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1.b4 a5 2.b5 Nf6

(...)

3.a4 b6 (--> 1.b4 a5 2.b5 b6 3.a4 Nf6).

3.a4 c6 (--> 1.b4 a5 2.b5 c6 3.a4 Nf6).

3.Bb2 Nd5 4.e4+= Nb6 5.c4 d6 6.d4 d5 (6...e6!?+=) 7.cd5+/– Nc4?? (Better is 7...a4+/–) 8.Bc4+– g6 (8...Nd7 9.Nc3+–) 9.Nf3 e5 (9...Bg7 10.0–0+–) 10.de5 (10…Bg4 11.0–0+–) 1–0. Taulien,Hans_Juergen – Schley,Martin, remoteschach.de, 2002.

3.Nc3 e5 4.e4 Bc5 5.a4 0–0 6.Nf3 (6.Bc4 d6+=) 6...d5 (6...Ng4 7.d4 ed4 8.Nd4–/+) 7.ed5+= Nd5 8.Nd5 (8.Ne5? Bf2 9.Kf2 Nc3–+) 8...Qd5 9.c4 Qd6 10.d3 Bf5 11.Be2 Nd7 12.Bb2 Rfe8 Black prepares the advance e4 13.0–0 f6 14.Bc3 e4 (14...Nf8 15.Ra2=) 15.de4= Be4 16.Qd6 Bd6 17.Rfe1 Nc5 18.Nd2 f5 19.Ne4 Ne4 (worse is 19...Re4 20.Bf3 Re1 21.Re1 Na4 22.Bb7+=) 20.Bd4 Bb4 21.Rec1 Nd2–/+ 22.Bf3 Nf3 23.gf3 Re2 24.Bc3 Bc3–/+ 25.Rc3 Rd8 26.Rcc1 Rdd2 27.Rf1 Rc2 28.Rac1 Kf7 29.Kg2 Ke6 30.Kg3 Ke5 31.h3 g5 32.Rce1 h6 33.Rc1 Kd4 34.Rc2 Rc2 35.Rd1 Kc4 36.Rd7 Kb4 37.Rd4 Rc4 38.Rc4 Kc4 39.f4 c5 40.fg5? hg5–+ 41.f4 gf4 42.Kf4 Kd4 43.Kf3 c4 44.Ke2 Ke4 45.h4 f4 46.h5 Kf5 0–1. Wright,David – Newberry,Brian, USCF/WS/06WM17, 2006.

3.Nc3 g6 4.Bb2 Bg7 5.e3 0–0 6.Nf3 a4 7.a3 c6 8.Rb1 c5 9.Bc4 b6 10.0–0 d5= 11.Be2 Nbd7 12.h3 e5 13.d4 e4 14.Ne5 c4 15.Nc6 Qe8= 16.f3 Bb7 17.fe4+/– Ne4 18.Nd5 c3?? 19.Nc7 Qc8 20.Ne7 (20...Kh8 21.Nc8 Rac8 22.Bc1 Rc7 23.Rb4+–) 1–0. ppramanik (2490) – sagaz (2470), net–chess.com, 2006.

3.c4 c5 (--> 1.b4 a5 2.b5 c5 3.c4 Nf6).

3.c4 d6 4.e3 g6 5.Bb2 Bg7 6.Nf3 0–0 7.d4 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

3.d3 d5 4.Nf3 e5 5.Ne5 Bd6 6.Bb2 0–0 7.e3 Re8 8.Nf3 Bd7 9.d4 a4 10.a3 c6 11.bc6 Nc6 12.Nc3 Qb6 13.Rb1 Qa5 14.Qd2 Qb6 15.Bd3 Bg4 16.Nb5 Be7 17.0–0 Ne4 18.Qe1 Bf3 19.gf3 Ng5 20.Qd1 Nb8 21.f4 Ne4 22.Qh5 g6 23.Qe2 Nd7 24.c4 Nef6 25.f5 dc4 26.Bc4 gf5 27.Qf3 Rac8 28.Bd3 Kh8 29.d5 f4 30.Bf5 fe3? (30...Rcd8 31.d6! Rg8 32.Kh1 Bd6 33.Nd6 Qd6 34.Bd7 Rd7+–) 31.Bd7 Rg8 32.Kh1 Rc2 33.Bd4 e2 34.Bb6 ef1R 35.Rf1 Nd7 36.Qf7 Bf6 37.Qd7 Rd2 38.Nd6 h6 39.Nf7 Kh7 40.Ng5 Kg6 41.Qf7 Kf5 42.Qe6 Kg6 43.Qg8 Kh5 44.Qe8 Kh4 45.Nf3 Kg4 46.Qe4 Kh5 47.Rg1 Rd5 48.Qg4# 1–0. Green Light Chess v2.15c – DeepPatzer351, computer chess game, 2001.

3.d4 b6 4.Nf3 (4.e3 Bb7=) 4...e6 5.Bg5 h6 6.Bf6 Qf6 7.e3 (7.c3 Bb7=) 7...Bd6 (7...Bb7 8.Nbd2=) 8.Bc4 (8.Bd3 Bb7+=) 8...0–0= 9.a4 (9.0–0 Be7=) 9...c5 (9...Bb7 10.Nbd2=) 10.Nbd2 (10.bc6 Nc6 11.0–0 Bb7=) 10...Qg6 (10...Bb7 11.c3=) 11.g3 (11.Nh4 Qf6 12.Ne4 Qe7 13.Nd6 Qd6=) 11...Bb7 (11...cd4 12.Nd4 Bb7 13.Bd3=) 12.0–0 (12.Bd3 Qh5=) 12...cd4 13.Nd4 (13.Bd3 f5 14.Nc4 Bc7 15.ed4 d6=) 13...Bb4+= 14.Re1 (14.Bd3 Qf6+=) 14...d5–/+ 15.Bb3 (15.Bd3 Qf6–/+) 15...e5 (15...Nd7 16.c4 dc4 17.Bc4–/+) 16.N4f3 (16.Ne2 Nd7+=) 16...Nd7–/+ 17.Nh4 Qh7 18.c3 (18.Rc1!?–/+) 18...Bc3–+ 19.Bc2 (19.Rc1 Rac8–+) 19...g6 20.Rc1 Rac8 21.Re2 Rfd8 22.f3 Qg7 23.Nb3 Qf6 24.Rf2 Nc5 25.Nc5 bc5 26.Qe2 d4 27.Ng2 c4 28.Be4 Qe7 29.Bb7 Qb7 30.Qf1 Qe7 31.Ra2 Qb4 32.Rb1 Qc5 33.f4 d3 34.Rd1?! e4 35.Rf2 Bb4 36.f5 c3 37.fg6 fg6 38.Rf6 Qh5 39.Ra1 d2 40.Nf4 Qf3 41.Ne6 Qf1 42.Rff1 c2 43.Nd8 Rd8 44.b6 d1Q 45.b7 Qe2 46.b8Q Rb8 47.Rf2 Qe3 (47...Qe3 48.Kg2 Rd8–+) 0–1. bicycle – slogger, ChessWorld.net, 2007.

3.d4 d5 4.Nf3 =.

3.d4 e6 4.e3 Bb4 5.c3 Be7 6.Nf3 d5 7.Bd3 c6 8.a4 cb5 9.ab5 Qc7 10.Ba3 Ba3 11.Ra3 Nbd7 12.Nbd2 0–0 13.0–0 b6 14.c4 Bb7 15.cd5 ed5 16.Qb1 Rfc8 17.Ra2 Qd6 18.Ng5 h6 19.Ngf3 Rc3 20.Bf5 Re8 21.Rc2 Rc2 22.Qc2 Rc8 23.Qb1 g6 24.Bd3 Kg7 25.Rc1 Rc1 26.Qc1 Ne4 27.h3 f5 28.Qc2 g5 29.Nf1 Kf6 30.N3h2 Qb8 31.f3 Nd6 32.Ng3 Qc8 33.Qb1 Qc3 34.Nf5 Nf5 35.Ng4 Kg7 36.Bf5 Nf6 37.Qc2 Qc2 38.Bc2 Ng4 39.hg4 Bc8 40.Kf2 Kf6 41.Ke2 Ke7 42.Kd2 Bd7 43.Bf5?? Bb5–/+ 44.Bd3 Bd3 45.Kd3 a4 46.Kc3= b5 47.Kb4 Ke6 48.e4 Ke7 49.e5= Ke6 50.g3 Ke7 51.f4 Ke6 52.f5 Kf7 53.Ka3 Ke8 54.f6 Kf7 55.Kb4 Ke6 56.Ka3 ½–½. Baroin,Bernard (2015) – Amir,Jacob, IECG, 2004.

3.e3 a4 4.a3 e5 5.Bb2 Bd6 (5...d6 6.d4 e4 7.c4=) 6.Nf3 0–0 (6...e4!? 7.Nh4 0–0=) 7.Be5 Be5 8.Ne5 d5 9.Nf3 Bg4 10.Be2 c6 (10...Ra5 11.Nc3+=) 11.bc6 Nc6 12.Nc3 Ne4 13.0–0 Nc3 14.dc3 Qf6 (14...Ra5 15.Qd2+=) 15.c4 (15.Rb1 Qc3 16.Qd5 Qa3 17.Rb7 Qc3+=) 15...Bf3 (15...dc4 16.Qb1= (worse is 16.Bc4 Rfd8 17.Qe1 Bf3 18.gf3 Ne5–/+)) 16.Bf3+= (worse is 16.gf3 d4+=) 16...dc4 17.Bc6 Qc6 18.c3 (18.Qh5 Rad8=) 18...b5 (18...Rfd8 19.Qc2+=) 19.Qc2 Rad8 20.Rfd1 h6 21.h3 Qf6 22.Qb2 Rb8 23.Rd5 Qc6 24.Rad1+= Kh7 25.Qb4 f6 26.Rc5+/– Qe4 27.Rd4 Qc2 28.Rdd5 Rbd8 29.Rb5+/– Qc1 30.Kh2 Rd5 31.Rd5 Rc8 32.Ra5 Qf1 33.f3 Qf2? 34.e4 Qe3+/– 35.Ra4 Rd8 36.Qc4?? Qf4–+ 37.Kg1 Rd1 38.Kf2 Rd2 39.Kg1?? Qg3 40.Qf1+– Rd1?? 41.Qd1 Qf4 42.Rd4 Qb8 43.c4 Qb3 44.Qd3 Qb1 45.Kh2 Qd3+– 46.Rd3 f5 47.ef5 Kg8 48.c5 (48.c5 Kf8 49.c6 Kg8 50.c7 Kf7 51.c8Q g6 52.Qe6 Kg7 53.Rd7 Kf8 54.Qf7) 1–0. Fournier,Frederic (1845) – hectorbernal, Active, 2011.

3.e3 c5 4.Nf3 d5 5.Be2 Bg4 6.Bb2 e6 7.0–0 Be7 8.c4 0–0 9.a4 Nbd7 10.d4 cd4 11.Nd4 Be2 12.Qe2 Rc8 13.Nd2 Bb4 14.N4b3 Nb6 15.Rfc1 Qe7 16.c5 Bc5 17.Rc5 Rc5 18.Nc5 Qc5 19.Ba3 (better is 19.Bf6!? gf6 20.Qg4 Kh8 21.Nb3+=) 19...Qc3–/+ 20.Qd1 Ra8 21.Be7 Rc8 22.Bf6 Qf6 23.Rc1 Rc1 24.Qc1 Nc4! 25.g3 (25.Nc4 dc4 Passed pawn) 25...Qb2 26.Qb2 Nb2 27.Nb3 Na4 28.Na5 Nc5 29.Kf1 Kf8 30.Ke2 Ke7 31.Kd2 Kd7 32.Kc3 Ne4 33.Kd4 b6 (33...Nf2?! 34.Nb7 Kc7 35.Na5–+) 34.f3 (34.Nc6 Nf2 35.Ne5 Ke7–+) 34...Ng5 (34...Ng5 35.Nc6 Nf3 36.Kd3 Kd6–+; 34...ba5?! 35.fe4 Kd6 36.e5 Kc7 37.Kc5–+) 0–1. Mely – PeterRs, ChessWorld.net, 2016.

3.Nf3 Ne4 4.Bb2 d5 5.a4 e6 6.c4 Bc5 7.e3 dc4 8.Bc4 0–0 9.0–0 Nd6 10.Bb3 Bd7 11.d4 Bb4 12.Nbd2 Qe7 13.e4 Rd8 14.e5 Nf5 15.Ne4 c6 16.bc6 Bc6 17.Bc2 Nd7 18.Ned2 Rac8 19.Rc1 Bd2 20.Nd2 Bg2 21.Kg2 Nh4 22.Kh1 Kf8? (22...Qb4 23.Ba1 Ne5 24.Bh7 Kh7 25.Rc8 Rc8 26.de5 Kg8+/–) 23.Rg1 Qb4 24.Rb1 f5? (24...Ne5 25.Rg3 Nc4+–) 25.ef6 Nf6 26.d5 Qd6 27.Ne4 Ne4 (27...Qd5 28.Qd5 Nd5 29.Bg7 Ke8 30.Bb3+–) 28.Be4 ed5 (28...g6 29.Qd4 e5 30.Qe5 Qe5 31.Be5+–) 29.Qg4 de4 30.Qh4 g5 31.Qg5 h6 32.Qf5 Ke7 33.Rg7 Ke8 34.Qf7# 1–0. Bonetti,Shane – MacChess 5.0, 2000.

3.f4 c6 4.e3 d5 5.Nf3 Bf5 6.Be2 Qc7 7.Bb2 Nbd7 8.Nh4 g6 9.g4 g5 10.Nf5 gf4 11.g5 (11...e6 12.Nh4+– (12.gf6?! ef5 13.bc6 bc6+–; 12.Bf6?! Nf6 13.gf6 ef5+–)) 1–0. Flattum,Odd – Grunswig,W, corr ICCF, 1961.

3.f4 e5 4.fe5 Ng4 5.Nf3 d6 6.e4 de5 7.d4 ed4 8.Qd4 Qd4 9.Nd4 Bc5 10.c3 0–0 11.Bc4 c6 12.Ba3 Nd7 (12...Ba3 13.Na3 Nf6 14.0–0 Ne4 15.Rae1=) 13.Ne6 (13.bc6 bc6 14.Bc5 Nc5 15.Nc6 Bb7= (15...Ne4 16.Bd5 Ra6 17.Ne7 Kh8 18.Nc8 Rc8 19.0–0+=)) 13...Bf2 14.Ke2 Re8–/+ 15.h3 Ndf6 16.hg4+= Ng4? 17.Ng5+– Ne5 18.Bf7 Nf7 19.Nf7 Kf7 20.Kf2 Re4 21.bc6 bc6 22.Nd2 1–0. Flattum,Odd – Larsson,PE, corr ICCF EU–H, 1965.

3.f4 g6 4.Bb2 Bg7 5.Nf3 0–0 6.c4 d6 7.e3= Bf5 =. algernon (2270) – ggreenhalf (2285), net–chess.com, 2002.

3.g3 d6 4.f4 e5 5.fe5 de5 6.Bg2 Bc5 7.Bb2 0–0 8.e3 c6 9.Nf3 e4–/+ 10.Ng5 Re8 11.0–0= Nbd7 12.Nc3 Ne5 13.Nce4 Ne4 14.Ne4 Bg4 15.Qe1 Bb4 16.a3 Bf8 17.bc6 bc6 18.Rf4 Bh5 19.Rf5 Nc4 20.Bf6! gf6 21.Nf6 Kh8 22.Nh5 Na3 23.Ra3! (23...Ba3 24.Qa1 f6 25.Qa3 Qd2 26.Qc5+–; 23.Rf7 Nc2 24.Nf6 Qf6 25.Rf6 Ne1 26.Re1 Bb4+–) 1–0. Bernstein,Osip – Valvo,Michael J, USA, 1960.

3.a4 d6

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

4.h3 e5 5.c4 d5 6.cd5 Nd5 7.e4 Nb4 8.Nc3 Be6 9.Nf3=+ Bc5 10.Be2 0–0 11.d3 f6 12.g4 Nd7 13.Be3 Qe7 14.d4–/+ ed4 15.Bd4 Rad8–+ 16.Qb1 Ne5 17.Be5 fe5 18.Nd1 Rf3! 19.Bf3 Qf7 20.Be2 Rd1! 21.Kd1 Bb3 22.Kc1 Bc2 23.Qb4 Bb4 (24.Kc2 Qf2–+) 0–1. Susanna – Pasqua,Dante, corr, 1962.

3.Bb2 e6

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

4.c4 c6 (--> 3.c4 c6 4.Bb2 e6).

4.e3 d5 5.Nf3 (--> 3.Nf3 e6 4.Bb2 d5 5.e3).

4.e3 d5 5.Nf3 c5 (no 6.bc6) (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 a5).

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

4.Nf3 (--> 3.Nf3 e6 4.Bb2).

3.c4 a4

4.a3 e6 5.Nc3 d5 6.e3 b6 7.Bb2 Nbd7 8.Na4 h6 9.Bd3 Bd6+= 10.Nf3 0–0 11.cd5+/– Nd5 12.Qb1?? N7f6?? 13.e4 Nf4 14.0–0? Bc5?? 15.Nc5+– bc5 16.Bc4 Bb7 17.Nh4?? Ne4–+ 18.Nf3 Ra4?? 19.Ne5?? Nd2 20.Qd1 Qg5 21.Qg4 Nf1 22.Qg5 hg5 23.Bf1 f6 24.Nc4?? Bd5 25.Ne3 Kf7 26.g3 Nh5 27.Be2 g6 28.Rd1 Ng7 29.Ng4 Ke7–+ 30.Nf6? Rf6 31.Bf6 Kf6 32.Rd3 Bc4 33.Rf3 Ke7 34.Bd1 Bd5 35.Re3 Nf5?? 36.Ba4+= Ne3 37.fe3 Bc4 38.Kf2 g4 39.e4 Kf6 40.Ke3 g5 41.Bd1+/– Bb5 42.a4 Bc6 43.a5 c4 44.Kd4 Bb7? 45.Bg4 Ba6? 46.e5+– Ke7 47.Be2 c3 48.Bd1 Kd7 49.Ba4 Kc8 50.Kc3 Kb7 51.Bd7 c6 52.Kb4 Kc7 (53.Be6 Bd3+–; 52...Be2 53.Be6 g4 54.Bf5+–). rabelloenter (1960) – tomassic (1850), net–chess.com, 2006.

3.c4 e5

4.Bb2 Bc5 5.Nf3 d6 6.d4 ed4 7.Nd4 Bb4 8.Nc3 =+.

4.Bb2 d6 5.Nc3 Be6 6.e4= Nbd7 7.Qc2 Be7 8.Nf3 h6 9.a4 0–0 10.Be2 Nb6 11.Nd5 c6 12.Nf6 Bf6 13.0–0 Rc8 14.d3 d5 15.Ne5 cb5 16.ab5 de4 17.de4 Be5 18.Be5 Bc4 19.Ra5 Be2–/+ 20.Qe2 Nc4 21.Ra7 Ne5 22.Rb7 Qd3 (23.Qd3 Nd3=+; 22...Rc4 23.Re1–/+) 0–1. Kerner,Horst – Deneuville,Christian, corr ICCF Cup X, 1994.

4.Nc3 Bb4 5.Bb2 0–0 6.a3 Bc3 7.Bc3 d6 8.g3 (8.d4 Nbd7=) 8...Be6 (8...Nbd7 9.Bg2+=) 9.e3 (9.d3 Nbd7=) 9...Nbd7 10.d3 e4 11.d4 c6 12.bc6 (12.Rb1 Qc7 13.Qd2 a4+=) 12...bc6 13.Nh3 (13.Rb1 Qc7+=) 13...Nb6–/+ 14.c5 Nbd5 15.Qc2 dc5 16.dc5 Nc3 17.Qc3 Nd5 18.Qe5 (18.Qd2!?–/+) 18...a4–+ 19.Bg2? (better is 19.Qd4–+) 19…Qa5 (19...Qa5 20.Kf1 Nc3–+) 0–1. Wiley,Randall – McFarland,Hardon H, corr, 1987.

4.e3 Bc5 +=.

3.c4 g6

4.Bb2 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 g6 4.c4).

4.Nf3 b6 5.a4 (5.d4 Bb7=) 5...Bg7 6.Nc3 e6 (6...0–0 7.d4=) 7.Ra2 (7.d4 Bb7+=) 7...Bb7= 8.e3 c5 9.Be2 (9.d4 cd4 10.ed4 Qc7=) 9...d5 10.d4 cd4 11.ed4 dc4 12.Rc2 Bd5 (12...Nd5 13.Nd5 ed5 14.Ba3=) 13.Ba3 (13.0–0 0–0=) 13...Bf8 14.Bf8 Kf8 15.0–0 Nbd7 16.Qc1 (16.Nd2 Rc8=) 16...Kg7 17.Nd1 (17.Nd2 Rc8=+) 17...Rc8 (17...Qe7 18.Ne5=+) 18.Ne3= Qc7 19.Bc4 Bf3 20.gf3 (20.Be6 Qb7 21.Bd7 Rc2 (< 21...Nd7 22.gf3 Rhd8 23.Kg2+=) 22.Qc2 Qd7 (< 22...Nd7 23.gf3 Qf3 24.Qc7+=) 23.gf3 Qd4=+) 20...Qd6 21.Rd1 Qf4 22.Be2 Rc2–/+ 23.Qc2 Rd8 24.Ng2 Qb8 25.f4 Rc8 26.Qd3 Qd6 27.Bf3 Qb4 28.Bc6 Qa4 29.Ne3 Rd8 30.f3 Nc5–+ 31.Qc3 Qb3 32.Qb3 Nb3 33.d5 ed5 34.Nd5 a4 (35.Ne3 Rd1 36.Nd1 a3–+) 0–1. Kupec,Jan – Baerschneider,Alfred, corr 3GMM–09, 1996.

4.Nf3 Bg7 5.d4 =.

3.e3 d5

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

4.Bb2 g6 5.Nf3 Bg7 6.c4 0–0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d5 6.d4 a5 7.b5).

4.Nf3 e6 5.c4 Nbd7 6.Nc3 Bb4 7.Qc2 0–0 8.Be2 Nb6 9.cd5 ed5 10.0–0 Re8 11.Bb2 Qe7 12.Bd3 Ne4 13.Nd4 g6 14.Be2 Nf6 15.f3 a4 16.a3 Bd6 17.Nd1 Nfd7 18.f4 Nc5 19.Nf2 Ne4 20.Nf3 f6 21.Nd4 Bd7 22.g3 Qf7 23.Rac1 Nf2 24.Rf2 Nc4 25.Bc4 dc4 26.Qc4 Qc4 27.Rc4 Ra5 28.Rc2 Kf7 29.Rf3 Bf5 30.Rc1 Be4 31.Rff1 Bd3 32.Rfd1 Re7 (worse is 32...Bb5 33.Bc3 c5 34.Ba5 cd4 35.Bb4 Bb4 36.ab4+/–) 33.Kf2 Rd7 (worse is 33...Bb5 34.Bc3 c5 35.Ba5 cd4 36.Bb4 Bb4 37.ab4+–) 34.g4 b6 (worse is 34...Bb5 35.Bc3 c5 36.Ba5 cd4 37.Ra1+/– (worse is 37.ed4 Ba3 38.Rb1 Bc4=)) 35.h4 Bc5 (worse is 35...Bb5 36.Bc3 c5 37.Ba5 cd4 38.Rb1 de3 A) worse is 39.Ke3 Re7 40.Kf2 Be2 41.Bb6 Bd1 42.Rd1 Re4+= (worse is 42...Ba3 43.Ra1 Bb4 44.Ra4 Bd2 45.Kf3=); B) 39.de3 Ba3 40.Bb6+/–) 36.Re1 Bd4 37.Bd4 Bb5 38.Bc3 Ra8 39.e4 Bd3 40.Re3 Re8 41.Rce1 Ree7 42.f5 ½–½. housemd (1960) – cachisss (1935), gameknot.com, 2015.

3.e3 d6

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

4.Bb2 g6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6).

4.c4 e5 5.Bb2 =.

4.c4 g6 5.Nc3 Bg7 6.Rb1 Bf5 7.d3 e5 8.e4 Be6 9.Nd5 Bd5 10.cd5+= Nbd7 11.Be3 0–0 12.g4 b6 13.g5 Nh5 14.Qg4 f5 15.ef5 Rf5 16.Ne2 Qe7 17.Ng3= Ng3 18.hg3 Nc5 19.Qh4+= Bh8 20.Kd2 Qg7 21.Be2 Re8 22.Qc4 e4 23.d4 Qe7? 24.dc5+– Rf2? 25.cd6 cd6 26.Rbc1 Bg7 27.Kd1 Rg2 28.Bg4 Qe5 29.Be6 (29...Re6 30.de6 Rg3 31.e7 d5 32.Qc8 Kf7 33.Qd7 Qe7 34.Qd5 Kf8 35.Rc8 Qe8 36.Qd6 Kf7 37.Qf4 Ke7 38.Qe4 Kd7 39.Qe8 Kd6 40.Rd8 Kc7 41.Qd7#) 1–0. Andersson,Lars H – Molinsky,Herbet, corr SSKK 1–462, 1994.

4.d4 Bf5 =.

3.e3 e5

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

4.Bb2 e4 5.Bf6 Qf6 6.Nc3 =.

3.a4 d5

4.e3 e5 5.Nf3 Bd6 6.d3 0–0 7.Be2 Nbd7 (7...e4 8.Nfd2–/+) 8.0–0=+ Re8 9.g3 (9.Bb2 Nb6=+) 9...e4 10.Ne1 Nc5 (10...Nb6 11.Bb2–/+) 11.d4 Ne6 12.c4 c5 13.Ng2? (13.bc6 bc6 14.c5 Bc7=+) 13...b6 (better is 13...cd4!? 14.cd5 Nd5–+) 14.Nc3 dc4 15.d5 Nc7 16.Bc4 Bg4 17.Qb3 Qd7 18.Re1 g5 19.Bf1 Qf5 20.Bb2 Bf3 21.Rec1 Rad8 22.Rc2 Be5 23.Rd2 Rd6 24.Re1 Ng4 25.Ne4? Be4–+ 26.f4 Bb2 27.Qb2 Rd5 28.Bc4 Rd2 29.Qd2 Nd5 30.h3 Ngf6 31.g4 Qg6 32.Bd5 Nd5 33.Qf2 h6 34.f5 Qf6 35.Kh2 Qe5 (36.Kg1 Nc3–+) 0–1. Norbeck,Ivar – Davidson,Lennart, corr SSKK 2–05, 1988.

4.Nf3 e6 =+.

4.h3 e5 5.Nf3 Nbd7 6.e3 +=.

3.a4 e5=+

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

4.Bb2 Qe7 5.Nf3 d6 6.g3 Nbd7 7.Bg2 g6 8.0–0 Bg7 9.e3 0–0 10.d3 Re8 11.Nfd2 d5 12.Nc3 c6 13.Ba3 Qe6 14.Bh3?? (better is 14.Rb1=) 14...Qh3–+ 15.bc6 bc6 16.Nf3 (16.e4 d4 17.Ne2 Ng4–+) 16...h6 (16...e4 17.Ng5 Qf5 18.de4 Qg5 19.f4–+) 17.Bd6 (17.e4–+) 17...e4 18.de4 de4 19.Nd4 (19.Ra3–+) 19...Ng4 20.Qg4 Qg4 21.Rab1 Ne5 22.f4 (22.Be5 Be5 23.Nd1 c5–+) 22...Nf3 23.Nf3 ef3 24.Nd1 Ba6 25.Rf2 Be2 26.Nc3 Red8 27.Ne2 fe2 28.Re1 Rd6 29.Ree2 Rad8 30.h3 Rd1 31.Kg2 Qf5 32.g4 Qe4 33.Kg3 g5 34.f5 Be5 (34...Be5 35.Rf4 Rg1 36.Kf2 Qg2; 34...Rg1 35.Rg2 Be5 36.Kf2 Qg2) 0–1. wk1234 – przbik, playok.com, 2012.

4.e4 Ne4 5.Qe2 d5 6.f3 Nf6 7.Qe5 –/+.

4.Bb2 Bc5

5.e3 d6 6.Nf3 0–0 7.Be2 Nbd7 8.0–0 Re8 9.Ne1 Nd5 10.Bf3 N5b6 11.Nd3 e4–/+ 12.Nc5 Nc5 13.Be2 Nba4 14.c4?? Nb2–+ 15.Qc2 Nbd3 16.Bd3 ed3 17.Qd1 Qh4 18.Qf3 Bg4 19.Qg3 Qg3 20.fg3 Be6 21.Nc3 Bc4 22.Rf4 d5 23.Re1 Nb3 24.Rd1 a4 (25.Na2 Bb5–+) 0–1. Hasler,Ueli – Valverde,Mario (1995), CiF, 2006.

5.e3= Qe7 6.Nf3 d6 7.Be2 Bg4 8.h3 Bh5 9.Nh4 (9.0–0 Nbd7=) 9...Bg6 (9...Be2!? 10.Qe2 0–0=) 10.Ng6+= hg6 11.d4 ed4 (11...Bb6 12.Nd2+=) 12.ed4+/– Bb6 13.0–0 Nbd7 14.Bf3 0–0–0 15.Re1 Qf8 16.Na3 (16.Nd2 Re8+/–) 16...d5 (16...Rh4 17.Qd3+/–) 17.c4 Qb4 (17...Ne4 18.cd5 Nd6 19.Qd2+/–) 18.Qc2 dc4? (better is 18...Rde8 19.Re8 Re8+–) 19.Nc4 Rhe8 (19...Rde8 20.Red1 Qf8 21.Ba3+– (21.Nb6?! Nb6 22.Ba3 Qg8+–)) 20.Rec1 Qe7 21.Ba3 (21.Nb6?! Nb6 22.Ba3 Qd7+–) 21...Qe6 22.d5! Nd5 (22...Qd5 Deflection from b6 23.Nb6 Eliminates the defender b6) 23.Bd5 (23.Bd5 Qf6 24.Nd6 Kb8 25.Nb7+–) 1–0. Friberg,E – Broberger,H, Uppsala, 1985.

4.Bb2 e4

5.e3 d5 6.Ne2 Bd6 7.Nd4 0–0 8.Be2 c5 9.Nb3 Be6 10.0–0 Nbd7 11.f4 ef3 12.Bf3 Ne5 13.d4 Neg4–+ 14.g3? Ne3 15.Qe2 Nf1 16.dc5 Ng3! 17.hg3 Bg3 18.Qg2 Ne4! 19.Be4 Qh4 (20.Na5 Ra5–+ (20...Qe4?! 21.Qg3 d4 22.Nb7=; 20...de4 21.Ra3 Bh2 22.Qh2 Qe1 23.Kg2 Qb1 24.Qe5 Qc2 25.Kg3–/+)) 0–1. playwaycool – Crapov, ChessWorld.net, 2006.

5.e3 d5 6.Ne2 Be7 7.Nd4= 0–0 8.Be2 c5 9.bc6 bc6 10.0–0 c5 11.Nb5 Nc6 12.c4 d4 13.ed4 Nd4=+ 14.N1c3 Bb7 15.Rb1 Rb8 16.Re1 h6 17.Bf1 Qd7 18.Qc1 Nb3 19.Qc2= Nd2 20.Rbd1 Rbd8 21.Bc1 e3 22.fe3 Be4 23.Qa2 Qg4 24.Rd2 Rb8 25.Rf2 Rfd8 26.Be2 Qe6 27.Ref1 Bg6 28.Qb3 Qe5 29.Bb2 Bd6 30.g3 Qg5 31.Kh1 Be5 32.Bf3 Qe3 33.Qa3 Bd4 34.Nd5 Nd5 35.Nd4 cd4 36.cd5 Qe5?? 37.Qc5 Rb4? 38.Qa5 Rdb8 39.Re2 Qg5 40.Re8 Re8 41.Qb4 d3 42.Re1 Re1 43.Qe1 Qd8 44.a5 f6 45.a6 Bf7 46.Qe3 Qb8 (46...Bd5 47.Qd3 Bf3 48.Qf3+–) 1–0. NN – SuperConstellation4, 1988.

5.Bf6 Qf6 6.Nc3 +=.

3.a4 e6

4.Ba3 Ba3 5.Ra3 b6 6.Nc3 =+.

4.Ba3 d6 5.c4 Be7 6.Nc3 0–0 7.e3 c6 8.Bd3 Re8 9.Qc2 d5 10.Nf3 Ba3 11.Ra3 e5 12.Bf5 d4 13.Bc8 Qc8 14.Ne4 Nbd7?? 15.Nd6+/– Qc7 16.Ne8 Re8 17.0–0 Qd6 18.Qb2 d3 19.Qc3 e4 20.Nh4 Ne5 21.f4 Nc4= 22.Rb3 Qd5 23.bc6 bc6 24.Rb7 c5 25.Rb5 Nd7 26.g4 g6 27.Ng2 Ndb6= 28.f5 g5 29.Qf6 Qd8 30.Qh6 f6 31.Rfb1 Nd2 32.Rb6+= Nb1 33.Rb7 Re7 34.Rb1 Rg7 35.Kf2? d2 36.Rd1–/+ c4 37.Ne1 Rf7 38.Nc2 Qd3 39.Nd4 c3 40.Qh3 Rd7 41.Ne6?? c2 (42.Qf1 Qf1 43.Rf1 d1Q 44.Rd1 cd1Q 45.Nd4 Rb7 46.Kg2 Rb2 47.Kh3 Qf1 48.Kg3 Qg2#) 0–1. Roczniak,Jan – Skowron,R, Radom Poland, 1983.

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

4.e3 d5 5.Nf3 Bd6 6.Bb2 0–0 7.Be2 Nbd7 8.0–0 c6 9.c4 Nb6 10.cd5 cb5 (10...ed5 11.Qc2=) 11.de6+= ba4 12.ef7 Rf7 13.Bd4 Nfd5 14.Bb6 (14.Nc3 a3+=) 14...Qb6 (14...Nb6!? 15.Nc3 Bd7=) 15.Qa4 Bd7 16.Qd4 (better is 16.Qc4!? Be6 17.Ng5+/–) 16...Qd4= 17.Nd4 Be5 18.Bc4 Bd4 19.ed4 Be6 20.Nc3 Rd7 21.Rfe1 Bf7 22.Re5 Nc3 23.Bf7 Kf7 24.dc3 b5? (better is 24...Rc8!? 25.Re3 b5+=) 25.Rb5+– a4 26.Rb4 Rda7 27.Kf1 a3 28.Ke2 a2 29.Kd3 Ra3 30.Rb2 Kf6 31.f3 g5 32.g4 Kg6 33.Rc2 h5 34.h3 h4 35.Kc4 Kf6 36.Kb4 Ke6+/– 37.Re2 Kd5 38.Re5 Kd6 39.Rg5 R8a4= 40.Kb5 Ra5 41.Kb4 R5a4 42.Kb5 Ra7 43.Rg6 Kd5= 44.c4 Kd4 45.Rd6 Kc3 46.Rdd1 R3a5 47.Kb6?? Kc4 48.f4?? R5a6 0–1. Hal1958 – Tiit145, playchess.de, 2005.

4.Nf3 Bb4 =.

3.a4 g6

4.Bb2= d5 5.e3 (5.Nf3 Bg7 6.e3 0–0 7.Be2=) 5...Bg7 6.Nf3 0–0 7.Be2 =.

4.c4 c5 5.Nf3 (5.bc6 dc6 6.Nf3 Bg7 7.d4=; 5.e3 Bg7 6.d4 d6 7.Nf3=; 5.Bb2 Bg7 6.e4 0–0 7.e5=; 5.d4 cd4 6.Nf3 Bg7 7.Nd4=) 5...Bg7 6.e3 0–0 7.d4 =.

4.c4 d5 5.cd5 Bg7 6.Bb2 Qd5 7.Nc3 =.

4.c4 d6 5.Nc3 (5.d4 Bg7 6.Nf3 0–0 7.e3=) 5...Bg7 6.Nf3 Ne4 7.Bb2 =.

4.c4 e5 5.Bb2 (5.d4 ed4 6.Qd4 d6 7.Nf3+=; 5.Nf3 e4 6.Nd4 c5 7.Nc2+=; 5.d3 Bb4 6.Bd2 d5 7.cd5=) 5...d6 6.d4 Bg7 7.de5 =.

4.d4 A) 4...Bg7 5.Nd2 (5.Nf3 d5 6.e3 Bg4 7.h3=; 5.Bf4 d5 6.e3 Nh5 7.Bg5=; 5.e3 d5 6.Nf3 0–0 7.Be2=; 5.c4 0–0 6.Nc3 e5 7.de5=) 5...d5 6.Ngf3 0–0 7.c4=; B) 4...d5 5.Nf3 (5.e3 Bg7 6.Be2 Ne4 7.Nf3=; 5.Bf4 Bg7 6.e3 0–0 7.Be2=; 5.Nd2 Bg7 6.Ngf3 0–0 7.e3=; 5.c4 dc4 6.e3 Be6 7.Nd2=) 5...Bg7 6.e3 Bg4 7.Be2=.

4.e3 d5 5.Nf3 (5.d4 Bg7 6.Nf3 0–0 7.Be2=; 5.Be2 Bg7 6.Bb2 0–0 7.Nf3=) 5...Bg7 6.Bb2 0–0 7.Be2 =.

4.e3 d6 5.Nf3 (5.Be2 Bg7 6.Nf3 c5 7.0–0=; 5.d4 Bg7 6.Nf3 0–0 7.Bd3=; 5.Bb2 Bg7 6.Nf3 0–0 7.Be2=) 5...Bg7 6.d4 Bf5 7.Bd3 =.

4.e3 e5 5.Bb2 d6 6.Nf3 Bg7 7.Be2 =.

4.Nf3 d5 5.Bb2 (5.e3 Bg7 6.d4 Bg4 7.h3=) 5...Bg7 6.e3 0–0 7.Be2 =.

4.Nf3 d6 5.Bb2 (5.d4 Bg7 6.e3 0–0 7.Be2=; 5.e3 e5 6.Be2 Bg7 7.0–0=) 5...Bg7 6.e3 e5 7.Be2 =.

4.Bb2 Bg7

5.Nc3 0–0 6.Nf3 =.

5.Nc3 e5 6.Nf3 d6 7.e4 c5 (7...c5 8.Bc4 Nbd7+=; 7...0–0 8.Bc4=). Guenschmann – Mothes, corr SOK–89–32, 1989.

5.c4 b6 6.Nf3 Bb7 7.g3 0–0 8.Bg2 d6 9.0–0 Nbd7 10.Nc3 e6 11.d4 c5 12.dc5 (12.bc6 Bc6 13.d5 ed5+=) 12...dc5 13.e3 Qc7 14.Qe2 Rad8 15.Rfd1 h6 16.Rd2 Nh7 17.Rad1 Ndf6 18.Rd8 Rd8 19.Rd8 Qd8 20.Ne5 Bg2 21.Kg2 Ng5 22.Nc6 Qd7 23.Nd1 (23.e4!?+=) 23...Nfe4 24.Bg7 Kg7 25.Qb2 f6 26.Nc3?? (26.Qe2 Qd2 27.Qd2 Nd2 28.Na5 Ngf3= (28...ba5?? 29.b6+–)) 26...Qd2?? (better is 26...e5 27.g4 Qg4 28.Kf1 Qh3 29.Ke2 Qh2 30.Ne4 Ne4–+) 27.Qd2= Nd2 28.f4 Nf7–/+ 29.Nb8 Nc4 30.Nd7? Ne3–+ 31.Kf3 Nd5?? 32.Nd5+= ed5 33.Nb6 d4 34.Nd5?? Nd6–/+ 35.b6 Kf7 36.Nc7 Ke7 37.Nb5? Nb5?? 38.ab5 Kd7–+ 39.Ke4 f5 40.Kd3 a4 0–1. kannisogoet – wgwl, playok.com, 2012.

5.e3 0–0 6.Nf3 d5 7.Be2 =.

5.e4 d6 6.c4 0–0 7.f3 c6 8.d4 Nbd7 9.d5 cd5 10.cd5 Ne8 11.Bg7 Ng7 12.Ne2 f5 13.Qd4 Qb6 14.Qb6 Nb6 15.Nd4 Bd7 16.Bd3 Rac8 17.Kd2 fe4 18.Be4 Rc4 19.Nb3 Ra4 20.Ra4 Na4 21.Na5 Bb5 22.Nb7 Rb8 23.Na5 Nc5 24.Nc3 Bd7 25.Rb1 Rb1 26.Nb1 Ne8 27.Nc3 Nf6 28.Bc2 Na6 29.Nc6 Kf8 30.Nd8 Nc7 31.Bb3 Ke8 32.Nc6 (better is 32.Nb7!?=) 32...Ncd5!–/+ 33.Nd5 (33.Bd5 Nd5 Combination; 33.Nd5 Bc6 Remove defender) 33...Bc6 34.Nf6 ef6 35.Ke3 Ke7 36.g3 f5 37.f4 Kf6 38.Kd4 Ke7 39.Bd1 (39.Ke3 h6 40.h4–/+) 39...h6–/+ 40.h4 Kf6 41.Be2 g5 42.hg5 hg5 43.Bd1 gf4 44.gf4 Be4 45.Bb3 Kg6 46.Bd5 Bc2 47.Bc6 Kf6 ½–½. minas_morgul (1685) – heffalump (1655), gameknot.com, 2009.

5.Nf3 d5 6.Nc3 (6.e3 0–0=) 6...c6 (6...0–0 7.e3=) 7.bc6 (7.e3 0–0=) 7...bc6 (7...Nc6 8.e3=) 8.e3 Ba6 (8...Nbd7 9.Rb1=) 9.Ba6 (9.d3 Nbd7=) 9...Na6 10.0–0 (10.Rb1 Rb8=) 10...Nb4 (10...Rb8 11.Rb1=) 11.Ba3 (11.Rb1 0–0=) 11...0–0 12.Ng5 (12.d4 Qc7=) 12...Ne4 (12...h6 13.Nf3 Rb8+=) 13.Nce4 (13.Nge4 de4 14.Bb2 Qd7+=) 13...Ba1 (13...de4?! 14.c3 Qd5 15.Qg4+=) 14.Qg4? (better is 14.Qa1!? de4 15.Qe5+=) 14...de4 (14...Nc2 15.Qh4 h5 16.Ng3–/+) 15.Qh4 (15.Bb4 ab4 16.Qh4 h5 17.Ra1 Qd2 18.Ne4 Qc2 19.Qe7 b3 (19...Ra4?! 20.Nf6 Kg7 21.Nh5 gh5 22.Qg5 Qg6 23.Qg6 fg6 24.Ra4–+) 20.Nf6 Kh8 21.Nh5 gh5 22.Qe5 Kg8–+) 15...h5 16.Ra1? (16.Bb4 ab4 17.Ra1 e5–+) 16...e5 (better is 16...Nc2 17.Rc1 Na3 18.Ne4 Rb8–+) 17.Bb2 (17.Rc1 Rb8–/+) 17...Nc2 (17...Re8 18.g4 Qf6–/+ (18...Qd2 19.gh5 Ra7 20.Ne4 Qc2 21.hg6 fg6 22.Nf6 Kf7 23.Ne8+/–; 18...Nc2 19.gh5 Qf6 20.Rc1–/+)) 18.Rc1 (better is 18.Qe4!? Na1 19.Qe5–+) 18...Nb4–+ (18...Qd2 19.Ne4 Qb4 20.Be5+/–) 19.Qg3? (19.Rf1 Re8–+) 19...Nd3 20.Ba1 Nc1 21.Qe5 f6 22.Qe6 (22.Qe4 Ra7 23.Qg6 Rg7 24.Qg7 Kg7 25.Ne6 Kf7 26.Nd8 Rd8 27.Bc3 Ne2 28.Kf1 Nc3 29.dc3–+) 22...Kh8 (better is 22...Kg7 23.h3 Ne2 24.Kh2 Kh6 25.Ne4 Qb8 26.Ng3 h4–+) 23.Nf7+– Rf7 24.Qf7 Ne2 25.Kf1 (better is 25.Kh1 Rb8 26.Bf6 Qf6 27.Qf6 Kh7 28.h4+–) 25...Nc3= 26.Bc3 Qd3 27.Ke1 Qb1 28.Ke2 Qd3 29.Ke1 Qb1 30.Ke2 Qd3 31.Ke1 Qb1 32.Ke2 Qd3 ½–½. Nautiluschess – singingknight, ICS blitz, 2001.

5.g4 h6 6.Nf3 +=.

5.c4 0–0

6.e3 b6 7.Be2 (7.d4 Bb7=) 7...Bb7 (7...c5 8.Nf3=) 8.Bf3 (8.Nf3 c5=) 8...Bf3 (8...c6 9.d4=) 9.Qf3 c6 (9...Ra7 10.Ne2+=) 10.Ne2 Qc7 (10...d5 11.Bf6 Bf6 12.d4+=) 11.0–0 (11.Bf6 Bf6 12.d4 Ra7+=) 11...d5 (11...Rc8 12.Bf6 Bf6 13.d4+=) 12.cd5+= Nd5 13.Bg7 Kg7 14.Rc1 (14.Nbc3 Nc3 15.dc3 e5+=) 14...Nb4 (14...Rc8 15.d4+=) 15.d4+/– Qd6 (15...Rc8 16.Nd2+/–) 16.Nbc3 (better is 16.Nd2+/–) 16...Nd7 (better is 16...Rd8!?+/–) 17.Ne4+– Qd5? (better is 17...Qc7+–) 18.Nf4 Qb3 (18...Qf5 19.g4 Ne5 20.de5 Qe5 21.bc6 Rac8+–) 19.Nd2 (worse is 19.bc6 Nc6 20.Rc6 Rfc8+–) 19...Qb2 20.Nc4 (20.bc6?! Qd2 21.cd7 Rad8+–) 20...Qb3 (20...Qa1 21.Ra1 Rac8 22.Qe2+–) 21.Ra3 Qa3 22.Na3 cb5 23.Nb5 (23.Qb7 Rfd8 24.Nb5 Kg8+–) 23...e5 (23...Rac8 24.Rc7 Rc7 25.Nc7+–) 24.de5 Ne5 (24...Rac8 25.Rb1 Ne5 26.Qb7+–) 25.Qg3 (better is 25.Qe4!? Rae8 26.Nc7 Re7+–) 25...Rad8 (25...Kg8+–) 26.Nh5 (26.Nh5 Kg8 27.Qe5 gh5 28.Nd6 Rd6 29.Qd6+–) 1–0. Woelfelschneider,Peter – Wartig,Wolfgang, corr SOK–96–119, 1997.

6.e3 d6 7.d4 =.

6.Nf3 d6 =.

5.Nf3 0–0

6.c4 d6 7.Nc3 b6 (7...Nbd7 8.d4=) 8.g3= Bb7 9.Bg2 e5 10.e4 (better is 10.0–0!?=) 10...Ne4–/+ 11.d3 Nc3 12.Bc3 Nd7 13.0–0 e4 14.Nd4 Nc5 15.de4 Be4 16.Re1 Bg2 17.Kg2 Qd7 18.Qf3 Rae8 19.Nc6 Bc3 20.Qc3 f5 21.f3 Qg7 22.Qd2 Kh8 23.Re8 Re8 24.Re1 Re1 25.Qe1 h6 (worse is 25...Na4 26.Qe8 Qg8 27.Qe7+=) 26.Qe8 Kh7 27.Nd8 h5 (27...Qb2 28.Kh3 Qe5 (28...Na4?! 29.Ne6 Qf6 30.Qd7 Kg8 31.Qc8 Kf7 32.Nc7=) 29.Qf7 Qg7–/+) 28.Ne6+= Ne6 29.Qe6 Qe5 30.Qf7 Qg7 31.Qg7 (better is 31.Qe6!?=) 31...Kg7–/+ 32.Kf2 Kf6 33.Ke3 g5 34.Kd4 Ke6 35.h3 Ke7 36.Kd5 Kd7 37.g4 fg4 38.fg4 h4 39.Kd4?? (better is 39.Ke4 c6 40.bc6 Kc6 41.Kd4=) 39...Ke8?? (39...c6 40.bc6 Kc6–/+) 40.Kd5 ½–½. Zampier,Alexandre – Santos,RenA (2185), Maringa BRA, 3rd Open, 2013.

6.e3 d5 7.c4 (7.Be2 Bg4=) 7...c5 (7...dc4 8.Bc4 Nbd7 9.d4=) 8.cd5 (8.d4 Nbd7=) 8...Nbd7 (8...Qd5 9.d4=) 9.Qc2 Nd5 10.Bg7 Kg7 11.Bc4 (11.Be2 e5=) 11...Nb4 (11...N5f6 12.0–0=) 12.Qc3+= Nf6 13.0–0 Kg8 (13...Bf5 14.d3+=) 14.d3 b6 (14...Bf5 15.Ne5+=) 15.Nbd2 Bb7 (15...Bf5 16.e4 Bg4 17.Rfe1+=) 16.Rfd1 e6 (16...Qd6 17.d4+=) 17.Ne4 (17.Rac1 Rc8+=) 17...Be4 18.de4 Qe7 (18...Ne4? 19.Qe5 Qf6 20.Qe4+–) 19.Qe5 (19.Nd2 Rad8+=) 19...Rfd8 20.Qf4 Kg7 21.g4 (21.e5 Rd1 22.Rd1 Nfd5=) 21...h6= 22.h4 (22.g5 hg5 23.Ng5 Rd1 24.Rd1 Rh8+=) 22...h5 (22...Qb7 23.Nd2=) 23.g5 Ng4 24.Nh2 Nh2 25.Kh2 Kg8 (25...e5 26.Qf3=) 26.e5 Nd5 27.Qe4 (27.Qf3 Qc7 28.Qg3 Nc3 29.Rd8 Rd8=) 27...Nc3 28.Rd8 Rd8 (worse is 28...Qd8 29.Qc2 Nd5 30.Rd1+/–) 29.Qc2 Nd5 30.Rd1 Qc7 31.Qb2 (31.Kg1 Rd7 32.Qe4 Ne7=) 31...Ne7 32.Rd8 Qd8 33.Qe2 Nf5 34.Kh3 Kf8 ½–½. Krueger,Jan – Zylla,Johannes (2225), corr ICCF WSTT/3/06/2, 2006.

6.g3 d5 7.Bg2 c6 8.bc6 bc6 9.0–0 Nbd7 10.d3 (10.Na3 Nb6=) 10...Rb8+= 11.Ba3 (11.Bc3 Nc5+=) 11...Re8 12.Nbd2 Nb6 (12...e5 13.e4+=) 13.Rb1 (13.Bb2 Bg4=) 13...Bd7 (13...e5 14.Bc5+=) 14.c4= dc4 15.Nc4 Nc4 16.dc4 Qc7 17.Rb8 Qb8 18.Nd4 Qc7 (18...Qb6 19.Nb3=) 19.e3 (19.Qd2 Qb6+=) 19...Bf8 (19...c5 20.Nb5 Qb6 21.Qe2=) 20.Qd2 (20.Qf3 Rc8+=) 20...Rd8 (20...Rb8 21.f4=) 21.Rd1 (21.Nb3 Ra8+=) 21...Bg4= 22.f3 e5? (22...Bc8 23.f4 c5–+) 23.Bf8+/– Kf8 24.fg4+– ed4 25.ed4 Ng4+/– 26.d5 cd5 27.cd5 Re8 28.d6+/– Qc5 29.Kh1?? Nf2–+ 30.Kg1 Nd1 31.Kh1 Nf2 (31...Nf2 32.Qf2 Qf2 33.h4 Re2 34.Kh2 Qg2) 0–1. hsingletary (1750) – rudy (1725), net–chess.com, 2001.

6.g3 d6 7.c4 e5 8.d3 Re8 9.Bg2 Nbd7 10.0–0 Nc5 11.Nbd2 e4 12.de4 Nce4 13.e3 Bg4 14.Qc2 Bf5 15.Nd4 Ng3 16.Nf5+/– Nf5 17.Bb7 Rb8 18.Bc6 Rf8 19.Nb3 Ne7? 20.Na5+– Nd7 21.Bg7 Kg7 22.Bg2 Nb6 23.Nc6 Nc6 24.Bc6 Nc8 25.a5 Na7 26.Bd5 Nc8 27.Qc3 Kg8 28.Rfb1 Qg5 29.Bg2 Re8 30.a6 Nb6 31.a7 Rbd8 32.Kh1 d5 33.c5 Na8 34.b6 (34...cb6 35.cb6 Nb6 36.Rb6+–) 1–0. CHED – StephenHilton, internet, 2006.

4.c4 Bg7

5.Bb2 d6 6.d4 0–0 7.Nf3 =.

5.d4 0–0 6.Nf3 d6 7.e3 =.

5.e3 0–0 6.d4 d6 7.Nf3 =.

5.Nf3 0–0 6.d4 c5 7.bc6 =.

4.e3 Bg7

5.Bb2 0–0 6.c4 d6 7.f4 Nbd7 8.Nf3 b6 9.Qc2 Nc5 10.d4 Bf5=+ 11.Qd1 Nce4 12.Nbd2 Ng4 13.Ne4 Ne3? 14.Qe2 Nc4 15.Nf2 Nb2 16.Qb2 Rc8 17.Rc1 Re8 18.Be2 Bd7 19.0–0 e6 20.Nd3 Qf6 21.Qd2 c6 22.Nb2 Bh6 23.Ng5 cb5 24.Bb5 Bb5 25.ab5 e5 26.Rc8+– Rc8 27.Ne4 Qe6+/– 28.de5 de5 29.Qd6 ef4 30.Qe6 fe6 31.Nf6 Kg7 32.Nd7 Rc7 33.Nb6 Rc5 34.Nd3 Rb5 35.Nc4 a4 36.Ra1 Rd5 37.Nde5 Kf6 38.Ra4 Re5= 39.Ne5 Ke5 40.Kf2 Bf8 41.Kf3 g5 42.Kg4 h6 43.Ra8 Bg7 44.Rg8 Kf6 45.h3 e5 46.Kf3 h5 47.Ke4 g4 48.h4 Kf7 49.Rb8 Bf6 ½–½. Tischer,Joachim – Schutt, corr, 1973.

5.Bb2 0–0 6.Nf3 d6 7.Be2 =.

5.Nf3 Ne4 6.Ra2 d5 7.Bb2 =.

4.Nf3 Bg7

5.Bb2 0–0 6.e3 d5 7.Be2 =.

5.Nc3 0–0 6.e3 c5 7.Ba3 =.

5.d4 0–0 6.e3 d5 7.Bd3 =.

5.e3 Ne4 6.Ra2 0–0 7.Bb2 =.

3.Bb2 a4

4.c4 d5 5.cd5 Qd5 6.Bf6 ef6 7.Nc3 Qe5 8.Nf3 Qc5 9.e3 Be6 10.Na4 Qa3 11.Nc3 Bb4 12.Qc1 Bc3 13.Qc3 Qc3 14.dc3 Ra2 15.Ra2 Ba2 16.c4 Ke7 17.Bd3 Rd8 18.Ke2 Nd7 19.Ra1 Ra8 (19...Nc5 20.Ra2 Rd3 21.Nd4+=) 20.Ne1 (20.Ke1!? Nb6 21.Nd2+/–) 20...Nb6 21.c5 Nd5 (21...Nd7 22.Rc1+=) 22.Kd2 Nb4 23.Bb1 (23.Kc3 Nd3 24.Nd3 Ra3 25.Kd2 Ra8+/–) 23...Rd8+= 24.Kc3 Bb1 25.Kb4 Bf5 26.Nf3 Be4 27.Kc3 Rd3 28.Kc4 Rd8 29.Ra7 Rb8 (better is 29...f5+=) 30.c6?? (30.Nh4 h5+/–) 30...Kd6 (better is 30...bc6!? 31.Nd4 Kd6 32.bc6 Bd5 33.Kc3 g6+=) 31.cb7 Rb7 32.Rb7 Bb7 33.Ne1 g5 34.g3 Ke5 35.Kd3 Be4 36.Kc3 Bb7 37.f3 h5 38.h3 Bc8 39.g4 hg4 40.hg4 f5 41.gf5 Bf5 42.Kc4 g4 43.fg4 Bg4 44.Kc5 Bd7 45.Nc2 Ke4 46.b6 cb6–/+ 47.Kb6 Kd3 48.Kc7 Bf5 49.Nd4= Be4 50.Kd6 Ke3 51.Ke7 Kd4 52.Kf7 ½–½. tyop (1825) – mitica00 (1720), playok.com, 2012.

4.a3 d5

5.e3 Nbd7 6.Nf3 e6 7.c4 Nb6 8.cd5 Nfd5 9.Be2 Nd7 10.0–0 Nc5 11.d4 Nb3 12.Ra2 Bd6 13.Nfd2 Nd2 14.Qd2 Qh4 15.g3 Qh3 16.Bf3 b6?? 17.Bg2 Qh6 18.Nc3 Bb7+= 19.Nd5 Bd5 20.Bc1 Rc8 21.e4 Ba2 22.Qh6?? gh6–+ 23.Bh6 Bc4 24.Rc1 Bb3 25.Rc6 Ba3 26.e5 Bf8 27.Bg5 Be7 28.Bf6 Bf6 29.ef6 Rg8 30.h4 Rg6 31.Be4 Rf6 32.Bh7 Ke7 33.Be4 a3 34.Bc2 a2 35.Bb3 a1Q 36.Kg2 Qb2 37.Rc2 Qb3 38.Re2 Qd3 39.Kf1 Ra8 (40.Kg2 Qf3 41.Kh2 Ra1 42.Re6 Re6 43.h5 Rh1#) 0–1. ZMeB4 (1685) – 0202 (1630), caissa.com, 2007.

4.c4 e6

5.a3 c6 6.Nc3 cb5 7.Nb5 Nc6 8.Qc2 A) 8...d5 A1) 9.cd5 ed5 10.Nf3 Be7 11.e3 0–0 12.Bd3 g6 13.0–0 Bg4 14.Nbd4 Qd7; A2) 9.e3 Be7 10.cd5 ed5 11.Nf3 0–0 12.Bd3 g6 13.0–0 Bg4 14.Nbd4 Qd7; A3) 9.Rc1 Be7 10.Nf3 0–0 11.e3 Ne4 12.Be2 Bd7 13.0–0 Qb6 14.Rb1 f5; A4) 9.h4 Be7 (9...Bd7 10.Nf3 Na5 11.Qa4 Rc8 12.d3 Nc4 13.dc4 Rc4 14.Qb3 Qa5; 9...dc4 10.Nf3 Na5 11.Be5 Nd5 12.e4 Bd7 13.Nfd4 Nc6 14.Nc6 bc6; 9...Ne4 10.Nf3 Bd7 11.h5 h6 12.Rc1 Na5 13.cd5 Bb5 14.Qe4 Qd5; 9...h6 10.Nf3 Be7 11.e3 0–0 12.Rc1 Ne4 13.Bd3 f5 14.h5 Bd7; 9...Qb6 10.Nf3 dc4 11.Qc4 Be7 12.e3 0–0 13.Be2 Nd5 14.0–0 Bd7) 10.h5 h6 11.Nf3 0–0 12.e3 Bd7 13.Rc1 Na5 14.cd5 ed5; A5) 9.Nf3 Be7 10.cd5 ed5 11.e3 0–0 12.Bd3 g6 13.0–0 Bg4 14.Nbd4 Qd7; B) 8...Be7 B1) 9.Nf3 d5 (9...0–0 10.e3 d5 11.Be2 Bd7 12.Rb1 Na5 13.cd5 ed5 14.0–0 Ne4) 10.cd5 ed5 11.e3 0–0 12.Bd3 g6 13.0–0 Bg4 14.Nbd4 Qd7; B2) 9.h3 d5 (9...0–0 10.Nf3 d5 11.e3 Na5 12.cd5 Nb3 13.Rd1 ed5 14.Nfd4 Be6) 10.Nf3 0–0 11.e3 Ne4 12.Be2 f5 13.0–0 dc4 14.Bc4 Bd7; B3) 9.Rc1 0–0 (9...d5 10.Nf3 0–0 11.e3 Ne4 12.Be2 Bd7 13.0–0 Qb6 14.h3 Rfc8) 10.Nf3 d5 11.e3 Ne4 12.Be2 Bd7 13.0–0 Qb6 14.Rb1 f5; B4) 9.g4 h6 (9...Qb6 10.g5 Ng4 11.e3 0–0 12.Nf3 f6 13.Bd3 Kh8 14.Bh7 d5; 9...0–0 10.g5 Ne8 11.Nf3 Bg5 12.Ng5 Qg5 13.h4 Qg6 14.Qc3 d5; 9...d5 10.g5 Nh5 11.e3 0–0 12.Be2 g6 13.Qc3 f6 14.Nf3 Bd7) 10.Nf3 d5 11.h4 Kf8 12.Bh3 Qb6 13.0–0 Kg8 14.d3 e5; B5) 9.e3 0–0 (9...d5 10.cd5 ed5 11.Nf3 0–0 12.Bd3 g6 13.0–0 Bg4 14.Nbd4 Qd6) 10.Nf3 d5 11.Be2 Bd7 12.h4 h6 13.0–0 Na5 14.cd5 Bb5.

5.a3 c6 6.Nc3 cb5 7.Nb5 Nc6 8.Nf3 Be7 (8...d5 9.Bf6 (9.cd5 ed5 10.Bf6 gf6 11.e3 Bg4 12.h3 Bf5 13.Nbd4 Bd7 14.Qc2 Nd4; 9.e3 Be7 10.Be2 0–0 11.0–0 Bd7 12.Rb1 Ne4 13.Qc2 Na5 14.d3 Bb5; 9.g3 Be7 10.Qc2 0–0 11.e3 Ne4 12.Be2 f5 13.0–0 dc4 14.Bc4 Bd7; 9.Rc1 Be7 10.e3 0–0 11.Be2 Ne4 12.0–0 Qb6 13.Qc2 Bd7 14.Rb1 f5) 9...gf6 10.e3 Bg7 11.cd5 ed5 12.Rc1 0–0 13.Bd3 Ne5 14.Qc2 Nd3; 8...Bc5 A) 9.e3 0–0 10.Qc2 d6 11.d4 Bb6 12.Bd3 Ba5 13.Nc3 e5 14.0–0 ed4; B) 9.Qc2 d6 (9...0–0 10.e3 Qe7 11.Be2 d6 12.0–0 Bd7 13.Bf6 gf6 14.Rfb1 Na5; 9...h6 10.e3 0–0 11.Be2 Be7 12.0–0 d5 13.Rab1 Bd7 14.h3 dc4; 9...Na5 10.Be5 d6 11.Bf6 gf6 12.Qa4 0–0 13.d4 Bb6 14.e3 Qe7; 9...Ra6 10.e3 0–0 11.Be2 b6 12.0–0 Bb7 13.h3 h6 14.Rab1 Ra8; 9...g6 10.e3 0–0 11.Be2 Be7 12.0–0 d5 13.h3 Bd7 14.Rac1 Ne4; 9...h5 10.e3 0–0 11.Be2 Be7 12.Ng5 g6 13.Bd3 e5 14.f4 d6) 10.d4 Bb6 11.e3 Ba5 12.Nd2 0–0 13.Bd3 Qe7 14.0–0 Bd7; C) 9.d4 Be7 (9...Bb6 10.Nd6 Kf8 11.Qd2 Ba5 12.Bc3 Bc7 13.Nb5 Ne4 14.Qc2 Nc3; 9...Ba7 10.Nd6 Ke7 11.c5 Bb8 12.e4 Qa5 13.Qd2 Qd2 14.Nd2 Bc7; 9...Bf8 10.e3 d5 11.Qc2 Be7 12.Bd3 0–0 13.0–0 dc4 14.Bc4 Bd7) 10.d5 ed5 11.cd5 Ra5 12.Qd3 Qb6 13.e3 Na7 14.Na7 Ra7) 9.e3 (9.Qc2 0–0 (9...d5 10.cd5 ed5 11.e3 0–0 12.Bd3 h6 13.0–0 Bg4 14.Nbd4 Nd4) 10.e3 d5 11.Bd3 dc4 12.Bc4 Na5 13.Qa4 Nc4 14.Qc4 Bd7) 9...0–0 (9...d5 10.Be2 0–0 11.0–0 Bd7 12.Rb1 dc4 13.Bc4 Nd5 14.Qc2 Rc8) 10.Qc2 (10.Be2 d5 11.0–0 Bd7 12.Rb1 Ne4 13.Qc2 Qb6 14.h3 f5) 10...d5 11.Be2 Bd7 (11...Na5 12.cd5 ed5 13.Qa4 Bd7 14.Bd4 Ne4) 12.Rc1 Na5 (12...Ne4 13.0–0 Qb6 14.Rb1 f5) 13.cd5 Nd5 (13...ed5 14.Nfd4 Rc8) 14.Qa4 Nb6 (14...f5+/–) 15.Qe4 Rc8 16.Rc8 Qc8? (better is 16...Nc8 17.0–0 Bb5+/–) 17.Qd4+– Bc5 (17...Bf6 18.Qb6 Bb2 19.Qa5 Qc1 20.Bd1 Qc5+–) 18.Qg7 1–0. usingprogram – 1ominut, internet, 2011.

5.a3 c6 6.Nc3 cb5 7.Nb5 Be7 8.e4 (8.Nf3 0–0=) 8...0–0 9.e5 Ne8 10.Nc3 Qa5 11.f4 f6 12.ef6 Nf6 13.Bd3 d5 14.g3 e5 15.fe5+/– Ng4 16.Nd5+– Bc5 17.Nh3 Nc6 18.Qc2 Nge5 19.Bh7 Kh8 20.Nhf4 Bg4 21.Be5+– Ne5 22.Be4 Rae8 23.Kf1 g5 24.h3= Bd7 25.Kg2 Nc6?? (Better is 25...gf4 26.Nf4 b5–/+) 1–0. Niculae,C – Bach,Gino (2105), Bucharest op, 1995.

5.a3 d5 6.cd5 ed5 7.Nc3 =+.

5.Nc3 a3 6.Bc1 d5 =+.

5.a3 b6

6.Qc2 Bb7 A) 7.Nf3 d5 (7...d6 8.Nc3 Nbd7 9.d4 Qe7 10.Rd1 g6 11.e4 Bh6 12.Bd3 0–0; 7...Be7 8.Nc3 d6 9.e3 0–0 10.d4 Nbd7 11.Bd3 e5 12.0–0 g6; 7...g6 8.Nc3 Bg7 9.g3 0–0 10.Bg2 d5 11.cd5 ed5 12.0–0 c5; 7...Bd6 8.Nc3 Qe7 9.e3 0–0 10.Be2 h6 11.0–0 Re8 12.Na4 e5) 8.e3 Nbd7 9.Nc3 Bd6 10.cd5 ed5 11.Be2 0–0 12.Na4 Qe7 ; B) 7.e3 d5 (7...d6 8.Nc3 Nbd7 9.d4 d5 10.Nf3 Bd6 11.Bd3 dc4 12.Bc4 0–0; 7...Be4 8.d3 Bb7 9.Nc3 Bd6 10.Nf3 0–0 11.Be2 Re8 12.Na4 Be7; 7...Ne4 8.Nc3 Nc5 9.Nf3 Bd6 10.d4 Nb3 11.Rd1 Qe7 12.Na4 Ra4; 7...h5 8.Nc3 d6 9.Nf3 Nbd7 10.d4 Be7 11.Bd3 h4 12.h3 Ra7) 8.Nf3 Bd6 9.Nc3 0–0 10.cd5 ed5 11.Be2 Nbd7 12.Na4 Qe7; C) 7.Nc3 d6 (7...d5 8.Nf3 Bd6 9.cd5 ed5 10.e3 0–0 11.Be2 Nbd7 12.0–0 Qe7; 7...Bd6 8.Nf3 0–0 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...h6 8.Nf3 d6 9.d4 Nbd7 10.e4 Nh5 11.g3 Be7 12.Bg2 0–0; 7...g6 8.Nf3 d6 9.g3 Nbd7 10.Bg2 Ne5 11.Na4 Nf3 12.Bf3 Bf3) 8.Nf3 Nbd7 9.d4 Qe7 10.e3 g6 11.Bd3 Bg7 12.e4 e5.

6.Qc2 d6 A) 7.Nf3 Nbd7 (7...Bb7 8.Nc3 Nbd7 9.d4 Qe7 10.e4 g6 11.Bd3 Bg7 12.0–0 0–0; 7...Be7 8.d4 Nbd7 9.Nc3 Bb7 10.e3 0–0 11.Bd3 g6 12.0–0 e5; 7...g6 8.g3 Bb7 9.Bg2 Nbd7 10.Nc3 Ne5 11.Na4 Nf3 12.Bf3 Bf3; 7...h6 8.d4 Bb7 9.Nc3 Be7 10.e3 Nbd7 11.Bd3 0–0 12.0–0 Ra7) 8.d4 Bb7 9.Nc3 Qe7 10.Rd1 g6 11.g3 Bg7 12.Bg2 0–0; B) 7.d4 g6 (7...Nbd7 8.Nc3 g6 9.Nf3 Bg7 10.g3 Bb7 11.Bg2 0–0 12.0–0 Qe7; 7...Bb7 8.Nc3 g6 9.Nf3 Nbd7 10.e4 Bg7 11.Bd3 0–0 12.0–0 e5; 7...Qe7 8.Nf3 Nbd7 9.Nc3 Bb7 10.e4 g6 11.Bd3 Bg7 12.0–0 0–0; 7...c5 8.dc5 dc5 9.Nc3 Bb7 10.Nf3 Nbd7 11.Rd1 Qc7 12.e3 Bd6) 8.Nc3 Nbd7 9.Nf3 Bg7 10.g3 0–0 11.Bg2 Bb7 12.0–0 Qe7 ; C) 7.e3 Nbd7 (7...Be7 8.Nc3 0–0 9.Nf3 Bb7 10.d4 Nbd7 11.Bd3 g6 12.0–0 e5; 7...Bb7 8.Nc3 Nbd7 9.d4 g6 10.Nf3 Bg7 11.Be2 0–0 12.Rd1 Qe7; 7...e5 8.Be2 Nbd7 9.Nc3 Nc5 10.Bf3 Ra7 11.Nge2 Be6 12.d4 e4; 7...g6 8.Nc3 Nbd7 9.Nf3 Bb7 10.Na4 Bg7 11.Be2 0–0 12.0–0 e5) 8.d4 Be7 9.Nf3 0–0 10.Nc3 Bb7 11.Bd3 g6 12.0–0 e5; D) 7.Nc3 Bb7 (7...Nbd7 8.d4 Qe7 9.Nf3 Bb7 10.Rd1 g6 11.g3 Bg7 12.Bg2 0–0; 7...Be7 8.Nf3 Bb7 9.e3 0–0 10.d4 Nbd7 11.Bd3 g6 12.0–0 e5; 7...h6 8.Nf3 Nbd7 9.d4 Be7 10.e3 0–0 11.Bd3 Bb7 12.0–0 Ra7; 7...g6 8.Nf3 Bb7 9.e4 Bg7 10.d4 0–0 11.Bd3 Nbd7 12.0–0 e5) 8.Nf3 Nbd7 9.d4 Qe7 10.e3 g6 11.Bd3 e5 12.e4 ed4.

6.Qc2 Bd6 A) 7.e3 Bb7 (7...0–0 8.Nf3 Bb7 9.Nc3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...Qe7 8.Nc3 0–0 9.Nf3 Bb7 10.Be2 h6 11.0–0 Re8 12.Nd4 c5; 7...g6 8.Nf3 0–0 9.Nc3 Bb7 10.Be2 Be7 11.0–0 d6 12.Na4 Nbd7; 7...Be7 8.Nc3 Bb7 9.Nf3 0–0 10.Be2 d6 11.0–0 Nbd7 12.d4 h6) 8.Nc3 Ng4 9.Nf3 0–0 10.Na4 f5 11.c5 Be7 12.h3 Nf6; B) 7.Nc3 0–0 (7...Bb7 8.Nf3 0–0 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...e5 8.Nf3 Bb7 9.e4 0–0 10.Bd3 Re8 11.0–0 Nh5 12.Na4 Nf4; 7...h6 8.Na4 0–0 9.c5 Be7 10.Nf3 d5 11.Ne5 Nbd7 12.Nc6 Qe8; 7...h5 8.Nf3 Bb7 9.e3 h4 10.h3 Rh5 11.Be2 Kf8 12.0–0 Kg8) 8.Nf3 Bb7 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; C) 7.e4 Bc5 (7...Nh5 8.Nf3 Bb7 9.Nc3 0–0 10.g3 g5 11.h3 f5 12.Be2 Bg3; 7...Be7 8.Nf3 d6 9.Nc3 Nbd7 10.d4 0–0 11.Be2 Bb7 12.0–0 h6; 7...Ng4 8.Nf3 Bb7 9.h3 Nh6 10.Bg7 Rg8 11.Bh6 f5 12.e5 Bf3; 7...e5 8.Nf3 0–0 9.Nc3 Re8 10.Bd3 Bb7 11.0–0 Nh5 12.Na4 Nf4) 8.d4 Be7 9.Nf3 0–0 10.Nc3 Bb7 11.Bd3 Nh5 12.Bc1 d6; D) 7.h4 Bb7 (7...0–0 8.Nc3 Bb7 9.Nf3 e5 10.e3 Qe7 11.Be2 h6 12.Na4 Re8; 7...Qe7 8.Nc3 0–0 9.Nf3 Bb7 10.e3 Ng4 11.Na4 f5 12.Be2 Ra7; 7...g6 8.Nf3 Bb7 9.Nc3 0–0 10.Na4 Qe7 11.e3 Be4 12.d3 Bb7; 7...e5 8.Nc3 Bb7 9.Nf3 e4 10.Nd4 Be5 11.e3 0–0 12.Na4 c5) 8.Nf3 Qe7 9.Nc3 0–0 10.e3 Ng4 11.Na4 f5 12.Bd3 Ra5; E) 7.Nf3 Bb7 (7...g6 8.Nc3 Bb7 9.e4 Be7 10.d4 0–0 11.Bd3 d6 12.0–0 Nbd7; 7...0–0 8.Nc3 Bb7 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...Ra5 8.e3 Bb7 9.Nc3 0–0 10.Be2 Qe7 11.Na4 h6 12.0–0 e5; 7...Ra7 8.Nc3 Bb7 9.e3 0–0 10.Be2 h6 11.Na4 Qe7 12.0–0 e5) 8.Nc3 0–0 9.e3 Be7 10.d4 c5 11.Bd3 cd4 12.ed4 d5.

6.Qc2 Be7 A) 7.Nc3 0–0 (7...d5 8.Nf3 0–0 9.cd5 ed5 10.e3 Qd6 11.d4 c5 12.dc5 bc5; 7...d6 8.Nf3 Bb7 9.e3 Nbd7 10.d4 0–0 11.Bd3 g6 12.0–0 e5; 7...Bb7 8.Nf3 0–0 9.e3 g6 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...g6 8.Nf3 0–0 9.g3 d5 10.Bg2 Nbd7 11.Na4 Bb7 12.cd5 ed5) 8.g3 Bb7 9.Nf3 d5 10.cd5 Nd5 11.Bg2 Nd7 12.Na4 Ra5; B) 7.e3 d5 (7...0–0 8.Nc3 d6 9.Nf3 e5 10.Be2 Nbd7 11.d4 Bb7 12.0–0 Ra5; 7...Bb7 8.Nc3 0–0 9.Nf3 d5 10.cd5 ed5 11.Be2 Bd6 12.0–0 Nbd7; 7...d6 8.Nc3 0–0 9.Nf3 Nbd7 10.d4 Bb7 11.Bd3 g6 12.0–0 e5; 7...g6 8.Nc3 0–0 9.Nf3 d5 10.Na4 Nbd7 11.cd5 ed5 12.Be2 Bb7) 8.Nc3 0–0 9.cd5 ed5 10.Nf3 Qd6 11.Na4 Nbd7 12.Be2 Ne4; C) 7.h4 Bb7 (7...d6 8.Nc3 Bb7 9.Nf3 Nbd7 10.Na4 0–0 11.e3 h6 12.Be2 Ng4; 7...0–0 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 Bb7 11.e3 h6 12.Be2 Ng4; 7...d5 8.Nf3 Nbd7 9.Nc3 0–0 10.Na4 Bb7 11.cd5 Bd5 12.e3 Ne4; 7...h6 8.Nf3 0–0 9.Nc3 Bb7 10.g3 d6 11.Bg2 Nbd7 12.Na4 Ra5) 8.Nc3 d6 9.Nf3 Nbd7 10.Na4 0–0 11.e3 h6 12.Be2 Ng4; D) 7.d3 d5 (7...0–0 8.Nc3 Bb7 9.Nf3 d5 10.cd5 Nd5 11.e4 Nc3 12.Bc3 Nd7; 7...Bb7 8.Nf3 d6 9.Nc3 Nbd7 10.g3 Nc5 11.Bg2 0–0 12.0–0 d5; 7...d6 8.g3 Bb7 9.Nf3 Nbd7 10.Bg2 Nc5 11.Nc3 Nb3 12.Rd1 Nd4; 7...h6 8.Nf3 0–0 9.Nc3 d5 10.cd5 ed5 11.e4 Bb7 12.e5 Nh5) 8.Nf3 0–0 9.Nc3 Nbd7 10.Na4 dc4 11.Qc4 Bb7 12.h3 Ne8 ; E) 7.Nf3 0–0 (7...d5 8.cd5 ed5 9.Nc3 0–0 10.e3 Bb7 11.Na4 Bd6 12.Be2 Qe7; 7...Bb7 8.Nc3 d6 9.e3 Nbd7 10.d4 e5 11.Bd3 0–0 12.0–0 g6; 7...d6 8.Nc3 0–0 9.e3 h6 10.d4 c5 11.bc6 Nc6 12.Bd3 Bd7; 7...g6 8.Nc3 Bb7 9.g3 d6 10.Bg2 Nbd7 11.Na4 0–0 12.0–0 Ra7 ) 8.Nc3 d5 9.cd5 ed5 10.e3 Nbd7 11.Na4 Ne4 12.Be2 Bd6.

6.Qc2 g6 A) 7.Nc3 d6 (7...Bb7 8.Nf3 Bg7 9.g3 d6 10.Bg2 Nbd7 11.Na4 0–0 12.0–0 Ra5; 7...Bg7 8.g3 0–0 9.Bg2 d5 10.Nh3 Bb7 11.0–0 Nbd7 12.d4 Ra7; 7...Be7 8.Nf3 0–0 9.g3 Bb7 10.Bg2 d5 11.cd5 ed5 12.0–0 Nbd7; 7...Bh6 8.Nf3 0–0 9.h4 Bg7 10.Na4 Bb7 11.g3 d6 12.Bg2 Nbd7) 8.Nf3 Nbd7 9.g3 Bg7 10.Bg2 Bb7 11.Na4 0–0 12.0–0 Ra7; B) 7.Nf3 Bb7 (7...Bg7 8.Nc3 0–0 9.g3 d5 10.Bg2 Bb7 11.cd5 Nd5 12.Na4 Bb2; 7...Bd6 8.Nc3 Bb7 9.e3 0–0 10.Be2 Be7 11.0–0 d6 12.Na4 Ra7; 7...Be7 8.Nc3 Bb7 9.g3 d5 10.cd5 ed5 11.Bg2 0–0 12.0–0 Nbd7; 7...Bh6 8.g4 g5 9.h4 Rg8 10.hg5 Bg5 11.Ng5 Rg5 12.Rh6 Rg6) 8.Nc3 d6 9.g3 Nbd7 10.Bg2 Bg7 11.0–0 0–0 12.Na4 Ra5 ; C) 7.e4 d6 (7...Bg7 8.Nc3 Bb7 9.Nf3 0–0 10.d4 d6 11.Be2 Nbd7 12.Rd1 Qe7; 7...Bb7 8.Nc3 d6 9.Nf3 Bg7 10.d4 0–0 11.Bd3 Nbd7 12.0–0 e5; 7...Be7 8.Nc3 d6 9.Nf3 0–0 10.Be2 Nbd7 11.d4 e5 12.0–0 Bb7; 7...Bh6 8.e5 Nh5 9.Nc3 Bb7 10.Nf3 0–0 11.c5 bc5 12.Ne4 d6) 8.Nc3 Bh6 9.Nf3 Nbd7 10.d4 0–0 11.Be2 Bb7 12.0–0 Re8 ; D) 7.h4 d6 (7...Bb7 8.Nc3 Bg7 9.Nf3 d6 10.d4 Nbd7 11.e3 0–0 12.Be2 Re8; 7...Bg7 8.Nc3 Bb7 9.Nf3 d6 10.e3 0–0 11.Be2 Nbd7 12.0–0 Ng4; 7...Be7 8.Nc3 Bb7 9.Nf3 0–0 10.g3 d5 11.cd5 ed5 12.Bg2 d4; 7...Qe7 8.h5 gh5 9.Rh5 Rg8 10.Rh4 h5 11.Nc3 Rg4 12.Nf3 Bb7) 8.Nf3 Bb7 9.Nc3 Bg7 10.d4 Nbd7 11.e3 0–0 12.Be2 Re8 ; E) 7.e3 Bb7 (7...Qe7 8.Nc3 Bb7 9.Nf3 Bg7 10.Be2 0–0 11.0–0 d6 12.Na4 e5; 7...d6 8.Nc3 Bg7 9.Nf3 Bb7 10.Be2 Nbd7 11.0–0 e5 12.Na4 0–0; 7...Bg7 8.Be2 d6 9.Nc3 0–0 10.Nf3 Nbd7 11.0–0 Bb7 12.Na4 e5; 7...Be7 8.Nc3 0–0 9.Nf3 d5 10.Na4 Nbd7 11.Be2 Bb7 12.0–0 c5) 8.Nc3 Bg7 9.Nf3 d6 10.Be2 Nbd7 11.0–0 0–0 12.Na4 e5.

6.Nc3 Bb7 7.Nf3 (7.Qc2 d6 (7...Be7 8.Nf3 0–0 9.e3 d5 10.cd5 Nd5 11.Bd3 f5 12.0–0 Nd7 ; 7...h6 8.Nf3 d6 9.d4 Be7 10.e3 Nbd7 11.Bd3 0–0 12.0–0 e5; 7...g6 8.Nf3 d6 9.e3 Nbd7 10.d4 Bg7 11.Be2 0–0 12.0–0 e5; 7...Bd6 8.Nf3 0–0 9.g3 Ng4 10.Na4 Ne5 11.Bg2 Bf3 12.Bf3 Nf3) 8.Nf3 Be7 9.d4 0–0 10.e3 Nbd7 11.Bd3 g6 12.0–0 e5; 7.e3 d5 (7...d6 8.Na4 Nbd7 9.Nf3 Be7 10.Be2 0–0 11.0–0 Ne4 12.Qc2 h6 ; 7...Be7 8.Nf3 0–0 9.Na4 h6 10.Be2 d6 11.0–0 Nbd7 12.Qc2 Ne4; 7...Bd6 8.Nf3 0–0 9.Be2 e5 10.0–0 e4 11.Nd4 g6 12.f4 Re8; 7...e5 8.Nf3 d6 9.Be2 Be7 10.0–0 0–0 11.Qc2 Nbd7 12.d4 h6) 8.Nf3 Bd6 9.cd5 ed5 10.Na4 0–0 11.Be2 Nbd7 12.0–0 Ne4; 7.Na4 d6 (7...Be7 8.Nf3 d6 9.e3 Nbd7 10.Be2 0–0 11.0–0 Ne4 12.Qc2 h6 ; 7...Bd6 8.Nf3 0–0 9.g3 Be7 10.Qc2 Be4 11.d3 Bf3 12.ef3 c6; 7...h6 8.Nf3 d6 9.g3 Nbd7 10.Bg2 Be7 11.0–0 0–0 12.Qc2 Ra7; 7...d5 8.Nf3 Nbd7 9.cd5 Bd5 10.Nc3 Nc5 11.e3 Be7 12.Nd5 Qd5) 8.Nf3 Nbd7 9.Qc2 Ra7 10.Nc3 Ne5 11.Nd1 Be7 12.Ne5 de5; 7.h4 d6 (7...Be7 8.Nf3 d6 9.Na4 0–0 10.h5 h6 11.e3 Nbd7 12.Be2 Ra5; 7...Bd6 8.Nf3 0–0 9.e3 Ng4 10.Na4 f5 11.Be2 Qe7 12.Qc2 Be4; 7...d5 8.Nf3 dc4 9.e3 Bd6 10.Bc4 Nbd7 11.Qc2 0–0 12.Na4 c5; 7...g6 8.Nf3 Bg7 9.e3 0–0 10.d4 d6 11.Be2 Nbd7 12.0–0 e5) 8.Nf3 Nbd7 9.Na4 Be7 10.h5 h6 11.e3 0–0 12.Be2 Ra5) 7...d5 (7...d6 8.e3 Nbd7 9.d4 g6 10.Bd3 e5 11.e4 Bg7 12.0–0 ed4; 7...Be7 8.g3 0–0 9.Bg2 d5 10.cd5 Nd5 11.0–0 Nc3 12.Bc3 Nd7; 7...g6 8.g3 Bg7 9.Bg2 0–0 10.Na4 d6 11.Qc2 Nbd7 12.0–0 Ra7; 7...Bd6 8.g3 g5 9.h3 h5 10.Bg2 Ra7 11.Na4 Rg8 12.d3 Be7) 8.cd5 ed5 9.e3 (9.Na4 Bd6 10.g3 Nbd7 11.Bh3 0–0 12.0–0 Re8) 9...Bd6 (9...Nbd7 10.Na4 Bd6 11.Be2 0–0 12.0–0 Ne4) 10.Bd3 (10.Be2 Nbd7 11.0–0 0–0 12.Na4 Ne4) 10...0–0 (10...Nbd7 11.Na4 0–0 12.0–0 Ne4) 11.0–0 (11.Na4 Ne4 12.0–0 Nd7) 11...Nbd7 12.Na4 Ne4 13.Bc2 Re8 14.Nd4 Bh2?? (better is 14...Be5+/–) 15.Kh2+– Qh4 16.Kg1 Re5 (16...Ne5+–) 17.Nf3 Qe7 18.Ne5 Ne5 19.Bd4 Ng6 20.Nc3 Nd6 (20...Ra3 21.Ra3 Qa3 22.Qa1+–) 21.Qh5 1–0. josh – maffy, internet, 2011.

6.Nc3 d5 A) 7.cd5 ed5 (7...Bd6 8.de6 Be6 9.g3 0–0 10.Bg2 Nbd7 11.Nf3 Nc5 12.Nd4 Nb3; 7...Be7 8.de6 Be6 9.Na4 Qd6 10.Nf3 Nbd7 11.e3 0–0 12.Be2 c5) 8.Nf3 Bd6 9.g3 Nbd7 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8; B) 7.g3 dc4 (7...Bb7 8.cd5 ed5 9.Bg2 Bd6 10.Nf3 0–0 11.0–0 Nbd7 12.Na4 Re8; 7...Nbd7 8.cd5 ed5 9.Nf3 Bd6 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8; 7...Bd6 8.cd5 Bb7 9.Nf3 ed5 10.Bg2 Nbd7 11.0–0 Nc5 12.d4 Nce4; 7...Be7 8.Bg2 0–0 9.Qc2 Bb7 10.cd5 ed5 11.Nh3 c5 12.Nf4 Qd6) 8.Bg2 Ra5 9.Nf3 Bd6 10.0–0 0–0 11.Qc2 Bb7 12.Na4 Nbd7; C) 7.Qc2 Bb7 (7...Nbd7 8.cd5 Nc5 9.de6 Be6 10.Nf3 g6 11.d4 Bf5 12.Qd1 Nb3; 7...Bd6 8.cd5 ed5 9.g3 Bb7 10.Bg2 0–0 11.d4 Nbd7 12.Nf3 Qe7; 7...dc4 8.Nf3 Nbd7 9.e3 Bb7 10.Bc4 Bd6 11.0–0 0–0 12.d4 Bf3; 7...Be7 8.Nf3 0–0 9.cd5 ed5 10.Na4 Nbd7 11.e3 Ne4 12.Be2 Bf6) 8.Nf3 Bd6 9.cd5 ed5 10.e3 0–0 11.Be2 Qe8 12.0–0 Nbd7; D) 7.h4 Bd6 (7...Nbd7 8.Nf3 Bd6 9.cd5 ed5 10.g3 0–0 11.Bg2 Nc5 12.0–0 Bb7; 7...dc4 8.e3 Bd6 9.Bc4 Nbd7 10.Nf3 0–0 11.h5 h6 12.Na4 Bb7; 7...Be7 8.Nf3 0–0 9.Qc2 Nbd7 10.Na4 Bb7 11.cd5 ed5 12.e3 Bd6 ; 7...Bb7 8.cd5 ed5 9.Nf3 Bd6 10.Na4 0–0 11.e3 Nbd7 12.Be2 h6) 8.Nf3 0–0 9.g3 Nbd7 10.Bg2 Nc5 11.cd5 ed5 12.0–0 Bb7; E) 7.Nf3 Nbd7 (7...Be7 8.g3 Nbd7 9.cd5 ed5 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Bd6; 7...dc4 8.Qc2 Nbd7 9.e3 Bd6 10.Bc4 Bb7 11.d4 0–0 12.h3 g6; 7...Bb7 8.cd5 ed5 9.Na4 Bd6 10.g3 Nbd7 11.Bh3 0–0 12.0–0 Re8; 7...Bd6 8.cd5 ed5 9.g3 Nbd7 10.Bg2 Nc5 11.Nd4 Bb7 12.0–0 Qd7) 8.cd5 ed5 9.g3 Bd6 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8.

6.Nc3 d6 A) 7.Nf3 Nbd7 (7...Bb7 8.e3 Nbd7 9.d4 g6 10.Qc2 Bg7 11.Be2 0–0 12.0–0 e5; 7...Be7 8.d4 0–0 9.e3 Bb7 10.Bd3 Nbd7 11.Qc2 e5 12.0–0 g6; 7...g6 8.g3 Nbd7 9.Bg2 Bb7 10.Qc2 Bh6 11.Na4 0–0 12.0–0 Ra5) 8.d4 Bb7 9.e3 g6 10.Bd3 e5 11.e4 Bg7 12.0–0 0–0; B) 7.e3 Nbd7 (7...Bb7 8.Na4 Nbd7 9.Nf3 g6 10.Be2 Bg7 11.0–0 0–0 12.d3 Qe7; 7...h6 8.Nf3 Nbd7 9.d4 Be7 10.Bd3 Bb7 11.0–0 0–0 12.Qc2 e5; 7...Be7 8.Nf3 0–0 9.d4 Bb7 10.Bd3 Nbd7 11.0–0 e5 12.Qc2 g6; 7...h5 8.Nf3 Nbd7 9.Na4 Bb7 10.Be2 Be7 11.0–0 0–0 12.Nd4 Nc5) 8.d4 Bb7 9.Nf3 g6 10.Na4 Bg7 11.Bd3 0–0 12.0–0 e5; C) 7.Na4 Nbd7 (7...Bb7 8.Nf3 Nbd7 9.e3 g6 10.Be2 Bg7 11.0–0 0–0 12.d3 Qe7; 7...Be7 8.Nf3 Bb7 9.g3 Nbd7 10.Bg2 Ne5 11.Qc2 Ra7 12.0–0 Qa8; 7...h6 8.Nf3 Bb7 9.g3 Nbd7 10.Bg2 Ne5 11.d3 Nf3 12.Bf3 Bf3; 7...h5 8.Nf3 Nbd7 9.e3 Be7 10.Be2 Bb7 11.0–0 0–0 12.Nd4 Nc5) 8.Nf3 Bb7 9.e3 g6 10.Be2 Bg7 11.Qc2 0–0 12.0–0 e5; D) 7.d4 Bb7 (7...Nbd7 8.e4 Be7 9.Bd3 e5 10.Nf3 ed4 11.Nd4 Bb7 12.0–0 0–0; 7...g6 8.g3 Bb7 9.Nf3 Nbd7 10.Bg2 Bh6 11.0–0 0–0 12.Qc2 Qe7; 7...Be7 8.Nf3 Nbd7 9.e4 e5 10.Bd3 ed4 11.Nd4 0–0 12.0–0 Bb7; 7...h6 8.e4 Be7 9.Nf3 0–0 10.Bd3 Nbd7 11.0–0 Bb7 12.Re1 e5) 8.Nf3 g6 9.g3 Nbd7 10.Bg2 Bh6 11.0–0 0–0 12.Qc2 Qe7; E) 7.Qc2 Nbd7 (7...Bb7 8.Nf3 Nbd7 9.d4 g6 10.e4 Bg7 11.Bd3 0–0 12.0–0 e5; 7...h6 8.Nf3 Bb7 9.d4 Be7 10.e4 0–0 11.Bd3 Nbd7 12.0–0 e5; 7...Be7 8.Nf3 Nbd7 9.d4 0–0 10.e3 Bb7 11.Bd3 e5 12.0–0 g6; 7...g6 8.Nf3 Nbd7 9.g3 Bb7 10.Bg2 Bh6 11.0–0 0–0 12.Na4 Ra5) 8.Na4 Bb7 9.Nf3 Ra7 10.Nc3 Ne5 11.Qb3 Be7 12.d4 Nf3.

6.Nc3 Bd6 A) 7.Nf3 Bb7 (7...0–0 8.g3 Bb7 9.Bg2 Ng4 10.0–0 f5 11.Na4 f4 12.Qc2 Rf5; 7...Qe7 8.e4 e5 9.Bd3 Bb7 10.0–0 0–0 11.Qc2 h6 12.Rfe1 Nh5; 7...h6 8.g3 Bb7 9.Bg2 0–0 10.0–0 e5 11.Na4 Qe7 12.Qc2 Be4; 7...e5 8.g3 Bb7 9.Bg2 0–0 10.0–0 h6 11.Na4 Qe7 12.Qc2 Be4) 8.g3 g5 9.h3 Ra5 10.Na4 h5 11.Bg2 h4 12.g4 Rg8; B) 7.e3 h6 (7...Bb7 8.Nf3 0–0 9.Bd3 Qe7 10.0–0 Ng4 11.h3 Nh2 12.Nh2 Bh2; 7...0–0 8.Nf3 Bb7 9.Bd3 Qe7 10.Qc2 e5 11.Ng5 g6 12.0–0 c6; 7...Qe7 8.Nf3 Bb7 9.Bd3 e5 10.e4 0–0 11.0–0 Qe6 12.Qc2 h6; 7...Ra5 8.Nf3 0–0 9.Bd3 Bb7 10.Qc2 Qe7 11.0–0 e5 12.e4 g6) 8.Nf3 Bb7 9.Bd3 0–0 10.Qc2 Be7 11.Be2 d6 12.0–0 Nbd7; C) 7.Qc2 Qe7 (7...Bb7 8.Nf3 0–0 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...0–0 8.Nf3 Bb7 9.e3 Be7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...h6 8.Na4 0–0 9.c5 bc5 10.Nc5 c6 11.Nf3 cb5 12.e3 Qb6; 7...Ra7 8.Nf3 Bb7 9.e3 0–0 10.Be2 Qe7 11.h3 e5 12.Na4 Re8) 8.Nf3 Bb7 9.e3 0–0 10.Bd3 e5 11.Ng5 g6 12.0–0 c6; D) 7.Na4 Bb7 (7...0–0 8.Nf3 Bb7 9.g3 c6 10.Bd4 cb5 11.cb5 Bc7 12.Rc1 e5; 7...Qe7 8.Nf3 Bb7 9.g3 g5 10.h3 h5 11.Bg2 Rh6 12.d3 Qf8 ; 7...h6 8.Nf3 Bb7 9.g3 c6 10.Bg2 cb5 11.cb5 Ra5 12.0–0 0–0; 7...Ra5 8.Nf3 Bb7 9.g3 h5 10.Bg2 h4 11.Nh4 Rh4 12.Bb7 Rc4) 8.Nf3 h6 9.g3 g5 10.Bg2 Rg8 11.0–0 g4 12.Nh4 Bg2; E) 7.g3 Bb7 (7...0–0 8.Bg2 Ra7 9.Nf3 Bb7 10.Na4 h6 11.0–0 Qe7 12.d4 Ne4; 7...Ng4 8.Bg2 Ra7 9.Na4 0–0 10.Nf3 Bb7 11.0–0 f5 12.h3 Nf6; 7...Ra7 8.Bg2 0–0 9.Nf3 Bb7 10.0–0 Ne4 11.Na4 Qe7 12.Qc2 e5) 8.Nf3 g5 9.h3 h5 10.Bg2 Ra7 11.Na4 Rf8 12.Qc2 Qe7.

6.Nc3 Be7 A) 7.e3 0–0 (7...d5 8.cd5 ed5 9.Nf3 Nbd7 10.d4 0–0 11.Bd3 Bb7 12.Qc2 h6; 7...Bb7 8.Nf3 0–0 9.Qc2 d5 10.cd5 Nd5 11.Bd3 f5 12.0–0 Nd7; 7...d6 8.d4 0–0 9.Nf3 Bb7 10.Bd3 Nbd7 11.0–0 e5 12.Qc2 g6; 7...h5 8.Nf3 d6 9.Be2 Nbd7 10.0–0 Bb7 11.d4 Ne4 12.Ne4 Be4) 8.Nf3 d5 9.cd5 ed5 10.d4 Bf5 11.Nh4 Bg4 12.Be2 Be2; B) 7.g3 d5 (7...Bb7 8.Nf3 0–0 9.Bg2 d5 10.cd5 Nd5 11.0–0 Nc3 12.Bc3 Nd7; 7...0–0 8.Bg2 d5 9.cd5 Nd5 10.Nd5 ed5 11.Nf3 c5 12.bc6 Nc6; 7...Ra7 8.Bg2 d6 9.Nf3 Bb7 10.0–0 Nbd7 11.Na4 Qa8 12.Nc3 Ne5 ; 7...d6 8.Bg2 Ra5 9.Qc2 Nbd7 10.Na4 0–0 11.Nh3 d5 12.0–0 Bb7) 8.Bg2 0–0 9.cd5 ed5 10.Nf3 c5 11.bc6 Nc6 12.Rc1 Na5; C) 7.Qc2 d5 (7...0–0 8.g3 Bb7 9.Nf3 d5 10.cd5 Nd5 11.Bg2 Nd7 12.0–0 Nc5; 7...Bb7 8.Nf3 0–0 9.e3 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 Qb8; 7...d6 8.Nf3 Nbd7 9.d4 0–0 10.e3 Bb7 11.Bd3 e5 12.0–0 Re8; 7...h6 8.Nf3 Bb7 9.g3 d6 10.Bg2 Nbd7 11.0–0 0–0 12.Na4 Ra7) 8.Nf3 0–0 9.cd5 ed5 10.e3 Nbd7 11.d4 Bd6 12.Bd3 Bb7; D) 7.Na4 0–0 (7...Bb7 8.e3 0–0 9.Nf3 d6 10.Be2 Nbd7 11.0–0 Ne4 12.Qc2 h6; 7...d5 8.Nf3 0–0 9.e3 Bb7 10.Qc2 Nbd7 11.cd5 Bd5 12.Be2 Bd6; 7...d6 8.Nf3 Nbd7 9.g3 Bb7 10.Bg2 Ra7 11.d4 0–0 12.0–0 Ne4; 7...g6 8.Nf3 0–0 9.g3 Bb7 10.Bg2 d5 11.Qc2 dc4 12.Qc4 Nbd7) 8.Nf3 Bb7 9.e3 d6 10.Be2 Nbd7 11.0–0 Ne4 12.Qc2 h6; E) 7.Nf3 0–0 (7...d5 8.cd5 ed5 9.g3 Nbd7 10.Bg2 0–0 11.Na4 Bd6 12.0–0 Bb7; 7...Bb7 8.e3 0–0 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 Qb8; 7...d6 8.d4 Nbd7 9.e4 0–0 10.Bd3 e5 11.0–0 Bb7 12.Nd5 ed4; 7...h5 8.g3 Bb7 9.Bg2 g5 10.0–0 g4 11.Nh4 Qc8 12.e4 d6) 8.g3 d5 9.cd5 Nd5 10.Qc2 Bf6 11.Bg2 Nd7 12.0–0 Nc5.

6.e3 Bb7 A) 7.Nf3 d5 (7...d6 8.Nc3 g6 9.d4 Nbd7 10.Qc2 Bg7 11.Be2 0–0 12.0–0 e5; 7...g6 8.d4 d5 9.cd5 ed5 10.Nc3 Nbd7 11.Ne5 Qe7 12.f4 Bg7; 7...Be7 8.Nc3 0–0 9.Qc2 d5 10.Na4 Nbd7 11.cd5 Nd5 12.Be2 Bf6; 7...Bd6 8.Nc3 0–0 9.Be2 e5 10.0–0 e4 11.Nd4 g6 12.f4 Re8) 8.Nc3 Nbd7 9.cd5 ed5 10.Na4 Bd6 11.Be2 0–0 12.0–0 Ne4; B) 7.Qc2 d6 (7...g6 8.Nc3 d6 9.Nf3 Nbd7 10.d4 Bg7 11.Be2 0–0 12.0–0 e5; 7...d5 8.Nf3 Bd6 9.Nc3 Nbd7 10.cd5 ed5 11.Be2 0–0 12.Na4 Qe7; 7...Be4 8.d3 Bb7 9.Nc3 d5 10.cd5 ed5 11.Nf3 Bd6 12.Be2 0–0; 7...Ne4 8.Nc3 Nc5 9.Nf3 Bd6 10.Be2 0–0 11.0–0 Qf6 12.d4 Nb3) 8.Nc3 Nbd7 9.d4 g6 10.Nf3 Bg7 11.Be2 0–0 12.0–0 e5; C) 7.h3 Be7 (7...d6 8.Nc3 Nbd7 9.Na4 g6 10.Nf3 Bg7 11.Be2 0–0 12.Qc2 Ne4; 7...d5 8.Nf3 Nbd7 9.cd5 ed5 10.Nc3 Bd6 11.Na4 0–0 12.Be2 c5; 7...g6 8.Nf3 Bg7 9.Nc3 0–0 10.Be2 d6 11.d4 Nbd7 12.Qc2 e5; 7...Bd6 8.Nc3 0–0 9.Qc2 e5 10.Nf3 e4 11.Nd4 Be5 12.Na4 c5) 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 0–0 11.Be2 Ne4 12.0–0 Bf6 ; D) 7.h4 d6 (7...Be7 8.Nc3 d6 9.Na4 Nbd7 10.h5 h6 11.Nf3 0–0 12.Be2 Ra5; 7...d5 8.Nc3 Nbd7 9.Nf3 Bd6 10.cd5 ed5 11.Na4 0–0 12.Be2 h6; 7...g6 8.Nc3 d6 9.Nf3 Nbd7 10.d4 Bg7 11.Be2 0–0 12.Qc2 Qe7; 7...Bd6 8.Nc3 0–0 9.Nf3 e5 10.Be2 g6 11.Qc2 e4 12.Nd4 c5) 8.Nf3 Nbd7 9.Nc3 Be7 10.Be2 Ng4 11.Na4 0–0 12.Qc2 h6 ; E) 7.Nc3 d6 (7...d5 8.Nf3 Nbd7 9.cd5 ed5 10.Na4 Bd6 11.Be2 0–0 12.0–0 Re8; 7...Bd6 8.Nf3 0–0 9.Be2 Ne4 10.Ne4 Be4 11.d3 Bb7 12.0–0 Ra7; 7...g6 8.Nf3 d6 9.d4 Nbd7 10.Qc2 Bg7 11.Be2 0–0 12.0–0 e5; 7...Be7 8.Nf3 0–0 9.Qc2 d6 10.d4 Nbd7 11.Bd3 e5 12.0–0 g6) 8.Nf3 Nbd7 9.d4 g6 10.Be2 Bg7 11.0–0 0–0 12.Qc2 e5.

6.e3 Bc5 A) 7.Nf3 d5 (7...Bb7 8.Nc3 0–0 9.d4 Be7 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5; 7...0–0 8.d4 Be7 9.Nc3 Bb7 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5; 7...Ne4 8.Bg7 Rg8 9.Bb2 Bb7 10.Nc3 Nc3 11.Bc3 Qe7 12.Qc2 f6; 7...Be7 8.Nc3 Bb7 9.d4 0–0 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5) 8.Nc3 0–0 9.cd5 ed5 10.Na4 Nbd7 11.Be2 Bd6 12.0–0 Bb7; B) 7.d4 Bd6 (7...Be7 8.Nc3 0–0 9.Nf3 Bb7 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5; 7...Bf8 8.Nf3 Bb7 9.Nc3 Be7 10.Bd3 0–0 11.0–0 d5 12.cd5 ed5) 8.Nf3 Ne4 9.Nc3 Nc3 10.Bc3 Bb7 11.Bd3 f5 12.0–0 0–0; C) 7.Qc2 0–0 (7...d5 8.Nf3 0–0 9.Nc3 Bd6 10.Be2 dc4 11.Bc4 Nbd7 12.0–0 Bb7; 7...Bb7 8.Nc3 0–0 9.Nf3 d5 10.Na4 Nbd7 11.cd5 Bd5 12.Be2 h6; 7...Be7 8.Nc3 0–0 9.Nf3 Bb7 10.Be2 d6 11.0–0 Nbd7 12.d4 h6; 7...c6 8.Nc3 cb5 9.Nb5 Nc6 10.Nf3 Ba6 11.d4 Be7 12.Bd3 0–0) 8.Nf3 d5 9.Nc3 Nbd7 10.Na4 Bb7 11.cd5 Bd5 12.Be2 Bd6; D) 7.Bd3 d6 (7...0–0 8.Nc3 d5 9.Nf3 Nbd7 10.0–0 Bd6 11.Na4 e5 12.Be2 e4; 7...Bb7 8.Nf3 d5 9.Nc3 dc4 10.Bc4 Nbd7 11.d4 Bd6 12.0–0 0–0; 7...d5 8.Nf3 0–0 9.Qc2 Nbd7 10.cd5 ed5 11.0–0 Be7 12.Nc3 Nc5; 7...Qe7 8.Nc3 d6 9.Nf3 Bb7 10.0–0 e5 11.Be2 e4 12.Nh4 0–0) 8.Nc3 Nbd7 9.Be2 d5 10.cd5 ed5 11.Nf3 0–0 12.0–0 Bd6; E) 7.Nc3 0–0 (7...d5 8.cd5 ed5 9.Nf3 0–0 10.d4 Bd6 11.Bd3 Nbd7 12.0–0 Bb7; 7...Bb7 8.Nf3 0–0 9.d4 Be7 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5; 7...Qe7 8.Nf3 d5 9.cd5 ed5 10.Qc2 Nbd7 11.Be2 0–0 12.0–0 Bd6; 7...Bd6 8.Nf3 Bb7 9.Bd3 0–0 10.0–0 g6 11.Qc2 Be7 12.Na4 d6) 8.d4 Be7 9.Nf3 Bb7 10.Bd3 d6 11.0–0 Nbd7 12.Qc2 e5.

6.e3 d5 A) 7.cd5 ed5 (7...Nd5 8.Nc3 Bb7 9.Nf3 Nc3 10.Bc3 Nd7 11.Qc2 Nc5 12.Be2 Be4; 7...Be7 8.de6 Be6 9.Nc3 Nbd7 10.Na4 0–0 11.Nf3 Ne4 12.Qc2 Bd5; 7...Bd6 8.Bf6 Qf6 9.Nc3 0–0 10.Nf3 Nd7 11.Bc4 Bb7 12.0–0 ed5) 8.Nc3 Nbd7 9.Na4 Bd6 10.Nf3 Bb7 11.Be2 0–0 12.0–0 Qe7; B) 7.Bf6 Qf6 8.Nc3 Bb7 9.cd5 ed5 10.Nge2 Bd6 11.Nd4 0–0 12.Qg4 Rd8; C) 7.Nc3 Bd6 (7...Nbd7 8.cd5 ed5 9.Nf3 Bb7 10.Na4 Bd6 11.Be2 0–0 12.0–0 Ne4; 7...Bb7 8.Nf3 Bd6 9.cd5 ed5 10.Be2 0–0 11.Na4 Re8 12.0–0 Nbd7; 7...Be7 8.cd5 ed5 9.Na4 Nbd7 10.Be2 Ne4 11.Nf3 0–0 12.0–0 Re8; 7...dc4 8.Bc4 Bb7 9.Nf3 Nbd7 10.Na4 Bd6 11.Nd4 h5 12.f4 Bg2) 8.cd5 ed5 9.Na4 Nbd7 10.Nf3 0–0 11.Be2 Ne4 12.0–0 Re8; D) 7.Qc2 Nbd7 (7...Bd6 8.Nc3 0–0 9.Nf3 Nbd7 10.Na4 Bb7 11.cd5 ed5 12.Be2 Qe7; 7...Be7 8.Nf3 Nbd7 9.d4 Bb7 10.Nc3 0–0 11.cd5 Nd5 12.Bd3 f5; 7...Bb7 8.Nc3 Nbd7 9.Nf3 Bd6 10.Na4 Qe7 11.cd5 ed5 12.d3 Ra5) 8.Nc3 Nc5 9.Nf3 Bd6 10.cd5 ed5 11.d4 Nb3 12.Rb1 0–0; E) 7.Nf3 Nbd7 (7...Bd6 8.Nc3 0–0 9.cd5 ed5 10.Na4 Bg4 11.h3 Bf3 12.gf3 Nbd7; 7...Bb7 8.Nc3 Nbd7 9.cd5 ed5 10.Be2 Bd6 11.0–0 0–0 12.Na4 Qe7; 7...Be7 8.Nc3 0–0 9.cd5 ed5 10.Na4 Nbd7 11.Be2 Bb7 12.0–0 Ne4; 7...dc4 8.Bc4 Nbd7 9.Nc3 Bd6 10.0–0 0–0 11.Qc2 Bb7 12.d4 Bf3) 8.Nc3 Bd6 9.cd5 ed5 10.Na4 0–0 11.Be2 Bb7 12.0–0 Qe7.

6.e3 d6 A) 7.Nc3 Nbd7 (7...Bb7 8.Nf3 Nbd7 9.d4 g6 10.Bd3 Bg7 11.0–0 0–0 12.Re1 Qe7; 7...e5 8.Be2 Nbd7 9.Qc2 Nc5 10.Bf3 Ra5 11.Nge2 Be6 12.d4 e4; 7...Be7 8.Nf3 Bb7 9.d4 Nbd7 10.Bd3 0–0 11.0–0 e5 12.Qc2 g6; 7...h6 8.Nf3 Nbd7 9.d4 Bb7 10.Qc2 Be7 11.Bd3 0–0 12.0–0 e5) 8.Na4 Bb7 9.Nf3 g6 10.Nd4 Bg7 11.Nc6 Bc6 12.bc6 Ne5; B) 7.Nf3 Nbd7 (7...Bb7 8.Nc3 Nbd7 9.Be2 Be7 10.0–0 Nc5 11.Qc2 0–0 12.d4 Nb3; 7...g6 8.Nc3 Bb7 9.Be2 Nbd7 10.0–0 Bg7 11.Na4 0–0 12.d3 e5; 7...Be7 8.Nc3 0–0 9.d4 Nbd7 10.Bd3 Bb7 11.0–0 e5 12.Qc2 g6; 7...h6 8.Nc3 Nbd7 9.d4 Bb7 10.Bd3 e5 11.Qc2 Be7 12.0–0 0–0) 8.Nc3 Bb7 9.Be2 Be7 10.d4 Ne4 11.Ne4 Be4 12.0–0 0–0; C) 7.d4 Bb7 (7...g6 8.Nc3 Nbd7 9.Bd3 Bb7 10.Nf3 e5 11.Bc2 Bg7 12.0–0 0–0; 7...Nbd7 8.Nc3 g6 9.Bd3 Bb7 10.Nf3 e5 11.e4 Bg7 12.0–0 0–0; 7...Qe7 8.Be2 Ne4 9.Nc3 Nc3 10.Bc3 Nd7 11.Bf3 Ra7 12.Ne2 g6; 7...d5 8.cd5 Nd5 9.Nf3 Bb7 10.Bc4 Nd7 11.0–0 Bd6 12.e4 Nf4) 8.Nf3 g6 9.c5 dc5 10.dc5 Qd1 11.Kd1 Bf3 12.gf3 Bg7; D) 7.Qc2 Be7 (7...Nbd7 8.d4 g6 9.Nc3 Bb7 10.Nf3 Bg7 11.Be2 0–0 12.0–0 e5; 7...Bb7 8.Nc3 Nbd7 9.d4 Qe7 10.Nf3 g6 11.Bd3 e5 12.e4 ed4; 7...g6 8.Nc3 Nbd7 9.Nf3 Bb7 10.Be2 Bg7 11.0–0 0–0 12.d4 e5; 7...e5 8.Be2 Bb7 9.Nf3 g6 10.Nc3 Nbd7 11.0–0 Bg7 12.Na4 0–0) 8.Nc3 Nbd7 9.d4 e5 10.Nf3 0–0 11.Bd3 Bb7 12.0–0 g6; E) 7.Be2 Nbd7 (7...Be7 8.Nc3 Nbd7 9.Na4 0–0 10.Nf3 Bb7 11.0–0 h6 12.Nd4 Ne4; 7...Bb7 8.Nf3 Nbd7 9.Nc3 Be7 10.Na4 0–0 11.0–0 Ne4 12.Qc2 h6) 8.Nf3 Bb7 9.Nc3 Be7 10.0–0 0–0 11.Na4 Ne4 12.Qc2 h6.

6.e3 Be7 A) 7.Nf3 Bb7 (7...0–0 8.Nc3 Bb7 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...d5 8.Nc3 0–0 9.cd5 ed5 10.Na4 Ne4 11.d3 Nd6 12.Qb3 Nb5; 7...d6 8.d4 0–0 9.Nc3 Bb7 10.Bd3 Nbd7 11.0–0 e5 12.Qc2 g6; 7...h6 8.Nc3 Bb7 9.d4 0–0 10.Bd3 d5 11.cd5 ed5 12.0–0 Qd6) 8.Nc3 0–0 9.Qc2 d6 10.Be2 Nbd7 11.d4 Ra7 12.0–0 Qa8 ; B) 7.Be2 d5 (7...Bb7 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 0–0 11.Qc2 Ne4 12.0–0 h6; 7...0–0 8.Nf3 d5 9.Nc3 Nbd7 10.Na4 Bb7 11.cd5 Nd5 12.Qc2 Bf6; 7...d6 8.Nc3 Nbd7 9.Na4 0–0 10.Nf3 Ne4 11.Qc2 Bb7 12.0–0 h6; 7...h6 8.Nc3 Bb7 9.Bf3 d5 10.cd5 ed5 11.Nge2 Nbd7 12.Nf4 Nc5) 8.cd5 0–0 9.Nc3 Nd5 10.Qc2 Nd7 11.Nd5 ed5 12.Nf3 Nc5; C) 7.Bd3 d6 (7...d5 8.Nc3 Qd6 9.Nf3 dc4 10.Bc4 Nbd7 11.0–0 Bb7 12.d4 0–0; 7...0–0 8.Nc3 Bb7 9.Nf3 d6 10.0–0 Nbd7 11.Bc2 Ne5 12.Ne5 de5; 7...Bb7 8.Nf3 0–0 9.Nc3 d6 10.Na4 Nbd7 11.0–0 Ne5 12.Ne5 de5) 8.Nc3 Nbd7 9.Nf3 Nc5 10.Bc2 0–0 11.0–0 Bb7 12.Na4 Na4; D) 7.Qc2 0–0 (7...d5 8.Nc3 Nbd7 9.Na4 0–0 10.Nf3 Bb7 11.cd5 Bd5 12.Nc3 Bb7; 7...d6 8.Nc3 Bb7 9.Nf3 0–0 10.d4 Nbd7 11.Bd3 g6 12.0–0 e5; 7...Bb7 8.Nc3 0–0 9.Nf3 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 Qb8; 7...h6 8.Nc3 0–0 9.Nf3 Bb7 10.Be2 d6 11.0–0 Nbd7 12.d4 Re8) 8.Nc3 d5 9.cd5 ed5 10.Nf3 Nbd7 11.Na4 Ne4 12.Be2 Bf6 ; E) 7.Nc3 Bb7 (7...0–0 8.Nf3 d5 9.cd5 ed5 10.d4 Bb7 11.Bd3 Nbd7 12.Qc2 Re8; 7...d5 8.cd5 ed5 9.Nf3 0–0 10.Na4 Nbd7 11.Be2 Ne4 12.0–0 Bb7; 7...d6 8.Nf3 Bb7 9.d4 Nbd7 10.Bd3 0–0 11.0–0 e5 12.Qc2 g6; 7...e5 8.Be2 0–0 9.Nf3 d6 10.Qc2 Bb7 11.0–0 Nbd7 12.d4 h6) 8.Nf3 0–0 9.Qc2 d5 10.cd5 ed5 11.Be2 Nbd7 12.Na4 Bd6.

6.Nf3 Bb7 A) 7.e3 d5 (7...d6 8.Nc3 Nbd7 9.d4 g6 10.Bd3 Bg7 11.0–0 0–0 12.Re1 e5; 7...Bd6 8.Nc3 0–0 9.Bd3 Qe7 10.0–0 Ng4 11.h3 Nh2 12.Nh2 Bh2; 7...Be7 8.Nc3 0–0 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...g6 8.Nc3 Bg7 9.Be2 0–0 10.0–0 d6 11.d3 Nbd7 12.Na4 e5) 8.Nc3 Nbd7 9.Na4 Bd6 10.cd5 ed5 11.Be2 0–0 12.0–0 Ne4; B) 7.Qc2 d5 (7...d6 8.Nc3 Nbd7 9.d4 Qe7 10.Rd1 g6 11.g3 Bg7 12.Bg2 0–0; 7...Be7 8.Nc3 0–0 9.e3 d5 10.cd5 ed5 11.Be2 Nbd7 12.Na4 Bd6; 7...g6 8.Nc3 Bg7 9.g3 0–0 10.Bg2 d5 11.cd5 Nd5 12.Na4 Bb2; 7...Bd6 8.Nc3 0–0 9.g3 Be7 10.Bg2 d6 11.0–0 Nbd7 12.Na4 Ra7) 8.Nc3 Bd6 9.cd5 ed5 10.e3 0–0 11.Be2 Nbd7 12.Na4 Qe7; C) 7.g3 d5 (7...g5 8.h3 h5 9.Bg2 h4 10.g4 d6 11.Nc3 Nbd7 12.Rg1 Rg8; 7...h5 8.Bg2 Ra7 9.Nc3 Bd6 10.d3 0–0 11.0–0 Ng4 12.h3 Nf6) 8.e3 Nbd7 9.cd5 ed5 10.Bg2 Bd6 11.Nc3 Nc5 12.d4 Nce4; D) 7.h3 d6 (7...Be7 8.Nc3 0–0 9.e3 d6 10.Na4 Nbd7 11.Be2 e5 12.0–0 Ne4; 7...d5 8.cd5 ed5 9.g4 Nbd7 10.Rg1 h6 11.Nc3 Nc5 12.d4 Nce4; 7...g6 8.e3 Bg7 9.Nc3 0–0 10.d4 d6 11.Be2 Nbd7 12.Qc2 e5; 7...Bd6 8.Nc3 0–0 9.Qc2 e5 10.e3 e4 11.Nd4 Be5 12.Na4 c5) 8.Nc3 Nbd7 9.e3 Be7 10.Na4 0–0 11.Be2 Ne4 12.0–0 Bf6; E) 7.Nc3 d5 (7...d6 8.d4 Nbd7 9.Qc2 Qe7 10.Rd1 g6 11.e4 Bg7 12.Bd3 Nh5; 7...Be7 8.e3 0–0 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...Bd6 8.Na4 0–0 9.g3 Be7 10.Bg2 d5 11.Qc2 dc4 12.Qc4 Nbd7; 7...g6 8.g3 Bg7 9.Bg2 d6 10.0–0 Nbd7 11.Na4 0–0 12.Qc2 Ra7) 8.cd5 ed5 9.Na4 Bd6 10.g3 Nbd7 11.Bh3 0–0 12.0–0 Re8.

6.Nf3 d5 7.Nc3 (7.e3 Nbd7 (7...Bd6 8.Nc3 0–0 9.cd5 ed5 10.Na4 Re8 11.Be2 c5 12.Bf6 gf6; 7...Bb7 8.Nc3 Bd6 9.cd5 ed5 10.Be2 Nbd7 11.0–0 0–0 12.Na4 Ne4; 7...dc4 8.Bc4 Nbd7 9.0–0 Bd6 10.Nc3 Bb7 11.Qc2 0–0 12.h3 Qe7; 7...Be7 8.Nc3 0–0 9.cd5 ed5 10.d4 Bb7 11.Bd3 Ne4 12.0–0 Nd7) 8.Nc3 Bd6 9.cd5 ed5 10.Na4 0–0 11.Be2 Bb7 12.0–0 Ne4; 7.cd5 ed5 (7...Bd6 8.de6 Be6 9.Nd4 0–0 10.Nc3 Bd7 11.e3 c5 12.Nf3 Be6 ; 7...Be7 8.de6 Be6 9.d4 c5 10.Nbd2 Nbd7 11.e4 cd4 12.Nd4 Nc5; 7...Qd5 8.Nc3 Qh5 9.e3 Nbd7 10.Be2 Qh6 11.Nd4 Nc5 12.f4 Bd6) 8.g3 Nbd7 9.Nc3 Bd6 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8; 7.Qc2 Bd6 (7...Be7 8.Nc3 0–0 9.cd5 ed5 10.Na4 Nbd7 11.e3 Bb7 12.Be2 Bd6; 7...Nbd7 8.cd5 ed5 9.Nc3 Bb7 10.Nd4 Nc5 11.e3 Bd6 12.Be2 0–0; 7...Bb7 8.e3 Nbd7 9.Nc3 Bd6 10.Na4 0–0 11.cd5 ed5 12.Be2 Qe7; 7...dc4 8.e3 Nbd7 9.Bc4 Bb7 10.Nc3 Bd6 11.d4 0–0 12.h3 Qe7) 8.Nc3 Bb7 9.cd5 ed5 10.e3 0–0 11.d4 c5 12.bc6 Nc6; 7.g3 Bb7 (7...dc4 8.e3 Nbd7 9.Bc4 Bb7 10.0–0 Bd6 11.d4 0–0 12.Nc3 h6 ; 7...Nbd7 8.cd5 ed5 9.Nc3 Bd6 10.Bg2 Nc5 11.Nd4 Bb7 12.0–0 Qd7; 7...Bd6 8.cd5 ed5 9.Nc3 Nbd7 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8) 8.e3 Bd6 9.Nc3 0–0 10.cd5 ed5 11.Bg2 Nbd7 12.0–0 Nc5) 7...Nbd7 (7...Be7 8.cd5 ed5 9.g3 0–0 10.Bg2 Nbd7 11.Na4 Bb7 12.0–0 Bd6; 7...dc4 8.e3 Nbd7 9.Bc4 Bd6 10.0–0 Bb7 11.Qc2 0–0 12.d4 Bf3; 7...Bd6 8.cd5 ed5 9.g3 Nbd7 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8; 7...Bb7 8.cd5 ed5 9.Na4 Bd6 10.g3 Nbd7 11.Bh3 0–0 12.0–0 Re8) 8.cd5 ed5 9.g3 Bd6 10.Na4 Bb7 11.Bh3 0–0 12.0–0 Re8.

6.Nf3 d6 A) 7.Qc2 Nbd7 (7...Bb7 8.Nc3 Nbd7 9.d4 Qe7 10.e4 g6 11.Bd3 Bg7 12.0–0 0–0; 7...Be7 8.g3 Nbd7 9.Nc3 Bb7 10.Bg2 Ne5 11.d3 Nf3 12.Bf3 Bf3; 7...h5 8.g3 Bb7 9.Bg2 Nbd7 10.Nc3 Ne5 11.Na4 Ra7 12.0–0 Qa8; 7...Rg8 8.Nc3 Bb7 9.d4 Nbd7 10.h4 Be7 11.e4 g6 12.Bd3 Ng4) 8.Nc3 Bb7 9.d4 Qe7 10.e3 g6 11.Bd3 Bg7 12.0–0 0–0; B) 7.Nc3 Bb7 (7...Nbd7 8.d4 Bb7 9.e3 g6 10.Bd3 Bg7 11.0–0 0–0 12.Re1 Qe7; 7...Be7 8.g3 Nbd7 9.Bg2 Bb7 10.0–0 0–0 11.Na4 Ra7 12.d4 Ne4; 7...g6 8.g3 Bb7 9.Bg2 Nbd7 10.0–0 Bg7 11.Na4 0–0 12.Qc2 Ra7; 7...h6 8.g3 Nbd7 9.Bg2 Bb7 10.0–0 Be7 11.Na4 0–0 12.Nc3 Nc5) 8.d4 g6 9.g3 Nbd7 10.Bg2 Bh6 11.0–0 0–0 12.Qc2 Ra7; C) 7.d4 Nbd7 (7...g6 8.Nc3 Bb7 9.g3 Nbd7 10.Bg2 Bg7 11.0–0 0–0 12.Qc2 Re8; 7...Bb7 8.Nc3 g6 9.g3 Bg7 10.Bg2 Nbd7 11.0–0 0–0 12.Qc2 Re8; 7...Be7 8.e3 Nbd7 9.Nc3 Bb7 10.Bd3 0–0 11.0–0 g6 12.Qc2 e5; 7...h6 8.Nc3 Bb7 9.e3 Nbd7 10.Bd3 Be7 11.0–0 0–0 12.Qc2 Re8) 8.Nc3 Bb7 9.Qc2 g6 10.e4 Bg7 11.Bd3 e5 12.0–0 0–0; D) 7.e3 Nbd7 (7...Bb7 8.Nc3 Nbd7 9.Na4 Be7 10.Be2 0–0 11.0–0 Ne4 12.Qc2 h6; 7...e5 8.Nc3 Nbd7 9.Be2 Be7 10.0–0 0–0 11.d4 Bb7 12.Na4 Ne4; 7...g6 8.g4 h6 9.Nc3 Bb7 10.Bg2 Ng4 11.Ne4 e5 12.Nd4 Qc8; 7...Be7 8.Nc3 Bb7 9.d4 0–0 10.Bd3 Nbd7 11.0–0 e5 12.Qc2 Re8) 8.Nc3 Bb7 9.d4 g6 10.Be2 Bg7 11.Qc2 0–0 12.0–0 e5; E) 7.g3 Bb7 (7...Nbd7 8.Bg2 Bb7 9.0–0 g6 10.Nc3 Bg7 11.Na4 0–0 12.Qc2 Ra7; 7...Be7 8.Bg2 Bb7 9.0–0 Nbd7 10.Nc3 0–0 11.Na4 Ra5 12.d4 e5; 7...h5 8.Nc3 Nbd7 9.Bg2 Bb7 10.0–0 h4 11.Nh4 Bg2 12.Ng2 Ne5; 7...g6 8.Nc3 Nbd7 9.Bg2 Bb7 10.0–0 Bg7 11.Na4 0–0 12.Qc2 Ra7) 8.Bg2 Nbd7 9.0–0 g6 10.Nc3 Bh6 11.Na4 0–0 12.Qc2 Ra5.

6.Nf3 Be7 A) 7.Nc3 d5 (7...Bb7 8.g3 0–0 9.Bg2 d5 10.cd5 Nd5 11.0–0 Nc3 12.Bc3 Nd7; 7...0–0 8.Qc2 Bb7 9.e3 h6 10.Be2 d6 11.d4 Nbd7 12.0–0 Ra5; 7...d6 8.e3 h6 9.d4 Nbd7 10.Bd3 Bb7 11.0–0 0–0 12.Qc2 Re8; 7...h5 8.g3 Bb7 9.Bg2 d6 10.0–0 Nbd7 11.Qc2 Ra7 12.d4 Qa8) 8.cd5 ed5 9.e3 0–0 10.Bd3 Nbd7 11.Na4 Ne4 12.0–0 Bd6; B) 7.g3 0–0 (7...d5 8.Nc3 dc4 9.e3 0–0 10.Bc4 Bb7 11.0–0 Qd6 12.d3 Nbd7; 7...Bb7 8.Nc3 0–0 9.Bg2 d5 10.cd5 Nd5 11.Qc2 Nd7 12.Na4 Ra5; 7...d6 8.Nc3 Nbd7 9.Bg2 Bb7 10.0–0 h6 11.Na4 0–0 12.Nc3 Nc5; 7...Ra7 8.Nc3 Bb7 9.Bg2 d6 10.0–0 Nbd7 11.Na4 Qa8 12.Nc3 0–0) 8.Nc3 d5 9.Bg2 Nbd7 10.cd5 Nd5 11.Na4 Ra5 12.Qb3 Bb7; C) 7.Qc2 d5 (7...0–0 8.Nc3 Bb7 9.e3 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...Bb7 8.Nc3 d6 9.e3 0–0 10.d4 Nbd7 11.Bd3 Re8 12.0–0 e5; 7...d6 8.g3 Bb7 9.Bg2 Nbd7 10.Nc3 Ra7 11.0–0 0–0 12.d4 Qa8; 7...h6 8.Nc3 d6 9.g3 0–0 10.Bg2 Bb7 11.0–0 Nbd7 12.d4 Re8) 8.cd5 ed5 9.Nc3 0–0 10.e3 Nbd7 11.Na4 Ne4 12.Be2 Bf6; D) 7.h4 0–0 (7...d6 8.Nc3 Nbd7 9.g3 Nc5 10.Bg2 Bb7 11.d4 Nb3 12.Rb1 0–0; 7...Bb7 8.Nc3 d6 9.h5 h6 10.Na4 0–0 11.e3 Nbd7 12.Be2 Ra7; 7...d5 8.Qc2 Nbd7 9.Nc3 0–0 10.Na4 Bb7 11.cd5 Bd5 12.h5 h6; 7...h6 8.Nc3 Bb7 9.e3 0–0 10.Qc2 d6 11.d4 Nbd7 12.Bd3 Ng4) 8.Nc3 d6 9.g3 Nbd7 10.Bg2 Bb7 11.d4 e5 12.0–0 ed4; E) 7.e3 Bb7 (7...d5 8.Nc3 0–0 9.cd5 ed5 10.d4 Bb7 11.Bd3 Ne4 12.0–0 Nd7; 7...0–0 8.Nc3 Bb7 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 Ra5; 7...d6 8.Nc3 0–0 9.d4 Bb7 10.Bd3 Nbd7 11.0–0 e5 12.Qc2 Re8; 7...h6 8.Nc3 0–0 9.d4 Bb7 10.Bd3 d5 11.cd5 Nd5 12.0–0 Nc3) 8.Nc3 0–0 9.Qc2 h6 10.Be2 d6 11.0–0 Nbd7 12.d4 Ra5.

6.Nf3 g6 A) 7.g3 Bb7 (7...Bg7 8.Nc3 Bb7 9.Bg2 d6 10.0–0 Nbd7 11.Qc2 0–0 12.Na4 Ra7; 7...Bd6 8.Bg2 Bb7 9.0–0 g5 10.Nc3 g4 11.Ng5 Bg2 12.Kg2 h5; 7...d6 8.Nc3 Nbd7 9.Na4 Bb7 10.Bg2 Bg7 11.0–0 0–0 12.Qc2 Ra7; 7...Bh6 8.Nc3 Bb7 9.Bg2 d6 10.0–0 Nbd7 11.Na4 0–0 12.Qc2 Ra5) 8.Bg2 d6 9.0–0 Nbd7 10.Nc3 Bg7 11.Na4 0–0 12.Qc2 Ra7; B) 7.Qc2 Bg7 (7...Bb7 8.Nc3 d6 9.g3 Nbd7 10.Bg2 Bg7 11.0–0 0–0 12.Na4 Ra7; 7...d6 8.Nc3 Bb7 9.g3 Nbd7 10.Bg2 Bg7 11.0–0 0–0 12.Na4 Ra7; 7...Be7 8.Nc3 0–0 9.g3 Bb7 10.Bg2 d5 11.cd5 ed5 12.0–0 Nbd7; 7...Bh6 8.g4 g5 9.h4 Rg8 10.hg5 Bg5 11.Ng5 Rg5 12.Rh6 e5) 8.Nc3 0–0 9.g3 Bb7 10.Bg2 d6 11.0–0 Nbd7 12.Na4 Ra7; C) 7.e3 Bg7 (7...Bb7 8.Nc3 Bg7 9.Qc2 0–0 10.Be2 d6 11.0–0 Nbd7 12.d4 e5; 7...d6 8.Nc3 Bb7 9.Qc2 Nbd7 10.Na4 Bg7 11.Be2 0–0 12.0–0 e5; 7...Be7 8.Nc3 Bb7 9.Be2 d6 10.0–0 Nbd7 11.d4 0–0 12.Qc2 Ra7; 7...Bh6 8.Nc3 d6 9.h4 Bb7 10.Na4 Nbd7 11.Be2 Bg7 12.d4 0–0) 8.Nc3 Bb7 9.d4 0–0 10.Qc2 d6 11.Be2 Nbd7 12.0–0 e5; D) 7.e4 Bb7 (7...d6 8.Nc3 Bb7 9.Qc2 Bg7 10.d4 0–0 11.Bd3 Nbd7 12.0–0 e5; 7...Bg7 8.Bd3 Bb7 9.0–0 0–0 10.Re1 d6 11.Bc2 Nbd7 12.d4 Re8; 7...Be7 8.Nc3 Bb7 9.Be2 d6 10.Qc2 Nbd7 11.d4 0–0 12.0–0 e5) 8.e5 Nh5 9.Nc3 d6 10.ed6 Bd6 11.Ne4 0–0 12.Nd6 Qd6; E) 7.Nc3 Bg7 (7...Bb7 8.g3 Bg7 9.Bg2 d6 10.0–0 Nbd7 11.Na4 0–0 12.Qc2 Ra7; 7...d6 8.Na4 Bg7 9.g3 Bb7 10.Bg2 Nbd7 11.0–0 0–0 12.Qc2 Ra7; 7...Be7 8.e3 0–0 9.Be2 d6 10.0–0 Nbd7 11.d4 Bb7 12.Qc2 e5; 7...Qe7 8.e4 d6 9.d4 Bb7 10.e5 de5 11.de5 Nfd7 12.Be2 Nc5) 8.g3 Bb7 9.Bg2 d6 10.0–0 Nbd7 11.Na4 0–0 12.Qc2 Ra7.

6.h4 Bb7 A) 7.Nf3 Be7 (7...d6 8.Nc3 Be7 9.Na4 Nbd7 10.Qc2 0–0 11.e3 Be4 12.d3 Bb7; 7...d5 8.cd5 Bd5 9.Nc3 Bb3 10.Qb1 Nbd7 11.g3 Bc5 12.Bg2 h6; 7...h6 8.Nc3 d6 9.e3 Be7 10.Qc2 0–0 11.d4 Nbd7 12.Bd3 Ng4; 7...g6 8.Nc3 Bg7 9.Na4 d6 10.g4 0–0 11.g5 Nh5 12.Bg7 Kg7) 8.Nc3 d6 9.Na4 Nbd7 10.Qc2 0–0 11.e3 Be4 12.d3 Bb7; B) 7.e3 d6 (7...Be7 8.Nc3 d6 9.Na4 Nbd7 10.Nf3 0–0 11.Qc2 Be4 12.d3 Bb7; 7...d5 8.Nc3 Bd6 9.cd5 ed5 10.Nf3 Nbd7 11.d4 0–0 12.Bd3 h6; 7...h6 8.Nc3 Be7 9.Nf3 d6 10.Qc2 Nbd7 11.d4 0–0 12.Bd3 Ng4; 7...g6 8.Nf3 d6 9.Nc3 Nbd7 10.d4 Bg7 11.Be2 0–0 12.Qc2 Qe7) 8.Nc3 Nbd7 9.Na4 Be7 10.Nf3 0–0 11.Qc2 Be4 12.d3 Bb7; C) 7.Qc2 d5 (7...d6 8.Nc3 Nbd7 9.Nf3 Be7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7; 7...Be7 8.Nc3 d6 9.Nf3 Nbd7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7; 7...Ng4 8.Nf3 d6 9.Nc3 Nd7 10.Na4 Ndf6 11.Nc3 Ne5 12.e4 Nf3; 7...g6 8.h5 gh5 9.Nc3 d6 10.Nf3 Nbd7 11.Na4 Rg8 12.Rh3 Qb8) 8.Nf3 Nbd7 9.Nc3 dc4 10.Na4 Ra5 11.Qc4 Qa8 12.Nc3 Ba3; D) 7.d3 d6 (7...Be7 8.Nc3 d6 9.h5 Nbd7 10.Na4 h6 11.Nf3 0–0 12.e4 c5; 7...d5 8.cd5 Qd5 9.Nc3 Qh5 10.e3 Qd1 11.Rd1 Bd6 12.Nf3 0–0; 7...Bd6 8.Nf3 0–0 9.Nc3 Ng4 10.Na4 Qe7 11.g3 f5 12.Bg2 f4; 7...h6 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 Be7 11.g3 0–0 12.Bg2 c5) 8.Nc3 Nbd7 9.Na4 Be7 10.h5 h6 11.Nf3 0–0 12.e4 c6; E) 7.Nc3 d6 (7...Be7 8.Nf3 d6 9.Na4 Nbd7 10.Qc2 0–0 11.e3 Be4 12.d3 Bb7; 7...Bd6 8.Nf3 0–0 9.Qc2 e5 10.e3 g6 11.Be2 e4 12.Nd4 c5; 7...d5 8.cd5 ed5 9.Nf3 Bd6 10.e3 Nbd7 11.d4 0–0 12.Bd3 h6; 7...g6 8.Nf3 Bg7 9.e3 0–0 10.Bd3 d6 11.h5 Nh5 12.g4 Nf6) 8.Nf3 Be7 9.Qc2 Nbd7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7.

6.h4 d5 A) 7.Nc3 Bd6 (7...Nbd7 8.Nf3 Bd6 9.Na4 0–0 10.e3 dc4 11.Bc4 Bb7 12.Nc3 Ng4; 7...Be7 8.Nf3 0–0 9.e3 Nbd7 10.Na4 Bb7 11.cd5 Nd5 12.Bd3 f5; 7...dc4 8.e3 Nbd7 9.Nf3 Bd6 10.Bc4 0–0 11.0–0 Bb7 12.d4 Nd5; 7...Bb7 8.cd5 ed5 9.Nf3 Bd6 10.e3 0–0 11.Be2 Re8 12.0–0 Nbd7) 8.Na4 Nbd7 9.Nf3 0–0 10.e3 Bb7 11.cd5 Bd5 12.Be2 c5; B) 7.cd5 ed5 (7...Nd5 8.Nc3 Nc3 9.Bc3 Nd7 10.Nf3 Nc5 11.e3 Bb7 12.Ne5 Be7; 7...Qd5 8.Nc3 Qh5 9.e3 Qd1 10.Rd1 Nbd7 11.Nf3 Bb7 12.d4 Bd6; 7...Bd6 8.e4 Ne4 9.Qg4 ed5 10.Qg7 Rf8 11.Nf3 Qe7 12.Be2 f6; 7...Be7 8.de6 Be6 9.d4 0–0 10.Nf3 Nbd7 11.Qd3 Re8 12.Nc3 Nd5) 8.Nf3 Bd6 9.Nc3 Nbd7 10.d4 0–0 11.e3 Bb7 12.Bd3 h6; C) 7.e3 Nbd7 (7...Bd6 8.Nc3 0–0 9.Na4 Nbd7 10.Nf3 Qe7 11.Be2 dc4 12.Qc2 Bb7; 7...Be7 8.Nc3 0–0 9.Nf3 Nbd7 10.Na4 Ne4 11.Qc2 Bb7 12.cd5 Bd5; 7...Bb7 8.Nf3 Nbd7 9.Nc3 Bd6 10.cd5 ed5 11.Na4 0–0 12.Be2 Re8; 7...c5 8.bc6 Nc6 9.cd5 Qd5 10.Bf6 gf6 11.Nc3 Qf5 12.Nf3 Bb7) 8.Nc3 Bd6 9.Na4 0–0 10.Nf3 Bb7 11.cd5 Bd5 12.Be2 c5; D) 7.Qc2 Nbd7 (7...Bb7 8.Nf3 Nbd7 9.e3 Bd6 10.Nc3 0–0 11.Na4 c5 12.Bd3 dc4; 7...Bd6 8.Nf3 0–0 9.Nc3 Bb7 10.cd5 ed5 11.e3 Nbd7 12.Na4 Qe7; 7...d4 8.Nf3 c5 9.e3 Bb7 10.Be2 Nbd7 11.ed4 cd4 12.Nd4 Bg2; 7...Be7 8.Nf3 Nbd7 9.Nc3 0–0 10.Na4 h6 11.e3 Ne4 12.Bd3 Bb7) 8.cd5 Nc5 9.Nc3 Nd5 10.Nf3 Bb7 11.e3 Nc3 12.Qc3 Ne4; E) 7.Nf3 Nbd7 (7...Bd6 8.g4 Ng4 9.Bh3 h5 10.cd5 0–0 11.Nc3 ed5 12.Qc2 Be7; 7...Be7 8.Nc3 0–0 9.cd5 ed5 10.Nd4 Bb7 11.e3 Nbd7 12.Na4 Ne5; 7...Bb7 8.Nc3 Bd6 9.e3 0–0 10.cd5 ed5 11.Na4 Nbd7 12.Be2 Qe7; 7...dc4 8.e3 Nbd7 9.Bc4 Bd6 10.Nc3 0–0 11.Na4 Bb7 12.Nc3 Ng4) 8.Nc3 Bd6 9.Na4 0–0 10.e3 Ne4 11.Qc2 Bb7 12.Be2 Qe7.

6.h4 d6 A) 7.Nc3 Nbd7 (7...Bb7 8.Nf3 Nbd7 9.Na4 Be7 10.h5 h6 11.e3 0–0 12.Be2 Ra7; 7...Be7 8.Nf3 Bb7 9.h5 h6 10.Na4 0–0 11.e3 Nbd7 12.Be2 Ra7; 7...h6 8.Nf3 Nbd7 9.d4 Be7 10.e3 Bb7 11.Bd3 0–0 12.Qc2 Ng4) 8.Nf3 Be7 9.e3 Bb7 10.Na4 0–0 11.Qc2 h6 12.Be2 Ne4; B) 7.d4 Be7 (7...Nbd7 8.Nf3 Be7 9.g3 Bb7 10.Bg2 0–0 11.Nc3 Ra5 12.0–0 Qa8; 7...Bb7 8.Nc3 Be7 9.Nf3 0–0 10.g3 Nbd7 11.Bg2 Ra5 12.0–0 Qa8; 7...g6 8.Nc3 Bb7 9.Nf3 Nbd7 10.e3 Bg7 11.Be2 0–0 12.0–0 e5; 7...h6 8.Nc3 Nbd7 9.Nf3 Be7 10.e3 0–0 11.Bd3 Bb7 12.Qc2 Ng4) 8.Nf3 Nbd7 9.Nc3 Bb7 10.g3 0–0 11.Bg2 e5 12.0–0 ed4 ; C) 7.Qc2 Be7 (7...g6 8.Nc3 Bg7 9.Nf3 Bb7 10.e3 Nbd7 11.Na4 0–0 12.Be2 Qe7; 7...Nbd7 8.Nf3 Bb7 9.Nc3 Be7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7; 7...Bb7 8.Nc3 Nbd7 9.Nf3 Be7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7; 7...h6 8.Nc3 Nbd7 9.Nf3 Bb7 10.d4 Be7 11.e3 0–0 12.Bd3 Ng4) 8.Nc3 Bb7 9.Nf3 Nbd7 10.Na4 0–0 11.e3 h6 12.Be2 Ne4 ; D) 7.h5 Nbd7 (7...Bb7 8.Nc3 Nbd7 9.Nf3 Nc5 10.Qc2 Be7 11.h6 g6 12.d4 Nce4; 7...Be7 8.Nc3 h6 9.Nf3 Nbd7 10.Na4 0–0 11.e3 Bb7 12.Be2 Ra7; 7...h6 8.Nc3 Nbd7 9.Nf3 Be7 10.e3 0–0 11.Na4 Bb7 12.Be2 Ra7; 7...e5 8.Nf3 Bg4 9.h6 gh6 10.Nc3 Nbd7 11.Na4 Bg7 12.Qc2 0–0) 8.d4 Bb7 9.Nc3 h6 10.Nf3 Be7 11.e3 0–0 12.Qc2 Ng4; E) 7.Nf3 Be7 (7...Nbd7 8.Nc3 Be7 9.e3 Bb7 10.Na4 0–0 11.Qc2 h6 12.Nc3 Ne5; 7...Bb7 8.Nc3 Nbd7 9.Na4 Be7 10.e3 0–0 11.Qc2 h6 12.Nc3 Ne5; 7...h6 8.Nc3 Nbd7 9.e3 Be7 10.d4 0–0 11.Bd3 Bb7 12.Qc2 Ra7; 7...Ng4 8.Qc2 Bb7 9.Nc3 Nd7 10.Na4 Ndf6 11.Nc3 Be7 12.e3 Ne5) 8.Nc3 Nbd7 9.Na4 0–0 10.e3 Bb7 11.Qc2 h6 12.Nc3 Ne5.

6.h4 Bd6 A) 7.Nf3 0–0 (7...Bb7 8.Nc3 0–0 9.Na4 Qe7 10.e3 Ng4 11.Be2 f5 12.Qc2 Ra7; 7...Qe7 8.e3 0–0 9.Nc3 Bb7 10.Na4 Ng4 11.Be2 f5 12.Qc2 Ra7; 7...Ra7 8.Nc3 Bb7 9.Na4 0–0 10.Qc2 Qe7 11.e3 Be4 12.d3 Ba8; 7...Ra5 8.Nc3 Bb7 9.e3 0–0 10.Na4 Qe7 11.Qc2 Be4 12.d3 Bb7) 8.Qc2 Bb7 9.Nc3 e5 10.e3 e4 11.Nd4 Be5 12.Na4 c5; B) 7.e3 Bb7 (7...0–0 8.Nc3 Bb7 9.Nf3 e5 10.Be2 g6 11.0–0 e4 12.Nd4 Nh5; 7...h6 8.Nf3 0–0 9.Nc3 Be7 10.Na4 d6 11.Qc2 Bb7 12.Be2 Nbd7; 7...e5 8.Nc3 e4 9.Nh3 Bb7 10.Na4 0–0 11.Be2 Qe7 12.0–0 Be5; 7...Ra7 8.Nc3 Bb7 9.Nf3 0–0 10.Qc2 Be7 11.Rh3 d5 12.cd5 ed5) 8.Nc3 0–0 9.Na4 Be7 10.Nf3 d6 11.Be2 Nbd7 12.0–0 Ne4; C) 7.Qc2 Bb7 (7...e5 8.Nf3 0–0 9.Nc3 Bb7 10.e3 e4 11.Nd4 Be5 12.Na4 c5; 7...h6 8.Nc3 Bb7 9.Nf3 Be7 10.Rh3 0–0 11.e3 d6 12.d4 Nbd7; 7...Qe7 8.Nf3 Bb7 9.Nc3 0–0 10.e3 Ng4 11.Na4 f5 12.Be2 Ra7; 7...g6 8.Nc3 Bb7 9.Nf3 0–0 10.Na4 Qe7 11.e3 Be4 12.d3 Bb7) 8.Nc3 Ng4 9.Na4 Be5 10.Be5 Ne5 11.d4 Ng4 12.Nf3 Qf6; D) 7.h5 Bb7 (7...h6 8.Nc3 Bb7 9.Nf3 Ng4 10.Na4 e5 11.e3 0–0 12.Be2 e4; 7...Qe7 8.Nf3 Bb7 9.e3 Ra7 10.Nc3 h6 11.Bd3 0–0 12.Na4 e5; 7...Ra5 8.Nc3 Bb7 9.Na4 h6 10.Nf3 0–0 11.Qc2 Qe7 12.e3 e5; 7...Ra7 8.Nc3 Bb7 9.e3 h6 10.Nf3 Qe7 11.Bd3 e5 12.Nh4 0–0) 8.Nc3 h6 9.Nf3 0–0 10.Na4 Qe7 11.e3 e5 12.Be2 Ra7; E) 7.Nc3 Bb7 (7...0–0 8.Na4 Bb7 9.Nf3 Re8 10.Qc2 c5 11.Nc3 Bc7 12.a4 d5; 7...Qe7 8.Nf3 Bb7 9.e3 0–0 10.Qc2 Ng4 11.Na4 f5 12.Be2 Ra7; 7...h6 8.Nf3 Bb7 9.e3 0–0 10.Qc2 Qe7 11.Be2 Ra7 12.Na4 e5; 7...e5 8.Nf3 Bb7 9.e3 0–0 10.Be2 g6 11.Qc2 e4 12.Nd4 c5) 8.Nf3 0–0 9.Na4 Qe7 10.e3 Ng4 11.Qc2 f5 12.Be2 Ra7.

6.h4 Be7 A) 7.Nf3 d6 (7...Bb7 8.Qc2 d6 9.Nc3 Nbd7 10.Na4 0–0 11.e3 Be4 12.d3 Bb7; 7...0–0 8.Qc2 d6 9.Nc3 Nbd7 10.Na4 Bb7 11.e3 h6 12.Be2 Ne4; 7...d5 8.Qc2 0–0 9.Nc3 Nbd7 10.Na4 Bb7 11.cd5 ed5 12.e3 Ne4; 7...h6 8.Nc3 Bb7 9.Na4 d6 10.g3 Nbd7 11.Bg2 0–0 12.0–0 Ra5) 8.Nc3 Nbd7 9.Na4 Bb7 10.e3 0–0 11.Be2 Ne4 12.Qc2 h6 ; B) 7.e3 0–0 (7...d5 8.Nf3 Nbd7 9.Nc3 0–0 10.Na4 Ne4 11.Be2 Bb7 12.cd5 Bd5; 7...d6 8.Nf3 Nbd7 9.Nc3 0–0 10.Na4 Bb7 11.Qc2 Be4 12.d3 Bb7; 7...Bb7 8.Nc3 0–0 9.Nf3 d6 10.Na4 Nbd7 11.Qc2 h6 12.h5 Ra5; 7...Ne4 8.Nc3 Nc5 9.Qg4 Bb7 10.Nf3 d6 11.Qg7 Bf6 12.Qh6 Nbd7) 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 Bb7 11.Be2 Ne4 12.Qc2 h6; C) 7.h5 d6 (7...h6 8.Nf3 d6 9.Nc3 Bb7 10.Na4 Nbd7 11.e3 0–0 12.Be2 Ra5; 7...Bb7 8.h6 g5 9.Nc3 d6 10.Nf3 g4 11.Nd4 Nbd7 12.Na4 Rg8; 7...d5 8.h6 gh6 9.Nf3 dc4 10.Nc3 Nbd7 11.Rh4 Nc5 12.Rc4 Bb7) 8.Nf3 Nbd7 9.h6 gh6 10.Nc3 Ng4 11.Nd5 Ndf6 12.Ne7 Ke7; D) 7.Qc2 Bb7 (7...d6 8.Nc3 0–0 9.Nf3 Nbd7 10.g3 Bb7 11.Bg2 Ne5 12.Na4 Ra5; 7...0–0 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 Bb7 11.e3 h6 12.Be2 Ne4; 7...d5 8.Nf3 0–0 9.cd5 Qd5 10.Nc3 Qb3 11.Qb3 ab3 12.e3 Nbd7; 7...h6 8.Nc3 d6 9.Nf3 Nbd7 10.d4 Bb7 11.e3 Ra7 12.Bd3 0–0) 8.Nc3 d6 9.Nf3 Nbd7 10.Na4 0–0 11.e3 h6 12.Be2 Ne4; E) 7.Nc3 d6 (7...Bb7 8.e3 d6 9.Nf3 Nbd7 10.Na4 0–0 11.Be2 Ne4 12.Qc2 h6; 7...0–0 8.Nf3 d6 9.Na4 Nbd7 10.e3 Ne4 11.Nc3 Ndc5 12.Ne4 Ne4; 7...d5 8.cd5 ed5 9.Nf3 0–0 10.Nd4 Bb7 11.Na4 Nbd7 12.e3 Ne5; 7...h6 8.Nf3 0–0 9.Qc2 Bb7 10.e3 d6 11.d4 Nbd7 12.Bd3 Ra7) 8.e3 Nbd7 9.Na4 0–0 10.Nf3 Bb7 11.Qc2 Be4 12.d3 Bb7.

3.Bb2 b6

4.a4 Bb7 (--> 1.b4 a5 2.b5 b6 3.a4 Bb7 4.Bb2 Nf6).

4.c4 e6 5.Nf3 Bb7 6.d4 (6.Nc3!?+=) 6...Bb4= 7.Nbd2 (7.Nc3 Ne4 8.Qd3 Qf6+=) 7...d6 (7...a4 8.a3 Ba5 9.e3=) 8.a3= Bd2 9.Nd2 Nbd7 10.Qc2 Qe7 11.e4 e5 12.d5 Nc5 13.Be2 a4 14.0–0 g5 (14...0–0 15.Rae1=) 15.Rae1+= h5 16.Bd1 (16.Bc3 Kf8+=) 16...h4 17.Bc3 (17.h3 0–0–0=) 17...Bc8 18.Bb4 g4 (18...h3 19.g3=) 19.Bc5 bc5 (19...dc5 20.f4 Nh5 21.Qc3=) 20.Nb1+= Nh5 21.g3 Qg5 22.Qd2 Qg6 (22...Qd2 23.Nd2 Ke7 24.Nb1= (worse is 24.gh4 Nf4–/+)) 23.Nc3+= f5 24.ef5 Bf5 25.Re3 (worse is 25.Na4 Bd3+=; worse is 25.gh4 Kf7 26.Qe3 Nf4–/+) 25...Qh6 26.Qe2 (worse is 26.Na4 hg3 27.fg3 Ng3=; worse is 26.gh4 Nf4 27.f3 gf3 28.Rff3 0–0–0–/+) 26...0–0–0 (26...0–0 27.Bc2 hg3 28.hg3 Bc2 29.Qc2=) 27.Ba4 Nf4?? (better is 27...Nf6+/–) 28.gf4+– ef4 29.Re7 g3 (29...f3 30.Qe3+–) 30.b6! Qg6 (30...cb6 31.Ra7 Combination) 31.Rc7 Kb8 32.Qe7 Rd7 33.Rd7 Bd7 34.Qd7 Rh7 35.Qd8 Kb7 36.Re1 Qg7 37.Qc7! (37.Qc7 Qc7 38.bc7 Rc7 39.Ne4+–) 1–0. Krivanek,Vladimir (2180) – Jelinek,Michal (1920), Praha CZE, Zlata Praha Open, 2014.

4.d4 e6 5.Nd2 d5 6.g3 c6 7.bc6 Nc6 8.Bg2 Be7 9.Ngf3 0–0 10.0–0 Bb7 11.a4 Rc8 12.Ba3 Nb4 13.Rc1 (better is 13.h3!?–/+) 13...Na2–+ 14.Be7 Qe7 15.Ra1 Nc3 16.Qe1 Ba6 0–1. bobby fissure – PeterRs, ChessWorld.net, 2012.

4.e3 c5 5.Nf3 Bb7 6.d4 d6 7.c4 (7.dc5 bc5 8.c4 Nbd7+=) 7...cd4= 8.ed4 e6 9.Be2 d5 10.0–0 Nbd7 11.Nc3 Bd6 12.a4 0–0 13.Re1 Rc8 14.cd5 Nd5 15.Ne4 Bb4 16.Rf1 Nf4 17.Rc1?? (better is 17.Ng3–/+) 17...Be4–+ 18.Nd2 (18.Kh1–+) 18…Qg5 (18...Qg5 19.Bf3 Bf3 20.Qf3 Bd2–+) 0–1. craig4000 – PeterRs, ChessWorld.net, 2012.

4.e3 Nd5 5.Qf3 e6?? (better is 5...c6+=) 6.c4+– Nb4?? (6...Bb7+–) 7.Qa8 Ba6 (7...Nc2 8.Kd1 Na1 9.Qb8+–) 8.Kd1 Bb5 9.cb5 Bc5 (9...Nd5 10.Nf3+–) 10.e4 0–0 11.a3 Bf2 12.Nh3 Bc5 13.ab4 Bb4 14.Nc3 Qh4 15.Qb7 c6 (15...Qd8 16.Be2+–) 16.Qb6 Bc3 17.Bc3 Qe4 18.Ra5 cb5 19.Qb5 Nc6 (19...f6 20.Ra4 Qg6 21.Bd3+–) 20.Ra4 Qg6 21.Nf4 Qg4 22.Be2 Qh4 23.Ne6! Qa4 (23...de6 24.Qc4 Double attack (24.Rh4 Discovered attack; 24.Qc6 Deflection; 24.Qc4 Decoy; 24.Qc6 Overloading); 23...fe6 24.Rh4 Discovered attack) 24.Qa4 de6 25.Qc6 Re8 26.Qe8 1–0. Janek – Zack, internet, 2016.

4.Nf3 e6 5.a4 (5.e3 Bb7=) 5...d5 6.e3 Bb7 7.Be2 Nbd7 (7...Bd6 8.0–0=) 8.0–0 c5 (8...Bb4 9.Ba3=) 9.c4 (9.bc6 Bc6 10.Nd4 Bb7+=) 9...Qc7 (9...Bd6 10.cd5 Bd5 11.Nc3=) 10.Na3 (10.cd5 Bd5 11.Nc3 Bb7=) 10...Bd6 11.h3 (11.cd5 e5 12.Nh4 e4=) 11...0–0–0 (11...0–0 12.Rc1=) 12.d4+= Ne4 (12...Ne4 13.cd5 Bd5+=; 12...e5 13.Rc1+=) (30 moves). Davis,E – Phelps,LJ, Dayton, 1977.

4.Bf6 ef6 5.e3 =.

4.Bf6 gf6 5.Nf3 Bb7 6.e3 (6.Nc3 f5=) 6...f5 (6...Rg8 7.Nc3=) 7.Bd3 (7.d4 e6+=) 7...Bg7 (7...e6 8.Be2=) 8.Nc3 (8.c3 e6=) 8...e6 9.0–0 (9.Be2 Bc3 10.dc3 Rg8=) 9...d6 (9...Rg8 10.Be2=) 10.Be2 (10.Qe2 Rg8=) 10...Nd7 (10...Bc3 11.dc3 Rg8 12.Qd2=) 11.d4 0–0 (11...Rg8 12.Nb1=) 12.a4 (12.Rb1 Re8+=) 12...Kh8 (12...Qf6 13.Qd2=) 13.Re1 (13.Nd2 f4 14.Bf3 d5=) 13...Rg8 14.Qd3 Nf6 (14...Qf6 15.Rab1=) 15.Nd2 Bh6 (15...e5 16.Nb3=) 16.Bf3+= d5 17.Ne2 Ne4 18.g3 (18.c4 dc4 19.Qc2 c5+=) 18...c6 (18...Bf8 19.Rec1=) 19.bc6 (19.c4 dc4 20.Nc4 cb5+=) 19...Ba6+= 20.c4 Nd2 (20...Rc8 21.Be4 (21.Ne4 fe4 22.Be4 de4 23.Qe4 Bc4–+) 21...fe4 22.Qb3 Rc6 23.cd5 Qd5 24.Rac1 Qb3 25.Nb3 Rc1 26.Nec1+=) 21.Qd2= Bc4 22.Rac1 Rc8 23.Rc4 dc4 24.Qc3 Bf8 (24...Qf6 25.Bg2+=) 25.d5 (25.Qc4 Rg7+=) 25...Bg7 (25...Rg7 26.Qc4 e5 27.Bg2+=) 26.Qc4+= e5 (26...Qd6 27.Rb1+=) 27.Bg2+/– Bf8 28.Bh3 Qf6 29.e4 Bc5 30.Bf5+– Rc7 31.Nc3 h5? 32.Nb5 Rcc8 33.Qe2 Qg5 34.Bc8 Rc8 35.c7 h4 36.Kf1 hg3 37.fg3 (37.fg3 Kg8 38.Rd1+–) 1–0. PostModernist – inmortal, ICS, 2000.

4.c4 Bb7

5.Nc3 c6 6.a4 e6 7.e4 c5 8.Bd3= Bd6 9.Nf3 e5 10.Qc2 Nh5 11.Ne2 Bc7 12.Ne5 Qg5= 13.f4 Qg2 14.0–0–0 Qh3 15.Rdf1 d6 16.Nf3+= Nd7 17.Rhg1 0–0–0? 18.Ng5+– Qh2 19.Rh1 Qg2 20.Rfg1 Qf2 21.Rh5 Nf6 22.Bf6 gf6 23.Nf7 Rhg8 24.Rgh1 Rde8 25.Rh7 f5 26.Ng5 Rg5? 27.fg5 fe4 28.Rh8 ed3 29.Re8 Kd7 30.Rh7 Ke8 31.Qd3 (31...Kd8 32.Rh8 Ke7 33.Qg6 Qf1 34.Kc2+–) 1–0. Borrmann,Fritz – Foisor,V, corr, 1975.

5.Nc3 e6 6.Nf3 d5 7.e3 Nbd7 8.d4 dc4 9.Bc4+= Bb4 10.0–0 0–0 11.Ne1 c6 12.a4 cb5 13.Nb5 Ne4 14.Nc2 Nd2–/+ 15.Nb4 Nc4 16.Nd3 Nb2 17.Nb2=+ Nf6 18.f3 Qe7 19.Qb3 Rac8 20.Rac1 Nd5 21.Nc4 Nb4 22.Nb6+/– Rc1 23.Rc1 Qg5 24.Rf1 Bf3?? 25.Rf3+– 1–0. Borrmann,Fritz – Scott, corr, 1978.

5.e3 d5 6.Bf6 ef6 7.cd5 Bd5 8.Nc3 Bb7 9.Nf3 Bb4 10.Be2 0–0 11.0–0 Nd7 12.a3 Bd6 13.Nh4 Ne5 14.d4+/– Ng6 15.Ng6 fg6 16.Bc4 Kh8+= 17.Bd5 Bd5= 18.Nd5 Bh2 19.Kh2 Qd5 20.Qd3 Rfe8 21.f4 Re4 22.Rac1 Rd4?? 23.ed4+– Qf7 24.d5 (24...Rd8 25.Rcd1+–) 1–0. Trokenheim,Marek – Wartig,Wolfgang, corr SOK–89–41, 1990.

5.e3 e6 6.Nf3 (--> 4.c4 Bb7 5.Nf3 e6 6.e3).

5.e3 g6 6.Nf3 Bg7 7.Be2 0–0 8.0–0 d5 9.Nc3 Nbd7 (9...dc4 10.Bc4 c5 11.bc6 Nc6 12.d4+=) 10.Qc2 (10.Nd5 Nd5 11.Bg7 Kg7 12.cd5 Bd5+=) 10...c6 (10...dc4 11.Bc4 Bf3 12.gf3=) 11.h3 (11.bc6!? Bc6 12.cd5 Nd5 13.Nd5 Bd5 14.Bg7 Kg7 15.d4+=) 11...dc4= 12.bc6 Bc6 13.Bc4 (13.Nd4 Bb7 14.Bc4 Rc8=) 13...Rc8+= 14.Be2 b5 15.Qb1 b4 16.Nd1 Nc5 17.Bd4 Be4 (better is 17...Ne6 18.Bf6 Bf6–/+) 18.Qb2?? (better is 18.d3!? Bd5 19.Nb2=) 18...Nd3 (better is 18...Na4 19.Qb3 Bc2–+) 19.Qb3 (19.Bd3 Bd3 20.Re1 Be4–/+) 19...Nc1–+ 20.Rc1 Rc1 21.d3 Bd5 22.Qb2 Rc6 23.Ne5 Rc8 24.e4 Bb7 25.a3 ba3–+ 26.Qb7 Qd4 27.Nc6 Qc5?? 28.Ne7= Kh8 29.Nc8 Qc8 30.Qb3+= Qc5 31.Nc3 Nd7 32.Nd5 Rb8 33.Qa4 Nb6 34.Nb6 Rb6 35.d4 Bd4–+ 36.Rd1 Bf2 37.Kh1 h5 38.Rd8 Kg7 39.Qe8+= Rb1 40.Kh2?? Qc7 41.e5 Kh6 42.Qh8 Kg5 43.Qf6 Kh6 44.Rh8# 1–0. orangutanb4 (1915) – mariano2033 (2125), internet, 2011.

5.Nf3 e6

6.e3 d5 7.Nc3 Nbd7 8.Be2 Bd6 9.0–0 0–0 10.Nd4 Ne4 11.Ne4 de4 12.Bg4 Ne5=+ 13.Qe2 Qh4–/+ 14.h3 f5 15.f4 ef3?? 16.Bf3 Bf3–/+ 17.Nf3 Qc4 18.Rae1 Nd3 19.Bc3 Rad8 20.Nd4–/+ Bc5 21.Rf4?? e5–+ 22.Nf5 ef4 23.Qg4 Qc3! 24.dc3 Rf5 25.Re2?? Rdf8–+ 26.Kh2 Ne5 27.Qh4 f3 28.Re1 fg2 29.Kg2 Rf2! 30.Kh1 Rh2! 31.Kh2 Nf3 32.Kg3 Bd6 33.Kg4 Nh2 34.Kh5 Rf5 (35.Qg5 g6 36.Kh4 Nf3 37.Kg4 h5 38.Qh5 Nh2 39.Kh4 Rh5#) 0–1. Axelsson,JH – Oskarsson,Torsten, Helsingborg S. Allers, 1960.

6.e3 d6 7.d4 Nbd7 8.Nc3 Be7 9.Bd3 Nf8 10.e4 N8d7 11.0–0 Nf8 12.e5 N6d7 13.Re1 c6? 14.Be4 Nb8 15.a4 Nfd7 16.Qd3 Nf8? 17.d5+– ed5 18.cd5 c5 19.e6! f6 20.Re3 Qc7 21.Nd2 Kd8 22.Rh3 h6 23.Re1 Kc8 24.Ree3 Qd8 25.Reg3 g5 26.Nd1 h5 27.Rg5 Qe8?? 28.Ne3 fg5 29.Bh8 Ne6 30.de6 Qh8 31.Bb7 Kb7 32.Qe4 Ka7 33.g4 h4 34.Nd5 Qd8 35.Nc4 Nd7 36.ed7 Qd7 37.Qe7 (37...Qe7 38.Ne7+–) 1–0. Nielsen,Joergen Axel – Ebmeyer,R, corr EU–ch GT42, 1969.

6.e3 d6 7.Be2 Nbd7 8.0–0 Be7 9.d4 Bf3 10.Bf3+/– Rc8 11.Nd2 d5 12.Rc1 h5 13.Qb3 dc4 14.Nc4+– g5 15.Bc6 0–0 16.Rfd1 Bd6 17.Ne5 Qe7 18.f4 gf4 19.ef4 Kh8 20.Kh1 Rg8 21.d5 Be5 22.fe5 Ng4 23.Qf3?? Qh4+= 24.h3 Nf2 25.Kg1?? Nh3–+ 26.Kf1 Rg3 27.Qe2 Nf4 28.Qf2 Rcg8 29.d6=+ Qh1 30.Qg1 Qg1 31.Kg1 Ne2 32.Kf2? Nc1–/+ 33.Rc1 Nc5 34.Rd1 Nd3–+ 35.Ke2?? Nb2 36.Rd4 cd6 37.ed6 Rd3! 38.Rd3 Nd3 39.Kd3 Rd8 40.d7 Kg7 41.Ke4 Kf6 42.Kf4 Ke7 43.Kg5 f6 44.Kh5 Rd7 45.Bd7 Kd7 46.Kg6 Ke7 47.a4? f5 48.g3 Kd6 49.Kf6 Kd5 50.Kg5 Ke4 51.Kf6 e5 52.Ke6 f4 53.gf4 ef4 54.Kd6 f3 55.Kc6 f2 56.Kb6 f1Q 57.Ka5 Qf8 58.b6 Qa8 59.Kb5 Kd5 60.a5 Qb7 61.Kb4 Qa6 62.Ka4 Kc4 (63.Ka3 Qb5 64.Ka2 Kc3 65.a6 Qb2#) 0–1. Cedergaard,Allan – Hjortstam,Kurt, Alingsas Sweden, 1985.

6.e3 Bd6 7.Be2 =.

6.e3 Be7 7.Be2 0–0 8.0–0 d5 (8...Ne4 9.Nc3=) 9.d3 (9.Bf6 Bf6 10.d4 dc4=) 9...c5 10.Nbd2 Nbd7 11.Re1 (11.Qa4 Bd6=) 11...Qc7 12.Rc1 Rfd8 13.a4 dc4 14.dc4 Bd6 15.Bf1 e5 16.e4=+ Nf8 17.g3 Ne6=+ 18.Bd3 Nd4–/+ 19.Nd4 cd4 20.Qb3 Bb4 21.Rc2 Qd7 22.Ba3 Qe6 23.Bb4= ab4 24.Qb4 Nd7 25.Nb3 h5 26.a5+/– ba5 27.Na5 Qb6 28.Nb3 Rab8 29.c5+– Qe6 30.Na5 Ba8 31.c6 (31...Nb6 32.c7+–) 1–0. Tavares,Raimundo A M – Navarro,Marcos S, corr TBI CXEB, 1995.

6.e3 Be7 7.Be2 c5 8.0–0 0–0 9.Nc3 Qc7 10.Qc2 d5 11.d3 Nbd7 12.h3 Rad8 13.Rfd1 Ne8 14.Qb3 d4=+ 15.Ne4 e5 16.Rac1 f5 17.Ned2 Ndf6 18.ed4 ed4 19.Re1 h6 20.Bf1 Nh5 21.Qd1 Nef6 22.g3 Bd6=+ 23.Bg2 Ng4 24.hg4+/– fg4 25.Rf1?? gf3–/+ 26.Nf3 Bg3 27.fg3= Qg3 28.Rc2? Rde8–+ (29.Nh4 Rf4–+) 0–1. Mueller,Klaus Detlef – Schoppmeyer,Herbert, corr ICCF EU–ch GT189, 1981.

4.e3 Bb7

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

5.f4 e6 6.Nf3 =.

5.f4 g6 6.Nf3 Bg7 7.c4 0–0 8.Nc3 d6 9.Be2 Nbd7 10.0–0+= Ne4 11.Qc2 Ndc5 12.d3 Nc3 13.Bc3 e5 14.fe5+/– de5 15.e4 Qe7 16.Rf2 Rad8= 17.Raf1 Rd6 18.Bd2 Rfd8 19.Ne1 f6 20.Be3+= R6d7 21.Qc1 Rf8 22.Qa3 Ne6 23.Qe7+/– Re7 24.Bg4 Rd8= 25.Rc2 Nd4 26.Bd4 Rd4=+ 27.Be2 Rd8 28.c5 Kf7 29.Nf3 Bh6 30.cb6 Be3–/+ 31.Kh1 cb6 32.g4 Bc8 33.Rc6 (33...Bd7 34.Rd6–/+; 33.g5 Bh3 34.Ne5 Re5 35.Rf6 Kg8=). Valles,Angel – Ruiz,Luis, Oviedo rapid, 1991.

4.Nf3 Bb7

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

3.Bb2 c5

4.a4 d5 A) 5.e3 A1) 5...Bf5 6.Be2 (6.Nf3 e6 7.Be2 Bd6 8.Nh4 Bg6 9.Nc3 Nbd7 10.f4 Qc7 11.Bf3=; 6.Bf6 ef6 7.Be2 Nd7 8.Nf3 Bd6 9.0–0 0–0 10.Nc3 Nb6 11.Bd3+=) 6...e6 7.Nf3 Bd6 8.Nh4 Bg6 9.f4 Ne4 10.g3 Nf6 11.0–0=; A2) 5...Nbd7 6.Nf3 (6.f4 e6 7.Nf3 Be7 8.Be2 0–0 9.0–0 Qb6 10.Qe1 Ne4 11.d3=) 6...e6 7.Be2 Bd6 8.d4 cd4 9.ed4 Ne4 10.0–0 0–0 11.Ba3=; A3) 5...e6 6.d4 (6.Be2 Bd6 7.f4 Nbd7 8.Nf3 0–0 9.0–0 Qc7 10.Qe1 Re8 11.Qg3=; 6.Bd3 Bd6 7.Nf3 Nbd7 8.0–0 e5 9.Nh4 0–0 10.Nf5 Bc7 11.f4+=; 6.Nf3 Nbd7 7.Be2 Bd6 8.0–0 e5 9.d3 0–0 10.e4 de4 11.de4+=) 6...c4 7.Nf3 Bb4 8.c3 Bd6 9.Ba3 0–0 10.Be2 Re8 11.Bd6=; B) 5.Nf3 B1) 5...Bf5 6.e3 (6.Bf6 ef6 7.e3 Bd6 8.Nc3 Be6 9.Be2 0–0 10.d4 c4 11.0–0=; 6.Nh4 Bg4 7.h3 Bc8 8.Nf3 e6 9.e3 Nbd7 10.Be2 Bd6 11.d4=; 6.h3 Nbd7 7.e3 e6 8.Nh4 Bg6 9.Ng6 hg6 10.c4 Bd6 11.Be2=) 6...e6 7.Be2 Bd6 8.Nh4 Be4 9.d3 Bg6 10.f4 Nbd7 11.Ng6=; B2) 5...e6 6.c4 (6.d4 c4 7.e3 Bb4 8.c3 Bd6 9.Ba3 0–0 10.Be2 Re8 11.Bd6=; 6.e3 Bd6 7.Be2 0–0 8.0–0 Nbd7 9.d4 cd4 10.ed4 Re8 11.Re1=; 6.d3 Nbd7 7.e3 Bd6 8.Be2 e5 9.0–0 0–0 10.e4 de4 11.de4+=) 6...Bd6 7.d4 0–0 8.cd5 ed5 9.dc5 Bc5 10.e3 Bb4 11.Bc3=; B3) 5...Bg4 6.Ne5 Bf5 7.e3 Nbd7 8.g4 Be4 9.f3 Ne5 10.Be5 Bg6 11.h4=.

4.a4 e6 A) 5.e3 d5 6.d4 (6.Be2 Nbd7 7.f4 Bd6 8.Nf3 0–0 9.0–0 Qc7 10.Qe1 Re8 11.Qg3=; 6.Nf3 Nbd7 7.d4 cd4 8.Bd4 Bd6 9.c4 0–0 10.cd5 Nd5 11.Be2=; 6.Bd3 Bd6 7.Nf3 Nbd7 8.0–0 e5 9.Nh4 e4 10.Be2 0–0 11.d4+=) 6...c4 7.Nf3 Ne4 8.Be2 Bd6 9.0–0 0–0 10.Ba3 Bb4 11.Nfd2=; B) 5.Nf3 d5 6.d4 (6.d3 Nbd7 7.e3 Bd6 8.Be2 e5 9.0–0 0–0 10.e4 de4 11.de4+=; 6.e3 Nbd7 7.d4 Qc7 8.Be2 cd4 9.ed4 Bb4 10.c3 Bd6 11.Ba3=; 6.c4 Bd6 7.e3 0–0 8.Be2 Re8 9.d4 cd4 10.Qd4 e5 11.Qh4=) 6...c4 7.e3 Bb4 8.c3 Bd6 9.Ba3 Ba3 10.Ra3 0–0 11.Be2=.

4.bc6 dc6 5.Nf3 e6 =.

4.Nf3 d5 =.

4.a4 d6

5.e3 A) 5...e5 6.Be2 (6.d4 cd4 7.ed4 e4 8.d5 Be7 9.Ne2 0–0 10.Ng3 Re8 11.Qd4=; 6.c4 Nbd7 7.Be2 Be7 8.d3 d5 9.cd5 Nd5 10.Nf3 f6 11.0–0=; 6.f4 ef4 7.ef4 Be7 8.Nf3 0–0 9.Bc4 d5 10.Be2 Nh5 11.g3+=) 6...Be7 7.d3 0–0 8.Nf3 Bg4 9.0–0 Nbd7 10.c4 Re8 11.Nc3=; B) 5...h6= 6.d4 (6.Be2 e5 7.d4 Nbd7 8.Nf3 cd4 9.ed4 e4 10.Nfd2 d5 11.c4=; 6.Bf6 gf6 7.Nf3 e5 8.d4 cd4 9.ed4 d5 10.Qe2 e4 11.Nfd2=; 6.c4 e5 7.d4 cd4 8.ed4 e4 9.d5 Nbd7 10.f3 Nc5 11.fe4+=) 6...cd4 7.ed4 d5 8.Bd3 e6 9.Ba3 Ba3 10.Ra3 Qd6 11.Nf3+=; C) 5...Nbd7 6.d4 (6.Be2 e5 7.d4 Be7 8.de5 de5 9.Nf3 Qc7 10.Nc3 Nb6 11.e4+=; 6.Nf3 e5 7.Be2 e4 8.Ng5 d5 9.d3 h6 10.Nh3 Nb6 11.Nf4=; 6.Nc3 d5 7.d4 cd4 8.ed4 Qc7 9.Bd3 e6 10.Nge2 Bb4 11.0–0+=) 6...e5 7.de5 de5 8.Nd2 Bd6 9.Ngf3 Qe7 10.Bd3 0–0 11.Nh4=.

5.f4 Nbd7 (5...Bf5 6.e3 (6.Nf3 e6 7.e3 Be7 8.Be2 0–0 9.0–0 Nd5 10.Nc3 Nc3 11.Bc3=; 6.Bf6 ef6 7.Nf3 d5 8.e3 Be7 9.Bd3 Bd3 10.cd3 f5 11.Qc2=; 6.d3 d5 7.e3 e6 8.Nf3 Be7 9.Be2 Ng4 10.Qd2 0–0 11.0–0=) 6...e6 7.Ne2 d5 8.Ng3 Bg4 9.Be2 Be2 10.Qe2 Bd6 11.Nh5+=; 5...d5 6.e3 (6.Nf3 Bf5 7.e3 e6 8.Be2 Be7 9.0–0 h6 10.Nh4 Bh7 11.d3= ; 6.Bf6 ef6 7.e3 Bd6 8.Qf3 Be7 9.Nc3 d4 10.Nd5 0–0 11.Bc4= ) 6...Bf5 7.Nf3 e6 8.Be2 Be7 9.0–0 0–0 10.Nh4 Re8 11.Nf5= ; 5...e6 6.e3 (6.Nf3 Be7 7.e3 0–0 8.Be2 b6 9.0–0 Bb7 10.Nc3 d5 11.Qe1= ) 6...Be7 7.Nf3 0–0 8.Be2 Nd5 9.c4 Bf6 10.Qb3 Nb4 11.0–0= ) 6.Nf3 (6.e3 e5 7.Nh3 Nb6 8.Qf3 Qe7 9.Nf2 e4 10.Bf6 ef3 11.Be7=; 6.Nh3 e5 7.e3 Nb6 8.Qf3 Qe7 9.Nf2 e4 10.Qg3 d5 11.Be2=; 6.Nc3 d5 7.e3 e5 8.fe5 Ne5 9.Nf3 Nf3 10.Qf3 Bg4 11.Qf2+=) 6...b6 (6...e5 7.fe5 de5 8.Ne5 (8.e4= Ne4 9.Qe2 Nd6 10.Ne5 Ne5 11.Qe5=) 8...Ne5 9.Be5 Ng4 10.Bg3 Bd6 11.Ra3=; 6...Qc7 7.e3 e5 8.Be2 ef4 9.ef4 d5 10.f5 Bd6 11.d4+=) 7.e3 Bb7 (7...e6 8.Bd3 Be7 9.0–0 0–0 10.Nc3 Qc7 11.Be2=) 8.Be2 (8.Bc4 e6 9.0–0 Be7 10.Nc3 d5 11.Be2=) 8...g6 (8...e6 9.0–0 Be7 10.Qe1 0–0 11.Nc3=) 9.0–0 Bg7 10.c4 (10.d3 d5 11.Ne5=) 10...e6 (10...0–0 11.Nc3=) 11.Ra3 (11.d3=) 11...Qe7 12.d4 0–0 13.Nc3 (13.Nbd2 Rac8=) 13...Rac8 14.Bd3 (14.Ra1 Rfd8+=) 14...Rfd8 (14...Ng4!? 15.Qe1 Bf3 16.Rf3 cd4 17.ed4 Bd4 18.Kh1 Rfe8–+) 15.Qe2=/+ Qf8 (better is 15...Ng4 16.Ne4 d5+=) 16.e4? (better is 16.Rb3!?=) 16...cd4–/+ 17.Nd4 Nc5 (17...d5 18.Nc6 Bc6 19.bc6 de4 20.Ne4 Rc6–/+) 18.f5? (better is 18.Bc2!?+=) 18...ef5–+ 19.ef5 Re8 20.Qc2 Qe7 21.Nd1–/+ Nd3 22.Qd3 Be4 23.Qh3 Rc4 24.fg6 fg6–/+ 25.Re3? Nd5–+ 26.Nc6 Rc6 27.bc6 Bb2 28.Nb2 Ne3 29.Qe3 Bc6 30.Qb6 Qe3 31.Qe3 Re3 32.Nc4 Re2 33.Rf2 Re1 34.Rf1 Rf1 35.Kf1 Ba4 36.Ke2??Bc2 37.Na5–/+ Kf7 38.Ke3 Ke6 39.Kd4 d5 40.Nc6 Be4 41.g3 Kf5 42.Ke3 Kg4–+ 43.Kf2 Kh3 44.Kg1 h6 45.Nd4 h5 46.Nc6 Kg4 47.Kf2 Kh3 48.Kg1 h4 49.gh4 Kh4 50.Kf2 Kh3 51.Kg1 Kg4 52.Kf2 Kf4 53.Nd4 Bd3 54.Nc6 Ke4 55.Kg3? Be2 56.Kf2 Bh5 57.Nb4 d4 58.Ke1 Ke3 59.Nd5 Kd3 60.Nb4 Kc3 61.Na2?? Kb3 62.Nc1 Kc2 63.Na2 Bf3 64.Nb4 Kc3 65.Na2 Kb3 66.Nc1 Kc2 67.Na2 d3 68.Nb4 Kc3 69.Na2 Kb3 70.Kd2 Ka2 71.Kd3 Kb3 72.h4 Bh5 73.Ke3 Kc3 74.Kf4 Kd4 75.Kg3 Ke3 76.Kg2 Kf4 77.Kf2 Kg4 78.Ke3 Kh4 79.Kd2 g5 80.Ke1 g4 81.Kf2 g3 82.Kg1 Kh3 83.Kh1 Bg6 84.Kg1 g2 85.Kf2 Kh2 86.Ke1 g1Q 87.Ke2 Qd4 88.Kf1 Qe5 89.Kf2 Bh5 90.Kf1 Qe2 0–1. Schoppmeyer,Herbert – Groenegress,Wilfried, OWL–ch Rheda, 1961.

5.Bf6 A) 5...gf6 6.g3 (6.Nf3 d5 7.e3 e5 8.d4 e4 9.Nfd2 cd4 10.ed4 Qb6 11.Nb3=; 6.Nc3 Bg7 7.g3 Rg8 8.Bg2 f5 9.Nh3 e6 10.Nf4 d5 11.Nh5=; 6.e3 d5 7.c4 dc4 8.Bc4 Rg8 9.Qh5 Rg7 10.d3 Nd7 11.Nf3=) 6...Bg7 7.Bg2 f5 8.c3 e5 9.Nh3 d5 10.f4 e4 11.d3=; B) 5...ef6 6.Nf3 (6.Nc3 d5 7.e4 de4 8.Ne4 Be7 9.Bc4 0–0 10.Nf3 Nd7 11.0–0=; 6.e3 d5 7.Nf3 Bd6 8.d4 c4 9.Be2 0–0 10.0–0 Re8 11.Nc3=; 6.d4 d5 7.e3 c4 8.Nf3 Bb4 9.c3 Bd6 10.e4 Qe7 11.Qe2=) 6...Be6 7.e3 d5 8.Be2 Bd6 9.0–0 0–0 10.d4 c4 11.Nbd2=.

4.c4 b6

5.e3 e6 6.Nf3 d5 7.Be2 Nbd7 8.0–0 Bd6 9.Nc3 Bb7 10.d3 0–0 11.Qc2 Qc7 12.cd5 ed5 13.d4 c4 14.h3 Rfe8 15.Rac1 Nf8 16.a4 Ng6 17.Rfd1 Rad8 18.Bf1 Bc8 19.g3 Be6 20.Bg2 Qc8 21.Ng5 Bf5 22.e4 de4 23.Nce4 Ne4 24.Ne4 (24.Be4 Be4 25.Ne4 Qh3 26.Nd6 A) 26...Rd6?! 27.Re1 (27.Qc4 Nh4 28.Qf7 Kf7 29.Rc7 Kf8 30.Rf7 Kf7 31.gh4 Rg6) 27...Re1 28.Re1–/+; B) 26...Nh4 27.gh4 Rd6–+) 24...Qd7 25.g4 Be4 26.Be4 Nf4 27.Kf1 Qe7 28.Re1 Qh4 29.Re3 Nh3 (29...Nh3 30.Bg2 Nf4–+) 0–1. Naasen,Nils (1915) – Tessieri,Franco, IECG, 2004.

5.Bf6 gf6 6.Nc3 f5 (6...Bg7 7.Nf3=) 7.Nf3 Bg7 8.Rc1 (8.Qc2 d6=) 8...Bb7 9.Qc2 e6 10.g3 d5 (10...Bf3!? 11.ef3 0–0=) 11.cd5+= Bd5 12.Nd5 Qd5 13.Bg2 Ra7 14.0–0 0–0 15.Rfd1 Qd8 16.a4 Rd7 17.d3 Qe7 18.Nd2 Rd4 19.Nc4 Qc7 20.e3 Rg4 21.f4 Rd8+= 22.Bf3 Rg6 23.Qg2 e5 24.Kh1 ef4+= 25.ef4 Rd4 26.Qf1 Nd7 27.Re1 Nf8 28.Re3 Ne6 29.Rce1 Rd8 30.Bc6 Bc3 31.Ne5 Be1=+ 32.Re1 Nd4 33.Ng6 hg6 34.Bg2 Qd6 35.Re5 Ne6 36.Bd5 Nd4 37.Bc4 Kg7=+ 38.h4 Rd7 39.Qf2 Re7 40.Re7 Qe7 41.Kg2 Qb7 42.Kg1 Qe7 43.Kf1 Qe8 44.Qe1 Qe1 45.Ke1= f6 46.Kf2 g5 47.hg5 fg5=+ 48.Bd5 Kg6 49.Bf3 Kf6 50.fg5 Kg5 51.Bd1 f4 52.gf4 Kf4 53.Bh5 Ke5 54.Ke3 Nf5 55.Kd2 Kd4 56.Bf7 Ne3 57.Bg8 Ng2 58.Bf7 Nf4 59.Bc4 Ng6 60.Bb3 Ne5–/+ 61.Bc2 Nf3 62.Ke2 Ne5 63.Kd2 c4 64.dc4= Nc4 65.Kc1 Kc3 66.Bd1 Ne3 67.Be2 Nf5 68.Bg4 Nd6 69.Bf3 Nc4 70.Be2 Nb2=+ 71.Kb1 Na4–/+ (72.Kc1 Nc5–+) 0–1. Melich,Jindrich (2190) – Illetsko,Jaroslav (2240), CZE–chT1b Czechia, 1995.

4.c4 d5

5.cd5 Nd5 6.e4 =.

4.c4 g6

5.Nf3 Bg7= 6.g3 d5 (6...0–0 7.Bg2=) 7.cd5 Qd5 8.Bg2 0–0 9.0–0 Ne4 (9...Qh5!?=) 10.Bg7+= Kg7 11.a4 Bg4 12.Qc2 Nd7 13.Nh4 f5 14.Qb2+– Ndf6 15.f3 Qd4 16.Qd4 cd4 17.fg4 Ng4 18.Nf3 Rad8 19.Na3 Nc5 20.Nc4 (20...d3 21.ed3 Rd3 22.Rae1+–) 1–0. Gattuso – Wartig,Wolfgang, corr 3GMM–42, 1996.

5.Bf6 ef6 6.Nc3 Bg7 +=.

4.e3 e6

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

5.f4 d5 (--> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6 5.f4 Nf6).

3.Bb2 c6

4.a4 Qb6 5.e3 g6 (5...d5 6.Nf3=) 6.c4 (6.Bf6 ef6 7.Nc3 d5+=) 6...Bg7= 7.Nc3 (7.d4 d6=) 7...0–0 8.Qc2 (8.d4 d6=) 8...d6 (8...d5 9.d4=) 9.Nf3 Bf5 10.d3 Nbd7 (10...e5 11.Rb1=) 11.e4 (11.Nd4 Qc5=) 11...Bg4= 12.Be2 Nh5 (12...Bf3 13.Bf3 Ne5 14.Be2=) 13.bc6+= bc6 14.Rb1 (14.h3 Bf3 15.Bf3 Rab8=) 14...Bf3 15.Bf3+= Nf4 16.0–0 Qa7 17.Ne2 Ne2= 18.Be2 (18.Qe2 Rab8+=) unclear. Oberfrank,I – Hornyak,J, HUN, 1994.

4.c4 (--> 3.c4 c6 4.Bb2).

4.bc6 bc6 5.e3 Qb6 (5...d5 6.Nf3=) 6.Qc1 (6.Bf6 ef6 7.Nf3 Bb4=) 6...d5 7.Nf3 Bg4 8.Be2 Nbd7 9.Bd4 c5 10.Bb2 (10.Bc3 e6=) 10...Rb8 11.Bc3? (11.Bf6 Qf6 12.Nc3+=) 11...g6?? (better is 11...Bf3 12.Bf3 d4–+) 12.d3 (12.Qa3 e5 13.d3 e4 14.de4 de4=) 12...Bg7 (12...Bf3 13.Bf3 d4 14.Bd2+=) 13.Nbd2 0–0 14.0–0 d4 15.ed4 Nd5–/+ 16.dc5? Nc3–+ 17.cb6 Ne2 18.Kh1 Nc1 19.Rac1 Bf3 20.Nf3 Nb6 21.c4 Na4 22.Rfd1? Rb2 23.c5 Rc8 24.d4 Rf2 25.d5 Bh6 26.Rc4 Nb2 27.Rb1 Nc4 0–1. Fournier,Frederic (1735) – nicolo2007 (1835), Active, 2006.

4.bc6 dc6 5.Nf3 Bg4 6.d3 Qb6 7.Qc1 Nbd7 8.Nbd2 Bh5 9.g3 g6 (9...Qc7 10.Bg2=) 10.Bg2 Bh6 11.e3 0–0 12.Rb1 Qc7 13.h3 Bf3 14.Nf3 Nd5 15.0–0 N7f6 (15...N5f6 16.c4+=) 16.a3 Nh5? (better is 16...Nd7+/–) 17.g4+– Ng3 18.Re1 Ne3 (18...f6 19.c4 Ne3 20.fe3+– (20.Re3?! Ne2 21.Re2 Bc1 22.Rc1 Rae8+=; worse is 20.fg3 Ng2 21.Qh6 Qg3–+)) 19.fe3 (better is 19.Be5 Qe5 20.Ne5 Ng4+–) 19...f6 20.Kf2 e5 21.Kg3 e4 22.Kf2 ef3 23.Bf3 Qh2 24.Bg2 Bg5 25.Rh1 Bh4 26.Kf1 Qg3 27.Qe1! Qe1 28.Re1 Be1 29.Ke1 f5 30.Rf1 fg4 31.Rf8 Rf8 32.hg4 h5 33.gh5 gh5 34.Bc3 a4 35.Be5 h4 36.Bf4 Kh7? 37.Be4 Kg7 38.Kf2 Kf6 39.Kg2 Rh8 40.Kh3 Ke6 41.c4 Rg8 42.d4 Rg1 43.d5 Kd7 44.Bf5 Ke8 45.d6 b5 46.cb5 cb5 47.d7 Kd8 48.Bd6 Rh1 49.Kg2 Rd1 50.Bb4 Rd5 51.Ba5 Ke7 52.d8Q Rd8 53.Bd8 Kd8 54.Be6 Ke7 55.Bd5 Kd6 56.Kh3?? Kc5 57.Kh4 b4 58.ab4?? Kb4 59.Kg5 Kc5 60.Kf6 Kd6 61.Ba2 1–0. Shishkin,Va (1880) – Mushak,Alexandr, Petrovskaya Ladya Open, Peterhof RUS, 2008.

4.bc6 Nc6 5.Nf3 e6 6.e3 d5 7.Bb5 Bd7 8.0–0 Bd6 9.d3 0–0 10.Re1 Qe7 11.Nbd2 e5 12.Kh1 Rac8 13.d4 e4–/+ 14.Bc6 bc6 15.Ne5 Ne8 16.f4 Bf5 17.c4 (17...f6 18.Ng4–/+). purplepeace (2125) – lucperetti (1985), net–chess.com, 2005.

4.e3 d5 5.Nf3=.

4.e3 e6 5.f4 a4 6.Nf3 a3 7.Bf6 Qf6 8.Nc3 Bb4 9.Ne4 Qe7 10.c3 Ba5 11.Bd3 d5 12.Ng3 c5 13.0–0 b6 14.Ne5 h6? (better is 14...0–0) 15.Nh5 0–0 16.Rf3 c4 17.Rg3 cd3 18.Rg7 Kh8 19.Qg4 Nd7 20.Rh7 Kh7 21.Qg7 1–0. Wall,Bill – Guest239458, playchess.com, 2012.

4.a4 cb5

5.ab5 Qc7 6.Nf3 +=.

5.ab5 b6

6.c4 Bb7 7.e3 e6 8.Nf3 Bb4 9.Be2 0–0 10.0–0 d6 11.d4 Ne4 12.Nbd2 Nd7 13.Ne4 Be4 14.Bd3 f5 15.Rc1 Rc8 16.Ne1 d5 17.cd5 Bd5 18.g3 Rc1 19.Qc1 Nf6 20.Ng2 Qe7 21.Nf4 Rc8?? 22.Nd5 Nd5 23.Qd1 Bc3= 24.Ba3?? Bb4 25.Bb2= Bc3 ½–½. Johansson,Roland – Svedenloef,Einar, corr SSKK Veteran–SM, 1987.

6.Nf3 e6 =.

4.a4 d5

5.e3 g6 6.Nf3 Bg7 7.Be2 0–0 8.0–0 Nbd7 9.d4 Ne4 10.Nbd2 Nd6 11.bc6 bc6 12.c4 Ba6 13.Qc2 Nb6 14.Ne5 Be5 15.de5 Ndc4 16.Nc4 Bc4 (worse is 16...dc4 17.Rfd1 Qc7 18.e4+=) 17.Rfc1 Be2 18.Qe2 Nc4 19.Bd4 Rb8 20.e6 (20.e4!?–/+) 20...fe6–+ 21.Rc4 dc4 22.Qc4 Qd5 23.Qc3 Qf5 24.f4 (24.Qe1 Rb4–+) 24...Rb1 25.Rb1 Qb1 26.Kf2 Qa2 27.Kg3 Qa4 28.Qc5 Kf7 29.Qg5 Qb5 30.Qh6 Qh5 31.Qg7 Ke8 32.h4 h6 33.Qh7 Kd7 34.Bg7 Rf7 35.Qh8 Qe2 36.Bd4 g5! 37.Qb8 gf4 38.Kh2 Qa6 39.Be5 Qc8 40.Qa7–/+ Ke8 41.ef4 Rf5 42.Qa5 c5 43.Qb5 Kf7 44.Qc4 Qc6 45.g4 Re5 46.fe5 Qd5 47.Qc3+= c4 48.Kg3 Kg7 49.h5 Qb5 50.Kf2 Qb3 51.Qc1 Qb6 52.Kf3 Qb5 53.Kf2 Qb3 54.g5 Qd3 55.gh6 Kh7 56.Qg5?? Qf5–+ 57.Qf5 ef5 58.e6 Kh6 59.Ke3 Kh5 60.Kd4 Kg4 61.Kc4 f4 62.Kd5 f3 63.Kc6 Kg3 0–1. Ehrlich,Hans Georg (1930) – Rehfeldt,Frank (2050), Muensterland Verbandsliga, 2008.

4.a4 g6

5.Nc3 A) 5...Bg7 A1) 6.e3 d6 (6...0–0 7.Rb1 d6 8.Nf3 Nbd7 9.bc6 bc6 10.Be2 Nc5 11.0–0 Rb8; 6...d5 7.Nf3 0–0 8.Be2 Nbd7 9.d4 Ne4 10.0–0 Ndf6 11.bc6 bc6) 7.Nf3 Nbd7 8.d4 0–0 9.Bd3 Nd5 10.Qd2 N7f6 11.0–0 Nb4; A2) 6.Nf3 d5 (6...0–0 7.e3 d5 8.Be2 Nbd7 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6; 6...d6 7.g3 0–0 8.Bg2 Nbd7 9.bc6 bc6 10.0–0 Rb8 11.Rb1 Nd5) 7.e3 0–0 8.Be2 Nbd7 9.d4 Ne4 10.0–0 Ndf6 11.bc6 bc6 ; B) 5...d6 B1) 6.g3 d5 (6...Bg7 7.Nf3 d5 8.d3 0–0 9.Bg2 Bg4 10.0–0 Nbd7 11.Qd2 Qc7; 6...Bh6 7.Nf3 0–0 8.Bg2 Qb6 9.0–0 Be6 10.e3 c5 11.Ne2 Nbd7; 6...Nbd7 7.Nf3 Bg7 8.Bg2 0–0 9.0–0 Qc7 10.Rb1 Nc5 11.bc6 bc6; 6...Qb6 7.Nf3 Bh6 8.Bg2 0–0 9.0–0 Be6 10.e3 c5 11.h4 Bg4; 6...Qc7 7.Nf3 Bg7 8.Bg2 0–0 9.Rb1 Nbd7 10.0–0 Nc5 11.bc6 bc6) 7.Nf3 Bg7 8.d3 0–0 9.Bg2 Bg4 10.0–0 Nbd7 11.Qd2 Qc7 ; B2) 6.e3 Nbd7 (6...Bg7 7.Nf3 Nbd7 8.d4 0–0 9.Bd3 Nd5 10.Qd2 N7f6 11.0–0 Nb4; 6...Bh6 7.Nf3 Nbd7 8.h4 Ne5 9.Ne5 de5 10.Bc4 Bf5 11.f3 Qc7) 7.Nf3 Bg7 8.d4 0–0 9.Bd3 Nd5 10.Qd2 N7f6 11.0–0 Nb4; B3) 6.Nf3 Bg7 (6...Nbd7 7.d4 Bg7 8.e4 0–0 9.Bd3 c5 10.0–0 cd4 11.Nd4 Qb6; 6...Bh6 7.e3 Nbd7 8.Be2 0–0 9.d4 Nb6 10.h4 Nbd5 11.0–0 Qc7; 6...Qb6 7.Rb1 Bg7 8.e3 0–0 9.Bd3 cb5 10.Nb5 Na6 11.Bd4 Nc5; 6...Qc7 7.g3 Bg7 8.Bg2 0–0 9.0–0 Nbd7 10.Rb1 Nc5 11.bc6 bc6) 7.g3 d5 8.e3 0–0 9.Bg2 Nbd7 10.0–0 Nc5 11.Ne5 Nfd7; C) 5...Bh6 C1) 6.e3 0–0 (6...d6 7.Nf3 0–0 8.Rb1 Nbd7 9.Be2 Nc5 10.0–0 Qc7 11.bc6 bc6; 6...d5 7.Nf3 Nbd7 8.d4 0–0 9.Bd3 c5 10.0–0 cd4 11.ed4 b6) 7.h4 d5 8.Be2 e5 9.h5 g5 10.Nf3 d4 11.Nb1 Re8; C2) 6.h4 d5 (6...d6 7.e3 Nbd7 8.Nf3 Ne5 9.Ne5 de5 10.Bc4 Rb8 11.Ba3 0–0; 6...Qb6 7.e3 d5 8.Be2 Nbd7 9.Nf3 Nc5 10.Rb1 Qc7 11.d4 Nce4) 7.e3 Nbd7 8.Nf3 Qc7 9.g4 Bg7 10.h5 Rg8 11.hg6 hg6; C3) 6.e4 d6 (6...d5 7.ed5 cd5 8.Nf3 0–0 9.Bd3 Nbd7 10.Ba3 Qb6 11.0–0 Nc5; 6...Bg7 7.e5 Nh5 8.Qe2 0–0 9.Nh3 f5 10.Ng5 e6 11.h4 h6; 6...0–0 7.e5 Nh5 8.Nf3 d6 9.Bc4 de5 10.0–0 Nd7 11.bc6 bc6) 7.Nf3 0–0 8.Bc4 d5 9.ed5 cd5 10.Bb3 Be6 11.Nd4 Qb6; C4) 6.Nf3 0–0 (6...d6 7.g3 Qb6 8.Rb1 0–0 9.Bg2 Be6 10.0–0 c5 11.e3 Nbd7; 6...d5 7.e3 Nbd7 8.g4 Bg7 9.bc6 bc6 10.g5 Ne4 11.Rb1 0–0; 6...Qb6 7.e3 0–0 8.Be2 d5 9.Ba3 Re8 10.0–0 Nbd7 11.d4 Bg7) 7.e3 d6 8.Rb1 Nbd7 9.Be2 Nc5 10.0–0 Qc7 11.bc6 bc6; D) 5...d5 D1) 6.Nf3 Bg7 (6...Nbd7 7.d4 cb5 8.Nb5 Bg7 9.g3 Nb6 10.Ne5 Ng4 11.e3 Ne5; 6...Bh6 7.e3 Nbd7 8.g4 Bg7 9.g5 Ne4 10.Rb1 Bc3 11.Bc3 0–0) 7.e3 0–0 8.Be2 cb5 9.Nb5 Nc6 10.0–0 Bf5 11.c4 dc4; D2) 6.e3 Bg7 (6...Nbd7 7.Nf3 Bg7 8.d4 0–0 9.Be2 Ne4 10.0–0 Ndf6 11.bc6 bc6) 7.Nf3 0–0 8.Be2 Nbd7 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6.

5.e3 Qb6 A) 6.Nf3 d5 (6...Bg7 7.Bd4 c5 8.Bf6 Qf6 9.Nc3 d5 10.Bd3 0–0 11.0–0 Qd6; 6...d6 7.Na3 Nbd7 8.Nc4 Qc7 9.bc6 bc6 10.g4 h6 11.Rb1 Bg7) 7.c4 Bg7 8.Bd4 c5 9.Bf6 Qf6 10.Nc3 dc4 11.Bc4 Nd7; B) 6.Be2 Bg7 (6...d5 7.Nf3 Bg7 8.Nc3 0–0 9.0–0 cb5 10.Nb5 Nc6 11.c4 Bg4; 6...Bh6 7.Nf3 0–0 8.Bf6 ef6 9.Nc3 Re8 10.h4 f5 11.h5 Bg7; 6...cb5 7.ab5 d6 8.Na3 Qc7 9.Nf3 Nbd7 10.Nc4 Bg7 11.Bd4 a4; 6...d6 7.Bd4 Qc7 8.Nf3 Bg7 9.Na3 e5 10.Bc3 0–0 11.Nc4 Nbd7) 7.Nf3 0–0 8.Nc3 d5 9.0–0 cb5 10.Nb5 Nc6 11.c4 Bg4; C) 6.Bd3 d5 (6...Bg7 7.Nf3 d5 8.Nc3 Nbd7 9.0–0 Nc5 10.Rb1 Nd3 11.cd3 0–0) 7.Bf6 ef6 8.Nc3 Nd7 9.Nf3 Bb4 10.bc6 bc6 11.0–0 0–0; D) 6.Nc3 Bg7 (6...d5 7.Rb1 Bh6 8.bc6 bc6 9.Ne4 Qd8 10.Nf6 ef6 11.Ba3 Bf8; 6...d6 7.Nf3 Bg7 8.Rb1 0–0 9.Bd3 cb5 10.Nb5 Na6 11.Bd4 Nc5) 7.Nf3 0–0 8.Bd3 d5 9.0–0 cb5 10.Nb5 Nc6 11.c4 Be6.

5.e3 d5 6.Be2 (6.Bf6 ef6 7.Nf3 Bd6= (7...Bc5 8.Bd3 0–0 9.Nc3 Nd7 10.0–0 Ne5 11.bc6 bc6) 8.c4 dc4 9.Bc4 cb5 10.ab5 0–0 11.Nc3 Nd7; 6.Nc3 Nbd7 (6...Bg7 7.Nf3 0–0 8.Bd3 Nbd7 9.bc6 bc6 10.Ba3 Ng4 11.0–0 Rb8; 6...Qc7 7.Nf3 Nbd7 8.d4 Bg7 9.Be2 0–0 10.0–0 Nb6 11.Ne5 Nfd7; 6...Bh6 7.Nf3 Nbd7 8.Ba3 Ne4 9.bc6 bc6 10.Ne4 de4 11.Nd4 Ne5) 7.Nf3 Bg7 8.Be2 0–0 9.0–0 Nc5 10.d4 Nce4 11.Qe1 Nc3; 6.Nf3 Bg7 (6...Nbd7 7.g4 h6 8.Nc3 Bg7 9.Rg1 Nc5 10.d4 Nce4 11.Ne5 Qd6 ; 6...Bh6 7.Nc3 Nbd7 8.g4 Bg7 9.g5 Ne4 10.Rb1 Bc3 11.Bc3 0–0) 7.Nc3 Nbd7 8.d4 0–0 9.Bd3 cb5 10.Nb5 Ne4 11.c3 Ndf6; 6.Bd3 Nbd7 (6...Bg7 7.Nf3 Nbd7 8.0–0 0–0 9.Nc3 Nc5 10.h3 Qc7 11.Rb1 Nd3; 6...cb5 7.Bb5 Nc6 8.Nc3 Bg7 9.Nf3 0–0 10.0–0 Bf5 11.d3 Qc7) 7.Nc3 Bg7 8.bc6 bc6 9.Nf3 Nc5 10.0–0 0–0 11.Rb1 Rb8) 6...Bg7 (6...Nbd7 7.Nf3 Bg7 8.Nc3 0–0 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6; 6...Bh6 7.Nf3 0–0 8.Nc3 Nbd7 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6; 6...cb5 7.ab5 Bg7 8.Nf3 0–0 9.0–0 Nbd7 10.Nc3 Nc5 11.Na4 Na4; 6...Qb6 7.Nf3 Bg7 8.Nc3 0–0 9.0–0 cb5 10.Nb5 Nc6 11.c4 Be6; 6...Qd6 7.Nf3 Nbd7 8.bc6 bc6 9.Ba3 c5 10.Nc3 Bg7 11.Rb1 0–0) 7.f4 (7.Nf3 0–0= (7...cb5 8.Bb5 Nc6 9.Nc3 0–0 10.0–0 Bf5 11.d3 Qc7) 8.Nc3 Nbd7 9.d4 Ne4 10.0–0 Ndf6 11.bc6 bc6) 7...0–0 (7...cb5 8.Bb5 Nc6 9.Nf3 0–0 10.0–0 Bg4 11.Qe2 Ne4) 8.Nf3 Bg4 (8...c5 9.0–0= Qb6 10.Na3 Bg4 11.c4 Nbd7; 8...cb5 9.ab5 Nbd7 10.0–0 Nc5 11.Bd4 Qd6) 9.Na3 (9.0–0 c5= (9...cb5 10.ab5 Nbd7 11.Nc3 Nc5) 10.h3 Bf3 11.Bf3 Nbd7; 9.Nc3 Ne4 10.0–0 cb5 11.ab5 Bc3) 9...Nbd7 (9...Qd6 10.Be5 Qb4 11.c3 Qb2) 10.0–0 Nb6 (10...Nc5 11.c4= (11.bc6 bc6) 11...Bf3; 10...Bf3 11.Bf3 Nc5) 11.bc6 (11.c4 Ne4) 11...bc6 12.c4 dc4 13.Rc1 (13.Nc4 Nc4 14.Bc4=) 13...Ne4+= 14.Bg7 Kg7 15.Nc4 (15.Bc4? Bf3 16.Qf3 Nd2 17.Qc6 Nf1 18.Rf1 Rc8–+) 15...Bf3 16.gf3 (worse is 16.Rf3 Nc4 17.Bc4 Nd2–/+) 16...Nc5 (16...Nd6 17.Ne5 Rc8 18.Nc6+=) 17.Nb6+/– Qb6 18.Qc2 Ne6 19.Qc6 Qb4 (19...Qc6 20.Rc6 Rab8 21.Bb5+/–) 20.Qc3 f6 (20...Qc3 21.Rc3 Rab8 22.Bb5+/–) 21.Qb4 ab4 22.Bb5 Rfc8 (better is 22...Rfd8 23.d4 Nd4 24.ed4 Rd4+–) 23.Rc8 Rc8 24.Bd7 Ra8 25.Be6 Ra4 26.Bc4 1–0. Szollosi,Laszlo Jr – Koczka,Zsolt (2240), Mesterjelolt–ch, 1990.

5.e3 d6 A) 6.Nf3 Bg7 (6...Nbd7 7.Nc3 Bg7 8.d4 0–0 9.Bd3 Nd5 10.0–0 Nc3 11.Bc3 Nc5; 6...Bh6 7.Nc3 Nbd7 8.d4 0–0 9.Bd3 Nb6 10.0–0 Be6 11.Qe2 Nbd5) 7.Nc3 0–0 8.Be2 Nbd7 9.0–0 Nc5 10.d4 Nfe4 11.bc6 bc6; B) 6.Nc3 Nbd7 (6...Bg7 7.Nf3 Nbd7 8.d4 Nd5 9.Bd3 0–0 10.0–0 Nc3 11.Bc3 Nc5) 7.Nf3 Bg7 8.d4 Nd5 9.Bd3 0–0 10.0–0 Nc3 11.Bc3 Nc5; C) 6.Be2 Nbd7 (6...Bg7 7.Nf3 cb5 8.Bb5 Nc6 9.Nc3 0–0 10.0–0 Bf5 11.h3 d5; 6...cb5 7.Bb5 Nc6 8.Nc3 Bg7 9.Nf3 0–0 10.0–0 Bf5 11.h3 d5; 6...Bh6 7.Nf3 cb5 8.Bb5 Nc6 9.Nc3 0–0 10.h3 Qb6 11.0–0 Bg7) 7.Nc3 Bg7 8.Nf3 0–0 9.d4 Nb6 10.0–0 Nbd5 11.Nd5 cd5; D) 6.Na3 Nbd7 (6...Bg7 7.Bd3 Nbd7 8.Nf3 Nc5 9.bc6 bc6 10.Nc4 0–0 11.0–0 Rb8; 6...Bf5 7.Nf3 Bg7 8.Nc4 cb5 9.ab5 d5 10.Nce5 Nbd7 11.g4 Ne5; 6...Bh6 7.Nf3 0–0 8.Nc4 Nbd7 9.bc6 bc6 10.Nd4 Qc7 11.Qf3 d5; 6...Bd7 7.Nf3 Bg7 8.Bd3 0–0 9.0–0 cb5 10.ab5 a4 11.Nb1 Nd5) 7.Nf3 Bg7 8.Nc4 cb5 9.ab5 0–0 10.Be2 d5 11.Nce5 Ne4; E) 6.Bf6 ef6 7.Nc3 Bg7 8.h4 Nd7 9.Nf3 f5 10.h5 Nc5 11.bc6 bc6.

5.e3 Bg7 A) 6.Nc3 0–0 (6...d5 7.Nf3 0–0 8.Be2 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; 6...d6 7.Nf3 0–0 8.Be2 cb5 9.Nb5 Nc6 10.0–0 Bd7 11.h3 Ne4) 7.Nf3 d5 8.Be2 Nbd7 9.0–0 Nc5 10.Qe1 Bf5 11.Nd4 Qd7; B) 6.Be2 cb5 (6...d5 7.Nc3 0–0 8.Nf3 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; 6...0–0 7.Nc3 d5 8.Nf3 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; 6...d6 7.Nf3 cb5 8.ab5 Nbd7 9.Nc3 0–0 10.d4 Nb6 11.0–0 a4) 7.Bb5 Nc6 8.Ne2 0–0 9.Nbc3 d5 10.0–0 Bf5 11.h3 e5; C) 6.Bd3 d5 (6...0–0 7.Nc3 d5 8.Nf3 Nbd7 9.bc6 bc6 10.Ba3 Ng4 11.Rb1 Nde5; 6...d6 7.Nf3 Nbd7 8.Nc3 0–0 9.0–0 Nc5 10.h3 e5 11.Bc4 Be6) 7.Nc3 Nbd7 8.Nf3 Nc5 9.0–0 0–0 10.Ba3 Nfe4 11.bc6 bc6; D) 6.f4 0–0 (6...d5 7.Nf3 0–0 8.Nc3 Ne4 9.Be2 Qb6 10.Ne5 Nd7 11.Ne4 Ne5; 6...d6 7.Nf3 Nbd7 8.Nc3 Nc5 9.Be2 0–0 10.0–0 Bf5 11.Nd4 Qd7; 6...Qc7 7.Nf3 0–0 8.Nc3 d5 9.Be2 Nbd7 10.0–0 Nc5 11.Rb1 Bd7; 6...Qb6 7.Nf3 0–0 8.Nc3 d5 9.Rb1 c5 10.Bd3 c4 11.Be2 Nbd7) 7.Nc3 Ne4 8.Nf3 d5 9.Be2 cb5 10.ab5 Nc3 11.Bc3 Bc3; E) 6.Nf3= d5 (6...0–0 7.Nc3 d5 8.Be2 Nbd7 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6; 6...d6 7.Nc3 0–0 8.Be2 cb5 9.Nb5 Nc6 10.0–0 Bf5 11.d3 Qb6; 6...cb5 7.ab5 0–0 8.Nc3 d5 9.Bd3 Nbd7 10.Ba3 Nb6 11.0–0 Re8) 7.Nc3 0–0 8.Be2 Nbd7 9.0–0 Nc5 10.d4 Nce4 11.bc6 bc6.

5.e4 A) 5...d5 A1) 6.e5 Ne4 7.d3 Nc5 8.d4 Ne4 9.f3 Ng5 10.Kf2 Bg7 11.Ne2 Qb6; A2) 6.Nc3 d4 (6...Bg7 7.ed5 Nd5 8.Nf3 0–0 9.Be2 Nd7 10.0–0 Nc5 11.d4 Nc3) 7.Nce2 e5 8.Nf3 Bd6 9.Ng3 0–0 10.Bc4 Nbd7 11.0–0 Nb6 ; A3) 6.ed5 cd5 7.Nf3 Nbd7 8.Bd4 Bg7 9.Bd3 0–0 10.0–0 Ne4 11.Bg7 Kg7; B) 5...d6 B1) 6.Bf6 ef6 7.Nc3 Bg7 8.Nf3 0–0 9.Bd3 cb5 10.Bb5 f5 11.Qe2 Nc6; B2) 6.Nf3 Bg7 (6...Nbd7 7.Nc3 Nc5 8.e5 de5 9.bc6 bc6 10.Ne5 Qc7 11.d4 Ncd7) 7.Bd3 Nbd7 8.Qe2 Nc5 9.0–0 0–0 10.Nc3 Bd7 11.Rab1 Nd3; B3) 6.Bd3 Nbd7 (6...Bg7 7.Nc3 Nbd7 8.Nf3 Nc5 9.Qe2 Qb6 10.0–0 0–0 11.Rab1 Nd3; 6...cb5 7.Bb5 Nc6 8.Nf3 Bg7 9.Qe2 0–0 10.0–0 Bg4 11.Nc3 Qb6) 7.Nf3 Bg7 8.Nc3 Nc5 9.Qe2 0–0 10.0–0 Qc7 11.Rab1 Bd7; B4) 6.Nc3 Bg7 (6...Bh6 7.Nf3 0–0 8.Bc4 d5 9.ed5 cd5 10.Bb3 Be6 11.0–0 Qb6; 6...Nbd7 7.d4 d5 8.e5 Ne4 9.Nf3 Bh6 10.Bd3 Nc3 11.Bc3 c5) 7.d4 d5 8.Bd3 de4 9.Ne4 Ne4 10.Be4 Qb6 11.Qd3 Na6; C) 5...Bh6 C1) 6.Nf3 d6 (6...d5 7.ed5 cd5 8.Bd3 0–0 9.0–0 Nbd7 10.Bd4 e5 11.Ne5 Ne5; 6...0–0 7.e5 Ne4 8.Nc3 d5 9.ed6 Nd6 10.Be2 Bf5 11.0–0 Nd7) 7.Nc3 0–0 8.Bc4 Nbd7 9.0–0 Ne5 10.Be2 Nf3 11.Bf3 Be6; C2) 6.Bd3 d5 (6...d6 7.Nf3 0–0 8.Nc3 Nbd7 9.0–0 Nc5 10.Qe2 Bg4 11.Rab1 Bf3; 6...0–0 7.e5 Nh5 8.Nf3 Nf4 9.0–0 d6 10.Nc3 Nd3 11.cd3 Bf5) 7.ed5 cd5 8.Nf3 0–0 9.0–0 Nbd7 10.Bd4 e5 11.Ne5 Ne5 ; C3) 6.Nc3 d6 (6...d5 7.ed5 cd5 8.Nf3 0–0 9.Bd3 Nbd7 10.0–0 e5 11.g4 Ng4) 7.Nf3 0–0 8.d4 Be6 9.Bd3 Qb6 10.Rb1 Qc7 11.0–0 Nbd7; C4) 6.e5 Ne4 7.Bd3 Nc5 8.Nf3 d5 9.Nc3 0–0 10.0–0 Nbd7 11.Qe2 Bg7; D) 5...Bg7= D1) 6.Bd3 d6 (6...0–0 7.Nf3 d5 8.ed5 Nd5 9.Bg7 Kg7 10.0–0 cb5 11.ab5 Nf4; 6...cb5 7.ab5 0–0 8.Nf3 d6 9.Nc3 Nbd7 10.Na4 Ng4 11.Bg7 Kg7) 7.Nf3 Nbd7 8.Nc3 Nc5 9.Qe2 0–0 10.0–0 Qb6 11.Rab1 Nd3; D2) 6.e5 Nd5 7.Nf3 d6 8.Nc3 de5 9.Bc4 Be6 10.Ne4 Nd7 11.0–0 0–0 ; D3) 6.Nf3 d6 (6...Qb6 7.e5 Ng4 8.d4 0–0 9.Nc3 d5 10.Ba3 Re8 11.Bd3 Be6; 6...0–0 7.Bd3 d5 8.e5 Nh5 9.0–0 Nd7 10.g3 Nc5 11.Nc3 Bh3) 7.Bd3 cb5 8.ab5 Nbd7 9.Nc3 Nc5 10.Qe2 0–0 11.0–0 a4.

5.Nf3 A) 5...Bg7 A1) 6.e3 d5 (6...0–0 7.Nc3 d5 8.Be2 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; 6...d6 7.Nc3 Nbd7 8.d4 Nd5 9.Bd3 0–0 10.Nd5 cd5 11.c4 dc4; 6...cb5 7.Bb5 0–0 8.Nc3 Nc6 9.0–0 d5 10.h3 Bf5 11.Nh4 Bd7) 7.Nc3 0–0 8.Be2 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; A2) 6.g3 d5 (6...0–0 7.Bg2 d5 8.0–0 Qb6 9.Nc3 d4 10.Nb1 Nd5 11.c3 d3; 6...cb5 7.ab5 0–0 8.Bg2 d5 9.0–0 Nbd7 10.Nc3 Nb6 11.d3 a4) 7.Bg2 0–0 8.0–0 Bg4 9.h3 Bf3 10.ef3 cb5 11.ab5 Nbd7; A3) 6.Nc3 d5 (6...d6 7.g3 0–0 8.Bg2 d5 9.d3 Nbd7 10.0–0 Nc5 11.bc6 bc6; 6...0–0 7.e3 d5 8.Be2 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7) 7.e3 0–0 8.Be2 Nbd7 9.d4 Nb6 10.0–0 Qc7 11.Ne5 Nfd7; B) 5...d6 B1) 6.g3 Nbd7 (6...Bg7 7.Bg2 0–0 8.Nc3 d5 9.Qc1 Bg4 10.0–0 Nbd7 11.d3 Bf3; 6...Bh6 7.Nc3 Qb6 8.Bg2 Be6 9.0–0 0–0 10.e3 c5 11.h4 Bg4; 6...cb5 7.ab5 Nbd7 8.Bg2 Bh6 9.Nc3 Nc5 10.0–0 0–0 11.d4 Nce4; 6...d5 7.Bg2 Bg7 8.Bd4 Nbd7 9.bc6 bc6 10.0–0 c5 11.Bf6 Nf6; 6...Bg4 7.Nc3 Nbd7 8.Bg2 Qb6 9.Rb1 Bg7 10.bc6 bc6 11.Nd5 cd5) 7.Nc3 Nc5 8.d4 Nce4 9.Ne4 Ne4 10.d5 f6 11.dc6 bc6; B2) 6.Nc3 Bg7 (6...Nbd7 7.g3 Bg7 8.Bg2 0–0 9.0–0 Qc7 10.Rb1 Nc5 11.bc6 bc6; 6...Bh6 7.e3 Nbd7 8.Bc4 d5 9.Be2 0–0 10.0–0 Nc5 11.Rb1 Qc7) 7.g3 0–0 8.Bg2 d5 9.0–0 Nbd7 10.d4 cb5 11.Nb5 Ne4; B3) 6.e3 Bg7 (6...Nbd7 7.Nc3 Bg7 8.d4 0–0 9.Bd3 Nd5 10.Qd2 N7f6 11.0–0 Nb4; 6...Bh6 7.Bf6 ef6 8.Nc3 0–0 9.h4 Re8 10.h5 g5 11.Bd3 Bg4) 7.Nc3 Nbd7 8.d4 0–0 9.Bd3 Nd5 10.Qd2 N7f6 11.0–0 Nb4; B4) 6.Bf6 ef6 7.Nc3 Bg7 8.g3 0–0 9.Bg2 f5 10.0–0 Be6 11.e3 Bc4; B5) 6.Na3 Bg7 (6...Bh6 7.Nc4 0–0 8.e3 cb5 9.ab5 Nbd7 10.Be2 Nc5 11.0–0 Be6) 7.g3 Nbd7 8.Bg2 Qc7 9.0–0 0–0 10.d3 Nb6 11.c4 Be6; C) 5...cb5 6.ab5 (6.g4 h6 7.Nc3 b4 8.Nd5 Nc6 9.e3 Bg7 10.Bd3 0–0 11.Bf6 Bf6) 6...Bg7 (6...d5 7.c4 Bg7 8.e3 0–0 9.d4 Be6 10.Nbd2 Nbd7 11.Bd3 Nb6; 6...d6 7.Nc3 Nbd7 8.e3 Bg7 9.d4 0–0 10.Bd3 Nb6 11.0–0 a4) 7.Nc3 0–0 8.e3 d5 9.Bd3 Nbd7 10.Ba3 Nb6 11.0–0 Qc7; D) 5...d5 D1) 6.Nc3 Nbd7 (6...Bg7 7.e3 Nbd7 8.d4 0–0 9.Bd3 cb5 10.Nb5 Ne4 11.c3 Ndf6; 6...Bf5 7.e3 Nbd7 8.Nd4 Qc7 9.Nf5 gf5 10.Rb1 Rg8 11.g3 Rb8) 7.g4 Bg7 8.g5 Ne4 9.Bg2 cb5 10.ab5 0–0 11.Qc1 Bc3; D2) 6.e3 Bg7 (6...Nbd7 7.g4 h6 8.Nc3 Bg7 9.Rg1 Nc5 10.d4 Nce4 11.Ne5 Qd6) 7.Nc3 0–0 8.Bd3 Nbd7 9.Ba3 Ne4 10.Be4 de4 11.Ne4 cb5; D3) 6.h3 Bg7 7.e3 0–0 8.Nc3 Nbd7 9.Bd3 Nc5 10.0–0 Qc7 11.Qe2 Bd7; D4) 6.g3 Bg7 (6...Bh6 7.Bg2 0–0 8.0–0 cb5 9.ab5 Nbd7 10.Nc3 Nc5 11.Na4 Na4; 6...Bg4 7.Ne5 h5 8.Nd3 Qb6 9.Bg2 h4 10.Bf6 ef6 11.Nc3 hg3; 6...Nbd7 7.Bg2 Bg7 8.0–0 0–0 9.Nc3 Nc5 10.d4 Nce4 11.Ne5 Qc7) 7.Bg2 0–0 8.0–0 Bg4 9.h3 Bf3 10.ef3 cb5 11.ab5 Nbd7 ; D5) 6.c4 Nbd7 (6...Bg7 7.cd5 cd5 8.Bd4 0–0 9.Nc3 Bf5 10.d3 Nbd7 11.h3 Rc8; 6...Bh6 7.e3 0–0 8.Nc3 Nbd7 9.d4 Nb6 10.c5 Nc4 11.Bc4 dc4; 6...Bf5 7.Nd4 Nbd7 8.e3 Bg7 9.Nf5 gf5 10.Qc2 e6 11.Be2 0–0; 6...dc4 7.Na3 Bg7 8.Nc4 0–0 9.Qb3 Qd5 10.e3 Bg4 11.Be2 Nbd7) 7.Nc3 Nc5 8.d4 Nce4 9.bc6 bc6 10.Ne5 Bg7 11.Qb3 Ra6.

4.e3 cb5

5.Bb5 b6 6.Nf3 Ba6 7.Ba6 Na6 8.Bf6 ef6 9.0–0 d6 (9...d5 10.Qe2+=) 10.Qe2 Be7 (10...Nc7 11.e4+/–) 11.Qb5 Kf8 12.Nc3 Nc5 13.Nd5 g6 (13...Rb8 14.Nd4 Qe8 15.Qe2+–) 14.Nb6 Rb8 15.Rfb1 Ne4?? 16.Nd7 Qd7 17.Qd7 Rb1 18.Rb1 Kg7 19.Qe7 Rc8 20.Rb7 d5 21.Qf7 Kh6 22.Qh7# 1–0. kamret (2175) – twlssn03, GameColony.com, 2003.

5.Bb5 Nc6 6.Nf3 e6 7.c4 (7.0–0 Be7 (7...d5 8.Ne5 Qc7 9.f4 Be7 10.Ng4 Qd8=) 8.Nc3 0–0 9.e4 d5 10.Qe2 Qc7=) 7...d5 (7...Be7 8.0–0 0–0 9.Qb3 Na7 10.Ba4 d5=) 8.Ne5 (8.Nc3 Bd6 (8...Be7+= 9.cd5 Nd5 10.Nd5 Qd5+=) 9.cd5 ed5 10.Na4 Be6=; 8.cd5 Nd5 9.0–0 f6 10.Nc3 Nc7+=) 8...Qb6 (8...Bd7 9.Nd7 Qd7 10.Bf6 (10.Nc3+= dc4=) 10...gf6+=) 9.Bd4 (9.Qa4 Nd7 (9...Bd7 10.Nd7 Nd7+/–) 10.cd5 (10.Nd7 Bd7 11.cd5 ed5+/–) 10...ed5+=) 9...Bc5+= (9...Qc7 10.cd5 Nd5+=) 10.Bc5 Qc5 11.d4 Qb4 12.Nd2 0–0 (12...Bd7 13.Rb1 Qd6 14.0–0+=) 13.Nc6+/– bc6 14.Bc6 Ra7 15.c5 Qb8 (15...Rc7 16.Rb1 Qa3 17.Qa4 Qa4 18.Ba4+–) 16.Qb3+– Qc7 17.Qb6 Bd7 (17...e5 18.Nf3+–) 18.Qc7 Rc7 19.Bd7 Nd7 20.Rb1 Rb8 (20...e5 21.f4 f6 22.0–0+–) 21.Ke2 Rcb7?? (better is 21...Kf8+–) 22.Rb7 Rb7 23.c6 Rc7 24.cd7 Rd7 25.Rc1 g6 26.Rc8 Kg7 27.Ra8 Rc7 28.Ra5 Rc1 29.a4 Rh1 30.Nf3 Rb1 31.Ra8 Rb2 32.Nd2 Rb4 33.Kd3 Kf6 34.Kc3 Rb7 35.Nb3 Rc7 36.Nc5 e5 37.a5 ed4 38.Kd4 h5 39.Kd5 Kf5 1–0. orane (2210) – PulveRIZER11, Live Game Caissa's Web, 2004.

5.Bb5 Nc6 6.Nf3 g6 A) 7.Nc3 d5 (7...d6 8.Rb1 Bg7 9.Nd5 e5 10.Nf6 Bf6+=) 8.Ne5 Qd6 9.Na4 Bg7 10.f4 Qc7=; B) 7.Bf6 ef6 8.Nc3+= (8.0–0 d5 9.Re1 Bd6 10.Nc3 Be6+=) 8...Bg7 9.0–0 0–0 10.Rb1 d6+/–.

3.Bb2 d5

4.d3 c5 5.a4 g6 (5...e6 6.Nf3=) 6.e3 Bg7 7.Nd2 0–0 (7...Bg4 8.Be2 Be2 9.Ne2=) 8.Ngf3 Nbd7 9.g3 (9.Be2 Re8=) 9...Re8 10.Bg2 e5 11.0–0 Qc7 (11...e4 12.Ne1=) 12.Re1 (12.c4 e4 13.Ne1 Ne5 14.cd5 A) worse is 14...Nd3 15.Bf6 Ne1 16.Re1 Bf6 17.Ne4 (17.Be4?! Ba1 18.Qa1 Bg4=) 17...Ba1 18.Qa1 Re4 19.Be4+–; B) 14...Bg4+=) 12...b6 (12...Nb6 13.e4+=) 13.c3 (13.c4 e4 14.de4 de4=) 13...h6 (13...Bb7 14.e4=) 14.h3 (14.e4 Bb7=) 14...e4+= 15.de4 (15.Nh2 Bb7+=) 15...de4–/+ 16.Nh2 Bb7 17.c4 Rad8 18.Qc2 Qc8 (18...Ne5 19.Rad1–/+) 19.Rad1+= Ne5 20.Be5 Re5 21.f3 (21.Nb3 Ree8+=) 21...ef3 22.Nhf3 Re7 23.Nh4 Rde8 (23...Bg2 24.Kg2 Rde8 25.Qd3–/+) 24.Bb7 Qb7 25.Ng2 Qc7 26.Nf1 Ne4 (26...g5 27.g4–/+) 27.Nf4+= Re5 28.Rd5 (28.Qg2 Qb8+=) 28...Qb8 (28...g5 29.Re5 Qe5 30.Nd5+=) 29.Re5 (29.Rd7 Rg5 30.Kh2 Rf5+=) 29...Qe5–/+ 30.Kg2 (30.Rd1 Ng3 31.Ng3 Qe3 32.Qf2 Bd4 33.Rd4 cd4+=) 30...Qc3 (30...Qf5 31.Re2–/+) 31.Qc3 (better is 31.Re2!?+=) 31...Nc3–/+ (31...Bc3?! 32.Rd1=) 32.Ra1 Re4 (32...Re4 33.Rc1 Na4–/+ (worse is 33...Rc4 34.Nd5+=); 32...Nb5 33.Rb1 Na3 34.Rb6–/+) 0–1. Burbach – Kuhlmann, 1983.

4.d3 c6 5.bc6 Nc6 6.Nf3 +=.

4.d4 a4 5.e3 Bf5 6.c4 e6 7.Bd3 Bd3 8.Qd3 dc4 9.Qc4 Qd5 10.Qc7 (10.Qd5 Nd5 11.Ba3 c6=) 10...Bb4 (10...Qb5?? 11.Qc8 Ke7 12.Ba3 Qb4 13.Bb4; 10...Qg2?? 11.Qc8 Ke7 12.Ba3) 11.Bc3 Bd6 (better is 11...Nbd7 12.Bb4 Qg2–+) 12.Qc8+= Ke7 13.Qh8 Qg2 14.Ke2 Ne4 15.Be1 Qh1 16.Nf3 (16.Qh7 Ng5 (worse is 16...Qg1 17.Qe4 Nd7 18.Nc3+=; 16...Bh2? 17.Bb4 Kf6 18.Qh4 Ng5 19.Nd2+–) 17.Qh4 Qg1+=) 16...a3?? (better is 16...Nf6+/–) 17.Qc8+– (17.Qg7?! Nd7+/–; 17.Qh7? Qf3!? 18.Kf3 Ng5 19.Kg2 Nh7–+) 17...Qg2 (17...Ra7 18.b6 Ra6 19.Qb7 Ke8+–) 18.Qb7 Kf6 (18...Kd8 19.Qa8 Ng5 20.Ba5 Ke8 21.Nbd2 Nf3 22.Nf3+–) 19.Qa8 Qg4 (19...Ng5 20.Ba5 Nf3 21.Bd8 Be7 22.Be7 Ke7 23.Qf3+–) 20.Na3 Bh2 (20...Qf5 21.Rc1 Ba3 22.Qb8+–) 21.Nc4 Bg1 (21...Kg6+–) 22.Qb8 (better is 22.Nce5 Qf5 23.Qb8+–) 22...h5 23.Nce5 Qh3 24.Qd8 Kf5 25.Nh4 Qh4 26.Qh4 (26.Qh4 Bh2 27.Qh2 Nc3 28.Bc3 Kf6 29.Qf4 Ke7 30.Qf7 Kd6 31.Qd7) 1–0. Fournier,Frederic (2105) – condevict (1930), Active, 2002.

4.d4 Bd7 5.e3= e6 (5...Bg4 6.Nf3=) 6.c4 (6.Nf3 c6=) 6...b6 (6...c6 7.Nf3=) 7.Nc3 (7.Nf3 Bb4 8.Nc3 Ne4=) 7...Bb4 (7...c6 8.Nf3=) 8.Bd3 (8.a3 Bd6=) 8...0–0 (8...dc4 9.Bc4 c6 10.bc6 Bc6 11.Nf3=) 9.Nge2 (9.cd5 Nd5 10.Qc2 h6=) 9...c6 (9...dc4 10.Bc4 c6 11.0–0=) 10.0–0 (10.cd5 Nd5 11.0–0 Qh4=) 10...Qe8 (10...dc4 11.Bc4 cb5 12.Bb5 Bb5 13.Nb5=) 11.bc6 (11.cd5 Nd5 12.bc6 Nc6 13.Nd5 ed5+=) 11...Bc6 (11...Nc6 12.cd5 ed5 13.Rc1+=) 12.cd5 Nd5 (12...ed5 13.a3 Bd6 14.Nf4+=) 13.Nd5+/– Bd5 14.Nf4 Bb7 (14...Bc6 15.Qg4 f5 16.Qg3+/–) 15.Qc2+/– g6 (15...h6 16.Qc7 Ba6 17.a3+/– (worse is 17.Qb6 g5+=)) 16.Bb5?? (better is 16.Qc7 Ba6 17.a3 (worse is 17.Qb6 g5+=) 17...Bd3 18.Nd3+/–) 16…Qb5–+ (16...Qb5 17.Qc7 Be4–+) 0–1. Deneuville,Christian – Wartig,Wolfgang, corr SOK–97–123, 1997.

4.d4 g6 5.e3 Bg7 6.a4 Nbd7 7.Nd2 0–0 8.c4 b6 9.Qc2 dc4 10.Bc4 Bb7 11.f3 Ng4 12.Nf1 Nh6 13.h4 Nf6 14.Nh3 e6 15.Nf4 Re8 16.Ng3 Rc8 17.Qb3 Nd5=+ 18.Bd5 ed5 19.Kf2 c5 20.dc5= Rc5 21.Bg7 Kg7 22.h5 g5 23.Nfe2 Qf6–/+ 24.Rhc1 Ng4 25.Kg1 Ne3 26.Qd3 Qe5 27.Kf2 Rc4 28.h6 Kh6 29.Rc4 dc4?? 30.Rh1+– Kg7 31.Qh7 Kf8 32.Qh6 Ke7 33.Qb6 Ng4 34.fg4 Qd5 35.Nf5 Kd7 36.Qd4 Kc7 37.Qd5 Bd5 38.Nc3 Ba8 39.Ne3 Kd6 40.Rh6 Kc5 41.b6 Re6 42.Re6 fe6 43.Nb5 Be4 44.Nc4! 1–0. Roczniak,Jan – Szlapak,E, corr Poland, 1984.

4.e3 b6 5.Nf3 Nbd7 6.c4 dc4 (6...Bb7 7.Nc3=) 7.Bc4+= Bb7 8.0–0 e6 9.d3 Bd6 10.Nbd2 e5 (10...0–0 11.Rc1=) 11.Qc2 (11.Rc1 0–0+=) 11...0–0 12.Rac1 (12.d4 Qe7+=) 12...Re8 (12...Qe7 13.Rfd1+=) 13.Ng5 (13.Rfd1 Qe7+=) 13...Rf8 (13...Bd5 14.Nde4 Bc4 15.Qc4+=) 14.a4 (14.Rfd1 a4+=) 14...Qe7 15.Nge4 (15.Nde4 Rac8+=) 15...Ne4 16.Ne4 Be4 (16...Rac8 17.f4+=) 17.de4= Nf6 (17...Rad8 18.Bd5+=) 18.Rcd1 Rad8 19.f3 (19.Bc3 Bb4 20.Bb4 Qb4+=) 19...Nd7 (19...Rd7 20.Rd3+=) 20.Rd5 Nf6 21.Rd3 Bc5 22.Rfd1 Rd6 23.Kf1 (23.Qe2 Rfd8+=) 23...Rfd8 24.Rd6 (24.Qc3 Rd3 25.Rd3 Nd7+=) 24...Rd6 (24...cd6 25.Qd3+=) 25.Rd6 Qd6 26.Qd3 Kf8 (26...Nd7 27.Qb3 Qg6 28.Kg1+=) 27.Qd6 (27.Qb3 Qe7+=) 27...cd6 (27...Bd6 28.Ke2=) 28.Ke2+= Ne8 (28...Bb4 29.Bd3+=) 29.Kd3 (29.f4 Nf6 30.Kf3 Nd7+=) 29...h6 (29...Nf6 30.Bd5+=) 30.f4 ef4 (30...Nf6 31.h3+=) 31.ef4+/– f6 (31...Nc7 32.f5+/–) 32.Bc3 Ke7 33.g3 g5 34.Ke2 Ng7 35.f5 Nh5 36.Kf3 Ng7 37.Bd5 h5 38.h3 Ba3 39.Bd4 Bc5 40.Bb2 Ne8 41.Bb7 Nc7 42.Bc6 Kf8?? 43.Bf6+– g4 44.hg4 hg4 45.Kg4 Kf7 46.Bd8 (46.Bd8 Ne8 47.Kf4+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.Nf3 a4 5.e3 e6 6.a3 Bd6 7.c4 dc4 8.Bc4 Nbd7 9.Nc3 Nb6 10.Be2 0–0 11.0–0 Qe7 12.d4+= Rd8 13.Qc2 Bd7 14.e4 e5? 15.de5+– Be5 16.Ne5 Qe5 17.Nd5 Qe4?? 18.Nf6 gf6 19.Qe4 Re8 20.Qf3 Rad8 21.Qf6 (21...Re5 22.Bh5 Rf8 23.Be5 Bb5 24.Qg7#) 1–0. Fredek (2090) – Mihajlo (1710), Freundschaftspartie, 5m + 0s, 2005.

4.Nf3 b6 5.e3 Bb7 6.c4 e6 7.Be2 Bd6 (7...dc4 8.Bc4 Bd6 9.Nc3=) 8.0–0 0–0 9.d4 Nbd7 10.a4 (10.Ne5 dc4 11.Bc4 Qe8=) 10...c6 (10...Rc8 11.Nbd2=) 11.Ne5 (11.bc6 Bc6 12.Ba3 Qc7=) 11...c5 (11...cb5 12.cb5 Rc8 13.Nd2=) 12.Nd2 (12.Nd7 Nd7 13.cd5 Bd5=) 12...cd4 13.ed4 (13.Nd7 Nd7 14.Bd4 Qc7=) 13...Rc8 14.Rc1 (14.Bf3 Ne4=). Makowski – Kozdra, Gdansk Poland, 1981.

4.Nf3 c5 5.e3 h6 6.c4 Bf5 7.d4 e6 8.Bd3 Bd3 9.Qd3 Nbd7 10.Nbd2 Be7 11.0–0 0–0 12.Rfc1 b6 13.a4 Rc8= 14.Rc2 Rc7 15.Rac1 Qa8 16.Ba3 Rfc8 17.Nb3 dc4 18.Rc4 Qe4 19.Qe4 Ne4 20.dc5 Nec5 21.Nc5 Bc5 22.Bc5 Rc5 23.Nd2 Kf8 24.Kf1 Ke7 25.Ke2 f5 26.f3 Kd6 27.Rd4 Ke7 28.Rdc4 g5 29.g3 e5 30.e4 fe4 31.fe4 Kd6 32.Kd3 Ke6 33.Nb3 Rc4 34.Rc4 Rc4 35.Kc4 Kd6 36.g4 Nf6–/+ 37.Nd2 Ng4 38.Kd3 Nh2 39.Nc4–/+ Kc5 40.Ne5=+ Kb4 41.Nf7? Ka4–+ 42.Kc4? g4 43.e5 g3 44.e6 g2 45.e7 g1Q 46.e8Q h5 47.Qe2 Qc5 48.Kd3 Qb5 49.Kd2 Qe2 50.Ke2 Kb3 51.Nd6 a4 52.Nb5 a3 53.Na3 Ka3 54.Kf2 b5 55.Kg2 Ng4 56.Kg3 b4 57.Kh4 b3 58.Kh5 Ne3 59.Kg5 b2 60.Kf4 Nc4 (61.Kg4 b1Q 62.Kf4 Qd3 63.Kg5 Kb4 64.Kf4 Ne3 65.Kf3 Qd4 66.Ke2 Kc4 67.Kf3 Kd3 68.Kg3 Qg4 69.Kf2 Qg2 70.Ke1 Qe2#) 0–1. Jeschke,Holger – Zielke,Bernd, Schleswig Holstein–ch, 1993.

4.Nf3 c6 5.a4 Nbd7 6.e3 e6 7.c4 Bb4 8.Be2 0–0 9.0–0 Nb6 10.d3 h6 11.Qc2 Nbd7 12.Nbd2 Qc7 13.d4 cb5 14.ab5 b6 15.Rfc1 Bb7 16.Qb3 Qd6 17.Rc2 Rac8 18.Rac1 Rfd8 19.Qa4 Ne4 20.Ne4 de4 21.Nd2 Qe7 22.Nb3 Bd6 23.c5 bc5 24.Qa5 Ra8 25.Qc3 cd4 26.Nd4 Ne5 27.Nc6 Bc6 28.bc6 Bc7 29.h3 f6 30.Ra1 ½–½. AlexSh – Caissa, playchess.de, 2004.

4.Nf3 Nbd7 5.e3 e6 (--> 3.Nf3 e6 4.Bb2 d5 5.e3 Nbd7).

4.Nf3 e6 5.d3 Nbd7 6.Nbd2 Be7 7.g3 0–0 8.Bg2 Nb6 9.a4 Nfd7 10.0–0 f5 11.c4 Bf6 12.Bf6 Qf6 13.Qc2 Qe7 14.Rfc1 dc4 15.Nc4 Nd5 16.Ne3 N7f6 17.Nd5 Nd5 18.Ne5 Qd6 19.Nc4 Nb4 20.Qc3 Qe7 21.Ne5 c6 22.bc6 bc6 23.Nc6 Nc6 24.Bc6 Bb7 25.Bb7 Qb7 26.Qe5 Qd5 27.Qd5 ed5 28.Rc5 Rfe8 29.Kf1 Red8 30.Rb1 Ra6 31.Rbb5 Rh6 32.h4 f4 33.Rd5 Rf8 34.Rf5 1–0. Valenta,Vit – Koudela,J, Valtice, 1992.

4.Nf3 g6 5.e3 Bg7 6.c4 0–0 7.Nc3 c5 8.bc6 dc4 (8...Nc6!? 9.Nd5 Nd5 10.Bg7 Ne3 11.fe3 Kg7+=) 9.cb7+/– Bb7 10.Bc4 Nc6 11.0–0 e6 12.Rb1 Ba6 13.Ba6 Ra6 14.Qe2 Rb6 15.d4 Nb4 16.a3 Nbd5 17.Ba1 (17.Na4 Rb8+–) 17...Nc3 18.Bc3 Nd5?? (better is 18...Rc6 19.Rfc1 Ne4+–) 19.Ba5+– Qd6 20.Rb6 Nb6 21.Bb4 Qc6 22.Bf8 Bf8 23.Ne5 Qa4 24.Qf3 Qa7 25.h3 Bd6 26.Qc6 (26.Qc6 Be5 27.de5+–) 1–0. Humeau,Cyril (2095) – David,Pierre Yves (1920), Pic d'Anie op 1st, 2004.

4.Bf6 ef6+= 5.e3 Be6 6.a4 (6.Nc3 Nd7+=) 6...c5 (6...Nd7 7.Nc3–/+) 7.Nf3 Nd7 8.Be2 Bd6 9.0–0 0–0 10.Nc3 Nb6 11.d4 (11.g3!?+=) 11...Qc7–/+ 12.Qd2 (12.h3 cd4 13.Qd4 Rfc8–+) 12...cd4–+ 13.ed4?? (better is 13.Nd1–+) 13…Bb4 0–1. mic (2195) – ruter (2475), net–chess.com, 2009.

4.d4 Bg4

5.Nf3 =+.

5.h3 Bf5 6.e3 e6 7.Nd2 Ne4 8.Ne4 Be4 9.Nf3 Bb4 10.c3 Bd6 11.Nd2 Bf5 12.c4 Bb4 13.Rc1 c6 14.a3 Be7 15.Qf3 0–0 16.cd5 cd5 17.e4 Bg6 18.Be2 Bg5 19.ed5 ed5 20.Rc5 Bd2 21.Kd2 Be4 22.Qg3 Re8 23.Rc7 b6 24.Rhc1 Nd7 25.Bh5 Re7 26.Qd6 Qe8 27.Re1 g6 28.Bg4 f5 29.Bd1 Rf7 30.Bb3 Nf6 31.Rf7 Qf7 32.f3 a4 33.Ba2 Rc8 34.fe4 fe4 35.Rf1 Kg7 36.Rf6! Qf6 37.Qd7 Kh6 38.Qc8 Qf2 39.Kc3 e3 40.Bc1 Qa2 41.Be3 Kg7 42.Qb7 Kg8 43.Qa8 Kf7 44.Qa4 Qg2 45.Qa7 Kg8 46.Qb6 Qh3 47.Qd8 Kg7 48.Qe7 Kg8 49.b6 Qh1 50.b7 Qe1 51.Kb3 Qb1 52.Ka4 Qc2 53.Ka5 1–0. Glowatzky,Tihomir – Wartig,Wolfgang, email SOK–99–134, 1999.

4.e3 a4

5.c4 e6 6.a3 Bd6 (6...Nbd7 7.d4=) 7.Nf3 (7.d4 c5 8.dc5 Bc5 9.cd5 ed5+=) 7...Nbd7 8.d4 c5 9.bc6 bc6 10.Nbd2 c5 11.cd5 (11.Bd3 0–0=) 11...ed5 (worse is 11...Nd5 12.Ne4 Bc7 13.Bc4 Ba5 14.Kf1+=) 12.dc5 Nc5 13.Bb5 Attacks the isolani on a4 13...Bd7 14.Bd7 Qd7 (14...Ncd7 15.Nc4 Bc5 16.Nce5=) 15.Bf6 Nd3 16.Ke2 gf6 17.Nd4 (worse is 17.Kd3 Qb5 18.Nc4 dc4 19.Kc3 Qa5 20.Kc2 Be5 21.Ne5 Rd8+= (worse is 21...fe5 22.Qd6 Rd8 23.Qb4+=)) 17...Ne5 (17...Nc5 18.Qc2=) 18.f4 Nc6 19.N2f3 0–0 20.Nc6 Qc6 21.Nd4 Qd7 22.Qd3 Qg4 (22...Rfe8 23.Kf2=) 23.Kf2+= Rfb8 24.Rhb1 (24.Ra2 Qd7+=) 24...Bc5= 25.h3 Qg6 (25...Qd7 26.Qc3 Qd6 27.Rb8 Rb8 28.Ra2=) 26.Nf5 Re8 27.Kf1 (27.Qd5?? Rad8 28.Rd1 Rd5 29.Rd5 Bb6–+) 27...Rac8 (27...Rad8!?+=) 28.Rc1+/– Bf8 29.g4 Rc1 (29...h5!? 30.Rc8 Rc8+/–) 30.Rc1+– h5 31.Kf2 Rb8 (31...hg4?? 32.Rg1 Ba3 33.Rg4 (33.Qa3?! Qf5 34.Rg4 Kh7=) 33...Qg4 34.Nh6 Kg7 35.Ng4+–) 32.Kg3 Qh7 (32...Kh8 33.Rc7+–) 33.Qc3 Re8 (33...d4 34.Qd4 (34.Nd4?! hg4 35.hg4 Qe4+/–; 34.ed4 hg4 35.hg4 Rb3–/+) 34...Ba3 35.Qf6+–) 34.Qc6 Rb8 35.Qf6 h4 36.Kf3 Qg6 37.Qh4 (37.Qe5 Qb6 38.g5 d4 39.Qd4 Qe6+–) 37...Ba3 (37...d4 38.ed4 Rb3 39.Kg2+–) 38.Ra1 Bf8 (38...Bc5 39.Ra4 Qh7 40.Qg5 Qg6 41.Ra5 Qg5 42.fg5+–) 39.Ra4 Qe6 (39...Qb6 40.Rd4 Qd8 41.Qd8 Rd8 42.h4+–) 40.Ra7 Re8 41.Qg5 Kh8 42.Kg2 Qe4 (42...Kh7 43.h4+–) 43.Kh2 Qe6 44.Ra5 Qc6 (44...Qg6 45.Rd5 Kg8 46.Kg3+–) 45.Rd5! (45.Rd5 Qg6 46.Qh4 Qh7 47.Qf6 Kg8 48.Rd8 Rd8 49.Qg5 Qg6 50.Qd8+–) 1–0. marekt (2125) – manijer_wmp3 (2165), gameknot.com, 2015.

5.Nf3 e6 6.a3 Nbd7 7.c4 dc4 8.Bc4 Nb6 9.Be2 Bd6 10.Qc2 0–0 (10...Bd7 11.e4 Nh5 12.g3=) 11.e4 Nh5 12.e5 Be7 13.g3 f6 14.Ng1 g6 15.f4 Bd7 16.Nf3 c6 17.ef6 Bf6 18.Ne5 cb5 19.Nc3 (19.Bh5!? gh5 20.Qe4+=) 19...Be5+= 20.fe5 Nc4 21.Ne4 Nb2 22.Qb2 Bc6 23.d3 Be4 24.de4 Nf4 (24...Nf4 25.gf4 Qh4 26.Kd1 Qf2–+) 0–1. Sternik,Ryszard (1935) – Pilz,Erhard (2125), Tiger Temat, 2005.

4.e3 c5

5.c4 d4 6.Nf3 de3 7.fe3 b6 8.Be2 Bb7 9.0–0 e6 10.Qc2 (10.Ng5 Nbd7+=) 10...Bd6= 11.h3 Bf3 (11...Nbd7!?=) 12.Bf3+= (12.gf3?! Rg8=) 12...Ra7 13.Bf6 gf6 14.Nc3 Bc7 15.Ne4 (15.d3 Be5+=) 15...f5 (15...Be5!? 16.Rad1 f5+=) 16.Qc3+/– Rf8 17.Nf6 Ke7 18.Nh7 Qd6? (better is 18...Rh8 19.Qf6 Kd6+/–) 19.Qf6 Ke8 20.Nf8 (20.Qg7 Qh2 21.Kf2 Bd6+–) 20...Kf8 (20...Qh2 21.Kf2 Qg3 22.Ke2+–) 21.Qh6 Ke7 22.Qf4! Qf4 23.ef4 Bf4 24.d3 Be3 25.Kh1 Nd7 26.Bc6 (26.Rae1 Bd4 27.h4+/–) 26...Nf6? (better is 26...Ne5!? 27.Rad1 f4+/–) 27.Rae1 f4 28.Rf3 e5 29.Ree3 fe3 30.Re3 Kd6 31.Rf3 Ke6 32.g4 Rc7 33.g5 Nh5 34.Bd5 Kd6 35.Rf7 Rf7 36.Bf7 Nf4 37.g6 Ke7+= 38.h4 Nd3 39.h5+– Kf6 40.h6 Nf4 41.h7 Kg7 42.Kg1 e4 43.Kf2 Nh3 44.Ke3 Ng5 45.a4 Kh8 46.Kf4 Kg7 47.Kg5 e3 48.h8Q! Kh8 49.Kh6 e2 50.g7 1–0. orangutanb4 (1960) – violin (1975), kurnik, 2011.

5.Nf3 Nbd7 6.c4 Qc7 7.Qc2 e5 (7...e6 8.Be2=) 8.cd5+= Nd5 9.Nc3 Nb4 10.Qb3 (10.Qb1 Qd6 11.e4+/–) 10...b6?? (10...c4 A) worse is 11.Bc4 Nc5 12.b6 Qe7 (12...Nb3?! 13.bc7 Na1 14.Ba1=) 13.Bf7 Kd8+=; B) 11.Qc4 Nc2 12.Kd1 Qc4 13.Bc4 Na1 14.Ba1=) 11.Nd5 (11.Bc4 f5 12.a3+=) 11...Nd5+= 12.Qd5 Bb7 13.Qb3 Bf3 14.gf3 Be7 15.Bh3 0–0 16.Rg1 Bf6 17.Bf5 g6 18.Be4 Rad8 19.0–0–0 c4 20.Qc2 Bg7 21.h4 f5 22.Bc6+= Nb8 23.Qc4 Kh8 24.h5 Nc6 25.Qc6 Qe7 26.Kb1+/– Rd6? 27.Qc3?? gh5? 28.Rg7! Qg7 29.Qe5+– Qe5 30.Be5 Rff6 31.Rg1 Rde6 32.f4 Re5 33.fe5 Rg6 34.Rh1 Rg2 35.Kc2 Rf2 36.Rh5 Kg7 37.e6 Kf6 38.Rh7 Ke6 39.Rh6 Kd5 40.Rb6 Kc5 41.Rb8 f4 42.Kc3 fe3+/– 43.de3 Ra2 44.b6 Ra3 45.Kd2 Rb3 46.b7 Kc6 47.Ra8 Kb7 48.Ra5 Kb6 49.Rf5 Kc6 50.Ke2 Kd6 51.Kf3 Ke6 52.Ra5 Rb1 53.Ke4 Rb4 54.Kf3 Rb2 55.Kf4+/– Rf2 56.Ke4 Kd6 57.Ra6+– Kd7 58.Kd4 Rd2 59.Ke5 Rb2 60.e4 Ke8 61.Ra7 Rb8 62.Kf6 Rb6 63.Kf5 Rb8 64.e5 Kf8? 65.Kf6 Ke8 66.Rh7 Rb1 67.Rh8 Kd7 68.e6 Kc7 69.Rh7 Kd6? 70.Rd7 Kc6 71.Rd2 Rf1 72.Ke7 Re1 73.Kf7 1–0. orangutanb4 (1975) – violin (1960), kurnik, 2011.

5.Nf3 Bg4 6.h3 Bh5 7.c4 e6 8.Be2 Nbd7 9.Nc3 Nb6 10.Ne5 Be2=+ 11.Qe2 Bd6 12.f4 Be5 13.fe5 Nc4 14.ef6 Nb2 15.0–0 Nc4 16.e4 Nb6 17.fg7 Rg8 18.Qg4 de4 +–. Schiffler – Hellbauer, Berlin, 1951.

4.e3 Nbd7

5.a4 Nc5 6.c4 dc4=+ 7.Nc3 Bg4 8.f3 Be6 9.h3 Qd6 10.f4 Nd3 11.Bd3 cd3 12.Nf3 h6 13.0–0 Bf5 14.Ne5 c5 15.Qf3=+ Rb8 16.Nc4 Qd8 17.b6 e6= 18.Nb5 Ne4 19.Nc7 Ke7 20.Rfd1 Bg6 21.Na5 Rg8 22.Nc4 Nd6 23.Ne5 Be4= 24.Qg3 f6 25.Ng6 Kf7 26.Nh4 g5 27.fg5 Rg5=+ 28.Qf2 Bg7 29.Bc3 Bc6 30.Qf4 c4 31.Rf1= Be4 32.Nf3+= Bf3 33.Rf3 Rc8 34.e4 Kg8? 35.Raf1 e5 36.Qe3 Qd7 37.Qc5 Kh7 38.Qd5 Rg8 39.a5 Bh8+= 40.R3f2?? Bg7 41.Bb4+– Bf8 42.g4?? f5?? 43.ef5 h5 44.Ne6 hg4 45.h4 Rh5 46.Ng5 Rgg5 47.hg5 g3 48.Rg2 Rg5 49.Bc3 Rf5 50.Rf5+– Qf5 51.Rg3 Kh6? 52.Qh1 Qh5 53.Rh3 Qh3 54.Qh3 Kg6 55.Qf3 Bg7 56.Kg2 Kg5 57.Bb4 Nf5 58.Qb7 Nh4 (58...Kf4 59.a6 Bf8 60.Bf8 Ne3 61.de3 Kg5 62.Qg7 Kf5 63.Qh7 Kf6 64.b7 e4 65.Qg7 Ke6 66.b8Q c3 67.Qbe5#) 1–0. NN – GrandMasterChess 80286, 1993.

5.a4 e5 6.c4 =+.

5.c4 dc4 6.Bc4= Nb6 7.Qb3 Nc4=+ 8.Qc4 b6 9.Nf3= Bb7 10.Nc3 e6 11.a4 Bd6 12.0–0–0? Rc8–/+ 13.e4 Bb4 14.e5 Nd5 15.Rhe1 c6–+ 16.Kb1 cb5 17.Qb5 Bc6 18.Qe2 0–0 19.Nd4 Be8 20.Ndb5 Nf4 21.Qe4 Nd3 22.Re2 Nb2 23.Kb2 Bc3 24.Nc3 Bc6 25.Qg4 Qe7 26.f3 Rfd8 27.h4 (27.Rb1 Qc5 28.Rc1 b5–+). Wartig,Wolfgang – Alegre Gonzalez,Manuel, corr ICCF, 1992.

5.d4 Nb6 6.Bd3 =.

5.d4 c5 6.dc5 Nc5 7.Bf6 (7.Nf3 Bg4=) 7...ef6 8.c4 (8.Nf3 Ne4=) 8...dc4 (8...Be6 9.cd5 Qd5 10.Qd5 Bd5 11.Nf3+=) 9.Qd8= Kd8 10.Bc4 Be6 11.Nd2 Kc7 (11...Rc8 12.Ngf3=) 12.a4 (12.Ngf3 Rc8=) 12...b6 (12...Bd6 13.Ngf3=) 13.Ngf3 Rd8 14.0–0 (14.Nd4 Bd6=) 14...h6 (14...Bd6 15.Rfd1=) 15.Rfc1 (15.Nd4 Bd6+=) 15...g5 (15...Kb7 16.Nd4=) 16.Be6 (16.Nd4 Kb7+=) 16...fe6= 17.Nd4 Kb7 18.Rc5?? (better is 18.N2b3 Nb3 19.Nb3=) 18...Bc5–+ (18...bc5?! 19.N4b3=) 19.N2b3 Bd4 20.Nd4 e5 21.Nc6 Rd6 22.Kf1 Rh7 23.Ke2 Rhd7 24.Ra2 Rd1 25.f4 e4 26.Nd4 gf4?? 27.Kd1= fe3 28.Ke2 Rd4 29.Ke3 Rc4 30.Kf4 (30.Kf4 Kc7 31.Kf5–/+; 30.g4!?=). Trkn – marco_amaral, itsyourturn.com, 2001.

5.Nf3 Nb6 6.a4 (6.Be2 e6=) 6...Bf5 (6...Bg4 7.h3 Bh5 8.Bd3=) 7.d3 (7.Be2 e6=) 7...e6 8.Nbd2 (8.Be2 Bd6=) 8...Nfd7 9.h3 (9.Ra2 Nc5=) 9…Nc5+= (9...Nc5 10.Bd4 Nca4+=). de Visser,Arno – van Rooijen,Peter, corr or01–004, 2001.

5.Nf3 Ne4 =.

5.Nf3 e6 6.Be2 =.

5.f4 e6 6.Nf3 Be7 7.Be2 0–0 8.0–0 a4 =.

5.f4 e6 6.Nf3 Be7 7.Be2 0–0 8.0–0 c6 9.c4 cb5 10.cb5 Ne4 11.d3 Bf6 12.Qc2 Bb2 13.Qb2 Qf6 14.Ne5 Nec5 15.Qd4 Qe7 16.Nd2 Ne5 17.fe5 b6 18.Rf3 f5 19.ef6 Rf6 20.Raf1 Rf3 21.Nf3 Bd7 22.Ne5 Rf8 23.Rf8+= Qf8 24.Bg4 Bb5=+ 25.Be6 Ne6–/+ 26.Qd5 Qe8 27.Qd6 Nd8 28.d4 Nf7–+ 29.Qd5 Kf8 30.Qf3 Qe6 31.Qf2 g6 32.e4 Kg7 33.Nf7 Qf7 34.e5 Qf2 35.Kf2 Bc4 36.a3 Kf7 37.Ke3 Ke6 38.Kd2 a4 39.g4 g5 40.Kc3 b5 0–1. Mroz,Antoni – Solenik,Mikolaj, corr Poland, 1984.

5.f4 e6 6.Nf3 Be7 7.Be2 0–0 8.d3 c6=+ 9.bc6 bc6 10.h3 Ba6 11.Nbd2 Rb8 12.Rb1 a4 13.0–0 Qa5 14.Nd4 Qc7 15.Qe1 c5 16.N4f3 c4 17.dc4= dc4 18.Be5? Ne5–+ 19.Ne5 Bb4 20.Qc1? c3 21.Ndc4 Ne4 22.Bd3–/+ Nd2 23.Rb4 Rb4 24.Nd2 cd2 25.Qd2 Bd3 26.cd3 Rfb8 27.Nc4 Rb1 28.Qc2 Rf1 29.Kf1 Qc6 30.Qd1 h6 31.Kf2 a3 32.Qe2 Qc5 33.g3 Rb1 34.Qd2?? Ra1 35.Qc2 Qd5 36.e4 Qc5 37.Kf3 Rf1 38.Kg4 h5 39.Kh4 Qe7 40.Kh5 g6 (41.Kh6 f6 42.Kg6 Qf7 43.Kh6 Qh7#) 0–1. Larsen,A – Wibe,Terje, Hamar, 1976.

5.Nf3 Nc5

6.c4.

6.Be2 Bf5 =.

6.Bf6?! ef6

7.Nc3 Be6 =.

7.c4 dc4 8.Bc4 Nd3 9.Bd3 Qd3 10.Nc3 =+.

7.c4 Be6 8.d4!? Ne4 9.c5 (9.Nbd2? Bb4) 9...b6 10.c6 Bg4! 11.a3 unclear.

7.c4 Be6 8.cd5= Qd5 9.Nc3 (9.Nd4 Ne4=) 9...Nd3+= 10.Bd3 Qd3 11.Qa4 (11.Nd4 Bd6+=) 11...Bb4 12.Rc1 Bc4 13.Nd4 0–0–0 14.Qd1?? (14.Kd1 Bd5 15.f3 Bc3 16.Rc3 Qb1 17.Rc1 Qa2 18.Qa2 Ba2 19.b6=) 14...Rd4–+ 15.f3 (15.Qc2 Qc2 16.Rc2 Rg4–+) 15...Re8 16.e4 (16.Qc2 Re3! 17.Kd1 Bc3 18.Qd3 Red3–+) 16...Rde4! 17.fe4 Re4! 18.Ne4 (18.Qe2 Re2 19.Kf1 Qf5 20.Kg1 Qf2) 18...Qe3 A double attack (18...Qe3 19.Qe2 Qe2) 0–1. Stummerer,Alfred – Algaba,Pedro, corr SOK–90–66, 1990.

7.d3 (idea Nbd2 idea c4).

4.e3 e6

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

5.Nf3 (--> 3.Nf3 e6 4.Bb2 d5 5.e3).

4.e3 Bf5

5.Bd3 Bd3=+ 6.cd3 Nbd7 (6...e6 7.Nf3=) 7.Nf3= e6 8.0–0 Bd6 9.a4 (9.Nc3 0–0=+) 9...0–0 10.Nc3 c6 11.bc6 bc6 12.Qc2 Qc7 13.Ne2 Rab8=+ 14.Rac1 c5 15.Ng3 Rfd8 16.Bf6 Nf6–/+ 17.d4 c4 18.Rb1 h6 19.Rb5 Rb5 20.ab5 Rb8 21.Rb1–/+ Bb4 22.Ra1 Rb5–/+ 23.Ne5 Bd6–+ 24.f4 Qb6 25.Qa4 Rb2 26.Qa5 Qa5 27.Ra5 Rd2 28.Ra8 Bf8 29.Rc8 g5 30.fg5 hg5–+ 31.h3 Rc2 32.Nf1 Rc1 33.g4 Rc2 34.Rb8 Nh7 35.Ng3 Ra2 36.Rc8 f6 37.Nf3 Kf7 38.Rc7 Be7 39.Kf1 Nf8 40.Nh5 Ng6 41.Ke1 e5 42.Rb7 ed4 43.ed4 Ra3 44.Ke2–/+ Rd3 45.Rb5 Nh4 46.Nh4 gh4 47.Nf4 Rd4 48.Nd5 Rd3 49.Ne3 Ra3 50.Rh5=+ Ra2 51.Kf3 c3 52.Rh8 Ke6–/+ 53.Rc8 Rh2 54.Rc3 Rh3 55.Kf4 Bd6 56.Ke4 Rg3 57.Rc6 Kd7 58.Ra6? Bc5 59.Nf5 Rg4 60.Kd5 Rf4 61.Rf6 Bf2 62.Ke5 Rf3 63.Rf7 Kd8 64.Rf8 Kc7–/+ 65.Rf7 Kb6 66.Ke4 Rc3 67.Ne7 Re3–/+ 68.Kf4 Rd3 69.Ke4 Rd4 70.Kf3 Bg3 71.Nf5 Rf4 72.Kg2 Bf2 73.Kh3 Kc5 74.Rf8 Kb4 75.Rf7 Kc3 76.Rc7 Kd3 77.Rd7 Ke2 78.Re7 Kf3 79.Ng7 Rf6 80.Rd7 Ke4 81.Re7–/+ Kd5 82.Nh5 Rf5 83.Kg4 Rf8 84.Nf4 Kd6 85.Rh7 Rg8 86.Kf3 Bc5 87.Rh4 ½–½. Mephisto Mondial12 – GrandMasterChess, 1994.

5.d4 e6 6.Nd2 Be7 (6...a4 7.Be2+=) 7.Ngf3 0–0 8.Be2 c5 (8...Nbd7 9.0–0=) 9.0–0 (9.dc5 Bc5 10.0–0 a4=) 9...a4 (9...c4 10.Nh4=) 10.c4 (10.dc5 Bc5 11.Bd4 Nbd7=) 10...dc4 (10...a3 11.Bc3=) 11.Nc4 (11.dc5 Bc5 12.Rc1 c3 13.Rc3 Nbd7=) 11...Nbd7 12.Nce5 (12.Rc1 Be4=) 12...a3+= 13.Bc3 Ne4 14.Bd2 (14.Rc1 Ne5 15.Ne5 Rc8=) 14...Ndf6 (14...Ne5 15.de5 Qd5–/+) 15.Nh4? (15.Rc1 Rc8+=) 15...Bg6?? (15...Nd2 16.Nf5 Nf1 (16...ef5?! 17.Qd2 Ne4 18.Qd3=) 17.Ne7 Qe7 18.Qf1 cd4 19.ed4 Rfd8–+) 16.Nhg6= hg6 17.Bf3 (17.f3!? Nd2 18.Qd2 cd4 19.ed4=) 17...cd4+= 18.Be4 (18.ed4 Qd4 19.Bf4 Rfd8–/+) 18…Ne4–/+ 0–1. gtate (1900) – cmarcolino (2480), net–chess.com, 2004.

5.Ne2 e6 6.Ng3 Bg6 7.Nc3 Bd6 8.Nce2 Nbd7 9.h4 h6 10.Nf4 Bh7 11.Ngh5 Rg8 12.c4 dc4 13.Bc4 Qe7 14.Rc1 Ne5 15.Nf6 gf6 16.Be2 b6 17.d4 0–0–0 18.Kf1 Nd7 19.Bf3 Kb8 20.Qb3+= Bf5 21.Nd5! Qf8 22.Qc4 Nc5? 23.dc5+– Bc5 24.Nf4 e5 25.Nd5 Qd6 26.e4 Bg4 27.Bg4 Rg4 28.Qe2 Rdg8 29.g3 f5 30.Rd1 Re4 31.Qf3 Qe6 32.Kg2 Reg4 33.Ne3 Be3 34.Qe3 e4 35.Rd4 Qa2 36.Qc3 Qe6?? 37.Rc1+– Rc8 38.Rd8!! Qe7 39.Rc8 Kc8 40.Qc6 Rg6 41.Qa8 Kd7 42.Rd1 Rd6 43.Ba3 e3 44.Rd6 cd6 45.Qb7 Ke6 46.Qe7 Ke7 47.fe3 Ke6 48.Kf3 Kd5 49.Kf4 Kc4 50.Bd6 Kb5 51.Kf5 1–0. Skoeld – Joffe, 1959.

5.Nf3 Nbd7 6.Be2 e6 7.0–0 Bd6 8.d4 h6 9.c4 dc4 10.Bc4 0–0 11.Nc3 Nb6 12.Bd3 Bd3 13.Qd3 Nbd5 14.e4 Nc3 15.Bc3 Bb4 16.Bb2 Re8 17.Rac1 Rc8 18.Rfd1 Nh7 19.a3 Be7 20.Ne5 Bf6 21.Nc4 Bg5 22.Rc2 Nf8 (better is 22...c6!? 23.Bc3 b6+=) 23.Na5+– c5? (better is 23...Rb8+–) 24.Nb7 (24.Nb7 Qc7 25.Nc5+–) 1–0. Lannoy,Jean_Claude Albert – Erillinen,Alp, CL5–2009.18.01, 2009.

5.Nf3 Nbd7 6.Be2 e6 7.Nh4 Bg6 8.0–0 Bd6 9.f4 Ne4 10.Qe1 (10.Ng6 hg6 11.Bg7 Rh7=) 10...0–0 (10...Nef6 11.f5 ef5 12.Nf5 Bf5 13.Rf5=) 11.d3+= Nef6 12.g4 (12.Ng6 fg6 13.Qg3 Qe7=) 12...c6 13.g5 Ne8 14.bc6 bc6 15.Ng6 hg6 16.Qh4 Qb8 17.Bc1 f5 (17...Qc7 18.Rf3=) 18.gf6+= gf6 19.Rf3 Ng7 20.Rg3 g5 21.Qh6 Kf7 22.Qh7 Rg8 23.Rg2 gf4 24.ef4 Bf4 25.Bh5 Kf8 26.Qg6 Bh2 27.Kf1 Ke7 28.Qf7 Kd6 29.Rg7 Rg7 30.Qg7 Be5 31.c3 f5 32.Qg5 Qb5 33.Be2 Rh8 34.Qg1 Bh2 35.Qf2 Be5 36.Qf3 Qb8 37.d4+– Bh2 38.Nd2 Qg8 39.Qg2 Bg3 40.Nf3 f4 41.c4 Qh7 42.Ba3 Kc7 43.Rd1 Nf6 44.Bc1 Ne4 45.Bd2 Nd2 46.Rd2 Qb1 47.Bd1 Kd8 48.c5 Kd7 49.Kg1 a4 50.Rd3 Rh2 51.Qf1 Qb2 52.Ba4+/– Rf2 53.Qh3+– Qb1 54.Rd1 Qe4 55.Re1?? Rf3= 56.Bc6! (56…Kc7 57.Re4 Bf2 58.Kg2 Rh3 59.Bd5 (59.Kh3?! de4 60.Be4 Bd4=; < 59.Kf2 de4 60.Be4 Ra3–/+; 59.Rf4?! Rh4 60.Rf2 Kc6+=) 59...ed5 60.Re7 Kc6 61.Re6 (61.Kh3?! Bd4 62.Kg4 Be3+=) 61...Kc7 62.Kh3 (62.Kf2?! Rd3=) 62...Bd4 63.Kg4+–; 56.Re4 Bf2 57.Kg2 Rh3 58.Bc6 Kc6 59.Re6 Kc7 60.Kh3 Bd4+–) 1–0. Taulien,Hans_Juergen – Gross,Karl, remoteschach.de, 2002.

5.Nf3 e6 6.c4 dc4 7.Bc4 Bd6 8.0–0 0–0 9.d4 Nbd7 10.Ne5 Nb6 11.Be2 Rc8 12.Nd2 Ne4 13.Bf3 (better is 13.Ne4 Be4 14.f3=) 13...Nd2–/+ 14.Qd2 Be5 15.Qa5 Bd6 16.Bb7 Rb8 17.Bc6 Nc4 18.Qc3 Nb2 19.Qb2 Bh2! 20.Kh2 Qd6 21.Kg1 Qc6! 22.a4 Qb7 23.Rfc1 Rfd8 24.Qc3 Rbc8 25.f3 Rd6 26.e4 Bg6 27.Qc5 f5 28.a5 fe4 29.a6 Qa8 30.a7 Rdd8 31.b6 ef3 32.bc7 Rf8 33.Ra2? fg2–+ 34.Rg2 Qf3 35.Qc3 Qf4 36.Qc4 Qe3 37.Kh2 Rf3 38.Kh1 Rh3 39.Rh2 Be4 0–1. Jostov,Keylah – Krabbenbos,Jan, SC–2008–0–00024, 2009.

5.Nf3 e6 6.Be2 a4 7.Nh4 a3 8.Bd4 Bg6 9.Ng6 hg6 10.c4 (10…c5 11.Be5=) =. Behrmann,Klaus – Lockett,Karl, corr compuserve, 1998.

5.Nf3 e6 6.h3 Nbd7 7.c4 (7.Nc3 Bd6=) 7...c6 (7...Nc5 8.cd5 Nd5 9.a3+=) 8.a4 (8.Nd4 Bc5 9.Nf5 ef5=) 8...Bb4 9.Be2 Qe7 (9...cb5 10.cb5 0–0 11.Nc3+=) 10.0–0 e5 (10...0–0 11.Nc3=) 11.Nh4 (11.cd5 cd5 12.Nc3 0–0=) 11...Be6 12.Nf3 Bd6 (12...0–0 13.cd5 cd5 14.Ne5 Bh3 15.Nd7 Bd7 16.Bf3+=) 13.Qc2 (13.d4 ed4 14.Nd4 Rc8+= (14...dc4? 15.bc6 Ne5 16.Nb5+–)) 13...h6 (13...cb5!? 14.ab5 e4=) 14.d4+/– ed4 15.Nd4 c5 16.Nf5 (16.cd5!? Bd5 17.Nf5+/–) 16...Bf5+= 17.Qf5 Qe6 18.Qc2 Bc7 (better is 18...0–0!?+=) 19.Rd1+/– 0–0–0 20.cd5 Qd6? (20...Nd5!? 21.Qc4 N5f6+/–) 21.g3+– Rhe8 (21...Nd5 22.Bg4 (22.Bg7 Ne3 23.Rd6 Nc2 24.Rd7 Kd7 25.Bh8 Rh8=) 22...Kb8 23.Na3 Ne3 24.fe3 (24.Rd6?! Nc2 25.Rd7 Na1 26.Rf7 Rhe8+=) 24...Qg3 25.Kh1+=) 22.Qf5 (better is 22.Bf3!? Qe7+–) 22...Kb8 23.Bf3 Ne5 24.Bg2 Nc4 25.Bf6 gf6 (25...Qf6 26.Qf6 gf6 27.Rc1+–) 26.Nd2 Nd2 27.Rd2 Qe5 28.Qb1 Rg8 (better is 28...h5+–) 29.Qb2?? (better is 29.b6 Bd6 30.Qd1+–) 29...Qb2+= 30.Rb2 Be5 31.Rab1 Bb2 32.Rb2 b6 33.e4 (33.Kf1 Kc7+=) 33...Kc7+= 34.g4 Kd6 35.f4 h5 (35...c4 36.Kf2–/+) 36.Bf3 (36.gh5!? Rg3 37.Re2–/+) 36...hg4–/+ 37.hg4 Rh8 38.Kg2 Rh7 39.Kf2 Rh2 40.Bg2 Rdh8 41.Re2 R8h3 (41...c4!?–/+) 42.Kg1 Rg2 43.Kg2 (43.Rg2 Re3 Combination; 43.Kg2 Ra3 Combination) 43...Ra3 44.g5 fg5 (44...Ra4 45.gf6 Rd4 46.Kf3+–) 45.fg5 Ra4 46.e5 (46.Kg3 Rd4=) 46...Kd5 47.Kg3 (47.e6!? fe6 48.Kg3 Ra3 49.Kg2–/+) 47...Ke6 48.Re3?? (better is 48.Rf2 Ra3 49.Kg4–/+) 48...Rb4–+ 49.Rf3 Rb5 50.Rf6 Ke7 51.e6 (51.Kf4 a4 52.Ke4 a3–+) 51...fe6 52.Rf3 (52.Rf4 c4! 53.Rc4 Rg5 54.Kf4 Rc5–+) 52...c4 53.Kg4 (53.Kh4 Rf5 54.Rc3 Rc5–+) 53...Rf5! (53...Rf5 54.Rg3 a4–+) 0–1. birola (1660) – heaterhog (1890), gameknot.com, 2011.

5.Bf6 ef6 6.Nf3 Be7 7.Be2 0–0 8.0–0 Nd7 9.d4 Bd6 10.a4 (10.c4 dc4 11.Bc4 c5=) 10...Re8 11.c4 dc4 12.Bc4 Nb6 13.Nbd2 (13.Bd3 Qd7=) 13...Nc4 14.Nc4 Bb4 15.Qb3 Be4 16.Ne1 Qd5 (16...f5 17.Ne5 Bd5 18.Qc2=) 17.f3 Bf5 18.Nc2 Be6 19.Nb4 Qc4 20.Qc4 Bc4 21.Rfc1 Bb3 (21...Be6 22.Nd3 (< 22.Rc7 ab4 23.Rb7 Bd5–/+) 22...Re7 23.Rc3+/–) 22.Rc3+/– Be6 23.Nd3 (< 23.Rc7 ab4 24.Rb7 Reb8 25.Rb8 Rb8=+) 23...c6 24.bc6 bc6 25.Rc6 (25.Kf2 Ra6+/–) 25...Bd5 26.Rc5 Re3 27.Rd5 Rd3 28.Rb1 h6 29.Rbb5 Kh7 30.Kf2 Rd2 ½–½. Zimmer,Georg – Rosner,Dirk, corr, 1994.

5.c4 e6

6.a4 Nbd7 7.Nf3 Bb4 (7...Nc5 8.Ne5+=) 8.Be2 (8.cd5 ed5 9.Be2 0–0=) 8...Nc5+= 9.0–0 (9.cd5!? Qd5 10.0–0+=) 9...Nd3–/+ 10.Bd3 (10.Bd4 dc4 11.Ne5 Bc5 12.Bc5 Ne5=) 10...Bd3 11.Re1 dc4 12.Ne5 Qd5 13.Nd3 (13.Bd4 Nd7 14.Nd3 cd3–/+) 13...Qd3 (13...cd3!? 14.Nc3 Qg5–/+) 14.Qf3+= Ne4 The pressure on the backward pawn d2 grows 15.Bg7 Rg8 16.Be5 Rc8 (16...Qd5 17.Bc7 Rc8 18.Bf4+=) 17.Nc3= Nc5 (worse is 17...Nc3 18.dc3 (18.Bc3?! Rb8=) 18...Bc3 19.Qb7+/–; 17...Bc3?! 18.dc3 Qd5 19.Bg3 Nc3 20.e4=) 18.Qf4 (18.Bd4!? c6 19.Bc5 Bc5 20.Ne4=) 18...Qg6–/+ 19.Qf3 Nd3 (19...Qg4!? 20.Qg4 Rg4+=) 20.Qb7= Kd8 21.Bg3 Ne1 22.Re1 Qd3 23.Bh4 Be7 24.Bg3 Qd7 25.Qe4 .Qd3= 26.Qb7 Qd7 27.Qa6+= Bb4 28.Bh4 Ke8 29.Ne4+/– Rg6 30.Nf6 Rf6 31.Bf6 Rb8 32.Qa7 Rc8+/– 33.Qb7 c6+= 34.Qa6 cb5+= 35.ab5 Rb8 36.b6 Qd2 37.Ra1 Attacking the isolated pawn on a5 37...c3 38.Qb5 Kf8 39.Qg5?? Rb6?? 40.Qg7+/– Ke8 41.Qg8?? Kd7?? 42.Qf7+– Kc6 43.Qe6 Kb7 44.Qf7 Ka6 45.Qc4 Kb7 46.Qf7 Ka6 47.Qc4 ½–½. Vera,Gajardo Jorge L (2020) – Da Silva,Saulo de Tarso (2030), Sao Paulo Communic 1st, 2004.

6.cd5 Nd5 7.Nc3 Nc3 8.Bc3 Nd7 =.

6.Nf3 Bd6 7.d4 =+.

6.Nf3 Nbd7 7.Nc3 Nc5 8.d4 Nce4 9.c5 b6 10.Qa4 Nd7 11.Ne4 Be4 12.c6 Bb4 13.Kd1 Nf6 14.Ne5 Bd6 15.f3+= Bf5 16.g4+/– Bg6 17.h4 h5 18.Ng6 fg6 19.g5 Ng8 20.Bh3 Kf7 21.Rf1 Bg3+= 22.e4 Ne7 23.Qb3 Bh4 24.f4 a4=+ 25.Be6 Ke6 26.Qh3 Kf7 27.Qh4 de4 28.f5 gf5 29.Qe4=+ g6 30.Ba3 Nd5 31.Rf5?? gf5–/+ 32.Qf5 Nf6 33.Bb2 Rg8 34.d5?? Qd5–+ (35.Qd5 Nd5–+) 0–1. Johnston,R – Saulmon,Scott, Flint ch–MI class–B, 1992.

6.Nf3 Nbd7 7.Be2 Bd6 8.Nh4 Bg6 9.Ng6 hg6 10.Nc3 (10.cd5 ed5 11.h3 c5=) 10...Nc5 (10...dc4 11.Bc4 Rh2 12.Rh2 Bh2 13.g3=) 11.d4 Nce4 12.h3 Nc3 13.Bc3 Ne4 14.Qc2? (better is 14.Bd2=) 14...Nc3–+ 15.0–0? (better is 15.c5 Ne2 16.cd6 Nd4 17.ed4 cd6 18.Rc1–+) 15...Ne2 16.Qe2 Qg5 17.c5 Be7 18.f4 Qh4 19.a4 g5 20.f5 Qe4 21.fe6 Qe6 22.Rf2 g4! 23.Raf1 gh3 24.Rf7 h2 25.Kh1 Qf7 26.Rf7–/+ Kf7 27.Qf3 Ke6 28.Qg4 Kf6 29.Qf4 Kg6 30.Qg4 Bg5 31.Qe6 Bf6 32.Qd5? Rae8–+ 33.e4 Rh5?? 34.e5–/+ Rh4 35.g3 Rh5 36.Qd7?? Be5?? 37.Qe8+– (37.Qe8 Kf6 38.Qh5 Bd4 39.Qf3 Ke6 40.Qb7+–) 1–0. orangutanb4 (1960) – elartur (1780), kurnik, 2011.

4.e3 Bg4

5.Be2 Be2 6.Qe2 e6 7.Nf3 Bd6 8.c4 0–0 9.0–0 Nbd7 10.d4 Ne4 11.c5 Be7 12.Nc3 Ndf6 13.Ne5 Nc3 14.Bc3 Ne4 15.Be1 f6 16.Nd3 Qe8 17.a4 e5 18.f3 Ng5 19.Bg3 ed4 20.Rfe1 Qd7 21.h4 Nf7 22.ed4 Rae8 23.Qd2 b6 24.Nf4 Bd8 (24...bc5!? 25.Ne6 cd4 26.Nf8 Rf8 27.Qd4 Rc8+–) 25.c6+– Qf5 26.Qa2 g5 27.Qd5 Re1 28.Re1 Qd5 (28...Qc2 29.hg5 fg5 30.Ne6+–) 29.Nd5 Nd6 (29...gh4 30.Bc7 Bc7 31.Nc7+–) 30.Bd6 cd6 31.c7 (31.c7 Bc7 32.Nc7 gh4 33.Nd5+–) 1–0. Nemec,Zdenek (2250) – Couspeyre,Thierry, OP–2012–0–02037, 2012.

5.Be2 Be2 6.Qe2 e6 7.Nf3 Bd6 8.d3 c6 9.e4 Bb4 10.c3 Be7 11.e5 Nfd7 12.c4 0–0 13.0–0 a4 14.Nc3 a3 15.Bc1 Qa5 16.Bd2 Bb4 17.Rfc1 dc4 18.dc4 Bc5 19.Ne4 Qb6 20.Rab1 Rc8 21.Nfg5 h6 22.Qh5 Ne5? 23.Ne6!+– fe6 24.Qe5 cb5 25.Rb5 Nd7 26.Nf6!! (26...gf6 27.Qg3 Kf7 28.Rb6 Nb6 29.Bh6+–; 26.Rb6?! Ne5 27.Re6 Nd3+/–) 1–0. Sveinsson,Jon – Miguel,Juan, CO1–02 www.b2–b4.com, 2003.

5.Be2 Be2 6.Ne2 e6 7.0–0 Bc5 8.Bf6 Qf6 9.d4 Bd6 10.Nd2 0–0 11.c4 dc4 12.Nc4 Nd7 13.a4 Rfd8 14.Rc1 h6 15.Nc3 Qf5 16.e4 Qf4 17.g3 Qf6 18.e5 Ne5 19.de5 Be5 20.Ne4 Qf5 21.Qe2 Bd4 22.Rfd1 Rd5 23.Ncd2 c5 24.bc6 bc6 25.Rc6 Rad8 26.Nf3 e5 27.Rcc1 R8d7 28.Rb1 Rd8 29.Rb5 Rb5 30.ab5 a4 31.Rd3 Bb6 32.Ra3 Ra8 33.Nc3 Re8 34.Ra4 Re6 35.g4 Qf6 36.Nd5 Qg6 37.Ne5 Qg5 38.Ra8 Kh7 39.Rh8 Kh8 40.Nf7 Kg8 41.Qe6 Qh4 42.Ng5 Kf8 43.Qf7 1–0. Bonetti,Shane – LendaFan, ICC, 2002.

5.Nf3 e6 6.Be2 Bd6 7.0–0 c6 8.Nc3 0–0 9.h3 Bh5 10.Re1 Nbd7 11.d4 Qc7=+ 12.bc6 bc6 13.Bd3 Rfb8 14.Rb1 Rb4 15.Qe2 Rab8–/+ 16.Nd1 Ne4 17.c3 R4b6 18.Qc2 Bf3 19.gf3 Ng5 20.Kg2 f5 21.c4 R6b7 22.Rc1 Nf6 23.f4 Nf7 24.cd5 cd5 25.Qa4 Qd7 26.Qd7 Rd7 27.a4 Rc7 28.Rc7 Bc7 29.Bc3 Nd6=+ 30.f3 Nc4 31.Kf2 Rb3 32.Re2 Ra3 33.Bc2 Bd6 34.Bb2 Nb2 35.Nb2 Rc3 36.Bd3 Ba3 37.Bb5 =. Psion – Psion, 4 Min/Zug, 1990.

4.e3 g6

5.c4 dc4 6.Bc4 Bg7 7.d4 0–0 8.Ne2 c6 9.Nbc3 cb5 10.Nb5 Bd7 11.0–0 Bb5 12.Bb5 Nc6 13.Bc6 bc6 14.Qc2 Rb8 15.e4 (Better is 15.Ba3+=) 15...Ne4=+ 16.Ba3 (16.Qe4 Rb2) 16...Qd5 17.Be7 Rfe8 18.Ba3 c5! 19.Rad1 (19.Qc5 Nc5) 19...cd4 20.Rd3 Rec8–+ 21.Qd1 Rd8 22.Re1 Qa2 23.f3 Nd6 24.Bd6 Rd6 25.Qa1 Qc2 26.Qd1 Qb2 27.Nc3 Rc6 28.Na4 Qb4 29.Re2 Qc4 30.Nb2 Qb4?? 31.Kf2?? Rcb6 32.Qc2?? Qb2 33.Qa4 Qb5 34.Qd1 a4 35.Ra3 Ra8 36.Qe1 Rb7 37.g3 Rbb8 38.Qa1 d3 (39.Qe1 Qc5 40.Kg2 Qa3–+) 0–1. Adams,Jonathan (1625) – Gloistein,Bruce, NZL–ch Major op, 1999.

5.c4 c6 6.cd5 cd5 7.Nf3 Bg7= 8.Be2 0–0 9.0–0 Bg4 10.d3 Nbd7 11.Nbd2 a4 12.Rc1 Qb6 13.Ba3 Rfe8 14.d4 h6 15.Qc2 e5 16.de5 Ne4 17.Ne4+/– de4 18.Nd4 Be2= 19.Ne2 Qb5 20.Rfd1 Ne5 21.Nc3 Qa6 22.Ne4+= Rac8 23.Qc8 Rc8 24.Rc8 Kh7 25.h3 Qe2 26.Rcd8?? Qa2–+ 27.Bf8 Qc2 28.Bg7 Kg7 29.R8d4 a3 30.Nd6 a2 31.Ne8?! Kf8 32.Nf6 Qb1 33.Rd8 Ke7 34.Ng8 Ke6 35.R8d6 Kf5 36.Kh2 a1Q–+ 37.Rf6 Kg5 38.f4 Kh5 39.Rb1 Nf3 40.Kg3=+ Qb1 41.Kf3? Kh4 42.Nh6 Qf1 43.Ke4 Qg2 44.Kd3 Qd5 45.Kc2 Qa2 46.Kd3 Qb1 47.Kc4 Qc2 48.Kd5 Qd3 49.Ke5 Qc3 (50.Kd5 Qf6–+) 0–1. Skulsky,Ian – Fullbrook,Nigel (2285), Vancouver British Columbia–ch, 1987.

4.Nf3 Bf5

5.e3 e6 6.c4 Bb1 7.Rb1 Bb4 8.a3 Bc5 9.d4 Bd6 10.c5 Be7 11.Bd3 0–0 12.0–0 Nbd7 13.Qc2 h6 14.c6 bc6 15.Qc6 Ng4 16.Rbc1 Bd6 17.Bc2 Qe7 18.a4 Rab8 19.h3 Ngf6 20.Qc3 Ra8 21.Ba1 Ne4 22.Be4 de4 23.Nd2 Qh4 24.Nc4 Bb4 25.Qb2 Rad8 26.d5 ed5 27.Qg7 1–0. Bonetti,Shane – LendaFan, ICC, 2002.

5.e3 e6 6.c4 Bb1 7.Rb1 Bb4 8.a3 Bc5 9.d4 Bd6 10.c5 Be7 11.Bd3 0–0 12.0–0 Nbd7 13.Qc2 h6 14.c6 bc6 15.Qc6 Ng4 16.Rbc1 Bd6 17.Bc2 Qe7 18.a4 Rab8 19.h3 Ngf6 20.Qc3 Ra8 21.Qd3 Ne4 22.Nd2 Nd2?? 23.Qh7 1–0. Bonetti,Shane – LendaFan, ICC, 2002.

5.e3 e6 6.Be2 Bb4 7.Nh4 0–0 8.0–0 Nbd7 9.a3 Bc5 10.Nf5 ef5 11.d4 Bd6 12.c4 Qe7 13.c5 Nc5 14.dc5 Bc5 15.Nc3 c6 16.Qd3 Ne4 17.Ne4 Qe4 18.Qc3 Qe7 19.Qg7# 1–0. Machete99 – LendaFan, ICC, 2002.

4.Nf3 Bg4

5.e3 Nbd7 6.c4 (6.h3 Bf3 7.Qf3 e5=) 6...e6 7.cd5 (7.h3 Bf5=) 7...Nd5 (7...ed5 8.Be2=) 8.e4 (8.Be2 N7f6=) 8...N5f6 (8...Nf4 9.h3 Bh5 10.g3–/+) 9.h3 Bh5 10.Nc3 Ne5 (10...Nc5 11.Qc2=) 11.g4 Nf3 12.Qf3 Bg6 13.e5 (13.a3 Qd4 14.d3 Nd7=) 13...Nd5 14.Ba3?? (better is 14.Rc1=) 14...Ba3–+ 15.Nd5 (15.Bg2 Bb2 16.Rd1 c6 17.bc6 bc6–+) 15...Qd5 (15...Bb2 16.Nc3 Ba1 17.Qb7–+) 16.Qd5 ed5 17.Ke2 0–0 (17...Bb2!? 18.Re1 Be5 19.Kd1–+) 18.d4 (18.Bg2 Bb2 19.Raf1 Be4–+ (19...Be5?! 20.f4–+)) 18...Rfe8 (18...c5 19.bc6 bc6 20.Bg2–+) 19.Bg2 Be4 20.Be4 de4 21.Rab1 Rad8 22.Ke3 b6?? 23.Rb3–/+ Bb4 24.a3 Bf8 25.Ke4 f6 26.f4 fe5 27.fe5–/+ g6 28.Rc1 Rd7 29.h4 Bh6 30.Rc6 Bg7 31.Rbc3 Red8 32.R3c4 Bf8 33.Rc7= Rc7 34.Rc7 Ba3 35.Rb7 Bb2 36.d5 Ra8 37.Rb6+/– a4 38.Ra6 Re8 39.e6+– a3 40.b6 Rb8 41.d6 Kf8 42.b7! Rb7 43.Ra8 Kg7 44.e7 Rb4 45.Kd5 Rd4 46.Kc5 a2 47.e8Q a1Q 48.Qf8 1–0. aspasio – WILDKNIGHTS, ICC, 1999.

5.Ne5 Bf5 6.c4 (6.e3 Nbd7=) 6...d4 (6...e6 7.e3+=) 7.Nf3 c5 8.e3 d3 (8...de3 9.fe3 Nbd7 10.Be2=) 9.Nh4+= Bg6 (9...Bg4 10.Qb3+=) 10.Ng6+/– hg6 11.Qf3 Qd7 (11...Qc7 12.Be5! Qb6 13.Bd3+/–) 12.Bd3!+– Qd3? (better is 12...a4+–) 13.Qb7 Qc2 (13...e6 14.Qa8 Bd6+–) 14.Qc8# 1–0. aspasio – WILDKNIGHTS, ICC, 1999.

5.Ne5 Bh5 6.c4 (6.g3 c6=) 6...e6 (6...Nbd7 7.cd5 Nd5 8.Nc4=) 7.g3 (7.cd5 ed5 8.Bd4 Bd6+=) 7...Bd6 (7...c6 8.Bg2=) 8.Bg2 0–0 9.d4 Nbd7 (9...c6 10.Nc3=) 10.Nd2 (10.0–0 a4=) 10...a4 (10...c6 11.bc6 bc6 12.Qa4 Be5 13.de5=) 11.Rc1 a3 (11...Qe7 12.f4=) 12.Ba1 (12.Bc3 Qe8=) 12...Re8 (12...Qe7 13.0–0=) 13.h3 (13.c5 Bf8=) 13...Bb4 14.Nd3 (14.g4 Bg6 15.Ng6 fg6+=) 14...Be7 (14...Ba5 15.0–0=) 15.Nf4+= Nb6 16.Nh5 (16.c5 Nc8+=) 16...Nh5 17.e4 g6 (17...Nf6 18.e5 Nfd7 19.0–0+=) 18.c5 Nc8 (18...Na4 19.Qb3+=) 19.e5 (19.0–0 Bg5+=) 19...c6 (19...f6 20.0–0+=) 20.b6 f6 21.ef6 (21.0–0 Ng7+=) 21...Bf6 22.Qe2 (22.0–0 e5+=) 22...Ng7 (22...Bg7 23.0–0+=) 23.Nf3+/– Nf5 (23...Rf8 24.0–0+/–) 24.0–0 Bg7 25.Ne5 Nce7 (25...Ra4 26.Rfe1+/–) 26.Rce1 Ra4 27.g4 Nh4+= 28.Bh1 Nc8 29.f4 Rf8 30.Rb1 Qe8 31.Qe1 Bf6 32.Qg3 Ne7 33.Rbd1 Kh8 34.Rd3 Qc8 35.Ra3+– Ra3 36.Qa3 Be5 37.de5 Qa8 38.Qc3 Qa2 39.Qe1 g5 40.fg5 Rf1 41.Qf1 Kg8 42.Bd4 Qd2 43.Qf2 Qg5 44.Qf6 Qf6 45.ef6 ½–½. aspasio – Saltis, ICC, 1999.

3.Nc3 d5

4.d4 Ne4 5.Qd3 (5.Ne4!? de4 6.e3=) 5...Bf5+= 6.Qf3 (6.Ne4 Be4 7.Qb3 e6+=) 6...Bg6 (better is 6...e6 7.Ne4 Be4–/+) 7.e3?? (better is 7.Ba3+=) 7...Nc3–+ 8.Nh3 (8.Bb2 Na4 9.Ba3 Bc2–+) 8...e6 (8...Qd7 9.Bb2 Nb5 10.c4–+) 9.Ng5 (9.Bd2 Ne4 10.Nf4–+) 9…Qg5 (9...Qg5 10.a3 Be4–+) 0–1. Ritter – Andre, corr SOK–90–61, 1990.

4.d4 e6 5.Qd3 +=.

4.Nf3 e6

5.e3 Bd6 6.d4 Nbd7 7.Be2 Qe7 8.0–0 0–0 9.Qd3 e5 10.e4 c6 =+.

5.e3 Bd6 6.d4 Nbd7 7.Be2 Qe7 8.0–0 0–0 9.Bd3 c5 10.bc6 bc6 =.

5.e3 Bd6 6.Be2 e5 7.0–0 0–0 8.Bb2 Bf5 9.d3 a4 10.a3 Nbd7 =+.

3.c4 c6

4.Ba3 g6 5.Nf3 Bg7 6.Nc3 0–0 7.e4 d6 8.d4 Bg4 9.Be2 Nbd7 10.bc6 bc6 11.h3 Bf3 12.Bf3 Nb6 (12...Rb8 13.Rb1=) 13.Qe2 (13.Qd3 Rb8+=) 13...Qc7 (13...Nh5 14.Rd1 Nf4 15.Qf1+=) 14.c5 (14.0–0 Rfb8+=) 14...Nc8 (14...dc5!? 15.Bc5 Nfd7 16.Be7 Bd4=) 15.0–0+= Rd8 16.Rab1 Na7 (16...dc5 17.e5 Nd7+=) 17.Rb6 (17.cd6!? ed6 18.Rfc1+/–) 17...Nd7 18.Rfb1 Bd4 (18...dc5!? 19.Rb7 Qc8+=) 19.cd6= ed6 20.Rb7 Qc8 21.Bd6 Nb5 22.R1b5 cb5 23.Rc7 (23.Rc7 Qa6 24.e5=). Grehl,Siegfried – Bedbur,Heinz, corr SOK–92–78, 1992.

4.a4 e5 5.Bb2 Bc5 (5...e4 6.Nc3=) 6.e3 (6.Be5 Bf2 7.Kf2 Ng4 8.Ke1 Ne5–/+) 6...d6+= 7.Nf3 (7.d4 Bb4 8.Bc3 0–0+=) 7...0–0 (7...e4 8.d4 Bb4 9.Nfd2=) 8.d3 (8.d4 Bb4 9.Nc3 e4=) 8...Re8 (8...Nbd7 9.Be2=) 9.Be2= Bb4 10.Nc3 d5 (10...e4 11.Nd4=) 11.0–0 d4 12.Na2 c5 13.Nd2 Bd2 14.Qd2 Qc7 (14...Bg4 15.Rae1=) 15.Rae1 Bf5 (15...Nbd7 16.f4=) 16.Qd1 de3 (16...Qe7 17.f4 ef4 18.ed4 Qe3 19.Kh1 cd4 20.Nc1+/–) 17.fe3+= Bg6 18.Rf2 (18.Nc3 Qd6+=) 18...Nbd7= 19.Nc3 Rad8 20.Qc1 (20.e4 b6=) 20...Nb6 (20...Qd6 21.Rd1=) 21.e4 Qd6 22.Qc2 Nbd7 23.Ref1 b6 24.Bc1 h6 25.Kh1 Kh7 26.Bd2 Re6 27.Nd5 Ree8 28.Qc1 Nd5 29.cd5 Rf8 30.Bg4+= Nf6 31.Bf5 Ng8 32.Bg6 Kg6 33.Qd1 f6 34.Qg4 Kh7 35.Rf3 Ne7 36.Qh5 f5 37.g3 Qf6 38.Bc3 g6 39.Qh3 g5 40.Rf5 Nf5 41.Rf5 Qg6 42.Re5 g4 43.Re7= Rf7 44.Qh4 Rdf8 45.Be5 c4= 46.Rf7 Qf7 Threatening mate: Qf1 47.Bf4 Qg7 48.dc4 Qa1 49.Kg2 Qa2 50.Kg1 The mate threat is Qxh6 50...Qa1 ½–½. Poschmann,Hans – Schulz,Hans_Juergen, TT–04.19 TSC, 2002.

4.Bb2 a4 5.e3 d6 6.Nf3 e5 7.Be2 Be7 8.0–0 0–0 9.d4 e4 10.Nfd2 cb5 11.cb5 d5 12.Ba3 Ba3 13.Na3 Qd6 14.Nc2 Bf5 15.a3 Nbd7 16.Nb4 Nb6 17.Rc1 Rfc8 18.Rc8 Rc8 19.Qa1 Qc7 20.h3 h6 21.Rb1 Bd7 22.Qa2 Qc3 23.Kh2 Qc7 24.g3 Qd6+= 25.Rb2 Qe6 26.Bf1 Rc1 27.Bg2 Qd6 28.Bf1+= Qe6 29.Bg2 Qf5 30.Nb1?? Nc4 31.Rc2–/+ Rb1! 32.Qb1 Na3 33.Qb2 Nc2 34.Qc2 0–1. Melich,Jindrich (2075) – Garcia Del Rey,Senen (2315), X Calvia ESP, 2013.

4.Bb2 d6 5.d4 d5 6.e3 Be6 7.cd5 Bd5 8.Nc3 Qc7 9.Qd3 Nbd7 10.e4 Be6 11.Nf3 0–0–0? 12.bc6+– (12...bc6 13.Qa6 Qb7 14.Qa5+–) 1–0. Nemec,Zdenek (1885) – Valica,Slavo (1630), b2–b4.com, 2005.

4.Nc3 d5 5.cd5 cd5 6.d4 =.

4.Nc3 e5 5.e3 Bb4 6.Bb2 d5 7.a3 Bc3 8.dc3 Bg4 9.Be2 Be2 10.Qe2 cb5 11.cb5 Nbd7 12.Nf3 Qc7 13.0–0 Nb6 14.Rac1 Nc4 15.a4 0–0 16.Qc2 e4 17.Nd4 Ng4 18.g3 Nge5 19.Rcd1 Rac8 20.Bc1 Qc5 21.Nb3 Nf3 22.Kg2 Qd6 23.Nd2 Ncd2 24.Bd2 Qf6 25.Rc1 Rc4 26.Rfd1 Ng5 27.h4 Qf3 28.Kf1 Nh3 29.Be1 Qh1 30.Ke2 Ng1 31.Kd2 Nf3 32.Ke2 Nh2 33.Bd2?? Qf3 34.Ke1 Ng4 (34...Ng4 35.Qe4 Qf2) 0–1. Rush,Bradley – Molano,Ismael, ZL–2011–0–00994, 2011.

4.Nc3 e6 5.Bb2 Be7 (5...d5 6.e3=) 6.Nf3 (6.e4 d6=) 6...0–0 (6...d5 7.e3=) 7.e3 b6 (7...cb5 8.cb5 d5 9.Rc1=) 8.Be2 Bb7 9.0–0 d6 (9...d5 10.Rc1=) 10.d4 Nbd7 11.a4 cb5 12.cb5 Rc8 13.Rc1 Nd5 (13...Ne4 14.Bd3 Ndf6 15.Qe2=) 14.Nd5 Bd5 15.Qd2 (15.Qd3 Nf6=) 15...Nf6 16.Rc8 Qc8 17.Rc1 Qd7 (17...Qd8 18.Qc2=) 18.Qc2 (18.Qc3 Qd8=) 18...Bd8 (18...Be4 19.Bd3 d5 20.Ne5+=) 19.Nd2+= Bb7 20.e4 h6 (20...Ne8 21.Bd3+=) 21.Bf3 Be7 22.Qb1 Rc8+= 23.Rc2 d5 24.e5 Nh7 25.Qc1 Nf8 26.Rc8 Qc8 27.Qc8 Bc8 28.Bd1 Ng6 29.g3 Bb4 30.Nf1 Bd7 31.f4 Be8 32.Kf2 Ne7 33.Bc2 f6 34.Kf3 Bg6= 35.Bg6 Ng6 36.Ne3 f5 37.Nd1 Kf7 38.Ke3 Nf8 39.Nf2 h5 40.h4 Ke8 41.Nd3 Be7 42.Bc3 Nd7= 43.Nf2 Nf8 44.Nh3 (44.Nd1 Ng6=) ½–½. Liepert,Luise – Lueckerath,Kristiane, BL (Women) Germany, 1993.

4.Nc3 g6 5.Bb2 (5.e4 cb5 6.cb5 d5=) 5...Bg7 (5...d6 6.d4=) 6.e3 (6.Ne4 d6=) 6...0–0 7.Qc2 (7.d4 d5=) 7...d5 8.Nf3 Bf5 9.Bd3 (9.Qa4 dc4 10.Bc4 Bd3=) 9...Bd3 10.Qd3 Ne4 (10...a4 11.a3+=) 11.cd5 (11.Ne4? Bb2 (11...de4?! 12.Qd8 Rd8 13.Bg7–/+) 12.Rb1 de4 13.Qe4 Ba3–+) 11...cd5 12.Rb1 (12.Rc1 Nc5 13.Qc2 Qd7=) 12...Nc3 (12...Nc5 13.Qc2=) 13.Bc3+= e6 (13...Bc3 14.dc3 e6 15.0–0+=) 14.Bg7 Kg7 15.0–0 Nd7 16.Qd4 (16.Rfc1 Rc8+=) 16...Kg8 (16...Qf6 17.Qg4=) 17.Rbc1 b6 (17...Rc8 18.Rc8 Qc8 19.d3+=) 18.Rc6 Nc5 (18...Rc8 19.d3+=) 19.Rc1+/– Rc8 (19...a4 20.d3+/–) 20.Ne5 f6 21.Rc8 Qc8 22.Nd3 Qd7 (22...Qb7 23.Nc5 bc5 24.Rc5+/–) 23.Nc5+– bc5 24.Qc5 (24.Qc5 a4 25.Qc6+/–; 24.Rc5 Qb7+–) 1–0. Sammy8 (1815) – Orangattackman, internet, 2005.

4.e3 d6 5.Nf3 (5.d4 e5=) 5...e5 (5...cb5 6.cb5 e5 7.Bb2=) 6.Bb2 (6.d4 e4 7.Ng5 h6–/+) 6...Be7 (6...cb5 7.c5=) 7.Be2 (7.d4 e4 8.Nfd2 0–0+=) 7...e4 (7...cb5 8.c5+=) 8.Nd4 d5 (8...c5 9.Nb3+=) 9.0–0= c5 10.Nc2 (10.Nb3 dc4 11.Bc4 a4=) 10...0–0 (10...dc4 11.Nba3+=) 11.d4 dc4 (11...Nbd7 12.Nc3=) 12.Nd2 (12.dc5 Bc5 13.Bc4 Bg4 14.Qd8 Rd8 15.Bf6 gf6+=) 12...Qb6 (12...Be6 13.Bc4 Bc4 14.Nc4=) 13.a4 (13.Bc4 Rd8=) 13...Rd8 14.Rc1 c3 (14...Be6 15.Nc4 Qc7 16.Qd2=) 15.Bc3 Nbd7 (15...Be6 16.Nc4 Bc4 17.Bc4+=) 16.Na1 (16.Nc4 Qc7+=) 16...cd4 (16...Qd6 17.Nab3 cd4 18.Nd4=) 17.Bd4 Qe6 18.Bc4 Qf5 19.f3 ef3 20.Qf3 Qf3 21.Nf3 b6 22.Ng5 Rf8 23.e4 Bb7 24.Bf7 Rf7= 25.Nf7 Be4?? 26.Ne5 Ne5 27.Be5 Rd8 28.Rfe1 Ba3 29.Rc7 Bg6 30.Nb3 Rd3 31.Rc8 Kf7 32.Nd4 Bb4 33.Rc7 Kg8 34.Rec1 Ne8 35.Rc8 (35.Rc8 Bd2 36.R1c4+–) 1–0. Milde,Lars – Schulz,Hans_Juergen, TT–05 TSC, 2003.

4.e3 Ne4 5.d3 Nc5 (5...Nf6 6.Nf3=) 6.Nf3 e6 7.Bb2 (better is 7.d4 Ne4 8.Ba3+=) 7...Qf6?? (better is 7...cb5 8.cb5 d5+=) 8.Bf6+– gf6 9.Qc2 Bg7 (9...d6 10.d4 Ncd7 11.Nbd2+–) 10.d4 f5 11.Nc3 d5 12.dc5 dc4 13.Bc4 Nd7 14.bc6 bc6 15.0–0 Nc5 16.Rab1 Bd7 17.Na4 Ne4 18.Bd3 Nf6 19.Nc5 Rd8 20.Nd7 Rd7 21.Qc6 Ke7 22.Qc5 Rd6 23.Rb7 (23.Rb7 Nd7 24.Bb5+–) 1–0. Fournier,Frederic (1730) – esaubeat, Active, 2007.

4.Nf3 cb5 5.cb5 d5 6.e3 (6.Bb2 e6=) 6...Bg4 7.Ba3 (7.d4 Nbd7=) 7...Nbd7 8.h3 (8.d4 Rc8=) 8...Bf3+= 9.Qf3 e6 (9...e5 10.Bf8 Nf8 11.Nc3+=) 10.Bf8= Nf8 11.Be2 (11.Nc3 Ng6+=) 11...Ng6+= 12.0–0 0–0 (12...Qc7 13.g3+=) 13.Nc3 (13.d4 Rc8=) 13...Qd6 14.g4 (14.Rac1 Nh4 15.Qg3 Qg3 16.fg3 Nf5+=) 14...Rfc8+= 15.g5 Nd7 16.Rac1 Nde5 17.Qh1 (17.Qg3 d4 18.ed4 Qd4+=) 17...Nc4 18.Rfd1 (18.Bc4 Rc4 (worse is 18...dc4 19.Qb7 Rab8 20.Qe4=) 19.Qg2 Rac8–/+) 18...Nh4 19.Qh2 (19.Bc4 Rc4 20.Ra1 Rac8–/+) 19...Qa3 20.Rc2 Nd2 21.Rdd2 Rc3 22.Qe5 Rcc8 23.Qd4 Nf5 Black gets in control 24.Qb6 Qe7–+ 25.Kf1 Nd6 26.Bd3 Nc4 27.Bc4–/+ Rc4 28.Rc4 dc4 29.a4 c3 30.Rc2 Rc8 31.Ke2 e5 32.Qa5 Qa3 33.Kf3 Qb3 34.Rc1 Qd5 35.Kg3 e4 36.Qb4 Qg5 37.Kh2 Qd5 38.Kg2 Qd2 Black plans c2 39.Qa3 c2 40.a5 Qd1 41.Qb2 Qe2 42.Kg1 Rc5 Do you see the mate threat? 43.h4 h6 44.Qb3 g5 45.h5 g4 (45...g4 46.Rc2 Rc2 47.Qc2 Qc2–+) 0–1. Magat – Pommerel,Wim, email 4AMM–05, 1997.

4.Nf3 e6 5.e3 Be7 6.Be2 0–0 7.0–0 d5 8.Nc3 (8.cd5 Nd5 9.d4 cb5 10.Bb5 Bd7=) 8...Ne4 (8...dc4 9.Bc4 cb5 10.Nb5=) 9.Bb2 Nd7 (9...Nc3 10.Bc3 cb5 11.cb5+=) 10.Qc2 Bf6 (10...Ndc5 11.Rab1+=) 11.Rab1 (11.d4 Nc3 12.Bc3 cb5 13.cd5 ed5 14.Bb5 Be7+=) 11...Nc3 12.Bc3 Bc3 13.Qc3 c5 (13...cb5 14.cb5 b6 15.Rbc1+=) 14.cd5 (14.d4 b6+=) 14...ed5 15.b6 Qe7 16.Rb5 (16.Rfc1 a4+=) 16...Qd6 17.Rfb1 (17.Qa3 A) worse is 17...Nb6 18.Qc5 (18.Rc5? Nc4 19.Bc4 dc4–+) 18...Qc5 19.Rc5+/–; B) 17...Qe6=) 17...Ra6 (17...a4 18.d4 c4 19.e4 de4 20.Nd2+=) 18.h3 (18.Ra5 Rb6 19.Rc1 Qg6+=) 18...Re8= 19.Ra5 d4 20.Qa3 Rb6 21.Rb6 Qb6 22.Bb5 de3 23.de3 Qf6 (23...Qd6 24.Qd3 Qc7 25.Ra8=) 24.Bd7 (24.Qd3 Qa1 25.Qf1 Qf6+=) 24...Bd7 25.Rc5 Bh3 26.Qb4 (26.gh3 Qf3) 26...Qa1 (26...Be6 27.Nd4 Ba2 28.Qb7=) 27.Kh2+= Bc8 (27...Be6 28.Ra5+=) 28.Qe4 Be6 (28...Re4?? 29.Rc8 Re8 30.Re8) 29.Qb7 (29.Ng5 g6+=) 29...Qa2= (29...Ba2?? 30.Rc8 h6 31.Re8 Kh7 32.Qa8+–) 30.Qc6 Rd8 31.Rc2 Qa5 32.Nd4 Qg5 33.Qf3 Bd5 34.Qg3 Qh5 35.Qh3 Qe5 36.Qg3 Qh5 37.Qh3 Qe5 38.Qg3 Qh5 ½–½. Nokarookoff – PeterRs, ChessWorld.net, 2006.

4.a4 d5

5.d4 dc4+= 6.e3 cb5 7.ab5 e5 8.Bc4 ed4 9.Bb2 (better is 9.Qd4!? Be6 10.Be6 fe6 11.Ne2=) 9...Bb4–/+ 10.Kf1 Be6 (10...de3!? 11.Qd8 Kd8 12.fe3 Ke7–+) 11.Be6+= fe6 12.Qd4 Qd7 13.Qd7 Nbd7 (worse is 13...Nfd7 14.Bg7 Rg8 15.Bc3+=; 13...Kd7?! 14.Bc3 Bc3 15.Nc3+=) 14.Ba3 Ba3 15.Ra3 0–0 16.Nd2 (16.Ke2 Rfc8 17.Nf3 Rc2 18.Nbd2 e5=) 16...Ng4 (16...Rfc8!?–/+) 17.Ngf3= Rac8 18.Ke2 b6 19.h3 Nge5 20.Nd4 Nc4 21.Ra2 Kf7 22.Rc1 Nd6= 23.Rac2 Rc2 24.Rc2 Nc5 25.f3 e5 26.Nc6 Ke6 27.Na5 Nb5 28.Nac4+/– Nd7 29.Nb6! Re8 30.Rc6+– Ke7 31.Nd5 Kf7 32.Nc7 Rc8+/– 33.Nb5?? Rc6–/+ 34.Ne4 Nf6 35.Nf6 gf6 36.Kf2 f5 37.g4 Kg6 38.h4 fg4–+ 39.fg4 Rc4 40.Kf3 h5 41.gh5 Kh5 42.Nd6 Rh4 43.Nf5 Ra4 44.Ng3 Kg6 45.e4? Ra3 46.Kg4 Re3 47.Kh4 Rf3 48.Kg4 Rf4 49.Kh3 Kg5 50.Kg2 Kg4 51.Nh1 Re4 52.Nf2 Kf4 53.Ne4 Ke4 54.Kf2 Kd3 55.Kf3 e4 56.Kf2 Kd2 0–1. Baer,Cy (1895) – Bertram,Mike (2050), CiF, 2007.

5.cd5 cb5 6.ab5 Nd5 =.

5.cd5 Nd5 6.Nf3 Bf5 =.

5.e3 e5 6.Bb2 Bd6 7.d3 (7.d4 Bg4 8.f3 Bb4 9.Ke2 Be6 10.de5 Ng8=) 7...0–0 8.Nf3 Bg4 9.Be2 Nbd7 10.Nbd2 Rc8 11.0–0 cb5 (11...Qc7 12.Rc1+=) 12.cb5 (12.ab5 Qc7=) 12...Re8 13.h3 Bh5 14.Re1 Bg6 (14...Nb6 15.Rc1+=) 15.Nb3 (15.Nh4 Nf8+=) 15...Bb4+= 16.Nfd2 (16.Rf1 Bf5+=) 16...Bc3 (16...Nb6 17.f4 e4 18.Nc1–/+) 17.Bc3+= Rc3 18.Rc1 Qc7 19.Rc3 (19.Nb1 Rc1 20.Qc1 Qd8=) 19...Qc3 20.Qc1 (20.d4 Bc2 21.Qc1 Ne4=) 20...Qb4+= Black prepares e4 21.Qa1 Nb6 22.Rc1 Na4–/+ 23.d4 e4 24.Rc2 h6 25.Qc1 Bf5 26.Nc5 Nc5 27.Rc5 a4 28.Qc3 Qc3–+ 29.Rc3 Ra8 30.Nb1 Ra5 31.Na3 Ne8 32.Rc5 Be6 33.Kf1 Kf8 34.Ke1 Ke7 35.Kd2 Nd6 36.Kc3 White gets the initiative 36...Nc8 37.Rc7= Kd6 38.Rb7 Ne7 39.b6+= Bd7 40.Kb4 Nc6= 41.Kc3 Ra8 42.Nb5 Ke7 43.Bg4 Rd8 44.Na7 Na5 45.Rc7 Kd6 46.Kb4 a3? 47.Ka5 a2 48.Rc1 (48.Rc1 Bg4 49.hg4+–) 1–0. Bakkers,Max JTh – Bedbur,Heinz, corr SOK–90–57, 1990.

5.e3 e5 6.d4 ed4 7.Qd4 Bb4 8.Bd2 +=.

5.e3 Bf5 6.cd5 cd5 (worse is 6...Qd5 7.Nc3 Qd7 8.Nf3+=) 7.d4 (7.Nf3!?=) 7...e6–/+ 8.Bd2 Bd6 9.Nf3 Nbd7 10.Nc3 Rc8 11.Nh4 Bg4 12.Be2? (12.f3 Rc3 13.Bc3 Ne4–+) 12...Be2 (better is 12...Rc3!? 13.Bg4 Rd3–+) 13.Ne2–/+ Ne4 14.Nf3 0–0 15.0–0 Ndf6 16.Rc1 b6 17.Rc8 Qc8 18.Qb1 (better is 18.Ne5!? Be5 19.de5–/+) 18...Qc4–+ 19.Ng3 Qa4 20.Rc1 Nd2 21.Nd2 Bb4 (21...Qb4 22.Rc6 Rb8 23.Qc2–+) 22.Ngf1 (22.Nf3 Qb5 23.Ne5 Qa4–+) 22...Qb5 23.Qc2? (23.Nf3 Qa6–+) 23...h6 (23...a4 24.Nf3–+) 24.Rb1 (24.Qb2 Qa6 25.Nf3 Rc8–+) 24...Qd7 25.Qb2 Rc8 26.Nb3 (26.Nf3 Qa4 27.Rc1 Rc1 28.Qc1 Qe8–+) 26...Ne4 27.Nfd2 (27.Nc1 Nc3 28.Ra1 Qb5–+) 27...Nd2 (better is 27...Bc3 28.Qa2 Bd2 29.Nd2–+) 28.Nd2 Bd2 (28...Qa4!? 29.Nb3–+) 29.Qd2 Qc6 30.Qb2 (30.h3–+) 30...Qc2 31.h3 Qb2 32.Rb2 Rb8 33.Kf1 Kf8 34.Ke2 Ke7 35.Kd3 Kd6 36.Kc3 b5 37.Kb3 Kc6 38.Rc2 Kb6 39.f3 Rb7 (better is 39...Kb7 40.Ra2 Ra8 41.g3–+) 40.e4 (40.Rc8–+) 40...Rc7 41.Rd2 (41.Re2 a4 42.Kb2 Rc4–+) 41...a4 42.Ka3 (42.Kb2 b4–+) 42...Rc3 43.Ka2 b4 44.Rb2 (44.Kb2–+) 44...Kb5 0–1. Kolodziejski,D (1800) – Wojtaszek,Radoslaw (2000), Poland–chT2 U18, 1996.

4.a4 g6

5.Bb2 Bg7

6.d4 cb5 7.ab5 d5 8.e3 =.

6.d4 d5 7.e3 0–0 8.Nf3 cb5 (8...Nbd7 9.Nc3=) 9.cb5 (9.ab5 Bg4=) 9...Bg4 10.Be2 Nbd7 11.0–0 Rc8 (11...Nb6 12.Nbd2=) 12.Nbd2 Nb6 13.Qb3 Ne4 14.Bd3 Bf3 15.Nf3 Nc4 16.Qa2 e6 (16...Qd6 17.Rfc1 Qe6 18.Rc2=) 17.Rac1+= Nb2 18.Qb2 Nc5 19.Bc2 Nd7 20.Bd3 (20.Qa3 Qf6=) ½–½. Poschmann,Hans – Pommerel,Wim, email 4AMM–F, 1998.

6.e3 0–0 7.Nf3 d5 8.d4 Ne4 9.Bd3 f5 (9...Nc5 10.Be2=) 10.0–0 e6 (10...Be6 11.Qc2=) 11.Nbd2 Nd7 12.Ba3 Rf7 13.Rc1 g5 (13...e5 14.cd5 cd5 15.Bb2 Nd2 16.Qd2–+) 14.h3 h5 (14...e5 15.cd5 cd5 16.Bb2 Nd2 17.Qd2–+) 15.Nh2 (15.bc6 bc6 16.cd5 cd5+=) 15...g4 16.Be4 (16.cd5!? cd5 17.hg4 hg4 18.Be4 de4 19.Nc4+=) 16...de4+= 17.hg4 hg4 18.Ng4 (18.Bb2=) 18...Qh4 (18...fg4 19.Qg4 cb5 20.cb5 Nb6 21.Ne4 e5=) 19.bc6 (19.Nh2 e5 20.d5 cd5 21.cd5 Nf6+/–) 19...bc6 20.Nh2 Bd4?? (better is 20...e5+=) 21.Re1 (21.ed4 Rh7 22.Bd6+/–) 21...Rh7 (21...Be5 22.Ndf1–/+) 22.Ndf1 (22.ed4 Qh2 23.Kf1 e5=) 22...Bc5 (22...Bg7 23.Qd6 Ne5 24.Bb2+=) 23.Bb2 (23.Bc5!? Nc5 24.g3+=) 23...Bb4 24.Re2 (24.Bc3 e5–/+) 24...Ba6 25.Ba1 (25.Qc2 Bd6 26.g3 Qh6–/+) 25...Rd8 26.g3 (26.Rb2 Ba3 27.g3 Qh3–+) 26...Qe7 27.Qc2 Nb6 28.Qa2 (28.Nd2 e5–+) 28...Rd3 (28...e5 29.g4–+) 29.Bb2 c5–+ (29...c5 30.f3 Qd7–+) 0–1. Trokenheim,Marek – Sulmad,Martti, corr SSKK 1–431, 1990.

6.e3 d6 7.f4 Nbd7 (7...0–0 8.Nf3+=) 8.Nf3= Nb6 9.Be2 Qc7 10.Na3 0–0 11.0–0 Nbd7 12.Qe1 c5 13.Qh4 b6 (13...Rb8 14.d3+=) 14.d3+= Bb7 15.e4 Rae8 16.g4 White plans f5 16...e5 (16...Nh5 17.Bg7 Ng7 18.Ng5+=) 17.f5 (17.g5 Nh5 18.fe5 de5+=) 17...h6 (17...gf5 18.gf5 Kh8 19.Kh1+=) 18.Bc1 Qd8 (18...g5 19.Qh3=) 19.Bh6 (better is 19.fg6!? fg6 20.Bh6+/–) 19...Bh6= 20.Qh6 Ng4 21.Qh3 Ngf6 22.Kf2 Kg7 23.Rg1 Rh8 24.Qg2 Rh6 25.Raf1 Reh8 26.Nc2 Nh5 27.h4 Nf4+= 28.Qg3 Nf6 29.Ne3?? Be4!–+ Black gets the initiative 30.fg6 Rg6 31.Qh2 Bd3 32.Bd3 Nd3 33.Ke2 Nf4 34.Ke1 Kf8 35.Rg6 Ng6 36.Qd2 e4 37.Ng5 Nh4 38.Qc3 Nf3 39.Nf3 ef3 40.Rf3 Rh1 41.Nf1 Ne4 42.Qe3 Qh4 43.Kd1? Qg4 44.Ke1 f5 45.Kd1?? Rf1 (45...Rf1 46.Kc2 Qg2 47.Rf2 Qf2 48.Qf2 Rf2 49.Kd1 Rd2 50.Ke1 f4 51.Kf1 f3 52.Kg1 d5 53.cd5 Ng3 54.d6 Rg2#) 0–1. Ulaneo,Ruben – Frontan,F, URU–chT Uruguay, 1988.

6.Nf3 0–0 7.e3 d5 8.Be2 cb5 9.cb5 b6 (9...Bg4 10.0–0=) 10.0–0 Nbd7 (10...Bg4 11.Nc3=) 11.d4 Bb7 (11...Ne4 12.Nbd2+=) 12.Nbd2 (12.Nc3 Rc8+=) 12...Rc8 13.Nb3 (13.Rc1 Rc1 14.Bc1 Ne4+=) 13...Ne4= 14.Qd3 h6 15.Rac1 Kh7 (15...Ndf6 16.Ne5+=) 16.Ba3 Re8 17.Nfd2 (17.Rc8 Qc8 18.Rc1 Qb8+=) 17...f5 (17...e5 18.Rc8 Bc8 19.Ne4 de4 20.Qc2+=) 18.f3 (18.Rc8 Bc8 19.Ne4 fe4+=) 18...Nef6 (18...Nd2 19.Qd2 e5 20.Rc8 Bc8 21.Rc1+=) 19.Rc8 (19.f4 Rc1 20.Rc1 Ne4+=) 19...Qc8 (19...Bc8 20.f4+=) 20.Rc1 (20.f4 Qc7+=) 20...Qb8 (20...Qd8+=) 21.Nf1 (21.f4 Qa8+=) 21...e5= 22.de5 (22.Qb1 Rc8=) 22...Ne5 (22...Qe5 23.Qc2=) 23.Qd1 Rc8 (23...Rc8 24.Nfd2 Rc1 25.Qc1 Qe8+=). StephenHilton – GmLencioni (1605), internet, 2006.

6.g4 0–0 7.g5 Nh5 8.Bg7 Ng7 9.h4 d5 10.c5 Bf5 11.d4 Nd7 12.b6 (12.e3!?=) 12...e5+= 13.e3 ed4 14.ed4 Re8 15.Be2 Qe7 16.Nc3 Nc5 (16...Be4!? 17.Rh3 Rad8+=) 17.dc5= Qc5 18.Rc1 Qb6 (18...d4 19.Ne4 Qb4 20.Nd2 d3–/+) 19.h5? (19.Nf3 Rad8 20.Qd4 Qd4 21.Nd4 c5 22.Nf5 Nf5=) 19...Nh5 (19...d4 20.hg6 fg6 21.Nb1=) 20.Kf1 Re5 (better is 20...d4!? 21.Bh5 dc3–/+ (worse is 21...gh5 22.Nce2=)) 21.Bh5 gh5 22.Qh5 Bg6 23.Qh2 (23.Qh4!?=) 23...Qa6 (23...Bd3!? 24.Nge2 Rae8–/+ (24...Rg5?! 25.Rd1 Bg6 26.Qf4=)) 24.Nge2+= Rae8 25.f4 Re3 (25...Re2 26.Ne2 Be4 27.g6 Bg6 28.Rg1+=) 26.Kg1 d4?? (26...Re2 27.Ne2 Re2 28.Qg3–+) 27.Nd4?? (27.f5 Bf5 28.Nd4+=) 27...Rc3?? (better is 27...Qb6 28.Qd2 Rd3–+) 28.Rc3+– Qb6 29.Rd3?? Bd3 30.Qf2 Qb1 31.Kg2 Be4 32.Nf3 Bf3 33.Qf3 Qc2 34.Kg3 Qa4 35.g6 fg6 36.Kg4 Qc4 37.Rh2 Qe6 38.Kg3 Qe3 39.Rb2 Qf3 40.Kf3 b5 41.Rd2 b4 (41...b4 42.Rc2 Re6–+) 0–1. breaker – boa, ChessWorld.net, 2004.

4.Bb2 cb5

5.cb5 b6 6.d3 e6 7.Nf3 Be7 8.e3 0–0 9.Be2 Bb7 10.0–0 d6 11.Nc3 Nbd7 12.a4 Rc8 13.Rc1 d5 14.Nd4 Bd6 15.g3 (15.f4 Qe7=) 15...Qe7 16.Bf3 Ba3 17.Ba3 Nc5?? (better is 17...Qa3 18.Qd2 Nc5=) 18.Nc6! Bc6 19.bc6 Rc6 20.d4 Rd8 21.dc5 bc5 22.Nb5 Rdc8 (22...Nd7 23.Nd4! Rc7 24.Nb3+–) 23.Rc2 (23.Qd2 Ra6+–) 23...Nd7 (23...Qb7 24.Bb2 Nd7 25.e4+–) 24.Na7 1–0. Salvatore – PeterRs, ChessWorld.net, 2006.

5.cb5 b6 6.e3 Bb7 7.f4 (7.Nf3 d5=) 7...e6 (7...d5 8.Nf3=) 8.Nf3 d6 (8...d5 9.Be2=) 9.Be2+= Nbd7 (9...Be7 10.Nd4+=) 10.Na3 (10.Nc3 Be7=) 10...Be7= 11.0–0 0–0 12.Nd4 Rc8 13.Rc1 Nc5 (13...d5 14.Nc6 Qe8 15.Ne7 Qe7 16.Nc2+=) 14.Nc4 (14.Nc6 Qd7+=) 14...Nfd7= 15.d3 d5 (15...Qc7 16.Nc6 Bc6 17.bc6 Qc6 18.d4=) 16.Nd2 (16.Ne5 Ne5 17.fe5 g6=) 16...Bf6 17.N2f3 (17.Ba3 e5 18.fe5 Ne5 19.Nf5+/–) 17...Qe7 (17...Qc7!?=) 18.Ba3+/– Qd8? (better is 18...Qe8+/–) 19.Nc6!+– (19.Nc6 Qe8 20.d4+–) 1–0. pierred (2750) – dubdub (2000), net–chess.com, 2008.

5.cb5 d5

6.Nf3 Bf5 7.e3 Nbd7 8.Be2 e6 9.0–0 Bd6 10.d4 0–0 11.Nc3 Ne4 12.Ne4 Be4 13.Bd3 Nb6 14.Rc1 f5 15.Be2 Bf3 16.Bf3 Nc4 17.Bc3 Ba3 18.Rb1 Rc8 19.Qb3 Bd6 20.Rfc1 Rf7 21.b6 Rc6 22.Qa4 Qb8 23.g3 f4 24.gf4= Bf4 25.ef4 Qf4 26.Bg2 Qf2 27.Kh1 Ne3 28.Rg1 Qf4 29.Qc6?? bc6–+ 30.b7 Rb7! 31.Rbf1 Nf1 32.Rf1 Qe3 33.Ba5 Qd4 34.Be1 Rb1 35.Rg1 c5 36.Bf2 Rg1 37.Bg1 Qd1 (38.h3 c4–+) 0–1. Thoma (2040) – Borrmann (1875), TT–17.51 ETC, 2005.

6.e3 Bf5

7.Nf3 Nbd7 8.Be2 e6 9.0–0 Bd6 10.Nc3 0–0 11.d3 Rc8 (11...e5 12.e4 Be6 13.ed5 Bd5 14.Nd5 Nd5 15.Rc1=) 12.Rc1 (12.Nh4 Bg6=) 12...h6 (12...e5 13.Qb3=) 13.Na4 (13.Qd2 Bg4=) 13...Qe7 (13...Rc1 14.Qc1 e5 15.Qd2=) 14.Qb3 (14.Bc3 Bb4=) 14...e5 15.Rc2 (15.b6 Bg4=) 15...d4 (15...Be6 16.d4 e4 17.Ne5=) 16.Rc8= (worse is 16.ed4 Be6 17.Rc4 Bc4 18.dc4 ed4 19.Nd4 Rfe8–/+) 16...Rc8 Black fights for the Initiative 17.Rc1 (17.ed4!? Be6 18.Qd1 Ba2 19.de5 Ne5 20.Qa1 Nf3 21.Bf3+=) 17...Rc1+= 18.Bc1 de3 19.Be3 Ng4 20.Bd2 Nc5 21.Nc5 Bc5 22.Ba5 (better is 22.Be1=) 22...Nf2–+ 23.Kf1 Ng4 24.Bd2 Nh2! 25.Ke1 Ng4 26.Kd1 e4 27.de4 Qe4 28.Qc4 Qb1 29.Qc1 Bc2 30.Ke1 Qa2 (30...Qa2 31.Kf1 Qb3–+) 0–1. Schuehler,Ernst – Pommerel,Wim, email 4AMM, 1998.

7.Nf3 e6 8.Nc3 Bd6 9.Qb3 (9.Be2 0–0=) 9...Nbd7+= 10.d4 Nb6 (10...0–0 11.Rc1+=) 11.a3 (11.Ba3 a4 12.Qb2 0–0+=) 11...a4 12.Qa2 (12.Qd1 0–0+=) 12...Ne4 (12...0–0 13.Rc1+=) 13.Be2 (13.Rc1 Nc3 14.Rc3 Rc8+=) 13...Rc8 14.Rc1 0–0 15.0–0 Nc3 (15...Bg4 16.Rc2+=) 16.Bc3 Qe7 17.Bb2 Nc4 Will a3 fall? (17...Bg4 18.Rfe1–/+) 18.Bc4+= dc4 19.Rc4 Bd3 20.Rc8 Rc8 21.Rc1 Rc1 22.Bc1 Bb5 23.Qb2 Qc7–/+ 24.Nd2 Ba6 25.g3 Qa5 26.Qc2+= h6 27.Kg2 Qd5 28.f3 Qb5 29.Qc8 Kh7 30.Qc2+= g6 31.Kh3 h5 32.e4 Be7 33.Qc7?? (better is 33.g4+=) 33…Qf1!? (33...Qf1 34.Nf1 Bf1#) 0–1. Jeschke,Holger – Nielsen,Gunnar, Schleswig Holstein–ch cand–A, 1997.

7.Nf3 g6 8.Be2 Bg7 9.0–0 0–0 10.a4 Nbd7 11.d4 Nb6 12.Nc3 Rc8 13.Qb3 Nc4 14.Bc4 Rc4 15.Ne5 Rb4 16.Qa3 Nd7 17.Nd5 Ne5 18.Nb4 ab4 19.Qb4 Nd3 20.Qb3 Nb2 21.Qb2 Qd7 22.Rfc1 Ra8 23.Qc3 Kf8 24.Qc7 Ke8 25.Qb6 Rc8 26.a5 Bd3 27.a6+– ba6 28.ba6 Ra8 29.a7 Be4 30.Qb8 Qd8 31.Qb5 Kf8 32.f3 Bd5 33.Rcb1 Rc8? 34.Qb8 e6? 35.Qc8!! Qc8 36.Rb8 Qe8 37.Re8 Ke8 38.a8Q Ba8 39.Ra8 Kd7 40.Ra7 Ke8 41.Kf2 e5 42.de5 Be5 43.f4 Bd6 44.Kf3 Bc5 45.Rb7 h5 46.e4 Be7 47.g4 hg4 48.Kg4 f6 49.h4 Kf7 50.f5 gf5 51.Kf5 Kf8 52.h5 Bd6 53.h6 Kg8 54.h7 Kh8 55.Kg6 f5 56.Rg7 fe4 57.Rg8# 1–0. Osmak,Iulija – Drogovoz,Irina, EYg10, Herceg Novi MNE, 2008.

7.f4 Nbd7 8.Nf3 h6 9.Nc3 e6 10.Rc1 Bc5 11.Be2 0–0 12.0–0 a4 13.Na4+/– Bd6 14.Nc3 Qb6 15.Nd4 Bh7 16.Ra1 Nc5 17.a4 Nd3 18.Bd3 Bd3= 19.Re1 Bf4 20.ef4?? Qd4–/+ 21.Kh1 Qf4–+ 22.Re3?? Bg6 23.Ne2 Qb4 24.Bf6=+ gf6 25.Rb3 Qd6 26.Rg3 Kh7 27.d4 Rg8 28.Qd2 Be4 29.Qf4? Qf4–+ 30.Nf4 Rg3 31.hg3 Rc8 32.a5–/+ 0–1. Meybohm,Dirk – Woldt, 1991.

7.Bf6 gf6 8.Nf3 Nd7 9.Nh4 Bg6 10.Nc3 e6 11.Ng6 (11.f4 f5 12.Nf3 Rc8=) 11...hg6 12.Rc1 Ba3 (12...Rc8 13.Be2=) 13.Rc2 Rc8 14.Na4 (14.Be2 Bb4=) 14...Nc5 (14...Rc2 15.Qc2 Bd6 16.h3=) 15.Nc5= Rc5 16.Rc5 Bc5 17.Be2 f5 18.0–0 (18.Qb3 b6=) 18...Bd6 Threatening mate: Bxh2 19.h3 (19.g3 Qg5 20.Qa4 Qh6=) 19...f6 (19...g5 20.Qa1 Rh7 21.Qb1=) 20.d4 Rh7 (20...g5 21.Re1=) 21.Qb1 (21.Qa4 Qb6=) 21...Qb6 22.Rc1 ½–½. Rosner,Dirk – Kruimer, CiF, 2000.

4.Bb2 Qb6

5.Nc3 cb5 6.Nb5 d5 (6...d6 7.Bf6 ef6 8.e3 Be7 9.d4 Qc6 10.Nf3+=) 7.e3 (7.Rb1 Nbd7 8.Qa4 Kd8 9.Nf3 Ng4 10.e3+/–) 7...Bd7 (7...Bg4 8.Qa4 Bd7 9.Bd4 Bb5 10.cb5+=) 8.Bd4 (8.Rc1 Na6 9.Bd4 Qd8 10.Bf6+/–) 8...Qd8 9.Bf6 (9.Rc1 Bb5 10.cb5+=) 9...ef6 (9...Bb5 10.Be7+=) 10.cd5 Na6 11.Qf3 Bc5 12.Qe4 Qe7 13.Qe7 Ke7 14.a3 Rhc8 (14...Bb5 15.Bb5 Nc7 16.Bc4+=) 15.d4+/– Bd6 16.Nd6 Kd6 17.Bd3 Kd5 18.Rb1 (18.Ne2 Kd6+/–) 18...Bc6 (18...Rc3 19.e4 Kd6= (19...Kd4? 20.Ba6 ba6 21.Ne2 Kc4 22.Nc3 Kc3 23.Ke2+–)) 19.Nf3+/– (19.Bh7?! g6 20.Ne2 Rh8 21.Nf4 Kd6+=) 19...Kd6 20.Nd2 (worse is 20.Bh7 g6+=) 20...Ke7 21.Nc4 Rg8 (better is 21...Rc7!?+–) 22.Na5 (22.Bh7?! Rh8 23.Bd3 Bg2+–) 1–0. Buss,Michael – Bedbur,Heinz, corr ICCF TT/40–13, 1992.

5.Nc3 d5 6.cd5 cd5 7.Rc1 (7.Nf3 Nbd7 8.d4 Qd6 9.e3 Nb6 10.Rc1=; 7.Qb3 e6 8.Nf3 Bd6 9.e3 0–0 10.Rc1=; 7.e3 Nbd7 8.d4 Qd6 9.Nf3 Nb6 10.Bd3=) 7...Nbd7 8.Nf3 e6 9.d4 Ne4 10.e3 +=.

5.e3 d5 6.Nc3 (6.Nf3 Bg4=) 6...Bf5 (6...e5 7.d4 ed4 8.ed4 cb5 9.Qe2 (worse is 9.Nd5 Nd5 10.cd5 Bb4 11.Ke2 0–0–/+) 9...Be7 10.c5=) 7.Na4 (7.Nf3 e6+=) 7...Qd8= 8.Qb3 (8.Bf6 ef6 9.c5 d4=) 8...Nbd7 9.Nf3 Bg6 (9...Rc8 10.Nh4 Bg4 11.h3=) 10.a3 (10.cd5 Nd5 11.Rc1 Rc8+=) 10...e6= 11.d4 dc4 (11...Be7 12.Be2=) 12.Bc4 Be7 13.0–0 Nd5 (13...0–0 14.Nc3=) 14.Ne5 (14.Rae1 0–0+=) 14...Ne5= 15.de5 0–0 16.Rad1 Qc7 (16...Qe8 17.b6+=) 17.Rc1 (17.b6 Qb8+=) 17...Rfd8 (17...Rac8 18.b6 Qb8 19.Rce1+=) 18.Bd5 (18.b6 Qb8 19.Rfe1+=) 18...ed5 (18...Rd5 19.Bd4 Qb8 20.bc6 bc6 21.Qc3=) 19.bc6 (better is 19.Bd4!?+/–) 19...bc6= 20.Bd4 Rdb8 21.Qc3 Ra6 22.Nc5 Bc5 23.Bc5 Qd7 24.Rfd1 Qg4 25.Bd6 Rd8 26.Bc7 Re8 27.Rd4= Qg5 28.Ba5 Qe5 29.Bb4= Qg5 30.Qe1 Be4 31.Qf1 Rea8 32.h4 Qh4–/+ 33.Rc5 Qf6 34.f3 Bf5 35.Qc1 Qg6 36.Kf2 h5 37.Qh1–/+ Qh6 38.Rc3 Rb8 39.Rh4 Bg6 40.Bc5?? Ra5 41.Rb4 Rb4 42.ab4?? Ra8 43.Qh4–/+ Bf5 44.Rc1 Ra2–+ 45.Kg1 Qg6 46.g3 Be6 47.Bd4 f6 48.e4 de4 49.fe4 Bg4 50.Re1 Qf7 51.Bf2 Qb3 52.e5 g5 53.Qh1–/+ Qc2 54.Qh2 fe5–+ 55.Re5 Be2?? 56.Rg5 Kf7+= 57.Be1 ½–½. De Visser,Arno – Cliteur, Hoogoven, 1996.

4.Bb2 d5

5.bc6 Nc6=+ 6.cd5 Nd5 7.Nf3 Bf5 8.d3 Bg4 9.Nbd2 e6 10.a3 f6 11.d4 f5 12.e3 Bd6 13.Bc4 0–0 14.h3 Bh5 15.0–0 Qe7 16.Qb3 a4 17.Qa2 Bf7 18.Rfc1 Rfd8 19.Bb5 Be8 20.Bd3 Bg6 21.Rab1 Na5 22.Rc2 Rac8 23.Rbc1 Rc2 24.Rc2 Kh8 25.Rc1 Bh5 26.Bb5 Be8 27.Be8 Qe8 28.Nc4 Nb3 29.Rc2 Be7 30.Nce5 Kg8 ½–½. Hebels,Alex (1970) – Newton,Hobart (1985), IECG, 1999.

5.cd5 cd5 6.Nf3 e6 =.

5.cd5 cd5 6.Nf3 Bf5 7.e3 Nbd7 8.Nc3 e6 9.Be2 Bd6 10.0–0 h5 11.Nh4 (11.Rc1+=) 11...Bg6 (11...Bh7 A) 12.Bh5? Bd3–+ (12...Nh5 13.Qh5 g6 14.Qg4+=); B) 12.d3=) 12.f4 (12.Ng6 fg6 13.Qc2+/–) 12...Bf5? (better is 12...Bh7!?+=) 13.Nf5+– ef5 14.Qc2 d4 15.ed4 Rc8 (15...g6!?+/–) 16.Qf5+– Rh6 (16...g6 17.Qh3+–) 17.Ne4 (17.Bf3 Qc7 18.Nd5 Qb8+–) 17...Ne4 18.Qe4 Re6 19.Qd3 Qh4 20.g3 Qf6? (20...Qh3 21.Bf3+–) 21.Bh5 g6 22.d5 Qb2 23.de6 Bc5 24.Kh1 Nf6 25.ef7 Kf8 26.Qg6 Rc7 27.Rae1 Qd2 28.Qh6# 1–0. Fournier,Frederic (1860) – Radina,Franck (1630), Ch Oise, 2004.

5.e3 dc4 6.Bc4 cb5 7.Bb5 Bd7 8.a4 Nc6 9.Nf3 e6 10.0–0 Bd6 11.Na3 0–0 12.Nc4 Bc7 13.Rc1 Nb4 14.Bf6 gf6 15.Nd4 f5 16.f4 Rc8 17.Qh5 Nd5 18.Rf3 Nf6 19.Qh4 Bb5 20.Nb5 Kh8? (better is 20...Ne4 21.Qh6 f6+/–) 21.Nb6!! Ne4 (21...Bb6 22.Rc8 Combination) 22.Qd8 Rcd8 (22...Rfd8?? 23.Nc8 (23.Rc7?! Rc7 24.Nc7 Rd6+–; 23.Nc7?! Nd2 24.Nc8 Nf3 25.gf3 Rc8+–) 23...Bb8 24.d4+–) 23.Rc7 (worse is 23.Nc7 Rd2 24.Nb5 Rfd8+–) 23...Nd2 24.Rh3 Ne4 25.Nd4 Rd6 26.Nd7 Rg8 (26...Rd8 27.Ne5 Kg8+–) 27.Ne5 Rg7 (27...Rf8 28.Ng6 Kg8 29.Nf8 Kf8 30.Rh7 Kg8 31.Rhf7 Nc5+–) 28.Rc8 Rg8 29.Nf7 Kg7 30.Nd6 Rc8 31.Ne6 (31.Ne6 Kg6 32.Nc8+–) 1–0. Janek – Terry, internet, 2016.

5.e3 Bf5 6.Nf3 e6 7.Be2 Be7 8.0–0 0–0 9.Qb3 (9.Nh4 Bb1 10.Rb1 dc4 11.Bc4 Ne8=) 9...a4+= 10.Qd1 a3 11.Bc1 (11.Bf6 Bf6 (worse is 11...gf6 12.cd5 cd5 13.Nc3+=) 12.d4 dc4 13.Bc4 c5+=) 11...dc4–/+ 12.Bc4 Bd3 13.Bd3 Qd3 14.bc6 Nc6 15.Nc3 Rfd8 16.Ne1?? (better is 16.Qb3 Rd7 17.Rb1–/+) 16...Qc3!!–+ 17.dc3 (17.Rb1 Qc4 18.Qc2 b5–+) 17...Rd1 18.Rb1 Na5 19.Nc2 Rf1 20.Kf1 Nd5 21.Bd2 Nc4 22.Be1 Nb2 23.Nd4 Rc8 24.c4 Rc4 25.Nb5 Nd3 26.Nd4 Ne1 27.Ke1 Nb4 28.Rb3 Nc2 29.Kd2 Nd4 30.ed4 Rd4 31.Ke3 Rd7 32.Rb5 g6 33.Ra5 Kg7 34.Ke4 Rd2 35.Ke3 Ra2 36.f4 b6 37.Ra7 Bc5 38.Kf3 Rb2 39.h3 a2 40.g4 Rf2 41.Kg3 Rc2 42.f5 gf5 43.gf5 ef5 44.h4 Bd4 45.h5 a1Q 46.h6 Kh6 47.Ra1 Ba1 48.Kf4 Rf2 49.Ke3 Rf1 50.Ke2 Rh1 51.Kf2 Bd4 52.Kg2 Rg1 53.Kf3 b5 54.Ke2 b4 55.Kd3 Bf6 56.Kc4 Rg4 57.Kb3 f4 58.Kc2 f3 59.Kd2 b3 60.Ke1 b2 61.Kf2 b1Q 62.Kf3 Qd1 63.Kf2 Bd4 0–1. orangutanb4 (1985) – dynamitedan (2085), kurnik, 2011.

5.e3 Bf5 6.Nf3 e6 7.Be2 h6 8.a3 Be7 9.d4 0–0 10.Nbd2 Ne4 11.0–0 Nd7 12.Ne4 Be4 13.Bd3 f5 14.bc6 bc6= 15.Qc2 Bf3 16.gf3 Bd6 17.f4 Qh4 18.f3 Rac8 19.Qg2 a4 20.Kh1 Rb8= 21.Rg1 Qe7 22.c5+= Bc7 23.Rae1 Rb3= 24.Bb1 Rfb8=+ 25.Re2 Qf7 26.e4 Bf4 27.ed5 cd5–/+ 28.Ba2 R3b5 29.c6 Nf8 30.Bb1 R5b6–+ 31.Rc2 Rc8 (31...Qc7 32.Qf2–+) 0–1. Nebe,Lutz – Bohn,Ulrich, Koblenz–ch, 1995.

5.e3 Bf5 6.Nf3 g6 7.d4 (7.cd5 cd5 8.Bf6 ef6+=) 7...Bg7= 8.Bd3 Bd3 9.Qd3 dc4 10.Qc4 a4 (10...Qd5 11.Qd5 Nd5 12.Na3=) 11.a3 Nd5 12.Nc3 Nc3 13.Bc3 Qd5 14.Qd5 cd5 15.Bb4 Nd7 16.Rc1 Kd8 (16...e5 17.de5 Ne5 18.Ne5 Be5 19.f4+/–) 17.Ke2 (17.Ng5 Rf8 18.Nh7 Rh8+–) 17...e5? (better is 17...Bf6+=) 18.de5+– b6 (18...Ne5 19.Rhd1 Nf3 20.Rd5 Ke8 21.Kf3+–) 19.Rhd1 Rc8 20.Rc8 (20.e6 fe6 21.Ng5 Rc1 22.Ne6 Ke8 23.Ng7 Kf7 24.Rc1 Nc5+–) 20...Kc8 21.Rd5 Re8 22.Bd6 Kb7 23.Kd3 h6 24.h4 Re6 25.Nd4 Ne5 26.Be5 Re5 27.Rd7 (27.Rd7 Kc8 28.Rf7+–) 1–0. Fournier,Frederic – Ruiz_Vidal,Pierre, Train France (FRA), 1999.

5.e3 Bg4 6.Be2 Be2 7.Ne2 (7.Qe2!? dc4 8.Bf6 gf6 9.Qc4=) 7...dc4–/+ 8.bc6 Nc6 9.Qa4 e6 10.Nd4 Qd7 11.Qc4 Nd4 12.Qd4 b5 13.Qd7 Kd7 14.Nc3 Rb8 15.f4 Bd6 16.Ne2 Rhc8 17.Rc1 a4 18.0–0 b4 19.d3 Bc5 20.Bd4 Bd4 21.Nd4 Nd5 (better is 21...Rc1 22.Rc1 b3 23.ab3 ab3–/+) 22.Rce1? (better is 22.Rc8 Rc8 23.e4–/+) 22...b3–+ 23.e4 Nc3 24.ab3 ab3 25.e5? (better is 25.Nf3–+) 25...b2 26.f5 b1Q 27.fe6 fe6 28.Rf7 Ke8 29.Ref1 Qf1! 30.Rf1 Rb1 31.Ne6 Ke7 32.Rb1 Nb1 33.Ng7 Nc3 34.Kf2 Kf7 35.Nh5 Ke6 36.d4 Rf8 37.Ke3–/+ Nd1 38.Ke4 Nf2 39.Ke3 Ng4 40.Ke4 Rf1 41.Nf4 Kd7 42.h3 Nf2 43.Kf5 Nd3 44.g3 Nf4 45.gf4 Kc6 46.Ke6 Rf4 47.d5 Kc7 48.Ke7 Rd4 49.d6 Kc6 50.e6 Rd6 51.Kf7 Rd1 52.e7 Rf1 53.Ke8 Kc7 54.h4 Re1 55.h5 Kd6 56.Kf7 Re7 57.Kf6 0–1. Reeves,A – Torman,Eric (2335), Detroit Clippert op, 1994. (known even as: Reeves,A – Tsemekhman,Vadim (2335), Detroit Clippert op, 1994)

5.e3 Bg4 6.Nf3 Nbd7 7.bc6 bc6 8.d4 e6 9.Nbd2 Rb8 10.Rb1? (better is 10.Bc3 Ne4 11.Ne4 de4 12.h3=) 10...Bf5–+ 11.c5 Qc7 (11...Qc7 12.Bc3 Bb1 13.Nb1 e5–+) 0–1. Echtwelzo – Goofy, playchess.de, 2003.

5.e3 cb5

6.cb5 d5 7.Qc2 Nbd7 8.a4 b6 9.Nf3 Bb7 10.d3 (10.Nc3!?=) 10...Rc8–/+ 11.Qd2 (11.Qd1!?–/+) 11...Bb4–+ 12.Bc3 Nc5 (12...0–0 13.Bb4 ab4 14.Be2–/+) 13.Qb2–/+ Bc3 (13...0–0 14.Be2 d4 15.Bb4 ab4 16.ed4 Bf3 17.gf3–/+) 14.Nc3 0–0 15.d4 Nce4 16.Ne4 Ne4 (16...de4!? 17.Nd2 Nd5–/+) 17.Bd3+= Nd6 (17...Qd6 18.0–0+=) 18.0–0= Nc4 19.Bc4 (better is 19.Qb3!?=) 19...dc4–/+ (19...Rc4?! 20.Ne5 Rc7 21.Rac1=) 20.Qe2 Qd5 (better is 20...c3!?–/+) 21.Rfc1= c3 (better is 21...Rc7 22.Rc3 f6=) 22.Rc2 (better is 22.Ra3+=) 22...Qb3–/+ 23.Ne5 Be4 24.Rcc1 Qb2 (24...Rfd8 25.Qg4 Bb7 26.Nc6 Bc6 27.bc6 Rc6 28.Qe4–+) 25.Qg4+= f5 26.Qd1 (26.Qh4 Rc7–/+) 26...c2 27.Qd2 Qb4 (27...Rc3 28.f3 Rfc8 29.fe4 Qa1 30.Ra1 c1R 31.Rc1 Rc1 32.Kf2–+) 28.Qe2 Qc3 29.Ra2 (29.Qe1!?–/+) 29...Qb3 30.Raa1 Qb2 31.f3 (31.Qd2!?=) 31...Bd5 (31...Qa1! 32.Ra1 c1Q 33.Rc1 Rc1 34.Kf2 Rc2 35.fe4 fe4 (35...Re2?! 36.Ke2 fe4 37.Nd7–/+) 36.Ke1 Re2 37.Ke2 Rc8–+) 32.Nd7+= Bb3 33.Nf8 (33.Nb6? Qa1 34.Ra1 c1Q 35.Rc1 Rc1 36.Kf2 Rc2 37.Qc2 Bc2–+) 33...Kf8 34.Qd2 Rc4 35.d5 Qe5 (35...ed5 36.Qd5 Ra4 37.Qd8 Kf7 38.Qc7 Kf6 39.Qd8 Kg6 40.Qb6 Kh5 41.g4 fg4 42.Qc5 Kg6 43.Qb6 Kg5 44.f4 Kh4=) 36.Qd3?? (better is 36.Ra3 Qc3 37.Qc3 Rc3 38.de6+=) 36...Rc3–+ 37.Qd4 Qd4 38.ed4 ed5 39.Kf2 (39.Ra3!? Rd3 40.Kf2–/+) 39...Rc4–+ 40.Ke3 Ba4 41.Kd3 (41.Ra3 Ke7–+) 41...Bb5 42.Rc2?? (42.f4–+) 42...Ra4 (42...Ra4 43.Kc3 Ra1–+) 0–1. Nikolic,Jovane – Li,Victor Hwa Chin (2020), ATC IVIRT, 2009.

6.cb5 Nbd7 7.Nf3 e6 8.a4 Bd6 9.Be2 0–0 10.0–0 b6 11.d3 Bb7 12.Nbd2 Qe7 13.Nd4 Rac8 14.h3 g6 15.N4b3 Kg7 16.e4 Kg8 17.ed5= Nd5 18.Bf3 Ne5=+ 19.Be4 Nf4–/+ 20.Nc1 f5–+ 21.Bb7 Qb7 22.Nf3 Nf3 23.Qf3 Qf3 24.gf3 Nh3 25.Kg2 Nf4 26.Kg1 Rc2 27.Bd4 Rc1! 28.Rac1 Ne2 29.Kg2 Nd4 30.Rc4 Ne2 31.d4 Nf4 32.Kh1 Rd8 33.Rc6 Nd5 34.Re1 Kf7 0–1. StephenHilton – Garfield85 (1945), internet, 2006.

6.cb5 Bg4 7.Be2 Be2 8.Ne2 =.

6.cb5 Bf5

7.Nf3 Nbd7 8.a4 e6 9.Be2= Rc8 10.Nc3 h6 11.0–0 Bd6 12.h3 Qe7 13.d4 0–0 14.Bd3 Bd3=+ 15.Qd3 Nb6 16.Rfc1 Nc4 17.Qe2 Rc7–/+ 18.b6 Rc6 19.Ne5 Ne5 20.de5 Be5 21.Ba3 Bd6 22.Bd6 Qd6 23.Nb5 Rc1 24.Rc1 Qb6 25.Qc2 Ne4 26.Qc7 Qc7 27.Rc7 b6 28.Rb7 Rc8 29.Rb6 Rc1 30.Kh2 Nf2 31.Ra6 Rh1 32.Kg3 Ne4 33.Kf4 Rf1 34.Ke5 f6 (35.Ke6 Nc5 36.Kd5 Na6–+) 0–1. Genne,Rene – Almada,Enrique (2285), Zuerich op2, 1994.

7.Nf3 Nbd7 8.Be2 Rc8 9.d3 Qb6 10.Nc3 e6 (10...e5 11.Rc1=) 11.Rc1 Rc7 12.0–0 Bd6 13.e4 (13.Nd4 Bg6=) 13...de4 14.de4 Ne4 15.Ne4 Be4 16.Bg7 Rg8 17.Bd4 Rc1 (17...Bc5 18.Bc5 Nc5 19.Qd4+=) 18.Qc1 Qc7 (18...Rg2 19.Kg2 Qd4 20.Rd1 Qg7 21.Kf1=) 19.Qe3 (19.Qc7 Bc7 20.Rc1 Kd8=) 19...Bh2+= 20.Kh1 (20.Nh2 Rg2 Theme: Double Attack) 20...Qf4 (20...Bf3 21.Bf3 Bf4 22.Qe2=) 21.Rc1= Ke7 22.Bc5 (22.Nh2? Bg2 23.Kg1 Bd5 24.Ng4 Qe3 (24...Rg4?! 25.Bg4 Qg4 26.Kf1+=) 25.Be3 h5–+ (25...Ba2 26.Kh2+=)) 22...Nc5 23.Qc5 Kf6 24.Rc4 (24.Nh2?? Rg2 25.Qd4 e5–+) ½–½. Boehnke,Hartmut (1970) – Holl,Andreas (2045), 2006.

7.Nf3 Nbd7 8.Be2 e6 9.0–0 (9.Nh4 Bb1 10.Rb1 Rc8=) 9...Bd6 (9...Rc8 10.d3=) 10.Nd4 Bg6 11.f4 0–0 12.d3 (12.Nc3 Nb6=) 12...e5 (12...Qe7 13.Qd2=) 13.fe5 (13.f5 ed4 14.Bd4 Qc7+=) 13...Be5 14.Nd2 Re8 15.Rf2 Nc5 16.Nf1 Qd7 17.Rb1 Ne6 (17...Rac8 18.a3+=) 18.Ne6= Qe6 19.Bf3 (19.Be5 Qe5 20.Qa4 Qc3–/+) 19...Bb2 (19...Rac8 20.Be5 Qe5 21.Rc2+=) 20.Rbb2= Rac8 21.Rbc2 h6 22.a4 Qd6 23.Rc8 Rc8 24.Rc2 Re8 25.Rc1 Qa3 26.Be2 Re7 27.Rc8 Kh7 28.Qc2 b6 29.Rc6 Re6 30.Rc7 Qb4 ½–½. Pommerel,Wim – De Ruiter,T, The Netherlands, 1998.

7.Bf6 ef6 8.Nc3 Bb4 =.

7.Bf6 gf6 8.Nc3 e6 =.

4.Bb2 e6

5.a4 d5 6.e3 +=.

5.a4 g6 6.e3 (6.e4 d5 7.e5 Ne4+=) 6...Bg7 (6...b6 7.Nf3+=) 7.Nf3 0–0 8.d4 d5 9.c5 b6 10.cb6 Qb6 11.Qc2 (11.Ba3 Re8+=) 11...Bb7 12.Ba3 Re8 (12...Rc8 13.Qc5 Qc5 14.Bc5+=) 13.Nbd2 (13.Bc5 Qd8+=) 13...Nbd7= 14.Be2 (14.Rb1 Rac8 15.Bc5 Nc5 16.dc5 cb5 17.cb6 Rc2+=) 14...Rac8 (14...Rec8 15.bc6 Rc6 16.Qb3+=) 15.Bc5 Nc5 (15...cb5 16.Rc1 Qd8 17.Bb5 Nc5 18.dc5=) 16.dc5 Qd8 17.Rc1 (17.b6 Rb8+=) 17...Nd7 (better is 17...cb5 18.ab5 Nd7+=) 18.0–0 (better is 18.b6!?+=) 18...cb5–/+ 19.Bb5 Rc5 20.Qb1 (20.Qd3 Re7–/+) 20...Rc1 (20...Re7 21.Nb3 Rc1 22.Rc1–/+) 21.Rc1+= Re7 22.Nb3 Ne5 23.Nfd4 Rc7 24.Rc7 Qc7 25.Qe1 Exerts pressure on the isolated pawn 25...Nc4 26.Bc4 Qc4 27.Na5= Qa6 28.Nb7 Qb7 29.Nb5 Qa6+= 30.Qd1 Qa5 31.g3 Qb4 32.Qc2 Bf8 33.Na7 Bc5+= 34.Nc6 Qb6 35.Ne5 Qd6 36.Nd3 Bb6 37.Qc8 Kg7 38.Qc3 d4 39.Qb2 e5 40.ed4 Bd4+= 41.Qb5 Qf6 42.Qd5= Qf5 43.Qb5 Qe4 44.a5? f6?? 45.Qd7 Kh6 46.Qh3 Kg5 47.Qh4 Qh4+= 48.gh4 Kh4 49.a6 e4 50.Nb4+= f5 51.Nc6 Bb6 52.a7 Ba7 53.Na7 h5 54.Nc6 g5 55.Ne7 f4 56.Nf5 Kg4 57.Nd4 e3 58.Kg2+/– The mate threat is h3 58...h4? 59.h3+– Kh5 60.f3?? Kg6= 61.Kf1 Kf6 62.Ke2 Ke5= 63.Nc2 Kd5 64.Kd3 Kc5 (64...Kc5 65.Ke4 Kc4=; better is 64...Kd6!?=). Semenko,Georg (1800) – Rossmann,Erich, 7sen.BayEM Schney, 1995.

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

5.e3 g6 6.a4 b6 7.Nf3 Bg7 8.g3 (8.d4 0–0+=) 8...Bb7 9.Bg2 cb5 10.cb5 0–0 11.0–0 d6 12.d3 Nd5 (12...Nbd7 13.Nc3=) 13.Bg7+= Kg7 14.Nfd2 Qf6 15.d4 e5 16.Nc4 Nd7 17.de5 Ne5 18.Nb6?? (better is 18.Ne5 Qe5 19.Ra3+/–) 18...Nb6+= 19.Bb7 Rad8?? (better is 19...Rab8 20.Bg2 Nf3 21.Bf3 Qa1 22.Qd6 Rfd8+=) 20.Nd2 d5 21.Rc1 Nec4 22.Nc4 dc4 23.Qf3 Qe6 24.Qc6 Rd6 25.Qe4 Qe4 26.Be4 Rb8 27.Ra1 c3 28.Rfc1+– Rc8 29.Bc6 Rcc6 30.bc6 Rc6 31.Ra3 Rc4 32.Rcc3 Ra4 33.Ra4 Na4 34.Ra3 Nc5 35.Ra5 Ne6 36.f4 h5 37.Kf2 f6 38.Ra7 Kh6 39.Ra6 (39.Ra6 Nc5 40.Ra8+–) 1–0. Hal1958 – Handkaes, playchess.de, 2004.

5.Nf3 cb5 6.cb5 d5 7.e3 =.

5.Nf3 d5 =.

5.Nf3 Be7 6.e3 0–0 7.Be2 d5 8.0–0 dc4 9.Bc4 cb5 10.Bb5 Bd7 11.Bd7 (11.Qe2 Bb5 12.Qb5 Qd7 13.Qd7 Nbd7=) 11...Nbd7 12.a4 Nd5 13.d4 Rc8 14.Na3 N7b6 15.Qb3 Nb4 Black is in command 16.Rfc1 (16.e4 Qd7=) 16...Qd5+= 17.Qd5 N6d5 18.Nb5 (18.Ne5 Nb6 19.Nb5 Rc1 20.Bc1 Rc8+=) 18...Nd3 19.Rcb1 Rc2 20.Ba3 Ba3 21.Ra3 (21.Na3 Rc7=) 21...N3b4 22.Nd6 Nc3 23.Rf1 b6+= 24.Ne5 f6 25.Nf3 Rd8–+ 26.Nb5 Nb5 27.ab5 Rdc8 28.Raa1 Nd5 29.h3 h6 30.e4 Nc3–+ 31.d5 ed5 32.ed5 Nd5 33.Rfd1 R2c5 34.Nd4 Nc3 35.Re1 Nb5 36.Ne6 R5c6 37.Nf4 Rd6 38.Re7 Rc7 39.Re8 Kf7 40.Rae1 Rcd7 41.Kh2 Nc7 42.Rb8 b5 43.Rb7 b4 44.Nh5 Na6 45.Rb5 Rd5 46.Rd5 Rd5 47.g4 b3 48.Nf4 Rd6 49.Ra1 b2 50.Rb1 Rd2 51.Kg3 a4 52.Nd3 Rd3 (52...Rd3 53.Kg2 a3–+) 0–1. Schmidbauer,Jens – Oberberger,H, North Bayern–ch, 2004.

5.e3 cb5

6.cb5 b6 7.f4 Bb7 8.Nf3 d5 9.Be2 Nbd7 10.Nc3 Bd6 11.0–0 Rc8 12.Rc1 0–0 13.Nd4 Rc7 14.Na4 Rc1 15.Qc1 Qa8 16.Nc6 Rc8 17.Bf6 gf6 (17...Nf6?? 18.Nb6 Qb8 19.Nc8 Qc8 20.Na5+–; 17...Bc6 18.bc6 gf6 19.cd7+–) 18.Qb1 f5 19.d4 Rc7 20.Ne5 Qd8 21.Rf3 Ne5 22.fe5 Ba3 23.Rf1 f6 24.Qb3 (24.Nb6?! Rc3 25.Na4 Re3=) 24...Bf8 25.e4 fe5 26.ef5 (26.Nb6? ed4 27.Nd5 ed5 (27...Bd5?! 28.ed5 Rc3 29.Qa4+=) 28.ef5 Qg5–+) 26...ef5 27.Qg3 Bg7 28.de5 Rc2 29.Bd1 Ra2 30.e6 Kh8 31.Re1 Bf6 32.e7 Be7 33.Re6 Bf8 (33...f4 34.Qf4 Kg7=) 34.Qe5+= Kg8 35.Re8 Qg5 36.Rf8 Kf8 37.Qb8 Bc8 38.Qc8 ½–½. Nemec,Zdenek (1915) – Kroes,Friso (2045), RA–2010–0–00103, 2010.

6.cb5 d5 7.Nf3 Nbd7 8.a4 b6 9.Be2 Bd6 10.0–0 0–0+= 11.d4 Re8 12.Ne5 Be5 13.de5+= Ne4 14.Qd4 f6 15.Bg4 Ne5=+ 16.Bh5 g6 17.f4 Nc4–/+ (18.Bf3 e5 19.fe5 fe5–+ (< 19...Nb2 20.Be4 Re5 21.Nd2+=); 17...gh5?! 18.fe5 f5 19.Nd2=) 0–1. Trokenheim,Marek – Nilsson,Stefan, corr SSKK 3–83, 1983.

6.cb5 d5 7.Nf3 Nbd7 8.Be2 =.

6.cb5 d5 7.Nf3 Be7 8.Be2 0–0 9.0–0 Nbd7 10.a4 Nc5 11.d4 Nce4 12.Nbd2 Bb4 13.Bd3 Qd6 14.Qc2 Nd2 15.Nd2 g6 (15...Bd7 16.Bc3=) 16.Nf3 Bd7 17.h3 Rfc8 18.Qb1 Ne8 19.e4 (19.Qd1 Rc7+=) 19...Ng7 (19...de4!? 20.Be4 Rab8=) 20.e5+= Qe7 21.Rc1 Nf5 22.Rc2 Rc2 23.Bc2 Rc8 24.Bf5 ef5 25.Qd3 Rc4 26.Qe3 Kg7 (26...Be6 27.Bc1+=) 27.Bc1+= Qf8 28.Qh6 Kg8 29.Qf8 Bf8 30.Be3 (30.Bd2 Bb4+=) 30...Kg7 (30...h6 31.Nd2 Rc3 32.h4=) 31.Nd2 Rc3 32.Kf1 Bb4 33.Ke2 b6 34.f4 (34.Nf3 Rc2 35.Kd1 Rb2+=) 34...h6 35.Ra2 Rc1 36.Nb3 Re1 (36...Rc4 37.Bd2=) 37.Kf2 Rb1 38.Nc1 Be7 39.Rc2 Kf8 40.Rc7 Ke8 41.Rc2 (41.Ne2 Bb4 42.Rb7 Ra1=) 41...Ra1 42.Na2 g5 43.Nc3 Be6 44.g4 f6 45.Rc1 (45.ef6 Bf6 46.gf5 Bf5=) 45...Rc1+= 46.Bc1 fg4 47.hg4 fe5 48.de5 Bg4 49.Nd5 Bd8 50.fg5 hg5 51.Be3 Bd1 ½–½. Koerner,S – Trauna, corr, 1973.

5.e3 Be7

6.Bd3 0–0 7.Qc2 g6 8.h4 d5 9.Na3 Nbd7 10.h5= Nh5 11.Rh5+= Ba3 12.Ba3 gh5 13.Bf8 Nf8= 14.Nf3 Bd7 15.Ke2 cb5 16.cb5= Qf6 17.Rh1 e5=+ 18.Rh5 h7 e4–/+ 19.Be4 de4 20.Qe4 Qg6?? 21.Rg5+– Bb5 22.Kd1 Qg5 23.Ng5 Bc6 24.Qf5 Be8 25.d4 h6 26.Ne4 Bc6 27.Nf6 Kg7 28.Nh5 Kg8 29.Nf6 (29...Kg7 30.Qe5+–; better is 29.Qf6 Ne6 30.Qh6+–) 1–0. Kuipers,Stefan – Schenkeveld,Daniel, NED–ch U12 Hengelo, 2002.

6.Bd3 d5 7.Nf3 =.

6.Nf3 0–0

7.Be2 d5 8.0–0 dc4 9.Nc3 a4 =.

7.Be2 d5 8.a4 cb5 9.cb5 b6 10.0–0 Bb7 11.d4 Nbd7 12.Nbd2 Rc8 13.Qb3 Bb4 14.Rac1 Qe7 15.Qa2 Ne4 16.Ne4 de4 17.Ne5 Ne5 18.de5 Bd5 19.Bc4 Bd2 20.Ba3 Bb4 21.Bb4+/– Qb4 22.Bd5 ed5 23.Qd5 Rc1 24.Rc1 Qa4 25.e6 fe6 26.Qe6 Kh8 27.Qb6 Qa2 28.Rf1 a4 29.Qc5 Kg8 30.b6 a3 31.b7 Qf7 32.Qc8! a2 33.Rc1 Qf2? 34.Kh1+– Qb2 35.Rf1 Qf6 36.Qf8 (36...Kf8 37.Rf6 gf6 38.b8Q Ke7 39.Qa7 Kf8 40.Qa2+–) 1–0. Bendig,Frank – Borrmann,Fritz, corr SOK–88–27, 1990.

7.Be2 d5 8.a4 cb5 9.cb5 b6 10.0–0 Bb7 11.d4 Nbd7 12.Nbd2 Rc8 13.Qb3 Rc7 14.Rac1+= Rc1 15.Rc1 Qb8 16.Ne1 Bd6 17.Nd3 Bh2–/+ 18.Kf1 Bd6 19.Nf3 Ng4 20.Ng5 Ndf6 21.Qd1 h5 22.Rc3 g6 23.Qd2 Ne4–/+ 24.Qd1?? Nc3 25.Bg4 Nd1 (26.Bd1 Qc7–+) 0–1. Monch – Muhle,Dirk, corr, 1972.

7.Be2 d5 8.a4 cb5 9.cb5 b6 10.0–0 Bb7 11.Bf6 Bf6 12.d4 Nd7 =.

7.Be2 d5 8.a4 cb5 9.cb5 b6 10.0–0 Nbd7 11.Nd4 Qc7 12.Na3 =.

7.Be2 d5 8.a4 dc4 9.0–0 =.

7.Be2 d5 8.a4 dc4 9.Bc4 cb5 10.ab5 =.

7.Be2 d5 8.Nc3 cb5 9.cb5 Nbd7 =.

4.Bb2 g6

5.e3 Bg7 6.Qc2 0–0 7.Nf3 cb5 8.cb5 d5 9.Be2 Bf5 10.d3 a4 11.0–0 Nbd7 12.Nd4+= Be6 13.Nc3 Qc7 14.Rac1 Rfc8 15.Qd2 Qd8 16.h3 Nb6 17.Ne6 fe6 18.Ba3 e5 19.f4 d4= 20.Ne4 de3=+ 21.Qe3 Nbd5 22.Rc8 Rc8 23.Nf6 Bf6–/+ 24.Qd2 ef4–+ 25.d4 g5 26.Bb2 Ne3–+ 27.Rb1?? Rc2 28.Qd3 Qd5 29.Bf3 Rg2 (30.Kh1 Qf3 31.Qb3 ab3 32.ab3 Qh3#) 0–1. Frenzel,Lothar – Borrmann,Fritz, corr KGP, 1985.

5.e4 Bg7 6.e5 Ne4 7.d3 Nc5 (7...Ng5 8.Qd2 f6 9.ef6 ef6 10.f4=) 8.d4+= Ne6 9.bc6 dc6 (worse is 9...Nc6 10.d5 Ne5 11.Bc3+/–) 10.Nf3 0–0 11.Nc3 f6 12.ef6 ef6 13.g3 (13.c5!?=) 13...Re8 14.Ne2 f5 15.Bg2 c5 16.0–0 cd4 (16...Nc6!?+=) 17.Nfd4 Nd4 (17...Nc6!? 18.Nc6 Qd1 19.Rfd1 Bb2=) 18.Nd4+= Bd4 19.Bd5 (19.Bd4!? Nc6 20.Bc3+=) 19...Qd5= 20.cd5 Bb2 21.Rb1 Bg7 22.Re1 Rd8 23.Qc2 Na6 24.Qc4 Bf6 (better is 24...Bf8+/–) 25.d6 (better is 25.Rb6 Bg5 26.f4 Bf4 27.d6 Kh8 28.Re7 Be5 29.Qf7 Bd4 30.Kg2 Bb6 31.Qh7) 25...Kg7= 26.Rb6 Nb4 27.a3 Nc6 28.Rd1 Ne5 29.Qd5 Nc6 30.Qc4 Ne5 31.Qd5 Nc6 ½–½. Wall,William Dale – Chase,Stephen, postal, 1989.

5.Nf3 Bg7 6.e3 0–0 7.Bd3 d5 8.Qc2 dc4 9.Bc4 cb5 10.Bb5 Bf5 11.Qb3 Nc6 12.0–0 Rc8 13.Rc1 Qb6 14.Nc3 Na7 15.Bc4 Qb3 16.ab3 Nc6 17.d4 e6 18.Nh4 Be4 19.Ne4 Ne4 20.Bb5 Na7 (20...Nd2!? 21.Rc3 Rfd8=) 21.Rc8+/– (21.Ra5 Rc1 22.Bc1 Nb5 23.Rb5 Ra8 24.Rb7 Ra1–/+) 21...Rc8 22.Bd3 (worse is 22.Ra5 Nb5 23.Rb5 Rc2–/+) 22...Nc5 23.dc5 Bb2 24.Ra5 Nc6 25.Rb5 Rc7 26.Nf3 ½–½. Pisar,Juraj (1655) – Danada,Ondrej (1810), SVK–chT2A, 2008.

5.g3 Bg7 6.Bg2 0–0 7.Nf3 d5 8.bc6 dc4 9.cb7 Bb7 10.0–0 Na6 11.Na3 Rc8 12.Nb5 Nb4 13.a3 Nbd5 14.Rc1 a4 (14...Qb6 15.Rb1 Qe6=) 15.Nfd4?? (15.Qa4 Nb6 16.Qd1 g5+/–) 15...Qb6 (15...e5 16.Na7 Rc5 17.Ndb5+=) 16.Ba1?? (16.Qa4 e5 17.Qa7+=) 16...e5–/+ 17.Rb1 (17.Qa4 ed4 18.Bd4 Qe6–/+) 17...ed4–+ 18.Nd4 Qc7 19.Nb5 Qd7–+ 20.Nd4 Rfd8 21.e4 Ne7 22.Rb7 Qb7 23.e5 Nfd5 24.e6 f5 25.Qa4 Qb6 26.Nb5 Ba1 27.Ra1 Ra8 28.Qd1 Qb5 29.Rb1 Qc5 30.Rb7 Ra3 31.h4 Rg3 32.Qe2 Nf4 33.Qf3 Rg2 34.Qg2–+ Ng2 35.Kg2 Qc6 (35...Qc6 36.Kf1 Qb7 37.Kg1 Rd4 38.d3 Rg4 39.Kf1 Qb1 40.Ke2 Qd3 41.Ke1 Re4; 35...Rd2 36.Rb5 Qf2 37.Kh3 Qe3) 0–1. Salvatore – kehrsam, ChessWorld.net, 2006.

4.e3 cb5

5.cb5 d5 6.Bb2 Bf5 7.Nf3 (7.Bf6 gf6 8.Nc3 e6=) 7...Nbd7 8.Be2 e6 (8...Rc8 9.0–0=) 9.0–0 (9.Nh4 Bb1 10.Rb1 Rc8=) 9...Bd6 (9...Rc8 10.d3=) 10.Nc3 (10.Nd4 Bg6=) 10...0–0 (10...e5 11.d4 e4 12.Nd2=) 11.Nh4+= Bg6 12.Ng6 (12.Rc1 Rc8=) 12...hg6+= 13.f4 (13.Rc1 Rc8+=) 13...Qe7 14.Bf3 Rfc8 (14...Rac8=) 15.d3 (15.Rc1 Nb6=) 15...Rc7 (15...Ba3 16.Ba3 Qa3 17.Na4+=) 16.Rc1 (16.Qd2 Rac8=) 16...Rac8 17.Qd2 (17.Na4 Rc1 18.Bc1 e5=) 17...Bb4+= 18.a3 Ba3–/+ 19.Ne2 Bb2 20.Qb2 Rc1 21.Rc1 Rc1 22.Nc1 e5 23.Kf2 a4 24.Qc3 e4–+ 25.de4 de4 26.Be2 Nd5 27.Qd2 Qc5 28.Na2 N7b6 29.Qc1 Qc1 30.Nc1 a3 31.Na2 Na4 32.Bc4 Ndc3 33.Nc3 Nc3 34.Ke1 a2 35.Ba2 Na2 (35...Na2 36.Kd2 f5–+) 0–1. Malmstroem,Jan – Pommerel,Wim, email 4AMM–05, 1997.

5.cb5 d5 6.Nf3 =.

4.e3 g6

5.Bb2 Bg7 6.Qc2 (6.Nc3 0–0=) 6...0–0 7.Nf3 cb5 8.cb5 d5 9.Be2 Bf5 10.d3 a4 (10...Qd6 11.Nc3=) 11.0–0 Nbd7 (11...Qa5 12.Nd4=) 12.Nd4 (12.Rc1 Nb6=) 12...Be6 (12...Bg4 13.f3 Bh5 14.Qd2=) 13.Nc3 Qc7 (13...a3 14.Bc1+=) 14.Rac1 (14.Ba3 Rfc8 15.Rac1 Qd8+=) 14...Rfc8 (14...a3 15.Ba1 Qd6 16.Nd1+=) 15.Qd2 (15.Ne6 fe6 16.a3 e5+=) 15...Qd8 (15...Qd6 16.f4=) 16.h3 (16.Ne6 fe6 17.a3 Nc5+=) 16...Nb6 (16...Nc5 17.Ba3=) 17.Ne6+= fe6 Black gets strong initiative 18.Ba3 e5 19.f4 (19.Qb2!?+=) 19...d4+= 20.Ne4 de3 21.Qe3 Nbd5 22.Rc8 Rc8 23.Nf6 Bf6–/+ 24.Qd2 ef4 25.d4 g5 26.Bb2? Ne3–+ 27.Rb1?? Rc2 28.Qd3 Qd5 29.Bf3 Rg2 (29...Rg2 30.Kh1 Qf3 31.Qb3 ab3 32.ab3 Qh3) 0–1. Frenzel,Lothar – Borrmann,Fritz, corr SOK–90–56, 1990.

5.Nc3 Bg7 6.Bb2 0–0 7.Nf3 d6 8.h4 Bg4 9.Be2 Nbd7 10.Ng5 Be2 11.Qe2 e5 12.0–0–0 (12.Ba3!?=) 12...cb5 13.Nb5 Nc5 14.d4 ed4 15.Bd4 Nce4 16.f3?? (better is 16.Bf6 Nf6 17.Nd6+=) 16...Ng3–+ 17.Qe1 Nh1 18.Qh1 Rc8 19.Qf1 h6 20.Ne4 Ne4 21.Bg7 Ng3 22.Qd3 (22.Qe1 Qh4 23.Rd4 Rc4 24.Kd2 Rd4 25.Bd4–+) 22...Kg7 23.Nd6 Rb8 24.Qc3 Kh7 25.Qa5 (25.Kb2–+) 25…Qa5 0–1. combijack (1910) – belvedere (1795), gameknot.com, 2013.

4.Nf3 d5

5.cd5 cd5 6.e3 Bf5 7.Ba3 Nbd7 8.Nc3 e5 9.Bf8 Kf8 10.Be2 Qe7 (10...Rc8 11.Rc1+=) 11.0–0+= Rc8 12.Rc1 b6 13.Qb3 (13.d4 e4 14.Nd2 Qb4+/–) 13...Nc5 Black plans e4 14.Qb2 (14.Nd5 Qe6 15.Nb6 Qb6+= (worse is 15...Nb3 16.Rc8 Ne8 17.Rc6+/–)) 14...e4 15.Nd4 Bd7 16.Nb3 Qd6 17.Nc5 Rc5 18.Na4 Rc1 19.Rc1 Ke7 20.d3 ed3 21.Bd3 Rb8 22.h3 Kf8 23.Qd4 Kg8 24.Rd1 Be6 25.Be2 Qc7 26.Bf3 Qc4 27.Nc3 Increasing the pressure on the isolated pawn on d5 27...Rc8 28.Nd5 Bd5 29.Bd5 Qb5 30.Bb7 Rb8 31.Ba6 Qc6 32.Bc4 b5 33.Qa7 Rf8 34.Bd3 Qc3 35.Qb6 Qa3+= 36.Qb5 Qa2 37.e4 h6 38.e5 Nh7 39.h4 Qe6 40.Bc4 Qg4 41.Rd7 Qf5 42.Ra7 Qf4 43.g3+– Qf5 44.Qa5 Kh8 45.Qd5 1–0. Fournier,Frederic – Robeson,Christian, chess.com, 2009.

5.cd5 Nd5 =.

5.e3 dc4 6.Bc4 cb5 7.Bb5 Bd7 =.

3.c4 d5

4.ba6 Na6 5.cd5 =+.

4.cd5 Nd5 5.d4 Bf5 =+.

4.e3 e5 5.cd5 Nd5 6.d4 Bb4 7.Bd2 ed4 8.Bb4 Nb4 9.a3 =+.

4.e3 g6

5.Bb2 Be6 6.cd5 Bd5 7.Nc3 =.

5.Bb2 Bg7 6.d4 0–0 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d5 6.d4 a5 7.b5).

5.Bb2 Bg7 6.cd5 0–0 =.

5.Bb2 Bg7 6.Nf3 0–0 7.Nc3 Qd6 8.Be2 (8.Nd5 Nd5 9.Bg7 Kg7 10.cd5 Qd5+=) 8...Bg4 (8...dc4 9.Bc4 Be6 10.Be6 Qe6 11.d4=) 9.0–0 (9.Nd5 Nd5 10.Bg7 Kg7 11.cd5 Qd5+=) 9...b6 (9...dc4!? 10.Bc4 Qb4=) 10.h3 (10.Nd5 Nd5 11.Bg7 Kg7 12.cd5 Qd5+/–) 10...Bf3 11.Bf3 (worse is 11.gf3 d4 12.ed4 Qd4+=) 11...e6 12.a4 (better is 12.cd5 ed5 13.Qb3+/–) 12...Ra7? (better is 12...c6+=) 13.Ba3+– c5 14.bc6! Qc6 (14...Nc6 15.Bd6 Decoy; 14...Qc6 15.Bf8 Pinning (15.Bf8 Deflection)) 15.Bf8 Kf8 16.Rc1 (better is 16.cd5 ed5 17.Rc1 Qd7+–) 16...Rb7 (16...Rd7 17.cd5 Qd6 18.Nb5+–) 17.Qe2 (better is 17.cd5 Qd6 18.Nb5 Qd8 19.de6 Re7 20.ef7 Na6+–) 17...Na6 18.cd5 Nd5 19.Nd5 ed5 20.Rc6 (20.Rc6 Nb4 21.Rc8 Ke7 22.d4+–) 1–0. wlittle (2115) – rcroes (2150), net–chess.com, 2004.

5.cd5 Bf5 =.

3.c4 e6

4.a4 Bb4 5.Qb3 0–0 6.g3 d5 7.Bg2 dc4 8.Qc4 e5 9.Nf3 e4 10.Ne5 Be6 11.Qc2 c6! 12.0–0 (12.bc6 Nc6 Decoy) 12...cb5 13.Be4 Nbd7 14.Bb7 (better is 14.Nd7!? Qd7 15.Bg2 ba4 16.Ra4–/+) 14...Ne5–+ 15.Ba8 Qa8 16.Bb2 (16.ab5 Bh3 17.f3 Bf1 18.Kf1 Nf3–+) 16...Bh3 17.f3 Bf1 18.Be5 (18.Kf1 Qd5 19.ab5 Qb5 20.Qf5–+) 18...Be2 19.Bf6 (19.Nc3 Qf3 20.Nb5–+) 19...Qf3 20.Nc3 Bd3 21.Qc1 Bc5 22.Bd4 Bd4 0–1. 321sacrifice419 – PeterRs, ChessWorld.net, 2016.

4.d4 Ne4 =.

4.e3 e5 5.Bb2 d6 6.d4 =.

4.Nf3 d5 5.e3 Be7 6.Be2 0–0 7.0–0 c5 8.Bb2 Ne4 9.d3 Nf6 10.Qc2 Nbd7 11.Nbd2 b6 12.g3 Bb7 13.e4 d4 14.Rae1 Ne8 15.Bc1 f5 16.ef5 ef5 17.h3 Bd6 18.Bd1 Qc7 (18...Nc7 19.Kh2+=) 19.Kh2 g6 20.Ng5 Ng7 21.Bf3 Rae8 22.Qd1 Ne5 23.Bb7 Qb7 24.Ndf3 f4 25.g4 Ne6 26.Ne4 (worse is 26.Ne5 Ng5 27.h4 Re5 28.hg5 Rg5–+) 26...Bb8 27.Ne5 Be5 28.f3 Qc7 29.Kg2 Kg7 30.a4 Bf6 31.Re2 Ng5 32.Rfe1 Ne4 33.Re4 Re4 34.Re4 g5 35.h4 h6 36.Qe1 Rf7 37.h5 Re7 ½–½. Melich,Jindrich (2070) – Haspl,Miroslav (2105), CZE–chT2c, 2005.

4.a3 d5

5.d4 dc4 6.e3 Bd6 =.

5.e3 c5 6.Nf3 =.

5.e3 e5 6.d4 ed4 7.Qd4 =.

5.e3 Be7 6.Nf3 0–0 7.Bb2 c5 (7...Nbd7 8.d4=) 8.Qc2 (8.d4 cd4 9.Bd4 dc4 10.Bc4 Nbd7=) 8...b6 9.d3 dc4 (9...Bd6 10.Be2=) 10.dc4 Bb7 11.Nbd2 Nbd7 12.Bd3 Qc7 13.Rg1 (13.0–0 h6+=) 13...Bd6 14.0–0–0 (14.g4 A) worse is 14...Bh2 15.Rh1+/– (15.Nh2?! Qh2 16.0–0–0 h6=); B) 14...Ne5 15.Be5 Be5+=) 14...Ne5 (14...Be5 15.g4 Bb2 16.Qb2=) 15.Be5+= White fights for the Initiative 15...Be5 16.g4 h6 (16...g6 17.Ne5 Qe5 18.g5=) 17.h4 (17.g5 hg5 18.Rg5 Bd6+=) 17...Bh2 (17...Nd7!?+=) 18.Rg2 (18.Nh2 Qh2 19.g5 hg5 20.hg5 Nd7+/–) 18...Bd6 19.g5 Ne8 (better is 19...hg5!? 20.hg5 Nd7 21.Bh7 Kh8+–) 20.gh6+– f5 21.Rdg1 Rf7 22.h5 Kh8 23.Qc3 e5 24.hg7 Ng7 25.Rg6 Raf8 26.Rh6 Kg8 27.Nh4 Rd8 28.Ng6 Rf6 29.f4 Re8 30.e4 Kf7 31.ef5 Bf8 32.Ne4 Rg6 33.hg6 Ke7 34.f6 Kd8 35.Rh8 Be4 36.Be4 Bd6 37.fg7 Qg7 38.Qd2 Rh8 39.Qd6 Kc8 Black threatens to counter with Qd7 40.Qc6 (40.Qc6 Kb8 41.Qa8 Kc7 42.Qb7 Kd6 43.Rd1 Ke6 44.Qc6 Ke7 45.Rd7 Ke8 46.Qc8#; 40.Rd1 Qc7 41.g7 Rd8 42.Bf5 Kb7 43.Qd8 Qd8 44.Rd8 e4 45.Rd7 Kb8 46.g8Q#) 1–0. Taulien,H – Brueske,T, remoteschach.de, 2003.

5.e3 Be7 6.Nf3 0–0 7.Nc3 Nbd7 8.d4 dc4 9.Bc4+= Nb6 10.Bb3 (10.Bd3 Nfd5 11.Bd2 Nc3 12.Bc3 Nd5+=) 10...a4 11.Ba2 Nbd5 12.Na4 Bd7 13.Bc4 c6 14.Rb1?? (better is 14.b6+=) 14...Qa5–+ 15.Bd2 Qa4 16.Rb3 (16.Qa4 Ra4 17.Ne5–+) 16...Qc4 17.Ne5 Qa4 18.0–0 (18.Nd7 Nd7 19.bc6 Qc6–+) 18...c5 19.dc5 (19.Rb1 Qa3 20.dc5 Bc5–+) 19...Bb5 20.f3 (20.Re1 Ne4 21.Rb2 Bc5 22.Qa4 Ba4–+) 20...Bf1 21.Kf1 Bc5 22.Kf2 Bd6 23.Nd3 Qh4 24.Kg1 Qh2 25.Kf1 Qh1 26.Ke2 Qg2 27.Nf2 Nh5 28.Be1 Ng3 29.Kd2 Ne3! 30.Re3 Bf4 31.Kc2 Be3 32.Kb1 Rfd8 33.Nd3 Ra3 34.Qc2 Ra1! 35.Kb2 Ra2! 36.Kb3 Qc2 37.Kb4 Rd4 (37...Rd4 38.Kb5 Qc6; 37...Ra4 38.Kb5 Qc6) 0–1. Tortoza,Carlos – Valverde,Mario (2055), CiF, 2006.

5.e3 Be7 6.Nf3 0–0 7.Nc3 Nbd7 8.d4 c5 9.cd5 ed5 10.dc5 Nc5 11.Be2 Nce4 12.Bb2 Nf2 (12...Be6!?=) 13.Kf2+/– Ng4 14.Kg1 Ne3 15.Qc1 d4 (15...Nf5 16.Na4+/–) 16.Nd1 (16.Ne4 Re8 17.Bd4 Nf5+/–) 16...d3 (16...Bf6!?+/–) 17.Bd3! Ng2 (17...Qd3 Decoy to d3 18.Qe3 A double attack) 18.Bh7 (18.Kg2?! Qd3 19.Qc3 Qg6 20.Kf2 Bf6+=) 18...Kh7 19.Kg2 Bf5 (19...Qd3 20.Qb1 Bf5 21.Qd3 Bd3 22.Re1+–) 20.Rf1 (20.Qf4 Qd3+–) 20...Qd7 (20...Qd6 21.Nf2+–) 21.Rf2 Rac8 22.Qf4 Bh3 23.Kh1 Qb5?? 24.Nc3 Qh5?? 25.Qe4 Bf5 26.Qe7 (26.Qe7 f6 27.Nd4+–) 1–0. Escher,H – Goeke,B, Frankfurt, 1999.

5.e3 Be7 6.Nf3 0–0 7.d4 c6 =.

4.e3 d5

5.Nf3 Bb4 6.a3 Be7 7.d4 =.

5.Nf3 Bb4 6.Be2 0–0 (6...dc4 7.Bc4 Nbd7 8.0–0=) 7.0–0 dc4 8.Bc4 b6 (8...c6 9.Ba3=) 9.Bb2 (9.d4 Bb7=) 9...Bb7 10.d4 (10.Nc3 Nbd7=) 10...c6 11.Ba3 Nbd7 (11...cb5 12.Bb5 Qd5 13.Bd3=) 12.bc6 Bc6 13.Bb4 ab4 14.Nbd2 Ba4 (14...Qe7 15.Qb3+=) 15.Qb1 Qe7 16.Rc1 b5 (16...Rfc8 17.Bd3+=) 17.Bd3 Rfc8 18.Qb2 (18.Ne4 Nd5+=) 18...Nd5 19.Ne4 (19.Be4 N7b6+=) 19...f5 20.Ng3 Rc3 21.Qd2 N7b6 (21...Ra3 22.Rab1+=) 22.Ne5 Rac8 23.Ne2 Qc7 24.Nc3+/– bc3 25.Qe2 b4 26.Ba6 Ra8 27.Bb5 Qa7 28.h3 Qa5 29.Bd3 Be8 30.Qf3 b3 31.ab3+– Qa1 32.Ra1 Ra1 33.Kh2 Ra2 34.e4 fe4 35.Qe4 g6 36.h4 Rf2 37.Ng4 Rf4 38.Qe6 Bf7 39.Nh6 Kg7 40.Nf7 Rf7 41.h5 Re7 42.Qg4 Ne3 43.h6 Kg8 Threatening mate... how? 1–0. Ganesan – Domenche Redondo, corr, 1997.

5.Nf3 Bd6 6.Be2 (6.d4 b6=) 6...0–0 (6...dc4 7.Na3=) 7.0–0 (7.d4 dc4 8.Bc4 Nbd7=) 7...Nbd7 (7...dc4 8.Bc4 Nbd7 9.d4=) 8.Nc3 (8.cd5 Nd5 9.d4 N7f6=) 8...dc4 9.Bc4 Nb6 10.Be2 a4 (10...e5 11.d4 e4 12.Ng5=) 11.e4 (11.d4 Bd7=) 11...e5 12.Bd3 (12.d4 Bb4 13.Nb1 ed4+=) 12...Bc5+= 13.Bc2 Bg4 14.h3 Bf3 (14...Bh5 15.g4 Bg6 16.d3+=) 15.Qf3+= Qd4 (15...Qd6 16.Qg3+=) 16.Qd3 (16.Rd1 a3+=) 16...Rfd8 17.Qe2 Qd6 (17...Rac8 18.Rb1+=) 18.Rb1 Bd4 19.Nd1 (19.Qf3 Qe6+=) 19...Qe6–/+ 20.a3 g6 (20...Qa2 21.d3–/+) 21.Bb2 (21.Qf3 c6+=) 21...Nh5–/+ 22.Bd4 (22.Qf3!?–/+) 22...Rd4 (22...ed4?! 23.Nb2+=) 23.Nc3 (23.Nb2 Nf4 24.Qe3 Nc4 25.Nc4 Qc4–/+) 23...Nf4–+ 24.Qd1 (24.Qg4 Rd2 25.Qe6 Ne6–+) 24...Nc4 (24...Qe7 25.Kh1–+) 25.d3 (25.Rb4–+) 25...Na3 26.Ra1 Nc2 27.Qc2 a3 28.Rfd1 Qd6 29.f3 Rd3 30.Rd3 Qd3 31.Qd3 Nd3 32.Nb1 a2 33.Nc3 Nb4 34.Kf2 Ra3 (34...Ra3 35.Na2 Ra2 36.Ra2 Na2–+) 0–1. Hasler,Ueli – Valverde,Mario (1995), CiF, 2005.

3.e3 g6

4.a4 Bg7 5.Bb2 0–0 6.Be2 d6 7.Nf3 e5 8.d3 Nbd7 9.c4 Re8 10.0–0 Qe7 11.Nbd2 Nc5 12.Qc2 Bg4 13.h3 Bc8 14.Rfe1 e4 15.de4 Nce4 16.Rad1 Nd2 17.Nd2+= Bf5 18.Qb3 Ne4 19.Bg7+= Kg7 20.Bf3 Nd2 21.Rd2+/– Be4 22.Be4 Qe4 23.Qc3 Qe5+= 24.Qe5 de5 25.Red1 Re7 26.Rd7 Rae8 27.e4 Kf6 28.c5 Ke6?? 29.c6 b6 30.R1d5 Rd7 31.Rd7 Re7 32.Rd5 f5 33.f3 fe4 34.fe4 Rf7 35.g3 h5 36.Kg2+= g5 37.Rd2 g4 38.hg4 hg4 39.Rd3 Rf6 40.Rd8 Rf7 41.Rg8 Kd6 42.Rg4 Kc5 43.Rg5 Kd4 44.Rf5+/– Rg7 45.Kf3 Re7 46.g4+– Kc5 47.g5 Kb4 48.g6 Rg7 49.Re5?? Ka4?? 50.Rg5+– Kb4 51.Kf4 a4 52.Kf5 a3 53.Kf6 (53...a2 54.Rg1+–) 1–0. kostovist (1640) – StephenHilton (1605), internet, 2006.

4.d4 d5 =.

4.Nf3 d5 =.

4.Bb2 Bg7

5.c4 0–0 6.d4 d6 7.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

5.c4 d6 6.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 TESTJ400 5.e3 a5 6.b5 d6).

5.c4 d6 6.f4 0–0 7.Be2 Nbd7 8.Nf3 e5 9.fe5 Ng4 10.0–0 Nde5 11.Ne5 Ne5 12.d4 Nd7 13.Bf3 Rb8 14.Qa4 Qg5 15.Bc1 Nb6 16.Qb3 Be6 17.Na3 c6 18.Rb1 (18.Qc3!?=) 18...Nc4+= 19.Nc4 cb5 20.d5 bc4 21.Qc4 Rfc8 22.Qd3 Bg4 23.e4 Qh5 24.Bf4 Rc3 25.Bg4 Qg4 26.Qd2 Rbc8 27.Rbc1 Rc1 28.Rc1 Rc1 29.Qc1 Bd4 30.Kh1 h5 31.h3 Qd7 32.Qd2 Be5 33.Be5 de5 34.Qa5 f5 35.Qb6 Kf7 36.ef5 gf5 37.Qb3 Kf6 38.Qf3 e4 39.Qc3 Kg5 40.Qe5 Kg6 41.Kg1 e3 42.d6 Kf7 43.Qd5 Kf6 44.Kf1 Qf7 45.Qd4+/– Ke6 46.Ke2 f4?? 47.Qc4+– Kf6 48.Qf4 (48.Qf4 Ke6 49.Qf7 Kf7 50.Ke3+–) 1–0. Lehmann,Frank – Gauer,Jac (1970), ZDMI Open, Dresden GER, 2010.

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

5.Nf3 0–0 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 a5 6.b5).

4.Nf3 Bg7

5.Bb2 0–0 6.Be2 =.

5.Bb2 d6 6.a4 0–0 7.Be2 c5 8.c4 b6 (8...d5 9.0–0=) 9.d3 (9.0–0 Qc7=) 9...Bb7 (9...Nbd7 10.0–0=) 10.Nbd2 Nbd7 11.Qb3 (11.0–0 Qc7=) 11...e6 12.Rc1 Qe7 13.0–0 Rfe8 (13...Rae8 14.e4=) 14.Rfd1 e5 15.Ne1 (15.Ng5 Red8=) 15...Nf8 (15...Rad8 16.Bf3 Bf3 17.Nef3=) 16.Bf3+= Ne6 17.Bb7 Qb7 18.Nef3 Rad8 19.Qc2 Re7 20.Nb3 Nd7 21.Bc3 Qc7 22.Qd2 Ra8 23.Qe1 f5 24.h4 h6 25.Rc2 Nf6 26.Kf1 Ng4 27.Ke2? Nd4!–+ 28.Bd4 ed4 29.Kd2 de3 30.fe3 Rae8 31.e4 fe4 32.Qg3 ed3 33.Kd3 Ne3 34.Rcd2 Nd1 35.Rd1 Re3 (35...Re3 36.Kc2 Rc3 37.Kd2 Qf7–+) 0–1. Jamieson,Ian (2060) – Stevenson,James (2085), SCO–ch, 2005.

5.d4 0–0 =.

3.Nf3 b6

4.Ba3 A) 4...d5 5.e3 (5.d4 c6 6.e3 Bg4 7.h3 Bd7 8.Nc3+=) 5...Bg4 6.d4 Nbd7 7.c4 e5 8.Bf8+=; B) 4...g6 5.Bb2 (5.d4 Bg7 6.e3 d6 7.Bd3 c5 8.0–0=; 5.e3 Bg7 6.d4 d6 7.Bd3 0–0 8.0–0=) 5...Bb7 6.Bf6 ef6 7.e3 a4 8.Bc4+=; C) 4...c5 5.e3 (5.d4 cd4 6.Qd4 d5 7.e3 Nbd7 8.Bd3=; 5.bc6 Nc6 6.Nc3 Ba6 7.e4 Bf1 8.Rf1=; 5.Bb2 d5 6.e3 e6 7.Be2 Bd6 8.0–0=) 5...d6 6.d4 Nbd7 7.dc5 dc5 8.Bb2+=.

4.Bb2 Bb7 5.Nc3 (5.e3 e6 6.Be2 Be7 7.0–0 0–0 8.c4=; 5.a3 e6 6.e3 Be7 7.Be2 0–0 8.0–0=) 5...a4 6.a3 e6 7.e3 Be7 8.Be2 =.

4.Bb2 e6 5.c4 d5 6.e3 Bd6 7.Nc3 Bb7 8.Nd4 0–0 9.Qf3 Re8 10.Qh3 c5 11.bc6 Nc6 12.Ncb5 Nd4 13.Nd4 Rc8 14.cd5 Bd5 15.Be2 Qe7 16.a3 Qb7 17.0–0= Be7 18.f4 Nd7 19.d3 f5 20.Bh5 Rf8 21.e4+= fe4 22.Ne6 Bc5 23.d4+= Rf6 24.dc5 Re6=+ 25.Bg4 Rh6 26.Qg3+= Rg6 27.f5 Rh6? 28.f6!+– Rg6 29.Qh3 Bf7? 30.Bd7 Rc5 31.Bf5 Rf5 32.Qf5 e3 33.g3 e2 34.Rf2 Qc7 35.Rc1 Qc1= 36.Bc1 e1Q 37.Rf1 Qe8 38.Bb2 gf6= 39.Qf2 Bd5 40.Qb6 Qe4 41.Kf2 Rh6 42.h4 Bc6 43.Qb8 Kg7 44.Rc1 Qf3 45.Ke1 Qe3 46.Kf1 ½–½. Berger – Fritz,Harry, corr, 1966.

4.Nc3 d5 5.Ba3 d4 6.Na4 e5 7.Bf8 Rf8 8.e3 =.

4.d4 Bb7 5.Nc3 e6 6.Bb2 Bb4 7.a3 Bc3 8.Bc3 Ne4 9.Bb2 0–0 10.e3 c6 11.bc6 dc6 12.Bd3 c5 13.dc5 Nc5 14.0–0 Nc6 15.Qe2 Na4 16.Rab1 Qe7 17.Ba1 Qa3 18.Ng5 h6 19.Nh7 Rfd8 20.Qg4 Nc3 21.Nf6 Kh8? 22.Rb6 Ne5+/– 23.Qh5 Nd3 24.Rb7 Ne2 25.Qe2 Nc1 26.Qh5 Qa1 27.Rf7 Ne2 28.Qe2 Qe5 29.Qg4 Qg5 30.Qg5 hg5 31.Nh5 Rg8 32.Rd1 a4 33.c4 a3 34.f4 a2 35.Ra1 Rgc8 36.Ng7 Rcb8 37.Kf2 Rb1 38.Ra2 Ra2 39.Kf3 gf4 40.ef4 Rb3 41.Ke4 Rg2 42.Ne6 Rh2 43.Rf8 Kh7 44.c5 Rb4 45.Ke5 Kg6?! 46.f5 Kh7 47.c6 Rb5 48.Kf6 Rb7 49.Ng5 1–0. Gross,Gerald – Wartig,Wolfgang, email SOK–99–134, 1999.

4.d4 e6 5.e3 c6 6.c4 d5 7.cd5 ed5 8.bc6 =.

4.e3 e6 5.d4 (5.Be2 Be7 6.0–0 0–0 7.Bb2 Bb7 8.Nc3=; 5.Bb2 Bb7 6.Be2 Be7 7.0–0 0–0 8.Nc3=) 5...Be7 6.Bd3 Bb7 7.0–0 0–0 8.Nbd2 +=.

4.e3 g6 5.Bb2 (5.d4 Bg7 6.Be2 0–0 7.0–0 c6 8.c4+=; 5.c4 Bg7 6.d4 c5 7.Be2 cd4 8.Nd4=) 5...Bg7 6.c4 (6.Be2 0–0 7.d4 c6 8.c4=) 6...0–0 (6...c6 7.Be2 cb5 8.cb5+=) 7.Bf6 (7.d4 c6+= 8.Nc3+=) 7...Bf6= 8.d4 c5 9.Nc3 d6 (9...Bb7 10.Be2=) 10.Rc1 Bg4 11.Be2 Nd7 12.0–0 Re8 (12...Rc8 13.Ne4=) 13.h3+= Bf3 14.Bf3 Rc8 15.Bc6 Rf8 (15...Bg7!?+=) 16.Nd5+/– Bg7? (better is 16...Rb8+/–) 17.Bd7+– Qd7 18.Nb6 Qf5 19.Nc8 Rc8 20.dc5 (20.d5 Rb8+–) 20...Rc5 (20...Qc5 21.Qd5 Qb6 22.Rfd1+–) 21.Qa4 g5 (21...Bb2 22.Rc2 Ba3 23.b6+– (23.Qa3?! Qc2 24.Rc1 Qe4+/–)) 22.g4 (better is 22.Qa5 Qc8 23.a4+–) 22...Qf3 23.Rfd1?? (better is 23.Qa5 Bf6 24.a4+–) 23...Qh3+= 24.b6?? Qg4?? 25.Kf1+/– Qh3 26.Ke2 g4? 27.Qe8+– Bf8 28.Rd4 Qf3= 29.Ke1 Rf5 30.Rc2?? g3–+ 31.Rg4 Qg4 32.b7 g2 33.b8Q g1Q 34.Kd2 Q1d1 35.Kc3–+ Qg7 36.Kb3 Qb1 37.Ka3 Qc2 38.Qc6 (38.Qf8 Qf8 39.Qb2 Qb2 40.Kb2 Rf2 41.Kc3 Qg7 42.Kd3 Qg6 43.e4 Qg3 44.Kd4 Rd2) 0–1. babyl – McGhee, ChessWorld.net, 2008.

4.e3 Bb7

5.Ba3 c5 6.d4 cd4 7.ed4 d6 8.c4 +=.

5.Bb2 e6 6.c4 Be7 7.Be2 0–0 8.0–0 d6 9.d4 Nbd7 10.Nbd2 Ne4 11.Qc2 f5 12.Bd3 Nd2 13.Nd2 Qe8 14.e4 Qg6 15.f3 Bg5 16.ef5 ef5 17.Rae1 Qh6 18.Re2 Be3 19.Kh1 Bf4 20.h3 Qh4 21.Rg1 Nf6 22.Nf1 Nh5 23.Bc1 g6 24.d5 Rae8 25.Bf4 Qf4 26.Qd1 Bc8 27.Rf2 Re7 28.g3 Qd4 29.Rd2 Qc5 30.Qc2 Re1 31.g4 Nf4 32.Bf5 Nh3 33.Rdg2 Ng1 34.Rg1 Bf5 35.gf5 Rf5 36.Qd2 Rh5 37.Kg2 Rhe5 38.Qd3 Rg5 0–1. Luneau – Schichtel, Wildbad 1993.

5.d4 e6 6.Bd3 Bb4 7.c3 Be7 8.0–0 +=.

3.Nf3 c5

4.Bb2 d5 5.c4 d4 (5...e6 6.e3=) 6.e3 de3 7.fe3 e6 (7...Nbd7 8.Be2=) 8.Be2 Be7 (8...Bd6 9.0–0=) 9.0–0+= Nbd7 10.Nc3 b6 11.Qe1 Qc7 12.Rd1 (12.d4 Bb7 13.Bd3 Rd8+=) 12...Bb7 13.Qh4 h6 14.Qh3 0–0–0 (14...Rd8 15.d4+=) 15.Na4 (15.d4 g5 16.Ne5 cd4 17.Nf7 dc3 18.Bc3 g4 19.Bg4 Ng4 20.Nd8 Rd8 21.Qg4 e5+=) 15...g5= 16.Ne1 h5 17.d3 Kb8 (17...g4 18.Qh4=) 18.e4 (18.Nc2 Rhg8=) 18...Ka7 (18...g4 19.Qe3 e5 20.Nc3=) 19.Qe3+= Bd6 (19...Rh7!?+=) 20.Rf6 (20.e5 Ne5 21.Rf6 Ng4 22.Bg4 Bh2 23.Kf1 hg4 24.Qg5 Rdg8+=) 20...Nf6 (20...Bh2!? 21.Kh1 Bf4+/–) 21.Bf6 Be5 (21...Bh2 22.Kh1 Bf4 23.Qf2+/–) 22.Be5 (22.Bh8 Bh2 23.Kh1 Rh8+–) 22...Qe5 23.Nf3 Qf4 24.Qf4 gf4 25.Ne5 Rh7 26.Nc3 (26.Rf1 f6 27.Nc6 Bc6 28.bc6 e5+–) 26...Rg8 (26...f6 27.Nc6 Bc6 28.bc6+–) 27.Rf1 (27.Nd7 Rd8 28.Nf6 Rh6 29.Nh5 e5+–) 27...Rhg7 28.Rf2 f6 (28...h4 29.Kf1 h3 30.Rf4 hg2 31.Kg1+–) 29.Nc6 Bc6 30.bc6 h4 31.h3 Rg3 (31...Kb8 32.Bg4 Rg4 33.hg4 Rg4 34.Kh2+–) 32.Bg4 f5 (32...R8g4 33.hg4 Rg4+–) 33.ef5 ef5 (33...Rd3 34.Nb5 Ka6 35.fe6+–) 34.Nb5 Kb8 35.c7 (35.c7 Kb7 36.Bf5+–) 1–0. Orso – Kunszt, Vasas–Honved, 1993. (=1.Nf3 Nf6 2.b4 a5 3.b5 c5)

4.d4 cd4 5.Qd4 d6 6.g3 (6.e4!?+=) 6...e5 7.Qb2 Be6 8.Bg2 Nbd7 9.Ng5 d5 10.c4 Rc8 11.Ne6 fe6 12.cd5 Bc5 13.Bd2 ed5 14.0–0 0–0 15.Nc3 Nb6 16.Qb3 Qd7 17.Bg5 Bd4 18.Rac1 Kh8 (18...Bc3 19.Rc3 a4+=) 19.Bf6 Rf6 20.e3 (20.Nd5 Rc1 21.Rc1 Rf2= (worse is 21...Bf2 22.Kh1 Rf8 23.Rc7+/–)) 20...Bc3 21.Rc3 Rcf8 22.f4 d4 23.Rd3 a4 24.Qb4 Qf7 25.Qc5 (25.ed4!? ef4 26.Rdf3=) 25...de3= (worse is 25...ef4 A) worse is 26.Qd4 f3–/+ (worse is 26...Qa2 27.ef4 Qf7 28.Rfd1=); B) worse is 26.ed4 Rc8 27.Qa3 fg3 28.Rg3 Rf1 29.Bf1 Qd7=; C) 26.ef4?! Re8+/–; D) 26.Rf4 de3 27.Qb6+=) 26.Qe3 ef4 27.Rf4 Rf4 (27...Qa2?? 28.Rf6 gf6 29.Qb6 Qa1 30.Bf1+–) 28.Qf4 Qe7 (worse is 28...Qf4 29.gf4 g6 30.Rd6+/–) 29.Re3 Qc5 30.Qe5 Qc2 31.Rf3 (31.Bb7?? Qf2 32.Kh1 Qf1) 31...Nd7 32.Rf8 Nf8 33.h4 Qa2 34.Qe7 Qg8 35.b6 g5 36.Qb7 a3? (36...gh4 37.Qf3 Nd7 38.Qc3 Qg7 39.Qc8 Nf8+/–) 37.Qa8+– a2 (37...gh4 38.Qa3 Qg7 39.g4 Qd4 40.Kh1+–) 38.b7 Nd7 39.Bd5 Qb8 40.hg5 Kg7 41.Kh2 (41.Qa2?! Qg3 42.Qg2 Qg2 43.Kg2 Kg6+–; 41.Ba2?! Qg3 42.Kf1 Nb8+–) 41...h6 (41...Qf8 42.Qa2 (42.Ba2?! Qf2 43.Kh3 Qf1 44.Kh4 Qh1 45.Kg4 Qe4 46.Kh5 Qf3 47.Kh4 Qh1 48.Kg4 Qe4 49.Kh3 Qh1 50.Kg4=) 42...Nb8 43.Qb2 Kg6 44.Qe5+–) 42.Qa2 (42.Ba2 hg5 43.Be6 Qe5 44.Qg8 Kh6+–) 42...hg5 43.Qb2 Kh6 44.Be4 Qf8 45.Qd4 Qe8 46.Kg2 g4 47.Qd2 Kg7 48.Bc6 1–0. marekt – PeterRs, ChessWorld.net, 2016.

4.d4 d5 5.dc5 e6 6.e3 (6.Ba3 Nbd7=) 6...Bc5 7.Bb2 Nbd7 8.Nbd2 0–0 9.a4 (9.c4 Qe7=) 9...b6 (9...Qe7 10.c4=) 10.g3 (10.Be2 Bb7=) 10...Bb7 11.Bg2 Qc7 (11...Rc8 12.0–0+=) 12.0–0 Rac8 13.Rc1 Rfd8 14.c4 dc4 (14...e5 15.cd5 Bd5 16.Nb3=) 15.Qc2 (15.Nc4 h6=) 15...Nd5 (15...Bd5 16.e4 (worse is 16.Nc4 Bb4 17.Na3 Qc2 18.Rc2 Nc5–/+) 16...Ba8 17.Qc4=) 16.Ng5 (16.Nc4 N5f6=) 16...N7f6 (16...Nf8 17.Nc4 Nb4 18.Qe2+=) 17.Bd5= ed5 18.Bf6 gf6 19.Qh7 Kf8 20.Nh3 (20.Ngf3 Ke7+=) 20...Ke7 (20...Ke8 21.Rfd1=) 21.Nf4+= Rg8 (21...Ba3 22.Rc2+=) 22.Nf3 Bd6 (22...Ba3 23.Rcd1 Rgd8 24.Nd4+–) 23.Nd4+/– Bf4? (23...Rge8 24.Rfd1 Bf4 25.ef4+/– (25.gf4?! Rh8 26.Qc2 Rcg8 27.Kh1 Qd7=)) 24.ef4?? (better is 24.Nf5 Ke6 25.ef4 Qf4 26.Nh6+–) 24...Rcf8 (24...Rce8 25.Rfe1 Kd8 26.Qh4+/–) 25.Rfe1 (25.Nf5 Kd8+/–) 25...Kd8 26.Qf5 Qd6 (26...Re8 27.Qf6 Kc8 28.Nf5+/–) 27.Nc6 (27.Red1!? Kc7 28.Nc6+–) 27...Bc6+/– 28.bc6 Kc7 29.Red1 Rd8 30.Rc4 dc4 (30...Qe6!? 31.Qe6 fe6+=) 31.Rd6 Rd6 32.Qh7 Rf8 33.Qg7 Rc8 34.Qf7 Kc6 (34...Kd8 35.Qg8 Kc7 36.Qc4+–) 35.Qc4 Kb7 (35...Kd7 36.Qf7 Kd8 37.g4+–) 36.Qe4 Rcc6 (36...Kc7 37.h4+–) 37.h4 (37.h4 Re6 38.Qh7 Rc7 39.Qf5 Rc1 40.Kg2+–) 1–0. Ivanets,Vladimir – Kostic,Filip, Moscow, 1996. (=1.Nf3 Nf6 2.b4 a5 3.b5 c5)

4.e3 d5 =.

4.c4 d6

5.g3 Be6 6.Qc2 =.

5.g3 Bg4 6.Bg2 Qc8 7.h3+= Be6 8.d3 h6 9.Bb2 g5 10.Nbd2 Nbd7 11.Ne4 Bg7 12.h4 g4 13.Nfd2 Ne5 14.Nc3 Nh5 (14...Bf5 15.0–0=). Serebrisky,AS – Savchenko, corr Soviet Union, 1988.

5.g3 Bg4 6.Bg2 g6 7.h3 Be6 8.Ng5 Bc4 9.Nc3 Bg7 10.d3 Be6 11.Bb7 Ra7 12.Bf3 Bd7 13.Rb1 0–0 14.Bd2 h6 15.Nge4 Ne4 16.Be4 d5? (16...Be6!?+=) 17.Nd5 Be6 18.b6 Rd7 19.Ne3 White plans b7 19...Ba2 20.Rb5 Rd6 21.b7 Rb6+/– 22.Ba5 (22.Ba5 Bc3 23.Bc3 Rb5 24.Qa4 Rb1 25.Kd2 Rh1 26.Bh1+=) 1–0. michaelbuss – PeterRs, ChessWorld.net, 2009.

4.d4 e6

5.Ba3 b6 6.Nbd2 Bb7 7.e3 Qc7 8.Be2 Nd5 9.c4 Nc3 10.Qb3 Ne2 11.Ke2 d6 12.dc5 dc5 13.Bb2 Nd7 14.Rad1 f6 15.Qd3 0–0–0 16.Ne4 e5 17.Nd6 Bd6 18.Qd6 Rhe8 19.Nh4 Nf8 20.Qc7 Kc7 21.f3 Ne6 22.Nf5 Rf8 23.h4 Rf7 24.Rd8 Nd8 25.Rd1 g6 26.Nh6+/– Rf8? 27.Ng4+– e4 28.Nf6 ef3 29.gf3 h6 30.Be5 Kc8 31.e4 Nf7 32.Nd7 Ne5 33.Nf8 Nc4 34.Ng6 Na3 35.Ne7 Kc7 36.Nd5 Bd5 37.Rd5 Nb5 38.Rh5 Nd4? 39.Ke3 Nc2 40.Kd2 Nd4 41.f4 c4 42.Rh6 b5 43.Ra6 Nf3 44.Kc3 Nh4 45.Ra5 Kb6 46.Kb4 Ng2 47.Rb5 Ka6 48.f5 Ne3 49.Rc5 1–0. Stojanovski,Zdravko – Vucelic,R (1990), ch–Subotica Open, 2011. (=1.Nf3 Nf6 2.b4 a5 3.b5)

5.e3 =.

3.Nf3 c6

4.a4 d5 5.Bb2 Bg4 6.e3 Nbd7 7.d4 (7.h3 Bf3 8.gf3 e6=) 7...e6+= 8.Be2 Bb4 9.c3 Bd6 10.0–0 0–0 11.c4 dc4 12.bc6 bc6 13.Ne5 (13.Nbd2 Nb6=) 13...Be2 14.Qe2 Qc7 (14...Be5!? 15.de5 Nd5+=) 15.f4= Nb6 16.Nd2 Bb4 (16...Be5 17.fe5 Nfd5 18.Ba3+=) 17.Ndc4+= Nc4 18.Qc4 Attacking the isolated pawn on c6 18...c5 19.f5 Nd5 20.fe6 fe6 21.e4 cd4 22.ed5 Qe5= 23.de6 Rf1 24.Rf1+= Bd6 25.g3 Bc5 26.e7 Kh8 27.Rf8 Rf8 28.ef8Q Bf8 29.Bd4 Qe1 30.Kg2 Qe4 ½–½. De Francesco,K (2345) – Markl,M (2195), 12th OIBM, Bad Wiessee GER, 2008. (=1.Nf3 Nf6 2.b4 a5 3.b5)

4.Nc3 d5 5.d4 Ne4 6.Ne4 de4 7.Ng5 Bf5 8.e3 e5 9.h4 (9.de5 Qe7 Double attack (9...Qg5 Discovered attack; 9...Qe7 Decoy)) 9...h6 10.Nh3 ed4 11.Qd4 Bb4 12.Bd2 Bd2 13.Kd2 0–0 14.Nf4 Qe7 15.Kc1 Rd8 16.Qc3 Nd7 17.bc6 bc6 18.Be2 (18.Qc6 Qa3 19.Kd1 Ne5 20.Qd5 Bg4 21.f3 ef3–+) 18...Nc5 19.a4 Ne6 20.g4 Nf4 21.ef4 Bh7 22.Rb1 Qd6 23.Qe3 Qd4 24.c4 Qd6 25.Rd1 Qe7 26.h5 Rdb8–/+ 27.Kd2 Rb4 28.f5 Ra4 29.Ke1 Rb4 30.Ra1 f6 31.Rd4+= Qe5 32.Rad1 Re8–/+ 33.Rd7 Qb8 34.Qa7= Qa7 35.Ra7 Kf8 36.Rdd7 Bg8 Attacks the isolani on c4 37.Rg7 e3 38.fe3+= Re3 39.Kd2 Re8 40.Bd3 Rd8 41.Kc3 Ra4 42.Rgd7 Ra3 43.Kd2 Ra2 44.Ke3 Rd7 45.Rd7 a4 46.Rc7 a3 47.Rc6 Ke7 48.Rc7 Kd6 49.Rg7 Ra1 50.Kd4 a2 51.Ra7?? Bc4+= 52.Bc4 Rd1 53.Ke4 a1Q 54.Ra1 Ra1 0–1. Mechkarov,Stefan – Minev,Nikolay N, BUL–ch, 1953. (=1.Nf3 Nf6 2.b4 a5 3.b5)

4.e3 cb5 5.Bb5 Nc6 6.Bb2 Qb6 (6...e6 7.c4+=) 7.a4+= e6 8.Bf6 gf6 9.0–0 Be7 10.d4 d5 11.Nbd2 Bd7 12.c4 Nb4 13.Bd7 Kd7 14.Rb1 Qc6 15.cd5 Qd5 16.e4 Qh5?? (Better is 16...Qa2+/–) 17.Ne5!!+– (17…Qe5 18.de5 fe5 19.Qh5+–) 1–0. b4_player (2235) – salvati (1760), GameColony.com, 2003.

4.e3 d5

5.Bb2 Nbd7 6.c4 e6 7.a3 Bd6 8.d4 cb5 9.c5 Bc7 10.Bb5 0–0 11.Nc3 Qe7 12.0–0 Rd8 13.Qc2 e5 14.Bd7 Rd7 15.Ne5 Be5 16.de5 Qe5 17.Na4 1–0. Perea Montero – Serrano Sanchez, corr Spain 1988.

5.Nc3 e6 +=.

5.Be2 g6= 6.Bb2 Bg7 7.0–0 0–0 8.d4 (8.Nc3 cb5 9.Nb5 Nc6=) 8...Nbd7 (8...cb5 9.Bb5 Nc6 10.Nc3=) 9.c4 Re8 (9...cb5 10.cb5 Ne4 11.a4=) 10.c5 (10.Nbd2 c5+=) 10...Qc7 (10...Ne4 11.Qc1=) 11.b6+= Qb8 (11...Qd8 12.Qc2+=) 12.Nbd2 Ne4 (better is 12...e5+=) 13.a4?? (better is 13.Ne4 de4 14.Ng5+/–) 13...Ndc5!–/+ 14.Ne4 (14.dc5 Bb2 Pinning (14...Bb2 Deflection)) 14...Ne4 (14...de4?! 15.Ng5 h6 16.Nf7=) 15.Ne5 Nd6 16.Rc1 Be6 17.f4 Qd8 18.Qb3–/+ Nc8 19.Rc5 Qb6–+ 20.Qc3 Nd6 21.Bd3 f6 22.Nf3 Ne4 23.Be4 de4 24.Nd2 Bd5 25.Rb1 Qa6 26.Nc4?! Bc4 27.Rc4 e5?? 28.Qb3 Kh8 29.Ba3?? ef4–+ 30.ef4 f5 31.Bd6? b5! 32.Rc2 Bd4 33.Kh1 ba4 34.Qa4 Qd3 35.Rcc1 e3 36.Qc6 Rac8! 37.Qd5 Rc1 38.Rc1 e2 39.Be5+– Re5 40.Qd8 Re8 41.Qe8 Kg7 42.Qe7 (42.Qe7 Kh6 43.Qg5 Kg7 44.Rc7 Kg8 45.Qd8) 1–0. pumpkin (2300) – higarra (2365), net–chess.com, 2009. (=1.Nf3 Nf6 2.b4 a5 3.b5 c6)

3.Nf3 d5

4.a4 Bg4 5.Ne5 Bh5 (5...e6 6.Ng4 Ng4 7.Bb2=) 6.d4 Nbd7 7.Bb2 (7.Nd2 Ne5 8.de5 Nd7=+) 7...e6=+ 8.g3 (8.Nd7 Qd7 9.Nd2 Bb4=+) 8...c5 9.bc6=+ bc6 10.Nc6? Qb6–+ 11.Na5 Qb2 12.Nb3 Bb4 13.N1d2 Ne4 14.Rb1 Nd2 15.Nd2 Qd4 16.Bg2 Ra4 17.Bf3 Bf3 18.ef3 0–0 19.Ke2 Ra2 20.Nb3 Qc4 21.Ke3 Rc2 22.Nc1 Bc5 23.Qd4 Qd4# 0–1. Jatkowski – Hjortstam,Kurt, corr 3GMM–01, 1995.

4.Bb2 Bf5 =.

4.c4 e5 5.Ne5 Bd6 (5...Nbd7 6.Nd7 Qd7 7.e3=) 6.Bb2+= Qe7 7.Nf3 Bg4 (7...0–0!?=) 8.cd5+/– 0–0 9.Nc3 a4 (9...Nbd7 10.e3+/–) 10.a3 (10.h3 Bf3 11.gf3 a3+/–) 10...Nbd7 11.e3 Nb6 12.h3 Bf5 13.Nh4 Bd7 14.Qc2 (14.Bd3 A) 14...Nbd5? 15.Nd5 (15.Na4?! Nf4 16.Bf1 Rfe8=) 15...Nd5 16.Qh5+–; B) 14...g6 15.Qc2 Nbd5+/–) 14...Nfd5 (14...g6 15.Bd3+/–) 15.Nd5+/– Qh4 (15...Nd5 16.Nf5 Qg5 17.Bd3+–) 16.Nb6 (16.Qc3 Qh6 17.Nb6 cb6+/–) 16...cb6 17.Qc3 Qh6 18.Qd4 Rfd8 19.Qb6 Qg6 20.Qb7 Rab8 21.Qd5 (21.Qa6 Ra8 22.Qb6 Rdb8+/–) 21...Bb5 22.Bb5 Ba3 23.Qa2 Rb5 1–0. bla_ner (1915) – manijer_wmp3 (2160), gameknot.com, 2015.

4.c4 g6 5.Nc3 =.

4.d4 Bg4 5.Ne5 Bh5 6.g3 e6 7.Bg2 c5 8.bc6 Nc6 9.Nc6 bc6 10.0–0 Bd6 11.c4 0–0 12.c5 Bc7 13.Nd2 Rb8 14.Nf3 Ne4 15.Qd3 Bg6 16.Qa3 Rb4 17.Re1 Qf6 18.Be3 h6 19.Ne5 Be5 20.de5 Qe5 21.Qa5 Rb2 22.Be4 Qe4 (worse is 22...de4 23.Rad1 Qh5 24.Qa6=) 23.Qc3 Rc2 24.Qd4 Qd4 25.Bd4 f6 26.f4 Bh5 27.a4 Be2 28.a5 Ra8 29.Ra3 Kf7 30.Rb1 Bb5 31.Rb2 Rc4 32.Rd2 Ba4 33.Bc3 Rc5 34.Ra4 Rc3 35.a6 Ra7 36.Rb2 e5 37.f5 Ke7 0–1. Pott,Brian (1750) – Deschamp,Guy (2305), IECG, 2004.

4.e3 Nbd7 5.Bb2 =.

4.e3 e6

5.c4 c5 6.Bb2 (--> 1.b4 a5 2.b5 c6 3.Bb2 c5 4.e3 e6 5.c4 Nf6 6.Nf3).

5.d4 c6 6.c4 Bb4 7.Bd2 0–0 (7...Be7 8.Nc3=) 8.Bb4+= ab4 9.Nbd2 Ra3 10.Qc2 dc4 11.Bc4 Bd7 12.bc6 (12.Nb1 Ra5+=) 12...Bc6 13.Qb2 Bf3 (13...b5 A) 14.Qb4? Ra4 15.Qb3 bc4 (15...Rc4?! 16.Nc4 bc4 17.Qc4–/+) 16.Nc4 Nbd7–+; B) 14.Be2=) 14.Nf3+= Nc6 15.0–0 Ne4 16.Nd2 Nd2 17.Qd2 e5 (17...Qd6 18.Rfd1+=) 18.d5 Qd6 19.Rab1 Rc8 20.Rfd1 (20.Rfc1 Na5 21.Be2 Rcc3=) 20...Na5= 21.Rb4?? (better is 21.Bd3=) 21...Nc4–+ 22.Rc4 (22.Qe1–+) 22…Rc4 (23.Qb2 b6–+) 0–1. Melia,Ken – Pilz,Erhard, TT–05.55 TSC, 2002.

5.d4 Nbd7 6.Bd3 Bd6 7.Nbd2 (7.Ba3 Ba3 8.Na3 Qe7=) 7...e5 8.de5 Ne5 9.0–0 0–0 10.Ne5 Be5 11.Rb1 Be6 12.Nf3 Bd6 13.Bb2 Qe7 14.Qe2 Ne4 15.Nd4 Bd7 (15...Qh4 16.Nf3 Qh5 17.c4=) 16.Rfd1 a4 17.c4. Tihomir Glowatzky – winugly123, ChessWorld.net, 2008.

5.d4 Ne4 6.Bd3 =.

4.e3 Bf5

5.Bb2 e6 6.Be2 h6 (6...Bd6 7.Nc3=) 7.c4 (7.Nd4 Bg6=) 7...Nbd7 8.cd5 ed5 9.Nc3 Bd6 10.0–0 0–0 11.Nd4 Bg6 (11...Bh7 12.f4=) 12.f4 Nc5 13.Ba3 (13.f5 Bh7=) 13...Ne6 14.Bd6 Qd6 15.Qa4 Nd7 (15...Nd4 16.Qd4 Bf5 17.Qe5=) 16.f5 Nb6 17.Qd1 Nd4 18.ed4 Bh7 19.Bd3 Rfe8 20.Qf3 Rad8 (20...Re7 21.Rae1=) 21.Rae1+= c6 22.bc6 bc6 23.g4 (23.Re2 Re2 24.Qe2 Qf6+=) 23...Nc4= 24.Re8 Re8 25.Bc4 (25.Rf2 Re1 26.Kg2 f6+=) 25...dc4= 26.Qf4 Qd7 27.Rf3 f6 28.Re3 Rd8 29.Ne2 Kh8 30.Re4 Bg8 31.Qe3 Bd5 32.Re7 Qd6 33.Nf4 Kg8 34.Re8 Kh7 35.Ng6 Bf7 36.Nf8 Kg8 37.Rd8 Qd8 38.Ne6 Qd5 39.Nf4 Qd6 40.Ne2 h5 41.h3 a4 42.a3 Kh7 43.Kg2 Kh8 44.Qg3 Qd5 45.Kf2 c5 46.Qe3 cd4 47.Qd4 Qb7 48.Qd6 Kh7 49.Nc3 Qa7 50.Kg2 Be8 51.Qe6 Qb7 52.Kf2 Qa7 53.Ke2 Bf7 54.Qe3 Qb7 55.Kf2 Qd7 56.Ne4 h4 57.Nc5 Qc6 58.Ne6 Qe6 1–0. cachisss (1930) – bla_ner (1930), gameknot.com, 2015.

5.Be2 e6 6.Nh4 Bg6 7.Bb2 Bd6 8.Nc3 Nbd7 9.Ng6 hg6 10.h3 a4 11.a3 c5 12.0–0 Qb6 0–1. Rushton,Darren (1630) – Malmstroem,Jan (1725), TSC, 2002.

4.e3 Bg4

5.Bb2 e6 6.c4 Nbd7 7.cd5 ed5 8.Be2 Bd6 9.h3 Bf5 10.0–0 Nc5 11.Nc3 0–0 12.d3 Re8 13.Na4 Nd3?? 14.Bd3+– Bd3 15.Qd3 1–0. Pleschke,Helmut – Van Rooijen,Peter, IECG, 2000.

5.Be2 Nbd7 6.Nc3 (6.Ba3 Bf3 7.Bf3 e5=) 6...e6 (6...e5 7.Bb2=+) 7.h3 (7.Bb2 Bd6=) 7...Bf3 8.Bf3 Ne5 9.d4 Nf3 10.Qf3 Bb4 11.Bd2 Qe7 12.0–0 Bc3 13.Bc3 Qa3 14.Bd2 Ne4 15.Qe2 Qb2 16.Rac1 Nd2 17.Qd2=+ Qb5 18.c4 dc4 19.Qe2 Qd7 (20.Rc4 0–0=+; 19...Ra6 20.Rb1 Qd5 21.Rfc1=+). Namasivayan,Manohar – Dunn,Michael, corr IECC, 1997.

5.Be2 e6 6.0–0 =.

5.Be2 e6 6.h3 Bh5 7.0–0 a4 (7...Nbd7 8.Bb2=) 8.c4 Bd6 (8...Nbd7 9.Nc3+=) 9.d4 Nbd7 (9...dc4 10.Nfd2 Be2 11.Qe2+=) 10.Nbd2+= c6 11.Bb2 0–0 12.c5 Bb8 13.Bc3 cb5 14.Qb1 e5 (14...Bf3 15.Nf3 Ne4 16.Be1+=) 15.Bb5+/– Bg6 Black intends e4 16.Qb4 (16.Qb2 ed4 17.Bd4 Bc7+/–) 16...e4 (16...ed4 17.ed4 (worse is 17.Nd4 Nc5 18.Be2 Qd6+=) 17...Ne4 18.Rfd1+=) 17.Ne5 White prepares c6 (17.Nh4 Qc7 18.f4 ef3 19.Ndf3 Be4=) 17...Ne5 18.de5 Nd7 19.c6 Ne5 (19...bc6 20.Bc6 Ra7 21.Bd5 Ne5 22.Be4+/–) 20.cb7 Ra7 21.Be5 Be5 22.Bc6 (worse is 22.Ba4 Bd6 23.Qb5 Qe7+=) 22...Ba1 23.Ra1 Ra6 24.Rc1 Qc7 (24...Rb6!? 25.Qc5 Bf5+/–) 25.Rc5+– Rb6 26.Rb5 (worse is 26.Qa4 Rb7 27.Qd4 Ra7=) 26...Rb5 27.Qb5 a3 (27...d4!? 28.ed4 h6 29.Qa4+– (29.Ne4?! Be4 30.Be4 Qc1 31.Qf1 Qd2+/–)) 28.Bd5 Rd8 (28...Rb8 29.Ne4 Be4 30.Be4+–) 29.Nb3 (29.Ne4?? Be4 30.Be4 Rd1 31.Qf1 Rf1 32.Kf1 Kf8–+) 29...h5 (29...h6 30.Nc5 Kh7 31.g3 (31.Ne4?! Qe5 32.Nc3 Qc3=) 31...Rd5 32.b8Q Rc5 33.Qc7 Rb5 34.Qa7+–) 30.Qc5 Qb8 (30...Qd7 31.Nd4 Rb8 32.Bc6+–) 31.Nd4 Kh7 32.g3 f6 (32...Kh6 33.Nc6 Rd5 34.Qe7+– (34.Nb8? Rc5 35.Nc6 Rb5–+; 34.Qd5?! Qb7 35.Kg2 f6=)) 33.Qe7 Re8 (33...Rd5?? 34.Ne6 Bf7 35.Qf7+–) 34.Qa3 h4 35.Bc6 hg3 (35...Rh8 36.gh4 Qc7 37.Qa8+–) 36.Be8 Qb7 (36...gf2 37.Kf2 Qb7 38.Bg6 Kg6+–) 37.Bg6 Kg6 38.fg3 Qb1 (38...Qc7 39.Kg2+–) 39.Kg2 Qe1 (39...Kh6 40.h4 Kh7 41.Qb3+–) 40.h4 Qd2 (40...Qb1 41.Qb3 Qc1 42.Qg8 Qd2 43.Kh3+–) 41.Kh3 Qe1 (41...Qd3 42.Qc5+–) 42.Qc5 Qf1 (42...Kf7 43.Qd5 Kf8 44.Qd7+–) 43.Kg4 Qd1 44.Kf4 Qf1 (44...Kh7 45.Qf5 Kh8 46.Qb5+–) 45.Ke4 Qg2 (45...Qa6 46.Qf5 Kf7 47.h5+–) 46.Kf4 Qa2 (46...Qf1 47.Nf3+–) 47.Qc2 Qc2 48.Nc2 1–0. calabuig (2000) – manijer_wmp3 (2160), gameknot.com, 2015.

5.h3 Bc8 A) 6.Be2 A1) 6...e6 7.c4 (7.0–0 Nbd7 8.Nc3 Bd6 9.d4 b6 10.Bd2 Ne4 11.Bd3) 7...Bd6 8.Nc3 0–0 9.0–0 Nbd7 10.d4 dc4 11.Bc4; A2) 6...g6 7.0–0 (7.Nc3 Bg7 8.Ba3 Ne4 9.Ne4 de4 10.Nd4 Bd4 11.ed4) 7...Bg7 8.Nc3 0–0 9.a4 Ne4 10.Bb2 Nd7 11.Bd3; A3) 6...Nbd7 7.Nc3 (7.0–0 e6 8.c4 Bd6 9.cd5 ed5 10.Nc3 0–0 11.Qc2) 7...e5 8.0–0 Bd6 9.a4 0–0 10.Ba3 Ba3 11.Ra3; B) 6.Ba3 B1) 6...Bf5 7.g4 (7.Nc3 Nbd7 8.Nh4 Be4 9.d3 Bg6 10.Be2 e5 11.Bf8) 7...Bg6 8.c4 e5 9.Bf8 Kf8 10.Ne5 Nbd7 11.Nf3; B2) 6...e5 7.Bf8 Kf8 8.Ne5 Nbd7 9.Nd7 Bd7 10.Nc3 Qe7 11.Be2; B3) 6...Nbd7 7.Nc3 (7.c4 e6 8.Bf8 Kf8 9.Nc3 Ne4 10.Qc2 Nc3 11.Qc3) 7...e5 8.Bf8 Kf8 9.h4 e4 10.Nd4 Ne5 11.Be2; C) 6.Bb2 C1) 6...e6 7.Bd3 (7.c4 Bd6 8.Nc3 Nbd7 9.d4 a4 10.c5 a3 11.Bc1) 7...Nbd7 8.0–0 Bd6 9.Nc3 a4 10.Ne2 0–0 11.Ng3; C2) 6...Bf5 7.Bf6 (7.g4 Be6 8.Nd4 Nbd7 9.Ne6 fe6 10.Nc3 a4 11.a3) 7...ef6 8.Nc3 Be6 9.Bd3 Bb4 10.Nd4 0–0 11.0–0; C3) 6...Nbd7 7.Be2 (7.Nc3 e5 8.Be2 Bd6 9.0–0 0–0 10.d3 Re8 11.Na4) 7...e6 8.0–0 Bd6 9.c4 0–0 10.Nc3 Nb6 11.cd5; D) 6.Nc3 D1) 6...Qd6 7.a4 (7.Bd3 Nbd7 8.0–0 g6 9.b6 c6 10.Rb1 Bg7 11.Rb3) 7...Nbd7 8.Ba3 Qb6 9.Be2 e5 10.Bf8 Kf8 11.0–0; D2) 6...e6 7.Bb2 (7.Bd3 Nbd7 8.0–0 Nc5 9.Qe2 Nd3 10.Qd3 Bc5 11.Bb2) 7...Nbd7 8.Bd3 Bd6 9.0–0 a4 10.a3 Nc5 11.Qe2; D3) 6...Nbd7 7.Ba3 (7.d4 e6 8.Bd3 Bd6 9.0–0 0–0 10.Qe2 e5 11.e4) 7...e5 8.Bf8 Kf8 9.Be2 g6 10.0–0 Kg7 11.Qc1.

5.h3 Be6 A) 6.Nc3 A1) 6...Nbd7 7.Nd4 (7.Ba3 g6 8.Bd3 Bg7 9.0–0 0–0 10.Qe2 Re8 11.Nd4) 7...g6 8.Ne6 fe6 9.d4 Bh6 10.Bd3 0–0 11.0–0; A2) 6...Qd6 7.a4 (7.Nd4 Nbd7 8.Be2 g6 9.a4 Bg7 10.Ba3 Qb6 11.0–0) 7...Nbd7 8.Ba3 Qb6 9.Bd3 g6 10.0–0 Bg7 11.Nd4; A3) 6...g6 7.Ng5 (7.Be2 Nbd7 8.Nd4 Bg7 9.0–0 0–0 10.Ba3 Nb6 11.Bd3) 7...Nbd7 8.Ne6 fe6 9.Be2 Bg7 10.d4 0–0 11.0–0; B) 6.Be2 B1) 6...g6 7.Nc3 (7.0–0 Bg7 8.Nd4 Nbd7 9.Nc3 0–0 10.Ba3 Nb6 11.Bd3) 7...Bg7 8.Nd4 Nbd7 9.Ne6 fe6 10.d4 0–0 11.0–0; B2) 6...Bf5 7.Nc3 (7.0–0 Nbd7 8.Bb2 e6 9.Nh4 Bd6 10.Nf5 ef5 11.c4) 7...Nbd7 8.0–0 e5 9.g4 Be6 10.Ng5 Bb4 11.Bb2; B3) 6...Nbd7 7.Nc3 (7.0–0 g6 8.Nc3 Bg7 9.Nd4 Nc5 10.Ba3 Nfe4 11.Ne4) 7...g6 8.Ba3 Bh6 9.0–0 0–0 10.Nd4 Nb6 11.d3; C) 6.Nd4 C1) 6...Bc8 7.Nc3 (7.Be2 e5 8.Nf3 Bd6 9.Nc3 0–0 10.Bb2 h6 11.0–0) 7...e5 8.Nf3 Bd6 9.Be2 0–0 10.0–0 Bf5 11.Bd3; C2) 6...g6 7.Nc3 (7.Ne6 fe6 8.Nc3 Bg7 9.Ba3 0–0 10.Bd3 Nbd7 11.0–0) 7...Bg7 8.Be2 Nbd7 9.Ne6 fe6 10.d4 0–0 11.0–0; C3) 6...Bd7 7.Nc3 (7.Nf3 Be6 8.Nc3 g6 9.Nd4 Bg7 10.Be2 Qd6 11.a4) 7...e5 8.Nf3 Bd6 9.Be2 e4 10.Nd4 0–0 11.Bb2; D) 6.Ba3 D1) 6...g6 7.Nc3 (7.Bd3 Bg7 8.Nc3 Nbd7 9.0–0 0–0 10.Qe2 Re8 11.Nd4) 7...Nbd7 8.Bd3 Bg7 9.0–0 0–0 10.Qe2 Re8 11.Nd4; D2) 6...Bf5 7.Nc3 (7.Bd3 Bd3 8.cd3 Nbd7 9.d4 e6 10.Bf8 Nf8 11.Nc3) 7...Nbd7 8.Bd3 Bd3 9.cd3 e5 10.Bf8 Kf8 11.Rc1; D3) 6...Nbd7 7.Nc3 (7.Bd3 g6 8.0–0 Bg7 9.Nc3 0–0 10.Qe2 Re8 11.Nd4) 7...g6 8.Bd3 Bg7 9.0–0 0–0 10.Qe2 Re8 11.Nd4.

5.h3 Bf3 6.Qf3 (6.gf3 A) 6...e5 7.Rg1 (7.Nc3 Be7 8.Rg1 0–0 9.Bb2 Nbd7 10.Na4 g6 11.h4) 7...Nbd7 8.Nc3 g6 9.Bb2 Bd6 10.h4 Qe7 11.Qe2; B) 6...Nbd7 7.Nc3 (7.Rg1 g6 8.Nc3 Nc5 9.Qe2 Qd7 10.Bg2 e5 11.f4) 7...e5 8.Rg1 g6 9.Bb2 Bd6 10.h4 Qe7 11.Bh3; C) 6...e6 7.Nc3 (7.Rg1 Nbd7 8.Nc3 g6 9.Bb2 Bd6 10.f4 a4 11.a3) 7...Bd6 8.f4 Nbd7 9.Rg1 0–0 10.Bb2 Nc5 11.Qf3) 6...e6 (6...Nbd7 7.Ba3 (7.Nc3 e6 8.Be2 Bd6 9.d4 Bb4 10.Bd2 Bc3 11.Bc3) 7...e5 8.Bb2 Bb4 9.a3 e4 10.Qg3 Bc5 11.Qg7; 6...e5 7.Be2 (7.Bb2 Qd6 8.Nc3 Nbd7 9.Qg3 e4 10.Ne2 g6 11.Nf4) 7...Qd6 8.Nc3 Nbd7 9.0–0 e4 10.Qf5 Qe5 11.Qe5) 7.c4 (7.Bb2 Nbd7 8.Nc3 a4 9.Qg3 a3 10.Bc1 Nc5 11.Be2; 7.Bd3 Nbd7 8.Bb2 Bd6 9.0–0 0–0 10.Nc3 Ne5 11.Qe2) 7...c6 (7...Nbd7 8.cd5 Nd5 9.Bb2= Bd6 10.Bg7 Rg8 11.Bd4) 8.Nc3 Be7 (8...Bb4 9.Bb2= 0–0 10.a3 Bc3 11.Bc3) 9.Be2 (9.Rb1 0–0 10.bc6 bc6 11.cd5) 9...cb5 (9...0–0 10.Rb1+= Qc7 11.0–0; 9...Nbd7 10.bc6 bc6 11.cd5) 10.cd5 (10.Nb5 0–0 11.Bb2) 10...b4 (10...Nd5 11.Bb2) 11.d6 Bd6 12.Qb7 Nbd7 (12...Na6 13.Na4 Nc5 14.Nc5 Bc5 15.Qb5 Nd7 16.Bb2+=) 13.Nb5+/– Be5 (13...Ke7!? 14.Nd4 Kf8+/–) 14.d4+– Rb8 15.Qf3 Bc7 16.Bd2 0–0 17.Rc1 Rc8 18.Na7 (18.0–0 Nb6+/–) 18...Ra8+/– 19.Nc6 Qe8 20.Nb4 (20.0–0 e5+/–) 20...ab4 21.Rc7 1–0. Wiese,Uwe (2375) – Bartelt,Rasmus (2000), remoteschach.de, 2010.

5.h3 Bf5 A) 6.Nc3 A1) 6...Qd6 7.a4 (7.Nd4 Bg6 8.f4 e5 9.fe5 Qe5 10.Bd3 Bd6 11.Bg6) 7...Nbd7 8.Ba3 Qb6 9.g4 Be6 10.Bd3 h6 11.0–0; A2) 6...e6 7.Bb2 (7.Nd4 Bg6 8.Be2 e5 9.Nf3 Nbd7 10.Bb2 Bb4 11.0–0) 7...Nbd7 8.Nh4 Bg6 9.Be2 Bd6 10.0–0 Nc5 11.f3; A3) 6...Nbd7 7.Bb2 (7.Nh4 Be4 8.Be2 e6 9.0–0 Bd6 10.d3 Bg6 11.e4) 7...e5 8.g4 Be6 9.g5 Ne4 10.Ne4 de4 11.Ne5; B) 6.Be2 B1) 6...e6 7.0–0 (7.Nd4 Bg6 8.0–0 Nbd7 9.Nc3 Bd6 10.f4 0–0 11.Bf3) 7...Bc5 8.Nh4 0–0 9.Nc3 Nbd7 10.Nf5 ef5 11.Bb2; B2) 6...e5 7.Ne5 (7.Bb2 Nbd7 8.Ne5 Be7 9.Nf3 Nc5 10.Nc3 0–0 11.0–0) 7...Nbd7 8.Nf3 Bb4 9.Nd4 Bg6 10.0–0 0–0 11.f4; B3) 6...Nbd7 7.Nh4 (7.Bb2 e6 8.Nc3 Bd6 9.0–0 0–0 10.Nh4 Bg6 11.Ng6) 7...Bg6 8.Nc3 e6 9.Bb2 Bd6 10.0–0 0–0 11.Ng6; C) 6.Bb2 C1) 6...e6 7.Nh4 (7.Nd4 Bg6 8.Bd3 e5 9.Bg6 hg6 10.Nf3 e4 11.Nd4) 7...Be4 8.Be2 Nbd7 9.Nc3 Bd6 10.0–0 0–0 11.d3; C2) 6...Bg6 7.Bf6 (7.Nc3 Nbd7 8.Ne2 e6 9.Nf4 Bb4 10.Be2 0–0 11.0–0) 7...gf6 8.c4 Nd7 9.Nc3 dc4 10.Bc4 Nb6 11.Be2; C3) 6...Nbd7 7.Nc3 (7.Be2 e6 8.Nd4 Bg6 9.Nc3 Bc5 10.0–0 a4 11.a3) 7...e5 8.g4 Be6 9.g5 Ne4 10.Ne4 de4 11.Ne5; D) 6.g4 D1) 6...Be4 7.Nc3 (7.Bb2 h6 8.Nc3 Nbd7 9.Bg2 e6 10.Ne4 de4 11.Nd4) 7...h6 8.d3 Bf3 9.Qf3 e6 10.Bg2 Bd6 11.0–0; D2) 6...Be6 7.Nc3 (7.Bg2 h5 8.g5 Ne4 9.Bb2 Qd6 10.Ba3 Qb6 11.d3) 7...Qd6 8.a4 Nbd7 9.Ba3 Qb6 10.Bg2 g6 11.g5; D3) 6...Bg6 7.Bb2 (7.Nc3 Nbd7 8.g5 Ne4 9.Nd5 Ne5 10.Nf4 Nf3 11.Qf3) 7...Nbd7 8.Nc3 Nc5 9.Be2 a4 10.a3 e6 11.g5.

5.h3 Bh5 A) 6.Nc3 A1) 6...Nbd7 7.Ba3 (7.g4 Bg6 8.g5 Ne4 9.Nd5 Ne5 10.Nf4 Nf3 11.Qf3) 7...e6 8.Bf8 Rf8 9.Bd3 Nc5 10.0–0 Nfe4 11.g4; A2) 6...Qd6 7.Be2 (7.a4 Ne4 8.Ba3 Nc3 9.dc3 Qf6 10.Bb2 e6 11.g4) 7...Nbd7 8.0–0 Bf3 9.Bf3 Ne5 10.Bb2 Nc4 11.Rb1; A3) 6...e6 7.Bb2 (7.Rb1 Nbd7 8.Bb2 Bd6 9.Be2 0–0 10.0–0 Nc5 11.Nd4) 7...Nbd7 8.g4 Bg6 9.g5 Ne4 10.h4 h6 11.d3; B) 6.Ba3 B1) 6...e6 7.Bf8 (7.Bb2 Nbd7 8.Nc3 Bc5 9.Be2 0–0 10.0–0 Qe7 11.d4) 7...Rf8 8.Nc3 Nbd7 9.Be2 Bf3 10.Bf3 Ne5 11.0–0; B2) 6...Bf3 7.Qf3 (7.gf3 Nbd7 8.Nc3 e5 9.Bb2 Bd6 10.Rg1 0–0 11.Bd3) 7...e6 8.Bf8 Kf8 9.Nc3 Nbd7 10.Bd3 g6 11.0–0; B3) 6...Nbd7 7.Nc3 (7.g4 Bg6 8.Nc3 e6 9.Bf8 Rf8 10.d3 Nc5 11.Qd2) 7...e6 8.Bf8 Rf8 9.Be2 Bf3 10.Bf3 Ne5 11.0–0; C) 6.Bb2 C1) 6...e6 7.c4 (7.d3 Nbd7 8.Nc3 Bd6 9.Be2 0–0 10.0–0 Nc5 11.Ba3) 7...Nbd7 8.Nc3 Bf3 9.gf3 dc4 10.Bc4 Ne5 11.Qe2; C2) 6...Bg6 7.Nc3 (7.Bf6 gf6 8.c4 Nd7 9.Nc3 dc4 10.Bc4 Nb6 11.Be2) 7...Nbd7 8.Ne2 e6 9.Nf4 Bd6 10.Be2 0–0 11.0–0; C3) 6...Nbd7 7.Be2 (7.Nc3 e6 8.Be2 Bd6 9.Nd4 Bg6 10.0–0 0–0 11.f4) 7...e6 8.0–0 Bd6 9.Nc3 0–0 10.Nd4 Bg6 11.f4; D) 6.Be2 D1) 6...Nbd7 7.Bb2 (7.Nc3 e6 8.0–0 Bc5 9.Na4 Bd6 10.Bb2 0–0 11.d3) 7...e6 8.0–0 Bd6 9.Nc3 0–0 10.Nd4 Bg6 11.f4; D2) 6...Bf3 7.Bf3 (7.gf3 Nbd7 8.Nc3 Nc5 9.d4 Ne6 10.Rg1 Qd6 11.a4) 7...Nbd7 8.Bb2 e6 9.Nc3 Ne5 10.0–0 Nc4 11.Qc1; D3) 6...e6 7.Nc3 (7.0–0 Nbd7 8.Bb2 Bc5 9.c4 dc4 10.Na3 Nb6 11.Nc4) 7...Nbd7 8.0–0 Bc5 9.Nd4 Be2 10.Qe2 0–0 11.Nf3.

3.Nf3 d6

4.Bb2 e5 5.a4 Nbd7 6.e3 g6 7.d4 e4 8.Nfd2 Bg7 9.Be2 Qe7 10.c4 0–0 11.0–0 b6 12.Nb3 Bb7 13.Qc2 Ne8 14.Nc3 f5 (14...Nef6!?=) 15.Nd5+= Bd5 16.cd5 Ndf6 17.Nd2 Bh6 (17...Nd5 18.Bc4 Nef6 19.Qb3+–) 18.g3 (18.Nb1 f4 (18...Nd5?? 19.Bc4 Kg7 20.Bd5+–) 19.ef4 Bf4+= (19...Nd5 20.Bc4 Qe6 21.Nc3+–)) 18...Ng7 (18...Nd5 19.Qb3 Nef6+–) 19.Bc1 Rae8 (19...Nd5?? 20.Bc4+–) 20.Ra3 Ng4 Black prepares f4 (20...Qf7 21.Bc4+/–) 21.h3 Nf6 22.Re1 f4 23.ef4 Nf5 24.Qc4 e3+= 25.Nf1 ef2 26.Kf2 Bg7 27.Bb2 Rf7 28.Raa1 Qd7 29.Bf3+= Rfe7 30.Bc3 Re1 31.Re1 Re1 32.Ke1 Kf7 33.Qe2 Qe7? 34.Qe7 Ke7 35.Kd2 Nh5 36.Bh5 gh5 37.Kd3 Bf6 38.Ke4 Ng7 39.Ne3 Kf7 40.Nc4 Kg6 41.Ne3 Be7?? 42.Be1 Ne8 43.g4 hg4 44.hg4 Nf6 45.Kf3 h5? 46.g5 Ne8 47.Bh4 Ng7 48.Ke4 Kf7 49.f5 Bf8 50.g6 Kg8 51.f6 Be7 52.fe7 Ne8 53.Nc4 Nf6 54.Bf6 (54.Bf6 h4 55.e8Q#) 1–0. Salvatti,D (2110) – Figar,Nicolas (1800), Mar del Plata ARG, 7th Continental Ch, 2012. (=1.Nf3 Nf6 2.b4 a5 3.b5)

4.Nc3 d5 5.Ba3 =.

4.d4 c6 5.a4 g6 6.Bb2 Bg7 7.e3 0–0 8.c4 (8.Bd3 Qb6=) 8...Nbd7 (8...Qb6 9.Ba3=) 9.Be2 Ne4 10.Nbd2 Ndf6 11.0–0 cb5 12.ab5 b6 13.Bd3 Bb7 14.Qc2 Nd2 15.Nd2 Rc8 16.Rac1 Rc7 17.Qb3 Qa8 18.d5 Nd7 19.Bg7 Kg7 20.Qb2 Kg8 21.Nb3 (21.Nf3 h6=) 21...Nc5 (21...a4 22.Ra1=) 22.Nc5 Rc5 23.f4 e6 24.e4 Qd8 25.Rf3 Qh4 26.Rcf1 Re8 27.Rh3 Qe7 28.f5 ef5 29.ef5 Qe5 30.Qd2 Bc8 31.Rg3 Qd4 32.Kh1 Re5? (32...Qg7!?=) 33.Qg5 (33.fg6!? hg6 34.Qh6+–) 33...Bf5 34.Bf5 Qc4?? (better is 34...Kg7 35.Rg4 Qe3 36.Qe3 Re3+=) 35.Qd8+– Kg7 36.Bd3 Qd5 37.Qf6 (37.Qf6 Kf8 38.Qh8 Ke7 39.Qh7+–) 1–0. Mrozinski,Werner – Kedziora,Claus (2245), Ruhrgebiet–ch, 2000. (=1.Nf3 Nf6 2.b4 a5 3.b5 d6)

4.d4 Bf5 5.e3 =.

4.d4 g6 5.Bb2 (5.e3 Bg7=) 5...Bg7 (5...Bf5 6.e3+=) 6.Nbd2 (6.e3 0–0=) 6...0–0 (6...Bf5 7.e3=) 7.e4 e5 (7...d5!?=) 8.de5+= Ng4 (8...de5 9.Ne5 Ng4 10.Ng4 Bb2 11.Rb1=) 9.Nc4+/– Ne5 (9...Qe7 10.ed6 Qe4 11.Qe2 Qe2 12.Be2 Bb2 13.Nb2 cd6 14.Nc4+–) 10.Nce5 (10.Be5?! de5 11.Qd8 Rd8=) 10...de5 11.Qd8 (11.Ne5?! Qe7 12.Qd4 Re8=) 11...Rd8 12.Be5 (12.Bc4 c6 13.Ne5 Be5 14.Be5 Re8+=) 12...Re8 13.0–0–0 Bh6 (13...Be5!? 14.Ne5 Kg7+=) 14.Kb1+/– Nd7 15.Bb2 (15.Bc7 Nc5 16.Bd3 Ne4 17.Be4 Re4 18.Rd8 Kg7+/–) 15...Nc5 (15...Re4 16.Bd3 Rg4 17.g3+=) 16.Bd3 (16.e5 Ne4 17.Bd4 Bg4+=) 16...Bd7 (16...Ne4? 17.Be4 Re4 18.Rd8 Bf8 19.Ba3+–) 17.Ne5 (17.c4 Nd3 18.Rd3 Be6+=) ½–½. Serebrisky,Alexandr – Wenger,Klaus, corr Danube, 1989. (=1.Nf3 Nf6 2.b4 a5 3.b5 d6)

4.Nc3 g6

5.e4+= Bg7 6.d4 0–0 7.Be2 b6 (7...c5 8.0–0=) 8.0–0+= Bb7 9.Qd3 Nbd7 (9...c5 10.bc6 Nc6 11.a3+=) 10.Be3 e5 (10...Ng4 11.Bd2+=) 11.d5 Ng4 12.Bg5 f6 13.Bh4 Nc5 14.Qc4 g5 15.Bg3 f5 16.ef5 Nh6 17.Rae1 (17.Ne4 Ne4 18.Qe4 Bc8+=) 17...Nf5 18.Ne4 Ne4 (18...g4 19.Nc5 bc5 20.Qg4 Bd5 21.c4+=) 19.Qe4 Ng3 (19...g4 20.Nd2 h5 21.Bd3+=) 20.fg3 White gets in control. 20...Qe7 (20...Bf6 21.Rf2+=) 21.Nd4+/– Rf1 22.Rf1 Rf8 23.Nf5 Qd7 24.Bd3 Rf7 25.Rf3 Bc8 26.Qg4 h6 27.Qe4 (27.c3 Rf6+/–) 27...Bf8 28.g4 (28.a3 Qe8+/–) 28...Bb7 29.c3 Bc8 30.a3 (30.Rf2 Bb7+/–) 30...Bb7 31.Rf1 ½–½. marekt – girke, ChessWorld.net, 2003.

5.e4+= Bg7 6.d4 c5 7.bc6 Nc6 8.Be2 0–0 9.Bg5 h6 10.Be3 Ng4 11.0–0 e5 12.d5 Ne3 13.fe3 Ne7 14.Rb1 Qc7 15.Qd3 Bd7 16.Nb5 Qc5 17.Qc3 Qc3 18.Nc3 Rab8 19.Nb5 Bb5 20.Rb5 b6 21.c4 Nc8+= 22.Rfb1 Ra8 23.a3 Ra7 24.Kf2 f5 25.ef5 gf5 26.g3 Raf7 27.h3 f4 28.ef4 ef4 29.Rg1 fg3 30.Rg3 Kh8 31.Ke3 Re7 32.Kd2 Rfe8 33.Bd3 Rf8 34.Bg6 Rf4 35.Kd3 Rf6 36.Rb1 Rf4 37.Rbg1 Rc7 38.Be4 b5 39.cb5+– Rc3 40.Kd2 Rc7 41.Ke3 Rf8 42.Nd4 Rc3 43.Bd3 Bd4 44.Kd4 Ra3 45.Rg6 Ra4 46.Kc3 Rh4 47.Rg7 Nb6 48.Rh7# 1–0. marekt (2260) – netplayer29 (2045), ICC, 2003.

3.Nf3 e6

4.Bb2 c6 5.Nc3 Qb6 (5...d5!?=) 6.Na4 Qc7 7.Bf6 gf6 8.c4 cb5 9.cb5 d6 10.Rc1 Qe7?? (better is 10...Qd8+/–) 11.Rc8+– (11.Rc8 Qd8 12.Rd8 Kd8 13.Nb6+–) 1–0. marekt – Barnsley, ChessWorld.net, 2003.

4.Bb2 e5 5.Be5 Be7 6.e3 0–0 7.Bb2 c6 8.bc6 (8.Be2 d5+/–) 8...dc6+= 9.Be2 Qb6 10.Qc1 Bg4 11.Nc3 Nbd7 12.0–0 Rfe8 13.h3 Bh5 14.Rb1 Qc7 15.Nd4 Bg6 16.f4 Bc5 17.Nf3 (17.Na4 Bd4 18.Bd4 b5+/–) 17...Ba7 (17...b5 18.Ne5+=) 18.Nh4+/– b5 (18...Ne4 19.Kh2+/– (worse is 19.Ng6 Nd2 20.Ne5 Be3 21.Kh1 Ne5 22.fe5 Qe5–/+)) 19.Ng6 hg6 20.Bf3 b4 21.Ne2 Rad8 22.c3 Ne4 (22...Qd6 23.Qc2+/–) 23.Be4+– ½–½. Fournier,Frederic – Stummerer,Alfred, corr B4/07/33, 2007.

4.Bb2 Be7 5.e3 b6 6.c4 0–0 7.Bd3!? h6 (7...Bb7=) 8.0–0 Bb7 9.Nc3 d5 10.cd5 ed5?! (10...Nd5 11.e4 Nb4 12.Bc4=) 11.a4 Nbd7 (11...c5!+=) 12.Qc2 Nc5 13.Bf5 Re8 14.d4 Ncd7 15.Ne5 Ne5? 16.de5 Nd7 17.e6 fe6 18.Be6 Kh8 19.Nd5 Bd5 20.Bd5 Ra7 21.Bf7 Rf8 22.Bg7!! Kg7 23.Qg6 Kh8 24.Qh6 1–0. Sternik,Ryszard – Lowry,Paul, email b4–01–05, 2001.

4.c4 d5 5.e3 Nbd7 6.Bb2 (--> 4.Bb2 d5 5.e3 Nbd7 6.c4).

4.d4 Ne4 5.e3 (5.a3 d5 6.Nfd2 Nd6 7.e3 c6 8.Nc3 Bd7 9.Rb1=) 5...d5 6.Bd3 Bb4 7.Bd2 Nd2 8.Nbd2 0–0 9.0–0 =.

4.g3 Be7 5.Bg2 0–0 6.0–0 c6 7.a4 (7.Nc3 d5 8.e3 Ne4=) 7...cb5 8.ab5 d5 9.d4 Bd7 (9...Nbd7 10.Qd3+=) 10.Qd3+= Ne4 11.Ba3 (11.Ne5 f5 12.f3 Nd6+=) 11...Nd6 12.Nc3 Qc7 (12...Be8!?+/–) 13.Ne5 Rc8 14.Bc5 b6 15.Bd5 Ra7 (15...bc5 16.Ba8 cd4 17.Ne4 (worse is 17.Nd7 Nd7 18.Bc6 Ne5 19.Qd4 Nc6 20.bc6 Qc6+=) 17...Bb5 18.Qd4+=) 16.Rfb1 (16.Rab1 A) 16...ed5 17.Nd5 Bf5 18.Bd6 (18.Nc7?! Bd3 19.Bb6 Rac7 20.Bc7 Bc2 21.Bd6 Bd6+=) 18...Qd6 19.Qf5+–; B) 16...a4 17.Bf3 a3+– (17...bc5 18.b6 Qb7 19.Bb7 Rb7 20.d5+–)) 16...Qd8 (16...bc5?? 17.b6 cd4 A) 18.ba7 Qa7 19.Nd7 A1) worse is 19...Qd7 20.Na4 (20.Qd4? Bf6 21.Qa4 Qa4 22.Ra4 Bc3–+; worse is 20.Ra5 Qc7 21.Bb7 Rd8–/+) 20...Qa7 21.Nb6+/–; A2) 19...Nd7–/+; B) 18.bc7 Rac7 19.Qd4+– (worse is 19.Nd7 Nd7 20.Nb5 Nc5 21.Qd4 Nb5 22.Rb5 ed5 23.Raa5 Ne6 24.Qd5 Rc2+–); 16...ed5 17.Nd5 Bf5 18.Bd6 (18.Nc7 Bd3 19.Bb6 Rac7 20.Bc7 Bc2 21.Bb8 Rb8+–) 18...Bd6 19.Qf5 Qc2 20.e4 Be5 21.Rb2 (worse is 21.de5 Rb7+–; 21.Qe5?! Nd7 22.Qd6 Re8+–) 21...Bd4 22.Rc2 Rc2 23.e5+–) 17.Bd6 Bd6 18.Bf3 Be5 19.de5 Be8 20.Qd8 Rd8 21.Na4 Nd7 22.Rd1 Rb8 23.Bc6 Kf8 24.f4 Nc5 25.Nc5 bc5 26.Be8 Ke8 27.c4 Rd8 28.Rdb1 Rda8 (28...Kd7 29.Ra4+–) 29.Ra4 Kd7 30.Kf2 Rb8 (30...Kc8 31.Rba1+–) 31.Rba1 Rba8 32.Rd1 Kc8 33.Rd6 Kb7 34.e4 g6 35.Kf3 Rc8 36.Kg4 h6 37.f5 ef5 38.ef5 h5 39.Kf4 gf5 40.Kf5 Raa8 41.Rd7 Rc7 42.Rc7 Kc7 43.Kf6 Re8 44.Ra5 Re6 45.Kf5 Kb7 46.Ra6! (46.Ra6 Re8 47.Rf6+–) 1–0. gtate (2620) – huimre (2765), net–chess.com, 2007.

4.Bb2 c5

5.a4 b6 6.c4 Bb7 7.d3 (7.Nc3 d5 8.e3 Nbd7=) 7...Be7 8.e3 0–0 9.Be2 d5 10.Nbd2 Nbd7 11.0–0 Bd6 12.Qc2 Qe7 13.e4 (13.h3 h6=) 13...d4+= 14.g3 g6 15.Rae1 e5 16.Nh4 Ne8 17.Bg4 Ndf6 18.Bh3 Bc8 19.Bc8 Rc8 20.Bc1 Ng7 21.Ng2 Rce8 22.f4 Nd7 (22...Ng4 23.f5=) 23.f5 f6 (23...Qd8 24.Nb3=) 24.g4+= g5 (24...Rd8 25.Nb3+=) 25.h4 h6 26.Nf3 Kf7 27.Kf2 Rh8 28.Rh1 Rh7?? (better is 28...Reg8+=) 29.hg5+– fg5 30.Ng5! (30.Ng5 hg5 31.Rh7+–) 1–0. Nadanian,Ashot – Wang Hao, Internet Chess Club 3m + 0s blitz, 2006.

5.bc6 bc6 6.e3 d5 7.Be2 Nbd7 8.c4 Bd6 9.0–0 0–0 10.d4 Ba6 11.cd5 cd5 12.Ba3 Be2 13.Qe2 Qe7 ½–½. Roselli Mailhe,Bernardo (2410) – Izquierdo,Daniel (2285), Montevideo, 2001.

4.Bb2 d5

5.a4 c6 6.c4 cb5 7.cb5 Bb4 8.e3 Qd6 9.Be2 Bd7 (9...Nbd7 10.Ba3=) 10.0–0 0–0 11.Bf6 gf6 12.d4 e5 13.de5 fe5 14.Nbd2 e4 (14...Rc8 15.Rc1=) 15.Nd4+= Bc3 16.Rc1 Bd4 17.ed4 Bf5 18.Bh5 Bg6 19.Nb3 Nd7 20.Nc5 Nc5 21.dc5 Qe5 22.Qg4?? (22.Bg4 f5 23.f4 Qe6+=) 22...d4?? (better is 22...Qh5 23.Qg3 d4–+) 23.Bg6= fg6 24.c6 bc6 25.Rc6 Rac8?? 26.Qd7 Rc6 27.Qc6 d3 28.Qc4 Kg7 29.b6 d2 30.Rd1?? Rd8 31.h3 e3 32.Qc7?? Kh6?? 33.Qe5+– (33...ef2 34.Kf2+–) 1–0. metal – FrankieRivers, caissa.com, 2007.

5.a4 Nbd7 6.e3 Bd6 7.Be2 Nb6 0–1. chessclub (2280) – pigjones (2425), net–chess.com, 2012.

5.c4 c6?! 6.e3 Nbd7.

5.d3 Nbd7 6.Nbd2 Be7 7.g3 0–0 8.Bg2 Nb6 9.a4 Nfd7 10.0–0 f5 11.c4+= Bf6 12.Bf6 Qf6 13.Qc2 Qe7 14.Rfc1 dc4 15.Nc4 Nd5 16.Ne3 N7f6 17.Nd5 Nd5 18.Ne5 Qd6 19.Nc4 Nb4 20.Qc3 Qe7 21.Ne5 c6 22.bc6 bc6 23.Nc6 Nc6 24.Bc6 Bb7 25.Bb7 Qb7+/– 26.Qe5 Qd5+– 27.Qd5 ed5 28.Rc5 Rfe8 29.Kf1 Red8 30.Rb1 Ra6 31.Rbb5 Rh6 32.h4 f4 33.Rd5 Rf8 34.Rf5 (34...Rf5 35.Rf5 fg3 36.fg3+–) 1–0. Valenta,Vit – Koudela,J (1955), Morava–ch U20, 1992.

5.e3 c6 6.c4 Nbd7 7.a4 Bb4 8.Be2 0–0 9.0–0 cb5 10.cb5 Nc5 11.d3 Bd7 (11...Ncd7 12.Ba3+=) 12.Nbd2 (12.Nc3 Qe7+=) 12...Rc8= 13.Bf6 Qf6 14.d4 Ne4 15.Ne4 de4 16.Ne5 Qe7 17.f3 Rc3 18.fe4 (worse is 18.Nd7 Qd7 19.Kf2 Qe7–/+) 18...Re3 19.Bf3 (worse is 19.Nd7 Qd7 20.d5 Re4 21.de6 Qe6–/+) 19...Rd8 20.Rc1 Be8 21.Nc4 (better is 21.Ng4!? Rc3 22.Rc3 Bc3 23.d5=) 21...Rc3–/+ 22.Kh1 Qc7 23.Be2 Rc1 24.Qc1 Rd4 25.e5 b6 26.Rf4?? (better is 26.Qc2+=) 26...Bd2!–+ 27.Qb2 (27.Nd2 Qc1 Double attack (27...Qc1 Pinning; 27...Qc1 Deflection; 27...Rf4 Decoy; 27...Rf4 Interception)) 27...Rf4 (worse is 27...Bf4 28.Qd4 Bg5 29.Qb6 Qb6 30.Nb6+/–) 28.Qd2 Rc4 (28...Rc4 29.Bc4 Qc4–+) 0–1. Petukhov,Nikolay (1815) – Pimenov,Revolt (2180), Obninsk op, 2009.

5.e3 Bd7 6.Bd3 Bd6 7.Nc3 (7.Be5 0–0=) 7...0–0 8.0–0 Ng4 (8...e5 9.Be2+=) 9.h3 Nh6 (9...Nf6 10.Ne2=) 10.e4+= c6 11.Re1 Qc7 12.Qe2 e5? (better is 12...a4+=) 13.ed5+– Re8 (13...cb5 14.Nb5 Bb5 15.Bb5 Qc2 16.Be5 Be5 17.Qe5+–) 14.dc6 Bh3?? (14...bc6 15.Ne4 Nf5+–) 15.cb7 (worse is 15.gh3 bc6 16.Ne4 f6+–) 15...Qb7 (15...Ra7 16.gh3 Rb7 17.Be4+–) 16.Be4 Qc8 17.Ba8 Bg2 18.Kg2 Qg4 19.Kh1 Qh3 20.Nh2 e4 21.f4 Bf4 22.Ne4 Ng4 23.Nf6! gf6 24.Qg4 Qg4 25.Re8 (25.Re8 Kg7 26.Ng4+–) 1–0. marre – lomoff, internet, 2010.

5.e3 Qe7 6.Ba3 Qd8 7.Bf8 Kf8 8.c4 Ne4 (8...g6!?+=) 9.Qc2+/– Qf6 10.d4 c6 11.Bd3 Ng5 (11...Nd6 12.cd5 cd5 13.Nbd2+/–) 12.Nfd2+– dc4? (better is 12...e5 13.cd5 ed4+–) 13.Nc4 c5 (13...e5 14.de5 Qd8 15.0–0+–) 14.Nb6 cd4 (14...Nd7 15.Na8 e5 16.de5 Qe5+–) 15.Qc8 Ke7 16.Qb7 Nd7 17.Nd7 de3 18.Nf6 Kf6 19.fe3 Rab8 20.Rf1 Nf3 21.Rf3 Kg5 1–0. BlackDemon (2610) – Kabarote, FICS rated standard game, 2013.

5.e3 Be7 6.c4 0–0 7.Be2 c6 8.Nc3 Bd7 9.d4 (9.cd5 Nd5 10.Nd5 ed5 11.bc6 Nc6=) 9...cb5 (9...dc4 10.bc6 Bc6 11.Bc4=) 10.cb5 Qb6 (10...a4 11.a3= (11.Na4? Qa5 12.Nc3 Ne4–+)) 11.0–0+= Ne4 (11...Rc8 12.Rc1+=) 12.a4 (12.Ne4 de4 13.Ne5 a4+=) 12...Nc3 13.Bc3 f6 (13...Rc8 14.Qd2+=) 14.Qd2 (14.Rc1 Ba3 15.Rc2 Be8+=) 14...Bd6 15.Bd3 (15.Rfc1 Be8+=) 15...Be8 (15...Rc8 16.Rac1+=) 16.Qc2 h6 17.Bb2 Nd7 18.Rac1 Bh5 19.Nd2 Rfe8 (19...f5 20.Nb3+=) 20.Nb3 Qd8 21.f3 Kh8 (21...Nb6 22.Nc5 Rc8 23.Qb3+=) 22.Qd2 (22.Qb1 Qb8 23.h3 Nb6+=) 22...e5 (22...Nb6 23.Bc3 Na4 24.Ba5+=) 23.Bf5 (23.de5 Ne5 24.Bb1 Nc4+=) 23...ed4 (23...Nb6 24.Na5 Qe7 25.Bc2+/–) 24.Bd4 Ne5 25.Qf2 (25.Rc2 Nc4 26.Qd3 Qe7+=) 25...Nc4 26.Rfd1 (26.Nd2 Bf7+=) 26...Qe7 27.Qh4 Qf7 (27...Bf7 28.Rd3+=) 28.e4 de4 (28...Ba3 29.Ra1 de4 30.Be4+=) 29.Be4 Ba3 30.Rc3 Bb2 31.Rcd3 Re4 32.Qe4 (worse is 32.fe4 Bd1 33.Rd1 Ne3–/+) 32...Bg6 33.Qe1 (33.Qg4 Re8=) 33...Bd3 34.Rd3 Qg6 35.Qe2 Re8 36.Qc2 Na3 (36...Bd4 37.Nd4 Re1 38.Kf2=) 37.Qd1 (37.Qb2?? Qd3 38.h3 Nc4–+) 37...Nc4 38.Qc2 (38.Bf2 Be5 39.Rd7 Nb2=) ½–½. Malmstroem,Jan – Lacassagne,Jean, corr TKM/A008, 1999.

5.e3 Be7 6.d4 Nbd7 7.Nbd2 c5 8.c4 dc4 9.Nc4 cd4 10.ed4 Bb4 11.Nfd2 Nb6 12.a3 Bd2 13.Qd2 0–0 14.Bd3 Nc4 15.Bc4 b6 16.0–0 Bb7 17.Rfe1 Bd5 18.Bd3 Qd6 19.Re5 Rfc8 20.Rae1 g6 21.Qg5 Nd7 22.R5e3 Rc7 23.h4 f6 24.Qh6 Qf8 25.Qf4 Rac8 26.h5 g5 27.Qg3 h6 28.Re6 Be6 29.Re6 Qf7 30.Qg4 Nf8 31.Rb6 Rc1 32.Bc1 Rc1 33.Bf1 Qc4 34.Rf6 Qf1 35.Kh2 Qh1 36.Kg3 Rc3 37.Rf3 Rf3 38.Kf3 Qc1 39.Qe4 Qa3 40.Kg4 Qd6 41.g3? (better is 41.Qe5 Qd7 42.Kf3–/+) 41...Qd7–+ 42.Qf5 a4 43.b6 Qf5 (43...Qd4 44.f4 Qd1 45.Kh3 Qh5 46.Kg2 Qe2 47.Kh3 Qf1 48.Kh2 Qf2 49.Kh3 Qb6 50.fg5 a3–+) 44.Kf5 Nd7 45.b7 a3 46.Ke6 Nb8 47.Kd6 a2 48.Kc7 Na6 49.Kb6 a1Q 50.d5 Qe5 51.Ka6 Qb8 52.Kb6 Kf7 53.Kc6 Ke7 54.Kb6 Qd6 55.Ka7 Qc7 56.f4. Kossobudzki,Robert – Rajlich,Iweta, Memorial Anderssena Wroclaw Poland (year?). (=1.Nf3 Nf6 2.b4 a5 3.b5 e6 4.e3 d5 5.Bb2 Be7)

5.e3 Be7 6.Be2 0–0 7.0–0 c5 8.bc6 bc6 9.c4 Ba6 10.d4 Nbd7 11.Ba3 Nb6 12.Ne5 Rc8 13.Be7 Qe7 14.c5 Be2 15.Qe2 Nbd7 16.Nd7 Qd7 17.Nc3 Qc7 18.f4 Nd7 19.e4 de4 20.Ne4+= Nf6 21.Nf6+/– gf6 22.Rad1 f5 23.Rd3 Qe7 24.Qe5 f6 25.Qe1 Ra8 26.Qc3 Rfd8 27.Re1 Rd5 28.Rg3 Kf7 29.Qf3 Rg8 30.Qh5+– Kf8 31.Qh6 Rg7 32.Rge3 e5 33.fe5 fe5 34.Re5 Re5 35.Re5 Qd7 36.Qf6 Kg8 37.Rf5 h6 38.h3 Kh7 39.Rf4 Qd5 40.Qf5 Qf5 41.Rf5 Rd7 42.Rf4 Kg6 43.Kf2 Rb7 44.Ke3 a4 45.d5 cd5 46.Ra4 Rb2 47.Kd4 Kf6 48.Kd5 Rg2 49.Rf4 Ke7 50.a4 Kd8 51.Kc6 Rg6 52.Kb7 Rg7 53.Kb6 Kc8 54.c6 Rg8 55.Rf7 h5 56.Ra7 (56...Kb8 57.c7 Kc8 58.Ra8 Kd7 59.Rg8 Ke6 60.c8Q Ke5 61.Qc5 Kf4 62.Qf2 Ke4 63.Re8 Kd3 64.Kc5 h4 65.Re3#) 1–0. Vokac,Marek (2450) – Polak,Tomas (2410), Plzen, 1992.

5.e3 g6 6.c4 dc4 (6...Nbd7 7.cd5 ed5 8.Nc3=) 7.Bc4 Bg7 (7...Nbd7 8.0–0+=) 8.0–0 0–0 9.a4 (9.d4 Nd5+=) 9...b6 10.Nc3 Bb7 11.Ne5 c5= 12.d4 cd4 13.ed4 Nbd7 14.f4 Rc8= 15.Qb3? Re8 16.Rad1= Nf8 17.d5 ed5 18.Bd3?? d4?? 19.Ne2?? Ne4?? 20.Be4 Be4 21.Rd4 Qe7 22.Re4 Be5 23.Re5 Qc7 24.Re8 Re8 25.Nd4 Nd7 26.Nc6 Nc5 27.Qc3 f5 28.Qh8 Kf7 29.Qh7 Ke6 30.Qc7 Kd5 31.Rd1 Kc4 32.Qf7 Re6 (33.Nd4 Kb4 34.Ne6 Ne6 35.Qe6 g5 36.Rd4 Kc5 37.Qf5#) +–. bby – Putte16, Live Game Caissa's Web, 2004.

5.g3 a4 A) 6.a3 A1) 6...Nbd7 7.Bg2 (7.d3 c6 8.bc6 bc6 9.Bg2; 7.Nc3 e5 8.Bg2 Bd6 9.0–0) 7...Ra5 8.Nc3 e5 9.e3; A2) 6...Bc5 7.e3 0–0 8.d4 Be7 9.c4; A3) 6...Bd6 7.Be5 (7.c4 dc4 8.Qc2 e5 9.Be5; 7.e3 0–0 8.c4 dc4 9.Bc4) 7...0–0 8.d4 Be5 9.Ne5; B) 6.c4 B1) 6...dc4 7.e3 (7.Qc2 a3 8.Be5 Nbd7 9.Bg2; 7.Qc1 Qd5 8.Bf6 gf6 9.Nc3) 7...Bd6 8.Bc4 0–0 9.0–0; B2) 6...Bd6 7.Qc1 (7.cd5 ed5 8.Bg2 0–0 9.0–0; 7.Qc2 a3 8.Be5 Be5 9.Ne5) 7...Nbd7 8.Bg2 0–0 9.0–0; B3) 6...a3 7.Bd4 (7.Bf6 Qf6 8.Nc3 d4 9.Ne4; 7.Be5 Nbd7 8.e3 Ne5 9.Ne5) 7...c5 8.Be3 dc4 9.Qc1; C) 6.e3 C1) 6...Bd6 7.Be5 (7.Be2 Nbd7 8.0–0 e5 9.Ba3; 7.c4 0–0 8.Be5 Be5 9.Ne5) 7...Be5 8.Ne5 Nbd7 9.d4; C2) 6...Be7 7.Be2 (7.a3 0–0 8.c4 Nbd7 9.Bf6; 7.Bd3 a3 8.Be5 0–0 9.Nc3) 7...0–0 8.0–0 a3 9.Bf6; C3) 6...Nbd7 7.c4 (7.Be2 Bd6 8.0–0 e5 9.Ba3; 7.Bg2 Bd6 8.Nd4 Nb6 9.0–0) 7...a3 8.Bc3 Bd6 9.d4.

5.g3 Bc5 A) 6.Bg2 A1) 6...0–0 7.0–0 (7.d4 Bb4 8.c3 Bd6 9.Ba3) 7...c6 8.Nc3 Qb6 9.d4; A2) 6...Nbd7 7.0–0 (7.d4 Bb4 8.c3 Be7 9.0–0) 7...0–0 8.d4 Bb4 9.Qd3; A3) 6...c6 7.d4 (7.bc6 Nc6 8.0–0 0–0 9.Ba3; 7.Ba3 Bb6 8.bc6 Nc6 9.0–0) 7...Bb4 8.c3 Be7 9.bc6; B) 6.e3 B1) 6...0–0 7.d4 Bd6 8.Ba3 Ba3 9.Na3; B2) 6...Nbd7 7.d4 (7.Bg2 0–0 8.d4 Bb4 9.c3; 7.Be2 0–0 8.d4 Bb4 9.c3) 7...Bd6 8.c4 dc4 9.Bc4; B3) 6...a4 7.Be2 (7.d4 Bb4 8.c3 a3 9.Bc1; 7.a3 0–0 8.d4 Be7 9.c4) 7...Nbd7 8.0–0 Bd6 9.Nd4; C) 6.d4 C1) 6...Be7 7.e3 (7.Ba3 Ba3 8.Na3 Qd6 9.Qc1; 7.Bg2 Bd7 8.a4 c6 9.Nc3) 7...0–0 8.Bd3 c6 9.Ba3; C2) 6...Bf8 7.e3 a4 8.a3 c6 9.c4; C3) 6...Bd6 7.e3 (7.Qd3 c5 8.dc5 Bc5 9.Bg2; 7.Ba3 Ba3 8.Na3 Qd6 9.Qc1) 7...Ne4 8.Bd3 0–0 9.0–0.

5.g3 c6 6.e3 (6.a4 A) 6...Bd7 7.e3 (7.Nc3 Bc5 8.e3 0–0 9.Ne5) 7...Be7 8.Nc3 0–0 9.Ne5; B) 6...cb5 7.ab5 Bd6 8.Na3 Nbd7 9.Bg2; C) 6...Bc5 7.Ba3 (7.e3 0–0 8.d4 Bb4 9.c3; 7.d4 Bb4 8.c3 Be7 9.Ba3) 7...Bb6 8.d4 Ne4 9.e3; 6.Nc3 Bd6 7.bc6 (7.Rb1 e5 8.bc6 bc6 9.Bg2; 7.Bg2 e5 8.bc6 bc6 9.0–0) 7...bc6 8.Bg2 0–0 9.0–0) 6...Bd6 (6...Be7 7.Ne5 (7.Nc3 0–0 8.Rb1 Bd6 9.Bg2; 7.h3 0–0 8.Nc3 Nbd7 9.Bg2) 7...0–0 8.Be2 cb5 9.Bb5) 7.Nc3 (7.Be5 0–0+= 8.d4 Ne4 9.Bd6; 7.Ne5 0–0 8.f4 Ne4 9.d3; 7.d4 cb5 8.Bb5 Bd7 9.Bd3) 7...0–0 (7...e5 8.bc6 bc6 9.Rb1) 8.Bg2 (8.bc6 bc6 9.Rb1) 8...e5 9.0–0 Re8 10.d3 a4 11.Rb1 Qa5 12.Ba1 Nbd7 13.bc6 bc6 14.Ne2 Ba6 15.Bc3 Qc7 16.Qd2 Nc5 (16...Rab8 17.Nh4+=) 17.Bb4 (17.Nh4 Bc8+=) 17...e4–/+ 18.Bc5 Bc5 19.Nfd4 Bb6 20.Rfc1 Ba5 21.Qd1 Red8 22.Rb2 c5 23.Nb5 Qe7 24.a3 c4 25.Rcb1 (25.Ned4!?+=) 25...Bb5–/+ 26.Rb5 cd3 (26...Qa3?! 27.Ra1 Qe7 28.Ra4+=) 27.cd3 Qa3 28.Nd4 Bc3 (28...ed3 29.Nc6 Qc3 30.Nd8 Bd8 31.Rb8+/–; 28...Qd3?! 29.Qd3 ed3 30.Nc6=) 29.Nc6 Rdc8 30.Bh3 Rc6 (30...Re8!?–/+) 31.Rb8 Qf8 32.Rf8 Kf8 33.de4 a3 (worse is 33...de4 34.Bd7 Rca6 35.Bb5+=) 34.Qc2 de4 35.Qa2 Rd6 (35...Be5 36.Kg2+=) 36.Rb7 Rd1 37.Bf1 Nd7 38.Rc7 Bb2 39.Kg2 Ne5 40.Bc4 (40.Bb5!?+=) 40...Rc1–/+ (40...Nc4 41.Qc4 Kg8 42.Rf7+–) 41.Bd5 Rc7 42.Ba8 f5 43.Qe6 g6 44.Bd5 (44.Qd6 Re7+=) 44...Kg7–/+ 45.Qg8 Kh6 46.Qf8 Rg7 47.Be6 ½–½. Karl Gill – muess26, ChessWorld.net, 2009.

5.g3 Bd6 A) 6.a4 A1) 6...0–0 7.Bg2 Nbd7 8.Ba3 Ba3 9.Na3; A2) 6...Nbd7 7.Bg2 (7.Ba3 Qe7 8.Bg2 e5 9.0–0; 7.Bh3 0–0 8.0–0 e5 9.Bg2) 7...e5 8.Ba3 e4 9.Nd4; A3) 6...Qe7 7.Bg2 (7.Ba3 0–0 8.d4 Ne4 9.Bd6; 7.Be5 Nbd7 8.Bd6 Qd6 9.Bg2) 7...e5 8.Ba3 0–0 9.0–0; B) 6.Bg2 B1) 6...c6 7.a4 (7.Na3 e5 8.0–0 e4 9.Nd4; 7.bc6 Nc6 8.Na3 e5 9.Nb5) 7...cb5 8.ab5 Bd7 9.Nc3; B2) 6...Qe7 7.Ne5 (7.0–0 e5 8.c4 dc4 9.Qc2) 7...0–0 8.0–0 a4 9.e3; B3) 6...0–0 7.0–0 Nbd7 8.d4 Nb6 9.Ne5.

5.c4 dc4

6.e3 Qd5 7.Qc2 Qb5 8.Bf6 gf6 9.Bc4 =+.

6.e3 Nbd7 7.Bc4= Nb6 8.Qc2 Bb4 9.0–0 Nc4 10.Qc4 0–0 11.d4 Bd7 12.Nc3 Ne8 13.a4 Nd6 14.Qd3 Bc3 15.Bc3 c6 16.Ne5 cb5=+ 17.Nd7 Qd7 18.ab5 Qb5 19.Qb5 Nb5 20.Ba5 Rfc8 21.Rfc1 Rc1–/+ 22.Rc1 Kf8 23.Bb4 Ke8 24.g4 Kd7 25.Bc5 Ra2 26.Kg2 Rd2 27.Rb1 Kc6 28.Rc1 Kd7 29.h4 Ra2 30.Kg3 f6 31.f4 Nc7 32.Kf3 b5 33.Rb1 Kc6 34.Ke4 Nd5= 35.Kf3 Rh2 36.Ra1 Rh3–/+ 37.Kf2 Ne3 38.Ra6 Kd5 39.Rd6 Kc4 40.Re6 Ng4 41.Kg2 Rc3 42.Rb6 Ne3 43.Kf2 Nf5 44.h5 Nd4 45.Bd4–/+ Kd4 46.Rb5 Ke4 47.h6 (47.Rb4!? Kd5 48.Rb8–/+) 0–1. Spiegel,M – Rossbach,Werner, corr SOK–88–21, 1988.

6.e3 Nbd7 7.Bc4 Nb6 8.Qc2?! Bb4?! 9.Be2 Nc4 10.Qc4 0–0.

6.e3 Nbd7 7.Bc4 Nb6 8.Qc2?! Nc4?! 9.0–0.

6.e3 Nbd7 7.Bc4 Nb6 8.Be2?! Nc4?! 9.0–0.

5.e3 b6

6.c4 A) 6...c6 A1) 7.bc6 Nc6 8.cd5 Nd5 9.Nc3 Nc3 10.Bc3 Bd7; A2) 7.cd5 cd5 (7...Nd5 8.e4 Nc7 9.Nc3 Bd7 10.bc6 Nc6; 7...ed5 8.bc6 Nc6 9.Bb5 Bd7 10.Bf6 Qf6) 8.Bd3 Nbd7 9.Bc2 Bd6 10.d4 Qe7; A3) 7.Be5 Bd6 (7...cb5 8.cd5 Nd5 9.Bb5 Bd7 10.Bc4 Nc6; 7...Bb7 8.cd5 cd5 9.d4 Nbd7 10.Bf4 Bb4; 7...Nfd7 8.Bf4 dc4 9.Nc3 Bb4 10.Bc4 0–0; 7...c5 8.Nc3 Nbd7 9.Bg3 Be7 10.cd5 Nd5) 8.bc6 Nc6 9.Qa4 Bb7 10.cd5 ed5; A4) 7.Nc3 Bb7 (7...Bd6 8.bc6 Nc6 9.cd5 ed5 10.Bb5 Bb7) 8.Rc1 dc4 9.Bc4 Bd6 10.0–0 0–0; B) 6...Bd6 B1) 7.Be5 Nbd7 (7...Bb7 8.cd5 Bd5 9.Nc3 0–0 10.Rc1 Be5; 7...0–0 8.d4 Bb4 9.Nbd2 Nbd7 10.Bf6 Nf6) 8.Bd6 cd6 9.d4 dc4 10.Bc4 Bb7; B2) 7.Bf6 Qf6 8.Nc3 dc4 9.Bc4 Bb7 10.d4 c5; B3) 7.d4 0–0 (7...Bb7 8.cd5 Nd5 9.Nc3 a4 10.a3 Nc3; 7...c6 8.Ne5 Bb7 9.cd5 Nd5 10.Bd3 Qh4) 8.Bd3 dc4 9.Bc4 Bb7 10.0–0 c6; B4) 7.Be2 0–0 (7...dc4 8.Na3 c3 9.dc3 a4 10.Nc4 a3; 7...Bb7 8.cd5 Nd5 9.0–0 0–0 10.d4 c6; 7...c6 8.cd5 cd5 9.0–0 0–0 10.Be5 Ne4; 7...c5 8.d4 0–0 9.dc5 Bc5 10.0–0 Bb7) 8.0–0 Bb7 9.d4 c6 10.Nc3 dc4.

6.Be2 Bb4 A) 7.Ne5 0–0 (7...Bb7 8.a3 Bd6 9.0–0 0–0 10.f4 c5; 7...Nfd7 8.0–0 0–0 9.a3 Bd6 10.f4 c5; 7...Bd6 8.0–0 0–0 9.c4 Bb7 10.d4 c5; 7...a4 8.0–0 0–0 9.d4 a3 10.Bc3 Bd6) 8.0–0 Bb7 9.f4 c6 10.a3 Bd6; B) 7.a3 Bd6 (7...Be7 8.Ne5 0–0 9.0–0 Bb7 10.f4 Ne4) 8.0–0 0–0 9.Ne5 Bb7 10.f4 c5; C) 7.Be5 Nbd7 (7...Nfd7 8.Bg7 Rg8 9.Bb2 Rg2 10.Nc3 a4) 8.0–0 Ne5 9.Ne5 0–0 10.d4 Bd6; D) 7.0–0 0–0 (7...Bb7 8.Nc3 0–0 9.a3 Bd6 10.Nd4 c5; 7...Bd6 8.Be5 0–0 9.d4 c5 10.Nbd2 Be5) 8.a3 Bd6 9.Ne5 c5 10.f4 Bb7.

6.Be2 Bd6 A) 7.Be5 0–0 (7...c6 8.Nc3 Ne4 9.Bd6 Qd6 10.Na4 Nd7; 7...Bb7 8.0–0 0–0 9.d4 c5 10.Nbd2 a4; 7...Nbd7 8.Bd6 cd6 9.0–0 0–0 10.d4 e5; 7...a4 8.0–0 0–0 9.d4 c5 10.c4 dc4) 8.d4 c6 9.Bd6 Qd6 10.Nc3 Nbd7; B) 7.a3 0–0 (7...c5 8.bc6 Nc6 9.Nc3 e5 10.Nb5 Bg4; 7...c6 8.0–0 0–0 9.Nc3 e5 10.d4 e4; 7...Bb7 8.0–0 0–0 9.Be5 Be5 10.Ne5 c5; 7...Nbd7 8.Nd4 0–0 9.0–0 Qe8 10.Nc6 Bb7) 8.0–0 c5 9.bc6 Nc6 10.Nc3 e5; C) 7.Ne5 0–0 (7...Bb7 8.0–0 0–0 9.f4 c5 10.bc6 Nc6; 7...Nfd7 8.Nd7 Bd7 9.0–0 0–0 10.f4 Qe8; 7...a4 8.f4 Ne4 9.0–0 f6 10.d3 Nc5) 8.0–0 c5 9.f4 Bb7 10.c4 Nfd7; D) 7.0–0= 0–0 (7...c6 8.Nc3 a4 9.bc6 a3 10.c7 Bc7; 7...c5 8.bc6 Nc6 9.Na3 0–0 10.Nb5 e5; 7...Bb7 8.Be5 0–0 9.d4 c5 10.Nbd2 a4) 8.Be5 c6 9.Bd6 Qd6 10.bc6 Nc6.

6.Be2 Bd7 7.c4 (7.0–0 Bd6= (7...Be7 8.Nc3 Bd6 9.Na4 0–0 10.c4 Ra7; 7...c6 8.Nc3 Bd6 9.bc6 Nc6 10.Nb5 Be7; 7...Bb4 8.Be5 0–0 9.a3 Be7 10.c4 dc4) 8.Be5 Be5 9.Ne5 c6 10.a4 0–0; 7.Ne5 Bd6 (7...Be7 8.0–0 0–0 9.c4 c6 10.Nc3 dc4; 7...c6 8.c4 Be7 9.cd5 ed5 10.Nc3 c5; 7...Bb4 8.0–0 0–0 9.c4 c6 10.Nd7 Nfd7; 7...c5 8.Bh5 Nh5 9.Qh5 Qe7 10.Na3 Bc8) 8.0–0 0–0 9.c4 a4 10.Na3 Qe7; 7.Be5 Ne4 (7...c6 8.Nc3 Ne4 9.Ne4 de4 10.Nd4 c5; 7...Ng4 8.Bf4 Be7 9.Nc3 0–0 10.0–0 a4; 7...Be7 8.0–0 0–0 9.c4 dc4 10.Bc4 c6) 8.d3 Nd6 9.c4 f6 10.Bb2 Be7; 7.a4 Bd6 (7...Be7 8.Be5 0–0 9.0–0 c6 10.Nc3 Ne4; 7...Bb4 8.0–0 0–0 9.Be5 Ng4 10.Bf4 Nf6; 7...Bc5 8.Be5 0–0 9.d4 Be7 10.0–0 Ng4; 7...c6 8.0–0 Bd6 9.Be5 Be5 10.Ne5 cb5) 8.Be5 Qe7 9.0–0 0–0 10.d4 Rc8) 7...dc4 (7...c6 8.Ne5 dc4 9.Bf3 Bd6 10.Nc4 Bc5; 7...Bd6 8.Ne5 0–0 9.0–0 a4 10.Na3 Qe7) 8.Bc4 Be7 (8...c6 9.Nc3= Bb4 10.Rb1 0–0) 9.Ne5+= 0–0 (9...c6 10.Qf3 Qc7) 10.0–0 (10.Qf3 Ra7) 10...Qe8 (10...Bc8 11.d4+=; 10...Ra7+=) 11.Qf3 c5?? (better is 11...Ra7 12.a4 c6+=) 12.Qa8+– Bb5 13.Nc3 Bc4 14.Nc4 Qd8 (14...Nbd7 15.Qc6+–) 15.Qf3 Nbd7 16.a4 (16.Rab1 Qb8+–) 16...Qb8 17.Nb5 Nd5 (17...Qa8 18.Qa8 Ra8 19.Rad1+–) 18.Rfd1 Nb4 19.d4 Qc8 (19...Bf6 20.Rd2+–) 20.dc5 Nc5 (20...Bc5 21.Rac1+–) 21.Nb6 Qa6 (21...Qc6 22.Qc6 Nc6 23.Nd7 Nd7 24.Rd7+–) 22.Nd7 Rd8 (22...Nd7 23.Rd7 Nd5+–) 23.Nc5 Rd1 24.Rd1 Bc5 25.Rd7 Bf8 (25...h5 26.Qf7 Kh7 27.Qg7) 26.Qf7 (26.Qf7 Kh8 27.Qf8) 1–0. pereira – styrij, internet, 2009.

6.Be2 Be7 A) 7.0–0 0–0 (7...Bb7 8.d4 0–0 9.c4 dc4 10.Bc4 c6) 8.d3 Bb7 9.c4 dc4 10.dc4 a4; B) 7.Ne5 0–0 (7...Bb7 8.0–0 0–0 9.d4 c6 10.Ba3 c5; 7...Bd6 8.0–0 0–0 9.f4 Bb7 10.c4 c5; 7...a4 8.a3 0–0 9.0–0 Bb7 10.c4 Nbd7) 8.0–0 Bb7 9.d4 Nbd7 10.c4 Ne5; C) 7.a3 0–0 (7...Bb7 8.0–0 0–0 9.d4 Nbd7 10.Bd3 c5; 7...c5 8.0–0 0–0 9.d3 Bb7 10.c4 Nbd7; 7...c6 8.Ne5 Bb7 9.0–0 0–0 10.Nc3 c5; 7...Bd6 8.Be5 0–0 9.d4 c5 10.0–0 c4) 8.0–0 c5 9.bc6 Nc6 10.Nc3 Ne4 ; D) 7.Nc3 0–0 (7...c5 8.bc6 Nc6 9.0–0 0–0 10.Rb1 Ba6) 8.Ne5 a4 9.a3 Bb7 10.0–0 c5.

5.e3 Bd6

6.c4 c6 7.d4 Bb4 8.Nbd2 e5 9.de5+/– Ne4 10.a3 Nd2 11.Nd2 Bd2 12.Qd2 Be6 13.Rd1 0–0 14.e4 Qh4 15.ed5 cd5 16.cd5 Qe4 17.Qe2 Bd5 18.Qe4 Be4 19.Rd4 Bf5 20.Bd3 Be6 21.f4 Nd7 22.f5 Bf5 23.Bf5 Ne5 24.0–0 Rfe8 25.Re4 Ng6 26.Re8 Re8 27.Bg6 hg6 28.Kf2 Rd8 29.Ke3 Re8 30.Kf3 (30...Rd8 31.Rc1+–) 1–0. Skaug,Thorbjoern – Fehr,Wolfgang, corr ICCF TT–4–90, 1990.

6.c4 c6 7.d4 dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Nc3 =.

6.c4 Nbd7 7.d4 c5 8.Nbd2 cd4 9.ed4 b6 10.Be2 Qc7 11.Rc1= Qb8 12.0–0 Bb7 13.cd5 Bd5=+ 14.Bc4 0–0 15.Qe2 Bf4 16.Ne5 Qd6 17.Rfd1 Rac8 18.g3 Bd2 19.Rd2 Bc4 20.Rc4 Rc4 21.Nc4 Qd5 22.Ba3 Rc8 23.Ne3 Qe4 24.f3 Qb1 25.Rd1 Qg6 26.d5 e5 27.d6 e4 28.f4 h5 29.Bb2+= Rd8 30.Nc4 Qf5 31.a4 h4 32.Ne3 Qh3 33.Qg2 Qg2 34.Kg2+= hg3 35.hg3 Ne8 36.Ba3 Rc8 37.Nd5 Rc2=+ 38.Kh3 Ra2 39.Bc1 Ra1 40.Nc3 f5 41.Kh4 Kf7 42.g4= g6 43.Kg5 Ng7 44.gf5 gf5 45.Bb2 Rd1 46.Nd1 Ne8 47.Be5 Ke6 48.Ne3 Nd6 49.Bd6 Kd6 50.Kf5 Nc5 51.Kg6 Na4 52.f5 Nc5 53.f6? Nd7–+ 54.Kf5 Kc5 55.f7–/+ Kd4 56.Ke6 Nf8 57.Ke7 Nh7 58.Ng4 e3 59.Nf6 e2 60.Nh7 e1Q 61.Kd7 Qf1 62.f8Q–/+ Qf8 63.Nf8 a4 64.Kc6 a3 65.Kb6 a2 66.Kc7 a1Q 67.b6 Kd5 (68.b7 Qa5 69.Kd7 Qb5 70.Ke7 Qb7 71.Kf6 Qb6 72.Kf7 Qc7 73.Kf6 Qe5 74.Kf7 Qh5 75.Ng6 Ke4–+) 0–1. Labahn,Wolfgang – Krueger,D, corr SOK–92–87, 1992.

6.d4 0–0 7.c4 b6 =.

6.d4 0–0 7.Bd3 c6 8.a4 cb5 9.ab5 Nbd7 10.0–0 Qc7 (10...a4 11.Ba3 Nb6 12.Ne5=) 11.Nbd2 Nb6 12.Ba3 Ba3 (12...a4 13.Qc1=) 13.Ra3+= Bd7 14.Ne5 Rfc8 15.c4 (15.Qf3 Qd6 16.Rfa1 Qb4+=) 15...dc4= 16.Ndc4 Nc4 17.Bc4 b6 (17...Be8 18.f4+=) 18.Qf3 Ra7 19.Ra4 Qd6 20.Rd1 (20.h3 Rac7+=) 20...Rac7 21.e4 (21.h3 Qe7 22.Re1 Ne8+=) 21...Qe7 22.Qe2 (22.Re1!?+=) 22...Ne8= 23.Bd3 Nd6 24.Nd7 Qd7 25.e5 Nf5 26.d5 ed5 27.Rf4 Nh6 28.Bc4 Nf5 (28...Rc4? 29.Rc4 Rc4 30.Qc4 dc4 31.Rd7+–) 29.Rd5 (29.Bd3 Nh6=) 29...Qd5+= 30.Bd5 Rc1 31.Qf1 R8c5 (31...Rf1 32.Kf1 Rc5 33.Rc4 (33.Rf5 Rd5 34.Rf3 Rb5–+) 33...Rc4 34.Bc4+=) 32.Rc4 (32.Rf5?? Rf1 33.Kf1 Rd5–+) 32...R5c4 33.Bc4 Rf1 34.Kf1 Kf8 (34...Nh4 35.f4+=) 35.Ke2= Ke7 36.f4 Nd4 (36...a4 37.Kd3=) 37.Kd3 Ne6 38.g3 Nc5 39.Kd4 ½–½. pcmvr (2745) – huimre (2870), net–chess.com, 2008.

6.d4 0–0 7.Bd3 c6 8.a4 Nbd7 9.0–0 Re8 10.c4 e5 (10...dc4 11.Bc4 cb5 12.Bb5=) 11.c5+= e4 12.cd6 ed3 13.Qd3 Ne4 (13...Nb6 14.Rc1 Qd6 15.Ne5+=) 14.Ba3+= Ndf6 (14...Qf6 15.Nc3+=) 15.Rc1 (15.bc6 bc6 16.Qc2 Nd6+=) 15...cb5 16.Qb5 Nd6 17.Bd6 Qd6 18.Ne5 (18.Nbd2 Re7+=) 18...Nd7 (18...Re7 19.Nd2+=) 19.Nc3+/– Rd8 (19...Nf6 20.Rab1+/–) 20.Qd5 Qd5 21.Nd5 Ne5 22.Ne7 Kf8+= 23.Nc8 Rac8 24.de5 Ke7 25.Rcb1 Rc7 26.Rb5 Rdc8 27.g3 Rc1+= 28.Rc1 Rc1 29.Kg2 b6 30.Rb6 Rc4 31.Ra6 Ra4 32.f4 Ra2 33.Kf3 Ra4 34.f5 Ra1 35.e6 fe6 36.Re6 Kd7 37.Ra6 a4 38.e4 a3 39.e5 a2 40.Kg4 Ke7 41.Ra7 Kf8 42.Ra8 Kf7 43.e6 Kf6 44.Rf8 Ke7 45.Rf7 Ke8 46.Ra7 Kf8 47.Kg5 Ke8 48.g4 Kf8 49.h4 Ke8 50.h5 h6 51.Kg6 Rg1 52.Kg7 a1Q 53.Ra1 Ra1 54.Kh6 Ke7 55.Kg5 Rh1? 56.h6 Rh2 57.Kg6 Rh1 58.h7 Rh2 59.Kg7 Rh4 60.h8Q Rg4 61.Kh7 Rh4 62.Kg8 (62.Kg8 Rh8 63.Kh8+–) 1–0. Stejskal,Drahoslav – Kubat,Jiri, CZE–ch U18 Loucovice, 1979.

6.d4 0–0 7.Bd3 Nbd7 8.0–0 Nb6 9.a4 Bd7 10.Nbd2 c5 11.dc5+= Bc5 12.Ng5 h6 13.Bf6 gf6 14.Nh7 Re8 15.Qh5 Kg7 16.Nb3 Bd6 17.f4 f5 18.Rf3 (18...Kh7 19.Qf7 Kh8 20.Rh3+–) 1–0. pcmvr (2785) – gmgenius (2370), net–chess.com, 2006.

6.d4 Nbd7 7.c4 0–0 8.Nc3 Re8 9.Be2 c6 (9...dc4!? 10.Bc4 Nb6=) 10.c5 Bc7 11.0–0 e5 12.a4 (12.de5 Ne5 13.Nd4 Qe7=) 12...Ng4 (12...e4 13.Nd2=) 13.b6 Bb8 14.h3 Ngf6 15.Qd2 Qe7 16.de5 (16.Rae1!?+=) 16...Ne5=+ 17.Ba3 Nf3 18.Bf3 Qe5 19.Rfe1 Qh2 20.Kf1 Bf5 21.Rad1 Ne4 22.Be4 Be4 23.Ne4 Re4–/+ 24.f3 Ra4–+ 25.Ra1 Bg3 26.Reb1 Qh1 27.Ke2 Qg2 28.Kd1 Qf3 29.Qe2 Qe4 30.Bb2 Qh1 31.Kd2 Ra1 32.Rh1 Rh1 33.Qg4 Be1 34.Kd3 g6 35.Qg2 Bb4 36.Qh1 Bc5 37.Qe1 Re8?? 38.Qa5+= Be3 39.Qa7 Bc5 40.Qb7 Re3 41.Kc2 Re2 42.Kb3 Re6 43.Qa8 (43...Bf8 44.b7 Re3 45.Ka2+–) 1–0. SuperForte – ChessMaster2000, 1994.

6.d4 Nbd7 7.Bd3 Bb4 8.c3 Bd6 =.

6.Be2 c5 7.0–0 Nbd7 8.d4 (8.d3 a4=) 8...Qc7 (8...0–0 9.c4=) 9.Nbd2 (9.dc5 Nc5 10.Bf6 gf6=) 9...b6 10.c4 Bb7 11.Rc1 Rc8 12.cd5 Bd5 13.Bd3 Be7 (13...Ba2? 14.Qa4 Bd5 15.e4+–) 14.e4 Bb7 15.Bb1 (15.Qc2 Qf4=) 15...Qb8 (15...0–0 16.e5 Nd5 17.Qe2=) 16.Re1 0–0 (16...cd4 17.e5 Nd5 18.Nc4=) 17.Nc4 (17.d5 Qf4=) 17...Rfd8 (17...cd4 18.Bd4 h5 19.Qe2+=) 18.Qc2 (18.Ba3 g6+=) 18...g6 19.d5 ed5 20.ed5 Re8 21.Re7 (21.Bf6!? Bf6 22.Qd2=) 21...Re7+= 22.d6 Re6 23.Nfe5 (23.Ng5!? Rd6 24.Nd6 Qd6 25.Rd1+=) 23...Ne5–/+ 24.Be5 Re5! 25.Ne5 Qd6 26.Nc4 Qe6 27.f3 (27.Qd2!?–/+) 27...Bd5 28.Nd2 (28.Qd3 Re8–+) 28...Qe2 (better is 28...Qe3 29.Kh1 Re8–+) 29.Qc3? (29.a4–/+) 29...Ng4!–+ 30.Be4?? (30.fg4 Qg2) 30...Ne3 31.Bd5 Qg2 0–1. Mrozinski,Werner – Berens,Thomas, Ruhrgebiet–ch, 2000. (=1.Nf3 Nf6 2.b4 a5 3.b5 d5 4.Bb2 e6 5.e3 Bd6)

6.Ne5 0–0 7.Be2 Nbd7 8.f4 Ne4 9.0–0 Ne5 10.fe5 (worse is 10.Be5 Be5 11.fe5 Qg5–/+) 10…Be7 (11.d3 Nc5=). Hunstock,J – Kruger,D, corr SOK–92–87, 1992.

6.c4 0–0

7.Be2 dc4 8.Bc4 c5 9.Qc2 h6 (9...Nbd7 10.e4 e5 11.0–0=) 10.Nc3 b6 11.Ne4 Be7 12.d4 (12.0–0 Bb7 13.d3 a4+=) 12...cd4 13.Nf6+= Bf6 14.Nd4 Bb7 15.0–0 Nd7 16.Rfd1 Qe7 (16...Rc8 17.Qe2 Qe7 18.Rac1=) 17.a4 (17.Nc6!? Qe8 18.Rd6+=) 17...Rac8= 18.Ba3 Nc5 19.Qa2 Rfd8 20.Rac1 Be5 21.Rc2? (better is 21.f4!? Bd6 22.Bb2=) 21...Qh4–/+ 22.f4 Bd4 23.Rd4?? (better is 23.ed4 Rd4 24.Rd4 Qe1 25.Bf1 Qe3 26.Kh1 Qd4 27.Rc4–+) 23…Qe1–+ (23...Qe1 24.Bf1 Qe3 25.Rf2 Rd4 26.Bc5 Rc5–+) 0–1. Ehrlich,Hans Georg (1910) – Lutterbey,Ralf (1865), Muensterland Verbandsliga, 2005.

7.Nc3 Nbd7

8.d4 Bb4 =.

8.Be2 dc4 9.Bc4 Nb6 10.Bb3 =.

8.Be2 c5 9.cd5 ed5 10.0–0 Nb6 11.Qc2 Bg4 12.Rac1 Rc8 13.Na4 Nc4 14.Bc4+= Bf3 15.gf3 dc4 16.Qc4 Nd7 17.Qg4 Ne5 18.Qg2 f6? 19.f4+– Nd3?? 20.Qd5 Kh8 21.Qd3 g5 22.Kh1 gf4 23.Rg1 fe3 24.de3 Qe7 25.Nb6 Rcd8 26.Nd5 Qe6 27.e4 Be5 28.Be5 fe5 29.Rg2 Rg8 30.Rcg1 Rg2 31.Rg2 Rg8 32.Rg3 Rf8 33.f4! h5 34.Rg5 Qh6 35.Qf3 Rf4?? 36.Qh5+– Rh4 37.Qe8 (37...Qf8 38.Qf8 Kh7 39.Qg7#) 1–0. Margraf,A – Fischer,Ernst, corr OU 9–1989, 1989.

6.Be2 0–0

7.0–0 Nbd7 8.c4 dc4 9.Bc4 Nb6 10.Be2 =.

7.0–0 Nbd7 8.c4 c5 9.d3 Qc7 10.Nbd2 b6 11.Rc1 Bb7 12.h3 Rac8 13.a3 h6 14.Qb3 Rfe8 15.Qc2 Qb8 16.Rfe1 Qa8 17.cd5 ed5 18.Nh4 g6 19.Nhf3+= Re6 20.Qc3 Rce8 21.Bf1 Qd8 22.a4 Qe7 23.Red1 Ne5 24.Nh2 Ned7 25.Nhf3 Kh7 26.Qc2 Nh5 27.g4 Ng7 28.Re1 f5 29.Bg2= Rf8 30.Nf1 fg4=+ 31.hg4 Ne5 32.Ne5 Be5 33.Be5 Re5 34.d4 Rg5 35.Nh2 h5?? 36.f4+– Rg4 37.Ng4 hg4 38.dc5 Qh4 39.c6 Bc8 40.Bd5 g3 41.Qg2 Nh5 42.c7 (42...g5 43.Qe4 Rf5 44.Qe7 Ng7 45.Bg2 Qh2 46.Kf1 gf4 47.Ke2 f3 48.Kd3 Qg2 49.Rh1 Kg8 50.Qd8 Kf7 51.Qc8 Rd5 52.Ke4 f2 53.Kf4 Nh5 54.Rh5 f1Q 55.Rf1 Qf1 56.Kg3 Qe1 57.Kf4 Qf2 58.Ke4 Qg2 59.Kf4 Qf1 60.Kg3 Qg1 61.Kf4 Qf2 62.Ke4 Qg2 63.Kf4 Qf1 64.Kg3=; 42.Red1 Nf6+–) 1–0. Gross,Wilhelm – Krueger,D, corr SOK–92–87, 1992.

7.0–0 Nbd7 8.d4 Nb6 9.a3 Bd7 10.Nbd2 Ne4 11.c4 Nc4 12.Bc4 Nd2 13.Nd2 dc4 14.Nc4? (better is 14.a4!?=) 14...Bb5–/+ 15.Qb3 Bc4 16.Qc4 Qh4 17.g3 Qh5 18.e4 b5 19.Qc6 Rab8 (better is 19...Qf3!?–/+) 20.e5= Be7 21.Qc7 Bg5 22.f4 (22.Qa5 Rfc8=) 22...Bh6?? (better is 22...Rbc8 23.Qb7 Rc2–/+) 23.Qa5+= Rfc8 24.Rac1 Qe2 25.Rc8 Rc8 26.Qa6 Re8 27.Bc1 g6 28.Qc6 Re7 29.Qd6 Bf8 30.Qd8 Ra7 (30...Ra7 31.f5! Qa2+– (31...gf5?? 32.Bh6 Qe3 33.Be3+–)) 0–1. typ48 – thornesmith, kurnik, 2012.

7.0–0 Nbd7 8.d4 Nb6 9.a4 Ne4 10.Nbd2 c6 11.Ne4 de4 12.Nd2 f5 13.c4 Rf6 (13...Qc7 14.h3 c5 15.dc5 Bc5 16.Nb3+=) 14.g3 Bc7 15.Nb3 Rg6 16.Qd2 Qh4 17.Rfb1 (17.Na5 f4 18.ef4 Qh3–+) 17...cb5 18.ab5 a4 19.Nc5 Qh3 (19...e5 20.de5 Qe7 21.Qd4+/–) 20.Bf1 Qh5 21.Qe2 Qh4 22.Qd1 e5 (22...Qg4!?+/–) 23.Na4+– Na4? (better is 23...Ra4 24.Ra4 ed4 25.Bd4 Na4 26.Qa4 Qd8+–) 24.Ra4 Ra4 25.Qa4 Qd8 (25...Qe7 26.Qa8 Qf8 27.de5+–) 26.de5 Be6 (26...Qe8 27.Qa8 Bb6 28.Ra1+–) 27.Rd1 Qb8 (27...Qe8 28.c5 h6 29.Be2+–) 28.c5 (28.c5 Qe8 29.Qa7+–) 1–0. Gretencord,Ulrich – Weidemann,Uwe, DESC GS003 email, 2006.

5.e3 Nbd7

6.a4 c5 7.c4 (7.bc6 bc6 8.Ne5 Ne5 9.Be5 Nd7=+) 7...b6 (7...Bd6 8.cd5 ed5 9.Nc3=+) 8.d3 (8.d4 cd4 9.Nd4 Bb4 10.Bc3 0–0=) 8...Bb7 (8...Bd6 9.cd5 ed5 10.Be2=+) 9.Nbd2 (9.Be2 dc4 10.dc4 Be7+=) 9...Bd6=+ 10.Be2 0–0 11.0–0 Qe7 12.Re1 (12.Rc1 e5=) 12...Rfe8 (12...e5 13.d4=+) 13.Bf1 (13.d4 e5=) 13...Rad8 14.Qc2 (14.Be2 e5=+) 14...Bc7 (14...e5 15.e4 de4 16.de4=) 15.Rad1 e5 16.cd5 Nd5 17.e4 (17.Ne4 f5 18.Nc3 Nc3 19.Qc3 Bf3 20.gf3 Qg5 21.Bg2 Nf6=+) 17...Nf4 18.Nc4 Qf6 19.Ne3 (19.Be2 Qg6 20.Bf1 f6=+) 19...Nf8 (19...Nh3 20.Kh1=+) 20.Ng4= Nh3 21.gh3 (better is 21.Kh1!? Qf4 22.Ne3=) 21...Qf3–/+ 22.Bg2 Qf4 23.Bc1 f5 (23...Ne6 24.Bf4 Nf4 25.Ne3+–) 24.Bf4 fg4 (24...ef4 25.Qc4 Ne6 26.ef5 Bg2 27.Re6+–) 25.Be3 (25.Bg5!? Rd4 26.hg4 Ne6+–) 25...gh3 (25...Bc8 26.hg4 Bg4 27.Rc1+–) 26.Bh3 Rd6 (26...Bd6 27.Bf5+–) 27.Qc4 Kh8 (27...Ne6 28.Bf5+–) 28.Qf7 (28...Be4 29.Qe8+–) 1–0. Lebel,Patrick (2165) – Wildemeersch,Gerard (1820), Hautes Alpes op 3rd, 2002.

6.a4 Be7 7.Be2 Nb6 8.d3 Bd7 9.c4 Bb4 10.Nbd2 c6 11.0–0 Qe7 12.Bd4 c5 13.Be5 Rc8 14.Nb3 0–0 15.Qc2 Be8 16.Qb2 (16.Bc3 dc4 17.dc4 Ra8+/–) 16...Nbd7+= 17.Bc3 Bc3 18.Qc3 b6 19.Ne5 Ne5 20.Qe5 Nd7 21.Qc3 Qd8 22.f4 f6 23.Bf3 Bf7 24.g3 Qc7 25.e4 ½–½. Streit,Bodo – Schreiber,Nico, Mecklenburg VP LL2, 2007.

6.c4 Nb6 7.cd5 ed5 8.Be2 Bd6 9.d3 0–0 10.Nbd2 Re8 11.0–0 c5 12.bc6 bc6 13.Qc2 Bd7 14.e4 de4 15.de4 Ng4 16.h3 Ne5 17.Ne5 Be5 18.Be5 Re5 19.f4 Re8 20.Bf3 Qh4 (20...Qf6 21.Qc5 Rab8 22.Rab1+=) 21.Qc5+= Nc8 (21...Qf4? 22.Bh5 Re5 23.Qb6 (23.Rf4?! Rc5 24.Bf7 Kh8+=; 23.Bf7?! Qf7 24.Qe5 Qe8+–) 23...Qd2 24.Rad1+–) 22.e5 Ne7 (22...Qf4? 23.Bc6 Qd2 24.Ba8+–) 23.Nc4 Be6 (23...Qf4?? 24.Bh5 Nd5 25.Rf4 Nf4 26.Bf3+–) 24.Nd6 (worse is 24.Bc6 Rec8 25.Na5 Bd5–/+) 24...Rf8 25.f5 (worse is 25.Bc6 Rfc8 26.Nc8 Rc8=) 25...Nf5 26.Nf5 (26.Bc6!? Ng3 27.Rf2+=) 26...Bf5= 27.Bc6 Rac8 28.Rf5 Rc6 29.Qc6 Qd4 30.Kh2 Qa1 31.e6 g6 (31...Qa2?? 32.e7 g6 33.ef8R (33.ef8N?! gf5 34.Qd6 Kg7+–) 33...Kf8 34.Qd6 Kg7 35.Qf6 Kg8 36.Rb5+–) 32.Ra5 Qf6 33.ef7 Qf7 34.Qd6 Qb7 35.Re5 Ra8 (35...Qf7!? 36.Re6 Qa7+/–) 36.Re7+– Qb8 37.Rc7 Qf8 38.Qd5 Kh8 39.Qd4 Kg8 40.Qc4 Kh8 41.Qc3 Kg8 42.Qc4 Kh8 43.Qd4 Kg8 44.Qd5 Kh8 45.Qe5 Kg8 46.Rb7 Rd8 47.Re7 Ra8 48.a4! Qb8?? 49.Rc7 Qf8 50.Re7 Qb8 1–0. Marton,Jozsef (2185) – Rako,Istvan (2150), HUN–chT2 Szechenyi, 2009. (=1.Nf3 Nf6 2.b4 a5 3.b5 e6 4.Bb2 d5 5.e3 Nbd7)

6.c4 dc4 7.Bc4 Nb6 8.Be2 Bd7 9.0–0 Be7 10.Nc3 a4 11.a3 0–0 12.Ne5 Be8 13.Qc2 Ra5 14.f4 Nfd7 15.Rad1 Ne5 16.fe5 c5 17.Rb1 c4 18.d3 Bb5 19.Nb5 Rb5 20.Bd4 cd3 21.Bd3 Rb1 22.Rb1 Nd5 23.Bh7 Kh8 24.Bd3 Ba3 25.Qa4. b4_player – story, casual, 2013.

6.c4 Nc5 7.cd5 Nd5 8.d4 Ne4 9.a3 Nf2?? (better is 9...Bd6=) 10.Kf2+– Qf6 (10...Bd6 11.Nc3+–) 11.e4 g6 (11...Nb6+–) 12.ed5 ed5 13.Bd3 Bg4 14.Qe1 Be7 15.Rf1 0–0–0 (15...Bf3 16.Kg1+–) 16.Kg1 Rhe8 (16...Bd6 17.Qa5 Kb8 18.Nbd2+–) 17.Qa5 Bf3 18.Rf3 Kd7 (18...Qe6+–) 19.Rf6 Ra8 20.Ra6 ba6 21.Nc3 ab5 22.Qb5 c6 23.Qb7 Kd6 24.Nb5! (24...cb5 25.Qb6 Kd7 26.Bb5 Kc8 27.Rc1 Bc5 28.Rc5#) 1–0. Trkn – Heebeejeeian, ICC, 2004.

6.c4 c6 7.a4 Bb4 8.Be2 Nb6 9.Ne5 Nc4 10.Nc4 dc4 11.Bc4 Bd7 12.Na3 0–0 13.0–0= Qe7 14.Qe2 e5 15.Nc2 c5 16.d4 ed4 17.ed4 Qe2= 18.Be2 Nd5 19.Bf3 Be6 20.Rfd1 c4= 21.Ba3 Ba3 22.Na3 Rac8 23.Rac1 c3 24.Rd3 Rfd8= 25.Bd5 Rd5 26.f3 Kf8 27.Kf2 Bf5 28.Rdc3+= Rc3 29.Rc3 Rd4 30.Nc4 Be6 31.Na5 b6 32.Nc6 Ra4 33.Rd3 Ra8 34.Rd6 Bc4 35.Nd4 Rb8 36.Ke3 g6 37.Kd2 Ke7+= 38.Rc6 Bd5 39.Kc3 Kd7= 40.Rf6 Ke7 41.Nc6 Kf6 42.Nb8 Ke6 43.Kd4 Bb7 44.Na6 Kd6 ½–½. Baecklin,Stefan – Sandqvist,Hugo, corr SSKK lag–SM, 1976.

6.c4 c6 7.a4 Bd6 8.d4 dc4 9.Bc4 0–0 10.0–0 Nb6 11.Bd3 Nbd5 12.g3 Nb4 13.Be2 Ne8 14.Nc3 f5 15.Rc1 Rf6 16.bc6 bc6 17.Qb3 Rb8 18.Qc4 Ba6 19.Nb5 cb5 20.ab5 Bb5 21.Qb5 Rb5 22.Bb5 Nc7 23.Be2 Ncd5 24.Ra1 h5 25.h4 Rg6 26.Kg2 f4 27.e4 fg3 28.ed5 gf2 29.Kf2 ed5 30.Ng5 Rf6 31.Kg2 Nc2 32.Rf6 gf6 33.Rc1 Ne3 34.Kf3 fg5 35.Ke3 Bf4 36.Kd3 Bc1 37.Bc1 gh4 38.Bh5 Qc8 39.Bd2 Qh3 40.Kc2 Qf5 0–1. ognos (1640) – mors32 (1700), kurnik, 2012.

6.c4 c6 7.Nc3 Be7 8.Rc1 (8.cd5 cd5 9.Be2 0–0+=) 8...0–0= 9.Be2 Nb6 10.cd5 cd5 (10...ed5 11.0–0+=) 11.Bd3 (11.0–0 a4+=) 11...a4 (11...Bd7 12.Ne5+=) 12.0–0+= Bd6 13.Ne2 Nbd7 14.Bc2 (14.Ng3 g6+=) 14...a3= 15.Bc3 Qb6 16.Rb1 e5 17.d3 (17.h3 Re8=) 17...Re8 18.h3 Nf8 19.Qd2 Ng6 20.Rfc1 Bd7 21.Ng3 h6 22.Bd1 Rac8 23.Be2 Qd8 (23...Bb5 24.d4 Rc4 25.de5 Be5 26.Be5 (26.Bc4?! dc4 27.Ne5 Ne5+–) 26...Ne5 27.Nd4+–) 24.Bb4 Rc1 25.Qc1 Bc7 (25...Bb4 26.Rb4 Qa5 27.Rb3=) 26.Ba3 e4 27.de4 Bg3 28.fg3 Ne4 29.g4 Qb6 30.Bc5?? (better is 30.Rb3=) 30...Nc5–+ 31.Nd4 Qd6 (31...Ne5 32.Ra1–+) 32.Ra1 (32.Qa3 Nh4 33.Nf3 Nf3 34.Bf3 d4 35.ed4 Qd4 36.Kh1 Bb5–+) 32...Ra8 33.a3 (33.a4 Ra4 34.Ra4 Na4–+) 33...Ne5 34.Qc2 (34.Ra2 b6–+) 34...Ne4 35.a4 h5! 36.g5 (36.gh5 Qf6 Combination) 36...h4 37.Qc1 (37.Qa2 Ng5 38.Qb1 Ne4–+) 37...Qe7 38.Nf3 (38.g6 Ng6 39.Bd3 Ng3–+) 38...Nf3 39.Bf3 Qg5 40.Be4 de4 41.Kh1 Qf6 (41...Qe5 42.Rb1 Ra4 43.Qd1 Bb5 44.Qd8 Be8 45.Qh4–+) 42.Rb1 (42.Ra3 Qd6–+) 42...Bh3! 43.Qf1 (43.gh3 Qf3 Double attack) 43...Bf5 44.Rb4 (44.Qf4 Ra4 45.Rd1 g6–+) 44...Qg5 45.Qf2 (45.Rc4 Be6 46.Rc1 Ra4–+) 45...Rd8 46.Rb1 h3 47.gh3 (47.g3 Rd3 48.Rf1–+) 47...Bh3 48.Kh2 Bc8 49.Rf1 Rd6 50.Qg3 Rh6 51.Kg2 Bh3 52.Kf2 Rf6 53.Qf4 Rf4 0–1. bla_ner (1910) – marekt (2150), gameknot.com, 2015.

6.c4 Be7 7.cd5 ed5 (worse is 7...Nd5 8.Bg7 Rg8 9.Bd4+/–) 8.Be2 a4 (8...0–0 9.0–0=) 9.Qc2+= a3 10.Bd4 0–0 11.0–0 Re8 12.Rc1 (12.Nc3 Nc5+=) 12...Bd6 13.Bd3 (13.Nc3 Ne5=) 13...b6= 14.Nc3 Bb7 15.Bf5 1–0. forsetinn (2355) – tallx (1900), gameknot.com, 2015.

6.d4 Bb4 7.c3 Bd6 8.Ba3 =.

6.d4 Nb6 7.Nbd2 Na4 8.Bc1 =.

6.d4 Nb6 7.Nbd2 Bd6 8.Be2 Na4=+ 9.Qc1 Nb2 10.Qb2 b6 11.0–0= Bb7 12.a4 Qe7 13.Rfc1 0–0 14.c4 Ne4 15.cd5 Nd2 16.Nd2 Bd5 17.Bf3 Bf3 18.Nf3+= Rfe8 19.Rc6 Rac8 20.Qc3 f6 21.e4 e5 ½–½. Schirmer – Meya, Dortmund GER, 1995.

6.d4 Nb6 7.Bd3 Bd6 =.

6.Be2 Be7 7.0–0 0–0 8.d4 a4 9.c4 c6 (9...a3 10.Bc3=) 10.Nc3 (10.Ba3 dc4 11.bc6 bc6 12.Bc4 Bb7=) 10...Qa5 (10...a3 11.Bc1=) 11.a3+= dc4 12.Bc4 Nb6 (12...c5 13.Qc2=) 13.Bd3 cb5 14.Nb5 Nbd5 15.Qe2 (15.Ne5 Bd7 16.Nd7 Nd7+=) 15...Bd7 16.Rfc1 (16.Ne5 Bb5 17.Bb5 Rac8+=) 16...Rfc8 17.h3 (17.Rab1 Bb5 18.Bb5 Nc3=) 17…h6 ½–½. Veer,Willem – Schinis,Mario, Luzern olm, 1982.

6.Ne5 Bd6 7.f4 0–0 =+.

6.Bf6 gf6 7.d4 =.

6.Bf6 Qf6+= 7.d4 a4 8.Bd3 Nb6 (8...e5 9.de5 Ne5 10.Ne5 Qe5 11.c3+=) 9.0–0= Bd7 10.Ne5 Bd6 11.f4 0–0 12.Nd2 Bb4 13.Nd7 Nd7 14.Nf3 Bc3 15.Rb1 h6 16.Ne5 Nb6 17.Qf3 a3 18.Rb3 Bb2 19.c4 dc4 20.Bc4 Ra4 21.Bd3 Qe7 (21...Rb8!?+/–) 22.Qb7 Nd5 23.Re1 Nc3 24.b6 Nd5 (24...Raa8 25.Nc4 Rfb8 26.Qc6+– (26.Qc7?! Qc7 27.bc7 Rb3 28.ab3 Rc8=)) 25.Bb5 (better is 25.Be4!? Raa8 26.Nc6+–) 25...Raa8+/– 26.bc7 Qc7 (26...Rac8!?+/–) 27.Qc7+– Nc7 28.Bc4 (28.Bc6!? Ra6+–) 28...Rfb8 29.Nd7 Rb3 30.Bb3 (30.ab3? a2–+) 30...Nb5 31.Nb6 (31.g4!?+/–) 31...Rb8+= 32.Nc4 Nc3 33.Rf1 Rb3 34.ab3 a2 35.Nd2?? (35.Nb2 Nb1 36.Nc4 a1Q–+) 35...a1Q (better is 35...Bc1! 36.Kh1 a1Q–+) 36.Ra1–/+ Ba1 37.Kf2 Nd5 38.g4 Bc3 39.Nc4 Kf8 40.Kf3 Ke7 41.e4 Nb4 (41...Bd4?! 42.ed5 ed5 43.Ne3=) 42.Ke3 g5 43.f5 Nc6 44.d5 ed5 45.ed5 Nb4 46.Ke4 Na6 47.d6 Kd7 48.Ne5 (better is 48.Kd5!?–/+) 48...Kd6–+ 49.Nf7 Ke7 50.Nh6 Kf6 51.Kd5 Kg7 52.Kc4 Be1 0–1. cmulligan (2250) – pigjones (2000), net–chess.com, 2012.

6.a4 Bd6

7.Nc3 =+.

7.d3 0–0+= 8.Be2 e5 9.Nbd2 Qe7 10.Nb3 (10.0–0 e4 11.de4 de4=) 10...c5 (10...Bb4 11.c3 Bd6 12.Qd2+=) 11.c4 b6 12.Qc2 e4 (12...dc4 13.dc4 e4 14.Nfd2=) 13.de4 (13.Nfd2 Bb7=) 13...de4+= 14.Nfd2 Bb7 15.0–0–0 Ne5 16.Nf1 Rad8 17.Ng3 Nd3 18.Bd3 Bg3 (18...ed3?! 19.Rd3 Be5 20.Be5 Qe5 21.Rhd1 Rd3 22.Rd3+=) 19.Bf1 Rd1 20.Kd1 Rd8 21.Kc1 Be5 22.Be2 (22.Be5 Qe5 23.Be2 Rd7–/+) 22...Bc8 (22...Nd7 23.Be5 Qe5 24.Bg4–/+) 23.h3+= h5 24.Rd1 Re8 25.Rd2 Bf5 26.Qd1 h4 27.Be5 Qe5 28.Kc2 Kf8 29.Rd6= Qe7 30.Rb6+/– Rd8 31.Qa1 Nd7 32.Rh6! Nf6 33.Rh4+– Kg8 34.Rf4 Bg6 35.Rf6! gf6 36.Na5 Qd6 37.Nb3 f5 38.g3 Bh5 39.Qf1 Bf3 40.a5 Qe5 41.a6 Rd3? 42.Nd4 cd4 43.Bd3 ed3 44.Kb3?? d2–+ 45.b6 Qa5 46.b7 d1Q 47.Qd1 Bd1 (47...Bd1 48.Kb2 Qc3 49.Ka2 Bb3 50.Ka3 Bc2 51.Ka2 Qb3 52.Ka1 Qa3#) 0–1. De Visser,Arno – Burggraaf, 1988.

7.d4 0–0 8.Nbd2 (8.Ba3 A) 8...Qe7 9.Bd6 (9.Bd3 Ba3 10.Ra3 e5 11.de5 Ne5 12.Ne5 Qe5) 9...Qd6 10.c4 e5 11.cd5 Nd5 12.Bc4 N5b6; B) 8...Ba3 9.Ra3 Qe7 10.Be2 e5 11.0–0 Rd8 12.de5 Ne5; 8.Bd3 A) 8...Qe7 9.0–0 (9.Nbd2 c5 10.bc6 bc6 11.0–0 c5 12.c4 cd4; 9.Ne5 Bb4 10.c3 Bd6 11.Ba3 Ba3 12.Ra3 Ne5) 9...e5 10.Nh4 g6 11.de5 Ne5 12.Nf3 Nf3; B) 8...Qe8 9.Ra2 (9.0–0 e5 10.de5 Ne5 11.Nbd2 Bg4 12.h3 Bh5; 9.Nbd2 e5 10.de5 Ne5 11.0–0 Bg4 12.h3 Bh5) 9...c6 10.0–0 Qe7 11.Nbd2 Rd8 12.c4 c5; C) 8...Ne8 9.Ba3 (9.c4 dc4 10.Bc4 Nef6 11.0–0 Nb6 12.Bd3 Nfd5; 9.0–0 c5 10.bc6 bc6 11.Nbd2 c5 12.c4 cd4) 9...c5 10.bc6 bc6 11.Bd6 Nd6 12.Nc3 Qf6; D) 8...Re8 9.0–0 (9.Ba3 Ba3 10.Na3 e5 11.de5 Ne5 12.Ne5 Re5; 9.Ne5 Bb4 10.Nd2 Ne5 11.de5 Nd7 12.0–0 Qg5) 9...e5 10.de5 Ne5 11.Ne5 Be5 12.Be5 Re5; E) 8...c5 9.dc5 Nc5 10.0–0 Rb8 11.Nbd2 Qe7 12.Be5 Rd8) 8...c5 9.c4 (9.dc5 Nc5 10.c4 b6 11.cd5 ed5 12.Be2 Bg4; 9.Be2 Qe7 10.dc5 Nc5 11.c4 e5 12.cd5 e4) 9...cd4 10.ed4 (10.Nd4 e5 11.N4f3 (11.Nc2 Nb6 12.c5 Bc5) 11...Qe7+= (11...e4 12.Nd4 Nc5) 12.Be2 dc4) 10...b6 (10...Re8 11.Be2 dc4 12.0–0 c3) 11.Bd3 dc4 12.Nc4 Bb4 13.Nfd2 Bb7 14.0–0 Rc8 15.Rc1 Nd5 16.Qh5 f5 17.g3 Rf6 18.Rfe1 Rh6 19.Qd1 Nf4 20.Bf1 (20.gf4 Rh2 21.Nf3 Rh3–/+) 20...Qg5 (20...Qh4 21.gh4 Rg6 22.Bg2 Rg2 23.Kf1 Rh2 24.f3 Rh1 25.Kf2 Nd3 26.Ke3 Re1 27.Kd3 Rd1 28.Rd1–/+) 21.f3 (21.Ne5!? Rd8 22.Nef3+=) 21…Qh5–/+ (21...Qh5 22.h4 Rg6–+) 0–1. Gary K – muess26, ChessWorld.net, 2009.

7.d4 c5 8.dc5 (8.Be2 cd4 9.ed4 0–0 10.Ba3 Ba3 11.Ra3 Re8 12.0–0 e5) 8...Nc5 (8...Bc5 9.Bd3 Qc7 10.0–0 e5 11.Nfd2 Bd6 12.Be2 0–0) 9.Be2 (9.Bd3 Rb8 10.0–0 0–0 11.Nbd2 Qe7 12.Be5 Rd8) 9...0–0 10.0–0 b6 11.Be5 Nfe4 12.Qd4 Be5.

7.d4 Ne4 =.

7.Be2 e5 8.c4 dc4 9.Na3 0–0 (9...e4!? 10.Nd4 Ba3 11.Ra3 Ne5+=) 10.Nc4= The pressure on e5 grows 10...Bb4 (10...e4!? 11.Nd4 Nc5=) 11.Nfe5 Ne5 12.Be5 Re8 13.0–0 Be6 14.d4 Bd5 15.Qc2 Rc8 16.Bd3 h6 17.e4 Bc4 18.Bc4 Ng4 19.Qb3 Ne5 20.de5 Qe7 21.Rac1 Rf8 (21...Bd2!? 22.Rcd1 Bf4+/–) 22.e6+– f5 23.Rcd1 Rcd8 (23...fe4?? 24.Rd7 Qh4 25.e7 Kh8 26.ef8R Rf8 27.Qb2+–) 24.ef5 Bd6 25.Qc2 Kh8 26.g3 b6 27.Kg2 Rf6 28.Rd5 Rdf8 29.Bd3 h5 30.h4 Rd8 31.Qe2 Rh6 32.Rd1 Re8 33.Be4 Qf6 34.Qc4 Re7 35.Rd6 cd6 36.Rd6 Qb2 (36...Re8+–) 37.Qc8 1–0. Janek – Zack, internet, 2016.

6.c4 a4

7.a3 dc4 8.Bc4 Nb6 9.Be2 =.

7.a3 Bd6 8.d4 c5 9.cd5 ed5 10.dc5 Nc5 11.Nbd2 0–0 12.Be2 Qe7 13.0–0 Bg4 14.h3 Bh5 15.Nh4 Be2 16.Qe2 Qe6 17.Ndf3 Rfe8 18.Nd4 Qe4 19.Nhf5 Be5 20.Rfd1 Nb3 21.Nb3 Qf5 22.Nd4 Qg6 23.Nf3 Bb2 24.Qb2 Rac8 25.Rac1. Schirmer,Michael (2135) – Binder,Klaus (1850), DESC, 2002.

7.cd5 ed5 8.Qc2 Bd6 9.Bd4 (9.Be2 0–0 10.0–0 Re8 11.Bd4 a3 12.Rc1 Qe7) 9...0–0 10.Be2 Re8 (10...a3 11.0–0 Qe7 12.Nc3 c5) 11.0–0 (11.Nc3 a3 12.0–0 c5) 11...Ne4 (11...a3 12.Nc3= (12.Rc1 Qe7) 12...c5) 12.d3 Nec5 (12...Nef6 13.Nc3=) 13.Nc3+= c6 14.bc6 bc6 15.Bc5 Nc5 16.d4 Ne4 17.Ne4 (17.Na4 Bf5 18.Bd3 Bg4+=) 17...de4= 18.Nd2 Qc7 (18...Qh4 19.g3 Qe7 20.Nc4=) 19.h3 Qe7 20.Rfb1 Ba6 21.Ba6 Ra6 22.Rc1 Ba3 23.Rf1 c5 24.d5 Bb4 25.Nc4 a3 26.d6 (26.Rad1 Ra7=) 26...Qe6= 27.Rab1 Raa8 28.Rb3 f6 (28...Ra7 29.Rfb1=) 29.Rfb1 f5 30.Qe2 Ra7 31.Kh2 h6 32.Kg1 g6 33.h4 Rf8 34.Rc1 Qf6 35.h5 gh5 36.Qh5 Kh7 37.Rd1 Qe6 38.Qe2 Rg8 39.Rbb1 Rag7 40.g3 Qf6 41.Qh5 Rg5 42.Qh3 f4 43.ef4+= Qf4 44.Rb3 Rf8 45.Qf1 Qg4 46.d7 Rd8 47.Ne3 Qe6 48.Qc4+/– Qc4 49.Nc4 Rg7 50.Ne5 Re7 51.f4 ef3 52.Rd5 Re5 53.Re5 Rd7 54.Rf3 c4 55.Rb5 Bd2 56.Rc5 c3 57.Rc6 Re7 58.Rf8 Be3 59.Kg2 Bd4 60.Kf3 Ra7 61.Rfc8 Be5 62.Ke4 Re7 63.Kf5 1–0. marekt – muess26, ChessWorld.net, 2009.

7.cd5 ed5 8.Bd4 A) 8...Bd6 9.Be2 (9.Nc3 a3 10.Be2 0–0 11.Rc1 Re8 12.0–0 Qe7; 9.Qc2 0–0 10.Be2 a3 11.0–0 Qe7 12.Re1 Re8) 9...0–0 10.Nc3 a3 11.0–0 c5 12.bc6 bc6; B) 8...Bc5 9.Be2 (9.Nc3 Bd4 10.Nd4 Nb6 11.Bd3 0–0 12.0–0 Re8; 9.Qc2 Bd4 10.Nd4 Nb6 11.Bd3 0–0 12.0–0 Re8) 9...Bd4 10.Nd4 0–0 11.0–0 Nb6 12.Qc2 Bg4.

7.cd5 ed5 8.Be2 Bd6 (8...a3 9.Bd4 c5 10.bc6 bc6 11.Qc1 Qc7 12.0–0 Bd6) 9.Bd4 (9.0–0 0–0 10.Bd4 c5 11.bc6 bc6 12.Nc3 a3) 9...c5 10.bc6 bc6 11.Nc3 a3 12.Rb1 0–0.

7.cd5 Nd5 A) 8.e4 Nf4 (8...N5f6 9.Qc2 Bb4 10.a3 Be7 11.d4 0–0 12.Bd3 Nh5) 9.Bd4 (9.Qc2 Bd6 10.Bg7 Rg8 11.Bc3 Ng2 12.Bg2 Rg2; 9.d4 Bd6 10.Qd2 Ng6 11.e5 Be7 12.Bd3 a3) 9...e5 10.Ne5 Nc5 11.Bc3 f6 12.g3 fe5; B) 8.a3 B1) 8...N7b6 9.Qc2 (9.Nc3 Nf6 10.d4 Be7 11.Bd3 0–0 12.0–0 Bd7 ; 9.Bd4 f6 10.Bb6 Nb6 11.d4 Bd7 12.Bd3 Bd6) 9...Bd7 10.e4 Nf6 11.Nc3 Be7 12.d4 c6; B2) 8...N7f6 9.Qc2 Be7 10.e4 Nf4 11.Nc3 0–0 12.Na4 Ng6; C) 8.Bd4 C1) 8...f6 9.e4 (9.Nc3 Bd6 10.Na4 e5 11.Bc4 Ne7 12.Bc3 e4) 9...N5b6 10.Be2 Bd6 11.0–0 e5 12.Be3 0–0; C2) 8...N5f6 9.Nc3 (9.Bf6 Qf6 10.Nc3 Nb6 11.Bd3 Nd5 12.Ne4 Qd8 ) 9...Bd6 10.Na4 0–0 11.Qc2 e5 12.Bc3 Qe7.

6.Be2 Bd6

7.0–0 0–0

8.a4 e5 9.d3 c5 10.c4 dc4 11.dc4 Qc7 12.g3 e4 13.Nfd2 b6 14.Nc3 Bb7 15.Qc2 Rfe8 16.Rad1 Rad8 17.Rfe1 Be5 18.Bf1 ½–½. Cornacchini,Gabriele – Dunn,Paul Michael (1775), IECC, 1999.

8.d3 c6 9.c4 cb5 10.cb5 b6 11.a4 Bb7 12.Nbd2 Rc8 13.Rc1 Qe7 14.Nb3 e5=+ 15.Rc8 Rc8 16.Qa1 e4 (17.Nfd2 Ne5=; 16...Qe6 17.Rc1=+). St_Jean,Benoit – Chvalovsky,Karel, CC.2003.0.00064, 2003.

8.d3 Qe7 9.Nbd2 =.

8.d4 c5 9.c4 b6 10.Nc3 Bb7 11.Na4 Ne4 12.Rc1 Rc8 13.Nd2 f5 14.f4 cd4 15.ed4 g5 16.Ne4= fe4 17.c5 Bf4 18.c6 Bc1–/+ 19.cd7? Be3–+ 20.Kh1 Rf1 21.Qf1 Rb8 22.Bg4 Qd7 23.Nb6 Qf7 24.Qf7 Kf7 25.Nd7 Rc8 26.Nc5 Rc5 27.dc5 Bc5 28.g3 d4 29.Kg2 e5 30.Kf1 Bd5 31.a4 Bc4 32.Ke1 Kg6 33.Be2 d3 34.Bd1 Kf5 35.h3 e3 36.Bg4 Ke4 37.Bd1 Bb4 38.Kf1 e2 39.Kf2 e1Q 40.Kg2 Qd2 41.Kg1 Qd1 (42.Kf2 Bc5 43.Bd4 Bd4 44.Kg2 Qg1#) 0–1. Gould,W – Platz,J, New Haven m, 1965.

8.d4 c6 =.

4.d4 d5

5.e3 c5 6.Ba3 Nbd7 7.c4 Be7 8.cd5 ed5 9.Be2 0–0 10.Nc3 c4 11.Be7 Qe7 12.Qc2 (12.0–0 Re8=) 12...Nb6+= 13.Ne5 (13.0–0 Ne8+=) 13...Ne8 14.0–0 f6 15.Nf3 Nd6 16.Nd2 Bf5 17.Qb2 Rfd8 18.Bf3 (18.h4 Qe6+=) 18...Nf7 19.a4 Rac8 20.Rac1 Ng5 21.Bh5 (21.Be2 Rc7+=) 21...Qb4 (21...Bd3 22.Rfe1+=) 22.Qa2 Bd3 23.Rfe1 g6 24.Bg4 (24.Be2 Kg7+=) 24...f5 25.Be2 Kg7 26.h4 (26.g3 Ne4 27.Nde4 fe4–/+) 26...Ne4–/+ 27.Nde4 de4 28.h5 (28.Qa1 Rc7–/+) 28...Nd5 29.Qa1 (29.Nd5 Rd5 30.Kh2 Rdd8–/+) 29...Nf6 30.hg6 (30.Qa2 gh5 31.f3 h4–/+) 30...hg6 31.Qa2? (better is 31.g3!?–/+) 31...Rh8–+ 32.Qa1? (32.Red1 Rh6 33.f3 Qd6–+) 32...Rh6 (32...Rh7 33.f4 Rch8 34.Kf2–+) 33.f3 (33.f4 Rch8 34.Kf2 Rh2–+) 33...Rch8 34.Kf2 (34.Bd3 cd3 (worse is 34...ed3 35.Kf2 d2 36.Red1 dc1R 37.Qc1–+) 35.Ne2 Nd5–+) 34...Rh2 35.fe4 (35.Rf1–+) 35...Qc3!! 36.Bd3 (36.Qc3 Ne4 Double attack (36...Ne4 Decoy); 36.Rc3 Ne4 Mate attack) 36...Qd3 37.d5 Rg2! 38.Kf3 Qe4 0–1. decu40 (1930) – cachisss (1940), gameknot.com, 2015.

5.e3 c6 6.c4 Bb4 7.Bd2 Be7 8.Nc3 0–0 9.c5 =.

5.Bf4 Bb4 6.c3 Be7 7.e3 0–0 8.Bd3 c6 9.a4 =.

4.e3 d5

5.Bb2 (--> 4.Bb2 d5 5.e3).

5.c4 Bb4 6.Be2 0–0 (6...dc4 7.Bc4 Nbd7 8.0–0=) 7.0–0 dc4 8.Bc4 b6 (8...c6 9.d4=) 9.Bb2 (9.d4 Bb7=) 9...Bb7 10.d4 c6 11.Ba3 Nbd7 12.bc6 Bc6 13.Bb4 ab4 14.Nbd2 Ba4 15.Qb1+= Qe7 16.Rc1 b5 17.Bd3 Rfc8 18.Qb2 Nd5 19.Ne4 f5+= 20.Ng3 Rc3 21.Qd2 N7b6 22.Ne5 Rac8 23.Ne2 Qc7 24.Nc3+– bc3 25.Qe2 b4 26.Ba6 Ra8 27.Bb5 Qa7 28.h3 Qa5 29.Bd3 Be8 30.Qf3 b3 31.ab3+– Qa1 32.Ra1 Ra1 33.Kh2 Ra2 34.e4 fe4 35.Qe4 g6 36.h4 Rf2 37.Ng4 Rf4 38.Qe6 Bf7 39.Nh6 Kg7 40.Nf7 Rf7 41.h5 Re7 42.Qg4 Ne3 43.h6 Kg8 1–0. Ganesan – Domenche Redondo, corr 3GMM–19, 1997.

5.Be2 Bd6 6.d4 Qe7 7.0–0 0–0 8.c4 dc4 9.Qc2 =.

5.Be2 Nbd7 =.

3.Nf3 g6

4.a4 Bg7 5.Bb2 d5 6.e3 0–0 7.c4 c6 8.c5 Nbd7 9.d4 Ne4 10.b6?? (better is 10.Qc2=) 10...Ndc5!–+ 11.dc5 (11.Nbd2 Nd2 12.Nd2 Na6–+) 11...Bb2 12.Ra2 Bc3 13.Nc3 Nc3 14.Qb3 Na2 15.Qa2 f6 16.Bd3 e5 17.Nd2 Qe7 Black prepares e4 18.Qa3 f5 Black intends e4 19.0–0 e4 20.Be2 f4 21.ef4 Rf4 22.Qe3 Qf8 23.Bd1 Bd7 24.Nb3 Qf7 25.Nd4 Rf8 26.Bb3 Qe7 27.Ne2 Rf3! 28.gf3 Rf3 29.Bd5 cd5 30.Qd2 Qc5 31.Nd4 e3 32.fe3 Rf1 33.Kf1 Ba4 34.Ne6 Qb6 35.Nf4 Qb1 36.Kf2 Qc2 37.Qc2 Bc2 38.Nd5 a4 0–1. Partikas,Valentinas A (2375) – Winfridsson,Ola, ICCF corr Baltic Sea tt–7 bd13, 2002. (=1.Nf3 Nf6 2.b4 a5 3.b5)

4.g3 c6 5.Na3 Bg7 6.Rb1 d5 7.c4 Nbd7 8.Bg2 0–0 9.0–0 Ne4 10.Bb2 =. Smyslov – Alvarez, Havana 1962.

4.Bb2 Bg7

5.e3 c6 6.a4 0–0 7.Be2 d5 8.0–0 Nbd7 9.c4 (9.d4 cb5 10.ab5 Nb6=) 9...Re8 (9...cb5 10.cb5 Nc5 11.Bd4=) 10.d4 dc4 11.Bc4 (11.Nbd2 cb5 12.ab5 c3 13.Bc3 Nd5+=) 11...Nb6 12.Be2 Nfd5 (12...cb5 13.Bb5 Bd7 14.Qb3+=) 13.bc6 bc6 14.Nc3 (14.Nbd2 c5+=) 14...Nc3 (14...Rb8 15.Qc2+=) 15.Bc3 ½–½. Vadasz,H – Portisch,Ferenc, Trnava, 1981. (=1.Nf3 Nf6 2.b4 a5 3.b5 g6 4.Bb2 Bg7)

5.e3 d6 6.Be2 e5 7.d4 Nbd7 8.c4 0–0 9.Nc3 Re8 10.0–0 ed4 11.ed4 (11.Nd4 Nc5=) 11...Nf8 (11...Nb6 12.Qb3=) 12.Re1 Bf5 'Twofold repetition' 13.Nh4 Bc8 (13...Be6 14.Bf3 N6d7 15.d5 Qh4 16.de6 Re6 17.Bb7 Rae8 18.Re6 fe6=; 13...Bd7 14.Qd2 a4 15.a3 Bc8 16.Nf3 d5 17.Rad1 Be6 18.c5 Ne4+=; 13...Bg4 14.Bg4 Re1 15.Qe1 Ng4 16.Nf3 Nf6 17.d5 Qd7 18.Ne4 Ne4+=) 14.Nf3 (14.Qd2 d5 15.Nf3 Bg4 16.h3 Be6 17.c5 Ne4 18.Qc2 Nd7=) 14...Bf5 15.Nh4 (15.Rc1 Bh6 16.Nd2 Ne6 17.Bf3 Nd4 18.Re8 Qe8=) 15…Bc8 ½–½. Tsvetkov,Alexandar K – Neikirkh,Oleg, BUL–ch, 1962.

4.c4 Bg7

5.Bb2 d6 6.e3 Nbd7 7.d4 0–0 8.Nc3 Re8 9.Be2 e5 10.de5 Ne5 11.Ne5 de5 12.Qb3 Bf5 13.Rd1 Qe7 14.Ba3 Qe6 15.0–0 e4 16.Bc5 Bg4= 17.Bd4 Be2 18.Ne2 a4 19.Qb4 Bf8 20.Bc5 Bc5 21.Qc5+= Qe5 22.Qe5 Re5 23.Nc3 a3 24.Rd4 Kg7 25.Rfd1 c6 26.Kf1 Re6 27.Ke1 h6 28.h3 Ree8 29.Ke2 Re5 30.Rb1 Re6 31.bc6 bc6 32.Rb3 Re5 33.Rd6 Ra6 34.Rb7 g5 35.Rc7 Ne8 36.Rcc6 Nd6 37.Ra6 Nc4 38.g4 Re8 39.Ra4 Nd6 40.Ra3 Kf6 41.Ra6 Ke5 42.Rc6 Ra8 43.Rc5 Ke6 44.a4 Ra6 45.a5 Nb7 46.Ne4 Ra5 47.Ra5 Na5 48.f4 gf4 49.ef4 Nc6 50.Ng3 Ne7 51.Ke3 Kd5 52.h4 f6 53.h5 Kd6. Van Rooijen,Peter – Warren,Robert, C2.2000.0.00282, 2000.

5.d4 d6 =.

5.e3 0–0 6.d4 d6 7.Nc3 e5 8.Be2 Nbd7 9.0–0 Re8 10.Qb3 e4 11.Nd2 +=. Ashwad (1820) – StephenHilton, internet, 2006.

5.Bb2 0–0

6.d4 d5 =.

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

6.g3 c6 7.a4 d5 8.c5 Bd7 9.Qb3 Qc8 10.d4 Bh3 11.Nbd2 Ne4 12.Ne4+= Bf1 13.Rf1 de4 14.Nd2 Rd8 15.Qe3 Qd7 16.Nc4 Qe6 17.Nb6 Ra7 18.d5 cd5 19.Bg7 Kg7 20.Rd1 Qe5 21.f4 Qh5 22.f5+/– gf5 23.Rd5+– Rd5 24.Nd5 Nc6 25.bc6 bc6 26.Nb6 f6 27.g4! fg4 28.Qe4 Qh4 29.Kd1 Qh3 30.Rg1 h5 31.Kd2 Qa3 32.Ra1?? Qa1–+ 0–1. Springall,JH – Harwood,Stanley, corr ENG–ch sf, 1986.

6.g3 c6 7.Bg2 =+.

6.g3 d5 7.cd5= Qd5 8.Nc3 Qc5 9.Bg2 Qb4 10.Qc1 Ne4 11.Rb1 Nd6 12.Nd5+– Bb2 13.Rb2 Qc4 14.Qc4 Nc4 15.Rc2 Nd6 16.Nc7 Bf5 17.d3 Ra7 18.b6 Ra6 19.Na6 Na6 20.Nd4 Bd7 21.0–0 Nb4 22.Rc7 (22...Rd8 23.Bb7 Nb7 24.Rb7+–) 1–0. Hakulinen,Heikki – Wolfram,Reinhard, corr 3GMM–47, 1994.

6.g3 d6 7.Bg2 e5 8.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5 7.d3 a5 8.b5).

4.d4 Bg7

5.Bb2 0–0 6.a4 d5 7.Nbd2 c6 (7...Nbd7 8.c4+=) 8.e3= Bf5 9.c4 Nbd7 10.bc6 bc6 11.cd5 cd5 (worse is 11...Nd5 12.e4 e5 13.Bc4+/–) 12.Ba3 Rc8 (12...Ne4 13.Rc1 Nd6 14.Be2+=) 13.Rc1 Nb6 (13...Ne4!?+=) 14.Ne5+= Bd7 Attacks the isolani on a4 15.Nd7 (15.Bb5 Be8+=) 15...Qd7 16.Bb5 Rc1 17.Qc1 Qg4 (17...Qb7 18.0–0+=) 18.0–0+/– Rc8 19.Qb1 e5 (better is 19...Qe6!?+=) 20.Ba6+– Rc6 21.Bb7 (21.de5 Nfd7 22.Bb5 Rc3+–) 21...Re6 22.h3 Qf5 (22...Qh5 23.de5 Qe5 24.Rc1+/–) 23.de5 (23.Nf3 Nfd7+/–) 23...Qe5+= 24.Rc1 Nfd7? (better is 24...d4!? 25.Bc6 de3 26.Qb6 ed2 27.Qd8 Re8 28.Qd2 Rc8+=) 25.Bc6+– h6 (25...Re8 26.Qb5 Rd8 27.Nf3+–) 26.Qb5 d4 27.ed4 (27.Bd7 Nd7 28.Qd7 de3 29.Rc8 Kh7 30.Qf7 ef2 31.Kh1 Qe1 32.Kh2 Qg1 33.Kg3 h5 34.Qe6 h4 35.Kf4 f1Q 36.Nf1 Qf1 37.Ke4 Qg2 38.Kd3 Qf1 39.Kc2 Qg2 40.Kb3 Qf3 41.Kc4 Qa3+–) 27...Qb5 28.Bb5 Bd4 29.Nb3 Bf6 30.Na5 Bg5 31.Rd1 Ne5 32.Rd6 Rd6 33.Bd6 Bf4 (33...Bd2 34.Nb7 Nec4 35.Bc5+–) 34.Bc5 (34.Nb7 Nc8 35.Bc5 g5+–) 34...Ned7?! (34...Nd5+–) 35.Bd4 Bc7 (35...Kf8 36.Nc6+–) 36.Nb3 (36.Nb7 Nf8+–) 36...Nf8 37.a5 Nc8 38.Bc6 (better is 38.Be3!? Kg7+–) 38...Ne6 39.Be3 Bb8 (39...Bf4+–) 40.Bd7 Na7 41.Be6 fe6 42.Bh6 1–0. Farkas,Miso – Jovanovic,Dusan P, Vojvodina Cup, 2008.

5.e3 0–0 6.c4 d6 (6...c5 7.Nc3=) 7.Be2 Nbd7 (7...Bf5 8.0–0=) 8.Bb2 e5 9.de5 de5 10.0–0 (10.Ne5 Ne4 11.Nd7 Bb2 12.Nf8 Qd1 13.Bd1 Kf8–+) 10...e4 11.Nd4 Re8 (11...Ne5 12.Nc3=) 12.Qc2+= Nc5 13.Nc3 Ng4 (13...Bg4 14.Rfd1 Be2 15.Nce2=) 14.Nd5 (14.h3 Ne5+=) 14...Qd6 (14...Ne5 15.Rab1=) 15.Bg4+/– Bg4 Black gets strong initiative 16.h3 (16.b6!? cb6 17.Nb5+–) 16...Bd7 (16...Be6 17.Ne6 fe6 18.Bg7 ed5+=) 17.Rad1 (17.Ba3!?+=) 17...Nd3= 18.Ba1 c6 19.Nf4 (19.Nb6 Rad8 20.Qc3 Qb4+=) 19...Nf4 20.Nf5 Qd3 (20...gf5 21.Rd6) 21.Rd3 ed3 22.Qd2 (better is 22.Nh6! Bh6 23.Qb2+/–) 22...Ne2+= 23.Kh1? (better is 23.Kh2 Bf5 24.Bg7 Kg7 25.g4 cb5 26.cb5 Bg4 27.hg4+=) 23...Bf5–+ (23...gf5? 24.Qd3 Ba1 25.Ra1+– (25.Qd7?! Bg7=; 25.Qe2 Be5–/+)) 24.Bg7 Kg7 25.bc6 bc6 26.Kh2 Red8 27.f3 Be6 28.c5 Bc4 29.e4 f6 30.Rb1 Rd7 31.h4 h6 32.g4 Rad8 33.Kg2 g5 34.hg5 hg5 35.Re1 Kg6 36.Kf2 Rh8 37.Ke3 Nd4 38.Rc1 Nc2 39.Rc2 dc2 40.Qc2 Rd3 (40...Rd3 41.Qd3 Bd3 42.Kd3 Rh2–+) 0–1. Marval – Garcia,R, Buenos Aires, 1990. (=1.Nf3 Nf6 2.b4 a5 3.b5 g6)

4.e3 Bg7

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

5.d4 0–0 6.c4 b6 7.Be2 Bb7 8.0–0 d6 9.Nc3 Nbd7 10.a4 Ne4 11.Ne4 Be4 12.Bd3 (12.Nd2 Bb7=) 12...Bd3 (12...Bb7 13.Bb2+=) 13.Qd3= e5 14.Bb2 Qe7 15.de5 Ne5 16.Ne5 Be5 17.Bd4 Rae8 18.Rad1 Qf6 19.h3 Re7 20.Rd2 Rfe8 21.Rfd1 Qh4 22.Qe2 f5 23.Qf3 Qf6 24.Qc6 (24.Be5 Re5 25.Qb7 Qf7=) 24...f4+= 25.Be5 Qe5 26.ef4 Qf4 27.Rd4?? (better is 27.g3 Qe4 28.Qd5 Kg7 29.Kf1+=) 27...Re1 0–1. phildo (1920) – baitang (1960), gameknot.com, 2014.

4.g3 Bg7

5.Bb2 0–0 6.Bg2 d6 7.0–0 e5 8.d3 Nbd7 9.c4 Re8 10.e4 a4 11.Nc3 Nc5 12.Ba3 Nfd7 13.Ne1 Nb6 14.Nc2 Ne6 15.Nd5... 1–0 (40.). Arnaudov – Kupka, 1971.

5.Bb2 0–0 6.Bg2 d6 7.d4 Nbd7 8.c4 e5 9.0–0 ed 10.Nd4 Re8 11.Qc2 Nc5 12.Nc3 Ne6 13.Ne6 fe 14.c5 d5 15.Rad1 c6 16.bc bc 17.Na4 Nd7 18.Bg7 Kg7 19.Rb1 Qf6 20.Nb6 Nb6 21.Rb6 Bd7 22.Rfb1 Rf8 23.e3 Rf7 24.Qb2 Qb2 25.R1b2 a4 26.Bf1 a3 27.R2b3 Ra5 28.Rc3 Be8 29.f4 Re7 30.Kf2 h6 31.Bd3 g5 32.Rb4 Kf6 33.e4 gf 34.gf e5 35.ed cd 36.Rb6 Kg7 37.fe d4 38.Rc4 Re5 39.Rb7 Kf6 40.Rd4 Rac5 41.Rf4 Kg5 42.h4 Kh5 43.Rg7 Rc3 44.Be4 Re4 45.Re4 Bc6 46.Rc7 Rc2 47.Re2 Rc4 48.Re3 Kh4 49.Re6 Rf4 50.Ke3 Rf3 51.Ke2 Bd5 52.Rh6 Kg5 53.Ra6 Rf5 54.Ra3 Kf4 55.Re7 Rh5 56.Ra4 Kf5 57.Kd3 Rh3 58.Re3 1–0. Barcza – Hecht, Hamburg 1965.

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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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