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1.b4 d5 2.Bb2 Qd6 3.a3 e5

(...)

4.Nc3 Nf6 5.Nf3 c6 (5...Bg4 6.h3 Bd7 7.e3=+) 6.e3= g6 (6...Be7 7.Be2=) 7.Be2 Nbd7 (7...Bg7 8.0–0=) 8.0–0 Bg7 9.d3 (9.d4 e4 10.Nd2 a5=) 9...0–0 10.Qd2 Re8 11.h3 (11.Rfe1 b6=) 11...h6 12.e4 (12.Rfd1=) 12...de4 (12...Qe6!?=+) 13.de4+= Qd2 14.Nd2 Nb6 15.f4 (15.Nc4 Nc4 16.Bc4 b5+=) 15...ef4 16.Rf4 g5 (16...Be6 17.Rd1=) 17.Rf2 Be6 18.Raf1 (18.a4 a5 19.b5 Rad8=) 18...Nfd7 19.Nf3 Nc4 20.Bc4 Bc4 21.Rd1 Ne5 22.Ne5 Be5 23.Rd7 Be6 24.Rd3 b5 25.Kh1 Bc4 26.Rd7 Be6 27.Rdd2 a5 28.Nd1 Bf4–/+ 29.Rd4 Be5 30.Rd3 Bf4 31.Rdf3 ab4–/+ 32.ab4 Bd6 33.Rf6 Kh7 34.Bc3 Ra4 35.Nb2 Ra1 36.Rf1 Ra3 37.Nd1 Be7 38.R6f3 Bc4 39.R1f2 Raa8 40.Ne3= Be6 41.Nf5 Bf8 42.Nd4 Rac8 43.Ne6+/– fe6 44.Rf7 Kg8 45.Be5 Re7 46.R7f6 Bg7 47.Rg6 Kh7 48.Rg7 Rg7 49.Bg7 Kg7 50.Rf3 Rd8 51.Rc3 Rd1=+ 52.Kh2 Rd4 53.Rc6 Re4=+ 54.c3 Kf6 55.Kg3 h5 56.Kf3 Rf4 57.Ke3 Rf5 58.c4= bc4 59.Rc4 Rb5 60.g4 h4 61.Ke4 Re5 62.Kd4 ½–½. Wall,Bill – Tanpil, internet, 2001.

4.c4 c6 5.d4 (5.Nf3 Nd7=) 5...e4 (5...dc4 6.de5 Qd1 7.Kd1=+) 6.cd5= White gets kings attack 6...cd5 7.Nc3 a6 8.Rc1 Ne7 9.e3 g6 (9...Nbc6 10.Be2=) 10.Qa4 Bd7 11.Nb5 Qb6? (better is 11...Bb5 12.Bb5 Nbc6+=) 12.Qa5+– Qa5 13.Nd6 (13.ba5?? Bb5 14.Rc7 Bf1 15.Kf1 Ra7–+) 13...Kd8 14.Nf7 (14.ba5?! Be6+/–) 14...Ke8 15.Nd6 (15.ba5? Kf7 16.Rc7 Ra7–+) 15...Kd8 16.ba5 Rg8 17.Nb7 Ke8 18.Nd6 Kd8 19.Be2 (19.Ne2 Nbc6 20.Nb7 Ke8+–) 19...Nbc6 (19...Ra7 20.f3 Nf5 21.Nf5 gf5 22.g3+/–) 20.Nb7 Kc7 21.Nc5 Bc8 22.h4 Rb8 23.Rc2 Bh6 (23...Kd6 24.Na6 Ba6 25.Ba6 Na5 26.a4+–) 24.Ba6 Ra8 25.Bb5 Ra5 26.a4 (26.Bf1 Kd8+–) 26...Nb4 (26...Ra7+–) 27.Na6 (27...Kd8 28.Nb4+–) 1–0. pierre (1905) – juanpacio (1675), internet, 2006.

4.d3 c6 5.Nf3 Nd7 6.g3 f5 (6...Ngf6 7.Bg2=+) 7.Bg2 Ngf6 8.0–0 Be7 9.c4 0–0 10.Nbd2 Nh5 11.e4 f4 (11...fe4 12.de4 Nhf6 13.ed5 cd5 14.cd5+/–) 12.Ne5 (better is 12.ed5!? Nhf6 13.gf4 ef4 14.dc6 bc6 15.Qb3+–) 12...Ne5= 13.Qh5 Nd3 14.e5 (14.c5 Qc7 15.Bd4 g6+/–) 14...Qg6 (14...Qd8!? 15.Bc3 dc4 16.Nc4 Rf5=+) 15.Qg6+= hg6 16.Bc3 Be6 17.cd5 cd5 18.Nb3 (18.Rad1 Rac8 19.Nb1 f3 20.Rd3 fg2 21.Kg2 Bf5+/–) 18...f3 19.Bh1 (19.Rfd1!? Ne5 20.Be5 fg2 21.Rac1+=) 19...Rac8=+ 20.Bd4 Rc2 (better is 20...Rf5!?=+) 21.Rad1 Nb2+= 22.Rc1 White gets the initiative 22...Rc1 23.Rc1 Nc4 24.Nc5 Bc5 25.Bc5 Rf7 26.Bd4 a6 27.Rc3+/– Bg4 28.h3 Bh3 29.Bf3 Bf5?? 30.Bd5+– (30...b5 31.f4+– (31.Bf7?! Kf7 32.f3 g5+–)) 1–0. yaunootz – juanpacio (1690), internet, 2006.

4.d3 f6 5.Nf3 Nh6 6.e3 Be7 7.Be2 0–0 8.0–0 Be6 9.Nbd2 Nd7 10.c4 c6 11.Qc2 Nf7 12.Rfc1 dc4 13.Nc4+= Qc7 14.d4 ½–½. Zarko,Ivica (2030) – Stefan,Kresimir (2215), Velika Gorica op 7th, 2007.

4.d4 Nc6 5.de5 (better is 5.e3 ed4 6.b5=) 5...Qg6 (better is 5...Ne5!? 6.Nd2 Nf6=) 6.Nc3 (better is 6.Nf3+=) 6...Qg4? (better is 6...Be6+=) 7.Nd5+– (7.Qd5?! Nge7 8.Qd1 a6+/–) 7...Kd8?? (7...Qd7+–) 8.Nf6 (8.Nf6 Qd7 9.Nd7 Bd7 10.e4+–) 1–0. Wall,Bill – Skulljagger, internet, 2003.

4.d4 ed4 5.Bd4 Nd7 (5...Nc6 6.Bc3=) 6.e3= a5 7.c3 (7.b5 Nh6=) 7...Ngf6 (7...Ne7 8.Nf3=) 8.Bd3 (8.Nf3 Qe6=) 8...ab4 (8...Ne5 9.Be2=) 9.cb4 Be7 (9...Ne5 10.Nf3 Nd3 11.Qd3=) 10.Nf3 0–0 (10...b6 11.Nc3 c5 12.Nb5=) 11.0–0 (11.Nc3 c5 12.Nb5 Qb6 13.bc5 Nc5=) 11...c6 12.Nc3 Re8 13.Qc2 Bd8 (13...Nf8 14.Na4 Bg4 15.Ne5+=) 14.Rfe1 ½–½. Sokolowski,Mieczyslaw – Pilczuk,Andrzej, corr 1AMM Poland, 1991.

4.e3 Bd7 5.d4 (5.Nf3 e4 6.Ne5 Be6=) 5...e4 (5...ed4 6.Bd4 Nc6 7.Bb2=) 6.c4 b6 (6...Nf6 7.Nc3=) 7.cd5 Qd5 8.Nc3 Qf5 9.Nge2 c6 (better is 9...Bd6!?+=) 10.Ng3+– Qg6 11.Nce4 Nf6 (11...Be6 12.Bd3 f5 13.Qf3+–) 12.Nf6 (12.Bd3 Nd5+–) 12...Qf6 13.Bd3 Bd6 (13...a5 14.ba5 Ra5 15.Qb3+–) 14.Ne4 Qe7 15.0–0 (15.Nd6 Qd6 16.Qc2 a5+–) 15...0–0 (15...Bc7 16.Qh5+–) 16.Nd6 Qd6 17.Qc2 g6 (17...f5 18.Rfd1+–) 18.e4 a5 (18...Be6 19.Rac1+–) 19.Qc3 f5?? (19...Bg4+–) 20.Bc4 (20.Bc4 Be6 21.d5+–) 1–0. Rosner,Dirk – Ramini,Edgardo, CiF, 2000.

4.e4 Nd7 5.c4 (5.ed5 Qd5 6.Nf3 Qe4 7.Be2 Qf4=) 5...c6 (5...de4!? 6.Nc3 Qc6+=) 6.cd5 cd5 7.Nf3 (7.ed5 Ngf6=) 7...Ne7 (better is 7...de4!? 8.Ng5 Qg6–/+) 8.Bb5 Ng6 9.0–0 (9.ed5 e4 10.Qe2 f5+= (10...Qd5? 11.Nc3 Qe6 12.Ne4+–)) 9...a6 (9...de4 10.Ng5 f5 11.Qb3=) 10.Be2 (10.Bd7 Bd7 11.ed5 Bg4+=) 10...Be7 11.d3 (11.ed5 Nf4=) 11...0–0 12.Nbd2 b5 13.Nb3 Bb7 14.Na5 Rab8 15.Nb7 Rb7 16.Qd2 Rc7 17.Rac1 Rfc8 18.Rc7 Rc7 19.h3 (19.Rc1 Nf6=) 19...Nb6 (better is 19...de4!? 20.de4 Nf4–/+) 20.Rc1= Na4 21.Rc7 Qc7 22.Ba1 Bf6 (22...d4 23.Bd1+=) 23.g3 d4 ½–½. Radwan,Jan (1690) – Witusik,Jerzy, Mistrzostwa Polski w Szachach Niepelnosprawnych Poland, 2009.

4.e4 de4=+ 5.d3 (5.Nc3 Nf6=+) 5...Nf6 (5...ed3 6.Bd3 Nc6 7.Nd2=+) 6.Nd2=+ ed3 7.Bd3 Bg4 (7...Nc6 8.Ngf3=+) 8.Ngf3 (8.Ne4 Bd1 9.Nd6 Bd6 10.Rd1 e4 11.Bb5 Ke7=+) 8...Nbd7 (8...Nc6 9.0–0=+) 9.0–0 (9.Qe2 a5 10.b5 Qe6=+) 9...Qe6 10.h3 (10.Re1 Bd6=+) 10...Bh5 11.Bc4 Qd6 12.Re1 (12.Qe1 0–0–0=) 12...Be7 (12...0–0–0!?=) 13.g4 Bg6 (13...Ng4 14.hg4 Bg4 15.Qe2+=) 14.Ne5 Ne5 15.Be5 Qd7 (15...Qb6 16.g5 Nh5 17.Nf3+=) 16.Bf6 gf6 17.Nb3 (17.Nf3 0–0–0 18.Qd7 Rd7+=) 17...Qd1 (17...0–0–0 18.Qd7 Rd7 19.Re2+=) 18.Rad1 Bc2 19.Rd2 Bb3 20.Bb3 Rd8 (20...f5!?+/–) 21.Rde2 Rd7 22.Ba4 c6 23.Bc2 h5 24.Kg2 Kf8 25.Bf5 Rc7 26.f3 c5= 27.bc5 Bc5 28.Re8 Kg7 29.Rh8 Kh8 30.a4 h4 31.Rc1 b6 32.Rc3 Re7 33.Kf1 Kg7 34.Rd3 Bb4 35.Rd4 a5 36.Re4 Rc7=+ 37.Re2 Rc1 38.Kg2 Bc5 39.Rd2 Ra1 40.Bd7 Rg1 41.Kh2= Rg3 42.Rd3 Bg1 43.Kh1 Bf2 44.Kh2 Kh6 45.Rd5 Rf3 46.Kg2 Rf4 47.Rf5 ½–½. Rohde,Friedhelm – Schmalstieg, corr WT–M–GT–346, 1994.

4.e4 Be6 5.Nc3 (5.ed5!? Qd5 6.Nf3 Qe4 7.Be2=) 5...d4=+ 6.Nce2 c5 7.bc5 Qc5 8.Ng3 (8.f4 Qb6 9.Qc1 Bc5=) 8...Qc6 (8...Qb6 9.Bc1=+) 9.Nf3= Nd7 10.Be2 (10.c3 dc3 11.Bc3 f6=) 10...Ngf6 (10...h5 11.h4=) 11.Ng5 (11.c3 dc3 12.Bc3 Ne4 13.Be5 Qd5= (13...Ne5? 14.Ne5 Ng3 15.Nc6 Nh1 16.Nd4+–)) 11...h6 (11...Bc4 12.Bc4 Qc4 13.d3=+) 12.Ne6= Qe6 13.0–0 a6 (13...Bc5 14.Bb5=) 14.d3 Be7 (14...Nb6 15.f4 Na4 16.Qb1=) 15.c3 (better is 15.Nf5 0–0 16.f4+=) 15...Bc5? (better is 15...dc3!? 16.Bc3 Rc8=) 16.cd4+/– ed4 17.Nf5 0–0 18.Bd4 (18.Nd4 Qe5 19.Nf5 Qb2–/+) 18...b5 19.Bc5 Nc5 20.f3 (20.Rc1 Rac8+/–) 20...Nh5 21.d4+– Rad8 22.Rc1 Na4 23.Rc6 Qd7 24.Ra6 Kh7? 25.Qb3 g6 26.Bb5 (26…Qc7 27.Rc6+–; 26.Qb5?! Nc3 27.Qd7 Ne2 28.Kf2 Rd7 29.Ke2 gf5+/–) 1–0. Wall,Bill – Laudemar, Internet, 2004.

4.Nf3 c5 5.Be5+/– Qg6 (5...Qe6 6.bc5 Nd7 7.Bc3+/–) 6.Nc3 Be6 7.bc5 Bc5 8.d4 (8.Qb1 Bb6+–) 8...Bb6 9.Nb5 Nd7 (9...Ba5 10.c3 Nc6 11.Nd6 Kf8 12.Rc1+–) 10.Bc7 (10.Nd6 Kf8 11.Qd2 Ngf6 12.Nb7 Ne4 13.Qb4 Kg8+–) 10...Kf8 (10...Bg4 11.e3+/–) 11.e3 (11.Bb6 Nb6 12.Ne5 Qf6+–) 11...Ngf6 (11...Bc7 12.Nc7 Rc8 13.Ne6 fe6 14.Rc1+–) 12.Bb6+– Nb6 13.Ne5 Qg5 14.h4 Qh6 15.Rb1 (15.g4 Ne4 16.Bg2 f6+–) 15...Ne4 (15...Nfd7 16.Nd6 Rb8 17.Bb5 Ne5 18.de5+–) 16.Qf3 a6?? (better is 16...Ke7 17.Na7! Ra7 18.Rb6 Nd6+–) 17.Nc7 Rc8 18.Ne6 Qe6 19.Rb6 Qe7 20.Bd3 Nf6 (20...Rc7 21.Be4 de4 22.Qe4+–) 21.0–0 Rc7 22.Rfb1 Kg8 23.c4 a5 (23...h6 24.cd5 Ne8 25.Nc4+–) 24.cd5 Ne8 25.Nc4 Qd7 (25...Rd7 26.d6 Qf8 27.Ne5+–) 26.d6 Nd6 27.Nd6 g6 28.Rb7 Qd6 29.Rc7 Qc7 30.Rb7 Qb7 31.Qb7 Kg7 32.Qc7 Ra8 33.d5 h6 34.d6 a4 35.d7 Rf8 36.Bc4 h5 (36...Ra8 37.Qe5 Kf8 38.Qf6 Kg8 39.Bf7 Kh7 40.Qg6 Kh8 41.Qh6) 37.d8Q Rd8 38.Qf7 (38.Qf7 Kh6 39.Qf4 Kg7 40.Qc7 Kh6 41.Qd8 Kg7 42.Qg8 Kf6 43.Qf7 Ke5 44.Qe6) 1–0. Mienekot – Good2ram2001, Yahoo, 2005.

4.Nf3 Be7?? 5.Be5+– (5.Ne5?! Nf6+=) 5...Qc6? (better is 5...Qg6 6.Bc7 Nf6+–) 6.Bg7 Bf6 7.Bh8 Bh8 8.d4 Be6 (8...Bf5 9.Ra2+–) 9.e3 Nf6 10.Bd3 Nbd7 11.Ng5 0–0–0 12.Nh7 (12.Bh7?! Nh7 13.Nh7 Rg8+–) 12...Bg4 13.f3 Nh7 14.fg4 Ng5 15.0–0 Re8 16.Rf5 f6 (16...Qh6 17.Nc3+– (17.Rd5?! Qe6 18.Rf5 Qe3 19.Kh1 Qd4+–)) 17.b5 Qe6 18.Qe2 c6 19.Nd2 Nf7 20.bc6 bc6 21.Rh5 (21...Qe3 22.Qe3 Re3 23.Nf3+–) 1–0. marekt – AllKnighter, ChessWorld.net, 2003.

4.g3 c6 5.Bg2 (5.Nf3 Nd7=+) 5...Nf6 6.e3 (6.Nf3 Nbd7=+) 6...Be7 (6...a5 7.Nf3 Nbd7 8.0–0=+) 7.Ne2 (7.f4 ef4 8.gf4 Bg4=+) 7...0–0 (7...a5 8.0–0–/+) 8.0–0 a5 9.c3 (9.f4 A) 9...ab4?? 10.fe5 (10.Be5?! Qe6=) 10...Qe6 11.ef6 Bf6 12.Bf6 gf6 13.Nd4+–; B) 9...e4=+) 9...ab4 (9...Bg4 10.f3 Be6 11.d3–/+) 10.ab4 Ra1 11.Ba1 Bf5 12.d3 (12.f4 e4–/+) 12...Nbd7 13.e4 (13.Bb2!?–/+) 13...de4–+ 14.de4 Be4 (14...Ne4 15.g4 Bg6 16.Qd6 Bd6 17.Rd1–+) 15.Qd6 Bd6 16.Rd1 (16.Be4 Ne4 17.f3 Ng5–+) 16...Bg2 (16...Bd5 17.Nd2–+) 17.Kg2 Bc7 (17...Be7 18.Nd2–/+) 18.Na3 (18.Nd2 Rd8–/+) 18...Ra8–+ 19.Bb2 Nb6 (19...e4 20.c4–/+) 20.c4–/+ Kf8 21.f4 Ng4 22.Rd3 ef4 23.Nf4 Bf4 24.gf4=+ Re8 25.Bd4 Na4 26.h3 Nh6 27.Bf2 f6 28.Rd7 Re7 29.Rd8 Kf7 30.Ra8 Nc3–/+ 31.Bc5 Rd7 32.b5 cb5 33.Nb5 Rd2 34.Kf3 Rd3 35.Kg2 Ne4 36.Rf8 Kg6–+ 37.Ba7 Nf5 38.Re8 Nh4 39.Kh2?? Rd2 (40.Bf2 Rf2 41.Kg1 Nf3 42.Kh1 Rh2#) 0–1. Adamowski,Andrzej – Wisniewski,Jan, corr 2. AMM Poland, 1994.

4.g3 Nd7 5.Nf3 +=.

4.g3 Be7 5.Bg2 (5.f4 Bf6 6.fe5 Be5 7.Be5 Qe5=+) 5...Nf6 6.e3 (6.Nf3 Nbd7=+) 6...0–0 (6...a5 7.f4 e4 8.b5–/+) 7.Ne2 Bg4 (7...a5 8.b5–/+) 8.0–0 c6 (8...Nbd7 9.f3 Bf5 10.g4=+) 9.h3 Bh5 (9...Be6 10.f4 e4 11.f5=+) 10.d3 (10.f4 ef4 11.g4 Bg6 12.ef4 Be4=+) 10...Nbd7 (10...a5 11.f4 e4 12.g4 ed3 13.Qd3 Ng4 14.hg4 Bg4 15.b5+/–) 11.Nd2 (11.g4 Bg6=+) 11...a5 12.ba5 Ra5 13.f4 (13.g4 Bg6=+) 13...Be2 (13...Qc5!? 14.Kf2 ef4 15.gf4 Qa7–/+) 14.Qe2=+ Rfa8 Increasing the pressure on the isolated pawn on a3 (14...b5 15.c4=+) 15.Nf3 (15.c4 b5=) 15...ef4 (15...e4 16.Nd2 Nc5 17.Be5–/+) 16.ef4 Bf8 (16...Re8 17.Ne5=+) 17.Rfb1 (17.Qe3 Qc5 18.Nd4 Qa7=+) 17...Qb8 (17...Qc7 18.Be5 Ne5 19.fe5=+) 18.Ne5 Qc8 (18...Qc7 19.c4=+) 19.Nc6?? (better is 19.Nd7 Nd7 20.Qg4=) 19...bc6–+ (20.c4 dc4 21.dc4 Ba3–+) 0–1. Adamowski,Andrzej – Baluch,Wieslaw, corr 2. AMM Poland, 1993.

4.g3 f5 5.f3 (better is 5.Nf3 e4 6.Nd4=) 5...Nf6–/+ 6.Bg2 Be7 7.d3 (7.Nh3!?–/+) 7...0–0–+ 8.Nd2 Nbd7 9.c4 d4 (better is 9...a5!?–+) 10.Qb3 c5 11.0–0–0 (11.Nh3!?–/+) 11...cb4 12.c5 Qd5 13.Nc4?? (better is 13.ab4 Kh8 14.Nh3–/+) 13...Nc5–+ 14.Qc2 a5 (better is 14...b3 15.Qd2 b5 16.Na5–+) 15.Nb6 (15.e4 Qc6 16.Ne5 Qc7 17.ab4 ab4 (17...Qe5?! 18.bc5 Bc5 19.Ne2–/+) 18.Bd4 Nb3 19.Kb1 Qc2 20.Kc2 Nd4 21.Kb1 b3–+) 15...Qc6 16.Na8 (16.Nc8 Rac8 17.Kb1 Qe6–+) 16...b3 17.Qd2 (17.Qc4 Be6 18.f4 A) 18...Bc4?! 19.Bc6 Bd5 A1) worse is 20.fe5 Bc6 (20...Ra8 21.Bd5 Nd5 22.Nf3+=) 21.ef6 Bf6–+ (21...Bh1?! 22.fe7 Ra8 23.Bd4=; 21...Ra8?! 22.fe7 Bh1 23.Bd4=); A2) 20.Bd5 Nd5 21.fe5=; B) 18...Qg2–+) 17...Nce4 (17...Nce4 18.Kb1 Nd2 19.Rd2 Nd5–+) 0–1. mbarker (2410) – justforfun (2510), net–chess.com, 2015.

4.g3 Bf5=+ 5.Bg2 c6 (5...Nf6 6.Nf3 Nbd7 7.0–0=+) 6.Nf3 Nd7 7.0–0 Ngf6 8.d3 Be7 9.Nbd2 (9.c4 0–0=+) 9...0–0 10.c4 Rac8 (10...Rfe8 11.d4 e4 12.Ne5=+) 11.Qc2 (11.Qa4 a6=) 11...Qb8 (11...Rfe8 12.c5 Qc7 13.e4=+) 12.Rfc1 Rfe8 13.e4 de4 (13...Bg6 14.ed5 cd5 15.Nh4=) 14.de4 Bg4 15.c5 b6 16.Nc4 (16.cb6!? ab6 17.Nc4 Bf3 18.Bf3=+) 16...Bf3=+ (< 16...bc5 17.Nfe5 cb4 18.ab4 Bb4 19.Qa4=) 17.Bf3 bc5 18.Rab1 (18.bc5!? Bc5 19.Rab1=+) 18...cb4–/+ 19.ab4 Bb4 20.Bc3 c5 21.Ne3 a5–+ 22.Nd5 Nd5 23.ed5 Qd6 24.Ba1 Nf6 25.Rd1 Rcd8 26.Bg2 Re7 27.Rb3 Ne8 28.Be4 Nf6?? 29.Bg2 Ne8?? 30.Be4 g6 31.Bg2 Rc8 32.Qc4 f6 33.Re3 Kh8 34.Bh3 Rd8 35.Bb2 Ng7 36.Bg2 Nf5 37.Re4 Nd4 38.Rh4 Rde8 39.Be4 f5 40.Bg2 Kg8 41.Rh6 Rf8 42.Bc1 f4 43.g4 Kg7 44.Rh3 Qd7 45.g5 Qg4 46.f3 Qg5 47.Bb2 Qf6 48.Bf1 Qf5 49.Rh4 Nf3 50.Kh1 Nh4 51.Bd3 Qg4 52.Rg1 Qf3 0–1. Fischer,P – Gruenenwald,Evi (2090), Bad Zurzach op, 1995.

4.g3 f6 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.g3 Qd6).

4.g3 Qf6 5.Nf3 (5.f4 Bd6=) 5...Nc6 (5...Bd6 6.Bg2+=) 6.d3 (6.b5 Nd4=) 6...a6 (6...Bd6 7.c4 dc4 8.dc4=) 7.Qd2 (7.Bg2 Be6+=) 7...h6 (7...Bd6 8.Bg2+=) 8.d4 (8.Ne5!? Ne5 9.Qe3+=) 8...e4+= 9.Ne5 Bd6 (9...Ne5 10.de5 Qc6 11.Bg2+=) 10.f4 (10.Nc6 bc6 11.c4 a5=) 10...Be5 (10...ef3 11.ef3 Nge7 12.f4+=) 11.fe5 (11.de5 Qe6=) 11...Qg6+= 12.Qf4 Qe6 (12...Nge7 13.e3+=) 13.e3 (13.Bg2 b5=) 13...g5 (13...Nge7 14.c4=) 14.Qf2+= Nge7 15.h4 (15.Be2 Rf8+=) 15...gh4 (better is 15...Qf5=) 16.Bh3 (16.Rh4 Qg6 17.c4 dc4 18.Bc4 Be6+=) 16...f5 (16...hg3!? 17.Qg3 Qg6–/+) 17.Nd2 (17.gh4!? Rg8 18.Nd2=) 17...hg3–/+ 18.Qg3 Bd7 19.0–0–0 (19.c4 Qf7+=) 19...Rg8 (19...0–0–0 20.Qf2–/+) 20.Qh4 0–0–0 21.Rdg1 (21.Nb3 Rg5+=) 21...b6 (21...Rg1 22.Rg1 Rg8 23.Rh1–/+) 22.Bf1+= Kb7 (22...Rg1 23.Rg1 Kb7 24.c4+=) 23.c3 (23.Rg8 Rg8 24.Qh6 Ng6+=) 23...a5 (23...Rg1!? 24.Rg1 Rg8 25.Rg8 Ng8–/+) 24.b5 (24.Rg8 Rg8 25.Qh6 Ng6=) 24...Na7 25.a4 (25.c4 Rg1 26.Rg1 Rh8=) 25...c6 (25...Rc8 26.Ba3 Rg1 27.Rg1=) 26.c4 cb5 27.ab5 (27.cb5 Rg4 28.Qf6 Rg1 29.Rg1 Rg8 30.Qe6 Be6 31.Rg8 Ng8+=) 27...Rc8–/+ 28.Rg8 (better is 28.Kb1!?–/+) 28...Ng8–+ (28...Rg8 29.Qh6 Qh6 30.Rh6 dc4 A) worse is 31.Nc4 Rg1 (worse is 31...Nb5 32.Rb6 Kc7 33.Kd2+=; 31...Bb5?! 32.Nd6 Ka6 33.Bh3+=) 32.Ba3 Rf1 33.Kd2 Rf2 34.Kc1 Nd5–+ (34...Bb5?! 35.Rb6 Ka8 36.Bd6=); B) 31.Rh7+/–) 29.Kb1 (better is 29.c5 bc5 30.dc5 Rc5 31.Kd1 Bb5 32.Rg1–+) 29...Qe8?? (better is 29...dc4 30.Ne4 fe4 31.Qe4 Kb8–+) 30.Qf2 (30.cd5 Bb5 (worse is 30...Nb5 31.e6+=) 31.Qf2 Qd7+=) 30...dc4 (30...Qf7!?–/+) 31.Nc4+= Bb5?? (better is 31...Nb5 32.d5 Qd8+=) 32.Nd6+– Ka6 33.Ne8 Re8 34.Qf5 Bd3 (34...Ra8 35.Bb5 Nb5 36.Qe6+–) 35.Bd3 ed3 36.Qd3 Nb5 37.d5 (37.Rh5 Re6 38.Qc4 Re7+–) 37...Rd8 (37...Ne7 38.Rh6 Rg8 39.d6 Rg1 40.Ka2+–) 38.e6 (better is 38.d6 Rd7 39.Ba3+–) 38...Kb7 (38...Ne7 39.Rh5 Nc8+–) 39.Qb5 Ka7 40.Rg1 1–0. willi_weizenkeim – pytolo98, playchess.de, 2003.

4.g3 g6 5.Bg2 Bg7 6.d3 c6 7.Nd2 f5 8.f4 Ne7 9.Ngf3 Nd7 10.0–0 0–0 11.e3 b6 12.c4 Ba6 13.Qb3 Kh8 (13...e4!? 14.Bg7 ef3 15.Bf8 fg2 16.Kg2 Kf8+=) 14.Qc3 d4 15.ed4 ef4 16.gf4 Qf4 17.Rae1 Qd6 18.c5 bc5?? (better is 18...Qf6+=) 19.dc5+– Bc3 20.Bc3 (20.cd6?! Bb2 21.Re7 Nf6+=) 20...Kg8 (20...Qf6 21.Bf6 Nf6 22.Re7 Bd3 23.Rfe1+–) 21.cd6 Nd5 22.Bd4 (22.Ne5 Ne5 23.Be5 Bd3+–) 22...Bd3 23.Rf2 Nf4 (23...a5 24.Ne5 Ne5 25.Re5 ab4 26.Rd5 ba3+–) 24.Re7 Rf7 (24...Nf6 25.Ng5 Ne2 26.Rfe2 Be2 27.Bc6+–) 25.Rf7 Kf7 (25...Nh3 26.Bh3 Kf7 27.Ng5 Kg8 28.Rf3+–) 26.Ng5 Kg8 27.Rf4 h6 (27...Bb5 28.Nh7! Re8 29.Ng5 Re1 30.Nf1+–) 28.Ne6 (28.Ne6 Re8 29.Nc5 Nc5 30.bc5+–) 1–0. Olcum,Ahmet (1870) – Kazdagli,Benan (1620), TUR–ch op Antalya, 2008.

4.h3 a5 5.b5 Nf6 6.e3 Bf5 (6...Be7 7.d4 e4 8.c4=+) 7.Nf3= Nbd7 8.d4 (8.c4 c5=) 8...e4=+ 9.Nh2 (9.Ne5 Be7=+) 9...Be7 10.Be2 (10.c4 0–0=+) 10...0–0 11.0–0 Nb6 (11...Qe6 12.Ng4=+) 12.a4 c6 (12...Qe6 13.Ba3=+) 13.Ba3 Qc7 14.Be7 Qe7 15.Nc3 (15.bc6 bc6 16.Nd2 c5=+) 15...Qb4 (15...Rac8 16.Qd2=+) 16.Qd2 Nc4 17.Bc4 Qc4 18.bc6 bc6 19.Rfb1 Rfb8 20.f3 (20.Nf1 Be6=+) 20...Rb4–/+ 21.Rb4 ab4 22.Ne2 ef3–+ 23.Nf3 Qc2 (24.a5 b3 25.Qc2 Bc2–+ (25...bc2?! 26.Ra2–/+); 23...Bc2?! 24.Ne5 Qb3 25.Nc6=+) 0–1. Unger – Kedzierski, corr 3GMM–16, 1996.

4.d3 Be6

5.Nd2 Nf6 6.Ngf3 Nbd7 7.c4 (7.e3 a5=+) 7...dc4 (7...d4 8.e3 de3 9.fe3=) 8.Nc4= Bc4 9.dc4 c5 (9...e4 10.Nd4=) 10.Qd6 Bd6 11.b5 (11.Rd1 Ke7 12.bc5 Bc5=) 11...e4 (11...Bc7 12.e3=) 12.Nh4 (12.0–0–0 Bc7 13.Nd2 0–0–0=) 12...Be5=+ 13.Be5 Ne5 14.Rc1 (14.Nf5 Nc4 15.e3 g6 16.Ng7 Kf8 17.Ne6 fe6 18.Bc4 Ke7=+) 14...0–0 (14...Rd8 15.Nf5 g6 16.Ne3=+) 15.g3 (15.Nf5 Rfd8=+) 15...Rad8 16.Bg2 Rd4 17.Nf5 Rc4 18.0–0 b6 19.Ne7 Kh8 20.f4 (20.Nc6 Rc1 21.Rc1 Nc6 22.bc6 Rc8–/+) 20...ef3 21.ef3 Re8 22.Nc6 Rc1 23.Rc1 Kg8 24.Na7=+ Nd3 25.Rc3 Re1 26.Bf1 Ne5 27.Kf2 Nd5 28.Rb3? Rc1 29.Rb2–/+ c4?? 30.Nc6?? c3–+ 31.Re2 Nd3 32.Kg2? N5f4! 33.gf4 Nf4 34.Kf2 Ne2 35.Be2 Ra1 36.Nb4 Ra3 37.Nc2 Ra4 38.Bd3 Kf8 39.h3 Ke7 40.Ke3 Rh4 41.Bf1 Kd6 42.Nd4?? Kc5 43.Nc2 Ra4 44.Bd3 Ra8 45.h4 Re8–+ 46.Kf4 Rd8 47.Ke3 Rd6 48.Na1 Rh6 49.Nb3 Kb4 50.Nd4 Rh4 51.Ne2 Kb3 52.Be4 Kb2 53.Kd4 f5 54.Nc3 fe4 55.fe4 Kb3 56.Nd5 Ka4 57.Nc7 Rh1 58.Kd5 Re1 59.e5 h5 60.Ne6 h4 61.Ng5 Re3 62.Kd4 h3 0–1. Sturc,Gustav (2205) – Mosny,Jaroslav, Tatry op Tatranska Lomnica, 1997.

5.Nd2 Nf6 6.g3 c6 7.Bg2 Nbd7 8.e3 g6 9.Ngf3 h6 10.0–0 Bg7 11.c4 b6 12.Qc2 0–0 13.Rac1 Rac8 14.Rfd1 Rfe8 15.Nb3 (15.cd5 Nd5 16.Nc4 Qb8+=) 15...Bg4 16.Rd2 Qe6 17.cd5 cd5 18.Qc8 Rc8 19.Rc8 Kh7 20.Rdc2 Qf5 21.Ne1 (better is 21.Nfd2 Qd3 22.Bf1+=) 21...Bd1–/+ 22.R2c3 Ng4 23.f3 Ne3 24.Nd2 e4?? (better is 24...Nc5! 25.R8c5 bc5 26.Rc5 a6–+) 25.de4= de4 26.Re3 Bb2 27.fe4 Qg5 28.Rd3 Ne5 29.Ndf3 Bf3 30.Nf3 Qg4 31.Ne5 Qc8 32.a4?? (32.Nf7 Ba3! 33.h3–+) 32…Be5 0–1. Zawadzki,Krzysztof (1640) – Trepczyk,Adrian, Ferie z szachami Poland, 2009.

5.Nf3 Nd7 =+.

4.d3 f5

5.Nd2 Nf6 6.c4 c6 7.c5 Qc7 8.e4 fe4 9.de4 de4 10.Ne4? (better is 10.Bc4=) 10...Ne4–/+ 11.Qh5 Qf7 12.Qe5 Qe6 13.Qh5 Qg6 (13...Ke7 14.Ne2 Nf6 15.Qf3–+) 14.Qg6 hg6 15.f3?? (15.Bd3 Bf5–/+) 15...Nf6 (better is 15...Ng3! 16.hg3 Rh1–+) 16.0–0–0–/+ Be6 17.Bd3 Kf7 18.Ne2 Nd5 19.Bd4? (better is 19.Nd4!?+=) 19...Nd7 20.h3 (20.Nc3 Nc3 21.Bc3 b6–/+) 20...Be7 21.Kc2 (21.Nc3 Nf4 22.Bf1 a5–+) 21...Bf6 (21...b6 22.Be4 bc5 23.bc5–+) 22.Bf2 (22.Rhe1 a5 23.Be4 ab4 24.Bd5 cd5 25.ab4 Ra2 26.Kc1 Rha8–+) 22...Ne5 23.Be4 Nc4 0–1. Santana,Expedito (1690) – Broday,Geovani Allan (2135), Curitiba BRA, Open, 2014.

5.Nd2 Nf6 6.c4 c6 7.g3 Be7 8.Bg2 0–0 9.e3 f4 10.e4 Be6 11.gf4+= d4? 12.fe5+– Qe5 13.Ngf3 Qh5 14.Nd4 Bg4 15.Bf3 Bf3 16.Qf3 Ng4 17.Nf5 Bg5 18.Rg1 Rf5 19.ef5 Bf6 20.Bf6 Nf6 21.Qh5 Nh5 22.Ne4 Nd7 23.0–0–0 a5 24.Rg5 Nhf6 25.Rdg1 (25.Rdg1 Ne8 26.Nd6+–) 1–0. Valenta,Vit (2170) – Sulc,Jiri (2010), Marianske Lazne op, 2006.

5.Nd2 Nf6 6.Ngf3 Be7 (6...e4!? 7.Nd4 Nc6=) 7.Be5+= Qd7 8.c4 0–0 9.e4?? (better is 9.cd5 Qd5 10.e4+–) 9...de4–+ (9...de4 10.de4 fe4–+) 0–1. pushtiu (2245) – justforfun (2510), net–chess.com, 2015.

5.e3 Nf6 6.Nf3 Nbd7 7.Nc3 c6 8.g3 Be7 9.Bh3 Ng4 10.Bg4 (better is 10.Bg2!?=) 10...fg4–/+ 11.Nd2 Nf6 12.d4 ed4 13.ed4 0–0 14.Ne2 Bf5 15.Nf4 g5 16.Ng2 Be4 (16...Qe6 17.Ne3 Ne4 18.Qe2–+) 17.Ne4 (better is 17.0–0!? a5 18.Bc3–/+) 17...Ne4–+ (17...de4?! 18.Qd2 Nd7 19.Ne3=) 18.0–0 Qd7 (18...Qe6 19.Rb1–+) 19.Ne3 Rf7?? (better is 19...Rf3 20.Qe2 Raf8–+) 20.Qg4 (20.Ng4!? Rff8 21.f3+/–) 20...Qg4+= 21.Ng4 Nd2 22.Ne5 (22.Nh6 Kg7 23.Nf7 Nf1 24.Ng5 Ng3 25.Ne6 Kf7 26.hg3 Ke6+/–) 22...Nf3 (22...Nf1 23.Nf7 Ng3 (worse is 23...Kf7 24.Rf1 a5 25.c3+=) 24.Nh6 Kg7=) 23.Kg2+/– Ne5 24.de5 c5 25.bc5 Bc5 26.Rad1 Raf8 27.Bd4 (27.f3!? Rd7 28.f4 gf4 29.Rf4 Re8+–) 27...Rc7+/– 28.Bc5 Rc5 29.Rb1 b6 30.Rfc1 Rfc8 31.Rb2 Kf7 32.f4 gf4 33.gf4 Ke6 34.Kf3 Rc3 35.Ke2 Kf5 0–1. smoothoperator (2255) – justforfun (2510), net–chess.com, 2015.

4.d4 f6

(--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.d4 Qd6).

5.e3 Be6 6.Nf3 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 f6 5.e3 Be6 6.d4).

4.e3 e4

5.c4 dc4 6.Qc2 Qc6 7.Qc4 =.

5.c4 c6 6.Nc3 Nf6 7.Qb3 (7.Qc2 Qe6=) 7...Be7 (7...Be6 8.d3=) 8.Rc1 (8.d3 0–0=) 8...dc4=+ 9.Bc4 0–0 10.Qc2 Bf5 (10...Rd8 11.Nge2 b5 12.Bb3=+) 11.Nge2 Rd8 12.Ng3 Bg6 13.Rd1 Nbd7 (better is 13...b5!? 14.Bb3 a5 15.Nge4 Ne4 16.Ne4 A) < 16...ab4 17.Bf7 Kf8 A1) 18.Nd6?? Bc2 19.Rc1 ba3 (19...Rd6?! 20.ab4 Kf7 21.Rc2–+) 20.Bg7 Kg7 21.Rc2 Bd6–+; A2) 18.Bg6 Qg6 19.ab4=; B) 16...Qd3 17.Qd3 Rd3=+) 14.Nce4+= Ne5 (better is 14...Qc7!?+=) 15.Nd6+– Bc2 16.Be5 Bd6 17.Bf6 gf6 18.Rc1 Ba4 (18...Bg6!? 19.h4 h5+/–) 19.Ne4+– Be7 (19...a5 20.Nd6 Rd6 21.d4+–) 20.Nc3 b5 21.Na4 ba4 22.Ba6 Rd6 23.d4 Re8 (23...f5 24.Bb7 Rb8 25.Bc6+–) 24.0–0 (24.Ke2 Bd8+–) 24...f5 (24...Rb8 25.Rc5+–) 25.g3 (25.Bb7 f4 26.Bc6 Rc8+–) 25...Rg6 (25...f4 26.Bc4+–) 26.Bd3 Rf6 27.Rc3 f4 28.gf4 Kh8 29.Rfc1 Rg8 (29...Rh6 30.Bc2 Rg8 31.Kh1+–) 30.Kh1 (30...Kg7 31.Be4+–) 1–0. Buczinski,Henryk – Janik,Robert, Siemianowice Slaskie, 1992.

5.c4 Nf6 6.h3 (6.cd5 Nd5 7.d3 Bf5=) 6...dc4 7.Bc4 Nbd7 8.Ne2 (8.Nc3 Nb6 9.Be2 a5=) 8...Ne5 (8...Be7 9.d3=+) 9.Be5 Qe5 10.Nbc3 c6 (10...Bd6 11.d4 ed3 12.Bd3=+) 11.d4 ed3 12.Qd3 (12.Bd3 Bd6=) 12...Bd6 (12...b5 13.Rd1 Bd7 14.Ba2=+) 13.Ng3 (13.f4!? Qe7 14.Rd1=) 13...0–0=+ 14.0–0 (better is 14.Rd1 Rd8 15.0–0=+) 14...Nh5?? (14...b5 15.Bb3=+) 15.Nce2?? (15.f4 Nf4 16.ef4 Qe7+–) 15...Bh3?? (better is 15...Ng3 16.Ng3 Be6=) 16.gh3+– Ng3 17.Ng3 h5 18.f4 Qe7 19.Nh5 g6 20.Ng3 Rad8 21.Qe2 b5 22.Bb3 Bc7 23.Rfe1 Qh4 24.Kg2 Kg7 25.Qf3 Rh8 26.Rh1 g5?? 27.Nf5 (27...Kg8 28.Nh4 gh4 29.Qc6+–) 1–0. wlittle (2130) – dadio (2000), net–chess.com, 2005.

5.Ne2 Nf6 =.

4.e3 Ne7

5.c4 Bf5 6.c5 Qe6 7.Nf3 Ng6 8.Qe2 (8.Nc3 Be7=) 8...a6 (8...Nd7 9.Nc3 c6 10.h3+=) 9.Nc3 f6 (9...Nc6 10.d3=) 10.Na4 (10.d3 Nc6=) 10...Qc6 (10...Nc6 11.b5 ab5 12.Qb5–/+) 11.Nc3= Be7 12.a4 (12.d4 0–0=) 12...Nd7 13.Qd1 Rd8 (13...0–0 14.Be2+=) 14.Be2 0–0 (14...a5 15.b5 Qe6 16.d4=) 15.Qb3 Be6 16.Qa3 (better is 16.d4!? Bf7 17.h4=) 16...a5–/+ 17.Bb5 ab4 18.Qb4 (18.Bc6!? ba3 19.Bd7 Bd7 20.Ba3+=) 18...Qc5 19.Qc5 Bc5 20.0–0 c6 21.Be2 Rf7 (21...Ra8 22.Rfc1–+) 22.a5–/+ Nb8 (22...Ra8 23.d4 Bb4 24.a6 ba6 25.Ba6–+) 23.a6 (23.d4!? Bd6 24.de5 fe5 25.Ng5–/+) 23...ba6–+ Black launches an attack 24.Ba6 Bb4 25.Be2 c5 26.d4 (26.d3 Rb7–/+) 26...cd4 27.ed4 e4 28.Nd2 Nf4 29.Ndb1 Rc8 30.Bd1 (30.Bc1 Ng2! (30...Rc3?! 31.Nc3 Bc3 32.Bf4 Ba1 33.Ra1–/+; 30...Ne2?! 31.Ne2 Nc6 32.Be3–+) 31.Bd2 Bc3 32.Nc3 Nh4–+) 30...Nd3 31.Na4 (31.Ra2 Rfc7 32.Ne2 Nc6–+) 31...Rb7 (31...Nb2 32.Nb2 Nc6 33.Bb3–+) 32.Be2 (32.Bc3–+) 32...Nb2 33.Ba6 (33.Nb2 Rc2 34.Nd3 ed3 35.Bd3–+) 33...Na6 34.Nb2 Nb8 35.Nd1 (35.Ra8 Kf7–+) 35...Bd6 (better is 35...Nc6!? 36.Ne3 Nd4 37.Rd1–+) 36.Ne3 Bf4 (36...f5 37.Ra2–+) 37.Ra8 (37.Na3 Nc6 38.Nac2 Rb2–+) 37...Rb4 38.Nc2 (38.g3 Be3 39.fe3–+) 38...Rc2 (38...Rc2 39.Na3 Ra2–+) 0–1. Onoprienko,A – Nemcova,Katerina, Czech–ch U14, 2000.

5.Nf3 Nd7 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ne7).

5.Nf3 Ng6 6.c4 c6 (6...a5 7.b5=) 7.Nc3 a6 (7...a5 8.cd5 cd5 9.Rc1+=) 8.Rc1+= Nd7 9.Qb3 (9.cd5 cd5 10.Qb3 Nb6+=) 9...Nf6 10.Na4 (10.cd5 cd5 11.Bb5 Bd7 12.Bd7 Qd7+=) 10...Be6 (10...Bg4 11.cd5 Bf3 12.gf3 Qd5 13.Qd5 Nd5 14.h4=) 11.Nc5+= b5 (11...dc4 12.Bc4 Bc4 13.Qc4+=) 12.cb5 cb5 13.Ne6 fe6 (13...Qe6 14.Qc2 Bd6 15.Qc6 Ke7 16.Ng5=) 14.Qc3 (14.d4 ed4 15.ed4 Nd7+=) 14...Nd7 (14...e4 15.Nd4 Qd7 16.d3+=) 15.Qc6+/– Qc6 16.Rc6 Nb8? (better is 16...Be7+/–) 17.Re6+– Kd7 18.Rg6! hg6 19.Ne5 (19.Be5?! Nc6+/–) 19...Ke8 (19...Ke6 20.Ng6 Rh6 21.Bd3+–) 20.Ng6 Rh6 21.Nf8 (21.Nf4!? Rd6+–) 21...Kf8 22.g3 Nc6 23.Bg2 Rd8 (23...Ne7 24.Ke2+–) 24.0–0 a5 (24...Ne7 25.Rc1+–) 25.ba5 Na5 26.Bc3 (26.Rb1 Nc6+–) 26...Nc4 (26...Nc6+–) 27.d3 Nb6 (27...d4 28.Bb4 (28.dc4?! dc3 29.cb5 Rh5+–) 28...Nd6 29.Bc6+–) 28.Rb1 Rc6 (28...Rc8 29.Bd4 Na4 30.Rb5+–) 29.Ba5 (29.Rb5?! Rc3 30.Rb6 Rd3+/–) 29...Rb8 (29...Rd7 30.h4 Na4 31.Rb5+–) 30.h4 (30.Rb5 Rc1 31.Bf1 Nd7 32.Bb4 Kf7 33.Rd5 Nf6+–) 30...Ke8 (30...Nd7 31.Bd5 Rc2 32.e4+–) 31.Rb5 Rc1 32.Kh2 Nd7 33.Rb8 Nb8 34.d4 (34.Bb4 d4+–) 34...Nc6 35.Bb6 Ne7 36.g4 Kf7 (36...Kd7 37.Bc5+–) 37.Bc5 Rc3 (37...Ra1 38.h5+–) 38.a4 (38.h5!? Rc2 39.Kg3 Ra2+–) 38...Rc2 39.Kg3 Ra2 40.Be7 Ke7 41.Bd5 Ra4 42.f4 (42.h5 Ra5 43.Be4 Rb5+–) 42...Kd6 (42...Ra3 43.Kf3+–) 43.Be4 (43.Bf3 Kd7+–) 43...Ra1 (43...Ra3 44.Kf3+–) 44.h5 Rg1 (44...Ra3 45.Kf3 Ra2 46.g5+–) 45.Bg2 Re1 46.Kf2 (46.e4 Ke7+–) 46...Rd1 (46...Rb1 47.g5 Rb8 48.e4+–) 47.g5 Rd2 48.Kf3 (48.Kf1 Rd1 49.Ke2 Rb1+–) 48...Ke6 (48...Ra2 49.h6 gh6 50.gh6+–) 49.Bh3 (better is 49.h6 gh6 50.gh6 Kf6+–) 49...Kf7 50.Bf5 Rh2 51.Bg6 Ke7 52.Ke4 (better is 52.f5 Rh1+–) 52...Rh3 (52...Rg2 53.d5 Kd6 54.Kf5+–) 53.d5 (53.f5 Kd6 54.f6 gf6 55.gf6 Rh2+–) 53...Rg3 (53...Kd6 54.Kf5 Re3 55.Bf7+–) 54.Bf5 Rg2 (54...Rg1 55.h6 gh6 56.gh6+–) 55.Ke5 (55.h6 gh6 56.gh6 Rh2+–) 55...Rh2 56.d6 Kf8 (56...Kd8 57.Ke6 Rh5 58.Kf7+–) 57.Bg6 Rh3 58.e4 1–0. Wilk,Adam – Waniek,Tomasz (2060), Poland–chT region, 1999.

4.e3 g6

5.c4 c6 6.d4 Bg7 (6...e4 7.Nc3+=) 7.de5 (7.cd5 Qd5 8.Nc3 Qd7+/–) 7...Be5 8.Be5 Qe5 9.Nd2 Nf6 (9...Be6 10.Ngf3 Qc3 11.Qc1 Qc1 12.Rc1+=) 10.Ngf3 Qe7 11.h3 (11.Bd3 dc4 12.Nc4 Bg4+=) 11...0–0= 12.Be2 a5 13.c5 Na6 (13...Ne4 14.Ne4 de4 15.Nd2=) 14.Rb1 (14.0–0 Be6+=) 14...Bf5= 15.Rb2 (15.Rb3 ab4 16.ab4 b6=) 15...Rfb8 (15...ab4 16.ab4 Ne4 17.Nd4=) 16.Nd4 (16.0–0 ab4 17.ab4 Ne4 18.Ne4 Be4+=) 16...Bd7 17.0–0 ab4 18.ab4 b6 19.Ba6 Ra6 20.N2b3 Ne4 (20...b5 21.Na5=) 21.f3 (21.b5 Nc3 22.Qc2 Nb5 23.Nb5 cb5+=) 21...bc5 (21...Nf6 22.Re1=) 22.fe4+= cd4 23.Nc5 Qc5 24.bc5 Rb2 25.Rf7 (better is 25.Qf3 Be6 26.ed5 Bd5 27.e4=) 25...Be6? (better is 25...Raa2 26.Rd7 Rg2 27.Kf1 Raf2 28.Ke1 de3–+) 26.Rf6 (26.Re7 Raa2 A) 27.Re6 Rg2 28.Kh1 Rh2 29.Kg1 Rag2 30.Kf1 de3 31.ed5 Rg3 32.Re3 Rh1 (32...Re3?! 33.Qg4 Rhh3 34.Qc8 Kg7 35.Qc6=) 33.Kf2 Rd1 34.Kg3 Rd5–/+; B) 27.Qf3 Rg2 28.Qg2 Rg2 29.Kg2+/–) 26...de3? (better is 26...Raa2 27.Qf3 Rg2 28.Qg2 Rg2 29.Kg2 d3+/–) 27.Re6 e2 28.Qe1 d4 29.Rd6 Ra8 30.Rd4 Rf8 31.Rd6 (better is 31.Kh2 Rf1 32.Rd8 Kf7 33.Qh4+–) 31...Rf1 32.Qf1! ef1Q (32...ef1Q 33.Kf1 Combination; 32...ef1R 33.Kf1 Combination; 32...ef1B 33.Rd8 Double attack (33.Rd8 Decoy); 32...ef1N 33.Rd8 Double attack (33.Rd8 Decoy)) 33.Kf1 Kf7 34.Rc6 Rb4 35.Rc7 Kf6 36.Rh7 Re4 37.c6 Rc4 38.c7 Rc2 (38...Ke5 39.h4+–) 39.Kg1 (39.Ke1 Ke5+–) 39...Ke6 40.Kh2 Rc3 41.h4 Kf5 42.Kg1 Rc2 43.Kf1 Kg4 44.Ke1 Kg3 45.Kd1 Rc6 46.Ke2 Kf4 (46...Kg2 47.Re7+–) 47.Kd3 Ke5 (47...Kf5 48.Kd4 Rc1 49.h5+–) 48.g4 White prepares the advance h5 (48.h5 g5+–) 48...Rc1 49.h5 Kf6 50.Ke4 g5 51.Kd5 (better is 51.Kd4 Rc2+–) 51...Rc7 52.Rh6 (52.Rc7?!) 52...Kf7 53.Rg6 (better is 53.Kd4!? Rc2 54.Rg6 Rd2 55.Ke5 Rd1+–) 53...Ra7 54.Rc6 Kg7 55.Ke6 (55.Ke5 Ra5 56.Kd4 Ra4 57.Rc4 Ra1+–) 55...Ra5 (55...Ra4 56.Kf5 Ra5 57.Ke4 Ra4 58.Kf3 Ra3 59.Ke2 Ra2 60.Ke3 Ra3 61.Kd4 Ra4 62.Rc4+–) 56.Rc7 (56.Rd6 Ra4 57.Kf5 Ra5 58.Ke4 Ra4 59.Rd4 Ra7+–) 56...Kh6 57.Rd7?? (better is 57.Rc4+–) 57...Re5 (57...Ra4 58.Rd8=) 58.Kf6 (58.Kf7 Re4 59.Rd6 Kh7+=) 58...Re6 59.Kf7 Rf6 60.Ke7 Re6 61.Kd8 Re8 62.Kc7 Re4 63.Rd6 Kh7 64.Rg6 Rg4 65.Kd6 ½–½. Krc,Milan (1880) – Meszaros,Ludek (2200), Brno Trade op–A, 2005.

5.Nf3 Bg7 6.c4 c6 7.cd5 cd5 8.Nc3 Nc6 9.Rc1 Nge7 (9...Bg4 10.Be2+=) 10.b5 (10.Be2 0–0=) 10...Nd8= 11.b6 (11.d4 e4 12.Nd2 0–0=) 11...Qb6 (11...a6=) 12.Bb5 (better is 12.Nb5!? 0–0 13.Be5 Be5 14.Ne5=) 12...Ndc6 13.Qb3 0–0 14.Na4 Qa5 (14...Qc7 15.d4 e4 16.Ne5+=) 15.0–0 (15.Nc5 e4 16.Bg7 Kg7 17.Bc6 Nc6 (17...ef3?! 18.Bd5 Nd5 19.Qd5 fg2 20.Rg1=) 18.Qb2 Kg8–/+) 15...Bg4 16.Bc3 (16.Bc6 bc6 17.Be5 Bf3 18.Bg7 Kg7 19.gf3 Qd2–/+) 16...Qd8 (16...Qc7 17.Be2–/+) 17.Nc5 (17.Bc6 Nc6 (17...bc6?! 18.Ne5 Rb8 19.Qa2=) 18.Qb7 Rc8–/+) 17...Bf3 18.gf3 a6 (18...b6 19.Nd3–/+) 19.Be2 (19.Nb7 Qb6 20.Ba4 Qb3 21.Bb3 Rab8–/+) 19...b5 20.Bb4 (20.a4 Qd6 21.ab5 ab5–/+ (worse is 21...Qc5 22.bc6 Rfb8 23.Qa2–/+)) 20...a5 (20...Re8!?–+) 21.Nb7–/+ Qb6 22.Be7 Ne7 23.Nc5 b4 (23...Rfc8!? 24.Nd7 Qe6 25.Bb5 Qf5–/+) 24.Nd7= Qe6 (better is 24...Qd6!? 25.Nf8 Bf8=) 25.Nf8+= Bf8 26.ab4 ab4 (26...a4 27.Qa2+=) 27.Qb4 Nf5 28.Qb7 Ra2 (28...Nh4 29.f4 (29.Qa8?? Qh3 30.Qf8 Kf8 31.Rc8 Kg7 32.Rg8 Kg8 33.Rc1 Qg2) 29...Qh3 30.Qd5–+) 29.Rfd1+/– Nh4 30.Qc8 Qf6 31.Rc6 Nf3? (31...Qe7!?+/–) 32.Kf1 (32.Kh1 Qh4 33.Bf3 Qf2+–) 32...Nh2 33.Kg2 Qh4 34.Qh3 Qg5 (34...Qh3!? 35.Kh3 Bb4+–) 35.Qg3 (35.Qg3 Qg3 36.Kg3+/–) 1–0. Wall,Bill – Yaaahooo, playchess.com, 2012.

4.Nf3 Nc6

5.b5+= Na5 6.Be5+/– Qd7 7.e3 f6 8.Bc3 Bd6?? (better is 8...Nc4+/–) 9.Ba5+– b6 10.Bb4 Bb4 11.ab4 Bb7 12.Nc3 Ne7 13.Be2 0–0–0 (13...Qd6 14.Ra4+–) 14.Ra7 c6 (14...Kb8 15.Ra4+–) 15.0–0 Kc7 16.bc6 Nc6 17.Ra4 d4 (17...Ra8 18.Qb1+–) 18.Nd4 Nd4 19.ed4 Qe6 (19...Ra8 20.Ra8 Ra8 21.Bf3+–) 20.Bf3 Kb8 (20...Ra8+–) 21.Bb7 Kb7 22.Qf3 Qc6 23.Ra7! (23...Ka7 24.Qc6 Rd5 25.Qc7 Ka8 26.Nd5 Re8 27.Nb6#) 1–0. Vettenburg – Riesselmann, corr ICCF, 1989.

5.b5+= Nd4 6.Nd4 ed4 7.Bd4 +=.

5.b5+= e4 6.bc6 ef3 7.cb7 Bb7 8.ef3 Nf6 9.Nc3 a6 10.d4 (10.Bd3 Be7+=) 10...Be7 11.Bd3 0–0 12.0–0 Rfe8 13.Re1 c5 (13...Bc8 14.Rb1+=) 14.dc5+/– Qc5 15.Ne2 Ne4 16.Bd4 Qc6 17.c4 Ng5 18.c5 (18.cd5!? Qd5 19.Nf4+/–) 18...Bc5 19.Rc1 Ne6 20.Bh7! =. Sternik,Ryszard – Sobczyk, corr Poland, 1994.

5.b5+= e4 6.bc6 ef3 7.ef3 Qc6= 8.Nc3 Nf6?? (better is 8...Bd7=) 9.Bb5+– 1–0. Hasler,Ulrich – Ramini,Edgardo Atilio, CiF, 2002.

4.Nf3 Nf6

5.e3 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.e3 Nf6 5.Nf3).

5.Be5 Qb6 6.Nc3 Nbd7 7.Bd4 c5 8.bc5 Qa5 (8...Bc5 9.Na4 Qd6 10.Nc5 Nc5 11.e3+/–) 9.e3 Bc5 10.Bc5 Qc5 11.Bd3 0–0 12.0–0 Re8 13.Nd4 (13.Qb1 Ne4+/–) 13...b6 (13...Ne5 14.Re1+/–) 14.Nb3 (14.Bb5 a6 15.Bc6 Ra7+/–) 14...Qe7 (14...Qd6 15.Nb5 Qb8 16.N3d4+/–) 15.Nb5 (15.Bb5 Bb7+/–) 15...Ne5 16.Be2 (16.N3d4 Bd7+=) 16...a6 17.N5d4 Ne4 (17...b5 18.c3+=) 18.f4 (18.a4 Qf6+=) 18...Nc4 19.Bf3 Bb7 (19...Bd7 20.Qe1 Ncd6 21.Qe2+=) 20.Qe1 (better is 20.Be4 de4 21.a4+=) 20...Ncd2?? (better is 20...Na3 21.d3 Nf6+=) 21.Nd2+– Nd6 22.Rf2 Qe3 23.Qe3 Re3 24.Re2 Re2 25.Be2 Re8 26.g3 h6 27.Kf2 Ne4 28.Ne4 de4 29.Ke3 Rd8 30.Rb1 Rd6 31.Nf5 Rf6 32.g4 h5 33.h3 g6 34.Ng3 hg4 35.hg4 Rc6 36.c4 Kg7 37.Ne4 Re6+/– 38.Bd3 Be4 39.Be4 f5 40.gf5 gf5 41.Kf3 fe4 42.Ke3 Kf6 43.Rh1 Kg6 44.Rh3 Rc6= 45.Kd4 Kf5 46.Rh5 Kf4 47.Rh4 Kf3 48.Rh3 Kg4 ½–½. 1805DYDIDIDY – wildemaus@, mySchach.de, 2005.

4.g3 Be6

5.Nf3 Nd7 6.Bg2 Be7 7.0–0 Nh6 8.d4 (8.Bc1 Nf5+=) 8...e4 9.Nfd2 f5 10.Nc3 (10.Nb3 0–0–0+=) 10...0–0–0 (10...a5 11.b5+=) 11.e3 (11.Nb3 f4+=) 11...Ng4 (11...Nf7 12.f3+=) 12.h3 (12.Qe2 Rhe8+=) 12...Ngf6 13.Nb5 Qb6 (13...Qa6 14.Qe2–/+) 14.Nc3 (14.Qe2 Kb8+=) 14...h5–/+ 15.h4 g5 16.hg5 Ng4 17.Na4 Qd6 18.Nc5 h4 (worse is 18...Nc5 19.dc5 (worse is 19.bc5 Qc6–/+) 19...Qd7 20.Bh8 Rh8 21.Nb3 Bg5 22.c6 Qc6 23.Qd4=; 18...Bg5?! 19.Ne6 Qe6 20.Qe2–+) 19.Ne6 (19.Qe2 Bg5 (19...Nc5?! 20.dc5 Qd7 21.Bh8 Rh8 22.f3 ef3 23.Nf3=; 19...hg3?! 20.f3 ef3 21.Nf3–+) 20.Qb5 Nb6–+) 19...Qe6 20.gh4 (20.Ne4 h3 (20...fe4?! 21.Bh3–/+) 21.Bf3 de4–/+ (21...fe4?! 22.Bg4 Qg6 23.Kh2=)) 20...Qd6 The mate threat is Qh2 (20...Qd6 21.Re1 Bg5–+) 0–1. Wartig,Wolfgang – Fiensch,Guenter, corr, 2003.

5.Bg2 c6 6.d3 (6.Nf3 Nd7=) 6...Nd7 (6...Nf6 7.d4 Nbd7 8.de5 Ne5 9.Nf3 Nf3 10.Bf3=+) 7.Nd2 (7.Nf3 Ngf6=+) 7...Nh6 (7...Ngf6 8.c4–/+) 8.Ngf3=+ Be7 9.0–0 0–0 10.e4 (10.c4 Nf5=+) 10...f5 (10...d4 11.Nc4 Qc7 12.c3=+) 11.ef5 (11.ed5 Bd5 (< 11...Qd5 12.Ne5 Qd6 13.Ndc4+/–) 12.Nc4 Bc4 13.dc4 e4 14.Qd6 Bd6=) 11...Bf5 (11...Nf5 12.Re1 Bf6 13.Qe2=) 12.h3 (12.Qe2 Bf6=+) 12...Rae8 (12...a5 13.Re1=+) 13.Re1 Bd8 (13...Bf6 14.Rb1–/+) 14.Nf1 (14.Qe2 Bf6=+) 14...Bb6 15.c4 (15.Ne3=+) 15...Qe6 (15...Qf6 16.Ne3–/+) 16.c5 (16.Be5!? Ne5 17.Re5=) 16...Bc7=+ 17.Nd4 Qg6 (17...Qf6 18.Nf5 Nf5 19.Qg4=+) 18.Nf5 Qf5 (18...Nf5 19.Qa4 b5 20.Qa7+=) 19.Re2 Nf7 20.Ne3 Qg6 21.Qb3 Ng5 22.Nf1 Qh5–+ 23.Rae1 Nh3 24.Bh3 Qh3 25.Bc3 Re6 26.f4 Rf4! 27.gf4 Rg6 (28.Ng3 Rg3 29.Rg2 Qg2#) 0–1. Richter,Steffen – Broberg,Horst (2215), Leipzig VfB op 4th, 1997.

5.Bg2 Nf6 6.Nf3 Nbd7 7.0–0 =+.

4.c4 dc4=+

5.Qc2 Be6 6.Nc3 Nd7 (0–1). Lowry,Paul – Flazinski,Pawel, corr or01–018, 2002.

5.Nc3 Bd7 6.Nf3=+ Nf6 7.g3 Be7 8.Bg2 (8.Bg2 a5 9.Na2–/+; 8.e4 Be6–/+). juramae (1615) – AdamofOcala, internet, 2007.

5.e3 Be6!? –/+.

5.e4 b5 6.Nc3 (6.d3 Nf6=+) 6...c6–/+ 7.Nf3 (7.d3 cd3 8.Nf3 a5 9.ba5 Nd7 10.Qd3 Ra5–/+) 7...f6 (7...a5 8.d3 cd3 9.ba5 Ra5 10.Bd3–/+) 8.h3 (8.d3 cd3 9.Bd3 a5 10.ba5 Ra5=+) 8...Ne7 (8...a5 9.ba5 Ra5 10.d3–/+) 9.Qc2 (9.d3 cd3 10.Qd3 Qd3 11.Bd3 a5–/+) 9...Ng6 (9...a5 10.ba5 Ra5 11.d3 cd3 12.Bd3=+) 10.Rd1 (10.d3 cd3 11.Bd3 a5 12.ba5 Nf4=+) 10...Nf4–/+ 11.d3 cd3 12.Qd2 Be7 (12...a5 13.ba5 Qc7 14.g3–/+) 13.g3 Ne6 14.Bd3 0–0 15.0–0 (15.Qc2 Qc7–/+) 15...Rd8 (15...a5 16.ba5 Qc7 17.a4–+) 16.Ne2 (16.Qc2 Nd4 17.Nd4 ed4 18.e5 fe5 19.Bh7 Kh8 20.Be4 Bh3 21.Rfe1–+) 16...Nd7 (16...a5 17.Qc2 ab4 18.Bb5–+) 17.Nh4 (17.Qc2 Qc7=+) 17...Ndf8 (17...Ng5!?–/+) 18.Nf5=+ Qc7 19.Qc3 a6 (19...Ng6 20.Ne7 Ne7 21.Bc1–/+) 20.Bc2 (20.Qc6 Ra7 (20...Qc6?? 21.Ne7 Kf7 22.Nc6+–) 21.Qc7 Rc7+=) 20...Bb7 21.Bb3 Kh8 22.Ne7 Qe7=+ 23.f4 ef4 24.gf4 c5–/+ 25.e5 fe5 26.Qe5 c4 27.Bc2 Rd1 28.Rd1 Rd8 29.Rd8–/+ Qd8 30.f5 Qg5 31.Ng3? Nf4–+ 32.Kh2 Nh5 33.Bc3 Qg3 34.Qg3 Ng3 35.Kg3 Nd7 36.Kf4 Kg8 37.a4 Kf7 38.h4 ba4–+ 39.Ba4?? Nb6 40.Be8 Ke8 41.Bg7 c3! 42.Kg5 c2 43.Bb2 Kf7 44.Kh6 Kg8 45.Kg5 Nd5 46.f6 Nb4 47.Kf5 Nd3 48.Ba3 Kf7 0–1. Eckhoff,Karlheinz (1710) – Bruns,Michael (2115), Raika op 5th, 1996.

5.e4 Be6 6.Qc2 =+.

5.e3 b5

6.d3=+ cd3 7.Bd3 (7.Qd3 c6 8.Qe4 Nf6 9.Qe5 Qe5 10.Be5 a5 11.Bf6 gf6 12.ba5 Bf5=+) 7...a6 8.Be4 (8.Nf3 Nc6=+) 8...Ra7–/+ 9.Qh5? (better is 9.Bd3–/+) 9...Nf6–+ 10.Qh4 g5! (10...Ne4?! 11.Qe4 f6 12.Nf3–/+) 11.Qg5 Ne4 12.Qh4 (12.Qe5 Qe5 13.Be5 Rg8–+) 12...Bf5 13.Nf3 Be7 (better is 13...Nc6!? 14.Nc3 Nc3 15.Bc3–+) 14.Qh5 Bg6 15.Qe5 Qe5 16.Be5 Bf6 (16...f6!? 17.Bd4 c5 18.bc5 Nc5 19.Nc3–+) 17.Bf6 Nf6 18.Nbd2 a5 19.ba5 Ra5 20.Nb3 Ra7 21.Nfd4 Bd3 (21...c6 22.Ke2–+) 22.f3 0–0 23.Kd2 Bc4 24.e4 Bb3 25.Nb3 Nbd7 26.Rhc1 Rfa8 27.Nd4 Ra3 28.Ra3 Ra3 29.Rc7 Ra2 30.Ke3? Rg2–+ 31.Rc8 Kg7?? 32.Nf5+– (32...Kg6 33.Nh4 Kg5 34.Ng2+–) 1–0. Csiszar,Csaba (2340) – Szabolcsi,Janos (2445), Szivarvany rapid, 1994.

6.d3=+ Be6 7.dc4 Bc4 8.Bc4 bc4 9.Qf3 +=.

6.Nf3 e4+= 7.Nd4 Bd7 (better is 7...c6!?–/+) 8.Nc3+= Qe5 9.f4 ef3 10.Qf3 c6 11.a4 Bb4 12.ab5 Ne7 (12...Qc5 13.Ne4 Qd5 14.bc6 Nc6 15.Nc6 Bc6 16.Bg7+/–) 13.Bc4+/– 0–0 14.b6! a5 (14...ab6 15.Ra8 Pinning (15.Ra8 Deflection)) 15.0–0 Kh8 (better is 15...Bd6!? 16.g3 Kh8+–) 16.Ne4+– (16.Bf7 Bd6 17.g3 Be8 18.Be8 Rf3 19.Nf3 Qf6+–) 16...Nd5 17.b7 Ra6 18.Nc6! Qb2 (18...Rc6 19.Bd5 Double attack (19.Be5 Discovered attack; 19.Bd5 Decoy); 18...Nc6 19.Be5 Discovered attack; 18...Bc6 19.Be5 Discovered attack) 19.Nb8 Rb8 20.Ba6 (20.Bd5?! Qe5 21.Qf7 Be6 22.Be6 Re6+–) 20...f6 21.Qg3 (21.Qg3 Qe5 22.Qe5 fe5 23.Rac1+–) 1–0. Fournier,Frederic (2400) – Torkil (2485), chess.com (team), 2009.

4.d3 Nf6=+

5.Nd2 c6 6.Ngf3 Nbd7 7.e4 a5 8.Be2 (8.ed5 cd5 9.Qe2 Qe6=) 8...Qc7 9.c3 Bd6 10.0–0 0–0 11.Qc2 Re8 12.Nb3 b6 13.Rfe1 Bb7 (13...ab4 14.ab4 Bb7 15.Nbd2+=) 14.Bf1 (14.ba5 ba5 15.c4 a4+=) 14...Nf8 (14...ab4 15.ab4 Ra1 16.Ra1+=) 15.g3 (15.ba5 ba5 16.c4 a4+=) 15...h6 (15...a4 16.Nbd2+=) 16.Bg2 Ne6 17.Rad1 (17.ba5 ba5 18.Nbd2 Nc5=) 17...Rad8 (17...ab4 18.cb4 d4 19.Rc1+=) 18.Nbd2 (18.d4 Ne4 19.de5 Be7= (19...Be5? 20.Ne5 Qe5 21.f3+–)) 18...Ba6 (18...ab4 19.cb4 d4 20.Rc1+=) 19.Bf1 (19.d4 Ne4 20.Ne4 de4 21.Qe4 ed4 22.Nd4 c5+=) 19...Bb7 (19...ab4 20.ab4 Ra8 21.Ra1+=) 20.Nh4 (20.ba5 ba5 21.d4 Nd7=) 20...Ng5 (20...ab4 21.cb4 c5 22.b5–/+) 21.Nhf3 (21.Nf5 Ra8+=) 21...Ne6 (21...Nf3 22.Nf3 Ra8 23.ed5 cd5 24.b5+=) 22.Bg2 Ba6 (22...ab4 23.cb4 d4 24.Rc1+=) 23.ed5 (23.d4 Ne4 24.Ne4 de4 25.Qe4 ed4 26.Nd4 c5+=) 23...cd5+= (worse is 23...Nd5 24.ba5 ba5 25.Ne4+/–) 24.c4 e5 draws heavy fire 24...ab4 (24...d4 25.Re2+=) 25.ab4= Bb4 (better is 25...d4!?=) 26.Be5+= (26.Ne5?! b5=; 26.Re5?! b5=) 26...Qe7 27.Bf6 (27.Qb2 dc4 28.Bf6 gf6 29.dc4 Bb7+=) 27...gf6 (27...Qf6 28.Qa4 Bd2 29.Nd2+=) 28.Qb2 dc4 29.dc4 Bb7 30.Re2 Bf3 (30...Bc5 31.Rde1+=) 31.Bf3+/– Kg7 32.Bd5 Bd2 (32...Bc5 33.Nf3+/–) 33.Rdd2 Qc5 34.Qc3 (34.Re4 Ng5 35.Rg4 Qc8+/–) 34...Nc7 35.Re8 Re8 36.Qf3 Nd5 37.cd5 (worse is 37.Rd5 Re1 38.Kg2 Qc4+=) 37...Qd6 38.Qg4 Kf8 39.Qh5 (39.Rd1+/–) 39...Re5 The isolani on d5 becomes a target (better is 39...Kg7!?+=) 40.Qh6+– Ke7 41.Rd1 Rd5 (41...b5 42.Qd2+–) 42.Qe3 Kf8 43.Rd5 Qd5 44.Qb6 Qd1 45.Kg2 Qd5 46.f3 Qd2 47.Qf2 Qd5 48.Qb2 Kg7 (48...f5 49.h4+–) 49.h4 Qf5 (49...Qe6 50.h5+–) 50.Qd2 (50.g4 Qf4+–) 50...Qe5 51.Qd3 (51.Qf4 Qe2 52.Kh3 Qb5+–) 51...f5 52.Qd2 Kh7 53.Kh3 Qa1 54.Kg2 Qe5 55.Qc2 Kg8 56.Kh3 Qd5 57.Qe2 Qd4 (57...Kh7 58.Qe3+–) 58.Qe7 Qd3 59.Kg2 Qd2 60.Kf1 Qd1 61.Kf2 Qd4 62.Qe3 Qb2 63.Qe2 Qd4 64.Kg2 Qd5 65.Qe3 Qa2 66.Kh3 Qb1 67.Kg2 Qa2 68.Qf2 Qd5 69.Qc2 Qe5 70.Qd2?? (70.h5 Kh7+–) 70...Kh7 71.Qc2?? (71.h5 Qe6 72.Qf4 Qa2 73.Kf1 Qb1 74.Ke2 Qc2 75.Ke1 Qd3+–) 71...Kg8 72.Qf2 Qd5 73.Qe2 Qd4 74.Qe8 Kg7 75.Qb5 Qd2 76.Kh3 Qc2 (76...Kf6 77.Qa6 Kg7 78.Qa1 Kh7 79.Qe5+–) 77.Qe5 Kg8 (77...Kf8 78.h5+–) 78.h5 Qc1 (78...Kf8 79.Qd6 Ke8 80.Kh4+–) 79.Kh4 Qh1 80.Kg5 Qh3 (80...Qc1 81.f4 Qc6+–) 81.Kf6 Qh5 82.Qe8 (82.Qf5?! Qh6 83.Ke5 Qe3 84.Kd5 Qd2 85.Ke4 Qb4 86.Ke3 Qc3 87.Qd3 Qe5 88.Kf2 Kg7+/–) 82...Kh7 83.Qf7 Qf7 84.Kf7 Kh6 85.Kf6 f4 86.gf4 Kh7 87.Ke7 Kg8 88.f5 Kg7 89.f6 Kg6 90.f7 Kf5 91.f8Q 1–0. Boor,Carl Brandon (2305) – Feng,Maggie (2175), Dayton Masters, 2016.

5.Nd2 Be6 6.Ngf3 Nbd7 7.e3 +=.

5.Nd2 g6 6.Ngf3 (6.e4 Nc6=) 6...Nbd7 7.e4 Bg7 8.Be2 0–0 9.0–0 b6 (9...Re8 10.c4 d4 11.c5=) 10.c4 (10.ed5 Nd5 11.Re1 Rd8+=) 10...de4 (10...d4 11.Bc1=) 11.de4+= Bb7 (11...Rd8 12.Qb3+=) 12.Qc2 c5 13.Rfd1 Qc7 14.Bd3 (14.Qd3 Nh5+=) 14...Rfe8 (14...Rfd8 15.Qc3=) 15.Nb1 Nh5 (15...Qd6 16.Nc3+=) 16.Nc3+/– Rad8 (16...Nhf6 17.Nd5 Qd6 18.Bc3+=) 17.Nd5 Qb8 (17...Qd6 18.Be2+/–) 18.b5 (18.Rab1 Nf4+=) 18...Nf8 (18...Nf4 19.Qc3 Ne6 20.a4+=) 19.a4 Ne6 20.a5 (20.Bc1 Nef4+=) 20...Bd5 (20...Nd4 21.Nd4 ed4 22.Bc1+=) 21.ed5 (21.cd5 Nd4 22.Nd4 ed4+=) 21...Nd4+= 22.Nd4 ed4 23.Re1 (23.g3 Qd6+=) 23...Nf4= 24.ab6 ab6 25.g3 (25.h3 Re5=) 25...Nd3 26.Qd3 Re1 27.Re1 Re8 28.Re8 (28.Rd1 Be5=) 28...Qe8+= 29.Kf1 f5 (29...Bh6 30.Qe2 Qd8 31.Kg2=) 30.Bc1+= Be5 31.Qa3 (31.Qe2 Kf7=) 31...Qb8 (31...Qd8 32.Kg2=) 32.Bh6 (32.Kg2 Qd8=) 32...Kf7 (32...Qd8 33.Qd3 Qe7 34.Qe2+=) 33.Qf3 (33.Qd3 Qd6=) 33...Bd6 (33...Qd6 34.h3=) 34.g4 Qc8 35.h3 Qd7 36.Bf4 fg4 37.hg4 Bf4 (37...Kg7 38.Bd6 Qd6 39.g5=) 38.Qf4 Ke7 39.Qe5 (39.g5 Qf5 40.Qc7 Ke8 41.Qc6 Kf7 42.Qb7 Kf8 43.Qa8 Ke7 44.Qa7 Kf8 45.Qb8 Ke7=) 39...Kf7 40.f3 Qe7 41.Qh8 (41.Qe7 Ke7 42.g5 Kd7+=) 41...Qe3= 42.Qh7 Kf6 43.Qh4 Kg7 44.Kg2 ½–½. Valenta,Vit (2190) – Neoral,Antonin (2145), CZE–chT2E, 2008.

5.e3 (--> 4.e3 Nf6 5.d3).

5.f3 Be7 6.Nc3 d4 7.Ne4 Ne4 8.fe4 Qh6 9.Nf3=+ Nc6 10.Qc1 Qh5 11.c3 Bg4 12.Qc2 Bf3 13.ef3 Bh4 14.Ke2 Qg5 15.Bc1 dc3=+ 16.Bg5 Nd4–/+ 17.Kd1 Nc2 18.Kc2 Bg5 19.Kc3 Be3 20.g4?? Bd4–+ 21.Kc4 Ba1 22.h4 0–0–0 23.g5 Kb8 24.Bh3 Rd4 25.Kb5 a6 26.Ka4 b5 27.Ka5 Bb2 28.Ka6 Ba3 29.Ra1 Rb4 30.Bd7 Rd4 31.Bc6 b4 32.Bb5 Rd6 33.Ka5 Kb7 34.Rb1 Ra8 (34...Ra8 35.Ba6 Raa6 36.Kb5 Rdb6 37.Kc4 Rc6 38.Kb5 Rc2 39.Rb4 c6) 0–1. PawnPower – mohammadasaeian (1690), internet, 2006.

5.Nd2 Nbd7

6.c4 c6 7.c5 Qc7 8.e4 Be7 9.Ngf3 0–0 10.h4 b6 11.cb6 ab6 12.Rc1 Bb7 13.h5 Qb8 (13...h6 14.ed5 Nd5 15.Be2–/+) 14.Nh4 g6 15.g4 Qd8 16.hg6 fg6 17.f4? (better is 17.Nhf3 Ng4 18.ed5 cd5 19.Bh3=) 17...Ne4–+ 18.Nf5? (18.Ng6 hg6 19.de4 Bh4 20.Ke2 Ba6 21.Kf3 Rf4 22.Kg2 Rf2 23.Kh3–+) 18...Rf5 (18...gf5!? 19.de4 Bh4 20.Ke2 fe4 21.Qb3 Rf4 22.Qh3 Ba6 23.Kd1 Bf1 24.Rf1 Rf1 25.Nf1–+) 19.Ne4 Rf4 20.g5 (20.Qb3 Kg7 21.Nd2 Bf6–+) 20...Bg5 (better is 20...de4 21.Qb3 Kg7 22.Bh3–+) 21.Ng5 Qg5 22.Rc2 Raf8 23.Bh3 Rf3 24.Rg2 Rh3! (24...Rh3 25.Rg5 Rh1 26.Ke2 Rd1 27.Kd1 Rf5–+) 0–1. Williams,Barry M – Whaley,Michael G, NZCCA HT corr New Zealand, 1999.

6.g3 a5 7.Bg2 +=.

6.g3 g6 7.Bg2= Bg7 8.c4 c6 9.Ngf3 0–0 10.e4 de4 11.de4 c5 12.0–0 Rd8 13.Qb3 b6 14.Rad1 Bb7 15.Rfe1 Qc7 16.b5 Ne8 17.Nb1 Nf8 (17...a6!?=) 18.Nc3+= Ne6 19.Nd5 Bd5 20.ed5 e5 draws heavy fire 20...Nd4 21.Nd4 ed4 22.d6! Nd6 (22...Qd6 23.Ba8 Discovered attack; 22...Rd6 23.Ba8 Discovered attack (23.Ba8 Deflection); 22...Nd6 23.Ba8 Discovered attack) 23.Ba8 Ra8 24.Bc1 Qd7 25.Qf3 Rd8 26.Bg5 (26.Qd5!? Qb7 27.Qb7 Nb7 28.Bg5=) 26...f6+= 27.Qd5? (better is 27.Bf6!? Qf7 28.Re6+=) 27...Qf7–/+ 28.Bf4 (better is 28.Qf7!? Kf7 29.Bc1–+) 28...Qd5–+ 29.cd5 Nb5 30.Re7 Nc3 31.Rde1 Nd5 32.Ra7 c4 33.Rd1 d3 34.Kf1 (34.Bd2 f5 35.Bg5 Re8–+) 34...Bf8 (34...Nf4 35.gf4 f5 36.Rc7–+) 35.Bc1 Bc5 36.Rb7 Nc3 37.Rd2 (37.Re1–+) 37...Ne4 38.Rd1 c3 (worse is 38...Nf2 39.Re1 c3 40.Bh6–+; 38...Bf2?! 39.Bh6 Bc5 40.Rg7 Kh8 41.Ra7–+) 0–1. Valenta,Vit (2175) – Schnider,Gert (2270), Zalakaros op, 2004.

5.Nf3 Nbd7

6.e3 g6 7.Be2 Bg7 8.0–0 0–0 9.h3 b6 10.c4 c6 11.Nbd2 Bb7 12.Nb3 Rfe8 13.Rc1 Rab8 14.Rc2 Qe7 15.Qa1 dc4 16.dc4 c5 17.b5 e4 18.Nh2 Ne5 19.Rd2 Nfd7 20.Rfd1 f5? (better is 20...Rbd8!?+=) 21.Rd7!+– Nd7 (21...Nd7 22.Bg7 Decoy; 21...Qd7 22.Rd7 Combination) 22.Bg7 Ne5 23.Be5 Qe5 24.Qe5 Re5 25.Rd7 Ree8 26.Kf1 Rbd8?? (26...Red8 27.Re7+–) 27.Rd8 (better is 27.Rb7 Rf8 28.f3+–) 27...Rd8+/– 28.Ke1 Kf7 29.Nf1 a6 30.a4 ab5 31.ab5 Ra8 32.f3 ef3 33.Bf3 Bf3 34.gf3 Kf6 35.f4 g5 36.Kf2 gf4 37.ef4 Ra3 38.Nbd2 Kg6 39.Kg2 Ra2 40.Kg3 Kh5 41.Nf3 Rc2? 42.N1d2 Rc3 43.Kg2 h6 44.Kf2 Kg6 45.Ne5 Kg7? 46.Ndf3 Kf6? 47.Nd7 Ke7 48.Nb6 Kd6 49.h4 Rc2 50.Ke3 Kc7 51.Nd5 Kd6 52.Ne5 Rh2 53.Nf7 Kd7 54.h5 Kc8 55.Ne7 Kc7 56.Nh6 Rh5 57.Nhf5 Rh3 58.Ke4 Kb6 59.Ne3 Rh7 1–0. Szymanski,Leszek (1795) – Gajewski,Wojciech, Poznan Poland, Summer Open, 2012.

6.e3 g6 7.Be2 Bg7 8.Nc3 0–0 9.h3 c5 10.bc5 Nc5 11.0–0 d4 12.ed4 ed4 13.Nb5? Qb6–+ 14.a4 a6 15.Nbd4? Qb2 0–1. helmisflorin – pierre (2090), internet, 2011.

4.d4 e4

5.c4 dc4 6.Nd2 Qc6 7.e3? (7.Qc2 Nf6 8.Nc4 b5=+) 7...b5 (7...c3!? 8.Bc3 Qc3 9.Bb5 c6–+) 8.Bc3 (8.Qc2 Nf6=+) 8...Nf6–/+ 9.Ne2 Be7 10.Ng3 0–0 (10...Nd5 11.Qc2 f5 12.Be2–/+) 11.Qc2 Nd5 (11...Bb7 12.Be2–/+) 12.Nde4 (12.a4 Nb4 (< 12...Bb4 13.ab5 Qb5 14.Bc4 Qc4 15.Nc4 Bc3 16.Ke2+=) 13.Bb4 Bb4 14.ab5 Qb5 15.Bc4 Bd2 16.Kd2 Qb4 17.Qc3 Qd6=) 12...f5–/+ 13.Nc5 (13.Nd2 f4 14.ef4 Bd6=+) 13...f4=+ 14.ef4 a5 15.f3 (15.a4 Re8 16.ab5 Bc5 17.Kd2–+) 15...ab4–+ (15...Nf4 16.a4 ab4 17.ab5 (< 17.Bb4 Nd7–/+) 17...Ra1 18.Ba1+/–; 15...Rf4?! 16.ba5 Bc5 17.dc5 Nc3 18.Qc3 Qc5 19.Ne4–/+; 15...Nc3?! 16.Qc3 ab4 17.ab4 Ra1 18.Qa1–/+) 16.ab4 Nb4! (< 16...Nf4 17.Ra8 Qa8 18.Nge4=+; 16...Nc3?! 17.Ra8 Qa8 18.Qc3=+) 17.Qb2?? (17.Bb4 Ra1) 17...Ra1 18.Qa1 Nc2 (19.Kd1 Na1 20.Ba1 Bc5 21.dc5 Qc5–+) 0–1. alaamattar (2100) – stejoh (2000), net–chess.com, 2005.

5.e3 a5 6.b5 Qg6 =.

5.e3 b6 6.c4= c5 (better is 6...Nf6!?=) 7.dc5+/– bc5 8.bc5 Qc5 9.Qd5 Qd5 10.cd5 Nd7 11.Nc3 Ngf6 12.Bc4 (12.Bb5 a6 13.Bc6 Rb8+/–) 12...Bb4?? (better is 12...Rb8 13.Rb1 Ne5+=) 13.ab4+– (13...0–0 14.Nb5+–) 1–0. Sokolowski – Kowalkowski, corr 1. AMM Poland, 1991.

5.e3 Qc6 A) 6.Nd2 A1) 6...Nf6 7.c4 (7.b5 Qb6 8.c4 a6 9.c5=) 7...Bf5 8.cd5 Nd5 9.Ne2=; A2) 6...b5 7.a4 Ba6 8.c3 Nf6 9.f3=; A3) 6...Be6 7.c4 dc4 8.Qc2 f5 9.Bc4=; B) 6.b5 B1) 6...Qb6 7.c4 (7.Nd2 Nf6 8.c4 a6 9.c5=) 7...dc4 8.Qa4 Nf6 9.Nd2=; B2) 6...Qg6 7.Nd2 (7.c4 dc4 8.Nd2 Be6 9.Ne2=) 7...a6 8.c4 Nf6 9.cd5=; B3) 6...Qe6 7.c4 (7.Nd2 Nf6 8.c4 Bd6 9.c5=) 7...Nf6 8.cd5 Nd5 9.Bc4=; C) 6.Nc3 a6 7.f3 (7.Nge2 Nf6 8.Nf4 Be7 9.Be2+=) 7...ef3 8.Nf3 Nf6 9.Bd3=; D) 6.Be2 Qg6 (6...Bd7 7.Nd2 Qg6 8.Bf1 Nf6 9.c4=) 7.g3 (7.Bf1 Nf6 8.Ne2 a5 9.b5+=; 7.Bb5 Nd7 8.Bf1 Ngf6 9.Nd2+=) 7...Nf6 8.c4 dc4 9.Bc4+=; E) 6.Ne2 Nf6 7.Nf4 (7.Ng3 Be6 8.Nc3 a6 9.Nh5+=) 7...Bg4 8.f3 ef3 9.gf3+=; F) 6.c4 dc4 7.d5 Qg6 8.Qd4 Nd7 9.Qc4=.

5.e3 f5 6.c4= c6 (6...Nf6 7.cd5 Nd5 8.Bb5 c6 9.Be2=+) 7.Nc3 Be6 (7...Nf6 8.cd5 Nd5 9.Nd5 Qd5 10.Qh5 g6 11.Qe2=) 8.c5 (8.cd5 cd5 9.Rc1 Nc6+=) 8...Qc7= 9.Nh3 Nf6 10.Nf4 Bf7 (10...Qd7 11.Ne6 Qe6 12.b5+=) 11.Be2 g5 12.Nh5 Nbd7 (12...Bh5 13.Bh5 Kd8 14.0–0+=) 13.h4 (13.Nf6 Nf6 14.b5 b6+=) 13...g4 (13...Nh5 14.Bh5 g4 15.Bf7 Kf7 16.b5=) 14.Nf4 (14.Nf6 Nf6 15.b5 0–0–0=) 14...Bh6 15.Bc1 (15.Qd2 Bf4 16.ef4 Nh5=+) 15...Bf4=+ 16.ef4 h5 (16...Nh5 17.0–0=+) 17.g3 (17.b5 0–0–0=) 17...0–0 (17...0–0–0!?=+) 18.0–0= a6 (18...Rae8 19.Re1=) 19.Na4 (19.Re1 Rae8+=) 19...Rfe8 (19...Rae8 20.Re1=) 20.Nc3 (20.Re1 Be6+=) 20...Nf8 (20...Rf8 21.Re1+=) 21.Na4 N6d7 22.Re1+= Ne6 23.Be3 Qd8 24.Nc3 Nc7 25.a4 b5 26.a5 Nf8 27.Ra2 Kg7 28.Rd2 Ng6 29.Kg2 Nh4 30.gh4+/– Qh4 31.Rh1 Qf6 32.Rh2 Rh8 33.Qh1 Rh6 34.Kf1 Rah8 35.Ke1 Kf8 36.Bf1 Ke7 37.Ne2 h4+= 38.Kd1 Ne6 39.Kc2 Kd7 40.Kc3 Nf8 41.Kc2= Qg7 42.Kc3 Ng6 43.Kc2 Qf6 44.Kc3 h3 45.Ng3 Be6 46.Be2 Nh4 47.Qc1 R6h7 48.Rd1 Nf3 49.Bf3+/– gf3 50.Rg1 Ke7 51.Nh1 Rh4 52.Ng3 R8h6 53.Qf1 Qh8 54.Nh1 Kf6 55.Rg5 Bd7 56.Qg1 Rg4 57.Rg4 fg4 58.Ng3 Bf5 59.Nf5+– Kf5 60.Qg3 Qf6 61.Kd2 Rh4 62.Kc1 ½–½. Pastore,J – Revaud,B, FRA–ch op–B Paris, 1994.

5.e3 Qg6 A) 6.Nd2 A1) 6...a5 7.Ne2 (7.b5 Nf6 8.c4 Bd6 9.Ne2=; 7.ba5 Ra5 8.c4 Nf6 9.Ne2=) 7...Nf6 8.b5 Bd6 9.c4; A2) 6...Nf6 7.c4 (7.Ne2 Bd6 8.c4 0–0 9.c5=) 7...Bd6 8.Qc2 0–0 9.cd5=; A3) 6...Bg4 7.f3 ef3 8.gf3 Be6 9.e4=; A4) 6...Bd6 7.c4 Nf6 8.Ne2 c6 9.cd5+=; B) 6.Nc3 B1) 6...c6 7.Nge2 (7.b5 Nf6 8.Nge2 Bd6 9.a4+=; 7.Nce2 Bd6 8.Rb1 Nf6 9.Qd2+=) 7...Bd6 8.b5 Nf6 9.a4+=; B2) 6...Nf6 7.Nb5 Na6 8.Ne2 c6 9.Nbc3+=; C) 6.Ne2 Bd6 7.c4 (7.Nd2 Nf6 8.c4 0–0 9.c5=) 7...Nf6 8.c5 Be7 9.Nf4=.

5.e3 Be6

6.Bb5 c6 7.Ba4 Nd7 8.Ne2 f5 9.0–0 Ngf6 10.Nd2 Qc7 11.f4 (11.g3!?+=) 11...Ng4–/+ 12.Ng3?? (better is 12.Qc1–/+) 12...Ne3–+ 13.Re1 (13.Qe2 Nf1 14.Rf1–+) 13...Nd1 (13...Nd1 14.Rad1 Qf4–+) 0–1. von Rosenberg,Clemens – Walsh,Kevin (1640), IECC, 2013.

6.c4 a5 7.cd5 (7.Qa4 Qd7 8.b5 dc4 9.Nd2=) 7...Bd5 8.b5 Nf6 9.Nc3 =.

6.c4 dc4 7.Nd2 (7.Qc2 Qc6 8.Nd2 f5 9.Bc4=) 7...Qc6+= 8.Qc2 f5 9.Bc4 =.

6.c4 c6 7.Nc3 a6 (7...Nf6 8.Qc2=) 8.c5 Qc7 9.Nge2 Nd7 (9...Nf6 10.Nf4=) 10.Nf4+= Bf5 11.Be2 Ngf6 12.0–0 g5 13.Nh5 Nh5 14.Bh5 Nf6 15.Be2 Bg7 (15...h5 16.a4=) 16.a4 h5 17.h3 (17.b5 Ng4 18.g3 Nf6=) 17...Qd7 (17...g4 18.h4=) 18.a5 (18.Rb1 h4+=). Woschkat,Karl_Heinz (1695) – Rinaldi,Francesco (1850), IECG, 2000.

6.c4 Nc6 7.Nc3 Nf6 8.cd5 Bd5 9.Qc2 +=.

6.c4 Nd7 7.Qc2 (7.Nc3 Ngf6 8.cd5 Bd5 9.Nge2=; 7.cd5 Bd5 8.Nc3 Ngf6 9.Nge2=) 7...c6 8.Nc3 Ngf6 9.cd5 =.

6.c4 Nf6 7.cd5 (7.Qc2 dc4 8.Nd2 Qc6 9.Ne2=) 7...Nd5 8.Nd2 f5 9.Nc4 =.

6.Nd2 a5 7.b5 Nf6 8.c4 Qd7 9.Ne2 =.

6.Nd2 a6 7.Ne2 (7.Nb3 Nd7 8.Nc5 Nc5 9.dc5=) 7...Nf6 8.c4 dc4 9.Nc3 =.

6.Nd2 Qd7 7.Ne2 (7.c4 a5 8.b5 Nf6 9.Ne2=; 7.Be2 Nf6 8.c4 Be7 9.cd5=; 7.Nb3 Nf6 8.Nc5 Bc5 9.dc5=; 7.Rc1 b5 8.Nb3 Na6 9.Ne2=) 7...a5 8.ba5 Nf6 9.c4 =.

6.Nd2 Nd7 7.c4 (7.Rc1 Ngf6 8.c4 c6 9.cd5=) 7...Ngf6 8.Rc1 c6 9.cd5 =.

6.Nd2 Qd8 7.Ne2 (7.c4 Nf6 8.Ne2 dc4 9.Qc2=; 7.Rc1 Nf6 8.c4 Be7 9.Ne2=) 7...a5 8.b5 Nf6 9.c4 =.

6.Nd2 Be7 7.Ne2 (7.c4 Nf6 8.Ne2 a5 9.Qa4=; 7.Nb3 Nf6 8.Nc5 Bc8 9.c4+=) 7...a5 8.b5 Nf6 9.c4 =.

6.Nd2 Nf6 7.c4 (7.Ne2 a5 8.b5 Qd7 9.c4=) 7...c6 (7...Be7 8.Ne2= a5 9.Qa4=) 8.c5 (8.cd5 Bd5 9.Nh3=) 8...Qd7 (8...Qc7 9.Ne2=) 9.Ne2 Na6 (9...Be7 10.Nf4=) 10.h3 h6 (10...Nc7 11.Nf4=) 11.Nf4 Bf5 (11...Nc7!?=) 12.Ba6+= ba6 13.Qe2 Qb7 14.Nh5 (14.Nb3 Qb5+=) 14...Nh5= 15.Qh5 g6 16.Qd1 a5 17.Bc3 ab4 18.ab4 Be7 19.Qa4 0–0 20.Qa6 Rfb8 21.0–0 Bd7 22.f3 Bg5 23.Rfe1 (23.Kf2 f5=) 23...f5 24.Qb7 (24.Qa2 Qb5 25.fe4 Qd3 26.ed5 Qc3 (26...Be3 27.Kh1 Qc3 28.dc6 Kf8 29.Nf1 Bd4 30.cd7 Qb4 31.Rab1 Qc5 32.Rec1+–) 27.dc6 Kg7 28.cd7 Be3 29.Re3 Qe3 30.Kh1 Qd4+=) 24...Rb7 25.Ra6 Kf7 26.g4 (26.Kf2 Bh4 27.g3 Bf6=) 26...h5 (26...Ke6 27.Kf1+=) 27.Re2 (27.gf5 gf5 28.f4 Bh4=) 27...hg4 28.hg4 Bh6 29.gf5 gf5 30.f4 Bg7 31.Rh2 Rh8 32.Rh8 Bh8 33.Nb1 (33.Nb3 Rc7=) 33...Rc7+= 34.b5 cb5 35.Na3 Rb7 (35...Bf6 36.Ba5 Rb7 37.c6 Bc6 38.Rc6=) 36.Bb4 Bc8 37.c6 Re7 38.Ra5 Rc7 (38...a6 39.Be7 Ke7 40.Nc2+=) 39.Nb5 Rc6 40.Ra7 Kg6 41.Nc7 Be6 42.Ne6 Re6 43.Rd7 (43.Bc5!?+=) 43...Rb6= 44.Rd6 (44.Bc5 Rb1 45.Kf2 Rb2 46.Ke1 Rb3=) 44...Rd6 45.Bd6 Bf6 46.Kf2 Bh4 (46...Kf7 47.Ke2=) 47.Ke2 Kf7 ½–½. 1ricardo (1730) – pierre (2170), internet, 2008.

5.e3 Nf6

6.Bb5 c6 7.Be2 Be7 8.h3 (8.h4!?+=) 8...0–0 9.c4 dc4 10.Bc4 Be6 11.Bb3 (11.Nd2!?+=) 11...Nbd7 12.Nd2 a5 13.ba5 c5 (better is 13...Ra5 14.Ne2 Rg5–/+) 14.dc5? (better is 14.Ne2+=) 14...Nc5–+ 15.Be6?? (better is 15.Bd4 Bb3 16.Nb3 Nd3 17.Kf1–+) 15...Nd3 (15...fe6 16.Bf6 Nd3 17.Kf1 Bf6 18.f3 Ba1 19.Qa1–+; 15...Ne6?! 16.Bf6 gf6 17.Qg4 Kh8 18.Qe4= (18.Ne4?? Qe5 19.Rb1 f5–+); 15...Qe6?! 16.Kf1–+) 16.Kf1 (16.Ke2 fe6 (worse is 16...Nb2 17.Qb3–+; 16...Qe6?! 17.Bd4–+) 17.Bf6 A) 17...gf6?! 18.Ne4 Qe5 19.Nf3 (worse is 19.Qd3 Qa1 20.Qd7 Ba3–/+) 19...Nf4 20.ef4 Qe4 21.Kf1=; B) 17...Bf6?! 18.Ne4 Qd5 19.Qd3 Ba1 20.Nf3 Qa2 21.Nfd2–/+; C) 17...Qa6 18.Ne4 Nb2 19.Ke1 Nd1 20.Be7 Ne3 21.Bf8 Rf8–+) 16...Qe6 (better is 16...fe6 17.Bd4 Nf2 18.Nc4–+ (worse is 18.Kf2 Ng4 19.Ke2 Qa6 20.Nc4 Qc4 21.Kd2 Qd3 22.Kc1 Rac8 23.Bc5 Rc5 24.Kb2 Bf6 25.Ka2 Rc2 26.Qc2 Qc2)) 17.Bf6 (17.Bd4 Ra5 18.f3 Rd8 19.Ne4 Ne4 20.fe4 Qe4–+) 17...Bf6 (17...gf6?! 18.Qg4 Kh8 19.Qe4 Qe4 20.Ne4=; 17...Qf6?! 18.Ne4 Qe5 19.Nd2–/+) 18.Ne2 (18.Rb1 Ra5 19.Ne2–+) 18...Ba1 19.Qa1 Ra5 20.Nd4 (20.g4 Rfa8 21.Kg2 Ra3–+) 20...Qe7 (20...Qa6!? 21.Qb1 Rc8 22.N4b3–+) 21.a4 (21.g4 Ra3 22.Qb1 Rfa8–+) 21...Rfa8 22.Ke2 Ra4 23.Qc3 Qc5 (better is 23...Ra3 24.Qc4 Ra2–+) 24.Qc5 (better is 24.Ne4 Nf4! 25.Kf3–+) 24...Nc5 25.Rb1 g6 26.Rb5 (26.Rc1 R8a5–+) 26...R4a5 27.Rb4 f5 28.N4b3 Nb3 29.Rb3 b5 30.f3 (30.Rb4 Ra2 31.Rd4 Kf7–+) 30...Ra2 31.fe4 fe4 32.Rb5 (32.Ke1–+) 32...Rd8 33.Rb1 (33.Kf2–+) 33...Rdd2 34.Kf1 (34.Ke1 Re2 35.Kf1 Rg2 36.Rb8 Kg7 37.Rb7 Kh6 38.Rf7 Rgb2 39.Kg1 Re2 40.Kf1 Rec2 41.Kg1 Kg5 42.Rf4 Kh5 43.h4 Rd2 44.Rf8 Kh4 45.Rf6 Kg3 46.Rf1 Rg2 47.Kh1 Rh2 48.Kg1 Rag2) 34...Rg2 35.Rb8 Kg7 36.Rb7 Kh6 37.Rb4 (37.Rf7 Kg5 38.Rf4 Rgc2 39.h4 Kh5 40.Kg1 Rcb2 41.Rf7 Kg4 42.Rf8 Kg3 43.Rf1 Rg2 44.Kh1 Rh2 45.Kg1 Rag2) 37...Rgb2 0–1. grahamtrue (2165) – justforfun (2510), net–chess.com, 2015.

6.c4= a5 7.b5 (7.Qa4 Qd7 8.b5 Bd6 9.cd5=) 7...Be6 8.cd5 Qd5 9.Nc3 =.

6.c4= dc4 7.Bc4 Be6 8.Nd2 Bc4 9.Nc4 =.

6.c4= Nc6 7.Nc3 (7.Qc2 Ne7 8.Nc3 Bf5 9.Nge2=; 7.Nd2 Be6 8.Ne2 dc4 9.Nc3=; 7.cd5 Ne7 8.Nd2 Ned5 9.Qc2=; 7.c5 Qd8 8.Nc3 Be7 9.Nge2=) 7...Ne7 8.Qc2 Bf5 9.Nge2 =.

6.c4= Be6 7.cd5 (7.Qc2 dc4 8.Nd2 Qc6 9.Ne2=) 7...Nd5 8.Nd2 f5 9.Rc1 =.

6.c4 Be7 7.Qc2 A) 7...dc4 8.Bc4 (8.Nd2 b5 9.Ne4 Ne4 10.Qe4 c6 11.Bc3 Qd5 12.Qf4) 8...a5 9.b5 0–0 10.Nd2 Re8 11.Ne2 Bf8 12.Ng3; B) 7...Bf5 8.Nc3 dc4 (8...c6 9.cd5 Nd5 10.Nge2 Nc3 11.Nc3 Qg6 12.h3) 9.Bc4 a6 10.Nge2 Qc6 11.Qb3 0–0 12.Nd5; C) 7...c6 8.cd5 Qd5 9.Ne2 Bf5 10.Ng3 a5 11.Nc3 Qe6 12.d5; D) 7...a5 8.b5 dc4 (8...Nbd7 9.cd5 Nb6 10.Nc3 Bf5 11.Nge2 Nbd5 12.Ng3; 8...0–0 9.cd5 Qd5 10.Qc7 Bd6 11.Qc2 Be6 12.Nc3; 8...Be6 9.cd5 Bd5 10.Nc3 c6 11.Nd5 Qd5 12.Nh3; 8...Bf5 9.Nc3 c6 10.bc6 Nc6 11.cd5 Nd5 12.Nge2) 9.Bc4 Nbd7 10.Ne2 Nb6 11.Ba2 c6 12.Nbc3.

6.c4= Be7 7.Nc3 c6 8.cd5 cd5 9.Qd2 =.

6.c4 Be7 7.cd5 Nd5 (7...a5 8.Qa4 Bd7 9.b5 Nd5 10.Nc3 Nc3 11.Bc3 c6 12.b6) 8.Ne2 (8.Nc3 Nc3 9.Bc3 Qd5 10.Ne2 0–0 11.Qc2 Bd6 12.Bb2) 8...a5 (8...Bh4 9.Nbc3 Ne3 10.Qc1 Nd5 11.Nd5 Qd5 12.Qf4) 9.b5 (9.Nec3 ab4 10.Ne4 Qc6 11.Bd3 ba3 12.Ba3) 9...Nd7 (9...Bh4 10.g3 Be7 11.Nbc3 Nc3 12.Nc3) 10.Ng3 Qg6 11.Nc3 (11.Qc2 f5 12.Nc3) 11...Nc3 12.Bc3 Nf6 13.Bc4 h5 14.Rg1 Bd6 15.Nf1 0–0 16.Qc2 Be6 (16...Rd8 17.f4=) 17.Be6 fe6 18.f4 Nd5 19.Bd2 h4 20.h3 a4 21.g3 Be7 22.Qc4 hg3 (22...Qf5=) 23.Ng3 (better is 23.Qe2!?+=) 23...Bh4+= 24.0–0–0 (24.Kf2 Ne7 25.Bb4 Nf5 26.Bf8 Bg3 27.Ke2 Kf8–/+) 24...Bg3–/+ 25.Rg2 Ne7 26.Rdg1 Nf5 27.Be1 c6 28.Rg3 Ng3 29.Rg3 Qf5 30.b6 Rf6 31.h4 Rg6 32.Rg6 Qg6 0–1. muess26 – marekt, ChessWorld.net, 2009.

6.c4= Bg4 7.Qc2 c6 8.Nc3 Qe6 9.cd5 =.

6.c4 Bg4 7.Be2 Be2 8.Qe2 =.

6.Nd2 A) 6...a5 7.ba5 (7.b5 Bg4 8.Qc1 c6 9.bc6+=; 7.c4 ab4 8.c5 Qd8 9.ab4+=) 7...Bg4 8.Be2 Be2 9.Ne2=; B) 6...Bg4 7.Be2 (7.Ne2 a5 8.c4 ab4 9.c5+=) 7...Be2 8.Ne2 a5 9.b5=; C) 6...Be6 7.Ne2 (7.c4 Be7 8.Ne2 a5 9.Qa4=) 7...a5 8.b5 Qd7 9.c4=; D) 6...Be7 7.c4 Be6 8.Ne2 a5 9.Qa4=.

6.c4 c6

7.Qc2 Nbd7 8.Nc3 (8.cd5 cd5 9.Nh3 Be7=+) 8...a6 (8...Be7 9.cd5 cd5 10.Nb5+–) 9.c5 (9.cd5 cd5 10.Rc1 Be7=) 9...Qe7 (9...Qc7 10.Nge2=) 10.Be2 g6 (10...Qe6 11.Nh3=) 11.Nh3+= Bg7 12.0–0 Nf8 13.Nf4 g5 (13...Ne6 14.Ne6 Be6 15.f3+=) 14.Nh5 Nh5 15.Bh5 g4 16.Ne2 Qg5 17.Ng3 Nd7 18.f3 gf3 19.gf3 Nf6 20.f4–/+ Qh4 21.Bd1 Bh3–/+ 22.Re1 Rg8 23.Kh1 Bh6 24.Rg1=+ Kd7 25.Bc3 Rg6 26.Be1 Rag8 27.a4 Bf4 28.ef4+/– Qf4 29.b5 e3= 30.Qb1 Ne4 31.bc6+/– bc6 32.Qb7 Kd8 33.Qa8 Bc8 34.Rg2 Rh6 35.Kg1? Ng3= 36.Rg3 Rg3 37.Bg3 e2 38.Be2?? Qe3 (39.Kf1 Rf6 40.Ke1 Qc3 41.Kd1 Qa1 42.Kc2 Qa2 43.Kd1 Qa4 44.Kc1 Qa1 45.Kc2 Qd4–+; 38...Qd4 39.Kg2 Qa1 40.Qb8 Qa4 41.Qc7 Ke8 42.Qc8 Ke7 43.Qc7 Ke8 44.Qb8 Kd7 45.Qa7 Ke6 46.Ba6 Qc2 47.Kg1 Qd1 48.Kf2 Rf6 49.Kg2=) 0–1. Kucharkowski,Jens – Solare,Juan, Orang–Utan Invitational, 2001.

7.Qc2 Qe6 8.Nd2 Bd6 9.Be2 =.

7.Qc2 Bg4 8.cd5 cd5 9.Nd2 =.

7.Nc3 Be7 8.Be2 dc4 9.Bc4 =.

7.c5 Qe7 =.

7.Nd2 Be7 8.Rc1 0–0 9.Ne2 =.

7.Nd2 Bf5 =.

7.Ne2 dc4 8.Nbc3 –/+.

7.Ne2 Be7 8.Ng3 (8.c5 Qc7=) 8...0–0 9.Be2 Be6 10.Nd2 Nbd7 (10...a5 11.c5 Qc7 12.0–0=) 11.0–0 Rac8 12.Rc1 Qb8 (12...Rfd8 13.f3 ef3 14.Nf3 dc4 15.Bc4=) 13.c5 Rfe8 14.f3 ef3 15.Bf3 Nf8 16.Rb1 Bd8 17.e4 de4 18.Nge4 Ne4 19.Be4 Bg5 20.Re1 ½–½. Sokolowski – Rosinski, corr 1. AMM Poland, 1991.

7.cd5 cd5

8.Nc3 a6 9.Be2 Be7 10.h3 (10.Rc1 0–0=) 10...Nbd7=+ 11.Qd2 Nb6 12.b5 (12.Rc1 Nc4 13.Qc2 b5=+) 12...a5 (12...Nc4 13.Bc4 dc4 14.ba6 Ra6 15.Qe2–/+) 13.a4 (13.Qc2 0–0=+) 13...Bf5 (13...Nc4 14.Bc4 dc4=) 14.Ba3= Qc7 15.Be7 Qe7 16.g4 (16.Rc1 Rc8=) 16...Bg6 17.h4 h5 (17...Rc8 18.h5 Qc7 19.Nd1 Bh5 20.gh5+– (< 20.Rh5 Nh5 21.gh5 Qh2=+)) 18.g5= Ng4 19.Nh3 f5 (19...Rc8 20.Rc1=) 20.Nf4+= Bf7 21.Rh3 (21.Bg4 hg4 22.g6 Be6=) 21...g6 (21...0–0 22.g6 Be6 23.Nh5+=) 22.Bd1 (22.f3 ef3 23.Rf3 Rc8+=) 22...Rc8= 23.Bb3 Can d5 get defended? 23...Qb4 24.Ncd5 Qb3 (25.Nb6 Rc2 26.Qa5 0–0+=; 24...Nd5!? 25.Bd5 Qd2 26.Kd2 Bd5 27.Nd5 Nf2=). Widziszewski – Sokolik, corr 1. AMM Poland, 1991.

8.Nc3 Be7

9.Rc1 Nc6 10.Nge2 (10.f3 Qe6= (10...0–0 11.fe4 Ne4 12.Ne4 de4 13.d5 Ne5; 10...ef3 11.Nf3 Bf5 12.Bd3 Bd3 13.Qd3 0–0; 10...a6 11.fe4 de4 12.Nge2 0–0 13.Ng3 Ng4) 11.fe4 Ne4 12.Ne4 Qe4 13.Qf3 Bf5; 10.b5 Nd8 11.Nge2 0–0 12.Ng3 Be6 13.Be2 Rc8; 10.Be2 a6 (10...0–0 11.f3 Bf5 12.fe4 Be4 13.Nf3 Ng4; 10...Bf5 11.g4 Be6 12.f3 ef3 13.Bf3 0–0) 11.f3 0–0 12.fe4 de4 13.d5 Ne5; 10.Qd2 0–0 (10...Bf5 11.Nge2 0–0 12.Ng3 Bg4 13.Be2 Be2; 10...a6 11.f3 0–0 12.Nge2 ef3 13.gf3 Re8; 10...Bg4 11.f3 ef3 12.gf3 Bf5 13.Nge2 0–0) 11.b5 Nd8 12.Nge2 Bd7 13.Ng3 Rc8) 10...0–0 (10...a6 11.f3 ef3 12.gf3 0–0 13.Bg2 Rd8; 10...Bg4 11.h3 Be6 12.Nf4 0–0 13.Ne6 Qe6) 11.Nf4 a5 (11...a6 12.f3= (12.Be2 Rd8 13.f3 g5) 12...Bd7 13.fe4 de4) 12.b5 Nd8 13.Qb3 Be6 14.Be2 Rc8 15.0–0 g5 (15...Rc7!?=) 16.Ne6+/– Ne6 17.f3 ef3 18.Rf3 Ng7 19.Bd3 Qe6 20.Re1 g4 (20...Rc7 21.Rf6 Bf6 22.Nd5+/–) 21.Rff1+/– Bd6 22.g3 Rfe8 23.Qa4 b6 24.e4 de4 25.Ne4 (25.Be4 Kh8 26.Qd1 Rc3 27.Rf6 Rg3 28.hg3 Qf6 29.Qg4 h5–/+) 25...Ne4+= 26.Re4 (26.Be4 Qa2 27.Re2 Re4 28.Re4 Qb2 29.Rg4 Rc2–+ (29...Qa3?! 30.Qa3 Ba3 31.Rf6–/+; 29...Ba3?! 30.Rgf4–/+)) 26...Qa2 27.Re8 Re8 28.Qc2 (28.Qc2 Ba3 29.Bh7 Kh8 30.Ba3 Qa3 31.Bd3+=). Rosner,Dirk – Blankenberg, CiF, 1999.

9.Qc2 =.

9.Be2 0–0 10.Rc1 a6 (10...Nc6 11.f3 Bf5 12.fe4 Ne4 13.Nf3 Qh6; 10...Na6 11.Na4 Nc7 12.Qc2 Nfe8 13.f3 Qg6; 10...Qd8 11.Qa4 Bd7 12.Qc2 Bf5 13.Na4 b6) 11.f3 b5 12.g4 Bb7 13.Nh3 Nbd7.

9.Be2 a6 A) 10.Rc1 Be6 (10...0–0 11.f3 Bf5 12.g4 ef3 13.Bf3 Bg6; 10...Nc6 11.f3 0–0 12.fe4 de4 13.d5 Ne5; 10...Bd7 11.g4 0–0 12.g5 Ne8 13.h4 Nc7; 10...Bf5 11.g4 Be6 12.Qa4 Qd7 13.g5 Qa4) 11.Na4 b6 12.Qc2 Bd7 13.f3 0–0; B) 10.Qd2 0–0 (10...Be6 11.Rc1 0–0 12.Na4 b6 13.Bc3 Rc8; 10...Bd7 11.f3 0–0 12.Rd1 Rc8 13.Rc1 Nc6; 10...Bf5 11.f3 Nc6 12.fe4 Ne4 13.Ne4 Be4; 10...Nc6 11.Rc1 0–0 12.Na4 Qc7 13.Nc5 Bf5) 11.f3 a5 12.b5 Bf5 13.fe4 Ne4; C) 10.Qc2 0–0 (10...Bf5 11.Qa4 Bd7 12.Qb3 0–0 13.f3 b5) 11.Rc1 Bf5 12.Bd1 Rc8 13.Nge2 Bd7; D) 10.f3 0–0 (10...Nc6 11.fe4 de4 12.d5 Nd8 13.Qd4 Qb8; 10...Bf5 11.g4 ef3 12.Bf3 Be6 13.Nh3 a5; 10...Qe6 11.Rc1 0–0 12.fe4 Ne4 13.Nf3 Nd7; 10...Bd7 11.Qc2 ef3 12.Nf3 Nc6 13.Ne5 Rc8) 11.Rc1 Be6 12.fe4 de4 13.g4 Qd8.

9.Be2 Nc6 A) 10.b5 Nd8 (10...Na5 11.Qa4 Qd8 12.f3 0–0 13.fe4 de4; 10...Nb8 11.a4 Be6 12.Ba3 Qc7 13.Qb3 0–0; 10...0–0 11.bc6 Qc6 12.Qb3 Be6 13.Rc1 Qd7; 10...Rb8 11.bc6 bc6 12.Qc2 Qc7 13.Na4 0–0) 11.a4 Be6 12.Ba3 Qc7 13.Qb3 Rc8; B) 10.Na4 0–0 (10...Bf5 11.Bc3 Qc7 12.Nc5 0–0 13.Rc1 b6; 10...Nd8 11.Rc1 0–0 12.Nc5 a6 13.Nb3 b6; 10...Nd7 11.Rc1 0–0 12.Nh3 a5 13.b5 Nd8; 10...b6 11.Rc1 0–0 12.b5 Nb8 13.Qb3 a6) 11.Rc1 Bf5 12.Nc5 b6 13.Nb7 Qb8; C) 10.Nb5 Qd8 (10...Qb8 11.Nc3 Bd6 12.b5 Ne7 13.h4 Nf5) 11.Nc3 0–0 12.Rc1 a6 13.Na4 Bd6; D) 10.Rc1 0–0 (10...a6 11.b5 ab5 12.Bb5 0–0 13.Nge2 Be6; 10...Bf5 11.g4 Be6 12.f3 ef3 13.Bf3 Rc8) 11.Nb5 Qd8 12.Nc3 Bf5 13.h4 Rc8.

9.Nge2 0–0 A) 10.Rc1 Nc6 (10...a6 11.f3 a5 12.b5 Re8 13.fe4 Ne4; 10...a5 11.Qa4 Bd7 12.b5 Bg4 13.h3 Bf5; 10...Na6 11.f3 Re8 12.fe4 Ne4 13.Ne4 de4) 11.b5 Na5 12.Nf4 a6 13.Qc2 Bd7; B) 10.Nf4 a5 (10...Nc6 11.Rc1 a6 12.Be2 Bf5 13.0–0 Rac8; 10...Bg4 11.f3 ef3 12.gf3 Bf5 13.Rc1 Nc6; 10...Bf5 11.Rc1 Nc6 12.Be2 a6 13.0–0 Rac8; 10...Be6 11.Rc1 Nbd7 12.Nb5 Qb6 13.Ne6 fe6) 11.Qb3 Be6 12.Ne6 Qe6 13.ba5 Nc6.

9.Nge2 a5 A) 10.b5 0–0 (10...Bg4 11.h3 Be6 12.Nf4 0–0 13.Rc1 Rc8) 11.Nf4 Nbd7 12.a4 Nb6 13.Be2 Qd8; B) 10.Qa4 Bd7 (10...Nc6 11.Rc1 0–0 12.b5 Nb8 13.Nf4 Nbd7) 11.b5 Bg4 12.h3 Bf5 13.Qb3 0–0; C) 10.Rc1 Bd7 (10...0–0 11.Nb5 Qd8 12.Nc7 Ra7 13.Nb5 Ra6) 11.b5 0–0 12.Nf4 Rc8 13.Be2 Be6.

9.Nge2 Nc6 A) 10.Rc1 0–0 (10...Bg4 11.h3 Be6 12.Nf4 0–0 13.Be2 Rfc8) 11.Nf4 a6 12.f3 Bd7 13.fe4 de4; B) 10.Nf4 0–0 (10...Bf5 11.b5 Nd8 12.Qb3 Be6 13.Rc1 Rc8; 10...Bg4 11.f3 ef3 12.gf3 Be6 13.Rc1 Rc8) 11.Rc1 a6 12.Be2 Bd7 13.0–0 Rfc8; C) 10.f3 Be6 (10...ef3 11.gf3 Be6 12.Nf4 Rc8 13.b5 Nd8; 10...0–0 11.Rc1 ef3 12.gf3 Re8 13.Qd3 Bd7) 11.fe4 Ne4 12.Ne4 de4 13.Nc3 Bf5; D) 10.b5 Nd8 (10...Na5 11.Nf4 0–0 12.Rc1 a6 13.Qc2 Bd7; 10...Nb8 11.a4 Qd8 12.Nf4 0–0 13.Be2 a6) 11.a4 Qc7 12.Nf4 Qa5 13.Rc1 Ne6.

5.f3 Nf6–/+

6.Bc1 A) 6...a5 7.b5 (7.ba5 Be7 8.Bd2 Nc6 9.Bg5 h6 10.Bf6) 7...Be7 8.Bg5 h6 9.Bf6 Qf6 10.Nc3; B) 6...Qa6 7.c3 (7.e3 Qe6 8.c4 dc4 9.Qa4 c6 10.b5; 7.Bd2 Qb6 8.e3 Be6 9.Nc3 Nbd7 10.Na4; 7.Qd2 Bd6 8.e3 Qc6 9.b5 Qd7 10.c4) 7...Qc6 8.Bf4 a5 9.Qb3 ab4 10.cb4; C) 6...Be6 7.Bg5 (7.g4 h6 8.Bg2 Nbd7 9.Nh3 0–0–0 10.Nf4; 7.g3 Qb6 8.Bg5 Nbd7 9.Nc3 h6 10.Bc1) 7...Be7 8.e3 0–0 9.Nd2 Nbd7 10.c4; D) 6...Be7 7.Bg5 (7.g4 h6 8.Nh3 Qb6 9.Nc3 Bd7 10.Bg2; 7.e3 Qc6 8.b5 Qe6 9.c4 Nbd7 10.Nh3; 7.g3 a5 8.b5 0–0 9.Bf4 Qb6 10.e3) 7...h6 8.Bf6 Qf6 9.e3 a5 10.Nc3.

6.Qd2 A) 6...a5 7.ba5 (7.b5 Be7 8.e3 Be6 9.Ne2 0–0 10.Nf4) 7...Nc6 8.e3 Na5 9.Bc3 Qb6 10.Qc1; B) 6...Bd7 7.e3 (7.Nc3 a5 8.ba5 Qa6 9.g4 ef3 10.ef3; 7.g4 h6 8.Qc3 Na6 9.Nd2 0–0–0 10.0–0–0; 7.Qe3 a5 8.fe4 Ne4 9.Nd2 ab4 10.Ne4; 7.Qc3 a5 8.ba5 Nc6 9.Nd2 Qe6 10.e3) 7...a5 8.ba5 Qe6 9.Nc3 ef3 10.Nf3; C) 6...Be7 7.e3 (7.Nc3 0–0 8.fe4 de4 9.e3 a5 10.ba5; 7.g4 h6 8.Qc3 a5 9.ba5 Nc6 10.Nd2) 7...Be6 8.Ne2 Nbd7 9.Nf4 Bf5 10.Nc3; D) 6...Qe6 7.e3 (7.Qc3 Bd6 8.e3 ef3 9.gf3 Qe7 10.Ne2; 7.Qe3 a5 8.b5 Bd6 9.g4 ef3 10.Qe6) 7...a5 8.ba5 ef3 9.gf3 Nc6 10.Bh3.

6.e3 Be7 (6...Qe6 7.Nd2+= (7.Qc1 a5 8.b5 Nbd7 9.c4 Nb6 10.c5; 7.c4 dc4 8.Nc3 a5 9.b5 Nbd7 10.d5; 7.Nc3 a5 8.ba5 Ra5 9.fe4 Ne4 10.Ne4; 7.Qe2 Bd6 8.Nd2 a5 9.c4 ab4 10.c5) 7...Bd6 8.fe4 Ne4 9.Bd3 0–0 10.Be4; 6...a5 7.ba5 (7.b5 Qe6 8.Qe2 Nbd7 9.Nd2 Nb6 10.c4; 7.Bc3 ef3 8.gf3 ab4 9.Bb4 Qe6 10.Bd2) 7...Qe6 8.c4 ef3 9.Qf3 Ng4 10.Nc3; 6...Qe7 7.Qd2 (7.f4 Be6 8.Nd2 Qd7 9.c4 Be7 10.cd5; 7.Bc1 Be6 8.Ne2 a5 9.b5 Qd7 10.Nf4; 7.c4 a5 8.b5 ef3 9.Qf3 Bg4 10.Qf4) 7...Be6 8.Ne2 Nbd7 9.Nf4 0–0–0 10.Nc3; 6...ef3 7.gf3 (7.Nf3 a5 8.ba5 Qe6 9.Ne5 Nfd7 10.c4) 7...a5 8.b5 Nbd7 9.c4 Qe6 10.Qc1) 7.Nd2 (7.c4 a5 8.b5 Qe6 9.Nd2 ef3 10.Qf3) 7...Bf5 (7...ef3 8.Ngf3 Qe6 9.Ne5 a5 10.b5) 8.fe4 (8.c4 0–0+= (8...ef3 9.Qf3 Bg4 10.Qf2) 9.Qc2 Qd7 10.cd5) 8...Ne4–/+ 9.Ne4 Be4 10.c4 (10.Nf3 Qg6+=) 10...0–0 (10...Qh6 11.Nf3–/+) 11.c5 (11.Nf3 a5 12.b5 Qe6+=) 11...Bh4 (better is 11...Qh6 12.Qe2 Bg5–/+) 12.g3?? (better is 12.Kd2 Qe7 13.Nf3–/+) 12...Bg3! 13.hg3 (13.Kd2 Qf6 14.hg3 Bh1–+) 13...Qg3 14.Kd2 Bh1 15.Bd3 Qf2 (better is 15...Re8 16.Qe1 Qe1 17.Re1–+) 16.Kc1 (16.Ne2 Bf3 17.Qf1 Qf1 18.Rf1 Be2 19.Ke2–+) 16...Qe3 17.Kb1 (17.Kc2 Be4–+) 17...Be4 18.Be4 Qe4 (18...de4 19.Bc1 Qd3 20.Qd3 ed3 21.Kb2–+) 19.Ka2 Nc6 20.Ne2 Rae8 (20...Rae8 21.Nc3 Qg2–+) 0–1. Galagus – lusik, playchess.de, 2002.

4.e3 a5

5.b5 c6 6.a4 b6 7.bc6 Nc6 8.Bb5 Bd7 9.Ba3 (9.Nf3!? Rc8 10.0–0=) 9...Qg6+= 10.Bf8 Qg2 (10...Kf8 11.g3+=) 11.Qf3= Qf3 12.Nf3 Kf8 13.Bc6 Bc6 14.Ne5 Rc8 15.Nc6 Rc6 16.Nc3 Nf6 17.Rb1 Ke7 18.Rb5 Exerts pressure on the isolated pawn 18...Kd6 19.Rg1 g6 20.Ke2 h6 21.Rgb1 Kc7 22.Kd3 Rd8 23.Ne2 Ne4 24.f4?? (better is 24.Nf4 Rcd6 25.f3 Nc5 26.Kd4=) 24...Nf2 25.Kd4 Rc4 26.Ke5 Ng4 0–1. mikebaldini (1645) – ebutaljib (1805), gameknot.com, 2015.

5.b5 Qe6 6.d3 (6.c4 dc4 7.Qc2 Nd7=) 6...Nd7 (6...Nf6 7.c4=+) 7.Nd2 (7.Nf3 Ngf6=) 7...c6 (7...Ngf6 8.Ngf3=+) 8.bc6 (8.d4 Ngf6=) 8...Qc6 (8...bc6 9.Rb1=) 9.Ngf3 (9.d4 f6=) 9...f6 (9...Bd6 10.c4=) 10.Be2 (10.c4 Bd6=) 10...Ke7 (10...b5!?=) 11.c4+= Ke6 (11...Kf7 12.Rc1+=) 12.0–0 (12.d4 e4+/–) 12...Bc5 (better is 12...Kf7+/–) 13.cd5 Kd5 14.Rc1 (better is 14.Nd4 Qa6 15.Qb3 Kd6+–) 14...a4? (better is 14...Qb5 15.Nc4 Ne7+–) 15.d4 Qb6 16.Nc4 Qb3 17.dc5 Qd1 18.Rfd1 Ke6 19.Rd6 Ke7 20.Rcd1 Nc5 21.Rd8 Ne6 22.R8d2 e4 23.Nd4 Nh6 24.Nb6 Ra5 25.Nc8 Rc8 26.Ne6 Ke6 27.g3 Nf7 28.Rd7 h6? 29.Rb7 Rc2 30.Bh5 Rh5= 31.g4 Rd5 32.Rd5 Kd5 33.Rf7 Rb2+= 34.Rg7 Rb1 35.Kg2 Ra1 36.Rg6 Ke5 37.Rh6 Ra3 38.Rh8 Rd3 39.h4 Kd6 40.Rf8 Ke5 41.h5 White fights for the Initiative 41...Rc3 42.h6 Rc7 43.Ra8 Rb7 44.Ra4 Rh7 45.Ra5 Ke6 46.Rh5 Kf7 47.Kg3 Kg8 48.Kf4 Re7 49.h7 Kh8 50.Rh6 Re6 51.g5 fg5= 52.Kg5 Rh6 ½–½. uno (1800) – Ziggy2 (1635), ICC, 2003.

5.b5 Bf5 6.c4 Nf6 7.cd5 Nd5 8.d3 Nb6 9.Nf3 N8d7 10.Nc3 (10.d4 e4 11.Qc2 Be7=) 10...Rd8 (10...Be7 11.Rc1=) 11.d4 Be7 (11...Qf6 12.Bd3=) 12.Ne5 Ne5 13.de5 Qe5 14.Qb3 (14.Qf3 Bc8=) 14...0–0+= 15.Ne2 (15.Rd1 Bg4 16.Nd5 Bd1 17.Be5 Bb3 18.Ne7 Kh8–/+) 15...Qd6 16.Nd4 a4 17.Qc3 Bf6 18.Be2 (18.Rd1 Be4+=) 18...Be4 19.0–0 Bd4 20.ed4 (20.Qd4? Qg6 21.Qg7 Qg7 22.Bg7 Kg7–+) 20...Nd5 21.Qd2 (21.Qg3 Nf4 22.Bf3 f5+=) 21...Nf4 22.f3 Bd5 23.Rfe1 Ne2 24.Qe2 Qd7 25.Rac1 Rfe8 26.Qd3 Re1 27.Re1 Re8 28.Re5 (28.Bc3 Re1 29.Be1 Be6=) 28...Re5 (28...f6 29.Re8 Qe8 30.h3=) 29.de5 Bc6 (29...b6 30.Bd4=) 30.Qd7 Bd7 31.b6 cb6 (31...c5 32.Kf2=) 32.g4 ½–½. Woelfelschneider,Peter – Kaniak,Andrzej, email 4AMM–F, 1998.

5.c4 dc4 6.Bc4 ab4 7.Nf3 f6 (worse is 7...ba3 8.Ne5 Nh6 9.Na3+=) 8.0–0 Nc6 9.Qc2 Nh6 10.d4 ed4 11.ed4 Be7 (11...ba3 12.Ba3 Qd7 13.Re1 Be7 14.d5+–) 12.d5 Ne5 13.Ne5 fe5 14.ab4 Ra1 15.Ba1 0–0 16.Nd2 Nf7 (16...Qb4? 17.d6 Kh8 18.de7 Qe7 19.Qe4+–) 17.Bc3 Qf6 18.Bd3 g6 19.f4 Qd6 20.Re1 Bh4 21.g3 (21.fe5? Qb6 22.Kh1 Be1–+) 21...Bf6 22.Ne4 Qb6 23.Kg2 Bg7? (better is 23...Bh8!?+=) 24.Bb2 1–0. Woelfelschneider,Peter (2220) – Morin,Stephane (1950), WC–2013–S–00007, 2010.

5.c4 Nf6 6.ba5 (6.Nf3 Nbd7=) 6...Ra5 (6...Nc6 7.cd5 Nd5 8.a6 ba6 9.Nc3=+) 7.cd5 (7.Bc3 Ra8=+) 7...Nd5 8.Nc3 (8.d4 ed4 9.Bd4 Nc6=+) 8...Be7 (8...Nc6 9.Nf3=+) 9.Nb5 Qd7 (9...Qf6 10.f4 Qg6 A) 11.Be5? Bh4 12.g3 Bg3 13.Ke2 Bg4 (13...Rb5?! 14.hg3 Qg3 15.Qa4 Bg4 16.Kd3 Bf5 17.Ke2–/+) 14.Nf3 Qc6 (14...Rb5?! 15.hg3 Nc6 16.Kf2=+) 15.Nc7 Nc7–+; B) 11.Qb3=+) 10.Qb3 0–0 11.Be5 Nc6 12.Bb2 Na7 (12...Ra8 13.d4=) 13.Na7+= Ra7 14.Nf3 Nf6 (14...Rd8 15.Bc4+=) 15.Bc4+/– Qa4 (15...Ra5 16.Ne5 Qe8 17.Bc3+/–) 16.0–0 (better is 16.Qa4 Ra4 17.d3+/–) 16...Qa3?? (better is 16...Qb3 17.Bb3 Bf5+/–) 17.Ba3+– Bf5 (17...Ba3 18.Ra3 Ra3 19.Qa3 Re8+–) 18.Be7 1–0. Benussi,Alberto (1740) – Lupini,Stefano (2875), Schakmata D SEMI, 1997.

5.Nf3 Nd7 =.

5.b5 c5

6.bc6 bc6 7.c4 Nf6 8.Qc2 (8.d4 e4=) 8...Nbd7 9.d4 ed4 ½–½. Guzik,Jolanta (2135) – Musialkiewicz,Pawel (2145), Open A – XVII Miedzynarodowy Festiwal Poland, 2012.

6.d4 ed4 7.ed4 c4 8.Nf3 Nf6 9.a4 Be7 10.Ba3 Qe6 11.Be2 Ne4 12.0–0 0–0 13.Re1 Ba3 14.Ra3 Qd6 (14...Nd7 15.Nfd2 f5 16.f3 Nd2 17.Qd2=) 15.Bc4 Nf2 16.Kf2 dc4 17.Rae3 Nd7 18.Nbd2 Nf6 19.Kg1 Qb4 (better is 19...Nd5!? 20.Re8 Nb6+=) 20.c3+/– Qd6 21.Nc4 Qf4 22.Nfe5 Bg4 23.Qb3 (23.Ng4?! Ng4 24.Rh3 Qf2 25.Kh1 Qf4=) 23...Be6 24.Rf1?? (better is 24.Qc2+–) 24…Qe3!!–+ (24...Qe3 25.Ne3 Bb3–+) 0–1. Illescas Lopez,Antonio – Romero Rodriguez,Juan, Malaga City–ch, 2003.

6.Nf3 f6 7.c4 d4 8.ed4 cd4 9.d3 Bg4 10.Be2 Nd7 (10...Be6 11.0–0=) 11.0–0 (11.Nd4 Be2 12.Ne2 Nc5+/–) 11...Nh6 (better is 11...Be6!?=) 12.Nd4+/– ed4 13.Bg4 Ng4 (13...Nc5 14.Bf3+–) 14.Qg4 0–0–0 15.Qd4 (worse is 15.Bd4 f5 16.c5 h5 17.cd6 hg4+/–) 15...Qc7 (15...Qd4 16.Bd4 Bc5 17.Bc3+/–) 16.Qa7 Bd6 17.Qa8 Nb8 18.Qa7 (18.g3!? Kd7 19.Bd4+–) 18...Bh2 (18...Nd7 19.h3+–) 19.Kh1 Rd3 20.Nc3 Rhd8?? (better is 20...Be5 21.Na4 Bb2 22.Nb2 Rd6+=) 21.b6?? (better is 21.Nd5 R8d5 22.cd5+–) 21...Qf4?? (21...Qe5 22.Rfe1 Qh5–+) 22.Qa5?? Qh4–+ 23.Rad1 Bg3 24.Kg1 Qh2# 0–1. Fournier,Frederic – Blackdragon68 (2110), Active, 2012.

5.b5 Nd7

6.a4 Ngf6 7.Nf3 e4 8.Nd4 c5 9.bc6 bc6 10.Be2 Rb8 11.Ba3 (11.Bc3 Ra8=) 11...Qc7+= 12.Qc1 (12.Bf8 Nf8 13.Nc3 Ne6+=) 12...Ba3 13.Qa3 Ne5 14.Nc3 Rb4 15.Na2 Rb7 16.Qc3 0–0 17.Nc1 Bg4 18.Bg4 Nfg4 (worse is 18...Neg4 19.Qc6 Qc6 20.Nc6+/–) 19.h3 Nf6 20.Nce2 (20.Ncb3 Ra8+=) 20...Rfb8–/+ 21.0–0 Rb4 22.d3 Nfd7 23.Nf5 (23.de4 de4 24.Nb5 Qd8+=) 23...Nb6–/+ 24.Ned4 Na4 25.Ra4? Ra4–+ 26.f4 ef3 27.Nf3 Re8 28.N3d4 Rb4 29.Ne2 Qb6 30.Qa1 g6 31.Nh6 Kf8 32.Nd4 f6 33.Kh1 Kg7 34.Ng4 Ng4 35.hg4 Re3 36.c4 Rb2 37.Nf3 Ree2 38.g5 fg5 39.cd5 g4 40.Ng5 Rg2 41.Ne6 Kh6 42.Qc1 Rbd2 43.d4 Qb3 (43...Qb3 44.Qd2 Rd2 45.Ng5 Qg3 46.Nf7 Kg7 47.Rf2 Rd1 48.Rf1 Rf1#; 43...Rh2 44.Kg1 Qb3 45.Qd2 Rd2 46.Rf8 Qe3 47.Kf1 Qe2 48.Kg1 Qg2#) 0–1. Rao,DRKS – Pavan Kumar,T, (year?).

6.c4 Ngf6 7.d4 e4 8.c5 Qe6 9.g3 (9.Ne2 Be7=) 9...c6 (9...Qf5 10.Nc3+=) 10.b6 (10.Nc3 Qf5=) 10...Ng4 11.Bh3 Ndf6 12.Ne2 (12.Nd2 Qf5 13.Qe2 Be7=) 12...Qf5 13.0–0 Qh5 14.Nf4 Qh6 15.Kg2?? (better is 15.Bg4 Ng4 16.h3–/+) 15...g5–+ 16.Ne2 (16.Nd5 cd5 17.Bg4 Bg4 18.f3 Bh3 19.Kg1 Bf1 20.Qf1–+) 16...Qh3!! 17.Kh3 (17.Kh3 Ne3 Mate attack) 17...Ne3 18.g4 Bg4 19.Kg3 Nh5# 0–1. Grabcheva,Natalia – Moser,Nicolas (1635), Mureck AUT, EU Ch U11, 2013.

6.d4 Be7 7.Nf3 (7.de5 Ne5 8.f4=) 7...Bf6 (7...e4!? 8.Ne5 Ngf6=) 8.c4+= ed4 (8...Ne7 9.Nc3=) 9.Bd4 dc4 10.Bc4 Bd4 (10...Nb6 11.Be2+=) 11.Qd4 Qd4 12.Nd4 Ne5 13.Nd2 Ne7 14.0–0 (14.Rc1 c5 15.bc6 bc6+/–) 14...0–0 (14...c5 15.N4f3 Nf3 16.Nf3+=) 15.Rac1 Bd7 (15...c5 16.N4f3 Nf3 17.Nf3+/–) 16.N2f3 (16.Be2 c6+/–) 16...Nf3 17.Nf3 Rfd8 (17...c6 18.Ne5 Bf5 19.g4+/–) 18.Ne5 Be8 19.Rfd1 a4 (19...Kf8 20.Bd3+=) 20.Kf1+/– Nf5 21.Rd8 (21.Be2 f6 22.Nf3 c6+=) 21...Rd8+= 22.Ke2 (22.Be2 f6 23.Nf3 c6+=) 22...Nd6 23.Rd1 (23.Ke1!?+=) 23...Kf8= 24.b6 cb6 25.Bd3 (25.Rd4 Nc4 26.Nc4 Rd4 27.ed4 b5+=) 25...f6 (25...Nb5 26.Bb5 Bb5 27.Ke1 Rd1 28.Kd1–/+) 26.Nf3 (26.Nc4 Nc4 27.Bc4 Rd1 28.Kd1 Bc6+=) 26...Nb5 27.Bb5 (27.Ra1 Rd6+=) 27...Bb5 28.Ke1 Rd1 29.Kd1 Bc6 30.Ne1 (30.Kd2 g5+=) 30...Be4 (30...b5 31.f3+=) 31.Kd2 Ke7 32.Kc3 Kd6 33.Kd4 Bg6 34.e4 Bf7 35.Nd3 b5 (35...g5 36.f4+=) 36.Nb4 (36.f4 b6=) 36...Bc4 37.f4 (37.f3 h6=) 37...g5 38.g3 (38.fg5 fg5 39.Nc2 h5+=) 38...b6 (38...g4 39.Nc2+=) 39.Nc2 (39.h4 g4=) 39...Bb3 40.Nb4 Bc4 41.Na6 (41.Nc2 h5=) 41...Ba2 (41...g4 42.Nb4+=) 42.Nb4= Bc4 43.Nc2 Bb3 44.Nb4 Bc4 (44...g4 45.Nd3=) 45.Nc2 (45.h3 h5=) 45...Bb3 (45...h5 46.h4 g4 47.Nb4=) 46.Nb4= ½–½. Ramos Moreno,F J (2125) – Herrera Delgado,A (2300), Liga Andaluza, 2011.

6.d4 Ngf6 7.c4 =.

6.Nf3 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 a5 6.b5).

5.b5 Be6

6.d4 Nd7 7.Nd2 (7.de5 Ne5 8.Nf3 Nf3 9.Qf3 Nh6=) 7...c5 (7...e4 8.c4=) 8.bc6 (8.de5 Ne5 9.Ngf3 Nf3 10.Nf3 Qb6+=) 8...bc6= 9.c4 (9.de5 Ne5 10.Ngf3 Nf3 11.Nf3 Bg4=) 9...e4 (9...Rb8 10.Bc3=) 10.c5 Qc7 11.Ne2 f5 (11...Ngf6 12.Nf4=) 12.Nf4 (12.Rb1 Ngf6+=) 12...Bf7 13.h4 (13.Rb1 Rb8+=) 13...Ngf6= 14.Be2 Be7 15.Rb1 0–0 (15...Rb8 16.Nf1=) 16.a4 (16.Nf1 Ng4=) 16...Rfb8 (16...Rab8 17.Nf1=) 17.0–0 (17.Nf1 Rb7=) 17...Nf8 (17...Rb7 18.Bc3=) 18.Bc3 Ne6 19.Ne6 Be6 20.Nb3 (20.Rb8 Qb8 21.Qb1 Qc8=) 20...Ng4 21.Bg4 fg4 22.Ba5 Qd7 23.g3 Rf8 24.Kg2 Rf3 25.Bb6= Raf8 26.Nd2 g5 27.hg5+/– Bg5 28.Qe2 Qf7 29.a5 Bc8 30.Rb3 Ba6?? 31.Qa6+– Qh5 32.Bc7 Qh3 33.Kg1 R3f6 34.Rb8 Rh6 35.Rf8 Kf8 36.Qc8 Kf7 37.Qd7 Be7 38.Qf5 Bf6 39.Qd7= ½–½. Szymanski,Marcin – Dulinski,Jacek, Kielce, 1993.

6.d4 e4 7.c4 =.

6.Nf3 Nd7 7.Be2 =.

6.Nf3 f6 7.d4 e4 8.Nfd2 f5 9.c4 dc4 10.Nc4 Qd8 11.Nc3 Nf6 12.f3 (12.Be2 Be7+=) 12...Be7 (12...Nd5 13.fe4 Qh4 14.Kd2 fe4 15.Qe1 Qe1 16.Ke1 Nc3 17.Bc3=) 13.g4 0–0 14.gf5 Bf5 15.Ne5 Nbd7? (better is 15...Kh8!?+=) 16.Bc4+/– Kh8 17.Nf7 Rf7 18.Bf7 Bd6 19.Bb3 Qe7 20.Bc2 Nb6 21.Bc1 Nbd5 Black gets in control 22.Nd5 Nd5 23.Qd2 Rf8 (23...Bf4 24.Qf2 Be3 25.Be3 ef3 26.0–0 Bc2 27.Bd2–/+) 24.Bb3 (24.Rf1 Bh3 25.Be4 Bf1 26.Bd5 Bb5 27.Qg2+=) 24...Be6+= 25.f4 (better is 25.Bd5 Qh4 26.Qf2 Qf2 27.Kf2 Rf3 28.Kg1 Bd5 29.a4=) 25...Nf4–+ Threatening mate: Qh4. 26.Be6? (26.ef4 Qh4) 26...Nd3 27.Qd3 ed3 28.Bc4 Qh4 29.Kd2 Rf2 30.Kd3 Qg4 Do you see the mate threat? (worse is 30...Bh2 31.Ra2–/+) 31.Kc3? Qg2 32.Rd1 Rc2 33.Kb3 Rc4! 34.Rd2 Qd5 35.Kb2 Qb5 36.Ka2 Qd5 37.Kb2 a4 38.Rb1 b5 39.Rf2 h6 40.Ka1 Qe4 41.Bd2 Qd3 42.Bc1 Ba3 43.Rd2 Qc3 (43...Qc3 44.Rdb2 Qe1–+; 43...Rc1?! 44.Rd3 Rb1 45.Kb1+=; 43...Bc1?! 44.Rd3 b4 45.d5–+; 43...Qe3 44.Ba3 Qa3 45.Ra2 Qc3 46.Rab2 a3 47.Ka2 ab2 48.Rb2 Ra4 49.Kb1 Qd3 50.Rc2 Qd1 51.Kb2 Qa1 52.Kb3 Qa3#) 0–1. Vokac,Marek (2525) – Kolybin,Alexei V (2360), Ceske Budejovice op, 1998.

5.b5 Nf6

6.a4 Nbd7 A) 7.Nc3 Nc5 (7...e4 8.Nge2 Be7 9.Nd4 Nc5 10.Be2 Bd7 11.f4 ef3) 8.Nf3 e4 9.Nd4 Be7 10.Be2 Bd7 11.f4 ef3; B) 7.Be2 Be7 (7...e4 8.Nc3 Be7 9.Nh3 Nc5 10.Nf4 0–0 11.Ba3 Bf5) 8.Nf3 0–0 9.Ba3 Qe6 10.Ng5 Qf5 11.Be7 Qg5; C) 7.Nf3 b6 (7...Be7 8.Nc3 e4 9.Nd4 Nc5 10.Be2 Bd7 11.f4 ef3) 8.Nc3 Be7 9.Ba3 Nc5 10.Ne5 Qe5 11.d4 Qe6.

6.a4 Be6 A) 7.Be2 Nbd7 (7...Ne4 8.Nf3 Nd7 9.Nc3 Be7 10.d3 Nc3 11.Bc3 0–0) 8.Nf3 Be7 9.Ba3 Qb6 10.Be7 Ke7 11.0–0 Rhe8; B) 7.Nc3 Nbd7 (7...d4 8.ed4 ed4 9.Nce2 d3 10.cd3 Be7 11.Nf3 Nbd7) 8.Nf3 Nc5 9.Ne2 e4 10.Nfd4 Be7 11.Nf4 Bd7; C) 7.Nf3 Nbd7 (7...e4 8.Nd4 Nbd7 9.Nc3 Be7 10.Be2 0–0 11.0–0 Ne5) 8.Nc3 Nc5 9.Ba3 d4 10.ed4 ed4 11.Ne2 0–0–0.

6.a4 Be7 A) 7.Nc3 d4 (7...Nbd7 8.Nf3 e4 9.Nd4 Nc5 10.Be2 Bd7 11.f4 ef3) 8.Nce2 c5 9.Ng3 0–0 10.Bd3 Be6 11.Nf3 Nbd7; B) 7.Ba3 Qd8 (7...Qe6 8.Nf3 Nbd7 9.Ng5 Qf5 10.Be7 Qg5 11.Ba3 b6) 8.Nf3 Nbd7 9.Be2 0–0 10.Bb2 e4 11.Nd4 Ne5; C) 7.Nf3 Nbd7 (7...Bg4 8.Ba3 Qe6 9.Be7 Ke7 10.h3 Bf3 11.Qf3 Nbd7) 8.Nc3 e4 9.Nd4 Nc5 10.Be2 Bd7 11.f4 ef3.

6.a4 Bf5 A) 7.Nf3 Nbd7 (7...e4 8.Nd4 Be6 9.Ba3 Qb6 10.Bf8 Rf8 11.Nc3 Nbd7) 8.Nc3 g6 9.g3 Be7 10.Ba3 Nc5 11.Ne5 Qe5; B) 7.Nc3 Nbd7 (7...d4 8.Nce2 de3 9.fe3 Nbd7 10.Ng3 Bg6 11.Nf3 Be7) 8.Nf3 d4 9.Ne2 de3 10.fe3 Bg4 11.h3 Bf3; C) 7.Be2 Nbd7 (7...Be7 8.Nf3 Nbd7 9.0–0 Ne4 10.d3 Ng5 11.Ng5 Bg5) 8.Nf3 Be7 9.0–0 0–0 10.Ba3 Nc5 11.d4 ed4.

6.Nc3 Nbd7 A) 7.Be2 Nc5 (7...Be7 8.Nf3 0–0 9.0–0 h6 10.Rb1 b6 11.h3 Bb7) 8.d4 ed4 9.ed4 Nce4 10.Nf3 Nc3 11.Bc3 Ne4; B) 7.Nge2 Be7 (7...Nb6 8.Ng3 Be7 9.f3 0–0 10.Bd3 Nc4 11.Bc4 dc4) 8.Ng3 Nc5 9.d4 ed4 10.ed4 Nce4 11.Bd3 Ng3; C) 7.Nf3 Nc5 (7...Be7 8.a4 e4 9.Nd4 Nc5 10.Be2 Bd7 11.0–0 0–0) 8.a4 e4 9.Nd4 Be7 10.Be2 0–0 11.0–0 Bd7.

6.Nc3 Be7 A) 7.a4 d4 (7...Nbd7 8.Nf3 e4 9.Nd4 Nc5 10.Be2 Bd7 11.0–0 0–0) 8.Nce2 0–0 9.Nf3 Re8 10.ed4 ed4 11.Ned4 c5; B) 7.Be2 0–0 (7...Nbd7 8.Nf3 0–0 9.0–0 h6 10.Rb1 b6 11.d3 Bb7) 8.Nf3 Bf5 9.0–0 Nbd7 10.h3 h6 11.Re1 Rfe8; C) 7.Nf3 Nbd7 (7...0–0 8.a4 c5 9.bc6 Nc6 10.Nb5 Qb8 11.Be2 Ne4) 8.a4 e4 9.Nd4 Nc5 10.Be2 Bd7 11.0–0 0–0.

6.Nc3 Bf5 A) 7.Bd3 e4 (7...Bd3 8.cd3 Nbd7 9.Qc2 Qc5 10.Qb3 Be7 11.Nf3 0–0) 8.Bf1 Be7 9.Nge2 0–0 10.Nd4 Be6 11.Ne6 Qe6; B) 7.Nf3 Nbd7 (7...Be7 8.a4 0–0 9.Ba3 Qe6 10.Be7 Qe7 11.Bd3 Bg4) 8.h3 Be7 9.Be2 0–0 10.0–0 h6 11.Re1 Rfe8; C) 7.Nge2 Be6 (7...Nbd7 8.Ng3 Bg6 9.Bd3 Nc5 10.Bg6 hg6 11.0–0 Be7) 8.Ng3 Be7 9.Be2 Nbd7 10.0–0 0–0 11.f4 d4.

6.Nc3 g6 A) 7.a4 Bf5 (7...Nbd7 8.Nf3 e4 9.Nd4 Bg7 10.Be2 Nc5 11.0–0 0–0) 8.Nge2 Nbd7 9.Ng3 Be6 10.Be2 h5 11.h4 0–0–0; B) 7.Be2 Nbd7 (7...Bg7 8.Nf3 Nbd7 9.0–0 0–0 10.d3 Rd8 11.h3 d4) 8.Nf3 Bg7 9.0–0 0–0 10.d4 Re8 11.Na4 ed4; C) 7.Nf3 Nbd7 (7...Bf5 8.Be2 Nbd7 9.0–0 Bg7 10.Nh4 Be6 11.f4 d4) 8.a4 e4 9.Nd4 Bg7 10.Be2 Nc5 11.h4 h5.

6.c4 Nbd7 A) 7.d4 c5 (7...Be7 8.Nf3 ed4 9.Bd4 0–0 10.Nc3 Rd8 11.cd5 Nd5) 8.bc6 bc6 9.cd5 Rb8 10.Qc2 cd5 11.Nd2 e4; B) 7.Qc2 dc4 (7...Nc5 8.Nf3 e4 9.Nd4 dc4 10.Bc4 Be7 11.Nc3 0–0) 8.Bc4 Nb6 9.Ba2 Nbd5 10.Nf3 Qc5 11.Qc5 Bc5; C) 7.cd5 Nd5 (7...Be7 8.Nc3 0–0 9.Nf3 Nc5 10.Ne5 Qe5 11.d4 Qg5) 8.Nc3 Be7 9.Qc2 N5f6 10.Nf3 0–0 11.Rc1 Re8.

6.c4 Be7 A) 7.Nf3 Nbd7 (7...e4 8.Nd4 0–0 9.Nc3 c5 10.bc6 Nc6 11.Ncb5 Qc5) 8.cd5 e4 9.Nd4 Nc5 10.Nc3 Nd5 11.Bc4 Nb6; B) 7.Nc3 d4 (7...Bg4 8.Nf3 d4 9.Na4 Nbd7 10.h3 Bf3 11.Qf3 e4) 8.Na4 0–0 9.Nf3 Re8 10.c5 Qe6 11.Qc2 Qf5; C) 7.cd5 0–0 (7...Bf5 8.Nc3 Nbd7 9.Nf3 Nd5 10.Nd5 Qd5 11.Rc1 Qd6) 8.Qc2 Nbd7 9.Nc3 Nc5 10.Nf3 e4 11.Nd4 Bd7.

6.c4 Bf5 A) 7.Nf3 Nbd7 (7...e4 8.Nd4 Bg6 9.Nc3 Nbd7 10.h4 h5 11.cd5 Nd5) 8.cd5 Nd5 9.Nc3 Be7 10.Nd5 Qd5 11.Rc1 Qd6; B) 7.a4 Nbd7 (7...Be7 8.cd5 Nd5 9.Nf3 Nd7 10.Na3 Qe6 11.Nc4 0–0) 8.Nf3 Be7 9.Nc3 0–0 10.cd5 Nd5 11.Nd5 Qd5; C) 7.cd5 Nbd7 (7...Nd5 8.d3 Nb6 9.Nf3 N8d7 10.Nc3 Be7 11.Rc1 Rc8) 8.Nc3 Be7 9.d4 0–0 10.Nf3 e4 11.Nd2 Nb6.

6.d4 e4 7.c4 =.

6.Be2 Nbd7 A) 7.d4 e4 (7...c5 8.bc6 bc6 9.Nc3 Be7 10.Nf3 e4 11.Nd2 0–0) 8.Nd2 Nb6 9.c4 dc4 10.Nc4 Nc4 11.Bc4 Be6; B) 7.a4 e4 (7...Be7 8.Nf3 0–0 9.0–0 h6 10.Ba3 Qe6 11.Be7 Qe7) 8.Nh3 Be7 9.Nc3 Nc5 10.Nf4 0–0 11.0–0 d4; C) 7.Nf3 Be7 (7...g6 8.0–0 Be7 9.d4 e4 10.Nfd2 Nb6 11.c4 dc4) 8.d4 e4 9.Ne5 Qe6 10.c4 Bd6 11.cd5 Nd5.

6.Be2 e4 A) 7.Nc3 Be7 (7...Nbd7 8.Nh3 Be7 9.0–0 0–0 10.Nf4 g5 11.Nh5 Nc5) 8.d3 ed3 9.cd3 0–0 10.Nf3 Nbd7 11.0–0 Nc5; B) 7.Nh3 Bh3 (7...Nbd7 8.Bd4 Ne5 9.Nc3 Be7 10.b6 c6 11.Nf4 0–0) 8.gh3 Be7 9.d3 ed3 10.cd3 0–0 11.Nd2 Nbd7; C) 7.f4 Be7 (7...Nbd7 8.Nh3 Be7 9.Bd4 Nc5 10.Be5 Qd8 11.Nc3 0–0) 8.Be5 Qb6 9.Nc3 Nbd7 10.Bd4 Bc5 11.Na4 Qd6.

6.Be2 Be6 A) 7.Nc3 Nbd7 (7...Be7 8.Nf3 Nbd7 9.0–0 0–0 10.Ng5 Nc5 11.Ne6 Ne6) 8.Nf3 Be7 9.0–0 0–0 10.Ng5 Nc5 11.Ne6 Ne6; B) 7.Nh3 Nbd7 (7...Be7 8.Ng5 Nbd7 9.0–0 0–0 10.Ne6 Qe6 11.Nc3 Bd6) 8.Ng5 Bf5 9.0–0 Be7 10.f4 e4 11.d3 h6; C) 7.Nf3 Nbd7 (7...e4 8.Ng5 Be7 9.Nc3 Nbd7 10.d3 ed3 11.cd3 0–0) 8.Nc3 Be7 9.Ng5 Bf5 10.0–0 h6 11.Nf3 0–0.

6.Be2 Be7 A) 7.Nc3 0–0 (7...Nbd7 8.Nf3 0–0 9.0–0 h6 10.Rb1 Nc5 11.Ne5 Qe5) 8.Nf3 Bf5 9.0–0 Nbd7 10.h3 h6 11.Re1 Rfe8; B) 7.a4 e4 (7...0–0 8.Nf3 e4 9.Nd4 c5 10.bc6 bc6 11.Nc3 Na6) 8.Nc3 0–0 9.Ba3 Qd8 10.Be7 Qe7 11.h4 Qd6; C) 7.Nf3 Nbd7 (7...e4 8.Nd4 0–0 9.Nc3 Be6 10.0–0 Nbd7 11.f4 ef3) 8.0–0 0–0 9.Nc3 h6 10.h3 Nc5 11.d4 ed4.

6.Nf3 Nbd7 7.Nc3 Be7 (7...Nc5 8.a4 e4 9.Nd4 Be7 10.Be2 0–0 11.0–0 Bd7) 8.a4 e4 9.Nd4 Nc5 10.Be2 Bd7 11.0–0 0–0.

6.Nf3 Nbd7 7.d4 e4 (7...ed4 8.Qd4 Be7 9.Nc3 0–0 10.Be2 Nc5 11.Rd1 Rd8) 8.Ne5 g6 9.Nd2 Be7 10.c4 0–0 11.cd5 Nb6.

6.Nf3 Nbd7 7.Be2 c5 8.d3 b6 9.h3 Qe6 10.Nbd2 Bb7 11.c4 Bd6 12.Rg1 (12.cd5 Nd5 13.Nc4 0–0=) 12...0–0–0 (12...0–0!?–/+) 13.Qc2 h6 14.0–0–0 Rhe8 15.e4 d4 16.Nh4 g6 17.g4 Nh7 18.Ng2 Ng5 19.Rh1 Qf6 20.f3 Rf8 21.Kb1 Qg7 22.Bc1 Kc7 23.a4 f5 (23...Kb8 24.Nb3–/+) 24.Rdf1 (24.ef5 gf5 25.Nh4 e4 26.de4 fe4 27.Ne4 Ne4 28.fe4 Rde8=) 24...Ne6 (24...f4 25.Nb3–/+) 25.Qd1? (25.ef5!? gf5 26.Nh4=) 25...Be7 26.Nb3 Rf7 27.Qe1 Rdf8 28.Bd2 Kb8 29.Kb2 Bg5 (29...fe4 30.fe4 Nf4 31.Rh2–+) 30.Kc2 (30.ef5 gf5 31.Nh4 fg4 32.hg4 Nf4–/+) 30...Nc7 (30...Bd2 31.Qd2 f4–+) 31.Qc1? (better is 31.ef5!? gf5 32.Nh4+=) 31...Bd2 32.Nd2 Ne8 (32...fe4 33.Ne4 Be4 34.de4–+) 33.Qe1 (33.gf5 gf5 34.Nh4 Nd6+=) 33...Nd6 (33...f4 34.Nh4–+) 34.Qg3 (34.gf5 gf5 35.Nh4 Qh7+=) 34...Kc7 35.Ne1 Qf6 36.h4 White prepares the advance g5 36...Qe7 37.g5 Rh8 38.Rfg1 Rfh7 39.Kd1 Kd8 40.Qg2 Nf8 41.Rh2 hg5 42.Qg5 Qg5 43.Rg5 Rh4 44.Rh4 Rh4 0–1. Rongen,Jos (1690) – Peredy,F (2200), Brasschaat Open, 2015.

6.Nf3 Nbd7 7.Be2 Be7 8.d4 e4 9.Ne5 Qe6 10.0–0 0–0 11.c4 Bd6.

6.Nf3 Nbd7 7.Be2 g6 8.0–0 Bg7 9.d4 e4 10.Nfd2 Nb6 11.c4 dc4.

6.Nf3 Nfd7 A) 7.Nc3 Be7 (7...Nf6 8.Be2 Nbd7 9.0–0 Be7 10.a4 e4 11.Nd4 Nc5) 8.a4 0–0 9.Be2 d4 10.Ba3 Nc5 11.Ne4 Qd5; B) 7.Be2 Be7 (7...c5 8.Nc3 e4 9.Nh4 d4 10.Na4 Nb6 11.Nb6 Qb6) 8.c4 dc4 9.Qc2 c6 10.Qc4 0–0 11.Nc3 Nb6; C) 7.c4 e4 (7...Be7 8.cd5 0–0 9.Qc2 f5 10.Nc3 e4 11.Nd4 Nc5) 8.Nd4 dc4 9.Nc3 Qg6 10.Qc2 Nf6 11.Nce2 Bd6.

6.Nf3 e4 A) 7.Ng5 h6 (7...Nbd7 8.Nc3 h6 9.Nh3 Be7 10.d3 ed3 11.Bd3 0–0) 8.Nh3 Be7 9.Nc3 0–0 10.Nf4 Nbd7 11.d3 g5; B) 7.Ne5 Be7 (7...Nbd7 8.d4 ed3 9.Nd3 Be7 10.Be2 Nc5 11.0–0 Nd3) 8.Be2 Nbd7 9.Nd7 Bd7 10.Nc3 0–0 11.a4 Qe5; C) 7.Nd4 Be7 (7...c5 8.bc6 Nc6 9.Nb5 Qd8 10.Bf6 gf6 11.N1c3 Be6) 8.Nc3 0–0 9.Be2 Be6 10.0–0 Nbd7 11.f4 ef3.

6.Nf3 Bg4 A) 7.Nc3 Nbd7 (7...e4 8.h3 Bf3 9.gf3 ef3 10.Qf3 Nbd7 11.d4 Be7) 8.h3 Bf3 9.Qf3 e4 10.Qf5 Be7 11.Be2 0–0; B) 7.Be2 Nbd7 (7...Bf3 8.Bf3 e4 9.Be2 Be7 10.Nc3 Nbd7 11.d3 ed3) 8.Nc3 Be7 9.0–0 0–0 10.h3 Bf5 11.Nh4 Be6; C) 7.h3 Bf3 8.Qf3 Nbd7 9.Nc3 Nc5 10.d4 ed4 11.ed4 Ne6.

6.h3 Be7+= 7.Nf3 e4 8.Nd4 0–0 9.d3 c5 10.bc6 bc6 11.de4 de4 12.Bc4 Qc5 13.Qe2 Qg5 14.Qf1 Ba6 (14...c5 15.Nb3+=) 15.Ba6 (15.Nc6 Nc6 16.Ba6 Rfb8–/+) 15...Ra6+= (worse is 15...Na6 16.Nc6 Qc5 17.Ne7 Qe7 18.Bd4+=) 16.Nd2 c5 17.Ne2 Rd8 (17...Nbd7 18.Ng3 Re6 19.h4+=) 18.Ng3= Qd5 (18...Bd6 19.Nde4 Ne4 20.Ne4+=) 19.Qe2 (better is 19.Rd1+=) 19...Bd6?? (better is 19...Rb6 20.Bc3 Nc6=) 20.Bf6+– gf6 21.Qg4 Kf8 22.Nge4?? (better is 22.Nf5 Ke8 23.Rd1+–) 22...f5= 23.Qg8 (23.Qh4!? Bc7 24.Qh7+=) 23...Kg8–/+ 24.Nf6 Kf8 25.Nd5 Be5 26.Rb1 (26.0–0–0!? Rd5 27.Nc4 Rd1 28.Rd1–/+) 26...Rd5–+ 27.Nc4 Bc3 (27...Nc6 28.g3–+) 28.Ke2–/+ Nc6 (28...Nd7 29.Rb3 Bg7 30.Rb7–/+) 29.Rb3 Bf6 30.Nb6 Rd6 31.Nc4 (31.Rd1 Rd1 32.Kd1 Ra7–/+) 31...Re6–+ 32.Kf3 Ne5 33.Ne5–/+ Be5 34.Rhb1 h5 35.Rb5 Rec6 36.a4 Kg7 37.Ke2 Bc7 38.Rd1 Kg6 39.Rd7 Ra7 40.Rd5 Bd6 41.Rb1 Re7 42.Rb5 Ra6 43.Rb1 Re4 44.Rbd1 Be7 45.Ra1 Rb6 46.Rd7 Kf6 47.Ra7 Rb2 48.Kd3? c4 49.Kc3 Rb6 50.Kd2 Rd6 51.Kc1? Rd5 52.c3 f4 53.Ra6 Kg7 54.Rb1 fe3 55.fe3 Ba3 56.Kc2 Re3 (56...Re3 57.Rg1 Re2 58.Kb1 Rdd2–+) 0–1. Grabcheva,Natalia – Do Quoc,Khanh (1625), Mureck AUT, EU Ch U11, 2013.

6.Nh3 Nbd7 A) 7.d4 Be7 (7...c5 8.bc6 bc6 9.Nc3 Be7 10.Be2 0–0 11.0–0 h6) 8.Nc3 0–0 9.Be2 c5 10.bc6 bc6 11.0–0 h6; B) 7.Be2 Be7 (7...h6 8.Nc3 Be7 9.0–0 0–0 10.d4 c5 11.bc6 bc6) 8.d4 0–0 9.Nc3 c5 10.bc6 bc6 11.Rb1 Ba6; C) 7.Nc3 Nc5 (7...Be7 8.d4 0–0 9.Be2 h6 10.0–0 c5 11.bc6 bc6) 8.d4 ed4 9.Qd4 Bh3 10.gh3 Ne6 11.Qd2 0–0–0.

6.Nh3 Be7 A) 7.Ng5 0–0 (7...h6 8.Nf3 Nbd7 9.Be2 0–0 10.0–0 e4 11.Nd4 Ne5) 8.Nc3 Nbd7 9.Be2 h6 10.Nf3 Nc5 11.d4 ed4; B) 7.Be2 0–0 (7...Bh3 8.gh3 0–0 9.Nc3 Nbd7 10.0–0 d4 11.Na4 Ne4) 8.Nc3 Bh3 9.gh3 Nbd7 10.Rg1 Nc5 11.d4 ed4; C) 7.Nc3 0–0 (7...Nbd7 8.d4 0–0 9.Be2 b6 10.0–0 Rd8 11.a4 ed4) 8.d4 ed4 9.Qd4 Bh3 10.gh3 c5 11.Qf4 Qf4.

6.Nh3 Bf5 A) 7.Bd3 e4 (7...Bd3 8.cd3 Nbd7 9.0–0 Nc5 10.Qe2 Be7 11.f4 e4) 8.Be2 Nbd7 9.g4 Be6 10.Nf4 h6 11.Nc3 Ne5; B) 7.Be2 Be7 (7...Nbd7 8.g4 Bg6 9.Nc3 Be7 10.d4 0–0–0 11.0–0 h5) 8.g4 Be6 9.Ng5 0–0 10.Ne6 fe6 11.0–0 Nbd7; C) 7.Nc3 Nbd7 (7...Be7 8.Bd3 e4 9.Be2 Bh3 10.gh3 Nbd7 11.d3 ed3) 8.Bd3 e4 9.Be2 Bh3 10.gh3 Qe6 11.Bg4 Ng4.

6.Nh3 g6 A) 7.Nc3 Bg7 (7...Bh6 8.f4 0–0 9.fe5 Qe5 10.Qf3 Bf5 11.Bd3 Bd3) 8.Ng5 0–0 9.Be2 h6 10.Nf3 Nbd7 11.0–0 Re8; B) 7.d4 Nbd7 (7...ed4 8.Qd4 Bg7 9.Qf4 0–0 10.Qd6 cd6 11.Be2 Nbd7) 8.c4 Bg7 9.Nc3 dc4 10.Bc4 Nb6 11.de5 Qd1; C) 7.f4 Nbd7 (7...ef4 8.Nf4 Nbd7 9.Nc3 d4 10.Na4 Bh6 11.g3 c5) 8.Bd3 e4 9.Be2 Bg7 10.0–0 0–0 11.Qe1 Re8.

6.c4 Bg4

7.Qc2 d4 8.Bd3 de3 9.fe3 Nbd7 10.Nf3 Nc5 11.Ne5 Nfd7.

7.Qc2 Nbd7 8.cd5 Nd5 9.Nf3 Be7 10.Nc3 Nc3 11.Bc3 Qd5.

7.Be2 Be2 8.Qe2 Nbd7 9.d4 dc4 10.Nf3 ed4 11.Bd4= c5.

7.Be2 Be2 8.Qe2 Nbd7 9.d4 dc4 10.Nf3 e4 11.Ne5 Nb6 (11...Be7 12.Nc4 Qe6 13.Nc3=) 12.Nd2 Qe6 (12...Qd5 13.Ndc4 Nc4 14.Qc4=) 13.0–0 Bd6 14.Nec4 Nc4 15.Nc4 0–0 16.Rfc1 (16.Rac1 Nd5=) 16...Be7 17.a4 Nd5 18.Ba3 Bb4 19.Qb2 Rfc8 20.Bb4 ab4 21.Nd2 c6 (21...Rd8 22.Nb3 Qg6 23.Nc5=) 22.b6 (22.bc6 Rc6 23.Rc6 Qc6 24.Ne4 Ne3 25.fe3 Qe4=) 22...Qe7 (worse is 22...Nb6 23.Qb4 Nd5 24.Qb7+/–) 23.Rc5 White plans a5 23...Ra6 24.a5 g6 (24...Re8 25.Qc2=) 25.Nb3 (25.Qc2 Re8+=) 25...Rca8= 26.Rac1 Kg7 (26...f5 27.Rd5 cd5 28.Rc7=) 27.Qd2 (27.R5c4 h6=) 27...Qd6 (27...Nc3 28.Rc4=) 28.R1c4 (28.Qe2 Nc3 29.Qc2 Qe7=) 28...Rd8 (28...f5 29.Rc1=) 29.Rb4 (29.Qe2 f5=) 29...Nb4+= 30.Qb4 Qe7 31.h3 Rd5 32.Kf1 (32.Qd2 Ra8=) 32...Ra8 33.Qa4 Qd6 34.Ke2 (34.Kg1 f5=) 34...Kf8 (34...Rd8 35.Rd5 cd5 36.Nc5=) 35.Rd5 cd5 36.Nc5 Ke7 37.Qb5 Rb8 38.Kd2 f5 39.Kc3 (39.Ke1 Kf7=) 39...g5 40.Kb4 1–0. Kural,Aziz Serhat (2345) – Liebert,Ervin (2395), EU/TC10/sf2, 2014.

7.Be2 Be2 8.Qe2 Nbd7 9.d4 ed4 10.ed4= Be7 11.c5 (11.Nf3 0–0) 11...Qe6 12.Qe6 fe6 13.Nf3 c6 14.Nc3 e5 15.Ne5 (15.de5 Nh5=) 15...Ne5 16.de5 Nd7 17.bc6 bc6 18.Na4 Rf8 (18...Bc5? 19.e6 (19.Nc5?! Nc5 20.Ke2 Rb8=) 19...Ba7 20.ed7 Kd7 21.0–0+–) 19.Bd4 Rf4 20.0–0–0 Rb8 21.Kc2 Nf8 22.g3 Rf3 23.Be3 Ne6 (23...Nd7 24.Rhe1=) 24.Kd3 (24.Rhf1 Kf7=) 24...g5+= 25.Rb1 Rb1 26.Rb1 g4 27.Ke2 d4 28.Bc1 Nc5 (28...Rf5 29.Kd3+=) 29.Nc5 Bc5 30.Rb7 Ba3 31.Ba3 Ra3 32.Rh7 a4 33.Rg7 c5 34.Rg4 Kf7 35.h4 Ra2 36.Kf3 Ra1 37.h5? (better is 37.Rf4 Ke6 38.Ke4=) 37...d3–+ 38.Ke3 a3 0–1. Hoch,Hubertus (2315) – Boehme,Sebastian (2560), RSL2T – 2er/2010, 2010.

7.Be2 Be2 8.Qe2 Nbd7 9.cd5 Nd5 10.Nc3 Nc5 11.d4 Nc3.

7.Be2 Bf5 8.Nf3 Nbd7 9.cd5 Nd5 10.d3 N5f6 11.Nbd2 Bd3.

7.f3 Bd7 8.cd5 Nd5 9.Nc3 Be7 10.Qc2 Nc3 11.Bc3 Be6.

7.f3 Be6 8.cd5 Nd5 9.Ne2 Nd7 10.Nbc3 Nc5 11.Ng3 Nc3.

7.Nf3 Nbd7 (7...e4 8.h3 Be6 9.cd5 Bd5 10.Nd4 c5 11.bc6 Nc6) 8.Nc3 e4 9.h3 Bf3 10.gf3 Ne5 11.fe4 de4.

5.c4 ab4

6.c5 Qc5? 7.ab4 Qb4 8.Ra8 Qb2 9.Rb8 +–.

6.c5 Qe7 7.ab4 Ra1 8.Ba1 Nf6 9.Nf3 e4 10.Ne5 Nbd7 11.Nd7 Bd7 12.Qb3 c6 13.Be2 Qe6 =.

6.c5 Qg6 7.ab4 Ra1 8.Ba1 Nc6 9.b5 Nb4 10.Be5 d4 11.Na3 Bc5 12.Nf3 de3 13.de3 Nf6 =.

6.c5 Qg6 7.Be5 Bc5 8.Ne2 (8.Bc7 ba3 9.Na3 Nc6= 10.Nb5 Ra1 11.Qa1 Nge7 12.Qc1 Bb4 13.Ne2 Qf6=) 8...Bd6 (8...ba3 9.Qb3 c6 10.Nf4–/+ (10.d4 Nd7 11.Nf4 Qg5 12.Bc7 Be7 13.Na3 Ngf6–/+) 10...Qg5 11.d4 Nd7 12.Bc7 Be7 13.Na3 Ngf6–/+) 9.Nf4+= Qh6 10.ab4 Ra1 11.Ba1 Bf4 (11...c6 12.Nh5 (12.Nd3 Ne7 13.Bd4 0–0+=) 12...f6 13.b5+= Ne7+=) 12.ef4= Ne7 (12...Qg6 13.Be5 Qe4=) 13.g3 (13.Be5!? Kd8 14.Qf3+=) 13...0–0–/+ 14.Bg2 Nec6 15.0–0 Nb4 16.Na3 (16.Qb3 N8a6–/+) 16...c6 17.Qb3 N8a6 (17...N4a6 18.Re1–/+) 18.Bc3 Nd3 (18...Qd6 19.Rb1 c5 20.d4–/+) 19.Bg7+= Qg7 20.Qd3 Nb4 21.Qb3 Qd4 22.Nc2 Nc2 23.Qc2 Re8 24.Bf3 Bh3 25.Rb1 Re6 26.Qd1 b5 27.d3 Re8 (27...Qa4 28.Qc1+=) 28.Bg4 Bg4 29.Qg4 Kf8 30.Qd7 Qd3–/+ ½–½. Buczinski,Henryk – Sorochan,Dmitry Vladimirovic, corr Alpert Mem.Cup/23, 2010.

4.e3 c6

5.Be2 Nd7 6.Nf3 =.

5.Be2 Be7 6.d3 (6.Nf3 Nd7=) 6...Bf6 (6...Nd7 7.Nf3=) 7.Nd2 Nd7 (7...Ne7 8.Ngf3=) 8.Ngf3 Nf8 (8...Ne7 9.c4=) 9.Rb1 (9.c4 Bg4+=) 9...Ne6 (9...Ne7 10.c4=) 10.0–0 Ne7 11.h3 (11.c4 0–0=) 11...0–0 12.e4 (12.c4 Ng6=) 12...Kh8 (12...b6 13.ed5 cd5 14.c4=) 13.ed5 (13.c4 Nf4=) 13...cd5 (< 13...Qd5 14.c4 Qd8 15.Ne5+/–) 14.Nb3 (14.c4 Nf4=) 14...Nf4=+ 15.Re1 (15.Bc1=+) 15...g5 (better is 15...e4!? 16.Nfd4 Bd4 17.Bd4 Qg6–/+ (< 17...Ne2 18.Qe2 Qg6 19.de4+=)) 16.Bf1= Increases the pressure on e5 16...Neg6 17.Nh2 (better is 17.d4 e4 18.Ne5=) 17...h5 (17...d4 18.Nc5=) 18.Bc1 (better is 18.g3!? Bh3 19.gf4 Nf4 20.d4 ed4 21.Bd4 Bf1 22.Nf1+–) 18...Kg7= 19.Bf4 (19.d4 e4=) 19...Nf4 20.Nd2 (20.d4 e4=) 20...Bf5=+ 21.Ndf3 Rh8 22.Rb3 Rh6 23.g4? hg4–+ 24.hg4 Bg6 25.Bg2 Rah8 26.a4? Ng2 27.Kg2 e4 28.de4 Rh2 29.Nh2 Qh2 30.Kf1 Qh1 31.Ke2 Qe4 32.Re3 Qg4 33.Kd2 Qb4 34.c3 Qb2 (35.Qc2 Qc2#) 0–1. mic (2270) – diggitus (2345), net–chess.com, 2006.

5.Ne2 Nf6+= 6.g3 (6.d4 e4+=) 6...Bg4 7.Bg2 Be7 (7...a5 8.f3 Be6 9.0–0+=) 8.0–0 0–0 9.f3 Bf5 10.d3 c5 (10...Nbd7 11.f4 e4 12.h3=) 11.e4= Be6 12.Kh1 (12.f4!? Nc6 13.ed5 Nd5 14.fe5 Ne5 15.bc5 Qc5 16.Bd4=) 12...cb4–/+ 13.ab4 d4 (13...Nc6!?–/+) 14.f4= ef4 (14...Nc6 15.b5 Qb4 16.bc6 Qb2 17.Nd2 bc6 18.Rb1=) 15.Nf4 (15.Bd4 Qb4 16.e5 f3 17.Bf3 Ng4+–) 15...Bg4 (15...Nc6 16.c3=) 16.Qd2 (16.Qe1 A) 16...Qb4? 17.Qb4 Bb4 18.e5+– (18.Bd4?! Nfd7+/–); B) 16...Qe5+=) 16...Nc6 17.b5 Ne5 (17...Nb4 18.Ra4 a5 19.ba6 Na6 20.h3+/–) 18.Qf2 Rfd8 19.Nd2 (19.h3 Bc8+/–) 19...Be6+= 20.Ne2 The pressure on the isolated pawn grows (20.Ra4 Qc5 21.Rd4 Qb5 22.Ne6 Rdc8+/–) 20...Nfg4 (20...Qb4 21.Ba3 (21.Bd4? Qd2 22.Nf4 Qf2 23.Bf2 a5–+) 21...Qd2 22.Be7=) 21.Qg1 (better is 21.Qd4!? Qc7 22.Qc3+=) 21...Ne3 (21...Bg5 22.Qd4 Bd2 23.Qd6 Rd6 24.h3–/+) 22.Rfc1 Bg4 (better is 22...Ng2!? 23.Qd4 Bf6 24.Qd6 Rd6+=) 23.Nd4+= Ng2 24.Qg2 Qb6 (24...Qd7 25.N2b3+=) 25.N4b3 Bg5?? (better is 25...Bf6+=) 26.Be5+– Qb5 27.Ra5 Qb4 28.c3 Qe7 (28...Qb6 29.Bd4 Qh6 30.Rca1+–) 29.d4 (29.Bf4 f5 30.Re5 Qf6+–) 29...b6 30.Rd5 (30.Ra6 Bc8 31.Ra2 f5+–) 30...Rd5 31.ed5 Qd7 32.Ne4?? (better is 32.c4+–) 32...Bc1 33.Nc1 Rd8 (33...f6 34.Bf4 Bh3 35.Qf3–/+) 34.Nf2 (34.c4 b5 35.Qf1 Qf5 36.Qf5 Bf5+/–) 34...Bf5 35.d6 (35.g4 Bg6+=) 35...f6 (35...Qb5 36.g4 Bd7 37.d5=) 36.Bf4+= g5 37.Bd2 (37.g4 Bg6 38.Bg3 Re8=) 37...Qd6 38.Ne4 (38.Ncd3 g4+=) 38...Be4 (38...Qc6 39.Nf2 Qg2 40.Kg2=) 39.Qe4 Qd5 40.Qd5 Rd5 41.Kg2 Kf7 42.Kf3 Ke6 (42...Rf5 43.Ke2=) 43.Nd3 a5 44.Nb2 (44.Be3 b5+=) 44...b5 45.Nd3 (45.Ke4 a4 46.c4 bc4 47.Na4 f5 48.Ke3 Rb5=) 45...h6 (45...a4!?=) 46.Nc5+= Ke7 (46...Kf5 47.g4 Kg6 48.Ke4+/–) 47.Ke4+/– Rd6 48.Kf5 (48.g4 Rc6+/–) 48...a4 (48...Rd5 49.Kg6+=) 49.Bc1+/– Rd5 50.Kg6 Rd8 (50...g4 51.Na6 (worse is 51.Kh6 Kf7+=; worse is 51.Bh6 a3 52.Nb3 a2+=) 51...Rd8 52.Ba3 Kd7 53.Nc5 Kc6 54.Ne4+/–) 51.Ba3+– (51.Kh6 Kf7 52.Kh5 Rh8 53.Kg4 Rh2+=) 51...Ke8 (51...Rg8 52.Kf5+– (52.Kh6?! Kf7 53.Kh5 Rh8 54.Kg4 Rh2=)) 52.Ne6 (52.Ne4 Kd7 53.Nf6 Ke6 54.d5 Ke5+–) 52...Rd7 (52...Rc8!? 53.Bb4 Kd7 54.Kf6 a3 55.Ba3 Rc3 56.Nf8 Ke8+/–) 53.Ng7 (53.Kh6?! Kf7 54.Nc5 Re7=) 53...Kd8 (53...Rg7 54.Kg7 f5 55.Bc1+– (55.Kh6?? f4–+)) 54.Kf6 (better is 54.Kh6 Re7+–) 54...Kc7? (54...Ra7 55.Ne6 Kd7 56.g4+–) 55.Ne6?? (better is 55.Nf5+–) 55...Kc6 56.Kg6 (56.Ke5 Rd5 57.Ke4 g4+–) 56...Kd5+/– 57.Nf8 (57.Nc5 Rd6 58.Kf5 Rd8+/–) 57...Ra7 (57...Rc7 58.Bb2 Rc6 59.Kh5 Kc4+=) 58.Kh6+/– Kc4 59.Ne6?? (59.Kg5 Kc3 60.Bc5 b4=) 59...Kc3?? (59...Ra6 60.Kg5 Re6 61.Kf5–+) 60.Kg5?? (better is 60.Bc5 Ra6 61.d5+=) 60...b4–+ 61.Bc1 a3 62.Ba3 (62.d5 b3 63.Be3–+) 62...ba3 63.h4 (63.d5 a2 64.Nf4 a1Q–+) 63...a2 64.h5 a1Q 65.h6 (65.Nf4 Kd4 66.Kh4 Ke4 67.Ne6 Qf6 68.Ng5 Kf5 69.g4 Kf4 70.Kh3 Qc3 71.Nf3 Qf3 72.Kh2 Ra2 73.Kg1 Qd1) 65...Qc1 66.Kg6 Qc2 (66...Qe3 67.Kf6 Qh6 68.Ke5 Qh5 69.Kd6 Ra6 70.Ke7 Qh7 71.Kf6 Qh6 72.Kf5 Qe6 73.Kf4 Qf7 74.Kg4 Rg6 75.Kh3 Qf1 76.Kh4 Qh1) 67.Kg5 Qh7 (67...Ra5 68.Kf4 Qf5 69.Ke3 Qd3 70.Kf4 Rf5 71.Kg4 Qf3 72.Kh4 Rh5) 68.g4 Ra6 69.Nf4 Qh6 70.Kf5 Rf6 71.Ke5 Qf4 72.Kd5 0–1. Bango,Dominik – Vrtiakova,Anna (1815), MSR Druzstiev Starsich Ziakov, 2014.

5.Nf3 e4 6.Nd4 (--> 4.Nf3 e4 5.Nd4 c6 6.e3).

5.c4 Be6

6.Nf3 e4 7.c5 Qe7 8.Nd4 =.

6.Nf3 f6 7.Qb3 Nd7 8.d4 e4 9.Nfd2 f5 10.Nc3 a6 11.b5 Ngf6 12.a4 ab5 13.ab5 (worse is 13.cb5 Kf7+=) 13...Ra1 14.Ba1 Be7 15.Be2 0–0 16.0–0 f4 (16...c5!?=) 17.c5+= Qc7 18.Nce4 fe3 (18...Ng4 19.h3 fe3 20.Bg4 Bg4 21.Qe3 de4 22.hg4+/–) 19.Nf6+/– Bf6 20.Qe3 Bf7 21.Bg4 (21.b6 Qd8+/–) 21...cb5+= 22.Qh3 (22.Qb3!?+=) 22...Nb8= 23.Be6 Nc6 24.Bf7 Qf7 ½–½. Sieber,M (2015) – Zigo,V (2240), CZE, Liga, 2012.

6.Nf3 f6 7.Qc2 Nd7 8.d4 e4 9.Nfd2 Be7 (9...Ne7 10.Be2+=) 10.Nc3+= a6 11.Be2 Nh6 12.b5 f5 (12...Qc7 13.bc6 bc6 14.0–0+=) 13.a4 (13.c5 Qc7 14.b6 Qb8+=) 13...Nf6 (13...dc4 14.Nc4 Bc4 15.Bc4 ab5 16.ab5 Ra1 17.Ba1+=) 14.Ba3+= Qd7 15.Be7 Qe7 16.bc6 bc6 17.0–0 (17.Rb1 0–0+=) 17...0–0 18.g3 (18.cd5 cd5 19.Rac1 f4=) 18...f4 (better is 18...c5=) 19.ef4 (19.gf4 Qe8 20.Kh1 Qg6=) 19...Bh3 (better is 19...Nf5–/+) 20.Rfe1+= Qd7 (20...Nf5 21.Nb3+=) 21.Nf1 Bg4 22.Ne3 Be2 23.Qe2 Nhg4 24.cd5+/– cd5 25.Ncd5! Nd5 26.Qg4 Qg4 27.Ng4 Nc3 28.Ra3 Rac8 29.Re3 Nb1 30.Ra1 Nd2 31.Ne5 Rfd8+/– 32.Kg2 Rd4 33.Rd1 Nb3? 34.Rd4+– Nd4 35.Re4 Nb3 36.Rb4 Nd2 37.Rb6 Ra8 38.f3 h6 39.Kf2 a5 40.Ke2 Rd8 41.Rb2 (41...Rd4 42.Rd2 Ra4 43.Rd8 Kh7 44.f5 Ra2 45.Kf1+–) 1–0. Lebel,Patrick (2180) – Kraft,Mathias (2060), NATO–ch13 Brest, 2002.

6.Nf3 f6 7.cd5 cd5 8.Bb5 Nc6 =.

5.c4 Nf6

(--> 4.e3 Nf6 5.c4 c6).

6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

5.d4 e4

6.c4 Bf5 7.Nc3 Nd7 (7...dc4 8.Nge2=) 8.Qb3 (8.cd5!? cd5 9.Nb5+=) 8...Ngf6 9.Nge2 Be6 (9...dc4 10.Qc2=+) 10.Nf4 Be7 11.Rc1 (11.cd5 cd5 12.Nb5 Qb6+=) 11...0–0 12.Ne6 fe6 13.c5 Qc7 14.b5 a6 15.b6 Qd8 16.a4 Ng4 (better is 16...Qe8!?=+) 17.Ne4+= Kh8 (17...de4 18.Qe6) 18.h3?? (18.Be2 Nh6 19.Ng3 Nf6+/–) 18...Ne3?? (better is 18...Nf2 19.Nf2 Bh4–/+) 19.fe3 (better is 19.Qe3 de4 20.Qe4+/–) 19...de4= 20.Qe6 Bh4 21.Kd2 Rf2 22.Kc3?? (22.Be2 Qg5 23.Qg4 Qe7=) 22...Nf6 (better is 22...Nc5 23.Qc4 Qb6–+) 23.Rc2 Nd5 24.Kb3 Qf8 25.Rf2 Qf2 (better is 25...Bf2 26.Bc4 Ne3=+) 26.Bc4?? (better is 26.Qe4 Qd2 27.Bd3+/– (27.Qh4?! Qb4 28.Ka2 Qa4 29.Kb1 Qd1 30.Ka2 Qa4 31.Kb1 Qd1 32.Ka2 Qa4=)) 26...Qe3 27.Kc2 Nb4 28.Kb1 Rf8 (28...Nd3 29.Rd1 Nb2 30.Kb2–+) 29.d5 (29.Rf1!? Bf6 30.Rf6 gf6 31.Qe7+=) 29...cd5= 30.Bd5?? (better is 30.Rf1 Rf1 31.Bf1 Qe1 32.Bc1=+) 30...Qd3 31.Ka1 Nd5 (31...Rf1 32.Rf1 Qf1 33.Bc1 Qc1) 32.Qg4 (32.c6 Nb4 33.Rc1 Nc6 34.Qc4–+) 32...Bf6 33.Bf6 Nf6 34.Rd1 (34.Qd1 Qa3 35.Kb1 Qb4 36.Ka1–+) 34...Qa3 35.Kb1 Qb3 36.Kc1 Nd5 37.Qg7 (37.Rd5 Qd5 38.Qe2 Qc5 39.Kb1 Qg1 40.Kc2–+) 37...Kg7 38.Rd5 Qd5 39.Kc2 Qd3 40.Kc1 Rf2 (41.c6 Qc2#) 0–1. slavisa11 – KingCurly, Live Game Caissa's Web, 2004.

6.c4 Nf6 7.Qc2 Be6 =.

6.c4 Nf6 7.c5 Qc7 8.Nd2 =.

6.c4 Nf6 7.c5 Qe6 8.Ne2 (8.Be2 Be7=) 8...Qf5 9.Nf4 (9.Nbc3 Be7=) 9...h5 (9...Be7 10.b5=) 10.h4 g6 (10...Be7 11.Nd2=) 11.Nc3 Bh6 12.Nce2 (12.g3 0–0=) 12...Qd7 (12...0–0 13.Qd2=) 13.Qb3 0–0 14.g3 Qe7 (14...Bg7 15.Bg2=) 15.Bh3 (15.Bg2 Bg4=) 15...Bg4 (15...Bh3 16.Nh3 Na6 17.0–0+=) 16.Bg4= Ng4 17.a4 (17.0–0 Nd7=) 17...Nd7+= 18.b5 Ndf6 (18...Bg7 19.0–0+=) 19.0–0= Rfe8 (19...Qd7 20.Rfb1=) 20.Rab1 Qd7 (20...Bg7 21.Bc3=) 21.Bc1 (21.Bc3 Rab8=) 21...Re7 22.Bd2 g5 (22...Bg7 23.Nc3=) 23.hg5+= Bg5 24.Kg2 h4 (24...Qf5 25.bc6 bc6 26.Rh1+=) 25.Rh1 (25.gh4 Bh4 26.Rh1 Bg5+=) 25...hg3= 26.fg3 (26.Kg3 Kg7=) 26...Nh6 (26...a6 27.bc6 bc6 28.Kf1=) 27.Qd1 (27.bc6 bc6 28.Rh3 Kf8=) 27...Qg4= 28.Nc3 Bf4 (28...Nf5 29.Rh3=) 29.Qg4 Nfg4 (29...Nhg4 30.gf4 (worse is 30.ef4 e3 31.bc6 bc6+=) 30...Kg7 31.Rh4=) 30.gf4+= (worse is 30.ef4 Kg7+=) 30...f5 (30...Re6 31.a5 Nf5 32.Rh3+=) 31.Kf1 Kf7 32.Ke2 (32.Na2 Ke6=) 32...Ke6 33.a5 Nf7 (33...Rg7 34.Ra1=) 34.a6 cb5 (better is 34...ba6 35.bc6 Rc8+/–) 35.Rb5+– (35.Nb5?! ba6 36.Nc3 Rc8=) 35...Nd8 36.ab7 Nb7 (36...Rb7 37.Rb7 Nb7 38.Rh7+–) 37.c6 (37.Ra1!? Nd8 38.Ra6 Kf7 39.Nd5 Re6+–) 37...Nd6 38.Rd5 Rb8 (38...Rg7 39.Rc5 Nf6 40.d5 Ke7 41.Nb5 Rg2 42.Kd1+–) 39.Rc5 Rb2 (39...Rg7+–) 40.d5 Kf6 (40...Kf7 41.c7 Re8 42.Rh7 Kg6 43.Rd7+–) 41.c7 Re8 (41...Rb6 42.Rh8 Kf7 43.Rd8+–) 42.Rc6 (better is 42.Na4 Rd2 43.Kd2+–) 42...Ke7 (42...Rb6 43.Rb6 ab6+–) 43.Rh7 Nf7 44.c8Q (44.Re6 Kd7 45.Rf7 Re7 46.Ree7 Kc8 47.Rf8 Kb7 48.c8N Ka6 49.Ra7) 44...Rc8+– 45.Rc8 Ngh6 (45...Rb7 46.Rc6 Ke8 47.Re6 Kf8 48.Rh5+–) 46.Rc7 Kf8 47.d6 Ke8 (47...Kg8 48.d7 Rb6 49.Rg7 Kf8 50.Nd5+–) 48.Nd5 a5 49.Rhf7! Nf7 (49...Nf7 50.Re7 Double attack) 50.Rf7! Kf7 51.d7 Rb8 52.Ba5 Ke6 53.d8Q Rd8 54.Bd8 Kd5 55.Kd2 (55.Ke1 Ke6 56.Bc7 Ke7+–) 55...Kc4 56.Kc2 (56.Ke1!? Kd5+–) 56...Kb4 57.Be7 Kc4 58.Bf8 (58.Bf8 Kd5 59.Kc3+–) 1–0. Raudsepp,Kusta – Suetin,Alexey S (2390), Wch Seniors Gladenbach, 1999.

6.c4 Nf6 7.cd5 Bg4 8.f3 Bf5 9.dc6 Nc6 10.Nc3 Rd8 11.Bb5 a6 12.Ba4 ef3 13.Nf3 b5 14.Bb3 Qe7 15.Qc1 (15.Qe2 Be6 16.Be6 Qe6+/–) 15...Bd3 (better is 15...Qd7!?+/–) 16.Nd5!+– Qd6 (16...Nd5 17.Qc6) 17.Nf4 Be4 (17...Bc4 18.Bc4 bc4 19.Qc4+–) 18.Ne5 Ke7?? (18...Rd7 19.Nd7 Qd7+–) 19.Nf7 Bg2 (19...Qd7 20.Nh8 Rc8 21.Be6+–) 20.Ng2 Nb4 21.Nf4 (better is 21.0–0 Qb8 22.ab4 a5 23.Qc5 Rd6 24.ba5 Ke8 25.Qe5 Be7 26.Nh8 Qb7+–) 21...Qf4 22.ef4 (22.Nh8 Nd3 23.Kd2 Nc1 24.ef4 Nb3 25.Kd3 Na1 26.Re1 Kd7 27.Ra1 Ke8=+) 22...Nd3 23.Kd1 Nc1 24.Rc1 (24.Nh8?! Nb3 25.Re1 Kd7+/–) 24…Kd7 1–0. Fritz 5.32 – Fritz 6, 2004.

5.Nf3 Nd7

(--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nbd7 5.e3 c6).

6.c4 Ngf6 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

4.e3 Nc6

5.c4 dc4 6.Bc4 Be6 7.Be6 Qe6 8.Ne2 (8.Nf3 e4 9.Nd4 Nd4 10.Bd4 Ne7=) 8...Nh6 (8...Nf6 9.d4 Bd6 10.0–0=) 9.d4 ed4 (9...0–0–0 10.Qa4 ed4 11.b5= (worse is 11.ed4 Nf5–/+; 11.Nd4? Nd4 12.Bd4 Rd4–+)) 10.Nd4 (10.b5 de3 11.bc6 ef2 12.Kf1 Qc6=) 10...Nd4 11.Bd4 Nf5 12.Bb2 (12.0–0 Bd6=) 12...Rd8 (12...Qe4 13.Rg1=) 13.Qc2 Nh4 (better is 13...c6=) 14.Nc3 (better is 14.0–0!? Qg6 15.Qg6 Ng6 16.Nc3=) 14...Ng2–/+ 15.Kf1 Nh4 16.Qe4 Qe4 17.Ne4 Nf5 (17...f5 18.Ng5–/+) 18.Rg1+= Be7 (18...h6 19.Ke2+=) 19.Ke2 (19.Rc1 c6=) 19...c6 (19...f6 20.Rac1 Rd7 21.Rcd1+=) 20.Rac1 (20.Ng3 Ng3 21.Rg3 Bf6 22.Bf6 gf6=) 20...f6 (20...Rg8+=) 21.Nd2 (21.Nc5!? Bc5 22.Rc5=) 21...Kf7 22.Nf3 (22.h3 Rhe8–/+) 22...Rd7 (22...Bd6 23.Rgd1–/+) 23.Bd4 (23.e4!? Nd6 24.e5–/+) 23...Nd4–/+ 24.Nd4 g6 (24...Rhd8 25.Rcd1–/+) 25.h3 (25.Rcd1 Rhd8–/+) 25...Rhd8 26.Rgd1 f5 27.Nc2 (27.Nb3 Rd1 28.Rd1 Rd1 29.Kd1 b6–/+) 27...Rd1 28.Rd1 Rd1 29.Kd1 Ke6 (29...c5 30.bc5 Bc5 31.Ke2–/+) 30.Ke2 Kd5 31.Kd3 c5 32.bc5 Bc5 33.f3 (33.a4!? a6–+) 33...b5 34.Kc3 (34.h4 a5–+) 34...a5 35.Kb3 h5 36.Kc3 (36.Kb2 g5 37.a4 ba4–+) 36...g5 0–1. Krafzik,Joachim (1845) – Villing,Dieter (2120), Chiemgau Cup Seniors 3th, 2007.

5.d4 e4 6.c4 Nge7 (6...Nf6 7.Nc3 Ne7 8.Rc1=) 7.Nc3+= Bf5 8.Nge2 a5 9.Qa4 h5 (9...Be6 10.Nf4+/–) 10.Nf4 (10.Ng3 Be6+/–) 10...Qd8 (10...dc4!? 11.d5 0–0–0+–) 11.Ncd5+– (worse is 11.cd5 ab4 12.Qa8 Qa8 13.ab4 Na7–/+; 11.Nfd5?! Nd5 12.Nd5 Bd6+/–) 11...Nd5 (11...Qd7 12.b5 Nd8 13.Ne7 Be7 14.Nd5+–) 12.Nd5 (12.cd5 ab4 13.Qb5 Ra5 14.Qb7 Nb8 15.ab4 Ra1 16.Ba1 g5 17.Bb5 Nd7 18.Bd7 Qd7+–) 12...Qd7 13.h3 Rh6 14.Rb1 b6 (14...b5 15.cb5 Qd5 16.bc6 Rc6 17.Qb5+–) 15.Bc3 (15.Be2 b5 16.cb5 Qd5 17.bc6 Rg6+–) 15...Kd8 16.ba5 (16.Be2 Ne7 17.Qd7 Bd7 18.Ne7 ab4 19.ab4 Be7+/–) 16...Na5+/– 17.Rb5 (17.Qd7 Kd7 18.c5 bc5 19.dc5 Ra7+/–) 17...Qc8 18.Qc2 (18.Ba5?! Bd7=) 18...Nb7 19.c5 Ra3 20.Be2 (20.Qb2 Ra8+/–) 20...Bd7 (20...bc5 21.Qb2 Ra7 22.dc5 Bc5 23.Bg7 Rha6+–) 21.Rb1+/– Bc6 22.Nb4 Bd7 23.Qb2 Qa8 24.0–0 bc5 25.dc5 Bc5 26.Ra1 Ra1 27.Ra1 Qc8 28.Nd5 Rd6 29.Ba6 Bc6 30.Nf4 Bb6 31.Be5 Qd7 32.Bd6 Nd6 33.Qg7 Qe7 34.Rc1 Ba8 35.Nh5 f5 36.Qg8 Qe8 37.Qg5 Qe7 38.Nf6 Bd5 39.Qh6 Qf7 40.Qh4 Be6 41.Rd1 Bb3 42.Ne4 Qe7 43.Qh8 Qe8 44.Qe8 Ke8 45.Nd6 cd6 46.Rb1 Be3 47.Rb3 Bh6 (47...Bd4 48.Rb4 Bc3 49.Rf4+–) 1–0. Riepe,Bernhard – Breitenstein,Dieter, desc–online.de, 2003.

5.Nf3 e4 6.Nd4 (--> 4.Nf3 e4 5.Nd4 Nc6 6.e3).

5.Nf3 Nf6 6.b5+/– Bg4? (better is 6...e4 7.bc6 ef3 8.cb7 Bb7 9.Qf3 Be7+=) 7.Be2?? (better is 7.bc6 e4 8.cb7+–) 7...Bf3= 8.bc6 (8.Bf3!? Ne7 9.d3=) 8...Be2–/+ 9.Qe2 Rb8 10.cb7 Rb7 11.Bc3 Be7 12.0–0 d4 13.ed4 ed4 14.Bb4 c5 15.Qa6?? (better is 15.Ba5–/+) 15…Qa6–+ 0–1. Fournier,Frederic (1900) – Superchave, Active, 2011.

5.Nf3 Bg4

6.b5 e4 7.bc6+/– ef3 8.gf3 Bf5 9.cb7 Rb8 10.Bb5 Bd7 11.Bd7 Kd7 12.c4 Rb7 (12...dc4 13.Qa4 Double attack) 13.Ra2 Qg6 (13...dc4!? 14.Qa4 Qc6 15.Qc6 Kc6+=) 14.cd5+/– Bd6 15.Ke2 Nf6 16.Qa4 Ke7 17.Bf6 gf6 (17...Qf6 18.Nc3+/–) 18.Nc3+– Rhb8 19.Raa1 Rb2 20.Ne4 (20.Qa7 Qc2 21.Qd4 Be5 22.d6 cd6 23.Nd5 Ke6 24.Nf4 Bf4 25.ef4 Kd7+/–) 20...R8b3 (20...R2b7 21.Nd6 cd6 22.Rhg1+–) 21.Rhg1 Qf5 22.Rg8 (22.Qa7?! Qd5 23.Qa6 f5+/–) 22...Rb8 (22...Qd7 23.Qd7 Kd7+–) 23.Rb8 Rb8 24.Nd6 Qd5 (24...Qe5 25.Rb1! Rd8 26.Ne4 Qd5 27.Qb4 Ke6 28.Nc5 Ke7 29.Nb7 c5 30.Qc5 Ke8 31.Rb4 Qc5 32.Nc5+–) 25.Qa7 Rd8 26.Qc7 Rd7 27.Nc8 Ke8 28.Qc3 h5 (28...Qb5 29.Ke1 Qg5 30.Rc1+–) 29.Rg1 (29.Rg1 Qb5 30.d3+–) 1–0. Pcmvr – R_I_C_H, playchess.de, 2005.

6.b5 Bf3 7.Qf3 e4 8.Qd1 Ne5 9.d4 Nc4 10.Bc4 dc4 11.Qe2 a6 (11...Qd5 12.Nd2=) 12.Qc4+= c6 13.bc6 bc6 14.Nd2 Nf6 15.Rb1 Qd5 (15...Be7 16.f3 ef3 17.gf3+=) 16.Bc1 (better is 16.Qd5 cd5 17.c4 dc4 18.Nc4+/–) 16...c5? (better is 16...Be7!?+/–) 17.Qd5+– Nd5 18.c4 (18.Ne4!? c4+–) 18...Nf6+/– 19.d5 Bd6 20.Bb2 Rb8 21.Ke2 0–0 22.Bf6 gf6 23.Ne4 Rb1 24.Rb1 Bh2 25.g3 Kg7 26.Rh1 Bg3 27.fg3 Rb8 28.Nc5 Rb2 29.Kf3 a5 30.d6 Rd2 31.d7 Rd6 32.Rh4 Kg6 33.Rd4 Rd7 34.Nd7 h5 35.c5 (35...f5 36.c6+–) 1–0. Pommerel,Wim – Eifrig, CiF, 1990.

6.Be2 f5 7.c4 (7.0–0 Nf6=) 7...dc4 8.b5 Bf3 9.Bf3 Nd8 10.Qc2 Ne7 11.Qc4 c6 12.0–0 e4 13.Be2 Qd5 14.Qc2 cb5 15.Nc3 Qd7 16.Bb5 Ndc6 17.d3 ed3 18.Bd3 0–0–0 (better is 18...Ne5!? 19.Bb5 N7c6+/–) 19.Rfd1+– Qe6 20.Nb5 Kb8 21.Rac1 h5 22.Nd4 Qf7 23.Bc4 Qe8 24.Bf7!! (24...Qf7 25.Nc6 Nc6 26.Rd8 Kc7 27.Rcd1+–; 24.Nf5?! Rd1 25.Rd1 Qg6+–) 1–0. brain boardonly – arturo, ChessWorld.net, 2005.

4.e3 Nd7

5.Nc3 c6 6.Nf3 Qg6 (6...Ngf6 7.Be2=+) 7.Nh4 (7.Rb1 Bd6=) 7...Qh6 (7...Qf6 8.Nf3=) 8.Nf5 (8.Nf3 Ngf6=) 8...Qg5 9.Ng3 h5 (9...Ngf6 10.h4 Qh6 11.e4=) 10.h4 Qg6 11.d4 (11.Be2 Ngf6=) 11...e4 12.Nce2 Bd6 13.Nf4 Bf4 14.ef4 Ne7 15.c4 (15.b5 Nb6=+) 15...a6 (15...Nf6 16.Rc1=+) 16.cd5= cd5 17.Rc1 Nf6 18.Rc7 Ng4 (18...Nf5 19.Nf5 Qf5 20.Qd2=) 19.Qc1 Qd6 20.b5 (20.Qc5 Qc5 21.Rc5= (< 21.bc5 Kd8 22.Re7 Ke7–/+; 21.dc5?! Kd8 22.Re7 Ke7=)) 20...0–0 (20...ab5!? 21.Bb5 Kd8=) 21.ba6 ba6 22.Nh5 e3 23.fe3+/– Ne3 24.Qc5 N7f5 25.Qd6 Nd6 26.Ng3 Re8 27.Bc1 Rb8 28.Kf2+= Ng4 29.Kg1 Re1 30.Bd2 Rd1=+ 31.Bb4 Nc4 32.Ne2 a5 33.Nc3 Ra1 34.Nd5 ab4 0–1. Benussi,Alberto (1740) – Nicolo,Filippo (1700), TG, 1997.

5.c4 Ne7 6.Nf3 c6 7.Nc3 e4 8.Nd4 Nf6 9.Qc2 Bd7 10.d3 ed3 11.Bd3 dc4 12.Bc4 Ned5 13.Nd5 cd5 14.Bd3 Rc8 15.Qe2 Be7 16.0–0 0–0 17.Nf5 Bf5 18.Bf5 Rc4 19.Rfd1 Rh4 20.g3 Rc4 21.Rd3 g6 22.Bh3 Qc6 23.Rad1 Ne4 24.Rd5 (24.b5!? Rc2 25.R3d2 (< 25.bc6 Re2 26.Bd4 Nf2–/+) 25...Rd2 26.Rd2+= (26.bc6 Re2 27.Bd4 Nf2–+)) 24...Rc2=+ 25.Qd3?? (better is 25.R5d2 Rd2 26.Rd2 Nd2 27.Qd2=+) 25...Nf2–+ 26.Qd4 Nh3 27.Kh1 Rb2 (better is 27...f6 28.Rd2 Nf2 29.Kg1 Ne4–+) 28.Qb2 Re8 29.Kg2 Bf6 30.Qb3 Ng5 31.b5 Qe6 32.Qd3 Qh3 (32...Qe3?! 33.h4 Qd3 34.R5d3–+) 33.Kh1 Ne4 34.Kg1 Nc3 35.Re1 Nd5 36.Qd5 Rd8 37.Qg2 Qd7 38.Rf1 Be7 39.a4 Bc5 40.Qf3 Re8 41.Re1 Qd2 42.Re2 Qd1 43.Kg2 Qa4 44.Qb7 Qe4 (44...Re3?! 45.Re3 Qc2 46.Kf1 Qb1 47.Ke2 Qb2 48.Kf3 Be3 49.Ke3 Qc3 50.Ke2–/+) 45.Qe4 Re4 46.Kf3 Rb4 47.e4 Rb5 48.e5 a5 49.e6 fe6 50.Re6 a4 51.Ra6 a3 52.Ke4 Bf8 53.Kd3 (53.Ra7 Rb2–+) 53...Rb2 54.h3 Rg2 55.g4 a2 56.Ra8 (56.Ke4 Bg7 57.Ra8 Kf7 58.Ra7 Ke6 59.Ra6 Kd7 60.Ra7 Kc6–+) 56...Kf7 (better is 56...Rg3 57.Kc4 Ra3 58.Ra3 Ba3–+) 57.Ra7 Kf6 58.h4 (58.Kc4 Kg5 59.Kb3 Rg3 60.Ka2 Rh3–+) 58...Ke5 (better is 58...Rg3 59.Ke2 Ra3 60.Ra3 Ba3 61.g5 Ke5–+) 59.Ke3 (59.Kc4 Rg4 60.Kb3 Rh4 61.Ra2 Rb4 62.Kc3–+) 59...Bc5 60.Kf3 (60.Kd3 Ba7 61.Kc3 a1Q 62.Kc4 Qa4 63.Kc3 Bd4 64.Kd3 Qb3#) 0–1. Veensma,Torsten (1725) – Grotenhuis,Gerald (1975), Muensterland Verbandsklasse–A, 2003.

5.d3 Ngf6 6.Be2 Be7 7.Nd2 0–0 8.Ngf3 h6 9.e4 c6 10.Nh4 g6 11.f4 Nh7 (better is 11...Ne4 12.Ndf3 ef4 13.de4 de4 14.Qd6 Bd6+=) 12.f5?? (better is 12.Nhf3 ef4 13.0–0=) 12...Bh4–+ 13.g3 Be7 14.Nf3 b5 15.Qd2 g5 16.0–0–0 (16.g4 a5! 17.ed5 cd5 18.ba5 Re8–+) 16...d4 (better is 16...g4 17.h4 gf3 18.Bf3–+) 17.h4 (17.g4 a5! 18.ba5 Bd8–+) 17...g4 18.Nh2 h5 19.Kb1 Kg7 (19...a5 20.ba5 Bd8 21.a6–+) 20.Bc1 Kh8 21.Rdf1 Bd8 22.Rf2 (22.Qh6 Ndf6–+) 22...Rg8 23.c3 c5 (23...dc3!? 24.Qc3 Bb6 25.Rff1–+) 24.cd4 Qd4 25.Rf4 ef4 26.Bb2 Qb2! 27.Qb2 (27.Kb2 Bf6; 27.Qb2 Bf6) 27...Bf6 28.Qb3 fg3 29.Ng4 hg4 (29...Rg4?! 30.Bg4 g2 31.Rg1–+) 30.bc5 Bb7 31.Qb4 (31.Qf7 Nc5 32.Re1 Rgd8–+) 31...a6 (31...Rac8 32.c6 Bc6 33.h5–+) 32.Qe1 (32.Rc1 Rac8 33.Bf1 Rgd8–+) 32...Nc5 33.Bd1 a5 34.Bc2 Rae8 35.Qg3 Be5 36.Qe3 Bd6 37.h5?? g3 38.Qd4 Be5 39.Qc5 g2 40.Rg1 Bh2 41.Qd4 f6 42.Bb3 Rg7 43.h6 Rg3 44.Bd1?? Bg1–+ 45.Qg1 a4 46.Kc1 Rd3 47.Qg2 Ng5 48.Kc2 Ra3 49.Kb2 b4 50.Qd2 Ne4 51.Qd7?? Rg8 52.Qb7 Rg2 53.Bc2 Rb3 54.Kc1 Rg1 55.Bd1 Rc3 56.Kb2 Rg2 57.Kb1 Nd2 58.Ka1 Rc1 59.Kb2–+ Rd1 60.Qg2 Nc4 61.Kc2 Ne3 62.Kb2 Ng2 63.h7 Kh7 64.Kc2 Ne3 0–1. ffrancis – Haroldlee123, ChessWorld.net, 2012.

5.d4 a5 6.de5 Ne5 7.b5 =.

5.d4 e4 6.c4 c6 7.Qb3 Ngf6 8.Nc3 g6 (8...a5 9.ba5 Ra5 10.cd5 cd5 11.Rc1+=) 9.c5 (9.cd5!? cd5 10.Nb5+/–) 9...Qc7= 10.b5 Bg7 11.a4 0–0 12.a5 a6 13.b6 Qd8 14.0–0–0 Qe7 15.Nge2? (better is 15.Be2=) 15...Ng4–+ 16.Rd2 Nf2 17.Rg1 Nd3 (17...Ng4 18.Nd1 Nh2 19.Nec3–+) 18.Kc2 Bh6 (18...Re8 19.Nd1–+) 19.Nd1–/+ Nf6 20.h3 Ne8 21.Ng3 (21.Nc1 Nc1 22.Kc1 Qg5–/+) 21...Qh4 (21...Qg5!? 22.Ne2–+) 22.Nh1–/+ Nb2 23.Kb2 Qe7 24.g4 Bg5 25.Rdg2 Ng7 26.Be2 Bh4 27.Ng3 Kh8 28.Kc2 Ne6 29.Nf2 Bf6 30.Qb1 Bg5 31.Nf1 Bd7 32.Qd1 Bf6 33.g5? Ng5 34.Ng4 Bg7 35.h4 Nf3 36.Bf3 ef3 37.Qf3 Bf5 38.Kd1 Be4 39.Qe2 Bg2 40.Rg2 h5 41.Nf2 Rae8 42.Nd3 Qe4 43.Ng3 Qe3 44.Qe3 Re3 45.Kc2 Bd4 46.Nf4 Be5 47.Nfe2 Bg3 48.Ng3 f5 49.Nf1 Re6 50.Kd3 Kg7 51.Rg5 Kf6 52.Nd2 Rfe8 53.Nf1 Re4 54.Kc3 Rh4 55.Rg3 Rc4 56.Kb3 Rc5 57.Kb4 Rb5 58.Ka4 Re4 59.Ka3 Ra5 60.Kb3 Rb5 61.Kc2 Rb6 62.Rg6 Kg6 63.Ng3 Rg4 64.Nf5 Kf5 (64...Kf5 65.Kc3 c5 66.Kd2 Rg2 67.Kc3 h4 68.Kd3 Rb3#) 0–1. Berner,Stephan (1770) – Paehtz,Elisabeth (2265), GER schools Cup, 2004.

5.d4 f6 6.Nc3 (6.c4 dc4 7.Bc4 Qc6=) 6...c6 (6...Ne7 7.e4=) 7.e4 de4 (7...a5 8.b5=) 8.Ne4+= Qd5 (8...Qe7 9.Qh5 g6 10.Qe2+=) 9.Qh5 (9.Qe2 a5 10.de5 Qe6 11.Nd6 Bd6 12.ed6 Ne5+–) 9...g6 (9...Kd8 10.Qe2 ed4 11.Rd1+=) 10.Qe2+/– Nh6 (10...a5 11.de5 fe5 12.b5+/–) 11.de5 fe5 12.Rd1 Qe6 13.Qc4 Qc4 14.Bc4 Be7 15.Nf3 (15...Nf7 16.Bf7 Kf7 17.Rd7 Bd7 18.Ne5 Ke6 19.Nd7 Kd7 20.Bh8 Rh8 21.Kd2+/–) 1–0. pcmvr (2785) – cruyce (2585), net–chess.com, 2006.

5.Nf3 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3).

5.g3 c6 6.Bg2 h5 7.h4 Ngf6 8.d3 Ng4 9.Nd2 Nb6 10.c4 Qg6 11.c5 Nd7 12.Nb3 Ne3 (12...b6 13.cb6 ab6 14.b5+=) 13.fe3= Qg3 14.Kf1 Qe3 15.Qf3 Qh6 16.Re1 f6 17.Nd4 Qd2 (17...Kf7 18.Nc2=) 18.Bc1 Qc3 19.Nge2 Qa1 20.Ne6 e4? (better is 20...Kf7!? 21.Bh3 a5+/–) 21.Qg3 (21.Nc7 Kd8 22.Qg3 Rb8 23.Ne6 Ke7 24.Nf8 Rf8+–) 21...Ne5? (21...Kf7 22.de4 Ke6 23.ed5 Ke7 24.dc6 Ne5 25.cb7 Bb7 26.Bb7 Rb8+–) 22.Nc7 Kd8 (22...Kf7 23.de4 (23.Na8?! Nd3 24.Rd1 Qe5+–) 23...Rb8 24.ed5+–) 23.Na8 ed3 24.Nf4 Qa2 25.Nd3 Qc4 26.Re5 fe5 27.Bg5 Ke8 28.Qe5 ½–½. Fournier,Sylvain (1935) – Vigneron,Frederic (2010), Fouesnant op, 2007.

5.c4 dc4

6.Bc4 a5 7.Nf3 (7.Nc3 Nb6 (7...Ngf6 8.Nf3 ab4 9.Nb5 Qc6 10.Rc1 ba3 11.Be5 Ne5 12.Bf7 Kd8; 7...ab4 8.ab4 Ra1 9.Qa1 Nb6 10.Be2 f6 11.Nf3 Qb4 12.Qa2 Bd6) 8.Be2 Nf6 (8...c6 9.b5 Nf6 10.bc6 bc6 11.Nf3 Be7 12.Qb3 0–0) 9.Nf3 e4 10.Ng5 Qe7 11.Qc2 Bf5 12.f3 ef3) 7...ab4 8.0–0 (8.Qc2 Qg6 (8...Ne7 9.0–0 Qg6 10.Bd3 Qc6 11.ab4 Qc2 12.Bc2 Ra1) 9.Qg6 fg6 10.ab4 Ra1 11.Ba1 Bb4 12.Ne5 Ngf6) 8...c6 (8...Be7 9.ab4 Ra1 10.Ba1 c6 11.Qb3 Nh6 12.b5 0–0) 9.Ba2 b5 (9...b3 10.Bb3 Be7 11.d4 ed4 12.Nbd2 Ngf6) 10.ab4 Bb7 (10...Ra6 11.Nc3 Qb4 12.Qc2 Nh6) 11.d4 (11.Ng5 Nh6 12.Bc3 c5) 11...Nh6 (11...ed4 12.ed4 Be7) 12.Nc3 (12.Nbd2 ed4) 12...Qb4 (12...ed4+/–) 13.Qc2 Qd6 14.de5 Qg6 15.Qe2 Be7 16.Rfd1 Nc5 17.Bb1 Qg4 18.Ra8 Ba8 19.Ba3 Qc4? (better is 19...0–0 20.h3 Qe6+–) 20.Qd2 b4 21.Ne4 Qd5 (21...ba3?? 22.Nd6 Kf8 23.Nc4+–; 21...Ne4?? 22.Qd7 Kf8 23.Qc8 Bd8 24.Qd8) 22.Qe1 Qc4 23.Bb4 Ne4 24.Be7 Ke7 25.Be4 Rd8 (25...Qe4 26.Qd2 Qd5 27.Qb4 c5 28.Qh4 Kd7 29.Qa4 Kc7 30.Rd5 Bd5 31.Qa7 Bb7 32.Qc5 Kb8 33.Nd4+–) 1–0. antinephilehi (2005) – hockenheimer17 (1995), gameknot.com, 2012.

6.Bc4 Nb6 7.Bb5 c6 8.Be2 =.

6.Bc4 Nb6 7.Be2 e4 (7...a5 8.b5=) 8.Nc3 (8.d3 Qg6 9.de4 Qg2=) 8...Qg6 9.Qc2 Nf6 10.g3 c6 (10...Bd6 11.Nb5 0–0 12.Nc7 Bc7 13.Qc7=) 11.f3 (11.d3 ed3 12.Bd3 Qh5+=) 11...ef3+= 12.Qg6 f2 13.Kf2 hg6 14.Nf3 Bh3 (14...Bg4 15.d3+=) 15.Rhe1 (15.Ng5 Rd8 16.Rad1 Bg4=) 15...Bg4 16.Kg2 Nbd5 (16...Be7 17.b5+=) 17.e4 (17.Nd5 Nd5 18.h4 a5+=) 17...Nc7 (17...Nc3 18.Bc3 Be7 19.d3=) 18.d4 a5 (18...Be7 19.Rad1=) 19.b5+= Ne6 (19...Rd8 20.bc6 bc6 21.Rad1+=) 20.Rad1 Be7 (20...Bh3 21.Kh1+=) 21.bc6 (21.d5 Bh3 22.Kh1 Nc5+/–) 21...bc6+= 22.d5 Nc5 (22...Rb8!? 23.Ba1 Bf3 24.Bf3 Ng5+=) 23.dc6+/– Bh3 24.Kg1 Ne6 25.Ne5 (25.Nb5!? Bc5 26.Bd4 Nd4 27.Nfd4+/–) 25...Bc5+= 26.Kh1 Bf2 27.Nd5 (27.Nc4 Be1 28.Re1 Kf8+=) 27...Be1 (better is 27...Ne4 28.Nf3 Be1 29.Re1 Bg4+=) 28.Re1+/– Ne4 29.Bf3 (29.Bb5!? Ng3 30.Kg1+=) 29...N4g5= 30.Bg2 (30.c7 Rc8 (30...Nf3 31.Nf3 f6 32.Nb6+=) 31.Bd1 Bf5 (31...Nc7? 32.Ng6 Kd7 33.Nb6 Kd6 34.Nc8 Rc8 35.Be5 Kc5 36.Ne7+–) 32.Ba4 Kf8=) 30...f6+= 31.Nb6 Bg2 (31...Ra7 32.Nc8 Ra8 33.Nb6 Bg2 34.Kg2+=) 32.Kg2 Ra6 33.c7 Nc7 34.Ng6 Nge6 35.Nh8 Rb6 36.Bc3 Rb5 37.Re4 (37.Ng6 Rc5 38.Bd4 Rc2 39.Bf2 Kd7+=) 37...Rc5 (37...Kd7 38.Re1+=) 38.Be1 Rc2 (38...Kd7 39.h4+=) 39.Kf1 Kd7 40.Ba5 Nd5 (40...Rh2!? 41.Bc7 Nc7 42.Rd4 Ke6=) 41.Re2+= Rc1 42.Kf2 Nc5 (42...Rc5 43.Be1+=) 43.Ng6 f5 (43...Rc4 44.Kg2+=) 44.Bb4 Ne4 45.Kg2 Ndf6 (45...Ke6 46.g4+/–) 46.Bf8 Nc3 (better is 46...Ra1!?+/–) 47.Rd2 Ke8 48.Bg7 Nfe4 49.Bc3 Nd2 50.Bd2 Rc2 51.Kf3 Rd2 52.Nh4 Rh2 53.Nf5 Ra2 54.Ke4 Ra3 55.Ne3 Kf7 56.g4 Kg6 57.Nd5 Kg5 58.Ke5 (58.Ne3!?=) 58...Kg4+= 59.Nf6 Kg5 60.Ne4 Kg6 61.Nd6 Re3 62.Ne4 Re1 63.Kf4 Kf7 64.Ke5 Ke7 65.Kd5 Rh1 66.Ke5 Rh5 67.Kd4 Ke6 68.Nc5 Kd6 (68...Kf5 69.Nd3+=) 69.Ne4 Kc6 70.Nf6 Rf5 71.Ne4 Rd5 72.Ke3 Rd8 73.Kf4 Kd5 74.Nf6 Ke6 75.Ne4 Rd4 76.Ke3 Kd5 77.Nc3 Ke5 78.Ne2 Rh4 79.Kd3 Re4 80.Kd2 Ra4 81.Kd3 Rb4 82.Kc3 Rb8 83.Kd3 Rb2 84.Nc3 Rb4 85.Ne2 Rh4 86.Nc3 Rd4 87.Ke3 Rc4 88.Kd3 Rc8 89.Ne4 Rd8 90.Ke3 Rh8 91.Ng3 Ra8 92.Kf3 Ra4 93.Ne2 Ra3 94.Kg4 Rb3 95.Ng3 Re3 96.Nh5 Re2 97.Kf3 Rh2 98.Nf4 Ra2 99.Nd3 Kf5 (99...Kd4 100.Ne1–/+) 100.Ke3+= Ra4 101.Nf2 Rf4 102.Ke2 Rd4 103.Nd3 Rd5 (103...Ke4 104.Nf2 Kd5 105.Kf3–/+) 104.Ke3+= Rd8 105.Nc5 Rd6 106.Nd3 Rd5 107.Nf2 ½–½. Fernandez,Michael – Harvey,Marcus R, 101st ch–GBR, 2014.

6.Bc4 Qc6 7.Bf1 a5 8.b5 Qg6 9.d3 Bd6 10.Nf3 Ngf6 11.Nbd2 0–0 12.h3 Re8 13.Nh4 Qh6 14.Nf5 Qg6 15.Nh4 Qh6 16.Nf5 Qg6 17.Nh4 ½–½. pcmvr – battousai, net–chess.com, 2016.

6.Bc4 Qc6 7.Bf1 a5 8.b5 Qg6 9.d4 e4 =.

6.Bc4 Qc6 7.Bf1 a5 8.b5 Qg6 9.h4 Bd6 10.d3 (10.d4 Ngf6=) 10...Nc5 (10...Ne7 11.Nd2+=) 11.h5= Qf5 12.e4 (12.d4 ed4 13.Bd4 Ne6=) 12...Qd7 (12...Qe6 13.Nf3=) 13.d4= ed4 14.Qd4 (14.Bd4 Ne6 15.Bc3 Nh6=) 14...f6 15.Nd2 Qe7 16.Ngf3 Bg4 (16...Nh6 17.Be2+=) 17.b6 (17.Qe3 Nh6=) 17...Nh6 (17...Bf3!? 18.Nf3 Ne4+=) 18.bc7= 0–0 19.Rc1 Rac8 20.Bc4 Kh8 21.0–0 (21.Rc2 Rc7 22.Qe3 Bf3 23.gf3 Na4–/+) 21...Bc7 (better is 21...Bh5 22.Bd5 Rc7–/+) 22.e5? (better is 22.Rfe1!?+=) 22...fe5–/+ (worse is 22...Bh5 23.ef6 gf6 24.Qh4 Bf3 25.Nf3=) 23.Ne5 Rcd8 24.Qe3 Nf5 25.Qf4 (25.Qe1 Rd2! 26.Nf7 Rf7 27.Qd2 Ne4–+) 25...Rd2! 26.Qd2 Be5 27.Rfe1 Qd6 28.Qd6 Bd6 29.Be5 Bh5 (29...b6 30.f3 Be5 31.Re5 Bh5 32.g4=) 30.Bd6+= Nd6 31.Re5 Bf7 (worse is 31...Nc4 32.Rc4 b6 33.Rh5+/–) 32.Bf7 (32.Rc5 b6 (worse is 32...Bc4 33.Rd1+=) 33.Rc7 Nc4 (worse is 33...Bc4 34.Rc6+/–) 34.Rf7 Rf7 35.Rc4 h5–/+) 32...Nd3–/+ 33.Rd5 Nc1 34.Rd6 b5 35.Kf1 g6 36.Bd5 (36.Be6 Re8–/+) 36...Rc8 (36...b4 37.ab4 ab4 38.f3–/+) 37.g3 b4 38.ab4 ab4 39.Rb6 Rc2 40.Rb4 Rf2 41.Kf2 Nd3 42.Ke3 Nb4 43.Bb7 Kg7 44.Kd4 Nc2 45.Kd3 ½–½. Cirulis,Ilmars (1980) – Duttagupta,Aniruddha (1860), FICGS, 2016.

6.Bc4 Be7 7.Nc3 c6 8.Nf3 Ngf6 9.Qb3 0–0 10.Ng5 Nd5 11.Nge4 (11.Nd5? cd5 (11...Bg5?! 12.Nc3=+) 12.Qd3 Bg5 13.Qd5 Qe7–+) 11...Qg6 12.Bd5 cd5 13.Nd5 Bd8 14.Ng3 Kh8 (14...h5 15.0–0+/–) 15.h4 (15.Rc1 b5+/–) 15...h6 (15...Qg4 16.Rc1+=) 16.h5 (16.e4 Bb6+/–) 16...Qe6+= 17.Qd3 f5 (17...Nb6 18.e4+=) 18.Rc1 Nf6 19.Nc7 Bc7 20.Rc7 f4 21.Ne4 Qf5 (21...fe3 22.de3 (< 22.Qe3 Nd5 23.Qc5 Kg8=+) 22...Ng4 23.Qd6+–) 22.Nc5 e4 (better is 22...b6!? 23.Qf5 Bf5+/–) 23.Qd6+– Re8 24.Rh4 fe3 25.de3 b6 (25...Be6+–) 26.Rf4 Qh5 27.Bf6 (27...Ba6 28.Bg7 Kg8 29.Na6+–) 1–0. "A_Morozevich" – chessman2435, ICC, 2002.

6.Bc4 Be7 7.Nc3 Ngf6 8.Nb5 Qc6 9.Rc1 Qg2 10.Qf3 Qf3 11.Nf3 =.

6.Bc4 Be7 7.Qh5 Qf6 =.

6.Bc4 Qg6 7.Bf1 =.

6.Bc4 Qg6 7.Qf3 e4 8.Qg3 Qg3 9.hg3 Nb6 =.

6.Bc4 Qg6 7.Nf3 Bd6 (7...Qg2 8.Rg1 Qh3 9.Bf7 Kd8 10.Ne5 Qh2+=) 8.0–0= Ngf6 9.Nc3 (9.d4 e4 10.Ne5 Ne5 11.de5 Bh3+=) 9...e4=+ 10.Nh4 Qh6 11.g3 Ne5 12.Be2 g5 (12...a5 13.Qc2 Bh3 14.Rfc1=) 13.Ng2 Neg4 14.h4 Rg8 (14...Ne5 15.f4 ef3 16.Bf3 gh4 17.gh4=+) 15.Nb5 (15.Ne4 Ne4 16.Bg4 gh4 17.Bc8 hg3 18.fg3 Bg3 19.Bd7 Ke7 (< 19...Kd7 20.Rf7 Ke8 21.Qa4 c6 22.Rb7–+) 20.Rf7 Kf7 21.Qf3 Ke7 22.Qe4 Kd7 23.Qf5 Qe6–+) 15...gh4=+ 16.Nd6 cd6 17.gh4 (17.Nh4!? Be6 18.d3=+) 17...Qg6–/+ 18.Kh1 Qf5 (18...Nd5 19.d3 Nge3 20.Ne3 Ne3 21.Qa4 Bd7 22.Rg1 Ba4 23.Rg6 Rg6 24.fe3–+) 19.Nf4 (19.f3 Ne5 20.Nf4 Be6=+ (20...Nf3?! 21.Bf3 ef3 22.Rf3=+)) 19...Nh5 20.Qa4 (better is 20.Nh5!? Qh5 21.Bf6–/+) 20...Bd7–+ 21.Qa5 b5 22.Qc7 Nf4–+ 23.ef4 Qf4 0–1. Stankovic,Marija (2110) – Medvegy,Nora (2235), EU–ch U20 Girls, 1995.

6.Bc4 Qg6 7.g3? Nb6?? (better is 7...Qc6 8.Bf7 Kf7–+) 8.Be2= f6?? (better is 8...Bd6=) 9.Bh5+– Bg4 (9...Bf5+–) 10.Bg6 (10.Bg6 hg6 11.Qg4+–) 1–0. Fournier,Frederic (1710) – persijs (1730), ChessOK.com, 2012.

5.c4 c6

6.c5 Qc7 7.Nf3 g6 (7...b6 8.d4 e4 9.Nfd2=) 8.Ne5 (8.Be2 Bg7=) 8...Ne5 9.f4 f6 10.fe5 fe5 11.Be2 Bg7 12.Qb3 Nf6 13.Nc3 Be6 14.a4 (14.0–0 0–0=) 14...0–0+= 15.e4 (15.0–0 b6+=) 15...Qf7 16.Qc2 d4 17.0–0? (better is 17.Nd1–/+) 17...dc3–+ 18.Bc3 Qc7 19.h3 Nd7 20.d3 (20.Bb2 a5 21.Bc4 Bc4 22.Qc4 Kh8–+) 20...Rf1 21.Rf1 Rf8 22.Rb1 (22.Rf8 Nf8 23.Qd2 b6–+) 22...Bh6 23.Bd2 Bd2 24.Qd2 Qd8 25.Qe3 Qh4 26.Bf3 (26.b5 Rf4–+) 26...Bh3! 27.gh3 (27.Rf1–+) 27...Qg3 Theme: Double Attack (27...Qg3 28.Kh1 Qh3 29.Kg1 Rf3–+) 0–1. Eckhoff,Karlheinz – Neulinger,Manfred (2295), Finkenstein op, 1998.

6.d4 e4 7.f4 (7.Nc3 a6=) 7...Ndf6 8.c5 Qc7 9.Nc3 a6 10.Nge2 Ne7 11.Ng3 Bg4 12.Be2 Be2 13.Qe2 h5 14.0–0 h4 15.Nh1 Nf5 (15...h3 16.g3=) 16.Nf2 Be7 17.Na4 (17.a4 b6=) 17...0–0 (17...Nd7 18.Nh3+=) 18.Nb6= Rab8 19.Bc3 (19.Rfe1 Nd7 20.Nd7 Qd7=) 19...g6 (19...Bd8 20.Na4=) 20.Rfb1 Nd7 21.Nd7 Qd7 22.Ng4 f6 23.Bd2 Kg7 (23...Qe6 24.Nf2=) 24.a4 b5 (24...h3 25.g3=) 25.ab5 (25.Nf2 Qb7=) 25...ab5= 26.Ra5 Rfc8 (26...Rh8 27.Rba1+=) 27.Rba1 Rc7 28.Nf2 Rbb7 29.Bc1 (29.Nd1 Ra7+=) 29...Ra7 30.Qa2 Ra5 31.Qa5 Rb7 32.Qa8 Bd8 33.Bd2 Kf7 34.Nd1 (34.Qa2 Kg7=) 34...Kg7 35.Nc3 Ne7 (35...h3 36.gh3 Be7 37.Bc1=) 36.Ra2 Nc8 37.Be1 f5 38.Ne2 Ra7 39.Ra7 Na7 40.Nc1 Bf6 41.Nb3 Nc8 42.Na5 Ne7 43.h3 (43.Qb8=) 43...Kf7 (43...g5 44.fg5 Bg5 45.Bd2=) 44.Kh2 (better is 44.Nb7 Kg7 45.Nd6+/–) 44...Qc7?? (better is 44...Qe8 45.Qb7 Kg8=) 45.Nb7+– Nc8 46.Qc8!! (46.Qc8 Qc8 47.Nd6 Ke6 48.Nc8+–) 1–0. Babich,Mikhail – Ustinov,Aleksandr, 2007.

6.cd5 cd5 7.Nc3 a6 8.Qa4 Ngf6 9.Nb5 (9.d4 e4=) 9...Qb8+= 10.Nc3 Be7 11.Nf3 0–0 12.d4 e4 13.Nd2 b5 14.Qc2 Nb6 15.Nb3 Nc4 16.Bc4 bc4 17.Nc5 Bd6 18.h3 Qb6 19.N3a4 Qc6 20.Bc3 Bb8 21.Rb1 Ne8 22.Nb2 (22.f3 ef3 23.gf3 Nd6–/+) 22...Nd6 (22...Qg6 23.g3–/+) 23.a4 f5 24.g3 (24.0–0 Qc7 25.Rbc1 Nf7–/+) 24...Ra7 25.Qe2 Qe8 26.h4 g6 27.Kd2 h6 28.Rhg1 Rg7 29.Qd1 g5 30.hg5+= hg5 31.Qe2 Rh7 32.Rh1 Qg6 33.Rbg1 Rff7 34.Qf1 Rfg7 35.Rh7 Rh7 36.Rh1 Rh6 37.Rh3 f4 38.Rh6 fe3 39.fe3 Qh6 40.Kc2 Qh2 41.Bd2 Kg7 42.Na6?? Ba6–+ 43.b5 Bc8 44.b6 Qg3 45.a5 g4 46.Qa1 Ba6 47.Qa4 Nb5 48.Nd1 Qd6 49.Bb4 Qh2 50.Bd2 g3 51.Qb4 Bd6 52.b7 Bb4 (52...Bb4 53.Nf2 Na3 54.Kb2 Qf2 55.Ka1 Qf1 56.Be1 Qe1 57.Kb2 Qb1#) 0–1. Fischbach,Rainer (1660) – Reschke,Heiko (2050), Leipzig VfB op, 2004.

4.e3 Be6

5.b5 c5 6.a4 (6.Nf3 Nd7+=) 6...f6 (6...Nf6!?–/+) 7.d3 Qd8 8.Nd2 Bd6 9.c4 d4 (9...Ne7 10.Ngf3=) 10.ed4 (10.Qh5 Kf8+=) 10...ed4 (10...cd4 11.g3 Nd7 12.Bg2+=) 11.Ngf3 Nd7 12.Ne4 Bc7 13.Nfd2 (13.Ba3 Ne7=) 13...Qe7 (13...f5 14.Ng3–/+) 14.Be2 Ba5 (14...f5!? 15.Ng3 Ngf6+=) 15.0–0= Nh6 (15...f5 16.Ng3 Ngf6 17.Bf3+=) 16.Bf3 (16.Ba3!? Bd2 17.Qd2+/–) 16...f5 17.Ng3 0–0–0 (17...Ne5 18.Qe2 Nf3 19.Nf3=) 18.Ba3 (18.Nb3 Bb4+/–) 18...Bc7 (better is 18...Bc3!? 19.Ra2 Nf7=) 19.Nb3+/– Qd6 20.Re1 g5? (better is 20...Rde8+/–) 21.Nc5!+– Nc5 22.Bc5 Qc5 23.Re6 Rd6 (23...Nf7 24.Bd5 Rd5 25.cd5 Qd5 26.Qe2+–) 24.Qe2 Rhd8 (24...g4 25.Bd5 Kb8 26.Re7+–) 25.Re7 (better is 25.Re5 Qb4 26.Nf5 R6d7 27.Nh6 Be5 28.Qe5 Qe7+–) 25...R6d7 26.Rd7 Rd7 27.Qe8 Bd8 28.Qe6 (better is 28.Bb7 Rb7 29.Qe6 Kb8 30.Qh6+–) 28...Qd6 29.Bd5 Kb8 (29...Kc7 30.Re1+–) 30.Nf5 Nf5 31.Qf5 Re7 32.Be4 Qf4 33.Qd5 Ba5 34.Qd4 Rf7 35.g3 Qf6 36.Qf6 Rf6 37.Bh7 Bb6 38.Rf1 Bd4 39.Kg2 Kc7 40.f4 gf4 41.Rf4 Rf4 42.gf4 Kb6 43.Be4 a5 44.ba6! ba6 45.f5 Ka5 46.Bc6 Kb6 47.Be8 Kc7 48.h4 Kd6 49.Kf3 Ke5 50.Bd7 Bc5 51.h5 Bf8 52.a5 Bh6 53.Bc8 Bd2 54.Ba6 Ba5 55.Bc8 Bd2 56.Be6 Bc1 (56...Bc1 57.c5 Bd2 58.d4 Kd4+–). superyoyo (1665) – onny555 (1840), gameknot.com, 2010.

5.Bb5 c6 6.Ba4 (6.Be2 Nd7=) 6...Nd7+= 7.Ne2 Nb6 (7...a5 8.ba5 Ra5 9.Bb3+=) 8.Bb3= Ne7 9.d3 Ng6 10.0–0 Be7 11.Nd2 0–0 12.c4 dc4 13.dc4 c5 14.Bc3 (14.Qc2 Rfd8 15.Rfd1 a6+=) 14...Rfd8 15.Qc2 cb4 (15...Qc7 16.b5+=) 16.ab4= Qd3 c4 draws heavy fire 17.Qd3 Rd3 18.Bc2 Rdd8 19.c5 Nc4 20.Ne4 (20.Nc4 Bc4 21.Rfe1 Bd3 22.Bd3 Rd3+=) 20...f5 (better is 20...b6=) 21.Ng5?? (better is 21.N4g3 Rf8 22.e4+=) 21...Bg5–+ 22.Ng3 f4 23.ef4 Nf4 24.Be5 Ne5 (24...Ne5 25.Rfe1 Nc6–+) 0–1. Suutarla,Ari – Fritz,Bertil, IBCA–ol blind 4th fin–C, 1972.

5.Nc3 a6 6.Nf3 Nd7 7.Be2 g6 8.d4 e4 9.Nd2 Bh6 (9...Ngf6 10.f3 ef3 11.Bf3=) 10.Na4 (10.Nce4 de4 11.d5 Ndf6 12.de6 Qe6+/–) 10...f5 (10...Ngf6 11.c4=) 11.Nc5 b6 (11...0–0–0 12.b5 ab5 13.a4+/– (worse is 13.Ne6 Qe6 14.Bb5 f4=)) 12.Ne6 (12.c4!?+/–) 12...Qe6+= 13.c4 c6 (13...Ngf6 14.Qc2+=) 14.g3 (14.Rc1 f4 15.Bg4 Qe7 16.cd5 cd5+=) 14...Ne7 15.a4 (15.cd5 Nd5 16.Qc2 0–0=) 15...0–0 16.b5 (16.a5 b5 17.c5 Bg7=) 16...cb5 (16...ab5 17.ab5 cb5 18.cb5 Ra1 19.Qa1=) 17.ab5 ab5 Black gets strong initiative. 18.Ra8 Ra8 19.Qb3? (better is 19.cb5!? Nc8 20.0–0=) 19...bc4–/+ 20.Nc4 Kh8 (20...Qc6 21.Nd2–/+) 21.Nd2 Nc6 22.0–0 Na5 23.Qb5 Rc8 24.Rc1 Rc1 25.Bc1 Bf8 26.Nb3 Nb3 27.Qb3 Qc6 (27...Qd6 28.Qb5+=) 28.Ba3+= ½–½. Bott,Hans Joachim – Heiduk,Christoph, Wuerzburg, 1987.

5.d3 Ne7 6.Nd2 Ng6 (6...a5 7.Ngf3 f6 8.b5=) 7.c4 c5 (7...a5 8.Ngf3 f6 9.c5=) 8.cd5 (8.bc5 Qc5 9.d4 Qb6 10.Qa4 Nc6=) 8...Bd5 (8...Qd5 9.bc5 Bc5 10.Ngf3=) 9.bc5 Qc5 10.Rc1 Qb6 11.Rc8 Kd7 12.Rc2 Nc6 13.Ngf3 Bd6 (13...Ke8 14.d4 Qa5 15.Rc3 ed4 16.Nd4 Nd4 17.ed4=) 14.e4 (14.d4 Qa5 15.de5 Nce5+/–) 14...Be6= 15.Ng5 (15.Nc4 Bc4 16.dc4 Ke8=) 15...h6 (15...Bc5!? 16.Nc4 Bc4 17.dc4 Ke8=) 16.Ne6+= Ke6 17.Nc4 Qd8 18.g3 (18.Be2 Nf4 19.Bg4 Ke7+=) 18...Ke7 19.Ne3 (19.f4 Nd4 20.Bd4 ed4+/–) 19...Re8 20.Bg2 Kf8 21.0–0 Rc8 (21...Kg8 22.Qa1=) 22.Bh3 Rb8 23.Nf5 (23.Bf5 Nge7=) 23...Nce7 (23...Nge7 24.Nd6 Qd6 25.f4 ef4 26.Rf4+=) 24.Ne3 (24.d4 Nf5 25.Bf5 Kg8+/–) 24...Nc6 25.Bf5 Nge7 26.Qc1 (26.Qf3 Kg8=) 26...Nf5 (26...Nd4!? 27.Bd4 ed4+=) 27.Nf5+= Ne7 28.Nd6 Qd6 29.Qe3 Nc6 30.Rfc1 (30.f4 Rbd8 31.Rd2 Nd4+=) 30...Rbd8 31.Rc3 Kg8 32.Rb3 (32.f4 f6=) 32...Rd7 33.Kg2 (33.f4 ef4 34.gf4 f5=) 33...Red8 34.Rbc3 (34.f4 ef4 35.gf4 f5+=) 34...f6 (34...Qg6 35.Kh1+=) 35.Qf3 (35.f4!?=) 35...Nd4 36.Qh5 (36.Qe3 Qb6 37.Rb1 Qe6+=) 36...Kh7 (36...Qb6 37.Rb1–/+) 37.Qg4 (37.Rc8 Rc8 38.Rc8 Nc6+=) 37...Qe6 (37...Qb6 38.Rb1+=) 38.Qd1 (38.Qe6 Ne6 39.Rd1 Nd4+=) 38...Nc6 (38...Qb6 39.Rb1–/+) 39.Qf3 (39.Qe2 Rd6+=) 39...Nd4 40.Qe3?? (better is 40.Qd1=) 40...Qa2–+ 41.Ba1 Qe2 (41...Nb5 42.R3c2 Qa3 43.Qf3–+) 42.Rc7? (better is 42.Rb1 Qe3 43.fe3–/+) 42...Qe3–+ 43.fe3 Nb3 44.Rd7 Rd7 45.Rb1 (45.Rd1 Na1 46.Ra1 Rd3–+) 45...Na1 (better is 45...Rd3!? 46.Kf3–+) 46.Ra1 Rd3 47.Kf3 b6 (47...b5 48.h3–+) 48.h4 (48.Ke2 Rc3 49.h3 Rc2 50.Kf3 Kg6–+) 48...h5 49.a4 Rd2 (49...Rb3 50.Ra2–+) 50.a5 (50.g4 hg4 51.Kg4 Rc2–+) 50...b5 (50...Rb2 51.g4–+) 51.Rb1 (51.a6–+) 51...b4 0–1. Heinrichs,R (1795) – Kurzweg,Jonas, Sparkassen Open, Nettetal GER, 2010.

5.d3 Nf6 6.Nf3 Nbd7 7.Qd2 +=.

5.d4 ed4 6.ed4 (6.Bd4 Nc6=) 6...Nf6 7.Nf3 Be7 (7...a5 8.b5=) 8.Bd3 0–0 (8...a5 9.b5=) 9.0–0 Re8 10.Ne5 (10.Re1 a5 11.b5 Nbd7=) 10...a5 11.b5 c6 12.Nd2 (12.Re1 cb5 13.Bb5 Nc6=) 12...c5 (12...Nbd7 13.bc6 bc6 14.Re1=) 13.dc5+= Qc5 (13...Qc7 14.Re1+=) 14.Re1 Nbd7 15.Nd7 (15.Ndf3 Qb6=) 15...Bd7 16.Nb3 Qb6 (16...Qc7 17.Be5 Bd6 18.Bf6 Re1 19.Qe1 gf6 20.Kh1=) 17.Bd4+= Qd8 (17...Qc7 18.b6 Qc6 19.Qd2+=) 18.a4 b6 (18...Qc7 19.Be5 Bd6 20.Bf6 Re1 21.Qe1 gf6 22.h3+=) 19.Qf3 Rc8 20.h3 Be6 21.Re2 Nd7 (21...Ne4 22.Be4 de4 23.Qe4+=) 22.Rae1 Bf6 23.c3 (23.Bf6 Nf6 24.Qf4 Nd7+=) 23...Qc7 24.Bf6 (24.Re3 h6+=) =. Woschkat,Karl_Heinz (1680) – Santistevan,Ovidio, IECG, 1998.

5.d4 Nd7 6.de5 Ne5 7.Nf3 Nd7 (7...Nf3 8.gf3 b6 9.h4=) 8.Nbd2 Ngf6 9.c4 c6 10.cd5 cd5 (10...Qd5 Not 11.Bc4 Qh5 12.Qe2+=) 11.Qa4 Be7 12.Be5 White threatens to win material: Be5xd6 12...Qb6 13.Rc1 White inhibits 0–0–0 13...Bd6 (better is 13...0–0!? deserves consideration 14.Bd4 Qd6=) 14.Bf6+/– gf6 Black has the pair of bishops 15.Nd4 The knight feels good on d4 15...Ke7 16.f4 (better is 16.Bd3!?+/–) 16...Bf4+= 17.Qb3 (17.Kf2 f5 18.N2f3 Ne5–/+) 17...Bh6 (17...Rhc8 18.Rd1=) 18.Be2 (18.N2f3 a5=) 18...Ne5 (18...Rhc8 19.Kf2+=) 19.Kf2 White loses the right to castle (19.Rc5 Rhc8 20.Qc3 a5–/+) 19...Rhg8 20.Rc5 (20.Rhd1 Ng4 21.Bg4 Rg4= (worse is 21...Bg4 22.Qd5 Be3 23.Ke3+/–)) 20...Rad8 21.Qc2 White threatens to win material: Qc2xh7 21...Rg6 22.a4 Kf8 23.Rc1 Re8 24.Rb5 Qd6 25.Rb7?? Nc4–+ 26.Nc4 dc4 27.Ne6 Re6 28.Kg1 Be3 29.Kh1 Bc1 30.Rf7 Kf7 31.Bc4 Bf4 32.Qe2 Ke7! Mate threat 33.Be6 Qe6 34.Qf2 Qe3 35.Qe3 Be3 36.b5 Rg4 37.g3 Ra4 38.Kg2 Rb4 39.Kf3 Bg1 40.h4 Rb5 0–1. Danek,Vaclav (1870) – Muk,Ivo (1940), Klatovy op–B, 2001.

5.d4 f6 6.Nd2 (6.de5 Qe7+/–) 6...c6 (6...Nd7 7.c4=) 7.c4 ed4 8.ed4 Ne7 9.c5 Qc7 10.Ngf3 Nd7 11.Bd3 Bf5 12.Bf5 Nf5 13.0–0 h5 14.Qc2 Nh6? (14...g6 15.Rfe1 Be7 16.Qd3+/–) 15.h3?? (15.Qg6 Nf7 16.Rae1 Be7 17.Qg7+–) 15...0–0–0+= 16.a4 g5 17.Nh2 g4 18.Ra3 f5 19.Re1 Nf6 20.b5 Ne4 21.Ne4 fe4 (21...de4 22.d5 Rg8 23.d6 Rd6 24.b6 ab6 25.cd6 Bd6 26.Ng4 hg4 27.Rb3=) 22.Qe2 Rg8 23.bc6 Qc6 24.a5 gh3 25.Rh3 Ng4 26.Rh5 Nf6 27.Rh3 Rd7 28.Nf1 Rdg7 29.Rg3 Rg3 30.Ng3 Ng4 31.f3 Qc7 32.Nf1 (32.fg4?! Qg3 33.a6 Qg4 34.ab7 Kb7 35.Qg4 Rg4=) 32...Nf6 33.fe4 Ne4 34.Nd2 Rh8 35.Ne4 de4 36.Qe4 Qa5?? (36...Bg7+–) 37.Qf5 Kd8 38.Qf6 Kd7 39.Qf7 (39.Qh8?! Qe1 40.Kh2 Qe7+/–) 39...Kc6 40.Re6 (40.d5 Kc5 41.Rc1 Kb5 42.Qf1 Kb6 43.Bd4 Bc5 44.Qf6 Kc7 45.Qe7 Kb8 46.Qe5 Qc7 47.Qh8 Qc8 48.Qe5 Ka8 49.Rc5 Qd8 50.Qe6 b6 51.Qc6 Kb8 52.Be5 Qc7 53.Qc7 Ka8 54.Qc6) 40...Kb5 (40...Bd6 41.Rd6 Kb5 42.Qb7 Kc4 43.Qd5 Kb4+–) 41.Qb7 Kc4 42.Re3 Bc5 43.Qb3 1–0. Loulou – Zdrak, HCL–A1182 playchess.de, 2003.

5.Be2 a5 6.Nf3 f6 (6...Nd7 7.Nc3 c6 8.b5=) 7.Nc3 (7.b5 Ne7=) 7...Nh6 8.0–0 Be7 9.Nb5 (9.b5 0–0=) 9...Qd8 (9...Qd7=+) 10.d4 (10.Ne5 ab4 11.Nd3 ba3+=) 10...c6 (10...e4 11.Nd2–/+) 11.Nc3 (11.de5 cb5 12.Nd4 Qc8 13.Ne6 Qe6 14.ef6 Bf6 15.Bf6 gf6=+) 11...e4 (11...ab4 12.ab4 Ra1 13.Qa1=+) 12.Nd2 0–0 (12...ab4 13.ab4 Ra1 14.Qa1 Bb4 15.Ba3 Ba3 16.Qa3=+) 13.b5= f5 (13...Bd6 14.bc6 bc6 15.Rb1=) 14.a4 (14.Nb3 Nd7=) 14...f4=+ 15.Kh1 (15.ef4 Rf4 16.Nb3 Bd6=) 15...Bd6 (15...Nf5 16.Bg4–/+) 16.Ba3=+ f3 (16...Bb4!? 17.Bb4 ab4=+) 17.gf3= Bh2? (17...Bb4 18.Bb4 ab4 19.Ncb1=) 18.Kh2?? (18.Bf8 Bc7 19.f4 Qh4 20.Kg1 Kf8 21.Rb1+=) 18...Qh4= 19.Kg1 Rf5?? (better is 19...Qg5 20.Kh1 Qh4 21.Kg1 Qg5 22.Kh2 Qh4 23.Kg1=) 20.f4+– Rf6 21.Nce4 de4+= 22.Be7 Rg6= 23.Bg5 Nf7 24.Ne4?? Bd5?? 25.Ng3= Ng5 26.fg5 Rg5 27.Bf3 Nd7 28.Kg2 Bf3 29.Qf3+/– Rf8 30.Qe2 Qe4= 31.f3 Qg6=+ 32.Qf2 Nf6–/+ 33.Kh2? Ne4!–+ 34.fe4 Rf2 35.Rf2 Rg3 36.Raf1 h5 (37.Rf8 Kh7–+) 0–1. Simon,Gerard – Ribaud Chevrey,P, Paris op, 1993.

5.Be2 c6 6.Nf3 Nd7 7.d3 h6 Secures g5 8.Nbd2 Ngf6 9.c4 Be7 10.Rc1 (10.cd5 A) worse is 10...Nd5 11.Nc4 Qb8 12.Nce5+/– (12.Be5?! Ne5 13.Nce5 Nb4=); B) 10...Bd5 11.Nc4 Bc4 12.dc4 Qe6=) 10...0–0 (10...a5 11.ba5 dc4 12.dc4=) 11.0–0 (11.c5 Qc7=) 11...a6 (11...a5 12.cd5 cd5 13.ba5 Ra5 14.Nb1=) 12.Rc2 (12.cd5 A) 12...Nd5 13.Nc4 Qb8 14.Be5 Ne5 15.Nfe5+/– (15.Nce5?! a5=); B) 12...Bd5?! 13.Nb3=; C) 12...cd5 13.Qc2 Bd8=) 12...Nh7 (12...a5 13.ba5 e4 14.Bf6 Nf6 15.c5+=) 13.Qa1 Bf6 14.cd5 cd5 (14...Bd5 15.Rd1=) 15.Rfc1 Ng5 (15...Rfb8 16.Ne1+=) 16.Ne5 Nh3 17.gh3 Be5 18.Be5 Ne5 19.f4 White threatens to win material: f4xe5 19...Nc6 20.Bf1 Qd7 (20...d4 21.Ne4 Qb8 22.Ng3+=) 21.h4 (21.Nb3 Qe7+=) 21...Bh3 22.Nf3 (22.Kh1 Rfe8 23.Bh3 Qh3+=) 22...d4 (22...Qg4!? must be considered 23.Bg2 Rac8=) 23.Nd4+= Nd4 24.Qd4 Qd4 25.ed4 Bf1 26.Kf1 A double rook endgame occured 26...Rfd8 Black threatens to win material: Rd8xd4 27.Kf2 Rd4 28.Rc8 Rc8 29.Rc8 Kh7 30.Ke3 White threatens to win material: Ke3xd4 30...Rd7 31.h5 Rd5 Black threatens to win material: Rd5xh5 32.Rc5 White threatens to win material: Rc5xd5 32...Rd7 33.Ke4 g6 34.hg6 fg6 35.d4 Kg7 36.Re5 Kf7 37.d5 Rc7 38.d6+– Rc2 39.Re7 Kf6 40.Rb7 Rh2 41.Kd5 Rd2 42.Kc6 Rc2 43.Kd7 g5?! instead of fighting back 44.Rc7 Rd2 45.fg5 hg5 46.Rc1 Rd3 47.Kc7 Ke6 48.Re1 Kf7 49.Re5 Kf6 50.Rc5 g4 51.d7 Ke7 52.Re5 Kf6 53.Re8 1–0. Doncea,Vladimir (2105) – Madan,Augustin (2160), ROM–ch sf U16, 2002.

5.Be2 Nd7 6.Nf3 (--> 5.Nf3 Nd7 6.Be2).

5.Ne2 Nd7 6.d4 e4 (6...f6 7.Ng3=) 7.Nd2 f5 (7...Ngf6 8.c4=) 8.c4 (8.Nf4 Bf7=) 8...c6 (8...dc4 9.Nc3 Nb6 10.Na4=) 9.Nc3 (9.c5 Qc7+=) 9...a6 (9...Ngf6 10.c5 Qc7 11.Ne2=) 10.c5 Qc7 11.g3 (11.Qh5 g6 12.Qh3 Ngf6=) 11...Ngf6 12.Be2 g6 13.Nb3 (13.Qa4 h6=) 13...Bh6 Black prepares the advance f4 (13...h5 14.h4=) 14.h4 0–0 15.Qc2 Be3 (15...Ng4 16.h5 Be3 17.Bg4 fg4 18.fe3 Qg3 19.Kd1 Qe3 20.Ne2 gh5 21.Bc3–/+) 16.fe3= Qg3 17.Kd2 f4 18.Rag1?? (better is 18.ef4 Qf4 19.Ke1 Qg3 20.Kd2 Qf4 21.Ke1 Qg3 22.Kd2 Qf4=) 18...Qe3–+ 19.Kd1 f3 20.Bc1 fe2 21.Ne2 Qd3 22.Qd3 ed3 23.Nf4 Bg4 24.Kd2 Ne4 (24...Ne4 25.Kd3 Nf2 26.Ke3 Rf4 27.Kf4 Rf8 28.Kg3 Rf3 29.Kg2 Ne4–+) 0–1. Massana,Jorge – Anderson,Renard (2380), New York op, 1985.

5.Nf3 f6 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 f6 5.e3 Be6).

5.g3 Be7 6.Bg2 (6.f4 Nd7+=) 6...c6 (6...Nf6 7.c4 c6 8.Nf3+=) 7.Ne2 Bf6 8.d3 (8.0–0 a5+=) 8...h5 9.Nd2 Ne7 (9...h4 10.c4=) 10.c4 Qd7 (10...h4 11.cd5 cd5 12.Rc1=) 11.f4 (11.cd5 cd5 12.e4 d4=) 11...ef4 (11...Nf5 12.Nf1 (12.Be5?? Ne3 13.Qb3 Ng2 14.Kf2 dc4 15.Nc4 Be5 16.fe5 Bd5–+) 12...dc4 13.fe5=) 12.Bf6= fe3 13.Bg7 ed2 14.Qd2 Rg8 15.Bf6 (15.Be5 dc4 16.Nf4 Na6 17.Nh5 0–0–0+/–) 15...dc4= 16.Nf4 Nd5 (16...cd3!? 17.Nh5 Rg6+/–) 17.Bd5+/– Bd5?? (better is 17...cd5 18.Nh5 Rg6+/–) 18.Qe3+– Be6 19.dc4 (19.Ne6?! Qe6 (worse is 19...fe6 20.dc4 Qf7 21.0–0+/–) 20.Qe6 fe6 21.dc4 Nd7=) 19...Na6 20.Rd1 Qc8 21.Rd8 (better is 21.b5!? cb5 22.cb5 Qc5+–) 21...Qd8 22.Bd8 Rd8 (22...Kd8 23.Ne6 fe6+–) 23.Ne6 fe6 (23...Rd6 24.Nc5 Kf8 25.Qf4+–) 24.0–0 (24.Qe6 Kf8 25.Rf1 Kg7 26.Rf7 Kh8 27.Qh6) 24...Rc8 (24...Ke7 25.Qh6 Rdf8 26.Qh7 Kd8 27.Rf8 Rf8 28.Qb7 Nb4 29.ab4 Rf5+–) 25.Qe6 1–0. Faugno,R – Ventura,Franco, Bologna op, 1987.

5.Nc3 c6

6.Nf3 f6

7.Be2 Nd7

8.0–0 Ne7

9.d3 0–0–0 10.Rb1 A) 10...h5 11.b5 (11.Qd2 g5 12.b5 g4 13.bc6 Qc6 14.Nh4 Bg7 15.a4 Kb8 16.Ba3; 11.h4 g6 12.b5 Bg7 13.a4 Kb8 14.a5 cb5 15.Nb5 Qc6 16.Qd2; 11.Qe1 g5 12.Qd2 Bh6 13.b5 g4 14.Nh4 Bg5 15.bc6 Qc6 16.g3; 11.Re1 g5 12.b5 g4 13.Nh4 Bh6 14.a4 Bg5 15.g3 Bh4 16.gh4) 11...g5 12.d4 e4 13.Nd2 h4 14.h3 Nf5 15.Nb3 Be7 16.Qd2; B) 10...g6 11.b5 (11.h3 a6 12.Bc1 Bh6 13.a4 Kb8 14.b5 cb5 15.ab5 a5 16.Ra1; 11.Re1 a6 12.Bc1 Bh6 13.a4 Kb8 14.b5 cb5 15.ab5 a5 16.Bd2; 11.Qd2 a6 12.Na4 g5 13.h3 Nf5 14.Qc3 Kb8 15.d4 e4 16.Nd2; 11.Qe1 a6 12.Bc1 Bg7 13.a4 Nf5 14.Bd2 h5 15.b5 ab5 16.ab5) 11...Bg7 12.h3 h5 13.a4 g5 14.Nd2 g4 15.bc6 Qc6 16.hg4; C) 10...g5 11.b5 (11.h3 h5 12.Nd2 f5 13.b5 g4 14.h4 Bg7 15.bc6 Nc6 16.Nb5) 11...g4 12.bc6 Nc6 13.Nd2 f5 14.Nb5 Qe7 15.c4 a6 16.cd5.

9.d3 0–0–0 10.Qd2 A) 10...g6 11.h3 (11.b5 Nf5 12.a4 Kb8 13.Rab1 Bh6 14.Rfe1 c5 15.a5 d4 16.Ne4; 11.Rae1 Kb8 12.b5 Nf5 13.g4 Ne7 14.g5 Bh3 15.bc6 Nc6 16.gf6; 11.Rfd1 Nf5 12.b5 Kb8 13.a4 Bh6 14.Qe1 Nc5 15.d4 ed4 16.Nd4; 11.Rfe1 h5 12.b5 Nf5 13.h3 Kb8 14.Rab1 Bh6 15.Qd1 cb5 16.Nb5) 11...Nf5 12.b5 Bg7 13.e4 Bh6 14.Qe1 Ne7 15.bc6 Qc6 16.d4; B) 10...g5 11.h3 (11.b5 g4 12.Nh4 Ng6 13.Ng6 hg6 14.f3 gf3 15.Rf3 Bg7 16.Rg3) 11...h5 12.Nh2 Bg7 13.b5 Kb8 14.bc6 Qc6 15.Rab1 Nf5 16.Rfe1.

9.d3 0–0–0 10.h4 A) 10...g6 11.Rb1 (11.Qd2 a6 12.Rfd1 h5 13.Na4 Bh6 14.Qc3 Bg4 15.Nc5 Nf5 16.Re1; 11.Rc1 Bh6 12.b5 Nf5 13.Rb1 Qc7 14.a4 Kb8 15.a5 cb5 16.Nb5; 11.b5 cb5 12.Qd2 a6 13.Rfe1 Bg7 14.Rab1 Kb8 15.Red1 h5 16.Rf1; 11.Qe1 Kb8 12.b5 Bg7 13.Qd2 Nc5 14.d4 Ne4 15.de5 Nd2 16.ed6) 11...a6 12.Bc1 Bh6 13.a4 Kb8 14.b5 cb5 15.ab5 a5 16.Bd2; B) 10...Kb8 11.b5 (11.Qd2 g6 12.b5 Nf5 13.a4 Bh6 14.Rab1 c5 15.Qe1 d4 16.Ne4; 11.Qe1 g6 12.b5 Bg7 13.Qd2 Nf5 14.e4 Bh6 15.Qe1 Ne7 16.d4; 11.Rb1 a6 12.Bc1 Qc7 13.a4 Nf5 14.Bd2 d4 15.ed4 ed4 16.Ne4; 11.Re1 g6 12.b5 h5 13.a4 Bg7 14.Ba3 c5 15.a5 f5 16.a6) 11...g6 12.Rb1 h5 13.Re1 Bg7 14.a4 Qb4 15.Ba1 Qd6 16.a5; C) 10...Nb6 11.b5 (11.Qd2 Kb8 12.b5 Nf5 13.a4 d4 14.ed4 Nd4 15.Nd4 Qd4 16.bc6) 11...Kb8 12.Qd2 Nf5 13.a4 d4 14.ed4 Nd4 15.Nd4 Qd4 16.bc6; D) 10...h5 11.Qd2 (11.Rb1 g6 12.b5 Bg7 13.a4 Kb8 14.Re1 Qc7 15.Qd2 c5 16.Ra1; 11.Re1 g6 12.Qd2 a6 13.Rf1 Nf5 14.e4 Nd4 15.ed5 cd5 16.Nd1; 11.Qe1 a6 12.Qd2 g6 13.Rfe1 Rh7 14.Na4 Kb8 15.Nc3 Nb6 16.Reb1) 11...g6 12.b5 Nf5 13.a4 Kb8 14.Rab1 Bh6 15.Qd1 Qc7 16.bc6.

9.d3 Kf7 10.Qd2 A) 10...g6 11.Nh4 (11.h4 Bh6 12.h5 Nf5 13.Nh2 Bg5 14.Nf3 Bh6 15.Nh2 Bg5 16.Nf3; 11.Na4 Bh6 12.Qc3 Kg7 13.Nc5 Nc5 14.bc5 Qc7 15.h3 b6 16.g4; 11.b5 Bh6 12.a4 Nf5 13.a5 Qc7 14.Qd1 Rab8 15.h3 Nd6 16.d4; 11.Rab1 Bh6 12.Nh4 Kg7 13.h3 a5 14.b5 Qc5 15.bc6 Nc6 16.Ba1) 11...Bh6 12.f4 Kg7 13.Rae1 Nf5 14.Nf5 Bf5 15.d4 e4 16.b5. B) 10...Re8 11.Nh4 (11.h4 Nb6 12.h5 Nf5 13.e4 Nd4 14.ed5 Ne2 15.Qe2 cd5 16.Rfe1; 11.Rfe1 Ng6 12.h3 Be7 13.Rac1 Rhf8 14.Rcd1 Kg8 15.b5 f5 16.bc6) 11...g6 12.f4 Nf5 13.Nf5 Bf5 14.g4 d4 15.gf5 dc3 16.Bc3; C) 10...Ng6 11.b5 (11.h3 Be7 12.Rab1 Rhe8 13.b5 Kg8 14.a4 a6 15.bc6 Qc6 16.h4; 11.Ra2 Be7 12.h3 Rhe8 13.Raa1 Kg8 14.Rfe1 f5 15.Na4 Bf6 16.c4; 11.h4 Bg4 12.Nh2 Be2 13.Qe2 Nh4 14.Qh5 Ng6 15.Nf3 Qe6 16.Nh4; 11.Rfe1 Be7 12.g3 Rhe8 13.Bf1 Kg8 14.Bg2 a5 15.b5 Qc7 16.h4) 11...cb5 12.Nb5 Qc6 13.Nc3 Be7 14.h4 h5 15.Rfe1 Bg4 16.e4.

9.d3 Kf7 10.h3 A) 10...Ng6 11.b5 (11.h4 h5 12.Qd2 Be7 13.g3 Qc7 14.Kg2 a5 15.b5 Nc5 16.a4; 11.Qe1 a5 12.b5 cb5 13.Nb5 Qc6 14.Nc3 Ra6 15.a4 Bb4 16.d4; 11.Qd2 Be7 12.Rfe1 Rhe8 13.h4 Bg4 14.b5 Kg8 15.bc6 bc6 16.Rab1; 11.Re1 Be7 12.Rb1 a5 13.b5 Rhe8 14.h4 h5 15.Qd2 Kg8 16.a4) 11...cb5 12.Qd2 Qc6 13.h4 h5 14.Rfc1 b4 15.Nd1 a5 16.Rcb1; B) 10...g6 11.h4 (11.Nh4 Bh6 12.Bg4 f5 13.Bf3 Nf6 14.Be2 a5 15.Nf3 ab4 16.ab4; 11.Qd2 Bh6 12.a4 Kg7 13.Rfe1 f5 14.d4 e4 15.Ne5 Rhf8 16.Nd7; 11.b5 Bh6 12.a4 Kg7 13.Re1 Qb4 14.Rb1 c5 15.Ba1 Qa5 16.Nd2; 11.Na4 Bh6 12.c4 Kg7 13.Qb3 Nf5 14.c5 Qe7 15.Qc2 Qf7 16.Bd1) 11...Bh6 12.h5 a5 13.b5 Nf5 14.Rb1 Kg7 15.e4 Nd4 16.bc6.

9.d3 Kf7 10.Nh4 A) 10...g5 11.Nf3 (11.Bh5 Kg7 12.Nf3 Ng6 13.h3 a5 14.b5 Be7 15.Rb1 Rab8 16.Qe2) 11...a5 12.b5 Bg7 13.Rb1 h5 14.Qd2 g4 15.Nh4 Ng6 16.bc6; B) 10...g6 11.Qd2 (11.f4 Bh6 12.Qd2 Kg7 13.d4 e4 14.b5 Rhf8 15.bc6 Qc6 16.a4; 11.h3 Bh6 12.Qd2 Kg7 13.Rab1 a5 14.b5 Qc5 15.Nf3 Qb6 16.bc6; 11.Bf3 Bh6 12.Qd2 Kg7 13.Be2 g5 14.Nf3 g4 15.Ne1 Rhf8 16.Rd1; 11.Na4 Bh6 12.c4 Kg7 13.c5 Qc7 14.Qb3 Rhe8 15.h3 b5 16.Nc3) 11...Bh6 12.h3 Kg7 13.Rfe1 a5 14.b5 Nc5 15.d4 ed4 16.Qd4.

9.d4 e4 10.Nd2 g6 (10...Qc7 11.Na4=) 11.f3 (11.Na4 0–0–0+=) 11...f5 (11...Nf5!? 12.Qc1 Bh6+=) 12.fe4= fe4 (better is 12...Bh6!? 13.ed5 Be3 14.Kh1 cd5+=) 13.Nce4+/– de4 14.Ne4 (better is 14.d5!? Nd5 A) 15.Bh8?! Ne3 16.Ne4 Qd1 (16...Nd1? 17.Nd6 Bd6 18.Rad1+–) 17.Rad1 Nd1 18.Rd1 Bf5=; B) 15.Ne4+/–) 14...Qc7= 15.Ng5 (better is 15.d5 Bd5 16.Bh8 Be4 17.c4=) 15...Bg8?? (better is 15...Bd5 16.Bd3 Bh6+=) 16.d5+/– Nd5 (16...cd5 17.Bh8) 17.Bh8 (17.Qd4 Bd6 18.Qh8 0–0–0+=) 17...Ne3 (17...Be7 18.Nf3 Ne3 19.Qd3 Nf1 20.Rf1+=) 18.Qd4 (18.Rf8 Nf8 19.Qd3 Qf4+/–) 18...Nf1+= 19.Rf1 Qb6 20.Bg4 Qd4 21.Bd4 0–0–0? 22.Ba7 Kc7 23.Ne6 Be6 24.Be6 Ne5 25.Bf2 Bd6 26.Bg3 Re8 27.Bb3 Re7 28.c4 Nd7 29.Bd6 Kd6 30.c5 Kc7 31.Rf7 Re3 32.Bc4 Kd8 33.Rh7 Ra3 34.Be6 Nf8 35.Rh8 Ke7 36.Bh3 Ra8 37.Kf2 b6 38.cb6 Rb8 39.Rh4 Rb6 40.g3 Rb5 41.Re4 Kd8 42.Rc4 Kc7 43.Bg2 Rb6 44.Ke3 Nd7 45.Kf4 Kd6 46.Rc6 Rc6 47.Bc6 Kc6 48.Kg5 Ne5 49.h4 (49.h4 Kd5 50.b5+–) 1–0. Piszcz,Kazimierz – Rosinski,Zenon, corr 1. AMM Poland, 1991.

9.d3 g6=

10.Na4 Kf7 11.c4 (11.h4 Bh6 12.c4 Kg7 13.c5 Qc7 14.Qc2 a5 15.Bc3 ab4 16.ab4; 11.h3 Bh6 12.c4 Kg7 13.c5 Qc7 14.Qb3 Rhe8 15.Qc2 Nf5 16.g4; 11.Qd2 Bh6 12.Qc3 Kg7 13.Nc5 Nc5 14.bc5 Qc7 15.h3 Rhf8 16.a4; 11.Nh4 Bh6 12.c4 Kg7 13.c5 Qc7 14.h3 Rhe8 15.Qc2 Nf5 16.Nf5) 11...Bh6 12.Qc2 Kg7 13.c5 Qc7 14.h3 Nf5 15.Nc3 a5 16.g4.

10.Na4 Bg7 11.c4 (11.e4 0–0 12.c4 d4 13.Qb3 b5 14.c5 ba4 15.Qc4 Bc4 16.cd6; 11.h3 0–0 12.c4 Rfe8 13.Nc3 a5 14.Qb3 ab4 15.ab4 Nf5 16.Rfc1; 11.Qd2 0–0 12.c4 Nf5 13.g4 Ne7 14.h3 h5 15.cd5 Nd5 16.gh5; 11.Rb1 0–0 12.c4 a5 13.c5 Qc7 14.Bc3 d4 15.ed4 Nd5 16.Qc2) 11...0–0 12.Nc3 (12.c5 Qc7 13.Qb3 Rfe8 14.Qc2 Nf5 15.h3 b5 16.Nc3) 12...Kh8 (12...Nf5 13.h3= (13.cd5 cd5 14.e4 Ne7 15.Rc1 Bh6 16.Rc2) 13...a5 14.Qb3 b6 15.cd5 cd5 16.d4; 12...a5 13.Qb3 Nf5 14.h3 Rfd8 15.g4 Nh6 16.cd5) 13.Rc1 (13.Qc2 Kg8 14.h3 a5 15.c5 Qc7 16.Qb3) 13...f5 (13...a5 14.b5= Nc5 15.bc6 bc6 16.cd5) 14.c5 Qc7 15.e4 (15.d4!?+= h6 16.de5) 15...d4 (15...Bh6 16.ed5) 16.Nb1 (16.Ng5+=) 16...Nf6 (16...Bh6 17.Nbd2+=) 17.Nbd2 Rad8 (17...Bh6 18.h4+=) 18.Ng5= Bg8 19.f3 (19.Qc2 h6 20.Ngf3 Be6=) 19...h6 (19...Nh5 20.Nc4+=) 20.Nh3= g5 (20...Be6 21.Nc4=) 21.Nc4+= Bc4 (21...Be6 22.Nd6=) 22.Rc4 Qd7 23.Nf2 (23.Rc1 fe4 24.fe4 Ng6+=) 23...Rg8 (23...Nh5 24.Re1+=) 24.Kh1 (24.Qd2 Rgf8+=) 24...Nh7 (24...Nh5 25.g3 Nf6 26.Qa4+=) 25.g3 (25.Qb3 Nf8+=) 25...Bf6 (25...Nf6 26.Qb3+=) 26.Rg1 Nf8 27.Qf1 (27.ef5 Nf5 28.Rc1 Ne3+=) 27...Nfg6 (27...Kg7 28.Qh3+=) 28.Bc1 (28.Qh3 Kg7 29.Qh5 Qe6+/–) 28...Qe6 (28...Kg7 29.ef5 Nf5 30.Ne4=) 29.Qh3+/– Kh7 30.Qh5 Nh8 (better is 30...Kg7+/–) 31.Qh3 (31.Bd2 Nhg6+/–) 31...Nf7 (31...Nhg6 32.Bd2 Kg7+/–) 32.Bd1 (32.Bd2 Rge8+/–) 32...Qd7 (32...b5 33.cb6 ab6 34.ef5 Nf5 35.Bb3+/–) 33.Bb3 Rgf8 (33...Rg6 34.Rc2 Rf8 35.Kg2+/–) 34.Rc2 Kg7 35.a4 fe4 (35...Rb8 36.Bd2+–) 36.Be6 Qc7? (better is 36...Qe8 37.Ne4 Nd5+–) 37.fe4 Ng6 (37...Ng8 38.Rf1 Qe7 39.Bc4+–) 38.Ng4 Rh8 (38...Rde8 39.Bc4 Qc8+–) 39.Rf2 h5 (39...Rdf8 40.Nf6 Nd8 41.Nh5 Kh7+–) 40.Nf6 g4 (40...Rdf8 41.Nh5 Rh5 42.Qh5 Rh8+–) 41.Nh5 Rh5 42.Qh5 1–0. Burns,Christopher John – Bennett,Hilton (2090), 112th ch–NZL, Wanganui NZL, 2005.

10.Na4 Bh6 11.Nc5 (11.c4 0–0 12.c5 Qc7 13.Qc2 Nf5 14.e4 Ne7 15.h4 d4 16.h5; 11.h3 0–0 12.c4 Rfe8 13.Nc3 Nf5 14.Qb3 Kg7 15.Rfe1 Rad8 16.Rad1; 11.g3 0–0 12.c4 Rfe8 13.Nc3 a5 14.Qb3 Nf5 15.Rfe1 Kg7 16.g4; 11.h4 0–0 12.c4 Rae8 13.h5 gh5 14.Qc2 Rf7 15.d4 e4 16.Nh2) 11...Nc5 12.bc5 Qc7 13.h3 0–0 14.Qe1 Rab8 15.Qb4 b6 16.Rab1.

10.b5 Bg7 11.h4 (11.Qd2 0–0 12.h4 a6 13.bc6 Nc6 14.a4 Rfe8 15.Ba3 Qc7 16.h5; 11.h3 0–0 12.Qd2 a6 13.bc6 bc6 14.Rab1 Rab8 15.a4 Rfe8 16.Rfd1; 11.g3 0–0 12.Qd2 Rfe8 13.a4 Nf5 14.g4 Ne7 15.bc6 bc6 16.Ba3; 11.a4 0–0 12.Qd2 Nf5 13.h3 Rfe8 14.Ba3 c5 15.e4 d4 16.ef5) 11...0–0 12.h5 cb5 13.Nb5 Qb6 14.a4 a6 15.Ba3 ab5 16.Be7.

10.Qd2 A) 10...Bh6 11.h4 (11.b5 0–0 12.Nh4 Nc5 13.d4 ed4 14.Qd4 Bg5 15.a4 Bh4 16.Qh4; 11.Rfe1 0–0 12.h3 Nf5 13.g4 Nd4 14.b5 f5 15.gf5 Rf5 16.Nh2; 11.Rab1 0–0 12.h4 Nf5 13.Qe1 Qe7 14.h5 gh5 15.Bc1 Nd6 16.Bd2; 11.h3 0–0 12.Nh4 a5 13.b5 Nc5 14.d4 ed4 15.Qd4 Bg5 16.Nf3) 11...0–0 12.h5 gh5 13.Nh4 Bg5 14.Nf3 h4 15.Kh1 Kg7 16.a4; B) 10...Bg7 11.h4 (11.Rab1 0–0 12.b5 a6 13.ba6 b5 14.d4 e4 15.Ne1 Nf5 16.a4; 11.h3 0–0 12.a4 Nf5 13.a5 Rfe8 14.Rfb1 Qe7 15.b5 Rab8 16.a6; 11.Rfe1 0–0 12.h3 Bh6 13.Nh4 a5 14.b5 Qc5 15.Qd1 a4 16.Rb1; 11.Rad1 0–0 12.h3 b6 13.Rb1 a6 14.Rfe1 Rfe8 15.Red1 Bh6 16.Qe1) 11...0–0 12.h5 gh5 13.a4 Rfe8 14.b5 Nf5 15.Rfd1 Rac8 16.Ra3.

10.h4 A) 10...Bg7 11.b5 (11.Qd2 0–0 12.Rfe1 Bg4 13.Rab1 a6 14.Ra1 Rfe8 15.Rab1 Bh6 16.Qd1; 11.Rb1 0–0 12.h5 gh5 13.Qd2 Bh6 14.b5 Nf5 15.Qe1 Qc7 16.e4; 11.Re1 0–0 12.h5 gh5 13.Qd2 a5 14.b5 Nf5 15.bc6 Qc6 16.a4; 11.Na4 0–0 12.c4 Rfe8 13.c5 Qc7 14.Qd2 a5 15.h5 gh5 16.Nc3) 11...0–0 12.Qd2 Nf5 13.h5 gh5 14.a4 Rfe8 15.Rfd1 Rac8 16.e4; B) 10...Bh6 11.b5 (11.Qe1 0–0 12.Na4 Bg4 13.Ne5 Be2 14.Nd7 Bf1 15.Nf8 Bg2 16.Nh7; 11.Re1 0–0 12.h5 gh5 13.Rb1 a6 14.Ra1 Rfd8 15.Rb1 Nb6 16.Nd2; 11.Rb1 0–0 12.h5 gh5 13.b5 Rac8 14.Re1 c5 15.Nd2 h4 16.e4; 11.Na4 0–0 12.c4 b5 13.c5 Qc7 14.Nc3 a5 15.Qb3 a4 16.Qd1) 11...0–0 12.h5 gh5 13.Rb1 Rac8 14.Re1 c5 15.Nd2 Qb6 16.Bh5.

5.d3 Nd7

6.Nd2 c5 7.bc5= Nc5 (7...Qc5 8.d4 Qb6 9.Rb1=) 8.Ngf3 (8.d4 Qb6 9.Bc1 Nd7=) 8...f6= 9.c4 (9.d4 Nd7=) 9...dc4 10.d4 ed4 11.Nd4 Nd3 12.Bd3 cd3 13.Ne4 Qd5 (13...Qb6 14.Ne6 Qe6 15.Qd3=) 14.Ne6+= Qe6 15.Qd3 Rd8 16.Qc2 Ne7 17.0–0 Nc6 18.Rfd1 Be7 (18...Rd1 19.Rd1 Be7 20.Nc5 Bc5 21.Qc5+=) 19.Rd8 Kd8 20.Nc3 Kc7 (20...Ke8 21.Nb5 Qg4 22.Rd1+=) 21.Rd1+/– h6 (21...Kb8 22.Nd5+/–) 22.Nd5 Kb8 23.Nf4 Qf7 24.Qe4 Rd8 25.Rd8 Bd8 26.Qe6 Qe7 27.h4 (27.Qb3 Bc7 28.Ne6 Bd6+/–) 27...g5 (27...Bc7 28.Qg8 Nd8 29.Nh5+/–) 28.Qe7= Be7 (< 28...Ne7 29.Ne6 Nc6 30.Nd8 Nd8 31.Bf6+–) 29.Nd5 Bd8 (29...f5 30.Ne7 Ne7 31.hg5 hg5 32.Bf6+/–) 30.Nf6 gh4 31.Nd5 Na5 32.a4 Kc8 33.Bg7 (33.e4 Nc4 34.Bd4 a6+/–) 33...Nc4 34.f4 Kd7 35.Kf2 Nd6 36.Bd4 Ke6 37.Nc3 Ba5 38.Kf3 Bc3 39.Bc3 Kf5 40.Bb4 Ne4 41.a5 h5+= 42.Be1 h3 43.gh3 b5 44.a6 Nc5 45.Ba5 Na6 46.e4 Ke6 47.f5 Kf7 48.e5 b4 49.e6 Ke7 50.Kf4 b3 51.Ke5 b2 52.f6 Kf8 53.Bd2 b1Q 54.Bh6 Kg8 55.f7 Kh7 56.f8Q Qb2 57.Kf5 Qc2 58.Ke5 Qc3 59.Kd6 Qd4 60.Ke7 Nc7 61.Bc1? Qc5–+ 62.Kf7 Qf5 63.Ke7 Nd5 64.Ke8 Qe6 65.Kd8 Qf6 66.Qf6–/+ Nf6 67.Ke7 Kg6 68.Ke6 Ne4 69.h4 a5 70.Ke5 Ng3 Black fights for the Initiative 71.Kd5 Kf5 72.Kc4 Kg4 73.Bg5 Nf5 74.Kb5 Nh4 75.Bd8 Nf3 76.Ka5 Ng5 77.Kb4 h4 78.Kc4 h3 79.Bc7 Ne4 80.Bh2 Kf3 81.Kd3 Kg2 (82.Ke4 Kh2–+) 0–1. Olbrisch,Manfred – Hinrichs,Uwe, Mittelrhein–ch, 1991.

6.Nd2 c6 7.c4 f6 8.Ngf3 Be7 9.Be2 Nh6 10.0–0 0–0 11.Ne1 Rac8 12.f4 Qb8 13.c5 b6 14.cb6 ab6 15.fe5 fe5 16.Rf8 Rf8 17.Qa4 c5 18.Bf3 Bd6 (18...Qd6 19.Nc2–/+) 19.Nf1 (better is 19.Bd5 Bd5 20.Qd7+=) 19...b5 20.Qa6 c4 (20...cb4?! 21.ab4 Qb6 22.Qb6 Nb6 23.Ra5=) 21.dc4 e4?? (21...bc4 22.Nc2–/+) 22.Be2?? (better is 22.c5 ef3 23.Nf3+/–) 22...Bg4–+ (22...dc4?! 23.Rd1 Nf7 24.Qc6=) 23.Bg4? (better is 23.Nf3!? bc4 24.Nd4–/+) 23...Ng4 24.g3?? (24.Nf3 ef3 25.gf3 Rf3 26.Qc6 Bh2 27.Kh1–+) 24...Rf1! (24...dc4?! 25.Bd4–/+; 24...bc4?! 25.Bd4–/+) 25.Kf1 Qf8 26.Kg2 Ne3 0–1. Schott,Detlef (1865) – Koentges,Markus (1825), Niederrhein–ch, 2007.

6.Nd2 f5 7.c4 c6 8.Qh5 g6 9.Qd1 Bg7 10.Ngf3 Ngf6 11.Ng5 0–0 12.Ne6 Qe6 13.Nf3 Rae8 14.Be2 Nh5 Black prepares f4 (14...e4 15.Nd4 Qe7 16.0–0=) 15.Ng5 (15.cd5 cd5 16.Qa4 a6=) 15...Qe7= 16.Nf3 f4 17.g3 (17.e4 Nhf6=) 17...fg3 (17...fe3 18.fe3 e4 19.Bg7 Kg7 20.de4 Qe4 21.Qd4 Qd4 22.Nd4 (22.ed4?? Rf3 23.cd5 Rfe3–+) 22...Re3 23.cd5 cd5 24.Kd2–/+) 18.fg3 (better is 18.hg3!? e4 19.Bg7 ef3 20.Bf8 fe2 21.Be7 ed1Q 22.Kd1 Re7 23.cd5 cd5 24.Rc1=) 18...e4–/+ 19.Bg7 ef3 20.Bf8 Qe3 21.Ra2 Nf8 22.Kf1?? (better is 22.cd5 cd5 23.Rf1–+) 22...fe2 23.Re2 Qf3 24.Ke1 Qh1 25.Kd2 Qd1 (25...Re2 26.Qe2 d4 27.b5–+) 26.Kd1 Re2 27.Ke2 Kf7 0–1. Holz auf der Heide,Gerhard (1645) – Kielstein,Hans (1895), Leipzig VfB op, 2004.

6.Nd2 f5 7.c4 Ngf6 8.c5 Qe7 9.Ngf3 Bf7 10.Be2 h6 11.h3 (11.0–0 a5+=) 11...c6 12.Qc2 g6 13.Qc3 Bg7 14.Ne5 Ne4 15.de4 (15.Ne4 fe4) 15...Ne5 16.0–0–0 (16.ed5!? Bd5 17.e4 fe4 18.Qe3=) 16...de4=+ 17.Qc2 0–0–0 18.Nc4 Bc4 19.Bc4 Nc4 20.Qc4 Bb2 21.Kb2 Rd7 (21...Rhe8 22.Rhg1=+) 22.Rd7 Qd7 23.Qd4 Qd4 24.ed4 Kd7 25.Kc3 Ke6 26.Re1 Kd5 27.f4 (27.a4 Rd8=) 27...g5=+ 28.Rf1 Rf8 29.g3 (29.a4 Rf6=+) 29...Rf7 (29...b5 30.cb6 ab6 31.b5–/+) 30.a4=+ a6 31.Rf2 e3 32.Re2 (32.Rf1 Ke4 33.b5 Rd7 34.fg5 hg5–+) 32...Ke4–+ 33.fg5 hg5 34.a5 (34.b5–+) 34...f4 35.gf4 gf4 36.Rg2 Kf3 37.Rg5 Re7 38.Kd3 e2 (39.Rg1 Kf2–+) 0–1. Genne,Rene – Werner,Bernd Michael, Lenk op, 1989.

6.Nd2 Ngf6 7.Ngf3 c6 (7...a5 8.c4 ab4 9.ab4 Ra1 10.Qa1 dc4 11.dc4+= (< 11.Be5 Ne5 12.Ne5 Qb4=+)) 8.Be2 Be7 9.0–0 0–0 (9...a5 10.c4=+) 10.c4 Rac8 (10...b5 11.c5 Qc7 12.Ng5=) 11.Rc1 (11.c5 Qc7=) 11...h6 (11...Rfe8 12.d4 e4 13.Ng5=) 12.d4 e4 13.Ne5 Nh7 (13...dc4 14.Ndc4 Qd5 15.f3=) 14.c5 (14.Qa4 Ra8+=) 14...Qc7= 15.Nb3 (15.Nd7 Qd7 16.f3 Bg5+=) 15...Bf6 (15...Ne5 16.de5 Rce8 17.Qd2=) 16.Nd7 Bd7 17.a4 (17.Qc2 Ng5=) 17...a6 (17...Ng5 18.Qc2=) 18.Bc3 Ra8 19.Be1 (19.a5 Ng5+=) 19...Rfe8 (19...Ng5 20.a5=) 20.Nd2 Bg5 21.Qb3 (21.a5 Nf6=) 21...f5 (21...Nf6 22.h3=) 22.Kh1 (22.f3 f4 23.Ne4 fe3 24.Ng5 Ng5+/–) 22...f4= 23.ef4 (23.Bh5 Re6=) 23...Bf4 24.g3 e3 (24...Bg5 25.f4 ef3 26.Bf3 Re1 27.Rce1 Bd2 28.Re2–/+) 25.fe3= Be3 26.Bh5 Re7 (< 26...Bd4 27.Bf7 Kh8 28.Be8 Re8 29.Bf2+=) 27.Qd3 Nf6 (27...Rf8 28.Rf8 Nf8 29.Bf3=+) 28.Bf3 (28.Bg6!?=) 28...Bh3=+ 29.Bg2 Bg2 30.Kg2 Rae8 31.h3 (31.Rd1 b5=+) 31...Qd7 (31...Bg5 32.Rd1 Re3–/+) 32.Rb1 (better is 32.Bf2!?=+) 32...Bd2–/+ 33.Bd2 Re2 34.Rf2 Rf2 35.Kf2 Qh3 36.Bf4 Re4 37.Bb8? (37.Kf3–+) 37...Qh2 38.Kf3 g5 (39.g4 Qb8–+) 0–1. Solozhentseva,Anna (2090) – Korneeva,Irina, RUS–ch U18 Girls, 2001.

6.Nf3 (--> 5.Nf3 Nd7 6.d3).

5.d4 e4

6.c4 dc4 7.Nd2 =.

6.Nd2 c6 7.c4= f5 (7...Nf6 8.c5 Qd7 9.Ne2=) 8.Nh3+= Nf6 9.cd5 (9.Nf4 Be7=) 9...cd5 (9...Nd5 10.Ng5=) 10.Rc1 Be7 11.Qc2 (11.Nf4 Bd7+=) 11...0–0= 12.Qc7 Qd7 (12...Bc8 13.Nf4=) 13.Qd7 Nbd7 (13...Bd7 14.Rc7=) 14.Be2 (14.Rc7 Rac8 15.Rc8 Rc8=+) 14...Bd6= 15.Nb3 Bf7 16.Nc5 b6 17.Nd7 Nd7 18.Rc6 Be7 19.Rc7 Rfd8 (19...Be8 20.Bb5 Nf6 21.Be8=) 20.Kd2 (better is 20.Bb5!? Be6 21.Nf4+/–) 20...Bd6= 21.Rc6 Nf6 22.Rhc1 Be8 23.R6c3 b5 24.Nf4 Bd7 25.Bd1 g5 26.Ne2 f4 27.h3? f3–/+ 28.Ng1? fg2–+ 29.Bb3 Kf7 30.Ke1 Bh2 31.Kd2 Bg1 32.Rg1 Bh3 33.Bd1 Rac8 34.Rc8 Rc8 35.f3 h5 36.Be2 a6 37.Ba1 g4 38.fg4 Ng4 39.a4 Rb8 40.ab5 ab5 41.Bg4 hg4 42.Ke1 Ra8 43.Kf2 Ra2 44.Kg3 Re2 45.Kf4 Rf2 46.Kg3 Rf1 47.Kh2 g3 (48.Kh3 Rg1 49.Kg3 Ra1 50.Kg2 Rb1–+) 0–1. Torre,E – Alonso,Rodolfo (2200), ARG–ch U18 Moreno, 1995.

6.Nd2 Qc6 7.Ne2 =+.

6.Nd2 Nd7 7.c4 c6 (7...Ngf6 8.Rc1=) 8.f3 (8.cd5 cd5 9.Rc1 Ngf6=) 8...f5 (8...Ngf6 9.Qc2 ef3 10.Ngf3=+) 9.Be2 (9.Nh3 Ngf6=) 9...Ngf6 10.c5 Qc7 (11.Nh3 ef3 12.Nf3 Qd8+=; 10...Qe7 11.b5=). george – thotares (1685), internet, 2007.

6.Nd2 f5 7.c4 c6 8.Nh3 Be7 (8...Qd7 9.cd5 Bd5 10.Nf4+=) 9.Nf4 Bf7 (9...Nf6 10.c5 Qd7 11.Be2+=) 10.cd5 cd5 11.Bb5 Nd7 12.Rc1 (12.Nb3 Qb6 13.Ba4 Ngf6+=) 12...Ngf6= 13.Qc2 (13.Nb3 a6 14.Be2 b6=) 13...0–0 14.Qc7 Rab8 15.0–0 (15.Qd6 Bd6 16.Nf1 a6+=) 15...a6 16.Bd7 (16.Be2 Qc7 17.Rc7 Bd6+=) 16...Nd7 17.Nb3 Nb6 18.Na5 (18.Qc3 Nc4+=) 18...Nc4 19.Qd6 Bd6 20.Nc4 dc4 21.Ne2 b5 22.Nc3 Rfd8 23.f3 ef3 24.gf3 (24.Rf3 Bg6+=) 24...g6 (24...Bc7!?+=) 25.Rcd1= White plans d5 25...Bf8 (25...g5 26.e4=) 26.e4 White intends d5 26...fe4 (26...Bg7 27.d5=) 27.fe4 Bh6 (27...Bg7 28.e5=) 28.Rfe1 (28.d5 Bg7+=) 28...Rb7 (28...Bg7 29.d5+=) 29.d5+= Re7 (29...Rbd7 30.a4+=) 30.e5+/– Bf4? (30...Bg7 31.e6 Be6 32.de6 Rd1 33.Nd1 Bb2 34.Nb2 Kg7+–) 31.e6+– Be8? (better is 31...Kf8+–) 32.Ne4 ½–½. Huelle,Gunter – Mierse,Frank, Leipzig VfB op, 1998.

6.Nd2 Nf6 7.c4 Be7 (7...a5 8.Qa4 Qd7 9.b5=) 8.Ne2 c6 (8...a5 9.Qa4 Qd7 10.b5=) 9.Nf4 0–0 10.Rc1 (10.c5 Qc7=) 10...Nbd7 (10...Bg4 11.Qc2=) 11.c5 (11.Be2 b6=) 11...Qc7 12.Be2 b6 13.Nb3 b5 14.0–0 Bf5 15.g4 (15.Na5 Rab8=) 15...Bg6 16.Nd2 a5 17.a4 ba4 18.b5 cb5 The passed pawn on c5 will quickly become a dangerous weapon (18...Qb7 19.Ng6 fg6 20.f4=) 19.g5+= (worse is 19.Bb5 Rab8 20.Bd7 Qd7+= (worse is 20...Nd7 21.Nd5 Qd8 22.Ba3+/–; 20...Rb2?! 21.Ba4 Rd8 22.h3=); worse is 19.Ng6 fg6 20.g5 Nh5 21.Bb5 Bg5+=) 19...Qc6 20.gf6 Nf6 21.Ng6 hg6 (21...fg6 22.f3+=) 22.Ra1+= Rab8 23.f3 Bd8 24.f4 (24.fe4 de4 25.Qc2 Re8+=) 24...Kh7= 25.Nb1 Rh8 26.Rf2 Ne8 27.Bf1 g5 28.Nc3 Nc7 29.fg5 Bg5= 30.Bc1 f6 31.Qg4+= Rhf8 32.Rg2 a3 33.Ne2 b4 34.Ng3 g6 35.h4 Qe6 36.Qe6 Be3 37.Be3 Ne6 38.Rga2 Kg7 (38...f5 39.Bh3+/–) 1–0. Riepe,Bernhard (2080) – Kleinsorgen,Horst M (2110), desc–online.de, 2003.

6.Ne2 Nf6 7.c4 c6 (7...dc4 8.Nec3+=) 8.cd5= cd5 9.Nf4 Be7 10.Nc3 Nbd7 11.Be2 Nb6 12.0–0 0–0 13.Rc1 Rac8 14.Ne6 fe6 15.Nb5 Qb8 16.Rc8 Rc8 17.Nc3 Bd6 18.g3 Nc4 19.Bc4 Rc4 (worse is 19...dc4 20.Qc2+=) 20.Nb5 Be7 21.Nc3 Qc8 22.Qd2 a6 23.f4 ef3 24.Rf3 b6 25.Rf1 a5 26.ba5 ba5 27.Rb1 a4 28.Qe1 Ba3 29.Nd5 Nd5 30.Ba3+= Rc2 31.Rd1 h6 32.Rc1 Rc1 33.Qc1 Qc1 34.Bc1 Nb6 35.Ba3 Nc4 36.Bc1 a3 37.Ba3 Na3 38.Kf2 Kf7 39.Kf3 Nb5 40.Ke4 Kf6 41.Kf3 h5 42.h3 Nd6 43.e4 e5 44.Ke3 ed4 45.Kd4 Nb5 46.Kd5 Nc3 47.Kd4 Ne2 48.Ke3 Ng3 49.Kf4 Ne2 50.Ke3 Ke5 51.Ke2 Ke4 (51...Ke4 52.Kf2 Kf4–+) 0–1. Winiger,Albert (2340) – Zenner,Peter (2180), RSX8D – priv – XMAS, 2004.

6.c4 c6

7.Nc3 Nf6 8.Qc2 dc4 9.Ne4 Ne4 10.Qe4 Be7 (10...Qd5 11.Qb1+=) 11.Qc2= Bd5 12.Ne2 (12.Bc4?? Bg2 13.d5 0–0–+ (worse is 13...Bh1 14.Bg7 Qh2 15.Bh8 Qg1 16.Ke2 Qg4 17.Kd2–+)) 12...Nd7 (12...0–0 13.e4 Be6 14.Qc3=) 13.Ng3+= Qe6 14.e4 Bh4 (14...f5!? 15.Nf5 Qe4 16.Qe4 Be4 17.Ne7 Ke7 18.Bc4 Nb6+/–) 15.Be2+/– c3 16.Bc3 (16.ed5?! cb2 17.Qb2 Qd5=) 16...Bb3 17.Qb1 Bg3 18.hg3 (worse is 18.fg3 Bc4+=) 18...Bc4 19.Bc4 Qc4 20.Qc2 0–0–0 21.Rc1 Rde8 22.f3 f6 23.g4 Qb5 (23...Kb8 24.Qb2+/–) 24.Rh5+– Qb6 (24...g5 25.a4 Qc4 26.b5+–) 25.b5 g6 (25...Kb8 26.bc6 Qc6 27.Bb4+–) 26.Qa4 (26.Qa4 c5 27.dc5+–) 1–0. Woschkat,Karl_Heinz – Mikwa,Raymond, IECG, 1999.

7.Nc3 Nf6 8.c5 Qc7 9.Nge2 =.

7.Nc3 Nf6 8.c5 Qd8 9.Nge2 Nbd7 10.Nf4 Bf5 (10...Bg4 11.Qa4=) 11.Be2 g5 (11...Be7 12.0–0=) 12.Nh5+= Nh5 13.Bh5 Nf6 (13...Qf6 14.0–0 Bg7 15.b5+=) 14.Be2 Bg7 15.b5 0–0 (15...h5 16.bc6 bc6 17.Rb1+=) 16.Rb1 (16.0–0 Qc7+=) 16...Qc7 (16...Qd7 17.0–0+=) 17.a4 (17.g4 Be6+=) 17...Be6 (17...Rfc8 18.g4 Be6 19.h4+=) 18.0–0 a6 (18...Rab8 19.Ba3+=) 19.Bc1 (19.b6 Qe7+=) 19...ab5= 20.ab5 Rfe8 (20...Ra5 21.Bb2=) 21.Bb2 Bf5 22.Na4 Nd7 23.Ra1 Nf6 (23...b6 24.Qb3 bc5 25.Nc5+= (< 25.dc5 cb5 26.Bb5 Bb2 27.Qb2 Reb8=)) 24.Ba3 (24.Nb6 Ra1 25.Ba1 Nd7 26.Nd7 Qd7+=) 24...h5 (24...g4 25.Nb6 Rab8 26.Bb4+/–) 25.Nb6 Rad8 26.Bb2 Bg4 27.Bc3 cb5 28.Ra7 Qb8 29.Ra5 Qc7 30.Rb5 Be2 31.Qe2 Ng4 32.g3 f5 33.Ra1 f4 34.h3 Nf6 35.Ra7 Re7 36.ef4 gf4 37.Ba5 Qc6 38.gf4 Bh6 39.Bd2 Rg7 40.Kh2 Kh7 41.Ra3 h4 42.Rb1 Rdg8 43.Kh1 Qe6 44.Re1 Qf5 (45.Bc1 Nh5=+). Riepe,Bernhard – Dorer,Manfred, Meisterschaft, 2005.

7.Nc3 Nf6 8.cd5 cd5 9.Rc1 Nc6 =.

7.Ne2 Nf6 8.c5 (8.Nd2 Be7=) 8...Qc7 9.h3 (9.Nbc3 Nbd7=) 9...h5 (9...Be7 10.Nf4=) 10.Nbc3 (10.Nf4 Bf5=) 10...Nbd7 (10...Bd7 11.Qd2=) 11.Nf4+= Bf5 12.Be2 h4 (12...g6 13.b5+=) 13.Qb3 White prepares b5 (13.b5 Rg8+=) 13...Be7= 14.0–0 (14.Qd1 g5 15.Nh5 Nh5 16.Bh5 Nf6=) 14...0–0 (14...Rg8 15.Rad1=) 15.Rac1 (15.b5 g5 16.Nh5 g4 17.hg4 Ng4+=) 15...Rfe8 (15...g5 16.Nh5=) 16.b5 Rab8 (16...g5 17.Nh5=) 17.Ba1 (17.Qa4 Ra8+=) 17...Nf8 (17...g5 18.Nh5=) 18.Rb1 Ne6 19.Ne6 Be6 20.Qa4 g5 (20...Rec8 21.bc6 (worse is 21.Qa7 Ra8 22.Qb6 Qb6 23.cb6 Ba3–/+) 21...bc6 22.Na2 Rb1 23.Rb1+=) 21.Qa7 (21.Rb2 g4 22.hg4 Bg4+=) 21...Ra8= 22.Qb6 Qc8 (better is 22...Qb6!? 23.cb6 c5 24.dc5 Bc5+= (24...Ra3? 25.c6+–)) 23.bc6+/– bc6 24.Qb7 (better is 24.Bb2!?+/–) 24...Ra3= 25.Rb6 (25.Qb2 Ra8=) 25...Bd7 (25...Nd7 26.Qc8 Rc8 27.Ra6=) 26.Qc8 Rc8 (worse is 26...Bc8 27.Rc6 Be6 28.Rb1+/–) 27.Bb2 Ra7 28.Ra1 Ra1 29.Ba1 Bd8 (29...Ra8 30.Ra6 Ra6 31.Ba6=) 30.Ra6 Ne8 (30...Kg7 31.Bd1=) 31.Ra7 Rc7 (31...Bc7 32.f3 ef3 33.Bf3=) 32.Ra8 (32.Ra4 Rb7=) 32...Rc8 33.Rc8 Bc8 34.Na2 Nc7 35.Nb4 Bd7 36.Bc3 (36.f3 ef3 37.gf3 Ne6=) 36...f5 37.Kf1 Kf7 38.Bd2 Ke6 (38...Bf6 39.Kg1+=) 39.Ke1= Nb5 40.Bd1 (40.Na6 Na3=) 40...Be8 (40...Bf6 41.Be2=) 41.Kf1 (41.Be2 Bc7=) 41...Bd7 42.Be1 (42.Ke1 Ba5=) 42...f4 (42...Bf6 43.Na6+=) 43.Bg4= Ke7 44.Be2 (44.Bd2 Bc7=) 44...Na7 45.ef4 gf4 46.f3 Kf7 47.fe4 de4 48.d5 cd5 (48...Bf6 49.Bh5 Kg7 50.Bd1=) 49.Nd5 f3 (49...Bg5 50.Bd2 e3 51.Bc3=) 50.gf3 ½–½. Degterev,Pavel (2275) – Leonard,Mark (2040), SM–2009–0–00051, 2009.

5.Nf3 Nd7

6.Bb5 c6 7.Ba4 (7.Be2 Ngf6=) 7...Ngf6+= 8.0–0 Be7 9.d3 Qc7 (9...0–0 10.Ng5+=) 10.Bb3 Bg4 Black begins to deal mighty blows 11.h3 h5?? (better is 11...Bh5 12.Nbd2 a5+=) 12.hg4+/– hg4 13.Nfd2 0–0–0 14.g3 (14.Re1 Rh7+/–) 14...Rh7 15.Re1 Rdh8 Threatening mate... how? 16.Kf1 e4 17.de4 de4 (better is 17...Rh2 18.e5 Ne5+=) 18.Bf7?? (better is 18.Ke2 Ne5 19.Rf1+–) 18...Qg3–+ 19.Ne4 (19.fg3 Rh1 The nicest combinations are those leading to mate) 19...Qf3 0–1. McCarthy,Mike – Schalkwijk,Peter, IECG, 2000.

6.Qc1 Ngf6=+ 7.c4 c6 8.c5 Qc7 9.Be2 h6 (9...Bg4 10.h3 Bh5 11.g4=) 10.Qc2 Be7 11.0–0 Ne4 (11...0–0–0 12.Nc3=) 12.d3 (12.d4 Bf6=) 12...Ng5 (12...Nef6 13.Qc3 Bg4 14.Nbd2=) 13.Nbd2 (13.Nfd2 Bf6+=) 13...f5 (13...0–0–0 14.a4=) 14.e4 (14.Ne5!? Ne5 15.f4=) 14...Nf7 (14...0–0–0 15.ef5 Bf5 16.Ne5 Ne5 17.f4–/+) 15.Rab1 (15.Rfe1 0–0–0=) 15...g5 (15...0–0–0=) 16.g3 (16.ef5 Bf5 17.Qa4 0–0=) 16...Rg8 (16...0–0–0 17.b5–/+) 17.Ne1 f4 (17...0–0–0 18.ed5 Bd5 19.d4=+) 18.d4= Bh3 (18...0–0–0 19.b5=) 19.Ng2 0–0–0 (19...g4 20.ed5 Bg2 21.Kg2 cd5 22.de5 f3 23.Nf3 gf3 24.Bf3 Nde5 25.Bd5+/–) 20.Rfe1 (20.b5 cb5 21.Bb5 ed4+=) 20...g4 21.Bd3 Bg2 22.Kg2 Kb8 23.ed5 cd5= 24.de5 f3 25.Kg1 Nde5 26.Be5 Ne5=+ 27.a4 h5 28.a5= h4 29.a6 hg3 30.fg3 Rdf8 31.Rf1 Bg5 32.ab7 Be3 33.Kh1 Rh8 34.Nb3 Nd3 35.Rbd1 Nb4 (36.Qb2 f2 37.Qh8 Rh8 38.Rf2 Bf2 39.Rg1 Bg3 40.Rg2 Qe5 41.Re2 Qe2 42.Kg1 Qh2 43.Kf1 Qf2#; 35...f2 36.Rf2 Rf2 37.Qf2 Nf2 38.Kg1 Nd3 39.Kg2 Rh2 40.Kh2 Qh7 41.Kg2 Qh3#) 0–1. Eisenhauer,Erik – Resa,Tobias (1780), SJRH–ch U18 Worms, 2001.

6.Nc3 a6 7.Ng5 Be7 8.Ne6 Qe6 9.Be2 Ngf6 10.d3 0–0 11.0–0 c6 12.e4 d4 13.Nb1 a5 14.c3 (14.ba5 Ra5 15.f4 Rd8+=) 14...c5 (better is 14...dc3!? 15.Nc3 ab4 16.ab4 Bb4–/+) 15.bc5 (15.b5 dc3 16.Nc3 Rfd8=) 15...Bc5+= 16.cd4 Bd4 17.Bd4 ed4 18.Nd2 Nc5 19.f4 Rab8 20.Rc1 Qb6 21.Rb1 Qa7 22.Kh1 (22.Rb5 Nce4 23.Ne4 Ne4 24.de4 d3 25.Kh1 de2 26.Qe2 Rfe8+=) 22...b5= 23.Nb3 Na4 24.Qe1 Nc3 25.Ra1 Qc7 26.Nd4+= b4 27.ab4 ab4 28.Nb3 Ra8 29.Bf3 Ra1= 30.Na1 Qf4 31.Nc2 Qb8 32.Nd4 Qb6 33.Nb3 Qb5 34.Be2?? Ne2?? 35.Qe2= Rd8 36.Rd1 Qe5 37.Qf3 Qc3–/+ 38.d4 Ne4! 39.Qe4 Qb3 40.Rb1 Qc4 41.Qe1 Qd4–+ 42.Rb4?? Qb4!! (42...Qb4 43.Qc1 Re8–+) 0–1. Kokkvoll,Tommy – Forfang,Asmund, Brokstad mem, 2003.

6.Nc3 f6 =.

6.Nc3 Ngf6 7.Nb5+/– Qb6 8.Ne5 a6 9.Bd4 (9.Nd7 Bd7 10.Bf6 ab5+/–) 9...c5 10.Nd7 Nd7 11.bc5 Nc5 (11...Bc5 12.Bc5 (worse is 12.Bg7 Rg8–/+) 12...Qc5 13.Nd4+/–) 12.Nc3 Qc7 (12...Qc6 13.Rb1+/–) 13.Be2 (13.Qf3 Qc6+/–) 13...Ne4 14.Bf3 Nc3 15.Bc3 0–0–0 (15...f6 16.Bg4 Bg4 17.Qg4+/–) 16.Qb1 (16.Rb1 Kd7+–) 16...Rg8 (16...f6 17.Bd4 Rd7 18.Bb6+–) 17.Qb2 (17.Bd4 Bc5+–) 17...g5 (17...Rd7 18.Bd4+–) 18.Rb1 (18.Bd4 Rd7+–) 18...Rd7+/– 19.Bd4 Bc5 (19...Qa5 20.Ra1+/–) 20.Be2+– Bd4 21.Qd4 f5 (21...g4 22.0–0+–) 22.Qa7 (22.0–0 f4+–) 22...Kd8 (22...Rd6 23.a4+–) 23.Rb6 (23.0–0 f4+–) 23...Ke7 (23...Rg6 24.c3+–) 24.Rb2 (24.0–0 Rc8+–) 24...Qd6 (24...Qc6 25.Qd4+–) 25.Rb7 Rgd8 (25...Qa3 26.0–0+– (26.Qa6?! Qa6 27.Rd7 Bd7 28.Ba6 Ra8+=)) 26.Rd7 Rd7 27.Qa6 (27.Qd4!? Kf7+–) 27...Qa6 28.Ba6 Ra7 29.Bd3 Ra3 30.Ke2 h6 (30...Ra4 31.Rb1 Ra7 32.Rb8+–) 31.f3 (31.Rb1 Ra7+–) 31...Kf6 32.Rc1 (32.Rb1 Ra4+–) 32...Ra4 33.g3 (33.Rb1 h5+–) 33...h5 Black plans g4 (33...g4 34.h3!+–) 34.Rb1 g4 35.Rb6 (35.c3 h4+–) 35...Ra1 (35...Ke7 36.Ra6 Rb4 37.Ra8+–) 36.c4 gf3 (36...Ke7 37.fg4 fg4 38.cd5 Bd5 39.e4+–) 37.Kf3 Ke5 38.c5 (better is 38.Rb5+–) 38...Rh1?? (38...Rd1 39.Rb2 Rh1 40.Kg2+–) 39.Be2 (39.Ba6 d4 40.ed4 Kd4 41.Re6 Kc5+–) 39...Rc1 (39...Rh2 40.c6 Rh1 41.d4 Kf6 42.Kf4+–) 40.d4 (better is 40.Ba6!? d4 41.ed4 Kd4 42.Re6 Rc5+–) 40...Kf6 41.Kf4 Rc2 42.Kf3 (better is 42.Bh5!? Rh2 43.g4 Ke7 44.Re6 Ke6 45.gf5 Kf6+–) 42...Ke7?? (42...Rc1 43.h3 Rc2+–) 43.h4 (43.Rb7 Kf6 44.Rh7 Bf7+–) 43...f4 44.Bb5 (44.Bd3 Rc3 45.Bg6 fe3 46.Bh5 e2 47.Ke2 Rg3 48.Rb7 Kf6+–) 44...Bg4 (44...fe3 45.Ke3 Bg4 46.Rb7 Kf6 47.Rb8+–) 45.Kf4 Rf2 46.Kg5 Rg2 (46...Rf5 47.Kg6 Rf3 48.Rb8 Rf6 49.Kg7 Rf7 50.Kg8+–) 47.Rb7 Kd8 48.Kf4 Rf2 (48...Rb2 49.c6 Bc8 50.c7 Ke7 51.Rb8 Rf2 52.Kg5 Rf5 53.Kg6 Rf6 54.Kh5 Rf5 55.Kg4 Rf8 56.Rc8 Rc8 57.e4+–) 49.Ke5 Rf5 50.Kd6 Rf3 (50...Rf6 51.Kd5 Kc8 52.Rg7+–) 51.c6 (51.Rb8 Bc8+–) 51...Rf6 52.Kd5 Rf5 (52...Bc8 53.Rh7 Bf5 54.Rh5+–) 53.Kd6 Rf6 54.Kc5 Bc8 55.c7 Ke7 1–0. Sternik,Ryszard – McKinnon,D, Toowoomba, 1992.

6.d3 a5 7.b5 Be7 8.Nbd2 Ngf6 9.Be2 0–0 10.c4 c6 11.0–0 cb5 12.cb5 a4 13.Ng5 Bf5 14.e4 Bg6 15.Qb1 (15.Ngf3 de4 16.de4 Be4 17.Ne4 Ne4=) 15...Nh5 16.Nh3 Rfc8 17.Qd1 Nhf6 18.f4 de4 19.Nc4 (19.de4 Ne4 20.Ne4 Be4–/+) 19...Qd5 (19...Qc5 20.d4 ed4 21.Bd4 Qd4 22.Qd4–/+) 20.Ne5 Qb5 21.Rb1 Ne5–+ 22.Be5 Qa5 23.Rb7 Ba3–+ 24.Bf6? Rc1 25.Bc3 Qc3 26.Qa4 Ra4 (26...Ra4 27.Nf2 ed3–+) 0–1. StarterRook – Theoryhack, ChessWorld.net, 2009.

6.d3 c6 7.Nbd2 Be7 8.c4 Nh6 9.d4 (9.Be2 0–0=) 9...e4 10.Ne5 0–0 11.Be2 Rac8 (11...Ne5 12.de5 Qd7 13.0–0=) 12.Nd7 Qd7 13.Qa4 Qc7 14.Qb3 (14.0–0 Ng4 15.Bg4 Bg4=+) 14...Qd7 (14...Rfe8 15.Rc1=) 15.h3 (15.0–0 Nf5=) 15...Bd6 (15...dc4 16.Qc2=) 16.0–0–0 (16.c5!? Bb8 17.b5=) 16...b5 17.c5 Bc7 ½–½. Sturc,Gustav – Odler,Daniel (2185), Stary Smokovec op, 1996.

6.d3 Be7 7.Nbd2 c6 8.Be2 Nh6 9.0–0 0–0 10.c4 f5 11.h3 (11.Rc1 Bf6=) 11...a5 (11...f4 12.e4=) 12.b5 (12.c5 Qc7=) 12...g5 (12...cb5!? 13.cb5 f4+=) 13.c5= Qc7 14.b6 (14.d4 g4 15.Ne5 Ne5 16.de5 gh3 17.gh3 f4=) 14...Qb8 (14...Qd8 15.d4=) 15.d4 e4 16.Nh2 Nf6 Black intends g4 (16...f4 17.Ng4 Nf5 18.ef4 gf4 19.Re1=) 17.f4 g4 (17...ef3 18.Ndf3 Ne4 19.Ne5=) 18.Qe1 Nh5 (18...Qe8 19.Kh1=) 19.g3 (19.Nb3 a4 20.Na5 Ng7+=) 19...Qe8 20.hg4 (20.Kg2 Qg6=) 20...fg4+= 21.Kg2 Ng3 22.Qg3 Nf5 23.Qg4 (23.Qf2!? g3 24.Qg1 gh2 25.Kh2 Kh8 26.Rf2–+) 23...Kh8–+ (23...Kh8 24.Kh1 Rg8–+) 0–1. Lothal,G – Matthey, corr DDR–Cup, 1984.

6.d3 Be7 7.Nbd2 Bf6 8.Rb1 (8.c4 a5=) 8...c6 (8...g5 9.d4=) 9.Be2 Ne7 10.0–0 0–0 11.c4 Rfd8 12.Qc2 Rac8 13.Rfd1 Qb8 14.Nf1 b5 15.c5 a5 16.Bc3 a4 17.d4 (better is 17.Ng3!?=) 17...Bf5–/+ 18.Qb2 ed4 19.Bd4 Bb1 20.Qb1 Ne5 21.Ne5 Be5 22.Bg4 Bd4 23.Bc8 Bc5! 24.Bf5 Nf5 25.Qf5 Be7 26.Rc1 g6 27.Qc2 Rc8 28.Ng3 Bd6 29.Rd1 c5 30.bc5 Rc5 31.Qa2 Qc7 32.Qd2 Be5 33.f4 Bc3 34.Qd3 Qe7 35.Rb1 Ba5 36.Rb5?? Rb5–+ 37.Qb5 Qe3 38.Kh1 Qf4 39.Nf1 Bb6 40.h3 Qd4 41.Kh2 h5 42.Kg3 Qf2 43.Kh2 h4 44.Qe8 Kh7 (44...Kh7 45.Qe3 Be3 46.Ne3 Qe3 47.Kh1 Qe1 48.Kh2 d4 49.g4 hg3 50.Kg2 Qf2 51.Kh1 Qf1#) 0–1. Frenzel,Lothar – Blodig,R, Hindlangen, 1997.

6.d3 Be7 7.Nbd2 Ngf6 8.c4 c6 9.Be2 =.

6.d3 Be7 7.Be2 a5 8.ba5 Ra5 9.0–0 Ngf6 10.Nbd2 0–0 11.Nb3 (11.c4 b6=) 11...Ra4–/+ 12.Qd2 Rfa8 13.Rfd1 Bg4 14.h3 Bf3 15.Bf3 Qe6 16.Qc1 Bd6 (16...b5 17.Nd2–/+) 17.Nd2=+ Nc5 18.d4 ed4 19.ed4 Nce4 20.Nb1 (20.Ne4 Ne4 21.Re1 Re8=+) 20...Qf5 21.Rd3 b5 22.g4 Qg6–+ 23.Bg2 Re8 24.Nc3 Nc3 25.Bc3 Rea8 26.Bb2–/+ c6 27.Qd1 h5 28.f3 hg4 29.fg4 Ne4 30.Qe1 Rc4 31.Be4 de4 32.Rc3 Raa4 33.Rc4 Rc4 34.c3 c5 35.Rc1 f5 36.Qe2 f4 37.a4 f3 38.Qf1 Qh6 39.ab5? Qe3 40.Kh1 Qe2 (40...Qe2 41.Qe2 fe2–/+) 0–1. Wallace,Gary – Sternik,Ryszard, EM b4–05–22, 2005.

6.d3 f5 7.Ng5 Ngf6 8.Ne6 Qe6 9.Be2 Bd6 10.Nd2 0–0–0 (10...a5 11.c4=) 11.c4 c6 12.c5 (12.Rc1 Kb8+=) 12...Bc7= 13.Nf3 Kb8 14.0–0 Rhg8 15.Qb3 g5 16.a4 g4 17.Nd2 f4 18.ef4 ef4 19.Ne4 (better is 19.Rfe1!?=+) 19...Ne4–/+ 20.de4 Qe4 21.Bd3 Qe7 22.Rfe1 Qh4 23.Bf1 g3–+ 24.fg3 Rg3! 25.Qc2 f3 26.Qf2 Qh2!! 27.Kh2 Rg2 28.Kh1 Rf2 (28...Rf2 29.Bd3 Rh2 30.Kg1 f2 31.Kf1 fe1R 32.Re1 Rf8 33.Kg1 Rg8 34.Kf1 Rh1 35.Kf2 Bg3 36.Kg2 Rh2 37.Kg1 Rb2–+) 0–1. tightfist (2280) – thotares (2405), net–chess.com, 2010.

6.d3 f6 7.Be2 c6 8.Nbd2 Be7 9.c4 Nh6 10.0–0 (10.e4 d4=) 10...0–0 11.Qb3 Nf7 12.Rfc1 (12.d4 dc4 13.Bc4 Bc4 14.Qc4 a5=) 12...f5 (12...Rfe8 13.d4=) 13.Qc3 Bf6 14.cd5 Bd5 (14...Qd5 15.e4 Qb5 16.Re1=) 15.e4 Be6 16.ef5 Bf5 17.Ne4 Qe6 18.Nf6 (18.Re1 Nb6=) 18...Qf6 (worse is 18...gf6 19.d4 Be4 20.Qe3+/–) 19.d4 e4 20.Ne5 Nb6 21.Qg3 (21.a4 Be6 22.Qg3 Nd6=) 21...Na4 22.Bc3 Nc3 (22...Rad8 23.Bc4 Be6 24.d5 Nc3 25.de6 Ne5 26.Qc3 Qf2 27.Kh1 Nc4 28.e7–/+) 23.Rc3 Be6 24.Rd1 Rad8 25.Nf7 (25.Re3 Bd5=) 25...Rf7= Exerts pressure on the isolated pawn 26.Bc4 (26.Qe3 Rdf8=) 26...Bc4+= 27.Rc4 b5 28.Rc5 (28.Rcc1 Rd4 29.h3 Rd5+=) 28...Rd4 29.Rd4 Qd4 30.h3 Qa1 (30...Rf6 31.Rc6 Qd1 32.Kh2 Rc6 33.Qb8 Kf7 34.Qb7 Ke6 35.Qc6 Qd6 36.Qd6 Kd6 37.Kg3–/+) 31.Kh2= Qf6 32.Re5 (32.Qg4 a5=) 32...h6 (32...Re7 33.Re7 Qe7 34.Kh1+=) 33.Kg1 (33.Re4 Qf2 34.Re8 Kh7 35.Qf2 Rf2=) 33...Re7 34.Re7 Qe7 35.Qe3 Kf7 (35...Kf8 36.Qf4 Ke8 37.Qb8 Kf7 38.Qf4 Kg6 39.Qe3=) 36.Qf4 Kg6 37.g4 (37.Qe3 Qe5=) 37...Qe6+= 38.Qe3 Qd5 ½–½. Pommerel,Wim H – Gouma,Ronald, NED–ch2 email, 1999.

6.d3 f6 7.Be2 Be7 8.c4 (8.0–0 a5=) 8...c6 (8...dc4!? 9.Qc2 a5–/+) 9.0–0= Nh6 10.cd5 cd5 11.Nbd2 0–0 12.Rc1 Rac8 13.h3 Nf7 14.Rc8 Rc8 15.Qb1 Qb8 16.Rc1 f5 17.Ng5?? (better is 17.Rc8 Qc8 18.Ne1=) 17...Ng5 18.Nf3 Nf7 19.Rd1 Bf6 20.Nd2 e4 21.Bf6 Nf6 22.de4 Ne4 23.Ne4 de4 0–1. mr5reasons1 (1655) – johannes66 (1810), gameknot.com, 2012.

6.d3 Ngf6 7.Nbd2 g6 (7...a5 8.c4=) 8.c4= c6 9.cd5 cd5 10.Be2 (10.Qa4 Kd8+=) 10...Bg7= 11.0–0 0–0 12.Rc1 Rac8 13.Nb3 b6 14.Qd2 e4 15.de4?? (better is 15.Nfd4=) 15...Ne4–+ 16.Rc8 Rc8 17.Qd1 Bb2 18.a4 Qb4 19.Nbd4 Bd4 20.Nd4 Qd2 21.Qb3 Ndc5 22.Qb5 Bd7 23.Qb1 Nc3 24.Qd1 0–1. Fournier,Frederic (1855) – Alfil47 (1720), Active, 2008.

6.d4 f6 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 f6 5.e3 Be6 6.d4 Nd7).

6.Be2 0–0–0 7.0–0 f6 (7...Be7 8.Nc3 f6 9.d4=) 8.d4 Kb8 9.Nfd2 (9.c4 dc4 10.Qc2 Ne7+=) 9...Nb6 10.c3 h5 (10...Be7 11.Qc2=) 11.Qc2 (worse is 11.Bh5 ed4 12.c4 Qe5–/+) 11...ed4 (11...Be7 12.c4 dc4 13.Rd1=) 12.cd4+= Nh6 13.Qc5 (13.Rc1 Bf5 14.Qb3 g6+=) 13...Qd7 14.Qc2 (14.Qa5 Qa4+=) 14...c6 (14...Qd6 15.Bd3+= (15.Bh5? Nf7–+)) 15.Nb3 (15.Nc3 Bf5 16.Qb3 Qc7+=) 15...Qc7 16.Bf3 (16.h3!?=) 16...Bd6 (16...Ng4 17.g3–/+) 17.g3 (17.h3 g5 18.Be2 g4+=) 17...h4–/+ 18.Qe2 (18.b5 cb5 19.Qc7 Bc7–/+) 18...g5 (18...hg3 19.hg3 Nc4 20.Bg2–/+) 19.Nc3 Nf5 (better is 19...Nc4–/+) 20.e4?? (better is 20.Nc5 Bc8 21.b5–/+) 20...de4–+ (20...hg3?! 21.ef5 gh2 22.Kh1 Bf5 23.Rfe1–+) 21.Qe4 hg3 (21...Bb3?! 22.Qf5 hg3 23.hg3 Bg3 24.fg3 Qg3 25.Bg2–+) 22.fg3 Qh7 (22...Bb3?! 23.Qf5 Bg3 24.hg3 Qg3 25.Bg2–+) 23.Rf2 Bb3 24.Bg4 Nh6 25.Qh7 Rh7 26.Be2 f5 (26...f5 27.Re1 Be7–+) 0–1. Dol,Martin – Lucas,Fred, corr, 1983.

6.Be2 a5 7.b5 (7.Nc3 A) worse is 7...ab4 8.ab4 Ra1 9.Qa1+/– (9.Ba1?! f6=); B) 7...c6+=) 7...a4 (7...Be7!?+=) 8.0–0= Be7 9.c3 (9.d4 ed4 10.Nd4 Ngf6=) 9...Bf6 (9...Ngf6 10.d3+=) 10.Qc2 Ne7 11.Rd1 (11.d3 0–0+=) 11...Bf5 (11...e4 12.Nd4 Nc5 13.c4+=) 12.d3+= Nc5 (12...e4 13.de4 Be4 14.Qc1+=) 13.Nbd2= Nd3?? (better is 13...0–0=) 14.Bd3+– e4 15.Ne4! de4 (15...de4 16.Be4 Double attack; 15...Be4 16.Be4 Combination) 16.Be4 Be4 17.Qe4 Qb6 18.Qb4 (18.Rab1 Qb5 19.c4 Qc6 20.Qc6 bc6 21.Bf6 gf6+–) 18...0–0 (18...c5 19.Qg4 0–0 20.Rab1+/–) 19.Rd2 (19.Rd7 Ng6+–) 19...c6 (19...Rfe8 20.Rad1+/–) 20.bc6 Qb4 21.cb4 (worse is 21.ab4 bc6 22.Rd6 Rfc8+/–) 21...Bb2 22.Rb2 bc6 (22...Nc6!? 23.Rc1 Rfd8+/–) 23.Rc2+– Rac8 24.Rac1 Rfd8 25.Kf1 Rd3 26.Rc3 Rcd8 27.Nd4 Rd2 28.Nc6 Nc6 29.Rc6 Ra2 30.Rc8 Rf8 31.Rf8 Kf8 32.Rc3 Rb2?? 33.Rc8 Ke7 34.Ra8 g5 35.h3 h5 36.g4 h4 37.Ra4 Ke6 38.Ra5 f6 39.Kg2 Kd6 40.Ra6 Ke5 41.Ra5 Kd6 42.b5 Kc5 43.a4 Rb4 44.Ra6 f5 45.gf5 g4 46.f6 Rb2 47.f7 gh3 48.Kh3 Rf2 49.Ra7 Kb6 50.Re7 Kc5 51.Kh4 Kd6 52.Ra7 Ke6 53.b6 (53.b6 Kd6 54.Kg5+–) 1–0. Franco Rincon,David (1685) – Villanueva Ortega,Ruben (1790), Madrid ESP, 2014.

6.Be2 f5 7.0–0 Ngf6 8.Nc3 a5?? (8...Qb6 9.Ng5+=) 9.d4 (better is 9.Nb5 Qb6 10.Ne5 ab4 11.ab4+–) 9...e4= 10.Nb5 Qb6 11.Ng5 Rc8?? (11...Bg8 12.ba5 Ra5 13.a4=) 12.Ne6 (better is 12.ba5 Qa5 13.Ne6+–) 12...Qe6= 13.ba5 c6 14.Nc3 Ra8 15.a6 ba6 16.Na4 Bd6 17.c4 0–0 18.c5 Bc7 19.Bc3 Ng4 20.h3 Nh6 21.Rb1 f4 22.ef4 Bf4 23.Rb7 Nf5 24.Bg4 Rae8 25.Re1 Nf6 26.g3 Bb8=+ 27.Bf5 Qf5–/+ 28.Kg2 Nh5 29.Qe2 e3!–+ (29...e3 30.Rb8 Qf2 31.Qf2 Rf2 (31...ef2?? 32.Rbe8 f1Q 33.Rf1 Re8 34.Re1 Re1 35.Be1+–) 32.Kg1 Rb8 33.Re3 Rbf8–+) 0–1. xadrezpg (2340) – thotares (2405), net–chess.com, 2010.

6.Be2 f5 7.Ng5 Be7= 8.Ne6 Qe6 9.d3 Ngf6 10.Nd2 0–0 11.0–0 Bd6 (11...a5 12.c3=) 12.c4= c6 13.c5 Bc7 14.e4 Rad8 15.Qb3 Kh8 16.ed5 Nd5 17.Rfe1 (17.g3 b6=) 17...Qh6 (17...e4 18.de4 fe4 19.Nc4=) 18.Nf1 (18.Nc4 b5 19.cb6 ab6=) 18...Rde8 19.Bf3 N7f6 20.Qc4 Qg6 21.Bc1? e4–/+ 22.de4 fe4 23.Bd1 Nd7 24.Qe2 Ne5 25.Qh5? Qf6–+ 26.Ra2 Nd3 27.Bg5 Qd4 28.Be3?! Ne3 29.fe3?? Qf6 30.Qe2 Qc3 31.Nd2 Ne1 32.Qe1 Rd8 33.Rc2 Qe5 34.Qh4 Qa1 35.Qe1 Rd3 36.Rc3 Qc3 (36...Qc3 37.Bh5 Rd2 38.g3 Rg2 39.Kg2 Qe1 40.Bf3 ef3 41.Kh3 Qe3 42.Kg4 Qe6 43.Kh4 Bd8 44.Kh5 Qf5) 0–1. Achtmann,Armin – Weber,Rainer (2170), Wiesbaden GER, 2011.

6.Be2 h6 7.Qc1 Be7 8.c4= c6 9.c5 Qc7 10.0–0 Bf6 11.Qc2 Ne7 12.e4 Ng6 13.d4 Nf4 14.de5 Ne5 15.Ne5 Be5 16.Be5 Ne2 17.Qe2= Qe5 18.Nd2 0–0 19.Rfe1 a5 20.ed5 Qd5 21.Red1 ab4 22.ab4 Ra1 23.Ra1 Qd4 24.Rb1 Rd8 25.Nf3 Qc3 26.h3 Ra8 27.Qd2 Qf6 28.Qd4 Qg6 29.Ra1 Ra1 30.Qa1 ½–½. Sellmer,Dirk – Von Lenski,Michael, Schleswig Holstein–ch, 1992.

6.Ng5 Ngf6 7.Nc3 c6 8.Ne2 Be7 9.f4 Bg4 10.h3 (10.Nf3!? ef4 11.Nf4=+) 10...Be2–/+ 11.Be2 ef4 12.0–0 h6 13.Nf3 fe3 14.de3 0–0 15.Qe1 Ne4 16.Bd3 Bf6 17.Nd4 Rae8 18.Rf3 Ne5 19.Be4 de4 20.Nf5?? (better is 20.Rf1–/+) 20...Nf3–+ 21.gf3 Qe6 22.Nd4 Qh3 23.f4 (23.Qf1 Qf1 24.Rf1 ef3 25.Rf3 Re4–+) 23...Rd8 24.Rd1 (24.c4–+) 24...Rd5 25.Rd2 (25.Qe2 Rh5 26.Qh5 Qh5 27.Rd2–+) 25...Rfd8 (25...Rh5 26.Rh2 Qh2 27.Kf1 Bh4 28.Qh4 Rh4 29.Ke1 Rd8 30.Kf1 Qh1 31.Kf2 Rh2 32.Kg3 Qg2#) 26.Rh2 Qd7 27.Qg3 Kh7 28.Rg2 (28.Rd2 Qc7 29.Kf2 Qe7–+) 28...g6 (28...b6 29.c4 Rh5 30.Qe1–+) 29.Rh2 Rd4 30.Bd4 Bd4 31.ed4 Qd4 32.Kg2 Qd1 33.Rh6 (33.Kh3 Rd2 34.Rd2 Qd2 35.f5–+) 33...Kh6 34.Qg5 Kh7 35.Qh4 Kg8 (36.Qd8 Qd8–+) 0–1. Otte,Marco – Stallinga,Hein, Wag.Intcomp Wageningen, 2001.

6.Ng5 Ngf6 7.Ne6= Qe6 8.g3 (8.Nc3 Bd6=) 8...Bd6 9.Bg2 0–0 (9...a5 10.b5=+) 10.0–0 Nb6 11.d3 (11.f4 Nc4 12.Be5 Be5 13.fe5 Qe5=+) 11...c6 12.Nc3 Rad8 13.Rb1 e4 (13...Rfe8 14.Qe2=+) 14.Ne2 Be5 (14...Rfe8 15.Nd4 Qd7 16.Nb3=+) 15.Nf4 (15.Nd4 Qd6=) 15...Qe7 16.Be5 Qe5 17.Qd2 d4 (17...Rfe8 18.Rfd1=+) 18.ed4 (18.Rbd1 Na4=) 18...Qd4=+ 19.Ne2 (19.Rfe1 Rfe8=+) 19...Qd6 20.Qg5? (better is 20.Rbd1!?=+) 20...ed3–+ 21.cd3 h6 22.Qh4? Qd3–/+ 23.Nf4 Qd7 24.Nh5 Nh5 25.Qh5 a6 26.Rbd1 Qe6?? 27.Rd8+– Rd8 28.Qa5 1–0. Campos Calvo,Sotelo Juan – Gomez,Arturo, Villagarcia op, 1996.

6.h3 Be7 7.d3 Ngf6 8.Nbd2 0–0 9.Be2 h6 10.c4 c6 11.d4 e4 12.Ne5 Nh7 13.Nd7 Bd7 14.c5 Qc7 (14...Qg6 15.Kf1+=) 15.a4 f5 16.b5 f4 17.Nf1 (17.ef4 Qf4 18.0–0 Ng5+=) 17...fe3 18.fe3 (18.Ne3!? Qa5 19.Qd2 Qd2 20.Kd2 Rf2 21.Rhf1–/+) 18...Bh4–/+ 19.Kd2 Rf2 20.Kc1 (20.g4!?–/+) 20...Rg2–+ 21.Nd2 Rf8 22.Bf1 Rh2 23.b6 ab6 24.cb6 Qg3 25.Rh2 Qh2 26.Qh5 Be1 (26...Be1 27.Qe2 Bd2 28.Kd2 Rf2–+) 0–1. Pozanco Romasanta,Marc (1725) – Cerezo Gaston,Alberto, ESP–ch U14 Padron, 2008.

6.Nc3 c6

7.Na4 b6 8.d4 e4 9.Nd2 Ngf6 10.c4 Be7 11.Qc2 0–0 12.Be2 Rac8 13.c5 bc5 14.Nc5 Nc5 15.bc5 Qc7 16.Bc3 Rb8 17.Qa4 Ng4 18.Ba5 Qd7 19.Nb3 f5 20.Bd2 Bd8 21.h3 Nh6 22.0–0–0 (better is 22.Rb1!?+=) 22...Bc7+= 23.g3 Nf7 24.Kc2 Ng5 25.Rb1 Nf3 (25...Bd8 26.Bc3+=) 26.Ba5= Rfe8 27.Bc7 Qc7 28.Na5 Bd7 29.Ba6 g5 30.Rb7 Rb7 31.Bb7 Re6 32.Rb1 f4 33.g4?? (better is 33.gf4 gf4 34.Ba6=) 33...fe3–+ 34.Ba6 Qh2 35.Rf1 Nd2 36.Rd1 Qf2 37.Qb4 (37.Kc3 Rh6 38.h4 Bg4–+) 37...Nc4 (better is 37...Nf3 38.Kc1 e2 39.Be2 Qe2 40.Qb8 Kf7 41.Qa7–+) 38.Kc1 e2 39.Re1 Qe3 40.Kc2 Na3 (40...Qa3?! 41.Qa3 Na3 42.Kb3–+) 41.Kb2 Nb5 42.Nb3 Kf7 43.Bb5 cb5 44.Nc1 a5 45.Qa5 Qd4 46.Qc3 Qc3 47.Kc3 Rf6 (47...Rh6 48.Ne2 Rh3 49.Kd4–+) 48.Ne2 Rf3 49.Kb4 Rd3 (49...Rh3!? 50.Nc3 Rd3 51.Nb5 Bg4 52.c6–+) 50.Nc3 Rd4 (50...Rh3?! 51.Nd5 Bc6 52.Nc7–+) 51.Ka5 b4 52.Ne2 Rc4 53.Kb6 d4 54.Ng3 d3 (better is 54...e3–+) 55.Ne4+= Re4 56.Re4 b3 57.Re1 b2 58.c6 d2?? (better is 58...Be6 59.c7 d2 60.Rf1 Ke7–/+) 59.Rf1+– Ke7 60.cd7 Kd7 61.Kc5 Ke6 1–0. Virtic,Franc – Svensek,Marjan, SLO–chT East, 2005.

7.Rc1 Be7 8.Na4 Nh6 (better is 8...Qc7!?+=) 9.Nc5+= f6 10.Nb7 Qc7 11.Na5 c5 12.c3 (12.c4!?+=) 12...e4= 13.Ng1 c4 14.Qa4 Rc8 (14...0–0 15.Ne2=) 15.Ne2 0–0 16.Nd4 Nb6 17.Qc6 Bd7 18.Qc7 Rc7 19.Be2 Na4 20.Ba1 a6 21.f3 Bb5? (better is 21...f5+=) 22.fe4 de4 23.Ne6 Rfc8 24.Nc7 Rc7 25.0–0 Bd6 26.Rf2 Kf7 27.Rcf1 Ke6 28.g4 Nf7 29.Kg2 Be5 30.h4 g5 (30...Nd6 31.Kh3+–) 31.h5 h6 32.Bd1 Nd6 33.Bc2 Ke7 34.Kh3 Ke6 ½–½. Ryzlak,Jerzy – Symbor,Przemyslaw (2255), Warszawa Cup Poland, 1987.

7.d4 e4 8.Ng5 Bf5 9.g4 Bg6 10.Nh3 b5 (better is 10...h5!?+=) 11.Nf4+= a5 12.ba5 (12.Ng6 hg6 13.ba5 Ra5+=) 12...Ra5 13.Qd2 Ra8 14.a4 b4 15.Nd1 (15.Ng6? bc3 (15...Qg6?! 16.Ne2+=; 15...hg6?! 16.Nd1–/+) 16.Bc3 hg6–+) 15...Ngf6 16.Be2 Nb6 Exerts pressure on the isolated pawn 17.h4 (worse is 17.Ng6 hg6 (17...fg6?! 18.0–0–/+) 18.f4 ef3 19.Bf3 Ra4 20.Ra4 Na4–+) 17...h6 (worse is 17...Ra4 18.h5 Nh5 19.Ra4 (worse is 19.Rh5 Bh5 20.Nh5 Ra1 21.Ba1 g6–/+; 19.Ng6?! hg6 20.Ra4 Na4+/–) 19...Nf4 20.Ra6 Ne2 21.Rb6+/– (worse is 21.Qe2 Qb8–/+); 17...Na4 18.h5 Bh5 19.Nh5 (worse is 19.Rh5 Nh5 20.Nh5 g6–/+) 19...Nh5 20.gh5+/–) 18.a5 Nc4 19.Bc4 dc4 20.c3 c5 21.Ng6 fg6 22.Qe2 Qe6 23.f3 (23.f4!?–/+) 23...Bd6–+ 24.dc5 Bg3 (worse is 24...Bc5 25.f4 b3 26.Rg1–/+) 25.Kf1 (25.Nf2 0–0 26.0–0–0 (26.cb4 ef3 27.Qc2 Bf2 28.Qf2 Ne4–+) 26...ef3 27.Qf3 Bf2 28.Qf2–+) 25...ef3 26.Qf3 0–0 27.Kg2 (27.Qe2 Ne4 28.Kg1 Rad8–+) 27...Ne4 28.Qe2 Rad8 29.Rf1 (29.Bc1 Rd1! 30.Qd1 Nc3 31.Qd4–+) 29...Rf1 30.Kf1 Rd2 0–1. lesg – agata (1835), gameknot.com, 2005.

7.Be2 f5 8.d4 e4 9.Nd2 Ngf6 10.Na4 Be7 11.Nc5 Rb8 12.c4 0–0 13.a4 Kh8 14.Ba3 Nc5 15.dc5 Qc7 16.Qc2 f4 17.ef4 Qf4 18.0–0 d4 19.Qc1 Bg4 20.f3 Qe3 Black prepares the advance d3 21.Rf2 d3 22.Bd1 Qe1 (better is 22...ef3!? 23.Bf3 Bf3 24.Nf3 Qc1 25.Rc1 Ne4–/+) 23.Rf1= Qe3 24.Rf2 Qe1 25.Nf1 ef3 26.Bf3 Qe6 27.Qe1 Qd7 28.Nd2 Rbe8 29.Qf1 h6 30.Re1 Bf5 31.Bb2 Ng4 32.Bg4 Bg4 33.Nf3? Bf6?? 34.Ne5= Re5 35.Be5 d2 36.Rd1 Bd1 37.Qd1 Qd3 38.Bd6?? Re8 39.Rd2 Qc4–/+ 0–1. Klasmeier,Hartmut (1990) – Dickel,Jens (1970), NRW Class1, 2004.

7.Be2 Ngf6 8.0–0 Be7 9.Ng5 Bf5 (9...0–0 10.Ne6 fe6 11.b5+=) 10.f4 ef4 11.Rf4 Bg6 12.Nf3 Nh5 13.Rg4 Bd8 (13...f5 14.Rd4 Bf6 15.Rd3=) 14.b5 c5 15.Nh4 Bc7 16.Nf3 0–0 17.Rh4 Bd8 18.Rh3 Re8 19.Nh4 Bh4 20.Bh5 Bf6 21.Bg6 hg6 22.d3 Re7 23.Qe2 Rae8 24.Rf1 c4 (24...Re3 25.Rf6 (25.Qe3? Re3 26.Re3 Bd4–+) 25...Re2 26.Rd6 Rc2 27.Kf1+=) 25.Qf2= cd3 (25...Qc5 26.d4 Qd6 27.a4+=) 26.cd3 Ne5 27.Qe2 Qe6 28.Rg3 Bh4 29.Rh3 Bg5 30.Rg3 Ng4?? Now all is on e3 (better is 30...Bh4 31.Rh3 Bf6=) 31.Rg4 Be3 32.Kh1 Qd7 33.Ra4 d4 34.Nd1 Qb5 35.Qc2 Bf4 36.Bd4 Re2 37.Qc4+– Qf5 38.Bg1 b5 39.Rf4 bc4 40.Rf5 gf5 41.dc4 Re1 42.Nb2 Ra1 The mate threat is Ree1 43.Nd3 Re3 44.Nf4 Ree1 45.Nh3 g5–+ Threatening mate... how? 46.Ra5 g4 Threatening mate: gxh3 47.Rf5 f6! 48.Rf4 gh3 49.Rg4 Kh7 50.gh3 f5 51.Rh4 Kg6 52.Kg2 Rg1 53.Kf2 Rgc1 54.Rd4 Ra3 (54...Ra3 55.Rd6 Kh5–+) 0–1. Baerschneider,Alfred – Rudbeck,Joergen, corr 3GMM½–03, 1999.

6.c4 dc4

7.Qc2 a5 8.Bc4 Qc6 9.Bb3 (9.Bd3 Qc2 10.Bc2 ab4 11.ab4 Ra1 12.Ba1 Bd6=+) 9...Bb3 10.Qb3 ab4 11.0–0 Nc5 (11...Qa4 12.Qc4 ba3 13.Qc7=+) 12.Qb4 e4 13.Nd4 Qg6 (13...Qh6 14.Nb5 Ra4 15.Qc3=) 14.Rc1 Qb6 (14...Ra4 15.Qb5 c6 16.Nc6 Qc6 17.Qc6 bc6 18.Nc3–+) 15.Nb5 (15.Qb6 cb6 16.Nb5 Kd7=) 15...Ra4 (better is 15...Ne6!? 16.Qb3 Ra6=+) 16.Nc7+/– Qc7 17.Qa4 Na4 18.Rc7 Nb2 19.Rb7 Na4 20.Nc3+– Nc5 21.Rb8 Ke7 1–0. Bonetti,Shane (2125) – Sternik,Ryszard (1920), EM KO, 2006.

7.Qc2 b5 8.Nc3 Rb8 9.d3 Ngf6 10.Rd1 Qc6 11.Rc1 a6 12.dc4 Bc4 13.Nb1 Bd6 14.Nbd2 a5 15.Nc4 bc4 16.Bc4 Qe4 17.Bf7 Ke7 18.Qb3 Nf8?? (better is 18...ab4 19.a4 Nc5 20.Rc5 Bc5 21.Be5 Kf8+=) 19.0–0+– ab4 20.Rc4 Qf5 21.Rfc1?? (better is 21.ab4 Ng6 22.e4+–) 21...N6d7–/+ (21...Kf7 22.Rc7 Ke8 23.Qf7 Kd8 24.Ne5+–) 22.Be5 Ne5 (22...Qf7? 23.Bd6 cd6 24.Re4 Ne6 25.Ng5+–) 23.Ne5 Be5 24.Bd5 Nd7 25.f4 ba3 26.Qd1? (better is 26.Qa3 Bd6 27.Qa1–+) 26...Bd6 27.e4? (27.Qd4 Qf6 28.Qd3–+) 27...Qf4 28.e5 Qe3 29.Kh1 Ne5 30.Re4 Qg5 31.h4 (31.g3 Rb2 32.Rf4 Rf8 33.Rf8 Kf8 34.Qf1 Ke7–+) 31...Qg3 (32.Qd4 Rb4–+) 0–1. Stocker,Rupert (2110) – Hock,Martin (2135), Bayern Landesliga Sued, 1998.

7.Qc2 b5 8.d3 e4 (8...cd3 9.Bd3 a6 10.Nc3=) 9.de4 c5 10.Bc3 f6 11.Be2 a5 (11...Rd8 12.0–0=) 12.bc5 b4?? (better is 12...Nc5 13.Nd4 Bd7+=) 13.cd6+– (13.cd6 bc3 14.Nd4+–) 1–0. Vettenburg – Michiels, corr Belgium, 1999.

7.Qc2 b5 8.d4 =+.

7.Qc2 f6 8.Bc4= Bc4 9.Qc4 Nb6 10.Qc2 g6 (10...c5!?=) 11.d4+/– Bg7 12.de5 fe5 13.0–0 (13.Nc3 Qe7+/–) 13...0–0–0 14.Nbd2 Qd3 15.Rac1 Qc2 16.Rc2 Re8 17.Ne4 Kb8 18.Nc5 Nh6 19.a4 Nf7 20.Rfc1 Re7+= 21.b5 Rd8 22.Nd2 Nd7 23.Ndb3 Nc5 24.Nc5 Bf8 25.h3 Nd6 26.Rd2 Rde8 27.Nd3 Bg7+= 28.Ba3 Ne4 29.Be7 Nd2 30.Bb4 Ne4 ½–½. Miralles,Gilles – Lalic,Bogdan, Germany, 1982.

7.Qc2 f6 8.Bc4= Qc6 9.Bb3 Qc2 10.Bc2 Bd6 (10...a5 11.b5=) 11.0–0 (11.d4 a5 12.b5 Bc4=) 11...0–0–0 (11...a5 12.Be4=) 12.Nc3 (12.d4 Ne7+=). Hunstock,Joachim – Tuchtenhagen,Harald, corr SOK–89–52, 1989.

6.d4 e4

7.Nfd2 a5 8.ba5 Ngf6 9.a6 ba6 10.Nc3 =+.

7.Nfd2 a5 8.b5 =.

7.Nfd2 a5 8.c4 =+.

7.Nfd2 Nb6 8.c4= Qd7 9.cd5 Bd5 10.Nc3 Nf6 11.Qc2 Qe6 12.Nd5 (12.Nb5 Bd6 13.Qc7 Be7+/–) 12...Nbd5+= 13.g3 (13.Bc4 Bd6=) 13...0–0–0 14.Bg2 Re8 15.0–0 (15.Rc1 Bd6=) 15...Bd6 (15...h5 16.Rac1=) 16.Nc4 g5 (16...Kb8 17.Nd6 Qd6 18.h3=) 17.Ne5 (17.Rac1+=) 17...Be5 (better is 17...h5=) 18.de5+– Ng4 19.Qe4 (19.Be4 Nde3 20.fe3 Ne3+–) 19...Rd8 (19...c6 20.Rfc1 Nc7 21.Qd4+/–) 20.Rad1 c6 21.h3 h5? (21...Nh6 22.b5+–) 22.Bf3 Kb8? 23.hg4+– hg4 24.Bg4 Qh6 25.Qg2 Qg7 26.Rd2 Qf8 27.Rfd1 Qe7 28.e4 Nc7 29.e6! Rd2 30.Rd2 Rf8 31.Rd7 (31...Re8 32.Re7 Re7 33.ef7 Rf7 34.Be5+–) 1–0. Breschigliaro,R – Freslon,M, Val Maubuee op2, 1990.

7.Nfd2 c6 8.c4 Be7 9.Nc3 a6 (9...Nh6 10.Be2=) 10.b5 (better is 10.Nde4!? de4 11.Ne4+=) 10...ab5 11.cd5 Bd5 12.Nde4 Qe6 13.Nd5 Qd5 14.Nc3 Qe6 15.Bd3 (15.d5!? Qh6 16.Be2+/–) 15...Nb6 16.0–0 Nf6 17.e4 Nc4 The pressure on the isolated pawn grows 18.Bc4 Qc4 19.Rc1 Qe6 (better is 19...Rd8!? 20.d5 0–0+=) 20.d5+/– Qe5? (better is 20...Qd7 21.Qe2 Qg4+/–) 21.Nb5!+– Qb2 (21...cb5 22.Be5 Discovered attack) 22.Nc7 Kd7 23.Na8 Ra8 24.dc6 Ke8 25.Rb1 Qe5 26.cb7 Rb8 27.f4 (27.Re1 Kf8+–) 27...Qc5 (27...Qe4 28.Qc1 Qd4 29.Kh1+/–) 28.Kh1+– Ne4?? (better is 28...Qc6 29.e5 Nd7+–) 29.Qa4 (29.Qa4 Kf8 30.Qe4+–) 1–0. Ijzermans,Cees (2020) – Boucquet,Emile (2160), Brasschaat Open, 2015.

7.Nfd2 c6 8.c4= Be7 9.Be2 Nh6 (9...Ngf6 10.c5 Qc7 11.Nc3=) 10.Nc3 0–0 11.Nb3 (11.0–0 Nf5=) 11...Nf6 (11...dc4 12.Ne4 Qc7 13.Nbc5 Nc5 14.Nc5=) 12.Nc5 Bc8 13.Rc1 b6 14.Nb3 Bd7 15.Qc2 (15.c5 Qb8=) 15...Rfc8 16.c5 Qc7 17.h3 Nf5 18.0–0 Rcb8 19.Rb1 (19.Rfd1 Qb7=) 19...Nh4 (19...Be6 20.Rbc1 Qd7 21.b5=) 20.Rfc1 Bd8 (20...b5 21.Ra1=) 21.Qd1 (21.b5 cb5 22.Nb5 Bb5 23.Bb5 bc5 24.Qc5 Qc5 25.Rc5 Rb6=) 21...b5 22.Ra1 Qc8 23.Qf1 Bc7 24.Rc2 Bf5 25.a4 Nf3 26.Kh1 ba4 27.Na5 Nh2 28.Qd1 Qd7 29.Ra4+= Bh3 30.Nc6 Bg2 31.Kg2 Qc6 32.Bc1 Qd7 33.Rca2 Qf5 34.Ra7 Qg5 35.Kh3 Ra7 36.Ra7 Qf5 37.Kg2= Nfg4 38.Bg4 Ng4=+ 39.f4 Qg6 40.Qg1 Ne3 41.Kf2 Ng4 42.Ke1=+ Bd8 43.Be3 h5 44.Kd2 Qf5 45.Ra1? Bc7–+ (46.Ke1 Ne3 47.Qe3 Bf4 48.Nd5 Qd5 (48...Be3?! 49.Ne7 Kf8 50.Nf5–/+) 49.Qf4 Rb4–+) 0–1. Benassi,Aspasio – Caressa,Marco, Anniversario FSI A, 2001.

7.Nfd2 c6 8.c4= Ngf6 9.Be2 =.

7.Nfd2 Qc6 8.Nc3 a6 9.Be2 =+.

7.Nfd2 Qc6 8.Be2 =+.

7.Nfd2 Be7 8.c4 c6 9.Nc3 f5 (9...Ngf6 10.Be2=) 10.cd5+= cd5 (10...Bd5 11.g4 g6 12.gf5 gf5 13.Rc1=) 11.Nb5 Qb8? (better is 11...Qb6!? 12.Rc1 Kf7+=) 12.Rc1+– Bd8 13.Rc8! Qc8 Theme: Deflection from d6 14.Nd6 A double attack 14...Ke7 15.Nc8 Rc8 16.Nb3 Ngf6 17.Nc5 Rc7 18.a4 (18.Be2 Nb6+–) 18...Kf7+/– 19.Be2 Be7 20.0–0 Rhc8 21.g4 (21.a5 Nf8+/–) 21...g6 (21...Bc5!? 22.dc5 fg4=) 22.f3 Bc5 (22...ef3 23.Bf3 fg4 24.Bg4 Bg4 25.Qg4+/–) 23.dc5 b6 (23...a5 24.ba5 Rc5 25.gf5 Bf5 26.fe4 Ne4 27.a6+/–) 24.g5 (24.Ba6 bc5 25.Bc8 Rc8+–) 24...Ne8 (24...ef3 25.Ba6 (25.gf6 fe2 26.Qe2 bc5+=; 25.Bf3?! Ne4+–) 25...Ne4 26.Bc8 (26.Rf3?! bc5 27.Bc8 Rc8+=) 26...Rc8 27.Qd4 f2 28.Kg2+–) 25.fe4 (25.cb6!? ab6 26.Qd4 ef3 27.Rf3 Rc2+–) 25...de4 26.Ba6 (26.cb6 Nb6 27.Ba6 Rb8+–) 26...Rb8+/– 27.Qd4 bc5 28.Qh8?? (28.bc5 Nc5 29.Bb5+–) 28...Nf8?? (better is 28...Nef6! 29.Bf6 Rh8 30.Bh8 cb4–+) 29.Be5 (better is 29.bc5!? Rb4 30.Bb5+–) 29...cb4+/– 30.Bc7 (30.a5 Rc6+=) 30...Nc7+= 31.Qf6 (31.Be2 Rb7+=) 31...Kg8= 32.Be2 b3 33.Qe5 Rb7 34.a5 b2? (better is 34...Nd5!? 35.Bc4 Nf4 36.Be6 N4e6+/–) 35.Rb1+– Nd7? (35...Nd5 36.Rb2 Rb2 37.Qb2 Ne3 38.Qd4+–) 36.Qd4 (36.Qd6!? Nf8 37.a6 Rb8+–) 36...Nb5 37.Bb5 Rb5 38.Rb2 Ra5 39.Qd6 Nf8 (39...Ra1 40.Kf2 Kf7+–) 40.Rb8 Ra1 (40...Bc8 41.Rc8 Ra1 42.Kg2 Ra2 43.Kh3 Rh2 44.Kh2 h5 45.Rf8 Kg7 46.Qe7) 41.Kf2 (41.Kg2 Ra2 42.Kh3 Rh2 43.Kh2 Bc8 44.Rc8 h5 45.Rf8 Kg7 46.Qe7) 41...Ra2 (41...Rf1 42.Kf1 Bc8 43.Rc8 h5 44.Rf8 Kg7 45.Qe7) 42.Kg3 f4 (42...Rg2 43.Kg2 Bc8 44.Rc8 h5 45.Rf8 Kg7 46.Qe7) 43.Kf4 (43.ef4 Bc8 44.Rc8 Ra3 45.Qa3 Kf7 46.Qf8 Ke6 47.Rd8 h6 48.Qf6) 43...Rf2+– 44.Kg3 (better is 44.Ke4 Bg4 45.Qg3 Bf5 46.Ke5+–) 44...Rf3 45.Kg2 Bh3 46.Kg1 Rf1 0–1. De Visser,Arno – di Stefano, Biel, 1984.

7.Nfd2 Ngf6 8.c4= dc4 9.Nc3 Bd5 (9...a5 10.Bc4 Qb6 11.b5+=) 10.Qc2 (10.Nd5 Qd5 11.Bc4 Qg5+=) 10...Qe6 (10...c6!? 11.Nde4 Ne4 12.Ne4 Qe7=) 11.Nd5+/– Qd5 12.Bc4 Qf5 13.Ba2 Bd6 (13...Qg6 14.g3+=) 14.Bb1+/– Qg4 (14...Qg6 15.g3+/–) 15.0–0 (15.Ne4?! Qg2 16.Nd6 cd6=) 15...Qh4 16.h3 g5 17.Ne4 g4 18.Nd6 cd6 19.g3 Qh3 20.Qc7 d5 (20...h5 21.Qb7 Rb8 22.Qg2+/– (22.Qa7? h4–+)) 21.Qb7+– Rb8 22.Qa6 h5 23.Rc1 h4 24.Rc8 Ke7 25.Rh8 Rh8 26.Qf1 hg3 27.Qg2 gf2 28.Kf2 g3! 29.Kg1 (29.Qg3 Ng4) 29...Qg4 30.Bd3 Rh2 31.Qf1 Rf2 (32.Qg2 Rg2 33.Kg2 Nb6–+) 0–1. Neumann,Andreas – Baeumer,Lars, OWL–ch U20 Enger, 1992.

7.Nfd2 Nh6 8.c4 c6 9.Nc3 Be7 10.cd5 (10.Be2 0–0=) 10...cd5 11.Nb5 Qb6 12.Rc1 (12.Nc3 0–0=) 12...0–0 13.Nc7 Rac8 14.Ne6 Qe6 15.Nb3 b6 16.Ba6 Rc1 17.Qc1 f5 (17...Bd6 18.Bb7=) 18.Qc7+= Bd6 Black prepares the advance f4 19.Qa7 f4 20.Bc1 (20.Bb5 Nf6 21.ef4 Bf4=) 20...fe3= 21.Be3 Ng4 22.h3 (22.Be2 Ndf6 23.Qb7 Bh2+=) 22...Ne3 23.fe3 Qh6 24.Kd2 (24.Qd7 Qe3 25.Kd1 Qb3 26.Ke1 Bg3 27.Kd2 Rf2 28.Be2 Re2 29.Ke2 Qd3) 24...Rf2 (24...Qe6 25.Rf1+=) 25.Be2 Nf8 (25...Qe6 26.Qa8 Nf8 27.g4+=) 26.Qb6 Ne6 (better is 26...Rg2!? 27.Qb5 Qg5+/–) 27.Re1 Bc7? (better is 27...Nf8 28.Nc5 Bc5 29.bc5 Qe6+–) 28.Qc6 Rg2 (28...Kf8 29.Qd5 Qg6+–) 29.Qe8 Nf8 30.Rf1 (30.Rf1 g5 31.Qf7 Kh8 32.Qc7 Re2 33.Ke2 Qh5 34.Ke1+–) 1–0. Kukk,Sander (2180) – Abozenko,Georg (1980), Tallinn Estonia, Men Championshipsemifi, 2015.

7.Ne5 0–0–0 8.c4 =.

7.Ne5 f6 8.Nd7 Qd7 9.b5 (9.c4 dc4 10.Nc3 Bd5=) 9...Bd6+= 10.Nd2 Ne7 11.c4 c6 (11...dc4 12.Nc4 0–0 13.Qc2=) 12.Qb3 (12.bc6 bc6 13.c5 Bc7=) 12...0–0 (12...Bc7 13.bc6 Nc6 14.Bc3= (14.Qb7? Rb8 15.Qa6 Rb6–+)) 13.a4 (13.bc6 A) 13...Nc6?? 14.cd5 Nd4 15.Bd4+– (15.ed4?! Bf7+–; 15.de6?! Nb3 16.ed7 Na1 17.Bc4 Kh8 18.Ba1 Ba3+–); B) 13...Qc6?! 14.c5 Bb8 15.Rb1=; C) 13...bc6 14.cd5 Bd5= (worse is 14...Nd5 15.Ne4 Rab8 16.Qc2+/–)) 13...f5+= 14.g3 (14.c5 Bc7+=) 14...g5 Black prepares f4 (14...Bc7 15.Ba3+=) 15.Ba3 White prepares the advance c5 (15.c5 Bc7=) 15...f4 (15...Ba3 16.Ra3 Rac8 17.c5=) 16.Bd6+= Qd6 17.c5 White prepares the advance b6 (17.gf4 gf4 18.c5 Qd7=) 17...Qd7= 18.gf4 gf4 19.Rg1 (19.a5 Kh8+=) 19...Kh8= 20.b6 (20.Qb2!? fe3 21.fe3=) 20...fe3+= 21.fe3 (21.Qe3 ab6 22.cb6 Qd6–/+) 21...Bg4–/+ 22.Ra2? (better is 22.Be2!? Be2 23.Ke2–/+) 22...Qf5–+ 23.Nb1 Qh5 (23...Qf6 24.Rag2 Qh4 25.Rg3 Nf5–+) 24.Be2+= Bf3 (24...Qh2 25.Rg4 h5–/+) 25.Rf1 (25.Bf3 ef3 26.Rf2 ab6–/+) 25...a6 (25...Nf5!?–/+) 26.Bf3+= Rf3 27.Rf3 (27.Nd2 Qh4 28.Kd1 Rf2+=) 27...Qf3 (27...ef3 28.Rf2 Nf5 29.Nd2–/+) 28.Rf2+= Qh1 29.Ke2 (better is 29.Kd2!? Rg8 30.Nc3+=) 29...Rg8–+ 30.Nc3 Rg2 31.Nd1? (31.Qd1 Rf2 32.Kf2 Qh2 33.Ke1 Qg3 34.Kd2 Nf5–+) 31...Qh2 (better is 31...Nf5! 32.Qb2 Rf2 33.Nf2 Qf3 34.Ke1 Qe3 35.Kd1 Nd4–+) 32.Qc3–/+ Nf5 33.Qe1 Ng3 34.Kd2 h5 35.Rg2 Qg2 36.Qf2 Qf2 37.Nf2 Kg7 38.Nh3 Kf6 (38...h4 39.Ke1–+) 39.Ke1 (39.Nf4 Nf5–/+) 39...Kf5 (better is 39...Nf5 40.Kf2 h4–+) 40.Kf2 Kg4 41.Nf4 Nf5 42.Ne6?? (better is 42.Ng6 h4 43.Ne5 Kg5 44.Nc6 Ne3 45.Ne5+– (45.Ke3?? h3 46.Kf2 e3 47.Ke3 h2–+)) 42...Ne3! 43.Nd8 (43.Ke3 h4 Passed pawn) 43...Nd1 (43...h4 44.Nc6 h3 45.Ne5 Kf4 46.Ng6 Kf5=) 44.Kg2?? (better is 44.Ke2 Nc3 45.Kf2–+) 44...e3 45.Nc6 bc6 46.Kf1 (46.b7 e2 47.b8Q–+) 46...Kf3 47.b7 e2 48.Ke1 Nb2 49.b8Q Nd3 50.Kd2 e1Q 51.Kd3 Qd1 52.Kc3 Qc1 53.Kd3 Qc4 (53...Qc4 54.Kd2 Qd4 55.Kc1 Qf4 56.Qf4 Kf4–+) 0–1. Lehr,Thomas – Storbeck,Dirk, 50. LEM Vormeister–Kandi. A, 1995.

7.Ne5 Ngf6 8.c4 c6 (8...dc4 9.Nc4 (worse is 9.Bc4 Ne5 10.de5 Qd1 11.Kd1 Ng4 12.Be6 Nf2 13.Ke2 Nh1–/+) 9...Qc6 10.Na5=) 9.Nd2 Be7 10.Be2 0–0 11.Rc1 a5 (11...Rfd8 12.0–0=) 12.ba5 (12.b5 cb5 13.c5 Qb8+=) 12...Ra5 13.0–0 Rfa8 Increasing the pressure on the isolated pawn on a3 (13...Qc7 14.Nd7 Qd7 15.Nb3=) 14.cd5 (14.c5 Qc7 15.Nd7 Qd7=) 14...cd5 (worse is 14...Bd5 15.Ndc4 Qc7 16.Na5 Ra5 17.Qd2+/–) 15.Nb3 R5a7 16.Bb5 Qb8 17.f3 (17.Nc5!? Bc5 18.Bd7+=) 17...Ba3–/+ 18.Ba3 Ra3 19.Nd7 Bd7 20.Bd7 Nd7 21.fe4 de4 22.Qg4 Qd8 (22...Qd6 23.Rc3 Re8 24.Qf5–/+) 23.Nd2+= Nf6 (worse is 23...Re3 24.Ne4 Qe7 25.Ng3=) 24.Qf4 (24.Rf6 h5 25.Qe4 Qf6 26.Qb7–/+) 24...Qe7 (24...Qe8!?–/+) 25.Rc7= Qe6 26.Rb7 h6 27.h3 (27.Rfb1 Ra2 28.R7b6 Nd5 29.Rb8 Rb8 30.Rb8 Kh7 31.Qe4 Qe4 32.Ne4 Ne3–/+) ½–½. Gretencord,Ulrich (1945) – Kleinsorgen,Horst (1970), DESC, 2002.

7.Ne5 Ngf6 8.Nd2 c6 9.c4 Be7 10.Be2 0–0 11.0–0 Rac8 12.Rc1 Qb8 13.Qb3 Ne5 14.de5 Nd7 15.cd5 cd5 16.f4 ef3 17.Nf3 Nb6 18.Nd4 Rc1 19.Rc1 Qe5 20.Nc6 Qg5 21.Ne7 (worse is 21.Na7 d4 22.Qd3 de3–/+ (22...Qe3?! 23.Qe3 de3 24.Rc7=)) 21...Qe7 22.Bd4 Ra8 23.Qb2 Bf5 24.a4 (24.Bg7? Qe3 25.Kh1 Na4–+) 24...Be4 25.a5 Nc8 26.Qc3 (26.Bg7? Qg5 27.Bh5 Qh5–+) 26...Nd6 27.Qc7 (27.Bg7?? Qg5 28.g3 Rc8–+) 27...Qf8 28.Rc5 Re8 29.Bf3 a6 30.Be4 Ne4 (worse is 30...Re4 31.Rd5 Nb5 32.Qb7 Nd4 33.Rd4+/–) 31.Qb7 Nc5 32.Bc5 Rb8 33.Qa6 Qe8 34.Qd3 Qe5 35.Qd4 Qe6 36.Qf4 Rc8 37.Qd6 Qf5 38.h3 Qd3 39.a6 Qb5 40.a7 Qb7 41.Qb6 Qa8 42.Bd6 1–0. Henke,Simon – Schalkwijk,Peter, RD–2010–0–00048, 2011.

7.Ng5 Bf5 8.Be2 Qh6 9.h4 Be7 10.Nh3 Qh4 (worse is 10...Bh4 11.Nf4 Qg5 12.Nd5+=) 11.Nd2 g5 12.g4 Bg6 13.Nf1 Bd6 14.c4 dc4 15.Bc4? (better is 15.Nd2!?–/+) 15...h5–+ 16.d5? (16.Qb3 Nb6 17.gh5 Rh5–+ (worse is 17...Qh5 18.Ng5 Qh1 19.Bf7 Kd8 20.Bg6+–)) 16...Be5 17.Qc2?? Bb2 18.Qb2 hg4 19.Bb5 0–0–0 20.Qc3 Nb6 21.Bc4 gh3 22.Rc1 Ne7 23.d6 Nc6 24.b5 Rd6 25.Bb3 Rd3 26.Qc2 Rb3! 27.bc6 Ra3 28.cb7 Kb7 29.Qc7 Ka6 30.Rb1 Bh5 31.Qc5 Ra5 32.Qe7 Rc8 33.Nd2 Qg4 34.f3 Qg3 (34...Qg3 35.Ke2 ef3 36.Kd1 f2 37.Nf3 Bf3 38.Kd2 Rd5) 0–1. Rush,Bradley – Schalkwijk,Peter, ZL–2011–0–00938, 2011.

7.Ng5 Ngf6 =.

7.Nfd2 f5

8.c4= Ngf6 9.Nc3 =.

8.c4= Ngf6 9.c5 Qe7 10.Qa4 =.

8.c4 c6

9.c5 Qe7 =.

9.cd5 Bd5 10.Nc3 Ngf6 =.

9.Nc3 Ngf6

10.Rc1 Be7 =.

10.Qc2 Be7 11.cd5 Nd5 (worse is 11...cd5 12.Nb5 Qb8 13.Nc7 Kf7 14.Na8+/–; 11...Bd5?! 12.Nd5 Nd5 13.g4=) 12.g3 (12.Nc4 Qc7=) 12...0–0+= 13.Bc4 b5 (13...N7b6 14.Bb3–/+) 14.Bd5+= Bd5 15.Nb3 (15.g4 a5 16.gf5 ab4 17.Nce4 Be4 18.Ne4 Qd5 19.ab4 Ra1 20.Ba1 Bb4 21.Ke2 Rf5=) 15...Bc4–/+ 16.Ne2 Bd3 17.Qd2 Qh6 18.Na5 Rac8 (better is 18...Nb6!?+=) 19.Nf4= Bd8 20.Nd3 Ba5 21.ba5 ed3 22.Qd3 Qh3 23.Qf1 Qg4 24.f3 Qh5 25.Kf2 c5 26.d5 c4+= 27.Bd4 Nc5 28.Rd1 Rfd8 29.Bc5 Rc5 30.d6 Qh6 31.d7 Qe6 32.Rd4 Rd7 33.Qb1 Re7 34.Re1 Qh6 35.h4 Rce5 36.f4 Rc5 37.Qb4 Qc6 38.Red1 h6 39.Rd6 Qc7 40.Qc3 Rc6 41.Rd8 Kh7 42.Qc2 Rf6 43.Qd2 c3–/+ 44.Qd5 c2 45.Rh1 Rff7 46.Rc1 Qc3 47.Qd2 Rc7 48.Rd3 Qc5 49.Qb4 Qc6 50.Rd2+= Rfd7 51.Rcc2 Qc2 52.Rc2= Rc2 53.Ke1 Rc1 54.Ke2 a6 55.Qf8 g6 56.h5 Rcd1 57.hg6 Kg6 58.Qe8 Kh7 59.Kf3 R1d3 60.g4 fg4+= 61.Kg4 Rg7 62.Kf3 Ra3 63.Qe4 Kh8 64.Qa8 Kh7 65.Qa6 Re7 66.Qb5 Rae3 67.Kg4 Rg7 68.Kf5?? Rf7= 69.Kg4 Rg7 70.Kh4 Ree7 71.a6?? Ref7?? 72.Qe5?? Re7?? 73.Qf5+– Kg8 74.Qc8 Kh7 75.Kh5 Ref7? 76.Qc2 Kh8 77.Kh6 Rf6+/– 78.Kh5 Rf4? 79.Qc8 Kh7+/– 80.Qc2 Kg8?? 81.Qb3+– Rff7 1–0. Schulze,Harald (2135) – Stockmann,Michael (2135), Nuremberg–ch op, 2003.

10.c5 Qc7 =.

10.cd5 Nd5 11.Nc4 Qc7 12.Rc1 Nc3 13.Bc3 Nb6 14.Bd2 (14.Ne5 Bd6=) 14...Be7 (14...Nc4 15.Bc4 Bc4 16.Rc4=) 15.Qh5 g6 16.Qh6 Bf6 17.b5 (17.Ne5 Rd8+=) 17...cb5+= 18.Nb6 Qb6 19.Bb4 a5 20.Bc5 Qc6 21.Rb1 b4 22.ab4 ab4 23.Rb4 Ra1 24.Kd2 Ra2 (24...Ra5 25.Qf4 Rc5 26.dc5 Qd5 27.Rd4 Bd4 28.ed4 Qd4 29.Ke1 Qa1 30.Kd2–+) 25.Ke1 Kf7 (25...Ra5 26.Rb6 Qd5 27.Be2–/+) 26.Rb6–/+ Qa4 Threatening mate... how? 27.Rb7 Bd7 28.Ra7 (28.f3 Qc2 29.Rd7 Ke8 30.Re7 Be7 31.Qf8 Kf8 32.Be7 Ke7 33.fe4 Qd2) 28...Ra1 29.Kd2 Qd1 30.Kc3 Rc1 (30...Rc1 31.Kb2 Rb1 32.Ka2 Qb3#) 0–1. Karpenko,Aleksandr (2000) – Mayorov,Oleg (2505), e–mail, 2002.

10.cd5 Nd5 11.Nc4 Qc7 12.Rc1 Bd6 13.h3 N7f6 14.Be2 f4=/+ 15.Nd5 Bd5 16.Nd6 Qd6 17.ef4 Qf4 18.0–0 0–0 19.Rc3 Rfe8 20.Bc1+/= Qd6 21.Rg3 Rad8 22.Qd2 Rd7 23.Qg5 Rf7 24.Bf4 Qe7 25.Be5 Nd7 26.Bh5+/– Qg5 27.Bf7 Kf7 28.Rg5 Ne5 29.de5 h6+/– 30.Rf5 Kg6 31.g4+– Be6 32.Rf4 Bd5 33.Re1 Re5 34.Rf8 Re7 35.Re3 Rd7 36.Kh2 Kh7 37.Kg3 g5 38.h4 Kg7 39.Rf5+– Kg6 40.a4 a6 41.Re1 b5 42.ab5 ab5+/– 43.Rd1 Ra7 44.h5 Kg7 45.Rdd5 cd5 46.Rd5 Re7 47.Rb5 e3 48.fe3 Re3 49.Kf2 Re6 50.Kf3 Kf6 51.Rc5 Re1 52.Rc6 Kg7 53.Rc7 Kg8 54.b5 Rb1 55.Rb7 Rb4 56.b6 Rf4 57.Ke3 Rg4 58.Rc7 Rb4 59.b7 Rb3 60.Ke4 Rb4 61.Kd5 Rb5 62.Kc4 Rb1 63.Rc8 Kf7 64.b8Q Rb8N 65.Rb8 Kf6 66.Rf8 Ke5 67.Rh8 Ke4 68.Rh6 Kf4 69.Rf6 Ke5 70.Rb6 Ke4 71.h6 Kf5 72.h7 g4 73.Kd4 g3 74.h8Q Kg4 75.Rf6 g2 76.Qg7 Kh3 77.Rh6# 1–0. Kaenel,Hansjuerg – Detter,Peter, SUI–AUT 3th U20, 1970.

10.g3 Be7=+ 11.c5 Qc7 12.a4 (12.b5 0–0=+) 12...0–0–/+ 13.Be2 Rf7 (13...b6 14.0–0=+) 14.0–0 Raf8 15.b5 (15.f3=) 15...g5 (15...b6 16.cb6 ab6 17.bc6 Qc6 18.Rc1=) 16.f4 (16.bc6 Qc6 17.Bb5 Qc7=) 16...gf4 (16...Ng4 17.bc6 Ne3 18.Nb5 Qc6 19.Qb3 Nf1 20.Rf1–+) 17.gf4 (better is 17.Rf4 b6 18.cb6 Nb6 19.a5+=) 17...Rg7 18.Kh1 Kh8 (18...Ng4 19.Bg4 fg4 20.bc6 bc6 21.Rb1–/+) 19.Rg1 (19.bc6 Qc6 20.Bb5 Qc7=+) 19...Rfg8 (19...Ng4 20.Bg4 fg4 21.bc6 bc6 22.Rb1=+) 20.Rg7= Rg7 21.a5 Nb8 22.b6+= ab6 23.cb6 Qc8 24.Na4 Ng4 25.Bg4 fg4 26.Nf1 g3 27.hg3 Bg4 28.Qd2 Bf3 29.Kg1 Bh4 30.Qh2 Qg4 31.Kf2 Be2?? 32.Qh4+– Qf3 33.Ke1?? (33.Kg1 Bf1 34.Qd8 Rg8 35.Qf6 Rg7 36.Qf8 Rg8 37.Qf6 Rg7 38.Qf8 Rg8 39.Qf6=) ½–½. Lang,M – Hirschinger,Thomas, Pfalz–ch Waldfischbach, 1995.

10.g3 h5 11.b5 h4 12.c5 Qc7 13.bc6 bc6 14.gh4 Rb8 15.Rb1 Rh4 16.f4 Ng4 17.Qe2 Qa5 +=.

10.g3 h5 11.Rc1 dc4 (11...h4= 12.cd5 Nd5 13.g4 g6 14.b5 N7b6 15.bc6 bc6 16.Nd5 cd5 17.gf5 Bf5=) 12.Nc4 Qc7 (12...Qe7 13.b5 h4 14.gh4 Qd8 15.Be2 Rh4 16.bc6 bc6 17.Qa4 Rc8=; 12...Bc4 13.Bc4 h4 14.b5 hg3 15.fg3 Nd5 16.Qe2 Nc3 17.Rc3 cb5=) 13.b5 h4 14.bc6 bc6 15.gh4 Rb8 16.Rc2 Nb6 17.Nb6 Rb6 +=.

10.g3 h5 11.c5 Qc7 12.b5 (12.Rb1 a6 13.Ne2 h4 14.Nf4 Bf7 15.gh4 Rh4 16.h3 g5 17.Ng2 Rh6+=) 12...h4 13.gh4 Rh4 14.bc6 bc6 15.f4 Be7 16.Qe2 Rb8 17.Rb1 Ng4 +=.

10.g3 h5 11.cd5 Bd5 (11...Nd5 A) 12.Rc1= N7f6 (12...N7b6 13.Nd5 Bd5 14.Be2 g6 15.b5 h4 16.g4 Rb8 17.bc6 bc6=; 12...Nc3 13.Rc3 Nb6 14.b5 cb5 15.Bb5 Kd8 16.Nb3 Bd5 17.Nc5 Rc8=; 12...Be7 13.Nc4 Qc7 14.Be2 h4 15.g4 Nc3 16.Rc3 f4 17.ef4 Qf4=; 12...h4 13.g4 g6 14.b5 Rc8 15.Nd5 Bd5 16.gf5 gf5 17.Qa4 Qb8=) 13.Nd5 Bd5 14.Nc4 Qe6 15.Be2 h4 16.gh4 Rh4 17.Ne5 Bd6+=; B) 12.Be2 h4 13.g4 Nc3 14.Bc3 0–0–0 15.gf5 Bf5 16.Rc1 Kb8 17.Qa4 Qg6=) 12.h4 (12.Nd5 Nd5 13.Rc1 Rd8 (13...Be7= 14.Be2 Qg6 15.b5 h4 16.g4 f4 17.Qc2 fe3=) 14.Be2 g6 15.Nc4 Qe7 16.h4 Bg7 17.0–0 0–0=) 12...g6 (12...Be6 13.Rc1= Nb6 14.Nb3 Qd7 15.Nc5 Bc5 16.dc5 Nbd5 17.b5 0–0–0=) 13.Nc4 (13.b5 Be7 (13...cb5 14.Nb5 Qb6= 15.Rc1 Kd8 16.Nc7 Rc8 17.Nd5 Rc1=) 14.bc6 bc6 15.Nc4 Qe6 16.Qa4 0–0 17.Qa6 Nb6+=; 13.Rc1 Bg7 14.Nd5 Nd5 15.b5 cb5 16.Bb5 a6 17.Nc4 Qe7+=) 13...Qe6 14.Nd5 Nd5 15.Na5 b6 (15...Rb8 16.Bc4 Bg7 17.Qc2 0–0=) 16.Nc4 (16.Nb3 Bg7= 17.Rc1 0–0=) 16...a5 (16...Bg7 17.Nd2+= (17.Rc1 0–0+= –0.38) 17...0–0+=) 17.ba5= b5 18.Nb6 (18.Nd2 Ra5 19.a4 ba4 20.Ra4 Ra4 21.Qa4 N7b6=) 18...Ra5 19.Nd5 Qd5 20.Qc2 Nb6 21.Be2 Bd6 22.0–0= Kd7 23.Bc3 Ra3 24.Ra3 Ba3 25.Ba5 Na4 26.f3 Re8 27.fe4 Qe4–/+ 28.Qe4 Re4 29.Kf2 Re8 30.d5 Nc5 31.Ra1 Ne4 32.Kf3 b4 0–1. Lebel,Patrick (2160) – Gregoire,S (2310), 20th Open, Cappelle la Grande FRA, 2004. (=1.Nf3 d5 2.b4 Qd6 3.a3 e5 4.e3 Be6 5.Bb2 Nd7 6.d4 e4 7.Nfd2 f5 8.c4 c6 9.Nc3 Ngf6)

6.Be2 c6

7.0–0 Be7 =.

7.0–0 Ngf6 8.d4 e4 9.Ne5 =.

7.Ng5 Bf5 8.0–0 (8.Nf3 Ngf6=) 8...Be7 (8...Qg6 9.f4 Bc2 10.Qc1–/+) 9.f4 (9.Nf3 Ngf6=) 9...Nh6 (9...Bg5 10.fg5 Qg6 11.c4–/+) 10.Bh5 (10.fe5 Ne5 11.Nf3 Nf3 12.Rf3 0–0=) 10...0–0=+ 11.fe5 Ne5 12.Nf3 Bf6 (12...Nf3 13.Bf3 (< 13.Rf3 g6–+) 13...a5 14.b5=+) 13.Ne5 (13.Ra2 Rae8=+) 13...Be5 14.Be5 Qe5 15.Nc3 d4 16.ed4 (16.Na4 de3 17.Re1 Bc2 18.Qc2 Qh5 19.de3 Rfe8–/+) 16...Qd4 17.Rf2 (17.Kh1 Rad8–/+) 17...Bg4–+ 18.Bg4 (18.Ne2 Qb6 (18...Bh5?! 19.Nd4 Bd1 20.Rd1=) 19.Bg4 Ng4–+) 18...Ng4 (18...Qg4?! 19.Qg4 Ng4 20.Re2=) 19.Qf3 Rad8 20.Raf1 Nf2 21.Rf2 Rde8 22.h3 Re1 23.Kh2 f6 24.Na4 Qe5 25.g3 Qd5 26.Kg2 Rd8 27.d3 Ra1 28.Qd5 cd5 29.Nc5 b6 30.Ne6 Rd7 31.g4 Ra3 32.g5 Rd6 33.Re2 Kf7 34.Nd4 Ra2 35.h4 a5 36.b5 Kg6 37.Nc6 fg5 38.Ne7 Kf7 39.Nc6 gh4 40.Ne5 Kg8 41.Kh3 Rb2 42.Nc6 Rb5 43.Ne7 Kf7 44.Nf5 Rf6 45.Nd4 Rb4 46.Nb3 Rb3 (47.cb3 Rf3 48.Kh4 Rd3–+; better is 46...a4 47.Nc1–+) 0–1. Eckhoff,Karlheinz (1690) – Benda,Herbert (2200), Raika op 6th, 1997.

7.0–0 f6

8.d3 Nb6 9.d4 e4 10.Nfd2 =.

8.d3 Be7 9.Nbd2 (9.c4 Nh6=) 9...Nh6 (9...a5 10.Bc3=) 10.c4 0–0 11.Ne1 (11.c5 Qc7=) 11...Rfd8 (11...dc4 12.dc4 c5 13.Nd3=) 12.c5 Qc7 13.f4 (13.d4 Nf5=) 13...Nf5 (13...b6 14.d4=) 14.Nc2 (14.Bg4!? g6 15.e4 de4 16.de4+/–) 14...ef4= 15.ef4 b6 16.d4 Rab8 (16...a5 17.Bd3 ab4 18.Re1 ba3 19.Re6 ab2 20.Ra8 Ra8 21.Bf5 Nc5 22.Qh5 (< 22.dc5 Bc5 23.Kh1 Qf4=+) 22...Ra1 23.Ne1+=) 17.cb6 (17.Bd3 Nf8 18.Rb1 Re8+=) 17...ab6= 18.Bd3 Nf8 (18...Qd6 19.Qe2 Re8 20.Rfe1=) 19.g4 (19.Qh5 g6 20.Qf3 Re8=) 19...Nd6 20.f5 (20.Ne3 Re8=) 20...Bf7 21.Ne3 c5 22.Rc1 c4 23.Qf3 Qb7 24.Bb1 b5 25.Ng2 Re8 26.Nf4 Bd8 27.Rfe1 Bb6 28.h4 Qa7 29.Qc3 Rbd8 30.g5 Ne4 31.Ne4=+ de4 32.Rcd1 Qc7 33.Qg3 fg5 34.hg5 g6 35.Re4 Re4 36.Be4 gf5 37.Bf5 Bg6 38.Bg6 Ng6 39.Ne2 Qe7 40.Re1 Qe4 41.Kh2= Re8 42.Bc3 Qc2 43.Qg2= Nh4 44.Qd5+= Kh8 45.Kg3 Qd3 46.Kg4?? Re4 47.Nf4 Qf3 (48.Kh4 Rf4#) 0–1. Zahn,Richard – Vogel,Christian (2140), NR–ch Germany, 1997.

8.d4 e4 9.Nfd2 Qc7 10.c4 Bd6 11.g3 f5 12.cd5 cd5 13.Nc3 a6 14.Na4 Ne7 (14...b6 15.Rc1 Qb7 16.Nc5 bc5 17.dc5 Nc5 18.Bh5 Kf8 19.bc5 Bc5 20.Bg7 Kg7 21.Rc5=) 15.Nc5+= Bf7 (15...Nc5? 16.bc5 (16.dc5?! Be5 17.Be5 Qe5+=) 16...Rc8 17.cd6 Qd6 18.a4+–; worse is 15...Bc5 16.dc5 0–0 17.Nb3+=) 16.Rc1 Nc6 17.Nd7 (17.Qa4 Rc8+=) 17...Qd7= 18.Nb3 0–0 (18...b6 19.b5 Nb8 20.a4=) 19.Nc5 Qc7 20.Rc3 Rfc8 21.Qc2 Bc5 22.Rc5 (22.bc5 Rab8=) 22...b6 (22...Qd6 23.Rc1=) 23.Rc3+= Be8 24.Rc1 Qd8 25.a4 White prepares b5 25...Ne7 26.b5 ab5 27.ab5 h6 (27...Rc3 28.Bc3 Qd6 29.Qb3=) 28.Ba3+= Rc3 29.Qc3 Rc8 ½–½. Skerlik,Stanislav (2315) – Yazgeldiev,Kerim (2325), WS/MN/080, 2012.

8.d4 e4 9.Nfd2 Qc7 10.c4 Bd6 11.g3 Nh6 12.Nc3 f5 13.Rc1 Qd8 (13...dc4 14.Nc4 (14.Bc4?! Bc4 15.Nc4 0–0=) 14...0–0 15.d5 (15.Nd6?! Qd6 16.b5 Rab8+=) 15...Bd5 16.Nd5+–) 14.cd5+= cd5 15.Qb3 Nf6 16.Nb5 (16.f3 Qd7+=) 16...0–0 17.Nd6 Qd6 18.Rc2 g5 (18...Rac8 19.Rfc1=) 19.Rfc1 (19.f4 g4+=) 19...Rf7 (19...f4 20.Rc7+=) 20.b5 (20.f4 gf4 21.ef4 Re8+/–) 20...f4+= 21.a4 Nhg4 22.Ba3 Qd8 23.Bg4 Bg4= 24.Qb4 Ne8 25.Nb3 Qf6 26.Qe1 h5 27.ef4 gf4 28.h4 Rg7 29.Kh2 Bf5 30.Re2 Qg6 31.Qg1? Qg4–+ 32.Qf1 fg3 33.fg3 Qg3 34.Kh1 Bg4 (35.Rf2 Qb3–+; 34...Qb3?! 35.Qf5 Qa3 36.Qd5 Rf7 37.Rg1 Ng7 38.Qe4–+; 34...Qh4?! 35.Rh2 Qg4 36.Nc5–+) 0–1. Kolb,Wolfgang – Vuckovic,Aleksandar (2265), Augsburg op 2nd, 1995.

8.d4 e4 9.Nfd2 Ne7 (9...Qc7 10.c4=) 10.c4+= Ng6 11.cd5 (11.Nc3 Be7+=) 11...cd5 (11...Qd5? 12.Nc3 Qg5 13.Nce4+–) 12.Nc3 a6 (12...Be7 13.Nb3+=) 13.f3 f5 14.fe4 (14.Rc1 Be7+=) 14...fe4 15.Rc1 Be7 16.Nde4 (better is 16.Nb3!?+=) 16...de4+= 17.Ne4 Qd5 (17...Qb6 18.Nc5+=) 18.Bf3= Qa2 19.d5 (19.Rf2!? 0–0 20.Nc3=) 19...Qb2+= (19...Qd5 20.Nf6 Nf6 21.Bd5 Nd5 22.Bg7+–; 19...Bd5 20.Bg7 Be6 21.Ra1+/–) 20.de6 Nf6?? (20...Nde5 21.Rc3 Nf3 22.Rf3 Rd8+/–) 21.Nd6 (better is 21.Nf6 gf6 22.Bb7+/–) 21...Bd6= 22.Qd6 Rd8 (22...Qa3 23.Bb7 Qe3 24.Kh1 Qc1 25.Rc1+–) 23.Bc6 (23.Qc7!? Ne7 24.Rfd1+=) 23...bc6= 24.Qc6 Ke7 25.Qc7 Ke6 26.Rc6 Kd5 27.Qb7?? (27.Ra6 Ne5 28.Ra5 Ke6 29.Ra6 Kd5 30.Ra5 Ke6 31.Ra6 Kd5=) 27...Ke5 (27...Rd7 28.Rc7 Ke6 29.Rf6 Qf6 (29...gf6?! 30.Rd7 Qc1 31.Kf2 Qc2 32.Kg3–/+) 30.Rd7 Qa1 31.Kf2 Rf8 32.Ke2 Qf1 33.Kd2 Rf2 34.Kc3 Qc1 35.Kd4 Rd2 36.Ke4 Qb1 37.Rd3 Qd3 38.Kf3 Ne5 39.Kf4 Qf5 40.Kg3 Qg4) 28.Qg7+/– Ke4 (28...Qa3?? 29.Qf6 Ke4 30.Qf3 Ke5 31.Qf5) 29.Rcf6 (29.Qf6?! Qf6 (29...Qa3?? 30.Qf3 Ke5 31.Qf5) 30.Rcf6 a5=) 29...Qb3 (29...Qa3 30.Qb7 Kd3 31.Rd1 Kc3 32.Qc7 Kb3 33.Qf7 Kb2 34.Rf2 Rd2 35.Rfd2 Kc3 36.Rd3 Kb4 37.Rb1 Qb2 38.Rb2 Kc5 39.Qd5) 30.Qb7 (30.Ra6?! Qe3 31.Kh1 Rhf8 32.Re6 Kd5+/–) 30...Rd5 31.Re6 Kd3 32.Qa6 (32.e4 Rd4 33.Qa6 Qc4 34.Rf3 Ke2 35.Qc4 Rc4+–) 32...Kd2 33.Qc6 (33.Ref6!? Rf8 34.Rf8 Nf8+–) 33...Ke2 34.Rf2 Ke1 (34...Kd1 35.Rg6 hg6 36.Qf6+–) 35.e4 (35.e4 Rd4 36.Ref6+–) 1–0. Pleschke,Helmut – Wall,Bill, corr Carel CF–01, 2005.

8.d4 Be7 =.

6.Be2 Be7

7.0–0 0–0–0 8.d4 e4 9.Nfd2 =+.

7.0–0 a5 8.b5 (8.d4 e4 (8...ab4?! 9.de5 Qc6 10.Nd4+=) 9.Ne5 ab4 10.ab4 Ra1 11.Ba1 Qb4–/+) 8...Ngf6 9.a4 (9.d4 e4 10.Ng5 0–0=) 9...c6 (9...Ne4 10.d3 Ng5 11.Ng5 Bg5 12.d4=) 10.Ba3 (10.d4 Qb4 11.Bc3 Qd6 12.de5 Qc7 13.ef6 Bf6 14.Bf6 Nf6+–) 10...c5 11.d4 Ne4 12.c4 (12.dc5 Ndc5 13.Nd4 0–0 14.Ne6 Qe6=+) 12...dc4=+ 13.Qc2 Bf5 (13...Qd5 14.Bc4 Qc4 15.Qe4 ed4 16.ed4=+) 14.Qc4= ed4 (14...Be6 15.Qc2 f5 16.Rd1 ed4 17.ed4+/–) 15.ed4 (15.Nd4 Ne5 16.Qc1 Ng4 17.Bg4 Bg4+=) 15...Qg6 (15...Be6 16.Qd3 Bd5 17.Rd1+=) 16.Re1 0–0 17.Nc3 Rfe8 (17...Bh3 18.Bf1 Be6 19.d5+–) 18.Nd5 (18.Ne4 Be4 19.dc5 Ne5+=) 18...Bd6 (18...Rac8 19.Ne7 Re7 20.Rad1=) 19.Rad1 (19.Nh4 Nd2 20.Qc3 Ne4+=) 19...Be6 (19...Rac8 20.Nh4 Qg5 21.Nf5 Qf5 22.f3=) 20.dc5 (20.Bd3 Nb6 21.Be4 Nc4 22.Bg6 Bd5 23.Bh5 Na3 24.dc5 Bf3 25.Bf3 Re1 26.Re1 Bc5 27.Bb7–+) 20...Ndc5= 21.Bb2 Rac8=+ 22.Qa2 Qh5 23.Ba1 Na4! 24.Ne5 Nec3 25.Bh5=+ Na2 26.Nb6 Nb6 27.Rd6 Nd5 28.Re6 fe6 29.Be8 Re8 30.Nc4 b6 31.Bd4 Nac3 32.Bb6 Nb6–/+ 33.Nb6 a4 34.Ra1 Rb8 35.Na4 Ra8 36.Kf1 Ra4 37.Ra4 Na4 38.Ke1 Kf7 39.Kd2 Ke7 40.Kc2 Kd6 41.Kb3 Nb6 42.Kb4 Nd5 43.Kc4 g5 44.Kd4 h6 45.g3 g4 46.Kd3 Nf6 47.Ke3 e5 48.f3 gf3 49.Kf3 Kc5 50.g4 Kb5 51.h4 Ng4 52.Kg4 Kc4 (53.Kg3 Kd3–+) 0–1. Solare,Juan (2020) – Marcotulli,Giancarlo (2255), CL1–2002.11.02, 2002.

7.0–0 c6 8.d3 Ngf6 9.c4 0–0 10.Nbd2 h6 (10...a5 11.c5 Qc7 12.Qc2=) 11.Qc2 Rfe8 (11...a5 12.c5 Qc7 13.Qc3+=) 12.Qc3 Bg4 (12...Qb8 13.Rfd1=) 13.h3 Bf3 14.Nf3 Bd8 15.Rfd1 Bc7 16.Qc2 (16.Qb3 b5=) 16...Rac8 (16...a5 17.c5 Qe6 18.Rdc1=) 17.Rac1 Qe6 18.Nd2 d4 (18...b5 19.a4=) 19.ed4 (19.Bf3 a5+=) 19...ed4= 20.Bf1 (20.Bf3 Rcd8=) 20...Qd6 21.g3 c5 22.bc5 Nc5 23.Nf3 (23.Re1 Re1 24.Re1 Ba5=) 23...Ne6 24.c5 Qd5 (24...Qd7 25.c6 bc6 26.Qc6 Qc6 27.Rc6=) 25.Bg2 Bb6 Pawn c5, live or die! 26.Qd2 Nc5 27.Nd4 (27.Bd4?? Nb3 28.Rc8 Nd2 29.Re8 Ne8 30.Rd2 Bd4 31.Nd4 Qd4 32.Bb7 Qa1 33.Kg2 Qa3–+) 27...Qd7 28.Qf4 Na4 29.Ba1 Rc1 30.Rc1 Nc5 31.Qf3 Qa4 (31...Rd8 32.Rd1=) 32.Bb2 (32.Nf5 Qa3 33.Rd1 Ncd7+=) 32...Qa5= 33.Bf1 Ncd7 34.Nb3 Ne5 35.Qf4 (35.Qf5 Qd5 36.Be5 Qe5 37.Qe5 Re5+=) 35...Qd5= Attacks the isolani on d3 36.Be5 Re5 37.Bg2 Qe6 38.d4 Re1 39.Re1 Qe1 40.Kh2 Qb1 (40...Qe6 41.Nc5 Qe7 42.Nb7 Qa3 43.Nd6+=) 41.Qe3 Qb2 42.Nc5 g6 (42...Kf8 A) worse is 43.Nb7 Bd4 (43...Qd4?! 44.Qd4 Bd4 45.f4=) 44.Qf3 Qf2 45.Qf2 Bf2–/+; B) 43.a4+=) 43.Bf3 (43.a4 Kg7+=) 43...Kg7 44.Kg2 (worse is 44.Nb7 Bd4 (44...Qd4?! 45.Qd4 Bd4 46.Kg2=) 45.Qe2 Qe2 46.Be2 Bf2–/+) 44...Bc5 45.dc5 Nd7 46.h4 Ne5 (46...a6 47.h5 gh5 48.Qe7+=) 47.Bd5 h5 48.a4 a5 49.Qf4 Qc3 50.Qe4 ½–½. Hoch,Hubertus (2210) – Rudykh,Sergey Leonidovich, 60yearsBdF–WS18, 2006.

7.0–0 c6 8.Ne5 Bf6 (better is 8...Ne5 9.f4 Nc4 10.Bc4 dc4+=) 9.Nd3+= Bb2 10.Nb2 Ngf6 11.Nc3 h5 12.f4 Bf5 13.d3 (13.Bd3 Bd3 14.Nd3 Ne4+/–) 13...Qe6 14.Qd2 h4 15.h3 Bh3? (better is 15...0–0–0!?+=) 16.gh3+– Qh3 17.Bf3 Ng4 18.Bg4 Qg4 19.Qg2 Qf5 20.Kh2 0–0–0 21.Rg1 (21.Qg7 Nf6 22.e4 de4 23.Ne4 Ne4 24.de4 Rd2 25.Kg1 Qh3=) 21...Qf6? (better is 21...g6 22.Qh3 Qf6+–) 22.Qg7 Qg7 (22...Qe6 23.e4+–) 23.Rg7 Rdf8 24.Rag1 Nf6 25.Nbd1 Nh5 26.R7g2 d4 (26...Ng3 27.e4 Rd8 28.Kh3+–) 27.Ne2 de3 28.Ne3 Re8 29.Nc4 Kc7 30.f5 h3 31.Rf2 (31.Kh3 Nf4 32.Kg3 Ng2 33.Kg2 Re2 34.Kf3 Reh2–/+) 31...Nf6 32.Nf4 (32.Rg7 Re7 33.Nf4 Ne8+–) 32...b5 33.Nd2 Re3 34.Rg7 Rh7 (34...Kb6 35.a4 Ka6 36.ab5 cb5 37.Rf1+–) 35.Rg5 (better is 35.Rh7 Nh7 36.Ne4 Nf8+–) 35...Rh4 36.Nf1 Re7 (36...Re1 37.Rf3+–) 37.Nh3 Ng4 38.Kg3 Nf2 39.Kh4 (39.Nf2?! Rh8+–) 39...Nh3 40.Kh3 Kd6 (40...Re1 41.Ng3 Kd7 42.Ne4+–) 41.Ng3 Ke5 (41...Re1 42.Ne4 Kd7 43.f6+–) 42.Ne4 Kd4 (42...Kf4 43.f6 Re8 44.Rg4 Ke5 45.Kg3+–) 43.f6 Rd7 44.Kg3 Ke3 (44...a5 45.ba5 Ke3 46.Rg7+–) 45.Re5 Kd4 (45...Rd8 46.Nd6 Kd4 47.Nf7+–) 46.Re7 (46.Re7 Rd8 47.Rf7+–) 1–0. lukekyte101 (1670) – a50tango (1655), gameknot.com, 2014.

7.0–0 f5 8.Nc3 c6 9.Na4 Bf6 10.Nc5 Nc5 11.bc5 Qc7 (< 11...Qc5 12.Be5 Be5 13.Ne5+=) 12.d4 (12.c4 dc4 13.Qa4 Bd5=) 12...e4 13.Ne5 (13.Nd2 Ne7=) 13...Ne7 14.Bh5 (14.c4 Be5 15.de5 0–0=) 14...g6=+ 15.Be2 0–0 (15...b6 16.cb6 ab6 17.Qd2=) 16.f4 (16.c4 Rfd8=) 16...b6 17.Qe1 bc5 18.dc5 Rab8 (18...a6 19.Rb1=) 19.Bd4 Kg7 20.Qc3 Ng8 (20...Nc8 21.Rab1 Ne7 22.Rb3+=) 21.Rab1 Rb1 (21...Rfd8 22.Rb3+=) 22.Rb1+= Nh6 (22...Ne7!?+=) 23.Qb2+/– Bc8 (23...Kg8 24.Nc6! Qc6 25.Bf6 Qc5 26.Bd4+–) 24.c4 (24.Qb8 Qb8 25.Rb8 Be5 26.Be5 Kg8+–) 24...Nf7 (24...Ng4 25.cd5 cd5 26.Qb8+–) 25.Ng4! (25...fg4 26.Bf6 Kg8 27.Qd2+/–) 1–0. pcmvr (2785) – rumiek (2000), net–chess.com, 2006.

7.0–0 f5 8.d4 (8.Ne5 Ne5 9.f4 Nc4 10.Bc4 dc4 11.Bg7 Bf6 12.Bh8 Bh8–/+) 8...e4 9.Nfd2 (9.Ne5 Ngf6=) 9...Ngf6 10.c4 (10.b5 a6 11.ba6 ba6=) 10...c6 (10...dc4 11.Nc3 (11.Bc4? Ng4 12.g3 Bc4 13.Nc4 Qh6–+) 11...a5 A) worse is 12.Nc4 Bc4 13.Bc4 Ng4–/+ (worse is 13...ab4 14.Nb5 Qb6 15.ab4+=); B) 12.ba5 Ra5 13.Nc4 Bc4 14.Bc4–+) 11.cd5 (11.c5 Qc7=) 11...cd5 12.Nb3 (12.f3 ef3 13.Nf3 Ne4=) 12...b6 (12...Ng4 13.g3+=) 13.N1d2 (13.Nc3 Rc8 14.Nd2 Qb8=) 13...0–0 (13...Ng4 14.Bg4 fg4 15.b5+=) 14.f3 ef3 15.gf3 (15.Nf3 Ne4=) 15...Bf7 (15...a5 16.ba5 ba5 17.a4+=) 16.Bd3 (16.Re1 Qe6 17.Ba6 Bd6=) 16...Qe6+= 17.Qe1 (17.Re1 Bg6+=) 17...Bd6 (better is 17...a5+=) 18.e4? (better is 18.Qf2+=) 18...de4 (18...fe4 19.fe4 Qg4 20.Kh1 de4 21.Bc4–+) 19.fe4 (better is 19.Bc4 Qe7 20.fe4 fe4 21.Qe2–+) 19...fe4 20.Be4 (20.Bc4 Qh3 21.Bf7 Rf7–+) 20...Qg4 (better is 20...Qh3 21.Qe2 Rae8–+ (21...Bb3?! 22.Ba8 Ra8 23.Nb3 Qb3 24.Rf3–+)) 21.Kh1?? (better is 21.Bg2 Rae8 22.h3–+) 21...Rae8 (21...Rae8 22.Rg1 Qf4 23.Rg7 Kg7 24.Qg1 Kh8–+; worse is 21...Ne4 22.Rf7 Qh5 23.Nf3 Rf7 24.Qe4 Rf3 25.Qe6 Rf7 26.Qd6–+) 0–1. Ashen_Shugar – cccmember, playchess.de, 2003.

7.0–0 Nh6 8.d4 e4 9.Ne5 c6 (9...a5 10.b5=) 10.c4 0–0 11.Nd7 Bd7 12.Nc3 Qg6 13.cd5 (13.Kh1 dc4 14.Qc2 a5 15.Bc4 b5=) 13...Bh3=+ 14.g3 Bf1 15.Bf1 cd5 16.Nd5 Bd6 17.Bg2 f5 18.f3 ef3 (18...Nf7 19.Rc1=+) 19.Bf3 Ng4 20.Nf4 Bf4 21.ef4 Qe6 22.Qd3 Rae8 23.h3 Nf6 24.Kg2 Kh8 25.Rc1 Nd5 26.Kf2 Re7=+ 27.Qe2 Ne3 28.Rc3=+ Qa2 29.Re3 Re3 30.Qe3 Qb2 31.Be2 Rd8 32.d5 b6 33.Qd3 Qa2 0–1. LieutenantColumbo – Theoryhack, ChessWorld.net, 2010.

7.0–0 Nh6 8.h3 0–0=+ 9.d4 e4 10.Ne5 f6 11.Nd7 Qd7 12.c4 c6 13.cd5 cd5 (< 13...Qd5 14.Nc3 Qg5 15.Ne4+/–; < 13...Bd5 14.Nc3=) 14.Nc3 Nf7 15.Bb5 Qd6 16.Be2 Bd8 17.Nb5 Qd7 18.Rc1 a6 19.Nc3 Bc7 20.Bg4 Qd6=+ 21.f4 ef3 22.Qf3?? Qh2 23.Kf2 f5! 24.Bh5 Ng5 25.Qe2 Bg3# 0–1. marnzell – Theoryhack, ChessWorld.net, 2009.

7.Nc3 a6 =.

7.Nc3 Bf6 =.

7.d3 f5 8.Nbd2 (8.d4 e4 9.Ne5 0–0–0=+) 8...Ngf6 9.c4 c6 10.0–0 0–0 11.Ng5 Bf7 (11...a5 12.c5 (12.Ne6?! Qe6 13.Bc3 b5=) 12...Nc5 13.bc5+–) 12.Nf7 Rf7 13.f4 e4 14.de4 (14.c5 Qe6 15.Nb3 ed3 16.Qd3 Ne4=) 14...fe4= 15.Qb3 (15.cd5 Qd5 16.Bc4 Qf5 17.Bf7 Kf7+–) 15...Rd8 (15...Raf8 16.cd5 cd5 17.Bd4+=) 16.Rad1 (16.cd5 Qd5 17.Bc4 Qh5+–) 16...Qc7 (16...Qe6 17.f5 Qd6 18.cd5 cd5 19.Bd4+=) 17.cd5+= cd5 18.Nb1 (18.Rc1 Qb6+=) 18...Qb6 19.Bd4 Bc5 20.Qb2 Bd4 21.Qd4 Qd4 (21...Rc8 22.Rc1 Rc1 23.Rc1 Qd4 24.ed4=) 22.Rd4= Nb8 23.Rc1 Nc6=+ 24.Rdd1 White fights for the Initiative 24...Rfd7 25.Bb5 Rd6 26.Bc6 bc6 27.Nd2 d4 28.Nc4 Rd5 29.Rd4 Ng4 30.h3 Ne3 31.Re4 Rd1 32.Rd1 Rd1 33.Kf2 Nc4 34.Rc4 Rd3 35.a4 Rd6 36.Ke3 Kf7 37.Rd4 Rg6 38.g4 Rh6 39.Rd7 Ke6 40.Rg7 Rh3 The passed pawn on f4 quickly leads to threats 41.Kd4 a5 42.ba5 Ra3 43.Kc5 Ra4 44.Kb6 Rf4 45.Kc6 Kf6 46.Rh7 Rg4 47.a6 Ke6 48.a7 Ra4 49.Kb7 Rb4 50.Kc8 Rc4 51.Kb8 (51...Ra4 52.a8Q Ra8 53.Ka8+–) 1–0. Buczinski,Henryk – Lubosik,Zbigniew, Siemianowice Slaskie Poland, 1990.

7.d3 Ngf6 8.Nbd2 0–0 (8...a5 9.c4 dc4 10.dc4 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.Bc3=) 9.c4 c6 10.Qc2 (10.0–0 b6=) 10...Ng4 (10...b6 11.Qc3=) 11.0–0 f5 12.e4 (12.h3 Nh6=) 12...b6 (12...Bf6 13.Rfe1=) 13.h3 Nh6 (13...fe4 14.de4 Ngf6 15.Ng5=) 14.d4+= White intends c5 14...de4 (14...fe4 15.de5 (15.Ne5?! Bf5=) 15...Qb8 16.Nd4 Qe5 17.Nc6+/–) 15.de5 Qc7 16.Nd4 Qe5 17.c5 Bd5 (17...Bf6 18.Nc4 Bc4 19.Bc4 Kh8 20.Rab1+=) 18.Nc6+/– Qe6 19.Ne7 Qe7 20.c6 Rac8 21.b5 Nc5 22.Rad1 (22.Nc4 Rfd8+=) 22...Rfd8 23.f4 (23.Nc4 f4 24.Ne5 Kh8+=) 23...Nd3 24.Bd3 ed3 25.Qc3 a6 26.a4 (worse is 26.Qd3 Bg2 27.Qb3 Bd5–+) 26...ab5 (26...ab5 27.ab5 Rc7+/–). Riepe,Bernhard (2080) – Kleinsorgen,Horst M (2110), desc–online.de, 2003.

7.d3 Ngf6 8.d4 e4 9.Ng5 =+.

7.d3 Nh6 8.Nbd2 0–0 (8...a5 9.c4 dc4 10.dc4=) 9.0–0 (9.c4 Bf6=) 9...f6 (9...a5 10.b5=+) 10.c4= c6 11.Re1 (11.c5 Qc7=) 11...Kh8 (11...b6 12.Bc3=) 12.Qc2 Rad8 13.Nb3 (13.c5 Qc7=) 13...Qb8 (13...b6 14.Rad1=) 14.Rac1 (14.Rad1 Nf5=) 14...Rc8 (14...Nf7 15.cd5 cd5 16.Qc7=) 15.Qd2 (15.Red1 b5=) 15...dc4 16.dc4 Nb6 (16...c5 17.e4=) 17.Qc2 Na4 (17...c5 18.b5=) 18.Ba1+= c5 19.b5 Rfd8 (19...Bd6 20.Rcd1 Rcd8 21.Nbd2+=) 20.Red1 (20.Bd3 Nb6+=) 20...Nb6 21.Nbd2 Rd7 22.a4 Rcd8= 23.a5 Nc8 24.Nb3 Rd1 25.Rd1 Rd1 26.Qd1 b6 27.a6 Nf5 28.Qc2 Qd6 29.Nbd2 Qd8 30.Bb2 Kg8 31.g3 Ncd6 32.Ne4 Ne4= 33.Qe4 Nd6 34.Qc2 Bf5 35.Qd1 Be6 36.Qc2 Qe8 37.Nd2 Qf7 38.Kf1 Bf8 39.Ke1 g6 40.Bf1 Be7 41.Be2 Bf8 42.Bf1 Bh6 43.Ne4 Bf8 44.Nd6 Bd6 ½–½. Emberger,Rene – Wieser,Andreas (2125), Graz op, 2002.

7.d4 e4 8.Nfd2 c6 9.c4 f5 10.g3 (10.cd5 cd5 (worse is 10...Qd5 11.Nc3 Qd6 12.d5+–) 11.Nb3 Ngf6=) 10...Ngf6+= 11.Nc3 0–0 12.cd5 (12.0–0 dc4 13.Nc4 Qc7=) 12...cd5 (12...Nd5 13.Nc4 Nc3 14.Bc3+=) 13.Nb5 (13.0–0 Rac8+=) 13...Qb8 (13...Qb6 14.0–0+=) 14.Rc1 Ne8 (14...Rc8 15.0–0+=) 15.Nb3 (15.Qb3 a6 16.Nc3 Qd6+=) 15...a6 16.Nc3 b6 17.b5 (17.0–0 Nd6=) 17...a5 (17...Ndf6 18.ba6 Bc8 19.Nd2+=) 18.f4 (18.f3 Nd6=) 18...ef3 (18...Nd6 19.0–0+=) 19.Bf3= Ndf6 20.0–0 Nd6 21.Nd2 (21.a4 Nc4 22.Qe2 Ne4 23.Nd5 Bd5 24.Rc4 Qd6+=) 21...Nde4+= 22.Nde4 (22.Ne2 Bd7 23.a4 Bb4=) 22...fe4 23.Bg2 Qd6 24.Qd2 Bd7 25.Rf4 Nh5 (25...Rf7 26.Qe2+=) 26.Rf8 (26.Rff1 Rac8+=) 26...Rf8 27.Rf1 (27.a4 Nf6+=) 27...Nf6 28.Rf4 Rd8 (28...Qe6 29.Rf1+=) 29.Rf1 Ng4 30.Qe2? (better is 30.h3 Nf6 31.Qf2+=) 30...Qh6–+ 31.Be4 (better is 31.h3 Qe3 32.Qe3 Ne3 33.Re1 Ng2 34.Kg2–+) 31...de4 32.Nd5 (32.Rf4 Bd6 33.Rg4 Bg4 34.Qg4 Qe3 35.Kg2 Qd4–+) 32...Bg5 33.Nf4 Nh2! 34.Qh2 Qh2 35.Kh2 Rc8 (35...Rc8 36.Rf2 Bb5–/+) 0–1. Fischbach,Rainer (1870) – Wichmann,Cliff (2385), Leipzig VfB op, 2009.

7.d4 e4 8.Nfd2 f5 9.c4 c6 10.Nc3 Rc8 (10...Ngf6 11.c5 Qb8 12.Nb3=) 11.cd5+/= cd5 12.Rc1 Qb8 13.0–0 (13.Nb3 Ngf6+=) 13... Ngf6=14.f4 (14.Nb3 0–0=) 14...ef3 15.Bf3 (15.Nf3 0–0=) 15...0–0=/+ 16.Qb3 Bd6 17.h3 Nb6 18.e4 (18.Be2 a6=+) 18...Bf4–/+ 19.ed5 (19.ef5 Bd2 20.fe6 Bc1 21.Bc1 Qd6–/+) 19...Be3 20.Kh1 Bf7 21.Rcd1 Rfd8 22.Ne2 f4 23.Ne4=/+ Ne4 24.Be4 Bd5 25.Bd5 Nd5 26.Nc3 Qd6 27.Ne4 Qc6 28.Nc3 Qc4 29.Qc4 Rc4 30.Nd5 Rd5 31.Rd3?? Rc2–+ 32.Ba1 g5 33.Rc3–/+ Rc3 34.Bc3 Kf7 35.g3 Ke6 36.Kg2 Bd4 37.Bd4 Rd4 38.gf4 gf4 39.Rc1 Rd3 40.Rc7 Ra3 41.Rb7 h5 42.Rh7= Rg3 43.Kh2 Rb3 44.Rh6 Ke7 45.Rh5 Rb2 46.Kg1 Rb4 47.Rh7 Kf6 48.Ra7 Rb2 49.Ra5 ½–½. Buczinski,Henryk (2200) – Waniek,Andrzej (2200), Puchar 80–lecia OZSz. Poland, 2003.

7.d4 e4 8.Ne5 0–0–0 =+.

7.d4 e4=+ 8.Ne5 Nh6 (8...Ngf6 9.c4 dc4 10.Nc4= (10.Bc4? Ne5 11.de5 Qd1 12.Kd1 Ng4 13.Be6 Nf2 14.Ke2 Nh1–/+)) 9.c4 c6 10.Nd2 (10.0–0 0–0=) 10...0–0 11.b5 (11.0–0 Bf5=) 11...f6 (11...cb5 12.cb5 Rac8 13.0–0=) 12.Nd7 (12.c5 Qc7 13.Nd7 Qd7=) 12...Qd7 13.a4 (13.bc6 Qc6 14.Qb3 Rac8=) 13...f5 (13...dc4!? 14.Bc4 Bc4 15.Nc4 cb5–/+) 14.bc6= bc6 (14...Qc6 15.Qb3=) 15.cd5 (15.Ba3 f4=) 15...cd5 16.g3 (16.Bb5 Qd8=) 16...Rab8 (16...Nf7 17.0–0=+) 17.Bb5 (17.Ba3 Rfc8=+) 17...Qb7 (17...Qc7 18.Ba3=+) 18.Ba3 Nf7 19.Be7 Qe7 20.0–0 Bd7 (20...Nd6 21.Qe2=+) 21.Bd7 Qd7 22.Nb3 (22.f3 ef3 23.Qf3 Qe6=+) 22...Ng5 23.h4 (better is 23.Nc5!? Qf7 24.Kg2=+) 23...Nf3–+ 24.Kg2 Qe7 (24...f4!? 25.Rh1 fe3 26.fe3 Rb4–+) 25.Nd2=+ Nd2 26.Qd2 ½–½. Lehr,Thomas – Schmidt,Frank, Schleswig Holstein–ch, 1993.

7.0–0 Ngf6

8.Nc3 a6 =.

8.d3 0–0 9.Nbd2 c6 10.c4 Rac8 11.c5 Qc7 12.Nb3 h6 13.h3 Nh7 14.Qc2 Ng5 15.Nbd2 Nf3 16.Nf3 Bf6 17.Nd2 Rfd8 18.e4 (18.d4 ed4 19.Bd4 Bd4 20.ed4 Qf4=) 18...Nf8 (18...b6 19.Nb3+=) 19.ed5 cd5 20.Bf3 (20.f4!?=) 20...Ng6+= 21.Nb3 Qd7 22.Kh2 Nf4 23.g4 (23.Rfe1 Qc7 24.Kg1 Bf5+=) 23...b6 (23...Qc7 24.d4–+) 24.Qd2 Qa4 25.Qd1 (better is 25.Bd1!? Qb5 26.Be2–+) 25...d4 26.Nd2 (26.Nd4 Qd1 27.Rfd1 ed4–+ (27...Rd4?! 28.Bd4 ed4 29.c6–+)) 26...Qd1 27.Rad1 Nd3 28.Ba1 bc5 29.Ne4 (29.bc5 Nc5 (29...Rc5?! 30.Ne4 Bc4 31.Nc5 Nc5 32.Rfe1–+) 30.Ne4 Be7–+) 29...Be7 (29...c4 30.Nf6 gf6 31.Bb7–+) 30.bc5?! (30.Rd3 Bc4 31.Rfd1 Bd3 32.Rd3 cb4 33.ab4 Bb4 34.Kg3–+) 30...Nc5 31.Nc5 Bc5 32.Bb2 Bc4 33.Rfe1 Bd6 34.Kg2 Rb8 35.Bc1 g6 36.Bh6 Kh7 37.Bg5 Rdc8 38.Ra1 Kg7 39.Be4 f6 40.Bh4 Rb3 41.a4 d3 42.Red1 Bb4 43.f3 Rb2 44.Kh1 d2 45.Bf2 Be2 46.Rdb1 Rb1 47.Rb1 Rc1 0–1. Hal1958 – Herb_CN, playchess.de, 2005.

8.d3 0–0 9.Nbd2 (9.c4 c6=) 9...c6 (9...a5 10.b5=+) 10.c4= Rfd8 (10...b5 11.c5 Qc7 12.Ng5=) 11.Qc2 (11.c5 Qc7=) 11...a5 (11...Bf5 12.e4 Bg4 13.c5=) 12.c5 Qc7 13.Qc3 (13.Ng5 Bg4 14.Bg4 Ng4=) 13...b6 (13...ab4 14.ab4 d4 15.ed4=+) 14.Ne5+= d4 (14...Ne5 15.Qe5 Qe5 16.Be5 ab4 17.cb6 Ra3 18.b7+/–) 15.ed4 (15.Qd4 Nc5 16.Qf4 Nd5=) 15...Nd5+= 16.Qc1 Nf4 (16...ab4 17.cb6 N7b6 18.Nc6 ba3 19.Ne7 (< 19.Nd8 ab2 20.Qb2 Rd8–/+; 19.Ba3? Ba3 20.Ra3 Rdc8–+) 19...Qe7 20.Ba3+/–) 17.Qd1 (17.Bf3 Ne5 18.de5 bc5 19.ba5 Nd3=+) 17...Ne5= 18.de5 (18.cb6 Qb6 19.de5 ab4 (< 19...Nd3 20.Bd3 Rd3 21.Qc2=; < 19...Ne2 20.Qe2 ab4 21.Rfb1+=) 20.ab4 Qb4 (< 20...Bb4 21.Ra8 Ne2 22.Qe2 Ra8 23.Nc4+=; < 20...Ne2 21.Qe2 Qb4 22.Ra8 Ra8 23.Ne4+=) 21.Ra8 Ra8=+) 18...bc5 19.bc5 (19.ba5 Qa5 20.Ne4 Qa6=) 19...Rab8 (better is 19...Nd3 20.Bd3 Rd3=) 20.Bc1?? (better is 20.Bc3 Nd3 21.Qa4=) 20...Qe5–+ (20...Bc5?! 21.Nf3 Ne2 22.Qe2=; 20...Nd3?! 21.Qc2 Qe5 22.Bd3 Qa1 23.Bh7 Kf8 24.Be4–/+; 20...Ne2?! 21.Qe2 Bf5 22.Qe3 Bd3 23.Re1=+) 21.Ne4 Ne2 (21...Qa1?! 22.Bf4 Qd1 23.Rd1–/+) 22.Qe2 Qa1 23.Bg5 Rb1 (better is 23...Qa3!? 24.Be7 Qd3 25.Qe1–+) 24.Be7 Rf1 25.Qf1 Qf1 26.Kf1 Rd3 (27.a4 Rd4–+) 0–1. Frenzel,Lothar – Mitzel,Robert, GER–ch Seniors, 2001.

8.d3 a5 9.c4 ab4 10.ab4 Ra1 11.Ba1 =.

8.d4 e4 9.Ng5 =.

7.Nc3 c6

8.Na4 Ngf6 9.0–0 a5 (9...0–0 10.Ng5+=) 10.Nc5 (10.d4 A) 10...ab4? 11.de5 Qc7 12.ef6 ba3 13.fe7 (13.fg7?! Rg8+–) 13...ab2 14.Nb2 Ra1 15.Qa1+–; B) 10...e4 11.Ne5 b6+=) 10...e4 (worse is 10...Nc5 11.Be5 Qd8 12.bc5 Bc5 13.Qb1+=) 11.Nd4 Nc5 12.bc5 Qc5 13.Ne6 (13.Rb1 0–0–/+) 13...fe6 14.Bh5 (14.Be5 0–0+=) 14...g6–/+ (14...Nh5?! 15.Qh5 Kd7 16.Bg7=) 15.Bg4 (15.Be2 Qd6–/+) 15...Qd6 16.Bh3 (16.f4 ef3 17.Bf3 0–0–/+) 16...0–0 17.d3 b5 18.Rb1 Bd8 (18...e5 19.c4–/+) 19.c4 (19.Bf6 Rf6 20.de4 Bc7–/+) 19...ed3 (19...Bc7 20.g3–/+) 20.cb5 cb5 21.Qd3 b4 22.ab4 (22.Rfc1 Ne4 23.f3 Ng5–/+) 22...ab4 23.Ra1 Be7 24.Qd4 Ra1 25.Ra1 Rc8 26.Ra7 (26.Qd3 Rc4–/+) 26...Rc4–/+ 27.Qd1 Kf7 28.Ra8 (28.Qa1 Ne4–/+) 28...Ne4 29.Bg4 Bf6 30.Bf6 Kf6 31.Be2 (31.g3 Kf7–/+) 31...Rc3 (31...Nc3 32.Qa1 Rc7 33.Ra6–/+) 32.Bf1 (32.Bd3 Qc5 33.Ra1 Nd6–/+) 32...Ra3–+ 33.Rg8 (33.Rc8 Kg7–+) 33...Kf7 34.Rh8 Kg7 35.Re8 e5 36.Qe2 (36.Qe1 Ra2–+) 36...Ra1 37.f3 Nc3 38.Qd3 Rd1 0–1. Pcmvr – Comcat, playchess.de, 2005.

8.Na4 Ngf6 9.Nc5 b6 (9...e4!? 10.Nd4 Nc5 11.bc5 Qc5–/+) 10.Ne6 Qe6 11.0–0 0–0 12.Rc1 a5 (12...b5 13.Ng5 Qf5 14.f4=+) 13.ba5 (13.b5!?=) 13...Ra5–/+ (< 13...ba5 14.c4=) 14.Ra1 b5 15.Ng5 Qf5 16.f4 e4 17.Nh3 Rfa8 18.g4 Qe6 19.f5 Qd6 20.Rf2 Ne5 21.Rg2 Nc4 22.Bc4 dc4 23.g5 Nd5 24.f6 Bf8 25.fg7 Bg7 26.Bg7 Kg7 27.Nf2 Qe5 28.Ng4 Qe7 29.Nf6 Kh8?? 30.Qh5+= Nf6 31.gf6 Qf6 32.Rf1 b4 33.Qg4 Qg6 34.Qf4 Qe6 35.ab4 Ra1? 36.Ra1+– Ra1 37.Kf2 Ra8 38.Qg5 Qg6 39.Qe5 f6 40.Rg6 fe5 41.Rc6 Rd8 42.Ke1 Rg8 43.Rc4 Rg1 44.Kf2 Rh1 45.Re4 Rh2 46.Ke1 h5 47.Re5 Kg7 48.Rf5 h4 49.b5 Kg6 50.Rf4 Kh5 51.b6 Rg2 52.Rf5 Kh6 53.b7 Rg8 54.Rb5 Rb8 55.c4 h3 56.Kf2 1–0. ranzpendang (1610) – thotares (1675), internet, 2007.

8.d3 Qc7 A) 9.0–0 A1) 9...f6 10.e4 (10.Nd2 Nh6 11.Bh5 g6 12.Be2+=) 10...d4 11.Nb1 Bd6 12.c3=; A2) 9...Bf6 10.Nb1 (10.Na4 b5 11.Nc5 Nc5 12.bc5+=) 10...Ne7 11.c4 e4 12.Nd4=; A3) 9...Nh6 10.Na4 (10.Qd2 f6 11.Nb1 0–0 12.c4+=) 10...0–0 11.c4 dc4 12.dc4+=; B) 9.Qc1 B1) 9...Rd8 10.Qd2 (10.b5 Nh6 11.0–0 0–0 12.a4+=) 10...f6 11.0–0 Nh6 12.Rfb1+=; B2) 9...a5 10.0–0 (10.b5 Nh6 11.0–0 0–0 12.Qd2+=) 10...Nh6 11.b5 0–0 12.Qd2+=; B3) 9...Nh6 10.0–0 (10.Qd2 0–0 11.0–0 f5 12.Rfe1–/+) 10...0–0 11.Qd2 b5 12.a4+=; C) 9.Na4 C1) 9...Ngf6 10.0–0 (10.Nc5 Bc5 11.bc5 e4 12.Nd4+=) 10...0–0 11.Nc5 Bc5 12.bc5+=; C2) 9...b5 10.Nc5 Bc5 11.bc5 Ne7 12.0–0=; C3) 9...Nh6 10.c4 (10.0–0 0–0 11.c4 dc4 12.dc4+=) 10...dc4 11.dc4 0–0 12.Qc2+=.

8.d3 f6 A) 9.0–0 A1) 9...Rd8 10.Na2 (10.Nb1 Nh6 11.c4 dc4 12.dc4+=) 10...Nh6 11.c4 0–0 12.Nc3=; A2) 9...Qc7 10.Na2 (10.Na4 b5 11.Nc3 a5 12.Nd2+=) 10...Nb6 11.Nd2 0–0–0 12.c4=; A3) 9...Nh6 10.Na4 (10.Na2 Nb6 11.Qc1 0–0 12.c4+=) 10...b5 11.Nc5 Nc5 12.bc5+=; B) 9.Nd2 B1) 9...Rd8 10.0–0 (10.Nb3 Nh6 11.Bh5 g6 12.Be2=) 10...Nh6 11.Bh5 g6 12.Be2=; B2) 9...f5 10.Nb3 (10.0–0 Nh6 11.Bh5 g6 12.Be2+=) 10...Nh6 11.Bh5 g6 12.Be2+=; B3) 9...Nh6 10.Bh5 (10.0–0 0–0 11.Nb3 b6 12.Qd2+=) 10...g6 11.Be2 b6 12.Nb3+=; C) 9.d4 C1) 9...e4 10.Nd2 Nh6 11.Na4 0–0 12.Nc5=; C2) 9...a5 10.e4 (10.b5 e4 11.bc6 bc6 12.Nd2+=) 10...Nh6 11.ba5 Ra5 12.Qd2=; C3) 9...Nh6 10.e4 (10.0–0 e4 11.Nd2 0–0 12.Na4+=) 10...0–0 11.0–0 a6 12.Re1+=.

8.d3 Bf6 A) 9.Qd2 A1) 9...Ne7 10.Na4 (10.0–0 0–0 11.Na4 Rad8 12.c4+=) 10...0–0 11.c4 Bg4 12.Nc3+=; A2) 9...Rd8 10.Na4 (10.0–0 Ne7 11.a4 0–0 12.b5+=) 10...Nh6 11.c4 0–0 12.Nc3=; A3) 9...Nh6 10.Na4 (10.0–0 0–0 11.a4 Rfe8 12.Rfb1+=) 10...0–0 11.c4 Rfd8 12.Nc3+=; B) 9.0–0 Ne7 10.Nd2 (10.d4 e4 11.Nd2 0–0 12.Na4+=) 10...a5 11.b5 0–0 12.Bg4+=; C) 9.Na4 C1) 9...b6 10.c4 (10.0–0 Ne7 11.c4 0–0 12.Rc1=) 10...Ne7 11.0–0 0–0 12.Rc1=; C2) 9...Ne7 10.0–0 (10.c4 0–0 11.0–0 Rfe8 12.d4=) 10...0–0 11.c4 Bf5 12.Nc5=; C3) 9...Nh6 10.0–0 (10.c4 0–0 11.0–0 Nf5 12.Nc3+=) 10...0–0 11.c4 Nf5 12.Nc3+=.

8.d3 Ngf6 9.0–0 0–0 (9...a5 10.Na4 (10.Ng5 ab4 11.ab4 0–0 12.Na2+=) 10...b6 11.c4 ab4 12.ab4=; 9...h6 10.Na4 (10.Qd2 0–0 11.Na4 b6 12.c4=) 10...b6 11.c4 0–0 12.Rc1=) 10.Nd2 (10.Ng5 Bf5 11.f4 ef4 12.Rf4+=; 10.Na4 b6 11.c4 Rfd8 12.Qc2=) 10...Ne8 (10...a5 11.ba5 Rfe8 12.Rb1+=) 11.f4 (11.Na4 Qc7 12.Nb3=) 11...f6 (11...ef4 12.ef4+=) 12.Qe1 (12.f5=) 12...Qc7 13.f5 Bf7 14.e4 (14.Qh4 a5=) 14...Nb6 15.Rf3 c5 16.b5 d4 17.Na2 Na4 18.Bc1 Ba2 19.Ra2 Nc3 20.Rb2 Nd6 (worse is 20...Ne2 21.Qe2 Nd6 22.Rh3+=) 21.Rh3 h6 (21...Ndb5 22.Nc4–/+) 22.Bh5 Nf7 (22...Ndb5 23.Nc4 Nd6+=) 23.Nf3 (better is 23.Bf7 Rf7 24.Rg3=) 23...c4–+ 24.Rb1?? (24.Bf7 Rf7 25.b6 ab6–+) 24...Ng5 (better is 24...Nb1 25.Bf7 Rf7 26.Bh6 cd3 (26...Na3?! 27.Bc1 Rff8 28.Qh4–+) 27.cd3 Rc8 (worse is 27...Na3 28.Bd2 Rff8 29.Qh4–+) 28.Qb1 gh6 29.Rh6 Ba3–+) 25.Ng5–/+ fg5 0–1. Erdmann,Krzysztof – Karpacz,Piotr (1785), Mistrzostwa Miedzywojewodzkie Juniorow Poland, 2011.

8.d3 Ngf6 9.Na4 A) 9...Bg4 10.0–0 (10.c4 0–0 11.0–0 dc4 12.dc4+=) 10...0–0 11.Nc5 b6 12.Nb3=; B) 9...0–0 10.0–0 (10.Nc5 a5 11.0–0 ab4 12.ab4+=) 10...Bg4 11.Nc5 Bf3 12.Nd7=; C) 9...b6 10.c4 (10.0–0 0–0 11.c4 Rfe8 12.Qc2+=) 10...0–0 11.0–0 Rfe8 12.Qc2+=.

8.d3 Ngf6 9.Ng5 A) 9...a5 10.Ne6 (10.b5 Bf5 11.0–0 0–0 12.f4=) 10...Qe6 11.b5 0–0 12.0–0=; B) 9...0–0 10.0–0 (10.Ne6 Qe6 11.0–0 a6 12.Na2+=) 10...a5 11.b5 Rac8 12.Rb1=; C) 9...Bf5 10.0–0 (10.Qd2 0–0 11.0–0 Ng4 12.e4+=) 10...h6 11.Nf3 0–0 12.Qd2+=.

8.d3 Nh6 A) 9.Rb1 A1) 9...0–0 10.Na4 (10.0–0 b5 11.Qd2 f5 12.Nd1–/+) 10...b5 11.Nc5 Nc5 12.Be5+=; A2) 9...f5 10.Na4 (10.0–0 0–0 11.Na4 b6 12.c4+=) 10...b6 11.0–0 0–0 12.c4+=; A3) 9...b5 10.Qd2 (10.0–0 0–0 11.Na2 d4 12.Ra1–/+) 10...0–0 11.0–0 Qc7 12.Nd1–/+; B) 9.0–0 B1) 9...0–0 10.Na4 Qc7 11.c4 dc4 12.dc4+=; B2) 9...b5 10.Qd2 (10.Nb1 0–0 11.Nbd2 a5 12.Nb3+=) 10...0–0 11.Na2 Bf6 12.c4+=; B3) 9...Qc7 10.Na4 (10.Qd2 f6 11.Nb1 f5 12.c4+=) 10...0–0 11.c4 dc4 12.dc4+=; C) 9.Na4 C1) 9...Bf6 10.0–0 (10.c4 0–0 11.0–0 Rfe8 12.Nc3=) 10...0–0 11.c4 Rfd8 12.cd5=; C2) 9...b6 10.c4 (10.0–0 0–0 11.c4 Rfd8 12.cd5=) 10...0–0 11.0–0 Ng4 12.Nc3=; C3) 9...Qc7 10.Nc5 (10.0–0 0–0 11.c4 dc4 12.dc4+=) 10...Bc5 11.bc5 f6 12.d4+=.

6.Be2 Ngf6

7.0–0 c6 8.d4 e4 9.Nfd2 Be7 10.c4 0–0 11.Nc3 h5 12.c5 Qc7 13.Bh5 g6 14.Be2 Kg7 15.f3 Rh8 16.f4 Rh4 17.g3 Rh3 18.Rf2 Rah8 19.Nf1 b6 20.Rg2 Nh5? 21.Kf2 bc5 22.dc5 Ndf6? 23.Bh5 R8h5= 24.g4 Bg4 25.Rg4 Ng4–/+ 26.Qg4 Rh2 27.Nh2 Rh2 28.Kf1 Rb2 29.Ne2 Bf6 30.Rd1 Rb3 31.Kf2 Ra3 32.Ng3 Ra2 33.Kf1 Rh2 34.Nf5 Kf8 35.Nd6 Bc3 36.Rb1 Rh1 (36...Rh1 37.Ke2 Rb1–+) 0–1. Kappel,Ray – Schalkwijk,Peter, 39. LSS No Engine Cup Preliminary, 2011.

7.0–0 Be7 8.d4 e4 ½–½. Klement – Wildner, 1993.

7.Nc3 a6 8.0–0 =.

7.Nc3 c6 8.0–0 =.

7.d3 a5 8.Nc3 +=.

7.d3 c6 8.Nbd2 Be7 9.Rc1 (9.Ng5 Bf5+=) 9...0–0 (9...a5 10.c4+=) 10.0–0 a5 11.c4 ab4 12.cd5 (better is 12.c5!? Nc5 13.Be5+=) 12...Nd5–/+ 13.Ne4 Qc7 14.ab4 Bb4 (14...Ra2 15.Rb1–/+) 15.d4 f6 (15...Ba3!? 16.Ba3 Ra3–/+) 16.de5= Ne5 (better is 16...Ba3!? 17.Ba3 Ra3 18.ef6 N7f6=) 17.Ne5+/– fe5 18.Ng5 Qe7 (18...Bf7!?+=) 19.Ne6+/– Qe6 20.Bc4 e4 21.Qd4 Qe7 22.Bd5 cd5 23.Qd5 Kh8 24.Rc4 Rfe8 25.Bg7! Qg7 (25...Qg7 26.Rb4 Deflection (26.Rb4 Overloading); 25...Kg7 26.Qd4 Double attack) 26.Rb4+– Re7 (26...Rad8 27.Qb7 Rc8 28.Qa6+–) 27.Rfb1 (27.Re4 Rd7 28.Qb5 Rad8+–) 27...Rd7 28.Qe4 Rad8 29.g3 Re7 30.Qh4 Rdd7 31.Qf4 Rf7 32.Qb8 Rf8 33.Qa7 Qf6 34.Rf4 Qg7 35.Rf8 Qf8 36.Rb7 Rb7 37.Qb7 Qd8 38.h4 h5 39.Qf7 Qd5 1–0. Luis,Henri (1680) – Citterio,Jean_Claude (1770), Pau FRA, Men Ch Open C, 2012.

7.d4 e4 8.Ne5 c6 (8...Be7 9.c4 dc4 10.Nc4= (10.Bc4 Ne5 11.de5 Qd1 12.Kd1 Ng4 13.Be6 Nf2 14.Ke2 Nh1–/+)) 9.c4 a5 (9...dc4 10.Nc4 (10.Bc4? Ne5 11.de5 Qd1 12.Kd1 Ng4–+) 10...Qd5 11.0–0=) 10.b5 Qb8 11.Nd7 Bd7 12.bc6 bc6 13.Qc2 Bd6 14.h3 0–0 15.Nc3 Ra7 16.0–0 Rb7 17.Rfb1 Qa7 18.Na4 White plans c5 (18.Bc1 Rfb8=) 18...Rfb8 19.c5 Bc7 20.Bc3 Bf5 21.Rb7 Qb7 22.Nb6 Nd7 (22...Bb6 23.Rb1 Qa7 24.cb6 Rb6 25.Rb6 Qb6 26.Qa4+=) 23.Ba5+= Nb6 24.Bb6 Bb6 25.Rb1 Qa7 26.cb6 Rb6 27.a4 g6 (27...Bd7 28.Rb6 Qb6 29.Qc5 Qb1 30.Bf1+/–) 28.Ra1 (28.Rb6 Qb6 29.Qc5 Qb7+/–) 28...Qa8 29.a5 Rb7 30.a6 Bc8 31.Qa2 Ra7 32.Rb1 h5 (32...Ba6 33.Ra1 Be2 34.Qa7 Qa7 35.Ra7+/–) 33.Qa3 (33.Rb6 Kh7+–) 33...Qb8?? (better is 33...Ba6 34.Ra1 Be2 35.Qa7 Qa7 36.Ra7 g5+/–) 34.Rb8+– 1–0. Tomic,Srecko – Thomas,Roy (2405), corr olm14 qual GP3 B5, 2000.

7.d4 e4 8.Ng5 =+.

7.Ng5 =+.

6.Ng5 Bf5

7.Nc3 Ngf6 =.

7.c4 Be7 8.Nf3 Ngf6 9.Nc3 (9.c5 Qe6=) 9...c6 10.cd5 Nd5 (worse is 10...cd5 11.Nb5 Qb6 12.Ne5+/–) 11.Be2 (11.Nd5 Qd5 12.d4 e4=) 11...0–0 (11...Nc3 12.Bc3 0–0 13.0–0+=) 12.0–0 (12.e4 Nc3 13.dc3 Qd1 14.Rd1 Be6+=) 12...Rfe8 (12...Rfd8 13.d4 Nc3 14.Bc3+=) 13.Rc1 (13.Nd5 Qd5 14.d3=) 13...Bf6 (13...Nc3 14.Bc3 Red8 15.Qb3=) 14.d4 (14.e4 Nc3 15.dc3 Qd1 16.Rfd1 Be6=) 14...e4= 15.Nd2 Bd8 (15...N7b6 16.Nd5 Nd5 17.Qc2=) 16.Bg4 (16.Nc4!? Qg6 17.Nd5 cd5 18.Bh5=) 16...Bc7+= 17.g3 Nc3 (17...Bg4 18.Qg4 N7f6 19.Qf5 Nc3 20.Bc3+=) 18.Bc3 Bg4 19.Qg4 Nf6 20.Qe2 Qe6 (20...Nd5 21.Qg4 Qe7 22.Nb3+=) 21.Kg2 (21.f3 ef3 22.Rf3 Rad8+=) 21...Rad8 (21...Nd5 22.Rfd1–/+) 22.Bb2 a6 23.Rfe1 (23.f3 Re7+=) 23...Ng4 (23...Rd5 24.Red1–/+) 24.Nf1 (24.Rc4 Rd5+=) 24...Rd5–/+ 25.Rc5 (25.Nd2 Nf6–/+) 25...f5 (25...Nf6 26.Rec1–/+) 26.Rec1 (26.Rd5 cd5 27.Nd2 Qg6+=) 26...Red8 (26...Nf6 27.Nd2–/+) 27.Rd5 (27.Nd2 Nf6+=) 27...Rd5 28.Rc5 (28.Nd2 Qg6+=) 28...Bd6 (28...Nf6 29.Nd2–/+) 29.Rd5+= Qd5 (29...cd5 30.Nd2+=) 30.Nd2 Kf7 (30...Nf6 31.Nc4+=) 31.Qc4 (31.Nc4 Bc7=) 31...Ke6 (31...Nf6 32.Qc3+=) 32.h3 (32.Qc3 Nf6=) 32...Nf6+= 33.Kf1 (33.Qc3 Kf7+=) 33...Nd7 (33...Qc4 34.Nc4 Bc7 35.Ke2+=) 34.Ke2 (34.Qc3 Kf7+=) 34...Nb6 35.Qd5 Kd5 36.Kd1 (36.g4 f4+=) 36...Nc4 37.Kc2 Nd2 38.Kd2 Kc4 (38...g5 39.Ke2–/+) 39.Kc2 (39.Bc1 g5–/+) 39...g5 40.Bc1 h5 41.Bb2 (41.Bd2 b6–/+) 41...Be7 (41...h4!? 42.gh4 gh4–+) 42.Bc1 Bd8 43.Bd2 (43.Kd1 a5 44.ba5 Ba5–+) 43...Bc7 44.Bc1 a5 45.Bd2 Bd6 46.ba5 Ba3 47.Bc3 (47.Kd1 Bb4–+) 47...Bb4 48.Bb4 (48.Bd2 Bd2 49.Kd2 Kb5–+) 48...Kb4 49.Kb2 Ka5 50.Ka3 (50.Kb3 Kb5–+) 50...Kb5 51.Kb3 b6 52.Kc3 Ka4 53.Kc4 (53.Kb2 Kb4 54.Kc2 Kc4–+) 53...Ka3 54.d5 cd5 55.Kb5 (55.Kd5 b5 56.Ke6 b4 57.Kf5 b3 58.Ke4 b2–+) 55...Kb3 56.Kb6 Kc4 57.h4 (57.Kc6 d4 58.ed4 Kd4–+) 57...gh4 58.gh4 d4 0–1. Sundin,Tommy – Sjoedin,Bengt, Karlstad op SWE, 1988.

7.c4 f6 8.Nf3 c6 9.d4 e4 10.Nfd2 Qe6 11.Nc3 Bd6 12.Qb3 White prepares b5 12...Ne7 13.a4 White intends b5 13...Qf7 14.cd5 cd5 15.Ba3 Be6 16.b5 Ba3 17.Qa3 0–0 18.Be2 Rfc8 19.0–0 ½–½. Fica Anabalon,Brandon – Vargas Alarcon,M Guille, IRT Juventud Provincia del BioBio, 2015.

7.c4 f6 8.Nf3 c6 9.d4 e4 10.Nfd2 Qe6 11.Nc3 Bd6 12.Qb3 White prepares b5 12...Ne7 13.a4 White intends b5 13...Qf7 14.cd5 cd5 15.b5 Be6 16.Ba3 Ba3 17.Qa3 f5 18.g3 (18.Qd6 0–0=) 18...g5 (18...Rc8 19.Rc1=) 19.Ne2 (19.Rc1 Rc8=) 19...Ng6 (19...Rc8 20.h4 g4 21.Qd6=) 20.f4 (20.Rc1 Qe7 21.Qe7 Ke7=) 20...h6 (20...gf4 21.gf4 Rc8 22.a5=) 21.Nb1 ½–½. Kasparov,Sergey (2490) – Mohr,G (2510), 17th Open A Graz AUT, 2010.

7.c4 h6 8.c5 Qe7 9.Nf3 c6 10.d3 Ngf6 11.Be2 Qe6 12.Nbd2 Be7 13.Qc2 0–0 14.e4 (14.Qc3!?+=) 14...Bh7 15.h3 a5 (15...b6!?+=) 16.0–0= Ra7 17.Qc3 de4 18.de4 Ne4 19.Ne4 Be4 20.Rfe1 (20.Ne5 Ne5 21.Qe5 Qg6=) 20...ab4 21.ab4 Ra1 22.Ra1 Bf6 23.Ra7 Rb8 24.b5? (24.Nd2 Bd5 25.Qc2 Nf8+=) 24...Bd5 (24...Bf3 25.Qf3 e4 26.Qa3 Bb2 27.Qb2–+) 25.b6 (25.Qe3 Be7 26.Ba3 cb5 27.Bb5 Bc6 28.Bc6 bc6–/+ (28...Qc6?! 29.Ne5 Ne5 30.Qe5=)) 25...Bf3 26.Bf3 e4 27.Bg4 Qg4 28.hg4 Bc3 29.Bc3 Nc5 30.Be5 Rd8 31.Bf4 Ne6 32.Be3 Rd7 33.Ra8 Kh7 34.f4 ef3! 35.gf3 g5 36.Rc8 Kg6 37.Rg8 Kf6 38.Rh8 Kg7 39.Ra8 c5 40.Ra7 Kf6 41.Kf2 Ke5 42.Ra5 Kd6 43.Rb5 Kc6 44.Rb1 Rd8 45.Kg3 Ra8 46.Rh1 Kb6 47.Rh6 Kb5 48.Rf6 Rf8 49.Kf2 Kc4 50.Ke2 (50.Rf5 f6 51.f4 gf4 52.Bf4 Ng7–+) 50...b5 51.Kd2 Rd8 52.Kc2 Rd7 (better is 52...Rd3!? 53.Bg5 Rc3 54.Kb2 Ng5 55.Rf4 Kd3 56.Rf5 Rc2 57.Kb1–+) 53.Rf5 b4 0–1. Frech,Josef (1825) – Huguet,Bernard (2185), Wch Seniors, 1998.

7.c4 h6 8.Nf3 Ngf6 9.cd5 (9.Nc3 0–0–0 10.Be2 Kb8=) 9...Nd5 10.Nc3 Nc3 11.Bc3 Qe6 (11...Be7 12.Be2=) 12.Bb5 (12.d4 0–0–0=) 12...c6 13.Ba4 Bd6 14.Bb3 Qe7 15.Qe2 0–0 16.d4 (16.e4!? Bg6 17.0–0=) 16...e4+= 17.Nd2 Qg5 18.f4 ef3 19.Nf3 Qe7 20.0–0 Rae8 21.Rae1 Bg6 22.Qb2 Bd3 (22...Nf6 23.d5=) 23.Rf2 Qe4 (23...Nf6 24.d5 c5+=) 24.Bc2 (better is 24.d5!? Ne5 25.Ne5 Be5 26.Be5 Qe5 27.Qe5 Re5 28.d6=) 24...Bc2+= 25.Qc2 Nb6 (25...f5 26.Bb2+=) 26.Qe4= Re4 27.Nd2 Re6 28.e4 Nd5 29.Bb2 f5 30.e5 Be7 31.Nc4 f4 32.Rf3 g5 33.h3 h5 34.Re4 Rf7 35.Bc1 g4 36.hg4 hg4 37.Rf1 Nc3 38.Ree1 (38.Rff4!? Rf4 39.Rf4 Ne2 40.Kf2 Nc1 41.Rg4 Kf7 42.Ke3+=) 38...Bh4–+ 39.Nd6 Rd7 (39...Rf8 40.Ne4 Be1 41.Re1–+) 40.Bf4? (better is 40.Bd2 Be1 41.Re1+=) 40...Be1–+ 41.Re1 Rdd6! 42.ed6?? (42.Bd2 Rd4 43.Bc3–+) 42...Re1 43.Kf2 (43.Kh2 Kf7 44.Bd2 g3 45.Kh3 Rh1 46.Kg4 Ne4–+) 43...Re4 44.Be5 Kf7 0–1. Andress,Silvio (1760) – Gebigke,Martin (2150), Berlin GER, Werner Ott Open, 2014.

5.Nf3 Be7??

6.Be5 Qb6 7.Bg7 Bf6 8.Bh8 Bh8 9.d4 Nd7 10.c4 dc4 11.Qc2 (11...Ngf6 12.Bc4+–) 1–0. Sternik,Ryszard – Miller,C, corr SOK–122, 1999.

6.Be5+– Qd8 7.Bg7 Bf6 8.Bh8 Bh8 9.Nc3 (9.d4 a5+–) 9...Nd7 10.Be2 (10.d4 Ngf6+–) 10...Ngf6 11.Nd4 Ke7 (11...Qe7 12.Ne6 fe6 13.Nb5+–) 12.0–0 Qg8 13.Ne6 fe6 14.d4 Ne4 (14...Kd8 15.Nb5+–) 15.Ne4 de4 16.c3 Nf6 17.Qb3 Qg6 18.Qc4 Nd5 19.Qc5 Kd7 20.b5 (20.Kh1 Rg8 21.Rg1 b6 22.Bb5 Kc8+–) 20...Bf6 21.a4 (21.Rfd1 Be7 22.Qc4 Rg8+–) 21...Be7 22.Qc4 Rg8 23.g3 h5 24.Rad1 (24.a5 h4 25.a6 hg3 26.fg3 Ne3+–) 24...h4 25.g4 h3 26.Kh1 Rf8 27.Qb3 (27.a5 Kc8+–) 27...Bh4 (27...Nf6 28.Rg1+–) 28.c4 Nf6 29.Qa3 (better is 29.f3!? ef3 30.Bf3 Ne4+–) 29...Rg8 30.f3 (30.g5 Bg5 31.c5 Be3+–) 30...ef3 31.Bf3 Ng4 32.Qd3 (32.Rd2 Nf2 33.Rdf2 Bf2 34.Qe7 Ke7 35.Bc6 Qg2 36.Bg2 hg2) 32...Qd3 33.Rd3 Nf2 34.Rf2 Bf2 35.Rd1 Be3 36.Bb7 Rf8 37.d5 (37.a5!?+=) 37...e5= 38.a5 (38.Bc6 Kd6=) 38...Kd6 39.Re1 Bc5 (39...Rf2 40.Rg1=) 40.Rb1 e4 41.b6 cb6 (42.Bc6 e3–/+) 0–1. Brzoza,Miroslaw – Sokolik,Bogdan, corr 1. AMM Poland, 1991.

6.Ne5?! Bf6 7.d4 Nd7 8.Nd7 Qd7 +/–.

4.e3 Be7

5.c4 d4 6.ed4 (6.Nf3 Bf6=) 6...ed4 7.d3 (7.c5 Qe6 8.Qe2 Qf6=) 7...c5 8.b5 (8.Nd2!? Qe6 9.Be2=) 8...Nf6–/+ 9.Be2 0–0 10.Nf3 Bf5 (10...a6 11.a4–/+) 11.0–0=+ Nbd7 (11...Re8 12.Re1=+) 12.Nbd2 Ng4 (12...Rfe8 13.Re1=+) 13.h3 (13.Ne4 Qg6=+) 13...Nge5 14.Ne5 Ne5 15.Nf3 (15.Ne4 Qb6=+) 15...Ng6 16.Bc1 Bd8 (16...Nf4 17.Re1=+) 17.g4 (17.Qd2 Re8=+) 17...Bd7 18.Kg2 (18.Ng5 Nf4 19.Ne4 Qe5=+) 18...f5 19.g5 Bc7 (19...Ba5 20.Ra2–/+) 20.Rh1 (20.Kg1 f4–/+) 20...Rae8 (20...a6 21.Rb1–/+) 21.Bd2 Rf7 22.Bf1 Rfe7–+ 23.Qc2 Nf4 Black fights for the Initiative 24.Bf4 Qf4 25.Rd1?? Ra8 26.Qd2 a6 27.a4 ab5 28.ab5 Qd2 29.Rd2–/+ f4 30.Be2 Kf7 31.Nh2 Ra3 32.Bh5 g6 33.Bf3 b6 34.Rhd1 Bf5 35.Ng4 Bg4 36.Bg4 Kg7 37.Bf3 h6= 38.gh6 Kh6 39.Be4 Kg5 40.Rh1 Kf6 41.Kf3 Rh7 42.Rdd1 Rh4 43.Rdg1 g5 44.Rg4 Rg4 45.hg4+= Bd8 46.Rh7 Ke6 47.Bf5 Kf6 48.Rh6 Ke7 49.Re6 Kf7 50.Rh6 Kf8 51.Rh7 Ra8 52.Be4+/– Rb8 53.Bc6 Rc8 54.Ke4 Kg8 55.Rd7 Kf8 56.Ke5 Kg8?? 57.Ke6 Kf8? 58.Ra7 Kg8 59.Ra8 Ra8+/– 60.Ba8 Kf8 61.Kd7 Be7 62.Kc7 Ke8 63.Kb6 Kd8 64.Kc6 Kc8 65.Bb7 Kb8 66.Ba6 Bf8 67.b6 Bh6?? 68.Kd7 Bf8 69.Bc8 Bg7 70.b7 (70...f3 71.Kc6+–) 1–0. Liepert,Luise – Gruenenwald_Reimer,Evi, DamenBL2, 1993.

5.c4 Nf6 6.cd5 Nd5 7.d4 =.

5.Nf3 f6 6.c4+= c6 (6...a5 7.Nc3+=) 7.Nc3 Be6 8.cd5 Bd5 (8...cd5 9.d4 e4 10.Nd2=) 9.Nd5 cd5 10.Bb5 Kf7 (10...Nc6 11.0–0+=) 11.Ba4 Nd7 (11...Nc6 12.Rc1+=) 12.0–0 (12.Bd7 Qd7 13.Be5 a5+/–) 12...Nh6 (12...Nb6!?+=) 13.Bb3 (13.Bd7 Qd7 14.Be5+/–) 13...Rhd8 (13...Nb6 14.e4 Kf8 15.Qe2 de4 16.Qe4+–) 14.Rc1 (better is 14.e4+–) 14...Kf8 15.Qc2 e4 16.Nd4 Rac8?? (16...Ne5 17.f3 Nd3 18.fe4 Nc1 19.Bd5+/–) 17.Qd1?? (better is 17.Qc8 Rc8 18.Rc8 Kf7 19.Nb5+–) 17...Ne5 18.f4 (18.f3 Nd3 19.Rc2 Rc2 20.Qc2 Qe5+/–) 18...Nd3 (better is 18...Rc1 19.Bc1 Nd3=) 19.Rc8+/– Rc8 20.Bc3 a5 (20...f5 21.Bc2+/–) 21.ba5 g6 (21...Qd7 22.Ba4 Qd6 23.Bb5+/–) 22.Qa1 Ng8? (better is 22...Kg8+/–) 23.Qa2+– Rd8 (23...Qa3 24.Qa3 Ba3 25.Bd5+–) 24.f5 (better is 24.Bd5 Qd5 25.Ne6 Qe6 26.Qe6+–) 24...Kf7 25.fg6 (better is 25.Ne6!? Rd7 26.Ba4+–) 25...hg6+/– 26.Ne2 Nc5 (26...Kg7 27.Bc2+/–) 27.Bb4 Qe5 28.Bc3 (better is 28.Rb1+/–) 28...Qd6+– 29.Bb4?? (29.Nf4 Nb3 30.Qb3 Rd7+–) 29...Qe5 30.Bc3?? (30.Nf4 Nb3 31.Bc3 Nc1 32.Rc1 Qf5+–) 30...Qd6 31.Bb4?? (31.Nf4 Nb3 32.Qb3 Rd7+–) 31...Qe5 32.Bc3?? (better is 32.Nf4 Nb3 33.Qb3 Bb4 34.Qb4+–) 32...Qd6= ½–½. Toth,Tamas (1900) – Eberth,Zoltan (2180), Sarospatak–ch, 2000.

5.f4 Nd7 =.

5.c4 c6

6.Qc2 Be6 7.c5 Qc7 8.Be2 Nd7 9.d3 (9.Nc3 h6=) 9...f5 (9...a5!?+=) 10.Nf3 Bf6 11.Nbd2 Ne7 12.e4 (12.h4 h6=) 12...0–0+= 13.0–0 Kh8 14.Rfe1 g5 (14...Ng6 15.g3+=) 15.h3= Rg8 16.Nh2 Raf8 17.f3 (17.ef5 Nf5 18.Bg4 Rg6+=) 17...Ng6 (17...h5 18.Nb3+=) 18.Bf1 (18.ef5!? Bf5 19.Ng4=) 18...h5+= 19.g3 fe4 20.de4 Bg7?? (20...h4 21.gh4 gh4 22.ed5 Nf4 23.Ng4 cd5 24.Kh1–/+) 21.Bg2?? (better is 21.ed5 Bf5 22.d6 Bc2 23.dc7+–) 21...d4–/+ 22.Nc4 Nf6 Black prepares the advance g4 23.Rad1 g4 (23...h4!? 24.g4 Nf4–/+) 24.h4 gf3 25.Nf3 Ng4 26.Bc1 Bh6 27.Ng5 Bg5 28.Bg5 Rf2 29.Rd2 Rgf8 30.Rf2 Rf2 (worse is 30...Nf2 31.Bh6 Rf6 32.Nd6+=) 31.Re2 Rf8 32.Nd6 b6 33.Qd3 (33.Rd2!?=) 33...bc5+= 34.bc5 Qa5 35.Nb7 (35.Nf5!? Rb8 36.Bh3+=) 35...Qa4–+ 36.Rb2?? (better is 36.Rc2 Bb3 37.Rc1–+) 36...Bc4 37.Rb4 Bd3 (better is 37...Qb4! 38.ab4 Bd3–+) 38.Ra4–/+ a6 (38...Rf2 39.Bh3 (39.Ra7?? Ra2 40.Nd6 Ra1 41.Bf1 Bf1 42.Nf7 Kg8 43.Nh6 Nh6 44.Bh6 Bd3 45.Kf2 Rf1 46.Kg2 Rf6–+) 39...Rf3 40.Bg4 Rg3 41.Kf2 Rg4 42.Nd6 Nh4 43.Nf7 Kg7 44.Ne5 Rg2 45.Ke1 Rg5 46.Nd3+=) 39.Na5 (better is 39.Nd6=) 39...Rf2–/+ 40.Rb4?? (better is 40.Nb3–/+) 40...Re2–+ 41.Rb8 Kg7 42.Rb7 Kg8 43.Rb8 Nf8 44.Be7 (44.Bd2 Rd2 45.Bf3–+) 44...Re1 45.Bf1 Rf1 0–1. De Souza,Kim Garcia (1775) – Nemeth Junior,Henrique (1965), Curitiba Brazil, Regional Championship, 2015.

6.Qc2 Be6 7.d4 (7.cd5 cd5 8.Bb5 Nd7=) 7...e4 8.Nc3 a6 9.Nge2 Nf6 10.Nf4 (10.c5 Qc7=) 10...0–0 (10...dc4 11.Ne4 Ne4 12.Qe4+=) 11.Be2 (11.c5 Qc7=) 11...Nbd7 (11...dc4 12.Ne4 Ne4 13.Qe4=) 12.0–0 (12.c5 Qc7=) 12...b5 (12...dc4 13.Ne4 Ne4 14.Qe4=) 13.c5 (13.cd5 cd5 14.a4 ba4 (worse is 14...Qb4 15.ab5 ab5 16.Nb5+/–) 15.Na4 Rfc8=) 13...Qc7= 14.f3 Bf5 15.fe4 (15.a4 ef3 16.Qf5 fe2 17.Nce2 Rfe8=) 15...Be4 16.Bd3 (16.Ne4 Ne4 17.a4 Ndf6=) 16...Bd3 17.Qd3 (worse is 17.Nd3 Ng4 18.Rf4 f5–/+ (worse is 18...Ne3 19.Qe2+=)) 17...Rae8 (17...a5 18.Rae1=) 18.Rae1 Bd8 (18...a5 19.Bc1=) 19.e4 de4 (19...Ne4 20.Ne4 Bh4 21.Re2 de4 22.Re4 Re4 23.Qe4+=) 20.Ne4+= Ne4 21.Re4 Re4 22.Qe4 Bg5 (22...Nf6 23.Qf3=) 23.d5+/– Bf4 (23...Nf6 24.Qf5 Bf4 25.Rf4 Nd5 26.Rh4+/–) 24.Rf4 (24.Qf4 Qf4 25.Rf4 cd5+/–) 24...cd5 25.Qd4 f6 26.Qd5 Kh8 27.Re4 Nb8 28.Re6 Rd8 (better is 28...Qc8!?+/–) 29.Rf6+– Qe7 (29...Rd5?? 30.Rf8) 30.Re6 Qh4?? (30...Qf8 31.Qh5 Kg8+–) 31.Bf6! (31.Bf6 gf6 32.Qd8 Kg7 33.Re7 Kg6 34.Qd3 f5 35.Qd6 Qf6 36.Re6 Qe6 37.Qe6 Kg7 38.Qe5 Kg6 39.Qb8+–) 1–0. Urbanec,Miroslav – Hruska,Tomas, CSR–ch Army Prague, 1965.

6.Nc3 a6 7.d3 Nf6 8.e4 (8.Nf3 0–0=) 8...d4 9.Nce2 0–0 (9...c5 10.f4 b6 11.Nf3+=) 10.f4= ef4 11.Nf3 Ng4 12.Bd4 Bf6 13.c5 (13.Bc5 Qc7 14.Bf8 Ba1 15.Qa1 Kf8+=) 13...Qe7= 14.Qd2 (worse is 14.Nf4 Bd4 15.Nd4 Qf6–+) ½–½. Shao Shuai – Kahn,E (2280), FSIMB July, Budapest HUN, 2009.

6.cd5 cd5 7.Nf3 Nd7 =.

6.Nf3 Nd7 7.Be2 (7.cd5 cd5 8.Bb5 Bf6=) 7...Bf6 (7...dc4 8.Bc4 Ngf6 9.d4=) 8.0–0 (8.d4 e4 9.Nfd2 Ne7=) 8...Ne7 (8...e4 9.c5 Qc7 10.Bf6 Ngf6 11.Nd4=) 9.h3 (9.d4 e4 10.Nfd2 0–0+=) 9...0–0 (9...dc4 10.Nc3 Qe6 11.Ne4=) 10.Qc2 (10.d4 e4 11.Nfd2 Nf5=) 10...Re8 (10...a5 11.c5 Qe6 12.d4=) 11.c5 (11.d4 e4 12.Nfd2 b6=) 11...Qc7 12.d3 (12.d4 b6=) 12...Nf8 (12...b6 13.Nbd2=) 13.Nbd2 Ne6 (13...Nfg6 14.d4=) 14.Nh2 g6 (14...Ng6 15.Bh5=) 15.Ng4 (15.f4 h5 16.fe5 Be5 17.Be5 Qe5=) 15...Bg7= 16.Nf3 (16.f4 ef4 17.Bg7 Kg7 18.Qb2 d4 19.ed4 Nd5+=) 16...f6 (16...d4 17.Rfe1=) 17.Qc3 Nf5 18.Bd1 (18.Rfe1 d4 19.Qc1 h5=) 18...h5 (18...b6 19.Re1=) 19.Ngh2 Kh7 (19...b6 20.Re1=) 20.Nd2 (20.Re1 d4 21.Qc2 de3 22.fe3 Qd7=) 20...d4 21.ed4 ed4 (21...Nfd4 22.Nhf3=) 22.Qc1 (22...Nf4 23.Qb1=+; 22.Qc2!?=). kiloracer (2105) – diggitus (1970), net–chess.com, 2005.

6.Nf3 Bf6 7.cd5 e4 8.Nd4 cd5 9.d3 +=.

5.Nf3 Nd7

6.Bb5 c6 7.Be2 =+.

6.c4 =.

5.Nf3 Bf6

6.c4 c6 7.d4 e4 8.Ne5 g6 (8...Be6 9.Be2=) 9.Be2 (9.cd5 cd5 10.Nc3 Nd7+=) 9...Bg7 (9...Ne7 10.Nc3+=) 10.cd5 cd5 11.Nc3 f6 (11...Nf6!?+=) 12.Rc1+/– a6? (better is 12...Bd7 13.Nd7 Qd7+/–) 13.Nd5!+– Qd5 (13...Nc6 14.Nb6 Rb8 15.Nc6 bc6 16.Nc8 Rc8 17.Ba6 Rb8+–) 14.Rc8 Ke7 15.Rc7 Kd8 16.Bc4 (< 16.Rg7 fe5 17.de5 Ne7+–) 16...fe5 17.Bd5 (17.Rg7?! Qc4 18.de5 Qd3+/–) 17...Kc7 18.Qc1 Nc6 19.Bg8 Rhg8 (19...ed4 20.Bd5 Rhd8 21.Be4+–) 20.d5 (20...Rad8 21.dc6 bc6 22.Qc5+–) 1–0. Machete (2280) – RedButt (2085), ICC, 2003.

6.c4 c6 7.cd5 cd5 8.Nc3 Nc6 9.b5 Na5 10.d3 Ne7 11.g3 (11.Qa4 b6=) 11...0–0 12.Bg2 Be6 13.0–0 b6 14.Qe2 Rac8 15.Na2 Nb3 16.Rab1 d4 17.Nb4 (17.Nc1 Nc5+=) 17...Nd5 (17...Qc5 18.ed4 ed4 19.Qe4+=) 18.Nc6 (18.Nd5 Bd5 19.Rfe1 Qd7+=) 18...Nc3 (18...Nc7 19.a4+=) 19.Bc3 dc3 20.Qc2 Na5 21.Qc3 e5 becomes the focus of attention. Black creates threats along the open c–file (21.Na7 Ra8 22.Nc6 Nc6 23.bc6 Ra3 24.Rb6–/+) 21...Nc6+= 22.bc6 Rc6 23.Qb2 Rfc8 24.d4 ed4 25.Nd4 Bd4 (25...Rc4 26.Rfd1–/+) 26.ed4 (26.Qd4 Qd4 27.ed4 Rd6+=) 26...Rc2–/+ 27.Qb4 Qb4 (27...Qd7!?–/+) 28.ab4= Rd2 (28...a5 29.ba5 ba5 30.Ra1=) 29.Rfd1+= Rcc2 30.Be4 (better is 30.d5!? Bf5 31.Rd2 Rd2 32.Ra1+=) 30...Rb2–/+ 31.Rbc1 Rd1 32.Rd1 Rb4 33.Bc6 Rc4 34.Bb5 Rb4 (34...Rc8 35.d5 Rd8 36.Bc6–/+) 35.Bc6 Rc4 (35...Bf5 36.f3–/+) 36.Bb5 Rc8 37.d5 Rd8 38.Bc6 Bd7 (better is 38...Kf8!?–/+) 39.Ra1= Bc6 40.dc6 Ra8 41.c7 Kf8 42.Ra7 Rc8 ½–½. Saradjen,Janko (2205) – Zvan,Ziga (2090), SLO–ch Kranj, 1999.

6.c4 e4 7.Nd4 =.

6.c4 Bg4 7.Nc3 (7.cd5 e4 (< 7...Qd5 8.Nc3 Qe6 9.Ne4+=) 8.Bb5 c6–+) 7...e4 8.h3 Bh5 9.g4 Bg6 10.Nb5 (10.g5 Bc3 (< 10...ef3 11.gf6 Nf6 12.cd5+/–) 11.Bc3 Bh5 (11...ef3? 12.Bg7 h6 13.Bh8+–) 12.Qa4 b5 13.Qb5 Nd7+–) 10...Qe7 11.Nfd4 (11.Bf6 Nf6 12.g5 A) < 12...ef3 13.gf6 gf6 14.cd5+/– (< 14.Qf3 c6=+); B) 12...Ng8=+) 11...c6 12.Nc3 h5 (better is 12...dc4!? 13.Bc4 Nd7=+) 13.cd5+= hg4 14.dc6 (14.Qg4 Bd4 15.ed4 Qd7 16.Qd7 Kd7 17.dc6 Nc6+/–) 14...bc6 (14...Nc6 15.Nc6 bc6 16.Qg4=) 15.Qg4 Bd4 16.Qc8 Qd8 17.Qd8 Kd8 18.ed4 Nf6 19.a4 (19.d3 ed3 20.0–0–0 Ng4+/–) 19...Nbd7 20.b5 c5 21.Ne2 c4 22.Nf4+/– White gets the initiative 22...Rc8 23.Ng6 fg6 24.Rg1 Ke7 25.Rg6 Kf7 26.Rg3 Nd5 27.Rc1 N7b6 28.a5 Na4 29.Ba1 Nf4 30.Rc4 Nd3 31.Bd3 ed3 32.Rc8 Rc8 33.Kd1 a6 34.b6 Rc2 35.Rd3 Ra2 36.Bc3 Nc3 37.dc3 Ra5 38.c4 Ra1 39.Kc2 Ra2 40.Kb1 Rf2 41.b7 Rf1 42.Kb2 (42...Ke7 43.b8Q+–) 1–0. Machete (2260) – RedButt (2085), ICC, 2003.

6.d4 e4 7.Ne5 Nd7 8.Nd7 Bd7 =.

6.Be2 Nc6 7.d4 A) 7...ed4 8.Nd4 Nd4 9.Bd4 Bf5 10.Nc3; B) 7...a6 8.c4 (8.de5 Ne5 9.Ne5 Be5 10.Be5; 8.Ne5 Ne5 9.de5 Be5 10.Be5; 8.0–0 ed4 9.ed4 Nge7 10.Re1) 8...ed4 9.c5 Qd7 10.ed4; C) 7...e4 8.Nfd2 Be7 9.c4 Qg6 10.Rg1.

6.Be2 Bg4 7.Nc3 c6 (7...Nd7 8.0–0 Ne7 9.h3 Bf5 10.d3) 8.0–0 (8.e4 Nd7 9.ed5 cd5 10.0–0) 8...Nd7 (8...e4 9.Nd4 Be2 10.Nce2) 9.d3 (9.b5 Ne7 10.h3) 9...Ne7 10.Rb1 (10.Nd2=) 10...b5 11.Na2 0–0 12.Nc1 (12.c4 a5+=) 12...Rfd8 (12...a5 13.ba5 Ra5 14.Nb3–/+) 13.Nb3 Ng6 14.Nfd2 Be2 15.Qe2 Ngf8 16.c4 a6 17.cd5 cd5 18.Rfc1 Rdc8 19.Qd1 Ne6 20.Rc2 Rc2 21.Qc2 Nb6 22.Rc1 Rc8 23.Qb1 Be7 24.Rc2 f5 25.Qc1 Rc2= 26.Qc2 f4 27.Na5 fe3+= 28.fe3 Bg5 29.Nf1 Na4 30.Bc1 Nd8 31.Ng3 Qh6 32.Nf5 Qe6 33.e4 Qb6 34.Kf1 Bc1 35.Qc1 Qf6 36.Kg1 Qb6 37.Kh1 de4 38.de4 Qf2 39.h3+/– Ne6 40.Qc8 Nf8 1–0. Zarko,Ivica (2035) – Heged,Vlado (2100), Velika Gorica op 4th, 2004.

4.e3 f5

5.c4 c6 6.cd5+= White terminates the opponent with strong threats 6...cd5 7.Nc3 Nc6 8.Rc1 Nf6 9.Nb5 Qb8 (9...Qe7 10.Nf3 d4 11.Qa4=) 10.Nf3+/– Bd6 (better is 10...Ke7!?+/–) 11.Nd6+– Qd6 12.b5 Ne7 13.Ne5 (13.Ne5 0–0 14.Be2+–) 1–0. Benassi,Aspasio – Willen,Anders, corr 3GMMsemi–10, 1998.

5.f4 ef4 6.Qh5 Qg6 7.Qg6 hg6 8.ef4 Nf6 9.g3 a5 10.c3 b6 11.Nf3 Bd6 12.Ne5 Be5 13.fe5 Ng4 14.c4 dc4 15.Bg2 Ra7 16.h3 Bb7 17.Kf1 Nd7 18.Bb7 Rb7 19.Kg2 Nh6 20.Nc3 c6 21.Rhe1 Ng8 22.b5 Rc7 23.bc6 Nc5 24.Nb5 Rc6 25.Nd6 Ke7 26.Nc4 Nb3 27.Ne3 Na1 28.Ra1 Ke6 29.Bd4 Ne7 30.Rb1 Rb8 31.Rb5 Rd8 32.Bc3 Nd5 33.Nd5 Rd5 34.Rd5 Kd5 35.Kf3 g5 36.h4 gh4 37.gh4 Rc4 38.h5 Rh4 39.Bb2 Rh5 40.Kf4 g6 41.d4 Ke6 42.Ke3 Rh3 43.Kf4 Rh4 44.Ke3 g5 45.Ba1 Rh3 46.Ke2 Ra3 0–1. Walker,Susan – Lisowska,Anna, Dobrna, 1985.

5.c4 Nf6

6.Nf3 Nbd7 7.Nc3 =.

6.Nf3 e4 7.Ne5 (7.Nd4!? a6 8.Nc3+/–) 7...Nbd7= 8.c5 Qe7 (8...Qe6 9.f4=) 9.f4 Ne5 10.Be5 c6 11.Be2 Be6 (11...Ng4 12.Bg4 Qh4 13.Kf1 Qg4 14.Qg4 fg4 15.Nc3=) 12.h3 (12.0–0!?+=) 12...0–0–0?? (better is 12...Nd7 13.Bd4 Qh4 14.Kf1 Be7+=) 13.Qa4+– (13.Qa4 Kd7 14.Qa7+–) 1–0. residencialfil (2510) – justforfun (2510), net–chess.com, 2015.

5.Nf3 Nd7

6.c4 c6 7.cd5 Qd5 8.Nc3 Qd6 +=.

6.c4 Ngf6 7.Nc3 c6 8.cd5 Nd5 9.Qc2 e4 10.Nd4 Ne5 11.f4 ef3 12.Nf3 Nf3 13.gf3 Be7 14.0–0–0 Be6 15.e4 Nb6 (better is 15...fe4!? 16.fe4 Nb6+=) 16.ef5+= Bc4 (16...Bd7 17.Ne4 Qf4 18.Bg7+–) 17.Bc4 (17.Ne4 Qd5 18.f6 gf6 19.Bf6+/–) 17...Nc4+= 18.Ne4 Qd5 19.f6 Nb2 (19...gf6!? 20.Nf6 Bf6 21.Bf6 Na3+/–) 20.Qb2 (20.Kb2?! gf6 21.Qc5 Kf7 22.Qd5 cd5=) 20...Qc4 21.Kb1 (better is 21.Qc3!? Qc3 22.dc3 gf6 23.Rhe1+–) 21...gf6= 22.Nf6 Bf6 23.Qf6 Qb3 24.Qb2 Qd3 25.Ka1 0–0–0 26.Qc3 Rhf8 27.Rc1 (27.Rdf1!?+=) 27...Rf3–/+ 28.Rhe1 Rf2 29.b5 (better is 29.Qd3!? Rd3 30.Re8 Kc7 31.Re7 Kb6 32.Rg1 Ra3 33.Kb1–+) 29...Qd2–+ 30.Qb3 Qd4 31.Kb1 Qd3 32.Qd3 Rd3 33.bc6 Rb3 34.Ka1 Ra3 35.Kb1 bc6 36.Rc6 Kb7 37.Rh6 Rb3 38.Ka1 Ra3 39.Kb1 Rb3 40.Ka1 Rf7 41.Rb1 Rb6 42.Rbb6 ab6 43.Kb2 Ka6 44.Rh5 b5 45.Kb3 Ka5 46.Rh3 ½–½. Ravasz,Laszlo Jr – Hidegh,Gabor (2130), HUN–chT2 Maroczy, 2004.

6.c4 Ngf6 7.cd5 Nd5 8.Nc3 =.

5.Nf3 e4

6.Nd4 Nf6 7.Nb5 Qe7 8.Bf6 gf6 9.Qh5 (9.N1c3 c6 10.Qh5 Kd8+=) 9...Kd8 10.Nd4 Rg8 11.f4 (11.Nc3 Qd7+=) 11...Qd7 (11...a5 12.b5+=) 12.g3+= c5 13.bc5 Bc5 14.Nb3 Bb6 (14...Bf8 15.d3=) 15.Nc3 Nc6 16.Na4 Bc7 17.Bb5 Qg7 18.c4 dc4 19.Bc4 Rf8 20.Nac5 Qg6 21.Qe2 Ke7 22.d4+= ed3 23.Qd3 Rd8 24.Qc3 Qh5 25.0–0 Bb6 26.Rac1 Rd6 27.Na4 Bc7 28.Nd4 Nd4 29.ed4+– Kf8 30.Rfe1 Bd8 31.Qb4 Be7 32.Re7! Ke7 33.Re1 Kd7 34.Nc5 (34.Nc5 Kc6 35.Nb7 Bb7 36.Rc1+–) 1–0. Plock,Joerg – Wall,Bill, corr, 2006.

6.Nd4+= Nf6 7.c4 c6 8.Qc2 Be7 (8...a5 9.cd5 ab4 10.dc6 Nc6 11.ab4 Nb4 12.Qc4+=) 9.Nc3 (9.cd5 Qd5 10.Bc4 Qd6+=) 9...0–0 (9...a5 10.cd5 ab4 11.Ncb5+/–) 10.cd5 Bd7 (10...a6 11.dc6 Nc6 12.Nce2+=) 11.dc6+/– Nc6 12.Ndb5 Qb8 13.Ne2 (13.d3 a6 14.Nd4 Nd4 15.ed4 Qd8+=) 13...a6 14.Nbd4 Nd4 (14...Rc8 15.Qb3 Kh8 16.Nc6 bc6 17.d3+=) 15.Nd4+/– (worse is 15.ed4 Qd6=) 15...Qd6 16.Be2 Rac8 17.Qb3 Kh8 18.h3 (18.d3!?+/–) 18...f4+= 19.Rd1 Nd5 20.Bc4 (better is 20.Bg4=) 20...Rc4?? (better is 20...Nb6 21.Ne6 Rc4 (worse is 21...Nc4 22.Bg7 Kg8 23.Bf8 Be6 24.Be7 Qe7 25.ef4=) 22.Bg7 Kg8 23.Bf8 Qe6 (worse is 23...Be6 24.Be7 Qe7 25.ef4+=) 24.Be7 Ba4–/+) 21.Qc4+/– fe3 22.0–0?? (22.de3 Ne3 23.fe3 Qg3 24.Kd2 Qg2 25.Qe2+–) 22...ef2–+ 23.Rf2 Rf2 24.Kf2 Qg6?? (better is 24...Nf4 25.d3 Bh4 26.Kf1 A) 26...ed3? 27.Qf7 Ng2 28.Nf5 (28.Kg2 Qg3 29.Kh1 Qh3 30.Kg1 Qg4 31.Kh1 Qd1 32.Kh2 Qd2 33.Kg1 Qe1 34.Kh2 Be7–+; 28.Rd3?! Nf4+=) 28...Ne3 29.Ne3+–; B) 26...Ng2–+) 25.Qd5+– Bh4 (25...Bd6 26.Re1 Bg3 27.Ke2 Be8+–) 26.Ke3 (better is 26.Kf1 Qg3 27.Kg1 Bh3 28.Qe4+–) 26...Qg3+= 27.Nf3 Qf2 28.Kf4 Bg3 29.Kg5 Threatening mate: Qxd7 29...h6 30.Kg6 The mate threat is Bxg7 30...Be8 31.Kf5 White threatens strongly Qe6 31...Kh7?? (31...ef3 32.Bg7 Kg7 33.Qb7 Bf7 34.Qf3 Bg6 35.Ke6 Qb6 36.Kd5 Qb5 37.Kd4 Bf2 38.Qf2 Qb6 39.Kc3 Qf2–+) 32.Qd4 (32.Qd4 g6 33.Ke6 Qd4 34.Nd4+–; better is 32.Qb7 Be5 33.Be5 Qg2 34.Ke4 Bh5+–) 1–0. Sternik,Ryszard – Neugebauer, Olsztyn, 1965.

4.e3 Bf5

5.Bb5 c6 6.Be2 Qg6 7.d3 Qg2 8.Bf3 Qg6 9.Be5 Nd7 10.Bc7 Bd6 11.Bd6 Qd6 12.e4 (better is 12.Ne2+=) 12...Qg6?? (better is 12...de4 13.Be4 Be6–/+) 13.ef5+– Qf5 14.Nc3 Ne7 15.Bg4 Qe5 16.Nge2 Nf6 17.f3 h5 18.Bh3 Qe3 19.Rf1 Qg5 20.Rg1 Qh4 21.Rg3 g5 22.b5 (better is 22.Qc1 g4 23.Qf4+–) 22...g4= 23.bc6 bc6 24.Qb1 gh3 25.Qb7 Rd8 26.Qa7 (26.Kd2 Rg8+=) 26...Nf5= 27.Qb7 Ng3 28.Qc6 Kf8 29.Ng3 Qf4 30.Qc5 Kg7 31.Qf2 Qe5 32.Nge2 Rhe8 33.0–0–0 d4 34.Rg1 Kf8 35.Ne4 Ne4 36.fe4 Qc5 37.Kd1 Qa3 38.Qf6 Qd6 39.Qg7+= Ke7 40.Ng3 Qb4 41.Nf5 Ke6 42.Rg3 Rh8 43.Rh3?? Rhg8–+ 44.Qh6?? Rg6 45.Ng7 Kd7 46.Qh5 Rg1 47.Ke2 Qe1 0–1. Yannick (1630) – Chess50 (2020), playchess.de, 2006.

5.d3 a5 A) 6.Nf3 Bg4 (6...Nd7 7.Nbd2 f6 8.e4 Bg4 9.c3 Ne7 10.Be2 Ng6 11.ed5 Qd5 12.Nc4+=) 7.Nbd2 (7.b5 Nd7 8.h3 Be6 9.Ng5 Bf5 10.e4 de4 11.Ne4 Be4 12.de4+=; 7.Be2 Nd7 8.Nbd2 Ngf6 9.c4 Be7 10.cd5 ab4 11.ab4 0–0 12.0–0=) 7...Nd7 8.Be2 Ngf6 9.c4 Be7 10.cd5 ab4 11.ab4 0–0 12.0–0=; B) 6.Nd2 B1) 6...f6 7.b5 (7.ba5 Nc6 8.Ngf3 Ra5 9.c4 Be6 10.Be2 dc4 11.Nc4 Bc4 12.dc4=; 7.c3 Nh6 8.e4 Be6 9.Ngf3 Qd7 10.Be2 Be7 11.0–0 0–0 12.d4=; 7.e4 Be6 8.d4 de4 9.Ne4 Qd5 10.Nc3 Qd8 11.de5 ab4 12.ab4=; 7.Ngf3 ab4 8.ab4 Ra1 9.Qa1 Qb4 10.e4 Be6 11.Be5 fe5 12.Qa8=) 7...Nd7 8.c4 Nc5 9.d4 ed4 10.Bd4 Rd8 11.Ngf3 Ne7 12.Bc5+=; B2) 6...ab4 7.ab4 Ra1 8.Qa1 f6 9.Qa8 c6 10.b5 Qc7 11.e4 Be6 12.b6=; B3) 6...Ne7 7.b5 (7.c4 c6 8.Ngf3 Nd7 9.c5 Qc7 10.Be2 ab4 11.ab4 Ra1 12.Qa1=; 7.Ngf3 f6 8.b5 Nd7 9.Be2 Nb6 10.c4 Rd8 11.e4 de4 12.de4+=; 7.e4 Bd7 8.Ngf3 Ng6 9.d4 ed4 10.Bd4 Nc6 11.Bc5 Qe6 12.Bf8=) 7...Nd7 8.Ngf3 Rd8 9.c4 e4 10.Nh4 Nc5 11.d4 Nd3 12.Bd3+=; B4) 6...Nf6 7.c4 (7.Ngf3 Nbd7 8.c4 c6 9.b5 Be7 10.Be2 0–0 11.d4 e4 12.c5+=) 7...c6 8.c5 Qc7 9.Ngf3 Nbd7 10.Be2 Be7 11.0–0 0–0 12.Qc2=.

5.d3 Nd7 6.Nf3 (6.Nd2 A) 6...0–0–0 7.Ngf3 (7.c4 d4 8.ed4 ed4 9.Ndf3 c5 10.Be2 Qf6 11.Qa4 Kb8 12.Rb1=) 7...Re8 8.Be2 Bg4 9.c4 e4 10.c5 Qe7 11.de4 de4 12.Nd4+=; B) 6...Ngf6= 7.c4 (7.Ngf3 Be7 8.c4 c6 9.Be2 0–0 10.0–0 Rfd8 11.cd5 cd5 12.Nh4=; 7.Be2 Be7 8.c4 c6 9.Ngf3 0–0 10.0–0 Rfd8 11.cd5 cd5 12.Nh4=) 7...c6 8.Ngf3 Be7 9.Qc2 a5 10.ba5 Bd8 11.cd5 cd5 12.Bc3=) 6...Ngf6 (6...a5 7.Nbd2 f6 8.e4 Be6 9.c3 ab4 10.ab4 Ra1 11.Qa1 Nb6 12.d4=; 6...Bg4 7.h3 (7.Nbd2 a5 8.Be2 Ngf6 9.c4 Be7 10.cd5 ab4 11.ab4 0–0 12.0–0=; 7.Be2 a5 8.Nbd2 Ngf6 9.c4 Be7 10.0–0 ab4 11.ab4 0–0 12.cd5=) 7...Bh5 8.Nbd2 a5 9.Be2 Ngf6 10.c4 e4 11.c5 Qe7 12.de4=; 6...Be7 7.Nbd2 Ngf6 8.c4 c6 9.Qc2 a5 10.ba5 Bd8 11.cd5 cd5 12.Bc3=) 7.Nbd2 c6 (7...Be7 8.c4 c6 9.Qc2 a5 10.ba5 Bd8 11.cd5 cd5 12.Bc3=) 8.e4 (8.c4 Be7 9.Qc2 a5 10.ba5 Bd8 11.cd5 cd5 12.Bc3=) 8...Bg6 (8...Be6 9.Be2 (9.d4 ed4 10.ed5 Bd5 11.Qe2 Kd8 12.Nd4=) 9...Be7 10.c4 0–0 11.0–0 a5 12.c5=; 8...de4 9.de4 Ne4 10.Bd3 Nd2 11.Bf5 Nf3 12.Qf3=) 9.ed5 Nd5 10.Nc4 Increases the pressure on e5 (10.Be2 Qe6 11.0–0 0–0–0 12.Ng5=) 10...Qe6 11.Ng5 (worse is 11.Nce5 f6–+ 12.c4–+; worse is 11.Nfe5 f6–+ 12.Qg4–+; worse is 11.Be5 Ne5 12.Nce5–/+ (12.Nfe5 f6–+); 11.Be2 Nf4 12.0–0=) 11...Qe7 12.Ne4 Qe6 13.h4 (13.Qf3 b5 14.Na5 Rc8=) 13...f6 (13...b5 14.Na5=) 14.h5 Bf5 15.Qf3 Be4 (15...Bg4!? 16.Qg3 0–0–0=) 16.de4+= N5b6 17.Qb3 (17.Nb6 Nb6 18.Rd1 Bd6+=) 17...Bd6 (17...Qg4 18.f3 Qe6 19.Rd1+=) 18.Nd6 (18.h6 g6+/–) 18...Qd6+= 19.Rh3 0–0–0 20.Rd3 Qe7 21.Be2 Rhe8 22.Bg4 (22.Rad1 g6+=) 22...Kc7 (22...g6 23.Rad1+=) 23.a4+/– Nc8 (23...Kb8 24.a5 Na8 25.Ba3+/–) 24.0–0–0 (24.Ba3 g6+/–) 24...Nf8 25.b5 Rd3 26.Rd3 c5 27.Ba3 b6 (27...Kb8 28.Qd5 Nb6 29.Qc5 Qc5 30.Bc5 Na4 31.Bd6 Ka8 32.Rf3+–) 28.Qd5+– Kb8 29.Qc6 g6 (29...f5 30.Bf5 g6 31.hg6 hg6 32.Bh3+–) 30.a5! f5 (30...ba5 31.Bc5 Deflection) 31.ef5 Qg5 (31...e4 32.f6 Qc7 33.Qe8 ed3+–) 32.Kb1 e4 (32...Re7 33.ab6 ab6+–) 33.Qe8 (33.Qe8 Qe7 34.Qe7 Ne7 35.Rd8 Kc7 36.Rf8 gf5 37.Bf5 Nf5 38.Rf5 ba5 39.Bc5+–) 1–0. Poley,Vladimir (2380) – Terrieux,Kevin (2235), Masters, Saint Lo FRA, 2003.

5.d4 ed4 6.Bd4 c6 (6...Qg6 7.Ra2=) 7.Nf3+= b5 8.Bd3 f6?? (better is 8...Bd3 9.cd3 a5 10.ba5 Nf6+=) 9.Bf5+– g6 10.Bd3 Bg7 11.Nbd2 Kf7 (11...a5 12.e4+–) 12.0–0 f5 (12...a5 13.e4+–) 13.Bg7 (better is 13.Ng5 Kf8 14.Bc5 Qc5 15.bc5+–) 13...Kg7 14.Nb3 Na6 15.Nh4 (15.c3 Nf6+–) 15...Nh6 16.h3 Rae8 17.Nd4 c5 (17...Re7 18.Qd2 Rf8 19.Qc3+–) 18.bc5 Nc5 19.Bf5! Nf5 (19...gf5 20.Ndf5 Double attack; 19...Nf5 20.Ndf5 Double attack) 20.Nhf5 gf5 21.Nf5 Kf6 22.Nd6 Re6 23.Qd4 Ke7 24.Nf5 Kd7 25.Qh8 Ne4 26.Qh7 Kc6 27.Nd4 Kd6 28.Ne6 Ke6 29.Qg6 Nf6 30.Rab1 a6 31.a4 ba4 32.Rb6 Ke7 33.Qf6 Kd7 34.Qf7 Kc8 35.Rh6 (35.Rh6 d4 36.Rh8; 35.Rb7 d4 36.Qd7) 1–0. Fournier,Frederic (1785) – puntorojo, Active (5/0), 2005.

5.d4 e4 6.c4 c6 7.Nc3 Nf6 8.c5 Qc7 9.f4 h5 10.Qd2 h4 11.Nge2 Be7 12.h3 Nh5 13.b5 g5 14.a4 gf4 15.Nf4 Nf4 16.ef4 Nd7 17.a5 a6 18.b6 Qc8 19.0–0–0 Nf6 20.Qe3 Nh5 21.Ne2 Rg8 22.Bc3 Ng3 23.Rg1 Qe6 24.Be1 (better is 24.Kb2!?–+) 24...Nf1 25.Rf1 Rg2 26.Rg1 Bh3 27.Rg2 (27.Rd2 0–0–0–+) 27...Bg2 28.Qf2 Bf3 29.Rd2 Bg4 30.Qh2 Kd7 (30...Qf6!? 31.Bf2–+) 31.Bh4 Qh6 32.Qg3 Qh4 (32...Bh4?! 33.Qg4 Ke7 34.Ng3 Bg3 35.Qg3–/+) 0–1. Ioannides,Milton (2075) – Jones,William EG (2030), BCF–chT3, 2009.

5.Ne2 Nf6 6.d4 e4 7.Nd2 Be7 8.Ng3 Bg6 9.c4 c6 10.cd5 cd5 11.f3 ef3 12.Bb5 Nbd7 13.Qf3 0–0 14.Nf5 Qe6 15.Ne7 Qe7 16.0–0 Nb6 17.Qf4 a6 18.Be2 Rac8 19.Rfc1 Na4 20.Rc8 Rc8 21.Bc1 h5 22.Bf3 Rc3 23.Nf1 Bd3 24.Bd2 Rc2 25.Bd1 Nb2 26.Bc2 Bc2 27.Ra2 Nd3 28.Qb8 1–0. Bonetti,Shane – Drahacik (2210), ICC, 2002.

5.c4 c6

6.cd5 cd5 7.Nf3 Nd7 8.Qa4 f6 9.d4 e4 10.Nfd2 Be6 11.Nc3 a6 12.Rc1 Rc8 13.b5 ab5 14.Bb5 Ne7 15.Qb3 Nc6 16.Be2 Na5 17.Qb5 Qb6? (better is 17...b6+=) 18.Nd5+– Rc1 19.Bc1 Qb5 20.Nc7 (20.Bb5? Bd5 21.f3 f5–+) 20...Kf7 21.Bb5 Bd6 (21...Bf5 22.Nd5+–) 22.Ne6 Ke6 23.Ne4 Be7 24.Bd2 Nc6 (24...Ra8 25.Ke2 f5 26.Ng3+–) 25.Bc4 Kf5 26.h4 h5 27.g4! Ke4?? (27...Kg4 28.f3 Mate attack; 27...hg4 28.Ng3 Combination) 28.f3! Kf3 (28...Kf3 29.0–0 Mate attack) 29.0–0 Kg4 (29...Kg3 30.Be1 Kh3 31.Rf4 Nd4 32.Bf1) 30.Rf4 Kg3 31.Be1 Kh3 32.Bf1 1–0. pcmvr – alencro (2620), net–chess.com, 2016.

6.cd5 cd5 7.Nf3 f6 8.Nc3 a6 9.Be2 Nh6 10.d4 Nf7 (better is 10...e4!? 11.Nd2 Nc6=) 11.de5+/– Ne5 12.Ne5 fe5 13.Qd5 Nc6 14.0–0 Be6 (14...Rd8 15.Qf3 Qg6 16.Rad1+/–) 15.Qe4 g6 (15...Qd2 16.Rab1 Rc8 17.Rfd1+–) 16.Rfd1 Qc7 17.Nd5 Qf7 (17...Bd5 18.Rd5 Bg7+–) 18.Be5 Ne5 (18...Bd5 19.Rd5 Qe7+–) 19.Qe5 Bg7 20.Nc7 (20...Qc7 21.Qc7 Ba1 22.Qb7+–) 1–0. Subedei – arturo, ChessWorld.net, 2005.

6.Nf3 Nd7 7.Qb3 f6 8.Nc3 Be6 (8...d4 9.ed4 ed4 10.Na4+=) 9.d4 e4 10.Nd2 a6 11.c5 Qc7 (better is 11...Qe7!?+=) 12.Nde4!+/– Be7 (12...de4 13.Qe6 Double attack) 13.a4 f5 14.Ng3 Ngf6 15.b5 0–0 16.Qc2 f4 17.Nf5 Bf5 18.Qf5 fe3 19.Qe6 Rf7 20.fe3 ab5 21.ab5 Ra1 22.Ba1 Qa5 23.Bb2 Qb4 24.bc6 bc6 (worse is 24...Qb2 25.Nd5 Qb1 26.Kd2 Ne4 27.Qe4 Qe4 28.c7–+) 25.Qc6 (25.Ba1 Ne4 26.Kd1 Nc3 27.Bc3 Qc3 28.Qg4–+) 25...Qb2 26.Nd5 Qc1 27.Ke2 Ne4 (27...Qc2 28.Ke1 Qb1 29.Ke2 Qa2 30.Kd3 Nd5 31.Ke4–+) 28.Ne7 Re7 29.Qa8 Kf7 30.Qd5 (30.Qa2 Kg6 31.Qa5–+) 30...Kg6 31.Qc6 (31.Kf3 Ng5 32.Qg5 Kg5 33.h4 Kf6 34.e4 Qc3 35.Kf4 Qd4 36.Rh3 Re4 37.Kg3–+) 31...Ndf6 32.Kf3 (32.Qe4 Ne4 33.Kf3 Ng5 34.Ke2 Qc2 35.Ke1 Re3 36.Be2 Qe2) 32...Qd1 (32...Ng5 33.Ke2 Qc2 34.Ke1 Re3 35.Be2 Qe2) 33.Be2–+ Ng5 (33...Qh1 34.Qf6 Kf6 35.Bd3 Qd1 36.Be2 Qe1 37.Bd3 Qf2 38.Kg4 Qg2 39.Kh4 g5 40.Kh5 Qh3) 34.Kf2 Qd2 (34...Qd2 35.Re1 Qe3 36.Kf1 Kh6–+) 0–1. Leonov,Vladislav (2165) – Shanava,Temur, RUS–chB U16 Dagomys, 2009.

5.c4 Nf6

6.Nc3 dc4 7.Bc4 c6 8.Qb3 Bg6 9.Nf3 Nbd7 10.d4 ed4 11.Nd4 Be7 12.Rd1 White prepares the advance b5 12...Qc7 13.Nf3 0–0 14.0–0 a5 15.b5 Nc5 16.Qa2 a4 17.Ne2 cb5 18.Bb5 Bc2 (better is 18...Rac8!?=) 19.Be5+/– Qb6 20.Qc2 Qb5 21.Ned4 Qa5 22.Nf5 Bd8 23.Bd6 Nce4 24.Bf8 Kf8 25.Nd6 Nd6 26.Rd6 Be7 27.Rd3 Ne4 28.Rd7 Nf6 29.Rd3 b5?? (29...Ne4 30.Rfd1 Qc5+–) 30.Nd4 Qb6 31.Rb1 b4 32.ab4 Bb4 33.Qc6 Qc6+/– 34.Nc6 Bc5 35.Rc3 Bd6 36.Rd1 a3 37.Rc2 g6 38.Ra2 Ne4 39.Rd3 Rc8= 40.f3 Rc6 41.fe4 Be7 42.Kf2 Rf6 43.Ke2 Re6 44.Rd4 Bf6 45.Kd3 Bd4+= 46.ed4 Ra6 47.e5 Ra4 48.Ke4 Ke7 49.Kd5 Kd7 50.Kc5 Ra8 51.d5 Ra5 52.Kc4 h5 53.g3 Ra4 54.Kb5 Re4 55.Ra3+= Re5 56.Kc5 Re7 57.Ra7+/– Kd8 58.Re7 Ke7 59.Kc6 Kd8 60.Kd6 g5 61.h3 f5 62.Ke5 f4 63.gf4 g4 64.hg4 hg4 65.Ke4 Ke7 66.f5 (66.f5+–) 1–0. Kalanyos,Ferenc (2000) – Peregi,Zsolt (2075), HUN–chT2 Asztalos, 2007.

6.d4 Nbd7 7.de5 Ne5 8.cd5 Nd5 9.Nf3 =.

5.Nf3 Nd7

6.Nc3 a6 =.

6.Nc3 c6 7.Be2 Ngf6 8.0–0 Be7 9.Nh4 Be6 10.f4 Ne4 (10...d4!? 11.Nb1 ef4 12.ef4 c5=+) 11.Ne4+= de4 12.fe5 Ne5 13.Nf5 Bf5 14.Rf5 Bf6 15.Bd4 (15.Rf4 Qd5+=) 15...Nd7 (15...0–0–0 16.c3=) 16.c3 (16.Bf6 Nf6 17.d4 ed3 18.Bd3 0–0–0=) 16...Qe6 (16...Bd4 17.ed4 0–0 18.Qf1=) 17.Bg4 (better is 17.Qf1+=) 17...Qc4? (better is 17...Bd4 18.ed4 Qg6+=) 18.Rf4+– White gets the initiative 18...Qd5 (18...0–0–0 19.Bf6 gf6 20.Bf5+–) 19.Bd7 (19.c4 Qg5 20.Bd7 Kd7 21.Bf6 gf6 22.Re4 Kc8+–) 19...Kd7 20.Qg4 Qe6 (20...Kc7 21.Re4 Rae8 22.Re8 Re8 23.Rf1+–) 21.Re4 (21.Bf6!? gf6 22.Re4 Qg4 23.Rg4+–) 21...Qg4+/– 22.Rg4 Bd4 23.Rd4 Ke6 24.Rf1 f6 25.Rff4 Rad8 26.Rfe4 Kf7 27.Kf2 Rd5 28.c4 Rd4 29.Rd4 Ke6 30.c5 Rc8 31.Kf3 Ra8 32.Kf4 Rc8 33.e4 Rc7 34.Rd8 Ke7 35.Rg8 Kf7 36.Rd8?? Re7?? 37.d4+– Rc7 38.d5 cd5 39.ed5 b6 40.c6 Ke7 41.Rh8 Kd6 42.Rd8?? Ke7 43.Rb8 Kd6 44.Rb7 Rb7 45.cb7 Kc7 46.Kf5 Kb7 47.Ke6 Kc7 48.Ke7 (48...Kb7 49.d6+–) 1–0. Bott,Hans Joachim – Rahner,Fritz, Baden–ch JS Karlsruhe, 2003.

6.c4 Bb1 7.Rb1 Ngf6 8.c5 Qe6 9.Qa4 c6 10.Be2 Be7 11.0–0 0–0 12.Qc2 h6 13.Bd3?? (better is 13.d3=) 13...e4–+ 14.Nd4 ed3 15.Qd3 Qe4 16.Qe2 Ne5 17.f4 Nc4 (better is 17...Ned7!?–+) 18.d3–/+ Qe3 19.Qe3 Ne3 20.Rfe1 (20.Rf3!? Nfg4 21.h3=+) 20...Nfg4–/+ 21.h3 Bf6 22.hg4 (22.Nf3!? Nc2 23.Re2–/+) 22...Bd4–+ (22...Ng4?! 23.Nf5=) 23.Bd4 Nc2 (23...Ng4?! 24.Re7 b5 25.Bc3=) 24.Be5 Ne1 25.Re1 Rfe8 26.Rf1 f6 27.Bd4 Re2 28.g5 hg5 29.fg5 fg5 30.Rf5 Rf8 31.Rg5 Rf7 32.a4 Rd2 33.Rg3 Rd1 34.Kh2 a6 (34...Rb1 35.Bc3 d4 36.Bd4 Rb4 37.Be5–+) 35.b5 (better is 35.Be5–+) 35...ab5 36.ab5 cb5 37.Be5 (37.Bc3 b4 38.Bb4 d4–+) 37...b4 (37...Rf5 38.Rg7 Kf8 39.Bb2 Rd3 40.Rh7–+) 38.d4 Rb1 39.Rg6 b3 40.Rb6 b2 41.Kg3 Kf8 42.Rb3 Ke8 43.Bb8 Rf6 (43...Kd8!? 44.Be5–+) 44.Rb7 Ra6 45.Bf4? (45.Bd6 g6–+) 45...Ra3 (45...Rg6 46.Kf2 Rf6 47.Kg3–+) 46.Kf2? (46.Kg4 Ra2 47.Rb8 Kf7 48.Rb7 Kg6 49.Rb6 Kh7 50.c6–+) 46...Rc3 (better is 46...Ra2!? 47.Be5–+) 47.Rb8 Kd7 48.Rb7 Ke6 49.Rb6 (49.Bd2 Rc2 50.Ke2–+) 49...Kf5 50.Bd2 (50.Be5 Rc2 51.Kg3 g5–+) 50...Rc2 51.Ke3 Rd1 52.g4 0–1. Otte,Marco – Neuteboom,Jan Hendrik, Wag.Intcomp Wageningen, 2000.

6.c4 dc4 7.Bc4 Ngf6 (7...Nh6 8.Nc3 c6 9.d4+=) 8.Qb3+= Be6 (8...Qe7 9.d4 e4 10.Ng5=) 9.Be6 fe6 10.0–0 (10.Nc3 Be7+=) 10...h6 (10...e4 11.Nd4 Qd5 12.Qc2+=) 11.Nc3 (11.d3 e4 12.de4 Ne4+/–) 11...0–0–0 (11...e4 12.Nd4+/–) 12.e4 (12...Kb8 13.Rac1+/–; 12.Rfc1 Kb8+/–) 1–0. Husslein – Fischer,M, corr SOK–87–16, 1988.

6.c4 Ngf6 7.Nc3 e4 8.Nd4 +=.

6.d3 Ngf6 7.Nbd2 c6 (7...0–0–0 8.c4=+) 8.c4 h6 (8...Be7 9.d4 e4 10.c5=+) 9.h3 (9.d4 e4 10.Ne5 Be7=) 9...Be7 10.Be2 (10.d4 e4 11.Ne5 0–0=+) 10...0–0 11.Qc2 Bh7 12.Rd1 a5 13.c5 Qc7 14.Ba1 ab4=+ 15.ab4 Rfb8 16.Qc3 b6 17.d4 bc5 18.dc5=+ d4 19.ed4 Nd5 20.Qc1 Nb4 21.0–0 Na2 22.Qc4= Rb4 (23.d5 Rc4 24.Nc4 cd5 25.Nce5 Ne5 26.Be5 Qc5–+) 0–1. Vasconcellos,A – Vescovi,Giovanni (2430), Americana BRA, 1994.

6.d4 e4 7.Nfd2 Ngf6 8.c4 c6 9.Nc3 a6 (9...Be7 10.Be2=) 10.Qb3 (10.Be2 Be7=) 10...Be7 11.cd5 (11.Be2 0–0=) 11...cd5 12.b5 (12.Rc1 0–0=) 12...0–0+= 13.h3 (13.a4 Qe6+=) 13...Rfc8 14.Be2 Be6 (14...Rc7 15.a4 Qb4 16.0–0+=) 15.0–0 Nf8 (15...Bd8 16.Qb4 Qb4 17.ab4 ab5 18.Nb5+= (worse is 18.Bb5 Be7–/+)) 16.Rfc1= Ng6 (16...Bd8 17.Rc2=) 17.Na4 (17.a4 ab5 18.Qb5 Qd7=) 17...Nd7 (17...Bd7 18.ba6 ba6 19.Rc8 Rc8 20.Nc5=) 18.Rc8 Rc8 19.ba6 ba6 20.Qb7 Rc6 (20...Nb8 21.Nc5=) 21.Nb3 (21.Rc1 Rc1 22.Bc1 Ngf8+=) 21...Nb6 22.Nac5 (22.Qa6? Na4 23.Qa4 Rc2–+) 22...Bc8 23.Qa7 Increasing the pressure on the isolated pawn on a6 23...Nc4 (23...Qf6 24.Rc1= (24.Na6?? Rc2 25.Nc1 Rb2–+; 24.Ba6 Bc5 25.dc5 Qb2–+)) 24.Bc4+= dc4 25.Na5 (25.Ne4 Qd8 26.Nbc5 f5+=) 25...Rc7 26.Qa8 (26.Qb8 Qd8 27.Ne4+=) 26...Qb6 (26...f5!?+=) 27.Nc4+/– Qb5 (27...Qc6 28.Qc6 Rc6 29.Rc1+/–) 28.Rc1 Nf8 (28...Bc5 29.dc5 Qc5 30.Nd2+/–) 29.Qe4 (better is 29.a4!? Qc6 30.Qc6 Rc6 31.Ne4+–) 29...Bc5+/– 30.dc5 Ne6 (30...Rc5 31.Kh2 Bf5 32.Qf3+/–) 31.Bd4 (31.Qa8 Qc5 32.Be5 Rd7+/–) 31...Nc5 32.Qf4?? (32.Qh4 Ne6 33.Bb6=) 32...Ne6= 33.Qc7 Nc7 34.Nd6 Qd7 35.Nc8 Qc8 36.Be5 (36.Bb6 Qd7 37.Bc7 Qd2+=) 36...f6 (36...Qd8 37.Bc7 Qd2+=) 37.Rc7 (37.Bc7!? Kf7 38.Rc3+=) 37...Qd8–/+ 38.Bg3 (38.Bf4 Qd3–/+) 38...h5 (38...Qd3 39.a4–/+) 39.Rb7 (better is 39.Rc3+=) 39...Qc8?? (better is 39...Qd3–/+) 40.Rb8+– Qb8 41.Bb8 Kf7 (41...f5 42.g4! hg4 43.hg4+–) 42.Kf1 (42.e4 h4+–) 42...Ke6 43.Ke2 1–0. Lukovski,Lev (2105) – Carl,Werner (1850), Wch Seniors Bad Wildbad, 1997.

6.d4 e4 7.Ne5 Ne5 8.de5 Qc6 =.

6.Be2 Be7 7.0–0 (7.c4 Ngf6=) 7...Qg6 (7...Ngf6 8.Nh4 Be6 9.f4 ef4 10.Rf4=) 8.Ne5 (8.Be5 Bc2 9.Qc1 Bf6 (worse is 9...Ne5 10.Ne5 Qf6 11.Bb5 Kd8 12.Nf7 Qf7 13.Qc2+/–) 10.Bf6 A) 10...Qf6?? 11.Qc2 Qa1 12.Nc3 (12.Qc7?! Qf6+–) 12...Qa3 13.Nb5 Qb4 14.Nc7 Kd8 15.Na8+–; B) worse is 10...Ndf6 11.d3+–; C) 10...Ngf6+=) 8...Ne5= 9.Be5 Bc2 (9...Be4 10.Bg3 Bc2 11.Qc1=) 10.Qc1 a6 (10...c6!?=) 11.Nc3+/– c6 (better is 11...Bf6 12.Bc7 Bd3 13.Bd3 Qd3+/–) 12.Bd1 (better is 12.Bg7!? Qg7 13.Qc2+/–) 12...Bd3 (12...Bf5 13.Ne2=) 13.Re1 (13.Ne2 Bf6 14.Bf6 Qf6= (worse is 14...gf6 15.Nf4 Qf5 16.Re1+/–)) 13...Nf6 (13...Bf6 14.Bf6 Nf6 15.Ne2 Be2 16.Be2=) 14.Ne2 Be4 (14...Qf5 15.Bb2=) 15.Nf4 Qg5 16.Qc3 Ng4? (better is 16...0–0=) 17.Nh3?? (better is 17.Bg4 Qg4 18.d3+/– (18.Bg7? Rg8–+)) 17...Qe5–/+ The mate threat is Qxh2 18.Bg4 Qc3 19.dc3 Bf6 20.Rac1 0–0 (20...h5 21.Be2–/+) 21.Nf4 a5 (21...h6+=) 22.Ne2 (22.f3 Bg6 23.e4 ab4 24.ab4 de4 25.Ng6 hg6 26.fe4+=) 22...ab4–/+ 23.ab4 Ra3 24.Nd4 Rfa8 25.f3 (25.Red1 Ra2–/+) 25...Bd3 (better is 25...Bg6–/+) 26.e4? (better is 26.Red1!? Bc4 27.Bf5–/+) 26...de4 (26...Rc3 27.Nf5 Rc1 28.Rc1 de4 29.fe4 Be4 30.Nd6–+) 27.fe4 Bd4?? (better is 27...Rc3! 28.Nf5 Rc1 29.Rc1 Be4–+) 28.cd4+= Rb3 (28...R8a4 29.d5+=) 29.d5 (29.Re3 Ra2 30.d5 Kf8=) ½–½. Campe,Ulrich – Soos,Stefan, Berlin Eckbauer op, 1999.

6.Be2 Ngf6 7.d4 e4 8.Ne5 =.

6.c4 c6

7.cd5 cd5 8.Bb5 f6 9.Nc3 a6 10.Ba4 b5 11.Bb3 Ne7 12.d3 Nb6 13.0–0 g6 (13...Bg4 14.Rc1=) 14.e4+= Be6 (14...d4 15.ef5 dc3 16.Bc3+=) 15.d4+/– Nc4 (15...Bg7 16.ed5 Ned5 17.de5 fe5 18.Ne4+/–) 16.Bc4 (16.de5 Ne5 17.Ne5 fe5 18.ed5 Bf5+–) 16...bc4 (16...dc4!? 17.de5 Qd1 18.Rad1 fe5+=) 17.Nd5 Bg7?? (better is 17...Nd5 18.de5 Qc6+–) 18.de5 fe5 (18...Qd8 19.ef6 Nd5 20.fg7 Rg8 21.ed5 c3 22.Bc3 Qd5+–) 19.Nf6!! (19...Bf6 20.Qd6+–) 1–0. AndyAndyO – arturo, ChessWorld.net, 2005.

7.cd5 cd5 8.Nc3 a6 9.Rc1 Be7 10.Be2 d4 11.ed4 ed4 12.Na4 d3 13.Bg7 Bf6 (13...de2!? 14.Qb3 Bf6 15.Qe3 Ne7 16.Bh8 Bh8 17.Qe2 Kf8+=) 14.Bh8+= Bh8 15.Nh4 de2 16.Qe2 Be6 17.0–0 Ne7 18.Nc5 Nc5 19.Rc5 Rc8 (19...Bb2 20.Qf3 A) 20...Qd2? 21.Rd1 (21.Qb7 Bd5 22.Qc7 Ba3–/+) 21...Qh6 22.Qb7+–; B) 20...Rd8=) 20.Rc8+= Bc8 21.d3 Bd7 22.Qe4 f5 23.Qb7 Qd3 24.Qb8 Bc8 25.Nf3 (25.Re1 Kf7 26.Nf3 Qa3 27.Ng5 Kg6 28.Qd6 Bf6+/–) 25...Qd5 (25...Qa3 26.Re1 Qc3 27.Re3 Qc1 28.Re1=) 26.a4 Qb7 27.Qd6 (27.Qf4!?+=) 27...Bc3= 28.b5 ab5 29.ab5 Qb5 30.Qh6 Ba6 (30...Qe2 31.Rb1+=) 31.Qh5 Ng6 32.Rd1 Qe2 33.Rb1 (better is 33.Rc1 Bd4 34.Qh7 Bf2 35.Kh1=) 33...Bb2?? (better is 33...Bd3 34.Rb8 Kd7–/+) 34.Qh7 (better is 34.Re1 Qe1 35.Ne1+–) 34...Ne7?? (better is 34...Ne5 35.Nd4 Qe4 36.Qg8 Kd7 37.Qe6 Kc7 38.Qe7 Kc8 39.Qf8 Kd7 40.Qf5 Qf5 41.Nf5 Bc3+–) 35.Re1 1–0. Wister,Finn A – Forfang,Asmund, Molde, 2004.

7.cd5 Qd5 8.Nc3 Qd6 +=.

7.Be2 dc4 8.Bc4 Ngf6 9.d4 =.

7.Be2 Be7 8.cd5 cd5 9.Qa4 (9.Bb5 f6=) 9...Bb1 (9...f6 10.d4 Kf7 11.0–0+=) 10.Rb1+= f6 (10...Bf6 11.d4 e4 12.Ne5+/–) 11.0–0 (11.d4 e4 12.Nd2 Nh6+=) 11...Nh6 12.Bb5 (12.Rfc1 a6+=) 12...a6 13.Rfc1 Rb8 (13...Rd8 14.Bd7 Qd7 15.Qa5+=) 14.Bd7 Qd7 15.Qd7 (15.Qb3 Qe6+=) ½–½. Sundin,Tommy – Rundqvist,Patrik, Karlstad op, 1988.

5.Nf3 f6

6.c4 dc4 7.Bc4 Bd3 8.Qb3 Bc4 9.Qc4 Nd7 (9...c6 10.Nc3+= Nd7 11.d4 Qe7 12.de5 fe5 13.Rd1+=; 9...Qc6 10.Qb3 Ne7 11.0–0 Qd7 12.e4 a5 13.d4+=) 10.Nc3 (10.d4 0–0–0+= (10...c6 11.Nbd2 ed4 12.Bd4 Nh6 13.0–0+/–) 11.Nbd2 Ne7 12.de5 Ne5 13.Be5+/–) 10...Nb6 11.Qe4 0–0–0 (11...c6 12.d4 Nc4 13.de5+=) 12.Rc1 (12.d4 ed4 (12...Nc4 13.0–0–0 Re8+/–) 13.Nd4+=) 12...Qd3 13.Qd3 Rd3 14.Ke2 Rd8 (14...Rd7 15.d4+=) 15.Ne4 (15.Nb5 c6+=) 15...Ne7 16.d4 ed4 (16...Na4 17.de5 Nb2 18.Nd6 Rd6 19.ed6+=) 17.Nd4 (17.Bd4 Nbd5+/–) 17...Ned5 18.Rhd1 Re8 (18...c6 19.Nf5+/–) 19.Nc5 (19.f3 Kd7+/–) 19...Bc5 20.bc5 (20.Rc5 Nf4 21.Kf3 Ne6+/–) 20...Na4+= 21.Ba1 Nf4 22.Kf3 Ne6 23.Ne6 Re6 24.Rc4 b5 25.cb6 Nb6 26.Rg4 Re7= 27.Bc3 Rhe8 28.Bb4+= Rf7 29.Rgd4 Rd7 30.Bc5 Red8 31.Rc1 Rd4 32.Bd4 Rd5 33.h4 ½–½. Lebel,Patrick (2185) – Fernandez Lopez,Jo (2095), 38th Olympiad, Dresden GER, 2008.

6.d4 e4 7.Nfd2 Nh6 (7...a5 8.b5=) 8.c4+= c6 9.Nc3 Be7 (9...Bg4 10.Qa4 Bd7 11.Rc1+/–) 10.Rc1 a6 (10...Qd7 11.cd5 cd5 12.f3 ef3 13.Qf3+/– (worse is 13.Nf3 Ng4=)) 11.cd5+/– cd5 12.Qa4 White prepares the advance b5 12...Bd7 13.Qa5 Bc6 14.b5 Bd8 15.Qa4 Bd7 16.Qb3 Be6 17.ba6 Na6 (17...b6 18.a4 Bf7 19.Ba3+–) 18.Qb7 Rb8 19.Nb5 (19.Qa6?! Qa6 20.Ba6 Rb2+/–; 19.Ba6? Rb7 20.Bb7 Qb6 21.Nce4 Qb2–+; 19.Qg7?! Nf7 20.Nb5 Qb6+–) 19...Qb6 (19...Rb7?? 20.Nd6 Kd7 21.Nb7+– (21.Ba6?! Rb2 22.Nb7 Be7 23.Nc5 Bc5 24.Rc5 Ng4+=)) 20.Qg7 Nf7 21.Be2 (better is 21.a4+–) 21...Nc7? (21...Be7 22.Nb3 Kd7 23.Nc5 Nc5 24.dc5 Bc5+–) 22.a4 Ra8 (22...Na8 23.a5! Qa5+–) 23.Nc7 Bc7 24.Bb5 Ke7 25.Rc6 (25.Rc7!? Qc7 26.Ba3 Kd8 27.Qf6 Kc8 28.Qe6 Kb8+–) 25...Qc6 26.Bc6 Rac8 (26...Rag8 27.Ba3 Bd6 28.Bd6 Kd6 29.Qf6+–) 27.0–0 (27.Bb7 Rb8 28.Ba3 Bd6 29.Bd5 Bd5 30.Bd6 Kd6 31.Ne4 Be4 32.Qf6 Kd7 33.Qf7 Kd8+–) 27...Bd6 (27...Rhg8 28.Ba3 Bd6 29.Bd6 Kd6 30.Qh7 Kc6+–) 28.Ne4! de4 (28...Rc6 29.Qf6 Kd7 30.Nd6 Rd6 31.Ba3+–) 29.d5 (29.d5 Be5 30.Ba3 Bd6 31.de6+–; 29.Be4?! Rcg8 30.Qh8 Rh8+/–) 1–0. Dzieniszewski,Andrzej – Lipski, Jelenia Gora Poland, 1985.

6.Be2 Nd7 7.0–0 0–0–0 8.c4 c6 (better is 8...dc4!? 9.Bc4 Nb6=) 9.cd5+= cd5 10.Nc3 a6 11.Rc1 Kb8 12.Na4 g5 13.d4 e4 14.Nd2 h5 15.Nc5 (15.Bh5? g4–+) 15...Nc5 16.bc5 Qc6 17.Bh5 Ne7 18.Bg4 Qc7 19.g3 Bg4 20.Qg4 f5 (20...Bg7!?+/–) 21.Qg5+– Bh6 22.Qf6 Rdg8 23.Qe5 Qe5 24.de5 Nc6 25.h4 (better is 25.Rfd1!?+–) 25...Bg7 26.Nb3 Be5 27.Be5 Ne5 28.Na5 (better is 28.Kh1!?+=) 28...Rh4 29.c6?? (better is 29.Rfd1+=) 29...Nf3 0–1. Mario64 – De Jong,Peter, ICS game, 1998.

6.Be2 Nd7 7.0–0 0–0–0 8.d3 Ne7 (8...Nb6 9.d4 e4 10.Nfd2=) 9.Nfd2 (9.Nbd2 Nb6=) 9...h5 (9...Nb6 10.Nc3=) 10.e4 (10.c4 dc4 11.Nc4 Qe6+=) 10...Be6 (10...Bg6 11.c4 de4 12.de4=) 11.c4 (11.Bh5 g6 12.ed5 Bd5=) 11...d4 12.c5 (12.Bh5 g6 13.Be2 Bh6=) 12...Qa6 13.Nb3 (13.Bh5 A) 13...Qd3? 14.Be2 Bb3 15.Bd3 (15.Nb3?! Qe4 16.Qd3 Qh4+–) 15...Bd1 16.Rd1+–; B) 13...Qb5=) 13...Bf7 (13...Qb5 14.N1d2+=) 14.f4 Qe6 15.f5?? (better is 15.N1d2=) 15...Qb3–+ 16.Qb3 (16.Qd2 Qa4–+) 16...Bb3 17.Nd2 Bf7 18.Rac1 (18.Bc1 h4–+) 18...c6 (18...g6!? 19.fg6 Bg6 20.Rce1–+) 19.Nc4 Kc7 20.Bf3 (20.Rf2 Bc4 21.Rc4 a5–+) 20...h4 (20...g6 21.Nd6 Bg8 22.fg6 Ng6 23.Nf5–+) 21.Be2 (21.Bd1 Bg8–+) 21...Rh6 (21...b6 22.cb6 ab6 23.Rc2–+) 22.Bf3 (22.Nd6 Bg8 23.Rc2 h3–+) 22...g5 23.Rcd1 (23.Nd6 Bg8 24.Nc4 Ra8–+) 23...Bh5 (23...Bc4 24.dc4 b6 25.cb6 Nb6 26.Be2–+) 24.Nd6 (24.Bc1 Bf3 25.Rf3 b5–+) 24...Rh7 (24...b6!? 25.Bh5 Rh5 26.Ra1–+) 25.Bh5 Rh5 26.Bc1 (26.a4 b6 27.Rb1 bc5 28.bc5 Nc5–+) 26...Rh7 (26...b6 27.Bd2–+) 27.Nc4 Nc8 (27...b5 28.cb6 ab6 29.Bd2–+) 28.Rf3 (28.Bd2 h3–+) 28...g4 (28...b6 29.cb6 Ncb6 30.Nb6 ab6 31.Rf2–+) 29.Rff1 (29.Rf2 Bh6–+) 29...Be7 (29...b6 30.cb6 ab6 31.Rf2–+) 30.Nd2 (30.Rf2 b6–+) 30...Rg8 (30...b6 31.cb6 ab6 32.Kf2–+) 31.Rde1 (31.Kf2 a5!–+) 31...Bd8 (31...h3!? 32.g3–+) 32.Nb3 Rh5 33.Nd2 (33.a4 Be7–+) 33...Be7 34.Nb3 (34.Rd1 a5!–+) 34...Nf8 (34...b6 35.cb6 Ncb6 36.Bd2–+) 35.Nd2 (35.Bd2 b6–+) 35...Nh7 (35...b6 36.cb6 ab6 37.Rf2–+) 36.Nb3 Ng5 (36...b6 37.Bd2–+) 37.Nd2 (37.Re2 h3 38.Bg5 hg2 (38...fg5?! 39.f6–+) 39.Rg2 Rgg5–+ (39...fg5?! 40.Rg4 Bf6 41.Nd2–+)) 37...Bf8 (37...h3 38.g3–+) 38.Nc4 (38.Nb3 Bh6–+) 38...Rgh8 (38...b6 39.Bg5 Rhg5 40.cb6 ab6 41.Rc1–+) 39.Nd2 (39.Re2 Bh6–+) 39...Ne7 (39...h3 40.g3–+) 40.Nb3 (40.Nc4 Bh6–+) 40...Ng8 (40...Bh6 41.Kf2–+) 41.Bg5 Rg5 (41...fg5?! 42.Nd2–+) 42.Rf2 (42.Nd2 b6–+) 42...g3 43.hg3 (43.Rf3 gh2 44.Kh2 Nh6–+) 43...hg3 (43...Rg3!? 44.Rf3 Rf3 45.gf3–+) 44.Rf3 Rh2 (44...Bh6 45.Kf1–+) 45.Re2 (45.Nd2 Rh4–+) 45...Rh4 (45...Bh6 46.Nd2–+) 46.Nd2 Bh6 47.Nf1 Rhg4 48.Nd2 Rh5 (48...Rg7 49.Nf1–+) 49.Nf1 Rhg5 (49...Bf4 50.Rb2–+) 50.Nd2 Rg7 51.Nf1 Ne7 52.Nd2 (52.a4 Rf4–+) 52...Be3 53.Kf1 (53.Rfe3 de3 54.Re3 Rg8–+) 53...Rh7 (better is 53...Bf2 54.Nc4–+) 54.Ke1 (54.Ree3 de3 55.Nc4 Rh1 56.Ke2 Rb1–+) 54...Rh1 (54...Rh2!? 55.Nc4 Rh1 56.Rf1 Bf2 57.Ref2 gf2 58.Ke2–+) 55.Rf1 Rf1 (55...Rh2 56.Re3 de3 57.Nc4–+) 56.Nf1 Bf4 (56...Bf2 57.Rf2 gf2 58.Kf2 Rf4 59.Kg1–+) 57.Kd1 Rh4 58.Kc2 (58.Re1 Rh1 59.Ke2 Kd7–+) 58...Rh1 59.Nd2 Ng8 60.Nf3 Rc1 61.Kb2 Rc3 62.Ne1 Bc1 63.Ka2 Ra3 (better is 63...Ba3!? 64.Nc2 Bc1 65.Kb1–+) 64.Kb1 Rc3 65.Rc2 Rc2 (better is 65...Be3 66.Rc3 dc3 67.Kc2–+) 66.Nc2 (66.Kc2 Bf4 67.Kd1–+) 66...Bd2 67.Kb2 Nh6 68.Na3 Bb4 0–1. valpa – Abiodun, playchess.de, 2003.

6.Be2 Nd7 7.0–0 0–0–0 8.d4 Qe6 =.

4.e3 f6

5.Bb5 Bd7 6.c4 Bb5 7.cb5 Nd7 8.Nf3 (8.Ne2 Qe6=) 8...0–0–0 (8...e4 9.Nh4 Qe6 10.Qh5 Qf7 11.Qf7 Kf7 12.d3=+) 9.d3 g6 (9...e4!? 10.Nfd2 Ne5 11.Be5 Qe5=) 10.0–0 Bh6 11.e4 (11.Qc2 Ne7+=) 11...d4 (11...de4 12.de4 Qd1 13.Rd1=) 12.Nbd2 Ne7 13.Qc2 Kb8 14.Nc4 Qe6 15.a4 c6 16.Bc1 Bc1 17.Rac1 cb5 18.ab5 Rc8 19.Qa2 Nb6 (better is 19...Rce8!?+/–) 20.Ra1+– Nc4 21.Qa7 Kc7 22.dc4 Ra8 23.Ra6 Qa6?? (23...Ra7 24.Re6 Nc8 25.Rf6 Re8+–) 24.Qc5 (24...Kd7 25.ba6 Ra6 26.Qb5 Kc8 27.Ne5 fe5 28.Qe5+–; 24.ba6?? Ra7 25.ab7 Rb7–+) 1–0. pcmvr – Grimshaw, internet, 2005.

5.c4 Be6 6.c5 Qd7 7.Nf3 (7.d4 e4=) 7...Bg4 (7...Ne7 8.d4 e4 9.Nfd2=) 8.Be2 (8.h3 Be6=) 8...Nc6 (8...a5 9.d4 e4 10.Ng1 Be2 11.Ne2 ab4 12.Nf4=) 9.0–0 (9.h3 Be6=) 9...a6 (9...e4 10.Nd4 Be2 11.Qe2=) 10.d3 Nh6 11.Nbd2 (11.Nc3 Kf7+=) 11...Be7 12.Re1 0–0 13.Nf1 Nf7 (13...b6 14.Qc2=) 14.Ng3 f5 15.h3 f4 16.Nf1 Bh5 17.Ne5! Nfe5 (17...Nce5 18.Bh5) 18.Bh5 f3 19.Nh2 fg2 20.Bg4 Ng4 21.Qg4 Qg4 22.Ng4 Bh4 (22...h5!? 23.Nh2 a5+=) 23.Re2+= (< 23.Kg2 h5 24.Re2 hg4 25.hg4 Rae8–+) 23...Rae8 24.Kg2 h5 25.Nh2 Re6 26.Rg1 d4 27.e4 (27.Nf1!?+=) 27...Ref6 28.Rf1 Rg6 29.Kh1 Rgf6 30.Kg2 (30.f4!? Rf4 31.Rf4 Rf4 32.Kg2+=) 30...Rg6 31.Kh1 Kh7 (better is 31...Rgf6=) 32.f4+/– Rg3 33.Rf3 Rf3 34.Nf3 Rf4 35.Nh4 (better is 35.Nd4 Nd4 36.Bd4+/–) 35...Rh4=+ 36.Kg2 Rf4 37.e5 Kg6 38.Kg3 Rf5 39.e6 Ne7 (better is 39...Rf8!?+=) 40.Bd4+– Rd5 41.Re4?? (better is 41.Be5 Rd3 42.Kf4+/–) 41...Rd4!–+ (42.Rd4 Nf5 43.Kf4 Nd4–+) 0–1. Dzuris,I – Garancovsky,Pavol (2050), Tatran–Bardejov Slovakia, 1999.

5.c4 Ne7 6.Nf3 Bg4 7.h3 Bh5 8.c5 Qe6 (8...Qd8 9.Be2=) 9.Be2 (9.Ng5 fg5 10.Qh5 Qg6 11.Qg6 Ng6+/– (11...hg6? 12.Be5 Kd8 13.Nc3+–)) 9...Bf7 10.Nc3 c6 11.Qb3 Ng6 12.Rc1 Be7 13.b5 0–0 Black launches an attack 14.d4 e4 15.Nd2 f5 16.Bh5 f4 (16...Nd7 17.0–0=) 17.Bg6 (17.bc6 Qc6 18.Nf1=) 17...Qg6–/+ 18.0–0 (better is 18.bc6!? Nc6 A) 19.Qb7?? fe3 (19...Qg2?! 20.Rf1 fe3 21.Qc6 ed2 22.Kd2–+) 20.fe3 Qg2–+; B) 19.0–0–/+) 18...f3–+ Threatening mate... how? 19.g3? (19.g4 h5 20.Kh2 hg4 21.Rg1–+) 19...Qh5 20.Kh2 (20.Ne2 fe2 21.Rfe1 Qh3 22.bc6 bc6 23.Re2–+) 20...Be6 21.h4 Qg4 (21...Qg4 22.Nf3 Qh3 23.Kg1 ef3 24.bc6 Qg2) 0–1. Liepert,Luise – Horther Schneider,Elsbeth, Bayern–ch (Women), 1987.

5.d4 ed4 6.Bd4 Nc6 7.Bc5 (7.Nf3!?=) 7...Qe5+= 8.Bf8 Kf8 (8...Qa1 9.Bg7 Nge7 10.Bh8+–) 9.Nd2 Nge7 10.Ngf3 Qc3 11.Be2 a5 12.b5 Ne5 13.0–0 Bf5 14.Ne5 fe5 15.Qe1 Ng6 (15...Bc2 16.Rc1 d4 17.ed4 ed4 18.Bd1+–; worse is 15...Qc2 16.Rc1 Qb2 17.Rc7 Qa3 18.Rb7+/–) 16.Bh5 Ke7 (16...Qc2 17.Rc1 Qb2 18.Rc7 Qb5 19.Nf3+–) 17.e4 de4 18.Ne4 Qe1 19.Rfe1 Rad8 20.Ng3 Kf6 21.Bf3 Bc8 (worse is 21...Bc2 22.Rac1 Rd2 23.Nf1+–) 22.Ne4 Ke7 23.Re3 Bd7 24.Rc3 c6 25.Rb1 cb5 26.Rc7 Rc8 27.Rb7 Rc2 28.Rd1 Rd8 29.h3 Nf4 30.Bg4 Ne6 31.Rd5 Rc7 32.Rb6 Rc1 33.Kh2 Nc7 34.Re5 Kf8 35.Bd7 Rd7 36.Nc5 Re7 37.Rb8 Kf7 38.Rf5 Kg6 39.g4 h6 40.Rh8 Re8 41.Re8 Ne8 42.Nd7 Kh7 43.Rb5 Rc2 44.Kg2 Nd6 45.Ra5 Ne4 46.Rf5 Ra2 47.Rf4 Nc3 48.Rf3 Ra3 49.h4 Nb5 50.Ra3 Na3 51.Kf3 Kg6 52.Ke4 Kf7 53.f4 Nb1 54.Ne5 Ke6 55.f5 Ke7 56.Ng6 Kf6 57.Kf4 Nd2 58.g5 hg5 59.hg5 Kf7 60.Ne5 Ke7 61.Nc6 Kf7 62.g6 Kg8 63.Nd4 Nc4 64.Ne6 Nb6 65.Kf3 Nd5 66.Ke4 Nf6 67.Kf4 Nd7 68.Ke4 Nf6 69.Ke5 ½–½. wilfried (2310) – marekt (2215), gameknot.com, 2014.

5.Bb5 c6

6.Be2 b5 7.d4 =.

6.Be2 Be6 7.Nf3 Nd7 8.0–0 Be7 9.Nc3 Nh6 10.b5 0–0 11.bc6 bc6 12.a4 Qc7 13.Rb1 Bd6 14.Kh1 Nc5 (14...Rab8 15.Kg1=+) 15.d4= White launches an attack 15...Nd7 16.e4 ed4 (16...Bb4 17.Na2 a5 18.Nc3=) 17.Nd4+= Bf7 18.ed5 cd5 (18...Bd5 19.Nd5 cd5 20.Ne6+–) 19.Ndb5 (19.Ncb5 Qc5+/–) 19...Qc6 20.Bf3 Nb6 21.a5 Nc4 22.Bc1 (22.Bd5 Bd5 23.Qd5 Qd5 24.Nd5 Rfd8+/–) 22...Ne5 (better is 22...Nf5!?+=) 23.Bh6+– (23.Nd5 Nf3 24.Nf6 gf6 25.Bh6 Nh4 26.Qg4 Ng6 27.Nd6 Qd6 28.Bf8 Rf8+/–) 23...Nf3 24.Qf3 (< 24.gf3 gh6 25.Nd6 Qd6 26.Rg1 Kh8+=) 24...gh6 25.Qf6 Rad8 26.Na7 Qd7 (26...Qc4 27.Nab5 Bb4 28.a6+–) 27.Nab5 Be6 28.Qh6 Bf4 29.Qh4 Rf5 (29...d4 30.Ne2 Be5 31.Qg5 Qg7 32.Qg7 Kg7 33.f4+–) 30.Nd4 (30...Rdf8 31.Nf5 Rf5 32.a6+–) 1–0. Kuperski,Marek – Hoffmann,Piotr, corr 1. AMM Poland, 1991.

6.Be2 Ne7 7.Nf3 (7.d4 Nd7=) 7...Nd7 (7...a5 8.b5=) 8.0–0 (8.d4 e4 9.Nfd2 b5=) 8...g6 (8...a5 9.b5=) 9.c4 Bg7 (9...dc4 10.Bc4 Nb6 11.Be2=) 10.Nc3 0–0 11.Qb3 Kh8 (11...f5 12.d4+=) 12.Rac1 (12.cd5 Nd5 13.d4 N7b6+=) 12...e4 (12...a5 13.cd5 Nd5 14.ba5 Ra5 15.d4+=) 13.Nd4 a6 (13...f5 14.cd5 Nd5 15.Nd5 Qd5 16.Bc4+=) 14.c5+/– Qc7? (better is 14...Qe5+/–) 15.Ne6+– (15...Nc5 16.Nc5+–) 1–0. pcmvr (2770) – cruyce (2665), net–chess.com, 2006.

5.c4 c6

6.Nc3 Bd7 7.Qb3 A) 7...Na6 8.cd5 (8.Nf3 Ne7 9.Be2 0–0–0 10.0–0 Nc7 11.h3 Kb8 12.d4 e4 13.Nd2; 8.Be2 Ne7 9.Nf3 0–0–0 10.c5 Qc7 11.0–0 e4 12.Nd4 Nf5 13.d3; 8.Rc1 Ne7 9.Nf3 Nc7 10.Bd3 e4 11.c5 Qe6 12.Nd4 Qg4 13.Bf1) 8...cd5 9.Nd5 Ne7 10.Ne7 Be7 11.Bc4 0–0–0 12.Nf3 Kb8 13.0–0; B) 7...a5 8.ba5 (8.c5 Qc7 9.Nf3 ab4 10.ab4 Ra1 11.Ba1 Ne7 12.Be2 Be6 13.0–0; 8.cd5 ab4 9.ab4 Qb4 10.Qd1 Ra1 11.Qa1 Ne7 12.dc6 Nbc6 13.Qa2; 8.Na4 ab4 9.c5 Qc7 10.ab4 Bf5 11.Nf3 Nd7 12.Nh4 Nh6 13.Nf5; 8.b5 Ne7 9.bc6 Bc6 10.Nb5 Qd8 11.Nf3 Na6 12.d4 e4 13.Nd2) 8...Ne7 9.Nf3 Na6 10.d4 ed4 11.ed4 Qe6 12.Kd2 Qd6 13.Re1; C) 7...Be6 8.Nf3 (8.Be2 Ne7 9.Nf3 Kf7 10.0–0 Nd7 11.d4 e4 12.Nd2 Rc8 13.Rac1; 8.Rc1 Ne7 9.Nf3 Nd7 10.Bd3 dc4 11.Bc4 Bc4 12.Qc4 Nb6 13.Qe2; 8.Bd3 Ne7 9.Nge2 e4 10.Bc2 dc4 11.Qa4 f5 12.g4 Nd7 13.gf5; 8.Nh3 Ne7 9.Be2 Nd7 10.c5 Qc7 11.0–0 Bh3 12.gh3 Nf5 13.Qd1; 8.cd5 cd5 9.Nb5 Qd7 10.Be2 Nc6 11.Rc1 a6 12.Qa4 d4 13.ed4) 8...Ne7 9.Be2 Nd7 10.0–0 Kf7 11.d4 e4 12.cd5 cd5 13.Nd2; D) 7...Ne7 8.Nf3 (8.cd5 Nd5 9.Bc4 Be6 10.Ne4 Qc7 11.Rc1 Qf7 12.b5 a6 13.bc6; 8.Be2 a5 9.ba5 Na6 10.d4 ed4 11.ed4 Nc7 12.c5 Qf4 13.g3; 8.Rc1 Be6 9.Nf3 Nd7 10.Bd3 dc4 11.Bc4 Bc4 12.Qc4 Nb6 13.Qe4; 8.h3 a5 9.ba5 Na6 10.Qb6 Qc7 11.Nf3 Qb6 12.ab6 Nc5 13.d4) 8...Be6 9.Be2 Kf7 10.0–0 Nd7 11.d4 e4 12.cd5 cd5 13.Nd2.

6.Nc3 Bd7 7.c5 A) 7...Qe7 8.Be2 (8.Nf3 Na6 9.Be2 Nh6 10.Qb3 Qe6 11.d4 e4 12.Nd2 Nc7 13.b5; 8.Bd3 a5 9.Nh3 ab4 10.ab4 Ra1 11.Qa1 Na6 12.Qa5 Qd8 13.Qa4) 8...Kf7 9.Nf3 Nh6 10.0–0 Na6 11.Nh4 g5 12.Nf3 Bg7 13.Qc2; B) 7...Qc7 8.Nf3 (8.Be2 Na6 9.Nf3 Kf7 10.0–0 Ne7 11.Qb3 Re8 12.a4 Be6 13.d4; 8.Bd3 Nh6 9.Nh3 e4 10.Be2 Bh3 11.gh3 Nd7 12.d3 ed3 13.Qd3; 8.Qb3 Ne7 9.Be2 a5 10.Nf3 ab4 11.ab4 Ra1 12.Ba1 Be6 13.0–0) 8...Ne7 9.Be2 Be6 10.0–0 Nd7 11.Qc2 g6 12.e4 Bg7 13.d4.

6.Nc3 Bd7 7.Be2 A) 7...Kf7 8.Nf3 (8.Qb3 Ne7 9.Nf3 Be6 10.0–0 Nd7 11.d4 dc4 12.Bc4 Bc4 13.Qc4; 8.Qc2 Ne7 9.Nf3 Na6 10.0–0 g6 11.Rac1 Bh6 12.Qb3 Kg7 13.cd5; 8.Qa4 Ne7 9.Nf3 Be6 10.cd5 Nd5 11.Ne4 Qd8 12.d4 Bf5 13.Ng3; 8.cd5 cd5 9.Nf3 Ne7 10.0–0 a6 11.b5 ab5 12.Qb3 Be6 13.Nb5) 8...Na6 9.0–0 Ne7 10.Qb3 Qe6 11.Rac1 Rc8 12.Bd3 Nc7 13.h4; B) 7...Na6 8.Nf3 (8.Qb3 Ne7 9.Nf3 Qe6 10.0–0 Kf7 11.cd5 cd5 12.e4 de4 13.Bc4; 8.Qc2 Kf7 9.Nf3 Ne7 10.0–0 g6 11.Qb3 Qe6 12.Na4 b5 13.cb5; 8.cd5 cd5 9.Nf3 Ne7 10.0–0 Rc8 11.Qb3 Qe6 12.Rac1 Kf7 13.Nb5) 8...Kf7 9.0–0 Ne7 10.Qb3 Qe6 11.Nh4 g5 12.Nf3 Bg7 13.h3; C) 7...Nh6 8.Nf3 (8.cd5 cd5 9.Nf3 Nf5 10.0–0 Nc6 11.Nb5 Qb8 12.Qb3 a6 13.Nc3; 8.Qb3 a5 9.ba5 Ra5 10.Qb7 Na6 11.cd5 cd5 12.Nf3 Kf7 13.d4) 8...Nf5 9.0–0 Na6 10.Qb3 e4 11.Nd4 Nc7 12.cd5 Nd4 13.ed4; D) 7...Qe6 8.d4 (8.Nf3 dc4 9.Qc2 a5 10.ba5 Ra5 11.Ne4 b5 12.d3 cd3 13.Bd3; 8.Qb3 Ne7 9.Nf3 Na6 10.0–0 Nc7 11.cd5 Ned5 12.Bc4 b5 13.Bd3; 8.Qc2 a5 9.ba5 Ra5 10.Qb3 Bd6 11.Nf3 Ne7 12.Qb6 Rc5 13.d4) 8...Ne7 9.de5 fe5 10.Nf3 a5 11.b5 dc4 12.Ng5 Qg8 13.Qd6; E) 7...Ne7 8.Nf3 (8.Qb3 a5 9.ba5 Na6 10.Qb7 Rb8 11.Qa6 Rb2 12.Nf3 Bc8 13.Qa7; 8.c5 Qc7 9.Nf3 Be6 10.Qc2 Nd7 11.0–0 g6 12.e4 Bg7 13.d4; 8.cd5 cd5 9.Nf3 Kf7 10.Qb3 Be6 11.0–0 Nbc6 12.Qa4 Nf5 13.b5) 8...Kf7 9.0–0 Na6 10.Qb3 Qe6 11.Rac1 Rc8 12.Bd3 Nc7 13.h4.

6.Nc3 Bd7 7.Nf3 A) 7...Na6 8.Be2 (8.Qb3 Ne7 9.Be2 Qe6 10.0–0 Kf7 11.Rac1 Rc8 12.Bd3 Nc7 13.h4; 8.cd5 cd5 9.Nh4 Ne7 10.Rc1 g6 11.Bb5 Bg7 12.0–0 0–0 13.Qa4; 8.Nh4 Ne7 9.Be2 0–0–0 10.c5 Qc7 11.0–0 g5 12.Nf3 Kb8 13.Qa4; 8.c5 Qc7 9.Be2 Nh6 10.d4 e4 11.Nd2 Kf7 12.b5 Nc5 13.dc5; 8.Rc1 Ne7 9.Qb3 Bf5 10.cd5 Nd5 11.d4 Nc3 12.de5 fe5 13.Bc3) 8...Kf7 9.0–0 Ne7 10.Qb3 Qe6 11.Rac1 Rc8 12.Nh4 g5 13.Nf3; B) 7...Kf7 8.Qb3 Ne7 9.cd5 cd5 10.Bd3 Be6 11.Nb5 Qd8 12.Be5 fe5 13.Ng5; C) 7...Ne7 8.Qb3 (8.Be2 Bf5 9.0–0 Nd7 10.Nh4 Be6 11.Qc2 Qc7 12.cd5 Nd5 13.Nd5; 8.cd5 cd5 9.Rc1 Nbc6 10.Qb3 a6 11.Be2 e4 12.Nd4 Nd4 13.ed4; 8.Rc1 Na6 9.cd5 Nd5 10.Bc4 Nc3 11.Rc3 Nc7 12.Rd3 Qe7 13.e4; 8.Nh4 Qe6 9.Qb3 Na6 10.Nf3 Nc7 11.Be2 0–0–0 12.0–0 Kb8 13.b5; 8.c5 Qc7 9.Be2 Be6 10.Qc2 Nd7 11.0–0 g6 12.d4 e4 13.Nd2) 8...Na6 9.Be2 0–0–0 10.0–0 Kb8 11.c5 Qe6 12.Ba6 ba6 13.Qa4.

6.Nc3 Be6 7.Qb3 Nh6 (7...Ne7 8.Nf3= (8.Be2 Nd7 9.Nf3 Kf7 10.0–0 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.Qe6) 8...Nd7 9.Be2 Kf7 10.c5 Qc7 11.0–0 b6 12.cb6 Nb6 13.Qc2; 7...Kf7 8.Nf3 (8.Be2 Ne7 9.Nf3 Nd7 10.0–0 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.Qe6; 8.Rc1 Ne7 9.Nf3 Nd7 10.Be2 a5 11.c5 Qc7 12.0–0 ab4 13.ab4; 8.h3 Nd7 9.Nf3 Ne7 10.Be2 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.d3; 8.Nh3 Ne7 9.Be2 Nd7 10.0–0 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.Qe4; 8.h4 Nd7 9.Nf3 Ne7 10.Be2 Qc7 11.d4 e4 12.Nd2 Nb6 13.cd5) 8...Ne7 9.Be2 Nd7 10.h3 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.d3; 7...a5 8.cd5 (8.ba5 Nd7 9.cd5 cd5 10.Nb5 Qb8 11.Nf3 Ne7 12.Be2 Kf7 13.0–0) 8...cd5 9.ba5 d4 10.Qa4 Nc6 11.Nb5 Qd7 12.Nf3 Kf7 13.Bc4) 8.Rc1 (8.Nf3 Be7= (8...Kf7 9.Rc1 Na6 10.cd5 cd5 11.Nb5 Qb6 12.Be2 Be7 13.Nc3) 9.Rc1 Na6 10.cd5 cd5 11.Nb5 Qd7 12.Be2 0–0 13.0–0) 8...dc4 (8...d4 9.Ne4 Qd7 (9...Qe7 10.Nf3 de3 11.fe3 Nd7 12.Bd3 0–0–0 13.0–0) 10.ed4 ed4 11.Nf3+= Nf5 12.g4 Nh6 13.Bg2; 8...Na6 9.cd5 cd5 10.Nb5 Qb6 11.Nf3 Nf5 12.Bd3 Kf7 13.Bf5) 9.Bc4 Bc4 10.Qc4 Nd7 (10...Na6 11.Nf3 0–0–0 12.d4 ed4 13.Nd4) 11.Nf3 Nb6 (11...b5 12.Qb3 (12.Qa2 a5 13.ba5) 12...a5 13.0–0+/– (13.Ne4=); 11...f5 12.e4 b5 13.Qb3) 12.Qb3 (12.Qe2 Qe6= (12...Be7 13.b5) 13.d4; 12.Qe4 Be7 13.0–0) 12...Qd3= 13.Qc2 Qc2 14.Rc2 a5 15.b5 Nc4 16.a4 Bb4 (16...Rc8 17.bc6 Rc6 18.Ke2=) 17.Ke2 (17.bc6 bc6 (worse is 17...Nb2 18.cb7 Nd3 19.Ke2+/–) 18.Ke2 Nb6=) 17...0–0 (17...Bc3 18.Bc3 cb5 19.ab5+=) 18.Na2 (18.bc6 bc6 19.Rb1 c5=) 18...Nb2 (18...cb5 19.ab5 Nb2 20.Nb4+=) 19.Rb2 c5 (19...e4 20.Ne1 c5 21.d4=) 20.Nc3 (20.d3 Rfd8=) 20...Rad8 21.h3 (21.Rc2 Bc3 22.dc3 Nf5=) 21...Nf5 22.Ne4 Nd6 23.Nd6 Rd6 24.d3 Rfd8 25.Rb3 Kf7 26.Rc1 b6 ½–½. Wohlers Armas,Friederike (2110) – Hegeler,Anja (2275), Mephisto (Women), 1990.

6.Nc3 Be6 7.c5 A) 7...Qc7 8.Nh3 (8.Bd3 Nh6 9.Nge2 Nd7 10.0–0 Be7 11.Qb3 Bf7 12.Qd1 e4 13.Bc2; 8.Nf3 Kf7 9.Be2 Nd7 10.0–0 Nh6 11.Qc2 Be7 12.h3 a5 13.Rfd1; 8.Be2 Kf7 9.Nf3 Nh6 10.0–0 Nd7 11.Qc2 Be7 12.Rfe1 a5 13.h3; 8.Qc2 Kf7 9.Nf3 Nh6 10.Be2 Nd7 11.0–0 Be7 12.h3 Rhe8 13.Nh4; 8.h3 Nd7 9.Nf3 Nh6 10.Be2 Be7 11.0–0 b6 12.d4 bc5 13.dc5) 8...Nd7 9.Bd3 Nh6 10.Qc2 Bh3 11.gh3 e4 12.Be2 Ne5 13.d3; B) 7...Qd7 8.Nf3 (8.Be2 Nh6 9.d4 ed4 10.ed4 Be7 11.Nf3 0–0 12.0–0 Na6 13.Re1; 8.Bd3 Nh6 9.Nge2 Be7 10.0–0 0–0 11.f3 Na6 12.Qc2 f5 13.Na4; 8.d4 ed4 9.Qd4 Ne7 10.Nf3 Nf5 11.Qd2 Na6 12.Bd3 Be7 13.0–0; 8.h3 Nh6 9.Nf3 Be7 10.Qc2 0–0 11.Be2 Qc7 12.0–0 Nd7 13.e4; 8.Qa4 Nh6 9.Nf3 Be7 10.Be2 d4 11.Ne4 d3 12.Bd1 0–0 13.0–0) 8...Nh6 9.d4 e4 10.Nd2 Be7 11.Be2 Nf5 12.0–0 0–0 13.Qa4; C) 7...Qe7 8.Bd3 (8.Nh3 Nd7 9.Bd3 e4 10.Be2 Bh3 11.gh3 Ne5 12.0–0 Nh6 13.d4; 8.Qc2 Nd7 9.Nf3 Qf7 10.Be2 Qg6 11.Qb3 Kf7 12.0–0 Ne7 13.Nh4; 8.Nf3 Nd7 9.Be2 Nh6 10.0–0 Nf5 11.Qc2 0–0–0 12.e4 de4 13.Ne4; 8.Be2 Nd7 9.Nf3 Nh6 10.0–0 Nf5 11.e4 de4 12.Ne4 0–0–0 13.Qc2; 8.h3 Nh6 9.Nf3 Nd7 10.Be2 Qf7 11.0–0 Be7 12.Qc2 0–0 13.Rfe1) 8...e4 9.Bc2 Nd7 10.Nge2 Ne5 11.d3 ed3 12.Bd3 Nh6 13.Nd4.

6.Nc3 Be6 7.cd5 cd5 8.d4 (8.Nf3 Nc6 9.Rc1 Nge7 10.Be2 Kf7 11.0–0 Rc8 12.Qa4 a6 13.b5; 8.Be2 Nc6 9.Rc1 Nh6 10.Qa4 Kf7 11.Nf3 Be7 12.b5 Nb8 13.0–0; 8.Rc1 Nc6 9.Nh3 Nge7 10.Bd3 e4 11.Nb5 Qb8 12.Nf4 Bf7 13.Be2; 8.Nb5 Qd7 9.Nf3 Nc6 10.Be2 Nh6 11.d4 a6 12.Nc3 e4 13.Nd2; 8.Nh3 Nc6 9.Bd3 Nh6 10.0–0 Nf5 11.Rc1 Be7 12.Na4 e4 13.Be2; 8.Qh5 Bf7 9.Qh3 Nc6 10.Rc1 Qd7 11.Nf3 Qh3 12.gh3 Nh6 13.Be2) 8...Nc6= 9.de5 fe5 10.Nf3 Nf6 11.Nb5 Qb8 12.Qc2 e4 13.Ne5.

6.Nc3 Be6 7.Nf3 A) 7...Kf7 8.cd5 (8.Nh4 Ne7 9.Be2 g5 10.Nf3 Nd7 11.Qc2 Bg7 12.0–0 Qc7 13.cd5) 8...cd5 9.Nb5 Qe7 10.Nh4 g5 11.Nf3 Nc6 12.Rc1 a6 13.Nc3; B) 7...dc4 8.d3 (8.Rc1 b5 9.d3 a5 10.ba5 Ra5 11.dc4 Qd1 12.Kd1 bc4 13.Nd2; 8.Ne4 Qd5 9.d3 a5 10.Nc3 Qd6 11.b5 Nd7 12.dc4 Nc5 13.Qc2; 8.Be2 a5 9.b5 Nd7 10.Ne4 Qd5 11.Nc3 Qd6 12.Ne4 Qd5 13.Nc3) 8...a5 9.b5 Nd7 10.dc4 Nc5 11.Qc2 Ne7 12.Be2 Qc7 13.0–0.

6.Nc3 Ne7 7.c5 A) 7...Qd8 8.Nf3 (8.Be2 Bf5 9.d4 Nd7 10.Nf3 b6 11.cb6 ab6 12.0–0 Kf7 13.e4; 8.Qb3 Nf5 9.Nf3 e4 10.Nd4 a5 11.Nce2 Kf7 12.d3 ab4 13.de4; 8.h3 Na6 9.Nf3 e4 10.Nd4 Nf5 11.Nf5 Bf5 12.d3 Qd7 13.de4) 8...Kf7 9.Be2 Be6 10.0–0 Nd7 11.Qc2 Qc7 12.Nh4 g5 13.Nf3; B) 7...Qc7 8.Be2 (8.Nf3 Be6 9.Be2 Nd7 10.0–0 g6 11.Qb3 Kf7 12.e4 b5 13.cb6) 8...Bf5 9.Nf3 Nd7 10.0–0 g5 11.Qb3 Bg7 12.d3 0–0–0 13.a4.

6.Nc3 Ne7 7.cd5 A) 7...Nd5 8.Ne4 (8.Nf3 Be6 9.Qc2 Nd7 10.Bd3 Nc3 11.dc3 0–0–0 12.Rd1 g5 13.0–0; 8.Qc2 Be6 9.Nf3 Nd7 10.Bd3 Nc3 11.dc3 0–0–0 12.Rd1 g5 13.0–0; 8.Be2 Nc3 9.Bc3 Be6 10.Nf3 Nd7 11.Qc2 Be7 12.0–0 f5 13.d4; 8.d4 ed4 9.Qd4 a5 10.b5 Nc3 11.Qc3 Qc5 12.Qb3 Qd5 13.Qd5; 8.Nge2 Be7 9.Ne4 Qe6 10.N2c3 0–0 11.Rc1 Nd7 12.h4 N7b6 13.Bd3) 8...Qc7 9.d4 ed4 10.Qd4 Be6 11.Nf3 Nd7 12.Rd1 Be7 13.Nc3; B) 7...cd5 8.Nf3 (8.Rc1 Nbc6 9.Nf3 Kf7 10.Be2 Bf5 11.0–0 Rc8 12.Nh4 Be6 13.f4; 8.Nb5 Qd8 9.Nf3 Nbc6 10.Be2 Nf5 11.Qb3 a6 12.Nc3 e4 13.Ng1; 8.Be2 Kf7 9.Nf3 Nbc6 10.0–0 a6 11.b5 ab5 12.Nb5 Qd8 13.Nh4) 8...Kf7 9.Nb5 Qd8 10.Rc1 Nbc6 11.Nh4 Be6 12.Be2 a6 13.Nc3.

6.Nc3 Ne7 7.Nf3 A) 7...Kf7 8.cd5 (8.Be2 Be6 9.Qc2 Nd7 10.0–0 Qc7 11.cd5 Nd5 12.Nd5 Bd5 13.e4; 8.c5 Qc7 9.Be2 Be6 10.0–0 Nd7 11.Qc2 Re8 12.Nh4 e4 13.f4; 8.Nh4 Be6 9.Be2 g5 10.Nf3 Nd7 11.Qc2 Bg7 12.0–0 Qc7 13.cd5; 8.Rc1 Be6 9.cd5 Nd5 10.Ne4 Qe7 11.d4 ed4 12.Nd4 Nd7 13.b5; 8.h3 Be6 9.c5 Qc7 10.Be2 Nd7 11.0–0 g6 12.Qb3 Bh6 13.a4) 8...cd5 9.Qb3 Be6 10.Be2 Nbc6 11.0–0 Nf5 12.d4 e4 13.Nd2; B) 7...Nd7 8.Be2 (8.Rc1 a5 9.ba5 Ra5 10.cd5 Nd5 11.Nd5 Rd5 12.Bc4 e4 13.Bd5; 8.Qb3 a5 9.Be2 ab4 10.ab4 Ra1 11.Ba1 e4 12.Nd4 Ne5 13.0–0; 8.cd5 Nd5 9.Qc2 a5 10.ba5 Nc5 11.d4 ed4 12.Nd4 Ne6 13.Nd5; 8.Qc2 a5 9.cd5 Nd5 10.ba5 Be7 11.Bd3 Nc5 12.Bh7 Ra5 13.0–0) 8...Qe6 9.0–0 dc4 10.Ne4 Nf5 11.Qc2 Nb6 12.Nc5 Qf7 13.d3; C) 7...Be6 8.Qc2 (8.Be2 Kf7 9.Qc2 Nd7 10.0–0 Qc7 11.cd5 Nd5 12.Nd5 Bd5 13.e4; 8.cd5 Nd5 9.Ne4 Qc7 10.Qc2 Nd7 11.Bd3 Be7 12.0–0 0–0 13.h3; 8.Qb3 Kf7 9.Be2 Nd7 10.0–0 dc4 11.Bc4 Bc4 12.Qc4 Qe6 13.Qe6; 8.Rc1 Nd7 9.Be2 a5 10.cd5 Nd5 11.Ne4 Qc7 12.b5 c5 13.d4; 8.c5 Qc7 9.Be2 Nd7 10.0–0 Nf5 11.Qb3 Kf7 12.e4 Ne7 13.ed5) 8...a5 9.cd5 Nd5 10.ba5 Ra5 11.Bd3 Nc3 12.dc3 g6 13.0–0; D) 7...Bf5 8.Nh4 (8.cd5 Nd5 9.Nh4 Nc3 10.Bc3 Be6 11.Qc2 Nd7 12.Be2 g6 13.0–0; 8.Be2 Nd7 9.Nh4 Be6 10.Qc2 Qc7 11.cd5 Nd5 12.Nd5 Bd5 13.0–0; 8.c5 Qc7 9.Be2 Nd7 10.0–0 g5 11.d4 0–0–0 12.b5 Kb8 13.a4; 8.Qb3 Nd7 9.Nh4 Be6 10.Rc1 g5 11.Nf3 a5 12.cd5 Nd5 13.Ne4; 8.h3 Nd7 9.Nh4 Be6 10.Rc1 g5 11.Nf3 Bg7 12.cd5 Nd5 13.Ne4) 8...Be6 9.c5 Qc7 10.Be2 Nd7 11.0–0 0–0–0 12.Nf3 Nf5 13.Qc2; E) 7...Na6 8.cd5 (8.Rc1 Kf7 9.cd5 cd5 10.Be2 Nc7 11.0–0 Be6 12.Na4 b6 13.Nh4; 8.Be2 Bf5 9.Nh4 Be6 10.c5 Qc7 11.0–0 Ng6 12.Bh5 0–0–0 13.Ng6) 8...Nd5 9.Ne4 Qe6 10.Qc2 Be7 11.d4 0–0 12.de5 fe5 13.Ne5.

6.Nc3 Ne7 7.Nh3 A) 7...Kf7 8.Rc1 (8.cd5 cd5 9.d4 Nbc6 10.de5 Ne5 11.Nf4 Bf5 12.Rc1 a6 13.e4; 8.Qf3 e4 9.Qd1 Qe5 10.Qb3 Bh3 11.gh3 Qe6 12.cd5 cd5 13.d3; 8.Bd3 e4 9.Bc2 Bh3 10.Qh5 g6 11.Qh3 Bg7 12.f3 ef3 13.cd5) 8...Be6 9.cd5 Nd5 10.Ne4 Qc7 11.Bd3 Nd7 12.0–0 Kg8 13.Qh5; B) 7...Na6 8.cd5 (8.Bd3 dc4 9.Bc4 Bf5 10.f3 Qd7 11.Nf2 Be6 12.Be6 Qe6 13.0–0; 8.Be2 Kf7 9.0–0 Bh3 10.gh3 Rc8 11.Qb3 f5 12.cd5 Nd5 13.f4; 8.Rc1 Be6 9.Be2 Kf7 10.0–0 Nc7 11.f4 Bh3 12.gh3 ef4 13.Rf4; 8.c5 Qc7 9.Be2 Kf7 10.0–0 Ng6 11.d4 Nh4 12.e4 Bh3 13.gh3) 8...Nd5 9.Ne4 Qc7 10.d4 Bf5 11.Qf3 g6 12.de5 fe5 13.g4; C) 7...Bf5 8.cd5 (8.Be2 Nd7 9.c5 Qc7 10.0–0 0–0–0 11.d4 Kb8 12.b5 g5 13.bc6; 8.Qf3 Nd7 9.cd5 cd5 10.Nb5 Qb6 11.Rc1 Rd8 12.Nc7 Kf7 13.Nd5; 8.g4 Be6 9.c5 Qd7 10.f3 h5 11.Nf2 hg4 12.fg4 e4 13.Qa4; 8.c5 Qe6 9.Qb3 Nd7 10.e4 Bh3 11.gh3 f5 12.ed5 Nd5 13.Nd5; 8.d4 Nd7 9.c5 Qe6 10.Be2 Bh3 11.gh3 Kf7 12.0–0 Nf5 13.Bg4) 8...cd5 9.Be2 Nbc6 10.0–0 Kf7 11.g4 Be6 12.f4 Kg8 13.Nb5.

6.Nc3 Kf7 7.Rc1 Na6 (7...Be6 8.cd5 Bd5 9.Nd5 cd5 10.Nf3 Ne7 11.Be2 Nbc6 12.0–0 Nf5 13.b5) 8.cd5 cd5 9.Nb5 Qd8 10.d4 e4 11.Nh3 Ne7 12.Nf4 g5 13.Nh5.

6.c5 Qc7 7.d4 e4 8.Nh3 (8.Be2 Ne7=) 8...g6 (8...Nh6 9.Nf4+=) 9.Nf4 Bh6 10.Qd2 Ne7 (10...Bf4 11.ef4 Ne7 12.Be2+=) 11.Be2 Bf4 12.ef4 h5 13.h3 Nf5 14.0–0 Nd7 15.Nc3 (15.Re1 Nf8=) 15...Nf8= 16.Bd1 Ne6 17.Ne2 Kf7 (17...b6 18.cb6 ab6 19.a4=) 18.Bb3+= Bd7 (18...b6 19.a4+=) 19.a4 Rag8 20.Kh1 g5 21.fg5 Rg5 ½–½. BlackPanther – AlexSh, playchess.de, 2004.

6.d4+= e4 7.Nd2 Ne7 8.f3 (8.cd5 cd5 9.Rc1 Nbc6+=) 8...ef3 9.Ngf3 Bg4 10.Qc2 Bf5 (10...Nd7 11.Be2=) 11.Bd3+= Bd3 12.Qd3 Nd7 (12...f5 13.0–0+=) 13.c5 (13.e4 dc4 14.Nc4 Qe6+/–) 13...Qe6+= 14.0–0–0 (14.0–0!?+=) 14...0–0–0 15.Rhe1 f5 16.g3 (16.Qb3 Nf6+=) 16...Nf6 17.Ng5 Qg8 18.Ngf3 Ne4 19.Rf1 g6 20.a4 (20.Qb3 Bg7+=) 20...Bh6 21.Rde1 Qe6 22.Nb3 Kb8 23.Kc2 Nf6 (23...Bg7–/+) 24.h3 (24.b5 Rhe8–/+) 24...Nd7 (better is 24...Ne4!?–+) 25.Re2 Rhe8 26.Rfe1 (26.b5 Nf6–/+) 26...Ng8 (26...Nf6 27.b5–/+) 27.Bc1 (27.b5 Ka8+=) 27...Ngf6 28.Nh2 (28.b5 Ka8–/+) 28...Ne4–+ 29.Nf1 Rf8 (29...Ndf6 30.b5–+) 30.Nbd2 Ndf6 31.Nf3 (31.b5 Ng5–/+) 31...Nh5 Black intends f4 32.Rg2 g5 33.Ng1 Rd7 34.Ne2 Rdf7 Black prepares the advance f4 35.Nd2 f4 (35...Nhf6 36.b5–/+) 36.ef4 Qh3 (36...gf4 37.gf4 Nf4 38.Nf4 Bf4 39.Ne4 de4 40.Re4 Qa2 41.Bb2 Qa4 42.Qb3 Qb3 43.Kb3=) 37.Rgg1 (37.Reg1 Re7 38.Nf3 gf4 39.Rh2+=) 37...Nd2 (37...Nf2!? 38.Qf3 Qf5 39.Kc3 Ng4–/+) 38.Bd2= gf4 (38...Qg4!?=) 39.Rh1+= Qg4 40.gf4 (better is 40.Rh4!? Qg6 41.g4 Qd3 42.Kd3+=) 40...Nf4+= 41.Bf4 Bf4 42.Nf4 (42.b5 Qg6+=) 42...Rf4–/+ 43.Reg1 Rf2 44.Kb1 Qf4 45.Rh7?? (better is 45.Qg3–/+) 0–1. Jurczyk – Schroder, BSW–tt Sbr–Hmb, 1987.

6.cd5 cd5 7.Nf3 e4 8.Nd4 Nc6 9.Bb5 a6 10.Bc6 bc6 11.0–0 Nh6 12.d3 f5 (12...Ng4!? 13.g3 ed3 14.Qd3 a5+=) 13.de4 fe4 14.Nd2 (better is 14.Qh5 Nf7 15.f3 ef3 16.Qf3=) 14...g5?? (better is 14...Ng4 15.g3 Qh6+=) 15.Qh5+– Nf7 16.N4b3 (better is 16.Nc6 Rg8 17.Qh7+–) 16...h6?? (better is 16...Rg8 17.f3 ef3 18.Qf3 Be6+/–) 17.Bh8+– Bf5 18.Bb2 0–0–0 (18...Qg6 19.Qd1+–) 19.f3 (19.Qf7!? Qd7 20.Qf6 Qe6+–) 19...ef3 (19...Bg6 20.Qg4 Qd7 21.Qd7 Kd7 22.fe4+–) 20.Nf3 (better is 20.Qf7 Qd7 21.Qf6 Qe6 22.Rf3 Qf6 23.Bf6 Bg4 24.Bd8 Bf3 25.Nf3 Kd8+–) 20...Qe6 (20...Qg6 21.Qg6 Bg6 22.Nfd4+–) 21.Nfd4 (21.Nfd4 Qg6 22.Qf3+– (22.Nf5?! Qh5 23.Rac1 Kd7+=)) 1–0. Fournier,Frederic – NN, jeu.europe–echecs.com, 2013.

5.Nf3

5.Nf3 (--> 4.Nf3 f6 5.e3).

5.Nf3 Be6 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 f6 5.e3 Be6).

4.e3 Nf6

5.Ra2 a5 6.ba5 Be7 7.Nf3 Nbd7 8.c4 0–0 =+.

5.b5 Be7 6.d4 e4 7.c4 dc4 8.Bc4 a6 =+.

5.Bb5 c6 6.Be2 Be7 7.Nf3 Nbd7 8.0–0 0–0 =+.

5.Qc1 Nbd7 6.Nf3 a5 7.Nc3 Qb6 8.Na4 Qe6 =+.

5.Bc1 a5 6.ba5 Be7 7.Bb2 0–0 8.d4 ed4 –/+.

5.c3 Be7 6.c4 Bg4 7.f3 Bd7 8.cd5 Nd5 =+.

5.Bc3 a5 6.ba5 Ne4 7.Nf3 Nc3 8.Nc3 Ra5 =+.

5.Nc3 a5 6.Nge2 ab4 7.ab4 Ra1 8.Qa1 c6 =.

5.Nc3 Nc6 6.Bb5 Bd7 7.Nf3 e4 8.Bc6 Bc6 9.Nd4 Bd7 10.Ncb5 (10.0–0 0–0–0+=) 10...Qb6–/+ 11.a4 (11.Nc3!?–/+) 11...c6 12.a5 Qd8 13.Nc3 Bb4 14.a6 Qc7 15.ab7 Qb7 16.0–0 Bd6 17.Ba3 c5 18.Rb1 Qc8 19.Ndb5 Be7 20.d4? (better is 20.Bb2–+) 20…a6 0–1. Barrow,Clyde (1705) – Goldberg,Anna (1825), internet, 2007.

5.Nc3 Be7 6.Nf3 (6.Nb5 Qd7 7.Be5 Bd8+/–) 6...0–0 (better is 6...c6!?+=) 7.Nb5+/– Qd8 8.Be5 Na6 9.c4 c6 10.Nc3 dc4 11.Bc4 Nc7 12.Qc2 a6 13.Ng5 g6 14.Bf7 Rf7 15.Qb3 (15.Nf7?! Kf7 16.0–0 a5+=) 15...Be6 16.Ne6 Ne6 17.Qe6 Qd7 (17...Qd3!?+–) 18.Qd7 Bb4?? (18...Nd7 19.Bg3 b5+–) 19.Qd4 Bc3 20.Qc3 Nd5 21.Qb3 b5 22.Rc1 Rc8 23.e4 Ne7 24.Bd6 1–0. pumpkin (2485) – macedon (2280), net–chess.com, 2013.

5.c4 a5 6.c5 (6.Nf3 e4 7.c5 Qd8=) 6...Qe7 7.Nf3 e4 8.Nd4 (8.Ne5 ab4 9.ab4 Ra1 10.Ba1 Nbd7 11.Nd7 Bd7=) 8...Bd7 (8...ab4 9.ab4 Ra1 10.Ba1=) 9.Nc3 Nc6 10.Nc6 bc6 (10...Bc6 11.d4=) 11.Be2+= Qe6 (11...Rb8 12.Qa4+=) 12.d3 Be7 (12...ed3 13.Qd3 Rb8 14.Qd4+=) 13.0–0 (13.de4 de4 14.0–0 0–0+=) 13...0–0 (13...Rb8 14.Na2+=) 14.de4 de4 15.Qd4 Rfd8 16.Qd2 (16.Rfd1 Qf5 17.Qc4 Rdb8=) 16...Qf5 (16...Qb3 17.Rfb1=) 17.Qc2 (17.Rfd1 Qg6 18.Qe1 Rdb8=) 17...Qg6 (17...Rab8 18.Na2=) 18.Rfd1 Bh3 (18...Rab8 19.Rd4=) 19.Bf1 Rdb8 (19...Bg4 20.Rd8 Rd8 21.Ne2+=) 20.f3 (20.Rd4 Bf5+=) 20...ab4= 21.ab4 Ra1 22.Ra1 Bf5 23.Ne4 (23.fe4 Be4 24.Ne4 Qe4 25.Qe4 Ne4=) 23...Be4 24.fe4 Qe4 25.Qe4 Ne4 26.Bd4 ½–½. Fournier,Frederic – Neri,Jean, AJEC CdF, 2000.

5.c4 b6 6.d4 (6.cd5 a5=) 6...ed4 7.ed4 (7.Bd4 Nc6=) 7...c5 (7...Qe6!? 8.Be2 dc4=+) 8.bc5 (8.Qe2 Qe6 9.bc5 dc4+=) 8...bc5 (8...Qe6 9.Qe2+=) 9.Nf3 (9.Qe2 Qe6+=) 9...Nc6 (9...Qe6 10.Qe2=) 10.cd5 (10.dc5 Qe6 11.Be2 Bc5=) 10...Nd5= 11.Bc4 (11.Bb5 a6 12.dc5 Qe6 13.Kd2 Qh6 (< 13...ab5 14.Re1+/–) 14.Ke1 Nf4=+ (< 14...ab5 15.Qd5 Ra7 16.Nbd2+=)) 11...Rb8 (11...Qe6 12.Kd2 Qh6 13.Ke1=+) 12.Qe2 (12.0–0 Rb2 13.dc5 Qc5 14.Bd5 Be7=) 12...Be7 (12...Qe6!? 13.Ne5 Ne5 (13...Nd4 14.Bd4 cd4 15.Bd5 Qd5 16.Nc6 Be6 17.Nb8=) 14.de5 Nf4 15.Be6 Ne2 16.Bc8 Rb2=+ (16...Rc8?? 17.Ke2 h5 18.Nd2+–)) 13.dc5= Qc5 14.Bd5 Qd5 15.Nc3 Qa5 16.Qc4 (better is 16.0–0!?=+) 16...0–0–+ 17.Qc6 Rb2 18.0–0 Bb7 19.Qd7 Bf6 (< 19...Qc3 20.Qe7 Bf3 21.gf3–/+; 19...Ba3?! 20.Nb1 Bf3 21.Ra3–/+) 20.Na4 Rc2 21.Qb7 Ba1 22.Ra1 Qa4 23.h4 Rfc8 24.g3 Qc6 25.Qc6 R2c6 26.Kg2 f6 27.Rd1 Rc3 28.a4 R3c4 29.a5 R4c5 30.a6 R5c6 31.Rd7 Ra6 32.Nd4 g6 33.h5 Ra1 34.Ne6 gh5 35.Rg7 Kh8 36.Rf7 a5 37.Nf4 Ra8 38.Nh5 Kg8 39.Rf6? a4 40.Rc6 a3 41.Rc7 a2 42.Nf6 Kf8 43.Nh7 Ke8 (44.Rc2 Rg1 45.Kg1 a1Q 46.Kg2 Qd1 47.Nf6 Kf7–+). WoodPusher83 – oldsage, ChessWorld.net, 2007.

5.c4 c5 6.bc5 Qc5 7.Be5 dc4 8.Bf6 gf6 9.Qa4 b5 10.Qc2 Bf5 11.Qc3 Be7 12.a4 Nd7 13.ab5 Qb5 14.Bc4 Qb4? (14...Qb7 15.Qd4 Be6 16.Bf1+/–) 15.Qb4 Bb4 16.Ne2 Ne5 17.Bb5 Kf8 18.Nbc3 a5 19.0–0 Kg7 20.d4 Ng6 21.e4 Bc8 22.f4 Ba6 23.f5 Ne7 24.Ba6 Ra6 25.Nd1 Rc8 26.Ne3 Bd2 27.Rf3 a4 28.Ng4 h5 29.Nf2 Rca8 30.e5 (better is 30.Rh3+–) 30...a3? (better is 30...Nd5+/–) 31.Ne4+– Bb4 32.ef6 Kf8 33.fe7 Be7 34.f6 Bb4 35.Rb3 Rb6 36.Kf2 (better is 36.Nf4 Re8 37.Ng5+–) 36...Be1 37.Ke1 (37.Re1 Rb3) 37...Rb3 38.N2c3 Rd8 39.d5 Re8 40.Kd2 Rb2 41.Kd3 Rg2 (41...Ra8 42.Ra2+–) 42.d6 (better is 42.Ra3!? Kg8+–) 42...Rh2 43.Ra3 Rh3 44.Kd4 Rf3 45.Ra5 h4 (45...Rh3+–) 46.Rh5 Kg8 47.Rh4 Rb8 (47...Ra8 48.Rg4 Kh8 49.Nd5 Ra4 50.Ke5+–) 48.d7 Rd8 49.Nd5 Rd7 50.Ke5 Rd5 51.Kd5 Rf5 52.Kd6 Ra5 53.Nc5 Ra7 54.Nd7 (54.Rg4 Kh7+–) 54...Rb7 (54...Ra6 55.Ke5 Ra5 56.Kf4 Ra4 57.Kg5 Rh4 58.Kh4 Kh7+–) 55.Ke7 Ra7 56.Rg4 Kh8 57.Rg7 (better is 57.Kf8 Kh7 58.Ne5+–) 57...Rd7= 58.Kd7 ½–½. CountFromHolland – stratum, HCL–A1574 playchess.de, 2003.

5.c4 d4 6.Nf3 Bg4 7.c5 Qd5 8.ed4 e4 9.Nc3 Qd8 10.Qe2 Qe7 11.h3 Bf3 12.gf3 ef3 13.Qe3 c6 (13...Rg8 14.0–0–0+/–) 14.Bc4+/– White prepares the advance d5 14...Na6 (better is 14...b5!? 15.Bb3 a5+/–) 15.d5+– cd5 16.Nd5 Nd5 17.Bd5 0–0–0 18.Bf3 (18.Qe7 Be7 19.Bf3 Rhe8 20.Bg4 Kb8+–) 18...Qd7+/– 19.0–0–0 Nc7 20.Be5 Ne6 (20...h5!?+/–) 21.d4+– Be7 22.Qc3 Bg5 23.Kb2 Qb5 24.d5 Nf4 (24...f6 25.Bg4 Rhe8 26.de6 h5 27.e7 hg4 28.ed8R Rd8 29.Rd8 Kd8 30.Qd4 Ke8+–) 25.Bg4 (25.Bg4 Ne6 26.de6+–) 1–0. zack1984 (1805) – ramirez_idalgo (1850), gameknot.com, 2015.

5.d3 a5 6.Nf3 Nbd7 7.b5 Be7 8.Be2 c6 =+.

5.d3 Be6 6.Nd2 Nbd7 7.c4 c6 8.Ngf3 Be7 9.Be2 0–0 10.d4 e4 11.Ne5 Ne8 12.Nb3 f6 13.Nd7 Bd7 14.cd5 cd5 15.Nc5 Bc8 16.f4 b6 17.Na4 Bd7 18.Nc3 f5 19.Qb3 Nf6 20.0–0 Kh8 21.Rac1 a6 22.Nd1 Rg8 23.Nf2 h6 24.Kh1 g5 25.g3 Rg7 26.Rg1 Rag8 27.Qc3 (27.Ba6? b5–+) 27...h5 Black intends g4 (27...b5 28.fg5 hg5 29.Qd2=) 28.Nh3 (28.fg5!? Rg5 29.Nh3+=) 28...g4= 29.Nf2 h4 30.Qc7 b5 31.Rgd1 Rh7 32.Kg2 Kg7 33.Rh1 Rgh8 34.Qd6 Bd6 35.Rc2 Kf7 36.Rhc1 Ke6 37.Kf1 hg3 38.hg3 Rh2 39.Kg1 Kf7 40.Bf1 Bf4?? 41.gf4+/– g3 42.Nh3 R2h3 43.Bh3 Rh3 44.Kg2 Rh8 45.Rh1 Rg8 46.Rh3+/– Ng4 47.Bc1 Ke7 48.Rc5 Kd6 49.Rg3 Rg7 50.Bd2 Rg8 51.Rc3 Rg7 52.Be1 Rg8 53.Kf1 Rh8 54.Kg1 Nh2 55.Rg6 Be6 56.Bg3 Nf3 57.Kg2 Nd2 58.Rg7 Bd7 59.Rg6 Be6 60.Rg7 Nc4 61.Ra7 Bc8 62.Rg7 Rh6 63.Rg8 Kc7 64.Be1 Be6 65.Rg3 Kd6 66.Rh3 Rg6 67.Kh2 Rg8 68.Bh4 Nd2 69.Bg5 Nf3 70.Kg2 Ng5 71.fg5 Rg5 72.Rg3 Rh5 73.Rg6 Rh7 74.Kg3 Rh1+= 75.Kg2 Re1?? 76.Kf2 (76.Kf2 Ra1 77.Rg7+/–) 1–0. Pieczonka,Marcin (2055) – Christensen,Bo Garner (2220), Rewal op–A, 2007.

5.d3 Be7 6.Nd2 0–0 7.Be2 Re8 8.Ngf3 Bf8 (8...Nbd7 9.d4 e4 10.Ne5=+) 9.c4= c6 10.0–0 Bg4 11.h3 Bh5 12.Nh4 (12.d4!? e4 13.c5=) 12...Be2= 13.Qe2 Nbd7 14.e4 (14.Nf5 Qe6 15.e4 Be7=) 14...Qe6 (14...dc4 15.dc4 a5 16.c5=) 15.Nf5 g6 16.Ne3 a5 (16...d4 17.Ng4=) 17.b5 (17.ed5 cd5 18.c5 b6–/+) 17...Nc5 18.d4 ed4 (18...Nce4 19.de5 Nd2 20.Qd2=) 19.ed5 cd5 20.Bd4 dc4 21.Qc4 Rad8 22.Bc5 (22.Rad1 Nfe4+=) 22...Bc5= 23.Qe6 (23.Qc5 Rd2 24.Rad1 Ne4=) 23...Re6=+ 24.Ndc4 b6 (24...Be3 25.fe3 a4 26.Rad1=) 25.Rfd1 Rde8 26.Rd3 Ne4 27.g4 (27.Rad1 Kg7=) 27...f5 (27...Be3 28.Ne3 (< 28.fe3 Rc8 29.Rc1 Nd6=+) 28...Nc5 29.Rdd1=) 28.Ra2 (28.Rad1 f4–/+) 28...fg4 29.hg4 h5 (29...Kf7 30.Rd7 R8e7 31.Re7 Be7 32.Nd5=) 30.Kg2 (30.gh5 gh5 31.Re2 Kf7=) 30...Rf8 (30...hg4 31.Re2=+) 31.f3 Ng5 32.Nd5 hg4 33.f4 0–1. Vescovi,Giovanni – Sega,Carlos Alberto, open Aruja, 1992.

5.d3 Bg4 6.Nf3 Nbd7 7.Be2 Be7 8.h3 Bf3 9.Bf3 0–0 10.Nd2 c6 11.c4 a5 12.c5 Qc7 13.0–0 Rfd8 14.Qc2 Nf8 15.g3 Ne6 16.Bg2 h6 17.Rfd1 Nd7 18.Nb3 ab4 ½–½. Valenta,Vit (2180) – Pala,Vladimir (2300), CZE–chT2e, 2006.

5.Bd3 a5 6.ba5 Nbd7 7.Bf5 g6 8.Bd7 Bd7 =+.

5.Qe2 a5 6.b5 Be7 7.d4 ed4 8.Bd4 c5 =+.

5.Be2 a5 6.ba5 Be7 7.d4 e4 8.c4 0–0 =+.

5.Be2 Nc6 6.b5 Ne7 7.Nc3 d4 8.ed4 Qd4 9.Nf3 Qd8 10.Ne5 Ng6 11.Ng6 hg6 12.Bf3 Rb8 13.Qe2 Be7 14.0–0–0 0–0 15.Rde1 Re8 16.Ne4 Ne4 17.Qe4 Bf5 18.Qe3 Qd7 19.Qa7 Bg5 20.Qa5 Red8 21.Rd1 Ra8 22.Qb4 Rab8 23.Qc3 f6 24.Rhe1 b6 25.h4 Bh6 26.g4 Be6 27.g5 fg5 28.hg5 Bg5 29.Re6 Bd2 30.Rd2 Qd2 31.Qd2 Rd2 32.Kd2 Rd8 33.Ke3 Kf7 34.Rc6 Rd7 35.Be5 Re7 36.Rc7 Ke6 37.Bg4 Ke5 38.Re7 Kd6 39.Re6 Kc5 40.Be2 Kd5 41.Rg6 Ke5 42.f4 Kd5 43.c4 Kc5 44.Rc6# 1–0. Machete99 – Saevita, ICC, 2002.

5.Be2 Bf5=+ 6.Nf3 Nbd7 7.d4 e4 8.Nfd2 c6 (8...a5 9.b5=+) 9.c4= Be7 10.cd5 (10.c5 Qe6=) 10...cd5 11.Nc3 0–0 12.Nb5 Qb6 13.Rc1 Rac8 14.0–0 Rc1 15.Bc1 (15.Qc1 Re8=) 15...Rc8=+ 16.Qb3 (16.f3 a6 17.g4 ef3 (17...ab5?! 18.gf5 Qc6 19.fe4=) 18.Rf3 Bg4–+ (18...ab5?! 19.gf5 Bd6 20.Bb2=)) 16...a6 17.Nc3 Qd6 (17...Qe6 18.f3 ef3 19.Rf3–+) 18.f3 ef3 19.Nf3 Bg4 (19...Qe6 20.Ng5 Qc6 21.e4=) 20.Bd3 Rc6 21.h3 Bh5 22.Kh1 (22.Bb2 Qe6 23.Rf2 b5=) 22...b5=+ 23.Bd2 Bf3 24.Rf3 h6 (24...Qe6 25.Bf5 Qd6 26.e4 de4 27.Be4=+) 25.Be1 (25.e4 de4 26.Be4 Rc3 27.Bc3 Ne4 28.Qf7 Kh8 29.Qe8 Kh7=) 25...Rc8 26.Qb1 (26.Bg3 Qc6 27.Ne2 Bd6=) 26...Nb6 27.Bf5 Rc4 28.Bg3 Qc6 29.Ne2 Ne4 30.Be4 de4=+ 31.Rf2 Rc2 32.Kh2 Nd5 33.Qb3 Qc4 34.Qc4 Rc4 35.Rf5? Ne3–/+ 36.Re5 Rc2 37.Re7 Re2 38.Re8 Kh7 39.Kh1 Nf5 40.Be5 f6 41.Bf4 Nd4 42.Ra8 g5 43.Bd6 f5 44.Ra6 Ra2 45.Ra5 Kg6 46.Be5 Nc2 47.Rb5 Na3 48.Rb6 Kh7 49.Rb7 Kg8 50.Rg7 Kf8 51.Rg6 Nc4 52.Bd4 Rd2 53.Bc5 Kf7 54.Rh6 f4 55.h4 Rd1 56.Kh2 e3 57.Rh7 Kf6 58.hg5 Kg5 59.Re7 Rd2 60.Kg1 Rd1?? 61.Kh2–/+ Rd2 62.Kg1–+ Rd1?? 63.Kh2= ½–½. Mephisto Mondial – KnightStalker, 1994.

5.Ne2 a5 6.b5 Be7 7.d4 e4 8.c4 dc4 =.

5.f3 Nbd7 6.c4 a5 7.Nc3 ab4 8.ab4 Ra1 =+.

5.Qf3 e4 6.Qg3 Qg3 7.hg3 Be7 8.Ne2 Bg4 =+.

5.Nf3 a5 6.Be5+/– (6.Be5 Qd8 7.Nc3+/–) 1–0. Fournier,Frederic – Drnovsek,Janez, Partie evaluee, 5m + 0s, 2007.

5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6).

5.Nf3 Bf5 6.Be5+/– Qd8 7.Nd4 Nc6 8.Bb5 Bd7 9.Bc6 bc6 10.Nc3 Bd6 11.Bd6 cd6 12.Qf3 0–0 13.0–0 Bg4 14.Qf4 (14.Nc6?! Qd7 15.Ne7 Qe7 16.Nd5 Nd5 17.Qg4 Nf6=) 14...Qd7 15.f3 Bh5 16.e4 Bg6 17.ed5 cd5 18.Rfe1 h6 19.b5 Nh5 20.Qg4 Qg4 21.fg4 Nf6 22.h3 Ne4 23.Nd5 Nd2 24.Nc6 f5 25.Re2 Ne4 (25...Nc4 26.gf5 Bf5+–) 26.Nde7 (26.Nde7 Kh7 27.Ng6 Kg6 28.gf5 Rf5 29.Re4 Rb5 30.Rd1+–) 1–0. bulent_2010 – AsceticKingK9, ChessWorld.net, 2014.

5.g3 a5 6.f4 ef4 7.gf4 ab4 8.ab4 Ra1 =+.

5.h4 a5 6.Nc3 Bg4 7.f3 Bd7 8.Qe2 ab4 –/+.

5.Nc3 a6

6.Nf3 Be7 7.Be2 (7.Ne5 Qe5 8.Nb5 Qb2 9.Nc7 Kd8 10.Na8 Nbd7=) 7...0–0+= 8.0–0 Nbd7 9.d4 e4 10.Nd2 a5 (10...Qe6 11.Na4+=) 11.ba5 Ra5 12.Nb3 (12.f3 Qb6 13.Qc1 ef3 14.Bf3 c6+=) 12...Ra8 13.a4 Qc6 14.Bb5 Qe6 15.a5 Bd6 (15...c6 16.Be2=) 16.Be2 (16.Ba3 Ba3 17.Ra3 Rd8=) 16...c6 17.Ba3 Ba3 18.Ra3 b5 19.Ra1 Nb8 20.Nc5 Qf5 (20...Qe7 21.Qd2=) 21.f3 (21.h3 Na6 22.Nb3 Qg6=) 21...Qg5 22.Qd2 (22.Qc1 ef3 23.Rf3 Re8=) 22...Bh3 (22...ef3 23.Rf3 Na6 24.Na6 Ra6 25.Qe1=) 23.Rf2= Na6 24.Na6 (24.f4 Qg6 25.N3a4 Nd7 (worse is 25...ba4 26.Na6 Bg4 27.Nc5+/–) 26.Nd7 Bd7=) 24...Ra6 25.fe4 de4 26.Kh1 Be6 27.Rf4 (27.Rf6 Qf6 (worse is 27...gf6 28.Ne4 Qg6 29.Nc5+/–) 28.Ne4 Qg6=) 27...Rfa8 28.Ne4 Ne4 29.Re4 Qd8 The isolani on a5 becomes a target 30.Kg1 Ra5 31.Ra5 Qa5 (31...Ra5 32.Qc3 Qa8 33.Bd3=) 32.Qa5 Ra5 33.Re5 (33.Bg4 Ra2 34.c3 Rc2=) 33...Kf8 ½–½. Amir,Jacob – Stefanov,Plamen (2185), IECG, 2004.

6.Nf3 Bf5 7.Bd3 Bd3 8.cd3 Be7 9.0–0 0–0 10.Qc2 Nbd7 11.Rac1 c6 12.Ne2 (12.Ng5 a5 13.b5 Rfc8–/+) 12...a5–/+ 13.Ng3 ab4 14.ab4 Qe6 15.Qb3 Ra6 16.Ra1 Rb6 Attacks the isolani on b4 17.Bc3 c5 18.Ng5 (18.Rfc1 cb4 19.Bb2 Ra6–/+) 18...Qg4 Black plans d4 19.Nf3 d4 20.Bb2 Rb4 21.Qc2 b5 (21...Rb8 22.Rfe1 Bd6 23.h3+=) 22.Ra7 Bd8 (22...Re8 23.Rfa1–/+) 23.Ba3+= de3 (23...Bb6 24.Rd7 Nd7 25.Bb4 cb4 26.Rb1+=) 24.de3 Bb6 25.Ra6 Ra4 26.h3 Qe6 27.Ra4 ba4 28.Qa4 Qa2 29.Rc1 Rb8 30.Ng5 Bd8 31.N5e4 The pressure on the isolated pawn grows 31...Nb6 32.Nf6 Bf6 33.Qa7 Ra8 34.Qb6 Qa3 35.Qc5 Qd3 36.Nh5 Qd8 37.Qc2 (37.Nf6 Qf6 38.Qc8 Qd8=) 37...Bh4 38.Qe4 g6 39.Ng3 Bg3 40.fg3 Ra5 41.g4 Kg7 42.Kh2 Qd5 43.Qd5 Rd5 44.Kg3 h6 45.Kf3 Rd6 ½–½. Ventimiglia,Charles (1760) – Lepretre,Jean Marc (1810), IECC, 1998.

5.Nc3 c6

6.Nf3 Be7 +=.

6.Nf3 Bg4 7.Be2 Nbd7 8.d4 (8.h3 Bf3 9.Bf3 Be7+=) 8...e4+= 9.Nd2 (9.Ne5 h5 (9...Ne5? 10.de5 Qe5 11.Bg4+–) 10.h3 Be2 (10...Ne5? 11.de5 Qe5 12.hg4+–) 11.Ne2 Qe6+=) 9...Bf5 (9...Be2 10.Ne2 b5 11.Ng3+=) 10.g4 (10.Na4 Qc7+=) 10...Be6 11.Na4 Be7 12.g5 Ng8 13.Ne4 de4 14.d5 cd5? (14...Bf8 15.de6 Qe6+=) 15.Bg7+/– Bg5 16.Bh8 f6 (16...Bf6 17.Bf6 Ngf6 18.Qd4+/–) 17.h4 Bh6 18.Qd4 Ne5 (18...Qc6 19.Nc3 Rc8 20.Kd2+–) 19.Nc5 0–0–0 20.c4! Nc6 (20...dc4 21.Qe4 Double attack (21.Ne4 Deflection; 21.Qe4 Decoy); 20...Nc4 21.Ne6 Combination) 21.Qb2 d4 22.Ne4 Qe5 23.Ng5! Nge7 (23...fg5 24.Be5 Pinning (24.Be5 Deflection); 23...Bg5 24.f4 Double attack (24.f4 Decoy)) 24.Nf3 (24.b5!? Bg5 25.hg5 Rh8 26.bc6 Nc6+–) 24...Qe4+/– 25.Bf6 d3 26.Be7 Ne7 27.Rd1 Bg4 28.Qf6 Nf5? (better is 28...Nc6 29.Rg1 de2 30.Rd8 Nd8 31.Rg4 Qg4 32.Qh6 Qf3 33.Qh7 Nf7+=) 29.Qd8! Kd8 30.Bd3 Qe7?? (better is 30...Qf3 31.Be2 Ke7 32.Bf3 Bf3+–) 31.Bf5 Ke8 32.Bg4 Qe4 (32...Qg7 33.Rd4 Qg6 34.Ng5 Qb1 35.Rd1+–) 33.Rg1 Qc4 (33...Qc2 34.Bd7 Ke7 35.Rg4 Qc3 36.Ke2 Qa3 37.Bc8 Qb2 38.Rd2 Qb4 39.Rd7 Ke8 40.Rb7+–) 34.Bh5 Ke7 35.Rd7! 1–0. Ventimiglia,Charles (1810) – Nowicki,Andrzej (1775), IECC, 1998.

6.h3 Be7 7.Nf3 Nbd7 8.d4 (8.Be2 0–0+=) 8...e4–/+ 9.Nd2 Bd8 10.Ne2 b5 11.Ng3 (11.a4 0–0+=) 11...g6 (11...Nb6 12.Nb3+=) 12.Nb3 (12.a4 ba4 13.b5 Qb8 14.bc6 Qb2 15.cd7 Bd7+=) 12...h5 13.Be2 h4 (13...Bc7 14.Nc5+=) 14.Nf1 Nh5 (14...0–0 15.a4=) 15.Qd2 Qf6 16.a4 (16.Nh2 Nb6=) 16...ba4 17.Ra4 Bc7 (17...Qg5 18.Qc3 Nb8 19.Rg1=) 18.Ra1 (18.Qc3 Nb6 19.Ra3 Qg5 20.Qc6 Kd8+=) 18...Qg5= 19.Rg1 (19.Bg4 Nhf6 20.Qc3=) 19...f5 (19...Nb8 20.Qc3 Bh3+=) 20.b5 (20.Qc3 Nb8+=) 20...f4 21.bc6 (21.Qc3 Nb8 22.Bh5 Rh5 23.ef4 Qf4+=) 21...Ndf6= 22.Ba3 f3 (better is 22...Rh7 23.Bh5 Nh5= (worse is 23...Rh5 24.Qb4 Nh7 25.ef4+/–)) 23.Qb4+/– Nh7? (better is 23...Kf7 24.Qe7 Kg8 25.Qf8 Kh7 26.Qf7 Ng7+–) 24.gf3+– Qf6 25.Rg6 Qf7 26.fe4 (26.Rh6 a5 27.Qc5 N5f6 28.fe4 Ne4+–) 26...N7f6 27.e5 Ne4 (27...a5 28.Qe7! Qe7 29.Be7 Ke7 30.ef6 Nf6 31.Rg7 Kd6+–) 28.f4 (better is 28.Rg8! Rg8 29.Bh5+–) 28...Rb8?? (better is 28...a5 29.Qe7 Qe7 30.Be7 Ke7 31.Bh5 Rh5 32.Rg7 Kd8+/–) 29.Bh5+– Rb4 30.Rg8!! Rg8 31.Bf7 Kf7 32.Bb4 a5 (32...Bb6 33.Bc5 Bh3 34.Bb6 ab6 35.Ra7 Ke6 36.Nbd2+–) 33.Ba5 Ba5 34.Ra5 (34.Na5?! Bh3 35.c7 Bf1 36.Kf1 h3+–) 34...Rg1 (34...Bh3 35.Ra7 (35.Rd5?! Rg2 36.Rd7 Bd7 37.cd7 Ke7+–) 35...Ke6 36.c7 Bf1 37.Kf1+–) 35.Nc5 (better is 35.Ra7 Ke8 36.Ra8+–) 35...Ng3 36.Ra7 Kg6 37.Nd7 Rf1 38.Kd2 Ne4 39.Ke2 Ng3 40.Kd3 Rd1 41.Kc3 Ne4 (41...Rb1 42.Ra8 Ne4 43.Kd3 Rd1 44.Ke2 Rd2 45.Ke1+–) 42.Kb2 Nd2 43.e6 (better is 43.Ra8 Rb1 44.Ka2 Bb7 45.cb7 Rb7+–) 43...Rb1 (43...Nc4 44.Kc3 Nd6+–) 44.Ka2 Rc1 (44...Rb6 45.e7 Kf7 46.Nb6 Bh3 47.Nd5+–) 45.f5! Kf5 46.e7 Rc2 47.Ka3 (better is 47.Ka1 Rc1 48.Kb2 Nc4 49.Kc1 Nd6+–) 47...Nc4 48.Kb4 (better is 48.Kb3 Re2 49.e8R Re3 50.Re3 Ne3 51.Ra8+–) 48...Nd6 49.Rc7 Ba6 (49...Ke6 50.Rc8! Ke7 51.Rh8 Rc4 52.Kb3 Rc6 53.Rh7 Ke6 54.Nc5 Kf6 55.Rh4+–) 50.Nc5 Bc4 (50...Rb2 51.Kc3 Rb6 52.Rd7+– (52.Na6?! Ra6 53.Rd7 Rc6 54.Kd3 Ne8+/–)) 51.e4! de4 (51...de4 52.Rd7 Combination; 51...Ne4 52.Ne4 Combination) 52.Ne4?? (52.Rd7 Ne8 53.Rd8+–) 52...Rb2?? (52...Ke4 53.Rd7 Ne8 54.Rd8–+) 53.Ka5?? (better is 53.Kc3 Rb3 54.Kc2 Ne4 55.e8Q Rc3 56.Kb2 Rb3 57.Kc1 Rc3 58.Kd1 Rd3 59.Kc2 Rc3 60.Kb1 Rb3 61.Ka1 Ra3 62.Kb2 Rb3 63.Kc2 Rc3=) 53...Ke4 54.Rd7 Rb5 55.Ka4?? (55.Ka6 Re5 56.Kb6 Nc8 57.Kc7 Re7 58.Kc8 Re8 59.Kb7+=) 55...Bb3 0–1. Magierski,Dariusz – Kahanek,Martin (1895), Ostrava Konik op–B, 2011.

5.c4 dc4

6.Bc4 Nc6 7.Qb3 Qd7 8.Nf3 =.

6.Bc4 Be7 7.Qb3 0–0 8.Nf3 Nc6 9.Ng5 Nd8 10.Nc3 Bf5 11.d4 h6?? (better is 11...ed4 12.Nb5 Qb6 13.Nd4 Bg6+=) 12.de5+– Qe5 13.Nce4 Qb2 14.Qb2 Ne4 15.Qe5 Bg5 16.Qf5 Nd6 17.Qc2 Nc6 18.0–0 a6 19.Bd5 Ne7 20.Qc7 Nd5 21.Qd6 Rfd8 22.Qc5 Nc3 (22...Rac8 23.Qa7 Rc7+–) 23.Qc3 Bf6 24.Qb3 Ba1 25.Ra1 Rac8 26.Rd1 Rd1 27.Qd1 b5 28.g3 1–0. Whaley,Michael G – Stephens,Robert, NZCCA HT corr New Zealand, 2002.

6.Bc4 Be7 7.Nf3 e4 8.Ng5 h6 9.Nf7 1–0. Morozevich,A (?) – Thanos, ICC blitz, 1999.

6.Bc4 Qc6

7.Be2 Qg2–/+ 8.Bf3 Qg5 9.Qc2 c6 (9...Bd6 10.Nc3–/+) 10.Ne2 (10.h4 Qf5 11.Qf5 Bf5 12.Be5 Nbd7 13.Bf6 Nf6= (worse is 13...gf6 14.Nc3+=)) 10...Bf5 (10...Bd6 11.d4 ed4 12.Nd4–/+) 11.d3 (11.e4 Bg4 12.Bg4 Qg4–/+) 11...Bd6 (11...Nbd7 12.Nbc3–/+) 12.Nd2+= Bg4 (12...Nbd7 13.Bc6 Rc8 14.Bd7 Bd7 15.Nc4+=) 13.Rg1 Qf5 (13...Qh5 14.Ng3 Qh4 15.Bg4 Qg4 16.Nc4+=) 14.Ng3+= Qe6 15.Bg4 (15.Bg4 Ng4 16.Ngf1=). Urgelles Paumier,A – Artega Olivera,Sergio, corr Carlos M de Cespedes, 2002.

7.Bf1 Bd6

8.Nc3 0–0 9.Rc1 a6 10.Nce2 (10.Nb5 Qb6 11.Nd6 Qd6=) 10...Qe8 11.Ng3 c6 12.e4 (12.d4 e4+=) 12...a5 13.Qb3 ab4 14.ab4 Na6 15.Bc3 Qe7 16.Rb1 Rd8 17.Nf3 Bg4 18.Be2 Nc7 19.Qb2 Ne6 (19...Bf3 20.Bf3 Qe6 21.Ra1+=) 20.h3 (20.Ne5 Be2 21.Ke2 Be5 22.Be5 Ng4+=) 20...Bf3 21.Nf5 Qd7 22.Bf3 Nf4 23.0–0 Nd3 24.Qc2 Bf8 25.Ng3 Qe6 26.Qb3 Qb3 27.Rb3 b5 28.Be2 h5 29.Bd3 Rd3 30.Re1 g6 31.Rb2 Bd6 32.f3 (32.Nh1 Nd7+=) 32...Nd7 33.Kf2 Bc7 34.Ke2 Rd6 35.Nf1 f6 36.Rc2 Nf8 37.Rb1 (37.Rec1 Ne6–/+) 37...Ne6–/+ 38.Kf2 Nf4 39.Ne3 Bb6 40.h4 Kf7 41.g3 Nd3 42.Ke2 Ke6 43.Rb3 Ra4 ½–½. Wallace,Gary – Sternik,Ryszard, b4–04–19, 2004.

8.Nc3 0–0 9.Nf3 Bg4 10.Be2 a5 (10...Rd8 11.d4 ed4 12.Qd4=) 11.b5 Qd7 (11...Qe8 12.Qc2=) 12.h3 (12.d4 ed4 13.Qd4 c5+=) 12...Bf3 (12...Bf5 13.d4 e4 14.Ne5=) 13.Bf3 c6 14.bc6 (14.d4 cb5 15.Ne4 Ne4 16.Be4 b4 17.de5 ba3 18.Ba3 Ba3 19.Ra3 Qd1 20.Kd1 Ra7=) 14...Nc6 15.0–0 Be7 16.Qe2 (16.Qb3 A) 16...Qd2?? 17.Rad1 (17.Qb7?! Rab8 18.Qc6 Rfc8=) 17...a4 18.Qb7+– (18.Rd2 ab3 19.Nb5 Rfc8–/+); B) 16...a4 17.Na4 Na5+=) 16...Rfd8 17.Rfd1 Qd3 (17...Qe6 18.Qb5=) 18.Qd3 Rd3 19.Be2 Rd7 20.Na4 (20.Nb5 e4+=) 20...Rad8= 21.d3 Nd5 22.Rac1 Rd6 (22...Bg5 23.Kh2+=) 23.Nc5+= Rg6 24.Bg4 (24.d4 ed4 25.Bd3 Bc5 26.Bg6 Ba3 (26...hg6? 27.Rc5 Nc7 28.ed4+–) 27.Ba3 hg6 28.ed4 Nf4+=) 24...Bc5 25.Rc5 Rgd6 26.Rdc1 (better is 26.Bf3+=) 26...Nb6? (better is 26...f6!?+=) 27.Be5 Ne5 28.Re5 Rd3 29.Ra5 1–0. Hombergs – Pleschke, 1996.

8.d4 e4 9.Nd2 (9.Nc3 0–0=+) 9...0–0 (9...Bg4 10.b5 Qd5 11.Bc4=+) 10.Rc1= Qd5 11.Nc4 Be7 (11...Be6 12.Nd6 Qd6 13.Ne2=) 12.Ne2 (12.Ne5 Bd6=) 12...Qe6 (12...Nbd7 13.Nf4 Qf5 14.d5=) 13.Nf4 Qd7 (13...Qf5 14.Ne5 Bd6 15.Qc2=) 14.f3 (14.Qc2 c6+=) 14...ef3 (14...c6 15.fe4 Ne4 16.Bd3+/–) 15.Qf3+= Qd8 (15...c6 16.Ne5 Qd6 17.Bd3+=) 16.Bd3 Nbd7 (16...Re8 17.0–0+=) 17.e4 Nb6 18.Nb6 (18.e5 Nfd5 19.Nb6 Nb6+/–) 18...ab6 (18...Bg4 19.Qg3 ab6 20.e5+–) 19.e5 Ng4 20.e6 (20.0–0 Bg5+/–) 20...f5 (20...Nh6 21.ef7 Nf7 22.0–0+=) 21.h3 Nf6 22.Bf5 Ne8 23.Bh7 Kh7+– 24.Qh5 Kg8 25.Ng6 Bh4 26.Kd1+/– Be6 27.Qh8 Kf7 28.Ne5 Ke7+/– 29.Qh4 Rf6 30.Rf1 Qd5 31.Rc2 Kd8 32.Re1 Bf5 33.Rf2 Kc8 34.Re3 Be6 35.Rf6 gf6 36.Qh8 Qb5 37.Ng4 Bf7 38.Qf8 Bh5 39.Ke1+– Kb8 40.Nf6 Ka7 41.Nh5 Qh5 42.g4 Qh4 43.Qf2 Qh7 44.Kd1 Qb1 45.Bc1 Rd8 46.Qb2 Qh7 47.Qd2 c6 48.Qd3 Qg7 49.Bb2 Nd6 50.Kc2 Qf7 51.Re5 Nc4 52.Rf5 Qe6 53.Rf4 b5+/– 54.Bc1 Qg8 55.Kb1+– Rd7 56.h4 Re7 57.h5 (57...Re1 58.Qc3+–) 1–0. Baer,Werner – Schulz,Hans_Juergen, TT–07 ETC, 2003.

8.Nf3 Bg4+= 9.Nc3 0–0 10.Be2 e4 (10...Rd8 11.d4 ed4 12.Qd4=) 11.Nd4= Be2 12.Qe2 Qd7 13.0–0 (13.f3 a5=) 13...Be5 14.Nd1 (14.d3 Bd4 15.ed4 ed3 16.Qd3 a5=) 14...a5 15.b5 c5 16.bc6 Nc6 (16...bc6 17.f4 Bd6 18.Nf2=) 17.Nc6 Bb2 18.Nb2 bc6 (18...Qc6 19.Rac1 Qd6 20.Nc4=) 19.h3 (19.d4 ed3 20.Nd3 Rfd8=) 19...Rfd8 Attacking the backward pawn on d2 20.Nc4 (20.Rfd1 Nd5=) 20...Qe6+= 21.f4 (21.Rac1 Rd3+=) 21...a4 22.f5 Qe7 23.Nb6 Ra5 24.Nc4 (24.Qc4 Qb7 (24...Rd2 25.Qc3 Rb5 26.Qd2 Rb6 27.Qa5+–) 25.Na4 Qa7+=) 24...Rb5 25.Rab1 (25.Qd1 Qa7+=) 25...Rdb8 (25...Rd3–/+) 26.Rb5 (26.Rbd1!?+=) 26...cb5–+ (26...Rb5?! 27.d4+=) 27.Nb2? (better is 27.Rb1!?–+) 27...Qa3 28.d3 (28.d4 Nd5 29.Nd1 b4–+) 28...Qa2 29.d4 (29.Qf2–+) 29...a3 30.Qc2 ab2 31.Rb1 Qa3 32.Qe2 (32.Qf2 Nd5 33.Rb2 b4–+ (worse is 33...Ne3 34.Re2 Nd1 35.Qf4–+)) 32...Nd5 33.Rb2 Qe3 (33...Qe3 34.Qe3 Ne3–+) 0–1. Meisinger,Peter – Nittschalk,Karl, 1. B4 Thementurnier, 2000.

8.Nf3 Bg4 9.Be2 0–0 10.0–0 Re8 11.h3 Bh5 12.d3 Nbd7 13.Nbd2 e4 (better is 13...b5!?=) 14.de4+/– Ne4 15.Ne4 Re4? (better is 15...Qe4!? 16.Nd2 Be2 17.Ne4 Bd1 18.Nd6 cd6 19.Rfd1 Nb6+=) 16.Rc1+– Qb6 17.Bd4 c5 18.bc5 Bc5? (18...Nc5 19.Bc5 Bc5+–) 19.Bc5 Nc5 20.Qc2 (better is 20.Qd5+–) 20...Bf3+= 21.Bf3 Re5 22.Rb1 Qa6 23.Qb2 Re7 24.Qb4 Rae8?? (better is 24...Rc8+=) 25.Qc5+– b6 26.Qb4 Re5 27.Rfc1 Ra5 28.Bc6 Rd8 29.a4 (29.Qe7 Rf8+–) 29...Qe2 30.Qe7 Rf8 31.Bb5 Qa2 32.Kf1 Qe6 33.Qe6 fe6 34.Ra1 Rf6 35.Ke2 a6 36.Bc4 Raf5 37.f4 g5 38.g3 gf4 39.gf4 Rh5 40.Rh1 b5 41.ab5 ab5 42.Ra5 Rc5 43.Rg1 Kf7 44.Ra7 Kf8 45.Bd3 h6 46.Bh7 Ke8 47.Rg8 Rf8 48.Ra8 Ke7 49.Rgf8 Rh5 50.Rfe8 Kd7 51.Ra7 Kd6 52.Rd8 Kc6 53.Be4 Kb6 54.Rb7 Kc5 55.Rc8 Kb4 56.Bd3 Rc5 57.Rc5 Kc5 58.Rb5 Kc6 59.Rh5 Kd6 60.Kf3 Ke7 61.Rh6 Kf7 62.Bc4 Ke7 63.Re6 Kd7 64.h4 Kd8 65.Bb5 Kc7 If Black now only could play f5... 66.Ke4 Kb7 67.Kd5 Kc7 68.Rd6 Kb7 69.Rc6 Ka7 70.Kc5 Kb7 71.Ba6 Ka7 72.Kb5 Ka8 73.Kb6 Kb8 74.h5 Ka8 75.Rc8 1–0. Hal1958 – StevenL, playchess.de, 2005.

6.Bc4 Be6

7.Qb3 Bc4 8.Qc4 Nc6 9.Nf3 =.

7.Qb3 Bc4 8.Qc4 Nbd7 9.Nf3 Be7 10.Nc3 c6 11.0–0. Fournier,Frederic (2195) – Bezrukavyi,Stanislav Adolfovich (2025), Echecsemail.com (Team), 2013.

7.Qb3 Qc6=+ 8.Be6 Qg2 9.Bf7 Kd8 10.Be5 Nbd7 11.d4 (11.Bf6 Nf6 12.Nf3 Qh1 13.Ke2 Bd6–/+) 11...Qh1 12.Kf1 Bd6 (12...Ne5 13.de5 Ng4 14.Qe6 Nh2 15.Ke2–/+) 13.Nc3 (13.Bd6 cd6 14.h3 Ne4–+) 13...Ne5 (13...Be5 14.de5 Ne5 15.Rd1 Kc8 16.Qe6 Ned7 17.Ke2=) 14.de5 Be5 15.Rd1 Bd6 16.Nb5 Qc6 (16...Qh2 17.Qe6 Re8 18.Be8 Ne8 19.Qd5+=) 17.Nd4 (17.Qc4 Rf8 18.Nd4 Qc4 19.Bc4 Kc8–/+) 17...Qe4 18.Ngf3 Kc8 (18...a5 19.Bc4 Re8 20.Ng5 Qh1 21.Ke2–/+) 19.Be6 (19.Qe6 Qe6 20.Be6 Kb8–/+) 19...Kb8 20.Bf5 (20.Qc2 a5–/+) 20...Qe8 21.Ne6 Qb5 22.Bd3 Qh5–+ 23.Be2 Re8 24.Ng7 Qh3 25.Ke1 Re7 26.Ng5? Qh2 –+. Blaszczak,Jan – Benassi,Aspasio, corr 3GMM½–10, 1997.

7.Qb3 Nd5 8.Nf3 f6 (8...Nd7 9.Nc3 c6 10.Ne4+=) 9.Nc3+= c6 10.d4 Nd7 11.de5 Ne5 12.Ne5 fe5 13.Rd1 Qc7 (13...Rd8 14.e4 b5 15.Nb5+– (15.ed5?! bc4 16.Qa4 Bd7 17.Qa7 Be7+/–; 15.Nd5?! bc4 16.Qa4 Bd7+/–)) 14.Bd5 (14.Nd5 cd5 15.Bd5 Bg4 16.Qa4 Bd7 17.Bf7 Ke7+–) 14...cd5 15.Nd5 (15...Qc6 16.b5 Bd5 17.Qd5 (17.bc6 Bb3 18.cb7 Rb8 19.Be5 Rb7–+; 17.Rd5?! Qg6+–) 17...Qd5 18.Rd5+–) 1–0. Roggensack Hanspach – Koenig, BdF, 1990.

7.Be2 a5 8.b5 +=.

7.Be2 a5+= 8.Nc3 c6 (8...Qd8 9.b5= (9.Nf3 Nbd7 10.ba5 Ra5 11.0–0 Bd6 12.Nb5 0–0 13.Bc3 Ra8 14.Nd6; 9.ba5 Ra5 10.Nf3 h6 11.0–0 Be7 12.d4 Nc6 13.Bb5 ed4 14.Nd4) 9...Nbd7 10.Nf3 Be7 11.d4 ed4 12.Nd4 0–0 13.Qc2 Ne5 14.Ne6; 8...Nc6 9.Nf3 (9.b5 Ne7 10.Nf3 Nf5 11.Qa4 0–0–0 12.d3 Kb8 13.Qa5 Be7 14.0–0) 9...e4 10.Ng5 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.Nb5 Nd5 14.Bg7; 8...Nbd7 9.Nf3 Qb6 10.0–0 Be7 11.Na4 Qd6 12.Nc5 0–0 13.Ne6 fe6 14.Qc2) 9.b5= (9.Nf3 Be7 10.Ng5 0–0 11.0–0 Nbd7 12.b5 Nc5 13.Ne6 Qe6 14.bc6) 9...Nbd7 (9...Be7 10.Nf3= 0–0 11.d4 Nbd7 12.bc6 bc6 13.de5 Ne5 14.Qd6) 10.Nf3 c5 (10...e4 11.Nd4= (11.Ng5 Nc5 12.Ne6 fe6 13.Na4 Nd3 14.Bd3) 11...Be7 12.bc6 bc6 13.0–0 0–0 14.Rb1; 10...Be7 11.bc6 bc6 12.Ng5 0–0 13.Ne6 Qe6 14.0–0) 11.0–0 (11.Ng5 Be7= 12.Bf3 Ra7 13.Ne6 Qe6 14.d3; 11.Qc2 h6 12.Nh4 Be7 13.Bf3 Ra7 14.Nf5) 11...Be7 (11...h6 12.d4 Be7 13.Ne5 Ne5 14.de5) 12.Qc2 (12.Ng5 0–0 13.Qc2 g6 14.Ne6) 12...h6 (12...Rd8 13.Ng5= 0–0 14.f4) 13.d4+= (13.Rad1 0–0 14.Nh4) 13...ed4 14.ed4 0–0 15.Rad1 Rfe8 (15...Rac8 16.dc5 Qf4 17.Nd4 Nc5 18.Rfe1+=) 16.Rfe1 (16.dc5 Qc5 17.Nd4 Bd6=) 16...Bf8 (16...Rac8 17.d5 Bg4 18.Nh4+=) 17.Na4 (17.a4 Rac8+=) 17...c4 18.Nd2 Rac8 19.Bc4 Qc7 20.Rc1 Qf4 21.g3 Qg5 22.h4 Qh5 23.Qb3 Bc4 (23...Qf5 24.Be6 Re6 25.Re6 (worse is 25.Rc8 Re1 26.Kg2 Ng4=) 25...Rc1 26.Bc1 fe6 27.Nc4+/–) 24.Nc4+/– Qf5 25.Ne3 Rc1 26.Bc1 (worse is 26.Nf5 Rce1 27.Kg2 R1e2=) 26...Qh3 (26...Qg6 27.Rd1+=) 27.Qd1 (27.Qc3 Ng4 28.Nf1 Re1 29.Qe1 b6+/–) 27...Ne4 (27...Ng4 28.Nf1 Rc8 29.Qf3+/–) 28.Qf3+/– Qe6 (28...Nd6 29.Nc3+/–) 29.d5 (29.Qf5 Qd6 30.Bb2 Ng3+=) 29...Qd6+= 30.Rd1 Ndf6 31.Bb2 Qd7 32.Qe2 Qd6 (32...Qd8 33.Qd3+=) 33.Kg2 (33.Qd3 Qd8+/–) 33...Qd8+= 34.Qd3 Nd7 (34...Bd6 35.Bd4+/–) 35.Bd4+/– Nd6 36.Nb2 (36.b6 Be7+/–) 36...Ne5 (36...Be7 37.a4+/–) 37.Be5 (37.Qb3 Qd7+/–) 37...Re5 38.Nbc4 Re8 39.a4 Qc7 (39...b6 40.h5+/–) 40.Qc2 Qd8 41.Qc3 Qc8 (41...Nc4 42.Nc4 Bb4 43.Qd3+/–) 42.Rd3 Qd7 (42...Nc4 43.Qc4 Bc5 44.d6+–) 43.Na5+– Ne4 44.Qc2 g6 (44...Bd6 45.Nac4+–) 45.Nac4 h5 (45...Bc5 46.Qe2+–) 46.Rd1 Bd6 (46...Bc5 47.b6+–) 47.Rd4 f5 (47...Nc5 48.Nd6 Qd6 49.a5+–) 48.Nd6 Qd6 (48...Nd6 49.Nc4+–) 49.Rc4 Re7 50.a5 Kf7 51.a6! ba6 52.Rc6 Qb4 (52...Qe5 53.ba6 (worse is 53.Ra6 f4 54.Qc6 fe3 55.Qg6 Kf8 56.Ra8 Re8 57.Qh6 Kg8 58.Re8 Qe8 59.Qe3 Qe5+–) 53...Kg7 54.Re6 Re6 55.de6+–) 53.ba6 Nd6 54.Kh2 (54.Rc7 Qb6 55.Re7 Ke7+–) 54...Kg7 (54...f4 55.Nc4 fg3 56.fg3+–) 55.Rc7 (55.Rc7 Ne8 56.Re7 Qe7 57.Qb2 Nf6 58.Qb8+–) 1–0. Hoch,Hubertus (2320) – Usbeck,Karl_Heinz (2210), RSX – FSO1 remoteschach.de, 2005.

7.Be2 a6 8.Nf3 A) 8...Nbd7 9.Nc3 (9.0–0 h6 10.Qc2 0–0–0 11.Nc3 Qc6 12.d4 Bd6 13.a4 Bb4 14.de5; 9.Ng5 0–0–0 10.0–0 Nb6 11.Qc2 Kb8 12.d4 ed4 13.Bd4 Qd5 14.Ne6; 9.Qc2 Be7 10.Nc3 0–0 11.Ng5 Nb6 12.Nce4 Ne4 13.Ne6 fe6 14.Qe4) 9...Be7 10.Ng5 0–0 11.Ne6 Qe6 12.Qc2 a5 13.0–0 c6 14.Ne4; B) 8...Nc6 9.Nc3 (9.Qc2 Be7 10.Nc3 Qd7 11.b5 ab5 12.Nb5 Bf5 13.Qc4 Be6 14.Qc2) 9...Qd7 10.Ng5 Be7 11.Ne6 Qe6 12.0–0 0–0–0 13.Qc2 Kb8 14.Rab1.

7.Be2 Nc6 8.Qc2 A) 8...e4 9.Nh3 (9.Nc3 0–0–0 10.Nh3 Bh3 11.gh3 Be7 12.Nb5 Qd7 13.Rc1 Kb8 14.Nd4; 9.Bf6 gf6 10.Nc3 f5 11.f3 0–0–0 12.fe4 Bg7 13.ef5 Bb3 14.Qb2) 9...a5 10.Bf6 gf6 11.Nc3 f5 12.ba5 Ra5 13.Rb1 Bc8 14.0–0; B) 8...Bd5 9.Nf3 (9.f3 Be7 10.Nc3 0–0 11.Nh3 h6 12.b5 Na5 13.Nd5 Nd5 14.0–0) 9...e4 10.Nd4 0–0–0 11.0–0 Kb8 12.b5 Nd4 13.Bd4 Qe6 14.Nc3; C) 8...a5 9.b5 Ne7 10.Nf3 Bf5 11.Qc4 Be6 12.Qa4 Ng6 13.Nc3 Be7 14.h4; D) 8...Bg4 9.Nf3 (9.Nc3 0–0–0 10.Nf3 Kb8 11.Rd1 a6 12.0–0 Qd7 13.b5 ab5 14.Nb5; 9.Bg4 Ng4 10.b5 Nd8 11.Nf3 Qg6 12.d3 Ne6 13.h3 e4 14.de4; 9.b5 Be2 10.Ne2 Ne7 11.0–0 0–0–0 12.f4 ef4 13.Nf4 Rg8 14.Bd4) 9...a6 10.Nc3 0–0–0 11.Rd1 g6 12.d4 ed4 13.Nd4 Be2 14.Nce2; E) 8...0–0–0 9.Nc3 (9.Nf3 e4 10.Ng5 Ne5 11.Bd4 Qc6 12.Qc6 Nc6 13.Bf6 gf6 14.Ne4) 9...e4 10.Nh3 Bh3 11.gh3 Qe6 12.Nb5 Bd6 13.Qc4 Qe7 14.Rc1.

7.Be2 Nc6 8.Nc3 A) 8...Be7 9.Nf3 (9.Qc2 a6 10.Nf3 Qd7 11.b5 ab5 12.Nb5 Bf5 13.Qc4 Be6 14.Qc2) 9...Rc8 10.Ng5 0–0 11.Ne6 Qe6 12.0–0 Rcd8 13.Qc2 g6 14.Bf3; B) 8...Rc8 9.Nf3 (9.Qc2 Be7 10.Nf3 0–0 11.Ng5 Rcd8 12.Ne6 Qe6 13.0–0 g6 14.h3; 9.Nh3 Bf5 10.b5 Na5 11.f4 ef4 12.Nf4 Rd8 13.Rf1 Be7 14.Nfd5) 9...Be7 10.Ng5 0–0 11.Ne6 Qe6 12.0–0 Rcd8 13.Qc2 g6 14.Bf3; C) 8...0–0–0 9.Nf3 a6 10.Qc2 Bg4 11.Rd1 Kb8 12.0–0 g6 13.Qa4 Bg7 14.h3; D) 8...h5 9.Nf3 (9.Qc2 Qd7 10.Nf3 Bf5 11.Qb3 0–0–0 12.Rd1 e4 13.Ng5 Kb8 14.0–0) 9...0–0–0 10.Qc2 a6 11.b5 ab5 12.Nb5 Qc5 13.Qa4 Bd6 14.Ng5; E) 8...a6 9.Nf3 (9.b5 ab5 10.Nf3 Qd8 11.Ng5 b4 12.ab4 Ra1 13.Qa1 Bb4 14.Ne6; 9.Qc2 Be7 10.Nf3 Qd7 11.b5 ab5 12.Nb5 Bf5 13.Qc4 Be6 14.Qc2) 9...0–0–0 10.Qc2 Qd7 11.b5 ab5 12.Nb5 Bd6 13.0–0 Bd5 14.Qa4.

7.Be2 Nc6 8.Nf3 e4 (8...a6 9.Nc3 0–0–0 10.Qc2 Kb8 11.b5 ab5 12.Nb5 Qc5 13.Qc5 Bc5 14.Ne5) 9.Ng5 Qd5 10.Ne6 Qe6 11.Qc2 0–0–0 12.0–0 Be7 13.Nc3 Kb8 14.Nb5.

7.Be2 e4 8.Nc3 A) 8...Be7 9.f3 (9.Nh3 0–0 10.Ng5 Qe5 11.Ne6 Qe6 12.0–0 a5 13.f3 ef3 14.Bf3; 9.Qc2 0–0 10.Nh3 a5 11.Ne4 Ne4 12.Qe4 Rd8 13.Bc3 ab4 14.Bb4) 9...0–0 10.fe4 a5 11.Nf3 Nc6 12.b5 Ne5 13.d4 Nf3 14.Bf3; B) 8...Qe5 9.Qc2 (9.f3 Qg5 10.g3 Qh6 11.Ne4 Nbd7 12.Nf6 Nf6 13.Qa4 Bd7 14.Bb5; 9.f4 Qf5 10.Nh3 Be7 11.Nf2 Bd7 12.g4 Qe6 13.f5 Qc6 14.g5; 9.d3 Nc6 10.de4 Ne4 11.Nf3 Qf6 12.Qc1 Nc3 13.Bc3 Qh6 14.b5) 9...Bd6 10.f4 Qf5 11.Nh3 0–0 12.Ng5 Nc6 13.0–0 h6 14.Nge4; C) 8...Nc6 9.f3 Be7 10.Ne4 Qd5 11.Nf6 Bf6 12.Bf6 gf6 13.Nh3 Bh3 14.gh3.

7.Be2 e4 8.f3 A) 8...Be7 9.Nc3 (9.fe4 Ne4 10.Nf3 0–0 11.Nc3 Nc3 12.Bc3 Nd7 13.0–0 Bd5 14.Qc2) 9...0–0 10.fe4 a5 11.Nf3 Nbd7 12.Nb5 Qc6 13.e5 Ne8 14.0–0; B) 8...Nbd7 9.Nc3 0–0–0 10.Qc2 Kb8 11.Ne4 Ne4 12.fe4 Ne5 13.Nf3 Nd3 14.Bd3; C) 8...a5 9.Bf6 (9.fe4 Ne4 10.Nc3 Nc3 11.Bc3 Be7 12.Nf3 0–0 13.ba5 Nc6 14.0–0; 9.Nc3 Be7 10.Ne4 Ne4 11.fe4 0–0 12.Nf3 Nd7 13.e5 Qd5 14.Qc2) 9...gf6 10.Nc3 Qd8 11.ba5 Rg8 12.g3 Ra5 13.fe4 Nc6 14.Qb1; D) 8...Nc6 9.Nc3 (9.Bf6 gf6 10.Nc3 0–0–0 11.Ne4 Qe7 12.Nh3 Bh6 13.Qc2 Rhg8 14.Ng3; 9.fe4 Ne4 10.Nc3 Nc3 11.Bc3 Qd5 12.Bf3 Qb5 13.Ne2 0–0–0 14.0–0) 9...Bf5 10.fe4 Ne4 11.Nf3 0–0–0 12.b5 Na5 13.Ne4 Be4 14.Bc3.

7.Be2 e4 8.Bf6 gf6 9.Nc3 (9.f3 Rg8 10.Nc3 f5 11.fe4 Rg2 12.Nf3 fe4 13.Ne4 Qd8 14.Qa4; 9.Nh3 Nc6 10.Nc3 f5 11.Nb5 Qe5 12.Nf4 0–0–0 13.Nc3 Rg8 14.Ne6) 9...f5 10.d4 Nc6 11.Nh3 0–0–0 12.Nf4 Rg8 13.0–0 Bg7 14.Ne6.

7.Be2 e4 8.Nh3 A) 8...Nc6 9.Nf4 (9.Ng5 h6 10.Ne6 Qe6 11.Qc2 0–0–0 12.0–0 Bd6 13.Bc4 Qg4 14.h3; 9.Nc3 Bh3 10.Nb5 Qd7 11.gh3 Be7 12.Nd4 0–0 13.Nc6 bc6 14.Qa4; 9.Qc2 a5 10.Bf6 gf6 11.Nc3 f5 12.ba5 Ra5 13.Rb1 Bc8 14.0–0) 9...0–0–0 10.Nc3 a6 11.b5 ab5 12.Nb5 Qd7 13.Bc3 Nd5 14.Qa4; B) 8...a5 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Qb4 12.Ng5 Be7 13.0–0 Nc6 14.Nb5; C) 8...Bf5 9.Nc3 (9.Nf4 Nc6 10.Nc3 Qd7 11.b5 Ne7 12.f3 ef3 13.Bf3 0–0–0 14.a4; 9.g4 Be6 10.Qc2 Nc6 11.Bf6 gf6 12.Nc3 Qe5 13.b5 Ne7 14.Nf4) 9...Nc6 10.g4 Be6 11.Qc2 h6 12.Ne4 Ne4 13.Qe4 0–0–0 14.Bc3; D) 8...Bh3 9.gh3 Nc6 10.Qa4 0–0–0 11.b5 Ne5 12.Qa7 Nfd7 13.Qa8 Nb8 14.Bd4.

7.Be6 Qe6 8.d4 Bd6 =.

7.Be6 Qe6 8.d4 e4 =.

7.Be6 Qe6 8.Ne2 Bd6 9.d4 0–0 10.Nd2 (10.de5 Be5 11.Be5 Qe5=) 10...Rd8 (10...e4 11.0–0=+) 11.Qc2 c6 (11...Qg4 12.Ng3 ed4 13.Bd4=) 12.de5 Be5 13.Be5 Qe5 14.0–0 Nbd7 15.Rfd1 c5 16.Nc4 (16.Rac1 cb4 17.ab4 Nb6=) 16...Qe7 (16...Qe4 17.Qe4 Ne4 18.bc5 Ndc5 19.f3=) 17.Nd6 b6 (17...cb4 18.ab4 Ne5 19.Qc5=) 18.Ng3+= Ne8 (18...Qe6 19.Ngf5+=) 19.Ngf5 Qe6 20.Rab1 cb4 21.Ne8 Re8 22.Nd4 Qg6 (22...Qf6 23.ab4 Ne5 24.Qa4+=) 23.Qg6+= hg6 24.Rb4 Ne5 25.Nb5 (25.f4 Ng4=) 25...Rec8 (25...Nc6 26.Rc4 Red8 27.Rdc1+/–) 26.f4 (26.Rbd4 a6 27.Nd6 Rc2+=) 26...Ng4 27.e4 Rc2 28.Rb3 Re2 (28...Nf2 29.Rd4+=) 29.Rg3 (29.Nc3 Ne3 30.Ne2 Nd1+=) ½–½. Rohde,Friedhelm – Kranabetter, corr ICCF WT–M–GT–346, 1994.

7.Be2 Be7 8.Nf3= Nbd7 (8...e4 9.Nd4=) 9.Nc3 c6 (9...a6 10.d4=) 10.0–0 (10.d4 a5=) 10...0–0 11.Rc1 (11.d4 a5=) 11...Rad8 (11...a5 12.b5=) 12.Qc2 Bg4 (12...Ng4 13.h3 Nh6 14.Ne4+=) 13.Rfd1+= Qb8 (13...Qe6 14.d4 Bf3 15.Bf3 ed4 16.ed4+=) 14.h3 Bh5 15.d3 h6 (15...Rfe8 16.Ne4=) 16.Ne4 Bg6 17.Nh4 Bh7 18.Ng3 Rfe8 (18...Nd5 19.Nhf5 Bg5 20.Bf3+=) 19.Nhf5 Bf8 20.e4 (20.d4 e4 21.b5 g6 22.bc6 bc6=) 20...Bf5 (20...c5 21.bc5 Bc5 22.Bf3=) 21.Nf5 g6 (21...c5 22.bc5 Rc8 23.Qb3+=) 22.Ne3 (22.Ng3 c5=) 22...c5= 23.Qb3 (23.bc5 Bc5 24.Ng4 Ng4 25.Bg4 b6=) 23...b5 (23...cb4 24.ab4 a6 25.f3+=) 24.Bc3 (24.Rc2 Qb6=) 24...a6 25.Rc2 (25.Rd2 Qd6=) 25...Qd6 26.Bd2 Rc8 27.Rdc1 h5 28.Nf1 (28.a4 Qe6 29.Nd5 ba4=) 28...Rc7 (28...Qe6 29.Qe6 Re6 30.Be3+/–) 29.Nh2 Rec8 30.Nf3 Ne8 31.Qa2 Ng7 (31...Bg7 32.Qb2+=) 32.Ng5 (32.bc5 Nc5 33.Ba5 Rc6=) 32...Ne6 (32...Qf6!?=) 33.Ne6+= Qe6 34.Qe6 fe6 35.Bd1 (35.Be3 Kf7+=) 35...Bd6 (35...Kf7 36.Be3+=) 36.Kf1 (36.g4 hg4 37.Bg4 Kf7+=) 36...cb4 (36...Kf7 37.h4+=) 37.Rc7 Rc7 38.Rc7 Bc7 39.Bb4 (39.ab4 Kf7 40.g4 hg4 41.hg4 Bd6–/+) 39...Kf7= 40.Ke2 ½–½. Degterev,Pavel (2275) – Klykow,Luke (1835), BI–2007–P–00013, 2007.

5.c4 c6

6.Qb3 Be6 7.Nf3 Nbd7 8.Ng5 Be7 9.Ne6 fe6 10.b5? (better is 10.Be2=) 10...0–0 11.Be2 e4 (11...Nc5 12.Qc3 dc4 13.Qe5 cb5 14.Qd6 Bd6 15.Nc3–+) 12.a4 Qc7 (12...Nc5 13.Qc3–/+) 13.h3 Rf7 (13...Nc5 14.Qc2 cb5 15.ab5 Rfc8+=) 14.0–0 Raf8 15.d4 (15.Nc3!?+=) 15...ed3–/+ 16.Qd3 Ne4 17.f4 Ndc5 18.Qd1 g5 (better is 18...Bf6!? 19.Bf6 Rf6 (19...Nf6?! 20.Nc3+=; worse is 19...gf6 20.Qc2+=) 20.bc6 bc6–/+) 19.Bh5+= Rf6 (better is 19...Rf5 20.Bg4 Bf6 21.Bf5 Bb2=) 20.Be5?? (better is 20.cd5 cd5 21.Nc3=) 20...Qe5!–+ 21.fe5 Rf1 22.Qf1 Rf1 23.Kf1 Ng3 24.Kf2 Nce4 25.Kf3 Nh5 26.g4 Ng7 27.cd5 ed5 28.Ra2 Bb4 29.Rb2? c5 30.Rb3 Kf7 31.Ke2 Ke6 32.Na3 Ke5 33.Nc2 Ba5 34.Ne1 Be1 35.Ke1 Ne6 36.a5 c4 37.Ra3 N6c5 38.Ra2 Nd3 39.Kf1 Nc3 40.b6 a6 41.Rc2 d4 42.Kg1 Ke4 43.ed4 Kd4 44.Rh2 Ne4 45.Ra2 c3 46.Ra4 Ke3 47.Rc4 Ndc5 0–1. Buck,K1 (1835) – Knors,R (2110), Arco Open A, Arco ITA, 2009.

6.Qc2 Nbd7 7.c5 Qc7 8.Nf3 Be7 9.Nc3 a5 10.Rd1 ab4 11.ab4 0–0 12.Be2 b6 13.Na4 bc5 14.Nc5 Nc5 (better is 14...e4 15.Nd4 Nc5 16.bc5 Ba6+=) 15.Be5+= Qd7 16.bc5 Ne4 17.d4 f6 18.Bg3 Qf5 19.Bd3 Ba6 20.Nh4 Qe6 21.0–0 f5 22.Nf3 g5 (22...Bd3 23.Qd3 Bf6 24.Bf4+/–) 23.Ra1 (23.Ba6 Ng3 24.fg3 Ra6+/–) 23...Bd3 24.Qd3 Ra1 25.Ra1 f4 26.ef4 gf4 27.Bh4 Bh4 28.Nh4 Qf6 29.Nf3 Nc5 30.Qd1 Nd7 31.Ra7 Qd6 32.Qc2 Rc8? (32...Rf7 33.Ra8 Rf8 34.Ra6+/–) 33.Ne5 (33.Qf5 Rc7 34.Rc7 Qc7 35.Qe6 Kf8+–) 33...Qb4? (33...Rc7 34.Ra8 Nf8 35.Qf5+–) 34.g3?? (34.h3 Qd4 35.Rd7+– (35.Nd7 Qa7 36.Qf5 Qa1 37.Kh2 Ra8+=)) 34...Qe1 35.Kg2 Nf6 36.Nc6?? (36.f3 Rf8 37.Qf5 Qd2 38.Kh3 fg3 39.Ng4+–) 36...fg3?? (better is 36...f3 37.Kf3 Rc6–/+) 37.hg3 (37.Qf5 Qe4 38.Qe4 Ne4 39.Ne7 Kh8 40.Nc8 gh2 41.Kh2 Nf2+–) 37...Qe6?? (better is 37...Kh8+/–) 38.Ra6 Qd7 1–0. Sindermann,Peter (1970) – Leckner,Thomas (1710), Landesliga Sued, 2008.

6.Nc3 Nbd7 7.cd5 cd5 (7...Nd5 8.d4=) 8.Nb5 Qb6 9.f4 Be7 (9...Bd6!? 10.Nf3 A) 10...ef4? 11.Bd4 (11.Nd6 Qd6 12.ef4 Qf4=+) 11...Qa6 12.Nc7 Bc7 13.Ba6 ba6 14.Qc2+–; B) 10...Bb8 11.fe5 Ng4+/–) 10.Rc1+– (10.Be5?! Ne5 11.fe5 Ne4+=) 10...0–0 (10...Bd8 11.fe5 (11.Be5?! Ne5 12.fe5 Ne4+/–) 11...Ne4 12.Qb3+–) 11.Nc7 (11…Rb8 12.fe5+–; 11.Be5?! Ne5 12.fe5 Bg4+=) 1–0. Thomas,Richard H – Anderson,J, corr British CC Ch, 1997.

6.Nc3 Bg4 7.f3 Be6 8.cd5 Nd5 9.Nd5 Bd5 10.e4 =.

6.c5 Qc7 7.Ne2 Bg4 8.Qc2 Nbd7 9.Ng3 Be7 10.h3 Be6 11.Be2 0–0 (11...0–0–0 12.Nf5 Bf5 13.Qf5=+) 12.Bg4 (12.0–0!?=) 12...e4 13.Qd1 (13.Be6 fe6 14.0–0 b6 15.cb6 ab6–/+) 13...Ng4–/+ 14.hg4 Ne5 15.Be5 Qe5 16.Nc3 Qg5 17.Nf5 (17.f3 Bf6–/+) 17...Bf6 (17...Bf5 18.gf5 Qf5 19.Qh5 Qh5 20.Rh5–/+) 18.Qe2 (18.d4 ed3 19.Qd3 Bf5 20.gf5 Qg2–+) 18...Bf5 19.gf5 Qf5 20.0–0–0 (20.Rd1 Qg6–/+) 20...Rfe8 (20...a5 21.Qh5 Qh5 22.Rh5 ab4 23.ab4 Ra1 24.Nb1–+) 21.g4 Qe6 22.Rdg1 d4 23.ed4 Bd4 24.g5 Qb3 (25.Qh5 Qa3 26.Kd1 Kf8 27.Qh7 Bc3 28.dc3 Rad8 29.Ke2 Qc3 30.Qh8 Ke7 31.Qe8 Re8–+) 0–1. Chmielewski,A (from move no. 17 Frey) – Radziejewski,A, corr Poland, 1989.

6.c5 Qc7 7.Nf3 Nbd7 8.d4 ed4 (8...e4 9.Nfd2=) 9.Nd4 Be7 (9...a5 10.Qa4=) 10.Bd3 (10.Nf5 Bf8 11.Bd3 Ne5=) 10...Ne5 11.Bc2 (11.Be2 b6=) 11...Nc4+= 12.Bc3 0–0 (12...b6 13.cb6 ab6 14.Bd3+=) 13.Nf5= Bf5 14.Bf5 Rfe8 (14...b6 15.0–0=) 15.0–0 g6 (15...b6 16.Bd4=) 16.Bc2 (16.Bd3 Ne5=) 16...Rad8 (16...b6 17.Qd4=) 17.Qd4+= Rd7 (17...Qd7 18.Rd1+=) 18.g4 (18.Rd1 b6+=) 18...g5 (18...h6!?=) 19.f4+/– 1–0. CountFromHolland – xikim, playchess.de, 2003.

6.c5 Qc7 7.Nf3 Nbd7 8.Be2 Be7 9.d3 b6 10.cb6 ab6 11.Nbd2 0–0 12.Qc2 Ba6 13.e4 (13.Rc1 c5+=) 13...de4 14.de4 Be2 15.Ke2 c5 16.b5 Rac8 (16...Ra5 17.a4+=) 17.Nc4 Now all is on e5 (17.Rhd1 Rcd8+=) 17...Qb7= 18.Nfd2 Ne8 19.Ne5 Ne5 20.Be5 Qd7 21.a4 Qg4 22.Kf1 f5 (22...Bf6 23.Bf6 Nf6 24.f3+=) 23.f3 (23.Nc4 Bd8+/–) 23...fe4 24.Qc4 (24.Qe4 Qd7 25.Nc4 Bd8+/–) 24...Kh8+= 25.Qe4 Qd7 26.Nc4 Qe6? (better is 26...Nf6!? 27.Qe2 Qb7+=) 27.Re1+– Bf6 28.Bf6 Qf6+/– 29.Kf2 Qh6 30.Qe6 Qh4 31.g3 Qd4 32.Kg2 Nf6 33.Nd6 Rc7+= 34.Nc4 Rcc8 35.Rc1 Rce8 36.Qd6 Nd5 37.Rhd1 Ne3+= 38.Ne3 Qe3 39.Qd3 Rf3 40.Qe3 Rfe3 41.Rd6 Rb8 42.Rcd1 h6 43.Rd8 Re8 44.R8d6 Ra8 45.Rb6+= Ra4 46.Rc6 c4 47.b6 Rb4 ½–½. Krafzik,Joachim (1930) – Bierbach,Utz Friedrich (1775), Bad Wildungen op Seniors–A 1st, 2004.

6.c5 Qe7 7.Nf3 (7.d4 e4=) 7...e4 8.Ne5 Nbd7 9.Nd7 Bd7 10.d4 (10.Be2 0–0–0=) 10...g6 (10...Ng4 11.h3 Qh4 12.g3+=) 11.Be2 Bg7 12.0–0 0–0 13.Nc3 White prepares b5 13...h5 (13...b6 14.Qa4=) 14.h3 Nh7 (14...Qe6 15.a4+=) 15.a4 White prepares the advance b5 (15.b5 Qg5 16.Kh2 Nf6+=) 15...f5 (15...Qg5 16.Kh2+=) 16.b5 Bh6 Black intends f4 (16...f4 17.ef4 Qf6 18.Qb3+=) 17.a5+/– f4 18.ef4 Bf4 19.a6 Ng5 (19...Rab8 20.ab7 Rb7 21.Bc1+=) 20.ab7 Nh3 21.Kh1?? (21.gh3 Qg5) 21...Nf2 (21...Nf2 22.Rf2 Qh4 23.Kg1 Qh2 24.Kf1 Qh1) 0–1. Tidemalm,Gustav – Soederberg Olsson,Susanne, corr Nordic Cup, 1988.

6.cd5 cd5 7.Bb5 Bd7 8.Qe2 a6 9.Bd7 Nbd7 (worse is 9...Kd7 10.Nf3 e4 11.Nd4+=) 10.Nf3 Be7 11.0–0 0–0 12.Nc3 e4 13.Ne1 Ne5 14.d3 Rac8 15.f4 ed3 16.Nd3 Nc4 17.Nc5 (17.Na4!?+=) 17...Qc6–/+ 18.Nd1 Bc5 19.bc5 Nd7 (worse is 19...Qc5 20.Bf6 gf6 21.Rf3–/+) 20.Bd4 Nc5 21.Qg4 Ne6 22.Bc3 f5 23.Qf3 Nc5 24.g4 Ne4 25.gf5 Nc3 (25...Rf5!? 26.Bd4–+) 26.Nc3 Nd2 (better is 26...Ne3!? 27.Qe3 Qc3 28.Qe6 Kh8 29.Qd5 b6–+) 27.Qd5–/+ Qd5 28.Nd5 Rcd8 29.Nc7 (better is 29.e4!?–/+) 29...Nf1–+ 30.Rf1 Rf5 31.Rb1 b5 (31...Rf6!? 32.e4 Rf4 33.Ne6 Rg4 34.Kf2–+) 32.Na6 Ra8 33.Nc7 Ra3 34.Nb5 (better is 34.Kf2!? Ra5 35.Kf3–+) 34...Re3 35.Rb4 Rf8 (35...Rf3!? 36.Nd4 R3f4 37.Rb8 Rf8 38.Rf8 Rf8 39.Kg2–+) 36.Nd6 0–1. Petrushin,Maxim – Nikolaev,Alexa (1975), Maestro Open, Berdsk RUS, 2008.

6.cd5 cd5 7.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

6.cd5 cd5 7.Nf3 Nfd7 8.Nc3 Nc6 9.Qb3 Nb6 10.Rc1 f6 11.d4 e4 12.Nd2 Be7 13.Be2 Be6 14.Nb5 Qd7 15.Nc3 0–0 16.Na4 Na4 17.Qa4 a6 18.0–0? (better is 18.Qb3!?=) 18...Nd4!–/+ 19.Qd1 (19.Bd4 Qa4 Discovered attack; 19.ed4 Qa4 Discovered attack) 19...Ne2 20.Qe2 Bd6 21.Nb3 Qf7 22.Nd4 Bd7 23.f4 ef3! 24.Qf3 (24.Nf3 Bb5 Combination; 24.Qf3 Rfe8 Combination; 24.Rf3 Bg4 Decoy; 24.gf3 Bh3 Combination) 24...Rfe8 25.Rfe1 Re4 26.Nf5 Bb8 27.Bd4 Qe6 28.Rf1 Be5 29.Rcd1 Qf5 30.Qf5 Bf5 31.Rf5 g6 32.Rf3 Bd4 33.Rd4 Rd4 34.ed4 Rf8 (34...Kf7!?–/+) 35.Rc3+= Rf7 36.Rc8 Kg7 37.Rd8 Rc7 38.Rd5 Kf7 39.Ra5 Ke6 40.b5 ab5 41.Rb5 Rd7 42.Kf2 Rd4 43.Rb7 Ra4 44.Rb3 h5 45.g3 g5 46.h3 ½–½. Grossmann,Philipp (1930) – Hoffmann,Ayar (1825), Regionalliga NO, 2007.

6.cd5 cd5 7.Nf3 e4 8.Nd4 Bd7 (8...Nc6 9.d3=) 9.Nc3 (9.d3 a5=) 9...Nc6 10.Ncb5 (10.Nc6 bc6 (worse is 10...Qc6 11.Nb5 Qb6 12.Bd4+/–) 11.d3 a5=) 10...Qb8 11.d3 Be7 (11...a6 12.Nc6 bc6 13.Bf6 ab5 14.Bd4=) 12.de4 Nd4 (12...de4!? 13.Rc1 0–0=) 13.Bd4+/– de4 14.Rc1 Bc6 15.Bf6 Bf6 16.Nd6 Ke7 17.Nf5 Kf8 (17...Ke8 18.Bc4 Bb2 19.b5 Bc1 20.bc6 bc6 21.Qc1+/–) 18.Nd4 (18.b5 Be8+/–) 18...Bd5 (18...a5 19.b5 Bd7 20.Be2+=) 19.Rc5 (19.Bc4 Bc4 20.Rc4 Qe8+=) 19...Qd8 20.Qh5 Ba2 21.Bc4 Threatening mate... how? 21...Bc4 22.Rc4 g6 (22...a6 23.0–0+=) 23.Qh6+/– White gets deadly initiative 23...Bg7 24.Qf4 Qd5 (24...Qe8 25.0–0+/–) 25.Rc5 Qa2 (25...Qd7 26.Qe4 Re8 27.Rd5+/–) 26.0–0 Re8 (26...f5 27.Rc7 Qd5 28.Rfc1 Bd4 29.ed4 Qd4 30.Rb7+–) 27.Qd6 Kg8 28.Qd7 With the decisive threat Rc2 28...Bd4 29.Rc7 (29.Rc7 Qe6 30.Qe6 Re6 31.ed4+/–) 1–0. Scholbach,Tillmann (2060) – Pljusnin,Victor (1900), IECG, 1999.

6.cd5 Nd5 7.Nc3 Nc3 8.dc3 (8.Bc3 A) 8...Be6 9.Nf3 (9.Qc2 Nd7 10.Nf3 Be7 11.d4 ed4 12.Rd1 c5 13.ed4) 9...Nd7 10.d4 e4 11.Nd2 Bd5 12.Be2 Be7 13.Qc2; B) 8...Bf5 9.Qf3 (9.Ne2 Nd7 10.Ng3 Bg6 11.Be2 Be7 12.0–0 0–0 13.f4) 9...Be6 10.Qg3 Nd7 11.Nf3 f6 12.Be2 Nb6 13.d4) ½–½. Fink,Norbert – Wloczek,Josef, Ruhrgebiet, 2000.

6.cd5 Nd5 7.d4 e4 =.

6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

6.Nf3 Nbd7 7.Nc3 a6 8.cd5 cd5 (--> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5 8.Nc3 a6).

6.Nf3 e4 7.c5 Qd8 8.Nd4 Be7 9.d3 0–0 10.Nd2 Re8 11.de4 Ne4 12.Ne4 de4 13.Bc4 Bf6 14.Qb3 Qe7 15.0–0–0 (better is 15.0–0!?=) 15...b6 16.h3 bc5 17.bc5 Qc5 18.g4?? (better is 18.Kd2 Re7 19.Ke1–/+) 18...Ba6–+ 19.Kb1 (19.Qb4 Qc4 20.Qc4 Bc4–+) 19...Qc4 20.Qc4 Bc4 21.Nf5 Bd3 22.Ka2 Bb2 23.Kb2 Nd7 24.f3 Rab8 25.Kc3 (25.Ka1 Nb6 26.Nd6 Re6 27.Ne4 Be4 28.fe4 Re4–+) 25...Nb6 26.fe4 Be4 27.Nd6 (27.Rh2 Bf5 28.gf5 Re3 29.Rd3 Nd5 30.Kc4 Rd3 31.Kd3 Rb3 32.Kd4 Ra3–+) 27...Bh1 (better is 27...Na4 28.Kc4 Bh1 29.Rh1 Re3 30.Kd4–+) 28.Ne8 Na4 29.Kd2 Rd8 30.Ke2 Bf3! (30...Bf3 31.Kf3 Rd1–+) 0–1. David,D2 (1725) – Prodileanu,A (2200), ch–ROU Men, 2012.

6.Nf3 e4 7.Nd4 (--> 5.Nd4 Nf6 6.c4 c6 7.e3).

6.Nf3 e4!? 7.Ne5 a5 =.

6.Nf3 Bg4 7.Be5+= Qe5 8.Ne5 Bd1 9.Kd1 Bd6 10.Nf3 Nbd7 11.cd5 cd5 12.Nc3 Rc8 13.Bb5 Ne4 (13...a6!? 14.Bd7 Kd7+/–) 14.Ne4+/– de4 15.Ng5 f5 16.Bd7 (better is 16.Nf7! Kf7 17.Bd7+–) 16...Kd7+= 17.Nf7 Rhf8 18.Nd6 Kd6 19.Ke2 Rc2 20.Rhc1 Rfc8 21.Kd1 R2c4 22.Rc4 Rc4 23.Rc1 Kd5 24.Rb1 b5 25.Rb3 Rc6 26.d3 Rg6 (26...Rh6 27.h3+/–) 27.g3 Rc6 28.Kd2 g5 29.Rc3 (29.h3 g4 30.hg4 fg4+/–) 29...Rc3 30.Kc3 g4 (30...ed3 31.g4 fg4 32.Kd3 h6=) 31.Kd2?? (31.d4 Kc6+–) 31...Ke5?? (31...ed3 32.Kd3 Ke5+=) 32.Kc2 (32.d4 Ke6+–) 32...Kd6? (32...ed3 33.Kd3 Kd5=) 33.Kc3 Ke5?? (better is 33...Kd5=) 34.d4+– Kd5 35.Kb3 (35.Kd2 Kc6+–) 35...Kd6 36.a4?? (better is 36.Kc2+–) 36…a6= ½–½. De Visser,Arno – Adrichem, 1989.

6.Nf3 Bg4 7.h3 Bf3= 8.Qf3 Nbd7 (8...e4 9.Qf5 Nbd7 10.d3=) 9.cd5 e4 (9...cd5 10.Nc3=) 10.Qd1 cd5 (10...Qd5 11.Nc3 Qe6 12.d3=) 11.Bb5 (11.Nc3 a6=) 11...Be7= 12.f4 (12.d3 a6 13.Bd7 Qd7 14.de4 de4 15.Qd7 Nd7=) 12...ef3 (12...0–0!?+=) 13.Qf3= 0–0 14.0–0 a6 15.Ba4 (15.Bd7 Qd7 16.Bd4 Qe6+=) 15...b5 (15...Rac8 16.Bd4=) 16.Bc2 (16.Bb3 Ne4=) 16...Rac8 17.Bf5 Rc7 18.Bd4 Ne5 (18...Re8 19.Nc3+=) 19.Qf4 (19.Qg3 Nc4 20.Qd6 Nd6+=) 19...Ng6 (19...Nc4 20.Qd6 Nd6 21.Nc3+=) 20.Bg6 (better is 20.Qd6 Bd6 21.Bf6 gf6 22.Nc3+=) 20...hg6?? (better is 20...Qf4 21.Bh7 Kh7 22.Rf4 Rc1 23.Rf1 Rc2+=) 21.Be5+– Qd7 (21...g5 22.Qh2 Ne4 23.Ra2+–) 22.Bc7 d4 23.Be5 de3 24.Qe3 Rd8 25.Nc3 Qe6 26.Bc7 Qe3 27.de3 Rd3 28.Be5 Re3 29.Bf6 Bf6 30.Nd5 (30.Nd5 Re6 31.Nf6 gf6 32.a4+–) 1–0. Moehring,Norbert (1950) – Kleifges,Matthias (2015), 31.Alpenpokal Oberstdorf op, 2005.

6.h3 Be7 7.Nf3 (7.cd5 Nd5 8.Nf3 Nd7=) 7...e4+= 8.c5 Qc7 9.Be5 Qd8 10.Nd4 Nbd7 11.Bh2 0–0 (11...a5 12.Nc3=) 12.Nc3 Ne8 (12...Re8 13.Be2=) 13.d3 Ndf6 (13...Nef6 14.de4 Ne4 15.Ne4 de4 16.Be2+=) 14.de4+= Ne4 15.Ne4 de4 16.Bc4 (16.Qc2 Nf6+=) 16...Kh8 (16...Bf6 17.0–0+=) 17.Qc2 Nf6 18.0–0 Bd7 (18...Qe8 19.Rfd1+=) 19.Be5 Qe8 20.Rac1 (20.Be2 b6+=) 20...Bd8 (20...b5 21.Bb3+=) 21.Bf6 (21.Bd6 Be7+=) 21...Bf6 22.Rfd1 Qe5 (22...b5 23.Ba2=) 23.Ne2 (23.Rd2 Kg8+=) 23...Bf5= 24.Ng3 (better is 24.Rd6=) 24...Bh4? (24...Bg6 25.Rd7=) 25.Ne2?? (better is 25.f4 Qf6 26.Rd6 (26.Ne4 Qe7+=) 26...Qd6 27.cd6 Bg3 28.Bb3+–) 25...Bg6 (25...Bf6 26.Qb3=) 26.Rd2 Bd8 27.Qc3 Qg5 28.Nd4 Bf6= 29.Rdd1 Bf5 30.Kh1= Bg6 31.Qe1 Rfe8 32.a4 Re5 33.f4!+/– ef3 34.Nf3 Re3 35.Ng5 Re1 36.Re1 Bg5 37.Rcd1 f6 38.Rd7 b6 39.Bf7 Bf7 40.Rf7 Bd2 41.Ra7!! (41.Ra7 Rb8 42.Re6 bc5 43.bc5+–) 1–0. Kuipers,Stefan – Kleijn,Christov, NED–ch U14 Schagen, 2003.

5.c4 Nc6

6.c5 Qe6 7.Bb5 Bd7 8.Ba4 (8.Nf3 e4 9.Ng5 Qf5=+) 8...Be7 9.Bb3 (9.b5 Na5 10.Nf3 Nc4–/+) 9...0–0–0–/+ 10.Ne2 Rhf8 (10...Rhe8 11.0–0=+) 11.d4 h6 (11...Rfe8 12.b5 Na5 13.c6 bc6 14.de5=) 12.0–0 (12.b5 Na5 13.c6 bc6 14.de5 Ne4 15.bc6 Qc6=) 12...e4 (12...Rfe8 13.b5 Na5 14.c6 bc6 15.de5 Nb3 16.Nf4+=) 13.Nbc3 g5 14.b5 Na5 15.Rc1 (15.c6 bc6 16.bc6 Bc6 17.Ba2=+) 15...Nb3 16.Qb3 h5 17.a4 (17.c6 bc6 18.a4 Rde8=) 17...Rg8 (17...h4 18.c6 bc6 19.Ba3+=) 18.Rc2 (18.c6 bc6 19.Ba3 Rde8+=) 18...h4 (18...Be8 19.c6 bc6 20.Ba3+=) 19.Rfc1 (19.c6 bc6 20.Ba3+=) 19...Rde8 (19...g4 20.Nf4 Qf5 21.Ncd5 Nd5 22.Nd5+– (22.Qd5?! Qd5 23.Nd5 Bg5+/–)) 20.Ba3 (20.c6 bc6 21.bc6 Bc6+/–) 20...Bf8? (20...c6 21.bc6 Qc6 22.Nb5+=) 21.Na2 Bg7 22.Nb4 c6 23.Rb1 Kb8 24.bc6+= Bc6 25.a5 g4 26.a6 Re7 27.Nf4 Qc8 28.Nfd5 Nd5 29.Nd5 Rd7 30.ab7 Qe8 31.Nb4 Rb7 32.Nc6 Qc6 33.d5 Qc8 34.Qb7 Qb7 35.Rb7 Kb7 36.c6 Kb8 37.d6 a5 38.d7 Kc7 39.Be7 Rb8 40.Rc1 g3 41.Bd6 Kd6 42.c7 gf2 43.Kf1 Ra8 44.d8Q Rd8 45.cd8Q Ke6 46.Rc6 Kf5 47.Qd5 Be5 48.Qf7 Bf6 49.Rf6 Ke5 50.Qe6# 1–0. SuperForte – KnightStalker, 1994.

6.cd5 Qd5 7.Nc3 Qe6 (7...Qd8 8.b5 Nb8 9.Nf3+=) 8.Nb5 Bd6 9.d4 (9.Nd6 cd6 10.b5 Na5=) 9...0–0 (9...e4 10.Rc1=) 10.Nd6 cd6 (10...Qd6? 11.b5 ed4 12.bc6 de3 13.fe3 Qc6 14.Rc1+–) 11.b5 Ne7 12.de5 de5 13.Rc1 Ng6 14.Nf3 Qe7 15.Be2 Bg4 (15...Bf5 16.0–0=) 16.Qa4 (16.0–0 Rfd8 17.Qc2 Qe8=) 16...Rfe8 (16...Rfd8 17.h3 Bf3 18.Bf3+=) 17.h3+= Bd7 18.0–0 a6 19.Qb3 Bb5 20.Bb5 ab5 21.Qb5 e5 seems the pivot of the position 21...e4 22.Nd2 Red8 23.Bf6 gf6 24.Nc4 Rac8 (24...Ne5 25.Ne5 fe5 26.Rc5+=) 25.Rcd1 Rd3 (25...Ne5 26.Ne5 fe5 27.Rd5 Qa3 28.Re5+/–) 26.a4 (26.Rd3!? ed3 27.Rd1+=) 26...Rc5= 27.Qb4 Rc7 28.Qe7 Ne7 (worse is 28...Re7 29.Rd3 ed3 30.Nb2+/–) 29.Nd6 f5 30.Rd3 ed3 31.Rd1 Rd7 32.Nc4 Nc6 33.Kf1 f4 (33...Nb4 34.a5+=) 34.Nb2 (34.ef4 Kg7+=) 34...fe3 (34...Nb4 35.ef4 Kg7 36.a5+=) 35.Rd3 Rd3 36.Nd3 ef2 37.Kf2 Kf8 38.Ke3 Ke7 39.Ke4 Kd6 40.Kf5 Kd5 41.Kf6 Kd4 42.Nf4 (42.Nc1 Nd8+/–) 42...Ke3 43.Nh5 Kf2 44.g3 Na7 (44...Kg2 45.h4+/– (45.Kf7?! Kh3 46.Ke6 h6=)) 45.Kf7 Kg2 46.h4 b5 (46...Nc8 47.Kg7 Nb6 48.Kh7+–) 47.ab5 Nb5 48.Kg7 Nd4 49.Kh7 Nf3 ½–½. Riepe,Bernhard – Rades,Andreas, DESC, 2006.

6.cd5 Nd5 7.d4 ed4 8.b5 =.

5.c4 Nbd7

6.c5 Qe6 7.Nc3 (7.d4 Be7=+) 7...c6 (7...Be7 8.Nf3=+) 8.Qc2 (8.d4 ed4 9.Qd4 b6 10.cb6 ab6=+) 8...Be7 (8...b6 9.cb6 ab6 10.Nf3=+) 9.d3 (9.Nf3 0–0=+) 9...0–0 (9...b6 10.cb6 ab6 11.Nf3=+) 10.Be2 (10.Nf3 b6=+) 10...b6 11.d4 (11.cb6 ab6 12.Nf3 Bd6=+) 11...ed4–/+ 12.ed4 Re8 13.Nf3 Ne4 (13...a5 14.Ng5 ab4 15.Ne6 bc3 16.Qc3 fe6 17.cb6+–) 14.Ne4 de4 (14...Qe4 15.Qe4 de4 16.Nd2=+) 15.Ne5= Ne5 16.de5 Bg5 (16...bc5 17.Qe4 cb4 18.ab4–/+) 17.0–0 (17.Qe4 Rb8+=) 17...Bf4 (17...Qg6 18.Rfd1 Bf4+/–) 18.Qe4+/– Be5 19.Be5 Qe5 20.Qe5 (20.Qc6!? Bd7 21.Qd7 Qe2 22.Rac1+/–) 20...Re5= 21.Bd3 bc5 22.bc5 Be6 23.Rfc1 Rd8 24.Ba6 Rdd5 25.h3 Rc5–/+ 26.Rc5 Rc5 27.Kh2 g6 28.Rb1 Ra5 29.Bb7 c5 30.Ra1 c4–+ 31.Be4 Kg7 32.Bc2 c3 33.a4 Rd5 34.Ra3 Rd2 35.Rc3–/+ Rf2 36.Rc7? Bd5–+ 37.Ra7?? Rg2 38.Kh1 Rc2 39.Kg1 Ra2 40.Kf1 Bb3 41.a5 h5 42.Ke1 Bc4 43.Rc7 Be6 44.Ra7 Bh3 45.a6 Bc8 (46.Re7 Ba6–+) 0–1. Unic – Keram (1800), ICC, 2003.

6.d4 Be7 =.

6.Nf3 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.Nf3 Nd7 5.e3 Ngf6 6.c4).

5.c4 Be6

6.c5+= Qc6 7.Be5 Be7 (7...Nbd7 8.Nf3 Bg4 9.Bd4+/–) 8.Nc3 (8.Ne2 0–0+/–) 8...a6 9.Nf3 Qd7 (9...Bg4 10.Be2+/–) 10.d4 0–0 (10...Nc6 11.Bd3+/–) 11.Bd3 Nc6 12.0–0 Bg4 13.h3 Be6 14.Ng5 (14.Bf4 h6+–) 14...Bf5+/– 15.Bf5 (15.Qc2 Bg6+/–) 15...Qf5 16.Nf3 Qd7 (16...Rac8 17.Qb3 Rfd8 18.Bf6 Bf6 19.b5 ab5 20.Qb5+/–) 17.Qd3 ½–½. Grobler,David – Flazinski,Pawel, corr or01–018 E–mail, 2002.

6.c5 Qd7 7.Be5 Nc6 (7...Be7 8.d4+/–) 8.Bb2 (8.Bf6 gf6 9.d4 Rg8+–) 8...0–0–0 9.Be2 d4 10.Bf3 (10.b5 de3 11.fe3 Nb8+/–) 10...de3 11.fe3 Qd3 (better is 11...Nd5!?+=) 12.Bc6 bc6 13.Ne2 Bb3 14.Qc1 Qe4 (14...Nd5!?+/–) 15.0–0 Bd5 16.Nf4 Nh5 (16...Qe7+–) 17.Nc3?? (better is 17.Nd5 Qd5 18.Qc2+–) 17...Qe5?? (better is 17...Nf4 18.Ne4 Ne2 19.Kh1 Nc1 20.Bc1 Be4 21.Rf7 Rd3–/+) 18.Ncd5+– Nf4 19.Be5 (better is 19.Nf4 Qe8 20.Bd4+–) 19...Ne2 20.Kh1 Nc1 21.Rac1 Rd5 22.Bc3 f6 23.Rce1 a5 24.e4 Rd3 25.e5 fe5 (25...ab4 26.Bb4 fe5 27.Re5+–) 26.Re5 Rg8 27.ba5 Rd5 28.Rd5 cd5 29.Bb4 Be7 30.g3 (30.c6 Bf6+–) 30...Bf6 (30...c6 31.Kg2+–) 31.c6 Re8 32.Rf5 (32.a6 Kb8 33.Bc5 d4+–) 32...Rd8 (32...Re6 33.Rd5 Rc6 34.g4+–) 33.Rf3 (33.a6 Kb8+–) 33...Kb8 (33...Re8 34.a6 Kb8 35.Bc5+–) 34.Bc5 d4 35.Rb3 Ka8 36.a6?? (better is 36.Rb7 Rc8 37.d3+–) 36...Rd5+/– 37.Bf8 Ra5 (37...Rd8 38.Bb4+/–) 38.Rb7 Be5 39.Bg7 Bg7 40.Rc7 Be5 41.Rh7 Ra6 42.c7?? (better is 42.Re7 Bd6 43.Re4+–) 42...Kb7+= 43.Kg2 (43.c8Q Kc8 44.Rh5–/+) 43...Ra3–/+ 44.Re7 Bc7 45.g4 Ra2 46.g5 Rd2 47.Kf3 Rh2 (47...Kc6 48.g6 Rd3 49.Ke2–/+) 48.g6 (48.Rd7 Rh4 49.g6 Rf4 50.Ke2 Kc6–/+) 48...Rh6 (48...Rh3 49.Kg4 Rg3 50.Kf5 Kc6–/+) 49.g7–/+ Rg6 50.Ke4 Rg4 51.Kd3 Kc6 52.Re4 Rg7 53.Rd4 Bb6 54.Rc4 Kd5 55.Rf4 Rg3 56.Ke2 Bd4 57.Rf5 Ke4 58.Rf7 Rg2 59.Kd1 Kd3 60.Rf3 Be3 61.Ke1 Rg1 62.Rf1 Rg2 63.Rf7 (63.Rf3 Ke4 64.Rf7–+) 63...Ra2 64.Rd7?? (better is 64.Kf1–+) 64...Bd4 65.Kf1 Rf2 66.Ke1 Rg2 (better is 66...Rf5–+) 67.Rf7 ½–½. mikebaldini (1720) – sastro (1695), gameknot.com, 2014.

6.c5 Qd8 7.Be5 Nbd7 (7...Be7 8.Nf3+=) 8.Bb2 (8.Bd4 Be7+/–) 8...Be7 (8...a5 9.Nf3+/–) 9.Nf3 0–0 10.Be2 Re8 (10...a5 11.Nd4+/–) 11.d3 (11.Nd4 Nf8+/–) 11...c6 (11...b6 12.c6 Nf8 13.Nbd2+/–) 12.Nd4 Qc7 13.Ne6 fe6 14.Nd2 (14.f4 b6 15.g4 Nf8+/–) 14...e5 (14...b6 15.d4+/–) 15.e4 (15.0–0 b6+/–) 15...Rad8 (15...b6 16.g4 Red8 17.g5+/–) 16.Qc2 Nf8 (16...Rf8 17.0–0+/–) 17.0–0 Ng6 18.g3 (18.Rae1 Nf4+/–) 18...de4 (18...Rf8!?+/–) 19.Ne4 Ne4 20.de4 Bg5 21.Rad1 Rd1 22.Rd1 Rd8 (22...Kh8 23.Bh5+–) 23.Rd8 Qd8 24.Qd1 (24.Qc4 Kh8+–) 24...Qd1 25.Bd1 Kf8 (25...Bf6 26.Bb3 Kf8 27.h4+–) 26.h4 (26.Bh5 Ne7+–) 26...Bf6 27.h5 Nh8 28.Kg2 (28.Bg4 Ke7+–) 28...Nf7 (28...Ke7 29.Bg4+–) 29.Bg4 Nd8 (29...b6 30.cb6 ab6 31.a4+–) 30.Kh3 (30.Bf5 h6+–) 30...Ke7 (30...Kf7 31.Bc8+–) 31.Bc8 (31.Bf5 h6+–) 31...Ne6 (better is 31...b6+–) 32.Bb7 Kd7 (32...Ng5 33.Kg2 Kd7 34.f3+–) 33.Kg4 Nd4 (33...a5 34.Kf5 ab4 35.ab4+–) 34.Ba6 (34.f4 Kc7 35.Ba6 g6+–) 34...Nb3 (34...g6 35.f4+–) 35.Bc3 (35.Kf5 h6+–) 35...Nd4 (35...h6 36.Bc4 Nd4 37.a4+–) 36.Bd3 (better is 36.f4+–) 36...Nb5 (36...h6 37.Bd4 ed4 38.Kf5+–) 37.Bb2 (37.Bb5 cb5 38.Kf5 Be7+–) 37...h6 (37...Nd4+–) 38.Bb5 cb5 39.f4 (39.Kf5 Bg5+–) 39...ef4 40.Bf6 gf6 (40...fg3 41.Bd4 g2 42.Kf3+–) 41.gf4 1–0. Krafzik,Joachim (1885) – Voelkel,Gustav, Bad Griesbach Seniors op 5th, 2002.

6.c5+= Qe7 7.Be5 Nc6 8.Bb5 +/–.

6.Nf3 Nbd7 7.c5+= Qe7 8.Ne5 (better is 8.Be5!? Ne5 9.Ne5+=) 8...Ne5=+ 9.Be5 Bg4 10.Qa4 Bd7 11.Bf6?? (better is 11.c6 Bc6 12.Bb5=) 11...Qf6–+ (11...Ba4 12.Be7 Be7 13.d4+/–) 12.Bb5 c6 13.Nc3 cb5 14.Qb3 Bc6 15.0–0 Rd8 16.a4 a6 17.ab5–/+ ab5 18.d4 Qf5 19.Ra5 Qd3 20.Qa3 Be7 21.Rd1 Qf5 22.Rc1 Qd3 23.Rd1 Qg6 24.Nb5 0–0 25.Nc3 Bh4 26.b5 Bd7–/+ 27.Nd5 Qf5 28.Nf4= Bf2 29.Kh1?? Rfe8–+ 30.c6 Re3 31.Qd6 bc6 32.Ra7 cb5 33.Nd5 Qe6 34.Qe6 Re6 (35.h3 Re4–+; 34...Be6?! 35.Ne3 Be3 36.Rb7–+; 34...fe6?! 35.Ne3 Be3 36.Rd3–+) 0–1. Garcia,Francisco Javier – Baena,Jesus, ESP–chT Spain, 1992.

6.Nf3 e4!? 7.Bf6 gf6 =.

5.c4 Be7

6.cd5 0–0 7.d4 e4 (7...ed4 8.Qd4 Qd5 9.Qd5 Nd5 10.Nc3 Nc3 11.Bc3=) 8.Nc3 a5 9.ba5 (9.b5 Bf5+=) 9...Ra5 Now all is on d5 10.Qc2 Nd5 (10...Bf5 11.Nge2+=) 11.Nge2 (11.Ne4 Qg6 12.Ne2 Be6+=) 11...Nc6 (11...Be6 12.Ne4 Qd7 13.N4c3+=) 12.Nd5 Rd5 (12...Qd5 13.Nc3 Qh5 14.d5 Rd5 15.Be2+=) 13.Nc3 Rh5 (13...Ra5 14.Qe4 Bf5 15.Qf3+/–) 14.d5 (14.Qe4 Re8+=) 14...Ne5 (14...Rd5 15.Nd5 Qd5 16.Bc4 Qa5 17.Bc3=) 15.Qe4 Bf5 16.Qb4 (16.Qd4 Bf6 17.Qb4 Nd3 18.Bd3 Bd3 19.Qd6 Bc3 20.Bc3 cd6+=) 16...Qb4 17.ab4 Bb4 18.Ra7 (18.Ra4 c5 19.f3 Bd3=) 18...Rb8 19.Ra4 c5 20.f3 Bd3 21.g4 (21.e4!?=) 21...Rh6 (worse is 21...Nf3 22.Kf2 Bc3 23.Bc3 Rd5 24.Bg2+=) 22.Be2 b5 (22...Rh3 23.Kf2 Be2 24.Ke2 Bc3 25.Bc3 Nf3 26.Rha1–/+) 23.Ra7+= Re8 24.Ba1 Rh3 25.Kd1 (25.Bd3!? Nd3 26.Ke2 Bc3 27.Kd3 Ba1 28.Rha1 Rf3 29.Re7=) 25...Be2 26.Ke2 Bc3 27.Bc3 Nf3 28.d6 b4 (28...Nh2 29.Re7 Ra8 30.Ba5=; 28...Rh2 29.Rh2 Nh2 30.d7+–) 29.Rf1? (29.d7 Rd8 30.Rc7 Kf8–/+ (30...bc3?? 31.Rc8 Kf8 32.Rd8 Ke7 33.Rf8 Ng1 34.Rg1 Rh2 35.Kd3 Rd2 36.Kc3 Rd7 37.Rc8+–; 30...Rh2?? 31.Rh2 Ng5 32.Rc8+–)) 29...bc3 (better is 29...Nh2!? 30.Rff7 Ree3 31.Kd1 Rd3 32.Bd2–+) 30.Rf3 c2 31.Rf1 Rh2 (31...Ree3?! 32.Kd2 Re8 33.Kc2 Rh2 34.Kc3+=) 32.Kd3 Rd8 33.Ra6 Rh6 (33...Rg2 34.Rc1 Rg4 35.Rc2–+) 34.Rfa1 (34.Ra7 Rhd6 35.Kc2 f6–+) 34...Rdd6 35.Rd6 Rd6 36.Kc2 f6 (36...Kf8 37.Ra7–+) 37.Ra8 (37.Ra7 Rd5–+) 37...Kf7 38.Rc8 (38.Kc3 Rd5–+) 38...Rd5 39.Rc7 Kg6 40.Kc3 (40.e4 Rg5 41.Kd3 Rg4 42.Rc5 h5–+) 40...Rg5 41.Kd3 Rg4 42.Rc5 h5 43.Rc8 (43.e4 h4–+) 43...h4 44.Ke2 Kf7 (44...Kf5 45.Rc5 Ke6 46.Rc6 Kd7 47.Ra6–+) 45.Kf3 (45.Rc7 Ke6–+) 45...Rg3 46.Ke2 (46.Kf2 g5–+) 46...h3 47.e4 h2 (47...g5 48.Kf2 Rg2 49.Kf1–+) 48.Rh8 Ra3 49.Kf2 Ra1 50.Rh2 Ra2 51.Kg1 Rh2 52.Kh2 Ke6 (52...Ke6 53.Kg2 Ke5–+) 0–1. Pierred (2260) – Wronskij (2595), Rated game, 5m + 0s, 2005.

6.cd5 Nd5 7.d4 e4 8.Qc2 =.

6.Nf3 e4 7.c5 (7.Nd4 a5=) 7...Qd8+= 8.Nd4 0–0 9.Be2 (9.d3 a5=) 9...a5 10.0–0 ab4 11.ab4 Ra1 12.Ba1 b6 13.Qc2 bc5 14.bc5 Ba6 15.Ba6 (15.f3 Be2 16.Ne2 Na6=) 15...Na6+= 16.Nc6 (16.Nc6 Qd7 17.Ne7 Qe7 18.Bf6 Qf6 19.d4=). Clark,Mark – Pech,Matej, OP–2006–0–00153, 2006.

5.c4 Bf5

6.Nf3 Nbd7 7.Nc3 g6 8.Nb5 Qb6 (8...Qc6 9.Be5 Ne5 10.Ne5+–) 9.c5 (9.Ne5?! c5+–; 9.Be5?! Ne5 10.Ne5 c6+/–) 9...Qc6 (9...Nc5 10.bc5 Bc5 11.Be5 Rc8+–) 10.Ne5 (< 10.Be5 Rc8 11.Nbd4 Ne5 12.Ne5 Qd7 13.Nd7 Bd7+–) 10...Ne5 11.Be5 (11…Rd8 12.Nc7 Kd7 13.Bb5+–) 1–0. Trkn – jivaro, ICC, 2004.

6.Nf3 e4 7.Be5 –/+.

5.c4 Bg4

6.Qb3 c6 7.d4= e4 8.Nd2 (8.Nc3 Be7=) 8...Be7 9.f3 ef3 (9...Bf5 10.g4 Bg6 11.g5=) 10.Ngf3 0–0 (10...Nbd7 11.cd5 cd5 12.Rc1=) 11.Bd3 (11.cd5 cd5 12.Bd3 Qe6=) 11...Qe6 12.Ne5 Bf5 (12...Nbd7 13.Qc2 b5 14.cd5 (worse is 14.Ng4 Ng4 15.Nf1 Ne3 16.Ne3 Qe3 17.Kd1 Nf6+=) 14...cd5 15.Bb5+=) 13.0–0 Bd3 14.Qd3 Nbd7 15.Nd7 Nd7 ½–½. Bendig,Frank – Bucek,Jiri, ICCF email, 2000.

6.Qb3 c6 7.Nf3 Nbd7 (7...Bf3 8.gf3 Nbd7 9.d4=) 8.Be2 (8.d4 Bf3 9.gf3 Rd8=) 8...e4+= 9.Nd4 (9.c5 Qc7 10.Nd4 Be2 11.Ne2 b6+=) 9...Ne5 (9...Be2!? 10.Ne2 dc4 11.Qc4 a5–/+) 10.c5= Qc7 11.f3 ef3 (11...Bh5 12.0–0=) 12.gf3 (12.Nf3 Nf3 13.gf3 Bh3 14.Bf6 gf6=) 12...Bh3 (12...Bh5 13.0–0=) 13.Nc3 (13.Rg1 Ng6 14.Rg3 Bd7=) 13...Be7 (13...Ng6=) 14.0–0–0 (14.Rg1 Ng6=) 14...a5+= 15.Rhg1 (15.Rdg1 ab4 16.ab4 b6+=) 15...ab4–/+ 16.ab4 Ng6 17.Rg3 Bd7 18.f4 (18.Na4+=) 18...0–0 (better is 18...b6!? 19.f5 bc5 20.bc5 Bc5 21.fg6 hg6+=) 19.Rdg1= Ne8 20.f5 (20.Na4 Bh4 21.Nb6 Rb8 22.Nd7 Qd7=) 20...Nh4 21.Qc2 (21.Na4 Bf6 (21...Bf5?? 22.Rg7 Ng7 23.Ne6+–) 22.Nb6 Ra7+=) 21...Bf6+= 22.Bd3 Bd4 23.ed4 Qf4 Increasing the pressure on the isolated pawn on f5 24.Ne2 Qf2 (24...Qh6!?=) 25.Qd1+/– Bf5 (25...Nf5? 26.R1g2 Ne3 27.de3+–) 26.Rf1 Qh2 27.Bf5 Nf5 28.Rf5 f6 (28...Qh4 29.Qe1 Qe7 30.Re5+/–) 29.Rf1 (29.Qf1 Ra4+/–) 29...Rf7 30.Qe1 (30.Re3 f5+/–) 30...Re7 31.Re3 Re3 32.de3 Ra4 33.Rh1 Qg2 34.Kc2 (34.Rg1 Qf3+=) 34...Qe4 (34...Nc7+=) 35.Kd2 (35.Kb3!? Ra8 36.Nc3+/–) 35...Ra2= 36.Qb1?? (better is 36.Kc1 Qe3 37.Kc2=) 36...Rb2!–+ 37.Qb2 Qh1 38.b5 Qh2 39.bc6 (39.Qa2 Qh3–+) 39...bc6 40.Qb7 Qc7 41.Qa8 (better is 41.Qb1–+) 41...Qd7 (better is 41...Kf7!?–+) 42.Nf4–/+ Kf7 43.Qa1? (43.Nd3!?–/+) 43...Qb7 (43...g5 44.Nd3 g4 45.Qh1–+) 44.Qc1 (44.Qh1 Qb2 45.Kd3 Qb3 46.Kd2 Qa2 47.Kd3 Nc7–+) 44...Qb4 (44...g5 45.Nd3–+) 45.Ke2 Qb3 (45...g5 46.Nd3 Qb3 47.Qd1 Qd1 48.Kd1–+) 46.Nd3 (46.Qa1 Qc2 47.Ke1 Qe4 48.Qa7 Qe7 49.Qe7 Ke7–+) 46...Nc7 (46...h5 47.Qf1–+) 47.Qd2 (47.Qd1 Qd1 48.Kd1 Ke6–+) 47...Nb5 48.Nf4 (48.Kf3 h5–+) 48...Nc3 49.Kf3 Ne4 50.Qa5 (50.Qd3–+) 50...Qd1 (50...Qd1 51.Kg2 Qg4 52.Kf1 Qf3 53.Ke1 Qe3 54.Ne2 g5–+) 0–1. Pirogov – Wall,Bill, internet, 1998.

6.Qb3 Nc6 7.cd5 Nd5 8.Bc4 =.

6.c5 Bd1 7.cd6+= Bc2 8.dc7 Nc6 9.Nf3 (9.f4!?+/–) 9...Bd6+= 10.b5 Na5 11.Be5 Be5 12.Ne5 Rc8 13.Nc3 Rc7 14.b6 ab6 15.Nb5 Re7 16.Nd6 Kf8 17.Rc1 Re5 18.Rc2 Ke7 (18...Nc6 19.Nb7 Re6 20.g3+/–) 19.Nc8 Kd8 20.Nb6 Nc6 21.Be2 (21.d4 Re6+/–) 21...d4 22.0–0 Kc7 23.Rb1 Rhe8 (23...Rd8!? 24.Bf3 Ra5+/–) 24.Bf3 Ne4 25.Be4 Re4 26.f3 d3 (better is 26...R4e5!?+/–) 27.Rc3+– (27.fe4?! dc2 28.Nd5 Kd6+=) 27...R4e6 28.Nd5 Kc8 29.Rd3 Ne7 30.Nb6 Kc7 31.Rd7 Kc6 32.a4 Nc8 (32...h6 33.Rb3 Nc8 34.Rdd3+–) 33.Rd3 (33.Rf7?! Nb6 34.a5 Nd7 35.Rg7 Rd6+/–) 33...Nb6 (33...Kc7 34.Rc3 Kb8 35.Nd7 Ka7 36.Rc7+–) 34.Rc1 Nc4 35.Rc4 Kb6 36.Rb3 Ka6 37.Rc7 Rb6 (37...Rd8 38.d4 Rf8 39.Rbb7 Re3 40.Rf7 Rf7 41.Rf7+–) 38.Rb6 Kb6 39.Rf7 Rd8 (39...Rg8 40.d4+–) 40.d4 g5 (40...Rg8 41.Kf2+–) 41.Rh7 Ra8 42.Rg7 Ra4 43.Rg5 Kc6 44.Rc5 (44.g4 Ra2+–) 44...Kd6 45.h4 Ra3 (45...b6 46.Rb5 Kc6 47.Rb3+–) 46.Kf2 Rb3 (46...Ra2 47.Kg3+–) 47.h5 b5 (47...Rb2 48.Kg3 Rb1 49.Kf4+–) 48.g4 (48.h6 Ra3+–) 48...Rb2 49.Kg3 Re2 50.h6 Re3 51.h7 Re8 52.g5 Rg8 53.f4 (53.hg8Q b4 54.Qd5 Ke7 55.Rc7 Ke8 56.Qg8) 53...b4 54.hg8Q b3 (54...Kd7 55.Qc8 Ke7 56.Rc7 Kd6 57.Qd7) 55.Rb5 (55.Qd5 Ke7 56.Rc7 Ke8 57.Qg8) 55...Kc6 (55...Kd7 56.Qf7 Kc8 57.Rb7 b2 58.Qd7) 56.Qd5 Kc7 57.Rb7 Kc8 58.Qd7 1–0. Fournier,Frederic (2090) – NolaDarling, Active, 2012.

6.c5 Qe6!? 7.Be2 Nbd7 =.

6.c5 Qe6!? 7.Ne2 Nc6 =.

6.Be2 Be2 7.Qe2 dc4 8.Qc4 c6 9.Ne2 Nbd7 10.Nbc3 b5 11.Qa2 (11.Qh4 a5 12.Ne4 Ne4 13.Qe4 ab4 14.ab4 Ra1 (14...Qb4?? 15.Ra8 Ke7 16.Qb4 Kf6 17.Qe4+–) 15.Ba1 Qb4 16.Qc6 Qb1 17.Qc1 Qc1 18.Nc1 Bd6=+) 11...Nb6 (11...a5!? 12.ba5 Nc5–/+) 12.Rd1 Nc4 13.d3 Nb2 14.Qb2 a5 15.0–0 (15.Ne4!? Qe6 16.Nf6 Qf6 17.d4 ab4 18.ab4=+) 15...ab4=+ 16.ab4 Qb4 17.Qb4 (better is 17.Qc2!?=+) 17...Bb4–+ 18.Ra1 0–0 19.Na2 Bd6 20.Rfb1 Nd5 21.g3 (21.Nac3 Nc3 22.Nc3 f5–+) 21...Ra3 22.e4 Rfa8 23.ed5 Ra2 24.Ra2 Ra2 25.Nc3 Rc2 26.Ne4 Bc7 27.d6 Bb6–/+ 28.Ra1 f6 29.Ra8 Kf7–/+ 30.Rb8 Ba5 31.d7 Ke7 32.Rg8 Kd7 33.Rg7 Ke6 34.Rh7 Bb6 35.Rh6 Kf5?? 36.Rf6+– Kg4 37.Kg2 b4 38.h3 Kh5 1–0. Meybohm,Dirk – Schmeier,U, 1988.

6.Be2 Be2 7.Qe2 Nbd7 8.cd5 Qd5 9.Nf3 e4 (9...a5 10.Nc3 Qb3 11.Nd1 ab4 12.Ne5 ba3 13.Nd7 Nd7 14.Bc3–/+) 10.Nd4 (10.Nc3!? Qh5 11.Nd4=) 10...Ne5+= 11.0–0 Nd3 12.Bc3 Bd6 13.f4 (13.f3 Qh5 14.g3 a5+=) 13...0–0 14.Qd1 c5 15.bc5 Bc5 16.Qb3 (better is 16.Nb3!? Be7 17.Bd4–/+) 16...Bd4–+ 17.Qd5 Be3! (worse is 17...Nd5 18.Bd4 f5 19.Nc3–/+) 18.de3 Nd5 19.Bd4 b6 20.Nd2 f5 21.Nc4 (21.Rad1 Rac8–+) 21...Rac8 22.Nd6? (22.Ne5 Nc3 23.Bc3 Rc3 24.Rfd1–+) 22...Rc6 23.Be5 Ne3 24.Rfb1 (24.Rfe1 Nc2 25.Rec1 Rc5–+) 24...Rc2 25.g3 (25.Kh1 Rg2 26.Rf1–+) 25...Rg2 26.Kh1 Nf2 0–1. mr5reasons1 (1750) – chesstryhard (1745), gameknot.com, 2012.

6.f3 Bd7 7.Nc3 =+.

6.f3 Bd7 7.cd5 Nd5 8.Nc3 =.

6.Nf3 Nbd7 7.h3 Bh5 8.g4 Bg6 9.c5 Qe6 10.d4 e4 11.Nh4 c6 12.Nd2 Be7 13.Ng2 Nf8 14.g5 Ng8 15.h4 h6 16.Nf4 Qd7 17.Ng6 Ng6 18.Bh3 Qd8 19.h5 Nf8 20.g6 fg6 21.hg6 Bg5 (21...Ng6? 22.Qh5+–) 22.Qe2 Ng6 23.f3 ef3 24.Nf3 Qe7 25.Ne5 Ne5 26.de5 Bh4 27.Kd2 h5 28.Raf1 g6 29.Rhg1 g5?? (better is 29...Rh6+=) 30.e6+/– Rh7 31.Be5 g4 32.Bg4! hg4 (32...hg4 33.Qg4 Combination) 33.Qg4 0–0–0 34.Qg8 b6 35.Bd6 Rg8 36.Rg8 Kb7 37.Be7 Re7 1–0. Crawford,Gary T (2085) – Ottenweller,Wolfgang (1990), IECG, 2006.

6.Nf3 e4 7.Be5 –+.

5.d3?! Nbd7

6.Nd2 a5 7.Ngf3 Qe6 8.b5 Bd6 9.c4 0–0 10.cd5 Qd5 11.a4 (11.Qc2 Re8+= (worse is 11...Qb5 12.d4 Qd5 13.Bc4+/–)) 11...Nc5 (11...Rd8 12.Qc2=) 12.Nc4 e5 seems the pivot of the position 12...Bg4 (12...Ncd7 13.Nd6 cd6 14.Be2+=) 13.Nd6 (13.Nce5 Be5 14.d4 Rfd8 15.de5 Qd1 16.Rd1 Rd1 17.Kd1 Nfe4+=) 13...cd6 14.h3 (14.d4 Bf3 15.gf3 ed4 16.Bd4 Qe6=) 14...Bf3 15.gf3 (15.Qf3? A) 15...Nd3?! 16.Bd3 Qd3 17.Qd1–/+ (17.Qb7? Ne4 18.Rd1 Qc2–+); B) 15...Qb3 16.Qe2 Na4–+) 15...Qe6 16.h4 Qe7 17.Bh3 (17.d4 ed4 18.Bd4 Rfc8=) 17...Ne6 18.d4 ed4 19.Bd4 Rfc8 20.0–0 (20.Bf5 Rc4 21.Bb2 d5+=) 20...Ne8 (20...Nd7 21.f4+=) 21.f4 (21.h5 Rc4 22.Bb2 Rh4–/+) 21...Qh4 22.Kg2 Qe7 23.Qd3 Nc5 24.Qd1 Rc7 25.Rh1 Qe4 26.Kg1 (26.Kh2 Qg6+=) 26...Qg6 27.Kf1 f5 (27...Rb8 28.Rc1+=) 28.Qc2 Rf7 29.Bc5 Rc8 30.Bf5 Rf5 31.Qa2 (31.Qb3 d5 32.Bd4 Rh5 33.Rh5 Qh5=) 31...d5 (31...Rf7 32.Bb6=) 32.Rg1 Qe6 33.Bd4 g6 (33...Qe4 34.Qb1=) 34.Rd1 (34.Qd2 Nd6=) 34...Nd6 35.Be5 Exerts pressure on the isolated pawn (35.Qd2 Nc4 36.Qd3 Rc7=) 35...Nc4+= 36.Bd4 Rh5 (36...Qe7 37.Qb1 Kf8 38.Rh1+=) 37.Qe2 Rh4 38.Qf3 Nd6 39.Rh1 (39.Qg3 Rh5 40.Qf3 Rf5+=) 39...Rh1+= 40.Qh1 Ne4 (40...Rc2 41.Qh4=) 41.Qh6= Rc7 (41...Qd7 42.f5 Rc7 43.Qf4 Qf5 44.Qf5 gf5 45.f3 Ng3 46.Kf2=) 42.Qh4 (42.b6 Rf7 43.Qh2 Qg4–/+) 42...Rc2 43.Qd8 Kf7 44.Ke1 Rc8 45.Qh4 (45.Qa5 Qg4 46.Qd2 Qg1 47.Ke2 Qf2 48.Kd3 Nd2 49.Rh1 Nb1 50.Rh7 Ke6 51.Rh2 Qf1 52.Re2 Qd1 53.Rd2 Qd2) 45...h5 46.Be5 (46.f3!? Nd6 47.Qf2=) 46...Ke8+= 47.f3 Nc3 48.Ra1 Qf5 ½–½. Cirulis,Ilmars (1905) – Salonen,Jukka (1915), FICGS, 2016.

6.d4 a5 +=.

6.Nf3 a5 7.b5 +=.

6.Nf3 c6 7.Be2 (7.Qd2 Be7+=) 7...g6 (7...a5 8.ba5 Ra5 9.0–0=) 8.c4= Bg7 9.cd5 (9.0–0 0–0=) 9...cd5 (9...Nd5 10.Nc3=) 10.0–0 0–0 11.Nc3 a6 12.Rc1 b6 13.Qc2 (13.d4 e4 14.Nd2 Re8=) 13...Bb7 14.h3 (14.d4 e4 15.Ne5 Ne5 16.de5 Qe5+=) 14...d4 (14...Rfc8 15.d4=) 15.Nd1 (15.Ne4 Be4 16.de4 de3 17.fe3 Bh6=) 15...Rac8 16.Qb1 (16.Qd2 Rc1 17.Bc1 de3 18.fe3 Nh5+=) 16...Nd5 17.Re1 de3 18.fe3 b5 19.Bf1 (19.Rc8 Rc8 20.Nd2 Qc6+=) 19...N7b6 (19...Rc1 20.Qc1 N5b6 21.Nc3+=) 20.Nd2 (20.e4 Nf4+=) 20...Na4 21.Qa1 (21.Rc8 Rc8 22.Ba1 Qe6–/+) 21...f5 22.Nb3 Rfe8 (22...Rc1 23.Qc1 Qe7 24.Be2–/+) 23.Na5 Ba8 24.Nc3 (24.Be2 Nb2 25.Qb2 e4 26.Rc8 Rc8–+) 24...Nb2 (24...Nac3 25.Bc3 f4 26.Bd2–+) 25.Qb2–/+ e4 26.d4 Ne3! 27.Ne2 f4 28.Rc8 Rc8 29.Rc1 Rf8 (29...Rf8 30.Nb3 f3–+) 0–1. Lalic,Bogdan – Uhlmann,Wolfgang, Sarajevo, 1980.

6.Nf3 Be7 7.Be2 0–0 8.0–0 a5 9.c3 (9.b5 Rd8=+) 9...c6 10.Nbd2 b6 11.Nh4 (11.c4 Qe6=+) 11...Bb7 (11...Qe6 12.Nhf3=+) 12.Nf5 Qe6 13.Ne7 Qe7 14.Nf3 Rfe8 15.Re1 (15.Qc2 c5=) 15...e4 16.Nd4 Ne5 17.de4 Ne4 18.Nf3 (better is 18.Rb1=+) 18...Nf2 19.Kf2 Ng4 20.Kg1 (20.Kf1 Ne3 21.Kg1 Nd1 22.Rad1 Qe3 23.Kf1 ab4 24.ab4–+) 20...Qe3 21.Kh1 Nf2 (22.Kg1 Nd1 23.Kh1 Nb2 24.Ba6 Ra6 25.Re3 Re3 26.h3 Nc4 27.b5 cb5 28.Nd4 b4 29.ab4 a4 30.Nb5 Bc6 31.Nd4 Bd7 32.b5 Ra5 33.Rd1 f6 34.Nc2 Rc3 35.Rd5 Ne5 36.Nb4 a3 37.Kg1 Rb3 38.Na2 Rb1 39.Kh2 Rb2 40.Rd6 Ra2 41.Rd5 Re2 42.Rd1 Bb5 43.Rd8 Kf7 44.Rc8 a2 45.Rc1 Bc6 46.Kg1 a1Q 47.Kf1 Qc1 48.Ke2 Ra2#) 0–1. Mennie,Norman – Hakulinen,Veikko, corr 3GMM–47, 1995.

5.d4 ed4

6.ed4 Qe6 7.Ne2 =+.

6.ed4 Be6 7.Nf3 Nbd7 (7...a5 8.ba5 Qe7 9.Ne5=+) 8.Bd3 Be7 9.0–0 0–0 10.Nbd2 Qf4 11.c4 (11.Bc1 a5 12.Nc4 Qg4 13.Na5 Ra7+=) 11...dc4=+ 12.Nc4 Bd5 13.Nfe5 Ne5 (13...Rad8 14.Bc1 Qh4 15.Ne3=) 14.de5= Ng4 15.g3 Qf3 16.Qf3 Bf3 17.Rfe1 (17.Rfc1 Rfd8 18.Rc3 b5=) 17...Rfe8 (17...Rfd8 18.Be4 Be4 19.Re4+=) 18.Bf5 (18.Nd2 Bd5+=) 18...Rad8= 19.e6 fe6 20.Be6 Kf8 21.Na5 h5 22.h3= Bf6 23.Bf6 Nf6 24.Rac1 Rd3 25.Nc4 Rd4 26.Ne5 Re6 27.Nf3 Re1 28.Re1 Rd3 29.Ng5 Ra3 ½–½. Fiedler – Lorentzen,Oeystein, corr 3GMM–10, 1995.

6.Qd4 Nc6 7.Qd1 Be7 8.Nf3 Bg4 9.Nbd2 a6 10.c4 0–0 11.Qc2 dc4 12.Bc4 Rfd8 13.0–0 Bh5 14.Rfd1 Bg6 15.Qb3 b5 16.Be2 Nd5 17.Rac1 Bf6 18.Nf1 Bb2 19.Qb2 Qe6 20.Ng3 Nb6 21.Qc3 Rd1 22.Bd1 Rd8 23.h4 (23.Bb3 Nc4+/–) 23...Rd3 (23...Rd6!?=) 24.Qc6+= Qc6 25.Rc6 Rd1 26.Kh2 Rd7 27.h5 Bb1 28.Rc1 Ba2 29.Ne5 Re7 30.Nd3 Be6 31.h6 gh6 32.Nc5 Bc8 33.Ne2 Nc4 34.a4 Ne5 35.ab5 ab5 36.Nd4 c6 37.Ra1 Kg7 38.Kg3 Rc7 39.Kh4 Ng6 40.Kh5 Ne7 41.e4 Ng6 42.g3 Ne5 43.f4 Bg4 44.Kh4 Nf3 45.Nf3 Bf3 46.g4 Re7 47.Ra3 Bh1 48.Rh3 Bg2 49.Rh2 Bf1 50.Rh1 Be2 51.Re1 Bc4 52.Ra1 f6 53.Ra6 Rc7 54.Ra3 Bf7 55.Ra8 Bc4 56.f5 Kf7 57.Kg3 h5 58.gh5 Ke7 59.Kf4 Kd6 60.Rd8 Ke7 61.Rb8 Kd6 62.Nb7 Ke7 63.h6 Rd7 64.Nc5 Rd1 65.Rb7 Ke8 66.Rh7 Bf7 67.Rh8 Ke7 68.h7 Rf1 69.Ke3 Re1 70.Kd4 Rd1 (70...Rh1 71.Na6+–) 71.Nd3 Rh1 72.Kc5 Rh2 73.Kc6 1–0. Degterev,Pavel (1685) – Pripoae,Nicolae (2265), AP–2005–Q–00005, 2005.

6.Bd4 Nc6 7.Bb2 Ne5 8.Qd4 Ng6 =.

6.Bd4= Nc6 7.Bb2 Be7 8.Nf3 0–0 (8...Bg4 9.Bd3=) 9.Be2 (9.Bd3 Bg4=) 9...Ne4 10.Nc3 Nb4 11.ab4 (better is 11.Ne4!? de4 12.Nd2=+) 11…Qb4–/+ (12.0–0 Nc3 (12...Qb2?! 13.Nd5 Bd6 14.Bc4=+) 13.Bc3 Qc3 14.Qd5 Qc2–/+) 0–1. Frank,Mario Alberto (2360) – Gutsche,Dieter (2395), IECG, 2001.

6.Bd4= Nc6 7.Bb2 Bg4 8.Be2 Qe6 9.Bg4 Ng4 10.Ne2 =.

6.Bd4 Bg4 7.Be2 Be2 8.Ne2 a5 =.

5.d4 Nbd7

6.c4 a5 7.b5 =.

6.c4= c6 7.de5 (7.Nd2 e4=) 7...Ne5 8.cd5 Nd5 9.Qd4 (9.Nf3 Nf3 10.Qf3 Qg6=) 9...f6 10.Be2 (10.Nc3 Be6=) 10...Be6 (10...a5 11.b5=+) 11.Nf3 a5 12.ba5 Nf3 13.Bf3 Ra5 14.0–0 Be7 15.Rd1 Qc7 16.Nc3 (16.Bh5 g6 17.Bg4 Bg4 18.Qg4 0–0+=) 16...Nb6 (16...Bd6 17.g3=) 17.Ne2 (17.Be2 0–0=) 17...0–0 (17...Nc4 18.Nf4 Bf7 19.Be2 Nb2 20.Qb2=) 18.Qf4 (18.Nf4 Bc4=) 18...Qf4 19.Nf4 (< 19.ef4 Nc4 20.Bc1 Ba3–/+ (20...Na3?! 21.Nd4 Bd5 22.Nf5=)) 19...Bf5 20.e4 Bc8 21.Bd4 Nc4 22.a4 Na3 23.Bb2 Ra4–/+ 24.Rdc1 Bd7 25.Nd3 Be6 26.e5 fe5 27.Nc5 Bc5 28.Rc5 Rfa8 29.Re5 Nc4 30.Ra4 Ra4 31.Re6 Nb2 32.Kf1 Kf7 33.Re4 Re4 34.Be4 h6 35.Ke2 Ke6 36.f4 Kd6 37.Kd2 Kc5 38.Kc2 Kd4 39.Bc6–/+ bc6 40.Kb2 Ke3 41.g3 h5 (42.Kc1 h4 43.gh4 Kf4–+) 0–1. Woschkat,Karl_Heinz – Euler,Wilfried, HL012, 1998.

6.c4 ed4 7.Bd4 dc4 8.Bc4 Qc6 (8...Ne5 9.Be2=) 9.Bf1 Be7 10.Nc3 0–0 11.Rc1 Ne8 12.Nb5 Qg6 13.Na7 Nb6 (13...Bf6 14.Nf3+/–) 14.Bb6 Bg4 15.Bd3 Qe6 16.Bc4 Qb6 17.Qg4 Qa7 18.Nf3 (18.Rc3 c5 19.Rb3 cb4 20.ab4 Qa4+=) 18...Qa3 19.0–0 Qb4 20.Nd4 (20.Rb1 Qa4=) 20...Nd6 (20...Nf6 21.Qe2+=) 21.Bd3 c6 22.Rb1 (22.Rfd1 Rfd8+=) 22...Qc5 23.Nf5 (23.Qh3 g6+=) 23...Nf5 24.Bf5 Ra7 (24...Rfb8 25.Rfc1 Qd6 26.Rb6+=) 25.Rfc1 Qa3 (25...Qe5 26.Qh5 g6 27.Bg6 Qh5 28.Bh5+=) 26.Rd1 g6 27.Bc8 h5 28.Qh3 Qa4 29.Rd7 Increases the pressure on b7 (29.Rf1 b5–/+) 29...Qe4 30.Rbd1 (30.Rdd1 b5 31.Rbc1 c5–/+) 30...Rc8 31.Re7 Qe7 32.Qc8 Kg7 33.Qh3 (33.Qb8!? b5 34.Rc1–/+) 33...Qf6–+ 34.e4 (34.Qd7 Ra1–+) 34...Ra1 35.Qb3 (35.Qd3 Rd1 36.Qd1 b5–+) 35...Rd1 (35...b5 36.Kf1–+) 36.Qd1 Qc3 37.f3 (37.g4 hg4 38.Qg4 b5–+) 37...b5 38.Kf2 b4 39.Ke2 b3 (39...b3 40.Qb1 b2–+) 0–1. Woschkat,Karl_Heinz – Lauer,Roland, DESC, 1999.

6.c4= e4 7.Nc3 a5 8.ba5 dc4 9.Bc4 +=.

6.c4 Be7 7.c5 Qe6 8.de5 Ne5 9.Ne2 c6 (9...Nc4 10.Nf4 Qc6 11.Bc4 dc4 12.0–0=) 10.Nd4 Qd7 11.Nd2 (11.Be2 b6=) 11...0–0 12.N2f3 Nf3 13.Qf3 b6 (13...Re8 14.Bd3 Ne4 15.Qe2=) 14.b5+= bc5 (14...cb5 15.Bb5 Qc7 16.Nc6 Bc5 17.Bf6 gf6 18.Qf6=) 15.Nc6 (worse is 15.bc6 Qc7 16.Nb5 Qc6–/+) 15...Ne4 16.Bd3 (16.Bc4 Bh4 (worse is 16...dc4 17.Qe4 Bd8 18.Qc4+/–) 17.g3 Qe6+/–) 16...f5= 17.Rd1 (17.Qd1 Bg5=) 17...Bd6 18.Qh5 Qe6 (18...Qc7 19.Be4 de4 20.Qg5=) 19.0–0 (19.Be4 Qe4 (19...de4? 20.Qg5 g6 21.Qh6+–) 20.Qg5 g6+=) 19...Nf6 (19...Bd7 20.Rfe1=) 20.Qg5 a6 21.a4 =. Mathioudakis,Diana – Bates,Andrew, IECG, 2000.

6.de5 Ne5 7.Nd2 Be7 8.Ngf3= Ng6 (8...Nf3 9.Nf3 0–0 10.Bd3=) 9.c4 (9.Bb5 Bd7 10.Bd7 Qd7=) 9...0–0 10.cd5 Qd5 (10...Nd5 11.Ne4 Qd7 12.Bc4+=) 11.Ne4?? (better is 11.Qc2+=) 11...Qe4–+ (12.Bd3 Qg4–+) 0–1. Woschkat,Karl_Heinz – Ball,Joerg, DESC, 2001.

6.de5 Ne5 7.Nd2 Bg4 8.Ngf3 Nf3 9.Nf3 =.

6.de5 Ne5 7.Nf3 Nf3 8.Qf3 =+.

5.d4 e4

6.c4 c6 7.Qc2 Qe6 =.

6.c4 c6 7.c5 Qc7 8.b5 b6 9.cb6 ab6 10.Nc3 c5 (10...Bd6!?+=) 11.dc5= Qc5 (11...Bc5 12.Nd5 Nd5 13.Qd5+=) 12.Nge2 (12.Rc1 Bg4 13.Be2 Be2 14.Nge2 Nbd7+/–) 12...Be6 13.Nd4 Bd6?? (13...Qc7 14.Rc1 Qb7= (14...Ba3?? 15.Ba3 Ra3 16.Nb1 Re3 17.fe3+–)) 14.Rc1+– Be5? (14...Ra3 15.Ne6 fe6 16.Nd5 Qd5 17.Qd5 ed5 18.Ba3+–) 15.Na4 (better is 15.Ne6 fe6 16.Ne4 Bb2 17.Nc5 bc5 18.Rc5 0–0+–) 15...Qd6 16.Ne6 fe6 (16...Bb2 17.Nc7 Ke7 18.Nb2 Ra3+–) 17.Rc8 Kf7 18.Be5 (worse is 18.Rh8 Bb2 19.Nb2 Qa3+–) 18...Qe5 19.Rh8 Ra4 20.Qa4 Qc3 21.Kd1 Ng4 22.Qc2 Qa1 23.Ke2 Nd7 24.h3 (better is 24.f3!? Ngf6+–) 24...Nge5 25.Qc7 (25.g3 d4 26.ed4+– (26.Qe4 d3 27.Qd3 Nd3 28.Kd3 Qd1 29.Kc3 Qc1 30.Kd4 Qd2 31.Bd3 Nc5 32.Ke5 Qd3 33.e4 Qe4 34.Kd6 Qd5 35.Kc7 Qb7 36.Kd6 Qd7 37.Ke5 Qd5 38.Kf4 Qe4 39.Kg5 Qf5 40.Kh4 Kg6 41.Rh7 Qg5)) 25...Kg6 26.Rc8?? (better is 26.Rg8 Nc4 27.Qg3 (27.Qd7?? Qb2 28.Kd1 Qd2) 27...Kh5 28.Qg4 (28.Qg7?? Qa2 29.Qb2 Qb2 30.Kd1 Qd2; 28.Rg7?? Qb2 29.Kd1 Qd2) 28...Kh6 29.Qg7 (29.Qe6 Nf6 30.Qe4 Ne4 31.h4 Qb2 32.Kf3 Qf2 33.Kg4 Ne3 34.Kh3 Qg3) 29...Qg7 30.Rg7 Kg7 31.Kd1 Na3 32.Kc1+–) 26...Qb2?? (better is 26...Nc5=) 27.Qc2+– Qb5 (27...Qa3 28.Rc3 Qa7 29.f4+–) 28.Kd2 Qa5 29.Qc3 Qa4 30.Be2 b5 (30...Qa7 31.f4 ef3 32.gf3+–) 31.Rb1 Nb6 (31...Nc4 32.Bc4 dc4+–) 32.Qe5 Qa5 33.Rb4 1–0. phildo (1850) – humbeekchess (1855), gameknot.com, 2014.

6.c4 c6 7.Nd2 g6 (7...Be7 8.Be2=) 8.c5 (8.Be2 Bg7=) 8...Qe7 9.Be2 (9.Ne2 Bg7=) 9...Bg7 10.Bc3 0–0 11.Nb3 (11.Qa4 Ne8=) 11...Be6+= 12.b5 (12.Rb1 b5+=) 12...cb5 (12...Rc8 13.Qd2+=) 13.Bb5= Bg4 (13...Rc8 14.Ne2=) 14.Ne2 (14.Be2 Be2 15.Ne2 Rc8=) 14...Rc8 15.0–0?? (better is 15.Rc1=) 15...a6–+ 16.h3 Bh5 17.g4? (better is 17.Ba4 Be2 18.Qe2–/+) 17...Bg4–+ (17...ab5?! 18.gh5 Nh5 19.Bd2–/+) 18.hg4 Ng4 (18...ab5?! 19.Nf4 Bh6 20.f3–/+) 19.Re1 (19.f3 Ne3 20.Qb1 Qg5 21.Kf2 Nf1 22.Qf1 Qh4 23.Ke3 ab5 24.Kd2–+) 19...Qh4 0–1. Baerngen,Eric – Blankenberg,Bruno, eMail Schach Wenzel, 1999.

5.Be2 Be7

6.c4 dc4 7.Bc4 Qc6 8.Ba2? (better is 8.Bf1!? e4 9.Nc3=) 8...Qg2–+ 9.Qf3 Bh3! 10.Qg2?? (10.Qh3 Qh1 Combination; 10.Nh3 Qf3 Double attack (10...Qf3 Deflection; 10...Qf3 Decoy)) 10...Bg2 11.Be5 c6 12.Ke2 Bh1 13.f3 Nbd7 14.Bd4 g5 15.h3 h5 Black intends g4 16.Nc3 Rg8 Black prepares the advance g4 17.Kf2 g4 18.hg4 hg4 19.fg4 Ng4 20.Ke2 Nge5 21.e4 Rg2 22.Ke3 (22.Kd1–+) 22…Bg5# 0–1. Rush,Bradley – Husemann,Andreas (1990), OP–2012–0–02085, 2012.

6.Nf3 e4

7.Nd4 0–0 8.0–0 a5 =.

7.Nd4 0–0 8.c4 dc4 9.Bc4 a5 10.b5 =+.

7.Nd4 0–0 8.c4 Nc6 9.Nb5 Qd8 10.N1c3? (10.cd5 Nd5 11.0–0 a5=) 10...a6?? (10...dc4 11.Bc4 a6 12.Nd4 Nd4 13.ed4 Qd4 14.Nd5 Qb2 15.Ne7 Kh8 16.Qc1–+) 11.Nd4?? (11.cd5 ab5 12.dc6 bc6+=) 11...Be6?? (better is 11...Nd4 12.ed4 dc4 13.Bc4 Qd4–/+) 12.Ne6 fe6 13.0–0 b5? (better is 13...d4!? 14.ed4 Nd4=) 14.cb5+/– ab5 15.Bb5 (15.Nb5 Na7+/–) 15...Ne5 16.Ne2 c6 17.Ba4 (better is 17.Be5 cb5 18.d3+/–) 17...Rb8?? (better is 17...Nc4 18.Bc3 c5=) 18.Be5+– Ra8 (18...Bd6 19.Bg3+–) 19.Bc6 Ra7 20.Nd4 Bd6 21.Ne6 Qe7 22.Bd6 1–0. FABOLOUS – AllKnighter, ChessWorld.net, 2003.

7.Nd4 c6 8.d3 0–0 9.0–0 Rd8 10.Nd2 a6 (10...a5 11.de4 Ne4 12.b5=) 11.c4+= b6 12.de4 de4 13.Qc2 c5 (13...Ng4 14.Bg4 Bg4 15.Ne4+/–) 14.Ne4+/– Ne4 15.Qe4 Ra7 16.bc5. Kuhlmann,AEJ – Hansen,Bjarne G, corr ICCF TT–4–90–12, 1990.

7.Ne5 Nbd7 8.Nd7 Bd7 9.c4 dc4 10.Bc4 Ng4 (10...0–0 11.Nc3=+) 11.f4 Bh4 12.g3 Qh6 13.Kf1? (better is 13.Rg1=+) 13…Bg3!–+ (14.Qe2 Nf2 (14...Bh2?! 15.Nc3–+; 14...Nh2?! 15.Kg1–+) 15.hg3 A) 15...Qh1?! 16.Kf2 h5 17.Qf1 (17.Bg7?? Qh2 18.Ke1 Qg3 19.Qf2 Qg7–+) 17...Qf3 18.Kg1 Qg3 19.Qg2 Qg2 20.Kg2=+; B) 15...Nh1–+) 0–1. Kamuf,Herbert – Villing,Dieter, Verbandsliga Nord, 1999.

5.Nf3 Nc6

6.b5 Nd8 7.Be5 Qe7 8.c4 (8.Nc3 c6+/–) 8...Ne4 (8...Be6!?+/–) 9.cd5+– Qc5 (9...Bg4 10.Bd4+–) 10.d4 (10.d4 Qd5 11.Qc2+–) 1–0. Wall,Bill – Poseidon, internet, 2001.

6.b5+/– e4 7.bc6 ef3 8.cb7 Bb7 9.Qf3 Be7 10.d4 (10.Nc3 Qb6 11.Nd1 Rb8+=) 10...0–0 (10...Bc8 11.Nc3 Rb8 12.Rb1=) 11.Nd2 c5 (11...Ne4 12.Rb1+=) 12.dc5+/– Qc5 13.Bd3 Rfe8 (13...Rfb8 14.0–0+/–) 14.0–0 Qc7 15.Qf5 (15.Bd4!?+/–) 15...Bc8+= 16.Qf4 Qf4 17.ef4 Rb8 18.Rab1 (18.Bd4 a6+/–) 18...Nh5 (18...Nd7 19.Rfe1+=) 19.Be5 (19.g3 Nf6+/–) 19...Rb1+= 20.Nb1 Bf6 (20...f6 21.Bb5 fe5 22.Be8 Nf4 23.Re1+/–) 21.Bb5 (21.Bf6 Nf6 22.Nd2 Nh5+/–) 21...Re7 22.Bd6 (22.Nc3 Be5 23.fe5 Nf4+= (< 23...Re5 24.f4 Re6 25.Nd5+/–)) 22...Re6= 23.Bc7 Re7 24.Bd8 Re4 25.Bf6 Nf6 26.g3 Re7 (26...a6 27.Bd3 Re6 28.Nd2+=) 27.c3 (27.Rc1 Bb7+=) 27...h6 (27...Bf5 28.c4=) 28.Kg2 (28.Bd3 Bh3 29.Rc1 Nd7+=) 28...Bb7 29.f3 a6 30.Ba4 Nd7 (30...Bc8 31.Rf2=). SuperForte5 – KnightStalker, 1993.

5.Nf3 e4

6.Bb5 Bd7 7.Be5 Qb6 8.Bd7 Nbd7 =+.

6.Nd4 a6 7.c4 dc4 (7...Be7 8.Nc3=) 8.Bc4 b5 (8...Bg4 9.Qa4 Qd7 10.Qd7 Nbd7 11.d3=) 9.Bb3 Qd8 (9...Bg4 10.f3 ef3 11.gf3=) 10.Qc2 Bb7 11.0–0 Bd6 12.Nc3 (12.d3 ed3 13.Qd3 c5 14.bc5 Bc5+=) 12...Be5 (12...c5 13.bc5 Bc5 14.Ncb5+/–) 13.a4 ba4 14.Ba4 Kf8 15.Nf5 Qc8 16.Ng3 (16.Nd4 Qd8=) 16...Qe6 (16...c5 17.bc5 Qc5 18.Ba3 Qa3 19.Ra3 Bg3 20.fg3+–) 17.Rfb1 (17.d4 ed3 18.Qd3 Nc6+=) 17...h5 (17...Qd6 18.Nce2+=) 18.Nce2 (18.d4 ed3 19.Qd3 h4+=) 18...Nbd7 (18...h4!? 19.Bb3 Bd5 20.Bd5 Qd5+/–) 19.Be5 Qe5 20.Bd7 Nd7 21.Ra5 Bd5 22.Nc3 c6 23.Nd5 cd5+/– 24.Qc6 Qe8 25.Qd5+– 1–0. Nolimal,Milan – Roblek,E, SLO–ch3 sf corr, 1995.

6.Nd4 a6 7.c4 dc4 8.Bc4 b5 9.Be2 Nbd7 10.Nf5 Qd5 11.Ng3 Ne5 12.0–0 Bb7 13.Nc3 Qe6 14.Qc2 Nc4 15.a4 Bb4 16.ab5 a5 (16...Nb2 17.ba6 (17.Qb2?! a5=) 17...Ba6 18.Ba6 Ra6 19.Ra6 Qa6 20.Qb2+/–) 17.Bc1 (17.Nge4!? Ne4 18.Bc4 Qc4 19.d3 Qc3 20.Bc3 Nc3 21.e4=) 17...Nd6 18.Na4 0–0 19.Ba3 Bd5 20.Rfb1 (worse is 20.Qc7 Rfc8 21.Qb6 Ba3 22.Ra3 Rcb8+=) 20...Ba3 21.Ra3 Nd7 22.Rc3 (22.Qc7? Rfc8 23.Bg4 Rc7 24.Be6 Be6–+) 22...Nb6 23.Rc7 Ndc4 24.Nb6 Nb6 25.Qc5 Rfc8 26.Bg4 Qg4 27.Qb6 a4 28.h3 Qg5 29.Rc8 Rc8 30.Qd4 a3 31.b6 a2 32.Ra1 Qf6? 33.Qf6+– gf6 34.Ne2?? Rb8= 35.Nc3 Rb6 36.Kh2 Be6 37.Kg3 Rb2–/+ 38.Na2? Ba2–+ 39.Rc1 Be6 40.Rd1 Bb3 41.Rc1 Rd2 42.Rb1 Be6 43.Rb4 f5 44.f3 Re2 45.Rb8 Kg7 0–1. Ehrlich,Hans Georg (1865) – Grotenhuis,Gerald (1910), Verbandsliga Muensterland, 2006.

6.Nd4 a6 7.Be2 a5 =.

6.Nd4 Nc6 7.Nb5 Qe7 8.Bf6 gf6 9.d3 Be6 10.de4 de4 11.N5c3 Rd8 12.Qe2 =.

6.Nd4 Nc6 7.c4 dc4 8.Bc4 (8.Qa4 Nd5 9.Nc6 Nb6 10.Qb5 bc6 11.Qe5 Qe5 12.Be5=) 8...Be7 (8...Ne5 9.Nb5 Qe7 10.Be5 Qe5 11.d4 ed3 12.Qd3=) 9.Qa4+= 0–0 10.Nc6 bc6 11.Qa5 (11.Bd4 Nd5 12.Nc3= –0.03) 11...Ng4 12.h3 Bf6 13.hg4 Bb2 14.Qh5 Threatening mate: Qxh7 14...h6 15.Ra2 Be5 16.g5 a5 17.gh6 g6 18.h7 Kh8 19.Qd1 ab4 20.ab4 Ra2 21.Ba2 Qb4 22.Qb3 (22.Qc2 Ba6 23.f4 Bg7=) 22...Qa5 23.Qc2 Ba6 24.Bc4 (24.Qe4 Qa2 25.Qe5 f6–+) 24...Bc4 25.Qc4 Qd5 26.Qc1 Ra8 27.Nc3 Qd3 28.Rh4 f6 29.Rg4 g5–+ 30.f3 ef3 31.gf3 Qh7 32.Ke2 Qh2 33.Kd3 Rd8 34.Kc2 Bc3 35.Kc3 Qe5 36.d4 Qa5 37.Kd3 Rb8 38.Rg2+= Qa6 39.Kc3 c5 40.dc5 Qa5 41.Kd3 Rb3 42.Ke2 Qb4 43.Qh1 Kg7 44.f4 Qc5 45.Qg1 Qd5 46.Kf2 Rb2 47.Kg3 Qg2 48.Qg2 Rg2 49.Kg2 c5 (49...c5 50.f5 g4–+) 0–1. Bonetti,Shane – Skonieczna,Mrs. Barbara (2280), MDK Malbork, 2007.

6.Nd4 Nc6 7.d3 Nd4 8.Bd4 Be7 9.Nc3 0–0 10.Be2 a5 11.0–0 Rd8 12.b5 Be6 13.Qd2 Rac8 14.h3 b6 15.f4 ef3 16.Bf3 Nd7 17.Ne2 Re8 18.Nf4 Bf6 19.Qc3 Rcd8 20.Rae1 Bd4 21.Qd4 Can d5 get defended? 21...Ne5 22.e4 Bd7 23.Nd5 (worse is 23.Qd5 Qa3 (23...Nf3?! 24.Rf3 Qa3 25.Nh5+=) 24.Be2 Bh3–+) 23...Bb5 24.Qc3 Bc6 25.d4 Nf3 26.Qf3 Bd5 27.ed5 f6 28.c4 Kf8 29.Qc3 Re1 30.Re1 (worse is 30.Qe1 c6+=) 30...Re8 31.Re8 Ke8 32.Qf3 ½–½. Rooijen Van,Peter (1655) – Korzh,Leonty (1970), RB–2009–0–00073, 2009.

6.Nd4 Nc6 7.d3 Nd4 8.Bd4 Be7 9.Nd2 0–0 10.c4 (10.de4 Ne4 11.Bd3 Qg6=) 10...Bf5 11.de4 de4 12.c5 Qd7 13.Bc4 Rad8 (13...b5 14.Bb3+=) 14.0–0= Nd5 15.f3 Bg5 16.Bd5 Qd5 17.h4 Be7 (17...Bh4? 18.fe4 Be4 19.Qg4+–) 18.fe4 Be4 19.Ne4 Qe4 20.Rf4 Qd5 21.Qg4 f6 22.Raf1 Qd7 23.Qf3 Qd5 24.Qg4 Qd7 25.Qe2 Qe6 26.h5 h6 27.Qf3 c6 28.Rf5 Rd7 29.a4 Bd8 30.b5 Bc7 31.g3 (31.Qg4 Rd5=) 31...a6 (31...Kh8 32.Rf2+=) 32.b6 Bb8 33.Rf2 Rdf7 34.Kg2 Qc4 35.a5 Rd8 (35...Qa4 36.Qg4 Be5 37.Qh4+=) 36.Kh3 Qe6 ½–½. Wantoch_Rekowski,Jacek (2245) – Almarza Mato,Carlos (2175), corr WS/M/186 ICCF, 2008.

6.Nd4 Be7 7.Nb5 Qd8 8.Be5 Na6 9.c4 c6 10.Nd4 Nc7 11.Be2 0–0 12.0–0 a5 13.c5 (13.b5!? c5 14.Nc2+=) 13...ab4–/+ 14.Qb3 (14.Qc2 Nd7 15.Bd6 Bd6 16.cd6 Ne8–+) 14...ba3 (better is 14...Bc5!? 15.ab4 Ra1 16.bc5 Nce8–+) 15.Ra3–/+ Ra3 16.Na3? (better is 16.Qa3!? Nd7 17.Bd6–/+) 16...Bc5 17.Rc1 Bd6 18.Bd6 Qd6 19.f4 (19.d3 Ne6 20.Nf5 Nc5 21.Nd6 Nb3–+) 19...ef3! 20.Bf3 (20.Nf3 Bg4 Combination; 20.Bf3 Ng4 Combination; 20.gf3 Bd7 Combination) 20...Re8 21.Qb6?? (21.Qd3 Ne6 22.Ne6 Qe6–+) 21...Ne6 (better is 21...Qa3 22.Rf1 Na6–+) 22.Rc3 Nd4 23.Qd4 Qe5 24.Qa4 h6 25.Nc2 Ne4 26.Be4 Qe4 27.Qa1 h5 28.d3 Qg6 29.d4 (29.Qe1 Bf5 30.Qf1 c5–+) 29...h4 30.Ne1 h3 31.g3 Qe4 32.Qd1 Bg4 33.Qd2 Re7 34.Nd3? Qe3 (34...Qe3 35.Qe3 Re3–+) 0–1. Levin,Anatoly – Abbasov,Farid (2440), Internet Section, 2004.

6.Nd4 Be7 7.c4 dc4 8.Bc4 0–0 9.Nc3 a5 10.b5 c5 11.Nde2 Nbd7 (better is 11...Be6 12.Be6 Qe6=) 12.0–0 (better is 12.Ng3!? Ne5 13.Nce4 Ne4 14.Ne4=) 12...Ne5–/+ 13.Ba2 Rd8 14.Bc1 (14.Qb1 Nd3–/+ (14...Qd2? 15.Rd1+–)) 14...Be6 Black plans c4 (14...Bg4 15.Qa4 Be2 16.Ne2–/+) 15.Qc2 (15.Ng3 Nd3–/+) 15...Nd3 16.Bb2 c4 17.Nd4 Ng4 (17...Rac8 18.f3–/+) 18.g3 Nb2 (18...f5 19.Ne4 fe4 20.Ne6 Qe6 21.Bc4=) 19.Qb2 f5 20.a4 (20.f3!? ef3 21.Nf3–/+) 20...Bf6–/+ 21.Nce2 (21.Ne6 Qe6 22.f3 ef3 23.Rf3 Rd3–/+) 21...Ne5–+ 22.Kh1 (22.Qc2!? Rac8 23.Rad1–/+) 22...Nf3 23.Rac1 Bd4 24.ed4 Bd5 0–1. Stasiak,Wiktor – McWade,Patrick, 3rd Webchess Open Tournament prel., 2008.

6.Nd4 Be7 7.c4 Bg4 8.Be2 Be2 9.Qe2 Qe5 10.Nc3 dc4 11.Qc4 c6 12.f4 ef3 (12...Qh5 13.b5=) 13.Nf3+= Qf5 14.0–0 Nbd7 15.Rac1 Nb6 16.Qe2 0–0 17.d3 Rad8 18.e4 Qd7 19.d4 Qg4 20.e5 (20.Rce1 Rfe8=) 20...Nfd5 21.h3 Nc3 22.Rc3 (22.hg4?? Ne2 23.Kf2 Nc1 24.Bc1 Rd5–+; 22.Bc3?! Qe6=) 22...Qg6 23.Qd3 Qd3 24.Rd3 Nc4 25.Bc1 Rd5 26.Rfd1 (26.Bf4 b5=) 26...Rfd8+= 27.Kf2 h6 (27...a5 28.Rc3 Ne5 29.Ne5 Re5 30.de5 Rd1 31.ba5=) 28.g3 a5 29.ba5 Ra5+= 30.Rb3 b5 31.Rdd3 Rda8 32.d5 Bc5 33.Ke2 cd5 34.Rd5 Ba3 35.Ba3 Na3 36.Nd4 Increasing the pressure on the isolated pawn on b5 36...Nc4 37.Kd3 Nb6 38.Rdb5 Nd7+= 39.Ra5 Ra5 40.Rb5 Ra3 41.Nb3 Ne5–/+ 42.Ke4 Nd7 43.Kd5 Kh7 44.Rb4 Ra7 45.Nd4 Nf6 46.Ke5 Kg6 47.g4 Re7–+ 48.Kd6 Re4 49.Kc5 h5 50.gh5–/+ Nh5 0–1. Fournier,Frederic – COMP ChessGenius 3.0, France (FRA), 1998.

6.Be5 Qd8 7.Ng1 (7.Nd4 a5=) 7...Nbd7=+ 8.Bb2 Bd6 9.c4 c6 (9...dc4 10.Bc4 Ne5 11.Be5 Be5 12.Ra2–/+) 10.c5 Bb8 11.Be2 0–0 12.f3 Nh5 13.Kf1 Qh4 14.Qe1?? (better is 14.Nh3–/+) 14...Bg3!–+ 15.Qd1 Bh2 16.Rh2 Qh2 17.fe4 Ng3 18.Kf2 Ne4 19.Kf1 Qh4 20.Qe1 Ng3 21.Kf2 Nf6 22.Nc3 Nfe4 23.Ne4 Ne4 24.Kf1 Ng3 25.Kf2 Bf5 26.Nf3 Ne4 27.Kg1 Qe1 28.Re1 Bg4 29.Ne5 Be2 30.Re2 Rae8?? 31.Nd7–/+ Re6 32.Nf8 Kf8 33.Bc3 f6 34.Bd4–/+ Ke7 35.Kf1? Ng3–+ 36.Kf2 Ne2 37.Ke2 Re4 38.g3 h5 39.Kf3 Ke6 40.d3 Rd4! 41.ed4 g5 42.Ke3 Kf5 43.Kf3 h4 44.gh4 gh4 45.Kg2 Kg4 46.Kh2 Kf3 47.Kh3 Ke3 48.Kh4 Kd3 49.Kg4 Kd4 50.Kf5 Ke3 51.Kf6 d4 52.Ke6 d3 53.Kd6 d2 54.Kc7 d1Q 55.Kb7 Qa4 56.Kc7 Kd4 57.Kd6 a6 0–1. Djakov,Joao – Marginet,Ricardo Ernesto (2090), Internet Section, 2004.

6.Be5 Qe7 7.Bf6 Qf6 8.Nd4 Bd6 9.c4 (better is 9.Nc3!? c6 10.d3=+) 9...Nc6–/+ 10.Nc2 dc4 11.Nc3 (11.Bc4 Be5 12.Ra2 Qg6–+) 11...Qg6–+ 12.g3 (12.Nd4 Nd4 13.ed4 0–0–+) 12...Ne5 13.Nd4 Bg4 14.Qc2 c5 (14...Nd3 15.Bd3 cd3 16.Qa4 c6 17.h3–+) 15.Ndb5?? (better is 15.bc5 Bc5 16.h3 Bd4 17.hg4 Nf3 18.Ke2 Bc3 19.Qa4 Kf8 20.dc3 Qg4 21.Bg2–+) 15…Nf3 (16.Kd1 Nd4 17.Be2 Nc2 18.Kc2 Be2 19.Ne2 cb4 20.ab4 a6–+) 0–1. wlittle (2165) – neric (2000), net–chess.com, 2004.

6.Ne5 a5 7.b5 Nbd7 8.d4 (8.f4 Be7=+) 8...ed3 (8...Be7 9.Nd7 Bd7 10.c4=+) 9.Nd7= Bd7 10.Bd3 Be7 11.0–0 Ng4 12.g3 Ne5 13.Be5 Qe5 14.Nd2 0–0 15.Nf3 Qc3 16.a4 (16.Qd2 Qf6 17.Nd4 c5 18.bc6 bc6=+) 16...Rfd8 (16...Rae8 17.Nd4 Bf6 18.Qh5+=) 17.Qe2 (17.Nd4 Re8=+) 17...Bg4 18.e4 (18.Qd2 Qd2 19.Nd2 Bb4=+) 18...Qf6–/+ 19.Kg2 Bf3 (19...d4!?–/+) 20.Qf3= Qf3 21.Kf3 d4 22.Rfe1 (22.Rad1 Re8=) 22...c5 (22...Bb4 23.Red1=) 23.e5 b6 (23...Rac8 24.Rad1+=) 24.Rad1 g6 25.e6 Rd6 26.Bc4 fe6= 27.Re6 Re6 28.Re1 Rf8=+ 29.Kg2 Rff6 30.Re6 Re6 31.Be6 Kg7 32.Kf3 Kf6 33.Bg8 h6 34.Ke4 Kg5 35.f4 Kf6 36.Kd3 Kg7 37.Bd5 Bf6 38.g4 Kf8 39.f5 gf5 40.gf5 Bg7 41.Kc4 Ke7 42.Be4 Kd6 43.Bd3 h5 44.Be2 Ke5 45.Bd3 Kd6 46.Be2 Ke5 47.Bd3 ½–½. SuperForte5 – KnightStalker, 1994.

6.Ne5 a6 7.d3 (7.c4 Be7=) 7...Nc6 8.Nc6 Qc6 9.Be2 Be7 10.0–0 0–0 11.f3 ef3 (11...ed3 12.Bd3 a5 13.b5=+) 12.Bf3 Qe8 (12...a5 13.Qd2=) 13.Nd2 (13.Bd4 Bd6=) 13...Be6 (13...a5 14.e4=) 14.e4 de4 15.Ne4 Ne4 16.Be4 (< 16.de4 c5=) 16...Qd8? (better is 16...c6!?+=) 17.Qh5+– h6 18.Rf3 (better is 18.Bb7 Ra7 19.Be4+–) 18...f6?? (better is 18...c6+/–) 19.Rg3 (19.Qg6 Re8 20.Rg3 Bf8 21.Bf6 Qf6 22.Qf6 Kh8+–) 19...Kh8?? (19...Rf7 20.Qh6 Bd6 21.Rg7 Rg7 22.Bf6 Qd7 23.Bg7 Qg7 24.Qe6 Qf7 25.Qf7 Kf7 26.Bb7 Ra7 27.Bd5 Ke7+–) 20.Qg6 (20...Bc5 21.Kh1 Qd3 22.Qg7#) 1–0. amikhlin (2345) – chadpalmer (2020), net–chess.com, 2002.

6.Ne5 Nc6 7.Nc6 bc6 8.f3 Rg8 9.fe4 Ne4 10.d3 Ng5 11.Be2 c5 12.bc5 Qh6 13.Nc3 Bc5 14.Nd5 Qd6 15.e4 Rb8 16.Qc1 f5 17.d4 Rb2 18.Qb2 fe4 19.Qb8 Qd5 20.Qc8 Kf7 21.Qc7 Kg6 22.dc5 Ne6 23.Qd6 Rd8 24.Qd5 Rd5 25.Bc4 Rc5 26.Be6 Re5 27.Bb3 e3 28.Ke2 Kf5 29.Raf1 Ke4 30.Rf7 Rg5 31.g3 Rf5 32.Ra7 Rf2 33.Ke1 g5 34.Rh7 Rd2 35.Re7 Kf3 36.Rf1 Kg4 37.Be6 Kh5 38.g4 Kg6 39.Rf8 Rf2 40.Bf5 Rf5 41.Rf5 e2 42.Ke2 Kh6 43.Rf6# 1–0. Machete99 – Saevita, ICC, 2002.

6.Ne5 Be7 7.c4 0–0 8.cd5 Nd5 9.d3 Bh4 10.Nc4 Qg6 11.de4 Qe4 12.Nbd2 Qe7 13.Qf3 Rd8 14.Ne4 (14.Rd1 Bf6+=) 14...f5= 15.Nc3 (15.Ng3 f4 16.Rd1 c6= (< 16...fg3 17.hg3 Be6 18.gh4+/–)) 15...Nc3 16.Bc3 Bf6 17.Bf6 Qf6 18.Rc1 Nc6 19.b5 Ne7 20.Qf4 Be6 21.Qe5 (< 21.Qc7 Rac8 22.Qa5 Nd5–/+) 21...Qe5 22.Ne5 Rac8 23.Bd3 Rd5 24.f4 c5 25.Bc4 Rd6 26.Ke2 (26.Be6 Re6 27.Kf2 Nd5+=) 26...Ng6 (26...Bc4 27.Nc4 Rdd8 28.Rhd1+=) 27.g4 Ne5 28.fe5 Bc4 29.Rc4 Re6 30.gf5 Re5 31.e4 (31.Rf1 Rce8 32.Rf3 Kf7+=) 31...g6= 32.fg6 hg6 33.Ke3 (33.h4 Kg7+=) 33...b6 (33...Rh5 34.Ra4+=) 34.h4 (34.Rg1 Kg7=) 34...Kg7= 35.Ra4 Rc7 36.Rc4 Rh5 37.Rc2 Rd7 38.Rg2 c4 39.Rg5 Rd3 40.Kf4 Rg5 41.hg5 Ra3 42.Rc1 c3 43.Ke5 Rb3 44.Kd6 Rb5 ½–½. mrkt – Seneca, myChess.de, 2005.

6.Ne5 Be7 7.Be2 0–0 (7...a5 8.0–0+=) 8.d3 (8.f4 ef3 9.Nf3 a5+=) 8...Nbd7 9.f4 (better is 9.Nd7!? Bd7 10.0–0+=) 9...ef3–+ 10.Nf3 Ng4 11.h3?? (11.Qd2 Re8 12.e4 de4 13.de4–/+) 11...Nge5 (better is 11...Ne3 12.Qc1 Qg3 13.Kd2 Ng2–+) 12.Nbd2 (12.0–0!?+=) 12...Bf6–/+ 13.d4 (13.Bd4 Re8–/+) 13...Nf3 14.Nf3 Re8 15.Qd3 c6 16.0–0–0? Nb6 17.g4 Nc4–+ 18.Qb3?? Re3 19.Bd3 Qf4 20.Nd2 Nb2 21.Qb2 Bd4 22.Qb1 Qh6 23.b5 Rh3 24.Rh3 Qh3 25.Qb3 Bg4 26.Rf1 Re8 27.c3 Qd3 28.Qc2 Qc3 29.Qc3 Bc3 (29...Bc3 30.bc6 bc6–+) 0–1. Rush,Bradley – Jas,Marcin, OP–2012–0–02193, 2012.

6.Nd4 a5

7.ba5 Ra5 8.Bc3 Ra8 9.Nb5 Qd8 10.Bf6 gf6 11.c4 dc4 12.Bc4= Nd7 =.

7.ba5 Ra5 8.c4 Bd7 (8...Nbd7 9.cd5 Nd5 10.d3 ed3 11.Qd3=) 9.Nc3= c6 10.cd5 cd5 11.Qb3 Bc6 (11...Qc7 12.Rc1 Rc5 13.Ndb5+=) 12.Be2 (12.d3 Qc7+=) 12...Nbd7 (12...Na6 13.0–0+=) 13.Ncb5 Bb5 14.Nb5 (14.Bb5 Qb6+=) 14...Qb6 15.a4 (15.Rb1 Be7=) 15...Be7 (15...Nc5 16.Qc2+=) 16.0–0 (16.Bc3 Ra8+=) 16...Nc5 17.Qc2 0–0 18.Bd4 (18.Bc3 Raa8+=) 18...Nfd7 (18...Rfa8 19.Rac1 Nfd7 20.Nc3=) 19.Rfb1 (19.Bc3 Ra6+=) 19...Rc8 (19...Rfa8 20.Nc3 Qe6 21.d3=) 20.Bc3 Raa8 21.Bg4 (21.a5 Qg6=) 21...Qd8 (21...Qg6 2.Qd1+=) 22.Qd1 (22.f3 g6=) 22...g6 (22...Nd3 23.Nd4 Rc7 24.Be2=) 23.f3 (23.d4!? ed3 24.Bd4=) 23...f5+= 24.Bh3 Nb6 25.fe4 Ne4 26.Bd4 Bf6 27.g4 Kh8 28.Bf6 Qf6+= 29.gf5 gf5 30.d3?? Qg5–+ 31.Kf1 Qe3 32.de4 Qh3 33.Ke1 Qh4 34.Kf1 Qf4 35.Ke1 Qe4 36.Qe2 Ra4 37.Nd6 Qe2 38.Ke2 Ra1 39.Ra1 Rf8 40.Nb7 f4 41.Rd1 Rc8 (41...Rf5!? 42.Nd6 Rh5 43.Rd4–+) ½–½. Degen,Magda – Leoni,L, corr DDR–ITA, 1984.

7.ba5 Ra5 8.Be2 Be7 9.Nc3 0–0 10.d3 Rd8 11.Qd2 b6 12.f3 ed3 +=.

7.ba5 Ra5 8.Be2 Be7 9.Nc3 Nc6 A) 10.Ncb5 Qd7 11.Nc6 Qc6 12.a4 (12.Nd4+= Qd7+=) 12...0–0=; B) 10.Nb3 Ra8 11.d3 Na7 12.de4 de4=.

7.ba5 Be7 8.Bb5 c6 9.Be2 =+.

7.ba5 Be7 8.Nb5 Qd8 9.Be5 Na6 10.Be2 0–0 11.0–0 c6 12.Nd4= Qa5 =.

7.b5 (--> 4.Nf3 e4 5.Nd4 a5 6.b5 Nf6 7.e3).

7.Nb5 Qd8 8.ba5 c6 9.Nd4 Be7 10.c4 0–0 11.Nc3 c5 (11...dc4 12.Qc2 Qa5 13.Ne4+=) 12.Nb3= d4 13.Nb5 d3 14.f3 Bf5 15.Nc3 Nc6 Increasing the pressure on the isolated pawn on a5 (15...Be6 16.Rb1+=) 16.Ne4 (16.fe4!? Be6 17.Nd5 Ne4 18.Bd3 Bd5 19.0–0 Bc4 20.Bc4 Na5 21.Na5 Ra5 22.Qc2+=) 16...Ne4+= (worse is 16...Be4 17.fe4 Qd6 18.Qb1+=) 17.fe4 Be4 18.Qg4 Threatening mate: Qxg7 18...Bg6 19.g3 (19.Bc3 Ra6=) 19...Bf6–/+ 20.Bf6 (20.Rb1 Bb2 21.Rb2 Qf6–/+) 20...Qf6 21.Rb1 Ne5 22.Qf4 Qc6 23.Qe5 (23.Rg1 Nf3 24.Kf2 Ng1 25.Kg1 Rfe8–/+) 23...Qh1–+ 24.Nc5 Ra5 25.Qe7? Qh2 (25...Qh2 26.Ne4 Rf5–+; 25...Ra3?! 26.Qb7 Qh2 27.Qg2–+) 0–1. Calua Alcires – Rossell, 1992. (=1.Nf3 Nf6 2.b4 d5 3.e3 Qd6 4.a3 e5 5.Bb2 e4 6.Nd4 a5)

7.Nb5 Qd8 8.ba5 Nbd7 9.Be2 Ra5 10.0–0 Be7 11.N1c3 0–0 12.Nd4 Nb6 =.

7.Nb5 Qd8 8.Bf6 gf6 9.ba5 Ra5 10.c4 dc4 11.Bc4 Nd7 12.d4 Nb6 =.

7.c4 ab4 8.c5= Qc5 9.ab4.

7.c4 ab4 8.c5= Qd8 9.ab4 Ra1 10.Ba1 c6 11.Be2 (11.Qa4 Be7=) 11...g6 (11...b6 12.Qc2+=) 12.b5 (12.Nc3!?+=) 12...Bc5= 13.bc6 (13.Qc2 Be7=) 13...bc6+= 14.Nc6 Nc6 15.Qc2 Qd6 Black intends d4 16.Bf6 0–0 17.Bg5 (17.0–0!?=) 17...d4 (17...Ba6 18.Ba6 Nb4 19.Qa4–/+) 18.Bf4 (18.Qe4? Bf5 19.Qh4 Bb1–+) 18...Qe7 19.Bb5 (19.Qa4 Bb7–/+) 19...Nb4 20.Qa4 Bb7 (20...Ba6 21.Ba6 Ra8 22.Qb5 Ra6 23.0–0+=) 21.0–0 Nd5 (21...Ra8 22.Qb3–/+) 22.Bg3+= Ra8 Black gets strong initiative 23.Qb3 h5 (23...Ra5 24.Re1+=) 24.ed4 (24.Rc1 Bb6 25.Bc4 Rc8=) 24...Bd4+= 25.Qc4 (25.Bc4 Nb6–/+) 25...Bg7 26.h4 Rc8 27.Qe2 (27.Qb3 Qb4 28.Qb4 Nb4–/+) 27...Bf6 (27...Rc2 28.Ba6 Ba6 29.Qa6–/+) 28.d3+= Bh4 29.Bh4 (29.de4 Bg3 30.ed5 Bd6–/+) 29...Qh4 30.de4 (30.g3 Nf4 31.Qd2 Nh3 32.Kh2–+) 30...Nf4–+ 31.Qb2?? (31.Qf3 Be4! 32.g3 Bf3 33.gh4–+) 31...Be4 32.Rc1 (32.f3 Rc2 33.Qc2 Bc2–+) 32...Nh3! 33.Kh2 The mate threat is Rxc8 (33.gh3 Qg5 A double attack) 33...Nf2 (33...Rc1!? 34.Qc1 Nf4 35.Kg1 Bg2 36.f3 Qh1 37.Kf2 Qc1 38.Bc4–+) 34.Kg1 Rc1 (34...Rc1 35.Qc1 Qh1 36.Kf2 Qc1–+) 0–1. Mazzamuto – Martorelli, Palermo, 1981.

7.c4 ab4 8.c5= Qd8 9.ab4 Ra1 10.Ba1 Bd7 11.Qb3 (11.Be2 b6 12.Qc2 Be7=) 11...c6 12.Nc3 b6 (12...Be7 13.d3=) 13.Na4 bc5 14.Nc5 Bc5 (14...Qb6 15.d3=) 15.bc5 0–0 16.Qb6 Qb6 (16...Qe7!?=) 17.cb6+= Bc8 18.Nb3 Nfd7 19.Bd4 Ba6 20.Ba6 (20.Be2 Rc8 21.Na5 c5 22.Ba6 Na6=) 20...Na6= 21.b7 c5 (21...Rb8 22.Na5 c5 23.Bc3+=) 22.Bc3+= c4 23.Na5 Nac5 24.Ke2 Rb8 25.Rb1 Nb3 26.Rb2 (worse is 26.Nb3 Rb7 27.Nc5 Nc5 (27...Rb1?! 28.Nd7 Rg1 29.g3=) 28.Rb7 Nb7–+) 26...Ndc5 27.Be5 Rb7 28.Nb7 Nb7 29.f3 f6 30.Bc3 (30.Bg3 N7c5=) 30...N7c5 (30...Kf7 31.fe4 de4 32.Rc2=) 31.Rc2 (31.fe4 Ne4 32.Kd1 h6=) 31...ef3 32.gf3 (32.Kf3 Kf7=) 32...Nd3 33.Kf1 Kf7 (33...Nbc1 34.e4 de4 35.fe4+/–) 34.Ra2+= Nbc5 35.Ra7 White fights for the Initiative 35...Kg6 36.Rc7 Ne6 37.Rd7 Ng5 38.Ke2 (38.f4 Nf3+/–) 38...Ne6 39.f4 h6 (39...h5 40.Rd6 Nc7 41.Ba5+–) 40.Rd6 Kf7 (40...Nc7 41.Ba5 Ne8 42.Rd5+–) 41.f5+– Nec5 42.Rd5 Ke8 (42...Nc1 43.Kf3 N1d3 44.Bd4+–) 43.Rd4 Ne5 44.Rd6 Ncd3 45.Be5 Ne5 46.Re6 (46.Rb6 Kf7+–) 46...Kf7 47.Re5 (47.Rb6 g5+–) 47...fe5 48.Kf3 g5 49.fg6 Kg6 50.Ke4 Kf6 51.Kd5 Kf5 52.e4 Kf4 53.h3 h5 54.h4 (54.h4 Kg4 55.Ke5 Kh4 56.Kf4+–) 1–0. Gomez,Gustavo Daniel (2520) – Samraoui,Mekki (2520), Interzonal Team Tournament, 2000.

7.c4 dc4 8.b5 +=.

6.Nd4 Qb6

7.Ra2 a5 =.

7.Nb3 Bg4 8.Qc1 Nbd7 9.h3 Bh5 10.d4 (10.Bd4 Qe6=) 10...ed3 (10...Be7 11.c4=+) 11.Bd3= c5 12.bc5 Nc5 13.Nc5 Bc5 (< 13...Qc5 14.Bf6 gf6 15.Qb2+/–) 14.0–0 (14.Nd2 d4 15.ed4 Bd4=) 14...0–0 15.Nc3 Qe6 16.Ne2 (16.Nb5 Rac8=) 16...Be2 17.Be2 Ne4 18.Bd3 Rac8 19.Bd4 (19.c4 dc4 20.Bc4 Qg6=) 19...Bd4=+ 20.ed4 Qf6 21.Qb2 (21.Rb1 b6 22.Be4 de4=+) 21...b6 (better is 21...Nc5=+) 22.a4 (22.Be4 de4 23.Rae1 Rfe8=) 22...Nd2 (better is 22...Nc3!?–/+) 23.Rfd1 Nc4 24.Qb5 Rfd8 25.Be2 (25.c3 Rc6=) 25...Na5 (25...Qf4 26.Bf3 Qd6 27.Rac1=+) 26.Rac1 (26.Bd3 h6=+) 26...Rc3 27.Rd3 (27.Qb2 Rc7=+) 27...Rd3 (better is 27...Nc6!? 28.Re3 Re3 29.fe3 Qg5–/+) 28.Qd3 Qc6 29.Qb5 Qc3 30.Bf3 (30.Qd3 Qb4=+) 30...Qd4 (better is 30...Nc6!? 31.Bd5 Qd2–/+ (< 31...Nd4 32.Qc4=+)) 31.Rd1= Qc4 (31...Qc3 32.Rd5 Qa1 33.Kh2=) 32.Rd5+= Rc8 (32...Qc7 33.Be4+=) 33.Qd7 Rf8 (33...g6 34.Qa7 Qb4 35.c3 Rc3 36.Qb8 Kg7 37.Qe5 Kh6 38.Rd4 Rc1 39.Kh2 Qd4 40.Qd4+–) 34.Qa7 Qc2 35.Qb6 Nc4 36.Qb4 Nb2 37.a5 g6 38.a6 Nd3? 39.Qd4 Qc1 40.Kh2 Ne1 41.Be4 f5?? 42.Rd7 Qf4 43.g3 (43...Nf3 44.Bf3 Qd4 45.Rd4+–; 43.Kh1 Qe5 44.Bd5 Rf7 45.Qe5 h5 46.Rd8 Kh7 47.Qh8#) 1–0. Schulze,Harald (2115) – Fischer,Markus (2165), RLNO_SWNbg1–EulenRgb1, 2002.

7.Nb3 Bg4 8.Be2 Be2 9.Qe2 Nbd7 10.0–0 (10.Bd4 Qc6 11.Na5 Qc2 12.Bf6 b6–/+) 10...c6 (10...Bd6 11.Bd4 Qc6 12.Nc3+=) 11.d3 (11.Bd4 c5 12.bc5 Bc5 13.Nc5 Nc5+=) 11...Qc7 (11...Bd6 12.de4 Qc7 13.ed5 Bh2 14.Kh1+=) 12.N1d2 (12.de4 Bd6 13.ed5 cd5+=) 12...Be7 (12...Bd6 13.f4=) 13.h3 (13.de4 Bd6 14.ed5 Bh2 15.Kh1 Nd5+/–) 13...0–0 14.c4 (14.de4 Ne4 15.Ne4 de4=) 14...ed3 (14...Ne5 15.de4 Ne4 16.cd5 cd5 17.Rac1+=) 15.Qd3 Rfe8 (15...dc4 16.Qc4 Rad8 17.Rfd1=) 16.Rac1 (16.cd5 Nd5 17.Rfd1 Rad8=) 16...dc4 17.Qc4 Bd6 (17...Ne5 18.Be5 Qe5 19.Nf3=) 18.Rfd1 Bh2 19.Kf1 (19.Kh1 Be5 20.Bd4 Nb6=) 19...Be5 20.Be5 Ne5 21.Qc2 (21.Qd4 Red8 22.Qf4 Nd5=) 21...Rad8 22.Nd4 Rd5 23.N2f3 (23.b5 Qd7=) 23...Red8 (23...Nf3 24.Nf3 Qd7 25.Kg1=) 24.Ne5 (24.Kg1 Nf3 25.Nf3 Qb6=) 24...Qe5 25.Nf3 (25.Kg1 Ne4=) 25...Qe6 (25...Qd6 26.Rd5 Nd5 27.Qc5=) 26.Rd4 (26.Nd4 Qe7=) ½–½. St_Jean,Benoit (1665) – Newman,Nelson (2025), WC.2005.P.00012, 2002.

7.Nb3 Bg4 8.f3 ef3 9.gf3 Bf5 =.

7.Bb5 Bd7 8.Bd7 Nbd7 =.

7.c3 c5–/+ 8.Nb3 c4 9.Nd4 Nc6 10.Nc6 Qc6 11.Be2 Bd6 12.h3 0–0 13.a4 b5 14.ab5 Qb5 15.Na3 Qb6 16.Nc2 a5 17.Ba3 ab4 18.Bb4 Ra1 19.Qa1 Bb7 20.Bd6 Qd6 21.0–0 Nd7 22.Nd4 Nc5 23.Rb1 Ra8 24.Qb2 g6 25.Ra1 Ra1 26.Qa1 ½–½. Hal1958 – Casey, playchess.de, 2004.

7.Be2 a5 8.b5 (8.Nb5 c6 (worse is 8...ab4 9.Be5 Bd6 10.Nd6 cd6 11.ab4 Ra1 12.Ba1=) 9.ba5 Qa5+=) 8...c5+= 9.Nb3 a4 10.Nc1 c4 11.Nc3 Bd7 (11...Bd6 12.0–0+=) 12.d3 cd3 13.cd3 Bb5 14.0–0 Bc6 15.Qc2 Nbd7 16.de4 (16.Rd1 Be7+=) 16...de4 17.Nd1 (17.Rd1!?+=) 17...Bd6–/+ 18.Bf6 (18.Rb1 Qc7 19.h3 0–0–/+) 18...Nf6–+ 19.f3 (19.Nb2 Qc7 20.h3 0–0–+) 19...0–0 20.Kh1 (20.Qb2 Qb2 21.Nb2 Rae8–+) 20...Rac8 21.Qb2 (21.Qa2 Rfd8–+) 21...Qb2 22.Nb2 ef3 23.Bf3 (23.gf3 Rfe8 24.Nc4 Bb8–+) 23...Bf3 24.gf3 Rc2 25.Ncd3 Rc3 (25...b5 26.e4 Rfc8 27.e5 Be5 28.Ne5 Rb2 29.Rfb1–+) 26.Nb4 Bb4 (26...Re3?! 27.Nc4 Re6 28.Nd6 Rd6 29.Rad1–+) 27.ab4 a3 (27...b5 28.e4 Ra8 29.Kg2–+) 28.Nd1 Rb3 29.e4 (29.Rf2 Nd5–+) 29...Ra8 30.Rg1 (30.Kg2 Rb4 31.Nc3 Rb3–+) 30...b5 (30...Rf3 31.e5 Nd7 32.Re1–+) 31.e5 (31.Kg2 Rb4 32.Ra2 Rb3–+) 31...Nd5 32.Rg2 (32.Nf2 Rf3 (32...Rb4?! 33.Rgd1–+) 33.Ne4 Nb4–+) 32...Nb4 (32...Rb4?! 33.Rd2 Nf4 34.Ra3–+) 33.Rb2 (33.Re2–+) 33...Rb2 34.Nb2 Nc2 (34...Nc2 35.Ra2 b4–+) 0–1. Meisinger,Peter – Junker,Anders, internet, 2000.

6.Nd4 c6

7.c4 (--> 4.Nf3 e4 5.Nd4 Nf6 6.c4 c6 7.e3).

7.d3 a5 8.b5 Be7 9.bc6 Nc6 10.Nb5 Qb8 11.c4 dc4 12.de4 =.

7.d3 Bg4!? 8.Be2 Be2 9.Qe2 Nbd7 =.

7.d3 g6 8.de4+/– de4 9.Nb5! cb5 10.Qd6 Bd6 11.Bf6 0–0 12.Nc3 Nd7 13.Ne4 Nf6 14.Nd6 a6 15.Be2 Ra7 (15...Rd8 16.0–0–0+–) 16.0–0–0 (16.e4 Be6+–) 16...Be6 17.Bf3 b6 18.Rd4 Nd7 19.Bd5 (19.Rhd1 Ne5+–) 19...Bd5 20.Rd5 Nf6 21.Rd4 Rd7 (21...Rc7 22.e4+–) 22.Rhd1 Rfd8 (better is 22...Kg7+–) 23.Ne4 Rd4 24.Nf6 Kg7 25.Nh5! (25.ed4?! Kf6 26.Kb2 Rd5+/–) 25...gh5 26.Rd4 Ra8 27.Rd5 (27.Rd6 Rb8+–) 27...Kg6 (27...h4 28.Rd6+–) 28.Rd6 f6 29.Rb6 h4 30.Rd6 (30.e4 Kf7+–) 30...h5 31.Kd2 h3 32.gh3 a5 33.Rd5 ab4 34.ab4 Ra1 35.Rb5 Rh1 36.Rb8 Rh2 37.b5 Rh3 38.b6 (38…Rh1 39.Rg8 Kf5 40.b7+–) 1–0. Nadanian,Ashot (2345) – Lobzhanidze,Nikoloz, Yerevan op, 1996.

7.Be2 a5 8.ba5 Ra5 9.Bc3 =.

7.Be2 a5 8.ba5 Ra5 9.d3 Be7 10.Nb3 Ra4 11.Nc3 Ra7 12.de4 =.

7.Be2 a5 8.b5 c5 9.Nb3 a4 10.Nc1 Be7 11.0–0 0–0 12.f3 +=.

7.Be2 a5 8.c3 Nbd7 9.Nf5 Qe5 10.Nd4 Bd6 11.c4 (11.f4 ef3 12.Nf3 Qh5=+) 11...dc4 12.Bc4 Qg5 13.0–0 (better is 13.g3–/+) 13...Bh2!–+ (13...ab4?! 14.f4 Qh5 15.Qh5 Nh5 16.Nf5–/+) 14.Kh2 Ng4 15.Kg3?? (15.Kg1 Qh4 16.Bf7 Kd8 17.Qg4 Qg4 18.f3 ef3 19.Ne6 Ke7 20.Rf3–+) 15...Ne3 (16.Kh3 Qg2 17.Kh4 Qh2 18.Kg5 h6#) 0–1. chessH – ARMAGEDON_8, ChessWorld.net, 2003.

7.Be2 Qc7 8.d3 Bd6 9.de4 Ne4 (9...de4 10.Nc3 Bd7 11.Nb3=) 10.c4 dc4 11.Qc2 Nf6 12.Bc4 0–0 (12...b5 13.Bd3=) 13.Nc3 White intends b5 13...a5 14.b5 Nbd7 (14...Rd8 15.Ne4 Ne4 16.Qe4+=) 15.Nf5 Be5 16.f4 Bc3 17.Qc3 Qb6 18.bc6 bc6 19.0–0 Rd8 (19...Re8 20.Rfd1+=) 20.Rab1 (20.Nd6 Rf8+/–) 20...Qc5 (20...Re8 21.Qd3 Qa7 22.Bd4+–) 21.Qd3 Qf8 22.Rbd1 (22.Rfd1 Bb7+–) 22...Re8 23.Rf3 (23.Nd6 Re7 24.Bd4+/–) 23...Nc5 (23...Rb8!? 24.Nh6! gh6 25.Rg3 Kh8 26.Qd7 Rb2+– (26...Bd7?? 27.Bf6 Qg7 28.Rg7 Re6 29.Be6 Rg8 30.Rf7 Rg7 31.Rf8)) 24.Nh6!+– Kh8 (24...gh6 25.Bf6 Deflection) 25.Nf7 Qf7 26.Bf7 Nd3 27.Bf6 (27.Rd3 Rf8 28.Bc4 Bf5+/–) 27...Rf8 28.Bc3 Rf7 29.Rd3 Bf5 30.Rd4 Rb7 (30...c5!? 31.Rc4 Rc8+–) 31.e4 Bg6 32.Rfd3 Rb1 (32...Be8 33.Rd8 Rd8 34.Rd8+–) 33.Kf2 Be8 34.Rd8 Rbb8 35.Rb8 Rb8 36.Ba5 Kg8 (36...c5 37.Rc3 Rb5 38.Bc7+–) 37.Bb4 Rb5 (37...Kf7 38.Ke3+–) 38.Rc3 (38.Rd8 Kf7 39.Rc8 Bd7 40.Rf8 Ke6 41.f5 Ke5+–) 38...Kf7 39.Ke3 h6 (39...Bd7 40.f5+–) 40.Rc4 (40.f5 h5+–) 40...Rh5 41.h3 Rb5 +–. Van Rooijen,Peter (1805) – Arnold,Lee (1840), IECC, 2001.

7.Be2 Be6 8.0–0 Be7 9.d3 (9.f3 0–0=) 9...Nbd7 (9...0–0 10.de4 de4 11.c4=) 10.Nd2 ed3 (10...Ne5 11.Ne6 Qe6 12.Nb3=) 11.cd3 (11.Ne6? de2 (11...Qe6?! 12.Bd3 0–0 13.c4=) 12.Ng7 Kf8 13.Qe2 Kg7–+) 11...Ne5 12.Ne6 (12.e4 de4 13.de4 Ng6+=) 12...Qe6 13.Be5 (13.e4 de4 14.de4 Rd8+=) 13...Qe5= 14.d4 Qc7 (14...Qe6 15.b5=) 15.Qc2 (15.b5 0–0+=) 15...Bd6= 16.f4 (16.Nf3 0–0=) 16...0–0+= 17.Bd3 Rae8 (17...a5 18.b5=) 18.Rf3 (18.Rae1 Qb6=) 18...Re7+= 19.Rh3 Increases the pressure on h7 19...g6 (19...h6 20.Qc3+=) 20.Rf1 (20.f5 Ng4 21.Nf1 Kg7+=) 20...Ng4 The backward pawn on e3 becomes a target (20...Rfe8 21.Rff3+=) 21.Rff3 Rfe8 The pressure on the backward pawn e3 grows (21...a5 22.Rhg3 f5 23.h3+=) 22.Nf1 f5 23.Rfg3 (23.Rhg3 Kf7=) 23...Qd7 24.Qd2 (24.Qc3 Qe6+=) 24...Nf6 (24...Qe6 25.Qc3+=) 25.Qd1 Ne4 (25...Qe6 26.Qc2 Ne4 27.Be4 Qe4 28.Qe4 Re4 29.Kf2+=) 26.Rf3 (26.Be4 Re4 27.Nd2 R4e6+=) 26...a5 Black gets the initiative 27.Qb3 (27.ba5 Qc7+=) 27...ab4–/+ 28.ab4 b5 (28...Ra8 29.Be4 fe4 30.Rf2–/+) 29.Be4 fe4 30.Rf2 Ra8 31.Qc3 Ree8 32.Rc2 (32.f5 gf5 33.Ng3 Rf8–/+) 32...Rec8 33.Nd2 Ra4 34.Rb2 (34.Qb2 Rca8–+) 34...Qe7 35.Qc2 Bb4 36.Nb3 Bd6 (36...Qf6 37.Rb1–+) 37.g4 (37.Ra2 c5 38.Ra4 ba4–+) 37...Rc4 38.Qg2 (38.Qd1 Qe6–+) 38...Ra8 39.f5 (39.g5 Rc3 40.Qg4 Rd3–+) 39...Qg5 (39...Rb4 40.Qd2–+) 40.fg6 (40.Nd2 Ra1 41.Nf1 Rc3–+) 40...hg6 41.Qe2 Rc3 42.Kf2 Rf8 43.Kg1 Rf3! 44.Rf3 (44.Qf3 ef3) 44...ef3 (44...Qg4?! 45.Qg2 Qg2 46.Kg2 ef3 47.Kf3–+) 45.Qf3 Re3 (45...Qe3?! 46.Qe3 Re3 47.Na5–+) 46.Qd1 Bb4 47.Kg2 (47.Nd2 Rd3 48.Qe2 Rd2 (48...Bd2?! 49.Qd3 Qe3 50.Qe3 Be3 51.Kf1–/+) 49.Rd2 Bd2–+) 47...Qh4 (better is 47...Qh6!? 48.Nc5 Qh3 49.Kf2–+) 48.Nd2 Qh3 49.Kh1 Bc3 50.Rc2 (50.Rb1–+) 50...Rd3 (better is 50...Bd4 51.Nf1 Rd3–+) 51.Qe2 Re3?? (51...Kf7 52.Rc1 Qe3 53.Qf1 Kg7 54.Re1 Qd4 55.Re7 Kh6 56.Ne4 Qe4 57.Re4 de4 58.Qf4 Kh7 59.Qe4=) 52.Rc3?? (52.Qd1 Bd4 53.Nf1–+) 52...Re2–+ Do you see the mate threat? (52...Rc3?! 53.Qe8 Kh7 54.Qf7 Kh6 55.Qf4 Kg7 56.Qc7 Kg8 57.Qd8 Kf7 58.Qd7 Kf6 59.Qd8 Ke6 60.Qe8 Kd6 61.Qd8 Ke6 62.Qe8 Kd6 63.Qd8 Ke6=) 53.Rh3 Rd2 54.Rc3 Rd4 (54...b4!? 55.Rc6 b3 56.Rg6 Kf7 57.Rb6–+) 55.Rc6 Kf7 (55...Rg4 56.h3 Rh4 57.Kg2–+) 56.Rc5 (56.g5!?–+) 56...b4 57.Rb5 Ke6 (57...g5 58.h3–+) 58.h3 (58.Rb6!? Ke5 59.Rg6 Re4–/+) 58...Kd6 (58...Ke5 59.Kg2–+) 59.Kg2 Kc6 (59...g5 60.Kf3–+) 60.Rb8 Kc5 61.Rc8 Kb5 62.Rb8 Ka4 (62...Kc4!? 63.Kf3 g5 64.Rc8 Kd3 65.Rb8–+) 63.Ra8 Kb3 64.Rg8 Kc2 65.Rg6 b3 (65...b3 66.Rc6 Rc4–+) 0–1. Maas,L – Daamen,Ferry, corr, 1984.

7.Be2 Be7 8.0–0 (8.Nc3 0–0 9.0–0 a5 10.ba5 Ra5 11.f3 b6 12.fe4=; 8.d3 a5 9.ba5 Ra5 10.Nd2 ed3 11.cd3 0–0 12.0–0=) 8...0–0 (8...a5 9.ba5 Ra5 10.d3 0–0 11.de4 de4 12.Nd2=) 9.c4 (9.f3 a5= 10.fe4 de4 11.ba5 Ra5 12.d3=) 9...Re8 (9...dc4 10.Bc4 b5 11.Ba2+= (11.Be2 a5 12.ba5+=) 11...Ng4 12.f4=) 10.Nc3 (10.f3 ef3 11.Nf3 dc4 12.Bc4 Be6 13.Be6 Qe6=) 10...Bf8 (10...dc4 11.Bc4 b5 12.Be2+=) 11.Qc2 (11.c5 Qe5+= 12.f3+=) 11...Bg4 (11...dc4 12.Bc4 b5 13.Be2=) 12.c5+= Qc7 13.f3 ef3 14.Bf3 Nbd7 15.Nce2 (15.Bg4 Ng4 16.Rf4 Ndf6=) 15...Ne5 16.Nf4 Bd7 17.Nf5 Bf5 18.Qf5 Qd7 19.Qg5 (19.Qc2 Nf3 20.Rf3 Ne4+=) 19...h6 (19...Nf3 20.gf3 (worse is 20.Rf3 Ne4 21.Qh5 Nd2–/+) 20...Be7 21.Rf2=) 20.Qg3+= Qc7 (20...b6 21.Be5 Re5 22.Nd3=) 21.Kh1 (21.Nh5 Nh7+/–) 21...Rac8 (21...Nf3 22.Qf3 Ne4 23.Qd1+=) 22.Nh5+= Nh5 23.Bh5 g6 24.Rf5?? (better is 24.Bg4 Ng4 25.Qg4+=) 24...Bg7–+ 25.Raf1 gf5 26.Rf5 Ng6 27.Rf7 Qf7 (27...Qf7 28.Kg1 Rf8–+) 0–1. Gutierrez,Marcelo – Barrionuevo,P (2285), LNA Copa Puma, 2007.

6.Nd4 Be7

7.Bb5 c6 8.Be2 0–0 =.

7.Bb5 c6 8.Be2 a5 =.

7.Nb5 Qd7 8.Be5 Bd8 9.N1c3 0–0 10.Nd4 Re8 11.Bf4 a6 12.Be2 Nc6 =.

7.Nb5 Qd7 8.Be5 Bd8 9.d4 Nc6 (9...a6 10.N5c3=) 10.Bf6 Bf6 11.c4 Ne7 (11...dc4 12.N5c3=) 12.cd5 0–0 13.N5c3 Nd5 14.Ne4 a5 15.Nf6 Nf6 16.b5 c5 17.bc6 (17.dc5 Qf5+/–) 17...Qc6 18.Nd2 Be6 19.Rc1 Qd6 20.Qa4 Rac8 21.Rc8 Rc8 22.Qa5 b6 23.Qb4 (23.Qa4 Rc1 24.Ke2 Qd8+=) 23...Rc1 24.Ke2 Qc6 25.f3?? (better is 25.e4 Ne4 26.f3 Nd2 27.Kd2–/+) 25...Nd5–+ 26.Qb2 Nc3 27.Kd3 Nd1 28.Qc1 Qc1 29.Ke2 Bc8 (29...Bd7 30.Nb3 Qc2 31.Ke1 Qb3 32.Bb5 Bb5 33.Kd2 Qd3 34.Kc1 Ba4 35.Rd1 Qc2) 30.Ne4 (30.Nb3 Qc2 31.Ke1 Ne3–+) 30...Ba6 31.Ke1 Ne3 32.Kf2 Nf1 (32...Nf1 33.Rf1 Qf1 34.Kg3 Qe1 35.Nf2 f5–+) 0–1. marekt – dolfan214, GameColony.com, 2002.

7.Nb5 Qd7 8.Be5 Bd8 9.Nd4 0–0 10.Be2 a5 (10...Re8 11.Bf4 Nc6 12.Nc6= Qc6=) 11.Nc3 Nc6 12.Nc6 Qc6 =.

7.Nc3 A) 7...0–0 8.Be2 a6 (8...c6 9.0–0 a5 10.ba5 Ra5 11.f3 b6 12.fe4 Ne4=; 8...Nc6 9.Ncb5 Qd7 10.Nc6 bc6 11.Nd4 a5 12.ba5= Ba6=) 9.0–0 Nc6 10.Nc6 Qc6 11.f3 Be6 12.Qe1 b5=; B) 7...a5 8.b5 a4 (8...0–0 9.Be2 a4 10.0–0 Qb6 11.f3 c5 12.bc6 Qb2=; 8...Bd7 9.Be2 0–0 10.0–0 Qe5 11.f4 Qd6 12.Rb1 a4=) 9.Be2 0–0 (9...Qb6 10.f3 Bd6 11.fe4 de4 12.0–0 Be5=) 10.f3 Qe5 11.0–0 Bc5 12.Na2= Bd6=; C) 7...c6 C1) 8.d3 0–0 (8...a5 9.b5 0–0 10.bc6 Nc6 11.Ncb5 Qc5 12.Be2 Bd7=; 8...b5 9.de4 de4 10.Na2 a5 11.c4 ab4 12.Nb4 Bd7=) 9.Qd2 Rd8 10.Be2 b6 11.0–0 a5 12.Rfb1= ab4+=; C2) 8.Ra2 a5 (8...0–0 9.Be2 a5 10.0–0 ab4 11.ab4 Ra2 12.Na2 Na6+=) 9.Be2 0–0 (9...b5 10.0–0 0–0 11.f3 Re8 12.fe4 de4=) 10.0–0 ab4 (10...b5 11.f3 Bd7 12.ba5 Ra5=) 11.ab4 Ra2 12.Na2+= Na6+=; C3) 8.Be2 0–0 (8...a5 9.Na4 Bd8 10.b5 c5 11.Nb3 b6 12.d3 ed3=) 9.0–0 a5 10.ba5 Bd8 (10...Ra5 11.f3 b6 12.fe4= Ne4=) 11.f4 Ba5 12.Nb3 Nbd7=.

7.c4 a5 A) 8.c5 A1) 8...Qd7 9.Be2 (9.Bb5 c6 10.Ba4 0–0 11.f3 Qc7 12.0–0= ab4+=) 9...0–0 10.0–0 ab4 11.ab4 Ra1 12.Ba1 b6=; A2) 8...Qd8 9.Be2 0–0 10.0–0 ab4 11.ab4 Ra1 12.Ba1 b6=; B) 8.Nb5 Qd8 (8...Qd7 9.cd5 0–0 10.Qc2 Nd5 11.Bc4 Na6 12.Qe4 c6=) 9.cd5 0–0 10.d3 ed3 11.Bd3 ab4 12.Qc2 Na6=.

7.c4 dc4 8.Bc4 a5 9.ba5 0–0 10.d3 c5 (10...Rd8 11.Nd2 ed3 12.Bd3= c5=) 11.Nb5 Qc6 12.0–0 Ra5 =.

7.c4 c6 8.Nc3 0–0 9.cd5 cd5 10.Be2 Nc6 11.Ncb5 Qb8 12.Rc1 Bd7 13.Nb3 a6 14.N5d4 Ne5 15.f4 ef3 16.Nf3 Nf3 17.Bf3 Ba4 18.Qc2 Qd6 19.Qd3 Exerts pressure on the isolated pawn 19...Bb5 20.Qf5 Rfd8 21.Be2 (21.Be5 Qd7 22.Qd7 Rd7 23.Bf6 Bf6+=) 21...Bd7 22.Qe5 Rac8 23.0–0 Qe5 24.Be5 Ne4 25.d3 Ng5 26.Nc5 Bc5 27.bc5 Bb5 28.Kf2 Ne6 29.d4 Be2 30.Ke2 Rc6 31.Rb1+/– Rd7 32.h4 f6 33.Bd6 Nd8 34.Rb2 b5 35.Ra1 Nb7 36.Bg3 Na5 37.Rb4 Re6= 38.a4 Nc6 39.Rb2 Nd4 40.Kf2 Nf5 The isolani on e3 becomes a target 41.ab5 ab5 42.Rb5 Ng3 43.Ra8 Kf7 44.Kg3 Re3 45.Kf2 Rc3 46.Rc8 d4 47.c6 Re7 48.Rd5 d3 49.c7 Rc2 50.Kf3 d2 51.Rcd8 Rec7 52.Rd2 R2c3 53.R2d3 h5 54.R8d7 Rd7 55.Rc3 Rd4 56.g3 Ke6 57.Rc5 Rd5 58.Rc7 g6 59.Rc4 Rd3 60.Kf4 Kd5 61.Rc7 Rd4 62.Kf3 Ke5 63.Rc5 Rd5 64.Rc4 Rd3 65.Kf2 Rd4 66.Rc3 Ke4 67.Re3 Kf5 68.Rf3 Ke5 69.Re3 Re4–/+ 70.Ra3 Ke6 71.Kf3 Kf5 72.Ra5 Re5 73.Ra4 Rb5 74.Rf4 Ke5 75.Re4 Kf5 76.Rf4 Ke6 77.Re4 Re5 78.Ra4 g5 79.Ra6 Kf5 80.hg5 fg5 81.Rh6 Ra5 82.Rb6 Ra3 83.Kg2 Ra2 84.Kg1 Kg4 85.Rb3 Rc2 86.Re3 Kh3 0–1. De Wild Propitus,Mark – Knecht,G (2120), London Classic FIDE Open, 2011.

7.d3 0–0 8.Nd2 (8.c4 dc4 9.de4 b5=) 8...c6 (8...a5 9.de4 ab4 10.ed5 ba3 11.Nb5=) 9.c4 Nbd7 (9...a5 10.c5 Qd8 11.de4 Ne4 12.Ne4 de4 13.Qc2=) 10.Nf5 (10.cd5 cd5 11.de4 de4+=) 10...Qe6= 11.Ne7 Qe7 12.Be2 (12.cd5 cd5 13.Rc1 b6+=) 12...Ne5 (12...Rd8 13.Qc2=) 13.Be5 (13.de4 dc4 (< 13...Ne4 14.Ne4 de4 15.Qd4+/–) 14.Bd4 Rd8=) 13...Qe5 14.f4? (better is 14.0–0!?=) 14...ef3–/+ 15.Nf3 Qe3 16.Qd2 Qd2 (16...Ng4 17.Qe3 Ne3 18.Kf2–/+) 17.Kd2 dc4 18.dc4 Bf5 19.Rhd1 Ne4 20.Ke1 Nc3 21.Rd2 Rfe8 22.Kf1?? Ne2–+ 23.Re2 Bd3 (24.Rae1 Re2 (24...Be2?! 25.Re2 Rad8 26.Kf2–+) 25.Re2 Bc4–+) 0–1. thotares – dimis283 (1750), internet, 2007.

7.Be2 0–0 8.0–0 A) 8...a5 9.b5 Qb6 10.Ra2 c5 (10...c6 11.bc6 bc6 12.Bc3 Na6=) 11.bc6 bc6 12.Bc3= Qc7=; B) 8...Nc6 9.f3 Nd4 10.Bd4 a5 11.b5 ef3 12.Rf3 c5=.

7.Be2 0–0 8.Nb5 Qd7 (8...Qd8 9.Be5 Ne8 10.0–0 Nc6 11.Bf4 Bf6 12.N5c3 d4=) 9.Be5 Ne8 10.Nd4 a5 11.b5 c5 12.bc6+= Nc6 +=.

7.Be2 0–0 8.Nc3 a6 (8...c6 9.0–0 a5 10.ba5 Ra5 11.f3 ef3 12.Rf3 b6=; 8...a5 9.b5 a4 10.f3 Qe5 11.0–0 Bc5 12.Na2= ef3=) 9.Nb3 Nc6 10.0–0 Ne5 11.f3 ef3 12.Bf3 Nfg4 +=.

7.Be2 0–0 8.c4 (8.f3 Nc6=) 8...dc4+= 9.Bc4 a6 (9...a5 10.b5+=) 10.Nc3 (10.d3 c5 11.bc5 Qc5=) 10...Bd7 (10...Nc6 11.Nc6 Qc6 12.Qb3+=) 11.Rc1 (11.Qc2 Bc6+=) 11...Nc6+= 12.Nc6 (12.Ncb5 ab5 13.Nb5 Bg4=) 12...Qc6 (12...Bc6!? 13.Qc2 Qd7+=) 13.Ne2= Qd6 (13...Qb6 14.d3=) 14.Ng3 (14.d3 Rfd8 15.de4 Ne4+=) 14...Rad8 (14...Rfd8 15.0–0=) 15.Bf6 (15.0–0=) 15...Bf6 (better is 15...Qf6!? 16.Ne4 Qb2=) 16.Ne4+/– Qe7 17.Nf6 Qf6 18.Be2 (18.d4 Qg5 19.Qf3 Bc6+/–) 18...c6 (18...Bc6!?+=) 19.d4+/– Qg6 20.Bf3 f5 (20...Rfe8 21.0–0+/–) 21.0–0 (21.Qc2 Be6+/–) 21...f4 (21...Be6 22.Qc2+/–) 22.e4 (22.Qc2 Bf5 23.e4 Bh3+/–) 22...Qg5 (22...Be6 23.Re1+/–) 23.Qb3 Kh8 24.Rfd1 (24.Rfe1 Qg6+/–) 24...Rf6 (24...Rfe8+/–) 25.g3 (25.Rc5!? Qh6 26.Re5+–) 25...Rdf8 (25...fg3 26.fg3 Rdf8 27.Rc5+=) 26.Rc3 (26.e5!? R6f7 27.Be4+/–) 26...fg3+= 27.fg3 Bg4 28.Rdd3?? (28.Rf1=) 28...Bh3?? (better is 28...Bf3 29.Rf3 Qd2–+) 29.e5?? (better is 29.Qd1+/–) 29...Rf3! 30.Rf3 (30.Qg8 Rg8 31.Rf3 Qd2 32.Rf2 Qd1 33.Rf1 Qf1) 30...Rf3 31.Rf3 (31.Qc4 Qd2 32.Qg8 Kg8 33.Rf3 Qg2) 31...Qc1 32.Kf2 (32.Qd1 Qd1 33.Kf2 Qd2 34.Kg1 Qg2) 32...Qd2 33.Kg1 Qg2 0–1. Kuipers,Stefan – Kamali,Mehran, Hengelo U12 open, 2002.

7.Be2 a5 8.ba5 0–0 9.Bc3 =+.

7.Be2 a5 8.ba5 Ra5 9.Bc3 Ra8 10.–0 0–0 11.d3 c5 12.Nb5 Qc6 13.a4 Be6 14.Nd2 Nbd7 15.Re1 Nb6 16.a5 Qb5 17.de4 Qc6 18.ab6 de4 19.Ba5 Rfd8 20.c4 Nd7 21.Qc2 f5 (21...Nb6?! 22.Ne4 (22.Qe4? Ra5 23.Ra5 Rd2 24.Qc6 bc6–+) 22...Bf5 23.Bf3=) 22.Reb1 Bf6 23.Ra3 Ne5 24.Rbb3 Qd6 25.Bc3 Ra3 26.Ra3 Nc6 27.Ra2 Nd4 (27...Bc3 28.Qc3 Nb4 29.Rb2–/+) 28.Bd4 cd4 29.c5 d3 30.cd6 dc2 31.Rc2 Rd6 32.Nc4 Rc6 33.Kf1 Bd8 34.Rd2 Bb6 (34...Bc4 35.Rd8 Kf7 36.Bc4 Rc4 37.Rd7 Kf6 38.g3+/–) 35.Nb6 Rb6 36.f3 ef3 37.Bf3 Rb4 38.Rd8 Kf7 39.Rb8 b6 40.Ke2 Kf6 41.Kd2 g5 42.Rh8 Rb2 43.Kc3 Rb3 44.Kd4 Rb4 45.Kc3 Rc4 46.Kd2 Rh4 (46...Rc7 47.Rb8 Rd7 48.Kc3–/+) 47.Rb8 Rb4 48.Rh8 g4 49.Bc6 Rb2 50.Kc3 Rb3 51.Kd4 Rb1 52.e4 Rb4 53.Ke3 Ke5 54.ef5 Bf5 55.Re8 Kd6 56.Ba8 b5 57.Rd8 Kc7 58.Rf8 Bg6 59.Rf6 Rb2 60.Bd5 Be8 61.Kd4 h5 62.Rh6 Rb1 63.Kc5 Rc1 64.Kb4 Rc2 65.Re6 Kd7 66.Rh6 Kc7 67.Re6 Bf7 ½–½. Pcmvr (2145) – Ipakris (2170), playchess.de, 2006.

7.Be2 a5 8.b5 A) 8...Qb6 9.Nc3 (9.Ra2 c6 10.bc6 bc6 11.Bc3 0–0 12.Rb2 Qc7=) 9...a4 10.f3 Bd6 11.fe4 (11.g4 h6 12.d3 ef3=) 11...de4 12.0–0= Be5=; B) 8...Bd7 9.Nc3 0–0 10.0–0 Qe5 11.a4 Qg5 12.f4 Qh4=; C) 8...c5 9.bc6 bc6 10.Nc3 0–0 11.0–0 Na6 12.Rb1 Rb8=; D) 8...c6 9.bc6 bc6 10.Nc3 0–0 11.f3 Na6 12.0–0 Rb8=; E) 8...0–0 9.Nc3 a4 10.f3 Qe5 11.0–0 Bc5 12.Na2 Bd6=.

7.Be2 Nc6 8.0–0 Nd4 (8...0–0 9.f3 a5 10.b5 Nd4 11.Bd4 c5 12.bc6 ef3=) 9.Bd4 a5 10.b5 c5 11.bc6 bc6 12.Nc3 Rb8 =.

7.Be2 Bd7 8.0–0 0–0 9.Nb3 Nc6 (9...Rd8 10.Nc5 Bc6 11.Bd4=) 10.Nc5 Bc8 11.d4 (11.f3 b6 12.Nb3 Ne5=) 11...b6=+ 12.Nb3 Nd8 (12...a5 13.b5 a4 14.N3d2=) 13.N1d2= c6 14.c4 Bf5 15.Rc1 Ne6 16.Re1 (16.c5 Qd7=) 16...Rac8 (16...a6 17.c5 bc5 18.dc5=) 17.Nf1 (17.c5 Qc7=) 17...Qb8 (17...dc4 18.Bc4 b5 19.Be2=) 18.b5 (18.Ng3!? Bg6 19.Qc2=) 18...dc4=+ 19.Ng3 Bg6 20.Bc4 cb5 21.Bb5 Rfd8 22.Rc8 Qc8 23.Nd2 Nc7 24.Be2 Qb7 25.Qb3 Nce8 26.Rc1 Nd6 27.Nc4 Nc4 28.Qc4 Bd6 29.Qa4 h5 30.Nf1 b5 31.Qa5 Rb8= 32.Qc3 b4 33.ab4 Qb4 34.Qb4 Bb4 35.Bc4 a5 36.Bc3 Bc3=+ 37.Rc3 a4 38.Ra3 Rb4 39.Nd2 Nd7 40.Kf1= Nb6 41.Be2 f5 42.Ke1= Bf7 43.h4 g6 44.Kd1 Bb3 45.Kc1 Kf8 46.g3 Ke7 47.Nb3 ab3 48.Ra7 Kd6 49.Ra6 Kc7 50.Ra7 Kc6 51.Ra6 Kb7 52.Ra3 Kb8 (53.Kb2 Na4 54.Ra4 Ra4 55.Kb3 Ra7=+). Rosner,Dirk – Jeute,V, corr, 1995.

7.c4 0–0

8.Nc3 a5 9.c5 Qd8 10.Be2 ab4 11.ab4 Ra1 12.Qa1 Nc6 13.Ncb5?? (better is 13.Nc6 bc6 14.f3=) 13...Nb4–+ 14.Qa5 Bc5 15.Qc7 Qc7 16.Nc7 Bd4 17.Bd4 Nc2 18.Kd1 Nd4 19.ed4 Bd7 20.Bb5 Bg4 21.Be2 Rc8 22.Nb5 Ra8 23.Bg4 (23.Rf1 Ra1 24.Kc2 Be2 25.Ra1 Bd3 26.Kb3 Bb5 27.Ra8 Be8–+) 23...Ra1 (23...Ng4?! 24.Ke2–/+) 24.Ke2 Rh1 25.Bc8 Rh2 26.Bb7 Rg2 27.Nc3 Rg5 28.Nd1 h5 29.Ne3 (29.d3 ed3 30.Kd3 h4–+) 29...h4 30.Bc8 Nh5 31.Kf1 Nf4 0–1. combijack (1740) – corme (1675), gameknot.com, 2010.

8.Nc3 dc4 9.Bc4 a5 10.Qc2 ab4 11.ab4 Ra1 12.Ba1 =.

8.Nc3 dc4 9.Bc4 Nc6 10.Ncb5 Qd7 11.Nc6 Qc6 (11...bc6 12.Nd4=) 12.Be2 (better is 12.Rc1!? Bg4 13.Qb3+=) ½–½. Damaso,Rui (2465) – Santos,Carlos P (2340), Lisbon Masters, 1997.

8.Nc3 c6 9.cd5= cd5 10.d3 a5 11.b5 (11.de4 de4 12.ba5 Qc7=) 11...Be6 (11...Bg4 12.Qb1=) 12.Be2 Nbd7 13.Ne6 Qe6 14.d4 (14.de4 de4 15.Rc1 Rfd8=+) 14...Nb6 15.0–0 (15.Qc2 Rac8=) 15...Rac8 16.Rc1 (16.Qc2 Rc7=+) 16...Nfd7 (16...Nc4 17.Bc4 Rc4 18.f3=+) 17.Qb3 (17.Bg4 f5 18.Be2 Nc4 19.Bc4 Rc4=+) 17...f5 (17...Bd6 18.Rc2=) 18.Na4 (18.Rc2 Bd6=) 18...Bd6 19.Rc8 Rc8 20.Rc1 (better is 20.Nb6 Nb6 21.Rc1=+) 20...f4 (20...Nc4 21.Nc3 Rc7 22.Bc4 dc4 23.Qc2=+) 21.Rc8= Nc8 22.ef4 (22.Qc3 Ne7 23.Nc5 Bc5 24.dc5 Nf5+/–) 22...Bf4 23.g3 (23.Qc3 Ncb6 24.Qa5 Qd6+=) 23...Bd6 (23...Bc7 24.Nc5 Nc5 25.dc5+=) 24.Qc3+= Ncb6 (24...Ndb6 25.Nb6 Nb6 26.Qa5+=) 25.Nc5 (25.Nb6 Nb6 26.Qa5 Bc7+/–) 25...Qe7 26.Nb7 Na4 (26...a4!?+/–) 27.Qc8+– Nf8 28.Nd6 (28.Qc6 Qe6+/–) 28...Qd6 29.Bc1 (29.Qc6 Qc6 30.bc6 Nb2+–) 29...Nb6 30.Qc5 Qd8 31.Be3 (31.Qc6 Nfd7+/–) 31...Ne6 (31...Nfd7!? 32.Qd6 Qe8+/–) 32.Qc6+– Kf7 33.Bg4 (33.f3 ef3 34.Bf3 a4+–) 33...Nf8 34.h4 (34.Qc3 a4+–) 34...h6 (34...Kg8!?+/–) 35.Bh5 g6 (35...Kg8 36.Be2 Nc8 37.f3+/–) 36.Be2 Kg7 37.Bd2 a4 38.Ba5 Nfd7 39.Bg4 Qe7 (39...e3 40.Bd7 Qd7 41.Bb6+–) 40.Bb4 (40...Qd8 41.h5+–; 40.Bb6 Nb6 41.Qb6 Qa3 42.Qc7 Kf8 43.Qd8 Kg7 44.Be6+–) 1–0. Melich,Jindrich (2150) – Cakl,Zdenek (1970), CZE–chT2b, 2001.

8.Nc3 Bg4 9.Qc2 c6 10.cd5 cd5 11.Ncb5 (11.f3 ef3 12.gf3 Be6+=) 11...Qd7=+ 12.Nc7 Rc8 13.Rc1 Ne8 (13...a5 14.Bb5 Qd8 15.f3=+) 14.Na8= Rc2 15.Rc2 Nc6 16.Nc6 bc6 17.Ba6 (17.h3 Bf5=) 17...Qd6 (17...Nd6 18.0–0=) 18.Bb7+= Bd7 19.b5 (better is 19.0–0+=) 19...cb5–/+ 20.0–0 Bf6 21.Bf6 Nf6 22.Rc3 Qb8 23.Rc7 Bf5 24.Bc6 Bc8 25.Rb1 Ba6 26.Rb4 Ng4? 27.Bd5+– Nf6 28.Bc6 h6 29.a4 Qf8+= 30.Rb1 ba4=+ 31.Ra7 Bd3 32.Ra1 Qd6 33.Rc1?? Ng4 (34.f4 ef3–+) 0–1. Machete99 (2225) – Celes (2365), ICC, 2002.

8.Nc3 Bg4 9.f3 ef3 10.gf3 Bd7 =.

8.c5 Qd7 =+.

8.c5 Qd8 9.Nc3 a5 10.Be2 ab4 11.ab4 Ra1 12.Ba1 b6 13.cb6 Bb4 14.bc7 Qc7 15.Qc2 Qc5 16.0–0 Ba6 17.Rc1 Rc8 18.d3 Bd3 19.Bd3 ed3 20.Qd3 Ne4 21.Nb3 Qc6 22.Nd1 Qe6 23.Rc8 Qc8 24.Qd5 Qc2 25.g3 Be7 26.Kg2 Nc6 27.Nd4 Nd4 28.Bd4 Bd6 29.Be5 Bf8 30.h3 h6 31.h4 Be7 32.Qa8 Bf8 33.Qd5 Be7 34.h5 Bf6 35.Bf6 Nf6 36.Qa8 Kh7 37.Qf3 Qd3 38.g4 Kg8 39.Qa8 Kh7 40.Qa4 Qe2 41.Kg3 Qd3 42.Qd4 Qf1 43.Nc3 Qg1 44.Kf3 Qh1 45.Ke2 Qg2 46.Qd3 Kg8 47.Qd8 Kh7 48.Qd3 Kg8 49.Qd8 Kh7 50.Qd3 ½–½. Bonetti,Shane – Celes (2275), ICC, 2002.

8.cd5 a5 9.d3 Qd5 10.Nc3 Qg5 11.h4 Qg6 12.b5 ed3 =.

8.cd5 c6 9.dc6+= Nc6 10.Nc6 (10.f3 Nd5 11.Be2 Bh4 12.Kf1 f5=) 10...Qc6 11.Nc3 Rd8 12.Rc1 (12.f3 a5 13.b5 Qe6+=) 12...Bg4 13.Be2 Be2 14.Ne2 Qd5 15.Nd4 a5 16.b5 a4 (16...Nd7 17.0–0 Ne5 18.Rc7+=) 17.Qc2+= Qa2 18.Qb1 Qd5 19.0–0 Bd6 20.g3 (20.f3 Qh5 21.g3 Qg6+/–) 20...Qh5 (20...Ng4 21.d3+=) 21.d3 Re8 (21...ed3 22.Qd3 Ng4 23.h4+/–) 22.de4 Ne4 23.Qc2 Qh3 (23...Qg5 24.Rfd1+/–) 24.Rfd1 (24.f3 Rac8 25.Qe2 Nc5+/–) 24...Rac8 25.Qe2 Rc1 26.Rc1 (26.Bc1?! Nc3 27.Qf1 Qf1 28.Rf1 Bc5=) 26...Nc5 27.b6 Bf8 28.Qb5 Re5 29.Nf3 Rd5 30.Qe8 Qg4 31.Ne5 Rd1? 32.Kg2+– Qe4 33.Kh3 Qf5= 34.g4 Qf2 (35.Rd1 Qe3 36.Kg2 Qe2 37.Kg3 Qe3 38.Kg2 Qe2 39.Kg3 Qe3 40.Kg2=). Van Esbroeck,Dirk – Gundrum,Andreas (2300), corr ICCF–Cup11 V95, 1997.

8.cd5 Qd5 9.Nc3 Qe5 10.d3 a5 11.b5 ed3 12.Bd3 Re8 =.

8.cd5 Qd5 9.Nc3 Qg5 10.Qc2 Qg6 11.Ncb5 Na6 (11...Nd5 12.Bc4 Qg2+/–) 12.Nc7+/– Nc7 +=.

8.f4 dc4 9.Bc4 a5 10.ba5 =+.

8.f4 dc4 9.Bc4 Nc6 10.d3 +=.

8.f4 ef3 9.Nf3 (9.Qf3 a5=) 9...Bg4 (9...a5 10.c5 Qd7 11.Nc3=) 10.c5= Qd8 (10...Qe6 11.Be2 a5 12.Nd4=) 11.Be2 b6 12.cb6 ab6 13.0–0 c5 14.b5 (14.bc5 bc5 15.Qc2 c4=) 14...Ne4 (14...Nbd7 15.Nc3+=) 15.Ne5 Be6 16.Qc2 Qc7 (16...Bd6 17.Nf3=) 17.d3 (17.Nf3 Nd7=) 17...Nd6+= 18.d4 Bg5 19.Kh1 (19.Rf3 c4–/+) 19...Be3 (19...c4 20.a4–/+) 20.Bd3 g6 (better is 20...h6–/+) 21.h4? (better is 21.Re1 Bh6 22.dc5 bc5 23.a4–/+) 21...Qe7–+ 22.g3 Nf5 (22...c4 23.Qe2 Bh6 24.Bc2 Nb5 25.Qf3–+) 23.Rf5 (23.Qg2 cd4 24.Nf3 Qd6 25.Bf5 Bf5 (25...gf5?! 26.Nd4 Ra5 27.a4+=) 26.Bd4 Bd4 27.Nd4 Be4–+) 23...Bf5 24.Bf5 gf5 (24...cd4 25.Nf3 gf5 26.Nd4 Bd4 27.Bd4 Qe1 28.Kg2–+) 25.dc5 (25.Qf5 Qe6 26.Qg4 Qg4 27.Ng4 Bd4 (27...cd4?! 28.Nf6 Kg7 29.Nd5+=) 28.Bd4 cd4 29.Nf6 Kg7 30.Nd5 Nd7–+) 25...f6 26.Qb3 (26.Qg2 Qe6 (26...fe5?! 27.Qd5 Kg7 28.Be5 Rf6 29.cb6=; 26...Qc5?! 27.Nd3 Qb5 28.Nf4–+) 27.Nd3 Qe4–/+) 26...Qc5 (26...fe5?! 27.Qd5 Kg7 28.Be5 Rf6 29.cb6=) 27.Nc3 Rd8 28.Rd1 (28.Ng4 fg4 29.Ne4=) 28...Bd4 29.Nd3 Qc4 30.Qc4 dc4 31.Nf4 Rd7 32.Re1 (32.Nfd5 Bc3 33.Bc3 Kf7–+) 32...Kf7 33.Re6 (33.Nfd5 Bc3 34.Nc3 Rd3–+) 33...Raa7 34.Kg2 (34.a4 Rd8–+) 34...Rab7 (better is 34...Be5 35.Rb6 Rd2 36.Kh3 Rb2–+) 35.Re2 Be5 (35...Rd6 36.h5–+) 36.Ncd5 Bb2 (better is 36...Bf4 37.Nf4 Ra7–+) 37.Rb2–/+ Rd6 38.Rb4 Rbd7 (38...Ra7 39.Rc4 Ra3 40.Rc7 Rd7 41.Rc8+=) 39.Ne3 c3 (39...Rd2 40.Kf3 Ra2 41.Nc4–/+) 40.Rc4 Rd2 41.Kf3 Ra7 (41...c2 42.Rc2 Rc2 43.Nc2–/+) 42.Rc3+= Nd7 43.Nf5 Ne5 44.Ke3 Rd1 (44...Rd8 45.Nh6 Ke8 46.Ke4+=) 45.Nh6 (45.Ke2 Rd8+=) 45...Ke8 46.Ke4 Nf7 (46...Re1 47.Kf5 Nf7 48.Nf7 Kf7 49.Nd3–/+) 47.Nf7 (47.Nf5 Re1 48.Kf3 Re5+=) 47...Kf7 48.Kf5 (48.Rc6 Re1 49.Kf3 Ra3 50.Kg4 Re5 51.Rb6 f5 52.Kh3 Ra2–/+) 48...Re7 (48...Re1 49.Nd3 Rb1 50.a4 Ra4 51.Rc7 Kg8 52.Rc8 Kg7 53.Rc7 Kh6 54.Kf6 Rb5 55.Rc6–/+) 49.Rc6 Attacking the isolated pawn on f6 (49.Kg4 Red7+=) 49...Re5 50.Kg4 Rb5 51.Rc7 Kg8 52.Rc8 Kg7 53.Rc7 Kh6 54.Rc6 Ra1 (54...Rd7 55.a4 Ra5 56.Rf6 Kg7 57.Rb6 Ra4 58.h5+=) 55.Rf6 Kg7 56.Rd6 Ra3 57.h5 (57.Rd7!? Kf6 58.Rh7+=) 57...h6 (57...Kf7 58.Rh6 Kg8 59.Rd6–+) 58.Rd7 (58.Nd5 Ra4 59.Kh3 Rba5–/+) 58...Kg8 (58...Kf8 59.Rd6 Rg5 60.Kh4 Rgg3 61.Rh6–/+) 59.Rd8 (59.Nd5 Kf8 60.Rd6 Rc5–/+) 59...Kf7–+ 60.Rd7 Ke8 61.Rg7 Rbb3 62.Rh7 (62.Kh4 b5–/+) 62...Rg3–+ 63.Kf5 b5 (63...Ra5 64.Ke6 Re3 65.Kd6–+) 64.Rh6–/+ b4 65.Rb6 (65.Rh8 Kf7 66.h6 Ra5 67.Ke4–+) 65...b3 (65...Ra5!? 66.Kf6 Rf3–/+) 66.h6–/+ Kf7 (better is 66...Kd7!? 67.h7 Ra8+=) 67.Rb7= Kg8 68.h7 Kh8 69.Ng6 Rg6 70.Kg6 Ra6 ½–½. Blumenberg,Walter – Gebhardt,Ulrich (2240), Koeln op, 1993.

6.Nd4 Bg4

7.Be2 Be2 8.Qe2 Nbd7 9.d3 c5 10.bc5 Qc5 11.Nd2 Be7 12.0–0 0–0 13.c4 (13.f3!?=) 13...ed3+= 14.Qd3 Ne5 15.Qc3 Nc4 16.Rfc1 b5 17.a4 b4 18.Qc2 Nb2 19.Qb2 Qb6 20.Rc6 Qb7 21.Rac1 Rfc8 22.Qc2 Rc6 23.Nc6 Bd6 24.Nb3 Ne4 25.Nbd4 Nc3 26.Qb2 Qa6 27.a5 Qc4 28.Rc2 a6 29.f4 (29.Qb3 Ne2! 30.Kh1 Nd4 31.Qc4 dc4 32.Nd4 b3–+) 29...Re8 30.Qc1 Rc8 0–1. Fournier,Frederic – COMP ChessGenius 3.0, Paris FRA, 1999.

7.Be2 Be2 8.Qe2 Qd7 9.d3 c5 10.bc5 Bc5 11.Nd2 0–0 12.0–0 Re8 13.Rfe1 Nc6 14.Nc6 Qc6 (worse is 14...bc6 15.Bf6 gf6 16.de4 de4 17.Red1+=) 15.Nb3 Bb6 16.Rac1 Bc7 17.de4 de4 18.Red1 Rac8 19.Nd4 Qd6 20.g3 Qb6 21.Qb5 Re5 22.Qb6 Bb6 23.c4 Bc5 (23...Rec5 24.Nb5 Rc4 25.Rc4 Rc4 26.Nd6=) 24.Nb3+= Rf5 25.Nc5 (25.Bf6!? gf6 26.Rd7+=) 25...Rfc5= 26.Bf6 gf6 27.Rd4 b5 28.Re4 bc4 29.Re7 R5c7 30.Rc7 Rc7 31.Kf1 Kg7 32.Ke2 f5 33.Kd2 Rc6 34.Kc3 Ra6 35.Kb4 Rb6 36.Kc3 Ra6 37.Kb4 Rb6 38.Kc3 Ra6 39.Kb4 ½–½. Fournier,Frederic – COMP ChessGenius 3.0, Active, 1997.

7.Be2 Be2 8.Qe2 Nbd7 9.0–0 c6 10.f4 Nb6 11.Nc3 Nc4 12.Bc1 (12.Rfb1 a5 13.b5 Nb2 14.Rb2 c5=) 12...Qd7 (12...a5 13.b5=+) 13.d3= Nd6 14.Bb2 (14.Nb3 Be7=) 14...Be7 15.Nb3 (15.Na4 b6=) 15...0–0 16.de4 de4 (16...Nfe4 17.Ne4 Ne4 18.Nd2=+) 17.Rad1 (17.Rfd1 Qg4=) 17...Qg4=+ 18.Qg4 Ng4 19.Rfe1 (19.Bc1 Rfd8=+) 19...f5 (19...Rfd8 20.Nd2 Bh4 21.g3=) 20.h3 Nf6 21.Rd4 Rfd8 (21...b5 22.Na5 Rac8 23.Red1=) 22.Red1 Nfe8 23.Na5 Rac8 24.g4 Bf6 25.R4d2 b6 26.Nb3 Nc4 27.Rd8 Rd8 28.Rd8 Bd8 29.Nd1 fg4 30.hg4 Bf6 31.Bc1 g6 32.Nd2 Ned6 33.Nc4 Nc4 34.Nf2 Nd6 35.Kg2 b5 36.Kg3 Kf7 37.Kh3 Ke6 38.Kg3 h6–/+ 39.Kg2 Kd5 40.Kf1 Nc4 41.Nd1 h5 42.Kg2 Nd6 43.Kg3 hg4–/+ 44.Kg4 Nf5 45.Bd2=+ Nh6 46.Kg3 Ke6 47.Bc1 a6 48.Bd2 g5 49.Bc1 Kf5 50.fg5 Kg5 51.Bb2 Nf5 52.Kf2 Bb2 53.Nb2 Kf6 54.c4 Ke5 55.a4 Nd6 56.cb5 cb5 57.ab5 ab5 58.Nd1 Kd5 59.Nb2 Nf7 60.Ke1 Ne5 61.Ke2 Nc6 62.Nd1= Kc4 63.Nf2 Kd5 64.Nd1=+ Kc4 65.Nf2= Kb4 66.Ne4 Kb3 67.Kd3 Nb4 68.Kd2 Nd5 69.Nc5 Kc4 70.Nd3 Nf6 ½–½. Filipek,Jakub (2245) – Lobejko,Rafal (2215), Poland–chT U18 Poland, 1996.

7.Be2 Be2 8.Qe2 Nbd7 9.Nc3 Be7 10.Ncb5 Qb6 11.Nf5 Bf8 12.0–0 g6 13.Nfd4 c6 14.Nc3 Bg7 15.Na4 Qc7 16.Nb3 Ne5 17.f4 ef3 18.gf3 Nc4 19.Rab1 0–0 20.Bc1 Nh5 21.Nac5 Qc8 22.Nd3 Re8 23.a4 a5 24.Na5 Na5 25.ba5 Ra5 26.c3 Ra4 27.Nc5 Rh4 28.Rb7?? Be5 29.Rf2 Nf4! 30.ef4 Bd4?? 31.Re7 Re7+= 32.Qe7 Bf2 33.Kf2 Rh2 34.Ke3 Rh1 35.Bb2?? (better is 35.Nd3=) 35…Re1–+ (35...Re1 36.Kd4 Re7–+) 0–1. Sabicas,Eli – Taylor,Gregory, SN–2008–0–00076, 2008.

7.Be2 g6?? 8.Nb5 Qb6 9.Bf6 Rg8 10.Bd4 c5 (10...Qc6 11.Nc7! (11.Bg4 Qb5 12.Nc3 Qc6+–) 11...Qc7 12.Bg4+–) 11.bc5 (worse is 11.Bg4 Qb5 12.Nc3 Qc6 13.bc5 Bc5 14.Bc5 Qc5+–) 11...Qa5 12.N1c3 f5 (12...Be6 13.Qb1 Nd7 14.Nd6 Bd6 15.cd6 b6+–) 13.Nd5 Bc5 (13...Kf7 14.Ndc7 Na6 15.Na8 Bc5 16.Bc5 Nc5 17.Nbc7 Be2 18.Qe2+–) 14.Bc5 Nd7 (14...Be2 15.Qe2 Kf7 16.Nd6 Ke6 17.Qc4 Qc5 18.Qc5+–) 15.Nd6 Kf8 16.Nb7 Nc5 17.Na5 Rd8 18.Nf6 Rg7 19.Ng4 h5 20.Ne5 Rd5 21.Nac6 Ne6 22.Qb1 Kg8 23.Qb3 Rd6 24.Qb8 (24.Qb8 Kh7 25.Qd6+–) 1–0. Fournier,Frederic (2230) – Ozimandias, queenalice.com (QA–ANNIV–04), 2008.

7.Be2 h5 8.Bg4 hg4 9.h3 gh3 10.gh3 Nc6 11.Nb5 Qd8 12.Bf6 gf6 13.d3 Rh4 14.de4 de4 15.Qd8 Kd8 16.N1c3 Bd6 17.0–0–0 Kd7 18.Nc7 Kc7 19.Nb5 Kb6 20.Nd6 Ne5 21.Nf5 Rhh8 22.Rd6 Kb5 23.Rf6 Rad8 24.Nd6 Ka4 25.Nb7 Rd5 26.Ra6 Kb5 27.Ra5 Kc4 28.Nd6 Rd6 29.Rc5 1–0. Bonetti,Shane – Socket, ICC, 2002.

7.f3 Bd7 8.Nc3 =.

7.f3 ef3 8.gf3 Bd7 9.c4 a5 10.c5 Qe5 (10...Qe7 11.Nc3=) 11.f4 (11.Nc3 ab4 12.ab4 Ra1 13.Ba1 Be7=) 11...Qe4 12.Rg1 ab4 13.ab4 White creates threats along the open a–file 13...Ra1 14.Ba1 c6 (14...Na6 15.Nc3 Qe7 16.Qb3+=) 15.Nc3+= Qe7 16.Qa4 (16.f5 Qe5=) 16...Qd8 (16...Ne4 17.Kd1=) 17.Qa7 Qc7 18.Na4 (18.Qa5 Qa5 19.ba5 Bc5=+) 18...Bc8 (18...Ne4 19.Nb6 f6 20.d3 Nc5 21.bc5 Bc5 22.Na8 Qf4 23.ef4 (23.Qc5? Qe3 24.Kd1 Qg1 25.Nc7 Kf7–+) 23...Ba7 24.Rg7+–) 19.b5+= Nfd7 (19...Bd7 20.Qb6 Qc8 21.f5+=) 20.Bc3 Qd8 21.bc6 Nc6 22.Nc6 bc6 23.Qa8 Qc7 24.Ba6+/– Nb8 25.Bc8 Qc8 26.Be5 h5 27.Bb8 Rh6 28.Nb6 Qd8 29.f5 Bc5 30.Rg7 (30...Rf6 31.Rg8 Bf8 32.Kd1+–) 1–0. Van Rooijen,Peter – Lindner,Joachim, T16–05.53 TSC, 2003.

6.Ne5 Nbd7

7.d4 ed3 8.Nd3 Be7 9.Nc3 c6 10.Be2 0–0 11.0–0 Qc7 12.Qd2 Bd6 13.h3 Nb6 14.Nf4 Bf5 15.g4 Bg6 (15...Bd7 16.Rad1=+) 16.Ng6 fg6 17.Rfd1 (17.g5 Nfd7=) 17...Bh2 18.Kg2 Na4! 19.Qc1? (19.Na4 Ne4) 19...Nc3 20.Bc3 Ne4 21.f4 Nc3 22.Kh2? Nd1 23.Qd1 Rae8 24.Qd2 Qe7 25.Bd3 Qe3 26.Qe3 Re3 27.Rf1 Kf7 28.h4 Ke6 29.f5 Ke5 30.Kg2 h5 31.Kf2 Kf4 32.Rh1 hg4 (33.fg6 g3 34.Kg2 Kg4–+; < 32...gf5 33.gf5 Rf7 34.a4–+) 0–1. Wchess – Fritz3/Pohl, 1995.

7.d4 Be7 8.c4 =+.

7.Nd7 Bd7 8.Be2 a5 =+.

7.f4 ef3 8.Nf3 Be7 9.Bd3 c5 10.0–0 cb4 11.Qe1 ba3 12.Ba3 Nc5 13.Bb5 Bd7 14.Nc3 Bb5 15.Nb5 Qd7 16.Nfd4 b6 (16...Nfe4!?=) 17.Qg3+= Kf8 18.Nf5 Nh5 (18...Rg8!? 19.Bc5 Bc5+=) 19.Qf3 Bf6? (better is 19...Nf6!? 20.Nc3 Rd8+/–) 20.Nfd4 g6 21.g4 Rg8 22.Kh1 Be5 23.gh5 g5 24.Nb3 (better is 24.Nc3+–) 24...Ba1 25.Bc5 bc5 26.Nc5 (26.Na1?! g4 27.Qf6 g3+=) 26...Qe7 27.Qd5 Kg7 (27...Bf6 28.Qa8 Kg7 29.h6 Kh8 30.Qa7+–) 28.Nd6 (28.Nd6 Qe5 29.Rf7 Kh8 30.Qb7+–) 1–0. Eriksson,Mark – Cilfford,Zeckser, corr, 1984.

5.Nf3 Be7

6.d3 0–0 7.Be2 (7.Be5 Qd8+=) 7...a6 (7...Nbd7 8.c4=+) 8.0–0 (8.Be5 Qd7+/–) 8...c5 (better is 8...Nc6!?=) 9.bc5 Qc5 10.Be5 Nc6 11.Bb2 Bf5 12.Nbd2 Rad8 13.Nb3 Qd6 14.c4 dc4 15.dc4 Qc7 16.Qc1 Ne4 17.Nbd4 Nd4 18.Nd4 Bg6 19.Nf3 Nc5 20.Qc3 Bf6 21.Qb4 Be7 22.Qc3 Bf6 23.Qb4 Be7 24.Qc3 Bf6= 25.Qb4 Be7 26.Qc3 Ne4?? 27.Qb3 Nd2 28.Nd2+= Rd2 29.Bf3 b6? 30.Qc3 Rb2+/– 31.Qb2 Bf6 32.Qa2 Ba1 33.Ra1 Rd8 34.Rc1 Qd6 35.h3 h6 36.Bd5 Qe5 37.Qa1 Qg5 38.Qd4 Rd6?? 39.Qf4 Qe7 40.Qf3 Qg5 41.Qf4 Qe7 42.Re1 Rf6 43.Qb8 Kh7+= 44.e4 Qa3 45.Qc7 Qc3 46.Rf1 Qd4 47.Qb8 a5 48.Qa8 1–0. Fournier,Frederic – hepkat, ICC, 2005.

6.d3 Nbd7 7.Be2 =+.

6.Be5 Qa6?? 7.Ba6+– Na6 1–0. SteveF1953 – Bopeep, ChessWorld.net, 2012.

6.Be5 Qd8 7.Bf6 (7.Be2 Nbd7+/–) 7...Bf6 8.d4 0–0 (8...a5 9.b5+/–) 9.Bd3 Re8 (9...Bg4 10.0–0+/–) 10.Nbd2 (10.0–0 a5 11.Nbd2 Be7+/–) 10...Nc6 (10...Bg4 11.Qb1+/–) 11.c3 (11.0–0 Bg4+/–) 11...Bg4 12.Qc2 Ne7? (better is 12...g6!?+/–) 13.Bh7+– Kh8 14.Bd3 Qd7 15.0–0 Bf5 16.e4 Bg6? 17.e5 Bd3 18.Qd3 Be5 19.Ne5 Qe6 20.Rfe1 Qf6 21.Re3 Nf5 22.Rf3 g6 23.g4 Re5 24.de5 Qg5 25.Kh1 Qg4 26.Rg1 Qh5 27.Rh3 Nh4 28.Nf3 (28.Nf3 Re8 29.Rh4 Qh4 30.Nh4+–) 1–0. market – GUGO_2007, gamecolony.com, 2007.

6.Be5+/– Qe6 7.Bc7+– Nc6 8.b5 Qd7 9.Bf4 Nd8 10.Ne5 Qb5?? (Better is 10...Qe6+–) 1–0. Klaus Behrmann – AllKnighter, ChessWorld.net, 2003.

5.Nf3 Bg4

6.d3 Nbd7 7.h3 Be6 8.Ng5 =+.

6.d3 Be7 7.Be2 (better is 7.Be5!? Qe5 8.Ne5 Bd1 9.Kd1+=) 7...Nbd7=+ 8.h3 Bh5 9.Nbd2 0–0–0 (9...0–0 10.c4=+) 10.g4 (10.c4 Bg6=) 10...Bg6 11.Nh4 (11.c4 h5 12.g5 Nh7=) 11...Rhe8 12.Nf5 Bf5=+ 13.gf5 g6 14.fg6= hg6 15.c3 Qc6 16.Bf3 e4–/+ 17.de4 de4 18.Bg2 Ne5–+ 19.Bf1?? Nf3 20.Nf3 Rd1 21.Rd1 ef3 22.b5 Qe6 23.c4 Rd8 24.Rc1 Ne4 25.h4 Qd6 26.Bh3 f5 27.0–0 Nf2! 28.Rf2 Qg3 (28...Qg3 29.Bg2 fg2–+) 0–1. novice1234 – Shadrack, ChessWorld.net, 2009.

6.d4 e4–/+ 7.h3 Bh5 (< 7...ef3 8.hg4 a5 9.gf3 ab4 10.Bb5 Nc6 11.g5=) 8.g4. zs (1660) – lkbo, net–chess.com, 2007.

6.Be2 Nc6 7.c4 Bf3 8.Bf3 e4 9.Be2 dc4 10.Bc4 Nb4?? (better is 10...Rd8=) 11.ab4+– Qb4 (11...Be7 12.Qc2+–) 12.Qb3 (better is 12.Qc2 Be7 13.Bf6 gf6 14.Ra4+– (14.Qe4?! Qb2=)) 12...Qd6?? (better is 12...Qb3 13.Bb3 Nd7+–) 13.Bf7 Kd7 14.Qb5 Kc8 15.Qf5 Kb8 16.Bf6 gf6 17.0–0 b6 18.Bd5 c5 19.Ba8 1–0. vihavald – 2010bogdan, kurnik, 2012.

6.Be2 Nbd7 7.0–0 Be7 8.Nc3 0–0 (better is 8...c6!?=) 9.Nb5+/– Qb6 10.Ne5 Be2 11.Qe2 c6 12.Nd7 Nd7 13.Nd4 Bf6 14.Rab1 a5 15.ba5 Qa5 16.Nf5 Bb2 17.Rb2 b5?? (better is 17...Qc7+/–) 18.Qg4+– g6 19.Ne7 Kh8 (19...Kg7 20.Qd7 Rfd8 21.Qb7+–) 20.Qd7 Qa3 21.Rb3 Qc5 22.Rc3 Qa7 (22...Ra7 23.Rc5 Rd7 24.Nc6+–) 23.Qa7 (better is 23.Qd6!? f6+–) 23...Ra7 24.Nc6 Ra4 25.Rb1 Rc8 26.Kf1 Rc4 27.Rc4 bc4 28.Rb8 (28.Rb8 Rb8 29.Nb8+–) 1–0. PeterRs – Bopeep, ChessWorld.net, 2012.

6.Be2 Nbd7 7.c4 c6 (7...dc4 8.Bc4 e4 9.h3 ef3 10.hg4 fg2 11.Rg1–+) 8.cd5= cd5 9.Nc3 e4 10.Nd4 Be2 11.Nde2 a6 12.Nd4 Ne5 13.0–0 Nd3 14.Qb3 Nb2 (14...Ng4!? 15.f4 Rc8=+) 15.Qb2= Be7 16.Na4 (16.f3 Qe5=) 16...b5 (16...Ng4 17.f4 Bf6 18.h3=+) 17.Nf5= Qd7 (17...Qd8 18.Nc5 (< 18.Ng7 Kf8–/+) 18...Bc5 19.bc5+=) 18.Nb6 (better is 18.Ng7!? Kf8 19.Nh5+/–) 18...Qf5= 19.Na8 Bd8 (19...Qc8 20.a4 Qa8 21.ab5 Qb8 22.ba6 Ng4=+ (22...Qb4? 23.Qb4 Bb4 24.Rfb1+–; 22...Bb4?? 23.a7 Qa8 24.Qb4+–)) 20.Rac1 Qd7 21.Qc3 0–0 22.Nc7 Ng4 23.Qc6 Qe7? 24.Nd5+– Qe5 25.Nf4 g5 26.Rc5 Qb8 27.h3 gf4 28.hg4 f3 29.gf3 ef3 30.Qf3 Bh4 31.Rh5 Qd8 32.Kg2 (32.Kg2 Bf6 33.Qf5+–) 1–0. bluepiramid2 (1720) – plysak, kurnik, 2011.

6.Be2 Nbd7= 7.d3 Be7 8.Nbd2 0–0 9.0–0 a5 10.c3 e4 11.de4 Ne4 12.Nd4 Be2 13.Qe2 Nd2 14.Qd2 Qg6 15.Qe2 Ne5 16.Nb5 (16.Rfe1 Bf6+=) 16...c6–/+ 17.Nd4 Nc4 18.Nf3 b5 19.Nd4 Rfc8 20.Rfe1 Re8 21.Nf3 Bf6 22.Nd4 Be5 23.Rab1 (23.Red1!?–/+) 23...Bd4 24.cd4 ab4 25.ab4 Ra2 26.Rec1 Rea8 27.Ra1 (27.g3 R8a4 28.h4 h5–+ (28...Nb2?! 29.Rb2 Ra1 30.Ra1 Ra1 31.Kg2=; 28...Rb2?! 29.Rb2 Nb2 30.Qb2=; 28...Rb4?! 29.Ra1 Rba4 30.Ra2 Ra2 31.h5–+)) 27...h6 (27...Nb2?! 28.Qb2 R2a4 29.Ra4 Ra4 30.h3=) 28.Ra2 (28.Qd1 Nb2 29.Ra2 Ra2–+) 28...Ra2 29.Rc4 (29.Rc2 Nb2 30.Rc1–+) 29...bc4 30.g3 Qb1 31.Kg2 c3 32.Qg4 Rb2 (32...cb2 33.b5 Ra1 34.Qc8 Kh7 35.Qe8 Qf1 36.Kf3 b1Q 37.e4 Qbd1 38.Ke3 Qde2 39.Kf4 Qff2 40.Ke5 Qf6) 33.Qc8 Kh7 34.h4 Qe4 35.Kg1 Rb1 (35...Rb1 36.Kh2 Qh1) 0–1. tightfist (2210) – pumpkin (2405), net–chess.com, 2013.

6.Be2 Nbd7 7.h3 Bh5 8.g4 Bg6 9.c4 dc4 10.Bc4 Bd3 (10...e4 11.Nh4=+) 11.Qb3 (11.Bd3 Qd3 12.Be5 Ne5 13.Ne5 Qd5+=) 11...Be4 (11...Bc4!? 12.Qc4 a5=) 12.Bf7 Kd8 13.Ke2?? (better is 13.Ng5 Bh1 14.Bc4+=) 13...Qc6 (better is 13...Bf3!? 14.Kf3 Qc6 15.Bd5 Nd5–+ (15...Qd5?! 16.Qd5 Nd5 17.d4–+)) 14.Ne5 Ne5 15.Be5? (better is 15.Rc1 Bf3 16.Ke1–+) 15...Bh1 16.Nc3 Bf3 17.Ke1 Bd6 18.Bf6 gf6 19.Rc1 Bg4! 20.Bd5 Qd7 21.hg4=+ Qg4 22.Ne2? c6–+ 23.Be6 Qe4 24.d3 Qh1 25.Kd2 Qf3 26.Rf1 Kc7 27.Qc4 Rae8 28.b5 Rhg8?? 29.bc6 Re6?? 30.cb7 Kb7?? 31.Qe6+– Kb6 (31...Kb6 32.Qd6 Qc6 33.Rb1 Ka6 34.Qc6 Ka5 35.Qb5#) 1–0. fagus54 (1620) – czempieon, kurnik, 2011.

6.Be2 Be7 7.Ne5 Be2 8.Qe2 Ne4 (better is 8...0–0!?+/–) 9.Qb5+– Nd7 10.Nd7 Qd7 11.Qb7 0–0 12.Qa6 Qf5 13.Qe2 Bd6 (13...Bf6!? 14.Ra2 a5+–) 14.d3+– Ng5? (14...Nf6 15.Qf3 Qf3 16.gf3+–) 15.h4 (better is 15.f4+–) 15...Ne6 16.g4 Qg6 17.Qf3 c6 18.Qf5 Qh6 19.Qh5 Qh5 20.gh5 Rfe8 21.h6! g6 (21...gh6 22.Rg1 Decoy) 22.Bc3 Re7 23.h5 d4 24.Bd2 Nf4 (24...g5!?+/–) 25.hg6+– fg6 26.e4 Ng2 27.Ke2 Rf7 28.Rf1 Bg3?? (28...Nf4 29.Bf4 Bf4 30.c3+/–) 29.f3 (better is 29.fg3 Rf1 30.Kf1 Ne3 31.Be3 de3 32.Ke2+–) 29...Nh4 (29...Nf4 30.Bf4 Bf4 31.Rh1+–) 30.f4 Bf4?? (30...Raf8 31.a4 Ng2+/–) 31.Rf4 (31.Bf4?! Raf8 32.Nd2 Rf4 33.Rf4 Rf4+–) 31...Rf4 32.Bf4 Rf8 33.Nd2 Rf4 ½–½. Tarasov,Ilia – Aistova,Svetlana, Borisoglebsk RUS, City Ch, 2012.

6.Be5 Qd7 7.Bf6+/– gf6 8.d4 Qf5 (8...Nc6 9.c4+/–) 9.Be2 (9.Bd3 Qe6+–) 9...Qe4 (9...Qe6 10.Nbd2+–) 10.c4 dc4 11.Nbd2 Qg6 (11...Qe7 12.Nc4 Rg8 13.Qc2+–) 12.Nh4 Qg5 13.Bg4 Qh4 (13...c3 14.Nc4 b5 15.Bc8+–) 14.Bc8 (14.Bc8 Nd7 15.Bb7+–; < 14.Nc4 Nc6+–) 1–0. Wall,Bill – Amiad, internet, 2006.

6.Be5!? Qe5 7.Ne5 Bd1 8.Kd1 +=.

6.h3 Bf3= 7.Qf3 Nbd7 8.Nc3 =.

6.h3 Bf3= 7.Qf3 g6 8.c4+= c6 9.cd5 cd5 10.Qg3 (10.Nc3 Bg7+=) 10...Nbd7 11.Bb5 Ke7 (11...Kd8 12.0–0+=) 12.0–0 (12...a6 13.Bd7 Nd7 14.Nc3+=). pcmvr (2530) – ludger, net–chess.com, 2006.

6.h3 Bf3= 7.Qf3 g6 8.c4+= Bg7 9.cd5 Qd5 10.Qd5 Nd5 11.Nc3 Nc3 12.dc3 +=.

6.h3 Bf3= 7.Qf3 g6 8.c4+= Bg7 9.cd5 Nd5 10.Nc3 c6 11.Bc4 (11...Nf6 12.d4+/–) 1–0. pcmvr (2530) – ludger, net–chess.com, 2006.

5.h3 Be7

6.c4 c6 7.Nf3 Nbd7 8.c5 Qc7 9.Nc3 0–0 10.d4 e4 11.Nd2 Ne8 (11...b6 12.Be2+=) 12.Nb3 f5 13.Qd2 g5 Black plans f4 (13...Bg5 14.Qe2+=) 14.0–0–0 (14.b5 f4=) 14...Ng7 15.Be2 f4 16.Rdg1 fe3 17.fe3 (17.Qe3 Nf5 18.Qd2 e3 19.fe3 Ng3=) 17...Qg3 18.Nd1 Nf6 19.Rf1 Be6 (19...Nf5 20.Rhg1+=) 20.Kb1 (20.Rf2 b6+=) 20...Nd7 (20...Qg2? 21.Rfg1 Qh1 22.Rh1+–) 21.Bc1 (21.Na5 Rab8+= (21...Qg2 22.Rfg1 Qh1 23.Rh1+–)) 21...Rf1 22.Bf1 Rf8 23.Na5 Qc7 24.g4 b6 25.Nb3 bc5 26.dc5 Ne5 27.Be2 Bd7 28.Rf1 Rf1 29.Bf1 Nf3 30.Qc3 Ne8 31.Bb2 Bf6 32.Qc2 Qg3 33.Qf2= Qf2 34.Nf2 Kg7 35.Bf6 Kf6 36.Kc2 Ke5 37.Be2 Ng1 38.Bd1 Nf6 39.Nd4+/– Ne8 40.Kd2 Nc7 41.Ba4 Nf3 42.Nf3 ef3 43.Bd1 d4 44.Bf3+– de3 45.Ke3 Nd5 46.Bd5 Kd5 47.Kd3 Be8+/– 48.Kc3 a5? 49.Nd3 a4? 50.Nb2 h5 51.gh5 Bh5 52.Na4 Ke5 53.Kd2 Kf4 54.Nc3 Bf7 55.a4 Bc4 56.b5 Be6 57.b6 Bc8 58.Nd5! Kg3 59.Ne7 Bb7 60.a5 Kh3 61.Nc6!! Bc6 Deflection from a6 62.a6 g4 63.b7 g3 64.b8Q g2 65.Qh8 Kg3 66.Qg7 Kf2 67.Qd4 Kg3 68.Qg1 Kf4 69.Kc3 Ke5 70.Qd4 Kf5 71.Kb4 Be4 72.Ka5 Ba8 73.Kb6 Be4 74.c6 Kf4 75.c7 Kg3 76.c8Q (76.c8Q Kf4 77.Qc7 Kf5 78.Qdd7 Kg6 79.Qf7 Kg5 80.Qcf4#) 1–0. Schuchardt,Wolfgang (1685) – Baumgarten,Thomas (1630), Germany, 2005.

6.Nf3 Nbd7 7.Nc3 a6 =+.

6.Nf3 Nbd7 7.c4 0–0 8.Nc3 dc4 9.Bc4 =.

6.Nf3 Nbd7 7.c4 c6 8.c5 Qc7 9.Be2 0–0 (9...b6 10.d4 e4 11.Ne5=) 10.0–0= e4 (10...b6 11.d4 bc5 12.dc5=+) 11.Nd4 Ne5 (11...b6 12.Nf5 Qd8 13.cb6 ab6 14.f3=) 12.Nc3 (12.Qc2 Bd7=) 12...Bd7 (12...b6 13.Na4=+) 13.d3 (13.f4 ef3 14.Nf3 Nf3 15.Rf3 Rfe8=) 13...ed3 14.Bd3 Nd3 15.Qd3 Rfe8 (15...b6 16.Nb3=) 16.Nf5 (16.Rfd1 b6 17.b5 bc5 18.Nc6 Bc6 19.bc6 Rab8=+) 16...Bf5 17.Qf5 Bf8 (17...b6 18.Na4=) 18.Ne2 Qd7 (18...Ne4 19.Rfc1=) 19.Qd3 (19.Qd7 Nd7 20.Rfd1 Be7=) 19...Ne4= 20.f3 (20.Rfd1 Qe7=) 20...Ng5 21.h4 Ne6=+ 22.e4 Qe7 23.g3 de4 24.Qe4 Rad8 25.Rfe1 Nc7 26.Qe7= Re7 27.Nd4 Re1 (27...Red7 28.Re4=) ½–½. Gapp,Wolfgang (1855) – Forster,Reinhard (1950), AUT–chT3, 1998.

6.Nf3 Nbd7 7.Be2 0–0 8.0–0 a5 =+.

4.Nf3 d4

5.e3 Bg4 6.Be2 Bf3 7.Bf3 c6 8.ed4 ed4 9.0–0 Nf6 10.c3 (better is 10.Qe2!? Be7 11.Re1+/–) 10...Be7+= 11.cd4 0–0 12.d3 Qf4 13.Nd2 Bd6 14.g3 Qg5 (14...Qf5 15.Ne4 Be7 16.Re1+/–) 15.Ne4+/– Ne4 16.de4 Nd7 17.e5 Be7 18.Qe2 Nb6 19.Qc2 h5 (19...Rad8 20.Rfd1+/–) 20.h4 (20.b5!? cb5 21.Bc1 Qg6 22.Qg6 fg6 23.Bb7 Rad8+–) 20...Qh6 21.Bc1 Qe6 22.Bg2 (22.Bh5 Rad8 23.Be3 Nd5+–) 22...Nd5 23.Bd5 (23.Be4 f5 24.Bf3 g6+/–) 23...cd5 (23...Qd5 24.Be3+=) 24.Be3 (24.Qe2 g6+/–) 24...Qg4 (24...Bh4 25.Qe2 Qg6 26.Qf3+=) 25.Kh2 f5? (25...Rfc8 26.Qd1+/–) 26.Qd2 Qf3 27.Rfd1 1–0. Fournier,Frederic (1945) – Alfil477 (1680), Active, 2007.

5.g3 f5 6.Bg2 Nf6 7.0–0 Nc6 8.d3 Be7 (8...Be6 9.c4=) 9.c3 0–0 10.Ng5 (better is 10.b5 dc3 11.Qb3 Be6 12.Qc3+/–) 10...h6?? (better is 10...Nd5 11.Qb3 Rd8=) 11.Qb3+– Kh8 12.Nf7 Rf7 13.Qf7 Be6 14.Qg6 Rf8 15.cd4 (15.f4!?+/–) 15...ed4 16.Bc6 bc6 17.e4 fe4 18.de4 Qe5? (better is 18...Bf7!? 19.Qf5 c5+/–) 19.Nd2 (19.f4 Qb5 20.Bd4 c5+/–) 19...Bf7 20.Qf5 Qf5 21.ef5 Rd8 22.Nf3 d3 23.Rfd1 Bb3 24.Ne5 Kg8? 25.Rd3 Rd3 26.Nd3 Bc2 27.Ne5 Be4 28.Bd4 a6 29.Re1 Bd5 30.Nc6! Bd6 31.Ne7 Be7 32.Re7 c6 33.Bf6 gf6 34.Ra7 Bc4 35.f4 Bb5 36.Kf2 Bc4 37.Ke3 Bf1 38.Kd4 Be2 39.Kc5 Bb5 40.Kd6 1–0. Hal1958 – Lamoller, playchess.de, 2002.

5.g3 Nf6 6.c3 =.

5.e3 de3

6.fe3 Nc6 7.b5+/– Na5 (7...e4 8.bc6 ef3 9.Qf3 Qc6 10.Qc6 bc6 11.Bc4+/–) 8.Ne5 (better is 8.Be5 Qd8 9.Be2+–) 8...f6?? (better is 8...Be6+/–) 9.Qh5+– g6 10.Ng6! (10.Ng6 hg6 11.Qh8+–) 1–0. Bonetti,Shane – DSantoro (1830), ICC, 2002.

6.fe3 e4!? 7.Nd4 Qg6 =.

6.fe3 e4!? 7.Ne5 Nd7 =.

6.fe3 Bg4 7.Be5+/– Bf3 8.Bd6 (worse is 8.Qf3 Qe5 9.d4 Qe6 10.Qb7 Qe3 11.Kd1 Qd4 12.Kc1 Bd6+/–) 8...Bd1 9.Bf8 Kf8 10.Kd1 Nf6 11.Bc4 (11.Nc3 Nbd7+/–) 11...Nbd7 12.Nc3 g6 (12...Ne5 13.Bb3+/–) 13.Rf1+– Kg7 14.Ba2 c6 15.Ne4 White gets the initiative 15...Rhf8 16.Nd6 Ne5 (better is 16...a5!?+/–) 17.Nb7+– Neg4 (17...Ne4 18.d3 Rab8 19.Na5+– (19.de4?! Rb7 20.Ke2 Rd8+–)) 18.h3 Nh6 19.Na5 c5 (19...Rac8 20.Nc4+–) 20.bc5 Ne4 (20...Rac8 21.c6+–) 21.d4 (21.Bd5!? Rae8 22.Nb7 f5+–) 21...Nf5 22.Kc1 Nc3 (22...Rac8 23.g4 Nfg3 24.Rf3+–) 23.Kd2 Ne4 24.Kd3 Neg3 (24...Rae8 25.Nc6+–) 25.Rf3 Rae8 (25...Rfe8 26.Bd5 Rad8 27.c4+–) 26.Nc4 (better is 26.Bd5 Ne7 27.c4 Nh5+–) 26...Nh5 (26...Ne4+–) 27.g4 Nf6 (27...Nh4 28.Rf2 Nf6 29.Nd6+–) 28.gf5 gf5 (28...g5 29.Nd6 Rd8 30.Rb1+–) 29.Nd6 Rb8 30.Rg1 Kh8 31.Rf5 Nd7 32.Nf7 (better is 32.Rf7 Nc5 33.dc5+–) 32...Rf7 33.Rf7 Rd8 34.Rd7! Rd7 A deflection (34...h5 35.Rd8 Kh7 36.Bg8 Kh8 37.Rd7 a6 38.Rh7) 35.Rg8 1–0. Bonetti,Shane – DSantoro (1830), ICC, 2002.

6.Be5 ef2 7.Kf2 Qb6 8.Bd4 c5 9.bc5 Bc5 10.Bc5 Qc5 11.d4 Qc6 +=.

6.Be5 ef2 7.Kf2 Qb6 8.Bd4 c5 9.bc5 Bc5 10.Bc5 Qc5 11.d4 Qd6 +=.

6.Be5 ef2 7.Kf2 Qe6 8.Bc7+/– Nc6 (8...Qc6 9.Qe2 Be7 10.Bb8 Rb8 11.Qe5+/–) 9.Bb5+– Be7 10.Re1 Qg6 (10...Qd7 11.Be5 f6+–) 11.Ne5 Qf6 12.Kg1 a6 13.Bc6 bc6 14.Rf1 (better is 14.Nc3 Bf5 15.Qe2+–) 14...Qg5?? (better is 14...Bf5 15.g4 Nh6+–) 15.Nf7 (15.Nc6?! Bb7 16.Qf3 f6+/–; 15.Rf7?! Bf6 16.Qe1 Be6 17.Rf6 gf6+–) 15...Qd5 (15...Qd5 16.Nc3 Qf7 17.Rf7 Kf7 18.Qh5 g6 19.Rf1 Nf6+–). Trkn – Paul Jr., itsyourturn.com, 2001.

4.Nf3 e4

5.Nd4 a6 6.e3 Nf6 7.d3 Nbd7 (7...Be7 8.c4=) 8.de4 de4 9.Nd2 c5 10.Nc4 Qd5 11.bc5 Qc5 12.a4 (12.Nd2 Ne5=) 12...Ne5 (12...Qg5 13.a5=) 13.Nb3 (13.Ba3 Qc7 14.Bf8 Nc4+=) 13...Qb4 14.c3 Qe7 15.Ba3 Qc7 16.Bf8 Kf8 (16...Rf8 17.Qd4 Nc4 18.Qc4 Qc4 19.Bc4=) 17.Qd4 Nc4 18.Qc4 Qc4 19.Bc4 Ke7 20.Nd4 (20.Rb1 Rd8=) 20...Bd7 21.Be2 Nd5 (21...Rhd8 22.Rb1 Ra7 23.a5=) 22.Kd2 Rhc8 23.Rhb1 b5 (23...Rc7 24.c4 Nf6 25.Rb6=) 24.Rb3 (24.ab5 Nc3 25.ba6 Nb1 26.Rb1 Ra7=) 24...ba4+= 25.Rb7 Rc7 (25...Nc3? 26.Bg4 Rab8 27.Bd7 Rb7 28.Bc8+–) 26.Rc7 Nc7 27.Bd1 The isolani on a4 becomes a target 27...Ne6 (27...Rb8 28.Ba4 Ba4 29.Ra4=) 28.Ba4 Ba4 (28...Nc5 29.Bd7 Kd7 30.Ra5=) 29.Ne6 Ke6 30.Ra4 f5 31.Ra5 ½–½. Luzuriaga,Norberto Horacio – Voliani,Mauro, LIAPE, 2003.

5.Nd4 c5 6.bc5 Qc5 7.Nb3 Qd6 8.e3 Nf6 9.Nc3 Qd8 (9...Bg4 10.Be2 Be2 11.Qe2=) 10.Be2 Nc6 11.0–0 Be7 12.f3 0–0 13.fe4 de4 (13...Ne4 14.Bb5=) 14.d4 (14.Rf4 Bd6 15.Ne4 Bf4 16.Nf6 gf6 17.ef4 Qd6=) 14...b6 (14...Be6 15.Nd2 Nd5 16.Nd5 (16.Nce4? Ne3 17.Qb1 Nf1 18.Qf1 Nd4–+; < 16.Nde4 Ne3 17.Qd3 Nf1 18.Rf1 Nd4–+) 16...Qd5 17.c4=) 15.d5= Nb8 16.Qd4 Qc7 17.Ne4 Qc2 18.Rf6 (18.Nbd2 Rd8+/–) 18...Bf6 (18...gf6 19.Bd1 Qc7 20.d6 Bd6 21.Nf6 (< 21.Nd6 Nd7+–; 21.Qd6?! Qd6 22.Nd6 Bd7+–) 21...Kh8 22.Nd5 f6 23.Nc7 Bc7 24.Qd5+–) 19.Nf6+= Kh8?? (19...gf6 20.Qf6 Qb2 21.Qb2+–) 20.Bd3?? (better is 20.Qe4 Qe4 21.Ne4+–) 20...Qb3+= 21.Nh7 f6?? (better is 21...Rg8+/–) 22.Nf8+– Ba6 (22...Kg8 23.Rc1 Bd7 24.Ng6+–) 23.Bh7 (23…Nd7 24.Nd7 Kh7 25.Rd1+–; 23.Ng6!? Kg8 24.Bf5 Bc4+–) 1–0. Lorentzen,Oeystein – Fiedler, corr 3GMM–10, 1995.

5.Nd4 Be7? 6.Nb5+– Qc6 7.Bg7 Qb5? (better is 7...Bf6 8.Nd4 Qb6 9.Bh8 Bh8+–) 8.Nc3+– Qc6 9.Bh8 f6 (9...Nf6 10.e3 a6+–) 10.e3 Qe6 11.Qh5 Kd7 12.Nd5 c6 13.Ne7 Ke7 14.Qh7 Qf7 15.Qe4 Be6 16.b5 Qh7 (16...a6+–) 17.Qh7 (17.Qh7 Bf7 18.Bc4+–) 1–0. b4_player – branne, casual, 2013.

5.Nd4 f5 6.c4 (6.e3 Nf6+=) 6...c5 (6...dc4!? 7.e3 Qg6=) 7.Nb5 Qb6 8.N1c3 Nf6 9.bc5 (9.Na4 Qc6 10.Be5 Na6 11.Nc5 Bc5 12.bc5 dc4 13.Nd6 Ke7 14.Nc4 Nc5+=) 9...Bc5+= Do you see the mate threat? 10.e3 dc4 11.Bc4 Nbd7 (11...Be7+=) 12.Qa4 (12.Na4!? Qc6 13.Nc5 Nc5 14.Be5+/–) 12...Kd8 (12...a6 13.Bb3=) 13.Nd5 (13.Qb3 Qc6 14.d3 Nb6+=) 13...Nd5= 14.Bd5 Qg6 (14...Bf8 15.Bd4 Nc5 16.Qc4=) 15.0–0+= Nb6 (15...a6!?+=) 16.Qa5+/– f4 17.Kh1 (17.Nc3 f3 18.g3 Bd4 19.Be4 Bc3 20.Qc3 Qe4 21.Qg7 Re8 22.Bf6 Re7+–) 17...f3 (17...Re8 18.Rac1 (18.Na7?! Qd6 19.Nc8 Ra5 20.Nd6 Bd6+=; 18.ef4?! Bd7+–) 18...f3 A) 19.gf3 Qh5 20.Qc3 Qf3 (worse is 20...Qd5 21.Qc5 Qc5 22.Rc5+/–) 21.Kg1 Nd5 22.Qc5 Qf5=; B) 19.Rg1+–) 18.gf3 ef3 (better is 18...Qh5 19.Be4 Re8+/–) 19.Rg1+– Bg4 (19...Qh5 20.Rg7 Rf8+–) 20.Rac1 (20.Bb7?! Rb8 21.Ba6 Ra8+–) 20...Be7 (20...a6 21.Nd4 (worse is 21.Rc5 ab5 22.Qb5 Nd7+–) 21...Ke8 22.Rc5+–) 21.Na7 (21.Na7 Ra7 22.Qa7 Nd5 23.Qb8 Kd7 24.Qh8+–; 21.Bb7 Rb8 22.Qa7 Rb7 23.Qb7 Ke8+–) 1–0. Trokenheim,Marek – Andersson,Thomas, corr SSKK 3–65, 1983.

5.Nh4 Nf6 6.Nf5?? (better is 6.g3–/+) 6...Bf5–+ 7.e3 Nc6 8.b5 (8.Be2 Be7–+) 8...Ne5 9.d3 ed3 10.cd3 Be7 11.Nd2 (11.Be5 Qe5 12.d4 Qe6–+) 11...Nd3 (11...Bd3?! 12.Be5 Qe5 13.Bd3–+) 12.Bd3 Bd3 13.Qb3 Bf5 14.Rd1 c5 15.Nf3 c4 16.Qa4 0–0 17.Bd4 Ne4 18.0–0 Qa3 19.Qc2 Ng3! 20.Qd2 Nf1 21.Rf1 Bb4 22.Bc3 Qc3 23.Qd5 Bd3 24.h3 Rad8 25.Qh5 Bf1 (25...Bf1 26.Kh2 Bd6 27.Kh1 Be2–+) 0–1. Wloka,Frank – Breitenstein,Erich, DESC, 2004.

5.Nd4 a5

6.ba5 Nc6 7.Nb5 =.

6.ba5 Bd7 7.d3 Nf6 8.de4 Ne4 9.Nd2 Be7 10.e3 0–0 11.Ne4 de4 12.Qh5 Bf6 13.Rd1 g6 14.Qe2 Qe5 15.Rb1 Qa5 16.Qd2 Qd2 17.Kd2 Rd8 18.Kc1 Bh4 19.g3 Bf6 20.Bg2 Re8 21.Nb3 Bb2 22.Kb2 Bf5 23.Nd4 Ra5 24.Rhd1 Bg4 25.Rd2 Rh5 26.h4 Nd7 27.Kc1 b6 28.Nb5 Rc5 29.Rb4 Nf6 30.Kb2 Be6 31.a4 Bg4 32.Nc3 Rce5 33.Rbd4 Kg7 34.Nb5 R8e7 35.Bf1 Rc5 36.Nc3 Ra5 37.Bb5 Bf3 38.Rd8 Re6 39.Kb3 Bg4 40.R2d4 Re7 41.Bc6 Rae5 42.Kb2 Rf5 43.Rd2 Rc5 44.Ba8 h6 45.Nd5 Nd5 46.Bd5 Bf5 47.Rd4 Ra5 48.Bc6 Ree5 49.Kc1 Re6 50.Rc4 Re7 51.Kd2 Rae5 52.Rcd4 Rc5 53.Bb5 Ree5 54.Rb8 Be6 55.c4 c6 56.Ba6 Ra5 57.Rb6 c5 58.Rdd6 Rf5 59.Bb5 Rf2 60.Ke1 Rf3 61.Kd2 Ra7 62.Rbc6 Rg3 63.Rc5 h5 64.Re5 Rg4 65.Kc3 Rh4 66.Kd4 Bf5 67.Re8 Rh2 68.c5 h4 69.Kc3 h3 70.c6 Ra2 71.Rd1 h2 72.Rc1 Bg4 73.Re4 Bf3 74.Rh4 Rc7 75.Kd4 g5 76.Rh3 g4 77.Rh4 g3 78.Ke5 Re7 79.Kd6 Re6 80.Kc5 Re4 81.Rh3 g2 82.Rh2 Rc2! 83.Rc2 g1Q 84.Kb6 Re3 85.Ka5 Rb3 86.Rhf2 Be4 87.Rce2 Qg6 88.Bc4 Rf3 89.Bb5 Rf2 90.Rf2 Qd6 91.Re2 Bc6 92.Bc6 Qc6 93.Kb4 Qd6 94.Kc3 Qa3 95.Kd2 f5 96.Rf2 Qa4 97.Ke1 f4 98.Kf1 Qd1 99.Kg2 Qg4 100.Kf1 f3 101.Rb2 Kg6 102.Ke1 Qg1 103.Kd2 f2 104.Rb6 Kf5 105.Rb5 Ke4 106.Rb4 Kd5 107.Rb5 Kc4 108.Re5 Qb1 109.Ke3 f1Q 110.Re4 Kc3 111.Rc4 Kc4 112.Kd2 Qbc1# 0–1. Fritz 5.00 MMX – Genius5 P90, 1998.

6.ba5 Nf6 7.c4 dc4 8.e3 Be7 (8...Nc6 9.Bc4 Na5 10.Be2=) 9.Bc4= Ra5 10.d3 0–0 (10...Rg5 11.Qb3 Rg2 12.Bf7 Kd8 13.de4 Ne4 14.Nb5–/+) 11.de4 Ne4 12.Qc2 Nf6 13.Nd2 Rg5 14.Bf1 Rd8 15.Rc1 (15.N2f3 Ra5=) 15...c6 16.N2f3 Rc5 17.Qc5 Qc5 18.Rc5 Bc5 19.Bc4 (19...b5 20.Bb3=) 1–0. Bendig,Frank – Flazinski,Pawel, corr or01–020, 2002.

6.b5 Qb6 7.a4 (7.Ra2 Bd6=) 7...c5=+ 8.Nb3 Nd7 (8...Nf6 9.e3=+) 9.d3 e3 (9...Ngf6 10.de4 de4 11.e3=) 10.fe3= Ngf6 11.e4 (11.g3 Qe6=+) 11...c4 12.Bd4 Qc7 (12...Qd6 13.Nc1=) 13.dc4 (13.N3d2 Bc5 14.Bc5 Nc5 15.ed5 Qe5+=) 13...dc4 (< 13...Qc4 14.N1d2 Qc7 15.ed5 Nd5 16.c4+/–) 14.N3d2 Bd6 (14...Ne5 15.e3 Bb4 16.b6=) 15.e3 Bh2 16.Bc4 Nb6 (16...Qg3 17.Kf1=) 17.Bd3 Bg3 (17...Bg4 18.Be2 Bg3 19.Kf1 Be2 20.Qe2 Qc2 21.Na3=) 18.Kf1 Ng4 (18...Bg4 19.Be2 Be2 20.Qe2 Qc2 21.Na3=) 19.Rh5 (19.Qe2 Ne5=) 19...Nf2 (19...Nh2 20.Kg1 Bg4 21.Bb6 Qb6 22.Nc4–+) 20.Bb6 Qb6 21.Qf3 Qg6 22.Rc5 Be6 23.e5 Qg5 24.Nc3= Qh4 25.Qb7 0–0 26.Ke2 Rab8 27.Nf3 Qb4 28.Qa7 Ra8 29.Qb6 Rfb8 30.Qc7? Nd3–+ 31.Kd3 Rc8 32.Nd5 Bf5 33.Ke2 Rc7 34.Nb4? Rc5 35.Nc6 Rc2 36.Nd2 Be4 37.Rc1 Rc1 38.Ne4 Rc6 39.bc6 Be5 40.Nd2 Ra6 (41.Nf3 Bc7–+) 0–1. Pierred (2175) – Philidor88 (2500), Rated game, 5m + 0s, 2005.

6.c3 Nf6+= 7.e3 Be7 8.h3 (8.d3 Bg4 9.Be2 Be2 10.Qe2 ed3 11.Qd3 0–0+=) 8...0–0 9.a4 (9.d3 Nc6+=) 9...ab4 (9...Qb6–/+) 10.c4 (10.cb4!? Re8 11.b5–/+) 10...Na6 11.d3 (11.cd5 Qd5 12.d3 c5 13.de4 Ne4–+) 11...dc4 12.dc4 c5 13.Nb5 Qd1 14.Kd1 Rd8 15.Nd2 Bf5 16.g4 Bg6 (16...Bd7 17.Bg2–/+) 17.Bg2–/+ h6 18.Ke2 Rd7 19.Rhd1 Re8 20.f4 (20.Nb3 Red8–/+) 20...ef3! 21.Bf3? (21.Nf3 Be4 Combination; 21.Kf3 Red8 Combination; 21.Bf3 Bd3 Combination) 21...Bd3–+ 22.Kf2 Bc2 23.Ke1 Bd1 (23...Red8 24.a5–+) 24.Rd1 Nh7 (24...Red8 25.Nf1–+) 25.Ne4 Red8 26.Rd7 Rd7 27.Ke2 Ng5 28.h4? (28.Ng5 Bg5 29.Bd5–+) 28...Nf3 29.Kf3 Bh4 30.Kf4 (30.Nbd6 g6–+) 30...Rd1 31.Na7 (31.Nbd6 Rf1 32.Ke5 Rb1–+) 31...Rf1 (31...Rf1 32.Ke5 Rb1–+) 0–1. Borup,John – Turko,Sergey, CL7–2001.22.02, 2001.

6.Nc3 ab4 7.Ndb5 Qc6 8.Nd5 +/–.

6.Nc3 c6 7.ba5 Qg6 8.e3 Bd6 9.d3 Nf6 (worse is 9...Ra5 10.Nb3 Ra8 11.de4+/–) 10.de4 Ne4 11.Ne4 de4 12.h4 h5 13.Nb3 0–0 14.Qd4 Bg4 15.Nc5 Ra5 16.Nb7 (16.Ne4? Be5 17.Qb4 Bb2 18.Qb2 Qe4–+) 16...Be5 17.Qb4 Ra4 18.Qb3 (worse is 18.Qa4 Bb2 19.f3 Ba1 20.fg4 Qg4–/+; 18.Be5?! Rb4 19.ab4 Nd7=) 18...Bb2 19.Qb2 Nd7 20.Qc3 Rfa8 21.Be2 (21.Bc4!?+=) 21...Be2–/+ 22.Ke2 R4a7 23.Nc5 Qg4 24.Ke1 Qg2 25.Rf1 Re8 26.a4 (26.Nb3!?+=) 26...Ne5–/+ 27.Ke2 (27.a5 Qg4 28.Rh1 Nf3 29.Kf1 Rd8–+) 27...Nf3 (27...Qg4!? 28.Kd2–+) 28.Rfd1–/+ Qg4 29.Kf1 Nh2 30.Ke1 Qh4 31.Ke2 Qg4 32.Kd2 h4 33.Kc1 h3 34.Nb3 Nf3 35.Kb2 Raa8 36.Qc6 Qg2 37.Qc7 Qf2 38.Qf4 Qe2 39.Rd5 h2 40.Rc5 Rac8 41.Nd4 Rb8 42.Ka3 Qg2 43.Rc7 f6 44.Qd6 Nd4 45.Qd4 h1Q 46.Rh1 Qh1 47.Qc3 Red8 48.Rc5 Qc1 49.Ka2 Qb1 50.Ka3 Kh7 (50...Kh7 51.Rh5 Kg6–+) 0–1. Daatselaar,Jan Bart van (2200) – Gagliardi,Virgilio (2040), corr WC15/WS63 ICCF, 2006.

6.c4 dc4 7.Qc2 Nf6 8.Qc4 c6 (8...ab4?? 9.Nb5 Qc6 10.Nc7 Kd8 11.Qc6 Nc6 12.Na8+–) 9.ba5 Ra5 10.g3 (10.e3 Nbd7+=) 10...Be7 11.Bg2 0–0 12.0–0 Rd8 13.Rc1 (13.f3 ef3 14.Rf3 b5+=) 13...Na6–/+ 14.Qc2 Rc5 15.Qd1 Rc1 16.Qc1 Qc5 (16...Nc5 17.Qc2+=) 17.Qc5 Nc5 18.Ra2 Ng4 (18...Kf8 19.h3+=) 19.h3+= Ne5 (19...Nf6 20.a4+=) 20.Bc3 Bf6 (20...Kf8 21.Rc2+=) 21.Rc2 Na4 (21...Rd5 22.f3 Rd4 23.Bd4 Nf3 24.ef3 Bd4 25.Kh2 ef3 26.Rc4=) 22.Ba1= Nd7 23.Be4 Ndc5 24.Nc6 bc6 25.Bf6 gf6 26.Bc6 Bh3 27.Rc4 Bf5 (27...Be6 28.Ra4 Na4 29.Ba4=) 28.e4 (28.d4 Bb1 29.dc5 Nb2+=) 28...Be6= 29.Ra4 Na4 30.Ba4 Ba2 31.Nc3 Rd2 32.Bb5 Bb3 (32...Be6 33.Kg2+=) 33.a4= Rc2 Black fights for the Initiative 34.Nd5 Kg7 35.Nb6 (35.Kg2 Rb2+=) 35...Rb2 36.a5 (36.Nc8!?+=) 36...Bc2–/+ 37.Bc6 Ra2 38.Nc4 (38.f3 f5–/+) 38...Bb3 (38...f5 39.ef5 Bf5 40.Bd5–+) 39.Bd5 (39.Ne3 Be6–/+) 39...Bc4 40.Bc4 Ra5 41.Kg2 (41.Kg2 f5 42.ef5 Rf5 43.Kf1–+; 41.Bd3 Ra3 42.Bc4 Ra4–/+). Romischke – Wasserthal, 1996.

6.e3 =.

6.b5 Nf6

7.a4 Be7 8.e3 Bg4 (8...Qb6 9.Be2+=) 9.Be2 Be2 10.Qe2 0–0 11.Nf5 Qd7 12.g4 Ne8 13.Ne7 Qe7 14.h4 (14.Nc3 Qe6=) 14...Nd6+= 15.Ba3 Nd7 16.Nc3 Qe6 17.f4 Rfe8 18.Bd6 (18.Qh2 d4 19.ed4 e3+=) 18...Qd6 19.Qg2 (19.h5 Rad8+=) 19...Nc5 20.0–0 (20.Ne2!?+=) 20...d4–/+ 21.Ne2 de3 22.de3 Qf6 (22...Qd2 23.Rfd1 Qc2 24.Nd4–/+) 23.g5+= Qb2 24.Nd4 Qb4 25.Rfb1 ½–½. Maly,Wolfgang – Theisen,Peter, corr GER jub50 qJVH05, 1996.

7.e3 Qb6 8.Nc3 =.

7.e3 Qb6 8.c4 c5 =.

7.e3 c5 8.bc6 bc6 9.c4 Nbd7 10.Nc3 (10.cd5 Nd5 11.Qa4 Ne5=) 10...Ba6 11.Qc2 Ne5 (11...Nc5 12.Na4 Nfd7 13.Nc5 Nc5 14.Rb1+=) 12.cd5= Bf1 (better is 12...Nd3!? 13.Bd3 Bd3+=) 13.Kf1 Rb8 (13...cd5!? 14.Ncb5 Qa6+/–) 14.dc6+– Qc5 15.Qa4 (15.Rb1 Bd6+–) 15...Rb2+/– 16.c7 Nfd7?? (better is 16...Ned7 17.Qc6 Qc6 18.Nc6 Nb6+–) 17.Nc6!! (17.Nc6 Qc6 18.Qc6 Nc6 19.c8Q Nd8 20.Ne4+–) 1–0. Cottarelli,Franco – Salvadori,Romano, 1 ITA Master–ch, 1984.

7.e3 Nbd7

8.a4 Qb6 9.Be2 +=.

8.a4 Ne5 9.Be2= Be7 10.f4 ef3 11.Nf3 Nfg4 (11...Nf3 12.Bf3 0–0 13.Ba3=) 12.Ne5 Ne5 13.0–0 0–0 14.d4 (14.Ba3 Qe6=) 14...Ng6 15.Bd3 Be6 16.Nd2 c5 (16...Rae8 17.c4=) 17.dc5+= Qc5 18.Bd4 Qc8 (18...Qb4 19.c3 Qd6 20.Qf3+=) 19.c3 (19.Qh5 Qd7+=) 19...Bd6 (19...Qd7 20.Rc1+=) 20.Qc2 (20.Rc1 Bg4 21.Qb3 Qc7+=) 20...Qc7= 21.h3 (21.Nf3 Rad8=) 21...b6 22.Nf3 Be7 (22...Rfe8 23.Ng5=) 23.e4 Bc5 24.Kh1 (24.e5 Rac8 25.Qf2 Qe7+=) 24...Rac8 25.Bc5 (25.ed5 Bd5 26.Bf5 Bd4 27.Nd4 Rce8+=) 25...Qc5 Attacking the backward pawn on c3 26.ed5 Bd5 27.Rac1 (27.Rad1 Rc7=) 27...Rc7 (27...Rfe8 28.Bf5 Rcd8 29.c4 Bf3 30.Rf3=) 28.c4 Be6 (28...Bf3 29.Rf3 Re8 30.Rf2=) 29.Rfe1 Rfc8 The pressure on the backward pawn c4 grows (29...Rd8 30.Rcd1 Re8 31.Nd2=) 30.Bg6 hg6 31.Ne5 Bf5 (31...g5 32.Nc6=) 32.Qd2 Re7 33.Nc6 Re1 (33...Re6!?+=) 34.Re1+/– Be6 (34...Ra8 35.Qd5 Qf2 36.Re5 Qf1 37.Kh2 Qf4 38.Kg1 Qc1 39.Kf2 Qf4 40.Ke1+=) 35.Re5 Qa3 (better is 35...Qc4!? 36.Ne7 Kh7 37.Nc8 Bc8+/–) 36.c5+– Qa1 37.Re1 (37.Re1 Qa4 38.Ne7 Kh7 39.Nc8 Bc8 40.Qd8+–) 1–0. Hladik,Gerhard – Gibbs,Peter Campbell, corr EU–chT3, 1983.

8.Nc3 c5 9.bc6 bc6 10.d3 (10.Rb1 Ne5=) 10...Rb8 11.Rb1 Qc7 12.de4 Rb2 (12...de4 13.h3=) 13.Rb2 Ba3 14.Rb3 Bb4 15.ed5 Nd5 (15...Nc5 16.d6 Qb6 17.Rb4 ab4 18.Qb1=) 16.Nde2 0–0 17.Rb4 Nb4 (17...Nc3 18.Nc3 ab4 19.Ne4+=) 18.Nd4 Rd8 19.Bd3 (19.Be2 Nf6 20.Qc1 c5+=) 19...Ne5–/+ 20.0–0 Ng4 (20...c5 21.Ndb5 Qe7 22.Qa1+=) 21.Nf3 (21.g3 Ne5 22.Qa1 Nbd3 23.cd3 c5–/+) 21...Ba6–/+ 22.Qa1 Bd3 23.cd3 Nd3 24.Qa4 Nde5 Threatening mate... how? 25.Ne5 Qe5 Do you see the mate threat? 26.Qg4 Qc3 27.Qh4 Threatening mate... how? 27...Rf8 28.Qa4 Rd8 (better is 28...c5!?–/+) 29.Qh4= The mate threat is Qxd8 29...Rd2 (29...Rd2 30.Qa4 h6–/+) 0–1. Zmolil,Josef – Bonetti,Shane, TT–12 ETC, 2004.

8.Nc3 Nc5 9.Be2 Bd7 (9...Be7 10.0–0=) 10.Rb1 (10.0–0 Be7=) 10...Be7 11.0–0 0–0–0 12.Qe1 h5 13.f3 h4 14.d3 ef3 15.Nf3 (15.Bf3 a4=) 15...b6 (15...h3 16.g3=) 16.d4 (16.Nh4 d4 17.Na2 g5–/+) 16...Ne6 17.Na4 (17.Bd3 h3 18.g3 Rhe8=) 17...Ne4 (17...h3!? 18.g3 Rhe8=) 18.Ne5+= N6g5 (18...Be8 19.c4 f6 20.c5 bc5 21.Qa5+/–) 19.c4 (< 19.Nf7 Nf7 20.Rf7 Bf6=+) 19...dc4 20.Bc4 f7 (20.Nd7 Qd7 21.Bc4 h3+=) 20...Be8 (20...h3 A) 21.Nd7? hg2 (< 21...Rd7 22.g3+=) 22.Ne5 Qh6–+ (< 22...gf1R 23.Qf1 Bf6 24.Qg2–+; 22...gf1N 23.Qf1 Bf6 24.Rc1–+); B) 21.g3+=) 21.Rc1 (21.Nc3 f6 22.Ne4 Ne4+/–) 21...Kb8 (21...h3 22.g3 f6 23.Nf3+=) 22.Nc3+/– Nc3 23.Qc3 f6 24.Bf7?? (better is 24.Nf3 h3 25.g3+/–) 24...Nf7–+ (24...Bf7?! 25.Nc6 Kb7 26.Nd8 Rd8 27.Qe1–+) 25.Ng6 Rh6 (26.Ne7 Qe7–+) 0–1. Benassi,Aspasio – Ghysens,Dirk F, EM/J50/P150, 2001.

8.Nc3 Ne5 9.Be2 c5 (9...Nc4 10.Bc4 dc4 11.Qe2=) 10.bc6 bc6 11.Rb1 Qc7 (11...Rb8 12.0–0=) 12.d3 (12.0–0 Bd6=) 12...a4 (12...c5 13.Ndb5 Qe7 14.de4 de4 15.0–0+=) 13.h3 (13.de4 de4 14.0–0 Bc5=) 13...Be7 (13...c5 14.Ndb5 Qe7 15.de4 de4 16.0–0+=) 14.0–0 (14.de4 de4 15.0–0 0–0=) 14...0–0= 15.de4 (15.f4 ef3 16.Bf3 Re8=) 15...de4 16.Qc1 (16.Qd2 Rd8=) 16...Bd7 (16...Rd8 17.Rd1=) 17.Rd1 Rfd8 18.Ba1 (18.Rd2 Bd6=) 18...Qa5 (18...Bd6 19.Bb2=) 19.Na2 (19.Qb2 Qc5 20.Qb4 Qb4 21.ab4 a3=+) 19...Ng6 (19...Qc5 20.Nb4=+) 20.Bf1 (20.Nb4 Qc7 21.Na6 Qc8–+) 20...Qg5 21.Kh1 Qh4 22.Kg1 c5 23.Ne2 Bc6 24.c4 Bd6 25.Qc2=+ Qg5 26.Nac3 Rd7 27.Rb6 Ne7 28.Nb5 Be5 29.Be5 Qe5 30.Nec3 Rd1 31.Qd1 Bb5 32.Nb5 h6 33.Qc2 Nc8 34.Rc6 Ne7 35.Rc7 Nc8 36.Rb7 Ne8 37.Qd1 Ncd6 38.Ra7 Rd8 39.Ra4 f5 40.Ra6 Nf7 41.Qe1 Qe7 42.Qa5 Nf6 43.Ra8 Nd7 44.Nd6 Qd6 45.Rd8 Nd8 46.Qd8 Kf7 47.a4 Ke6 48.Qe8 Qe7 49.Qg8 Qf7 50.Qa8 Qf8 51.Qd5 Ke7 52.g3 g6 53.a5 Qf6 54.Qb7 Qd6 55.a6+– Qb6 56.Qb6 Nb6 57.g4 Kd6 58.gf5 gf5 59.Kg2 Kc7 60.Kg3 1–0. Cheski,Joanna – Moessle,Harald, P–259, 1997.

8.c4 dc4 9.Bc4 Qc5 10.Be2 Qg5 11.0–0 Nc5 12.f4 (12.f3 Bd6=) 12...Qg6 13.Kh1 (13.Qc2 Bd6+=) 13...Bg4 14.Qc2 Be2 (14...Bd6 15.Bc4+=) 15.Ne2= Bd6 16.Bf6 gf6 17.Nbc3 Rg8 18.g3 (18.Ng3 f5 19.Nd5=) 18...h5 (18...f5 19.Nc1=) 19.Rg1 (better is 19.f5!? Qg4 20.Nf4+=) 19...f5 20.Nd4 (20.Nd5 0–0–0+=) 20...Nd3 21.Nd5 Rd8 22.Nc7 Kf8 23.Qc4 (23.Qc3 Rc8 24.b6 Bc5 25.Qa5 h4= (worse is 25...Bb6 26.Nce6 fe6 27.Qb6+/–; worse is 25...Qb6 26.Qb6 Bb6 27.Ncb5+=)) 23...Bc5 24.Nce6 (better is 24.Nb3!? Qd6 25.Nc5 Nc5 26.b6+=) 24...fe6–/+ 25.Ne6 Ke7 26.Nd8 Rd8 27.h3 b6 28.Kh2 Qe6 29.Qc2 Kd7 30.Qd1 Qf7 31.a4 Bb4 32.Qc2 (32.Rg2 Kc7–/+) 32...Nc5 (32...Rc8 33.Qa2 Qa2 34.Ra2–/+) 33.Rg2 (33.Rab1 Kc8 34.Rg2 Kb8–/+) 33...Kc7 (33...Qb3 34.Qc1–/+) 34.Rd1 (34.Rc1 Kb7+=) 34...Kb7 (34...Qb3 35.Qb3 Nb3 36.g4 Bd2 37.gf5 Be3 38.Rg7 Kc8 39.Rd8 Kd8 40.f6 Bf4 41.Kg2+=) 35.Kg1 Rd6 36.Kf1 Qd7 37.Rf2 (37.Kg1 Rd3–/+) 37...Rd5 (37...Rd3 38.Kg1–/+) 38.Re2 Rd3 39.Kf2 (39.Kg1 Ra3–+) 39...Nb3 (39...Ra3 40.Kg2–+) 40.Ke1–/+ Qd5 41.Kf2 Nd2 (41...Rd2?! 42.Red2 Nd2 43.Ke2 Qc4 44.Qc4 Nc4 45.Rd7 Kc8 46.Rf7=) 42.Qb2 Bc3 43.Qa3 Qf7 44.Qc1 Nb3 45.Qc2 Nc5 46.Kg2 (46.Rg1 Qc4 47.Rc1 Qd5–+) 46...Qd7 47.Rf1 Bd2 48.Kh1 (48.h4 Be3 49.Rfe1 Bd4–+) 48...Be3 (48...h4 49.gh4 Be3 50.Rg2–+) 49.Rg2 (49.h4 Qd4 50.Qa2 Qg7–+) 49...Bd4 (49...h4 50.gh4 Qc7 51.Rg3–+) 50.h4 Qf7 51.Kh2 Ra3 52.Rd1 (52.Rc1 Ra4 53.Qe2 Rb4–+) 52...Ra4 0–1. Skerlik,Stanislav (2305) – Loginov,Aleksandr I (2375), WS/MN/068, 2011.

8.c4 dc4 9.Bc4 Ne5 10.Be2 Bg4 11.f3 ef3 12.gf3 Bh3 13.f4 Ng6 14.Qc2 Be7 15.Bf3 Qb6 16.Rg1 (better is 16.Nc3 Rd8 17.Na4+=) 16...Nd5?? (better is 16...Rd8=) 17.Bd5+– Bh4 18.Kd1 Bf2 19.Qe4 Kf8 20.Rh1 c5 21.Nf5 f6 22.Bc4 Rd8 23.Ke2 Bh4 24.Kd1?? (24.Nh4 Nh4 25.f5 g5+–) 24...Bf2 25.Kc1 Rd7 (25...Qc7 26.Ng7 Kg7 27.Qf3+–) 26.Nc3 Qd8 27.Nd1 Bh4 28.Be6 Bf5 29.Qf5 Rd2 30.Qc5 Rd6 31.Qc4 Ke7 32.f5 Bg5 33.Qe4 (< 33.fg6 Re6 34.gh7 Qc8 35.Qc8 Rc8 36.Kd2 Rh8+–) 33...Qb6 34.a4 (34.fg6 Re6 35.Qd5 hg6+–) 34...Ke8 35.Kb1 Ne7 36.Ba3 (better is 36.Bd4!? Qd8+–) 36...Re6 37.Qe6 (< 37.fe6 f5 38.Qc4 Bf6+–) 37...Qe6 38.fe6 f5 (38...b6 39.h4 Bh6 40.Nc3+–) 39.Ra2 Rf8 (39...Bf6 40.Rd2 Ng6 41.Rd7+–) 40.Rc2 Rf6 41.Be7 Ke7 42.Rc7 Ke6 (42...Kf8 43.Rg1 Bh6 44.e7 Kf7 45.Rb7+–) 43.Rg7 Rg6 44.Rb7 Rh6 45.Ra7 Rh3 46.Rg1 Be3 47.Re1 f4 48.Ne3 (48...Re3 49.Re3 fe3 50.Kc2+– (50.Rh7? e2 51.Rh6 Kd5 52.Rh5 Kd4 53.Rh4 Ke3 54.Rh3 Kd2–+; 50.Ra5? e2 51.Ra6 Kd5–+)) 1–0. Luzuriaga,Norberto Horacio (2350) – Carlsen,Torben Erik (2370), Latin Am zt, 2000.

8.Be2 Ne5 =.

7.e3 Be7

8.Nc3 0–0 9.Rb1 a4 10.d3 Qb6 11.de4 de4 12.Bc4 Rd8 13.0–0 c5 =+.

8.Nc3 0–0 9.Rb1 Qd8 10.Be2 Bd6 11.a4 Be5 12.Ba3 Re8 13.0–0 Nbd7 14.f3 Nb6 15.fe4 de4 16.Bc5 Nbd7 17.Ba3 Bd4 =+.

8.Nc3 0–0 9.Be2 a4 10.f3 Qe5 11.0–0 Bc5 12.Na2 Rd8 13.Nb4 Qg5 =.

8.Nc3 0–0 9.Be2 a4 10.f3 Qe5 11.0–0 Bc5 12.Na2 ef3 13.Bf3 Bd6 14.g3 Qg5 15.Rb1 Bh3 16.Bg2 Bg2 17.Kg2 Nbd7 =.

8.Nc3 a4 9.Rb1 Qb6 10.d3 0–0 11.Be2 Bc5 12.0–0 Re8 13.Qc1 ed3 =.

8.Nc3 a4 9.d3 0–0 10.Rb1 Qb6 11.Be2 Bc5 12.0–0 Rd8 13.Qc1 Nbd7 =.

8.Nc3 a4 9.Be2 0–0 10.f3 Qe5 11.0–0 Bc5 12.Na2 Bd6 13.f4 Qe7 =.

8.Nc3 c5 9.bc6 bc6 10.Be2 0–0 11.Rb1 Na6 12.f3 Nc5 13.0–0 Rb8 =.

8.Nc3 c6 9.bc6 bc6 10.Be2 0–0 11.Rb1 c5 12.Ndb5 Qc6 13.0–0 Be6 =.

8.Nc3 Bd7 9.Rb1 0–0 10.Be2 Qe5 11.f4 Qd6 12.0–0 a4 13.Qe1 Re8 =.

8.Nc3 Bd7 9.Rc1 0–0 10.Be2 Qe5 11.f4 Qd6 12.g4 Ne8 13.g5 f6 =.

8.Nc3 Bd7 9.Be2 0–0 10.0–0 Qe5 11.Qe1 Re8 12.f4 Qd6 13.Qg3 a4 =.

8.Nc3 Bd7 9.f3 Ng4 10.f4 Bh4 11.g3 Bf6 12.a4 Bd4 13.ed4 Qb4 =+.

8.c4 dc4 9.Qa4 0–0 10.Bc4 c5 11.bc6 Nc6 12.f3 Nd4 13.Bd4 Bd7 =+.

8.c4 dc4 9.Bc4 0–0 10.d3 =.

8.c4 dc4 9.Bc4 Nbd7 10.Nc3 Ne5 11.Be2 c6 12.bc6 Nc6 13.Ncb5 Qd7 +=.

8.c4 c6 9.Nc3 (9.bc6 bc6 10.cd5 0–0+=) 9...0–0 (9...c5 10.Nb3 a4 11.Nc1=) 10.cd5= cd5 11.Be2 Be6 12.Ne6 (12.f3 Nbd7=) 12...fe6 13.0–0 Nbd7 14.f4 Nc5 (14...ef3 15.Bf3 Ne5 16.d3+=) 15.d4 ed3 16.Bh5?? (better is 16.Bd3 Nd3 17.Qd3=) 16...Nh5 (16...d4 17.ed4 Qd4 18.Rf2 Nh5 19.Qh5 Rf4 20.Raf1–+) 17.Qh5 Rf5 18.Qg4 g6 (18...Bf6 19.Nd1–+) 19.Rf3 1–0. Hilbert,Stephan J (1710) – Benone,Mateia, FICGS, 2014.

8.d3 0–0=+ 9.c4 b6 10.cd5+= Qd5 11.Nc3 Qc5 (11...Qb7!?+/–) 12.Ne4 Ne4 13.de4 Bf6 14.Rc1 Qe5 (14...Qd6 15.Qc2 Be5 16.Rd1+/–) 15.Bd3 (15.Qc2 Nd7+–) 15...Bb7 16.f4 (16.0–0 c5 17.bc6 Nc6+–) 16...Qe8 17.e5 Bh4 18.Kf1 g6 (18...Bd8+–) 19.Rc7 Bd5 20.e4 Be6 21.f5 (21.Ne6 fe6 22.Qg4 Bd8+–) 21...Bd8 (21...Bd7 22.Qg4 Bd8 23.Rc2+–) 22.Rc2 (22…Bd7 23.a4+–; < 22.fe6 fe6 (< 22...Bc7 23.Bc4+/–) 23.Ke1 Bc7=+; 22.Ne6?! fe6 23.Rc8 Qd7+–) 1–0. marekt – Bob_Essl, ChessWorld.net, 2004.

8.d3 0–0=+ 9.c4 c5!? 10.bc6 Nc6 11.cd5 Bg4 =.

8.d3 0–0=+ 9.Nd2 c5 10.bc6 Nc6 11.c4 Nd4 12.Bd4 Be6 13.cd5 Qd5 14.de4 Ne4 15.Qf3 Nd2 16.Qd5 Bd5 17.Kd2 Rfd8 =.

8.d3 Bg4 9.Be2 Be2 10.Qe2 0–0 ½–½. Jacewicz,Grzegorz – Flazinski,Pawel, corr or02–020, 2002.

8.Be2 0–0 9.0–0 Qb6 10.Ra2 c5 11.bc6 bc6 12.Nc3 c5 13.Na4 Qb7 =.

8.Be2 0–0 9.Nc3 a4 10.f3 Qe5 11.0–0 Bc5 12.Na2 Rd8 13.Nb4 Qg5 14.Bc3 Bd6 15.Rb1 Bh3 16.Rf2 Qg6 17.d3 Bd7 =.

8.Be2 0–0 9.Nc3 a4 10.f3 Qe5 11.0–0 Bc5 12.Nb1 ef3 13.Bf3 Bd6 =.

8.Be2 0–0 9.f3 c5 10.bc6 bc6 11.0–0 Na6 12.Nc3 Rb8 13.Rb1 Nc5 =.

8.Be2 b6 9.0–0 0–0 10.Nc3 c5 11.bc6 Nc6 12.Ncb5 Qd7 13.a4 Ne5 =.

8.Be2 b6 9.a4 0–0 10.Nc3 Qd7 11.0–0 Bd6 12.f3 Be5 13.Qe1 Re8 =.

8.Be2 b6 9.Nc3 0–0 10.0–0 c5 11.bc6 Nc6 12.Ncb5 Qd7 13.Rb1 Nd4 =.

8.Be2 c5 9.bc6 bc6 10.Nc3 0–0 11.Rb1 Na6 12.0–0 Qc7 13.Qe1 Bd6 =.

8.Be2 c6 9.bc6 bc6 10.0–0 Na6 11.Bc3 Nc5 12.Nb3 Nb3 13.cb3 0–0 =+.

8.Be2 Bd7 9.0–0 Qb6 10.Nc3 c5 11.bc6 Nc6 12.Ncb5 0–0 13.Rb1 Rfc8 =.

8.Be2 Bd7 9.Nc3 0–0 10.0–0 c5 11.bc6 bc6 12.f3 Na6 13.fe4 de4 =.

8.Nc3 Qe5

9.Na4 Qg5 10.h3 0–0 11.d3 Rd8 12.Rc1 Nbd7 13.h4 Qg6 =+.

9.Rb1 0–0 10.f4 Qd6 11.Be2 a4 12.g4 Ne8 13.g5 c5 =.

9.b6 cb6 10.Bb5 Bd7 11.Bd7 Nbd7 12.f4 ef3 13.Qf3 0–0 =.

9.f3 Qg5 10.g3 c5 11.bc6 Nc6 12.Ncb5 0–0 13.Rb1 Bd7 =.

9.f4 Qd6 10.Be2 0–0 11.0–0 a4 12.Qe1 Qb6 13.Qg3 Rd8 =.

8.c4 0–0

9.Nc3 dc4 10.Bc4 c5 11.bc6 Nc6 12.Ncb5 =+.

9.Nc3 Bg4 10.Be2 Be2 11.Qe2 c6 (11...dc4 12.Qc4 c5 13.Nf5+=) 12.0–0 (12.cd5 cd5 13.d3=) 12...Qc7 (12...dc4!? 13.Nf5 Qd7 14.Ne7 Qe7 15.Qc4 Nbd7=) 13.cd5+= cd5 14.Rac1 Qe5 15.d3 Bd6 16.g3 (16.f4 Qe7 17.Nf5 Qe6 18.Nd6 Qd6+=) 16...Nbd7 (16...Re8 17.de4 de4 18.Rfd1=) 17.a4 (17.de4 de4 18.f4 ef3 19.Qf3 Nc5=) 17...Rfe8 (17...Rae8 18.de4 de4 19.Rfd1=) 18.de4 de4 19.Nb3 (19.f4 ef3 20.Rf3 Rad8=) 19...Qe6 (19...Qg5 20.f3=) 20.Rfd1 (20.Nd4 Qe7=) 20...Ne5 (20...Qb3 21.Rd6 Ne5 22.Qc2 Qc2 23.Rc2=+) 21.Nd4 Qh3 22.Qf1 Qh5 23.h3 Rac8=+ 24.Rc2 Red8 25.Rdc1 Bc5 26.Nce2 Nd3 27.Nf4 Nf4 28.gf4 b6 29.Qg2 Ne8 30.Qg4 Qg4 31.hg4 Rd5 32.Nb3 Nd6 33.Nc5 bc5 34.Ba3 Nb7+= 35.Rc4 f6 36.R1c3 Rd3= 37.Rd3 ed3 38.Kf1 d2 39.Ke2+= Rd8 40.Kd1 Nd6 0–1. Steiner/Wiesinger – Sader, corr ICCF EU/M/GT/385, 1995.

9.cd5 Qd5 10.Nc3 Qe5 11.d3 c5 12.bc6 Nc6 13.de4 (13.Ne4 Nd4 14.Bd4 Qf5+/–) 13...Rd8 (13...Ne4 14.Ne4 Qe4 15.Qd3=) 14.f4 (14.Qb1 Qg5+=) 14...Qc7 (14...Qb8 15.Qf3 Nd4 16.ed4+=) 15.e5+= White launches an attack 15...Ng4 16.Ncb5 Qb6 17.Qf3 Nh6 (17...Nd4 18.Bd4 (< 18.ed4 Bd7 19.Qe2 Qh6=) 18...Qh6 19.Nc7+–) 18.Bd3+/– Bf5 19.Bf5 (19.Nf5 Rd3 20.Nh6 gh6 21.Qg4 Kf8–/+) 19...Nd4 (19...Bh4 20.g3 Nf5 21.Rb1 (21.gh4?! Nfd4 22.ed4 Qb5=+) 21...Ncd4 22.Bd4+/–) 20.Bd4 (20.Nd4?! Qb2 21.0–0 Rd4 22.Bh7 Kh7 23.ed4 Qd4 24.Kh1 Rb8=; < 20.ed4 Qb5 21.Bh7 Kh7 22.Qe4 Kg8–/+) 20...Qb5 21.Be4 Ba3 22.Kf2 Bb2 23.Rab1+– Rd4 24.ed4 a4 25.Bb7 Rb8 26.Rhc1 Qd7 27.Bd5 Qa7 28.Re1 Nf5 29.Kg1 a3 30.e6 Nh6 31.Kh1 Kh8 32.f5 fe6 33.fe6 The passed pawn on e6 will become decisive later 33...Qe7 34.Rbd1 Rd8 35.Re5 g6 36.g4 Rf8 37.Qg3 Rd8 38.Qf4 Kg7 39.Bc4 Rf8 40.Qg3 Qc7 41.Rc5 Qg3 42.hg3 Ng4 43.Rc7 Kh6 44.e7 Re8 45.Rd2 Nf6 46.Bf7 Ra8 47.Kg2 Bd4? 48.Rd4 a2 49.Ba2 Ra2 50.Kf3 Ra3 51.Kf4 g5 52.Kf5 Rf3 53.Ke6 Kg6 54.Rc8 Re3 55.Kd6 Re1 56.g4 h5 57.gh5 Kh5 58.Rd8 Kg6 59.Rf8 Re2? 60.Rd1 Ne4 61.Kc6 Nf6 62.Rd6 Re7 63.Rdf6 Kh5 64.Rf2 Rg7 65.Kd5 g4 66.Rh2 Kg5 67.Rg2 Kh4 68.Rh8 Kg5 69.Rg1 Kf6 70.Rf8 (70...Ke7 71.Rf3+–) 1–0. Pierred (2145) – Michi47139 (2495), Rated game, 2m + 0s, 2005.

9.cd5 Qd5 10.Nc3 Qe5 11.d3 ed3 12.Bd3 Rd8 13.Qe2 =.

9.cd5 Qd5 10.Nc3 Qg5 11.Qc2 Qg6 12.d3 ed3 13.Qd3 Qg4 +=.

8.Be2 a4

9.0–0 Qb6 10.Ra2 c6 11.bc6 bc6 12.c4 c5 13.Nb5 dc4 14.Bc4 0–0 15.Qc2 Bb7 16.Bf6 Qf6 17.N1c3 Qh4 +/–.

9.0–0 c5 10.bc6 Nc6 11.Nb5 Qd7 12.N1c3 0–0 13.f3 Re8 =.

9.Ra2 0–0 10.0–0 Re8 11.f3 c5 12.bc6 Nc6 13.Bc3 Rb8 =.

9.Bc3 c5 10.bc6 bc6 11.Ra2 0–0 12.0–0 c5 13.Nb5 Qd7 =+.

9.Nc3 0–0 10.f3 Qe5 11.0–0 Bc5 12.Na2 ef3 13.Bf3 Bd6 14.g3 Re8 15.Nc3 Qg5 16.Qe2 Bh3 17.Bg2 Bg2 =.

9.Nc3 Qb6 10.f3 Bd6 11.g4 h6 12.Nf5 Bf5 13.gf5 Qc5 =.

9.f3 0–0 10.0–0 c5 11.bc6 Nc6 12.Nb5 Qc5 13.N1c3 Ra5 14.Rb1 Bf5 15.Qc1 Rd8 16.fe4 de4 17.Qe1 Rd7 =.

9.f3 c5 10.bc6 Nc6 11.Nb5 Qd7 12.0–0 0–0 13.N1c3 Re8 =.

9.f4 0–0 10.0–0 Qb6 11.Ra2 c5 12.bc6 bc6 13.c4 Rd8 =.

8.Be2 Ra7

9.0–0 0–0 10.Nc3 c5 11.bc6 bc6 12.f3 ef3 13.Rf3 Rb7 =.

9.a4 0–0 10.Ba3 Qe5 11.Be7 Qe7 12.Nc3 c5 13.bc6 bc6 =.

9.Nc3 c5 10.bc6 bc6 11.Rb1 0–0 12.f3 Rb7 13.0–0 ef3 =.

9.d3 0–0 10.Nd2 c5 11.bc6 bc6 12.Rb1 Rb7 13.c4 c5 =.

9.f3 c5 10.bc6 bc6 11.Nc3 Rb7 12.Rb1 ef3 13.Bf3 Qc7 =.

8.Be2 Qb6

9.Ra2 c6 10.bc6 bc6 11.Bc3 0–0 12.Rb2 Qc7 13.0–0 Na6 =.

9.Nb3 a4 10.Bd4 Qd6 11.Bc5 Qe5 12.Be7 Qe7 13.Nd4 c5 =.

9.Qc1 c5 10.bc6 bc6 11.Nc3 c5 12.Ndb5 Na6 13.0–0 Rb8 =.

9.Bc3 Bd6 10.0–0 0–0 11.f3 a4 12.Qe1 c5 13.bc6 bc6 =.

9.Nc3 a4 10.f3 Bd6 11.fe4 de4 12.0–0 Be5 13.Nf5 Bf5 =.

7.e3 Bg4

8.f3 ef3 9.gf3 Bc8 10.Nc3 c5 11.bc6 bc6 12.Rb1 Qc7 13.Nce2 Bd6 14.Rg1 0–0 15.Nc6 Nbd7 16.Bh3 Ne8 17.Ncd4 Ndf6 18.Nb5 Bh3?? (Better is 18...Qe7 19.Bc8 Rc8 20.Nd6 Nd6–/+) 19.Nc7+– (19...Bc7 20.f4+–; 19.Nd6? Qd6 20.Rg3 Be6–+) 1–0. b4_player (1920) – ChEsSsMasTeR, GameColony.com, 2002.

8.f3 ef3 9.gf3 Bd7 =.

8.Be2 Be2

9.Qe2 Nbd7 10.0–0 c5 11.bc6 bc6 12.f3 Rb8 (12...Qb8 13.Nc3=) 13.Bc3 ef3 14.Rf3 Ra8 15.Nf5 Qc5 (15...Qe6 16.Bf6 Nf6 17.Nc3=) 16.Qf1 h6 (16...Qb6 17.Ra2+=) 17.a4 (17.Qe1 Qc4+=) 17...Qb6 18.Rf4 (18.Bf6 Nf6 19.Nc3 Qc5=) 18...Rb8 (18...Qc7 19.Bd4=) 19.Na3+= Qa7 20.Ra2 Qc7 21.Qa6 Attacking the isolated pawn on a5 (21.Rb2 Nh5 22.Rh4 Nhf6+=) 21...Nc5 (21...g5 22.Ba5 Qb7 23.Qb7 Rb7 24.Rf1=) 22.Qa5+= Qa5 23.Ba5 Ne6 24.Rf1 Ne4 25.Nb1 Bc5 26.d3 Nd6 (26...Nf6 27.Bc3 Ng4 28.d4+/– (28.Ng7? Ng7 29.Bd4 Ne3 30.Bc5 Nf1–+; 28.Bg7?! Ne3 29.Bh8 Nf1 30.Kf1 Rb1 31.Ke2 Rg1+=)) 27.Nd6 Bd6 28.Bc3 Bc5 (28...Ke7 29.Nd2+/–) 29.Kf2 d4 (29...Kd7 30.a5+/–) 30.ed4 Nd4 31.Bd4 Bd4 32.Ke2 0–0 33.Nd2 Rfe8 34.Kd1 Ra8 (34...Rb2 35.Rb2 Bb2 36.Rf4+/–) 35.Re1 (35.a5 Ra6+/–) 35...Red8 (35...Re1 36.Ke1 Bc3 37.Ke2+/–) 36.Re4 (36.Nf3 Ra5+/–) 36...Ra6 (36...f5 37.Re2+/–) 37.Nc4 (37.Nb3 Bc3+/–) 37...Bc3 (better is 37...f5 38.Rf4 g6+/–) 38.Nd2 (38.g4 Kf8+/–) 38...Bd4+– 39.Nb3 Bf6 (39...Bc3 40.Nc5 Raa8 41.Rc4+/–) 40.Nc5 Ra7 41.Nb3 (41.a5+–) 41...Re7?? (41...Ra6 42.d4 Kf8+–) 42.Re7+– Be7 43.a5 Bf6 (43...Kf8 44.a6+–) 44.a6 Ra8 45.c4 (45.a7 Kf8+–) 45...Be5 (45...Ra7 46.d4+–) 46.g3 g5 (46...Ra7 47.d4 Bd6 48.d5+–) 47.d4 Bb8 48.d5 cd5 49.cd5 The passed pawn on d5 will quickly become a dangerous weapon 49...Kg7 (49...Ba7 50.Na5+–) 50.Nc5 (50.Nd4 Kf6 51.Nc6 Bd6+–) 50...f5 51.Nb7 Kf6 52.d6 Ke6 53.Rd2 Kd7 54.Nc5 Kc6 55.d7 The mate threat is d8Q 55...Bc7 56.Ne6 Bd8 57.a7! (57.Nd8?! Rd8 58.Ke2 Kb6 59.Rd6 Kc5 60.Rh6 Rd7+–) 57...Bb6 (57...Ra7 Deflection from d8 58.Nd8) 58.d8Q Bd8 (worse is 58...Rd8 59.Nd8 Bd8 60.a8Q Kb6 61.Qd8 Kb5 62.Qd5 Kb6 63.Rb2 Kc7 64.Rb7 Kc8 65.Qd7) 59.Nd8 Kb6 60.Rb2 Ka7 61.Ra2 Kb8 62.Ra8 Ka8 63.Nf7 Kb7 64.Nh6 Kc6 65.Nf5 Kd5 66.Ke2 Ke5 67.Nh6 Kf6 68.Kf3 Kg6 69.Ke4 Kh6 (69...Kf6+–) 70.Kf5 Kh5 71.h3 Kh6 72.g4 (72.g4 Kh7 73.Kg5+–) 1–0. Luzuriaga,Norberto Horacio – Boerngen,Eric, Tiger SC, 1999.

9.Qe2 Nbd7 10.0–0 Qe5 11.f4 ef3 12.Qf3 unclear.

9.Qe2 Nbd7 10.a4 c5 11.bc6 bc6 12.Nf5 =+.

9.Qe2 Nbd7 10.a4 Qe5 11.f4 White is in command 11...ef3 12.Qf3 Bd6 13.Nc3 Nb6 (13...0–0–0 14.Nf5=) 14.Nf5+= White threatens strongly d4 14...Bf8 15.Nd1 Qe6 16.0–0 Nc4 (16...Ne4 17.Qe2 f6 18.d3+=) 17.Qg3+/– g6 18.Nd4 Qb6 19.d3 Nb2 20.Qe5 Be7 21.Nb2 Qd6 22.Qd6 cd6 (22...Bd6? 23.Rf6 Be5 24.Rf2+–) 23.Rae1 0–0 24.c4 (24.Re2!?+/–) 24...dc4= 25.Nc4 d5 26.Ne5 Rfe8 27.Rc1 Ba3 28.Ra1 (28.Rc7 Bd6 29.Nd7 Bc7 30.Nf6 Kg7 31.Ne8 Re8=) 28...Re5 (28...Bd6 29.Rf6 Be5 30.Rf3+=) 29.Rf6= Bb4 (29...Bb2 30.Rb1 Bc3 31.Kf2=) 30.Rf3 (30.Kf2 Rae8 31.Nc2 Bd2=) 30...Bc3+= 31.Ra3 Bd4 32.ed4 Re1 33.Rf1 Rf1 34.Kf1 Rc8 35.Ra2 Rc1 36.Ke2 f5 37.Kd2 Rc8 (37...Rg1 38.Kc3+=) 38.Ra1= Kf7 39.Re1 Re8 (39...Kf6 40.Re5 Rd8 41.Ke2=) 40.Rc1= b6 41.Rc7 Re7 42.Rc6 ½–½. Kamminga,Gosse – Meireles,Jose Gilberto, corr BRA–NED, 1997.

9.Qe2 Nbd7 10.Nc3 c5 11.bc6 bc6 =.

6.b5 Bg4

7.h3 Bd7 8.a4 A) 8...Be7 9.Nc3 (9.e3 Nf6 10.Nc3 Qb6 11.Be2 0–0 12.0–0 c5 13.bc6) 9...Nf6 10.e3 0–0 11.Be2 Qb6 12.0–0 c5 13.bc6; B) 8...Nf6 9.e3 Be7 10.Nc3 Qb6 11.Be2 c5 12.bc6 Nc6 13.Ncb5.

7.h3 Bd7 8.Nc3 D1) 8...Be7 9.e3 (9.d3 Nf6 10.g4 Qe5 11.Na4 e3 12.fe3 Qe3 13.Qd2) 9...Nf6 10.Be2 0–0 11.0–0 Be6 12.Ne6 Qe6 13.d3; D2) 8...Nf6 9.e3 (9.a4 Qb6 10.e3 c5 11.bc6 Nc6 12.Ncb5 Bc5 13.Be2) 9...Be7 10.Be2 0–0 11.0–0 c5 12.bc6 Nc6 13.Ncb5.

7.h3 Bd7 8.d3 A) 8...Nf6 9.de4 (9.Nc3 Be7 10.de4 Ne4 11.Qd3 f5 12.g3 c5 13.bc6) 9...de4 10.Nc3 Qe5 11.Qd2 Be7 12.0–0–0 0–0 13.f4; B) 8...Be7 9.Nc3 (9.g3 Nf6 10.Nc3 c5 11.bc6 Nc6 12.Ncb5 Qb8 13.Bg2) 9...Nf6 10.de4 de4 11.e3 Qe5 12.f4 ef3 13.Qf3; C) 8...c5 9.bc6 Nc6 10.Nb5 Qb8 11.de4 de4 12.N1c3 Nf6 13.Nd5.

7.h3 Bd7 8.e3 Nf6 9.d3 Be7 10.c4 0–0 (10...c5 11.bc6 bc6 12.Nd2=) 11.cd5+= Qd5 12.Nc3 Qe5 13.de4 Ne4 14.Ne4 Qe4 15.Qd3 Qd3 16.Bd3 c5 (16...c6 17.Rd1+=) 17.Nf5+/– Bf5 18.Bf5 b6 19.0–0–0 g6 20.Bd3 a4 (20...Ra7 21.Bc4+/–) 21.Rd2 (21.h4 h5+/–) 21...Rd8 22.Rhd1 Ra7 23.g3 Kf8 24.e4 Bg5 25.f4 Be7 26.e5 Rc7 27.Bc4 Rd2 28.Rd2 Nd7 29.Kc2 Ke8 30.Bd5 Ra7 31.Bc6 Bf8 32.Kc3 Ke7 33.Kc4 Rc7 34.Rd6 Kd8 35.Rd1 Ke7 36.h4 (36.g4 Bh6 37.f5 Bf4 38.f6 Kd8+–) 36...h5+/– 37.Bg2 Ke6 38.Bh3 Ke7 39.Rd6 Kd8 40.Rc6 Rc6 (40...Bg7 41.Rc7 Kc7 42.Bd7 Kd7 43.e6 Ke7 44.Bg7 fe6 45.Be5+–) 41.bc6 Nb8 42.Kb5 Kc7 43.Bg2 c4 44.Bd5 (44.Kc4?! Nc6 45.Kb5 Nd8+–) 44...Bc5 45.Bc3 (45.Kc4?! Nc6 46.Bf7 Ne7+–) 45...Ba3 46.Ka4 Be7 47.Kb5 Bc5 48.Bb2 Nc6 49.Bc6 Kd8 50.Kc4 Bf2 51.e6! fe6 (51...Ke7 52.ef7 Kf7 53.f5 gf5 54.Be5+–) 52.Bf6 Kc7 53.Be4 Bg3 54.Bg5 (worse is 54.Bg6 Bf4 55.Bh5 Kd6+–) 54...e5 55.fe5 Be5 56.Bg6 Kc6 57.Bh5 b5 58.Kb3 Kc5 59.Be8 Kb6 (59...Kd5 60.h5+–) 60.h5 Kc5 61.h6 Kd6 62.h7 Bg7 63.Bd2 Ke7 64.Bh5 Kd6 65.Bc3 Bc3 66.Kc3 Kc5 67.Kb3 Kd5 68.h8Q Ke6 69.Bg4 Kf7 70.Qe5 b4 71.Bf5 Kf8 72.Bg6 Kg8 73.Qe7 Kh8 74.Qh7 1–0. Fournier,Frederic (2080) – NN, Active, 2004.

7.h3 Bd7 8.e3 Qg6 9.h4 (9.Nc3 Nf6 10.a4 Bc5 11.Nce2 Qg5 12.h4 Qh6 13.c4) 9...Nf6 10.Nc3 c5 11.Nde2 Bd6 12.Na4 Ng4 13.Nf4.

7.h3 Be6= A) 8.Ne6 A1) 8...Qe6 9.Nc3 (9.e3 Nd7 10.d3 Ngf6 11.Nd2 Ne5 12.d4 Ng6 13.c4) 9...Nd7 10.e3 Ngf6 11.Ne2 Bd6 12.Nd4 Qe5 13.Be2; A2) 8...fe6 9.d3 (9.e3 Nd7 10.d3 Ngf6 11.Be2 Be7 12.Nc3 0–0 13.de4) 9...Nf6 10.Nc3 e3 11.fe3 Be7 12.g4 0–0 13.Kd2; B) 8.g4 B1) 8...Nd7 9.Nc3 (9.d3 Nc5 10.Nc3 e3 11.fe3 Be7 12.Kd2 Nh6 13.Bg2) 9...h5 10.Ne6 Qe6 11.d3 0–0–0 12.de4 de4 13.Qd5; B2) 8...Nf6 9.Bg2 h6 10.Nc3 Nbd7 11.d3 Nc5 12.0–0 Be7 13.de4; B3) 8...h5 9.c4 (9.g5 Nd7 10.Nc3 Ne7 11.Bg2 Ng6 12.d3 Nh4 13.Kf1) 9...hg4 10.Nc3 Nf6 11.cd5 Bd5 12.Bg2 gh3 13.Bh3; C) 8.e3 Nd7 (8...Nf6 9.Ne6 fe6 10.Bf6 gf6 11.Nc3 Qe5 12.f4 ef3 13.Qf3) 9.Nc3 (9.d3 Ngf6 10.Nd2 Ne5 11.Be2 Be7 12.Ne6 Qe6 13.d4) 9...Ngf6 10.Nce2 Ne5 11.Ne6 fe6 12.Nf4 Be7 13.d4; D) 8.Nc3 Nf6 (8...Nd7 9.g4 h5 10.d3 e3 11.fe3 hg4 12.Ne6 fe6 13.Kd2) 9.g4 (9.e3 Be7 10.Ne6 fe6 11.d3 Nbd7 12.de4 de4 13.Be2) 9...Be7 10.d3 ed3 11.cd3 0–0 12.g5 Nfd7 13.Qd2.

7.h3 Bh5?? 8.Nf5+– Qg6 9.g4 Qg5 10.Nc3 (10.d3 Nd7 11.Nc3 Ne7 12.de4 Bg6 13.Nd5 Nd5 14.Qd5 Bf5 15.Qb7 Rb8+–) 10...c6 11.d3 (11.gh5?! Qf5 12.d3 Nf6=) 11...Bg6 12.de4 Bf5 13.gf5 (worse is 13.ef5 Nf6+–) 13...de4 14.Ne4 Qf5 15.Nd6 Bd6 16.Qd6 Nf6 17.0–0–0 Nbd7 18.bc6 bc6 19.Rg1 Qc5 20.Rg7 Qd6 21.Rd6 Ke7 22.Rc6 Rhg8 23.Rg8 Rg8 24.Kd2 Rg1 25.Ke1 Ne4 26.Rh6 Ndc5 (26...Rg8 27.Bd4+– (worse is 27.Rh7 Rb8 28.Bg2 Rb2 29.Be4 Nf6+–)) 27.Rh7 Ne6 28.Rh4 f5 29.Rh7 Kd6 30.Rh5 Nf4 31.Rh6 Kd5 32.e3 Ne6 33.c4 Kd6 34.Ke2 Kd7 (34...Nd2 35.Kd2 Rf1 36.Ke2+–) 35.h4 1–0. phildo (1865) – grizzzlybear (2090), gameknot.com, 2013.

6.Nc3 Nf6

7.ba5 Ra5 8.Nb3 Ra8 9.d3 Be7 10.de4 de4 11.Qd6 cd6 (11...Bd6 12.Nb5 Bf4 13.e3+=) 12.Rd1= 0–0 (12...Be6 13.Nb5 0–0 14.Nd6+=) 13.Nb5 Bd8 (13...Ne8!?=) 14.e3 (14.Nd6 Nbd7+/–) 14...Bg4 (14...d5 15.Bf6 Bf6 16.Rd5+=) 15.Rd4 (better is 15.Be2 Be2 16.Ke2+/–) 15...Bf5? (better is 15...d5=) 16.Ra4?? (better is 16.Nd6 Be6 17.Ne4+–) 16...Ra4–+ (17.Nd6 Be6–+) 0–1. Dopper,Johan – Van den Berg,A, corr NLD BV/91, 1991.

7.b5 c5 8.bc6 bc6 9.e3 Nbd7 10.Rb1 Ne5 11.f4 ef3 12.gf3 Rb8 13.f4 Ng6 14.h4 Bg4 15.Be2 h5 16.Ba1 Bd7 17.Bd3 (17.Rb8 Qb8 18.Qc1 c5+=) 17...Be7 (17...Rb1 18.Qb1 Ng4 19.Qb6+=) 18.Rb8= Qb8 19.a4 0–0 20.Bg6 fg6 21.Qe2 Bb4 22.0–0 (22.Rg1 c5 23.Ndb5 Bf5+=) 22...Qc8 23.Rb1 Re8 (23...c5 24.Ndb5+=) 24.Na2 Be7 25.Nc3 Ng4 26.Qd3 Kh7 27.Nce2 Bh4 28.Nf3 Bf5 29.Qb3 Be7 30.Ng3 Bb4 31.Bd4 c5 32.Ng5 Kg8 33.Qd5 Be6 34.Ne6 Qe6 35.Qe6 Re6 36.c3 cd4 37.cb4 de3 38.de3 ab4 (38...Re3 39.Nf1 Re4 40.b5 Rf4 41.b6=) 39.Nf1 Kf7 40.Rb4 Ne3 41.Ne3 Re3 42.a5 Ra3 43.Rb5 Ra4 44.Kg2 Rf4 45.Rb7 Kf6 46.a6 Ra4 47.a7 Ra2 48.Kg3 g5 49.Rb6 0–1. marekt – cdjen, ChessWorld.net, 2003.

7.b5 Qe5 8.Na4 (8.e3 Bd6=) 8...Qg5 9.g3 Qh5 10.e3 Bg4 11.Be2 Qh3 12.Bg4 Ng4 (worse is 12...Qg4 13.Qg4 Ng4 14.Nf5=) 13.Qe2 Nd7 14.Qf1 (14.f3 Ngf6=) 14...Qf1+= 15.Kf1 Nge5 16.Kg2 Nc4 (16...Rd8 17.Rhb1+=) 17.d3= Nb2 18.Nb2 Ne5 19.Rhd1 h5 (19...c6 20.de4 de4 21.bc6 bc6 22.f4 ef3 23.Nf3 Nf3 24.Kf3=) 20.h3 g6 21.Na4 (21.c4 dc4 22.de4 c6=) 21...Nd7 (21...c6 22.Nc3 f5 23.Ne6+=) 22.de4 (22.Nc3 Nf6+=) 22...de4= 23.Nb3 (23.Nc3 Nc5=) 23...f5 24.h4 Bd6 25.c4 b6 26.Nd4 Ne5 27.Ne6 Nd3 28.Nc3 (28.f3 ef3 29.Kf3 Ne5 30.Ke2 Rb8=) 28...Nb2 29.Rdc1 (29.Nd5 Nd1 30.Nec7 Bc7 31.Nc7 Ke7 32.Na8 Ne3 33.fe3 Ra8+=) 29...Kd7 30.Ng5 (30.Nf4 Bf4 31.gf4 c6+=) 30...Be5 (30...Nd3 31.Rd1+=) 31.Nf7= Bc3 ½–½. Miraglia,Jorge – Kaniak,Andrzej, email 4AMM–F, 1998.

5.Nd4 Na6

6.Nc3 Nf6 =.

6.c4 dc4 7.e3 Qg6 8.Qc2 c5 9.bc5 Nc5 10.Qc4 a6 11.Nc3 Nf6 12.Nd5 Nd5 13.Qd5 Be7 14.Rc1 Qd6 (14...Be6 15.Qe5 f6 16.Qf4+=) 15.Qh5 0–0 16.Bc3 Rd8 17.Bc4 Be6 18.Ne6 Ne6 19.Qg4 (19.Bb4 Qd7 20.0–0 Rac8+=) 19…Rac8 (19...Qa3 20.Ra1 h5 21.Qe4+–) ½–½. Schwertel,Gottfried – Lorentzen,Oeystein, corr 3GMM½–03, 1998.

6.c4 dc4 7.e3 Qg6 8.g3 Bg4 9.Qc2 c5 10.bc5 Nc5 11.Bc4 Nf6 12.0–0 Be7 13.Nc3 0–1. Fournier,Frederic – Lorentzen,Oystein, corr GMM03–Sf03, 1997.

6.e3 Nf6 7.Nc3 =.

6.e3 Nh6 7.Be2 Qg6 (7...c5 8.bc5 Nc5 9.Nc3+=) 8.0–0 (better is 8.Bb5 Bd7 9.Bd7 Kd7 10.0–0=) 8...Bh3 9.g3 Bf1 10.Qf1 Be7 (10...c5 11.Bb5 Kd8 12.bc5 Bc5 13.f3–/+) 11.c4 (11.Bb5 Kd8–/+) 11...c5–+ 12.bc5 dc4 13.Bc4 Nc5 14.Nc3 (14.Bb5 Kd8–+) 14...0–0 15.Nd5 Bd6 16.Nb5 (16.Rc1–+) 16...a6 (16...Rfd8 17.Nd6 Qd6 18.f3–+) 17.Nd6 (17.Nf6 gf6 18.Nd6–+) 17...Qd6–+ 18.Rd1 (18.Rc1 b5 19.Ba2 Nd3–+) 18...b5 19.Ba2 (19.d4 Na4 (19...bc4?! 20.dc5 Qc5 21.f3–+) 20.Bc3 bc4 21.Qc4 Rfd8–+ (< 21...Qa3 22.Bb4 Nb2 23.Ba3 Nc4 24.Bf8 Kf8 25.Nc3–+)) 19...Nd3 20.Bc3 (20.Rb1 Rfc8 21.Nb4 Nb4 (< 21...Nb2 22.Rb2 a5 23.Nd5–+) 22.ab4 Qd2–+ (22...Qb4?! 23.d3–+)) 20...Qa3 21.Bb1 Qd6 22.Bd3 Qd5 23.Bc2 f6 24.d3 Rfc8 25.de4 Qh5 26.Qd3 Ng4 27.h4 Kh8 28.Qf1?? Rc3 29.Bd3 Qc5 30.Be2 Ne3 31.fe3 Qe3 32.Kh1 Qg3 0–1. Hasler,Ulrich – Lorentzen,Oeystein, corr 3GMM–10, 1995.

5.Nd4 Qb6

6.e3 Nf6 7.Nb3 Be7 8.Be2 0–0 9.0–0 Be6 10.d4 c6 11.c4 Nbd7 12.cd5 cd5 13.Nc3 Rac8 14.Nc5 a5 15.N3a4 Qa7 16.ba5 Nc5 17.dc5 Qa5 18.Bc3 Qc7 19.Nb6 Rb8 20.Rc1 Rfd8 21.Bd4 Nd7 22.Nd7 Qd7 23.Rc3 Rbc8 24.Qb3 Rc7 25.Bb5 Qc8 26.Rfc1 Qa8 27.f3 Rdc8 28.f4 Qa5 29.a4 Bf8 ½–½. Luzuriaga,Norberto (2025) – Gregor,Stipan, 11. VCC–Open, 2002.

6.e3 Nf6 7.Nb3 Bg4 8.f3 ef3 9.gf3 Bf5 =.

6.e3 Nf6 7.c4 c5 8.Nb5 dc4 9.Bc4 a6 10.N5c3 cb4 11.ab4 Qb4 (11...Bb4?! 12.Nd5 Nd5 13.Bd5=) 12.Bb5 Nbd7 13.Qc2 Qe7 14.Ra5 Qd8 15.Bd7 Bd7 (worse is 15...Kd7 16.Qa4 b5 17.Rb5 ab5 18.Qa8+/–; worse is 15...Nd7 16.Qe4 Qe7 17.Qc2+=) 16.Re5 Be6 17.Ne4 Rc8 18.Bc3 Nd5 19.0–0 Qd7 20.Ng5 Be7 21.Ne6 (21.Nh7? Nb4 22.Qd1 Rh7 23.Bb4 Bb4 24.Re6 fe6–+) 21...fe6 22.Rh5 g6 23.Rh3 b5 24.Qb2 0–0 25.Bh8 Nf6 26.Bf6 Bf6 27.d4 Bg7 28.Nd2 Qd5 29.Rg3 Rc6 30.Qb3 Rfc8 31.Qd5 ed5 32.Nb3 Rc3 33.Nc5 b4 34.Na4 Rc2 35.Rg5 b3 36.Rd5 b2 37.h3 Rf8 38.Nb2 Rb2 39.Ra5 Rf6 40.Rc5 h6 41.Rc8 Kh7 42.Ra8 Ra2 43.d5 Rf7 44.f3 Rb7 45.Kh1 Rbb2 46.Rg1 Rd2 47.Ra7 h5 48.f4 h4 49.Rd7 Kh6 50.Rd8 a5 51.Rd6 Bf8 52.Rc6 Rd5 53.e4 Rd4 54.Re6 Kg7 55.Rc1 Kf7 56.f5 gf5 57.ef5 Bd6 58.Rb1 Bg3 59.Rc6 Rb2! 60.Ra1 (60.Rb2 Rd1 Mate attack) 60...a4 61.Rcc1 Bd6 62.Re1 a3 63.Rec1 a2 64.Re1 Rdb4 65.Rg1 Bg3 0–1. Luzuriaga,Norberto Horacio (2350) – Da Silva Filho (2255), Latin America zt–15 sf1, 2000.

6.e3 Nf6 7.c4 c5 8.Nb5 dc4 9.Bc4 Na6 (9...a6 10.bc5 Bc5 11.Qa4–/+) 10.0–0 (10.bc5 Bc5 11.d4 ed3 12.Qd3 0–0=) 10...Bd7 11.bc5 Nc5 12.a4 Nd3 (12...Bg4 13.a5 Qc6 14.Qc2=) 13.Bd3 (13.Bf6 gf6 14.N1c3 Bc6+/–) 13...ed3 14.Qb3 Bb5 (14...a6!? 15.Bd4 Qc6 16.Bf6 Rc8+=) 15.ab5+/– Bc5 (15...Qd6 16.Bf6 Qf6 17.Ra4+/–) 16.Qd3 0–0 (16...Rd8 17.Qf5+/–) 17.Nc3 (17.Qf5 Ne8+/–) 17...Bb4 (17...Qe6 18.Rfc1+/–) 18.Qf5 1–0. Wall,Bill – Dimitris, internet, 2000.

6.e3 Nf6 7.d3 c5+= 8.Nb3 cb4 9.Bd4 Qc7 10.c3 ba3 11.Na3 Ba3 12.Ra3 Nbd7 13.de4 de4 14.Qa1 Can a7 get defended? (14.Nd2 0–0+=) 14...a6 (14...b6 15.Bb5 0–0 16.c4+=) 15.c4 b6 16.Nd2 0–0 17.g4 (17.Be2 Rd8–/+) 17...Bb7–/+ 18.Bg2 Rfe8 19.g5 Ng4 (19...Nh5 20.Qd1 Qd6 21.Nb1–/+) 20.Bh3 (20.Bg7 Nc5 21.Ke2 Nd3+= (worse is 21...Nh2 22.Bh8 f6 23.Bf6+=)) 20...f5 21.Bg4 (21.gf6 Ndf6 22.Qb1 b5 23.cb5 ab5 24.Ra8 Ba8 25.Bg4 Ng4+=) 21...fg4 22.Bg7 Nc5 23.Bf6 Nd3 24.Ke2 Qd6 25.Rb3 b5 26.Qg1 Nc5 27.Ra3 Qd7 28.Qa1 Nd3–/+ 29.Rf1 Rac8 30.Qd4 Do you see the mate threat? 30...Qe6 31.cb5 ab5 32.Ra7 Rc7 33.Qa1 b4 34.Qa4 Rec8 35.Qb3? Bd5–+ 36.Qa4 Nc5 37.Qa5 Bc4 38.Ke1 Nd3 39.Ke2 Qd7 40.Rc7 Nf4 41.Ke1 Ng2 42.Kd1 The mate threat is Rxd7 42...Bb3 43.Kc1 Rc7 44.Kb1 Qd3 45.Ka1 Qd2 46.Bb2 Qd7 47.Qb4 Ra7 48.Ba3 Threatening mate... how? 48...Qg7 49.Kb1 Rb7 (49...Rb7 50.Qc5 Bc4 51.Kc2 Rc7–+ (51...Bf1?! 52.Qc8 Kf7 53.Qf5 Ke8 54.Qc8 Kf7 55.Qf5 Ke8 56.Qc8 Kf7=)) 0–1. Luzuriaga,Norberto Horacio (2350) – Montella,Salvatore, corr W–Cup12 Gr079, 2000.

5.Nd4 c6

6.c4 dc4 7.e3 (7.Qc2 Nf6+=) 7...b5 (7...Qg6 8.f3–/+) 8.Nc3 f5 (8...Qe5 9.a4 Bb4 10.ab5+=) 9.Ncb5 (better is 9.a4!?=) 9...cb5–/+ 10.Nb5 Qc6 11.Qh5 Kd8 12.Nd4 Qd5 (12...Qd5 13.Rc1 Nf6+=) (55 moves). Thorsell – Storm, corr SSKK Cup, 1980.

6.e3 c5 7.Nb5+/– Qc6 8.a4 (8.Be5 Na6 9.Nd6 Bd6 10.Bg7 Be5 11.Be5 f6+–) 8...a6 (8...Nd7 9.bc5 Ngf6 10.Bf6 Nf6 11.Nd6 Ke7 12.d4 ed3 13.Bd3 Qc5 14.Nc8 Rc8 15.0–0+=) 9.bc5 (9.Be5!? Nd7 10.Nc7 Kd8 11.b5+/–) 9...Qc5= (9...ab5?? 10.Bb5 Nd7 11.Bc6 bc6 12.d4 ed3 13.cd3 Nc5 14.d4+–) 10.Ba3 Qb6 11.Bf8 ab5?? (better is 11...Kf8 12.a5 Qd8=) 12.Bg7+– ba4 13.Bh8 Nc6 14.Na3 Nh6 15.c4 d4 16.ed4 Nd4 17.Bd4 Qd4 18.Nb5 Qe5 19.Ra4 Bd7 (19...Ra6+–) 1–0. Istvanny – WMAD, internet, 2007.

6.e3 a5

7.b5 c5 8.Nb3 a4 9.Nc1 =.

7.b5 c5 8.Nb3 Nf6 9.a4 (9.d3 Bg4 10.Be2 Be2 11.Qe2 ed3 12.cd3 a4=) 9...Bg4 10.Be2 Be2 11.Qe2 Nbd7 (11...Be7 12.d4 c4 13.Ba3=) 12.d4 (12.0–0 Qc7=) 12...c4=+ 13.N3d2 Qe6 14.h3 (14.0–0 Qg4 15.Qg4 Ng4=+) 14...Bb4 15.c3 Bd6 16.Nf1 (16.Ba3 0–0=+) 16...Qf5 (16...0–0 17.Ba3=+) 17.Ba3 Bc7 18.Nbd2 (18.Nfd2 0–0–0=+) 18...Qg6–/+ 19.g3 (19.Rg1 Rd8–/+) 19...0–0–0 20.Nc4 (better is 20.Be7!? Rde8 21.Bf6 Nf6 22.Rb1=+) 20...dc4–+ 21.Qc4 Nb6 22.Qb3 h5 23.c4 Qf5 24.Be7 Rde8 25.Bf6–/+ gf6 26.c5 Nd5 27.b6 Bb8 28.Nd2 Nb4 29.Ke2 Re7 30.Rag1 Rg8 31.Qc4 Rd7 32.Rb1 Rgd8 33.Rb4=+ ab4 34.c6 Re7 35.Rc1 Bd6–/+ 36.Rc2 bc6 37.Nb3? Qf3 38.Ke1 Bg3 39.Qc6 Kb8 40.Nc5 Bf2 41.Rf2 Qe3 42.Kf1 Qc1 43.Ke2 Qc4 44.Ke1 Rd4 (45.Nd7 Red7 46.Qc4 Rc4–+) 0–1. Andersson,Lars H – Lindeberg,Stig, corr SSKK 1–453, 1993.

7.b5 c5 8.Ne2 Nf6 =.

7.c4 ab4 8.ab4 (better is 8.c5!? Qe7 9.ab4 Ra1 10.Ba1=) 8...Ra1=+ 9.Ba1 dc4 10.Bc4 Qb4 11.Qb3 (11.Qc2!? Ne7 12.Qa2=+) 11...Qb3–/+ 12.Bb3 Bd7 13.Nc3 c5 (13...Nf6 14.f3 ef3 15.Nf3–/+) 14.Ndb5 f5 15.Nc7 Kd8 16.Ne6 Be6 17.Be6 Nh6 18.0–0 Na6 19.Nb5 (19.Rb1 Nb4=+) 19...Nc7 (19...Nb4 20.f3 Ke7 21.Bc8 ef3 22.Rf3=) 20.Nc7–/+ Kc7 21.h3 (21.Be5 Kc6=+) 21...b5 22.Be5 Bd6 23.Bg7 Re8 24.Bd5 Ng8 (24...Bf8 25.Bf8 Rf8 26.f3 ef3 27.Bf3=+) 25.f3= ef3 26.Rf3 Ne7 27.Be6 c4 (27...Ng6 28.Bf7 Rb8 29.Rf5+/–) 28.Kf1 Bb4 (29.Ke2 Kd6=; 28...Ng6 29.Bf7 (< 29.Bf5 Nh4–/+) 29...Re4 30.Rf5+=). Pogorzelski,Wlodzimierz – Storm,Ingemar, corr SSKK 2–751, 1991.

7.c4 dc4 8.Bc4 ab4 9.d3 –/+.

6.e3 Nf6

7.c4 (--> 5.Nd4 Nf6 6.c4 c6 7.e3).

7.Be2 Qc7 8.0–0 Bd6 9.f4 0–0 10.Qe1 b6 11.Qg3 Qe7 12.Nc3 Qd7 13.Rab1 a6 14.Na4 Bc7 15.Rf2 Ng4 16.Nb3 f6 17.Rff1 Nh6 18.Nc3 Nf5 19.Qh3 Rd8 (better is 19...Qf7!?=) 20.Bg4 +/–.

6.e3 Qg6

7.d3 ed3 8.Qd3 Nf6 9.c4 dc4 10.Qg6 hg6 11.Bc4 Bd6 12.h3 b5 13.Bb3 a5 14.ba5 Ra5 15.a4 Bb4 16.Bc3 (16.Ke2 ba4 17.Ra4 Ba6 18.Kf3 Ra4 19.Ba4 Bc4+=) 16...Bc3 17.Nc3 b4 18.Nd1 c5 19.Nb5 0–0 (19...Ke7 20.Nb2 Bb7 21.Bf7 Bg2 22.Rg1=+) 20.Rc1 (20.Nb2 Bb7=) 20...Nbd7= 21.Nb2 Bb7 22.Nc4 Ra6 (< 22...Bg2 23.Rh2 Rb5 24.ab5+/– (< 24.Rg2 Rbb8=)) 23.f3 Bd5 24.0–0 Bc4 (24...Nb6!?–/+) 25.Rc4= Nd5 26.Rd1 N5b6 27.Rf4 (27.Rc2 Rd8=) 27...Raa8 28.Nc7 Rac8 (28...Ra7 29.Nd5 Nd5 30.Rd5+=) 29.Nd5 (better is 29.Ne6!? c4 30.Nf8 Nf8 31.a5+–) 29...Nd5= 30.Rd5 Nf6 31.Rd1 Rfe8 (31...Rcd8 32.Rc4 Rd1 33.Bd1=) 32.Rc1 Rc7 (32...Kf8!?=) 33.Rb4+/– Re3 34.Rb5 Nd7 35.a5 Ra7 36.Bd5 (36.Kf2!? Re8 37.Bd5+/–) 36...Ra3+= 37.Bc6 Ne5 38.Rcc5 Nc6 39.Rc6 R3a5 ½–½. Schulze,Hanjo – Keilhack,Harald (2330), Nuernberg op, 1990.

7.d3 Nf6 8.c4 dc4 9.dc4 Be7 =.

7.d3 Nf6 8.Nd2 Bd6 (8...ed3 9.cd3 Bd6 10.N4f3=) 9.c4 dc4 (9...0–0 10.cd5 cd5 11.Nb5+=) 10.Nc4+= Bc7 11.Qc2 ed3 12.Qd3 0–0 13.Qg6 hg6 14.g3 Nbd7 15.Bg2 Nb6 (15...Rd8 16.h3+=) 16.Nb6 Bb6 ½–½. Skalazubov,Aliaksandr – Bhat,Vinay S (2395), Wch U16 Oropesa del Mar, 2000.

7.d3 Nf6 8.de4 Ne4 9.Nd2 Be7 (9...Bd6 10.Rc1=) 10.Ne2 0–0 11.Nf4 Qg5 12.Ne4 (12.h4 Qg4+=) 12...de4 13.Qh5 a5 14.Qg5 Bg5 15.b5 (15.Nh5 Bg4 16.Ng3 Re8+=) 15...cb5 (15...Bf4 16.ef4 cb5 17.Bb5=) 16.Nd5 Rd8 17.Nc7 ½–½. Boehnke,Hartmut (1985) – Wolf,Wolfgang (2285), GER–ch37 V8 email, 2005.

7.d3 Bg4 8.f3 ef3 9.gf3 Bd7 =.

7.Ne2 Bd6=+ 8.d3 (8.Nf4 Qg5=) 8...Nf6 9.de4 Ne4 10.c4 dc4 11.f3 c3 12.Nbc3 Nc3 13.Bc3 0–0 14.Ra2 Re8 15.Rd2 Bc7 16.Rd4 a5 17.ba5 Qg5 (17...Ba5 18.Ba5 Ra5 19.Rd8=) 18.e4 (18.f4 Qh4 19.g3 Qe7–/+) 18...Ba5=+ 19.a4 Be6 (19...b5 20.Qd3=+) 20.Qd2 Qd2 (20...Bc3 21.Nc3 (< 21.Qc3 c5 22.Rd6 Ra4–/+) 21...Qe7 22.Qc2=+) 21.Rd2 Bc7=+ (22.Nd4 Ra4 23.Ne6 Re6–/+) 0–1. Boehnke,Hartmut (2030) – Schalkwijk,Peter, DESC, 2002.

7.g3 Bd6 8.Bg2 Nf6 9.0–0 h5 10.f4 (10.h4 Bg4 11.Qe1 0–0–/+) 10...h4–/+ 11.Qe1 Nh5 12.Ne2 (12.gh4 Bh3 13.Qf2 a5–/+) 12...hg3 13.Ng3 Nf6 14.Bf6 (better is 14.Nh1!?–+) 14...Qf6 (14...gf6?! 15.Rf2–/+) 15.Nc3 Qh6 16.Kf2 g5 (16...Qh2? 17.Rh1+–) 17.f5? (17.Nge4 de4 18.Ne4–+) 17...Qh2 18.Nce2 (18.Nge4 de4 19.Ne4 Bf5 20.Nd6 Qd6 21.e4–+) 18...Rh4 (better is 18...Rh3 19.Rh1 Bg3 20.Ng3 Qg3 21.Kg1 Rh1 22.Kh1 Qe5–+) 19.Rh1+– Qh1 20.Bh1 Nd7 21.d3 ed3 22.cd3 Ne5 23.Qc3 Ng4 24.Kf3 Bd7 25.Bg2 (better is 25.Qg7!? 0–0–0 26.Qg5 Ne5 27.Kg2+–) 25...Nh2 26.Kf2 0–0–0? (26...Ng4 27.Kg1 Ne3 28.Qg7+–) 27.b5 (better is 27.Bd5 Ng4 28.Kf3+–) 27...Ng4 28.Kg1 Ne3 29.bc6 Bc6 30.Qf6 Rg4 (better is 30...Nc2 31.Rd1 Rg4+–) 31.Kh2?? (better is 31.Qf7 Ng2 32.Kg2+–) 31...Rg3!–+ 32.Qf7 (32.Ng3 Ng4 Double attack) 32...Rg2 33.Kh3 (33.Kh1 Rh8 34.Qh5 Rh5) 33...Rh2 0–1. mikebaldini (1660) – knightchaser (1810), gameknot.com, 2015.

5.Nd4 Nc6

6.c4 Nd4=+ 7.Bd4 Be7?? (better is 7...dc4 8.e3 Qg6=+) 8.Bg7+– Bf6 9.Bh8 Bh8 10.Nc3 Bd7 (10...dc4 11.Ne4 Qd4 12.Nc3 Qc3 13.dc3 Bc3 14.Qd2 Bd2 15.Kd2+–) 11.e3 (11.cd5 Ne7 12.Ne4 Qe5+–) 11...0–0–0 (better is 11...d4 12.ed4 Bd4+–) 12.cd5 Ne7 13.Rc1 (better is 13.Ne4 Qd5 14.Nc3 Bc3 15.dc3+–) 13...c6 (13...Bc3 14.dc3 Qd5 15.Qd5 Nd5+–) 14.dc6 Bc6 (14...bc6 15.Ne4 Qe5 16.Nc5+–) 15.b5 Bc3 16.Rc3 (16.bc6?? Bd2 17.Qd2 Qd2) 16...Nd5 17.Rc1 1–0. ARMAGEDON_8 – AllKnighter, ChessWorld.net, 2003.

6.e3 a5 =.

6.e3 a6 =.

6.e3 Nge7 7.c4 (7.Nc6 Qc6 8.Nc3 a6=) 7...Nd4 8.c5 Qg6 9.Bd4 c6 (9...Nc6 10.Bb2=+) 10.Nc3= Nf5 11.Be5 Be7 (11...Nh4 12.Bg3 Be7 13.Ne2=+) 12.Ne2 (12.d4 ed3 13.Qd3 Qe6=) 12...0–0 (12...Qe6 13.Bc3=+) 13.Nf4= Qg5 14.Qh5 (14.d4 Bf6 15.Bf6 Qf6=) 14...g6 (14...Qh5!? 15.Nh5 f6=+) 15.Qg5+= Bg5 16.Ne2 (16.d3 f6 17.Bb2 ed3 18.Nd3 Bh4+=) 16...Re8 17.Bb2 a5 (17...b6 18.Rb1=) 18.g3 (18.Nd4 Bf6=) 18...ab4=+ 19.ab4 Ra1 20.Ba1 Be6 21.Bg2 Ra8 22.0–0 (22.Bc3 Ra2=) 22...Ng7 (22...Ra2 23.Bc3 h6 24.Ra1 Ra1 25.Ba1=) 23.Bc3 (23.f3 Ra2 24.fe4 Rd2=) 23...Bg4 (23...Ra2 24.h4 Be7 25.f3=) 24.Nc1 (24.f3 ef3 25.Bf3 Bf3 26.Rf3 f5=) ½–½. Ziese,Gerhard – Hind,Alan, corr 3GMM–22, 1995.

6.e3 Nf6 7.Nc6 bc6 A) 8.Nc3 Be7 (8...a5 9.b5 Be7 10.Be2 0–0 11.0–0 Rb8 12.a4 h6) 9.Be2 0–0 10.0–0 a5 11.b5 Bd7 12.a4 Rfe8; B) 8.Be2 a5 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Qb4 12.Na2 Qd6; C) 8.c4 Be7 (8...a5 9.Nc3 Be7 10.cd5 0–0 11.dc6 ab4 12.ab4 Ra1) 9.cd5 cd5 10.Nc3 0–0 11.Rc1 c6 12.Na4 Nd7.

6.e3 Nf6 7.Nc6 Qc6 8.Be5 (8.Be2 Be7 (8...Bd7 9.0–0 a5 10.b5 Qe6 11.Bd4 Bd6 12.Nc3 Be5) 9.Be5 0–0 10.Nc3 Be6 11.0–0 a6 12.Rb1 Bd6; 8.Bd4 Be7 (8...Qe6 9.Nc3 Bd6 10.f4 0–0 11.Nb5 b6 12.Nd6 Qd6) 9.Nc3 0–0 10.Bb5 Qe6 11.f4 c6 12.Be2 a5; 8.Nc3 a6 9.Be2 Bd6 10.b5 Qd7 11.0–0 0–0 12.f3 ef3) 8...Be7 (8...Bg4 9.f3 ef3 10.gf3 Bd7 11.Nc3 Qe6 12.Bc7 d4) 9.Nc3 0–0 10.Bb5 (10.Be2 a6 11.0–0 Be6 12.Bd4 a5) 10...Qb6 11.Be2 (11.0–0 a5 12.Be2 Be6) 11...c6 (11...Be6 12.0–0 a5) 12.0–0 Qd8 (12...a5=) 13.d3 Bf5 14.de4 Ne4 15.Ne4 Be4 16.Bd3 Bd3 17.Qd3 Bf6 18.Bf6 Qf6 19.Rfd1 a6 20.g3 Rfe8 21.c4 Rad8 22.Rac1 dc4 23.Qc4 Re6 24.Qc5 Red6 25.Rd6 Qd6 26.Rc4 Qd1 27.Kg2 Qd5 28.Qd5 Rd5 (worse is 28...cd5 29.Rc7 b6 30.Ra7+/–) 29.Kf3 Kf8 30.Ke2 Ke7 31.e4 Rd7 32.h4 h5 33.f3 g6 34.Rc1 Ke6 35.g4 hg4 36.fg4 f5 37.ef5 gf5 38.g5 Rd4 39.Rh1 Rg4 40.Kf3 Kf7 41.h5 Rg5 42.h6 Kg8 43.h7 Kh8 44.Kf4 Rg2 45.Kf5 Rg3 46.a4 1–0. rickdragon (2560) – captjamestkirk (2520), net–chess.com, 2014.

6.e3 Nf6 7.d3 A) 7...Be6 8.Nd2 (8.Ne6 Qe6 9.Nd2 0–0–0 10.de4 Ne4 11.Be2 Rg8 12.0–0 Be7) 8...Nd4 (8...0–0–0 9.Be2 Be7 10.0–0 Nd4 11.Bd4 h5 12.h3 Kb8) 9.Bd4 0–0–0 10.Be2 h5 11.0–0 Be7 12.h3 Kb8; B) 7...Bg4 8.Be2 Nd4 (8...Be2 9.Qe2 Nd4 10.Bd4 a5 11.b5 c5 12.bc6 Qc6) 9.Bd4 Be2 10.Qe2 a5 11.de4 Ne4 12.f3 Ng5; C) 7...Be7 8.Nb5 Qd8 9.de4 de4 10.Qd8 Bd8 11.Nd2 a5 12.ba5 Ra5; D) 7...Nd4 8.Bd4 a5 (8...Be7 9.de4 de4 10.Nd2 0–0 11.Be2 Bf5 12.0–0 Rad8) 9.de4 Ne4 10.f3 Ng5 11.Nc3 Ne6 12.Nb5 Qd8.

6.e3 Nf6 7.Be2 A) 7...a5 8.b5 (8.Nb5 Qd8 9.Bf6 gf6 10.N1c3 Be6 11.ba5 Ra5 12.0–0 f5) 8...Nd4 (8...Ne5 9.0–0 Be7 10.f4 ef3 11.Nf3 Nf3 12.Bf3 0–0) 9.Bd4 Be7 10.0–0 0–0 11.Nc3 h6 12.f3 Be6; B) 7...Be7 B1) 8.0–0 0–0 (8...a5 9.b5 Ne5 10.f4 ef3 11.Nf3 Nf3 12.Bf3 0–0) 9.Nc6 bc6 10.Nc3 a5 11.b5 Bd7 12.a4 c5; B2) 8.Nb5 Qd8 9.N1c3 0–0 10.0–0 a6 11.Nd4 Nd4 12.ed4 a5; B3) 8.Nc6 bc6 9.Nc3 a5 10.b5 0–0 11.0–0 Bd7 12.a4 c5.

6.Nc6 Qc6

7.Nc3 d4 8.Nb1 =+.

7.Nc3 Nf6 8.e3 Qb6 (8...a6 9.Be2=) 9.f3 (9.Bb5 c6 10.Be2 Bd6=) 9...Be7 10.fe4 de4 11.Bc4 Be6 12.Be6 Qe6 13.0–0 c6 14.Ne2 Bd6 (14...0–0–0 15.Nd4 Qd7 16.d3=) 15.Bf6 gf6 16.Nd4 Qe5 17.Rf4 Rg8 (17...h5 18.d3 ed3 19.Qd3+=) 18.Qf1 (18.Nf5 0–0–0=) 18...0–0–0 19.g3 Qh5 20.Nf5 (20.Re4!? Bg3 21.hg3 Rd4 22.Rd4 (< 22.ed4 Rg3 23.Qg2 Qg6–+) 22...Rg3 23.Kf2 Rf3 24.Kg2 Rf1 25.Rf1 Qg6 26.Kh3 Qc2 27.Rf6=) ½–½. Trokenheim,Marek – Chareyre, corr SWE–FRA, 1995.

7.e3 Nf6 8.b5 (8.Be2 Be7=) 8...Qd6+= 9.c4 dc4 10.Bc4 Bg4 (10...Bf5 11.f3=) 11.Qb3 Qd7 (11...Bh5 12.d3=) 12.Bf6 gf6 13.Bd5 (13.Ra2!?+=) 13...Be6= 14.Be6 fe6 15.Nc3 (15.0–0 f5=) 15...f5 16.0–0 0–0–0 17.f3 Bg7 18.Rab1 (18.Rad1!? ef3 19.Rf3 Bc3 20.Qc3 Qb5 21.Rc1+=) 18...Qd2–/+ 19.Qe6 (19.Na4!? Rd5 20.Rbd1+=) 19...Kb8–+ 20.Nd1 ef3 21.Rf3? (better is 21.Nf2–+) 21...Qc2 22.Qf5 Rd1 23.Rd1 Qd1 24.Rf1 Qb3 25.e4 (25.Qg5 Bb2–+) 25...Qa3 26.Re1 (26.Qd5 Qe7–+) 26...Bd4 27.Kh1 Rf8 (27...Rf8 28.Qg5 Qd3–+) 0–1. Bendig,Frank – Seack,Ingo, BdF, 1988.

6.e3 Nd4

7.Bd4 c6 8.d3 Nf6 (8...Qg6 9.de4 de4 10.Nd2=) 9.Nd2 (9.de4 de4 10.Nc3 Qe6=) 9...Bg4 (9...Bf5 10.de4 de4 11.Be2=) 10.Be2 Be2 11.Qe2 Be7 (11...ed3 12.Qd3 a5 13.0–0=) 12.de4+= de4 13.0–0 (13.Rd1 Qe6+=) 13...Qd5 (13...Qe6 14.c4=) 14.c4+= Qf5 (14...Qe6 15.Rad1+=) 15.f3 ef3 16.Nf3 0–0 (16...Qg4 17.h3 Qe4 18.Nd2+=) 17.Nh4 Qg4 18.Qe1 Bd8 19.Nf5 Qg5 (19...a5 20.Rb1+/–) 20.Rf3 h6 (better is 20...g6!? 21.Nd6 b5+/–) 21.Ng7! Ne4 (21...Qg7 22.Rg3) 22.Nf5 Kh7 23.Qe2 (23.Ng3 Nd6+–). pierred – Jarry, chessmaniac.com, 2006.

7.Bd4 Qc6 8.d3 Qg6 9.de4 Qe6? (better is 9...de4 10.Nc3 Bd7+=) 10.ed5+– Qd5 11.c4 Qc6 12.Nc3 Nf6 (12...Be6 13.b5 Qd7 14.Qf3+/–) 13.Bd3?? (better is 13.Nb5 a6 14.Na7+–) 13…Qg2 1–0. Fournier,Frederic (2010) – pichica69 (2115), Echecs21 (8/0), 2003.

7.Bd4 Nf6 8.Nc3 Bd7 (8...Be7 9.Nb5 Qc6 10.Na7+/–) 9.d3 (9.Nb5 Bb5 10.Bb5 c6=) 9...ed3 (9...Bg4 10.Be2 Be2 11.Qe2+=) 10.Bd3+= Be7 (10...Bg4 11.Nb5 Bd1 12.Nd6 Bd6 13.Rd1+=) 11.0–0 (11.Nb5 Bb5 12.Bb5 c6+=) 11...0–0 (11...Ng4 12.f4=) 12.Bc5 (12.Nb5 Bb5 13.Bb5 a5=) 12...Qe5 13.Bd4 (13.Be7 Qe7 14.Qf3 Qe5=) 13...Qd6 14.Bc5 (14.Nb5!? Bb5 15.Bb5=) 14…Qe5= ½–½. Woschkat,Karl_Heinz – Smits,Cees, compuserve, 1996.

7.Bd4 Nf6 8.Be2 Be7 9.0–0 0–0 10.f4 b6 11.c4 c5 12.bc5 bc5 13.Bb2 (better is 13.Be5!? Qe6 14.Qc2=) 13...d4–/+ 14.d3 de3 15.de4 Ne4 16.Nc3? (better is 16.Qd6!? Bd6 17.Bc1+=) 16...Nd2–+ 17.Nd5 Nf1 18.Qf1 Be6 19.Ne3 (19.Be5 Qd7 20.Ne3 Rad8–+) 19...Rab8 (better is 19...Qd2 20.Nd1 Bd6–+) 20.Rc1?? (better is 20.Be5 Qd2 21.Nd5 Bd5 22.cd5–/+) 20...Rb2–+ 21.Bf3 (21.Rd1 Qa6 22.Qf3 Bf6–+) 21...Qf4 22.Nd5 Bd5 23.cd5 Bf6 24.Kh1 Be5 25.g3 Qd2 26.Qg1 Bd4 (26...Bd4 27.Rd1 Bg1 28.Rd2 Rd2–+) 0–1. Fournier,Frederic – Fejm3xpp, Partie evaluee, 3m + 0s, 2007.

7.Bd4 Qg6 8.Nc3!? c6 9.Rc1 =.

7.Bd4 Qg6 8.c4 dc4=+ 9.Nc3 c6 10.Qc2 f5 11.Ne2 Qf7 12.Nf4 b5 13.Be2 Nf6 14.h4 (14.0–0 Bd6=+) 14...Bd7 (14...a5 15.ba5 Ra5 16.a4–/+) 15.Qc3 (15.0–0 a5–/+) 15...Be7 16.a4 0–0 17.ab5 cb5 18.g3 (18.h5 Rfd8–/+) 18...Bc6 (18...Bd6 19.Bf6 Qf6 20.Qf6 Rf6 21.Nd5–+) 19.0–0 a6 20.Ra5 Nd5 21.Nd5 Bd5 22.Rfa1 Bb7 23.Qb2 (23.h5 Qe6–/+) 23...Rfc8 24.Bc3 Qf8 25.Kh2 Rc6 26.Rg1 Rh6 27.Raa1 Rd8 28.Bf1 Qf7 29.Bh3 Bc8 30.Kg2 (30.Rgc1 Rhd6–+) 30...Rd3 31.Kf1 Rhd6 32.Ke1 Bf6 33.Rc1 (33.Bf6 Rf6 34.Ra3 Qd7–+) 33...Rd2 34.Qd2 Rd2 35.Bd2 (35.Kd2 Be7–+) 35...Qf8 36.Ke2 Qd6 37.Bf1 (37.Ke1–+) 37...c3! 38.Bc3 (38.Rc3 Bc3) 38...Qd3 39.Ke1 Bc3 40.Rc3 Qc3 (41.Ke2 Kf7 42.Kd1 Qb4 43.Kc2 Be6 44.Bg2 Bb3 45.Kb2 Ba4 46.Kc1 Qc3 47.Kb1 Qc2 48.Ka1 Bb3 49.Be4 Qa2#) 0–1. Gielen,W – Lucas,Fred, Dieren op–B, 1990.

7.Bd4 Qg6 8.d3 Nf6 9.Nd2 (9.Nc3 c6=) 9...Be7 10.c4 ed3 11.cd5 Nd5 12.Nf3 Nf6 (better is 12...Nb4!? 13.ab4 Bb4 14.Nd2 c5=) 13.Bd3+= Ne4 14.Qc2 Bf5 15.0–0 Ng5 16.Qa4 Kf8 17.Ne5 Nf3 18.Nf3 Bd3 19.Ne5 Qa6 20.Qb3 Bg6 21.Ng6 hg6 22.Qc3 Kg8 23.Bg7 Rh5 24.Be5 Qe6 25.Bg3 Bf6 26.Qc7 Ba1 27.Qb7 Rd8 28.Ra1 Qa2 29.Rf1 Qa3 30.h3 Qa4 31.Rc1 Rd1 32.Rd1 Qd1 33.Kh2 Qa1 34.Qe7 a6 35.Bd6 Qg7 36.f4 f6?? 37.Qe8+– Kh7 38.Bf8 Qc7 39.Be7 Qc4 40.Bf6 Qg8 41.Qe7 Kh6 42.Bg5 Rg5 43.fg5 Kh5 44.Qe4 Qb8 45.Qf4 Qf4 46.ef4 Kh4 47.g3 Kh5 48.g4 Kh4 49.Kg2 a5 50.f5 gf5 51.ba5 Kg5 52.gf5 Kf5 53.a6 Kg5 54.a7 Kf6 55.a8Q Kf7 56.Qc6 Ke7 57.Kf3 Kf7 58.Kf4 Ke7 59.Kf5 Kd8 60.Qb7 Ke8 61.Ke6 Kf8 62.Qf7 1–0. Fournier,Frederic (1860) – Sollai,Solene (2000), Open janvier echecsemail, 2004.

5.Nd4 Bd7

6.e3 a5 7.b5 c5 8.bc6 Nc6 9.Bb5 Nf6 10.a4 Qc7 11.Nc6 bc6 12.Bf6 cb5 13.Bd4 b4 14.0–0 f6 15.Qh5 Kd8 16.Qd5 Ra6 17.Rc1 Bd6 18.Qe4 Bh2 19.Kh1 Bd6 20.c4 Bc6 21.Qh4 Be5 22.Be5 Qe5 23.d4 Qf5 24.d5 Bd7 25.Nd2 g5 26.Qg3 Ke7 27.e4 Qe5 28.Qe5 fe5 29.Nb3 Raa8 30.c5 Rhf8 31.f3 h5 32.c6 Bc8 33.Rc5 1–0. MT – obelitz, itsyourturn.com 2000.

6.e3 Nc6?? 7.Nb5+– Qe7 8.Nc7 Kd8 9.Na8 b6 10.Be2 g6 (10...Qd6 11.d3 ed3 12.Bd3 Nce7+–) 11.Bh8 f6 12.Nc3 Qe6 13.Nb5 Bd6 (13...Ne5 14.Na7 Ne7 15.d3 ed3 16.cd3+–) 14.0–0 f5 15.d4 ed3 16.cd3 Nf6 17.Bf6 Qf6 18.Bf3 Be5 19.d4 Bb8 20.Bd5 (better is 20.Rc1 Ne7 21.Nbc7 Bc6+–) 20...Qh4 (20...Ne7 21.Bc4 Bb5 22.Bb5+–) 21.g3 Qh3 22.Bg2 Qg4 23.Qg4 fg4 24.Nc3 Ne7 25.e4 b5 26.d5 (better is 26.f4!? Bc6 27.e5 Bg2 28.Kg2 Kc8+–) 26...Be5 27.Rac1 1–0. Luisa – Timaukel666, playchess.de, 2003. (=1.Nf3 d5 2.b4 Qd6 3.a3 e5 4.Bb2 e4 5.Nd4 Bd7)

6.e3 Nf6 7.c4 (7.Nb5 Qb6 8.Bd4 c5 9.bc5 Bc5 10.Bf6 Bb5 (10...Qf6? 11.Nc7 Kd8 12.Nc3+–) 11.Bg7 Rg8+=) 7...c5 (7...a5 8.b5=) 8.bc5 Qc5 9.cd5 Nd5 (9...Qd5 10.Nc3 Qg5 11.Qc2+=) 10.Be2 (10.d3 ed3 11.Bd3 Nc6+=) 10...Qb6 (10...Nc6 11.d3 Qb6 12.Qd2=+) 11.Qc2 Qg6 12.g3 (12.f3 Qg2 13.Qe4 Ne7=) 12...Nc6 13.d3 (13.f3 Nf6=). Diener,Rudolf – Brandt,J, corr ICCF EU–M–1085, 1994.

5.Nd4 Nf6

6.Nb5 Qb6 7.e3 =.

6.Nb5 Qb6 7.Bf6 Qb5 (7...gf6 8.N1c3 c6 9.f3–+) 8.e3 (8.Nc3 Qc6 9.Bd4 Bg4=) 8...Qc6 9.Be5 (9.Bd4 Nd7=) 9...a6 (9...Nd7 10.Bd4=) 10.Nc3 b5 (10...Nd7 11.Bd4=) 11.a4 ba4 12.b5 (12.Ra4 Nd7 13.Bd4 Nb6 14.Bb6 cb6+/–) 12...Qb7 (12...Qd7 13.Ra4 f6 14.Bf4+=) 13.ba6 (13.Ra4 ab5 14.Ra8 Qa8 15.Nb5 Na6+/–) 13...Na6= 14.Rb1 Nb4 15.Nb5 Ra5 (15...Kd8!? 16.Nc7 Ra7+=) 16.Nc7+= Kd8 17.c3 Bg4 (17...d4 18.ed4 Bg4 19.Rb4 Qc8+–) 18.Qc1 (better is 18.Rb4!? Bb4 19.Qg4+–) 18...d4 (18...Na2 19.Qc2 (19.Rb7 Nc1 20.Bb5 Rb5 21.Rb5 Nd3 22.Kf1 Ne5 23.Nd5 a3–+) 19...Nb4 20.cb4+–) 19.ed4+= Re5 20.de5 Qc7 21.cb4 Qc1 22.Rc1 a3 23.b5 h5 24.Bc4 f6 25.ef6 gf6 26.b6 Bd6 27.b7 h4 28.Bd5 Re8 29.Rc6 Bb8 30.0–0 Re5 31.Rfc1 Kd7 32.Rc8 Rd5 33.Rb8 Rb5 34.Rf8 1–0. Woschkat,Karl_Heinz – Timmons,Art, compuserve, 1996.

6.Nb5 Qd8 7.Be5 Na6 8.e3 (8.N1c3 Be7=) 8...c6 (8...Qe7 9.Bd4=) 9.Nd4 Nc7 (9...Nb8 10.Nc3=) 10.d3 (10.Be2 Bd6 11.Bd6 Qd6=+) 10...a5 11.ba5 (11.de4 de4 12.Bf6 Qf6 13.ba5 Ra5=+) 11...Ra5=+ 12.Be2 Bd6 13.Bd6 Qd6 14.c4 (14.Nb3 Ra4=+) 14...ed3 (14...dc4 15.de4 Be6 16.0–0=+) 15.Bd3= dc4 16.Bc4 c5 (16...b5 17.Qd2 Ra7 18.Bb3=+) 17.Nb3 (17.Qd2 b6 18.Nb3 Qd2 19.N1d2 Ra4=+) 17...Qd1 18.Kd1 Ra4 (18...Ne4 19.Ke2 Ra4 20.Bd3=) 19.Bd3= b6 20.Nc3 Ra7 21.Nd2 0–0 (21...Ke7 22.Kc2=+) 22.Kc2= Ng4 (22...Rd8 23.Rhd1 Nfd5 24.Nf3=) 23.Rhb1 Nf2 24.Rb6 Nd3 25.Kd3 Rd8 26.Kc2 Ba6 27.a4 Bd3 28.Kb2 Kf8 29.a5 Rda8 30.e4 (30.Rc6 Ne6=) 30...Ra5 31.Ra5 Ra5 32.Nb3 Ra7 33.Nc5 Bf1 34.g4 f6 35.h4 h6 (35...Bg2 36.Rd6 Ra5 37.Rc6+=) 36.Nd1 (36.Rc6 Kf7=) 36...Ra5 37.Rc6 Na6 38.Na6 (38.Rc8 Kf7 39.Na6 Ba6 40.Rc7 Kg6 41.h5 Kh7=) 38…Ra6 ½–½. Zedtler,Uwe (2110) – Buttkus,Andre, DESC, 2001.

6.Nb5 Qd8 7.Bf6 gf6 8.Nd4 a5 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 c6 12.Qa4 Qd6 13.b5 Bg7 14.e3 0–0 15.b6 Nd7 16.Qa5 Nc5 (16...Qc5 17.Qc5 Nc5 18.Be2=) 17.f3 (17.Nce2 Ne6=) 17...f5= 18.g3 Bd4 19.ed4 Ne6 20.fe4 fe4 21.Qa4 Qd8 22.Qb4 Ng5 23.Bg2 Bg4 24.0–0 Bf3 25.d3 Re8 26.de4 de4 27.Rf2?? (better is 27.Kh1!=+) 27...Bg2–+ 28.Kg2 e3 29.Rf1 (29.Re2 Qf6 30.h4–+) 29...e2 30.Re1 (30.d5 Qd7 31.g4–+) 30...Qf6 31.Qf8 (31.h4 Qf3 32.Kg1 Qg3 33.Kh1 Nf3 34.Qf8 Kf8 35.Ne2 Qh2) 31...Kf8 (32.h3 Qf3 33.Kh2 Qf2 34.Kh1 Nf3 35.Ne2 Qh2) 0–1. themonkey (2100) – PLB, GameColony.com, 2002.

6.c4 c5 7.Nb5 (7.bc5 Qc5 8.cd5 Qd5=) 7...Qc6 8.Bf6 (8.Be5 Na6 9.N5c3 cb4 (worse is 9...dc4 10.b5 Qe6 11.Bf6+–) 10.ab4 Qe6 (worse is 10...Qc4 11.Bf6 gf6 12.e3 Qb4 13.Ba6+/–; 10...dc4? 11.b5 Qc5 12.Bf6+–) 11.Bf6 Qf6=) 8...gf6+= (worse is 8...Qf6 9.N1c3 Na6 10.Nd5+/–) 9.Qa4 Bd7 10.N1c3 dc4 11.bc5 Qc5 12.e3 Na6 (better is 12...a6!? 13.Bc4 Ra7–/+) 13.Bc4 Bc6 (13...Qe5 14.f4 ef3 15.gf3+=) 14.Bd5 (14.Ne4 Qe5 15.Nec3 Nc5+–) 14...f5 15.0–0 (15.f3 Bg7 16.Bc6 bc6+/–) 15...Bg7 (15...Rd8!? 16.Bc6 Qc6+=) 16.Bc6+/– bc6 (16...Qc6 17.Nd6 Kf8 18.Qc6 bc6 19.Nf5+/–) 17.Qa6 (17.Rac1 Rd8 18.Nd4 Bd4 19.ed4 Qb6 20.Ne4 Rd4 21.Nf6 Ke7 22.Rfe1 Kf6 23.Rc6 Kg7 24.Qa6 Qa6 25.Ra6 Rd2 26.Ra7 Re8+/–) 17...cb5+/– 18.Rac1 (18.Rab1 0–0+/–) 18...Bc3 19.Rc3 (19.dc3?! Qb6 20.Qb6 ab6=) 19...Qb6 20.Qb6 ab6 21.Rb1 Ra5?? (better is 21...Ke7+/–) 22.Rc8+– (22.Rc8 Ke7 23.Rh8 Ra3 24.Kf1+–) 1–0. Vehre,John L Jr – Ryan,Randy, corr USA, 1987.

6.c4! dc4

7.e3 a5 8.Qa4 Qd7 (8...Bd7 9.b5=+) 9.b5= Qg4 (9...c5 10.bc6 Nc6 11.Nc6 (< 11.Bc4 Nd4 12.Qd7 Bd7 13.Bd4 Rc8–/+) 11...Qc6 12.Qc6 bc6 13.Bc4=) 10.Qc4 Bd6 11.h3 Qg5 12.Nc3 (12.d3 0–0=) 12...Nbd7=+ 13.h4 (13.Rc1 Ne5 14.Qb3 Nd3 15.Bd3 Qg2–/+ (15...ed3?! 16.g4=+)) 13...Qg6 (13...Qg4 14.d3=+) 14.Nd5 (14.h5 Qg5=) 14...Nd5–/+ 15.Qd5 Nf6 (15...0–0 16.h5 Qg4 17.d3=+) 16.Qg5= Bg4 17.Bc4 Qg5 18.hg5 Nd7 19.Rh4 (19.d3 Ne5 20.g6 fg6–/+ (20...ed3?! 21.gf7 Kf8 22.Bd5=+)) 19...Ne5=+ 20.Be2 Be2 (20...h5 21.gh6 Rh6 22.Rh6 gh6 23.f3 ef3 24.gf3=) 21.Ke2 Nc4 22.Re4 Kd7 23.Bc1 Rae8 (23...c5 24.Nf3 Nb6 25.Bb2+/–) 24.Re8+/– Re8 25.Kd3 Ne5= 26.Kc3 Ng4 27.f3 Nf2 28.f4 a4 29.Ra2 f6 30.gf6 gf6 31.Nf3 Rg8 32.Ne1 Re8 33.Nd3 Ne4 34.Kd4 f5 35.Rc2 Rg8 36.Ne1 Be7 37.d3+/– Nd6 38.Kc5 b6 39.Kb4+– Ra8 40.Ra2 Nb5 41.Kc4 Nd6=+ 42.Kc3 Rg8 43.Kd2 c5 44.Rc2 b5 45.Bb2 b4=+ 46.Kc1 ½–½. Borrmann,Fritz – Stanitz,Antal, corr sok, 1995.

7.e3 a5 8.Bc4 Be7 9.b5 Nbd7 10.f4 (10.Be2 Nc5=) 10...Nc5 11.0–0 0–0 12.a4 Nd5 13.Bd5 Qd5 14.Nc3 Qd8 15.Ba3 f5 16.g4 g6 17.Qc2 Nd3 (17...Kh8!?=) 18.Be7+= Qe7 19.Nd5 Qf7 20.Nc7 Rb8 21.b6 fg4 22.Qc3 Bf5 23.Qa5 Qe7 24.Qc3 Rf7 25.a5 Qd8? (25...Qh4 26.Ne2+= (26.Nf5 gf5 27.Qc4 g3 28.hg3 Qg3 29.Kh1 Qh3 30.Kg1 Qg4 31.Kh1 Qh5 32.Kg2 Kh8 33.Qc3 Rg7 34.Qg7 Kg7 35.Ne6 Kf6–+)) 26.Ne2 (better is 26.a6 ba6 27.Nc6–/+ (worse is 27.Ra6 Qh4 28.Nf5 gf5–/+)) 26...Qd6 27.Ra4 1–0. de Visser,Arnold W (1985) – Cuccumini,Vittorio (2060), It–Ned ICCF, 2012.

7.e3 Nc6 8.Bc4 Nd4 9.Bd4 a5 10.Nc3 ab4 11.ab4 Ra1 12.Qa1 Qb4 ½–½. Benassi – Plock, corr friendly 1999.

7.e3 Nbd7 8.Bc4 Nb6 9.Be2 =.

7.e3 Be6 8.Qc2! idea cd.

7.e3 Be7 8.Bc4= 0–0 9.Nc3 idea Qc2 +=.

7.e3 Be7 8.Bc4= Nc6 9.Qa4 0–0 10.Nc6 bc6 11.Qb3 (11.0–0 Be6 12.Be6 Qe6=) 11...a5 12.b5 (12.ba5!? Ba6 13.Ra2=) 12...a4–/+ 13.Qc2 cb5 14.Bb5 Ba6 (14...Bd7 15.Bd7 Qd7 16.f3 ef3 17.gf3=+) 15.Ba6 (15.Ba4 Bd3 16.Qc6 Rfb8 17.Bf6 Qf6–/+ (< 17...gf6 18.Qd6 Bd6 19.Nc3=)) 15...Ra6=+ 16.Nc3 Rd8 17.Nb5 (17.f3 ef3 18.gf3 Rc6=+) 17...Qd7 (17...Rc6 18.Bc3 Qd3 19.Qa4 Rc3 20.dc3 Qd2 21.Kf1 Ng4 22.Ra2 Qa2 23.Qc2 Rd1 24.Qd1 Qf2) 18.Rb1 Rc6 19.Nc3 Rc4 (19...Rd6 20.Ne4 Ne4 21.Qe4 Rd2 22.Bd4–/+) 20.h3 (20.f3 ef3 21.gf3 Nd5=+) 20...h6 (20...c6 21.f3=+) 21.Ra1 Nd5 22.0–0 Bf6 23.Rfc1 Ne7 24.Rd1 Nc6 25.Qb1 Rb8 26.Qa2 Na5 27.Rac1 Nb3 28.Rc2 Rb6 29.Qb1 Qd3 30.Kh2 Be5 31.Kg1 f5 32.Kh1 f4 33.Kg1 f3 34.g3 Rg6 35.Kh2 Bg3?? 36.fg3+= Rg3!? 37.Rg1 Rg1=+ 38.Qg1?? Qc2–+ 39.Nd1 Qd2 0–1. Waibel,Ulrich – Faner,Frederic, compuserve, 1995.

7.e3 Be7 8.Bc4= Bg4 9.f3 ef3 10.gf3 =.

7.e3 Bg4 8.Qc2 a5 9.b5 =+.

7.e3 c5

8.bc5= Qc5 9.Qa4 Bd7 10.Qc4 Na6 11.Nb5 (11.Qb3 Qc8=) 11...Qc4 12.Bc4 Be7 13.d3 0–0 (13...ed3 14.Bd3 Nc5 15.Bc4=) 14.N1c3 Nc5 (14...ed3 15.Rd1=) 15.de4+= Nfe4 16.Ne4 Ne4 17.0–0 (17.Nd4 Rfd8=) 17...Rac8 (17...Rfc8 18.Rad1 Bb5 19.Bb5=) 18.Bd3 (18.Rfc1 Rc5 19.Nd4 Rfc8=) 18...Nc5 19.Be2 Nb3 (19...a6 20.Nc3=) 20.Rad1 (20.Na7? Rc2 21.Rab1 Re2 22.Bg7 Kg7 23.Rb3 Rb8–+) 20...Bb5 21.Bb5 Rc2 22.Ba1 Na1 23.Ra1=+ Rd8 24.Rfb1 Bf6 25.Rd1= Rb8 26.Rac1 Rc1 27.Rc1 Bb2 28.Rc7 f6 29.Bc4 Kh8 30.a4 a6 31.g3 b5 32.ab5+/– ab5 33.Bb5 h5 34.Bd3 Rd8 35.Bg6+– Be5 36.Rc4 Rf8 37.Kg2 Rd8 38.Rh4 Kg8 39.Rh5 Rd2 40.Rh4 Rd8 41.Ra4 Kf8 42.Ra7 Kg8 43.f4 Bd6 44.e4 Bf8 45.h4 Bb4 46.Kf3 Rd3 47.Kg4 Rd8 48.e5 fe5 49.fe5 Kf8 50.Rf7 Kg8 51.Rb7 Rd4 52.Kf5 Bf8 53.Bf7 Kh7 54.Rb8 Bb4 55.Bg6 Kh6 56.Rh8# 1–0. Dopper,Johan – Pasma,Gabriel, corr BV–93, 1993.

8.bc5 Qc5 9.Qa4 Bd7 10.Qc4 Nc6 11.Nb5 Qc4 12.Bc4 Rc8 13.Be2 Be7 14.Bf6 gf6 (14...Bf6 15.Nd6 Kd8+=) 15.N5c3=+ Ne5 16.0–0 Bc6 17.Nb5 Bc5 (17...a5 18.f4 ef3 19.gf3 Rg8 20.Kh1 Nf3 21.Rf3 Bf3 22.Bf3 Rc1 23.Bd1 Rd1) 18.Rc1= Bb5 19.Bb5 Ke7 20.Nc3 f5 21.Nd5 Ke6 (21...Kd6!? 22.Nf4 a6=) 22.Nf4+= Kf6 23.d4 ed3 24.Nd3 Nd3 25.Bd3 Rhd8 26.Be2 (26.Rd1 Ke5+=) 26...Rd2 27.Kf1 b6 28.Ke1 ½–½. Maly,Wolfgang – Mukherjee,Ajoy K, corr ICCF–Cup8/9 V038, 1990.

8.bc5 Qc5 9.Qa4 Bd7 10.Qc4 Nc6 11.Nb5 Rc8 12.d4? (12.Qc5 Bc5 13.d3 a6 14.Bf6 gf6=) 12...ed3?? (better is 12...Qc4!? 13.Bc4 Na5–+) 13.Qd3 (13.Qc5 Bc5 14.Bd3 a6 15.Bf6 gf6=) 13...a6 14.N5c3 (14.Bf6 gf6 15.N5c3 Bd6=) 14...Be7 15.Be2 b5 16.0–0 0–0 17.Nd2 Bf5 18.e4 Rfd8–/+ 19.Qc2 Bg6 20.Qc1 Bd6 21.Nb3 Qb6 22.Nd2? Nd4 23.Qd1 Qb7 24.Bd3 Bh5 25.Qe1 a5 26.Ne2? Be2–+ (27.Be2 Nc2 28.Bf6 Ne1 29.Bd8 Rd8 30.Rfe1 Bh2 31.Kh2 Rd2–+) 0–1. Woelfelschneider,Peter – Terblanche,D, CiF, 1988.

8.bc5= Qc5 9.Qa4 Bd7 10.Qc4 Nc6 11.Qc5 Bc5 12.d3 =.

6.c4! c6

7.c5 Qc7 8.e3 b6 9.cb6 ab6 10.d3 =.

7.c5 Qc7 8.e3 Bg4 9.Qc2 a5 10.d3 ab4 11.ab4 Ra1 12.Ba1 b6 13.Nb3 Na6 14.Bc3 (14.Bf6 gf6 15.h3 Bh5= (worse is 15...Nb4 16.Qc3+/–)) 14...bc5 (14...Qb7 15.de4 Ne4 16.N1d2 Nd2 17.Bd2 bc5 18.bc5=) 15.bc5+= Qa7 16.Bf6 gf6 17.Qa2 Qb7 18.d4 Nb4 19.Qa4 Bh6 (19...Rg8 20.Kd2 Nd3 21.Bd3 ed3 22.Nc3+/–) 20.Na5 (20.Nc3 0–0 21.Na5 Nd3 22.Bd3 Qb2+=) 20...Nc2+= 21.Qc2 Qb4 22.Nc3 Qa5 23.Qb2 Ke7 24.Kd2 Qa8 25.Be2 Rb8 Do you see the mate threat? 26.Qa1 Bd7 (26...Be2 27.Ke2 f5 28.Qa8 Ra8 29.f4+=) 27.Qa8+/– Ra8 28.Rb1 f5 29.g3 Bg5 30.Rb7 Kd8 31.Rb6 (31.h4 Be7+=) 31...Ke8 32.Ra6 Ra6 33.Ba6 Ke7 34.Bb7 Kd8 35.Ne2 f6 36.Nf4 (36.Nc3 Kc7 37.Ba6 Be6+=) 36...Bf4 37.ef4 Be8 38.f3 Bd7 39.Ke3 h6 40.h3 Ke8 41.fe4 fe4 42.f5 Kd8 (42...h5 43.Kf4=) 43.Kf4+= Ke7 ½–½. Muri,Heinrich (2340) – Raffaele,Enzo (2405), corr ICCF EM/MN/063 Email, 2003.

7.c5 Qc7 8.e3 Bg4 (8...b6 9.Nb3+=) 9.Be2 Nbd7 (9...Be2 10.Qe2 b6 11.cb6 ab6 12.d3=) 10.Bg4 Ng4 11.Qg4 Ne5 12.Qg3 Nd3 13.Ke2 Qg3 14.hg3 (worse is 14.fg3 Nb2 15.Nc3 Nd3–/+) 14...Nb2 15.Nc3 0–0–0 (15...g6 16.f3 f5 17.g4+=) 16.Rhb1 (16.f3!?+/–) 16...Nc4= 17.a4 (17.Rc1 Re8=) 17...Kc7 (17...a5 18.b5 Kc7 19.Nb3+=) 18.Nb3 (18.a5 g6=) 18...Ne5 (18...Be7 19.d4+=) 19.f4 (19.f3!?=) 19...Nd3+= Black launches an attack 20.Nc1 a5 21.Nd3 ed3 22.Kd3 ab4 23.Rb4 Bc5 24.Rb2 (24.Rb3 d4 25.ed4 Bd4+=) 24...d4–/+ 25.ed4 Rd4 26.Kc2 Rhd8 27.Kd1 Bb4 28.Ke2 Re8 29.Kf2 (29.Kf1 b6–/+) 29...Rd2–+ 30.Rd2 Bc3 31.Rda2 Ba1 32.Ra1 c5 (32...c5 33.g4 Ra8–+) 0–1. Klarius,Gerd – Constantinou,Agathoklis, corr ICCF EU–ch GT237, 1985.

7.e3 a5 8.Qa4 dc4 9.b5 =+.

7.e3 a5 8.Qa4 Nbd7 9.c5= (< 9.ba5 Nb6 10.Qb3 Nc4 11.Bc4 dc4 12.Qc4 Ra5=+) 9...Qb8 10.Qc2 Ne5 11.h3 (11.f4 ef3 12.Nf3 Nf3 13.gf3 ab4 14.ab4 Ra1 15.Ba1 Be7=) 11...Bd7 (11...ab4 12.ab4 Ra1 13.Ba1=) 12.ba5 Ra5 13.Nb3 Ra8 14.Qc3 (14.Be2 Be7=) 14...Ng6 (14...Nc4 15.Bc4 dc4 16.Qc4=) 15.Qb4=+ Be7 16.d3 0–0 17.N1d2 ed3 (17...b5 18.a4=+) 18.Bd3 Ne5 (18...b5 19.a4=) 19.Bc2 (19.Be5 Qe5 20.Nf3 Qb2=+) 19...b5=+ 20.Bd4 Ra4 21.Qc3 Nc4 22.Nc4=+ dc4 23.Na5 b4 24.ab4 Ra1 25.Qa1 Qb4 26.Qc3 Bc5 27.Nc4 Nd5 28.Qb4 Bb4 29.Ke2 c5 30.Bb2 Bb5 31.Bd3 Nc3 32.Bc3 Bc3 33.Rc1 Bb4 34.Ne5+= Be8 35.Ba6 Ba3 36.Rc3 Bb4 37.Rc4 f5 38.Nd3 Rf6=+ 39.Bb7 Bb5 40.Bd5= Kf8 41.Rc2 Bd3 42.Kd3 Ra6 43.g4 Ra3 44.Ke2 f4 45.Rc4 fe3 46.Rf4 Ke7 47.fe3 Kd6 48.Bc4 Bc3 49.Kf3 Bf6 50.Re4 Bg5 51.Re6 Kd7 52.Re5 h6 53.h4 Bh4 54.Rc5 Bg5 55.Re5 Kd6 ½–½. Diener,Rudolf – Kuznetsov, corr (year?).

7.e3 a5 8.ba5 Be7 9.d3 0–0 10.cd5=.

7.e3 a5 8.c5 Qe7 =.

7.e3 a6 8.Qc2 g6 (8...Nbd7!?=) 9.cd5+/– Qd5 10.Nc6! Nbd7 (10...Qc6 11.Qc6) 11.Na7 Kd8 12.Bd4 Qd6 (better is 12...Bd6!?+/–) 13.Nc3+– (< 13.Nc8 Rc8 14.Nc3 Bg7+–) 13...Qc7 14.Nc8 Rc8 15.Qb3 Ne5 (15...Qd6 16.Qf7 Bh6 17.b5+–) 16.Ne4! Ne4 17.Qd5 (17...Bd6 18.Qe4+–) 1–0. Borrmann,Fritz – Weyrich, CiF, 1989.

7.e3 a6 8.Nc3 Nbd7 (8...a5 9.c5 Qd8 10.d3=) 9.Rc1 g6 (9...dc4!? 10.Qc2 Ne5 11.Ne4 Ne4 12.Qe4 Qd5 13.Qd5 cd5=) 10.cd5 cd5 11.Ncb5 (11.d3!?+/–) 11...ab5= 12.Nb5 White gets in control 12...Qb8 13.Qc2 (13.d3 Ke7 14.de4 Bg7 (14...de4 15.Rc8 Qc8 16.Qd6 Ke8 17.Nc7 Qc7 18.Qc7+–) 15.ed5 Rd8+=) 13...Bg7 (13...Kd8 14.Nc7 Ra7 15.Nd5=) 14.Nc7 Kd8 15.Nd5 b6 (15...Nd5 A pinning theme 16.Bg7) 16.Nc7= Bb7 (16...Ra7!? 17.Nb5 Ra8=) 17.Na8+= Qa8 (17...Ba8 18.d3+=) 18.Bb5+/– Qb8 19.d3 Ke7 (19...ed3 20.Qd3 Ke7 21.Bd7+/–) 20.Bd7 Kd7 21.de4 Be4 (21...Rc8!? 22.Qd2 Ke8+/–) 22.Qc4+– Re8?? (22...Bd5 23.Rd1 Rc8 24.Rd5 Nd5 25.Qd5 Ke8+–) 23.Qf7 (better is 23.Bf6 Bf6 24.Qf7 Re7 25.Rd1 Kc7 26.Qf6 Qe8+–) 23...Re7 24.Rd1 Bd5 25.Rd5 Nd5 26.Qd5 Qd6 27.Qd6 Kd6 28.Bg7 Rg7 29.Kd2 (29.Kd2 Ra7 30.Ra1+–) 1–0. Rodriguez – Marcussi,Bartolome Jorge, corr, 1982.

7.e3 a6 8.c5 Qd8 9.d3 ed3 10.Bd3 g6 (10...b6 11.cb6 Qb6 12.Nb3+=) 11.Nd2 Bg7 12.Qc2 0–0 13.N2f3 Re8 14.h4 (14.0–0 Qe7+=) 14...Nbd7 15.h5 Ne4 (15...Nh5 16.Nf5 Bf8 17.Rh5 gh5 18.Ng3=) 16.hg6 fg6 17.0–0–0 (17.Rd1!?+=) 17...a5= 18.Be4 de4?? (better is 18...Re4 19.Kd2 Qe7=) 19.Qc4 Kh8 (19...Kf8 20.Rh7 Nf6+–) 20.Rh7!! Kh7 Decoy theme: h7 21.Rh1 Bh6 (21...Qh4 22.Rh4 Bh6 23.Qf7 Kh8 24.Rh6) 22.Qf7 Kh8 23.Rh6# 1–0. Mroz,Antoni – Krawczyk,Marek, corr Poland, 1987.

7.e3 Bd7 8.cd5 cd5 9.d3 Be7 10.Nd2=.

7.e3 Nbd7 8.cd5 Nd5 9.d3 ed3 10.Bd3=.

7.e3 Qd8 8.cd5 cd5 9.d3 Bg4 10.Qb3+=.

7.e3 Be6 8.cd5 Bd5 9.Nc3 Nbd7 10.Be2 Ne5 11.0–0 Nfd7 (11...a5!?=) 12.Qc2+/– Qg6 13.Nd5 cd5 14.Nb5 Bd6 15.Nc7 Bc7 16.Qc7 Qe6 17.Qb7 (17.Be5!? Ne5 18.Bb5 Nd7 19.Qb7+–) 17...0–0+/– 18.Rac1 Nc4 19.Bc4 dc4 20.Rc2 Nb6 21.f3 Nd5 22.fe4 Qe4 23.Rfc1 c3 24.dc3 Qe3 25.Rf2 (better is 25.Kh1!? Rae8 26.h3+=) 25...Nf4= 26.Qf3 Qf3 27.gf3 Nh3 28.Kf1 Nf2 29.Kf2 Rad8 30.Rc2 Rfe8 31.c4 f6 32.b5 Rd3 33.c5 Rb3 34.a4 Rb4 35.c6 Ra4 36.c7 Rc8 0–1. Ewin,Hans Peter (1895) – Lehnert,Michael (2055), Rhein Main op, 2009.

7.e3 Bg4 8.Qc2 a5 9.cd5 Qd5 10.Nc3 Qe5 11.Na4 (11.h3!? Bc8 12.ba5 Ra5 13.Nb3+/–) 11...ab4= 12.Nb6 Ra3 13.Ba3 ba3 14.Nc4 Qd5 15.Na3 Bc5 16.Nb3 Be7 (16...Bb4 17.Nb1=) 17.Nb1+= Be6 18.Nd4 0–0 19.Nc3 Qe5 20.Ne6 Qe6 21.g3 (21.Be2 b5+=) 21...Nbd7= 22.Bg2 Nc5 (23.0–0 Rd8+=). Muri,Heinrich – Tuor,Peter, corr SUI–ch, 1988.

7.e3 Bg4 8.Qc2 a6 9.Nc3 Nbd7 10.b5 (10.f3 ef3 11.gf3 Be6 12.cd5 Nd5 13.Nd5 Qd5+=) 10...Ne5 (10...ab5 11.f3 c5 12.Ndb5+– (12.fg4?! cd4 13.Nb5 Qc6 14.Nd4 Qc5+/–)) 11.ba6 ba6 12.cd5 cd5 13.Ncb5! ab5 14.Nb5 Qc5 15.Nc7 Kd7 16.Qc5 Bc5 17.Be5 (17.Na8!? Ra8 18.Be5 Ra3 19.Ra3 Ba3 20.h3+–) 17...Ra3= 18.Bb5 Ke7 19.Ra3 Ba3 20.Bf6 (20.d4 Bb4 21.Kf1 Rd8+=) 20...Kf6 21.Nd5 Ke5 22.Nc3 Rd8 (22...Rc8 23.h3 Bh5 24.Be2=) 23.h3 (23.Bc6 f5=) 23...Be6 (23...Bh5 24.f4 ef3 25.g4+=) 24.Ke2 f5 25.f4 Kf6 26.g4 g6 27.Ra1 Bc5 28.Ra6 Rd6 29.Ra8 Rb6 30.Ra7 h6 31.h4 g5 32.gf5 Kf5 33.Bd7 gf4 (33...Bb4 34.fg5 Bc3 35.Be6 Re6 36.dc3 hg5 37.Ra5 Kg4 38.hg5+–) 34.Be6 Ke6 35.ef4 (35.Ne4 Be7 36.ef4 Bh4 37.Ra5+/–) 35...Bd6+– 36.Ra4 Kf5 37.Re4 Rb2 38.Ke3 Kg4 39.Nd5 h5 (39...Rb5 40.Kd4+/–) 40.Re6+– Bb4 41.Rg6 Kh4 42.Nb4 Rb4 43.Rg5 (43...Rb2 44.d4+–; 43.d4 Rb5+–) 1–0. Labahn,Wolfgang – Rohde Jensen,Kristian, corr, 1991.

7.e3 Bg4 8.Qc2 Nbd7 9.cd5 Qd5 10.Bc4 Qh5 11.Nc3 Be7 (11...Qg6!? 12.h3 Ne5 13.hg4 Nc4 14.Ne4 Qe4 (14...Ne4?! 15.Qc4 Qg4 16.g3=) 15.Qc4 Qg2+=) 12.Ne4+/– Ne5 13.Ng3 Qg6 14.Qg6 hg6 15.Be2 a5 16.f3 Bd7 17.ba5 Ra5? (better is 17...Bd6 18.f4 Neg4+/–) 18.Nb3+– Rd5 19.d4 Be6 (19...Nf3 20.gf3 Be6+–) 20.de5 Nh5 21.Nh5 Rh5 22.e4 Rd8 23.Nd4 Bc8 24.f4 Rh6 25.0–0–0 Bc5 26.h4 Ke7 27.g3 Rhh8 28.g4 Ba7 29.f5 Bb8 30.f6! Kf8 (30...gf6 31.ef6 Combination) 31.fg7 (better is 31.Ne6! fe6 32.Rd8 Kf7 33.Rh8 gf6 34.Rf1+–) 31...Kg7 32.e6 f6 33.g5 Bf4 34.Kc2 Be5 35.gf6 Bf6 36.Nf5! gf5 37.Rdg1 (37.Rdg1 Kh6 38.Bf6 Be6 39.h5+–) 1–0. Basman,M (2340) – Duggan,C (2035), Daventry ENG, 4NCL Indiv Rapid Ch rapid, 2013.

7.e3 Bg4 8.f3 ef3 9.gf3 Bd7 10.Nc3=.

7.e3 dc4

8.Qc2 b5 9.a4 Qb4 10.Nc3 Bd7=+.

8.Nc3 Be6 9.Qc2 Bd5 10.b5 Nbd7=+.

8.Bc4 Bg4 9.Qc2 +=.

8.Bc4 Bg4 9.f3 ef3 10.gf3 +=.

8.Be2 b5 9.Qc2 a5 10.a4 ab4=+.

8.f3 ef3 9.gf3 b5 10.d3=+.

8.f3 ef3 9.gf3 Be6 10.Qc2 b5=+.

8.f3 ef3 9.gf3 Be6 10.Ne6–/+.

8.Bc4 Nbd7

9.Nc3 Ne5 10.Be2 a5 =.

9.Nf5 Qc7 10.Qb3 Nb6 11.Ng3 Nc4 12.Qc4 Be6 13.Qc2 Be7 (13...Qe7 14.Nc3+=) 14.Nc3+= Can e4 get defended? 14...0–0 (14...a5 15.Nce4 ab4 16.Nf6 Bf6 17.Bf6 gf6 18.Qb2+=) 15.Nce4 Ne4 16.Qe4 (16.Ne4 f5 17.Nc5 Bd5+=) 16...Qd7 (16...Rfe8 17.Nh5 Bf8 18.Qf4 Qf4 19.Nf4+=) 17.Qd4 Qd4 18.Bd4 (worse is 18.ed4 a5 19.ba5 Ra5–/+) 18...f6 (18...Rfe8 19.Rb1+/–) 19.Rb1 Rf7 20.f3 a5 21.ba5 Ba3 22.Bb6 Rd7 23.d4 Re7 (23...Kf7 24.e4+/–) 24.Kf2 f5 (24...Rd7 25.e4+/–) 25.e4+– fe4 26.fe4 c5 (26...Bd6 27.e5 Bc7 28.Ra1+–) 27.d5 (27.Rhd1+–) 27...Rf7 (better is 27...Rf8!? 28.Kg1 Bd7+–) 28.Ke3 Bg4 29.Rhf1 Re7 30.e5! Rae8 (30...Re5 31.Kf4 Double attack (31.Kf4 Decoy)) 31.e6 Rd7 32.Rf4 (32.Kf4 Rd5 33.Kg4 Re6+–) 32...h5 33.h3 Be6 34.de6 Re6 35.Kf2 (35.Re4 Re4 36.Ne4 c4+–) 35...Rd5 (35...Rd2 36.Kg1+–) 36.Re4 Rf6 (36...Kf7 37.Rb5 Rf6 38.Ke2+–) 37.Ke3 Rg6 (37...Bb4 38.Re7+–) 38.Ne2 Rd7 (38...Bb4 39.Re7+–) 39.Nf4 Rg5 40.h4 Rg4 (40...Rg3 41.Kf2 Rg4 42.Rb5+–) 41.Re8 Kf7 42.Rd8 (42.Rc8 Bb4 43.Kf3 Bd2+–) 42...Rd8 43.Bd8 Bb4 44.Kf3 g6 45.Bg5 1–0. Birzer,Lothar – Jordan,Ian, IECG, 1999.

9.Nf5 Qc7 10.Qb3 Nb6 11.Ng3 Qe7 12.Be2 (12.Bf6 Qf6 13.Nc3 Qg6=) 12...a5 13.b5 Nbd5 14.0–0 (14.Qa4 Bd7+=) 14...Bd7 (14...a4 15.Qc2+=) 15.Nc3+= Nc3 16.Bc3 Nd5 17.bc6 Bc6 18.Bb5 Nc3 (18...Qe6 19.Qa4+/–) 19.Bc6 bc6 20.Qc3 Qe6 21.Qc2 Be7 (21...Rb8 22.Ne4 Be7 23.Rfc1+/–) 22.Ne4 0–0 23.Nc5 (23.Rfc1 Rfb8+/–) 23...Qd5 24.d4 Rfd8 (24...Bc5 25.dc5 Rfd8 26.Rfd1+/–) 25.Rfc1 Rab8 26.h3 (26.Qc3 Rb5+/–) 26...h6 (26...Rb5 27.Ne4 Rb6 28.Nc3+/–) 27.Rab1 Bf8 (27...Rb5 28.a4 Rb4 29.Nd3 Rb1 30.Qb1+–) 28.a4 (28.Qd3 Be7+/–) 28...Bc5 29.Rb8 Rb8 30.Qc5 (< 30.dc5 Rb4+=) 30...Rb4 31.Qc6 Qc6 32.Rc6 Ra4 33.Rc8 (33.Kh2 Ra3+/–) 33...Kh7 34.Ra8 (34.Kh2 Kg6+/–) 34...Kg6 (34...Ra2 35.e4+/–) 35.Ra6 f6 36.g3 Ra1 (36...Ra2 37.Kg2+/–) 37.Kg2 a4 38.Kf3 (38.e4 Kf7+/–) 38...a3 (38...Ra3 39.Ke4+/–) 39.Ra7 (39.e4 Kf7+/–) 39...a2 (39...Ra2 40.e4+/–) 40.Ke4+– h5 41.h4 Kh6 42.Kf5 Kh7 (42...Rc1 43.Ra2 Rc6 44.d5 g6 45.Kf4+–) 43.Ke6 (43...Kh6 44.d5+–) 1–0. Sakai,Kiyotaka – Pech,Jaroslav, corr or01–011 E–mail, 2001.

9.Nf5 Qc7 10.d3 Ne5 =+.

7.e3 Be7

8.Qc2 0–0 9.Nc3 a5 10.c5 (10.ba5 Qd8=) 10...Qc7 11.Na4 (11.d3 ab4 12.ab4 Na6=) 11...ab4 12.ab4 (12.Nb6 Ra7 13.ab4 Ra1 14.Ba1 Nbd7 15.Nc8 Rc8=) 12...Bg4 (12...Bd7 13.Be2=) 13.h3 Bh5 14.Nf5 Bg6 (14...Bd8 15.b5=) 15.Nh4 (15.Ne7 Qe7 16.b5 Nbd7=) 15...Nh5 (15...Na6 16.Ng6 fg6 17.Ba6 Ra6 18.0–0=) 16.Ng6= fg6 (< 16...hg6 17.d3 Bf6 18.Nc3 Ra1 19.Ba1+=) 17.Be2 Ng3 (better is 17...Bh4 18.0–0 Qf7=) 18.Rg1 (18.fg3 Qg3 19.Kd1 Qg2 20.Re1=+) 18...Ne2 19.Ke2 Qh2 (19...Bh4 20.Raf1–/+) 20.Raf1 Nd7 21.Nc3 (21.Ke1 Rf7–/+) 21...Rf5 (21...b6 22.Ne4 de4 23.Qe4–/+) 22.d3 ed3 23.Qd3 Ne5 24.Qc2 Nc4 25.e4 Rf7 26.Bc1 (26.Ba1 Bf6–/+) 26...b6 (26...Bf6 27.Re1–/+) 27.Qd3 (27.ed5 Qe5 28.Be3 Ra3–+) 27…bc5–+ (28.ed5 cb4 29.Qc4 Qe5 30.Be3 Qc3 31.Qc3 bc3 32.dc6 Rf6–/+) 0–1. Mehlhorn,U – Schoesser,M, H–2076–D, 2000.

8.Qc2 0–0 9.cd5 a5 (9...cd5 10.d3=) 10.dc6+= Nc6 11.b5 Nd4 12.Bd4 (worse is 12.ed4 Bf5+=) 12...Bg4 13.Nc3 Rac8 14.h3 Bf5 15.Be2 Rfd8 16.Qb2 (16.g4 Bg6+=) 16...Nd7= 17.Na4 (17.0–0 Bf6 18.Bf6 Nf6=) 17...Qg6 18.g4 Be6 19.Rc1 h5 (19...Bf6!?=) 20.Rc3 Bf6 21.Qc2 Rc3 22.Bc3 Rc8 23.Qb1 Bc3 24.Nc3 (worse is 24.dc3 hg4 25.hg4 Bg4+=) 24...Nc5 25.f3 (25.Rf1 hg4 26.hg4 Qh7=) 25...Qf6 26.0–0 (26.fe4 Qh4 27.Kd1 hg4=) 26...ef3 (26...hg4 27.hg4 ef3 28.Bf3=) 27.Bf3+= Qh4 28.Qe1 Qh3 29.gh5 Bc4 30.Be2 (30.Bg2!? Qh5 31.Rf3=) 30...Nd3+= 31.Bd3 Qg4 32.Kh2 (32.Kf2 Bd3 33.Rh1 Qf5 34.Kg1 Qg5 35.Kf2 Qf6 36.Kg1 Rc5–/+) 32...Qh5–/+ (32...Bd3?! 33.Rf4 Qh5 34.Qh4=) 33.Kg2 Bd3 34.Rf4 Rc5 35.Qh4 Qh4 (35...Bb5?? 36.Qd8 Be8 37.Qe8 Kh7 38.Qf7+– (worse is 38.Rf7 Rg5 39.Kf2 Rf5 40.Rf5 Qe8+=)) 36.Rh4 g5 (36...Bb5 37.Nb5 Rb5 38.Kf3–/+) 37.Rg4 Bb5 38.Nb5 (38.Rg3 Bd7+=) 38...Rb5–/+ 39.Kf3 f6 40.Rc4 Kf7 41.a4 (41.Kg4 Ke6–/+) 41...Rb1 (41...Rb4 42.Rc7 Ke6 43.e4–+) 42.Rc7 Ke6 43.d4 b6 (43...Rb4!?–+) 44.e4–/+ b5 (44...Rb4 45.d5 Ke5 46.Re7 Kd4 47.d6+=) 45.d5 Kd6 (45...Ke5!? 46.Re7 Kd6 47.Re6 Kc5 48.ab5 Kb5–/+) 46.Rc6= Ke7 47.ab5 Rb5 48.Rc7 Kd8 (48...Kd6 49.Rc6 Ke5 50.Re6 Kd4 51.d6 Rb3 52.Kg4=) 49.Ra7 Kc8 50.Kg4 ½–½. Whiteside,T Martyn – Fennelly,Donal A, corr ENG–ch op, 1989.

8.Qc2 0–0=+ 9.cd5 cd5 10.Nb5 Qc6 11.N1c3 a6 (11...a5 12.Nd4 Qc7 13.b5=+) 12.Nd4= Qd6 13.Rc1 (13.d3 Qc7=) 13...Be6 (13...Nc6 14.Nc6 Qc6 15.d3=) 14.Be2 Nbd7 15.Na4 (15.Ne6 Qe6 16.d3 Rfc8=) 15...Rac8 (15...Bg4!?=) 16.Qc8+= Rc8 17.Rc8 Bf8 (17...Nf8 18.Ne6 Qe6 19.Rc7+=) 18.Ne6+= Qe6 19.Rc2 (19.d3 Ne5 20.Rc3 Nd3 21.Bd3 ed3 22.Rd3 Qe4=+) 19...b5 20.Nc5 Bc5 21.bc5 Ne5 (21...Qc6!? 22.Bf6 gf6+=) 22.Be5+/– Qe5 23.0–0 (23.d4 ed3 24.Rc1 Qb2–+) 23...Ne8 (23...d4 24.ed4 Qd4 25.c6+/–) 24.Rb1 (24.d4 Qc7+/–) 24...Nc7 25.a4 (25.d4 Qf6+/–) 25...g6 (better is 25...ba4!? 26.d4 ed3 27.Bd3 f5+=) 26.ab5+– ab5 27.g3 (27.c6 b4+–) 27...d4 (27...Qe8 28.d4 ed3 29.Bd3+/–) 28.ed4 Qd4 29.Bb5 Nb5 30.Rb5 Qa1 (30...Qd3 31.Rb8 Kg7 32.Rcb2+/–) 31.Kg2+– Qd1 32.Rc3 (32.Rb8 Kg7 33.Rc4 Qf3 34.Kg1 Qd1 35.Kg2 e3=) 32...Qd2+/– 33.Rbb3 Qd5 34.Rb2 (better is 34.Rb8!? Kg7 35.c6+/–) 34...e3+= 35.f3 Qe5 36.Rcc2 e2 37.Re2 Qc5 38.g4 h5 39.gh5 Qh5 40.Rb7 Qg5 41.Kf2 Qh4 42.Kg2 (42.Kg1 Qd4 43.Kg2 Kg7+=) 42...Qg5 43.Kf2 (43.Kh3 Qf5 44.Kg3 Qg5 45.Kf2 Qh4 46.Kg1 Qf4+=) 43...Qh4+/– 44.Ke3 Qg5 45.Kf2 (45.Ke4 Qf5 46.Kd4 Qf6 47.Re5 Qd6 48.Rd5 Qf4 49.Kc5 Qh2=) ½–½. Sundin,Thommy (2015) – Bergkvist,Gunnar (1965), Sweden, 1989.

8.Qc2 0–0 9.cd5 cd5 10.d3 Bg4=.

8.Qc2 Na6 9.cd5+= cd5 10.Bb5 (10.d3 Bg4+=) 10...Kf8 11.Nc3 Ng4 (11...Nc7 12.Be2+=) 12.Ba6 (12.d3 ed3 13.Bd3 Ne5+/–) 12...ba6 13.f4 (13.d3 ed3 14.Qd3 a5+=) 13...ef3 (13...Bh4!? 14.g3 Bf6+=) 14.Nf3+/– Bb7 15.Ne2 (15.Rc1 Rc8+/–) 15...Rc8 16.Qf5 (16.Qd3 a5+/–) 16...Bf6 (16...Nh6 17.Qd3+=) 17.Bd4+/– Bd4 (17...Qe6 18.Qf4+/–) 18.Ned4 (< 18.ed4 Nh6 19.Qe5 Qe7+=) 18...Nh6 19.Qh5 (19.Qd3 a5+/–) 19...Qg6 20.Qh3 (20.Qh4 Qe4+/–) 20...Qg4 21.Qh4 (21.Qg4 Ng4 22.Ke2 Nh6+/–) 21...Qh4 22.Nh4 g6 (22...a5 23.b5+/–) 23.0–0 Ke7 24.Nb3 (24.Nhf3 f6+/–) 24...Rc7 (24...Bc6 25.Nf3+=) 25.h3 (25.Rac1 Bc6+/–) 25...f5 (25...Rhc8 26.Rac1+=) 26.Nf3 Kd6 (26...Rhc8 27.Nfd4+=) 27.Nfd4 (27...Bc6 28.Nc5+/–) 1–0. Diener,Rudolf – Eriksson,Roland, corr ICCF EU M–971, 1993.

8.Qc2 dc4 9.Bc4 0–0 10.Nc3+=.

8.c5 Qc7 9.Be2 0–0 10.0–0 Nbd7 (10...b6 11.cb6 ab6 12.Nc3+=) 11.Nf5 Ne5 12.Ne7 Qe7 13.d4 Ng6 (13...ed3 14.Bd3 Nd3 15.Qd3=) 14.Nc3+= h6 15.a4 White plans b5 15...Nh7 16.b5 f5 (16...Qg5 17.f4 ef3 18.Rf3+=) 17.Bh5 (17.a5 f4 18.bc6 bc6=) 17...Qg5 18.Bg6 Qg6 19.Ne2 (19.f3 Nf6=) 19...Qf7 (19...f4 20.Nf4 Rf4 21.ef4+=) 20.Nf4 (20.Rb1 Ng5+=) 20...g5= 21.Qh5?? (better is 21.Ne2=) 21...gf4–/+ 22.Qh6 f3 (22...fe3 23.fe3 Qf6 24.Qf4–+) 23.gf3 Qg7 24.Qg7 Kg7 25.fe4 (25.Kh1 Ng5 26.Rg1 Kf6–+) 25...fe4 26.Kh1 (26.bc6 bc6 27.h4 Rf3–+) 26...Be6 (26...Kh6!? 27.Rg1–+) 27.Rg1 Kh6 28.Rg3 (28.Rg2–+) 28...Rf2 29.Bc3 Raf8 (29...Ng5 30.Be1 Rb2 31.Rg2–+) 30.Rg2 (30.Rag1 Bf7 31.R1g2–+) 30...Ng5 31.Rag1 (31.h4 Rg2 32.Kg2 Bh3 33.Kg1 Nf3 34.Kf2 Nd4 35.Kg3 Rf3 36.Kh2 Nc2–+) 31...Rg2 32.Kg2 Nf3 33.Rb1 Rg8 34.Kf2 Bh3 (34...Nh2?! 35.Rh1=) 35.Ke2 Rg2 36.Kd1 Rg1 (36...Nh2 37.bc6 bc6 38.Rb7–+) 37.Kc2 Rb1 38.Kb1 Bf1 39.bc6 bc6 40.a5 (40.Ba5 Bd3 41.Kc1 Nh2–+) 40...Nh2 41.Kc1 Kh5 42.Kd1 Kg4 43.Ke1 Kf3 44.Bd2 Bd3 0–1. hal1958 – gpi, playchess.de, 2003.

8.cd5 cd5 9.Bb5 Nc6 10.d3=.

8.cd5 cd5 9.Qc2 0–0 10.Nb5 Qc6 11.N1c3 Bg4 (11...a6 12.Nd4 Qd6 13.b5=) 12.Rc1 (12.f3 A) 12...Bh5 13.Nd4 (13.fe4 de4 14.Nd4 Qc8 15.Bb5 a6 16.Qa4 Bg4 17.0–0 Nbd7) 13...Qc7 14.fe4 de4 15.Rc1 Rc8 16.Qb1 Qe5 17.Ncb5 Rc1; B) 12...Be6 13.Nd4 (13.fe4 de4 14.Nd4 Qc8 15.Bb5 a5 16.0–0 ab4 17.ab4 Ra1) 13...Qd7 (13...Qc8 14.fe4 de4 15.Bb5 a5 16.0–0 ab4 17.ab4 Ra1) 14.fe4 Nc6 15.Ne6 fe6 16.ed5 Nd5 17.Bd3 Nf6; 12.h3 Be6 A) 13.Be2 Rc8 (13...Qd7 14.Nd4 Nc6 15.Ne6 fe6 16.Qb3 Rac8 17.0–0 d4) 14.Nd4 Qd7 15.Ne6 fe6 16.Qb3 Nc6 17.Na4 Bd6; B) 13.d3 Nbd7 (13...Rc8 14.de4 de4 15.Be2 Nbd7 16.0–0 a5 17.Qb1 ab4) 14.de4 de4 15.Nd4 Qb6 16.Be2 Rfc8 17.0–0 a5; C) 13.Nd4 Qd7 (13...Qc8 14.Ne6 Qe6 15.d4 Nc6 16.Be2 Rfc8 17.0–0 Bd6) 14.Bb5 Qd6 15.0–0 a6 16.Be2 Nbd7 17.d3 ed3) 12...Rc8 (12...Qd7 13.h3 (13.Na4 Na6 14.h3 Rfc8 15.Bc3 Bh5 16.Nd4 Nc7 17.Nc5 Bc5; 13.d3 a6 14.h3 Bh5 15.Nd4 Rc8 16.de4 de4 17.Be2 Be2) 13...Be6 (13...Bf5 14.Na4 Na6 15.Qd1 Rfc8 16.Rc8 Qc8 17.Be2 Nb8; 13...Bh5 14.g4 Bg6 15.g5 Nh5 16.Qb3 Nc6 17.Nd5 Bg5) 14.Na4 Na6 15.Qd1 Ne8 16.Nd4 Rc8 17.Ba6 Rc1) 13.h3 (13.f3 Bd7 (13...Bh5 14.fe4 de4 15.Nd4 Qe8 16.Bb5 Nbd7 17.Qa4 Bg6; 13...Be6 14.Be2 ef3 15.Bf3 Qd7 16.Nd4 Nc6 17.Ne6 Qe6) 14.Be2 ef3 15.Bf3 Qa6 16.Be2 Qe6 17.Nd4 Qe5; 13.Nd4 Qd6 14.h3 Bd7 15.b5 a6 16.Qa4 Be6 17.Be2 Nbd7) 13...Be6 (13...Bd7 14.Qd1 Qe6 15.Nd4 Qd6 16.Ncb5 Qb6 17.Rc8 Bc8) 14.d3 (14.Nd4 Qb6 15.Be2 Nbd7 16.0–0 a5 17.b5 Ne5) 14...Nbd7 15.Qd2 (15.de4 de4 16.Nd4 Qb6 17.Be2 Ne5) 15...Qb6 16.de4 de4 17.Na4 (17.Nd4 a5) 17...Rc1 18.Qc1 Qd8 19.Nd4 Rc8 20.Qb1 (20.Qd1 Nb6 21.Be2 Nc4 22.Ne6 Qd1 23.Kd1 Nb2 24.Nb2 fe6=) 20...Bc4 (20...Bd5!?–/+) 21.Bc4= Rc4 22.Nf5 (22.0–0 a5=) 22...Bf8 23.0–0 a5 24.Bf6 Nf6 25.Rd1 Qc7 26.Nb2 Rc3 27.Qa1 ab4–/+ 28.ab4 Qc8 29.Qa4?? (29.Qa5 Rc1 30.Qe5 Bb4–/+) 29...Rc1 (29...Qf5 30.b5–+) 30.Kh2?? (better is 30.Nd4–/+) 30...Rd1–+ 31.Nd1 b6 (better is 31...Qf5 32.Kg1 b5–+) 32.Qb5 (32.Nd4 Qc4+=) 32...Qb7 (better is 32...Qc2!? 33.Qf1 Bb4–+) 33.Qe5 (33.g4 g6 34.Ng3 Bd6+=) 33...Qd7 (33...Qd5!? 34.Qd5 Nd5+=) 34.Nc3= g6 (worse is 34...Bb4 35.Nd5 Bf8 36.Nh6 Kh8 37.Nf6 gf6 38.Qf6 Bg7 39.Nf7 Kg8 40.Nh6 Bh6 41.Qh6 Qc7 42.g3+/–) 35.Qf6 Qf5 36.Qb6?? (better is 36.Qf5 gf5 37.b5=) 36...Qe5–+ 37.g3 Qc3 38.b5 Qb4 (38...Kg7 39.Kg2–+) 39.Qb8 (39.Qc6 Qc5 40.Qa6 Qf5–+) 39...Qd6 (39...Qb2 40.Kg1 Kg7 41.b6–+) 40.Qa8 (40.Qb7 Qe6–+) 40...Qc5 (better is 40...Qb6!? 41.Qa6 Bc5 42.Kg2–+) 41.Qb8 Kg7 42.b6 Bd6 43.Qa7 (43.Qd8 Qe5 44.Kg2 Qf6–+) 43...h5 44.Qa1? (better is 44.Kg2–+) 44...Qe5 45.Qe5 (45.Qa4–+) 45...Be5 46.Kg2 Kf8 47.f3 ef3 48.Kf3 Ke7 49.g4 hg4 50.hg4 (50.Kg4 Kd7 51.b7–+) 50...Kd6 51.Ke4 Bf6 (51...Bh2!? 52.b7 Kc6 53.Kd4–+) 52.Kf4 Kc6 53.Ke4 (53.e4 Bd8–+) 53...Kb6 54.Kd5 Kc7 55.Ke4 (55.e4 Kd7–+) 55...Kd7 (55...Kd6!? 56.g5 Bg5 57.Kd4–+) 56.Kd3 (56.Kd5 Bb2–+) 56...Ke6 (better is 56...Kd6 57.Kc4–+) 57.e4 (57.Kc4 Kd6–+) 57...Ke5 58.Ke3 Bg5 (58...g5!? 59.Kf3–+) 59.Kf3 Bc1 0–1. De Visser,Arno – Schaper, 1988.

8.cd5 cd5 9.d3 Nc6=.

8.Be2 0–0 9.0–0 dc4 10.Bc4 Ng4 (better is 10...b5 11.Ba2 Ng4=) 11.g3? (better is 11.f4=) 11...Qh6–+ 12.h4 Bh4! 13.gh4?? (better is 13.Qe2 Bf6 14.f4–+) 13…Qh4 (14.Qg4 Qg4 15.Kh2 Qh4 16.Kg2 Bh3 17.Kh2 Bg4 18.Kg2 Qh3 19.Kg1 Bf3 20.Nf3 ef3 21.Bf7 Rf7 22.Bg7 Rg7) 0–1. Flazinski,Pawel – Walkusz,Miroslaw (2085), Kartuzy, 2002.

8.Nc3 0–0

9.Qb3 dc4!? 10.Bc4 a5 11.ba5 Ra5 =.

9.Qb3 Be6 10.cd5= cd5 11.Ncb5 (11.d3 Bg4+=) 11...Qd7= 12.Rc1 Rc8 (12...Nc6 13.Nc6 bc6 14.Nd4=) 13.Rc8 Qc8 14.Qc3 (14.d3 a5 15.ba5 Ra5=) 14...Nc6 15.Nc6 Qc6 (15...bc6 16.Nd4 c5 17.bc5 Qc5 18.Qc5 Bc5 19.Ne6 fe6 20.a4+=) 16.Qc6+= bc6 17.Nd4 (17.Nc7 Rb8=) 17...Bd7 18.Nb3 Ne8 (18...a5 19.Na5 c5 20.Bc3+=) 19.Be5 (19.d3 ed3 20.Bd3 a5 21.Na5 c5+=) 19...Bd6 (19...a5!? 20.Nc5 Bf5+=) 20.Bd6+= Nd6 21.Nc5 (21.d4 Nb5 22.Nc5 Bc8 23.Bb5 cb5+=) 21...Bc8= 22.Ba6 (22.Nb3 Bf5=) 22...Ba6+= 23.Na6 Nc4 24.a4 Kf8 (24...d4 25.a5+=) 25.Ke2= Ke7 (25...Ne5 26.Rc1=) 26.Rc1 Kd6 27.Rc2 Re8 (27...Ne5 28.b5=) 28.d3= ed3 29.Kd3 f5 30.Re2 g5 31.h3 h5 32.f3 g4 33.hg4 hg4 34.f4 (34.Kd4 Ne5 35.Rf2 gf3 36.gf3 Nc4=) 34...Rh8 35.Nc5? (35.Kd4 g3+=) 35...a5 (better is 35...Rb8!? 36.Kc3 a5–+) 36.Nb7+= Kc7 37.Na5 Na5 38.ba5 Ra8 39.Kd4 Kd6 (39...Ra5?! 40.Ke5 d4 41.Kd4 Ra4 42.Ke5 Ra5 43.Ke6=) 40.Rb2 Ra5 41.Ra2 Ra7 42.Kd3 Rb7 43.Kc3 Kc5 (43...g3 44.Kd3+=) 44.Ra1 (44.a5 Re7 45.Kd3 Ra7+=) 44...Re7 45.Kd3 Kb6 (45...Kb4 46.a5 c5 47.a6–/+) 46.a5 Ka6 47.Rc1 (47.Kd4!?=) 47...Kb5–/+ (47...Ka5 48.Rc6 Kb5 49.Rf6+/–) 48.a6 c5 (worse is 48...Ka6 49.Rc6 Kb5 50.Rf6+/–) 49.Ra1 Ra7 50.Rb1 Ka6 51.Rb8 Rb7 52.Rf8 (52.Rd8 Rb3 53.Kd2 Kb5 54.Rd5 Rb2 55.Kc3 Rg2 56.Rf5 g3+=) 52...Rb3 53.Ke2 Rb2 54.Kf1 (better is 54.Kd3 c4 55.Kd4 Rd2 56.Ke5–+) 54...c4–+ 55.Rf5 c3 56.Rf6? (56.Rd5 c2 57.Rc5–+) 56...Kb5 57.Rf8 c2 (57...Kc4 58.Rc8 Kd3 59.g3–+) 58.Rc8 Rb1 59.Kf2 c1Q 60.Rc1 Rc1 0–1. Poschmann,Hans – Huguet,Bernard (2185), Wch Seniors, 1998.

9.cd5 cd5 10.Rc1 a6 11.Na4 (11.d3 Nbd7=) 11...Bg4 12.Be2 Be2 13.Qe2 g6 (13...a5 14.Nc5 Qb6 15.Qb5 Qb5 16.Nb5 ab4 17.Nc7 Ra3 18.Ba3 ba3 19.Ke2–/+) 14.0–0 Nbd7 15.Nc5 Rab8 (15...Nc5 16.bc5 Qc7 17.c6=) 16.d3 ed3 (16...Nc5 17.bc5 Qc7 18.de4 Ne4 19.Nb3+=) 17.Nd3 (17.Qd3 Ng4 18.Nf3 Nc5 19.Rc5 Rfd8+/–) 17...Nb6 18.Nf3 (18.Qf3 Nc4 19.Rfd1 Rfc8+/–) 18...Nc4 19.Bd4 (19.Be5 Ne5 20.Nfe5 Rfc8+=) 19...Ne4 (< 19...Na3 20.Be5 Qe6 21.Nd4+–) 20.Rfd1 (20.Be5 Ne5 21.Nfe5 Bf6=) 20...Rbc8 (20...Na3 21.Be5 Qe6 22.Nd4+–) 21.Qa2 (21.Nc5 Na3 22.Nb7 Qb4 23.Qa6 Nc4=) 21...Rfd8 22.Nc5 Nc5 23.Bc5 Qf6 24.Bd4 Qe6 25.h3 h5 (25...Bf6 26.Bf6 Qf6 27.Nd4=) 26.h4 (26.Qa1!?+=) 26...Qg4= 27.Qa1 Rc6 (27...Bh4 28.Ne5 Qe2 29.g3 Ne5 30.Be5 Rc1 31.Rc1=) 28.Bc3 (28.Bh8 f6 29.Rd4 Qe6=) 28...Re6 (28...Bh4 29.Rd4 Bf2 30.Kf2 Qc8+–) 29.Rd4 (29.Nd4 Re5=) 29...Re4= 30.Rcd1 Nb6 (30...b5 31.a4=) 31.Nd2 Rd4 32.Bd4 Nc4 33.g3 Bh4 34.Nc4 dc4–/+ 35.Rc1 b5 36.Bh8 f6 37.Bf6 Bf6 38.Qf6 Rd1 39.Rd1 Qd1 40.Kg2 Qd5 41.Kg1 Qd1 42.Kg2 Qd5 43.Kg1 Qf5 44.Qa6 Kg7 45.Qc6 Kh6 46.Kg2 Qe5 ½–½. Melich,Jindrich – Bretsnajdr,Vladimir (2310), Praha Mladi, 1989.

9.cd5 cd5 10.d3 a5 =.

9.cd5 cd5 10.d3 Nc6 11.Nc6 Qc6 12.de4 de4 13.Rc1 Bg4 14.Qb3 Rac8 15.Bb5 Qb6 16.Bc4 a5 17.b5 Qd6 18.0–0 Rc5 19.a4 Bf3?? (better is 19...Rg5 20.Ne2 Be2 21.Be2 Ng4+=) 20.gf3+/– ef3 21.Rcd1 Qe5 22.Ne2 Qg5 23.Ng3 Qg4 24.Bd5 Nd5 25.Kh1 (25.Rd5?? Qh3 26.Rc5 Qg2) 25...Nc3! 26.Rd2 (26.Qc3 Rc3) 26...Rh5! (26...Qa4 27.Qa4 Na4 28.Ba3–+) 27.Qc3 (27.Nh5 Qg2) 27...Bf6 (28.Qf6 gf6–+) 0–1. Kern – Blankenberg, corr, 1999.

9.d3 ed3

10.Bd3 dc4 11.Bc4 c5 12.bc5 Qc5 13.Be2 (13.Qb3 Nc6 14.Nc6 bc6=) 13...Nc6= 14.Nc6 bc6 15.0–0 Rd8 16.Qc1 Be6 17.Bf3 Rab8 18.Rd1 Rd1 19.Nd1 Qc1 (19...Qa5 20.Nc3=) 20.Rc1 c5 21.Kf1 (21.Bf6 gf6 22.Nc3 c4=) 21...Nd5 22.Be5 Rb3 23.e4 (23.Bb2 Nb6 24.Rc3 Na4 25.Rb3 Bb3–/+) 23...Nb6–/+ Black prepares c4 24.Rc3 (24.Ne3 Ra3 25.Bc7 Kf8–/+) 24...c4 25.Bd4 Ba3 26.Bb6 (26.Ke2 Na4 27.Rc2 a5–+) 26...ab6 27.Be2 Rc3 28.Nc3 Bb2 29.Nd5 b5 30.Ke1 Kf8 31.Kd2 Bd4 32.f3 (32.Nc7 Bd7–+ (32...Bf2?! 33.Nb5 Ke7 34.Na3+=)) 32...Bd5 33.ed5 Ke7 34.f4 Kd6 35.f5 Kd5 36.f6 (36.Bf3 Kc5–+) 36...Bf6 37.Bf3 (37.Bd1 b4–+) 37...Kc5 0–1. Seifert,Henryk (2250) – Szoen,Dariusz (2400), Poland–chT1, 2004.

10.cd5 a5 11.ba5 Ra5 12.Bd3 Nd5 13.0–0 (13.Qc2 g6 14.Nb3 Ra8 15.Be2 Be6) 13...Na6 14.Ne4 (14.Qc2 Nc3 15.Bc3 Rh5) 14...Qc7 15.Qh5 h6.

10.cd5 cd5 11.Bd3 Nc6 (11...a6 12.b5 Be6 13.f4 ab5 14.0–0 Qb6 15.Qf3 Nbd7) 12.Ncb5 Qb8 13.Rc1 (13.0–0 Bd7 14.Qe2 a6 15.Nc6 bc6) 13...Bd7 14.Nf5 Bf5 15.Bf5 g6.

10.cd5 Nd5 11.Bd3 Nc3 (11...a5 12.b5 Nf6 (12...Rd8 13.0–0 Nc3 14.Bc3 cb5 15.Qc2 g6) 13.Qc2 Qc5 (13...Rd8 14.0–0 c5 15.Nf5 Qd3) 14.0–0 (14.a4 cb5 15.ab5 Qc7) 14...cb5 15.Qd2 (15.Ncb5 Qc2) 15...Bd7+= (15...Nc6); 11...Nf6 12.0–0 a5 13.Qe2 Nbd7 14.Nf5 Qe6 15.Ne4 Ne4) 12.Bc3 Qd5 (12...Rd8 13.0–0 Na6 (13...g6 14.Qb3 Nd7 15.Rad1 Nb6) 14.Qc2 Qh6 15.Rfd1 c5; 12...Na6 13.0–0 Rd8 14.Qc2 Qh6 15.Rfd1 c5) 13.0–0 (13.Qc2 g6 (13...Qg2 14.Bh7 Kh8 15.0–0–0 Bf6) 14.0–0 Rd8 (14...Nd7 15.e4 Qh5) 15.e4 Qh5) 13...Bf6 (13...Rd8 14.Qc2 (14.Qe2 Na6 15.e4 Qd6) 14...g6 (14...Qh5 15.Rad1 g6) 15.Rad1 (15.e4 Qh5) 15...Nd7; 13...c5 14.e4 Qd8 15.bc5 Bc5) 14.Qc2 (14.Qe2 Na6 (14...Nd7) 15.Rad1 (15.e4 Qd6) 15...Qd7+– (15...Qe5)) 14...h5 (14...Qh5!?+/– 15.f4 Rd8) 15.Rad1+– Qg5 (15...Bg4+–) 16.Bf5 Bf5 17.Nf5 Bc3 18.f4 Qf6 19.Rd6 1–0. pvanr (2025) – harborcoat (1730), gameknot.com, 2010.

10.cd5 Bd7 11.Bd3 cd5 12.0–0 Nc6 13.Ncb5 Qb8 14.Nf5 Bf5 15.Bf5 g6.

6.c4! Be7

7.Nc3 dc4+= 8.e3 Nc6 (8...a5 9.ba5 Nc6 10.Ncb5+=) 9.Ncb5 (9.Qa4 0–0 10.Nc6 bc6 11.Bc4 c5=) 9...Qd7+= 10.Bc4 (10.Nf5 Nb4 11.Bc4 Nbd5 12.Ng7 Kf8=) 10...a6 11.Nc3 (11.Nc6 A) 11...ab5? 12.Ne5 (12.Ne7?! bc4 13.Nc8 Rc8+=) 12...Qf5 13.Bf7 Kf8 14.f4+–; B) 11...Qc6 12.Qe2 Bg4+= (12...ab5 13.Bb5 Qb5 14.Qb5 c6 15.Qe5+–)) 11...Nd4–/+ 12.ed4 0–0 13.Qc2 a5 (13...Bd6 14.0–0 Qg4 15.Rfe1+=) 14.b5+= Qg4 (worse is 14...Qd4 15.Nd5 Qc5 16.Bf6 gf6 17.Qe4+/–) 15.Nd5 (15.0–0 Rd8+=) 15...Nd5–/+ 16.Bd5 Bf5 (better is 16...Re8–/+) 17.h3?? (17.0–0 c6 18.bc6=) 17...Qg6?? (17...Qg2 18.0–0–0 c6 (18...Qf2 19.Rhf1 Qg3 20.Rf5+/–) 19.bc6 bc6–+) 18.g4+= Qd6 19.Bb7 (worse is 19.Be4 Be4 20.Qe4 Rfe8+=) 19...Rab8 20.Qc6 (20.Bc6!? Bc8 21.Be4+/–) 20...Bd7= 21.Qd6 Bd6 22.Be4 Rfe8 23.f3 f5 24.gf5 Rb5 (worse is 24...Bb5 25.Bc3+/–) 25.Bc3 Bf5 26.d3 Ba3 (26...Be6!?=) 27.Kd2+= Be4 28.de4 Bb4 29.Rhb1 (29.d5 Rf8 30.Rhf1 Bc3 31.Kc3 c6+=) 29...Rf8 (29...Bc3 30.Kc3 Rh5 31.Rh1+=) 30.Bb4+/– ab4 31.Rb3 c5 32.dc5 Rc5 33.Rab1 (33.Rb4 Rh5 34.f4 Rf4 35.Ra8 Rf8+=) 33...Rc3 (33...Rh5 34.Ke2= (worse is 34.Rb4 Rh3 35.Rb8 Rhf3+=)) 34.Rc3+= bc3 35.Ke3 (worse is 35.Kc3 Rf3 36.Kd4 Rh3 37.Rb8 Kf7 38.Rb7 Kf6 39.Rb6 Kg5+=) 35...Rf6 36.Rc1 Rh6 37.Rc3 Rh3 38.Rc7 (38.e5 Kf7+=) 38...h5 (38...g5 39.Kf2+=) 39.e5 g5 40.e6 Kf8 41.Ke4 h4 42.f4 gf4 43.Kf5 Re3 (better is 43...Ra3+/–) 44.Kf6+– Kg8 45.Rg7 Kh8 46.Rg4 h3 (46...Kh7+–) 47.Kf7 Re6 48.Rh4 1–0. Steffens,Olaf (2300) – Fenner,Martin (1985), 22nd Schloss Open, 2016.

7.cd5 Qd5 8.d3 0–0 =.

7.cd5= Qd5 8.e3 0–0 9.Qc2 c6 (9...a5 10.Nc3 Qe5 11.Ncb5+=) 10.Nc3+= Qe5 11.Bc4 (11.Ncb5 cb5 12.Nb5 Qf5=) 11...Nbd7 12.Ba2 (12.0–0 Nb6 13.f4 ef3 14.Nf3 Bf5=) 12...a5 (12...Qg5 13.0–0 c5 14.Nde2 cb4 15.ab4=) 13.ba5 (13.Nde2!?=) 13...Nc5+= 14.0–0 Qh5 15.Nde2 Ra5 16.Ng3 e4 becomes the focus of attention (16.f3 Bd6 17.Nf4 Bf4 18.ef4 ef3 19.Rf3 Bf5–/+) 16...Qh4 17.Bb1 e4 draws heavy fire 17...Bd6 18.Nce2 Nd3 Exerts pressure on the isolated pawn 19.Bf6 gf6 (19...Qf6 20.Nd4 Qh4 21.f4=) 20.f4= ef3 21.Rf3 Be5 22.Nc3 Bg4 23.Rf1 Rd8 (23...Bg3?? 24.hg3 Qh6 25.Qd3+–) 24.Qb3 Nc5 (better is 24...b5!? 25.Bd3 Rd3=) 25.Qb4+= Rd2? (25...Bg3 26.hg3 Qg3+=) 26.Bf5?? (26.Ra2 Ra2 27.Qa5 Bg3 28.Qd8 Kg7 29.hg3=) 26...h5 (better is 26...Bf3 27.Bh7 Kh8 28.Qh4 Rg2 29.Kh1 Rf2 30.Kg1 Rg2 31.Kh1 Rf2 32.Kg1 Rg2=) 27.Bg4?? (better is 27.Nce4 Rg2 28.Kg2=) 27...hg4 (27...Qg4 28.Nb1 (28.Qa5 Bg3 29.hg3 Qg3 30.Qd8 Rd8–+) 28...Qb4 29.ab4 Ra1 30.Nd2 Rf1 31.Ndf1–/+) 28.Rad1 (28.Qa5?? Bg3 29.hg3 Qg3 30.Qd8 Rd8–+) 28...Nd3 (28...Rd1 29.Rd1 Bc7 30.Nf1+=) 29.Qe4 (29.Qa5 Bg3 30.Qd8 Kg7 31.hg3 Rg2 32.Kg2 Qh3 33.Kg1 Qg3 34.Kh1 Qh3 35.Kg1 Qg3 36.Kh1 Qh3 37.Kg1 Qg3=) 29...Nc5 (better is 29...Bc3 30.Rd2 Bd2 31.Qd3 Rd5=) 30.Qc4 (30.Qb4 Rd1 31.Rd1+=) 30...Rd1–/+ (30...Bg3? 31.hg3 Qg3 32.Rd2 Qe3 33.Rff2+–) 31.Rd1? (31.Nd1 Bg3 32.hg3 Qg5–/+) 31...Ne6 (better is 31...Bg3 32.hg3 Qg3–+) 32.Qb4–/+ Rc5 (32...Bg3 33.hg3 Qg5 34.Rd3–/+) 33.Nce4 Rc2 (33...Rd5 34.Rf1 Rd7 35.a4+=) 34.Qe7 Attacks the backward pawn on f6 (34.Qb7!? Qh6 35.Qa7=) 34...Qh6+= 35.Kh1 (35.Rf1 Bg3 36.Nf6 Kg7 37.Ng4 Bh2 38.Nh2 Qe3 39.Kh1 Rf2–+) 35...f5 (35...Qe3?? 36.Qe8 Nf8 37.Nf6 Bf6 38.Qe3+–) 36.Qe8 Kh7 (better is 36...Qf8!? 37.Qf8 Kf8 38.Nf5 b5–/+) 37.Qf7+= Ng7 38.Qe7 Bg3 (38...Qe3?? 39.Ng5 Kg6 40.Ne6+–) 39.Ng3 Qe6 40.Qb7 Qd5 Do you see the mate threat? (40...Qe3?? 41.Qg7!? Kg7 42.Nf5 Kh7 43.Ne3+–) 41.Rg1 (41.Rd5 Theme: Deflection from c1 41...Rc1 The nicest combinations are those leading to mate) 41...Rg2 ½–½. Diener,Rudolf – Dostan,Janos, corr ICCF W–ch M269, 1984.

7.cd5 Nd5 8.Qc2.

7.e3 0–0 8.Nc3 dc4 9.Qc2 a5 10.Bc4 ab4 11.Ncb5 +=.

7.e3 0–0 8.Nc3 c6 9.Qc2 Bg4 (9...a5 10.ba5 Ra5 11.d3=) 10.d3 ed3 11.Bd3 (worse is 11.Qd3 dc4 12.Qc4 b5=) 11...dc4 12.Bc4 a5 13.Ne4 Ne4 (13...Qd7 14.h3 Bh5 15.Bd3+=) 14.Qe4+/– Bd7 15.Rd1 Qf6 (15...ab4? 16.Ne6 Qd1 17.Kd1 fe6 18.Be6 Be6 19.Qe6 Rf7 20.Qc8 Bf8 21.ab4+–) 16.Rd2 Qh4 (16...ab4? 17.Nf3 Bf5 18.Bf6 Be4 19.Be7 Bf3 20.gf3 (20.Bb4?! Bg2 21.Bf8 Kf8+/–; 20.Bf8?! Kf8 21.gf3 ba3+–) 20...ba3 21.Ke2+–) 17.g4 (17.Qh4!? Bh4 18.b5+/–) 17...ab4= (17...Bg4? 18.Rg1 Bf6 19.Rg4 (19.Qg4?! Qg4 20.Rg4 ab4 21.ab4 b5+–) 19...Qh2 20.Nf5 Bb2 21.Bf7 (21.Rb2 Kh8 22.Rg7 Nd7+–) 21...Kh8 22.Rb2+–) 18.Nf3 Qh3 (18...Qg4 19.Rg1 Qg1 20.Ng1 ba3 21.Bg7 (21.Qe7?! ab2 22.Rb2 Ra1 23.Ke2 b5+–) 21...Kg7 22.Qe7+–) 19.Rg1 (19.Bg7 Kg7 20.Bf1–/+) 19...ba3–/+ 20.Bg7 Kg7 21.Rg3 Qh6 22.g5 Threatening mate: Qe5 22...Qg6 23.Qe5? (23.Qe7 Qb1 24.Ke2+–) 23...Kg8–+ 24.Nh4? (24.Qe7 a2! 25.Ba2 Ra2 26.Qf6–+) 24...Qb1 25.Ke2 Threatening mate... how? 25...Be6 (25...Qb4 26.Rd4 Qb2 27.Kf3 Be6–/+) 26.Bd3?? (better is 26.Be6 Qb5 27.Qb5 cb5 28.Bd5+=) 26...a2–+ 27.g6 The mate threat is gxh7 27...Qf1 28.Kf3 (28.Kf1 a1Q 29.Qa1 Ra1 30.Ke2 Bh4 31.gh7 Kh8 32.Rg2–+) 28...fg6 29.Nf5 Threatening mate: Qg7 29...Bf5 (better is 29...Bd5 30.Kg4 h5 31.Kf4 g5 32.Rg5 Bg5 33.Kg5 Qg1 34.Kh6–+) 30.Bf1 a1Q 31.Bc4 (31.Qa1 Ra1 32.Kg2–+) 31...Be6 (31...Be6 32.Kg2 Qe5 33.Be6 Qe6–+) 0–1. Adam,Stefan – Broberg,Horst, corr DDR–ch11, 1982.

7.e3 0–0 8.Nc3 c6 9.cd5 cd5 10.Rc1 a6 11.Na4 Bg4 12.Be2 Be2 13.Qe2 g6 14.0–0 Nbd7 15.Nc5 Nc5 16.Rc5 (16.bc5 Qc7+=) 16...Rac8 (16...Nd7 17.Rc2=+) 17.Rcc1 (17.Rc8 Rc8 18.d3 Bf8=) 17...Nd7 18.d3 Ne5 19.de4 de4 20.Ba1 (20.f3 Rc1 21.Bc1 Qd5=) 20...Bf6 (20...Rc1 21.Rc1 Nd3 22.Rf1=) 21.Rfd1 (21.f3 Rc1 22.Rc1 a5=) 21...Qe7 (21...Rc1 22.Rc1 Nd3 23.Rf1=+) 22.Qd2 (22.Rc8!? Rc8 23.Nb3=) 22...Bg7 23.Rc8 Rc8 24.Rc1 Qd7 (24...Re8 25.Rc2=+) 25.Bb2 (25.Rc8!? Qc8 26.Nb3=) 25...Rc1 26.Bc1 (26.Qc1 h6–/+) 26...Nd3 27.Ne2 (27.Bb2 Qa4 28.h3 Be5–/+) 27...Qc6 28.g3 (better is 28.f3!?–/+) 28...Qc4 29.Kg2 Qb3 (29...b6 30.Qd1–+) 30.h3 Qb1 31.h4 (31.g4 Qa1–+) 31...h5 (32.a4 Qa1–+) 0–1. Steiner,Peter Markus – Feilmayr,Erwin, corr ICCF TT 2/06, 2004.

7.e3 0–0 8.cd5 Qd5 9.Nc3 Qe5 =.

6.e3

6.e3 (--> 4.e3 Nf6 5.Nf3 e4 6.Nd4).

6.e3 a5 7.b5 (--> 5.Nd4 a5 4.b5 Nf6 7.e3).

6.e3 c6 7.c4 (--> 5.Nd4 Nf6 6.c4 c6 7.e3).

5.Nd4 Bg4

6.Nc3 Qe5 7.h3+= Qd4 8.hg4 Qe5 (better is 8...Bd6!?+=) 9.Rh5+/– Qe6 10.Nd5 Qg4 (10...Na6 11.Re5+–) 11.e3 (11.Nc7 Kd8 12.Rh7 Rh7 13.Na8=) 11...Qd1 12.Rd1 Nf6?? (better is 12...Kd8+/–) 13.Bf6+– gf6 (13...Kd7 14.Be5 c6+–) 14.Nc7 Kd8 15.Na8 Nc6 (15...Bd6 16.d3+–) 16.d3 ed3 17.Bd3 (17...Bd6 18.Ba6+–) 1–0. Steinmann,Joachim – Baj,Miroslaw, corr or01–002 E–mail, 2001.

6.Nc3 Nf6 7.h3 Bd7 8.e3 =.

6.d3 Nf6 7.de4 (7.Nd2 ed3 8.cd3 Qb6=) 7...de4 (7...Ne4? 8.f3+–) 8.c4 (8.h3 Bd7=+) 8...Nc6 (8...c5 9.h3 Bd7 10.bc5 Qc5 11.e3=+) 9.Qa4 0–0–0 (9...e3!? 10.f3 Be6=) 10.Nc6+/– bc6 (10...Qc6 11.Qa7 Be6 12.Nd2+/–) 11.g3 (11.f3 Bf5 12.g4+= (12.Qa7?! c5 13.Qa8 Kd7 14.Qa4 Ke7+/–)) 11...h5 (11...Be7 12.Bg2+=) 12.h3 h4?? (better is 12...Be6+=) 13.c5 Qe6 (13...Qd5 14.hg4 e3 15.f3 Ng4 16.Bh3+– (16.fg4 Qh1 17.Nc3 Qg1–+; 16.Rh4?? Qd2 17.Nd2 ed2 18.Kd1 Ne3)) 14.hg4 Ng4 15.e3 (15.Rh4 Rh4 16.gh4=+) 15...hg3?? (15...Qf5 16.f4 ef3+/–) 16.Qa6 Kb8 17.Rh8 Qf5 18.f4 ef3 19.Rf8 (19.Nd2 g2 20.Rf8 f2 21.Kd1 gf1Q 22.Qf1 Ne3 23.Ke2 Qd3 24.Kf2 Ng4 25.Kg2 Qd2 26.Kg3 Rf8 27.Bg7–+) 19...Rf8+/– 20.Qc6 (20.Nd2 g2 21.0–0–0 g1Q=+) 20...Qc2+– 21.Qb5?? (21.Qf3 Qb2 22.Bg2 (22.Qg4? Qf2 23.Kd1 Rd8 24.Kc1 Qf1 25.Kc2 g2–+) 22...Qc1 23.Ke2 Qc4 24.Ke1 Qc1 25.Ke2 Qc4 26.Ke1 Qc1 27.Ke2=) 21…Kc8 (22.Nd2 g2 (< 22...Qb2 23.Qa6 Kb8 24.Rb1+/–) 23.Qa6 Kd8 24.Bg2 fg2=+). Calschi,Michel – Bras,Yannick, corr EE/97.S.02, 1997.

6.h3 Bd7 =.

5.Nd4 Qg6

6.Nb5 Na6 7.e3 Be7 8.Be5 (8.Nd4 Nh6=) 8...Bg4=+ 9.Qc1 c6 (9...Bf6 10.Qb2=+) 10.Nd4= Nb8 11.d3 (11.f3 Nd7 12.Bg3 Bh5=) 11...Nd7=+ 12.Bf4 Ngf6 (12...Bf6 13.de4 de4 14.Nd2=+) 13.de4= de4 (< 13...Ne4 14.f3+/–) 14.h3 Bf5 (14...Qh5 15.Rh2 Bf5 16.g4 Bg4 17.hg4+–) 15.c4 (15.g4 Be6 16.Ne6 fe6=+) 15...c5 16.Nf5 Qf5 17.Qb2 (17.Qc3 0–0 18.Nd2 a5 19.ba5 Bd8=) 17...0–0 (17...Nh5 18.Bc7=+) 18.Be2 (18.Nd2 Rfd8=) 18...cb4 (18...Rfd8 19.0–0=) 19.ab4 a5 20.ba5 Ra5 21.0–0 Ra1 22.Qa1 Rd8 (22...Nc5 23.Rd1=) 23.Rd1 Re8 (23...b6 24.Qb2=) 24.Nc3 Bb4 (24...Nc5!?=) 25.Nd5+/– White begins to deal mighty blows 25...Bc5 26.Qa4 b6 27.Nf6 (27.Qb5 Qg6+=) 27...Nf6+= 28.Bg4 Qg6 (28...Ng4 29.Qe8) 29.Rd5! Bf8 (29...Nd5 30.Qe8) 30.Rg5 Qh6 31.Rf5 (31...b5 A) 32.Bh6 ba4 33.Be2 Ra8–/+ (33...gh6?! 34.Rf6 Ra8 35.Bh5=+); B) 32.cb5?! Qg6 33.Rg5 Qh6+–; C) < 32.Rb5 Ng4 33.Bh6 Nh6+–; D) 32.Qb5+–) 1–0. Hoebel,Hartmut (2420) – Karelin,Evgeny Petrovich (1705), corr EM/M/167 ICCF Email, 2001.

6.Nc3 Nf6 7.d3 (7.Ncb5 Na6=) 7...a6 8.de4 (8.e3 Bd6=) 8...de4 9.e3 Bd6 10.Qe2 0–0 11.Qc4 (11.Rd1 Rd8+=) 11...Nbd7 12.Qb3 (12.Qe2 c5 13.bc5 Nc5–/+) 12...Ng4 (12...Ne5 13.h3+=) 13.Nd5 Ndf6 (13...Nh2? 14.Rh2 Qg5 15.g3+–) 14.h3 Nd5 15.Qd5 (15.hg4 Nf6–/+) 15...Nh2 16.c4 (16.h4 h6–/+) 16...Nf1 17.Kf1 Rd8 (17...Rb8 18.Rd1–/+) 18.c5 c6 19.Qb3 Bc7 20.Bc3 (20.Kg1 a5–/+) 20...Rd5 21.Qc2 f5 (21...a5 22.Kg1–/+) 22.Qb3 (22.h4 Bd7+=) 22...Be6–/+ 23.Ne6 Qe6 24.Bd4 Qf7 (24...Rad8 25.Rd1–/+) 25.h4+= Rad8 26.Rh3 (26.h5 f4–/+) 26...R8d7 (26...f4 27.h5–/+) 27.h5 (27.Kg1 Qe6+=) ½–½. Birzer,Lothar – Lauer,Roland, DESC, 1999.

4.Nf3 f6

5.b5 Bd7 6.e3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.c4 Nh6 (10...e4 11.Nd4=) 11.Qc2 (11.bc6 bc6 12.d4 e4=) 11...Be7 (11...e4 12.Nd4=) 12.Be2 (12.d4 e4 13.bc6 Qc6=) 12...0–0 13.0–0 Kh8 (13...cb5 14.cd5 Rc8 15.Qb3=) 14.d3 Bd8 (14...cb5!? 15.cd5 Qd5=) 15.Rd1 Nf7 16.Nc3 Be6 17.cd5 cd5 18.Na4 (18.Bb2 Bb6=) 18...b6 (18...Be7 19.Nc3=) 19.Rc1 Nd7 20.e4 (20.Bb2 Be7=) 20...d4=+ 21.Nh4 Be7 22.Nf5 Qb4 (22...Qa3 23.Bb2 Qb4 24.Ne7 Qe7 25.Ra1=) 23.Ne7?? (better is 23.Rb1 Qa3 24.Bb2+–) 23...Qe7=+ 24.Nb2 (24.Qc6 Nd8 25.Qc2 Nb7=+) 24...Nc5 (24...Nd6 25.Nc4–/+) 25.Nc4=+ Qc7 (25...Bc4 26.Qc4 f5 27.ef5=+) 26.Qd1?? (better is 26.Nb6 Qb6 27.Qc5 Qc5 28.Rc5+/–) 26...Ra8 27.Bg4?? (27.Bb2 Kg8=+) 27...Bc4 (better is 27...Bg4 28.f3 Bd7–+) 28.dc4 (28.Rc4 Nd6 29.Rc1 Nb5–/+) 28...Ne4 29.Qf3 (29.Be6 Nc5 30.Bd5 Ra2–/+) 29...Nfd6 30.Be6 (30.Bb2 Ra2 31.Ba3 Qa7 32.Bd6 Ra1–+) 30...Ra2 31.Bd5 Nc5 (31...Rf2 32.Qh5 Qc8 33.Bc6–+) 32.Rb1 Qa7 33.g3?? (33.Qd1–+) 33...Ra1 34.Ra1 (34.Qd1 Rb1 35.Qb1 Qa4–+) 34...Qa1 35.Kg2 d3 36.Bf7 (36.Qe3 Qd1 37.Qf3 Qe1–+) 36...d2 (better is 36...Nf7 37.Qd5 h6–+) 37.Qd5 (37.Bh5 e4 38.Qd1–+) 37...d1Q 38.Qc6 Qf1 39.Kf3 Qc3 40.Kg4 (40...Qd4 41.Qe4 Qe4 42.f4 Qee2 43.Kh4 Nf5#) –+. TIROLOCO – Robecop, Live Game Caissa's Web, 2004.

5.Nc3 c6 6.e4 d4 7.Na2 Be6 8.c3 c5 (better is 8...d3!?=) 9.bc5+/– Qc5 10.cd4 ed4 11.Nd4 Ba2 12.Ra2 Nc6 13.Ne6 Qe7 14.Bc4 Rc8 15.Bd5 Nh6 16.0–0 Nf7 17.Qg4 Nd6 18.d4 g6 19.e5 fe5 20.de5 Ne5 (20...Nf5+–) 21.Be5 Rg8 22.Re2 Nf5 23.Bg3 Qa3 24.Ng7 (24.Ng7 Kd7 25.Be6 Kd8 26.Nf5+–) 1–0. Rooijen Van,Peter (1675) – Evans,Stanley, 58. LSS No Engine Cup Preliminary, 2012.

5.Nc3 d4 6.Ne4 Qc6 7.Ng3 =.

5.Nc3 Be6 6.Nb5 (6.e3 Ne7=) 6...Qd7=+ 7.e3 a6 (7...a5 8.d4=) 8.Nc3= c5 (8...Bd6=) 9.Be2 (9.bc5 Bc5 10.d4 Bd6+=) 9...Nc6 (9...e4 10.Nh4=+) 10.0–0 (10.Na4 cb4 11.Nb6 Qd8 12.Na8 Qa8 13.ab4 Bb4+/–) 10...c4 (10...cb4!? 11.ab4 Bb4–/+) 11.d4 (11.d3 Rd8=) 11...b5 (11...e4 12.Nd2=) 12.de5 (12.e4 de4 13.Ne4 Bd5+=) 12...fe5 13.Nh4 (13.Ng5!? Nf6 14.Ne6 Qe6 15.Bf3=) 13...Be7 14.Nf3 Bf6 (14...Nf6 15.Na2 Bd6 16.a4=+) 15.Ne1 (15.a4!?=) 15...Nge7=+ 16.f4 (16.Bh5 g6 17.Bf3 0–0=+) 16...ef4–/+ 17.Rf4 (17.Bh5 g6 18.Rf4 Be5–/+) 17...Ne5 (17...0–0 18.Nf3=+) 18.Nf3 (18.a4 0–0=+) 18...N5g6–/+ 19.Ne5?? (better is 19.Rf6 gf6 20.Nd4–/+) 19...Be5–+ 20.Rf1 (20.Rf3 Qc7 21.h3 Rd8–+) 20...Qd6 21.g3 Rd8 (21...Nf5 22.Qd2–+) 22.Bh5 (22.Bg4 Qb6 23.Be6 Qe6–+ (23...Qe3?! 24.Kh1 Bc3 25.Bf7 Kd7 26.Rf3 Qf3 27.Qf3 Bb2 28.Re1–+)) 22...Bh3 23.Bg6 (23.Rf3 Bf5–+) 23...Ng6 (23...Qg6 24.Rf3–+) 24.Rf2 Bg3! 25.Rf3 (25.hg3 Qg3) 25...Bh2 26.Kf2 (26.Kh1 Bg4–+) 26...Bg4 27.Nd5 (27.Ne2 Bf3 28.Kf3 Be5–+) 27...Qd5 28.Qd5 Rd5 29.Bg7 Rg8 (30.e4 Rd2 31.Ke3 Bf3 32.Kd2 Bf4 33.Kc3 Rg7–+) 0–1. trex1 – calponas, Live Game Caissa's Web, 2005.

5.c4 d4 6.e3 de3 7.fe3 Bg4 8.Nc3 Nd7 9.Be2 0–0–0 10.Nb5 Qc6?? (better is 10...Qe7 11.Na7 Kb8+–) 11.Na7 Kb8 12.Nc6 bc6 13.Nd4 ed4 14.Bg4 Ne5 (14...de3 15.de3 Bd6 16.c5 Nc5 17.Bd4+–) 15.Bd4 Nc4 16.Qa4 Ne7 17.Qa7# 1–0. Janek – Yalcin, internet, 2016.

5.d3 Be6 6.e3 =.

5.e3 b6 6.c4 Bb7 7.cd5 Bd5 8.Be2 (8.Nc3 Bb7+/–) 8...Nd7 (8...a5 9.Nc3=) 9.0–0 (9.Nc3 c6+/–) 9...Ne7 10.d3 Ng6 11.Nc3 Bb7? (11...c6 12.Nd5 Qd5 13.d4+/–) 12.Nd2 (better is 12.Nb5!? Qc6 13.d4+–) 12...Be7 13.Nde4 Qe6 14.Bf3 f5? (14...c6 15.Ng3=) 15.Nd2 (15.Ng5 Bg5 16.Bb7 Rb8+–) 15...e4? (better is 15...Bf3!? 16.Qf3 c6+=) 16.de4+– Nde5 (16...0–0–0+–) 17.ef5 Nf3 18.Nf3 (better is 18.Qf3!? Bf3 19.fe6+–) 18...Qf5 19.Nd4 Qg5 20.g3 0–0 (20...a6!?+/–) 21.Ne6+– Qh6 22.Nf8 Qh3 23.f3 Nh4? 24.Qe2 Rf8 25.gh4 Bd6?? 26.e4 Rf6 27.Rf2 Ba6 28.Qd2 Rg6 29.Kh1 Bh2 30.Rh2 Qf3 31.Rg2 Bf1 32.Rf1! Qf1 33.Kh2 Rg2 34.Qg2 Qf4 35.Kh3 1–0. Hal1958 – Taroak, playchess.de, 2005.

5.e3 Nd7 6.d4 Ne7 (6...e4 7.Nfd2=) 7.de5 fe5 (7...Ne5 8.Ne5 fe5 9.c4=) 8.c4+= c6 (8...a5 9.c5 Qe6 10.Nbd2+=) 9.Nc3 a6 (9...a5 10.b5+=) 10.Be2 g6? (better is 10...a5 11.b5 Qe6+=) 11.Ne4!+– Qe6 (11...de4 12.Qd6) 12.Nfg5 Qg8 13.Nd6 Kd8 14.Ngf7 Kc7 15.Ne8 (15.Nh8?! Kd6 16.cd5 cd5 17.Ng6 Qg6=) 15...Kb8 16.Ne5 (16...Qe6 17.Qd4+–; 16.Nh8?! Qh8 17.b5 ab5 18.cb5 c5+–; 16.Be5?! Ne5 17.Ne5 Nf5 18.cd5 Qd5 19.Qd5 cd5+/–) 1–0. pcmvr (2775) – cruyce (2585), net–chess.com, 2006.

5.e3 Bg4 6.c4 e4 7.h3 Bh5 8.g4 Bf7 9.Nd4 c6 10.cd5 Bd5 11.Nc3 h5 12.Nd5 Qd5 13.Qc2 1–0. Benassi,Aspasio – Sternik,Ryszard, b4/02/08, 2002.

5.e3 g6 6.c4 c6 (6...a5 7.cd5 ab4 8.e4+=) 7.Nc3 (7.d4 e4 8.Nfd2 Ne7+=) 7...Bg7 (7...a5 8.d4 e4 9.Nd2+=) 8.Rc1 dc4 (8...Ne7 9.cd5 Nd5 10.Nd5 Qd5 11.Bc4+/–) 9.Bc4+/– Ne7 (9...f5 10.d4+/–) 10.0–0 (10.d4 Bf5+/–) 10...Be6?? (better is 10...f5+/–) 11.Ne4+– (11...Qd7 12.Nc5 Bc4 13.Nd7 (13.Rc4?! Qd5 14.Nb7 c5+/–) 13...Bf1 14.Nc5+– (14.Qf1?! Nd7 15.e4 Rd8+–; 14.Kf1?! Nd7 15.e4 Rd8+–)) 1–0. pcmvr (2760) – cruyce (2370), net–chess.com, 2006.

5.d3 a5

6.b5 Qd7 7.a4 =+.

6.b5 Nd7 7.Nc3 (7.g3 Ne7 8.Bg2 Qb6 9.a4 Kf7 10.0–0 c6 11.Nc3 d4 12.Ne4; 7.e3 Ne7 8.Nc3 Kf7 9.Be2 Nb6 10.0–0 Bd7 11.Nh4 g6 12.Qd2; 7.c4 Ne7 8.Nc3 Nc5 9.d4 ed4 10.Nd4 Bd7 11.e3 0–0–0 12.Be2) 7...Kf7 8.g3 Nc5 9.d4 ed4 10.Nd4 f5 11.Bh3 Nf6 12.Bf5.

6.b5 Be6 7.e3= (7.g3 Nh6 8.Nc3 Be7 9.Bg2 Nd7 10.0–0 0–0 11.a4 d4 12.Ne4; 7.Nc3 Nh6 8.g3 Nd7 9.Bg2 Be7 10.0–0 0–0 11.e3 Nb6 12.Qd2; 7.Qd2 Kf7 8.Nc3 Ne7 9.e3 Nd7 10.Be2 g6 11.0–0 Bh6 12.Qe1; 7.Nbd2 Kf7 8.e4 Ne7 9.d4 ed4 10.Nd4 Nd7 11.c4 Re8 12.Be2) 7...Nd7 8.Be2 Nh6 9.0–0 Be7 10.Qd2 0–0 11.Nc3 Nb6 12.h3.

6.b5 Ne7 7.Nc3 (7.g3 Be6 8.Bg2 Qb6 9.a4 Kf7 10.0–0 Nd7 11.Nbd2 Nf5 12.e4; 7.e3 Bf5 8.Nc3 Nd7 9.Be2 Kf7 10.0–0 Be6 11.h3 g6 12.Qd2) 7...Kf7 8.g3 Be6 9.Bg2 Nd7 10.0–0 Qb6 11.e3 c6 12.a4.

6.b5 Kf7 7.Nc3 (7.g3 Ne7 8.Nc3 Bf5 9.e4 Be6 10.ed5 Nd5 11.Ne4 Qe7 12.c4) 7...Be6 8.e3 Nh6 9.g3 Nd7 10.Be2 Be7 11.0–0 Rhd8 12.Re1.

6.b5 Bg4 7.Nbd2 (7.Nc3 Ne7 8.e3 Nd7 9.Be2 Bf5 10.0–0 Be6 11.Qd2 Kf7 12.a4; 7.g3 Ne7 8.Bg2 Nd7 9.Nc3 Nc5 10.0–0 0–0–0 11.Qd2 Kb8 12.d4; 7.e3 Nd7 8.Nc3 Nh6 9.Be2 Be7 10.0–0 Be6 11.Qd2 0–0 12.h3; 7.h3 Be6 8.Nbd2 Qb6 9.c4 Ne7 10.cd5 Nd5 11.e4 Nf4 12.d4) 7...Nd7 8.g3 (8.c4 Nb6= (8...Ne7 9.e4 d4 10.Be2 Nc5 11.0–0 Be6 12.Qc2) 9.Rc1 dc4 10.dc4 Qd7 11.c5 Nd5 12.h3; 8.h3 Be6 9.e4 Nc5 10.ed5 Bd5 11.Be2 Kf7 12.0–0) 8...Ne7 (8...Nc5 9.Bg2+= (9.c4 e4 10.d4 Ne6 11.Nh4 Ne7 12.Bg2) 9...Na4 10.Qb1 Ne7 11.0–0 Kf7 12.e4) 9.Bg2= (9.c4 Nc5 10.Qc2 Qe6 11.Bg2 d4 12.h3) 9...a4 (9...c6 10.bc6 bc6 11.c4= (11.0–0 Kf7 12.Rb1) 11...Nc5 12.0–0; 9...Nc5 10.a4 Kf7 11.0–0 Rd8 12.e4) 10.c4 (10.0–0 Nc5 11.c4 d4 12.Ne4) 10...d4 (10...Nc5 11.0–0 d4 12.Ne4) 11.h3 (11.Ne4 Qb6 12.0–0) 11...Bh5 (11...Be6 12.Ne4) 12.0–0 (12.Nh4+/–) 12...Nc5 13.Ne4 (13.Re1 g5=) 13...Ne4 14.de4 Qc5 (14...Bf7 15.Rc1=) 15.Qd3 (15.Rc1 Bf7=) 15...Nc8 16.Rfc1 Be7 (16...Nd6 17.Rc2+=) 17.Nh4= Bf7 18.Nf5 Bf8 19.e3 de3 20.Ne3 c6 21.Rab1 Nb6 22.Bf1 (22.Qe2 Rd8=) 22...Rd8 23.Qe2 g6 (23...Be6 24.Bg2=) 24.bc6 bc6 (24...Qc6 25.Nd5 Nd7 26.Rd1+=) 25.Rd1 Rd1 26.Rd1 (26.Qd1 Be6+=) 26...Be7= 27.Kh2 0–0 28.Bc1 Rd8 29.Rd8 Bd8 30.Qc2 Be7 31.Ng4 (better is 31.Be2!?=) 31...Bc4–/+ 32.Be3 Qb5 33.Bb6 (better is 33.Bg2!? Bb3 34.Qc3–+) 33...Bf1–+ 34.Be3 Bd3 (34...Ba3?! 35.Qa2 Qb3 36.Qa1+=) 35.Qd1 Qb1 (35...h5 36.Nh6 Kg7 37.g4–+) 36.Nh6? (36.Qa4 Be4 37.Bc1–+) 36...Kg7 37.Nf5 (37.Qb1 Bb1 38.Bc1 Be4 39.Ng4–+) 37...gf5 38.Qh5 f4 (38...fe4?? 39.Bh6 Kg8 40.Qe8 Bf8 41.Qf8) 39.gf4 Be4 (39...Ba3?! 40.Qg4 Kf8 41.Qc8 Kf7 42.Qd7 Kg8 43.Qe6 Kh8 44.Qc8 Kg7 45.Qg4 Kh8 46.Qc8 Kg7 47.Qg4=) 40.f5 (40.Qe8 Qh1 41.Kg3 ef4 42.Kh4 fe3 (42...Ba3?! 43.Qd7 Kh6 44.Bf4 Kg6 45.Qg4 Kf7 46.Qd7 Be7 47.Bd6–+) 43.Qe7 Kg6 44.Qe8 Kf5 45.Qd7 Ke5 46.Qe7 Kd5 47.Qf7 Kc5 48.Qf6 Kc4 49.Qe6 Kc3 50.Qe5 Kb3–+) 40...Qh1 41.Kg3 Qg2 (41...Qg2 42.Kh4 Ba3 43.Qh6 Kf7 44.Qh7 Qg7 45.Qh5 Ke7–+) 0–1. Danek,Vaclav – Vedral,O (2250), Open A, Klatovy CZE, 2005.

6.b5 Nh6 7.c4 (7.Nfd2 Be6 8.e4 d4 9.Nc4 Qd7 10.Nbd2 Qb5 11.Be2 Qc6 12.a4; 7.e3 Kf7 8.c4 Be6 9.cd5 Bd5 10.Nc3 Nd7 11.d4 Be6 12.Qc2; 7.Qd2 Be6 8.g3 Be7 9.Bg2 d4 10.c3 c5 11.0–0 0–0 12.Qc2; 7.g3 Be7 8.Nc3 Be6 9.Qd2 Nd7 10.Bg2 0–0 11.0–0 Nf5 12.e4) 7...dc4 8.Nc3 Nd7 9.dc4 Nb6 10.Qb3 Qc5 11.e3 Bf5 12.Nd2.

6.c3 ab4 7.ab4 Ra1 8.Ba1 Ne7 9.Nbd2 Ng6 10.g3 (10.e4 Nc6=) 10...Be7+= 11.Bg2 0–0 12.0–0 Be6 13.e4 de4 14.Ne4 Qb6 15.Qc2 (15.Qe2 Nc6=) 15...Nc6+= 16.Rb1 Ra8 17.b5 (17.Bb2 Qb5+=) 17...Nb8 (17...Ba2!? 18.Rb2 Bd5+=) 18.c4= Nd7 19.d4 ed4 (19...Bf5 20.Re1=) 20.Bd4+= c5 (20...Qa5!?+=) 21.bc6+/– Qc6 22.Nfd2 Qa4 (22...Qc8 23.Rb7! Nge5 24.Rb1+/–) 23.Qa4 Ra4 24.Nc3 (24.Rb7 Ra2 25.Bb2 Nc5 26.Nc5 Bc5+–) 24...Rb4 25.Rb4 Bb4 26.Bb7 Nge5 27.Bd5 Bd5 28.cd5 Bc3 29.Bc3 Nb6 30.Be5 (30.d6 Kf7 31.Ba5 Na8+/–) 30...fe5 31.d6 (31.Nf3!?+/–) 31...Kf7+= 32.Ne4 Ke6 33.Kg2 Nc8 (33...Nc4 34.Ng5 Kd6 35.Nh7+=) 34.Ng5 Kd6 35.Nh7 Ke6 (35...e4 36.Ng5 Ke5 37.f4 Kd5 38.g4+/–) 36.Kf3 Nd6 37.Kg4 Nc8 38.Kg5 Ne7 39.Nf8 Kf7 40.Nd7 Ke6 41.Nb6 Kf7 42.Nc4 Ke6 43.Ne3 Kf7 44.h4 Ke6 45.g4 Kf7 46.h5 Kf8 47.Nc4 1–0. Izquierdo,Daniel (2325) – Arancibia Guzman,Eduardo (2365), Santiago zt Santiago de Chile, 1996. (=1.Nf3 d5 2.b4 Qd6 3.a3 e5 4.Bb2 f6 5.d3 a5)

6.c3 Be7 7.Nbd2 =.

6.c3 Bg4 =.

6.Nc3 ab4 7.ab4 Ra1 8.Qa1 Qb4 9.Nd2 c6 10.g3 Kf7 11.Bg2 Bd6 12.0–0.

6.Nbd2 Ne7 (6...Kf7 7.c4 ab4 8.ab4 Ra1 9.Qa1 Ne7 10.Qa3 Nd7 11.e4 d4 12.c5; 6...ab4 7.ab4 Ra1 8.Qa1 Qb4 9.e4 Ne7 10.Bc3 Qb6 11.Be2 Qc6 12.0–0) 7.c4 (7.c3 Kf7 8.g3 Nbc6 9.b5 Nd8 10.Bg2 Bd7 11.c4 c6 12.Rc1; 7.g3 ab4 8.ab4 Ra1 9.Qa1 Qb4 10.Bc3 Qd6 11.Bg2 Nbc6 12.0–0; 7.b5 Kf7 8.e4 c6 9.d4 ed4 10.ed5 cd5 11.Bd3 Nd7 12.0–0) 7...ab4 8.ab4 Ra1 9.Qa1 Qb4 10.g3 Kf7 11.Bg2 dc4 12.Bc3.

5.d3 Ne7

6.Nc3 A) 6...Kf7 7.g3 (7.e3 Nd7 8.Be2 a5 9.b5 Nb6 10.0–0 Bd7 11.h3 g6 12.a4) 7...a5 8.b5 Be6 9.Bg2 Nd7 10.0–0 Qb6 11.a4 d4 12.Ne4; B) 6...Be6 7.e3 (7.g3 a5 8.b5 Kf7 9.Bg2 Nd7 10.0–0 Qb6 11.a4 d4 12.Ne4; 7.Qd2 a5 8.b5 Nd7 9.g3 Kf7 10.Bg2 Qb6 11.0–0 d4 12.Ne4) 7...Kf7 8.Be2 Nbc6 9.0–0 a6 10.Qd2 Nf5 11.Nd5 Bd5 12.e4; C) 6...Nd7 7.g3 (7.e3 Kf7 8.Be2 a5 9.b5 Nb6 10.0–0 Bd7 11.Nh4 g6 12.Qd2) 7...Kf7 8.Bg2 a5 9.b5 g6 10.Qd2 Nb6 11.0–0 Bd7 12.Rfe1; D) 6...a5 7.b5 Nd7 8.g3 Qb6 9.e3 Kf7 10.Bg2 c6 11.0–0 cb5 12.Nh4.

6.e3 A) 6...Kf7 7.Nc3 (7.Be2 a5 8.b5 Bf5 9.Nc3 Nd7 10.0–0 Be6 11.Qd2 Ng6 12.h4) 7...Nbc6 8.Be2 a6 9.0–0 Be6 10.Qd2 Nf5 11.e4 de4 12.Ne4; B) 6...Bd7 7.c4 (7.Nc3 Kf7 8.Qd2 a6 9.Be2 g6 10.0–0 Bh6 11.Nh4 Nbc6 12.Rae1; 7.Be2 a5 8.Nc3 ab4 9.ab4 Ra1 10.Qa1 Qb4 11.Ba3 Qa5 12.0–0) 7...Na6 8.Nc3 c5 9.b5 Nc7 10.Be2 Kf7 11.0–0 a6 12.a4; C) 6...a6 7.Nc3 (7.Be2 Nbc6 8.Nc3 Be6 9.Qd2 Kf7 10.0–0 Nf5 11.Nd5 Bd5 12.e4; 7.c4 Nbc6 8.Nc3 Be6 9.Be2 Kf7 10.0–0 g6 11.Qc2 Rd8 12.h3; 7.Qd2 Nbc6 8.Nc3 Kf7 9.Be2 Be6 10.0–0 Nf5 11.Nd5 Bd5 12.e4; 7.Nbd2 Nbc6 8.Be2 Kf7 9.0–0 Be6 10.c4 Ng6 11.cd5 Qd5 12.Ne4) 7...Nbc6 8.Be2 Kf7 9.0–0 Be6 10.Na4 Nf5 11.Nc5 b6 12.Ne6; D) 6...a5 7.b5 Nd7 8.Nc3 g6 9.Be2 Bg7 10.h4 Nc5 11.d4 Ne6 12.e4.

6.g3 A) 6...Kf7 7.Nc3 (7.Bg2 a5 8.b5 Qb6 9.Nc3 Be6 10.0–0 Nd7 11.a4 d4 12.Ne4) 7...Nbc6 8.Bg2 a5 9.b5 Nd4 10.e3 Nf3 11.Bf3 g6 12.0–0; B) 6...a5 7.b5 (7.c3 ab4 8.cb4 Kf7 9.Nc3 Be6 10.Bg2 Nbc6 11.0–0 Qd7 12.b5) 7...Qb6 8.Nc3 Kf7 9.Bg2 Be6 10.0–0 Nd7 11.a4 d4 12.Ne4; C) 6...Be6 7.Nc3 (7.Bg2 a5 8.b5 Nd7 9.0–0 Kf7 10.Nc3 Qb6 11.a4 d4 12.Ne4; 7.Qd2 a5 8.b5 Nd7 9.Nc3 g6 10.Bg2 Bg7 11.0–0 0–0 12.a4; 7.Nbd2 a5 8.Bg2 Qb6 9.c4 ab4 10.ab4 Ra1 11.Qa1 dc4 12.Nc4) 7...a5 8.b5 Qb6 9.Bg2 Nd7 10.0–0 Kf7 11.a4 d4 12.Ne4; D) 6...Nbc6 7.Nc3 (7.Bg2 Kf7 8.0–0 Be6 9.b5 Nd8 10.Nbd2 a6 11.a4 Qb4 12.Nb3; 7.b5 Nd4 8.Nd4 ed4 9.Bd4 Nf5 10.Bb2 Qc5 11.Nd2 Be6 12.e4) 7...Kf7 8.Bg2 a5 9.b5 Nd4 10.e3 Nf3 11.Bf3 g6 12.0–0.

5.d3 Kf7

6.Nc3 A) 6...Nc6 7.g3 (7.e3 a6 8.Be2 Nh6 9.0–0 Be6 10.Qd2 Be7 11.h3 Rhe8 12.e4) 7...Nge7 8.Bg2 a5 9.b5 Nd4 10.e3 Nf3 11.Bf3 g6 12.0–0; B) 6...a5 7.b5 Nh6 8.g3 Qb6 9.Bg2 d4 10.Nd5 Qb5 11.Rb1 Qc5 12.c3.

6.c4 dc4 7.Nc3 (7.e3 Nc6 8.Nc3 Be6 9.dc4 Qd1 10.Rd1 Nge7 11.Be2 g5 12.Ne4; 7.dc4 Qd1 8.Kd1 Be6 9.Nc3 Bc4 10.Kc2 a5 11.e4 Be6 12.ba5; 7.Nbd2 cd3 8.Ne4 Qd5 9.Nc3 Qd6 10.Ne4 Qd5 11.Nc3 Qd6 12.Ne4) 7...a5 8.b5 cd3 9.Ne4 Qd5 10.Qd3 Ne7 11.0–0–0 Qd3 12.Rd3.

6.g3 A) 6...a5 7.b5 Ne7 8.Nc3 Qb6 9.Bg2 Be6 10.e3 c6 11.a4 Nd7 12.0–0; B) 6...Bg4 7.Nc3 (7.Bg2 a5 8.b5 Nd7 9.Nc3 Ne7 10.0–0 g6 11.e4 d4 12.Na4) 7...Bf3 8.ef3 Nc6 9.Bg2 Nge7 10.0–0 Nd4 11.f4 ef4 12.Re1; C) 6...Be6 7.Nc3 (7.Bg2 a5 8.b5 Ne7 9.Nc3 Nd7 10.0–0 Qb6 11.e3 c6 12.a4; 7.Nbd2 a5 8.Bg2 ab4 9.ab4 Ra1 10.Qa1 Qb4 11.0–0 Nc6 12.Rb1) 7...a5 8.b5 Nd7 9.Bg2 Qb6 10.0–0 Bd6 11.a4 Ne7 12.e4; D) 6...Ne7 7.Nc3 (7.Bg2 a5 8.b5 Qb6 9.Nc3 Be6 10.0–0 Nd7 11.e3 c6 12.a4) 7...a5 8.b5 Qb6 9.Bg2 Be6 10.0–0 d4 11.Ne4 Nf5 12.c3.

5.d4 e4

6.Nfd2 Bg4 7.c4 c6 8.Qc2 Nd7 9.Nc3 Ne7 (9...Rc8!?+=) 10.cd5+/– f5 (10...Nd5 11.Nde4 Qe6 12.e3+/–) 11.Nc4 Qf6 12.Ne3 Bh5 13.dc6 bc6 14.g4! fg4 (14...fg4 15.Qe4; 14...Bg4 15.Ng4) 15.d5 Qg6 16.Rd1 c5 (better is 16...a5 17.dc6 Qc6+–) 17.d6 Nc6 18.bc5 Nc5 (18...Rc8+–) 19.Nb5 Rc8 (19...Nd3 20.ed3 Kd7 21.de4+–) 20.Qc5 (20...Qf7 21.d7 Qd7 22.Qh5 Qf7 23.Qg4 Bb4 24.ab4+–) 1–0. pierre (2070) – thotares (1650), internet, 2007.

6.Nfd2 Nh6 7.e3 a5 8.c4 =.

6.Nfd2 Nh6 7.e3 Be7 8.c4+= c6 9.Nc3 Be6 10.Rc1 0–0? (better is 10...a6!?+=) 11.cd5+– cd5 12.Nb5 Qd7 13.Nc7 Nc6 14.Na8 Ra8 15.Nb3 Qd6 (15...Rc8 16.b5 Nd8 17.Nc5+–) 16.Nc5 Bc8 17.Qb3 Kh8 18.Qc2 f5 19.g3 (19.Be2 f4+–) 19...Nd8 20.b5 g5 Black intends f4 (20...Nhf7 21.Be2+–) 21.Be2 Ndf7 22.Nb3 (22.Qc3 Kg8+–) 22...f4 23.gf4 gf4 24.Qc7 (24.Nc5 f3 25.Bf1 Qd8+–) 24...f3 25.Qd6 Nd6 (25...Bd6 26.Bf1+/–) 26.Bf1 Bh4 27.h3 Nhf5 28.Rc3 Be6 (28...b6 29.Rg1+/–) 29.Rg1 b6 30.a4 h5 (30...Rc8 31.Rc8 Bc8 32.Bc1+/–) 31.Na1 Kh7 32.Nc2 Nc4 33.Bc4 dc4 The passed pawn on d4 quickly leads to threats 34.Nb4 Ne7? (better is 34...Rc8+/–) 35.d5!+– Nd5 Theme: Interference (35...Bd5 36.Nd5) 36.Rc4 (36.Rc4 Rg8 37.Rg8 Kg8 38.Re4 Nb4 39.Rb4+– (39.Rh4?! Nd3 40.Kd2 Nb2+=; 39.Re6?! Nd3 40.Kf1 Nb2+=)) 1–0. Guluev,Shaig – Abbasov,Farid (2290), AZE–Cup Azerbaijan, 1999.

6.Nfd2 Nh6 7.e3 f5 8.c4 f4 (8...c6!?+=) 9.Qh5 g6 10.Qd5 Qd5 11.cd5 fe3 12.Ne4 ef2 13.Nf2 Bg7 (13...Nf5 14.Nc3 a5 15.Nb5+/–) 14.Bb5 Bd7 15.Bc4 Nf5 16.0–0 Kd8 17.Nd2 Bd4 18.Rab1 Re8 19.Bd4 Nd4 20.g4 Nc2 21.Rb3 Ne3 22.Rc1 Ng4 23.Nfe4 Bf5 24.Nc5 b6 25.Ne6 Be6 26.de6 Ne5 27.Re3 Ng4 (better is 27...Nc4!? 28.Nc4 a6=) 28.Re4+/– Nf6 29.Rf4 Ke7 30.Rcf1 Nh5? (better is 30...b5 31.Ba2 Ng8 32.Rf7 Kd8+–) 31.Rf7 Kd6 (31...Kd8 32.Ne4 a5 33.Bb5+–) 32.Re1 (better is 32.Rd1!? Nf4 33.Nf3 Kc6 34.Nd4 Kb7+–) 32...a5 (32...Nf6+–) 33.b5 (33...Nf6 34.Rf6+–; 33.Ne4 Ke5 34.Nc3 Kd4 35.Re4 Kc3 36.Rf3 Kd2 37.Re2 Kd1 38.Rf1#) 1–0. Lukovski,Lev (2105) – Raabe,Martin, Leverkusen Bayer op 2nd, 1997.

6.Nh4 g5 7.Nf3 (7.c4 gh4 8.cd5 a5–+) 7...ef3 8.gf3 (8.ef3 Be6–+) 8...Ne7 (8...a5 9.b5–+) 9.e4 Bg7 10.Bb5 (10.Nd2 Nbc6–+) 10...c6 11.Bd3 (11.Bf1 Be6–+) 11...Bh3 12.Bf1 Bf1 13.Kf1 Nd7 14.Nd2 Nb6 15.Qe2 (15.Rc1 Qe6–+) 15...Na4 16.e5 (16.Rb1 Nb2 17.Rb2 0–0–0–+) 16...Qc7 17.ef6 (17.Bc1 fe5 18.Nb3 h6–+) 17...Bf6 (17...Nb2?! 18.fg7 Rg8 19.Rg1 Rg7 20.h4–+) 18.Rb1 Nb2 19.Rb2 Bd4 20.c3 (20.Rb1 0–0–0–+) 20...Bc3 21.Rb3 (21.Rc2 Bf6–+) 21...Qe5 22.Qe5 (22.Rg1 Rd8–+) 22...Be5 23.h4 (23.Rb1 Ng6–+) 23...gh4 24.Re3 (24.Rh4 h5–+) 24...Bf4 25.Re2 Bd2 26.Rd2 Ng6 27.Re2 Kd7 28.Kg1 (28.Rb2 Rhf8–+) 28...Rhf8 29.Re3 a5 30.Kh2 (30.ba5 Ra5 31.Kh2 Rfa8–+) 30...ab4 (30...ab4 31.ab4 Ra2–+) 0–1. Davies – Miraglia, email CTON, 1997.

5.e3 a5

6.b5 c5 7.c4 d4 8.d3 Be7 9.Nbd2 f5 10.ed4 ed4 11.Qe2 (11.Be2 Nf6=) 11...Nd7 12.0–0–0 b6 (12...Nh6 13.Re1=) 13.g3 Bb7 14.Bh3 g6 15.Rhe1 0–0–0 16.g4 Rf8 17.Bf1?? (17.gf5 gf5 18.Qe6 Qc7=) 17...Nb8?? (better is 17...fg4 18.Ne5 Ne5 19.Qe5 Qe5 20.Re5 Bd6–+) 18.Ng1 (18.gf5 gf5 (18...Rf5? 19.Bh3+–) 19.Qe6 Nd7=) 18...Qd8 (18...Qh2 19.gf5 gf5 20.Ngf3–/+) 19.Ngf3 (19.gf5 gf5 (worse is 19...Rf5 20.Bh3+–) 20.Ngf3 Nd7=) 19...Qd6 (better is 19...fg4 20.Ne5 Nh6 21.Ng4 Nf5+=) 20.Nb1?? (20.gf5 gf5 (20...Rf5? 21.Bh3+–) 21.Qe6 Nd7=) 20...Nd7 21.Nbd2 Rd8?? (better is 21...fg4 22.Ng1 h5–+) 22.Bh3 Rf8 23.gf5 gf5 24.Qe6 Rf6 25.Rg1?? Kc7 26.Rde1?? h5 27.Kc2?? Bc8 28.Bf1?? Nb8 29.Qd6+/– ½–½. Leon Acosta,Miguel (2005) – Zamarbide Inarrea,D (2210), Linares ESP, 2013.

6.b5 Be6 7.d4 Nd7 8.de5 fe5 9.c4 Ngf6 10.cd5 Bd5 11.Nc3 Bf7 12.Ng5 Qd1 13.Rd1 Bb3 14.Rc1 0–0–0 (14...a4 15.Nge4=) 15.Nce4 (15.Nf3 e4 16.Nd2 Nc5+=) 15...Bd5 16.Nd2 Kb8 (16...e4 17.Be2+=) 17.Ngf3 (17.e4!? Bg8 18.Be2+=) 17...e4= 18.Nd4 Nc5 (18...Nb6 19.Nf5+=) 19.Nc4 (19...Na4 20.Ba1=+; better is 19.Nf5!?+=) =+. Bennett,Hilton – Kaniak,Andrzej, email 4AMM–F, 1998.

6.b5 Be6 7.d4 Nd7 8.de5 fe5 9.c4 Ngf6 10.cd5 Bg4 11.Qc2!? Bf3 12.gf3 Nd5 13.Nd2 Be7 14.Bc4 N5b6. Michael Schirmer.

6.b5 Be6 7.d4 Nd7 8.de5 fe5 9.c4 Ngf6 10.cd5 Bg4 11.Be2 e4 12.Nd4 Be2 13.Qe2 Qd5 14.Nc3 Qf7 15.f3 ef3 16.Qf3 0–0–0 (16...Rb8 17.Qf5 Qe7 18.Nd1+=) 17.0–0 Re8 (17...Bd6 18.Rac1+/–) 18.Ne4 (18.Rac1!?+/–) 18...Qd5+= 19.Nf6 Nf6 (19...Qf3 20.Rf3 gf6 21.Nf5+=) 20.Rac1 Qf3 21.Rf3 Rg8 22.Nb3 Ng4 23.Na5 (23.h3 a4 24.hg4 ab3+/–) ½–½. Schirmer,Michael – Kaniak,Andrzej, email 4AMM–F, 1998.

6.c3 Ne7 7.d4 e4 8.Nfd2 Be6 (8...Nd7 9.Be2=) 9.Be2 f5 10.0–0 g5 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.Nb3 b6 12.ba5 ba5 13.c4 f4 14.Nc3 h5 (14...Nd7!?+=) 15.cd5 (15.Bh5 Kd8+–) 15...Nd5 (15...Bd5 16.Bh5 Kd8 17.Nc5+/–) 16.Ne4+– Qe7 17.Bh5 Kd8 18.Nbc5 Bf5 19.Bf3 g4 (19...fe3 20.Qb3 c6 21.fe3+/–) 20.Nb7 (20.Qb3 c6 21.Nb7 Kc7=) 20...Kc8 (20...Ke8 21.Ned6 cd6 22.Bd5+/–) 21.Ned6! cd6 (21...Qd6 22.Nd6) 22.Bd5 Qh7 23.h3 gh3 24.Qa4 Bd7 (24...Kc7 25.Rfc1 Kb6 26.Nd6 Bd6 27.Ba8 hg2 28.Qb3 Ka6 29.Bg2 Bd3 30.Qd3 Qd3=) 25.Rac1 Nc6 26.Rc6 Bc6 27.Qc6 (27.Bc6 hg2 28.Nd6 Bd6 29.Bd7 Kd8 30.Kg2 Qe4 31.f3 Rg8 32.Bg4 g4 33.Kh3 Rg3 34.Kh2 Qh7) 27...Kb8 28.Nd6 (28...h2 29.Kh1 Bd6 30.Qb6 Kc8 31.Be6 Qd7 32.Rc1 Bc7 33.Qc7#) 1–0. Zylla,Johannes – Manninen,Juha, corr ICCF tt, 1990.

5.e3 c6

6.d3 Ne7 7.Be2 Nf5 8.0–0 Be7 (8...a5 9.e4 Nh6 10.b5+=) 9.Nbd2 Be6 10.c4 Nd7 11.cd5 cd5 (11...Qd5? 12.e4 Qd6 13.ef5 Bf5 14.d4+–) 12.Rc1 (12.e4 Nh6+=) 12...0–0 13.e4 Nh6 14.ed5 (14.d4 Nf7+=) 14...Bd5 15.Nc4 Qe6 16.Re1 Rfc8 17.Ne3 Bb3 18.Qd2 Nb6 19.Rc8 Rc8 20.Rc1 Na4 21.Rc8 Qc8 22.Nc4 (22.Bd1 Bd1 23.Qd1 Nb2 24.Qb3 Nf7 25.Qb2 Bd6=) 22...b5 23.Na5 (better is 23.Ne3=) 23...a6?? (better is 23...Bd5+=) 24.Nb3+– Qe6 25.Nc1 Nf5 26.Bd1 Kh8 (26...Nb2 27.Bb3 Nc4 28.Qe2+–) 27.Ba4 ba4 28.Qc2 h5 (28...Qd7 29.Ne2+–) 29.Ne2 (29.Qa4 Kh7+–) 29...Qd7 (29...Qb3 30.Qb3 ab3 31.Nd2+–) 30.Nd2 (30.d4!? ed4 31.Ned4 Nd4 32.Nd4 Bd6+–) 30...h4 31.h3 g5 (31...a5 32.ba5 Bf8 33.Nc3+–) 32.Nc4 Kg7 33.Qd2 (better is 33.Nb6 Qd8 34.Na4 a5+–) 33...Kg6 (33...Nd6 34.Nd6 Bd6 35.Nc3+–) 34.d4 (34.Be5!? Kh7 35.Bc3 Qe6+–) 34...e4 35.Ne3 (35.Qc2 Qb5+–) 35...Nd6 (35...Ne3 36.Qe3 f5 37.f3+–) 36.Nc3 f5 37.Qc2 Bf6 (37...Qc6 38.d5 Qc8 39.Qe2+–) 38.Ncd5 (38.Na4 a5+–) 38...Bg7 39.Nc4 Nb5 40.Ncb6 Qd6 Black prepares f4 (40...Qe6 41.Qc5+–) 41.Qc5 (41.Nc8 Qd7 42.Nde7 Kh7+–) 41...Qe6 (41...Qc5 42.bc5 (42.dc5?! Bb2 43.c6 Ba3+/–) 42...Bd4 43.Bd4 Nd4 44.Ne7 (worse is 44.Na4 Kf7+–) 44...Kf6 45.c6+–) 42.Ne3 (42.Ne7 Kf7 43.Nf5 Bf8+–) 42...Qf7 (42...f4 43.Nec4 e3 44.fe3 (44.Na4?! e2 45.Ne5 Be5 46.Qc2 Kf7 47.Qe2 Nd4+–) 44...fe3 45.Ne5 (45.Na4?! e2 46.Ne5 Be5 47.Qc2 Kf7 48.Qe2 Bd4 49.Kf1 Qf6 50.Ke1 Bb2 51.Qb2 Qb2 52.Nb2 Na3=) 45...Be5 46.de5+– (46.Qe5?! Qb6 47.Qe3 Qf6+–)) 43.Nbc4 (43.Na4 Qd7 44.Nb6 Qf7+–) 43...f4 44.Ne5 (better is 44.Qc6 Kh7 45.Ng4+–) 44...Be5 45.Qe5 fe3 46.fe3 Qf5 47.Qf5 (better is 47.Qe8 Kh7 48.Qd8+–) 47...Kf5+/– 48.Kf2 Nd6 49.d5?? (better is 49.Bc1+/–) 49...Nc4+= 50.Bc1 Ke5 51.g3 Kd5 52.gh4 gh4 53.Ke2 Kc6 54.Kd1 Kd5 (54...a5!? 55.ba5 Na5–/+) 55.Kc2 (55.Ke2 Kd6+=) 55...Nd6 56.Kc3 Nb5 57.Kc2 Kc4 58.Bb2 Kd5 59.Bc1 Nd6 60.Bb2 (60.Kc3 Nf7+=) 60...Nc4 61.Bc1 Ne5 62.Kc3 (62.Bb2 Nf3 63.Bf6 Ke6=) 62...Nf3+= 63.Bb2 (63.Bd2 Ke6 64.Kc2–/+) 63...Ng1–/+ (63...Ng1 64.Kc2 Ke6–/+ (64...Nh3?! 65.Bf6–/+)) 0–1. Fournier,Frederic (1750) – lolamaster (1800), Active, 2007.

6.d4 Nd7 7.c4+= e4 8.Nfd2 Ne7 9.cd5 (9.Nc3 f5+=) 9...cd5 (< 9...Qd5 10.Nc3 Qf5 11.Nde4+–) 10.Nc3 a6 11.Be2 g6 (11...f5 12.Rc1+=) 12.b5 (12.Rc1 Bg7+=) 12...Nb6 (12...f5 13.a4+=) 13.a4 White gets strong initiative 13...a5 (13...Qb4 14.Qc2 ab5 15.Ba3 (15.ab5?! Ra1 16.Ba1 h5+=; 15.Bb5?! Bd7+–) 15...Ra4 16.Bb5 Bd7 17.Ba4 (17.Na4?! Qb5 18.Be7 Be7 19.Nb6 Qb6+–) 17...Ba4 18.Qc1+– (18.Bb4 Bc2 19.Be7 Ke7+=; < 18.Na4 Qa4 19.Qa4 Na4 20.Be7 Ke7 21.Ra4 Kd6+–)) 14.Ba3+/– Qe6 15.0–0 (15.Rc1 Bd7+/–) 15...Bd7 (15...f5 16.Qb3+/–) 16.Nb3 Nf5 (16...Qf5 17.Bc5 Qe6 18.Rc1+/–) 17.Nc5 Qf7 (17...Bc5 18.dc5 Rc8 19.Qd2+/–) 18.Nb7+– Ba3 (18...Bb4 19.Bb4 ab4 20.Na2 Ra4 21.Nc5+–) 19.Ra3 0–0 (19...Be6 20.Nc5+–) 20.Nc5 Nd6 (20...Rfc8 21.Rb3+–) 21.Ra1 Rfd8 22.f3 ef3 23.Bf3 f5 24.Qb3 Ne4?! 25.N3e4 de4 26.Qf7 Kf7 27.Be4 (27...Rac8 28.g4+–) 1–0. pcmvr (2780) – cruyce (2585), net–chess.com, 2006.

5.e3 Nc6

6.c4 d4 7.c5 Qd8 (7...Qd5 8.b5 Na5 9.ed4 ed4 10.Qe2 Kf7 11.Bd4+=) 8.Bc4 (8.ed4 e4 9.Qe2 Qe7+/–) 8...Nge7 (8...de3 9.fe3 e4 10.Nh4+=) 9.0–0 de3 10.fe3 Nf5 11.Nc3 Qe7 12.e4 Nfd4+– 13.Nd5 Nf3 14.Rf3 Nd4?? 15.Bd4 Qd7 16.Rf6! ed4 17.Qh5 Kd8 18.Rf7 Qc6 19.Qg5 (19.Qg5 Qf6 20.Nf6 Bd7 21.Ng8 Kc8 22.Rf8 Be8 23.Be6 Kb8 24.Re8#) 1–0. pcmvr (2840) – islanderfan (1875), net–chess.com, 2009.

6.c4 Be6 7.c5 Qd7 8.Nc3 d4 9.ed4 ed4 10.Nb5 d3 (10...Bg4 11.Be2 d3 12.Bd3=) 11.Nbd4 (11.Bd3 Qd3 12.Nc7 Kf7 13.Na8 Bc4 14.Ng5 fg5 15.Qf3 Qf3 16.gf3 Be7+=) 11...0–0–0 (better is 11...Bc4!? 12.Qa4 Nd4 13.Qd7 Kd7 14.Bd4 b5=) 12.Bd3+/– Bg4 13.Nc6 Qc6 14.Be2 Re8 15.0–0 Qe4 16.Re1 Bf3 17.Bf3 (17.gf3?! Qg6 18.Kh1 Ne7+/–) 17...Qe1 18.Qe1 Re1 19.Re1 Ne7 20.d4 c6 21.g3 a6 22.Bc1 Kd7 23.Bf4 g5 24.Bd6 h5 25.Be4 Rg8 26.Be7 Be7 27.Bf5 Kd8 28.Bc8! Kc8 29.Re7 Rd8 30.Rf7 Rd4 31.Rf6 h4 32.Rg6 h3 33.Kf1 Rd1 34.Ke2 Rh1 35.Rg5 Rh2 36.Rh5 Rh1 37.Kf3 (37.Rh7 a5+–) 37...Ra1+/– 38.Rh3 Ra3 39.Kg2 Ra4 40.Rh4 a5 41.ba5 Ra5 42.Rh5 (42.Rc4!? Kd7+–) 42...b5+/– 43.Rh8 Kb7 44.Rh7 Kc8 45.g4 b4 46.g5 Rc5 47.f4 Rc1?? (better is 47...Rc2 48.Kh3 Rc3 49.Kg4 b3+/–) 48.g6+– Rc2 49.Kf3 Rc1 50.g7 Rg1 51.Rh8 Kd7 52.g8Q Rg8 53.Rg8 c5 54.Ke4 Kc6 55.Rd8 c4 (55...b3 56.f5+–) 56.Kd4 (56.Rc8!? Kd6+–) 56...Kc7 57.Rd5 c3 58.f5 Kb6 (58...Kc6+–) 59.f6 c2 60.Rc5 b3 61.f7 b2 (61...c1Q 62.Rc1 Kb7 63.f8Q b2 64.Qb4 Ka7 65.Qb2 Ka6 66.Ra1) 62.f8Q b1Q (62...Ka7 63.Qf7 Ka6 64.Qc7 b1Q 65.Ra5) 63.Qb8 (63.Qd6 Ka7 64.Qc7 Ka6 65.Ra5) 63...Ka6 64.Rc6 Ka5 65.Qa7 1–0. mikebaldini (1665) – sastro (1680), gameknot.com, 2014.

6.c4 Be6 7.cd5 Qd5 8.d4 ed4 9.Nd4 Nd4 10.Bd4+= (< 10.ed4 0–0–0=+).

5.e3 Qe6

6.d4 e4 7.Nfd2 Bd6 8.c4 c6 9.Nc3 f5 10.Qb3 Ne7 11.cd5 cd5 12.Nd5 (better is 12.Nb5+=) 12...Qd5–/+ 13.Bc4 Qc6 14.Rc1 Qd7 15.Bf7 Kf8 16.0–0 Nbc6 17.f3 Nd8 (17...ef3 18.Rf3 b5 19.e4–/+) 18.Bc4 ef3 19.Rf3 b5 20.Bd3 Nf7 21.e4 Bb7 22.Rcf1 Ke8 23.Qd1 Ng5 24.Rf5 Nf5 25.Rf5 Nf7 26.Bb5 Bc6 27.Bc4 Rf8 28.Qe2 Nh6 29.d5 Nf5 30.ef5+= Kd8 31.dc6 Qf5 32.Bd3 Qf4= 33.g3 Qh6 34.Nc4 Re8 35.Qg4 Re7 36.Qf5 Rc8 37.Qa5 Rcc7= 38.Qd5 Re1 39.Kg2 Re6? 40.Bc1!! Qc1 41.Qe6 Bf8 42.Bh7 Qg5 43.Bf5 (43.Bf5 Qf6 44.Qf6 gf6 45.b5+–) 1–0. Smolenskiy,Yuriy Andreyevich – Berzins,Atis, corr, 1983.

6.d4 e4 7.Nfd2 Bd6 8.c4 c6 9.cd5 cd5 10.Nc3 Ne7 11.Nb5 0–0 (11...a6 12.Nd6 Qd6 13.Qh5 g6 14.Qd1+=) 12.Nd6 (better is 12.Qb3!? Nf5 13.Nc3+/– (13.Nd6?! Nd6 14.Rc1 Nd7+=)) 12...Qd6+= 13.b5 (13.Rc1 Bf5+=) 13...f5= 14.g3 f4 (14...a6!?=) 15.ef4 Nf5 16.Qb3 Be6 17.a4 (17.g4 Nh6 18.f5 Bf7+/–) 17...Rc8 18.Bg2 Nd7 19.0–0 Rc7 20.Rac1 Rac8 21.Rc7 Rc7 22.Rd1 Qb6? 23.Nf1 Rc4 24.Ne3 Ne3+= 25.fe3 Qa5 26.Bf1 Ra4 27.Bc3 Ra3 28.Ba5?? Rb3=+ 29.Kf2 Nf6 30.h3 Bd7 31.b6 ab6 32.Bd2 b5 33.g4 b4 34.Rc1 Bc6 35.Be2 Rb2 36.Ke1 Nd7 37.Ra1 Nb6 38.Bc1 Rc2 39.Rb1 Nc4 40.h4? Bb5 41.Bc4–/+ Bc4 42.Kd1 b3 43.Bd2 Kf7 44.h5 h6 45.Ke1?? b2 46.Kd1 Bd3 (46...Bd3 47.g5 b5–+; better is 46...Bb3!? 47.Ke1–+) 0–1. Klarius,G – Vitolins,E, corr ICCF EU/M/GT/197 (year?).

6.d4 e4 7.Nfd2 Bd6 8.c4 c6 9.cd5 Qd5? 10.Nc3 Qf7 11.Bc4 +–.

5.e3 Ne7

6.Nc3 c6 7.d4 e4 8.Nd2 g6 9.Be2 Bh6 10.Na4 (10.0–0 f5=) 10...0–0 (10...f5 11.c4=) 11.0–0 (11.c4 f5=) 11...f5 12.f4 g5 13.g3 Qg6 14.c4 Be6 (14...gf4 15.ef4 Bg7 16.Qb3+=) 15.Nc5 b6 (15...Bc8 16.Bh5 Qf6 17.Qe2=) 16.Bh5 (16.Ne6 Qe6 17.Qc2 Nd7=) 16...Qf6= 17.Ne6 Qe6 18.Qe2 (18.Be2 Nd7=) 18...Nd7 19.fg5 Bg5 20.h4 Bh6 21.Rac1 White plans c5 21...Nf6 22.Rce1 Be3 23.Qe3 Nh5 24.Kh2 Qg6 25.c5 (25.b5 Nf6 26.Qe2 cb5 27.cb5 Rf7–+) 25...f4! 26.gf4 Qf6 27.Qh3 bc5 28.Qg4 (28.bc5 Rab8 29.Bc3 Nf5 (29...Nf4?! 30.Qg3 Neg6 31.h5+=) 30.Qg4 Nhg7–/+) 28...Qg6–+ 29.Rg1 Qg4 (29...Nf4? 30.Qd7 Nd3 A) worse is 31.Qe7 Rf2 32.Kh1 Rd2 (32...Ne1?? 33.Rg6 hg6 34.dc5+–) 33.Rg6 hg6+–; B) 31.h5 Rf2 32.Kh1 Qg1 33.Rg1 Kf8 34.Bc3+–) 30.Rg4 Ng6 31.dc5 Rf4 32.Rf4 Nhf4 (worse is 32...Ngf4 33.Nb3–/+) 33.Ne4 de4 34.Re4 Kf7 (34...a5 35.Bc3–+) 35.Kg3 Nd3 36.Bc3 Re8 37.Kf3 Re4 38.Ke4 Ndf4 39.Be5 Nd5 40.h5 (40.Bg3 Ke6–+) 40...Nge7 41.Kd3 (41.Kf3 Ke6 42.Bb2 Kf5–+) 41...Ke6 42.Bb8 a6 43.Kc4 Ne3 (43...Nf5 44.a4–+) 44.Kd3 (44.Kb3 N7d5–+) 44...N7d5 45.Bg3 (45.a4 Nd1–+) 45...Kf5 (45...Nf5 46.Bf2–+) 46.Bh2 (46.Be1 Kg4–+) 46...Ng4 47.Bg3 Kg5 (47...Ndf6 48.h6–+) 48.Be1 Kh5 49.a4 (49.Ke4 Kg6–+) 49...Ne5 (49...Kg6!? 50.Kd4 Nge3 51.Kd3–+) 50.Ke4 Nf7 (50...Nd7 51.Kf5 a5 52.b5 Nc5 53.Ba5 Ne3 54.Ke5 Na4 55.Kd4 Nf5 56.Ke5–+) 51.Kd4 (51.b5 Ng5 52.Ke5 Nf3 (52...cb5?? 53.Kd5 b4 54.c6+–; 52...ab5 53.ab5 Nf3 54.Kd6 Ne1 55.bc6–+) 53.Kd6 ab5 (53...Ne1?? 54.ba6 Nc2 55.a7+–; worse is 53...cb5 54.Kd5 Ne1 55.c6+–) 54.ab5 Ne1 (worse is 54...cb5 55.Kd5 Ne1 56.c6+–) 55.Kc6 Nb4 56.Kc7 Nf3–+) 51...Ng5 52.Kc4 Nf3 53.Bc3 Nc3 54.Kc3 Ne5 55.Kd4 Nf7 56.b5 (56.Ke4 Kg5–+) 56...ab5 (better is 56...cb5 57.Kc3 Ne5 58.ab5 ab5 59.Kb4–+) 57.a5 Ng5 58.Ke5 (58.a6 Ne6 59.Kc3 Kg4–+) 58...b4 59.Kd4 (59.a6 b3 60.a7 b2–+) 59...b3 60.Kc3 Ne4 61.Kb3 Nc5 62.Kc4 Na6 63.Kd3 Kg4 64.Ke4 Kg3 0–1. COMP – Paige, 1999.

6.c4 c6 7.Nc3 Kf7 +/–.

6.c4 c6 7.c5 Qc7 8.d4 e4 9.Nfd2 Ng6 10.Be2 Be7 11.0–0 0–0 12.Nc3 f5 13.f4 ef3 14.Nf3 ½–½. FortKnox – AlexSh, playchess.de, 2004.

6.c4 c6 7.Be2 g6 8.Nc3 a6 9.0–0 Bg7 10.Na4 Nd7 11.c5 Qc7 12.Qb3 0–0 13.d3 Kh8 14.Nd2 f5 15.e4 (15.f4 e4+=) 15...Nf6 (15...a5 16.ed5 Nd5 17.Nc4=) 16.f3 (16.f4 ef4 17.Nb6 Rb8+=) 16...Be6 17.Qc3 (better is 17.f4!? Nd7 18.fe5 fe4 19.Ne4 Ne5 20.Nb6+=) 17...Nd7 18.Kh1 Bg8 19.Bd1 Rae8 20.Bb3 f4 21.g3 h5 22.gf4 Rf4 23.Rf2 Ref8 24.Rg1 Bf6 25.Rgf1 (25.Qc2 d4=) 25...Kh7 26.Bd1 Be6 27.Rg1 Bh4 28.Rff1? (better is 28.Rfg2!?–/+) 28...Bh3 29.Nb6 d4 30.Qc4 Nb6 31.cb6 Qd7 32.Qc5 Bf1 33.Rf1 Qh3 34.Rg1 Qe6 35.Bb3 Qf6 36.Bd1 g5 37.h3 Ng6 38.Kg2 g4! 39.hg4 hg4 40.Bd4 gf3 41.Kf1 ed4 42.Qh5 Kg7 43.Nc4 Qe6 44.Qe5 Qf6 45.Bb3?? f2–+ 46.Rg2 Kh6 47.Qc5 Qe6 48.Rh2 Qg4 49.Rh1 Qf3 50.Rh4 Rh4 (50...Rh4 51.Qh5 Kh5 52.e5 Rh1#) 0–1. Villarreal,Julio (1935) – Augoustis Funti,Alexis (1945), Paysandu URU, Interclubes Ch, 2012.

6.c4 c6 7.h3 Ng6 (7...Bf5 8.c5 Qe6 9.Be2+=) 8.Nc3+/– Be6 9.d3 (9.Rc1!? a6 10.cd5 cd5 11.Qa4 Qd7 12.Be2+=) 9...Be7 10.Qc2 (10.h4 h5+=) 10...0–0= 11.g4 (11.h4!?=) 11...Re8 (11...a5 12.c5 Qc7 13.Be2–/+) 12.Rc1 d4 (12...a5!? 13.b5 dc4=+) 13.Ne4= Qd7 14.ed4 ed4 15.Nd4 (< 15.Bd4 a5 16.Bc3 ab4 17.ab4 Na6=+) 15...f5 (15...a5 16.b5=) 16.gf5 Bf5 17.Nf5 Qf5 18.Be2 Nh4? (18...a5!? 19.b5 Qf4+/–) 19.Bg4 (19.Rg1 Ng6+–) 19...Qf7 (19...Qg6 20.Qe2 Qf7+/–) 20.Qe2 (20.Rg1 Bg5 21.Kf1 Bc1 22.Qc1 Re7 23.Nf6 Kh8+– (23...gf6?? 24.Be6 Ng6 25.Bf7 Kf7 26.f4+–)) 20...Bg5 21.Rb1 Ng2? 22.Kd1+– Bh6?? 23.Kc2 Nf4+/– 24.Qf1 Rd8 25.Rd1 Nd3?? 26.Rd3+– Qc4 27.Nc3 Rf8 28.Rd8! Qf4 29.Be6 Kh8 30.Rf8 Qf8 31.f4! Qf4 32.Qf4 Bf4 33.Rf1 Bd6 34.Ne4 Be7 35.Rf7 Bb4 36.ab4 Na6 37.Bg7 Kg8 38.Nf6# (38.Rb7#) 1–0. David,D2 (1725) – Chivulescu,Adrian_Alexandru, Sarata Monteoru ROM, Men Ch, 2012.

6.c4 Be6 7.d4 e4 8.Nfd2 +=.

6.Be2 Bg4 7.d4 e4 8.Nfd2 Be2 9.Qe2 Nd7 10.c4 c6 11.Nc3 f5 12.g3 (12.0–0 Qe6=) 12...Nf6 13.h4 (13.0–0 Qe6=) 13...h5 14.cd5 Ned5 15.Nc4 Qe6 16.Rc1 Nc3 17.Bc3 Bd6 18.d5 cd5 19.Nd6 Qd6 20.Bf6 gf6 (worse is 20...Qf6 21.Qb5 Kf8 22.Qb7+/–) 21.0–0 Kf7 22.Rfd1 Rad8 23.Rc5 Rd7 24.Kg2 Kg6 25.Qb5 Rhd8 26.Rcd5 Qd5 27.Rd5 Rd5 28.Qb7 R8d7 29.Qb8 Rd1 30.Qg8 Kh6 31.Qh8 Kg6 32.Qg8 Kh6 33.Qe6 Kg6 34.Qg8 (34.b5 R1d6 35.Qg8 Kh6+/–) 34...Kh6 35.Qe6 Kg6 36.Qg8 (36.Qe8 Kh6+=) 36...Kh6 37.Qe6 Kg6= ½–½. Melich,Jindrich (2080) – Blecha,Milan (2165), CZE–chT2a, 2007.

6.Be2 Ng6 7.0–0 Be7 8.c4 0–0 9.Qc2 Be6 10.c5 Qd7 11.d4 Nc6 (11...e4!? 12.Nfd2 f5=) 12.b5+/– Na5 13.a4 (13.de5!? fe5 14.Ne5 Ne5 15.Be5=) 13...e4+= 14.Nfd2 f5 15.Bc3 Nc4 (15...b6 16.Ba5 ba5 17.Nc3+=) 16.Nc4+/– dc4 17.Bb4 Bd5 18.Bc4 Qe6 19.Bd5 Qd5 20.Qa2 Qa2 21.Ra2 b6 22.Rd1 Rad8 23.Rad2 Rd5 24.Nc3 Rdd8 25.Ba3 Rd7 26.c6 Ba3 (26...Rdd8 27.Be7 Ne7+–) 27.cd7 Rd8 28.Ra2 Bb4 29.Nd5 Bd6 30.Rc2 Rd7 31.Rdc1 Bh2?? (31...Ba3 32.Ra1 Bd6+–) 32.Kh2 Rd5 33.Rc7 h5 (33...Nf8 34.Ra7 h6 35.Rc6+–) 34.Ra7 Kh7 (34...f4 35.Rcc7 Kh8 36.Rg7 fe3 37.Rg6 ef2 38.Rb6+–) 35.Rcc7 f4 36.Rg7 Kh6 37.Rgb7 fe3 38.fe3 h4 39.Rb6 h3 40.Raa6 hg2 41.Rg6 Kh7 42.Kg2 Rf5 43.Rgf6 Rg5 44.Kf2 Rh5 45.Ra7 Kg8 46.Rc6 Rf5 47.Ke2 Rf8 48.b6 Rb8 49.b7 Kf7 50.Rc8 Rb7 51.Rb7 Ke6 52.Rc5 Kd6 53.Rb6 Kd7 54.Rh6 Ke7 55.Ra5 Kd7 56.Ra7 Kc8 57.Rh8 1–0. Toll,Anatoly – Zhotev,Jasen (2085), Dos Hermanas Internet qual–E, 2009.

5.e3 Bf5

6.c4 Nc6 7.c5 Qe6 8.Be2 Nge7 9.0–0 Ng6 10.d3 Be7 11.Nbd2 0–0 (11...0–0–0 12.b5 Nb8 13.Rc1+=) 12.Nb3 (12.b5!? Nd8 13.e4+/–) 12...Rfd8 13.d4 e4 (13...a6 14.Ne1 Qd7 15.Qd2=) 14.Nfd2+= Qf7 15.Bc3 a6 16.a4 b6 17.b5 ab5 18.ab5 Ra1 19.Qa1 Nb8 20.c6 (20.Qa7 Rc8+=) 20...Nh4 21.g3 Qg6 22.Kh1 Bh3 23.Rg1 Nf5 24.Bf1 (24.Qa4 Bg4 25.Bg4 Qg4+=) 24...Qh5 (24...Bg4 25.Qa7 Bd6 26.Qa4+=) 25.Bh3= Qh3 26.Qf1 Qg4 27.Nc1 Bf8 28.Qe2 Qe2 29.Ne2 Nd6 30.Rb1 Nb5 (better is 30...Kf7!?=) 31.Rb5+/– Nc6 (31...g5 32.g4+/–) 32.Nf4+– Nb8 (32...Ne7 33.Bb4 Ng6 34.Bf8 (34.Nd5?! c5+/–) 34...Nf4 35.Be7+– (35.ef4?! Kf8 36.Kg1 g6+=; 35.gf4?! Kf8 36.Kg2 Ke7+/–)) 33.Rd5 Rd5 34.Nd5 Na6 35.Ne4 b5 36.Nc5! Nc5 37.dc5 Bc5 38.Nc7 b4 39.Na6 Be3 40.Bb4 Bf2 41.Kg2 Bd4 42.Kf3 Kf7 43.Nc7 h5 44.h3 g5 45.g4 hg4 46.hg4 Kg6 47.Nd5 Kf7 48.Ke4 Be5 49.Kf5 Bd4 50.Bc3 (50.Bc3 Be5 51.Be5 fe5 52.Kg5+–) 1–0. Hal1958 – Daddy_4_eyes, playchess.de, 2005.

6.d4 e4 7.Nfd2 Nh6 8.c4 c6 9.Nc3 Be6 10.Rc1 a6 11.cd5 cd5 12.Qa4 Bd7 (12...Nc6 13.b5 Nb8 14.ba6 Kf7 15.Nb5+–) 13.Qb3 (better is 13.Qa5!? Bc6 14.b5+–) 13...Be6+= 14.Qa4 (better is 14.Ne2+=) 14...Bd7+– 15.Qa5 b5? (better is 15...Bc6 16.b5 Bd7+–) 16.Nb5! Bb5 17.Bb5 Kf7 18.Ba4 Be7 19.Bb3 (19.Bb3 Rd8 20.Ne4+–) 1–0. Gerold,G – Zonev,A, corr ICCF EU/M/Gr18 (year?).

5.e3 Bg4

6.c4 c6 7.Nc3 Ne7 8.Be2 dc4 9.Bc4 Nd5 10.Qb3 Be6 11.d4 Nd7 12.de5 fe5 13.Rd1 N7f6? (better is 13...N7b6 14.Nd5 Nc4+/–) 14.e4+– (14.e4 Rc8 15.ed5 (15.Bd5?! cd5 16.Nd5 Ne4+–) 15...cd5 16.Nd5 Rc4 17.Qc4 Bd5 18.Qc8 (18.Be5?! Bc4 19.Bd6 Bd6 20.Rd6 0–0+–) 18...Qd8 19.Qd8 Kd8 20.Be5+–) 1–0. Van Daatselaar,Jan Bart (2185) – Van Leent,Dimitri (2200), Netherlands email ch KE05, 2002.

6.d3 Nd7 7.Nbd2 Nb6 8.Rc1 (8.c4 dc4 9.d4 Qe6=) 8...Ne7 (8...Na4 9.Ba1 a5 10.h3=) 9.c4 Qe6 (9...dc4 10.d4 ed4 11.Bd4=) 10.c5 Nd7 11.Qc2 (11.Be2 Bf5+=) 11...c6 12.h3 Bf3 13.Nf3 Ng6 14.Be2 Be7 15.0–0 0–0 16.Nh2 Rae8 (16...f5 17.Bh5=) 17.Rce1 (17.e4 Rd8+=) 17...f5 18.e4 d4?? (better is 18...Nf6=) 19.ef5+– Rf5 (19...Qf5?? 20.Bg4 Qf7 21.Bd7+–) 20.Bg4 Ref8 21.Bd4!! Qf6 22.Bf5 Qf5 23.Be3 Nf6 24.g4 Qd7 25.f4 ef4 26.Bf4 Nd5 27.Bg3 Rf1 28.Nf1 Ngf4 29.Bf4 Nf4 30.Qc4 Nd5 31.Qe4 Kh8 32.Ng3 h6 33.Nf5 Bf6 34.Nd6 b6 35.Qg6 Ne7 36.Qe4 bc5?? 37.bc5+– Kg8 38.Rb1 Qd8 39.Rb7 a5 40.Kg2 Qf8 41.d4 Qd8 42.Kg3 Qf8 43.h4 g5 44.h5 Kh8 45.Rc7 Kg8 46.Qe6 Kh8 47.Nf7 Kg7 48.Ne5 Kh8 49.Re7! (49.Re7 Be7 50.Nf7 Kg8 51.Nh6 Kh8 52.Nf7 Kg8 53.Ng5 Kh8 54.Nf7 Kg8 55.Ne5 Kh7 56.Qg6 Kh8 57.Nf7 Qf7 58.Qf7 Bg5 59.Qf8 Kh7 60.Qf5 Kg7 61.Qg5 Kf7 62.Qg6 Ke7 63.h6 Kd7 64.Qf7 Kd8 65.h7 a4 66.h8Q#) 1–0. Schwarz,B – Jenke,Alfons, OWL–ch Altenbeken, 1948.

6.Be2 e4 7.Nd4 Be2 8.Qe2 c6 9.c4 Nd7 10.cd5 Qe5?? (better is 10...Ne5 11.0–0 Nd3 12.dc6 Nb2 13.cb7 Rb8+/–) 11.dc6+– bc6 12.Nc3 c5 13.bc5 Nc5 14.Qb5 Kf7 15.Nc6 Qg5 (better is 15...Qd6!? 16.0–0 Qd3+/–) 16.0–0+– Nh6? (better is 16...Kg6+–) 17.Qc4 Kg6 18.Ne4 Ne4 19.Qe4 Qf5 (19...Kh5 20.Ne5 Ba3 21.Qf3 (< 21.Ra3 fe5 22.Be5 Qf5 23.Qf5 Nf5+–; 21.Ba3?! Qe5 22.Qb7 Kg6+–) 21...Ng4 22.Nf7 Bb2 23.Ng5 Kg5 24.Qf4 Kh5 25.Qf5 Kh6 26.Ra4+–)20.Qf5 Kf5 21.d4 Ke4 22.Rfe1 Nf5 23.Nb4 Nd6 24.f3 Kf5 25.e4 Kg6 26.Rac1 Nb5 27.d5 a5 28.Nc6 Na3 29.Ba3 Ba3 30.Ra1 Bb4 31.Nb4 ab4 32.Ra8 Ra8 33.Rb1 Rb8 34.Rb3 Kf7 35.Kf2 Ke7 36.Ke3 Kd6 37.Kd4 Rb5 38.Kc4 Rc5 39.Kb4 Rc2 40.g4 Rh2 41.Kc4 Ke5 42.Rd3 g5?? 43.d6 Rc2 44.Kb5 Rc8 45.Kb6 Ke6 46.d7 Rd8 47.Kc7 Ke7 48.Rd5 h6 49.Rd3 1–0. Fournier,Frederic (1835) – paisano, Active, 2011.

6.Be2 Be7 7.0–0 Nh6 8.h3 Be6 9.d3 Nd7 10.c4 c6 11.cd5 cd5 12.Nc3 a6 13.b5 0–0 14.a4 Qc7 15.Rc1 Qd8 16.Qb3 Nc5 17.Qc2 ab5 18.ab5 b6 (18...d4 19.ed4 ed4 20.Nb1+=) 19.Ra1 (19.d4 Nd7 20.Qb3 Kh8+/–) 19...Qd7 (19...Rc8 20.d4 Ne4 21.Qb3 Nc3 22.Bc3=) 20.Kh2 (20.d4 Bf5 21.Qd1 Ra1 22.Ba1 Ne4 23.de5 Nc3 24.Bc3 Be4+/–) 20...Nf5 (20...d4 21.ed4 ed4 22.Ne4+=) 21.d4= ed4 22.Nd4 (22.ed4 Nb7+=) 22...Nd4+= 23.ed4 Bd6 (23...Bf5 24.Qd1 Ra1 25.Ba1=) 24.f4 (24.Kg1 Ra1 25.Ra1 Nb7+=) 24...Nb7 25.Kg1 (25.Bd3 f5=) 25...Ra1 26.Ra1 (26.Ba1 Re8=) 26...Bf4–/+ 27.Bf3? (better is 27.Qd3!?–/+) 27...Be3–+ 28.Kh1 Bd4 29.Ra7 Bc3 (better is 29...Be5!?–+) 30.Qc3–/+ Rc8 (30...Rb8 31.Ba3–/+) 31.Qd4 (31.Qe3 Rb8=) 31...Rc5+= 32.Ra8 Nd8 33.Ba3 Rb5 34.Qd3? (better is 34.Bb4–/+) 34...Ra5–+ 35.Ra5 ba5 36.Be2 Nf7 (36...Bf5 37.Qa6 Be4 38.Kg1–+) 37.Qa6 Bh3! 38.Bb5 Qc8 39.Qa5 Bf5 40.Ba6 Qd8 41.Qc5 Be4 42.Bb5 f5 43.Bd7 h6 44.Be6 f4 45.Bb2 Qh4 46.Bh3 Qh3 (46...Qh3 47.Kg1 Qg2) 0–1. mr5reasons1 (1805) – johannes66 (1815), gameknot.com, 2013.

6.Be2 Be7 7.Nc3 Nd7 =.

6.Be2 Be7 7.c4 dc4=+ 8.Qc2 Nd7 (8...b5 9.Qe4 Bf3 10.Bf3=) 9.Bc4 (9.Qe4 Bf3 10.Bf3 c6 11.Qc4 Nb6+=) 9...Nh6 (9...Nb6 10.Bg8 Rg8 11.Qe4 Bf3 12.Qf3=+) 10.Nc3 c6 (10...a5 11.Ne4 Qb6 12.b5=) 11.d4 Bf3 12.gf3 ed4 (12...a5 13.ba5 Qc7 14.Rd1+=) 13.Ne4 Qc7 14.Bd4 Ne5 (14...a5 15.b5+=) 15.Be2 Nf5 (15...f5 16.f4 Ng6 17.Bg7 Bb4 18.ab4 Qg7 19.Nd6 Kd8 20.Rd1+/–) 16.Nf6+/– Bf6 17.Qf5 0–0 18.Qh3 (18.f4 Ng6 19.Rd1 Bd4 20.Qe6 Kh8 21.Rd4 Rad8 22.Rd8 Rd8+=) 18...Nf3 (18...a5 19.f4 Ng6 20.Bc4 Kh8 21.Bf6 Rf6 22.Rd1+=) 19.Bf3+/– (19.Qf3 Bd4 20.Bc4 Kh8–+) 19...Bd4 20.0–0–0 (20.ed4!? Qf7 21.Be2 Qf2 22.Kd1 Qd4 23.Kc2+=) 20...Bf6 21.Be4 h6 22.Rhg1 (22.Qe6 Kh8 23.Rd7=) 22...Rad8 (22...Qe5!? 23.Rd4 Bg5=+) 23.Qe6 (23.Rd8 Bd8 24.Qh6 Bf6 25.Qh7 Kf7 26.Qh5 Ke7 27.Qc5 Qd6+/–) 23...Qf7 (23...Kh8 24.Rd8 Rd8 25.Qf5 Bb2 26.Kb2+–) 24.Qf7 Kf7 25.Kc2 (25.Bg6 Ke7+=) 25...Ke7 26.Rd8 Rd8 27.Rd1 Rd1 28.Kd1 Kd6 (28...g5 29.f4=) 29.Kc2 b5 (29...g5 30.f4=) 30.Bd3 (30.f4 c5+=) 30...g5= 31.h3 (31.f4 gf4 32.ef4 a6=) 31...Ke5 (31...Be5 32.Kd2=) 32.Kb3 Bd8 33.a4 (33.Bg6 a5=) 33...ba4 34.Ka4 Bb6 35.Bg6 Kd5 36.Kb3 c5 (36...a5 37.ba5 Ba5 38.f4=) 37.bc5 (37.b5 Bc7=) 37...Bc5 38.f4 Be3=+ ½–½. Maeurer,Christoph (2310) – Sofronie,Iulian (2455), Cappelle op, 2002.

6.Be2 Bf3 7.Bf3 (worse is 7.gf3 Ne7+=) 7...c6 8.d4 Nd7 9.c4 e4 10.Be2 f5 11.cd5 cd5 12.Nc3 a6 13.Na4 b6 14.b5 a5 15.Rc1 Ngf6 (better is 15...Ne7!?+/–) 16.Rc6+– Qe7 17.Nb6 Nb6 18.Rb6 Qd7 19.0–0 Be7 20.Qc2 0–0 21.Rc1 Rfb8 22.Rc6 Ne8 23.a4 Bd6 24.Qb3 Nf6 25.b6 Bb4 (25...Rb7 26.Bb5 Qd8+–) 26.Rc7 Qd6 27.R1c6 Qf8 (27...Qd8 28.b7 Ra7 29.Qc2 Rab7 30.Rb7 Rb7 31.Rc8+–) 28.b7 Ra7 (28...Rb7 29.Rb7 Rd8 30.Bc3+–) 29.Rf6! gf6 (29...Qf6 30.Rc8 Decoy; 29...gf6 30.Qd5 Double attack) 30.Qd5 Kh8 31.Qf5 Rab7 (31...Be7 32.Qe4 Rab7 33.Rb7 Rb7 34.Qb7 Bd8+–) 32.Qh7 1–0. b4_player – verte, casual, 2013.

6.h3 Be6 =.

6.h3 Bf5 =.

6.h3 Bh5 7.c4 Ne7 8.Nc3 c6 9.Rc1 Nd7 10.cd5 Nd5 (10...cd5? 11.Nb5 Qb8 12.Nc7 Kd8 13.Ng5 fg5 14.Qh5 Qc7 15.Rc7 Kc7 16.Qg5+–) 11.Ne4 Qe6 (11...Qe7 12.Be2=) 12.Ng3 (12.Nfg5 Bd1 13.Ne6 Bb3+/–) 12...Bf7 13.Bc4 N7b6 14.Bb3 Qd7 15.d4 ed4 16.Nd4 Bd6 17.Ngf5 Bf8 18.0–0 g6 19.e4 (19.Ng3 Rd8+/–) 19...Nc7 (19...Nb4!? 20.Ne3 Na6=) 20.Ne3+/– Bg7 21.b5 c5? (21...cb5 22.Ndf5 Combination; 21...Nb5 22.Nb5 Combination) 22.Rc5+– 0–0 23.a4 Rad8 24.a5 (24.Qc2 Nba8+–) 24...Nc8 (24...Nba8 25.Qc2+–) 25.Qc2 Ne6 26.Ne6 Be6 27.Rc7 Qe8 28.Rb7 Nd6 29.Ra7 Nb5 30.Ra6 Bb3 31.Qb3 Kh8 32.Nd5 (32.Qe6!? Nd4 33.Qe8 Rfe8+–) 32...Qe4 33.Qb5 Qd5 34.Qd5 Rd5 35.Ra1 Rd2 36.Bc3 Rd3 37.Rc6 Rc3 38.Rc3 f5 39.Rca3 Ba1 40.Ra1 Kg7 41.a6 Kf6 42.a7 Ra8 43.Kf1 Ke5 44.Ke2 g5 45.Ra5 Ke4 46.f3 Kd4 47.Rf5 Ra7 48.Rg5 Ra2 49.Kf1 Ke3 50.Kg1 1–0. Franic,Milan (2375) – Gazarek,Danko (2345), CRO–chT2 Tucepi, 1996. (=1.Nf3 d5 2.b4 Qd6 3.a3 e5 4.Bb2 f6 5.e3 Bg4)

6.Be2 Nd7

7.0–0 0–0–0 8.d3 Nh6 9.Nbd2 Nb6 10.c4 dc4 11.dc4 Qd7 12.Qc2 Qa4 13.Qc3 Qe8 14.Rfe1 e4 15.Nd4 c5 16.Bg4 Ng4 17.N4b3 (17.bc5!? Na4 18.Qa5 Nb2 19.c6 bc6 20.Qa6 Kc7 21.Qa7 Kd6 22.Qb6+–) 17...Na4+= 18.Qc2 Nb2 (worse is 18...cb4 19.Bd4 ba3 20.c5+/–) 19.Qb2 Bd6 20.bc5 (20.Nc5? Bh2 21.Kf1 Be5–+) 20...Bh2 21.Kf1 Be5 22.Nd4 Qh5 23.Ne4 Qh1 24.Ke2 Qg2 25.Qc2?? (25.Qb1 Ne3! 26.Nb5+=) 25...Ne3! 26.Ke3 (26.Qd3 Rd4 27.Nd6 Bd6 28.Qd4–+) 26...Bd4 27.Ke2 Rhe8 (27...Rhe8 28.Kd1 Re4 29.Qe4 Be3 30.Qd5 Rd5 31.cd5 Qf3 32.Re2 Qd5 33.Kc2 Qc5 34.Kb1 Qc1 35.Ka2 Qc4 36.Kb1 Qe2 37.fe3 Qe3–+) 0–1. Besnus,Emmanuel (1840) – Levacic,Damir (2235), Saint Denis REU, Reunion Open, 2013.

7.0–0 0–0–0 8.h3 Bf5 9.d4 =.

7.0–0 c5 8.bc5 Nc5 9.d4 Bf3 10.dc5 (10.Bb5 Nd7 11.Qf3 e4 12.Qh5 g6=) 10...Be2= 11.cd6 Bd1 12.Rd1 Bd6 13.Rd5 Rd8 14.Nc3 Ne7 15.Rdd1 0–0 16.Nb5 Bb8 17.Kf1 a6 18.Nc3 Bc7 19.e4 Ba5 20.Nd5 Nd5 21.Rd5 (21.ed5 Rc8 22.Rac1 b5=) 21...Rd5 22.ed5 Rd8 (22...Rc8 23.c3+=) 23.c4= Bb6 24.f3 Bc5 25.Rd1 Kf7 26.Ke2 b5 27.cb5 ab5 28.g3 Bd6 29.h3 Ra8 30.Ra1 b4 (30...Ke7 31.Rb1=) 31.ab4 Ra1 32.Ba1 Bb4 33.Kd3 Ke7 34.Kc4 Be1 35.g4 g6 36.Bb2 (36.g5 fg5 37.Be5 Bf2+/–) 36...Bg3= 37.Kc5 Kd7 38.Bc1 f5 39.Bb2 fg4 40.hg4? (better is 40.fg4 Bf4 41.Kc4=) 40...h5–+ 41.gh5 gh5 42.Kc4 (42.f4 h4 43.fe5–+) 42...h4 43.Kd3 h3 (43...h3 44.Ke4 h2 45.Be5 Be5 46.Ke5 h1Q–+) 0–1. Hal1958 – Daddy_4_eyes, playchess.de, 2005.

7.0–0 f5 8.Nc3 c6 9.h3 Bh5 10.Nh4 Be2 11.Ne2 (11.Qe2 Ne7=) 11...Qe6 (11...Qf6 12.Nf3=) 12.f4+= g6 (12...Be7 13.Nf3 e4 14.Bg7 ef3 15.Rf3+/–) 13.fe5 Ne5 14.Nf4 Qd6 15.Be5 (15…Qe5 16.Nhg6 hg6 17.Ng6+/–) 1–0. Woschkat,Karl_Heinz – Szilagyi,Sandor, CiF, 1995.

7.Nc3 0–0–0 8.0–0 (8.0–0 Ne7 9.Re1=). Vasquez,Fernando – Patel,Reshma (1700), FICGS, 2006.

7.c4 dc4=+ 8.Nc3 (8.Bc4 e4 9.h3=+) 8...Ne7 (8...Nb6!?=+) 9.Bc4= e4? (better is 9...Nb6 10.Be2 a5=) 10.Ne4+– Qc6 11.d3 0–0–0 (11...Nb6 12.Rc1 Kd8 13.Bf7+–) 12.b5 (12.Rc1 Nb6+–) 12...Qb6 13.Bd4 Qa5 14.Bc3 Qb6 15.a4 f5 16.Neg5 Bh5 (16...Nc5 17.Nf7 Nd5 18.Bd2+– (18.Nh8?! Nc3 19.Qc2 Bf3 20.gf3 Qf6+–)) 17.Ne6 f4 (17...Qd6 18.Nd8 Kd8 19.a5+–) 18.a5 (18.Nf8?! Rhf8 19.a5 Qh6+–) 18...Qd6 19.Nf4 (19.a6 b6 20.Nd8 Kd8+–) 19...Bf3 (19...Bg4 20.Rc1+–) 20.Qf3 (20.gf3?! Ne5+–) 20...Ne5 21.Qe4 Nc4 22.Qc4 Ng6 23.Qe6 Qe6 24.Ne6 Rd3 25.Nf8 Rc3 26.Ng6 hg6 27.b6 (27…ab6 28.ab6+–) 1–0. Algra,Klaus – Thyes,Romuald, corr FRA–NED team m, 1996.

7.c4 Bf3 8.Bf3+= e4 9.Be2 dc4 10.Bc4 0–0–0 11.d4 ed3 12.Qd3 Nb6 13.Bd4 Ne7 14.Nd2 Qc6 (14...Nc4 15.Qc4 Qc6 16.Rc1= (worse is 16.Ba7 b6+=)) 15.0–0 Ng6 (15...Nc4 16.Nc4 (16.Qc4?! Qc4 17.Nc4 Nc6=) 16...Qe6 17.Rac1+/–) 16.Qf5 Kb8 17.b5 (17.Bd3 Qd7+/–) 17...Qd6?? (better is 17...Qg2! 18.Kg2 Nh4 19.Kh3 Nf5 20.Bb6 ab6+=) 18.Ne4+/– Qe7 19.Rfc1 Rd4? (better is 19...Nc4 20.Rc4 Qd7 21.Qd7 Rd7+=) 20.ed4+– Nh4 21.Qe6 Nc4 22.Qe7 (22.Qc4 Ng2 23.d5 Nf4+–) 22...Be7 23.Rc4 Nf5 24.g4 Nd6 25.Nd6 Bd6 26.Re1 Ba3 (26...h5 27.gh5 b6 28.Re3+–) 27.Ra1 Bd6 28.Rca4 b6?? (28...Re8 29.Ra7 Re1 30.Kg2 Ra1 31.Ra1 c6+–) 29.Ra7 (29.Ra7 Kc8 30.Ra8 Kd7 31.Rh8+–) 1–0. TuGGy – Daddy_4_eyes, playchess.de, 2005.

7.d4 e4 8.Nfd2 Be2 9.Qe2 f5 10.c4 c6 11.Nc3 Ngf6 12.cd5 cd5 13.Rc1 a6 14.f4 Be7 15.b5 0–0 16.a4 Rfc8 17.0–0 Nb6 18.Ra1 Qe6 19.a5 Nc4 20.Nc4 Rc4 21.ba6 ba6 22.Na4 Rac8 23.Nc5 (better is 23.Nb6!? Rc2 24.Qa6=) 23...Bc5–/+ 24.dc5 R4c5 25.Bd4 Rc2 26.Qe1 Qc6 27.h3 Nd7 28.Kh1 Qg6 29.Rf2 R2c4 30.Qd1 Nc5 31.Bc5 R8c5 32.Rd2 Qc6 33.Qe2 h6 34.Kh2 Qc7 35.Qh5 d4 (35...Ra5?! 36.Ra5 Qa5 37.Rb2=) 36.ed4?? (better is 36.Qg6–/+) 36...Qf4–+ 37.Kh1 Qd2 38.Qe8 (38.dc5 Rc5 39.h4–+) 38...Kh7 39.dc5 Rc1 40.Rc1 Qc1 41.Kh2 Qc5 (41...Qc5 42.h4 Qa5–+) 0–1. Koerner,He (1860) – Roth,Jos (2100), Lichtenberger Sommer, 2015.

7.d4 e4 8.Nfd2 Be2 9.Qe2 f5 10.c4 Ngf6 11.Nc3 c6 (11...a5 12.cd5 ab4 13.Nb5+–) 12.Rc1 (12.0–0 Ng4 13.f4 Be7=) 12...Nb6?? (better is 12...Be7=) 13.c5+– (13...Qe6 14.cb6 ab6 15.Qd1+–) 1–0. Tilp,Andreas – Gremin,W, corr DDR, 1988.

7.h3 Be6 8.0–0 =.

7.h3 Bh5 8.g4 Bf7 9.d3 g5 (9...h5 10.gh5 Bh5 11.Nbd2=+) 10.Nbd2 h5 11.gh5 Bh5 12.Nb3 (12.c4 a5=) 12...Nh6 (12...0–0–0 13.Rc1–/+) 13.Qd2 (better is 13.c4=+) 13...Qe6?? (better is 13...0–0–0–/+) 14.Ng5!+/– fg5 15.Bh5 Nf7 16.Bg4 Qc6 17.0–0–0 0–0–0 18.f4 gf4+= 19.ef4 Bh6 20.Rhf1 Kb8 21.Kb1 Rhf8 22.Na5 Qa6 23.Qg2 Bf4 24.Qd5 Nf6 25.Qg2 c5?? 26.Bf3 Nd6+/– 27.Nb3 cb4+= 28.ab4 Qb5 29.c3 Nf5=+ 30.Nc5 Rg8 31.Qh1 Ng3= 32.Qg2 Nf1 33.Qf1 Be3 34.Nb7+/– Rg1 35.Qe2?? Rd1 36.Qd1 Qd3 37.Qd3 Rd3 38.Na5 Bf4 39.Nc6? Kc7 40.Be2 Rd2 41.Bb5 a6! 42.Ba4 Nd5 43.Na5 Rh2 44.Bb3 Ne3 45.Be6 Nd1 46.Nc4 e4 47.Bg4 Nf2 48.Na3 Ng4 49.hg4 e3 50.c4 e2 51.Nc2 Rh1 52.Ka2 e1Q 53.Ne1 Re1 54.Bc3 Re2 55.Kb3 Be5 (55...Be5 56.Be5 Re5–+) 0–1. Woronowicz,Zbigniew – Mierzynski,Jaroslaw, corr Poland, 1987.

7.d4 Bf3

8.gf3 Ne7 9.de5 Ne5 10.Nd2 g6 11.c4 dc4 (11...0–0–0 12.f4 Nd7 13.Nf3=) 12.Nc4+= Nc4 13.Bc4 Qd1 14.Rd1 Bg7 15.Be6 Rd8 16.Ke2 Nc8 17.Rc1 c6 18.Bd4 Nd6 19.a4 Ke7 20.Bb3 1–0. Fajfr – Voboril,P, Czechoslovakia, 1972.

8.Bf3 c6 9.Nd2 Nb6 (9...a5 10.c4+=) 10.de5 (10.c4 Nc4 11.Nc4 dc4+=) 10...fe5 11.c3 (11.c4 Nc4 12.Nc4 dc4+=) 11...Nf6= 12.Bh5 (12.c4!? Nc4 13.Nc4 dc4 14.Qc2=) 12...Nh5=+ 13.Qh5 g6 14.Qd1 (14.Qg4 h5 15.Qh3 Bg7=+) 14...Bg7 15.Rb1 (15.c4 dc4 16.Rc1 Rd8=+) 15...0–0 (15...Rd8 16.e4=+) 16.0–0 (16.c4 dc4 17.Qc2 Rad8–/+) 16...a5 (16...Qe6 17.a4–/+) 17.Ne4 (17.Bc1 a4=+) 17...Qe7–/+ 18.Nd2 e4 (18...ab4 19.cb4 Na4 20.Ba1=+) 19.Qc2=+ ab4 20.ab4 Opening the a–file gets Black a lot of play (20.cb4 Bb2 21.Qb2 Nd7=+) 20...Na4–/+ 21.Qb3 (21.Ba1 b5–/+) 21...Nb2 22.Rb2 Ra7 23.h3 Rfa8 24.Nb1 b5 25.f3 ef3 26.Rf3 Ra1 27.Qc2 R8a3 28.Kh2–/+ Qe5 29.g3 Ra8 30.Kg2 R1a7 31.Qd3–/+ Re7 32.Rd2 Ra1 33.g4 Qe4 (34.Qe4 Re4–/+; 33...Qe6 34.Re2–/+) 0–1. Weber,Krzysztof(+) – Wisniewski,Janusz, corr 2. AMM Poland, 1993.

8.Bf3 e4 9.Be2 +=.

6.Be2 Ne7

7.0–0 Nd7 8.d4 Ng6 (8...0–0–0 9.de5 fe5 10.Nbd2=) 9.Nfd2 (9.c4 e4 10.Nfd2 Be2 11.Qe2 Ne7+=) 9...Be6 (9...Be2 10.Qe2 a5 11.b5=) 10.c4+= c6 11.Nc3 a6 (11...Be7 12.cd5 cd5 13.e4+=) 12.b5 (12.de5!? fe5 13.cd5 cd5 14.Rc1+=) 12...ab5= 13.cb5 Be7 14.a4 Qc7 (14...0–0 15.Ba3 Qc7 16.Be7 Ne7 17.Nb3=) 15.Rc1 (15.bc6 bc6 16.Nb3 0–0=) 15...0–0 16.Nb3 Rfc8 17.a5 cb5 (better is 17...Bb4!?=) 18.Nd5!+/– (18.Bb5?! Qd6=) 18...Qd6 (18...Bd5 19.Rc7) 19.Rc8 Rc8 20.Ne7 Qe7 (20...Ne7 21.de5 Qd1 22.Rd1 Ne5 23.Nd4=) 21.Bb5 Qb4 22.Bd7 Bd7 23.Nc5?? Bb5+= 24.Re1?? Qb2–/+ 25.Qg4 Re8–+ 26.Qe4 Bc6 27.d5 Qc3 28.Nd3 Bb5 (29.d6 Bd3 30.Qd5 Kh8–+) 0–1. Mielke,Sven – Mentel,Juergen, Ryck–Open Greifswald, 1997.

7.d4 e4 8.Nfd2 Be2 9.Qe2 Nd7 10.c4 c6 11.0–0 a6 12.Nc3 Qe6 13.cd5 cd5 14.f3 f5 15.Rac1 g6 16.b5 Bh6 17.Nd1 Rc8 18.Rc8 Nc8 19.Bc3 ab5 20.fe4 fe4 21.Qb5 Qc6 22.Qe2 Nd6 23.Bb4 Nf5 24.g4 Nd6 25.Qe1 Bg5 26.Qe2 Qb5 27.Qb5 Nb5 28.a4 Nc7 29.Nb1 Nf6 30.Bd6 Na8 31.Nbc3+= Rf8?? 32.Bf8+– (32.Bf8 Kf8 33.Nd5+–) 1–0. Hirtreiter,Michael – Glienke, BdF, 1987.

7.h3 Be6 =.

6.Be2 g6

7.Nc3 Ne7 =.

7.d4 e4

8.Nfd2 Be2

9.Qe2 a5 10.b5 =.

9.Qe2 a5 10.c4 =.

9.Qe2 f5 10.c4 c6 11.Nc3 Nf6 12.cd5 Nd5 13.Nc4 Qc7 14.f3 ef3 15.Qf3 Nc3 16.Bc3 Bg7 17.e4 0–0 18.e5. W Labahn.

9.Qe2 Bg7

10.c4 c6

11.Nc3 Ne7

12.0–0 0–0 13.Rac1 a6 14.f4 ef3 (14...f5 15.cd5 cd5 16.Rc2=) 15.gf3 (15.Qf3 f5+=) 15...f5= 16.Qd3 Nd7 17.Nb3 Rac8 18.c5 Qe6 19.Na5 Rc7 20.Ne2 (20.Rce1 Rf7=) 20...Bh6+= 21.Nf4 Bf4 22.ef4 Qf6 23.Rce1 Rf7 24.Re2 Qh4 ½–½. Jensen,Kristian Rohde – Schneider,F, ICCF corr, 1991.

12.Rc1 0–0 13.cd5 cd5 14.f3 =.

12.Rc1 a6 13.b5 (13.0–0 Nd7+=) 13...Nd7 (13...ab5 14.cd5 f5 15.dc6 bc6 16.0–0=) 14.c5 (14.bc6 bc6 15.0–0 Rb8+=) 14...Qc7 (14...Qe6 15.bc6 bc6 16.Rb1+=) 15.a4 (15.b6 Qd8+=) 15...0–0 (15...ab5 16.ab5 f5 17.0–0=) 16.h4 (16.b6!? Qd8 17.0–0+=) ½–½. Labahn,Wolfgang – Schneider,Fr, corr ICCF TT–4–90, 1990.

12.Rc1 f5 13.cd5 Nd5 14.Nd5 cd5 (14...Qd5 15.Qc4 Qc4 16.Nc4 Kd7 17.Ke2 Rd8) 15.Qb5 Qd7 16.Rc8 Ke7 17.Qc5 Qd6 18.Rc7 Nd7 19.Qd6 Kd6 20.Rb7. W Labahn.

12.cd5 cd5 13.Nb5 Qd7 14.Rc1 Na6 15.Nb3 b6 16.Nd6 Qd6 17.Qa6 Kf7 18.0–0 =. W Labahn.

12.f3 ef3 13.Qf3 f5 14.b5 0–0 15.0–0 f4. W Labahn.

6.Be2 Nh6!?

7.0–0 Nd7 8.Nc3 0–0–0 =.

7.0–0 Nd7 8.d4 e4 9.Nfd2 Be2 10.Qe2 Nf7 (10...f5!?=) 11.c4+= c6 12.Qg4 (12.Nc3 a6+=) 12...h5 (12...Nh6 13.Qh5 g6 14.Qe2+=) 13.Qf5+= g5 (13...Nh6 14.Qg6 (14.Qh5?? Nf7 15.Qh8 Nh8–+) 14...Nf7 15.cd5 cd5 16.Nc3+=) 14.cd5+/– cd5 15.Nc3 Nb6 16.Rac1 (16.f3 ef3 17.Qf3 g4 18.Qf6 Qf6 19.Rf6 Bh6+/–) 16...a6 (16...Qd7!? 17.Qd7 Kd7+=) 17.Nb3 (17…Qd7 A) 18.Qf6? Rh6 19.Nc5 Rf6 20.Nd7 Kd7–+ (< 20...Nd7 21.Nd5 Bd6 22.Nf6 Nf6 23.f3+=); B) 18.Qd7 Kd7 19.Nc5 Kc6 20.f3 ef3 21.Rf3+/–; 17.f3 ef3 18.Qf3 Nh6+/–) 1–0. Blaszczak – Silva Junior, corr 3GMM–59, 1996.

7.Nc3 a5 =.

7.c4 dc4 8.Bc4 e4 9.h3 =+.

7.c4 c6 8.0–0 (8.c5 Qe6=) 8...Be7 (8...dc4!? 9.Bc4 e4=+) 9.d4= e4 10.Nfd2 Be2 (10...f5 11.c5 Qe6 12.Nc3=) 11.Qe2+= 0–0 12.c5 (12.cd5 cd5 13.Nc3 Nd7=) 12...Qc7 13.a4 (13.f3 f5+=) 13...Nd7 (13...f5 14.f3=) 14.Rd1 (14.f3 f5=) 14...f5 15.b5 (15.f3 ef3 16.Qf3 Ng4=+) 15...Nf6 (15...Ng4 16.f4=+) 16.a5 (16.f3 ef3 17.Qf3 Nhg4=+) 16...Rae8 (16...cb5 17.Qb5 Nhg4 18.Nf1=+) 17.a6 (17.b6 Qb8=) 17...f4 (17...cb5 18.Qb5 Rb8 19.Nf1=+) 18.ab7 (better is 18.ef4 Qf4 19.ab7=) 18...f3 (better is 18...fe3 19.fe3 Nfg4=+) 19.gf3+/– cb5? Black gets in control (better is 19...Qb7 20.fe4 cb5+/–) 20.f4?? (20.Qb5!? a5+–) 20...g5?? (better is 20...Qb7 21.f3 ef3 22.Nf3 Nhg4=) 21.fg5 Nfg4 22.Nf1 Rf2 23.Qf2 Nf2–/+ 24.Kf2 Rf8 25.Ke2 Bg5 26.Ra7 Qb8 27.Ra8 Qb7 28.Rf8 Kf8 29.Ng3 b4 30.Nd2 Qb5 31.Kf2 Ng4 32.Kg2 Ne3 33.Kh3 Nd1 (34.Nge4 de4–+; 33...Qd7 34.Nf5 Qf5 35.Kg3 Qf4 36.Kh3 Qg4#) 0–1. toll (1985) – springare (2020), ICC, 2003.

7.d4 e4 8.Nfd2 Be2 9.Qe2 a5 10.c4 ab4 11.Qh5 g6 12.Qd5 Qd5 13.cd5 =.

7.d4 e4 8.Nfd2 Be2 9.Qe2 Nd7 10.c4 c6 11.0–0 Be7 12.Nc3 a6 (better is 12...Nf5!?+=) 13.cd5+/– cd5 14.Qh5 (14...Nf7 15.Nd5=+). Hind,Alan – Beecham, corr SCCA, 1989.

7.h3 Bf5 8.Nc3 =.

7.h3 Bh5 8.d3 (8.Nc3 Nd7=) 8...a5 9.b5 c6 (9...Be7 10.Nbd2=) 10.bc6 (10.Nc3 Be7=) 10...Nc6 11.Nbd2 (11.Nc3=) 11...Nf7 (11...Be7 12.c4=) 12.c4 (12.Ne5 Be2 13.Nf7 Bd1 14.Nd6 Bd6 15.Rd1 b5+/–) 12...Bg6 (12...Qd7 13.d4=) 13.d4 (13.Nh4 Rd8+=) 13...dc4 14.Nc4 Qc7 15.d5 (15.Qa4 Rb8 16.Qb5 e4+–) 15...Nb8 (better is 15...Rd8!?=+) 16.Rc1 (16.Nh4 b5 17.Ng6 hg6+/–) 16...Qd8 17.Nh4 Be4 18.Bf3 (18.Ne5 Bd5 19.Bb5 Bc6 20.Nc6 (20.Bc6?! Nc6 21.Nf7 Qd1 22.Rd1 Kf7+=) 20...bc6 21.Rc6 Qd1 22.Kd1+–) 18...Ng5? (18...Bf3 19.Qa4 Qd7 20.Qd7 Nd7 21.Nf3 b5=) 19.Be4+– Ne4 20.Qh5 Kd7 (20...g6 21.Ng6! hg6 22.Qg6 Ke7 23.Qe4+–) 21.Qf5 Ke8 22.Qe4 (22...Ra6 23.Qg4 Qd5 24.Qh5 Ke7 25.Nf5 Ke6 26.Qg4+–) 1–0. Szymanski,Marcin – Walewski,Wojciech, Zbaszyn, 1993.

5.e3 Nh6

6.c4 c6 7.Nc3 Be6 (7...e4 8.Nd4 Nf5 9.cd5 Nd4 10.ed4+=) 8.d4 (8.Rc1 Nd7=) 8...e4 9.Nd2 f5 (9...Nd7 10.Rc1 Bg4 11.Qb3 dc4 12.Qc2+=) 10.Qc2 (10.Rc1 dc4 11.Nc4 Qd8+=) 10...a6 11.Na4 (11.c5 Qc7+=) 11...b5 (11...Nd7 12.Nc5+=) 12.cd5 cd5 13.Nc5 Be7 14.a4 ba4 15.Qa4 Bd7 16.Qb3 (16.b5 Qb6=) 16...Bc6 (16...Ng4 17.h3 Nf6 18.Be2+=) 17.Be2 (17.b5 ab5 18.Ra8 Ba8 19.Bb5 Bc6+=) 17...0–0 (17...Ng4 18.h3 Nf6 19.0–0+=) 18.0–0+/– Kh8 (18...Bd8 19.Na6 Na6 20.Ra6 Ra6 21.Ba6+=) 19.f4 (19.f3 ef3 20.Nf3 Ng4+/–) 19...g5 (19...Ng4 20.Rfc1+= (< 20.Ba6 Na6 21.Na6 Bb5–/+)) 20.Rf2 (20.fg5 Bg5 21.b5 ab5 22.Ra8 Ba8+=) 20...g4 (20...gf4 A) 21.Ba6? fe3 (< 21...Na6 22.Rf4 Bb5 23.Na6–+) 22.Qe3 Ng4–+; B) 21.ef4?! Rg8+=; C) 21.Rf4 Bg5 22.Rff1+/–) 21.Rff1+/– Rf7 22.Bc3 g3 23.h3 Rg7 24.Rfb1 Bd8 25.Na6+– Na6 26.Ra6 Ra6 27.Ba6 Bb6 28.Nf1 Ra7 29.Be2 Ng8 30.b5 Bb7 31.Ng3 Qg6 32.Kh2 Ra8 33.Nh5 Nf6 34.Nf6 Qf6 35.Rg1 Bc7 36.g3 Rg8 37.Bb4 Bb6 38.Qc3 Rc8 39.Qd2 Ra8 40.Bc5 Bc5? 41.dc5 Ra4 42.c6 Bc8 43.b6 Qc6 44.Rc1 Ra2 45.Qd4 (45...Kg8 46.Rc6 Re2 47.Kg1+–; 45.Qa2?! Qc1 46.Qd5 Qb2 47.Qd4 Qd4 48.ed4 Kg7+–) 1–0. Sitnikov,Anton – Dyachkov,Sergej, Serpukhov–A, 2003.

6.c4 c6 7.Be2 Be6 (7...dc4 8.Bc4 Bg4 9.h3=) 8.cd5 cd5 9.0–0 Nd7 (9...Be7 10.Nc3=) 10.Nc3+= Rc8 (10...Be7 11.d4 e4 12.Nd2=) 11.Rc1 Qb8 (11...Nb6 12.d4 e4 13.Nd2+=) 12.Qb3+/– Nb6 13.e4 Rd8 (13...Bd6 14.d4 ed4 15.Nd5+–) 14.d4 Kf7 (14...Ke7!? 15.ed5 Nd5 16.Nd5 Bd5+–) 15.ed5+– Bd7? (15...Nd5 16.Bc4 e4 17.Bd5 Rd5 18.Nd5 Qd8+–) 16.de5 fe5 17.Ne4 Ba4 18.Nfg5 (18.Qa2!? Bd6 19.Nd6 Qd6 20.Rc7 Ke8 21.Be5 Qd5+–) 18...Kg8 (18...Ke7 19.Qh3 Bd7 20.Qe3+–) 19.Qa2 Bd6 20.Be5! Be5 21.d6 Kf8 22.Ne6 Ke8+/– 23.Nd8 Kd8 24.b5 Nf5? 25.Qe6+– Nd7?? 26.Qf5 Bb3 27.Bg4 (27.Bg4 Bh2 28.Kh2 Ke8 29.Qd7 Kf8 30.Ng5 Bc4 31.Ne6 Be6 32.Qe7 Kg8 33.Be6#) 1–0. Tirado Parra,Alberto (1910) – Julian Serra,Rogelio (2040), Madrid ESP, 3rd Gonzalez Mem–B, 2012.

6.c4 e4 7.Nd4 Bg4 8.f3 ef3 9.gf3 +=.

6.c4 Be6 7.d4 e4 8.cd5 Bd5 9.Nfd2 f5 10.Nc3 c6 11.Nc4 Qe6 12.Na5 b6 13.Nd5 Qd5 14.Bc4 Qd6 15.Nb3 b5 16.Be2 Nd7 17.d5 Nf6? (better is 17...cd5!? 18.Bb5 a6+/–) 18.dc6+– a6 19.Bf6 Qd1? (19...gf6 20.Bh5 Kd8+–) 20.Rd1 gf6 21.Bh5 Ke7 22.Rd7 Ke6 23.Ke2 Rc8 24.Nd4 Ke5 25.Ra7 (better is 25.f4!? ef3 26.gf3 f4 27.ef4 Kf4+–) 25...Bd6 (25...f4 26.Ra6 fe3 27.Nb5 ef2 28.Ra5+–) 26.Ra6 Ra8 27.Ra8 Ra8 28.Nb5 Bb4 (28...Rc8 29.Rc1 Ke6 30.f4+–) 29.Rc1 Bd6 30.c7 Rc8 31.Be8 (better is 31.Rc6 Ba3 32.Na3 f4+–) 31...Ke6 (31...Re8 32.Nd6 Kd6+–) 32.Rc6 Ke7 (32...Re8 33.Nd6 Ra8 34.Ra6+–) 33.Nd6 (33...Rc7 34.Rc7 Kd6 35.Rd7 Ke5 36.Rh7+–) 1–0. Lehr,Thomas – Saam,Armin, Koblenz–ch, 1999.

6.d4 e4 7.Nfd2 =.

4.g3 Nf6

5.Nf3 Nbd7 6.Bg2 =+.

5.Bg2 Be7

6.d3 a5 7.b5 A) 7...0–0 8.Nf3 Nbd7 9.0–0 c6 10.c4 d4 11.a4 c5 12.e3 Re8+=; B) 7...Nbd7 8.Nf3 (8.Nd2 c6 9.c4 cb5 10.cd5 0–0 11.Qb3 Nc5 12.Qb5 Bd7+=) 8...0–0 9.0–0 c6 10.c4 d4 11.a4 cb5 12.ab5 Nc5=; C) 7...c6 8.Nf3 (8.c4 cb5 9.cd5 Nd5 10.d4 ed4 11.Qd4 Bf6 12.Qd2 Bb2+=) 8...Nbd7 9.c4 cb5 10.cb5 0–0 11.0–0 d4 12.Nbd2 Nb6+=; D) 7...Be6 8.Nf3 (8.c4 0–0 9.d4 ed4 10.Bd4 c5 11.Bf6 Bf6 12.Ra2 d4+=) 8...Nbd7 9.Ng5 Bg4 10.h3 Bh5 11.c4 h6 12.Nf3 dc4+=.

6.d3 a5 7.Nd2 A) 7...Be6 8.c4 ab4 9.ab4 Ra1 10.Qa1 d4 11.Qa8 c6 12.Qb7 Qb4=; B) 7...0–0 8.Ngf3 (8.c4 Nc6 9.b5 Na7 10.Ngf3 d4 11.Qa4 Bd7 12.Nb3 c6=; 8.b5 c6 9.Ngf3 Nbd7 10.c4 d4 11.0–0 Nc5 12.a4 cb5+=) 8...e4 9.de4 Ne4 10.Ne4 de4 11.Qd4 Qd4 12.Nd4 f5=; C) 7...Nbd7 8.Ngf3 c6 9.c4 ab4 10.ab4 Ra1 11.Qa1 d4 12.c5 Qe6+=; D) 7...ab4 8.ab4 Ra1 9.Qa1 Nc6 10.c3 0–0 11.b5 Nd8 12.Ngf3 Ne6+=.

6.d3 a5 7.Nf3 Nbd7 8.b5 (8.Nbd2 ab4 9.ab4 Ra1 10.Qa1 e4 11.Ne5 Ne5 12.Be5 Qb4=; 8.0–0 ab4 9.ab4 Ra1 10.Ba1 0–0 11.Nbd2 Qe6 12.b5 c6+=) 8...a4 (8...0–0 9.0–0 Rd8 10.c4 c6 11.Qa4 Nc5 12.Qc2 d4+=) 9.Nbd2 (9.0–0 0–0 10.c4 dc4 11.dc4 Qc5 12.Qc2 c6=) 9...0–0 10.0–0 (10.Rb1 Qe6 11.0–0 Rd8 12.c4 d4+=) 10...Re8 (10...Ra5 11.c4 d4 12.Rb1 Nc5+=) 11.c4 (11.Rb1 c6 12.bc6 bc6+=) 11...d4 12.Ng5 h6 (12...Qb6+=) 13.Nge4 Ne4 14.Ne4 Qg6 15.e3 f5 16.Nd2 de3 17.fe3 Nc5 18.Qc2 (18.Qf3 Rd8 19.Be5 Rd3=) 18...f4 19.ef4 Qd3 (19...Nd3 20.Bd5 (20.fe5?? Bc5 21.Rf2 Bf2 22.Kf1 Bf5–+) 20...Kh7 21.Ne4 Nb2 22.Qb2=) 20.Bd5+= Kh8 21.Qd3 Nd3 22.Be5 Bh3 23.Bb7 Bc5 24.Kh1 Bf1 (24...Ne5 25.Ba8 Nc4 26.Nc4 Bf1+–) 25.Rf1?? (25.Ba8 Nf2 26.Kg1 Ne4 27.Kf1 Nd2 28.Ke2 Nc4 29.Bc6+=) 25...Rad8 (better is 25...Rab8 26.Bc6 Re7+=) 26.Bc7+– Nf2 (26...Rd4 27.Bc6 Re2+=) 27.Rf2 Bf2 (27...Rd7 28.Bc6 Re1 29.Rf1 Rf1 30.Nf1 Rc7 31.Kg2+/–) 28.Bd8 Rd8 29.Bd5 Bc5 30.Ne4 Ba3 31.Nc3 Bb2 (31...g6 32.Na4 Kg7 33.Kg2+–) 32.Na4 Bd4 33.Kg2 Re8 (33...g6 34.Kf3+–) 34.b6 (34.c5 Rc8 35.c6 Rb8+–) 34...Re2 35.Kf3 Ra2 36.b7 Ba7 37.Nb6 Rh2 38.Nd7 (38.Nd7 Rd2 39.b8Q Bb8 40.Nb8 Rd3 41.Kg4+–) 1–0. Nivala,T (2205) – Pulkkinen,K (2330), TCh–FIN, 2007.

6.d3 Bg4 7.Nf3 Nbd7 8.0–0 0–0 9.Nbd2 a5 10.b5 c6 11.c4 Rfc8 12.d4 e4 13.Ne1 (13.bc6 bc6 (< 13...ef3 14.ef3 Bf3 15.Qf3 bc6 16.Rfe1+=) 14.Ne5 Be6=+) 13...Qe6 (13...cb5 14.cb5 a4 15.f3 ef3 16.ef3–/+) 14.bc6=+ bc6 15.cd5 (15.c5 Rcb8 16.Rb1 e3–/+) 15...cd5 16.f3 ef3 17.ef3 Rab8 18.Nd3?? (better is 18.Rc1 Bf5 19.Rc8 Rc8 20.Rf2–/+) 18...Qe3–+ 19.Nf2 Rb2 20.fg4 Rd2 (< 20...Qd2 21.Qd2 Rd2 22.Rfe1–+) 21.Qe1 Re2 22.Qd1 Rcc2 (23.Kh1 Rf2 24.Rf2 Qf2–+) 0–1. arturo – AndyAndyO, ChessWorld.net, 2005.

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

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