd8 41.Qd8) 36...Ke8= 37.Re7 ½–½. Krivoshapko,Alexander – Silchenko,Stepan, Omsk RUS, City Ch, 2011.

6.a4 Bb4

7.Qb3 Bd6 8.bc6 bc6 9.cd5=.

7.Qb3 Qe7 8.cd5 (8.bc6 bc6 9.cd5 cd5 10.Bf6 Qf6 11.Qd5 Qa1 12.Bb5 Bd7 13.Bd7 Ke7 14.Qe4 Kd7 15.Qb4 Nc6 16.Qg4 Kd8=) 8...cd5 9.Ne2 (9.Bf6 Qf6 10.Nc3 Bc3 11.Qc3 Qc3 12.dc3 Be6=) 9...Be6 10.Nd4 (10.Bf6 Qf6 11.Nbc3 Bd6=) 10...Nbd7+= 11.Nc2 (11.Be2 0–0+=) 11...Bd6 12.Nd4 0–0 13.Nc3 Nc5 14.Qc2 Nfd7 (14...Rfc8 15.Be2+=) 15.d3 (15.f4 ef3 16.Nf3 Rac8+=) 15...ed3 (15...Rac8 16.Rc1+=) 16.Bd3 Ne5 (16...Nd3 17.Qd3 Ne5 18.Qc2+=) 17.Be2 (better is 17.Bh7!? Kh8 18.Bf5+=) 17...Rac8= 18.0–0 Ne4 19.Rac1 Nc4 20.Ne4 Nb2 21.Nd6? (better is 21.Nc3 Nc4 22.Qd3=) 21...Rc2–/+ 22.Rc2 Qd6 (22...Na4 23.N6f5 Bf5 24.Nf5–/+) 23.Rb2+= Rc8 24.Rbb1 Rc3 (24...Qd8 25.Rfd1+=) 25.a5 f5 (better is 25...b6+=) 26.b6+/– a6 27.Ba6! Bc8? (27...ba6 28.b7) 28.Nb5+– (28.Nb5 Qe7 29.Nc3 ba6 30.Nd5+–) 1–0. Antoszkiewicz,Gerhard – Neymeyer, corr, 1971.

7.Bc3 a5 8.Be2 cb5 9.cb5 Bc3 10.Nc3 0–0 11.Qc2 Be6 12.Bd1 Nbd7 13.Nge2 Rc8 14.Qb2 Nc5 15.0–0 Nd3 16.Qb1=+ Nd7 17.Nc1 N7c5 18.Nd3=+ Nd3 19.Be2 Nb4 20.Qd1 f5–/+ 21.Rc1 Rf7 22.Nb1 Rc1 23.Qc1 Rc7 24.Qb2 Qd6 25.Rd1 b6 26.d3?? Rc2–+ 27.Qa1 Re2 28.de4 fe4 29.Nc3 Rc2 30.Rc1 Rc1 31.Qc1 Qc5 32.Qe1 Nd3 33.Qd2 Qc4 34.h3 Qb4 35.Qc2 Kf7 36.Kf1 Qb2 37.Qb2 Nb2 38.Ke2 Kf6 39.Kd2 Ke5 40.Kc2 Nd3 41.f4 Kf6 42.g4 Nb4 43.Kd2 g5 44.f5 Bf7 45.Ke2 h5 46.Kf2 Ke5 47.Ke2 hg4 48.hg4 d4 49.ed4 Kd4 50.Nd1 Nd3 51.Kd2 Ne5 52.Ne3 Nc4 53.Nc4 Bc4 54.f6 Bf7 (54...Bf7 55.Kc2 e3 56.Kb2 e2 57.Kc2 e1Q 58.Kb2 Qf2 59.Kc1 Kc3 60.Kd1 Qd2#) 0–1. valpa – ulibear, playchess.de, 2002.

7.Nc3 0–0 8.Nge2 dc4 9.Nd4 (9.Ng3 Be6–/+) 9...cb5 (better is 9...c5!? 10.Nc2 Nbd7–/+) 10.ab5+= Bg4 (10...Qc7 11.Qa4 a5 12.ba6 Na6 13.Qa2=) 11.Qa4 Bc3 12.Bc3 Nbd7 13.Bc4 Nb6 14.Qb3 (14.Qa2 Qe7=) 14...Nc4 (14...Nfd7 15.0–0=) 15.Qc4 Nd5 (15...Qd5 16.Qd5 Nd5 17.f3 ef3 18.gf3=) 16.Bb2 (16.h3!? Bc8 17.0–0+=) 16...Nb6 (16...Qg5 17.h4 Qh5 18.0–0=) 17.Qb3 (better is 17.Qc3 Qd7 18.0–0=) 17...a6 (17...Qg5!?+=) 18.0–0 (18.ba6 Ra6 19.Ra6 ba6+/–) 18...Re8 (18...Qd5 19.Qd5 Nd5 20.Ra5+=) 19.f3 (better is 19.ba6!? Ra6 20.Ra6 ba6 21.Rc1+/–) 19...ef3= 20.Nf3 (worse is 20.gf3 Bh3 21.Rf2 a5+=) 20...Bf3? (better is 20...Be6 21.Qc3 f6 22.ba6 Ra6 23.Ra6 ba6=) 21.Rf3+– Re7?? (better is 21...Nd5 22.Raf1 Re7+–) 22.Bc3 (better is 22.Rg3 Kf8 23.Bg7 Ke8 24.Bd4+–) 22...Nd5 (22...Qd5 23.Qb4 Re4 24.Bd4+=) 23.Ba5 (23.Bd4!?+=) 23...Qd7 24.b6 (24.ba6 Ra6 25.Qd3 Nf6 26.Qd7 Rd7=) 24...Rd8 (24...Rc8 25.Rff1+=) 25.Raf1 Nf6 (25...g6 26.Bb4 Nb4 27.Qb4+=) 26.Bc3 Qd5 (26...Qe6 27.Qe6 Re6 28.Bd4=) 27.Qb2 (better is 27.Qb4 Re6 28.Qh4+=) 27...Qc6? (better is 27...Ne4 28.Bd4 Qc4=) 28.Bf6+– gf6 29.Rf6 (29.Rf6 Rd6 30.Rd6 Qd6 31.Rc1+–) 1–0. GuestCNQL – GuestFLKG, freechess.org, 2017.

7.cd5 cd5 8.Qb3 (8.Bc3 Qe7=+) 8...Ba5 (8...Bd6 9.Nc3=+) 9.Nc3 (9.Bd4 0–0=+) 9...0–0 (9...Be6 10.Qc2–/+) 10.Nh3 (10.Nge2 Be6 11.Nd4 Nbd7=+) 10...Be6 (10...Bh3!? 11.gh3 d4–/+) 11.Nf4 d4 (11...Nbd7!?=+) 12.Ne6+= fe6 13.Qe6 Kh8 14.Ne2?? (better is 14.ed4 Qd4 15.Qc4+=) 14...de3–+ 15.fe3?? (better is 15.0–0–0 Bd2 16.Kb1 Qd3 17.Ka2–+) 15...Qd2 16.Kf2 Nbd7 (better is 16...Nh5 17.Bf6 Rf6 18.Qf6 Nf6–+) 17.Bf6 (17.Bd4 Bb6 18.h3 Ng4 19.Kg3 Ne3 20.Bb6 Nb6 21.Kh2–+) 17...Rf6 18.Qf6 Nf6 19.Kg3 Bc7 (19...Qe3 20.Kh4 g5) 20.Kh3 (20.Kh4 Qe3 21.Nf4 Qf4 22.Kh3 Qg4) 20...Qe3 (20...Qd7 21.Kh4 Qg4) 21.g3–+ Qf3 22.Nd4 Qh1 23.Rc1 Be5 (24.Nf5 g5–+; better is 23...g5 24.Be2 Qc1 25.Nf5–+) 0–1. whhodson – rumrunner, Caissa's Web, 2004.

7.Be2 dc4 8.Bc4 0–0 9.Ne2 cb5 10.ab5 Nbd7 11.0–0 Qc7 12.Bb3 a5 13.Ng3 Bd6 14.Nc3 Nc5 15.Bc2 Bg4 16.Qb1= Nd3 17.Nce4 Ne4= 18.Ne4 (18.Ne4 Bh2 19.Kh1 Nb2 20.Qb2=; < 18.Bd3 Nd2 19.Bh7 Kh8–/+). Istvanny – Anna_Goldberg (1825), internet, 2007.

7.Ne2 0–0 8.Nbc3 Ng4 (8...dc4 9.Ng3 Be6 10.Qc2–/+) 9.h3 (9.cd5 cd5 10.Qb3 Bc3 11.Qc3 Nf6=) 9...Nh6 (better is 9...Ne5!? 10.Nd4 Nc4 11.Bc4 Bc3 12.dc3 dc4+=) 10.cd5 (10.Qb3 a5 11.cd5 cb5 12.ab5 Re8+=) 10...cd5 11.Qb3 Bc3 12.Bc3 (12.Qc3 f6+/–) 12...Be6 13.Qb2 f6 14.Nd4 Bf7 (14...Qe8 15.d3 Nf5 16.de4 Nd4 17.Bb4 Nf3 18.gf3+/–) 15.Be2 Kh8 (15...Nd7 16.0–0+=) 16.0–0+/– a6 (16...Nd7 17.a5+/–) 17.f3 (17.a5 Qd7+/–) 17...Qd6? (better is 17...ab5 18.Qb5 b6+/–) 18.Bb4+– (18.Bb4 Qd8 19.Bf8 Qf8 20.ba6 Na6 21.Qb7+–) 1–0. GuestHTNP – GuestZFMF, freechess.org, 2016.

6.a4 Bc5

7.d4 Bb4 8.Bc3 Qa5 (8...Be7 9.Qb3+=) 9.Qb3 (9.Qd2 Bc3 10.Nc3 cb5 11.Nb5 Qd8=) 9...Bc3 10.Qc3 Qc3 11.Nc3 0–0 (11...Be6 12.c5=) 12.cd5 cd5 13.Be2 (13.f3 Be6=) 13...Rd8 (13...Be6 14.f3=) 14.f3 a6 15.b6 Rd6 (15...Be6 16.fe4 Ne4 17.Ne4 de4 18.h4=) 16.a5 Nc6 17.Kd2 h5 18.h4 Bf5 19.Nh3 Rc8 20.Ng5 (20.Nf2 Nd4 21.ed4 e3 22.Ke3 Rc3 23.Kf4 Rc2+=) 20...g6 (20...Nd4 21.ed4 e3 22.Ke3 Rc3 23.Kf4=) 21.fe4+= de4 22.Rhf1 (better is 22.Rhc1+=) 22...Nd4!–/+ 23.ed4 Rd4 (23...e3!? 24.Ke3 Rc3 25.Kf2 Rd4–/+) 24.Ke3= e4 becomes the focus of attention 24...Rd3?? (better is 24...Rb4 25.Nd1 Nd5 26.Kd2 f6+=) 25.Kf2?? (better is 25.Bd3 Rc3 26.Ne4 Ne4 27.Kd4+/–) 25...Rdc3–+ (25...Rcc3?! 26.Bd3 Ng4 27.Kg1 ed3 28.Rfe1+=) 26.Kg1 (26.Rfd1 Rc2 27.Rd4 Kf8–+) 26...Nh7 (better is 26...Kg7!? 27.Rfe1–+) 27.Nh7 Kh7 28.Rf2 (better is 28.Bh5 Be6 29.Be2–+) 28...Kg7 (28...Kh6 29.Rff1–+) 29.Kh2 (29.Bh5 Rc1 (29...gh5?! 30.Rf5 R8c5 31.Raf1+=) 30.Rc1 Rc1 31.Kh2 Be6–+ (31...gh5?! 32.Rf5 Kg6 33.Re5–/+)) 29...Rc2 30.Ra3 (30.Kg1 e3 31.Rf5 Re2–+) 30...R8c3 (better is 30...Rd8!? 31.Rg3 Rd5 32.Kg1 Ra5 33.Bh5 Ra1 34.Rf1 Rf1 35.Kf1–+) 31.Rc3 Rc3 32.Bf1 (32.Rf1 Rc2 33.Bh5 Ra2–+ (33...gh5?! 34.Rf5 e3 35.Kg3+=)) 32...e3 (32...Rc1 33.Ba6 ba6 34.Rb2–+) 33.Re2 (33.Rb2 Kf6–+) 33...Rc1 34.Kg1 (34.Re3 Rf1 35.Re7 Ra1 36.Rb7 Ra5–+) 34...Bd3 35.Re3 Rf1 (35...Bf1 36.Kf2 Bc4 37.Re5 Rc2 38.Kf3–+) 36.Kh2 Bb5 37.Re7 (37.Ra3 Bc6 38.Ra2 Rc1–+) 37...Bc6 38.Rc7 (38.Re2 Ra1 39.Re5 Ra2–+) 38...Ra1 39.Rc6 (39.Re7 Ra5 40.Re2 Ra4–+) 39...bc6 40.Kg3 Ra5 (40...Ra5 41.Kf3 Rb5–+) 0–1. Bittner – Schmidtheissler, MA, 1986.

7.d4 ed3 8.Bd3 d4 9.e4 0–0 10.Nf3 Bg4 11.0–0 Re8 12.h3 Bh5 13.g4 Bg6 14.e5 Nfd7 15.Bg6 hg6 16.Qd3 Ne5 17.Ne5 Re5 18.Nd2 Qf6 19.Ne4 Qf4 20.Rae1 Nd7 21.Bc1 Re4 22.Bf4 Rf4 23.Re4 Re4 24.Qe4 Nf6 25.Qe5 Bb6 26.c5 Ba5 27.Qd4 Re8 28.Rd1 Ne4 29.Qd7 Kf8 30.Rd4 Nc5 31.Qc7 b6 32.Qc6 Nb3 33.Rd7 Kg8 34.Qd5 Re1 35.Kg2 Kh7 36.Qb3 Re4 37.Qf7 Bc3 38.Rd8 g5 39.Qh5 1–0. brother – helmut1234, internet, 2013.

7.cd5 cd5 8.Qc2 Nbd7 9.Nc3 d4 (better is 9...0–0+=) 10.Ne4+/– Qe7? (better is 10...de3!? 11.fe3 Be7+/–) 11.Nc5+– a6?? (better is 11...Nc5 12.Bd4 Ne6 13.Bf6 Qf6+–) 12.Bd4 b6 (12...0–0 13.Nd7 Bd7 14.Qc7+–) 13.Nd7 Bd7 14.Bf6 Qf6 (14...gf6 15.ba6 0–0+–) 15.Qe4 Be6 16.Qa8 Ke7 17.Qb7 Bd7 18.d4 Qd6 19.Nf3 a5 20.Bd3 f6 21.Nh4 Qb4 22.Ke2 g6 23.Bg6! Qc4 (23...hg6 24.Ng6 A double attack) 24.Bd3 Qf7 25.Nf5 Kf8 26.Qb8 Qe8 27.Qd6 Kf7 28.Bc4 Kg6 29.Qg3 Kf5 30.f3 1–0. Zedtler,Uwe – Rosek,Holger, DESC, 1998.

7.cd5 cd5!? 8.d3 0–0+=.

7.cd5 Qd5 8.Bf6 gf6 9.Nc3+=.

7.cd5 Nd5 8.Bg7 Rg8 9.Bb2 Be6 (9...Nb4 10.Nc3 Bf5 11.Rc1+=) 10.Qh5 (better is 10.Qc2!? Nd7 11.bc6 bc6 12.Qe4+/–) 10...Nd7 11.Qh7 N7f6 12.Qh4 Be7 (12...Rg4 13.Qh8 Rg8 14.Bf6 Nf6 15.Qh6=) 13.Qh6 (13.bc6 Rg4 14.Qh6 Rg6 15.Qh8 Rg8=) 13...Qd7 (13...Rg6 14.Qh8 Rg8 15.Qh4=) 14.Nc3 Nb4 15.0–0–0?? (15.bc6 bc6 16.Rc1 Ng4=) 15...0–0–0?? (15...Nd3 16.Bd3 Qd3 17.Nge2–+) 16.Be2 (16.d4 Ng4 17.Qf4 Bd6 18.Qe4 Nf2 19.bc6 Qc6 20.Qc6 bc6–+) 16...Bg4?? (better is 16...Rg2 17.bc6 bc6–+) 17.f3+= ef3 18.Nf3 Bf3 (18...Qf5!? 19.d3 Bf3 20.gf3 Nd3 21.Bd3 Rd3 22.Rd3 Qd3 23.bc6 bc6+/–) 19.gf3+/– (19.Bf3?? Qd3 20.Qh3 Kb8–+) 19...cb5 20.Bb5 Qf5 21.e4 Qf3 (21...Qe6 22.d3+–) 22.Be2 (22.Rhf1!? Ng4 23.Qh5 Nd3 24.Kb1 Ndf2+–) 22...Nd3 (22...Qf2 23.Rhf1 Qb6 24.e5+/–) 23.Kb1 Qg2 0–1. GuestJWTP – GuestSNQY, freechess.org, 2017.

6.a4 Bd6

7.Qc2 0–0 8.c5 Bc7 9.Ne2 Nbd7 (9...Qe7 10.Nd4+=) 10.Nd4= Ne5 (10...cb5 11.ab5 a5 12.Be2=) 11.h3 (11.f4 ef3 12.gf3 Nh5+=) 11...Nfd7+= 12.Na3 Qe7 13.Rc1 f5 14.Be2 f4 15.Kd1 (15.Qc3 f3 16.gf3 ef3+=) 15...fe3–/+ 16.fe3 Rf2 (16...Nd3 17.Bd3 ed3 18.Qd3 Nc5 19.Qc2–/+) 17.g4 (17.bc6 bc6 18.g4 Rb8–/+) 17...Nf8 (17...Nd3 18.bc6 N7c5 19.cb7 Bb7 20.Nf5 Rf5 21.gf5 Nf2 22.Ke1–+) 18.Qc3+= Nfg6 19.Kc2 (19.a5 Qf6+=) 19...Bd7–/+ 20.Rcf1 Qh4 (20...Rf1 21.Rf1 Qh4 22.Rh1–/+) 21.Rf2 Qf2 22.Kb3 (22.Kb1 Rf8–/+) 22...Qg2 23.Qc1 Nd3 (23...Nf3 24.Bf3 ef3 25.Bc3–/+) 24.Bd3 ed3 25.Qg1 Qe4 (25...Qd2?? 26.Bc3 Qc3 27.Kc3+–) 26.Nb1 (26.Qc1 Rc8–/+) 26...Ba5 (26...cb5!? 27.ab5 Bb5 28.Ka2–+) 27.Nc3 (27.bc6 bc6 28.Qh2 Rf8–/+) 27...Bc3–+ 28.dc3? (better is 28.Bc3 cb5 29.ab5 Bb5 30.Kb2–+) 28...cb5 29.a5 (29.ab5 Bb5!! 30.Ba3 Bc6–+) 29...Rc8 (29...Ne5 30.Qb1–+) ½–½. Schuehler,Ernst – Roggensack_Hanspach,Peter, corr SOK–87–09, 1987.

7.Qc2 0–0 8.Ne2 Ng4 9.Ng3 Qh4 10.cd5 cd5 11.d3 f5 12.Qc3 Be5 13.Qb3 Be6 14.Be5 Ne5 15.Qb2 Nbd7 16.d4 Ng4 17.h3 Ne3 18.fe3 Qg3 19.Ke2 f4 20.Qd2 f3 21.gf3 Qf3 22.Ke1 Qh1 0–1. bauska18 – queentrapper, internet, 2014.

7.Qc2 Nbd7 8.c5.

7.Qc2 Nbd7 8.bc6 bc6 9.cd5 cd5 10.Qc6!

7.bc6 bc6 8.cd5 cd5 9.Bb5 Nbd7 10.d3=+.

7.bc6 bc6 8.Bf6 Qf6=.

7.d3 0–0 8.de4 (8.cd5 cd5 9.de4 de4+=) 8...Ne4 (8...de4 9.Qc2–/+) 9.cd5 (9.Qd4 f6 10.cd5 Be5 11.Qe4 Bb2+=) 9...Qa5 (9...Bb4 10.Ke2 Qh4–+ (10...Qd5?! 11.Qd5 cd5 12.Ba3 Ba3 13.Ra3=; worse is 10...cd5 11.Qd4 Qf6 12.Qf6 gf6 13.Ba3 Ba3 14.Ra3+=)) 10.Nd2?? (10.Ke2 cb5 11.Qd4 Nf6=) 10...Bb4 (better is 10...Nd2 11.Ke2 Nc4 (11...Nf1?! 12.Qd4 Qd2 13.Qd2 Nd2 14.Kd2–+) 12.dc6 bc6–+) 11.Ngf3 Bg4 12.Be2?? (better is 12.Bc1–/+) 12...Bf3–+ 13.0–0 (13.Bf3 Nd2 14.Ke2–+) 13...Be2 (13...Bd2?! 14.Bf3 cd5 15.Be4 de4 16.Qg4–+) 14.Ne4 0–1. GuestMKCQ – GuestNLBN, freechess.org, 2017.

7.d3 dc4 8.dc4 0–0 9.Qc2+=.

7.d4 0–0 8.c5 Be7 9.Ne2 Nfd7 10.g3 f5 11.Bg2 g5 12.0–0 Bf6 13.Nd2 Qe7 14.Qb3 Kh8 15.a5 Bg7 16.b6 a6 17.Rae1 Nf6 18.f3 Nbd7 19.fe4 fe4 20.Rf2 Ng4 21.Rf8 Qf8 22.Rf1 Qe7 23.h3 Nh6 24.g4 Nf6 25.Ng3 Bd7 26.Qd1 Rf8 27.Rf2 Nhg8 28.Qf1 Nh6 29.Kh2 Nfg8 30.Rf8 Qf8 31.Qf8 Bf8 32.Bc1 Kg7 33.Nb1 Kg6 34.Nc3 Ne7 35.Nd1 Nf7 36.Nf2 Be8 37.Bd2 Nd8 38.Be1 Ne6 39.Nf1 Ng7 40.Nd2 h6 41.Bf1 h5 42.Be2 hg4 43.Ng4 Nef5 44.Ne5 Kf6 45.Bf2 Nh5 46.Bg4 Nhg7 47.Nf1 Nh4 48.Ng3 Ng6 49.Ng6 Bg6 50.Bc8 Nf5 51.Bb7 Nh4 52.Bc6 Nf3 53.Kg2 Ke6 54.b7 1–0. kannisogoet – ferdynand2, internet, 2014.

7.cd5 cd5 8.Ne2 Bg4 9.Qb3 Be2 10.Be2 0–0 11.0–0 Qd7 12.Bf6 gf6 13.Nc3 Qf5 14.Qd5 Qd5 15.Nd5 Be5 16.Rac1 Nd7 17.Rc4 Nb6 18.Nb6 ab6 19.Re4 Rfd8 20.d4 Ra4 21.Rg4 Kf8 22.de5 Ra2 23.Bf3 fe5 24.Bb7 f5 25.Rg5 1–0. bauska18 – marlonromano1, internet, 2014.

7.Nc3 0–0

8.Qb3 Be6 9.bc6 bc6 10.Qb7 Nbd7 11.Qc6 Ne5 (and 12...dc).

8.Qb3 Be6 9.d4 ed3 10.Bd3 Nbd7 11.c5?? (better is 11.cd5 Nc5 12.Qc2 Nd3 13.Qd3 Nd5 14.Nf3–/+) 11...d4!–+ (11...Bc5?! 12.Qd1–+; 11...Nc5?! 12.Qc2–+) 12.Qc2 (12.ed4 Bb3) 12...dc3 13.Bc3 (13.cd6 cb2 14.Rd1 Qa5 15.Kf1 Qb4–+) 13...Nc5 14.Be2 Bb3 15.Qb2 Ba4 16.Bf6 Qf6 17.Qf6 gf6 18.bc6 Bc6 19.Nf3 a5 20.0–0 (20.Nd4 Be5 (20...Bg2?! 21.Rg1–+) 21.Ra3 Bd4 22.ed4 Ne6–+) 20...Nb3 21.Ra2 a4 22.Rd1 Be7 23.Nd4 Nd4 24.ed4 Rfd8 25.f3 (25.Bd3 a3–+) 25…b5 (26.Rc2 Bd5–+; 25...Rd4! 26.Rd4 Bc5 27.Rad2–+) 0–1. Grund,Karl – Krueger, corr SOK–89–47, 1989.

8.bc6 bc6 9.Rb1 Nbd7+=.

8.d3 Bb4 9.d4 (9.cd5 cd5 10.Qb3 Qa5+=) 9...Qa5 (9...Be6 10.Qb3 Qa5 11.f3–/+) 10.Qb3 (10.Rc1 Be6 11.c5 b6–/+) 10...c5 (10...Be6 11.c5–/+) 11.Be2 (11.Rd1 Be6+=) 11...Be6 (11...cd4 12.ed4 Be6 13.c5+=) 12.dc5 Nbd7 13.c6 bc6 (13...dc4 14.Qc2 (14.Bc4?? Nc5 15.Qc2 Bc4 16.cb7 Rab8–+) 14...bc6 15.bc6–+) 14.Kf1 (14.bc6 dc4 15.Qc2 Ne5–+) 14...dc4–+ 15.Qc2 cb5 16.ab5 Qb6 17.Ne4 Ne4 18.Qe4 Qb5 19.Nf3 a5 20.Nd4 Qd5 21.Qc2 c3 22.Bc1 Ne5 23.f4 Nc6 24.Ne6 Qe6 25.Kf2 Rfe8 (25...Qh6 26.Bf3–+) 26.Bf3 (26.Rd1 Ne7–/+) 26...Rad8–+ 27.Qe4?? (better is 27.Rf1–+) 27...Qe4 28.Be4 Re4 (28...Re4 29.Kf3 f5–+) 0–1. Sternik,Ryszard – Bonarek,Leszek, corr II Smok Wawelski POL, 1994.

8.d3 dc4 9.de4 Bb4 10.Qc2 cb5 11.ab5+=.

8.d3 dc4 9.de4 cb5 10.ab5+=.

8.d3 ed3 9.Bd3 (9.cd5 Nd5 10.Nd5 cd5 11.Qd3 Be6=) 9...Bb4 (9...dc4 10.Bc4 Qc7 11.Rc1=) 10.Nge2 dc4 11.Bc4 Ne4 (11...cb5 12.ab5 Be6 13.Qb3=) 12.Qb3 (12.Qd8 Rd8 13.0–0 Nd2+=) 12...Qd2 (12...Qa5 13.f3 Nd6 14.0–0=) 13.Kf1 Bc3 14.Bc3 Nc3 (14...Qd8 15.Kg1=) 15.Nc3 Qd6 16.Rd1 Qe5 (16...Qe7 17.Qb1=) 17.Rd4 (17.Bf7 Kh8+=) 17...Nd7 18.Re4 (18.bc6 bc6 19.Re4 Qg5=) 18...Qc5 (18...Qg5 19.bc6 bc6 20.Rf4+=) 19.Ke2 (19.bc6 bc6 20.Kg1 Rb8+=) 19...Nf6 (19...Qg5 20.bc6 bc6 21.Rf4 Qg2 22.Bf7 Kh8 23.Qb1 Ba6 24.Kd2–+) 20.Rd4= Bg4 (20...Qe5 21.Ke1=) 21.f3 Rae8 22.Rhd1 (22.Kf2 Be6=) 22...Be6 23.Be6 Re6 24.Qb4? (better is 24.e4=) 24...Qg5–+ 25.Kf1? (25.bc6 Qg2 26.Kd3 bc6 27.Rd6–+) 25...Qe3 (better is 25...c5 26.h4 Qe5–+ (26...cb4?! 27.hg5 bc3 28.gf6=)) 26.R4d2 (26.bc6 A) worse is 26...Rc6 27.Re1 Ng4 28.Re3 (28.Rg4?! Qc3 29.Qc3 Rc3=) 28...Ne3 29.Kf2+=; B) 26...bc6 27.Ne4 Nd5–/+) 26...Qg5 (26...Qh6 27.bc6 bc6 28.Rd8 Rd8 29.Rd8 Ne8 30.h3–/+) 27.bc6 (27.Rd8 Rd8 28.Rd8 Ne8–/+) 27...bc6 (27...Rc6 28.Rd8 Qc5 29.Qc5 Rc5 30.Nd5 Nd5 31.R1d5 Rd5 32.Rd5–/+) 28.a5 Rfe8 29.a6 c5 30.Qb7? (better is 30.Qc4!?–/+) 30...Qh4 (30...Qe5 31.Ne4 Ne4 32.Qe4 Qh2 33.Qb1–+) 31.Ne2 (31.Re2 Qc4 32.Ne4–+) 31...Qh2 32.Ng1 Qh4 33.Ne2 Ng4! 34.g3 (34.fg4 Rf6) 34...Qh1 (34...Qh3 35.Kg1 Qh2 36.Kf1 Qf2) 35.Ng1–+ ½–½. Sternik,Ryszard – Pawlowski, Augustow POL, 1972.

6.a4 Nbd7

7.bc6 bc6 8.cd5 cd5 9.Bb5 Rb8 10.Bf6 Qf6 11.Nc3 a6 12.Bd7 Bd7 13.Nd5 Qg5 14.Nf4 Bd6 15.Nge2 0–0 16.0–0 Rfd8 17.Rb1 Rbc8 18.Rb6 Bf4 19.Nf4 Qa5 20.Rb2 Qa4 21.Qa4 Ba4 22.Ra1 h6 23.g3 Bb5–/+ 24.Rb4? Rd2–+ 25.Re4 g5 26.Ng2? Rcc2 27.Ne1 Rb2 28.f4 Rf2 (28...Rf2 29.Nf3 Rg2 30.Kh1 Bc6 31.Re8 Be8–+) 0–1. hal1958 – tako, playchess.de, 2003.

7.bc6 bc6 8.cd5 Nd5 9.Qc2 Nb4 (9...Nc5 10.Ba3 Qf6 11.Bc5 Bc5+= (11...Qa1?? 12.Bd4 Qb1 13.Qb1+–)) 10.Qe4+= Be7 11.Bg7 Nc5 12.Qb4 Nd3 13.Bd3 Bb4 14.Be4 Rg8 15.Bc3 Rb8 16.Ne2 Qd6 17.0–0 Ba6 18.Re1 Bd3 19.Bf3 a6 20.Nf4 Bb1 21.Reb1 Bc3 22.dc3 Rb1 23.Rb1 Rg5 24.Rb6 Attacking the isolated pawn on c6 24...Rc5 25.Ra6 Qb8 26.h3 Qb7 27.Be2 Rc3 28.a5 Rb3 29.Bc4 Rb1 30.Kh2 Rb2 31.Kg3 Kf8 32.Bd3 Kg8 33.Bc4 h6 34.h4 Kf8 35.Bd3 Ke7 36.h5 Kf8 37.Bc4 Kg7 38.Bd3 c5 39.Bc4 Rb4 40.Be2 Ra4 41.Rb6 Qc7 42.Bf3 Rb4 (42...Ra5?! 43.Rb7 Qd6 44.Bd5=) 43.Rc6 Qa5 0–1. Van Rooijen,Peter (1700) – Gretencord,Ulrich (1895), CFriend SI–2004–0–00038 email, 2005.

7.d3 Bb4 8.Bc3 Bc5 =+.

7.d4 Bb4 8.Nc3 Qa5 9.Qb3 dc4 10.Bc4 Nd5 11.Bd5 cd5 12.Nge2 Bc3 13.Bc3 Qc7 14.Bb4 Nf6 15.Rc1 Qd7 16.0–0 a5 17.ba6 ba6 18.Rc5 0–0 19.Rfc1 Qg4 20.Ng3 Be6 21.h3 Qg6 22.Rc7 Rfb8 23.Qa3 h5 24.Bd6 h4 25.R7c2 hg3 26.Bb8 gf2 27.Rf2 Rb8 28.Qd6 Re8 29.Rc7 Bh3 30.Qa6 Be6 31.Qd6 Ng4 32.Qg3 Nf2 33.Qf2 Rc8 34.Rc8 Bc8 35.Qf4 Qc6 36.a5 Ba6 37.Qb8 Kh7 38.Qh2 Qh6 39.Qc7 Qe3 0–1. elektrooon – pocak, internet, 2013.

7.d4 cb5 8.ab5 dc4 9.Bc4–/+.

7.d4 Nb6 8.Nd2 (8.c5 Bg4 9.Qc2 Nbd7=) 8...Be7 (8...cb5 9.cb5 Bb4 10.Rc1+=) 9.a5 (9.c5 Nbd7=) 9...Nbd7 (9...Nc4 10.Nc4 dc4 11.Bc4 Bb4 12.Kf1+=) 10.Ne2 Bb4 11.Nf4 (11.Bc3!? Bd6 12.Ng3=) 11...Ba5+= 12.cd5 (12.Be2 g5 13.Nh3 dc4 14.bc6 bc6–/+) 12...cd5–/+ 13.Be2 Bc7 14.Nh3 (14.Qb3 Nb6–/+) 14...Nb6 15.0–0 (15.Nf4 Bf4 16.ef4 Qd6–/+) 15...0–0 (15...Bh3!? 16.gh3 Qd6 17.f4–+) 16.Ba3 Bd6 (16...Re8 17.Nf4–/+) 17.Bd6 Qd6 18.Nf4 Bd7 19.Qb3 Bg4 20.Bg4 Ng4 21.h3 Nh6 22.Rfc1 Nf5 23.Rc2 (23.Qd1 a6–/+) 23...Ne7 (better is 23...Nd4!? 24.ed4 Qf4–+) 24.Rca2+= Qb8 25.Qb4 Re8 26.Qc5 Nd7 (26...Kf8 27.Qb4+=) 27.Qb4 Nf6 28.Qb3 b6 29.Qb4 Qb7 30.Nb3 Rec8 31.Qd6 (better is 31.Nd2–/+) 31...Rd8?? (31...Nf5 32.Qb4–/+) 32.Qe5 (32.Ra7! Rd6 33.Ra8 Nc8 34.R1a7 Qa8 35.Ra8+=) 32...Ng6 (32...Qd7 33.Nh5 Ne8 34.Qg5–/+) 33.Qg5 (better is 33.Ng6!? fg6 34.Rc2+=) 33...Nf4–/+ 34.Qf4 Qd7 35.Nd2 Qb5 36.Ra7 Ra7 37.Ra7 Qc6 38.Nf1 b5 39.Rc7 Qb6 40.Rc5 (40.Ng3 b4 41.Nf5 Nh5 42.Ne7 Kf8=) 40...b4–/+ 41.Qe5 (41.Nd2 Qb8–/+) 41...b3–+ 0–1. GuestKQDB – GuestKJTV, freechess.org, 2017.

7.cd5 cd5 8.Ne2 (8.d3 Bb4 9.Bc3 Be7=+) 8...Bd6 9.Ng3 (9.d3 Ne5 10.de4 de4=+) 9...Ne5 10.h3 (10.d4 ed3 11.Bd3 Bb4 12.Kf1 Bg4=+) 10...0–0 (10...Be6 11.Bd4–/+) 11.Be2 Nfd7 (11...Be6 12.0–0–/+) 12.0–0=+ Nc5 13.Nc3 (13.Nh5 Bf5=+) 13...Be6–/+ 14.Nh5 (14.Qc2 Rc8–/+) 14...Ncd3 15.Ba3 Ba3 16.Ra3 Qg5 (16...Rc8 17.Ra1–/+) 17.Kh1 (17.f4!? ef3 18.Bf3 Nf3 19.Qf3–/+) 17...Rac8 18.f4 ef3 19.Bf3 Rc4 (19...Nb2!? 20.Qe2 Nbc4–/+) 20.Qe2 (20.a5 Qh4 21.Be2 Bh3–+) 20...Rh4 21.Kh2 Nf3–+ 22.Rf3 Ne5 23.Rg3? Qh5 24.Qh5 Rh5 25.Ne2 Rc8 26.Nf4 Rf5 27.Ne6 fe6 28.d4 Nc4 29.Ra2 Rf1 30.Rf3 Rf3 31.gf3 Ne3 32.Kg1 Nc2 0–1. Engles,Michael – Hall,Dick, IECG, 2002.

6.a4 Be6

7.Qc2 a5 8.Na3 Bb4 9.Ne2 Nbd7 10.Nf4 0–0 11.Ne6 fe6 12.Be2 Qe7 13.0–0 c5 14.f4 b6 15.h3 Rad8 16.g4 Qf7 17.g5 Nh5 18.Kh2 Kh8 19.Rg1 Qg6 20.Raf1 h6 21.Qd1 Nf4 22.ef4 hg5 23.Rg5 Qf7 24.Rg7 Qg7 25.Bg7 Kg7 26.Nc2 Nf6 27.Bg4 Kf7 28.Nb4 cb4 29.Bh5 Ke7 30.Rg1 b3 31.Rg7 Kd6 32.Bg4 b2 33.Qc2 Rg8 34.Rg8 Rg8 35.Qb2 1–0. brother – rantavasta, internet, 2013.

7.Qc2 Bc5?? 8.cd5+/– Qd5 9.Bf6 gf6 10.Nc3 Qd7 11.Ne4+– Be7 12.Qc3 Qd8+/– 13.bc6 Nc6 14.Bb5 Bd7 15.Nf3 Rg8 16.0–0 f5 17.Nc5+– Bc5 18.Qc5 a6 19.Bc6 Bc6 20.Qf5 Qc8 21.Qc8 Rc8 22.Nh4 Rd8? 23.d4+– Rd5 24.g3 Ra5 25.Rfc1 Kd7 26.Rcb1 Rc8 27.Ng2 Rc7 28.Nf4 Ra4? 29.Nd3?? Ra1+= 30.Ra1 Kd6 31.Ne5 Bd5 32.h4 Rc2 33.Nd3 a5 34.Nf4 Ba2 35.Kf1 b5=+ ½–½. hal1958 – ArieRoos, playchess.de, 2002.

7.Qc2 Nbd7 8.bc6 bc6 9.Ne2 c5 10.Nf4 Bd6 11.cd5 Nd5 12.Ne6 fe6 13.Qe4 Qe7 14.Nc3 N7f6 15.Bb5 Kf7 16.Nd5 Nd5 17.Bc6 Rab8 18.Rb1 Nf6 19.Bf6 Rb1 20.Qb1 Qf6 21.0–0 Rf8 22.Qh7 Ke7 23.f4 e5 0–1. emeryt85 – mar1za12, internet, 2013.

7.Qc2 Nbd7 8.bc6 bc6 9.Ne2 Bd6 (9...dc4 10.Nf4 Bf5 11.Bc4+=) 10.Nd4 Qb6 (10...Rc8 11.Nc3+=) 11.a5 Qb7 (11...Qc7 12.cd5 cd5 13.Qc7 Bc7 14.f4=) 12.cd5 cd5 13.Nb5 Bc5 (13...Qb8 14.Ra4=) 14.Bf6 gf6 15.Be2 (15.d4 Bb4 16.Nd2 0–0+=) 15...a6 16.Qc5 Nc5 17.Nd6 Ke7 With the decisive threat Qb2 18.Nb7 Nb7 19.d4 Rhg8 20.g3 Rgc8 21.0–0 (21.Nd2 Rc6=) 21...Bd7 (21...Rc2 22.Re1=) 22.Ra2 (22.f3 Nd6=) 22...Bb5 23.Bb5 ab5 Attacks the isolani on a5 24.a6 Nd6 25.Nd2 Rc6 26.Rfa1 Rc3 27.Rb1 Rc6 28.Rba1 Rc3 29.Nb1 (29.Kf1 b4=) 29...Rc1 30.Kg2 Nc4 31.a7 b4 (31...Kd8 32.Ra6 b4 33.Rf6+=) 32.Ra4+= b3 33.Rb4 b2 34.Ra6 Rb1 35.Rb7 Kf8 36.Rb8 Kg7 37.Ra8 Rg1 38.Kg1 b1Q 39.Kg2 Qc2 The mate threat is Nxe3 40.Rg8! Kg8 Decoy to g8 41.a8Q Kg7 42.Ra2 Ne3 43.Kh3 Qd1 The mate threat is Qg4 44.fe3 Qh5 45.Kg2 Qf3 46.Kh3 (better is 46.Kg1!? Qe3 47.Rf2 Qd4 48.Qc8+/–) 46...Qh5= 47.Kg2 Qf3 ½–½. Gerold,D – Melzer, corr DDR, 1982.

7.Nc3 dc4 8.Qc2 Bd5 9.Nge2 Bd6 10.Ba3 0–0 11.Bd6 Qd6 12.Nf4 Nbd7 13.bc6 bc6 14.Be2 Ne5 15.0–0 Nd3 16.Nfd5 cd5 17.f3 Rfc8 18.fe4 de4 19.Bd3 cd3 20.Qb2 Rab8 21.Qa2 a6 22.Rf6 Qf6 23.Ne4 Qe6 24.Qe6 fe6 25.Ra3 Rb4 26.a5 Re4 0–1. emeryt85 – shumarco, internet, 2013.

7.cd5 Bd5 8.Nc3 Bb4 (8...Bd6 9.Nd5 cd5 10.Ne2+=) 9.Nd5= cd5 10.Be2 (10.Rc1 Nbd7+=) 10...Nbd7+= 11.Nh3 b6 (11...Rc8 12.0–0=) 12.0–0 0–0 13.Nf4 (13.Rc1 Rc8=) 13...Bd6 14.d4 (14.d3 Bf4 15.ef4 Rc8=) 14...ed3 (14...Qc7 15.Qc1=) 15.Bd3 (15.Nd3 Rc8+=) 15...Ne5 (15...Bf4!? 16.ef4 Re8+=) 16.Be2+/– g6 (16...Bb8 17.Re1+/–) 17.Rc1 (17.Nd5 Nd5 18.Qd5 Ng4+–) 17...Bc7 (17...Re8 18.Nd5 Nd5 19.Qd5+–) 18.Qd4 Qd6? (better is 18...Re8+–) 19.Rc7! Qc7 20.Qe5 Qe5 21.Be5 Ne4 22.Rd1 Rfe8 23.Bd4 Rad8 24.f3 Ng5 25.Bf6 Nf3 26.gf3 Rc8 27.Nd5 Rc2 28.Kf2 Re6 29.Ne7 Re7 30.Rd8 1–0. orane – KingProtector, caissa.com, 2006.

7.cd5 Nd5 8.Qc2 =+.

7.cd5 cd5

8.Ne2 Bc5 9.Nd4 Bd4 10.Bd4 b6 11.Be2 Nbd7 12.0–0 0–0 13.Nc3 Rc8 14.Rc1 Nc5 15.d3 Qe7 16.Bc5 Rc5 17.d4 Rcc8 18.h3 Rc7 19.Na2 Rfc8 20.Qb3 Rc1 21.Rc1 Rc1 22.Nc1 Qc7 23.Na2 Bc8 24.Qc3 Qc3 25.Nc3 Bb7 26.f3 ef3 27.Bf3 Kf8 28.Kf2 Ke7 29.g4 h6 30.h4 Kd6 31.Ke2 Ne4 32.Kd3 Nc3 33.Kc3 Ke6 ½–½. hal1958 – Sirius, playchess.de, 2003.

8.Ne2 Bc5 9.Nd4 Bd4 10.Bd4 b6 11.Be2 Nbd7 12.0–0 0–0 13.Nc3 Rc8 14.f4 ef3 15.Bf3 Nc5 16.Bf6 gf6 (16...Qf6!? 17.Bd5 Qe5 18.Be6 fe6+/–) 17.d4+– Nb7 18.Rc1 f5 19.Qe1 Na5? (better is 19...Qd6+–) 20.Qg3 Kh8 21.Qe5 Kg8 22.Nd5 Bd5 23.Rc8 (23.Qd5?! Qg5 24.Kh1 Rc1 25.Rc1 Qe3+/–) 23...Qc8 24.Bd5 (24.Qd5?! Qc3+–) 24...Re8 (24...Qe8 25.Qg3 Kh8 26.Rf5 f6+–) 25.Bf7! Kf7 26.Rf5 Kg8 (26...Qf5 27.Qf5 Kg8+–) 27.Rg5 Kf7 28.Rg7 1–0. Pcmvr – Sonea, playchess.de, 2004.

8.Ne2 Bd6 9.Nd4 0–0 10.Be2 Nbd7 11.0–0 Rc8 12.d3 Ne5 13.de4 Ne4 14.f3 (14.a5 Qh4 15.Ba3 Nc5=) 14...Nc5+= 15.Na3 Qd7 (better is 15...Qh4!? 16.f4 Ng4 17.Bg4 Bg4+=) 16.f4+= Nc4 17.Nc4 dc4 18.Ne6 Qe6 19.Qd4 Do you see the mate threat? 19...Qh6 20.Qc4 (20.Bc4 Be7 21.Qd5 Qg6+/–) 20...Rfe8 21.Bg4 Rc7 22.Rad1 Qg6 (22...Re3? 23.Qd4 f5 24.Bf5+– (worse is 24.Qe3 fg4 25.Be5 Re7+–; 24.Qd6?! Qd6 25.Rd6 fg4+=)) 23.h3 (23.Bf3 Rd7+/–) 23...Ne4 24.Qd5 (24.Qd3 f5 25.Bf3 Bc5+/–) 24...Rc2 (24...Bc5 25.Bd4 Nc3 26.Bc3 Be3 27.Kh1 Rc3 28.Qe5+– (28.Qb7?! Qb6 29.Qb6 ab6+/–)) 25.Bd4+/– b6 26.Rc1 Rc1 27.Rc1 Bc5 28.Bf5 (28.Qd7 Rf8 29.Bf5 Qd6 30.Qd6 Nd6 (30...Bd6?? 31.Be4 Rd8 32.Kf2+–) 31.Bc5 bc5 32.Rc5 Rd8+–) 28...Nf6+/– 29.Bg6 Nd5 30.Bc5 hg6 (30...bc5 31.Rc5 Ne3 32.Bh5+–) 31.Bd4+– f6 32.Kf2 Kf7 33.a5 Re7 34.ab6 ab6 35.Rc6 (35.Rc6 Ke8 36.Kf3+–) 1–0. Zschalich,Arndt – Laske,Manfred, corr DDR–ch M776, 1985.

8.Ne2 Bd6 9.Nd4 Nbd7 10.Be2 0–0 11.0–0 Ne5 12.Nc3 Neg4 13.Ne6 Bh2 14.Kh1 fe6 15.Bg4 Bc7 16.Be6 Kh8 17.f4 ef3 18.Qf3 Qd6 19.Qh3 Rae8 20.Ba3 Qd8 21.Bf8 Rf8 22.Nd5 Be5 23.Rac1 Qa5 24.Ne7 1–0. usingprogram (1990) – paco1999 (1665), internet, 2013.

8.Ne2 Nbd7 9.Nd4 Bg4 (9...Bd6 10.Be2=+) 10.Be2 (10.f3 Bh5=+) 10...Be2 11.Ne2 (11.Qe2 Nc5 12.0–0 Nd3=+) 11...Bd6 12.d3 Nc5 13.de4 de4 14.0–0 0–0 (15.Nd2 Nd5=+; 14...Nd3 15.Bd4 Ng4 16.g3=+). Kuni,Richard – Winiger,Albert, TT–07 ETC, 2003.

8.Ne2 Be7 9.Nf4 Bf5 10.Be2= Bd6 11.0–0 0–0 12.Nc3 Bf4 13.ef4 d4 14.Na2 d3 15.Bf6 Qf6?? 16.Bg4–/+ Nd7 17.Nc3 Bg4 18.Qg4=+ Nc5 19.Nd5 Qd6–/+ 20.Ne3 Qg6 21.Ra2 f5 22.Qg6= hg6 23.Rc1 Rfc8 24.Nd5 Kf7 25.h3 Nb3 26.Rc8–/+ Rc8 27.Rb2 Rc1 28.Kh2 Nd4 29.Ne3 Ra1 30.Rb4 Ne6 31.Kg3 Nc5 32.f3 Ra4–/+ 33.Ra4 Na4 34.fe4 fe4 35.Nc4 Ke6–+ 36.Kf2 Kd5 37.Ne5 Nb6 38.Ng6 a5 39.ba6–/+ ba6 40.Ke1? a5 41.Kd1 a4 42.Kc1 a3 43.Ne7 Kc4 44.Nf5 Nd5 45.g3 g6 46.Nd6 Kb3 47.Kb1 e3 (47...e3 48.Nc4 e2 49.Na5 Ka4 50.Nc6 e1Q 51.Ka2 Qd2 52.Kb1 Qb2#; 47...a2 48.Ka1 Nb4 49.Ne4 Nc2#) 0–1. hal1958 – Marius_sah, playchess.de, 2002.

6.a4 Be7

7.Qb3 0–0 8.d4=+ Be6 9.c5 Nbd7 10.Ne2 Nh5 11.Nd2 f5 12.f4 ef3 13.Nf3 f4 14.ef4+= Nf4? 15.Qe3+– Qc7 16.Nf4 Rf4 17.Qe6 Rf7 18.Bd3 Qa5 19.Ke2 Qc7 20.Bh7! Kf8 21.Rhf1 Re8 22.Kd3 Bc5 23.Qd7 Qd7+/– 24.Ng5 Rf1?? 25.Rf1+– Ke7 26.Rf7 Kd8 27.Rd7 Kd7 28.dc5 Re7 29.Bf5 Ke8 30.Ne6 Kf7 31.Ng7 Re1 32.g4 1–0. hal1958 – Wee_Doogie, playchess.de, 2002.

7.Qb3 Nbd7 8.cd5 Nc5 9.Qc2 Qd5 10.Nc3–/+.

7.Qb3 Be6 8.Nc3 0–0 9.Qc2 Bb4 10.Nge2 a6 11.Nf4 Bf5 (11...ab5 12.cd5 cd5 13.Bb5+=) 12.cd5= Bc3 (worse is 12...Nd5 13.Ncd5 cd5 14.Bg7 Kg7 15.Qb2 Kg8 16.Qb4+/–) 13.Qc3 cd5 14.Rc1 ab5 15.Bb5 g5?? (better is 15...Nc6+=) 16.Nd5+– (16.Qf6?! Qf6 17.Bf6 gf4 18.ef4 Bd7+/–) 1–0. b4_player – ksew, casual, 2013.

7.Qb3 Be6 8.Nc3 0–0 9.Be2 b6 (better is 9...Nbd7 10.Qd1 Nb6–+) 10.Nh3+= c5 (better is 10...Nbd7+=) 11.Ng5 dc4 12.Qc2 (worse is 12.Bc4 Bc4 13.Qc4 Qd3 14.Qd3 ed3=) 12...Bf5 13.Bc4 h6 (13...Nbd7 14.f4+/–) 14.Nge4+– Ne4 15.Ne4 Bf6? (better is 15...Nd7!?+–) 16.Nf6 gf6 (16...Qf6 17.Bf6 Bc2+–) 17.Qf5 (17.Qf5 Kg7 18.Qg4 Kh8 19.Qh5+–) 1–0. b4_player – rookbynight, internet, 2014.

7.Qb3 Be6 8.Nc3 0–0 9.Nh3–/+.

7.Qc2 0–0 8.Ne2 Be6 9.Ng3 (9.Nd4 Qd7+=) 9...a6 10.Be2 ab5 11.ab5 Ra1 12.Ba1 Bd7 (12...Nbd7!?+=) 13.0–0= Re8 14.Nc3 Bb4 (14...Bd6 15.Bb2=) 15.Qb3 Bc3 16.Bc3 Be6 17.d4 (17.bc6 bc6 18.Qc2 Nbd7+=) 17...ed3 (17...dc4 18.Bc4 Bc4 19.Qc4=) 18.Bd3= Nbd7 19.Bd4 dc4 20.Bc4 Bc4 21.Qc4 Qc8 22.Rc1 Nb8? (better is 22...Re6!?+=) 23.Bf6+– gf6 24.Ne2 (24.Qh4 Re6+–) 24...Qe6 25.Nd4 (25.Qb4 Rc8+/–) 25...Qc4 26.Rc4 Rc8 (26...cb5 27.Nb5 Nc6 28.Kf1+/–) 27.Nf5 Rd8 28.g3 Kf8 29.Nd4 Rd6 (29...cb5 30.Rc7 b6 31.Nb5 Rd1 32.Kg2+/–) 30.Kg2 cb5?? (better is 30...Ke8+/–) 31.Rc8+– Kg7 (31...Ke7 32.Rb8 Rb6+–) 32.Nf5 Kg6 33.Nd6 (33.Rb8?! Kf5 34.Rb7 Rd5+/–) 33...Nd7 34.Rg8 Kh5 (34...Kh6 35.Nf5 Kh5 36.g4) 35.g4 1–0. Schwichtenberg,Juergen (1685) – Ly,Khang, Karl Mala mem op, 2004.

7.Qc2 0–0 8.Ne2 Bf5 9.Nd4 Bg6 10.h3 c5 11.Ne2 d4 12.Nf4 d3 13.Qb3 Bd6 14.Ng6 fg6 15.Nc3 Qe7 16.0–0–0 Nfd7 17.Nd5 Qe6 18.f4 ef3 19.gf3 Rf3 20.Bd3 Nf6 21.Nf6 gf6 22.Rhf1 Rf1 23.Rf1 Qh3 24.Rf6 Be7 25.Rf4 Nd7 26.Re4 Qh1 27.Kc2 Bf6 28.Re6 Bb2 29.Qb2 Rd8 30.Be4 Qh3 31.Bd5 Nb6 32.Rd6 Nd5 33.Rd8 Kf7 34.Rd5 Qg4 35.Rc5 b6 36.Rc7 Ke6 37.Qd4 Qf5 38.Kc3 Qf1 39.Qd7 Ke5 40.Qe7 Kf5 41.Qf7 1–0. ateistawolnyx – sevoslav, internet, 2014.

7.Nc3 (---> 5.a4 Be7 6.c4 c6 7.Nc3).

7.bc6 bc6 8.cd5 cd5 9.Bb5 Bd7 (9...Nbd7 10.Ne2 0–0 11.0–0–/+) 10.Bd7 (10.Ne2 Nc6+=) 10...Nbd7 (10...Qd7 11.Ne2 Nc6 12.Bf6 Bf6 13.Nbc3+=) 11.Ne2+= Nc5 (11...0–0 12.Bd4+=) 12.0–0 Nd3 13.Bd4 0–0 14.Nc1 Nb4 (14...Nc5 15.Nc3+=) 15.Nc3 a5 (15...Qd7 16.Rb1 Rab8 17.f3+=) 16.f3 Nc6 17.N1e2 Nd4 18.Nd4 Re8 (18...Bc5 19.Rc1+=) 19.fe4 de4 20.Ncb5 (better is 20.d3=) 20...Nd5 (better is 20...Qd7!?+=) 21.Rf7+/– Kf7 (21...Qd7 22.Rf5 Bb4 23.Qc2+/–) 22.Nc6 Ne3?? (better is 22...Qc8 23.Qh5 Kg8 24.Qd5 Kh8+/–) 23.Nd8+– Rad8 24.Qh5 (24.de3?! Rd1 25.Rd1 Kg6=) 24...g6 (24...Kg8 25.de3 g6+–) 25.Qh7 (25.Qh7 Kf8 26.de3+–) 1–0. DEFFM – GuestSKMou, freechess.org, 2018.

7.bc6 Nc6 8.cd5 Nd5 9.Nc3–/+.

7.d3 0–0 8.Nd2 (8.cd5 cd5 9.Nd2 Bb4+=) 8...cb5 (8...Be6 9.cd5 cd5 10.Ne2+=) 9.ab5 dc4 10.de4 Bb4 11.Qc2?? (11.Ba3 Qd2 12.Qd2 Bd2 13.Kd2 Rd8 14.Ke1=) 11...Re8?? (better is 11...Bd2 12.Qd2 Qd2 13.Kd2 c3 14.Bc3 Ne4 15.Ke1 Nc3–+) 12.Rd1?? (12.Bc4 Be6 13.Be6 Bd2 14.Qd2 Qd2 15.Kd2 Ne4 16.Ke2 Re6 17.Nh3+=) 12...Qa5?? (better is 12...Ne4 13.Bc4 Bd2 (13...Nd2?! 14.Bc3 Bc3 15.Qc3–/+) 14.Rd2 Nd2 15.Qd2 Qd2 16.Kd2 Rd8 17.Ke2 a6–+) 13.Ngf3?? (better is 13.Bf6!? gf6 14.Bc4+/–) 13...Ne4?? (better is 13...c3 14.Bc3 Bc3–+) 14.Bc4 (14.Qc4 a6=) 14...Bf5 (14...Bg4!? 15.Ra1 Qc7–/+) 15.0–0= Bg6?? (15...Ng3 16.Qb3 Nf1 17.Bf7 Kf8 18.Be8 Ke8 19.Qg8 Bf8+–) 16.Ne4+– Be4 (16...Re4 17.Bf7! Kf7 18.Ng5 Kg8 19.Ne4 Bf8 20.Qc4 Bf7+–) 17.Qb3 Bg6 (17...Bf3 18.Bf7 (18.gf3?! Rc8+–) 18...Kf8 19.Be8 Ke8 20.Qg8 Ke7 21.Qg7 Ke8 22.Qg8 Bf8 23.Bg7+–) 18.Ra1 Qc7 19.Qb4 Nd7 20.Bd4 (20.Rfc1 Qb8+–) 20...b6 (20...Nb6 21.Bb3+–) 21.Rfc1 Qd8 (21...Nc5 22.Qc3+–) 22.Qb2 (22.Bd5 Rc8 23.Rc8 Qc8 24.Ra7 Rd8+–) 22...Nf6 23.Ne5 Bh5 (23...Qd6 24.Ra3+–) 24.Nc6 Qd6 25.Bf6 (25.Be5 Qd7+–) 25...gf6 26.Be2 (26.Ra7 Ra7 27.Na7 f5+–) 26...Bg6 (26...Be2 27.Qe2 Qe6 28.Na7+–) 27.Rd1 Qe6 28.Bf3 Rac8 (28...Be4 29.Be4 Qe4 30.Qf6+–) 29.Nd4 (better is 29.Ra7!? Kg7+–) 29...Qe7 30.Nc6 Qe6 31.Ra7 Kg7 32.Bd5 (32.Qd4 Be4 33.Bh5 Bg6+–) 32...Qd6 (32...Qg4 33.Rd4 Qg5+–) 33.Bf3 (33.Qd4 Ra8 34.Rb7 Qf8+–) 33...Qe6 34.h3 (34.Qd4 Be4 35.Be4 Qe4+–) 34...Kh8 (34...Kh8 35.Bg4 Rc6 36.bc6 Qc6+–). GuestHYVZ – GuestDJCT, freechess.org, 2016.

7.d4 0–0 8.Nd2 a6 (8...Bg4 9.Be2 Be2 10.Ne2 dc4 11.Nc4+=) 9.bc6 (9.c5 b6+=) 9...bc6 (9...Nc6 10.Ba3+=) 10.Ne2 (10.Ba3 Bg4 11.Be7 Qe7=) 10...Nbd7 11.Nc3 Rb8 12.Rb1 (12.Ba3 Ba3 13.Ra3 Rb2+=) 12...Re8 13.Be2 Bd6 14.0–0 Qc7 15.h3 Nf8 (15...Bh2 16.Kh1 dc4 17.g3 Bg3 18.fg3 Qg3 19.Bg4 Qe3 20.Nc4=) 16.Qc2 (16.c5 Bh2 17.Kh1 Ne6=) 16...Qa7 (16...Ne6 17.c5 Bh2 18.Kh1+=) 17.c5 Bc7 18.Ba1 (18.f3 ef3 19.Rf3 Ne6=) 18...Rb1 (18...Be6 19.Bb2=) 19.Rb1+= a5 (19...Ne6 20.Bb2+=) 20.Rb2 (20.Bb2 Ba6=) 20...Qa8 (20...Ba6 21.Ba6 Qa6 22.Rb3=) 21.Bd1 (21.Nb3 Ba6=) 21...Ba6 22.Ne2 (22.Nb3 Bd3 23.Qd2 Rb8=) 22...N6d7 (22...Bd3 23.Qc3+=) 23.Qc3 (23.Nc1 Rb8=) 23...Qd8 24.Nb3 Attacking the isolated pawn on a5 (24.Nf4 Bf4 25.ef4 Bd3=) 24...f5 (24...Bd3 25.Nf4 Bc4 26.Nd2=) 25.Ng3+= g6 26.Ne2 (better is 26.Bc2=) 26...f4? (better is 26...Bc4!?=) 27.Nf4+/– Ne6 28.Be2 (28.Ne6 Re6 29.Bg4 Re7+/–) 28...Be2+= 29.Ne6 (worse is 29.Re2 Bf4 30.ef4 Nf4+=; 29.Ne2?! Rf8+=) 29...Re6 30.Re2 g5 (30...Rf6+=) 31.f4 (31.Rb2!?+/–) 31...gf4= 32.ef4 The passed pawn on f4 will quickly become a dangerous weapon 32...Qh4 (32...Bf4 33.Qa5 Qa5 34.Na5+=) 33.f5+= Rf6 34.Qe1 (34.Na5 Qh5 35.g4 Qg5+/–) 34...Bg3 (better is 34...Qe1!? 35.Re1 Rf5+=) 35.Qf1 (35.Qa5 Rf5 36.Qa8 Bb8–/+) 35...Qg5= 36.Qc1 (36.Na5 Rf5 37.Qd1 Qf6=) 36...Bf4 (better is 36...Qc1!? 37.Nc1 Rf5–/+) 37.Qe1 Rf5 Opening the f–file gets Black a lot of play 38.Na5 (38.Bb2 Qg6=) 38...Bg3 Black gets strong initiative 39.Qd1 Qf6 40.Bc3 (40.Nb3!?=) 40...Nc5! 41.Rc2 (41.dc5 A pinning theme 41...Qc3 Eliminates the defender c3) 41...Nd3 (41...Bf2 42.Rf2 Rf2 43.dc5 Qc3 44.Qg4 Kf8 45.Qc8 Kg7 46.Kf2 Qc5 47.Ke2 Qa5 48.Qc6 Kf7=) 42.Qg4= Rg5 43.Qc8 Exerts pressure on the backward pawn 43...Kg7 44.Nb7 (44.Nc6!? Rf5 45.Qd7 Qf7 46.Qf7 Kf7 47.a5+=) 44...Kh6 (44...Rf5 45.Qd7 Qf7 46.Qf7 Rf7 47.Nc5–/+) 45.Qd8 (45.Nd8!? Bf2 46.Kh1+=) 45...Qf4 46.Qd6?? (46.Nc5 Qe3 47.Kh1 Nf2 48.Kg1 Nh3 49.Kf1 Rf5 50.Rf2 Rf2) 46...Qd6–+ 47.Nd6 Bd6 48.Bd2 Bf4 49.Rc6 Kh5 50.Ba5 (50.g4 Kh4 51.Kg2 h5 52.Bf4 Nf4 53.Kf1 hg4 54.hg4 Kg4–+) 50...Rg8 (50...Be3 51.Kf1 Bd4 52.g4 Kh4 53.Bd8 Kh3 54.Bg5 Kg4 55.Bd8–+) 51.Bb6 Bg3 (51...Be3 52.Kf1–+) 52.a5 Re8 (52...Re8 53.Kf1 Rf8 54.Kg1 Bf2 55.Kh2 Ra8–+) 0–1. Drogi,Gerhard (2165) – Koch,Christian (2390), IECG, 1997.

7.d4 Qa5 8.Bc3 (8.Qd2 Qd8=) 8...Bb4 (8...Qc7!?+=) 9.Qd2= Bc3 10.Qc3 (10.Nc3 cb5 11.Nb5 Qd8=) 10...Qc3 (10...Qd8 11.Nd2=) 11.Nc3 0–0 (11...Be6 12.cd5 cd5 13.Nge2=) 12.c5 (12.bc6 bc6 13.Nge2 Na6+=) 12...Be6 13.Nge2 b6 14.Nf4 bc5 (14...Rc8!?=) 15.dc5+= (worse is 15.Ne6 fe6 16.dc5 Nfd7 17.bc6 Nc6+=) 15...Rc8 (15...Rd8 16.Rc1+=) 16.Ne6 fe6 17.Rc1?? (17.b6 ab6 18.cb6 Ra5=) 17...Rf8 (better is 17...Nbd7!?+=) 18.Be2 Nfd7 19.0–0 Nc5 (19...Rc8 20.f3 Nc5 21.fe4 de4 22.Bg4+=) 20.Nd5+= ed5 (20...cd5 21.Rc5) 21.Rc5+– cb5 22.ab5 Rd8 (better is 22...Nd7 23.Rd5 Nf6+–) 23.Rd5!! Rd5 Decoy theme: d5 (23...Rd7 24.Bc4 Kf8+–) 24.Bc4 A pinning theme (24.Bc4 Kf8 25.Bd5+–) 1–0. Bott,Hans Joachim – Grabowski,D, Badenweiler op, 1985.

7.d4 Be6 8.c5 Nbd7 (8...0–0 9.Nd2+=) 9.a5 (9.Ne2 0–0+=) 9...cb5 (9...a6 10.bc6 bc6 11.Nd2+=) 10.Bb5 0–0 11.Ne2 a6 12.Bd7 Qd7 13.0–0 Rac8 14.Nbc3 Rfd8 (14...Bd8 15.Nf4=) 15.Nf4= Bg4 16.Qb3 Bd6?? (better is 16...Rb8=) 17.cd6+– Qd6 18.Rac1 (18.Qb7?! Rb8 19.Ba3 Rb7 20.Bd6 Rd6=) 18...Qd7 (18...g5 19.Ba3 Qd7 20.Nfe2+–) 19.Na4 (better is 19.h3 Bf5 20.Na4+–) 19...Be2?? (19...Rc1 20.Bc1 g5+–) 20.Ne2 h6 (20...Qe7 21.Nf4+–) 21.Nb6 Qd6 (21...Rc1 22.Nd7 Rf1 23.Kf1 Rd7+–) 22.Rc8 Rc8 23.Nc8 Qc7 24.Nb6 Ng4 The mate threat is Qxh2 25.Ng3 h5 26.Nd5 Qd6 27.Ba3 Qb8 28.Ne7 Kh7 29.Qf7 h4 (29...Nh6 30.Qg6 Kh8 31.Ne4 b6 32.Ng5 Qh2 33.Kh2 Ng4 34.Kg1 Ne3 35.Qh5) 30.Qf5 Kh8 31.Qg4 hg3 (31...g6 32.Ngf5! gf5 33.Qh5 Kg7 34.Qg6 Kh8 35.Qh6) 32.Qh4 1–0. market – aabbcc01, gamecolony.com, 2007.

7.cd5 cd5 8.Nc3 0–0+=.

7.cd5 cd5 8.d3 0–0 9.de4 Ne4 10.Nf3 Bg4 11.Be2 Qa5 12.Nfd2 Be2 13.Qe2 a6 14.0–0 Bb4? (better is 14...Bf6 15.Ne4 Bb2 (< 15...de4 16.Bf6 gf6 17.ba6+–) 16.Qb2 de4+=) 15.Ne4+– de4 16.Qg4 g6? (better is 16...f6+–) 17.Qe4 Ra7 (17...Rd8 18.Qe5 f6 19.Qf6 Rd7+–) 18.Qd4 f6 19.Qd5 (better is 19.Qa7 Qc7 20.Qd4+–) 19...Kg7 20.Bd4 Nc6?? (better is 20...b6+–) 21.Ba7 ab5 22.Bc5 Bc5 23.Qc5 Rf7 (23...ba4 24.Qa5 Na5 25.Ra4+–) 24.Nc3 Ne5 (24...ba4 25.Na4 Rc7 26.Rfd1+–) 25.Ne2 Nd3 26.Qa3 Nb4 27.Rfc1 (better is 27.Qb3!? Na6 28.ab5 Qb4 29.Qb4 Nb4+–) 27...Qa4 28.Qa4 ba4 29.Ra4 Nc6 30.Nf4 g5 31.Ne6 Kg6 32.f4 Kf5 33.Nd4 Nd4 34.Rd4 gf4 35.Rc5 Kg6 36.ef4 f5 37.g4 fg4 38.Rg5 Kf6 39.Rg4 Kf5 40.Rg3 Kf6 41.Rg5 Rg7 42.Rg7 Kg7 43.Rd7 Kh6 44.Rb7 Kg6 45.f5 Kf5 46.Rh7 Kg6 47.Rh4 Kg5 48.Ra4 Kh5 49.h4 Kh6 50.Ra5 Kg6 51.Kg2 Kh6 52.Kg3 Kg6 53.Kg4 Kh6 54.h5 1–0. valpa – Nylson, playchess.de, 2003.

7.cd5 cd5 8.Ne2 0–0 9.Nd4 a6 10.Be2 a5 11.0–0 b6 12.h3 Bc5 13.Nc3 Nbd7 14.Nb3 Be7 15.d4 Bb4 16.Nd2 Qc7 17.Rc1 Qd6 18.Qb3 Bb7 19.Ndb1 Rac8 20.Ba3 Ba3 21.Qa3 Qa3 22.Na3 g6 23.Nab1 h5 24.f3 Kg7 25.fe4 Ne4 26.Ne4 de4 27.Nd2 Nf6 28.Nc4 Nd5 29.Nd6 Rc1 30.Rc1 Ba8 31.Kf2 Rd8 32.Ne4 Re8 33.Bf3 Nb4 34.Nd6 Rd8 35.Rc8 Rd6 36.Ra8 Nd3 37.Kg3 Nb2 38.Rc8 Na4 39.Bc6 g5 40.Rb8 f5 41.Rb7 Kf6 42.Be8 h4 43.Kf3 Ke6 44.Bf7 Kf6 45.Be8 Nc3 46.Rh7 Rd5 47.Rh6 Ke7 48.Bc6 Rd6 49.Rh5 Rg6 50.Rh7 Kd6 51.Rd7 Ke6 52.Rd8 Rg7 53.Re8 Kd6 54.Rf8 g4 55.hg4 fg4 56.Kf2 Ke6 57.Re8 Kd6 58.Rf8 a4 59.Rd8 Kc7 60.Ra8 Rf7 61.Ke1 Re7 0–1. mete61 – agorgol, internet, 2013.

7.cd5 Qd5 8.Nc3 Qd8 =+.

7.Ne2 Bg4 8.d3 0–0 9.Qd2 a5 10.h3 Bf5 11.Ng3 Bg6 12.Be2 Bb4 13.Bc3 Bc3 14.Nc3 Nbd7 15.d4 Re8 16.0–0 Qc7 17.bc6 bc6 18.c5 Rab8 19.Rab1 h6 20.Qc2 Rb1 21.Rb1 Rb8 22.Rb2 Rb2 ½–½. algernon (2555) – amikhlin (2515), net–chess.com, 2014.

7.Ne2 Bg4 8.h3 Be2 9.Be2 0–0 10.g4 h6 11.h4 Nh7 12.g5 hg5 13.hg5 Bg5 14.Nc3 Bf6 15.Qc2 a6 16.d3 ab5 17.de4 Ng5 18.ed5 Bc3 19.Bc3 cd5 20.f4 Ne4 21.Bd3 f5 22.Qh2 Nc3 23.Qh7 Kf7 24.Qf5 Ke8 25.Qe5 Qe7 26.Bg6 Kd8 27.Qc3 bc4 28.Rd1 Nc6 29.Rd5 Kc7 30.Qc4 Qe3 31.Kd1 Rf4 32.Qd3 Qd3 33.Rd3 Rd8 34.Rd8 Nd8 35.Rh7 Ne6 36.Bc2 Rg4 37.Bf5 Rg1 38.Kd2 Nc5 39.Bc2 Kb6 40.Kc3 Rg4 41.Bd1 Rg5 42.Kb4 Na6 43.Kc3 Ka5 44.Kc4 b6 45.Rh4 Nc5 46.Kc3 Rg3 47.Kb2 g5 48.Rd4 Rh3 49.Rg4 1–0. 7715925 – orangutandu, internet, 2013.

7.h3 0–0 A) 8.cd5 A1) 8...cd5 9.Ne2 (9.Nc3 d4 10.ed4 Qd4 11.Nge2 Qe5 12.Ng3 Bc5 13.Qc2 Re8 14.0–0–0) 9...Be6 10.Nd4 Nbd7 11.Be2 Rc8 12.0–0 Bd6 13.Nc3 Qa5 14.Ba3; A2) 8...Nd5 9.Nc3 Bf6 10.Qb1 Re8 11.Nd5 cd5 12.Ne2 Nd7 13.Nf4 Ne5 14.Be2; A3) 8...Qd5 9.Nc3 (9.Ne2 Nbd7 10.Nf4 Qg5 11.Nc3 Ne5 12.h4 Qh6 13.bc6 Nc6 14.Ncd5) 9...Qg5 10.h4 Qe5 11.d4 Qc7 12.Nh3 Bf5 13.Be2 Nbd7 14.Nf4; B) 8.Nc3–/+ d4 9.ed4 Qd4 10.Nd5 Qb2 11.Ne7 Kh8 12.Nc8 Rc8 13.Ne2 Qe5 14.Nc3.

7.h3 Nbd7 8.cd5+= cd5 9.Na3? (better is 9.Ne2+= 0–0 10.Nd4 Ne5 11.Be2 Bd6 12.Nc3 Be6 13.0–0 Nfd7 14.d3) 9...Nc5–+ 10.Rc1 b6 (better is 10...0–0!?–+) 11.Ne2?? (better is 11.d4 Ne6 12.Ne2+=) 11...Nd3 0–1. Stankovski,Marin – Penev,Valeri, Georgiev–Kesarovski Mem, Sunny Beach BU, 2004.

6.Qc2 Bd6

7.bc6 bc6 8.cd5= cd5 9.Bb5 (9.Bf6 gf6 10.Nc3 Be6=) 9...Bd7+= 10.Bd7 Nbd7 (worse is 10...Kd7 11.d3=; 10...Qd7?! 11.Bf6 gf6 12.Nc3=) 11.Ne2 0–0 12.0–0 Bh2?? (better is 12...Rc8 13.Nbc3 Qc7–/+) 13.Kh1?? (better is 13.Kh2 Ng4 14.Kh3+/–) 13...Bd6 14.g3 (14.f3 Rc8 15.Qd1 Ng4–+) 14...Ne5 (14...Rc8 15.Qa4–+) 15.Be5 Be5 16.Nbc3 Qd7 Threatening mate... how? 17.Kg2 Qg4 (17...Qf5 18.Rac1–+) 18.f3 ef3 (18...Qg6 19.fe4 de4 20.Nf4 Bf4 21.Rf4–+) 19.Rf3 Rfd8 (19...Rac8 20.d4 Bd6 21.Qf5–/+) 20.d4 Bd6 21.Rb1 Rab8 22.Nb5 (22.Rf6!? gf6 23.Nd5–/+) 22...Qe4 23.Qe4 de4 (23...Ne4 24.Rb3 Nd2 25.Nd6 Rb3 26.Nf7 Nf3 27.ab3 Ne1 28.Kf1 Kf7 29.Ke1–+) 24.Rff1 Ng4 (24...Be7 25.Na7 Ng4–/+) 25.Rfc1? (better is 25.Nd6 Ne3 26.Kg1 Nf1 27.Rb8 Rb8 28.Kf1+=) 25...Ne3–+ 26.Kh3 (26.Kf2 Ng4 27.Ke1 a6 28.Nd6 Nf2 29.Kf2 Rb1 30.Rb1 e3 31.Ke3 Kf8+–) 26...Nf5 (26...f5!? 27.Na7 Rb1 28.Rb1–+) 27.Na7 Ba3 (27...Ne3 28.Rb8 Rb8 29.Rc8 Rc8 30.Nc8–/+) 28.Nc6 Rb1 29.Rb1 Rc8 30.Rb3 Rc6 31.Ra3 Do you see the mate threat? 31...g6 (31...Kf8 32.Kg4 Nd6 33.Ra7–/+) 32.g4 Nd6 33.Ra8 Kg7 34.g5 (34.a4 f5–/+) 34...Rc2 35.Nf4 Rc3 36.Kg2 Rf3 (36...Rf3 37.Nh3 Rd3–/+) 0–1. Ewert,Jerzy – Garbacki,Michal, corr 1AMM Poland, 1991.

7.bc6 bc6 8.cd5 cd5 9.Bf6 gf6 10.Nc3=.

7.bc6 Nc6!? 8.cd5 Nb4 9.Qa4 Bd7–/+.

7.cd5= cd5 8.Bf6 gf6 9.Nc3 Be6 10.f4 (10.d3 f5=) 10...f5 11.Nge2 Qh4 (11...Nd7 12.Nd4=) 12.g3 Qf6 13.Nd4 Nd7 14.a4 (14.d3=) 14...Nb6 (14...Bc5 15.Nb3=) 15.Rc1 (15.a5!? Nc4 16.Qa4+=) 15...0–0 16.a5 Nc8 (16...Nd7 17.a6 ba6 18.ba6=) 17.Be2 (17.a6 ba6 18.ba6 Nb6=) 17...Ne7= 18.Kf2 (18.d3 Rfc8=) 18...Kh8 (18...Rfc8 19.Qa4=) 19.Nb3 (19.Qa4 Rac8+=) 19...Rac8 20.Qd1 Rfd8 21.Nd4 Bc5 (21...Ba3 22.Rb1=) 22.Qa4 Bd4 (22...b6 23.a6=) 23.Qd4+= (23.Qd4 Qd4 24.ed4+=) 1–0. Stabenow,Juergen – Roggensack_Hanspach,Peter, corr SOK–87–09, 1987.

7.cd5 cd5 8.Bf6 gf6 9.d3 f5=.

7.cd5 cd5 8.Bf6 Qf6?? 9.Qc8+– (9.Qc8 Qd8 10.Qb7+–) 1–0. Buczinski,Henryk – Wantoch_Rekowski,Jacek, corr 2AMM Poland, 1993.

6.Nc3 Bd6

7.Qb3 Be6 8.bc6 bc6 9.Qb7 Nbd7 10.Qc6 Rc8?? (better is 10...Be5 11.cd5 Nd5 12.Nd5 Rc8=) 11.Qd6+– (11.Qd6 dc4 12.Nb5+–) 1–0. GuestCZSH – GuestQZKD, freechess.org, 2017.

7.Qc2 0–0 8.0–0–0 Qe7. Leisebein.

7.Qc2 0–0 8.0–0–0 (8.bc6 bc6 9.cd5 cd5+=) 8...Ng4 (8...Qe7!?–/+) 9.d3= d4 10.Ne4 de3 11.Qc3 Do you see the mate threat? 11...f6 12.Nd6 (12.Nh3 ef2 13.Nd6 Qd6 14.Ba3=) 12...Nf2 13.Ba3 Nh1 14.Nc8 Qc8 15.Bf8 Qf8 (better is 15...Kf8!? 16.Re1 cb5 17.Qb4 Kg8 18.Qb5 Nc6+=) 16.d4= Nf2 17.Re1 cb5 Opening the e–file gets White a lot of play (better is 17...Ng4!? 18.h3 Nh6+=) 18.Qe3+/– Ng4 19.Qe6 Kh8 20.Qg4 (20.cb5 Qa3 21.Kc2 Qa4 22.Qb3 Qb3 23.Kb3 Nd7+/–) 20...Qa3 21.Kd2 (21.Kd1 Qa4 22.Ke2 Nc6+/–) 21...Qa2 (21...Nc6 22.Qe4 Qa2 23.Ke3 bc4 24.Nf3+=) 22.Ke3 Threatening mate... how? 22...Nc6 23.Qe6 Qa3 (better is 23...bc4!? 24.Nf3 Na5+/–) 24.Kf2 Qa2 (24...bc4!? 25.Nf3 c3 26.Bb5+–) 25.Kg3 Threatening mate: Qe8 (25.Kg3 Rg8 26.Nf3+–) 1–0. Engelhardt,Erhard – Kolanski,Adam, corr ICCF–Cup8 V066, 1990.

7.bc6 bc6 8.Rb1 0–0+=.

7.bc6 bc6 8.Qb3 Nbd7 9.Rb1 Nc5 10.Qc2 0–0 (10...dc4 11.Na4 Na4 12.Qa4+=) 11.cd5= cd5 12.Bb5 (12.Nb5!? Rb8 13.Bd4+=) 12...Be6 13.a3 Qc7 14.g3 (14.d4 ed3 15.Bd3 Qa5+= (15...Bh2 16.Nb5 Nd3 17.Qd3+–; 15...Nd3?! 16.Qd3 Ne4 17.Ne4 de4 18.Qe4+=)) 14...Rab8 15.Nge2 (better is 15.f3!?–/+) 15...a6–+ 16.Ba4 (16.d4 ab5 (16...Rb5?! 17.Nb5 Nd3 18.Qd3=) 17.dc5 Bc5–+) 16...Rb6 (16...Nd3 17.Kf1–+) 17.0–0 Rfb8 18.Ba1 (better is 18.Nd4–+) 18...Ng4 (better is 18...Na4!? 19.Qa4 Bd7–+) 19.Rb6–/+ Rb6 20.Rb1 (20.Nd4 Ne5–/+) 20...Nd3 Black terminates the opponent with strong threats 21.Nd1 (21.f3!? Nge5 22.fe4 Nf3 23.Kh1–+) 21...Rb1 22.Qb1 Ne1 (22...Nge5!? 23.Be5 Be5 24.Bc2–+) 23.Nd4 Ne5 24.Qa2 (24.Qb2 Nc4 25.Qc3 Na3–+) 24...N5f3 25.Nf3 Nf3 (25...ef3?! 26.Qb2 f6 27.Qb3+=) 26.Kh1 (better is 26.Kg2–+) 26...d4! 27.Qb2 (27.ed4 Ba2 Annihilates a defender: a2) 27...Be5 (better is 27...Qc4 28.d3 Qa4–+) 28.Qb1? (better is 28.Qb4 Qd6 29.ed4 Qb4 30.ab4 Nd4 31.Ne3–/+) 28...Qc4 Threatening mate... how? (28...Nd2?! 29.Qb4–+) 29.Nb2 Qe2 Do you see the mate threat? 30.Kg2 Ng5 0–1. Hasler,Ulrich – Leisebein,Peter, corr SOK–89–35, 1989.

7.bc6 bc6 8.cd5 cd5 9.Nb5=.

7.bc6 bc6 8.cd5 cd5 9.Rc1 Nbd7+=.

7.bc6 Nc6 8.Nd5 Be5 9.Be5 Ne5 10.f4=.

7.cd5 cd5 8.d3 =+.

7.f4 0–0 8.Nge2 (8.bc6 bc6 9.cd5 cd5+=) 8...Nbd7 (8...dc4 9.Qa4–+) 9.Ng3 Nc5 10.bc6 bc6 Black gets in control 11.cd5 cd5 Opening the b–file gets Black a lot of play. 12.Qc2 Ba6 13.Ba6 Na6 14.0–0 Nb4 15.Qa4 Nd3 16.Ba3 Ba3 17.Qa3 Qd7 18.Rab1 Rab8 19.Na4 Qc7 20.Nb2? (better is 20.Nf5–/+) 20...Qc2–+ (20...Qc2 21.Nd3 Rb1–+ (21...ed3?! 22.Rb8 Rb8 23.Qa7=)) 0–1. Kozun,Piotr – Garbacki,Michal, corr 1AMM Poland, 1991.

6.Nc3 Be6

7.Qb3 Nbd7 8.cd5 cd5 9.Ba3?? (better is 9.Qd1–/+) 9...d4!–+ 10.Bf8 (10.ed4 Bb3 Discovered attack) 10...Bb3 (10...Kf8 11.Qb4 Qe7 12.Qd4+=; 10...Rf8?! 11.Qa3 dc3 12.Qc3–+; 10...Nf8?! 11.Qa3 dc3 12.dc3–+; 10...dc3?! 11.Qc3 Nf8 12.d3–+) 11.Bg7 (11.ed4 Nf8 12.ab3 Ne6–+) 11...dc3 12.ab3 cd2 13.Kd1 (13.Ke2 Nc5 14.f3 Qd3 15.Kf2 Qc2–+) 13...Rg8 14.Bh6 Nd5 15.Ne2 Rg6 (better is 15...Nc5!? 16.Nd4 Qf6 17.Bc4 Qh6 18.g3–+) 16.Bf4 Nf4 17.Nf4 Rd6 18.Ne2 (18.Ra2 Qf6 19.Bc4 Nb6–+) 18...Nc5 19.Nd4 Rd4 20.ed4 Qd4 21.Bc4 (21.Rb1–+) 21...Qa1 0–1. blackiwhite (1720) – drdream (1740), internet, 2013.

7.Qc2 dc4 8.Ne4 Ne4 9.Qe4 cb5 10.Qb7+=.

7.Qc2 Bd6 8.f4 (8.bc6!? bc6 9.cd5 cd5 10.Nb5=) 8...0–0+= 9.cd5 cd5 10.Nge2 Nbd7 (10...Qe7 11.Nd4+=) 11.Nd4 Bc5 (11...Nc5 12.Ne6 Ne6 13.Rc1+=) 12.Ne6 fe6 13.Be2 Rc8 14.Qb3 (14.Rc1 Qe8=) 14...Kh8 (14...Bd6 15.0–0=) 15.Na4 (better is 15.Rc1=) 15...e5?? (better is 15...Bd6+=) 16.fe5+/– (16.Be5?! Ne5 17.fe5 Ne8=) 16...Ng4 17.e6 (17.Rc1!? Nf2 18.0–0 Nd3 19.Bd3 ed3+–) 17...Bd6+/– 18.g3 (18.Bg4 Qh4 19.Kd1 Qg4 20.Ke1 Qg2 21.Bg7 Kg7 22.Qb2 Ne5 23.Qe5 Be5 24.e7 Qh1 25.Ke2 Qf3 26.Ke1 Qf1) 18...Nde5+= 19.Be5 (19.Nc3 Nf3 20.Bf3 ef3+=) 19...Ne5 (19...Be5 20.e7 Qe7 21.Bg4 Ba1 22.Bc8 Rc8+=) 20.Nc3= (20.Qd5? Nd3 21.Bd3 Bg3 22.hg3 Qd5–+) 20...Nd3 (20...Rc5!?=) 21.Bd3+= ed3 22.Nd5 (22.Qd5? Rc3 23.e7 Qe7–+) 22...Qg5 Threatening mate: Bxg3 (22...Qg5 23.Rg1 Qe5+=). Orlik,Adam – Walczak,Bogumil, Czerniak mem11 corr9193, 1991.

7.bc6 bc6 8.cd5 cd5 9.Bb5 Bd7 10.Rc1 a6 11.Bd7 Nbd7 (11...Kd7 12.Nd5 Nd5 13.Qg4 Ke8 14.Rc8+– (14.Qe4?! Be7 15.Bg7 Rg8 16.Qh7 Rg7 17.Qg7 Nd7+–); 11...Qd7 12.Na4 Qd8 13.Bf6 gf6 14.Nc3+/–) 12.d4 Bd6 13.Nge2 Rb8 14.Ba1 Nb6 15.0–0 Bh2?? (better is 15...0–0–/+) 16.Kh1?? (better is 16.Kh2 Ng4 17.Kh3+=) 16...Bc7 17.g3 (17.Nf4 Qd6 18.Qe2 g5 19.Qa6 Qe7 20.Qb5 Kd8 21.Nfd5 Nbd5 22.Nd5 Qf8 (< 22...Rb5 23.Ne7 Ke7 24.Rc7 Nd7 25.f3+/–) 23.Nc7 Qh6 24.Kg1 Rb5 25.Nb5 Ng4–+) 17...h5 18.Kg2 Qd7 19.Rh1 g5 20.a4 (20.Kf1 h4–+) 20...Ng4 21.Ng1 Nc4 (21...h4!? 22.Qe2–+) 22.Qe2 Rb4 23.Ne4 de4 (23...Nce3!? 24.fe3 de4–+) 24.Rc4–/+ Rc4 25.Qc4 Rh6 26.Nh3 Rf6 27.d5?? (better is 27.Qc5–/+) 27…Rf2!–+ 0–1. Stabenow,Juergen – Kruger,D, corr SOK–89–47, 1989.

7.bc6 Nc6 8.cd5 Bd5 9.Nh3 Nb4 (9...Bb4 10.Nf4 Bc3 11.Bc3=) 10.Nd5 Nfd5? (better is 10...Qd5 11.Nf4 Qd6=) 11.Qa4+/– Qd7 12.Bb5 Nc6 13.Qe4 Nde7 14.0–0 (14.Ng5 Rd8 15.Rd1 a6+–) 14...Qd2 15.Rfd1 (better is 15.Rab1!?+/–) 15...Qb2= 16.Qd3 f6 17.Qd7 Kf7 18.Bc4 Kg6 19.Qg4 Kh6 20.Qh4 Kg6 21.Nf4 Kf5 22.Qh3 Ke4 23.Bd3 Ke5 24.Qe6 1–0. pcmvr (1700) – bonaparte (2000), net–chess.com, 2006.

7.cd5 cd5 8.Nge2 Be7 9.Nf4 Nbd7 10.Be2 (10.d3 Qb6=) 10...Nb6 (10...Bd6 11.Ne6 fe6 12.Rc1=) 11.Ne6 (11.d3 ed3 12.Bd3 0–0=) 11...fe6 12.Bh5 g6 13.Bg4 (13.Be2 Rc8=) 13...Qd6 (13...Nc4 14.Rb1 Ng4 15.Qg4+=) 14.0–0 (better is 14.Be2!?=) 14...Nc4–/+ 15.Bc1 Ne5 (15...Ng4!? 16.Qg4 Bf6–/+) 16.Be2+= 0–0 17.d3 (17.a4 Qc7=) 17...ed3 (17...Qc7 18.Na4–/+) 18.Bd3+= Nd3 (18...Rac8 19.Ne2+=) 19.Qd3 Nd7 (19...Rac8 20.Bb2+=) 20.Bb2 (20.e4+=) 20...Bf6 (better is 20...Ne5!? 21.Qe2 Nc4+=) 21.Ne4+= Qe7? (better is 21...Qc7 22.Nf6 Nf6+=) 22.Nf6+– Nf6 23.Ba3 Qf7 24.Bf8 Rf8 25.Rac1 Ne4 26.f3 Nd6 27.e4 Nc4 28.ed5 ed5 29.Rfd1 (29.Qd4 Nb6+–) 29...Nb6 (better is 29...Nb2!? 30.Qd5 Nd1 31.Rd1 Re8 32.Qf7 Kf7+/–) 30.Qd4 Re8 (30...Qg7 31.a4+–) 31.a4 Qe6? (31...h6+–) 32.a5 (32.Rc7!? Qe5 33.Qe5 Re5 34.Rb7 Na4+–) 32...Nc4 33.Re1 Qe1 34.Re1 Re1 35.Kf2 Rc1 (35...Re5 36.Qa7 Kf8 37.Qb7+–) 36.Qd5 Kf8 37.Qb7 1–0. Winterfeldt,Steffen (1785) – Fising,Robert (1645), Mittelfranken–ChTB2b, 2009.

6.cd5 cd5

7.a3 Bd6 8.Bd4 (8.d3 0–0+=) 8...0–0 9.Qb3 (9.Nc3 Nbd7+=) 9...Be6–/+ 10.Nc3 (10.d3 Nbd7–/+) 10...Be7 (10...Nbd7 11.Rc1–/+) 11.Nge2+= Qd7 (11...Nbd7 12.Nf4+=) 12.Nf4= d5 draws heavy fire 12...Rd8 (12...Bd6 13.Nfd5 Nd5 14.Nd5–/+) 13.Ne6 (13.d3 Bf5+=) 13...Qe6= 14.Be2 (14.d3 Qf5=) 14...Nbd7 15.Ra2 (15.f3 Nc5 16.Bc5 Bc5 17.fe4 Ne4 18.Ne4 Qe4=) 15...Nc5 (15...Bc5 16.Bf6 Nf6 17.d4 ed3 18.Bd3+=) 16.Bc5 (16.Qc2 Qd6=) 16...Bc5+= 17.d4 Be7 (17...ed3 18.Bd3 Rac8 19.Ne2+=) 18.0–0= b6 (18...a6 19.Rc2=) 19.f3 (19.Rc1 Kh8+=) 19...Rd6 (19...Rac8 20.fe4 Ne4 21.Ne4 Qe4 22.Bh5=) 20.fe4+= de4? (better is 20...Ne4!? 21.Ne4 Qe4+=) 21.Bc4+– Qd7 22.Bf7 Kh8 23.Rf4 Rc8 24.h3 (24.Rd2 Qb7+–) 24...g5? (24...Rd4 25.ed4 Qd4 26.Rff2 Rc3–/+) 25.Rf1+/– Rd4 (better is 25...Kg7 26.Ne2 Rf8+–) 26.Rc2?? (better is 26.ed4 Qd4 27.Raf2 Rc3 28.Qe6+–) 26...Rd3+= 27.Be6 (better is 27.Rfc1 Ba3 28.Re1–/+) 27...Qc7?? (27...Rcc3 28.Rc3 Rc3 29.Qc3 Qe6–/+) 28.Bc8+– Qc8 29.Ne4!! Rb3 (29...Ne4 30.Rc8) 30.Rc8 Kg7 (30...Kg7 31.Nf6 Bf6 32.Rc7 Kg6+–). Weber,Krzysztof(+) – Wantoch_Rekowski,Jacek, corr 2AMM Poland, 1993.

7.a4 Be7 8.Ne2 0–0 9.Ng3 Be6 10.Be2 a6 11.Nc3 ab5 12.ab5 Ra1 13.Qa1 Nbd7 14.0–0 Nc5 15.f4 (15.Rd1 Bg4+=) 15...ef3 (better is 15...d4!? 16.ed4 Qd4 17.Rf2 Qd2–/+) 16.Bf3= (worse is 16.Rf3 d4 17.Nb1 d3+=) 16...b6 17.Be2 d4 18.Nd1? (18.Nb1 de3 19.de3 Qd5+=) 18...de3 (better is 18...d3 19.Bh5 Nb3–+ (19...Nh5?! 20.Nh5 Nb3 21.Qa7+=)) 19.de3+= Nb3 20.Qa4 Nc5 21.Qf4 Nd5 22.Qf3 Nb3 23.Qh5 Nd2 24.Re1 Nf6 25.Qe5 Nc4 (25...Bd6 26.Qd4 Nb3 27.Qh4+=) 26.Bc4= Bc4 27.Ne4 Re8 28.Ndf2 Bd5?? (28...Qd7 29.Rd1 Qb5 30.Qb5 Bb5 31.Bf6 gf6 32.Rb1=) 29.Qg5 (better is 29.Rd1!? Kh8 30.Qf4 Ne4 31.Ne4+/–) 29...Be4 30.Ne4 Qd2?? (better is 30...h6 31.Nf6 Bf6 32.Bf6 hg5 33.Bd8 Rd8=) 31.Rf1 (better is 31.Nd2 h6 32.Qg3+–) 31...Qb2–+ 32.Nf6 Bf6 33.Qg3 Qb5 34.h3?? Qb2 35.Kh1 Qc3 36.Rf3 b5 37.e4 Qc1 38.Kh2 Qg5 39.Qg5 Bg5 40.Rb3 Rb8 41.g3 Be7 Black plans b4 42.h4 b4 43.g4 f6 44.Kg3 Kf7 45.Kf4 Ke6 46.h5 g5 47.Ke3 Ke5 48.Kf3 Bc5 49.Rb2 Rd8 50.Rc2 (50.Rc2 Rd3 51.Ke2–+). avinoam – robitat (1810), internet, 2013.

7.Qc2 Be7 8.Ne2 0–0 9.Nd4 Bd6 10.Be2 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Be5 (13...Bd7 14.0–0=) 14.Ne6= Be6 15.Be5 Qc8 16.Nc3 Nbd7 17.Bd4 Qc7 18.0–0 Ne5 19.b6 Qb8 20.f3 ef3 21.Bf3 (21.gf3 Ned7+=) 21...Neg4 (21...Rc8 22.Be2+=) 22.g3+/– Rc8 23.Qb2 Qd6 (23...Ne5!?+/–) 24.Nb5+– Qd7 25.Nc7 Ne4 (25...Nh5!?+/–) 26.Bg7+– (worse is 26.Ne6 Qe6 27.Bg7 f6+/–) 26...Qe7 (26...Qd6 27.Bh8 (27.Ne6?! Qe6 28.Qd4 Rc2+/–) 27...f6 28.Be4 (28.Ne6?! Qe6 29.h3 Qe5 30.Qe5 Ne5 31.Be4 de4 32.Bf6 Nf3 33.Rf3 ef3+/–) 28...de4 29.Bf6+–) 27.Bh8 (27.Bg4!? Bg4 28.Nd5 Qe6+–) 27...Qg5 28.Ne6 (28.Bd4!? Nh2 29.Kh2 Qg3 30.Kh1 Ng5 31.Bd5 Qh4 32.Kg1 Bd5 33.Nd5 Qg3 34.Kh1 Qh3 35.Kg1 Qg3 36.Kh1 Qh3 37.Kg1 Qg3=) 28...fe6+/– 29.h4 Qg6 30.Be4 de4 31.Kg2 Rf8? (better is 31...Rd8+/–) 32.Rf8+– Kf8 33.Qa3 Kf7 34.Qa8 Qg8 (34...Qf5 35.Qb7 Ke8 36.Qc6 Ke7 37.Qc7 Ke8+–) 35.Qb7 Kg6 36.Qe4 Kh5 37.Qf4 Qh8 38.Qg5 1–0. DEFFM – GuestJTDX, freechess.org, 2017.

7.Nc3 a6 8.a4 a5 9.Qb3 b6 10.d4 Be7 11.Nge2 0–0 12.Ng3 h5 13.Be2 h4 14.Nf1 Bb4 15.Nd2 Re8 16.f4?? (better is 16.Rc1=) 16...ef3!–+ 17.Bf3 (17.Nf3 Re3 Discovered attack; 17.Bf3 Re3 Discovered attack; 17.gf3 Re3 Discovered attack) 17...Re3 18.Kf2 Rd3 19.Rad1 Bc3 20.Bc3 Bg4 21.Qc2 Bf5 22.Qc1 Ng4 23.Bg4 Bg4 24.Nf3 Rd1 25.Qd1 Nd7 26.Qd3 Nf6 27.Nd2 Bh5 28.Re1 Bg6 29.Qh3 Rc8 30.Bb2?? Rc2–+ 31.Bc1 Ne4 32.Ke2 Nc3 33.Kf2 Qf6 34.Kg1 Rc1! 35.Qc8 Kh7 36.Rc1 Ne2 37.Kh1 Nc1 38.Qc1 Qf4 39.Qc3 Qf2 (39...Qf2 40.h3 Qe1 41.Kh2 f6–+) 0–1. lousse (1665) – drdream (1715), internet, 2013.

7.Nc3 Bd6 8.Nge2 Nbd7 9.d4 (9.Nd4 0–0+=) 9...0–0 10.Qb3 Nb6 11.a4 Nc4 12.Nc1 (12.Nd5 Nd5 (worse is 12...Nb2 13.Nf6 Qf6 14.Qb2=) 13.Qc4 Be6–/+) 12...Be6 (12...Nb2 13.Qb2 Be6 14.Be2–/+) 13.Bc4 dc4 14.Qc2 Re8 (14...Rc8 15.Ba3–/+) 15.0–0 (15.Ba3 Bc7+=) 15...Bh2 (15...Rc8 16.N1e2+=) 16.Kh2 Ng4 17.Kg1 Qh4 18.Re1 Qh2 19.Kf1 Qh1 20.Ke2 Qg2 21.Rf1?? (better is 21.Kd1+=) 21...Ne3! 22.Ke3 Qf1 23.Ne4?? (23.Qe2 Qg2 24.Kd2–+) 23...Bd5 24.f3 f5 (24...Qh3!? 25.Qf2 Be4 26.Ra3–+) 25.Ne2 Qh3 (25...fe4 26.Rf1 ef3 27.Kf2 Re2 28.Qe2 fe2 29.Re1–+) 26.N2c3 (26.Kd2 fe4 (26...Be4?! 27.fe4 fe4 28.Qc4 Kh8 29.Qf7–/+) 27.fe4 Qh6 28.Kd1 Re4–+) 26...fe4 (26...Be4 27.Qf2 Qh6 28.f4 Bf3 29.Kd2 Qf4 30.Kc2 Re2 31.Qe2 Be2 32.Ne2 Qe4 33.Kd2 Qd3 34.Kc1–+) 27.Nd5 (27.Qf2–+) 27...ef3 28.Kf4 Rf8 0–1. Wantoch_Rekowski,Jacek – Szczesiak,Zenon, corr 2AMM Poland, 1994.

7.Nc3 Bd6 8.Nge2 Bg4 9.Qb3 (9.h3 Bc8+=) 9...Be6 (9...Nbd7 10.Nd5 Nc5 11.Bf6 Nb3 12.Bd8 Na1–/+) 10.Nd4= 0–0 (10...Nbd7 11.Ne6 fe6 12.Rc1+=) 11.Ne6 fe6 12.d4 Ng4 (better is 12...Nbd7!?+=) 13.Ne4+/– de4 14.Qe6 The passed pawn on d4 quickly leads to threats 14...Kh8 (better is 14...Rf7!? 15.Bc4 Bb4 16.Kd1 Qd7+=) 15.Qg4+/– Qa5 16.Kd1 Qa4 17.Kc1 Nd7 18.a3?? (18.Qd7 Rfc8) 18...Rac8–+ 19.Kb1 Rc2 (19...Qc2 20.Ka2 Rc3 21.Qg7 Kg7 22.d5 Ba3 23.Rb1 Qb3 24.Ka1 Bb2 25.Rb2 Rc1 26.Rb1 Qb1) 20.Ka2?? (20.Qe4 Rff2 21.Qe8 Nf8 22.Ra2 Ba3 23.Qf8 Rf8 24.Ra3 Rb2 25.Kb2 Rf2 26.Kc3 Qa3 27.Kc4 Qe3 28.Bd3–+) 20...Rc3! (20...Rc3 21.Bc3 Rf2 22.Be2 Qc2 23.Bb2 Re2 24.Qe2 Qe2–+) 0–1. Orlik,Adam – Hansson,M, corr, 1990.

7.Nc3 Be6 8.Nge2 Be7 9.Nd4 0–0 10.Be2 Nbd7 11.0–0 Nc5 12.Ne6 fe6 13.Rc1 Rc8 14.a3 b6 15.Na4 Bd6 16.Nc5 Bc5 17.Qa4 Qe7 18.Rc2 Bd6 19.Rfc1 Rc2 20.Rc2 h5 21.d3 (21.f4!?=) 21...ed3+= 22.Bd3 Ng4 23.g3 Qf7 24.f4 0–1. Fournier,Frederic (1790) – tal (1810), 3min+2s chess16.com, 2008.

7.Nc3 Be7 8.Nge2 0–0 9.Nf4 b6 10.Nfd5?? Nd5–+ 11.Nd5 Qd5 12.Qg4 Bg4 13.d4 ed3 (13...ed3 14.f3 d2 15.Kd1 Bf3 16.gf3 Qf3 17.Kd2 Qh1–+; 13...Bb4 14.Bc3 Bc3) 0–1. gtate (1710) – amikhlin (2045), net–chess.com, 2002.

7.d3 Bb4 8.Bc3 Bd6=+.

7.d3 Bd6 8.Nc3+=.

7.d3 Be7 8.de4= de4 (8...Ne4 A) 9.Bg7? Bb4 10.Nc3 Rg8–+ (worse is 10...Bc3 11.Bc3 Nc3 12.Qd4+/–; 10...Nc3?! 11.Qb3 Na2 12.Kd1 Bg4 13.f3=); B) 9.Nc3 Bb4 10.Qd4=) 9.Nc3 (9.Qd8 Bd8 10.Nd2 Nbd7=) 9...0–0 10.Qc2 Bb4 (10...Qa5 11.Nge2=) 11.Rd1 (11.a3 Ba5=) 11...Qa5 (11...Qe7 12.Bc4=) 12.a3 1–0. GuestPRNX – guestTYHU, freechess.org, 2016.

7.Bd4 Bd6 8.Nc3+=.

7.Bd4 Nbd7 8.Nc3 Bc5 9.Bc5 (better is 9.Nge2+=) 9...b6?? (better is 9...Nc5 10.Rc1 d4+=) 10.Bb4 (10.Bd6 Nc5 11.Be5 0–0+–) 10...a5 11.ba6! Ba6 12.Nb5 (12.Ba6!? Ra6 13.d4 Qb8+–) 12...Nc5 13.d4 (13.Qc2 Qe7+–) 13...ed3 14.Nd4 (14.a4 Bb5 15.ab5 Ra1 16.Qa1 0–0+–) 14...Qd7 (14...Bc4 15.Nh3+–) 15.Ngf3 0–0 16.h4 (16.a3 Nfe4+–) 16...Rfe8 17.Rb1 (17.h5 h6+–) 17...Bc4 18.a3 b5?? (better is 18...Ng4 19.Nh2 Nh2 20.Rh2 Qd6+/–) 19.Bc5+– Ne4 (19...Qg4 20.Ng5+–) 20.Bb4 1–0. vik – Pooshkin, internet, 2001.

7.Be2 Be6 8.d3 Bb4 9.Bc3 Qa5 10.Bb4 Qb4 11.Nd2 0–0 12.de4 de4 13.Nh3 Bh3 14.0–0?? (better is 14.gh3 Rd8 15.Rb1–/+) 14...Be6 15.a4 Nbd7 16.f3 ef3 17.Bf3 Rab8 18.Rb1 Qe7 19.Ne4 Ne4 20.Be4 Nf6 21.Rb2 (21.Qd4–+) 21...Ne4 22.Rc2 (22.Qd4 Nc5–+) 22…Rbc8 (23.Rc8 Rc8–+; better is 22...Bb3 23.Qd3 Bc2 24.Qc2–+) 0–1. valpa – Sonea, playchess.de, 2004.

7.Ne2 a6 8.Nf4 ab5 9.Bb5 Bd7 10.Nc3 Bb5 11.Nb5 Bd6 12.Nd6 Qd6 13.Bf6 gf6 14.0–0 Nc6 15.Qb3 Rb8 16.Qd5+– Qd5 17.Nd5 f5 18.Nc7 Kd7+/– 19.Nd5 Ke6 20.Nb6 Rbd8 21.Nc4 b5= 22.Na3 Rd5 23.Nc2 Rd2=+ 24.Rfd1?? Rc2–+ 25.Rac1 Rc1 26.Rc1 Nb4 27.a3 Nd3 28.Rc6 Kd5 29.Rb6 Rc8 30.Rb5 Rc5 31.Rc5 Kc5 32.h4 f4 33.a4 fe3 34.fe3 f5 35.g3 Kb4 36.a5 Ka5 37.Kg2 Kb5 38.g4 fg4 39.Kg3 h5 40.Kg2 Kc4 41.Kg3 Kc3 42.Kg2 Kd2 43.Kg3 Ke3 44.Kg2 Kf4 45.Kg1 e3 46.Kg2 e2 47.Kg1 e1Q 48.Kg2 Qh4 49.Kg1 Ne1 50.Kf1 Qh2 51.Ke1 g3 52.Kf1 g2 53.Kf2 g1Q 0–1. gtate (1715) – cwhite (1755), net–chess.com, 2002.

7.Ne2 Bd6 8.d3+=.

7.Ne2 Nbd7 8.Nf4 Nc5 (8...Bd6 9.d3+=) 9.Be2 (9.Bf6 gf6 10.Qh5 Ne6 11.Qd5 Nf4 12.Qd8 Kd8 13.ef4 Bf5+=) 9...Be7 (9...Bd6 10.0–0+=) 10.0–0= 0–0 11.d4 (11.Bd4 Ne6 12.Ne6 fe6=) 11...Ne6+= 12.Ne6 Be6 13.Nd2 (13.Ba3 Ba3 14.Na3 Qd6=) 13...Qd7 (13...a6 14.ba6 ba6 15.Rc1+=) 14.Qb3 a5 15.ba6 (15.Ba3 a4 16.Qb2 Rfc8=) 15...ba6+= 16.a4 (16.Rab1 Rab8 17.Qd1 Qc6+=) 16...Rab8 (16...Rfb8 17.Qc2+=) 17.Qa2 Bb4 (17...Rb4 18.Bc3 Rb6 19.Rab1+=) 18.Nb3 Qd6 (18...a5 19.Rfc1+=) 19.Rfc1 (19.Ba3 Bg4 20.Bb4 Rb4=) 19...Rfc8 (19...Ng4 20.Bg4 Bg4 21.Bc3+=) 20.Rc8= Bc8 21.Rc1 (21.Ba3 Ba3 22.Qa3 Qa3 23.Ra3 Bd7=) 21...Bg4+= 22.Bf1 Bf3?? (22...Be6 23.Nc5 Ng4 24.g3=) 23.Nc5?? (23.gf3 ef3 24.Nd2 Bd2 25.Ba3+=) 23...Ng4–+ The mate threat is Qxh2 24.g3 Qh6 Threatening mate... how? (24...Qh6 25.h4 Bd2–+) 0–1. Eberl,Hans Christian – Herzig,Walter, corr DDR, 1984.

7.Ne2 Be7 8.Nd4 0–0 9.Nc3 Nbd7 10.f4 Nc5 11.Na4 Bg4 12.Qc2 Rc8 13.Nc5 Rc5 (13...Qb6 14.Ndb3 Bc5 15.Nc5 Rc5 16.Qa4=) 14.Qb3 (14.Qa4 Nh5 15.Kf2 Qb8=) 14...Nh5–/+ 15.Be2 Be2 16.Ne2 Qd7 17.a4 Rfc8 18.0–0 Rc2?? (better is 18...Rc4 19.Nd4 Bc5+=) 19.Bc3+/– R2c3 20.Nc3 Nf6 21.Ne2 Bc5 22.Rac1 b6 23.Nd4 Re8 24.Qc3 h5 25.Nb3 Bd6 26.Qc6 Qe7 27.Qc2 g6 28.Qb1 Ng4 29.Rc6 g5? (better is 29...Rd8+–) 30.h3 gf4 31.Rd6 (better is 31.hg4 f3 32.d4+– (32.gh5?! Bg3 33.Nd4 f2 34.Rf2 Qh4+–)) 31...Qd6 32.hg4 f3 33.Qe1 hg4 34.Qh4 Re6 35.Rc1 (35.Nd4 Rh6 36.Qg4 Kh8 37.Nf3 ef3 38.Rf3 Rg6+–) 35...Rh6 36.Qg5 (36.Qg4 Rg6 37.Qh3 Rh6+–) 36...Rg6 (36...Kh7 37.Qf5 Kg7 38.Qg4 Rg6+/–) 37.Rc8 Kg7 38.Qh5 Rh6 39.Rc6?? (39.Qg4 Rg6 40.Qh3+–) 39...Rh5 (better is 39...Qc6 40.Qg4 Qg6 41.gf3 Qg4 42.fg4 Rg6–+) 40.Rd6–/+ g3 41.gf3 ef3 42.Rd5 0–1. Fischbach,Rainer (1670) – Naumann,Peter (1960), Leipzig VfB op, 2006.

7.Ne2 Bg4 8.Qb3 (8.h3 Bh5=) 8...Nbd7+= 9.Nd4 Nc5 10.Qc2 Rc8 11.Nc3 Be7 12.f3 ef3 (12...Bh5 13.Rc1+=) 13.gf3= Bh5 14.Bh3 Ncd7 (14...Bg6 15.Bf5=) 15.Rg1 (15.0–0 0–0=) 15...0–0 (15...Bg6 16.Qd1=) 16.Kf2 (16.Nf5 Kh8=) 16...Bc5+= 17.Qa4 (17.Nf5 Bg6 18.d4 Bb4=) 17...Nb6= 18.Qc2 (18.Qb3 Bd4 19.Bc8 Qc8 20.ed4 Qh3–/+) 18...Bg6 (18...Bd4 19.Bc8 Qc8 20.ed4 Qh3–/+) 19.Bf5? (better is 19.Rg6 fg6 20.Ne6+=) 19...Bd4–+ 20.Bg6? (better is 20.ed4 Qd6 21.Kg2–+) 0–1. Gross,Wilhelm – Merten,Rainer, xv/21, 1988.

7.f3 Bd6 8.fe4 (better is 8.Nc3+=) 8...0–0?? (better is 8...de4!? 9.Nc3 0–0–/+) 9.ed5?? (better is 9.e5 Bg4 10.Nf3 Be5 11.Be5+–) 9...Nd5+= 10.Nc3 (10.Nf3!?+=) 10...Qh4= 11.g3?? (better is 11.Ke2=) 11...Bg3–+ 12.hg3?? (12.Ke2 Qg4 13.Nf3 Qc4 14.d3 Qc3 15.Qc1 Qc1 16.Rc1–+) 12...Qg3 (12...Qg3 13.Ke2 Nf4 14.ef4 Re8 15.Ne4 Re4; 12...Qh1?! 13.Qf3 Qf3 14.Nf3–/+). 0–1. GuestYRDG – GuestXXMT, freechess.org, 2017.

5.c4 Bd7

6.a4 a6 7.Be2 c6 8.bc6 Bc6 9.cd5 Bd5 10.d3 (10.Nc3 Bc6=+) 10...Qb6 (10...ed3 11.Bf3 Bb4 12.Bc3 Bf3 13.Nf3–/+) 11.Qc2 Bb4 12.Bc3? (12.Kf1 0–0–/+) 12...Nbd7?? (better is 12...ed3 13.Qd2 Bc3 14.Nc3 Bg2–+ (14...de2?! 15.Nd5 Nd5 16.Qd5=+)) 13.Bb4 Qb4 14.Qc3 Qc3 15.Nc3 Bc6 16.de4 Ne4 17.Ne4 Be4 18.Bf3 Bf3 19.Nf3 0–0 20.0–0 Rac8 21.Rfd1 Rc7 22.g3 f6 23.Kg2 g5 24.Nd4 Nc5 25.Rac1 Rfc8 26.Ne6?? Ne6–+ 27.Rc7 Nc7 28.Rc1 Kf8 29.Kf3 Ke8 30.Ke4 Kd7 31.f4 h6 32.Kf5 Nd5 33.Rd1–/+ Kd6 34.e4 Rc5 35.fg5 fg5 36.Kg6 Rc4 37.ed5 Ra4 38.Kh6 g4 39.Kg5 Ke5?? 40.d6+– 1–0. valpa – taliesin, playchess.de, 2004.

6.a4 Bb4 7.Qb3 (7.cd5 Bf5 (7...0–0 8.Qb3 Qe7 9.Ra2 Bd6 10.d3 Bf5+=; 7...Bg4 8.Qb3 Bd6 9.d3 0–0 10.Nd2 Bf5+=) 8.Qb3 Bd6 9.d3 0–0 10.Nd2 Nbd7+=) 7...a5 (7...Be7 8.cd5 Bf5 9.Bc4 Nbd7 10.Ne2 Nc5+=) 8.ba6 (8.cd5 0–0 9.Nc3 Bg4 10.f3 ef3+=) 8...Na6 9.cd5 Ba5 (9...Bd6 10.Qb7 Nb4=) 10.Ba6 ba6 11.Ne2 Rb8 12.Bf6 Rb3 (12...gf6? 13.Qc4+–) 13.Bd8 (13.Bd8 Kd8 14.Nbc3+=). Trkn – Judith Pickering, itsyourturn.com, 2000.

6.Nc3 Bf5=.

6.cd5 Nd5 7.Qc2 (7.Nc3 Nc3 8.Bc3 Bf5=) 7...f5 (7...Bf5 8.Nc3 Nb4 9.Qb1 Nd3 10.Bd3 ed3 11.Nf3=) 8.Be2 (8.Qb3 Be6=) 8...h5 (8...Be6 9.Bh5 Kd7 10.Be2+=) 9.Qd1 (9.Nc3 Nb4 10.Qb1 Be6=) 9...Qg5+= 10.g3 (10.Bf1 Nb4 11.g3 a6+=) 10...Rh7 (10...c6!?+=) 11.Nh3 Qg6 12.Nc3 Nf6 (12...Nc3 13.dc3 Bd6 14.Nf4 Bf4 15.Qd5+= (15.gf4?! Be6=; worse is 15.ef4 Be6=)) 13.Nf4 Qf7 14.a3 (14.d3 Bb4 15.de4 fe4+=) 14...g6 (14...h4 15.Qa4=) 15.d3 Bd6 (15...Bg7!?+=) 16.de4+/– fe4 (16...Bf4 17.ef4 fe4 18.Qd4+/–) 17.Ncd5 Bf4?? (better is 17...Ng8+/–) 18.Nf6+– (18.Nf6 Ke7 19.Nh7 Be3 20.Bf6 Ke8 21.fe3 Qh7 22.Qd4+–; 18.Nf4?! Be6+/–; 18.Bf6?! Be6 19.gf4 Bd5+/–) 1–0. GuestWNJC – ajjebo, freechess.org, 2017.

5.c4 Nbd7

6.Qc2 Nc5 7.Bd4 Ne6 (7...Be6 8.cd5 Qd5 9.Nc3+=) 8.Ne2 (8.Bf6 Qf6 (worse is 8...gf6 9.cd5 Qd5 10.Nc3+/–) 9.Nc3 Nc5 10.cd5 Bf5+=) 8...Be7 (8...dc4 9.Qc4 Nd4 10.Nd4+=) 9.Nbc3= c6 10.bc6 bc6 11.Be5 (11.cd5 cd5 12.Nf4 Nf4 13.Bb5 Bd7 14.ef4 Bb5 15.Nb5 0–0+=) 11...Ng4 (11...0–0 12.Nd4 Nd4 13.Bd4=) 12.Bg3= 0–0 13.Rb1 Bd6 (13...h6 14.f3 ef3 15.gf3+=) 14.cd5 cd5 15.Rb5 Bg3 (15...Nc5 16.Nd4 a6 17.Rb1=) 16.hg3 Nf6 (16...Bd7 17.Rd5 Nf6 18.Re5=) 17.Rd5 (17.Nd5 Nd5 18.Qe4 Nf6 19.Qa8 Nc7–/+) 17...Nd5= 18.Qe4 h6 19.Qd5 (19.Nd5 Ba6=) 19...Qd5 (19...Rb8 20.Qd8 Rd8 21.d4=) 20.Nd5 Rd8 (20...Bd7 21.Nec3=) 21.Nec3 Kf8 22.Nb4 (22.Bc4 Rb8=) 22...Bd7 (22...Bb7 23.Rh5=) 23.Rh5 a5 24.Nc2 f6 25.Bb5 Bb5 26.Rb5 Rdb8 27.Rd5 Rd8 28.Rf5 (28.Rb5 Rdb8=) 28...Rdc8 (28...Kf7 29.d4=) 29.g4 (29.Ke2 Kf7=) 29...Nc5 (29...Kf7 30.Na3=) 30.Nd4 Nd3 31.Ke2 Nc1 (31...Ne5 32.f3=) 32.Kf3+= a4 (32...Nd3 33.Rd5+=) 33.Rh5 (33.Rd5 Ra6+=) 33...Nd3 (33...Kf7 34.Ndb5 Kg6 35.d4=) 34.Ke2 ½–½. forsetinn (2465) – ipox (2425), gameknot.com, 2016.

6.Qc2 Bd6 7.cd5 0–0 8.Nc3 Nc5 9.Na4 Na4 10.Qa4 Re8 11.Bc4 a6 12.ba6 Bd7 13.Qb3 ba6 14.Ne2 Rb8 15.Qc2 Ng4 16.h3 Qh4 17.Rf1 Ne5 18.Be5 Be5 19.Rb1 a5 20.Rb8 Rb8 21.Nc3 Bc3 22.dc3 (worse is 22.Qc3 Rb1 23.Ke2 Bg4 24.f3 ef3 25.gf3 Rf1 26.hg4 Qe1 27.Kd3 Rf3–/+) 22...g6 23.Ke2 Qg5 24.Rb1 ½–½. forsetinn (2315) – wilfried (2330), gameknot.com, 2015.

6.Nc3 Nc5 7.Qc2 d4?? (better is 7...dc4 8.Bc4 Be6 9.Be6 fe6–/+) 8.ed4+/– Qd4?? (better is 8...Ne6 9.Nge2 Be7+/–) 9.Na4 (better is 9.Nd5 Nd5 10.Bd4+–) 9...Nd3 (9...Qd8 10.Nc5 Bc5 11.Rd1+=) 10.Bd3 Qd3 11.Qd3 ed3 12.Bf6 gf6 13.Nb2 Bf5 14.Nd1 0–0–0 15.Ne3 Be4 16.f3 Bg6 17.h4 h5 18.Nh3 Bc5 19.0–0–0 Rd4 20.g3 Bd6 21.Rhg1 Re8 22.Kb2 Re3 (22...a6!? 23.ba6 ba6+=) 23.de3+= Rc4 24.Nf4 Rb4 (24...Be5!? 25.Kb3 Rc3 26.Kb4 a5 27.ba6 ba6=) 25.Kc3+/– Bf5 (25...Rb5 26.Nd3 Rf5 27.g4 Rf3 28.gh5 Bh5 29.Rg8 Kd7 30.Rh8=) 26.e4 Bd7 27.Rd3 (27.Kd3?! Bb5 28.Kd2 Rb2 29.Kc1 Ba3=; 27.Nd3?! Rb5 28.g4 Be6+/–; 27.Nh5 Bb5 28.Nf4 Rc4 29.Kd3 Rc6 30.Ke3 Bc5 31.Rd4 Bd4 32.Kd4 Rc4 33.Ke3 Rc3 34.Kf2 f5=) 27...Bb5 28.Rd6 (28.Nh5?! Bd3 29.Kd3 Ra4=) 28...Rc4 (28...cd6 29.Kb4 Remove defender) 29.Kd2 cd6 30.Nh5 Ra4 31.Nf6 1–0. Novikov,Konstantin I (2225) – Smolskiy,Mikhail (2075), Rassadnev mem, 2006.

6.d3 Bb4 7.Bc3 Qe7 8.cd5 Nd5 9.Bb4 Qb4 10.Nd2 ed3 11.Bd3 =+.

6.cd5 Nc5 7.Bc4 Nd3 (better is 7...Nd5!? 8.Bd4 Be6–/+) 8.Bd3= ed3 9.Bf6 Qf6 10.Nc3 Bb4 11.Qb3 Bc5 12.Nf3 Bg4 13.Qd1 0–0–0 14.Ne4 Qe7 15.Nc5 Qc5 16.Qa4 Bf3 17.gf3 Qd5 (17...Rd5?! 18.Qg4 f5 19.Qg7=) 18.e4 Rhe8 19.Kd1? (better is 19.Rc1–/+) 19...Qe5 20.Rc1 (20.Rb1 Qh5 21.Kc1 Qc5 22.Kd1 Qf2 23.Kc1–+) 20...Qh5 21.Rf1 (21.Rc7 Kc7 22.Kc1–+) 21…Qf3 0–1. valpa – tako, playchess.de, 2003.

6.f3 Nc5 7.d4 ed3 8.Bd3 Be6 9.cd5 Nd5 10.Bd4 Ne3 11.Be3 Nd3 12.Ke2 Bc4 0–1. CountFromHolland – ETC_Chess, playchess.de, 2002.

6.Nh3 dc4 7.Bc4 Nb6 8.Bb3 Bh3 9.gh3 Be7 10.Nc3 (10.Rg1 0–0+=) 10...Qd7–/+ 11.Rg1 0–0–0 (11...Rg8!?–/+) 12.Qc2= g6 13.0–0–0 Rhf8 (13...Qf5 14.f3 Qf3 15.Rdf1+=) 14.Ne4= Nfd5 15.d4 (15.Bd5 Nd5 16.Qa4 Nb4=) 15...Qb5+= 16.Kb1 f5 17.Nc5 Rf6 18.Qd3 Qd3 19.Nd3 c6 20.h4 Rff8 (20...Rfd6 21.h5 g5 22.Ne5=) 21.a4 (21.h5!? g5 22.a4=) 21...Bh4+= 22.a5 Na8 23.a6 Nac7 (23...ba6 24.Rc1+=) 24.ab7 Kb7 25.Rc1 Be7 26.Ne5 Attacks the isolani on c6 26...Rf6 27.h4 (27.Ba4 Nb4=) 27...a5 28.h5 gh5 29.Rg7 h6 (29...Re6 30.Rh7 h4 31.Bc2=) 30.Ba4= The pressure on the isolated pawn grows 30...Nb5 31.Rc5 (better is 31.Bb3 Nbc7 32.Ba4=) 31...h4 (31...Ka6!? 32.Rd5 cd5 33.Re7 Nd6+=) 32.Rd5 Rd5 (32...cd5 33.Re7 Remove defender; 32...Rd5 33.Re7 Remove defender) 33.Re7+/– Ka6 34.Rg7 (34.Bb3 Rdd6 35.Nd3 a4 36.Nc5 Ka5 37.Na4 f4+/–) 34...Rd8 (34...h3 35.Rg3+/–) 35.Nd3+/– Kb6 36.Rg1 (36.Nc5 Nd6 37.Ba3 h3+=) 36...h5 37.Ne5 Ka6 (37...f4 38.Rh1+=) 38.Rh1 Rg8 (38...f4 39.Rh4 fe3 40.fe3+/–) 39.Rh4 Rh6 (39...Rg1 40.Ka2 Rh6 41.Bc2+/–) 40.Bc2 Rg1 41.Ka2 Rg2 (41...Nd6 42.Bd3 Kb7 43.Kb3+/–) 42.Nd3 (42.Bf5 Rf2 43.Bg4 a4+/–) 42...Nc7 (better is 42...Rg4!? 43.Rh2 Nd6+–) 43.Bd1+– Nd5 44.Bf3 (44.Bh5 Rg5–/+) 44...Rg1 45.Kb3 (worse is 45.Bh5 Rg5–/+) 45...Kb5 46.Be2 Kb6 (46...a4 47.Ka3+–) 47.Ka4 (47.Rh5!? Rh5 48.Bh5 Rg2+–) 47...Rg5+/– 48.Bf3 Rh7 49.Ne5 Rg1 50.Rh5 (50.Bh5 Rg5 51.Nc6 A) 51...Kc6? 52.Be8 Rd7 53.Rh7 (53.Bd7?! Kd7 54.Rh3 f4+–) 53...Nb6 54.Ka5+–; B) 51...Rgh5 52.Rh5 Rh5 53.Na5 Rh2 54.Nc4 Kc7–/+) 50...Rh5 51.Bh5 Rg2 52.Nd3 Nb4 53.Nb4 ab4 0–1. Lifshitz,Samuel (1685) – Correa De Almeida,Claudio (1640), SC–2011–0–00110, 2011.

6.d3 dc4

7.dc4 a6 8.Ne2 ab5 9.cb5 Bb4 10.Bc3 Qe7 11.Ng3 0–0 12.Be2 Nb6 13.Bb4 Qb4 14.Qd2 Nfd5 15.0–0 f5 16.Qb4 Nb4 17.Rc1 Be6 18.a3 Rf7 19.Nd2 Na2 20.Rc5 Rd7 21.Nb1 g6 22.f3 ef3 23.Bf3 Nb4 24.Rc1 Ra7 25.Nd2 Na2 26.Rc2 Ra3 27.Ngf1 Ra7 28.e4 Kf7 29.ef5 gf5 30.Rb2 Nc8 31.Ne3 Nc3 32.Ra7 Na7 33.b6 cb6 34.Ndc4 Kf6 35.Rb6 Nc8 36.Rb7 Rb7 37.Bb7 f4 38.Nf1 Bc4 39.Bc8 h5 40.g3 ½–½. MrkT – KlingonDon, internet, 2005.

7.dc4 Bb4 8.Bc3 Qe7 9.Ne2 Ne5 10.Nd4 0–0 11.Bb4 Qb4 12.Nd2 Rd8 13.Be2 c5 14.bc6 Nc6 15.Nc6 bc6 16.Rb1 Qc3 17.Rc1 Qa5 18.Qc2 Rb8 19.Rd1 Qg5 20.Nb3 Be6 21.g3 Bh3 22.Rd4 c5 23.Rd8 Rd8 24.Bf1 Bf1 25.Rf1 Qe5 26.h3 Rd3 27.Nd2 Rc3 28.Qb1 h6 29.g4 Ra3 30.Ke2 g5 31.Qa1=+ Qa1 32.Ra1= ½–½. Benassi,Aspasio – Vetter,Udo, SEV, 2000.

7.dc4 Bd6 8.Nc3 Nc5 (8...0–0 9.Qc2+=) 9.Qd4 a6 10.Nh3 (10.Nd5!?+=) 10...Bh3–/+ 11.gh3 Ne6 12.Qd2 0–0 13.Be2 Qe7 (13...ab5 14.Nb5 Ra6 15.Rg1–/+) 14.Nd5 Nd5 15.Qd5 ab5 16.cb5 Rfd8 (16...Ba3!? 17.Ba3 Qa3+=) 17.Qe4= Bb4 (17...Ba3 18.Ba3 Ra3 19.0–0 (19.Qb7 Nc5 20.Qc6 Re3 21.fe3 Qh4 22.Kf1 Ne4 23.Qe4 Qe4–+) 19...Qg5 20.Qg4=) 18.Kf1 Rd2 19.Bc1 (19.Qb7 Rad8 20.Bc1 Rc2=) 19...Re2 (better is 19...Raa2!? 20.Ra2 Ra2+=) 20.Ke2+= Bc3 21.Bd2 (better is 21.Qb7!? Re8 22.Bd2 Nf4 23.Kf3+=) 21...Ba1 (21...Nd4 22.Kd3 Qe4 23.Ke4 f5 24.Kd3 Ba1 25.ed4 Ra3 26.Kc4 Ra2 27.Be3+=) 22.Ra1 Rd8 23.Bb4 (worse is 23.Qb7 Nf4 24.Kf3 Qf6–+) 23...Qe8 24.Ke1 (24.Qb7 Rb8 25.Qa6 Nd4 26.Kd3 Nb5 27.a3–/+) 24...Qb5–/+ 25.a4 Qb6 (25...Qg5 26.Bc3 b6 27.Kf1–/+) 26.Rb1 Qa6 27.Be7 Re8 (27...Rb8!?–/+) 28.Rb7= Nf8 29.Rb3 h6 30.Qb4 Ng6 31.Bc5 Ne5 32.Qb5 Qe6 33.f4 c6 34.Qb4 Nf3 (34...Nd7 35.Bb6–/+) 35.Kf2 Qd5 (worse is 35...Qh3 36.e4 Qh2 37.Kf3 Qh1 38.Kg3 Re4 39.Qa5+=; 35...Nh2 36.Kg2 Nf3 37.Kf3 Qh3 38.Ke2 Qg2 39.Ke1 Qg1 40.Kd2 Qf2 41.Kc1 Qf1 42.Kb2 Qe2 43.Ka1+–) 36.Bb6 (36.Ra3 Nh2 37.Kg1 Nf3 38.Kf2 Nh4–+) 36...Nd2 (36...Nh4 37.Ke2–/+) 37.Rb2 Qf3 38.Ke1 Ne4 39.Qc4 c5 40.Qd3 (better is 40.Qe2 Qh3 41.Qd3–+) 40...Nf2!–+ (40...Qh3?! 41.Ba7–/+) 41.Rf2 (41.Rf2 Qe3 Double attack (41...Re3 Decoy)) 41...Re3 (41...Re3 42.Qe2 Re2 43.Re2 Qc3 44.Kf2 Qd4 45.Kg3 Qg1 46.Kf3 Qf1 47.Ke3 Qh3 48.Kd2 Qd7 49.Ke1 Qa4–+) 0–1. Trokenheim,Marek (1825) – Vasquez,Fernando (1930), FICGS, 2017.

7.dc4 Bd6 8.Be2 Nc5 9.Nc3 0–0 (9...Bg4 10.f3 Bf5 11.Qd2 0–0–/+) 10.Nd5 (10.Qd4 c6 11.Qd2 Qc7–/+) 10...Nd5 11.Qd5 (11.cd5 Qg5–/+) 11...Be6 12.Qd4 Qg5 13.0–0–0 Qh6 14.Nh3 b6 15.Nf4 Bf4 16.ef4 a6 17.g4 Qf4 18.Kb1 f6 19.ba6 (19.Bc1!? Qe5 20.ba6–+) 19...Bg4 (19...Na6?! 20.Bc1 Qe5 21.Ba3–/+) 20.Bg4 Qg4 21.Ba3 Ne6 22.Qe3 Rfe8 23.Rhg1 Qg1?? (better is 23...Qh4–+) 24.Rg1+– 1–0. Bonetti,Shane – Wrede,Christian, TT–11 ETC, 2003.

7.de4 Ne4 8.Bc4 Bb4 9.Kf1 Qh4 =+.

6.cd5 Nd5

7.a3 Nc5 8.Nc3 Nc3 9.Bc3 Be6 10.Bb4 Qf6 11.Bc5 Bc5 12.Qc1 Bd6 13.Ne2 0–0 14.Nc3 Qg6 15.Rb1 f5 16.g3 Rad8 17.Bg2 Be5 18.Rb4 Rd7 (18...Qh5 19.Ne2–/+) 19.0–0 (19.f3 Bd6–+) 19...Rfd8 20.Nb1 (20.d4 ed3 21.Qd2 c5 22.bc6 bc6–/+) 20...Bd5 21.Nc3 c5 22.Rb1 Bf7 23.Rd1 Qf6 24.Ne4 (24.Na4 b6 25.f4 ef3 26.Bf3–+) 24...fe4 25.Be4 Ba2 26.Qc5 Bb1 (26...Rd2?! 27.Rd2 Rd2 28.Rf1–+) 27.Bb1 Rd2 28.Rf1 (28.Rd2 Rd2 29.Qc8 Rd8 30.Ba2 Kh8 31.Qb7 Bd6–+) 28...b6 29.Qc4 Kh8 30.Qe4 g6 31.Bc2 Bd6 32.Qc6 (32.Bb3–+) 32...Rf8 33.f4 Bc5 34.Qe4 (34.Be4–+) 34...Qc3 35.Bb1 (35.Rc1–+) 35...Be3 36.Kh1 Qb2 37.Qe5 (37.Qc2 Rc2 38.Bc2 Qb5 39.Rf3 Qe2 40.Bd1 Qd1 41.Kg2 Qe2 42.Rf2 Qf2 43.Kh3 Qf3 44.f5 Rf5 45.a4 Rh5) 37...Qe5 38.Re1 (38.Rf3 Rd1 39.Kg2 Rg1 40.Kh3 Qh5) 38...Qd5 39.Be4 Qe4 0–1. RVJ1943 – marekt, ChessWorld.net, 2003.

7.a4 Nb4 8.Bc3 –/+.

7.a4 Bd6 8.Bc4 (8.Bg7!? Rg8 9.Bd4=) 8...N7f6 9.Ne2 Nb4 10.0–0 0–0 11.Qb3 Nd3 (11...Ng4 12.f4=+) 12.Nec3 (better is 12.Bd3 ed3 13.Nd4+=) 12...Bh2! 13.Kh2 (better is 13.Kh1 Be5 14.Ba3–+) 13...Ng4 14.Kg3 Qd6 15.f4 ef3 16.Kf3 Nge5 17.Ke2 Bg4 18.Rf3 Qf6 19.Kd1 (19.Bd5 Qh4 20.Na3 Qf2 21.Kd1 Qg2 22.Kc2 Bf3 23.e4–+) 19...Bf3 (19...Nf3?! 20.gf3 Bf3 21.Kc2 Nb2 22.Qb2–/+) 20.gf3 Nc4 (< 20...Nb2 21.Qb2 Nc4 22.Qb3 Qf3 23.Ke1 Qh1 24.Ke2 Qg2 25.Ke1–+) 21.Ke2 (21.Ba3 Qf3 22.Kc2 Ne1 23.Kc1–+) 21...Ncb2 22.Qc2 Qe5 (23.Qb2 Nb2–+) 0–1. valpa – tako, playchess.de, 2003.

7.Qc2 Nc5 8.Nc3? (8.a3 Bf5+=) 8...Nf6?? (better is 8...Nb4 9.Qb1 Ncd3 10.Bd3 Qd3–+ (10...Nd3?! 11.Kf1–+)) 9.Bc4 Nd3 (9...Be6 10.Be6 fe6 11.Nh3+=) 10.Bd3+= Qd3 11.Qd3 ed3 12.Nf3 Bf5 13.Nh4 Be6 14.0–0 Bc4 (14...a6 15.Nf3+=) 15.Nf5 0–0–0 16.a4 Nd5 (16...Be6 17.Nd4=) 17.Nd5 (17.Ne4 Nb4 18.Bg7 Bg7 19.Ng7 Nc2+/–) 17...Bd5= 18.f3 (18.Bg7? Bg7 19.Ng7 Rhg8–+; 18.Ng7? Rg8–+) 18...Bb4 (18...Rg8!?=) 19.Bg7 Rhg8 20.Bc3 Bc3 21.Ne7 (21.dc3 Rd7+=) 21...Kb8 22.Ng8?? (better is 22.dc3 Rg5 23.Nd5 Rgd5 24.Rfd1+=) 22...Rg8?? (better is 22...Ba1 23.Ra1 Rg8–+) 23.dc3+– d2? (23...c5 24.Rad1 c4 25.e4+–) 24.Rfd1 (better is 24.Rf2!? f5+–) 24...Bf3 25.Rd2 Be4 26.Rad1 b6 (26...c6 27.c4+–) 27.Rd8 Rd8 28.Rd8 Kb7 29.Kf2 Bc2 30.Rd7 (better is 30.Rd4!? Bb3+–) 30...Ba4 31.Rf7 Bb5 32.Rh7 a5 33.g4 a4 34.Kg3?? (better is 34.Rh3+–) 34...a3–+ 35.Re7?? (35.c4 Be8 36.Re7–+) 35...a2 0–1. DEFFM – GuestWTCQ, freechess.org, 2017.

7.Bc4 N5b6 (7...Nc5 8.a3 Nb6–/+) 8.Qc2 (8.Bf1 Nc5+=) 8...Nc5 (8...Nc4!? 9.Qe4 Nce5–+) 9.Be2 (9.Bd4 Qg5 (9...Nc4?! 10.Bc5 Qd3 11.Qd3 ed3 12.Bf8 Rf8 13.Nc3–/+) 10.Bf1 Nd3 11.Bd3 ed3–+) 9...Bf5 10.a4 (10.Bd4 Nd3 11.Kf1 Nd5–/+) 10...Nd3 (10...Nd5 11.Ba3 Qg5 12.g4 Nd3 13.Bd3 ed3 14.Qc4 Bg4 15.Bf8 Rf8 16.Qd3–+) 11.Bd3+= ed3 12.Qb3 (12.Qc3 Qd5 13.f3 Be6+=) 12...Be6 (12...Qg5 13.g3–/+) 13.Qc3 Nc4 (13...Qg5 14.Kf1–/+) 14.Nf3 f6 (14...Bd5!?–/+) 15.Nd4= Bd5 (15...Qd5 16.0–0 Nb2 17.Qb2=) 16.0–0 Bd6 (16...Nb2!? 17.Qb2 c5 18.bc6 Bc6+=) 17.Ba3+= Na3 18.Na3 Be4 19.f3 Bg6 20.e4?? (better is 20.a5=) 20...Be5–+ (20...Be5 21.Ne6 Bc3 22.Nd8 Ba1 (22...Kd8?! 23.dc3 Ke7 24.Rfd1=; 22...Rd8?! 23.dc3 f5 24.Rad1+=) 23.Nb7 Bb2–+) 0–1. GuestLLPH – GuestKGQJ, freechess.org, 2016.

7.d3 Bb4 8.Nd2 N7f6+=.

7.d3 ed3 8.Bd3 Nc5 9.Bd4 Nb4 10.Bc4 Bf5 11.Na3 Nbd3 12.Kf1 Nf2 –/+.

5.c4 Be6

6.Qb3 Bc5 7.Nc3 d4 8.Na4 Qd6 (better is 8...de3 9.de3 Nbd7+=) 9.Nc5+/– Qc5 10.ed4 Qf5 (10...Qd6!?+/–) 11.d5+– Ng4? (better is 11...Bc8+–) 12.Qg3 Bc8 13.h3 (13.Bg7?! Rg8 14.Bd4 Kd7+–) 13...Nf2 14.Qf2 Qf2 15.Kf2 0–0 16.Ne2 (16.Be5 c6+–) 16...Nd7 17.Ng3 Nc5 (17...f5 18.Bd4+–) 18.Bd4 (better is 18.Ba3!? b6 19.Bc5 bc5 20.Ne4 a6+–) 18...Nd3 19.Bd3 ed3 20.Ke3 Re8 21.Kd3 a6 22.a4 ab5 (22...Bd7 23.b6 c6 24.d6+–) 23.ab5 Ra1 24.Ra1 b6 (24...f6 25.b6 cb6 26.Bb6+–) 25.Nh5 (better is 25.Ra7 h5 26.Nh5 Bf5 27.Kc3 Be4+–) 25...f6 26.Ra7 Bf5 27.Kc3 Kf7 (27...Bg6 28.Nf4 Rc8 29.Ne6+–) 28.Rc7 Re7 29.d6 Rd7 30.Bb6 g6 31.Ng3 Be6 32.d4 Ke8 33.d5 (better is 33.Ne4!? Kf7+–) 33...Bd5 34.Rd7 Kd7 35.cd5 Kd6 36.Kd4 f5 37.Bc5 Kd7 38.b6 h5 39.d6 Kc6 40.Ne2 g5 41.Nc3 g4 42.hg4 fg4 43.Ne4 h4 44.Ke3 h3+– 45.gh3 gh3 46.Kf2 h2 47.Kg2 (47.Kg2 h1N 48.Kh1+–) 1–0. jura1946 – karola912, internet, 2013.

6.Qb3 Bd6 7.a4 (better is 7.cd5!? Nd5 8.Bg7=) 7...Nbd7–/+ 8.d4 0–0 (better is 8...ed3!? 9.Qd3 Ne5–/+) 9.c5+= Be7 10.Nd2 a6 11.f3 ab5 12.Bb5 c6 13.Be2 b6 14.cb6 Qb6 (14...Nb6 15.a5 Nc4 16.Bc4 dc4 17.Qa4 (17.Nc4? Rb8 18.Qc2 Bc4–+) 17...ef3 18.Ngf3+=) 15.Qc2 (better is 15.Qb6!? Nb6 16.a5=) 15...ef3 16.Ngf3 Rfb8 (16...Ng4 17.Nf1–/+) 17.Bc3+= c5 18.0–0 c4 19.a5 Qb5 (19...Qc6 20.Nh4+=) 20.Rfb1 (20.Ng5!?=) 20...Qc6+= 21.Ne5 Qc7 (21...Rb1 22.Qb1 Ne5 23.de5+=) 22.a6 (22.Rb8!? Rb8 23.Nd7 Bd7 24.e4=) 22...Bd6+= 23.Ba5 (23.Rb8 Nb8 24.e4 Ra6 25.Ra6 Na6+=) 23...Qa7 24.Nc6 (better is 24.Nd7 Bd7 25.Bc3–/+) 24...Qa6?? (better is 24...Rb1 25.Qb1 Qa6–+) 25.Nb8+= Qc8?? (better is 25...Rb8 26.Bc7 Rb1 27.Qb1 Qc6 28.Bd6 Qd6 29.Ra8 Nf8+=) 26.Nd7+– Qd7 27.Bc3 Ra1 28.Ra1 h6 29.Nf3 Ne4 30.Ne5 Qe7 31.Bf3 Qf6 32.Be4 de4 33.Ra8 Kh7 34.Qe4 Bf5 35.Qf4 g5 36.Qg3 h5 37.Ra7 h4 38.Qf2 Be5 39.de5 Qe6 0–1. jura1946 – cieloduro, internet, 2013.

6.Qb3 Nbd7–/+ 7.Bd4 c5 (7...Bc5 8.d3–/+) 8.bc6+= bc6 9.cd5 Bd5 10.Bc4 Rb8 11.Qc2 Bd6 12.Ba7 (12.Bd5 cd5 13.Ba7+=) 12...Rb4 (12...Bc4 13.Qc4 Ne5 14.Qe2 Nd3 15.Kf1–/+) 13.Bb3 (13.Bd5 A) 13...Nd5 14.a3 Qg5 15.Ne2= (15.ab4 Qg2 16.Qc6 Nb4 17.Qd6 Nd3 18.Kd1 Qf1 19.Kc2 Qc1 20.Kb3 Qb2 21.Ka4 Qa1 22.Na3 Nf2–+); B) 13...cd5 14.Ne2 0–0=) 13...Qa5 (13...Ne5!?–/+) 14.Bd4 0–0 (14...Ne5 15.Bd5 Nd3 16.Kf1 cd5 17.Qc6 Ke7 18.Bf6 gf6 19.Nc3+=) 15.Ne2 (15.Bc3 Bb3 16.Bb4 Bc2 17.Ba5 Rb8–/+) 15...Bb3 16.ab3 Qg5 17.0–0 (17.Ng3=) 17...Ng4 (better is 17...Bh2!? 18.Kh2 Qh5 19.Kg1 Qe2=) 18.Ng3 (18.Qe4?? Bh2 19.Kh1 Qh4 20.Qg4 Qg4 21.Kh2 Qe2–+) 18...h5? (18...Bg3 19.fg3 (19.hg3 Qh5 20.Rc1 Qh2 21.Kf1 Qh1 22.Ke2 Qg2–+) 19...Qh6 20.h3+/–) 19.h3?? (19.Qc6 Bg3 20.fg3 Ngf6+–) 19...Nge5?? (better is 19...Nf2!? 20.Rf2 Bg3=) 20.Ne4 (better is 20.Bc3!? f5 21.Bb4 Bb4 22.Ne2+–) 20...Nf3+/– 21.Kh1 (21.Kh1 Nd4 22.ed4+/– (22.Ng5?! Nc2 23.Ra2 Ne3 24.de3 Be7=)) 1–0. jura1946 – cor5nel, internet, 2013.

6.Qb3 Nbd7 7.cd5 Nc5 8.Qc2 Nd5 9.a3 –/+.

6.Qc2 c6 7.a4 Be7 8.cd5 Qd5 9.Nc3= Qb3 10.Qb3 Bb3 11.Nge2 0–0 12.Nd4 Bd5 13.Nd5 cd5 14.Nf5+/– Re8 15.Ne7 Re7 16.Bf6 gf6 17.Rc1 Nd7 18.Be2 b6 19.Rc7 Kf8 20.0–0 Nc5 21.Re7 Ke7= 22.Ra1 Nb3 23.Rd1 Rc8 24.Kf1 Rc2=+ 25.d3 Ra2 26.de4=+ de4 27.Bc4? Nd2–+ 28.Rd2 Rd2 29.Bb3 f5 30.Ke1 Rd7 31.Ke2 Kd6 32.Kd2 Kc5 33.Kc2? Kb4 34.h3 h6 35.g3 Rc7 36.Kb2 f6 37.g4 fg4 38.hg4 Rg7 39.Bd1 Rd7 40.Kc1 Rd1! 41.Kd1 Ka4 0–1. hal1958 – d7d6, playchess.de, 2003.

6.Qc2 Nbd7 7.cd5 Bd5 8.Nc3 c6 9.a4 (9.Rc1 Nc5 10.f3 Rc8+=) 9...Be7 10.Nge2 (10.f3 Nc5=) 10...Bd6 (10...Bb3 11.Qb1+= (worse is 11.Qb3 Nc5 12.Qc2 Nd3 13.Kd1 Nf2 14.Ke1 Nh1–/+)) 11.Nd5 cd5 12.Nd4 0–0 13.Be2 Rc8 14.Qd1 Ne5 15.f4 1–0. GuestLTYT – GuestKMKT, freechess.org, 2017.

6.Qc2 Be7 7.d3 ed3 8.Bd3 dc4 9.Bc4 Bc4 10.Qc4= Nbd7 11.Nf3 0–0 12.Nbd2 Nb6 13.Qc2 Bb4 14.0–0+= Bd2 15.Nd2 Re8 16.Rac1 Rc8 17.Rfd1 Qe7 18.Qf5 Qe6 19.Qe6 Re6 20.Bd4 h6 21.Nc4 Nc4+= 22.Rc4 b6 23.Rdc1 Nd5 24.a4 Ra8 25.f3 Rae8 26.e4 Nf4 27.Kf1 Nd3 28.R1c2 f5+/– 29.Rc7 R6e7 30.Ke2 fe4 31.fe4 Nf4 32.Kf3 Ne6+= 33.R7c4 Nd4? 34.Rd4+– Rf8 35.Kg3 Rf6 36.Rc8 Kf7 37.Rcd8 Rfe6 38.Kf3 g5 39.R8d7 Rf6? 40.Ke2 Rfe6 41.Kd3 Kf6? 42.h3?? h5? 43.g4 hg4 44.Re7 Re7 45.hg4 Rh7 46.Rd5 Rh4 47.Rd7+– Rg4 48.Kd4 Rh4 49.Ra7+– g4 50.Ke3 Ke5 51.Rb7 Rh6 52.Re7+– Kd6 53.Rg7 Rh4 54.Rg5 Rh3 55.Kf4 Ra3 56.Kg4 Ra4+/– 57.Kf5 Rb4 58.Kf4 Kc7 59.Re5 Kd6+/– 60.Kf5 Rb2 61.Rd5 Ke7+/– 62.Ke5 Rc2 63.Rd6 Rc5= 64.Rd5 Rc4 65.Rd4 Rc5= 66.Rd5 Rc4 67.Kf5+/– Rc5?? 68.Rc5+– bc5 69.Ke5 c4 70.Kd4 c3 71.Kc3 Kd6 72.Kd4 Ke6 73.Kc5 (73.Kc5 Kd7 74.b6+–) 1–0. Istvanny (1635) – Rennett, internet, 2007.

6.Qc2 Be7 7.cd5 Bd5 8.Bc4 Bc4 9.Qc4 c6 (better is 9...Nbd7!?=+) 10.bc6 Nc6 11.Nc3?? (11.Bf6 Bf6 12.Qe4 Qe7 13.Qe7 Ke7 14.Nc3+=) 11...Bb4?? (11...Nb4!? 12.Ke2 Rc8 13.Qb5 Rc6–/+) 12.Rc1?? (better is 12.Ne4 Be7 13.Nf6 Bf6 14.Qe4 Kf8 15.Rb1+/–) 12...0–0–/+ 13.Nge2? (better is 13.Nb1 Re8 14.a3–/+) 13...Ne5–+ 14.Qb4 (14.Qb3 Nd3 15.Kf1 Nc1 16.Nc1–+) 14…Nd3 0–1. valpa – Sirius, playchess.de, 2003.

6.Ne2 Nbd7 7.Nf4 Be7 8.cd5 Bf5 9.Nc3 0–0 10.d4 ed3 (better is 10...Re8!?=) 11.Bd3+/– Bd3 12.Qd3 Bd6 13.Nce2 Ne5 14.Qb3 Ne4 15.Rc1 Qh4 16.Ng3 Ng3 17.fg3 Qh6 18.0–0 Ng4 19.h3 Nf6 (19...Ne5 20.Bd4+/–) 20.Rc4 (better is 20.Bf6!? gf6 21.a4+–) 20...Rfe8 21.Qd3 Re7 22.e4 Rae8 23.Re1 Nd7 24.Qf3 Ne5 25.Be5 Be5 26.Kh2 Qg5 (26...a6!? 27.a4 ab5 28.ab5 Qb6+=) 27.Nd3+/– Bd6 28.Ra4 f5 (better is 28...b6!?+/–) 29.e5+– Be5 30.Ne5 Re5 31.Re5 Re5 32.Ra7 Qd8 33.Qa3?? (33.Rb7 h6+–) 33...Kf7?? (better is 33...Qd5 34.Ra8 Kf7=) 34.Qb3 (34.Rb7 Re7 35.Qf3 g6+–) 34...Kg6 35.Rb7 Rd5 (35...Qd5 36.Qd5 Rd5 37.a4+–) 36.b6 (better is 36.Rc7! Qc7 37.Qd5+–) 36...cb6 37.Rb6 Rd6 38.Rb7 (better is 38.Rd6 Qd6 39.a4+–) 38...Rd7?? (better is 38...Rf6+/–) 39.Rb6 (better is 39.Qe6 Qf6 40.Qd7+–) 39...Rd6 40.Rb7?? (better is 40.Rd6 Qd6 41.a4+–) 40...Rd7 41.Rb4 (better is 41.Qe6 Qf6 42.Qd7+–) 41...Rd3 42.Qe6 Kh5?? (better is 42...Qf6 43.Qe8 Kg5+–) 43.Rh4 (43.Qf5 Kh6 44.Rh4 Qh4 45.gh4 Rg3 46.Kg3 g6 47.Qf8 Kh5 48.Qf4 h6 49.Qf3) 43...Kg5 44.Rh7 (44.Qf7 g6 45.Rh5 Kh5 46.Qh7 Kg5 47.Qh4) 44...Qf6+– 45.Qe2 (45.Qe8 Qh6 46.Rh6 Kh6 47.Qe6 g6 48.Qg8+–) 45...Qd4 (45...Qd6 46.Rg7 Kh6+–) 46.Rg7! Kh6 (46...Qg7 Deflection from d3 47.Qd3) 47.Rb7 (47.Re7 Rg3 48.Kg3 Qd6 49.Qe5 Qe5 50.Re5+–) 47...Qd6 (47...Qe3 48.Rb6 Kg7 49.Qe3 Re3+–) 48.Rb6 Qb6 49.Qd3 Qa5 50.Qd6 Kg5 (50...Kg7 51.Qd7 Kf6+–) 51.h4 Kh5 52.Qf6 (52.Qf6 f4 53.gf4+–) 1–0. Bigalke,Andre – Zacharias,Alexander, Wichern op 4th, 1997.

6.Bf6 Qf6 7.Nc3 Qd8 8.Qa4!? +=/+–.

6.Nh3 c6 7.cd5 cd5 (7...Qd5?! 8.Nf4 Qf5 9.Qc2=; 7...Nd5?! 8.Nc3 Nc3 9.Bc3 Bh3 10.gh3=) 8.Be2 (better is 8.Nf4!?=) 8...Bh3–/+ 9.g3?? (better is 9.gh3 Nbd7 10.Rg1–/+) 9...Be7 10.Bf1 Bf1 11.Kf1 Qd7 12.a4 Qh3 13.Ke2 Qg4 14.Ke1 Qd1 15.Kd1 Nbd7 16.Ke2 0–0 17.Re1 Rac8 18.Kf1 Nc5 19.Nc3 Nd3 20.Reb1 Bb4 21.Bc1 (21.h3 Nb2 22.Rb2 Bc3 23.dc3 Rc3–+) 21...Bc3 22.dc3 Rc3 23.Bd2 Rc2 24.Be1 Ng4 0–1. valpa – Sirius, playchess.de, 2003.

6.Nh3 Bh3 7.gh3 Nbd7 8.cd5 Nd5 9.a3 –/+.

6.cd5 Qd5

7.a4 Bb4 8.Bc3 Bc3 9.Nc3= Qd6 10.f3 ef3 11.Nf3 0–0 12.Be2 Nbd7 13.0–0 Nc5 14.Nd4 Nce4 15.Ne4+= Ne4 16.Rc1 Rac8 17.Bf3 Nc5? 18.Ne2?? b6?? 19.Nf4 Rfd8? 20.d4+– Nd7 21.Ne6 Qe6+/– 22.Qe1 Nf6 23.Rc2 c5 24.dc5 Rc5 25.Rc5 bc5 26.Qc3 Rc8 27.Rd1 h6 28.Be2 Ne4 29.Qe1 Qb3 30.Ra1?? Qe3–+ 31.Kf1 Nd2 (31...Nd2 32.Qd2 Qd2–+) 0–1. valpa – Sonea, playchess.de, 2004.

7.Nc3 Qd7 8.Qc2 Bf5 9.Rd1 Bd6 10.d3 ed3 11.Bd3=.

7.Nc3 Qd8 8.Qc2 Bb4 9.Nge2 (9.a3 Bc3 10.Qc3 a6=) 9...0–0 (9...Nbd7 10.Nd4 (10.Ne4? Ne4 11.Nc3 Ndc5–+) 10...Nc5 11.Na4 Nd3 12.Bd3 ed3 13.Qd3+=) 10.Ng3+= The pressure on e4 grows 10...Re8 (10...Bc3 11.dc3 Re8 12.c4+=) 11.a3 (11.Nge4 Nbd7+=) 11...Ba5 (11...Bc3 12.dc3 c6 13.Ne4 Ne4 14.Qe4+=) 12.Nce4 (12.Nge4 Ne4 13.Qe4 c6+=) 12...Ne4 13.Ne4 Bf5 (13...a6 14.Bd3+=) 14.Qa4 (14.Bd3 Be4 15.Be4 Qd2 16.Qd2 Bd2 17.Kd2 Re4+=) 14...b6 (14...c5 15.Nc3+=) 15.Nc3 Nd7 (15...a6 16.Qf4 Qd7 17.Rd1+=) 16.d4 (16.Qf4 Be6+/–) 16...Qg5 (16...Qh4 17.g3 Qe4 18.Rg1–/+) 17.Rc1 Nf6 18.Ke2?? (better is 18.Qd1 a6 19.ba6+=) 18...Bg4–+ 19.Kd3 Qf5 20.Kc4 Qf2 21.Kb3 Re3 (21...Re3 22.Bc4 Qg2–+) 0–1. Brauer,Christian – Frohs,Josef, corr DDR, 1976.

7.Nc3 Qf5 8.Nge2 Nbd7 9.Nd4=.

7.Nc3 Qf5 8.Nge2 Ng4 9.Nf4 Bd6 10.f3 ef3 11.Qf3+=.

7.Nc3 Qf5 8.h3 Bb4 9.Qa4 c5 10.bc6 Nc6 11.a3+=.

7.Nc3 Qf5 8.h3 Be7 9.g4 (9.Nge2 Bd6=) 9...Qe5 (9...Qg6 10.Nge2 Bd6 11.Nf4 Bf4 12.ef4+/–) 10.Nge2 (10.Qb1 Nbd7 11.Bg2 Rb8=) 10...Nbd7 11.Ng3 Bb4 (11...h5 12.gh5 Bd5 13.Qc1=) 12.Qc2 e4 seems the pivot of the position 12...Bc3 13.Bc3 Qd5 14.Bg2 Qb5 15.Rb1 (15.Ne4 Ne4 16.Be4 Qg5+/–) 15...Qc4 16.Ne4 (16.g5 Qa2 17.Qa2 Ba2+–) 16...Ne4+= 17.Be4 0–0? (better is 17...Bd5 18.f3 f6+=) 18.Rb7 Bd5 19.Bh7 Kh8 20.Bd3 Qc6 21.Rc7! Qc7 (21...Qd6 22.e4 Rfe8+–) 22.Bg7! Kg7 23.Qc7 Bh1 24.Qd7 Kg8 (24...Rfd8 25.Qf5 Bd5 26.Be4 Be4 27.Qe4+–) 25.h4 (25.Bc4 Be4+–) 25...Rfd8 26.Qf5 Kf8 (26...Bd5+–) 27.Bc4 Kg8 (27...Ke7+–) 28.Qg6 Kh8 29.Bf7 Bd5 (29...Rd6 30.Qd6 Kg7 31.Qg6 Kf8 32.Qf6 Rc8 33.Be6 Ke8 34.Qf7 Kd8 35.Qd7) 30.Qh6 1–0. Janek – Vesely, internet, 2016.

7.Nc3 Qf5 8.h3 h5 9.Nge2 c5 (9...Nbd7 10.Ng3 (10.Nd4 Qe5 11.d3+=) 10...Qg6 11.d3=) 10.Qa4 (10.Ng3 Qg6 11.d3 Nbd7+/–) 10...b6 (better is 10...Bd6!?= 11.b6=) 11.Ng3 Qg6 12.Nge4 Ne4 13.Qe4 Qe4 14.Ne4 f6 15.f4 Nd7 16.a4 c4 17.Bd4 Be7 18.Be2 0–0 (18...a5 19.0–0+/–) 19.g4 (19.Bh5 a6+–) 19...hg4 20.hg4 (worse is 20.Bg4 f5 21.Bf3 fe4 22.Be4 Rac8–/+) 20...Rad8 21.Bf3 (21.Rh2 Rc8+–) 21...f5? (better is 21...Ne5!? 22.Be5 fe5+/–) 22.gf5+– Bf5 23.Rg1 Bh4 24.Ke2 g6? (24...Nf6 25.Bf6 Bf6 26.Rac1+–) 25.Rh1 (better is 25.Rac1!? Rfe8 26.Nd6 Bd3 27.Kd1 Re7 28.Nc4 Kf8+–) 25...Bf6 26.Nf6 Nf6 27.Rag1 (27.a5!? Rd6+–) 27...Kf7 28.Bf6 Kf6 29.e4 Rfe8 30.e5 Ke6 31.Rh7 Rd4 32.Rc7 (32.Rh4!?=) 32...Rf4+= 33.Rc1 (better is 33.Bc6!? Rd8 34.Ke1–/+) 33...Bd3–+ 34.Ke3 Ke5 35.Re1?? (better is 35.Bc6 Re6 36.Bd5–+) 35...Kf5 36.Kf2 Re1 (36...Re1 37.Ke1 Rf3 38.Rf7 Ke4 39.Re7 Kd4–+) 0–1. Ramirez,Carlos (2380) – Paez Moguer,Joaquin, Malgrat del Mar op, 1998.

7.Nc3 Qg5 8.Qc2 Bf5 9.Nge2 Nbd7 (9...Bd6 10.Ng3 Bg3 11.hg3=) 10.Ng3 Now all is on e4 10...Nc5 11.Nf5 (11.Na4 Na4 12.Qa4 Bd6+=) 11...Qf5 12.h3 (12.f3 Nd3 13.Bd3 ed3=) 12...0–0–0 (12...Qg6 13.Na4 Nd3 14.Bd3 ed3 15.Qc7 Qg2 16.0–0–0+=) 13.Be2 (13.Rc1 Bd6=) 13...h5 (13...Nd3 14.Bd3 ed3 15.Qb3=) 14.0–0= Bd6 15.d4?? (better is 15.Bc4=) 15...ed3–+ 16.Bd3 Nd3 (better is 16...Qd3 17.Qc1–+) 17.Rad1 (17.Rfd1 Be5 18.Na4–+) 17...Qe5 18.g3 Nb2 19.Qb2 Ne4 (19...h4 20.Na4 Qb2 21.Nb2 hg3 22.Kg2 gf2 23.Rf2–+) 20.Rd4 (20.Rd3 Be7 21.Na4 Qb2 22.Nb2 Bf6 23.Rd8 Rd8–+) 20...Ng3! 21.fg3 (21.Rfd1 Nf5 22.R4d3 Qh2 23.Kf1 Qh3 24.Ke1 Nh4–+) 21...Qg3 22.Qg2 Qe3 23.Qf2 Qc3 24.Qf5 (24.Kg2 Be5 25.Rdd1 Rd1 26.Rd1 Rh6 27.Qf5 Re6–+) 24...Kb8 (24...Kb8 25.Rd6 Rd6–+) 0–1. GuestRCTG – GuestYMSX, freechess.org, 2017.

7.Nc3 Qg5 8.d3 Bb4=.

7.Nc3 Qg5 8.h4 Qg6 (8...Qf5 9.d3=+) 9.Nh3 (9.d3 ed3 10.Nf3 Bd6=) 9...Bd6 10.Ng5 (10.h5 Qh6=+) 10...Bf5 11.Bc4 0–0 12.Qb3 Nbd7 (better is 12...h5=+) 13.Nd5?? (13.Nf7 Rf7 14.h5 Qg2 15.Bf7 Kf8 16.0–0–0–+) 13...Be5?? (better is 13...Nd5 14.Bd5 Nc5–+) 14.Ne7+– (14…Kh8 15.Ng6 Bg6 16.Be5 Ne5 17.h5 Nh5 18.Ne4 Be4 19.Rh5+–) 1–0. Straka,Zdenek – Muller,Milos, CZE–ch qual 2nd, 1996.

7.Bf6 gf6 8.Nc3 Qe5+= 9.f4 ef3 10.Nf3 Qh5 11.Be2+=.

6.cd5 Bd5

7.a3 c6 8.Nc3= Qb6 9.a4 a6 10.d3 (better is 10.Nd5!? cd5 11.a5=) 10...Bb4–/+ 11.de4 (11.ba6 Na6 12.de4 Ba5–/+) 11...Ne4 12.Qd3? (better is 12.Nge2–/+) 12...ab5–+ 13.ab5?? (13.a5 Ra5 14.Ra5 Qa5 15.Nge2–+) 13...Ra1 14.Ba1 Qc5 (better is 14...Qa5 15.Bb2 Qa2–+) 15.Nge2–/+ 0–0 (better is 15...f5 16.f3 Bc4–/+) 16.g3?? (16.f3!? Nc3 17.Nc3 cb5 18.Kf2 Bc3 19.Qc3 Qc3 20.Bc3–/+) 16...Qc4 (better is 16...Nc3 17.Bc3 Bh1–+) 17.Qc4–/+ Bc4 18.bc6 (18.Bg2 Be2 19.Be4 Bb5 20.Kd2–/+) 18...bc6 (better is 18...Nc6 19.f3 Be2 20.Ke2 Nc3 21.Bc3 Bc3–+) 19.Bg2+= Be2 (19...Nc5 20.f4–/+) 20.Be4= Bb5 21.f3 (21.Kd1 f5 22.Bc2 Bc4=) 21...Nd7 (21...Rd8!?+=) 22.Kf2= Bc3 (22...Ra8 23.Rb1 Bc3 24.Bc3=) 23.Bc3+= Nc5 24.Bc2 Ra8 25.Ra1 Ra1 26.Ba1 g6 (26...Nd3 27.Bd3 Bd3 28.Bd4+=) 27.h4 Kf8 28.Bd4 Nd3 29.Bd3 Bd3 30.Ke1 (30.g4 h6+=) 30...Ke7 31.Kd2 Bf1 32.e4 Bg2 33.Ke3 Kd6 34.g4 c5 35.Bc3 Kc6 36.Kf2 Bh3 (36...Bh1 37.Ke2=) 37.Kg3 Bf1 38.Kf2 Ba6 (38...Bh3 39.Be5=) 39.f4 Bd3 40.Ke3 Bb1 0–1. Zaichenko,Andrey – Plantu,Thierry, FICGS, 2008.

7.a3 Nbd7 8.Nc3+=.

7.Qc2 Bb4 8.Nc3 Bc3 9.Qc3 =.

7.Qc2 b6 8.Bc4 Be7 9.Bd5 Qd5 10.Nc3 Qc4 11.Rc1 (11.f3 a6=) 11...0–0 (11...a6 12.ba6 Na6 13.f3+=) 12.Nd1 (12.f3 ef3 13.Nf3 a6=) 12...Qc2 13.Rc2 Nd5 14.f3 ef3 (14...f5 15.fe4 fe4 16.Nc3–+) 15.Nf3+= c5 16.bc6 The passed pawn on c6 will quickly become a dangerous weapon 16...Nb4 17.Rc4 N8c6 18.Nf2 Rac8 19.a3 Nd5 20.0–0 (20.e4!? Nf4 21.g3+=) 20...b5= ½–½. Johansson,Ragnar – Seger,Yngve, corr SSKK, 1988.

7.Nc3 Bb4 8.Nd5 Qd5 9.Rc1 c5= (worse is 9...Qa2 10.Bf6 gf6 11.Rc7+/–).

7.Nc3 Bb4 8.Nd5 Qd5 9.Bf6 gf6=.

7.Nc3 Bb4 8.Nd5 Qd5 9.Nh3 Nbd7 10.Nf4 Qd6 11.a3 Ba5 12.Bc4 0–0–0 (12...Nb6!? 13.Bb3 a6 14.ba6 Ra6=) 13.0–0+= Nc5 14.Bd4 Nb3?? (better is 14...Rd7+=) 15.Qb3+– Bd2 (15...Bb6 16.Bf6 Qf6 17.Nd5+–) 16.Bf7 (worse is 16.Ba7 g5 17.Ne2 b6+–) 16...g5 (16...Qe7 17.Nd5 Nd5 18.Bd5+–) 17.Be6 Kb8 (17...Nd7 18.Bh8 Rh8 19.Nh3+–) 18.Qa4 b6 (18...a6 19.ba6 Qc6 20.Qc6 (20.Bf6?! Qa4 21.Bg5 Rd6+=) 20...bc6 21.Rab1 Ka8 22.Bf6 gf4 23.ef4+–) 19.Bf6 gf4 20.Qe4 fe3 21.Bh8 Rh8 22.Bg4 ef2 (22...Qg6 23.Qg6 hg6 24.Kh1+–) 23.Rf2 Qc5 24.Bf3 c6 25.bc6 1–0. GuestNZWM – claudechine, freechess.org, 2017.

7.Nc3 Bb4 8.Nge2 0–0 9.Nf4 (9.Nd5 Nd5 10.a3 Ba5+=) 9...Bc3 (9...Bc3 10.dc3 g5 11.Nd5 Qd5+/–). pcmvr (2450) – mic (2160), net–chess.com, 2006.

7.Nc3 Bc5 8.Qc2 0–0+=.

7.Nc3 Bc5 8.Nd5 Qd5 9.Ne2 Nbd7= 10.Nf4 (10.Nc3 Qe6=) 10...Qg5 11.h4 Qf5 12.Be2 (12.f3 Bd6 13.g4+/–) 12...Nb6 (12...Ne5 13.Rc1 Bd6 14.f3=) 13.a4 (13.Qc2 Bd6 14.g4 Ng4 15.Bg7 Nf2 16.Rg1+=) 13...0–0–0? (13...Rg8 14.Qc2 Bd6 15.a5+=) 14.a5?? (better is 14.g4 Qd7 15.g5+–) 14...Nbd5= 15.g4 Qd7 16.Nd5 (better is 16.g5!? Nf4 17.ef4+/–) 16...Qd5= 17.0–0 (17.b6 ab6 18.ab6 Bb6=) 17...Qe6 (better is 17...Qd2!? 18.Bf6 gf6 19.Qd2 Rd2+=) 18.g5 (better is 18.Qc2 Rd5 19.b6=) 18...Qh3?? (better is 18...Rhg8=) 19.gf6 (better is 19.Bf6 Qh4 20.Bg4 (20.Bg7?! Bd6 21.Bg4 Kb8=; 20.Bd8?! Bd6 21.Bg4 Kd8=) 20...Kb8 21.Bd8 Rd8 22.Ra4 Qg5 23.Re4+–) 19...gf6?? (19...Qh4 20.Bg4 Kb8+/–) 20.Bg4 Kb8 (20...Qg4 21.Qg4 Kb8 22.Qe4 Rd2 23.Bf6 Rg8 24.Kh1+–) 21.Bh3 Rhg8 22.Bg2 (22.Kh1 Rd5+–) 22...Rg6 23.h5 Rh6 24.Qg4 Rd5 25.Qg8 Rd8 (25...Bf8 26.Qf8 Rd8 27.Qd8) 26.Qd8 1–0. GuestZJYV – GuestNQSV, freechess.org, 2016.

7.Nc3 Bc5 8.Nd5 Qd5 9.Ne2 Qg5 10.h4 (10.Ng3 Nbd7 11.Qc2 0–0–0+/–) 10...Qh6 (10...Qd5!?+/–) 11.g4+– Ng4 12.Qc2 Qf6?? (better is 12...Nd7 13.Bh3 Ngf6 14.Bf6 Qf6 15.Qe4 Be7+–) 13.Bf6 Nf6 14.Qc5 1–0. DEFFM – GuestYZBD, freechess.org, 2018.

7.Nc3 Bc5 8.Nd5 Qd5 9.Bf6 gf6 10.Ne2 f5+=.

7.Nc3 c6 8.a4 Bb4 9.Nge2 Nbd7 10.Nf4 0–0 11.Be2 Re8 (11...Nc5 12.Nfd5 Nd5 13.0–0=) 12.0–0 Bd6 13.Nfd5 cd5 14.d3 Qe7 15.de4 Qe5 (better is 15...de4!? 16.Nd5 Qe6=) 16.f4+/– Qe7 (16...Qe6 17.Nd5 Ne4 18.Bg4+/–) 17.e5 (17.Nd5 Nd5 18.Qd5+– (18.ed5? Qe3 19.Kh1 Qe2–+)) 17...Ne5+/– 18.Nd5 Nd5 19.Qd5 (worse is 19.Be5 Be5 20.fe5 Ne3–+) 19...Ng6 20.Bd4 Bf4 21.ef4 Qe2 (21...Rad8!? 22.Qc5 Qc5 23.Bc5 Re2=) 22.Qb7+/– Nh4 (22...Qe4 23.Qe4 Re4 24.Rfd1+/–) 23.Bf2 (23.Rae1 Qa2+–) 23...Nf5 (23...Reb8 24.Qc6 Rc8 25.Rae1+– (25.Bh4?! Rc6 26.bc6 Qe3 27.Bf2 Qf4=)) 24.Qd7 (24.Rae1 Qd2+–) 24...Qh5 25.Ba7 (25.Rad1!? Re7 26.Qc6+–) 25...Re7+/– 26.Qc6 (better is 26.Qd5!? Rea7 27.b6+/–) 26...Rea7+= 27.Rfe1 f6?? (better is 27...Rf8+=) 28.b6+– Ra6 (28...Nd4 29.Qc4 Qf7 30.Qd4 Ra6+–) 29.b7 Rc6 (29...Rf8 30.Qa6 Qf7+–) 30.ba8Q 1–0. Nikolic,Jovane (1690) – Ferreira De Souza,Ricardo, Sao Paulo BRA, 3rd IRT Open, 2013.

7.Nc3 c6 8.a4 Be7 9.Nd5 cd5 (worse is 9...Nd5 10.Qg4+/–; 9...Qd5?! 10.f3=) 10.Ne2 0–0 (10...Nbd7 11.Nd4=) 11.Qb3 (11.Nd4 Nbd7=) 11...b6 (11...Nbd7 12.d4 ed3 13.Qd3 Bb4 14.Bc3 Nc5–+) 12.Nf4= Nbd7 (12...Qd6 13.d3 Nbd7 14.de4 de4 15.Bc4=) 13.Nd5+= Nc5 14.Ne7 Qe7 15.Qa3 Rfe8 (15...Rfd8 16.a5 Rac8 17.Bc3=) 16.Be2 (16.Bc4 Rad8+=) 16...Nd5 (16...Qe6!?+=) 17.0–0+/– Qb7 (17...Rad8 18.f3+/–) 18.Bd4 (18.f3 Rad8+/–) 18...Rac8 (18...Ne6 19.Be5+/–) 19.Rac1 Ne6 20.Bb2 h6 (20...Red8 21.Bc4+/–) 21.Rc4 (21.d3 ed3 22.Bd3 Red8 23.Rc8 Qc8+–) 21...Nf6 (21...a5 22.f3 (22.Re4?! Nc3 23.Bc3 Qe4+=) 22...Ng5 23.fe4 Ne4 24.Qd3 Rc4 25.Qc4+–) 22.Rfc1 (22.Bf6 Rc4 23.Bc4 gf6+–) 22...Nc5 (22...Rc4 23.Bc4 Nd7 24.d3+–) 23.Bf6 gf6 24.f3 (24.d4!? ed3 25.Bd3 Nd3 26.Qd3 Rc4 27.Rc4 Rc8+–) 24...f5+/– 25.fe4 (25.a5 Qd7+/–) 25...fe4 26.Bg4 (26.R4c2 Qd7+/–) 26...Rcd8 27.Qc3 1–0. GuestXHVJ – GuestYZPD, freechess.org, 2016.

7.Nc3 c6 8.Nd5 cd5 9.Ne2 Nbd7 10.Nd4 Bc5 11.Rc1 0–0 12.Be2 a5 13.ba6 ba6 14.0–0 Bb6? (better is 14...Qb6 15.Rb1 Rfc8=) 15.Nc6+– Qe8 16.Ba3 Kh8 17.Bf8 Nf8 18.Qb3 N8d7 19.Rc2 h6 20.Rfc1 Kh7 21.d4 a5 22.Ne5! Ne5 (22...a4 23.Qb4 Ba5+–) 23.de5 (23.Qb6?! Ned7 24.Qc7 Qb8+–) 23...Be3 24.Qe3 (24.ef6?! Bc1 25.Rc1 Qe5+–) 24...Qe5 25.Qc5 Qf4 26.Qc7 (better is 26.Qe7!? d4 27.Qf7 d3+–) 26...Qc7 27.Rc7 d4 (27...Rb8 28.Bd1 Kg6 29.Bb3+–) 28.Rf7 d3 29.Bd1 Re8 (29...Rb8+–) 30.Rcc7 Kg6 (30...Kh8 31.Rg7 Rb8 32.Kf1+–) 31.Rg7 Kf5 32.Rc5 Ke6 (32...Re5 33.g4 Kf4 34.Rc6+–) 33.Bb3 Kd6 34.Ra5 1–0. forsetinn (1805) – elmis (1620), gameknot.com, 2013.

7.Nc3 c6 8.Nd5 Nd5 9.Qg4+/–.

7.Nc3 Nbd7 8.Qc2 Nc5 9.f3=.

7.Nc3 Be6 8.Qc2 Bf5 9.Nge2 Bb4 10.Ng3 Bc3 11.Nf5 Bb2 12.Qb2 0–0 13.Be2 Qd7 14.Nd4 c6 15.bc6 Nc6 16.Nc6 Qc6 17.0–0 Rfd8 18.Rac1 Qd5 19.Rfd1 b6 20.Bc4 Qg5 21.Qb3 Rf8 22.h3 h5 23.Be2 Rac8 24.Ba6 Rc5 25.Rc5 Qc5 26.Rc1 Qa5 27.Bf1 Qd2 28.Rc7 Qa5 29.Bc4 Qe1 30.Kh2 Qf2 31.Bf7 Kh8 32.Qb4 Rd8 33.Qe7 Rb8 34.Bh5 Nh5 35.Ra7 Qg3 36.Kg1 Rc8 0–1. czemar – onelifeliveit, internet, 2014.

7.Nc3 Be6 8.d3=.

7.Nc3 Be7 8.Nd5 Qd5 9.Qa4 (9.Rc1 c5=) 9...0–0 10.Bc4 Qg5 11.g3 (11.Bf1!?=) 11...Nbd7 12.Ne2 Nc5 13.Qc2 Qh5 14.Bd4 Ne6 15.Be6 fe6 16.0–0?? (better is 16.Qc7 Nd5 17.Qb7+=) 16...Qe2–+ 17.Qc7 Rae8 18.Qb7 Qh5 (better is 18...Ng4 19.Qd7 Nf2 20.Qe6 Kh8–+) 19.Bf6–/+ Bf6 (19...gf6?! 20.Qe4 Qb5 21.Qe6 Kh8 22.Rfb1–/+) 20.Rac1 Be5 (better is 20...Qf5!? 21.f3 ef3 22.Rf3 Qd3–+) 21.Qe4 Rf5 22.f4 Bb8 23.a4 e5 24.Qc4 Kh8 25.fe5 Rfe5 (< 25...Be5 26.Qc5=) 26.Qb4 (26.Qf7 Qf7 27.Rf7 Kg8=) 26...Rg5?? (better is 26...Rg8=+) 27.Rf8 1–0. revreverend – sachin3, Live Game Caissa's Web, 2004.

7.Ne2 Bc4 8.Ng3 Bf1 9.Rf1 Nbd7 10.Nc3 (better is 10.Bf6!? Qf6 11.Nc3=) 10...Nc5–/+ 11.Qc2 Nd3 12.Ke2 Nb2 13.Qb2 Qd3 14.Kd1 Bd6 15.Qc2 Bg3 16.Qd3 ed3 17.hg3 0–0 18.f3 a6 19.g4 Rfd8 20.Ke1 (20.ba6 Ra6 21.e4 h6+=) 20...Nd5 21.ba6 Ra6 22.Nd5 Rd5 23.e4 Rda5 24.Kf2 Ra2 25.Ra2 Ra2 26.Ke3 Ra3 27.Rb1 b6 28.Rc1 Ra7 29.Kd3 Kf8 30.Rc2 Ke7 31.f4 Kd6 32.Ke2 c5 33.Rb2 Kc6 34.d3 (34.g5 b5+=) 34...b5 35.f5 (35.g5 Ra8+=) 35...f6 36.Kd2 b4 37.Kc2 Kb5 38.g3? (better is 38.Kb1!?–/+) 38...Ra1–+ 39.Rb1 Ra8 (better is 39...Rb1!? 40.Kb1 h6–+) 40.Kb2–/+ Ra3 41.Kc2 (41.Rd1!?–/+) 41...c4 42.dc4 Kc4 43.g5 Rg3 44.gf6?? (44.Rh1 fg5 45.Rh7 b3 46.Kb2 Rg2 47.Kc1–+) 44...Rg2 45.Kc1 (45.Kd1 gf6 46.e5 fe5–+) 45...gf6 46.Rb2 (46.e5 Kc3 47.Kd1 Rg1 48.Ke2 Rb1 49.e6–+) 46...Rb2 47.Kb2 Kd4 0–1. Anderson,George – Lauritson,Jim (1890), Winnipeg TNT May op, 2004.

7.Ne2 Bd6 8.Nec3 0–0 9.Nd5 Nd5 10.Bc4+=.

7.Bf6 Qf6 8.Nc3 Bb4?? 9.Nd5+– Bd2 (9...Qd6 10.Nb4 Qb4+–) 10.Kd2 Qd6 11.Kc2 0–0 12.Nc3 (12.Nc3 Qf6 13.Ne4+–) 1–0. Heqexe – Stucer, internet, 2017.

7.Nh3 c6 8.a4 (8.Nf4 Nbd7=) 8...Bd6 9.Nc3 Nbd7 10.Nd5 cd5 11.Rc1 0–0 12.Be2 h6 (12...Rc8 13.Rc8 Qc8 14.f4+=) 13.0–0 Qb8 14.g3 (14.Kh1 Rc8=) 14...Rc8 15.Rc8 Qc8 16.Qa1 Qc2 17.Bc3 Qb3 18.Rb1 Qa3 19.Qa3 Ba3 20.Nf4 Rc8 21.Nh5 Nh5 22.Bh5 g6 23.Be2 f5 24.g4 Bd6 (24...Kf7 25.f4=) 25.gf5 gf5 26.f4 Kf7 27.Kf2 Rg8 28.a5 Bc5 (28...b6 29.Ra1=) 29.Rg1 Rg1 30.Kg1 Ke6 31.Kf2 Be7 32.Bd1 Nc5 33.Bc2 a6 34.b6 Nd3 35.Bd3? (better is 35.Ke2 Nb4 36.Ba4=) 35...ed3–+ 36.Ke1 Bh4 37.Kf1 (37.Kd1 h5 38.Kc1+=) 37...Kd6 (better is 37...Kd7–+) 38.Kg2? (38.Bg7 h5 39.Bc3–+) 38...Kc5 (38...Kc5 39.Bg7 Kb5–+; better is 38...Kc6!?–+) 0–1. Francia,Pasquale – Red Fox, itsyourturn.com, 2005.

6.cd5 Nd5

7.Qc2 Nf6+=.

7.Nc3 Nc3 8.dc3 Bd6 9.Qd4=.

7.Nc3 Nc3 8.Bc3 Nd7 9.d3 ed3 10.Qd3 Nc5 11.Qc2 Qd5 12.Nf3 Bf5 13.Qd2 Qd2 14.Nd2 Nd3 15.Ke2 Rd8 16.Rd1 Nb4 17.a3 Bd3 18.Kf3 Bc2 19.Rc1 Nd3 20.Bd3 Bd3 21.a4 Ba3 (21...a6!? 22.ba6 Ba6=) 22.Ra1 Bf8 23.Bd4 Rd5 24.g3 Bb4 25.Rhd1 (25.Bg7? Rg8 26.Bh6 Bd2–+) 25...Rg8 (25...f6 26.Nf1 Rf5 27.Kg2=) 26.g4 f5 27.g5 (27.gf5 Rf5 28.Kg3 Bd6 29.Kg2 a6+=) 27...c6 (27...c5 28.bc6 bc6 29.Ra2–/+) 28.bc6 (28.Rac1!? cb5 29.a5+=) 28...bc6–/+ 29.Rac1 c5 30.Bb2 (30.Bc3 Ba3+=) 30...Kf7 31.Bc3 Ba3 32.Ra1 Bc2 33.Rf1 Bb4 34.Bb4 cb4 35.Nc4 Rc8 36.Nb2 Rd2 37.Kg3 a5 38.Rfc1 (38.h3 Bb3 39.Rfb1 Rcc2–+) 38...Ke6 (38...h6 39.gh6 gh6 40.f3–+) 39.h4 Rc3 40.Nd1 Rc6 41.Nb2 Ke5 42.f3 Rc3 43.Nd1 Rc7 44.Nb2 h6 45.Rf1 Rd6 (45...Rc3 46.Rf2 Rf2 47.Kf2–+) 46.Rac1 Rc3 47.Rfe1 (47.Rf2 b3–+) 47...Bb3 (47...hg5 48.hg5 Rd2 49.Nd1–+) 48.gh6 (better is 48.Rb1–+) 48...gh6 49.Rf1 h5 (worse is 49...Re3 50.Nc4 Bc4 51.Rc4–+) 50.Rg1 (50.Rce1 Rc2 51.Rf2 Rg6 52.Kh3 Rf2 53.Nd3 Kd6 54.Nf2 Ba4–+) 50...Rd2 51.Rg2 Rd7 (51...Rg2 52.Kg2 Re3 53.Kg3–+) 52.Rb1 Re3 (52...Re3 53.Rf1 f4 54.Kh2 Bd5–+) 0–1. Trkn – guest482, ICC, 2004.

7.Nc3 Nc3 8.Bc3 Nd7 9.d3 ed3 10.Qd3 Qg5 11.Nf3 Qc5 12.Nd4 0–0–0 13.Ne6 fe6 14.Qc4 e5 15.Rc1 Qc4 16.Bc4 Bd6 17.Ke2 Rhe8 18.Rhd1 Nc5 19.Bd5 Na4 20.Ba1 Ba3 21.Rb1 Nb6 22.Be4 Rd1 23.Rd1 g6 24.f3 Nd7? 25.Bb7!+– Kb7 26.Rd7 h5 27.Kd3 Re6 28.Ke4 Bd6 29.Kd5 Re8 30.a4 Kb6 31.Bc3 a6 32.ba6 e4 33.f4 g5 34.fg5 Bh2 35.g6 1–0. dottore – Chapo, playchess.de, 2001.

7.Nc3 Nf6 8.d3 Bg4 9.Qc2 ed3 10.Bd3 Bb4 =.

7.Nc3 Nf6 8.f3 Bd6 9.fe4= 0–0 10.Be2 Ng4 (10...a6!?=) 11.Bg4+= Qh4 12.Kf1 (12.g3!? Qg4 13.Qg4 Bg4 14.d3+=) 12...Bg4= 13.Nf3 Qh6 (13...Bf3 14.Qf3 a6 15.e5 Be5 16.Qb7+=) 14.Kf2 Nd7 (14...a6 15.Qa4=) 15.d4 White prepares e5 (15.h3 Be6+=) 15...Rad8 (15...a6 16.e5 Be7 17.Nd5 Bh4 18.g3=) 16.e5 (16.Qa4 Bf3 17.gf3 Qh4 18.Ke2 Qh3+=) 16...Be7= 17.Qc2 f6 (17...Bh4!? 18.Nh4 Qh4 19.g3 Qg5+=) 18.Nd5+/– fe5? (18...Rde8 19.Nc7 Rc8 20.Qb3 Kh8+=) 19.Ne7+– Kh8 20.Qe4 (20.de5?! Qh4 21.Kg1 Bf3 22.gf3 Qe7=) 20...Nf6?! (20...Qg5 21.Nd5 Bf3 22.gf3+–) 21.Qb7 (21.Qe5 Bf3 22.Nf5 Ng4 23.Kg3 Qg6 24.Qg7 Qg7 25.Ng7 Kg7+/–) 21...Bf3 (21...e4 22.Nc6 Rde8 23.h3 (23.Qa7 ef3 24.Ne5 Ne4 25.Kf1 fg2 26.Kg1 Qe3 27.Kg2 Qf2) 23...ef3 24.Ne5 (24.hg4?? Qe3 25.Kg3 f2 26.Kh2 Ng4) 24...fg2 25.Kg2–/+) 22.gf3 (22.Kf3 Nd5 23.Kg4 Ne3 24.Kg3 Qg5 25.Kh3 Qg4) 22...Ng4 23.Kg3 Ne3 24.Qe4 Rf4? (24...Qg5 25.Kf2 Qe7 26.Ke3 Qg5 27.Kd3 Qg2=) 25.Qe3 Rg4 26.fg4 (26.Kg4 Qe3) 26...Qe3–/+ Eliminates the defender e3 (26...Qe3 27.Kh4 Qf2 28.Kh3 Qb2–/+) 0–1. Cossmann,Robert – Vitkevicius,Juozas, CiF, 1994.

7.Nc3 Nf6 8.f3 ef3 9.Qf3 c6 10.Ne4 Ne4 11.Qe4 =+.

7.d3 Bb4 8.Nd2 ed3 9.Bg7 Rg8 =+.

7.Ne2 Nd7 8.Ng3 (8.Nd4 Nc5 9.Ne6 Ne6 10.Bc4=) 8...Qg5 (8...Nc5 9.Bd4+=) 9.Nc3 (9.Ne4!? Qg6 10.Nbc3+=) 9...Nc3= 10.Bc3 Bd6 (better is 10...Nc5=) 11.Ne4+/– Qe7 (better is 11...Qg6!? 12.Nd6 cd6+/–) 12.Nd6 Qd6 13.Bg7 Rg8 14.Bb2 (14.Bd4 Bd5+–) 14...Nb6 (14...0–0–0 15.Qc2+–) 15.Qc2 h5 16.Rc1 0–0–0 17.Ba3 Qd7 18.d4 Kb8 19.Rg1 Bf5 20.Qc3 Nd5 21.Qb3 Be6 (21...h4 22.Bc5+–) 22.Bc5 b6 23.Ba3 Nf4 (23...Rde8 24.Bc4+–) 24.Qb2 (24.Qc3 Nh3 25.Rh1 Ng5+–) 24...Ng6 25.Be2 (25.Bd3 Bd5 26.Kf1 f5+–) 25...h4 (25...Nh4 26.g3+–) 26.Qc2 Rge8 (26...Bd5 27.Bd3+–) 27.h3 (27.Bf3 Ne7+–) 27...Bd5 28.g3 hg3 29.Rg3 Qe6? (29...Nh4+–) 30.Bg4 Qe4 (30...Qf6 31.Qc7 Ka8 32.Bd7+–) 31.Qc7 Ka8 32.Bd6 (32.Bd7 Nf4 33.Rg4 Ne6 34.Re4 Nc7 35.Be8 Be4 36.Rc7 Re8 37.Rf7 Bd3+–) 32...Qh1 (32...Nh4 33.Be5 Ng2 34.Ke2+–) 33.Kd2 (better is 33.Ke2 Qc1 34.Qc1 Rd6+–) 33...Qe4 (33...Qh2 34.Be2 f6+–) 34.Bf3 Qe6 (34...Qf3 35.Rf3 Rd6 36.Qd6 Bf3+–) 35.Qc6! 1–0. woschkat (2200) – nickbarletta (1720), net–chess.com, 2001.

7.Ne2 Bg4 8.Qc2 f5 9.a3=.

7.g3 Nb4 8.Bc3 (8.Nc3 Nd3 9.Bd3 Qd3+=) 8...Na2 (8...Nd3 9.Bd3 Qd3 10.a4–+) 9.Bg2 (9.f3 ef3 10.Bd4 a6–/+) 9...Nc3 (9...f5!?–+) 10.Nc3–/+ f5 11.Nge2 (11.f3 ef3 12.Nf3 c6–/+) 11...Bb4 12.Qa4 (12.f3 ef3 13.Bf3 c6–/+) 12...c5 13.bc6 Nc6 14.Nd4 (14.f3 ef3 15.Bf3 Qd6–/+) 14...Qd7 15.Nc6 Bc3 16.dc3 bc6 (16...Qc6 17.Qc6 bc6 18.f3 ef3 19.Bf3–/+) 17.0–0 0–0 18.Rfd1 Qc7 19.Rd2 Rfb8 20.Bf1 (20.g4 Bb3 (20...fg4?! 21.Qe4 Bd5 22.Qg4=) 21.Qa5 Qa5 22.Ra5 Bd5–/+) 20...Rb7 (20...a5 21.Bc4 Qf7 22.Be2–/+) 21.Bc4 Re8 (21...Bc4 22.Qc4 Kh8 23.Rad1–/+) 22.Be6+= Re6 23.Qc4 Qe7 24.Rad1 Kf7 (24...a5 25.Qa2 Rb5 26.Rd8 Kf7 27.R8d7+–) 25.Rd8 (25.Rd6!=) 25...Kg6+= 26.Kg2 Rf6 27.Qe2 Qc5 28.Qc2 Qa3 29.R1d4 (29.R8d2 Qb3–/+) 29...Rb3 (29...Qb2 30.Qb2 Rb2 31.Rb4–/+) 30.Rc4 (30.g4 Qb2 31.Qd1 f4–/+ (31...Rc3?? 32.gf5 Kh6 33.Qg4 Rf5 34.Qf5+–; 31...Qc3?? 32.gf5 Kh6 33.Qg4 Rf5 34.Qf5+–)) 30...a6 (30...Rb2 31.Ra4 Rc2 32.Ra3 Rf7+=) 31.g4+= Qa5 (31...Re6 32.gf5 Kf5 33.f3+=) 32.gf5 (32.Ra8!? Rb6 33.gf5 Qf5 34.Re4+=) 32...Qf5–/+ (32...Kf5 33.Qe4 Kg5 34.Qh7 Rf2 35.Kf2 Qf5 36.Qf5 Kf5 37.Rc5 Kg6 38.Rc6 Kh7 39.Ra8+–) 33.Re4 Qf3 34.Kg1 Rc3! The mate threat is Rxc2 35.Rg4? (35.Qc3 A deflection 35...Qf2 Demolishes the pawn shield) 35...Kh6 36.Qd1 Qf2 37.Kh1 Rc2 (37...Rc2 38.Qc2 Qc2–+) 0–1. Krolik,Zenon – Zbroja,Tadeusz, corr POL–Exil, 1995.

6.Ne2 dc4

7.Nf4 Nbd7 8.Ne6 fe6 9.Bc4 Nc5 10.0–0 Nd3 11.Bc3 Bb4 12.Be6 Qe7 13.Bc4 Bc3 14.Nc3 0–0–0 15.Qb3 Kb8 16.Ne2 Ng4 17.h3 Ngf2 18.Bd3 Nd3 19.Rf7 Qd6 20.Rg7 Rhf8 21.Ng3 h6 22.Qc3 Rde8 23.a4 Re5 24.Rf1 Rf1 25.Nf1 c5 26.Rg8 Kc7 27.Ng3 Kb6 28.Rg7 h5 29.a5 Kb5 30.Qb3 Nb4 31.Rb7 Ka6 32.Qf7 Nc6 33.Rc7 Qe6 34.Qf8 Ka5 35.Qa8 Nb4 36.Qa7 Na6 37.Rb7 Qc6 38.Rb1 Re8 39.Ne2 (39.Ne2 Re6 40.Nc3+–) 1–0. Rolly – Blitzmich, playchess.de, 2002.

7.Nf4 Nbd7 8.Ne6 fe6 9.Bc4 Nc5 10.0–0 Nd3 11.Bc3 Be7 12.Be6 A) 12...a6 A1) 13.f3 Qd6 (13...ab5 14.fe4 Qd6 15.Qb3 Nc5 16.Bf7 Kf8+/–) 14.Bc4 ab5 15.Bb5 c6 16.Bd3 ed3+=; A2) 13.Bf6 Bf6 14.Nc3 Qe7 15.Nd5 Qd6 16.Nf6 gf6+/–; A3) 13.ba6 Ra6 14.Bc4 Rd6 15.f3 ef3 16.Qf3 c6+–; B) 12...Qd6 13.Bc4 (13.Qb3 Rf8 14.Qc4 Ne5 15.Be5 Qe5 16.Nc3 Bd6+=) 13...Ne5 14.Be5 Qe5 15.Nc3 Bd6 16.g3 0–0–0+/–.

7.Nf4 Nbd7 8.Ne6 fe6 9.Bc4 Nc5 10.0–0 Nd3 11.Bc3 Be7 12.f3 A) 12...Qd7 13.fe4 Qd6 (13...0–0 14.Bd4 Nc5 15.Bc5 Bc5 16.d4 Bb6+/–; 13...Rf8 14.e5 Ne4 15.Bd4 Nec5 16.Qh5 g6+–; 13...0–0–0 14.Qb3 Kb8 15.Be6 Qd6 16.Bd4 Ne4+–) 14.Qf3 Rd8 15.Qh3 Rf8 16.Be6 Ne4+/–; B) 12...Qd6+= 13.fe4 Rf8 (13...Rd8 14.Qa4 0–0 15.Qa7 b6 16.Qb7 Ng4+/–) 14.Qe2 0–0–0 15.Bd4 Ne5 16.Nc3 Nc4+=.

7.Nf4 Nbd7 8.Ne6 fe6 9.Bc4 Nc5 10.0–0 Nd3 11.Bc3 Be7 12.f4 Qd6+= (12...0–0 A) 13.Be6 Kh8 14.Bc4 c6 15.bc6 bc6 16.Qa4 Qb6+=; B) 13.Qe2 Kh8 (13...a6 14.ba6 ba6 15.Be6 Kh8 16.Bc4 Qd7+=; 13...c6 14.bc6 bc6 15.Bd4 Bc5 16.Be6 Kh8+=; 13...c5 14.Bf6 Bf6 15.Be6 Kh8 16.Nc3 Qe7+=) 14.Be5 Bd6 15.Bf6 Qf6 16.Nc3 Nc5=; C) 13.Qb3 Nd5 14.Be5 Ne5 15.fe5 Rf1 16.Bf1 Qd7=; D) 13.Qc2 Nd5 14.Be5 Ne5 15.fe5 Rf1 16.Bf1 Qd7+=) 13.Qb3 Nc5 (13...c6 14.Bd4 e5 15.fe5 Ne5 16.bc6 bc6+=; 13...0–0–0 14.Be6 Kb8 15.Qc4 g6 16.Bd4 Rhf8+/–) 14.Qc2 Rf8 (14...Nd3 15.Bd4 e5 16.fe5 Ne5 17.Be2+/–) 15.Bd4 (15.Be5 Qb6 16.Nc3 0–0–0+/–) 15...Qd7 (15...Ncd7!?+/– 16.Bf6 Bf6+/–) 16.Nc3+– Rd8 (16...0–0–0+/–) 17.a4 Rf7 18.a5 g6 19.Rfd1 Nd5 20.Ne4 Ne4 21.Qe4 c5 22.bc6! bc6 (22...bc6 23.Bd5; 22...Qc6 23.Bd5) 23.Rab1 Nf4 24.a6 Nd5 25.Rb7 Qc8 (25...Qd6 26.Ra7 Rf5 27.Rb1+–) 26.Ra7 Bd6 27.Rf7 Kf7 28.Be5 Qc7 29.Rf1 Kg8 30.Bc3 Bh2 31.Kh1 Qd6 32.Qd4 e5 33.Qh4 Re8 34.Qh2 (worse is 34.Kh2 e4 35.Kh1 Qd8 36.Qd8 Rd8+–) 34...Qc5 35.Qh4 Qd6 36.e4 Kg7 37.ed5 cd5 38.Bd5! Qd5 (38...Qd5 39.Qf6) 39.Qf6 (39.Qf6 Kh6 40.Rf3+–) 1–0. Paige,Roger Leslie – Glidge, Edinburgh, 1992.

7.Nf4 Nbd7 8.Ne6 fe6 9.Bc4 Nc5 10.0–0 Nd3 11.Bc3 Be7 12.Bf6 Bf6 13.Nc3 Bc3 (13...Qe7 14.Rb1 Bc3 15.dc3 0–0–0 16.Qg4 Nc5+=; 13...Be5 14.Qg4 Qf6 15.Qe4 Nc5 16.Qg4 h5+/–) 14.dc3 Qg5 15.Qb3 0–0–0 16.Be6 Kb8+=.

5.c4 Be7

6.a4 0–0 7.cd5 Qd5 (7...Nd5 8.Nc3 Nc3 9.Bc3–/+) 8.Nc3+= Qd8 (8...Qf5 9.Nge2 Nbd7 10.Ng3+=) 9.Qc2= Bf5 (9...Bb4 10.Nge2=) 10.Nge2+= Qd3 (10...Bd6 11.Ng3 Bg3 12.hg3+=) 11.Qd3 ed3 12.Nf4 Rd8 13.h3 h6 (13...h5 14.g4 hg4 15.hg4 Bg4 16.Bd3+=) 14.g4 Bh7 15.Bg2 c6 16.0–0 Rd6 (16...g5 17.Nh5 Nh5 18.gh5+=) 17.e4 (17.a5 a6 18.e4 Nfd7 19.bc6 Nc6+/–) 17...Nbd7 18.Rae1 (18.Ba3 c5+/–) 18...Ne5+= 19.bc6 bc6 20.Nb5 Rd7 21.Be5 cb5 22.Bf6 (22.ab5 Rc8+/–) 22...Bf6+= 23.e5 Bg5 24.Ba8 Bf4 25.Bc6 (25.ab5 Bd2 26.e6 fe6 27.Re6 Bc3+=) 25...Rc7 (25...Rd8 26.Rb1+=) 26.e6+/– fe6 (26...Rc6 27.e7 Bg6 28.e8Q Kh7 29.Qc6 Bd2 30.Re8+–) 27.ab5 (27.Bb5?! Bd2 28.Re6 Bf4=) 27...e5 (27...Bd2 28.Re6 Kf7 29.Bd5+/–) 28.Rc1+– Re7?? (better is 28...Kf8 29.Rfd1 Ke7+–) 29.Bd5 Kf8 30.Rc8 Re8 31.Re8 Ke8 32.Ra1 Bd2 33.Ra7 Bc3 (33...e4 34.b6 Bf4+–) 34.Rg7 d2 35.Bb3 Bd3 36.b6 Bc4 (36...e4 37.Ba4 Kf8+–) 37.b7 Kf8 (37...Ba5 38.b8Q Bd8 39.Qe5 Kf8 40.Bc4 d1Q 41.Kh2 Qg4 42.hg4 Be7 43.Qe7) 38.Rc7 1–0. Janek – Bonnie, internet, 2016.

6.Nc3 0–0 7.a4 Bg4 8.Qb3 d4 9.Nd5 Nd5 10.cd5 de3 11.de3 Qd6 12.Bc3 Bf6 13.Bb4 Qe5 14.Rc1 Rd8 15.Bc4 c6 16.dc6 bc6 17.Bf7 Kh8 18.bc6 Na6 19.Bc3 Qd6 20.f3 Nc5 0–1. jura1946 – dedelso, internet, 2013.

6.Nc3 0–0 7.cd5= Bg4 (7...a6 8.Qb1 (8.Qc2 Re8 9.Ne4 Nd5 10.Ng3 Bd7 11.Bd3=; 8.Qa4 Nd5 9.Qe4 Nf6 10.Qa4 Nbd7 11.Nf3+=; 8.ba6 Na6 9.d3 Bb4 10.de4 Ne4 11.Qd4=) 8...ab5 9.Bb5 Bf5 10.Nf3 Bd7 11.Bd7+=) 8.Qc2 Nbd7 (8...a6 9.d6 cd6 10.Ne4 ab5 11.Bb5+=) 9.Ne4 (9.d3 ed3 10.Bd3 Nc5 11.Bc4+=) 9...Nd5 10.Ng3 (10.Nf3 N7b6 11.Be2+=) 10...Nc5 (10...Nb4 11.Qb1+=) 11.Be2 (better is 11.a3!? c6 12.bc6 bc6 13.Be2+/–; 11.Ba3+=) 11...Nb4+= 12.Qb1 Nbd3 13.Bd3 Nd3 14.Kf1 Nb2 15.Qb2 Qd3 16.N1e2 Bf6 17.Qb1 Qd2 18.Qd1 Rad8 19.Qd2 Rd2 20.Rb1 Rfd8 (20...Be2 21.Ne2 Rfd8 22.f4–+) 21.f3–/+ Be6 22.a4 Ra2 23.Rb4 Be7 24.Re4 Bc5 25.Kf2 Kf8 26.Rc1 Bb6 27.Kf1 Rdd2 28.Nf4 (28.Re5 Bb3 (28...Ra4?! 29.Ne4 Rb2 30.Nc5–+) 29.Nc3 Rab2–+) 28...Rf2 29.Kg1 g5 30.Ne6 fe6 31.Rd1?? (better is 31.Nf1–+) 31...Rg2 32.Kf1 (32.Kh1 Rh2 33.Kg1 Rag2 34.Kf1 Rg3 35.a5 Ba5 36.Re6 Rf3 37.Kg1–+) 32...Raf2 0–1. Maedel,Katja – Germann,Sylke, BL2–Mitte, 1998.

6.Nc3 dc4 7.Bc4 0–0 8.Nge2 Nbd7 9.a4 Nc5 10.0–0 Bg4 11.h3 Be2 12.Ne2 Nd3 13.Bd3 ed3 14.Nf4 h6 15.Qb3 Qd6 16.Ba3 Qe5 17.Nd3 Qe6 18.Qe6 fe6 19.Be7 Rae8 20.Bf8 Rf8 21.Rac1 Nd5 22.Nc5 Re8 23.Nb7 Re7 24.Rc6 Kf7 25.f4 Nb6 26.f5 e5 27.a5 Nd5 28.e4 Nb4 29.Rg6 a6 30.Nd8 Ke8 31.Ne6 ab5 32.Rb1 Nc6 33.Rb5 Nd8 34.Ng7 Kf8 35.Ne6 Ne6 36.Re6 Re6 37.fe6 Ke7 38.a6 Ke6 39.a7 c6 40.Rb6 Kd6 41.a8Q 1–0. jura1946 – strzelec53, internet, 2013.

6.Nc3 dc4=+ 7.Bc4 0–0 (7...Nbd7 8.d4=+) 8.f3 Bf5 9.g4 Bg6 10.h3 (10.g5 Nfd7 11.Ne4 Nb6=) 10...ef3 (10...Qd6 11.Qe2–/+) 11.Nf3 Ne4 (11...Nbd7 12.g5 Ne4 13.Ne4 Be4 14.d3–/+) 12.Ne4 Be4 13.0–0 (13.d3 Bb4 14.Kf2 Bd5=) 13...Qd6 14.Be5 Qc5 (14...Qh6 15.Kg2 Nd7 16.Bd4=+) 15.Qb3 Nd7 16.Bf7?? (better is 16.d4 Qb6 17.Bf4=) 16...Rf7–+ 17.Ng5?! (17.d4 Qd5 18.Nd2 Ne5 19.de5 Qb3 20.Nb3–+) 17...Bd5 (17...Ne5?! 18.Ne4 Qc4 19.Qc4 Nc4 20.Rac1–+; 17...Qe5?! 18.Qf7 Kh8 19.Ne4 Qe4 20.Qf5=) 18.Qd3 (18.Rf7 A) < 18...Ne5 19.Ne6 Be6 20.Qe6 Nf7 21.d4–+; B) 18...Bg5? 19.Rg7 Kf8 20.Qc3 Qc3 21.Bc3+– (21.dc3? Ne5 22.Rc7 Be3 23.Kf1 Be4–+); C) 18...Bb3 19.Rg7 Kf8 20.Nh7 Ke8–+) 18...Rf1 (18...Bg5 19.Bc3 Raf8 20.Rf7 Rf7 21.Bb4–+) 19.Rf1 Bg5 20.Qf5 (20.Bc7 Rf8 21.b6 Rf1 22.Qf1 ab6 23.Bf4 Bf4 24.Qf4 Qc1 25.Qf1 Qd2 26.e4 Qe3 27.Qf2 Qe4 28.Qg3–+) 20...Be3! 21.de3 Qe3 22.Rf2 (22.Qf2 Qe4 23.Qf3 Qf3 24.Rf3 Bf3 25.Bc7 Be2–+) 22...Ne5 23.Qc2 Nd3 0–1. Woehl,Ulrike – Higgelke,Anne, Mecklenburg VP LL1, 1996.

6.cd5 0–0 7.Nc3 a6 A) 8.ba6 Na6 9.d3 Bb4 10.de4 Ne4 11.Qd4 Nc3=; B) 8.Qa4 Bf5 9.d3 ed3 10.e4 Ne4 11.Ne4 Qd5=; C) 8.Qb1 Bf5 9.f3 Re8 10.Qc1 Bb4 11.a3 Ba5=; D) 8.Qc2 ab5 9.Ne4 Nd5 10.Bb5 c6 11.Be2 f5+=.

6.cd5 0–0 7.Nc3 Nd5 8.Ne4 a6 9.Qa4 c6 10.bc6 Nc6 11.Nf3 Bf5 =.

6.cd5 0–0 7.Nc3 Bf5. pcmvr (2535) – pallen (2155), net–chess.com, 2006.

6.Ne2 dc4 7.Nf4–/+.

6.Ne2 c6 7.Ng3 (7.cd5 cd5 8.d3 0–0+=) 7...0–0 8.Be2 a6 (8...dc4 9.Bc4 cb5 10.Bb5–/+) 9.bc6+= bc6 10.0–0 Be6 11.cd5 cd5 (worse is 11...Qd5 12.Nc3 Qe5 13.Qb1+=) 12.d3 Nbd7 13.de4 Ne4 14.Nd2 Ng3 15.hg3 Bf6 16.Bf6 Nf6 (16...Qf6 17.Nf3+=) 17.Qa4= Attacking the isolated pawn on a6 17...Qd6 18.Rfd1 Bd7 19.Qd4 Rfb8 20.a3 Bb5 21.Bf3 Qe6 22.Rac1 Rc8 23.a4 Bd7 24.Nb3 The pressure on the isolated pawn grows 24...Rc1 25.Rc1 Rc8 26.Rc8 Bc8 27.a5 h6 (27...Qc6 28.g4 h6 29.Be2=) 28.Nc5 Qc6 29.Be2 Ne4 30.Ne4 de4 ½–½. Lohr,R – Gross,Wilhelm, corr SOK–90–56, 1990.

6.Ne2 Bf5 7.Nec3 c6 8.a4 0–0 9.Be2 dc4 10.Bc4 cb5 11.ab5 Nbd7 12.0–0 Nc5 13.Be2 Nd3 14.Bd3 Qd3 15.Qe2 Qd7 16.Rd1 Rfd8 17.Na3 Bg4 18.f3 ef3 19.gf3 Bh5 20.Kh1 Qh3 21.Rf1 Bd6 22.d4 Bh2 23.Qh2 Bf3 24.Kg1 Qg4 25.Kf2 Ne4 26.Ne4 Be4 27.Qg3 Qe6 28.d5 Rd5 29.Qg7 1–0. kannisogoet – joaquimmanoel, internet, 2014.

6.h3 0–0 7.Qc2 Bf5 8.Nc3 c6 9.Qb3 Nbd7 10.cd5 Nc5 11.Qd1 cd5 12.Nge2?? (better is 12.Rc1–/+) 12...Nd3 0–1. Dilling,Ralf – Gross,Wilhelm, corr SOK–89–23, 1989.

6.h3 c6 7.a4 (7.Nc3 dc4 8.Bc4 Bf5+=) 7...0–0 8.d3 (8.Nc3 Be6 9.cd5 cd5+=) 8...dc4 9.dc4 Qd1 10.Kd1 Rd8 11.Kc2 (11.Ke1 Be6–/+) 11...Nbd7 (11...c5 12.Nc3 Be6 13.Rd1+=) 12.Nd2 Nc5 13.Bd4 a6 (13...Bd7 14.Bc5 Bc5 15.Be2–/+) 14.bc6 bc6 15.f3 (15.Bc5 Bc5 16.Rb1 Be6–/+) 15...ef3 16.gf3 Bf5 17.Kc3 (17.Kd1 Rd7–/+) 17...Rab8–+ 18.e4 Nfe4! 19.fe4 (19.Ne4 Be4) 19...Ne4 20.Ne4 Be4 21.Be5 (21.c5 Bh1 22.Rd1–+) 21...Bb4 22.Kb3 Bd6 (22...Bh1?! 23.Bb8 Rb8 24.Bd3–+) 23.Ka2 Be5 24.Re1 Rd2 0–1. Frenzel,Lothar – Gross,Wilhelm, corr SOK–90–56, 1990.

6.h3 Be6 7.cd5 Bd5 8.Nc3+=.

6.cd5 Qd5

7.Nc3 Qd6 8.a4 (8.d3 ed3 9.Bd3 Nbd7=) 8...0–0+= 9.Bc4 b6 (9...Nbd7 10.Ba3 Nc5 11.f3+=) 10.Ba3 Qd8 11.Bb2 Bb7 12.Nge2 Nbd7 13.d4 (13.Nf4 c5=) 13...c5 (13...ed3 14.Nd4 Bg2 15.Rg1+=) 14.d5 (14.bc6 Bc6 15.Ng3 a6=) 14...Bd6 (better is 14...Ne5!? 15.Qb3 Nc4 16.Qc4 Bd5 17.Nd5 A) 17...Nd5? 18.Rd1+– (18.Qe4?! Bf6 19.Rd1 Re8=); B) 17...Qd5 18.Qd5 Nd5–/+) 15.Qc2= Ne5 16.Ne4 Ne4 (16...Nd5 17.Bd5 Bd5 18.Nd6 Bg2 19.Be5 Bh1 20.0–0–0+–) 17.Qe4 Re8 (17...f5 18.Qc2+=) 18.Qc2 (18.Rd1 Qg5 19.Be5 Re5+=) 18...Ng4 (18...Nc4 19.Qc4 Be5 20.Be5 Re5 21.Nc3 Bd5 22.Nd5 Qd5 23.Qd5 Rd5 24.Ke2=) 19.Ng3 (better is 19.e4+=) 19...Bg3? (better is 19...Qh4 20.0–0–0 Bc8+=) 20.hg3+– h6 21.Qf5 Bc8 22.Qf4 Qe7 (better is 22...Qd7+–) 23.d6 Qd7 24.0–0 (better is 24.Rh4!? Rf8+–) 24...a6 (24...g5!? 25.Qf3 Bb7 26.Qe2+–) 25.Rfd1 (25.Bd5 Ra7 26.Bc6 Qd8+–) 25...Ra7 26.Bd5 Qf5 27.Bc6 Qf4 28.gf4 Bd7 29.Bd7 (29.e4 Rd8+–) 29...Rd7 30.ba6 Ra8 31.Be5 Ra6 32.g3 (32.e4 Kf8+/–) 32...h5 (32...f5 33.Re1+/–) 33.Kg2 Nh6 (better is 33...Ra8+/–) 34.f3 (better is 34.e4+–) 34...f6= 35.Bb2 Nf7 36.e4 Rd6 (36...Nd6? 37.e5 fe5 38.fe5+–) 37.Rd6 Nd6 38.e5 fe5 39.Be5 (39.fe5 Nc4 40.Bc3 Ne3 41.Kf2 Nd5=) 39...Nc4+= 40.Kf2 Kf7 41.Bc3 g6 42.Ke2 Nd6 43.Kd3 Nf5 44.g4 hg4 (44...Nd6!?–/+) 45.fg4= Ne7 (45...Nd6 46.Be5 Ke6 47.Kc3=) 46.Kc4+= Ra8 47.Kb5 (47.a5 ba5 48.Ba5 Nc6+=) 47...Nd5= 48.Be5 g5 (48...Ke6!?=) 49.fg5+/– Kg6 (49...Rc8!? 50.Rd1 Ke6+/–) 50.Kc6 Ne7 (better is 50...Nb4 51.Kb6 Nc2+–) 51.Kd7?? (better is 51.Kb6 Kg5 52.a5 (52.Kc5?! Ra5 53.Kd6 Nd5+–) 52...Kg4 53.a6+–) 51...Ra7 52.Ke6 Nc6 53.Bf6 Nd4 54.Kd5 (54.Kd6 Ra6+/–) 54...Nf3 Exerts pressure on the isolated pawn (54...Nf3 55.Kc6 c4+–). GuestQSPB – GuestQWZQ, freechess.org, 2017.

7.Nc3 Qd7 8.d3 ed3 9.Bd3 0–0 10.Qc2 (10.Qe2 a6=) 10...h6 (10...Qg4 11.Ne4 Re8 12.f3 Qh4 13.g3=) 11.Rd1 (11.Nf3 Rd8 12.Rd1 Bd6+=) 11...Qg4= 12.Bf1 (12.f4 Bc5 13.Nd5 Nd5 14.Bh7 Kh8 15.Qc5 Re8 16.Qd5 Kh7=) 12...c6 (12...Bf5 13.Qe2=) 13.h3 Qf5 (13...Qb4 14.Rd4 Qc5 15.Nf3=) 14.Bd3 (14.Qf5 Bf5 15.Nf3 a6=) 14...Qg5 15.Bf1 (15.g4 Qc5=) 15...Bf5 16.Qb3 (16.e4 Ne4 17.Ne4 Re8+=) 16...Ne4 (16...Be6 17.bc6 Bb3 18.cb7–/+) 17.Nf3+= Be6?? (better is 17...Qg6+=) 18.Qc2+– (18.Ng5?! Bb3 19.Nge4 Bd1 20.Nd1 a6 21.bc6 Nc6+–; 18.Ne4?! Bb3 19.Nfg5 Bd1 20.Nf7 Ba4+= (worse is 20...Rf7 21.Kd1 Rf5 22.Bc4 Kh7 23.g4+=)) 18...Qc5 (18...Qg6 19.Ne5 Qf5 20.Qe4 Qe4 21.Ne4 Ba2 22.Rd4+–) 19.Qe4 Nd7 (19...Bf5 20.Qd4 Rc8 21.e4+–) 20.Qd4 (20.Nd4 Bd5 21.Nd5 cd5+–) 20...Rad8 (20...Rfc8 21.bc6 bc6 22.Ne4 Qd4 23.Nd4 (worse is 23.Bd4 Ba2 24.Bg7 Kg7 25.Rd7 Bb4 26.Kd1 c5+–; 23.ed4?! Ba2 24.Ne5 Bd5 25.Nd7 Be4+–) 23...Ba2 24.Nf5+–) 21.Ne4 (21.Nd5 f6 22.Ne7 Qe7 23.Qa7 cb5+–) 21...Qb4 22.Bc3 Qd4 23.ed4 (better is 23.Nd4 Nf6 24.Nf6 Bf6 25.bc6 bc6+–) 23...Ba2 24.bc6 (24.Ba5 Rde8 25.bc6 bc6+–) 24...bc6 25.Ra1 Bd5 26.Bd3 f5 (26...Nf6 27.Ned2 Rd7 28.Kd1+–) 27.Ned2 Ra8 28.0–0 (better is 28.Kd1+–) 28...Bg5? (28...g6+–) 29.Ng5 hg5 30.Bc4 (30.Rfb1!? Rf7+–) 30...Nf6 (30...Nb6 31.Ba6+–) 31.Rfe1 Kf7 (31...g4 32.hg4 Ng4 33.Re7+–) 32.Bb4 (32.Ra6 Rfc8+–) 32...Rfe8 (32...Rfb8 33.Ra4+–) 33.Re8 Ke8 34.Bd5 (34.Re1 Kf7+–) 34...Nd5 (34...cd5 35.Nf3 Ne4 36.Ne5+–) 35.Bc5 a5 (35...a6 36.Nf3+–) 36.Nc4 a4 37.Nb6 (better is 37.Nd6 Ke7+–) 37...Nb6 38.Bb6 Kd7 (38...Kf7 39.Ra3+–) 39.Bc5 g4 (39...Ke6 40.Re1 Kd5 41.Re3+–) 40.hg4 fg4 41.Ra3 (41.Kh2 Ke6+–) 41...Ke6 42.f3 (42.Kh2!? Kf5+–) 42...gf3 43.gf3 Kf5 44.Kf2 g6 45.Kg3 (45.Ke3 Kg5+–) 45...Ra5 46.Re3 Ra8 47.Re5 (47.f4 Rb8+–) 47...Kf6 48.Be7 Kf7 49.Ba3 Ra7 (49...Rd8 50.Re7 Kg8 51.Kf4 Rd4 52.Kg5+–) 50.Rc5 Ra6 51.Kg4 Kf6 52.f4 Ra8 (52...Kf7+–) 53.Rc6 (53.Rc6 Kf7 54.Kg5+–) 1–0. DEFFM – GuestFKYK, freechess.org, 2016.

7.Nc3 Qd8 8.Qc2 Bf5 9.f3 Bd6 (9...0–0 10.fe4 Bg6 11.Nf3 Bb4 12.Be2 a6+=) 10.g3 0–0 11.Ne4 Ne4 12.fe4 Be6+=.

7.Nc3 Qd8 8.d3 ed3 (8...Bg4 A) 9.Qd2 ed3 (9...Bb4 10.a3 Ba5 11.Qc2 Qd5 12.de4 Qe4=) 10.Bd3 Nbd7 11.Ne4 0–0 12.f3 Be6=; B) 9.Qc2 ed3 10.Bd3 a6 11.h3 Be6 12.Nf3 ab5=) 9.Bd3 (9.Qd3 0–0 (9...Nbd7 10.Rd1 0–0 11.Nf3 Bd6 12.Qc2 Nc5=; 9...Bd7 10.Nf3 0–0 11.Be2 a6 12.0–0 Bb5=) 10.Rd1 Qd3 11.Bd3 a6 12.ba6 Na6=; 9.Nf3 Bf5 (9...Bg4 10.Bd3 a6 11.0–0 c6 12.a4 Bf3=; 9...0–0 10.Bd3 Nbd7 11.Qc2 Nc5 12.Be2 Bd6=; 9...Nbd7 10.Bd3 Nc5 11.Be2 0–0 12.Qc2 Bd6=) 10.Nd4 Bg6 11.Bd3 Bd3 12.Qd3 c5=) 9...0–0 (9...a6 10.Nf3 Bg4 11.0–0 c6 12.a4 Bf3=; 9...Be6 10.Nf3 Nbd7 11.Nd4 Nc5 12.0–0 0–0=; 9...Nbd7 10.Nf3 Nc5 11.Be2 Bd6 12.Qc2 Qe7=) 10.Qc2 Be6 (10...c6 11.Nf3 cb5 12.Nb5 Nc6=) 11.Nf3 c6 (11...h6 12.0–0 a6+=) 12.0–0 (12.Ng5 h6+/–) 12...g6 (12...cb5+=) 13.Rfd1 Qb6 14.Nd4 Bd7 15.a4 cb5 16.ab5 Bc5?? (better is 16...Rc8+/–) 17.Na4+– Qd6 18.Qc5 Qc5 19.Nc5 Bg4 20.Be2 (20.Rd2!? Bc8 21.Nc6 bc6 22.Bf6 Be6+–) 20...Be2 21.Ne2 (21.Ne2 b6 22.Bf6 bc5 23.Nc3+–) 1–0. pcmvr (2645) – deaf (2200), net–chess.com, 2007.

7.Nc3 Qd8 8.f3 ef3 9.Nf3 0–0 (9...a6 10.Qa4=) 10.Bc4 (10.Qc2 a6=) 10...Nbd7 (10...a6 11.0–0=) 11.0–0 Nb6 12.Be2 Bf5 (12...Bd6 13.Qc2=) 13.Nd4 Bg6 14.Qb3 (14.a4 Bc5 15.Nb3 Bd6+=) 14...Bd6 15.a4 (15.Nf5 a6+=) 15...Ne4 (15...Bc5 16.Nb1=) 16.Ne4+= Be4 17.Nf3 Bd5 (17...a5!?=) 18.Qc3+/– f6 19.a5 Nd7 20.Bc4 Bc4 21.Qc4 Kh8 22.Qh4 (22.a6 Nb6 23.Qg4 ba6 24.Ra6 Qc8 25.Qc8 Nc8+/–) 22...Qe7 (22...a6 23.ba6 Ra6 24.Bd4=) 23.Qh3 (23.Bd4 a6 24.Rab1 b6+=) 23...Ne5 (23...a6 24.Nh4 Qf7 25.ba6 Ra6 26.Nf5=) 24.Ne5 (24.a6 Rfb8+=) 24...Be5 (24...fe5 25.Qg4=) 25.d4 (25.Ba3 Bd6 26.Bd6 Qd6+=) 25...Bd6= 26.Rf3 (26.Qf3 Rfe8 27.Bc1 Rab8=) 26...Rfe8 (26...Qe4 27.Qf5 Qf5 28.Rf5=) 27.Raf1 (27.Qh5 a6=) 27...Bb4 (27...Qe4 28.Qh5+=) 28.d5 (better is 28.a6=) 28...Ba5 (28...Bc5+=) 29.Kh1?? (29.Rf6 Rf8 (29...Qe3?? 30.Qe3 Bb6 31.Bd4+–) 30.Rf8 Rf8 31.Rf8 Qf8+/–) 29...Bb6 (better is 29...Qb4 30.Ba1 Re7–/+ (worse is 30...Qb5 31.Rf6 Qd3 32.R6f3+/–)) 30.Rf6+= Qc5?? (better is 30...Qb4 31.Qd7 Rg8+= (31...gf6?? 32.Bf6 Kg8 33.Qg7)) 31.Rf7 Rg8 32.Bd4 (better is 32.Qg4 Qd4 33.Bd4 Bd4 34.Qd4+–) 32...Qb5 (better is 32...Qd5 33.Ba1 Qg5+= (33...Qb5?? 34.Qg3 Qf1 35.Rf1+–)) 33.Rg7?? (better is 33.Be5 Rae8 34.Qg3 Re5 35.Qe5+–) 33...Bd4 (33...Qf1) 34.Rh7 1–0. GuestPRVN – GuestKSVD, freechess.org, 2017.

7.Nc3 Qe6 8.d3=.

7.Nc3 Qe6 8.Nge2 Qg4 9.h3 Qh5 10.Nf4 Qd1 11.Rd1 0–0 12.Bc4 c6 13.a4 g5 14.Nfe2 Bf5 15.Nd4 Bd7 16.0–0 cb5 17.ab5 Bc5 18.Nb3 Bb6 19.d4 ed3 20.Bd3 Be6 21.Bc2 Nbd7 22.Nd4 Bc4 23.Rfe1 Ba5 24.Nf5 Bc3 25.Bc3 Rfd8 26.Nd6 Be6 27.Nb7 Rdc8 28.Bf6 Nf6 29.Ba4 Rc4 30.Rd4 Rac8 31.Red1 Rd4 32.Rd4 Rc4 33.Nd6 Rd4 34.ed4 Bd5 35.Bc2 Be6 36.Bd3 h5 37.f3 Kf8 38.Ne4 Ne4 39.fe4 Bd7 40.d5 f6 41.Kf2 h4 42.Ke3 Ke7 43.Kd4 Kd6 44.Be2 Bc8 45.Bg4 Bg4 46.hg4 Kd7 47.Kc5 Kc7 48.d6 Kd7 49.Kd5 1–0. mete61 – szst, internet, 2013.

7.Nc3 Qf5 8.Nge2 (8.d3 0–0 9.Nge2 (9.Qc2 ed3 10.Bd3 Qg5 11.g3 Rd8 12.Nge2 c6=; 9.de4 Ne4 10.Qc2 Nc5 11.Qf5 Bf5 12.Rd1 Nbd7=) 9...ed3 10.Nf4 Rd8 11.Bd3 Qg5 12.Qa4 Nbd7=) 8...Bd6 (8...Ng4 9.Nf4 Bd6 10.g3 0–0 11.d3 Bb4 12.Qb3 c5+=) 9.Nd4 (9.d3 ed3 (9...0–0 10.Ng3 Qg5 11.de4 Rd8 12.Qc2 Be6+=) 10.Nd4 Qg5 11.Qd3 0–0 12.Rc1 Re8=) 9...Qg5 (9...Qg6 10.d3 a6 11.de4 Ne4 12.Qd3 Bb4=) 10.Qa4 (10.Qc2 Qg6 (10...Qg4= 11.h3 Qg6 12.d3 ed3+=) 11.d3 ed3 12.Qd3 a6+=) 10...Bd7 (10...Nbd7 11.b6 0–0 12.bc7 Nc5=) 11.Nb3 (11.Qc2 Qg4 12.h3 Qg6+=) 11...b6?? (better is 11...Qg6= 12.Na5 Bc8=) 12.Ne4+– Qg6 13.Nf6 (13.Bf6 gf6 14.Nf6 Qf6 15.Qe4 Be6 16.Qa8 Bb3+–) 13...gf6 14.g3 Be5? (better is 14...a6+–) 15.Be5 fe5 16.Rc1 (better is 16.Bg2 c6 17.Rc1 cb5+–) 16...Qd6?? (better is 16...a6+–) 17.Bg2 c6 18.bc6 Nc6 19.Bc6 Bc6 20.Qc6 Qc6 21.Rc6 Kd7 22.Rc1 f5 23.d4 e4 24.Ke2 Rhc8 25.Nd2 h5 26.f3 Rc1 27.Rc1 Re8 28.fe4 fe4 29.Rf1 Kc6 30.Rf5 b5 (30...h4 31.gh4 Kd7 32.Rf7 Ke6 33.Ne4 Kf7 34.Nd6 Ke7 35.Ne8+–) 31.Rh5 b4 32.Rc5 Kb6 (32...Kd7 33.Rb5 a5 34.h4+–) 33.Nc4 Ka6 34.Ra5 (34.Nd6 Rg8+–) 34...Kb7 35.Nd6 Kb6 36.Ne8 Ka5 37.h4 Ka4 38.h5 Ka3 39.h6 Ka2 40.h7 b3 41.Nd6 b2 42.Ne4 Kb3 43.h8Q a5 44.Nd2 Ka2 (44...Kb4 45.Qb8 Kc3 46.Qb3) 45.Qg8 1–0. Buss,Michael – Hoehn,Jan, USCF88CC211, 1988.

7.Nc3 Qg5 8.Qc2 Bf5 9.Nge2 0–0 10.Ng3 Qg6 11.Nf5 Qf5 12.Ne2 Bd6 13.Bf6 Qf6 14.Nd4 Qg6 15.g3 Nd7 16.Bh3 Nc5 17.0–0 Qh5 18.Bf5 Rae8 19.Kg2 g6 20.Bh3 f5 21.a4 b6 22.Qa2 Kh8 23.Rac1 Qg5 24.Rc5 Bc5 25.Ne6 Qe7 26.Nf8 Rf8 27.Qb2 Qf6 28.Qb3 Rd8 29.Rd1 Rd3 30.Qc2 Qd6 31.Kf1 Qd5 32.Ke1 Qb3 33.Qb3 Rb3 34.Ra1 Bb4 35.g4 fg4 36.Bg4 Rb2 37.f3 Rd2 38.Kf1 ef3 39.Bf3 Rh2 40.Rd1 Bd6 41.Kg1 Ra2 42.Rd4 Kg7 43.Kf1 Kf6 44.Ke1 h5 45.Kd1 g5 46.Kc1 h4 47.Kb1 1–0. olawoj – tadania, internet, 2014.

7.Nc3 Qg5 8.d3 0–0 (8...Bg4 9.Qc2 ed3 10.Bd3=) 9.de4+= (worse is 9.Ne4 Ne4 10.de4 Bb4 11.Ke2 Rd8–+) 9...Rd8 10.Qc2 Ng4 (10...a6 11.Nf3 Qg6 12.a3+=) 11.Nf3 (better is 11.Nd5 Rd5 12.ed5 Bb4 13.Ke2 Qd5 14.a4+/–) 11...Ne3? (better is 11...Qg6+/–) 12.fe3+– Qe3 13.Qe2 Qb6 (13...Qh6 14.Nd5 Bd6 15.e5+–) 14.Nd5 (14.Nd5 Qe6 15.Rc1+– (15.Nc7?! Bb4 16.Kf2 Qb6 17.Bd4 Qc7=; 15.Ne7?! Qe7 16.Qe3 c6+–)) 1–0. Janek – Nicolas, internet, 2016.

7.Be2 0–0 8.Nc3 Qg5 9.g3 Rd8 10.h3 Be6–/+ 11.Qc2 Qe5 12.d4 ed3 13.Bd3 Qc5 14.Nf3 Bc4 15.Bc4 Qc4 16.Qb3 Qb3 17.ab3 Nbd7 18.0–0 Nc5 19.Nd4 Bd6 20.Ra2 Nd3 21.Rd1 Nb2 22.Rb2 a5 23.ba6 Ra6 24.Ndb5 Rc8 25.Rbd2 Bf8 26.Rd8 Raa8 (26...Raa8 27.Rc8 Rc8=). Psion – Psion, 4 Min/Zug, 1989.

5.c4 Bg4

6.Qb3 b6 7.cd5 Nd5 8.Nc3 Nc3 9.Qc3 f6 10.Ne2 Bc5 11.Ng3 0–0 12.Ne4 a6 13.Nc5 bc5 14.ba6 Na6 15.Ba6 Ra6 16.0–0 Qa8 17.Qc5 Ra2 18.Qc4 Kh8 19.Ra2 Qa2 20.Qa2 1–0. bauska18 – aarturr37, internet, 2014.

6.Qb3 c5 7.h3 Be6 8.d3 dc4= 9.dc4 Be7 10.Nc3 0–0 11.Nge2 Nbd7 12.Rd1 Qa5 13.Nf4 Bf5 14.Be2 Rad8 15.0–0 h6 16.Ncd5 Rde8 17.Bc3 Qd8 18.Rd2 Bd6?? 19.Rfd1 Nh7? 20.Bf1 Qh4 21.g3 Qg5 22.h4 Qd8 23.Qc2 Bg4 24.Be2 Be2 25.Ne2 Bb8 26.a4 a6? 27.Rb1 ab5 28.cb5 Qc8 29.Ndf4 Nhf6 30.Kh2 Ng4 31.Kg2 Ndf6 32.Rbd1 Qf5 33.Ba1 b6 34.Qb2? Ne5 35.Ng1? Nc4–+ 36.Qc3 Nd2 37.Rd2 Be5 (37...Be5 38.Qc1 Ba1 39.Qa1 Rd8–+). unknown players, 1994.

6.Qb3 Nbd7 7.d4 ed3 8.Qd3 (8.Qd3 Bb4 Pinning; 8.Bd3 dc4 Double attack (8...dc4 Decoy)) 8...Nc5 (8...Bb4 9.Nc3+=) 9.Qc2 Qd7 (9...Qe7 10.Nf3+=) 10.Bf6= gf6 11.cd5 (better is 11.Nc3 Bf5 12.Qd2=) 11...Bg7? (better is 11...Qd5 12.Nd2 Bf5=) 12.Qc5+– f5 13.h3 Ba1 14.hg4 fg4 15.Bd3 (15.Nc3 0–0–0 16.Nge2 Kb8+–) 15...0–0–0 (15...h5 16.Ne2 h4 17.Nbc3+–) 16.Rh5 (16.Qa7 Qd5 17.Be2 Qg2 18.Bg4 Qg4 19.Qa8 Kd7 20.Qb7 Qb4 21.Nd2 Bc3–/+) 16...b6 (16...Kb8 17.Ne2+– (17.Bh7 Rh7 18.Rh7 Qf5 19.Rf7 Qf7+=)) 17.Qc4 (17.Qc6 Qc6 18.bc6 Kb8+–) 17...Qd6 (17...Kb8 18.Ne2+– (18.Bh7?! Rh7 19.Rh7 Qf5=)) 18.Qg4 Kb8 19.Qc4 (19.Qf4 Qf4 20.ef4 a6+–) 19...Rhg8 20.Kf1 (20.Be4 h6+–) 20...Be5 (20...Rg6 21.Rh7 (21.Bg6?! Qg6 22.g4 Qb1 23.Kg2 Rg8+/–) 21...Rg7 22.Rg7 Bg7 23.Nf3+–) 21.Nf3 f6 22.Nc3 (22.Qc6 Qe7+–) 22...Bc3 (22...Rg7 23.g3+–) 23.Qc3 Qf8 (23...Qd7 24.Qc6+–) 24.Nd4 Rg5 (24...Rd7+–) 25.Nc6 (25.Rg5 fg5 26.Nc6 Kb7 27.Nd8 Qd8 28.Qc6 Kb8+–) 25...Ka8 26.Nd8 (26.Nd8 Qc5 27.Qc5 bc5 28.Rh7+–) 1–0. Janek – Farnolf, internet free game, 2017.

6.Qc1 Be7 7.h3 Be6 8.cd5 Bd5 9.Bc4 Bc4 10.Qc4 Qd5 11.Qd5 Nd5 12.Ne2 0–0 13.0–0 Nd7 14.a4 Nb4 15.Na3 Nd3 16.Bc3 Nf6 17.Nc2 Nd5 18.Rab1 f5 19.Ncd4 Nc3 20.dc3 g6 21.Ne6 Rfc8 22.N2f4 Nc5 23.Nc5 Bc5 24.Ne6 Bd6 25.c4 Re8 26.Nd4 Rad8 27.Rbc1 Ba3 28.Rc2 Bc5 29.Nb3 Bb4 30.Nd4 b6 31.Nc6 Be7 32.Nd8 Rd8 33.Rcc1 Kg7 34.Rcd1 Rg8 35.Rd7 Kf6 36.Rc7 1–0. mete61 – sak1500, internet, 2014.

6.Be2 Be2 7.Qe2 c6 8.f3 Bd6 9.Nh3 Nbd7 10.0–0 0–0 11.fe4=+ de4 12.Nc3 Ne5 13.Ng5 Nd3=+ 14.Rab1 Qc7 15.h3 Nb2–/+ 16.Rb2 Be5 17.Rc2 Bc3 18.Rc3 h6 19.Rf6+= gf6 20.Ne4 Qe5 21.Qf3 Rad8 22.d4 Qe7 23.Nf6 Kh8?? 24.Qf5 Kg7 25.Nh5 Kh8 26.Nf6 (26.Nf6 Kg7 27.Qh7 Kf6 28.Qh6 Kf5 29.g4 Ke4 30.Qf4#) 1–0. spblex (2125) – peb (2365), net–chess.com, 2009.

5.d3 Bb4

6.c3 Bd6 7.a4 0–0–/+ 8.Be2 a6 9.c4 ab5 10.cb5 c6 11.d4 Bd7 12.Nc3 cb5 13.Nb5 Bb5–/+ 14.Bb5 Qa5 15.Ke2 Nc6 16.Nh3 Nb4 17.Qb3 Rac8?? 18.Rhc1 Ng4 19.Nf4 Nf6 20.Bc3+/– Rc7? 21.Bb4+– Bb4 22.Rc7 Qc7 23.Qb4 Qc2 24.Qd2 Rc8 25.Ra2 Qd2 26.Kd2 g5 27.Ne2 Ng4 28.Bd7 (28.Bd7 Rf8 29.Bg4+–) 1–0. mic (2110) – amikhlin (2290), net–chess.com, 2008.

6.Bc3 Qe7 7.a3 Bc3 8.Nc3+=.

6.Bc3 Qe7 7.de4 Ne4 8.Bb4 Qb4 9.Nd2 c5 10.bc6 bc6 11.Ngf3 0–0 12.Bd3 Bf5 13.0–0 Bg4 14.Nb3 f5 15.h3 Bf3 16.Qf3 Nd2 17.Nd2+/– Qd2 18.Rfd1 Qc3+= 19.Qe2 Nd7. valpa – tako, playchess.de, 2003.

5.d3 c6

6.c4 dc4 7.dc4 Qd1 8.Kd1 Be7 9.Ne2 0–0 10.Nd2 Rd8 11.Nc3 cb5 12.cb5 Bf5 13.Ke1 Nbd7 14.g3 Rac8–/+ 15.Bg2 Ne5–+ 16.Ke2? Bg4 17.f3 ef3 18.Nf3 Nc4 (18...Nc4 19.Bc1 Bb4–+) 0–1. Istvanny – pierre (2145), internet, 2007.

6.bc6 Nc6 7.de4 Ne4 8.Bb5 Bd7 9.Qd5 Nf6 10.Qd1 Qa5 11.Nc3 Bb4 12.Nge2 Qb5 13.0–0! Bc3 14.Bc3 Ne4 15.Bd4 0–0! 16.Nf4 Nd4 17.Qd4 Nf6 18.a4 Qc6 19.h3 Rad8 20.Qb4 Nd5 21.Nd5 Qd5 22.Rfd1 Qc6 23.a5 a6 24.Rab1 Be6 25.Re1 Rb8 26.Qf4 Qd5 27.Ra1 Qf5 28.Qd4 Rfd8 29.Qh4 Bd5 30.e4 Be4 31.Re4 Qc5 32.Rae1 Qc2 33.Re7 Rd1 34.Rd1 Qd1 35.Kh2 Qd6 36.g3 f6 37.Re3 Qc5 38.Qe4 h6 39.Qe6 Kh8 40.Re4 Qa5 41.Rg4 Qc7 42.Qf5 Qf7 43.h4 b5 44.Qf4 Re8 45.h5 a5 46.Rg6 Kh7 47.Qf5 Kg8 48.Qb5 Qc7 49.Qe8 Kh7 50.Qf8 a4 51.Qa3 Qe5 52.Qd3 Qh5 53.Kg2 Qg6 54.Qg6 Kg6 55.f4 a3 56.Kf3 a2 57.Ke4 a1Q 58.f5 Kg5 59.g4 Qe5 60.Kd3 Kg4 61.Kc2 Qe4 62.Kb3 h5 0–1. wojtekkk – pzbramkarz, internet, 2014.

6.de4 Ne4 7.Bd3 Bb4 8.c3 Bd6 9.Nd2 Nc5 10.Ndf3 Nd3 11.Qd3 0–0 12.Ne2 Bg4 13.Ng3 Re8 14.Nd4 c5 15.Ndf5 Bg3 16.hg3 Qf6?? 17.Ne7+– Kf8 18.Nd5 Qf5? 19.Rh7 f6 20.Qf5 Bf5 21.Rh8 Kf7 22.Re8 Ke8 23.Nc7 Kd7 24.Na8 b6 25.f3 Kc8 26.e4 Be6 27.a4 Kb7 28.Nb6! ab6 29.Kd2 Bc4 30.Rh1 g5 31.f4 gf4 32.gf4 Kc7 33.Kc2 Kd6 34.Bc1 Nd7 35.Re1 Ke6 36.g4 Kf7 37.Be3 Ke6 38.Bf2 Kf7 39.Bg3 Kg6 40.Rd1 Nf8 1–0. baxter (1825) – amikhlin (2375), net–chess.com, 2002.

5.d3 Bd6

6.Nd2 0–0+=.

6.d4 0–0 7.Ne2 Ng4 8.h3 Qh4 9.hg4? Qh1–+ 10.Nd2 Bg4 11.c3 Nd7 12.Qc2 Be2 13.Ke2 f5 14.Re1 f4 15.ef4 Rf4 16.g3 Rf2! 17.Kf2 Bg3 18.Kg3= Qg1 19.Kh3 Rf8?? 20.Re2?? Rf6 21.Rg2?? Rh6 22.Kg4 Qe3 23.Ne4 Rg6 24.Ng5 Rg5 25.Kh4 Qf4 26.Kh3 Rh5 0–1. mic (2115) – darkslekke (2430), net–chess.com, 2008.

6.Ne2 ed3–/+ 7.Qd3 0–0 8.Ng3 a6 9.a4 (9.Nc3 Be6–/+) 9...Ng4 (better is 9...Nbd7!?–+) 10.Be2+= ab5 11.ab5 Ra1 12.Ba1 Qh4 13.Bg4 (worse is 13.Qd5 Ne3 14.fe3 Bg3 15.Kf1 Rd8+= (worse is 15...Bh2 16.Qd3+/–)) 13...Bg4 14.Qd5?? (better is 14.Nc3 Nd7 15.Nd5=) 14...Bb4–+ 15.c3 Rd8 16.Qb3 Rd1 17.Qd1 Bd1 18.Kd1 (18.cb4 Qb4 19.Nc3 Bc2–+) 18...Bd6 19.Ne2?? (19.Nd2 Bg3 20.fg3 Qg4 21.Kc1–+) 19...Qa4 20.Kd2 Qa2 (20...Qa2 21.Kc1 Qe2–+) 0–1. Mantau,Jan (2085) – Hohlstein,Walter (2080), RSX7E – A00 – Sokolsky–1, 2008.

6.de4 de4 7.Nd2 Bf5 (7...Nbd7 8.Ne2+=) 8.h3 (8.Nc4 Bb4 9.c3 Qd1 10.Rd1 Bc5=) 8...h5 (8...Nbd7 9.Ne2+=) 9.c4 (9.Nc4!?=) 9...Nbd7+= 10.Ne2 (10.Qc2+=) 10...0–0 (10...Nc5 11.Nc3+=) 11.Nd4= Bg6 12.Be2 Nc5 (12...Qe7 13.a4=) 13.0–0 Re8 (13...Qe7 14.N4b3=) 14.a4 (14.N4b3 a6+=) 14...Be5 (14...Qe7 15.N4b3=) 15.N2b3 Nb3 16.Qb3 (16.Nb3?? Bb2 17.Rb1 Be5–+) 16...Nd7 17.Rad1 (17.Rfd1 Nc5 18.Qb4 Qg5=) 17...Qf6 (17...Nc5 18.Qc2 Qf6 19.Rd2=) 18.Qb4 a6 (18...c5 19.bc6 bc6 20.f4 ef3 21.Bf3+= (worse is 21.Nf3 Bb2 22.Rd7 Qe6–/+)) 19.Rd2 (19.f4 ef3 20.Bf3 Qg5 21.Bb7 Qe3 22.Kh1 Be4 23.Be4 Qe4+=) 19...a5 (19...Bd6 20.Qb3=) 20.Qa3+= Bd6 21.Qa1 Ne5 (21...Qe5 22.g3=) 22.Nc2 (22.f4 ef3 23.Nf3 Qe6+=) 22...Qg5= 23.Rd5 Bf5?? (23...f6!?=) 24.h4 (24.Be5!? Bh3 25.Bg3 f5+–) 24...Qh4? (better is 24...Qe7 25.Rfd1 Bg4 26.Bg4 Ng4 27.Rh5 Bh2 28.Kf1 Be5 29.Be5 Ne5+=) 25.Be5+– (25.Re5?! Be5 26.Be5 Bg4 27.Bg4 Qg4 28.Bc7 Re7+–) 25...Re5 (25...Be5 26.Re5 Bg4 27.g3+–) 26.Re5 f6 27.g3 Qg5 (27...Qh3 28.Rf5! Qf5 29.Qa2+–) 28.Rf5! Qf5 29.Nd4 (29.Qa2 Kh8+–) 29...Qh3 30.Qb2?? (better is 30.Rc1!? h4 31.Bf1+–) 30...h4 (30...Bg3!? 31.fg3 Qg3 32.Kh1 Qh3 33.Kg1 Qg3 34.Kh1 Qh3 35.Kg1 Qg3=) 31.Bd1 (31.c5 hg3 32.Bc4 Kh8+/–) 31...hg3+= 32.fg3?? (32.f3 Kf7 33.Qg2 (33.fe4?! g2 34.Qg2 Qe3 35.Qf2 Qg5 36.Qg2 Qe3 37.Qf2 Qg5 38.Qg2 Qe3=) 33...Qh2 34.Qh2 gh2 35.Kg2+–) 32...Qg3–+ 33.Qg2 Qe3 34.Qf2 (34.Kh1 Qd4 35.c5 Bc5=) 34...Qg5 35.Qg2 Bc5 36.Qg5 Bd4 (36...fg5 37.Bh5 Bd4 38.Kg2–+) 37.Kg2 fg5 38.Bb3 (38.Bh5 e3 39.Bf7 Kf8 40.Bd5 Ke7 41.Bb7–+) 38...Bc5 39.Rf5 Be3 (better is 39...b6!?–+) 40.Re5–/+ Rf8 (40...Rd8 41.Re4 Rd3 42.Bc2 Rd2 43.Kf3 Rc2 44.Ke3–+) 41.Re4 (41.c5 Kh7 42.Bd5 Rf2 43.Kg3 Kg6–/+) 41...Bf4 (41...Bc5 42.Re5 b6 43.Rg5–/+) 42.c5 Kh7 43.Kh3 (43.Re6 Rf6+=) 43...Rf6 (43...Rd8 44.Bc2 Kg8 45.Kg4–/+) 44.Kg4+= Rh6 (44...Kh6 45.Re6+=) 45.Re2 (45.Re8 g6 46.Re7 Kh8+=) 45...Kg6 (45...Rh4 46.Kf5–/+) 46.Bc2 (better is 46.Re6!? Kh7 47.Re2=) 46...Kf6–/+ 47.Kf3 (47.b6 Rh4 48.Kf3 c6–+) 47...Rh3 (47...c6 48.Be4 Rh3 49.Kg2 Rg3 50.Kf1–+) 48.Ke4 Rc3 (better is 48...c6–/+) 49.Bd3? (better is 49.Kd4 Rf3 50.Re8–/+) 49...Rc5–+ 50.Rc2 (50.Kd4 Rc1–+) 50...Re5 51.Kf3 (51.Kd4 Be3 52.Kc3–+) 51...Re3 52.Kg4 (52.Kf2 Rd3 53.Rc4–+) 52...Rd3 1–0. DEFFM – itbegins, freechess.org, 2016.

5.d3 Be7

6.Ne2 Bd7 7.de4 de4 8.Nd4 0–0 9.Bc4 c6 10.bc6 Nc6 11.0–0 Ne5 12.Bb3 Qc7 13.Nc3 Neg4 14.g3 Ne5 15.Nd5 Nd5 16.Bd5 Bc6 17.Bc6?? bc6–/+ 18.Kg2 Rab8 19.Nb3 Nc4 20.Bc3=+ Nb6 21.Qh5 Nd5 22.Be5 Bd6 23.Bd6 Qd6 24.Rfd1 Qf6 25.Rd4 Nb4 26.Re4= Rb5 27.Qh4 Qh4 28.Rh4 Nc2 29.Rc1 Nb4 30.Nd4 Rb6 31.a3 Nd3 32.Rc6 Rb2= 33.Rc2?? Ne1–+ 34.Kh3 Nc2 35.Nc2 Rc2 36.Rf4 Ra2 37.Ra4 Rf2 38.Ra7 Ra2 39.a4 h6 40.a5 Re8 41.a6 Re3 42.Ra8 Kh7 43.a7 Rea3 (43...Rea3 44.Rd8 Ra7–+) 0–1. kinderchocolate – ghorn (2165), net–chess.com, 2010.

6.Ne2 Bf5 7.Ng3 Bg6 8.h4 h5 9.d4 Qd6 10.Ba3 Qd7 11.Bb2 Bd6 12.a4 Qe7 13.c4 c6 14.Ne2 Nbd7 15.c5 Bc7 16.Qd2 Ng4 17.Na3 Qf6 18.Nf4 Bf4 19.ef4 0–0 20.Be2 Qe6 21.0–0 Qe7 22.Nc2 Qh4 23.Bg4 Qg4 24.Bc1 Nf6 25.Qe3 Qf5 26.Nb4 Ng4 27.Qg3 Rfe8 28.bc6 b6 29.c7 Qf6 30.Nd5 Qd4 31.Nb6 ab6 32.cb6 Qa1 33.b7 Qa4 34.c8Q Rac8 35.bc8Q Rc8 36.f3 ef3 37.Qf3 Qd4 38.Kh1 Be4 39.f5 Bf3 40.gf3 Ne3 0–1. trutmo – charlin, internet, 2013.

6.de4 0–0 7.e5 Ne4= 8.Bd3 Bf5 9.Nf3 c6 10.bc6 Nc6+= 11.0–0 Qb6 12.Bd4 Nd4 13.Nd4 Qg6 14.Nf5 Qf5+= 15.Be4 de4=+ 16.f3 Qe5 17.Nd2 Bc5 18.Qe2 Rad8?? 19.f4 Qc3–/+ 20.Ne4 Be3 21.Kh1=+ Qd4 22.Ng3 Bf4–/+ 23.Rad1 Qe5 24.Qe5? Be5–/+ 25.Rd8 Rd8–+ 26.Ne4 Rf8 27.g3 f5 28.Nc5–/+ Rf7 29.Rd1 h6 30.c4 f4 31.Nd7 Bc7 32.gf4 Bf4 33.Nc5 b6 34.Na6 Rf5 35.Rd8 Kh7 36.Nb4 Rh5–+ 37.Nd5 Bh2 38.Kg2 Be5 39.Rd7? Rg5 40.Kf3 h5 41.Ra7–/+ h4 42.Nb6?? h3 43.Rd7 h2 44.Rd1 Rg1 (44...Rg1 45.Rg1 hg1Q–+ (45...hg1B?! 46.Nd7 Bd6 47.Ke4–+; 45...hg1N?! 46.Ke4 Bf6 47.a4–/+)) 0–1. pinecrest1981 – inconsistence, Live Game Caissa's Web, 2006.

6.de4 de4 7.Qd8 Bd8 8.c4 0–0 9.Nc3 Bg4 10.h3 Be6 11.Rc1 Nbd7 12.h4 Nb6 13.Nb1 Be7 14.Nh3 h6 15.Nf4 Bg4 16.Be2 Bf5 17.Bd4 Bb4 18.Kf1 Nbd7 19.a3 Bc5 20.Bb2 c6 21.a4 Rad8 22.Rc3 Ng4 23.Bc1 Nde5 24.f3 ef3 25.gf3 Nf6 26.e4 Ne4 27.fe4 Be4 28.Rhh3 Bb1 29.bc6 bc6 30.Bb2 Bf5 31.Rb3 Bh3 32.Rh3 Bd4 33.Ba3 Rfe8 34.Rg3 c5 35.Nh5 1–0. andrus9 – bolek1410, internet, 2013.

6.de4 de4 7.Qd8 Bd8 8.Ne2 0–0 9.c4 c6 10.a4 Be6 11.Nd4 Re8 12.Ne6 Re6 13.Be2 Nbd7 14.Nd2 Ba5 15.Bc1 Rd8–/+ 16.0–0 Nc5 17.Rd1 Red6–+ 18.Ba3 b6?? 19.Bc5= Rd2 20.Be7+= Rd1 21.Rd1 Rd1 22.Bd1 Nd7?? 23.bc6+– (23.bc6 b5 24.cd7 bc4 25.Be2+–) 1–0. hal1958 – ArieRoos, playchess.de, 2002.

5.d4 a6

6.a4 ab5 7.ab5 (7.Bb5 c6 8.Be2 Be6 9.c3–/+) 7...Ra1 8.Ba1 Bd6 (8...Bg4 9.Be2–/+) 9.c4 dc4 10.Bc4 0–0 (10...Nbd7 11.Ne2+=) 11.Ne2 Nbd7 12.Ng3 (12.Nbc3 Nb6 13.Bb3 Re8+=) 12...Nb6 13.Be2 Be6 14.0–0 (14.Nd2 Bg3 15.hg3 Qd7+=) 14...Bg3 15.hg3 Qd7 16.Qc2 Ra8 17.Bb2 (17.Nc3 Bc4+=) 17...Bg4 (17...Nbd5 18.Nd2 Nb4 19.Qb1+=) 18.Nc3 (18.Bg4 Ng4 (worse is 18...Qg4 19.Qc7 Nfd5 20.Qb7+=) 19.Qe4 Qb5 20.Qg4 Qb2+=) 18...Be2–/+ 19.Qe2 Qf5 (19...Nbd5 20.Ra1 Ra1 21.Ba1+=) 20.Ra1+= Ra1 21.Ba1 Qe6 22.Qa2 (22.Qb2 Nbd5+=) 22...Qa2 23.Na2 Nfd5 24.g4 Nc8 25.Nc3 Nc3 26.Bc3 b6 27.f3 ef3 (27...Na7 28.fe4 Nb5 29.Bb4+=) 28.gf3 Kf8 (28...Nd6 29.d5+=) 29.d5 (29.e4 Na7=) 29...Nd6 (29...Na7 30.e4=) 30.g5 (30.e4!? Nb5 31.Bb2+=) 30...Nb5–/+ 31.Bb2 (31.Bb4 Ke8–/+) 31...Nd6 (31...h6 32.gh6 gh6 33.e4–/+) 32.Kf2 (32.e4 Nc4 33.Bc3 h5–/+) 32...h5 (32...h6 33.gh6 gh6 34.e4+=) 33.gh6 gh6 34.Bf6 (34.e4 b5–/+) 34...b5 35.e4 Ke8 36.Ke3 h5 (36...Kd7 37.Kd4 Nb7 38.Ke5–/+) 37.Kd3 (37.Kd4!?+=) 37...Kd7–/+ 38.Kc3 (38.Kd4 Ne8 39.Bh4 c6–/+) 38...c6 (38...c5 39.dc6 Kc6 40.Be7–+) 39.dc6 (39.Kb4 Ne8 40.Bg5 cd5 41.ed5 Kd6–+) 39...Kc6 40.Bg5 Kd7 41.Bh4 (41.Kd4 Ke6–+) 41...Ke6 42.Bf2 Nc8 (42...f5 43.Kd4–+) 43.Kd4 (43.Kb4 Ke5 44.Bg3 Kd4 45.Bf2 Kd3–+) 43...Ne7 44.f4 f5 45.Bg3 (45.ef5 Kf5 46.Kc5–+) 45...fe4 46.Ke4 b4 47.Be1 (47.Kd3 Kf5 48.Be1 Nc6–+) 47...b3 (47...b3 48.Kd3 Nd5–+) 0–1. Haznedaroglu,Kivanc (1990) – Bjazevic,Pavao, corr ICCF WSTT/3/06/3, 2006.

6.a4 c6 7.c4 ab5 8.ab5 Ra1 9.Ba1 Bb4 10.Bc3 Bc3 11.Nc3 0–0 12.c5 Ng4 13.h3 Nf6 14.b6 Na6 15.Ba6 ba6 16.Nge2 h6 17.0–0 Nh7 18.Qa4 Bb7 19.Na2 f5 20.Nb4 Qa8 21.Ra1 Ng5 22.Na6 Qd8 23.Nb4 Qe7 24.Nc6 Qf6 25.Ne5 Ra8 26.Qd1 Re8 27.Ra7 Re7 28.Qa4 Nf3 29.Nf3 ef3 30.gf3 1–0. popovicigelu – bjargjo, internet, 2013.

6.Nc3 ab5 7.Bb5 c6 8.Bf1 Bd6 9.Nge2 0–0 10.Ng3 Ng4 11.Be2 Qh4 –+.

6.c4 ab5 7.cb5 Bd6 8.Nc3 c6 (8...0–0 9.Nge2–/+) 9.Nh3 (9.Nge2 0–0–/+) 9...Bh3 10.gh3 0–0 11.Bg2 cb5 12.Nb5 (12.Qb3 Nc6–/+) 12...Qa5 13.Qd2?? (better is 13.Nc3–/+) 13...Qb5–+ 14.a4 Ra4 15.Qe2 (15.Ra4 Qa4 16.0–0–+) 15...Ra1 16.Ba1 Qb1 (16...Qb1 17.Qd1 Bb4 18.Ke2 Qa2 19.Kf1 Rc8–+) 0–1. Tiedemann,Joern (2125) – Hoffacker,Detlef (2210), RSX – Senioren–1, 2007.

5.d4 Bb4

6.c3 Ba5 7.Qa4 Bb6 8.c4 dc4 9.Bc4 0–0 10.Nd2 Bd7 11.Qc2 Re8 12.a4 Ba5 13.Ne2 a6 14.Bc3 ab5 15.ab5 b6 16.Ba5 ba5 17.0–0 Qe7 18.Nc3 Bf5 19.Nd5 Nd5 20.Bd5 Ra7 21.Qc3 a4 22.Qc4 a3 23.Qb3 Nd7 24.Ra2 Nb6 25.Bc6 Rd8 26.Rfa1 Be6 27.d5 Nd5 28.Ra3 Nb4 29.Qc3 Ra3 30.Ra3 Nc6 31.bc6 Rd2 32.Qd2 f5 33.Ra8 Kf7 34.h3 Qc5 35.Qd8 Qc6 36.Qf8 Kg6 37.Qe7 Qa8 38.Qe6 Kh5 39.Qf5 Kh6 40.h4 Qa1 41.Kh2 Qf6 42.Qe4 Qd6 43.g3 c5 44.Kg2 g6 45.Kf3 Kg7 46.Qf4 Qd1 47.Kg2 Qd7 48.Qe5 Kf7 49.Qc5 Qb7 50.Kh2 Qf3 51.Qc4 Kg7 52.Qd4 Kg8 53.Qd8 Kg7 54.Qe7 Kg8 55.Qe6 Kg7 56.Qe5 Kg8 57.Qf4 Qd5 58.g4 Qd2 59.Kg3 Qd1 60.e4 Qg1 61.Kf3 Qh1 62.Ke3 Qc1 63.Kf3 Qh1 64.Ke2 Qh4 65.e5 h5 66.e6 hg4 67.Qf7 Kh8 68.e7 Qg5 69.e8Q 1–0. popovicigelu – nikol11 (1650), internet, 2013.

6.c3 Ba5 7.Nd2 0–0 8.Nb3 Nbd7?? (better is 8...Bb6=+) 9.Na5+– (9...c5 10.Nb3+–) 1–0. MasterofDisaster – Drusome111, Live Game Caissa's Web, 2004.

5.d4 b6

6.c4 Bb7 7.Qb3 (7.Nc3 a6 (7...Bb4 8.Qb3 Qd6 9.a3 Ba5 10.Be2 a6=; 7...c6 8.bc6 Nc6 9.cd5 Nd5 10.Ne4 Bb4+=; 7...dc4 8.Bc4 a6 9.Qb3 Qd7 10.Nh3 Bd6=) 8.Qc2 ab5 9.cd5 Bd5 10.Bb5 c6+=; 7.cd5 Bb4 (7...a6 8.Nc3 Bb4 9.ba6 Bc3 10.Bc3 Ba6+=; 7...Bd5 8.Nc3 Bb4 9.Qa4 Ba5 10.Nh3 0–0+=) 8.Bc3 Be7 9.Bd2 0–0 10.Nc3 Nd5+=) 7...dc4 (7...a6!?+= 8.Be2 dc4 9.Bc4 Bd5 10.Nc3 Bc4+=) 8.Bc4= Bd5 (8...Qd7 9.Nh3 Bd5 10.Nc3 Bc4+=) 9.Nc3 Bc4 10.Qc4 Qd6 (10...Bd6=) 11.Nge2 Nbd7 (11...c6 12.Ng3 Qb4 13.Qe2+=) 12.h3 (12.Ng3 a6+/–) 12...Rc8 13.a4 (13.a3!?+/–) 13...Qb4= 14.Qb4 Bb4 15.0–0 0–0 16.Ba3 Ba3 17.Ra3 c5 18.Rc1 cd4 19.Nd4 Ne5 20.Nce2 Rc1 21.Nc1 Rc8 22.Nce2 ½–½. Bittner – Freuwoert, corr, 1987.

5.d4 c6

6.a4 Bd6 7.c4 0–0 8.c5 Bc7 9.Ne2 Bg4 10.h3 Bh5 11.Qc2 Qe7 12.Nec3 g5 13.Be2 Be2 14.Ke2 h5 15.Nd2 Kg7 16.Rag1 Ba5 17.Nb3 Bc3 18.Bc3 Nbd7 19.f3 ef3 20.gf3 Kh6 21.Qf5 Nh7 22.f4 f6 23.Nd2 Rae8 24.Nf1 Nc5 25.dc5 Qc5 26.Bf6 Rf6 27.fg5 Ng5 28.Qg5 Kh7 29.Qg7 1–0. popovicigelu – rogik, internet, 2013.

6.a4 Be7 7.Na3 0–0 8.c4? (8.Qd2 Be6–/+) 8...Be6?? (better is 8...Qa5!? 9.Ke2 cb5 10.ab5 dc4–+) 9.c5 h6 (9...Qa5 10.Qd2 Qd2 11.Kd2–/+) 10.h3 (10.Ne2 b6=) 10...Nh7 (10...Qa5 11.Qd2 Qd2 12.Kd2–/+) 11.Nc2 (11.Ne2 b6=) 11...Ng5 (11...Qa5 12.Qd2 Qd2 13.Kd2–/+) 12.h4 (12.Ne2 Nd7=) 12...Nh7 13.g3 (13.Ne2 b6=) 13...f5 (13...Qa5 14.Qd2 Qd2 15.Kd2–/+) 14.Nh3 Nd7 (14...Qa5 15.Qd2 Qd2 16.Kd2=+) 15.Be2 (15.Nb4 Rc8=) 15...Nhf6 (15...Qa5 16.Qd2 Qd2 17.Kd2=+) 16.f4 (better is 16.Nb4 Qc8 17.Nf4=) 16...ef3–/+ 17.Bf3 Ne4 18.Nf4 Ng3?? (better is 18...Qa5 19.Kf1 Bf7–/+) 19.Ne6+– Qe8 (19...Qa5 20.Qd2 Qd2 21.Kd2 Nh1 22.Nf8 (22.Bh1?! Rfc8+–; 22.Rh1?! Rfc8+–) 22...Rf8 23.Rh1+–) 20.Rg1 (better is 20.Rh3 Ne4 21.Be4 de4 22.Nf8 Kf8+–) 20...Bh4 21.Nc7 Qe7 22.Kd2?? Ne4?? 23.Kc1?? Rac8+= 24.b6?? ab6–+ 25.cb6 Rc7?? 26.bc7 Nb6 27.Ba3 Qc7 28.Bf8 Kf8 29.a5 Nc4 30.a6 ba6 31.Ra6 Qb7 32.Be4?? Qa6 33.Bf5+– Qa2 34.Qh5 Qb2 35.Kd1 Qb1 36.Ke2 Qg1 37.Qh4 Qg2 38.Qf2 Qg5? 39.Bd7?? Kg8 40.Bc6 Nb2?? 41.Nb4 Qg6 42.Bd5 Kh7 43.Qf7 Qg4 44.Qf3 Qg6 45.Be4 Qe4 46.Qe4 Kh8 47.d5 h5 48.d6 Nc4 49.d7 h4 50.d8Q 1–0. MasterofDisaster – 09phypeach, Live Game Caissa's Web, 2004.

5.d4 Bd6

6.c4=+ 0–0 7.Qc2 a6 (7...c6 8.Nc3=+) 8.c5 (8.cd5 Bb4 9.Bc3 Nd5 10.Bb4 Nb4=+) 8...Be7 9.a4 Bg4 10.Be2 ab5 11.ab5 Ra1 12.Ba1 Nbd7 (12...Qd7 13.Nc3=+) 13.Bg4 Ng4 14.Nc3 Qa8 (14...Ndf6 15.Nge2=+) 15.Bb2= b6 (better is 15...c6=) 16.c6+/– Ndf6 17.h3 Nh6 18.g4 Ne8 19.Nd5 Bd8 (19...Bh4 20.Ne2+/– (20.Qe4?! Qa2=)) 20.Ne2 (20.Bc3 Nd6 21.Bb4 Re8 22.Bd6 cd6+–) 20...Qa5 (20...Nd6!?+/–) 21.Nec3+– Nd6 22.0–0 Qa8 23.Ra1 (< 23.Ne4 Nb5 24.Ra1 Qc8+–) 23...Qc8 24.Ba3 (< 24.Ne4 Nb5 25.Nd2 Qe6+–) 24...Ng4 (24...f5 25.Nb6! cb6 26.Bd6+–) 25.Bd6 cd6 26.Ne4 (26.c7 Nf6+–) 26...Nf6 27.Nef6 Bf6 28.Kh2 1–0. Bothe – Bendig,Frank, corr, 1994.

6.c4 dc4 7.Bc4 0–0 8.Ne2 (8.Ba3 a6 9.Bd6 cd6 10.Nc3 d5+=) 8...a6 (8...c6 9.Nbc3 a6 10.a4 Qc7=) 9.ba6 (9.Nbc3 c6 10.a4 b6+=) 9...Na6 (worse is 9...Ra6 10.Ba6 Na6 11.Ba3+/–; 9...b6 10.a7 Ra7+=) 10.Nbc3 Bf5 (10...c6+=) 11.0–0? (better is 11.Ng3 Bg6 12.Qb3=) 11...Bh2!–+ 12.Kh2? (better is 12.Kh1 Ng4 13.g3 Bg3 14.fg3–+) 12...Ng4 13.Kg3 Qg5 14.Ne4 Be4 15.f4 Qg6 16.f5 Qg5 (16...Qg5 17.Qb3 Nh2 18.Kf2 Qg2 19.Ke1 Qf1 20.Kd2 Nf3 21.Kc3 Qf2–+) 0–1. Steingraeber,Barbara (1675) – Burgau,Thomas (1815), DESC, 2002.

6.c4 dc4 7.Bc4 c6 8.a4 cb5 9.ab5 0–0 10.Ne2 a6 11.0–0 ab5 12.Ra8 bc4 13.Nd2 Na6 14.Nc4 Nd7 15.Nd6 Nb6 16.Ra7 Qd6 17.Qb3 Qb8 18.Qb6 Re8 19.Ra6 Re6 20.Qa7 Qa7 21.Ra7 Re8 1–0. popovicigelu – krwo27, internet, 2014.

6.c4+= dc4 7.Bc4 Nbd7 8.Nd2 Nb6 9.Bb3 0–0 10.Bc2 (10.Qc2 Re8+=) 10...Re8 (10...Qe8 11.a4–/+) 11.Ne2+= Bg4 12.f3? (better is 12.h3!? Bh5 13.Qb1 Be2 14.Ke2+=) 12...ef3–+ 13.gf3 Re3?? (13...Nfd5 14.Bh7 Kh7 15.Qb1 Kg8 16.fg4 Ne3 17.Nf3–+) 14.0–0?? (14.fg4 Ng4 15.0–0 Bh2 16.Kh1–+) 14...Bh3–+ 15.Rf2 Nh5 (15...Qd7 16.Ne4 Ne4 17.Be4 Qb5–/+) 16.Ne4–/+ Nd5 (16...Nf4!?–/+) 17.Bc1+= Re2 (17...Qd7 18.Bb3 Rb3 19.Qb3+=) 18.Qe2 (18.Re2 Nhf4 19.Bf4 Nf4=) 18...Bf4 (better is 18...Nhf4 19.Bf4 Bf4+= (worse is 19...Nf4 20.Qe3+=)) 19.Rg2?? (better is 19.Bb3=) 19...Bc1–+ (worse is 19...Bg2 20.Qg2 Nb4 21.d5–+) 20.Rc1 Ndf4 21.Qc4 (21.Rg7 Ng7 22.Qd2 Ngh5–+) 21...Bg2 (worse is 21...Ng2 22.Bb3 Nhf4 23.Qf7 Kh8 24.Rd1–+) 22.Bb3 (22.Bd1 Nf6 23.Nc5 N6d5–+) 22...Bf3 23.Qf7 (23.Re1–+) 23...Kh8 24.Ng3 (24.Qg8 Qg8 25.Bg8 Ne2 26.Kf2 Nc1 27.Bh7–+) 24...Qd4 25.Kf1 Plans Rc2 25...Ng3 26.hg3 Qd3 0–1. Pastrana Blanco,JL – Silva Martinez,F, Pasao, 1996.

5.Ne2 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nd4 c5 10.Nb3 Be6 11.Qc1 Qb6 12.c3 Be7 13.c4 0–0 14.Nc3 d4 15.ed4 cd4 16.Na4 Qa7 17.Nb2 d3 18.Nd1 Ng4 19.h3 Nf6 20.Ne3 Nbd7 21.Nd4 Bc5 22.Ne6 fe6 23.f4 Nh5 24.Qc3 Rf4 25.g4 Nhf6 26.Bg2 Be3 27.de3 Qe3 28.Kd1 Nc5 29.g5 Qe2 30.Kc1 Qg2 31.Rd1 Rf1 32.gf6 gf6 33.Rf1 Qf1 34.Kb2 e5 35.Ka3 Qb1 36.Bb2 e3 37.Kb4 d2 38.Kc5 d1Q 39.Ba3 Qd4 40.Qd4 ed4 41.Kd4 e2 42.Bd6 Qd1 43.Kc5 e1Q 0–1. ateistawolnyx – nikus1997b (1740), internet, 2014.

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Ng3 cb5 10.Bb5 Bd7 11.Nc3 Qa5 12.Bd7 Nbd7 13.0–0 Bd6 14.Nh5 Nh5 15.Qh5 Nf6 16.Qf5 0–0 17.Ne2 Be7 18.Bf6 Bf6 19.c3 Ra8 20.Nf4 Qa1 21.Qd5 Qb2 22.Nh5 Rd8 23.Nf6 gf6 24.Qd8 1–0. tuulevalja – old68, internet, 2013.

5.Ne2 c6

6.a4 a6 7.Nd4 ab5 8.ab5 Ra1 9.Ba1 Be7 10.Be2 c5 11.Nb3 0–0 12.0–0 b6 13.d3 ed3 14.cd3 Bd7 15.Nc3 h6 16.Qc2 Be6 17.Bb2 Qd7 18.Ra1 c4 19.Nd4 cd3 20.Bd3 Rc8 21.Ra6 Qc7 22.Ne6 fe6 23.Ra1 Bb4 24.Rc1 Qd7 25.h3 e5 26.Qb3 Bc3 27.Bc3 Kh8 28.Ra1 d4 29.ed4 ed4 30.Bd2 Rd8 31.Ra8 Qd5 32.Qd5 Nd5 33.Bc4 Nc7 34.Ra7 Nd5 35.Bd5 Rd5 36.Bf4 Nd7 37.Ra8 Kh7 38.Rd8 d3 39.Bd2 Nf6 40.Rd5 Nd5 41.Kf1 Nc7 42.Be3 Nb5 43.Bb6 Nc3 44.Be3 1–0. elsh1403 – xanadu, internet, 2014.

6.a4 cb5 7.ab5 Bd7 8.Nd4 Bc5 9.c4 Bd4 10.Bd4 dc4 11.Bc4 0–0 12.0–0 Bf5 13.Bb2 Qc7 14.Be2 Nbd7 15.d4 ed3 16.Bd3 Bd3 17.Qd3 Nc5 18.Qe2 Rad8 19.Nc3 Nb3 20.Rad1 Rd1 21.Rd1 Rd8 22.Rd8 Qd8 23.Qd1 Qd1 24.Nd1 Nc5 25.Bf6 gf6 26.Kf1 a6 27.ba6 Na6 28.Ke2 Kf8 29.Kd3 Ke7 30.Kd4 Kd6 31.Nc3 Nc5 32.Ne4 Kc6 33.Nc5 b5 34.Ne4 b4 35.Kc4 f5 36.Ng5 f6 37.Nh7 b3 38.Kb3 Kd5 39.Nf6 Ke5 40.Nh5 Ke6 41.Kc4 Kf7 42.Kd4 Kg6 43.Ng3 Kg5 44.Nf5 Kf5 45.f3 Kg5 46.g3 Kf5 47.h3 Kg5 48.Kd5 Kf5 49.e4 Kf6 50.e5 Kf7 51.Kd6 Ke8 52.f4 Kf8 53.f5 Ke8 54.e6 Kd8 55.f6 Ke8 56.h4 Kf8 57.Kd7 Kg8 58.e7 Kf7 59.e8Q Kf6 60.h5 Kg5 61.g4 Kh6 62.Qg6 1–0. kannisogoet – durak4, internet, 2014.

6.a4 Be7 7.Ng3 0–0 8.Be2= Nbd7 9.Nc3 Ne5 10.0–0 Bg4 11.h3 Be2=+ 12.Nce2 Nc4 13.Bc1 Bd6 14.Nf5 Be5–/+ 15.Rb1 Nd6 16.Nd6 Qd6 17.Rb3 Nh5 18.bc6 bc6 19.Ba3+/– c5 20.Nd4 Nf6= 21.Nb5 Qe7 22.d4 ed3 23.cd3 a6 24.Nc3 Qc7 25.d4 Bd6 26.Qb1 Rab8 27.dc5 Be5 28.Qd3?? Rb3–+ (28...Rb3 29.Nd5 Rd3 30.Nc7 Ra3 31.Na6 Ra4–+) 0–1. mic (2170) – amikhlin (2365), net–chess.com, 2009.

6.bc6 Nc6 7.Nf4 Bd6 8.c4 Bf4 9.ef4 0–0 10.d4 ed3! 11.Bd3 dc4 12.Be2 Nd5 13.0–0 Nf4 14.Bc4 Qg5 15.g3 Be6–+ 16.Be6 Ne6 17.Nd2 Rad8 18.Bc3 Rd7 19.Qc2 Ncd4 20.Qa4?? Ne2 21.Kg2 N6f4 22.Kh1 Qd5 23.f3 Nc3 24.Qf4 Qd2 25.Qd2 Rd2 26.Rfc1 Rc8 27.Kg1 Ne2 28.Kf1 Rc1 29.Rc1 Nc1 30.Ke1 Rh2 31.Kd1 Na2 32.Ke1 a5 (32...a5 33.Kf1 b5 34.Kg1 Rd2 35.Kf1 Nc3 36.g4 b4 37.g5 a4 38.g6 fg6 39.Ke1 Re2 40.Kf1 a3 41.f4 a2 42.f5 a1Q) 0–1. gtate (1710) – tsekhov (1700), net–chess.com, 2002.

6.Nd4 Bc5 7.a4 Bd7 8.Nb3 Bd6 9.Be2 Qb6 10.c4 dc4 11.Bc4 cb5 12.ab5 Bb5 13.Qc2 Nbd7 14.Bb5 Qb5 15.Nc3 Qb6 16.0–0 0–0 17.Rab1 Qc7 18.g3 Rac8 19.Rfc1 Qd8 20.Qd1 Be5 21.d4 Bd6 22.Ne2 Nb6 23.Rc8 Qc8 24.Rc1 Qd7 25.Nc3 Qh3 26.Qf1 Qh5 27.Nd2 Ng4 28.Qg2 a5 29.Nce4 Nd5 30.Nd6 b5 31.Nb5 Rb8 32.Rc5 Nb4 33.h3 Qg6 34.hg4 Qg4 35.Ba3 Nd3 36.Rc3 Qe2 37.Nf1 g6 38.Rb3 a4 39.Rb1 Qa2 40.Rb4 Nb4 41.Bb4 Rb5 42.Bc5 a3 43.d5 Rc5 44.f3 Qd5 45.e4 Qb3 46.Nd2 Rc2 47.Kh2 Qb2 48.Qf1 Rd2 49.Kh3 Rh2 50.Kg4 a2 51.f4 a1Q 52.Qd3 Qaa2 53.Qd8 Kg7 54.Kg5 Qe6 55.Qf6 Qef6 56.Kg4 1–0. kannisogoet – locasio, internet, 2014.

5.Ne2 Bd6

6.Nbc3!?+=.

6.c4 dc4–+ 7.Nd4 0–0 (7...Bg4 8.Qc2 0–0 9.Bc4+=) 8.Bc4 Bg4 9.Qc2 a6 10.Nc3 ab5 11.Ndb5 Be5 12.h3 Bd7 (better is 12...Bf5–/+) 13.Ne4?? (better is 13.d4 ed3 14.Qd3+=) 13...Ne4?? (better is 13...Bb2 14.Nf6 Bf6–+) 14.Be5+/– Bb5 15.Bb5 Qd5 16.Bh2 (16.Bc7 Nf2 17.Kf2 Qb5+/–) 16...Nf2 17.Kf2 Qb5 18.Qc7 (18.Rhb1 Qg5 19.Kg1 b5+=) 18...Na6 19.Qf4 Qd3 20.Rhd1 Nc5 21.Qb4 Ne4 22.Kg1 b5 23.Be5 Rfe8 24.Bd4 Qe2 25.Bc3 (25.a3 Qf2 26.Kh1 Qe2+=) 25...Ra6 (25...Ra2 26.Ra2 Qd1 27.Kh2 Nc3 28.Qc3=) 26.Kh2 (26.Rf1 Rg6 (worse is 26...Nc3 27.Qc3 Rd8 28.Qc7+=) 27.g4 Ng5–/+) 26...Rh6 (26...Nc3 27.Qc3 Ra2 28.Ra2 Qd1+=) 27.Re1?? (better is 27.Rac1+=) 27...Rh3!? 0–1. Abromeit,Guenter – Nittschalk,Karl, DESC, 2000.

6.c4 dc4 7.Ng3 a6 8.Nc3 Bg3 9.hg3 Be6 10.Qb1 Bd5 11.a4 0–0 (11...ab5 12.ab5 Ra1 13.Qa1+=) 12.Rh4 Pawn e4, live or die! (12.Nd5!? Qd5 13.Qc2=) 12...c6–/+ 13.bc6 bc6 (worse is 13...Nc6 14.Nd5 Qd5 15.Bf6 gf6 16.Rg4 Kh8 17.Re4+/–) 14.Qc2 a5 15.Ba3 Re8 16.Rb1 Nbd7 17.Be2 (17.Bd6 Re6 18.Bf4 h6–/+) 17...Ne5–+ 18.Kf1 Nd3 19.Kg1 Qd7 20.Nd1 Reb8 21.Bb2 Qf5 22.Bd4 Rb3 (22...Rb4 23.Bc3 Rb3 24.Rb3 cb3 25.Qb1–+) 23.Rb3 cb3 24.Qc3 Ne8 (24...Rb8 25.Bd3 ed3 26.f3–/+) 25.Bd3 ed3 26.e4 Be4 27.Qb3 Bd5 28.Qb1 g5 (28...Be6!?–/+) 29.Ne3= Qg6 30.Qb7 (30.Rh1 Be6=) 30...Rd8+= 31.Qb6 Rc8 (worse is 31...gh4 32.Qd8 Qe4 33.gh4+/–) 32.Rh3 Be6 33.g4 c5 34.Bc3 Nf6 35.f3 Nd5 36.Nd5 Bd5 37.Qa5 Qd6 38.Bb2 f6 39.Qc3 c4 (39...Bf7!?=) 40.Rh5+/– (worse is 40.Qf6 Qf6 41.Bf6 c3 42.Bc3 Rc3–/+) 40...Kf7 41.Rh6 Qb6 (41...Rc6!?+=) 42.Kf1+/– Rc6 43.Rh7 Kg6 44.Rh8 (44.Re7!?+=) 44...Qb3 45.Qb3 cb3 46.Kf2 Re6 47.Bc3 Rb6 48.Rh1 Re6 49.a5 Re2 50.Kg3 Re6 51.Rh8 (51.Ra1 Bc4+=) 51...Rc6 (51...Ra6 52.Kf2 Re6 53.Rd8+=) 52.Kf2+= Re6 53.Rb8 Kf7 54.Rb5 Bc4 55.Rb4 Bd5 56.Rd4 Rd6 57.Rd3 Ke6 58.Rd4 Ra6 59.Rb4 Kf7 60.Ke3 Re6 61.Kd4 Rd6 62.Kc5 Ke6 63.Rb8 Rc6 64.Kb4 Kf7 65.Kb5 Rc7 66.a6 Ke6 (66...Ke7 67.Rb6+–) 67.Rb6 Kd7 68.Bf6 (worse is 68.Rf6 Rc3 69.dc3 b2–/+) 68...Rc6 (68...Rc2 69.a7+– (69.Bg5?! b2 70.Ka4 Ba2+–)) 69.Rc6 (69.Bg5?? b2 70.Rc6 b1Q 71.Kc5 Bc6–+) 69...Bc6 70.Kc5 Ba8 71.Bd4 (71.Bg5? b2 72.Be3 b1Q–+) 71...Ke6 72.Kb6 1–0. Elschner,Gerald (2205) – Hohlstein,Walter (2080), RSX7E – A00 – Sokolsky–1, 2008.

6.Nd4 0–0 7.g3 c5 8.Nb3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.Bg2 Nb6 13.0–0 c4 14.Nd4 Be5 15.d3 cd3 16.cd3 Bg4 17.Qd2 ed3 18.Qd3 Nc4 19.Nd2 Nd2 20.Qd2 Ne4 21.Qb4 Be2 22.Ne2 Ba1 23.Ra1 Kh8 24.Be4 de4 25.Qe4 Qf6 26.Rf1 Qb6 27.Nd4 h6 28.Qe7 Kg8 29.Rc1 Qg6 30.Qb7 h5 31.Qc6 h4 32.Qg6 fg6 33.b6 Rb8 34.Rb1 g5 35.b7 Kf7 36.Nc6 1–0. kannisogoet – simona18, internet, 2014.

5.Ne2 Bd7

6.a4 a6 7.Ng3 ab5 8.ab5 Ra1 9.Ba1 Bb4 10.Nh5 Nh5 11.Qh5 0–0 12.Be2 Be6 13.0–0 Nd7 14.c3 Bd6 15.Bg4 Nf6 16.Qg5 Ng4 17.Qd8 Rd8 18.c4 Ra8 0–1. tuulevalja – qango, internet, 2014.

6.a4 Bd6=+ 7.c4. Brinkmann,Wilhelm – Rossbach, corr SOK–90–04, 1990.

6.a4 Bd6 7.Nf4=+.

6.a4 Be7 7.Nf4 c6 (7...0–0 8.Be2=+) 8.c4 (8.Be2 0–0=) 8...0–0=+ 9.Qb3 cb5 (9...dc4 10.Bc4 a6 11.ba6 Na6 A) 12.Qb7? Nc5 13.Qb4 Nd3 14.Nd3 Bb4 (< 14...ed3 15.Qc3+/–) 15.Nb4 Qb6–+; B) 12.d4=) 10.cb5 (10.Nd5 Nd5 11.cd5 ba4 12.Qb7 Qb6 13.Qb6 ab6=+) 10...Be6 11.Be2 (11.Nc3 Bd6 12.Ne6 fe6=+) 11...Qd7 (11...Nbd7 12.d4=+) 12.0–0= a6 (12...Rc8 13.d3=) 13.Nc3 (13.d3=) 13...g5 (13...Bd6!? 14.Ne6 fe6=) 14.Ne6+= Qe6 15.f4 (15.Rfc1 Nbd7+=) 15...h6 (15...gf4 16.Rf4 Rc8 17.Ne4 de4 18.Qe6 fe6 19.Bf6 (19.Rf6?! Bf6 20.Bf6 ab5 21.Bb5 Rc2=) 19...Bf6 20.Rf6 ab5 21.Bb5+–) 16.fg5+/– hg5 17.Ba3 (17.a5 Rc8+/–) 17...Ba3+= 18.Qa3 Nbd7 19.Rf2 (19.a5 Rfc8+=) 19...Kg7 (19...g4 20.a5+=) 20.Raf1 Rh8 21.a5 Rh6 (22.Rf5 Kg6+=; 21...g4 22.Rf5+=). Deforel – Krolik, corr 3GMM–36, 1997.

6.Nf4 c6=.

6.Nf4 Be7=.

5.Ne2 Nbd7

6.Nbc3 Bd6 7.Ng3 0–0 8.Be2 a6 9.ba6 b6 10.0–0 Ba6 11.Nf5 =.

6.Nd4 Nc5 7.Be2 Ne6 8.Nb3 h5 9.d3 Nc5 (9...Bb4 10.Nc3=) 10.Nc5 Bc5 11.de4 Ne4 12.Bf3 (12.Bg7? Rg8 13.Be5 Rg5–+) 12...Qg5 13.h4 Qf5 14.Bd4 Bb4 15.c3 Bd6 16.Nd2 Rh6 (16...0–0!?+=) 17.Bg7 Rg6 18.Bd4 c5 19.bc6 bc6 20.c4 (better is 20.a3!?+=) 20...Bb4+= 21.Be4 de4 22.Kf1? (22.Qc2 Rg2 23.0–0–0 Rf2+=) 22...Rd6?? (better is 22...c5 23.Bb2 Rd6–+) 23.c5 Bc5 24.Bc5 Qc5 25.Qe1 Qd5 26.Nb3 a5 27.Kg1 Bg4 28.Nd4 Rg6 29.Ne2 Rd8 (better is 29...Be2 30.Qe2 Rb8+=) 30.Nf4+/– Qf5 (30...Qe5!? 31.Ng6 fg6+/–) 31.Ng6+– Qg6 32.Qa5 Qf6 33.Rb1 Rd5 34.Qa8 Ke7 35.Qb7 Bd7 (35...Kf8 36.a4+–) 36.Qb4 c5 37.Qe4 Be6 38.Rb7 (38.Rh3!? Qe5 39.Rb7 Kf8 40.Qe5 Re5+–) 38...Kf8 39.Rb8 Kg7 40.Qf4 Bg4?? (40...Qf4 41.ef4 c4+–) 41.Rg8! (41.Rg8 Kg8 42.Qf6+–) 1–0. Petrochenko,Maria (1995) – Kruglikova,Viktorija (1940), TCh–RUS Junior, 2015.

5.Ne2 Be7

6.a4 0–0 7.Ng3 c6 8.Be2 cb5 9.ab5 a5 10.0–0 Nbd7 11.d3 ed3 12.cd3 h6 13.Nc3 Nb6 14.Na4 Nfd7 15.Nb6 Nb6 16.Nh5 g6 Black prepares the advance a4 17.Nf4 Bf6 18.Qd2 Bb2 19.Qb2 Qd6 20.Qd4 The isolani on d5 becomes a target 20...a4 21.Bd1 a3 22.Bb3 Increasing the pressure on the isolated pawn on d5 22...Rd8 23.Rfc1 Bf5 24.f3 Ra5 25.Rc5 The pressure on the isolated pawn grows 25...Be6 26.Rac1 Re8 (26...a2 27.R5c2 Rc8 28.Rc8 Bc8=) 27.Rc7 (better is 27.Ne6!? Qe6 28.e4+=) 27...Rb5+= 28.Ng6 Kh7 29.Ba4 Na4 30.Qf6 (30.Qa4? Bd7 31.Rd7 Qd7–+) 30...Qc7 31.Rc7 Rb1 32.Kf2 Rb2 33.Ke1 Rb1 34.Kd2 Rb2 (34...Rg8 35.Qe6 Rg7 36.Rf7 Rb2 37.Kc1 Rg2 38.Nf8 Kh8 39.Qh6 Kg8 40.Rg7 Rg7 41.Ng6+–) 35.Kc1 Rg8 36.Qe6 Rg7 37.Rf7 Rg2 38.Nf4 (38.Nf8!? Kh8 39.Qh6 Kg8 40.Rg7 Rg7+–) 38...Rg1 39.Kc2 a2 40.Qf5 Kh8 41.Rf8 Rg8 42.Qf6 (42.Rg8 Rg8 43.Qf6 Kh7+–) 42...Kh7 43.Rf7 R8g7 44.Rg7 (44.Nd5?! a1N 45.Kd2 Nb3 46.Ke2 Nc1 47.Kf2 R1g2 48.Kf1 Rg1 49.Kf2 R1g2 50.Kf1 Rg1 51.Kf2=) 44...Rg7 45.Kb3 a1Q 46.Qa1 (46.Qa1 Nc5 47.Ka3+–) 1–0. Schlaeger,Michael (2270) – Hohlstein,Walter (2080), RSX7E – A00 – Sokolsky–1, 2008.

6.Nd4 c6 7.c4 Be6 8.cd5 Bd5 9.a4 cb5 10.ab5 0–0 11.Nc3 Nbd7 12.Be2 Nc5 13.d3 ed3 14.Bd3 Nd3 15.Qd3 Bg2 16.Rg1 Bh3 17.0–0–0 Qa5 18.Nb3 Qb4 19.Qc2 Rac8 20.Rg3 Be6 21.Nd4 Ne4 22.Rd3 Nc3 23.Bc3 Qa3 24.Kd2 Bb4 25.Bb4 Rc2 26.Kc2 Qb4 27.Rc3 Qa4 28.Kd2 Rd8 29.Ke2 Bc4 30.Kf3 Bd5 31.Kf4 Qa2 32.Rc2 Qa3 33.e4 Qd6 34.Ke3 Be6 35.Rd2 1–0. kannisogoet – karelpavlik, internet, 2013.

6.Nf4 0–0 7.a4 c6 8.Be2 h6 9.0–0 Nh7 10.Nh5 Bf6 11.Bf6 Nf6 12.Nf6 Qf6 13.Nc3 Qg6 14.bc6 bc6 15.a5 Bh3 16.Bf3 Nd7 17.d3 Ne5 18.de4 Nf3 19.Qf3 Bg4 20.Qf4 de4 21.Ne4 Bf5 22.Nc5 Be4 0–1. tuulevalja – raidden, internet, 2014.

6.Nf4 0–0 7.Nh5 Bg4 8.Nf6 Bf6 9.Qg4 Bb2 10.Be2 Ba1 11.0–0 f5 12.Qf4 Bf6 13.d4 ed3 14.Bd3 g6 15.c4 c6 16.cd5 cd5 17.Nc3 Bc3 0–1. tuulevalja – diego7314, internet, 2013.

6.Ng3 0–0 7.Be2 a6 8.a4 Re8 9.0–0 c5 10.f3 d4 (10...ef3 11.Bf3 Be6 12.Nc3=) 11.fe4 de3 12.d3 ab5 13.ab5 Ra1 14.Ba1 Qa5 15.Nc3 (15.Be5 Nfd7 16.Bf4 Qb5+=) 15...Bd6= 16.Nf5 Bf5 17.Rf5 Nbd7 (17...Be5 18.Na4 Ba1 19.Qa1–/+) 18.Qe1 (18.Nd5!? Nd5 19.Rd5=) 18...Be5 19.Re5 (19.Bb2!?–/+) 19...Ne5–+ 20.Bb2 Ng6 (20...Qb4!? 21.Qc1–+) 21.Qg3 Qb4 22.Ba1?? (better is 22.Nd1–/+) 22...Qa3 23.Qe1 Ra8 24.Na4 Qa4 25.Bc3 (25.Bf6 gf6 26.Bf1 Qc2 27.Qe3–+) 26...Qc2 0–1. Otte,Marco – Wiersma,Co, Wag.Intcomp, 1997.

6.Ng3 0–0 7.Be2 h6 8.h3 Nbd7 9.0–0 Nc5 10.a4 a6 11.Nc3 c6 12.Re1 ab5 13.ab5 Ra1 14.Qa1 Bd7 15.Qa7 Qa8 16.Ra1 Qa7 17.Ra7 cb5 18.Nb5 Bc6 19.f4 ef3 20.gf3 Re8 21.Ba3 Ne6 22.Be7 Re7 23.Ra8 Kh7 24.Bd3 g6 25.h4 d4 26.h5 Bf3 27.hg6 fg6 28.Nd6 b6 29.Rb8 de3 30.de3 Nc5 31.Rb6 Nd3 32.cd3 Re3 33.Nge4 Ne4 34.de4 Be4 35.Ne4 Re4 36.Kf2 h5 37.Kg3 Rg4 38.Kh3 Kh6 39.Rb5 Rf4 40.Rc5 Rf5 41.Rc8 Kg5 42.Rg8 h4 43.Rg7 Rf3 44.Kg2 Rg3 45.Kh2 Kh5 46.Rh7 Kg4 47.Rg7 g5 48.Rg8 h3 49.Rg7 Rg2 50.Kh1 1–0. ventil (1610) – abravo, internet, 2014.

6.Ng3 Bg4 7.Be2 Be2 8.Qe2 0–0 9.0–0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nfd7 13.Qg4 Bf6 14.Bf6 Nf6 15.Qg5 c6 16.Nf5 g6 17.Nh6 Kh8 18.Nc3 Nfd7 19.b6 Qg5 0–1. tuulevalja – ojhapa, internet, 2014.

5.Ne2 Bg4

6.Qc1 Bd6 7.h3 Bd7 8.a4 0–0 9.Nbc3 c5 10.d3 ed3 11.cd3 a6 12.Nf4 (12.d4 c4+=) 12...Bf4–/+ 13.ef4 Black creates threats along the open e–file 13...Re8 14.Be2 ab5 15.ab5 (15.Nb5 Bb5 16.ab5 Ra1 17.Qa1 d4–/+) 15...Ra1 16.Ba1 d4 17.Nd1 (17.Ne4 Qa5 18.Kd1 Qa4 19.Kd2 Re4 20.de4 Ne4 21.Ke1 Qa5 22.Kf1 Nd2 23.Kg1 Nb3–+) 17...Nd5 18.Kf1 Qe7 19.Qd2 Nf4!! 20.Bf3 (20.Qf4 Theme: Deflection from e2 20...Qe2 Annihilates a defender: e2) 20...Nd3!! Do you see the mate threat? 21.g3 (21.Qd3 Theme: Deflection from e1 21...Qe1 Theme: Double Attack) 21...Bb5 22.Kg2 (22.Be2 Nc6 23.Rh2 Qe2 24.Qe2 Re2 25.Ke2 Nde5 26.Kd2 Nf3 27.Kc1 Nh2–+) 22...Ne1 23.Re1 Qe1 24.Qe1 Re1 25.Bb2 Bc6 (25...Bc6 26.Ba3 Bf3 27.Kf3 Rd1–+) 0–1. Frenzel,Lothar – Woschkat,Karl_Heinz, corr SOK–91–71, 1991.

6.Nbc3 =+.

6.h3 Bd7 7.Ng3 Bd6 8.a4 Bg3 9.fg3 0–0 10.Be2 c6 11.Nc3 cb5 12.ab5 b6 13.0–0 Qc7 14.Kh2 Be6 15.Rf4 d4 16.Na4 de3 17.de3 Nbd7 18.Nc3 Rad8 19.Qe1 Nd5 20.Nd5 Bd5 21.Rc1 Qd6 22.Rg4 Nf6 23.Rf4 Rfe8 24.Bf6 gf6 25.Qc3 Re5 26.Rcf1 f5 27.Rf5 Rde8 28.Rf6 Qe7 29.Bc4 Rc8 30.Rc6 Rc6 31.bc6 Bc4 32.Qc4 Rc5 33.Qb4 1–0. ventil (1605) – abravo, internet, 2014.

6.h3 Be2 7.Be2 Be7 8.0–0 0–0 9.c4 c6 10.Nc3 a6 (10...dc4 11.Bc4 a6 12.a4=) 11.cd5 cd5 12.Qb3 Bd6 (12...ab5!? 13.Qb5 Qd7=) 13.d3+= (worse is 13.Nd5 Nd5 14.d3 Nf6–+) 13...ed3 14.Bd3 ab5 15.Nb5 (15.Nd5 Nd5 16.Rfd1 Nc7–/+) 15...Be7 16.Rfd1 Nc6 17.Be2 Na5 18.Qc2 Rc8 19.Qf5 g6 20.Qd3 Nc4 21.Bd4 Qd7 22.Rab1 Rfd8? (22...Ne4 23.Bf3+=) 23.Bf3 (better is 23.Bf6!? Bf6 24.Bg4 Qe7 25.Bc8 Rc8 26.Qd5 Rc5+–) 23...Ra8 (23...Qe6 24.Nc3+/–) 24.Qb3 (24.Nc3 Qc8+–) 24...Na5+/– 25.Qb2 Nc4 26.Qa1 Ra6 27.Qc3 Rc6 (27...Qf5 28.Nc7 Ra2 29.Rb7+=) 28.Qd3+/– Ra6 29.Nc3 Ra3 (29...Qc8 30.Rdc1 Rc6 31.Bf6 Bf6 32.Nd5+/– (worse is 32.Bd5 Nb6 33.Rb6 Rb6–/+)) 30.Qc2 Ra5 (30...Nd6 31.Nd5 Nd5 32.Bd5+–) 31.Qb3 (better is 31.Bf6!? Na3 32.Qc1 Bf6 33.Rd5 Qc8+–) 31...b5 32.Bf6 Ra3?? (32...Bf6 33.Nd5 Qe6+–) 33.Qb5 (better is 33.Nd5 Rb3 34.ab3+–) 33...Bf6 34.Qd7 (34.Qd5?! Qc8 35.Bg4 Rd5 36.Bc8 Rd1 37.Nd1 Ra2+=) 34...Rd7 35.Nd5 (35.Rd5?! Rd5 36.Nd5 Be5+–) 35...Kg7 36.Nf6 Rd1 37.Rd1 Kf6 38.Bd5 Nb6 39.Bb3 Ke7 40.Rd4 f5 41.Rb4 (41.g4 fg4 42.hg4 Nd7+–) 41...Nd7 42.Rb7 Kd6 43.Bg8 Kc6 44.Rb3 Rb3 45.Bb3 Kc5 46.Kh2 h6 47.Kg3 Ne5 48.f4 Nd7 49.Bf7 Nf8 50.Kf3 Kd6 51.e4 Ke7 52.Bb3 fe4 53.Ke4 Nd7 54.Kd4 Kf6 55.g4 h5 (55...g5 56.f5+–) 56.a4 hg4 57.hg4 g5 58.f5 Ne5 (58...Ke7 59.a5 Kd6 60.Bd5+–) 59.Bd1 Nf7 (59...Nd7 60.a5+–) 60.Kd5 (better is 60.Kc5 Ke7 61.a5 Nd6 62.f6 Kd7 63.Ba4 Ke6+–) 60...Ne5 (60...Ke7+–) 61.a5 Nd3 62.Kc6 Ne5 (62...Nb4 63.Kc5 Na6 64.Kb5+–) 63.Kb7 (better is 63.Kb5 Nf7 64.Kc5 Ke5+–) 63...Nd7 64.a6 (better is 64.Ba4 Nc5 65.Kc6 Nd3+–) 64...Nc5 65.Kb6 Na6 66.Ka6 Ke5 67.Kb5 Kf6 68.Kc6 Ke5 69.Kd7 Kf6 (69...Ke4 70.f6 Ke3 71.f7 Kd2 72.Bf3 Kc1 73.f8Q Kd2 74.Qb4 Kd3 75.Qa3 Kd2 76.Qb2 Kd3 77.Qc1 Kd4 78.Qd2 Kc4 79.Kc6 Kb3 80.Bd5 Ka4 81.Kc5 Ka3 82.Qb4) 70.Bb3 (70.Kd6 Kg7 71.Ke7 Kh6 72.f6 Kg6 73.f7 Kg7 74.f8Q Kg6 75.Bc2) 70...Kg7 71.Ke7 Kh6 (71...Kh7 72.f6 Kg6 73.f7 Kg7 74.f8Q Kg6 75.Bc2) 72.f6 Kh7 (72...Kg6 73.f7 Kg7 74.f8Q Kg6 75.Bc2) 73.f7 Kg6 (73...Kg7 74.f8Q Kg6 75.Bc2) 74.f8Q Kh7 75.Bc2 1–0. Spreemann,Tarek (1890) – Gholami,Armin, Oslo Sveins op 2nd, 2009.

6.h3 Be6!?=.

6.h3 Bh5 7.c3 Qd7 8.Qa4 Be2 9.Be2 b6 10.0–0 Bc5 11.a3 0–0 12.c4 dc4 13.Bf6 gf6 14.Qd1 Qe6 15.Bg4 f5 16.Be2 Nd7 17.Nc3 Ne5 18.a4 Bd6 19.Qc2 Ng6 20.Nd1 Qe5 21.Qc3 Qh2 0–1. tuulevalja – karambaaa, internet, 2014.

6.h3 Bh5 7.g4+= Bg6 8.Nf4 Nbd7 9.d3 (9.g5!? Ng8 10.Nc3+/–) 9...Nc5 (9...ed3 10.cd3 Bb4 11.Nd2+=) 10.h4 Na4 (10...Bd6 11.h5 ed3 12.hg6 Bf4 13.ef4 Qe7 14.Be5+/–) 11.Bd4+= h6 12.Nd2 Nc5 (12...Bc5 13.c3 Nb2 14.Qb3 Bd4 15.cd4 Nd3 16.Bd3 ed3 17.Ng6 fg6 18.Qd3+=) 13.Ng6 fg6 14.de4 Nfe4 15.Bg2 Qd7 16.Ne4 Ne4 17.0–0 Qb5 (better is 17...Bd6!?+=) 18.c4+– Qd7 19.cd5 Nf6 (19...Qd5?? 20.Qb1 Kf7 21.Be4+–) 20.Rb1 b6 (20...0–0–0 21.Ba7 Nd5 22.Qb3+–) 21.Qc2 (21.d6 Rc8 22.Qc2 Qg4 23.Qc6 Qd7 24.Qd7 Kd7 25.Bh3 Kd8 26.Bc8 Kc8 27.dc7 Bd6+–) 21...Kf7 22.g5 hg5 23.hg5 Nd5? (better is 23...Ng4!?+/–) 24.Qb3+– Rd8 25.e4 c5 26.Be5 c4 (26...Bd6 27.Bg3 Rh5 28.Qd5 Qe6+–) 27.Qc4 Bc5 (27...Re8 28.Bf4 (28.Qd5 Qd5 29.ed5 Re5+=) 28...Rc8 29.Qd5 Qd5 30.ed5+–) 28.ed5 (worse is 28.Qd5 Qd5 29.ed5 Rh5+–) 28...Rh5 29.d6 Kf8 (29...Qe6 30.Qf4 Qf5+–) 30.Rb3 (30.Rb3 Rg5 31.Rf3 Rf5 32.Bh3 Rf3 33.Bd7 Rd7 34.Qe6+–) 1–0. Jaeger,Erich (2015) – Kirstein,Hans, BdF remoteschach.de, 2007.

5.f3 Bd6

6.Nc3 0–0 7.Be2 Be6 8.d3 a6 9.de4 de4 10.Qd4 =+.

6.f4 0–0 7.g3 Nbd7 8.a4 Nb6 9.a5 Bg4 10.Be2 Nc4 11.Bc3 h5 12.h3 Be2 13.Qe2 Qe7 14.g4 Nd7 15.g5 g6 16.Qf2 a6 17.ba6 Ra6 18.Ne2 Rfa8 19.Nd4 Na5 20.0–0 c5 21.Nb5 Nc4 22.Ra6 Ra6 23.Nd6 Nd6 24.d3 Qe6 25.Kh2 ed3 26.cd3 b5 27.Nd2 b4 28.Ba1 Ra2 29.Rd1 c4 30.dc4 dc4 0–1. surmavlod – haptocar, internet, 2013.

5.f3 Nbd7

6.Be2 Nc5 7.Nc3 Bd6 8.fe4 de4 9.d4 Ncd7 10.Nh3 =+.

6.Ne2 ef3 7.gf3 Nh5 8.Qc1 Qh4 9.Kd1 Bd6 10.Nbc3 Ndf6 11.a4 Qf2 12.Nd4 Bh2 13.Nce2 Be5 14.Ra3 Ng3 15.Ng3 Bg3 16.Be2? Bh3–+ 17.b6 Bg2 18.Nf5 Bh1 19.Ng3 Qg3 (19...Qg3 20.c4 ab6 21.Bf6 gf6–+) 0–1. Comet B50 – Fritz 5.32, 2003.

5.h3 a6

6.ba6 Na6 7.a3 Nc5 8.g4 h5 9.g5 Nfd7 10.h4 Nb6 11.Nh3 Bg4 12.Be2 Nca4 13.Bd4 c5 14.Be5 Nc4 15.Bf4 (15.Bc3 Nc3 16.Nc3 Na3–+ (16...Ra3?! 17.Ra3 Be2 18.Ne2 Na3 19.Nhf4=+)) 15...Qb6 16.Bg4 (16.Qc1 Be2 17.Ke2 g6–+) 16...hg4 17.Qg4 Qb2 18.0–0 Qa1 (18...Nab6 19.d3 ed3 20.cd3 Qa1 21.dc4 Nc4 22.Qf5–+) 19.g6 (19.Nc3 Ne5 A) 20.Ra1?? Ng4 21.Nd5 Rd8 (21...Rh4?! 22.Nc7 Kd7 23.Na8 Rh3 24.Kg2–+) 22.Nc7 Ke7–+; B) 20.Be5=) 19...Qf6 (19...Na3 20.gf7 Ke7 21.Qg5 Ke6 22.Nc3 Qf1 23.Kf1 Nc3 24.Qe5 Kf7 25.Ng5 Kg6 26.h5 Kh5 27.Nf3 Kg6 28.Qe6 Kh5 29.Qf5 g5 30.Qg5) 20.gf7 Qf7 (< 20...Kf7 21.Qd7 Be7 22.Ng5 Kf8 23.Qd5–+) 21.Ng5 Qg6 22.Qe6 Qe6 23.Ne6 Kd7 24.Nc7 Ra5 25.Nd5 Kc6 26.Ndc3 Nd2! 27.Na4 Nf3 28.Kg2 Ra4 29.Nc3 Ra3 30.Ne4 Nh4 31.Kg3 Nf5 32.Kf3 Bd6 33.Nd6 Nd6 34.Rg1 Rg8 35.Rg6 Rf8 36.Rg7?? Ra4 37.Rg6 Raf4 38.ef4 b5 39.Kg4 b4 40.Kg5 c4 41.Rf6 Rf6 42.Kf6 b3 43.cb3 cb3 44.f5 b2 45.Kg7 b1Q 46.f6 Qf5 47.f4 Ne8 48.Kf7 Kd7 49.Kf8 Qf6 0–1. MasterofDisaster – WizardNo1, Live Game Caissa's Web, 2004.

6.Nc3 ab5 7.Nb5 c6 8.Nd4 Be7 9.g4 (better is 9.Nge2–/+) 9...g6 (better is 9...c5 10.Nf5 Bf5 11.gf5 Qd7–/+) 10.g5+= Nh5 (better is 10...Nfd7 11.Nc6 Nc6 12.Bh8 Bg5+=) 11.h4 (better is 11.Nc6 Nc6 12.Bh8+/–) 11...0–0 12.Be2 Ng7 13.f4 (13.Nh3 c5 14.Nb5 Nc6=+) 13...ef3 (13...f6 14.Nb3=+) 14.Bf3 Nd7 15.Bg4 (15.Nde2 Bd6=+) 15...Nc5 16.Bc8 Qc8 17.d3 (17.Nb3 Ne4 18.Nh3 Nh5–/+) 17...Nf5 (17...f6 18.Nh3 Na4–+) 18.Nf5= Qf5 19.Qe2 (better is 19.Qf3!?=+) 19...Na4–/+ 20.e4? (better is 20.Rb1 Bb4 21.Kd1–+) 20...de4–+ 21.de4 Qa5 22.Qd2 Nb2 23.Qa5 Ra5 24.Nf3 Nc4 25.h5 Ne3 26.Kf2 Nc2 27.Rab1 b5 28.Rb2 Nb4 29.Rd2 Ra2 30.Ra2 Na2 31.Ne5 c5 32.Nc6 Bg5 33.h6 Re8 34.Re1 Nb4 35.Nb4 cb4 36.Kf3 Bh6 37.Rb1 Bf8 38.Kf4 Kg7 39.e5 Rc8 40.Ke4 Rc3 41.Kd5 b3 42.Kd4 b4 43.Rb2 Bc5 44.Kd5 Bf8 45.Kd4 Rg3 46.Kd5 Be7 47.Kc6 f6 48.ef6 Bf6 49.Rd2 b2 50.Rd1 Rc3 51.Kb5 Rc1 52.Rd7 Kh6 53.Rh7 0–1. MasterofDisaster – tuvi, Live Game Caissa's Web, 2004.

6.d3 ab5 7.de4 Ne4 8.Bb5 c6 9.Bd3 Bb4 10.c3 =+.

5.h3 c6

6.a4 a6 7.c4 Qa5 (7...ab5 8.ab5 Ra1 9.Ba1+=) 8.Nc3 Qb4 9.Ba3 Qa5 10.Bf8 Kf8 11.cd5 cd5 12.Qb3 Be6 13.Qa3 Ke8 14.Nge2 ab5 15.Nb5 Nc6 16.Nd6 Kd7 17.Nb7 Qb4 Attacking the isolated pawn on a4 18.Nc5 Ke7 19.Ne6 fe6 20.Nd4 Qa3 21.Nc6 (21.Ra3?! Nd4 22.ed4 Rhb8=) 21...Kd7 22.Ne5 Kd6 23.Ra3 Ke5 24.Bb5 Rhc8 25.0–0 Rc2 26.f4 Kd6 27.d3 Re2?? (better is 27...Rb2 28.Rfa1 Ra5+=) 28.de4+– Re3 29.e5 (better is 29.Re3!? Ne4 30.Rc1 h6+–) 29...Kc5 (29...Re5 30.fe5 Ke5+–) 30.Re3 (30.Re3 Ne4 31.Rc1 Kb4 32.Rd3+–; 30.ef6?! Ra3 31.f5 ef5=) 1–0. aleksandras19 – droncia, internet, 2013.

6.a4 cb5 7.ab5 Bd7 8.c4 dc4 9.Bc4 Bc5 10.Bf6 Qf6 11.Nc3 Bf5 12.Nd5 (12.Bd5!? Qe7 13.Qc2+=) 12...Qd8 13.Ne2 0–0 14.Nef4 b6 (14...Bd6 15.d4=) 15.d4 ed3 16.Bd3 Bd3 17.Qd3 Nd7 18.0–0 Nf6 19.Rfd1 Nd5 20.Qd5 Qd5 21.Nd5 Rad8 22.Nc7?? (22.Ra7!? Rfe8 23.Kf1+/–) 22...Rd1 (better is 22...Bd6!? 23.Na6 Rfe8=) 23.Rd1+/– f6 24.Kf1 h6 25.Rd5 Rf7 26.Ne6 Re7 27.Nc5 bc5 28.Rc5 Rd7 29.e4 Kf7 30.e5 f5 31.f4 Rd4 32.Rc7 Kg6 33.g3 (33.Ra7?! Rf4 34.Kg1 Rb4+/–) 33...Rb4 34.Ra7 Rb5 35.Ra6 Kf7 36.Kf2 Rb2 37.Ke3 (better is 37.Ke1!?+/–) 37...Rb3= 38.Kf2 Rb2 39.Kf3 (better is 39.Ke1!?+/–) 39...Rb3= 40.Kg2 Rb2 41.Kh1 Rb1 42.Kh2 Rb2 43.Kg1 Rb1 44.Kf2 Rb2 ½–½. riditko – mkoll, internet, 2013.

6.a4 c5 7.c4 b6 (7...d4!?+=) 8.cd5= Nd5 9.Ne2 f5 10.Nbc3 Nb4 11.Ng3 Qg5 12.Qh5 (better is 12.d3 Bd6 13.Nge4 fe4 14.Ne4+=) 12...Qh5–/+ 13.Nh5 Nd7 (13...Nc2!? 14.Kd1 Na1+=) 14.Rc1 Bb7 15.Nf4 g5 (15...Bd6 16.a5 Bf4 17.ef4 ba5 18.Nd1–/+) 16.Ne6 Bd6 (16...Ne5 17.Nd1 Nbd3 18.Bd3 Nd3 19.Kf1+=) 17.Ng5 (better is 17.Ng7 Kd8 18.Nf5+/–) 17...0–0?? (better is 17...Ke7 18.Nce4 fe4 19.Bh8 Rh8+=) 18.Bc4+– Kg7 19.Ne6 (better is 19.Nce4 Be5 20.d4+–) 19...Kg8?? (19...Kh6 20.Nf8 Ne5 21.Be6 Nbd3 22.Kf1 Nc1 23.Nh7+/– (23.Bc1?! Rf8 24.Ke2 Nd3=)) 20.Nf8 (better is 20.Nc5 Rf7 21.Nb7+–) 20...Kf8 21.0–0 Ne5 22.Ne2 Nbd3? (better is 22...Nc4!? 23.Rc4 Nd3+/–) 23.Be5+– Ne5 24.d4?? (better is 24.Be6 Nd3 25.Rc4+–) 24...ed3= 25.Nf4 Nc4 (better is 25...d2!? 26.Rc3 Nc4 27.Rc4 Bf4 28.ef4 Re8–/+) 26.Rc4+/– Be4 27.Rd1 Bf4 28.ef4 1–0. brasseur – granit2008, internet, 2013.

5.h3 Bd6

6.a4 0–0 7.Bf6 Qf6 (7...gf6?! 8.c4 dc4 9.Bc4=) 8.Nc3 Be6 9.Nge2 Be5 10.Qb1 Nd7 11.g3 c6 12.Bg2 Qg6 13.Nf4 Bf4 14.ef4 Qf6 15.Ra3 Qd4 16.Ne2 Qf6 (16...Qc5 17.Rc3 Qd6 18.Nd4–/+) 17.0–0 (17.Nc3 Nb6 18.bc6 bc6 19.Qb4–/+) 17...Qh6 18.Kh2 g5 19.fg5 Qg5 20.Nf4 Bf5 21.d3 ed3 22.cd3 Ne5 23.Qd1 Kh8 24.Qe2 Rg8?? (better is 24...Rae8 25.Qc2 Qf6=) 25.Qe5+– Rg7 (25...f6 26.Qd6 Rac8 27.Qc5+–) 26.g4 (better is 26.h4!? f6 27.Qd6 Qh6 28.bc6 bc6 29.Qc6 Rc8 30.Qd5 Bg4+–) 26...Bg4 27.hg4 (better is 27.Qg5 Rg5 28.hg4 Rg4+–) 27...Qg4 (better is 27...Qe5 28.Kg3 Rg6–+) 28.Bh3 Qf3 (28...Qg5 29.Qg5 Rg5+–) 29.bc6 bc6 30.Nh5 (better is 30.Rb3 Rag8 31.Qf6 Rf8+–) 30...Rag8 (30...f6 31.Nf6 Rf8+–) 31.Ng7 Rg7 32.Rb3 h6 33.Rb8 Kh7 34.Qf5 Qf5+– 35.Bf5 Rg6 36.Bg6 Kg6 37.Rb7 Kf6 38.Rg1 Ke6 39.Ra7 f6 40.Rb7 Kd6 41.a5 Kc5 42.a6 Kd6 43.a7 Kc5 44.a8Q Kd6 45.Qd8 Kc5 46.Rc1 Kd4 47.Qf6 Kd3 48.Qc6 Ke2 49.Qh6 Kf3 50.Rf7 Ke4 51.Re1 Kd4 52.Qh4 Kc5 53.Rc7 Kd6 54.Qe7 1–0. riditko – chuckdeath, internet, 2013.

6.c4 Be6 7.cd5 Bd5 8.Ne2 Bc4 9.Nbc3 Be5 10.Qc1 0–0 11.Ng3 Bf1 12.Nf1 Nbd7 13.Ng3 Nc5 14.d4?? Nd3–+ (14...Nd3 15.Kf1 Nc1 16.de5 Qd2 17.Rc1 Qb2–+) 0–1. sportsmaniac (2290) – lwarren (2370), net–chess.com, 2007.

6.Ne2 0–0 7.Nd4 Nbd7 8.c4 Ne5 9.cd5 Nd5 10.Nc3 (10.a3 a6–/+) 10...Nb4+= 11.Bc1? (better is 11.Ne4 c5 12.bc6 (worse is 12.Nd6 Qd6 13.Nf3 Nbd3 14.Bd3 Nd3 15.Ke2 Rd8–/+) 12...Nbd3 13.Bd3 Nd3 14.Kf1 Nb2 15.Qb3 bc6 16.Qb2=) 11...Nbd3 12.Bd3 Nd3 (12...ed3?! 13.0–0+=) 13.Ke2 f5 14.Qb3 Kh8 15.Ba3 Qh4 16.Rhf1 Qh5 17.f3 Nc5 (17...Ba3 18.Qa3 Bd7 19.Qb3+=) 18.Qb2 (18.Qc4!? b6 19.Qd5+=) 18...Qg6 19.Rg1 Nd3 20.Qb3 Qg3 (better is 20...Ba3!? 21.Qa3 Be6 22.Ne6 Qe6 23.fe4 Qc4 24.ef5 Nb4 25.Kd1 Rf5–/+) 21.Raf1 Nc5 22.Qd5 Nd3?? (better is 22...c6 23.Qc4 cb5 24.Ncb5 b6 25.Nd6 Qd6 26.fe4 a5=) 23.Bd6+– cd6 24.Nd1?? (better is 24.fe4 Nc5 25.ef5+–) 24...Bd7 (24...Nc1) 25.a4?? (25.Nf2 Nf2 26.Rf2=) 25...Rac8 (25...Nc1) 26.fe4?? (better is 26.Nc3+=) 26...fe4 (26...Nc1) 27.Rf8 (27.Nc3 Rf1 28.Qe4–+) 27...Rf8 28.Qe4 Nc1 0–1. lican – schachtior, internet, 2013.

5.h3 Be7

6.a4 0–0 7.c4 c5 8.cd5 Nd5 9.Nc3 Nb4 (9...Bf5!?+=) 10.Ne4= Bf5 11.Ng3?? (11.Qb1 Qd5 12.Nc3 Qd7=) 11...Bg6?? (better is 11...Nc2 12.Ke2 Bd3 13.Kf3 Qd5 14.e4 Be4 15.Ne4 Na1 16.Qa1 f5–+) 12.Nf3?? (better is 12.Rc1+=) 12...Nc2–+ 13.Ke2 (13.Qc2 Bc2 14.Be2–+) 13...Bd3 0–1. riditko – emirek, internet, 2013.

6.c4 0–0 7.cd5 Nbd7 8.Nc3 Ne5 9.d4 Nd3 10.Bd3+/– ed3 11.Qd3 Nd5 12.Nf3 Nc3 13.Qc3 a5 14.0–0+/– Re8 15.d5 Bf6+= 16.Nd4 Bd7 17.a4 c6? 18.dc6+– bc6 19.bc6 Bc6? 20.Qc6 Bd4 21.Bd4 Rc8 22.Qb5 ½–½. gtate (1915) – winston (1930), net–chess.com, 2004.

6.d3 0–0 7.de4 de4 8.Nc3 a6 9.a4 Bd6 10.Bc4 =+.

4.Bf6 Qf6

5.Nc3 c6 6.Ne4 Qe5 7.Nc5 Bc5 8.Nf3 Qe7 9.bc5 Qc5 10.Be2 0–0 11.0–0 d5 12.d4 Qc3 13.Rb1 b6 14.Rb3 Qa5 15.Qc1 Qa2?? (better is 15...Be6) 16.Ra3 1–0. Wall,Bill – HSN, FICS, 2012.

5.Nc3 Qg6 6.Nd5 Bd6=+ 7.Nh3 Qf5–/+ 8.Ndf4 Bb4 9.Rb1 Be7 10.f3 d5 11.fe4 de4 12.Bc4 Qe5 13.Rb5 c5 14.0–0 0–0 15.Bd5 Nc6 16.Qh5 a6 17.Qe5=+ Ne5 18.Rbb1 Rb8 19.Nf2= ½–½. aschellen (1965) – NebAnphu (2020), internet, 2006.

5.Nc3 Bb4

6.Ne4 Qc6 7.Bd3 d5 (7...0–0 8.Qh5 (8.Rb1 a5 9.Qh5 f5 10.Ng5 h6 11.N5f3=; 8.Nf3 d5 9.Ng3 Nd7 10.Nd4 Qb6 11.Rb1=; 8.a3 Be7 9.Qh5 f5 10.Ng5 h6 11.N5f3=; 8.c3 Be7 9.Qh5 h6 10.Nf3 d5 11.Ng3=) 8...f5 9.Ng5 h6 10.N5f3 d5 11.Ne2=) 8.Ng5 (8.Ng3 0–0 9.Nf3 Nd7 10.Nd4 Qb6 11.c3=) 8...h6 (8...Qh6 9.N5h3 c6 10.c4 dc4 11.Bc4+=) 9.Rb1 (9.N5f3!?+= 0–0 10.Nd4 Qf6 11.Qf3=) 9...hg5–/+ 10.Rb4 Qd6 11.a3 (11.Rd4–/+) 11...Rh2 12.Rh2 Qh2 13.Kf1 Nd7 14.Rg4 Qh6 15.f4 f6 (15...gf4!? 16.ef4 Nc5 17.Qe1 Kd8–/+) 16.Rg3 Nc5 (16...gf4?! 17.Rh3 Qg5 18.Rh5=). Montag,Wilfrid Franz – Graf,Norbert, BdF, 1986.

6.Ne4 Qe5 7.Bd3 d5 8.Nf3 Qh5 (8...Qe7 9.Ng3=+) 9.Ng3= Qg4 (9...Qh6 10.Rb1 Nc6 11.Bb5=) 10.h3 Qd7 11.c3 Be7 12.Qb3 (12.Bf5 Qd8=) 12...c6 (12...Qd8 13.Bf5 Na6 14.d4=) 13.Nf5 (13.Bf5 Qd8=) 13...0–0 14.Ne7 Qe7 15.0–0 h6 (15...Nd7 16.Bc2=) 16.Nd4 (16.Bc2 Qf6=) 16...Qg5 (16...Qf6 17.c4=) 17.f4 Qf6 18.Qa3 (better is 18.c4=) 18...b6 (better is 18...Re8=) 19.Bh7!+/– Kh7 20.Qf8 Bb7 21.Nf3 Nd7 22.Qa3 Nc5 23.Ne5 (23.Rfb1 Ne4+/–) 23...Bc8 (23...Ba6 24.Rfb1 Bb5 25.Rb2+/–) 24.Rfb1+– Bh3? (better is 24...Bb7+–) 25.Rf1?? (25.gh3 Qh4 26.Qc1 Qg3 27.Kf1+=) ½–½. Frysiak,Adam – Weber,Krzysztof, corr 2. AMM, Poland, 1993.

6.Ne4 Qe7.

6.Ne4 Qg6 7.Ng3 =+.

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  • 1.b4 (4 players, 10 days/move)
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  • 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
  • 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
  • 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
  • 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)

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