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(c) Marek Trokenheim

1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6

(...)

5.a4 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 b6).

5.a4 Be7 6.Nf3 Nbd7 7.c4 0–0 8.cd5 Nd5 9.Be2 Bb7 10.0–0 N5f6 (10...c5 11.Nc3=) 11.Nd4 (11.Qc2 a6+=) 11...Rc8 (11...Nd5 12.Nc3+=) 12.Bf3 Ne5?? (better is 12...Nd5+=) 13.Bb7+– Rb8 14.Nc6 Nc6 15.bc6 (15.Bc6 Qd3+–) 15...Nd5 (15...Qd3 16.Na3+–) 16.Nc3 Nf6 (16...Nb4 17.d4+–) 17.d4 (17.Nb5 Ne8+–) 17...Bd6 (17...a5 18.Nb5+–) 18.Nb5 Ne4 (18...a5 19.Qf3+–) 19.Nd6 (19.Qc2 Nf6+–) 19...Qd6 (19...Nd6 20.Ba3+–) 20.Qf3 (20.Ba3 Qd5 21.Bf8 Rf8+–) 20...Ng5 (20...Nd2 21.Qh3 Nf1 22.Ba3 (22.Kf1?! Qb4+=) 22...Qh2 23.Qh2 Nh2 24.Bf8 Nf3 25.gf3 Kf8 26.f4+–) 21.Qf4 (better is 21.Qg4 Qd5 22.Qf4 Ne4 23.Qc7 Nd2+–) 21...Qe7 (21...Qf4 22.ef4 Ne4 23.Rfe1+–) 22.d5! h6 23.h4 Nh7 24.Rfd1 g5 25.hg5 hg5 26.Qg4 f5 27.Qh5 Nf6 28.Qg6 Qg7 29.Qg7 Kg7 30.de6 Rfe8 31.Rd7 Kg6 32.Rf7 Re6 33.Bf6 Rf6 34.Rf6 (34…Kf6 35.Rd1+–; better is 34.Rc7 Rd6+–) 1–0. FrutiniMalini – truman, Caissa's Web, 2004.

5.Nc3 Be7 6.a3 0–0 7.g3 (7.Nf3 a6=+) 7...c5 8.Bg2 Bb7 9.d3 Nbd7 10.Nce2 e5 11.Nf3 e4 12.Ne5 Ne5 13.Be5 ed3 14.cd3 Bd6 15.Bd6 Qd6 16.0–0 Rab8 17.Rc1 Rfc8 18.h3 Qd7 19.Nf4 (19.Qb3 Ra8=) 19...d4 (better is 19...Qb5!? 20.Qc2 Qd7–/+) 20.Bb7= Rb7 21.e4 (21.a4 Qd6=) 21...Rbc7 (21...Qb5!? 22.e5 Nd7–/+) 22.a4=+ c4 23.g4 (23.e5 Nd5 24.Nd5 Qd5 25.dc4 Rc4 26.Rc4 Qc4=+) 23...c3 (23...cd3 24.Rc7 Qc7 25.Nd5 Nd5 26.ed5–/+) 24.g5=+ Ne8 25.Nd5 Rc5 26.Kg2 (26.f4!?–/+) 26...Nc7–+ 27.Qf3 (better is 27.Nc7 Rg5 28.Kh2 Qc7 29.f4–+) 27...Nd5 28.ed5 Qd5 29.Qd5 Rd5 30.h4 Rf5 31.f4 Re8 (31...a6 32.ba6 Ra5 33.Rb1 Ra6 34.Rb4–+) 32.Rc2 (32.Rfe1!? Re1 33.Re1 f6–+) 32...g6 33.Rf3 Kf8 34.Kg3 (34.Rf1 f6–+) 34...Rd5 (34...Re1 35.Ra2–+) 35.Kg4 Rd7 (35...f5 36.gf6 Rf5 37.h5–+) 36.f5 gf5 37.Rf5 (better is 37.Kf5 Re1 38.Kg4–+) 37...Rde7?? (37...Re3 38.Rf3 Rde7 39.h5–+) 38.Rf6?? (better is 38.Rd5=) 38...Re2 (better is 38...Re3!? 39.Rh6 Kg7 40.Rd6 Rd3 41.Kf4–+) 39.Re2 Re2 40.Rh6?? (40.Rd6 Re1 41.Rc6 Rd1–+) 40...c2 (better is 40...Re6 41.Rh7 Kg8–+) 41.Rh7?? (better is 41.Rc6–/+) 41...c1Q–+ 42.Rh8 Ke7 43.Ra8 Qg1 44.Kh5 (44.Kf5 Qf2 45.Kg4 Qg2 46.Kf4 Qa8 47.h5 Re3 48.g6 Kf6 49.Kg4 Qf3 50.Kh4 Qf4) 44...Ke6 (44...Re6 45.Ra7 Kd6 46.Rd7 Kd7 47.a5 Qd1) 45.Ra7 (45.Re8 Kf5 46.Re2 Qg4 47.Kh6 Qe2 48.Kg7–+) 45...Rh2 46.Ra6 (46.Rd7 Qd1 47.Kh6 Rh4 48.Kg7 Qd3 49.Rd6 Kd6 50.Kf7 Qf5 51.Kg7 Rh7 52.Kg8 Qf7) 46...Qh1 (46...Kf5 47.Kh6 Qg5 48.Kh7 Rh4) 47.Kh6 (47.Rb6 Ke5 48.Kh6 Rh4 49.Kg7 Rh7 50.Kf8 Qa8 51.Rb8 Qb8 52.Ke7 f5) 47...Rh4 48.Kg7 Rh7 (49.Kf8 Rh8 50.Kg7 Qh7) 0–1. MasterofDisaster – Hamam1, Live Game Caissa's Web, 2004.

5.c4 a6 6.Qf3 =+.

5.c4 c6 6.cd5 cd5 7.Nf3 Nbd7 8.d4 Bb7 9.Bd3 Bb4 10.Nc3 0–0 11.0–0 Ne4 (11...Qe7 12.Qa4=) 12.Rc1 (12.Qb3 Qe7=) 12...Rc8 (12...Qe7 13.Qb3=) 13.Qb3+= Qe7 14.Rc2 Nc3 15.Bc3 Rc3 (15...Bd6 16.Rfc1+=) 16.Rc3 Bc3 17.Qc3 Rc8 18.Qb2 h6 (18...Qd6 19.Rc1 Rc1 20.Qc1+=) 19.Rc1+/– Rc1 20.Qc1 Nf6 21.Ne5 Ne4 22.Be4 (22.f3 Nd6+=) 22...de4+= 23.h4 (23.Nc6 Qc7+=) 23...Qd6 (23...g6 24.Qc2=) 24.Qc4 ½–½. Woelfelschneider,Peter – Vance, VCC, 2000.

5.Bd3 a6 6.a4 =.

5.Bd3 Bb7 6.Be5 (6.Nf3 a6=) 6...c5 7.bc6 (7.Nf3 Nbd7=+) 7...Nc6 8.Bg3 (8.Bb2 e5=+) 8...Bd6 9.Bh4 (9.Nc3 0–0–/+) 9...0–0 10.Nf3 Ne5 (10...e5!? 11.Be2 d4–/+) 11.Ne5= Be5 12.c4?? (better is 12.c3=+) 12...Rc8 (12...Ba1 13.Qc2–+) 13.cd5?? (13.Nc3 dc4 14.Bf1–+) 13...Ba1 14.de6 (14.f3 Qd5 15.Bf6 Bf6–+) 14...Be5 (better is 14...Qd3!? 15.e7 Rfe8 16.f3–+) 15.0–0 (15.Bf5 Bg2 16.f4–+) 15...Qd3 16.e7 (16.f4 Bb2 17.Nc3 Bc3 18.dc3 Qe3 19.Bf2 Qe4–+) 16...Qe4 (better is 16...Rfe8 17.f4 Bb2 18.Kf2–+) 17.ef8Q Rf8 18.f3 Qh4 (19.f4 Bb2–+) 0–1. pinecrest1981 – bueno, Live Game Caissa's Web, 2005.

5.Be2 Bb7 6.Nf3 (--> 5.Nf3 Bb7 6.Be2).

5.f3 Be7 6.Nc3 0–0 7.Bd3 c6 8.f4 cb5 9.Nb5 Bd7 10.Nf3 Bb5 11.Bb5 a6 12.Bd3 b5 13.a4 b4 14.Qe2 a5 15.Nd4 Bc5 16.0–0 Bd4 17.Bd4 Nc6 18.Bb2 d4 19.Qf2 de3 20.Qe3 Nd5 21.Qg3 g6 22.f5 ef5 23.Rf5 Qc7?? (better is 23...Rb8+=) 24.Qc7+– Nc7 25.Rc5 Ne6 26.Rc6 Nf4 27.Bc4 Rac8 28.Rc8 Rc8 29.Re1 h6 (29...Kf8 30.d3 Ne6 31.c3+– (worse is 31.Be6 fe6 32.Re2 Ke7+–)) 30.Re7 Rc4 (30...g5 31.Bb3 Rf8+–) 31.Re8 Kh7 32.Rh8 1–0. Heini – chessenemy, internet, 2016.

5.Qf3 Nbd7 6.g3 (6.Nc3 Bd6+=) 6...Bb7 7.Bg2 (7.Nc3 Bd6+=) 7...Rb8 (7...a6 8.c4–/+) 8.Qf4 (8.Qe2 c6+=) 8...Bd6 9.Qh4 0–0 (9...a6 10.ba6 Ba6 11.d3+=) 10.Ne2 (10.Nf3 a6+=) 10...Be7 (10...a6 11.a4+=) 11.0–0 (11.Nd4 Ra8+=) 11...Nc5 (11...a6 12.a4+=) 12.Qd4 (12.Ba3 a6=) 12...Ncd7 (12...a6 13.a4+=) 13.Nbc3 (13.Qh4 c6+=) 13...c5 (13...a6 14.f4+=) 14.bc6 Bc6 Black begins to deal mighty blows 15.a3 (15.f4!?+=) 15...e5–/+ 16.Qd3? (16.Qh4 Ne4! 17.Qh3 Nd2 18.Rfd1+=) 16...e4–+ 17.Ne4 de4 (worse is 17...Ne4 18.Nd4 Bb7 19.Qe2–+) 18.Qd4 Bc5 19.Qc4 b5 (19...Rc8 20.Qb3–+) 20.Qd4 (20.Qc3–+) 20…Bd4 (20...Bd4 21.Nd4 Qc7–+) 0–1. Fischer,D/Breterni – Hroch, corr ICCF EU–II–768, 1981.

5.Nf3 Bc5 6.Be2 0–0 7.0–0 c6 8.a4 cb5 9.ab5 Bd7 (9...a6 10.ba6 Ba6 11.Bb5+=) 10.c4 dc4 11.Bc4 Qe8 (better is 11...Bc8!?+/–) 12.Bf6+– gf6 13.Nd4 Bd4 (better is 13...a5+–) 14.Qg4 Kh8 15.Qd4 e5 16.Qe4 Nc6 17.bc6 Bc6 18.Qh4 Qe7 19.Rc1 Rg8 20.Bd3 Rg2 (20...e4 21.Rc6 ed3+–) 21.Kf1 Rg7 22.Rc6 Rag8 (22...Qd7 23.Be4+–) 23.Qf6 Qd7 (23...Qf6 24.Rf6 Rg1 25.Ke2+–) 24.Bf5 Qd5 25.Ra4 Qg2 (25...Qb5 26.Rcc4 a5 27.Bh7+–) 26.Ke2 (26...e4 27.Re4+–) 1–0. Trkn – Panos42, ICC, 2004.

5.Nf3 Ne4 6.Nc3 (6.Be2 a6=) 6...Nc3 (6...Bd6 7.Ne4 de4 8.Ne5=) 7.Bc3 a6 8.a4 ab5 (8...f6 9.Nh4 g6 10.a5=) 9.ab5 Ra1 10.Qa1 Bd7? (better is 10...f6!?=) 11.Bg7+/– Bg7 (11...Rg8 12.Bf8 Kf8 13.Qe5+/–) 12.Qg7+– Rf8 (12...Ke7 13.Ne5 Qg8 14.Qh6+–) 13.Bd3 (13.Qh7 c5+–) 13...Qe7 14.Qa1 (14.Qe5 Kd8+–) 14...Qc5 (better is 14...f5!?+–) 15.Ng5 (15.Bh7?! Bb5 16.h4 Nd7+–) 15...Bb5 (15...Rg8 16.Nh7 Kd8 17.Nf6+–) 16.Nh7 (16.Bb5 Qb5 17.Nh7 Nd7+–) 16...Rg8 (16...Bd3 17.cd3 Nd7 18.Nf8 Qf8 19.Qa8 Ke7 20.Qf8 Kf8 21.d4+–) 17.Nf6 (17.Nf6 Kf8 18.Bb5 Qb5 19.Ng8 Kg8 20.h4+–) 1–0. Tyngda – Titlit, internet, 2017.

5.Nf3 g6 6.c4 dc4 7.Bc4 Bg7 8.0–0 0–0 9.d3 Bb7 10.Qb3 Nbd7 11.d4 Bf3 12.gf3 Nh5 13.Nd2 Re8 14.Be2 Ndf6 15.Bd3 e5 16.de5 Nd7 17.f4 Nc5 0–1. Trkn – TDG703, itsyourturn.com 2000.

5.f4 Bb4 6.Bd3 (6.a3 Bd6=) 6...c6 (6...a6 7.Nc3=+) 7.Nf3 0–0 8.Nc3 (8.a3 Bd6=) 8...cb5 (8...c5 9.a3 Bc3 10.Bc3= (< 10.dc3 c4–/+)) 9.Nb5 Na6 (9...Ne4 10.0–0=) 10.0–0 Bb7 (10...Ne4 11.a3 Be7 12.Ne5=) 11.Ng5 g6 (11...Ne4 12.Qh5 Ng5 13.fg5+/–) 12.Be5 (12.Be2 h6 13.Nf3 Ne4+=) 12...h6 (12...Be7 13.Be2+=) 13.Nf3+= Ng4 (13...Ne4 14.Nbd4 Rc8 15.Bb5+=) 14.Qe1 (14.Bd4!?+=) 14...Ne5 15.fe5 Kg7 (15...Nc5 16.a3 Nd3 17.cd3=) 16.Qg3 Nc5 17.a3 (17.Nd6 Nd3 18.Nb7 Qc7 19.cd3 Qb7+=) 17...Nd3 18.ab4 Nb4 19.Nd6 Rb8? (better is 19...Bc8=) 20.Nd4 a5?? (better is 20...Qd7 21.Rf6 Kg8+–) 21.Rf7! Rf7 22.Ne6 Kh7 23.Nd8 Rd8 (23...Re7 24.N8f7 Rf7 25.Nf7 Nc2 26.Rc1+–) 24.Nf7 Rf8 (24...Rc8 25.Qh3 Kg8 26.Nd6 Rc2 27.Qe6 Kh7 28.Qe7 Kg8 29.Ne8 Rc1 30.Rc1 d4 31.Qg7) 25.Qf4 Nc2 26.Qh6 Kg8 27.Qg6 1–0. pcmvr (2560) – maf (2100), net–chess.com, 2006.

5.f4 Bc5 6.Nf3 Bd7 (6...a6!?=) 7.a4 0–0 8.Be2 a6 9.c4 ab5 10.ab5 Ra1 11.Ba1 Bc8 12.cd5 ed5 13.0–0 Nbd7 14.d4 Bb4 15.Qb3 Qe7 16.Ne5 Bb7 17.Nc3 Ra8 18.Bb2 Ba3 19.Bc1 Nf8 20.Bf3 d5 becomes the focus of attention 20...Qb4 21.Qc2 Ng6 22.g4 Nh4 23.Bh1 Bc1 24.Rc1 Qd6 25.Kf1 h5 26.h3 Nd7 27.Qf2 Qa3 28.Ne2 Ne5 29.de5 Qe7 30.f5 g5 31.Qh2 hg4 32.hg4 Rc8 (32...Qa3!?+=) 33.Nd4+/– Kh7 34.e6 f6 35.Nf3 Kg7 36.Kf2 c5 37.bc6 Rc6 38.Rc6 Bc6 39.Nd4 Ba8?? (better is 39...Bb7+/–) 40.Qb8+– Bb7 41.Qa7 Kf8 42.Qb6 Kg7 43.Qb5 (43.Qb5 Kf8 44.Bd5 Bd5 45.Qd5+–) 1–0. pcmvr – pierred (2850), net–chess.com, 2015.

5.f4 Bd7 6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c5 10.Be5 Ng4 11.Bb2 Be7 (11...Bc8!?+=) 12.Bg7+/– Rg8 13.Bb2 c4 14.Nc3 Bf6 15.Qa1 Bc3 (better is 15...Bc8+–) 16.Bc3 Bb5 17.h3 Nf6 (17...Nh6 18.Bf6 Qc8+–) 18.Bf6 Qc8 19.Qa3 Nc6 (19...Qd7 20.Kf2 Bc6 21.Ne5+–) 20.Nd4 Nd4 (20...Kd7 21.Nb5 Qf8+–) 21.Qe7 1–0. pcmvr – preethan (2135), net–chess.com, 2015.

5.f4 Nbd7 6.Nf3 Bd6 7.Be2 0–0 8.0–0 h6 (8...a6 9.Nc3=) 9.c4 (9.Ne5 a6=) 9...Bb7 (9...a6 10.Ne5=) 10.Nc3 (10.cd5 Nd5 11.Nc3 a6=) 10...Nc5 (10...dc4 11.Bc4 a6 12.a4=) 11.Qc2 (11.d4 Nce4+=) 11...Nce4 (11...dc4 12.Bc4 Bf4 13.Rad1=) 12.cd5 ed5 (12...Nc3 13.Qc3 Bd5 14.Qc2+=) 13.Nd4+= Rc8 (13...a6 14.ba6 Ba6 15.Ba6 Ra6 16.Nd5 Nd5 17.Qe4+/–) 14.a4 (14.d3 Nc3 15.Qc3 a6+=) 14...Nc5 15.Nf5 (15.a5 c6+/–) 15...Qd7 (15...c6!?+=) 16.Nd6+/– Qd6 17.Bf3 (17.a5 c6+=) 17...Rfe8 18.Rfe1 (18.a5 c6 19.a6 Ba8+=) 18...Nfe4 (18...c6 19.bc6 Bc6 20.a5=) 19.Ne2 (19.d3 Nc3 20.Qc3 Qg6+=) 19...Rcd8 (19...c6!?=) 20.Nd4 Bc8 21.Nc6 Rd7 22.Bg4 f5 23.Bf5+– Rf7 24.Be5 Qf8 25.Bg6 Bf5 26.Bf7 Qf7 27.Nd4 Bh7 28.Qa2 Nd3 29.Rf1 Nef2 30.Nf3 Be4 31.Rf2 Nf2 32.Kf2 Qh5 33.Rh1 Re6 34.d3 Bf3 35.gf3 Qh4 36.Kf1 Qh3 37.Qg2 1–0. Devis – Goossens, Beveren, 1995.

5.a4 Bb7

6.c4 c6 7.cd5 cd5 8.Qf3 (8.Nf3 Bd6=) 8...Be7 (8...Nbd7 9.d4=+) 9.Bc4 (9.d4!?=) 9...Qc7=+ 10.Bb3 0–0 11.d4 Nbd7 (11...Bb4 12.Kd1–/+) 12.Ne2 e5 (12...Bb4 13.Bc3 Bd6 14.Nd2=+) 13.0–0 e4 14.Qh3 Bd6 15.Rc1 Qd8 16.Ba3 Ba3 17.Na3 Bc8 (17...Qe7 18.Rc7 Rab8 19.Nc2+=) 18.Nf4?? (better is 18.Qg3+=) 18…Nc5!–+ (19.dc5 Bh3 20.Nh3 bc5 21.Rc5 Qd6–+) 0–1. tromar (1770) – NN, GameColony.com, 2002.

6.f3 Bc5 7.g3 (7.a5 Nbd7=) 7...0–0 8.Bg2 h6 (8...d4!?–/+) 9.Ne2= Nh7 10.0–0 f5 11.Nd4 e5? (better is 11...Qe8+=) 12.Ne6+– Qe7 13.Nf8 Qf8 (better is 13...Nf8 14.d4 ed4 15.ed4 Qe3 16.Kh1 Bd6+–) 14.Be5 Bd6 15.Bd4 c5 16.bc6 Nc6 17.c3 Rc8 18.f4 Qf7 19.Qb3 Nd4 20.cd4 Re8 (20...Nf6 21.a5 ba5 22.Ra5+–) 21.Nc3 Nf6 22.h3 Ne4 23.Ne4 fe4 24.Kh2 (24.d3 ed3 25.Qd3 Qe6+–) 24...Qg6? (24...Ba6 25.Rfc1+/–) 25.g4 (25.a5 Bb8+–) 25...h5 (25...Qe6 26.d3 ed3 27.Rad1+– (27.Qd3?! Qe3 28.Qe3 Re3+/–)) 26.Qd1 (26.gh5!? Qh5 27.d3 ed3 28.Qd3 Bc6+–) 26...h4 27.a5 b5 28.a6 Bc8 29.Qb3 Be6 30.Qb5 Rf8 31.Qc6 Bf7 32.Rab1 (32.Qb7 Bb8+–) 32...Kh7 (better is 32...Bf4 33.Rf4 Qc6–+) 33.Rb7 (better is 33.Qd7+–) 33...Be8?? (better is 33...Bf4 34.Rf4 Qc6 35.Rff7 Rf7 36.Rf7 Qa6–+) 34.Ra7 (better is 34.Qd5 Bc6 35.Qc6 Bf4 36.Rf4 (36.ef4?! Qc6 37.Ra7 Qb6 38.Be4 Kh8+/–) 36...Qc6 37.Be4 Qe4 38.Re4 Rf2 39.Kg1 Rd2 40.Ra7+–) 34...Bc6–+ 35.Rb7 (35.Rb1–+) 35...Bb7 36.ab7 Rb8 37.Rb1 Qf7 38.g5 Rb7 39.Ra1 (39.Rf1 Qh5 40.Kg1 Bb4–+) 39...Ra7 40.Rb1 (40.Rf1 Qh5 41.Kg1 Bb4–+) 40...Rb7 (41.Ra1 Bf4 42.ef4 Qf4 43.Kg1 Qd2 44.Kh1 Rb2 45.g6 Kh6 46.Rg1 e3 47.Kh2 e2 48.Kh1 e1Q 49.Kh2 Qg1 50.Kg1 Qg2#; better is 40...Bf4 41.Kh1 Bg5–+) 0–1. MasterofDisaster – BEACHBUM, Live Game Caissa's Web, 2004.

5.c4 dc4

6.Bc4 Bb7 7.Nf3 a6 8.a4 a5 9.0–0 Bb4 10.d4 Ne4 11.Nbd2 Nd2 12.Nd2 0–0 13.f3 Nd7 14.Ba3 Ba3 15.Ra3 h6 16.e4 Nf6 17.e5?? (17.Rd3 c6+=) 17...Nh7?? (better is 17...Qd4 18.Kh1 Qe5–+) 18.Ne4+= Be4 19.fe4 Ng5 20.Re3 Qd7 21.Bb3 Rad8 22.Rd3 (better is 22.d5!?+/–) 22...Ne4+= 23.Re1 Ng5 24.Bc2 Qd5 25.Bb3 Qd7 26.d5 ed5 27.Bd5 Qc8 28.Bc4 Rd3 29.Qd3 c6 30.Qe2 cb5 31.Bb5 Qc5 ½–½. Valpa – Grunert, playchess.de, 2005.

6.Bc4 Bb7 7.Nf3 c5 8.0–0 Be7 9.d4 Nbd7 10.Nbd2 0–0 11.Qb3 cd4 12.ed4 Bd5 13.Rac1 Qb8 14.Rfe1 Qb7 15.a4 Rac8 16.Ba3 Ba3 17.Qa3 Rc7 18.Bd5 Nd5 19.Rc7 Qc7 20.Rc1 Qb7 21.Nc4 Rc8 22.Nce5 Ne5 23.Ne5 Rc1 24.Qc1 f6 25.Nc6 Qc7 26.g3 Kf7 27.Qc2 g6 28.h4 Kg7 29.Qe4 Kf7 30.h5 a5 31.Kg2 Qd6 32.Kh2 Kg7 33.hg6 hg6 34.Qe2 Nc3 35.Qc4 Nd5 36.Qc1 Qc7 37.Qa3 Kf7 38.Qc1 Kg7 ½–½. Svitek,Volker (2100) – Goebel,Andreas (2050), Frankfurt–ch, 2008.

6.Qf3= c6 7.Bc4 Bb7 8.Ne2 =.

6.Qf3= Qd5 7.Bf6 (7.Bc4 Qf3 8.Nf3 Bb7=) 7...gf6 (7...Qf3 8.Nf3 gf6 9.Bc4=) 8.Bc4 Qf3 (8...Qc4 9.Qa8) 9.Nf3 Bb7 10.d4 Nd7 (10...Rg8 11.Kf1=) 11.Nc3 (11.Ke2 c5=) 11...0–0–0 (11...Bb4 12.Kd2=) 12.Rc1 (12.Rg1 Rg8 13.Ke2 Ba3+=) 12...Bb4 (12...Rg8 13.Kf1=) 13.Kf1 (13.0–0 Bf3 14.gf3 Kb7+=) 13...e5 (13...Ne5! 14.de5 Bf3=) 14.Bd5+/– Bc3 15.Bb7 (15.Rc3? Bd5 16.Ke2 Rhg8–+ (16...Ba2?! 17.Ra1 ed4 18.Nd4–+)) 15...Kb7 16.Rc3 ed4 17.ed4 h6 18.Ke2+/– Rde8 19.Kd3 f5 20.Rhc1+– Re4?? 21.Rc7 Kb8 22.Rd7 f6 23.Rcc7 Rhe8 24.Rb7 Kc8 25.d5 Re2 26.Rdc7 Kd8 27.d6 (27...Rd2 28.Nd2 Re3 29.fe3 a6 30.Rb8#) 1–0. pierre_d – blackgun, ChessWorld.net, 2005.

5.c4 c5

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 b6).

6.Nf3 Bd6 7.Be2 Nbd7 8.0–0 0–0 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6).

5.c4 Nbd7

6.Nf3 Nc5 7.cd5+= Nd5 8.Bc4 (8.Nc3+=) 8...Qd6 (8...a6!?=) 9.Ne5 (9.0–0 Bb7+/–) 9...Qe7 (9...Nd7!? 10.f4 Bb7+=) 10.d4+/– Nd7 11.Bd5 (11.Nc6!? Qf6 12.e4+/–) 11...ed5+= 12.Nc6 (12.Nc3 A) worse is 12...Ne5 A1) 13.de5?! Bb7= (worse is 13...Qe5 14.Qd5 Qd5 15.Nd5+=); A2) 13.Nd5 Qd7 14.de5+/–; B) 12...Bb7 13.Nd3 Qg5=) 12...Qg5 (12...Qe6 13.Nc3=) 13.Qf3 (13.0–0 Nf6=) 13...Nf6= 14.h3 (14.Ba3 a6=) 14...Bd7 15.Nd2 (better is 15.Ne5=) 15...Bb4?? (better is 15...Bc6 16.bc6 Bb4–/+) 16.Nb4+– a5 (16...Bb5 17.h4 Qg6 18.Nd5 Nd5 19.Qd5+–) 17.ba6 Bb5 (17...0–0 18.a4+–) 18.h4 Qg6 19.Nd5 Bc6 (19...Nd5 20.Qd5 c6 21.Qe5 Kd8+–) 20.Nc7 Kd7 21.d5 Nd5 (21...Kc7 22.dc6 Qg4 23.Bf6 Qf3 24.Be5 Kc6 25.gf3+–) 22.Nd5 Ra6 23.0–0 Qe6 24.e4 g6 25.Bh8 Bb5 26.Rfc1 Ra4 27.Nc7 Qe7 28.Nb5 Qh4 29.Qf7 Kd8 30.Rc8! Kc8 31.Qc7# 1–0. marus1 – tide69, internet, 2001.

6.Nf3 Be7 7.cd5 ed5 8.Nc3 =.

6.f4 Ne4 7.Nf3 Bb4 (better is 7...dc4!? 8.Bc4 a6=) 8.Bg7 Rg8 9.Bc3 (better is 9.Bd4 dc4 10.Qc2+/–) 9...Bb7?? (better is 9...Nc3 10.dc3 Qf6+=) 10.Bb4+– Qf6 (10...dc4 11.Rg1+–) 11.Nc3 Nc3 (11...dc4 12.Rc1 Nd6 13.Kf2+–) 12.Bc3 (worse is 12.dc3 dc4 13.Qc2 a5+–) 12...Qf5 13.Qb1 (13.Nd4!? Qe4 14.cd5 Qd5+–) 13...Qb1 14.Rb1 0–0–0 (14...dc4 15.Kf2+–) 15.Ne5 (15.Ng5 dc4 16.Nf7 Rde8+–) 15...Rgf8 (15...Ne5 16.Be5 dc4 17.Rg1+– (worse is 17.Bc4 Rg2 18.d4 c5+–)) 16.Nd7 Rd7 17.cd5 ed5 (17...Bd5 18.Rb4+–) 18.Bd4 Rdd8 (18...c5 19.bc6! Bc6 20.Rc1+–) 19.Be2 Kb8 20.Rc1 Rc8 21.Rc2 Rg8 22.Kf2 Rge8 23.Rhc1 Re7 24.Be5 Ka8 25.Rc7 Rec7 26.Rc7 Kb8 27.Rc8 Kc8 28.Bd3 Kd8 29.Bh7 Bc8 30.h3 Bd7 31.a4 Bc8 32.g4 a6 33.Bf5 Bb7 34.d4 ab5 35.ab5 Bc8 36.Bc8 Kc8 37.h4 Kd7 38.h5 Ke7 39.h6 Kd7 40.h7 Ke7 41.h8Q (41.h8Q f6 42.Bf6 Ke6 43.Qg7 Kd6 44.Qe7#) 1–0. Djakov,Joao – Primeau,Sylvain, Internet Section, 2004.

5.c4 Be7

6.cd5= ed5 7.Nf3 (7.Qc2 a6=) 7...Bb7 (7...a6 8.Qc2+=) 8.Nd4= 0–0 9.Bd3 (9.Nf5 c5+=) 9...a6 10.a4 ab5 (10...Qe8 11.0–0=) 11.ab5 c5 (11...Ra1 12.Ba1 Ne4 13.Qc2=) 12.bc6+= Nc6 (12...Bc6 13.Nc6 Nc6 14.Bf6 Bf6 15.Ra8 Qa8 16.Qh5+/–) 13.Ra8 Qa8 14.Nf5 Re8 (14...Qd8 15.Ng7 Nb4 16.Bf5+/–) 15.Ne7 Ne7 16.Bf6 gf6 17.Qg4 Ng6 18.0–0 d4 19.Rc1 de3 20.fe3 Kg7 (20...Be4 21.Be4 Qe4 22.Qe4 Re4 23.Nc3+/–) 21.Rc7 (21.Rc4 Bd5 22.Rb4 Re5+/–) 21...Re5 22.Bc4 Bd5 23.Nc3 (23.Bd5 Qd5 24.Qc4 Qc4 25.Rc4 Rb5+=) 23...Qa1+= 24.Qd1 Qd1 25.Nd1 Bc4 26.Rc4 Rb5 (26...Ra5 27.Kf1+=) 27.Kf2 Ne5 28.Rc8 Ng4 29.Kg3 Ne5 30.d4+/– Nd3 31.Kf3 f5 32.Rc3 Nb2 33.Nf2 h5 34.h4 Rb4 35.Nh1 Kg6 36.Ng3 Nc4 37.Kf4 b5 38.Nf5 f6 39.e4 Rb2 40.Rg3 Kf7 41.Rg7 Kf8 42.Rb7 Rg2 43.Rb5 Rg4 44.Kf3 Ke8 45.Rb8 Kd7 46.Rb7 Kd8 47.Rg7 Nd2+= 48.Ke3 Re4 49.Kd2 Rf4 50.Ng3 Rd4 51.Ke3 Rh4 52.Rh7 Attacks the isolani on h5 52...Rg4 53.Kf3 Rb4 54.Nh5 Rh4 55.Kg3 Ra4 (55...Rh1 56.Kf4+/–) 1–0. Zedtler,Uwe – Nittschalk,Karl, DESC, 1999.

6.Nf3 0–0 7.Qc2 h6 (7...Nbd7) 8.Be2 Nbd7 9.d4 Bb7 (9...Bb4!?) 10.0–0 a5 11.a4 Rc8 12.Nbd2 Ne4 13.Ne4 de4 14.Nd2 f5 15.f3 Nf6 16.h3 Bd6 17.f4 c6 18.c5? (18.bc6!? Bc6 19.Ba3 g6 20.Bd6 Qd6) 18...cb5 19.Bb5 bc5 20.Qb3 Bd5 21.Bc4 Rb8 22.Qc2 Bc4 23.Nc4 Nd5 24.Nd6? Qd6 25.dc5 Qc6 26.Rab1 Rf7 (26...Ne3!) 27.Rfe1 (27.Bd4) 27...Nb4 (27...Rfb7) 28.Qc4 Nd3 29.Re2 Rfb7 30.Qd4 Nc5 31.Rc2 Rc8 (31...Nb3) 32.Rbc1 Qd5 33.Rc5 Rc5 34.Rc5 Qd4 35.Bd4 Rd7 36.Ra5 g5 37.Ra8 Kf7 38.Ra7 Ke8 39.Rd7 Kd7 40.g3 g4 41.h4 h5 42.Kf2 Kc6 43.a5 Kb5 44.Bb6 Kc6 45.Ke2 Kb5 46.Kd2 Kc6 47.Kc3 Kb7 48.Kc4 Kc6 49.Kb4 e5 50.Kc4 ef4 51.ef4 Kb7 52.Kd5 e3 53.Be3 Ka6 54.Ke5 Ka5 55.Kf5 Kb5 56.Kg5 Kc6 57.Kh5 Kd5 58.Kg4 1–0. Dopper – Verkerk, 1990 (Dopper).

5.Nf3 c5

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 b6).

6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 b6).

5.Nf3 c6

6.Nc3 Bd7 7.Be2 a6 8.ba6 Na6 9.0–0 c5 (better is 9...Bd6!?=+) 10.Ne5 c4 11.Nd7 Qd7 12.d3 b5 13.dc4 bc4 14.e4 d4 15.Nb1 e5 (15...c3!? 16.Bc1 Ne4=) 16.Bc4+= Ne4? (16...Qb7 17.Bc1 Nc7 18.f4+=) 17.Qf3 (better is 17.Qe2 Qb7 18.f3 Qb2 19.Qe4+–) 17...Nf6?? (better is 17...f5+=) 18.Qa8+– Ke7 19.Ba3 Nb4 20.Bb4 (20...Qd6 21.Bd6 Kd6 22.Qb8 Kc6 23.Nc3 d3 24.Bb5 Kc5 25.Qc7 Kb4 26.a3) 1–0. revrevrevrev – PROBALLS, Live Game Caissa's Web, 2004.

6.c4 dc4 7.Bc4 cb5 8.Bb5 Bd7 9.Bd7 Nbd7 (worse is 9...Kd7 10.Qa4 Kc8 11.0–0+/–) 10.0–0 Be7 11.Ne5 Ne5 12.Be5 0–0 13.d3 Nd5 14.Bb2 (14.d4 Rc8=) 14...Bf6 15.Bf6 Qf6 16.Nd2 Rac8 17.Ne4 Qe7 18.Qd2 a5 19.Rfc1 Rc7 20.Rc7 Nc7 21.d4 a4 22.Qd3 g6 23.Qb5?? (better is 23.Nc3+=) 23...Nb5–+ 0–1. Valpa – Leroy43, playchess.de, 2002.

6.bc6 Nc6 7.d4 a5 8.Bb5 Bd7 9.0–0 g6 10.a4 Bg7 11.Ne5 Ne5 12.de5 Bb5 13.ef6 Bf6 14.ab5 Bb2 15.Ra2 Bg7 16.Nd2 0–0 17.Nf3 Qd6 18.e4 e5 19.ed5 Qb4 20.Qe2 Rad8 21.c4 f6 22.Rb2 Qe7 23.Rd2 h6 24.Rfd1 g5 25.d6 Qb7 26.d7 Qb8 27.Rd6 g4 28.Nh4 Rc8 29.dc8Q Qc8 30.Ng6 Rf7 31.Rd8 Qd8 32.Rd8 Kh7 33.Qd3 f5 34.Nh4 e4 35.Qd5 a4 36.Nf5 Kg6 37.Rd6 Rf6 38.Ne7 Kh7 39.Qg8# 1–0. guest845 – guest306, ICC, 1999.

6.Ne5 Bd7 7.Nd7 Qd7 8.c4 Ne4 9.cd5 Qd5 10.f3 Ng5 11.Nc3 Qf5 12.h4 Bd6 13.hg5 Bg3 14.Ke2 a6 15.bc6 Nc6 16.Qa4 b5 17.d3 (17.Qe4 Kd7+–) 17...Rd8 (better is 17...ba4 18.Ne4 Be5–+) 18.Qe4+– Ne7 19.f4 e5 (19...h5 20.Qf5 Nf5 21.Ne4+–) 20.Kf3 f6 (20...b4 21.Kg3 bc3 22.Bc3 ef4 23.ef4 0–0+–) 21.gf6 Qf6 22.Kg3 Nf5 23.Kf2 Rf8 (23...0–0 24.Qe5 Qg6 25.Ne4+–) 24.Rh7 1–0. Pleschke,Helmut – Keelan,Martin_J, TGT, 1998. Also known as "Rajkovic,Danilo – Klein,Heinz, Beijing, 1998" in some sources. What is correct? (MT)

5.Nf3 Bd7

6.a4 c6 7.c4 cb5 8.ab5 a6 (8...a5!?+/–) 9.cd5+– Nd5 10.Nc3 Nc7 11.Ne5 Bb4? (better is 11...Be7+–) 12.Qg4 0–0 (12...Bf8+–) 13.Qb4 Bc8 14.Qe4 Nd7 15.Nc6 Qe8 (15...Nc5 16.Qd4 Qd4 17.ed4+–) 16.Qd4 Bb7 (16...a5 17.Nd5! e5 18.Ne5+–) 17.Nd5! ed5 (17...Nd5 18.Qg7; 17...ed5 18.Qg7) 18.Qg7 1–0. pierred (2850) – preethan (2135), net–chess.com, 2015.

6.Be2 Be7 7.0–0 0–0 8.a4 c6 9.Ne5 Ne4 (9...Qc7 10.f4=) 10.Nc3 Nc3 11.Bc3 Bf6 (11...Be8 12.Nf3=) 12.Bd3+= Qc7 13.f4 (13.Nc6 Bc6 14.Bf6 gf6+=) 13...c5 14.Bh7 Kh7 15.Qh5 Kg8 16.Rf3 Be5 17.Be5 Qd8 18.Bg7! Kg7 (18...Kg7 19.Qg4) 19.Rg3 Kf6 (19...Qg5 20.Qg5 Kh7 21.Qg7) 20.Qg5 1–0. pcmvr (2100) – debutler (2100), net–chess.com, 2006.

5.c4 Bb7

6.cd5 Nd5 7.e4 Nf6 =+.

6.Nf3

6.Nf3 (--> 5.Nf3 Bb7 6.c4).

6.Nf3 Be7 7.Be2 0–0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0–0 7.Be2 d5).

5.c4 Bd6

6.Qf3 Nbd7 =.

6.Nf3 a6 7.Be5 +=.

6.Nf3 Bb7

7.d4 a6 8.Ba3 +=.

7.d4 c6 8.Bd3 (8.cd5 Nd5 9.Nc3 Bb4=) 8...0–0 (8...dc4 9.Bc4 a6 10.a4+=) 9.Nbd2 dc4 10.Nc4 (10.bc6 Nc6 (10...cd3?? 11.cb7 Na6 12.ba8R Qa8 13.a3+–; 10...Bc6?! 11.Nc4 Bb4 12.Ncd2=) 11.Nc4 Nb4+=) 10...Bb4 11.Ncd2 cb5 12.Bb5 Na6 (12...Ne4!?+=) 13.0–0= Bd2 (better is 13...Nc7 14.Bd3 Rc8=) 14.Nd2?? (better is 14.Qd2 Nc7 15.Be2=) 14...Qd5–+ Threatening mate: Qxg2 15.Qf3 Qb5 16.Qb7 Qb2 (16...Nd5 17.Rfd1 Nac7 18.a4 Qb2 19.Nc4–+) 17.Qa6 (17.Nc4 Qb5 18.Ne5 Qa4–+) 17...Qd2 18.Rfd1 Qb4 19.Rac1 Qe7 20.Rc6 h6 21.Rdc1 Nd5 22.a3 Qf6 23.e4 Qd4 24.ed5 Qd5 25.Kf1 Kh7 26.Ke2? Rfd8 27.R1c2?? Qe4 (27...Qe4 28.Kf1 Rd1#) 0–1. Trkn – Prozac Prodigy, itsyourturn.com, 2000.

7.cd5 ed5 8.Nc3 0–0 =.

7.cd5 ed5 8.Nd4 Bc8 =.

7.cd5 ed5 8.Be2 c6 (8...a6 9.Nc3+=) 9.0–0 0–0 10.Nd4 (10.Nc3 c5=) 10...a6 11.bc6 Nc6 12.Nc6 (12.Nf5 b5=) 12...Bc6+= 13.Qc2 (better is 13.Bd4+=) 13...Qc7 (better is 13...Rc8!?+=) 14.Bf6+= gf6 15.Rc1 Bh2 16.Kh1 Rfc8 17.Bg4 (better is 17.Qc6 Qc6 18.Rc6 Rc6 19.Kh2+=) 17...Qd6?? (better is 17...Bb7 18.Bc8 Rc8+/–) 18.Bc8+– Rc8 19.Qf5 Qb8? (19...Rc7 20.Qh5 Be5+–) 20.f4 Bf4 (20...Bd7 21.Rc8 (21.Qd7?! Rc1 22.Kh2 Qf8+–) 21...Qc8 22.Qf6 Bf4 23.ef4 Qc1 24.Kh2+–) 21.ef4 d4 22.Na3 Qa8 23.Qf6 Bg2 24.Kh2 Rc1 25.Rc1 Be4 26.f5 Qb8 27.Kh3 Bf5 28.Qf5 Qd6 29.Qg5 Qg6 30.Qd8 Kg7 31.Qd4 Kh6 32.Qe3 Kh5 33.Qf3 Kh6 34.Rc6 f5 35.Rg6 hg6 36.Qe3 Kg7 37.d4 Kf6 38.d5 g5 39.Qe6 Kg7 40.d6 g4 41.Kh4 f4 42.d7 g3 43.d8Q f3 44.Qdg8# 1–0. Bonetti,Shane – qsac (2255), ICC, 2002.

5.Nf3 a6

6.a4 a5 7.Be2 Bb4 8.c3 Bc5 9.0–0 Nbd7 10.d3 e5 11.d4 Bd6 12.de5 Ne5 13.Nd4 Bc5 14.Nc6 Nc6 15.bc6 Qd6 16.Bb5 (16.c4 0–0=) 16...Ba6 (better is 16...Ng4!? 17.g3 0–0=+) 17.Nd2 0–0 18.Nb3 (18.c4 Rfd8+=) 18...Bc8 (18...Qe5!?=) 19.Nc5 bc5 20.c4 Ng4 21.g3 Nf6 (21...Qh6 22.h4 dc4 23.Qc2+=) 22.Qc2 Bh3 23.Rfd1 d4 24.ed4 cd4 25.Bd4 (25.Ba3 Qe5 26.Bf8 Rf8+/–) 25...Qe6 (25...Bg4 26.Rd2+=) 26.c5 (26.Re1 Qg4 27.Qc3 Ne8+/–) 26...Qe4 (better is 26...Rfe8+=) 27.Bf1?? (better is 27.Qe4 Ne4 28.Be5+/–) 27...Qc2–+ 28.Bh3 Rad8 29.Rdc1 Qg6 (29...Rd4?! 30.Rc2 Rb8 31.Re2=) 30.Be3 Ng4 (30...Nd5 31.Bd2–+) 31.Bg4 (31.Bf4 f5 32.Bc7 Rd2–+ (< 32...Qc6 33.Bd8 Rd8 34.Bg2–+)) 31...Qg4 32.Rf1 (32.Bf4 Rc8–+) 32...Qf3 33.Ra2 (33.Rab1 Rd3 34.Bf4 Qc6–+) 33...Rfe8 34.Rc2 h5 35.h4 (35.Rc4 Rd1 36.Rf4 Rf1 37.Kf1 Qd1 38.Kg2 Qd5 39.Kh3 g5–+) 35...f5 (better is 35...Re3 36.Kh2–+) 36.Bg5 (36.Rd2 Qc6 37.Rd8 Rd8–+) 36...Rd5 37.Rcc1 f4 (better is 37...Rd4 38.Ra1–+) 38.Bf4 Rf5 39.Rc4 (39.Bc7 Re2 40.Bf4 Rf4–+) 39...Rf4 (better is 39...Qc6 40.Rfc1–+) 40.Rf4 Qc6 41.Rd1 Qa4 (better is 41...Qc5 42.Rfd4 Re2–+) 42.Ra4+– Re1 (42...Ra8+–) 43.Re1 c6 44.Ra5 Kf7 45.Ra7 (45...Kf6 46.Ra6 Kf7 47.Rc6 Kg8 48.Re8 Kf7 49.Rb8 Ke7 50.Rb7 Kd8 51.Rg7 Ke8 52.Rc8; 45.Ra6 Kg6 46.Rc6 Kf7 47.Ra1 Kf8 48.Ra8 Kf7 49.Rb8 Ke7 50.Rb7 Kd8 51.Rg7 Ke8 52.Rc8) 1–0. OPA – PROBALLS, Live Game Caissa's Web, 2004.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.d4 Bb4 10.Bc3 Be7 11.Nbd2 Bb7 12.Bd3 0–0 13.0–0 Ne4 14.Bb2 c5 15.bc6 Bc6 16.Qe2 b5 17.Bb5 Nd2 18.Nd2 (worse is 18.Bc6 Nf1 19.Kf1 Qb6 20.Bd7 Qb2–+) 18...Bb5 19.Qb5 Qc7 20.Qd3 Rb8 21.Rb1 Bd6 22.g3 Rc8 23.c3 Nb6 24.Ra1 Rb8 25.Ra6 e5 26.Ba3 Ba3 27.Ra3 e4 28.Qa6 g6 29.Rb3 Kg7 30.Qa5 Qd8? (better is 30...h5+/–) 31.Qa7+– Nd7 32.Rb8 Nb8 33.c4 dc4 34.Nc4 Nd7 35.d5 Kg8 36.d6 f5 37.Qc7 Qe8 38.Kg2 Kf8 39.Na5 1–0. marektheim – chin4ever, internet, 2015.

6.a4 Bb7 7.Be2 Bd6 8.Nd4 Bc8 9.f4 Bb7 10.0–0 0–0 11.Qe1 ab5 12.ab5 Ra1 13.Ba1 Nbd7 14.d3 Qe7 15.Nd2 Bb4 16.c3 Bc5 17.c4 Ra8 18.Bc3 Bb4 19.Qc1 g6 20.Bf3 Bc3 21.Qc3 Ra3 22.N4b3 e5 23.fe5 Ne5 24.cd5 Nf3 25.Rf3 Nd5 26.Qd4 Nc3 27.Qc3 Bf3 28.gf3 Qe3 29.Kf1 Qf4 30.h4 Ra7 31.Qd4 Ra4 32.Qf4 (32.Qd7!?=) 32...Rf4+= 33.Ne4 Rh4 (33...Rf3 34.Ke2 Rf4 35.Ke3 Rh4 36.Nf6 Kf8 37.Nd5–/+) 34.Kg2 f5 35.Kg3 Rh1 (worse is 35...fe4 36.Kh4 ed3 37.Kg3+=) 36.Nc3 Kf7 37.Kg2 Rh4 38.Nd5 Ra4 39.Nc1 Ra7 40.Ne2 Ke6 41.Nb4 Kd6 42.Nc2 c6 43.Nc3 Ra5 44.bc6 Kc6 45.Kf2 Kd7 46.d4 g5 47.f4 h6 48.Kf3 g4 49.Kg3 Kc6 50.Nb4 Kd6 51.Nc2 Ke6 52.Kh4 Kf6 (52...b5 53.d5 Kd7 54.Ne2–/+) 53.Kg3 (53.Kh5!?+=) 53...Kf7–/+ 54.Kh4 Kg6 55.Kg3 ½–½. Subedei – marekt, ChessWorld.net, 2013. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 b6 5.e3 a6)

6.a4 Bd6 7.Be2 Nbd7 8.Nc3 0–0 9.0–0 Bb7 10.Nd4 ab5 11.ab5 Qe7 12.f4 Ra1 13.Qa1 Ra8 14.Qe1 Bc5 15.Qf2 Ne8 16.Bd3 Bd4 17.ed4 Ndf6 18.Qe2 Nd6 19.Ra1 (19.f5 Nfe4 20.fe6 Qe6=) 19...Ra1 20.Ba1 Nfe4 21.g3 (21.Qe3 Qh4 22.Ne4 de4=) 21...Qd8 22.Qe1 Qa8 23.Bb2 Qa5 24.Be2 Qb4 25.Ne4 de4 26.Bc3 Qa4 27.Qb1 Bd5 28.Kf2 Bc4 29.Qb4 Bb5 30.Qa4 Ba4 31.Bd1 Nf5 32.Bg4 (better is 32.Bb2!?–/+) 32...Bc2–+ 33.Bf5 ef5 34.Bb4 c6 35.Bd6 f6 36.Ke3 Kf7 37.Bc7 b5 38.Bd6 Ke6 39.Bf8 g6 40.h4 Kd5 41.Be7 Kc4 42.Bf6 b4 43.Be7 Bd3 44.Bf8 Bf1 45.Be7 Kb5 46.Kf2 Bc4 47.Ke1 Ka4 48.Kd1 Bb3 49.Kc1 Kb5 50.Bd6 (50.Kb2 Bd5–+) 50...Bd5 51.Kd1 (51.Bc5 Kc4–+) 51...Kc4 52.Ke2 b3 53.Ba3 Kd4 54.Bb2 Kc4 55.Bf6 c5 56.Bg7 Kb4 57.Kd1 (57.Bb2 Bc4 58.Ke3 Bd3–+) 57...Bc6 (57...Ka3 58.Kc1–+) 58.Bc3 Kc4 59.Ke2 Kb5 60.Kd1 Bd5 61.Bg7 Bf7 62.Bb2 Kc4 63.Ke2 Be8 64.Bg7 Kd5 65.Ke1 Bb5 66.Kf2 Kc4 67.Ke3 Kb4 68.Bb2 Bf1 69.Kf2 Kc4 70.Ke3 Kd5 71.Kf2 Bd3 72.Ke1 Kc4 73.Kf2 Kb5 74.Ke3 Kb4 75.Kf2 Kc4 76.Ke3 Bf1 77.Bh8 Kd5 78.Kf2 Bh3 79.Ke3 c4 80.Bd4 Bf1 81.Be5 Bg2 82.Bd4 Bf3 83.Bb2 ½–½. pierred (2850) – pcmvr, net–chess.com, 2016.

6.a4 Be7 7.Be2 0–0 8.0–0 a5 (8...c5 9.Be5=) 9.d3 c5 10.Nbd2 Nbd7 11.e4 (11.Ne5 Ne5 12.Be5 Nd7=) 11...Bb7 12.e5 Ne8 13.d4 c4 14.Re1 Rc8 15.c3 Qc7 16.Qc2 f6 17.ef6 Rf6 (17...Ndf6 18.Ng5 Bd6 19.Ne6 Bh2 20.Kh1+–; 17...gf6 18.Ba3 Ba3 19.Ra3=) 18.g3 (18.Ba3 Nd6=) 18...Nd6=+ 19.Ne5 Nf8 (19...Rcf8 20.Bg4=+) 20.Bf1 Re8 21.Bg2 Bc8 22.Bc1 Nf7 23.Ndf3 h6 (23...Ne5 24.Ne5 Ng6 25.Nc6+=) 24.Nf7 Rf7 25.Ne5 Rf6 26.Nc6 (26.Ng4 Rg6 27.Bf4+/–) 26...Bd6? (better is 26...Ng6+=) 27.Bd5!+– ed5 28.Re8 Bd7 (28...Bg4 29.Ne5 Bh5 30.Ra8 Be5 31.de5 Qe5 32.Be3+–) 29.Ne7 Be7 30.Re7 Ng6 31.Re1 Bf5 (Black gets in control) 32.Qd2 Qd7 33.Ba3 (33.f3 Qf7+–) 33...Be4 34.Re4 (34.Re3!?+–) 34...de4+/– 35.d5?? (better is 35.Qe2 Qd5 36.Re1+=) 35...Ne5–/+ 36.Qd1 (better is 36.Qe2!? Nf3 37.Kg2 Qd5 38.Rd1=+) 36...Nd3 (36...Qh3 37.f4 Nf3 38.Kf2 Qh2 39.Ke3 Qg3–+) 37.Ra2 (37.Qh5 Rf2 38.Rf1 e3 39.Rf2 ef2 40.Kf1 Kh7=+) ½–½. Cerny,Thorsten – Lahn,Horst, Schleswig Holstein–ch, 1991.

6.c4 ab5 7.cb5 Bd6 8.a4 0–0 9.Bd3 Nbd7 10.Nc3 e5 11.0–0?? (better is 11.Be2+=) 11...e4–+ 12.Ne4 (12.Nd5 ed3 13.Nf4–+) 12...de4 (12...de4 13.Be2 ef3 14.Bf3 Ra7–+) 0–1. preethan (2135) – pcmvr, net–chess.com, 2015.

6.Ne5 Bd6 =.

6.Ne5 Nbd7?? 7.Nc6+– 1–0. Couspeyre,Thierry – Lombardi,Donato, OP–2012–0–02269, 2012.

5.Nf3 Bb7

6.Na3 Nbd7 7.c4 Bc5 8.Rc1 Qe7 9.Nc2 0–0 10.Ncd4 Ba3 11.Qb3 Bb2 12.Qb2 Nc5 13.Ne5 Nfe4 14.Ndc6 Qf6 15.d4 Na4 16.Qc2 a6?? (better is 16...Bc6 17.bc6 Rfe8+/–) 17.Nd7+– (17.Qa4?? Qf2 18.Kd1 Qd2) 17...Qg6 (17...Qh4 18.g3 Qh6 19.Ne7 Kh8 20.ba6 Ba6 21.Nf8 Qf6 22.cd5 Nac3+–) 18.Ne7 Kh8 19.Ng6 fg6 20.Nf8 Rf8 21.ba6 Ba6 22.Qa4 dc4 1–0. Leon Manas,JF (1720) – Biscarri Candalia,O, Gran Canaria ESP, 3rd Mendoz Mem, 2011.

6.a4 a6 7.Be2 Bd6 8.Nc3 0–0 9.0–0 e5 =+.

6.a4 c5 7.Be2 Bd6 8.Be5 0–0 9.0–0 a6 =.

6.a4 c6 7.a5 ba5 8.Be2 a6 9.bc6 Nc6 =+.

6.a4 Bd6 7.Be2 0–0 8.0–0 a6 9.d4 c6 =.

6.Nc3 a6 7.Bd3 Bd6 8.0–0 0–0 9.a4 e5 =+.

6.Nc3 c5 7.Be2 Nbd7 8.0–0 Bd6 9.h3 0–0 0–1. Valverde,Mario (1910) – Mangold,Wagner (2205), CiF–4er/0202, 2011.

6.Nc3 Bd6 7.Bd3 a6 8.0–0 0–0 9.a4 c6 =.

6.c4 a5 7.a4 Nbd7 8.Be2 h6 9.0–0 g6 10.Qc2 g5 11.d4 g4 12.Ne1 h5 13.f4 Bd6 14.Nd3 Rc8? (better is 14...Qe7+=) 15.c5+– bc5 16.dc5 h4 17.c6 Ba8 18.cd7 Kd7 19.Ne5 Be5 20.Be5 Rh6 21.Qc3 g3 22.h3 c6 23.Qc5 Ne4 24.Qa7 Rc7 (24...Ke8 25.b6 Qd7 26.Qa5+–) 25.Qc7 (better is 25.Bc7 Qc7 26.Qa8+–) 25...Qc7 26.Bc7 Kc7 27.bc6 Kc6 28.Rc1 Kd7 29.Nc3 Nd2 30.Nb5 Nb3 (30...Bc6 31.Nd4 Bb7+–) 31.Rc7 Ke8 (31...Kd8 32.Rb1 Nd2+–) 32.Rb1 e5 33.Rb3 Kd8 34.Rbc3 (34.Rbc3 ef4 35.Rc8 Ke7 36.Ra8 fe3 37.Ra5+–) 1–0. Dessing,Bastiaan – Rink,Tycho, Hengelo U14 open, 2002.

6.c4 c5 7.Be2 Bd6 8.0–0 0–0 9.a4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0–0 8.0–0 b6 9.a4 Bb7).

6.d3 Bd6 7.c4 a6 8.Nc3 0–0 9.a4 Nbd7 10.cd5 ed5 (10...Nd5!? 11.Nd5 Bd5–/+) 11.Be2+= ab5 12.Nb5 Be7 13.0–0 c6 14.Nbd4 Bd6 15.Nf5 Bc7 16.Rc1 Nc5 17.Ng5? (better is 17.Ne5!?=) 17...Na4–/+ 18.Qc2 (18.Bd4!?–/+) 18...Nb2 19.Qb2 c5 20.Bf3 (20.Ra1!?–+) 20...h6 21.Nh3 Qd7 (21...Bc8!? 22.Ng3–+) 22.Nh6 Kh7 23.Nf7 Rf7 24.Ng5 Kg8 25.Nf7 Qf7 (25...Kf7 26.h4–+) 26.Ra1–/+ Ra1 27.Ra1 Bc6 28.Ra7?? (better is 28.h4–/+) 28...Bh2!–+ 29.Kh2 Qa7 30.d4 (30.Qe5 Kf7–+) 30...c4 31.g4 Qc7 32.Kg2 b5 33.g5 (33.Qa3 Qd7–+) 33...Ne4 34.g6 (34.Be4 de4 35.Qc3 Bd5–+) 34...Qa5 (better is 34...Qd6!? 35.Be4 de4 36.Kf1–+) 35.Be4 de4 36.d5 (36.Qe2 Qd8 37.Qh5 Qf6–+) 36...Bd5 37.Qd4 (37.Qe5 Qd8 38.Qh5 c3 39.Qh7 Kf8 40.Qh8 Bg8–+) 37...Qd8 (37...b4 38.Qe5 Qd8 39.Qh5–+) 38.Qe5 (38.Kf1 b4 39.Ke2 Kh8–+) 38...b4 39.Qh5 b3 (39...Qd6 40.Qh7 Kf8 41.Qh8 Bg8 42.Qh5–+) 40.Qh7 (40.Qe5 c3! 41.Qc3 Be6–+) 40...Kf8 41.Qh8 Bg8 42.Qh5 Bd5 (42...Qd5!? 43.Qh3 Ke7 44.Qc8–+) 43.Qf5?? (43.Qh8 Ke7 44.Qg7 Kd6 45.Kf1–+) 43...Kg8–+ 44.Kg3 (44.Qe5–+) 44...Qd6 45.Kh4 Qf6 46.Kg3 (46.Qg5 b2 47.Qf6 gf6 48.Kg3 b1Q 49.Kg2 c3 50.g7 c2 51.Kh2 c1Q 52.Kh3 Qh1 53.Kg4 Qf3 54.Kh4 Qbh1) 46...Qf5 0–1. preethan (2135) – cristero (2460), net–chess.com, 2015.

6.Bd3 a6 7.Nc3 Bd6 8.0–0 0–0 9.a4 e5 =+.

6.Bd3 Bd6 7.Nc3 a6 8.0–0 0–0 9.a4 c6 =.

6.Bd3 Nbd7 7.Nc3 Nc5 8.0–0 Nd3 9.cd3 Bd6 10.Ne2 0–0 11.Be5 Rc8 (11...a6 12.a4=) 12.Qa4 Ra8 13.Qf4 Be5 14.Qe5 c5 15.bc6 Bc6 16.Ned4 Bd7 17.Rfc1 Rc8 18.Qd6 Ba4 (18...Rc5!?+/–) 19.Qa3 Qd7 (19...Bd7 20.Ne5 Rc1 21.Rc1+/–) 20.Ne5+– Rc1 21.Rc1 Qe8 22.f4 b5 (22...a5 23.Rc7+–) 23.Rc7 Qb8 (23...a5 24.Qc5 h6 25.Qa7+–) 24.Qc5 a6 (24...Qb6 25.Qe7 b4 26.Ra7 Be8+–) 25.Nf7! b4 (25...Rf7 26.Rc8 Double attack) 26.Ne5 b3 (26...Re8+–) 27.ab3 Bb3 (27...Re8 28.ba4 h6+–) 28.Ne6 d4 29.Rg7 Kh8 30.Ng6! hg6 31.Qg5 (31.Nf8?! Kg7 32.Qe7 Kg8 33.Qf6 Qf8 34.Qg6 Qg7 35.Qa6 Qc7+–) 31...Be6 (31...Qf4 32.ef4 Nh7 33.Qg6 Ng5 34.Rh7 Nh7 35.Qg7 mate) 32.Qh6 (32.Qh6 Nh7 33.Qh7 mate) 1–0. pierre – thlaxa, internet Microsoft, 2012.

6.Bd3 Be7 7.Nc3 a6 8.a4 0–0 9.0–0 c5 =.

6.d4 a6 7.Ba3 =.

6.d4 Ne4 7.a3 Be7 8.Bd3 Nf6 9.Nbd2 0–0 10.0–0 Bd6 11.Re1 c6 12.a4 Qc7 13.Ba3 Re8 14.c4 Nbd7 15.Qb3 (15.Bd6 Qd6 16.cd5 ed5 17.bc6 Bc6+=) 15...Ng4 (15...c5!?=) 16.Bd6+/– Qd6 17.Rac1 Rac8 18.Qb2 e5 (18...Ngf6 19.e4 de4 20.Ne4+=) 19.de5 (better is 19.Bf5!? e4 20.Bg4 ef3 21.Nf3+–) 19...Nde5 20.Ne5 Ne5 21.Be2 c5 22.Nf3 (22.cd5 Qd5 23.e4 Qe6=) 22...Qf6 (22...Nc4 23.Bc4 dc4 24.Rc4 Bf3 25.gf3+=) 23.Ne5= Re5 24.Bf3 Rd8 25.Red1 Qe7 26.Rd2 Qg5 (26...f5 27.a5+=) 27.cd5 (27.Bd5 Red5 28.cd5 (28.Rd5?! Bd5 29.cd5 Qd5=) 28...Bd5 29.f4+–) 27...Bd5+= 28.Rcd1 Rf5?? (better is 28...Rd7 29.g3 Qf5+=) 29.Qb3 c4 (29...Qh4 30.g3 (30.Bd5?! Rdd5 31.g3 Rd2 32.gh4 Rff2 33.Rd2 Rd2+–) 30...Qf6 31.Bd5+–) 30.Qc4 Rf3 (30...Qe7 31.Bd5 Kf8+–) 31.Rd5 Qe7 32.Rd8 (32.Rd8 Qf8 33.Rf8 Kf8 34.Qb4 Ke8 35.Qe4 Kf8 36.Rd8) 1–0. Fournier,Frederic – Serriere,Claude, Ch Club, 1995.

6.Be2 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 d5).

6.Be5 a6 7.Nc3 Nbd7 8.ba6 Ba6 9.Ba6 Ra6 =.

6.Be5 c6 7.Nc3 a6 8.ba6 Ba6 9.Ba6 Ra6 =.

6.Be5 Nbd7 7.Bf4 a6 8.Nc3 Ne4 9.Ne4 de4 =+.

6.Be5 Be7 7.Nc3 Nbd7 8.Bg3 0–0 9.Nd4 Bb4 =+.

6.c4 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 Bd6 10.Nc3 (10.cd5 Bd5 11.Nc3 c5 12.Nd5=) 10...dc4 (10...0–0 11.d4 c6 12.cd5=) 11.Bc4 0–0 12.d4 Qe7 13.0–0 c5 14.bc6 Nc6 15.Qe2 Na5 16.Ba6 Bf3 17.Qf3 Bh2? (better is 17...Nb3 18.Qc6 Qa7 19.Qd6 Qa6=) 18.Kh2+– Qd6 (better is 18...Nb3 19.Qe2 Na1+–) 19.Kg1 1–0. Welti,Manfred (2090) – Garat,Jacques/Ruimy,Michel (2190), corr Coppa Latina–6 bd09, 2003.

7.a4 ab5 8.ab5 Nbd7 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 Nf6 12.Ra8 Qa8 13.Be2 Be7 14.0–0 0–0 15.Qa1 Qa1 16.Ra1 Ne4 17.Ra7 Nc3 18.dc3 Rb8 19.Ne5 Bd6 20.Nd7 Rd8 21.Rb7 Rd7 22.Rb8 Bf8 23.Rc8 g6 24.g3 Kg7 25.Kg2 Rd2 26.Kf3 Bd6 ½–½. Pruvost,A (1620) – Daniel,A (1860), 9th Open, La Fere FRA, 2010.

7.a4 dc4 8.Bc4 A) 8...c6 A1) 9.0–0 A11) 9...Bd6 10.d3 0–0 (10...ab5 11.ab5 Ra1 12.Ba1 0–0=) 11.Nbd2 Nbd7 12.Qc2= Qc7=; A12) 9...Bb4 10.d3 0–0 11.Nc3 Qd6 12.Na2 cb5=; A2) 9.Nc3 A21) 9...Bb4 10.0–0 0–0 11.d3 Qd6 12.Na2 cb5=; A22) 9...Bd6 10.e4 Nbd7 11.0–0 (11.bc6 Bc6 12.Qe2= 0–0=) 11...Ne5 12.ba6 Ba6=; A23) 9...Qc7 10.bc6 Nc6 11.Rc1 Bd6 12.Ne2 e5=; A3) 9.d3 Bd6 10.0–0 ab5 11.ab5 Ra1 12.Ba1= 0–0=; B) 8...Bb4 9.0–0 B1) 9...0–0 10.Qe2 ab5 (10...c6 11.d3 c5 12.d4 ab5=) 11.ab5 Ra1 12.Ba1= Nbd7=; B2) 9...c6 10.d4 ab5 11.ab5 Ra1 12.Ba1 0–0=; C) 8...Bd6 C1) 9.0–0 ab5 (9...0–0 10.Nc3 c5 11.d3 Ng4 12.Ne4 Be4=; 9...c6 10.d3 ab5 11.ab5 Ra1 12.Ba1= 0–0=) 10.Bb5 c6 11.Be2 0–0 12.Na3 Bc7=; C2) 9.Nc3 0–0 (9...c6 10.e4 Nbd7 11.bc6 Bc6 12.Qe2 0–0=) 10.0–0 c6 11.Qe2 Qc7 12.e4= Ng4=; C3) 9.d3 0–0 (9...ab5 10.ab5 Ra1 11.Ba1 0–0 12.e4 Nbd7=) 10.0–0 C31) 10...c5 11.Nc3 (11.Nbd2 ab5 12.ab5 Ra1=) 11...Ng4 (11...Bc7 12.ba6= Na6=) 12.Ne4 Be4=; C32) 10...ab5 11.ab5 Ra1 12.Ba1 c5=.

7.a4 c6 A) 8.cd5 Nd5 9.Nc3 (9.Bc4 Bd6 10.e4 Nf4 11.0–0 0–0 12.d3= ab5=) 9...Nb4 (9...Nf6 10.Be2 Bd6 11.0–0 0–0 12.d4 Nbd7=) 10.d4 Be7 11.Bc4 Qc7 12.Qe2 cb5=; B) 8.Bd4 dc4 9.Bc4 Bd6 (9...ab5 10.ab5 Ra1 11.Ba1 Bd6 12.0–0 0–0=) 10.0–0 0–0 11.d3 c5 12.Bb2= ab5=; C) 8.Nc3 dc4 9.Bc4 Bd6 (9...Bb4 10.0–0 0–0 11.Qe2 Qd6 12.Na2 Ng4=; 9...Nbd7 10.0–0 Bd6 11.bc6 Bc6 12.d4 0–0=) 10.d3 0–0 11.0–0 Qc7 12.Qe2= Nbd7=.

7.a4 Bd6 8.cd5 A) 8...Bd5 9.Nc3 A1) 9...0–0 10.Nd5 Nd5 A11) 11.Bd3 Nb4 (11...Qd7 12.0–0= ab5=) 12.Be4 c6=; A12) 11.Bc4 c6 12.0–0 Qd7=; A2) 9...Bb7 10.d4 ab5 11.ab5 Ra1 12.Ba1 0–0=; B) 8...ed5 9.Be2 0–0 (9...c5 10.ba6 Ba6 11.Bf6 Qf6 12.Nc3 Be2=) 10.0–0 c5 11.Nc3 Re8 12.ba6 Na6=.

7.cd5 Bd5 8.Nc3 =.

7.cd5 Nd5 8.Nc3 =.

7.cd5 Nd5 8.e4 =+.

6.c4 Bb4

7.a3 Bc5 8.Bf6 Qf6 9.d4 Bd6 10.Nbd2 0–0 11.Be2 a6 12.a4 Nd7 13.0–0 ab5 14.cd5 Bd5 (14...ba4 15.Ne4 Qg6 16.Nd6 cd6 17.de6 fe6 18.Ra4=) 15.ab5 (better is 15.e4!? Bb7 16.e5 Ne5 17.de5 (17.Ne5?! Ra4 18.Ra4 ba4=) 17...Be5 18.Ne5 Qe5 19.Bf3+=) 15...Ra1 16.Qa1 e5 17.e4 Ra8 18.ed5? (better is 18.Qb2!? Be6 19.d5=) 18...Ra1–/+ 19.Ra1 ed4 20.Ne4 Qe7 21.Ra8 Nf8 22.Bd3 h6 23.g3 g5?? (better is 23...Bc5–+) 24.Nd4?? (better is 24.Re8 f5 25.Re7 Be7 26.Ned2+– (26.Nd4?! fe4 27.Be4 Nd7+–)) 24...Bc5?? (24...Qe5!? 25.Nc6 Qf5=) 25.Nf5 Qe5+= 26.Nh6 Kg7= 27.Ng4?? Qd5–+ 28.Rf8 Bf8 29.Bc2 Qb5 30.Ngf6 Qc4 0–1. orangutandu – judrit, internet, 2013.

7.Qb3 Ba5 8.Be2 0–0 9.0–0 dc4 10.Bc4 Bd5 11.d4 Nbd7 12.Nbd2 c5 13.bc6 Bc6 14.Be6 Rc8 15.Bc4 Qe7? 16.Ba3+– Qd8 17.Bf8 Qf8 18.Rfc1 Bb7 19.Rc2 h6 20.Rac1 Rd8 21.Bb5 a6 22.Be2 b5 23.a4 Ne4 24.ab5 Nd2 25.Nd2 Bd2 26.Rd2 ab5 27.Qb5 Ba8 28.Ra2 Qd6 29.Rca1 Bc6 30.Ra6 Rc8?? 31.Qa5 Nb8 32.Bf3 Na6 33.Qa6 Qd7? 34.Rc1 Bb7 35.Rc8 Bc8 36.Qc4 Qd8 37.Bd5 Bf5 38.Bf7 Kh8 39.h3 Qb8 40.Bd5 Qb1 41.Kh2 Qb8 42.g3 Kh7 43.e4 Bg6 44.e5 Qd8 45.Bf3 Qg5 46.Kg2 Qf5 47.Qe2 Qb1 48.d5 Bd3 49.Qe3 Qf1 50.Kh2 1–0. carocan (1740) – kami222 (1785), kurnik, 2011.

7.Be2 0–0 8.0–0 dc4 9.Bc4 c6 10.a4 cb5 11.ab5 Nbd7 (11...a5 12.d3=) 12.d4 Re8 13.Nc3 (better is 13.Nbd2+=) 13...e5? (better is 13...Bf3 14.gf3 Nd5+=) 14.Ne5 (14.Ng5!? Re7 15.Nf7 Qc7 16.Ne5 Kh8+–) 14...Ne5+/– 15.de5 Qd1 16.Nd1 (16.Rfd1 Rec8+–) 16...Nd7 (16...Ne4 17.Ra4 Ba5 18.f3+/–) 17.Bd4 Ne5 18.Bb3 Bc5 (18...Nd3 19.f3=) 19.h3 (19.Nc3 Kf8+=) 19...Bd4 20.ed4 Ng6 21.Ne3 Nf4 22.d5 (better is 22.Bc4+/–) 22...Re3? (better is 22...a5 23.ba6 Ba6+=) 23.fe3+– Bd5 24.Bd5 Nd5 25.e4 (better is 25.Rfd1 Nc3 26.Ra7+–) 25...Nc3+/– 26.e5 Nb5 27.e6?? (better is 27.Rad1+=) 27...fe6–/+ 28.Rae1 Nd4 (28...Nc7 29.Rf4 a5 30.Rc4–+) 29.Rd1? (29.Re4 e5=+) 29...Nf5 (better is 29...e5!?–+) 30.Rfe1 Kf7 31.Rd7 Kf6 32.Rf1 (32.g4 Nh4 33.Rf1 Ke5 34.Rg7 Ng6=) 32...Kg6 (better is 32...e5–/+) 33.g4= Nh4 (33...Nh6=) 34.Rff7 (34.Re7 Kg5 35.Re6 Rd8 36.Re5 Kg6+–) 34...Rg8?? (better is 34...a5=+) 35.Ra7+/– h6 (35...h5 36.Kf2+/–) 36.Rfe7 (36.Kf2 Kh7+–) 36...e5 (better is 36...Kf6+=) 37.Re5?? (37.Kf2 Kf6+–) 37...Kh7 (better is 37...Nf3!? 38.Kf2 Ne5 39.Rb7 Rf8 40.Ke3 Nc4 41.Kd4 Rf4 42.Kd5–+) 38.Ra6?? (better is 38.Re6+–) 38...Nf3–+ 39.Kf2 Ne5 40.Rb6 Nd3 41.Kg3 Nc5 42.h4 Ne4 43.Kf3 Nf6 44.g5 hg5 45.hg5 Nd5 46.g6 (46.Rd6 Rf8 47.Kg4 Ne7–+) 46...Kh8 (better is 46...Kh6!? 47.Re6–+) 47.Rb5 Nf6 48.Rb1 Rc8 49.Rh1 Kg8 50.Kf4 (50.Ra1 Nd7–+) 50...Rc4 51.Ke5 Rc5 52.Ke6 Rc6 (53.Kf5 Nd5–+) 0–1. stoker – dit3, Live Game Caissa's Web, 2004.

7.Be2 Nbd7 8.0–0 0–0 9.a3 Bd6 10.d4 dc4 11.Bc4 Ne4 (11...a6 12.Nc3=) 12.Nbd2 (12.Bd3 Nef6=) 12...Ndf6 (12...Nd2 13.Nd2 a6 14.ba6 Ba6 15.Ba6 Ra6 16.Nc4=) 13.Ne4 Ne4 14.Bd3 h6 15.Be4 (15.Qc2 Ng5 16.Nd2 Nh3 17.Kh1–/+) 15...Be4= 16.Nd2 (16.Qe2!?=) 16...Bd3–/+ 17.Re1 Bb5 18.Ne4 (better is 18.e4!?–/+) 18...Bh2!–+ 19.Kh2 Qh4 20.Kg1 Qe4 21.Rc1 Rac8 ½–½. Hal1958 – Schnitzly, playchess.de, 2004.

7.Nc3 0–0

8.d4 Ba5 9.Bd3 dc4 (9...a6 10.0–0 dc4 11.Bc4 ab5 12.Bb5 Bc6 13.Bd3 Na6 14.a3 Bc3 15.Bc3=; 9...c6 10.0–0 dc4 11.Bc4 cb5 12.Bb5 a6 13.Bd3 Nc6 14.Rc1 Nb4 15.Be2=; 9...Re8 10.c5 c6 11.0–0 bc5 12.dc5 e5 13.Be2 Nbd7 14.Na4 Qc7 15.Rb1+=; 9...Ne4 10.Qc2 Nc3 11.Bc3 Bc3 12.Qc3 dc4 13.Qc4 a6 14.Qc2 Kh8 15.Be4=) 10.Bc4 Nd5 11.Qc2 a6 12.ba6 Na6 13.a3 Qf6 14.Nd2 Nc3 15.Bc3 +=.

8.d4 a6 9.Qb3 c5 (9...Qe7 10.a3 Ba5 11.a4 Ne4 12.Rc1 Rd8 13.Qc2 Qf6 14.Ne5 ab5 15.ab5+=; 9...Qd6 10.a3 Ba5 11.a4 Rc8 12.Ba3 Qd8 13.Rc1 dc4 14.Bc4 Bf3 15.gf3+=; 9...Ba5 10.Rc1 dc4 11.Bc4 ab5 12.Bb5 Ne4 13.0–0 Bc3 14.Bc3 Bd5 15.Bc4+=; 9...Bd6 10.Rc1 ab5 11.Nb5 Be7 12.Nc3 Nbd7 13.cd5 Nd5 14.Bc4 Nc3 15.Qc3+=) 10.bc6 Nc6 11.Ba3 Ba3 12.Qa3 dc4 13.Bc4 b5 14.Bd3 b4 15.Qb3 +=.

8.d4 dc4 9.Bc4 Nd5 (9...a6 10.0–0 ab5 11.Bb5 Qd6 12.Ne5 c6 13.Be2 Ba6 14.Nc4 Bc4 15.Bc4=; 9...Ne4 10.Qb3 Bc3 11.Bc3 a6 12.a4 Nc3 13.Qc3 Bf3 14.gf3 Qf6 15.ba6=; 9...c6 10.0–0 a6 11.bc6 Nc6 12.Rc1 Rc8 13.Bd3 Be7 14.a3 b5 15.Qe2=; 9...Bd5 10.Qb3 Bc3 11.Qc3 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Ne4 15.Qc2=) 10.Qb3 a6 11.a4 Qf6 12.Bd5 Bc3 13.Qc3 Bd5 14.Ne5 Qg5 15.Qc7 +=.

8.d4 c5 9.a3 cd4 (9...Ba5 10.dc5 bc5 11.cd5 Nd5 12.Qd2 a6 13.ba6 Na6 14.Bd3 Qf6 15.Rc1+=; 9...Bc3 10.Bc3 Ne4 11.Qc2 Nc3 12.Qc3 cd4 13.Qd4 dc4 14.Qd8 Rd8 15.Bc4=; 9...dc4 10.ab4 cb4 11.Na2 c3 12.Bc1 a5 13.ba6 Na6 14.Bd3 Nc7 15.Qc2+=) 10.ab4 dc3 11.Bc3 Nbd7 12.Rc1 Rc8 13.Qd4 dc4 14.Bc4 Bf3 15.gf3 +=.

8.d4 Ne4 9.Rc1 a6 (9...Qe7 10.cd5 Bd5 11.Bd3 a6 12.ba6 Na6 13.Be4 Be4 14.0–0 Bc3 15.Bc3+=; 9...Ba5 10.cd5 Bd5 11.Bd3 a6 12.Qc2 f5 13.a4 c5 14.Be4 Be4 15.Qe2+=; 9...Qd6 10.Nd2 Nd2 11.c5 bc5 12.dc5 Qc5 13.Qd2 Qe7 14.Bd3 e5 15.a3–/+; 9...dc4 10.Bc4 a6 11.ba6 Ba6 12.Qb3 Bc4 13.Qc4 Bc3 14.Bc3 b5 15.Qb3=) 10.Bd3 (10.Qb3!? Qd6 11.ba6 (11.Ne5 ab5 12.cb5 c5 13.bc6 Nc6 14.Nd3 Bc3 15.Bc3+=) 11...Ba6 12.Bd3+= (12.a3 Ba5 13.a4 Qb4 14.Qb4 Bb4 15.cd5–/+) 12...Nc6 13.cd5 Na5 14.Qc2 Bd3 15.Qd3+=) 10...dc4 (10...ab5 11.cd5 Ra2 12.Be4 Rb2 13.0–0 ed5 14.Bd3 c6 15.Rc2–/+) 11.Bc4 (11.ba6!? Bd5 12.Be4 Be4 13.a3 (13.0–0 Bd3 14.Re1 Bd6 15.Ne5–/+) 13...Bc3 14.Rc3–/+ Qd5 15.Ne5–/+) 11...ab5–+ 12.Bb3 (12.Bd3 Ra2 13.0–0 Bc3 14.Bc3 c5 15.Bb5–+) 12...Nc6 (12...c5 13.0–0 c4 14.Ne4 Be4–+ (worse is 14...cb3 15.Qb3 Be4 16.Qb4–/+) 15.Bc2–+) 13.0–0–/+ (13.Qe2 Na5 14.Kd1 Nb3 15.ab3–+) 13...Ba6?? (better is 13...Nc3 14.Bc3 Bc3 15.Rc3 Nb4–/+) 14.Ne4+– Be7 (14...Na5+–) 15.Rc6 Bb7 16.Rc1 (better is 16.Ne5+–) 16...Be4 17.Ne5 Kh8 (17...c5 18.f3 Bb7 19.Bc2+–) 18.Nc6 Bc6 19.Rc6 h6 (19...Bd6 20.Qh5+–) 20.Qf3 (20.d5 Bd6+–) 20...b4 (20...Bd6 21.Qh5+–) 21.Rfc1 Ra7 (21...Bd6 22.e4 Ra7 23.e5+–) 22.d5 Bd6 23.de6 fe6 24.Qg4 (24.Qh5 Kh7+–) 24...Qg5 (24...e5 25.f4 Qe7 26.fe5+–) 25.Qg5 hg5 26.Be6 Bc5 (26...Re8 27.Bd5+–) 27.Bb3 Kh7 (27...Bd6 28.Bd4 Rd8 29.Rd1+–) 28.Bc2 Kg8 29.Bg6 (better is 29.Rg6 Rf7 30.Bb3+–) 29...Ra2 30.Rb1 Rd8 (30...Bd6 31.Bd3 Ra5 32.Bc4 Kh7 33.Bd4+–) 31.Bd4 (31.Bc2 Ra7+–) 31...Rd7 (31...Rd6 32.Rd6 Bd6 33.Bd3+–) 32.Bc5 Rb2 (32...bc5 33.Bf5 Rb2+–) 33.Bd4 (33.Bb4?? Rb1 34.Bb1 Rd1 35.Be1 Re1) 33...Ra2 (33...Rb1 34.Bb1 Kf8 35.Bf5+–) 34.h3 1–0. TomJobe – Mango Mick, ChessWorld.net, 2014.

8.d4 Ne4 9.Qc2 dc4 (9...a6 10.a3 Bc3 11.Bc3 Nc3 12.Qc3 dc4 13.Bc4 Bf3 14.gf3 ab5 15.Bb5=; 9...c5 10.dc5 bc5 11.a3 Bc3 12.Bc3 a6 13.cd5 ed5 14.Be2 ab5 15.Bb5=; 9...c6 10.Bd3 Nc3 11.Bc3 Bc3 12.Qc3 dc4 13.Qc4 cb5 14.Qb5 Bf3 15.gf3=; 9...Bc3 10.Bc3 Nc3 11.Qc3 dc4 12.Bc4 a6 13.Qc2 Bf3 14.gf3 ab5 15.Bb5=) 10.Bc4 a6 11.Bd3 Nc3 12.Bc3 Bc3 13.Qc3 ab5 14.Qc2 Kh8 15.Bb5 =.

8.Be2 c6 9.0–0 cb5 10.cb5 Nbd7 11.Nd4 Ne5 12.Qb3 Qd6 13.Nc2 Nfg4?? (better is 13...Bc3 14.Bc3 Rfc8=) 14.Qb4?? (14.f4 Nc4 15.Bg4+– (15.Bc4?! dc4 16.Qc4 Qd2+=)) 14...Nf3!! (14...Nf3 15.Bf3 Qh2) 0–1. Mallmann,Bernd (1970) – Liesenfeld,Holger (1860), SVR–ch MAT, 2008.

6.c4 dc4

7.Bc4 a6 8.0–0 =.

7.Bc4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Be7 11.d4 0–0 12.Nbd2 c6. zack1984 (2045) – borisd (1795), gameknot.com, 2016.

7.Bc4 Bb4 8.0–0 0–0 9.a3 Be7 10.d4 c6 11.Nbd2 h6 (11...cb5 12.Bb5 Qd6 13.Rc1=) 12.Rc1 cb5 (12...a6 13.bc6 Nc6 14.Bd3=) 13.Bb5+= a6 14.Bd3 b5 15.Qc2 (15.Qe2 Bd6=) 15...Nc6 (15...Nbd7 16.Qc7 Qb8 17.Qa5=) 16.Qb1 (16.Nb3 Rc8 17.Qe2 Nd7=) 16...Na7 (16...b4 17.Qa1=) 17.Rc2 (17.e4 Rc8=) 17...Rc8= 18.Rfc1 Rc2 (18...Qd6 19.e4 Rc2 20.Rc2=) 19.Rc2 (19.Qc2 Qd6=) 19...Qd7 20.Ne5 Qd6 21.Qc1 Rc8 22.Rc8 Nc8 23.Be2 Nb6 24.Bf3 Bf3 25.Ndf3 g6 26.Nd3 Nc4 27.Nc5 Qc6=+ 28.Nd3 Qd6 29.Nc5 ½–½. Van Esbroeck,Dirk – Benali,S, Melsele, 1996.

7.Bc4 Bb4 8.0–0 0–0 9.a4 Nbd7 10.Ba3 Ba3 11.Ra3 Nc5 12.d4 Nce4 13.Be2 Nd5 14.Nfd2 Nd2 15.Nd2 Rc8 16.Bf3 Ba8 17.Nc4 c5 18.bc6 Bc6 19.Ne5 Qd6 20.Ra1 Ne7 21.Nc6 Nc6 22.d5 ed5 23.Qd5 Qd5 ½–½. hal1958 – schnitzly, HCL–A1663 playchess.de, 2004.

7.Bc4 Bd6 8.0–0 0–0 9.a4 a6 10.d3 (10.Nc3 Nbd7=) 10...Nbd7 11.e4 e5 12.Nbd2 Re8 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.Qc2 Nf8? (13...h6 14.Nh4+=) 14.ba6 (better is 14.a5!?+–) 14...Ba6+= 15.Bb5 Bb5 16.ab5 Ra1 17.Ra1 Qd7 18.Qb3 Ng6 19.Nc4 e5 seems the pivot of the position 19...Qg4 (19...Nh5!?+=) 20.h3+/– (worse is 20.Nd6 cd6 21.Ra7 Re7+/–) 20...Qe6 (20...Qd7 21.Ra7 (worse is 21.Nd6 cd6 22.Ra6 d5+=) 21...Qe7 22.Qc2+/–) 21.Bc1 (better is 21.Ng5!? Qe7 22.Ra7+/– (22.Nd6?! cd6 23.Ra6 h6+=)) 21...h6 22.Qc2 (22.Ra7 Nh5+/–) 22...Bc5 (22...Qd7 23.Be3+=) 23.Be3 (23.Ra7 Rc8+/–) 23...Be3 24.Ne3 (24.fe3 c6 25.Ra6 Nd7 26.bc6 Qc6+=) 24...Qd7+= 25.Qb3 Nf4 Exerts pressure on the backward pawn 26.Ra3 N6h5 (26...Qe7 27.Ra7 Qc5 28.Kh2=) 27.Kf1 (27.Nc4 Ng6 28.Ra7 Re6+/–) 27...Ng6 (27...Kh7!?=) 28.Qd5+/– Qe7 29.Ra8 (29.Ra7!? Nhf4 30.Qc4+=) 29...Nhf4= 30.Nf5 Qf8 31.Re8 Qe8 32.Qc4 Qd7 33.Ne1 (33.d4 ed4 34.N3d4 Kh7=) 33...Nf8 34.Qc6 Qd8 35.Qc4 N8e6 36.g3 Nh3 37.Nf3 Qf6 38.Kg2 (38.Qd5!?=) 38...Nhg5–/+ 39.Ng5 Qg5 (39...Ng5?! 40.Qc7 Ne6 41.Qc8 (41.Qb6?? Nf4 42.gf4 Qb6–+) 41...Kh7 42.Qe8=; 39...hg5?! 40.Ne3 Qd8 41.Nd5–/+) 40.Kf1 (40.d4 ed4 41.Nd4 Qc5 42.Qc5 Nc5–/+) 40...Qd8 41.Qc3 Qf6 42.Ne3 Nd4 43.f4 Nb5 (43...ef4?! 44.Nd5 Qe6 45.Qd4 Qh3 46.Ke2 fg3 47.Ne7 (47.Nc7?? Qh2 48.Kf3 g2–+) 47...Kh7 48.Qd8 Qg2 49.Ke1 Qf2 50.Kd1 Qg1 51.Ke2 Qf2 52.Kd1 Qg1 53.Ke2 Qf2 54.Kd1=) 44.Qe5 Qe5 45.fe5 Nd4 46.Nd5 Ne6 47.Kf2 b5 48.Ke3? (better is 48.Ne7!? Kf8 49.Nc6–/+) 48...c5–+ 49.Kd2 h5 50.Kc3 (50.Ne7 Kf8 51.Nf5 b4–+) 50...Kh7 51.Kd2 (51.Ne7 Nd4 52.Kd2 g5–+) 51...g5 52.Ne7 (52.Ke3–+) 52...h4 53.Ke2 (53.gh4 gh4 54.Ke3–+) 53...h3 54.Kf2 b4 55.Nd5 b3 56.Nc3 b2 57.Nb1 g4 58.Nc3 Nd4 59.Nb1 Kg8 60.Kg1 Kf8 61.Kh1 (61.e6 Nf3 62.Kf1 fe6–+) 61...Ke7 62.Kg1 Ke6 63.Na3 Nb5!! 64.Nb1 (64.Nb5 b1Q Double attack (64...b1Q Decoy)) 64...Ke5 65.Nd2 Kd4 66.e5 Kd3 67.Nb1 Kc2 0–1. Bulcourf,Carlos (2015) – Villalba,Marcelo (2185), Villa Martelli ARG, 2014.

7.Bc4 Nbd7 8.0–0 Be7 9.a4 0–0 10.Be2 Nc5 11.Bf6 Bf6 12.d4 Ne4 13.Nfd2 Qd6 (13...Nd2!? 14.Nd2 c5 15.bc6 Bc6=) 14.Bf3+= Nd2 15.Nd2 (< 15.Qd2 Bf3 16.gf3 c5 17.bc6 Qc6–/+) 15...Bf3 16.Qf3 (< 16.gf3 c5 17.bc6 Qc6=+) 16...Qd5 17.Qd5 ed5 18.Rac1 Rac8 19.Rc6 Rfe8 20.Rfc1 Re7 21.Rd6! Rce8 (21...cd6 22.Rc8) 22.Rd5 h6 23.g3 g5 24.Rc6 Bg7 25.Nf3 Kf8 26.Ne5 (better is 26.h4!? f6+–) 26...Be5 27.de5 Kg7 28.f4 g4 29.Kg2 h5 30.Kf2 Rh8 31.f5 f6 (31...Ree8 32.e4 h4+–) 32.ef6 1–0. hal1958 – schnitzly, HCL–A1530 playchess.de, 2003.

7.Bc4 Nbd7 8.0–0 Be7 9.a4 h6 10.d4 0–0 11.Nbd2 c5 12.Rc1 Rc8 13.Be2 cd4 14.Nd4 Nc5 15.Bf3 Nd5 16.Ba3 Bd6 17.Bc5 Bc5 18.N2b3 Bd6 19.Rc8 Qc8 20.Qc1 Qd7 21.Qb1 Nc3 22.Qa1 Bf3 23.Nf3 Rc8 24.Nbd4 Rc4 25.Nd2 Rc8 26.Nc6 Rc6 27.bc6 Qc6 28.Kh1 Na4 29.Rc1 Bc5 30.Nb3 Qb5 (30...a5 31.Kg1=) 31.Nc5+= bc5 32.Rb1 Qc6 33.Rb8 Kh7 34.Qb1 1–0. Hal1958 – Impi, playchess.de, 2002.

7.Bc4 Be7 8.0–0 0–0 9.d4 a6 10.Ba3 =.

7.Bc4 Be7 8.0–0 0–0 9.d4 c6 10.a4 c5 11.Nbd2 Nbd7 12.Rc1 cd4 13.Nd4 Ne5? (13...Rc8 14.N2f3=) 14.Be2 (14.Ne6 fe6 15.Be5 Bd5+/–) 14...Bc5 (14...Qd5 15.N4f3 Ng6 16.Bc4+=) 15.N2f3 (15.Ne6!? fe6 16.Be5+/–) 15...Nf3 16.Bf3 (worse is 16.gf3 Qd5+=) 16...Bf3 17.Nf3 (worse is 17.gf3 Nd5=) 17...Ne4 18.Nd4 Bd4 19.Bd4 Rc8 (19...Qh4 20.Qd3 Nf6 21.Qe2+=) 20.Qe2 (20.Rc8!? Qc8 21.Bg7+/–) 20...Qd5 21.Qb2 (21.Qg4 g6+=) 21...f6 22.Rfd1 Qf5 (22...Rc1 23.Qc1 Rd8 24.Rf1+=) 23.Rc2 (23.f3 Ng5+=) 23...Rfd8 24.Rdc1 e5 25.Bc3 Qd7 26.Be1 Nc5 27.h3 Nd3?? (better is 27...Kh8 28.Qc3 Ra8=) 28.Qb3+– Kf8 29.Rc8 Nc1 (29...Rc8 30.Rc8 Qc8 31.Qd3 Kf7+–) 30.Bb4 Ke8 (30...Qd6 31.Bd6 Ke8 32.Qe6) 31.Qg8 1–0. algernon (2495) – vitorcosta (2375), net–chess.com, 2016.

7.Bc4 Be7 8.0–0 0–0 9.d4 Ne4 10.Nc3 (10.Qc2 c5+=) 10...Nc3 11.Bc3 c6 12.a4 (12.Qe2 a6 13.bc6 Bc6+=) 12...c5 (12...a6!?=) 13.Qe2 cd4 14.Bd4 Nd7 15.Rfd1 Qe8 16.Ne5 Rd8 17.Nc6 Bc6 18.bc6 Nc5 19.Bb5 Rd5 20.e4 Rg5 (20...Rd8 21.c7 Rd4 22.Be8 (22.Rd4?! Qc8+/–) 22...Rd1 23.Rd1 Re8 24.Qb5+–) 21.f4 Rg6 22.Bf2 (22.a5 Nb3 23.c7 Qc8 24.ab6 Na1+–) 22...e5 (22...a6 23.f5 ef5 24.ef5+=) 23.fe5 (23.f5 Rd6+/–) 23...Re6 24.Rd5 Qc8 25.a5 Nb3 26.ab6 Na1 27.b7 Qc7 28.Qb2 a6 29.Ba4 Nc2?? 30.Qc2 Re5? 31.Re5+– Qe5 32.c7 (32...Bd6 33.c8Q Qh2 34.Kf1 Qh1 35.Bg1+–) 1–0. Van Esbroeck,Dirk – Dullaert,C, corr CiF, 1990.

6.c4 Bc5

7.d4 Bb4 8.Bc3 (8.Nc3 0–0=) 8...Bc3 (8...Be7 9.Nbd2=) 9.Nc3 dc4 (9...0–0 10.cd5 Nd5 11.Nd5 Bd5 12.Bd3=) 10.Bc4+= Bf3 (10...0–0!?+=) 11.Qf3+/– Nbd7 12.0–0 0–0 13.h3 c5?? (better is 13...Ne8+/–) 14.bc6+– b5 (14...Rc8 15.Ba6 (15.cd7?! Rc4 16.Rac1 h6+=) 15...Nb8 16.Bc8 Qc8 17.Rfc1 Qc6 18.Qc6 Nc6 19.Nb5+–) 15.Bb5 (15.cd7?! bc4 16.Rab1 Qa5+/–) 15...Nb6 16.Rfc1 Qc7 (16...Nbd5 17.Rab1+–) 17.Rab1 Rad8 (17...Nbd5 18.Nd5 Nd5 19.Bc4 Qc6 20.e4+–) 18.Bd3 Rd6 (18...Qe7 19.Qg3 Rc8+–) 19.Nb5 Qe7 20.Nd6 Qd6 21.Rb6! ab6 22.c7 Rc8 (22...Qd7 23.Ba6 h6+–) 23.Qb7 Qd7 24.Ba6 1–0. Janek – greyowl, internet, 2016.

7.Be2 0–0 8.0–0 dc4 9.Bc4 Nbd7 10.d4 Be7 11.a4 c5 12.dc5 Nc5 13.Qc2 Qc7 14.Nbd2 Rfd8 15.Nd4 Nce4 16.Ne4 Be4 17.Qb3 Bd5 18.Bd5 Nd5 19.Rac1 Qd7 20.e4 Nf6 21.Nc6 Rdc8 22.Rfd1 Qe8 23.Ne7 Qe7+= 24.f3 Nd7 25.Qe3 Nc5 26.Qf4 Na4=+ 27.Ba1 Nc5 28.Qg4 f6 29.f4 Nb3 30.Rc8=+ Rc8 31.Bb2 Nc5 32.e5 f5 33.Qe2 Qb7 34.Qc4 Qe4 35.Qa2? Qf4 36.Ba3 Qe5 0–1. stoker – Simson10, Live Game Caissa's Web, 2004.

7.Be2 0–0 8.0–0 Nbd7 9.Nc3 (9.cd5 Nd5 10.d4 Bd6=) 9...a6 (9...dc4!? 10.Bc4 Bf3 11.Qf3 Ne5=) 10.cd5= Nd5 11.Qb3 ab5 12.Bb5 (worse is 12.Qb5 Nc3 13.Bc3 Ba6 14.Qa6 Ra6 15.Ba6 Bd6–/+; 12.Nb5?! c6 13.Nc3 Bd6=) 12...Ba6 (better is 12...N7f6!?+=) 13.Ba6+/– Ra6 14.Nd5 ed5 15.Qd5 Ra5 16.Qb3 Re8 17.Nd4 Ne5 18.f4 Ng6 19.Rad1 Ra8 (19...Nh4 20.Nf3+/–) 20.Nf5+/– Rc8? (better is 20...Bf8+/–) 21.Ng7+– Rb8 (21...Re4+–) 22.Ne8 Qe8 23.Qc3 Qf8 (23...f6 24.f5 Ne5 25.d4+–) 24.f5 Ne7 (24...Bb4 25.Qb3 Ne5 26.Be5 Bd6 27.Bd6 Qd6+–) 25.Qh8 1–0. forsetinn – raqitt, gameknot.com, 2013.

6.c4 c6

7.a4 cb5 8.ab5 a5 9.Be2 Bb4 10.0–0 Nbd7 11.d4 Rc8 12.Nbd2 Ne4 13.Qb3?? Nd2 14.Nd2 Bd2 15.Ba3 Bb4! 16.Bb4 ab4 17.Qb4 Qe7 18.Qb3 0–0 19.Ra7 Nf6 20.Rc1 Ra8 21.Rca1 Qc7 22.cd5 Ra7 23.Ra7 Qc1 24.Bf1 Bd5 25.Qa3 Qb1 26.Qa1 Qa1 27.Ra1 Ra8 28.Rc1 Ne8 29.f3 Kf8 30.e4 Bb7 31.Kf2 Ke7 32.Ke3 Ra3 33.Kf4 h6 34.h4 f6 35.h5 Kd7 36.g3 Nd6 37.Be2 Rb3 38.e5 Nb5 39.ef6 gf6 40.g4 Nd4 41.Bc4 e5 42.Kg3–+ Rf3 (42...Rf3 43.Kh2 f5 44.gf5 Rf5–+) 0–1. carocan (1740) – lcommandante (1640), kurnik, 2011.

7.a4 Nbd7 8.Nc3 (8.cd5 A) 8...cd5 9.Be2 (9.d4 Bb4 10.Nbd2 a6 11.Bd3 ab5 12.ab5; 9.Ba3 Ba3 10.Na3 Rc8 11.Be2 Ne4 12.0–0) 9...Be7 10.0–0 0–0 11.Nc3 a6 12.Rc1; B) 8...Nd5 9.Nc3 (9.Be2 a6 10.0–0 N7f6 11.Ne5 ab5 12.ab5; 9.Bc4 Rc8 10.0–0 N5f6 11.d3 Bd6 12.Na3) 9...Nb4 10.Be2 Be7 11.0–0 0–0 12.d4; 8.Be2 dc4 9.Bc4 (9.0–0 Rc8 10.Bc4 cb5 11.Bb5 Bd6 12.d4; 9.Nc3 Rc8 10.Bc4 cb5 11.Bb5 a6 12.Be2; 9.bc6 Bc6 10.Bc4 Rc8 11.Ba6 Rc7 12.0–0) 9...Bd6 10.Nc3 a6 11.bc6 Bc6 12.d4) 8...Qc7 (8...Bb4 9.bc6 (9.cd5 cd5 10.Qb3 Ba5 11.Be2 Ne4 12.0–0; 9.Rc1 dc4 10.Bc4 cb5 11.ab5 Rc8 12.Be2; 9.Qb3 Bd6 10.cd5 Nc5 11.Qc2 cd5 12.Rc1) 9...Bc6 10.cd5 Bc3 11.dc6 (11.dc3 Bd5 12.c4) 11...Bb2 12.Ra2=; 8...Rc8 9.bc6 Rc6 10.cd5 ed5 11.Be2 Be7 12.Nd4; 8...dc4 9.Bc4 Bd6 10.0–0 0–0 11.d4 cb5 12.Nb5; 8...cb5 9.ab5 (9.cd5 Nd5 10.ab5 Nc3 11.dc3 Qc7 12.Ra2) 9...dc4 10.Bc4 Bd6 11.d3 Qc7 12.e4) 9.Be2 (9.bc6 Bc6 10.cd5 Nd5+= 11.Nb5 Qd8 12.Rc1; 9.cd5 cd5 10.Rc1 Qd6 11.Nb1 Qb4 12.Ba3; 9.Rc1 dc4 10.Bc4 a6 11.bc6 Qc6 12.Be2) 9...Bb4 (9...dc4 10.Bc4 cb5 11.Bb5= a6 12.Be2) 10.h3 (10.cd5 Bc3 (10...cd5 11.Rc1 Qd8 12.0–0) 11.d6 Qd6 12.dc3 Qc7=) 10...0–0 (10...dc4 11.Rc1+= a6 12.Bc4) 11.0–0 (11.cd5 Nd5 12.Nd5 cd5 13.Rc1=) 11...Nc5 (11...dc4!? 12.Bc4 cb5 13.Bb5 a6+=) 12.Qc2 (12.Na2 Ba5+=) 12...Nfe4 (12...dc4 13.Na2 c3 14.Nc3 cb5 15.Na2+=) 13.Na2 Ba5 14.Ba3 (14.Be5 Qd8 15.d3 Nf6+=) 14...Rfc8 15.d4 Nd7 16.Bd3 (16.cd5 ed5 17.bc6 Qc6 18.Qc6 Rc6=) 16...Ndf6 17.Ne5 (17.Rfc1 c5=) 17...cb5 (17...c5 18.Bb2=) 18.ab5 dc4 19.Be2 (better is 19.Nc4 Bd5 20.Rfc1=) 19...Nd2–/+ 20.Rfd1 (20.Rfc1 Bd5 21.Qa4 a6–/+) 20...Be4–+ 21.Qb2?? (better is 21.Qa4 Nb3 22.f3–/+) 21...c3 22.Rac1 (22.Nc3 Bc3 23.Qa2–+) 22...cb2 23.Rc7 Rc7 24.Bb2 Rc2 25.f3 Rb2 26.Nc1 Bc2 27.Rd2 Bd2 28.Ncd3 Be3 29.Kh2 Bf4! 30.Nf4 Ba4 31.Nc6 Bb5 32.Bb5 Rb5 33.Nd3 Rb3 34.Nde5 a5 35.Ne7 Kf8 36.N5c6 Nd5 37.Nd5 ed5 38.Kg3 g6 39.Kf4 Rc8 40.Na7 Rc7 (40...Rc7 41.Ke5 Ra7 42.Kd5 a4–+) 0–1. Niermann,Georg – Nordlohne,Jan_Bela, Vereinsmeisterschaft, 1998.

7.a4 Be7 8.Be2 0–0 (--> 5.c4 Bb7 6.Nf3 Be7 7.Be2 0–0 8.a4 c6).

7.Nc3 a6 8.Rc1 =.

7.Nc3 Nbd7 8.bc6 Bc6 9.cd5 Nd5 10.Nd5 Bd5 (< 10...ed5 11.Rc1 Rc8 12.Nd4+=) 11.Rc1 f6 12.Bb5 Bd6 (12...e5 13.0–0=) 13.Nd4 (13.Qa4 Qe7+=) 13...0–0= 14.Bc4 (better is 14.e4 Be4 15.Ne6+=) 14...Bg2?? (better is 14...Ne5 15.Nc6 Bc6 16.Be6 Kh8 17.Be5 fe5 18.Rc6 Qf6–/+) 15.Ne6 (15.Be6?! Kh8 16.Rg1 Nc5 17.Rg2 Nd3 18.Kf1 Nc1+–) 15...Qe7 16.Rg1 Bh3 (16...b5 17.Bb3 Kh8 18.Nf8 Rf8 19.Rg2 Nc5+–) 17.Rg7 Kh8 (17...Qg7 18.Ng7 Kg7+–) 18.Re7 Rg8 19.Rh7! Kh7 20.Qh5# 1–0. AGove – Bull_Dog_Baz, ChessWorld.net, 2007.

7.Nc3 Be7 8.d3 0–0 9.Qb3 (9.Be2 dc4 10.dc4 Qc7=) 9...dc4 10.dc4 e5 (better is 10...Qc7!?=) 11.Rd1 Nbd7 12.Ne5! Qc7 (12...Ne5 13.Rd8 Pinning (13.Rd8 Deflection)) 13.Nd7 Nd7 14.Qc2 Nf6 15.f3 Rad8 16.Bd3 g6 17.e4 Rd7 18.Ne2 Rfd8 19.0–0 (better is 19.Bc3+/–) 19...Rd6?? (better is 19...cb5 20.cb5 Qc5 21.Qc5 Bc5 (worse is 21...bc5 22.Nc1+=) 22.Kh1 Ne4+=) 20.e5+– R6d7 (20...Rd3 21.Rd3 Rd3 22.Qd3 Nd7+–) 21.ef6 Bd6 22.g3 Be5 23.Bc1 (23.Be5!? Qe5 24.Be4 Qf6 25.Rd7 Rd7+–) 23...Bf6 24.Be4 (24.Bf4 Qc8 25.a4 cb5 26.ab5 Kg7+–) 24...Rd1 25.Rd1 Rd1 26.Qd1 ½–½. Zieba,Marcin – Jaszczuk,Mateusz, II Turniej Szachowy o Mistrzostwo Poland, 1999.

7.Be2 Nbd7 8.0–0 Qc7 9.a4 Bd6 10.h3 h6 11.Qc2 g5 12.d4 Rg8 13.cd5 Nd5 14.bc6 Bc6 15.Rc1 Rc8 16.Nbd2 Qb7 17.Qb3 Bb8 18.Ne5 Be5 19.de5 Nc5 20.Qa3 Qd7 21.Nc4 Kf8 22.Nd6 Rd8 23.Bd4 Kg7 24.Bc5 bc5 25.Qc5 Ba8? 26.Qb5 Qb5 27.Nb5 f5? 28.ef6! Nf6 29.Rc7 Rd7 30.Rd7 Nd7 31.Na7 Kf6 32.Nb5 Ke5 33.a5 Nf6 34.a6 h5 35.Nc7 g4 36.hg4 hg4 37.Na8 Ra8 38.f3 gf3 39.Bf3 Ra7 40.Bb7 Nd7 41.Rc1 Kd6 42.Rc6 Ke7 43.Kf2 Nb6 44.Rb6 Kd7 45.g4 Ke7 46.Kf3 Kd7 47.Ke4 Ke7 48.Ke5 Kd7 49.g5 Ke7 50.Re6 Kf7 51.g6 Kg7 52.Kf5 Kf8 53.Kf6 Kg8 54.Rc6 Kf8 55.Rc8 1–0. carocan (1800) – quickfox (1700), kurnik, 2011.

6.c4 Bd6

7.d4 a6 8.cd5 Nd5 9.e4 Bb4 10.Nbd2 =.

7.cd5 ed5 8.Nd4 Bc8 =.

7.cd5 ed5 8.Be2 0–0 9.0–0 Nbd7 10.Qc2 Nc5 11.Nd4 Re8 12.Nc3 Nfe4 13.Nf5 Bf8 14.d3 Nc3 15.Qc3 Qg5 16.Nd4 Bd6 17.a4 Qh6 18.g3 Bc8 19.Nb3 White plans a5 19...Bh3 20.Rfe1 Be5 21.Nd4 Rad8 22.Qc2 Rd7 (22...a6 23.Nc6 Bb2 24.Qb2=) 23.a5+= Bd4 24.Bd4 Ne6 25.Bb2 d4 26.e4 (26.Bf3!? de3 27.Bc6+/–) 26...Qg5= 27.Qc6 Nf4? (better is 27...Nd8!? 28.Qc4 Qf6=) 28.Bf1+– Qg4 0–1. Boyd,Frank – Marcussi,Bartolome Jorge, Volmac–A corr8286, 1982. (=1.Nf3 Nf6 2.c4 b6 3.b4 Bb7 4.Bb2 e6 5.b5 d5 6.e3 Bd6)

7.Be2 dc4 8.Bc4 a6 9.0–0 +=.

7.Be2 Nbd7 8.0–0 0–0 9.a4 e5 10.d3 dc4 11.dc4 e4 12.Nfd2 Ne5 13.Nc3 Qe7 14.f3 (better is 14.a5 ba5 15.Nb3=) 14...ef3–/+ 15.Nf3 Nf3 16.Bf3 Qe3 17.Kh1 Bf3 (17...Qh6!? 18.g3 Bg3–/+) 18.Rf3 Qh6 19.Nd5?? (19.Rh3 Qg6=+) 19...Ng4 (19...Qh2) 20.Qf1?? (better is 20.h3 Ne5 21.Be5 Be5 22.Ne7 Kh8 23.Ra2=+) 20…Qh2# 0–1. stoker – rayban2, Live Game Caissa's Web, 2004.

7.d4 0–0

8.Nc3 Bb4 9.Qc2 dc4 10.Bc4 Bf3 11.gf3 Nd5 12.Ke2 Re8 (12...Bc3 13.Bc3 a6 14.a4=) 13.Bd3 g6 14.f4 Qh4 15.Be4 Bc3 16.Bc3 Nd7 17.Rag1 (17.a4 a6=) 17...N7f6 (17...a6 18.ba6 Ra6 19.Bd2+=) 18.Bf3 (18.Bd3!?=) 18...a6+= 19.a4 (19.ba6!? Ra6 20.Ra1+=) 19...ab5–/+ 20.ab5 Nc3 21.Qc3 Ra2 22.Kd3 Nd5 (22...Qf2?! 23.Rf1 Qh4 24.Qb3 Rh2 25.Qc2 Rc2 26.Rh4–/+; 22...Rf2 23.Qe1 Nd5 24.Rg3 Qg3 25.hg3 Rf3 26.g4–/+) 23.Bd5 ed5 24.Rc1?? (24.Ra1 Qf2 25.Rhe1–+) 24...Qf2 25.Rhe1 Qf3 (better is 25...Rea8 26.Ra1 R8a3 27.Ra2 Rc3 28.Kc3 Qa2–+) 26.Qc7?? (better is 26.Rc2 Qe4 27.Kd2–+) 26...Qe4 27.Kc3 Ra3 (27...Qg2 28.Re2 Qe2 29.Qf7 Kf7 30.Rc2 Qc2 31.Kb4 Qc4) 28.Kb2–+ Re3 (better is 28...Rea8 29.Rc3 Ra2 30.Kb3 R8a3 31.Kb4 Rc3 32.Qb8 Kg7 33.Qe5 Qe5 34.de5 Rc4 35.Kb3–+) 29.Re3 Qe3 30.Qb6 (30.Qc3 Qe2 31.Rc2 Qb5 32.Qb3 Qa5–+) 30...Qf4 (better is 30...Qd2 31.Rc2 Qb4 32.Ka2 Ra8 33.Qa6 Ra6 34.ba6 Qd4–+) 31.Qc5 Qh2 32.Kb3 (32.Rc2 Qh1–+) 32...Qh3 33.Kb4 Ra8 34.Rc3 Qg2 35.b6 (35.Ra3 Qb2 36.Rb3 Qd2 37.Qc3 Qe2–+) 35...Qb2 (better is 35...Qa2 36.Rf3 Ra4 37.Kb5 Ra5 38.Kc6 Rc5 39.dc5 d4–+) 36.Rb3 Qd2 37.Qc3 Qe2 38.Ra3 Ra3 39.Qa3 Qc4 40.Ka5 Qc8?? 41.Qc5 Qa8 42.Kb5 h5 43.Qc6 Qa2 44.Qc8 Kg7 45.b7 Qb3 46.Kc6 Qc4?? 47.Kd6 Qd4 48.b8Q Qf4 49.Kd5 Qf3 50.Kc5 Qc3 51.Kb6 Qb3 52.Ka7 Qa4 53.Kb7 Qb5 54.Ka8 Qa5 55.Qa7 Qd5 56.Qab7 Qa5 57.Qa6 Qd5 58.Qcb7 Qd8 59.Ka7 Qd4 60.Qab6 Qa4 61.Kb8 Qe8 62.Qc8 Qe5 63.Qcc7 Qe8 64.Qd8 Qe5 65.Kc8 Qf5 66.Qd7 Qc2 67.Qbc6 Qb3 68.Qd4 Kh7 69.Qdd7 Kg7 70.Qcc7 Qa2 71.Qd4 Kh7 72.Qda7 Qe6 73.Kd8 Kg7 74.Qe7 Qd5 75.Ke8 Qb5 76.Qed7 Qe5 77.Qe7 Qb5= 78.Qed7 Qe5 ½–½. Vitali,Roberto – Zoppitelli,Mauro, Assisi op–B 4th, 2008.

8.Nbd2 a6 9.a4 +=.

8.Nbd2 c5 9.Rc1 Nbd7 10.Bd3 cd4 11.ed4 Ne4 12.0–0 Qf6 13.Qc2 Nd2 14.Nd2 Qh6 Threatening mate: Qxh2 15.h3 White prepares the advance c5 15...Bf4 16.c5 (better is 16.Rcd1!? a6 17.c5 bc5 18.dc5 Nc5 19.Qc5 Bd2 20.Qb6=) 16...bc5–/+ 17.dc5 Nc5 18.Qc5 Deflection from d2 18...Bd2 19.Qe7 Rab8 (worse is 19...Bc1 20.Bc1 Qf6 21.Qb7+=) 20.Rc7 Bg5 21.Qa3 Bf4 22.Bc1 a6 23.ba6 The passed pawn on a6 quickly leads to threats 23...Ba8 24.Bf4 Qf4 25.Rfc1 d4 26.a7 Qg5 Threatening mate... how? 27.Bf1 Rbd8 28.R1c5 Qg6 29.Qd3 Be4 30.Qd2 d3 (30...f6 31.Kh2+=) 31.Rb5 (31.f3 Ba8=) 31...Qf6 (31...Rfe8 32.f3 Bf5 33.Rbb7=) 32.Rc4= Bd5 33.Rcb4 Qe7 34.Ra5 (worse is 34.Qd3 Bc6 35.a8Q Ra8–/+ (35...Ba8?! 36.Qb1=)) 34...Rd7 35.Bd3 Ra7 36.Ra7 Qa7 37.Qc2 Qa2 38.Bh7 Kh8 ½–½. Nebe,Lutz – Roggensack Hanspach,Peter, corr SOK–89–40, 1989.

8.Nbd2 c5 9.dc5 Bc5 10.Bd3 Re8 (10...dc4 11.Bc4 a6 12.0–0=) 11.0–0 Nbd7 (11...a6 12.Bf6 Qf6 13.cd5 Bd5 14.Ne4=) 12.Ne5 (12.cd5 Nd5 13.Qb1 N7f6+=) 12...Ne5= 13.Be5 Nd7 (13...dc4 14.Bc4 (worse is 14.Nc4 Qd5 15.f3 Be3 16.Kh1 Ng4–/+) 14...Nd7 15.Bg3=) 14.Bb2 e5 (14...dc4 15.Bc4 Qh4 16.Qe2=) 15.cd5 (15.Nb3 Nf6=) 15...Bd5 16.Bc4 (16.Nb3 e4 17.Be2 Ne5=) 16...Nf6 (16...Bc4 17.Nc4 a6 18.Qa4=) 17.Bd5 (17.Qe2 Qd7=) 17...Qd5 18.Qe2 (18.Nf3 Qe4=) 18...Rac8 19.Rfd1 Qe6 20.Nb3 (20.Nc4 e4=) 20...Bb4 (20...Bd6 21.e4+=) 21.Rac1 h6 (21...Rc1 22.Rc1 Rd8 23.Rc7+=) 22.Qf3 (22.Rc8 Rc8 23.e4 Qg4 24.Qg4 Ng4=) 22...Rc4 (22...Rc1 23.Rc1 (worse is 23.Bc1 Qc4–/+) 23...e4 24.Qe2=) 23.Rc4 (23.a3!?=) 23...Qc4+= 24.Rc1 (24.Qc6 Qe2 25.Rb1 Kh7+=) 24...Qb5–/+ 25.Qf5 (25.e4 Bc5–/+) 25...Bd6 26.Qc2 Qa6 27.h3 (27.Rd1 Re6–/+) 27...Ba3 (27...Qa4 28.Rd1 Bf8 29.Qb1–/+) 28.Ba3 Qa3 29.Rd1 Qa4 (29...Qa4 30.Rd6 b5–/+). Jaegerflod,Kent – Franzen,Thomas, corr SSKK M–2, 1984.

8.Nbd2 c5 9.cd5 Nd5 10.dc5 Bc5 =.

8.Nbd2 c5 9.Bd3 a6 =.

8.cd5 Nd5 9.e4 Nf6 =.

7.Be2 0–0

8.0–0 a6 9.d3 +=.

8.0–0 dc4 9.Bc4 c6 10.a4 cb5 11.ab5 Nbd7 12.Nc3 Nc5 13.d4= Nce4 14.Ne4 Be4 15.Nd2 Bb7 16.Qc2 Qc7= 17.Rac1 Bh2–/+ 18.Kh1 Bd6 19.Nf3 Rfc8 20.Qb1 Qd7 21.Bd3 Bd5 22.Ne5 Be5 23.de5=+ Ne4?? 24.Be4+/– Be4 25.Qe4 Qb5 26.Ba3 Qd5 27.Qd4 Rd8 28.Bd6 Qb5 29.Qg4 Qc6?? 30.Be7 Qe8 31.Bf6 g6 32.Bd8 Rd8 33.Rc7 Rd7 34.Rfc1 Rc7 35.Rc7 Qd8 (35...Qd8 36.Ra7 Qb8+–). stoker – Simson10, Live Game Caissa's Web, 2004.

8.0–0 Nbd7 9.d4 a6 10.a4 Re8 11.Nbd2 e5 12.de5 Ne5 13.Qb3 (13.Ne5 Be5 14.Be5 Re5=) 13...dc4+= 14.Nc4 Bd5 (14...Nf3!? 15.gf3 Nd7 16.Nd6 cd6=) 15.Nfe5= Be5 16.Be5 Re5 17.Qc3 Rg5 18.f3 Qe7 19.Nd2 Bb7 20.e4 (20.Bc4 Rc5 21.e4 c6 22.ba6 Ba6= (22...Ra6? 23.Nb3+–)) 20...Nd5+= 21.ed5 Qe2 22.Rf2 Qe5 23.Rc1 ab5 24.Qe5 Re5 25.Rc7 Bd5 26.ab5 Kf8 27.Nc4? (27.Ne4!? Be4 28.fe4 Ra1 29.Rf1 Rf1 30.Kf1 Rb5 31.Ke2–/+) 27...Bc4 (27...Re7 28.Re7 Ra1 29.Rf1 Rf1 30.Kf1 Bc4 31.Re2 Bb5–+ (31...Be2?! 32.Ke2 Ke7 33.Ke3=)) 28.Rc4–/+ Rb5 29.Re2 Rb1 30.Kf2 b5 (30...Rba1 31.Rc6 R1a6 32.Rb2–/+) 31.Rc7+= Re8 32.Rd2 Rbe1 33.Rb7 ½–½. Zschalich,Arndt (1745) – Wicklund Hansen,Richard (2025), Wch Seniors, 2004.

8.0–0 Nbd7 9.cd5 Bd5 10.Nc3 Bb7 11.d4 (11.Qc2 a6+=) 11...c5 (11...a6 12.a4=) 12.bc6+= Bc6 13.Ba6 (13.Nb5 Qe7+=) 13...Re8 (13...Qe7 14.Nb5+=) 14.Rc1+/– Nb8 (14...Qb8 15.Nb5 Bd5 16.Nd6 Qd6 17.Qa4 Bf3 18.gf3+/–) 15.Bd3 a6 (15...Bb7 16.Nb5+/–) 16.e4 e5? (better is 16...Bf4 17.Rc2 Bh6+/–) 17.de5+– Be5 (17...Re5 18.Be2 Qd7 19.Ne5 Be5 20.Nd5 Bd5 21.Be5+–) 18.Ne5 Re5 19.Nd5 Re8 (19...Rg5 20.Nf6 gf6+–) 20.Nf6 gf6 21.Qg4 Kh8 22.Qh4 (22.Qh4 Nd7 23.Rc6+–) 1–0. Bendig,Frank – Lowry,Paul, corr casual, 2001.

8.0–0 Re8 9.d3 (9.cd5 ed5 10.Qc2 c5=) 9...Qe7 (9...a6 10.Nc3=) 10.Nbd2 (10.Nc3 a6=) 10...Nbd7 (10...a6 11.cd5 ed5 12.a4=) 11.a4 (11.cd5 Nd5 (11...Bd5? 12.e4+–) 12.e4 Nf4=) 11...a6 12.Qb3 (12.cd5 Nd5 (12...Bd5? 13.e4+–) 13.Ne4 e5=) 12...Nc5 (12...e5 13.cd5 Nc5 14.Qc2 Nd5 15.Rfd1=) 13.Qc3 (13.Qc2 e5=) 13...e5 (13...ab5 14.ab5 Na4 15.Qc2 Nb2 16.Qb2=) 14.Ne5 (14.d4 ed4 15.Qd4 Red8=) 14...ab5 Black begins to deal mighty blows (14...Qe5?! 15.Qe5 Be5 16.d4+=; 14...Be5 15.Qe5 Qe5 16.Be5 Re5 17.d4+=) 15.ab5 Na4 (worse is 15...Qe5 16.Qe5 Be5 17.d4+=) 16.Ra4 Ra4 17.Ng4 Rea8 18.Ra1? (better is 18.Nf6 gf6 19.Bd1= (19.Qf6? Qf6 20.Bf6 Ra2–+)) 18...Ra1–+ 19.Ba1 Bb4 20.Nf6 gf6 (20...gf6 21.Qf6 Qf6 22.Bf6 Ra2–+; 20...Qf6?! 21.Qf6 gf6 22.Nb3–/+) 0–1. Cornacchini,Gabriele – Berch,Neil, RL–2007–0–00089, 2007.

6.c4 Nbd7

7.a4 Bb4 8.Be2 0–0 9.0–0 Rc8 10.Ba3 Qe7 11.Qb3 Ba3 12.Ra3 c5 13.bc6 Bc6 14.Nd4 Bb7 15.cd5 Nd5 16.a5 Nc5 17.Qb2 ba5 18.Ra5 a6 19.Qa3 Nd7 20.Ba6 Qa3 21.Ra3 Ba6 22.Ra6 Nc5 23.Rc6 Rc6 24.Nc6 Rc8 25.Ne5 Nb3 26.d4 Nb4 27.g4 f6 28.Nf3 g5 29.h4 h6 30.h5 Rc1 31.Nbd2 Rf1 32.Kf1 Nd2 33.Nd2 Kf7 34.Nc4 Nd5 35.Ke2 Ke7 36.Kd3 f5 37.f3 fg4 38.fg4 Nf6 39.Ne5 Ne8 40.e4 Nf6 41.Ke3 Kf8 42.Kf3 1–0. Gerold – Eissner, corr DDR/H/62, 1966.

7.a4 Bd6 8.d4 0–0 9.Nbd2 Qe7 10.Be2 Rfe8 11.0–0 dc4 12.Nc4 Nd5 13.Nd6 cd6 14.Qb3 Rac8 15.Rfc1 N7f6 16.Nd2 Qd7 17.Nc4 Rc7 18.Ba3 Rec8 19.Qb2 Ne4 20.Bd3 Nef6? (better is 20...Ndf6=) 21.Nd6+– Rc1 22.Rc1 Rc1 23.Qc1 Ne8 24.Nc4 f6 25.e4 Ndc7 26.Qc3 0–1. Johnson – Pommerel Brouwer,Wim H, CiF, 1984.

7.a4 Bd6 8.d4 c5 9.Nbd2 cd4 10.Nd4 Rc8 11.Rc1 0–0 12.Be2 dc4 13.Nc4 Bb4 14.Nd2? Ne4–+ 15.N4b3?? Ndc5 16.Rc5 bc5 17.Bc1 c4 18.Bc4 Rc4 19.0–0 Rc1! 20.Qc1 Nd2 (20...Nd2 21.Nd2 Bd2–+) 0–1. Felicione,Anthony (2095) – Russev,Rusen Iordanov (2505), Internet Section, 2004.

7.Nc3 dc4 8.Bc4 Be7 9.Be2 c5 10.Qc2 0–0 11.0–0 Qc7 12.Rfd1 Rfd8 13.Rac1 Rac8 14.d3 Nd5 15.a3 Bf6 16.Ne4 Bb2 17.Qb2 N7f6 18.Nf6 Nf6 19.Rc4 Qe7 20.Ne5 Nd7 21.f4 Qf6 22.d4 Bd5 23.Rc2 Ne5 24.fe5? Qg6 25.Bd3 Qg5 26.Re2?? Bf3 27.Rde1 Be2 28.Re2 cd4 29.Re1 Qe5 30.e4 Rc3 (30...Rc3 31.Rd1 Qf4–+) 0–1. Deilitz,Manfred – Radloff,Arno (1740), Ueckermuende op 6th, 2007.

7.Nc3 Bd6 8.cd5 ed5 9.Be2 c5 10.bc6+= Bc6 11.Nd4 Qc7 12.Rc1 Nc5?? 13.Nc6+– 0–0 14.Nb4 Rfe8 15.Nb5 Qd7 16.Bf6 gf6 17.Nd5 Be5 18.Bc4 Qd8 19.d4 a6 20.Nbc3 b5 21.Be2 b4 22.Nb4 a5 23.Nbd5 Ne4 24.de5 (24.de5 Nc3 25.Rc3 Re5 26.Bc4+–) 1–0. pcmvr (2840) – rooked (2260), net–chess.com, 2009.

7.Nc3 Bd6 8.Be2 0–0 9.0–0 Re8 10.Qc2 e5 11.cd5 Nd5 12.Nd5 Bd5 13.e4 Bb7 14.Rac1 (14.Bc4 a6=) 14...Rc8 (14...Nc5!?–/+) 15.Bc4= Nf6 16.d3 Qe7 17.Rfe1 h6 18.Qb3 Rf8 19.Nh4 Kh7 20.Nf5 Qd7 21.Re3 g6 22.Nh4 (22.Nd6!? cd6 23.Qa3+/–) 22...Ng4 23.Rg3 Bc5 24.Rf1 Rce8 25.h3 Nf6 26.Qd1 (better is 26.Rf3!? Kg7 27.Qd1+=) 26...Nh5+= 27.Rf3 Qe7 28.g3 Ng3 29.Rg3 Qh4 30.Qf3 Qf4 31.Qg2 Re7 32.Bc1 Qf6 33.Kh1 c6 34.a4 cb5 35.ab5 Bd6 36.Rf3 Qg7 37.h4 (37.Bd2 f5 38.Rc1 fe4 39.Rf8 e3–+ (39...Qf8?! 40.de4 Rc7 41.Kg1–/+)) 37...f5 38.Bd5 (38.Bb3!? Rc7–+) 38...Bd5 39.ed5 Rc7 40.Be3 f4 41.Bc1 Rfc8 (41...Rc2 42.Rd1–+) 42.Qg1? (42.Bb2 Rc2 43.Ba1–+) 42...Qf6 43.Rh3 (43.Bb2 Qh4 44.Qh2 Qh2 45.Kh2–+) 43...Qf5 44.Kh2 (44.Rh2 Qd3 45.Bb2 Rc2–+) 44...f3 45.Qh1 (45.Ba3 Ba3 46.Qg3 Qd3 47.h5 Qf1 48.Qg6 Kh8 49.Rf3–+) 45...e4 46.Rg3 Bg3 (46...Qg4 47.Qg2 fg2 48.Rd1 g1Q 49.Kg1 Bg3 50.Bd2 Qd1 51.Be1 Qe1 52.Kg2 Qf2 53.Kh3 Bh4 54.de4 Qg3) 47.fg3 Rc2 48.Kg1 Rc1 49.de4 (49.Rc1 Rc1 50.Kf2 Rc2 51.Kg1 Qd5 52.Qg2 Rg2 53.Kh1 Qd3 54.g4 Qd1) 49...Rf1 0–1. Purczynski,Andrzej – Jablonski,G, 23rd Poznan Open, 2015.

7.Nc3 Be7 8.cd5 ed5 9.a4 0–0 10.Be2 Re8 11.0–0 Nc5 0–1. emmasdad – UncleBulgaria, ChessWorld.net, 2015.

7.Nc3 Be7 8.cd5 ed5 9.Be2 0–0 10.0–0 c5 11.bc6 Bc6 12.Nd4 Bb7 13.Nf5 Re8 14.Nb5 Nc5 15.Ne7 Qe7 16.Bf6 gf6 17.Bg4 Kh8 18.d4 Ne4 19.Rc1 Rg8 20.Rc7 Qb4 21.Rf7 Qb5 22.Rb7 Nc3? (better is 22...Qc6 23.Re7 Rg5+–) 23.Qc2 Rg4 (23...Rg6 24.Bh5 Rh6 25.Qc3 Rh5+–) 24.Qh7# (24.Qc3?! Rg2 25.Kg2 Rg8 26.Kf3 Qf1+=) 1–0. BlackDemon (2645) – Mempawah (1785), FICS rated standard game, 2013.

7.d4 Bb4 8.Nbd2 Ne4 9.Be2 Ndf6 10.0–0 0–0 11.a3 Bd6 12.Nb3 a6 13.a4 dc4 14.Bc4 ab5 15.ab5 Ra1 16.Ba1 Qa8... Pennell – Gray, North Carolina 1980.

7.d4 dc4 8.Bc4 Bb4 9.Nc3 Ba5 10.0–0+= 0–0 11.Qe2 Ne4 12.Ne4 Be4 13.Ba3 Re8 14.Rac1 Qf6 15.Bd3 Bd3 16.Qd3 Rac8 17.Rc6 Nb8 18.Rc2 Rcd8 19.Rc7+– Rd7 20.Rfc1 Red8? 21.Ne5 Rc7 22.Rc7 g6 23.Be7 Qf5 24.Qf5 ef5 25.Bd8 (25.Bd8 Bb4 26.Bf6+–) 1–0. pierre – imadov1985, internet, 2008.

7.d4 dc4 8.Bc4 Bb4 9.Nc3 Ne4 10.Qb3 Qe7 11.0–0 Nc3 12.Bc3 Bc3 13.Qc3 Bf3 14.gf3 0–0 15.Kg2 Rac8 16.Bd3 g6 17.f4+= Nf6 18.Qc4 Nd5 19.Rg1 Qh4 20.h3 f5 21.Be2 Kg7 22.Bf3 Rfd8 23.Rac1 Kh6 24.Qa4 Rg8 25.Rc6 Rce8 26.Qc4+– Qe7 27.Bd5 ed5 28.Qd5 Qa3 29.Qf5 Qa2 30.Qg5 (30.Qg5 Kg7 31.Qf6 Kh6 32.Rc7 Re5 33.de5 Qd5 34.Kh2 Qd8 35.Qg5 Qg5 36.fg5 Kh5 37.Rh7#) 1–0. pierre – hijran, internet, 2009.

7.d4 c5 8.bc6 Bc6 9.cd5 (9.Ba3 Ba3 10.Na3 0–0=) 9...Nd5 10.Nbd2 Bb4 11.Bd3 N7f6 (11...0–0 12.Bh7 Kh8 13.Bd3+=) 12.Ne5 Bb7 13.Bb5 Ke7 14.0–0 Nc3 (14...Ne3 15.fe3 Qd5+–) 15.Qb3+= (15...Nb5 16.Qb4 Nd6 17.Rfc1+=). Bendig,Frank – Garcia, corr SOK–91–75, 1992.

7.d4 c5 8.Bd3 dc4 9.Bc4 cd4 10.Bd4 Rc8 =.

7.d4 c6 8.Nc3 cb5 9.cd5 Nd5=+ 10.Bb5 Bb4 11.Rc1 0–0 12.0–0 N7f6 13.Ne2 a6 14.Bd3 b5 15.Ng3 Bd6=+ 16.e4 Nf4 17.Bb1= Bc7 18.d5 ed5+= 19.Bf6 gf6 20.Nh4 Kh8 21.Qc2 Be5 22.Rfd1 d4 23.Nhf5=+ Rc8 24.Qb3 Rc1 25.Rc1 d3 26.Rd1= Qa8 27.Bd3+= Nd3 28.Qd3+/– Bg3?? 29.Qg3+– Rg8 30.Qd6 Be4 31.Qf6 (31.Qf6 Rg7 32.Qg7#) 1–0. Wall,Bill – Cheryl, internet, 2005.

7.d4 Bd6 8.Bd3 0–0 9.Nbd2 Ne4 10.0–0 Re8 11.a4 e5 12.Be4 de4 13.Ne5 Ne5 14.de5 Be5 15.Be5 Re5 16.Qe2 Bc8 17.f3+= Rh5 18.Ne4+/– Rh6 19.Rfd1 Qh4 20.g3 Qe7 21.Nc3 Bb7 22.e4 f5 23.e5 f4 24.gf4 Rg6 25.Kh1 Rf8 26.Nd5 Qh4 27.a5+– c6 28.bc6 Bc6 29.ab6 ab6 30.Ra7 Bd5 31.cd5 Qf4 32.d6 Rd8 33.d7 Kf7 34.Rc7 Ke7 35.Qe4 Qg5 36.f4 Qg4 37.Qb4 Kf7 38.Qc4 Ke7 39.Qf1 b5 40.Rd3 Qf5 41.Rd4 h5? 42.Qb5+– h4 43.Qb4 Kf7 44.Qc4 Ke7 45.Qc5 Kf7 46.Qd5 Ke7 47.Rc8 Rd7 48.Qc5 Ke6 49.Re8 (49.Re8 Re7 50.Qe7#) 1–0. Tabor,James – Young,Lee, CompuServe, 1994.

7.d4 Ne4 8.Bd3 Bb4 9.Nbd2 Nd2 10.Nd2 dc4 11.Bc4 Bg2 12.Rg1 Be4 13.a3 (13.Rg7 Bg6 14.d5 e5=) 13...Ba5 (13...Bd2 14.Qd2 Rg8 15.d5+=) 14.Rc1 (14.Rg7 Bg6 15.d5 e5=) 14...g6 15.d5 e5 16.Bc3 Bc3 17.Rc3 Nc5 18.Qg4? (better is 18.Ne4!? Ne4 19.Rc2+=) 18...Bd5–+ 19.Nb3 Bc4 20.Qc4 Nb3 21.Qc6 Kf8 22.Rb3 Kg7 23.Ke2 Re8 24.Rd1 Qh4 Black plans e4 25.Rbd3 Qh5 (25...Qh2? 26.Rh1 Qh1 27.Qh1+–) 26.Ke1 e4 27.Rd7 Qh2 28.Rf7 Kf7 29.Rd7 Attacks the backward pawn on c7 29...Kg8 30.Qd5 Kh8 31.Qf7 Qh1 32.Kd2 Qh6 33.Qf6 Kg8 34.Qf7 ½–½. Mittelstaedt,Joel – Adiyaman,Rene, GER–chT U12 Leipzig, 2008.

7.cd5 ed5 8.Nc3 Bd6 9.d4 a6 10.a4 0–0 11.Bd3 ab5 12.ab5 Qe7 13.0–0 Ra1 14.Ba1 Ne4 15.Qc2 Ra8 16.h3 Ndf6 17.Nd2 Nd2 18.Qd2 Ne4 19.Ne4 de4 20.Bc4 Qg5 21.Bc3 Ra4 22.Be2 Bd5 23.Ra1 Ra1 24.Ba1 f5 25.Bc3 (25.Qc3!?+=) 25...f4–/+ 26.Bf1 h5 27.Qe1 h4 28.Bd2 f3 29.Kh1 fg2 30.Bg2 Qe7 31.Kg1 Kh7 32.Bc3 Kh6 33.Qd2 Qd7 34.Qe2 Qf5 35.Qg4? The isolani on e4 becomes a target (better is 35.Qe1+=) 35...Qg4–+ 36.hg4 Kg5 37.Bh3 Bc4 38.f4?? (better is 38.Bg2 Bd3 39.f3–+) 38...ef3 39.Kf2 Bd5 40.Bd2 (40.e4 Be4 41.Bd2 Kg6 42.Bf1–+) 40...Bg3 41.Kf1 Bc4 0–1. cristero (2460) – pierred (2850), net–chess.com, 2015.

7.cd5 ed5 8.Nd4 Be7 9.Nc6 Bc6 10.bc6 Nb8 11.Qa4 Qd6 12.Ba3 Qc6?? 13.Bb5+– (13.Bb5 Qb5 14.Qb5 c6 15.Qb3+–).

7.cd5 Bd5 8.Nc3 Bb7 9.d4 Ne4 10.Ne4 Be4 11.Rc1 Bb4 12.Nd2 Qg5 13.Bc3+/– Bc3 14.Rc3 Bb7 15.Rc7 Rb8 16.Nc4 Bg2 17.Rg1+– Qd8 18.Rd7! Qd7 19.Bg2 0–0 20.Bc6 Qe7 21.a3 Rfd8 22.Qg4 g6 23.h4 Rbc8 24.h5 Qf6 25.Rg3 Rc7 26.hg6 hg6 27.Ne5 Rdc8 28.Rf3 Qg7 29.Nf7 Rf7 30.Qe6 Rd8 31.Be8 Re8 32.Qe8 Qf8 33.Qf8 Rf8 34.Rf8 Kf8 1–0. marekt – bolaf, ChessWorld.net, 2003.

7.cd5 Bd5 8.Nc3 Nc5 9.Nd5+= Nd5 10.Bc4 f6 (10...Bd6 11.0–0 0–0 12.d4+/–) 11.0–0 Be7 12.Nd4 Qd7 (12...Qd6 13.Ne6! Qe6 14.Qh5 g6 15.Qd5 Qd5 16.Bd5+/–) 13.Ne6! Qe6 (13...Ne6 14.Qh5) 14.Qh5 g6 15.Qd5 Qc8?? (better is 15...Qd5 16.Bd5 0–0–0+/–) 16.Qf7 (better is 16.Bf6 Rf8 17.Bg7+–) 16...Kd7 (16...Kd8 17.Bf6 Re8+–) 17.Bf6 Qe8 18.Qd5 Bd6 19.Qc6 Kc8 20.Qa8 Kd7 21.Qc6 Kc8 22.Bh8 Nd7 23.Bd5 Kd8 24.Qa8 Ke7 25.Bc6 Qa8 26.Ba8 Nc5 27.d4 (27...Ne6 28.e4+–) 1–0. De Visser,A – Fischer,W, corr ICCF, 1986.

7.cd5 Bd5 8.Be2 Be7 9.0–0 0–0 10.d3 Qc8 11.e4 Bb7 12.Nbd2 Rd8 13.Nb3 Nf8 14.Qc2 c5 15.bc6 Qc6 16.Qb1 Ba6 17.Nbd4 Qb7 18.Rc1 Rac8 19.Rc8 Rc8 20.Qf1 N8d7 21.a4 Bc5 22.Nb3 Bb4 23.Rc1 Rc1 24.Qc1 Ne4! 25.de4 Be2 26.Qg5 Bf8 27.Nfd2 Bd1 28.Nd4 Ba4 29.Qd8 Qb8 30.Qg5 Qd6 31.N4f3 Qc5 32.Nf1 Qg5 33.Ng5 Be7 34.Nf3 Bc6 35.N1d2 Bb4 36.Kf1 Bd2 37.Nd2 Nc5 38.f3 Bb5 39.Kg1 a5 40.Bd4 Nd7 41.Kf2 a4 42.Nb1 f5 43.e5 Bc6 44.Ke3 b5 45.Kd2 Nb8 46.Kc3 Na6 47.Kb2 Nb4 48.Bc3 Nd5 49.Bd2 f4 50.Ka3 g5 51.g3 h5 52.gf4 gf4 53.Be1 Ne3 54.Bf2 Nc4 55.Kb4 Ne5 56.Bd4 Nf3 (56...Nf3 57.Bc3 Kf7–+) 0–1. Niephaus,Friedel – Ruf,Walter, Bad Woerishofen Seniors op, 1996.

7.Be2 Bb4 8.0–0 0–0 9.d4 dc4 10.Bc4 h6 11.Nbd2 c6 12.a4 cb5 13.ab5 Qc7 14.Qb3 Bd6 15.Rac1 Qb8 16.h3 a6 17.ba6 Ba6 18.Be6 fe6 19.Qe6 Kh8 20.Ne5 Be5–+ 21.de5 Re8 22.Qf7 Ne5 23.Be5 Qe5 24.Nf3 Qe7 25.Qb3? Bf1 26.Rf1 Rab8 27.Nh4 Qe4 28.g3 b5 29.Rd1 Rbd8 30.Rf1 g5 31.Qf7 gh4 32.Qf6 Kh7 33.Qf7= Kh8 34.Qf6 Kg8 35.Qh6 Qh7 36.Qg5 Qg7 37.Qh4 Re5?? 38.Qd8+– Kh7 39.Rb1 Re3 40.Qh4 Kg8 41.fe3 (41.fe3 Qe5 42.Qd8 Kh7 43.Qd3 Kg7 44.Kg2+–) 1–0. florenc1330 (1915) – hanssklos (1815), kurnik, 2011.

7.Be2 Bb4 8.Qc2 0–0 9.a3 (9.Nd4 dc4 10.Nc6 Bc6 11.bc6 Nb8 12.Qc4 a5+=) 9...Bc5 (9...Bd6 10.cd5 Nd5 11.Nc3=) 10.Ng5 (10.cd5 Nd5 11.Nc3 N5f6=) 10...h6 (better is 10...dc4 11.Bc4 a6=+ (< 11...Bg2 12.Rg1 Bb7 13.Nh7=)) 11.h4? (11.Nf3!?=+) 11...dc4 (11...hg5 12.hg5 Ne4 13.cd5 ed5 14.d3 Ng5 15.f4–+) 12.Bc4 Bd5 (better is 12...Bd6!?–/+) 13.Bd5= ed5 14.a4? (14.Nf3 a6 15.a4 ab5 16.ab5 Qe7=) 14...Re8 15.f4 d4–/+ 16.Kf2?? de3–+ 17.de3 Be3 18.Kf1 Bf4 19.Nf3 Be5 20.Be5 Ne5 21.Nbd2 Nf3 22.Nf3 Qe7 23.Re1 Qc5 24.Re8 Re8 (25.Qc5 bc5–+) 0–1. kiki2 – Zarkon2, Live Game Caissa's Web, 2005.

7.Be2 Bb4 8.Qc2 a6 9.a3 Bd6 10.cd5 Bd5 11.Nc3 =.

7.Be2 dc4 8.Bc4 a6 9.0–0 =.

7.Be2 dc4 8.Bc4 Nc5 9.d4+= Nce4 10.a3 Ng4 11.0–0+= Qf6 12.Qe2 Ng5? 13.Ng5?? Qg5+= 14.f4 Qg6 15.Bd3 f5= 16.Bc1 Be7 17.Nc3 Bh4 18.e4 0–0 19.Rf3 Bf6 20.e5= Bf3 21.Qf3 Bh4 22.g3 Rad8 23.d5 Be7 24.Na4? Rd5 25.Bb2? Rfd8 26.Bc4 Rd2 27.h3 Nh2 28.Qb3 R2d3! 29.Bd3 Rd5 30.Kh2+– Bh4 31.gh4 Qh5 32.Rg1 Qf3 33.Rg3 Qf2 34.Rg2 Qf4 35.Kh1 Qf3 36.Bc4 Rd1 37.Kh2 Qf4 38.Qg3 (38.Qg3 Qg3 39.Kg3+–) 1–0. Schwichtenberg,Juergen (1910) – Wibe,Per H (1805), 7th ch–Euro Senior, Hockenheim GER, 2007.

7.Be2 dc4 8.Bc4 Be7 9.0–0 0–0 10.d4 (10.Bf6 Nf6 (< 10...gf6 11.d4+=) 11.d4 c6=+) 10...c5 (10...a6 11.Ba3=) 11.bc6 (11.Nc3 cd4 12.Nd4 a6=) 11...Bc6=+ 12.Nbd2 Nd5 (12...Rc8 13.Rc1=+) 13.e4= Nf4 14.Rc1 Rc8 15.Qb3 Nf6 (15...Bd6 16.Rfd1=) 16.Ba6 (16.g3 b5 17.Bb5 Nh3 18.Kg2 Bb5 19.Qb5 Rb8+=) 16...Rc7 (16...Qd6=) 17.d5 (17.Qe3 Qd6 18.e5+–) 17...ed5–/+ 18.Be5 (18.Nd4 Qd6 19.Nc6 Rc6+–) 18...Bd6 19.Bd6 Qd6 20.e5 Qe6 21.ef6 Qg4 (21...Qf6!? 22.Rfe1 Rd8+/–) 22.g3+– d4 (better is 22...Re8+–) 23.Rc6 Rc6 24.Ne5 Nh3 25.Kg2 Nf4 26.Kh1 (26…Qe6 27.fg7+–) 1–0. Lorentzen,Oeystein – Kupec, corr 3GMM–10, 1995.

7.Be2 dc4 8.Bc4 Be7 9.0–0 0–0 10.d4 Bd5 11.Nbd2 c6 12.Ne5 Bd6 13.bc6+/– Nb8 14.e4 Ne4+= 15.Bd5 ed5 16.Ne4 de4 17.d5 Qc7 18.Qh5 g6? 19.Ng4+– f6 20.Qh4 (20.Qh4 Be7 21.Bf6 Bf6 22.Nf6 Kh8 23.Ne4+–) 1–0. Dziedzic,Andrzej – Kupec,Jan, corr 3GMM–09, 1996.

7.Be2 c6 8.a4 Bd6 9.0–0 0–0 10.bc6 Bc6 11.cd5 Bd5 12.Nc3 Bb7 13.Nb5 Be7 14.d4 a6 15.Nc3 Rc8 16.h3 Bb4 17.Qb3 a5 18.Nb5 Bd5 19.Qd1 Bc4 20.Ba3 Ba3 21.Na3 Bd5 22.Nb5 Ne4 23.Bd3 Nc3 24.Nc3 Rc3 25.Bb5 Bc4 26.Bc4 Rc4 27.Qe2 Qc7 28.Qb2 h6 29.Qb5 Qc6 30.Qc6 ½–½. mr5reasons1 (1645) – borisrub (1670), gameknot.com, 2012.

7.Be2 Bd6 8.a4 0–0 9.a5 dc4 10.Bc4 Bf3 (10...a6!? 11.ba6 Ba6 12.Ba6 Ra6 13.ab6 Ra1 14.Ba1 Nb6=) 11.Qf3= Ne5 12.Be5 Be5 13.d4 Bd6 14.0–0 ba5 15.Ra5 (15.Nc3!?+=) 15...c5= 16.Ra4 cd4 17.ed4 Qc7 18.h3 Nd7 (18...Qb6 19.Bd3=) 19.Bd3 (19.Rc1 Nb6 20.Qd1 Na4 21.Qa4 Rfd8–+) 19...Nb6 20.Ra2 Rfd8 21.Qe4 g6 22.Rc2 Qb8 (22...Qd7 23.Nd2=) 23.Nd2 Nd5 24.Be2 Bc7 25.Nf3 Nf6 26.Qh4+= Kg7 27.g4 h6= 28.g5 hg5 29.Qg5 Bf4 30.Qg2 Rh8 31.Ne1 Rh6 32.Nd3 Nd5 33.Bf3 Qb5–/+ 34.Bd5 Qd3 35.Be4 Qb3 36.Qg4 f5?? 37.Qf4+– fe4 38.Rc7 (38...Kh8 39.Qh6 Kg8 40.Qg7#) 1–0. Wessel,Volkmar – Peter,Klaus, Schleswig Holstein–chG, 1990.

7.Be2 Bd6 8.d4 0–0 9.0–0 Ne4 10.g3 (10.Qc2 c5=) 10...f5 11.Nbd2 Ndf6 12.a4 Qe7 13.Ne5 Bb4 14.Ne4 Ne4 15.Qc2 Rf6 16.f3 Ng5 17.h4 (better is 17.cd5!? ed5 18.Bd3+/–) 17...Nf7= 18.Nd3 Rg6 19.Kf2 (19.Nb4?? Qh4 20.Bd1 Qg3 21.Kh1 Rh6 22.Qh2 Rh2) 19...Bd6 20.f4 dc4 21.Qc4 Bd5 22.Qc3 Qf6 (22...a6 23.Rfc1+=) 23.Bf3 Nh6 (better is 23...Bf3!? 24.Kf3 a6=) 24.Ne5+= Be5 25.de5 Qd8 26.h5 Ng4 27.Kg2?? (better is 27.Kg1 Rh6 28.Rad1+/–) 27...Rh6 (better is 27...Bf3 28.Rf3 Rh6–/+) 28.Rh1?? (better is 28.Rfd1 Bf3 29.Kf3=) 28...Bf3–+ 29.Kf3 Qd5 30.Ke2 Qg2 31.Kd3 Rd8 (31...Nf2 32.Kc4 Nh1 33.Kb3 Ng3 34.Qc7 Qd5 35.Qc4–+) 32.Kc4 Qe4 (32...Qg3?! 33.Kb3–+) 33.Kb3 Rd3 0–1. Huelle,Gunter – Ferkingstad,Sjur (2095), Leipzig VfB op, 2003.

7.Be2 Bd6 8.cd5 Bd5 9.Nc3 Bb7 10.0–0 Ng4 11.h3 Nh6 12.Qc2 0–0 13.a4 Nf5 14.a5 ba5 15.Ra5 Nb6 16.Rfa1+/– Nh4 17.Nh4 Qh4 18.Ra7 Rab8 19.Ba3 Qg5 20.Ne4 Be4 21.Qe4+– Nd5 22.Bd6 cd6 23.R1a6 Rb5?? 24.Bb5 1–0. pcmvr (2865) – chips (2170), net–chess.com, 2008.

7.Be2 Be7 8.0–0 0–0 9.Nd4 dc4 10.Bc4 Ne5 11.Ne6 fe6 12.Be5 Bd5 13.Qe2 Bd6 14.Bd4 Kh8 15.a4 e5 16.Bd5 Nd5 17.Bb2 Qh4 18.Nc3 Nf6 19.Rac1 e4 20.h3 Rae8 21.Rc2 Re5 22.d4 Rg5 23.Kh1 Ng4 24.Ne4 Nf2 25.Rf2 Qe4 26.Rf8 Bf8 27.Rc7 h5 28.Bc1 Bd6 29.Ra7 Rg3 30.Kg1 Qg6 31.Ra8 Kh7 32.Rd8 Bc7 33.Rc8 Bd6 34.Kh1 Rg5 35.e4 h4 36.Bg5 Qg5 37.e5 Bb4 38.Qe4 1–0. Machete99 – guest2055, ICC, 2002.

7.Be2 g6 8.0–0 Bg7 9.d4 0–0 10.Nbd2 h5 11.a4 a5 12.Nb3 Ne4 13.Qc2 c6 14.Bd3 Nd6 15.c5 bc5 16.dc5 Nf5? 17.b6 Bb2 18.Qb2 Qe7 19.Bf5 ef5 20.Rac1 Qe4 21.Nbd4 Ba6 22.Rfd1 Bb7 23.Nd2 Qe5 24.Qc3 Nf6 25.N2b3 Ng4 26.g3 h4 27.Na5 hg3+/– 28.hg3?? Qb8?? 29.Nac6+– Bc6 30.Nc6 Qb7 31.Nd4 Ra4 32.Rb1 Ra2 33.c6 Qa6 34.Rb2 Ra1 35.Ra1 Qa1 36.Kg2 Kg7 37.Nf3 f6+– 38.b7 Rh8 39.Ng1 Rh2 40.Kf3 Qg1 41.b8Q Rf2 (41...Rf2 42.Rf2 Qf2; 41...Qf2 42.Rf2 Rf2) 0–1. carocan (1835) – haqa58 (1780), kurnik, 2011.

7.d4 Be7

8.Nbd2 Ne4 9.Be2 0–0 10.0–0 Ndf6 11.a4 a6 12.Qb3 a5 13.Ba3 Ba3 14.Qa3 Qd6 15.Qd6 cd6 16.Rac1 Rac8 17.Ne4 de4 18.Nd2 Rfd8 19.Rfd1 Kf8 20.Nb3 Ke7 21.c5 (better is 21.Kf1!?=) 21...dc5–/+ 22.dc5 Bd5 23.Nd4? (better is 23.Nd2!? Rc5 24.Rc5 bc5 25.Rc1–/+) 23...bc5–+ (23...Rc5?! 24.Rb1–+) 24.Nc2 Bb3 25.Rd8 Rd8 26.Na3 Rd2 27.Bf1 Nd7 28.Nc4 Bc4 29.Rc4 Kd6 (29...f5!? 30.g4–+) 30.Re4–/+ Nb6 31.g3 (31.g4 Ra2–+) 31...Rc2 (31...g5 32.Bc4–+) 32.Kg2 (32.Rf4 f6–/+) 32...c4 33.h4 (33.Rg4!?–/+) 33...e5 34.Kf3?? (better is 34.Rg4 g6 35.h5–+) 34...f5 (34...Na4?! 35.Rc4 Rc4 36.Bc4+=) 0–1. Toll,Anatoly – Aguayo,Pablo, Dos Hermanas Internet qual–E, 2009.

8.Be2 0–0 9.0–0 Ne4 10.a3 f5 11.Qd3 Bf6 12.Nc3+= Nc3 13.Bc3 dc4 14.Qc4 Bd5 15.Qb4 Be7 16.Qb2 Bf6 17.Nd2 Qe8 18.Bf3 Bf3 19.Nf3 a5 20.Rfc1 Rc8 21.Rc2 Rf7 22.Rd1 c5 23.bc6 Rc6 24.Rdc1 Nf8 25.Qb5 Qc8 26.Kf1 Rfc7= 27.Qb2 Nd7 28.Ke1 Kf7 29.Kd1 Ke7 30.h4 Kf7 31.Ng5 Bg5=+ 32.hg5 g6 33.f4 Qd8 34.Rd2 Nf8 35.Qb3 Qd5 36.Qd5 ed5 37.Bb2 Rc1=+ 38.Bc1 Ke6 39.Rc2 Kd7 40.Rc7= Kc7 41.Kc2 b5=+ 42.Bd2 Kb6 43.Kd3 Ne6 44.Ke2 Ng7 45.Kf3 Ka6 46.g4=+ fg4 47.Kg4 Nf5 48.Kf3 Nd6 49.Ke2 Nc4 50.Bc1 Kb6 51.Kd3=+ Nd6 52.Kc2 Kc6 53.Kb3 Kb6 54.Bd2 Nc4 55.Bc1 ½–½. Bartle,Georg – Mellenthin,Horst, 18 sen. DSen EM (GrB) op, 2006.

8.Be2 0–0 9.0–0 Ne4 10.Nc3 f5 11.cd5 ed5 12.Ne5 Bg5 13.f4 Bh6 14.Ne4+/– fe4 15.Ng4 Rf7 16.Nh6 gh6 17.Qe1 Rg7 18.Rc1 Nf8 19.g4 Qf6 20.Kh1 Rc8 21.Rc2 Qe7 22.Qg3 Kh8 23.Rfc1 Ne6 24.h4 Qd6 25.Kh2 Nd8 26.Rc3 Qd7 27.Ba3 Ba8 28.Bf8 Rf7 29.Bh6 c5 30.bc6 Rc6 31.Bb5 Rc3 32.Bd7 Rc1 33.f5 Rd7 34.Qe5 Kg8 35.Qe8# 1–0. Rohrbacher,W – Muensch,K, 1994.

8.Be2 0–0 9.0–0 Ne4 10.Nbd2 Ndf6 11.Qc2 c5 12.dc5 Nc5= 13.Rfd1 Rc8 14.Rac1 Nfe4 15.Bd4 Bf6 16.Nf1 Qe7= 17.cd5 Bd5 18.Qb2 Na4=+ 19.Bf6 gf6 20.Qa1 Nac3 21.Re1 Qa3 22.Bd3 Qa2 23.Qa2 Na2 24.Ra1 Nec3 25.Ng3? Nb4–+ 26.Bb1 Nb5 27.Nh5 f5 28.e4 fe4 29.Be4 Rc4 30.Ng5 h6 31.Nf6 Kg7 32.Bd5 ed5 33.Ngh7 Rfc8 34.h3 Nc2 35.Kh2 Na1 36.Ra1 R4c6 (36...R4c6 37.Rb1 Nc3–+) 0–1. Durka,J – Machycek,L, Tatranske Zruby SVK, 2006.

8.Be2 0–0 9.0–0 Re8 10.Nbd2 c6 11.cd5 cd5 12.Qa4 a6 13.ba6 Bc8 14.Ne5 Nb8? (better is 14...Ba6 15.Ba6 Nb8=) 15.a7+– Nbd7 16.Nc6 Qc7 17.Rac1 Qb7 18.Bb5 Nf8 19.Nf3 N8d7 (19...Ng6 20.Qc2+–) 20.Rc2 (better is 20.Ne7 Re7 21.Qa3+–) 20...Ne4? (better is 20...Bd6+–) 21.Ne7 Re7 22.Ba3 Ra7 (22...Ndc5 23.dc5 bc5 24.Bc5 Nc5 25.Rc5 Bd7+–) 23.Rc8! (23.Be7?! Ra4 24.Ba4 Nf8 25.Bf8 Kf8+–) 23...Qc8 (23...Nf8 24.Be7 Qe7 25.Qb3+–) 24.Qa7 Nc3 25.Rc1 Ne2 (25...f6 26.Be7 Ne2 27.Be2 Qc1 28.Ne1 Qe1 29.Bf1 Nf8+–) 26.Be2 Qc1 27.Bc1 (27.Bc1 f6 28.Bb5+–) 1–0. Janek – Jerry, internet, 2016.

8.Be2 c5 9.bc6 Bc6 10.Nc3 Bb7 11.Rc1 0–0 12.0–0 Rc8 13.cd5 ed5 14.Qb3 Nb8 15.Ne5 Ne4 16.Ne4+/– de4 17.Rc8 Qc8? 18.Rc1+– Qd8 19.Bc4 Qe8 20.Bf7 Rf7 21.Rc7 Kf8 22.Rb7 (22.Rb7 Nc6 23.Nc6 Qc6 24.Rb8 Bd8 25.Rd8 Ke7 26.Rh8+–; < 22.Qf7 Qf7 23.Nf7 Bd5+–) 1–0. tracy – due, internet, 2011.

7.cd5 Nd5

8.Nc3 Nc3 9.Bc3 c6 =.

8.Bc4 a6 9.ba6 Ba6 10.Ba6 Ra6 11.0–0 =.

8.Bc4 N7f6 9.0–0 Bd6 10.d3 Ne7 +=.

8.Bc4 N7f6 9.0–0 Bd6 10.Re1 Nb4 =.

8.Bc4 N7f6 9.0–0 Bd6 10.Re1 Qd7?? 11.e4+– (11...Ne4 12.Re4+–) 1–0. Bonetti,Shane – bluesangel, ICC, 2003.

8.Bc4 N7f6 9.0–0 Be7 10.d3 +=.

8.Be2 N7f6 9.0–0 Be7 10.Nc3 0–0 11.a4 c5 12.Rc1 Qc7 13.h3 Rad8 14.Qb3 Nc3 15.Bc3 Ne4 16.Be5 Bd6 17.Bd6 Qd6 18.Rfd1 Qb8 (18...e5 19.d3 Nf6 20.Qc2=) 19.d3 Nf6 20.Ne1 Rd7 21.Bf3 Bf3 22.Nf3 Rfd8 23.d4 cd4 24.Nd4 Ne4 25.Nc6 Rd1 26.Rd1 Rd1 27.Qd1 Qc7 28.Qd4 (28.Na7 Nc3 29.Qb3 Ne2 30.Kf1 Ng3 31.fg3 Qa7+/–) 28...Nc5 (28...f5 29.Qc4 Nc5 30.a5+=) 29.a5 (29.Na7!? e5 30.Qd5+/–) 29...h6+= 30.ab6 ab6 31.Kf1 Kf8 (31...Kh7 32.Qd1=) 32.f3 Nd7 33.Kf2 Nf6 34.Qb4 Ke8 (34...Kg8 35.e4+=) 35.e4 (better is 35.Qa3 e5 36.Qa8 Kd7 37.Qf8+–) 35...Qd7?? (35...Ng8 36.Qd4 Kf8 37.e5+=) 36.Ke3?? (better is 36.Qa3 Ne4 37.fe4+–) 36...g5?? (better is 36...Ng8+/–) 37.Qa3+– Qc7 (37...Nd5 38.ed5 f6 39.Qa8 Kf7 40.Nd8 Kg6 41.Ne6+–) 38.Qa8 Kd7 39.Qf8 Qf4 (39...e5 40.Qe7 Kc8 41.Qf6+–) 40.Ke2 Qc7 41.Qf7 (41...Kc8 42.Qf6+–) 1–0. Zielke,Bernd (1640) – Howe,Dietrich, It (open) Kiel (Germany), 2006.

8.Be2 N7f6 9.0–0 Be7 10.Nc3 0–0 11.Rc1 Rc8 (11...a6 12.Nd5 Nd5 13.a4=) 12.Ne5 (12.Nd5 Bd5 13.Ne5 Bd6+=) 12...Bd6 (12...c5 13.Qa4=) 13.Nd5+= Bd5 (13...Be5 14.Ne7 Qe7 15.Be5+=) 14.Nc6 Bc6 15.Rc6 Nd7 16.d4 Nb8 17.Rc2 c6 18.a4 c5 (18...Qh4 19.g3 Qg5 20.f4+=) 19.Qd3 Qe7 20.f4 cd4 21.Bd4 Rc2 22.Qc2 Nd7 23.Bf3 (23.Bd3 h6+=) 23...Bc5= 24.Rd1 Bd4 25.Rd4 Nc5 26.Bc6 e5 27.fe5 Qe5 28.Qf2 g6 (28...Ne6 29.Rd1=) 29.Qf4+= Qe7 30.Kf2 (30.Qg3 Rd8=) 30...Ne6= 31.Re4 Qc5 32.Qe5? (32.Qf6 Rd8=) 32...Qc2?? (better is 32...Ng5–+) 33.Kg3= Qd2 (33...Nc5 34.Rh4=) 34.Bd5+= Ng7 35.Qd4?? (better is 35.Kh3 Re8 36.Qd4+=) 35…Nf5–+ (36.Kf3 Nd4 37.Rd4 Qe1–+) 0–1. Kucharkowski,Jens – Richter, Freital, 1986.

6.c4 Ne4

7.Qb3 f5 8.d3 Nc5 9.Qc2 dc4 10.dc4 Bf3 11.gf3 Qh4 12.Nd2 Nbd7 13.Bg2 Rd8 14.0–0 Bd6 15.f4 Rg8 16.Nf3 Qh6 17.Ne5 Ne5 18.fe5+= Be7 19.f4 Ne4 20.Be4 fe4 21.Rf2 Bc5 22.Qe2?? Rd3 23.Bc1 g5 24.f5 ef5–+ 25.Rf5 g4 26.Bd2?? g3 27.Raf1 gh2 28.Kh1 Be3 29.Be3–/+ Re3 30.Qf2?? Rf3 31.Rf3=+ ef3 32.Qf3 Rg1 33.Rg1 hg1Q 34.Kg1 Qc1 35.Kh2 Qh6 36.Kg3 Qg5–/+ 37.Kf2 Qe5 38.Qc6 Ke7 39.a4 Qd6?? 40.Qe4=+ Qe6 41.Qh7= Qf7 42.Qf7 Kf7 43.Ke3 Ke6 44.Ke4 Kd6 45.Kd4 c6 46.Kd3 c5 47.Ke4 Ke6 48.Kf4 Kf6 49.Ke3?? Ke5–+ 50.Kd3 (50.Kd3 Kf4 51.Kc2–+). carocan (1775) – anka7173, kurnik, 2011.

7.Nc3 f5 8.Ne5+= dc4?? 9.Ne4+– Be4 10.Qh5 g6 11.Ng6 hg6 12.Qg6 Kd7 13.Bh8 Bb4 14.Bf6 Qf8 15.Bc4 Bd2 16.Ke2 Bb4 17.Be6! Kd6 18.Rad1 Kc5 19.Qf5! (19.Qf5 Bf5 20.Rd5 Kc4 21.Rf5#) 1–0. wiking – ezekiel4a21, internet, 2010.

6.c4 Be7

7.a4 0–0 A) 8.Be2 A1) 8...c6 9.0–0 a6 10.d3 Bd6 11.Nbd2 c5 12.d4=; A2) 8...dc4 9.Bc4 a6 10.0–0 c6 11.d3 ab5 12.ab5=; A3) 8...c5 9.Na3 (9.0–0 a6 10.d4 dc4 11.Bc4 cd4 12.Bd4=) 9...a6 10.0–0 Bd6 11.d4 Ne4 12.ba6=; A4) 8...a6 9.0–0 c6 10.d3 dc4 11.dc4 Nbd7 12.bc6=; B) 8.cd5 Nd5 9.Nc3 (9.Bc4 a6 10.0–0 c6 11.d4 Bd6 12.e4=; 9.Qc2 c5 10.Qe4 Qd7 11.a5 Nb4 12.Qc4+=; 9.Be2 a6 10.0–0 c5 11.d4 ab5 12.ab5=) 9...a6 10.Bc4 Nc3 11.Bc3 c6 12.bc6=.

7.Qc2 Nbd7 8.Be2 Rc8 (8...dc4 9.Bc4 a6 10.ba6 Ba6 11.Ba6 Ra6 12.0–0=) 9.0–0 (9.cd5 Bd5 10.Nc3 Bb7=) 9...c5 (9...dc4 10.Qc4 c6 11.d4=) 10.d3 dc4 11.dc4 0–0 12.Nbd2 Qc7 13.a4 Rfd8 14.a5 h6 15.h3 e5 16.ab6 ab6 17.Bd3 g6 18.Qc3 Ne8 19.Rfd1 f5 20.Qc2 (20.e4 Bf6 21.Qc2+= (21.ef5? e4 22.Qb3 ef3–+)) 20...e4+= 21.Ne4 fe4 22.Be4 Nef6?? (better is 22...Be4 23.Qe4 Nf8+=) 23.Bb7+– Qb7 (23...Nf8 24.Bc8 Qc8 25.Rd8 Qd8+–) 24.Qg6 Kf8 25.Qh6 Kg8 (25...Kf7 26.Ng5 Kg8 27.Qg6 Kh8 28.Nf7) 26.Qg6 Kf8 27.Ng5 1–0. Nemeth,Laszlo1 (1985) – Varga,Mihaly (1995), Gyongyos Matra Cup, 2004.

7.d3 dc4 8.dc4 Qd1 9.Kd1 0–0 10.Be2 c5 11.Nbd2 Nbd7 12.Kc2 Rfd8 13.Rad1 a6 14.a4 ab5 (14...Ng4!? 15.Rdf1 Bd6–/+) 15.ab5+= Ne4 (15...Ng4!? 16.Rhf1 Bd6+=) 16.Ne4= Be4 17.Kb3 Bf6 18.Bf6 Nf6 19.Rd8 Rd8 20.Rd1 (20.h3!?=) 20...Rd1–/+ 21.Bd1 Ng4 22.Nd2 Nf2 23.Bf3 Bf3 24.gf3 f5 25.Kc3 g5 26.Nb1 (better is 26.Nb3!? g4 27.fg4 Ng4 28.h3–/+) 26...g4–+ 27.Nd2 h5 28.fg4 Ng4 (28...hg4 29.Nb3–+) 29.Nf3 Ne3 30.Kd3 (30.Ne5 f4 31.Kd3–/+) 30...Ng4 31.Ng5 e5 32.h3 Nf6 33.Ke3 Kf8 34.Nf3 f4 35.Kd3 e4 (35...e4 36.Ke2 ef3 37.Kf3 Ne8 38.Kf4 Nd6–+) 0–1. Hal1958 – Spotsychess, playchess.de, 2005.

7.d4 0–0 8.Nc3 a6 9.Be2 Bb4 10.0–0 Ne4 (10...dc4 11.Bc4 ab5 12.Nb5+=) 11.Qd3 (11.Ne4 de4 12.Ne5 ab5 13.cb5 Nd7=) 11...f6 (11...dc4 12.Qc4 Bc3 13.Bc3 ab5 14.Qb3+=) 12.a3 (12.cd5 Bc3 13.Bc3 Bd5+=) 12...Bd6 (12...Bc3 13.Bc3 dc4 14.Qc4=) 13.Nd2 f5 14.f3 Bh2? (better is 14...Nc3 15.Qc3 ab5 16.cb5 c6=) 15.Kh2+– Qh4 16.Kg1 Ng3 (better is 16...dc4 17.Nc4 Nc3 18.Qc3 ab5+–) 17.Kf2?? (better is 17.Rfc1+–) 17...Nf1 (17...Ne4 18.Kg1 Ng3+–) 18.Kf1+= Qh1 19.Kf2 Qh4 20.Kg1 (20.Kg1 ab5 21.cb5+/–) 1–0. Stummerer,Alfred – Scott, corr SOK–88–21, 1988.

7.d4 0–0 8.Nbd2 dc4 9.Nc4 Nbd7 10.Be2 a5 11.0–0 c5 12.bc6 Bc6 13.a4 Rb8 14.Nce5 Ne5 15.Ne5 Ba8 16.Bb5 Bd6 17.Nc6 Bc6=+ 18.Bc6 Rc8 19.Rc1+= Nd5 20.e4 Nb4 21.Bb5 Rc1 22.Qc1 Qc8 23.Qd2 Qc2 24.Qc2 Nc2 25.Rc1 Nb4 26.Kf1 Nd3?? 27.Bd3+– 1–0. carocan (1785) – wicher66 (1640), kurnik, 2011.

7.d4 0–0 8.Be2 Nbd7 9.Nc3 c5 (9...a6 10.a4=) 10.dc5 (10.cd5 Nd5 11.0–0 Nc3 12.Bc3 a6=) 10...Nc5 11.cd5 (11.0–0 dc4 12.Bc4 Qc7=) 11...Nd5 12.Nd5 Bd5 13.0–0 Bf6 (13...Rc8 14.Qd4 Bf6 15.Ne5–/+) 14.Bf6 Qf6 15.Qd4 Qe7 (better is 15...Qh6=) 16.a3? (better is 16.Rfd1=) 16...Nb3–+ 17.Qc3 (17.Qf4 Na1 18.Ra1 Bf3 19.Bf3 Rac8–+) 17...Na1 (17...Rac8 18.Qb2 Na1 19.Ra1–+) 18.Ra1 Rac8 19.Qd4 (19.Qb2 Qc5–+) 19…Rc2 (19...Rc2 20.Bd3 Rc7–+; 19...Rfd8 20.e4 Ba8 21.Qa4–+) 0–1. Guenther – Kucharkowski,Jens, Freital, 1982.

7.d4 a6 8.Nc3 0–0 9.a4 ab5 10.ab5 Ra1 11.Ba1 c5 12.bc6 Nc6 13.Be2 dc4 14.Bc4 Qa8 15.0–0 1–0. Schaar,Joerg (2100) – Kupec,Jan (1995), CiF–11er/0033, 2011.

7.d4 dc4 8.Bc4 Nbd7 9.Nbd2 0–0 10.Qb3 (10.Qe2 c5+=) 10...a5 (10...a6 11.ba6 Ba6 12.a4=) 11.a3 (11.0–0 a4 12.Qd3 a3=) 11...Rc8 (11...Ne4 12.Ne4 Be4 13.0–0=) 12.Rc1 Ne4 13.0–0 Ndf6 14.Rfd1 Bd6 (14...Nd2 15.Nd2 Bd6 16.Re1=) 15.Nf1 (15.Ne4 Ne4 16.d5 ed5 17.Bd5 Bd5 18.Rd5 Qe7+=) 15...Qe7 (15...a4!? 16.Qd3 Ng4+=) 16.Ne5+= Nd5 (16...Nh5 17.Nd2+=) 17.f3+/– Nef6 (17...Ng5 18.e4 Nf4 19.Ng3+=) 18.g3 Qe8? (better is 18...a4!? 19.Qd3 Nh5+/–) 19.e4+– Ne7 20.Ne3 (20.Nd3 Ng6 21.e5 Bf3+–) 20...Be5? (better is 20...h5+–) 21.de5 Nd7 22.Be6! Nc5 (22...fe6 23.Qe6 Double attack) 23.Rc5 fe6 24.Qe6 Qf7 25.Qf7 Rf7 26.Rc2 (better is 26.e6 Rf3 27.Nf5 Nf5 28.Rf5 Be4 29.Rf3 Bf3 30.Rd7+–) 26...Rf3+/– 27.Nd5 Ng6 (27...Nd5 28.ed5 (worse is 28.Rd5 Bd5 29.ed5 Rd8+=) 28...h5 29.e6+/–) 28.Rf1 (28.a4!? Bd5 29.ed5 Rff8+–) 28...Rf1 29.Kf1 Kf7 30.Rc6?? (better is 30.Ke2 Bd5 31.ed5+–) 30...Bc6–+ 31.bc6 Nf8 32.Ke2 Ne6 33.Nf4 b5 34.Bc3 Ra8 35.Nd5 Ra6 36.Ke3 Rc6 37.Ba5 Rc1 38.h3? Ra1 39.Bc7 Ra3 40.Kf2 Nc7 41.Nc7 Rb3 42.Kg2 b4 43.h4 Rb1 44.Nb5 Ke6 45.Kf3 Ke5 46.h5 Rc1 47.Ke3 b3 48.Kd2 b2 49.Na3 b1Q 50.Nb1 Rb1 51.Kd3 Rb3 52.Kc4 Rg3 53.Kc5 Ke4 54.Kd6 Rg5 55.h6 gh6 56.Ke6 Rg6 57.Kf7 Ke5 58.Ke7 Rg7 59.Kf8 Kf6 60.Ke8 Ra7 61.Kd8 Ke6 62.Kc8 Kd6 63.Kb8 Rg7 0–1. Lunin,Mikhail – Kuznetsov,Yuriy, Zhukovskiy_0211b, 2011.

7.d4 Nbd7 8.Qc2 Ne4 9.Bd3 f5 10.0–0 0–0 11.Nbd2 g6 12.Nb3 h6 13.Nfd2 Bf6 14.Be4 fe4 15.c5 Bc8 16.c6 Nb8 17.f4 a5 18.a4 Kg7 19.Ba3 Be7 20.Be7 Qe7 21.Qb2 Qb4 22.Qa3 Qa3 23.Ra3 h5 24.Rc1 Rf5 25.Nf1 Rf8 26.Nbd2 Rf5 27.h3 Rf8 28.g4 hg4 29.hg4 Kf6 30.Kg2 Rh8 31.Ng3 Kg7 32.Raa1 Kf7 33.Rh1 Rh1 34.Rh1 Kg7 35.Nb1 Nc6 36.bc6 Ba6 37.Nc3 Bc4 38.Nb5 Bb5 39.ab5 a4 40.Ra1 Kf6 41.Ne2 a3 42.Ra2 Ke7 43.Nc3 Ra5 44.Kg3 Kd6 45.Kh4 Ke7 46.Kg5 Kf7 47.f5 gf5 48.gf5 Ke7 49.fe6 Ke6 50.Kg6 Ra8 51.Nb1 Rg8 52.Kh5 Rg3? 53.Ra3 Kf6 54.Nd2 Kf5 55.Kh4 Rg2 56.Nb3 Rb2 57.Kg3 Ke6 58.Kf4 Kd6 59.Ra8?? Rb3 60.Rd8 Ke6= 61.Rd7 Rb5 62.Rc7 Rb1 63.Rc8 Kd6 64.Kf5?? Rf1–+ 65.Kg6 b5 66.c7=+ Kd7 67.Rb8 Rb1?? 68.c8Q (68.c8Q Kd6 69.Qd8 Ke6 70.Rb6) 1–0. carocan (1765) – zakapior51 (1725), kurnik, 2011.

7.cd5 ed5 8.Be2 0–0 9.Nc3 c6 10.bc6 Nc6 11.0–0 Na5 12.d4 Nc4 13.Bc4 dc4 14.Re1 a6 15.e4= b5 16.d5 Bb4 17.a3 Bc3 18.Bc3+/– Re8 19.Nd2 Qd7 20.f3 Re7 21.Bf6 gf6 22.Qc2 Rae8 23.Qc3 Bd5 24.Qf6 Re6 25.Qg5 Kh8 26.Kf2 Rg6 27.Qd5 Qd5?? 28.ed5+– Rd8 29.Re5 Rgd6 30.Ne4 Rd5 31.Rd5 Rd5 32.Ke3 Rd3 33.Ke2 Kg7 34.h4 h6 35.h5 f6 36.g4 Kf7 37.Nd2 Ke6 38.a4 Ke5 39.ab5 ab5 40.Ra5 Rd5 41.Ne4 b4 42.Rd5 Kd5 43.Kd2 b3? (43...b3 44.Nf6 Ke5+–; 43...Ke5+–). var – book2, Live Game Caissa's Web, 2004.

7.cd5 ed5 8.Be2 a6 =.

7.cd5 Qd5 8.Nc3 Qd6 9.e4 Nbd7 10.Qc2 =.

7.cd5 Qd5 8.Nc3 Qf5 9.Be2 c5 10.0–0 0–0 11.d3 (11.d4 Rc8=) 11...Nbd7 (11...a6 12.e4 Qf4 13.Qc1 Qc1 14.Rfc1 ab5 15.Nb5=) 12.e4 Qf4 13.g3 (13.Qc1 Qd6=) 13...Qc7 (13...Qd6 14.a4=+) 14.Nd2 Rad8 (14...a6 15.Qc2=+) 15.f4 e5 (15...a6 16.Nc4=) 16.Nc4 Bd6 (16...ef4 17.Rf4 a6 18.a4=) 17.Qd2 (17.Qa4 Ra8=) 17...Rfe8 18.Rf2 (18.a4 a5=) 18...Nf8 (18...a6 19.Rc1=) 19.f5 (19.Nd6 Qd6 (< 19...Rd6 20.fe5 Re5 21.Nd5 Red5 22.Bf6+/–) 20.fe5 Re5= (20...Qe5? 21.Nd5 Ne4 22.de4 Qe4 23.Qg5+–)) 19...N6d7 (19...Be7 20.Qe3=+) 20.Bd1 Be7 21.Bb3 h6 22.Qe2 Nh7 23.h4 Ra8 24.Rd1 Rf8 25.Qf3 Rad8 26.Rh2 Kh8 27.g4 Ndf6 28.Ne2 Rd4?? 29.Nd4+– cd4 30.Qg3 Nd7 31.g5 Qd8 32.Bc1 h5 33.Rg2 Qb8 34.f6 Bd8 35.fg7 Kg7 36.g6 Nhf6 37.Qg5 Ng4+– 38.Qh5 Ndf6 39.Bh6! Nh6 40.gf7 (Demolishes the pawn shield) 40...Nhg4 41.Rg4 Ng4 42.Qg4 Kh6 43.Qe6 Kh5 44.Ne5 Bc8 45.Qg6 Kh4 46.Qh6 (46...Kg3 47.Qh2#) 1–0. Teichmann,Erik (2325) – Rujevic,Mirko (2300), AUS Masters Melbourne, 2002.

7.cd5 Nd5. Dopper.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 0–0 11.0–0 dc4 12.Bc4 c6 13.Qb3 c5 14.Ng5 h6 15.Nh3 Bd5 16.d4 Bc4 17.Qc4 Qd5 18.Qc2 (18.Qe2 Rd8=) 18...g5 (better is 18...cd4!? 19.Bd4 Qb5–/+) 19.Nc3+= Qc4 20.Qa4 Qa4 21.Na4 Nbd7 22.dc5 Bc5 23.Bd4?? (better is 23.Nc5 bc5 24.f4+=) 23...Bd4–/+ 24.ed4 Nd5 25.Rc1? (better is 25.f4 Ra8 26.Nb2–/+) 25...Ra8 26.Rc4 Ra5 (better is 26...g4–+) 27.g3 Rb5 28.Nc3 Nc3 29.Rc3 Rd5 30.Rc4 Kg7 31.f4 b5 32.Rb4 Nb6 (32...Nb8!? 33.Rb2–+) 33.fg5 hg5 34.Kf2 Nc4 35.Kf3? (35.Ng1 Na5 36.Ne2 Nc6–+) 35...Kg6 (35...Rd4 36.Kf2 Rd5 37.Ng1–+) 36.Nf2 (36.Ng1 f5–+) 36...Rf5 (better is 36...Na5!? 37.Rb2–+) 37.Ke2 Rd5 38.Nd3?? (38.Kf3 Na5 39.Nd3–+) 38...f5 39.Nc5 (39.h3 Kf6–+) 39...Rd4 40.Rb5 Rd2 (better is 40...Rd5–+) 41.Kf3?? Rh2 42.Ne6 Nd2 43.Ke3–+ Nc4 44.Kd4?? Nd6–+ 45.Kd5?? Ne4 46.Kc6 Kf6 47.Nd4 Rh3 0–1. Toll,Anatoly – Hayes,Michael, Dos Hermanas Internet qual–E, 2009.

7.Be2 dc4 8.Bc4 a6 9.0–0 =+.

7.Be2 c5 8.0–0 dc4 9.Bc4 0–0 10.d3 Qc7 11.Nbd2 a6 12.a4 ab5 13.ab5 Nbd7 14.Qb3 Bd6 15.Qc3 Bd5 16.e4 Bc4 17.Nc4 e5 (17...Bf4 18.g3 Bh6 19.Nfe5+=) 18.Nh4 g6 (18...Ra1!? 19.Ra1 Re8+=) 19.f4 Ra1 20.Ba1 (20.Ra1 Be7 21.fe5 Ne4 22.de4 Bh4+–) 20...Re8 (20...Be7!? 21.fe5 Ng4+–) 21.fe5 (21.Nd6?! Qd6 22.Nf3 Qe6 23.Ne5 Ne5 24.Qe5 Qe5 25.Be5 Nd7+/–) 21...Be5 22.Ne5 (22.Ne5 Ne5 23.Rf6+–) 1–0. Whaley,Michael G – Putt,Garry D, NZCCA HT corr New Zealand, 2002.

7.Bf6 Bf6 8.d4 c5 =.

7.a4 a5

8.cd5 Bd5 9.Nc3 Bb7 10.d4 0–0 11.Bd3 c6 12.0–0 =.

8.Be2 0–0 9.0–0 dc4 10.Bc4 Nbd7 11.Nd4 Nc5 12.d3 =.

8.Be2 0–0 9.0–0 c5 10.d4 (10.d3 Nbd7 11.Nbd2 Bd6 12.Rc1=) 10...Nbd7 11.Nbd2 Qc7 (11...cd4 12.Bd4=) 12.Ba3 (12.Rc1=) 12...Bd6 13.dc5 Nc5 14.g3 Rfd8 15.cd5 Bd5 16.Rc1 Qb7 17.Bb2 Nfe4 18.Bd4 Rac8 19.Nc4 f6 20.Nfd2 e5 21.Bc3 Nc3 22.Rc3 Kf8 23.f3 Be6 24.Qc2 g6 25.Rc1 Bf5 26.e4 Be6 27.Nd6 Rd6 28.Bc4 Rcd8 29.Bd5 (29.Nb3 Na4 30.Na5 ba5 31.Qa4 Qa7 32.Kh1 Bc4 33.Rc4–+) 29...Bd5–/+ 30.ed5 Qd5 31.Nc4 Qd4 32.Kf1= Re6 33.Nb6 Rb6 34.Rc5 Qd3 35.Qd3+/– Rd3 36.Rc7 Rf3 37.Ke2 e4 38.Rh7+– Kg8 39.Rd7 Rb8 40.Rb1 Ra3+/– 41.Rb2?? Ra4–/+ 42.b6 Rb4 43.Ra2 ½–½. Buss,Michael – Prellwitz,Steve, USCF84CC451, 1984.

8.Be2 dc4 9.0–0 (9.Bc4 0–0 10.0–0 c5 11.d4 Nbd7 12.Qe2=) 9...Bd5 10.Nc3 c6 11.bc6 Nc6 12.Nd5 =.

8.Be2 c5 9.0–0 0–0 10.d3 h6 11.h3 Nfd7 12.Nbd2 Bf6 13.Bf6 Nf6 14.Nb3 Qc7 15.Nfd2 e5 16.cd5 Nd5 17.Nc4 Nd7 18.e4 Nc3 19.Qc2 Ne2 20.Qe2 Rad8 21.Rad1 Rfe8 22.Nbd2 Nf8 23.Nf3 f6 24.Qa2 Kh8 25.Ne3 Ng6 26.g3 Re7 27.Rd2 Qd7 28.Nf5 Ree8 29.Rfd1 Ne7 30.Ne7 Qe7 31.Nh4 Kh7 32.Nf5 Qf8 33.Kh2 Bc8 34.Ne3 Be6 35.Qc2 Qf7 36.Kg2? (better is 36.Nc4!? Qc7 37.Rc1–/+) 36...Bb3–+ 37.Qb1 Bd1 38.Qd1 Rd4 39.Nc4 Qe6 40.Qg4 Qg4 41.hg4 Red8 42.Nb6 Rd3 43.Rc2 Rb8 44.Nc4 Rd4 45.f3 g6 46.Kf2 Kg7 47.Ke2 Kf7 48.Ke3 Rbd8 49.Na5 (better is 49.Rc3!?–/+) 49...Ra4–+ 50.Nb7 Ra3 51.Ke2 Rb8 (51...Rdd3!? 52.b6 Re3 53.Kd2 Rad3 54.Kc1–+) 52.Nd6 Ke6 53.Nc4 Rb3 54.b6 R3b6?? (better is 54...Rd8–+) 55.Nb6= Rb6 56.Rc5 ½–½. Hal1958 – Spotsychess, playchess.de, 2004.

8.Be2 c6 9.0–0 (9.bc6 Nc6 10.0–0 dc4 11.Na3 c3 12.dc3=; 9.cd5 Nd5 10.0–0 0–0 11.Nc3 Nc3 12.Bc3=; 9.d4 0–0 10.0–0 dc4 11.Bc4 cb5 12.Bb5=) 9...0–0 10.Nc3 dc4 11.Bc4 Nbd7 12.Rc1 =.

7.Nc3 0–0

8.a4 a5 9.Be2 (9.cd5 Nd5 10.Bc4 Nd7 11.0–0 Nc5 12.Nd5 ed5 13.Be2; 9.d4 c5 10.cd5 Nd5 11.dc5 Bc5 12.Bc4 Nb4 13.Qe2) 9...Nbd7 (9...c5 10.bc6 Nc6 11.0–0 Rc8 12.cd5 Nd5 13.Rc1) 10.0–0 (10.Qc2 dc4 11.Bc4 Bb4 12.0–0 h6 13.Be2) 10...Nc5 (10...dc4 11.Bc4 Bf3 12.gf3 Ne5 13.Be2) 11.d4 (11.Qc2 Nfe4 12.cd5 Nc3 13.Bc3) 11...Nce4 12.Ne4 de4 (12...Ne4 13.Qc2= (13.Ne5=)) 13.Nd2 (13.Ne5 Nd7+=) 13...Rc8 14.Nb3 (14.Bc3 c6=) 14...c6 (14...Bb4!?=) 15.Qc2+= c5? (15...cb5 16.ab5 Nd7 17.Rfc1+=) 16.Rfd1 (better is 16.dc5 Rc5 17.Nc5 Bc5 18.Rfd1+–) 16...cd4+= 17.Bd4 Qe8?? (better is 17...Qc7+=) 18.Qb2 (better is 18.Bb6!? Bd5+–) 18...Bd8 19.Rac1 Qe7 20.Rc2 Re8+/– 21.Qa1 e5+= 22.Bb2 Qe6 23.h3 h5 24.Rcd2 Bc7 25.Ba3 h4 26.Qb2+/– Rcd8 27.c5 Rd2 28.Rd2 Bd5 29.Bd1 Rd8 30.cb6 Bb6 31.Nc5 Qf5 32.Nb3 Rc8?? 33.Rc2 Bc4 34.Qc3 Nd5 35.Qb2?? Ne3!–+ 36.Rc1 Nd1 37.Rd1 e3 38.fe3 Be3 39.Kh1 Bb3 40.Qb3–+ Bd4?? 41.b6= Rb8 42.b7 Qd7 43.Rb1 e4 44.Qb5 Qe6 45.Qa5 Kh7?? 46.Qb4 Qd7? 47.a5 e3 48.a6 e2 49.Qd6 Qe8 50.Bb4 Rd8?? 51.Qe7 Qe7?? 52.Be7 +–. Hakim,Viktor – Niegemeier,Karl Leo, Bois Gentil op, 1994.

8.a4 a6 9.cd5 (9.h3 Nbd7 10.cd5 ed5 11.ba6 Ba6 12.Ba6 Ra6 13.0–0; 9.Be2 c5 10.cd5 ed5 11.Bd3 c4 12.Bc2 Nbd7 13.0–0) 9...ed5 10.d4 c5 11.bc6 Nc6 12.Bd3 Nb4 13.0–0.

8.a4 c5 9.Bd3 Nbd7 10.Qe2 dc4 11.Bc4 Ng4 12.Rd1 Qc7 13.h3.

8.a4 c5+= 9.d4 cd4 (9...a6 10.Rc1+=) 10.ed4 (10.Qd4 Bc5 11.Qd3 dc4 12.Qc4 a6=) 10...Bb4 (10...Nbd7 11.Ba3+=) 11.Ne5 (11.Qb3 Bd6+=) 11...Ne4 (11...dc4 12.Nc4 a6 13.Rc1–/+) 12.Qb3 Qg5 (better is 12...Qh4!? 13.g3 Ng3–+) 13.Nf3= Qe7 14.Bd3 (14.Ba3 A) 14...Nc3?? 15.Bb4 (15.Qb4?! Qb4 16.Bb4 dc4+–) 15...dc4 16.Qc3+– (16.Be7 cb3 17.Ra3 b2–+); B) 14...Ba3 15.Qa3 Qf6=) 14...Nc3 (14...dc4 15.Bc4 Nc3 16.Bc3 Bc3 17.Qc3 Bf3 18.gf3–/+) 15.Bc3 Bc3 16.Qc3 Rc8 (16...dc4 17.Bc4 Bf3 18.gf3–/+) 17.0–0 dc4 18.Be2 Nd7 (18...a6 19.Rfb1–/+) 19.Nd2 Qg5 20.f3 Nf6 21.Nc4 Nd5 22.Qc1? (better is 22.Qe1–/+) 22...Nf4–+ Threatening mate... how? 23.Rf2 Nh3 (better is 23...Bd5!? 24.a5 Ne2 25.Re2 Qc1 (25...Bc4? 26.Qg5 Be2 27.Kf2+–) 26.Rc1 Rc4 (26...Bc4?! 27.Rec2+=) 27.Rc4 Bc4–+) 24.Kf1 Qc1 25.Rc1 Nf2 26.Kf2 Bd5 27.Rc2 Bc4 28.Bc4 Rc7 29.Ke3 Rac8 30.Kd3 g5 31.h3 Kg7 32.g3 Rd8 33.Re2 Re7 34.f4 gf4–+ 35.gf4 Red7 36.Re4 Rd6 37.f5 ef5 38.Rf4 Kg6 39.h4 Re8 40.Bb3 h5 41.Bc4 Re1 42.Kd2? Re4 43.Re4 fe4 44.Ke3 f5 45.d5 Rd8 46.Kf4 Rc8 47.Ba2 Kf6 48.Bb3 Rc3 49.Bd1 Rd3 50.Bh5 Rd5 51.Be2 Rd2 52.Ke3 Ra2 53.Bd1 Ke5 54.h5 Rh2 (54...Rh2 55.Be2 f4 56.Kd2 f3–+; 54...f4#) 0–1. Zylla – Hielscher, BS–Kreismeisaterschaft, 1995.

8.a4 c5 9.cd5 ed5 10.d4 Nbd7 11.Be2 Qc7 12.dc5 Nc5 13.0–0.

8.a4 Bd6 9.Be2 (9.d4 Nbd7 10.Bd3 dc4 11.Bc4 a6 12.0–0 ab5 13.ab5; 9.cd5 ed5 10.d4 c5 11.dc5 bc5 12.Be2 Qa5 13.0–0) 9...c5 10.cd5 ed5 11.0–0 Nbd7 12.Qc2 Qc7 13.h3.

8.a4 Nbd7 9.Qc2 (9.cd5 Nd5 10.Bc4 c5 11.bc6 Bc6 12.0–0 Rc8 13.Nd5; 9.Be2 dc4 10.Bc4 Bf3 11.gf3 Ne5 12.Qe2 Bb4 13.Rg1) 9...Nc5 10.Be2 Bd6 11.d4 Nce4 12.0–0 Nc3 13.Bc3.

8.Qc2 dc4 9.Bc4 a6 +=.

8.d4 dc4 9.Bc4 a6 10.0–0 ab5 11.Bb5 Na6 12.Qe2 Nb4 13.e4 c5 (13...h6!?=) 14.Rfd1+= Qc7 15.a3 Nc6 16.d5 Ne5 17.Ne5 Qe5 18.Bc4 Bd6? (better is 18...Bd8!?+/–) 19.g3+– ed5? (19...Rfd8 20.de6 fe6+–) 20.Nd5 Qg5 (20...Bd5 21.Be5 (21.ed5?! Qe2 22.Be2 Rfc8+=) 21...Bc4 22.Qc4 Be5 23.Rab1+–) 21.f4 (better is 21.Nf6 gf6 22.Rd6 Rae8 23.Bf6 Qg6+–) 21...Qg6 (21...Bf4 22.Bf6 Be3 23.Qe3 Qe3 24.Ne3 gf6+–) 22.f5 Qg5 (22...Qh6 23.Nf6 gf6 24.Rd6 b5 25.Bf6 Rfd8 26.Qg4 Kf8 27.Be7 Ke7 28.Rh6 Rd3 29.Qg5 Kd7 30.Bb5 Kc8 31.Bd3 Bd5 32.ed5 Ra7 33.Qg8 Kd7 34.Rb1 Rc7 35.Qf7 Kd8 36.Rb8 Rc8 37.Rd6) 23.Nf6 gf6 24.Rd6 (24.Rd6 Rae8 25.Bf6 Qf5 26.ef5 Re2 27.Be2+–) 1–0. pierred (2850) – cristero (2460), net–chess.com, 2015.

8.Be2 a6 9.a4 a5 (9...c5 10.cd5 Nd5 11.0–0=) 10.0–0 Re8 11.cd5 ed5 12.Qc2 c5 13.bc6 Nc6 14.Bb5 Nb4 15.Qb3 Rf8 16.d4 Rc8 17.Ne5 Bd6 18.Rfd1 Be5 19.de5 Ng4 20.Be2 Qh4 21.Bg4 Qg4 22.Rd4 Qg6 23.Ba3 (better is 23.Rc1=) 23...Qc2?? (23...Nc2 24.Rad1 Rfe8–/+) 24.Qc2?? (better is 24.Rb4 Qc3 25.Qc3 Rc3 26.Rb6+–) 24...Nc2–+ 25.Bf8 (25.Bb2 Na1 26.Ba1 Rc5–+) 25...Kf8 (25...Na1 26.Rd1 Kf8–+ (26...Rf8?! 27.Ra1 Rc8 28.Nb5=; 26...Rc3 27.Bg7 Kg7 28.Ra1–+)) 26.Rc1–/+ Nd4 27.ed4 Ba6 28.Na2 Rc1 29.Nc1 Bc4 30.f4 b5 31.ab5 Bb5 32.Na2 Ke7 33.Nc3= Bc4 34.Kf2 f6 35.Ke3 fe5 36.de5 Ke6 37.g4 g5+= 38.Na4 gf4 39.Kf4 Ke7 40.Ke3 Bb5 41.Nc5 a4–/+ 42.Kd4 Bc6 43.g5 Kf7 44.h4 Kg6 45.e6 Kf5 46.e7 a3 47.Kc3 Ke5 48.Nb7 Ke6?? 49.Nd8+– Ke7 50.Nc6 Ke6 51.Kb3 Kf5= 52.Nd4 Kg4 53.Nf3 d4 54.Ka3 Kf3 55.h5 d3 56.g6 hg6 57.hg6 d2 58.g7 d1Q 59.g8Q ½–½. Alessandro,Sergio (1675) – Di Tomaso,Fausto, Udine DLF op, 2007. (=1.Nf3 Nf6 2.b4 b6 3.Bb2 e6 4.b5 d5 5.e3 Be7 6.c4 Bb7 7.Nc3 0–0)

7.Nc3 dc4

8.Bc4 0–0 9.0–0 Nbd7 10.Rb1 a6 11.a4 (11.d3 ab5 12.Nb5 Re8 13.Nbd4 c5 14.Nb5 Nd5 15.e4 N5f6 16.a4 Qb8=; 11.Nd4 e5 12.Nf5 ab5 13.Nb5 c6 14.Nbd6 Bd6 15.Nd6 Ba6 16.Ba6 Ra6=; 11.d4 ab5 12.Bb5 Bd6 13.Qe2 c6 14.Bd3 Qb8 15.Rfd1 c5 16.h3 Bf3=; 11.ba6 Ba6 12.Ba6 Ra6 13.Qe2 Qa8 14.d3 c6 15.Rfc1 b5 16.Nd4 b4–/+) 11...ab5 12.ab5 Bf3 13.Qf3 Ne5 14.Qe2 Qd6 15.d3 Rfc8 16.Ra1 c6 =.

8.Bc4 0–0 9.0–0 Nbd7 10.Rc1 a6 11.Nd4 (11.ba6 Ba6 12.Ba6 Ra6 13.Qe2 Ra5 14.e4 c6 15.Nd4 Qa8 16.Nb3 Ra6=; 11.a4 ab5 12.ab5 Bf3 13.Qf3 Ne5 14.Qe2 Nc4 15.Qc4 Qd2 16.Ba1 Qd8+=; 11.d3 ab5 12.Nb5 c6 13.Nbd4 c5 14.Nb5 Bc6 15.a4 Ra5 16.e4 Qa8=; 11.d4 ab5 12.Nb5 Re8 13.Qe2 c6 14.Nc3 b5 15.Bb3 b4 16.Nb1 Ba6+=) 11...Ne5 12.ba6 Bg2 13.Ne6 fe6 14.Be6 Kh8 15.Kg2 Nd3 16.Rb1 Ra6 =.

8.Bc4 0–0 9.0–0 Nbd7 10.d3 a6 11.a4 (11.Nd4 ab5 12.Bb5 Nb8 13.Qc2 c5 14.Nb3 Nc6 15.Rfb1 Bd6 16.a3 Qc7=; 11.ba6 Ba6 12.Ba6 Ra6 13.Qc2 c6 14.Rfd1 Qa8 15.a4 Rd8 16.Ba3 Ba3=; 11.Qe2 ab5 12.Nb5 c6 13.Nbd4 Bd6 14.e4 c5 15.Nb5 Bf4 16.g3 Bb8=; 11.Rc1 ab5 12.Nb5 c6 13.Nbd4 c5 14.Nb5 Bc6 15.Qb3 Bf3 16.gf3 Qb8=) 11...ab5 12.ab5 Ra1 13.Ba1 Bd6 14.Qe2 Bf3 15.Qf3 Ne5 16.Qh3 Qe7 =.

8.Bc4 0–0 9.0–0 Nbd7 10.d4 a6 11.a4 (11.Qe2 ab5 12.Bb5 Bb4 13.Rfc1 Qe7 14.Bd3 Rfc8 15.Nb5 c6 16.a3 Ba5=; 11.ba6 Ba6 12.Ba6 Ra6 13.Qe2 Qa8 14.Rfc1 c6 15.e4 Rd8 16.d5 cd5=; 11.Re1 ab5 12.Bb5 Bd6 13.e4 c6 14.Be2 Nh5 15.e5 Bb4 16.Qd2 g6+=; 11.Rc1 ab5 12.Nb5 Re8 13.Qe2 c6 14.Nc3 b5 15.Bb3 b4 16.Nb1 Ba6+=) 11...c6 (11...c5 12.bc6 Bc6 13.Rc1 Bd6 14.d5 ed5 15.Nd5 Nd5 16.Bd5 Bd5=) 12.Qc2 (12.Qe2 ab5 13.ab5 Qc7 14.e4 Bb4 15.Bd3 c5 16.Na2 Ba3=) 12...cb5 13.ab5 a5 (13...Bf3 14.gf3 ab5 (14...Rc8 15.Qe2= ab5 16.Bb5 Bb4=) 15.Bb5 Qc7 16.Bd3 Bd6=) 14.Be2 (14.e4 Qc7 15.Bd3 Rfc8 16.e5 Nd5+=) 14...Rc8 15.Qd3 (15.Rfc1 Nd5 16.Qa4 Nc3=) 15...Bd6 (15...Bf3 16.Bf3 Ne5=) 16.Rfd1 (16.Rfc1 Bb4=) 16...Re8 (16...Qe7=) 17.h3 Bb4 18.Rac1 Qe7 19.Nd2 e5 20.de5 Ne5 21.Qb1 Red8 22.Nb3 Nc4 23.Rd8 Qd8 24.Nd4 Nb2 25.Qb2 Qd6 26.Bf3?? (26.Na4 Rc1 27.Qc1 Nd7=) 26...Bf3?? (26...Ba3 27.Ne4 A) 27...Bb2?! A1) 28.Nd6?? Rc1 (28...Bc1?! 29.Bb7 Rc3 30.Ne2–+) 29.Kh2 Bd4 30.ed4 Bf3 31.gf3 a4–+; A2) 28.Rc8 Bc8 29.Nd6 Bd4 30.ed4+=; B) worse is 27...Ne4 28.Rc8 Bc8 29.Qc2–+; C) 27...Rc1 28.Qc1 Ne4–+ (28...Bc1?! 29.Nd6 Bf3 30.gf3+=; 28...Be4 29.Qc8 Qf8 30.Qc7–+)) 27.Nf3? (better is 27.gf3 Qc5 28.Nce2 Qg5 29.Kh2+=) 27...Ba3–+ 0–1. blackdogs (2450) – jelquez (2340), net–chess.com, 2014.

8.Bc4 0–0 9.0–0 Nbd7 10.Nd4 Ne5 11.d3 (11.Be2 c5 12.bc6 Nc6 13.Ba6 Ba6 14.Nc6 Qd6 15.Ne7 Qe7 16.Re1 Bd3+=; 11.Qe2 Nc4 12.Qc4 a6 13.a4 Qd7 14.d3 Rfd8 15.Rfd1 Bc5 16.Nb3 Bd6+=; 11.Qb3 Nc4 12.Qc4 a6 13.a4 Qd7 14.d3 Rfd8 15.Rfd1 Bc5 16.Nb3 Bd6+=; 11.Be6 Nd3 12.Qb1 Nb2 13.Qb2 fe6 14.Ne6 Qd3 15.Nf8 Rf8 16.Qb3 Rf7+=) 11...Nc4 12.dc4 Qc8 13.Qe2 Rd8 14.Rfd1 c5 15.Nf3 Qc7 16.a3 Ne4 =.

7.cd5 Bd5

8.Nc3 0–0 9.d4 Bb7 10.Bc4 c6 11.0–0 c5 12.dc5 Bc5 13.Qc2 Qe7 14.Rad1 Nbd7 15.Nd4 Rfd8 16.Nc6 Bc6 17.bc6 Nb8 18.Bb5 a6= 19.Rd8 Qd8 20.Bd3 Nc6 21.Ne4 Ne4 22.Be4+= Rc8 23.Bh7 Kf8 24.Rd1 Qe7 25.Bd4?? Bd4–/+ 26.Rd4 g6 27.Rf4? b5?? 28.Bg6+– f6 29.Bh5 Rc7 30.Qg6 f5 31.Qh6 Kg8?? 32.Qg6 Kf8= 33.Qh6 ½–½. gtate – kostaspetidis (1900), net–chess.com, 2001.

8.Nc3 0–0 9.Nd5 Qd5 10.Be2 (10.Bf6 Bf6 11.d4 c5=) 10...Rd8 (10...a6 11.Be5=) 11.0–0 (11.Bf6 Bf6 12.d4 c5=) 11...Ne4 12.d3 (better is 12.d4=) 12...Qc5?? (better is 12...Qb5 13.Qc2 Qc5=+) 13.Qb3 (13.Bd4 Rd4 14.ed4 (14.Nd4?! Nc3 15.Qc2 c6+–) 14...Nf2 15.dc5 (15.Kf2?! Qb5 16.Qc2 c6+–) 15...Nd1 16.Rad1+–) 13...Nd6+/– 14.a4 c6 15.Rac1 Qd5 16.Qd5 cd5 17.Ne5 Bf6 18.Ba1 Be5 19.Be5+/– Nb7 20.Rc7+– Nc5 21.Rc1 Nbd7+/– 22.Bd1?? Nd3 23.Bg3 Nc1 24.Rc1 Rac8 25.Rb1 Nc5 26.h3 Ne4 27.Bh4 Re8 28.f3 Nc3 29.Ra1 Nd1 30.Rd1 Rc4 31.Bg3 Ra4 32.e4 Rd8 33.Bc7 Rc8 34.ed5 Rc7 35.d6 Rd7 36.Rc1 g6 37.Rc7 Rc7 38.dc7 Rc4 (39.Kf2 h6–+) 0–1. Dopper,Johan – in 't Veld,Martin, 1991.

8.Nc3 Bb7

9.Bc4 0–0 10.0–0 c5 11.a4 Nbd7 12.Bd3 (12.d3!?=) 12...Bf3–/+ 13.gf3 Ne5 14.Be2 Qc7 (14...Nd3!?=+) 15.f4= Ng6 16.f3 (16.Qc2 Rad8=) 16...Rad8 17.Qe1 Nh5 18.Ne4 h6 (18...f5 19.Nf2=+) 19.Kh1 f5 20.Ng3 Bh4 21.Rg1 Qd7 22.Bc3 Qd5 23.Qc1 Ng3 24.hg3 Bf6 25.Rd1 Kh7 (25...e5 26.a5=) 26.Kg2 (26.Bf6 Rf6 27.d4 Rff8+=) 26...e5= 27.Rh1 (27.fe5!? Be5 28.a5=) 27...ef4=+ 28.Bf6 (better is 28.ef4!? Rfe8 29.Re1=+) 28...Rf6–/+ (28...gf6?! 29.ef4 Rfe8 30.Bc4 Qd2 31.Kg1–/+) 29.Rd1 (better is 29.ef4!? Re6 30.Re1–/+) 29...fg3–+ 30.Bc4?? (30.d4 f4 31.Bd3 fe3 32.Qe3 cd4–+) 30...Qb7 31.d4?? Nh4 32.Kg1 Nf3 33.Kf1 cd4 34.ed4 Nd4 35.Kg1 Rfd6 36.Rd4 Rd4 37.Qc2 Qf3 38.Rf1 Qe3 39.Kh1 Rh4 (40.Kg2 Rh2#) 0–1. Wittner – Donkoff, Hockenheim, 1994.

9.Bc4 0–0 10.0–0 c5 11.Qe2 Nbd7 12.Rac1 (12.Rad1 Qc7=) 12...Qc7 (12...Bf3 13.gf3 Ne5 14.Rfd1=+) 13.Rfd1 Bd6 14.d4 (14.h3=) 14...Rac8 (14...cd4 15.Nd4 Bh2 16.Kf1=+) 15.Na4 (15.d5 Rfe8+=) 15...Qb8 (15...Bf3 16.Qf3 Bh2 17.Kf1=+) 16.dc5= bc5 17.Nc3 (better is 17.h3!?=) 17...Bf3–/+ 18.Qf3 Ne5 19.Qe2 Nc4 20.Qc4 Bh2 21.Kf1 Be5 22.a4 Bc3 (22...a6 23.Kg1–/+) 23.Bc3 Nd5 24.Ba1 (24.Kg1 Qc7=+) 24...Qh2–/+ 25.Ke2 (25.Qg4 Qh6=+) 25...Qh5 (25...Qg2?? 26.Rg1 Qg6 27.Rg6 hg6 28.Qe4+–) 26.g4 Qg6 27.Rh1 f5 28.Rhg1 f4 29.e4? (better is 29.Qc2 Qc2 30.Rc2 f3 31.Kd1–+) 29...f3 30.Ke1 (30.Kd2 Nb6 31.Qc2 Rcd8 32.Kc3–+) 30...Rf4 (31.Kf1 Re4–+) 0–1. Moehring,Norbert (1950) – Josting,Friedel (1865), 31.Alpenpokal Oberstdorf op, 2005.

9.Be2 a6 10.a4 0–0 11.0–0 c6 12.Ne5 cb5 13.ab5 ab5 14.Ra8 Ba8 15.Bb5 Qc7 16.Na4 Nbd7 (16...Rd8 17.Qe2=) 17.Qc1 Rc8 18.Qc7 Rc7 19.Nd7 Nd7 20.Rc1 Rc1 21.Bc1 Nf6 22.Nb6 Bb7 23.f3 h5 24.d4 Nd5 25.Nd7 Nc3 26.Bc4 Bc6 27.Ne5 Bb5 28.Bd2 Bc4 29.Nc4 Nb5 30.Kf2 f6 31.Ke2 Kf7 32.g3 Nc7 33.Kd3 Bd8 34.Nd6 Ke7 35.Nb7 Kd7 (35...Na6+–) 36.Nd8 Kd8 37.Ba5 Kd7 38.Bc7 Kc7 39.e4 Kd6 40.Kc4 White prepares the advance d5 40...g6 41.d5 ed5 42.ed5 g5 (42...Ke7 43.Kc5 Kd7+–) 43.g4 1–0. forsetinn (2025) – bookkeeper (1680), gameknot.com, 2013.

9.Be2 0–0

10.0–0 a6

11.d4 ab5

12.Bb5 Nd5

13.a4 c6 14.Nd5 (14.Bd3 Nb4 15.Be2 Ba6 16.e4 Bd6 17.Rb1 Qd7 18.Ba3 Be2 19.Qe2 N8a6+=; 14.Be2 Ba6 15.e4 Be2 16.Qe2 Nf4 17.Qe3 Bg5 18.Ng5 Qg5 19.g3 Nh3=; 14.Bc4 Ba6 15.Ba6 Na6 16.Ne5 Bd6 17.Nc6 Nc3 18.Bc3 Qc7 19.d5 Bh2+=) 14...cd5 (14...ed5 15.Bd3 Ba6 16.Ba3 Re8 17.Be7 Qe7 18.Ba6 Ra6 19.Qd2 Qa7=) 15.Qd2 (15.Qd3 Ba6 16.Rfc1 Qe8 17.Ne5 f6 18.Ba6 Na6 19.Nc6 Bc5+=) 15...Ba6 16.g3 (16.Qd3 Bb5 17.ab5 Ra5 18.Ra5 ba5 19.Ra1 Bb4+=) 16...Bd6 17.Kg2 (17.Ne5 f6 18.Nf3 Rf7 19.Rfc1 Rfa7+=) 17...Bb5 (17...Nd7 18.Rfc1 Bb5 19.ab5 Qf6+=) 18.ab5 Nd7 19.Ne5 (19.Ra8 Qa8=) 19...Ne5 (19...Be5+=) 20.de5 Bc5 21.Bd4 Qe7 22.Qb2 Qb7 23.Rfc1 Ra1 24.Ra1 Qe7 25.Ra6 Rb8 26.h4 h6 27.Qa1 Qc7 (27...Qe8 28.Qf1+=) 28.Ra7 Bd4 29.ed4 (29.Rc7? Ba1 30.f4 h5–+) 29...Qc4 30.Qb2 ½–½. rayfranke (2470) – mpenga (2460), net–chess.com, 2014.

13.a4 Nd7 14.Qe2 (14.Qc2 Nc3 15.Bc3 Nf6 16.Ne5 Bd6 17.a5 Be4 18.Qb2 ba5 19.f3 c6=; 14.Nd5 Bd5 15.Bd3 f5 16.Bc3 Nf6 17.Ne5 Ne4 18.Be4 Be4 19.a5 ba5=; 14.Rc1 Bd6 15.Bd3 Nc3 16.Bc3 Nf6 17.Ne5 Ne4 18.f3 Nc3 19.Rc3 Qg5+=; 14.Bd3 Nb4 15.Bb5 Bd6 16.Qe2 Nf6 17.e4 Nh5 18.Ne5 Nf4 19.Qf3 f6=) 14...N7f6 15.Rfc1 Bd6 16.Nd5 Bd5 17.Ba3 Qe7 18.Bd6 Qd6 19.Ne5 Ne4 =.

13.Bc4 Nd7 14.Nd5 (14.Bd3 N7f6 15.Ne5 Nc3 16.Bc3 Qd5 17.f3 Ra2 18.e4 Ra1 19.Qa1 Qd6+=; 14.Qe2 N7f6 15.Rfc1 Nc3 16.Bc3 Ba3 17.Rc2 Be4 18.Bd3 Qd6 19.Ne5 Bd3=; 14.Rc1 Nc3 15.Bc3 Nf6 16.Ne5 b5 17.Qb3 Bg2 18.Kg2 bc4 19.Qc4 Ra3=; 14.Re1 N7f6 15.Ne5 Nc3 16.Bc3 Bd6 17.Rc1 Ne4 18.Bb2 Qh4 19.Qc2 Bd5+=) 14...Bd5 15.Bd3 Bd6 16.e4 Bb7 17.Qe2 Re8 18.Rfc1 f5 19.e5 Ba3 =.

13.Bd3 Nb4 14.Bc4 (14.Be2 Qd6 15.Qb3 N8c6 16.a3 Nd5 17.Rac1 Nf6 18.Nb5 Qd8 19.Qc2 Nd5=; 14.Bb5 Ra5 15.Qe2 N8c6 16.Rfc1 Na7 17.Bc4 Nc8 18.a3 Nd5 19.Nd5 Bd5+=; 14.Bb1 N8c6 15.a3 Nd5 16.Qc2 f5 17.Ba2 Qd6 18.Bc4 Na7 19.Ne5 Nc3=; 14.Be4 Be4 15.Ne4 Ra2 16.Ra2 Na2 17.Qe2 c6 18.Ra1 Qd5 19.Ned2 Nb4+=) 14...Ba6 15.Ba6 N8a6 16.e4 Bf6 17.a3 Nc6 18.Ne2 Qd7 19.Qc2 Rfd8 +=.

13.Nd5 Bd5 14.a4 (14.Bd3 f5 15.a3 Nd7 16.Qc2 Bd6 17.Rfc1 Qf6 18.Bc4 Bf3 19.gf3 c6=; 14.Qe2 Ra2 15.Ra2 Ba2 16.Ra1 Bd5 17.e4 Bc6 18.Bc4 Bd6 19.Ra7 Nd7=; 14.a3 c6 15.Bd3 f5 16.Qe2 Nd7 17.Rfc1 Bd6 18.a4 Qe7 19.Bc4 Rfc8=; 14.Qc2 Bf3 15.gf3 Bd6 16.f4 Qh4 17.Rfc1 Rd8 18.Bd3 Na6 19.a3 c5=) 14...Nd7 15.Bd3 f5 16.Ba3 c5 17.Bb5 Bd6 18.Rc1 Qe7 19.Bd7 Qd7 =.

13.Qe2 c6 14.Bc4 (14.Nd5 ed5 15.Bd3 Ba6 16.Ba6 Na6 17.Ne5 Qd6 18.Rfc1 Rfc8 19.Qg4 Rc7=; 14.Bd3 Ba6 15.Nd5 ed5 16.Ba6 Na6 17.Ne5 Qd6 18.Rfc1 Rfc8 19.Qg4 Rc7=) 14...Ba6 15.Ba6 Na6 16.Ne5 Bd6 17.Rfc1 Be5 18.de5 Nc5 19.Nd5 Qd5 =.

13.Be2 Nc3 14.Bc3 Be4 15.Nd2 Bg6 16.Bf3 Ra7 17.Nc4 Nd7 18.a4 Nf6 19.Ne5 Be4 =.

7.Be2 0–0

8.0–0 Nbd7 9.d4 Ne4 10.Nbd2 f5 11.g3 h5 12.Nb1 Qe8 13.Ba3 Ba3 14.Na3 Nc3 15.Qc2 Ne2 16.Qe2 Qe7 17.Nc2 dc4 18.Nh4 Qf7 19.Qc4 g5 20.Ng2 h4 21.Nge1 hg3 22.hg3 Nf6 23.Nb4 Bd5 24.Nd5 Nd5 25.Nf3 Qh5 26.Kg2 g4 27.Nh4 Kg7 28.Rh1 Qg5 29.a4 Qe7 30.Rac1 Rad8 31.Ra1 Qg5 32.a5 Rf7 33.a6 Qe3 34.Qd5 Qf2 35.Kf2 Rd5 36.Rab1 Rd4 37.Rhd1 Rfd7 38.Ke2 Kf6 39.Rd4 Rd4 40.Rc1 Rd7 41.Rc6 Re7 42.Ke3 Kg5 43.Ng2 ½–½. Oliveira,Leonardo – Figueiredo,Francisco M, Brazil, 1999.

8.a4 a6 9.0–0 =.

8.a4 c5 9.0–0 =.

8.Nc3 Nbd7 9.a4 (9.cd5 Nd5 10.0–0 (10.Nd5 Bd5= 11.0–0 c5 12.Rc1 Bf6 13.d4=) 10...N7f6 11.Rc1 a6 12.Nd5 Nd5 13.a4=) 9...h6 (9...dc4 10.Bc4 (10.0–0 a6 11.Bc4 Bf3 12.gf3 Ne5 13.Be2=) 10...Rc8 (10...Bf3 11.Qf3 Ne5 12.Qe2 a6 13.ba6=) 11.d3 (11.Rc1= c6 12.Ne2 Ne4 13.0–0+=) 11...Bf3 12.Qf3 Ne5 13.Qe2=) 10.a5 (10.cd5 Nd5 11.0–0 (11.Nd5 Bd5= 12.Qc2 Rc8 13.e4+=) 11...Nb4 12.d4 c5 13.bc6+=) 10...ba5 (10...dc4 11.Bc4 ba5 (11...a6 12.ba6 Ba6 13.Ba6=) 12.d3 (12.Ra5= c6 13.Ra1+=) 12...Bf3 13.Qf3=) 11.Ra5 (11.cd5 ed5 (11...Nd5 12.Nd5 Bd5 13.Qc2=) 12.0–0 Bb4 (12...Nb6= 13.Qc2+=) 13.Na2=) 11...c5 (11...dc4 12.Qa1 Bf3 13.Bf3+=) 12.Ra1 d4 (12...dc4 13.Bc4 Ng4 14.Be2=) 13.Na4 (13.ed4!? cd4 14.Nd4 Bg2 15.Rg1=) 13...e5+= 14.ed4 (14.d3 e4 15.de4 de3 16.fe3 Ne4+=) 14...cd4 15.0–0 (15.Qb3!?+=) 15...d3!–/+ 16.Ne5 (16.Bd3 e4 Double attack (16...e4 Decoy)) 16...Ne5–+ 17.Be5 de2 (17...Nd7 18.Bc3 de2 19.Qe2–+) 18.Qe2–/+ Re8 (better is 18...Nd7 19.d4 Ne5 20.de5 Qc7–+) 19.Bf4? (19.d4!?–/+) 19...Ne4 (19...a6 20.b6–+) 20.d3 (20.Be3 Bb4 21.Rfd1 Qf6–+) 20...Nc5 21.Nc5 Bc5 22.Qc2 (22.Qd2 Qb6–+) 22...Qf6 23.g3 g5 24.Qd1 gf4 25.Qg4 Qg5 26.Qd7 Re7 27.Qh3 Rae8 28.g4 f5 (28...f5 29.d4 Bd4 30.Rad1 fg4 31.Qg2 Bg2 32.Rd4 Bf1 33.Rd6 Re1 34.Rg6 Qg6 35.h3 gh3 36.Kh2 Qg2#; 28...Bf2 29.Rf2 Re1 30.Re1 Re1 31.Rf1 Qc5 32.d4 Qd4 33.Qe3 Qe3#) 0–1. Chirpii,Alexandru (1650) – Jianu,Vlad Cristian (2225), Centrocoop Sept op–A, 1998.

8.d3 dc4 9.dc4 Qd1 10.Bd1 a6 11.0–0 (11.Nc3 ab5 A) 12.Nb5 Na6 (12...c6 13.Nbd4 Rd8 14.0–0 Nbd7 15.Bc2 Ba3+=; 12...Rc8 13.Bc2 Na6 14.a3 Nc5 15.Rd1 Bf3+=) 13.Be5 Nd7 14.Bc7 Bf6 15.Nfd4 Nc7–/+; B) 12.cb5 Rc8 (12...c6 13.Be2 cb5 14.Nb5 Rc8 15.a3 Nbd7+=) 13.Be2 Nd5 14.Nd5 Bd5 15.a3 c6+=) 11...Rd8 12.a4 (12.Be2 c5 13.Nc3 ab5 14.Nb5 Ra4 15.Nc3 Bf3=; 12.Nc3 ab5 13.Nb5 Na6 14.Be2 c6 15.Nbd4 c5+=) 12...Nbd7 13.Nbd2 (13.Be2 Nc5 14.Nbd2 Nfe4 15.Rfd1 ab5+=) 13...ab5 (13...Bb4 14.Bc2+= (14.Be2 Nc5 15.Rfd1 Nfe4=) 14...Bd6 15.Rfd1 Nc5=; 13...Bd6 14.Bc2 h6 15.Rfd1 Nc5=) 14.ab5= Ra1 15.Ba1 Ne4 (15...c6=) 16.Bc2 Ndc5 17.Rd1 f6 18.Ne4 Rd1 19.Bd1 Be4 20.Nd2 Bd3 21.Bf3 Kf7 22.g3 Bd6 23.h4 f5 24.Bc6 g6 25.f4 Ne4 26.Be4 fe4 27.Bc3 Be7 28.Kf2 Ke8 29.Kg2 Bc5 30.Kf2 h5 31.Nb3 Bc4 32.Nc5 bc5 33.Ba5 Kd7 34.b6 cb6 35.Bb6 Kd6 36.Ba7 Kd5 37.Bb8 Bd3 38.Be5 Kc6 39.Ke1 Kd5 40.Kd2 Bb5 41.Kc3 Bc4 42.Kd2+= Bf1 43.Kc3= Bh3 44.Bf6 Bf5 45.Be5= Bg4 46.Kd2 Kc4+= 47.Bd6 Bf3 48.Be5 Bg2 49.Kc2 Bh3 50.Bf6 Bf1 51.Be5 Bd3 52.Kb2 Kd5 53.Kc3 Be2 54.Kb3 Bd3 55.Kc3 Kc6 56.Bb8 Bb5 57.Be5+= Kd7 58.Kc2= Bf1 59.Kc3 Bg2 60.Kb3= Kc6 61.Bf6 Bf1 62.Kc3 Bd3 63.Kd2 Kd7 64.Kc3 Kc6 65.Kd2 Ba6 66.Be5= Bf1 67.Bf6 Ba6 68.Be5= Kd5 69.Ke1 Kc4+= 70.Kd2 Bb5 71.Kc2 Ba4 72.Kd2 Kd5 73.Kc3 Bd1 74.Kd2 Bf3 75.Kc3 Be2 76.Kd2 Bc4 77.Kc3 Bd3 78.Bf6 Be2 79.Be5= c4 80.Kd2 Bf3 81.Kc3 Bd1 82.Kd2 Bg4 83.Kc3 Be2 84.Kd2 Bd3 85.Kc3 Bf1 86.Kd2 Bd3 87.Kc3 Bf1 88.Kd2 Kc5 89.Kc3 Be2 90.Bd4 Kd5 91.Kd2 Bf3 92.Kc3 Bd1 93.Kd2 Ba4 94.Kc3 Bd1 95.Kd2 Bf3 96.Kc3 Bh1 97.Kd2 Bg2 98.Kc3 Bf1 99.Kd2 Bd3 100.Kc3 Kd6 101.Kd2 Bb1 102.Kc3 Bd3 103.Kd2 Bb1 104.Kc3 Ba2 105.Kd2 Kc6 106.Kc3 Bb3 107.Kd2 Kd5 108.Kc3 Ba4 109.Be5 Kc5 110.Bd4 Kb5 111.Be5 Bd1 112.Bd4 Be2 113.Be5= Bf3 114.Bd4 Bg2 115.Be5= Kc5 116.Bd4 Kb5 117.Be5 Bf1 118.Bd4 Bd3 119.Be5= Kc5 120.Bd4 Kb5 121.Be5 Kc5 122.Bd4 Kc6 123.Be5 Bf1 124.Bd4 e5+= 125.Be5 Kd5 126.Bd4 Ke6 127.Be5 Kf5 128.Kd2 Kg4 129.Ke1 Bd3 130.Kf2 Kf5 131.Ke1 Kg4 132.Kf2 Bc2 133.Bd4 Kf5 134.Be5 Ba4 135.Ke2 Kg4 136.Kf2 Bd1 137.Bd4 Kf5 138.Be5 Kg4 139.Bd4 Kf5 140.Be5 Bc2 141.Kf1 Kg4 142.Kf2 Kf5 143.Kf1 Bb1 144.Kf2 Bd3 145.Ke1 Ke6 146.Kd1 Bf1 147.Kd2 Kf5 148.Ke1 Bh3 149.Kf2 Ke6 150.Ke2 Bg2 151.Kd2 Kd5 152.Kc3 Bf1 153.Kd2 Bd3+= 154.Kc3 Be2 155.Kd2 Bf3 156.Kc3 Bg4 157.Kd2 Bh3 158.Kc3 Bf5 159.Kd2 Bc8 160.Kc3 Bf5 161.Kd2 Bd7 162.Kc3 Ba4 163.Kd2 Bd7 164.Kc3 Bb5 165.Kd2 Bc6 166.Kc3 Bd7 167.Kd2 Ba4 168.Kc3 Bd1 169.Kd2= Bb3 170.Kc3 Ke6 171.Kd2 Ba4 172.Kc3= Bb3 173.Kd2 Ba2 174.Bd4 Bb3 175.Be5= ½–½. Bonetti,Shane – Messiah, ICC, 2002.

8.d4 dc4 9.Bc4 Bb4 10.Nbd2 Bd2 11.Qd2 Bf3 12.gf3 Nbd7 13.Ke2 Ne8 14.a4 Nd6 15.Bd3 Qh4 16.Rac1 Rac8 17.Rhg1 Qh6 (17...Qh2?? 18.Rh1 Qh1 19.Rh1+–) 18.e4 Qd2 19.Kd2 Rfe8 20.e5 Nf5 21.Bf5 ef5 22.f4 Red8 23.Ke3 Nf8 24.Rc6 Ne6 25.h4 h6 26.h5 Rd7 27.f3 Rcd8 28.Rc4 Re8 29.Rd1 Nc5 30.Ba3 Ne6 31.d5 Nf8 32.Rcd4 Red8 33.Bb4 Re8 34.R1d3 Nh7 35.Rd2 (better is 35.Kd2!?+/–) 35...Nf6= 36.d6 cd6 37.Rd6 Rd6 38.Rd6 Nh5 39.Rd7 Ra8 40.Rb7 Ng3 41.Bd6 a6 (better is 41...Nf1!? 42.Ke2 Ng3 43.Kf2 Nh5+=) 42.Rb6+/– ab5 43.ab5 Ra2 44.Rc6 Rb2 45.b6 h5 46.Be7 Nf1 47.Kd3 Nd2?? (better is 47...Nh2+/–) 48.Rc2 (better is 48.Ba3 Rb6 49.Rb6 Nf3+–) 48...Rc2?? (48...Rb6 49.Rd2 Rb7+–) 49.Kc2 Nf3 50.Kd3 (50.Kd3 Ne1 51.Kc3+–) 1–0. Garcia Piedra,Juan – Gonzalez,Abel, Ch Asturias (team) (B), 1999.

8.cd5 ed5 9.0–0 c5 10.bc6 Nc6 11.Na3 Qd7 12.Nb5 Rac8 13.a4 a6 14.Nbd4 Ne4 15.Nc6 Qc6 (worse is 15...Bc6 16.Ba6 Rc7 17.Ne5+/–; 15...Rc6? 16.Ne5 Qc7 17.Nc6 Qc6 18.f3+–) 16.Rb1 Bd6 17.Ba1 Bc7 18.Bd4 g6 19.Qc1 Qa4 20.Qb2 Qc6 (20...a5!?=) 21.Bb6+/– Bb6 22.Qb6 Qb6 23.Rb6 Rc7 24.Ba6 Ba6 25.Ra6 Rb8 26.g4 f5 27.gf5 gf5 28.Rfa1 f4 29.Ra8 Rcc8 30.Rb8 Rb8 31.Ra5 fe3 32.fe3 ½–½. aspasio – gkthomas, net–chess.com, 2012.

8.cd5 Bd5 9.0–0 c5 10.Nc3 Bb7 11.Ne5 Nbd7 12.Nc6 Bc6 13.bc6 Ne5 14.Ba6 Nc6 15.Bb7 Qd7 16.Ba8 Ra8 17.Qa4 Nb4 18.Qd7 Nd7 19.a4 Nd3 20.Rfb1 Rb8 21.Ne2 Bf8 22.Nf4 Nb4 23.Ra3 e5 24.Nd3 f6 25.Ne1 Kf7 26.d3 Rd8 27.Kf1 Nb8 28.Ke2 Nd5 29.Raa1 Nc6 30.g4 Ndb4 31.Bc3 a5 32.Nf3 Be7 (worse is 32...Rd3 33.Bb4 Nb4 34.Rb4 Re3 35.fe3 ab4 36.Nd2+–; 32...Nd3 33.Rb6 Ndb4 34.Bb4 Nb4 35.Nd2+/–) 33.h4 Bd6 34.h5 Bc7 35.Rd1 Ke6 36.Bb2 Nc2 37.Rac1 N2b4 38.Ba1 Bd6 39.Rc3 Ne7 40.Nd2 Bc7 41.Rg1 h6 42.Bb2 Nc8 43.f3 Nd6 44.Ne4 Nd5 45.Ra3 Nb4 46.Rc3 Nd5 47.Rb3 Nb4 48.Rc1 Ne4 49.fe4 Kd7 50.Ba3 Rg8 51.Rbb1 Na2 52.Rc2 Nb4 53.Rcc1 Na2 ½–½. Fels,Bernhard (2020) – Cardoso,Sergio (1965), ZH–2010–0–00501, 2010.

8.a4 a5

9.0–0 dc4 10.Bc4 c6 11.d3 =.

9.0–0 c5 10.Na3 Nbd7 11.Ne5 (11.Rc1 Qc7=) 11...Ne5 12.Be5 d4 (12...Bd6 13.f4+=) 13.d3 (13.Bf3 Bf3 14.Qf3 Nd7 15.ed4 f6=) 13...Nd7 (13...Bd6 14.ed4 cd4 15.Bd6 Qd6 16.Nc2=) 14.ed4 f6 (14...Ne5 15.de5 Qd4 16.Bf3 Bf3 17.Qf3 Qe5 18.Rfe1+=) 15.Bg3 (15.Bf4 cd4 16.Bf3 Bf3 17.Qf3 e5=) 15...cd4 16.f4 Nc5 (16...Bb4 17.Be1=) 17.Nc2 Qd7 18.Bg4 (18.Bf3 Bf3 19.Qf3 Rad8=) 18...f5 (18...Nb3 19.Ra2=) 19.Bf3 Bf6 (19...Bf3 20.Qf3 Qd6 21.Rfe1=) 20.Re1 (20.Bb7 Qb7 21.Re1 Rae8=) 20...Rfe8 (20...Bf3 21.Qf3 Qd6 22.Ra3=) 21.Bb7 Qb7 22.Re2 (22.Qe2 Rac8=) 22...Re7 (22...Qc7 23.Ra3=) 23.Ne1 Nd7 (23...Qc7 24.Nf3=) 24.Nf3+= Rae8 25.Qd2 e5 26.fe5 White fights for the Initiative 26...Ne5 White creates threats along the open e–file 27.Be5 Be5 28.Ne5 Re5 29.Rae1 (29.Re5 Re5 30.Rf1 Qe7+=) 29...Re2 (29...Qc7 30.Re5 Re5 31.Rf1+=) 30.Re2 Qd7 (30...Qb8 31.h3 Re2 32.Qe2=) 31.Kf1 Kf7 (31...Rf8 32.Qf4+=) 32.Re8 Ke8 33.Qf4 Kf7 34.g4 Ke7 (34...g6!?+/–) 35.Qe5+– Kf7 36.gf5 g6 37.f6 g5 38.Kf2 Kg6 39.Kf3 h5 40.Ke4 g4 41.Qe7 Qf5 42.Kd4 The mate threat is Qg7 42...Qf2 43.Kd5 h4 Black intends g3 44.Qe8 Kf5 Threatening mate... how? 45.Qe5 Kg6 46.Ke6 g3 47.hg3 hg3 48.Qe4?? Kg5= 49.Qe5 Kg6 50.Qe4?? (50.Kd7 g2 51.Qe8 Kg5 52.Qg8 Kh4 53.f7+–) ½–½. Becher – Breitenfeld, corr DDR, 1970.

9.0–0 c5 10.Qc2 dc4 11.Na3 (11.Rc1 Bd6=) 11...Nd5 (11...Be4 12.Qc4 Bd5 13.Qc3=) 12.Nc4 Nd7 (12...Nb4 13.Qc3 Bf6 14.d4=) 13.Rad1 N7f6 (13...Rc8 14.e4 Nb4 15.Qc3=) 14.Nfe5 Nb4 15.Qb1 Qc7 16.f4 Rad8 (16...Bd5 17.d3=) 17.Bf3 (17.d3 Nfd5=) 17...Bd5 (17...Bf3 18.Rf3 Qb7 19.d4+=) 18.g4 (18.d3 Bf3 19.Rf3 Bd6=) 18...Qb7 (18...Nd3 19.Nd3 Bc4 20.Be2–/+) 19.g5= Nd7 20.Bd5 ed5 (worse is 20...Qd5 21.Nd7 Qd7 22.Nb6+=) 21.Nd7 Qd7 22.Ne5 (22.Nb6? Qg4 23.Kh1 Rb8–+) 22...Qc8 23.Rf3 (23.Rc1 Qh3+=) 23...f6 24.gf6 Bf6 25.Rg3 Qe6 26.Bc3 Bh4 27.Rg4 Bf6 (27...Be7 28.Rf1 Bf6 29.f5+=) 28.Rg2 (28.Rg3 Rde8+=) 28...d4 (28...Rde8 29.Re1+=) 29.ed4= Opening the e–file gets Black a lot of play 29...Be5 30.fe5 cd4 31.Bb4 ab4 32.Rg5 (32.Re1 Rf5=) 32...Rf4 33.Rf1 Rdf8 34.Rf4 Rf4 35.Qb4 h6 36.Rg3 (36.Rg2 Qf5 37.Qb3 Kh8+=) 36...Qe5+= Threatening mate: Qe1 37.Qc4 Kh7 38.Qc2 Kg8 (38...Rf5 39.Qb1+=) ½–½. Hebels,Albert – Diani,Jose Angel, corr ICCF WT–M–GT–289, 1991.

9.0–0 c5 10.d4 Nbd7 11.Nbd2 Rc8 12.Rc1 Re8 13.cd5 Nd5 14.Nc4 cd4 15.Nd4 Nc5 16.Ne5 Nb4 17.Bc4 1–0. Liushnin,Konstantin V – Paredes,Felipe Andres, ICCF Jubilee P143 email, 2001.

9.0–0 Nbd7 10.Nd4 (10.d4 dc4 11.Bc4 c6=) 10...dc4 (10...e5 11.Nc6 Bc6 12.bc6=) 11.Bc4= Nc5 (11...e5 12.Nc6 Bc6 13.bc6+=) 12.Qe2 (12.d3 e5 13.Nc6 Bc6 14.bc6 Qd6=) 12...Qd7 (12...Bd5 13.Nc3=) 13.Nf3 (13.Rc1 e5 14.Nc6 Bc6 15.bc6 Qd6=) 13...Nd5 (13...Rad8 14.d4 Nce4 15.Ne5=) 14.d4 Ne4 15.Ne5 Qe8 (15...Qd6 16.Ba3 Nb4 17.f3+=) 16.f3+= Nd6 17.Bb3 (17.Bd3 f6 18.Nc4 Nc4 19.Bc4 c6=) 17...Nb4 (17...c6 18.bc6 Ba6 19.Nd3+=) 18.Nc3+= c6 19.bc6 (19.e4 Rc8+=) 19...Nc6 20.Nc6 White fights for the Initiative 20...Bc6 21.d5 ed5 22.Nd5 Bd5 23.Bd5 Ra7 (23...Rd8 24.Rfd1+=) 24.Bd4+/– Qd8 (24...Rd7 25.Bc6+– (25.Bb6 Nc8–/+)) 25.Qb2 (25.Rab1 Nc8 26.Qb5 Rd7+/–) 25...Nc8 26.e4 Bf6 (26...Bc5 27.Rad1 Rd7 28.f4+=) 27.Bf6 Qf6 28.Qf6 gf6 29.Rab1 (29.Rac1 Rd8+–) 29...Rc7 (29...Rd8 30.Rfd1 Rad7 31.g3+/–) 30.Rfc1+– Rc1 31.Rc1 Ne7 (31...f5 32.ef5 Nd6 33.Rc7+/–) 32.Rb1 (32.Rc7 Nd5 33.ed5 Rd8=) 32...Nd5 (32...Rd8 33.Bc4+/–) 33.ed5 Rd8 34.Rb6 (34.Rd1!?+/–) 34...Rd5+= 35.Rb5 (35.Rb8 Kg7 36.Kf2=) 35...Rd1+– 36.Kf2 Rd2 (36...Rh1 37.Kg3+–) 37.Kg3+– Ra2 38.Ra5 Kg7 39.Kh3 Ra3 40.Kg3?? Ra2 41.Ra8 Ra3 42.Kg4 (42.Kg4 f5 43.Kf5+–; 42.a5 Kg6+–) 1–0. Saint Jean,Benoit (1610) – Herker,Christian, CP.2001.P.00093, 2001.

8.a4 dc4

9.Na3 a6 10.0–0 +=.

9.Na3 a6 10.Nc4 Qd5 11.Qb3 =.

9.Na3 c3 10.Bc3 Nd5 11.Bb2 Bf6 12.Bf6 Qf6 13.0–0 Rd8 14.Qb1 Nd7 15.Nc4 Nc5 16.Rc1 Ne7 17.d4 Be4 18.Qb2 Bd3 19.dc5 Qb2 20.Nb2 Be2 21.Nd4 White threatens to win material: Nd4xe2 21...Bh5 22.cb6 cb6 23.Nc4 Rac8 24.a5 ba5 25.Na5 Rc1 26.Rc1 Kf8 27.f3 Consolidates g4 27...Rc8 28.Rc8 Nc8 A minor pieces endgame occured 29.Ndc6 Ke8 30.Na7 Nb6 In the style of Nimzovich (30...Na7 31.b6 Passed pawn) 31.Kf2 Kd7 32.e4 f6 33.Ke3 e5 34.Kd3 Bf7 35.Kc3 Kc7 36.Kb4 Ba2 37.N7c6 g6 38.Nb3 Bb1 39.Nc5 Bc2 (39...Ba2 40.Ka5 Nc4 41.Ka6+/–) 40.Ne6 (better is 40.Ka5!? Nc4 41.Ka6+–) 40...Kd6+/– 41.Nf8 Bd3 (41...f5 42.ef5 Bf5 43.Nh7+/–) 42.g3 (better is 42.Nh7!? Nd7 43.h4+–) 42...g5 43.Nh7 Nd7 44.Na5 g4 Black threatens to win material: g4xf3 45.Kc3 White threatens to win material: Kc3xd3 45...Bb1 46.Nc4 Ke7 (better is 46...Kc5!? is worth looking at 47.Nd2 Ba2+=) 47.Nd2+– (47.fg4?! Be4 48.Nf6 Kf6+=) 47...Ba2 48.fg4 Bg8 49.Nf6! White pulls ahead. 49...Kf6 (49...Nf6 50.g5 Passed pawn; 49...Kf6 50.h4 Passed pawn) 50.h4 Be6 51.g5 Kg6 52.Nc4 Kh5 53.b6 Bc4 54.Kc4 Nb6 55.Kc5 Na4 56.Kd5 Nc3 57.Ke5 Ne2?? Black has lost his nerve... understandable when you consider his position (57...Kg6+–) 58.g4! forces the win 58...Kg6 (58...Kg4 59.g6 Passed pawn) 59.Kd6 Nc3 60.e5 Ne4 61.Kd7 Nc5 62.Kc6 Nd3 63.Kd6 Nf2 64.e6 Ng4 (64...Ne4 65.Kc7 Nc5 66.h5 Kg5 67.e7 Ne6 68.Kd7 Ng7 69.e8Q Ne8 70.Ke8 Kh6 71.Kf7 Kg5 72.Ke6 Kg4 73.h6 Kf3 74.Ke5 Ke2 75.h7 Kd2 76.Ke4 Kc2 77.h8Q Kb3 78.Kd4 Kb2 79.Kd3 Ka2 80.Qb8 Ka3 81.Kc3 Ka4 82.Qb4) 65.e7 Kf7 66.h5 Ke8 67.h6 Nf2 68.h7 Ne4 69.Ke5 Ng5 70.h8Q (70.h8Q Ke7 71.Qf6 Kd7 72.Qg5 Kc6 73.Ke6 Kb6 74.Kd6 Ka7 75.Kc7 Ka6 76.Qe5 Ka7 77.Qa1) 1–0. Sokolsky,Alexey – Chekhover,Vitaly, URS–ch sf Leningrad, 1938.

9.Na3 c5 10.Nc4= Nbd7 11.0–0 Ne4 12.d3 Nd6 13.Qc2 Nc4 14.dc4 Bf6 15.Rfd1 Bb2 16.Qb2 Qf6 17.Qf6 Nf6 (17...gf6?? 18.Rd7 Be4 19.Rad1+–) 18.Ne5 Rfd8 19.Nc6 (19.a5 Rd1 20.Rd1 ba5+=) 19...Rd1 20.Rd1 Kf8 21.Bf3 g5 22.Rd8 (22.g4!?+=) 22...Rd8+= 23.Nd8 Bc8 (23...Bf3!? 24.gf3 Ne8=) 24.Nc6+= g4? (better is 24...a5!?+=) 25.Na7+– gf3 26.Nc8 Nd7 27.gf3 Ke8 28.f4 Kd8 29.Nd6 Ke7 30.Ne4 (30.Nb7 h6+–) 30...f5 31.Nc3 Nf6 32.f3 Ne8 33.Nd1 Nd6 34.Nb2 Kf6 35.Kf2 Kg6 36.Nd3 Kh5 37.Ne5 Kh4 38.Kg2 Nc8 (38...Kh5 39.Kg3+–) 39.Nd7 (39.Nd7 Kh5 40.Kf2+–) 1–0. Orlik,Adam – Jaloszynski,Tadeusz, corr Poland, 1989.

9.Na3 c5 10.Nc4= Nbd7 11.0–0 Ne4 12.d3 Nd6 13.Nfe5 Nc4 14.Nc4 Nf6 (14...a6 15.Bf3 Bd5 16.e4=) 15.e4 (15.a5 Bd5+=) 15...Nd7 (15...a6 16.Qb3=) 16.f4 (16.a5 a6 17.ba6 Ba6 (worse is 17...Ra6 18.Qb3+/–) 18.ab6 Nb6+=) 16...f5 (16...a6 17.Qb3=) 17.e5 (17.Qb3 fe4 18.Bg4 Kh8 19.de4 Be4 20.Be6 Nf6+/–) 17...g5 (17...a6!?+=) 18.Bf3+/– Bf3 19.Qf3 g4 20.Qc6 Kf7 21.g3 (21.Nd6 Bd6 22.ed6 a6+/–) 21...Rc8 22.Qg2 h5 (22...Kg8 23.Rfd1+=) 23.Rac1 h4 24.Kf2 (24.d4 Nb8+/–) 24...h3 (24...Rh8 25.d4 Nf8 26.dc5 hg3 27.hg3 (27.Qg3 Bc5 28.Ke1 Rh3–+) 27...Rc5 28.Rfd1=) 25.Qh1 Nb8 26.Rfd1 Qd5 27.Qd5 (27.a5 Nd7=) 27...ed5 28.e6 Kg8 (28...Ke6 29.Re1 Kd7 30.Ne5 Kd6 31.Ng6=) 29.Ne5 d4 30.Re1 Rfe8 31.Nf7 Kg7 32.Re2 Rc7? 33.Bd4!+– Bf6 34.Bf6 Kf6 35.Rce1 Rce7 36.Re5 Re6 37.Nd6! Rd6 Deflection from e8 38.Re8 Eliminates the defender e8 38...Nd7 39.R1e3 c4 40.Rd8 cd3+/– 41.Ke1 Re6 42.Kd2 Nc5 43.Rf8 Ke7 44.Rf5 Na4 45.Re6 Ke6 46.Re5 Kf6 47.Kd3 Nb2 48.Kd4 Na4 49.Rg5 Nc5 50.Rc5! (50.Rc5 bc5 51.Kc5+–) 1–0. Schuehler,Ernst – Jaloszynski,Tadeusz, corr ICCF EU/M/GT/233 (year?).

9.Na3 Bd5 10.Bc4 A) 10...a6 11.0–0 ab5 (11...c6 12.d3 Bc4 13.dc4 Qc7 14.Be5=; 11...Re8 12.d3 c6 13.Ne5 ab5 14.ab5=; 11...Ba3 12.Bd5 Qd5 13.Ra3 ab5 14.ab5=; 11...c5 12.d3 ab5 13.Bd5 ed5 14.Nb5=; 11...Ra7 12.d3 c6 13.Qe2 Qd7 14.Ne5+=) 12.Bd5 Qd5 13.Nb5 Na6 14.Bf6=; B) 10...Bc4 11.Nc4 a6 (11...c6 12.0–0 Qd5 13.Qb3 Rc8 14.d3=; 11...Qd5 12.Qb3 a6 13.0–0 ab5 14.ab5+=) 12.0–0 ab5 13.ab5 Ra1 14.Ba1=; C) 10...Ba3 11.Bd5 Bb2 12.Ba8 Ba1 13.Qa1 Na6 14.Bc6=; D) 10...c6 D1) 11.Bd5 Qd5 (11...Nd5 12.0–0 a6 13.d4 Nf6 14.Qe2=) 12.Qc2 cb5 13.ab5 a6 14.ba6+=; D2) 11.Qc2 Be4 (11...Bf3 12.gf3 cb5 13.ab5 a5 14.Bd3+=; 11...cb5 12.ab5 Bf3 13.gf3 a5 14.Bd3+=) 12.d3 Bf3 13.gf3 a6 14.Rg1+=; D3) 11.Rc1 Qd6 (11...cb5 12.Nb5 Nbd7 13.0–0 a6 14.Nbd4=; 11...Re8 12.0–0 Ba3 13.Ba3 Bc4 14.Rc4=; 11...Ba3 12.Ba3 Re8 13.bc6 Nc6 14.Bb5=; 11...Bc4 12.Rc4 cb5 13.Nb5 a6 14.Nbd4=; 11...Bd6 12.bc6 Bc6 13.Nb5 Be7 14.0–0=) 12.Bd5 Qd5 13.Qc2 Rc8 14.Bf6+=.

9.Na3 Bd5 10.Nc4 a6 (10...c6 11.0–0 a6 12.Qb3 cb5 13.ab5 Qe8 14.Nd4=; 10...c5 A) 11.d4 cd4 (11...Nbd7 12.0–0 a6 13.Qc2 Be4 14.Bd3=; 11...a6 12.0–0 Nbd7 13.Qc2 Be4 14.Bd3=; 11...Ne4 12.0–0 Nd7 13.Qc2 Rc8 14.Rac1=; 11...Qc7 12.dc5 Bc5 13.0–0 Nbd7 14.Rc1=; 11...Re8 12.0–0 Nbd7 13.Qc2 Rc8 14.Rfd1=) 12.Qd4 Bb4 13.Ncd2 Qe7 14.Qh4=; B) 11.0–0 Nbd7 (11...a6 12.Qc2 Nbd7 13.d3 Qc7 14.e4=) 12.a5 a6 13.Nb6 Nb6 14.ab6+=; C) 11.Qc2 a6 (11...Nbd7 12.0–0 a6 13.d3 Qc7 14.ba6=; 11...Re8 12.0–0 a6 13.d4 Nbd7 14.Rfd1=; 11...h6 12.0–0 a6 13.d3 Nbd7 14.e4=) 12.0–0 Nbd7 13.d3 Qc7 14.e4=; D) 11.a5 Nbd7 (11...ba5 12.Bc3 Ne4 13.Ba5 Qe8 14.Qc2=) 12.0–0 a6 13.ba6 b5 14.Nce5=; E) 11.d3 Nbd7 (11...a6 12.0–0 ab5 13.ab5 Ra1 14.Ba1=; 11...Kh8 12.0–0 a6 13.Qc2 Nbd7 14.e4+=) 12.0–0 a6 13.Qc2 Qc7 14.Rfb1=) 11.0–0 ab5 (11...c6 12.Qb3 cb5 13.ab5 Qe8 14.Nd4=) 12.ab5 Ra1 13.Qa1 (13.Ba1 Re8 14.d3=) 13...Nbd7 (13...c6 14.Qa4= (14.bc6 b5 15.Nce5 Nc6 16.Nc6 Bc6 17.Nd4=)) 14.Qd1 (14.d3=) 14...Qa8 15.Qc2 Qa2?? (better is 15...c6=) 16.Ra1+– (16.Ra1 Ra8 17.Ra2 Ra2 18.Nd4+–) 1–0. pierre – shooting_star, internet, 2008.

9.Bc4 a6 10.0–0 =.

8.a4 c6

9.0–0 a6 10.d3 =.

9.0–0 dc4 10.Bc4 a6 11.d3 =.

9.0–0 dc4 10.Bc4 cb5 11.ab5 Nbd7 (11...a5 12.d3=) 12.d4 (12.Qe2 Ne4+=) 12...Ne4 (12...Qc7 13.Bd3=) 13.Nc3 (13.Qe2 Bd6+=) 13...Ndf6 (13...Nc3 14.Bc3 Qc7 15.Nd2=) 14.Qc2 (14.Ne4 Be4 15.Qe2 Qb8+=) 14...Qc7 (14...Nc3 15.Qc3 Bf3 16.gf3=) 15.Bd3 (15.Ne5 Bd6=) 15...Nc3 (15...Rfc8 A) worse is 16.Ne4 Qc2 17.Bc2 Rc2 (worse is 17...Ne4 18.Bd3+=) 18.Nf6 Bf6+=; B) 16.Rfc1 Nc3 17.Qc3=) 16.Qc3 Qc3 17.Bc3 Nd5 (17...Rfc8 18.Rfc1=) 18.Bd2+= Rfd8 (18...Rfc8 19.Rfc1+=) 19.Rfc1 (19.Ra4 Nf6+=) 19...Bd6 20.Ra4 (20.Rc2 Nf6+=) 20...Nc7 (20...Nf6 21.Rca1+/–) 21.Rca1 (21.Bb4 Ne8+/–) 21...a5 22.ba6 Bc6? (better is 22...b5!? 23.R4a2 Ba6+/–) 23.R4a2+– Ra7 (23...Bf3 24.gf3 Ra7 25.Rb1+–) 24.e4 Rda8 25.d5 (better is 25.Be3!?+–) 25...ed5+= 26.Nd4 Bd7 27.ed5 b5? 28.Nc6 Bc6 29.dc6 Be5 30.Rb1?? Ra6= 31.Ra6 Ra6+= 32.Be4 f6 33.Bb4 Ra4 34.Bc2+= Ra6 35.Be4 Kf7 36.h4 h5 37.g3+= Ke6 38.f4 Bd4 (38...Bd6 39.Bd6 Kd6 40.Rd1 Kc5 41.Rd7+/–) ½–½. Trokenheim,Marek – Borowski,Kazimierz, corr private, 1986.

9.0–0 dc4 10.Bc4 Bd6 11.d3 =.

9.0–0 Nbd7 10.Nd4 (10.cd5 Nd5 11.Nc3 N7f6=) 10...Rc8 (10...c5 11.Nf3+=) 11.bc6 (11.d3 c5 12.Nf3 Bd6=) 11...Bc6 12.Nc6 Rc6 13.cd5 Nd5 14.Bb5 (14.Nc3 Nc3 15.Bc3 Bd6=) 14...Rc7 (14...Rc8 15.Nc3 Nc3 16.Bc3=) 15.Qg4 (15.Nc3 N7f6=) 15...N7f6 16.Qh3 (16.Qf3 Nb4=) 16...Nb4+= 17.Be5 (17.Qg3 Rc2 18.Bc3 Nbd5+=) 17...Rc8 (17...Bd6 18.Bc3+=) 18.d4= Qd5 (18...Bd6 19.Bd6 Qd6 20.Na3=) 19.Nd2 (19.Na3 Nd7 20.Bf4 a6=) 19...Nd7 (19...Rc2 20.Rfd1=) 20.e4 (20.Bg3 Rc2 21.Rfd1 Nf6=) 20...Qb7 21.Bd7 (21.Rfd1 Ne5 22.de5 Rc2+=) 21...Qd7 22.Qg4 (better is 22.Nf3!?=) 22...f6–/+ Black gets strong initiative 23.Bg3 (23.Bf4 Nc2 24.Rad1 f5 25.ef5 A) 25...Rf5?! 26.Be5 g6 27.a5=; B) 25...Nd4?! 26.f6 Bf6 27.Ne4=; C) worse is 25...Qa4 C1) worse is 26.fe6 h5 (worse is 26...Nd4 27.Be3 Rcd8 28.Ra1+/–) 27.Qh5 Rf4+=; C2) 26.Be5 Bf6 27.Bf6 Rf6 28.Ne4 (28.fe6?! Re8=) 28...Rf5 29.d5+/–; D) 25...ef5–/+) 23...Nc2 (23...f5 24.ef5 ef5 25.Qh5–+) 24.Rad1 f5 (24...Nd4?! 25.Nb3 Bc5 26.e5=; 24...Qd4? 25.Qe6 Kh8 26.Qe7 Qa4 27.Qe6+–) 25.ef5 ef5 (25...Rf5?! 26.Be5 g6 27.a5=; 25...Qd4 26.Qe2 Rfe8 27.Qe6 (27.fe6?! Qa4 28.Nf3 Rc6=) 27...Kh8 28.Nf3+/–; 25...Nd4? 26.Nb3!? Bc5 27.Nd4 ef5 28.Nb3+–; worse is 25...Qa4 26.Be5 Bf6 27.Bf6 Rf6 28.Ne4 (28.fe6?! Re8=) 28...Rf5 29.d5+/–) 26.Qe2 f4 27.Nc4 fg3 28.Qc2 gh2 29.Kh1 Qd5 30.Nb6?? ab6–+ 31.Qb2 Qd6 32.Qb3 White intends d5 32...Kh8 33.Rde1 Bf6 34.Re6 Qc7 35.d5 Bd4 36.d6 Qd7 37.Rd1 Rc3 38.Qd5 Bf6 39.g4? h6 40.Rde1 Rc5 41.Qe4 Rd8 42.Qg6 Rcc8 43.Rf6 gf6 44.Qh6 Qh7 45.Qf6 Qg7 46.Qf5 Rc5 47.Qd3 Qg4 (47...Qg4 48.Qd1 Qf4–+) 0–1. Wall,Bill – Britt,Paul, Dayton, OH, 1982.

8.a4 Nbd7

9.0–0 dc4 10.Bc4 a6 11.d3 =.

9.0–0 Nc5 10.Na3 Nce4 (10...a6 11.Bf6 Bf6 12.d4=) 11.d3+= Nd6 12.Qc2 (12.cd5 Nd5 (worse is 12...Bd5 13.e4+–) 13.Qc2 c5=) 12...Rc8 (12...c6 13.Be5=) 13.Ne5 (13.c5 bc5 14.Qc5 a6 15.ba6 Ba6+=) 13...dc4 (13...c6 14.Bf3=) 14.Nac4 Nc4 (14...c6 15.Bf3 Nd5 16.Nd6 Bd6 17.Nc6 Bc6 18.bc6+=) 15.dc4 Bd6 16.Rfd1 Qe7 (16...c5 17.a5+=) 17.Rac1 (17.a5 c5+=) 17...Rfd8 (17...a5 18.ba6 Ba6 19.Bf3+=) 18.Bf3 (18.Bd3 Ra8+=) 18...Bf3= 19.Nf3 Ba3 (19...c6 20.Rd2=) 20.Ba3+= Qa3 21.Nd4 a5 (21...a6 22.Nc6 Rd1 23.Rd1+=) 22.Nc6 (22.c5 e5 23.Nc6 Rd1 24.Rd1 Re8+=) 22...Rd1 23.Rd1 Qc5 24.Qd3 Re8 25.Qd4 (25.e4 Ng4 26.Rd2 Qg5+=) 25...Qf5 26.Qd3 (26.Qd2 e5+=) 26...Qg4 (26...Qc5 27.e4 Ng4 28.Rd2+=) 27.Ne5 (27.f3 Qg5+=) 27...Qh5 28.Nd7 Kh8 (28...Ne4 29.Qc2+=) 29.Nf6+/– gf6 30.Qd7 Rg8 31.Rc1 Qf3 (better is 31...Qg5!? 32.g3 Qe5+/–) 32.g3 +–. Wilk,Krzysztof – Ranby,Hans, corr 3GMM–23, 1997.

9.0–0 Nc5 10.a5 ba5 11.d4 Nce4 =.

9.0–0 Nc5 10.d4 Nce4 11.cd5 Qd5 12.Nbd2 Nd2 13.Qd2 Ne4 14.Qc2 Rac8 15.Bd3 (15.Bc4!? Qf5 16.Ne5+=) 15...c5= 16.Be4 (16.dc5 Bc5 17.Qe2 Rfd8=) 16...Qe4+= 17.Qe4 Be4 18.Nd2 Bd3 19.Rfc1 cd4 20.Bd4 Bb4 21.Nf3 Be4 22.h3 Bf3 (22...f6!?+=) 23.gf3= f6 24.f4 Rce8 25.Rc7 Ra8 (25...Rf7 26.Rac1=) 26.Rac1 Bd6 27.Rd7 Bb4?? (better is 27...Rfd8 28.Rb7 Rdb8 29.Rb8 Rb8=) 28.Rcc7+– Rfc8 29.Rg7 Kf8 30.Rh7 (better is 30.Rcf7 Ke8+–) 30...Rc7 31.Rc7 f5 32.h4 a6 (32...Bd6 33.Rh7 Ke8+–) 33.Rh7 (worse is 33.Bb6 ab5 34.ab5 Rb8+–) 33...Ke8 34.Rh8 (worse is 34.Bb6 ab5 35.Rh8 Bf8 36.ab5 Rc8+–) 34...Bf8 35.Bg7 (better is 35.a5 ba5 36.b6+–) 35...Ke7 (35...Kf7 36.Rf8 Rf8 37.Bf8 ab5 38.ab5 Kf8+–) 36.Bf8 Rf8 37.Rf8 (37.Rf8 ab5 38.Ra8 ba4 39.Ra4+–) 1–0. Hal1958 – Acrylato, playchess.de, 2004.

9.0–0 c6 10.Nc3 cb5 (10...dc4 11.Bc4 cb5 12.Bb5=) 11.ab5 (11.cb5 a6=) 11...Nc5 (11...dc4!? 12.Ra4 Nc5 13.Rc4 a6=) 12.d4+= Ncd7 13.cd5 Nd5 14.h3 Nc3 15.Bc3 Nf6 16.Qa4 Qd7 17.Ne5 Qd6 18.Bb2 Nd5 19.Rfc1 f6 20.Ba3 Qd8 21.Nc6 Bc6 22.bc6 Ba3 23.Qa3 Nc7 24.g3 (24.Qb4 Rf7+/–) 24...Qe8 (24...a6 25.Qb4 b5 26.Bf3+=) 25.Ra2 (25.Ba6 Na6 26.Qa6 Qh5+/–) 25...Qf7 26.Rb2 Rfc8 27.Bc4 Nd5 (27...Qh5!?+=) 28.Ba6+/– Rc7 29.e4 Ne7 30.Qd6 Nc6? (better is 30...Ng6+/–) 31.Rc6+– Rc6 32.Qc6 Qf8 (32...Qe8 33.d5 ed5 34.ed5 Rd8+–) 33.Bc4 White plans d5 33...Kh8 34.Be6 h6 35.d5 a5 36.Qb6 a4 37.d6 a3 38.Ra2 Qd8 39.Qc7 Qc7 40.dc7 g6 41.Rd2 Kg7 42.Rd8 a2 43.Ra8 (43.Ra8 a1Q 44.Ra1 f5 45.c8Q Kf6 46.Qd8 Ke6 47.Ra6 Kf7 48.Qd7 Kf8 49.Ra8#) 1–0. pierre – chessophi, internet, 2008.

8.cd5 Nd5

9.0–0 c5 10.Nc3 Bf6 11.a3 Nd7 12.Qc2 Ne5 (12...a6 A) 13.Rfd1 Qe7 (13...ab5 14.Nb5 Qe7 15.Rab1 Bb2 16.Rb2 e5 17.Qf5=) 14.Nd5 (14.Bd3 ab5 15.Bh7 Kh8 16.Be4 b4 17.ab4=) 14...ed5 15.Rab1 ab5 16.Bb5 d4 17.Re1=; B) 13.Nd5 Bd5 14.ba6 (14.Bf6 Nf6 15.ba6 Bf3 16.Bf3 Ra6 17.d4=) 14...Bf3 15.Bf3 Bb2 16.Qb2 Ra6 17.Rfd1=) 13.Ne5 (13.Nd5 Nf3 14.Bf3 Bb2 15.Qb2 Bd5 16.e4 Bb7 17.a4=) 13...Be5 14.f4 (14.Nd5 Bb2 15.Qb2 Bd5 16.Qc2 Bb7 17.Bd3=; 14.Rac1 Nc3 15.dc3 Qg5 16.g3 Qh6 17.Rfd1=) 14...Bc3 15.Bc3 (15.dc3? Ne3 16.Qb1 Nf1 17.Qf1 Qd2–+) 15...Nc3 (15...a6 16.Bd3 Qh4 17.Rf3=) 16.dc3 Qe7 (16...a6 17.Rfd1=) 17.Bd3 f5 18.Rad1 (18.Rfd1 Rfd8=) 18...Rad8 (18...a6 19.Qb3=) 19.Rfe1 Rf6 (19...Qf6 20.Bc4=) 20.Bc4 Bd5 21.Qb3 Bc4 22.Qc4 Rff8 23.Rd8 Rd8 24.e4 Qf7 25.a4 Kf8 26.a5 Rd6 27.h3 Qd7 28.Kh2 h6 29.ef5 ef5 30.Qe2 ba5 31.Qc4 (31.Qe5 Kf7=) 31...Rd5 32.Ra1 Qd8 33.Ra5 Qa5 34.Qd5 Qb5 (34...Qc3 35.Qa8 (35.Qf5?! Ke7=) 35...Ke7 36.Qa7 Ke6 37.Qb6 Kd5 38.Qc6 Kd4 39.b6+–) 35.Qf5 Kg8 ½–½. Woelfelschneider,Peter – Kollmann, corr, 1998.

9.Nc3 a6 A) 10.0–0 A1) 10...ab5 11.Nb5 (11.Bb5 Ba3 12.Rb1 Nc3 13.Bc3 Bd6 14.Bc4+=) 11...Nc6 12.d4 Na7 13.Nc3 Bd6 14.Qc2=; A2) 10...Nc3 11.Bc3 (11.dc3 ab5 12.Bb5 Be4 13.Qe2 Qd5 14.Bc4+=) 11...ab5 12.Bb5 Ra3 13.Be2 Nc6 14.Bb2=; B) 10.a4 c5 11.0–0 Bf6 12.d4 ab5 13.ab5 Nc3 14.Bc3=.

9.Nc3 c6 10.Rc1+= A) 10...Nc3 11.Bc3 (11.Rc3 cb5 12.Bb5 a6 13.Be2 Bd5 14.0–0=) 11...cb5 12.Bb5 a6 13.Be2 Ba3 14.Rb1=; B) 10...cb5 11.Nb5 Nc6 12.0–0 Rc8 13.d3 a6 14.Nc3+=.

9.Nc3 c6 10.Nd5 Qd5 11.Qb3 cb5 12.Qb5 Rc8 13.Qd5 Bd5 14.Kd1 +=.

9.Nc3 Nd7 10.0–0 (10.Nd5 Bd5 11.0–0 c6 12.bc6 Bc6 13.Rc1 Rc8 14.Nd4=) 10...c5 (10...a6 11.Nd5 (11.a4 N7f6 12.Ne5 Nc3 13.Bc3 Nd5 14.Qc2=) 11...Bd5 12.ba6= Nc5 13.d4 Na6 14.Qb1=; 10...Nc3 11.Bc3 (11.dc3 a6 12.c4 Nc5 13.Bd4 Bd6 14.Qc2=) 11...c6 12.a4 Rc8 13.Qc2 Bd6 14.Rfc1=) 11.bc6 (11.Nd5 Bd5 (11...ed5 12.Qc2 Re8 13.Rfb1 a6 14.a4=) 12.Qc2 Bf6= 13.Bc3 Bb7 14.Rfd1=; 11.Qc2 Nb4 12.Qb3 a5 13.Rfd1 Bf6 14.a3=) 11...Bc6 (11...Nc3 12.Bc3 Bc6 13.Qc2 Nc5 14.Ne5=) 12.Nd4 (12.Rc1 Nc3 13.Rc3 Bd5= 14.Rc2=) 12...Nc3 (12...Bb7 13.Bf3 Nc5 14.Nd5 Bd5 15.Bd5 Qd5 16.d3+=) 13.Bc3 Bb7 (13...Bd5 14.Bf3 Nc5 15.Nc6 Bc6 16.Bc6=) 14.Bf3 Bf3 15.Qf3 Ne5 (15...Bc5 16.Rfc1=) 16.Qe4+= Bf6 (16...Nd7 17.Nc6 Qe8 18.Ne7 Qe7 19.Bb4+/–) 17.f4 (better is 17.Ne6!? fe6 18.Be5+/–) 17...Nd7= 18.f5 (18.Nc6 Qc7 19.Bf6 Nf6=) 18...Nc5+= 19.Qg4 Qd7 20.fe6 fe6 21.Bb4? (21.Nb3 Bc3 22.dc3 Qd3+=) 21...Rae8?? (better is 21...h5!? 22.Qh5 Bd4 23.Bc5 Bc5–+ (23...bc5?! 24.ed4 Qd4 25.Kh1+=)) 22.Rac1 (22.Bc3+=) 22...Qd5 (better is 22...h5!? 23.Qf4 Nd3–/+) 23.Nb5= Rf7 (23...Qd7 24.a4 Bb2 25.Rf8 Rf8 26.Bc5 bc5 27.Rc5 Qd2 28.Qe6 Kh8 29.h3+/–) 24.Nc7 (better is 24.Rf6!? Rf6 25.Nc7+/–) 24...Rc7= 25.Rf6 Na6 (25...Qa2!? 26.Rcf1 e5+=) 26.Rc7= Nc7 27.Bc3 Qd7 28.Rf4 Nd5= 29.Rd4 Qe7 30.Ba1 Qf6 31.Qd1 Qg6?? 32.Rg4+– Qf5? 33.Rg7 Kf8 34.Qf1 Qf1+/– 35.Kf1 Re7 36.Re7 Ne7 37.Be5 a6 38.Bd6+– Kf7 39.Be7 Ke7 40.Ke2 Kd6 41.Kd3 Kd5 42.e4 Kc5 43.Kc3 e5 44.g4 b5 45.g5 b4 46.Kc2 a5?? 47.h4 Kd6 48.h5 Ke7 49.Kb3 1–0. Furlong,Kevin – Wyeth,Anthony J, Oxford op, 1998.

7.Be2 Nbd7

8.0–0 dc4 9.Bc4 a6 10.ba6 Ba6 11.Ba6 Ra6 12.Qe2 =.

8.cd5 Nd5 9.0–0 0–0 =.

8.0–0 0–0

9.d4 dc4 10.Bc4 a6 11.a4 =.

9.d4 c6 10.cd5 cb5 11.de6+/– fe6 12.Bb5 a6 13.Bc4 Bd5 14.Qb3 b5 15.Bd5 ed5 16.Nc3 Nb6 17.e4 b4 18.Nd5 Nfd5 19.ed5 Nd5 20.Ne5 Kh8 21.a3 a5 22.Nc6 Qd6 23.Ne7 Ne7 24.ab4 ab4 25.Ra8 Ra8 26.h3 h6 27.Re1 Nc6 28.d5+/– Na5 29.Qf3 (29.Qf3 Qg6 30.d6+–) 1–0. carocan (1710) – mister1962 (1750), kurnik, 2011.

9.d4 Ne4 10.Nc3 f5 (10...Nc3 11.Bc3 dc4 12.Bc4=) 11.cd5 ed5 12.Ne5 (12.Qc2 Rc8+=) 12...Bg5 (12...Ne5 13.de5 a6 14.a4=) 13.f4 (13.Qc2 Ne5 14.de5 a6+=) 13...Bh6 (13...Ne5!? 14.Ne4 fe4 15.de5 Be7=) 14.Ne4+/– fe4 15.Ng4 Rf7 (15...a6 16.Ba3 Rf7 17.Nh6 gh6 18.Bb4+/–) 16.Nh6 gh6 17.Qe1 (17.Bh5 Rg7+/–) 17...Rg7 (17...a6 18.Bh5 Rg7 19.a4+/–) 18.Rc1 Nf8 (18...a6 19.a4+/–) 19.g4 (19.f5 Qg5 20.Qf2 a6+/–) 19...Qf6 (19...a6 20.a4+/–) 20.Kh1 (20.Qg3 a6 21.a4 ab5 22.ab5 Ra2+/–) 20...Rc8 (20...a6 21.a4+/–) 21.Rc2 (21.Bc3 c6 22.a4 Rgc7+/–) 21...Qe7 (21...c6 22.bc6 Rc6 23.Rc6 Bc6 24.Qg3+/–) 22.Qg3 Kh8 23.Rfc1 Ne6 24.h4 Qd6 25.Kh2 Nd8 26.Rc3 Qd7 27.Ba3 Ba8 28.Bf8 Rf7 29.Bh6 c5 30.bc6 Rc6 31.Bb5 Rc3 32.Bd7 Rc1 33.f5 Rd7?? 34.Qe5 (34…Kg8 35.Qe8#) 1–0. Rohrbacher,W – Muensch, Hockenheim BAD, 1994.

9.d4 Ne4 10.Nbd2 f5 11.a4 a5 12.Qb3 h6 13.Rfc1 g5 14.Ba3?? Ba3–/+ 15.Qa3 g4 16.Ne5 Nd2–+ 17.Ng6 Rf7 18.cd5 Bd5 19.Qc3? Ne4 20.Qc7 Qc7 21.Rc7 Kg7 22.Nf4 Ndf6 23.Rac1 Raf8 24.f3 gf3 25.gf3 Ng5 26.Kf2 Bb3 27.Bd1? Bd1–+ 28.Rf7 Rf7 29.Rd1 Rc7 30.h4? Rc2 31.Kg3 Nge4! 32.fe4 Ne4 33.Kf3 Rf2 0–1. carocan (1750) – zakapior51 (1745), kurnik, 2011.

9.cd5 Nd5 10.e4 Nf4 =+.

6.d4 c5

7.c4 Bd6 8.dc5 bc5 9.cd5 ed5 =.

7.c4 Bd6 8.Be2 0–0 9.0–0 =.

7.c4 Bd6 8.Be2 Nbd7 9.0–0 (9.cd5 ed5 10.dc5 bc5=) 9...Qc7 (9...0–0 10.cd5 ed5 11.dc5 bc5 12.Nc3=) 10.Nbd2 (10.cd5 ed5 11.Nc3 0–0=) 10...Rg8 (10...cd4!? 11.ed4 0–0=) 11.cd5+= Bd5 12.Nc4 Bc4 (12...Be7 13.dc5 Nc5 14.Be5+=) 13.Bc4 g5 (13...cd4!? 14.Qd4 Rd8+=) 14.dc5+/– Bc5 15.Rc1 g4 16.Nd4 h5 (16...Ne5 17.Be2+/–) 17.Qb3 (17.Bd3 Ne5+–) 17...Ne4 (better is 17...Bd4!? 18.Bd4 Nc5+/–) 18.Be6+– Ndf6 19.Bd5 Nd2 20.Bc6 (20.Ba8?! Nb3 21.Bc6 Ke7 22.Nb3 Bd6+/–) 20...Nd7 (20...Qc6 21.bc6 (21.Nc6?! Nb3 22.ab3 Ne4+/–) 21...Nb3 22.ab3 Bd4 23.Bd4+–) 21.Qd5 (better is 21.Bd7 Qd7 22.Qd3+–) 21...Nf1?? (21...0–0–0 22.Rfd1 Ne5 23.Bb7 Qb7 24.Qe5 Rd5+–) 22.Bd7 Qd7 23.Qa8 Qd8 24.Qd8 Kd8 25.Kf1 Kd7 26.Ke2 Re8 27.Nb3 Bd6 28.g3 f5 29.Kd3 Re5 30.Be5 (30...Be5 31.Nd4+–) 1–0. Fichte,Wolfgang (1790) – Henneberg,Olga, Bad Zwesten op 6th, 2002.

7.c4 Nbd7 8.Ba3 Rc8 9.dc5 Nc5 10.Nbd2 =+.

7.c4 Nbd7 8.Ba3 Be7 9.Nbd2 (9.cd5 Nd5 10.e4 N5f6=+) 9...0–0 10.Bd3 (10.Bb2 a6=+) 10...cd4 (10...dc4 11.Nc4 a6 12.ba6 Ra6 13.Qb3–/+) 11.Be7 Qe7 12.Nd4 (12.ed4 e5 13.de5 dc4 14.Nc4 Bf3 15.gf3 Ne5–/+) 12...Nc5 13.Be2 (13.N2f3–/+) 13...Nfe4 (13...dc4 14.Bc4 Bg2 15.Rg1–/+) 14.Qc2 (14.cd5!? Bd5 15.Ne4 Be4 16.f3=+) 14...Nd2–/+ 15.Qd2 dc4 16.0–0 (16.Bc4 Rfd8 17.Qc3 Rac8–+) 16...Qg5 (16...e5 17.Nc6 Bc6 18.bc6–/+) 17.Nf3 Qf6 (17...Qg6 18.Rfd1–/+) 18.Bc4 (18.Rac1 Bd5–/+) 18...Bf3 19.gf3 Qf3 20.Qe2 Qe2 (20...Qf5 21.Rfd1–/+) 21.Be2 Rfd8 22.Bf3 Rac8 23.Rfd1 Kf8 24.Kf1 Ke7 25.Ke1 Nd3 26.Kf1 Ne5 27.Be2 Rd1 28.Bd1 Rc5 29.a4 Nd3 30.Ke2 Nb2 31.Ra2 Nd1 32.Kd1 Rc4 33.f3 e5 34.Kd2 f5 35.Kd3 Rc5 36.Rc2 Rc2–+ 37.Kc2 Kd6 38.Kd3 Kc5 39.Kc3 g5 (40.e4 fe4 41.fe4 h5–+) 0–1. Old Sisyphus – tossubanaani, ChessWorld.net, 2005.

7.Be2 Bd6 =.

6.d4 Bd6

7.Nbd2 0–0 8.c4 a6 9.a4 =+.

7.Nbd2 0–0 8.c4 Ne4 9.a3 (9.Qc2 c5=) 9...f5 (9...a6 10.Ne4 de4 11.Ne5=) 10.Bd3 Nd7 11.a4 a5 12.0–0 Qf6 13.Rb1 Qh6 14.Ne5 Ne5 15.de5 Bc5 (15...Bb4 16.Ne4 fe4 17.Be2=) 16.Ne4 (16.cd5 ed5 17.Nb3 Be7=) 16...fe4 17.Be2 Rf2 18.Bd4 Bd4 (18...Rf1 19.Bf1 Rf8 20.Qc1–/+) 19.ed4 Rf1 20.Bf1 Qe3 21.Kh1 Rf8 22.Qg4 (22.Be2 Rf2 23.Bg4 Qh6–/+) 22...Rf5 (22...Qd4 23.Qe6 Kh8 24.cd5 Bd5 25.Qe7–/+) 23.Qh4 Qf2 24.Qf2 Rf2 25.g3 dc4 26.Bc4 Bd5 27.Bd5 ed5 28.Rc1 Rf7 29.Kg2=+ Re7 30.Rc6 Kf7 31.h4 Ke8 32.g4 Kd7 33.h5 Re6–/+ 34.Rc1 c6 35.bc6 Rc6 36.Rf1 Ke7 37.g5 Rc4 38.g6 hg6 39.hg6 Rd4 40.Rf7 Ke6 41.Rg7 e3 42.Kf3 e2 43.Ke2–/+ Rg4 44.Rb7 Ke5 45.Rb6 d4 46.Kf3+= Rg1 47.Rb5+/– Kf6 48.Ra5 (48...Kg6 49.Rd5+/–) 1–0. willow27 – kingscrusher, ChessWorld.net, 2005.

7.Nbd2 0–0 8.Bd3 a6 =+.

7.Nbd2 0–0 8.Be2 c5 9.bc6 (9.dc5 bc5 10.0–0 a6=) 9...Nc6=+ 10.0–0 Qc7 11.c4 Ng4 12.h3 Nh2 13.cd5 Nf1 14.dc6 Nd2 15.cb7 Nf3 16.Bf3 Rad8 17.Qa4 Qb8 18.Rc1 Rfe8 19.Bc6 Re7 20.e4 Bh2 21.Kh1 Bf4 22.Rc4 Rc7 23.e5 Bg5 24.Ba3 Be7 25.Be7 Re7 26.Qc2 Rc7 27.f4 (better is 27.Qe4!?=) 27...b5!–/+ (27...Rb7?! 28.Bb7 Qb7 29.f5=) 28.Rc5 (28.Bb5 Rb7) 28...Rd4 29.Rb5 Rf4 30.Qc5 h6 31.Qd6 Kh7 32.g3 Rf1? (32...Rf2 33.Kg1 Ra2 34.Be4 g6–/+) 33.Kg2+– Re1 34.Kf2 Rc1 35.Qc7= Rc2 36.Ke3 Qc7 37.Be4 g6 38.Bc2 Qc2? 39.Rb3 Qc5= 40.Kd3 Qd5–+ 41.Kc2 ½–½. Garbacki,Mieczyslaw – Buczinski,Henryk, corr Krakow, 1994.

7.Be2 0–0 8.0–0 a6 9.a4 =.

7.Be2 0–0 8.0–0 Ne4 9.c4 (9.Nbd2 a6=) 9...dc4 10.Bc4 Qf6 (10...a6 11.Qc2=+) 11.Nbd2 (11.Bd3 Nc5 12.dc5 Qb2 13.cd6 Qa1+/–) 11...Qg6 (11...a6 12.d5 Qg6 13.Ne4 Qe4 14.Nd2=+) 12.Bd3 f5 (12...Nf2 13.Bg6 Nd1 14.Bf7 (< 14.Rad1 fg6 15.Nc4 a6=+) 14...Rf7 15.Rfd1=) 13.Nc4 Ng5 (13...a6 14.Nce5 Qh6 15.a4=) 14.Ng5 Qg5 15.g3 (15.f3=) 15...f4 (15...a6 16.a4=) 16.Nd6 (16.Qc2 Qd5 17.e4 Qh5+=) 16...cd6+= 17.ef4 Qh6 (17...Rf4!? 18.d5 Rh4+= (18...Bd5?? 19.Bc1+–)) 18.Qg4 Nd7 19.Bc1 Rae8 20.Qg5 Qh3 21.f3 Rf6 22.Qg4+/– Qg4 23.fg4 e5? 24.g5 Rfe6 25.f5 R6e7 26.f6 gf6+/– 27.gf6 Rf7 28.Bg5 1–0. gtate (1930) – ramesis (2060), net–chess.com, 2005.

7.Be2 a6 8.a4 =.

6.d4 Nbd7

7.a4 c5 8.dc5 Bc5 9.Nbd2 Qc7 10.Nb3 (10.Rc1 0–0=) 10...Bb4=+ 11.Nbd2 0–0 12.Bd3 Bc3 (12...e5 13.Bf5=+) 13.Bc3 Qc3 14.0–0 Nc5 (14...e5 15.Bf5=+) 15.Be2 (15.Nb3 e5 16.Qd2 Qd2 17.Nfd2 Rfc8=) 15...Rfd8 (15...Rfc8 16.Nd4=+) 16.Qc1 Rac8 (better is 16...Nce4=+) 17.Nb1?? (better is 17.a5=) 17...Qa1–+ 18.Nd4 (18.Nbd2 Qc3–+) 18…Na4 0–1. tanto (1715) – prawnking (1715), net–chess.com, 2002.

7.Nbd2 Be7 8.c4 dc4 9.Bc4 0–0 10.0–0 c5 11.Rc1 cd4 12.Bd4 Rc8 13.Qe2 Nd5 14.e4 N5f6 15.Bf6 Bf6 16.e5 Be7 17.Bd3 Rc5 18.Ne4 Be4 19.Qe4 g6 20.a4 Qc7 21.Rfe1 Rc1 22.h3 Re1 23.Qe1 Nc5 24.Qc1 Rc8 25.Qe3 Nd3 26.Qd3 Rd8 27.Qe4 Bc5 28.Ng5 Qd7 29.Qh4 h5 30.Qf4 Rf8 31.g4 Qd4 32.Qg3 Qd1 33.Kg2 Rd8 34.gh5 Qh5 35.Qf4 Rf8 36.Qg3 Be7 37.Ne4 Bh4 38.Qe3 Be7 39.Nf6 Bf6 40.ef6 Kh7 41.Qf4 Qf5 42.Qh4 Qh5 43.Qh5 gh5 44.Kg3 Kg6 45.Kf4 Kf6 46.h4 Rg8 47.Kf3 Kf5 0–1. TriAngel – frightknight, ICC 1999.

6.Be2 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nc3 Bb4 11.0–0 Bc3 (11...0–0!?=) 12.Bc3+= cb5 13.Bb4 Qd7 14.Ne5 Qc7 15.Qa1 Bc6 (15...Qc2?? 16.Bb5 Nfd7 17.Nd7+–) 16.Nc6 Qc6 17.Rb1 Nfd7?? (better is 17...h6+/–) 18.Qg7+– Rf8 19.Ra1 (worse is 19.Bf8 Qc2 20.Bd6 Qb1 21.Bf1 Nc6 22.Qg8 Nf8 23.Qf8 Kd7+–) 19...Nc5 20.d4 Nbd7 21.Ra7 h5 (21...h6 22.Qh6 Rg8+–) 22.Bh5 (22.Bh5 Ke7 23.Rd7 Kd7 24.Qf8+–; worse is 22.dc5 bc5 23.Ba5 Ke7+–) 1–0. Janek – Nick, internet, 2016.

7.a4 Bd6 8.0–0 0–0 9.Nc3 e5 =+.

7.a4 Be7 8.0–0 0–0 9.d3 c5 10.Nbd2 ab5 11.ab5 Ra1 12.Qa1 Nbd7 13.Qa7 Qa8 (13...Qc7!? 14.Ra1 Ra8 15.Qa8 Ba8 16.Ra8 Nb8=+) 14.Ra1+= Qc8 15.Qa4 Qc7 16.Qh4 Ra8 17.Ra8 Ba8 18.Qa4 Bb7 19.h3 h6 (19...Bd6 20.Qh4=) 20.c4 Ne8 21.Qa1 Qc8 22.Ne5 Ne5 23.Be5 Bd6 24.Bb2 Bb8 25.Bf3 Qc7 26.g3 Qe7 27.h4 Qd7 28.Be5 Bd6 29.Bg2 f6 (29...Qc7 30.Bc3=) 30.Bc3 (30.Bd6 Nd6 31.Qa7 Nc8=) 30...Bb8 31.Qd1 Qf7 32.Qg4 Nd6 33.Bh3 f5 34.Qf4 Qe7 35.h5 dc4 36.Nc4 Bc7 37.Be5 Nb5 38.Bc7 Nc7 39.Nb6 Qd8 40.Qc4 Ba6 41.Qc5 Bd3 42.Bf1 Bf1 43.Kf1+= Ne8 44.Qc6 Kf7 45.Nd7 Qc7 46.Qc7 Nc7 47.Ne5 Ke7 48.Ke2 Nd5=+ 49.Kd3 Nf6 50.Kc4 Nh5 51.Kc5 g5 52.Nc6 Kf6 53.Kd6 Ng7 54.f4 Nh5–+ 55.Nd8? Ng3 56.Ne6 g4 57.Kd5 h5 58.Nc5 h4 59.Nd3 h3 60.Nf2 Ne4 (61.Nh1 h2–+) 0–1. Abromeit,Guenter – Nittschalk,Karl, DESC, 1999.

6.Be2 c5

7.0–0 h6 8.c4 Nbd7 9.Nc3 Rg8 10.d4 Qc7 11.cd5 ed5 12.Rc1 0–0–0 13.dc5 Nc5 14.Na4 Qd6 15.Be5 Qe6 16.Nc5 bc5 17.Qa4 Qb6 18.Nd4 Kd7 19.Nc6! Bc6 20.bc6 Qc6 21.Bb5 Qb5 22.Qb5 Ke6 23.f4 Nd7 24.Qc6 Ke7 25.Qd5 Nb6 26.Qc5 Ke8 27.Qb5 Ke7 28.Rc7 Rd7 29.Rfc1 f6 30.Bb2 g5 31.Rd7 Nd7 32.Rc7 1–0. Hoelldorfer,August – Lang,Ludwig, Afro op Augsburg, 1998.

7.bc6 Nc6 8.c4 dc4 9.Bc4 Be7 10.0–0 0–0 11.d4 Rc8 12.Nbd2 Rc7 13.Qe2 Qa8 14.Rac1 Rfc8 15.e4 Na5 16.Bd3 Rc1 17.Rc1 Rc1 18.Bc1 Nc6 19.Bb2 Nb4 20.Bb1 Qe8 21.a3 Na6 22.Qd3 g6 23.Ne5 Nc7 24.Qc4 Bd8 25.a4 b5 26.Qc5 a6 27.Qb6 Ba8 28.ab5 (better is 28.Qb8!?+/–) 28...Qb5= 29.Qd6 Qe8? (better is 29...Qb2 30.Qd8 Nce8 31.Qa8 Qd2 32.Qa6 Ne4 33.Be4 Qe1 34.Qf1 Qe4=) 30.Ba3 Nb5 31.Qa6 Na3 32.Qa8 Nb1 33.Nb1 Bb6 34.Qe8 Ne8 35.Nc6 Nd6 36.Nc3 Kf8 37.Kf1 Ke8 38.Ke2 Kd7 39.Ne5 Ke7 40.Kd3 f6 41.Nc4 Nc4 42.Kc4 Bc7 43.h3 Kd7 44.Nb5 Bb6 45.f3 Kc6 46.Nc3 Kd6 47.Na4 Ba7 48.Nc5 e5 49.Nb7 Kc7 50.de5 Kb7 51.ef6 Kc6 52.e5 Bc5 53.f4 Ba3 54.Kd4 Bb2 55.Ke4 Ba3 56.g4 Kd7 57.Kd5 Bc1 58.e6 Ke8 59.Ke4 Bb2 60.g5 Bc1 61.h4 Bd2 (61...Kd8 62.f5 Bd2 63.fg6 hg6 64.Kf3+–) 62.Kf3 Bc1 63.Kg4 Kf8 64.f5 Bb2 (64...Ba3 65.fg6 hg6+–) 65.fg6 hg6 66.h5 gh5 67.Kh5 1–0. Schulz,Karsten (2345) – Berthold,Andreas (2175), Muehlhausen op, 2003. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 e6 4.b5 b6 5.e3 Bb7 6.Be2 c5)

6.Be2 Bd6

7.0–0 0–0 8.c4 Nbd7 9.d4 Qe7 10.Ne5 Rfd8 (10...a6 11.Nd2=) 11.Nd2 a6 (11...dc4 12.Qc2= (worse is 12.Ndc4 Ne5 13.de5 Be5–/+)) 12.a4 (12.ba6!? Ra6 13.c5 bc5 14.Ba6 Ba6 15.Nc6+/–) 12...dc4 13.Bc4 ab5 14.ab5 Ra1 15.Ba1 Ra8 16.Ndf3 (16.Nc6 Bc6 17.bc6 Nf8=) 16...Be5 17.Ne5 Ne5 18.de5 Ne4 19.Qc2 Nc5 20.Bd4 h6 21.Ra1 Ra1 22.Ba1 Qg5 23.g3 Qg4 24.Be2 Bf3 25.Bf3 Qf3 26.Bd4 Ne4 27.Bb2 (27.h3 h5+=) 27...g5 (27...Ng5 28.Kf1–/+) 28.h3 (28.Ba3!?=) 28...h5–/+ 29.Bd4 (29.Bc3!?–/+) 29...Kg7 30.Bb2 Qf5 31.Kg2 (31.f4 Kg6 32.Kg2 Ng3 33.Qf5 Nf5–+ (33...Kf5?? 34.Kg3 g4 35.hg4 hg4 36.Bd4+–)) 31...g4 32.h4 (32.hg4 hg4 33.Bc3–+) 32...Ng3–+ 33.Qf5 (33.Qd1 Ne4 34.f4 Nc5–+) 33...Nf5 (33...ef5?? 34.Kg3 Kf8 35.Kf4+–) 34.Ba3 Kg6 35.Kf1 f6 36.ef6 Kf6 37.Bb2 Ke7 38.Be5 Kd7 39.Bf6 Nd6 40.Kg2 Nb5 41.f3 gf3 42.Kf3 Nd6 43.Kf4 Nf7 44.Ke4 c5 45.Kd3 Kc6 46.Kc3 Kd5 0–1. Petrochenko,Maria (1715) – Turikov,Viktor (2270), St Petersburg RUS, Chigorin Mem, 2012.

7.0–0 0–0 8.d3 c6 9.a4 cb5 10.ab5 Nbd7 11.Nbd2 Qc7 12.c4 dc4 13.Nc4 Bc5 14.Qb3 Bd5 15.Rfc1 Bc4 (better is 15...Rfd8!?+/–) 16.Qc4+– (16.dc4?! Bd6+=) 16...Rfc8 17.Qh4 Qd8 18.Qg3 Be7 19.Rc8 Qc8 20.Nd4 Nb8?? (better is 20...Qc5 21.Ra4 a5+–) 21.Bf3 Nd5 (21...Nbd7 22.Ba8 Qa8+–) 22.Ne6!! (22...g6 23.Bd5+–) 1–0. marekt – Superspeedy, ChessWorld.net, 2003.

7.0–0 0–0 8.d4 c5 9.Nbd2 Nbd7 10.Ne5 (10.c4 Qe7=) 10...a6 11.Ndf3 cd4 (11...c4 12.ba6 Ra6 13.a4+=) 12.ed4 Be5 13.Ne5 Ne5 14.de5 Ne4 15.Bd3 (15.f3 Nc5=) 15...h6 (15...Qc7 16.a4=) 16.Bd4 a5 (16...Qc7!?=) 17.Qg4+= Qc7 18.a4 (18.Rfe1 Nc5+=) 18...Nc5 (18...Rfc8 19.f4+=) 19.f4 g6 (19...Ne4 20.Rf3+/–) 20.f5+/– ef5 (20...Nd3? 21.fg6 (21.cd3?! ef5 22.Qh4 h5+–) 21...Ne5 22.gf7 Kh7 23.Qe6+–) 21.Bf5 Bc8 (21...Rae8 22.Ra3 Bc8 23.Bc8 Qc8 24.Qh4+/–) 22.Bc8 (22.e6!? Be6 23.Qh4 Kh7+– (23...gf5?? 24.Qf6 Qe5 25.Be5 Na4 26.Qg7; 23...Bf5?? 24.Qf6 Qe5 25.Be5 Bc2 26.Qg7)) 22...Rac8 (22...Rfc8 23.Rf6 h5 24.Qh3+/–) 23.Rf6+/– h5 (23...Rfe8 24.Raf1 h5 25.Qf3+–) 24.Qg5 Ne4 25.Qh6 Nc3 (25...Nf6?? 26.ef6 Qh2 27.Kh2 Rc2 28.Qg7) 26.Re1 Qc4 27.Rg6 (27.Be3!? Ne4 A) 28.Bb6 Qa4 (28...Nf6?? 29.ef6 Qc5 30.Bc5 Rc5 31.Qg7) 29.Ref1 Qc2+– (29...Nf6 30.ef6 Qd4 31.Bd4 Rc2 32.Qg7); B) 28.Rb6+–) 27...fg6= 28.Qg6 Kh8 29.Qh5 Kg7 30.Qg4 Kh7 31.e6 (31.Qh5 Kg8 32.Qg6 Kh8 33.Qh5 Kg7 34.Qg4 Kh7 35.Qh5 Kg7=) 31...Rf1 32.Rf1 Qd4 33.Qd4 Ne2 34.Kf2 Nd4 35.e7 Re8 (35...Rc2?? 36.Ke3 Re2 37.Kd4 Re7 38.Kd5+–; 35...Nc2 36.Rc1+=) 36.Rd1 Nc2 37.Rd5 Re7 38.Rd6 Rf7 39.Ke2 Rb7 40.g4 Nb4 (40...Na1 41.Kd3 Nb3 42.Kc4=) 41.h4 Rg7 (41...Kg7 42.h5=) 42.g5 (42.Rb6 Rg4 43.Rb7 Kg6=) 42...Rg6= 43.Rd7 Rg7 44.Rd4 Rg6 45.Kf3 Na2 46.Rc4 Nb4 47.Kg4 Nd3 48.Rc7 Rg7 49.Rc3 (49.Rc8 Nf2 50.Kf5 Rf7 51.Ke6 Rg7=) 49...Nc5 (49...Rd7 50.Rc8+=) 50.Rc4 Re7 51.Kf5 Rf7 52.Ke5 Rf3 53.h5 Rb3 54.Kd5 Rb4 55.Rb4 ab4 56.Kc4 b3 57.Kc3 Kg7 58.Kb2 Kf7 ½–½. zd3nik (1875) – frankvelbrati (1760), gameknot.com, 2015.

7.0–0 a6 =.

7.0–0 Nbd7 8.d4 0–0 9.c4 dc4 10.Bc4 Qe7 11.a4 a6 12.Nc3 e5 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.Qe2 a5 14.Rad1 Rae8 15.g3 (15.Rfe1 Ba8+=) 15...Bf3= 16.Qf3 ed4 17.ed4 (< 17.Rd4 Be5 18.Rh4 g5–/+) 17...Bb4 18.Na2 Bd6 19.Nc1 Ne4 20.Bd5 Nef6 21.Bc6 Qd8 22.Nd3 Re7 23.Ne5 Qc8 24.Nc4 Bb4 25.Ne3 g6 (25...Rd8 26.Rc1+/–) 26.Qf4 (26.d5 Ne8+/–) 26...Bd6 27.Qh4 Ne8 (27...Qd8 28.Rfe1+/–) 28.Ng4 f6 29.Rde1 h5 (29...Qd8 30.d5+/–) 30.Re7+– Be7 31.Ne3 Nb8 32.Qe4 Nc6 33.Qg6 Ng7 34.bc6 Qe8 35.Qe4 Bd6 36.Qd5 Qf7 37.h4 Re8 38.Kg2 Qd5 39.Nd5 Re2 40.Rb1 Kf7 41.Ne3 Ne6 42.Kf3 Rb2 43.Rb2 Nd4 44.Ke4 Nc6 45.Rb5 Ne5 46.f4+– Nd7 47.Rh5 Nc5 48.Kd5 Na4+/– 49.Rh7 Kg6? 50.Rh8 Nc3+/– 51.Ke6 Ne4 52.Rg8 Kh7 53.Kf7 Bc5 54.Nf5 Nd6 55.Nd6 Bd6 56.f5 (56...Bg3 57.Rg3+–) 1–0. Sviridov,Valentin (2200) – Fichtl,Jiri (2285), Karvina 5th, 1982.

7.0–0 Nbd7 8.d4 0–0 9.h3 c5 10.c4 Rc8 11.Nbd2 dc4 12.Bc4 Bb8 13.Rc1 Qe7 14.Be2 Rfd8 15.Qb3 Ne4 16.Ne4 Be4 17.Nd2 Qd6 18.f4 Bb7 19.Bf3 Bf3 20.Nf3 cd4 21.Bd4 Nc5 22.Bc5 Rc5 23.Qb2 (better is 23.Nd4!?=) 23...Qd3–/+ 24.Kf2 Qb5 25.Qb5 Rb5 26.Rc2 g6 27.Rfc1 Rbd5 28.Rc8 Kg7 29.Rd8 Rd8 30.Rc2 Bd6 31.Nd4 Bc5 32.Nb3 Rc8 33.Nc5 Rc5 34.Rc5 (better is 34.Rd2!?–/+) 34...bc5–+ 35.Ke2 Kf6 36.Kd3 Ke7 37.Kc4 Kd6 38.g4 f6 39.e4 g5 40.f5 e5 41.Kb5 a6! 42.Kc4 (42.Ka6 c4 Passed pawn) 42...Kc6 43.a4 Kd6 44.Kd3 Kc7 45.Kc4 Kb6 46.Kb3 Ka5 47.Kc4 (47.h4 gh4 48.g5–+) 47...Ka4 48.Kc5 Kb3 (better is 48...a5 49.Kd5 Kb5–+) 49.Kd5 a5 50.Ke6? (50.h4 h6 51.hg5 hg5 52.Ke6–+) 50...a4 51.Kf6 a3 52.Kg5 (52.Kg7 a2 53.f6 a1Q–+) 52...a2 53.f6 (53.Kh6 a1Q 54.Kh7 Qa7 55.Kg6 Qe3–+) 53...a1Q 54.f7 (54.Kf5–+) 54...Qf1 55.Kh6 Qf7 56.g5 Qg6 0–1. Ruhle,Ernst Albrecht (1645) – Maeder,Jean Claude (1985), Liechtenstein Seniors op, 2007.

7.0–0 Nbd7 8.d4 h5 9.Nbd2 Qe7 10.c4 Rh6 11.cd5 Bd5 12.Qc2 e5 13.e4 Bb7 14.Bd3 Kd8 15.Rfe1 Nh7 16.de5 Ne5 17.Nd4 Nd3 18.Qd3 Rg6 19.N2f3 Kc8 20.Nc6 (20.Nf5 Qe6 21.N5h4+– (21.Ng7?! Qg4 22.g3 Rg7 23.Bg7 Qg7+=; 21.Bg7?! Rg4+–; 21.Nd6?! Qd6 22.Nd4 Qd7+/–)) 20...Bc6+/– 21.bc6 Bb4?? (better is 21...a6+/–) 22.Qa6+– Kd8 23.Qb7 Qe6 (23...Rc8 24.Red1 Bd6+–) 24.Qa8 Ke7 (24...Qc8 25.Rad1 Bd6+–) 25.Rad1 Bd6 26.e5 Rg2 27.Kh1 Rh2 28.Kh2 1–0. Abreu Suarez,Isauro (1995) – Guniaeva,Olga, La Laguna ESP, Open, 2013.

7.c4 dc4 8.Bc4 0–0 9.0–0 c6 10.a4 c5 11.d4 Nbd7 12.Nbd2 Bd5 13.Bd5 ed5 14.dc5 bc5 15.Qc2 Rc8 16.Rac1 d4 (better is 16...Qe7!?=) 17.ed4+/– cd4 18.Qd3 Rc1 19.Rc1 Ne5 20.Ne5 Be5 21.Nf3 Qb8 22.Ne5 Qe5 23.Bd4 Qg5 (23...Qd6 24.Qc3 Rd8 25.Qc5+–) 24.Qc3 (24.Qe3 Qd5+–) 24...Ne4 (24...Nd5 25.Qc5 Qd2 26.h3+–) 25.Qc2 Nf6 26.Bf6 (better is 26.Ba7!? Nd5 27.f3+–) 26...Qf6 27.a5 Qe5 28.Qc5 Qc5 29.Rc5 g6 30.Rc7 (30.b6 ab6 31.ab6 Rb8+–) 30...Rd8 31.g3 Ra8 32.a6 Kg7 33.Kg2 h6 34.Kf3 Kf6 35.Rb7 h5 36.Kf4 g5 37.Kf3 Kg6 38.g4 h4 39.h3 f6?? (39...f5+–) 40.Ke4 Re8 (40...Kh6 41.Kf5 Rc8 42.Kf6 Rf8 43.Ke7+–) 41.Kd5 Re5 42.Kd6 Re2 43.Ra7 Rf2 (43...Rd2 44.Kc7 Rc2 45.Kb8+–) 44.b6 Rd2 45.Ke7 f5 46.b7 (46.gf5 Kf5 47.Rd7 Re2 48.Kd8 g4+–) 46...Rb2 (46...Re2 47.Kd6 Rd2 48.Kc5+–) 47.Ra8 f4 (47...fg4 48.b8Q Rb8 49.Rb8 gh3+–) 48.b8Q Rb8 49.Rb8 f3 50.Rb6 Kg7 51.Rb5 f2 52.Rf5 f1Q 53.Rf1 Kg8 (54.a7 Kh7 55.Rf7 Kh6 56.a8Q Kg6 57.Qc6#; 53...Kg6 54.Rf6 Kg7 55.a7 Kh7 56.Rf7 Kg6 57.a8Q Kh6 58.Qc6#) 1–0. revbodio2 – Dona2, Live Game Caissa's Web, 2004.

7.c4 dc4 8.Bc4 a6 9.d4 =+.

7.c4 Nbd7 8.0–0 dc4 9.Bc4 a6 10.ba6 Ba6 11.Ba6 Ra6 12.Qe2 =.

7.c4 Nbd7 8.0–0 Rc8 9.cd5 Bd5 10.d3 (10.Nc3 c6+=) 10...0–0 (10...c6 11.e4 cb5 12.ed5 ed5 13.Nc3+–) 11.Nbd2 (11.e4 Bb7+=) 11...c5 12.e4 c4?? (better is 12...Bb7=) 13.Bf6 (13.ed5 c3 14.Bc3 Rc3+/–) 13...Nf6 14.ed5 ed5? (better is 14...c3 15.de6 cd2 16.ef7 Kh8 17.Qd2 Rf7+–) 15.dc4+– dc4 16.Nc4 (16...Nd5 17.Re1+–) 1–0. mrkt – CTO, ICC, 2005.

7.Be5 0–0 8.0–0 c6 9.c4 dc4 10.Bc4 cb5 11.Bb5? (better is 11.Bd6 Qd6 12.Bb5=+) 11...Be5–+ 12.Ne5 Qd5 13.Nf3 Qb5 14.Nc3 Qc5 15.Ne1 Nbd7 16.f3 Ne5 17.d4 (17.Rc1 Nc4 18.Nc2–+) 17...Qc3 18.de5 Qe5 19.e4 Qc5 20.Kh1 Ba6 21.Rg1 Nh5 22.g4 Nf4 23.Nd3 (23.Qc2–+) 23...Bd3 24.Qb3 (24.Qd2 Qe5–+) 24...Qf2 0–1. valpa – CYTO, HCL–B2083 playchess.de, 2003.

7.Be5 a6 8.Nc3 Ne4 9.0–0 Be5 =+.

7.h3 Qe7 8.a4 0–0 9.d3 h6 10.Nbd2 Nh7 (10...a6 11.0–0=) 11.Qc1 Nd7 12.Ba3 c5 13.bc6 Bc6 14.Bd6 Qd6 15.c4 Ndf6 16.Nd4 Bd7 17.0–0 dc4 18.Nc4 Qe7 19.Ne5 Rac8 20.Qb2 Rc5 21.Nb3 Rc7 22.Nd7 Rd7 23.Rfc1 Rfd8 24.Nd4 Qd6 25.Rc6 Qd5 26.Rac1 Qg5 27.Qb3 Nd5 28.Bg4 Re7 29.Be6?? (29.Nf3 Qf6+=) 29...fe6?? (29...Ne3 30.fe3 Qe3 31.Kh1 Qd4–/+ (31...fe6? 32.Ne6 Rde8 33.Nc7 Kh8 34.Ne8 Re8 35.Qf7+–)) 30.Ne6+= Re6 31.Re6 Kh8 32.a5 Nf8 33.Rec6 ba5 34.Rc8 Ne3 (34...Nb6 35.Rd8 Qd8+=) 35.g3 (better is 35.fe3!? Qe3 36.Kf1 Qf4 37.Ke2 Rc8 38.Rc8 Qe5 39.Kd1+/–) 35...Nf5= 36.Qb8?? (36.Qb5!? Rc8 37.Rc8=) 36...Kh7 (better is 36...Qc1! 37.Rc1 Rb8–+) 37.R1c7–/+ Rd3?? (better is 37...Ne6 38.Rd8 Nd8–/+) 38.Rc3?? (38.Rf8 Nd6 39.Rh8 Kg6 40.Qg8+– (40.Ra7?! Rg3 41.fg3 Qg3 42.Kf1 Qh3 43.Ke2 Qg2 44.Kd1 Qf3 45.Kc2 Qe2 46.Kb3 Qd3 47.Ka2 Qc2 48.Ka1 Qa4 49.Kb2 Qd4 50.Kc2 Qe4 51.Kd2 Qd4 52.Ke2 Qe4 53.Kf2 Qf4 54.Kg2 Qg5 55.Kf3 Qf5 56.Ke3 Qe4 57.Kd2 Qd4 58.Kc1 Qf4 59.Kb1 Qe4 60.Ka1 Qa4 61.Kb1 Qd1 62.Ka2 Qc2 63.Qb2 Qa4 64.Kb1 Qd1 65.Qc1 Qb3 66.Ka1 Qa4 67.Kb1 Qb3 68.Ka1 Qa4 69.Kb1 Qb3=)) 38...Rd1–+ 39.Kh2 Ng6 (better is 39...Qd2 40.Qa8 Qf2 41.Qg2 Qe1–+) 40.R3c5?? (40.Qb3 Rd8–+) 40...Rd2 (better is 40...Qd2 41.Qb7 Ng3 42.Qg7 Kg7 43.R8c7 Kg8 44.Rc8 Kf7 45.R8c7 Ne7 46.Kg3 Qd3 47.Kf4 Rd2 48.Re7 Ke7 49.Rc7 Kd6 50.f3 Qd4 51.Kf5 Qd5 52.Kf6 Qe6 53.Kg7 Rg2 54.Kh7 Qg6 55.Kh8 Qg8) 41.Rc2 Rd1 42.Qa7?? (42.R2c5 Qd2 43.Qb7 Ng3 44.Qf3 Nf1 45.Kg1 Ne3 46.Qd1 Qd1 47.Kh2–+) 42...Nge7 (42...Qf6 43.Qa8 Nd4 44.R8c3 Nc2 45.Rc2–+) 43.R8c5? (43.Rf8 Rd2 44.Rd2 Qd2–/+) 43...Qg6 (43...Qf6 44.R5c4 Nd5 45.Rg4–+) 44.Qa5? (44.Qb7 Qe6 45.Qg2 a4–+) 44...Nh4! 45.R5c3?? (45.gh4 Qg1 Mate attack) 45...Nf3!! 46.Rf3 Qc2 47.Qb5 (47.Qa8–+) 47...Qe4 48.Qb3 Qe1 (48...Qe1 49.Qd1 Qd1–+) 0–1. mikebaldini – basilvaos, gameknot.com, 2016.

6.Be2 Nbd7

7.0–0 Bd6 8.c4 0–0 9.cd5 Bd5 10.d4 Qe7 11.Nbd2 Rfc8 12.Nc4 c5 13.Nd6 Qd6 14.dc5 Qc5 (worse is 14...Rc5 15.Ba3+/–) 15.a4 Qc2 16.Bf6 Nf6 17.Nd4 Qd1 18.Rfd1 Ne4 19.Bf3 Nc3 20.Bd5 Nd5 21.Nc6 Kf8 ½–½. Fischbach,Rainer (1670) – Wolter,Uwe, Leipzig VfB op, 2007.

7.0–0 Bd6 8.c4 dc4 9.Bc4 0–0 10.d3 c5 11.Nbd2 Qc7 12.a4 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Qc2?? (15.Qe2 h6=) 15...Qg5?? (better is 15...Ng4 16.g3 Nh2–+) 16.g3 Ng4 17.Nb3?? (better is 17.e4+=) 17...Nh2–+ 18.Kh2 (18.e4 Nf1 19.Rf1–+) 18...Qh5 0–1. cristero (2460) – mbarker (2410), net–chess.com, 2015.

7.0–0 Bd6 8.d4 0–0 9.Nbd2 (9.Ba3 a6=) 9...Qe7 10.a4 a6 11.c4 ab5 (11...c5 12.bc6 Bc6 13.a5 ba5 14.Ne5=) 12.ab5 Ra1 13.Qa1 Ra8 14.Qb1 Ne4 (14...dc4 15.Nc4 Be4 16.Bd3 Bf3 17.gf3=) 15.Qc2 (15.Bd3 Ndf6=) 15...f5 (15...Nd2 16.Nd2 dc4 17.Nc4=) 16.Ra1 Qf8 (16...Ra1 17.Ba1 Qf6 18.Bb2=) 17.cd5 (17.Ra8 Qa8 18.Ne4 fe4+=) 17...ed5 (17...Ra1 18.Ba1 ed5 19.Bc3=) 18.Ne5 (18.Ra8 Qa8 19.Bd3 Qe8+=) 18...Ra1= 19.Ba1 Qa8 20.Bb2 Ndf6 (20...Qe8 21.Ndf3+=) 21.Ne4 (21.Ndf3 Qe8+=) 21...fe4 22.Qb1 (22.f3 ef3 23.Bf3 Qe8=) 22...Qa4 23.Qd1 Qd1 24.Bd1 Kf8 25.f4 ef3 26.gf3 g6 27.Kf2 Bc8 28.Be2 Bf5 29.Bc3 Ke7 30.h4 Ke6 31.Bd3 Nh5 32.Bf5 Kf5= 33.Kg2 Be5 34.de5+= Ng7 35.Kg3 Ne6 36.Kf2 Nc5 37.Ke2 Nd7 38.f4 Nc5 39.Kf3 Ne4 40.Bb4 Ke6 41.Ke2 Ng3 42.Kf3 Nf5 43.Be1 Ne7 44.Bb4 Nc8 45.Bc3 Kf5 46.Bb4 Na7–/+ 47.Be7 Nb5 48.Bd8 h5 49.Ke2 Ke6 50.Kd3 Kd7 51.Bf6 c5 52.Kc2 Nc7 53.Kd3 b5 54.e4 Ke6 55.Bd8–/+ de4 56.Ke4 Nd5 57.Bg5 b4 58.Kd3 b3 59.Kd2 c4 60.Bh6 c3 61.Kc1 Nb4 62.Kb1 Nd3 (63.f5 gf5–+) 0–1. Semenko,Georg – Fluegel,Wilhelm, 6sen.BayEM Schney, 1994.

7.0–0 Bd6 8.d4 Qe7 9.c3 c5 10.bc6 Bc6 11.a4 0–0 12.Na3 a6 13.h3 b5 (better is 13...Ne4!?=+) 14.ab5= ab5 15.Nb5 Bb5 16.Ra8 Ra8 17.Bb5 Ba3 (17...Nb6!?=) 18.Ba3+/– Qa3 19.Ne5 Ne5 20.de5 Ne4 21.Qc1 Qc3 22.Qc3 Nc3 23.Bd3 Na4 24.Ra1 Nb6 25.Ra8 Na8 26.f4 Nc7 27.f5 Na8 28.f6 gf6 29.ef6 Nb6 30.e4 de4 31.Be4 Nd7 32.g4 Nf6 33.Bd3 Nd5 34.Kf2 Kg7 35.Kf3 f6 36.h4 Nc7 37.Bc4 e5 38.Ke4 Ne8 39.Kf5?? (better is 39.Kd5=+) 39...Nd6–+ 40.Ke6 Nc4 41.Kd5 Ne3 42.Ke6 Ng4 43.h5 (43.Kf5–+) 43...e4 44.Kf5 e3 45.Kg4 e2 46.h6 Kh6 47.Kf5 e1Q 48.Kf6 Qe4 49.Kf7 Kh5 50.Kf6 Kg4 51.Kg7 Qf5 52.Kg8 Qf6 53.Kh7 Qg5 54.Kh8 Kf5 55.Kh7 Kf6 0–1. MasterofDisaster – Simson9, Live Game Caissa's Web, 2004.

7.0–0 Be7 8.d4 0–0 9.Nbd2 c5 10.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0–0 8.0–0 d5 9.d4 Nbd7 10.Nbd2).

7.a4 Bd6 8.c4 Nc5 9.0–0 0–0 10.Na3 A) 10...Qe7 11.cd5 (11.d4 Nce4 12.Ne5 Nd7 13.f3 Nef6 14.Bd3 a6 15.Qc2 ab5 16.Nb5 dc4+=) 11...Bd5 12.Nc4 a5 13.Rc1 Rad8 14.d4 Nce4 15.Nfe5 Bb4 16.f3 Nd6+=; B) 10...a6 11.d3 (11.d4 Nce4 12.Ne5 Nd7 13.f3 Nef6 14.ba6 Ba6 15.Nb5 Ne8 16.f4 Ne5=) 11...c6 12.Ne5 Qc7 13.bc6 Be5 14.Be5 Qe5 15.cb7 Nb7 16.d4 Qc7=.

7.a4 Bd6 8.c4 Nc5 9.0–0 0–0 10.d4 Nce4 (10...Ncd7 11.a5 (11.cd5 Nd5 12.e4 Nf4 13.Nc3 a6 14.Bc4 ab5 15.ab5 Qf6 16.g3 Ra1=) 11...dc4 12.a6 Bd5 13.Nbd2 c5 14.Nc4 Bc7 15.Rc1 Qb8 16.Nce5 Ne5+=) 11.Ne5 (11.cd5 Nd5 12.Nfd2 Nd2 13.Nd2 a6 14.Qc2 Nb4 15.Qc3 Qh4 16.f4 Nd5=) 11...Rc8? (better is 11...dc4 12.Nc4 Be7= 13.f3 Nd6 14.Nbd2 a6 15.e4 ab5 16.Nd6 Qd6=) 12.f3+– Ng5 13.h4 Nd7 (13...Nge4 14.fe4 Ne4 15.cd5 Bd5 16.Qe1+–) 14.hg5 Qg5 15.f4 Qf6?? (15...Qe7+–) 16.Nd7 (16.Nd7 Qh6 17.Nf8 Bf8 18.a5+–) 1–0. BlackDemon (2615) – Mempawah (1785), FICS rated standard game, 2013.

7.a4 Bd6 8.c4 Nc5 9.0–0 0–0 10.cd5 A) 10...Nd5 11.Qc2 (11.a5 ba5 12.d4 Ne4 13.Ra5 c6 14.Ra2 cb5 15.Bb5 a6 16.Bc4 Nb4+=) 11...a5 12.Rc1 Nb4 13.Qc3 f6 14.d4 Ne4 15.Qb3 Qd7 16.Bc4 Rae8=; B) 10...Bd5 11.Nd4 (11.Nc3 c6 12.Nd5 cd5 13.Rc1 Rc8 14.d3 Ng4 15.h3 Nh6 16.Be5 f6=) 11...e5 12.Nc6 Bc6 13.bc6 e4 14.f3 Nd3 15.Bc3 Nd5 16.fe4 Qh4=.

7.a4 Bd6 8.c4 Nc5 9.0–0 0–0 10.Ne5 A) 10...Be5 11.Be5 (11.d4 Na4 12.Qa4 Bd6 13.Nc3 a5 14.Rfc1 dc4 15.Bc4 Qd7 16.Ba3 Rfc8+=) 11...dc4 12.Bc4 a6 13.Nc3 ab5 14.Nb5 c6 15.Nd6 Ba6 16.Ba6 Na6+=; B) 10...a6 11.d4 (11.Nc6 Bc6 12.bc6 Be7 13.d4 Nce4 14.Nd2 Nd2 15.Qd2 dc4 16.Bc4 Qe8=) 11...Ncd7 12.Qc2 ab5 13.cb5 Ne4 14.f3 Nef6 15.Bd3 Ra5 16.Bc3 Ra7=.

7.a4 Bd6 8.c4 Nc5 9.0–0 0–0 10.Bf6 A) 10...gf6 11.Nc3 (11.a5 dc4 12.Bc4 ba5 13.d4 Nd7 14.Bd3 Bb4 15.Qc2 f5 16.Rc1 Rc8=) 11...dc4 12.Bc4 f5 13.d4 Ne4 14.Ne4 fe4 15.Nd2 Qh4 16.g3 Qg5+=; B) 10...Qf6 11.d4 (11.Na3 Ne4 12.cd5 ed5 13.d4 Nc3 14.Qc2 Ne2 15.Qe2 Rfe8 16.Rfc1 a6+=) 11...Ne4 12.cd5 Bd5 13.Bd3 Qh6 14.Ne5 Be5 15.de5 Nc5 16.Qe2 Rfd8+=.

7.c4 a6 =.

7.Bd4 a6 8.ba6 Ba6 9.Ba6 Ra6 10.0–0 Bd6 11.Qe2 Qa8 12.Qb5 0–0 13.Qb2 b5 14.a3 Rb8 15.d3 Re8 (15...c5 16.Bc3=+) 16.Ne5 –/+.

5.Nf3 Bd6

6.c4 c5 7.Be2= dc4 (7...0–0 8.0–0=) 8.Bc4 Bb7 9.0–0 Nbd7 10.d4 0–0 11.Nbd2 Qc7 (11...a6 12.ba6 Ba6 13.Qe2=) 12.h3 (12.dc5 bc5 13.Qc2 a6=) 12...Rac8 (12...a6 13.dc5 Bc5 14.Qe2=) 13.Rc1= Rfe8 14.a4 (14.dc5 Nc5 15.Bf6 gf6+=) 14...Ne4 (14...Qd8 15.Nb3=) 15.Be2 (15.Ne4 Be4 16.Nd2 Bb7=) 15...Qb8 (15...Red8 16.Nc4=) 16.Ne4 Be4 17.Nd2 Bb7 18.Bf3 (18.Nc4 Bd5=) 18...Bf3 19.Nf3 ½–½. Rongen – van den Heuvel, Amsterdam, 1995.

6.Be2 a6 7.a4 =.

6.Be2 Nbd7 7.c4 0–0 8.0–0 Bb7 (8...a6 9.cd5 Nd5 10.a4=) 9.a4 dc4 10.Bc4 (10.Na3!?+=) 10...Ng4–/+ 11.g3 (better is 11.Re1 Bf3 12.gf3 Nh2 13.f4–/+) 11...Nge5 (better is 11...Bf3!? 12.Qf3 Nh2 13.Kh2 Qh4 14.Kg2 Qc4–/+) 12.Ne5= Ne5 13.Be2 (13.Be5 Be5 14.d4 Bd6=) 13...f5 (13...c5!?+=) 14.d4 (14.Be5 Be5 15.d4 Qd5=) 14...Ng6 (14...Nf7 15.Bf3 Bf3 16.Qf3=) 15.Bf3 (15.Bc4 Qd7=) 15...Bf3 16.Qf3 Qg5 17.Qg2 (17.Nc3 a6=) 17...Rae8 (17...a6 18.Nc3=) 18.Nd2 Ne7 (18...a5 19.Nc4+=) 19.Nc4+= Nc8 (19...Nd5 20.Ba3 Rd8 21.f4=) 20.Rac1 (20.Rfc1 Rd8+=) 20...Rf7 (20...Ne7 21.Ba3 Ba3 22.Na3+=) 21.Rc2 (21.Qc6 Rd8+/–) 21...Rd7 (21...Ne7 22.f4 Qg6 23.Qb7+=) 22.Rfc1+/– Qd8 (22...Ne7 23.Qb7 Rdd8 24.Nd6 cd6 25.Qa7+=) 23.Qa8 c5 (23...Qe7 24.Nd6 Qd6 25.Qb7+/–) 24.Nd6 Rd6 25.Qf3 (25.dc5 Rd1 26.Kg2 Rc1 27.Rc1 Qe7+–) 25...Rd5 26.dc5 (26.Ba3+/–) 26...Ne7 (26...bc5!? 27.Rc5 Rc5 28.Rc5 Nb6+/–) 27.cb6 (27.c6 Qc7+–) 27...ab6+/– 28.Rc7 (better is 28.e4 Rd3 29.Qe2+/–) 28...Rd7? (better is 28...e5+/–) 29.Qb7+– Rc7 30.Rc7 Kf8 (30...Qd6 31.Bd4 e5+–) 31.Rd7 (31.Rd7 Qa8 32.Re7 Qb7 33.Rb7+–) 1–0. Mergel,Hans Werner – Kerstingl, 1979.

6.Be5 0–0 =.

6.g3 Bb7 7.Bg2 (7.Be5 Be5 8.Ne5 d4 9.Rg1 c5 10.c3 0–0 11.cd4 cd4 12.Qa4 de3 13.de3 a6 14.Nd2+=) 7...Qd7 (7...a6 8.a4 (8.Nc3= 0–0 9.a4 c6 10.0–0 e5 11.Ng5 h6 12.Nh3 Re8 13.bc6 Bc6 14.d4+=) 8...0–0 9.0–0 c6 10.Nd4 e5 11.Nf5 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Nd6=; 7...0–0 8.a4 (8.0–0 a6 9.a4 c6 10.Nd4 ab5 11.ab5 Ra1 12.Ba1 c5 13.Nf3 Nbd7 14.d3+=) 8...a6 9.0–0 c6 10.Nd4 e5 11.Nf5 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Nd6=) 8.a4 (8.Bf6 gf6 A) 9.a4 c5+= (9...a6 10.Nc3 Rg8 11.Rb1 Qd8 12.Nd4 c5 13.ba6 Ba6 14.Ndb5=) 10.Nc3 Rg8 11.a5 ba5 12.Ra5 a6 13.ba6 Nc6 14.Ra2=; B) 9.Nc3 a6 10.a4 Rg8 11.Rb1 Qd8 12.Nd4 c5 13.ba6 Ba6 14.Ndb5=) 8...0–0 (8...Qe7 9.a5= (9.0–0 a6 10.Nd4 0–0 11.Qf3 Nbd7 12.d3 ab5 13.ab5 Ne5 14.Qe2+=) 9...ba5 10.Ra5 0–0 11.Nc3 a6 12.0–0 Nbd7 13.Qe2 ab5 14.Ra8=) 9.d4 (9.Bf6 gf6 10.Nc3 c5 11.h3 a6 12.ba6 Na6 13.Nb5 Be7 14.d4=). Spiegel,M – Scott, corr SOK–88–21, 1988.

6.c4 a6

7.Qc2 ab5 8.cb5 Bb7 9.Be2 (9.Bd3 c5=) 9...Nbd7 (9...0–0 10.0–0+=) 10.0–0 0–0 11.Rc1 Rc8 12.Nd4 Nc5 13.Nc6 (13.a4 Ra8=) 13...Bc6 14.bc6 Ra8 15.d4 Na6 16.Nd2 h6 17.a4 (17.Qd1 Re8=) 17...Bb4 (17...Nb4 18.Qb3=) 18.Ba3 (18.Rcb1 Qe7=) 18...Ba3 (18...Qd6 19.Bb4 Nb4 20.Qc3=) 19.Ra3 Qd6 20.Qb3 (20.Qc3 Nb4=) 20...Qb4 (20...Nb4 21.Bb5=) 21.Qb4+= Nb4 22.Bb5 Nh7? (better is 22...Ne4 23.Ne4 de4+=) 23.Rb1+– Na6 24.a5 Nb8 25.a6 The passed pawn on a6 will become decisive later 25...Ra7 26.Nf3 f6 27.Re1 (27.Kf1 Kf7+–) 27...Rd8 (better is 27...Kf7+/–) 28.e4 (better is 28.Kf1+–) 28...de4= 29.Re4 Kf7 30.Re1+/– Rd6 31.Rc3 Nf8 32.Rd1 Ng6 33.g3 Ne7 34.Rdc1 Nd5 35.Rc4 Ne7 36.Kf1 Rd5–/+ 37.Rb4 Rd6?? 38.Ke2 Nbc6 39.Rbc4+/– Na5 40.Rc7+– Rc7 41.Rc7 Rd8 42.Nd2 Rc8? 43.Rc8 Nc8+/– 44.Nc4 Nc4 45.Bc4 Na7 46.f4 g6 47.g4 Ke7 48.Kf3 Kd6 49.h4 g5 50.h5 e5?? 51.fe5?? fe5+= 52.d5 b5 53.Bb3 b4 54.Ke4 Nb5 55.Bc4 Na7 56.Kf5 Nc8 57.Kg6 e4 58.Kh6 e3 59.Kg5 b3 60.Kf4 e2 61.Be2+– (61.Be2 Ne7 62.a7 Nd5 63.Kf5+–) 1–0. Ringsborg,Allan – Hansen,Erik Friberg, Politiken Cup, 2004.

7.Qc2 Bd7 8.Nc3 =.

7.Be5 =+.

6.c4 Bb7

7.cd5 ed5 8.Nd4 Bc8 =.

7.cd5 Bd5 8.Nc3 Bb7 9.Bc4 (9.d4 a6=) 9...0–0 (9...a6 10.0–0=) 10.0–0 Nbd7 (10...a6 11.d3=) 11.d4 Re8 (11...a6 12.a4=) 12.Qe2 Bf8 (12...c6!?=) 13.Ne5+= Ne5 (13...Bd6 14.Rfd1+=) 14.de5 Opening the d–file gets White a lot of play 14...Nd5 (14...Nd7 15.Rad1+=) 15.Nd5 Bd5 16.Rfd1 Bc4 17.Qc4 Qe7 18.Rac1 Attacking the backward pawn on c7 18...Rec8 19.a4 Qb4 (19...Qe8 20.Qc6 Qc6 21.Rc6+/–) 20.Qc2 (20.Qb4!? Bb4 21.Rd7+/–) 20...a6 (20...c6 21.bc6 Bc5 22.Bd4 Rc6 23.Rb1+=) 21.Rd4+= Qe7 22.Qc6 ab5 23.ab5 Ra2 24.Rd7 The pressure on the backward pawn c7 grows 24...Qb4 (24...Qh4 25.g3 Qh5 26.Bd4+=) 25.Bd4+/– Qd2 26.Rf1 Qe2 27.Qb7 Raa8 28.Rc7 Qb5?? 29.Rf7 Qa6 30.Bb6 Qb5?? 31.Bd4+– Qe2 32.Rf3 (32.Rf3 Qc4 33.Qf7 Kh8 34.Rf4+–; 32.Rc7 Rc7 33.Qc7 Qg4+–) 1–0. Grott,Peter – Peetoom,Frank, DESC, 2000.

7.Be2 dc4 8.Na3 =.

7.Be2 Nbd7 8.0–0 0–0 9.Qc2 (9.cd5 Nd5 10.d4 a6=+) 9...Re8 (9...a6 10.cd5 Nd5 11.a4=+) 10.a4 (10.cd5 ed5 11.Ba3 Nb8=) 10...a5 11.Nc3 (11.d4 dc4 12.Nbd2 Bd5=) 11...Bb4 (11...dc4 12.h3=+) 12.d3 (12.cd5 ed5 13.Rac1 Rc8+=) 12...Nc5 (12...dc4 13.Rad1=) 13.Na2 (13.cd5 Nd5 14.Na2 Nd7+/–) 13...Qd6 (13...dc4!? 14.Nb4 ab4 15.Qc4 Na4=) 14.Be5 Qe7 15.d4 Nce4 16.cd5 Bd6 17.de6 Qe6 18.Bc4 Bd5 (18...Qg4 19.h3 Qg6 20.Bd3+/–) 19.Bd5 Qd5 20.h3 (20.Rac1 Ba3 21.Rcd1 Bd6+/–) 20...Rac8 21.Rfd1 (21.Nc3 Nc3 22.Qc3 Nd7+/–) 21...c5 (21...c6 22.Rac1 Ba3 23.bc6 Bc1 24.Rc1+=) 22.Bd6 (22.dc5 Qc5 23.Qc5 A) 23...Rc5 24.Bd6 (24.Rd6?! Nd6 25.Bd6 Rc4+–) 24...Rc2 25.Nd4+–; B) 23...Bc5+/–) 22...Qd6+= 23.dc5 Qc5 (23...Rc5 24.Qd3 Qd3 25.Rd3=+) 24.Qc5+/– Rc5 25.Nd4 Rc4 26.Rdc1 Ra4= 27.Rc2 Nc5 28.Rac1 g6 29.Nc3 Rc4? 30.Nd5!+– Nd5 31.Rc4 a4 32.Nc2 Ra8 33.Na3 Nc7 34.Rc5 bc5+/– 35.Rc5 Ne6 36.Rc6 Kf8 37.b6 (37...Rb8 38.Kf1+/–) 1–0. Sternik,Ryszard – Blazynski,Jerzy, Olsztyn, 1990.

6.c4 dc4

7.Nc3 0–0 8.Bc4 Bb7 9.0–0 Nbd7 10.a4 c6 11.bc6 Bc6 12.Nb5 Bb5 13.ab5 Bc5 14.d4 Be7 15.Rc1 Ne4 16.Qb3 Bf6? (better is 16...Ndf6+/–) 17.Be6!+– fe6 18.Qe6 Kh8 19.Qe4 Nc5 20.dc5 Bb2 21.Rc2 Ba3 22.c6 Bc5 23.Rd2 Qc7 (23...Qf6+–) 24.Ng5 g6 25.Rd7 Qc8 26.Rh7 Kg8 27.Qg6 mate 1–0. Rooijen Van,Peter (1610) – Lombardi,Donato, 52. LSS No Engine Cup Preliminary, 2011.

7.Bc4 0–0 8.0–0 Bb7 9.d3 Nbd7 10.Nbd2 Nc5 11.e4 Nh5 12.e5 Be7 13.d4 Nd7 14.Qc2 f5?? (better is 14...Nf4=) 15.Be6+– Kh8 16.Bf5 Nf4 (16...a6 17.a4+–) 17.Bh7 Bf3 (17...a6 18.Be4 Nd5 19.Qb3+–) 18.Nf3 (18...a6 19.Be4+–; < 18.gf3 Ba3 19.Kh1 Bb2 20.Qb2 Kh7 21.Qc2 Kh8=+) 1–0. orane (2175) – smiley, Live Game Caissa's Web, 2004.

7.Bc4 0–0 8.0–0 Re8 9.d4 Nbd7 10.a4 e5 11.Ng5 Re7 12.de5 Be5 13.Be5 Bb7 14.Bf6 gf6 15.Nh3 Ne5 16.Be2 Rd7 17.Qb3 Bd5 18.Qc2 Qe7 19.Nc3 Nc4 20.Nd5 Qc5 21.Nf6 Kg7 22.Nd7 Qd5 23.Qh7 Kh7 24.Nf6 Kg7 25.Nd5 Nd2 26.Rfd1 1–0. Trkn – apsuk, itsyourturn.com, 2000.

7.Bc4 h6 8.0–0 0–0 9.d4 Bb7 10.a4 Nbd7 11.Nbd2 Nd5 12.e4 Ne7 (12...Nf4 13.g3 Nh3 14.Kg2+=) 13.Qb3+/– a5? (13...Ng6 14.g3+/–) 14.Qe3?? (better is 14.ba6 Ba6 15.e5+–) 14...Bb4 15.Rfc1 Ng6 16.Bd3 Rc8 17.Nc4 Ne7 18.Nce5 Bd6 19.Nc6 Bc6 20.bc6 Nb8 (20...Nf6 21.h3+/–) 21.d5 (21.Bb5 Bb4+–) 21...ed5 (21...Bc5!? 22.Qe1 Bb4+/–) 22.ed5 Nd5? (22...Bc5 23.Qe4 f5+–) 23.Qe4 g6 24.Qd4 (24.Qd5?? Bh2 25.Kh2 Qd5–+) 24...f6 (24...Nf6 25.Qf6 Qf6 26.Bf6 Rfe8+–) 25.Qd5 Kg7 (25...Kh7 26.Qb3 Qe7 27.Qc2+–) 26.Qc4 Qe8 (26...Bc5 27.Rd1 Qe8 28.Nh4+–) 27.Nh4 g5 28.Qg4 (better is 28.Nf5!? Kh8 29.Nd6 cd6+–) 28...Be5 29.Qf5 Rh8 30.Ng6 Rg8 (30...Bb2 31.Nh8 Qh8+–) 31.Ne5 Na6 (31...Rd8 32.Qh7 Kf8 33.Ba3 Rd6 34.Bd6 cd6 35.c7 Rg7 36.Qh8 Ke7 37.Qe8 Ke8 38.c8Q Ke7 39.Rc7 Nd7 40.Qd7 Kf8 41.Rc8) 32.Qh7 (32.Nd7 Qe4 33.Qe4 Kf7 34.Bc4 Kg7 35.Bf6) 32...Kf8 33.Nd7 Qd7 34.cd7 Rd8 35.Bf6 Ra8 (35...Rd7 36.Qd7 Rg6 37.Bg6 Nc5 38.Qf7) 36.Qe7 1–0. pumpkin – pillsbury (2185), net–chess.com, 2015.

6.Be2 0–0

7.0–0 a6 8.a4 c5 (8...Bb7 9.Na3=) 9.c4 (9.Na3 Nbd7=) 9...Nbd7 (9...Bb7 10.Na3=) 10.d4 (10.Nc3 Qe7=) 10...Qc7 (10...Bb7 11.Na3=) 11.Nbd2 (11.dc5 Bc5 12.cd5 Nd5=) 11...Bb7 (11...cd4 12.ed4 ab5 13.cb5=) 12.g3 (12.dc5!? bc5 13.Qc2=) 12...ab5+= 13.ab5 (13.dc5 bc5 14.ab5 Ra1 15.Ba1 Ra8+=) 13...Ra1 14.Ba1 Ne4 (14...Rc8 15.cd5 Bd5 16.dc5 Qc5 17.Qb1+=) 15.Ne4 (15.cd5 Bd5 16.Ne4 Be4=) 15...de4 16.Nd2 cd4 17.Bd4 (17.ed4 Ra8+=) 17...e5 18.Bb2 (18.Bc3 f5+=) 18...f5 19.Qc2 Nf6 (19...Nc5 20.Ra1+=) 20.f4 (20.Rd1 Rd8+=) 20...ef4–/+ 21.gf4 Bc5 22.Qb3 (22.Bd4–/+) 22...Nd7 (22...Rd8 23.Nb1 Rd3 24.Bd3 Be3 25.Kg2 ed3 26.Kh3 Qf7 27.Qd1 Qg6 28.Rg1 Bg1 29.Bd4 Qg2 30.Kh4 g5 31.fg5 Qh2) 23.Qc3= Threatening mate... how? 23...Rf6 24.Nb3 Be7 25.Rf2 Rg6 26.Rg2 Bf6 27.Qc2 Qd6 28.Nd4 Rg2+= 29.Kg2 g6 30.Nb3?? g5?? 31.Bf6 Qf6 32.c5+= bc5 33.Nc5 Nc5 34.Qc5 gf4 35.ef4 e3= 36.Kh3 Qh6 37.Kg3 Qg6 38.Kh4 Qf6 39.Kg3 Qg7 40.Kh4 ½–½. Schwichtenberg,Juergen (1910) – Mueller,Waldemar (2115), VII Camp. europeo senior, 2007.

7.0–0 Bb7

8.d4 Re8 9.Ba3 A) 9...c5 10.bc6 (10.dc5 bc5 11.Bb2 e5 12.Nbd2 Qc7 13.Nh4 Bc8 14.c4 d4 15.Qc2 e4+=) 10...Nc6 11.Bd6 Qd6 12.Nc3 a6 13.Na4 Nd7 14.Rb1 b5 15.Nb2 Rac8=; B) 9...a6 10.Bd6 (10.Bd3 ab5 11.Bd6 Qd6 12.Bb5 c6 13.Bd3 Nbd7 14.Nbd2 c5 15.c4 cd4+=) 10...Qd6 11.Nc3 c6 12.a4 Rc8 13.Na2 cb5 14.ab5 ab5 15.Qb1 Ra5=.

8.d4 Re8 9.a4 A) 9...c6 10.Ba3 (10.Qd3 a6 11.Nbd2 Qc7 12.Ba3 c5 13.dc5 bc5 14.Rfb1 ab5 15.ab5 Nbd7=) 10...a6 11.Bd6 Qd6 12.bc6 Nc6 13.Nbd2 Rac8 14.Rb1 Ne4 15.Ne4 de4=; B) 9...a6 10.Qd3 (10.Ne5 c6 11.c4 dc4 12.Nc4 Bc7 13.Ne5 ab5 14.ab5 Ra1 15.Ba1 cb5=) 10...ab5 11.ab5 Ra1 12.Ba1 c6 13.Na3 Qc7 14.Bb2 Nbd7 15.bc6 Bc6=.

8.d4 Re8 9.Nbd2 a6 (9...c6 10.c4 (10.Ne5 a6 11.c4 ab5 12.cb5 Qc7 13.Ndf3 Ne4 14.Qb1 Rc8 15.Rc1 c5=) 10...cb5 11.cb5 a6 12.Ne5 Nbd7 13.a4 Qb8 14.Ndf3 Rc8 15.Bd3 ab5=) 10.a4 (10.c4 ab5 11.cb5 c6 12.Ne5 Qc7 13.Ndf3 Ne4 14.bc6 Nc6 15.Bb5 f6+=) 10...ab5 (10...c6 11.c4 cb5 12.ab5 ab5 13.Ra8 Ba8 14.cb5 Bb7 15.Qb3 Ne4=) 11.ab5 Ra1 12.Ba1 (12.Qa1 c6 13.bc6 Nc6 14.Ba3 Ne4 15.Bd6 Qd6=) 12...Nbd7 (12...c6 13.Qb1 cb5 14.Bb5 Bc6 15.c4 Qc7=) 13.c4 Qa8 (13...Qe7 14.Ne5 Ra8 15.Nc6 Bc6=) 14.Bc3 Qa7 (14...c5 15.bc6 Bc6=) 15.Qa1 (15.Qc2 c6+=) 15...Ra8 16.Qa7 Ra7 17.Ra1 Ra1 18.Ba1 dc4 19.Nc4 Bb4 20.Nfe5 Kf8 21.Kf1 Ke7 22.Bd3 g6 23.f3 Ne5 24.Ne5 Nd7 25.Nd7 ½–½. Hal1958 – Mrchess, playchess.de, 2005.

8.d4 Re8 9.Qd3 A) 9...c6 10.a4 (10.Na3 a6 11.bc6 Nc6 12.c4 Na5 13.Ne5 Rc8 14.Rac1 dc4 15.Nac4 Be4=) 10...a6 11.Nbd2 Nbd7 12.bc6 Bc6 13.Rfb1 Qc7 14.Ba3 Ba3 15.Ra3 Rec8=; B) 9...a6 10.a4 (10.Na3 Nbd7 11.Rfc1 Ba3 12.Ba3 ab5 13.Qb3 Ba6 14.Bb2 c6 15.Rcb1 Ne4+=) 10...ab5 11.ab5 Ra1 12.Ba1 c6 13.Na3 Qc7 14.Bb2 Nbd7 15.bc6 Bc6=.

8.d4 Re8 9.Bd3 A) 9...a6 10.a4 (10.Ba3 ab5 11.Bd6 Qd6 12.Bb5 c6 13.Bd3 Ba6 14.Qe2 Bd3 15.Qd3 Nbd7+=) 10...ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 Qe7 14.Ne5 Ra8 15.Qf3 Bb4=; B) 9...c6 10.Ba3 (10.a4 a6 11.Ba3 c5 12.dc5 bc5 13.Nbd2 e5 14.Ng5 e4 15.Be2 Qc7–/+) 10...a6 11.Bd6 Qd6 12.bc6 Nc6 13.a3 Rec8 14.Nbd2 Qc7 15.Nb3 Ra7=.

8.Be5 a6 =.

8.Ne5 a6 9.a4 +=.

8.Ne5 Nbd7 9.f4 a6 10.a4 ab5 (10...Qe7 11.Bd4=) 11.ab5 Qe7 12.Nc6 (12.Ra8 Ra8 13.Bd4 Bc5=) 12...Qe8 (12...Bc6 13.bc6 Ra1 14.Ba1=) 13.Ra8 Qa8 14.Ne5 Rd8 (14...d4 15.Bd4 Bg2 16.Rf2=) 15.d4 (15.Bh5 Rf8+=) 15...c6 (15...c5 16.bc6 Bc6 17.Qd3=) 16.bc6 Bc6 17.Nc3 (17.Qd3 Rc8=) 17...Ne4 (17...Bb4 18.Bd3=) 18.Ne4+= de4 19.Nc4 (19.Qe1 Ba4 20.c4 f6 21.Nd7 Bd7+=) 19...Bc7 (19...Bb4 20.c3 Be7 21.Ne5=) 20.Qd2 Qb7 (20...b5 21.Ra1 Qb8 22.Na5=) 21.Qb4+= Nf6 22.Ra1 (22.Ne5 Bd6 23.Qb3 Ra8 24.Nc6 Qc6+=) 22...Nd5= 23.Qb3 Ra8 24.Ra8 (24.Ne5 Ra1 25.Ba1 Qa8 26.Nc6 Qa1 (worse is 26...Qc6 27.Bb2+=) 27.Kf2 Bf4 28.ef4 e3 29.Kf3 Qe1 30.Ne7 Ne7 31.Qe3 Nf5–/+) 24...Qa8 25.Kf2 Qd8 26.g3 Qe8 27.Ba3 Ba4+= 28.Qb2 Qc6 29.Bf1 f6 30.Be2 b5 31.Nd2 Nc3 32.Qb4 Threatening mate: Qf8 32...h6 33.Qf8= Kh7 34.Qf7 Bd6+/– 35.Bd6 Qd6 36.Bh5 Do you see the mate threat? 36...b4 37.Nc4 Qd8= 38.Bg6 Kh8 39.Qe6 The passed pawn on d4 will quickly become a dangerous weapon 39...Qg8 40.f5 Bc2+= 41.Nd6 The mate threat is Nf7 41...Qf8? 42.Nf7+– Kg8 43.Nh6 Kh8 44.Nf7 Kg8 45.Ke1 b3 46.Nd6 Kh8+/– 47.Nc4 Nd1 48.Qb6 Nc3 49.Qb7 Na4 50.Kd2 Qd8 51.Kc1 Nc3 52.Nd6 Threatening mate: Nf7 52...Qf8 53.Kd2 Na2 54.h4 Kg8 55.h5 (55.h5 Nc3 56.h6 Bd3 57.h7 Kh8 58.Nf7 Qf7 59.Qc8 Qe8 60.Qe8#; 55.Ne4?! Qb4 56.Qb4 Nb4+/–) 1–0. Diepstraten,Leonardus CM – Klein, corr Belgium, 1985.

6.Be2 Bb7

7.0–0 c5 8.c4 Qc7 9.g3 (9.cd5 Nd5 10.e4 Nf4=) 9...h6 (9...e5 10.d4 cd4 11.ed4=) 10.d3 (10.Bf6 gf6 11.cd5 Bd5=) 10...Nbd7 11.Nbd2 0–0–0 (11...0–0!?+=) 12.Qc2 (12.a4 d4 13.ed4 cd4 14.Nd4 Nc5+/–) 12...e5 13.cd5 Bd5 14.e4 (14.a4 Kb8+=) 14...Bb7 (14...Be6 15.Nc4=) 15.Nc4 (better is 15.a4+/–) 15...Nf8? (better is 15...g5+=) 16.Nd6+– Qd6 17.Ne5 Qe7 18.Bf3 (18.a4!? N8d7 19.f4 Ne5 20.Be5 Kd7+–) 18...Ne6+/– 19.Bg2 Kc7 (19...Nd4 20.Bd4 Rd4 21.Nf3+/–) 20.h4 (20.Qc4!?+–) 20...Nd4 21.Qc4?? (better is 21.Bd4 Rd4 22.f4+/–) 21...Qe5–+ 22.Bc3?? (better is 22.Qf7 Rd7 23.Qb3–+) 22…Ne2 (22...Ne2 23.Kh2 Qc3 24.Qf7 Kb8–+) 0–1. Satka,Martin – Stankiewicz,Andrzej, Brandenburg op Seniors, 2004.

7.0–0 c6 8.c4 dc4 9.Bc4 0–0 10.Nc3 cb5 (10...a6 11.a4=) 11.Bb5 (better is 11.Nb5!? Be7 12.Rc1+=) 11...a6+= 12.Be2 Ng4 (12...b5 13.a3+=) 13.h3 Nf6 14.Qc2 Nc6 15.Ng5 g6 (15...h6 16.Nge4=) 16.Nge4 (16.Nce4 Ne4 17.Ne4 Be7+=) 16...Nb4= 17.Qb3?? (better is 17.Qb1 Ne4 18.Ne4=) 17...Be4 (better is 17...Ne4!? 18.Ne4 Be4 19.a3–+) 18.Ne4 Ne4 19.Bc3 (19.d3 Nf6 20.Bf3–+) 19...Nc3 (19...Nd5 20.Rad1–+) 20.Qc3 a5 21.a3 Na6 (21...Nd5!? 22.Qb3–+) 22.d4 Be7 (22...Nc7 23.e4–+) 23.Qd3 (23.Rfc1 Ra7–+) 23...Nc7 24.Bf3 Rc8 25.Rfb1 b5 (25...Nd5 26.Rb5–+) 26.Bc6 (26.Rc1 b4 27.ab4 Bb4–+) 26...b4 27.ab4 Bb4 28.Ba4 (28.e4 e5! 29.d5 Ne6–+) 28...Nd5 29.Rc1 (29.Bb3 Nc3 30.Re1 Rc7–+) 29...Nc3 30.Rc2 (30.Bb3 Rc7–+) 30...Na4 31.Ra4 (31.Rc8 Qc8 32.Ra4 Qc6–+) 31...e5! 32.Rc8 (32.de5 Qe8 Double attack (32...Qd3 Pinning; 32...Qd3 Deflection; 32...Qe8 Decoy)) 32...Qc8 33.de5 Re8 34.f4 (34.Qb5 Re7–+) 34...Rd8 35.Qe4 (35.Qb3 Rd2 36.Rb4 ab4 37.Qb4 Qc1 38.Kh2–+) 35...Qc1 36.Kh2 Rd1 37.Kg3 (37.Rb4 ab4 38.f5 gf5 39.Qf5 Rh1 40.Kg3 Qe3 41.Kh4 Qh6 42.Kg3 Qg6 43.Qg4 Qg4 44.Kg4 b3–+) 37...Rg1 38.e6 Qe1 39.Kg4 Qf2 40.ef7–+ Kf7 41.Qd5 Kg7 42.Ra2?? h5 0–1. mvb9999 – kinshukb, gameknot.com, 2014.

7.0–0 Nbd7 8.a4 0–0 9.Nd4 Qe7 10.Bf3 (10.a5 ba5 11.Nb3 c5=) 10...Rab8 (10...Ne5 11.Nc3+=) 11.d3 h6 (11...Ne5 12.Be2=) 12.Nd2 Nc5 13.N2b3 Nb3 14.Nb3 c6 15.d4 (15.bc6!? Bc6 16.Nd4=) 15...Rfc8+= 16.Rc1 c5 (16...cb5 17.ab5 a5 18.Nd2+=) 17.c3 (17.dc5!? bc5 18.c4=) 17...c4–/+ 18.Nd2 Rf8 19.Ra1 Rfe8 20.Qc1 Qc7 21.Ba3 (better is 21.h3!?=) 21...Bh2–/+ 22.Kh1 Bd6 23.Bd6 Qd6 24.g3 g5 25.Bg2 Ne4 (25...a5!?–/+) 26.Be4= de4 27.Nc4 Qd7 28.Ne5 Qe7 29.Kg2 f6 30.Nc4 Qc7 31.Nd2 Rbc8 32.Nb1 Red8 33.Qd2 Re8 34.Qe2 a6 (better is 34...Kg7!?=) 35.ba6+/– Ba8 (35...Bc6 36.Na3+/–) 36.Rc1 e5 37.Nd2 Re6 38.Qd1 Rc6 39.Nb1 (39.d5 Rc5 40.c4 Bd5+/–) 39...Qa7 (39...ed4 40.ed4 Rd6 41.Kg1=) 40.Qe2 (40.de5 Qa6 41.Qd5 Kh8+/–) 40...ed4+= 41.ed4 Rc4 42.Kg1 (42.a5 Rd4 (worse is 42...Qa6 43.Na3 e3 44.f3+/–) 43.cd4 Rc1+=) 42...Bd5 (42...Rd4 43.Nd2 Rd6 44.Ne4+=) 43.Qe3 (better is 43.a5!? Qa6 44.Nd2 ba5 45.Nc4 Rc4 46.Qh5+/–) 43...Qa6+= Attacking the isolated pawn on a4 44.Nd2 R4c7 (better is 44...Ra4!? 45.Ra4 Qa4 46.Ne4 Qc6=) 45.Ne4+/– Kg7? (better is 45...Be4!? 46.Qe4 Kg7+/–) 46.Nf6! Kf6 47.Qe5 Kg6 48.Qd5 Rc3?? (48...Kg7 49.Qe5 Kf7 50.d5+–) 49.Re1 Rf8 50.Re6 Kh5 51.Qh1 Kg4 52.Qh6 Rg3 53.fg3 Qd3 54.Qf8 Qd4 55.Kg2 Qd5 56.Kf2 Qe6 57.Qb4 Kh5 58.Rh1 Kg6 59.Qb1 Kf6 60.Rh6 1–0. Valpa – Grunert, playchess.de, 2005.

5.Nf3 Be7

6.c4 a6 7.Bf6 Bf6 8.d4 =.

6.c4 Bb7 7.Nc3 0–0 8.a4 a5 9.Be2 (9.cd5 Nd5 10.Bc4 Nd7 11.0–0 Nc5 12.Nd5 ed5 13.Be2; 9.d4 c5 10.cd5 Nd5 11.dc5 Bc5 12.Bc4 Nb4 13.Qe2) 9...Nbd7 (9...c5 10.bc6 Nc6 11.0–0 Rc8 12.cd5 Nd5 13.Rc1) 10.0–0 (10.Qc2 dc4 11.Bc4 Bb4 12.0–0 h6 13.Be2) 10...Nc5 (10...dc4 11.Bc4 Bf3 12.gf3 Ne5 13.Be2) 11.d4 (11.Qc2 Nfe4 12.cd5 Nc3 13.Bc3) 11...Nce4 12.Ne4 de4 (12...Ne4 13.Qc2= 0.07 (13.Ne5=)) 13.Nd2 (13.Ne5 Nd7+=) 13...Rc8 14.Nb3 (14.Bc3 c6=) 14...c6 (14...Bb4!?=) 15.Qc2+= c5? (15...cb5 16.ab5 Nd7 17.Rfc1+=) 16.Rfd1 (better is 16.dc5 Rc5 17.Nc5 Bc5 18.Rfd1+–) 16...cd4+= 17.Bd4 Qe8?? (better is 17...Qc7+=) 18.Qb2 (better is 18.Bb6!? Bd5+–) 18...Bd8 19.Rac1 Qe7 20.Rc2 (better is 20.c5!? Bd5 21.cb6 Rc1 22.Rc1+– (22.Nc1?! Qb7+/–)) 20...Re8+/– 21.Qa1 (21.Rcd2!?+/–) 21...e5+= 22.Bb2 Qe6 23.h3 h5 24.Rcd2 Bc7 25.Ba3 h4 (25...Rcd8 26.Rd8 Rd8 27.Rd8 Bd8 28.Qc3+/–) 26.Qb2+/– Rcd8 27.c5 Rd2 28.Rd2 Bd5 29.Bd1 Rd8 30.cb6 Bb6 31.Nc5 Qf5 32.Nb3 Rc8?? 33.Rc2 Bc4 34.Qc3 Nd5 35.Qb2?? Ne3!–+ 36.Rc1 Nd1 37.Rd1 e3 38.fe3 Be3 39.Kh1 Bb3 40.Qb3–+ Bd4?? 41.b6= Rb8 42.b7 Qd7 43.Rb1 e4 44.Qb5 Qe6 45.Qa5 Kh7?? 46.Qb4 Qd7? 47.a5 e3 48.a6 e2 49.Qd6 Qe8 50.Bb4 Rd8?? 51.Qe7 Qe7?? 52.Be7 +–. Hakim,Viktor – Niegemeier,Karl Leo, Bois Gentil op, 1994.

6.d4 a6 7.Ba3 =.

6.d4 Nbd7 7.Bd3 Bb7 8.0–0 0–0 9.Re1 Ne4 10.Nbd2 f5 (10...c5 11.c4=) 11.c4 Ndf6 12.Ne5 Ng4 (better is 12...Bb4!? 13.Bc1 a6 14.ba6 Ba6=) 13.Ng4+/– fg4 (better is 13...Nd2 14.Qd2 fg4+/–) 14.Qg4?? (better is 14.Be4 de4 15.Qg4+–) 14...Nf2 15.Qe2 Nd3 16.Qd3 Rf6 17.Rf1 Kh8 18.Nf3 dc4 19.Qc4 Bf3 20.Rf3 Rf3 21.gf3 Qd7 22.Kf2 Rc8 23.Rg1 1–0. gtate (1900) – ciortan (2160), net–chess.com, 2004.

6.Be2 a6 =.

6.Ne5 a6 =.

6.c4 0–0

7.d4 a6 8.a4 Bb7 9.Be2 Ne4 10.0–0 dc4 11.Bc4 Bb4 12.Qc2 Ng5 13.Ne5 Bd6 14.Ba3 Be5 15.de5 Nf3 16.Kh1 Qh4 17.h3 Ne1 18.Re1 Qh3 0–1. Madonia – Poretti, corr Italy 1984.

7.Be2 Bb7 (--> 5.c4 Bb7 6.Nf3 Be7 7.Be2 0–0).

6.c4 dc4

7.a4 0–0 8.Na3 (8.Bc4 a6=) 8...Bb7 9.Nc4 (9.Bc4 a6=) 9...Nbd7 (9...a6 10.Be2=+) 10.Be2= Nc5 (10...a6 11.0–0=) 11.d4 (11.0–0 a6=) 11...Nce4 12.0–0 Nd5 (12...a6 13.Nfe5=) 13.Qb3 a6 14.Nfe5 ab5 15.ab5 Ndf6 (15...Qe8 16.Ra8 Ba8 17.Ra1+=) 16.f3 Nd6 17.Ra8 Ba8 18.e4 Nc4 19.Bc4 Kh8 (19...Nd7 20.Nc6 Bc6 21.bc6+/–) 20.Ra1 Qe8 21.Ra7 Bd6 (21...Qb8 22.Ra4+/–) 22.Qa4+– Be5 (better is 22...Kg8!?+–) 23.de5 Nd7 24.Rc7 (24...Qd8 25.Qa7+–) 1–0. Kilpatrick,Robert – Harvey,Donald J, corr SCCA cand, 1987.

7.Bc4 0–0 8.0–0 Bb7 9.a4 a5 (9...c6 10.d3=) 10.Nc3 Bb4 11.d4 Bc3 12.Bc3 Ne4 13.Bb2 Nd7 14.Qe2 Ndf6 15.Ba3 Re8 16.Ne5 Nd6 (16...Nd7 17.Rac1+/–) 17.Bd3+/– Nfe4 (17...Be4 18.Rac1+/–) 18.Qc2 f5 19.Rac1 Rc8 20.f3 Nf6 21.Qd2 Nd5 22.e4 fe4 23.fe4 Nf6 24.Qe3 (24.Bd6 cd6 25.Rc8 Qc8 26.Nc4+/–) 24...Re7 (better is 24...Be4!? 25.Rf6 Bd3+=) 25.Rf4+– Nd7 (25...Nh5 26.Rh4 Nf6 27.Nc4+–) 26.Nc6 Bc6 27.bc6 Nf6 28.e5 Nd5 29.ed6 Ne3 (29...cd6 30.Qg3 Nf4 31.Qf4 g6 32.Qd6 Rf7+–) 30.de7 Qe7 (30...Qe8 31.Re1 Nd5 32.Rf8 Qf8 33.ef8Q Rf8 34.Bf8 Kf8 35.Bh7+–) 31.Be7 1–0. Janek – Vesely, internet, 2016.

7.Bc4 0–0 8.0–0 Bb7 9.d4 Nbd7 10.Nbd2 Ne4 11.Ne4 Be4 12.Bd3 Bf3 13.Qf3 Nf6 14.e4 h6 15.Rfd1 Nh7 16.e5 Ng5 17.Qe2 Rc8?! (17...f5+–) 18.h4 Nh7 19.Qc2 g6 20.h5! Kg7 (20...gh5 21.Bh7 Pinning (21.Bh7 Deflection)) 21.Be4 c5 22.bc6 Qc7 23.d5 Ng5 (23...ed5 24.Bd5 Ng5+–) 24.d6 (24.d6 Qd8 25.c7 Rc7 26.dc7+–) 1–0. b4_player – story, casual, 2013.

6.Be2 0–0

7.0–0 a6 8.a4 Bb7 (8...c5 9.ba6 Ba6 10.d3=) 9.c4 (9.a5 ba5 10.Ra5 c6 11.bc6 Qa5 12.cb7 Ra7–/+) 9...Nbd7 (9...dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1=) 10.d4 Ne4 (10...dc4 11.Bc4 c6 12.bc6 Bc6 13.Qe2=) 11.Nbd2 Ndf6 (11...dc4 12.Ne4 Be4 13.Nd2=) 12.Ne5 (12.Ba3 Ba3 13.Ra3 dc4 14.Nc4 Qd5=) 12...Nd2 (12...dc4 13.Ndc4 Bd5 14.Qc2+=) 13.Qd2 dc4 14.f3 (14.Bc4 Bd6 15.Nc6 Qd7=) 14...c3 (14...Bd6 15.Nc4 Nd5 16.Nd6 cd6 17.e4+=) 15.Bc3+= Nd5 16.ba6 (16.e4 Nc3 17.Qc3 Qd6=) 16...Ba6= 17.Ba6 Ra6 18.Nc6 (18.e4 Bg5 19.f4 Nc3 20.Qc3 Bf6+=) 18...Qd7 (18...Qd6 19.Ne7 Qe7 20.a5=) 19.Qd3? (better is 19.Ne7 Qe7 20.e4 Nc3 21.Qc3=+) 19…Qc6–+ (20.Qa6 Qc3–+ (20...Nc3?! 21.a5–+)) 0–1. Kern,Michael – Poretti,Ennio, IECG Cat–M, 1995.

7.0–0 c5 8.Na3 a6 =.

7.0–0 c5 8.a4 a5 9.c4 Bb7 10.d4 cd4 11.Nd4 Nbd7 12.Nc6 Bc6 13.bc6 Nb8 14.cd5 ed5 15.Bb5 Qc7 16.Qc2 Bc5 17.Bf6 gf6 18.Nc3 Nc6 19.Nd5 Qd6 20.Bc6 Qc6 21.Ne7 Be7 22.Qc6 Bc5 23.Qf6 Rae8 24.Rfd1 Re6 25.Qf5 Kh8 26.Rd7 Rg8 27.Qf7 Ree8 28.Qh7# 1–0. Machete99 – Hekla, ICC, 2002.

7.0–0 c5 8.a4 Bb7 9.d4 (9.Nc3 Bd6=) 9...Nbd7 10.Nbd2 cd4 11.ed4 (11.Nd4 Qc7=) 11...Qc7 (11...a6 12.Bd3=) 12.h3 (12.Bd3 a6=) 12...Rac8 Attacks the backward pawn on c2 13.c4 (13.Bd3 Nh5=) 13...dc4+= 14.Bc4 (14.Rc1 c3 15.Bc3 Qf4+=) 14...Nd5 (14...Rfd8 15.Qe2+=) 15.Qb3 (15.Ne5 Nf4 16.Rc1 Bg2+=) 15...h6 (15...Rfd8 16.Rfc1 Qf4 17.a5+=) 16.Ba3 Ba3 17.Ra3 (17.Qa3 Rfd8+=) 17...N5f6 (17...Rfd8 18.Rc1+=) 18.Re1 (18.Rfa1 Bd5 19.Bd5 Nd5=) 18...Bd5 (18...Qd6 19.Rc1+=) 19.Ne5 (19.Rc1 Rfd8=) 19...Bc4 (19...Ne5 20.Bd5 Ng6 21.Be4 Ne4 22.Re4 Qc1 23.Nf1+=) 20.Ndc4 Nd5 (20...Ne5 21.Ne5 Qd6 22.Qb2=) 21.Nc6 (21.Rc1 Ne5 22.de5 f6=) 21...Nb8 22.N4e5 Rfe8 (22...Nc6 23.Nc6 a6 24.Ra2=) 23.Nb8 Qb8 24.Nc6 (24.Qf3 Qb7=) 24...Qb7 (24...Qd6 25.Rc1= (worse is 25.Na7 Rc3 26.Qd5 Qd5 27.Rc3 Qd4–/+)) 25.Qf3 a6 26.Ne5 (26.Nb4 a5 27.Nd5 Qd5 28.Qd5 ed5 29.Re8 Re8=) 26...ab5 (26...Rc7 27.Qh5=) 27.ab5 Qe7 28.Nc6 Qf8 29.Ra7 Ra8 30.Rea1 Ra7 31.Ra7 Kh8? 32.Rf7 Qg8 33.Ne5 Nf6 34.Qd3 Qh7 35.Ng6 Kg8 36.Re7 Re7 37.Ne7 Kf7 38.Qh7 Nh7 39.Nc8 Ke8 40.Nb6 Nf6 41.f3 Kd8 42.Kf2 Kc7 43.Na4 Nd5 44.Nc5 Kd6 45.g3 e5 46.Ne4 Ke6 47.de5 Ke5 48.Ke2 Kd4 49.Kd2 Kc4 50.f4 Kb5 51.Nc3 Kc4 52.Nd5 Kd5 53.Ke3 h5 54.Kd3 Ke6 55.Ke4 Kf6 56.g4 hg4 57.hg4 g6 58.Kd5 g5 59.f5 Ke7 60.Ke5 Kf7 61.f6 (61.f6 Kf8 62.Kf5+–) 1–0. De Visser,Arno – de Beurs, 1982.

7.0–0 c5 8.a4 Nbd7 9.d3 =.

7.0–0 c6 8.a4 cb5 9.ab5 Bb7 10.c4 a6 11.ba6 Ra6 12.Na3 Ba3 13.Ba3 Re8 14.cd5 Nd5 15.Ba6 Ba6 16.Re1 Bb7 17.Qe2 Qf6 18.Reb1 Ba6 19.Qe1 Bd3 20.Bb2 Qg6 21.Ne5 Qe4 22.f3 1–0. Bonetti,Shane – Mandarin65, ICC, 2002.

7.c4 Bb7 8.cd5 Nd5 9.0–0 c5 10.Nc3 Bf6 11.a3 Nd7 12.Qc2 Ne5 13.Ne5 Be5 14.f4 Bc3 15.Bc3 Nc3 16.dc3 Qe7 17.Bd3 f5 18.Rad1 Rad8 19.Rfe1 Rf6 20.Bc4 Bd5 21.Qb3 Bc4 22.Qc4 Rff8 23.Rd8 Rd8 24.e4 Qf7 25.a4 Kf8 26.a5 Rd6 27.h3 Qd7 28.Kh2 h6 29.ef5 ef5 30.Qe2 ba5 31.Qc4 Rd5 32.Ra1 Qd8 33.Ra5 Qa5 34.Qd5 Qb5 35.Qf5 Kg8 ½–½. Woelfelschneider – Kollmann, corr 1998.

7.c4 dc4 8.Bc4 c5 9.0–0= Bb7 10.d3 Bd5 11.Nbd2 Nbd7 12.Ne5 Ne5 13.Be5 Nd7 14.Bb2 Bf6 15.Bf6 Nf6 16.Qc2 Qc7 17.f3 Qe5 18.Rfe1 Rfd8 19.a4 Qd6 20.Ra2 Nd7 21.a5 Ne5 22.ab6 ab6 23.Ra8 Ra8 24.Rd1 Rd8 25.Kf2 Qe7 26.g3 Bc4 27.dc4 Ra8?? 28.Qe4+– Qa7 29.Qe5 Qa4 30.Ke2 Qa2 31.Qc7 Qa5 32.Nb3 Qa2 33.Ke1 g6 34.Rd8 Rd8 35.Qd8 Kg7 36.Nd2 Qa1 37.Ke2 Qh1 38.Qb6 Qh2 39.Kd3 Qh5 40.Qc6 Qf5 41.Qe4 Qf6 42.f4 Qd8 43.Ke2 h5 44.Qe5 Kh7 45.Qc5 h4 46.Qg5 Qa8 47.Qh4 Kg7 48.Qh2 Qa2 49.Qg2 Qc2 50.Qc6 Qf5 51.Qe4 Qg4 52.Qf3 Qh3 53.b6 Qh2 54.Kd3 Qh3 55.b7 Qh8 56.Qe4 Qb8 57.Qe5 (57...Qe5 58.fe5 g5 59.b8Q Kh7 60.Ne4 Kg7 61.Nf6 Kg6 62.Qg8 Kf5 63.Kd4 g4 64.Qg4#) 1–0. Nordbrink – Peske, 1980.

7.c4 dc4 8.Bc4 c6 9.a4 =.

5.f4 a6

6.a4 Bb4 7.Nf3 0–0 8.Bd3 Nbd7 9.0–0 Bb7 10.Qe1 ab5 11.ab5 Ra1 12.Ba1 Ne4 13.c3 Be7 14.c4 Ndc5 15.Be2 Nb3 16.Bb2 Bb4 17.Nc3 Nbd2! 18.Nd2 Nc3 19.Nf3 Ne2 20.Qe2 Qe7 21.cd5 ed5 22.Qd3 Qe4 23.Qd4 f6 24.h3 Ra8 25.Nh2? (better is 25.Rc1 Bc5 26.Qe4 de4 27.Nd4–+) 25...Ra5 0–1. cristero (2460) – pcmvr, net–chess.com, 2015.

6.a4 Bd7 7.Nf3+= ab5 8.ab5 Ne4?? (better is 8...Ra1 9.Ba1 Bd6+=) 9.Ra8+– Bc5 (9...f6 10.c4 Qc8 11.cd5 ed5 12.Qb3+–) 10.Bg7 Rg8 11.Bb2 c6 (11...Bd6 12.Nc3 c5 13.Ne4 de4 14.Ng5 Rg5 15.fg5 Qg5 16.Qa1 Qh4 17.g3 Bg3 18.Kd1+–) 12.Nc3 (12.Ne5 cb5 13.Qh5 Rf8 14.Nd7 Kd7 15.Bb5 Kc7 16.Ra7 Kc8+–) 12...cb5 (12...Bd6 13.g3 Qc7 14.Ne4 de4 15.Ne5+–) 13.Nb5 (better is 13.Ne4 de4 14.Ne5 Qc7+–) 13...Bb5 (13...Bc6 14.Ra7 Nd7+–) 14.Bb5 Ke7 15.0–0 (15.Ne5 Bd6 16.Qh5 Be5 17.Be5 Nc6 18.Qh4 f6 19.Rd8 Nd8+–) 15...Qc7 16.Ne5 (better is 16.Qa1 Nd6 17.Bf6 Kf8+–) 16...f6 17.Rb8! Rb8 (17...Qb8 18.Nc6 Double attack (18.Nc6 Decoy); 17...Rb8 18.Nc6 Double attack (18.Nc6 Decoy)) 18.Nc6 Kd6 (18...Kf8 19.Nb8 Qb8 20.Qg4+–) 19.Nb8 Qb8 20.Qe2 Qg8 (20...Bb4 21.c4 Qa7 22.Ra1+–) 21.d3 Ng3 22.hg3 f5 23.c4 (23.Be5 Ke7 24.Qh5 Be3 25.Rf2 Bf4 26.gf4 d4 27.Qh4 Kf8 28.Qd8 Kf7 29.Qf6) 23...Qg3 24.Rf3 Qg6 25.Be5 Ke7 26.d4 (26.Qa2 Kf7 27.Qa7 Kg8 28.Be8 b5 29.Qd7 Ba3 30.Bg6 Be7 31.Qe7 hg6 32.Qg7) 26...Bd6+– 27.cd5 Be5 28.de5 h5 29.d6 1–0. cristero (2460) – preethan (2135), net–chess.com, 2015.

6.a4 Be7 7.a5 =+.

6.Nf3 Be7 =+.

6.a4 ab5!?

7.ab5= Ra1 8.Ba1 Bc5 9.Nf3 Nbd7 (9...0–0 10.Be2=) 10.Bd3 Bb7 (10...0–0 11.0–0=) 11.0–0 Qa8 (11...0–0 12.Bd4=) 12.Bd4 Bd4 (12...0–0 13.Nc3=) 13.Nd4+= c5 14.bc6 Bc6 15.Nc3 Nc5 (15...0–0 16.Qf3=) 16.Qb1 0–0? (better is 16...Nd3 17.Qb6 Nf4 18.Rf4 Bd7+=) 17.Qb6+– Nd3 18.Nc6 1–0. pcmvr (1700) – mgokhale (1630), net–chess.com, 2006.

7.ab5 Ra1 8.Ba1 Nbd7 =.

5.f4 Bb7

6.Nc3 a6 =.

6.Nf3 a6 7.Nc3 =.

6.Nf3 g6 7.c4 (7.g4 Bg7+=) 7...Bg7= 8.cd5 (8.g4 a6=) 8...Bd5 9.Be2 (9.Nc3 0–0=) 9...0–0 (9...a6 10.ba6 0–0 11.Nc3=) 10.0–0 (10.Nc3 a6=) 10...Nbd7 (10...a6 11.a4=) 11.Nc3+= Ne4 (11...c5 12.Qc2=) 12.Qc2 Nc3 (12...c5 13.Rad1+=) 13.Bc3 Nf6 14.a4 (14.Bb4 Re8+=) 14...Rc8 (14...c6 15.d3 Qe7 16.Be5 cb5 17.ab5+=) 15.Qb2 (15.d3 c6 16.Qb2 c5+=) 15...Nh5 (15...c5 16.d3+=) 16.Bg7 (16.Ne5 c5+=) 16...Ng7+= 17.d3 (17.a5 c6+=) 17...Bf3 18.Rf3 c5 19.e4 (19.a5 Nf5+=) 19...Qd4= 20.Qd4 cd4 21.Rff1 Rc3 22.Rab1 Rfc8 23.Rb4= Rd8 24.Rd1 Ne8 25.Rc4 Rc4 26.dc4 Nf6 27.Bd3 Nd7=+ 28.Kf2 Nc5 29.Bc2= Rd7 30.Ke2 Kg7 31.e5 f6 32.ef6 Kf6=+ 33.Rd2 e5 (Black fights for the initiative) 34.fe5 Ke5 35.g3 Ne4–/+ 36.Be4 Ke4 37.a5 d3–+ 38.Kd1 Rf7 39.Kc1 Rc7 40.ab6 ab6 41.c5? bc5 42.b6 Rb7 43.Rb2 c4 44.Rb5? c3 45.Rc5 Kd4 46.Rc6 Rf7 47.Rd6 Kc4 48.Rc6 Kb3 (49.Rc3 Kc3 50.Kb1 d2 51.Ka2 Rf5 52.Kb1 d1Q 53.Ka2 Ra5#) 0–1. Wilke,Hans Peter – Gragert,Torsten, Berlin Zugzwang op, 1998.

6.Nf3 Bd6

7.Nc3 Nbd7 8.a4 a6 9.Be2 ab5 10.ab5 0–0 11.Nd4 Nc5 12.Ra8 Qa8 13.0–0 Na4 14.Na4 Qa4 15.Nb3 Qa2 16.Bf6 gf6 17.Bd3 e5?? (better is 17...f5+=) 18.Qg4+– Kh8 19.Qf5 Qb3 20.Qh7 1–0. pcmvr – cristero (2460), net–chess.com, 2015.

7.Be2 0–0 8.0–0 a6 9.Nc3 =.

7.Be2 0–0 8.0–0 Re8 9.a4 a6 =.

7.Be2 0–0 8.0–0 Re8 9.c4 dc4 10.Bc4 a6 11.Nc3 =.

7.Be2 0–0 8.0–0 Re8 9.c4 c5 10.a4 (10.Ne5 dc4 11.Nc4 Be7=) 10...a6 11.Na3 ab5 (11...Be7 12.Ne5=) 12.ab5 Nbd7 13.Qc2 Qc7 14.cd5 (14.Ra2 Ra7=) 14...Bd5 (14...ed5 15.Rfe1=+) 15.Nc4= Bc4 (15...Be7 16.d3=) 16.Bc4+= Qb7 (16...Ra1 17.Ra1 e5 18.Qb3+/–) 17.h3 (17.Ra6 Red8+=) 17...Nd5 (17...Ra1 18.Ra1 Ra8 19.Ra8 Qa8 20.Qd3+=) 18.Ng5 N5f6? (better is 18...Nf8!?+=) 19.f5 (better is 19.Ra8 Ra8 20.f5+–) 19...h6? (better is 19...Ra1 20.Ba1 Nf8+–) 20.fe6+– fe6 21.Ne6 (21.Be6!? Re6 22.Ra8 Qa8+–) 21...Kh8 22.Qf5 (better is 22.Ra8 Ra8 23.Qf5+–) 22...Qe4?? (better is 22...Ra1 23.Ra1 Bb8+–) 23.Qe4 (23.Bf6?! Nf6 24.Ng7 Be5 25.Qe4 Ne4 26.Ne8 Ra1 27.Ra1 Ba1+–) 23...Ne4 24.Bg7 (24.Ng7?! Reb8 25.Nf5 Be5+–) 24...Kg8 (24...Kh7 25.Bd5 Re6 26.Be6 Re8 27.Bd7 Re7+–) 25.Nf8 (25...Kg7 26.Rf7 Kg8 27.Rd7 Re6 28.Be6 Kf8 29.Ra8 Bb8 30.Rb8#) 1–0. Kucharkowski,Jens – Zimmer,Georg, corr SOK–93–93, 1993.

7.Be2 a6 8.Nc3 =.

6.Nf3 Nbd7

7.c4 a6 8.Nc3 +=.

7.c4 Be7 8.Be2 (8.cd5 ed5 9.Be2 a6=) 8...0–0 (8...dc4 9.Bc4 c6 10.a4=) 9.0–0= dc4 10.Na3 (10.Bc4 c6=) 10...c3 (10...a6 11.ba6 Ra6 12.Nc4+=) 11.dc3 Bc5 (11...a6 12.c4+=) 12.Nc2= Nd5 (12...a6 13.c4=) 13.Nfd4 e5 (13...a6 14.c4 Ne7 15.Bf3 Bf3 16.Qf3+= (worse is 16.gf3 ab5 17.cb5 Nd5+=)) 14.fe5+= Ne5 15.Qe1 (15.c4 Nf6+=) 15...Re8 (15...a6 16.Qg3 Ng6 17.c4=) 16.Qg3+= Ng6 17.Nf5 Ne3 18.Nce3 Qd2 19.Bc4 (better is 19.Qf2 Be3 20.Ne3 Qe3 21.Rfe1–/+) 19...Re3–+ 20.Ne3 (20.Bf7 Kf8 21.Ne3 Be3 22.Kh1 Nf4 23.Rf4 Bf4–/+) 20…Be3 (20...Be3 21.Kh1 Nf4–+ (21...Qb2?! 22.Rab1 Qc2 23.Bb3=)) 0–1. Eriksson,B – Baeckstroem, corr Sweden, 1977.

7.Be2 Be7 8.0–0 0–0 9.a4 Re8 10.Nd4 a5 11.Nc6 (11.Nc3 Bc5=) 11...Bc6 12.bc6 Nc5 13.Rf3 Nfe4 14.d4 Na6 15.Nd2 f5 16.Ne4 fe4 17.Rg3 Bf6 18.Bb5 Re7 19.c3 Qe8 20.Qg4 Nb8 21.f5 Nc6 22.c4 (22.Ba3 Qd7 23.Be7 ef5+–) 22...Rd8 (22...h5 23.Qf4 h4 24.cd5 hg3 25.Bc6+/–) 23.Rf1 (better is 23.cd5 Rd5 24.Qe4+/–) 23...Kh8? (23...h5 24.Qf4 h4+/–) 24.fe6 Rd6 (24...dc4 25.Rf6! gf6+–) 25.cd5 Rd5 26.Rf6! (26.Qe4?! Rb5 27.ab5 Re6+–) 26...Rb5 (26...gf6 27.Qf4 Double attack (27.Qf4 Decoy)) 27.ab5 gf6 (27...Nd8 28.Ba3 h5 29.Qf5+–) 28.d5 Ne5 29.Qf5 Qf8 30.Be5 (30.Be5 Qh6 31.Bf6 Rg7 32.e7 Qh2 33.Kh2 Kg8 34.e8Q#) 1–0. Jaeger,Eric – Goebel,Knut, corr WS/O/146 ICCF, 2007.

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

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