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1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7

(...)

6.a4 a6 7.Bd3 ab5 8.ab5 h6 9.0–0 Ra1= 10.Ba1 c6 11.c4 c5 12.Nc3 d5 13.Qa4 Nbd7 14.Qa7 Qa8 15.Qa8= Ba8 16.Bb2 0–0 17.Ra1 Bb7 18.Ra7 Rb8 19.h3 dc4 20.Bc4 Bf3 21.gf3 Bf8 22.Ne4 Ne4 23.fe4+/– Nf6 24.Be5 Rd8 25.d3+– Nd7 26.Bg3 Nf6? 27.Rb7 Nd7 28.Bc7 Rc8 29.Bb6 Nb6 30.Rb6 Be7 31.Rb7 Bd6 32.f4 Kf8 33.Kf2 g6 34.f5! gf5 35.ef5 ef5 36.Rf7 Ke8 37.Rf5 Be7 38.Re5 Kd8 39.Kf3 Bg5 40.e4 Rc7 41.Re6 Rf7 42.Kg3 Be3 43.Rg6 Rf8 44.Bd5 Kc7 45.b6 Kb8 46.b7 Bf2 47.Kg4 Be3 48.Ra6 Kc7 49.Ra8 Rb8 50.Kf5 Bd4 51.e5 Bf2 52.e6 Bg3 53.Rb8 Kb8 54.e7 (54.e7 Ka7 55.b8Q Bb8 56.e8Q Bf4 57.Qc6 c4 58.Qb7#) 1–0. verns2 (1640) – ANZARBOND (1605), internet, 2010.

6.Nc3 d6 7.Be2 Nbd7 (7...a6 8.0–0=) 8.0–0 0–0 9.d4 (9.Nd4 a6=) 9...d5 (9...c6 10.bc6 Bc6 11.Bd3=) 10.a4 c5 11.bc6 Bc6 12.Rb1 (12.Ba3 Ne4 13.Be7 Qe7=) 12...Bb4 (12...a6 13.Bd3=) 13.Nb5 (13.Ne5 Rc8=) 13...a6+= 14.c3 Ba5 (14...Be7 15.Na3+=) 15.Na3 Qe7 16.Qb3 Rfc8 17.Nc2 (17.Rfc1 e5=) 17...Ne4 Exerts pressure on the backward pawn 18.c4 (18.Nb4 Bb7+=) 18...dc4 19.Bc4 b5 (19...Nd6 20.Be2+=) 20.ab5 ab5 21.Bd3 b4 22.Nce1 (22.Rfc1 Bd5 23.Qa4 Nb6+=) 22...Bd5–/+ 23.Qd1 Bc7 24.Ra1 Ra1 25.Qa1 Ra8 (25...Qd6 26.Qb1 Ndf6 27.Qd1–/+) 26.Qc1 Nb6 (26...Bd6 27.Qb1 Ndf6 28.Ne5–/+) 27.Ne5+= Be5 28.de5 Rc8 29.Qd1 Nc4 30.Be4 Nb2 (30...Be4 31.Qd4–/+) 31.Qd4 Be4 32.Qe4 Nc4 33.Nf3 b3 34.h3 b2 35.Rb1 h6 (35...Qd8 36.Nd4+=) 36.Qc2+= Qb4 37.Kh2? (better is 37.Nd4+=) 37...Rb8–+ 38.Nd4 Na3 (38...Ne5 39.Qc7 Nd3 40.Nc6+–) 39.Qe4 Qd2 (39...Qd2 40.Rb2 Qb2–+ (40...Rb2?! 41.Qa8 Kh7 42.Qa3–+); 39...Nb1 40.Qb1 Qd2 41.Nc6–+) 0–1. Waite,Damiel – Maass,Walter, CompuServe, 1994.

6.c4 a5 7.Be2 d6 (7...0–0 8.0–0=) 8.0–0 Nbd7 9.d4 0–0 10.Nbd2 (10.Nc3 c6=) 10...d5 (10...Rc8 11.Bd3=) 11.Qc2 (11.cd5 Bd5 12.Qa4 Rc8+=) 11...dc4 (11...c6 12.cd5 Nd5 13.Bd3=) 12.Bc4 (12.Nc4 c6 13.a4=) 12...Bf3 (better is 12...Rc8!?=) 13.Nf3+/– (13.gf3?! Rc8=) 13...Nb8 (13...Rc8 14.Bd3+/–) 14.Bd3 Qd7 (14...a4 15.e4+/–) 15.e4 g6 (15...a4 16.Rac1+/–) 16.Ne5 (better is 16.Rfc1+–) 16...Qe8 (better is 16...Qd6!?+–) 17.Qc7 Qd8 (17...Nbd7 18.Nc6+–) 18.Qb7 Nbd7 19.Nc6 Qe8 20.Rac1 (20.Rad1 Ng4+–) 20...Bb4 (20...a4 21.Rfd1+–) 21.Rfd1 Bd6 1–0. DEFFM – GuestNQQX, freechess.org, 2018.

6.c4 c6 7.Be2 cb5 8.cb5 d5 (8...a6 9.0–0=) 9.0–0 Nbd7 (9...0–0 10.Nc3=) 10.Nc3 (10.Bd4 Bd6=) 10...0–0 11.a4 a5 (11...a6 12.d4=) 12.d4 (12.Rc1 Rc8=) 12...Rc8 13.Qb3 (13.Rc1 Bd6=) 13...Bb4 (13...Bd6 14.Ba3 Ba3 15.Ra3=) 14.Rfc1 Qe7 (14...Ne4 15.Rc2=) 15.Rc2 (15.Ba3 Ba3 16.Qa3 Qa3 17.Ra3 Rc7+=) 15...Rc7= 16.Rac1 Rfc8 17.Na2 Rc2 18.Rc2 Rc2 19.Qc2 Bd6 20.Nc1 (20.Nc3 Ne4=) 20…Ne4 ½–½. Herm,Florian – Ohnezat,Nico, Baden–ch AT1, 2003.

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

6.c4 h6 7.Be2 0–0 8.0–0 d5 (8...a6 9.Nc3=) 9.d4 (9.cd5 Nd5 10.Nc3 a6=) 9...dc4 (9...a6 10.a4=) 10.Bc4 Bd5 (10...a6 11.Nc3=) 11.Be2 (11.Bd5 ed5 12.Qa4 a6=) 11...Nbd7 (11...a6 12.Nc3=) 12.Nc3+= Bb4 (12...Bb7 13.Qc2+=) 13.Qc2 (13.Nd5 Nd5 14.Rc1 Bd6+/–) 13...Bc3+= 14.Qc3 Ne4 15.Qc2 (15.Qd3+=) 15...Ndf6 (better is 15...c5!?+=) 16.Ne5+/– Nd7 (16...a6 17.ba6 Nd6 18.f3+/–) 17.f3+– Nef6 (17...Nd6 18.e4 Bb7 19.Rac1+/–) 18.e4 Bb7 19.Nd3 (19.Rac1 Ne5 20.de5 Nh5+–) 19...Re8 (19...a6 20.a4+/–) 20.Rfc1 (20.Rac1 Rc8+/–) 20...Rc8+/– 21.Qa4 Ra8 22.Nb4 (22.a3 Re7+/–) 22...a5 (22...Nh5 23.Bf1+/–) 23.Nc6 Bc6 24.Rc6 Nb8 (24...Rc8 25.Rac1+/–) 25.Rc2 (25.Rc4 Ra7+/–) 25...Qd7 26.Rac1 Rc8 27.Kh1 (27.d5 Na6+–) 27...Nh5 (27...Qe7 28.Qa3 Qd7 29.d5+–) 28.g3 (28.d5 Nf6+–) 28...Nf6+/– 29.Rd1 (29.d5 Na6+/–) 29...Na6 (29...Qe7 30.a3+/–) 30.a3 (30.Qb3 Nb8+/–) 30...Nb8 (30...Qe8!?+/–) 31.d5!+– Qe7 (31...ed5 32.Bf6 Decoy) 32.d6! cd6?? (32...Qe8 33.Bf6 gf6 34.Rc7 Nd7+–) 33.Rc8 (33.Rc8 Kh7 34.e5 de5 35.Be5+–) 1–0. GuestXYLL – GuestFLWM, freechess.org, 2016.

6.Bd3 a6 7.a4 d6 8.Nc3 e5 9.Be2 (9.Bf5 g6 10.Bh3 Nbd7=) 9...0–0 10.0–0 Re8 11.d4 e4 12.Nd2 (12.Ne1 d5+=) 12...d5+= 13.f4 (13.Nb3 c6+=) 13...c5 (13...c6 14.bc6 Nc6 15.Ba3+=) 14.Qe1 (14.ba6 Ba6 15.Nb5 c4+=) 14...cd4–/+ 15.ed4 Qc7 16.Qg3 Bb4 17.Rac1 e3 (17...ab5 18.Nb5 Qd7 19.c3+=) 18.Ndb1+= Bc8 19.Bd3 Qe7 20.Rce1 Bg4 Black plans e2 (20...ab5 21.ab5 Bg4 22.Bc1 Bc3 23.Nc3+=) 21.h3 (21.ba6 Qe6=) 21...Bh5 22.ba6 Na6 23.Bb5 (23.Bc1 e2 24.Be2 Ne4=) 23...e2–/+ 24.Be2 Bc3?? (24...Ne4 25.Qd3 Nc3 26.Nc3 Bc3 27.Qc3 Be2=) 25.Nc3+= Be2 26.Re2 (26.Ne2 Ne4 27.Qg4 Qb4+=) 26...Qb4 27.Re8 Re8 28.Nd1 (28.Ba1 Qd4 29.Kh2 Qe3 30.Qe3 Re3+=) 28...Ne4 29.Qd3 Qa4 30.c3 (30.Nc3 Qb4 31.Rb1 Nc7+=) 30...Nc7 31.Nf2 Nd6 32.f5 Qc6 33.f6 Re6 (33...Nc4 34.Nd1+=) 34.Ng4 (34.fg7 Qb5 35.Qd2 Qe2 36.Qe2 Re2=) 34...Nc4 35.fg7 Kg7 36.Qf3 (36.Bc1=) 36...f6 (36...f5 37.Qf5 Qe8+/–) 37.Qg3 (37.Bc1 Kf7+/–) 37...Kh8 38.Nh6 Do you see the mate threat? 38...Qe8 39.Qc7 Nb2 (39...Nb2 40.Rf3 Rc6+/–). Waibel,Ulrich (1650) – Klaiber,Reiner (1795), remoteschach.de, 2004.

6.d4 c5 7.bc6 dc6 8.Nbd2 0–0 9.Bd3 c5 10.0–0 Nc6 11.c3 Rc8 12.Rb1 cd4 13.ed4 Bd6 14.Re1 Bb8 15.Ba3 Re8 16.Ne4 Ne4 17.Re4 Qc7 18.Rh4 Ne7 19.Bh7 Kf8 20.Ne5 Rcd8 21.Qh5 g6 22.Qh6 1–0. mtrc – TT12, internet, 2002.

6.Be2 c5 7.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2).

6.Be2 Nc6?? 7.bc6+– Bc6 8.0–0 (8.Nc3 0–0+–) 8...0–0 9.c4 (9.Nc3 a6+–) 9...d5 (9...Rb8 10.Qc2+–) 10.Nc3 (10.Ne5 Bb7+–) 10...dc4 11.Bc4 (11.Ne5 Bb7 12.Bc4 c5+–) 11...Bf3 12.gf3 (12.Qf3 Qd2 13.Rab1 Qc2+–) 12...Bd6 (12...a6 13.d4+–) 13.f4 Nd7 (13...a6 14.d4+–) 14.Qh5 (14.d4 a6+–) 14...g6 (14...Nf6 15.Qg5+–) 15.Qh6 Re8 16.Ne4 (better is 16.d4+–) 16...f6? (16...Bf8 17.Qh3 Bg7+–) 17.Ng5! (17.Nd6?! cd6 18.f5 d5 19.fg6 Re7+–) 17...Qe7 (17...fg5 18.Qg7) 18.Be6 Kh8 19.Nf7 Qf7 (19...Kg8 20.Bb3 Qf7 21.Bf7 Kf7 22.Qh7 Ke6 23.Kh1+–) 20.Bf7 Rf8 (20...Re7 21.Bd5 Rd8+–) 21.Bg6 (21.Bg6 Rf7 22.Bf7+–) 1–0. jaddwarrior (2055) – johniel (1865), ChessWorld.net, 2016.

6.g3 0–0 7.Bg2 c5 8.c4 d6 9.0–0 Nbd7 10.d3 Rc8 11.Nbd2 Rc7 12.Nh4 (12.a4 a6+=) 12...Bg2= 13.Ng2 d5 14.Qe2 Qa8 15.e4 de4 16.de4 Rd8 17.e5 ½–½. Dudek,Jaromir (1905) – Hrubant,Ivan (2120), Czechia KP–chTB, 2007.

6.a4 0–0

7.Be2 a6 8.c4 ab5 9.ab5 Ra1 10.Ba1 c6 11.Nc3 d5 12.0–0 dc4 13.Bc4 cb5 14.Nb5 Nc6 15.d4 Nd5 (15...Qa8 16.Bc3=) 16.Qb3 (16.Qb1!?=) 16...Na5+= 17.Qa2 (17.Qa4 Nc4 18.Qc4 Qa8+=) 17...Nc4 (17...Nb4!? 18.Qe2 Nc4 19.Qc4 Ba6–/+) 18.Qc4+= Ba6 19.Rb1 f6 (19...Qe8 20.Qb3 Bb5 21.Qb5 Qb5 22.Rb5+=) 20.Qb3 (better is 20.e4!? Nf4 21.g3+/–) 20...Qd7= 21.e4 Nb4 (better is 21...Nf4=) 22.Nc7?? (better is 22.Bc3 Bb5 23.Bb4 Bb4 24.Qb4=) 22...Qc7–+ 23.Qe6 Kh8 24.d5?? (24.Bc3 Bd3 25.Rc1 Rc8–+) 24...Bd3 (better is 24...Qc2 25.Re1 Bc5–+) 25.Rd1 Be2 (25...Bd6 26.e5 fe5 27.Be5–+) 26.d6 Bd6 (26...Bd6 27.Qd6 Qc5 28.Qc5 bc5+=) 0–1. GuestHDRS – Maal, freechess.org, 2017.

7.Be2 c5 8.0–0 d5 9.c4 Nbd7 (--> 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.a4 Nbd7).

7.Be2 c6 8.0–0 cb5 9.ab5 a6 10.c4 ab5 11.cb5 Ra1 12.Ba1 Qc7 13.Nc3 Nd5 14.Nd5 Bd5 15.d4 g6 16.Ne5 Bd6 17.Bf3 Bf3 18.Qf3 Be5 19.de5+/– Qc5 20.Rb1 Qc2 21.Qd1+/– Qc5 22.Bd4 Qc7 23.Rc1 Qb7 24.Ra1 Rc8 25.Rc1 Rc1 26.Qc1+/– Kg7 27.h3 Qd5 28.Qb2 d6 29.ed6 Kg8 30.Bh8 (30.Bh8 Qd1 31.Kh2 Qd6 32.Be5+=; 30.Qc1 Qd6 31.Qc8 Qf8+–) 1–0. metal – Timberwolf, caissa.com, 2007.

6.a4 c6

7.Bd3 d5 8.0–0 0–0 9.Nc3 c5 10.Ne5 Nbd7 11.f4 c4 12.Be2 Nc5 13.d3 d4 14.ed4 Qd4 15.Kh1 cd3 16.Nd3 Nd3 17.Bd3 Rfd8 18.a5 Rac8 19.Ne2?? Qd5 20.Rf2? Ng4 21.Qe1 Nf2 22.Qf2 Bc5 23.Qg3 g6 24.a6 Ba8 25.h3 Bf8 26.Nd4 Bg7 27.Ra4 h5 28.Qf3? Qc5 29.Qe3 Qd5 30.Qf2?? h4 31.Kg1 e5 32.Nc6? Bc6–+ 33.bc6 Rc6 34.fe5 Be5 35.Be5 Qe5 36.Rh4?? Rd3! (36...Rd3 37.Qf4 Qf4 38.Rf4 Rc2–+) 0–1. jboger (2100) – vhilts (2310), net–chess.com, 2011.

7.Be2 cb5 8.ab5 d6 9.0–0 Nbd7 (9...0–0 10.Nc3=) 10.d4 (10.Nc3 0–0+=) 10...0–0 11.c4 (11.Nc3 Nb8+=) 11...Qc7 (11...a5 12.ba6 Ra6 13.Ra6 Ba6 14.Nbd2+=) 12.Nbd2 (12.Nc3 Rfc8+=) 12...Ne4 (12...a6 13.ba6 Ba6 14.Qb3+=) 13.Ne4 Be4 14.Bd3 (14.Nd2 Bb7 15.e4+=) 14...Bf3 (better is 14...f5!?+=) 15.Qf3+/– (15.gf3?! Nf6+=) 15...Nf6 16.Rfc1 Qd7 (16...Rac8 17.e4+/–) 17.Ra6 (17.e4 Rac8+/–) 17...Rfc8 (17...d5 18.c5+–) 18.Rca1 (18.d5 Rab8+/–) 18...d5 19.c5! bc5 20.dc5 Bc5 (20...Rc5 21.b6 Qc6 22.Ra7 Ra7 23.ba7+/–) 21.Bf6+– gf6 22.Qf6 Bb6 23.R6a4 d4 (23...Kf8 24.Qh6 Ke8 25.Qh7+/–) 24.Qg5 (24.ed4 Rc3 25.Bh7 Kh7+–) 24...Kh8 (better is 24...Kf8 25.Qh6 Ke8+/–) 25.Qf6 Kg8 26.Be4 Rab8 27.Bc6 (27.ed4 Rd8 28.d5 Kf8+–) 27...Qd6 (27...Qd8!? 28.Qh6 Kh8+/–) 28.ed4+– Bd8 (28...Qd8 29.Qf3+–) 29.Qh6 f5 (29...Qf8 30.Qf8 Kf8 31.Ra7+–) 30.Ra7 (30.Re1 Qe7+–) 30...Rc7 (30...Bc7 31.Re1 e5 32.Qd6 Bd6 33.Rd7+–) 31.d5! Qe5 (31...ed5 32.Qd6 Pinning (32.Qd6 Deflection)) 32.Qe6 Qe6 33.de6 Kf8 34.Rc7 Bc7 35.Ra7 Bd8 (35...Rc8 36.Rb7 Ke7 37.b6 Ke6 38.Rc7+–) 36.Rh7 Kg8 37.Rf7 (37.e7 Ba5 38.Rh3 Kf7+–) 37...Rc8 (37...Bg5 38.Rf5 Be7 39.g4+–) 38.e7 Kf7 (38...Be7 39.Re7 Kf8+–) 39.e8Q Kf6 40.Qd7 Rb8 41.Qd6 Kg5 42.Qb8 (42.f4 Kg4 43.Bf3 Kh4 44.Qh6) 42...Bf6 43.Qg8 (43.Qg3 Kh5 44.Be8 Kh6 45.Qg6) 43...Kf4 (43...Kh6 44.Be8 Bg7 45.h4 f4 46.b6 f3 47.gf3 Be5 48.Qg6) 44.Qg3 1–0. DEFFM – abracadabras, freechess.org, 2018.

6.a4 d5

7.d4 c5+= 8.c4 cd4 9.Bd4 Nbd7 10.cd5 Bd5 11.Be2 0–0 12.0–0 Rc8 13.Nbd2 Ne4 (13...Bd6 14.Rc1+=) 14.Ne4= Be4 15.Bd3 Bd3 16.Qd3 Bf6 17.Bf6 Nf6 18.Qd8 Rfd8 19.Nd4 Rc7 (19...g6 20.Nc6 Rd7 21.Rfd1=) 20.a5 Nd5 21.g3 g6 22.ab6 ab6 23.Nc6 Re8 24.Rfc1 Kg7 25.e4 Ne7 26.Ra6 Nc6 (26...Rb8!+=) 27.Rb6+/– (27.Rc6?! Rc6 28.bc6 b5=; 27.bc6?! Rb8=) 27...Rec8 (27...Kf6 28.f4+/–) 28.Rbc6+– (28.Rcc6?! Kf6+/–) 28...Kf6?? (better is 28...Rc6 29.Rc6 Rd8+–) 29.Rc7 Rc7 1–0. DEFFM – GuestXMPH, freechess.org, 2018.

7.Be2 c5=.

7.Be2 Nbd7 8.d4 0–0 9.0–0 Ne4 10.c4 f5 (10...a6 11.cd5 ed5 12.Nc3+=) 11.Nbd2 (11.Nc3 c5+=) 11...Qe8 (11...a5 12.Qc2=) 12.a5+= Rc8 (12...dc4 13.Bc4 Qg6 14.g3+=) 13.ab6 ab6 14.Ra7 Nd2 15.Nd2 (worse is 15.Rb7 Nf1 16.Bf1 Bd6 17.cd5 ed5+=; 15.Qd2?! Ra8 16.Rfa1 Ra7 17.Ra7 Qb8+=) 15...Rb8 (15...Ra8!? 16.Ra8 Qa8+=) 16.Qc2+/– Qg6 (16...Bd6!?+/–) 17.Rb7+– Rb7 18.cd5 ed5 19.Qc6 Qc6 20.bc6 Rbb8 (20...Ra7 21.cd7 c6 22.Rc1+/–) 21.cd7 Rbd8 22.Bb5 Rf6 (22...Kf7 23.Rc1 Bd6 24.Nf3+–) 23.Rc1 Bd6 24.Bc6 Rh6 (24...Kf8 25.Nf3+–) 25.g3 Kf8 26.Nf3 Ke7 (26...Bb4 27.Bb5 Bd6 28.Ne5+–) 27.Bd5 Rd7 28.Bc6 Rd8 29.d5 Rg8 (29...g6 30.Ra1+–) 30.Nd4 g5 (30...Rf6+–) 31.Nf5 (31.Nf5 Kf8 32.Nh6+–) 1–0. Janek – Freeday, internet, 2018.

6.a4 d6

7.a5 Nbd7 8.Be2 0–0 9.a6 Be4 10.Nc3 Bg6 11.Nh4 Bh5 12.0–0 Be2 13.Qe2 Rc8 14.f4 c6 15.d3 Nc5 16.Nf3 Qd7 17.bc6 Qc6 18.h4 Qd7 19.Ng5 b5 20.d4 Na4 21.Na4 ba4 22.c4 Qc6 23.d5 ed5 24.Bf6 gf6 25.cd5 Qd5 26.Nf3 Qe4 27.Rfd1 Rc3 28.Kf2 a3 29.Rd4 Qf5 30.g4 Qc8 31.Rd3 Qc5 32.Rc3 Qc3 33.Rb1 d5 34.Nd4 Bc5 35.Rb3 Qc4 36.Qc4 dc4 37.Rb5 Bd4 38.ed4 c3 39.Ke2 Rc8 40.Kd1 Rd8 41.h5 Rd4 42.Kc2 Ra4 43.h6 Kf8 44.Rb1 a2 45.Ra1 Ra3 46.f5 Ke7 47.Kd3 Kd6 48.Ke2 Ke5 49.Ke3 Ra6 50.Kd3 Ra3 51.Ke3 a6 52.Ke2 Kf4 53.Kd3 Kg4 54.Ke3 Kf5 55.Kd3 Kg5 56.Rg1 Kh6 57.Ra1 f5 58.Rh1 Kg7 59.Rg1 Kh8 60.Ra1 h5 61.Ke3 f4 62.Kd3 h4 0–1. Delfi 1.40 – Dragon41, computer chess game, 2001.

7.Be2 0–0 8.0–0 Nbd7 9.Nc3 a6 10.Nd4 ab5 11.ab5 Ra1 12.Qa1 Nd5 13.Nc6 Bc6 14.bc6 Ne5? 15.f4+– Nc6 16.Nd5 ed5 17.Bg7 Re8 18.Bb5 Qd7 19.Rf3 1–0. pierred (2760) – vhilts (2310), net–chess.com, 2010.

7.Be2 Qd7 8.0–0 c6 9.d4 0–0 10.c4 a6 11.Nbd2 cb5 12.ab5 a5 13.Ba3 Re8 14.Qb3 Bf8 15.Rac1 g6 16.Rfd1 Bg7 17.Nf1 Rc8 18.c5 bc5 19.dc5 Bd5 20.Qb1 dc5 21.Bc5 a4 22.Ne5 Qb7 23.f3 Nbd7 24.Nd7 Nd7 25.Ba3 Rc1 26.Rc1 Rc8 27.e4 Rc1 28.Qc1 Bb3 29.Qc6 Qa7 30.b6?? Qb6–+ 31.Qb6 Nb6 32.Bb5? Bd4 33.Kh1 Nc4 34.Bc4 Bc4 35.Nd2 Ba6 36.g4 Be3 37.Nb1 h5 38.h3 hg4 39.hg4 f5 40.gf5 ef5 41.ef5 gf5 42.Nc3 Bb7 43.Kg2 Bc6 44.Ne2 Kf7 45.Ng3 f4 46.Ne4 Ke6 47.Ng5 Kd5 48.Kh3 Kc4 49.Kg4 Kb3 50.Bd6 a3 51.Ba3 Ka3 52.Ne6 Kb3 53.Nf4 Kc3 54.Ng6 Bf3?? 55.Kf3= Kd3 56.Ne5 Kd4 57.Ng4 Kc5 58.Ne3 ½–½. azme – pako1, kurnik, 2011.

6.Nc3 0–0

7.Be2 a6 8.0–0 ab5 9.Bb5 c5 10.Qe2 d5 11.Rfb1 Nc6 12.a4 Nb4 13.d4 Ba6 14.dc5 bc5 15.Nd1 Bb5 16.ab5 c4 17.Bf6+/– gf6 18.Ne1 Ra1 19.Ra1 f5 20.c3 Nd3 21.Nd3 cd3 22.Qd3 Qc7 23.Rb1 Bf6 24.b6 Qb7 25.c4 dc4 26.Qc4 Rc8 27.Qb5 Rc6 28.Qa5 Kg7 29.h3 Bd8? 30.Qa7+– (30...Qa7 31.ba7+–) 1–0. mrkt – Sdr46, ChessWorld.net, 2003.

7.Be2 d6 8.0–0 Nbd7 9.a4 a6 10.d4 c5 11.dc5 Nc5=+ 12.Nd4 a5 13.Bf3 d5=+ 14.Nde2 Rc8 15.Qd4 Qc7 16.Ng3 Rfd8 17.Nce2 Nce4 18.c3 e5 19.Qd3? Ng3–+ 20.hg3 e4 21.Be4 de4 22.Qc2 Rd3 23.Nf4 Rd7 24.Qe2 Rcd8 25.Kh2 Rd2 (25...Rd2 26.Qe1 Rb2–+) 0–1. mic (2150) – cruyce (2165), net–chess.com, 2009.

6.Bd3 0–0

7.0–0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 d6 11.Bb2 (11.Nc3 A) 11...Qd7 12.e4 (12.Qe2 e5 13.e4 Qg4 14.Qe3 Nh5 15.h3 Qe6 16.Ne2 Nd7+=) 12...e5 13.Re1 Qg4 14.h3 Qf4 15.Ne2 Qh6 16.Ng3 Qg6+=; B) 11...c5 12.e4 d5 (12...Qc7 13.Re1 c4 14.Bf1 Nbd7 15.Qe2 Rc8 16.Qe3 d5+=) 13.ed5 ed5 14.Re1 Re8 15.Bf5 d4 16.Ne4 g6–/+; 11.Qe2 A) 11...c5 12.e4 Nbd7 (12...Qc7 13.Bb2 Rc8 14.Na3 Nbd7 15.Ra1 Ra8 16.c4 Nh5=) 13.Re1 Qc7 14.Nc3 Ra8 15.Bb2 Ng4 16.Ra1 Ra1=; B) 11...Nbd7 B1) 12.e4 Nh5 (12...Nc5 13.Nc3 e5 14.Bb2 Qd7 15.h3 Ra8 16.Re1 Ra5+=; 12...e5 13.Nc3 Nc5 14.Bb2 Qd7 15.Ra1 Qg4 16.Qe3 Nd3=) 13.Qe3 Nc5 14.Nc3 Nd3 15.Qd3 f5 16.Qe3 fe4+=; B2) 12.Nc3 Nc5 13.e4 Qd7 14.Bb2 e5 15.h3 Ra8 16.Qe3 Nd3=) 11...Nbd7 (11...c5 A) 12.Be2 Nbd7 (12...Qc7 13.c4 d5 14.d3 Nbd7 15.Qc2 Ra8 16.Nc3 Bd6=) 13.c4 d5 14.d4 dc4 15.Bc4 Qc7 16.Nbd2 Rc8=; B) 12.Nc3 Nbd7 (12...d5 13.Be2 Nbd7 14.d4 Qc7 15.dc5 Nc5 16.Qd4 Bd6=; 12...Qc7 13.Be2 Nbd7 14.d3 d5 15.Qd2 Ra8 16.Ra1 Ra1+=) 13.e4 d5 14.ed5 ed5 15.Re1 Bd6 16.Ne2 d4+=; C) 12.Qe2 d5 13.c4 Nbd7 14.Na3 Qc7 15.cd5 Nd5 16.Nc4 Ra8=; D) 12.c4 d5 (12...Nbd7 13.Nc3 h6 14.Qe2 Bf3 15.Qf3 Ne5 16.Qe2 Nd3=) 13.Qe2 Re8 14.Ne5 Qd6 15.Bc2 Nbd7 16.f4 Ra8=; E) 12.bc6 Nc6 13.Nc3 Nb4 14.Be2 Qd7 15.Qb1 Ra8 16.Nb5 Nc6=) 12.Be2 (12.Nc3 Nc5 13.Be2 Qd7 14.d4 Nce4 15.Ne4 Be4 16.Bd3 Bd3=) 12...Qa8 (12...Re8 13.d3 Nc5 14.c4 d5 15.Nc3 dc4 16.dc4 c6=; 12...e5 13.d4 e4 14.Nfd2 d5 15.c4 dc4 16.Nc3 c6+=) 13.Qc1 (13.d3 Qa2 14.Qc1 c6 15.bc6 Bc6 16.c4 Ra8=) 13...Ne5 (13...c6 A) 14.bc6 Bc6 15.d3= (15.c4 Rc8 16.Nc3 Qb7=) 15...b5 16.Qd2 e5=; B) 14.Nc3 Rc8 15.Qb1 Ne5 16.Ne5 de5=) 14.Ne5 de5 15.f3 Nd7 16.d4 (16.Nc3 Rd8= (16...Qa5=)) 16...ed4 17.ed4 Bd6 18.Bd3 Qd8 19.Nd2 Bf4 20.Qe1 Qg5 21.Nb3 Be3 (21...Qh5 22.h3=) 22.Kh1 Ra8 23.Bc1 Bc1 24.Qc1 Qc1 (24...Qh4 25.c4=) 25.Rc1 h6 26.Kg1 g5 27.Ra1 Ra1 28.Na1 Nf6 29.Nb3 Nd5 30.c4 Nf4 31.Be4 Be4 32.fe4 f5 33.ef5 ef5 34.Kf2 Kf7 35.Nc1 h5 36.g3 Ng6 ½–½. Walther,Manfred – Kruse,Ernst Bruno, DESC, 1999.

7.0–0 d5 8.Ne5 Nbd7 9.f4 a6 10.a4 ab5 11.ab5 Nc5 12.Be2 Nce4 13.d3 Nc5 14.Nd2 Ra1 15.Qa1 Qa8 16.Ndf3 Qa1 17.Ra1+/– Ra8 18.Ra8 Ba8 19.Ba3 Bd6+= 20.Bc5 Bc5 21.Kf2 h6 22.h4 Bb7 23.g4 Bc8 24.Bf1 Nd7 25.g5 hg5 26.hg5 f6 27.gf6 gf6 28.Nc6 Kf7 29.Bh3 Bb7?? 30.Nd8+– (30.Nd8 Ke7 31.Nb7+–) 1–0. spblex – aleandy (2220), net–chess.com, 2009.

6.d4 0–0

7.Bd3 d5 8.Nbd2 c6 9.a4 c5 10.dc5 Bc5 11.0–0 Nbd7 12.c4 dc4 13.Nc4 Bf3 14.Qf3 Be7 15.Rad1 Qc8 16.Ne5 Ne5 17.Be5 Qc5 18.Bd4 Qh5 19.Qh5 Nh5 20.g4 Nf6 21.f3 h6 22.Rf2 Rfd8 23.Rc2 Nd5 24.Rcc1 Bg5 25.f4 Bf6 26.Bf6 Nf6 27.h3 Nd5 28.Kf2 Rac8 29.Rc8 Rc8 30.Kf3 Rc3 31.f5 ef5 32.gf5 Nf6 33.Kf4 Ra3 34.Bc2 Rc3 35.Rd8 Kh7 36.Bd3 Ra3 37.Rd4 Rc3 38.e4 Rc7 39.e5 Nh5 40.Kg4 g6 41.Rd6 Ng7 42.fg6 fg6 43.Bg6 1–0. mrkt – agmac, gameknot.com, 2001.

7.Be2 d5 8.0–0 c5 9.dc5 Bc5 10.Nbd2 Nbd7 11.c4 dc4 12.Nc4 Qe7 13.Nce5 Ne5 14.Ne5 Rac8 15.Nf3 Rfd8 16.Qb3 Bd6 17.Rfd1 Bb8 18.Rd8 Rd8 19.Rd1 Bd5 20.Qa3 Bd6 21.Qc3 Ba2 22.Ra1 (22.e4!? e5 23.Qc6=) 22...Bd5–/+ 23.h3 Bb8 24.Qc2 Be4 25.Qc3 Bb7 26.Qc2 Rc8 27.Qb3 Nd5 28.Ra7?? (better is 28.Be5 Be5 29.Ne5–/+) 28...Ba7–+ 29.Qa4 Bb8 30.Qg4 g6 31.Ng5 (31.Qd4 f6 32.Bc4 Bd6–+) 31...Nf6 (better is 31...Rc2 32.Qd4 e5 33.Qh4–+) 32.Qh4 h5 33.Bh5 (33.Ne6 Qd6 34.Nf4–+) 33...Nh5 34.g4 (34.Qd4 e5 35.Qb6 Bd6 36.Nf7 Qf7 37.Qd6 Rc2–+) 34...Nf6 (34...Qd6 35.e4 Qh2 36.Kf1 Qh1 37.Ke2 Rc2 38.Kd3 Qd1 39.Ke3 Bf4) 35.e4 (35.Nh7 g5 36.Qh6 Rd8–+) 35...e5 (35...Qb4 36.Bf6 Qb1 37.Kg2 Be4 38.Ne4 Qe4 39.f3 Rc2 40.Qf2 Rf2 41.Kf2 Qc2 42.Kf1 Qd3 43.Kf2–+) 36.Nf3 (36.Nh7 Kg7 37.Ba3 A) 37...Nh7?! 38.Qe7 (38.Be7?? Rc1 39.Kg2 Be4 40.f3 Rc2 41.Kg3 Rc3–+) 38...Be4 39.f4–/+; B) 37...Qe6 38.Bf8 Rf8 39.Nf8 Kf8 40.Qh8 Ng8–+) 36...Bd6 37.Qg5 Nh7 (better is 37...Rc5!? 38.Nh4 Be4 39.Nf5 Bf5 40.gf5 Rb5 41.Qc1–+) 38.Qd2 (38.Qe7 Be7 39.Ne5 Ng5–+) 38...Rd8 (38...Rc4 39.Qd3 Re4 40.Kf1–+) 39.Kg2 (39.Qe2 Ng5 40.Ng5 Qg5–+) 39...f6 (better is 39...Be4 40.Bc1–+) 40.g5 (40.Qc3 Nf8–+) 40...Ng5 (better is 40...Be4 41.Bc1 Ng5 42.Qa2 Kg7 43.Bg5 fg5 44.Qe2–+) 41.Ng5 fg5 42.h4 (42.Qe2 Qf6 43.Bc3 Bc5–+) 42...gh4 43.Qh6 Qg7 (better is 43...Be4 44.Kh2 Qf6 45.Qe3–+) 44.Qh4 Rf8 45.Qg5 Be7 (45...Be7 46.Qe5 Qe5 47.Be5 Be4 48.Kg3 Rf3 49.Kg4 Rf2–+) 0–1. tabola (1690) – Fournier,Frederic (1940), Active, 2009.

6.d4 d6

7.Bd3 Ne4 8.0–0 0–0 9.Nfd2 f5 10.Be4 fe4 11.Qg4 d5 12.Qe6 Kh8 13.c4 Rf6 14.Qg4 Bc8 15.Qe2 Rg6 (15...c6 16.cd5 cd5 17.Ba3+/–) 16.f4 (better is 16.f3!?+–) 16...Bg4+= 17.Qe1 Bh3 18.g3 Bf1 19.Qf1 a6 (19...c6 20.bc6 Nc6 21.Nc3+=) 20.cd5= ab5 21.Ne4 (21.Qb5!? Ra5 22.Qc4=) 21...b4 22.Qc4 Ra5 23.Nf2 Bd6 (23...Rd5!? 24.e4 Rd7+=) 24.Nd2 Qg8 (24...Nd7 25.Nd3+=) 25.f5+/– Rg5 26.e4 b5 27.Qd3 g6 28.f6 Qf7 (28...Rh5 29.e5 Bf8 30.Nb3+–) 29.e5 Bf8 30.Nf3 Rf5 31.g4 Rf3 (31...Rf4 32.Bc1 Ra3 33.Qb5 Raf3 34.Bf4 Rf4 35.Qb8 Rd4+–) 32.Qf3 Nd7 33.g5 Nb6 (33...Qe8 34.e6 Ra6+–) 34.e6 Qe8 35.Qe4 (better is 35.f7 Qe7 36.d6 Qg5 37.Kh1+–) 35...Bd6 36.Ng4 Nc4 37.Nh6 Nb2 (37...Ra8+–) 38.Nf7 Kg8 (38...Qf7 39.ef7 Ra4 40.Qe8 Bf8 41.Qf8) 39.Nd6 (39.Nd6 Ra3 40.f7 Qf7 41.ef7 Kg7 42.Qe5 Kf8 43.Qe8 Kg7 44.f8Q) 1–0. Mirada,Luciano (1760) – Koch,Juan (2050), Rubinstein Memorial op, 2009.

7.Be2 0–0 8.0–0 Re8 9.c4 Nbd7 10.Qc2 Nf8 11.Nbd2 Rc8 12.a4 c5 13.dc5 dc5 14.Rfd1 Qc7 15.Be5 Bd6 16.Bf6 gf6 17.Bd3 Red8 18.Be4 Be4 19.Ne4 Be5 20.Ra3 Rd1 21.Qd1 Rd8 22.Rd3 Rd3 23.Qd3 Qd7?? (better is 23...f5 24.Ned2 Bg7+=) 24.Ne5+– fe5 (24...Qd3 25.Nf6 Kg7 26.Ne8 Kh6 27.Nd3 Nd7+–) 25.Nf6 (25.Nf6 Kg7 26.Nd7+–) 1–0. Bonetti,Shane – guest1150, ICC, 2002.

7.Be2 0–0 8.0–0 Re8 9.c4 Nbd7 10.Qc2 Nf8 11.Nbd2 Rc8 12.a4 c5 13.dc5 Rc5 14.Rad1 d5 (14...Rc8 15.Bd3=) 15.Ne5 dc4 16.Bc4 Nd5 (16...Qc7 17.f4 Rc8 18.Qb1+=) 17.Nb3 (17.e4 Rc7+/–) 17...Rc8+= 18.e4 Nb4? (better is 18...Bd6 19.ed5 ed5 20.Nf7 Bh2 21.Kh2 Qc7 22.Ne5 Re5 23.Be5 Qe5 24.f4 Qh5 25.Kg1 Rc4+=) 19.Qc3+– (19.Rd8?! Nc2 20.Re8 Re8+=) 19...Qc7 20.Nf7! Bf6 (20...Kf7 21.Qg7 Mate attack) 21.Nh6! (21.Qb4?! Qf7 22.Bf6 Qf6+/–) 21...Kh8 (21...gh6 22.Qd2 Double attack (22.Qf6 Deflection; 22.Qd2 Decoy; 22.Qb4 Zwischenzug)) 22.Qf6! (22.Qb4?! Bb2 23.Nd2 Bd4+=) 22...gf6 (22...gf6 23.Bc3 Double attack (23.Bf6 Decoy)) 23.Bf6 Qg7 24.Nf7 (24.Bg7?! Kg7 25.Be6 Re6 26.Nf5 Kf6+/–) 24...Kg8 25.Bg7 Kf7 26.Bf8 Kf8 27.Be2 Be4? (better is 27...Rc3 28.Nc1 Ke7+–) 28.Rd4 Bd5 (28...Bg2 29.Kg2 (29.Rb4?! Bf1 30.Kf1 e5+–) 29...Nd5 30.Re1+–) 29.Rb4 Rc2 30.Nd4 Rd2 31.Re1 Re7 32.Bf3 Bf3 33.gf3 Rg7 34.Kf1 Kf7 35.Ne6 Rg6 36.Rf4 Rf6 37.Ng5 Kg6 38.Rf6 Kf6 39.Ne4 (39.Ne4 Kf7 40.Nd2+–) 1–0. Bonetti,Shane – guest1261, ICC, 2002.

7.Be2 Nbd7 8.0–0 h6 9.c4 Ne4 10.Nbd2 Nd2 11.Nd2 c6 (11...a6 12.a4+=) 12.bc6+/– Bc6 13.d5 ed5 14.cd5 (worse is 14.Bg7 Rg8 15.cd5 Bd5=) 14...Bd5 15.e4 Be6 16.Bg7 Rh7 (16...Rg8 17.Bh6 Bf6 18.Rc1+=) 17.Bd4+= Bg5 18.Bb5 a6 (18...Bf4!?+/–) 19.Bc6+– Rc8 20.Bb7 Rc7 21.Ba6 Nc5 (21...Bf6 22.Qa4 Ra7 23.Bf6 Qf6 24.Qc6+/–) 22.Bb5+– Kf8 23.Nf3 White intends e5 23...Bf6 (better is 23...Ke7+–) 24.Bf6 Qf6 25.Qd6 Qe7 26.e5 (26.Qb6 Ne4 27.Bd3 f5+–) 26...Ne4 (26...Rg7 27.Qb6 Bh3 28.Qh6 Bg2 29.Qh8 Rg8 30.Qg8 Kg8 31.Kg2+–) 27.Qb6 Rc2 (27...Bg4 28.Nd4 Qe5+–) 28.Bd3 Rc3 (28...Rc4 29.Rfe1 Rb4 30.Qa5+– (30.Be4?! Rb6 31.Bh7 Rb2+/–)) 29.Be4 Rg7 30.Qb8 (30.Rfc1 Rc1 31.Rc1 Kg8+–) 30...Rc8 31.Qd6 Qd6 (31...Rg4 32.Rfe1+–) 32.ed6 f5 (32...Rg4 33.Rfe1+–) 33.Nd4 Kf7 34.Bf5 Bf5 35.Nf5 Rg6 (35...Rg5 36.Ne7 Ra8 37.Rfe1+–) 36.Ne7 (36.Ne7 Rd8 37.Ng6 Kg6 38.Rad1+–) 1–0. DEFFM – Lookoutjoe, freechess.org, 2018.

6.Be2 c6

7.0–0 cb5 8.Bb5 a6 9.Be2 d6 10.c4 0–0 11.d4 Nbd7 12.Qb3 Ne4 13.Nfd2= Nd2 14.Nd2 Rb8 15.e4 Nf6 16.f3 d5 17.cd5 ed5 18.e5 Nd7 19.f4 b5 20.Qh3 f6 21.Bd3+/– h6?? 22.Qf5 Ne5 23.fe5 fe5 24.Qh7 1–0. pcmvr (2645) – mic (2205), net–chess.com, 2006.

7.c4 d5 8.0–0 0–0 9.d4 Qd7 (9...dc4 10.Bc4 cb5 (10...a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Bb5=) 11.Bb5 Nc6 12.Qa4 Nb4 13.a3 a6 14.ab4+=) 10.Ne5 (10.Ba3 dc4 (10...Ba3 11.Na3 dc4 12.Ne5 Qe7 13.Nec4 a6 14.Nb6=) 11.Be7 (11.Bc4 Ba3 12.Na3 Qe7 13.Nc2 cb5 14.Bb5=; 11.Ne5 Qd8 12.Be7 Qe7 13.a4 Rd8 14.Nc4=) 11...Qe7 12.Bc4 cb5 13.Bb5 Rc8 14.Nbd2=) 10...Qe8 (10...Qc7 11.cd5 (11.Ba3 dc4 12.Be7 Qe7 13.a4 Rd8 14.Nc4=) 11...Nd5 12.Nd2 f6 13.Nc6 Nc6 14.bc6=) 11.Nc3 (11.Qb3 Nfd7 12.cd5 Ne5 13.de5 cd5 14.Qc2=; 11.a4 dc4 12.Bc4 a6 13.Nc3 Nfd7 14.bc6+=) 11...Bb4 (11...dc4 12.a4= (12.Bc4 cb5 13.Bb5 Qd8 14.Qe2=) 12...a6 13.Bc4 cb5 14.ab5+=; 11...a6 12.cd5 Nd5 13.bc6 Nc6 14.Nd5+=) 12.Qb3 Bc3 (12...Bd6 13.cd5 ed5 (13...Nd5 14.Bf3+=) 14.bc6+=) 13.Bc3+/– Qc8 (13...dc4 14.Bc4+=) 14.a4 (14.Rfc1 dc4 15.Nc4 Rd8+/–) 14...dc4 (14...Nbd7 15.Rfc1+=) 15.Bc4 cb5 16.ab5 Ne4 (16...a5 17.ba6 Ba6 18.Bb4+= (worse is 18.Qb6 Bc4 19.Ra8 Bf1+=)) 17.Rfc1 Nd7 (17...Qd8 18.Bb4 Re8 19.Ra2+/–) 18.Bb4 (18.Be6 fe6 19.Qe6 Kh8 20.Bb4+– (20.Qd7 Nc3 21.Kf1 Kg8+=)) 18...Rd8?? (18...Ne5 19.Be2 Qd8 20.de5 Qh4=) 19.Be6+– Qb8 (19...Qc1 20.Rc1 Ne5 21.Rc7+–) 20.Nd7 Rd7 21.Bd7 1–0. Kraemer,W – Poeltelt,x, DDR–Jugend–Cp, 1959.

6.Be2 d6

7.0–0 0–0 8.c4 (--> 6.c4 0–0 7.Be2 d6 8.0–0).

7.0–0 0–0 8.Ne1 Nbd7 9.Bf3 d5 10.c4 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 c6 14.bc6 Bc6 15.cd5 ed5 16.Nc3 Nc5 17.Nc2 (17...Ne6 18.Ne2=). valpa – Rootsman, playchess.de, 2003.

7.d4 0–0 8.Nbd2 c5 9.a4 Nbd7 10.0–0 Qc7 11.c4 Rac8 12.Re1 cd4 13.ed4 d5 14.Rc1 Qf4 15.Qb3 dc4 16.Rc4 (better is 16.Bc4!? Qd6 17.Rc2=) 16...Bd5–/+ 17.Rec1 (17.Bd3 Bc4 18.Nc4 Nd5–/+) 17...Bc4 18.Rc4 (18.Nc4 Nd5–/+) 18...Ne4 19.Ne4 Qe4 20.Bf1 Qb7 21.Nd2 Nf6 22.g3 Nd5 23.Bg2 Qd7 (23...Bg5 24.f4 Bf6 25.Rc8 Rc8 26.f5–+) 24.h4 Rc4 25.Nc4 Bf6 26.Ne3 Ne3 27.Bc6? (better is 27.fe3 Qc7 28.Kf2–+) 27...Qd6 28.Ba3 (28.Qe3 Rd8–+) 28...Qd4 29.Bf8 (29.fe3 Qa1 30.Kg2–+) 29...Ng4 (29...Ng4 30.Qc2 Kf8–+; 29...Kf8?! 30.Qe3 Qa4 31.Kg2–+) 0–1. Chirpii,Alexandru – Nester,Ihor, Ceramica Corund Open, 2016.

7.d4 Nbd7 8.c4 0–0 9.a4 d5 10.0–0 dc4 11.Nbd2 c3 12.Bc3 Ne4 (12...c5 13.dc5 Nc5 14.a5=) 13.Ne4+= Be4 14.Qb3 Bd5 15.Qb2 Nf6 16.Rac1 Ne4 17.Ne5 Bd6 18.f4 Be5 19.de5 (worse is 19.fe5 Qg5 20.Be1 Qe3 21.Kh1 Rac8+=) 19...Nc3 20.Qc3 Rc8 21.Rfd1 Qe8 22.Bc4 (22.Bd3 c5+/–) 22...c6+= 23.Bd5 cd5 24.Qb4 Qd7 25.Rc3 Rc3 26.Qc3 Rc8 27.Qa3 (27.Qd3 Qe7=) 27...Qc7 28.Qd6 (28.Qb2!?=) 28...Qc2 29.Ra1 ½–½. Pies,Gerhard – Guelden,Ralf, Leverkusen op, 2004.

6.c4 0–0

7.a4 c6 8.Nc3 c5 9.Be2= d5 10.0–0? (10.cd5 Nd5 11.0–0 Bf6=) 10...dc4?? (better is 10...d4–+) 11.Bc4= Nd5 (11...Bd6 12.Qe2=) 12.Nd5 (12.d4 Nd7=) 12...Bd5 13.Be2 (13.Bd5 Qd5 14.d4 c4=) 13...Qc7 (13...a6 14.d4=) 14.Qc2 Nd7 (14...a6 15.Rfb1=) 15.d4 (15.Rfc1 Bf6+=) 15...c4 (15...Qb7 16.Bd3 f5 17.Bc4=) 16.Rac1 (16.e4 Bb7 17.Nd2 Qf4+/–) 16...Rac8 (16...Qb7+=) 17.Qb1 (17.e4 Bb7 18.Bc4 Nf6+/–) 17...Bf3 (better is 17...Qb7!?=) 18.Bf3 Bb4 (18...Bd6 19.h3+/–) 19.Bc6 Nb8 20.Rc4 Nc6 (20...Bd6 21.f4+/–) 21.bc6 (21.Rc6 Qb8+/–) 21...Ba5 (21...Bd6!?+=) 22.Qe4 (22.Rd1 Qd6+–) 22...Rfd8+/– 23.Qg4 Rd6 24.d5 (better is 24.Qg3+–) 24...f6? (24...f5 25.Qg3 Rd5 26.f4+=) 25.Bf6?? (better is 25.Ba3 f5 26.Bd6 Qd6 27.Qd4 ed5 28.Rd1 Rc6 29.Rc6 Qc6 30.Qd5 Qd5 31.Rd5+–) 25...ed5= 26.Rcc1?? (better is 26.Rf4 Rc6 27.Bb2+=) 26...Rf6–+ 27.Qh5 Rc6 (27...Rd8 28.Qg5–+) 28.Qd5 Kh8 29.Rcd1 (29.Rc6 Qc6 30.Qc6 Rc6–+) 29...h6 (29...Bc3 30.Qf5–+) 30.e4 (30.Qf5 Rd8–+) 30...Rc4 31.e5 (31.Qf5 Qc6–+) 31...Rc1! 32.e6 (32.Rc1 Qc1 Decoy) 32...Rd1 33.Rd1 Bb4 34.Qc5 0–1. GuestNYSY – GuestLSHV, freechess.org, 2017.

7.a4 d5 8.d4 c5 9.Be2 Nbd7 10.cd5 Nd5 11.0–0 cd4 12.Nd4 Qc7 (12...Rc8 13.e4 N5f6 14.f3=) 13.Nd2 Rfc8 14.Rc1 Nc5 15.N4f3 Qd8 16.Bd4 Nb4 (16...a6 17.ba6 Ba6 18.Ba6 Ra6 19.Rc4=) 17.Rc4 Ne4 18.Qb1 Nd2 19.Nd2 Rc4 20.Nc4 Rc8 21.Rd1 Qd5 (21...Bd5!? 22.Be5 Qf8=) 22.Bf3+/– ½–½. Kilpatrick,Robert – Sprott,George, corr ch–Scotland, 1990.

7.Qc2 Bf3 8.gf3 a6 9.Bd3=.

7.Qc2 h6 8.h4 (8.Be2 a6=) 8...d6 (better is 8...a6=+) 9.Ng5? (9.d4 a6=+) 9...Nbd7 (better is 9...hg5!? 10.Bf6 gf6 11.hg5 f5–+) 10.Nf3=+ Bf3 (10...c6 11.Nc3=+) 11.gf3= Rc8 (11...a6 12.Rg1=) 12.Nc3 (12.Qa4 Nc5 13.Qa3 a5=) 12...c6=+ 13.a4 (13.Rc1 cb5 14.cb5 d5=+) 13...cb5 (13...d5 14.d3=+) 14.ab5= Rc7 15.Rg1 (15.d4 d5=) 15...Re8 (15...Ne5!? 16.Be2 Nc4 17.Bc4 Rc4 18.Ra7 d5=+) 16.f4 (16.Qd3 Ne5 17.Qe2 Nc4–/+) 16...d5= 17.cd5 Nd5?? (17...ed5 18.Bg2=) 18.Qe4 (better is 18.Rg7! Kg7 19.Nd5 Bf6 20.Nc7+– (20.Qc7?! Bb2 21.Ra7 ed5 22.Qd7 Qd7 23.Rd7 Bf6+–)) 18...N5f6 (18...Nc3 19.dc3 Bh4 20.Bd3=) 19.Qg2 g6 20.Bd3 (20.Be2 Nc5+=) 20...Nf8 (20...Qa8=) 21.Ke2 (better is 21.Be2!?+=) 21...Rd7=+ 22.Ne4 Rd3 23.Nf6 (23.Bf6 Rb3 24.Bd4 Rb5 (< 24...Bh4 25.Rh1+/–) 25.Ra7 Nd7=) 23...Bf6–/+ 24.Bf6 Rd2 25.Kf3?? (better is 25.Ke1 Qd3 26.Qf1=+) 25...Qf6–+ 26.Ra7 Qf5 27.Qf1 (27.Qg4 Qb5 28.Kg2 Red8–+) 27...Qh5 (27...e5 28.Qc4–+) 28.Ke4 (28.Kg3–+) 28...Qd5 0–1. Goutioudis,Z – Kouloumbis,Gerasimos, Patras op 3rd, 2001.

7.Nc3 a6 8.a4 ab5 (8...Ne4 9.Be2 (9.d3 Nc3 10.Bc3 c5 11.Be2 Bf6 12.Qc2 Bc3 13.Qc3=) 9...Nc3 10.Bc3 d5 11.0–0 dc4 12.Bc4 Bd6 13.d3=; 8...c6 9.Be2 d5 10.cd5 Nd5 11.0–0 cb5 12.ab5 Nc3 13.Bc3=; 8...d5 A) 9.d4 A1) 9...c6 10.Qc2 (10.Be2 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Qa1=; 10.Bd3 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Qa1=; 10.Rc1 Bb4 11.cd5 Nd5 12.ba6 Na6 13.Bd3=; 10.Qb3 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1=) 10...Bb4 11.cd5 Nd5 12.ba6 Ba6 13.Ba6=; A2) 9...c5 10.dc5 (10.Rc1 ab5 11.ab5 cd4 12.Qd4 dc4 13.Qc4+=) 10...Bc5 11.cd5 Nd5 12.Rc1 Bb4 13.Qd4=; B) 9.Be2 c5 (9...dc4 10.Bc4 ab5 11.ab5 Ra1 12.Qa1 Nbd7 13.d4=) 10.cd5 (10.bc6 Nc6 11.cd5 Nd5 12.Rc1 Nc3 13.Bc3+=; 10.d4 dc4 11.dc5 Bc5 12.Bc4 Qc7 13.Bd3+=) 10...Nd5 11.0–0 Bf6 12.d4 ab5 13.ab5=; C) 9.Rc1 c6 10.d4 (10.cd5 Nd5 11.Nd5 Qd5 12.bc6 Bc6 13.Ne5+=) 10...Bb4 11.cd5 Nd5 12.ba6 Na6 13.Bd3=; D) 9.cd5 Nd5 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Nc3 13.Bc3=; 8...c5 9.Bd3 d5 10.0–0 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4+=) 9.ab5 Ra1 10.Qa1 c5 (10...Bf3 11.gf3 d5 12.Rg1 dc4 13.Bc4=) 11.Qa7 (11.Be2 d5 12.cd5 ed5 13.d4=) 11...Bf3 12.gf3 d5 13.Rg1 d4 14.Ne4 Ne4 15.fe4 Bf6 16.Qa1 (16.Qa3 de3 17.de3 Nd7+=) 16...Qd6+= 17.ed4 Bd4 (worse is 17...cd4 18.Ba3 Qf4 19.Bf8 Qe4 20.Kd1 Kf8 21.Qa3 Kg8 22.Qd3+=) 18.Rg3 Nd7 19.Bd4 cd4 20.Be2 e5 21.d3 (21.Bg4 Nf6 22.Bf5 Qb4+=) 21...Qb4–/+ 22.Kf1 Nc5 23.Qa7 (23.Qc1 Ne6 24.Kg1 Ra8–/+) 23...Qb1 24.Kg2 Qe1 25.Qa2 (25.Qb6? Ne6 26.Rf3 Qe2–+) 25...Ne6 26.Rf3 h6 27.h4 (27.h3 Nf4 28.Rf4 ef4–+) 27...Nf4 28.Rf4 ef4 29.Bf3 Qc3 30.Qe2 Ra8 31.e5 Ra1 32.Be4 Qc1 33.Kh3 Kf8 0–1. Michalek,Martin – Woelfelschneider,Peter, TT–08 ETC, 2003.

7.Nc3 c6 8.a4 d5 9.Be2 Nbd7 10.d4 c5 11.0–0 cd4 12.ed4 dc4 13.Bc4 Qc7 14.Bb3 Ng4 15.d5= Nc5 16.Ba2 Rfd8 17.Nd4?? Qh2# 0–1. pumpkin (2310) – johnb (2290), net–chess.com, 2010.

7.d3 Bb4 8.Bc3 Bc3 9.Nc3 d5 10.d4 Nbd7 11.Bd3 c5 12.bc6 Bc6 13.0–0 Ne4?? 14.Qc2 Ndf6 15.cd5+= Bd5?? 16.Nd5 ed5 17.Rfc1 Rc8= 18.Qb3 Ng4 19.Be4 de4 20.Nd2? Rc1 21.Rc1–/+ Qf6?? 22.Ne4+/– Qh4 23.h3+– (23.h3 Nh6 24.Nd6+–) 1–0. gtate (1945) – ramesis (2075), net–chess.com, 2005.

7.Bd3 d5 8.Qc2 (8.cd5 a6 (8...Bd5 9.Qc2 c5 10.Na3 Bf3 11.gf3 g6 12.Qc3 a6=; 8...Nd5 9.Qc2 f5+= 10.Bc4 a6 11.a4 ab5 12.ab5 Ra1=) 9.Qc2 ed5 10.0–0 ab5 11.Bb5 c6 12.Bd3 c5=) 8...h6 (8...dc4 9.Bc4 a6 10.Ng5+= g6 11.Nf3 ab5 12.Bb5 Be4+=) 9.Rg1 (9.cd5 Nd5 (9...ed5 10.0–0 c5 11.bc6 Nc6 12.Bf5 Nb4=; 9...Bd5 10.e4 Bb7 11.0–0 a6 12.Nc3 ab5=) 10.0–0 c6= 11.Rc1 a6 12.a4 ab5=) 9...c5 (9...a6 10.cd5 Nd5 11.a3 ab5 12.Bb5 c6+=) 10.Ne5 (10.Nc3 a6+= 11.cd5 ed5 12.Bf5 Re8+=) 10...Nbd7 (10...a6 11.Na3 Bd6 12.h3 Ne4–/+) 11.g4 (11.Nd7 Qd7 12.g4+= Ne4–/+; 11.Nc6 Bc6 12.bc6 Nb8–/+) 11...Ne4 (11...Ne5 12.Be5 Nd7 13.Bb2–/+; 11...dc4 12.Nc4 Nd5–/+) 12.Nd7 (12.Be4!? de4 13.Nc6 Bc6 14.bc6=; 12.cd5 Ng5+=) 12...Qd7+= 13.Nc3 (13.cd5 ed5 14.Nc3 Bh4 15.Ne4 de4–/+) 13...Ng5–/+ 14.0–0–0 (14.Rg3 dc4 15.Bc4 Nf3 16.Ke2 Ne5–/+) 14...Nf3 (14...d4 15.Ne4 Ne4 16.Be4–/+) 15.Rg3 d4 (15...dc4 16.Bh7 Kh8 17.d3–/+) 16.Ne4+= Ne5 (worse is 16...Nh2 17.g5 hg5 18.Rh1+=) 17.g5 Nd3 18.Qd3 Be4 19.Qe4 Bg5 20.Rdg1 (better is 20.ed4!? cd4 21.Qd4 Qd4 22.Bd4+=) 20...f5 21.Qe5 (21.Qg2 a6 22.Qc6 Qf7 23.ed4 cd4 24.Bd4 Rfc8 25.Qb6 Rc4 26.Kd1 Qd7–+) 21...Rf7 (21...Bf6!? 22.Qf4 Kh7–+) 22.ed4–/+ cd4 23.Qd4 (23.Kd1 a6 24.Ra3 d3–/+) 23...Qe7 (23...Qd4 24.Bd4 Rc8 25.Be5 Rc4 26.Kd1–/+) 24.Rd3 (24.Bc3 a6+=) 24...Bf6 (24...Qc7 25.Kb1–/+) 25.Qd6+= Bb2 (25...Rc8!? 26.Qe7 Rc4 (26...Re7? 27.Bf6 Rc4 28.Rc3 Rc3 29.dc3+–; 26...Be7?! 27.Rc3+=) 27.Kd1 Be7+= (27...Re7? 28.Bf6 Rec7 29.Bc3+–)) 26.Kb2= Qf6 27.Kb3 Rc8 28.Qd4 (28.Re1 Re8=) 28...Qd4 (28...e5 29.Qd6=) 29.Rd4 e5 30.Rd6 Kf8 31.Kb4 Rcc7 (31...Rfc7 32.d3=) 32.a4 (32.Re1 e4 33.d4 Rcd7 34.Rd7 Rd7+=) 32...Rfd7= 33.Rgg6 Kf7 34.a5 Rd6 (34...ba5 35.Ka5 Rd6 36.Rd6 Rc4 37.Rd7 Ke6 38.Ra7=) 35.Rd6+= ba5 36.Kc3 h5 (36...e4 37.d4+=) 37.d4+/– ed4 38.Kd4 h4 39.c5 (39.Ra6 g5+/–) 39...Re7 (39...Rb7!? 40.Kc4 Re7+=) 40.Ra6+/– g5 41.Ra5 g4 (41...Kf6 42.Ra6 Kf7 43.c6+–) 42.c6 (42.Kd5!? Kg6+–) 42...f4 43.Kd5 (better is 43.Ra3+/–) 43...Kf6? (better is 43...g3 44.hg3 fg3 45.fg3 hg3+/–) 44.Kd6+– Re2 1–0. Mroz,Antoni – Duda,J, corr Poland, 1985.

7.d4 Bb4 8.Nc3 Ne4 9.Qc2 d6 10.Bd3 f5 11.0–0 Bc3 12.Bc3 Nc3 13.Qc3 Nd7 (better is 13...Bf3 14.gf3 Qh4+=) 14.Ng5?? (better is 14.Be2=) 14...Qg5–+ 15.f3 (15.d5 ed5 16.cd5 Bd5–+) 15...Qe3 16.Kh1 Qg5 (16...e5 17.de5 Ne5 18.Rad1–+) 17.Rae1 Rae8 18.Rf2 (18.Qa3 Qf4 19.Qc3 e5–+) 18...Nf6 (18...e5!? 19.Qd2 Qh4 20.d5–+) 19.Rfe2 Nh5 20.Re6 (20.d5–+) 20...Re6 (better is 20...Nf4!? 21.R6e2 Re3 22.Qd2 Rd3 23.Qc1 Rf3 24.d5–+) 21.Re6 Nf4 (21...Nf4 22.Re2 Nd3–+) 0–1. Schaar,Joerg (1940) – Mohandoussaid,Malik (2175), CiF – Radko Krc Memorial, 2008.

7.d4 d6 8.Bd3= Nbd7 (8...a6 9.Nc3=) 9.Nbd2 (9.0–0 a6=) 9...Re8 (9...a6 10.ba6 Ra6 11.0–0=) 10.0–0 d5 (10...a6 11.Qc2=) 11.Qc2 h6 (11...dc4 12.Nc4 Bf3 13.gf3+=) 12.Ne5 (12.Rfc1 a6+=) 12...Ne5 13.de5 Nd7 14.f4 (14.Rfd1 Nc5+=) 14...Nc5= 15.Bh7 (15.Be2 a6=) 15...Kh8+= 16.f5 (16.cd5 Qd5 17.Nf3 g6 18.Bg6 fg6 19.Qg6 Bf8–/+) 16...Kh7 17.fe6 Kh8 18.ef7 Rf8 19.Qg6 Bg5 (19...Na4!? 20.Bd4 Bc5=) 20.Bd4+/– Qe7 (20...dc4 21.e6 Ne6 22.Qe6+=) 21.h4! Qe6 (21...Bh4 22.e6) 22.Qe6 Ne6 23.hg5 Ng5 24.c5 Rae8?? (better is 24...bc5 25.Bc5 Rf7 26.Rf7 Nf7+/–) 25.fe8Q (25.fe8Q Re8 26.c6+–; 25.fe8R Re8 26.c6 Bc8+–) 1–0. Roczniak,Jan – Gorczak,Wieslaw, corr Poland, 1985.

7.Be2 a5 8.0–0 d6 9.d4 Ne4 10.Nc3 f5 11.Qc2 Nd7 12.Ne4 Be4 13.Qa4+= Qe8 14.Nd2 Bb7 15.Bf3 Bf3 16.Nf3 Qh5 17.Rad1 Rf6 18.Kh1 Rh6 19.Qc2 g5 20.h3 g4 21.Ng1 Kf7 22.e4 Rg8 23.ef5 ef5 24.Qe2 Nf6 25.Rde1 Ne4 26.Bc1 gh3 27.Qh5 Rh5= 28.Nh3 Bh4 29.Nf4+= Rhg5 30.Kg1 Rg4 31.f3 Rf4 32.fe4+/– Rf1 33.Rf1+– Bf6 34.Rf5 Ke7 35.Bb2 Rg4 36.Rh5 Re4 37.Rh7 Kd8 38.Kf2 Bd4 39.Kf3 Re3 40.Kf4 Re2?? 41.Bd4+– Rg2 42.a3 Rc2 43.Ke4 Rc4 44.Kd5 Rc1 45.Rf7 Kc8 46.a4 Kb7 47.Rh7 Rc2 48.Rh4 c6? 49.bc6 Rc6 50.Rh6 Rc7 51.Rd6 Rh7 52.Rb6 Kc7 53.Rb5 Rh5 54.Be5 Kc8 55.Kc6 Kd8 56.Bf6 Ke8 57.Rh5 Kf7 1–0. Machete (2235) – IvoWantola (2050), ICC, 2003.

7.Be2 c5 8.0–0 d6 (8...a6 A) 9.d4 d5 (9...ab5 10.cb5 Bf3 11.Bf3 d5 12.dc5 bc5 13.Qc2=) 10.Nc3 (10.cd5 Nd5 11.dc5 Bc5 12.Nc3 Qe7 13.ba6=; 10.dc5 Bc5 11.cd5 Nd5 12.Nc3 Nc3 13.Bc3=) 10...dc4 11.Bc4 Nbd7 12.ba6 Ba6 13.Nb5=; B) 9.Nc3 ab5 (9...d5 10.d4 dc4 11.Bc4 cd4 12.Nd4 Qc7 13.Bd3=) 10.Nb5 d5 11.d3 Nc6 12.Qb3 Ra6 13.Ne5=; 8...d5 A) 9.cd5 A1) 9...ed5 10.d4 (10.Qc2 a6 11.Na3 Re8 12.Rfb1 d4 13.Qb3=; 10.a4 Re8 11.Qc2 a6 12.Rc1 ab5 13.Bb5=; 10.Na3 a6 11.Qc2 Re8 12.Rfb1 d4 13.Qb3=; 10.d3 a6 11.Nc3 Re8 12.ba6 Na6 13.a4=) 10...c4 11.Nc3 a6 12.a4 Bd6 13.Qc2=; A2) 9...Nd5 10.d4 a6 11.dc5 Bc5 12.Nc3 Qe7 13.ba6=; B) 9.d4 B1) 9...dc4 10.Bc4 (10.dc5 Bc5 11.Bc4 Qe7 12.Qe2 Rd8 13.Nc3=) 10...a6 11.dc5 Bc5 12.Qe2 Qe7 13.Nc3=; B2) 9...a6 10.dc5 (10.cd5 Nd5 11.dc5 Bc5 12.Qb3 Qe7 13.Rd1=) 10...Bc5 11.cd5 Nd5 12.Nc3 Qe7 13.Qb3=) 9.Nc3 (9.d4 Nbd7 (9...a6 10.Nc3 ab5 11.Nb5 Nc6 12.a3 Na7 13.a4=) 10.Nbd2 (10.Nc3 cd4 11.Qd4 Qc7 12.Rfd1 Rfc8 13.Qf4=) 10...a6 11.ba6 Ra6 12.d5 Qc7 13.de6=; 9.Qc2 a6 10.Nc3 d5 11.cd5 Nd5 12.d4 Nc3 13.Bc3=) 9...Nbd7 (9...a6 10.d4 cd4 11.Nd4 Qc7 12.Qd3 Nbd7 13.ba6=; 9...d5 10.d4 (10.cd5 ed5 11.d4 c4 12.Ne5 a6 13.ba6=) 10...a6 11.dc5 bc5 12.a4 dc4 13.Qc2+=) 10.a4 (10.Rb1 Ne5 11.a3 a6 12.d3 Ng6 13.Qb3=; 10.Qc2 a6 11.Rfb1 ab5 12.Nb5 d5 13.d3=; 10.a3 d5 11.cd5 Nd5 12.Qc2 a6 13.Nd5=; 10.d3 a6 11.Qd2 d5 12.Rfb1 dc4 13.dc4=) 10...Qc7 (10...a6 11.d3 ab5 12.ab5 Ra1 13.Qa1=) 11.Qb3 (11.Qc2 Ne5 12.Ne5 de5 13.d3=) 11...d5 (11...Ne5 12.Ne5 de5 13.a5=) 12.d3 (12.cd5 ed5 13.d4=) 12...dc4 (12...Bd6 13.cd5=) 13.dc4 (13.Qc4=) 13...Rad8 14.Rfd1 Ng4 15.h3 Bf3 16.hg4 Be2 17.Ne2 Bf6 18.Bf6 Nf6 19.f3 Rd1 20.Rd1 Rd8 21.Nf4 Rd1 22.Qd1 Qd7 (22...Qe7 23.Qd2+=) 23.Qd3 (23.Qd7 Nd7 24.Nd3 h6=) 23...Qd3 24.Nd3 Nd7 (24...Ne8 25.g5=) 25.Kf2 Kf8 (25...h6 26.e4=) 26.f4 Ke7 27.Kf3 f6 28.e4 Kd6 29.g3 g6 (29...e5 30.Ke2=) 30.Ne1 (30.g5 fg5 31.e5 Ke7 32.fg5 Kd8+/–) 30...Nf8 31.Ng2 g5 32.Ke3 Ng6 33.Kf3 Ke7 34.Ke3 ½–½. Kreuzer,Uwe – Schrepp, Verbandsliga Nordbad, 1983.

7.e4 Ne8 (7...Ne4 8.Be2–/+) 8.Ke2? (8.Bd3!?=) 8...h6 (better is 8...Be4!? 9.Nc3 Bb7–+) 9.d3 Bh4 (9...d5 10.Nbd2+=) 10.Nc3 a6 11.a4 d6 12.Nd4 (12.Nh4 Qh4 13.g3 Qe7=) 12...d5 13.Qc2? (better is 13.cd5!? ed5 14.Ke1+=) 13...e5 (better is 13...dc4!? 14.Nd1 ab5 15.ab5 Ra1 16.Ba1 Nd6–+) 14.Qc1 0–1. Fridl,M (1945) – Drmic,T (2240), 21st Bosnjaci Open, 2016.

7.Bf6 Bf6 8.d4 d5 9.cd5 Bd5 10.Nc3 Bb7 11.Be2 c5 12.0–0 cd4 13.Nd4 Nd7 14.Nc6 Bc6=+ 15.bc6 Ne5 16.Ne4 Nc6 17.Nf6 Qf6 18.Bf3 Rac8 19.Bc6 Rc6 20.Qd7 Rfc8 21.Qa7?? h5 22.h3 e5 23.a4 e4 24.a5 ba5 25.Qa5 Rc5 26.Qa4 Rc4 27.Qa5 R8c5 28.Qa8 Kh7 29.Rab1 Qg6 30.Rb8 Qg5 31.Rh8 Kg6 32.Re8 Rc1 33.Qe4+/– Qf5 34.Qf5 Kf5 35.Rc1 Rc1 36.Kh2 g5 37.Kg3 Rc2 38.e4 Kg6 39.Rg8 Kf6 40.Rh8 h4 41.Kf3 Ke5 42.Re8 Kf6 43.g3 Rc3 44.Kg4 hg3 45.fg3 Re3 46.h4 gh4 47.gh4 Kg7 48.h5 Re1 49.e5 Kh6 50.Rh8 Kg7 51.Kf5?? Kh8–+ 52.Kf6 Kg8 53.h6 Rh1 54.Kg5 Rh2 0–1. ludice (1690) – classos (1650), kurnik, 2011.

7.Nc3 c5

8.Be2 d5 9.d4 Nbd7 10.0–0 Qc7 11.Rc1 (11.cd5 Nd5 12.Nd5 Bd5=) 11...Rad8 (11...dc4 12.Bc4 cd4 13.Qd4 Bf3 14.gf3+=) 12.Qb3 (12.cd5 Nd5 13.Qd3 N7f6=) 12...Bd6 (12...cd4 13.Nd4 Nc5 14.Qc2=) 13.h3 (13.cd5 Nd5 14.Rfd1 cd4 15.Nd5 Bd5=) 13...Rfe8 (13...cd4 14.Nd4 Nc5 15.Qc2=) 14.Na4 (14.cd5 ed5 15.Qc2 c4=) 14...dc4 15.Qc4 Bd5 16.Qc2 Ne4 17.Bd3 f5 18.Bc4 Ndf6 19.dc5 Nc5?? (better is 19...bc5 20.Bf6 Nf6 21.Bd5 Nd5=) 20.Bf6+– gf6 21.Bd5 ed5 22.Qf5 Kg7 23.Rfd1 Qf7 24.Nc3 Bb8 (24...Be5 25.Nd4+–) 25.Nd5 Re6? (25...Be5 26.Qg4 (26.Ne5?! Re5 27.Qf6 Qf6 28.Nf6 Rd1 29.Rd1 Kf6=) 26...Qg6 27.Ne5 fe5 28.Qg6 Kg6 29.g4+–) 26.Nf4 (better is 26.Ng5 Qg8 27.Ne6 Qe6 28.Qe6 Ne6+–) 26...Red6 (26...Rd1 27.Rd1 Bf4 28.Qf4+–) 27.Rd4 Qd7 (27...Kf8 28.Rcd1+–) 28.Nh5 Kf8 29.Qd7 R8d7 30.Rcd1 (better is 30.Nf6!? Rf6 31.Rc5 bc5 32.Rd7 Rb6+–) 30...Ne4 31.Rd6 Rd6 32.Rc1 Kf7 33.Nd4 Rd5 34.g4 Kg6? (34...Be5+–) 35.Rc8 Be5 36.Rg8 Kf7 37.Rg7 Ke8 38.Rh7 Nc3 (38...Bd4 39.ed4 Rd4 40.Ra7+–) 39.Ng7 Kd8 40.Nc6 Kd7 41.Nf5 Ke8 42.Ra7 Nb5 (42...Kf8+–) 43.Ng7 Kf8 44.Ne6 Kg8 45.Rg7 (45.Rg7 Kh8 46.Ne7 Bh2 47.Kh2+–) 1–0. Matveenko,Yury (2135) – Khripunov,Alexander (1990), Voronezh Region–ch Seniors, 2008.

8.Be2 d5 9.cd5 ed5 10.d4 Nbd7 11.0–0 Bd6 12.h3 Re8 (12...c4 13.Nh4 Bb8 (13...Qb8 14.Nf5 Re8 15.Qc2 Bh2 16.Kh1 Bc7=; 13...Be7 14.Nf5 a6 15.ba6 Ra6 16.e4 de4=; 13...a6 14.Nf5 Bb8 15.a4 Qc7 16.g3 Re8=; 13...Re8 14.Nf5 Bb8 15.Ba3 Re6 16.Qc2 a6=; 13...Qc7 14.Nf5 Rfe8 15.Qc2 a6 16.a4 Bb4=; 13...g6 14.Nf3 Re8 15.a4 Qe7 16.Qc1 a6=) 14.Nf5 Re8 15.Ba3 a6 16.ba6 Ba6=) 13.Qc2 (13.Nh4 c4 14.Nf5 Bb8 15.Ba3 a6 16.ba6 Bc6=; 13.dc5 bc5 14.Rc1 Qe7 15.Qa4 Reb8 16.Rfd1 Ne5=) 13...Rc8 (13...c4 14.Nh4 a6 15.a4 Bf8 16.Rfc1 Ne4=) 14.Qf5 (14.Qa4 Bb8= 15.Rac1 c4 16.Ba3 Ne4=; 14.Rac1 Qe7 15.Qa4 Rc7 16.dc5 bc5=) 14...Qe7 15.a4 (15.Rfc1 Qe6 16.Bd3 c4=) 15...cd4 (15...Qe6 16.Qe6 fe6=) 16.Nd4 Ne5 (16...Qe5=) 17.Nf3 (17.Rac1 Nc4 18.Ba1 Be5=) 17...Rc7 (17...Nc4 18.Nd1+=) 18.Rfd1 (18.Rfc1 Nc4 19.Nd5 Bd5 20.Bf6 Ne3 21.Be7 Nf5 22.Bd6 Rc1 23.Rc1 Nd6+=) 18...Bc8 (18...Nc4 19.Bc4 dc4 20.a5+=) 19.Qb1 Be6 20.Nd4 Rec8 21.Na2 (21.Rc1!?=) 21...Ne4–/+ 22.Nf3 (22.Bd3 Nd3 23.Qd3 Qh4–+) 22...Nf3 23.Bf3 Nf2 24.Kf2 (better is 24.Rd2 Ne4! 25.Be4 de4 26.Qe4–+) 24...Rc2–+ 25.Kf1 (25.Kg1 Bg4!! 26.Bd5 (26.Bg4?? Qe3 27.Kh1 Qg3 28.Qc2 Qh2) 26...Qe3 27.Kh1–+) 25...Qh4 26.Be2 (26.Rd2 Rd2 27.Qe1 Qe1 28.Re1 Rb2 29.Nc1–+) 26...Bh3! 27.Nc3 (27.gh3 Qh3) 27...R8c3 (27...Bg2 28.Kg2 Qh2 29.Kf1 Bg3 30.Qc2 Qh1) 28.Bc3 (28.Qc2 Rc2 29.Rd4 Bg2 30.Kg2 Qh2 31.Kf1 Qe2 32.Kg1 Qg2) 28...Bg2! (28...Bg2 29.Kg2 Qh2 30.Kf1 Qe2 31.Kg1 Qg2) 0–1. Veer,Willem – Loheac,Ammoun, Luzern olm, 1982.

7.Nc3 d5

8.a4 a5 9.Qc2 (9.Rc1 c5 10.cd5 (10.d4 cd4 11.Qd4 dc4 12.Qc4 Nbd7 13.Be2=) 10...ed5 11.d4 c4 12.Be2 Nbd7 13.Qc2=) 9...c5 10.d3 (10.cd5 Nd5 11.Nd5 Bd5= 12.Bd3 h6 13.e4=) 10...Nbd7 (10...d4 11.Nb1 (11.Ne2+= de3 12.fe3 Ng4 13.Qd2–/+) 11...de3 12.fe3 Ng4 13.Qe2+=) 11.e4 (11.Be2 d4 (11...Re8= 12.0–0 Bd6 13.Rad1=) 12.ed4 cd4 13.Nd4=) 11...Qc7 (11...d4 12.Nb1 Ng4 13.Be2+=) 12.ed5 (12.Be2 d4 13.Nb1 Bd6+=) 12...ed5–/+ 13.0–0–0 (13.cd5!? Nd5 14.Be2–/+) 13...d4–+ 14.Ne2 Ng4 (14...Rfe8 15.Kb1–+) 15.Neg1–/+ Rae8 16.Kb1 Bf6 (16...Bd6 17.h3 Nge5 18.Be2–/+) 17.h3 Nge5 18.Be2 Ng6 19.Bc1 Nf4 20.Bf4 (20.Bf1 Re7–/+) 20...Qf4 21.Bf1 (21.g3 Qf5–/+) 21...Re6 22.h4 (22.g3 Qb8–/+ (22...Bf3?! 23.gf4 Bh1 24.Be2=)) 22...Rfe8 23.Rh3 (23.g3 Qb8 24.Rh2 R6e7–/+) 23...Bf3 (23...Qg4!? 24.Rg3 Qf5 25.Be2–+) 24.Nf3–/+ Ne5 25.Ne5 Re5 26.Rf3 (better is 26.g3!? Qf3 27.Qd2–/+) 26...Qh4–+ 27.Kb2 Qg4 28.Kb3 Qe6 (28...Bg5 29.Rg3 Qf5 30.Rh3–+) 29.g3 (29.Rh3 Qd6–+) 29...Bg5 30.Qb1 Bh6 31.Bg2 g5 32.g4 Qg4 33.Rg3 Qe2 34.f4 (34.Bc6 Qe1! (34...Qf2?! 35.Rg2 Qe3 36.Be8 Re8 37.Rh1–/+) 35.Re1 Re1 36.Qe1 Re1–+) 34...Re3 35.Re3 Re3 36.fg5 Bg5 37.Be4 h6 38.Rg1 Qd2 39.Rg2? (39.Qc2 Qc2 40.Kc2 Re2 41.Kb3–+) 39...Qb4 40.Ka2 Qa4 41.Kb2 Qb4 (41...Kf8 42.Rh2–+) 42.Ka2 0–1. De Visser,Arno – Dekker, 1988.

8.Qc2 c6 (8...dc4 A) 9.a4 a6 (9...Bd6 10.Bc4 a6 11.e4 ab5 12.ab5 Ra1 13.Ba1=; 9...Nd5 10.Bc4 Nb4 11.Qb1 Bf3 12.gf3 Nd7 13.Ne4=) 10.Bc4 Bd6 11.e4 ab5 12.ab5 Ra1 13.Ba1=; B) 9.Bc4 B1) 9...a6 10.d4 (10.a4= Bb4 11.0–0 Bf3 12.gf3 c5 13.Rfd1=) 10...ab5 11.Bb5 Bd6 12.e4 Bb4 13.Bd3=; B2) 9...Bf3 10.gf3 a6 11.a4 c6 12.Ne4 ab5 13.ab5=; 8...c5 9.cd5 ed5 10.Bd3 a6 11.0–0 d4 12.Ne4 Kh8 13.Nf6+=) 9.a4 (9.cd5 ed5 10.Be2 a6 11.bc6 Nc6 12.0–0 d4 13.Ne4+=) 9...a6 10.d3 (10.cd5 cd5 (10...Nd5 11.Bd3 Nf6 12.0–0 cb5 13.ab5=) 11.Be2 d4 12.Nd4 Bg2= 13.Rg1=; 10.d4 Bb4 11.cd5 Nd5 12.ba6 Ba6 13.Ba6=) 10...dc4 (10...ab5 11.ab5 Ra1 12.Ba1 dc4 13.dc4 cb5 14.cb5 Bf3 15.gf3+=) 11.dc4 cb5 (11...Bb4 12.Be2 cb5 13.cb5+=) 12.ab5 (12.cb5 Qc7 13.Bd3+=) 12...ab5 (12...Qc7 13.Bd3=) 13.cb5 (13.Ra8 Ba8 14.cb5 Bf3 15.gf3 Qc7+=) 13...Nbd7 (13...Ra1 14.Ba1 Bf3 15.gf3+=) 14.Be2 Ra1 15.Ba1 Qc7 16.0–0 Rc8 17.Qb2 Nc5 18.Nd4 Ne8 19.Bf3 Bf6 20.Bb7 Qb7 21.Qb1 (21.Rd1 Rd8=) 21...Bd4+= 22.ed4 Nd7 23.Ne4 Ndf6 24.Ng5 (better is 24.Nf6!? Nf6 25.Rc1+=) 24...Qd5–+ 25.h4 (25.Nf3 Nd6–+) 25...Nd6 26.Re1 Qb5 27.Qa2 (27.Qb5 Nb5 28.Rb1 Ra8–+) 27...Qa5 28.Qe2 (28.Qb1 Nc4–+) 28...Rc2! 29.Qe5 (29.Qc2 Qe1) 29...Ng4 (29...b5 30.Nf3 Qb6 31.Qe3–+) 30.Qa5 ba5 31.d5 (31.f3 Nf6–+) 31...ed5 32.f3 Nf6 33.Be5 (33.Nh3 Rc4–+) 33...Rc6 (33...Nc4 34.Bf6 gf6 35.Nh3–+) 34.Rb1 (34.Nh3 Nc4 35.Bf6 gf6–+) 34...h6 (34...Nd7!? 35.Bd6 Rd6 36.Ra1–+) 35.Bd6 hg5 36.hg5 Rd6 37.gf6 Ra6 38.Rb8 Kh7 39.fg7 Kg7 40.Rd8 a4 41.Rd5 a3 42.Rd1 a2 43.Ra1 Kf6 44.Kf2 Ke5 45.Ke3 0–1. De Visser,Arno – Klarenbeek, 1986.

8.d4 a6 9.cd5 Nd5 10.Qc2+=.

8.d4 dc4 9.Bc4= a6 10.0–0 ab5 11.Bb5 Nd5 (11...Ba6 12.Ba6 Na6 13.e4=) 12.a4 (12.Qe2 c6 13.Bd3 Ba6=) 12...Nd7 (12...Bd6 13.Nd5 Bd5 14.Bd3=) 13.Rc1 (13.Qe2 N7f6=) 13...N7f6 (13...Bd6 14.Bd3=) 14.Nd5 Nd5 (14...Bd5 15.Bc6 Bc6 16.Rc6=) 15.Ne5 Bd6 16.Nc6 (16.e4 Nf4 17.Qg4 g5+/–) 16...Qh4 Threatening mate: Qxh2 17.g3 Qh3 18.e4 Nf6 (18...Nf4 19.Qf3 Ng6 20.e5+=) 19.Qf3 (better is 19.Qe2 Ne8 20.Rfe1+=) 19...Ne8? (better is 19...Rfe8=) 20.e5+– Bb4 21.Ne7! Be7 The mate threat is Bxf3 22.Qb7 Rd8 23.Be8 Rfe8 (23...Rde8 24.Rc7 Rb8+–) 24.Rc7+– (24.Qc7?! Bg5 25.f4 Be7+/–) 24...Bf8 25.Qb6 Rb8 26.Rb7 (26.Qc6 Red8 27.Bc3 Qf5+–) 26...Rbc8 (26...Rb7 27.Qb7 Qg4 28.Ra1+–) 27.a5 h5 (27...Rc2 28.Rc1 Rc1 29.Bc1+–) 28.a6 h4 29.a7 Qg4?? (29...hg3 30.hg3 (30.fg3 Rc2 31.Rf2 Rf2 32.Kf2 Qh2 33.Kf3 Qh1 34.Ke2 Qg2 35.Kd1 Qf1 36.Kc2 Qe2 37.Kb3 Rc8=) 30...Ra8 31.Rb8+–) 30.Qb3 (better is 30.Rb8+–) 30...h3 (30...Ra8 31.Rb8 hg3 32.fg3+–) 31.f3 Qf5 (31...Qg5 32.f4 Qd8+–) 32.Rb8 Rb8 33.ab8Q (33.Qb8 Qc2 34.Rf2 Qd1 35.Rf1=) 33...Rb8+= 34.Qc3 Qg5 (34...Bb4 35.Qc7 Rf8 36.Qc6+=) 35.Qc2 (35.Rd1 Qd8+=) 35...Qe3 36.Qf2 Qb3 (36...Qd3 37.Bc1+=) 37.Bc1 Rc8 38.Qb2 Qd3 39.Qd2 Qc2 (39...Rc3 40.Qd3 Rd3 41.Bb2+=) 40.Qc2 Rc2 41.Be3 (41.Bg5 Rc3+=) 41...Rg2 42.Kh1 Ra2 (42...Rb2 43.Bc1 Rc2 44.Bg5+=) 43.Bf2 (43.f4 Re2 44.Bg1 Bb4+=) 43...Bb4 44.Kg1 Bc3 45.Rd1 (45.Rc1 Rd2=) 45...Kf8 (45...Kh7 46.Rc1=) 46.Be1 (46.Rc1 Bd2 47.Rc8 Ke7+=) 46...Rg2 47.Kh1 Be1 48.Re1 Rd2 49.Kg1 (49.Ra1 f6=) 49...Rd4 50.Re2 Rd3 (50...Ke7 51.Rc2=) 51.Kf2 Ke7 (51...Rc3 52.f4=) 52.g4 (52.Rb2 Rd7=) 52...g5 (52...f6 53.f4=) 53.Re3+= Rd2 (53...Rd1 54.Kg3+=) 54.Kg3 f5 (54...f6 55.ef6 Kf6 56.Kh3+=) 55.ef6 Kf6 56.Kh3 e5 (56...Rd1 57.Kg3+=) 57.Rc3 (57.Kg3 Rd1+/–) ½–½. Zylla,Johannes – Westphal, BSF–Vereinspokal, 1993.

8.d4 Nbd7 9.cd5 Nd5 10.Nd5 Bd5 11.Rc1 Bd6 (11...a6 12.ba6 Nb8 13.a3=) 12.Bd3 f5 13.a4 Rc8 14.0–0 Qf6 15.Bc4 Be4 16.g3 Qh6 17.Nd2 Bb7 18.Qb3 Rf6 19.d5 e5 20.f4 Rg6 (20...Rff8 21.Nf3 ef4 22.ef4+=) 21.Be5 (21.fe5 Be5 22.Be5 Ne5 23.Rf5 Ng4+/–) 21...Ne5 (21...Nc5 22.Qc3+/–) 22.fe5 Be5 23.Nf3 Bd6 24.Rf2?? (better is 24.Nd4!?+/–) 24...Re8 (24...Bg3!? 25.Rg2 Bd6–/+) 25.Re1 (25.Rc3 f4 26.ef4 Bc5+=) 25...Kh8 26.Qc3 Qh3 (26...Bg3 27.hg3 Rg3 28.Kf1–/+) 27.Bf1 (27.Ree2 h5 28.Rg2 Qg4=) 27...Qh6 (27...Bg3 28.hg3 Qg3 29.Bg2 Bd5 30.Kf1+=) 28.Qd3 (28.Bg2 Rf6 29.Nd4 Qh5+=) 28...Bc8 (28...f4 29.Nh4 Rg4–/+) 29.Nd4?? (better is 29.Ree2+=) 29...f4–+ 30.Nf5 (better is 30.Rc2–+) 30...Bf5 31.Qf5 fg3 (31...fe3?! 32.Rfe2–/+) 32.hg3 Rf6?? (better is 32...Rg3!? 33.Bg2 Rge3 34.Re3 Qe3 35.Kh1–+) 33.Qd7 (better is 33.Qh3 Rf2 34.Kf2–/+) 33...Ref8–+ (33...Re3?? 34.Qe8 Re8 35.Re8 Rf8 36.Rff8 Bf8 37.Rf8) 34.Rf6?? (34.Rf4 Bf4 35.gf4–+) 34...Qf6 (34...Rf6?! 35.Qg4=) 35.Rc1 Qf2 36.Kh1 Qg3 37.Qd6 Qd6 38.Bg2 (38.Rc4 Rf2 39.Rh4 Qg3 40.Rh7 Kh7 41.Bd3 Kh6 42.d6 Rh2) 38...h6 (38...Qh6 39.Kg1 Qe3 40.Kh1 Qc1 41.Kh2 Qg5 42.Be4 Rf2 43.Kh3 Rf4 44.d6 Rh4) 39.Rc6 (39.e4 Qa3 40.Rf1 Rf1 41.Bf1 Qa4–+) 39...Qe5 (39...Qg3 40.Rc2 Qe3 41.Rb2 Rf5 42.Rb4 Rh5 43.Rh4 Qe1 44.Kh2 Rh4 45.Bh3 Qf2 46.Kh1 Rh3) 40.e4 (40.Re6 Qh5 41.Kg1–+) 40...Rf2 41.Re6 (41.Rg6 Re2 42.Rg4 Qh5 43.Rh4 Qh4 44.Kg1 Qf2 45.Kh2 Qg2) 41...Qg5 (41...Qg5 42.Rh6 gh6 43.Bf1 Qc1 44.d6 Qf1; 41...Qg3 42.Re8 Kh7 43.Rh8 Kh8 44.d6 Qg2) 0–1. Grabmeier,Johannes (1850) – Ranzinger,Arthur, Niederbayernliga, 2008.

8.cd5 Nd5 9.Bc4 Nc3 10.Bc3 c5 11.bc6 Nc6 12.0–0 Rc8 13.a4 Bf6 14.Bf6 Qf6 15.Rc1 Ne5 (15...Rfd8 16.d4+=) 16.Ne5= Qe5 17.Qe2 Rc7 18.d4 Qd6 19.Bd3 Rfc8 20.Rc7 Rc7 21.Bb5 Qb4 22.h3 Qb3 23.Rd1 (23.Qg4 Qd5=) 23...Bd5 (23...a6 24.Bd3 Qa4–/+) 24.e4? (24.Qd2 Qc2=) 24...Bc4 (24...Be4!? 25.Re1 Bd5–/+) 25.Qh5 a6 26.Bc4 Qc4 27.Qe5 f6 (27...Qa4!? 28.Qc7 Qd1 29.Kh2 h6 30.Qb6 Qd2 31.Qd8 Kh7=) 28.Qd6+= Qc6 29.Qb4 Qe4 30.Qb6 Qc6 31.Qb3 Qc4 32.Qb8 Rc8 33.Qd6 Qc6 34.Qb4 Qc4 35.Qe1 Qd5 36.Qe2 Qc4 37.Qe3 Qd5 38.Rb1 Rc4 Attacking the isolated pawn on d4 39.Rb6 Rc6 (39...Qd4?? 40.Qe6 Kf8 41.Rb8 Rc8 42.Rc8 Qd8 43.Rd8) 40.Rb8 Kf7 41.Rb7 Kg8 42.Kh2 Qd6 43.f4 g5 44.Kg3?? (better is 44.d5 gf4 45.Qe6 Qe6 46.de6 Re6 47.Rb4=) 44...Rc3!! (44...Rc3 45.Kf2 Re3 46.Ke3 Qf4 47.Kd3 Qf1 48.Kc3 Qg2–+) 0–1. Mallmann,Bernd (1970) – Siering,Martin (1725), SVR–ch MAT–II, 2007. (=1.c4 Nf6 2.Nc3 b6 3.b4 Bb7 4.Bb2 e6 5.b5 Be7 6.Nf3 0–0 7.e3 d5)

8.cd5 Nd5 9.Nd5 Bd5=.

8.Be2 c5

9.cd5 ed5

10.Qa4 a6 11.Qf4 Bd6 12.Qh4 Nbd7 13.a4 h6 14.0–0 Qe7 15.ba6.

10.Qb3 A) 10...Nbd7 11.0–0 Bd6 12.Rfe1 Re8 13.Qc2 Qc7 14.h3 d4 15.Na4; B) 10...Bd6 11.0–0 a5 12.Qc2 Nbd7 13.h3 Qc7 14.Qf5 Rfe8 15.Rac1; C) 10...a5 11.h3 Bd6 12.Qa4 Nbd7 13.0–0 Re8 14.Rac1 Qc7 15.Rfe1; D) 10...a6 11.0–0 ab5 12.Nb5 Nc6 13.a4 Qd7 14.d3 h6 15.h3.

10.Qc2 A) 10...Qd6 11.0–0 Nbd7 12.d4 c4 13.h3 g6 14.Rfd1 Qc7 15.Ne5; B) 10...Nbd7 11.0–0 Bd6 12.Qf5 Re8 13.Rae1 Nf8 14.g3 Qd7 15.Qd7; C) 10...Bd6 11.0–0 Nbd7 12.Rfe1 Re8 13.Rac1 g6 14.h3 a6 15.Ra1; D) 10...a6 11.0–0 ab5 12.Nb5 Nc6 13.Ne5 Qc8 14.f3 Ne5 15.Be5.

10.Bd3 A) 10...c4 11.Bc2 a6 12.a4 ab5 13.Nb5 Nc6 14.0–0 Ne4 15.d3; B) 10...Nbd7 11.0–0 Bd6 12.g3 Qe7 13.Be2 h6 14.Qc2 Qe6 15.d4; C) 10...Bd6 11.0–0 Nbd7 12.Be2 Qe7 13.Qa4 Ne5 14.Ne5 Qe5 15.f4; D) 10...a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 Nbd7 14.0–0 Qc7 15.Qd1.

10.d4 a6 11.ba6 Na6 12.0–0 Nb4 13.Ne5 h6 14.f3 Nc6 15.Nb5.

10.d4 c4 11.0–0 a6 12.Ne5 ab5 13.Nb5 Nc6 14.a4 Ne4 15.Bf3.

10.d4 Qd6 11.Qc2 Nbd7 12.0–0 c4 13.Rfd1 a6 14.Ne5 Qe6 15.ba6.

10.d4 Nbd7 11.0–0 (11.dc5 bc5 12.0–0 Qc7 13.h3 Bd6 14.Qc2 c4 15.Nd4; 11.h3 c4 12.0–0 Qc7 13.Qc2 Rfe8 14.a3 Rad8 15.a4) 11...Qc7 (11...Bd6 12.dc5 bc5 13.Qc2 Qe7 14.Rad1 h6 15.Rfe1) 12.a4 (12.dc5 bc5 13.h3 Bd6 14.Qc2 d4 15.Nd1) 12...c4 13.Ba3 (13.h3 Rfe8 14.Qc2 Bb4 15.Na2) 13...Ba3 14.Ra3 Rfe8 (14...Qd6 15.Qa1) 15.Qc2 a5 16.ba6 Ra6 17.Rb1 Bc6 18.Rb4 Qd6 19.Qb2 h5 (19...Ne4 20.Ne4 Re4 21.Nd2=) 20.h3 Rea8 21.Nd2 b5 22.Nb5 Bb5 23.Rb5 Ra4 24.Ra4 Ra4 25.Nb1 Qa6 26.Nc3 Ra5 27.Ra5 Qa5 28.f3 (28.e4 Ne4 29.Ne4 de4 30.Bc4 e3 31.fe3 Qe1 32.Kh2 Qe3=) 28...h4 29.Bf1 (29.e4 g6=) 29...Nb6 30.e4 Na4 (30...de4 31.fe4 Nh5 32.Nd5 Nd5 33.ed5+=) 31.Qb8 Kh7 32.Na4 (32.Nd5 Nd5 33.Qe5 Qd2 34.ed5 c3 35.Qe4 g6=) 32...Qa4 = 33.Qc8 Qd1 34.Qf5 Kh8 35.Qc8 Kh7 36.Qf5 Kh8 37.Qc8 Ng8 38.ed5 Qd4 39.Kh1 c3 40.d6 Qd1 41.d7 ½–½. Sokolski,Alexey – Sakharov,Yuri N, URS–ch sf Kiev (14), 1957.

7.Nc3 d6

8.d4 Nbd7 9.Be2 c5 10.0–0 (10.bc6 Bc6 11.0–0 Qb8+=) 10...Ne4 11.d5 (11.Ne4!? Be4 12.Nd2=) 11...Nc3+= 12.Bc3 ed5 13.cd5 Nf6 14.Bf6 Bf6 15.Bc4? (better is 15.Rc1+=) 15...Ba1–+ 16.Qa1 Re8 17.a4 Bc8 18.h3 Bf5 19.Nd2 Qh4 20.Kh2 Re5 21.Qc3 Re7 22.Nf3 Qh5 23.Be2 f6 24.Ng1 Qh6 25.g4 (25.Nf3 Be4–+) 25...Be4 (25...Bd7 26.Qc4 f5 27.Kg2–+) 26.f3 (26.Bc4 Qh4–+) 26...Bd5 27.e4 Bb7 (27...Bf7 28.Bc4 d5 29.ed5–+) 28.Bc4 Kh8 (better is 28...d5 29.ed5 Kh8 30.Kg2–+) 29.Ne2 (29.Rd1–+) 29...d5! 30.ed5 (30.Bd5 Bd5 Combination; 30.ed5 Bd5) 30...Bd5! 31.Bd5 (31.Kg3 Re3 32.Qc1 Bc4 33.Qc4–+) 31...Re2 32.Kg3 g5 33.Ba8 (33.f4 Qh4 34.Kf3 Qh3 35.Ke2 Qc3 36.Ba8 Qc4 37.Ke1 gf4 38.Kf2–+) 33...Qh4 0–1. Baer,Cy (1895) – Eckhardt,Andreas (2105), RSS5E easy–49, 2008.

8.Be2 a6 9.0–0=.

8.Be2 c5 9.0–0 Nbd7 10.a4 d5 11.d4 dc4 12.Bc4 Rc8 13.d5 ed5 14.Nd5 Nd5 15.Bd5 Bd5 16.Qd5 Nf6 17.Qe5 Qc7 18.Rfd1 Rfe8 19.Qf5 Rcd8 20.Ne5 Rd1 21.Rd1 Bd6 22.Nc4 Be7 23.e4 Rd8 24.Rd8 Qd8 25.Ne3 h6 26.h3 Qd2 27.Qc8 Kh7 28.Qf5 Kg8 29.Qc8 ½–½. Mahony,Michael (1910) – Simon,Holger (1940), IECG, 2001.

8.Be2 Nbd7 9.0–0 a6 10.a4 (10.Nd4 ab5 11.cb5 Nc5=) 10...Nc5 (10...d5 11.cd5 Nd5 12.Nd5 Bd5 13.ba6=) 11.d3 (11.d4 Nce4=) 11...ab5 12.ab5 Ra1 13.Qa1 (13.Ba1 d5=) 13...Bf3 14.gf3 Qa8 (14...e5 15.Qd1=) 15.Qa8 (15.d4 Ncd7+=) 15...Ra8= 16.Ra1 (16.f4 d5=) 16...Ra1 17.Ba1 d5 18.cd5 Nd5 (18...ed5 19.Bb2=) 19.Nd5+= ed5 20.Be5 Bd6 21.Bd6 cd6 22.d4 Ne6 (22...Nb3 23.f4+=) 23.f4 Kf8 (23...f5 24.Kg2+=) 24.Kf1 (24.Bd3 g6+/–) 24...Ke7 (24...f5 25.Ke1+/–) 25.Ke1 (25.f5 Nc7+/–) 25...Kf6 (25...g6 26.h3+/–) 26.Bd3+/– Nc7 (26...g6 27.h3+/–) 27.Kd2 (27.f5 Kg5+/–) 27...h6 (27...g6 28.Ke2+/–) 28.h4 Ne8 (28...g6 29.Ke2+=) 29.Kc3 (29.f5 Ke7+/–) 29...g5 (29...g6 30.Bc2+=) 30.fg5+/– hg5 31.hg5 Kg5 32.f3 (32.Kc2 Nf6+/–) 32...Kh4 33.e4?? (better is 33.Kd2+/–) 33...Kg3+= 34.Be2 (34.ed5 Kf3 35.Bf5 Ng7–/+) 34...de4–/+ 35.fe4 Kf4 (35...Nf6 36.e5 de5 37.de5–/+) 36.Bd3 (36.Bh5!?=) 36...Nf6–/+ 37.Kc4 (37.Bc4 Ne4 38.Kd3 f5–/+) 37...Ke3 (37...Ne4 38.Kd5 f5 39.Bc2–+) 38.Bb1 (38.Bf1!?–/+) 38...Ne4–+ 39.Kd5?? (better is 39.Bc2–+) 39...Nc3 40.Kc6 (40.Kd6 Nb1 41.Kd5 Nc3 42.Ke5 f6 43.Kf6 Kd4–+) 40...Nb1 41.d5 (41.Kd6 Kd4 42.Kc6 Na3 43.Kb6 f5–+) 41...Ke4 (41...Nc3 42.Kb6 Ke4 43.Ka5 Nb5 44.Kb4–+) 42.Kb6 (42.Kd6 Nc3 43.Ke7 Kd5–+) 42...Nc3 43.Kc7 (43.Ka5 Nb5! 44.Kb4–+) 43...Nd5 44.Kd6 f5 (44...f5 45.Kc6 f4–+) 0–1. Skaug,Thorbjorn – Groot,Peter, Klubbmesterskap, 2002.

8.Be2 Nbd7 9.d4 a6 10.a4 (10.0–0 ab5 11.cb5 c5 12.bc6 Bc6 13.Qd3 b5 14.a3 Ra5=) 10...ab5 (10...e5 11.0–0= Re8 (11...ed4 12.Nd4 Nc5 13.Bf3 Bf3 14.Qf3 Nd3+=) 12.d5 Nc5 13.Ba3 ab5 14.ab5 Qd7+=; 10...c5 11.0–0 cd4 12.Nd4 Nc5 13.Bf3 Qd7 14.Nc6 Rfc8=) 11.ab5 Ra1 (11...c5 12.d5 Ra1 13.Ba1 Ng4 14.e4 Qc7=; 11...d5 12.Ra8 Qa8 13.cd5 Nd5 14.0–0 c5=) 12.Qa1 Qa8 (12...d5 13.0–0 dc4 14.Qa4 Ne8=) 13.0–0 (13.Qa8 Ra8 14.Bd3 Bf3=) 13...Re8 (13...d5 14.cd5 Nd5 15.Rc1 Qa1 16.Ra1=) 14.Qa8 (14.Qd1 c5+=) 14...Ra8= 15.Ra1 (15.Rd1 Kf8=) 15...Ra1 16.Ba1 Ne4 ½–½. De Visser,Arno – van der Griendt, 1998.

7.d4 a6

8.a4 c5 9.dc5 Bc5 10.Nc3 d6 11.Be2 Nbd7 12.0–0 Qc7 13.Nd4 Ne4 14.Nb3 Rfc8 15.Nc5 Nc3 (worse is 15...bc5 16.a5+/–) 16.Bc3 Nc5 17.Bb2 f5 18.Qe1 Qe7 19.Qb4 Qg5 20.g3 Qh6 21.a5 Qh3 22.f3 ba5 23.Ra5 ab5 24.Ra8 Ra8 25.cb5 Qh6 26.Qd2 Ra2 27.Bc4 Ra4 28.Qe2 d5 29.Bd3 Nd3 30.Qd3 Rb4 31.Bc3 Rb3 32.f4 Qh5 33.b6 h6 (33...Rb6?? 34.Qd4 Qf7 35.Qb6+–) 34.Rb1 Rb1 35.Qb1 d4 36.Bd4 Qf3 37.Qf1 Qh1 38.Kf2 Qh2 39.Ke1 Qg3 40.Kd2 Kf7 41.Qc4 Qg2 42.Kc3 Bc6 43.Qc5 Qg1 44.Qe5 Qe1 45.Kb2 Qb4 46.Kc1 Qc4 47.Kb2 Qb4 48.Kc1 Qa3 (48...Qe1!? 49.Kb2 Qb4=) 49.Bb2+/– Qd3 50.Qg7 Ke8 51.Qg6 (51.Qh6? Qe3 52.Kb1 Qe4 53.Kc1 Qe1 54.Kc2 Ba4 55.Kd3 Qd1 56.Ke3 Qb3 57.Kf2 Qb2 (57...Qb6?! 58.Kf1 Qb5 59.Kg1 Qb2 60.Qe6 Kd8 61.Qf5 Qd4 62.Kf1–+) 58.Kg3 Qb6 59.Qg6 Kd7 60.Qg7 Kc6 61.Qc3 Qc5 62.Qf3 Kd6 63.Qd3 Ke7–+) 51...Kd7 52.Qh7 Ke8 53.Qh8 (53.Qh6? Qe3 54.Kb1 Qe4 55.Kc1 Qe1 56.Kc2 Ba4 57.Kd3 Qd1 58.Ke3 Qb3 59.Kf2 Qb2 60.Kg3 Qb6 61.Qg6 Kd7 62.Qg7 Kc6–+) 53...Kd7 54.Qe5 Qc4 55.Bc3 Be4 56.Qg7 Kc8 57.Qd4 Qc6 58.Kd2 Kb7 59.Qg7 Kb6 60.Qh6 Qc4 61.Bd4 Kb5 62.Qg7 Qd3 63.Ke1 Qb1 64.Kf2 Qc2 65.Kg3 Qg2 66.Kh4 Qf2 67.Kg5 Qg3 68.Kf6 Qg7 69.Kg7 Kc6 70.Be5. Bonetti,Shane (2155) – uchax (2560), ICC, 2002.

8.a4 Ne4 9.Bd3=+.

8.Nc3+=.

8.a4 ab5

9.ab5 Bb4 10.Nc3 Ra1 11.Qa1 Be4=+.

9.ab5 Bb4 10.Nc3 Ne4 11.Qb3 Ra1 12.Ba1 Bc3 13.Bc3 Nc3 14.Qc3 Bf3 15.gf3 Qg5 16.f4 Qg6 17.Qd3 c6 18.Qg6 hg6 19.Kd2 cb5 20.cb5 Rc8 21.Bg2 d5 22.Ra1 Kf8 23.Ra8 Ke7 24.f3 Rd8 25.Ra4 Nd7 26.e4 Rh8 27.h3 Rh5 28.Bf1 Rh4 29.Ke3 Kd6 30.Ra8 Ke7 31.Ra7 Kd6 32.Ra8 Ke7 33.Ra7 ½–½. Bendig,Frank – Polklaeser,Guenther, corr BdF H 2070 D, 2000.

9.cb5 c5 10.Be2 d5 11.0–0 c4 12.Nc3 Nbd7 13.Rc1 Bd6 14.h3 Qe7=+ 15.Nh4 h6 16.Nf3 Rfd8 17.Qd2 Nf8 18.Ne5 Qc7 19.f4 Ng6 20.Ng6= fg6 21.Qc2 Kh7 22.Bf3 Qe7 23.Qe2 Bb4 24.Qc2 Rf8 25.Rf2 Ra7 26.Rff1 Rfa8 27.Ra1 Ra5 28.Rfe1 Qf7 29.Rf1 Qd7 30.Rfd1 Qc7 31.Rdc1 Qd6 32.Rf1 R5a7 33.Rf2 Qd7 34.Rff1 Qe7 35.Rfe1 Ra5 36.Rf1 R8a7 37.g4 Ra8 38.g5 Nd7 39.gh6 gh6=+ 40.Kh1 Nf6 41.Ne2 R5a7 42.Ng3 Rc8 43.Ne2 Qd7 44.Rg1 Rg8 45.Rg3 Qf7 46.Rag1 Raa8 47.R3g2 Raf8 48.Ng3 Rg7 49.Nf1 Rc8 50.Bc3= Bc3 51.Qc3 Ra8 52.Qb4 Kh8 53.Ng3 Ra7 54.Ne2 Ra5 55.Ra1 Rg8 56.Ng3 Rga8=+ 57.Rga2 Rf8 58.Qd6 Nd7 59.Ne2 Rd8 60.Qc7 Rb8 61.Ng3 Qg7 62.Nf1 Qe7 63.Nh2 Qf7 64.Bd1 Qg7 65.Bc2= Bc8 66.Nf3 Raa8 67.Rg1 Nf8 68.Qg7+= Kg7 69.Ne5 Kh7 70.Ng6 Ng6 71.Rg6 Kh8 72.Bb1 h5 73.Rag2 Kh7 74.Re6 Kh8 75.Rh6# 1–0. SuperForte – REXChess, 1994.

9.cb5 Ne4 10.Nc3=+.

7.d4 c5

8.dc5 Bc5 9.Nc3 d6 10.Bd3 Nbd7 11.0–0 Rc8 (11...Qc7 12.Na4=) 12.Rc1 (12.Na4 Qc7=) 12...Ne5 13.Na4 (13.Ne5!? de5 14.Qc2=) 13...Nf3+= (13...Nf3 14.gf3 Nd7+=). Borrmann,Fritz – Carlsson,David, CiF, 1993.

8.dc5 Bc5 9.Bd3 d5 10.0–0 dc4 11.Bc4 Qc8 12.Bf6 gf6 13.Nh4 Nd7 14.Qg4+= Kh8 15.Bd3 f5 16.Bf5?? Nf6?? 17.Qg5= Be7 18.Bd3 Qc5 19.Qc5 Bc5 20.Nc3 Rad8 21.Rad1 Rg8 22.a4?? Be7?? 23.Rfe1? Nd5 24.Nd5–/+ Bd5 25.e4=+ Bh4 26.ed5+= ½–½. vidyashankarh (2055) – kostaspetidis (2320), net–chess.com, 2003.

8.Bd3 d5=.

8.Be2 d6 9.dc5 dc5 10.Nbd2 (10.0–0 a6=) 10...Nbd7 (10...a6 11.0–0=) 11.Qc2 Qc7 (11...Bd6 12.0–0=) 12.0–0 Rfd8 13.a4 (13.Rfd1 a6=) 13...a6 14.Bc3 (14.ba6 Ra6 15.Rfd1 Bd6=) 14...ab5 (14...e5 15.Rfd1=+) 15.ab5= e5 16.Ra8 Ra8 17.e4 h6 (17...Ra7 18.Rd1=) 18.Rd1 Rd8 19.Ra1 Qd6 20.Nh4 g6 (20...Bf8 21.Nf5 Qc7 22.Qd3+=) 21.Ra7 Qc7 (21...Qb8 22.Ra2=) 22.Nhf3 Be4 23.Rc7 Bc2 24.Ne5 Bd6 25.Nd7 Nd7 26.Rb7 Be5 27.Be5 Ne5 28.Nf3 Bd1 (28...Nc4 29.Bc4 Rd1 30.Bf1 Bd3–/+) 29.Ne5+/– Be2 30.h3 Bd3? (better is 30...f6 31.Nd7 Rd7 32.Rd7 Bc4+/–) 31.Nf7+– (31.Rf7?! Bc4 32.Re7 Rd1 33.Kh2 Bb5+=; 31.Rb6?! Bb1+–; < 31.Nd3 Rd3 32.Rb6 Rc3+=) 31...Rd4 32.Ne5 Bc4 33.Rb6 (33...g5 34.Nc4 Rc4 35.Rh6+–; 33.Nc4?! Rc4 34.Rb6 Rc1 35.Kh2 Kf7+/–) 1–0. Bendig,Frank – Friberger,Torbjoern, corr 3GMM–36, 1996.

7.d4 d5

8.Nc3 a6 9.Rc1=+.

8.Nc3 a6 9.cd5 Nd5 10.Bd3=+.

8.Nbd2 a6 9.ba6 Ba6 10.Ne5+=.

8.Nbd2 c5 9.Bd3= Nbd7 10.0–0 Ne4 (10...cd4 11.Bd4 Nc5 12.Bb1=) 11.Qc2 Ndf6 12.Rac1 a6 13.ba6 Ba6 (13...Ra6!? 14.a3 Nd2 15.Qd2 dc4 16.Bc4 Ra7+=) 14.Ne4+/– de4 15.Be4 Bc4 (15...Ne4 16.Qe4 Bf6 17.Rfd1+/–) 16.Bh7! (16.Qc4?! Ne4 17.dc5 Nc5=) 16...Nh7 17.Qc4 Qd5 18.a4 Ra5 (18...Qd7 19.Ra1+/–) 19.dc5 Qc4 20.Rc4 Bc5 21.Bc3 Ra6 22.h4 Rfa8 23.Ra1 Be7 24.Rb1 (24.h5 b5 25.Rg4 Nf6+=) 24...Bc5 (24...Ra4!? 25.Ra4 Ra4 26.Rb6 Nf6+/–) 25.a5+/– Nf8 (25...Nf6 26.ab6 Rb6 27.Rb6 Bb6 28.Bf6 gf6 29.Kh2+–) 26.ab6 (26.Ne5 Rd8+–) 26...Rb6 27.Rb6 Bb6 28.h5 Rd8 (28...Ra2 29.Rc8 Rc2 30.Ne5+/–) 29.g4 Rd7 ½–½. Nebe,Lutz – Seifert,J, corr SOK–91–69, 1991.

8.Nbd2 Nbd7 9.Be2 c5 10.0–0 (--> 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).

8.Nbd2 Nbd7 9.Be2 c5 10.a4 cd4 11.ed4 (11.Nd4 Qc7 12.Rc1 Nc5+=) 11...dc4 (11...Rc8 12.Rc1+=) 12.Bc4 Rc8 (12...Qc7 13.0–0+=) 13.Qb3 (13.Rc1 Nd5+=) 13...Nd5 (13...Ne4 14.0–0+=) 14.0–0 Qc7 (14...Nf4 15.Rfe1+=) 15.Rac1 (15.g3 N7f6=) 15...Qf4 16.Ba3 Ba3 (16...N7f6 17.Rfe1+=) 17.Qa3 N7f6 (17...Rfd8 18.Rfe1=) 18.a5 Qg4 (18...g6 19.a6 Ba8 20.Rfe1=) 19.h3 Qh5 20.ab6 (20.a6!? Ba8 21.Bd3=) 20...ab6= 21.Qd6 (21.Bd5 Qd5 (worse is 21...ed5 22.Qa7 Rc1 23.Rc1+/–; 21...Nd5 22.Rc8 Bc8 23.Qd6+=) 22.Rfe1 Rc1 23.Rc1 Qb5+=) 21...Rfd8+= 22.Qe5 Qh6 (better is 22...Qg6+=) 23.Bd3? (better is 23.Ng5!?=) 23...Nf4–/+ 24.Bc4 (better is 24.Rc8 Rc8 25.Bc4–/+) 24...N4d5 (better is 24...Bf3!? 25.Nf3 Nd3 26.Bd3 Rc1–+) 25.Bd3+= Nf4 26.Bc4 N6d5?? (26...Bf3 27.Nf3 Nd3 28.Bd3 Rc1 29.Ng5–+) 27.Qg5? (better is 27.Bd5 Bd5 28.Rc8 Rc8 29.Ra1+=) 27...Qg5–+ 28.Ng5 Ne7 29.g3 Rd4 (29...h6 30.gf4 hg5 31.Nb3 gf4 32.Bd3–+) 30.gf4–/+ Rd2 31.Ne6 h6 (better is 31...fe6 32.Be6 Kf8 33.Bc8 Bc8–/+) 32.Rfe1? (better is 32.Rcd1!? Rc2 33.Bd3+=) 32...Nf5 (better is 32...Ng6!? 33.Kf1–+) 33.Bb3 Rc1 (33...Nh4 34.Rc8 Bc8 35.Ng5–+) 34.Rc1–/+ Rd3 (34...fe6?! 35.Be6 Kf8 36.Bf5=) 35.Bc2?? (35.Bc4 Rh3 36.Bd5 fe6 (36...Bd5?! 37.Rc8 Kh7 38.Nf8 Kg8 39.Ne6 Kh7 40.Nf8 Kh8 41.Ne6 Kh7=) 37.Bb7 Nd4–/+) 35...Rh3 (better is 35...Rc3 36.Nd8 Be4 37.Be4 Rc1 38.Kg2 Rc5–+) 36.Kf1?? (better is 36.Be4–/+) 36...Rh1–+ 37.Ke2 Rc1 38.Bf5 fe6 39.Be6 Kf8 0–1. Levin,Anatoly – Aveskulov,Valeriy (2425), Internet Section, 2004.

8.cd5 Bd5 9.Nc3 a6=.

8.cd5 Nd5 9.Nbd2 a6+=.

8.cd5 Nd5 9.e4 Nf6=+.

8.Be2 dc4 9.Bc4 Bb4 (9...a6 10.0–0+=) 10.Nbd2 (10.Bc3 Bd6+=) 10...Ne4 (10...a6 11.ba6 Ba6 12.0–0=) 11.0–0 Nd7 (better is 11...Nd2!? 12.Nd2 a6=) 12.Ne4+/– Be4 13.Bd3 White is in command (13.d5 ed5 14.Bd5 Bd5 15.Qd5 Bd6+/–) 13...Bd3+= 14.Qd3 Nf6 (14...a6 15.a4+=) 15.Ne5 Qd5 16.f3 Rfe8 17.e4 Qb7 18.Nc6 Bf8 (18...Be7 19.Rfc1+/–) 19.d5 Bc5 (19...Nh5 20.f4+/–) 20.Kh1 ed5 (20...Nh5 21.f4+/–) 21.e5 (21.Bf6 gf6 22.Qd5 Qc8+/–) 21...Nh5 (21...Nd7!?+/–) 22.Qd5 Kf8 23.f4 (23.f4 a6 24.a4 ab5 25.ab5 Ra1 26.Ba1+– (26.Ra1?! Nf4 27.Qf3 Ng6+/–)) 1–0. Bendig,Frank (2025) – Viswanathan,Kartik (2075), IECG, 2001.

8.Nc3 Nbd7

9.Bd3 dc4 10.Bc4 a6 11.a4=.

9.Bd3 dc4 10.Bc4 c6 11.bc6 Bc6 12.0–0=.

9.Bd3 c5 10.bc6 Bc6 11.0–0 (11.cd5 Nd5 12.Nd5 Bd5= (< 12...ed5 13.Bh7 Kh7 14.Qc2 Kg8 15.Qc6+/–)) 11...dc4 12.Bc4 Nd5 (12...Rc8 13.Ba6 Rb8 14.Nb5=) 13.Ne2 (13.Nd5 Bd5 14.Bd5 ed5=) 13...N7f6 14.Ne5 Bb7 15.Ng3 a6 (15...Rc8 16.e4 Nf4 17.Qf3=) 16.Rc1 (16.e4 b5 17.ed5 bc4 18.de6 fe6=) 16...b5 17.Bd3 (17.Bb3 Rc8=) 17...Nb4 (17...Qa5 18.Qb3=) 18.Bb1 Rc8 (18...Bd6 19.e4 Qe8 20.Qf3=) 19.Rc8 Qc8 20.a3 (20.Qe2 Qa8 21.Rc1 Bg2+=) 20...Nc6 21.Nf3 (21.Ng4 Ng4 22.Qg4 f5=) 21...Rd8 (21...Na5 22.Qe2=) 22.Qd3 (22.Qc2 Na7=) 22...e5 (22...Na5 23.Rc1 Nc4 24.Ne5=) 23.Rc1 (23.Ne4 g6=) 23...ed4 24.Nf5 de3?? (better is 24...Bf8=) 25.Ne7+– Ne7 26.Rc8 (26...Rc8 27.Qe3+–) 1–0. Wall,Bill – Oregon, Internet, 2003.

9.Bd3 c5 10.cd5 ed5 11.dc5 Nc5 12.Be2 Rc8 13.0–0 Nce4 14.Ne4 Ne4 15.Qa4+= Ba8 16.Rac1+/– Qd7 17.Ne5 Qb7 18.Nc6 Bc5 19.Na7 Rc7 20.Nc6+– Rc6 21.bc6 Qc6 22.Qc6 Bc6 23.Bd4 Ra8 24.f3 Ra2 25.fe4 Re2 26.Bc5 (26.Bc5 bc5 27.Rc5+–) 1–0. wiking – niemand, internet, 2010.

9.Bd3 c5 10.cd5 Nd5 11.Nd5 Bd5=.

9.Bd3 Rc8 10.Qa4 (10.cd5 Nd5 11.Nd5 Bd5=) 10...c5 11.cd5 (11.Qa7 Qc7 12.Qa4 cd4 13.Nd4 Nc5–/+) 11...cd4 (11...Nd5 A) 12.Qa7 cd4 13.ed4 Nf4 (13...Nc3?! 14.Qb7 Rc7 15.Qa6=) 14.Bh7 Kh7 15.Qb7 Nd3 16.Ke2 Nb2–+; B) 12.Rd1=) 12.Qd4+= (12.Nd4 Nc5 13.Qc2 Nd3 14.Qd3 Nd5 15.Nd5 Qd5–/+ (< 15...ed5 16.0–0+=)) 12...Nc5 13.Rd1 (13.Bc2 Bd5 14.Nd5 Qd5 15.Qd5 Nd5=) 13...Nd3= 14.Rd3 ed5 15.Rd2 Re8 16.0–0 Rc4 17.Qd3 Qc7 18.Rc1 Bd6 19.h3 Rd8 20.Rdc2 Rc8 (20...Qd7 21.Nd5 Bd5 22.Rc4 Bf3 23.Bf6 gf6 24.Rd4+–) 21.Nd2+/– Rc5 22.Ba3 Bh2 23.Kf1 Ne4 (better is 23...Bd6!?+/–) 24.Bc5+– Nf2 25.Kf2 Qg3 26.Kf1 bc5 27.Nf3 d4 28.Ne2 Qd6 29.ed4 Bf3 30.Qf3 (30...Qe6 31.dc5+–) 1–0. Behrmann,Klaus – Cas, compuserve, 1997.

9.cd5 ed5 10.Bd3 a6=.

7.Be2 a6

8.0–0= ab5 9.cb5 c5 10.bc6 (10.d4 d5=) 10...dc6 11.d4 Qc7 (11...Ba6 12.Nc3=) 12.Nbd2 Nbd7 13.Qc2 c5 14.Rfc1 Bd6 (14...Rfc8 15.a4=) 15.dc5 (15.e4 Be7=) 15...Rfc8 16.Qb1 (16.Nc4 Bc5 (worse is 16...Nc5 17.Bf6 gf6 18.Qb2+/–) 17.Nce5 Ne5 18.Be5 Qe7=) 16...Bc5 (16...bc5 17.Qc2=) 17.a4 Qd8 18.Ng5 (18.Bd3 Bc6=) 18...Be7 (18...Bc6 19.Bh5 g6 20.Bd1=) 19.Rc8 Qc8 20.Bd3 h6 21.Nge4 Ne4 22.Ne4 Qc6 23.Bb5 Qd5 (23...Qe4 24.Qe4 Be4 25.Bd7=) 24.Qd3 (24.f3 Nc5+=) 24...Qd3 (24...Qe4 25.Qe4 Be4 26.Bd7=) 25.Bd3= Bc6 26.Bb5 Be4 27.Bd7 Bc5 (27...Rd8 28.Bb5=) 28.Bb5 g5 (28...Rd8 29.Bc3=) 29.Rd1 (29.Rc1 Bd5=) 29...h5 (29...Bc2 30.Rc1 Bb3 31.Bf6=) 30.Bf6 g4 31.Rd7 Bc2 32.Rd2 Be4 (32...Bb3 33.h3=) 33.Rd7 Bd5 34.h3 Bb3 ½–½. Schulz,Hans_Juergen – Woelfelschneider,Peter, TT–17.02 ETC, 2005.

8.0–0 ab5 9.cb5 c6 10.a4 cb5 11.ab5 Ra1 12.Ba1 d6 13.Nc3 Nbd7 (13...Qc7 A) 14.Qb3 Rc8 (14...Bf3 15.Bf3 d5 16.Rc1 Nbd7 17.Bb2 Qb8=) 15.Rc1 Qd7 16.Bb2 Nd5 17.Qa4 Bf6=; B) 14.Qa4 d5 (14...Rc8 15.Rc1 Nbd7 16.d4 Qb8 17.Bb2 Bf3=; 14...Nbd7 15.Rc1 Rc8 16.Qd1 Qc5 17.d4 Qa3=; 14...e5 15.Rc1 Nbd7 16.Na2 Nc5 17.d4 Ra8=) 15.Rc1 Nbd7 16.d4 Ra8 17.Qc2 Ne4=; C) 14.Qc2 Rc8 (14...Nbd7 15.Rc1 Rc8 16.Qd1 Qd8 17.d3 e5=; 14...Bf3 15.Bf3 d5 16.Rc1 Rc8 17.Qb1 Nbd7=) 15.Rc1 Nbd7 16.Qd1 Qc5 17.Rc2 Qf5=; D) 14.Qb1 Nbd7 (14...Rc8 15.Rc1 Qd8 16.d4 Rc7 17.Bb2 Qc8=; 14...d5 15.Rc1 Qd6 16.Na2 Nbd7 17.Bc3 Qb8+=) 15.Rc1 Rc8 16.Bb2 Qd8 17.d4 Bf3=; 13...Qd7 A) 14.d4 Rc8 (14...Nd5 15.Qb1 f5 16.Rc1 Rc8 17.Nd5 Rc1=; 14...Bf3 15.Bf3 d5 16.Qd3 Bd6 17.Rc1 Rc8=; 14...Re8 15.Qd3 Rc8 16.Nd2 d5 17.Bb2 Bd6=; 14...Rd8 15.Bd3 Rc8 16.Bb2 Nd5 17.Nd5 Bd5=; 14...Ne4 15.Qd3 Nc3 16.Bc3 f5 17.Nd2 Rc8+=) 15.Qd3 Nd5 16.Rc1 Nb4 17.Qb1 Bf3=; B) 14.Qc2 Rc8 15.Qd3 Qc7 16.Bb2 e5 17.Qf5 h6=; C) 14.Qb1 Rc8 15.Bb2 Qd8 16.Rc1 Nbd7 17.d4 Bf3=) 14.Nd4 (14.Bb2 Qc7 15.d4 Bf3 16.Bf3 d5 17.Qd3 Bd6=; 14.d4 Qa8 (14...Bf3 15.Bf3 d5 16.Qd3 Qc7 17.Rc1 Bd6=; 14...Nd5 15.Qd3 N7f6 16.Nd5 Nd5 17.Bb2 Qd7=; 14...Qb8 15.Qd3 Rc8 16.Bb2 Bf3 17.Bf3 d5=) 15.Bb2 Ne4 16.Qd3 Nc3 17.Qc3 Rc8=) 14...Nc5 (14...Qc7 15.Qc2= Rc8 16.Rc1 Ne5 17.Qd1 Qd7=) 15.Nc6 Bc6 (15...Qd7 16.d4 Nce4 17.Ne4 Ne4 18.d5+=) 16.bc6+= e5 (16...d5 17.Nb5+= Ne8+=) 17.d4+/– ed4 (17...Ne6+/–) 18.ed4 Nfe4?? (18...Nce4 19.Ne4 Ne4 20.f3+/–) 19.Ne4 (better is 19.dc5 Nc3 20.Bc3 bc5 21.Qd5+–) 19...Ne4+/– 20.f3 Nf6 21.d5 Ne8 (21...b5 22.Qd4+/–) 22.Bd4 Bf6 23.Qa4 (23.Be3 Qb8+/–) 23...Bd4 24.Qd4 Nc7 25.Rb1 (25.Qb6 Nd5 26.Qd8 Rd8+/–) 25...Qe7+= 26.Bf1 Re8 27.Rb6 Qe5? (better is 27...Nd5 28.Rb7 Nc7+=) 28.Qe5+– Re5 (28...de5?? 29.d6 Nd5 30.Rb7+–) 29.Rb8 Re8 30.Rb7 Rc8 (30...Re7 31.Kf2+–) 31.Bc4 g6 (31...Kf8 32.Kf2+–) 32.g4 Kf8 33.Kf2 f6 (33...h5 34.g5+–) 34.Ke3 (34.Ra7 h6+–) 34...h6 (34...Ke7 35.Kd4+–) 35.h4 (35.Kd4 Ke7+–) 35...Ke8 (35...Ke7 36.Kf4 g5 37.hg5 fg5 38.Kf5+–) 36.Kd4 (36.h5 gh5 37.gh5 Kd8+–) 36...Kd8 37.Bd3 g5 38.hg5 (38.h5 Ra8+–) 38...hg5 (38...fg5 39.Rb1+–) 39.Rb1 Ra8 40.Rb4 (40.Be4 Ra4 41.Kc3 Ra5 42.Rb8 Ke7+–) 40...Ke7 41.Rb7 (41.Bc4 Kd8+–) 41...Kd8 42.Bc4 Kc8 43.Rb1 Ra4 44.Kc3 (44.Kd3 Ra3 45.Ke4 Ra4+–) 44...Ra8 (44...Ra5 45.Kb4 Rc5 46.Rd1+–) 45.Rb3 (45.Rh1 Ra3 46.Kd4 Kb8+–) 45...Kd8 46.Kd4 Kc8 47.Rb4 Kd8 48.Ke4 Ke7 (48...Kc8+–) 49.Kf5 Kf7 (49...Ra3 50.Rb7 Rf3 51.Kg6 Kd8 52.Rb8 Ke7+–) 50.Rb7 Rc8 51.Ra7 Ke8 52.Kf6 Kd8 53.Kg5 Rb8 (53...Ra8 54.Ra8 Na8 55.Kf6+–) 54.Rb7 Ra8 55.Kf5 (better is 55.Kf6!? Rc8+–) 55...Kc8 (55...Ra5 56.Ke4+–) 56.g5 Ra4 (56...Ra3 57.Bb3 Ra1 58.g6+–) 57.Bb3 Rd4 58.f4 Nd5 (58...Rd2 59.g6+–) 59.Bd5 (59.g6 Rf4 60.Kg5 Rf1 61.Bd5 Rc1 62.Be6 Kd8 63.g7 Rg1 64.Bg4 Rg4 65.Kg4 d5 66.g8Q) 59...Rd5 60.Ke6 Rd4 61.f5 Rd2 (61...Rc4 62.Kd6 Rd4 63.Kc5+–) 62.Rd7 (better is 62.g6 Re2 63.Kd6 Rd2 64.Ke7 Rc2+–) 62...Re2 63.Kf6 Re5 64.g6 Rc5 65.Rd6 (65.g7 Rc6 66.Ke7 Rc7 67.g8Q Kb7 68.Qd5 Kb6 69.Qd6 Rc6 70.Qb4 Ka6 71.Rd5 Ka7 72.Qa5 Kb8 73.Rb5 Rb6 74.Rb6 Kc8 75.Qc5) 65...Kc7+– 66.Re6 (66.Re6 Rc2 67.Kg7 Rc6 68.Rc6 Kc6 69.f6+–) 1–0. Baeumcher,K – Steinhauser,W, Bad Laasphe, 1994.

8.0–0 ab5 9.cb5 d5 10.a4 c5 11.bc6 Nc6 12.Nc3 Ne4 13.Rc1 Na5 0–1. bispo (2000) – croach (2245), net–chess.com, 2011.

8.0–0 ab5 9.cb5 d5 10.d4 (10.Qb3 A) 10...c6 11.d4 (11.bc6 Nc6 12.Rc1 Rc8 13.Ba3 Ne4 14.d4 Re8 15.Bd3=) 11...cb5 12.Bb5 Bc6 13.Be2 Ne4 14.Nc3 Nd7 15.Rfc1=; B) 10...Bd6 11.Rc1 (11.Ba3 Ba3 12.Na3 Qd6 13.Nc2 e5 14.d4 e4 15.Ne5=) 11...c6 (11...c5 12.bc6 Nc6 13.Na3 Na5 14.Qd1 Ba6 15.Nb5+=; 11...Nbd7 12.d4 Qe7 13.a4 Rfc8 14.Ba3 Ne4 15.Nc3=; 11...Nfd7 12.d4 Qe7 13.a4 c5 14.bc6 Nc6 15.Ba3=) 12.bc6 Nc6 13.Na3 Na5 14.Qd1 Be7 15.Nb5=; C) 10...c5 11.bc6 Nc6 12.Rc1 Na5 13.Qd1 Rc8 14.Rc8 Qc8 15.Na3=) 10...c5 (10...c6 A) 11.Nc3 Qd7 (11...Bd6 12.Bd3 Qe7 13.Qe2 Rc8 14.Rfc1 Nbd7 15.bc6=; 11...Qd6 12.a4 Rc8 13.Ba3 c5 14.dc5 bc5 15.Bb2=; 11...Qc7 12.Rc1 Rc8 13.a4 Qd6 14.bc6 Nc6 15.Nb5=; 11...Ra5 12.Qb3 c5 13.dc5 bc5 14.Qc2 Qd6 15.Rfd1=) 12.Qb3 Rc8 13.bc6 Nc6 14.Ne5 Qd8 15.Nc6=; B) 11.Qb3 c5 12.dc5 bc5 13.a4 Nbd7 14.Qc3 Ra5 15.Nbd2+=) 11.bc6 (11.dc5 Bc5 (11...bc5 12.a4 c4 13.Qe1 Qe8 14.Qd2 Ne4 15.Qc2+=) 12.Nc3 Nbd7 13.Rc1 e5 14.Na4 Bd6 15.Nh4=; 11.Nc3 Nbd7 (11...c4 12.a4 Bb4 13.Qc1 Re8 14.Ba3 Ba5 15.Qb2=) 12.dc5 Nc5 13.Rc1 Bd6 14.Qd4 e5 15.Qh4+=) 11...Nc6 12.Nc3 Na5 (12...Ba6 13.Nb5 Qd7 14.a4 Rfc8 15.Ba3=) 13.a4 (13.Nb5 Ne4 14.Bd3 Nc4 15.Qe2=) 13...Rc8 14.Rc1 Nc4 15.Qb3 Qd6 16.Nb5 Qd7 17.Qa2 Bb4 18.Ne5 Ne5 19.de5 Ne4 20.Bd4 Rc1 21.Rc1 Rc8 22.Rc8 Qc8 23.Qb2 (23.Bb6?? Qc1 24.Bf1 Nd2 25.Qd2 Bd2–+) 23...Be7 24.Bb6 Ba6 25.Na7 Qb7 26.Ba6 Qa6 27.Qb5 Qb5 28.Nb5 Nd2 (28...Bc5 29.a5+–) 29.a5 Nc4 30.Bc7 Bc5 31.a6 Kf8 32.a7 Ba7 33.Na7 Ke7 34.Nb5 Kd7 35.Bb8 1–0. Grott,Peter – Buecken,Guenter, DESC, 2000.

8.0–0 d5=.

8.a4 c5 9.0–0 d6 10.d4 Nbd7 11.Nc3 Ne4 12.Ne4 Be4 13.Nd2 Bb7 14.Bf3 Qc7 15.Bb7 Qb7 16.Qf3 Qf3 17.Nf3 Bf6 18.Rfd1 ab5 19.ab5 cd4 20.Bd4 e5 21.Bc3 Be7 22.Nd2 Nc5 23.Ra8 Ra8 24.Ra1 Ra1 25.Ba1 f5 26.f3 Bg5 27.Kf2 Nd3 28.Ke2 Nb4 29.Nb1 Nc2 30.Bb2 Ne3 31.Bc1 f4 32.Be3 fe3 33.Nc3 Kf7 ½–½. hal1958 – n4337m, playchess.de, 2002.

8.a4 c6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5 12.cb5 d5 13.d4 Qc8 14.Qb3 Nbd7 15.Bb2 Ne4 16.Nc3 (16.Nbd2 Bd6=) 16...Nc3 (16...Qb8 17.h3=) 17.Bc3+= Nf6 (17...Qc7 18.Bb4 Bb4 19.Qb4=) 18.Rc1 Qb8 (18...Ne4 19.Ne5+=) 19.Ne5 (better is 19.Bb4 Bd6 20.Qa4+=) 19...Ne4?? (better is 19...Rc8+=) 20.Nd7+– Qd8 (20...Qc8 21.Nf8 Bf8 22.Bb2+–) 21.Nf8 Qf8 (21...Bf8 22.Bb4+–) 22.Be1 Nd6? (22...Bd6 23.f3 Nf6 24.Qa4+–) 23.Rc7 Qd8 (23...Bd8 24.Rd7 Bc8 25.Ra7+–) 24.Qc2 Nc4 (24...Bf8 25.Bb4 Qa8+–) 25.Rb7 Bf6 (25...Bf8 26.Bc4 dc4 27.Qc4+–) 26.Bc4 dc4 27.Qc4 g6 (27...h6 28.Rc7 Qd5 29.Qd5 ed5 30.Bb4+–) 28.Qc6 Qa8 29.Qc7 (better is 29.Qd7 Qb7 30.Qb7+–) 29...Qa1 30.Qf7 Kh8 31.Qh7 1–0. Adlai – Sonatone, corr, 2018.

8.a4 d5 9.0–0 (9.cd5 ed5 10.Nc3 c5 11.ba6 Na6+=) 9...c6 (9...ab5!? 10.ab5 Ra1 11.Ba1 c5=) 10.Nc3 dc4 11.Bc4 cb5 (11...ab5 12.ab5 Ra1 13.Qa1=) 12.ab5+= a5 13.Qe2 Nbd7 14.d4 Rc8 15.Bd3 (15.Rfc1 Bb4+=) 15...Bd6 16.Rad1 (16.e4 h6=) 16...Qc7 (16...Qe7 17.Rc1=) 17.h3 e5 18.Bb1 (18.Rc1 Qd8 19.Ne5 Ne5 20.de5 Be5+=) 18...Qb8 (18...ed4 19.Nd4 Rfe8 20.Rc1=) 19.de5 Ne5 20.Nd4 (20.Nd2 Ng6=) 20...Qa8 (20...Nc4 21.Ba1=) 21.e4 (21.f3 Nc4 22.Nf5 Be5 23.Ne7 Kh8 24.Nc8 Qc8+/–) 21...Rfe8 22.Na4 Bc7 (22...Nc4 23.Nf5 Nb2 24.Qb2+=) 23.f3+= Qb8 (23...Nc4 24.Ba1+=) 24.Nf5+/– Rcd8 25.Qe3 h6 26.Ba2 (26.Nb6?! Be4 27.Rd8 Bd8=) 26...Kh7 (26...Bc8 27.Rd8 Bd8 28.f4+/–) 27.f4 (27.Nb6?! Be4 28.Rd8 Bd8 29.fe4 Bb6=) 27...Rd1 28.Rd1 Ng6 (28...Rd8 29.Rf1 Ng6 30.Bf6 gf6 31.g3+/– (31.Bf7?! Nf4 32.Bc4 Re8+/–)) 29.e5 (29.Bf7 Bf4 30.Qb6 Bh2 31.Kh1 Re4 32.Bf6+–) 29...Nh5? (29...Rd8 30.Rf1 Nd5 31.Qg3+/–) 30.Rf1?? (better is 30.Bf7 Ngf4 31.Rd7+–) 30...Nhf4 (30...Ngf4 31.Bf7 Ng2+/–) 31.Rf4 (31.Bf7 Rf8 32.e6 Bg2 33.Bg6 (33.Bg7?! Bf1 34.Kf1 Qb7 35.Bg6 Kg6 36.Bf8 Kf5=) 33...Ng6 34.Bg7+/– (34.Kg2?! Rf5 35.Rf5 Nh4 36.Kf2 Nf5=)) 31...Be5?? (better is 31...Nf4 32.Qf4 Be5 33.Be5 Qe5 (worse is 33...Re5 34.Qg3 g5 35.Bb1+/–) 34.Qe5 Re5+=) 32.Bf7+– Nf4 33.Be8 Bb2 34.Nb2 Ng2 (34...Qd8 35.Bc6 Bc6 36.bc6 Qg5+–) 35.Qe7 (35.Qe7 Qc7 36.Qc7 Ne3 37.Qg7) 1–0. Nadanian,Ashot – Sedrakian,Artashes, Yerevan, 1994.

8.Qc2 ab5 9.cb5 d6 10.0–0 h6 11.Nc3 Nbd7 12.Rac1 Rc8 13.Nd4 Nc5 14.Nc6 Qd7? 15.d4+– Na6? 16.Ne7 Qe7 17.ba6 Ba8 18.Rfd1 Nd7 19.e4 Qg5 20.Rd3 f5 21.Rg3 Qf4 22.Rf3 Qg5 23.a7 fe4 24.Ne4 Qh4 25.Nd6! Bf3 26.Bf3 cd6 27.Qc8 Rc8 28.Rc8 Kh7 29.a8Q Nf6 30.Bd1 Ne4 31.Rh8 Kg6 32.Qe8 Kf5 33.Rf8 Kg5 34.f4 (34.f4 Qf4 35.Qh5) 1–0. mrkt – chessguaru, internet, 2011.

8.a4 ab5

9.ab5 Ra1 10.Ba1 d5 11.0–0 dc4 12.Bc4 Bd6 13.d4 Nbd7 14.Nbd2 Ne4 15.Qc2 (15.Ne4 Be4 16.Bc3 Qf6=) 15...Nd2 16.Nd2 Qg5 17.g3 Nf6 18.Bd3 (18.Bc3 Ra8=) 18...Ng4 19.Bh7 (19.e4 f5 20.h4 Qg6 21.ef5 ef5=) 19...Kh8–/+ 20.Be4 Qh6 21.Kg2 Be4 22.Ne4 Qh2 23.Kf3 Qh3 24.Ke2 Qh5 25.Kd2 Ra8 (25...Qb5?! 26.Rh1 Nh6 27.Nf6 Bb4 28.Kc1 Ba3 29.Kd2 Bb4 30.Kc1 Ba3 31.Kd2 Bb4=) 26.Qc6 (26.Bc3 Nh2 (26...Qb5?! 27.Rh1 Nh6 28.Nf6=) 27.Rb1 Nf3 28.Kc1 Ba3 29.Bb2 Bb2 30.Qb2 Qh1 31.Kc2 Qh7–+) 26...Ra2 27.Kc3 Bf8 28.Bb2 Ne5! 29.g4 (29.de5 Qe5 Double attack) 29...Qh3 (29...Nc6?! 30.gh5 Na7 31.Rg1=; 29...Ng4?! 30.Kb3 Ra7 31.Nc3+=) 30.Qe8 Kg8 (30...Kg8 31.Ra1 Ra1 32.Ba1 Qg4–+; 30...Qf1? 31.Qf8 Kh7 32.de5 Qe1 33.Kb3 Rb2 34.Kb2 Qe2 35.Kc3 Qe1 36.Kc2 Qe2 37.Nd2 Qf2 38.Qa3+–) 0–1. DEFFM – GuestJGNX, freechess.org, 2018.

9.ab5 Ra1 10.Ba1 d5 11.0–0 Nbd7 12.d4 c5 13.Nbd2 Qa8 14.Qc2 Rc8 15.Bb2 dc4 16.Ra1 Qb8 17.Nc4 cd4 18.Nd4 Nd5 (18...Ne5 19.Ra4+=) 19.Qb3 Nc5 20.Qd1 Bf6 21.e4 (better is 21.Bf3=) 21...Ne4–/+ 22.Qd3 Nf4 23.Qd1 Bd4 (23...Rd8!? 24.Bf3 Bd4 25.Bd4–+) 24.Bd4 Rd8 (24...Ne2?! 25.Qe2 Qf4 26.Nb6 Rc1 27.Rc1 Qc1 28.Qf1 Qf1 29.Kf1–/+) 25.Kf1? (better is 25.Bf1–+) 25...Ne2 26.Ke2 Nc3!! (26...Nc3 27.Bc3 Rd1 28.Rd1 Qc7–+) 0–1. GuestVVXJ – GuestSXHW, freechess.org, 2017.

9.ab5= Ra1 10.Ba1 d6 11.0–0 Nbd7 12.d4 Qa8 (12...d5 13.cd5 Nd5 14.Qc2=) 13.Nbd2 Ne4 14.Ne4 Be4 15.Qb3 (15.Bc3 Qb7+=) 15...Bf6 (15...c5 16.Rd1=) 16.Bb2+= Qb7 17.Ra1 Ra8 18.Ra8 Qa8 19.Qa3 Qa5 20.Qa5 (20.Qc3 Qa8=) 20...ba5 21.Bd1 (21.Nd2 Bf5=) 21...Nb6 22.Nd2 (22.Be2 Bf3 23.gf3 a4+=) 22...Bd3+= 23.Bb3 (23.Bc3 a4+= (worse is 23...Bc4 24.Nc4 Nc4 25.Be2+=)) 23...Kf8 (23...a4 24.Ba2–/+) 24.f4 (24.Ba3 Ke8+=) 24...Ke8 (24...a4 25.Ba2–/+) 25.Kf2 (25.e4 a4 26.Ba2 a3–/+) 25...Kd7 (25...a4 26.Ba2+=) 26.e4+= a4 27.Ba2 c6 (27...a3 28.Bc3+=) 28.Ke3= Bc2 29.bc6 Kc6 30.Ba3 (30.d5 Kd7 31.e5 de5 32.Be5 Be5 33.fe5 ed5 34.cd5 a3+=) 30...g5 (30...Bb3 31.Bb3 ab3 32.c5 dc5 33.Bc5+/–) 31.g3 (better is 31.Bd6 Kd6 32.e5 Ke7 33.ef6 Kf6 34.fg5 Kg5 35.c5+=) 31...e5 (31...g4 32.Bd6 Kd6 33.e5 Kc7 34.ef6=) 32.d5 (32.fe5 de5 33.d5 Kc7 34.c5+–) 32...Kd7= 33.c5 (33.fe5 Be5 (worse is 33...de5 34.c5 Nc8 35.h3+/–) 34.c5 dc5 35.Bc5 Nc8+=) 33...Nc8 (33...ef4 34.gf4 gf4 35.Kf4 Be5 36.Ke3 dc5 37.Bc5 Bh2+=) 34.c6 Kc7 35.Nc4 (35.fe5 Be5 36.Nf3 Bf6+=) 35...Bb3 (35...ef4 36.gf4 gf4 37.Kf4+=) 36.Bb3 ab3? (better is 36...ef4 37.gf4 gf4 38.Kf4 ab3+=) 37.f5 g4 38.Kd3 Bg5 39.Na5 h5 40.Nb3 h4 41.Na5 (41.Bb4 Nb6+–) 41...Bf6 42.gh4 Bh4 43.Ke3 (43.Nc4!? Bg5+–) 43...Bg5 44.Ke2 (better is 44.Kf2+–) 44...g3? (better is 44...Bf4!?+/–) 45.h3 (45.hg3!? Nb6+–) 45...Ne7 (45...g2 46.Kf2 Bd2 47.Nc4+–) 46.Nc4 Bh4?? (46...Nc8 47.Bb4+–) 47.Kf1 (better is 47.Bd6 Kd8 48.c7 Kd7 49.Kf3+–) 47...Ng8?? (47...Nc8+–) 48.Bd6 (48.Bd6 Kd8 49.c7 Kd7 50.Nb6 Kd6 51.c8Q+–) 1–0. Schmeding,Heinrich – Kleemaier,Werner, Bahn–chS Bernkastel–Kues, 1995.

9.ab5 Ne4 10.Ra8+= Ba8 11.Nc3 Nc5 (11...d5 12.Qc2+=) 12.d4 Nb7 13.0–0 c6 14.Qa4 Na5 15.h3 (15.Ra1 d6+/–) 15...cb5 16.cb5 Qc7 (16...Bf3 17.Bf3 d5 18.e4+=) 17.Rc1 Qd6 18.Ne4?? (18.e4 Qf4+=) 18...Qd5?? (better is 18...Be4 19.Nd2 Bg6–+) 19.Nc3 Qf5 (19...Qd6 20.e4+=) 20.Na2 (20.d5 A) 20...Bd5? 21.e4 (21.Nd5?! Qd5 22.Rd1 Qc5+=) 21...Be4 22.Ne4+–; B) 20...Rc8+/–) 20...Bd5 21.Nb4 Bb3 22.Qa3 Bb4 (better is 22...Bd5 23.Nd2 Qg5+=) 23.Qb4+– d5 (23...Qf6 24.Qd6 Bd5 25.Ba3+–) 24.Ne5 (better is 24.Ba3 Rd8 25.Rc7+–) 24...f6?? (better is 24...Bc4+/–) 25.Bd3 (25.Qf8 Kf8 26.Rc8 Ke7 27.Ba3) 25...Qh5 (25...fe5 26.Bf5 ef5+–) 26.Nc6 (26.Qf8! Kf8 27.Rc8 Qe8 28.Ba3 Kg8 29.Re8) 26...Bc4+/– 27.Na5 (27.Qd6 Nbc6 28.bc6 Bd3+/–) 27...Bd3 (27...ba5 28.Qa3 Bd3 29.Qd3+=) 28.Nc6+/– Qe2?? (better is 28...Re8+/–) 29.Ne7+– Kf7 30.Nc6 (better is 30.Rc7!? Re8 31.Nf5 Kg6 32.Ng7 Qf1 33.Kh2+–) 30...Nc6 (30...Kg8 31.Ba3 Re8 32.Nb8 Bb5 33.Qd6+–) 31.Rc6 (better is 31.bc6 Rc8 32.Qb6+–) 31...Qf1 32.Kh2 Bb5?? (better is 32...Be4 33.f3 Bf3 34.gf3 Qf2 35.Kh1 Qf1 36.Kh2 Qf2 37.Kh1 Qf1 38.Kh2=) 33.Rc7+– Kg6 34.Qf8 Qf2 35.Qg7 Kf5 (35...Kh5 36.Qh7 Kg5 37.Rg7) 36.Qg4 1–0. GuestNZNM – Maal, freechess.org, 2017.

9.cb5 c5 10.d4 d5 (10...d6 11.dc5 (11.0–0 Nbd7 12.Nc3 Qc7 13.Rc1 Rfc8 14.Re1+=; 11.Nc3 Nbd7 12.0–0 Qc7 13.Rc1 Rfc8 14.dc5+=) 11...dc5 12.0–0 Nbd7 13.Qc2 Bd6 14.Rd1=) 11.dc5 Bc5 12.0–0 Nbd7 13.Nbd2 Qe7 (13...Bd6 14.Nb3=) 14.Nb3 Bb4 15.Qd4 Rfc8 16.Rfc1 Bd6 17.Rc8 Rc8 18.Rc1 Rc1 19.Nc1 e5 20.Qc3 e4 21.Nd4 Ne5?? (better is 21...Qe5 22.g3 Nc5=) 22.Nf5+– Qc7 23.Nd6 Qd6 24.Qe5 Qe5 25.Be5 Nd7 26.Bc7 f5 27.Nb3 Kf7 28.a5 ba5 29.Na5 Ba8 30.b6 Nc5 31.Bb5 g6 32.Kf1 Ke6 33.Ke2 h6 34.Kd2 g5 35.Kc3 f4 (35...Kf6 36.Kb4 Nd3 37.Bd3 ed3 38.Kc3 d4 39.ed4 Bg2 40.b7 Bb7 41.Nb7+–) 36.ef4 Kf5 37.Kb4 Nd3 38.Bd3 ed3 39.Kc3 Ke4 40.b7 d4 41.Kd2 Bb7 42.Nb7 gf4 43.f3 (43.f3 Kf5 44.Kd3+–) 1–0. Buss,Michael – Cathers,George, USCF89CM379 Indianapolis, 2003.

9.cb5 c6 A) 10.Nc3 A1) 10...Bb4 11.0–0 (11.Qb3 Qe7 12.0–0 Rc8 13.Ne5 d5 14.d4=) 11...Qe7 12.Na2 Ba5 13.Nc3 Rc8 14.Rc1=; A2) 10...Ra5 11.0–0 (11.Rc1 d5 12.d4 Bb4 13.0–0 Qe7 14.Ne5=) 11...Qc7 12.Rc1 Rc8 13.d4 d5 14.bc6=; A3) 10...Qc7 11.0–0 (11.Rc1 Qd6 12.d4 Nd5 13.Nd5 Qd5 14.Bc3=; 11.Qb3 c5 12.Rc1 d5 13.0–0 Nbd7 14.Qc2+=) 11...Rc8 12.d4 d5 13.bc6 Nc6 14.Nb5=; B) 10.0–0 Qc7 11.Nc3 (11.Qb3 Rc8 12.Rc1 c5 13.d4 Ne4 14.dc5=; 11.d4 Rc8 12.Nc3 d5 13.Bd3 Ra5 14.bc6=; 11.d3 Rc8 12.Nc3 e5 13.Rc1 d5 14.bc6=; 11.Qc2 Rc8 12.Rc1 Qd8 13.Nc3 Ra5 14.d4=) 11...Rc8 12.d4 Bb4 13.Rc1 Qd6 14.Ne5=.

9.cb5 d5 A) 10.0–0 c5 11.bc6 (11.d4 c4 12.Qc2 Ne4 13.Rc1 Nd7 14.Ba3=) 11...Nc6 12.Bf6 Bf6 13.d4 e5 14.Nc3=; B) 10.d4 B1) 10...Nbd7 11.0–0 (11.Nc3 c5 12.bc6 Bc6 13.0–0 Ra5 14.Nb5=; 11.Ba3 c5 12.bc6 Bc6 13.Be7 Qe7 14.Qb3=; 11.Bd3 c5 12.bc6 Bc6 13.0–0 Ra5 14.Nc3=) 11...Ne4 12.Nc3 c5 13.bc6 Bc6 14.Qc2=; B2) 10...Bd6 11.Nc3 (11.Ba3 c5 12.bc6 Nc6 13.0–0 Ba6 14.Nc3=; 11.0–0 c6 12.Nc3 Qe7 13.bc6 Nc6 14.Nb5=) 11...Ne4 12.0–0 c6 13.Qc2 Qe7 14.Rfc1=; B3) 10...c6 11.0–0 (11.Nc3 Qc7 12.0–0 Rc8 13.Bd3 c5 14.dc5=) 11...Ne4 12.Nc3 Nc3 13.Bc3 Qc7 14.Qd2=; B4) 10...c5 11.dc5 Bc5 12.Nbd2 Nbd7 13.0–0 Bd6 14.Nc4=; B5) 10...Bb4 11.Nc3 Qe7 12.0–0 Rc8 13.Qd3 c5 14.dc5=; C) 10.Nc3 c5 11.bc6 (11.d4 Nbd7 12.Rc1 Qc7 13.dc5 Nc5 14.0–0+=) 11...Nc6 12.Nb5 Qd7 13.Ne5 Ne5 14.Be5=; D) 10.Bf6 Bf6 11.d4 c5 12.bc6 Nc6 13.0–0 e5 14.Nc3=.

9.cb5 Ne4 10.0–0=.

7.Be2 c6

8.0–0 cb5 9.cb5 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 d5 13.Qb3 Nbd7 14.d4 Bd6 15.Nc3 Re8 16.Rc1 e5 17.de5 Ne5 18.Ne5 Be5 19.Na4 Ba1 20.Ra1 Qd6 21.Bf3 Rc8 22.Rd1 Rd8 23.Nc3 Increasing the pressure on the isolated pawn on d5 23...Qd7 24.e4 d4 25.Nd5 (25.Qc4 h6 26.Nd5 Ne4 27.Be4 Bd5 28.Qd4 Bc6 29.Qd7 Rd7 (29...Bd7?? 30.Bc6+–) 30.Rd7 Bd7=) 25...Bd5 (better is 25...Ne4!? 26.Nb6 Qe7+=) 26.ed5+= Nd5?? (better is 26...Ne8+=) 27.Rd4+– Ne3?? (27...Qe7 28.Qd3 Qe1 29.Qf1 Qe5+–) 28.Rd7 Rd7 29.Qe3 g6 (29...Rd8 30.Qb6 Re8 31.Kf1+–) 30.Qb6 (better is 30.Qe8 Kg7 31.Qd7+–) 30...Re7 31.g3 (31.Qd8 Re8 32.Qe8 Kg7 33.Qe5 Kf8 34.b6 h5 35.b7 f6 36.Qc7 Ke8 37.b8Q) 31...Kg7 32.Qd4 Kg8 33.b6 (33.Qd8 Re8 34.Qe8 Kg7 35.Bd5 Kh6 36.f4 g5 37.Qf7 gf4 38.Qf6 Kh5 39.Bf3) 33...Rd7 34.Qd7 (34.Qd7 Kf8 35.Bd5 Kg7 36.Qf7 Kh6 37.Qf8 Kh5 38.Bf3 Kg5 39.h4) 1–0. MammaMia – ElChico, Live Game Caissa's Web, 2004.

8.a4 a6 9.0–0 ab5 10.ab5 cb5 11.cb5 Ra1 12.Ba1 d5 13.Bb2 Nbd7 14.d4 Ne4 15.Qb3 Bf6 (15...Qb8 16.Rc1=) 16.Nc3 Nc3 (16...Nd6 17.Bd3=) 17.Bc3 Qc7 18.Rc1 Qb8 (18...Rc8 19.Qa3+=) 19.Bd3 h6 20.Qa3 Rc8 21.Bb4 Rc1 22.Qc1 Qc8 23.Qc8 Bc8 24.Bd6 Bb7 25.g4 g5 (25...Bd8 26.Kg2+=) 26.h3 (26.Kf1 Bd8+=) 26...Kg7 (26...Bg7 27.Kg2+=) 27.Bc7+/– Ba8 (27...Bc8 28.Kg2+/–) 28.Kf1 Bb7 29.Ke2 Bc8 (29...h5 30.Ne5 Be5 31.de5+/– (31.Be5?! Ne5 32.de5 h4=)) 30.Kd1 Bb7 (30...Kf8 31.Ne5 Be5 32.de5+/– (32.Be5?! Ne5 33.de5 Bb7=)) 31.Kc2 Ba8 32.Kc3 Bb7 33.Bc2 Ba8 34.Ne5 Be5 35.de5 (35.Be5?! Ne5 36.de5 d4 37.Kd4 Bg2+=) 35...f6 36.ef6 Kf6 37.f4 gf4? (better is 37...Ke7!?+/–) 38.ef4+– Bb7 (38...d4 39.Kd4 Bg2 40.h4+–) 39.Kd4 Ba8 (39...Ke7 40.h4 Kf7 41.f5+–) 40.h4 Bb7 (40...Kf7 41.f5 Nf8 42.Bb6 e5 43.Kd3+–) 41.g5 hg5 (41...Kg7 42.f5 ef5 43.Bf5 Bc8 44.Kd5 hg5 45.hg5 Bb7 46.Kd6 Nf8 47.Bb6 Ng6 48.Bd4 Kf7+–) 42.fg5 Kg7 (42...Ke7+–) 43.h5 White prepares g6 43...Ba8 44.h6 Kg8 45.g6 Bb7 (45...e5 46.Be5 Kf8 47.h7 Ke7 48.g7 Bb7 49.g8Q Ba8 50.h8Q Ne5 51.Qe5 Kd7 52.Bf5) 46.Be5 White intends g7 46...Ne5 (46...Kf8 47.g7 Ke7 48.g8Q Bc8 49.Qg5 Kf7 50.Bg6 Kg8 51.h7 Kf8 52.h8Q) 47.Ke5 Bc8 (47...d4 48.Kf6 Kf8 49.g7 Ke8 50.g8Q Kd7 51.Qe6 Kc7 52.Qe5 Kd7 53.Bf5 Kd8 54.Qe7) 48.Kf6 e5 (48...Kf8 49.g7 Ke8 50.g8Q Kd7 51.Qg7 Kd6 52.Qe7) 49.h7 Kh8 50.g7 1–0. Janek – Nirzan, internet, 2018.

8.a4 cb5 9.ab5 a6 10.Nc3 a5 11.0–0 d6 12.d4 Nbd7 13.Qb3 Rc8 14.Rac1 d5 15.Na4 (15.cd5 Nd5 16.Nd5 Bd5=) 15...dc4 16.Rc4 Bd5 17.Rc8 Bb3 18.Rd8 Rd8 19.Nc3 Rc8 20.Rc1 Bb4 (20...a4 21.Nb1 Rc1 22.Bc1+=) 21.Bd3= a4 22.Nb1 Rc1 23.Bc1 Nd5 24.Na3 Ba3 (24...Bd1 25.Kf1+=) 25.Ba3= Nc3 26.Nd2 Bd5 (26...Nf6 27.e4=) 27.e4 (27.Bb2 Nd1 28.Ba1 a3+/–) 27...Bb7 (27...Bb3 28.Nb3 ab3 29.Kf1+=) 28.f3 (28.Bb2 Nd1 29.Ba1 a3+–) 28...f6? (28...e5 29.d5 f5 30.Bc2 fe4 31.fe4+/–) 29.Nc4 (better is 29.Bb2 Nd1 30.Ba1+–) 29...Kf7?? (better is 29...Nb5 30.Nb6 Bc6 31.Bb5 Bb5 32.Nd7 Bd7=) 30.Nd6+– (30.Nd6 Kg6 31.Nb7+–) 1–0. GuestFXXV – GuestGTGX, freechess.org, 2017.

8.a4 cb5 9.ab5 a6 10.Nc3 ab5 11.Ra8 Ba8 12.cb5 d5 13.Qa1 Nbd7 14.d4 Qc7 15.0–0 e5 (better is 15...Bb7!?=) 16.Rc1+/– Qb8 17.de5 Ne5 18.Ne5 Qe5 19.Bf3 (19.Na4!? Qd6 20.Be5+/–) 19...Bd6+= 20.g3 Bc5?? (better is 20...Qf5 21.Bg2 Be5+=) 21.Nd5+– Bd5 (21...Qb8 22.Rc5! Nd5 23.Rd5+– (23.Bd5 bc5 24.Be5 Qd8 25.Qa8 Qa8 26.Ba8 Ra8+–)) 22.Be5 (22.Be5 Bf3 23.Bf6+–) 1–0. GuestWFPM – GuestNZMK, freechess.org, 2017.

8.a4 Qc7 9.0–0= Rd8 10.h3 (10.d3 a6=) 10...d6 (10...a6 11.Bd4=) 11.d4 Nbd7 12.Nc3 d5 13.Nd2 (13.Rc1 dc4 14.Bc4 a6=) 13...Rac8 14.Qb1 (14.cd5 Nd5 15.Nd5 cd5=) 14...Bf8 (14...c5 15.Ba3+=) 15.Rc1 Qb8 (15...c5 16.a5=) 16.Qa2 White prepares a5 (16.Bd3 Bb4=) 16...c5 17.a5 cd4 18.ed4 Qf4 19.Rd1 Bd6 (19...dc4 20.Nc4 Bb4 21.Bc1–/+) 20.g3 Qh6 21.Kh2 Ne4 (21...dc4 22.Nc4 Be7 23.ab6 ab6 24.Qa7=) 22.Nde4= de4 23.a6 (23.Ba3 Ba3 24.Qa3 Qf6=) 23...Ba8 24.Bc1 Qg6 25.Qd2 White intends d5 25...f5 (25...Nf6 26.Qe3=) 26.Qg5+= Qf7 27.Ba3 h6 28.Qd2 Bb8 29.d5 (29.Qe1 Qf6+=) 29...ed5 ½–½. Labahn,Wolfgang – Kuris,I, Berliner Sommer 8th, 1990.

8.a4 d5 9.Bf6 Bf6 10.d4=+.

8.Nc3 d5 9.0–0 c5 10.d4 Nbd7 11.a4 Qc7 12.Rc1 (12.cd5 ed5 13.dc5 Nc5= (worse is 13...Qc5 14.Ba3 Qc3 15.Be7+/–)) 12...Rac8 (12...dc4 13.Bc4 cd4 14.Qd4+=) 13.Nd2 (13.cd5 ed5 14.dc5 bc5=) 13...Rfe8 (13...cd4 14.ed4 dc4 15.Nc4+=) 14.cd5 ed5 15.Bf3 Bf8 16.Ne2 c4 17.Re1 Bb4 18.Bc3 Bc3 (18...Bd6 19.g3+=) 19.Nc3 Qd6 (19...h6 20.Ra1=) 20.Qc2 (20.a5 ba5 21.Qa4 Qb4=) 20...Re7 21.g3 h6 22.Ne2 Nf8 23.Qc3 Ng6 24.Ra1 Qd7 25.Qb4 Re6 26.Bg2 h5 27.Nc3 Qd6 (27...Re7!?=) 28.Qd6+= Rd6 29.a5 ba5? (better is 29...Rb8+=) 30.Ra5+– a6 31.ba6 Ra6 32.Ra6 Ba6 33.Nd5 Nd5 34.Bd5 c3 (34...Ne7 35.Bh1+/–) 35.Nb3 (35.Ne4 Ne7 36.Ba2 h4+–) 35...Bc4 (35...Ne7 36.Bh1 Bd3 37.Nc5+–) 36.Bc4 (better is 36.Bb7!? Rd8 37.Nc5+–) 36...Rc4+/– 37.Rc1 Ne7 38.Na1 (38.Kf1 Nd5+/–) 38...Nc6 (better is 38...f5!?+=) 39.Nc2+/– Na5 40.Rb1 (better is 40.Kf1 Nb3 41.Re1+/–) 40...Kf8? (40...Ra4 41.d5 Kf8 42.Nd4+/–) 41.Rb4 (41.Rb5!? Ra4 42.Rh5 Nc4+–) 41...Rb4 (41...g6 42.Kf1 Rc7 43.Ke2+–) 42.Nb4+– Nc6 43.Nc2 (43.Nc6?? c2 44.Ne5 c1Q 45.Kg2 Qc8–+) 43...Ke7 (43...f5 44.Kf1 Na5 45.Ke2+–) 44.Kf1 Kf6 (44...Na5 45.Ke2+–) 45.Ke2 Kf5 (45...Na7 46.Na3+–) 46.f3 Ne7 (46...Nd8 47.e4 Ke6 48.Kd3+–) 47.Kd3 g5 (47...Ke6 48.e4+–) 48.e4 Kg6 49.Kc3 f5 (49...Kf6 50.Ne3+–) 50.Ne3 f4 (50...fe4 51.fe4 Nc6+–) 51.gf4 gf4 (51...Ng8 52.fg5 Kg5 53.d5+–) 52.Ng2 (better is 52.Nd5!? Nc8 53.h4 Kf7+–) 52...Kg5 (52...Kh6 53.Nf4 Kg5 54.Ng2+–) 53.h4 (53.h4 Kf6 54.Nf4+–) 1–0. Matveenko,Yury – Leun,Victor, VRN Veteran Champs, 2007.

7.Be2 d5

8.0–0 c5 (--> 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).

8.a4 c5 9.0–0 (--> 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.a4).

8.Nc3 Nbd7 9.a4 h6 10.a5 ba5 11.Ra5 c5 12.Ra1 d4 13.Na4 e5 14.ed4 cd4 15.0–0 d3 16.Ne5 Ne5 17.Be5 de2 18.Qe2 Re8 19.Bf4 Ne4 20.d3 Nc5 21.Nc5 Bc5 22.Qc2 Qf6 23.g3?? g5 24.Qd1 gf4 25.Qg4 Qg5 26.Qd7 Re7 27.Qh3 Rae8 28.g4 f5 (29.d4 Bd4–+; 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 Rd8 12.a4 Nbd7 13.Nbd2 ab5 14.ab5 Ra1 15.Ba1 Ne4 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 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 Nf6= 36.d6 cd6 37.Rd6 Rd6 38.Rd6 Nh5 39.Rd7 Ra8 40.Rb7 Ng3 41.Bd6 a6 42.Rb6+/– ab5 43.ab5 Ra2 44.Rc6 Rb2 45.b6 h5 46.Be7 Nf1 47.Kd3 Nd2?? 48.Rc2 Rc2?? 49.Kc2 Nf3 50.Kd3 (50...Ne1 51.Kc3+–) 1–0. Garcia Piedra,Juan – Gonzalez,Abel, Ch Asturias (team) (B), 1999.

8.cd5 Nd5 9.Nc3 Nd7 10.0–0 c5 11.bc6 Bc6 12.Nd4 Nc3 13.Bc3 Bb7 14.Bf3 Bf3 15.Qf3 Ne5 16.Qe4 Bf6 17.f4 Nd7 18.f5 Nc5 19.Qg4 Qd7 20.fe6 fe6 21.Bb4? Rae8 22.Rac1 Qd5 23.Nb5= Rf7 24.Nc7 Rc7= 25.Rf6 Na6 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 (49...Kd6 50.Ka4+–) 1–0. Furlong,Kevin – Wyeth,Anthony J, Oxford op, 1998.

8.cd5 Nd5 9.e4 Nf4 –/+.

8.0–0 a6

9.a4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.d3 Nc5 13.Nbd2 dc4 14.dc4 Nfe4 15.Qc2 Bf6 16.Rd1 Qe7 17.Ne4 Be4 18.Bd3?? (better is 18.Bf6 Qf6 19.Qd2=) 18...Nd3 (better is 18...Bd3!? 19.Rd3 Ba1 20.Rd1–+) 19.Rd3?? (better is 19.Bf6 Qf6 20.Rd3–+) 19...Ba1 0–1. Pies,Gerhard – Hoffmann,Frank (1735), Leverkusen op, 2004.

9.a4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.d4 Ne4 13.cd5 Bd5 14.Nc3 Nc3 15.Bc3 Bd6 16.Qc2 f5 17.g3 Nf6 18.Ne5 Ne4 19.f3 Nc3 20.Qc3 Qg5 21.Kf2 (21.f4 Qh6+=) 21...Qh5 22.Kg1 Ra8 23.Kg2 Ra2 24.Qd3 Ra3 25.Qd2 ½–½. Jacobi,Karl Heinz (1920) – Hoelting,Siegfried (1770), GER–ch Seniors–A, 2008.

9.a4 dc4 10.Bc4 c6 11.d3 cb5 12.ab5 a5 13.Nbd2 Nbd7 14.e4 Qc7 15.Rc1 Qf4 16.Bb3 Rfc8 17.Nc4 Bb4 18.Ba4 Rc7 19.Qe2 Rac8 20.Rfd1 Bc5 21.Bc3 Nh5 22.Bb3 Qg4 23.Nd4 Qg5 24.Qf3 Nhf6 25.Ba2 Ne5 26.Qe2 Ng6 27.Qe3 Nf4 28.Qg3 Qg4–/+ 29.Qg4 Ng4–+ 30.Rd2 e5 31.Nb3 Bf2 32.Kf1 Be3 33.Ne3 Ne3 34.Kf2 Ng4 35.Kg3 Rc3 36.Rc3 Rc3 37.Kg4 Nd3 38.Nc1 Be4 39.Nd3 Bd3 40.Rf2 Bg6 41.Rd2 Kf8 42.Rd6 Rc2 43.Bd5 Rd2 44.Kf3 Ke7 45.Rb6 Rd5 (45...Rd5 46.Rb7 Kd6–+) 0–1. Pierred (2270) – Mike_34 (2355), Rated game, 3m + 0s, 2005.

9.a4 c5 10.d4 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 Nbd7 14.Nbd2 Qa8 (14...Qc7 15.Qc2=) 15.Bb2 (15.Qe2 Rc8=) 15...Ne4 (15...cd4 16.Bd4 Bb4 17.Qa1=) 16.Be2 (16.Qe2 Bd6=) 16...Bf6 (16...Rd8 17.Qc2 Nd2 18.Qd2=) 17.Ne4 Be4 18.Qb3 (18.dc5 Bb2 19.Qd7 bc5=) 18...cd4 19.ed4 (19.Ra1 Qb7 20.Bd4 Bd4 21.ed4 Ra8=) 19...Rc8+= 20.Bc4 (better is 20.Ra1 Qb7 21.Rc1+=) 20...g6?? (better is 20...Bf3 21.gf3 Nf8–/+) 21.Be6!+/– fe6 22.Qe6 Kh8 23.Qd7 Bf3 24.gf3 Rd8 25.Qc6 Kg7 26.Ra1 Qb8 27.Ra6 Rd6 28.Ra8 (better is 28.Ra7! Qa7 29.Qd6+–) 28...Rc6+= 29.Rb8 Rd6?? (better is 29...Rc2 30.Rb7 Kh6 31.Rb6 Be7=) 30.Rb7 Kg8 31.Ba3 Rd4 (31...Rd8 32.Rb6 Bd4 33.Rb7+–) 32.Rb6 Rd1 33.Kg2 Rb1? (better is 33...Bd4 34.Rd6 Rd2+–) 34.Rf6 Kg7 (34...Rb5 35.Rd6 Rg5 36.Kh1 Rf5+–) 35.Rb6 Kh6 (35...Kf7 36.Bc5+–) 36.f4 1–0. Levin,Anatoly (1980) – Martinez,Rainmy (2235), Internet Section, 2003.

9.a4 c6 10.d3=.

9.d3 ab5 10.cb5 c5=.

9.d3 c6 10.a4 dc4 11.dc4 Qc8 (11...Ne4 12.Nc3 Bf6 13.Qc2 Nc3 14.Bc3 cb5 15.ab5 ab5 16.Ra8 Ba8 17.Bb4=) 12.Nc3 (12.Qd4 cb5 13.ab5 Qc7=) 12...Rd8 (12...Qc7 13.Qb1=) 13.Qc1 (13.Qc2 Bd6=) 13...Qc7 (13...Bd6 14.Rd1=) 14.Rd1 Rd1 15.Qd1 Nbd7 (15...Bd6 16.Qd2=) 16.Qd2 (16.Nd4 Rd8=) 16...Rd8+= 17.Rc1 (17.Qc2 Nc5+=) 17...ab5 (17...h6 18.Qc2+=) 18.ab5 (18.cb5 Ne5 19.Qc2 cb5 20.Nb5 Nf3 21.gf3 Qc5=) 18...c5 (18...Nc5 19.Qc2=) 19.Qc2 Ng4 (19...Bd6 20.e4=) 20.Ne4 (20.e4 Bd6 21.h3 Nge5=) 20...f5 (better is 20...Ndf6 21.Ng3 Bd6=) 21.Qc3 (better is 21.Ng3!?=) 21...Bf6–/+ 22.Nf6 Ndf6 (worse is 22...Ngf6 23.Rd1+=) 23.h3 Nf2 24.Qe5 Qe5 25.Be5 Bf3 26.Bf6 (26.Bf3 Nd3 27.Rd1 Rd7 28.Bf6 gf6+/–) 26...gf6 (26...Be2? 27.Bd8 Ne4 28.Bb6+–) 27.Bf3 Ne4 28.Be4 fe4 29.Ra1 Kf7 30.Ra7 Kg6 31.Rc7 (31.g4 f5–/+) 31...Rd1–/+ 32.Kf2 (32.Kh2 Rc1–/+) 32...Rc1 33.Rc6 (33.g4 Rc4 34.Rc6 Rb4 35.Rb6 c4–/+) 33...e5 (33...Kf5 34.Rb6 Rc4 35.Rc6–/+) 34.Rb6+= Rc4 35.Rc6 (35.g4 Rb4+=) 35...Rc2–/+ 36.Kg1 (36.Kg3 c4–/+) 36...h5 37.Rc7 (37.g4 hg4 38.hg4 Kg5–/+) 37...Re2 (37...c4 38.b6–/+) 38.Rc5 Re3 39.b6 (39.Rc8 Rb3 40.Rb8 Kg5–/+) 39...Rb3–+ 40.Rc6 Rb2 (40...h4 41.Kf2–/+) 41.g3 (41.g4 hg4 42.hg4 e3+=) 41...e3 (41...Kg5 42.Re6–/+) 42.Kf1 e4 (42...Kg5 43.Re6–/+) 43.Re6 (43.g4 hg4 44.hg4 Kg5+=) 43...Kf5 44.Rc6 Kg5 45.h4 (45.Rc8 Rb6 46.Ke2 Rb3–+) 45...Kg4 46.Rf6 Kg3 47.Rg6 Kh4 0–1. Bonetti,Shane – Messiah, ICC, 2002.

9.cd5 Nd5=+ 10.a4 ab5 (10...c5 11.d4=+) 11.ab5= Ra1 12.Ba1 c5 13.d4 cd4 (13...Nd7 14.Nc3=) 14.Bd4 Nd7 15.Nbd2 (15.Qc2 Nc5=) 15...Bf6 (15...Qc7 16.Nc4=) 16.Qc2 (16.Ne4 e5 17.Nf6 Qf6=) 16...Qe7 (16...e5 17.Bb2=) 17.Ra1 (17.Bd3 h6=) 17...Rc8 18.Nc4 Nf4 (18...e5 19.Bb2=) 19.ef4 Bf3 20.Bf3 Bd4 21.Rd1 Qc5 22.Qd2 Qc4 23.Qd4 Qd4 24.Rd4 Rc1 ½–½. Bonetti,Shane – Woelfelschneider,Peter, ETC, 2003.

8.0–0 dc4

9.Nc3 Bd5 10.d4 a6 11.Qc2 a5 12.a4 c6 13.Ne5 Nbd7? 14.Rfd1 cb5= 15.ab5 Ne5?? 16.de5+– Nd7 17.Nd5 ed5 18.Qc3?? f6?? 19.Bf3 Bb4 20.Bd5+– Kh8 21.Qc4 Rc8 22.Bc6 Ne5?? 23.Qe4 Qe7+= 24.Qh4 Nc6–/+ 25.bc6 Rc6 26.Rd4 Bc3 27.Bc3 Rc3 28.Qg4 Rb3 29.Rd7 f5 30.Qd4= Qf6 31.Qf6 gf6 32.Rd5 a4 33.h3 b5 34.Rf5 a3 0–1. gtate (1960) – tomy (2145), net–chess.com, 2006.

9.Bc4 c6 10.a4 a6 11.d4 cb5 (11...ab5 12.ab5 A) 12...cb5 13.Bb5 (13.Ra8 bc4 14.Ra7 Be4 15.Re7 Qe7 16.Ba3 Qc7 17.Bf8) 13...Ra1 14.Ba1 Nc6 15.Nc3 Qc7 16.Bb2 Rc8 17.Qb1; B) 12...Ra1 13.Ba1 cb5 (13...c5 14.Bb2 Qc7 15.dc5 Qc5 16.Nbd2 Nbd7 17.Bd4) 14.Bb5= Qd6 15.Nc3 Nbd7 16.Qe2 Ra8 17.Bb2) 12.ab5 a5 (12...Bd6 13.Qe2 (13.Nbd2 ab5 14.Ra8 bc4 15.Ra7 Bd5 16.Qe2 Nc6 17.Raa1) 13...a5 (13...ab5 14.Ra8 bc4 15.Ra7 Qc7 16.Ba3 Bf3 17.Rc7) 14.Rc1= (14.Ba3 Ba3 15.Na3 Ne4 16.Bd3 Nd7 17.Rfc1) 14...Nbd7 15.Nc3 Rc8 16.Bd3 Qe7 17.e4; 12...ab5 13.Bb5 (13.Ra8 bc4 14.Ra7 Qc7 15.Qa4 Nc6 16.Qc4 b5 17.Qc2) 13...Ra1 14.Ba1 Qc7 15.Nc3 Nbd7 16.Bb2 Rc8 17.Qe2) 13.Nbd2 (13.Qb3 Nbd7 14.Rc1 Bd6 15.Nc3 Qe7 16.h3 Rac8 17.Nd2) 13...Nbd7 (13...Ne4 14.Ne4 (14.Ne5 Nd2 15.Qd2 a4 16.Qd3 Re8 17.Ba2) 14...Be4 15.Ne5+= Nd7 16.Nc6 Qe8 17.f3) 14.Qb3 (14.Qa4 Ne4= (14...Rc8 15.Bd3 Bb4 16.Rad1 h6 17.h3) 15.Ne4 Be4 16.Nd2 Bb7 17.Rac1) 14...Rc8 (14...Ne4 15.Ne4 Be4 16.Nd2= (16.Rfc1 Rc8 17.Ne1) 16...Bb7 17.f3; 14...Bd6 15.Bd3 Qe7 16.Nc4 Bd5 17.Qa4) 15.Rac1 (15.Rfc1 Ne4= (15...h6 16.Bd3 Bd5 17.Qa4) 16.Ne4 Be4 17.Ne1) 15...Nd5 (15...Ne4 16.Ne4 Be4 17.Nd2=) 16.Bd5 (16.e4 Nb4+= 17.Bc3) 16...Bd5 17.Qd3 Nf6 (17...Rc1 18.Rc1 Bb4 19.e4=) 18.Ne5 Qd6 19.Ndc4 (19.e4 Bb7+=) 19...Qb8 20.Ba3 Rfe8 (20...Ba3 21.Qa3 Rfd8 22.Qa4=) 21.f3 h6 (21...Bc4 22.Rc4 Ba3 23.Qa3 Rc4 24.Nc4=) 22.Rc2 (22.Nd2 Rc1 23.Rc1 Ba3 24.Qa3 Qd8+=) 22...Ba3 (22...Bc4 23.Rc4 Rc4 24.Be7=) 23.Qa3 Rc7 (23...Bc4 24.Nc4 Nd5 25.e4+=) 24.Rfc1 Rec8 25.Qa4 (25.e4 Bc4 26.Nc4 Rd8+=) 25...Ne8 (25...Bc4 26.Rc4 Rc4 27.Nc4=) 26.e4 (26.Na3 Rc2 27.Rc2 Rc2 28.Nc2 f6=) 26...Bc4= 27.Rc4 Rc4 28.Rc4 Rc4 29.Qc4 Qd6 (29...Qc7 30.Qc6 Qc6 31.bc6= (worse is 31.Nc6 a4–/+)) 30.Nc6 (30.Kf1 Qb4 31.Qc6 Nd6 32.Qb6 a4 33.Qd8 Kh7=) 30...Kf8 (30...Qa3 31.d5 Qe3 32.Kf1=) 31.e5 Qa3 32.Kf2 (32.h3 Kg8=) 32...g6 (32...Qb2 33.Kg3=) 33.d5 (33.Kg3 Qe3 34.h3 Nc7=) 33...ed5 (33...Qb2 34.Kg3 Ng7 35.Kh3+=) 34.Qd5+= a4 35.e6 (better is 35.Qd4+=) 35...Qc5?? (better is 35...fe6 36.Qd4 Qc5 37.Qc5 bc5+=) 36.Qc5+– bc5 37.e7 Kg7 38.b6 a3 (38...Nd6 39.b7! Nb7 40.e8Q+–) 39.b7 a2 40.b8Q a1Q 41.Qe8 Qb2 42.Kg3 (42.Kg3 Qf6 43.Qf8 Kh7 44.e8Q Qg5 45.Kf2 Qh4 46.Kg1 Qe1 47.Qe1 h5 48.Qe5 c4 49.Qfg7) 1–0. Chirpii,Alexandru (1965) – Solcanean,Serghei (2255), Cupa ULIM, Kishinev MDA (1), 2005.

9.Bc4 c6 10.a4 c5 11.d4 Nbd7 12.Qe2 Rc8 13.Nbd2 Nb8 14.Rfd1+= Qc7 15.dc5 Qc5 16.a5 Rfd8 17.Bd4 Qc7 18.ab6 ab6 19.Rdc1 Qd7? 20.Bb6+– Re8 21.Ra7 Bc5 22.Bc5 Qc7?? 23.Bd4 Nbd7 24.e4 Qb8 25.Rca1 Rc7 26.Ne5 Rec8 27.b6 Nb6 28.Bb6 Re7 29.f4 h6 30.Qe3 Kh8 31.Bc5 Rec7 32.Bd6 Be4 33.Nf7 Kg8 34.Nh6! gh6 35.Ne4 Ne4 36.Rc7 Rc7 37.Qe4 Qb6 38.Kf1 Rc8 39.Qg6 Kh8 40.Be5 1–0. masterubu (2515) – guerino (1710), net–chess.com, 2001.

9.Bc4 c6 10.a4 Qd6 11.d4 Qb4? 12.Ba3+/– Qc4 13.Be7 Re8 14.Ne5+– Qd5? 15.Nc3 Re7 16.Nd5 Nd5 17.e4 Nf6 18.Rc1 cb5 19.ab5 Be4 20.Rc8 Re8 21.Re8 Ne8 22.Qh5 Nd6 23.Rc1 Nd7 24.Nd7 f6 25.Qh3 Kf7 26.Rc7 Nf5 27.Qh5 Ke7 28.Nb6 Kd6 29.Rd7 1–0. "lasker" (2040) – ChrisOos, internet, 2007.

9.Bc4 Bd5 10.Qe2 Bc4 11.Qc4 Qd5 12.Rc1 Qc4 13.Rc4 Ne8 14.Bd4 f6 15.d3 e5 16.Bb2 Nd7 17.Nc3 Nc5 18.Ba3+/– Nd6 19.Bc5+– bc5 20.Rc5 Ne8 21.Rc4 Rd8 22.Rd1 Rd7 23.d4 Nd6? 24.de5 Rfd8 25.ed6 Rd6 26.Nd4 R6d7 27.e4 a5 28.Nd5 Bd6 29.Ne6 Re8 30.Nec7 Bc7 31.Nf6! Kf7 32.Nd7 Rd8 33.Rc7 (33.Rc7 Rc8 34.Rc8 h6 35.b6 Kg6 36.Rd6 Kg5 37.Rc5 Kf4 38.Rf5 Kg4 39.f3 Kh4 40.g3 Kh3 41.Rh5#) 1–0. jdzg – vagc, internet, 2009.

9.Bc4 Bd5 10.Be2 Bb7 (10...a6 11.a4=) 11.Nc3 Nbd7 12.Nd4 (12.Qc2 a6+=) 12...Nc5 (12...a6 13.ba6 Ba6 14.Nc6 Be2 15.Qe2+=) 13.Qc2+= Rc8 (13...a6 14.Nc6 Bc6 15.bc6+/–) 14.Nc6+/– Bc6 15.bc6 Bd6?? (better is 15...e5+/–) 16.d4+– Nce4 (16...Ncd7 17.cd7 Qd7 18.Rad1+–) 17.Ne4 Ne4 18.Qe4 Qf6 19.Qc2 Qh6 (19...Qe7 20.a4+–) 20.f4 Qh4 21.Rf3 f5 (21...Qe7 22.Rb1+–) 22.d5! Qh6 (22...ed5 23.Rg3 Combination) 23.Rh3 Qg6 24.Rg3 Qf7 (24...Qh6 25.de6 Rce8+–) 25.de6 Qe7 26.Qc3 Bb4 27.Rg7 Kh8 28.Rg8! Kg8 (28...Kg8 29.Qh8) 29.Qh8 1–0. DEFFM – GuestWQMB, freechess.org, 2018.

9.Bc4 Qd6 10.a4 Ng4 (10...c6 11.Nc3=) 11.Ba3 c5 12.bc6 Qc7?? (12...Bc6 13.Bd6 Combination; 12...Nc6 13.Bd6 Combination; 12...Qc6 13.Be7 Pinning (13.Be7 Deflection)) 13.cb7+– Qb7 14.Bb2 (14.h3 Ba3 15.Na3 Nf6+–) 14...Nd7 (14...Rc8 15.Be2+–) 15.d4 Rac8 16.Qb3 Ndf6 (16...Rc7 17.Nbd2+–) 17.h3 Nh6 18.Nbd2 Ne4 (18...g6 19.Qd3 Nd5 20.e4+–) 19.Ne4 Qe4 20.Bd3 (20.Rfc1 g6+–) 20...Qb7 (20...Qd5 21.Qb5+–) 21.e4 Kh8 22.a5 Rb8 (22...b5 23.Bc3+– (23.Qb5?! Qb5 24.Bb5 Rb8+–)) 23.a6 Qc7 24.d5 Qf4 (24...Rbc8+–) 25.Be5 Qf3 26.gf3 Bc5 27.Qb2 (27.Bb8 Rb8 28.de6 fe6 29.Qe6 Rf8+–) 27...f6 28.Bb8 ed5 1–0. DEFFM – GuestSCQT, freechess.org, 2018.

9.Bc4 a6

10.a4 ab5 11.ab5 Ra1 12.Ba1 c5 13.bc6 (13.d4 Qc7=) 13...Nc6 14.Nc3 (14.d3 Qd6=) 14...Ne8 (14...Nb4 15.Ne5=) 15.d4 Nd6 16.Be2 Na5 17.d5 (17.Qc2 Nac4=) 17...Qc8 (17...Bf6 18.de6 fe6 19.Qa4=) 18.e4+= Rd8 (18...f5 19.Nd4 ed5 20.Nd5 Bd8+=) 19.Nd4 (19.Qb1 Ndc4+=) 19...Bf6= 20.Bg4 (better is 20.Re1!?=) 20...Qc4–/+ 21.Na4 Ne4 (21...ed5?! 22.Nb6 Qa6 23.Nd5 Ne4 24.Nf6 Nf6 25.Be2=) 22.Nb6 Qc5 23.Ne6 fe6 (23...fe6 24.Be6 Kh8–/+) 0–1. Bonetti,Shane – Messiah, ICC, 2002.

10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 13.Re1 cb5 14.Bb5 Bc6 15.Bc6 Nc6 16.Nc3 Qd3=+ 17.Qb3 Nb4 18.h3 Ne4 19.Rd1 Bd6 20.Qb1 Nc5?? 21.Qb4+– Rb8 22.Qd4 b5 23.Nb5! Bf8 24.Qd3 Nd3 25.Nbd4 Rb6 26.Bc3 e5 27.Nf5 g6 28.Ng3 f6 29.Ne1 Ne1 30.Re1 Kf7 31.Kf1 Ke6 32.Ke2 Kd5 33.Ra1 f5 34.Ra5 Ke6 35.Re5 Kd6 36.Re8 Be7 37.Rh8 h5 38.Rg8 Kd5 39.Rg7 Bc5 40.Nh5! gh5 41.Rg5 Rh6 42.Rf5 Kc6 43.Rf6 Rf6 44.Bf6 Kd5 45.d4 Bb6 46.Kf3 Ke6 47.Be5 Ba5 48.g4 Be1 49.gh5 Kf5 50.h6 Kg6 51.Bg7 Kh7 52.d5 Bb4 53.e4 Kg6 54.e5 Kf7 55.Ke4 Bc5 56.d6 Bf2 57.Kd5 Bh4 58.e6 Kg8 59.e7 Be7 60.de7 Kh7 61.Bf8 (61.Bf8 Kg6 62.e8Q Kg5 63.Qe4 Kf6 64.Bg7 Kf7 65.Qe6; 61.h4 Kg6 62.e8Q Kh7 63.Qe4 Kg8 64.h5 Kf7 65.Qe6) 1–0. hsingletary (1750) – kerger (1670), net–chess.com, 2001.

10.a4 ab5 11.ab5 Ra1 12.Ba1 Bd6 13.d3=.

10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.d4 Qa8 14.Nbd2 Ne4 15.Be2 Ndf6 16.Qc2 Nd2 17.Qd2 Be4 18.Bb2 Qd5 19.Qc3 Rc8 20.Ra1 Bf3 21.Bf3 Qb5 22.Bc6 Qb4 23.Qc2 b5 24.Ba3 Qa5 25.Bb2 Qb6 26.Bf3 (26.e4 Rd8=) 26...b4 (26...c5 27.dc5 Qc5 28.Qd1–/+) 27.h3 g6 (27...c5 28.Qc4–/+) 28.e4 c5 29.d5 (better is 29.Qc4!?+=) 29...ed5–+ 30.ed5 c4 31.Qe2 Bc5 0–1. GuestDMVH – asadhad, freechess.org, 2017.

10.a4 ab5 11.Bb5 c6 12.Bc4 c5 13.d3 Nc6 14.Nbd2 Qc7 15.Qc2 Nb4 16.Qb3 Nd7 17.Rfc1 Rfd8 18.Be6 Rf8? (better is 18...fe6 19.Qe6 Kf8 20.Bg7 Ke8=) 19.Qb4!+– Bf3 (19...cb4 20.Rc7 Pinning (20.Rc7 Deflection)) 20.Nf3 (worse is 20.gf3 fe6 (20...cb4?? 21.Rc7 fe6 22.Rd7+–) 21.Qg4 Bf6 22.Qe6 Kh8 23.Bf6 Rf6+/–) 20...fe6 (20...cb4?? 21.Rc7 Nc5 22.Bc4+–) 21.Qg4 Bf6 22.Qe6 Kh8 23.Bf6 Rf6 24.Qe4 Qd8 25.Ng5 g6 26.Qh4 Qe7 27.Ne4 Rf7 28.Qe7 Re7 29.f3 Kg7 30.Kf2 Ne5 31.Ke2 Rea7 32.f4 Nd7 33.Nc3 Kf6 34.Rcb1 Ke6 35.g4 h6 36.h4 Rg8 37.Kd2 Raa8 38.e4 g5 39.Nd5 Rab8 (39...gf4 40.Nc7 (worse is 40.Nf4 Ke5 41.Nd5 Rg4+–) 40...Ke7 41.Na8 Ra8 42.g5 hg5 43.hg5+–) 40.hg5 hg5 41.f5 Ke5 (41...Kf7+–) 42.Ne7 1–0. Wlasow,Andrey (2220) – Legg,Jerry (1735), IECG, 2004.

10.a4 c5 11.Nc3 ab5 12.Nb5 Nc6 13.d4 cd4 14.Nfd4 Qc8 15.Rc1 Bc5 16.Nb3 Rd8 17.Bd3 Nb4 18.Bf6 gf6 19.Qg4 Kh8 20.Be4 Rg8 21.Qh4 Be4=+ 22.Qe4 Ra4 23.Rfd1 Qf8 24.Nc5 bc5 25.Nd6 Ra6 26.Qf4 Qe7?? 27.e4 Rc6 28.Kf1 e5 29.Nf5 Qb7 30.Qe3 c4 31.Rd6 c3 32.Rc6+/– Qc6 33.Rc3 Qa6 34.Kg1 Nd3!–/+ 35.h3 Nf4 36.Ng3+= h5 37.Ra3 Qb5 38.Rb3+/– Qc4 39.h4 Qc2 40.Qb6 Kh7 41.Rf3 Rg3= 42.Rg3 Ne2 43.Kh2 Qc1 44.f4?? Qf4–+ 45.Qe3 Ng3 46.Qg3 Qe4 (47.Kh3 f5–+) 0–1. guest298 – QuarkX (2675), ICC, 2003.

10.a4 c6 11.Re1 cb5 (11...ab5 12.ab5 Ra1 13.Ba1=) 12.ab5 a5 13.d4 Nbd7 (13...Bb4 14.Nbd2=) 14.Nbd2 Bb4 15.Qc2 (better is 15.e4=) 15...Ba6?? (better is 15...Bf3!? 16.gf3 Nd5+=) 16.Bc3 (better is 16.ba6 Qc8 17.Rec1+–) 16...Bc3+= 17.Qc3 (worse is 17.ba6 Ba1 18.Ra1 Nb8–/+) 17...Bb7 18.e4 (18.Qa3 Re8+=) 18...Ra7 (18...Rc8 19.h3=) 19.Bb3 (better is 19.Qa3+=) 19...Nc5?? Increases the pressure on e4 (better is 19...Qb8+=) 20.dc5+– bc5 21.Qc5 Qa8 (21...Ra8 22.e5 Nd7 23.Qe3+–) 22.b6 Ra6 (22...Rc8 23.Qd4 (23.ba7? Rc5 24.e5 Nd7–+) 23...Ra6 24.Bc4+–) 23.Bc4 Rc8 24.Qd4 Rc4 (24...Rd8 25.Qb2+–) 25.Nc4 Ne4 (25...h6 26.Nd6 Ne8 27.Nb5+–) 26.Ra5! Nf6 (26...Ra5 27.Na5 Combination) 27.Ra6 Ba6 28.Ra1 h6 29.Nd6 Qc6 30.Ne5 Qc2 31.Ndf7 Nd5 32.Nd6 (32.Nh6 gh6 33.Qg4 Kh7 34.Qe6 Kg7 35.Qf7 Kh8 36.Qd5 Qb1 37.Rb1 Bb5 38.Rb5 h5 39.Qf7 h4 40.Ng6) 32...Nc3 33.Qb4 Ne2 34.Kh1 Nc1 35.Qe1 Nd3 36.Nd3 Qd3 37.Qe6 Kh7 38.b7 (38.Qf5 Qf5 39.Nf5 Bc8 40.Ne7 Bb7 41.Ra7 h5 42.Rb7 Kh6 43.Ra7 Kg5 44.b7 Kf6 45.b8Q Ke6 46.Qb6 Kf7 47.Nf5 Kg8 48.Qd4 Kf8 49.Qd8) 38...Bb7 39.Nb7 Qd4 40.Qf5 g6 41.Qf7 Qg7 42.Qg7 Kg7 43.Ra6 h5 44.g4! hg4 45.Ra4 Kf6 46.Rg4 Kf5 47.h3 Kf6 48.Nd6 Kg7 49.Kg2 Kh6 (49...Kf6 50.h4 Ke5 51.Rg6 Kd4 52.h5 Ke5 53.h6 Kd4 54.h7 Kc3 55.h8Q Kc2 56.Qc8 Kb2 57.Ne4 Kb3 58.Rb6 Ka4 59.Qa6) 50.Kg3 Kg7 51.f4 Kh7 52.Nc4 Kg7 53.Ne5 Kf8 54.Rg6 Ke8 (54...Ke7 55.h4 Kf8 56.h5 Ke7 57.h6 Ke8 58.h7 Kf8 59.h8Q Ke7 60.Qh7 Ke8 61.Rg8) 55.h4 Ke7 (55...Kf8 56.h5 Ke7 57.h6 Ke8 58.h7 Ke7 59.f5 Kd8 60.Rg7 Ke8 61.h8Q) 56.Kg4 (56.h5 Kf8 57.h6 Ke7 58.h7 Kf8 59.h8Q Ke7 60.Qh7 Ke8 61.Rg8) 56...Kf8 (56...Ke8 57.f5 Ke7 58.Rc6 Kf8 59.f6 Kg8 60.Rc7 Kh8 61.Ng6 Kg8 62.Rg7) 57.f5 Ke7 (57...Ke8 58.Rc6 Kf8 59.f6 Kg8 60.Rc7 Kh8 61.Ng6 Kg8 62.Rg7) 58.h5 (58.Rc6 Kf8 59.f6 Kg8 60.Rc7 Kh8 61.Ng6 Kg8 62.Rg7) 58...Ke8 (58...Kd8 59.f6 Kc7 60.f7 Kb7 61.f8Q Ka7 62.Nd7 Kb7 63.Qb8) 59.h6 (59.Rg7 Kd8 60.h6 Ke8 61.h7 Kf8 62.h8Q) 59...Kd8 (59...Ke7 60.h7 Kd8 61.Rg7 Ke8 62.h8Q) 60.Rg7 Ke8 61.h7 Kd8 (61...Kf8 62.h8Q) 62.h8R (62.h8Q) 1–0. Bonetti,Shane – MacChess 5.0, 2000.

10.d3=.

9.Bc4 c5

10.d4 Nbd7 11.Nbd2 a6 12.a4 a5 13.Qe2 Ne4 14.Ne4 Be4 15.Rad1 Qc7 16.Ne5 Rac8? 17.Nd7+– Qd7 18.dc5 Qc7 19.c6 Bd6? 20.Qg4 Bh2 21.Kh1 Be5 22.Rd7 Bf5 23.Rc7 Bg4 24.Be5 1–0. pierred – Podri, ChessWorld.net, 2005.

10.d4 Nbd7 11.Nbd2 Rc8 12.Rc1 cd4 13.Nd4 Ne5 (better is 13...Nc5!?=) 14.Ne6!+/– fe6 15.Be5 Kh8 (15...Qd7!?+/–) 16.Be6+– Rc1 17.Qc1 Qa8 18.Bh3 (18.f3 Bd5 19.Bd5 Qd5+–) 18...a6 19.a4 ab5 20.ab5 Qa5 (20...Bd5 21.Rd1+–) 21.Qc7 Nd5 (21...Bd8 22.Qb7 Qd2+–) 22.Qb7 Qd2 23.Bd4 (23.Bd4 Rd8 24.Be6+– (worse is 24.Bb6 Nb6 25.Qe7 Na4+–)) 1–0. Poschmann,Hans – Nolan,Bob, Chessfriends S005, 1997.

10.d4 Nbd7 11.Qe2 cd4 12.Nd4 Rc8=.

9.Bc4 Nbd7

10.a4 Nc5 11.Nc3 Bd5 12.Bd5 ed5 13.d4 Nce4 14.Ne4 de4 15.Ne5 Bd6 16.Nc6 Qd7 17.Qc2 Qg4 18.d5 Qh5 19.g3 Qh3?? 20.Bf6+– gf6 21.Qe4 Kh8 22.Qg2 Qg2 23.Kg2 f5 24.f4 Rfe8 25.Kf3 Bc5 26.Nd4 Bd4 27.ed4 Re4 28.Rad1 Rae8 29.d6 cd6 30.Kg2 Re2 31.Kh3?? Ra2 32.Rc1 Ree2 33.Kh4 Rh2 34.Kg5 Kg7 35.Kf5 Ra4 36.d5 Rh5–+ 37.Kg4 Rh6 38.Rh1 (38...Rh1 39.Rh1–/+; 38.Ra1!? Rd4 39.Rfd1 Rd1 40.Rd1=+). stoker – willem, Live Game Caissa's Web, 2004.

10.a4 Ne4 (10...c6 11.d3=) 11.Ne5 (11.d3!? Nd6 12.a5=) 11...Ne5=+ 12.Be5 Nd6 (12...a6 13.Qg4 Bf6 14.d4=+) 13.Na3 (13.Qg4!? Bf6 14.Bf6 Qf6 15.Nc3=) 13...Nc4=+ 14.Nc4 Qd5 (14...Bg2 15.Qg4 f6 16.Qe6 Kh8 17.Kg2 fe5 18.Ne5+/– (18.Qe5 Bf6 19.Qe6 Ba1 20.Ra1 Qg5 21.Kf1 Qh4–+)) 15.Qf3 (15.Qg4 f6 16.Bc3–/+) 15...Qf3=+ (< 15...Qc4 16.Qb7 Bd6 17.d4+=) 16.gf3 Bf3 17.Bc7 Rac8 (17...Rfc8 18.Bd6 Rc4–+) 18.Bb6?? (18.Ne5 Bd5 19.Rfc1 Bc5–/+) 18...ab6 (better is 18...Rc4 19.Bd4 Rfc8–+) 19.Nb6–/+ Rc5 20.Rfc1 Rg5 (21.Kf1 Bd6=+). Zimmer,Georg – Morin, corr SOK–89–29, 1989.

10.d3 h6 11.Nbd2 Qe8 12.Rc1 Nc5 13.h3 Rd8 14.d4 Nce4+= 15.Nh4?? Nd2–+ 16.Be6?? Nf1 17.Ng6 Ne3 18.fe3 fe6 19.Nf8 Bf8 20.a4 Qg6 21.g4 Qe4 22.Kf1 Qg2 23.Ke1 Qb2 24.Rc2 Qb4 25.Kf1 c5 26.Rd2 Nd5 27.Qe2 Be7 28.Kg1 Rf8 29.Kh2 Bh4 30.Qd1 Ne3 31.Qc1 cd4 32.Rb2 Qd6 33.Kg1 Qg3 (33...Qg3 34.Rg2 Qg2) 0–1. johorean (2100) – ironhorse (2160), net–chess.com, 2005.

10.d4 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qa8 14.Nbd2 Rd8 15.Be2 Nd5 16.Qc2 g6 17.Bb2 Rc8 18.Ra1 Qb8 19.Ba3 Ba3 20.Ra3 Re8 21.Nc4 Qd8 22.Nce5 Ne5 23.Ne5 Qd6 24.Ra7 Ba8 25.Qb3 f6 26.Nd3 Kg7 27.Bf3 Kh6 28.Qc4 Rc8 29.Qc1 Kg7 30.Qa1 Qd8 31.Bg4 f5 32.Bf3 g5 33.g3 g4 34.Bg2 h5 35.Qc1 h4 36.Ne5 hg3 37.hg3 Qe8 38.e4 Ne7 39.Ra8! Ra8 40.ef5 Ra5 41.Qg5 Kf8 42.f6 Nf5 43.Bc6 Ra1 44.Kg2 Qd8 45.Nd7 Kf7 46.Qh5 Kg8 47.Qg6 Kh8 48.f7 Ne3 49.fe3 Ra2 50.Kg1 Ra1 51.Kh2 Ra2 52.Bg2 Qa8 53.Qh6 1–0. algernon (2265) – ironhorse (2225), net–chess.com, 2011.

10.Qe2= Nc5 11.d4 Nce4 12.Ne5 Qe8 13.Bd3 Nd6 14.Nc3 Rc8+= 15.e4 Nd7 16.Nc6 Ra8? 17.e5+– Nc8? 18.Qe4 g6 19.Ne7 (19.Ne7 Ne7 20.Qb7+–) 1–0. aschellen (1795) – lord_death, internet, 2006.

8.0–0 c6

9.a4 a6 10.d3=.

9.a4 Nbd7 10.d4 c5 11.Nbd2 dc4 12.Bc4 Ne4 13.Qc2 Ndf6 14.Bd3 Nd2= (14...Qd5 15.Ne4 (15.dc5 Nc5 16.Bc4 Qh5 17.h3 Nce4 18.Rfd1 Nd2 19.Nd2) 15...Ne4 16.Ne5 Nd2 17.e4 Ne4 18.f3 Nf6 19.Bc4) 15.Nd2 (15.Qd2 Rc8 (15...Ne4 16.Be4 Be4 17.Ne5 Bd6 18.f3 Be5 19.fe4) 16.dc5 Rc5= (16...Bf3 17.gf3 Rc5 18.Rac1 Qd5 19.Bd4) 17.Bd4 Bf3 18.gf3 Rg5 19.Kh1 Qd5) 15...h6 (15...cd4 16.Bd4 Qd5 17.Nf3= (17.f3 Rac8 18.Nc4 e5 19.Bb2) 17...Rfc8 18.Qe2 Ne4 19.a5) 16.Rac1 (16.dc5!? Bc5 17.Rad1+= Qe7 18.Bf6 Qf6 19.Bh7) 16...Rc8= 17.dc5 (17.Qb3 Bd5 18.Nc4 Qc7 19.Qd1) 17...Bc5 18.Bf6 (18.Qb3 Qe7 19.Nc4) 18...Qf6 19.Qb1 Rfd8 20.Be4 Rd2 21.Bb7 Rcd8 22.Rcd1? (better is 22.Bf3+=) 22...Qf2!–+ 23.Kh1 (23.Rf2 Rd1) 0–1. Schmeding,Heinrich – Filipovic,Ante, Bahn–chT Fuessen, 1993.

9.a4 Ne4 10.d3 Ng5 (10...Nf6 11.cd5 Nd5 12.Nc3=) 11.Nbd2 Bf6 12.Qb3 Nd7 13.Bc3 (13.Ng5 Bg5 14.cd5 cd5+=) 13...Rc8 (13...dc4 14.dc4 (worse is 14.Nc4 cb5 15.ab5 Bc3 16.Qc3 Nf3 17.gf3 Qg5 18.Kh1 Qb5–/+; 14.Qc4?! Bc3 15.Qc3 Rc8=) 14...Nc5 15.Qc2=) 14.Rac1 (14.Ng5 Bg5 15.cd5 cd5+=) 14...e5 (14...Nc5 15.Qb4=) 15.Qb2 (15.Ng5 Bg5 16.cd5 Nc5=) 15...Nf3= 16.Bf3 Nc5 17.Qc2 (worse is 17.Be5 Be5 18.Qe5 Nd3–/+) 17...Ne6 (17...Re8 18.Bg4 Ne6 19.Bf5=) 18.Qb1 (18.bc6!? Bc6 19.Bb4+=) 18...d4= 19.ed4 ed4 20.Bb4 Re8 21.Rfe1 (21.Rce1 Qc7=) 21...Rc7 (21...Qd7 22.Ne4 Be5 23.Qc2=) 22.Ne4 (22.c5!? Qd7 23.cb6 ab6 24.Nc4=) 22...c5+= 23.Bd2 Rce7 (better is 23...Be5+=) 24.Nf6+/– gf6 25.Bb7 Rb7 26.Re2 Rbe7 27.Rce1 Ng5 (27...Qd7 28.Qc2+/–) 28.Qd1 h6 (28...Re2 29.Re2 Ne6 30.Re1+/–) 29.Kf1 (29.Re7 Re7 30.Re7 Qe7+–) 29...Qd6 (29...Re2 30.Re2 Re2 31.Qe2+/–) 30.Re7+– Re7 31.Re7 Qe7 32.Qe2 (32.h4 Ne6+–) 32...Qe5 (32...Qf8 33.f4 Nh7 34.f5+–) 33.f4 (33.h4 Ne6 34.Bh6 Qh2 35.Qg4 Kh8+–) 33...Qe2 34.Ke2 Ne6 (34...Nh7 35.f5+–) 35.f5 Ng7 (35...Nf8 36.Bh6 Nd7+–) 36.Bf4 (36.Bh6?! Nf5 37.Bf4 Ne7+–) 36...Nf5 37.Bb8 Ne7 38.Ba7 Nc8 39.Bb8 (better is 39.a5 ba5 40.Bc5+–) 39...Kf8 40.Bc7 (40.Kf3 h5+–) 40...Ke8 (40...Ke7 41.a5 ba5 42.Ba5+–) 41.a5 ba5 42.Ba5 Nd6 (42...Kd7 43.g4+–) 43.Bc7 (43.Kf3 Kd7+–) 43...Nb7 (43...Nc8 44.g4+–) 44.g4 Kd7 45.Bf4 h5 (45...Ke6 46.Bh6 f5 47.g5+–) 46.gh5 Ke7 47.h6 Kf8 48.Kf3 Kg8 (48...f5 49.Be5 Kg8 50.Kf4+–) 49.Ke4 Kh7 50.Kd5 Kg6 51.b6 f5 52.Kc6 Nd8 53.Kd7 Ne6 (53...Nb7 54.Kc7 Na5+–) 54.b7 Nf4 55.b8Q Nd3 56.Qg3 Kh6 If Black now would get f4 in, he might survive 57.Qd3 (57.Ke7 Ne5 58.Qe5 f6 59.Qf4 Kg6 60.Qg3 Kh5 61.Kf6 f4 62.Qg5) 57...Kg5 (57...Kh5 58.Ke7 f4 59.Qf5 Kh4 60.Qf4 Kh5 61.Kf6 d3 62.Qg5) 58.Kd6 (58.Qg3 Kh6 59.Ke7 f4 60.Qf4 Kg6 61.Qg4 Kh6 62.Kf7 d3 63.Qg6) 58...f4 59.Kc5 (59.Ke5 Kg4 60.h3 Kg5 61.Qf5 Kh6 62.Kf6 f3 63.Qg5 Kh7 64.Qg7) 59...Kg4 60.Qf1 (60.Qf1 d3 61.Qd3+–; better is 60.Kd4 Kg5+–) 1–0. Labahn,Wolfgang – Ewald, Espelkamp, 1981.

9.d3 a6 10.Nc3=.

9.d3 cb5 10.cb5 a6 11.a4 a5 (11...Nbd7 12.Na3=) 12.Nbd2 Nbd7 13.d4 Rc8 14.Qb3 Re8 (14...Ne4 15.Rac1=) 15.Rac1+= Nf8 (15...Bd6 16.Rc8 Bc8 17.Rc1+=) 16.Ne5 Rc1 17.Rc1 Bb4 18.Ndf3 N8d7 (better is 18...Ne4!?+/–) 19.Nc6+– Qa8 20.Nb4 ab4 21.Qb4 Rc8 22.Ra1 White plans a5 22...Qb8 23.a5 (23.Bd3 Ne4+–) 23...ba5+/– 24.Ra5 Nb6 25.Ra3 (25.Ne5 Nfd7+–) 25...Nc4 26.Rc3 Ne4 27.Rc2 (27.Bc4?! Nc3 28.Bd3 Nd1=) 27...Ned6 28.Ne5 Ba6 29.Bc4 dc4 (29...Nc4 30.Nc4 dc4 31.Rc4 Rc4 32.Qc4 Qb5 33.Qc1+/–) 30.b6+– (worse is 30.Nc4 Nc4 31.Rc4 Rc4 32.Qc4 Qb5+/–) 30...Bb5 31.Ba3 Rd8 32.Qa5 Qa8 (better is 32...f6!? 33.Bd6 Rd6 34.Qb5 Rb6 35.Qc4 fe5+/–) 33.Qa7 Qe4? (33...Nb7 34.Nc4 Qc8 35.Rc1 Bc4 36.Qa4+–) 34.Rc1 (better is 34.Bd6 Qc2 35.Qf7 Kh8 36.h3 Qb1 37.Kh2+–) 34...Nb7 35.Nc4 Rc8?? (better is 35...Bc4 36.Rc4 Rd4 37.Rc8 Nd8+–) 36.Nd2 Rc1 37.Bc1 Qd5 38.e4 Qc6 Threatening mate: Qxc1 39.Qa8 Qe8 40.Qb7 h6 (40...Bc6 41.Qc7 Qa8 42.Nc4+–) 41.Qc7 Ba6 (41...Qc6 42.f3+–) 42.b7 Qb5 (42...Bb7 43.Qb7 Qa4+–) 43.b8Q (43.b8Q Qb8 44.Qb8 Kh7 45.Qa7+–) 1–0. Labahn,Wolfgang – Fricke, 1981.

9.cd5 cd5 10.Nc3 Nbd7 11.Rc1 Nc5 12.d4+= Nce4 13.Ne5 Nc3 14.Rc3 Rc8 15.Rc8+/– Qc8 16.Qa4 Qb8 17.Rc1 Rc8 18.Rc8 Qc8 19.Qa7 Qc2 20.Bd3 Qb2? 21.Qb8+– Bf8 22.Qb7 Qa2 23.Qf7 (23.Qf7 Kh8 24.Qf8 Ng8 25.Nf7#) 1–0. pcmvr (2830) – vhilts (2310), net–chess.com, 2010.

9.cd5 Nd5 10.Nc3 cb5 11.Nb5 a6=.

8.0–0 Nbd7

9.a4 a5 10.ba6 (10.d4 c5=) 10...Ba6+= 11.cd5 Nd5 12.Nd4 (12.Ba6 Ra6 13.Nc3 Nb4=) 12...Nb8 (12...Bb7 13.Qc2+=) 13.Nc3= Nb4 14.Ba3 Bb7 15.Bf3 c6 (15...Bf3 16.Qf3 N8a6 17.Bb4 Nb4 18.Nc6 Nc6 19.Qc6=) 16.Qb3 N8a6 17.Rab1 (17.Na2 Na2 18.Ra2 Ba3 19.Ra3 Nc5=) 17...Qd7= 18.Be2 c5 19.Bb5 (19.Nf3 Rfc8=) 19...Qd6 20.Ba6 (20.Nde2!?=) 20...Ra6–/+ (worse is 20...Na6 21.Qb6 Qb6 22.Rb6+/–; 20...Ba6?! 21.Rfd1+=) 21.Bb4 cb4 22.Ncb5 Qe5 (22...Qd5 23.Qd5 Bd5 24.Nc7 Ra4 25.Nf5+=) 23.f4 (23.Rfc1 Qd5 24.Qd5 Bd5=) 23...Qe4–/+ Do you see the mate threat? (23...Qe4 24.Rf2 Bd5–/+) 0–1. Bulcourf,Carlos (2225) – Palermo,Vicente (2355), ARG–ch CAA sf, 1986.

9.Qc2 c5 10.bc6 Bc6 11.Rc1 (11.Nd4 Bb7 12.Na3 Rc8=) 11...Rc8 12.Nd4 Bb7 13.d3 a6 14.a4 Qc7 (14...dc4!? 15.dc4 Qc7+=) 15.Nd2= Rfe8 16.Nf1 (16.g3 Ne5=) 16...Nf8 (16...dc4!? 17.Ng3 Nc5 18.dc4 Rcd8+=) 17.Qb3 Bc5 18.Bf3 e5 (18...N8d7 19.cd5 Bd5 20.Bd5 Nd5 21.Nd2=) 19.Nf5 (better is 19.cd5!? ed4 20.ed4+/–) 19...dc4 20.Rc4 (worse is 20.Qc4 Bf3 21.gf3 Qb7–/+) 20...Qd7 (better is 20...Bf3 21.gf3 Qd7=) 21.Bb7+/– Qb7 22.Rac1 (22.d4 ed4 23.ed4 Be7 24.Rc8 Qc8+/–) 22...N8d7 23.d4 (23.R4c2 Bf8 24.Rc8 Rc8 25.Rc8 Qc8=) 23...ed4= 24.ed4 Bf8 25.N1e3 Rc4 26.Qc4 (26.Nc4!? Rc8 27.f3+=) 26...g6= 27.Ng3 Kg7 (27...Bh6 28.Rc3=) 28.h3 (28.d5 b5 29.Qc6 Rb8+–) 28...h5 (28...b5 29.ab5 Qb5 30.Qb5 ab5 31.d5=) 29.Qc3 (better is 29.d5!? Bc5 30.Ne4+/–) 29...Nd5 30.Qb3 (30.Nd5 Qd5 31.Nf1 Re2=) 30...N7f6+= 31.Ngf1 Rd8 (31...Bd6 32.Rc5 Nf4 33.Rc2–/+) 32.Nc4? (32.Nd5 Nd5 (worse is 32...Rd5 33.Ne3+–) 33.Ne3 b5=) 32...Rb8 (better is 32...Nf4!? 33.d5 Ne2 34.Kh1 Nc1 35.Bf6 Kf6 36.Qc3 Ke7 37.Qe3 Kd7 38.Nb6 Kc7–/+) 33.Ne5 (33.Qf3 b5 34.ab5 Qb5=) 33...Rc8 (33...b5 34.Rc2+=) 34.Rc8 Qc8 35.Ne3 Qe6 36.N3c4 Be7 37.Bc1 Bd8 38.Qb1 Nd7 39.Nd7 (39.Bd2 Ne5 40.Ne5 Bf6=) 39...Qd7 40.Qa1 b5 41.ab5 (41.Ne5 Qe6=) 41...Qb5+= 42.Ne3 (42.Nd6 Qc6 43.Ba3 Bc7+=) 42...a5 (42...Nf4!?–/+) 43.Nd5= Qd5 44.Qa4 Bb6 Exerts pressure on the isolated pawn 45.Be3 Qe4 46.Qa1 Kh7 47.Qb2 Ba7 48.Qd2 (48.Qa2!? Bd4 49.Bd4 Qd4 50.Qf7 Kh6 51.Qf8 Kh7 52.Qf7 Kh6 53.Qf8 Kh7 54.Qf7=) 48...Qb1+= 49.Kh2 Qb4 50.Qd1 ½–½. Dias,Jose (1680) – Gama,Joao, Figueira da Foz POR, Open, 2014. (=1.Nf3 d5 2.b4 e6 3.b5 b6 4.Bb2 Bb7 5.e3 Nf6 6.Be2 Be7 7.0–0 0–0 8.c4 Nbd7)

9.Nc3 dc4 10.Bc4 Bf3 11.Qf3=.

9.Nc3 c5 10.bc6 Bc6 11.cd5 (11.Nd4 Bb7=) 11...Nd5 12.d4 (12.Nd4 Bb7=) 12...a6 (12...Nc3 13.Bc3 Rc8 14.Qd2=) 13.Nd5 Bd5 14.Qd2 (14.Bd3 b5=) 14...a5 (14...Nf6=) 15.Rac1 (15.Rfc1 a4=) 15...Rc8 (better is 15...Ba2!? 16.Qc2 a4–/+) 16.Rc8 (16.a3 Bd6=) 16...Qc8 17.Rc1 Qb7 18.Qc2 (18.a4 Rc8=) 18...Rd8 (18...Ba2 19.Bd3 f5 20.Qc7+=) 19.Bb5 (19.a3 Nf6=) 19...Nf8 (19...Bf3 20.gf3 Qf3 21.Qe2+=) 20.Qc7 (better is 20.Bc6 Bc6 21.Qc6 Qc6 22.Rc6=) 20...Qb8?? (better is 20...Qc7!? 21.Rc7 Bd6+=) 21.Qb8 (better is 21.Qe7 Ng6 22.Qa3+–) 21...Rb8+= 22.Ne5 Bb4 (22...Bd6 23.a4+=) 23.Nc4 (23.a3 Bd6+/–) 23...Bc4 (23...Ng6 24.a3 Be7 25.f3+=) 24.Bc4 (24.Rc4 Rd8+/–) 24...h6 (24...Rc8 25.a4+=) 25.e4 (25.Bb5 Ng6+/–) 25...g6 (25...b5 26.Bd3+=) 26.Kf1 (26.Bb5 f5 27.Rc7 Bd6+/–) 26...h5 (26...b5 27.Bd3+=) 27.Ke2 (27.Bb5 f5+/–) 27...Kh7 (27...b5!? 28.Bd3 a4+/–) 28.Bd3 (28.Bd3 Kg8 29.Bb5+/–; 28.Bb5 g5+/–) 1–0. Krickemeyer,Horst – Scheib,Ernst_Dr, 12sen.Woerishofen, 1996.

9.d4 a6 10.cd5 Bd5 11.Nc3=.

9.d4 c5 10.Nbd2 Qc7 (--> 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 Qc7).

9.d4 c6 10.a4 a6 11.Nbd2 ab5 12.ab5 Ra1 13.Qa1 Bb4 (13...c5 14.Rc1=) 14.bc6+= Bc6 15.cd5 Bd5 16.Bd3 (16.Qa4 Qe7+=) 16...Ba5 (16...Qa8 17.Rc1+=) 17.Qb1 (17.e4 Bb7 18.Qb1 Qe7+/–) 17...Qc7 (17...Bb7!?+/–) 18.Rc1+– Qd6 (18...Qb7 19.e4 Bc6 20.Qc2+–) 19.e4 Ba8? (better is 19...Bd2 20.Nd2 Qf4+–) 20.e5 Qd5 (20...Qb8 21.ef6 Nf6 22.Rc2+–) 21.ef6 Bd2 (21...Nf6 22.Nc4 Qh5+–) 22.Bh7 Kh8 23.fg7 Kg7 24.Be4 Qe4 (24...Qa5 25.d5 f6+–) 25.d5 Qe5 26.Ne5 Ne5 27.Be5 f6 28.Rc7 Kh6 (28...Rf7 29.Rf7 Kf7 30.Qh7 Ke8 31.Bd6 Kd8 32.Qc7 Ke8 33.Qe7) 29.Qh7 Kg5 30.Rg7 1–0. Janek – Guttesman, internet, 2017.

9.d4 Ne4 10.Nc3 f5 11.cd5 ed5 12.Ne5 (12.Qc2 a6+=) 12...Bg5 (12...Nc3 13.Bc3 a6 14.ba6 Ba6 15.Ba6 Ne5 16.Bb7+= (worse is 16.de5 Ra6 17.Qe2 Qc8+=)) 13.f4 Bh6 (13...Ne5 14.de5 (14.fe5? Be3 15.Kh1 Nf2 16.Rf2 Bf2–+; worse is 14.fg5 Nc3 15.Bc3 Qg5+=) 14...Be7 15.Ne4 fe4 16.f5=) 14.Ne4+= fe4 (14...Ne5 15.de5 fe4 16.Qc2+/–) 15.Ng4+/– Rf7 16.Nh6 gh6 The passed pawn on f4 will quickly become a dangerous weapon 17.Qe1 Rg7 18.Rc1 Nf8 19.g4 (19.Qc3!?+/–) 19...Qf6 (19...a6 20.a4+=) 20.Kh1 Rc8 (20...a6 21.a4+/–) 21.Rc2 Qe7 (21...c6 22.bc6 Rc6 23.Rc6 Bc6 24.Ba3+=) 22.Qg3 Kh8 (22...c6 23.Rfc1 Qb4 24.Bc3+/–) 23.Rfc1 Ne6 (23...h5 24.g5+–) 24.h4 (24.f5!? Nf8+–) 24...Qd6 (24...Nd8 25.Rc3+/–) 25.Kh2 Nd8 26.Rc3 Qd7 (26...Qg6 27.f5 Qf7 28.Qe5+–) 27.Ba3 (27.f5 Rf7+/–) 27...Ba8 (27...Qf7 28.f5+–) 28.Bf8 (28.g5 hg5 29.Qg4 c5 30.Qd7 Rd7+–) 28...Rf7 (28...Rg8 29.Bb4 c6 30.g5+–) 29.Bh6 c5 (29...Nb7 30.g5 Nd6 31.Qh3+–) 30.bc6 Rc6 (30...Qd6 31.Bg5 Nc6 32.f5 Qg3 33.Kg3+–) 31.Bb5 Rc3 (31...Qe6 32.Bc6 Nc6+–) 32.Bd7 Rc1 33.f5 Rd7 (33...Rf5 34.gf5 Rc2 35.Kh3 Rh2 36.Kh2 Ne6 37.Qe5 Kg8 38.Be6) 34.Qe5 Kg8 35.Qe8 1–0. Rohrbacher,W – Muemsch,K, Bad Seniorenmeister, 1994.

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 (worse is 20.Qc7 Be4 21.Nb4 gh4–/+) 20...h4 21.Nge1 (worse is 21.Qc7 Bg2 22.Kg2 Rac8 23.Qa7 Rc2–/+) 21...hg3 22.hg3 (worse is 22.Qc7 g2 23.Qb7 gf1R 24.Kf1 g4+=) 22...Nf6 23.Nb4 Bd5 (better is 23...Ng4!? 24.Nc6 a6+=) 24.Nd5 Nd5 25.Nf3 Qh5 26.Kg2 g4 27.Nh4 Kg7 28.Rh1 Qg5 29.a4 Qe7 30.Rac1 Rad8 31.Ra1 (31.Rh2 Qd6+/–) 31...Qg5 32.a5 Rf7 33.a6 Qe3 34.Qd5!? (34.fe3? Ne3 35.Kf2 Nc4–+) 34...Qf2 (34...ed5 35.fe3) 35.Kf2 Rd5 (35...ed5? 36.Rae1+–) 36.Rab1 (better is 36.Rae1!?+/–) 36...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 Marques (2035), BRA–ch66 sf2, 1999.

9.d4 Ne4 10.Nbd2 Ndf6 11.Qc2 c5 12.dc5 Nc5 (12...Bc5 13.cd5 Nd2 14.Nd2 Nd5 15.Rfd1=) 13.Rfd1 Rc8 14.Rac1 Nfe4 15.Bd4 (15.cd5 Qd5 16.Ne4 Qe4 17.Qe4 Be4= (worse is 17...Ne4 18.Rc8 Bc8 19.Ne5+/–)) 15...Bf6 (15...Bd6 16.cd5 Bd5 17.Nc4=) 16.Nf1 (16.Ne4!? Ne4 17.Bd3=) 16...Qe7+= 17.cd5 (17.Ne5 Be5 18.Be5 f6+=) 17...Bd5 (better is 17...ed5 18.Ng3 Bd4 19.ed4 Ne6=) 18.Qb2? (better is 18.Ng3!?=) 18...Na4–/+ 19.Bf6 gf6 (19...Nf6 20.Qa1 Qa3 21.Ng3–/+) 20.Qa1 Nac3 21.Re1 Qa3 (21...Na2 22.Rc8 Rc8 23.Nd4–/+) 22.Bd3 Qa2 (22...Rfd8 23.Be4 Be4 24.Ng3 Bf3 25.gf3–/+) 23.Qa2 (23.Be4!? Ne4 24.Qa2 Ba2 25.Nd4–/+) 23...Na2 24.Ra1 (24.Rc8 Rc8 25.Nd4 Nac3–/+) 24...Nec3 25.Ng3 (better is 25.e4!? Bc4 26.Bc4 Rc4 27.Ng3–+) 25...Nb4–+ 26.Bb1 Nb5 (26...Bf3 27.gf3 Nb5 28.Nh5–+) 27.Nh5 (27.e4 Bb3–+) 27...f5 (27...Bf3 28.gf3 f5 29.e4 fe4 30.fe4–+) 28.e4 (28.Ne5 Rfd8–+) 28...fe4 29.Be4 Rc4 (29...Rfd8 30.Ne5–+) 30.Ng5 (30.Nf6 Kg7 31.Bd5 ed5–+) 30...h6 31.Nf6 (31.Nh7 Rd8–+) 31...Kg7 32.Bd5 (32.Nh5 Kh8 33.Nh7–+) 32...ed5 (32...Nd5?! 33.Nd5 hg5 34.Ne3–+) 33.Ngh7 Rfc8 34.h3 (34.Re3 Rc1 35.Re1 Ra1 36.Ra1–+) 34...Nc2 35.Kh2 (35.Rab1 Nc3 36.Rf1 Nb1 37.Rb1 R8c6–+) 35...Na1 36.Ra1 R4c6 0–1. Durka,Jan (2100) – Machycek,Lubomir (2270), Tatry Open, 2006.

9.d4 Ne4 10.Nbd2 Ndf6 11.Ne4 Ne4 12.Ne5 f6 13.Nd3 (13.Nc6 Bc6 14.bc6 f5=) 13...dc4 14.Nf4 c3 15.Bc1 Qd6 16.Qb3 Bd5 (16...a6!?=) 17.Nd5+/– ed5 18.Bf3?? (better is 18.Ba3! Qa3 19.Qd5 Kh8 20.Qe4+/–) 18...f5+= 19.Be2 Rf7 (19...c5 20.bc6 Qc6 21.f3+=) 20.Bd3 (20.f3 Nd2 21.Bd2 cd2+=) 20...Raf8 Black intends f4 (20...a6 21.ba6 c5 22.Be2–/+) 21.f3 Nd2 22.Bd2 cd2 23.Rad1 f4 24.e4 (24.Bc2 fe3 25.Qe3 c5 26.bc6 Qc6 27.Qd2 Qd6=) 24...de4 25.Be4 (25.fe4 Qd4 26.Kh1 Kh8+=) 25...Qd4–/+ 26.Kh1 Rd8 27.Rf2?? (better is 27.Bh7 Kf8 28.Qc2–/+) 27...Qf2–+ (27...Qf2 28.Qb1 Bh4 29.Bh7 Kf8–+) 0–1. internet – Wall,Bill, internet, 1999.

9.d4 Ne4 10.Nbd2 Ndf6 11.Ne5 Nd2 (11...a6 12.Ne4 Ne4 13.Qc2=) 12.Qd2 dc4 (12...a6 13.a4=) 13.Bc4 Nd7 (13...a6 14.a4=) 14.Nc6 (14.Qc2 Ne5 15.de5 Bc5+=) 14...Bc6 15.bc6 Nf6 16.Ba6 e5 (16...Qd5 17.Bb7 Rad8 18.Qd3+=) 17.Bb7+/– Rb8 18.Rfd1 (18.Qe2 e4+=) 18...ed4 (18...e4 19.Qc2+=) 19.Qc2 (19.Bd4 Ne4 20.Qc2 Nd6+/–) 19...Bc5+= 20.ed4 Bd6 (20...Bb4 21.a3 Bd6 22.Qf5+=) 21.Qf5 Re8 22.Re1 Bb4 (22...Re7 23.Bc3+=) 23.Re5 (23.Re8 Qe8 24.d5 Qe4 25.Qe4 Ne4+=) 23...Qd6+/– 24.a3 Ba5 25.g3 (25.d5 Re5 26.Qe5 Qe5 27.Be5 Nd5+=) 25...Rbd8 26.Rc1 (26.Rb1 Nd5+=) 26...Nd5 27.Qe4 Re7 (27...Nf6 28.Qe3=) 28.Ba6 (better is 28.Rc2+=) 28...Rde8?? (better is 28...Nf6 29.Qf5 Ree8+=) 29.Qd5+– Re5 30.Qd6 Re1 (30...cd6?? 31.de5 de5 32.c7+–) 31.Re1 Re1 (31...cd6?? 32.Re8) 32.Kg2 cd6 33.c7 (33.c7 Re8 34.d5+–) 1–0. DEFFM – Piscomontano, freechess.org, 2018.

9.d4 h6 10.a4 Nh7 11.cd5+= Bd5 12.Nc3 c5 (12...Bb7 13.Qc2+=) 13.e4 (13.Nd5 ed5 14.dc5 Nc5+/–) 13...cd4 (13...Bb7!?+=) 14.Nd5+/– (worse is 14.ed5 dc3 15.Bc3 ed5 16.Qd5 Bf6+=) 14...ed5 15.ed5 Bc5 16.Nd4 Ndf6 17.Nf5 Qd5 (17...Ng5 18.Rc1+–) 18.Qd5 Nd5 19.Bg7 Rfe8 20.Bf3 Rad8 21.Bh6 f6 (21...Nc3 22.Rfe1+–) 22.h4 Kf7 (22...Nf8+–) 23.Bh5 Ke6 (23...Kg8 24.Be8 Re8 25.Rfe1+–) 24.Ng7 (24.Ng7 Kd7 25.Ne8 Re8 26.Rad1+–) 1–0. GuestSXJB – GuestJDWR, freechess.org, 2018.

9.d4 h6 10.Nbd2 a5 11.a4 Re8 (11...dc4 12.Nc4 c6 13.Ba3+=) 12.Rc1 Rc8 13.Qb3 Bd6 14.Ne5 Be5 15.de5 Nc5 16.Qc2 Nfd7 17.f4 (17.cd5 ed5 18.Bd4 Ne5 19.Bc5 bc5 20.Qc5 c6+=) 17...dc4 18.Qc4 (18.Bc4 c6+=) 18...Bd5 19.Qd4 Ba8 (19...Bb3 20.Bd1 Bd1 21.Rfd1+=) 20.Ba3 Qe7 21.Bf3 (21.Bc5 Nc5 22.Rfd1=) 21...Bf3= 22.Rf3 Rcd8 23.Ne4 f5? (23...Qh4 24.Bc5 Nc5 25.Qc4=) 24.Ng3 (24.Nc5 Nc5 25.Bc5 bc5 26.Qc5 Rd1 27.Rf1 Qc5 28.Rc5 Rd7+–) 24...Nf8? (better is 24...Qh4!? 25.e4 Nf6=) 25.Qc4 Rd5 (25...g6 26.Bc5 Qc5 27.Qc5 bc5 28.Rc5+–) 26.Nf5!+– Qd8 (26...ef5 Theme: Deflection from d5 27.Qd5 Theme: Double Attack) 27.Nd4 (27.Bc5?! Rc5 28.Nh6 gh6+=) 27...Qd7 28.Nc6 Rd1 29.Rf1 Rd5 (29...Rf1 30.Rf1 Nb7+–) 30.e4 (30.Bc5?! Rc5 31.Qe4 Rd5+–) 30...Rd3 31.Bc5 bc5 32.Qc5 Ng6 33.Qc4 Rd2 34.g3 (34.f5 Nh4+–) 34...Nf8 (34...Rf8 35.f5 Ne7 36.Ne7 Qe7 37.Qe6 Qe6 38.fe6 Rf1 39.Kf1+–) 35.f5 Qd3 (35...Qf7 36.fe6 Qg6 37.Rf8 Kf8 38.Rf1 Kg8 39.e7 Kh7 40.Rf8+–) 36.Qd3 Rd3 1–0. Makowski,Zbigniew – Pietrucha,Ryszard, Olsztyn Poland, 1990.

9.Nd4 h6 10.Bf3 Ne5=+ 11.cd5 Nf3 12.Qf3 Bd5 13.Qe2 e5 14.Nc6 Bc6 15.bc6 Qd5 16.Rd1 Qc6 17.Be5= Rad8 18.Bb2 Rfe8 19.d3 Qb5 20.Nc3= Qc6 21.Rac1 Qb7 22.e4 Bc5 23.Kh1 h5 24.f4 Ng4=+ 25.Rf1 g6 26.Nd1 Qa6 27.h3 Nh6 28.Nf2 Bf2 29.Rf2 Qd3 30.Qd3+/– Rd3 31.Rc7 Rd1 32.Kh2+= a5 33.e5 Nf5= 34.Re2 Rd3 35.Rf2 Red8 36.Rcc2 Ne3 37.Rce2 Nd1 38.Rf1 Nb2 39.Rb2= Rb8 40.Rfb1 Rd4 41.g3 Kf8 42.Kg2 b5 43.Kf3 b4 44.a3?? Rd3–+ 45.Kf2 Ra3 46.Rb3 Rb3 47.Rb3 a4 (47...a4 48.Rb1 b3–+) 0–1. valpa – Chopz8va, playchess.de, 2003.

9.cd5 Bd5 10.Nc3 Bb7=.

9.cd5 Nd5 10.Nc3 c5 (10...Nc3 11.dc3 a6 12.c4=) 11.bc6 (11.Nd5 Bd5 12.Qc2 Nf6=) 11...Bc6 12.Nd4 (12.Rc1 Nc3 13.Rc3 Bd5=) 12...Bb7 13.Bb5 Nc3 14.Bc3 Rc8 15.f4 Nf6 16.f5 (16.Qe2 Nd5+=) 16...Qd5 Threatening mate... how? 17.Qe2 Ne4 (17...e5 18.Nf3 Bd6 19.Rac1–/+) 18.fe6+= Nc3 (18...fe6 19.Bb2 Bf6 20.Ba4+=) 19.dc3 Rc3 20.ef7 Kh8 (20...Rf7 21.Rf7 Qf7 22.Rf1+=) 21.Nf5= Bc5 e3 gets attention (worse is 21...Qf7 22.Nd6 Qd5 23.Rad1 (23.Nb7?! Qb7 24.Rf8 Bf8=) 23...Rf1 24.Kf1+/–; 21...Rf7 22.Ne7 Re7 23.Rf8 Qg8 24.Rg8 Kg8 25.Bc4 Kh8 26.Qd2 Rce3 27.Rf1+–) 22.Rad1 Qe5 The pressure on e3 grows (22...Qf7? 23.Rd7 Qg8 24.Qb2 (worse is 24.Rb7 Rf5 25.Rf5 Re3 26.Qe3 Be3 27.Kh1 a6 28.Ba6 h6+–; 24.Ng7 Re3 25.Kh1 Re2 26.Be2 Rf1 27.Bf1 Qa2 28.Rd1 Qf2 29.Rd8 Kg7 30.Rd7 Kf6 31.Rf7 Kf7 32.Bc4 Kf6 33.Bd5 Qe1; 24.Rg7?! Qg7 25.Ng7 Be3 26.Kh1 Rf1 27.Qf1 Rc1 28.Qc1 Bc1+=) 24...Re3 25.Ne3 Be3 26.Kh1+–) 23.Kh1 g6 (worse is 23...Rf7 24.Rd8 Rf8 25.Nd6 Qd6 26.Rdf8 Qf8 27.Rf8 Bf8 28.Qd2+/–; 23...Be3?? 24.Ne3 a6 25.Bd3+–) 24.Nh4 Re3 (worse is 24...Be3 25.Rd7 Be4 26.Nf3 Bf3 27.Qf3+=) 25.Qg4 Bd6 (25...a6 26.Be8+=) 26.Qd4 Qd4 27.Rd4 Be7 (27...Bc5!? 28.Rd7 Re7–/+) 28.Bc4+= Kg7 29.Nf3 Rc8 (29...Bf3 30.gf3 Bc5 31.Re4+=) 30.Bb3 (30.Ne1 Kf8 31.Nd3 g5+=) 30...Rc7 (30...a6 31.Ng1+=) 31.Rdd1 (31.Ng1 Bf8=) 31...Re2 32.h3 Bf3 (better is 32...Kf8!?+=) 33.Rf3+= Bf8 34.Rfd3 Rce7 (34...a5 35.Rd8 a4 36.Bd5+=) 35.Rd8+/– Re1 36.Re1 Re1 37.Kh2 a5 38.Kg3 ½–½. Akopian,Vladimir (2660) – Mamedov,Nidjat (2340), Dubai op, 2000.

9.cd5 Nd5 10.Nd4 Bf6=.

9.Re1 dc4 10.Bc4 a6 11.a4=+.

9.Re1 Nc5 10.Nc3 (10.cd5 Nd5 11.d4 Ne4=) 10...dc4=+ 11.Bc4 Nd3 12.Bd3 Qd3 13.Ne5 Qf5 14.d4 Bd6 (14...a6 15.Nc6 Bd6 16.e4=) 15.Nc6 (15.Qe2 Be5 16.de5 Qe5=) 15...Bc6 16.bc6 Bh2 17.Kh2 Ng4 18.Kg1?? (better is 18.Kg3 Qf2 19.Kg4 Qg2 20.Kh4 Qb2 21.Ne2=) 18...Qf2–+ 19.Kh1 Qh4 20.Kg1 Qh2 21.Kf1 Qh1 22.Ke2 Qg2 23.Kd3 Nf2 (24.Kc4 Nd1 25.Nd1 Qc2 26.Bc3 Rad8–+) 0–1. Mantu,Eugen – Ranby,Hans, corr SOK–92–85, 1992.

7.Be2 d6

8.0–0 a6 9.a4 (9.Qc2 ab5 10.cb5 c5=) 9...c6 (9...d5 10.d3=) 10.d4 ab5 (10...Qc7 11.Nc3=) 11.ab5 Ra1 12.Ba1 cb5 13.cb5 Nbd7 (13...Qc7 14.Nc3=) 14.Nbd2 (14.Nc3 Nd5=) 14...Nd5 (14...Qa8 15.Bd3=) 15.Qc2 (15.Qb3 f5=) 15...f5 (15...N7f6 16.Bb2=) 16.Bc4 N7f6 17.Bb2 Qd7 18.Ra1 Ra8 19.Ra8 Ba8 20.Ng5 (20.Qa4 Bb7=) 20...Nc7 21.Qa4 Nfd5 22.Ngf3 Bb7 23.Qa7 Bc8 24.Qa2 Qe8 25.e4 fe4 26.Ne4 Qg6 27.Bd5 Nd5 28.Qa8 Qe4–/+ 29.Qc8 Kf7 30.Bc1 Qe2 31.h4 Qb5–/+ 32.Qc2 h6 33.h5 Nf6 34.Ba3 Qa5 35.Qb2 Nh5 36.Bb4 Qb5 37.Qd2 0–1. Fritz 8 – NN, 2005.

8.0–0 a6 9.Nc3 ab5 10.cb5 c6=.

8.0–0 a6 9.d4 Nbd7 10.Nc3 ab5 11.cb5 Ra7 (11...c5 12.bc6 Bc6 13.Qd3 (13.Qb3 Ne4 14.Rfc1 Ndf6 15.a4 Nc3 16.Bc3=) 13...b5 14.a3 Ra5 15.Nd2 Qa8 16.Rfc1=) 12.Qc2 (12.Qd3 Qa8= (12...c5 13.bc6 Bc6 14.Rfc1 Qa8 15.Rc2 e5 16.Qf5=; 12...c6 13.bc6 Bc6 14.Rfc1 Qa8 15.Rc2 e5 16.Qf5=) 13.Rfc1 (13.Rab1 Rc8 14.Rfc1 Ne4 15.a3 Nc3 16.Qc3=; 13.a3 c5 14.bc6 Bc6 15.Rfc1 Ra5 16.Rc2=) 13...Nd5 14.Nd5 Bd5 15.a3 Be4 16.Qd2=; 12.Qb3 Qa8 (12...c5 13.bc6 Bc6 14.Rfc1 Qa8 15.a4 Rc8 16.Nb5=; 12...c6 13.bc6 Bc6 14.Rfc1 Qa8 15.a4 Rc8 16.Nb5=) 13.Rfc1 (13.Rac1 Rc8 14.Rc2 Ne4 15.Ra1 Nc3 16.Bc3=; 13.a4 Rc8 14.Rfc1 Ra5 15.Ba3 Nd5 16.Bb4–/+) 13...Rc8 14.Rc2 Nd5 15.a3 Nc3 16.Rc3=; 12.Rc1 c5 13.bc6 Bc6 14.Qb3 Qa8 15.Rc2 Ne4 16.a3=; 12.Qd2 Qa8 13.a3 (13.Rfc1 Rc8 14.Qd3 Nd5 15.Qc2 Nc3 16.Bc3=) 13...Rc8 14.Rfc1 c5 15.bc6 Bc6 16.Rc2=) 12...Qa8 (12...c5 13.bc6 Bc6 14.Rfc1 Qa8 15.a3 Rc8 16.Nb5=; 12...c6 13.bc6 Bc6 14.a4 Qa8 15.Nb5 Ra5 16.Rfc1=) 13.a3 (13.Rfc1 Rc8 14.a4 c6 15.bc6 Bc6 16.Nb5=; 13.Rab1 Nd5 14.a3 Nc3 15.Qc3 Rc8 16.Rfc1=) 13...Rc8 14.Rfc1 Nd5 (14...Ra5 15.Rab1 c5 16.bc6=) 15.Qd3 (15.Bd3 N7f6 16.Ne2=) 15...Nc3 (15...N7f6 16.Na2=) 16.Rc3 Be4 17.Qd1 Nf6 18.Rac1 c5 19.bc6 Rc6 20.Rc6 Bc6 21.Qc2 Bb7 22.Qb3 Bd5 23.Qb4 (23.Qb6? Rb7 24.Qa6 Qa6 25.Ba6 Rb2–+) 23...h6 24.Qc3 (24.Qb6? Rb7 25.Qa6 Qa6 (25...Rb2? 26.Rc8 Qc8 27.Qc8 Bf8 28.Kf1+–) 26.Ba6 Rb2–+) 24...Bb7 25.Qb3 Be4 26.Ne1 (26.Qb6? Rb7 27.Qa6 Qa6 28.Ba6 Rb2–+) 26...d5 27.Bb5 Ba3 28.Bc6 Bb2 29.Ba8 Bc1 30.Qc3 Be3 31.Qc8 Kh7 32.fe3 Ra1 33.Kf2 Ng4 34.Ke2 (34.Kg3!? Ne3 35.Nf3+=) 34...Ra2–+ 35.Kf1 Nh2 (35...Ne3 36.Kg1 Ng2 37.Ng2 Rg2 38.Kf1 Rh2 39.Qc7–/+) 36.Kg1–/+ Ng4 37.Bb7 Ne3 38.Qf8 Ng4 (38...Ng2 39.Ng2 Rg2 (worse is 39...Bg2 40.Qf7 Bh3 41.Qf3 Rg2 42.Kh1+/–) 40.Kf1 Rg3–/+) 39.Qb4+= Ra1 40.Bc6 f5 41.Qd2 (41.Qc3 Rb1–/+) 41...Rb1 ½–½. Nemec,Zdenek – Woelfelschneider,Peter, TT–12 ETC, 2004.

8.0–0 c6 9.a4 a5 10.d4 cb5 11.cb5 Nbd7 12.Nbd2 Rc8 13.Qb3 Nd5 14.Nc4 Nb4 15.Rac1 Bf3 16.Bf3 (worse is 16.gf3 d5 17.Ne5 Ne5 18.de5 Bc5+=) 16...d5 17.Nd2 Rc1 18.Rc1 Qb8 19.e4 Qf4 20.Rd1 de4 21.Be4 Rc8 22.g3 Qb8 23.Nc4 Nf6 24.Bg2 Nfd5 25.Ne3 Ne3 (25...Qd6 26.Rc1 Rc1 27.Bc1=) 26.Qe3 (26.fe3 Bg5+=) 26...Bf6= 27.Be4 Rc4 28.Rc1 Qc7 (28...Rc1 29.Qc1 Qd8 30.Qe3=) 29.Rc4+= Qc4 30.Qc3 (30.Qf4 Qc8+=) 30...Qc3= 31.Bc3 Be7 32.Kf1 g6 33.Ke2 Kf8 34.Bd2 ½–½. Mueller,Klaus – Padros Simon,A, corr ICCF EU–M–703, 1987.

8.0–0 d5 9.cd5 Nd5 10.e4=.

8.a4 c5 9.0–0 d5 10.Qb3 Nbd7 11.d3 Qc7 12.Nbd2 Bd6 13.h3 (13.a5 ba5 14.cd5 Bd5=) 13...e5 14.cd5 Bd5 15.Qc2 Rad8 16.e4 Bb7 17.Nc4 h6 (17...a5 18.Rac1=) 18.a5 Ra8 19.Ra4 Rfe8 20.Rfa1 Red8 21.Qc3 Re8 22.Nh4 Bf8 23.f4 (better is 23.Nf5!?+/–) 23...ef4= 24.a6 (24.Bf3 Be7=) 24...Bd5+= 25.Bf3 Bc4 26.Rc4 Ne5 27.Rca4 Rad8 (27...Rad8 28.d4 Nf3 29.gf3 Qd7–+) 0–1. Frydendal,Odd – Drion,R, BEL–NOR, 1993.

8.d3 d5 9.Nbd2 dc4 10.dc4 Bc5 11.0–0 Nbd7 12.Qc2 a6 13.a4 a5 14.Rad1 Be4?? (better is 14...Qe7+=) 15.Ne4+– Ne4 16.Bd3 (better is 16.Qe4 Qe7 17.Qc6+–) 16...f5 17.Be2 (better is 17.Be4 fe4 18.Qe4+–) 17...Qe7+= 18.Ne5 Ne5 19.Be5 Rad8 20.Bf3 Rd1 21.Rd1 (worse is 21.Bd1 Rd8+=; 21.Qd1?! Rd8 22.Qe2 Nd2=) 21...Rd8 (21...Ng5 22.Bc6 Bd6 23.Bb2+=) 22.Be4 Rd1 23.Qd1 fe4 24.h3 Kf7 (24...h6 25.Qg4+–) 25.Qg4+– Kg8 26.Qe4 Bd6 27.Bc3 Qd7 28.Qa8 Kf7 29.Qh8 Kg6 30.h4 Bb4 31.h5 (better is 31.Bd4!?+/–) 31...Kh6= 32.Bd4 (better is 32.Bb2 Qd1 33.Kh2 Bd6 34.f4=) 32...e5–+ 33.Be5 (better is 33.Bb2!? Qd2 34.g4 Qb2 35.g5 Kh5 36.Qh7 Kg4 37.Qg7 Qb1 38.Kg2 Qe4 39.Kg1–+) 33...Qd1 34.Kh2 Qh5 35.Kg1 Qe5 0–1. GuestCLVQ – GuestQQNN, freechess.org, 2017.

8.d4 a6 9.0–0=.

8.d4 c5 9.0–0 Nbd7 10.Nbd2 d5 11.cd5 (11.Bd3 cd4 12.Bd4 Nc5=) 11...Nd5 (11...Bd5 12.Qa4=) 12.Rc1 (12.e4 N5f6 13.Qb1 cd4 14.Bd4 e5=) 12...Qc7 (12...a6 13.e4 N5f6 14.dc5 bc5 15.e5=) 13.Qb3 (13.e4 Nf4+=) 13...Bf6 (13...Rfc8 14.e4 Nf4 15.Bc4=) 14.Ne4+= Be7 15.Bd3 (15.dc5 bc5 16.Qc2 a6=) 15...N5f6 (15...a6 16.dc5 bc5 17.ba6 Ba6 18.Ba6 Ra6 19.Rfd1=) 16.Nf6+= Bf6 17.Qc2 Bf3 (17...h6 18.Rfd1+=) 18.gf3 (worse is 18.Bh7 Kh8 19.gf3 g6 20.dc5 Bb2 21.Qb2 Kh7–/+) 18...h6 19.f4 (19.Rfd1 Rac8+=) 19...Rac8 20.Bh7 (20.Rfd1 Qd8=) 20...Kh8= 21.Be4 Rfd8 (21...Qb8 22.Qd3=) 22.Rfd1 (22.f5 Qb8 23.fe6 cd4=) 22...Qb8 Black gets strong initiative 23.Qd3 (23.Qb1 cd4 24.Bd4 Rc1 25.Qc1 Nc5 26.Bf6 Rd1 27.Qd1 Ne4=) 23...cd4+= 24.Rc8 Qc8 25.Bc6 (25.Bd4!? Nc5 26.Qc2 Ne4 27.Qe4–/+) 25...Nb8–/+ 26.Qc2 Nc6 (26...d3 27.Rd3 Rd3 28.Bf6–+) 27.bc6 (better is 27.Qc6!? de3 28.Qc8 ef2 29.Kf2 Rc8 30.Bf6 gf6 31.Rd7 Rc2 32.Kg3 Rc3 33.Kh4–/+) 27...d3!–+ 28.Rd3 (28.Qd3 Rd3) 28...Rd3 29.Qd3 Bb2 30.Qd6 Kh7 31.c7 Bf6 32.e4 ½–½. Van Esbroeck,Dirk – Woischke,Norbert, CiF, 1995.

8.d4 c5 9.Nc3 d5 10.0–0 Nbd7 11.a4 (11.Rc1 Rc8=) 11...a5 12.ba6 Ba6 13.Nb5 (13.cd5 Be2 14.Qe2 ed5 15.dc5 Nc5= (worse is 15...Bc5 16.Rfd1+/–)) 13...Ne4 (13...Bb7 14.Bd3=) 14.Rb1 (14.cd5 ed5 15.dc5 Ndc5+=) 14...Nd6 (14...Bb5 15.ab5 dc4 16.Bc4=) 15.cd5+= Nb5 (15...ed5!? 16.dc5 Nc5+=) 16.ab5+/– Bb7 17.de6 fe6 18.Bc4 Bd5 19.Qc2 Nf6 20.Ne5 Bd6 (20...cd4 21.Bd4 Bd6 22.Rbc1+/–) 21.dc5 Bc5 Opening the c–file gets White a lot of play. 22.Ra1 Qe8 (22...Qc7 23.Ra8 Ra8 24.Rc1+/–) 23.Bd5 Nd5 24.Ra8 Qa8 25.Qc4 Qe8 26.h3 (26.Bd4 Bd6+/–) 26...Nc7 27.Nc6 Qd7 (27...Qh5 28.Qd3+/–) 28.Bd4 White gets the initiative 28...Bd4 29.Nd4 Rf7 (29...Qf7 30.Nc6+/–) 30.Ra1 Qd5 (30...e5!? 31.Nc6 Qd2+/–) 31.Qc6 Qc6 32.bc6 e5 33.Nf3 Re7 34.Ra7 Kf8 (34...e4 35.Ng5+–) 35.Ne5!! Re5 A deflection 36.Rc7 Rc5 37.f4 (37.Kh2 b5+–) 37...b5 38.Rb7 (38.Kf2 b4+–) 38...Rc6 39.Rb5 Rc2 40.e4 Kf7 (40...Rc4 41.Rf5 Kg8 42.Re5+–) 41.Rb7 Kf6 42.e5 Kg6 (42...Kf5 43.Rf7 Ke4 44.e6+–) 43.g4 h6 (43...Re2+–) 44.f5 Kg5 45.Rg7 Kf4 46.Kf1 (46.Rh7 Rc1 47.Kf2 Rc2 48.Ke1 Ke5 49.Rh6 Kf4+–) 46...Kf3 (46...Ke5 47.Rh7 Rc6 48.Re7 Kf6 49.Re2+–) 47.Ke1 Re2 48.Kd1 Re5 49.f6 Re4 (49...Re8+–) 50.Rh7 Rf4 (50...Re8 51.Rh6 Kf4 52.Rh5+–) 51.Rh6 Ke3 52.g5 Kd3 The mate threat is Rf1 53.Ke1 Ke3 54.Rh8 Rf5 55.g6 (55.g6 Re5 56.Rd8 Kf4 57.Kd2+–) 1–0. Tabor,James – Kane,John, Telecomm, 1995.

8.0–0 c5

9.Nc3 Nbd7 10.a4 a6 11.d4 Ne4 (11...ab5 12.ab5 Ra1 13.Ba1 cd4 14.Qd4=) 12.Qc2 (12.Ne4 Be4 13.Bd3 f5=) 12...Nc3 13.Bc3 ab5 (13...cd4 14.Nd4 Nc5 15.Rfd1=) 14.ab5 Qc7 15.Bb2 (15.Bd3 h6=) 15...Bf6 (15...cd4 16.Bd4 Rfc8 17.Ra8 Ra8 18.Bd3=) 16.Rfd1 cd4 17.ed4 (17.Bd4 Bf3 18.Bf3 Ra1 19.Ra1 d5=) 17...d5 18.Rdc1 (18.Bd3 g6=) 18...dc4 (18...Ra1 19.Ba1 Ra8 20.Bb2+=) 19.Qc4= Qc4 20.Rc4 Ra1 21.Ba1 Ra8 22.Rc1 (22.Bc3 Bd8 23.Ne5 Nf6=) 22...Kf8 (22...Bd5 23.Ne5 Bg5 24.Re1+=) 23.Ne5= Ne5 (23...Ke8 24.Nc6=) 24.de5 Bg5 25.Rd1 Ra2 26.Bf1 Rd2 (26...Bd5 27.Bd4 Bd8 28.Ra1=) 27.Rd2+= Bd2 28.Bd4 Ba5 29.Bd3 h5 (29...Ke7 30.h4+=) 30.Be2 (30.h4 Ke7+=) 30...g6 (30...h4 31.Bd3+=) 31.f4 Bd5 32.Kf2 Ke7 33.g4 (33.g3 Kd7+=) 33...hg4 34.Kg3 Kf8 (34...Be4 35.Kg4 Bf5 36.Kf3+=) 35.Kg4 (worse is 35.Bg4 Bc4–/+) 35...Kg7 36.Kg5 (36.Bf3 Bf3 37.Kf3 Kh6+=) 36...Be4 37.h4 Bf5 (37...Kf8 38.h5+=) 38.h5 gh5 (38...Bb4 39.h6 Kf8 40.h7+/–) 39.Kh5 (worse is 39.Bh5 Bd3+=) 39...Kh7 (39...Be4 40.Kg4+=) 40.Kg5 Kg7 41.Be3 ½–½. Grund,Karl – Balthasar,A, corr BdF, 1987.

9.Nc3 Ne4 10.Ne4 Be4 11.d3 Bb7 12.a4 (12.d4 a6= 13.dc5 dc5 14.Qc2=) 12...a5 (12...a6 13.Qb3= Bf6 14.Rfb1=) 13.Nd2 (13.Ra2 Nd7= 14.Nd2=; 13.Qc2 Bf6 14.d4=) 13...Nd7 (13...Bf6 14.d4=) 14.Bf3 d5 15.Rc1 Bf6 16.Bf6 Qf6 17.cd5 ed5 (17...Bd5 18.Bd5 ed5 19.d4=) 18.Qb3 Ne5 19.Bd5 (19.d4!? Nf3 20.Nf3=) 19...Bd5+= 20.Qd5 Rad8 21.Qe4 (21.Qa2 Nd3 22.Rcd1 Qb2+=) 21...Nd3 (worse is 21...Rd3 22.Nc4 Nc4 23.Qd3+– (worse is 23.Qc4 Rfd8+=; worse is 23.Rc4 Rfd8+=)) 22.Rc2? (22.Rc4 Rfe8 23.Qh4 Qh4 24.Rh4 Nb2+=) 22...Rfe8 (22...Nb4 23.Qc4 Nc2 24.Qc2–+) 23.Qg4? (23.Qf3 Qg6 24.Qg3 Qg3 25.hg3 Re6+=) 23...Nb4 24.Qc4? (better is 24.Ne4 Qe5 25.Rd2+=) 24...Nc2 25.Qc2 Qd6 26.Nc4 0–1. Hoier,Lothar – Loew,Bernd, SEM Tourn–B Saarlouis, 2004.

9.d3 Nbd7 10.a4 Qc7 11.Qc2 d5 (11...a6 12.Nbd2 (12.Na3 e5 13.Rfb1 a5 14.Re1 Rad8 15.Rac1 Rfe8 16.e4 Bc8 17.Rcd1=; 12.ba6 Ra6 13.Nc3 Rfa8 14.Nb5 Qc6 15.Rfb1 Ne5 16.Qb3 Nfg4 17.d4=; 12.Nc3 Rfe8 13.Rfb1 a5 14.Rd1 Rad8 15.Rab1 d5 16.cd5 ed5 17.d4=) 12...e5 13.Rfb1 ab5 14.ab5 d5 15.Nh4 Rfe8 16.Nf5 Bd6 17.Bf3+=; 11...e5 12.Nc3 (12.e4 Bc8 13.Nc3 a6 14.Rfb1 Qd8 15.ba6 Ra6 16.Nb5 Ne8 17.Nd2=; 12.a5 ba5 13.Bc3 d5 14.cd5 Nd5 15.Ba5 Qd6 16.Na3 Nb4 17.Qd2=; 12.Na3 a6 13.Rab1 Rfe8 14.e4 ab5 15.Nb5 Qd8 16.Nd2 Nf8 17.f4=) 12...Rfe8 13.Rfb1 a6 14.e4 Bc8 15.Bc1 Qd8 16.ba6 Ra6 17.Nb5+=) 12.Nbd2 (12.Rc1 dc4 13.Qc4 a6 14.Na3 Bd5 15.Qc3 Rfd8 16.ba6 Ra6 17.Nb5=; 12.Na3 Bd6 13.cd5 ed5 14.Rfc1 Rfe8 15.Qd2 Re7 16.Bc3 Qb8 17.Qd1=; 12.cd5 Nd5 13.Rc1 a6 14.ba6 Ra6 15.Nc3 Nb4 16.Qd2 Rfa8 17.d4=; 12.Rd1 dc4 13.dc4 a6 14.ba6 Ra6 15.Nc3 Rd8 16.Rab1 Bc6 17.Nb5=) 12...e5 (12...a6 13.cd5 Nd5 (13...ed5 14.ba6 Ra6 15.Nd4 Re8 16.Nb5 Qb8 17.Rfb1=) 14.ba6 Ba6 15.Rfb1= (15.Ne4 Bb7 16.Rfb1 Ra5 17.Ned2=) 15...Rfd8 16.Qb3 Bf6 17.Ne4=) 13.cd5+= Nd5 (13...Bd5 14.Nc4 Bd6 15.Rfd1 (15.Qc3+= Rfe8 16.e4 Bc4 17.Qc4+=) 15...Rfe8 16.e4 Be6 17.a5+=) 14.Nc4 Bf6 (14...Nb4 15.Qc3+= f6 16.a5 a6 17.ba6=) 15.Rfc1 (15.e4 Nf4+= 16.a5 Rfe8 17.Bc3+=) 15...Rfe8 (15...a6 16.Qb3= Rfd8 17.ba6=) 16.Qb1 (16.a5 Nb4 17.Qd2 Bd5+=) 16...e4 (16...a6!?= 17.Nfd2=) 17.de4+= Bb2 18.Qb2 Re4 19.a5 Nb4 (better is 19...Rd8!?+=) 20.Ncd2+– Ree8? (better is 20...ba5 21.Ne4 Be4+–) 21.Qb4!! (21.Qb4 a6 22.Nb3+–) 1–0. Maeurer,Christoph (2310) – Handke,Florian (2450), XVIII Open, Cappelle la Grande FRA, 2002.

9.d3 Nbd7 10.a4 Qc7 (10...d5 A) 11.Qc2 A1) 11...dc4 12.dc4 (12.Qc4 a6 13.ba6 Ba6 14.Qc2 Nd5 15.Nbd2 Nb4 16.Qb3 Bf6 17.Rfb1=) 12...Qc7 13.Rd1 a6 14.ba6 Ra6 15.Nc3 Rd8 16.Nb5 Qc6 17.Rd2=; A2) 11...a6 12.Na3 (12.Nbd2 Bd6 13.ba6 Ra6 14.d4 Ra8 15.cd5 ed5 16.dc5 bc5 17.Rfd1=; 12.Nc3 dc4 13.dc4 Qc7 14.Rfd1 Rfd8 15.ba6 Ra6 16.Rab1 Bc6 17.Rd2=; 12.Rd1 ab5 13.ab5 Ra1 14.Ba1 Qc7 15.cd5 Nd5 16.Nbd2 Nb4 17.Qb2=) 12...Re8 13.Rfb1 ab5 14.Nb5 dc4 15.Qc4 Nd5 16.Qg4 Bf6 17.d4=; A3) 11...Re8 12.Nc3 (12.Nbd2 Bd6 13.cd5 ed5 14.a5 a6 15.ba6 Ba6 16.ab6 Nb6 17.Nb3=; 12.a5 ba5 13.Bc3 a6 14.Ra5 ab5 15.Ra8 Qa8 16.cb5 Bd6 17.Nbd2=; 12.Rc1 dc4 13.Qc4 a6 14.ba6 Ba6 15.Qc2 Nd5 16.Nc3 Bf6 17.Nb5=) 12...Bd6 13.Rfd1 Qc7 14.cd5 ed5 15.d4 Rac8 16.Qf5 cd4 17.Rd4=; B) 11.Nc3= B1) 11...a6 12.Qb3 (12.cd5 Nd5 13.Nd5 Bd5 14.Qc2 Bf6 15.ba6 Bb2 16.Qb2 Ra6 17.d4=; 12.Qc2 dc4 13.dc4 Qc7 14.ba6 Ra6 15.Rfd1 Rd8 16.Nb5 Qc6 17.Bd3=; 12.ba6 Ra6 13.cd5 Nd5 14.Nd5 Bd5 15.e4 Bb7 16.Qb3 Qa8 17.Ne5=) 12...dc4 13.dc4 Qb8 14.Rfd1 Rd8 15.Rd2 Ng4 16.Rad1 Nde5 17.Rd8+=; B2) 11...Qc7 12.cd5 (12.Qb3 Bd6 13.cd5 ed5 14.h3 Rfe8 15.Rfc1 Ne5 16.d4 Nf3 17.Bf3=; 12.a5 dc4 13.dc4 Ng4 14.g3 a6 15.ab6 Nb6 16.ba6 Ba6 17.Nb5=; 12.Qc2 dc4 13.dc4 Bd6 14.Rad1 Rfd8 15.Rd2 Ne5 16.Ng5 Ng6 17.f4=) 12...ed5 13.d4 Bd6 14.a5 ba5 15.dc5 Nc5 16.Na4 Nce4 17.Qd4=; B3) 11...dc4 12.dc4 Qc7 13.Qc2 Bd6 14.Rad1 Rfd8 15.Rd2 Ne5 16.Ng5 Ng6 17.f4=; 10...a6 A) 11.Nc3 A1) 11...d5 12.Qb3 (12.cd5 Nd5 13.Nd5 Bd5 14.Qc2 Bf6 15.ba6 Bb2 16.Qb2 Ra6 17.d4=; 12.Qc2 dc4 13.dc4 Qc7 14.ba6 Ra6 15.Rfd1 Rfa8 16.Ng5 Ne5 17.f4=; 12.ba6 Ra6 13.cd5 Nd5 14.Nd5 Bd5 15.e4 Bb7 16.Qb3 Qa8 17.Ne5=) 12...dc4 13.dc4 Qb8 14.Rfd1 Rd8 15.Rd2 Ng4 16.Rad1 Nde5 17.Rd8+=; A2) 11...e5 12.ba6 (12.Qc2 Re8 13.Rfb1 Qc7 14.e4 Bc8 15.Bc1 Qd8 16.ba6 Ra6 17.Nd5=; 12.Qd2 Re8 13.Rfb1 Ra7 14.ba6 Ra6 15.Nb5 Ng4 16.Bc3 e4 17.de4+=; 12.Qb3 Re8 13.e4 Bc8 14.ba6 Ra6 15.Nb5 Nf8 16.Rfb1 Ne6 17.Bc1=) 12...Ra6 13.Qb3 Qc7 14.Nh4 Re8 15.Nf5 Nf8 16.Nd5 Nd5 17.cd5+=; A3) 11...Re8 12.Qc2 (12.Qb3 d5 13.ba6 Ra6 14.Nb5 Qb8 15.cd5 Bd5 16.Qc3 Qb7 17.Rfb1=; 12.Qd2 d5 13.cd5 ed5 14.ba6 Ra6 15.Rfc1 Bc6 16.Nb5 Bb7 17.Bc3=; 12.ba6 Ra6 13.Nb5 d5 14.Qb3 Qb8 15.cd5 Bd5 16.Qc3 Rd8 17.Rfb1=) 12...d5 13.ba6 Ra6 14.cd5 ed5 15.Nb5 Nf8 16.Be5 Ne6 17.d4=; B) 11.ba6 B1) 11...Bc6 12.d4 (12.Na3 Ra6 13.Nb5 d5 14.Qb3 dc4 15.dc4 Qb8 16.Rfd1 Rd8 17.Nd2=; 12.Nc3 Ra6 13.Nb5 d5 14.Qb3 dc4 15.dc4 Qb8 16.Rfd1 Rd8 17.Ng5=; 12.Qb3 Ra6 13.Nc3 Re8 14.d4 cd4 15.Nd4 Bb7 16.Qd1 Nc5 17.Bf3+=) 12...Qc8 13.Nc3 Ra6 14.d5 Bb7 15.e4 Ne8 16.Qc2 Bf6 17.Rfb1=; B2) 11...Ra6 12.Na3 (12.Nc3 Ng4 13.Qb3 Bf6 14.Nd2 Bc3 15.Bc3 Qh4 16.h3 Nge5 17.f4=; 12.Qc2 d5 13.Nc3 dc4 14.dc4 Qa8 15.Nb5 Be4 16.Qb3 Qc6 17.Nc3=; 12.Qb3 d5 13.Nc3 dc4 14.dc4 Qb8 15.Rfd1 Rd8 16.Nb5 Ng4 17.h3=) 12...Ng4 13.Nb5 d5 14.cd5 Bd5 15.e4 Bc6 16.d4 Be4 17.Nc3+=; B3) 11...Ba6 12.Nc3 (12.Qb3 d5 13.Na3 Bb7 14.Nb5 Qb8 15.Rfb1 Rd8 16.cd5 Bd5 17.Qc2=; 12.Nbd2 d5 13.Qb3 Ra7 14.Rfb1 Bb7 15.d4 Qc7 16.Bc3 dc4 17.Bc4=; 12.Na3 Bb7 13.Nb5 d5 14.Qb3 Qb8 15.cd5 Bd5 16.Qc2 e5 17.Bc3=) 12...Bb7 13.Qb3 d5 14.Nb5 Qb8 15.cd5 Bd5 16.Qc2 Rd8 17.Rfb1=) 11.Qc2 (11.Nc3 A) 11...a6 12.Re1 (12.Qc2 Rfe8 13.Rfb1 e5 14.e4 Bc8 15.Bc1 Ra7 16.a5 ba5 17.Bd2=; 12.Rb1 d5 13.ba6 Ra6 14.cd5 Nd5 15.d4 Nc3 16.Bc3 Ra7 17.Bb5=; 12.Qb3 d5 13.cd5 Nd5 14.ba6 Ra6 15.Nb5 Qd8 16.Rfc1 Qa8 17.Bd1=) 12...d5 13.ba6 Ra6 14.cd5 Nd5 15.Nb5 Qc6 16.d4 Bf6 17.e4=; B) 11...Rfe8 12.Qc2 (12.Qb3 e5 13.e4 a6 14.Rfb1 a5 15.Qc2 Rac8 16.Rc1 Qd8 17.Rab1+=; 12.Re1 e5 13.Qc2 a6 14.Reb1 ab5 15.Nb5 Qc6 16.Ne1 d5 17.Bf3=; 12.Rb1 d5 13.cd5 Nd5 14.Nd5 Bd5 15.e4 Bb7 16.Qc2 Red8 17.Rfd1=) 12...e5 13.e4 a6 14.Rfb1 ab5 15.ab5 Nf8 16.Bc1 Ng6 17.Be3+=; C) 11...a5 12.Rb1 (12.Qc2 Rad8 13.Rfe1 Ne5 14.Nd2 d5 15.cd5 ed5 16.d4 Neg4 17.Nf1=; 12.Rc1 Rad8 13.Qc2 Ne5 14.Nd2 Rfe8 15.f4 Neg4 16.Nd1 d5 17.d4=; 12.Qb3 Rad8 13.Rae1 d5 14.cd5 Nd5 15.Rc1 Bf6 16.d4 cd4 17.Ne4=) 12...Rad8 13.Rc1 d5 14.cd5 Nd5 15.Nd5 Bd5 16.Qc2 e5 17.e4=; 11.Na3 A) 11...Rfd8 12.Re1 (12.Qd2 d5 13.cd5 Bd5 14.e4 Bb7 15.a5 a6 16.ab6 Nb6 17.Be5=; 12.Qc1 d5 13.Qc3 Bd6 14.cd5 ed5 15.Qc2 Ng4 16.h3 Ngf6 17.Rac1=; 12.Qc2 Ne5 13.e4 Nf3 14.Bf3 Nd7 15.Qc1 Bf6 16.Bf6 Nf6 17.Qg5=) 12...Ne5 13.Bc3 Nf3 14.Bf3 Bf3 15.Qf3 d5 16.a5 Rac8 17.e4+=; B) 11...Rfe8 12.Qb3 (12.Qc2 a6 13.Rab1 e5 14.e4 ab5 15.Nb5 Qc6 16.Nd2 Nf8 17.f4=; 12.Qd2 e5 13.e4 a6 14.Rfb1 a5 15.Bc1 Rad8 16.Nc2 Nf8 17.Ne3=; 12.e4 Rad8 13.Qc1 d5 14.e5 Ng4 15.Qf4 Nh6 16.Bc1 Nf8 17.h3+=) 12...e5 13.e4 a5 14.ba6 Ra6 15.Nb5 Qc6 16.Nd2 Rea8 17.f4=; C) 11...e5 12.Nh4 (12.Qc2 a5 13.e4 Ng4 14.Nd2 f5 15.Bg4 fg4 16.f3 gf3 17.Nf3+=; 12.Qd2 a5 13.Nh4 d5 14.Nf5 Rfe8 15.e4 de4 16.Qg5 Bf8 17.Nh6=; 12.e4 Ne8 13.Nd2 f5 14.Bf3 fe4 15.Be4 Nef6 16.Bb7 Qb7 17.Qe2=) 12...d5 13.Nf5 Rfe8 14.cd5 Bd5 15.Bf3 Qb7 16.Bd5 Qd5 17.a5=) 11...d5 (11...a6 12.Nbd2 (12.Na3 e5 13.Rfb1 a5 14.Re1 Rad8 15.Rac1 Rfe8 16.e4 Bc8 17.Rcd1=; 12.ba6 Ra6 13.Nc3 Rfa8 14.Nb5 Qc6 15.Rfb1 Ne5 16.Qb3 Nfg4 17.d4=; 12.Nc3 Rfe8 13.Rfb1 a5 14.Rd1 Rad8 15.Rab1 d5 16.cd5 ed5 17.d4=) 12...e5 13.Rfb1 ab5 14.ab5 d5 15.Nh4 Rfe8 16.Nf5 Bd6 17.Bf3+=; 11...e5 12.Nc3 (12.e4 Bc8 13.Nc3 a6 14.Rfb1 Qd8 15.ba6 Ra6 16.Nb5 Ne8 17.Nd2=; 12.a5 ba5 13.Bc3 d5 14.cd5 Nd5 15.Ba5 Qd6 16.Na3 Nb4 17.Qd2=; 12.Na3 a6 13.Rab1 Rfe8 14.e4 ab5 15.Nb5 Qd8 16.Nd2 Nf8 17.f4=) 12...Rfe8 13.Rfb1 a6 14.e4 Bc8 15.Bc1 Qd8 16.ba6 Ra6 17.Nb5+=) 12.Nbd2 (12.Rc1 dc4 13.Qc4 a6 14.Na3 Bd5 15.Qc3 Rfd8 16.ba6 Ra6 17.Nb5=; 12.Na3 Bd6 13.cd5 ed5 14.Rfc1 Rfe8 15.Qd2 Re7 16.Bc3 Qb8 17.Qd1=; 12.cd5 Nd5 13.Rc1 a6 14.ba6 Ra6 15.Nc3 Nb4 16.Qd2 Rfa8 17.d4=; 12.Rd1 dc4 13.dc4 a6 14.ba6 Ra6 15.Nc3 Rd8 16.Rab1 Bc6 17.Nb5=) 12...e5 (12...a6 13.cd5 Nd5 (13...ed5 14.ba6 Ra6 15.Nd4 Re8 16.Nb5 Qb8 17.Rfb1=) 14.ba6 Ba6 15.Rfb1= (15.Ne4 Bb7 16.Rfb1 Ra5 17.Ned2=) 15...Rfd8 16.Qb3 Bf6 17.Ne4=) 13.cd5+= Nd5 (13...Bd5 14.Nc4 Bd6 15.Rfd1 (15.Qc3+= Rfe8 16.e4 Bc4 17.Qc4+=) 15...Rfe8 16.e4 Be6 17.a5+=) 14.Nc4 Bf6 (14...Nb4 15.Qc3+= f6 16.a5 a6 17.ba6=) 15.Rfc1 (15.e4 Nf4+= 16.a5 Rfe8 17.Bc3+=) 15...Rfe8 (15...a6 16.Qb3= Rfd8 17.ba6=) 16.Qb1 (16.a5 Nb4 17.Qd2 Bd5+=) 16...e4 (16...a6!?= 17.Nfd2=) 17.de4+= Bb2 18.Qb2 Re4 19.a5 Nb4 (better is 19...Rd8!?+=) 20.Ncd2+– Ree8? (better is 20...ba5 21.Ne4 Be4+–) 21.Qb4!! (21.Qb4 a6 22.Nb3+–) 1–0. Maeurer,Christoph (2310) – Handke,Florian (2450), XVIII Open, Cappelle la Grande FRA, 2002.

9.d3 Nbd7 10.Nc3 a6=.

9.d4 a6=.

9.d4 cd4 10.Nd4 Qc7 11.Nd2 g6 12.Qb3 (12.Bf3 e5 13.Bb7 Qb7=) 12...e5 13.Nc2 Nbd7 14.Nb4 Nc5 15.Qc2 Rad8 16.Rfd1 d5 (16...a6!?+=) 17.Nf3+= Ncd7? (17...d4 18.ed4 ed4 19.Nd4+=) 18.cd5 (18.Nc6 Bc6 19.cd5+– (19.bc6?! Qc6 20.Rac1 e4=)) 18...Qc2+= 19.Nc2 Bd6 (19...Rc8 20.d6 Bd6 21.Rac1+=) 20.Na3+/– e4 21.Nd4 Bd5 22.Nc6 Rde8 23.Rd5 (better is 23.Rd2!? Bc5 24.Nc2+/–) 23...Nd5+= 24.Rd1 Ba3 25.Ba3 Nc3 26.Rd7 Ne2 27.Kf1 Nc3 28.Bb2 Na4 (28...Na2? 29.Ra7 Nc1 30.Bc1+–; worse is 28...Nb5 29.a4 Nd6 30.Rd6+=) 29.Bf6 h6 30.Be7 (worse is 30.Na7 Nc5 31.Rc7 Ra8+=) 30...Nc3 31.Nd4 (31.Ra7 Nb5 32.Rb7 Nc3=) 31...Na2 32.Bf8 Kf8 33.Ra7 Nc3 34.Ra6 Nd5 35.Ke1 Rc8 36.Kd2 Rc5 37.Ra8 Kg7 38.Rb8 h5 39.Re8 Nc3 Attacking the isolated pawn on b5 40.Rb8 Nb5 41.Rb6 Na3 42.Rb7 Kf6 43.h4 Nc4 44.Ke2 Ra5 45.g3 Ra2 46.Kf1 Ne5 47.Rb6 Kg7 48.Ne2 Nf3 49.Rb4 (49.Rc6 Rb2+=) 49...Nh2 (49...Ra1 50.Kg2–/+) 50.Ke1+= Ra1 51.Kd2 Ra2 52.Kd1 (52.Ke1 Ng4+=) 52...Nf3 (52...Ng4!? 53.Ke1 Ra1 54.Kd2 Nf2–/+) 53.Nc3+= Rd2 54.Kc1 Rf2 55.Ne4 Re2 56.Rb3 Ne5 57.Kd1 Rg2 58.Ke1 f5 59.Rb7 Kf8 60.Rb8 Ke7 61.Rb7 Ke6 62.Ng5 Kd6 63.e4 Rg3 64.ef5 gf5 65.Rh7 Kd5 (65...Nd3 66.Kf1+=) 66.Rh5= Kd4 67.Kf2 Rc3 68.Rh8 Ng4 69.Ke2 Re3 70.Kd2 Rg3 71.Rd8 Ke5 72.Re8 Kf6 73.Rf8 Kg6 74.Rg8 Kf6 75.Rf8 Ke5 76.Re8 ½–½. Morriss,P (2005) – Mihajlov,Sebastian (2050), Dublin IRL, Easter Masters, 2012.

8.0–0 Nbd7

9.a4 a5 10.d3 (idea Nbd2, Bb3, Ba3, Rc1, d4).

9.a4 d5 10.a5 (10.cd5 Nd5 11.Nc3 a6=) 10...dc4+= 11.a6 Bd5 12.Na3 Nc5 (12...Rc8 13.Nc4 c6 14.bc6 Rc6 15.Na3=) 13.Nc4 c6 14.bc6 Bc6 15.Nce5 (15.d4 Ncd7=) 15...Bd5 16.d4 (16.Rc1 Rc8=) 16...Nce4 17.Nd2 (17.Rc1 Qd6=) 17...Rc8 18.Rc1 Bb4 (18...Rc1 19.Qc1 Nd2 20.Qd2=) 19.Ndf3 (19.Rc8 Qc8 20.Ne4 Ne4=) 19...Nc3 (19...Rc1 20.Qc1 Qa8 21.Qa1=) 20.Bc3 Bc3 21.Qa4 (21.Ng5 h6 22.Qd3 Qc7=) 21...Ne4 22.Rc2 (22.Bd3 Rc7=) 22...f6+= 23.Nc4 (23.Nd3 Qe8 24.Qa3 Qb5+=) 23...Qe8 (23...b5 24.Qb5 Rb8 25.Qa4+=) 24.Qe8 Rfe8 25.Nfd2?? (better is 25.Na3+=) 25...Bd2–+ 26.f3 (26.Bd3 Bb4 27.Rb1–+) 26...Bc4 27.fe4 (27.Bc4 Be3 28.Kh1 Nd6–+) 27...Be2 (27...Be3 28.Kh1 Ba6 29.Rc8 Bc8 30.Rd1–+) 28.Rd2 Bf1 29.Kf1 0–1. Turcot,J – Tremblay,S, Sainte–Foy Canada, 1996.

9.Nc3 a5 10.d4+= d5 11.a4 (11.Rc1 c5=) 11...Re8 (11...dc4 12.Bc4 Rc8 13.d5 ed5 14.Nd5=) 12.Qc2 (12.Qd3+=) 12...g6 (12...dc4 13.Bc4 Bf3 14.gf3=) 13.Rfd1 (13.cd5 Nd5 14.Nd5 ed5+/–) 13...Ne4 (13...c6 14.cd5 Nd5 15.Rac1+=) 14.Ne4+/– de4 15.Nd2 Nf6 16.c5 (16.Ba3+/–) 16...bc5 (16...Bd5!?+/–) 17.dc5+– Bd5 18.Rac1 White intends c6 18...Nd7 (18...Qb8 19.Bf6 Bf6 20.Ne4+–) 19.c6 (19.Ne4 Rb8+–) 19...Nc5 (19...Nf6 20.Bf6 Bf6 21.Ne4+–) 20.Bd4 Nd3 21.Bd3 ed3 22.Qd3 Bb4 (22...Bg2 23.Kg2 e5 24.Nc4 ed4 25.Qd4+–) 23.Nc4 (23.Ne4 e5 24.Bb6 Be4 25.Qe4 Qb8+–) 23...f6 (23...Qh4+–) 24.e4 Bc4 25.Qc4 Kf7 (25...Qe7 26.Rd3+–) 26.Bc5 Qd1 (26...Qc8+–) 27.Rd1 Red8 28.Rd7 Rd7 29.cd7 Rd8 (29...Bc5 30.Qc5 Rd8 31.Qc7+–) 30.Qb4 (better is 30.Bb4 ab4 31.Qc7+–) 30...ab4+= 1–0. Roos,G – Voss,Rodolphe, BS–PCSI, 1995.

9.Nc3 a6 A) 10.Rc1 A1) 10...Ra7 11.a3 (11.d3 Nc5 12.a3 Qd7 13.Qc2 Re8 14.Rfe1=; 11.d4 Ne4 12.Ne4 Be4 13.Nd2 Bb7 14.a3=; 11.Qc2 Qa8 12.d3 ab5 13.Nb5 Ra2 14.Nc7=; 11.Re1 ab5 12.cb5 c6 13.a4 c5 14.Qc2=; 11.Rc2 Ne5 12.d3 Qd7 13.Ne5 de5 14.Rd2=) 11...e5 12.d4 Re8 13.Qc2 ed4 14.Nd4=; A2) 10...Qe8 11.d4 (11.Nd4 Nc5 12.a3 d5 13.cd5 Nd5 14.Nd5=; 11.d3 e5 12.d4 e4 13.Nd2 ab5 14.Nb5=; 11.a3 e5 12.d4 ab5 13.Nb5 Bd8 14.de5=) 11...Rc8 12.ba6 Ba6 13.e4 Bb7 14.Bd3+=; A3) 10...Re8 11.d4 (11.a4 e5 12.d4 Ra7 13.Qc2 ed4 14.ed4=; 11.Qc2 Ne5 12.Ne5 de5 13.Rfd1 c5 14.d3=; 11.Re1 e5 12.d4 e4 13.Nd2 ab5 14.cb5=) 11...d5 12.Ne5 dc4 13.ba6 Ra6 14.Bc4=; A4) 10...e5 11.d4 ab5 12.cb5 e4 13.Ng5 d5 14.f3=; A5) 10...d5 11.cd5 ed5 12.a4 Re8 13.d4 ab5 14.ab5=; A6) 10...Ne5 11.Nd4 (11.d3 Qd7 12.e4 Rfc8 13.d4 Nf3 14.Bf3=; 11.Re1 ab5 12.cb5 Nf3 13.Bf3 d5 14.d3=; 11.a4 Ra7 12.d3 Qd7 13.e4 Rfa8 14.d4=) 11...c5 12.bc6 Nc6 13.Bf3 Qd7 14.Nc6=; A7) 10...ab5 11.cb5 Nd5 12.a3 Nc3 13.Rc3 Ra5 14.Qc2=; B) 10.Nd4 ab5 11.cb5 Nb8 12.Rc1 c5 13.bc6 Nc6 14.Bf3=.

9.Nc3 Nc5 10.d4 Nce4 11.Ne4 Ne4 12.Qd3 (12.Nd2 a6=) 12...f5 13.d5 (13.Nd2 a6=) 13...ed5 14.cd5 Qe8 15.Rac1 (15.Nd2 Nc5 16.Qc4 a6=) 15...Nc5+= 16.Qc3 (16.Qd1 a6 17.ba6 Ba6+=) 16...Bf6–/+ 17.Qc2 Bb2 18.Qb2 Bd5 19.Rfd1 Bb7 20.Bc4 Kh8 21.Ng5 (better is 21.Nd4!?–/+) 21...Qg6–+ 22.Ne6?? Qg2 0–1. Neumann,Frank – Garcia,Javier, OP–2012–0–02344, 2012.

9.Nc3 c6 10.d4 h6 11.bc6 Bc6 12.Bd3 Qc7 13.e4 e5 14.Nd5 Bd5 15.cd5 Nh7 16.Rc1+– Qb8 17.Bb5 Qd8 18.de5 Nc5 19.ed6 Qd6 20.e5 Qg6 21.d6 Bd8 22.Nd4 Ng5 23.f4 Nge4 24.Bc6 Rc8 25.Bd7! Rb8 26.Bf5 1–0. pcmvr (2860) – vcekota (2165), net–chess.com, 2011.

9.Nc3 Qe8 10.d4 A) 10...c5 11.d5 a6 12.ba6 Ra6 13.e4 Qa8 14.Nb5+=; B) 10...c6 11.Bd3 (11.Rc1 a6 12.bc6 Bc6 13.Qb3 Qb8 14.Ba3=; 11.Qd3 cb5 12.Nb5 Qd8 13.Nc3 Rc8 14.Rfc1=; 11.a4 a6 12.Qb3 Qd8 13.Bd3 cb5 14.ab5+=) 11...cb5 12.cb5 a6 13.Qe2 ab5 14.Nb5+=; C) 10...a6 11.a4 c5 12.bc6 Bc6 13.Qd3 Qd8 14.e4+=.

9.Nc3 Re8 10.a4 a6 11.Qc2 (11.d4 e5 12.d5 Nc5 13.Qc2 Bc8 14.e4=) 11...c6 (11...e5 12.d4 ed4 13.Nd4 Nc5 14.Nf5+=) 12.bc6 (12.Rfb1 Qc7 13.bc6 Bc6 14.e4=) 12...Bc6 13.a5 (13.Rfb1 Rc8 14.a5=) 13...ba5 14.Nd4 (14.Rfb1=) 14...Bb7 15.Nb3 a4 16.Na4 Qc7 17.Bc3 Rac8 18.Rfb1 Be4 (18...e5 19.Qd1=) 19.d3 Bg6 20.Qa2 Rb8 21.Ba5 Qc8 22.Nd2 Rb1 23.Rb1 Ne5 (23...d5 24.Bb4=) 24.e4+= Nfd7 25.Nb6 Qc6 26.Nd7 Nd7 27.Bd1 Rb8 28.d4 (28.Rb8 Nb8 29.Bc3 Qc7+=) 28...Bg5 (28...Rb1 29.Qb1 Bg5 30.d5+=) 29.Ba4 (29.Rb8!? Nb8 30.e5 de5 31.Nf3=) 29...Qc8?? (better is 29...Rb1 30.Nb1 Qe4 31.Bd7 Qb1 32.Qb1 Bb1+=) 30.Nf3 ½–½. Rosin,Ralf (2330) – Schreiber,Kurt (2445), corr ICCF, 1996.

9.Nc3 Re8 10.Rc1 a6 11.d4 (11.Qc2 Ne5 12.e4 Nf3 13.Bf3 ab5 14.cb5=; 11.Re1 e5 12.d4 e4 13.Nd2 ab5 14.cb5=; 11.a3 e5 12.d4 ab5 13.cb5 Ra7 14.d5=; 11.d3 e5 12.d4 ab5 13.cb5 e4 14.Ne1=; 11.a4 e5 12.d4 Ra7 13.Qd2 ed4 14.Nd4=; 11.Nd4 ab5 12.cb5 Nc5 13.Qc2 Nd5 14.Nd5=) 11...ab5 12.cb5 c5 13.bc6 Bc6 14.Bd3=.

9.Nc3 Re8 10.d4 A) 10...c6 11.Qd3 (11.Rc1 a6 12.bc6 Bc6 13.Bd3 Qc7 14.e4=) 11...cb5 12.cb5 a6 13.a4 Qb8 14.e4+=; B) 10...a6 11.Qc2 (11.Qd3 ab5 12.cb5 c6 13.bc6 Bc6 14.e4=; 11.Bd3 e5 12.e4 ed4 13.Nd4 Nc5 14.f3=) 11...ab5 12.cb5 c5 13.bc6 Bc6 14.Rfc1=.

9.Nc3 Re8 10.Nd4 a6 11.Nc6 Qc8 12.d4 ab5 13.cb5 Bc6 14.bc6+=.

9.Nc3 Re8 10.Nd4 e5 11.Nc6 Bc6 12.bc6+=.

9.Nc3 Re8 10.Nd4 Bf8 11.f4+= e5 12.Nb3 (12.Nc6 Bc6 13.bc6 Nc5+/–) 12...d5 (12...a6 13.Qc2=) 13.Bf3 (13.cd5!? ef4 14.Rf4 Nd5 15.Nd5 Bd5 16.Bf3+=) 13...e4+= 14.Be2 Nc5 15.Nc5 Bc5 16.cd5 Nd5 17.Nd5 (17.Bc4 Qd7=) 17...Bd5+= 18.Qc2 Re7 (18...c6 19.Qc3 f6 20.bc6+=) 19.a4 Qd6 20.Be5 Qd7 21.a5 c6 22.Rfb1 Rc8 23.Qb2 (23.d4 ed3 24.Qd3 Be6=) 23...f6+= 24.Bc3 cb5 25.Bb5 Qe6 26.a6 (26.Bd4 Bd4 27.Qd4 Rec7+=) 26...Rec7–/+ 27.Bb4 h6 (27...Bb4 28.Qb4 f5 29.Rb2–/+) 28.Bc5+= Rc5 29.Rc1 Bc4 30.Bc4 Rc4 31.Rc4 Qc4 32.Qa2 (32.Qa3 Qd3 33.Qe7 Rc2 34.Qa7 b5+=) 32...f5 33.Kf2 Kf7 (33...b5 34.Qb2–/+) 34.Qb2+= Rc5 35.Ra3 Qc1 36.Qb3 (36.Qc1 Rc1 37.d4 Rc2 38.Kg3 Ke6+=) 36...Ke7 (36...Kg6 37.d4 Rc2 38.Kg3 Qe1 39.Kh3–+) 37.Ra2 Qc4 38.Qb2 Kf8 39.Ra3 Qc1 40.Qb4 (40.Qc1 Rc1 41.d4 Ke7+=) 40...h5 (40...Kg8 41.d4 Rc2 42.Kg3–+) 41.Ra2 (41.d4!? Qc4 42.Qe1=) 41...Qc4+= 42.Qb2 h4 43.h3 (43.Ra3 Kg8+=) 43...Kg8–/+ 44.g4 (44.Ra3 Qc2 45.Qd4 Kh7–/+) 44...hg3 45.Kg3 Qe2 46.Qb3 Kh7 (46...Kh8 47.d4 Qe1 48.Kh2–+) 47.d4 Qe1 48.Kg2 Rc1 Do you see the mate threat? (48...Rc1 49.Qg8 Kg8 50.h4 Qh1 51.Kg3 Qf3 52.Kh2 Rh1) 0–1. Bravo Ardila – Lopez Perez, corr Spain, 1989.

9.d3 a6 10.a4 ab5 11.ab5 Nc5 12.Nbd2 Qd7 13.Qc2 e5 14.d4 ed4 15.Nd4 Nfe4 16.Bf3 f5 17.N4b3 Qe6 18.Nd4 Qg6 19.Nc6 Bf6 (19...Bc6!? 20.bc6 Bf6 21.Bf6 Nf6=) 20.Ra8+= Ra8 21.Bf6 Bc6 22.Bd4 Bb7 23.g3 Qe8 24.Ra1 Ra1 25.Ba1 Qa8 26.Bd4 Qa5 27.Bc5?? (better is 27.Nf1=) 27...Nd2–+ (27...Nd2 28.Bd1 Be4–+; 27...Nc5 28.Bb7 Nb7 29.Qf5 Qa1 30.Kg2+–) 0–1. Nemeth,Laszlo1 (1985) – Pongo,Istvan (1820), HUN–chT2 Erkel, 2007.

9.d3 a6 10.a4 Re8 11.Nbd2 Bf8 (11...e5 12.d4=) 12.Qc2 g6 (12...e5 13.d4=) 13.d4+= Bg7 14.Rac1 a5 (14...e5 15.Qd3=) 15.Ba3 (15.e4 c6+=) 15...Bf8 (15...Rc8 16.c5 dc5 17.dc5 bc5 18.Bb2+=) 16.Rfd1 Qc8 17.Nb3 (17.e4 e5 18.d5 Nc5+/–) 17...Be4 18.Qc3 Rb8 (18...e5 19.c5+=) 19.c5 Nd5 20.Qd2 dc5 21.Ng5 c4 (21...Bf5 22.e4 c4 A) 23.ef5?! cb3 24.fe6 fe6 25.Bf8 Nf8+=; B) < 23.ed5 Ba3 (< 23...cb3 24.de6 fe6 25.Bf8 Nf8 26.Qb2+=) 24.de6 Be6 25.Rc4 Bd5–/+; C) 23.Bf8 cb3 24.Bh6+– (24.ef5?! Nf8 25.fg6 Ng6+=)) 22.Bf8 (22.Rc4 Ba3 23.Ne4 Qb7+/–) 22...Nf8 (better is 22...cb3!? 23.Ne4 Rf8+/–) 23.Rc4+– Nf6 24.Ne4 Ne4 25.Qc2 Nf6 (25...Nd6 26.Rc7 Qd8 27.Rc1+–) 26.Rc7 Qd8 27.Bf3 Nd5 28.Bd5 Qd5 29.Nd2 Nd7 (29...Rb7 30.Rc3+–) 30.Ne4 (30.e4!? Qd6 31.Qc6 Qc6 32.bc6 Nf6+–) 30...e5?? (30...Kg7+–) 31.Rd7! (31...Qe6 32.Rd6+–) 1–0. Sternik,Ryszard – Lozinski,J, corr 1.AMM Poland, 1991.

9.d3 e5 10.Nbd2 e4 (10...a6 11.a4=) 11.Ne1 ed3 12.Nd3 Ne4 13.Ne4 Be4 14.Bf3 f5 15.Be4 fe4 16.Nf4 Nc5 17.Qd5 Kh8 18.Ba3 (18.Ne6 Ne6 19.Qe6 a6+/–) 18...Bf6+= 19.Rad1 Qe7 20.Bc5 bc5 21.Qc6 Rfc8 22.Nd5 Qe6 23.a4 Be5 24.a5 g5 25.f3 Qh6 26.f4 gf4 27.Nf4 Rf8 (27...a6 28.ba6 Ra7 29.Rb1+/–) 28.g3 Rae8 29.Qc7 d5 (29...a6 30.Qc6 ab5 31.cb5+–) 30.Qc5 d4?! (30...dc4 31.Qa7 Qg5 32.Rd7+–) 31.Rd4 (31.Qa7 d3+–) 31...Bd4 32.Qd4 (worse is 32.ed4 e3 33.Qc7 Qg5+–) 32...Kg8 33.Qa7 Ra8 34.Qb6 Rf6 (34...Qb6 35.ab6 Rac8 36.Nd5 Rf1 37.Kf1+–) 35.Qc7 (better is 35.Qc5!? Re8+–) 35...Rf7 36.Qb6 Rf6 37.Qb7 Ra5 (37...Re8 38.a6 Kh8 39.Qd7+–) 38.Qc8 (better is 38.Qd5 Rf7 39.Qd8 Qf8 40.Qa5+–) 38...Rf8 39.Qe6 (39.Qd7!? Ra2 40.Qd5 Kh8 41.Qe5 Kg8+–) 39...Qe6 40.Ne6 Rc8 (40...Rf1 41.Kf1 Ra1 42.Kg2+–) 41.Rf5 (41.Rf4!? h6 42.Re4 Ra4+–) 41...h6 42.Rc5 Re8 43.b6 (better is 43.Nd4!? Rea8 44.Kg2 Ra1+–) 43...Ra1 44.Kg2 Rb1 (better is 44...Re6 45.Rc8 Kg7+–) 45.Nc7 Rf8 46.Rb5 (46.Rb5 Rb5 47.Nb5+– (47.cb5?! Rb8+/–)) 1–0. Thesing,Michael (1885) – Langer,Ralf (1770), Muensterland Verbandsklasse–B, 2008.

9.d4 c5 10.Nbd2 cd4 11.Nd4 Nc5 12.N2b3 Qc7 13.Nc5 bc5 14.Nb3 d5 15.Rc1 Qb6 16.cd5 ed5 0–1. marcosramospg – kpadfield (2115), net–chess.com, 2010.

9.d4 Ne4 10.Nbd2 f5 11.Ne4 fe4 12.Nd2 Qe8 13.f4 Qg6 14.Bg4 Rad8 15.Qe2 Bc8 (15...a6=) 16.f5 (16.Bh5 Qf5 17.g4+–) 16...ef5+= 17.Bf5?? (better is 17.Bh3+=) 17...Rf5–+ 0–1. Fournier,Frederic – Bakus Michel, Open Paris FRA, 1998.

9.d4 Ne4 10.Nfd2 f5 11.f3 Nef6 12.Qb3 Qe8 13.Nc3 Kh8 14.Bd3 Qh5 15.Rae1 d5 16.Ba3 Ba3 17.Qa3 a6 18.Qb3 ab5 19.Nb5 Rac8 20.Nc3 Qg5 21.Rf2 f4 22.e4 c5 23.ed5 ed5 24.cd5 cd4 (24...Nd5?! 25.Nde4 Qh5 26.Nd6 cd4 27.Nd5 Bd5 28.Qb4=) 25.Nce4 Qd5 26.Bc4 Qe5 27.Rfe2 Be4 28.Ne4 Nc5 29.Qb5 d3 (29...Nfe4!? 30.Re4 Qf6–/+) 30.Bd3= Qd4 31.Nf2 Nd5 32.Re8 Ne3 33.Rf8 Rf8 34.Qb6 Qc3 35.Qb1 h5 36.Bf1 Rd8 37.Rc1 Qd4 38.Qb6 Rd5 39.Qg6 Qe5 40.Bd3 Kg8 41.Be4 Rd6 42.Qh7 Kf7 43.Nd3 Qg5 44.Nf4! Rh6?? (44...Qf4 45.Qh5 Double attack (45.Rc5 Zwischenzug)) 45.Bg6! Kf6 (45...Rg6 46.Qg6 Double attack) 46.Nh5 (better is 46.Qg8 Qg6 47.Ng6 Rg6 48.Qf8 Ke6 49.Qc5 Rg2 50.Kh1+–) 46...Rh5–+ (46...Rh5 47.Kf2 Rh7 (47...Qg6?! 48.Qg6 Kg6 49.Ke3=) 48.Bh7 Ng4 49.fg4 Qc1–+) 0–1. Kabanof,N (2130) – Wohl,A (2380), Dutch Open, Dieren NED, 2008.

9.d4 Re8 10.Nbd2 a6 11.Qc2=.

9.d4 Re8 10.Nbd2 Ne4 11.Ne4 Be4 12.Bd3 Nf6 13.Qc2 d5 14.Be4 Ne4 15.Ne5 Bd6 16.f3 Nf6 17.Nc6 Qd7 18.c5 Bf8 19.a4 a6 20.Rfc1 Rec8 21.Ba3 bc5 22.dc5 ab5 23.ab5 d4 24.Rd1 Qd5 25.ed4 Nd7 26.Bb2 g6 27.Bc3 Ra1 28.Ra1 Nc5? 29.dc5 Qc5 30.Kh1 Qb5 31.Na7 (31.Na7 Qb8 32.Nc8 Qc8 33.Qe4+–) 1–0. Anonymous – Anonymous, internet, 2011.

9.d4 Re8 10.Nbd2 Bf8 11.a4 (11.Qc2 a6+=) 11...a5 (11...c5 12.a5+=) 12.ba6 (12.Bd3 Be7+=) 12...Ra6= 13.c5 Ra7 14.cb6 cb6 15.Bb5 Ba6 (15...Be7 16.Qe2=) 16.Qb3 (16.Qe2 Bb5 17.ab5 Rc7=) 16...Qa8 (16...d5 17.Ne5 Bb5 18.ab5 Ra1 19.Ra1=) 17.Rfc1 Bb5 18.ab5 Rc8 (18...d5 19.Ne5=) 19.Nc4 (19.Ra7 Rc1 20.Bc1 Qa7=) 19...Ra1 (19...d5 20.Ra7 Qa7 21.Nce5 Rc1 22.Bc1 Ne5 23.Ne5=+) 20.Ra1 (20.Ba1? d5 21.Bb2 dc4 22.Rc4 Qd5–+) 20...Qd5 21.Nfd2 Ne4 (21...Qh5 22.Ba3 d5 23.Nd6=+) 22.Ne4 (22.Ra7 Qf5 23.Ne4 Qe4=) ½–½. Labahn,Wolfgang (2215) – Liemann,Michael (2280), Dortmund op–A, 1993.

9.d4 h6 10.Nc3 d5 11.cd5 Nd5 12.Rc1 Rc8 13.a4 N7f6 14.Qc2 Bb4 15.Nd5 Bd5 16.Bc3 Be7 17.Nd2 Qd7 18.Bf3 Bf3 19.Nf3 (worse is 19.gf3 c6 20.Qd3 Nd5–/+) 19...c5 20.dc5 Rc5 21.Rfd1 Qb7 22.Qb3 Rcc8 23.Nd4 Nd5 24.Bb2 Bf6 25.Nc6 Bb2 26.Qb2 Ne7 27.Rd6 Nc6 28.bc6 (28.Rdc6?! Rc6 29.bc6 Qc7=) 28...Qb8 29.Qd2 Rc7 30.Rd7 Rcc8 31.f4 Rc7 32.Qd6 Rd7?? (better is 32...Rfc8+–) 33.Qb8 (33.Qb8 Rb8 34.cd7+–; 33.Qd7?! Rc8+/–) 1–0. Van Esbroeck,Dirk – Vontina,Maria, SN–2010–0–00297, 2010.

9.d4 h6 10.Nbd2 Ne4 (10...a6 11.Qc2=) 11.Ne4+= Be4 12.Nd2 Bb7 13.Bf3 Bf3 14.Nf3 (14.Qf3 a6+=) 14...f5 (14...a6 15.e4+=) 15.Re1 (15.Qd3 a6+=) 15...Nf6 (15...a6 16.a4+=) 16.a4 (16.d5 e5+=) 16...Qe8 (16...a6 17.Qd3+=) 17.h3 (17.d5 Qf7+=) 17...Ne4 (17...a6 18.Qd3=) 18.Nd2 (18.d5 Qg6+=) 18...Qg6 (18...a6 19.f3 Ng3 20.e4=) 19.Ne4 fe4 20.Qg4 (20.Rf1 a6=) 20...Qg4 21.hg4 Rf7 (21...a6 22.Rec1=) 22.Ra2 (22.a5 Raf8 23.Rf1 d5=) 22...Raf8 (22...a6 23.Rc1=) 23.Bc3 d5 24.cd5 (24.Rc1 Bd6=) 24...ed5 25.Rc1 Bd6 26.Be1 (26.a5 ba5 27.Rcc2 Rb8+=) 26...g5 (26...Rf6 27.g5 hg5 28.a5+=) 27.Rb1 (27.Rc6 Kg7=) 27...Rh7 (27...Rc8 28.Rc2=) 28.Kf1 (28.Bb4 Bb4 29.Rb4 Kf7=) 28...h5+= 29.gh5 (29.Bb4 hg4 30.Bd6 cd6+=) 29...Rh5 30.Ke2 (30.Rba1 Rh1 31.Ke2 Rg1–/+) 30...Rh2–/+ 31.Rbb2 (31.Kf1!?–/+) 31...Rg2–+ 32.Kd1 (32.Rc2 Rf3–+) 32...g4 (32...Rf3 33.a5–+) 33.Re2 (33.f4 Rg1–+) 33...Rg1 (33...Rf3 34.a5–+) 34.Kc2 (better is 34.a5–+) 34...Rg2?? (34...c5 35.bc6 Rc8 36.Kb3 Rc6 37.Bb4–+) 35.Kd1 Rf7 (35...a5 36.ba6 Ra8 37.a5 Ra6 38.ab6 Rb6 39.Ra5–+) 36.Rac2 (36.f4 Rg1 37.Rg2 Rg2 38.Rg2=) 36...Rg1 (36...Rh2 37.f4 Rh1 38.Rg2–/+) 37.Ra2 (better is 37.Rc6–+) 37...Bb4 38.Rab2 Be1 (38...Ba5 39.Rb3 Rf1 40.Rbb2–+) 39.Re1–/+ Rg2 40.Ree2 Rh7 (40...Rh2 41.Rbc2–+) 41.Ra2 (better is 41.Rbc2!?–/+) 41...Rh1 42.Kc2 (42.Re1 Rhh2 43.Rc2–+) 42...Rgg1?? (better is 42...g3 43.Kc3 Rhh2–+) 43.Kb3–/+ Kf8 (43...Rh7 44.Rec2–/+) 44.Rec2 Rh7 (44...g3 45.fg3 Rg3 46.Rf2 Ke7 47.Rac2 Re3 48.Kb2–/+) 45.Rc6 g3 46.fg3 Rg3 47.Rf2 (47.Rc3 Ke8–/+) 47...Rf3 (47...Ke8 48.Rc3–/+) 48.Re2 Ke8 49.Rc3 Kd8 (49...Rhh3 50.Kc2–/+) 50.Kb4 (50.Rg2 Rhf7–/+) 50...Rh1 (50...Rf1 51.Rg2 Rb1 52.Ka3+=) 51.Rec2 Exerts pressure on the backward pawn (better is 51.Rg2!?+=) 51...Rb1 52.Ka3 Rf7 (52...Re1 53.Rc7 Ree3 54.Kb2 Rb3 55.Kc1 Rf1 56.Kd2 Rf2 57.Ke1 Rc2 58.Rc2–+) 53.Ka2 (53.Rg2 Rbf1+=) 53...Rbf1 (53...Rff1 54.Ka3–/+) 54.Rg2 R1f2 55.Rf2 Rf2 56.Kb3 Kd7 57.Ka3 Re2 58.Kb3 Re1 59.Kb2 (59.Kb4 Rb1 60.Ka3 Rf1–/+) 59...Rg1 60.Rc2 Rg8 61.Kb3 Rc8 (61...a6 62.Rh2 ab5 63.ab5–/+) 62.Rc6 (62.Rh2 Rf8+=) 62...Re8 (62...Rh8 63.Rg6+=) 63.Rc3 (63.Rh6 Rf8+=) 63...Re6–/+ 64.Kb4 c5 (better is 64...c6–/+) 65.dc5+= bc5 66.Kc5 Rd6 (66...Re5 67.Kd4 Re6 68.Kd5+–) 67.Kd4 ½–½. Thierling,Helmut – Kraemer,Marianne, NRW–ch op Seniors, 2003.

9.d4 h6 10.Bd3 a6=.

9.Nd4 a6=.

9.Nd4 d5 10.Nc6 Bc6 11.bc6 Nb8 12.Qa4 dc4 13.Qc4 Qd6 14.Rc1 a5 15.d3 Na6 16.Na3 Qd5 17.Nb5 Qc4 18.Rc4 Rfc8 19.Kf1 Ne8 20.a3+/– Nd6 21.Nd6 Bd6 22.Rg4 g6 23.d4 h5 24.Rg5 Kh7 25.Bd3 Kh6 26.f4 Be7 27.Rb5 Rd8 28.Rc1 Rac8 29.Ke2 Nb8 30.Be4 Bf6 31.Kd3 Kg7 32.Bf3 Kf8 33.e4 Ke8 34.e5 Bg7 35.Kc4 Bh6 36.g3+– Bf8 37.Rd1 Be7 38.h3 Bf8 39.g4 hg4 40.hg4 Be7 41.Rh1 Bf8 42.Rh8 Ke7? 43.a4 Bg7 44.Ba3 (44.Ba3 Rd6 45.Rc8+–) 1–0. pierre – kratz, ChessWorld.net, 2005.

9.Nd4 e5 10.Nc6 Bc6 11.bc6 Nb8=.

9.Nd4 Qe8 10.f4 Nc5 11.Nc3 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Qd7 15.Na2 d5 16.Nb4 Nfe4 17.Ndc6 Bc6 18.bc6 Qd8 19.d4 (better is 19.cd5!? ed5 20.d3+/–) 19...Nd7= 20.Nd5 ed5 21.cd7 Qd7 22.cd5 f5 (22...Qd5 23.Qc2 Re8 24.Bc4+= (worse is 24.Qc7 Qb3 25.Qc1 Ba3–/+)) 23.Qc2+/– Bd6 24.Bf3 Qe7 25.Bb2 Re8 26.Be4 Qe4 27.Qe4 Re4 28.Kf2 h6 29.Ra1 Re8 30.Ra7 Kf7 31.Ba3 Ke7?? (better is 31...Ba3 32.Ra3 Ke7+/–) 32.Rc7+– (32.Rc7 Kf6 33.Bd6+–) 1–0. Quist,Viggo Bove – Boyd,Frank, olm9 .qual GP3 B5 corr, 1977 (=1.Nf3 Nf6 2.c4 b6 3.b4 e6 4.b5 Bb7 5.Bb2 Be7 6.e3 0–0 7.Be2 d6 8.0–0 Nbd7)

9.a4 a6

10.a5 ab5 (10...Ne4) 11.ab6 bc4 12.bc7 Qc7.

10.Nc3 c6 11.ba6 Ba6 12.Nd4=.

10.d3 Re8 11.Nbd2 Bf8 (11...c5 12.ba6 Ra6 13.Rb1=) 12.Qc2 g6 (12...c5 13.ba6 Ra6 14.Rfb1=) 13.d4 Bg7 14.Rac1 a5 (14...c5 15.e4=) 15.Ba3 White prepares the advance c5 15...Bf8 (15...e5 16.c5 dc5 17.dc5 bc5 18.Bc5+=) 16.Rfd1+/– Qc8 17.Nb3 White prepares the advance c5 (17.e4 c6+/–) 17...Be4+= 18.Qc3 Rb8 19.c5 (19.Nbd2 Bf5+/–) 19...Nd5 20.Qd2 dc5 21.Ng5 c4 (21...N7f6 22.dc5 c6 23.f3+/– (worse is 23.Ne4 Ne4 24.Qd3 f5+/–)) 22.Bf8 (22.Rc4 Qd8 23.Bf8 Qg5–/+) 22...Nf8 (22...cb3 23.Bd6 Bc2–/+) 23.Rc4 Nf6 (23...Bf5 24.e4 h6 25.ef5 (25.ed5?! ed5 26.Nf7 Kf7+/–) 25...hg5 26.fg6 Ng6 27.Qg5+–) 24.Ne4+– Ne4 25.Qc2 Nf6 26.Rc7 Qd8 27.Bf3 (27.Rc1 Nd5 28.Rc4 Qh4+–) 27...Nd5 28.Bd5 Qd5 29.Nd2 (29.e4 Qd6+–) 29...Nd7? (better is 29...Rb7+–) 1–0. Sternik,Ryszard – Lozinski,Jozef, corr 1AMM Poland, 1991.

10.d4 Ne4 11.Nbd2N f5 12.Ne4 fe4 13.Nd2 Qe8 (13...Nf6 14.Qc2=) 14.f3 (14.Bh5 g6 15.Bg4 Bh4+=) 14...Bg5 (14...ef3 15.Bf3 Bf3 16.Rf3=) 15.f4 Bf6 16.Rf2 (16.Bh5 g6 17.Be2 Bg7+=) 16...e5 (16...c5 17.bc6 Bc6 18.Bh5=) 17.de5 (17.fe5 de5 18.ba6 Ra6+=) 17...de5= 18.f5 (18.ba6 Bc6 19.c5 ef4 20.Qb3 Kh8 21.Bf6 Rf6 22.cb6 Nb6 23.Rf4 Rf4 24.ef4 e3+=) 18...Bg5 19.Nf1 Nc5 20.Qc2 Qe7 21.Qc3 Rfe8 (21...Bh4 22.Ng3=) 22.Ba3 Rad8 (22...Bh4 23.g3 Bf6 24.a5=) 23.Bh5 (better is 23.a5!?+=) 23...Rd3= 24.Bc5 (24.Qb2 Red8=) 24...Qc5+= Now all is on e3 (worse is 24...Rc3 25.Be7 Re7 26.a5+/–) 25.Qd3? (better is 25.Qe1 Rf8 26.Kh1–/+) 25...ed3–+ 26.Be8 Be3 27.Ne3 Qe3 28.Kf1?! (28.ba6 Ba6 29.Bb5 Bb5 30.cb5–+) 28...Qd4 29.Rd1 Kf8 (29...ab5!? 30.ab5 e4 31.Rf4–+) 30.f6 (30.ba6 Ba6 31.Bb5 Bb5 32.cb5 e4–+) 30...gf6 (30...Ke8?! 31.fg7 Qg4 32.Rf8 Ke7 33.g8Q Qd1 34.Kf2 Qe2 35.Kg1 Qg2 36.Qg2 Bg2 37.Rf2–/+) 31.Bc6 (31.ba6 Ba6 (31...Ke8 32.ab7 Qd8 33.a5 ba5 34.Rb2+–) 32.Bb5 Bb5 33.ab5 e4–+) 31...Bc6 32.Rf6 (32.bc6 e4 33.Rfd2 Qc4–+) 32...Ke8 (32...Ke7 33.Rc6 Qf4 34.Kg1 Qe3 35.Kh1–+) 33.Rc6 (33.bc6 Qc4 34.Kg1 Qd4 35.Kh1 e4–+) 33...ab5 (33...Qf4 34.Kg1 Qe3 35.Kh1–+) 34.ab5 (34.cb5 e4 35.Rc7 e3 (worse is 35...Qa4 36.Rcc1–+) 36.Rc8 Kf7–+) 34...Qf4 (34...e4!? 35.Re1 d2 36.Re6 Kf7 37.R6e4 de1R 38.Re1 Qc4 39.Re2 Qb5 40.h3–+) 35.Kg1 Qe3 36.Kh1 Qe2 (36...Qe2 37.Rg1 d2–+) 0–1. Visser,Ynte (1760) – Pieters,Minko (2005), Groningen Netherlands, Festival–B, 2017.

10.d4 Re8 11.Nc3 Bf8 12.Qc2 g6 (12...c5 13.bc6 Bc6 14.e4+=) 13.Rfd1 Qc8 14.e4 c5 15.d5 ed5 16.ed5 Bh6 17.Bd3 Ne5 18.Ne5 de5 19.ba6 Ba6 20.Nb5 Bb5 21.ab5 Ra1 22.Ra1 Bg5 23.Ra6 e4 24.Be2 Nd7 25.Bc1 Bc1 26.Qc1 f5 27.Qf4 Ne5 28.Rb6?? (better is 28.Qh4 Qb8 29.Qf6+/–) 28...Qc7–+ 29.Rc6? (29.Rg6 hg6 30.Qd2–+) 29...Qa5 (better is 29...Nf3! 30.Qf3 ef3 31.gf3 Qf4–+) 30.Ra6 (better is 30.Re6 Re6 31.de6 Qa1 32.Bf1+–) 30...Qe1= 31.Bf1 Nd3?? (better is 31...Nc4 32.Ra2 Qd1=) 32.Qe3+– (32.Qe3 Qd1 33.Ra7+–) 1–0. Gugulski,Marcin – Kusmierek,Jozef, corr 2AMM Poland, 1994.

10.Nc3 Re8

11.d4 c6 12.ba6 Ra6 13.e4=.

11.d4 Bf8

12.Qc2 c5 13.ba6 Ra6 14.Nb5=.

12.Qc2 c5 13.bc6 Bc6 14.e4+=.

12.Qd3 c5+=.

12.Qc2 g6

13.Rfd1 c5 14.ba6 Ra6 15.Nb5+=.

13.Rfd1 Bg7 14.h3 Qc8 15.e4 e5 16.de5 Ne5 17.Ne5 de5 18.Nd5 h5 19.Ba3 Kh8 20.f3 (20.Nf6 Bf6 21.c5 bc5+/–) 20...Nd7 21.Qd2 Nc5 (21...Rd8 22.Be7 Re8 23.Bg5+/–) 22.Bc5 bc5 23.Qe3 ab5 24.cb5 (worse is 24.ab5 Ra1 25.Ra1 c6+/–) 24...Bd5 25.Rd5 (worse is 25.ed5 e4 26.fe4 Ba1 27.Ra1 Qd8+=) 25...Bf8 26.Bc4 Kg7 27.Qc3 White intends a5 27...f6 28.Rd2 Rd8 29.Bd5 Ra7 30.a5 1–0. Thystrup,Preben – Rolvag,Mikael, corr, 1987.

13.Rfd1 Qc8=

14.d5 ed5 15.ba6 Ba6 16.cd5 Be2 17.Ne2 Qb7 18.Qc4 (18.Nf4 Ne5+=) 18...Bg7 19.Nc3 Nc5 20.Nd4 Qa6 21.Qa6 (21.Qb5 Ng4=) ½–½. Schirmer,Michael – Wilk,Bronislawa, corr 3GMM–05, 1995.

14.d5 Bg7 15.ba6 Ba6 16.a5+=.

14.d5 Bg7 15.de6 fe6 16.a5=.

14.d5 Bg7 15.de6 Re6 16.Nd4 Re8 17.Bf3 Bf3 18.Nf3 ab5 19.ab5 Ra1 20.Ba1 Qa8 21.Bb2 Ne4 22.Nd5 Qb7 23.Bg7 ½–½. Rosner,Dirk – Hafner, corr, 1989.

14.e4 Rb8 15.h3 (15.a5 c5+/–) 15...a5 16.Qd3 White intends d5 16...e5 17.d5 Nc5 18.Qe3 h6 19.Ne1 Bg7 20.Nd3 Nfd7 (20...Nb3 21.Rab1+=) 21.Bg4 Qd8 22.Bd7 Nd7 23.f4 (23.Bc1 Qf6+=) 23...ef4= 24.Qf4 Qg5 25.Qg5 hg5 26.Re1 f6 (26...f5 27.Kf2=) 27.Nd1 (27.Re2 g4+=) 27...Kf7 28.N1f2 Re7 29.Re3 Rbe8 30.Rae1 f5 31.Bg7 Kg7 32.g3 Kf6 33.ef5 (33.Kg2 Ne5 34.Ne5 Re5+=) 33...gf5= 34.Re7 Re7 35.Re7 Ke7 36.h4 gh4 37.gh4 Ne5 38.Ne5 White terminates the opponent with strong threats 38...de5 39.Nd3 Kf6 40.h5 Bc8 (40...e4 41.Nf4=) 41.h6 Kg6 42.Ne5 Kh6 43.d6 cd6 44.Nf7 Kg6 45.Nd6 Be6 46.c5 bc5 47.b6 The passed pawn on b6 will quickly become a dangerous weapon 47...Bd5 48.b7 Bb7 49.Nb7 (49.Nb7 c4 50.Na5+–) 1–0. Laskowski,Janusz – Lozinski,Jozef, corr 1AMM Poland, 1992.

14.e4 c5 15.dc5 dc5 (15...Nc5!? 16.e5 de5 17.Ne5 Bg7=) 16.e5+/– Ng4 17.Ne4 Be4 (17...Rd8!?+/–) 18.Qe4 Nh6 19.Qc6 Qc6 20.bc6 Nb8 21.c7 Nc6 22.Rab1 a5 (better is 22...Rec8!? 23.Rd7 Bg7+–) 23.Rd6 Ne5 24.Rb6 (24.Be5 Bd6 25.Bd6 Ra6+–) 24...Nf3 25.Bf3 (25.gf3?! Nf5+=) 25...Rac8 26.Be5 Bg7 27.Bg7 (27.Bg3 Nf5 28.Rb8 e5 29.Rc8 Rc8+–) 27...Kg7+/– 28.Rb8 Rf8 (28...Rh8 29.R8b7+–) 29.R8b7+– Nf5 30.Bc6 Nd6 31.Ra7 Ne8 (31...Nc4? 32.Rc1 Ne5 33.Rc5 Nc6 34.Rc6+–) 32.Rbb7 Nd6 33.Rb5! Ne8 (33...Nb5 34.ab5 Passed pawn) 34.Be8 (34.Raa5?! Rc7 35.Be8 Re8+/–) 34...Rfe8 35.Rba5 (35.Raa5?! Rc7 36.Kf1 Rd8+/–) 1–0. Cornacchini,Gabriele – Jobe,Tom, IECC, 1999.

14.e4+/– e5 15.de5 (15.Nd5 ed4 16.Rd4 Bg7+=) 15...Ne5 16.Ne5 de5 17.Nd5 Nd5 (17...Qe6 18.Bd3 Rec8 19.Qc3+=) 18.cd5+/– (worse is 18.Rd5 Bd5 19.cd5 Qd7=) 18...Qd7 19.Rac1 Bd6 20.Qd2 (20.Bd3 Red8+/–) 20...a5 (20...f5 21.Qe3+=) 21.Qg5 Kg7 (21...f5 22.Bd3+/–) 22.f4 (22.Bg4 Qd8 23.Qe3 Qf6+/–) 22...f6+/– 23.fe5 fe5 (23...Bc5 24.Rc5! bc5 25.Qf6 Kg8 26.e6 Re6 27.de6 Qd4 28.Rd4 Rf8 29.Rd8 Rd8 30.Qd8) 24.Rf1+– Qe7 25.Qg3 Rf8 26.Bg4 Rf1 27.Rf1 Rf8 28.Rf8 Kf8 29.Be6 Qf6 30.Qf3 (30.Qe3 Bc5 31.Ba3 Ba3 32.Qa3 Kg7+–) 30...Qf3+= 31.gf3 Ke7 32.Bc1 Kf6 33.h4 Kg7 34.Kg2 h6 35.Kg3 Kh7 (35...Bc5 36.f4 Kf6 37.Kf3 ef4 38.Bf4+–) 36.h5 (36.f4 Kg7+/–) 36...Kg7 (36...gh5 37.f4+=) 37.Kg4 g5 38.Kf5 Ba8? (better is 38...Kf8+/–) 39.Bb2+– (39.Bb2 g4 40.fg4+–) 1–0. Guziec,Krzysztof – Lozinski,Jozef, corr 1AMM Poland, 1991.

14.e4 Bg7+/–.

9.a4 c5

10.Na3 a6 11.ba6 Ra6 12.Nb5 d5 13.cd5 Nd5=.

10.Qb3 d5 11.d3 a6 12.ba6 Ra6 13.Na3 dc4=.

10.Qc2 a6 11.Nc3 Ne5 12.Ne5 de5 13.ba6 Ra6=.

10.Nc3 a6 11.Qb3 e5 12.d3 Re8 13.Rfb1 a5=.

10.Nc3 Re8 11.Ra2 d5 (11...a6 12.ba6 (12.Qc2 d5 13.ba6 Ba6 14.d3 Bb7 15.Nb5=; 12.Qb3 ab5 13.ab5 Ra2 14.Qa2 d5 15.cd5=; 12.d4 cd4 13.Qd4 Nc5 14.Rd1 Qc7 15.Qf4=; 12.d3 d5 13.ba6 Ra6 14.Nb5 Qb8 15.Qc2=; 12.Re1 d5 13.ba6 Ba6 14.cd5 Be2 15.Re2=; 12.Qb1 d5 13.ba6 Ba6 14.d3 Bb7 15.Rc1=) 12...Ra6 13.Qb3 Ra5 14.Nb5 d5 15.d3=; 11...e5 12.Qb3 (12.Qc2 d5 13.cd5 Nd5 14.Raa1 Nc3 15.dc3=; 12.Re1 d5 13.d4 ed4 14.ed4 cd4 15.Qd4=; 12.d4 ed4 13.ed4 d5 14.Re1 cd4 15.Nd4=; 12.d3 d5 13.cd5 Nd5 14.Ra1 Bd6 15.Ne4=; 12.Qb1 a6 13.ba6 Ra6 14.Qf5 Ra5 15.Ra3=; 12.Qa1 d5 13.cd5 Nd5 14.Qb1 Nb4 15.Ra1=) 12...Qc7 13.d3 a6 14.e4 a5 15.Qc2+=; 11...Ne5 12.Ne5 (12.Re1 a6 13.Ne5 de5 14.d3 Qd7 15.ba6=; 12.d3 Ng6 13.a5 a6 14.Qa1 ba5 15.Ra5=; 12.Nb1 Nf3 13.Bf3 d5 14.Be5 Bd6 15.Bd6=; 12.Ra3 a6 13.Ne5 de5 14.ba6 Ra6 15.Nb5=) 12...de5 13.d3 Qc7 14.Qc2 Reb8 15.a5+=) 12.d4 (12.cd5 Nd5 13.d4 Rc8 14.Ra1 Bd6 15.Nd5=; 12.Qc2 dc4 13.e4 Bd6 14.Bc4 Ne5 15.Be2=) 12...dc4 (12...Rc8 13.dc5 Nc5 14.cd5 Nd5 15.Nd5+=) 13.Bc4 cd4 (13...Qc7 14.d5 ed5 15.Nd5=) 14.Nd4 Rc8 (better is 14...Qc7!? 15.Qe2 Rac8+=) 15.Be6+= Qc7 16.Bh3 (16.Bf5 Bd6 17.h3 g6+/–) 16...Bf8 (16...Bd6 17.g3+=) 17.Ra1 (17.Nf5 Ne5+/–) 17...Rcd8 (17...Bd6 18.g3+/–) 18.Rc1+/– Nc5 19.Qc2 Bc8 (19...Bd6 20.g3+/–) 20.Bc8 Rc8 21.Nc6 Bd6 (21...a6 22.h3+/–) 22.h3 a6 23.Rfd1 Bf8 24.Nd5 Nd5 25.Rd5 Re4?? (better is 25...f6+–) 26.Rc5! +–. Grund,Karl – Wikstroem,Bertil, corr ICCF EU/H/GT, 1955.

10.bc6 Bc6 11.Nc3 d5= 12.Nd4 Bb7 13.cd5 Nd5=.

10.d3 a6 11.Nc3 d5 12.ba6 Ra6 13.cd5 Nd5=.

10.d3 d5 11.Nc3 dc4 12.dc4 Qc7 13.Qc2 Bd6=.

10.d4 Qc7 11.a5 ba5 12.Bc3 a6 13.Ba5 Qb8=.

10.d4 cd4 11.ed4 d5+= 12.Nbd2 dc4 13.Bc4 Nd5 14.Qb3 N7f6 (14...Rc8 15.Ba3+=) 15.Rac1 (15.Rfc1 Rc8+=) 15...Nf4 (15...a6 16.Ne5+=) 16.Rfe1= Rc8 17.Ba3 Bd6 (17...N6d5 18.Ne4=) 18.Bd6 Qd6 19.Bf1 Rfd8 Attacking the isolated pawn on d4 20.g3 Qd5 (20...Bd5 21.Nc4 Bc4 22.Bc4=) 21.Rc8= Rc8 22.Qd1 Ng6 23.Qb1 (23.Bd3 Qd6=) 23...Ne7 (23...Qd6 24.Bg2+=) 24.Bg2 Qf5 (24...Qd6 25.Rc1+=) 25.Nh4 (25.Qf5!? Nf5 26.Nh4=) 25...Qb1+= 26.Rb1 Bg2 27.Kg2 Rc2 28.Nhf3 g5 (28...Nf5 29.Re1+=) 29.Rd1 (29.h3 h5 30.Rd1 g4 31.hg4 hg4–/+) 29...Ned5 (29...Ned5 30.h3 h5–/+; 29...g4 30.Ne5–/+) 0–1. Fischbach,Rainer – Bless,Gunnar, corr GER–ch qgB31, 1993.

10.d4 cd4 11.Nd4 Qc7 12.Nd2 Nc5 13.a5 a6=.

10.Ne1 a5 (10...d5 11.Na3 (11.d3+= dc4 12.dc4 Qc7 13.a5 a6+=) 11...Bd6 12.cd5 ed5 13.Nf3 Re8=) 11.Bf3 (11.Nf3 d5 12.Na3 Bd6 13.d4 Rc8=) 11...Bf3 (11...d5 12.d3 Bd6 13.cd5 ed5+=) 12.Nf3 Qc7 (12...d5 13.Qc2 Bd6=) 13.d3 Rad8 14.Nbd2 d5 15.Rc1 Bd6 16.g3=. Hasler,Ulrich (1905) – Idol,Harry (1855), IECG, 2000.

9.d4 a6

10.Na3=.

10.a4 ab5 11.ab5 Ra1 12.Ba1 Qa8 13.Nbd2 Ne4 (13...c6 14.bc6 Bc6 15.Bb2=) 14.Bb2+= Bf6 (14...f5 15.Qc2+=) 15.Qc2+/– Nd2 16.Nd2 Bg2 (better is 16...Be7!?+/–) 17.Ra1+– Qb7 18.e4 Bh3 (18...Be4 19.Qe4 d5 20.cd5 ed5 21.Qc2+–) 19.Ra3 1–0. DEFFM – GuestNLJG, freechess.org, 2018.

10.a4 Re8 11.Nc3 Bf8 (11...c6 12.ba6 Ra6 13.e4=) 12.Qc2 g6 (12...c5 13.ba6 Ra6 14.Rfb1=) 13.Rfe1 Bg7 14.Red1 Qe7 15.Nd2 (15.a5 ba5 16.Ra5 ab5 17.Rb5 Reb8+=) 15...a5 (15...c5 16.bc6 Bc6 17.a5=) 16.Bf3+= Bf3 17.Nf3 Nf8 (17...e5 18.Rac1+=) 18.e4+/– N6d7 19.Bc1 e5 (19...Qf6!?+/–) 20.Nd5 Qd8 21.Bg5 f6 22.Bh4 g5 (22...ed4 23.Nd4 (23.Rd4?! g5=) 23...Ne5 24.f4+–) 23.Bg3 Ne6 24.h3 (24.Rac1 g4 25.Nh4 Nd4+=) 24...ed4 25.Nd4 Nd4 26.Rd4 f5 27.Rdd1? (27.ef5 Bd4) 27...f4 (better is 27...Ba1!? 28.Ra1 fe4–+) 28.Bh2–/+ Be5 (better is 28...Ba1 29.Ra1 Nc5–/+) 29.Rd3?? (better is 29.Rab1+=) 29...Nc5 (29...Ba1 30.Rd2–+) 30.Rf3?? (better is 30.Rad1 Nd3 31.Qd3–/+) 30...Qd7 (30...Ba1 31.Qd1 Bg7 32.h4 gh4 33.Bf4 Re4 34.Re3–+) 31.h4?? (better is 31.Rd1+=) 31...g4 (31...Ba1 32.hg5 Ne4 33.Bf4–+) 32.Rf4?? (32.Rfa3 g3 33.fg3 Bd4 34.Kh1 Ba1 35.Ra1–/+) 32...Bf4 (32...Ba1 33.Qd1 Qg7 34.Rg4 Re4 35.Rg7 Bg7 36.Nc7 Rd8+–) 33.Nf6+– Kg7 34.Nd7 Bh2 35.Kh2 Nd7 36.Qe2 (36.f4 gf3 37.gf3 Ne5 38.Rg1 Kh8+–) 36...Ne5 37.f4 gf3 38.gf3 Rf8 39.Rf1 Rf4 40.Kg3 (better is 40.Kh3+–) 40...Raf8+/– 41.Qd2 (41.h5 Rf3 42.Rf3 Rf3 43.Kh4 Rf4 44.Kg5 Rg4 45.Kf5 Kh6+=) 41...Rf3 42.Rf3 Rf3 43.Kg2 Rf6 44.h5 Kf7 45.Qd5 Ke7 46.Kg3 Nd7 (46...Rf1 47.h6+/–) 47.Qb7 Kd8 48.Qa8 Ke7 49.Qg8 (49.Qc8 Rh6 50.Kh4 Re6+–) 49...Rf7 50.Qc8 (50.Qc8 Rf1 51.Qc7+–) 1–0. Mroz,Antoni – Lozinski,Jozef, corr 1AMM Poland, 1991.

9.d4 d5

10.Nbd2 a6 11.a4 a5 (11...c5 12.bc6 (12.cd5 Nd5 13.Rc1 ab5 14.Bb5 Nc7 15.Bd3 Bc6 16.Ra1 Nd5=; 12.Qb1 ab5 13.ab5 Ra1 14.Ba1 Bd6 15.cd5 ed5 16.dc5 bc5=; 12.Qc2 cd4 13.Nd4 Rc8 14.Rfc1 a5 15.Qd1 Nc5 16.cd5 Bd5=) 12...Bc6 13.Rc1 Re8 14.cd5 Bd5 15.Bd3 Bb7 16.Qe2 Nd5=; 11...c6 12.cd5 (12.Qb3 c5 13.ba6 Ba6 14.Rfb1 Qc7 15.Ba3 Rfc8 16.Bd3 Bd6=; 12.Qc2 dc4 13.Bc4 cb5 14.ab5 Qc7 15.Qd3 ab5 16.Bb5 Rfc8=; 12.bc6 Bc6 13.Rc1 dc4 14.Bc4 Qc7 15.Bd3 Rfc8 16.Ne5 Ne5=) 12...Nd5 13.bc6 Bc6 14.Rc1 Bb7 15.Qb3 N7f6 16.Ba3 Ba3=; 11...dc4 12.Bc4 (12.Qc2 c6 13.Bc4 cb5 14.ab5 Qc7 15.Qd3 ab5 16.Bb5 Rfc8=; 12.Nc4 ab5 13.ab5 Ra1 14.Qa1 c6 15.bc6 Bc6 16.Rc1 Bd5=; 12.Qb1 ab5 13.ab5 c6 14.Bc4 cb5 15.Bb5 Ra1 16.Ba1 Bf3=) 12...ab5 13.ab5 Ra1 14.Qa1 Bd6 15.Qa7 Qa8 16.Ra1 Ne4+=) 12.Rc1 (12.Ba3 c5 13.bc6 Bc6 14.Be7 Qe7 15.Qb3 Rac8 16.Rfc1 Rc7+=; 12.Qc2 dc4 13.Nc4 Be4 14.Bd3 Bd3 15.Qd3 Rc8 16.Nce5 Ne5+=; 12.Qb3 Rc8 13.Ba3 dc4 14.Nc4 Ba3 15.Qa3 Ne4 16.Rac1 Bd5+=) 12...Rc8 13.cd5 Bd5 (13...Nd5 14.Qb3 Bd6 15.Nc4 Qe7 16.Rfd1 Rfd8+=) 14.Bc4 (14.Ne5 Ne5 15.de5 Ne4 16.Ne4 Be4+=) 14...Bb7 (14...c6 15.Qe2 Bc4 16.Rc4 cb5+=) 15.Ne5 (15.Qb3 c5 16.bc6 Rc6+=) 15...Ne5 16.de5 Nd5 (16...Nd7=) 17.Qe2 Nb4 18.Rfd1 c6 19.Nb3 (19.Ne4 Qc7+/–) 19...Qe8+= 20.bc6 (20.Qg4 cb5 21.Bb5 Bc6+=) 20...Nc6 (better is 20...Qc6!? 21.Bd5 Ba6 22.Bc6 Be2+=) 21.Bb5+= f6 22.ef6 Bf6 23.Bf6 Rf6 24.Ba6 Ba6 25.Qa6 Rb8 26.Nd4 Nb4 27.Qb5 Qf8 28.f3 Nd5 (28...e5 29.Qc4 Kh8 30.Nb5+=) 29.Nc6 Rc8? (better is 29...Ra8 30.e4 Nf4+/–) 30.e4+– Nf4 (30...Nc7 31.Qb6 Kh8+–) 31.Ne7!! Qe7 32.Rc8 Rf8 33.Rf8 Qf8 34.Qb6 Ne2 (34...Qf6+–) 35.Kf1 (35.Kf1 Kf7 36.Ke2+–) 1–0. sokol60 (1720) – shub2004 (1710), ChessWorld.net, 2016.

10.Nbd2 a6 11.ba6 A) 11...Bc8 12.Bd3 (12.Ne5 Ba6 13.Nc6 Qe8 14.Ne7 Qe7 15.Qb3 Rfd8 16.Rfe1 c5=; 12.Qc2 Ba6 13.Rfb1 dc4 14.Nc4 Bb7 15.Bd3 Bf3 16.gf3 Rc8=; 12.Qb3 Ba6 13.Rfb1 dc4 14.Nc4 Bb7 15.Ba3 Ba3 16.Na3 Bd5=) 12...Ba6 13.Qc2 Re8 14.Rfc1 Bd6 15.Ne5 Qe7 16.a4 Rec8+=; B) 11...Ba6 12.Bd3 (12.Qc2 dc4 13.Nc4 Bb7 14.Ncd2 Rc8 15.Rfd1 Bd6 16.e4 c5=; 12.Qb3 c5 13.Rfb1 Qc7 14.Bd3 Rfc8 15.Rc1 cd4 16.ed4 dc4+=; 12.Qc1 c5 13.Rd1 Qc7 14.dc5 Bc5 15.Qc2 e5 16.Qf5 Rfe8=) 12...dc4 13.Nc4 Bb7 14.a4 Bd5 15.Qc2 Bf3 16.gf3 Bb4=.

10.Nbd2 a6 11.Qc2 A) 11...c6 12.a4 (12.bc6 Bc6 13.cd5 Bd5 14.Rfc1 Qc8 15.Qd3 Qb7 16.Ba3 Ba3=; 12.ba6 Ba6 13.Bd3 b5 14.c5 b4 15.a3 Bd3 16.Qd3 ba3=; 12.Rfc1 ab5 13.cb5 cb5 14.Bb5 Ba6 15.a4 Bb5 16.ab5 Ra1=) 12...dc4 13.Bc4 cb5 14.ab5 Qc7 15.Qd3 ab5 16.Bb5 Rfc8=; B) 11...dc4 12.a4 (12.ba6 Ba6 13.Nc4 Bb7 14.Ncd2 Rc8 15.Rfd1 Bd6 16.e4 c5=; 12.Bc4 ab5 13.Bb5 c6 14.Bd3 c5 15.e4 Rc8 16.e5 cd4=) 12...ab5 13.ab5 c6 14.Ra8 Ba8 15.Bc4 Qc8 16.Rc1 cb5=; C) 11...ab5 12.cb5 Rc8 13.Rfc1 c5 14.bc6 Bc6 15.Qb3 Ne4 16.Rc2 Rc7=.

10.Nbd2 a6 11.cd5 A) 11...ed5 12.a4 ab5 13.ab5 Ra1 14.Qa1 Ne4 15.Qa7 Qa8 16.Ra1 Bb4+=; B) 11...Nd5 12.a4 (12.ba6 Ba6 13.Ba6 Ra6 14.Qb3 Bd6 15.Rfe1 f5 16.Rec1 N7f6=; 12.Re1 ab5 13.Bb5 c6 14.Bc4 Ba6 15.e4 Nf4 16.Qc2 Qc7=) 12...N7f6 13.Ne5 ab5 14.ab5 Qd6 15.Ndc4 Qb4 16.Qc2 Ra1+=; C) 11...Bd5 12.ba6 Nb8 13.Qb1 Na6 14.e4 Bb7 15.Rc1 Nh5 16.Qc2 Nf4=.

10.Nbd2 dc4 11.Bc4 c5 12.bc6 Bc6 13.Qb3 Rc8 14.Rfc1 Re8? 15.Be6!+– fe6 16.Qe6 Kh8 17.Rc6 Rc6 18.Qc6 Nb8 19.Qc4 Nbd7? 20.Ng5 (20.Ng5 Rf8 21.Nf7 Rf7 22.Qf7+–) 1–0. pereira – The one, internet, 2006.

7.Be2 Ne4

8.0–0 f5 9.d4 c5 10.Nbd2 d5 11.Qb3 cd4 12.Bd4 Bf6 13.Ne4 fe4 14.Ne5 Nd7 15.Nd7 Qd7 16.c5 Qe7 17.c6+/– Bc8 18.Qb2 e5 19.Bc3 Rd8 20.Rad1 d4? 21.ed4+– ed4 22.Bb4?? Qe8 23.Bc4= Kh8 24.Qd2 d3 25.Qe3 Bd4 26.Qg3 Be5 27.f4 ef3?? 28.Qf3+– Bd4 29.Kh1 Bf6 30.c7 Rd4 31.Bd3 Qd7?? 32.Qa8 Qc7 33.Rc1 Qf7 34.Rc8 Rd8 35.Rd8 Bd8 36.Rf7 (36.Rf7 a6 37.Qd8) 1–0. carocan (1670) – unejam, kurnik, 2011.

8.Nc3+= Bf6 9.d4 c5 10.Ne4 Be4 11.0–0 cd4 12.Bd4 d5 13.cd5 Bd5 14.h3 Nd7= 15.Rc1 Rc8 16.Bf6 Qf6?? 17.Rc8+– Rc8 18.e4! Be4 19.Qd7 Rd8 20.Qa7 Qb2 21.Ng5 Bg6 22.Qb6 Rf8 23.Bc4 h6 24.Nf3 Be4 25.Qc7 Bf3 26.gf3 Qc3 27.b6 Qf3 28.b7 Qe4 29.b8Q Rb8 30.Qb8 Kh7 31.Qb1 (31.Qb1 Qg6 32.Qg6 Kg6 33.a4+–) 1–0. pierre – wymadas, internet, 2009.

7.g3 d5

8.d4 dc4 9.Bc4 Nbd7 10.Nbd2 c6 11.a4 c5 12.0–0 cd4 13.Bd4 Nc5 14.Re1 Rc8 15.Rc1 Nce4 16.Ne4= Be4 17.Ne5 Bb4 18.Re2 Nd5 19.Nc6 Rc6 20.bc6 Bf3 21.Rcc2 Be2 22.Qe2 Bd6 23.Bd5+/– ed5 24.Qg4 g6 25.Qh3 Qc7 26.Qd7 Qd7? 27.cd7+– Rd8 28.Rc8 Be7 29.Be5 f6 30.Bc7 (30.Bc7 Rf8 31.Bd6+–) 1–0. opportunity (2320) – vhilts (2310), net–chess.com, 2010.

8.Bf6 Bf6 9.d4 dc4 10.Bc4 c6 11.0–0 cb5 12.Bb5 Qd5 13.Be2 Rc8 14.Nbd2 Nc6 15.a3 Na5 16.e4 (16.Bd3 Qh5=) 16...Qd7 17.e5 Be7 18.Nb1 (18.Qb1!?–/+) 18...Qd5 19.Nbd2 Rc3 20.Qa4? (20.Qb1!?–/+) 20...Bc6 (20...Bg5! 21.Qb5 Qb5 22.Bb5 Bf3 23.Nf3 Rf3 24.h4–+) 21.Qd1 Bg5 (21...Ra3?! 22.Ra3 Ba3 23.Qb1–/+; 21...Ba3?! 22.Qb1–/+) 22.h4 (22.Nb1 Rf3 23.Bf3 Qf3 24.Qf3 Bf3 25.h4–+) 22...Bd2 0–1. Baer,Cy (1895) – Flores C,Ricardo (2040), CiF, 2007.

6.c4 a6

7.Qc2 Bf3 8.gf3 0–0 9.d4 ab5 10.cb5 Nd5 (10...c6 11.e4+=) 11.Nd2 c6 12.a3 cb5 13.Bb5 Bh4 14.Qb3 Qg5 15.Kf1 (15.Ke2 Qg2 16.Ne4 Nc6=) 15...Nc6 16.Rg1 Qh6 17.Rg2 (17.Nc4 Bd8=) 17...Rfc8 18.f4 Na5 19.Qd3 Rc7 20.Kg1 Rac8 21.Ba6 Ra8 22.Rc1 Rc1 23.Bc1 Nc7 24.Bb5 d5 25.Bd7 Qf6 26.Ba4 Rc8 27.Qb1 (27.Bc2 g6=) 27...b5+= 28.Bc2 Qh6 29.a4 Be7 30.f5 ba4 31.Ba4 Bd6 32.Qc2 Ra8 33.e4 Bf4 34.e5 Ne8 35.f6 g6 36.Kh1 Qh3 37.Bb5 Nc4 (37...Bd2 38.Bd2 Nc4 39.Bc1=) 38.Nc4 Bh2 39.Ne3 (39.Rh2 Qf1) 1–0. Luzuriaga,Norberto Horacio – Rushton,Darren, corr TSC, 2002.

7.d4 (--> 6.d4 a6 7.c4).

7.Be2=+.

7.a4 0–0

8.Nc3 ab5 9.ab5 Ra1 10.Qa1 Bf3 11.gf3=.

8.Nc3 c5 9.Be2 d5 10.cd5 ed5 11.d4 c4 12.0–0 Bb4 13.Qc2 Re8 14.Ne5 Bc3 (14...Nbd7 15.Bf3 ab5 16.ab5=) 15.Bc3 Ne4 16.Bb4 (16.Bh5 g6 17.ba6 Ra6=) 16...f6 17.Nf3 Qd7 18.ba6 Na6 19.Be1 (19.Rfb1 Bc8=) 19...Bc6+= 20.Bd1 b5 (20...Rec8 21.Bc3+=) 21.Nd2 (21.ab5!? Bb5 22.Be2=) 21...b4 22.Bh5 Re7 23.Ne4 Re4 (worse is 23...de4 24.Qc4 Bd5 25.Qc1+=) 24.Bf3 Re7 25.Bd2 Qe6 26.Rfb1 Rb8 Black plans b3 27.h4 b3 28.Qc1 Be8 29.h5 g5 30.hg6 Bg6 31.Rb2 Rg7 32.Be2 Kh8 33.g3 Be4 34.Qf1. Sternik,Ryszard (1935) – Woelfelschneider,Peter (2305), Tiger Temat, 2006.

8.Nc3 c5 9.Be2 d5 10.cd5 ed5 11.d4 Ne4 (11...c4 12.0–0=) 12.dc5 Nc3 (12...ab5 13.ab5 bc5 14.Ra8 Ba8 15.0–0+=) 13.Bc3+= bc5 14.0–0 ab5 15.Bb5 (15.ab5 Ra1 16.Qa1 f6+=) 15...Na6 (15...Bf6 16.Qd3+=) 16.Bd3+= Nb4 17.Bb4 cb4 18.Nd4 h6 (18...Bd6 19.Nb5+=) 19.Nf5 (19.Qh5 Bd6+=) 19...Bc5 (19...Bc8 20.Ne7 Qe7 21.Qf3+=) 20.Rc1 Bd6 21.Qb3 Re8 22.Rfd1 Qf6 (22...Qd7 23.Nd6 Qd6 24.Rb1+/–) 23.Nd6 White launches an attack 23...Qd6 24.Be2 (24.Rb1 Bc6 25.Bb5 Re4+/–) 24...Rac8 25.Rb1 Exerts pressure on the isolated pawn 25...Re4 26.Bd3 Rh4 (26...Rg4 27.f3 Rh4 28.g3+/–) 27.g3 Rc3 28.Qb2 (28.gh4?! Rb3 29.Rb3 d4=) 28...Rg4 (28...Qc6 29.f3+/– (worse is 29.gh4 Rd3 30.f3 Qg6 31.Qg2 Rd1 32.Rd1 Qe6+=)) 29.f3+– Rg5 (29...Rgc4 30.Bc4 Rc4+–) 30.Qb4 Qb4 31.Rb4 Bc8 (31...Rc7 32.a5 Kf8 33.a6+–) 32.f4 Rh5 (32...Bf5 33.fg5 Bd3 34.gh6 gh6 35.Rd2+–) 33.Rb8 d4 34.Ba6 de3 35.Rd8 Kh7 36.Rbc8 (36.Rbc8 Rc8 37.Rc8+– (worse is 37.Bc8 Ra5+–); 36.Bc8 Rc1 37.Kg2 e2 38.Rh8 Kg6 39.f5 Rf5 40.Bf5 Kf5+=; 36.Rdc8 Ra3 37.Bc4 Kg6+–) 1–0. Grott,Peter (1985) – Nittschalk,Karl (1705), DESC, 2001.

8.Nc3 c6 9.d4+=.

8.Nc3 d5 9.cd5 ed5 10.d4 (10.Be2 c6=) 10...Re8 (10...c6 11.Bd3=) 11.Be2 ab5 (11...c6 12.0–0=) 12.ab5 Ra1 13.Qa1 c5 14.bc6 Nc6 15.0–0 Qd7 (15...Qa8 16.Qb1=) 16.Qb1 (16.Qa4 Qe6=) 16...Ra8 17.Rc1 Ra5 18.Ne5 (18.Bd3 Nb4=) 18...Ne5 (18...Qe6 19.Bd3=) 19.de5+= Ne4 20.Ne4 de4 21.Bc3 Rc5 22.Qb6 Bd5 23.Bd2 Rc1 24.Bc1 h6 25.Bb2 Be6 (25...Qc8 26.Qb5 Be6 27.Qa4+=) 26.Bd4+/– Qd5 (26...Qc8 27.Qb1 Bd5 28.h3+/–) 27.Qb8 Kh7 28.Qb1 Kg8 29.h3 Qa2 30.Qa2 Ba2 31.Bg4 Bb4 32.Kh2 (32.f3 Kf8+/–) 32...Kf8 33.Kg3 Bd5 34.h4 g6 35.h5 (35.Be2 h5+/–) 35...g5 (35...Ke7 36.hg6 fg6 37.Be2+/–) 36.Bf5 Ke7 37.Kg4 (37.f3 ef3 38.gf3 Be6+/–) 37...Bb7 (37...Be6 38.Be6 Ke6 39.f3+/–) 38.Kh3 (38.f3 ef3 39.gf3 Ba6+/–) 38...Bd5 39.Kg3 Bb7 (39...Ke8 40.f3+/–) 40.Kg4 (40.f4 ef3 41.gf3 Bd5+/–) 40...Bd5 41.f4 ef3 42.gf3 Bc4 43.Kg3 Be1 (43...Be6 44.Be4+/–) 44.Kg2 Bb4 45.Kf2 (45.Be4 Kd7+/–) 45...Bb3 (45...Be6 46.Be4+/–) 46.Kg3 (46.Be4 Ke6+/–) 46...Be1 (46...Be6 47.Be4+/–) 47.Kh3 Bb4 48.Bg4 Bd2 ½–½. Grott,Peter – Nittschalk,Karl, DESC, 2001.

8.Nc3 d6 9.Be2 c5 10.0–0 (10.d3 a5=) 10...Nbd7 (10...ab5 11.Nb5 Nc6 12.d3=) 11.d4 (11.ba6 Ra6 12.d3 Qb8=) 11...Ne4 (11...ab5 12.Nb5 Qb8 13.g3=) 12.Ne4 (12.ba6 Ra6 13.Bd3 Ndf6=) 12...Be4 13.Nd2 (13.Qb3 Qc7=) 13...Bb7 14.Bf3 (14.Qb3 Qc7=) 14...Qc7 15.dc5 (15.Qe2 cd4 16.ed4 ab5 17.ab5 Rfe8=) 15...Nc5 16.Bb7 Qb7 17.Qg4 (17.Nb3 Rfc8=) 17...e5+= 18.f4 (18.Qe2 f5+=) 18...f5 (18...Nd3 19.Bc3 f5 20.ba6 Ra6 21.Qd1+=) 19.Qg3 (19.Qe2 e4+=) 19...Nd3–/+ 20.Bc3 (20.Rab1 Nb2 21.Rb2 Bf6–/+) 20...Bf6 21.ba6 (21.fe5 Be5 22.Be5 de5–/+ (22...Ne5?! 23.Qf4=)) 21...Ra6 (21...Qa6 22.fe5 Be5 23.Be5 de5 24.Rab1–/+) 22.fe5+= Be5 23.Be5 de5 24.e4 Nf4 25.Qf3 (25.Qe3 g6+=) 25...Qd7 (25...fe4!? 26.Ne4 Qa7–/+) 26.Qe3+= fe4 (26...Qc6+=) 27.Ne4 (27.g3 Ne6+=) 27...Qc6 (better is 27...Ra4!? 28.g3 Ra1 29.Ra1 Ne2 30.Kg2 Nd4–+) 28.g3= Ne6 (28...Nh3 29.Kg2 Rf1 30.Rf1=) 29.Rf8 Nf8 30.Qd3 (30.c5 Ne6 31.cb6 Rb6+=) 30...Ra7 31.Qd5 (31.Nc3 Nd7=) 31...Qd5 32.cd5 Ra5 (32...Nd7 33.Nd6=) 33.d6 (33.Nd6 Nd7 34.Rc1 Kf8=) 33...h6 ½–½. Steffens,Olaf (2255) – Kalabic,Faris (2210), 2. Bundesliga Nord, 2017.

8.Nc3 d6 9.Be2= Nbd7 10.0–0 Ne4 (10...c6 11.bc6 Bc6 12.Nd4=) 11.Ne4 Be4 12.d3 Bb7 13.Nd4 Bf6 14.Bf3 Bf3 15.Qf3 (15.Nf3? Bb2 16.Rb1 Qf6–+; 15.gf3 Bd4 16.Bd4 e5+=) 15...Qc8 (15...Ne5 16.Qe4=) 16.Nc6+= Re8 17.Bf6 Nf6 18.e4 (18.d4 e5+=) 18...e5 19.h3 Nd7 (19...Qe6 20.a5+=) 20.Qg3 Nc5 21.f4 ab5 22.fe5 (22.cb5 Qe6 23.fe5 de5 24.Rf5=) 22...bc4= 23.ed6 cd6 24.Qd6 Qe6 25.Qe6 Re6 26.Nd4 Rd6 (26...cd3?! 27.Ne6 Ne6 28.Rfd1=) 27.Nb5 Rd3 (27...Rd3 28.e5 Ra4 (28...Na4?! 29.Rfc1–/+) 29.Ra4 Na4+=). Kreuzer,U – Bohnes, Active chess, 1991

8.d4 d6 9.Be2 Nbd7 10.0–0 Re8 (10...c5 11.ba6 Ra6 12.d5=) 11.Nc3 Bf8 (11...c6 12.Bd3=) 12.Qc2 g6 (12...c5 13.bc6 Bc6 14.e4=) 13.Rad1 (13.e4 Bg7+=) 13...Bg7 14.Nd2 (14.e4 Qe7+=) 14...e5 (14...c5 15.bc6 Bc6 16.e4+=) 15.Bf3+= Qc8 16.Bc6 (16.d5 Nc5+=) 16...Ng4 (16...Bc6 17.bc6 Nf8 18.d5+=) 17.Qe4 (17.d5 Bc6 18.dc6 Nc5+=) 17...Bc6= 18.bc6 ed4 19.Qg4 (19.cd7? Qd7 20.Qd3 dc3 21.Bc3 Qa4 22.Bg7 Kg7–+) 19...f5 20.cd7 Qd7 (20...fg4?? A) 21.dc8B?! dc3 22.Bc3 Rac8+–; B) 21.dc8N?! dc3 22.Ba1 cd2+=; C) 21.dc8R dc3 22.Ra8 Ra8+–; D) 21.de8B? dc3 22.Bc3 Qe8 (worse is 22...Bc3 23.Bc6–+) 23.Bg7 Kg7–+; E) 21.de8Q?! Qe8 22.ed4 Bd4=; F) 21.dc8Q Rac8 22.ed4 Bd4 23.Rfe1+–) 21.Qf3 (21.Qd4 Bd4 22.ed4 Re7+=) 21...dc3–/+ 22.Qd5 (22.Ba1 cd2 23.Qd5 Qe6 24.Rd2 Rac8–/+) 22...Qf7 (22...Kh8 23.Ba1 cd2 24.a5 ba5 25.Rd2–/+) 23.Qf7 (23.Ba1!? cd2 24.Rd2–/+) 23...Kf7 24.Bc1 (24.Ba1 cd2 25.Bg7 Kg7 26.Rd2 Re4–+) 24...cd2–+ 25.Bd2 a5 (25...a5 26.Rc1 Re4–+; 25...Re4 26.Rc1–+) 0–1. Mayer,Th – Frick,Christof, corr Tuebingen, 1984.

8.d4 Ne4 9.Nbd2+=.

8.Be2 ab5 9.ab5 Ra1 10.Ba1 d5 (10...c6 11.0–0=) 11.d4 (11.0–0 dc4 12.Bc4 c5=) 11...dc4 12.Bc4 Qd6 (12...Bd5 13.Bd5 ed5 14.0–0=) 13.0–0 c5 (13...Rc8 14.Qe2=) 14.bc6 (14.Nbd2 Nbd7=) 14...Nc6 15.Nbd2 (15.Bc3 Na5 16.Bd3 Rc8=) 15...Re8 (15...Rc8 16.Qb1 Nb4 17.Rc1=) 16.Qe2 (16.e4 Qf4 17.Qb1 Bb4=) 16...Na5 (16...Nb4 17.Rc1=) 17.Bd3 Nd5 (17...Rc8 18.Rb1=) 18.Ne5 (18.Ne4 Qd8=) 18...f5 (18...Rc8 19.Rb1=) 19.Qh5 (19.Rc1 Bf6+=) 19...g6 (19...Rf8 20.Rb1+=) 20.Ng6 (20.Qh3 Ra8+=) 20...hg6= 21.Qg6 Kf8 22.Rb1 (22.Qh6 Kf7 23.Qh5 Kf8 24.Qh8 Kf7 25.Qh5 Kf8 26.Qh8 Kf7 27.Qh5=) 22...Qa3 (better is 22...Rc8!?+=) 23.Qh6+= Kf7 24.Qh5 (24.Be2 Rc8 25.Bh5 Kg8 26.Qe6 Kh8 27.Qh6 Kg8 28.Bg6+–) 24...Kg7 (better is 24...Kf8=) 25.Bf1?? (25.Bf5!? ef5 26.Qe8+/–) 25...Qa2?? (25...Rh8 26.Qe2–/+) 26.Rd1?? (26.Qe8 Qd2 27.Rb6+–) 26...Rh8–+ 27.Qe2 (27.Qf3 Bd6 28.h3 Nb3 29.Nb3 Qb3–/+) 27...Bd6 (27...Kf7 28.Nf3 Qe2 29.Be2–+) 28.h3 Rh4 (28...Kf8 29.e4 fe4 30.Ne4 Qe2 31.Be2–+) 29.Qd3 (29.g3 Rh6–+) 29...Qa4 (29...Rh6 30.Rb1–+) 30.Rb1 Nb4 31.Qc3 Kf8 (31...Bd5!?–/+) 32.d5+= Bd5?? (32...e5 33.e4 Re4 34.Ne4 fe4=) 33.Qf6+– (33.Qf6 Ke8 34.Qh4+–) 1–0. Poschmann,Ernst – Coltharp,Cameron, email 4AMM–06, 1997.

8.Be2 c5 9.d3 d6 10.Nbd2 Nbd7 11.0–0 a5 12.d4 Qc7 13.Qc2 Rac8 14.Rac1 Qb8 15.Qb1 Qa8 16.Rfd1 h6 17.Ne1 (17.h3 Ne4=) 17...Rc7 18.f3 cd4 19.ed4 d5 20.cd5 Rc1 21.Rc1 Nd5 22.Rc2 Rd8 23.Nd3 Qb8 (23...Ne3 24.Rc1–/+) 24.Nc4= Bg5 25.Nce5 (25.Bc1 Bf6 26.Bb2 Nf4=) 25...Ne5+= 26.Ne5 (26.de5!? Nb4 27.Rc4–/+) 26...Be3–/+ 27.Kh1 Qd6 (27...Nb4 28.Nc6 Bc6 29.bc6 Nc2 30.Qc2–/+) 28.Nc4 (28.Bd3 Bf4=) 28...Qf4 (28...Qb4 29.Qa1–/+) 29.Ne3 Qe3 (29...Ne3 30.Bc1 e5 31.de5+=) 30.Bf1? (better is 30.Qc1=) 30...Qb3–+ 31.Rc4 Ne3 32.Rc3 Qd1 33.Qd1 (33.Rc1!? Qa4 34.Bd3–+) 33...Nd1 34.Rc7 Nb2 35.Rb7 Na4 36.Bd3 g6 37.Bc2?? Rc8 0–1. Mikhaylov,Dimitri (1850) – Drachev,Oleg (2220), St Petersburg RUS, Chigorin Mem, 2012.

8.Be2 Ne4 9.0–0 (9.Nc3 Bf6 10.d4 Nc3 11.Bc3 d6+=) 9...Bf6 (9...ab5 10.ab5 Ra1 11.Ba1+=) 10.d4 d5 (10...ab5 11.cb5 d5 12.Ne5=) 11.Nbd2+= dc4 (11...ab5 12.ab5 Ra1 13.Qa1 dc4 14.Nc4+=) 12.Nc4 (12.Ne4 Be4 13.Nd2 Bd5+/–) 12...c6 (12...ab5 13.ab5 Ra1 14.Qa1+=) 13.Ba3 (13.ba6 Na6 14.a5 b5+/–) 13...Re8 (13...ab5 14.ab5 cb5 15.Nce5+=) 14.Bd3 (14.ba6 Na6 15.Bd3 c5+/–) 14...cb5 (14...ab5 15.Nce5 Nd6 16.Bd6 Qd6 17.ab5 Ra1 18.Qa1 cb5 19.Bb5+=) 15.Be4+= bc4?? (better is 15...Be4 16.Nd6 Bc6 17.ab5 ab5 18.Ne8 Be8+/–) 16.Bb7+– Ra7 17.Be4 Be7 18.Ne5 Rc7 19.Qb1 f5 (19...Ba3 20.Ra3 Nd7 21.Nd7 Qd7 22.Qb6+–) 20.Bf3 Ba3 (20...c3 21.Rc1+–) 21.Ra3 Nd7 22.Nd7 Qd7 23.Rc1 (23.Qb6!? c3+–) 23...b5 24.ab5 ab5 25.Qb4 Kf7 (25...Rb8 26.Ra6+–) 26.Ra5 (26.Ra6 Rec8+–) 26...Rb8 27.d5! e5 (27...ed5 28.Rd1 Decoy) 28.d6 Ra7 (28...Rcc8 29.Bd5 Kg6 30.Ra6+–) 29.Bd5 (29.Bc6! Qc6 30.Ra7 Ke6 31.Re7 Kf6+–) 29...Kf6 30.Rca1 (better is 30.Bc6! Qf7 31.Rb5+–) 30...Ra5 31.Ra5 c3 (31...Rb6 32.Bc4! Qd6 33.Qd6 Rd6 34.Rb5 Rd1 35.Bf1 f4+–) 32.Qh4 (worse is 32.Qc3 Qd6 33.h4 Qb6+– (33...Qd5?? 34.Ra6 Ke7 35.Qc7 Qd7 36.Qb8+–)) 32...Kg6 33.Qg3 Kf6 (33...Kh6 34.f4 g6 35.fe5+–) 34.f4 ef4 35.ef4 g6 (35...h6 36.Qc3 Kg6+–) 36.Qc3 1–0. Batton,Thomas – Gauthier,David, Verbandsliga Nord Baden, 2007.

8.Be2 d5

9.0–0 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 c5 (12...Bd6 13.d3=) 13.d3 (13.bc6 Nc6 14.d3 Qd6=) 13...Nbd7 (13...Bd6 14.Nc3=) 14.Nbd2 (14.Nc3 Bd6=) 14...Qc7 (14...Bd6 15.Qc2=) 15.Qb3 (15.Qc2 Ra8=) 15...Ne8 (15...Ra8 16.Rc1+=) 16.Ne4 (16.d4 Nd6=) 16...Be4 (16...Nef6 17.Qc2=) 17.de4+= Bf6 (17...Nef6 18.Qc2+=) 18.Nd2 (18.Qc2 Nd6+=) 18...Ba1 (18...Nd6 19.Rd1=) 19.Ra1 Nd6 (19...Nef6 20.Qc2=) 20.Qb2 (20.Qc3 Rd8=) 20...Nb7 (20...Rd8 21.e5 Nf5 22.Nf3=) 21.f4 (21.Ra7 Rd8+=) 21...Nf6 22.e5 (22.Ra7 Rd8=) 22...Nd5 23.Ra3 (23.Bd5 ed5 24.e4 Rd8=) 23...Na5 (23...Rd8 24.Ne4=) 24.Qc1 (24.Bd5 ed5 25.e4 Rd8=) 24...Rd8 25.Ne4 Nc4 26.Qc4 Ne7 (26...Qd7=) 27.Qa2 (27.Nd6 Nc8=) 27...Nc8 (27...Rd1 28.Kf2+=) 28.Qe2 (28.Qc2 Qd7=) 28...Qd7 ½–½. Borrmann,Fritz – Woelfelschneider,Peter, TT–17 ETC, 2005.

9.0–0 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 c5 13.Ne5 (13.bc6 Nc6 14.d3 Na5=) 13...Nbd7 14.d3 Qa8 (14...Qc7 15.Nd7 Nd7 16.f4=) 15.Nd7 Nd7 16.Nd2 Bf6 (16...Bg2? 17.Qg4 Bf6 18.Bf6 Nf6 19.Qg2+–) 17.e4 Ba1 (17...Qa3 18.Bf6 Nf6 19.Qc2=) 18.Qa1 ½–½. Bonetti,Shane (2125) – Woelfelschneider,Peter (2315), ETC, 2006.

9.0–0 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.d4 (13.d3 c5=) 13...c6 (13...Qa8 14.Nbd2=) 14.Nbd2 (14.Qe2 Qc7=) 14...cb5 (14...Qc7 15.Qb1=) 15.Bb5 Qa8 (15...Qc7 16.Qb1=) 16.Qb1 Rc8 17.e4 Nf8 18.Bd3 (18.Re1 Qa5 19.Bd3 Ng6=) 18...Ng6 19.g3 (19.Bb2 Rc7=) 19...Bd8 (19...Qa5 20.Bb2=) 20.Re1 Ba6 (20...Qa5 21.Kg2=) 21.Ba6 Qa6 22.d5 ed5 23.ed5 (23.Bf6!? Bf6 24.ed5=) 23...Nd5+= 24.Re8 (24.Qf5 Bf6+=) 24...Nf8–/+ 25.Ne4 (25.Bd4 Bc7 26.Qe4 Re8 27.Qe8 Qd3–/+) 25...Bc7 (25...Nc7 26.Re5–/+) 26.Qb2 Threatening mate... how? 26...f6 27.Rc8 Qc8 28.Qb3 Qe6 29.Nc3 (29.Nfd2 f5 30.Ng5 Qc6–/+) 29...Nc3 30.Qc3 Bd6 31.Ng5 (31.Qd3 Bc5–/+) 31...Be5 (31...Qd5 32.Nf3–/+) 32.Qe1 (32.Qe3 fg5 33.Be5 g4–/+) 32...fg5 33.Qe5 Qe5 34.Be5 Nd7 35.Bd4 g6 (35...g4 36.Kg2–/+) 36.Kf1 (36.Kg2 b5–/+) 36...Kf7 37.Ke2 (37.f3 Ke6–/+) 37...Ke6 38.f3 b5 39.Bg7 (39.Bc3 Ne5–/+) 39...Nc5 (39...b4 40.Bh6–+) 40.Bh6 (40.Kd2 b4–/+) 40...Kf5 41.g4 Kf6 42.Bf8 (42.Kd2 Ne6–/+) 42...Ne6 (42...Nd7 43.Bb4–+) 43.Bd6 Nf4 (43...Nd4 44.Ke3 Ke6 45.Bc5 Nc2 46.Ke4–+) 44.Kd2 (44.Ke3 Ng2 45.Kd4 Ne1–/+) 44...Ke6 (44...Nd5 45.Kd3–+) 45.Bf8 Kd5 Black fights for the Initiative 46.Be7 Ne6 47.Kc3 Nd4 (47...Ke5 48.h3–+) 48.Bg5 Nf3 49.Bf4 Ke4 50.Bd6 (50.Bc7 Nh2 51.Bh2 g5–+) 50...Ne5 (50...Nh2 51.Bh2 g5 52.Kb4–+) 51.h3 (51.g5 Nf3–+) 51...Nc6 (51...Ng4 52.hg4 g5 53.Kb4–+) 52.Bc7 (52.Bg3 Kf3 53.Be1 g5–+) 52...Kf3 (52...g5 53.Bd6–+) 53.Kd3 (53.g5 Kg2–+) 53...Kg2 (53...g5 54.Bd6–+) 54.h4 Kh3 55.h5 (55.g5 Kh4 56.Bf4 Nd8–+) 55...Kg4 (55...g5 56.h6–+) 56.h6 (56.hg6 hg6 57.Ke4 b4–+) 56...b4 (56...Kh5 57.Bf4–+) 57.Bd6 b3 (better is 57...g5!? 58.Bf8–+) 58.Kc3 Kh5 (58...Nd4 59.Be5 Ne2 60.Kb3–+) 59.Bf8 (59.Kb3 Nd4 60.Kc4 Nf5–+ (60...Kh6?! 61.Kd4 Kg5 62.Kd3–+)) 0–1. Schmidt,G – Steiner,D, Caorle, 1988.

9.0–0 dc4 10.Bc4 c6 11.Na3 cb5 12.ab5 Qc7 13.Qe2 Rc8 14.Rfc1 Qd8 15.ba6 Na6 16.Nb5 Nc5 17.Na7 Rc7 18.Nd4 Nce4 19.Nab5 Rcc8 20.f3 Nc5 21.Na7 Rc7 22.Ndb5 Rd7 23.d4 Na6 24.Bb3 Nb4 25.e4 Ba6 26.Bc4 Bb7 27.Qe1 Ne8 28.Bf1 Nc7 29.Qc3 Nca6 30.Ba3 Qf8 31.Rcb1 g5 32.Rb3 g4 33.Kh1 gf3 34.gf3 h6 35.Bh3 Kh7 36.Rg1 1–0. Degterev,Pavel (2225) – Keller,Thomas (1795), CP–2011–P–00028, 2011.

9.0–0 c5 10.d4 ab5 (10...dc4 11.Bc4 cd4 12.Bd4 ab5 13.ab5 Ra1 14.Ba1=) 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 (13.cd5 Nd5 14.Nbd2 Qc7=) 13...cd4 14.Bd4 Qc7 15.cd5 Bd5 16.Qb1 Rc8 (16...e5 17.Rc1 Qd6 18.Bb2=) 17.e4 Bb7 (17...Ba8 18.e5 Nd5 19.Bd3=) 18.e5 Nd5 19.Bd3 g6 20.Re1 Bb4 (20...Nf4 21.Be4=) 21.Bc4 (21.Be4 Be7+=) 21...Ba5= 22.Bd3 Nc3 23.Qa1 Nc5 24.Bc4 (24.Bc3 Nd3 25.Ba5 Ne1 (25...ba5?! 26.Rd1–/+) 26.Qe1 ba5–+) 24...N5e4 25.Bf1 (25.Rf1 Nb5 26.Bb5 Nd2 27.Nd2 Bd2+=) 25...Nd2 26.Nd2 Nb5 27.Bb5 Bd2 28.Rd1 Bb4 (28...Qc2 29.f3 Bf4 30.Qb1–/+) 29.Rb1 (29.Qb1 Bc5 30.Bc5 Qc5–/+) 29...Ra8 30.Qb2 Bc5 31.Qc3 (31.Bd3 Bd4 32.Qd4 Rd8–/+) 31...Ra3 (31...Rd8 32.Bc5 Qc5 33.Qc5 bc5 34.f3–/+) 32.Qc1 (32.Qb2 Bd5 33.Qc1 Ra5–/+) 32...Be4 (32...Ra5 33.Be2–/+) 33.Ra1 (33.Bc5 Qc5 34.Qc5 bc5–/+) 33...Ra1 (worse is 33...Bd4 34.Qc7 Ra1 35.Bf1+=) 34.Qa1 Qd8 35.Bc5 bc5 36.Qc3 Qb6 37.Bd3 Bd3 38.Qd3 Qa5 39.f4 (39.Qd1 c4 40.f4 c3–+) 39...Qe1 40.Qf1 Qe3 41.Qf2 Qc1 42.Qf1 Qc2 (42...Qf1 43.Kf1 Kg7 44.g4–+) 43.Qf2 (43.h3 h5–+) 43...Qb1 44.Qf1 Qb3 0–1. DEFFM – GuestHJMJ, freechess.org, 2018.

9.0–0 c6 10.d3=.

7.a4 a5

8.Nc3= 0–0 9.Be2 d6 10.0–0 e5 11.d4 e4 12.Nd2 Re8 13.d5 Bf8 14.Qc2 Qe7 15.Rae1 Nbd7 16.Nb3 Bc8 17.Bd1 Qe5 18.Ne2 Qg5 19.Ng3 Qg6 20.Nd2 Nc5 21.Be2 Bg4 22.Bf6 Be2 23.Re2 gf6 24.Ra1 (24.Qa2 f5+=) 24...h5 (24...Bg7 25.Nb3=) 25.Ree1 (25.f3 f5+=) 25...Bh6 26.Nb3 Nd3 27.Rf1 h4 28.Ne2 Kh8 29.Nbd4 Rg8 30.g3 Rae8 31.Kg2 Re5 32.Nc6 Rh5 33.Rh1 Qg4 Black prepares the advance h3 34.Ned4 h3 35.Kf1 Ne5 36.Qe2 Nf3 (36...Kh7!?+=) 37.Nf3+/– ef3 38.Qd3 Re8 39.Ke1 Re4 40.Rc1 f5 41.Kd2 Bg7 42.Rc2 Bf6 43.Kc1 Rg5 44.Kb1 Rg8 45.Rd1 Rge8 46.Rdd2 Kg8 47.Ka2 Bh8 48.Rc1 Kf8 49.Kb3 Qg6 50.Qc2 Qg4 51.Rcd1 Qh5 52.Rc1 Qg6 (52...Qg4 53.Ka2 Kg8+=) 53.Rd3 f4 54.ef4?? (better is 54.gf4 Qg2 55.Ka2+/–) 54...Re2–/+ 55.Rd2 Rd2 56.Qd2 Re2 57.Qd1 Rb2 (worse is 57...Rf2 58.Nb8–+) 58.Ka3 Rf2 59.Nd4 (59.Qb3–+) 59...Qf6 (worse is 59...Rh2 60.Rc3 Qe4 61.Nf3 Bc3 62.Nh2–+) 0–1. Remetean,Vasile (2115) – Kotan,Ladislav (2360), Zuzmara op Aggtelek, 2004.

8.Nc3 0–0 9.Be2 d6 10.d4 Nbd7 11.0–0 g6 12.Nd2 d5 13.cd5 ed5 14.Qb3 Bd6 15.Bf3 Bb4 16.Rfd1 Bc3 17.Qc3 Re8 18.Rac1 Rc8 19.Qb3 Nf8 20.Be2 Ne6 21.Nf3 Kg7 22.Ne5 h5 23.f4 Ne4 24.Bf3 f5 25.Be4 fe4 26.Kh1 Qf6 27.g4 h4 (27...hg4 28.Rg1+=) 28.f5 Ng5 (28...gf5 29.Rf1 f4 30.ef4 Kg8+/– (30...Nf4?? 31.Qe3 Qh6 32.g5+–)) 29.Ng6+– Ba8 (29...Nf3 30.Rc3+–) 30.Rc3 (30.Nh4?! Nh3 31.Ng6 Nf2 32.Kg2 Nd1 33.Rd1 c6+=) 30...c6 (30...Kg8 31.Qc2 (31.Nh4?! Qh6=) 31...Ne6 32.Ba3+–) 31.Rdc1 (31.Nh4?! Nh3 32.Ng6 Nf2 33.Kg2 Ng4=) 31...h3 (31...Nh3 32.R1c2 Rg8 33.bc6+–) 32.bc6 Nf3 (32...Rc6 33.Rc6 Bc6 34.Qb6+–) 33.Qd5 Rcd8 34.Qb5 Qg5 35.c7 Qg4 36.R3c2 Nd2 (36...Rc8 37.Qd7 Kh6+–) 37.d5 Kh6 38.Nh4 (38.Nh4 Rc8 39.Rg1 Qg1 40.Kg1 Rg8 41.Kh1+–) 1–0. Hering,Hartmut – Manolis,George (1640), DJ–CT18/pr53, 2011.

7.a4 ab5

8.ab5 Ra1

9.Ba1 d5 10.Nc3 0–0 11.Be2 dc4 12.Bc4 Nbd7 (12...Qd6 13.d3=) 13.d4 Qa8 14.0–0 c5 15.bc6 Bc6 16.Be2 Ne4 (16...Rc8 17.Qb1=) 17.Qb3 (17.Qb1 Rb8=) 17...Rb8 (17...Rc8 18.Rc1=) 18.Bb2 b5 19.Ra1 (19.Nb5? Bb5 20.Bb5 Qa5–+) 19...Qb7 Black intends b4 20.Ne4 (20.Rc1 Nef6+=) 20...Be4 21.Ra5 Bd5 22.Qd1 (22.Qb5?? Qc7 23.Qa4 Rb2–+) 22...b4 23.Qa1 (23.Bd3 Bd6+=) 23...Bd6 24.Ra7 Ra8 25.Ra8 Qa8 26.Qa8 (26.Qb1 Nf6+=) 26...Ba8 27.Nd2 Nb6 28.Bd3 (28.Bb5 Kf8+=) 28...Bc6 (28...Na4 29.Bc1+=) 29.e4 (29.Bc1 Na4+=) 29...Na4 30.Ba1 (30.Bc1 Nc3+=) 30...Nc3 31.h3 (31.f3 Bf4 32.Nb3 h6+=) 31...Bc7 32.Bc3 bc3 33.Nb1 Bb5 (33...Ba5 34.Na3+=) 34.Bc2 Ba5 35.g3 Bb4 (35...Kf8 36.Kg2+=) 36.Kg2 (36.f4 Bc4+=) 36...f5 (36...Kf8 37.Kf3+=) 37.f3 Kf7 38.Kf2 g6 (38...fe4 39.fe4 e5 40.Ke3–/+) 39.Ke3+= Bc4 40.d5 (40.h4 Kf6+=) 40...Bc5–/+ Black gets in control (worse is 40...ed5 41.Kd4=) 41.Kf4 ed5 42.Nc3 d4 43.Nd1 (better is 43.Na4!? Bd6 44.e5–+) 43...Bd6 44.e5 Ba3 The mate threat is Bc1 45.g4 (45.Kg5 Kg7 46.g4 Bc1 47.Kh4 g5 48.Kg3 Bf4 49.Kf2 d3–+) 45...Bc1 46.Kg3 f4 47.Kg2 (47.Kh4 d3 48.Ba4 Ke6–+) 47...d3 48.Ba4 Ke6 49.Nf2 (49.g5 Ke5 50.Nf2 Be3–+) 49...Ke5 50.Ne4 Kd4 51.Kf2 Ba2 52.Ke1 (52.Nd6 Be3 53.Kg2 d2–+) 52...Ke3 Black prepares the advance d2 53.Bd1 Bc4 54.Kf1 d2 55.Kg2 Be2 (55...Be2 56.Nd2 Bd1 57.Nf1 Kd3–+) 0–1. Welti,Manfred (2090) – Fernandez Vicente,Carmelo (2270), corr Coppa Latina–6 bd09, 2003.

9.Ba1 Ne4 10.Bg7+/– Rg8 11.Bb2 d5 12.cd5 Bd5 13.Ne5 (better is 13.Qc2+/–) 13...f6?? (better is 13...Bh4 14.g3 Qf6+=) 14.Qh5+– Kf8 (14...Rg6 15.Qh7 fe5 16.Qg6 Kd7+–) 15.Qf7 1–0. DEFFM – MJLMK, freechess.org, 2018.

9.Ba1 0–0

10.Qc2=.

10.Be2 c5 11.bc6 (11.0–0 d5 12.d3 (12.d4 Nbd7 13.cd5 Nd5 14.Nbd2 Qc7 15.Nc4 Rc8 16.Qb1=) 12...Nbd7 13.Bb2 Qc7 14.Qc2 Ra8 15.Nbd2 Ra2 16.Ra1=; 11.d3 d5 12.Nbd2 (12.0–0 Bd6 13.Qc2 Nbd7 14.Bb2 Qc7 15.Nbd2 Ra8 16.cd5=) 12...Nbd7 13.0–0 Qc7 14.Qc2 Ra8 15.Rc1 e5 16.cd5=; 11.Qa4 Qc7 12.d3 d6 13.0–0 Nbd7 14.Qc2 Ra8 15.Bc3 d5 16.Nbd2=; 11.d4 d5 12.0–0 (12.Nbd2 Nbd7 13.0–0 cd4 14.Bd4 Qc7 15.Qa1 Ra8 16.Qb2=) 12...Nbd7 13.Qc2 dc4 14.Nbd2 Qa8 15.dc5 Nc5 16.Bd4=) 11...Nc6 12.Nc3 (12.Bf6 Bf6 13.d4 d5 14.cd5 Qd5 15.0–0 Rc8 16.Nc3=; 12.0–0 d5 13.cd5 Nd5 14.Nc3 Ncb4 15.Qb3 Nf6 16.d4=; 12.Bb2 d5 13.0–0 dc4 14.Bc4 Nb4 15.d3 Bf3 16.Qf3+=) 12...d5 13.cd5 Nd5 14.Nd5 (14.Qb1 Ncb4 15.0–0 Qd7 16.Nd5=) 14...Qd5 15.0–0 (15.Qb1 Ra8 16.0–0=) 15...Ra8 (15...b5 16.Qb1=) 16.Qb1 Qa5 17.Bc3 Bb4 18.Rc1 Bc3 19.Rc3 Qa1 20.Rb3 Qb1 21.Rb1 Ba6 22.Kf1 (22.Rb6? Be2 23.Ne1 Ne5–+) 22...Be2 23.Ke2 Rb8 24.Rc1 Rc8 25.Rc3 Kf8 (better is 25...b5!?=) 26.Ne5!+/– Ne7 (26...Ne5 27.Rc8) 27.Nd7 Ke8 28.Nb6 Rc3 29.dc3 Kd8 30.Kd3 Nf5 31.g3 Kc7 32.Nc4 f6 33.e4 Nh6 34.h3 Nf7 35.f4 Kc6 36.Kd4 h5 37.e5 Kb5 38.f5 ef5? (38...fe5 39.Ne5 Nd8 40.c4 Kb6+–) 39.e6 Nd8 40.Kd5 Nc6 41.Nd6 Kb6 42.Nf5 1–0. Bulcourf,Carlos – Martin y Herrera,Jai, Florida VALLE, 1993.

10.Be2 Bc5 11.Qa4 Re8 12.Qa7 Bf3 13.Bf3+= d5 14.cd5 Nd5= 15.Nc3 Nb4 16.0–0 Nd3 17.Be2 c6 18.Qa4+= Nb4 19.d4 Bd6 20.Rb1 Qh4 21.g3 Qe7 22.Ne4 c5 23.Nd6 Qd6 24.dc5 bc5 25.Rd1 Qb6 26.Bf3 Re7 27.Be5 Nd5 28.Bd5+– ed5 29.Rd5 h5? 30.Rd6 Qc7 31.Re6! fe6 32.Bc7 Rc7 33.Qc4 Rf7 34.Qe6 Nd7 35.b6 g5 36.Qg6 Rg7 37.Qe8 Nf8 38.Qc8 g4 39.b7 Rb7 40.Qb7 Ng6 41.Qd5 (41.Qd5 Kg7 42.Qh5+–) 1–0. pierre – cgman15, internet, 2009.

10.Be2 d5

11.0–0 dc4 12.Bc4 c6 13.d3 Bd6 14.e4 cb5 15.Bb5 Nbd7 16.Nbd2 Qc7=.

11.0–0 dc4 12.Bc4 Bd6 A) 13.Qe2 A1) 13...Qe7 14.Nc3 Nbd7 (14...Rc8 15.e4 Nbd7 16.d4 Bb4=) 15.d4 Ra8 16.Bb2 (16.Rc1= Ne4=) 16...c5=; A2) 13...Nbd7 14.d4 Qa8 15.Nbd2 Bb4 16.Nb3 Rc8=; B) 13.d4 Bd5 14.Bd3 Ne4 15.Nc3 Nc3 16.Bc3 f5=.

11.0–0 dc4 12.Bc4 Nbd7 13.d3 Bd6 14.e4 c5 15.bc6 Bc6 16.Qc2 Qa8=.

11.0–0 dc4 12.Bc4 Nbd7 13.d4 Qa8 14.Bb2 Bf3 (14...c6 15.Nbd2=) 15.Qf3 Qf3 16.gf3 Ra8 (16...Rc8 17.Nc3=) 17.Nc3 Ra7 (17...Bb4 18.Ne4=) 18.f4 (18.Rc1 Ba3 19.Ba3 Ra3+=) 18...Ra8 (18...Kf8 19.Bd3+=) 19.Ra1 (19.Rc1 Kf8+=) ½–½. Kilpatrick,Robert – Wallwork,George E, SCO–ch corr Scotland, 1990.

11.0–0 dc4 12.Bc4 Re8 13.Qe2 Qd6 14.Rc1 Ng4 15.e4 Qf4 16.h3 Nf6=.

11.d3 A) 11...Qc8 12.cd5 (12.0–0 dc4 13.dc4 Rd8 14.Qc2 c6 15.Nc3 Nbd7 16.Rd1 cb5=; 12.Nbd2 dc4 13.Nc4 Bb4 14.Ncd2 Bf3 15.Bf3 Nd5 16.Qb3 Rd8=; 12.Bf6 Bf6 13.d4 dc4 14.Bc4 c5 15.bc6 Nc6 16.Nbd2 e5=) 12...Nd5 13.0–0 c5 14.bc6 Nc6 15.Nc3 Ndb4 16.d4 Qd7=; B) 11...c6 12.0–0 dc4 13.dc4 cb5 14.Qd8 Rd8 15.cb5 Nbd7 16.Rd1 Nd5=; C) 11...Bd6 12.0–0 dc4 13.dc4 Qe7 14.Qc2 Rd8 15.Nbd2 Nbd7 16.Rd1 e5=; D) 11...dc4 12.dc4 Qc8 (12...Nbd7 13.0–0 Qa8 14.Nc3 Rd8 15.Qc2 c6 16.Bb2 Qb8=; 12...Bd6 13.0–0 Qe7 14.Qc2 Nbd7 15.Rd1 Rd8 16.Nbd2 Nc5=; 12...c6 13.0–0 Nbd7 14.bc6 Bc6 15.Nbd2 Qc8 16.Nd4 Bb7=) 13.Nc3 Rd8 14.Qc2 Nbd7 15.0–0 c6 16.Rd1 cb5=; E) 11...c5 12.0–0 Bd6 (12...Nbd7 13.Nc3 Bd6 14.cd5 ed5 15.Qc2 Qc7 16.d4 Rc8=) 13.Be5 Be5 14.Ne5 Nbd7 15.f4 Qc7 16.Nd7 Qd7=; F) 11...Bb4 12.Bc3 Bc3 (12...Bd6 13.0–0 Nbd7 14.Nbd2 e5 15.Qc2 c5 16.bc6 Bc6=) 13.Nc3 e5 14.cd5 Nd5 15.Qb3 Re8 16.0–0 c5=; G) 11...Nbd7 12.0–0 c5 (12...c6 13.bc6 Bc6 14.cd5 Nd5 15.Qc2 Qc7 16.Rc1 Rc8=; 12...dc4 13.dc4 c6 14.bc6 Bc6 15.Nbd2 Qc8 16.Nd4 Rd8=; 12...Bd6 13.Nbd2 e5 14.d4 e4 15.Ne5 Re8 16.Nc6 Qa8=) 13.bc6 Bc6 14.cd5 Nd5 15.Nc3 Nc3 16.Bc3 Qc7=.

7.a4 d5

8.Qc2 0–0 9.d3 (9.cd5 Nd5 10.Bd3 h6+=) 9...dc4 10.dc4 (10.Qc4 Bd5 11.Qc3 ab5 12.ab5 Ra1 13.Ba1 Qd7+=) 10...ab5 (10...Be4 11.Qd2–/+) 11.cb5 Bb4 (11...Be4 12.Qc4+=) 12.Bc3 (12.Nc3 Be4 13.Qb3 c5+=) 12...Qe7 (12...Nd5 13.Bb4 Nb4 14.Qb2+=) 13.Be2= Nd5 Black is in command 14.0–0 Rd8 (14...Nc3 15.Nc3 c6 16.Rfc1=) 15.Ne5 (15.Bb2 c5=) 15...Bc3 (15...Nc3 16.Nc3 Qf6 17.Rfb1=) 16.Nc3= Qc5 17.Bd3?? (better is 17.Nc4=) 17...Qc3–+ 18.Bh7 Kf8 19.Ng6? (19.Qe4 Nd7 20.Nd7 Rd7 21.Rfc1–+) 19...fg6 20.Qg6 Qf6 21.Qh5 (21.Qg3 Rd7 22.Be4 c6 23.Bd5 cd5–+) 21...Qh6 (21...Nc3 22.Bc2–+) 22.Qf3 Ke7 23.Be4 (23.Bc2 Nc3 24.Qg4 c5–+) 23...Nd7 (23...Qh4 24.Bg6 Rf8 25.Qe4 Qe4 26.Be4–+) 24.Rfd1 (24.Bd5 Bd5 25.e4 Bb7–+) 24...N7f6 (24...Nc5 25.Bd5 Bd5 26.Qg3–+) 25.Rd4 (25.Bc2 Qh5 26.Qg3 Qg4 27.Qg4 Ng4–+) 25...Rh8 (25...Qg5 26.Rc4–+) 26.h3 g5 (26...Qg5 27.Bd5 Bd5 28.e4–+) 27.Qg3 (27.Bd5 g4 (worse is 27...Nd5 28.Rc1–+; worse is 27...Bd5 28.e4 c5 29.bc6 Bc6 30.Qg3–+) 28.Qg3 Bd5–+ (28...ed5?! 29.Qc7 Nd7 30.Qb7 gh3 31.Qd5=; 28...Nd5 29.Rg4 Qf6 30.Rc1–+)) 27...Ne4 28.Re4 Rac8 (28...c5 29.Rg4–+) 29.Rc4 c6 30.e4 Nf4 31.bc6 (31.Qe3 cb5 32.Rc8 Rc8 33.ab5–+) 31...Ne2 32.Kh2 Ng3 33.c7 Ne2 (better is 33...Ne4 34.f3 Qf6 35.Ra2–+) 34.Rb1 g4 35.Rb3 (35.Kh1 Qf4 36.Rc5 Rh3 37.gh3 Be4 38.f3 Bf3) 35...Qf4 (35...Qf4 36.Kh1 Qf2 37.Rc1 Be4 38.Rf3 Rh3 39.Rh3 Qg2) 0–1. Trokenheim,Marek – Hoeglund,Leif, Stockholm SWE, 1983.

8.d4 0–0 9.Nc3=+.

8.d4 Ne4 9.Nbd2 (9.Ba3 0–0=) 9...Bb4+= 10.Be2 (10.Qe2 ab5 11.ab5 Ra1 12.Ba1 Qf6 13.cd5 Bd5–/+) 10...Bc3 (10...dc4 11.Bc4 Nd2 12.Nd2 Bg2 13.Rg1+=) 11.Qc2 White fights for the Initiative 11...Bb2 12.Qb2 Nd2 13.Nd2 a5 (13...ab5 14.cb5 0–0+=) 14.c5 (14.cd5 Bd5 15.0–0+/–) 14...c6 (14...0–0 15.0–0+/–) 15.0–0 Nd7 16.Rfc1 Rc8 17.Nb3 0–0 18.Qc3 (18.Qd2 Ra8+/–) 18...f5 (18...e5 19.Qd2+/– (19.de5?! cb5 20.ab5 Nc5+=)) 19.cb6 (better is 19.Qd2+/–) 19...Qb6? (better is 19...cb5 20.Qd2 ba4+/–) 20.Qa5+– cb5 21.ab5 (21.Qb5 Qb5 22.Bb5 Rc1 23.Rc1 Nf6+–) 21...Ra8 (21...Qd6 22.Qa7 Rc1 23.Rc1+– (23.Nc1?! Ra8 24.Qa8 Ba8 25.Ra8 Kf7+=)) 22.Qb6 Nb6 23.Nc5 Bc8 (23...Ra1 24.Ra1 Bc8 25.Na4 Na4 26.Ra4+–) 24.Ra8 Na8 25.Ra1 (25.h4 Kf7+–) 25...Nb6 26.h3 (26.Na4 Na4 27.Ra4 Bb7+–) 26...Kf7 (26...Rf7 27.g3+–) 27.Ra7 Kf6 28.Rc7 Na8 29.Rc6 Re8? (29...Ke7+–) 30.b6 Ke7 (30...Kf7 31.Bd3+–) 31.b7 Bd7 (31...Bb7 32.Re6 Kf7 33.Re8 (33.Nb7?! Ke6 34.Nc5 Kf6=) 33...Ke8 34.Nb7+–) 32.ba8Q (32.Bb5 Bc6 33.Bc6 Rd8 34.ba8Q Ra8 35.Ba8 Kd6+–) 32...Ra8 33.Rc7 (33.Rc7 Kf6 34.Nd7 Kg5 35.f4 Kh6 36.g4 fg4 37.hg4+–) 1–0. Oze,Kristian (1845) – Tardy,Andras (1895), Berze mem 7th, 1996.

8.cd5 Bd5 9.Nc3 0–0=.

6.c4 c5

7.Nc3 d5 8.cd5 ed5 9.Bd3 Nbd7 10.0–0 0–0 11.h3 Re8 12.Re1 Bd6 13.Bc2 Rc8 14.Rc1 Bb8 15.Bb1 d4 16.ed4 Qc7 17.Re8 Re8 18.g3 Nh5 19.dc5 bc5 20.Ng5 g6 21.Be4 Be4 22.Nge4 (22.Nce4?! h6 23.Nf7 Kf7 24.Qf3 Kg8 25.Qb3 Kf8=) 22...Ne5 23.Nd5 Qd8 24.Rc5 Re6?? (24...f5 25.Be5 Be5+=) 25.Qc1 Nd3 (25...Qd7 26.Rc8 Kg7+–) 26.Rc8 (26.Rc8 Re8 27.Nef6 Nf6 28.Nf6 Kf8 29.Ne8 Nc1 30.Rd8+–) 1–0. Gierth,Karlheinz (2260) – Raines,David, IECG, 2009.

7.Bd3 d5 8.cd5 Nd5 9.Bg7 Rg8 10.Be5 Rg2 11.Bg3? (11.Bh7 Ne3 12.Qe2–+) 11...Bf6–+ 12.Nc3?? (better is 12.Be5–+) 12...Nc3 13.dc3 Rg3! 14.hg3 (14.fg3 Bc3 Double attack; 14.hg3 Bc3 Double attack) 14...Bc3 15.Ke2 Qf6 (better is 15...Ba1 16.Qc2 Nd7–+) 16.Nd2–/+ Nd7 (16...Bd2 17.Kd2 Nd7–+ (worse is 17...Qf2 18.Qe2 Qe2 19.Ke2–/+; 17...Bh1? 18.Qh1 Ke7 19.Qa8 Qa1 20.Qb8 Qa2 21.Ke1+–)) 17.Ne4= Be4 18.Be4 0–0–0 19.Qa4 Ba5?? (better is 19...Ba1 20.Qa6 Kc7 21.Qa7 Kd6 22.Rd1 Ke7+=) 20.Rad1 (20.Bh7?! Ne5 21.Qf4 Rd2 22.Kf1 Qf4 23.gf4 Ng4+=) 20...Qb2 21.Kf3 f5 22.Bc6 Ne5 23.Kg2 Rh8 (23...Nd3!? 24.Rdf1 Qg7+/–) 24.Rd6 Ng4? (better is 24...c4 25.Re6 Nd3+–) 25.Qf4 Bd2 (25...Qe5+–) 26.Bd7 Kb7 27.Bc6 Kc7?? (better is 27...Kc8=) 28.Bb7 (28.Rd7 Kc8 29.Qc7) 28...Kb7?? (28...Be3 29.Rc6 Kb7 30.Qc7 Ka8=) 29.Rd7 (29.Rd7 Ka8 30.Qf3 Kb8 31.Qb7) 1–0. Gonzalez Berrendero,Carlos (1740) – Garcia Prados,David (2025), San Sebastian de los Reyes ESP, 2012.

7.d4 cd4 8.Qd4 0–0 9.Nc3+=.

7.d4 d5 8.Nbd2 (8.cd5 ed5 9.Nbd2 0–0+=) 8...0–0 9.Be2 (9.Bd3 a6+=) 9...dc4 (9...a6 10.dc5 ab5 11.cd5 Nd5 12.Bb5 bc5 13.0–0+=) 10.Nc4 cd4 11.ed4 (11.Bd4 Bb4 12.Kf1 Nbd7=) 11...Bb4+= 12.Ncd2 Ne4 (12...Qd5 13.0–0+=) 13.a3 (better is 13.0–0!?=) 13...Bd2–/+ 14.Nd2 Nd2 15.Qd2 Bg2 16.Rg1 Bd5 17.Qh6 g6 18.h4 Qf6 19.0–0–0 (19.Rc1!? Nd7 20.Qg5–/+) 19...Nd7 20.Bd3 Ba2 21.Rd2 Rac8 22.Kd1 Qf3 (22...Bc4!? 23.Rg3–+) 23.Ke1–/+ Nf6 24.d5 ed5 (better is 24...e5!?–/+) 25.Bg6= fg6 26.Rg6 hg6 27.Qg6 Kh8 ½–½. Lunin,Mikhail (2130) – Ershov,Aleksey (1720), Ramenskoe, 2010.

7.Be2 0–0

8.0–0 d5 9.d3 (--> 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.d3).

8.0–0 d5 9.d4 (--> 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).

6.c4 d6

7.Nc3 0–0 8.Be2 Nbd7 9.0–0 a6 10.a4 ab5 11.cb5 Ne5 12.d4 Ng6 13.Qc2 Qd7 14.h3 c5 15.dc5 dc5 16.Nd2 Qc7 17.Nc4 Nd5 18.a5 ba5 19.Nd5 Bd5 20.e4 Bc4 21.Bc4 Bd6 22.g3 Be5 23.f4 Bd4 24.Kh2 Rfd8 25.Ra2 Bb2 26.Rb2 Qb6 27.h4 Rd7 28.h5 Ne7 29.Qc3 Rd4 30.Re2 Nc8 31.f5 Nd6 32.fe6 Nc4 33.ef7 Kf8 34.e5 Qe6 35.Qc2 Qh6 36.e6 Qh5 37.Kg1 Ke7 38.b6 Nd6 39.Re3 Rf8 40.b7 Nb7 41.Qb1 Rb4 42.Qa1 Qg5 43.Qc3 Nd6 44.Rfe1 Nb5 45.Qa1 a4 46.Qa2 Nd4 47.Kg2 Rb3 48.Rb3 Qd5 49.Kh3 Qb3 50.Qf2 Qd5 51.Qf4 Ne6 52.Qe4 Qe4 53.Re4 c4 54.Rc4 Ra8 55.f8Q Nf8 56.Rc2 a3 57.Ra2 Kd6 58.g4 Kc5 0–1. Caissa – LUPES, playchess.de, 2002.

7.Nc3 c5 8.d4 Nbd7 9.Qc2 (9.Be2!?=) 9...Bf3=+ 10.gf3 cd4 11.ed4 Rc8 12.Rc1 d5 13.c5? (better is 13.Qa4=+) 13...bc5–+ 14.dc5 Bc5 15.Na4?? (better is 15.Qd2–+) 15...Bb4 16.Nc3 d4 17.Qb3 (17.Qd2 Bc3 18.Bc3 dc3 19.Rc3 Rc3 20.Qc3 Nd5–+) 17...Bc3 (17...Rc3?! 18.Qb4 Rc1 19.Bc1–+) 18.Bc3 Rc3 19.Rc3 Qa5 20.Qa3 (20.Rg1 dc3 21.Qc2 0–0–+) 20...Qc3 21.Qc3 dc3 22.Bd3 Ke7 23.0–0 (23.Ke2 Rc8–+) 23...Ne5 24.Be4 Ne4 25.fe4 c2 26.Rc1 Rc8 27.a4 Nd3 (28.Rc2 Rc2–+) 0–1. Meybohm,Dirk – Schmeier,U, 1988.

7.Nc3 Nbd7 8.d4 c5 9.bc6 Bc6 10.Bd3 e5 11.0–0 0–0 12.Nd2 ed4 13.ed4 Re8 14.Re1 Nf8 15.Nf1 d5 16.cd5 Nd5 17.Nd5 Bd5 18.Bb5 Nd7 19.Ne3 Nf6? (better is 19...a6!? 20.Nd5 ab5+/–) 20.Be8+– Qe8 21.Nf5 Be6 22.Ne7 Qe7 23.d5! Rd8 (23...Bd5 24.Re5 Double attack (24.Re7 Pinning; 24.Re7 Deflection; 24.Re5 Decoy); 23...Nd5 24.Qd5) 24.Bf6 (24.de6?! Rd1 25.ef7 Kf7 26.Rad1 Qb4+=) 24...Qf6 25.Qa4 (25.de6?! Rd1 26.ef7 Kf7 27.Rad1 Qc6+=) 25...Rd5 (25...b5 26.Qb5 Qf5+–) 26.Qe8 1–0. forsetinn (1835) – tmb2 (1655), gameknot.com, 2013.

7.Be2 0–0 8.0–0 Nbd7 9.Nc3 a5 10.d4 d5 11.a4 Re8 12.Qc2 g6 13.Rfd1 Ne4 14.Ne4 de4 15.Nd2 Nf6 16.c5 bc5 17.dc5 Bd5 18.Rac1 Nd7 19.c6 Nc5 20.Bd4 Nd3 21.Bd3 ed3 22.Qd3 Bb4 23.Nc4 f6 24.e4 Bc4 25.Qc4 Kf7 26.Bc5 Qd1 27.Rd1 Red8 28.Rd7 Rd7 29.cd7 Rd8 30.Qb4 ab4 1–0. Roos – Voss, 1995.

7.Be2 Nbd7

8.0–0 0–0 (--> 6.c4 0–0 7.Be2 d6 8.0–0 Nbd7).

8.a4 Nc5 9.0–0 h6 10.d3 Qd7 11.Nbd2 e5 (11...a6 12.Qc2+=) 12.Nb3 (12.d4 ed4 13.ed4 Ne6+/–) 12...Ne6 13.d4 ed4 14.Nbd4 Nd4 15.Nd4 a5 16.Bf3 Bf3 17.Qf3 (17.gf3?! 0–0–0=) 17...0–0 18.Nc6 Nh7 19.Rfe1 Bf6 20.Bd4 Rae8 21.Rad1 Qe6 22.Qe2 Ng5 23.f3 g6 24.h4 Nh7 25.g3 Bg7 26.Kg2 Nf6 27.g4 Nd7 28.g5 h5 (28...hg5 29.hg5 Qf5 30.f4=) 29.Qd3 Kh7 30.Qc3 f6 31.e4 Rf7 32.Qc2 Ref8 33.Re3 f5?? (33...Ne5!? 34.gf6 Bh6+=) 34.Bg7?? (better is 34.ef5!? Qf5 35.Qf5 Rf5 36.Bg7 Kg7 37.Nd4+–) 34...Kg7 (34...Rg7 35.Qc3 Nc5 36.Nd4+=) 35.Qe2 (35.Nd4!? Qe8 36.Qc3+/–) 35...Re8 36.Re1 Ne5 (36...f4 37.Ra3=) 37.Ne5 (better is 37.ef5!? Qf5 38.Ne5 de5 39.Re5 Re5 40.Qe5 Qe5 41.Re5+–) 37...de5+= (37...Qe5 38.ef5 Qe3 39.Qe3 Re3 40.f6 (40.Re3?! gf5 41.Re6 f4+–) 40...Kf8 41.Re3+–) 38.Rd1 fe4 39.Re4 (worse is 39.fe4 Rf4–/+) 39...Qe7 40.Rd5 Attacks the isolani on e5 40...Qa3 41.Ree5 (41.Rde5?! Re5 42.Re5 Kh7+/– (42...Qa4? 43.Re7 Kg8 44.Re8 Kh7 45.Qe5+–)) 41...Ref8 42.Re3 Qb4 (42...Qa4 43.Re7 Qa3 44.Rdd7+–) 43.Qd3 (43.Qc2 Kh7+/–) 43...Qb2 (43...Qa4!? 44.Rde5 Qa1+=) 44.Kg3 Qc1 (44...Kh7!?+/–) 45.Qc3+– White plans c5 45...Qc3 46.Rc3 Rf4 47.Rd7 R4f7 48.Rf7 Rf7 49.c5 Rd7 50.cb6 cb6 51.Rc6 Rd4 (51...Rb7 52.Kf4 Rf7 53.Ke4 Re7 54.Kd5+–) 52.Rb6 Ra4 53.Ra6 Ra1 (53...Kf7 54.Rf6 Kg7 55.Rc6+–) 54.b6 (better is 54.Ra7 Kf8 55.b6 Rg1 56.Kf2 Rb1+–) 54...Rb1?? (54...Kf7+–) 55.Ra7 Kf8 56.b7 a4 57.Ra8 Ke7 58.b8Q Rb8 59.Rb8 Kd6 60.Ra8 Ke6 1–0. Pietras,Zbigniew – Tomczyk,Ryszard, Warszawa Poland, City Ch–B, 2013.

8.d4 0–0 9.Nbd2 Ne4 (9...a6 10.ba6 Ra6 11.0–0=) 10.Ne4 Be4 11.0–0 Bf6 (11...a6 12.a4=) 12.Nd2+= Bg6 (12...Bb7 13.Bd3+=) 13.Qb3 (13.Bf3 Rb8+/–) 13...a6+= 14.Bf3 Ra7 15.a4 a5 (15...e5 16.Ne4+=) 16.Ne4 Be7 (16...Bh4 17.Rad1+=) 17.Rfc1 (17.Rad1 Re8+=) 17...Nf6 (17...e5 18.c5+=) 18.Ng3 d5 19.c5 (19.cd5 ed5 20.Rc6 Re8+=) 19...h5 (19...Nd7 20.e4 Nf6 21.e5+=) 20.cb6 (20.Ba3 h4 21.Ne2 Be4+=) 20...cb6 21.Rc6 h4 (21...Rc7 22.Rac1 (worse is 22.Rb6 h4 23.Ne2 Bc2+=) 22...Rc6 23.bc6+=) 22.Nf1 (22.Ne2 Ne4+=) 22...Ne4 (better is 22...Rc7+=) 23.Rb1 (better is 23.Rac1+=) 23...Nf2!–/+ 24.Kf2? (better is 24.Ra1 Nd3 25.Ba3–/+) 24...Bb1–+ 25.Qc3 (25.Ba3 Ba3 26.Qa3 Rc7 27.Rc7 Qc7–+) 25...Bg6 26.Qc1 Bd6 27.Ba3 Ba3 28.Qa3 Rc7 29.Qc1 (29.Qc3 Rc6 30.bc6 Qd6–+) 29...Rc6 30.bc6 (30.Qc6 Qb8 31.Qc3 Qc8–+) 30...Qc7 (30...Bd3 31.Qc3 Bf1 32.Kf1–+) 31.Be2 Rc8 32.Bb5 f6 (32...h3 33.Ng3–+) 33.Qc3 (33.Qd1 f5–+) 33...Be8 34.g3 (34.Qb3 Bc6 35.Bd3 Bd7–+) 34...Bc6 0–1. GuestNKTX – qnight, freechess.org, 2016.

6.d3 0–0

7.a4 A) 7...d5 8.Be2 (8.Nbd2 c5 9.Be2 a6 10.0–0+=) 8...c5 9.0–0 Nbd7 10.Nbd2=; B) 7...c5 8.g3 (8.Qd2 d5 9.Be2 Nbd7 10.0–0+=) 8...a6 9.Na3 d5 10.Bg2+=; C) 7...a6 8.Nbd2 (8.Be2 ab5 9.ab5 Ra1 10.Ba1+=) 8...c6 9.bc6 Nc6 10.Be2+=.

7.Nbd2 a6 8.a4 (8.c4 ab5 9.cb5 d5 10.Be2+=) 8...d5 (8...c6 9.bc6 Nc6 10.Be2+=) 9.Be2 Nbd7 (9...c5 10.bc6=) 10.0–0 Bd6 11.c4 Qe7 12.h3 (12.cd5 ed5 (12...Bd5? 13.e4+–) 13.Qc2 Nc5=) 12...e5 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.cd5 Nd5 14.Nc4 ab5 15.ab5 f5 (15...Ra1!? 16.Qa1 f6=) 16.Nd6 cd6 17.Qb3 Kh8 18.Ra8 Ra8 19.Ra1 Ra1 20.Ba1 h6 21.Qa2 Qd8 22.Nd2 Nc5 (22...Nc7!?+/–) 23.d4 ed4 24.Bd4 Ne6 25.Bf3 (25.Bb2 Kh7+/–) 25...Nd4+= 26.Bd5?? (better is 26.ed4 Nc3 27.Qc4 Bf3 28.Nf3+= (28.Qc3?! Bd5+=)) 26...Ne2–+ (26...Ne2 27.Kh2 Nc3–+) 0–1. Lehtonen,Ture – Miezis,N (2555), Norrkoping SWE, Open, 2012.

7.Nbd2 c6 8.a4 (8.c4 d5 9.Be2 cb5 10.cb5+=) 8...a6 9.bc6 Nc6 10.Be2+=.

7.Nbd2 d5 8.a4 (8.Be2 c5 9.0–0 a6 10.a4+=) 8...Nbd7 9.Be2 a6 10.0–0=.

7.Nbd2 d6 8.c4 Nbd7 9.Qc2 Ng4 (9...a6 10.Be2+=) 10.h3+= Nge5 11.Be2 Bf6 12.d4 Ng6 13.Bd3 Be7 14.a4 Re8 15.0–0–0 (better is 15.a5!?+/–) 15...c6 (15...a6!?+=) 16.h4= cb5 17.ab5 d5 (17...h6!? 18.Bg6 fg6 19.Qg6 Nf8+=) 18.h5+/– Ngf8 19.h6 g6 20.Nb3 (better is 20.Kb1!?+/–) 20...Rc8= 21.Qe2?? (better is 21.Nbd2=) 21...dc4–+ 22.Bc4 Bd5 23.Ne5 (23.Nbd2 Qc7 24.Bc3–+) 23...Ne5 24.de5 Qc7 (better is 24...Bc4!? 25.Rd8 Be2 26.Rc8 Rc8 27.Kb1 Bb5 28.Rd1–+) 25.Nd2 Bc4 26.Nc4 Qc4 27.Qc4 Rc4 28.Kb1 Rec8 29.Rd3 Rb4 30.Ra3 Rc7 31.Rd1 Rb5 32.Ra6 (32.Rad3 f6–+) 32...Rd5 (32...Nd7 33.Rc1 Nc5 34.Ra3–+) 33.Bd4 (33.Rd5 ed5 34.Ba3 Ba3 35.Ra3 Nd7–+) 33...Nd7 34.f4 Nc5 35.g4 (35.Ra2–+) 35...Na6 0–1. Ioan,Cesar – Stefan,Bogdan Liviu (2140), Petre Seimeanu Memorial, 2002.

7.Be2 A) 7...d6 8.a4 (8.Nbd2 Nbd7 9.0–0 Nc5 10.a4=) 8...Nbd7 9.0–0 Nc5 10.Nfd2=; B) 7...c6 8.a4 (8.Nc3 cb5 9.Nb5 a6 10.Nc3+=) 8...d5 9.0–0 c5 10.Nbd2=; C) 7...a6 8.a4 (8.c4 ab5 9.cb5 c6 10.a4+=) 8...ab5 9.ab5 Ra1 10.Ba1+=.

6.d4 a6

7.Nc3 0–0 8.ba6 Na6 9.Bb5 c5 10.0–0 Nc7 11.Bd3 d5 12.Rb1 Ne4 13.Be4 de4 14.Ne5 f6 15.dc5 fe5 16.Qd8 Bd8 17.cb6 Nd5 18.Nd5 ed5 19.Be5 Ra2 20.Bd6 Rf6 21.Bc7 Rf8 22.Bd8 Rd8 23.c3 Ra3 24.Rfc1 Rc8 25.f3 ef3 26.gf3 Rac3 27.Rc3 Rc3 28.Kf2 d4 29.ed4 Rf3 30.Kg1 Rd3 31.Rb4 Rd1 32.Kf2 Rd2 33.Kg3 Rg2 34.Kf4 Rh2 35.Ke5 h5 36.d5 Re2 37.Kd6 g5 38.Rc4 g4 39.Rc7 g3 40.Rb7 g2 41.Rb8 Kf7 42.b7 Rb2 43.Rc8 g1Q 44.Rc7 Kf6 0–1. mrkt – Insidious, GameColony.com, 2002.

7.Nbd2 0–0 8.Bd3=+.

7.Nbd2 ab5 8.Bb5= 0–0 (8...Ra5 9.Be2=) 9.0–0 Ba3 (9...d5 10.Ne5=) 10.Ba3 Ra3 11.c4 (11.Qb1 Ne4 12.Qb4 Ra8=) 11...Qe7 12.Ba4 (12.Re1 Bf3 13.Nf3 Ne4=) 12...Bf3 (12...Qb4 13.Bb3=) 13.Nf3 Na6 14.Bb3 Nb4 15.Qb1 Rfa8 16.e4 d6 17.Rd1 Nd7 18.Qb2 e5 19.de5 Ne5 (< 19...de5 20.c5 Nc5 21.Ne5 Nb3 22.ab3 Ra1 23.Ra1=) 20.Ne5 Qe5 (< 20...de5 21.c5=) 21.Qe5 de5 22.Rd7 h5 (22...Kf8 23.Rad1 Na2 24.Ba2 Ra2 25.Rc7=+) 23.Bd1 h4 (23...Ra2 24.Ra2 Ra2 25.Bh5=+ (< 25.Rc7 Ra1 26.Rd7 Na2–/+)) 24.Rc7= Ra2 25.Ra2 Ra2 26.Rd7 Ra1 27.g3 h3 28.f4 Nc6 29.Kf2 Ra2 30.Kg1 Rg2 31.Kh1 ef4 32.gf4 Rf2 33.Ba4?? Rf1 0–1. Esteban,Amalia G – Woelfelschneider,Peter, ETC, 2003.

7.a4 0–0

8.Nbd2 d5 9.Bd3 c5 10.c4 Nbd7 11.ba6 Ba6 12.0–0 Rc8 13.Rc1 cd4 14.ed4 Bb4 15.Qb3 Qe7 16.Bc3 Bc3 17.Rc3 dc4 18.Bc4 Nd5 19.Rcc1 Bc4 20.Rc4 ½–½. Kuhlmann,AEJ – Brus,BW, 1989.

8.Bd3 ab5 9.ab5 c6 (9...Ra1 10.Ba1 c6 11.Nc3=) 10.Ra8 Ba8 11.Nc3 d5 (11...cb5 12.Nb5 Nc6 13.0–0=) 12.0–0 cb5 (12...Nbd7 13.bc6 Bc6 14.Qe2=) 13.Nb5+= Nbd7 (13...Nc6 14.Qe2+=) 14.c3 (14.Qe2 Bc6+=) 14...h6 (14...Bc6 15.Qb3+=) 15.Qc2 (15.Qb3 Bc6+=) 15...Qb8 (15...Bc6 16.Ra1+=) 16.Ra1 Bc6 17.Na7 (17.Qb3 Qb7+=) 17...Bb7 (17...Qb7 18.Nc6 Qc6 19.Qb3+=) 18.c4 (18.Qb3 Rd8+=) 18...Ne8 (better is 18...dc4!? 19.Qc4 Bd5=) 19.cd5+/– ed5 20.Bh7 Kh8 21.Ne5 (21.Bf5 Nef6+/–) 21...Ndf6? (better is 21...Ne5!? 22.de5 g6 23.Bg6 fg6 24.Qg6 h5+/–) 22.Bd3 (22.Nac6 Qc7 23.Ne7 Qe7+–) 22...Nd6 (22...Qc7 23.Nb5 Qb8 24.Qa4+–) 23.Qb3 (23.Nac6 Qc7 24.Ne7 Qe7+–) 23...Bd8 24.Nac6 (24.Ra2 Kg8+/–) 24...Bc6 25.Nc6 Qc7 (25...Qb7 26.Ne5+/–) 26.Ne5 (26.Nb4 Qd7+/–) 26...Be7 (26...Qb7 27.Ra6+/–) 27.Rc1 Qb7 28.Rc6 (28.Ba3 Ra8 29.h3+/–) 28...Nde4 (better is 28...b5!?+/–) 29.Rb6+– Qc8? (better is 29...Qc7+–) 30.Nf7! Kg8 (30...Rf7 31.Rb8 Combination) 31.Nh6! Kh8 (31...gh6 32.Be4 Combination) 32.Nf7! Kg8 (32...Rf7 33.Rb8 Combination) 33.Ne5 Nd2 34.Qb5 Kh8 (34...Qc7+–) 35.Ng6 (35.Ng6 Kg8 36.Ne7 Kh8 37.Nc8 Nf3 38.gf3 Rc8 39.Rf6 g6 40.Qd7 Rd8 41.Qd8 Kh7 42.Rf7 Kh6 43.Qh4) 1–0. DEFFM – GuestQYFV, freechess.org, 2018.

7.c4 ab5=+

8.cb5 0–0 9.Nc3 c6 10.a4 Bb4= 11.Rc1 Ra4?? 12.Qa4+– (12.Qa4 Nd5 13.Be2+–) 1–0. pierre (2025) – CHED (1620), internet, 2006.

8.cb5 d6 9.Bd3 h6 10.0–0 Nbd7 11.Qc2 d5 12.Rc1 Rc8 13.a4 0–0 14.Nbd2 Bd6 15.Ne5 Be5 16.de5 Ng4 17.Nf3 h5 18.h3 Nh6 19.Bd4 c5 20.bc6 Rc6 21.Qd1 Rc1 22.Rc1 f5 23.ef6 Nf6 24.Qb3 Ne4? 25.Be4 de4 26.Qe6 Kh8 27.Qh6 Kg8 28.Qg7# 1–0. Trkn – guest5212, ICC, 2004.

8.cb5 Ne4

9.Nc3 Bb4 10.Qb3 Bc3 11.Bc3= Bd5 12.Bc4 Nc3 (12...Bc4 13.Qc4 d5 14.Qb3=) 13.Qc3 Bf3 14.gf3 Qg5 15.Bf1 Ra7 (15...c6 16.f4 Qg6 17.Bd3+=) 16.f4 Qh4 (16...Qg4 17.h3 Qg6 18.Bd3=) 17.Bg2 0–0 18.0–0 (18.a3 Qh5 19.Qd3 c6=) 18...d5 (18...Rc8 19.Rfc1=) 19.f5 (19.Rfc1 Rc8=) 19...Qg4 (19...c6 20.bc6 Rc7 21.Qb2=) 20.fe6 fe6 21.a4 (21.Rac1 Qe2 22.Qb4 Rf7=) 21...Rf6 (21...c6 22.Kh1=) 22.f3= Qh5 23.a5 (23.Rfc1 Qg6 24.Kh1 Nd7=) 23...ba5 24.b6 cb6 25.Qc8 A double attack 25...Rf8 26.Qe6 Kh8 27.Qb6 Ra6 28.Qc5 Do you see the mate threat? 28...Re8 29.e4 Rh6 ½–½. Woschkat,Karl_Heinz – Mrkvicka,Josef, CiF, 1993.

9.Nc3 Bb4 10.Qb3 Qe7 11.a3 Nc3 12.Qb4 Qb4 13.ab4 Ra1 14.Ba1=+.

9.Nc3 Nc3 10.Bc3 Bd5 11.Qc2=.

6.d4 d5

7.Ba3 c5=.

7.Nbd2 a6 8.Bd3=.

7.Nbd2 Nbd7 8.Bd3 0–0 9.0–0 c5 10.bc6 Bc6 11.c4 Rc8 12.cd5 Bd5 13.e4 Bb7 14.Qa4 Rc7 15.Rac1 Rc1 (15...a6 16.e5 b5 17.ef6 Rc1 18.fe7 Qe7 19.Qa3 Rf1 20.Kf1 Qa3 21.Ba3+=) 16.Rc1 a5 17.Bb5 Nb8 18.Qc2 Ba6 19.Ba6 Na6 20.Qc4 Qa8 21.a3 Qb7 22.h3 (22.Qc6!? Qa7 23.Ne5+=) 22...b5= 23.Qc6 Qa8 (23...Qc6 24.Rc6 Ra8 25.Ne5=) 24.g4 (24.Qb5!? Rb8 25.Qc6+/–) 24...h6 25.Ne5 a4 26.f4 (26.Qb5?! Rb8 27.Qc6 Qc6 28.Nc6 Rb2 29.Ne7 Kf8=) 26...b4 27.g5 (27.Ng6! fg6 28.Qe6 Kh7 29.Qe7+/–) 27...hg5 28.fg5 ba3 29.Ba1 Nh5 (better is 29...Bb4!? 30.Bc3 Nh5 31.Bb4 Nb4=) 30.g6+/– Nf4 31.gf7 Kh7 32.Qc4?? (better is 32.Qa8 Ra8 33.Rf1+/–) 32...Bf6+= (worse is 32...Nh3 33.Kg2 Nf4 34.Kf3+=) 33.Ndf3 Qe4 34.Re1 Qf5 (34...Qd5 35.Qc2 (worse is 35.Qa6 Be5 36.Qf1 Bc7–/+) 35...g6 36.Qh2=) 35.Qa6 Nh3 (35...Be5 36.Ne5 (36.de5? Nh3 37.Kg2 Qg4 38.Kh2 Qf3 39.Qa4 Rf7 40.Qe4 Qe4 41.Re4 Rf1–+; worse is 36.Re5 Nh3 37.Kh2 Qf3 38.Qe6 Nf4–+) 36...Rf7 37.Rf1 Qg5 38.Ng4 Nh3 39.Kh2–+) 36.Kh1= Be5 (36...Rf7 A) 37.Nf7?? Qf3 38.Kh2 Bh4–+; B) 37.Qa4?? Be5 38.Qa3 Bd6–+ (38...Qf3?! 39.Qf3 Rf3 40.de5–+); C) 37.Qa8 Be5 38.Ne5–+) 37.Ne5 Rf7 38.Qd3?? (better is 38.Nf7 Qf3 39.Kh2 Qf2 40.Kh3 Qf3 41.Kh2 Qf2 42.Kh1 Qf3 43.Kg1 Qg3 44.Kf1 Qf3 45.Kg1 Qg3 46.Kh1 Qf3 47.Kg1=) 38...Nf2–+ (38...Nf2 39.Kh2 Nd3 40.Nf7 Qf4 41.Kh1 Qh4 42.Kg2 Qg4 43.Kh2 Ne1 44.Ng5 Kg6 45.Ne6 Qg2) 0–1. Forman,S – Lacko,J, Plzen CZE–ch H14, 1995.

7.Bd3 a6=.

7.c4 0–0

8.cd5 Nd5 9.Nbd2 a6 10.e4 Nb4?? (better is 10...Nf6 11.Qc2 Bb4=+) 11.a3+– Nd5 12.ed5 ed5 (12...Bd5 13.Qc2+–) 13.Bd3 g6 (13...ab5 14.Qc2+–) 14.Qc2 (14.a4 Bf6+–) 14...Nd7 (14...ab5 15.Bb5 c6 16.Bd3+–) 15.ba6 Ba6 16.Ba6 Ra6 17.0–0 Bd6 (17...Re8 18.Ne5+–) 18.Rfe1 c5 19.dc5 bc5 20.Qd3 (20.Qc3 f6+–) 20...Qa8 21.Ne5 (better is 21.a4+–) 21...Qb7?? (better is 21...Ne5 22.Be5 c4+–) 22.Nd7 Qd7 (22...Rd8 23.Nf6 Kg7 24.Rab1+–) 23.Qa6 c4 (23...Rd8 24.Bf6 Rc8 25.Qd3+–) 24.Nc4! (24...dc4 25.Rad1+–) 1–0. Waibel,Ulrich – Ellis,Roscoe, compuserve, 1995.

8.Be2 Nbd7 9.0–0 Ne4 10.Nbd2 Ndf6 11.Ne4 (11.cd5 Qd5 (11...Nd2 12.Qd2 Nd5 13.Rfc1 Bd6 14.Ne5 a6 15.a4 ab5 16.ab5 Ra1=) 12.Bc4 Qf5 13.Bd3 Nf2 14.Bf5 Nd1 15.Bh7 Kh7 16.Rfd1 a6+=; 11.Ne5 Nd2 (11...dc4 12.Ne4 Ne4 13.Bc4 a6 14.ba6 Bd5 15.Bd3 f6 16.Qc2 fe5+=; 11...a6 12.Ne4 Ne4 13.Qc2 Bd6 14.f3 Ng5 15.Nc6 Bc6 16.bc6 f5=) 12.Qd2 a6 13.cd5 Nd5 14.Nc6 Bc6 15.bc6 Bd6 16.f4 Qf6=) 11...Ne4 12.Ne5 (12.Qc2 c6 13.a4 a6 14.Bd3 cb5 15.ab5 Qc7 16.Rfc1 ab5=) 12...f6 (12...a6 13.Qc2 Bd6 14.f3 Ng5 15.Nc6 Bc6 16.bc6 f5=) 13.Nd3 (13.Nc6 Bc6 14.bc6 f5= 15.f3 Nf6 16.cd5 Nd5=) 13...dc4 14.Nf4 c3 15.Bc1 Qd6 (15...Qd7 16.f3 Nd6 17.Qb3=) 16.Qb3 (16.Bc4 Bd5 17.Bd5 ed5 18.f3=) 16...Bd5 (16...a6!?=) 17.Nd5+= ed5 18.Bf3 (better is 18.Ba3! Qe6 19.Be7 Qe7 20.Qd5 Kh8 21.Bd3+/–) 18...f5+= 19.Be2 Rf7 (19...c5 20.f3 Nd2 21.Bd2 cd2 22.dc5 bc5 23.Rad1–/+) 20.Bd3 (20.f3 Nd2 21.Bd2 cd2=) 20...Raf8 (20...c5!? 21.bc6 Qc6–/+) 21.f3= Nd2 22.Bd2 cd2 23.Rad1 f4 24.e4 (24.Bc2 fe3 25.Qe3 c5 26.bc6 Qc6 27.Rd2 Bb4=) 24...de4 25.Be4 (25.fe4 Qd4 26.Kh1 Kh8 27.Rd2 f3 28.gf3 Rf3 29.Rf3 Rf3–/+) 25...Qd4–/+ 26.Kh1 Rd8 27.Rf2?? Qf2–+ (27...Qf2 28.Bd3 Bg5–+) 0–1. Stenaae – Wall,Bill, Microsoft Gaming Zone, 1999.

6.Be2 0–0

7.0–0 Re8 8.c4 a6 9.a4 d6 10.d4 Nbd7 11.Nbd2 Bf8 12.Qc2 Ra7 13.Rfd1 Qa8 14.a5 ba5 15.Ra5 ab5 16.Ra7 (worse is 16.Rb5 Bc6 17.Rg5 Rb8+=) 16...Qa7 17.cb5 Ba8 18.Ra1 Qb8 19.h3 Rc8 20.Qa4 Nb6 21.Qa7 c6 22.Qb8 Rb8 23.bc6 Bc6 24.Rc1 Bb7 25.Bd3 Nbd5 26.Ba3 g6 (26...Ra8!? 27.Nc4 Nb6 28.Nb6 Ra3=) 27.Rb1+= Nd7 (27...Nc7!?+=) 28.Ne4+/– Bc6 29.Rb8 (29.Bd6?! Rb1 30.Bb1 f5 31.Bf8 fe4 32.Be4 Nf8+=; 29.Nd6?! Ra8 30.Bc5 Nc5 31.dc5 Bd6 32.cd6 Rd8+=) 29...Nb8 30.Bd6 Bd6 31.Nd6 f6 32.Ne4 Kf7 33.Nc5 Nd7 34.Nd7 Bd7 35.Bc4 Bc6 36.Bd5 Bd5 37.Nd2 Ke7 38.e4 Bb7 39.f3 Ba6 40.Kf2 Kd6 41.Ke3 Bb5 42.g3 Ba6 43.h4 Bb5 44.f4 Ba6 45.Nf3 Bb5 46.g4 Ke7 47.g5 Bc6 48.Nd2 Bb5 49.Nb1 Bc4 50.Nc3 White prepares the advance d5 50...Bb3 51.d5 f5 52.ef5 gf5 53.Kd4 ed5 54.Nd5 Kf7 55.Ke5 h6 56.Ne3 (56.Kf5 hg5 57.hg5 Bd5+=) 56...hg5 57.hg5 Kg6 58.Nf5 Bc2 59.Nh4 Kh5 60.Nf3 Kg6 61.Nd4 Bb1 62.Ke6 Ba2 63.Ke7 Bb1 64.Ke6 Ba2 65.Ke5 Bb1 66.Nc6 Bc2 67.Ne7 Kf7 68.Kd6 Bb1 69.Nc6 Kg6 70.Ne5 (better is 70.Ke6 Bf5 71.Kd5+–) 70...Kf5 71.g6 Kf6 72.Kd7 (72.Kd5 Ba2 73.Ke4 Bb1 74.Kd4 Bf5+/–) 72...Bf5+/– 73.Kd6 Bb1 74.Kd5 Bc2 75.Kd4 Bf5 76.Kd5 Bc2 77.Nf3 Bg6 ½–½. Lorenc,Tomas (2150) – Pokorny,Milan (2200), CZE–chT2b, 2006.

7.a4 d5 8.0–0 c5 9.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.a4).

7.0–0 a6

8.a4 ab5 9.ab5 Ra1 10.Ba1 c5 11.c4 d5 12.d4 cd4 13.Nd4 dc4 14.Bc4 Bc5 15.Nd2 Qd7 16.N2b3 Bd6 17.Nf3 Rc8 18.Be2 Nd5 19.Qd4 f6 20.Rd1 Qc7 21.Nfd2 Bh2 22.Kh1 Be5 23.Qc4 Qc4 24.Nc4 Ba1 25.Ra1 Nd7 26.Ra7 Rc7 27.Nd6 Nc5 28.Nc5 bc5 29.Rb7 Rb7 30.Nb7 1–0. Trkn – Ottar, itsyourturn.com, 2000.

8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 c5 12.Nc3 d5 13.d4 Ne4 14.cd5 Nc3 15.Bc3 Qd5 16.Bd3 c4=+ 17.e4 Qh5 18.Bc4+= Rc8 19.Qd3= Nd7 20.d5 Nc5+= 21.Qe2 ed5 22.Bd5 Bd5 23.ed5 Bd6 24.Ne5?? Re8 25.Qh5+– (25.Qh5 g6 26.Qg5+–) 1–0. stoker – distaff, Live Game Caissa's Web, 2005.

8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 (11.Bb2 d5=) 11...d5 12.bc6 (12.d3 dc4 13.dc4 Qc8=) 12...Bc6 (12...Nc6 13.Bf6 Bf6 14.cd5 ed5 15.d4=) 13.d4 (13.Ne5 Bb7=) 13...Nbd7 (13...dc4 14.Bc4 Bd6 15.Ne5=) 14.cd5 Nd5 15.Nbd2 (15.Qb3 Qc7=) 15...N7f6 16.Ne5 ½–½. Rosner,Dirk – Unger, corr ICCF EU–I–GT269, 1989.

8.a4 c5 9.Nc3=.

8.a4 c5 9.c4 d5 10.Qc2 Nbd7 11.d3 Qc7 12.Nbd2 e5 13.cd5 Nd5 14.Nc4 f6 15.Qb3 Kh8 16.Nfd2 a5 17.Bf3 Rad8? (better is 17...Nb4!?+=) 18.Na5!+/– Ne3? (18...ba5 19.Bd5 Combination) 19.Nb7+– (19.fe3?! Bf3 20.Rf3 ba5+/–) 19...Nf1 20.Kf1 Rb8 21.Qd5 g6 (21...f5 22.Re1 Bg5 23.Nc4+–) 22.Nc4 Kg7 23.Qe6 Rfe8 24.Bd5 Bf8 (24...Kh8 25.Qc6 Bd8+–) 25.Qg8 (25.Qf7 Kh6 26.Bc1 Kh5 27.Qh7 Bh6 28.Qh6 Kg4 29.Qh3) 25...Kh6 26.Bc1 g5 27.Be4 (27.Ne3 Qc6 28.Nf5 Kh5 29.h3 Qd5 30.g4) 27...Re7 28.Nbd6 (28.Nbd6 Rg7 29.Nf5 Kh5 30.Ng7 Bg7 31.Qh7 Bh6 32.Bf3 g4 33.Qh6) 1–0. Jovanovic,Momir (2075) – Miskevicer,Boris (2250), Munich–ch MK, 2006.

8.c4 ab5 9.cb5 Bc5 10.d3 d5 11.Nbd2 c6 12.a4 cb5 13.ab5 Nbd7 14.Nb3 Bd6 15.Nbd4 Qc7 16.Qd2 Rfc8 17.Rfc1 Qd8 18.Ra8 Ra8 19.Nc6 Qf8 20.d4 Ne4 21.Qc2 Ra2 22.Qb3 Qa8 23.Nb4 Ra7 24.Na6 h6 25.Ba3+= Ba3 26.Qa3 Ndf6 27.Rc7 Ba6 28.Ra7 Qa7 29.ba6 Ne8 30.Ne5 Nc7?? 31.Qe7+– Nb5 32.Qe8 Kh7 33.Bb5 Nd6 34.Bd3 g6 35.Qd7 Qd7 36.Nd7 Nc8 37.f3 Na7 38.Nb6 Kg7 39.Kf2 Kf8 40.e4 Ke7 41.ed5 ed5 42.Nd5 Kd6 43.Nf6 Kc7 44.d5 Kb6 45.d6 Nc6 46.d7 Nd8 47.Ke3 Ka7 48.Kd4 Kb6 49.Kd5 Ne6 50.Kd6 Nd8 51.Ke7 Nc6 52.Ke8 (52.Ke8 Ka7 53.Bb5+–) 1–0. ranaground – Salvatore, ChessWorld.net, 2009.

7.0–0 c5

8.a4 a5 9.c4 d6 (9...d5 10.d4=) 10.Qc2 Nbd7 11.d3 (11.Nc3 Ne5=) 11...Qc7 12.Nbd2 (12.Nc3 Rad8=) 12...Rad8 13.Rac1 Rfe8 14.Rfd1 d5 (14...e5 15.e4=) 15.d4 (15.cd5 ed5 16.d4 c4=) 15...Bd6 (15...cd4 16.Nd4 Rc8 17.Nc6=) 16.cd5+= ed5 (16...Bd5? 17.e4+–) 17.dc5 bc5 18.h3 (18.Bd3 Ne4+=) 18...Rc8= 19.Bd3 Be7 (19...Qb6 20.Bf5 Rc7 21.Bc3+=) 20.Nh4 (20.Bf5 Rb8+/–) 20...g6 (20...c4 21.Nhf3+=) 21.Nhf3 Qb6 22.Be2 Bf8 23.Nb3 (23.Bc3 c4+=) 23...Ne4 24.Nfd2 (better is 24.Rb1!?+=) 24...c4–/+ 25.Ne4 (25.Bc4 dc4 26.Nc4 Qe6=) 25...cb3 26.Qb3 Rc1 (26...Re4? 27.Rc8 Bc8 28.Qc3+–) 27.Rc1 Re4 28.Bf3 (28.Qc3 f6 29.Qc7 Qc7 30.Rc7 Nc5 31.Bf6 Rb4+=) 28...Rb4 29.Qc3? (better is 29.Qc2!?–/+) 29...d4!–+ 30.ed4 (30.Qd4 Rd4) 30...Bf3 31.gf3 Qf6 32.Ba3 (32.Re1 Qg5 33.Kh1 Qd5–+ (33...Ra4?! 34.d5 f6 35.Qc6–+)) 32...Ra4 (32...Rd4?! 33.Bb2 Ne5 34.Qe3–+) 33.Bf8 (33.Bc5 Qg5 34.Kf1 Qf5–+) 33...Nf8 34.Qc6 (34.Rd1 Qg5 35.Kh2 Ra2–+) 34...Qg5 35.Kf1 Rb4 (35...Rd4 36.b6–+) 36.d5 Rb5! 37.Rd1 (37.Qb5 Deflection from c1 37...Qc1) 37...Rb2 38.d6 (38.Qc3 Rb4 39.Qc7–+) 38...Qh4 (38...Qh4 39.Qc5 Qh3 40.Kg1 Rb4–+) 0–1. Honos,Attila – Bugyinszki,Istvan, HUN tt2, 1998.

8.a4 a5 9.d3 d5 10.Ne5 Nfd7 11.Nf3 Bf6 12.d4 Qc7 (12...cd4 13.ed4 Be7 14.Nbd2=) 13.c4+= dc4 14.Na3 (14.Nbd2 c3 15.Bc3 cd4 16.Bd4 Nc5 17.Bf6 gf6+=) 14...c3= 15.Bc3 cd4 16.Bd4 Bd4 17.ed4 Nf6 18.Rc1 Qe7 19.Nc4 Nbd7 20.Nfe5 Rac8 21.Bf3 Bf3 22.Qf3 Ne5 23.de5 Nd5 24.Nd6 Rc1 25.Rc1 Qg5 26.Re1 Qd2 27.Qd1 Qc3 28.h3 h6 29.Re4 Rd8 30.Qh5 Rd7 31.Kh2 Qd2 32.Qh4 f5 33.Rc4 Qe2 (33...Kh7 34.Qd4 Qd4 35.Rd4=) 34.Rc8 Kh7 35.Qg3 (35.Qd4 f4+=) 35...f4 36.Qf3 Qe5 37.Qd3 g6 38.Nc4 Qf6 39.Qe4 0–1. Bordovsky,Vladimir (2340) – Nester,I (2265), 3rd Maksym Yusupov Mem rapid, 2015.

8.a4 a5 9.d4 d6=.

8.a4 a6 9.Nc3=.

8.Nc3 a6=.

8.c4 a6 9.Nc3=.

8.c4 d6 9.a4 Nbd7 10.h3 Qc7 (10...d5 11.cd5 Nd5 12.Nc3 Bf6 13.Qb1 Nb4 14.Rd1 Ne5 15.Ne5 Be5=; 10...a6 11.Nc3 Re8 (11...d5 12.cd5 Nd5 13.Nd5 ed5 14.Qc2 Re8 15.Rfc1 Nf6=; 11...Ne5 12.Ne5 de5 13.d3 Qd7 14.Qc2 Rfd8 15.ba6 Ra6=; 11...e5 12.d4 cd4 13.ed4 Rc8 14.ba6 Ba6 15.Nb5 e4=) 12.d3 ab5 13.ab5 Ra1 14.Qa1 d5 15.Qd1 Qc7=) 11.d3 (11.Nc3 a6 (11...e5 12.d3 d5 13.cd5 Nd5 14.Qb3 Nc3 15.Bc3 a6=; 11...Rfe8 12.d3 d5 13.a5 a6 14.ab6 Qb6 15.Qc2 ab5=; 11...a5 12.ba6 Ra6 13.Nb5 Qc6 14.Qb3 Rfa8 15.Rfb1 Ne5=) 12.d3 d5 13.ba6 Ra6 14.cd5 Nd5 15.Nb5 Qd8=) 11...Rac8 (11...d5 12.cd5 Nd5 13.Nc3= (13.Na3 a6 14.Qb3 Rfd8 15.ba6 Ba6=) 13...a6 14.Nd5 Bd5 15.Qc2 ab5=) 12.Nbd2 (12.a5 d5= 13.Nbd2 Bd6 14.Qc2 ba5 15.Bc3 Ra8+=) 12...Rfd8 (12...Ra8 13.Qb3 (13.Nb3= a6 14.Qd2 d5 15.Rfb1 dc4+=) 13...a6 14.Rfb1 ab5 15.ab5 d5=) 13.Qc2 (13.a5 d5= 14.Qc2 e5 15.cd5 Nd5+=) 13...Nf8 (13...Ra8 14.a5 (14.Bc3= a6 15.ba6 Ra6+=) 14...ba5 15.Bc3 a6=) 14.a5+= Ng6 15.a6 (15.Qc3 d5+=) 15...Ba8 16.Rfd1 d5 17.Nf1 h6 18.Ng3 Rd7 19.Rac1 Rcd8 20.Qc3 (20.cd5 Nd5 21.Ne4 e5=) 20...Bd6 (20...d4 21.ed4 cd4 22.Qd2+=) 21.Qe1 Be7 (21...d4 22.ed4 Bg3 23.fg3 cd4 24.Qf2=) 22.d4 Qb8 (22...dc4 23.Nd2=) 23.Ne5 Ne5 24.de5 Nh7 25.f4 (25.cd5!? Rd5 26.Rd5 Bd5 27.Bd3+=) 25...Bh4= 26.Kh2 d4 (26...Nf8 27.Bd3=) 27.Bd3 Nf8 28.ed4 cd4 29.Qe2 Ng6 (29...Be7 30.Qg4+=) 30.Bg6 Bg3 (30...fg6 31.Qg4 Bg3 32.Kg3+/–) 31.Kg3 fg6 32.Ba3 d3 33.Qe3 (33.Qg4 Kf7 34.Rd2 Be4+/–) 33...Rd4 34.Bd6 R8d6 35.ed6 Qd6 36.Qe5 Qd8 37.Rc3 (37.c5 d2 38.Rc3 bc5+/–) 37...Kh7 (37...g5 38.Qe6 Kh8 39.c5 gf4 40.Kh2 bc5 41.Rc5+–) 38.c5 (38.Kh2 d2 39.Qe6 Re4=) 38...bc5 39.Qc5 (39.Qe6 Rf4 40.Rc5 Re4–+) 39...g5 40.f5 (40.Kh2 Qf6 41.Qe5 Qf4 42.Qf4 gf4 43.Rcd3 Rb4+/–) 40...d2? (40...Qb8 41.Qc7 Qb5 42.fe6–/+) 41.Re3 (41.fe6 Qb8 42.Kf2 Rd5+–) 41...Rd5 (41...Be4 42.Re2 Rd5 43.Qb4 Qc7 44.Kf2 Qb6 45.Kg3 ef5 46.Red2 Qc7 47.Kf2–/+) 42.Qc2 (42.Qa7 Rb5 43.Kh2 (43.Re6?! Qd5 44.Qf2 Qb3 45.Qe3 Qd1 46.Rh6 gh6 47.Qe7 Kg8 48.Qe8 Kg7 49.Qe7 Kh8 50.Qf8 Kh7 51.Qf7 Kh8 52.Qf8 Kh7 53.Qf7 Kh8 54.Qf8=) 43...Qd6 44.Kg1+/–) 42...Qd6 (42...ef5 43.Kh2+=) 43.Kf2= Rf5 (43...ef5 44.Re8 Qb6 45.Kg3=) 44.Kg1 Qb6 45.Qd2 Rb5 46.Qc2 Rf5 47.Rde1 g6 48.Kh1 Bd5 49.Qc8 Kg7 50.R3e2 (50.Qc3 Kg8 51.Qd3 Qc6=) 50...Rf7 51.Qc3 Kh7 52.Qa3 (52.Ra1 Qc7 53.Qe3 Qf4=) 52...Qd4 53.Qe3 (53.Kh2 g4+=) 53...Qh4 (53...Qe3 54.Re3 Rc7 55.R3e2+=) 54.Kg1= Qc4 (54...Qf4 55.Rf2 Qe3 56.Re3=) 55.Rf2 Rg7 56.Ref1 (56.Qa3 Qd4=) 56...Qa6 ½–½. De Visser,Arno – Landtman, Dieren, 1982.

8.c4 d6 9.Nc3 Nbd7 10.d4 cd4 11.ed4 Rc8 (11...d5 12.cd5 Nd5 13.Nd5 Bd5 14.Qa4=) 12.a4 (12.Qa4!?=) 12...Bf3+= 13.Bf3 Rc4 14.Qd3 (14.Re1 d5=) 14...d5 15.Rfe1 (15.Nd1 Rc8+=) 15...Bb4–/+ 16.Rec1 Qc7 (16...Qe7 17.Rc2+=) 17.Be2 (17.Nd1 Qf4+=) 17...Qf4 18.Qe3 (18.Nd1 Rfc8 19.g3 Qd6–/+) 18...Qe3 19.fe3 Rcc8 (19...Rc7 20.Na2 Rc1 21.Rc1–/+) 20.g3 h5 21.Na2 (better is 21.Bd3!?–/+) 21...Bd2–+ 22.Rc8 Be3 (22...Rc8 23.Bc1 Rc2 24.Bd2 Rd2 25.Nc3–+) 23.Kg2 Rc8 24.Nb4 Nb8 25.Na6?? (better is 25.a5–+) 25...Na6 26.ba6 (26.Kf3 Nb4 27.Ke3 Nc2 28.Kd3 Na1 29.Ba1 Rc1–+) 26...Rc2 27.Kf3 (27.Rb1 Ne4 28.a5 ba5–+) 27...Ng4 28.Ba3 (28.h3 Rb2 29.hg4 Bd4 30.Re1 hg4 31.Kg4–+) 28...Bd4 29.Bd3 (29.Re1 Rc3 30.Kg2 Ra3 31.Rc1–+) 29...Rf2 0–1. Neumann,Frank – Nouveau,Laurent, OP–2012–0–02309, 2012.

8.c4 d6 9.d3 Nbd7 10.a4 a5 11.ba6 Ra6 12.Nc3 Ne8 13.d4 (13.Qb3 A) 13...Ra5 14.Nb5 (14.Rfb1 Qa8 15.Nb5 Bf6 16.Bf6 Ndf6 17.d4 Ne4 18.Rb2=) 14...Bf6 15.d4 d5 16.Bc3 Ra8 17.Rfc1 cd4 18.Bd4=; B) 13...Bf6 14.Nb5 (14.Rfb1 Bc6 15.Nb5 Bb2 16.Qb2 Qa8 17.Qb3 Ne5 18.Ne5=; 14.e4 Bc3 15.Bc3 f5 16.ef5 Rf5 17.d4 cd4 18.Bd4=; 14.Ra2 Nc7 15.Nb5 Bb2 16.Qb2 Nb5 17.ab5 Ra2 18.Qa2=) 14...Bb2 15.Qb2 Qa8 16.Bd1 Ne5 17.Ne5 de5 18.f4=) 13...cd4 (13...Qa8 14.Re1 (14.Qd3 Ra5 15.d5 Bf6 16.e4 Ne5 17.Ne5 Be5 18.Rfb1=; 14.Qb3 cd4 15.ed4 Nef6 16.Rfe1 Rc8 17.Bc1 Ne4 18.Ne4=; 14.Rb1 Bc6 15.d5 Ba4 16.Qd3 Nc7 17.Na4 Ra4 18.Bd1=) 14...cd4 15.ed4 Nef6 16.Qb3 Ra5 17.Ba3 Rc8 18.Bb4=; 13...Nef6 14.d5 Re8 15.e4 Nf8 16.Rb1 Ng6 17.Bd3 Nf4 18.Bc2=; 13...Bf6 14.Nb5 (14.Re1 Nc7 15.Qd3 Qe7 16.Nb5 Rc8 17.Qc2 Kh8 18.Nd2=; 14.Rb1 Nc7 15.Qd3 Re8 16.d5 ed5 17.cd5 Ra5 18.Rfd1=; 14.Qd2 Ra5 15.Rfd1 Qa8 16.Rab1 Qa6 17.Qd3 cd4 18.ed4=; 14.Qd3 Ra5 15.Rfd1 Qa8 16.Rab1 Bc6 17.d5 ed5 18.cd5=) 14...Be4 15.Bd3 Qa8 16.Be4 Qe4 17.Qb3 d5 18.Rfd1+=; 13...Ra5 14.Re1 (14.Rb1 Qa8 15.Re1 Nef6 16.Qd3 cd4 17.ed4 d5 18.Nd2+=) 14...cd4 15.ed4 Nef6 16.Qb3 d5 17.Ne5 Ne5 18.de5=; 13...Nc7 14.Rb1 (14.Nb5 cd4 15.Nfd4 Nc5 16.Bf3 Bf3 17.Nf3 d5 18.Qc2=; 14.Qb3 Bf6 15.Nb5 cd4 16.ed4 Nb5 17.ab5 Ra1 18.Ra1=; 14.Re1 Bf6 15.Qd3 Qe7 16.Nb5 Rc8 17.Qc2 h6 18.Nd2=) 14...cd4 15.ed4 Ra7 16.Bc1 Kh8 17.Bf4 Re8 18.Re1+=) 14.ed4 Ra8 (14...Nef6 15.Qb3 Ra5 16.Rfe1 d5 17.Ne5 Ne5 18.de5=) 15.Nd2 (15.Re1 Nef6 16.Qb3 Qc8 17.Rac1 Rd8 18.Nd2=) 15...Ndf6 (15...Nef6 16.Bf3 d5 17.Ba3 Ba3 18.Ra3=) 16.Bf3 (16.Nb3 Ne4 17.Re1 Nc3 18.Bc3=) 16...d5 17.cd5 (17.Ba3 Ba3 18.Ra3 Rc8=) 17...Nd5+= 18.Nb5 (18.Qb3+=) 18...Nd6 19.Nd6 Bd6 20.Qb3 Qd7 (20...Bf4 21.Ne4+=) 21.Nc4 Rfb8 22.Ne3 (22.Rfb1 Bc6=) 22...Nf4 23.Bb7 Qb7 24.Rfd1 Ra5 25.d5 Nd5 26.Nc4 Qc7 27.Na5 (better is 27.Bd4!?–/+) 27...ba5–+ 28.Qa2 Bh2 29.Kh1 Qf4 30.g3?? (better is 30.Qa3 Qf2 31.Qh3–+) 30...Qf3 (30...Qf3 31.Kh2 Qf2 32.Kh3 Rb2 (32...Qb2?! 33.Qb2 Rb2 34.Rab1 Rb1 35.Rb1=) 33.Qb2 Qb2–+) 0–1. Remling,Christian (2310) – Lputian,Smbat G (2585), Biel MTO op, 1997.

8.c4 d6 9.d4 Nbd7 10.Nbd2 a5 11.a4 Ne4 12.Ne4 Be4 13.Nd2 Bg6 14.Bf3 Ra7 15.g3 (15.Qe2 cd4 16.ed4 Rc7=) 15...Nf6 16.Qb3 h5 (16...cd4 17.Bd4 Nd7 18.Bg2=) 17.Rad1 Rd7 (17...cd4!? 18.Bd4 Nd7=) 18.Bc6+/– Rc7 19.dc5 dc5 20.Nf3 Qc8 21.Ne5 Be4 22.f3 Bf5 (22...Bc6 23.Nc6 Qe8 24.Ne7 Qe7 25.Be5+/–) 23.Kg2 Rd8 24.e4 Bh7 25.h4 (25.Rd8 Qd8 26.Rd1 Qf8+/–) 25...Bf8 26.Qe3 Re7 (26...Be7 27.Qc3+/–) 27.Rd2 (27.Qg5 Rd1 28.Rd1 Rc7+–) 27...Rd2+/– 28.Qd2 Rc7 29.Rd1 Rc6? (better is 29...Be7+/–) 30.Nc6+– (30.Nc6 Ne4 31.Qd8 (31.fe4?! Be4 32.Kg1 Bc6 33.bc6 Qc6+–) 31...Qd8 32.Rd8+– (worse is 32.Nd8 Nd6+=)) 1–0. Krivoshapko,Alexander (2100) – Ermoshenko,Vitaly (1955), SF OCCC, 2007.

8.c4 Ne8 9.Nc3 Bf6 (9...a6 10.d4+=) 10.Qc2 (10.d4 cd4 11.Nd4 a6+=) 10...Nc7 (10...Nd6 11.Qd3 Qe7 12.Rab1+=) 11.e4 (11.d4 cd4 12.Nd4 d5+=) 11...d6 12.a4 Nd7 13.a5 Rb8 (13...a6 14.ab6 Nb6 15.Rfe1=) 14.a6 Ba8 15.Rad1 Ne5 16.Ne1 Ng6 17.d3 (17.Nd3 d5 18.cd5 ed5 19.ed5 Nd5=) 17...Nf4 (17...d5 18.ed5 ed5 19.Bf3=) 18.Bc1 (18.Nf3 Qe7+=) 18...Be5 (18...Bg5 19.Nf3+=) 19.Bf3 (19.Nf3 Ne2 20.Ne2 Bf6+=) 19...Qf6 20.Ne2 Ne2 21.Be2 d5 22.Nf3 Bf4 23.Bb2 (23.Bf4 Qf4 24.ed5 ed5=) 23...Qg6 (23...d4 24.Bc1=) 24.g3 (24.Ne5 Qg5 25.Nd7 Qh4+–) 24...d4 25.Nh4 Qf6 26.Ng2 Bh6 (26...Bd6 27.f4 Qg6 28.f5=) 27.f4 Qe7 28.g4 g6 (28...f6 29.Rde1=) 29.g5 (29.Rde1 Bg7+=) 29...Bg7= 30.e5 h6 31.h4 (31.gh6 Bh6 32.Bc1 Kh7=) 31...hg5 (31...Kh7 32.Bc1+=) 32.hg5= Be5 (32...Rbd8 33.Bf3=) 33.fe5+= Qg5 (33...Bg2 34.Kg2 Qg5 35.Kf3 Qe3 36.Kg4 Qe5 37.Bc1+=) 34.Bf3 (better is 34.Rf2 Qe5 35.Bc1+/–) 34...Kg7? (better is 34...Qe5 35.Bc1 Bf3 36.Rf3 Qh5+/–) 35.Bc1+– Qg3 36.Bf4 Qh3 37.Ba8 Ra8 38.Qf2 (38.Bg5 Qg3 39.Bf6 Kh7+–) 38...Rae8 (38...Rh8 39.Qf3+–) 39.Qg3 (39.Bg5!? Kg8+–) 39...Rh8 40.Kf2 (better is 40.Qh3 Rh3 41.Bg5+–) 40...Qf5? (better is 40...Qg3 41.Kg3 Rh5+–) 41.Nh4 Qh5 42.Bg5 Rh7 (42...Kg8 43.Ke1+–) 43.Bf6 (43.Ke1 Kg8+–) 43...Kg8 44.Rh1 Rc8 (44...Rf8 45.Ke1+–) 45.Nf3 (45.Ng6 Qg6 46.Qg6 fg6 47.Rh7 Kh7 48.Rh1 Kg8 49.Rh8 Kf7 50.Rc8 Na6 51.ba6+–) 45...Qh1 46.Rh1 Rh1 47.Nh2 (47.Nd4 cd4 48.Qg2 Rh5+–) 47...Ne8 48.Qh4 Threatening mate: Qh8 48...Ng7 49.Qh6 Rh2 50.Qh2 Nh5 51.Qg2 (51.Qg2 Nf6 52.ef6+–) 1–0. Kleiser,Gregor (2165) – Laske,Erich (2145), Liechtenstein op, 1995.

8.bc6 Nc6 9.Na3 Rc8=.

8.bc6 Nc6 9.d4 h6 10.c4= Rc8 11.Nbd2 1–0. gtate (1930) – kostaspetidis (2100), net–chess.com, 2005.

8.d3 a6 9.Na3 d5 10.c4 ab5 11.Nb5 Nc6 12.Qb3 Na7 13.Na7=.

8.d3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1+=.

8.d3 a6 9.a4 d5 10.Na3 Nbd7 11.ba6 Ra6 12.Nb5 Bc6 13.Qd2=.

8.d3 a6 9.a4 d6 10.c4 (10.Na3 ab5 11.Nb5 Nc6=) 10...e5 (10...ab5 11.ab5 Ra1 12.Ba1=) 11.e4 (11.Nc3 Nbd7+=) 11...a5 (11...ab5 12.ab5 Ra1 13.Ba1=) 12.Nc3+= Nbd7 13.Ne1 (13.Qc2 h6+=) 13...Ne8 (13...Re8 14.g3=) 14.Nd5 (14.Nc2+=) 14...f5 (14...Nc7!?+=) 15.ef5+/– Bd5 16.cd5 Rf5 (16...Nc7 17.Nc2 Rf5 18.Ne3+/–) 17.Nc2 (17.Bg4 Rf8+/–) 17...Rf8 (17...Nc7 18.Ne3 Rf8 19.Qb3+/–) 18.Ne3 (18.Bg4 Nc7 19.Be6 Kh8+=) 18...Ndf6 (18...Nc7 19.Bf3+/–) 19.f4 (19.Bc3 Nc7+/–) 19...ef4 (19...Nd7 20.fe5 Bg5 21.Rf8 Kf8 22.Qf1 Nef6 23.Nc4 Ne5 24.Be5 (24.Ne5?! de5 25.Be5 Ra7+/–) 24...de5 25.d6+–) 20.Rf4 Nc7 21.Qb3 Kh8 (21...Nd7!? 22.Rf8 Bf8 23.Nc4+/–) 22.Raf1 Ng8 (22...Nd7 23.Rf8 Bf8 24.Bf3+–) 23.Rf8 Bf8 24.Nf5 (24.d4 Nf6+–) 24...Nf6 25.Bf3 (25.Qc4 Qe8 26.Bf3 Qf7+–) 25...Nce8 (25...g6 26.Ne3 Bg7 27.Bc3+/–) 26.Re1 (26.Ne3 g6+–) 26...g6 27.Ng3 (27.Ne3 Bg7+–) 27...Bg7+/– 28.Ne4 (28.h3!?+/–) 28...Ne4+= 29.Re4 (29.de4 Qg5+=) 29...Ra7 (29...Bb2 30.Qb2 Ng7 31.h4+=) 30.Bg7 (30.d4 Re7 31.Qd3 Re4 32.Qe4 Kg8+=) 30...Ng7 31.Qb2 (31.d4 cd4 32.Rd4 Nf5=) 31...Kg8 32.Qe2 (32.Bg4 Qg5=) 32...Kf8 (32...Qg5 33.Bg4=) 33.Bg4 Re7 34.Be6 (34.Rf4 Rf7 35.Qf2 Qe7=) 34...Ne6 35.de6 (worse is 35.Re6 Re6 36.Qe6 Qe7 37.Qc8 Kg7=) 35...Kg8 36.Qf2 (36.Rf4 Qc8 37.Rf6 Kg7=) 36...Qf8 (36...d5 37.Re3 Qd6 38.Qf6=) 37.Qg3 (37.Qh4 d5 38.Re3 Re8+=) 37...Re8= 38.h4 (38.Re3 Qf6 39.Qd6 Qa1 40.Kf2 Qf6 41.Rf3 Qh4 42.Kf1 Qa4 43.Qb6 Qa1 44.Kf2 Qd4 45.Kg3 Qe5 46.Kf2 Qd4 47.Ke2 Qb2 48.Kd1 Qb1 (48...Qg2 49.Qb7 Qg1 50.Kc2 Qh2 51.Kb1+–) 49.Kd2 Qb2 50.Ke1 Qe5 51.Kf2 Qd4=) 38...Qe7 (38...d5 39.Re3=) 39.h5 g5 (better is 39...d5!? 40.Re3 Qf6+=) 40.h6+/– Rf8 (40...Rc8 41.Qf3+–) 41.Qg4 (41.d4 cd4 42.Rd4 Qe6 43.Qg5 Qg6 44.Qd5 Qf7 45.Qd6 Qf6 46.Qg3 Kh8+–) 41...Kh8 (better is 41...Qf6+/–) 42.Qg3 Rg8 (42...Kg8!?=) 43.Qe3 (43.d4 Rc8+–) 43...Rg6? (43...Re8 44.Qe1 Qf6 45.Qg3+/–) 44.d4+/– d5? (better is 44...Rh6!? 45.dc5 dc5 46.Qc3 Kg8+–) 45.Re5+– Rh6?? (45...c4 46.Qf3 Rh6 (46...Re6?? 47.Re6 Qe6 48.Qf8 Qg8 49.Qf6 Qg7 50.Qg7) 47.Qd5 c3+–) 46.dc5 bc5 (worse is 46...Qc5 47.Qc5 bc5 48.e7 Kg7 49.e8Q Rf6 50.Rg5 Rg6 51.Rf5 Kh6 52.Qe3 Kg7 53.Qe5 Kg8 54.Qe8 Kg7 55.Qf8) 47.b6 d4 (47...Rg6 48.b7 Rg8 49.Rg5 Rg5 50.b8Q Kg7 51.Qc8+–) 48.Qe1 (48.Qg3 Rg6 49.b7+–) 48...Rf6 (48...Rg6+–) 49.b7 Rf8 (49...Qb7 50.e7 g4 51.e8Q Kg7 52.Rg5 Rg6 53.Q1e5 Kh6 54.Rh5) 50.Rf5!! (50.Rf5 Rf5 51.b8Q Kg7 52.Qe4+–) 1–0. Tagirov,Kajum K (1915) – Beknhintaev,Aydar (2210), Ufa Cup, 2007.

8.d3 a6 9.Nc3 ab5 10.Nb5 Nc6=.

8.d3 d5 9.c4 (9.Na3 a6 10.c4 ab5 11.Nb5 Na6 12.Ne5 Nc7 13.a4=; 9.Nbd2 a6 10.ba6 Ra6 11.d4 c4 12.Qb1 Qc7 13.Rd1–/+) 9...a6 10.Na3 Nbd7 11.ba6 Ra6 12.Nb5 Qb8 13.cd5=.

8.d3 d6 9.Nbd2 (9.c4 a6 10.Na3 Nbd7 11.ba6 Ra6 12.Nb5 d5 13.Qb3=; 9.Na3 a6 10.ba6 Na6 11.c4 Nc7 12.Qb3 Qd7 13.e4=) 9...Nbd7 (9...a6 10.ba6 Na6 11.c4 d5 12.Qb3 Nb4 13.Bc3=) 10.a4 (10.c4 a6 11.ba6 Ra6 12.Qb3 d5 13.d4=) 10...a6 11.c4 (11.e4 Qc7 12.c4 d5 13.ba6=) 11...d5 12.Qc2 (12.cd5 ed5 13.Qb3=) 12...Bd6 13.d4 (13.cd5 ed5 (13...Bd5? 14.e4+–) 14.d4 c4=; 13.ba6=) 13...ab5 (13...cd4 14.Nd4 Qc7 15.f4=) 14.ab5= Ra1 15.Ra1 cd4 16.ed4 (16.Nd4 Qc7=) 16...Qc7+= 17.Qd3 Ne4 18.h3 Rc8 19.cd5 Nd2 20.Nd2 Bd5 21.Ne4? (better is 21.Rc1 Qd8 22.Rc8 Qc8 23.Ne4=) 21...Be4–+ 22.Qe4 Qc2 23.Qb7 (23.Bd3 Qb2 24.Qh7 Kf8 25.Qh8 Ke7 26.Qh4 Ke8 27.Rd1–+) 23...Rd8 24.Qd7 (24.Ra8 Ra8 25.Qa8 Bf8–+) 24...Rd7 25.Ra8 Bf8 26.Ba3 h6 27.Rf8 Kh7 28.Bf3 Qc3 29.Be4 (29.Ra8 Qe1 30.Kh2 Qf2–+) 29...g6 0–1. Buescu,Neculai (2240) – Bogdan,Dan (2350), ROM–ch sf Tusnad, 2000.

8.d4 a6=.

8.d4 d5 9.c4 Nbd7 (--> 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).

8.Ne5 d6 9.Bf3 d5 10.c4 Nbd7 11.d4 (11.Nc6 Bc6 12.bc6 Nb8 13.cd5 ed5 14.Bf6 Bf6=) 11...Qc7 12.Nd7 Qd7 13.dc5 bc5 14.Qc2 dc4 15.Bb7 Qb7 16.Qc4 Ne4 (16...a6 17.a4=) 17.a4 (17.Rd1 Bh4 18.f3 Nf2+–) 17...Rfd8 18.f3 Nf6 19.e4 a6 20.Na3 Nd7 21.Rfd1 Rdb8 22.Qd3 (better is 22.Rab1+=) 22...ab5 (better is 22...Rd8!?=) 23.Qd7+/– Ra4 24.Nb5 Ra1 (24...Qb5 25.Ra4) 25.Ba1 Kf8?? (25...Qd7 26.Rd7 Rb5 27.Re7 f6+–) 26.Qb7 (26.Nc3 Qd7 27.Rd7 Ke8+–) 26...Rb7 27.Nc3 (27.Na3 Rb4+–) 27...Bf6 28.Ne2 Ba1 29.Ra1 Ke7 30.Rd1 (30.Kf2 e5+–) 30...Kf6 31.Kf2 Rb3 32.Rc1 Rb5 33.Nc3 Rb4 34.Nd1 Rb5 35.f4 g5 36.g3 gf4 37.gf4 Ke7 38.Ne3 f6 39.Kf3 Kf7 (39...h5 40.e5+–) 40.Rc2 (40.Ra1 Rb3+–) 40...Ke7 (40...h6 41.Nc4 Rb3 42.Ke2+–) 1–0. Mroz,Antoni – Jasak,Janusz, corr Poland, 1991.

8.a4 d5

9.Na3=.

9.a5 ba5 10.Bc3 a6+=.

9.a5 a6 10.Nc3 ba5–/+.

9.d3 Nbd7

10.a5 a6 11.ba6 Ra6 12.ab6 Ra1 13.Ba1 Qb6+=.

10.Nbd2 a6 11.ba6 Ra6 12.Ne5=.

10.Nbd2 Qc7 11.a5 ba5 12.Bc3 a6 13.Ba5 Qd6=.

10.Nbd2 Qc7 11.c4 a5 12.Rc1 Bd6 13.cd5 ed5 14.h3 (14.Nb3 Rae8=) 14...Rfe8 15.Nh4 (15.Re1 Ne5=) 15...g6 (15...Bh2!? 16.Kh1 Bd6=) 16.Nhf3= Rac8 17.Re1 Qb8 (17...Ne5 18.Qc2=) 18.Bf1 (18.Qc2 Ne5=) 18...Re6 (18...Ne5 19.Be2=) 19.g3 (19.Qc2 Ne5=) 19...Rce8 (19...Ne5 20.Ne5 Be5 21.d4+=) 20.Be2 (20.Ng5!? R6e7 21.Bg2=) 20...d4 (20...d4 21.ed4 Bd5+=; 20...Bg3 21.fg3 Qg3 22.Kh1 Qh3 23.Nh2 Re3–+) 0–1. Woelfelschneider,Peter – Nemec,Zdenek, TT–12 ETC, 2004.

10.Nbd2 Qc7 11.c4 a6 12.ba6 Ra6 13.d4+=.

10.Nbd2 Qc7 11.c4 a6 12.Qc2 a5 (12...e5 13.cd5 Bd5 14.a5 ab5 15.ab6 Qb6 16.e4+=) 13.Rac1 (13.cd5 Bd5 14.e4 Bb7=) 13...Rac8 (13...e5 14.cd5 Nd5 15.Nc4=) 14.cd5+= ed5 15.Nh4 (15.Rfd1 Bd6=) 15...Rfe8 (15...Bd6 16.Nhf3=) 16.Nf5 Bf8 (16...Ne5 17.Bd4+=) 17.Rfe1 Qb8 (17...Bd6 18.Nd6 Qd6 19.Bc3=) 18.Rb1 (18.Nf3 Bd6+=) 18...g6 19.Ng3 Bh6 (19...Bg7 20.Rbc1=) 20.Nf3 Ng4 (20...d4 21.e4=) 21.Qc3+= The mate threat is Qh8 21...Ndf6 22.Bd1 (22.h3 d4 23.ed4 Nd5+=) 22...Re6 (22...Bg7 23.Be2=) 23.Re2 (23.Nd2 d4 24.Qc4 Bd5–+) 23...Rce8 (23...d4 24.ed4 cd4 25.Qe1 (25.Qd4? Rd6–+) 25...Bf3 26.Re6 Bd1 27.Rf6 Ba4 28.Re6+=) 24.Qe1 (better is 24.d4 c4 25.Rc2+=) 24...Nf2?? (24...d4 25.h3 Bf3 26.gf3 Ne5–+) 25.Qf2+/– (25.Kf2?! Be3 26.Kf1 d4=; 25.Rf2 Be3 26.Be2 Ng4–+ (26...Bf2 27.Qf2 Qf4 28.Bf6 Qf6 29.d4+=)) 25...Ng4 26.Qf1 (26.Qe1 Be3 27.Kh1 Bf2+=) 26...Ne3 27.Qe1 (27.Qf2 d4+=) 27...d4 28.Nf1 (28.Bb3 Bf3 29.gf3 R6e7+=) 28...Bf3 (28...Bd5 29.Ne3 Be3 30.Kh1=) 29.gf3 Nf1 30.Qf1 Re2 31.Be2 Qe5 32.Bd1 Bf4 (32...Bf4 33.Kg2 Bh2+=). Zmolil,Josef – Nemec,Zdenek, TT–12 ETC, 2004.

7.0–0 c6

8.c4 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.cb5 d5 (12...d6 A) 13.Qc2 A1) 13...Nbd7 14.Bb2 Qb8 15.Nd4 Ne5 16.f4 Rc8 17.Qa4=; A2) 13...Qc8 14.Rc1 Qc2 15.Rc2 Nd5 16.Kf1 Nd7 17.e4=; A3) 13...Qd7 14.Bd4 (14.Nc3 Rc8 15.Qa4 e5 16.d4 e4 17.Nd2=) 14...Rc8 15.Nc3 Qc7 16.Bf6 Bf6 17.Rc1=; A4) 13...e5 14.Nc3 (14.d4 e4 15.Nfd2 Nbd7 16.Bb2 Qb8 17.Nc3=) 14...Qd7 15.d4 e4 16.Nd2 d5 17.Bb2=; B) 13.Nc3 B1) 13...Qd7 14.Qb3 (14.d4 Rc8 15.Qd3 Bf3 16.Bf3 d5 17.Bb2=) 14...Rc8 15.Bb2 Ne4 16.Ra1 Nc3 17.dc3=; B2) 13...Qc7 14.Qa4 (14.Qb1 Rc8 15.Rc1 Nbd7 16.Bb2 Qd8 17.d4=) 14...Rc8 15.Rc1 Nbd7 16.Qd1 Qc5 17.d4=) 13.Qc2 (13.Qa4 Nbd7 14.Rc1 (14.Bb2 Qa8 15.Qf4 Ne4 16.Rc1 Rc8 17.Rc8=) 14...Qb8 15.Qd4 Rc8 16.Rc8 Qc8 17.Nc3=; 13.Bf6 Bf6 14.d4 Qc7 15.Qd3 Rc8 16.Nbd2 Nd7 17.Nb3=) 13...Nbd7 14.Rc1 (14.Nc3 Bd6 15.Rc1 Qe7 16.Nd4 Rc8 17.f4=; 14.Bb2 Bd6 15.Ba3 Qe7 16.Bd6 Qd6 17.d4=; 14.Ne5 Qa8 15.Nd7 Nd7 16.Qc7 Qb8 17.Qd7+=) 14...Nc5 (14...Bd6 15.Bb2 (15.Nc3= Qe7 16.Nd4 Rc8 17.f4=) 15...e5 16.d4 e4 17.Ne5=) 15.Nc3 (15.Ne5 Bd6+= 16.Nc6 Bc6 17.bc6+=; 15.Bf6 Bf6 16.d4 Ne4 17.Nbd2=) 15...Qd6= 16.d4 (16.Bb2 Ra8 17.d4=) 16...Ncd7 (16...Nce4 17.Ne5=) 17.Qd1 (17.Bb2=) 17...Rc8 18.Bb2 h6 (18...Qb4 19.Qd2=) 19.Ba1 (19.Ra1 Qc7=) 19...Qb4 20.Bd3 Qd6 21.Bc2 (21.Rc2 Ra8=) 21...e5 (21...Ne4!? 22.Be4 de4=) 22.de5+= Ne5 23.Ne5 Qe5 24.Ne2 Qd6 (24...d4 25.Nd4 (25.Qd4?! Qb5 26.Qd3 Qd3 27.Bd3 Rc1 28.Nc1 Ne4=) 25...Ba3 26.Rb1+/–) 25.Nd4 Rc5 (25...g6!?+=) 26.Nf5+/– Qe6 27.Bd4 Rc7 (27...Rb5 28.Ng7! Kg7 29.Qd3+–) 28.Nh6! gh6 29.Bh7! Kh7?? (29...Nh7 30.Rc7; 29...Kh7 30.Rc7) 30.Rc7+– Bc8 (30...Ba8 31.Ra7+–) 31.Qc2 Kg8 32.Rc8 Kg7 (32...Bf8 33.Rc6 Bd6 34.Rb6+–) 33.Rc6 Bd6 34.Qb2 Qe7 (34...Kg8 35.Bf6 Qd7 36.Qd4+–) 35.Bf6 (35.Bf6 Qf6 36.Qf6 Kf6 37.Rd6 Ke7 38.Rb6+–) 1–0. Bonetti,Shane – guest1245, ICC, 2002.

8.c4 a6 9.a4 ab5 10.ab5 cb5 11.Ra8 Ba8 12.cb5 d5 13.d3 Nbd7 14.d4 Ne4 15.Nbd2 Nd2 16.Nd2 Nf6 17.Nf3 Qd7 18.Ne5 Qc7 19.Qb3 Ne4 20.Rc1 Qb7 21.Nc6 Bf6 22.Ba3 Rc8 23.Qb2 Qd7 24.Ne7 Be7 25.Be7?? Rc1–+ 26.Qc1 Qe7 27.Qc8 Qf8 28.Qc7 h6 29.Qb6?! Nc3 30.Bf3? Qe8 31.Qc5 Nb5 32.Be2 Bc6 33.h3 Nc7 34.g4 Na6 35.Qb6?? Nb8–+ 36.Qa7 Qc8 37.Kg2 Nd7 38.Ba6 Qd8 39.Bd3 Nf6 (40.Qc5 Bb7–+) 0–1. stoker – Simson5, Live Game Caissa's Web, 2004.

8.c4 d5 9.a4 Nbd7 10.Na3 Re8 11.d3 c5 12.Qc2 Bd6 13.d4 e5 14.de5= Ne5 15.Ne5 Be5 16.Be5 Re5 17.Bf3 Ne4 18.Rad1 f5 19.cd5 Bd5 20.Nc4+/– Re7 21.Qd3 Rd7= 22.Ne5 Rd6 23.Nc4 Rd7 24.Ne5 ½–½. algernon (2110) – vaingrecsky (2100), net–chess.com, 2005.

7.0–0 d5

8.a4 a6 9.a5 ba5 10.Ra5 c6 11.bc6 Qa5 12.cb7 Ra7–/+.

8.a4 a6 9.d3 c5 10.Be5=.

8.a4 a6 9.d3 c6 10.Nc3 cb5 11.ab5 Qc7=.

8.a4 a6 9.d3 c6 10.c4 dc4+= 11.dc4 cb5 (11...Nbd7 12.bc6 Bc6 13.a5=) 12.cb5 ab5 13.ab5 Ra1 14.Qd8 (14.Ba1 Bd5=) 14...Rd8+= 15.Ba1 Nbd7 (15...Ne4 16.Bd4 Nd7 17.Rd1=) 16.Nc3 (16.Rd1 Bd5=) ½–½. Nemec,Zdenek (2040) – Schulz,Hans_Juergen (1955), TT–14 ETC, 2004.

8.a4 a6 9.d3 c6 10.Nbd2 cb5 11.ab5 a5 12.c4 Nbd7 13.Qa4 Bb4 14.Rfd1 Qe7 15.d4 Rac8 16.Rdc1 dc4 17.Nc4 Ne4 18.Ba3 Bd5 19.Bd3 Ba3 20.Qa3 Qa3 21.Na3 f6 22.Be4+= Be4 23.Nd2 Bd3 24.Rc6 Rc6 25.bc6 Nb8 26.c7 Na6 27.Nac4 Bc4 28.Nc4 Nc7 29.Nb6 Rb8 30.Nd7 Rb5 31.Kf1 e5 32.Nc5 Kf7 33.Ne4 Ke6 34.Ke2 ed4 35.ed4 f5 36.Nc5 Kd5 37.Kd3 Kc6 38.h3 Rb2 39.g4 Rf2 40.Ra5 fg4 41.hg4 Rg2 42.Ne4 Rg4 43.Rc5 Kd7 44.Rh5 h6 45.Ke3 Rg1 46.Nd2 Re1 47.Kf2 Rd1 48.Ke2 Ra1 49.Nb3 Ra2 50.Kd3 Ne6 51.Ke4 Re2 52.Kf3 Kd6 53.Ke2 Nf4 54.Kf3 Nh5 55.Na1 Nf6–+ 56.Nc2 g5 57.Ne3 Ke6 58.Kg3 h5 59.Kf3 Nd5 60.Nf1 Kf6 61.Ke4 Nc3 62.Kd3 Nb5 63.Kc4 Nd6 64.Kd5 g4 65.Nh2 Kf5 66.Kd6 Kf4 67.Nf1 h4 68.d5 g3 (68...g3 69.Ng3 hg3–+ (69...Kg3?! 70.Kc5=)) 0–1. Pierred (2220) – Nitrox32 (2495), Rated game, 5m + 0s, 2005.

8.a4 c5 9.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.a4).

8.a4 c5 9.d3 a6 10.c4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 Qc7 14.Qc2 Ra8 15.Bc3 Ne8 16.Ra1 Ra1 17.Ba1 Nd6 18.Ne5 Bf6 19.Nd7 Ba1 20.Qc1 dc4 21.dc4 (worse is 21.Qa1 cd3 (21...Qd7?! 22.dc4 g6 23.Qa7=) 22.Nf6 gf6 23.Bd3 Qd8–/+) 21...Qd7 22.Qa1 h6 23.Qc3 Qe7 24.Qe5 Qc7 25.Qb2 g6 26.h3 Qe7 27.Qa1 Qg5 28.g3 h5 29.h4 Qd8 30.Qe5 Qe7 31.Bd3 f6 32.Qa1 Kg7 33.Qa7 Nc8 34.Qb8 Nd6 35.Nb1 Qd7 36.Nc3 f5 37.Be2 Kh7 38.Bf1 Kg7 39.Qa7 (better is 39.Kh2!?+/–) 39...Nc8= 40.Qa1 Kh6 41.Ne2 Qg7 42.Qa2 Nd6 43.Nf4 e5 44.Nh3 e4 45.Nf4 Nc8 46.Qd2 Qf6 47.Be2 Nd6 48.Kg2 Kh7 49.Qa2 Nc8 50.Qa4 1–0. pcmvr (2830) – acidtest, net–chess.com, 2015.

8.a4 c5 9.Ne5 Nbd7 10.f4 Ne5 11.fe5 Nd7 12.Bg4 (12.a5 a6=) 12...Qc7 13.d4 Bg5 14.Qe2 (14.Qd3 a6=) 14...a5 Black plans c4 (14...a6 15.Na3+=) 15.Na3= c4 16.Nb1 Rae8 (16...Be7 17.Ba3 Bb4 18.c3 Ba3 19.Na3+=) 17.Bh5 (17.Ba3 Be7=) 17...g6 (17...Be7 18.Ba3=) 18.Bg4 (18.Bf3 Be7=) 18...f5 19.Bf3 Rf7 20.Nc3 Rg7 21.Qe1 h5 (21...Bh6 22.Ba3+=) 22.Bc1 (22.Ba3 Qd8+/–) 22...Nf8 (22...Bh6 23.Qg3+=) 23.Ne2 Qf7 (23...Rf7 24.Nf4+/–) 24.h4 (24.Nf4 h4+/–) 24...Be7 25.Nf4 (25.Nf4 Bb4 26.c3+/–) 1–0. Nemec,Zdenek – Cottle,Nigel (2030), corr EU/EM/O/001, 2002.

8.a4 c6 9.c4 cb5 10.ab5 a6 11.cd5 (11.d3 dc4 12.dc4 Bc5=) 11...Nd5 12.Nc3 Nc3 (12...Qd6 13.Ba3 Nb4 14.Na2+=) 13.Bc3 Bf6 (13...Qd5 14.ba6 Ba6 15.Ne5 Be2 16.Qe2=) 14.d4+= ab5 15.Ra8 Ba8 16.Qb1 (16.Bb4 Be7 17.Qb1 Bb4 18.Qb4 Bf3 19.Bf3 Qd7+=) 16...Bc6= 17.Bb5 (17.Bd3 h6=) 17...Bb5 (17...Bf3 18.gf3 Qd5 19.Bd3 Qg5 20.Kh1=) 18.Qb5+= Nd7 (18...Qc7 19.Bd2+=) 19.Bb4 (19.Rc1 Re8+=) 19...Be7 20.Be7 (20.Ra1 Bb4 21.Qb4 Qc7=) 20...Qe7 21.Ra1 (better is 21.Rc1 Ra8 22.Nd2+=) 21...Rb8?? (better is 21...Rc8+=) 22.Ra7+– Rd8 (22...Rc8 23.g3 f6 24.Rd7+–) 23.Ne5 Qg5 (23...Rc8 24.g3+– (24.Nd7 Rc1 25.Qf1 Rf1 26.Kf1 h5–/+)) 24.Rd7 Rd7 (24...Ra8 25.h3 Qf6 26.Rf7+–) 25.Qd7 g6 (25...h6 26.Qf7 Kh7 27.Qe6 Qd8+–) 26.Qf7 Kh8 27.Qf8 1–0. DEFFM – GuestVFZC, freechess.org, 2018.

8.c4 (--> 6.c4 0–0 7.Be2 d5 8.0–0).

8.c4 c5 (--> 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).

8.c4 Nbd7 9.d4 c5 10.Nbd2 (--> 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).

8.d4 c5 9.bc6 Nc6 10.Nbd2 Rc8 11.c4 Na5 12.Rc1 (12.cd5 Nd5 13.Rc1 Qd6=) 12...Ba6 13.cd5 Be2 (13...Rc1 14.Bc1 Be2 15.Qe2 Qd5 16.a3=) 14.Qe2 ed5 (14...Qd5 15.a4=) 15.Qd3 (15.Qa6 Qd7=) 15...Re8 (15...Qd7 16.Ba3=) 16.Ba3 Ba3 17.Qa3 Nc4 (17...Ne4 18.Rc8 Qc8 19.Rc1+=) 18.Nc4+= dc4 19.Qa7 c3 20.Rc2 Ne4 21.Rb1 Re6 22.Ne5 Rc7 (22...Rc7 23.Qa6 f6+/–). Krivoshapko,Alexander – Usatchev,Sergei, Final Omsk, 2010.

8.Ne5 Ne8 9.c4 (9.a4 a6 (9...Nd6 10.Bd3 a6 11.Qh5 f5 12.f4 Nd7 13.Qe2=) 10.Nc3 (10.Na3 Nd6 11.Bd3 c5 12.Qg4 Bf6 13.Qh3=) 10...Nd6 11.Bd3 Nd7 12.Nd7 Qd7 13.Qe2=; 9.Nc3 c5 (9...Nd6 10.Bd3 a6 11.Qh5 f5 12.a4 Nd7 13.Ne2=; 9...a6 10.a4 Nd6 11.Bd3 Nd7 12.Nd7 Qd7 13.Qe2=) 10.d4 Qc7 11.Nf3 Nd7 12.a4 Nd6 13.Re1=) 9...c5 (9...dc4 10.Bc4 (10.Qc2 a6 11.ba6 Na6 12.Bc4 Bd6 13.d4+=) 10...a6 11.a4= ab5 12.ab5 Ra1 13.Ba1=) 10.cd5 ed5 (10...Qd5?? 11.Bf3 f6 12.Bd5 Bd5 13.Ng4+–) 11.d4 Nd7 (11...f6 12.Nf3 c4 13.Nc3=) 12.dc5 (12.Nc6 Bc6 13.bc6=) 12...bc5 (12...Ne5 13.Be5=) 13.Bf3 (13.Nd7 Qd7 14.Qc2 Nf6=; 13.Nc6=) 13...Bf6 14.Nc6? (better is 14.Nd7!? Bb2 15.Nc5 (worse is 15.Nf8 Ba1 16.Nh7 Be5–/+) 15...Ba1 16.Nb7=) 14...Bc6–/+ 15.Bf6 Qf6 (15...Nef6?! 16.bc6 Nb6 17.Nc3+=) 16.bc6 Nb6 (16...Qa1!? 17.Qc2 Qe5 18.cd7 Nf6 19.Qc5 Rfd8–+) 17.Nd2–/+ Qc6 18.Nc4 (18.Rc1 Rc8–/+) 18...Nc7 (18...Nf6 19.Na5 Qa4 20.Qa4 Na4 21.Rfc1–/+) 19.Rc1 Nc4 (19...Qe6 20.Nd2 c4 21.a4–/+) 20.Rc4 Rfd8 21.Qc2 Ne6 22.Rd1 Rac8 23.g3 Rd6 24.Qa4 Qa4 (24...Qb7 25.Rc2–/+) 25.Ra4 c4 (better is 25...d4–/+) 26.Be2? (better is 26.Ra7!? c3 27.Rc1+=) 26...c3–+ 27.Rc1 d4 28.Rc4 (28.ed4 Nd4 29.Kf1 Rc7–+) 28...Rc4 29.Bc4 d3 30.Rc3 d2 31.Be2 d1Q 32.Bd1 Rd1 33.Kg2 Kf8 34.a4 Ra1 35.Rc4 Ke7 36.Rb4 a5 37.Rb7 (37.Rc4 Kd6–+) 37...Kf6 38.Ra7 Ra4 39.h4 (39.f4 g5–+) 39...Ra1 (39...Ra2 40.Ra6–+) 40.f4 (40.g4 a4–+) 40...g6 (40...h5 41.Ra6–+) 41.g4 a4 42.Kf3 (42.Ra6 a3–+) 42...a3 43.g5 Kg7 44.Ke4 a2 45.Ra3 Nf4! 0–1. Hirt,Robert – Piersig,Klaus, corr DDR–ch M778, 1985.

8.d3 a6

9.a4 ab5 10.ab5 Ra1 11.Ba1 c5 (11...c6 12.Bf6 Bf6 13.bc6 Nc6=) 12.c4 Nbd7 (12...Bd6 13.Qc2 Nbd7=) 13.Nbd2 (13.Nc3 Bd6=) 13...Qc7 14.Qc2 Ra8 15.Bb2 Bd6 16.Ra1 ½–½. Popstein,Sheila – Coltharp,Cameron, email 4AMM–06, 1997.

9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.bc6 Nc6 13.Nc3 Qd7 14.Nb5 Ra8 15.Qb1 Nb4 16.Nbd4 Qd6 17.c3 Na6 18.Nd2 Nc5 19.f4 Qc7 20.c4 dc4 21.Nc4 Nfd7 22.Bc3 Bd5 23.g3 Ne4 24.Ba1 Nd6 25.Ne5 Ne5 26.fe5 Nb7 27.e4 Ba2 28.Qb5 Bc5 29.Kg2 Bf8 30.Qb2 Nc5 31.Nb5 Qd8 32.Qc3 Qd7 33.Nd6 Bd6 34.ed6 f5 35.Kg1 Ra7 36.Qd4 Bb3 ½–½. Jaeger,Erich (2015) – Wenzel,Ulrich (2245), BdF OS–065 remoteschach.de, 2007.

9.a4 c6 10.c4 dc4 (10...ab5 11.ab5 Ra1 12.Ba1 dc4 13.dc4 Nbd7=; 10...Bd6 11.Nbd2 c5 12.d4 Qe7 13.cd5 ed5=) 11.dc4 ab5 12.ab5 Ra1 13.Ba1 cb5=.

9.a4 Bd6 10.Nbd2 c5 (10...Qe7 11.c4 ab5 12.ab5 Ra1 13.Qa1 Nbd7=) 11.Qb1 Nbd7 12.c4 Qe7 13.ba6 Ra6=.

9.a4 Nbd7 A) 10.Nbd2 c5 (10...c6 11.ba6 Ra6 12.d4 Ra7 13.c4 Bd6=; 10...Bd6 11.Nd4 Nc5 12.f4 ab5 13.ab5 Qd7=) 11.bc6 Bc6 12.Nd4 Bb7 13.f4 Rc8=; B) 10.d4 c6 (10...ab5 11.ab5 Ra1 12.Ba1 c5 13.dc5 bc5=; 10...c5 11.bc6 Bc6 12.Ba3 Ba3 13.Ra3 Qc7=) 11.Ba3 c5 12.c4 Bd6 13.Nbd2 Qc7=.

8.d3 c5

9.a4 Nbd7 10.Nbd2 (10.a5 a6 11.ba6 Ra6 12.ab6 Ra1 13.Ba1 Qb6+=) 10...a6 11.c4 ab5 (11...Bd6 12.ba6 Ra6 13.d4+=) 12.ab5 Ra1 (12...Qc7 13.d4=) 13.Ba1 Bd6 14.Qc2 Qc7 15.Bb2 (15.cd5 Bd5 16.e4 Bb7=) 15...Ra8 (15...dc4 16.Nc4 Bf3 17.Bf3 Bh2 18.Kh1+=) 16.cd5 (16.Ra1 Ra1 17.Ba1 e5=) 16...ed5 (16...Nd5 17.Ra1=) 17.Ra1 Ra1 18.Ba1 Qd8 (18...Ng4 19.h3 Ngf6 20.Bc3=) 19.Qa4 (19.Bb2 Qe7=) 19...Ne8 (19...d4 20.ed4 Bd5 21.Nc4+=) 20.Nb1 (20.Qg4 Nef6 21.Qh4 Qe7=) 20...Qa8 (20...Nef6 21.Nbd2=) 21.Qa8 Ba8 22.Nc3 Kf8 23.Bb2 Ke7 24.Kf1 h6 25.Ke1 f5 (25...Nef6 26.Kd2=) 26.h4 (26.Nh4 Ke6=) 26...g6 (26...Nef6 27.Kd2=) 27.g3 (27.h5 g5=) 27...Nc7 (27...Nef6 28.Kd2=) 28.Kd2 Ke6 29.Bd1 (29.h5 g5=) 29...Bb7 (29...Ne5 30.h5=) 30.Bb3 Be7 (30...Ne5 31.Ke2=) 31.e4 (31.h5 g5=) 31...Bf6+= 32.Nd5 Nd5 (worse is 32...Bb2 33.Nc7 Kd6 34.Nd5+=) 33.Bd5 Bd5 34.ed5 Kd5 35.Bf6 Nf6 36.Ng1 (36.Ke3 Ng4 37.Ke2 Ne5+=) 36...Ne8 (36...Ng4 37.h5 g5 38.f4+=) 37.Ne2 Nc7 38.Nc3 ½–½. Tschoepe,Frank – Woelfelschneider,Peter, TT–09 ETC, 2003.

9.c4 Nbd7 10.Nbd2 (--> 9.Nbd2 Nbd7 10.c4).

9.Nbd2 a6 10.a4 Bd6 11.e4 de4 12.Bf6 Qf6 13.Ne4 Be4 14.de4 Rd8 15.Qe1 Qf4 16.a5 ab5 17.Bb5 ba5 18.Ra5 Ra5 19.Qa5 Bc7 20.Qa3 Qe4 21.Qc5 Qf4 22.g3 Qd6 23.Qd6 Rd6 24.Ra1 Bb6 25.Kg2 Kf8 26.Ra8 Rd8 27.Ne5 Bc7 28.f4 g5 29.Kf3 gf4 30.gf4 Ke7 31.Ra7 Rc8 32.h4 Kf8 33.Nc4 Kg7 34.Rb7 Kg6 35.Ne5 Be5 36.fe5 Kf5 37.Rf7 Ke5 38.c4 h6 39.Rh7 Nc6 40.Rh6 Nd4 41.Kf2 Kf4 42.Rf6 Ke5 43.Rh6 Kf4 44.Kg2 Rg8 45.Kf1 Rf8 46.Bd7 Ke3 47.Kg2 Rg8 48.Kh3 Kf2 49.Rf6 Nf5 50.Rf5 ef5 51.Bf5 Rg3 52.Kh2 ½–½. Hiarcs 7 – Fritz 5, 1 min, 1999.

9.Be5 a6 10.ba6 Na6=+.

9.Nbd2 Nbd7

10.a4 a5 11.c4 h6 12.Ne5 Ne5 13.Be5 Nh7 14.d4 f6 15.Bg3 cd4 16.ed4 Rc8 17.cd5 Bd5 18.Bf3 Ng5 19.Re1 Bb4 20.Re3 Bd2 21.Qd2 Nf3 22.gf3 Rc4 23.Rc3 Qe7 24.Rc4 Bc4 25.Qe3 Rc8 26.Rc1 Qb4 27.d5 e5 28.Qb6 Qb2 29.Qe6 Kh7 30.Qf5 1–0. phildo (1800) – hebrit (1795), gameknot.com, 2013.

10.c4 a5 11.a4 h6 12.Rc1 Rc8 13.Qb3 Nh7 14.d4 f5 15.cd5 ed5 16.dc5 bc5 17.Ne5 Ne5 18.Be5 c4 19.Qa2 Bd6 20.Bd4 (20.Qa1 Be5 21.Qe5 Qf6 22.Qf6 Nf6=) 20...Ng5= 21.Nf3 Nf3 (21...f4 22.Ng5 Qg5 23.Bf3=) 22.Bf3 Qh4 23.h3 Qd8 (better is 23...f4 24.e4 de4+=) 24.Rc4?? (better is 24.Rfd1+=) 24...Rc4–+ (worse is 24...dc4 25.Bb7 Rb8 26.Qc4 Kh7 27.Bc6+/–) 25.Qb2 (25.Be2 Rb4–+) 25...Bb8 (better is 25...Ra4 26.Bg7 Rb4–+) 26.Bg7 (26.Qa1 Qd6 27.g3 Qg6–+) 26...Qd6 (better is 26...Qc7 27.Rd1 Qg7–+) 27.g3 Rf7 28.Bd4 1–0. GuestMWVQ – AGUSTP, freechess.org, 2017.

10.c4 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qc7 14.Qc2 Ra8 15.h3 (15.cd5 Nd5 16.Rd1 Nb4=+) 15...Bd6 16.d4 (16.Rc1 e5=+) 16...cd4 17.ed4 (17.Nd4 e5 18.Nf5 Bb4=+) 17...Rc8 (17...dc4 18.Bc4 Bf4 19.Re1–/+) 18.Rc1 dc4 19.Bc4 (19.Qb2 Bd5=+) 19...Bd5 (19...Bf4!?–/+) 20.Bd3=+ Qc2 21.Rc2 Rc2 22.Bc2 Bb4 23.Bd3 ½–½. Bivens,William – Zimmer,Georg, corr 3GMM–24, 1995.

10.c4 a6 11.ba6 Ra6 12.d4 dc4 13.Bc4 Ra7=.

10.c4 d4 11.ed4+= cd4 12.Nd4 Bc5 13.Bf3 Bf3 14.N2f3 e5? 15.Nc6+– Qc7 16.Nfe5 Ne5 17.Be5 Bd6 18.Bf6 gf6 19.Qg4 Kh8 20.Qh4 Be5 21.d4 Bh2 22.Qh2 Qh2 23.Kh2 Rae8 24.d5 Re4 25.d6 Rh4 26.Kg1 Rg8 27.d7 (27.d7 Rhg4 28.g3+–) 1–0. mrkt – adolfgalland, internet, 2011.

10.c4 Re8 11.a4 Bf8 12.a5 Rc8 (12...a6 13.Qa4 e5 14.Rfb1 dc4 15.ba6 Ba6 16.dc4 e4 17.Nh4 Bc8=) 13.ab6 ab6 (13...Qb6 14.Ne5 Ra8 15.Qa4 a6 16.Rfb1 Qd6 17.Nd7 Nd7+=) 14.Qc2 (14.Ra7 Rc7 15.Ne5 Bd6 16.f4 Qb8 17.Ra4 Rd8+=) 14...Qc7 (14...Ra8 15.Ra8 Ba8 16.Ne5 Ne5 17.Be5 Bd6=) 15.Rfd1 (15.Ra7 Ra8 16.Rfa1 Bd6 (16...Ra7 17.Ra7 Bd6=) 17.Bc3 Ra7=) 15...e5 (15...Ra8 16.cd5 ed5 17.Ra8 Ra8=) 16.e4 d4 (16...de4 17.de4 Ra8+=) 17.Nf1 (17.Ra3 Ra8=) 17...Ra8 18.Nh4 Ra1 19.Ra1 Ra8 20.Ra8 Ba8 21.Bc1 Bd6 22.g3 (22.Nf5 Bb7=) 22...Nf8 23.Bd2 Ng6 24.Nf5 Ne7 25.Nd6 Qd6 26.Qc1 Nd7 27.g4 Nf8 28.f4 ef4 29.Bf4 Qf6 30.g5 Qe6 31.Qa3 Qc8 32.Qa7 Qb7 33.Qb7 Bb7 34.Bc7 Nc8 35.Bg4 Ne6 36.Be6 fe6 37.Nd2 Kf7 38.Nf3 Kg6 (38...Ke7 39.Ne5+/–) 39.Kf2 (39.Ne5!? Kg5 40.Nd7 e5+–) 39...Kf7+/– 40.Ne5 Ke7 41.Kf3 Ke8 42.Kf4 Ke7 43.h3 Ke8 44.h4 Ke7 45.h5 Ke8 46.h6 gh6 47.gh6 Kf8? (47...Ke7+–) 48.Nd7 Kf7 49.Bb6 Nb6 50.Nb6 Kg6 51.Nd7 Kh6 52.Nc5 e5 (52...Bc8 53.Ke5+–) 53.Kg4 (better is 53.Ke5 Ba8+–) 53...Bc8 54.Kh4 1–0. Olcum,A (1945) – Sagbas,C (1780), Open, Antakya TUR, 2010.

10.c4 Ne8 11.cd5 (11.Qc2 Bf6=) 11...ed5 12.e4 (12.Qc2 a6=) 12...Nd6 13.ed5 (13.Qb3!?=) 13...Nb5–/+ 14.d4 Nd4 (14...Nc7 15.Re1–/+) 15.Nd4 cd4 16.Nc4 (16.Bd4 Bd5 17.Bf3 Nc5–/+) 16...Nf6 (16...Re8 17.Qd4 Bf6 18.Qd2 Bb2 19.Nb2–/+) 17.d6 Bd6 18.Qd4 (18.Nd6 Qd6 19.Qd4 Qd5 20.Qd5 Nd5–/+) 18...Be7 (18...Bc5 19.Qf4–/+) 19.Qf4 (19.Qe5 Qd5 20.Qg3 Qe6–/+) 19...Nd5 20.Qg3 Bf6 21.Bf6 (21.Ne5 Rc8 22.Bd3 Re8–/+) 21...Qf6 22.Nd6?? (better is 22.Rae1–/+) 22...Nf4–+ (22...Nf4 23.Qf4 Qf4 24.Nb7 Rfc8–+) 0–1. Mc Cartney,Patrick (2065) – Peng,David T (2010), 115. US Open, 2014.

10.c4 h6 11.Ne5 Ne5 12.Be5 dc4 13.dc4 Nd7 14.Bc3 Bf6 15.Bf6 Nf6 16.Nf3 Ng4 17.h3 Nf6 18.Qc2 Qc7 19.Rfd1 Rfd8 20.Rd8 Rd8 21.Rd1 Rd1 22.Qd1 g6 23.Nh2 Be4 24.Bf3 Qb7 25.Kf1 h5 26.Qa4 Bf3 27.Nf3 Ne4 28.Ne5 Nd2 29.Ke2 Ne4 30.Qc2 Kg7 31.Qd3 Nf6 32.Qg6?? fg6 0–1. Trokenheim – paul stanley, itsyourturn.com, 2000.

10.d4 Qc7 11.Qc2 a5 12.Rac1 Bd6 13.cd5 ed5 14.Rfd1 Ng4 (14...h6 15.Qa4+=) 15.h3= Ngf6 16.Nh4 Rfe8 17.Nf5 Bf8 18.Nf3 g6 19.N5d4 Rac8 20.Re1 Bh6 21.Nd2 Qb8 22.N4f3 Re6 23.Rcd1 Rd8 24.d4 c4 25.Ne5 Qc7 26.a4 Rc8 27.Rc1 Bf8 (27...Ne5 28.de5 Re5 29.Be5 Qe5+=) 28.Ndf3? (better is 28.f4!?=) 28...Bb4–/+ 29.Red1 Ne5 (29...c3!?–/+) 30.de5+= Ne4 31.Bd4 Ree8 32.Nh2 h5 33.Nf3 Qd8 34.Rf1 Re6 35.Ba1 (35.Qa2!?+=) 35...c3–/+ 36.Rcd1 Re8 37.Rd4 Bc5 (37...Qc7 38.Rc1–/+) 38.Rd3+= Bb4 39.Rc1 (39.Rd4 Qc7 40.Rc1–/+) 39...Qe7 40.Rb1 Qe6 41.Rdd1 Qf5 42.Bd3 g5 43.Qe2 (43.Rb3!?–/+) 43...g4–+ 44.Nd4 Qg5 (44...Qe5 45.hg4 Nd2 46.gh5 Qd4 47.Qd2–/+ (47.ed4?? Re2 48.Bc3 Bc3 49.Be2 Nb1 50.Rb1 Bd4–+)) 45.f4 gf3! 46.Nf3 (46.Nf3 Qg3 Combination; 46.Qf3 Nd2 Double attack (46...Nd2 Decoy)) 46...Qg7 47.Rbc1 Rc7 48.Rc2 Qg3 (48...Ng5 49.Nd4 Re5 50.Qh5–+) 49.Rdc1–/+ Rec8 50.Kh1 Kf8 (50...h4 51.Kg1–/+) 51.Rf1 d4 52.ed4 Nd2 53.Nd2? (53.Qe3 Bf3 54.Rf3 Nf3 55.gf3 Qh3 56.Kg1 Rd8–+) 53...cd2 54.Rd2 (54.Rc6 Rc6 55.bc6 Bc6 56.Bc4 Qh3 57.Kg1 Bg2 A) 58.Rf7 Ke8 59.Rg7 Qh1 60.Kf2 d1N (60...Qa1?? 61.Qh5 Kd8 62.Qh8 Bf8 63.Qf8) 61.Qd1 Qd1 62.Bb5 Kf8 63.Kg2 Rc2 64.Kg3 Qe1 65.Kh3 Kg7 66.Bc6 Be7 67.Bc3 Qh4; B) 58.Qg2 Qg2 59.Kg2 Rc4 60.Bb2–+) 54...Bd2–+ 55.Qd2 Bg2 (55...Bg2 56.Qg2 Qd3–+). Hanison,Bernard (1880) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

10.c4 dc4

11.Nc4 a6 12.Qb3=.

11.Nc4 Qc7 12.Nfe5 Rad8 13.Bf3 Bf3 14.Nf3 Ng4 15.Qe2 Bf6 16.Bf6 Ndf6 17.a4 Nd5 18.Rfc1 h5 19.h3+/– Ngf6 20.d4 Ne4+= 21.Ncd2 f6?? 22.Ne4+– f5 23.Neg5 Qd6 24.Ne5 f4 25.Qh5 Nf6 26.Qh4 fe3 27.Ng6 ef2 28.Kf1 Qh2 29.Qh8 1–0. pcmvr (2225) – michelleke (2370), net–chess.com, 2006.

11.Nc4 Nd5 12.Qb3 N7f6 13.a4 Bd6 (13...a6!?=) 14.Nd6 Qd6 ½–½. Scheele,Marcus – Verfuerth,Christian, Bochum Post op, 1991.

11.Nc4 Re8 12.a4 a6 13.Qb3 Nd5 (13...Bd5 14.e4 Bc4 15.Qc4+=) 14.Rac1 (14.ba6 Ba6 15.Rfb1 Bf6=) 14...Rc8 (14...ab5 15.ab5 N7f6 16.Ra1+=) 15.Rfd1 (better is 15.ba6 Ba6 16.Rb1+=) 15...Bf6? (better is 15...ab5 16.ab5 Qc7=) 16.Nd6+– Bb2 (16...ab5 17.Nb7 Qc7 18.a5 Qb7 19.Bf6 N7f6 20.Qb5+=) 17.Qb2 (17.Nb7?! Qc7 18.Qb2 Qb7+=) 17...Qc7 (17...ab5 18.ab5 e5 19.Ra1+–) 18.Ne8 Re8 19.d4 Qd8? (19...Ra8+–) 20.ba6 Ba6 (20...Ba8+–) 21.Ba6 (21.Ba6 Qc7 22.Bb5+–) 1–0. Kjaerstad,Eivind J – Wilk,A, corr 3GMM–02, 1996.

11.Nc4 Re8 12.a4 Qc7 13.Nfe5 Rad8 14.a5+= Ne5 15.Be5+/– Qc8 16.ab6+– ab6?? 17.Nb6 Nd5 18.Nc8 Rc8 0–1. pcmvr (2225) – guerino (2100), net–chess.com, 2006.

10.c4 Qc7

11.a4 a5 12.Qb3 Rad8 (12...Bd6 13.Bc3=) 13.Rfd1 (13.h3 Bd6=) 13...Rfe8 (13...h6 14.h3=) 14.Rac1 Qb8 (14...Bd6 15.g3=) 15.Qa2 (15.h3 Bd6=) 15...Qa8 (15...h6 16.h3=) 16.Qa1 (16.d4 Rc8=) 16...Bf8 (16...h6 17.d4=) 17.Qb1 (17.d4 Be7=) 17...Be7 18.Qa1 Bf8 ½–½. Mathonia,Claude (2215) – Wiechert,Hans (2290), Oberliga Baden, 2007.

11.a4 a5 12.Rc1 Bd6 13.cd5 ed5 14.Qc2 Rfe8 15.Rfd1 Ng4 16.h3 Bh2 17.Kf1 Nf2 18.Kf2 Qg3 19.Kf1 Re3 20.Re1 Qf4 21.d4 Bg3 22.dc5 Nc5 23.Bd4 Rae8 24.Bc5 bc5 25.Qc5 Qa4 26.Nd4 Be1 27.Re1 Qa2 28.N2f3 a4 29.Nc2 R3e4 30.Nfd4 Qb2 31.Qa7 R4e7 (31...Bc8 32.Qa4 Qc3 33.Qb3+=) 32.Qa4+= Qc3 33.Qb4 Qc7 34.Qd2 Re5 (34...Qh2 35.Bd3+/–) 35.Bd3+/– Bc8 36.Rb1 Bd7 37.b6 Qb8 38.Qc3 Rc8 39.Qa5 Rh5 40.Qa7 Qd6 41.b7 Rb8 42.Nb4 Bh3 43.Qb8 (43.gh3 Rh3 44.Ne2 Rh1 45.Kg2 Qh2 46.Kf3 Qh5 47.Ke3 Qh6 48.Kd4 Qf6 49.Kd5 Qd8 50.Ke4 Rh3+–) 43...Qb8 44.Nbc6 Bg2 45.Ke2 Bf1 46.Kd2 (46.Kd2 Rh2 47.Kc3 Bd3 48.Nb8 Bb1 49.Nbc6 Rh3 50.Kb2+–) 1–0. Johansson,Mats – Nemec,Zdenek, b2–b4.com, 2005.

11.a4 dc4 12.Nc4 Ng4 13.e4 (13.Re1 Rad8 14.h3 Bf3 15.Bf3 Qh2 16.Kf1 Nde5=) 13...f5 14.e5 Bd5 15.d4 cd4 16.Qd4=.

11.a4 Rad8 12.Qc2 (12.a5 e5 (12...dc4 13.Nc4 Ng4 14.g3 Bf6 15.Qc2 Bb2 16.Qb2=) 13.Qc2 e4 14.de4 de4 15.Ng5 Bd6 16.Nge4=) 12...e5 (12...Bd6 13.a5 (13.cd5 Nd5 14.a5 Nb4 15.Qc3 f6 16.Qc4=) 13...ba5 14.cd5 Nd5 15.Nc4 Nb4 16.Qc3=; 12...dc4 13.Qc4 Bd5 14.Qc3 Nh5 15.a5 Bf6 16.d4+=) 13.cd5 Nd5 14.Nc4 Bf6 (14...Nb4 15.Qd2 e4 16.de4=) 15.Rfd1 (15.a5 Nb4 16.Qb3=) 15...Rfe8 (15...a5 16.ba6 Ba6 17.Qb3=; 15...a6 16.ba6=) 16.a5+= e4 (16...Nb4 17.Qb3+=) 17.de4 Nb4 18.Qb3 Be4 19.Nd6 Re7 20.Ne4 Bb2 21.Qb2 Re4 22.Ng5 Rh4 (22...Re7 23.ab6 ab6 24.Bc4+=) 23.g3 (23.f4 A) 23...ba5 24.Bc4 Rf8 25.Ne6 fe6 26.Be6 Rf7 27.Rd7 Qd7 28.Bd7 Rd7 29.Qb3 Kf8 30.Qe6+– (30.Ra5?! Rh6+–); B) 23...Nf6+/–) 23...Rh6 24.Bc4 (24.ab6 Rb6 25.Bc4 Rf8+=) 24...Rf8+= 25.f4 Rg6 (25...ba5 26.Qb3 Rf6 27.Qa3=) 26.Qb3 (26.Qd2 Ne5 27.ab6 ab6 28.fe5 Rg5+/–) 26...Ne5 27.ab6 ab6 28.Be2 (28.Nh7 Kh7 29.fe5 Qe5 30.Bf7 Rg3 31.hg3 Qg3 32.Kf1 Qf3 33.Kg1 Qg3 34.Kh1 Qh3 35.Kg1 Qg3=) 28...Qe7+= 29.Ne4 (29.Qc3!?+=) 29...Ng4= 30.Bg4 Qe4 (worse is 30...Rg4 31.Qc4=) 31.Bh3 Nc2 32.Ra7 (32.Rac1 Qe3 (worse is 32...Ne3 33.Re1+/–) 33.Qe3 Ne3+=) 32...c4 (worse is 32...Ne3 33.Re1 Re6 34.Ra2+=) 33.Qc3 Ne3 34.Re1 Re6 (34...Nd5 35.Qg7 Kg7 36.Re4 Rh6=) 35.Ra2+= Nd5 36.Re4 (worse is 36.Be6 Nc3 37.Re4 fe6–/+ (worse is 37...Ne4 38.Bc4 h6 39.Ra6+=)) 36...Nc3 37.Re6 (worse is 37.Be6 fe6 (worse is 37...Ne4 38.Bc4 Nd6 39.Bd3+=) 38.Ree2 h6–/+) 37...Na2 (worse is 37...fe6 38.Be6 Kh8 39.Ra6 Nb5 40.Rb6+/–) 38.Rb6 g6 (38...c3 39.Rc6 Rb8 40.Rc7+=) 39.Bf1 c3 40.Rc6 Rb8 (40...Kg7 41.Bc4 Nb4 42.Rc7=) 41.Rc7+/– Kf8 42.Bc4 Nb4 43.Bf7 Rb5 44.Bb3 Nd5 (better is 44...Nc6! 45.Ba4 Rc5=) 45.Bd5+/– Rd5 46.Rc3 h5 ½–½. Franke,Roland – Belchev,Branimir Petrov, corr ICCF EU–ch GT238, 1985.

11.a4 Rfd8 12.Ra2 e5 13.Qa1 d4 (13...Bd6 14.cd5 Bd5 15.Ra3+=) 14.ed4 (14.a5 a6 15.ab6 Qb6 16.ba6 Ra6 17.Ra6 Qa6 18.Qa6 Ba6=) 14...ed4 15.a5 Rac8 16.a6 Ba8 17.Re1 Bd6 18.Bf1 Re8 19.g3 Ne5 20.Ng5 Qe7?? (better is 20...Ng6+=) 21.f4+/– Nfg4 22.fe5 (better is 22.Re2!?+/–) 22...Qg5= 23.Ne4 (23.ed6 Qf6 24.Bd4 cd4 25.Ne4 Re4 26.d7+/– (worse is 26.Re4 Be4 27.de4 Qd6–/+)) 23...Be4 (23...Qe5 24.Bc1 Qh5 25.h3 Be4 26.Re4 Re4 27.de4–+) 24.Re4 (24.ed6 Nh2! 25.Re4 Qg3 26.Bg2 Nf3 27.Kf1 Nd2 28.Kg1 Re4 29.de4 Nc4–+) 24...Be5 25.Bc1 Qh5 26.Rae2? (better is 26.Qb2!?–/+) 26...f5–+ 27.h3?? (27.Rg4 Qg4 28.Bd2–+) 27...fe4 28.hg4 Qg4 29.Rg2 (29.Bd2 e3 30.Be1 Re6–+) 29...e3 30.Be2 Qh3 31.g4 Rf8 32.Ba3 Rf2! 33.Bf1 (33.Rf2 ef2) 33...e2 (33...Rcf8 34.Bc5 Rg2 35.Bg2 Qh2) 34.Rf2–+ Qg3 35.Bg2 (35.Rg2 Qe3 36.Rf2 Rf8 37.Qc1 Qf2 38.Kh1 Qh2) 35...Qh2 0–1. Starr,Albert Martin – Dupree,Charles (1845), San Francisco MI Fall op, 2005.

11.a4 Ng4 12.h3 (12.a5 dc4 13.dc4 Rfd8=) 12...Ngf6 13.Qc2 (13.cd5 ed5 14.a5 ba5=) 13...a6 14.Bc3 (14.cd5 Nd5 15.Nc4 Bf6=) 14...e5 15.e4 (15.ba6 Ra6 16.d4 cd4 17.ed4 e4=) 15...d4+= 16.Bb2 Nh5 17.Nh2 (17.Rae1 Nf4+=) 17...Nf4–/+ 18.Bg4 Nf6 19.g3 (19.Bf3 Qd6–/+) 19...Ng4 20.hg4 Ne6 (20...Ne2 21.Kg2 ab5 22.Nb1 bc4 23.Qc4–/+) 21.Kg2 (21.Nhf3 Qd6–/+) 21...Bg5 (21...Qd6 22.Rh1–/+) 22.Ndf3 (22.Nhf3 Bd2 23.Nd2 Qd6–/+) 22...Bf6 23.Rfb1 Rfd8 (23...Rfb8 24.Rh1–/+) 24.Bc1 ab5 25.ab5 Qe7 26.Bd2 Re8 (26...Ra1 27.Ra1 Ra8 28.Ra8 Ba8 29.Nf1–/+) 27.Qc1 Qc7 (27...h6 28.Qc2–/+) 28.Ra8 (28.g5 Be7+=) 28...Ra8–/+ 29.Ra1 (29.g5 Be7–/+) 29...Ra1 30.Qa1 h6 (30...Be7 31.Qh1–/+) 31.Qa7 (31.Qh1 Be7–/+) 31...Kh8 (31...Be4 32.Qc7 Bf3 33.Kf3 Nc7 34.Ke4=) 32.Qa1 (32.Kg1+=) 32...Kg8 (32...Bc8 33.Qa8+=) 33.Ng1 (33.Qa7!?=) 33...Bg5 (33...Be7 34.Nhf3–/+) 34.Nhf3 (34.Bg5 Ng5 35.Ngf3 Ne6–/+) 34...Bd2 35.Nd2 f6 (35...Bc8 36.Ngf3+=) 36.Ngf3 Kh7 (36...Bc8 37.Qh1+=) 37.Nh4 (37.Qh1 Qd7+=) 37...Bc8 (37...Qd7 38.Qd1+=) 38.Qa8 (38.Qd1!?+=) 38...g6 39.f3 Qb7 (39...Nd8 40.Kf2+=) 40.Qb7= Bb7 41.Kf2 Bc8 42.Nb3 (42.Ng2 Nc7=) 42...Kg7 43.Ng2 g5 (43...Nc7 44.Ke2=) 44.Nc1 (44.Ne1 Kg6=) 44...Nc7 45.Ne2 (45.Nb3 Be6=) 45...Kf7 46.Ne1 Ke7 47.Kg2 (47.Nc2 Be6+=) 47...Kd6 (47...Ne8 48.Nc2+=) 48.Ng1 (48.Nc2 Bd7=) 48...Ne8 (48...Ne6 49.Ne2+=) 49.Nh3 (49.Ne2 Be6+=) 49...Ng7+= 50.Nf2 Bb7 51.Nd1 (51.Nc2 h5=) 51...Ne6 (51...h5 52.gh5 Nh5 53.Nc2=) 52.Nb2 (52.Nc2 Nc7=) 52...Nf8 53.Na4 (53.Nc2 Bc8=) 53...Kc7 54.Nc2 (54.Nb2 Ng6=) 54...Nd7 (54...Bc8 55.Kf2=) 55.Na1 (55.Nb2 Kd6=) 55...Bc8 56.Nb3 Nb8 57.Kf2 (57.Nb2 Kd6=) 57...Be6 58.Ke2 (58.Nb2 Kd6=) 58...Nd7 59.Kd2 (59.Nb2 Kd6=) 59...Bf7 (59...Kd6 60.Nb2=) 60.Kc2 (60.Nb2 Kd6=) 60...Kd8 (60...h5 61.gh5 Bh5 62.g4+=) 61.Kb2 (61.Nb2 Ke7=) 61...Ke7 62.Ka3 (62.Kc2 Be6=) 62...Ke6 (62...Kd6 63.Nb2+=) 63.Nb6 Nb6 64.Nc5 Kd6 65.Kb4 Nc8 66.Na4 Kc7 67.c5 Ba2 (67...h5 68.gh5 Bh5 69.g4=) 68.Nb2 Ne7 (68...Bb1 69.Ka5=) 69.Ka5 (69.Nd1 Bf7=) 69...Ng6 (69...Kb7 70.Nd1=) 70.Ka6 Nf8 71.Ka5 Bb1 (71...Ne6 72.Kb4=) 72.Ka4 (72.Kb4 Bc2=) 72...Ne6+= 73.Kb4 Bc2 (73...Ng7 74.c6+=) 74.Kc4 Nf8 (74...Kb7 75.Kb4=) 75.Kb4 Ne6 (75...Kb7 76.Kc4=) 76.Kc4 Kd7 (76...Kb7 77.Kb4=) 77.Kb4 Bb1 (77...Kc8 78.Kc4=) 78.Kc4 Ba2 79.Kb4 Kc8 80.Nc4 (80.Na4 Bb1 81.Kc4 Kb7=) 80...Bb1 81.Nb2 Kb7 82.Kc4 Ba2 (82...Bc2 83.c6 Kb6 84.Kb4=) 83.Kb4 Kb8 84.Nc4 (84.Nd1 Ng7=) 84...Bb1 85.Nb2 Kc8 (85...Bc2 86.b6=) 86.Kc4 Ba2 87.Kb4 Bb1 (87...Kc7 88.Nc4=) 88.Kc4 Kb7 89.Kb4 (89.Kd5 Nc7 90.Kc4 Ba2 91.Kb4 Ne6=) 89...Bc2 90.Kc4 Kb8 (90...Ng7 91.Kd5=) 91.Kb4 (91.Kd5 Nc7 92.Kc6 Bb3+=) 91...Kc8 (91...Ng7 92.b6 h5 93.gh5 Nh5 94.c6+/–) 92.Kc4 Kd7 (92...Nd8 93.Kd5=) 93.Kb4 Bb1 (93...Ng7 94.c6 Kd6 95.Nc4 Kc7 96.Kc5=) 94.Kc4 Ba2 (94...Ng7 95.Kd5 Ba2 96.Nc4=) 95.Kb4 Ng7 96.Nc4 Bc4 97.Kc4 h5 98.gh5 (98.Kd5 hg4 99.fg4 Kc7=) 98...Nh5 99.Kd5 White prepares the advance c6 (99.c6 Kd6 100.Kb4–/+) 99...g4 (99...Ng3 100.b6 Ne2 101.c6 Kc8+–) 100.fg4+/– Ng3 101.b6 Kc8 102.c6 Nh1 103.Kd6 Nf2 104.b7 Kb8 105.Kd7 (105.Kd7 Nd3 106.c7 Kb7 107.c8Q Kb6 108.Qc6 Ka5 109.Qf6+–) 1–0. Utzinger,Kurt (1990) – Yace (2400), Training rapid, 2001.

11.Qb3 a6 12.ba6 Ra6 13.Rfb1 Rfa8 14.a3 Bd6 15.cd5 Bd5=.

11.Qb3 Bd6 12.cd5 ed5 (12...Bd5 13.Qc3 a6 14.e4 Bb7 15.a4 Bf4=) 13.Rfc1 Rfe8 14.a4 a6 15.ba6 Bc6=.

11.Qb3 Rfd8 A) 12.a4 a6 13.Rfb1 ab5 14.ab5 Bd6 15.Rc1 e5=; B) 12.Rfc1 a6 (12...Bd6 13.cd5 Bd5 14.Qc3 Qb8 15.e4 Bb7=) 13.ba6 Ra6 14.d4 Bd6 15.Bd3 Ra7=; C) 12.Rab1 Bd6 (12...a6 13.ba6 Ra6 14.Rfc1 Rda8 15.a3 Bd6=) 13.cd5 Bd5 14.Qa4 a6 15.ba6 Bc6+=; D) 12.cd5 Nd5 13.a4 a6 14.ba6 Ra6 15.Rfb1 Bc6=.

11.Qb3 e5 12.cd5 Bd5 (12...Nd5 13.a4 Bf6 14.Ne4 Be7 15.Nc3 Nc3 16.Bc3=) 13.Qc2 (13.Nc4 Bd6 14.e4 Bc4 15.Qc4 a6 16.a4=) 13...Rfe8 (13...Bd6 14.Ne4 Rfd8 15.a4 Ne4 16.de4=) 14.e4 Be6 (14...Bb7 15.Nc4 Bd6 16.a4=) 15.d4 (15.Ng5 Bd6 16.Ne6=) 15...ed4 16.Nd4 Bg4 17.h3 (17.Bg4 Ng4 18.N4f3 a6=) 17...Be2 18.Ne2 Rad8 19.Nc4 Bd6 20.Nd6 Qd6 21.Rfd1 Qe7 22.f3 Nf8 (22...Ne5 23.Rac1=) 23.Ng3+= Qe6 24.Nf5 Ng6 25.Rd2 (25.Rd8 Rd8 26.Rd1 Rd1 27.Qd1 Ne8+=) 25...Ne7 26.Ne7 Qe7 27.Rad1 h6 28.Rd3 Rd3 29.Qd3 Qe6 (29...Nh5 30.Qd6+=) 30.Qd6 Re7 31.Qg3 (31.Bf6 Qf6 32.Qf6 gf6+/–) 31...Ne8+= 32.Rd8 (32.Rd5 Kf8+=) 32...f6= 33.f4 (33.a3 Kf7=) 33...Qe4 (better is 33...Kf7!? 34.e5 Qa2+=) 34.Bf6+= Qe1 35.Qe1 Re1 36.Kf2 Re6 (36...Re4 37.Be5 Kf8 38.Kf3=) 37.Be5 Kf7 38.g4 Re7 39.Ra8 (better is 39.a3+=) 39...Nc7? (better is 39...Nf6!?+=) 40.Ra7+– Nb5 (40...Nd5!? 41.Re7 Ne7+–) 41.Re7 Ke7 42.Bg7 Kf7 43.Be5 (43.a4 Nd6 44.Bh6 Ne4 45.Ke3 Nc3+–) 43...Na3 44.Ke2 (44.f5 Nc4 45.Bf4 Kg7+–) 44...Ke6 (44...Nc4 45.Kd3 Ne5 46.fe5 Ke6+=) 45.Bg7+– Nb5 (45...h5 46.gh5 Kf7 47.h6+–) 46.Kd3 (46.a4 Nd6 47.Bh6 Kd5+–) 46...Kd5 47.f5 Nd6 48.Bh6 b5 49.Bg7 (49.Bf4 c4 50.Kc2 Nc8+–) 49...b4 50.h4 c4 51.Kc2 Ke4 (51...Nb5 52.h5 Ke4 53.f6 Nd4 54.Kb1+–) 52.Bf8 b3 53.ab3 cb3 54.Kb3 Nf7 55.f6 Kf4 56.g5 Kf5 57.Bb4 (57.Bc5 Ne5+–) 57...Ne5 58.Be1 Kg6 (58...Kg4 59.Kc3+–) 59.Kc3 (59.Bc3 Nd7+–) 59...Kf7 (59...Nd7 60.Kd3 Nf6 61.gf6 Kf6 62.Ke4+–) 60.Bg3 (60.h5 Nd7+–) 60...Ng6 (60...Ng4 61.h5+–) 61.Kd4 Nf8 62.Ke4 Ke6 63.Be1 Ng6 (63...Nd7 64.Bc3 Nc5 65.Kf4+–) 64.h5 Nh8 65.Bc3 Nf7 66.g6 1–0. Werk,Manfred (2075) – Mueller,Armin (2055), Oberwinden GER Open, 2007.

11.Rc1 a6 12.a4 Ra7 (12...ab5 13.ab5 (13.cb5 Ra7 14.Qc2 Rfa8 15.Ra1 Bd6 16.Rfc1 e5+=) 13...Bd6 (13...dc4 14.Nc4 Ng4 15.e4 Bg5 16.Rc2 Bf4=; 13...Rfd8 14.Qc2 Bd6 15.Ra1 dc4 16.dc4 e5=; 13...Qd6 14.Qb3 Rfd8 15.Qc3 Ne8 16.cd5 ed5=) 14.cd5 ed5 (14...Bd5 15.e4= Bb7 16.Qc2 Ng4=) 15.Re1 Rfe8 16.Qc2 Ra5+=) 13.Qb3 (13.cd5 A) 13...Bd5 14.ba6 (14.e4 Bb7 15.Qc2 Qf4 16.Nc4 Rfa8=) 14...Ra6= 15.d4 Ra5 16.Bb5 Rc8=; B) 13...ed5 14.Nd4 Qd8 15.Nf5 Re8 16.Bf3 Bf8=; C) 13...Nd5 14.ba6 Ba6 15.Ne4 Rfa8 16.Nd4 Qe5+=; 13.ba6 Ra6 14.d4 Ra7 15.cd5 Bd5 16.Bb5 Qb7=) 13...Rfa8+= 14.Ra1 Bd6 15.h3 (15.Rfb1 e5 16.ba6 Ra6+=) 15...e5 16.cd5 (16.Rfd1 d4+=) 16...ab5 (16...Bd5 17.Nc4+=) 17.ab5= Bd5 18.Nc4 Bf8 (18...Qb8 19.Ra7 Ra7 20.Ra1=) 19.Qc3 e4 20.Ng5 Ra4 (20...ed3 21.Qd3 Ra4 22.Ra4 Ra4 23.Rc1 Rc4 24.Rc4+/–) 21.Ne4 (21.Ra4!? Ra4 22.de4+–) 21...Ne4+= 22.de4 Be4 23.Ra4 Ra4 24.Ra1 (24.Rd1 Rb4+/–) 24...Qa7 (24...Ra1 25.Ba1 Qd8 26.f3=) 25.Nd6 (25.Rd1!?+/–) 25...Ra1= 26.Ba1 Qa2 27.Ne4 Qb1 (27...Qe2!? 28.Qb2 Qd1 29.Kh2 Qd3=) 28.Bf1+= Qe4 29.Bd3 Qa4 30.Bb2 Nf6 (30...Qd1 31.Bf1=) 31.Qc2 (31.Qc1 Be7+=) 31...Qc2 32.Bc2 Ne8 33.Kf1 Nd6 34.Bd3 f6 ½–½. Van Esbroeck,Dirk – Decallonne,Bernard, corr W–11Cup prel095, 1997.

11.Rc1 dc4 12.Nc4 (12.d4 a6 (12...Rfc8 13.dc5 Bc5 14.Nc4 a6 15.ba6 Ra6 16.Na3 Ng4=) 13.ba6 Ra6 (13...Ba6 14.Nc4 b5 15.Nce5 Ne5 16.Ne5 Bd6=; 13...Bc6 14.Nc4 Ra6 15.dc5 Nc5 16.Be5 Qd7=; 13...Bd5 14.Bc4 Bc4 15.Nc4 Ra6 16.Qb3 Qa7=) 14.Bc4 b5 15.Bb5 Ra2+= 16.Bc3 Rfa8+=) 12...Nd5 (12...a6 13.ba6 Ra6 14.a3+= b5 15.Ncd2 Rfa8 16.Qc2 Bd6+=) 13.Nfe5 (13.a4 a6 14.Qc2 Rfd8 15.d4 ab5 16.ab5 cd4=; 13.d4 a6 14.ba6 Ra6 15.Na3 Raa8 16.Nb5 Qc6=) 13...Ne5 (13...f6 14.Nd7 Qd7 15.a4 Nb4 16.Ba3 Nd5=) 14.Be5 Qd7 15.e4 (15.a4 Rfd8 16.Qb3 f6=) 15...Nf6 (15...f6 16.Bg3 Nc7=) 16.a4 (16.Qb3 Qd8+=) 16...Rfd8 (16...Bd8=) 17.f4 Ne8 18.f5 (18.Qc2 Nd6=) 18...Bf6 (18...Bg5 19.Rb1=) 19.Bg3 (19.fe6 Qe6 20.Bg4 Qe7 21.Bf6 Nf6=) 19...ef5 20.Rf5 g6 (20...Qe6 21.Bg4 Bd4 22.Kh1=) 21.Rf1+= Qe7 22.Qc2 Bh4 ½–½. Zahn,Richard – Hasenstab,Armin, GER–ch Polizei, 1998.

11.Rc1 Rac8 12.Qc2 (12.Qa4 a6 (12...a5 13.cd5 Nd5 14.Nc4 Rfd8 15.Nfe5 Bf6=) 13.ba6 Ra8 14.a7 Bc6 15.Qc2 Ra7=; 12.a3 a6 (12...Rfd8 13.cd5 Nd5 14.Qa4 Bf6 15.Bf6 N7f6=; 12...a5 13.cd5 Nd5 14.Qc2 Bf6 15.Bf6 N7f6=; 12...Bd6 13.cd5 ed5 14.Nb3 Ne5 15.Kh1 Qe7=) 13.ba6 Ba6 14.Qb3 Bb7 15.Qc3 Rfd8=; 12.cd5 Nd5 13.Qa4 Ra8 14.d4 Rfc8 15.Rfd1 Bd6+=) 12...Rfd8 (12...Bd6 13.Rfe1 Ra8 14.a3 a6 15.ba6 Ba6=; 12...e5 13.cd5 Nd5 14.Rfd1 Rfd8 15.Qa4 Bd6+=; 12...a6 13.ba6 Ba6 14.Rb1 Bb7 15.cd5 Nd5=) 13.a4 (13.cd5 Nd5 14.Qa4 Bf6 15.Bf6 N5f6=) 13...dc4 (13...Bd6 14.cd5 Bd5 15.Qc3 Bf3=) 14.Nc4 Ng4 15.e4 Bf6 16.h3 ½–½. Dzieniszewski,Andrzej – Wolny, Jelenia Gora Poland, 1983.

11.Rc1 Ng4 12.d4 dc4 13.dc5 (13.Nc4? Bf3 14.g3 Be2 15.Qe2 Ngf6–+) 13...Nc5 14.Rc4 (14.Bc4 Rad8 15.g3 Bf3 16.Qf3 Rd2 17.Bg7 Nh2 (17...Kg7?! 18.Qg4 Kh8 19.Rfd1–+) 18.Kh2 Kg7–+) 14...f5 15.g3 (15.h3 Nf6=) 15...Bd5 16.Rc1 Ba2 17.Nd4 Ne5 18.Bc4 (18.N2b3 Qd6 19.Nc5 bc5+=) 18...Bc4 19.Nc4 Nc4 20.Rc4 Qb7 21.Rc5 (21.Ba3!? a6 22.Bc5 bc5 23.Ne6 ab5 24.Nc5+=) 21...bc5–/+ (21...Bc5?! 22.Ne6 Rfc8 23.Ng7=) 22.Ne6 Rf7 (22...Qb5?! 23.Qd5 Qe8 24.Ng7 Qf7 25.Nf5=) 23.Qc2 Rc8 (23...Qb5?! 24.Nc7 Qc6 25.Na8 Qa8 26.Ba3+=) 24.Qc4 (24.Ng7 Qe4 25.Qc1 Rg7 26.Bg7 Kg7 27.Qa1 Kg8 28.Qa7 Ra8–/+) 24...Qe4 (24...a6!? 25.Ng7 ab5 26.Qa2–+) 25.Qa2 (25.Bd4!?–/+) 25...c4–+ 26.Qa6 Rb8 27.Nd4 (27.Rc1 Qd5 28.Bd4 Rb5–/+) 27...Qb7 28.Qe6 Bf6 29.Qc4 Bd4 30.Qd4 (30.Bd4 Qb5 31.Qa2 Qb3–+) 30...Qb5 31.Ba3 Rd7 32.Qf4 Rbd8 33.h4 Rd1 34.Rd1 Rd1 35.Kg2 (35.Kh2–+) 35...Qc6 36.Qf3 (36.e4 Qe4 37.Qe4 fe4 38.Bb4–+) 36...Rg1!! (36...Rg1 37.Kg1 Qf3–+) 0–1. Mauron,Regis – Claisse,Patrick (1915), Montigny le Bretonneux Noel op, 2008.

11.Qc2 a5 12.Rac1 Bd6 13.cd5 ed5 14.Rfd1 Ng4 (14...h6 15.Qa4+=) 15.h3= Ngf6 16.Nh4 Rfe8 17.Nf5 Bf8 18.Nf3 g6 19.N5d4 Rac8 20.Re1 Bh6 21.Nd2 Qb8 22.N4f3 Re6 23.Rcd1 Rd8 24.d4 c4 25.Ne5 Qc7 26.a4 Rc8 27.Rc1 Bf8 (27...Ne5 28.de5 Re5 29.Be5 Qe5+=) 28.Ndf3? (better is 28.f4!?=) 28...Bb4–/+ 29.Red1 Ne5 (29...c3!?–/+) 30.de5+= Ne4 31.Bd4 Ree8 32.Nh2 h5 33.Nf3 Qd8 34.Rf1 Re6 35.Ba1 (35.Qa2!?+=) 35...c3–/+ 36.Rcd1 Re8 37.Rd4 Bc5 (37...Qc7 38.Rc1–/+) 38.Rd3+= Bb4 39.Rc1 (39.Rd4 Qc7 40.Rc1–/+) 39...Qe7 40.Rb1 Qe6 41.Rdd1 Qf5 42.Bd3 g5 43.Qe2 (43.Rb3!?–/+) 43...g4–+ 44.Nd4 Qg5 (44...Qe5 45.hg4 Nd2 46.gh5 Qd4 47.Qd2–/+ (47.ed4?? Re2 48.Bc3 Bc3 49.Be2 Nb1 50.Rb1 Bd4–+)) 45.f4 gf3! 46.Nf3 (46.Nf3 Qg3 Combination; 46.Qf3 Nd2 Double attack (46...Nd2 Decoy)) 46...Qg7 47.Rbc1 Rc7 48.Rc2 Qg3 (48...Ng5 49.Nd4 Re5 50.Qh5–+) 49.Rdc1–/+ Rec8 50.Kh1 Kf8 (50...h4 51.Kg1–/+) 51.Rf1 d4 52.ed4 Nd2 53.Nd2? (53.Qe3 Bf3 54.Rf3 Nf3 55.gf3 Qh3 56.Kg1 Rd8–+) 53...cd2 54.Rd2 (54.Rc6 Rc6 55.bc6 Bc6 56.Bc4 Qh3 57.Kg1 Bg2 A) 58.Rf7 Ke8 59.Rg7 Qh1 60.Kf2 d1N (60...Qa1?? 61.Qh5 Kd8 62.Qh8 Bf8 63.Qf8) 61.Qd1 Qd1 62.Bb5 Kf8 63.Kg2 Rc2 64.Kg3 Qe1 65.Kh3 Kg7 66.Bc6 Be7 67.Bc3 Qh4; B) 58.Qg2 Qg2 59.Kg2 Rc4 60.Bb2–+) 54...Bd2–+ 55.Qd2 Bg2 (55...Bg2 56.Qg2 Qd3–+). Hanison,Bernard (1880) – Nemec,Zdenek (2040), TT–14 ETC, 2004.

11.Qc2 a5 12.Rac1 Rad8 13.Rfd1 Rc8 14.Qc3 Rfd8 15.a4 Qd6 16.Re1 Qb8 17.Red1 Bd6 18.Re1 Re8 19.Rcd1 Qc7 ½–½. Hanison,Bernard – Nemec,Zdenek, CO1–05 www.b2–b4.com, 2004.

11.Qc2 Rac8 12.a4 a5 13.ba6 Ba6 14.Bc3 Bd6 15.a5 ba5 16.Ba5 Qb7 17.Rfb1 Qc6 18.Bc3 h6 19.Nh4 Bb8 20.Qa2 Qd6 21.Nhf3 Rc6 22.Bd1 dc4 23.Ba4 Rb6 24.Rb6 Qb6 25.Bd7 Nd7 26.Qa6 Qa6 27.Ra6 cd3 28.Rc6 Rd8 29.Ba5 Re8 30.Ne1 Ne5 31.Rc5 Bd6 32.Rb5 Ra8 33.Bc3 f6 34.Be5 Be5 35.Nd3 Bc3 36.Nb3 Rd8 37.Nbc5 e5 38.g4 Kh7 39.Rb3 Ba1 40.Ra3 (40.Ra3 e4 41.Ne4+– (< 41.Ra1 ed3 42.Rd1 h5+–)) 1–0. pcmvr (2225) – ironhorse (2270), net–chess.com, 2006.

11.Qc2 Rac8 12.a4 Rfd8 13.a5 Ba8 14.Ra4 Bd6 15.Rfa1 Ne5 16.Ne5 Be5+= 17.ab6 ab6 18.Ra7 Bb7 19.Rb7! (19.Rb7 Bh2 20.Kh1 Qb7 21.Bf6 gf6 22.Kh2+/–) 1–0. pcmvr (2760) – kuksifae (2360), net–chess.com, 2006.

11.Qc2 Rac8 12.Rfd1 Rfd8 (12...e5 13.cd5 Nd5 14.Nc4 Bd6 15.Qa4 Ra8=; 12...Ra8 13.cd5 ed5 14.Rdc1 a6 15.ba6 Ra6=; 12...Rcd8 13.cd5 Nd5 14.d4 Bd6 15.dc5 Nc5+=) 13.Ne1 (13.a4 Bd6= (13...Ng4 14.a5 Bd6 15.h3 Ngf6+=) 14.a5 ba5 15.Qc3 a6=; 13.Rac1 Bd6 14.cd5 Bd5 15.Ne4 e5=) 13...Ne5 (13...Bd6 14.Nef3 dc4 15.dc4 Ra8=) 14.Bf3 (14.Ndf3 Ng6= 15.a4 e5=) 14...Qb8 (14...Neg4 15.Bg4 (15.g3= d4=) 15...Ng4=) 15.Nf1 (15.Qa4 Bd6=; 15.cd5 ed5=) 15...Nf3+= 16.Nf3 d4 (16...dc4 17.dc4 Bf3 18.gf3+=) 17.e4 Bd6 (17...Qc7 18.Bc1=) 18.Ng3 (18.Bc1 Ng4=) 18...Ng4 19.Bc1 f5 20.Nf1? (20.Qe2 fe4 21.de4 Rf8+=) 20...Qa8 (better is 20...fe4!? 21.de4 d3–+) 21.Ng5 Re8 22.f3 Nf6 23.Re1 fe4 (23...Qb8 24.Qf2+=) 24.fe4= Qb8 25.Qe2 Bf4 26.g3 (26.e5 Bg5 27.Bg5 Nd7=) 26...Bc1+= 27.Rac1 Qe5 28.Nh3 Rf8 (28...Ra8 29.Nd2+=) 29.Nd2= Rce8 30.Rf1 Rf7 31.Nf4 Qg5 32.Nf3 Qh6 33.Ne5 Rfe7 34.Rf2 Nd7?? (better is 34...Qg5 35.Nf3 Qh6=) 35.Ng4+– Qg5 36.h4 (36.h4 Qf5 37.ef5 ef5 38.Qd1 fg4 39.Qg4+–) 1–0. Bruno,Gerardo Damian – Habib,Carlos, It (Open) Villa Ballester, 2006.

11.Qc2 Rac8 12.cd5 ed5 13.a4 Rfe8 14.a5 Bd6 15.ab6 ab6=.

11.Qc2 Bd6 12.Qc3 Rae8 (12...a6 13.a4+=) 13.a4 (13.h3 a6=) 13...e5 (13...a5 14.h3=) 14.cd5 Nd5 15.Qb3 N7f6 (15...Nb4 16.e4+=) 16.Rfd1 (16.a5 h6+=) 16...Bc8 (16...a5 17.Nc4=) 17.Nc4 Will e5 fall? (better is 17.a5+=) 17...Be6 (better is 17...Bf5+=) 18.Nfe5?? (18.Nd6 Qd6 19.Be5+/– (19.Ne5? Ne3 20.Qc3 Nfd5–+)) 18...Nd7?? (better is 18...Ne3 19.fe3 Be5 20.Be5 Qe5–/+) 19.Nd6+– Qd6 20.Nc4 (20.d4 cd4 21.Nd7 Ne7+–) 20...Qe7 (20...Qc7 21.g3+–) 21.d4 (21.a5 f6+–) 21...N5f6 (21...cd4 22.Bd4 Rc8 23.Qa3+–) 22.Ba3 (22.Qa3 cd4 23.Bd4 Bc4 24.Bc4 Qa3 25.Ra3 Rc8+–) 22...Bd5 23.Bf3 (23.Qc2 Rc8+–) 23...Ne4 (23...Bf3!? 24.gf3 Qe6+/–) 24.Qc2+– Qf6?? (24...Qe6 25.dc5 Ndc5 26.Bc5 bc5 27.Na5+–) 25.Bb2 (better is 25.dc5 Ndc5 26.Bc5 (26.Rd5?! Qa1 27.Rd1 Qc3 28.Qc3 Nc3 29.Bc5 bc5+/–) 26...bc5 27.Rd5 Qa1 28.Rd1+–) 25...Qg5 (25...Qe6 26.Be2+/–) 26.dc5 (26.a5!? Re6+–) 26...Ndc5 27.Rd4 (27.a5 Re6+–) 27...Bc4 (27...Bb7 28.a5 Qg6 29.ab6 ab6 30.Ra7+–) 28.Qc4 (28.Re4?! Bd3 29.Rg4 Qg4 (worse is 29...Bc2 30.Rg5 f6 31.Rg4+/–) 30.Qc5 bc5 31.Bg4 Re4+=; 28.Be4?! Re4 29.Qc4 Rd4 30.Bd4 Ne6+/–) 28...Nf2 (28...Qf6 29.Re1+– (29.Re4 Qb2 30.Qd4 Qd4 31.Rd4 Nb3+=)) 29.Kf2 Qe3 30.Kf1 Re6? (better is 30...Nb3 31.Rad1 Nd4 32.Qd4 Qd4 33.Bd4 Rd8+–) 31.Qc3 (better is 31.Rg4 g6 32.Rd1 Rfe8+–) 31...Qh6 (31...Qc3 32.Bc3 Rh6 33.h4+–) 32.Rh4 Qg6 (32...Re3 33.Rh6 Rc3 34.Bc3 gh6+–) 33.Rg4 (33.Rg4 Qd3 34.Qd3 Nd3 35.Rg7 Kh8 36.Rf7 Nb2 37.Rf8 Kg7 38.Rc8+–) 1–0. Plantet,Marc (2075) – Chambourdon,Alain, St Quentin op 7th, 2004.

11.Qc2 Bd6 12.Rfe1 Rfe8 13.Bf1 h6 14.Bc3 a5 15.Qb2 Rad8 16.cd5 ed5 (worse is 16...Bd5 17.e4+/–) 17.g3 Ne5 18.Nh4 Bc8 19.d4 Neg4 20.dc5 Bc5 21.Nhf3 Nh5 (better is 21...Ne4!? 22.Ne4 de4+=) 22.Nb3+= Bd6 23.Rac1 Qe7 24.Rcd1 Ne5 25.Ne5 Be5 26.Be5 Qe5 27.Qe5 Re5 28.Nd4 Rde8 29.Rc1 R5e7 30.Rc6 Rb7 31.Rec1 Be6 32.Bg2 Nf6 33.Kf1 Ng4 34.Ke2 Ne5 35.Rc7 (35.Rd6+/–) 35...Re7? (35...Rc7 36.Rc7 Nc4 37.Kd1+/–) 36.Re7 (better is 36.Rb7 Rb7 37.f4 Bg4 38.Kd2+–) 36...Re7+= 37.Bf1 Rb7 38.Rc2 Kf8 39.Kd2 Ke8 40.f4 Ng4 41.Be2 Nf6 (41...Nh2? 42.Ne6 fe6 43.Ke1+–) 42.Bf3 g6 43.Rc6 Ke7 44.Kd3 Nd7 45.Nb3 (45.Ne6 fe6 46.e4 de4 47.Ke4 Rb8+=) 45...Nb8 (45...a4!? 46.Nd4 Nc5 47.Kc3 Bd7+=) 46.Rc1 Kd6 47.Kd4 f6 48.Rc3 Rg7 49.Nc1 h5 50.Nd3 Rh7 51.f5 gf5 52.Nf4 h4 53.Bd5 Bd7 54.gh4 Rh4 55.h3 (better is 55.Bc4 Rh2 56.Rd3+/–) 55...Rh7?? (55...Bb5 56.Rc8 Nc6 57.Bc6 Bc6 58.Rg8=) 56.Rc2?? (56.a4 Rh4+–) 56...Rh8? (56...Bb5 57.a3=) 57.Rg2?? (57.a4!? Rh4+–) 57...Be8? (57...Bb5 58.Rg6 Ke7 59.Rg1=) 58.Be6 (58.Rb2 Nd7+/–) 58...Bd7? (58...Bb5 59.Rd2+=) 59.Bf7 (59.Bc4 Be8 60.Bd3+–) 59...Be8?? (59...Bb5 60.Rb2 Bf1 61.Rb6 Nc6 62.Kc3+/–) 60.Be6 (60.Ng6!? Bc6 61.bc6 Nc6 62.Kc4 Ne5 63.Kb5 Ng6 64.Rg6 Ke7+–) 60...Bd7 61.Bf7 (61.Bc4 Be8+–) 61...Bc8? (61...Bb5 62.Rb2 Bf1 63.Rb6 Nc6 64.Kc3 Kc7+/–) 62.Rg8+– Rg8 63.Bg8 Bb7 64.Be6 Be4 65.h4 Ke7 (65...Nd7 66.Bd7 Kd7+–) 66.h5 (66.h5 Nd7 67.Bd7+–) 1–0. Nedev,Tanio (2130) – Nguyen Chi Minh (2435), Malakoff op, 2009.

11.Qc2 Bd6 12.h3 (12.cd5 ed5 13.Rfc1 a6=) 12...Rfe8 (12...a6 13.ba6 Ra6 14.cd5 ed5 15.Rfc1+=) 13.a4 a5 14.Rac1 Rad8 15.Qb1 (15.cd5 ed5 16.Rfe1 Rc8=) 15...Qb8 16.Rfe1 Ba8 17.Qa1 Qb7 18.Bf1 (18.cd5 ed5 (worse is 18...Nd5 19.Bg7 e5 20.Ne4+/–; 18...Qd5? 19.e4 Qb7 20.e5+–) 19.d4 c4=) 18...Bb8 (18...e5 19.d4 e4 20.Ne5 cd4 21.Nd7 Nd7 22.Bd4=) 19.d4= Qc7 (19...cd4 20.Nd4 Qc7 21.N4f3 dc4 A) worse is 22.Nc4 Bf3 23.Ne5 Qe5 24.Be5 Be5–/+ (24...Ne5?! 25.gf3 Nf3 26.Kg2+=); B) 22.Red1+=) 20.dc5 bc5 21.g3 (21.cd5 Bd5 22.e4 Bb7+=) 21...Qb6 22.Bg2 ½–½. Minaya,Juan M (2280) – Rodriguez Cespedes,Amador (2495), Bogota op, 1990.

11.Qc2 Rfd8 A) 12.Rfc1 Bd6 (12...a6 13.ba6 Ra6 14.cd5 ed5 15.d4 Raa8=) 13.a3 a6 14.ba6 Ba6 15.cd5 ed5=; B) 12.e4 Bd6 (12...de4 13.de4 a6 14.Rfd1 Bd6 15.Bd3 Bf4=) 13.ed5 ed5 14.d4 a6 15.ba6 Ba6+=; C) 12.a3 a6 13.ba6 Ra6 14.cd5 Nd5 15.d4 Ra7=.

11.Qc2 e5 12.a4 (12.cd5 Nd5 13.Rfb1 (13.Nc4 Bf6= 14.a4 a6 15.Qb3 Rfd8 16.ba6=; 13.e4 Nf4 14.Nc4 Bf6 15.a4 a6 16.Rfb1=; 13.Rfc1 Bd6 14.d4 ed4 15.ed4 Rfe8 16.Bd3=) 13...Bd6 14.Nc4 a6 15.ba6 Ba6 16.a4=) 12...d4 13.e4 (13.Nh4 a6= 14.Nf5 Rfe8 15.Bf3 Bf3 16.Nf3=) 13...h6 (13...Nh5 14.Rae1 Nf4 15.Bc1 Qd6 16.Nb3+=) 14.Nh4 Nh7 (14...a6 15.Nf5 Rfe8 16.Rfb1=) 15.Nf5 Bg5 16.Bc1 (16.Nf3 a6=; 16.a5=) 16...g6 17.Ng3 f5 (17...a6 18.Rb1=) 18.ef5 gf5 19.Bh5 (19.Bf3 a6=) 19...Ndf6 (19...a6 20.Bf3=) 20.Bf3 (20.Bg6 f4 21.Nf5+=) 20...e4 (better is 20...Bd2!? 21.Bb7 Qb7 22.Bd2 f4=) 21.de4+/– fe4 22.Nde4 Ne4 23.Be4 Be4 24.Qe4 Nf6? (better is 24...Bc1 25.Rac1 Ng5 26.Qg6 Qg7+/–) 25.Qg6+– Qg7 26.Qg7 Kg7 27.Bg5?? (better is 27.f4 Kg6 28.fg5 hg5 29.a5+–) 27...hg5+= 28.Rfe1 Rae8 29.Kf1 (29.Nf5 Kg6 30.Ne7 Kg7+/–) 29...Kg6 30.Re8 Re8 31.Re1 (31.h3 Nd7+=) 31...Re1 32.Ke1 Ng4 33.h3 (better is 33.Nf1!?=) 33...Ne5–/+ 34.Ne4 Nc4 35.g4 (35.g3 Kf5 36.f3 Ne3–/+) 35...Nb2 36.Nd6 (36.a5 Nd3 37.Kd2 c4+=) 36...Na4–+ 37.Nc8 c4 (37...Kf6 38.Na7 Ke6 39.f3–+) 38.Kd2 (38.Na7 Kf6 39.Nc6 d3–+) 38...Nc5 (38...Kf6 39.Nd6 c3 40.Kc2–+) 39.Na7 Ne4 40.Kc2?? (better is 40.Kc1 d3 41.f3–+) 40...d3 41.Kd1 c3 42.Nc8 (42.Nc6 Nf2 43.Ke1 d2 44.Kf2–+) 42...Nf2 43.Ke1 d2 44.Kf2 d1Q 45.Ne7 Kf6 (45...Kh7 46.Ng8 Kg8 47.Kg2 c2 48.h4 Qg4 49.Kf2 c1Q 50.hg5 Qcg1) 46.Nf5 c2 (46...c2 47.Nd6 Qd2 48.Kf3 Qf4 49.Kg2 c1Q 50.Ne4 Qe4 51.Kh2 Qd2 52.Kg3 Qed3) 0–1. Plock,Joerg – Wegan, active, 1999.

11.Qc2 e5 12.cd5 Nd5 13.Nc4 (13.Qb3 A) 13...Bf6 14.Ne4 (14.a4 h6 15.h3 Rae8 16.Rfd1 Ra8 17.Ne4 Be7 18.Rd2) 14...h6 15.Rac1 Rfe8 16.h3 Bd8 17.Rfd1 N7f6 18.Nfd2; B) 13...Rfd8 14.h3 (14.Rac1 h6 15.h3 Re8 16.Rfd1 Bd6 17.Ne4 N7f6 18.Nfd2) 14...h6 15.Nc4 Bf6 16.Nfd2 a6 17.a4 Nb4 18.Ne4; C) 13...h6 14.g3 (14.h3 Bf6 15.Ne4 Rfe8 16.Rfe1 Be7 17.d4 Nb4 18.dc5) 14...Bd6 15.e4 N5f6 16.Nc4 a6 17.a4 ab5 18.ab5; 13.a4 A) 13...a6 14.ba6 (14.Nc4 Nb4 15.Qb3 Bd5 16.Bc3 f6 17.h3 Be6 18.Rfc1) 14...Ra6 15.Qb3 Nb4 16.Rfc1 Qb8 17.d4 ed4 18.Ba6; B) 13...a5 14.Qb3 (14.Nc4 Nb4 15.Qb3 e4 16.Nfe5 ed3 17.Nd3 Bf6 18.Rad1) 14...Nb4 15.Nc4 Bd5 16.h3 f6 17.Nfd2 Be6 18.Bf3; C) 13...Nb4 14.Qc3 (14.Qb3 Bd5 15.Qc3 f6 16.e4 Bf7 17.Nc4 a6 18.h3) 14...a6 15.h3 h6 16.Nc4 Bf6 17.e4 Rfd8 18.Qb3; 13.h3 A) 13...Nb4 14.Qb3 (14.Qc3 a6 15.a4 h6 16.Nc4 Bf6 17.e4 Rfd8 18.Qb3) 14...a5 15.Nc4 e4 16.de4 Be4 17.Rfd1 Bc2 18.Qa3; B) 13...a5 14.Nc4 (14.a4 f5 15.Nc4 Bf6 16.e4 fe4 17.de4 Nb4 18.Qb3) 14...f6 15.a4 Rae8 16.Qd2 Rf7 17.Rfe1 Nb4 18.Red1; C) 13...a6 14.a4 (14.ba6 Ra6 15.a4 Rfa8 16.d4 ed4 17.ed4 R6a7 18.Bc4) 14...f5 15.Qb3 ab5 16.ab5 Kh8 17.Nc4 Bf6 18.Nfd2) 13...Bf6 (13...f6 14.Qb3 (14.a4 Nb4 15.Qb3 Bd5 16.Nfd2 a6 17.Bf3 Qb7 18.a5) 14...a5 15.a4 Rae8 16.Nfd2 Rf7 17.Bh5 g6 18.Bf3; 13...Nb4 14.Qb3 (14.Qd2 Bf6 15.a3 Nd5 16.g3 a6 17.e4 ab5 18.ed5) 14...Bf6 15.Nfd2 a6 16.a4 Bd5 17.Bg4 e4 18.Bd7) 14.Nfd2 (14.h3 a6 15.a4 h6 16.Qb3 Rfb8 17.Nfd2 ab5 18.ab5; 14.Qd2 a6 15.a4 h6 16.h3 Rfe8 17.Rfd1 Re6 18.Qc2) 14...Be7 (14...a6 15.a4 Rfd8 16.Ne4 Nb4 17.Qb3 Bd5 18.Qc3) 15.Qb3 (15.Bf3 a6 16.ba6 Ra6 17.Qb3 Bc6 18.a4) 15...N5f6 (15...a6 16.a4+= (16.ba6 Ra6 17.a4 Bc6 18.Bf3) 16...ab5 17.ab5 g6 18.Bg4; 15...h6 16.Bf3 a6 17.a4 Rfd8 18.g3) 16.a4 (16.Nf3 e4 17.Nfe5 Bd5 18.Rfd1) 16...e4 (16...h6 17.Bf3 Bf3 18.Nf3) 17.a5 (17.de4 Ne4 18.Ne4) 17...Rfd8 (17...ba5 18.f3) 18.a6 (18.f3+/–) 18...Bd5 (18...ed3 A) 19.ab7?! de2 20.ba8Q ef1Q (20...Ra8?? 21.Rfe1+–) 21.Nf1 Ra8=; B) 19.Bd3?! Bd5+/–; C) 19.Qd3 Bd5 20.e4+/–) 19.Qc2 (better is 19.de4 Ne4 20.Ne4 Be4 21.Rad1+/–) 19...Re8? (better is 19...ed3 20.Bd3 g6+=) 20.de4+– Ne4?? (better is 20...Bc4 21.Qc4 Ne5+–) 21.Bd3 (better is 21.Ne4 Nf6 22.Nf6 Bf6 23.Bf6 gf6 24.Qf5 Bc4 25.Bc4+–) 21...Nef6 (21...Nd2!? 22.Bh7 Kf8 23.Nd2 Bf6+=) 22.e4 Ng4 (22...Bc4 23.Nc4 (worse is 23.Qc4 Bd6=) 23...Bd6 24.Nd6 Qd6 25.Rad1+=) 23.f4 Be6 24.h3 Nh6 25.Ne3 (25.e5 g6+–) 25...c4 26.Ndc4 Bc5 27.Kh1 Rac8 28.Qe2 f6 (28...Be3 29.Ne3 Nc5 30.Bb1+–) 29.Rac1 Bf7 30.Nd2 (30.Bb1 Re7+–) 30...Qd6 (30...Qd8 31.Rf3+/–) 31.Nec4 (31.e5 fe5 32.Nec4 Qe6 33.fe5 Bg6+–) 31...Qc7 (better is 31...Qe6+–) 32.Nf3?? (better is 32.e5+–) 32...Nf5!–/+ 33.Qd2 (33.ef5 Re2 Pinning (33...Re2 Deflection)) 33...Ng3 34.Kh2 Nf1 (worse is 34...Ne4 35.Be4 Re4 36.Nd6+/–) 35.Rf1 (35.Bf1!? Rcd8 36.Bd3–/+) 35...Bf8 36.Rc1? (better is 36.Bd4!?–/+) 36...Nc5–+ 37.Nd4 0–1. Franke,Roland – Huber,Anton, Bahn–chT Fuessen (2), 1993.

11.Qc2 Rfe8 12.d4 (12.Rfc1 a6=) 12...cd4+= 13.ed4 (13.Nd4 Bd6 14.f4 Rac8=) 13...Rac8 (13...dc4 14.Rfc1+=) 14.Rac1 dc4 15.Qa4 (15.Qc4 Qd6 16.Qa4 Bd5=) 15...Qb8 (15...Qf4 16.Bc4 Rc7 17.Rc2+=) 16.Nc4= Nd5 17.Nfe5 (17.Nce5!? Nf4 18.Bd1 (18.Nd7? Ne2 19.Kh1 Rc1 20.Rc1 Qf4–+) 18...Ne5 19.de5+=) 17...Ne5 (17...Nf4 18.Bg4 Ne5 19.de5–/+) 18.Ne5 (18.de5 Nf4 19.Bg4 Ng2–/+) 18...Nf4 19.Rfe1 (19.Bg4 Bg2 20.Rc8 Qc8–/+) 19...Ng2 (worse is 19...Bg2 20.Rc8 Rc8 21.d5+=) 20.Red1 (20.Rc8 Rc8 21.Rc1 Rc1 22.Bc1 Bd6–/+) 20...Nf4–+ 21.Bf1 Bd5 22.Nc6 Qb7 23.Rc3 Bd6 24.Qc2 f5 (24...Kh8 25.Bc1–+) 25.Ba3 (25.Bc1 Qd7–/+) 25...Ba3–+ 26.Ra3 Bc6 27.bc6 Rc6 28.Qd2 (28.Ra7 Rc2 (worse is 28...Qa7 29.Qc6 Rd8 30.a4–/+) 29.Rb7 Ra8–+) 28...Qc7 29.Rf3 Nd5 30.Bb5 (30.Qe1 Re7–+) 30...Rc2 31.Qg5 (31.Qe1 Re7 32.Rd2 Rc1–+) 31...Rf8 (31...Qe7 32.h4 h6 33.Qg6–+) 32.Re1 (32.a4 Rc8–+) 32...Rf6 33.Qh5 (33.Rg3 f4 34.Rg2 f3–+) 33...Rg6 (33...Ra2 34.Qe8 Rf8 35.Qe6 Qf7 36.Qf7 Rf7 37.Bc4+–) 34.Rg3 Nf4 (34...Qf4 35.Be2 Nc3 36.Bf3–+) 35.Qh4 Rc1 Do you see the mate threat? 36.Rc1 (36.Rf1 Rf1 37.Bf1 Qd6–+) 36...Qc1 37.Bf1 Ne2 38.Kg2 Qc6 39.f3 Ng3 40.Qd8 (40.hg3 Qc2 41.Kg1 Qc7–+) 40...Kf7 41.hg3 h5 (better is 41...Qc2 42.Kg1 Rg3 43.Kh1 Qf2 (43...Qa2?! 44.Qc7 Kf6 45.Qe5 Kg6 46.Qg3 Kf7 47.Qc7 Kf6 48.Qe5 Kg5 49.Qg3 Kh6 50.Qh4 Kg6 51.Qg3 Kh5 52.Qh3 Kg5 53.Qg3 Kf6 54.Qe5 Kg5 55.Qg3=; 43...Rf3 44.Qd7 Kf6 45.Qd8 Kg6 46.Qe8 Kg5 47.Qe7 Kh5 48.Qf7 Kh4 49.Qe7 g5 50.Qh7 Kg4 51.Bg2 Qc1 52.Kh2 Qf4 53.Kg1 Rd3 54.Qh3 Rh3 55.Bh3 Kh3 56.a3 Qf3 57.d5 Qg2) 44.Qc7 Kg6 45.Qg3 Qg3–+) 42.Qb8 (42.Bd3 Qa4–+) 42...h4 (42...h4 43.Qa7 Kg8–+) 0–1. Hoelldorfer,August (1625) – Heigl,Rudolf (1970), Bayern–ch Seniors op, 1997.

11.d4 Rac8 12.Rc1 Qb8 13.a4 Rfd8 14.Qb3 Qa8 15.Rc2 cd4 16.Bd4 Bc5 17.Bf6 Nf6 18.Rfc1 Qb8 19.h3 h6 20.Qb2 Qd6 21.Qe5 Qe7 22.Nb1 Nd7 23.Qb2 f6 24.cd5 Bd5 25.Nd4 Bd4 26.ed4 Rc2 27.Qc2 Nf8 28.Qc3 Bb7 29.Nd2 Qd6 30.Nb3 Bd5 31.Nd2 Bb7 32.Nb3 Qf4 The isolani on d4 becomes a target 33.Rd1 Rc8 34.Qd2 Qd6 35.Ra1 (35.Qe3 Qb4+=) 35...Ng6 (35...Bg2 36.Kg2 Qd5 37.Bf3 Qb3 38.Bd1–/+) 36.Qe3 Bd5 37.Nd2 Nf4 38.Bf3 Bf3 39.Nf3 Nd5 40.Qe1 Re8 41.Rc1 Kf7 42.Rc6 Qa3 43.Rc4 Qd3 44.Qc1 Re7 45.Nd2 (better is 45.Rc8!?=) 45...Nf4–/+ 46.Kh2 Ne2 47.Qb2 Rd7 48.Rc8 Nd4 49.Qb4 Qd2 50.Qf8?? (50.Qd2 Nf3 51.gf3 Rd2 52.Rc7 Kg6 53.Kg3=) 50...Kg6–+ 51.Qe8 Kf5 (better is 51...Rf7!? 52.Qd8–+) 52.Qh5 Qg5 53.g4 Ke5 54.Qe8 (54.Qg5 hg5 55.Rc4–+) 54...Qf4 (54...Nf3 55.Kg2 Nh4 56.Kg3 Rd3 57.f3 Rf3 58.Kh2 Qf4 59.Kg1 Rf1) 55.Kh1 (55.Kg2 Qf3 56.Kh2 Qf2 57.Kh1 Qf1 58.Kh2 Nf3 59.Kg3 Qg1 60.Kf3 Qf1 61.Kg3 Rd3 62.Kh2 Rh3) 55...Qf3 56.Kg1 (56.Kh2 Qf2 57.Kh1 Qf1 58.Kh2 Nf3 59.Kg3 Qg1 60.Kf3 Qf1 61.Kg3 Rd3 62.Kh2 Rh3) 56...Ne2 (56...Ne2 57.Kh2 Qf2 58.Kh1 Rd1) 0–1. Poschmann,Hans – Jahr,Dieter (1960), Wch Seniors, 1998.

11.d4 cd4 12.ed4 Rac8 13.Rc1 Qb8 14.a3 Rfd8 15.Re1 Bd6 16.g3 Ne4 17.Ne4 de4 18.Nh4 e3 19.Bf3 ef2 20.Kf2 e5 21.Bb7 Qb7 22.Nf5 Bf8 23.d5 f6 24.Kf1 Nc5 25.Rc2 g6 26.Ne3 Bg7 27.Ng4 Rd6 28.Qf3 Qd7 29.Nf2 Na4 30.Qb3 Nb2 31.Qb2 f5 32.Qb3 e4 33.Nh3 Bh6 34.Nf2 Qc7 35.Rd1 Qc5 36.Qb4 Qc7 37.Nh3 ½–½. Kuhlmann – Nicolaes, corr 1989.

11.d4 Ne4 12.Rc1 (12.Ne4 de4 13.Nd2) 12...f5?! (12...Ndf6) 13.Ne5 Nd2 14.Qd2 Ne5 15.de5 Rad8 16.f4 dc4 17.Qc2? (17.Qc3) 17...Be4 18.Qc4 Bd5 19.Qa4 g5! 20.Bc4 Qb7 21.Bd5 Rd5 22.Qb3 (22.Rfd1) 22...gf4 23.Rf4 (23.ef4) 23...Kh8! 24.Qc3 (24.Qc2) 24...Rg8 25.Qc2 (25.g3) 25...Rd3 26.Rf5 Qe4! –+ (26...ef5? 27.e6!) 27.Rf2 Qe3 28.Kh1 Rgd8 29.Re2 Rd2! 0–1. Koller – Brandl, corr Austria 1985 (Adam).

11.cd5 Bd5 12.e4 Bb7=.

11.Re1 Bd6 12.g3 (12.cd5 ed5 13.Qc2 a6=) 12...e5 13.cd5 Bd5 14.Nc4 Rfe8 15.Nd6 Qd6 16.e4 (16.Qc2 a6 17.ba6 b5+=) 16...Bb7 (16...Be6 17.Qc2+=) 17.a4 (17.Nh4 a6+=) 17...a5 (17...a6 18.Qb3+=) 18.Qc1 (18.Nd2 Red8=) 18...h6 (18...Rad8 19.Nh4+=) 19.Nh4 (19.Nd2 Qe6=) 19...Nf8 (19...Rad8 20.f4=) 20.Nf5 (20.f4 N6d7=) 20...Qe6 21.Bf1 Rad8 22.Bh3 Kh7 (22...N6d7 23.f4=) 23.Kg2 Ng8?? (better is 23...Bc8 24.Ra3 Ng6=) 24.Ng7!+– Qf6 (24...Kg7 25.Be6) 25.Ne8 Re8 26.Bf5 (better is 26.f4+–) 26...Qf5+= 27.Re3 (27.f4 Ng6 28.fe5 Ne5 29.Be5 Qe5+=) 27...f6 (27...Qg6 28.Qc3+=) 28.Rf3 (28.f4 Ng6 29.Qc4 Re7+=) 28...Qg6 29.Qc4 (29.Kg1 Nd7–/+) 29...Ne6 30.Kf1 (30.Re1 f5 31.Kf1 fe4 32.de4 Ng5+=) 30...Qh5 31.g4 (31.Kg2 Ng5 32.Re3 f5–/+) 31...Qh2 (better is 31...Qg4 32.Rg3 Qh5–+) 32.Bc1?? (better is 32.Rg3!?–+) 32...Re7 (better is 32...Qh1 33.Ke2 Nd4 34.Qd4 ed4 35.Bb2–+) 33.Ke2?? (33.Rg3 Nd4 34.Be3 Qh1 35.Rg1 Qh3 36.Ke1 Nf3 37.Ke2 Ng1 38.Rg1–+) 33...Nd4 34.Ke3 (34.Qd4 ed4 35.Bf4–+) 34...Nf3 (better is 34...Qh1 35.Kd2 Qf3–+) 35.Kf3 Qh3 36.Ke2 Qg4 37.Ke1 h5 (37...Qg1 38.Ke2 Bc8 39.Bb2 Bg4 40.Ke3–+) 38.Qa2 (38.Qc3 f5 39.ef5 Qd4–+) 38...Qf3 (38...Rd7 39.Qc2–+) 39.Be3 Bc8 (39...Nh6 40.Rc1–+) 40.Kd2 Be6 41.Qb2 (41.Qc2 Rd7 42.Kc1 f5 43.ef5 Bf5–+) 41...Nh6 (41...Rd7!? 42.Ra3–+) 42.Kc3 (42.Rg1 Rd7 43.Kc3 f5–+) 42...Ng4 43.Re1 (43.Qd2 Ne3 44.Qe3 Qe3 45.fe3 h4–+) 43...h4 44.Qc1 h3 (44...Rd7 45.Qd1 Qd1 46.Rd1–+) 45.Rh1 Nf2 (45...c4 46.Qe1 Ne3 47.fe3 cd3 48.Qh4 Kg8 49.Rg1 Rg7 50.Rg7 Kg7 51.Qe1–+) 46.Bf2 (46.Rf1 Ne4 47.de4 Qe4–+) 46...Qf2 47.Qd1 (47.Qf1 Qf1 48.Rf1 Kg6–+) 47...Qd4 Black plans c4 48.Kd2 c4 49.Qh5 Kg7 50.Re1 (50.Qf3 Rd7 51.Ke1–+) 50...Qd3 51.Kc1 Do you see the mate threat? 51...Qc3 52.Kd1 (52.Kb1 Qe1 53.Kc2 Rd7 54.Qd1 Qd1 55.Kb2 Rd2 56.Kc3 Qc2) 52...Rd7 53.Ke2 Rd2 (53...Qd2 54.Kf3 Qg2 55.Ke3 Rd3) 54.Kf1 If White now only could play Re3... 54...h2 (54...Qg3 55.Qg6 Kg6 56.Re2 Rd1 57.Re1 Qe1) 55.Re3 Qe3 (55...Qc1 56.Re1 Qc2 57.Qh7 Kh7 58.Re2 Qd1 59.Kf2 Qe2 60.Kg3 Qg4) 56.Qg6 Kf8 Threatening mate... how? (56...Kg6) 57.Qf7 Kf7 (57...Bf7). Schmidt,Thomas – Volber,Uwe, Spree op, 1997.

11.h3 Rac8 12.Rc1 (12.Qa4 Ra8=) 12...Qb8 (12...e5 13.Qa4=) 13.Qb3 dc4 (13...e5 14.d4 ed4 15.ed4=) 14.Nc4+= (worse is 14.Rc4 Bd5–/+) 14...Rfd8 15.e4 (15.Qc2 Bd5+=) 15...h6 (15...Qf4 16.Rfd1=) 16.Rcd1 (16.Qa4 Rc7+=) 16...Nf8 (16...Qf4 17.Rfe1=) 17.Be5+= Qa8 18.Nfd2 (18.Qc2 Ng6+=) 18...Ne8 (18...Ng6 19.Bc3=) 19.Bg3 Ng6 20.Bh5 Nh8 21.Ne5 Nf6 22.Be2 Nd7 23.Nec4 Ng6 24.f4 (24.Nd6 Bd6 25.Bd6 Nde5 26.Be5 Ne5=) 24...Nf6 (24...Bf6 25.f5 Bd4 26.Kh2 ef5 27.Nd6+/–) 25.f5 ef5 26.Rf5 Rd7 27.Nf3 Rf8 28.a4 Qd8 29.Rf1 Bc8 Attacks the backward pawn on d3 30.Nfe5 Ne5 31.Be5 Rb7 32.R5f3 Be6 33.Qc3 Ne8 (33...Rd7 34.a5+=) 34.Rg3 (34.d4 cd4 35.Qd4 Bc5–+) 34...f6+= 35.Bf4 Kh7 36.Qc1 Nd6 37.Nd2 (37.Rgf3 Nc4 38.dc4 Qd4 39.Re3 Rd7=) ½–½. Noskowicz,Krzysztof – Sapierzynski,Tadeusz, corr 1AMM Poland, 1991.

11.h3 Rfd8 A) 12.Qb3 a6 (12...Bd6 13.cd5 Bd5 14.Qc3 Be7 15.a4 a6=) 13.Rfb1 ab5 14.Qb5 e5 15.Qb3 Bd6+=; B) 12.Qc2 a6 13.cd5 Nd5 14.ba6 Ra6 15.d4 Ra7+=; C) 12.Qa4 a6 13.Rfb1 Bd6 14.ba6 Ra6 15.Qc2 Rda8+=; D) 12.a4 a6 13.ba6 Ra6 14.cd5 Nd5 15.Qb3 Bc6+=; E) 12.cd5 Nd5 13.Qc2 a6 14.ba6 Ra6 15.d4 Ra7+=.

11.h3 e5 12.Qc2 (12.cd5 Nd5 13.a4 Bd6 14.Ne4 Rfd8 15.a5 ba5=) 12...Rfe8 (12...a6 13.ba6 Ba6 14.Nh4 Bb7 15.Nf5 Rfe8=; 12...Rfd8 13.Nh4 a6 14.Nf5 Bf8 15.e4 d4=; 12...d4 13.Nh4 a6 14.Nf5 Bd6 15.a4 Rfe8=; 12...Bd6 13.cd5 Nd5 14.Ne4 Rfd8 15.Rfd1 a6=) 13.cd5 Nd5 14.Qb3 (14.Rfc1 Bd6 15.Ne4 Nb4=) 14...Kh8 (14...Bd6 15.Ne4= (15.Nc4 a6=) 15...N7f6=) 15.Nc4 (15.a4 Bf6=) 15...f6 (15...Bf6=) 16.Nh4 g6 (16...a6 17.ba6 Ra6 18.Nf5=) 17.Nf3 Kg7 18.Rfc1 Rad8 (18...a6 19.a4=) 19.a4+= h6 20.Nfd2 f5 21.Bf3 Bf6 22.Na5 Nf8 23.Nb7 Qb7 24.a5 Ne6 25.ab6 ab6 26.Nc4 Ng5 27.Bd5 Qd5 28.Ra7 Nf7 (28...Kg8 29.Ra3 Re6 30.Rca1+=) 29.e4 Qe6 30.ef5 gf5 31.Rca1 Re7 32.Re7 Be7 33.Ra6 Rb8 34.Qc3 Bf6 35.Ra7 f4 36.Qe1 Rd8 37.Qe4 Rd7 38.Rd7 (38.Rb7 Rb7 39.Qb7 Kg6+–) 38...Qd7 39.Ne5 Ne5 40.Be5 Qb5 41.Bf6 Kf6 42.Qf4 Kg7 43.Qe5 Kg8 44.Qd5 Kg7 45.g4 Qb4 46.Kg2 b5 47.Qe5 Kg6 48.Qd6 Kg7 49.Qe7 Kg6 50.Kg3 ½–½. Pleschke,Helmut (1655) – Schilly,Hans Joachim (1905), IECG, 1999.

11.a4 a6

12.ba6 Ra6 13.cd5 ed5 14.Bf6 Bf6 15.d4 c4 16.Qc2+=.

12.ba6 Ra6 13.cd5 Nd5 14.e4=+.

12.ba6 Ba6 13.cd5 (13.Qc2 Bb7 14.Rfc1 Bd6 15.cd5 Nd5 16.d4=) 13...Nd5 14.Qb3 Rfd8 15.Rfb1 Bf6 16.Bf6=.

12.Qb3 Rfd8 13.Rfc1 a5 (13...Bd6 14.ba6 Ra6 15.Rcb1+=) 14.d4 (14.Qc3 e5=) 14...Rac8 15.Ne5 (15.Ba3 e5+=) 15...Ne5+= 16.de5 Nd7 17.f4 d4 (17...Nf8 18.e4+=) 18.Nf3= (worse is 18.ed4 cd4 19.Bd3 Nc5+=) 18...Nf8 (18...g5 19.Qd3=) 19.Rd1 (19.ed4 Bf3 20.Qf3 cd4=) 19...Ng6 20.Kf2 (20.g3 d3 21.Rd3 Be4+=) 20...Rd7 (20...f6 21.ef6 Bf6 22.Kg1+=) 21.g3 Rcd8 (21...de3 22.Kg1+=) 22.h4 (22.ed4!? cd4 23.Nd4=) 22...Bf8 (22...f6 23.h5 Nf8 24.ed4 cd4 25.Qd3+=) 23.Qd3 f6 (23...de3!? 24.Qe3 Ne7+=) 24.h5= fe5 25.Ng5 (25.ed4? e4 26.Qe3 ef3–+) 25...ef4? (25...e4 26.Qd2 de3 27.Qe3 Rd1 28.Bd1 Rd3 29.hg6 Re3 30.gh7 Kh8 31.Ke3 Qd7+/–) 26.ed4?? (better is 26.ef4 Re8 27.hg6+–) 26...fg3–/+ (26...fg3 27.Qg3 Nf4–/+) 0–1. Chirpii,Alexandru (2145) – Pavlovic,S Dejan (2345), Kishnev ULIM Cup, 2001.

12.cd5 A) 12...ed5 13.ba6 (13.Qb3 Bd6 14.Rfb1 ab5 15.ab5 Rfe8 16.Ra8=) 13...Ra6 14.Qc2 Qc6 15.d4 c4 16.Ne5=; B) 12...Nd5 13.Qb3 (13.ba6 Ra6 14.Qb3 Rfa8 15.d4 Ra5 16.Nc4=) 13...ab5 14.ab5 Bf6 15.Bf6 N5f6 16.Qc2=.

11.Qc2 a6

12.a4 e5 (12...Bd6 13.cd5 Nd5 14.Ne4=) 13.e4 (13.cd5 Nd5 14.Nc4 Bf6=) 13...d4+= 14.g3 (14.Rfb1 Qd6=) 14...Rfe8 (14...Ra7 15.Rfb1+=) 15.Rfe1 h6 16.Bf1 Nh7 (16...Qd6 17.Bg2+=) 17.Bg2 (17.Bh3 Nhf8+=) 17...Ndf8 (17...Ng5 18.Reb1+=) 18.Nf1 (18.a5 ba5 19.b6 Qd6+= (worse is 19...Qb6 20.Ne5 Rab8 21.Reb1=)) 18...Ng5+= 19.Qe2 (19.Ng5 Bg5 20.ba6 Ra6–/+) 19...Nf3 (19...Nd7 20.N1d2+=) 20.Bf3 (20.Qf3 Ne6+=) 20...Nh7 (20...Nd7 21.Nd2+=) 21.Bg2 (21.Nd2 Ng5+=) 21...Ng5 (21...Nf6 22.Reb1+=) 22.Bc1 Ne6 (22...ab5 23.Bg5 Bg5 24.ab5+=) 23.Bd2 Bg5 24.h4 (24.Reb1 Bd2 25.Nd2 Reb8=) 24...Bd2–/+ 25.Nd2 g6 (25...Ra7 26.Reb1–/+) 26.Nf3 (26.h5 Kg7+=) 26...Ng7 (26...Qd6 27.Reb1+=) 27.Nd2 (27.Qd2 Kh7+=) 27...Bc8 28.Bf3 (28.Reb1 Bd7+=) 28...Bd7 29.Nf1 (29.Bg4 Ne6+=) 29...Ra7–/+ 30.Ra2 (30.Qd2 Kh7–/+) 30...Rea8 31.Rea1 Qc8 (31...Qd6 32.Qd2–/+) 32.Qd2+= Kh7 (32...Qd8 33.ba6 Kh7 34.Bg2+=) 33.Nh2 (33.a5 ab5 34.ab6 Ra2 35.Ra2 Ra6–/+) 33...Ne8 (33...Be6 34.h5+=) 34.Qb2 (34.h5 Nd6+=) 34...Nf6 (34...Nd6 35.a5 ab5 36.ab6 Ra2 37.Ra2 bc4 38.Ra8 Qa8 39.dc4–+) 35.Qe2 (35.a5 ab5 36.ab6 Ra2 37.Ra2 Ra2 38.Qa2 b4+=) 35...h5 (35...Qc7 36.h5–/+) 36.Kg2 (36.a5 ab5 37.ab6 Ra2 38.Ra2 Rb8–/+) 36...Kg7 (36...Bh3 37.Kg1–/+) 37.Qd2 (37.a5 ab5 38.ab6 Ra2 39.Ra2 bc4 40.dc4 Bh3 41.Kg1 Nd7–/+) 37...Bg4 (37...Bh3 38.Kg1–/+) 38.Ng4 (38.Bg4 hg4 39.f3 gf3 40.Nf3 Ng4+=) 38...hg4 39.Be2 Qe6 (39...Qd7 40.a5 ab5 41.cb5=) 40.Qb2 (40.a5 ab5 41.cb5 Ra5 42.Ra5 Ra5 43.Ra5 ba5 44.Qa5 Qb3=) 40...Nh5 (40...Kg8 41.a5+=) 41.Qd2 Nf6 (41...f5 42.a5 ab5 43.cb5 fe4 44.de4+=) 42.ba6 (42.Qb2 Kg8+=) 42...Ra6+= 43.a5 Rb8 (43...Ra5 44.Ra5 ba5 45.Ra5 Ra5 46.Qa5=) 44.ab6 Rab6 45.Qg5 Rh8 46.Ra5 Rh5 47.Qc1 (47.Qd2 Nd7=) 47...Qc6 (47...Nd7 48.Ra7+=) 48.f3 ½–½. Melich,Jindrich (2150) – Vagner,Tomas (2140), CZE–chT2b, 2001.

12.ba6 Ra6 13.cd5 ed5 14.a3= Bd6 15.Rfc1 Rfa8+=.

12.ba6 Ra6 13.cd5 ed5 14.Rfb1=.

12.ba6 Ra6 13.cd5 ed5 14.Rfc1 Rfa8 15.a3 Bc6+=.

12.cd5 ed5 13.a4 Bd6 14.Rfc1 ab5 15.ab5 Rfe8=.

12.cd5 Nd5 13.a4=.

11.cd5 Nd5

12.a4 a6=.

12.a4 Bf6 13.Bf6 N7f6 14.Rc1 a6 15.d4 Rfc8=.

12.Qc2 Rfd8=.

12.d4 Rfc8 13.dc5 Nc5 14.Rc1 a6 15.a4 Qd8+=.

12.e4 Nf4 13.d4 a6 14.a4 Rfc8 15.Bc4 ab5+=.

12.Ne4 a6=.

11.h3 a6

12.a4 ab5 13.ab5 Ra1 14.Ba1 Ra8 15.Qc2 e5 16.Rd1 d4 17.e4 Nf8 18.Bb2 Ng6 19.Ra1 Qb8 20.Ra8 Qa8 ½–½. tjrm (2185) – Banoboy (2120), ChessWorld.net, 2003.

12.a4 Rfd8 13.cd5 Nd5 14.d4 Rdc8 15.Rc1 ab5=.

12.Qa4 ab5 (12...e5 13.Rfb1 ab5 14.Qb5 Bc6 15.Qb3 d4+=; 12...Rfd8 13.Rfb1 e5 14.ba6 Ra6 15.Qc2 Ra7+=; 12...Qd6 13.ba6 Ra6 14.Qb3 Rfa8 15.Rfb1 e5+=) 13.Qb5 Bc6 14.Qb3 e5 15.Rfb1 d4+=.

12.ba6 Ra6 13.Qb3+= dc4 14.dc4 e5 15.Rfd1 Bd6+=.

12.ba6 Ra6 13.d4+=.

12.Qb3 ab5 13.Qb5 dc4 14.dc4 Rfd8 15.Qb3 e5+=.

10.c4 Bd6

11.a4 Qc7 12.Qc2 Rfe8 13.a5 a6 14.ab6 Qb6 15.ba6 Ba6 16.Ra4 Bb7 17.Rb1 Ra4 18.Qa4 Qc7 19.Bd1 Ra8 20.Qc2 Ng4 21.h3 Ngf6 22.Qc3 h6 23.Bb3 Bc6 24.cd5 ed5 25.e4 de4 26.Ne4 Be4 27.de4 Re8 28.Bc2 Ne5 29.Rd1 Nf3 30.Qf3 Bh2 31.Kh1 Be5 32.Bc1 Bd4 33.Kg1 Qc6 34.Rd2 Qe6 35.Re2 Nd7 36.Bf4 ½–½. Naeter,Burkhard (2065) – Osinski,Jarek (1840), IECC, 2000.

11.Qc2 Qc7 12.h3 Ne5 (12...a6 13.a4 Rfd8 14.Bc3 h6 15.Qb2 Re8 16.Rfb1 a5 17.Rd1; 12...h6 13.a4 (13.Bc3 a6 14.a4 Rfd8 15.Qb2 Re8 16.Rfb1 a5 17.Rd1) 13...a6 14.Bc3 Rfd8 15.Qb2 Re8 16.Rfb1 a5 17.Rd1; 12...Rfe8 13.Bc3 (13.a4 a5 14.Bc3 h6 15.Rfd1 e5 16.cd5 Nd5 17.Bb2) 13...a6 14.a4 h6 15.Qb2 e5 16.cd5 Nd5 17.Ne4; 12...Rfd8 13.a4 (13.Bc3 h6 14.Qb2 a6 15.a4 Re8 16.Rfb1 a5 17.Ra2) 13...a6 14.Bc3 h6 15.Qb2 Re8 16.Rfb1 a5 17.Ra2) 13.Ne5 (13.Be5 Be5 14.Ne5 Qe5 15.a4 Qc7 16.a5 h6 17.Rfc1) 13...Be5 14.f4 (14.Be5 Qe5 15.a4 h6= (15...a6 16.a5 ab5 17.cb5) 16.a5 Qc7 17.Rfc1) 14...Bb2 15.Qb2 dc4 (15...Rfd8 16.Qe5 Rac8 17.Rac1) 16.Nc4 Bd5 (16...a6 17.a4) 17.Ne5 (17.Bf3=) 17...Nd7 18.Nd7 Qd7 19.a4 Qe7 (19...a5 20.Rac1=) 20.Bf3 (20.a5!?+=) 20...Bf3+= 21.Rf3 Rad8 22.Qc3 Qd6 (22...Rd6 23.Rf2+=) 23.Rd1 Rd7 24.Rf2 Rfd8 25.Rfd2 f6 26.d4 Qe7 27.Kf2 cd4 28.Rd4 Rd4 29.Rd4 Rd4 ½–½. Mroz,Antoni – Losos,Jan, corr Poland–Cup, 1986.

11.Re1 a6 12.ba6 Ra6 13.d4+=.

11.Re1 Qc7

12.cd5 ed5 13.a4 a6=.

12.cd5 ed5 13.Rb1 a6+=.

12.Bf1 dc4 13.Nc4 (13.dc4 Rad8) 13...Bf3 14.gf3 (14.Qf3 Bh2 15.Kh1 Bd6 (15...Ne5!) 16.Qc6!) 14...Bh2 15.Kh1 Be5 16.Ne5 Ne5 17.f4 Ng6 18.Qf3 Rad8 19.Be2 Rd5 20.Qh3 Rfd8 21.Rac1 Rf5 22.Rg1 Qd7 23.a4 e5?! (23...Qd5 24.e4 (24.Rg2 Qb3; 24.Kh2 Qb3) 24...Ne4 25.de4 Qe4 26.Bf3 Qf4) 24.Kh2 Qe6 (24...ef4 25.e4 Re5 26.Rg6 hg6 27.Be5; 24...h6 25.Rg6 fg6 26.Be5 Qe7 =+) 25.Rg5 Qa2 (25...Rg5 26.Qe6 fe6 27.fg5 Nd5) 26.Rf5 Qb2 27.fe5 (27.Re1 ef4) 27...Qc1 28.ef6 Qb2 29.Bf1 gf6 30.Qf3 Kg7 31.Qe4 (31.d4 cd4 32.Rf6 Ne5 33.Qf4 de3 34.Qg5 Ng6 35.Rg6 hg6 36.Qd8 Qf2) 31...Qb3 32.Kg1 Qe6 33.Qg4 (33.Qe6 fe6 34.Rh5 Ne5) 33...Rd5 34.e4 Rd4 35.Qg3 Ra4 36.Rh5 Ra1 37.Kg2 c4 38.dc4 Qe4 39.f3 Qc2 40.Kg1 Qc4 41.Qh3 h6 42.Qg2 Qd3 43.f4 Qd4 44.Kh2 Qf4 45.Kg1 Qd4 46.Kh2 Rd1 47.Rf5 Rd2 48.Be2 Qh4 0–1. Miles – Ribli, London 1984.

12.h3 a6 13.cd5 ab5 14.de6 fe6 15.Qb3=.

12.h3 a6 13.cd5 ab5 14.de6 fe6 15.e4=.

12.h3 a6=+ 13.cd5 ed5 14.a4 ab5 15.ab5 Ra1 16.Ba1 Ra8 17.Bc3 Ra3 18.Qc2 Ra7 19.Qb2 h6 20.Ra1 Ra1 21.Qa1 Ne8 22.Qc1 Nf8 23.d4 c4 24.Qb2 Nf6 25.Ne5 Ne6 26.Bb4 Bb4 27.Qb4 c3 28.Nb3 Ne4 29.Nc1 f6 30.Nf3 Kf7 31.Bd3+/– Bc8 32.Qb3 Nd2 33.Qd5 Nf3 34.Qf3+– Bd7 35.Qd5 Ke7 36.Qb3 c2 37.Bc4 Ng5 38.Qa3 Ke8 39.Bd3 Nf7 40.e4 Qf4+/– 41.Bc2 Qd2 42.Bd3 Qe1 43.Kh2 Qf2 44.Ne2 Ng5 45.Kh1 Qe1 46.Ng1 Qe3 47.Ne2 Kd8 48.e5 fe5 49.de5 Qe5 50.Qf8 Kc7 51.Qb4 Ne6 52.Bc4 Nc5 53.Nc3 g5 54.Qa3 Be6 55.Be2 Kd8 56.Kg1 Ke7 57.Kh1 Kf6 58.Qa1 Kg6 59.Qc1 Qg3 60.Bf3 Bh3–/+ 61.Ne4 Bg2 62.Bg2 Qh4 63.Kg1 Ne4 64.Qc2 Kf5 65.Qc8 Ke5 66.Qc7 Kd4 67.Qb6 Kd3 68.Qa7 Nc3 69.Bf1 Kd2 70.Qd7 Ke1 71.Qe7 Qe4–/+ 72.Qe4 Ne4 73.b6 Nc5 74.Kg2 Kd2 75.Kg3 Kc3 76.Bg2 h5 77.Bf3 g4 78.Bc6 Kb4 79.Kh4 Ka5 80.b7 Nb7 81.Bb7 ½–½. guest7611 – guest3372, ICC, 2005.

12.h3 Rad8 13.Bf1 (13.cd5 Bd5 14.e4 Bb7=) 13...dc4 14.Nc4 Bf3 (14...e5 15.Qa4=) 15.Qf3 Bh2 (15...Ne5 16.Ne5 Be5 17.Be5 Qe5 18.Be2=) 16.Kh1+= Ne5 17.Ne5 (17.Qe2 Nc4 18.Bf6 gf6 19.dc4 Be5+=) 17...Be5 18.Qe2 (18.Be5 Qe5 19.Be2 Rd7=) 18...Nd5 (18...Bb2 19.Qb2 e5 20.Be2=) 19.Rac1 Bb2 20.Qb2 Qd6 21.Rc4 (21.d4 cd4 22.Qd4 Rd7=) ½–½. Laber,Seweryn (2080) – Brzoza,Miroslaw (2200), corr 1AMM Poland, 1991.

12.h3 e5 13.cd5 Bd5 14.Nc4 Bc4 15.dc4 e4 (15...a6 16.Nd2=) 16.Nd2= Be5 (16...Bh2 17.Kh1 Be5 18.Be5 Qe5 19.Qa4=) 17.Be5 Qe5 18.Qc2 (18.Qa4 Rfd8=) 18...Rfd8 19.Rad1 Nf8 (19...a6 20.f3+=) 20.Nf1 (20.f3 a6=) 20...Ng6 (20...Qe6 21.Ng3=) 21.Ng3 h5 (21...Qe7 22.Bg4=) 22.a4 (22.Rd8 Rd8 23.Rd1 Rd1 24.Qd1 h4=) 22...h4 23.Nf1 Rd1 (23...Qe6 24.Rd8 Rd8 25.a5=) 24.Rd1 Qe7 (24...a6 25.Nh2=) 25.Nh2 (25.a5 Rd8+=) 25...Rd8 (25...Ne5 26.a5=) 26.Ng4 Rd1 (26...Nd7 27.a5=) 27.Bd1 (27.Qd1 Ng4 28.Bg4 Ne5=) 27...Ng4 (27...Nd7 28.Be2=) 28.Bg4 Qe5 ½–½. Mroz,Antoni – Ilczuk,Jacek, corr Poland–Cup, 1987.

7.0–0 d6

8.c4 c5 9.Nc3 Nbd7 10.a4 a6 11.d4 Ne4 12.Qc2 Nc3 13.Bc3 ab5 14.ab5 Qc7 15.Bb2 Bf6 16.Rfd1 cd4 17.ed4 d5 18.Rdc1 dc4 19.Qc4 Qc4 20.Rc4 Ra1 21.Ba1 Ra8 22.Rc1 Kf8 23.Ne5 Ne5 24.de5 Bg5 25.Rd1 Ra2 26.Bf1 Rd2 27.Rd2 Bd2 28.Bd4 Ba5 29.Bd3 h5 30.Be2 g6 31.f4 Bd5 32.Kf2 Ke7 33.g4 hg4 34.Kg3 Kf8 35.Kg4 Kg7 36.Kg5 Be4 37.h4 Bf5 38.h5 gh5 39.Kh5 Kh7 40.Kg5 Kg7 41.Be3 ½–½. Grund – Balthasar, 1987.

8.c4 (--> 6.c4 0–0 7.Be2 d6 8.0–0).

8.d3 a6 9.a4 Nbd7 10.Nbd2 (10.c4 A) 10...e5 11.d4 e4 12.Nfd2 ab5 13.ab5 Ra1 14.Ba1+=; B) 10...Nc5 11.Nc3 (11.Nbd2 Re8 12.Qc2 e5 13.d4 ed4 14.ed4=) 11...Qd7 12.Qc2 Rfe8 13.Rfd1 Ra7 14.d4=; C) 10...ab5 11.ab5 Ra1 12.Ba1 d5 13.Nbd2 c6 14.bc6=; D) 10...Ra7 11.Nbd2 (11.Nc3 Ne5 12.e4 c6 13.d4 Nf3 14.Bf3=) 11...e5 12.Qc2 Re8 13.d4 ed4 14.Bd4=; E) 10...Re8 11.Nc3 (11.e4 Nc5 12.Nc3 ab5 13.ab5 Ra1 14.Qa1=) 11...e5 12.d4 c5 13.bc6 Bc6 14.Nd5=; 10.e4 A) 10...c6 11.c4 (11.bc6 Bc6 12.c4 Nc5 13.Nc3 e5 14.Nd5=) 11...d5 12.bc6 Bc6 13.cd5 ed5 14.e5+=; B) 10...d5 11.e5 Ne8 12.d4 c6 13.bc6 Bc6 14.Ba3=; C) 10...e5 11.Nc3 (11.Nbd2 Qe8 12.Nb3 c5 13.Nbd2 Qd8 14.Nc4=; 11.Re1 Nc5 12.Nc3 ab5 13.ab5 Qd7 14.Qd2=) 11...c6 12.d4 ab5 13.ab5 Ra1 14.Ba1=; D) 10...Nc5 11.Nc3 (11.Qd2 c6 12.Nc3 Qc7 13.Rfb1 Rfc8 14.ba6=) 11...Qd7 12.Qd2 Rfd8 13.Rfb1 c6 14.e5=; E) 10...c5 11.bc6 (11.Nbd2 d5 12.ba6 Ra6 13.e5 Ne8 14.c3+=; 11.Qd2 d5 12.ba6 Ba6 13.Nc3 d4 14.Nb5=) 11...Bc6 12.Nd4 Bb7 13.c4 d5 14.ed5=; F) 10...Re8 11.Qd2 c6 12.bc6 Bc6 13.a5 b5 14.Rc1=) 10...Nc5 (10...e5 11.c4= (11.e4 Qe8 12.Nb3 c6 13.Qd2 ab5 14.ab5=) 11...c6 12.bc6 Bc6 13.d4 e4 14.Ng5=) 11.c4 (11.d4 Nce4 12.Bd3 Nd2 13.Nd2 Qd7 14.Qe2+=) 11...Ne8 (11...c6 12.Nd4 (12.Bf6 Bf6 13.d4= Nd7 14.ba6=) 12...cb5 13.ab5 ab5 14.Nb5=; 11...Re8 12.Qc2 e5 13.d4 ed4 14.ed4=) 12.Nd4 (12.d4 Nd7 13.Bd3 Nef6 14.Qc2+=) 12...Qd7 (12...Bf6 13.Qc2 Bd4 14.Bd4+=) 13.f4 (13.Bf3 A) 13...Nd3? 14.Bb7 Nb2 15.Qc2+–; B) 13...Bf3 14.N2f3+= (14.Qf3 Nf6+=); C) 13...d5 14.N2b3+=) 13...f5 (13...Bf6 14.Qc2=; 13...Nf6 14.Qc2=) 14.Qc2 (14.Bf3 Bf3 (14...Nd3? 15.Bb7 Nb2 16.Qc2 Nc4 17.Nc4+–) 15.Qf3 d5 16.cd5 ed5=) 14...Nf6 (14...Bf6 15.Bf3=) 15.h3 Rac8 16.Bf3 d5 (16...Bf3 17.N2f3 Ra8 18.Nc6+=) 17.g4 (17.a5 Ra8+=) 17...c6 (17...fg4!? 18.hg4 e5=) 18.bc6+= Bc6 19.Nc6 Qc6 20.gf5 Kh8 21.Kh2 ef5 22.Bf6 (22.cd5 Nd5 23.Rg1 Bf6 24.Bf6 Rf6+=) 22...Bf6 23.Bd5 Qe8 24.Rae1 Qa4 25.Qa4 Na4 26.d4 Nc3 27.Be6 (27.Bb7 Rce8+=) 27...Rce8= 28.d5 (worse is 28.Bf5 Bh4 29.Ra1 Rf5 30.Ra6 Bd8+=) 28...Rd8 (28...b5 29.e4 fe4 30.Ne4 bc4 31.Nc3 Bc3 32.Re4+=) 29.Ra1 (29.e4 fe4 30.Ne4 Ne4 31.Re4 g6+=) 29...Ne4 (29...a5!?=) 30.Ne4+/– Ba1 31.Ra1 fe4 32.Ra6 Rb8 33.Kg3 Rb7 (33...g6 34.Ra7+/–) 34.f5 (34.d6 g6 35.Bd5 Rbb8+–) 34...g6+/– 35.Kf4 gf5 36.d6 (36.Bf5 Rbf7–/+) 36...Kg7 37.Ke5 (37.Bf5 Rbf7–+) 37...Kg6 (37...b5!? 38.Bd5 Rbb8+/–) 38.Ra1+– 1–0. Paavilainen,Jorma – Niemi,Valio, corr FIN56, 1984.

8.d4 a6 9.a4 Nbd7 10.Nbd2 c5 11.c4 Qc7 12.Qc2 (12.Re1 Rfc8=) 12...e5 (12...cd4 13.Nd4 Rfc8 14.ba6 Ra6 15.Nb5=) 13.d5 Ne8 (13...Rfe8 14.Ne4=) 14.e4 g6 (14...Nef6 15.Rfb1+=) 15.Ne1 Ng7 16.f4 f5 17.fe5 Ne5 18.Nd3 ab5 (18...Bg5 19.Nf3 Nf3 20.Bf3 (worse is 20.Rf3 fe4 21.Rf8 Rf8+=) 20...Be3 21.Kh1 fe4 22.Be4+=) 19.ab5 Bf6 (19...Bg5 20.Nf3 Ra1 21.Ra1 Nf3 22.Bf3 fe4 23.Be4+=) 20.Ne5 de5 21.g3 (21.Ra8 Ra8 22.ef5 gf5+/–) 21...Qd6 (21...Ra1 22.Ra1 Qd6 23.ef5 gf5 24.Ra7+=) 22.Ra8 Ba8 (22...Ra8 23.g4 f4 24.Qc3+=) 23.Kg2 (23.ef5 gf5 24.Bd3 Bg5+=) 23...Bb7+= 24.Ra1 (24.ef5 gf5 25.Bd3 e4+=) 24...h5 (24...Bc8 25.Ra7=) 25.Ra7 Bc8 (25...Rf7 26.Qa4+=) 26.Bc1 (26.ef5 Nf5 27.Ne4 Ne3 28.Kg1 Bf5+/–) 26...h4 27.Nf3 (27.ef5 h3 28.Kg1 Qb8+=) 27...h3 (27...hg3 28.hg3 fe4 29.Nd2+=) 28.Kg1+= fe4 29.Ng5 (worse is 29.Qe4 Bf5 30.Qe3 e4–/+) 29...Bg5 30.Bg5 Qb8 31.Qa2 (31.Ra1 Qd6+/–) 31...Bb7 (31...Nf5!?+=) 32.Bg4 Nf5 (32...Bc8 33.Bh6 Bg4 A) 34.Bg7?! e3 35.Bf6 e2 (worse is 35...Rf6 36.Ra8 Qa8 37.Qa8 Kg7 38.Qa1=) 36.Rg7 Kh8 37.Rf7 Kg8 38.Rg7 Kh8 39.Rf7 Kg8 40.Rg7=; B) 34.Rg7 Kh8 35.Rg6+/–) 33.Bh3 Nd4 34.Be7 (better is 34.Be3!?+/–) 34...Rf7= 35.d6 Nf3 (35...e3 36.d7 Nf3 37.Kf1 Nh2 38.Kg1 e2 39.Qe2 Nf3 40.Kh1 Ne1 41.Rb7 Qb7 42.Kh2 Nf3 43.Qf3 Qf3 44.d8Q Kg7+/–) 36.Kh1 e3 Threatening mate... how? 37.Bg2?? (37.Rb7 Qb7 38.Be6 Nd4 39.Bd5 Qd5 40.cd5 Rf1 41.Kg2 Rf2 42.Qf2 ef2 43.d7+–) 37...Nh4 38.Rb7 (38.gh4 Rf1 A classical mating theme) 38...Qb7 The mate threat is Rf1 39.Qe2?? (39.Bb7 Deflection from f1 39...Rf1 The nicest combinations are those leading to) 39...Ng2–+ (39...Qg2?! 40.Qg2 Ng2 41.d7–+) 40.Qg2 (40.Kg1 Rf2 41.Qg4–+) 40...Rf1 0–1. Labahn,Thomas – Finkemeier,D, Luebbecke Stadtmeist, 1990.

8.d4 c5 9.dc5 dc5 10.Nbd2 Nbd7 11.a4 Nd5 12.Bd3 Bf6 13.c3 Rc8 14.Qc2+= g6 15.Rfd1 Ne5 16.Ne5 Be5 17.Nc4 Bg7 18.e4 Nf4 19.Bf1 Qc7 20.Nd6 Rcd8 21.Nb7 Qb7 22.g3 Nh5 23.Re1 Nf6 24.c4 Nd7 25.e5+/– Qc7 26.f4 Rfe8 27.Rad1 Nf8 28.Bg2 Rb8 29.a5 h5 30.Ra1 Red8+/– 31.ab6 ab6 32.Bc6 Nd7 33.Ra3 Nf8 34.Rea1 Rb7 35.Qe2 Nd7 36.Qf3 Rdb8 37.Bb7 Rb7 38.Qc6 f6 39.Qe6 Kh7 40.ef6 Nf8 41.Qd5 Bh8 42.Ra8 Bf6 43.Bf6 Qf7 44.Rf8! (44.Rf8 Qf8 45.Qb7 Kg8 46.Ra8 Qa8 47.Qg7#) 1–0. oldsage – yulio, ChessWorld.net, 2006.

8.d4 d5 9.c3 Nbd7 10.a4 c5 11.dc5 Nc5 12.c4 dc4 13.Bc4 Qc8 14.Ne5 Rd8 15.Qc2 Ncd7 16.Rd1 Ne5 17.Rd8 Bd8 18.Be5 Be7 19.Bd3 Qd7 20.Nd2 Rc8 21.Qb2 Qd3 0–1. Trkn – oldestchuck, itsyourturn.com, 2001.

8.d4 Ne4 9.Nfd2 f5 (9...Nd2 10.Nd2 a6 11.a4=) 10.f3 (10.Ne4 fe4 11.c4 a6=) 10...Nf6 11.c4 Nbd7 (11...c6 12.Nc3=) 12.Nb3 a5 (12...a6 13.Nc3=) 13.a4 Qe8 14.Nc3 Qg6 15.c5 (15.d5 e5=) 15...dc5 16.Bc4 Nd5 (16...Qf7 17.Rc1+=) 17.Bd5 ed5 (worse is 17...Bd5 18.Nd5 ed5 19.dc5 Nc5 20.Qd5 Kh8 21.Bd4=) 18.dc5 Nc5 (18...Bc5 19.Nc5 Nc5 20.Nd5+=) 19.Nd5 Bd5 (19...Bd6 20.Nc5 Bc5 21.Nc7 Be3 22.Kh1=) 20.Qd5 Qf7 (20...Kh8 21.Rfd1=) 21.Qf7 Rf7 22.Nc5 (22.Nd4 Re8=) 22...Bc5 23.Bd4 (23.Kf2 f4 24.Bd4 Bd4 25.ed4 Rd8=) 23...Bd4 24.ed4 Rd8 25.Rfd1 Kf8 (25...Rfd7 26.Rdc1=) 26.Rac1 Rd6 (26...Rd5 27.Kf2=) 27.Rc4 Ke8 (27...Rfd7 28.f4=) 28.d5 (28.Kf2 Rfd7=) 28...Rfd7 29.Rcd4 (29.Rc6 Rd5 30.Rd5 Rd5 31.Rc7 Kf8=) 29...Re7 (29...Kf7 30.Kf2=) 30.Kf2 Kd7 (30...g5 31.f4 g4 32.Rc1=) 31.R1d2 (31.f4 h6=) 31...g5 32.g3 Rh6 (32...Re8 33.Re2=) 33.Kg2 (33.h4 gh4 34.gh4 Rg6=) 33...Rd6 34.Rf2 Rh6 (34...Re5 35.f4 Red5 36.Rd5 Rd5 37.fg5+=) ½–½. Lammi,Jyri – Westerinen,Heikki MJ (2430), FIN–ch Helsinki, 1992.

8.d4 Nbd7

9.c4 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Qa8 13.Nc3 Ne4 14.Ne1 Qa5 15.Ne4 Be4 16.Nd3 Ra8 17.f3 Bb7 18.e4 Bf6 19.Qc1?? (better is 19.Nf2=) 19...Qa1!–+ 20.d5 (20.Qa1 Ra1 Combination) 20...ed5 (20...Qd4!? 21.Kh1–+) 21.cd5 Bd4 22.Kh1 Qc1 23.Rc1 Ra1 (23...Be3!? 24.Re1–+) 24.Ra1 Ba1 25.Nb4 Bc3 26.Na6 Kf8 (26...f5!? 27.Nc7 fe4 28.fe4–+) 27.Nc7 Ke7 28.g3 Kd8 29.Na6 Kc8 30.Kg2 Ba6 31.ba6 Kb8 32.f4 Nc5 33.Kf3 Bd4 34.Bc4 f6 35.g4 Ka7 36.h4 White plans g5 36...Na6 37.g5 Nc7 38.Kg4 b5 39.Bd3 Kb6 40.h5 Kc5 41.Kf5 fg5 42.Kg5 Bf6 43.Kf5 Kd4 44.Bb1 Be7 45.Ba2 b4 46.e5 Nd5 47.Ke6 (47.Bb3–+) 47...Nf4 48.Ke7 de5 49.h6 gh6 50.Kf6 Nd5 (better is 50...e4 51.Bb3–+) 51.Kf5 Nc3 52.Bb3 Nb1 53.Ba2 Nd2 (53...Nd2 54.Kg4 e4–+) 0–1. Jacobi,Karl Heinz (1920) – Gudat,Alfons (1835), GER–ch Seniors–A, 2008.

9.c4 a6 10.Qc2 A) 10...c6 11.bc6 Bc6 12.Nbd2 Rc8 13.e4 b5 14.e5=; B) 10...Be4 11.Bd3 Bf3 12.gf3 Qc8 13.e4 e5 14.Nd2=; C) 10...c5 11.bc6 (11.ba6 Ba6 12.Rd1 cd4 13.Nd4 Rc8 14.a4=) 11...Bc6 12.Nc3 Rc8 13.e4 b5 14.d5=; D) 10...ab5 11.cb5 Ra7 12.Nc3 Qa8 13.Rfc1 Rc8 14.Qd3=.

9.c4 a6 10.Nc3 ab5 11.cb5 c5 12.bc6 Bc6 13.Rc1 Ne4 14.Ne4=.

9.c4 Ne4 10.Nbd2 a6 11.Qc2 (11.Ne4 Be4 12.Nd2 Bb7 13.Qc2 ab5 14.cb5=; 11.a4 Nd2 12.Qd2 Nf6 13.Rfb1 Ne4 14.Qd3=) 11...Nd2 12.Nd2 ab5 13.cb5 Rc8 14.Bd3=.

9.c4 Ne4 10.Nbd2 f5 11.Nb3 Qe8 (11...a6 12.d5 ab5 13.de6 bc4 14.Bc4+=) 12.a4 Qg6 (12...a5 13.Ne1 Qg6 14.f3=) 13.a5 Ng5 (13...a6 14.ab6 cb6 15.ba6 Ra6 16.Ra6 Ba6 17.Qa1=) 14.a6 (better is 14.Ng5 Qg5 15.Bf3+=) 14...Be4? (better is 14...Nf3!? 15.Bf3 Be4+=) 15.Ng5+– Bg5 16.Bh5 (better is 16.f3!? Be3 17.Kh1+–) 16...Qh6+= 17.f4 Be7 18.Bf3 Nf6 19.Be4 Ne4 20.Nd2 g5 (20...Nd2 21.Qd2 Rac8 22.d5+=) 21.Ne4 fe4 22.Qg4 Qg6 23.d5 gf4 24.Qg6 hg6 25.ef4 Bf6 (25...ed5 26.cd5 Rae8 27.Rae1+=) 26.Bf6+/– Rf6 27.de6 (27.Rae1 ed5 28.cd5 Re8+/–) 27...Re8 (27...e3 28.Rf3 Re6 29.Kf1+=) 28.Rad1 (28.Kf2 Rfe6 29.Ke3 Rc8+=) 28...Ree6 (28...e3 29.Rfe1 Rfe6 30.g3=) 29.Rd4 Rf7 30.g3 Rfe7 (30...e3!?+=) 31.Kf2+/– Kf7 (31...e3 32.Ke2+/–) 32.Ke3+– Ke8 33.f5 (33.h4 Kd7+–) 33...Rf6+/– 34.Re4 (34.g4 gf5 35.Rf5 Rh6 36.Re4 Rh3 37.Kd4 Rh2 38.Re7 Ke7+–) 34...gf5 35.Re7 Ke7 36.Kf4 (36.h4 Rg6 37.Rf5 Rg3 38.Ke4 Rg4 39.Rf4 Rg1+/–) 36...Re6 (36...Rh6!?+/–) 37.Kg5+– Re4 38.Rf4 (38.Kf5 Rc4 39.h4 Rb4+/–) 38...Re2 39.h4 (39.Rf5?! Rh2 40.Kg6 Rg2 41.Rf7 Kd8+=) 39...Re3 40.Kf5 (40.Rf5?! Rg3 41.Kh5 Rc3+/–) 40...Rg3 41.h5 Kf7 42.h6 Rg6?? (better is 42...Rg8+–) 43.h7 Rf6 44.Kg5 Rf4 45.Kf4 Kg7 46.Ke4 Kh7 1–0. De Visser,Arno – van Doeland, 1988.

9.c4 Ne4 10.Nbd2 f5 11.Ne4 fe4 12.Nd2 (12.Ne1 Nf6= 13.Bg4 Bc8 14.Nc2=) 12...Nf6 13.Bg4 Bc8 14.Qc2=.

9.c4 Ne4 10.Nbd2 f5 11.Ne4 Be4 12.Nd2+= Bb7 13.Bf3 Bf3 14.Qf3 (worse is 14.gf3 a6+=) 14...Qe8 (14...a6 15.a4+=) 15.Qc6 (15.Qb7 Qc8 16.Qc6 a6+=) 15...Rc8 (15...a6 16.Qc7 Rc8 17.Qa7 ab5 18.cb5+=) 16.Qb7+/– Qg6 17.Qa7 (17.a4 f4 18.e4 e5+/–) 17...f4+= 18.Qa3 (18.ef4 Qc2 19.Bc1 Bf6=) 18...f3 19.g3 Qh5 20.Qa6 (better is 20.Kh1=) 20...Qh3 (better is 20...d5 21.Rac1 Nf6+=) 21.Nf3!+/– Ra8 (21...Rf3 22.Qb7 Double attack (22.Qc8 Deflection; 22.Qb7 Decoy; 22.Qc8 Overloading)) 22.Qb7+– Rab8 (better is 22...Rac8+–) 23.Qc7 Rf3 (23...Rbd8 24.Nd2 d5+–) 24.Qd7 Bg5 (24...Rf6 25.Qe7 Rh6 26.Rfd1+–) 25.d5 Bh6 (25...Bf6 26.Qd6 Rc8 27.Rfb1+–) 26.Qe6 Qe6 27.de6 Re8 (27...Kf8 28.g4+–) 28.Bd4 Re6 29.Bb6 d5 (29...Bg5 30.Bc7 Rf7 31.b6+–) 30.c5 Kf7 (30...g6 31.c6 Rf8 32.a4+–) 31.c6 Ke7 (31...g6 32.Rfc1 Re8 33.Bd4+–) 32.Rfc1 Rf8 (32...Kd6 33.c7 Re8 34.c8Q Rc8 35.Rc8+–) 33.Bc5 (33.Bc5 Kd8 34.Bf8+–) 1–0. DEFFM – guestUkraine, freechess.org, 2018.

9.c4 Ne4 10.Nbd2 Ndf6 11.Bd3 d5 12.Qc2 Rc8 13.Ne5 Nd2 14.Qd2 c5 15.bc6 Bc6 16.Nc6 Rc6 17.Rfc1 ½–½. Surikov,V (1865) – Ranby,Hans (1915), Stockholm Open, 2015.

7.c4

7.c4 (--> 6.c4 0–0 7.Be2).

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

6.Be2 a6

7.a4 ab5

8.ab5 Ra1 9.Ba1 0–0 10.0–0 d5 11.Bb2 c5 12.bc6 Nc6 13.Na3 Qb8 14.Qa1 Rc8 15.Nb5 Nb4 16.Be5+= Qa8 17.Bd6 Nc6 18.Qb2 Bd6 19.Nd6 Rd8 20.Ra1 Qb8 21.Nb7 Qb7 22.c4 h6 23.d4 dc4 24.Bc4 Qc7 25.Bd3 Nd5+= 26.Rc1 Nde7? 27.Ne5+– Rd6?? 28.Be4 Nd5 29.Qb5 Nde7 30.g3 f5 31.Bg2 g5 32.Nc6 Nc6 33.Bc6 Qa7 34.Qe5 Qe7 35.Bb5 Qd8 36.Ra1 (36.Ra1 Qe7 37.Ra8 Rd8 38.Bc4+–) 1–0. pcmvr (2645) – mic (2205), net–chess.com, 2007.

8.ab5 Ra1 9.Ba1 c6 10.0–0 0–0 11.c4 d5 12.d4 Nbd7 13.Qa4 Qc7 14.Bb2 Ra8 15.Qb3 dc4 16.Bc4 cb5 17.Bb5 Bf3 18.Bd7 Bg2 19.Rc1 Qd7 20.Na3 Ba3 21.Ba3 Bd5 22.Qb4 h6 23.Qd6 Qd6 24.Bd6 b5 25.Rc5 Ne4 0–1. Trkn – Caissa, itsyourturn.com, 2000.

8.ab5 Ra1 9.Ba1 d6 10.d4 Nbd7 11.0–0 Qa8 12.Nbd2 (12.Nc3 Qa3=) 12...g5 (12...0–0 13.c3=) 13.Ne1 (13.c4 g4 14.Ne1 h5=) 13...g4 (13...0–0 14.c4=) 14.d5 (14.c4 h5=) 14...Rg8 (14...Bd5 15.Bg4 Rg8 16.Bf3+=) 15.de6= fe6 16.Bc4 (16.f4 Qa4=) 16...Nc5 17.Nb3 (17.Bd4 Bd5=) 17...Nb3 (17...Nfe4 18.Nc5 Nc5 19.Be2=) 18.Bb3= Kd7 (18...Bd5 19.c4 Bb7 20.c5 bc5 21.Be6=) 19.Nd3 (19.f3 gf3 20.Nf3 Be4=) 19...Bg2 20.Nf4 Bf1 21.Be6 Ke8 (21...Kd8!? 22.Qf1 Rg5=) 22.Bf6+= Bf6 (22...Bb5?? 23.Nd5 (23.Bg8?! Bf6 24.Nd5 Qa1 25.Qa1 Ba1+=) 23...Bf6 24.Nf6 (24.Bg8?! Qa1 25.Qa1 Ba1+=; 24.Nc7?! Ke7 25.Na8 Ra8 26.Qg4 Ra1 27.Kg2 Bc6 28.e4 Ra5+–) 24...Kd8 25.Bg8+–) 23.Qf1 (23.Bg8 Bb5 24.Nd5 Bd8+=) 23...Rg7 24.Qc4 (24.Nh5!? Qa1 25.Ng7 Bg7 26.Qa1 Ba1 27.Bg4+=) 24...Be5+= 25.Nd5 (25.Bf5 d5 26.Nd5 Kf8 27.Qb4 Kg8=) 25...Qd8–/+ 26.Kf1 (26.Bg4? h5 27.f4 Rg4 (27...hg4?! 28.Qe4+=) 28.Kf1 Qh4 29.Nc7 Kf8 30.Ne6 Ke7–+) 26...h5 (better is 26...Kf8 27.Bg4 Qh4+=) 27.Nb4? (27.Qe4 Qg5 28.Qa4 Bh2 29.Qa8 Qd8 30.Nf6 Ke7 31.Nd5 Ke8 32.Nf6 Ke7 33.Nd5 Ke8=) 27...Qa8?? (27...Kf8 28.Qe4 Qe7–/+ (28...Bh2?? 29.Qf5 Ke8 30.Qh5 Ke7 31.Nc6 Ke6 32.Nd8 Kd7 33.Qh2+–)) 28.Nd5= Qd8 29.Ke2 (29.Nb4!?=) 29...Kf8 30.Qe4 (30.h3 Qe8 31.Bf5 Qf7 32.hg4 hg4 33.Bg4 Rg4 34.Qg4 Qd5 35.Qc8 Kf7 36.Qc7 Kg6+=) 30...Qg5–/+ 31.Qc4? (better is 31.h3 g3 32.fg3 Bg3 33.Qf3 Ke8 34.Kd3–/+) 31...Qd8 32.Nb4?? (better is 32.Qe4 Qg5 33.Qc4=) 32...Qf6–+ 33.Bd5 (33.Nc6 Bh2 34.Nd4 Re7–+) 33...Bh2 34.Nd3 (34.Na6 Qe5–+) 34...Re7 35.Kd2 (35.Qa4 Kg7–+) 35...Bg1 (35...Qf5 36.Qc6–+) 36.Ke2 g3! 37.fg3 (37.Qf4 Qf4 38.Nf4 Ke8 39.Nh5 gf2 40.Nf6 Kd8–+) 37...Be3 38.Qc6 (38.c3–+) 38...Bg5 39.Be4 Qd4 40.Nf2 (40.Kf1 Qe4 41.Qe4 Re4 42.Kf2–+) 40...Rf7 (40...Rf7 41.Qa8 Ke7–+) 0–1. Bogdanovich,Stanislav (2600) – Nouri,Hamed (2340), 7. HD Bank Cup, 2017. (=1.Nf3 Nf6 2.b4 b6 3.Bb2 Bb7 4.e3 e6 5.b5 Be7 6.Be2 a6)

7.c4 ab5

8.cb5 0–0 9.0–0 c5 10.a4 d5 11.d4 c4 12.Nc3 Nbd7 13.Nd2 e5 14.de5 Ne5 15.Nf3 Bd6 16.Re1 Re8 17.Qc2 Qe7 18.Nd4 Nfg4 (18...Bc8 19.h3=) 19.Bg4 (better is 19.Nf5!? Qe6 20.f4+=) 19...Ng4+= 20.h3 Nh6 21.Nf5?? (better is 21.Rad1=) 21...Nf5–+ 22.Qf5 d4 23.Nd5 Bd5 24.Qd5 c3 (24...c3 25.Bc1 Rad8–+) 0–1. Fournier,Frederic – COMP MChess 1.13, Partie Libre, 1995.

8.cb5 0–0 9.0–0 c6 10.a4 cb5 11.ab5 Ra1 12.Ba1 d6 13.Nc3 Nbd7 14.Nd4 Nc5 (14...Qa8 15.f3=) 15.Nc6+= Bc6 16.bc6 e5 (16...d5 17.Nb5+=) 17.d4+/– ed4 18.ed4 Nfe4?? (18...Nce4 19.Ne4 Ne4 20.f3+/–) 19.Ne4 (better is 19.dc5 Nc3 20.Bc3 bc5 21.Qd5+–) 19...Ne4+/– 20.f3 Nf6 21.d5 Ne8 22.Bd4 Bf6 23.Qa4 (23.Bf2!?+–) 23...Bd4+/– 24.Qd4 Nc7 25.Rb1 Qe7 26.Bf1 Re8 27.Rb6 Qe5? (better is 27...Nd5 28.Rb7 Nc7+=) 28.Qe5+– Re5 (28...de5 29.d6 Nd5 30.Rb7+–) 29.Rb8 Re8 30.Rb7 Rc8 31.Bc4 g6 32.g4 Kf8 33.Kf2 f6 34.Ke3 h6 35.h4 Ke8 36.Kd4 Kd8 37.Bd3 g5 38.hg5 hg5 39.Rb1 Ra8 40.Rb4 Ke7 41.Rb7 Kd8 42.Bc4 Kc8 43.Rb1 Ra4 44.Kc3 Ra8 (44...Ra5 45.Rd1+–) 45.Rb3 (45.Rh1 Ra3 46.Kd4 Kb8+–) 45...Kd8 46.Kd4 Kc8 47.Rb4 Kd8 48.Ke4 Ke7 (48...Kc8 49.f4+–) 49.Kf5 Kf7 (49...Ra5+–) 50.Rb7 Rc8 51.Ra7 Ke8 52.Kf6 Kd8 53.Kg5 Rb8 54.Rb7 Ra8 55.Kf5 (better is 55.Kf6!? Kc8 56.Ke7 Ra3 57.Kd6 Ne8 58.Kc5 Rc3+–) 55...Kc8 (55...Ra5 56.Ke4+–) 56.g5 Ra4 57.Bb3 Rd4 58.f4 Nd5 (58...Rd2 59.g6 Rf2 60.Kg5+–) 59.Bd5 (59.g6 Rf4 60.Kg5 Rf1 61.Bd5 Re1 62.g7 Rg1 63.Kf6 Kd8 64.Be6 Rf1 65.Bf5 Rf5 66.Kf5 d5 67.g8Q) 59...Rd5 60.Ke6 Rd4 61.f5 Rd2 62.Rd7 (better is 62.g6!? Re2 63.Kd6 Rd2 64.Ke7 Rg2+–) 62...Re2 63.Kf6 Re5 (63...Rc2 64.Rd6 Kc7 65.Re6+–) 64.g6 Rc5 (64...Re4 65.Kf7 Rc4 66.g7 Rc6 67.Ke7 Rc7 68.g8Q Kb7 69.Qd5 Kb6 70.Qb3 Kc6 71.Qc4 Kb7 72.Qc7 Ka6 73.Qb8 d5 74.Ra7) 65.Rd6 (65.g7 Rc6 66.Ke7 Rc7 67.g8Q Kb7 68.Qb3 Kc8 69.Qa4 Kb7 70.Qb5 Kc8 71.Qa6 Kb8 72.Qb6 Ka8 73.Qc7 d5 74.Qc8) 65...Kc7 66.Re6 1–0. Baeumcher,Karl – Steinhauser,Wilhelm, Bahn–chN Bad Laasphe, 1994. (=1.Nf3 Nf6 2.b4 e6 3.b5 b6 4.Bb2 Be7 5.e3 Bb7 6.Be2 a6 7.c4 ab5)

6.Be2 d5

7.0–0 c6 8.a4 c5 9.a5 0–0 (9...a6 10.ab6 Qb6 11.Nc3=) 10.a6+= Bc8 11.c4 dc4 12.Nc3 Nd5 13.Bc4 Nb4 14.Qb1 Bf6 (better is 14...Nd7!?+/–) 15.Qe4+– Nd7?? (better is 15...Bc3 16.dc3 Nd5+–) 16.Qa8 Qc7 17.Qe4 h6 18.Qb1 Ne5 19.Ne5 Be5 20.f4 Bf6 21.Rf3 e5 (21...Rd8 22.Ne4 Bb2 23.Qb2+–) 22.Ne4 Qe7 (22...Bh4 23.Be5 Qd8 24.Rg3 Bg3 25.Nf6 Qf6 26.Bf6+– (26.hg3?! Qf5+/–)) 23.fe5 Bg5 (23...Be5 24.Nf6! gf6 25.Qg6 Kh8 26.Qh6 Kg8 27.g4 Bh2 28.Kh2+–) 24.Nf6! gf6 25.ef6 Qd6 26.Qg6 (26.Qg6 Kh8 27.Qg7) 1–0. Janek – Larry, internet free game, 2017.

7.0–0 0–0

8.a4 a6 9.Nc3=.

8.a4 c6 9.c4 dc4 10.Bc4 cb5 (10...a6 11.d3=) 11.ab5 Nbd7 (11...a5 12.d3=) 12.Be2 (12.Qe2 Bd6=) 12...Nc5 (12...Qb8 13.d4=) 13.d4+= Nce4 14.Nbd2 Ne8 (14...Qd5 15.Ne4 Ne4 16.Ba3+=) 15.Ne4 Be4 16.Nd2 Bb7 17.Nf3 Nd6 (17...Be4!?=) 18.Ne5+= Bf6 19.Nc6 (19.Ba3 Re8+=) 19...Bc6 (better is 19...Qd7!?=) 20.bc6+/– Qc7 21.Bf3 (21.Qc2 Rfb8+/–) 21...Rfc8 (21...a5 22.Ba3=) 22.Qb3 g6 (22...a6 23.e4 Nb5 24.Rfd1+=) 23.Rfc1 (23.Ra6 Rcb8+/–) 23...b5 (23...a6 24.e4 Bg7 25.e5+/–) 24.e4 (24.Ra6 Rcb8+/–) 24...Bg5 25.Rc2 (better is 25.Rc5 Be7 26.Ra6+/–) 25...Qb6? (25...a6!?+/–) 26.d5 (26.Rc5 e5+–) 26...Re8 (better is 26...Nc4+/–) 27.e5+– Nc4 28.d6 Na5 29.Qd3 Rad8 30.Bd4 Qa6 31.g3 f6 32.Rca2 fe5 33.Be5 Qb6 34.Ra5 (34.Ra5 a6 35.Qc2+–) 1–0. Genne,Rene (1795) – Oster,Jean_Marie, Saint Denis RUF, 2012.

8.a4 Nbd7 9.a5 ba5 10.Ra5 c6 11.Ra1 cb5 12.Bb5 Qb6 (12...Nc5 13.Nc3=) 13.Ba3 (13.Nc3 Nc5 14.Rb1 Rab8+=) 13...Ba3 14.Na3 a6 (14...Rab8 15.Qe2=) 15.Be2 (15.Bd7 Nd7 16.Rb1 Qc7=) 15...Qc7 16.c3 (16.c4 Rac8=) 16...Rab8 17.Nc2 Qc8 (17...Ne4 18.Nfd4=) 18.Qc1 (18.Nb4 Nc5+=) 18...e5 (18...Ne4 19.Qa3=) 19.Qa3 (19.Nb4 Ne4+=) 19...Ra8 20.Rfb1 e4 (20...Ne4!?+=) 21.Nfd4+/– Nc5 (21...g6 22.Qb4 Rb8 23.Qd6+/–) 22.Qb4 (22.Nf5 Qf5 23.Qc5 Rfb8+/–) 22...Qc7 23.Ra5 Nfd7 24.Nb3 Rfb8? (24...Ne6 25.Ncd4 Rab8 26.Qa3+/–) 25.Ncd4?? (better is 25.Rc5 Nc5 26.Qc5 (26.Nc5? Bc8–+) 26...Qc5 27.Nc5+–) 25...Bc8 26.Qa3 Nb3 27.Rb3 Rb3 28.Nb3 Qb6 (better is 28...Qb7!?+/–) 29.Rd5+– Rb8 30.Bd1 (30.Bc4 Nf8 31.Rd6 Qc7+–) 30...g6 (30...Nf6 31.Rd6 Qc7 32.h3+/–) 31.h3 Kg7 32.Rd4 (32.c4 Qf6 33.Bc2 Ne5+–) 32...Nf6 33.Rb4 (33.Bc2 h6+–) 33...Qd6+/– 34.Be2 Rb4 (34...Nd5 35.Ra4 Qa3 36.Ra3+/–) 35.Qb4 Qb4 36.cb4 Nd7 37.Kf1 f5 38.Ke1 Kf7 39.Kd1 Ke7 40.Kc2 Kd6 41.Kc3 Bb7 (41...Nf6!?+/–) 42.Na5+– Bc8 43.Bc4 (43.Kd4 Kc7+–) 43...Ne5 44.Be2 Nc6?? (44...Nd7 45.Kd4 Kc7+–) 45.Nc6+– Kc6 46.Kd4 Kd6 (46...Kb6 47.Bc4+–) 47.Bc4 h6 48.h4 (48.g3 g5+–) 48...g5? (48...Bb7 49.g3+–) 49.g3 (49.hg5 hg5 50.g4 fg4 51.Ke4 Kc6+–) 49...gh4 (49...Bb7 50.d3+–) 50.gh4 Bb7 51.Bf7 (51.d3 ed3 52.Bd3 f4+–) 51...Bc8 (51...Bc6 52.Bb3+–) 52.d3 ed3 53.Kd3 Ke5 (53...Ke7 54.Bd5+–) 54.f4 Kf6 55.Bd5 Kg6 56.Bf3 Bd7 57.Kd4 Kf6 (57...Bb5 58.Ke5+–) 58.Be2 1–0. Lickl,Norbert (1830) – Friesacher,Wolfgang, Austrian STMK SUED, 2015.

8.a4 Nbd7 9.d3 c5 10.c4=.

8.a4 Nbd7 9.d3 Nc5 10.Nbd2 Bd6 (10...a6 11.Bf6 Bf6 12.d4=) 11.Ne5 (11.a5 ba5 12.c4 dc4 13.Nc4 a6=) 11...Be5 (11...a6 12.c4=) 12.Be5+= Qe7 (12...Ncd7 13.f4+=) 13.Bb2 (13.a5 c6 14.a6 Bc8+/–) 13...Rfe8 (13...a6 14.d4 Nce4 15.Ne4 Ne4 16.Ba3+=) 14.Ba3 (14.a5 e5+=) 14...Qd7 (14...e5 15.a5=) 15.Bb4 (15.c4 d4+=) 15...d4 (15...e5 16.c4=) 16.e4 (16.Bf3 Bf3 17.Qf3 a6=) 16...e5 (16...c6 17.Bc5 bc5 18.Nc4=) 17.c3 (17.f4 ef4 18.Bc5 bc5 19.Rf4 c6=) 17...a5 (17...a6 18.Bc5 bc5 19.ba6 Ba6 20.Qc2=) 18.Bc5+= bc5 19.c4 (19.Nc4 dc3 20.Qc2 Qd4+=) 19...Qd6= 20.Nb3 Nd7 (20...Qb6 21.f4+=) 21.Qd2+= Attacks the isolani on a5 21...Qb6 22.f4 Bc8 (22...c6 23.Rac1+=) 23.Bg4 f6 24.f5 (24.Bf5 c6+=) 24...Bb7 25.Bh5 Re7 26.Rf3 c6 27.Rg3 (27.Rc1 Ra7=) 27...cb5= 28.ab5 Pawn a5, live or die! (28.cb5 c4 29.dc4 Be4=) 28...a4+= 29.Nc1 Qa5 Black intends a3 30.Qa5 Ra5 31.Bd1 Attacks the isolani on a4 (better is 31.Ra3=) 31...Nb6 (better is 31...a3+=) 32.Nb3!+/– Ra8 (32...ab3 A pinning theme 33.Ra5) 33.Nc5+– a3 34.Rf3 (34.Nb7 Rb7 35.Bb3 Raa7 36.c5 Kf8 37.cb6 Rb6+–) 34...Rc7? (better is 34...Bc8!?+/–) 35.Nb7 (35.Ne6!? Rf7+–) 35...Rb7 36.Bb3 Kf8 (36...Nd7 37.c5 Kf8 38.c6 Rb5 39.Bc4+–) 37.c5 Nc8 (37...Raa7 38.cb6 Rb6+–) 38.Bd5 Rba7 (38...Rbb8 39.Ba8 Ra8 40.Rff1+–) 39.Ba8 (better is 39.b6!? Ne7 40.ba7 Ra7+–) 39...Ra8 40.Rf2 Ra5 41.b6 Rb5 (41...Ne7+–) 42.Rfa2 (42.Ra3 Ne7+–) 42...Ne7 43.Ra3 Nc6 (43...g6 44.Ra5 Rb3 45.g4+–) 44.Ra8 Ke7 45.R1a7 (better is 45.R8a7 Kf8 46.Rc7 Na5+–) 45...Na7 46.Ra7 (46.ba7 Rc5 47.Re8 Ke8 48.a8Q Kd7+–) 46...Kd8 47.Rc7 (better is 47.Rg7 Kc8 48.Rh7 Rc5 49.Rc7 Rc7 50.bc7 Kc7+–) 47...Rb3 (47...Rb1 48.Kf2 g5 49.Rh7+–) 48.Rg7 Rd3 (48...Kc8 49.Rh7 Rc3+–) 49.c6 Rc3 50.c7 (50.b7 Rc1 51.Kf2 Rc2 52.Kg3 Rc3 53.Kh4 Rc6 54.b8Q Rc8 55.Qd6 Ke8 56.Qe7) 50...Kc8+– 51.Rg8 Kb7 52.Rb8 (52.Rb8 Ka6 53.c8Q Rc8 54.Rc8 Kb6 55.Rf8+–) 1–0. Schmidt,Thomas – Hennings,Dirk, Spree op, 1997.

8.a4 Nbd7 9.Bd4 a6=.

8.c4 c6 9.d3 cb5 10.cb5 a6 11.a4 a5 12.Nbd2 Nbd7 13.d4 Rc8 14.Qb3 Re8 15.Rac1 Nf8 16.Ne5 Rc1 17.Rc1 Bb4 18.Ndf3 N8d7 19.Nc6 Qa8 20.Nb4 ab4 21.Qb4 Rc8 22.Ra1 Qb8 23.a5 ba5 24.Ra5 Nb6 25.Ra3 Nc4 26.Rc3 Ne4 27.Rc2 Ned6 28.Ne5 Ba6 29.Bc4 dc4 30.b6 Bb5 31.Ba3 Rd8 32.Qa5 Qa8 33.Qa7 Qe4 34.Rc1 Nb7 35.Nc4 Rc8 36.Nd2 Rc1 37.Bc1 Qd5 38.e4 Qc6 39.Qa8 Qe8 40.Qb7 h6 41.Qc7 Ba6 42.b7 Qb5 43.b8Q 1–0. W Labahn – Fricke, 1981.

8.d3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.Nc3 cb5 13.Nb5 Bc6 14.Nfd4 Bd7 15.f4 Nc6 16.Qe1 Nd4 17.Nd4 Qc7 18.Bf3 Bc5 19.Qg3 h6 20.Bb2 Ra8 21.Nf5 ef5 22.Bf6 Bf8 23.Bd5 Ra6 24.c4 b5 25.Be5 Qc5 26.Rb1 Rg6?? 27.Qg6 Qe3 28.Kh1 Be8 29.Qf5 bc4 30.Be4 Bc5 31.Qh7 Kf8 32.Qg7 Ke7 33.Rb7 Kd8 34.Qf6 Kc8 35.Rb8 Kd7 36.Bc6# 1–0. kamret (2230) – AndyMakeyev (1985), GameColony.com, 2003.

8.d3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.Nbd2 (12.Qd2 Bd6=) 12...Qa8 (12...Bb4 13.Bb2=) 13.c4 (13.Bc3 Qa4 14.Qb1 Ra8=) 13...Qa3 (13...Qa2 14.cd5 Nd5 15.g3+=) 14.Qb3 (14.Qc2 Ra8=) 14...Ra8 (14...Qb3 15.Nb3 dc4 16.dc4+=) 15.Qa3 Ra3 16.Bb2 (16.cd5 Nd5 17.d4 g5+=) 16...Ra2 17.Rb1 Nc5 18.Bd4? (18.Bf1+=) 18...Na4?? (better is 18...dc4 19.Bf1 Nd3 20.Nc4 Nf2–+) 19.Ra1 (19.Bd1 Nc5 20.Be2 dc4–+) 19...Ra1+= 20.Ba1 Bb4 21.d4 (21.cd5 Bc3 22.Bd1 Ba1 23.Ba4 Nd5+=) 21...Bc3 22.Bc3 (22.Bd1 Ba1 23.Ba4 dc4 24.Nc4 Ne4–/+) 22...Nc3–/+ 23.Bf1 (better is 23.Kf1 dc4 24.Nc4 Nb5 25.Nb6 Nd4 26.Nd4 cb6 27.f3–/+) 23...c6 (better is 23...dc4!? 24.Bc4 Ne8–/+) 24.bc6 Bc6 25.Ne5 Bb7 (25...Ba4 26.c5 bc5 27.dc5=) 26.Ndf3 (26.c5!?+=) 26...dc4+= 27.Bc4 b5 28.Bb3 Bd5 (28...Nfe4 29.Kf1=) 29.Bd5 Nfd5 30.Nd2 (30.Kf1 f6 31.Nd3 Kf7=) 30...f6 (30...Nb4 31.Nd7+=) 31.Nd3 (31.Nc6 Kf8=) 31...Na2 (31...Kf7 32.Kf1=) 32.Nb3 (32.Ne4 Kf8=) 32...Kf7 33.Kf1 Ke7 (33...Nab4 34.Nbc5=) 34.Ke1 Kd6 35.Kd2 e5 (35...Nab4 36.Ndc5=) 36.de5 (36.e4 Ndb4=) 36...fe5 37.e4 Ndb4 38.g3 (38.Nbc5 Nc6=) 38...Nc6 (38...Nd3 39.Kd3 g5 40.Nd2=) 39.f4 Nab4 (39...b4 40.f5=) 40.fe5+= Ke6 41.Nbc5 (41.Nb4 Nb4 42.Nd4 Ke5+=) 41...Ke7 42.Nb4 Nb4 43.Kc3 (43.Ke3 Nc6+=) 43...Nc6= 44.e6 (44.h3 Ne5 45.Kd4 Kd6 46.Nb7 Ke6 47.Nc5 Kd6 48.Nb7 Ke6 49.Nc5 Kd6=) 44...Kd6 45.Nd7 (45.Na6 Ke6 46.Nc7 Ke5 47.Nb5 Ke4 48.Nd6 Kf3+=) 45...h6 46.Nf8 Ke7 (46...g5 47.h4=) 47.Ng6 Ke6 48.g4 (48.Nh4!?=) 48...Kf6–/+ 49.Nf8? (49.Nh4 Kg5 50.Nf5 g6–/+) 49...Ke5 (49...b4!? 50.Kc4 Ne5 51.Kb4–+) 50.Kd3 (50.g5 hg5 51.Kd3–+) 50...b4 (50...g5 51.Nd7 Ke6 52.Nc5 Kd6 53.Nb7 Kc7 54.Nc5 Ne5 55.Ke2 Ng4 56.h3–+) 51.Nd7 (51.h3 Kf6 52.g5 Kg5 53.Ne6 Kh4 54.Ng7 Kh3–+) 51...Kf4 (better is 51...Kd6 52.Nb6 Ne5 53.Kc2 Ng4–+) 52.h3?? (better is 52.Nc5–/+) 52...Ne5–+ 53.Ne5 (53.Kd4 Nd7 54.Kc4–+) 53...Ke5 54.h4 (54.g5 hg5 55.Ke3–+) 54...b3 55.Kc3 Ke4 56.Kb3 Kf4 57.g5 h5 58.g6 Kg4 59.Kc4 Kh4 60.Kd5 Kg5 61.Ke4 Kg6 62.Kf3 Kf5 63.Kg3 (63.Kf2 g5 64.Kg3 h4 65.Kf3 g4 66.Ke3 Ke5 67.Kd2 h3 68.Kd3 g3 69.Kc4 g2 70.Kc3 g1Q 71.Kd3 h2 72.Kc4 Qd4 73.Kb5 h1Q 74.Ka6 Qc6 75.Ka5 Qd2) 63...g5 64.Kf3 (64.Kh3 h4 65.Kh2 g4 66.Kg2 Kf4 67.Kf2 g3 68.Kf1 h3 69.Ke2 h2 70.Kd1 h1Q 71.Kd2 g2 72.Kc3 g1Q 73.Kc2 Qc5 74.Kb3 Qg2 75.Ka4 Qgc2) 64...g4 65.Kg3 (65.Ke3 h4 66.Ke2 h3 67.Ke3 g3 68.Kd4 g2 69.Kc4 g1Q 70.Kc3 h2 71.Kc4 h1Q 72.Kc3 Qc5 73.Kb3 Qg2 74.Ka4 Qgc2) 65...Ke4 66.Kf2 (66.Kg2 h4 67.Kf2 g3 68.Ke1 h3 69.Ke2 Kf4 70.Ke1 h2 71.Kd1 h1Q 72.Kd2 g2 73.Kc2 g1Q 74.Kb2 Qd4 75.Kb3 Qg2 76.Ka3 Qgb2) 66...h4 67.Kg2 (67.Ke2 g3 68.Kf1 h3 69.Ke2 Kf4 70.Ke1 h2 71.Kf1 h1Q 72.Ke2 Qd5 73.Kf1 Qd2 74.Kg1 Qe2 75.Kh1 Qh2) 67...g3 68.Kg1 (68.Kf1 Kf3 69.Ke1 g2 70.Kd2 g1Q 71.Kc3 Qc5 72.Kb2 h3 73.Kb3 h2 74.Ka2 Qb4 75.Ka1 h1Q 76.Ka2 Qhb1) 68...Ke3 (68...Kf3 69.Kf1 g2 70.Ke1 g1Q 71.Kd2 Qc5 72.Kd3 h3 73.Kd2 Qc4 74.Kd1 Ke3 75.Ke1 Qe2) 69.Kh1 (69.Kg2 Kf4 70.Kf1 h3 71.Ke2 h2 72.Kf1 h1Q 73.Ke2 Qd5 74.Kf1 Qd3 75.Kg1 Qe2 76.Kh1 Qh2) 69...Kf3 70.Kg1 h3 Black intends g2 71.Kh1 (71.Kf1 g2 72.Ke1 g1Q 73.Kd2 h2 74.Kc3 Qc5 75.Kd3 h1Q 76.Kd2 Kf4 77.Kd3 Qd1) 71...Ke2 (71...g2 72.Kg1 h2 73.Kh2 Kf2 74.Kh3 g1Q 75.Kh4 Qg6 76.Kh3 Qg3) 72.Kg1 g2 73.Kh2 Kf1 (73...Kf1 74.Kg3 g1Q 75.Kf4 h2 76.Ke4 h1Q 77.Ke5 Qc5 78.Kf4 Qh4 79.Kf3 Qc3) 0–1. Starr,Albert Martin – Sowell,Nelson (1700), San Francisco Konig mem g/45, 2006.

8.d3 Nbd7 9.c4 dc4 10.dc4 Bd6 11.Nbd2 Nc5 12.Qc2 Nce4 (12...a6 13.Ng5 e5 14.f4=) 13.Rfd1 Nd2 14.Rd2 Qe7 15.Nd4 (15.Rad1 a6+=) 15...Ne4= 16.Bf3 Nc5 (16...f5!?=) 17.Bb7+= Nb7 18.Nc6 Qe8 (18...Qh4 19.Be5+=) 19.e4 Nd8 20.e5 Bc5 21.Nd4 Qe7 (21...c6 22.Qe4+=) 22.Qe4 Rb8 23.Rad1 Bd4 24.Rd4 Nb7 25.Qe3 Nc5 26.Ba3 Rfd8 27.Bc5 bc5 28.Rd8 Rd8 29.Rd8 Qd8 30.g3 h6 (30...Qd4 31.Qd4 cd4 32.f4+/–) 31.Kg2 (31.Qc5 Qd1 32.Kg2 Qe2+–) 31...Qd1 (31...Qd4 32.Qd4 cd4 33.f4+–) 32.h3 (32.Qc5 Qe2+–) 32...Qc2 (32...Qd4!? 33.Qd4 cd4+–) 33.Qc5+– Qe4 34.Kh2 Qe2 35.a4 Qa2 36.Qd4 (36.Kg2 Qa4 37.Qc7 Kh7+–) 36...Qa4 37.Qd8 Kh7 38.Qc7 Qc2 (38...Kg6 39.Qc5+–) 39.Qc5 (39.Qa7 Qc4 40.Qf7 Qd4+–) 39...Qa2 40.Qd4 Qa4 (40...Qe2 41.Qa7 Qc4 42.Qf7 Qb5 43.Qe6+–) 41.Qd3 Kg8 42.c5 Qb4 (42...Qa5+–) 43.c6 Qc5 44.Qe3 (44.Qd8 Kh7 45.Qd2+–) 44...Qb5 45.c7 Qa6 (45...Qc6 46.Qa7 Kh7+–) 46.Qc5 Qf1 (46...Kh7 47.Qc2 g6+–) 47.c8Q Kh7 48.Qe3 (48.Qc2 g6 49.Qf8 Qh1 50.Kh1 a6 51.Qf7 Kh8 52.Qc8) 48...a5 (48...Qb1 49.Qf3 Qg6 50.Qf8+–) 49.Qd7 (49.Qe4 g6 50.Qf3 Qg2 51.Kg2 h5 52.Qf6 a4 53.Qch8) 49...Qa1 50.Qdd3 (50.Qed3 g6 51.Qf7 Kh8 52.Qd8) 50...Kg8 (50...f5 51.ef6 Kh8 52.Qd8 Kh7 53.Qe4 g6 54.Qb7) 51.Qa3 (51.Qd8 Kh7 52.Qe4 g6 53.Qea8 Qh1 54.Kh1 a4 55.Qg8) 51...Qf1 (51...Qa3 52.Qa3 a4 53.Qa4+–) 52.Qa5 (52.Qa5 Qb1 53.Qd8 Kh7 54.Qf3+–) 1–0. Woesner,Richard – Ladenhauf,Gideon, AUT–ch U14, 2004.

7.0–0 c5

8.c4 dc4 9.Bc4 0–0 10.Nc3 Nbd7 11.d3 Bd6 12.Qc2 Ne5 13.Ne5= Be5 14.Rad1 Nd7 15.d4 Qg5?? 16.f4+– Qg2 17.Qg2 Bg2 18.Kg2 Bf6 19.Ne4 Be7 20.dc5 f5 21.Nd6 bc5 22.Be6 Kh8 23.Nf7 Rf7 24.Bf7 Nf6 25.Bd5 Ng4 26.Ba8 Ne3 27.Kh1 Nf1 28.Rf1 Bf6 29.Bf6 gf6 30.Rg1 (30.Rg1 h6 31.Rc1+–) 1–0. stoker – beschuitje, Live Game Caissa's Web, 2005.

8.bc6 Nc6 9.c4 dc4 10.Bc4 0–0 11.d4 Rc8 12.Nbd2 Na5 (12...Qd6 13.e4 Qd7 14.Bb5=) 13.Bd3= Nd5 14.Qb1 g6 15.Rc1 Bb4 (15...Rc1 16.Qc1 Nb4 17.Be2=) 16.Rc8+= Qc8 17.Qf1 Qd7 18.Bb5 Qe7 19.Ba6 (19.Rc1 Nc7+=) 19...Ba6 20.Qa6 Bd2 21.Nd2 Qb4 22.Nb3 Nc4 23.Rb1 Nb2 (23...Nc7 24.Qb7 Nb5 25.Ba1+=) 24.Rb2 Qc3 25.Rb1 Rc8 (better is 25...Qc7+=) 26.g3 (26.Qa7 Qd3 27.Re1 Rc2+=) 26...Nb4 (better is 26...Ne3 27.Qa7 Qd3–/+) 27.Qa7+/– Qd3 28.Rf1 Nd5 29.Qb7 Rc7 30.Qb8 Kg7 31.Re1 Rc2 32.Qe5 Kh6 (32...Nf6 33.Rf1=) 33.e4?? (better is 33.Rf1+=) 33...Qf3–+ (33...Qf3 34.Rf1 Ne3 (34...Ra2 35.ed5 Qb3 36.de6 Qe6 37.Qe6 fe6 38.Re1+/–) 35.Qf4 Qf4 36.gf4 Nf1 37.Kf1 Ra2–+) 0–1. Krivoshapko,Alexander – Shkurkin,Nikolai, 2007.

7.0–0 Nbd7

8.a4 0–0 9.d3 c6 10.Nfd2 cb5 11.ab5= a6 12.c4 ab5 13.cb5 Ra1=+ 14.Ba1 Qa8 15.Nc3 d4=+ 16.ed4 Bg2–/+ 17.Re1 Bh3 18.Bf3=+ Qb8 19.Nce4 Ne4 20.de4=+ Qf4 21.d5 Qg5 22.Kh1= Bf6 23.Rg1 Qh6 24.de6 Ba1 25.Qa1 fe6=+ 26.Qd4 e5 27.Qd7?? Bd7–+ 28.Nc4 Rf3 29.Ne5 Bb5 30.Nf3–+ Qf4 31.Nd4 Qe4 32.f3 Qd4 (32...Qd4 33.Kg2 Bc6–+) 0–1. metal – ole1, caissa.com, 2007.

8.a4 c5 9.bc6 Bc6 10.c4 0–0 11.cd5 Bd5 12.Nc3 Nc5 13.Nd4 (13.Nd5 Qd5 14.Bf6 Bf6=) 13...Bb7+= 14.Nb3 Rc8 15.Nc5 Rc5 16.d4 Rg5 17.g3 Qa8 18.f4 Rg6 19.Bf3 (19.Bd3 Ne4=) 19...Nd5 (19...Bb4 20.Rc1+=) 20.Bd5 (20.Nd5 Bd5 21.Ba3 Ba3 22.Ra3 Rc8=) 20...Bd5 21.Rf2 Bh4 (21...Rc8 22.Rc1+=) 22.Kf1 (22.Nd5!? Qd5 23.Qf3=) 22...Bc4+= 23.Ke1 Be7 24.Ba3 Ba3 25.Ra3 Rh6 26.Kd2 (26.e4 Qc6+=) 26...Rd8 27.Kc1 Rf6 28.Qd2 Qc6 29.Kb2 Rf5 30.Qc2 Rb8 31.Ne4 b5 (31...Ra5 32.Nd2 b5 33.Nc4 bc4 34.Kc1–+) 32.a5 (32.Rc3 a6–/+) 32...b4 33.Ra4 Rfb5 (33...Rh5 34.Nc5–/+) 34.Nc5? White prepares the advance a6 (34.Nd2!? Rc8 35.Nc4 Qc4 36.Qc4 Rc4 37.Rc2 Rc2 38.Kc2 b3 39.Kb2=) 34...Qd5 (34...Bd5 35.Ra1–/+) 35.Rd2 b3?? (better is 35...Rc8–/+) 36.Qc4+– Qd6 37.a6 (worse is 37.Nb3 Rb3 38.Qb3 Rb3 39.Kb3 Qd5 40.Kc3 f5+–) 37...R5b6 38.Qe2 Qc6 39.Ra3 h6 40.Rd3 Qb5 41.Qd1 Qc4 (41...Qc6 42.Rdb3 Rc8 43.e4+–) 42.Rab3 (better is 42.Nd7!? Rb5 43.Nb8 Rb8+–) 42...Rb3 43.Rb3 (43.Nb3?! Qa6 44.Kc1 Qb7+–) 43...Rb3 (43...Rd8 44.Qf3+–) 44.Nb3 (better is 44.Qb3!? Qe2 45.Kc3 Qe3 46.Nd3 Qg1 47.Qb8 Kh7 48.Qa7 Qa1 49.Kc2 Qa4 50.Kb2 Qc4+–) 44...Qa6 45.Qc2 Qb6 46.Qc5 (46.Qc8 Kh7+–) 46...Qa6 47.Qh5 Qf1 48.Ka3 Qf2 49.e4 Qg2 50.e5 Qf1 51.Ka4 (51.Kb4 a6+–) 51...a6?? (51...Qc4 52.Ka3 Qf1+–) 52.Qh4+– Qb5 53.Ka3 a5 (53...Qd3 54.Qe7 g6 55.Qd8 Kg7 56.Qf6 Kg8 57.f5 Qf5 58.Qf5 gf5 59.Nc5+–) 54.Qd8 Kh7 55.Qa5 Qe2 56.Qd2 Qa6 57.Kb2 Qc4 58.Qc2 (58.Qc2 Qc2 59.Kc2+–) 1–0. Zielke,Bernd – Schomann,Michael, Schleswig Holstein–ch H, 2008.

8.d3 0–0 9.a4 c5 10.Nbd2 Rc8 11.c4 Qc7 12.a5 ba5 13.Qa4 a6 14.Qa5 Qa5 15.Ra5 ab5 16.cb5 Nb6 17.Ra7 Rc7 18.Be5 Rd7 19.Rfa1 Rb8?? 20.Bb8+– (20...Bc8 21.Ne5 Ra7 22.Ra7+–) 1–0. orane (2210) – Copenhagen5, Live Game Caissa's Web, 2004.

8.d3 c5 9.c4 0–0 10.Nc3 d4 11.ed4+/– cd4 12.Nd4 Nc5 13.Nc6+– Bc6 14.bc6 Qd6 15.d4 Nce4 16.Qd3 Nc3 17.Bc3 Qc6 18.Bf3 Qc7 19.Ba8 Ra8 20.d5 ed5 21.cd5 Rd8 22.Bf6 Bf6 23.Rac1 Be5?? 24.Rc7 (24.Rc7 Bc7 25.Qa3+–) 1–0. pereira – kserks, internet, 2011.

8.d3 c5 9.c4 dc4 10.dc4 0–0 11.Qa4=.

8.d3 c5 9.c4 Qc7 10.Nbd2 (10.cd5 Bd5 11.e4 Bb7=) 10...Rc8 (10...0–0 11.cd5 Bd5 12.e4=) 11.a4 (11.Qa4 Ra8+=) 11...h5 (11...0–0 12.a5=) 12.a5 Bd6 (12...ba5 13.Bc3+=) 13.h3 (13.ab6 Qb6 14.Bc3 e5+=) 13...g5? (better is 13...ba5!? 14.Bc3 e5+=) 14.Ng5 (14.a6 Ba8 15.Ng5 Rg8+/–) 14...Ke7 (14...ba5 15.cd5 Bd5 16.Nge4 Bh2 17.Kh1+/–) 15.ab6+– Qb6 16.Ra2 Bb8 (16...Rcg8 17.f4+–) 17.Qa1 Qd6 Do you see the mate threat? 18.f4 Rhg8 19.Ndf3 (19.Bf3 Rcd8+–) 19...d4 20.Qe1 (20.ed4!? Qf4 21.Bc1 Qg3+/–) 20...de3+/– 21.Ne5 Rg5? (better is 21...Rcf8+/–) 22.fg5+– Rg8 (22...Ne5 23.gf6 (23.Rf6 Nd3 24.Rf7 Kf7 25.Bh5 Kg8 26.Bf7 Kf7–+) 23...Ke8 24.Be5 Qe5 25.g3+–) 23.Qg3 (better is 23.gf6 Ke8 24.Bf3 Bf3 25.Nf3 Qd3+–) 23...Ke8? (23...Ne5 A) 24.gf6 Kd7 25.Qg8 Nd3 26.Qf7 Kc8 27.Qg8 Kd7 28.Qh7 Kc8 29.Qh8 Kd7 30.Qg7 Kc8+–; B) 24.Rf6?! Nc4 25.Qd6 Nd6+= (25...Kd6 26.dc4 Rg5 27.Rf7 Bg2 28.Ra6 Bc6 29.Kh2 Rg2 30.Kh1 Rh2 31.Kh2 e5 32.Rc6); C) 24.Be5 Qe5 C1) 25.gf6 Kd7 26.Qe5 Rg2 (26...Be5? 27.Bh5 Bd4 28.Rf4+–) 27.Kh1 Be5–+; C2) 25.Qe5 Be5 26.Ra7 Rg5 27.Rb7 Ke8 28.b6+–) 24.Qf4 (24.Qe3 Ne5 25.Rf6 Nd7+–) 24...Ne5 25.Be5?? (better is 25.Qf6 Rg6 26.Be5 Rf6 27.Bd6+–) 25...Qe5+/– 26.Qe5 Be5 27.Ra7 Bg2 28.Kg2 (28.Rf6?! Bf6 29.Kg2 Rg5 30.Kf3 Bd4=) 28...Rg5 29.Kh1 Rg3 30.Rf3 h4 31.Ra8 (31.Rg3 Bg3 32.Kg2 Bb8+–) 31...Ke7 32.Ra7 (32.Rg3 Bg3 33.Kg2 Kd6+/–) 32...Ke8 33.b6 Nd7 34.b7 Ke7 35.Ra5 (35.Rg3 Bg3 36.Kg2 Bb8+/–) 35...f5 (35...Rf3 36.Bf3 Kd6 37.Ra6 Ke7 38.Kg2+/–) 36.Rb5 (36.Rg3 hg3 37.Rb5 f4+/–) 36...f4 37.Rg3 fg3 38.d4! Bb8? (38...cd4 A pinning theme 39.Re5) 39.dc5+– Ne5 40.Ra5 (40.Kg2 Kd7+–) 40...Kd7 41.Ra6 (41.Kg2 Kc7 42.Rb5 Nc6+–) 41...Nc6 (41...Kc7 42.Rb6+/–) 42.Kg2+– e5 43.Kf3 Nd4 1–0. Tilp,Andreas – Thunert,M, DDR, 1989.

8.d4 0–0 9.Nbd2 a5 10.a4 Re8 11.c4 dc4 12.Nc4 Bd5 13.Ba3 Ba3 14.Ra3 Qe7 15.Rc3 Ne4 16.Rc1 Rac8 17.Nce5 Nb8 18.Bc4 Ba8 19.Qb3 Kh8 20.Rfd1 h6 21.Nd2 Nd6 22.Bd3 Bd5 23.Qa3 Kg8 24.Rc3 Qf6 25.Rdc1 Qd8 26.Nec4 Nc4 27.Nc4 Bc4 (better is 27...c5!?+/–) 28.Rc4+– (worse is 28.Bc4 Qd6+/–) 28...Nd7 29.Be4 c5? (29...e5+–) 30.Bc6 (better is 30.bc6 Nf6 31.c7 Rc7 32.Rc7 Ne4 33.Qd3+–) 30...Re7+/– 31.Bd7 Rd7 32.g3 Rd5 33.dc5 Rd1 34.Kg2 Rd3 35.R1c3?? (35.Qb2+/–) 35...Rc3?? (better is 35...Qd5 36.Kh3 Rd2–/+) 36.Qc3+– (36.Rc3?! Qd5 37.f3 Qd1=) 36...Kh7 (36...bc5 37.Rc5 Rb8 38.e4+–) 37.Qd4 (better is 37.cb6!? Rc4 38.Qc4 Qb6 39.Qc6+–) 37...Qd5+/– 38.Qd5 ed5 39.Rc3 (39.Rf4!? Rc5 40.Rf7+/–) 39...bc5+= 40.Kf3 Kg6 41.Ke2 Kf5 42.f3 Ke5 43.Kd3 f5 44.f4 Kd6 45.h3 g5 46.g4 (better is 46.fg5!? hg5 47.Rc1 c4 48.Kd2=) 46...fg4 47.hg4 gf4 48.ef4 Rg8 49.Ke2 Rg4 50.Kf3 d4 51.Rd3 (51.Rc1 Rg7–/+) 51...Rg7 52.Ke4 (52.Rd2!? Kd5 53.Re2–+) 52...Re7–+ 53.Kf3 Kd5 54.f5 c4 55.Rd1 d3 56.Kf4 Kd4 57.f6 Rf7 58.Kf5 Kd5 (better is 58...c3 59.Kg6 c2 60.Rc1–+) 59.Re1?? (better is 59.Kg6 Rf8 60.Kg7–/+) 59...d2–+ 60.Re8 (60.Rd1 c3 61.b6–+) 60...Rd7 61.Re7 Rd8 62.f7 d1Q 63.Re8 Qf3 (63...Qh5 64.Kf4 Qf7 65.Kg3 Re8 66.Kg4 Rg8 67.Kh4 Qf4 68.Kh5 Qg5) 64.Kg6–+ Qg4 65.Kh6 (65.Kh7 Qf5 66.Kh8 Rd7 67.Rb8 Qf7 68.Rd8 Rd8) 65...Qe6! 66.Re6 Ke6 67.Kg6 c3 68.b6 c2 (68...c2 69.f8Q Rf8 70.b7 c1Q 71.b8Q Rf6 72.Kh5 Qh6 73.Kg4 Qg7 74.Kh5 Rh6) 0–1. Solari,Pablo (1690) – Pena,Alejandro (1810), Montevideo URU, City Ch, 2012. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 Be7 5.e3 b6 6.Be2 Bb7 7.0–0 Nbd7)

8.d4 0–0 9.Nbd2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Qa8 13.Qa8 (13.Bc3 Qa3=) 13...Ra8 (worse is 13...Ba8 14.Ra1+=) 14.Ra1 ½–½. Pfueller,Volker (1795) – Mellenthin,Horst (1940), GER–ch Seniors, 2009.

7.d4 0–0

8.0–0 Nbd7 9.a4 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.a4 Nbd7 10.d4).

8.Nc3 c5+=.

8.Nbd2 a6 9.a4= c5 (9...Nbd7 10.0–0=) 10.c4 (10.bc6 Nc6 11.0–0 Ne4=) 10...Nbd7 (10...ab5 11.ab5 Ra1 12.Qa1=) 11.0–0= Qc7 12.Rc1 (12.cd5 ed5 13.Qc2 Bd6=) 12...ab5+= 13.ab5 dc4 (13...Bd6 14.Bd3+=) 14.Bc4 Bd5 (14...h6 15.h3=) 15.Qb3 (15.h3 Rfc8=) 15...Qb7 (15...h6 16.Rfd1=) 16.Rfe1 (16.Ra1 Rfc8=) 16...cd4 (16...Rfc8 17.e4 Bc4 18.Rc4 cd4 19.Bd4=) 17.Bd5= Nd5 (17...Qd5 18.Bd4 Qb3 19.Nb3=) 18.Bd4 Nc5 19.Bc5 Bc5 (19...bc5 20.Nc4=) 20.Ra1 (20.Ne4 Be7=) 20...Nb4 (20...Ra1 21.Ra1 Ra8 22.Ra4=) 21.Reb1 (21.Nc4 Rfd8=) 21...Ra1 (21...Rfd8 22.h3=) 22.Ra1= Qd7 23.Qc4 (23.Qa4 Qd5=) 23...Rc8 24.Ne4 (24.g3 h6=) 24...Be7+= 25.Qe2 Qd5 (25...f5 26.Ng3+=) 26.Ng3 Qc5 (26...Rc2 27.Rd1 Re2 28.Rd5+=) 27.Rd1 (27.Nd4 g6+=) 27...Nd5 28.Ne4 Qb4 (28...Qa3 29.g4+=) 29.Qd3= Nf6 (29...Qc4 30.g3=) 30.Nf6 Bf6 31.h3 (31.Qd7 Qc5=) 31...g6+= 32.e4 Rd8 (better is 32...Rc5+=) 33.Qb1? (better is 33.Rb1!? Rd3 34.Rb4+=) 33...Rd1–+ 34.Qd1 Qb5 (34...Qe4 35.Qc1 Be5 36.Ne5 Qe5 37.Qb1–+) 35.e5 (35.Qd6 Qb1 36.Kh2 Qe4 37.Qb6 Kg7–/+) 35...Be7–+ 36.Qc1 (36.Qd4 Qc6–+) 36...Kg7 37.Qc7 (37.Qf4 Qb1 38.Kh2 Qd3–+) 37...Qc5 38.Qd7 (better is 38.Qc5 Bc5 39.Kf1–+) 38...b5 0–1. Oprisor,R – Moshina,Cristina (2185), Deva tt, 1998.

8.Nbd2 c5 9.dc5 Bc5 10.0–0=.

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  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
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