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TESTD890 Release 2020-10-06
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7

(...)

5.a3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Be7).

5.a4 c6 6.Nf3 0–0 7.Be2 c5 8.c4 a6 9.0–0 Re8 10.d4 cd4 11.Qd4 Nbd7 12.cd5 Nd5?? (better 12...Nc5 13.de6 Be6 14.Qd8 Red8+=) 13.Qg7 1–0. DEFFM – GuestRNPN, freechess.org, 2019.

5.a4 Nbd7 6.Nf3 c5 7.c4 0–0 8.d3 b6 9.Be2 Bb7 10.Nbd2 dc4 11.Nc4 Nd5 (11...a6 12.ba6 Ra6 13.0–0=) 12.0–0 Bf6 13.d4 cd4 14.Nd4 Rc8 (14...Nc5 15.a5=) 15.Nd6+= Qc7 (15...Rc7 16.Nb7 Rb7 17.Bf3+=) 16.Nb7 (better 16.Nc8 Rc8 17.Qd2+–) 16...Qb7= 17.Rc1 Nc5 18.Bf3 h6 (18...Be5 19.Ne6 Bh2 20.Kh2 fe6 21.Rh1+=) 19.Ba1 Bd4 20.Qd4 Rfd8?? (better 20...f5+=) 21.Qg7 1–0. GuestWNPZ – GuestPXNL, freechess.org, 2017.

5.c4 Bd7 6.a4 0–0 7.Nf3 Ne4 8.d3 Bb4 9.Nbd2 Nd2 10.Nd2 a6 11.Be2 c6 12.0–0 (12.ba6 Na6 13.d4 Qa5=+) 12...cb5=+ 13.ab5 a5 (13...dc4!? 14.dc4 Bb5 15.cb5 Bd2+=) 14.Nf3 b6 15.Qc2 Be8 16.Ne5 (16.Rfc1 Qd6+–) 16...Bd6 (16...f6 17.Nf3+=) 17.Nf3 Nd7 (17...Bb4 18.Rfc1+–) 18.Nd4 Nf6 19.cd5 Nd5 20.Rfc1 Nb4 21.Qb3 Rc8 22.Rc8 Qc8 23.Rc1 Qb8 24.h3 Bd7 25.Bf3 Rc8 26.Nc6 Bc6 27.bc6 Rc7 28.Qc3 Na2?? (better 28...e5 29.Qc4 b5=) 29.Qg7 1–0. GuestPXKS – GuestBMTP, freechess.org, 2017.

5.d4 c5 6.Nf3 (6.dc5!? Nbd7 7.c6 bc6 8.bc6=) 6...c4=+ 7.Nc3 Qa5 8.Be2?? (better is 8.Qd2=+) 8...Bb4 (8...Ne4 9.Kf1 Qb4 10.Qb1 Nc3 11.a3 Nb1 12.ab4–+) 9.Qd2 (9.0–0 Bc3 10.Bc3 Qc3 11.Qc1–+) 9...Bd7 (better is 9...Ne4 10.Qc1 Qb5–+ (10...Nc3?! 11.a3 Qb5 12.Qd2 Ne2 13.Qb4–+)) 10.a3=+ Bc3 11.Qc3 Qc3 12.Bc3 Bb5 13.a4 Bd7 14.Bb4 Nc6 15.Bd2 0–0 16.0–0 Ne4 17.Rfb1 Nd2 18.Nd2 b6 19.h3 Na5 20.c3 Rfb8 21.Nf3 f6 22.Nh2 Nb3 23.Ra2 a5 24.Bd1 b5 25.ab5 a4 26.Nf3 Bb5 27.Nd2 Kf7 (28.Nf3 h5–+; 27...Be8 28.Bg4 Kf7 29.Bh5 g6 30.Bd1–+) 0–1. makaveli1982 – conscrea (1670), internet, 2007.

5.Be2 b6 6.Bf3 (6.Nf3!?=) 6...0–0 7.Ne2 a5 (7...Nbd7 8.c4=) 8.ba6 (8.c4!?=) 8...Ba6 9.0–0 Be2 (9...Nc6 10.d3=+) 10.Qe2 Nbd7 11.c4 c6 12.cd5 cd5 13.a3 (13.Nc3 Qb8=) 13...Bc5 (13...e5!?=+) 14.Nc3= Qc7 (14...Ne5 15.Nb5 Nc4 16.d3 Nb2 17.Qb2=) 15.e4 (15.Nb5!? Qd8 16.Rfc1+=) 15...de4 16.Ne4 Ne4 17.Be4 Rab8 (17...Ra4 18.Rac1 Qd6 19.d4 Ba3 20.Rc6=) 18.Qh5 (better is 18.Qg4 g6 19.Qh4+=) 18...Nf6?? (better is 18...f5 19.Bb1 Nf6=) 19.Bf6+– Qf4 1–0. MasterofDisaster – georgizj, Live Game Caissa's Web, 2004.

5.Be2 c5 6.Nf3 0–0 7.0–0 Nbd7 8.a4 b6 9.c4 Bb7 10.Na3... 1–0. Hecht – Berner 1956.

5.Be2 c6 6.a4 a5 (6...Nbd7 7.Nf3=) 7.f4 (7.Nf3 0–0=) 7...h5 (7...Ne4 8.Nf3=) 8.Ra2 (8.Nf3 h4+=) 8...Ne4 9.Nf3 Bf6 (better is 9...h4+=) 10.Ne5?? (10.Bf6 Qf6 11.0–0 cb5 12.ab5 0–0+=) 10...Qe7?? (better is 10...Be5 11.Be5 Qh4 12.g3 Ng3 13.hg3 Qh1 14.Bf1 Nd7 15.Bg7 Rg8–+) 11.d3 (11.0–0 h4+/–) 11...Nd6 (11...Be5 12.de4 (12.fe5? Qh4 13.g3 Ng3–+; 12.Be5? Qh4 13.g3 Ng3–+) 12...Bb2 13.Rb2 de4 14.Nc3 Qh4 15.g3=) 12.Ba3 (12.Bh5 cb5 13.ab5 Bd7+=) 12...Qc7 13.d4 Nf5 14.Kf2 (14.Qd2 Bh4 15.g3 Bd8+=) 14...Nd6 (14...cb5!? 15.ab5 Nd7=) 15.Bd6+= Qd6 16.Bh5 Be5 17.fe5 Qe7 18.Be2 Qh4 (18...f6 19.ef6 Qf6 20.Bf3+=) 19.g3+/– Qh3 (19...Qg5 20.Nc3+/–) 20.Nd2 Qf5 21.Nf3 g5 22.g4 Qg6 23.Bd3 f5 24.gf5 ef5+/– 25.Qg1 g4+= 26.h3 Qh5= 27.Nd2 Qh4 28.Qg3+/– Qh5 29.hg4?? Qh1–+ (29...Qh1 30.Nf1 fg4–+) 0–1. Stabenow,Juergen – Fiedler, corr SOK–87–13, 1987.

5.Ne2 Bd7 6.a4 c5 7.Ng3 0–0 8.c4 a6 9.Nc3 d4 10.ed4 cd4 11.Nce4 Ne4 12.Ne4 f5 13.Ng3 e5 14.Qb3 Be6 15.Ba3 Nd7 16.Be7 Qe7 17.d3 ab5 18.Qb5 Nc5 Black prepares the advance e4 19.a5 (19.Be2!?–+) 19...e4 20.Qb1?? (20.Kd1–+) 20...ed3 21.Kd2 (21.Kd1 Bc4 22.Qb4 Bb3 23.Kc1 f4–+) 21...Bc4 22.Kd1 (22.Qb2 Nb3 23.Kd1 Na1 24.Bd3 Bb3 25.Kc1 Ra5–+) 22...Rae8 (better is 22...Bb3 23.Qb3 Nb3 24.Bd3 Na1–+) 23.Qb4 Bb3 24.Kc1 Qe1 (better is 24...f4!? 25.Nh5 Qe1 26.Qe1 Re1 27.Kb2–+) 25.Qe1 Re1 26.Kb2 Ra1 27.Ka1 g6 (better is 27...f4 28.Nh5 Re8 29.Bd3 Nd3 30.Rb1–+) 28.h4 (28.Kb2 Bd5 29.f3 Ra8–+) 28...f4 (28...f4 29.Ne4 Ne4 30.Bd3 Nf2–+) 0–1. Kozlov,Vladimir Alex – Marinin,Viktor (2015), Northwest–ch Seniors, 2009.

5.Nf3 Qd6 6.Be5 Qb6 7.a4 a6 (7...Nbd7!?=) 8.a5+= Qc5 9.Bd4 (9.Ra3 c6 10.d4 Qb4 11.c3 Qb2=) 9...Qd6= 10.Nc3 (10.ba6 Na6 11.Be5 Qd8=) 10...0–0 11.Be5 Qd8 12.Be2 Ne4 13.ba6 Na6 14.d3 Bb4 (14...Nc3!? 15.Bc3 Nb4=) 15.de4+= f6 16.Bd4 c5 Exerts pressure on the isolated pawn 17.0–0 cd4 18.Qd4 Bc3 (18...de4 19.Ne4 Ba5 20.Rfd1+=) 19.Qc3+– de4 20.Rfd1 Qc7 21.Qc7 Nc7 22.Nd2 f5 23.Nb3 Nd5 24.Bc4 Nb4 (24...Nc3 25.Rd6+=) 25.c3 Nc6 26.Nd4 (26.Rd6 Rd8 27.Rd8 Nd8+=) 26...Na5+= 27.Be6 Be6 28.Ne6 Rfc8 29.Rd7 g6 30.Nc7 Ra7 (30...Rd8 31.Rad1 Rd7 32.Rd7=) 31.Nd5 Re8?? (better 31...Rf8+=) 32.Nf6+– Kf8 33.Nh7 (33.Nh7 Kg8 34.Nf6 Kf8 35.Ne8 Ke8 36.Rg7+–) 1–0. DEFFM – GuestMVVX, freechess.org, 2018.

5.Nf3 Kf8 6.Be2 b6 (6...a6 7.a4=) 7.0–0 Bb7 8.Ne5 Nbd7 9.f4 Ne5 (9...a6 10.a4+=) 10.fe5+/– Nd7 11.Bh5 (11.c4 Ke8+/–) 11...g6+= 12.Bf3 Kg7 13.c4 Nc5 (13...a6 14.cd5 Bd5 15.Bd5 ed5 16.a4+=) 14.d4+/– Ne4 15.Be4 de4 16.Nc3 Rf8 (16...a6 17.Qc2+/–) 17.Qc2 c5 (17...Bg5 18.Rae1+/–) 18.Ne4 a6 19.a4 ab5 20.ab5 Qc7 (20...cd4 21.ed4 Qc7 22.Ra8 Ba8 23.Nf6+–) 21.Nd6 Bd6?? (better is 21...Kg8+–) 22.ed6 Qd6 (22...Qc8 23.dc5 f6+–) 23.dc5 (23...Kh6 24.cd6 Ra1 25.Ra1+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.f4 b6 6.Nf3 Bb7 7.Be2 c5 8.0–0 0–0 9.a4 Ne4 10.c4 (10.Nc3 a6=) 10...f6 (10...dc4 11.Bc4 Bf6 12.Qc2=) 11.d3 Nd6 12.g4 (12.Qd2 a6=) 12...dc4 13.dc4 Qc7 (13...a6 14.Qc2=+) 14.Nc3 Nf7 (14...Nd7 15.Qd3=) 15.Qc2 (15.Bd3=) 15...Nh8 (better is 15...a6!?=) 16.Bd3+/– g6 17.h4 (17.Be4 Nd7+/–) 17...Rf7+= 18.h5 (18.Be4 Nd7+=) 18...g5 (18...Nd7 19.hg6 Ng6 20.Kf2+=) 19.Nd2 (19.f5 Qg3 20.Qg2 Qg2 21.Kg2 e5+/–) 19...f5? (better is 19...gf4!? 20.ef4 Rg7=) 20.gf5+/– gf4 21.Rf4 Rg7 22.Kf1 Bg2 23.Ke2+– Nd7 24.h6 Rg3 25.Nce4 e5 26.Rf2 Be4 27.Ne4 Rg4 28.f6 Bf8 29.Raf1 Kf7 30.Nc3 Ng6 31.Nd5 Qd6 32.Bf5 Rg3 33.Qe4 Rd8 34.Rg2 Nf6 35.Bg6 Rg6 36.Rg6 hg6 37.Rf6 (37...Qf6 38.Nf6 Bh6 39.Qe5 Be3 40.Ke3 Rd1 41.Qe8 Kg7 42.Ng4 Rd4 43.Qe7 Kh8 44.Qf8 Kh7 45.Nf6#) 1–0. Hecht,Hans – Henske, Tempelhof, 1953.

5.f4 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Be7).

5.a4 0–0

6.c4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nc3 dc4 (10...b6 11.Ne5 Bb7 12.Qf3=) 11.Bc4 cb5 (11...b6 12.0–0=) 12.Nb5 Nc6 (12...Nbd7 13.0–0=) 13.0–0 Nb4 (13...Bd7 14.d4=) 14.d4 (14.d3 Bd7+=) 14...Nbd5 (14...b6 15.Qe2=) 15.Qb3 (15.Ne5 Nd7+=) 15...Bd7 (15...b6 16.Re1+=) 16.Bb2 (16.Rb1 Nb6+=) 16...Qb6= 17.Ne5 Bc6 (17...Bb5 18.Qb5 Ra8 19.Rc1=) 18.h3 (18.Ra1 Rb8+=) 18...Ne4= 19.Rd1 (< 19.Nc6 bc6 20.Na3 Nd2 21.Qb6 Nb6–+) 19...f6 (19...Ra8 A) < 20.Nc6 bc6 (< 20...Qc6 21.Bd3 f5 22.Rc1+=) 21.f3 Nef6–/+ (< 21...cb5 22.Bd5 ed5 23.Qd5+/–); B) 20.f3 Bb5 21.Bd5= (< 21.Bb5 Nec3–/+)) 20.Nd3 (20.f3 Bb5 (< 20...fe5 21.fe4 Nf6 22.Be6 Kh8 23.de5 Ne4 24.Nd6+/–) 21.Bd5 Ng5+–) 20...Nd6 (20...Ra8 21.Nf4 Nf4 22.ef4=) 21.Nd6= Qb3 22.Bb3 Bd6 23.e4 Nc7 24.e5 fe5 (24...Be7 25.Nf4 Kf7 26.Ne6 Ne6 27.d5+=) 25.de5 Be7 26.g3 Bd5 27.Bd5 Nd5 28.Bd4 b5 29.Bc5 Bc5 30.Nc5 Kf7 31.Rb1 b4 32.Ne4 h6 33.Rb3 Ke7 34.h4 Ra8 35.f4 Ra3 36.Nd2 Ra2=+ 37.Nc4 Rc2 38.Na5 Kd7 39.Rd3 Rc3 40.Rc3 Nc3 41.Kf2= Ne4 42.Kf3 Nc5 43.Nc4 b3 44.Nb2 h5 45.g4 g6 46.gh5= gh5 47.Ke3 Ke7 48.Kd4 Nd7 49.Ke4 Nc5 50.Kd4= ½–½. Iosif,Daniela – Frank,Tena, Hessen–ch (Women), 1992.

6.c4 dc4 7.Bc4 a6 8.d3 =+.

6.Be2 b6 7.Nf3 Bb7 8.0–0 c5 9.d3 Nbd7 10.Nbd2 Rc8 11.a5 ba5 12.Bc3 a4 (12...Ra8 13.Nb3=) 13.Ra4+= Nb6 (13...Qb6!?+=) 14.Ra7+– Ba8 15.Qa1 Rc7 16.Ra6 Qb8? (better 16...Rb7+–) 17.Be5+– h6 (17...Nfd7 18.Bc7 Qc7 19.Ra7+–) 18.Nb3 c4 19.Nbd4 Nfd7 20.Bg7 Kg7 (20...Rfc8 21.Bh6 Bf6+–) 21.Nf5 Kg6 22.Qg7 Kf5 23.Nd4 1–0. pcmvr – jjrizzo, net–chess.com, 2018.

6.Be2 b6 7.Nf3 c5 8.0–0 Bb7 9.d3 Nbd7 10.Nbd2 Rc8 11.a5 h6 12.c4+= 1–0. pcmvr – tomy, net–chess.com (1), 2019.

6.Nf3 a6 7.c4 dc4 8.Nc3 ab5 9.Nb5 c6 10.Nc3 Nd5 11.Bc4 Nc3 12.Bc3 Bf6 13.d4 Nd7 14.Qb3 Nb6 15.0–0 Nc4 16.Qc4 Qd5 17.Nd2 Qc4? 18.Nc4 Bd8 19.Bb4 b5 20.ab5 Ra1 21.Ra1 cb5 22.Bf8 1–0. Zylla – Maesch, BS–Senioren–MK 1992.

5.c4 a6

6.a4 0–0 7.Nc3 c5 8.Nf3 Nbd7 9.d3 a5 10.g3 Nb6=+ 11.Qb3 Ng4 12.h3 Nh6 13.Bg2= Nf5 14.0–0 dc4 15.dc4+= Qc7 16.Ne4 f6 17.Rfd1 Bd7 18.Rd2 e5 19.Rad1 Be6 20.Bf1 Nh6 21.Nc3 Nf7 22.Nd5+= Bd5 23.cd5 e4 24.Nh4 Bd6 25.Nf5 Nd7 26.Rc1 b6 27.Nd4 Qb7 28.Ne6+/– Rfe8 29.Bg2 Ng5+– 30.Qd1 Ne5 31.Be5 Be5 32.Ng5 fg5 33.Rc4 Qd7+/– 34.Re4 Qd6 (34...Rad8 35.Qg4+/–) ½–½. Schulze,H – Heimrath,Reiner, Mittelfranken–ch, 1991.

6.d4 dc4 7.Bc4 ab5 8.Bb5 Bd7 9.Qb3 0–0 10.Bd7 Nbd7 11.Nf3 Nb6 12.0–0 Nfd5 13.a4 Ra5 14.Nc3 Bf6 15.Rfc1 Qd7 16.Nd5 ed5 17.Ne5 Be5 18.de5 Na4 19.Rd1 Rfa8 20.Qb7 Qe8 21.e6 fe6 22.Be5 R5a7 23.Qb4 Qh5 24.Qd4 c5 25.g4 Qf7 26.Qf4 Qf4 27.Bf4 c4 28.Rdb1 Nc5 29.Ra7 Ra7 30.Rb8 Kf7 31.Rc8 Nd3 32.Bb8 Ra3 33.h4 Kf6 34.f4 Ra1 35.Kg2 h6 36.Kf3 Rh1 37.Kg3 Rb1 38.h5 Ke7 39.Kh4 Kd7 40.Rg8 c3 41.Rg7 Kd8 42.Rg8 Ke7 43.Rg7 Kf8 44.Rc7 Nf2 45.Rc8 Ke7 46.f5 Rg1 47.Bg3 Rh1 48.Bh2 Rh2 49.Kg3 Ng4 50.Kg4 c2 51.fe6 Ke6 52.Kg3 Rd2 53.Kf3 Ke5 54.Rc3 Kf5 55.Rc5 Ke6 56.Rc3 d4 57.ed4 Rd3 0–1. Bonetti,Shane – duckbreath (2505), ICC, 2002.

6.cd5 ed5 7.Nc3 ab5 8.Bb5 c6 =+.

5.Nf3 a5

6.a4 c6 7.d4 c5 8.Be2 b6 9.0–0 0–0 10.c4 dc4 11.Bc4 cd4 12.Qd4 Qd4 13.Bd4 Bb7 14.Bb6 Bf3 15.gf3 Nbd7 16.Bd4 Rac8 17.Bb3 Bc5 18.Bf6 Nf6 19.Nd2 Bb4 20.Nc4 Rfd8 21.Rfd1 Nd5 22.e4 Nc3 23.Rd8 Rd8 24.Ne5 Bc5 25.Kf1 Rd2 26.Nc4 Rf2 27.Ke1 Re2 28.Kf1 Rh2 29.b6 Bb6 30.Nb6 Rh1 0–1. Trkn – BVJ, itsyourturn.com 2000.

6.c4 0–0 7.Be2 b6 8.0–0. DEFFM – dolorium, freechess.org, 2019.

5.Nf3= b6

6.c4 a6 7.a4 0–0 8.Be2 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0 7.Be2 a6 8.a4 b6).

6.c4 Bb7 7.d4 0–0 8.Be2 c6 9.a4 a6 10.0–0 dc4 11.Bc4 cb5 12.ab5 ab5 13.Bb5 Ra1 14.Ba1 Qd5 15.Be2 Ne4 16.Nc3 Nc3 17.Bc3 Rc8 18.Bb2 b5 19.Qd3 b4 20.Qb5 b3 21.Bd1?? Qb5 0–1. Trkn – goldenbeauty, itsyourturn.com, 2000.

6.c4 Nbd7 7.cd5 0–0? (better is 7...ed5!? 8.Qc2 a6=) 8.de6+/– fe6 9.Bc4 (9.Ng5 Nc5 10.Qc2 h6 11.Bf6 hg5 12.Be7 Qe7+–) 9...Bb7 (9...Nc5 10.d4 Nce4 11.Qb3+/–) 10.Nc3 (10.Ng5 Nc5 11.Qc2 Nfe4 12.Be6 Kh8 13.Nf7 Rf7 14.Bf7 Nd3 15.Ke2 Nef2+–) 10...Nc5 (10...Bd5 11.Bd5 ed5 12.Ng5+=) 11.d3 (11.d4 Nce4 12.Be6 Kh8 13.Ne4 Be4+–) 11...Qd7 (11...Bd5 12.Bd5 ed5 13.0–0+/–) 12.0–0 (12.d4 Nce4+/–) 12...Rad8 (12...Bf3 13.Qf3 a6 14.d4+–) 13.Ne5 (13.d4 Nce4+–) 13...Qc8 (13...Qe8 14.d4 Bd6 15.f4+/–) 14.d4 Nd5? (14...a6 15.ba6 Na6 16.Qb3+–) 15.Qc2 (better is 15.dc5 Ne3 16.Qe2 Nc4 17.Qc4 Bc5 18.Na4+–) 15...Kh8?? (better is 15...Nc3 16.Bc3 Be4+–) 16.dc5 Bc5 (16...c6 17.Nd5 cd5 18.Bd3 Qc5 19.Qd1+–) 17.Ne4 (better is 17.Nd5 Bd5 18.Bd3+–) 17...Nb4 (17...Be7 18.Rac1 Qa8 19.Qe2+–) 18.Qc3 Rde8 (18...Kg8 19.Nc6 Bd4 20.Ne7 (20.Nb4?! Bc3 21.Nc3 c5 22.bc6 Bc6+=) 20...Kh8 21.ed4+–) 19.Nc6 (19.Ng6! hg6 20.Qg7) 19...Rf7 (19...Qd7 20.Rad1 Qf7 21.Be6 Re6 22.Nc5 (22.Nb4?! Be4 23.f3 Bb7+=) 22...Rc6 A) 23.Qb4?! Rc5 24.Qg4 Rf5+/– (24...Rb5? 25.Rd7 Qd7 26.Qd7 Rb2 27.Qc7+–); B) 23.bc6 Bc6 24.Ne6+–) 20.Ng5 Rf6 21.Na7 Qd7 22.Rfd1 Qe7 23.Qe5 h6 24.Ne4 Bd6 25.Qf6! Be4 26.Qe7 Re7 27.Nc6! Nc6 28.bc6 Bc6 29.Rac1 Bb7 30.Rd4 Re8 31.Rg4 Re7 32.e4 Bc8 33.e5 Bc5 34.Rd1 Re8 35.Rg6 Rf8 36.Bd4 Bd4 37.Rd4 c5 38.Rd6 Kh7 39.Bd3 Kg8 40.Rb6 1–0. gtate (1900) – asiongsalongga (1990), net–chess.com, 2006.

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

5.Nf3= c5

6.c4 0–0 7.a4 a6 8.Qc2 Nbd7 9.Nc3 b6 10.cd5 ed5 11.d4 Bb7 12.Nd2 Qc7 13.ba6 Ba6 14.Ba6 Ra6 15.Nb5 Qb8 16.0–0 Rc8 17.Rfc1 Ra8 18.Ba3 Kf8 19.f3 Qb7 20.Qb3 Ra5 21.Qc2 Rca8 22.Bb2 Rc8 23.Kf2 Raa8 24.Ba3 Kg8 25.Qd1 Bf8 26.h4 Qc6 27.dc5 bc5 28.Bb2 Qe6 29.g4 g6 30.a5 Bg7 31.Bf6 Bf6 32.Ra4 Bh4 33.Ke2 Bd8 34.Nc3 Ra5 35.Kf2?? Bh4 36.Ke2 Ra4 37.Qa4 Re8 38.Nf1 Nb6 39.Qb5 Nd7?? 40.Qd3?? d4 41.Ne4 Be7 42.Qc4 Bf8 43.g5 Qc4 44.Rc4 de3 45.Ne3 Kg7 46.f4? h6 47.Kf3 hg5 48.Ng5 f6 49.Ne4 g5 50.Rc1 gf4 51.Nf5 Kg6 52.Kf4 Bh6 53.Nh6–/+ Kh6 54.Nc5 Nc5 55.Rc5 Kg6 56.Rd5 Re1 57.Rb5 Rf1 58.Kg3 f5 59.Rc5 Kg5 60.Rb5 Ra1 61.Rb4 Ra3 62.Kg2 f4 63.Rb8 Re3 64.Kf2 Re6 65.Kf3= Rf6 66.Rc8 ½–½. Felkl,Karel – Agartanov,Vladimir, Jirasek mem–B, 2001.

6.c4 0–0 7.Be2 a6 8.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0 7.Be2 a6 8.a4).

6.c4 0–0 7.Be2 Nbd7 8.0–0 Nb6 9.d3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0 7.Be2 Nbd7 8.0–0 Nb6 9.d3).

6.bc6 bc6 7.Be2 Nbd7 8.Ne5 Bb7 9.0–0 Ne5 10.Be5 Bd6 11.d4 Be5 12.de5 Nd7 13.f4 Nc5 14.Qd4 Qb6 15.Nd2 Nd7 16.Rab1 Qc7 17.Qb4 Nb6 18.a4 c5 19.Bb5 Kf8 20.Qa3 g6? (better 20...a6 21.Bd3 Rb8+=) 21.a5+– Nc4 22.Bc4 dc4 23.a6 Bd5 (23...Bc8 24.Nc4 Kg7 25.Nd6+–) 24.e4 Bc6 25.Qc5 Kg7 26.Nc4 Rac8 (26...Qc8 27.Qe7 Rf8 28.Nd6 Qa6 29.f5 ef5 30.ef5+–) 27.Nd6 White prepares the advance f5 27...Ba8 28.Qf2 Rb8 29.f5 (29.f5 Rb1 30.f6 Kg8 31.Rb1+–) 1–0. orane – passionfar19, Live Game Caissa's Web, 2005.

6.bc6 Nc6=+ 7.c4 0–0 8.cd5 Nd5 9.g3 (9.Be2 Bd6=+) 9...Bf6 (9...Bd7 10.e4 Nf6 11.Nc3–/+) 10.Qc1 (10.d4 Be7=+) 10...Bd7 11.Nc3 Nc3 (11...Rc8 12.d4–/+) 12.Bc3=+ Rc8 13.Bg2 (13.Qb2 Bc3 14.dc3 Qc7=+) 13...b5 (13...Nb4! 14.0–0 Bb5–/+) 14.Qb2=+ Bc3 15.Qc3 Qa5 (15...Re8!?=+) 16.Qa5= Na5 17.0–0 (17.Ne5 Rfd8=) 17...Rc7 18.Ne5 Rfc8 19.Nd7 (19.d4 Nc4=) 19...Rd7 20.Rab1 (20.d4 Nc4=) 20...a6 (20...Rd2!? 21.Rb5 Ra2–/+) 21.Rfc1= The mate threat is Rxc8. White gets strong initiative 21...Rdc7 (21...Nc4 22.d4 Rdc7 23.h3=) 22.Rc7 Rc7 23.a4 Kf8 (23...Rc5 24.d4 Rh5 25.Bf1+–) 24.ab5+– ab5 25.Rb5 Rc1 26.Bf1 Nc4? (better 26...Ra1 27.d4 Ke7+–) 27.Rc5+– Rf1 28.Kf1 Nd2 29.Kg2 (29.Ke2 Ne4 30.Rc7 Nf6+–) 29...Ke7 30.Rc7 Kf6 31.g4 g5 (31...e5 32.Rc2 Nb3 33.f4+–) 32.f3 Nb3 (32...e5 33.Rc2 Nb3 34.Rc6 Kg7 35.Kf2+–) 33.f4 h6 34.Kg3 Nd2 35.h4 Nf1 (35...gh4 36.Kh4 Kg6 37.Rc6+–) 36.Kf2 Nh2 (36...Nd2 37.Rc2 Nb3 38.fg5 hg5 39.h5+–) 37.hg5 (better 37.fg5 hg5 38.hg5 Kg5 39.Rc5 f5 40.gf5 Ng4 41.Kf3 ef5+–) 37...hg5 38.fg5 Kg5 39.Rf7 Ng4 40.Ke2 Ne5 41.Rf8 Kg6 42.Rf1 Kg5 43.Kd2 Nc4 44.Kd3 Nd6 45.e4 e5 46.Rf8 Kg4 (46...Kg6 47.Rd8 Nb7 48.Rc8+–) 47.Rf6 (47.Rf6 Nb5 48.Rf5+–) 1–0. Sellmer,Dirk – Wiecki,Josef, Schleswig Holstein–ch, 1991.

6.bc6 Nc6 7.c4 dc4 8.Bc4 a6 9.0–0 b5 10.Be2 Bb7 11.d4 0–0 12.Nbd2 Rc8 13.h3 (13.a4 b4=) 13...Nd5 14.Nb3 Bf6 (14...Nb6 15.Rc1=+) 15.Rc1 Qb6 16.Nc5 Be7? (16...Rfd8=) 17.Rc2?? (better 17.Nd7!? Qa5 18.Nf8 Bf8 19.Qb3+–) 17...Bc5 (17...Ncb4!? 18.Rd2 Bc5 (worse 18...Na2 19.Qa1+=) 19.dc5 Qc5=+) 18.Rc5 Nce7 19.Qc1 Rc5 (19...Nf6 20.Qa1=) 20.Qc5 (20.dc5 Qc7+=) 20...Qc5 (20...Rc8 21.Qa3=) 21.dc5+= Rc8 22.Bd4 (22.Rc1 Nb4 23.a3 Bf3 24.gf3 Nbc6=) 22...Nf5= 23.Ne5 (better 23.Rc1!?=) 23...f6–/+ 24.Nd7 (better 24.Nd3 e5 25.Bg4–/+) 24...Kf7?? (24...Nd4 25.ed4 Nf4 26.Bg4–+) 25.Nb6 (25.Bf3!?=) 25...Rc7 (25...Nb6 26.cb6 Nd4 27.ed4–/+) 26.Bf3 e5?? (better 26...Nd4 27.ed4 Nb6 28.cb6 Rd7–/+) 27.Bd5 (27.Nd5 Bd5 28.Bd5 Ke8+–) 27...Bd5 28.Nd5 Rc6 (28...Rd7 29.Nb6 Rc7 30.g4+–) 29.Nb4 Rc8 30.Ba1 (30.Bb2 a5 31.e4 ab4 32.ef5 Rc5+–) 30...Rc5 (better 30...a5 31.e4 ab4 32.ef5 Rc5+–) 31.Na6 Rc6 32.Nb4 Rc4 33.Nd3 (better 33.a3 Ke6+–) 33...Nd6? (33...e4 34.Nb2 Rc2 35.a4+–) 34.a3 (34.Be5 fe5 35.Ne5 Ke6 36.Nc4 Nc4+–) 34...g5? (34...Ra4 35.Bb2+–) 35.Nb4 (better 35.Be5!? fe5 36.Ne5 Ke6 37.Nc4 Nc4+–) 35...h5 36.Rd1 Ne4 (36...Ke6+–) 37.Rd7?? (better 37.f3 Nc3 38.Bc3 Rc3 39.Rd3 Rc1 40.Kf2+–) 37...Ke6= 38.Rb7 (38.Rd1 Kf7 39.f3+–) 38...Nd6=+ 39.Rb6 f5?? Black prepares the advance g4 (better 39...Rc1 40.Kh2 Ra1–/+) 40.Kh2 Kd7 (40...h4+–) 41.Be5 Ne4 42.Rh6 (better 42.Rb5 Rc1 43.f3 Nf2+–) 42...Nf2 43.Rh5 g4 (43...Rc1 44.g4 fg4 45.Kg3+– (worse 45.Rg5 gh3 46.Rh5 Ng4 47.Kh3 Ne3+–)) 44.Rf5 gh3 (44...Ke6 45.Rf2 Ke5 46.hg4 Rg4+–) 45.Rf2 1–0. joaquimbage – rysiekbar, playok.com, 2012.

6.bc6 Nc6 7.Be2 Bd7 8.0–0 0–0 9.c4 dc4 10.Bc4 a6 11.d4 b5 12.Be2 Nd5 13.Nbd2 Bf6 14.Nb3 Qe7 15.Rc1 Rac8 16.Nc5 Rfd8 17.Na6 e5? (better 17...Ra8!? 18.Nc5 Ra2+–) 18.de5+– (18.Bb5?! ed4 19.ed4 Nd4 20.Rc8 Nf3 21.Qf3 Bc8 22.Bf6 Nf6+–) 18...Ne5 19.Qd5 (19.Be5 Rc1 20.Qd5+– (20.Qc1?! Be5 21.Qc5 Qc5 22.Nc5 Nc3 23.Ne5 Ne2 24.Kh1 Be6+=)) 19...Nf3+– 20.Bf3 (worse 20.gf3 Bb2 21.Rc8 Rc8=) 20...Rc1?? (better 20...Bb2 21.Rc8 Rc8+–) 21.Bc1+– (21.Rc1?! Bb2 22.Rd1 Bf6+–) 21...Bc8 (21...Bg4 22.Qb5 Bf3 23.gf3+–) 22.Qb5 h6 (22...Bd7 23.Qb4+–) 23.Nb4 Be6 24.h3 Bh4 (24...Bd7 25.Qb7+–) 25.Nc6 Qf6 (25...Qe8 26.Qh5 Bg5 27.Nd8 Qd8 28.Be4+–) 26.Nd8 Qd8 27.Rd1 Qf6 (27...Qc8 28.Bb2+–) 28.Bb2 (28.Qb8 Kh7 29.Be4 Bf5+–) 28...Qg6 29.Qd3 (29.Qa4 Bf6 30.Be4 Bf5 31.Bf5 Qf5 32.Qe8 Kh7 33.Qf7 Qg6 34.Qg6 Kg6 35.Bf6 Kf6+–) 29...Bf5 (29...Qd3 30.Rd3 Ba2+–) 30.Be4! Be4 31.Qf1 Bf6 (31...Bf5 32.Kh2+–) 32.Bf6 (32.Rd6!? Qg5 33.Bf6 gf6+–) 32...Qf6 33.Rd4 Bf5 34.Rf4 (34.Qb5 Kh7+–) 34...Qg5 (34...Qg6 35.Rf3+–) 35.g4 (35.Qb5!? Be6 36.Qg5 hg5+–) 35...Be6 36.Qd3 Ba2 (36...Qc5 37.Rd4 Qc1 38.Kg2 Qc6 39.f3+–) 37.Qf5 (better 37.Ra4 Qd5 38.Rd4+–) 37...Be6 38.Qg5 hg5 39.Ra4 Kh7 40.Ra5 Kg6 41.Kg2 f5 42.Ra6 Kf6 43.Kg3 fg4 (43...Ke5 44.gf5 Bf5 45.f3+–) 44.hg4 g6 45.f4 gf4 46.ef4 (46.Kf4 g5 47.Kf3 Kf7 48.Re6 Ke6+–) 46...Kf7 47.Re6! Ke6 48.Kf3 Kf6 49.Ke3 Ke6 50.Ke4 (50.Kd4 Kd6 51.Ke4 Ke6+–) 50...Kf6?? (50...Kd6 51.Kd4 Ke6+–) 51.Kd5 Kf7 52.Ke5 Ke7 53.g5 Kf7 54.Kd6 Kg7 55.Ke6 Kh7 56.Kf6 (56.Kf7 Kh8 57.f5 gf5 58.g6 f4 59.g7 Kh7 60.g8Q Kh6 61.Qg6) 56...Kg8+– 57.Kg6 Kh8 58.f5 (58.Kf7 Kh7 59.g6 Kh6 60.g7 Kh5 61.g8Q Kh4 62.Qg2 Kh5 63.Qg5) 58...Kg8+– 59.f6 Kh8 If Black now would get Kf5 in, he might survive 60.Kf7 Kh7 61.g6 Kh6 62.g7 Kg5 63.g8Q Kf5 64.Qe8 (64.Ke7 Ke4 65.Qc4 Kf3 66.f7 Ke3 67.f8Q Kd2 68.Qff4 Ke1 69.Qcf1) 64...Kg5 (64...Kf4 65.Ke7 Kf3 66.f7 Kf2 67.f8Q Ke3 68.Kd8 Kd3 69.Qa3 Kc4 70.Qe6 Kd4 71.Qae3) 65.Kg8 (65.Qe4 Kh5 66.Ke7 Kg5 67.f7 Kh5 68.Qf3 Kg5 69.f8Q Kg6 70.Q3f5) 65...Kf5 (65...Kf6 66.Qc6 Ke5+–) 66.f7 Kg5 (66...Kg4 67.Qe6 Kg3 68.Qg6 Kf4 69.f8Q Ke3 70.Qc2 Kd4 71.Qfc5) 67.f8Q Kg4 (67...Kh4 68.Qf3 Kg5 69.Qeh5) 68.Qg7 (68.Qg6 Kh4 69.Qfh6) 68...Kh4 (68...Kf3 69.Qf6 Kg3 70.Qeg6 Kh3 71.Qh8) 69.Qe4 Kh5 70.Qeg4 (70.Qgg6) 1–0. aferypopsl (1660) – shubban, playok.com, 2012.

6.Be2 0–0 (--> 5.Nf3 0–0 6.Be2 c5).

5.Nf3 Qd7

6.c4 c6 (6...0–0 7.Ne5 Qe8 8.Qf3=) 7.a4 (7.Nc3 0–0=) 7...0–0 8.Be2 (8.d4 Qc7=) 8...c5 (8...dc4 9.Bc4 a6 10.Nc3=) 9.0–0 b6 (9...a6 10.Na3=) 10.d3 (10.d4 Rd8=) 10...Bb7 (10...a6 11.Na3=) 11.Nbd2 (11.a5 ba5 12.Ne5 Qc7=) 11...Bd6 (11...a6 12.Qb3=) 12.h3 (12.Bf6 gf6 13.a5 ba5 14.cd5 Bd5+=) 12...Re8 (12...Qd8 13.a5=) 13.Re1 (13.Bf6 gf6 14.cd5 Bd5+=) 13...e5 (13...a6 14.Bf6 gf6 15.cd5 Bd5 16.d4=) 14.Qc2 (14.cd5 Nd5 15.Nc4 Qc7+=) 14...Qe6 (14...a6 15.cd5 Nd5 16.Nc4=) 15.cd5 Bd5 (15...Nd5 16.Nc4=) 16.e4+= Bb7 17.Nc4 e5 seems the pivot of the position 17...Bc7 (17...Nbd7!?+=) 18.Nfe5 Be5 (18...a6 19.f4+–) 19.Ne5 (19.Be5 Nbd7 20.Bf4 Nf8+–) 19...Nbd7 (19...a6 20.Qc4+–) 20.f4 (20.Nd7 Nd7 21.a5 Rad8+–) 20...Rad8 (20...Ne5 21.Be5 Nd7 22.Bg4+–) 21.Nf3 (21.a5 Ne5 22.Be5 Nd7+–) 21...h6 (21...a5+–) 22.e5 (better 22.a5!?+–) 22...Nd5 23.Bc1 (23.Qc4 Nf8+=) 23...Qg6 (better 23...Nf8+=) 24.Nh4?? (better 24.Bd2+=) 24...Qg3–+ 25.Nf3 Nf4 26.Bf4 Qf4 0–1. GuestVXPN – GuestXDZW, freechess.org, 2016.

6.d4 0–0 7.Bd3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 cb5 12.cb5 Ba3?? (better is 12...Bd6=) 13.Na3+– Qd6 14.Nb1 b6 15.Bb2 Qb4 16.Bc3 Qd6 17.Qb3 Bd7 (17...Re8 18.0–0+–) 18.Bb4 Qc7 19.Bf8 Kf8 20.Qa3 Ke8 21.0–0 Bc8 22.Rc1 Qb7 (22...Qd8+–) 23.Qd6 Nbd7 24.Rc7 Qb8 25.Ne5 g6 26.Nc6 Qc7 (26...Ng8 27.Nb8 f5 28.Nd7 Bd7 29.Qd7 Kf8 30.Qc8#) 27.Qe7 1–0. usingprogram (2030) – adiaela77, kurnik, 2013.

5.f4 c6

6.a4 a6 7.c4 (7.Nf3 cb5 8.ab5 0–0=) 7...Bd7 8.Qb3 (8.Nf3 0–0=+) 8...dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Bb5 13.Qb5 Qd7 14.Qb3 Qc6 15.Nf3 Qc1 16.Qd1 Qd1 17.Kd1 0–0 (17...Nbd7 18.d3=) 18.Nc3 (18.Bf6 Bf6 19.d4 Rc8=) 18...Nc6 19.Ke2 Nd7 20.Rb1 Rb8 21.d4 Nb4 (21...f5 22.e4=) 22.e4+= Nb6 23.Bb2 Nc4 24.Ne5 (24.d5 Rd8 25.de6 fe6=) 24...Rc8 (24...Ne5 25.fe5 Rd8 26.Nb5+=) 25.Nc4+= Rc4 26.Rd1 (26.Ke3 Bd6+=) 26...f6 (26...Bd6 27.Ke3=) 27.g3 Kf7 28.Rd2 b6 (28...g5 29.fg5 fg5 30.d5=) 29.Na4 Bd8 30.Nc3 Be7 31.Nb5 Na6 32.Kd3 Rc8 33.Ba3 Ba3= 34.Na3 Ke7 35.Rb2+= Rb8 36.Nc4 b5= 37.Na3 Nc7 38.Nc2 Kd6 39.Nb4 Rb6 40.Ra2 Rb7 41.g4 g6 42.h4 Kd7 43.Kc3 Kd6 44.Kb3 Kd7 45.Nd3 Rb6 46.Nb4 Rb7+= 47.Na6 Na6 48.Ra6 Rc7 49.e5 fe5 50.fe5 Rc6 51.Ra5 Rc4 52.Rb5 Rd4 53.Rb7 Kc6 54.Rh7 Rg4 55.h5 Kd5 56.hg6 Rg6 57.Rh5 Rg3 58.Kc2 Rf3 59.Kd2 Ke4 60.Ke2= Ra3 61.Kd1 Ra2=+ 62.Ke1 Ke3 63.Rh3 Kf4 64.Rh5 ½–½. Sundin,Thommy (2015) – Ekerman,Per (1925), Oeverhaerde Sweden, 1989.

6.a4 c5 7.Nf3 b6 8.Ne5 Bb7 9.Be2 0–0 10.0–0 Qc7 11.c4 Nbd7 12.d3 Bd6 13.Nd7 Nd7 14.Nd2 (14.Bf3 Rfe8=) 14...f5 (14...d4 15.Ne4= (worse is 15.ed4 Bf4 16.Nf3 Bf3 17.Bf3 Bh2 18.Kh1 Rad8–/+)) 15.g3 (15.Bf3 a6+=) 15...Nf6 16.a5 Rad8 (16...ba5 17.Qb3=) 17.Qb3 (17.Bf3 ba5 18.Qa4 Qe7+=) 17...Be7 (17...Ng4 18.a6 Ba8 19.Bg4 fg4 20.e4=) 18.ab6+= ab6 19.Ra7 Ra8 20.Be5 Qc8 (20...Qd7!? 21.Rfa1 dc4 22.Qc4 Nd5+=) 21.Rfa1+= Nd7 22.Bf3 (22.Bc3 Ra7 23.Ra7 Bf6+=) 22...Bf6 (22...Ne5 23.fe5 Bg5 24.Kf2 Ra7 25.Ra7=) 23.d4 Be5 (better is 23...cd4!? 24.Bd4 Nc5+=) 24.Ra8+/– (worse is 24.fe5 cd4 25.ed4 dc4=) 24...Ba8 25.de5 (worse is 25.fe5 cd4 26.ed4 dc4=) 25...Qb7?? (better is 25...dc4 26.Qc4 Bf3 27.Qe6 Kh8 28.Nf3 Re8+–) 26.cd5+– ed5 27.Ra8! c4 28.Qc4! dc4 29.Bb7 c3 30.Bd5 Kh8 31.Rf8 Nf8 32.Nb3 1–0. De Cat,Ben (2075) – Van Diermen,Henk (1750), NATO–chT, 1999.

6.Nf3 a6 7.a4 0–0 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Ne4 (10...cb5 11.Bb5 Bd7 12.Be2=) 11.0–0 (11.Nc3 Bh4 12.g3 Be7=) 11...Qb6 (11...cb5 12.Be5 Nc6 13.Bb5=) 12.bc6 bc6 13.Nc3 Nd6 14.Qe1 (14.Qb1 Qc7=) 14...Na6 (14...Ba6 15.Ne5=) 15.Qg3 (15.Qf2 Nb4=) 15...Nf5 Black launches an attack 16.Qf2 Nb4 17.Bd1 (17.Rb1!?=) 17...Ba6–/+ 18.Re1 (18.Ne2 Ra8+=) 18...Ra8 19.d4?? (19.Bb2 Bd3–/+) 19...c5 (better is 19...Bb7 20.Bb2 Na2–+) 20.g4 (20.dc5 Qc5 (20...Bc5?! 21.Na4 Qa5 22.Nc5 Qa1 23.Ne5=) 21.Nd4 Bh4–/+) 20...cd4 (20...Bc4 21.gf5 Ra1 22.fe6 Qe6 23.Ne5–/+) 21.ed4 (21.Na4!? Qb5 22.gf5 Qa4 23.Bd4+=) 21...Nd6–/+ 22.h4?? (22.Bb2 Na2! 23.Na4 Qb8–+) 22...Bd3 (better is 22...Bc4–+) 23.Bb2 Be4 24.Ne4 Ne4 25.Qg2 (25.Qe3 Na2 26.Qb3 Qc7–+) 25...Nc6 (25...Ra2 26.Bc1–+) 26.c3 Ra2 27.Re2 Ba3 28.Ba3 Ra3 29.Rb2 Qa7 30.Bb3 Nc3 31.Qd2 Nb5 32.Kg2 g6 33.Ra2 Ra2 34.Qa2 Qa2 35.Ba2 Nbd4 36.Nd4 Nd4 37.Kf2 h5 38.gh5 gh5 39.Bb1 Kg7 40.Ke3 Nc6 41.Bd3 Ne7 42.Kd4 Kf6 43.Ke3 (43.Be2 Nf5 44.Kc3 Nh4 45.Bh5 Ng6–+) ½–½. Brzoza,Miroslaw – Stanczak,J, corr Poland, 1981.

5.f4 Bd7

6.Nc3 a6 7.Nf3 0–0 8.Ne5 ab5=+ 9.Nd7 Nbd7 10.Bb5 d4 11.ed4= Nb6 12.f5 Qd4 13.fe6= c6 14.ef7 Rf7 15.Bd3 Re8 16.Be2?? Nfd5–+ 17.Ne4 Qe4 18.Rg1 Qf4 19.Bf3 Bh4 20.Kf1 Nc4 21.g3–+ 0–1. EXchess 3.11 – Comet B25, 2004.

6.Nf3 0–0 7.Be2 a6 8.ba6 Na6 9.Nc3 Ne4 10.0–0 Nac5 11.Ne4 Ne4 12.d3 Nd6 13.Qd2 f6 14.Rfb1 Nf5 15.e4= de4 16.de4 Bc5 17.Kh1 Nd6 18.Bd3 Bc6 19.Qe2 Nf7 20.Rd1 Qe7 21.e5 f5 22.Nd4 Bd4 23.Bd4 Rfd8 24.Qe3 b6 25.Kg1 Ra4 26.c3 Rda8 27.Qe2 Qh4 28.Bc4 Qf4 29.Be6+/– Qh6 30.Bf5 R8a5 31.Bc2 Ra3 32.Qc4 Bd5 33.Qc7 Ra8 34.c4 Bg2 35.Kg2 Qh3 36.Kg1 Qg4 37.Kf1 Rf3 38.Ke1 Re8 39.Bd3 Qh4 40.Ke2 Qf4 41.c5?? Rf8?? 42.Rd2+– Re8 43.Qc6 Re5 44.Kd1 Rf1 45.Kc2 Qd4 46.Qa8 Nd8 47.Bh7! Kh7 48.Rd4 Rc5 (48...Ra1 49.Rd8 bc5 50.Rh8 Kg6 51.Qc6 Kg5 52.Qg2 Kf6 53.Rf8 Ke6 54.Qg6 Kd7 55.Rf7 Re7 56.Re7 Ke7 57.Qg7 Ke6 58.Qa1+–) 1–0. Fritz 6 – Comet B25, 2004.

6.Nf3 0–0 7.Ne5 a6 8.Nd7 Nbd7 9.ba6 ba6 10.Nc3 Nc5 11.Rb1 d4 12.ed4 Qd4 13.Qf3 Rfd8 14.Qe3 Rab8 15.Qd4 Rd4 16.Ba3 Rbd8 17.Ba6 Rd2 18.Rb8 Rc2 19.Rd8 Bd8 20.Bc5 Rc3 21.Bg1 Ra3 22.Bc4 Ra4 23.Bb3 Rf4 24.Be3 Re4 25.Kd2 Ng4 26.Bc5 Ne5 27.Rf1 Bg5 28.Kc3 Nd7 29.Bf2 Rg4 30.g3 Bf6 31.Kc2 Rb4 32.Rd1 Ne5 33.h3 Nc6 34.Rd7 Rb7 35.Bc5 Rb5 36.Be3–/+ Nb4 37.Kc1 c6 38.a4 Rb8 39.Bf4 Ra8 40.g4 Nd5 41.Bc7 Ra7 42.Bd5 ed5 43.a5 c5 44.Kc2 h6 45.h4 Bh4 46.g5 Bg5 47.Kd3 Bf6 48.Ke3 c4 49.Kf4 (49.Kf3 Bc3–+) 0–1. Crafty 19.01 – Comet B25, 2004.

6.Nf3 c6 7.a4 a6 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 cb5 11.Nc3 (11.Bd3 0–0+=) 11...b4 12.Nb5 Qa5 13.Nd7 (13.Nd4 0–0+=) 13...Nbd7 14.Be2 0–0 15.0–0 Ne4 16.Nd4 Bf6 17.g4 (17.Nb3 Qc7–/+) 17...h6 18.Nb3 Qc7 Black gets strong initiative 19.Bd3 Ba1 20.Qa1 Ndc5 21.Nc5 Nc5 22.Be2 Ne4 23.Qc1 (23.Qd1 Ra8–/+) 23...Rc8 24.Bd3 Nc5 25.Qb2 Nd3 (25...b3 26.Be2 bc2 27.Qc2–+) 26.cd3–/+ Qc2 27.Qb4 Qd3 28.Qb7 Rc2 29.Rf2 (29.Qb4 Qe2 30.f5 ef5 31.gf5 Rc4 (31...Qd2?! 32.Qd2 Rd2 33.Rf4–+) 32.Qb8 Kh7–+) 29...Rd2 30.Rd2 Qd2 31.Qb3 (31.Qa8 Kh7 32.Qa7–+) 31...Qe1 (better is 31...Qe2!?–+) 32.Kg2–/+ Qe2 33.Kg3 Qe1 (better is 33...Qf1 34.h3 Qg1 35.Kf3 Qh2 36.Qb8 Kh7 37.Qb1 f5–+) ½–½. Kucharkowski,Jens – Boehme, Freital, 1985.

5.c4 0–0

6.Qc2 c6 7.a4 a5 8.Nf3= Nbd7 (8...dc4 9.Bc4 cb5 10.Bb5=) 9.Na3 (9.cd5 Nd5 10.bc6 bc6 11.Qc6 Bb7=) 9...Qc7 (9...Re8 10.Be2=) 10.Be2 (10.cd5 ed5 11.Be2 Qd6=) 10...Re8 (10...dc4 11.0–0=) 11.d3 (11.0–0 c5=) 11...Bd6 (11...Bb4 12.Nd2=) 12.0–0–0 (12.Bf6 Nf6 13.c5 Be7+=) 12...cb5 (12...Ng4 13.Rdf1=+) 13.ab5 (better 13.Nb5!? Qb6 14.Nd6 Qd6 15.Kd2=) 13...a4 (13...e5 14.cd5 Nd5 15.Qc7 Nc7 16.d4–/+) 14.Kb1 (14.d4 dc4 15.Nc4 Bb4–/+) 14...b6 (14...dc4 15.Nc4 Nd5 16.Rc1–/+) 15.Rc1 Bb7 (15...Qb8–/+) 16.Ka2 (better 16.cd5!? Qc2 17.Rc2 Nd5 18.Nc4=+) 16...Rec8 17.h3 (17.Kb1 Qd8–+) 17...dc4 18.Nc4 Bd5 (18...a3 19.Ba1–+) 19.Qd2 (19.e4 Bc4 20.dc4 e5–+) 19...Ra5 (19...a3 20.Bf6 Nf6 21.Ka1–+) 20.Ka1 (20.Kb1 Bc4 21.Rc4 Qd8 22.Rc8 Qc8–/+) 20...Bc4–+ 21.dc4 (21.Rc4 Nc5 22.Qd1–+) 21...Nc5 22.Bd1 Nb3 (22...Nfe4 23.Qe2–+) 23.Bb3 ab3 24.Kb1 Ra4 (24...Ne4 25.Qd4 f5 26.Rhe1–+) 25.Nd4 (better 25.Qd3!?–/+) 25...Ne4–+ 26.Qe2 Bb4 (26...Ba3 27.Rhd1–+) 27.Nf3 (better 27.Rhd1!?–/+) 27...Ba3 28.Nd4 (28.Ba3 Ra3 29.Rhd1 Qa7–+) 28...Nc5 (better 28...Rca8 29.Nb3 Bb2 30.Qb2 Rb4–+) 29.Rc3? (better 29.Nc6–+) 29...Bb2 30.Qb2 Ra2 31.Qc1 (31.Qa2 ba2 32.Ka2 Ne4–+) 31...b2 (31...Ra1 32.Kb2 Rc1 33.Rcc1 Nd3 34.Kb3–+) 32.Qc2 Ra1 33.Kb2 Rh1 (33...Rh1 34.Ra3 Rh2–+) 0–1. jaddwarrior (2070) – fredstar (2065), ChessWorld.net, 2016.

6.Nc3 Nbd7 7.d4 c5 8.bc6 (8.Nf3 Qa5 9.cd5 cd4 10.Qd4 ed5=) 8...bc6–/+ 9.c5 Rb8 10.Qc2 (10.Rb1!?–/+) 10...e5–+ 11.Nge2 Re8 12.g3 ed4 13.ed4 Nc5 14.dc5 Bc5 15.Bg2? (better is 15.0–0–0 Bg4 16.Nd4 Bd1 17.Nd1 Bd4 18.Bd4–+) 15…Bf2 (15...Bf2 16.Kf2 Ng4 17.Ke1 Ne3–+) 0–1. Baer,Cy (1895) – Krause,Peter (2510), RSS7E easy–64, 2007.

6.cd5 ed5 7.Nf3 =+.

6.cd5 Nd5 7.Nf3 Nf6 (7...c6 8.Qc2=+) 8.Nc3 (8.Qc2 Nbd7=) 8...c6 (8...a6 9.d4=) 9.a4 b6 (9...a6 10.d4=) 10.Be2 (10.d4 a6=) 10...c5 (10...Bb7 11.0–0=) 11.d4 (11.0–0 a6=) 11...Bb7 12.dc5 (12.0–0 Nbd7=) 12...Bc5 13.Qd8 (13.0–0 a6=) 13...Rd8 14.Rd1 (14.0–0 Nbd7=) 14...Nbd7 15.0–0 Nf8 (15...Nd5 16.Nd5 Bd5 17.Bd3=) 16.Rd8 (16.Ne5 Rac8+=) 16...Rd8= 17.Rd1 Rd1 18.Bd1 (18.Nd1 N8d7=) 18...N8d7 19.Kf1 (19.Nd2 e5=) 19...h6 (19...Bd6 20.h3=) 20.Nd4 (20.h3 Bd6=) 20...Bd4 (20...Bd6 21.Nc6=) 21.ed4 Kf8 (21...a6 22.Be2 a5 23.f3=) 22.f3 (22.Ba3 Ke8=) 22...Nd5 (22...Ke8 23.Bc2+=) 23.Nd5 (23.Ba3 Ke8 24.Ne4 Ne3 25.Ke2 A) 25...Nd1? 26.Nd6 (26.Kd1?! Be4 27.fe4 Nf6=) 26...Kd8 27.Nf7 Kc8 28.Kd1+–; B) 25...Nc4 26.Nd6 Nd6 27.Bd6 a6+=) 23...Bd5 24.Ba3 Ke8 25.Kf2 Bc4 (25...h5 26.Bd6+=) 26.Ke3 (26.Bd6 g6+=) 26...a6 (26...Nf6 27.Bd6=) 27.ba6+= Ba6 ½–½. Melzig,Ernst – Straesser,Gerda, 18 sen. Bay. EM2006 Schney op, 2006.

6.Be2 b6 7.cd5 Nd5 (7...ed5 8.Nf3=) 8.Nf3 Nd7 9.0–0 Bb7 (9...a6 10.a4=) 10.a4 (10.Nc3 Nc3 11.Bc3 Nc5=) 10...a5 11.d3 (11.d4 f5=) 11...Bf6 (11...Nc5 12.d4 Ne4 13.Nfd2=) 12.d4 Re8 13.e4 (13.Nbd2 e5=) 13...Nf4 14.e5 Ne2 15.Qe2 Be7 16.Rc1 (16.Nbd2 Bb4=) 16...Rc8 (16...Nf8 17.Nbd2=) 17.Nbd2= Bb4 18.Bc3 Be7 19.h3 (19.Ne4 Nf8=) 19...Nf8 20.Ra2 (20.Ne4!?=) 20...Ng6+= 21.Qe3 Nh4 (21...c6 22.bc6 Bc6 23.Raa1+=) 22.Nh4= Bh4 23.Nf3 Bf3 (23...Be7!?+=) 24.Qf3+= (worse is 24.gf3 c6 25.Rb2 cb5 26.Rb5 Rc4–/+) 24...Bg5 (24...Qd7 25.Ba1+=) 25.Rcc2 (25.Bd2 h6 26.Rc4 Bd2 27.Rd2 Qd5 28.Qd5 ed5+/–) 25...Qd7 26.Qe4 Red8 27.Qg4 (27.f4 Be7=) 27...Be7+= 28.h4. Pfueller,Volker (1605) – Mellenthin,Horst (1765), 7th Berlin–ch Seniors, 2011.

6.Ne2 b6 7.cd5 Nd5 (7...ed5 8.Qc2=+) 8.e4= Nb4 (better is 8...Nf6!? 9.Qc2 a6=+) 9.d4+= Qd7 (9...Bb7!? 10.a3 Be4 11.ab4 Bb4 12.Bc3 Bd6+/–) 10.a3+/– Qb5 11.ab4 Qb4 12.Bc3 Qd6 13.Ng3 Bb7 (13...a6 14.Qf3+/–) 14.Qg4+– g6 15.Nd2 (15.Bc4 Bf6+–) 15...Nd7 (15...f5!? 16.Qe2+–) 16.Nc4 Qc6 17.d5 ed5 (17...Qb5 18.de6 Qb3 19.Rc1+–) 18.ed5 Qd5? (18...Qb5+–) 19.Rd1 Qe6 (19...Nf6 20.Bf6 (20.Rd5?! Ng4 21.Rd7 Rfe8+=) 20...Bb4 21.Nd2 Qe6 22.Qe6 fe6 23.Be5+–) 20.Qe6 fe6 21.Rd7 Rfe8 22.Rc7 Bd5 23.Kd2 Rac8 24.Rc8 Rc8 25.Ne3 Bb7 (25...Rd8 26.Bd3+–) 26.Bd3 Rd8 27.Kc2 Kf7 28.Be4 Ba6 (28...Be4 29.Ne4 Rc8 30.Rd1+–) 29.Ra1 Bc8 30.Ra7 Rd7 31.Ra8 (better is 31.Rd7 Bd7 32.Nc4 Ba4 33.Kb2 Bc5 34.Ne5 Ke7+–) 31...Bb7 (31...Rc7 32.Ng4+–) 32.Rh8 Be4 33.Ne4 h5 34.Nc4 b5 (34...Rc7 35.Ng5! Bg5 36.Rh7 Ke8 37.Rc7+–) 35.Ne5 (35…Kg7 36.Nd7 Kf7 37.Rb8+–) 1–0. marekt – Hanging_Pawns, ChessWorld.net, 2004.

6.Ne2 dc4 7.Nec3 =+.

6.Nf3 a6 =+.

6.Nf3 dc4 7.Bc4 a6 =+.

6.Nf3 c6 7.a4 (--> 5.Nf3 c6 6.a4 0–0 7.c4).

6.f4 c6 7.Nf3+= Nbd7 8.Be2 Ne4 (8...dc4 9.bc6 bc6 10.Nc3+=) 9.d3 (9.Nc3 Nb6=) 9...Nd6 (9...Bf6 10.Qc2 Qa5 11.Kf1+=) 10.a4 (10.Nc3 dc4 11.dc4 Qb6+=) 10...Bf6 (better is 10...dc4 11.dc4 Qb6+=) 11.Ne5? (11.Nc3 Qb6 12.Qd2 Nc5–/+) 11...Qb6 (11...Nf5!? 12.bc6 Ne3 13.Qd2 Ne5 14.Qe3 Nc4 15.dc4 Bb2 16.Ra2–+) 12.d4 (better is 12.Bd4 Qc7 13.Nd2–/+) 12...Ne4?? (better is 12...Nf5 13.Kf2 Ne5–/+) 13.0–0+= Ne5 14.c5 (14.fe5 Bg5 15.Qd3 Bd7+=) 14...Qc7 (14...Qa5 15.fe5 Bg5 16.Qd3+=) 15.fe5 Bg5 16.Qd3 Bd7 17.Nd2 (17.Nc3 f5=) 17...Nd2 18.Qd2 Qd8 (18...f6 19.ef6 Bf6 20.Bc3=) 19.g3 Qe7 20.b6 ab6 (20...f5!?+=) 21.cb6+/– Rfc8 (better is 21...Qd8!? 22.Ba3 Ra4 23.Bf8 Ra1 24.Ra1 Kf8 25.Qb4 Ke8+–) 22.a5+– Qd8 (22...Rab8 23.Ba3 Qe8 24.Bd6+–) 23.Kg2 (better is 23.Ba3!?+–) 23...c5 24.dc5 Rc5 25.Bd4 Rcc8 (25...Rc6 26.a6 ba6 27.Rfb1+/–) 26.Rfc1 (26.a6 Ra6 27.Ba6 ba6+–) 26...Rc1 27.Rc1 Rc8? 28.Rc8?? Qc8 29.h4 Be7 30.Qc3 Qc3 31.Bc3 Bc5? 32.Bd4+– Bd4 33.ed4 Bc8 34.g4 f6?? 35.Kg3 Kf7 36.Bd3 g6?? 37.ef6+– Kf6 38.g5 Kf7 39.Kf4 Kf8 40.Ke5 Ke7 41.Bb5 (41.Bb5 Kf7 42.Bd7 Bd7 43.a6 Bc6 44.a7 Ba4 45.a8Q Bc6 46.Qh8 h5 47.Qh7 Ke8 48.Ke6 Bd7 49.Qd7 Kf8 50.Qf7#) 1–0. Rheindt,Stefan (2015) – Zornack,Andre (1985), RSS4D easy–32, 2007.

6.f4 Nbd7 7.Nf3 –/+.

6.Ne2 a6

7.a4 ab5 8.ab5–/+ Ra1 9.Ba1 Nbd7 (9...dc4 10.Nec3–/+) 10.cd5 (10.Nf4 dc4 11.Bc4 e5–/+) 10...Nd5 11.Ng3 (11.e4 Nc5 12.Qc2 Nb4–+) 11...N7f6 (11...e5 12.Qf3 Nb4 13.Na3–/+) 12.Qc1 (12.e4 Nf4=+) 12...Ne8 (12...Bd6 13.Bd4–/+) 13.Nc3 Bf6 14.Qc2 Nc3 15.Qd1?? Bh4 16.Bc3 Bd7 17.f3 g6 18.f4 Bg3 (18...Nd6!? 19.b6 c5=+). Bulcourf,Carlos (2295) – Spata,Rafael, San Isidro VALLE, 1993.

7.a4 dc4 8.ba6 Ra6 –/+.

7.a4 dc4 8.Nec3 –/+.

7.a4 c6 8.Ng3 (8.Nf4 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 Bd6=+) 8...dc4 9.Ke2? (better is 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5=+) 9...ab5–+ 10.ab5 Ra1 11.Ba1 c5?? (better is 11...cb5!? 12.d3–+) 12.d3 (12.Ke1 b6–/+) 12...Qc7 (12...cd3 13.Qd3 Qa5 14.Be5–+) 13.Na3 (13.dc4 Rd8 14.Qc2–/+) 13...Bd6 (better is 13...cd3 14.Qd3 Rd8–+) 14.Kf3? (better is 14.Nc4 Nfd7 15.Ke1=) 14...b6 (better is 14...e5 15.h3 cd3–/+). Bulcourf,Carlos (2295) – Incutto,Carlos, Olivos VALLE, 1993.

7.Qa4 Nbd7 8.cd5 Nc5 =+.

7.Nf4 dc4 8.Bc4 ab5 9.Bb5 Qd6 =+.

5.c4 dc4

6.Bc4 b6 7.Nf3 (7.Qf3!? c6 8.g4+=) 7...Bb7 (7...a6 8.a4=) 8.0–0 Nbd7 (8...a6 9.d3=) 9.d4 (9.Nd4 Nb8+=) 9...c5 (9...a6 10.a4=) 10.bc6 (10.dc5 Nc5 11.Qe2 0–0=) 10...Bc6= 11.Nc3 Rc8 (11...0–0 12.Rc1=) 12.Ba6 Rc7 13.Nb5 Bb5 14.Bb5 0–0 15.Rc1 Nb8 (15...Rc1 16.Qc1 Qa8 17.Bc6+=) 16.Qa4 (16.Qe2 Bd6+/–) 16...a6 17.Rc7 (17.Ba6? Ra7–+) 17...ab5? (better is 17...Qc7 18.Ba6 Na6 19.Qa6 Rc8+/–) 18.Qa7 Bd6 19.Rc2 Ne4 20.Rfc1 Nd7 21.Qb7 f5 22.Rc8 Qe7 23.R1c6 b4 24.Rf8 Kf8 25.g3 h6 26.Nh4 Kf7 27.Rc8 g5 28.Nf3 Kg6 29.Qa8 Ndf6 30.Ne5 Be5 31.de5 Nd5 32.Rg8 Kh5 33.Qe8 Qe8 34.Re8 Nc5 35.Bd4 Nc3 36.Rb8 Na2 37.Rb6 Nd3 38.Re6 b3 39.Rb6 Nab4?! 40.Rb7 (40...Nc6 41.e6+–) 1–0. Lippmann,Ulrich (2075) – Hentzschel,Erhard (1995), 39sen.LEM N'sachsen, 2005.

6.Bc4 Bd7 7.Nf3 0–0 (7...c6 8.a4=) 8.0–0 (8.Qc2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6=) 8...Ne8 (8...a6 9.a4=) 9.d3+= Bf6 (9...Nd6 10.Qb3+=) 10.Bf6 Qf6 11.d4 (11.Nbd2 Nd6+=) 11...Qd8 (11...Nd6!? 12.Qe2 a6 13.ba6 Na6=) 12.Nbd2 Nf6 (12...a6 13.ba6 Na6 14.Qc2+/–) 13.Ne5 Qe8 (13...a6 14.ba6 Na6 15.Qb3+/–) 14.a4 (14.Qf3 Bb5 15.Bb5 Qb5 16.Rfb1+–) 14...b6 (14...a6 15.Qe2+/–) 15.Ndf3 (15.Qf3!? c6+–) 15...Bc8 16.Qb3 (16.Qc2 c5+–) 16...Nbd7 (16...a6 17.Rfc1+/–) 17.h4 (better is 17.Qc2!?+/–) 17...Ne5 18.de5 Ne4 19.h5 Nc5 20.Qc2 Bb7 21.Ng5 f5 (better is 21...g6+/–) 22.ef6+– Qh5 23.Ne6 Be4 (23...Rf7 24.Nc5 Bg2 25.Bf7 Kf7+/–) 24.Nf4 Kh8 (24...Rf7 25.Qa2 Qe5 26.Bf7 Kh8+–) 25.Nh5 (better is 25.fg7 Kg7 26.Nh5 Kh6 27.Qd1+–) 25...Bc2 26.Bd5 (26.fg7) 26...Rad8?? (26...gf6 27.Ba8 Ra8+–) 27.Bc6 (27.fg7) 27...Bd3?? (27...g6!? 28.Nf4 Rf6+=) 28.Rfd1 (better is 28.fg7 Kg8 29.gf8R Kf8 30.Rfd1+–) 28...Na4?? (better is 28...gf6 29.a5 Be4 30.Rd8 Rd8 31.ab6 ab6+/–) 29.Ra4 (29.fg7 Kg8 30.gf8R Rf8 31.Rd3 Nc5 32.Bd5 Kh8+–) 29...Bc2 (29...gf6 30.Ra7 f5+–) 30.Rd8 (better is 30.fg7 Kg8 31.gf8R Rf8 32.Rg4 Bg6+–) 30...Rd8 31.Ra7 (better is 31.Rd4 Rg8 32.f7 Bg6 33.fg8R Kg8 34.Rd8 Kf7 35.Rd7 Ke6 36.Ng7 Kf6+–) 31...g6 (31...gf6 32.Rc7 h6 33.Nf6+–) 32.Nf4 Bf5 33.Rc7 Rf8 34.f7 (34.Nd5 Be6 35.Nb6 Rf6+–) 34...Kg7 35.Be8 Kh6 (35...g5 36.Nd5+–) 36.Rc6 Kg5 (36...Kg7 37.e4! Bg4 38.Rb6+–) 37.Rb6 Kh6 38.Rd6 Bc8 39.b6 Bb7 40.Rd7 (better is 40.Ne6 Rf7 41.Bf7 Bc8+–) 40...Bc6 41.Rc7 (41.Ne6 Rh8 42.Rd4 g5 43.Bc6 Rf8 44.Nf8 Kg7 45.b7 h6 46.Rd7 g4 47.Ne6 Kg6 48.f8Q Kh5 49.Rd5 Kh4 50.Qh6#) 41...Be8 (42.b7 Bf7+–) +–. abt – georgizh, Live Game Caissa's Web, 2004.

6.Bc4 Nbd7 7.d4= Nb6 (7...a6 8.ba6 ba6 9.Nc3=) 8.Qb3 (8.Bd3!?=) 8...Nc4=+ 9.Qc4 b6 (9...a6 10.Ba3=+) 10.Nf3 (10.Ba3 Bd6=) 10...Bb7 11.Nbd2 (11.0–0 Bd5 12.Qc2 Bf3 13.gf3 Qd5=) 11...Rc8 (11...a6 12.ba6 Bd5 13.Qb5 c6 14.Qe2=) 12.0–0 (12.Qa4 c5=) 12...c5 (12...c6 13.Ne5 c5 14.Rfd1=+) 13.bc6 (13.Qa4 Rc7=) 13...Bc6 14.Qe2 (14.Ne5 Qd5 15.Nc6 Qc4 16.Nc4 Rc6+=) 14...Qd5=+ 15.Qc4?? (15.a4 Bb4–/+) 15...Qd8 16.Rac1 Bb7 17.Qb5 Qd7= 18.Rc8 Bc8 19.Qd7 Nd7 20.Rc1 0–0 21.Rc7+= Bb4 22.Ra7+/– Nf6 23.a3 Bd2 24.Nd2+– b5 25.f3 Bd7 26.e4 Rd8 27.d5 Ne8 28.Bc3 Rc8 29.de6 Be6+/– 30.Bb4 h6 31.Rb7+– Nc7 32.Ba5 Na6 33.Rb5 Rc1 34.Kf2 Rc2 35.Kg3 Ra2 36.Bb4?? Nb4=+ 37.ab4 Rd2–/+ 38.Rb8 Kh7 39.b5 Bc4 40.b6 Rb2 41.Kf4=+ f6 42.Ke3 Rg2 43.Kd4 Ba6 44.Ra8 Bb7 45.Rb8 Ba6 46.Ra8 Rd2 47.Kc5 Rc2 48.Kd6=+ Bb7 49.Rb8 Rc6 50.Kd7 Rb6 51.Kc7 Rb2 52.Rb7 Rh2–/+ 53.Kd6 Rh3 54.Rb3 Kg6 55.Ke6 h5 56.Kd5 Rg3 57.Rb2? Kg5 58.Rb7 Kf4 59.e5 fe5 60.Rf7 Ke3 61.Ke5 h4 62.f4 h3 63.Ra7 Kf3 64.Ra3 Kg4 65.Ra7 Kh4 66.Ra8 Rg6 67.f5 Rg4 68.Ra2 Rg5 69.Ra4 Rg4?? 70.Ra2 Rg2 71.Ra4 Kg3 72.Ra3 Kh2 73.Rf3 Re2 74.Kf4 Kg2?? 75.Rg3= Kh2 76.Rf3 Rc2 77.Ra3 Rf2?? 78.Ke3?? Kg2 79.Ra7 Rf3 80.Ke2 Rg3 81.Ke1?? h2 82.Ra2 Kh3 (83.Rh2 Kh2–+) 0–1. Melzig,Ernst – Jeske,Guenter (1625), Bayern–ch Seniors, 2002.

6.Bc4 0–0

7.a4 b6 8.Nf3 Bb7 9.d3 c6 (9...Bb4 10.Nbd2=) 10.0–0 cb5 (10...a6 11.Nbd2=) 11.ab5 Nbd7 (11...a6 12.ba6 Na6 13.e4=) 12.Nbd2 (12.Qe2 Qb8+=) 12...Nc5 (12...Bd6 13.Qe2+=) 13.Ba3 (13.Bf6 Bf6 14.d4 Ne4+=) 13...Ncd7 (13...a5 14.ba6 Na6 15.Be7 Qe7 16.Qb3=) 14.Qb3 (14.Qe2 Re8+=) 14...Nc5 15.Qc2 (15.Qb2 Bd6+=) 15...h6 (15...a5 16.Rfc1+=) 16.d4 Ncd7 (16...Nce4 17.Ne5+=) 17.Qb3 (17.Rfc1 Ba3 18.Ra3 Qb8+–) 17...Ne4+= 18.Rfc1 Ba3 19.Qa3 Ng5 (19...Nd2 20.Nd2 e5 21.d5+=) 20.Ne1 (20.Be2 Nb8+–) 20...Ne4 (20...e5+=) 21.Nef3 (21.Ne4 Be4 22.Qd6 Nf6+–) 21...Nd2 (better 21...Ng5!?=) 22.Nd2+– Qg5 (22...Qh4 23.Be2 Rfc8 24.Rc8 Rc8 25.Qd6+–) 23.Bf1 Rfc8 (23...a5 24.Rc7 Bc8 25.Ne4+–) 24.Rc8 Rc8 (24...Bc8 25.Ne4 Qd8 26.Bc4+–) 25.Rc1 (25.Qd6!? Qd5 26.Qe7+–) 25...Rc1+= 26.Qc1 Qd8 27.Qa3 Qb8 28.Qe7 Nf6 29.Nc4 Bd5? (better 29...Nd5!? 30.Qd6 Qa8+–) 30.Ne5+– Qb7 31.Qb7 (better 31.Qd8 Kh7 32.Qf8+–) 31...Bb7+= 32.Be2 (32.Nc4 Ne8+=) 32...Nd5 33.Bc4 (33.Bh5 g6 34.Bf3 Kf8+=) 33...Nc7 (33...Kf8 34.h4+=) 34.f3 (34.Bd3 a6=) 34...a6 (34...f6 35.Nc6 Bc6 36.bc6=+) 35.ba6 Ba6 (worse 35...Na6 36.Nd7+–) 36.Kf2 (36.Ba6 Na6 37.Kf2 b5=) 36...Bc4 37.Nc4 b5 38.Nb2 f6 (38...b4 39.e4=) 39.e4 Kf7 40.Ke3 Ke7 41.Kd3 Kd6 (41...g5 42.Kc3=) 42.Kc3 Na6 43.Nd3 e5 (43...g6 44.e5 Ke7 45.Nc5+=) 44.d5 g6 45.g3 (45.h4 h5+=) 45...f5 (45...h5 46.h3+=) 46.Kb3 (46.h4 h5+=) 46...fe4 47.fe4 h5 48.h4 Nc7 (48...Kc7 49.Ne5 Nc5 50.Kb4+–) 49.Kb4 Ne8 (49...Nd5 50.ed5 Kd5 51.Kb5=) 50.Kb5 Nf6 51.Nf2 (51.Nc5 Ne4 52.Ne4 Kd5+–) 51...Nh7 (51...Ne4 52.Ne4 Kd5 53.Ng5+–) 52.Nh3 (52.g4!? Nf6 53.g5 Nd5 54.ed5 Kd5+–) 52...Nf6+– 53.Ng5 Ng4 (53...Ne4!? 54.Ne4 Kd5+–) 54.Kc4+– Nf6 55.Kd3 Ke7 56.Nf3 Kd6 57.Ng5 (57.Ke3 Ng4 58.Ke2 Nf6+–) 57...Ng4?? (57...Ke7 58.Ke3 Nd7+–) 58.Ne6+– Ke7 59.Ng5 Nf6?? (59...Kd6 60.Ke2+–) 60.Nf3 Kd6 61.Ng5 (61.Nd2 Ng4+–) 61...Ng4 62.Ne6 Ke7 63.Ng5?? (better 63.Ke2+–) 63...Nf6?? (63...Kd6 64.Ke2 Kc7+–) 64.Nf3 ½–½. jaddwarrior (2015) – jwbtuna (1655), ChessWorld.net, 2016.

7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nd5 11.0–0 Nb6 (11...Nd7 12.d3=) 12.d3 Nc4 13.dc4 Qd1 14.Rd1 b6 (14...f6 15.Bb2=) 15.Nbd2 (15.Be5 Rd8 16.Rd2 Rd2 17.Nbd2 Bd8+=) 15...Nd7 (15...f6 16.Bc3=) 16.Nd4 (16.Ne4 f6=) 16...Bb7 17.f4 (17.Bc3 Ra8=) 17...Ra8 18.N2b3 (18.N4f3 Ra2=) 18...Nc5 19.Nc5 Bc5 20.Kf1 (20.Kf2 Ra2 21.Ne2 f6=) 20...Ra3 (20...h5 21.Kf2 Ra2 22.Ne2 Bg2 23.Bg7 Bh3=+) 21.Nc6= (21...Bc6 22.bc6=). bentengutama (1900) – negracapa (2380), net–chess.com, 2003.

7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.0–0 Nb6 12.Be2 Qd5 13.Nc3 Qf5 14.d4 Bd7 Attacking the isolated pawn on b5 15.Ne5 Bd6 (15...Qg5 16.f4 Qh4 17.Bf3+=) 16.Nd7 (16.f4 Ne4+/–) 16...Nfd7 17.Bf3 Rb8 18.Qb3 e5 19.Ne4 Be7 20.Rc1 Ra8 (better is 20...ed4!? 21.Ng3 Qe6 22.Qe6 fe6 23.Bd4 Bd8+/–) 21.Ng3+– Qe6 22.Qe6 (22.Rc7?? Qb3 23.Rc1 Ra2 24.Bb7 Qa3–+) 22...fe6 23.Bb7 Ra7 24.Bc6 Bf6 25.de5 (25.Ne4!? ed4 26.Nf6 gf6 27.Bd4 Ra5+–) 25...Be5 26.Be5 Ne5 27.h3 Nc6 28.Rc6 Kf7 29.Ne4 Nc8? (better is 29...h6+–) 30.Ng5 Kf6 31.Nh7 (31.f4 Ke7 32.Ne6 Nd6 33.Rc7 Rc7 34.Nc7 Kd7+–) 31...Ke5? (better is 31...Ke7+–) 32.Nf8 Nd6 33.b6 (better is 33.Nd7!? Kd5 34.Rc5 Ke4+–) 33...cb6 34.Rb6 Rf7 35.Ng6 Kf6 (35...Kd5 36.Ra6 Kc5 37.Nf4+–) 36.Rd6 Kg6 37.Re6 Kf5 38.Re8 Rb7 39.g3 g5 40.Kg2 Rb2 41.Rf8 Ke5 (41...Kg6 42.h4 gh4 43.gh4+–) 42.h4 (better is 42.g4!? Kd5+–) 42...gh4 43.gh4 Rb6 44.Rg8 Kf5 45.Kg3 Rh6 (45...Rb1 46.Rg5 Ke4 47.Rg4 Kf5 48.e4 Ke5 49.f3+–) 46.f3 Rh7 47.e4 Ke5 48.Rg5 Kf6 49.Kg4 White intends h5 49...Rh6 50.h5 Kf7 51.f4 Rb6 52.e5 Rh6 (52...Ra6 53.Rg6! Ra1 54.e6 Ke7 55.f5 Rg1 56.Kf4 Rf1 57.Kg5 Rg1 58.Kh6+–) 53.Rg6! Rg6 (53...Rh8+–) 54.hg6 Kg6 55.f5 Kf7 56.e6 Kf6 57.Kf4 Ke7 58.Ke5 1–0. mr5reasons1 (1670) – ydebilloez (1710), gameknot.com, 2013.

7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.0–0 Nb6 12.Be2 Qd5 13.Nc3 Qf5 14.d4 h6 15.Ne5 (better 15.Bd3 Qh5 16.Ne2+–) 15...Nfd7?? (better 15...Rd8+–) 16.Bd3+– Qg5 17.Ne4 Qh4 18.g3 Qh3 19.f4 Ne5 (19...Nd5 20.Re1 N7f6 21.Nf2+–) 20.Nf2 (better 20.de5 Nd5 21.Bd4+–) 20...Qf1 21.Bf1 Ng6 (21...Nec4 22.Qc1 Nd6 23.e4+–) 22.Qc2 Bd6 (22...Bd8 23.e4+–) 23.e4 f5 (23...Re8 24.h4+–) 24.Bg2 fe4 (24...Rf7 25.Bc3 fe4 26.Ne4+–) 25.Ne4 Rd8 (25...Ne7+–) 26.Nd6 (26.Nd6 cd6 27.Qg6+–) 1–0. Pierre – Cleary, internet, 2020.

7.Nf3 a6 8.Bf6 Bf6 9.d4 =+.

7.Nf3 b6 8.0–0 Bb7 9.a4 c5 10.d4 cd4 11.Nd4 Nd5 12.Nd2 Nd7 13.Rc1 Rc8 14.Be2 Nc5 15.Nc4 Nf6 (15...Qc7 16.Nb3=) 16.Ne5 Nce4 (16...Qc7 17.Nec6 A) worse is 17...Bc6 18.Nc6 (worse is 18.bc6 Rcd8=) 18...Ne8 19.Bd4+/–; B) 17...Bd6=) 17.Nec6 Bc6 18.Nc6 Qc7 19.Be5 Qb7 (19...Bd6 20.Bd6 Nd6 21.Na7 Qa7 22.Qd6 Nd5+/–) 20.Ne7 (better is 20.f3!? Nc5 21.Ne7 Qe7 22.Bd6+–) 20...Qe7+= 21.Bf3 Rc1 22.Qc1 Qb4 23.Qc2 (23.Qa1 Nd2 24.Rd1 Nf3 25.gf3 Qh4+=) 23...h6 (23...Nd2!? 24.Rd1 Nf3 25.gf3 Qh4=) 24.Rd1 Ng5? (better is 24...Nc5+/–) 25.Bd6+– Nf3 (25...Nf3 26.gf3 Qh4 27.Bf8 Kf8 28.Rd8 Ne8+–). algernon (2495) – tomy (2410), net–chess.com, 2016.

7.Nf3 b6 8.0–0 Bb7 9.a4 c6 10.Nc3 cb5 11.ab5 Nbd7 12.Be2 Nc5 13.d4 Nce4 14.Ne4 Ne4 15.Nd2 Nd2 16.Qd2 Qd5 17.Bf3 Qb5?? (better is 17...Qd7 18.Bb7 Qb7+=) 18.Bb7+– Rab8 19.Bf3 (19.Ra7?! Qd7+/–) 19...Bb4 20.Bc3 Be7 (20...Bc3 21.Qc3 Rfc8+–) 21.Ra7 Bf6 22.Qb2 Qb2 23.Bb2 Rfc8 24.Rc1 Rc1 25.Bc1 1–0. Hal1958 – Sarx, playchess.de, 2003.

7.Nf3 b6 8.0–0 Bb7 9.Nc3 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.d4 Bb4 14.Qb3 Bf3 (14...Qe7 15.Rc1=) 15.gf3 (15.Qb4 Nd5 16.Nd5 Bd5+=) 15...Bc3 16.Bc3 Ne8 17.Kh1 Nef6 18.Rg1 c5?? (better is 18...Qa8 19.e4 Rc8+=) 19.bc6+– Nb8 20.d5! ed5 (20...ed5 21.c7 Passed pawn; 20...Nd5 21.Bg7 Pinning (21.Bg7 Deflection; 21.Bg7 Clearance)) 21.Bd5! Nd5?? (21...Qd5 22.Bf6 Deflection (22.Bf6 Overloading); 21...Nd5 22.Rg7 Deflection) 22.Rg7 Kh8 23.Rf7 Kg8 24.Rg7 Kh8 25.Qd5!! Qd5 (25...Qd5 26.Rg2 Mate attack) 26.Rg1 1–0. Pondlife – Arsenio, playchess.de, 2004.

7.Nf3 b6 8.0–0 Bb7 9.d4 a6 10.ba6 (10.a4 c6=) 10...Ba6 11.Ba6 (11.Qc2 Bc4 12.Qc4 c6=+) 11...Na6 12.a3 (12.Nc3 Bd6=) 12...c5 (12...Qd6 13.Qc2=+) 13.Nbd2 (13.Qc2 Qd6=+) 13...Qd5=+ 14.Qc2 cd4 (14...Rfc8 15.e4 Qh5 16.Rfc1=+) 15.Bd4= b5 (15...Rfc8 16.Qb2=) 16.Rfc1 b4 (16...Qh5 17.e4=) 17.a4 (17.e4 Qh5 18.ab4 Nb4+=) 17...Nd7 (17...Rfb8 18.Nb3=) 18.Nb3 (18.e4 Qh5+=) 18...e5 19.e4 Qe6 20.Be3 Nf6 21.Ng5 Qd7 22.Rd1 Qc7 23.Qc7 Nc7 24.h3 (24.a5 Rfc8+=) ½–½. Woschkat,Karl_Heinz – McKinley,Rocky, IECG, 1996.

7.Nf3 b6 8.0–0 Bb7 9.d4 c5 10.a4 Nbd7 11.Nbd2 Rc8 12.Rc1 Ne4 13.Ne4 Be4 14.Bd3 Bg6 (14...Bd3 15.Qd3 Qc7 16.Rfd1+=) 15.Bg6+– hg6 16.Qe2 Bf6 17.Ba3 Be7 18.Rfd1 cd4?? (better 18...Qc7+–) 19.Rc8+– Qc8 20.Be7 Re8 21.Ba3 1–0. Guest – GuestMaerk, internet, 2020.

7.Nf3 b6 8.d3 Bb7 9.Nbd2 c5 10.0–0 Nbd7 11.e4 Qc7 12.Qb3 h6 13.a4 Rad8 (13...a5 14.ba6 Ba6 15.e5=) 14.a5+= Bd6 15.ab6 ab6 (15...Qb6? 16.e5 Be7 17.Bc3 Bf3 18.ef6 (worse 18.Nf3 Nh7+–; 18.gf3?! Nh5+=) 18...Bf6 19.Ra6 (19.gf3?! Be5+–) 19...Bc3 20.Nf3+–) 16.Ra7 Ra8 (16...Bf4 17.Rfa1+=) 17.Rfa1 (17.Ra8 Ra8 18.Be6 fe6 19.Qe6 Kh8+=) 17...Ra7 18.Ra7 Ra8 (18...Bf4 19.g3 Bd2 20.Nd2+=) 19.Qa4 (better 19.Ra8!? Ba8 20.Be6 fe6 21.Qe6 Kh8 22.e5 Ne5 23.Ne5 Be5 24.Be5+–) 19...Ra7= 20.Qa7 Qb8 21.Qa1 (better 21.Qb8 Bb8 22.Kf1=) 21...Qa8?? (better 21...Bf4=) 22.e5 Qa1 23.Ba1 Bf3 24.Nf3 (24.ed6?! Bb7 25.Bf6 Nf6=; 24.gf3? Be5 25.Be5 Ne5–+) 24...Ne5 25.Ne5 Bc7 26.f3 Kf8 27.Kf2 Ke8 28.g3 g6 (28...Nd5 29.Nc6 f6 30.f4+–) 29.Ng6! fg6 (29...Nd7 30.Nh4+–) 30.Bf6 Kf7 31.Bc3 Ke7 32.f4 h5 (32...Bd6 33.Bg7+–) 33.h4 Bd6 34.Be5 Be5 35.fe5 Kf7 36.Ke3 Ke7 (36...g5 37.hg5 Kg6 38.Kf4+–) 37.Kf4 Kf7 38.Kg5 (38.Kg5 Ke7 39.Kg6+–) 1–0. jaddwarrior (2040) – kratz (1830), ChessWorld.net, 2017.

7.Nf3 c5 8.a3 (8.Nc3 a6+=) 8...Bd7 (8...Nbd7 9.0–0=) 9.0–0 (9.Nc3 Be8+/–) 9...b6 (9...a6 10.a4+=) 10.Qc2 Qc7 (10...a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Bc8+=) 11.Be5+– Bd6 12.Bf6 gf6 13.Qe4 Kh8 (13...f5!? 14.Qa8 Rd8+–) 14.Qa8 (14.Qa8 Nc6 15.Qf8 (15.bc6?! Ra8 16.cd7 Qd7+/–) 15...Bf8 16.bc6 Bc6 17.Nc3+–) 1–0. Heini – chessenemy, internet, 2016.

7.Nf3 Bd7 8.0–0 c6 9.a4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 cb5 13.Nb5 Nc6 14.d4 Qa5 15.Ne5 Ne5 16.Qa5 Nc4 17.Qc7 Nb2 18.Qb7 Nc4 19.Rc1 Nd6 (19...Na5 20.Qa6 Bb4 21.Nd6+=) 20.Nd6+– Bd6 21.Qa6 (21.e4 Rb8 22.Qa7 Rb5+–) 21...Be7 22.Rc7 Rb8 23.g3 Rd8 24.Qa7 Kf8 25.f3 Ke8 26.e4 h6 27.Rb7 Ng8 28.Kg2 Nf6 29.Rb8 Rb8 30.Qb8 Bd8 31.Qe5 White plans d5 31...Kf8 32.d5 ed5 33.ed5 Ne8 34.d6 Be6 35.Qc5 Bd7 36.Qa7 Be6? (better 36...Nf6+–) 37.Qa3+– Bd7 38.Qa8 Be6?? (38...Bf6 39.Qb7 Be6+–) 39.Qd8 1–0. onur604 (2275) – Wladzimir (2105), lichess.org, 2020.

7.Nf3 Nbd7 8.0–0 Nb6 9.Be2 Nfd5 10.Nc3 Nc3 11.Bc3 Nd5 12.Bd4 b6 13.Ne5 (13.Qc2 a6+=) 13...Bb7 14.f4 Bd6 (14...a6 15.ba6 Ba6 16.Nc6=) 15.Nc6 Bc6 16.bc6 a5 17.Qc2 Qe8 18.Qc4 (18.Rac1 e5 19.Ba1 Rd8+=) 18...Rb8 (18...Rd8 19.Bf3=) 19.Bf3+= Nb4 (19...Rd8!?+=) 20.a3+– Nd5 21.Bd5 ed5 22.Qd5 Qe7 23.Qb3 Rfd8 24.Qc3 f6 25.Rf2 (25.Rfb1 Qe6+–) 25...Kh8 26.Rf3 Qe4? (better 26...Bc5+–) 27.Bf6!+– Rg8 (27...gf6 28.Qd4 Double attack (28.Qd4 Decoy)) 28.Rg3 Bf8 29.Be5 Rc8 1–0. GuestSBKR – GuestLLRZ, freechess.org, 2018.

7.Nf3 Nbd7 8.0–0 Nb6 9.Be2 Bd7 10.Ne5 a6 11.a4 (11.ba6 ba6 12.Nc3 Bd6+=) 11...ab5 12.ab5 Ra1 13.Ba1 Bd6 14.Nd7 Nbd7 15.Nc3 b6 (15...Nb6 16.d3=) 16.d4 h6 17.Bf3 Nh7 18.Qb3 1–0. GuestSBKR – GuestFNCM, freechess.org, 2018.

7.Nf3 Nbd7 8.0–0 Nb6 9.Be2 h6 10.Nc3+= Nbd5 (10...Qd6 11.a4+=) 11.Ne5 Nc3 (11...Bd7 12.Qb3+–) 12.Bc3+– Nd5 (12...Bd6 13.f4+–) 13.Bb2 (13.Bd4 Bd6+–) 13...Bf6 (13...Re8 14.Qb3+–) 14.f4 Qe7 (14...Bd7 15.e4 Ne7 16.d4+–) 15.Rc1 Rd8 16.Qb3 Nb6? (better 16...Qb4 17.Qb4 Nb4+–) 17.Ba3 Qe8 (17...Rd6 18.Ng4+–) 18.Rc7 Rd2 (18...Be5 19.fe5 Rd7 20.Rc2+–) 19.Bh5 g6 20.Rf7 Be5 (20...Qf7 21.Nf7 Kf7+–) 21.fe5 gh5 (21...Qf7 22.Rf7 Kf7 23.Qb1 Rd1 24.Qd1 Nd7 25.Qf3 Kg7 26.Qg3 Nf8 27.Bf8 Kh8 28.Qg6 Bd7 29.Qg7) 22.Rf8 Qf8 (22...Kg7 23.Re8 Rg2 24.Kg2 Bd7 25.Re7 Kh8 26.Qd3 Bc6 27.bc6 Rg8 28.Kh3 Rg7 29.Rf8 Rg8 30.Rh7) 23.Rf8 Kg7 24.e4 Nd7 (24...Rd1 25.Qd1 Nd7 26.Qf3 Nf8 27.Bf8 Kg6 28.Qf6 Kh7 29.Qg7) 25.Qg3 Kh7 26.Qg8 1–0. Vendelo – Ruuttu, internet free game, 2018.

7.Nf3 Nbd7 8.d4 Nb6 9.Bd3 Bb4 10.Nbd2 Bd7 11.0–0 c6 12.a4 Qe7 (12...cb5 13.ab5 Nbd5 14.Qb3+=) 13.Ne5 (13.Qb3 Rfc8+=) 13...cb5 14.Nd7 (14.ab5 Rfc8+=) 14...Qd7 (14...Nfd7 15.ab5 Rfc8 16.Qe2=) 15.Bb5 (15.ab5 Rfc8+=) 15...Qe7 (15...Qd5 16.Bd3=) 16.Nf3 Rfc8 (16...Rac8 17.Ne5=) 17.Qb3 Ne4 (17...Nbd5 18.Rfc1=) 18.Rac1 (18.Bd3 Nc3+=) 18...Nd5 19.Bd3 Ndc3? (better is 19...Nef6+=) 20.Rc2+– a5 21.Rfc1 Qf8 22.Ne5 b5 23.Bc3 Nc3 24.Nd7 ba4 25.Qb2 Qd8= 26.Nc5 a3 27.Qa1 e5?? 28.Bf5 Rc7 29.Rc3 Bc3 30.Qc3 ed4 31.Qd4?? Qe7–/+ 32.g3 a2 33.Nb3–/+ Rc1 34.Nc1 Rd8 35.Qa4 Qe5 36.Bh7–/+ Kh8?? 37.Na2+= Rd2 38.Bc2 g6= 39.Nc1 Qc7?? 40.Qa1+– Kg8 41.Bb3?? Qc5? 42.Qb1 Qc6= 43.Nd3 a4?? 44.Bf7!+– Kg7 45.Ne5 Qf6 46.f4 Qd6 47.Qb7 Kh6 48.Bb3! Qa3 49.Ng4 Kh5 50.Nf6 (50...Kh6 51.Qh7#) 1–0. Kuhn,Heinz – Hauck,Bjoern, Westpfalz op, 2000.

7.Nf3 Nbd7 8.d4 Nb6 9.Bd3 Bd7 10.0–0+= c6 (10...Nfd5 11.Nc3+=) 11.a4 Nfd5 (11...Nbd5 12.Ne5+=) 12.a5+– Nc8 13.Ne5 (13.a6!? Qc7 14.Qe2+=) 13...cb5= 14.Qh5 (14.Nc3 Nd6 15.Qb3 Nc3 16.Bc3 Rc8=) 14...g6=+ 15.Qh3 (15.Qe2 b4=+) 15...Nd6 16.Nd2 (16.Nc3 Nb4 17.Be2 Nc4 18.Bc4 bc4=+) 16...b4 17.a6 (17.Ne4 Ne4 18.Be4 Bb5–/+) 17...b6 18.Rac1 (18.Rfc1 Bb5–/+) 18...Rc8 (18...Bb5 19.Ndc4 Nc4 20.Bc4 Bc4 21.Rc4–/+) 19.Rc8=+ Bc8 (19...Qc8 20.Rc1 Qe8 21.e4=+) 20.Nc6 (20.Rc1 Bd7=+) 20...Qd7 21.Rc1 b5 22.Ne5 (22.Qf3 Ba6 23.e4 Nb6 24.Nb4 Bb7–/+) 22...Qd8 (22...Qe8 23.Ne4=+) 23.Nc6 Qd7 24.Nf3 (better 24.Ne5!? Qe8 25.Ne4=+) 24...Ba6–/+ 25.Nfe5 Qb7 (25...Qe8 26.Ra1 (26.Na7? Nc4 27.Rb1 Nc3 28.Bc3 bc3–+) 26...Bb7 27.Ne7 Qe7 28.Ra7–/+) 26.Na5=+ Qb6 (better 26...Qa8 27.Nac6 Qe8–/+) 27.Nb3? (better 27.Nac6 Nc4 28.e4=) 27...Rc8–+ 28.Nc5 Nc4 (28...Nc4 29.Nf7 A) 29...Kf7?? 30.Qh7 Ke8 31.Qg8 (31.Qg6?! Kd8 32.Ne6 Kd7+–) 31...Bf8 A1) 32.Ne6 Ne7 (32...Nb2 33.Qf8 Kd7 34.Qf7 Ne7 35.Nc5 Rc5 36.Rc5 Qc5 37.dc5 Nd3 38.c6 Kc6 39.Qe6 Kc5 40.Qe7 Kc4 41.Qf6+–) 33.Bg6 Kd7 34.Nf8 Rf8 35.Qf8 Qg6=+; A2) 32.Bg6 Kd8 33.Qf8 Kc7 34.Qf7 Kb8 35.Nd7 Ka8 36.Nb6 Ndb6 37.Be4 Kb8 38.Qf4 Rc7 39.d5 ed5 40.Be5 Ne5 41.Qe5+–; B) 29...Nb2 30.Bg6 Nf6= (30...Bc5?? 31.Qh7 Kf8 32.Ng5+–)) 0–1. Massudy (2390) – FIREYCHESS (2255), lichess.org, 2020.

7.Nf3 c6

8.a4 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qb6 13.Bc4 Nbd7 14.d4 Qa5 15.Nc3 Nb6 (15...b6 16.d5 ed5 A) 17.Bd5? Bb4–+ (worse 17...Nd5 18.Nd5 Qc5 19.Qd4+–); B) 17.Nd5 Nd5 18.Bd5=) 16.Bd3+= Nbd5 17.Nd5 Nd5 (17...ed5 18.Qc2+=) 18.Ne5 Bb4 19.Qh5 g6 20.Qh6 Be7 21.e4 Nc3? (better 21...Nb4!?+=) 22.Nc4+– Qb4 23.Rc1 Na2 24.d5 (24.Rb1!? Qa4+–) 24...b5?? (better 24...f6 25.Rb1 Qc5+–) 25.Qg7 1–0. GuestDDNK – GuestPFGB, freechess.org, 2019.

8.a4 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 c5 12.Qe1 (12.Qc2 Nbd7=) 12...b6= 13.d4 Nbd7 14.Qe2 Bb7 15.Nbd2 Qc7 16.Rc1 Ra8 17.Bb2 h6 18.Bb3 Ne4 19.Qd3 Nd2 (19...Ndf6 20.h3=) 20.Nd2 Rc8 21.f3 Qb8 (21...Bd6 22.g3=) 22.Bc2+= f5?? (better 22...Nf6+=) 23.Bb3+– Kf7?? (23...c4 24.Rc4 Rc4 25.Bc4 Nf8 26.Qf5 Qd6+–) 24.Qf5 Bf6 (24...Ke8 25.Be6 Nf8 26.Qf7 Kd8+–) 25.Qe6 Kf8 (25...Kg6 26.Bc2 Be4 27.Be4 Kg5 28.Qg4) 1–0. DEFFM – GuestXflg, freechess.org, 2019.

8.a4 a6 9.Nc3 ab5 10.ab5 Ra1 11.Ba1 c5 12.0–0 b6 (12...Nbd7 13.Qc2 (13.d3 Nb6 14.Na4 Nc4 15.dc4 Nd7 16.Qb3 Qc7=; 13.d4 Qc7 14.dc5 Nc5 15.Na4 Rd8 16.Bd4 b6=; 13.Qb3 Nb6 14.Rd1 Nc4 15.Qc4 Qa5 16.Na4 Bd7=) 13...Nb6 14.Bd3 c4 15.Be2 Bd7 16.d3 cd3+=; 12...Qc7 13.Qc2 (13.d3 b6 14.Qc2 Bb7 15.Ne4 Nbd7 16.Rc1 Ne4=; 13.Na4 Nbd7 14.Qb3 Bd6 15.b6 Qb8 16.Re1 Re8+=; 13.Ne2 Nbd7 14.Qb3 Bd6 15.Bf6 Nf6 16.b6 Qd8=) 13...Bd6 14.Ne4 Ne4 15.Qe4 Qe7 16.d4 Nd7+=) 13.Bb2 (13.Qe2 Bb7 14.e4 Qc7 15.Bb2 Qf4 16.d3 Nbd7+=; 13.d4 cd4 14.Qd4 Qc7 15.Ne2 Bb7 16.Rc1 Ba3=; 13.Qc2 Bb7 14.e4 Qc7 15.d3 Nbd7 16.Bb2 Ra8=; 13.e4 Bb7 14.Re1 Qc7 15.Bb2 Qf4 16.d3 Rd8=) 13...Bb7 14.Qc2 (14.d3 Nd5 15.e4 Nc3 16.Bc3 Bf6=) 14...Nd5 (14...Bf3 15.gf3 Nd5 16.Rd1= (16.Nd5 ed5+=) 16...Bf6=) 15.Nd5+= Bd5 (15...ed5 16.Bd3 g6+=) 16.Ne5 (16.e4 Bc4 17.Qc4 Bf6+=) 16...f6 (16...Bd6=) 17.Nd3 Qe8 (17...Bd6!?=) 18.Nf4+= Bc4 (18...Qd7!?+=) 19.Qc4+/– Qg6?? (better is 19...Qf7 20.Ne6 Re8+/–) 20.Ng6+– (20.Ng6 Rf7 21.Ra1 hg6 22.Qe6+–) 1–0. Janek – Vesely, internet, 2016.

8.a4 Nd5 9.Nc3 Bf6 10.0–0 Nc3 11.dc3 Qc7 12.Qb3 Rd8 13.Rfd1 Nd7 14.Ba3 Nb6 15.Rd8 Qd8 16.Rd1 Qe8 17.Be2 cb5 18.Bb5 Qf8?? (better 18...Bd7+=) 19.Bf8+– 1–0. GuestJVTB – GuestVMHY, freechess.org, 2017.

8.a4 Bd7 9.Ne5 cb5 (9...Be8 10.f4=) 10.ab5= (worse 10.Bb5 Bb5 11.ab5 Nbd7=+) 10...Qe8? (better 10...Be8!?=) 11.Qb3 Bd6 12.f4 Be5? (better 12...Qe7+–) 13.fe5+– (13.Be5?! Qe7+–) 13...Ne4 14.0–0 b6 (14...a6 15.Qd3 Nc5 16.Qe2 ab5 17.Ra8 bc4 18.Nc3+–) 15.d4 (better 15.Qc2 Bb5 16.Qe4+–) 15...f5 (15...Qc8+–) 16.Ba3 Rf7 (16...a5 17.d5 a4 18.de6+–) 17.d5 Nc5 (17...Ng5 18.h4 Na6 19.hg5 ed5 20.Bd5 Nc7 21.Ba8 Qa8+–) 18.Bc5 bc5 (18...ed5 19.Bd5 bc5 20.e6 Be6 21.Be6+–) 19.de6 Be6 20.Be6 Nd7 21.Bf7 Qf7 22.e6 (22.e6 Qe7 23.ed7 Kh8 24.Qd3+–) 1–0. GuestCYBB – GuestDPSD, freechess.org, 2019.

8.a4 Nbd7 9.0–0 Nb6 10.Be2 cb5 11.ab5 Nbd5 12.Nc3 b6 (12...Nc3 13.Bc3 Nd5 14.Bd4+–) 13.Ne5 Nc3 14.Bc3 Bb7 15.Nc6 (15.Bd4 Qd6+=) 15...Bc6 (15...Qd7 16.Qa4 Rfc8 17.Ne7 Qe7 18.Qh4+–) 16.bc6 Nd5 17.Bd4 Bf6 18.Bf6 Qf6 19.Ba6 Qe7 (better 19...Rad8!?+–) 20.Bb7+– Rfb8 (20...a5 21.Ba8 Ra8 22.Qa4+–) 21.Ba8 Ra8 22.Qa4 Qc7 23.Rfc1 (23.d4 a5+–) 23...Ne7 (23...a5 24.d4+–) 24.Ra2 (24.Ra3 a5+–) 24...h6 (24...a5 25.g3+–) 25.d4 (25.Qa6!? Rc8+–) 25...g6 (25...a5 26.Qb5+–) 26.Qb5 Kg7 27.g3 h5 (27...Rc8 28.e4+–) 28.e4 Rd8 (28...h4 29.gh4 Rc8 30.d5+–) 29.Ra6 (better 29.Qe5 Qe5 30.de5+–) 29...Rd4 (29...Rc8 30.Qb2 Kg8 31.Qa3+–) 30.Ra7!! Qd6 (30...Qa7 31.Qe5 Double attack) 31.e5 (31.Re7!? Re4 32.c7 Qe7+–) 31...Rd1 (31...Qd8 32.Re7! Qe7 33.c7 Rd1 34.Rd1 Qc7 35.Rd6+–) 32.Kg2 Qd5 (32...Qd4 33.Rd1 Qe4 34.Kg1 Qc6+–) 33.Qd5 Rd5 (33...ed5?? 34.Rd1 (34.Re7?! Rc1 35.c7 g5+–) 34...Nc6 35.e6+–) 34.Re7 Re5 35.c7 (35.c7 h4 36.c8Q Re2 37.Qc3 e5 38.Rf7 Kf7 39.Qf3 Ke8 40.Rc8 Ke7 41.Rc7 Kd8 42.Ra7 Rf2 43.Kf2 hg3 44.Kg3 b5 45.Qf8) 1–0. DEFFM – GuestJNNM, freechess.org, 2018.

8.a4 Nbd7 9.0–0 Nb6 10.Be2 Bd7 11.Ne5 cb5 12.ab5 Qc7 13.d4 Rfc8 14.Bd3 Be8 15.Nd2 Nfd7 16.Qf3 (16.Nef3 Nd5+–) 16...Ne5+= 17.de5 Qd7 18.Bd4 Bc5 (18...f6 19.Qg3 fe5 20.Be5+– (20.Qe5?! Bf6 21.Qg3 e5=)) 19.Nb3+– Bd4 20.Nd4 g6 21.Rfd1 (21.Rfc1 Rc1 22.Rc1 Rc8+–) 21...Qe7 22.Be4 Rc7 23.Qe2 Nc4 (23...Rc5 24.f4+–) 24.f4 f5? (better 24...Nb6+–) 25.ef6!+– Qf6 26.Rac1 (better 26.Ne6 Re7 27.Qc4+–) 26...Rac8?? (better 26...Rd8 27.b6 ab6 28.Rc4 Bb5+–) 27.Ne6! Re7 (27...Qe6 28.Bd5 Pinning (28.Bd5 Decoy)) 28.Rc4 Rc4 29.Qc4 Kh8 (29...Re6 30.Bd5 Bf7 31.Be6 Be6+–) 30.Nc7 Bf7 (30...Kg7 31.Ne8 Re8 32.Rd7 Re7 33.Qc7 Rd7 34.Qd7 Kf8 35.Qc8 Kg7 36.Qb7 Qf7 37.Qf7 Kf7 38.Bg6 hg6 39.Kf2+–) 31.Qc5 Re4 (31...Bg8 32.Bb7 Qg7+–) 32.Qf8 Bg8 33.Qf6 1–0. DEFFM – GuestDTTL, freechess.org, 2018.

8.Nc3 cb5 9.Nb5 a6 10.Nbd4 Bd7 (10...Qd6 11.Qc2=) 11.Ne5 Qc7 12.f4 Nc6 13.Ndc6 Bc6 14.0–0 b5 (14...Rac8!?+=) 15.Be6+– (15.Nc6?! Qc6 16.Bb3 Rac8=) 15...fe6 (15...Be4 16.Rc1 Qb7 17.Bh3+–) 16.Rc1+– Qa5? (better 16...Bd6 17.Rc6 Qe7+–) 17.Nc6 (17.Rc6?! Qa2 18.Qc2 b4+–) 17...Qa2 (17...Qc7 18.Qb3 Nd5+–) 18.Ne7 Kh8 19.Rc2 (19.Rc2 Qb3 20.Qb1+–) 1–0. Janek – Ybbo17, internet, 2018.

8.a4 cb5

9.ab5 a6 10.0–0 Nbd7 11.d4 Nb6 12.Bd3 Nfd5 (12...ab5 13.Ra8 Na8 14.Bb5+=) 13.ba6 (13.Ba3 ab5 14.Be7 Qe7 15.Ra8 Na8+=) 13...ba6 14.Ne5 (14.Ba3 Bb7+=) 14...Bb7 (14...Nb4 15.Be4 N6d5 16.Nc3=) 15.Qh5+= Nf6 16.Qe2 a5 17.Nc3 Nfd5 18.Qf3 Qb8 (18...a4 19.Ba3+=) 19.Qh3 g6 20.Nd5 Nd5? (better 20...Bd5!? 21.e4 Bb7+–) 21.Nd7+– (21.Nd7 Qd8 22.Nf8 Bf8 23.Rfc1+–) 1–0. Anonymous – Anonymous, lichess.org, 2020.

9.ab5 a6 10.Nc3 a5 (10...Bd6 11.d4=) 11.0–0+= b6 (11...Bd6 12.d4+=) 12.d4 (12.Qe2 Bb7+=) 12...Bb7 13.Be2 (13.Bd3 Nd5+=) 13…Nbd7 ½–½. Jacobi,Karl Heinz (2190) – Stingl,Kristian, Salzwedel op, 2000.

9.ab5 Bb4 10.0–0 Nbd7 11.d4 (11.Qb3 Bd6+–) 11...Nb6 (11...a5 12.ba6 ba6 13.Qd3+–) 12.Bd3 a6 13.Nc3 a5 14.Ne5 (14.Qb3 Bd7+–) 14...Nbd7 (14...Nfd5 15.Qc2 g6 16.Be4+=) 15.Na2 Ne5 (15...Bd6!? 16.Nc4 Bc7+–) 16.de5+– Nd5 17.Qc2 (17.e4!? Nb6 18.Nb4 ab4 19.Ra8 Na8+–) 17...Bd7+– 18.Bh7 (worse 18.Nb4 Nb4 19.Qc4 Nd3 20.Qd3 Qe8=) 18...Kh8 19.Bd3 (worse 19.Nb4 Nb4 20.Qb1 g6 21.Bg6 fg6 22.Qg6 Qh4=+ (worse 22...Bb5 23.Qe6 Qh4 24.Qg6+–)) 19...Rc8 (19...Qe7 20.Qc4+–) 20.Qe2+– g6 (20...Kg8 21.Nb4 ab4 22.Qg4+–) 21.Nb4 Nb4 (21...ab4 22.Rfc1+–) 22.Rfd1 Nd3?? (22...b6+–) 23.Qd3 (23.Rd3?! Bb5 24.Rd8 Be2+=) 23...Qb6 (23...Rc5 24.Qd7 Qd7 25.Rd7 Rb5 26.Ba3+–) 24.Qd7 Rfd8 (24...Kg7 25.Bd4 Qc7 26.Qc7 Rc7 27.Ra5 Rd8+–) 25.Qf7 (25.Qf7 Qc7 26.Qf6 Kh7 27.Qe6+–) 1–0. DEFFM – GuestYZQD, freechess.org, 2020.

9.ab5 b6 10.0–0 Bb7 11.Nc3 Nbd7 (11...a5 12.Qe2=) 12.d4+= Qc7 13.Be2 Rfc8 14.Rc1 Qd8 15.Na4 h6 16.Qd2 Ne4 17.Qd1 Rc1 18.Qc1 Rc8 19.Qb1 Ndf6 20.Rc1 (20.Qa1!?=) 20...Rc1+= 21.Qc1 Qc8 (better is 21...Ng4!?+=) 22.Qc8+= Bc8 23.Ne5 Bd7 24.Nc3 Nc3 25.Bc3 Bd6 26.Nd7 Nd7 27.Bf3 ½–½. mr5reasons1 (1690) – drpat23 (1810), gameknot.com, 2013.

9.ab5 b6 10.0–0 Bb7 11.d4 Nbd7 12.Nbd2 Rc8 13.Ra7 Bd5 14.Qb3 Bc4 (14...Ra8 15.Ra6+–) 15.Nc4 Ne4 (15...Rc7 16.Rfa1+–) 16.Nce5 (16.Rd7!? Qd7 17.Nb6+–) 16...Ne5+– 17.de5 Bc5 (better 17...Ra8 18.Qa2 Ra7 19.Qa7 Bc5+–) 18.Rd1+– Qe8 19.Nd4 (better 19.Ra4 f5 20.ef6 Nf6 21.Ng5+–) 19...Be7? (better 19...Ng5+–) 20.Nc6 Bd8 (20...Nc5 21.Qc4 (21.Ne7?! Qe7 22.Re7 Nb3+–; 21.Re7?! Nb3 22.Rdd7 Ra8=) 21...Bd8 22.Ba3+–) 21.Ba3 (better 21.Rd8 Rd8 22.Re7+–) 21...Rc7 (21...Nc5 A) 22.Rd8?! A1) 22...Nb3? 23.Rc8 (23.Re8?! Rfe8 24.Ne7 Re7 25.Re7 h6+–) 23...Qc8 24.Ne7 Kh8 25.Nc8 Rc8 26.h3+–; A2) 22...Rd8 23.Bc5 bc5+–; B) 22.Bc5 bc5 23.Rad7+–) 22.Rc7 (better 22.Ra8 Bg5 23.Re8 Re8+–) 22...Bc7 23.Bf8 Qf8 24.Rd7 Nc5 25.Qd1 Nd7 26.Qd7 Bb8 (26...Be5 27.Ne5 h5 28.h3+–) 27.Qb7 (27.Nb8?! Qb8 28.f4 h5+–) 1–0. GuestGPGQ – GuestQMSP, freechess.org, 2018.

9.ab5 b6 10.0–0 Bb7 11.Qe2 Ne4+=.

9.ab5 b6 10.0–0 Bd6 11.d4 Qc7 (11...Bb7 12.Qe2+–) 12.Nbd2 Bd7 (better 12...Bb7!?+–) 13.Qb3+– e5?? (13...Qb7+–) 14.de5 Be5 15.Be5 Qc5 (15...Qd8 16.Bd6 Bg4 17.Bf8 Kf8 18.Bf7+–) 16.Bf6 gf6 17.Bd5 (17.Bd5 Qb5 18.Ba8 Qb3 19.Nb3+–) 1–0. GuestFGRB – GuestKTLC, freechess.org, 2019.

9.ab5 Qb6 10.Nc3 a6 11.0–0 Bd7 12.d3 Nd5?? (12...Rc8 13.Qe2+=) 13.Ne5?? (13.Bd5 Bb5 14.Nb5 ed5 15.Ba3 Ba3 16.Na3+– (worse 16.Ra3 Qb5 17.Nd4 Qd7=+)) 13...Nc3 14.Nd7 (14.Bc3 Bb5 15.Qb3 Bf6 16.Bb5 Be5 17.Be5 Nd7 18.Bg7 Kg7 19.Qc3 Nf6+=) 14...Nd7= (worse 14...Nd1 15.Nb6 Nb2 16.Na8+–) 15.Bc3 ab5 16.Bb3 (16.Rb1 b4= (16...bc4? 17.Rb6 Nb6 18.Qg4+–)) 16...Ra1 17.Qa1 Bf6 18.d4 e5 (18...Qd6 19.Bc2 Rc8 20.Rc1=) 19.Bb4 (better 19.de5!? Be7 20.e6 fe6 21.Bg7+–) 19...ed4 20.Bf8 de3 21.Qa2 ef2 22.Rf2 Bd4?? (better 22...Kf8 23.Qa8 Ke7=) 23.Bf7?? (better 23.Be7 Bf2 24.Kf1+–) 23...Kf8–+ 24.Bh5 Bf2 25.Qf2 Qf2 26.Kf2 b4 27.Bf3 b6 28.Ke3 Nc5 29.Kd2 Ke7 30.Bd1 Kd6 31.Bc2 h6 32.Bg6 Ke5 33.Kc2 Kf4 34.Kd2 b3 35.Bh7 Na4 (35...g5 36.Kc3–+) 36.Kd3 (36.Bg8 b2 37.Kc2 Ke3–+) 36...b5 37.Bg8 b2 38.Kc2 Ke3 39.Bb3 Kf2 40.Bd5 (40.g4–+) 40…b4 (40...b4 41.Bc6 g5–+) 0–1. GuestCMWC – GuestNJLT, freechess.org, 2017.

9.ab5 Qc7 10.Be2 Bd7 (10...Nbd7 11.Nc3+=) 11.0–0+– Rd8 (11...Rc8 12.Nc3+–) 12.Nc3 1–0. Dalia – Zardusi, internet, 2019.

9.ab5 Nbd7 10.0–0 Nb6 11.Be2 Nfd5 12.d4 Bd7 13.Qb3 Bf6 14.Nbd2 Qe8 15.Ne4 Be7 16.Nc5 Bc8 (16...a5 17.ba6 (17.Nb7?! a4 18.Qd3 Nb4+=) 17...ba6 18.Ra5+– (18.Ba6?! Bc5 19.dc5 Na4=)) 17.Bd3 (17.Rfc1 Nd7+–) 17...Nc7 (17...Nd7 18.Rfc1+–) 18.Rac1 (18.e4 Bd6+–) 18...Nbd5 19.e4 (19.Rc2!?+–) 19...Nf4+– 20.Nb7 Nd3 21.Rc7 Nb2 22.Ne5 (22.Qb2 Rb8 23.Nc5 Rb5+–) 22...Bb7 23.Rb7 Rb8 (better 23...Bg5!? 24.Nc6 Nc4 25.Qc4 Qc8+–) 24.Rb8+– Qb8 25.Nc6 Qb7 26.Qb2 Bd8 27.Qb4 Bb6 (27...Re8 28.g3+–) 28.Ne7 Kh8 29.Ng6! hg6 (29...fg6 30.Qf8 Mate attack; 29...hg6 30.Qf8 Discovered attack) 30.Qf8 Kh7 31.Rd1 Qe4 32.Qf7 Bd4 (32...Qe2 33.Qf3 Qb5 34.Rd3+–) 33.Qf3 Qf3 (33...Qe5 34.Qh3 Kg8 35.Qd3+–) 34.gf3 e5 (34...Bc5+–) 35.f4! Kh6 (35...ef4 36.Rd4 Deflection) 36.fe5 Be5 37.Rd7 1–0. DEFFM (2365) – martillaco (1920), lichess.org, 2020.

9.ab5 Nbd7 10.0–0 Nb6 11.Be2 Bd7 12.d4 Qc7 13.Nbd2 Rfc8 14.Bd3 Nbd5 15.Ne5 Bd6 (15...Nb4 16.Bc4+=) 16.Rc1 (16.Qf3 Nb4 17.Rfc1 Qd8+=) 16...Qd8 17.Ndc4 Bb5? (better 17...Bc7 18.Qb3 a6 19.Nd7 Qd7=) 18.Nd6+– Rc1 19.Bc1 (19.Qc1?! Bd3 20.Ndf7 Qc7 21.Nh6 gh6 22.Nd3 Qc1 23.Rc1 a5+=) 19...Bd3? (19...Qd6 20.Bb5 a6+–) 20.Ndf7 (20.Nef7?! Qe7 21.Qd3 Rf8+–) 20...Qc7 21.Qd3 (21.Nd3?! Qf7 22.f3 b5+=) 21...Rc8 22.Bb2 Qc2 23.Nd6 Qd3 24.Nd3 Rb8 (24...Rc7 25.Nc5+–) 25.Nc5 b6 (25...a5 26.Ra1 b6 27.Ne6+–) 26.Ne6 a5 (26...Ne8 27.Nb5+–) 27.e4 (better 27.Rc1 Ne8 28.Ne8 Re8+–) 27...Nb4 (27...Ne4 28.Ne4 Re8 29.Rc1 Re6 30.Rc8 Kf7 31.Ng5 Ke7 32.Ne6 Ke6 33.Re8 Kd6 34.Ba3 Kc6 35.Rh8+–) 28.d5 Ne8 29.Nf5 Kf7 30.Neg7 Nf6 (30...Ng7 31.Bg7 Kg6 32.Rd1+–) 31.Be5 Rg8 (31...Ra8 32.Bf6 Kf6 33.f4+–) 32.Nh6 (32.Nh6 Kg7 33.Ng8+–) 1–0. GuestNZWM – GuestWRQW, freechess.org, 2017.

9.ab5 Nbd7 10.0–0 Nb6 11.Be2 Bd7 12.Bd4 Ne8 (12...Bd6 13.Nc3+=) 13.Ne5 Nf6 14.Qb3 Nfd5 (14...Qc7 15.Nc3+=) 15.Nc3 Bf6 (15...f6 16.Nd7 Qd7 17.Bf3+–) 16.Ne4 Be5 (16...Be7 17.Rfc1+=) 17.Be5+– f6 18.Bd4 Kh8 (18...Be8 19.Rfc1+–) 19.Bc5 Rg8 20.Nd6 Be8 21.d4 Qd7 (21...Qc7 22.Bg4 f5 23.Bf3+–) 22.Ra3 (22.e4 Nf4 23.Bg4 Nc8 24.Nc8 Rc8 25.Ra7 h5+–) 22...Bg6 23.Rfa1 Nc8 24.Nc8 Qc8 25.Bf3 (25.Bc4 Rd8+–) 25...Bf7 (25...a6 26.ba6 Ra6 27.Ra6 ba6 28.Be2+–) 26.Bd5 (26.e4!? Nf4+–) 26...ed5 27.h3 (27.Ra7 Ra7 28.Ra7 b6+–) 27...a6+– 28.ba6 (28.Qa2 Re8+–) 28...Ra6 29.Ra6 ba6 30.Qb6 Qb8 (30...Qf5 31.Qa6 Bg6 32.Qc6+–) 31.Qa6 Qb2 32.Bd6 (32.Qa2 Qa2 33.Ra2 Bg6+–) 32...h6 (32...Bg6 33.Ra5+–) 33.Bf4 Kh7 (33...Bg6 34.Ra5+–) 34.Ra2 Qc1 35.Kh2 Rc8? (35...Qc4 36.Qa7+–) 36.Qe2 (better 36.Qb7!? Bg6 37.Ra7+–) 36...Qb1 37.Rb2 Qf5 38.g4 (38.Qa6!?+–) 38...Qe4 39.h4 Rc1 (39...f5 40.g5+–) 40.f3 Qe8 (40...Qe6 41.Qd3 Bg6 42.Qd2+–) 41.h5 (41.Qd3 Bg6 42.Qb5 Qe6+–) 41...Bh5 42.e4 (42.gh5? Qh5 43.Kg3 Rg1 44.Kf2 Qg6–+) 42...Ra1 43.ed5 (43.gh5 Qh5 44.Kg3 Rg1 45.Kf2 Qh1 46.ed5 Rg2 47.Ke3 Re2 48.Re2 Qg1 49.Kd3 Qd1 50.Bd2 Qb3 51.Bc3 Qd5–+) 43...Bf7 (43...Bg6 44.Qe8 Be8 45.Rb7+–) 44.Qe8 Be8 45.Re2 (45.d6 Bc6+–) 45...Ra8 (45...Bb5 46.Re3+–) 46.Bc7 (better 46.Re7+–) 46...Kg8?? (46...Bb5 47.Re7 Ra4 48.Bb6+–) 47.d6 (better 47.Re8 Re8 48.d6+–) 47...Kf8 48.Bb6 Bc6 (48...Bb5 49.Re7+–) 49.Kg3 (49.d5 Be8+–) 49...Re8 (49...Rb8 50.Bc5+–) 50.Rc2 (50.Bc5 Rd8+–) 50...Ba4 (50...Bd7 51.Rc7 Rb8 52.Rd7 Rb6 53.Kf4+–) 51.Rc7+– Rd8?? (better 51...Rb8 52.Bc5 Rd8+–) 52.Ra7 Rb8 (52...Rd7 53.Ra4 Kf7 54.Bc5+–) 53.Ra4 Rb6 (53...Ke8 54.Bc7 Rb5 55.Ra8 Kd7 56.Rf8+–) 54.Ra8 (54.Ra8 Kf7 55.d7+–) 1–0. Chirpii,Alexandru (1925) – Zanetti,Joao Carlos Pereira (1760), Iasi ROM, World Amateur Ch, 2013.

9.ab5 Nbd7 10.0–0 Nb6 11.Be2 Bd7 12.Ne5 Be8 13.d4 Nbd5 14.Qb3 (14.Nd2 Bb4+–) 14...Qb6 Exerts pressure on the isolated pawn (14...Ne4 15.Bd3 f5 16.Rc1+–) 15.Nc3+– Nc3 16.Bc3 (worse 16.Qc3 Bb5 17.Bb5 Qb5=+) 16...Nd5 17.Ba5 Qd6 18.Nc4 (18.Bd2 f5+–) 18...Qd7 19.Rfb1 b6 (better 19...f6!?+=) 20.Bb6!+– Nb6?? (20...ab6 21.Ra8 Pinning (21.Ra8 Deflection; 21.Ra8 Clearance); 20...Nb6 21.Nb6 Combination) 21.Nb6 ab6 22.Ra8 Qb7 (22...f5 23.Rc1 Qd6 24.Ra7+–) 23.Rba1 Bc6 (23...Qd7+–) 24.R8a7 (24.R8a7 Bg2 25.Rb7 Bb7 26.Ra7+–) 1–0. GuestNBLH – GuestKBKD, freechess.org, 2019.

8.a4 Ne4

9.0–0 Bf6 10.d4 a6 A) 11.Qc2 Nd6 (11...ab5 12.Bd3 Nd6 13.Bh7 Kh8 14.Bd3 Na6 15.ab5 Nb4+/–) 12.Bd3 h6 13.Nc3 b6 14.Ne4 Ne4 15.Be4 ab5+/–; B) 11.Bd3 Nd6 (11...Ng5 12.Nfd2 h6 13.f4 Nh7 14.Qc2 g6 15.Nc3 Be7+/–) 12.Qc2 h6 13.Nc3 b6 14.Ne4 Ne4 15.Be4 ab5+/–.

9.0–0 Bf6 10.d4 cb5 A) 11.Bd3 Nd6 (11...Ng5 12.Ng5 Bg5 13.ab5 Be7 14.Qc2 h6 15.Rc1 Nd7+/–) 12.ab5 Bd7 13.Nc3 Qb6 14.Qc2 h6 15.Qe2 Rc8+/–; B) 11.ab5 Be7 (11...Nd7 12.Qc2 Ng5 13.Nbd2 Nf3 14.Nf3 Be7 15.Ba3 Ba3+/–) 12.Qc2 Nf6 13.Rc1 a6 14.Bd3 b6 15.Ne5 Bb7+/–.

9.0–0 Bf6 10.d4 c5 11.Nbd2 (11.Qc2 Nd6 (11...Ng5 12.Ng5 Bg5 13.Bd3 cd4 14.Bh7 Kh8 15.Bd4 Bf6+/–) 12.Bd3 cd4 13.Bh7 Kh8 14.Bd3 de3 15.fe3 Nf5+/–; 11.Bd3 Nd6 (11...Qd5 12.Qc2 Ng5 13.Ng5 Qg5 14.Bh7 Kh8 15.Be4 cd4+–) 12.dc5 Bb2 13.Ra2 Nb5 14.Rb2 Nc7 15.Be4 Nd5+/–) 11...Nd2 (11...Nd6 12.Bd3 cd4 13.Nd4 e5 14.N4f3 Re8 15.Ne4 Ne4+/–) 12.Qd2 (12.Nd2 cd4 13.Ne4 Nd7 14.Nf6 Qf6 15.f4 Qh6+=) 12...cd4 13.Nd4 (13.Bd4 Bd4 14.Qd4 Qd4 15.ed4 Rd8+=) 13...Nd7 (13...e5 14.Nf3 Nd7 15.Qc2 e4+=) 14.Be6 (14.a5 Ne5 15.Be2 Ng6+=) 14...Qb6? (14...fe6 15.Ne6 Double attack 15...Qe7+=) 15.Ba2 Ne5 16.h3 Rd8 17.Qe2 Ng6 18.Rfc1 Qd6 19.Qc4 Qe7 20.Ba3?? (20.Qc5 Qe4 21.Bb1 Qe8+–) 20...Qe8?? (better is 20...Qa3!? 21.Qf7 Kh8–/+) 21.Bb2 Ne5 (21...Qe7 22.Qc5 Qe8+–) 22.Qc2+/– g6 23.Rd1 Bd7 (23...Qe7 24.a5+–) 24.Qb3 (better is 24.f4!? Ng4 25.hg4 Qe3 26.Qf2 Qf2 27.Kf2 Bg4 28.Rd2+–) 24...Rac8+/– 25.Rac1 a6 26.Kh1 ab5 27.ab5 Rc1 28.Rc1 (28.Bc1?! Bb5 29.Nb5 Rd1 30.Qd1 Qb5=) 28...Bc8 29.f4 Nd7 30.f5 (30.Rc7 Bg7+–) 30...Nb6 31.fg6 hg6 32.Rf1 Bg7?? (better is 32...Nd5+/–) 33.Rf7+– Nd5 (33...Rd5 34.Rf3 Kh7 35.Qc2+–) 34.Rg7! Kg7 35.Ne6 Kh6 36.Nd8 Qd8 37.Qd5 Qf8 38.Qf7 Qb4 (38...Qf7 39.Bf7 Bd7+–) 39.Bg7 (39.Qg7 Kg5 40.Qf6 Kh6 41.Bb1 Qe1 42.Kh2 Qg1 43.Kg1 Kh5 44.Qg6 Kh4 45.Bf6) 39...Kh5 40.Qf3 Kh4 41.Qf4 (41.Qf4 Qf4 42.ef4+–; 41.Bf6 g5 42.Kh2 Qg4 43.hg4 Bg4 44.Qf4 Kh5 45.Qg5) 1–0. mr5reasons1 (1700) – reodoi (1705), gameknot.com, 2013.

9.0–0 Bf6 10.d4 Nd6 A) 11.Be2 a6 (11...Bd7 12.Nc3 cb5 13.ab5 Be7 14.Bd3 Qb6 15.Ba3 a5+/–) 12.Nc3 ab5 13.ab5 Ra1 14.Qa1 cb5 15.Nb5 Nb5+=; B) 11.Bd3 a6 (11...cb5 12.ab5 Bd7 13.Nc3 Qb6 14.Qc2 h6 15.Qe2 Rc8+/–) 12.Nc3 ab5 13.ab5 Ra1 14.Qa1 Bd7 15.Qb1 h6+=.

9.0–0 Bf6 10.d4 Bd7 A) 11.Ba3 Be7 (11...Re8 12.Bd3 Ng5 13.Ne5 Be5 14.de5 f5 15.Qd2 Nf7+/–) 12.Be7 Qe7 13.Bd3 Nd6 14.Qe2 cb5 15.ab5 a6+=; B) 11.Bd3 Nd6 (11...Ng5 12.Ne5 Be5 13.de5 cb5 14.f4 ba4 15.Ba3 Re8+–) 12.Nc3 cb5 13.Nb5 Nf5 14.Rc1 Bc6 15.Ba3 Be7+=.

9.0–0 Bf6 10.d4 Be7 A) 11.Qc2 Nf6 (11...cb5 12.ab5 Nf6 13.Rc1 a6 14.Ba3 Ba3 15.Ra3 b6+/–) 12.Rc1 a6 13.Ba3 Ba3 14.Ra3 ab5 15.ab5 Ra3+/–; B) 11.Bd3 Nf6 (11...Qd5 12.Qc2 f5 13.Ba3 Ba3 14.Na3 Bd7 15.Ne5 cb5+/–) 12.Ba3 cb5 13.ab5 Nbd7 14.Qc2 Re8 15.Rd1 Ba3+/–.

6.Bc4 a6

7.a4 Bd7 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 0–0 11.0–0 Qe8 (11...Ne4 12.Nc3 Nd6 13.Bd3=) 12.Nc3+= Bb4 13.Qb1 Bc3 (13...Bd6!?+=) 14.Bc3+– (worse 14.dc3 e5=) 14...Nd5 15.Bd4 Nb6 (15...Qe7 16.Qa1+–) 16.Ba2 (better 16.Bb6!? cb6 17.d4+–) 16...Bb5+= 17.Ng5 g6 18.Ne4 f5 19.Ng5 Bd7 20.Bb6 cb6 21.Qb6 Rf6 (21...Nc6 22.Qb7 Nd8 23.Qc7+–) 22.Qb7+– Qc8 (better 22...h6 23.Qb2 Rf8+–) 23.Rb1 Nc6 (23...Na6 24.d4+–) 24.Qc8 Bc8 25.Rc1 Ne7 (25...Bb7+–) 26.Rc7 h6 (26...Rf7 27.Ne6 (worse 27.Nf7 Kf7 28.Bc4 Kf6+–; 27.Be6?! Be6 28.Ne6 h6+–) 27...Be6 28.Be6+–) 27.Re7 hg5 28.Re8 Rf8 (28...Kg7 29.Rc8 e5+–) 29.Rc8! Rc8 30.Be6 (30.Be6 Kf8 31.Bc8+–) 1–0. GuestCZSH – GuestGQVJ, freechess.org, 2017.

7.Qa4 =+.

7.d4 =+.

7.Nf3 ab5 8.Bb5 c6 9.Be2 Nbd7 10.d3 Bd6 11.Nbd2 0–0 12.0–0 Qc7 13.Nc4 b6 14.a4 Be7 15.a5 b5 16.Nce5 Bb7 (16...Ra5? 17.Nc6 Qc6 18.Ra5+–) 17.Nd7 Nd7 18.Qb3 b4 (< 18...Ra5 19.Qc3 Bf6 20.Qa5 Qa5 21.Ra5 Bb2 22.Rb1+/–) 19.Nd4 c5 20.Ne6 (20.a6 Bd5 (20...Ra6?! 21.Ra6 cd4 22.Raa1+=) 21.Qc2 Qc8–/+) 20...fe6–/+ 21.Qe6 Rf7 22.a6 (22.d4 Nf8 23.Qb6 Qb6 24.ab6 Nd7 25.Ra8 Ba8–/+) 22...Bc8 23.Bh5 g6 24.Bf3 Nb6 25.Be5 Be6 (better is 25...Qd8!? 26.Qc6 Ra7–+ (26...Ra6?! 27.Ra6 Ba6 28.Ra1=+)) 26.Bc7=+ Nd5 27.Be5 Bf8 28.Ra5 (28.d4 c4=+) 28...Rfa7–/+ 29.Rfa1 b3 30.Bd5 Bd5 31.Kf1 (31.f3 Kf7–/+) 31...Be6 32.Ke1 c4 33.R5a4 (better is 33.Ke2–+) 33...cd3 34.Kd2 (34.e4 Bd7 35.Rd4 Bb5–+) 34...Bd7 35.Rc4 (35.Rd4 Bb5 36.Ra5 Ba6 37.Rda4–+) 35...Ra6 36.Rb1 Bb5 37.Rf4 Ra2 38.Kd1 Bh6 39.Bb2 (39.Rb4 Rf2 40.Rb5–+) 39...Rb2! 40.Rb2 Ra1 41.Kd2 Bf4 (42.Rb3 Ra2 43.Kc3 Rc2 44.Kb4 d2–+) 0–1. Pierred (2135) – Lilman (2455), Rated game, 1m + 3s, 2005.

5.c4 c6

6.a4 a6 7.Nc3 ab5 8.ab5 Ra1 9.Qa1 Ng4 10.Nb1 Bf6 11.Nf3 Bd7 12.h3 Bb2 13.Qb2 Nf6 14.Ne5 0–0 15.Nd7 Nbd7 16.Nc3 Ne5 (Better is 16...dc4!? 17.bc6 bc6 18.Bc4 Ne5=+) ½–½. tycho – Rahim, HCL–C2475 playchess.de, 2003.

6.a4 dc4 7.Bc4 c5 8.Nf3 0–0 9.0–0 Nbd7 (9...a6 10.d4=) 10.d4 (10.a5 Bd6+=) 10...Nb6 (10...cd4 11.Qd4 Qc7 12.Rc1+=) 11.Be2 (11.Bd3 Nbd5+=) 11...Qc7 (11...Nbd5 12.dc5 Bc5 13.Nc3+=) 12.Qc2 Nbd5 13.Ba3 Re8 (13...a6 14.Rc1+= (14.Bc5 b6–+)) 14.dc5 (14.Rc1 Nd7+/–) 14...Nd7 (14...Bd7 15.Rc1+/–) 15.Rc1 (15.c6 bc6 16.Qc6 Qb8+/–) 15...Bf6 16.Nd4 (16.Ra2 Ne5+/–) 16...Be5 17.g3 (17.h3 N7f6+/–) 17...g6 (17...N7f6 18.Bf3+/–) 18.Nd2 (18.Bb2 Bf6+–) 18...Bg7 (18...Rd8 19.c6 Bd4 20.ed4+– (20.cd7? Qc2 21.Rc2 Ba1 22.dc8N Rac8–+)) 19.Ne4 (19.c6 bc6 20.Qc6 Qb8+–) 19...N7f6 20.Nd6 Rd8 21.e4 Ne7 (21...Ne8 22.Qd3 Ne7 23.Ra2+–) 22.Bb2 (22.e5 Nfd5 23.Qe4 f5 24.ef6 Nf6 25.Ne6 Qd7+–) 22...e5 (22...Nd7+–) 23.Nf3 Ne8 24.Be5 (24.Nc8 Nc8 25.a5 f6+–) 24...Be5 25.Ne5 Nd6 26.cd6 Qd6 (26...Qc2 27.Rc2 Rd6 28.Rc7+–) 27.Rd1 Qe5 (27...Qb6 28.Rd8 Qd8 29.Rd1+–) 28.Rd8 Kg7 29.Rc1 b6 (29...f6+–) 30.Qc3 Qc3 31.Rc3 Bb7 32.Rd7 Be4 33.Re7 Bf5 (33...Bb1 34.Bf3 Rb8 35.Bd5+–) 34.Rcc7 Be6 (34...Rf8+–) 35.Re6 a6 36.Ree7 (36...Rf8 37.ba6+–) 1–0. Buczinski,Henryk – Seweryn,Zbigniew, Siemianowice Slaskie, 1964.

6.cd5 cd5 7.Be5 Nbd7 8.Bg3 Nc5 (8...e5 9.Nf3 e4 10.Ne5=+) 9.Nf3 0–0 (9...Nce4 10.Nc3=+) 10.Be2 Nfe4 11.0–0 Ng3 12.fg3 Bf6 (12...d4 13.Nd4 Bf6 14.Kh1=+) 13.d4= Ne4 14.Bd3 Re8 (14...a6 15.Qc2=) 15.Qc2 (15.Nbd2!? Nd6 16.Rc1=) 15...Bd7 16.a4 (16.Nbd2 Rc8 17.Qb1=+) 16...a6 (16...Rc8 17.Qe2=+) 17.Be4 (17.ba6!? ba6 18.Be4 de4 19.Qe4=) 17...de4=+ 18.Ne5 (18.Qe4 ab5 19.Qb7 ba4=+) 18...ab5 19.Nd7 (19.a5 Be5 20.de5 Bc6–/+) 19...Qd7 20.Qe4 ba4 21.Na3 b5–+ 22.Qg4 Red8?? 23.Rf6= Kh8 24.Rff1 f5 25.Qf3+– g6 26.Nc2 Qd6 27.h4 e5 28.de5 Qe5+/– 29.Nd4 Re8 30.Rfe1 Kg7 31.Nc6 Qc5+/– 32.Kh2 b4 33.Rac1 Qb6 34.Qd5 Rf8? 35.Qe5+– Rf6? 36.Red1 Raf8 37.Rd7 R8f7 38.Rf7 Kf7 39.Qe7 Kg8 40.Qf6 Qc7 41.Ne7 (41...Qe7 42.Rc8 Qd8 43.Rd8) 1–0. pinecrest1981 – lalinzi, Live Game Caissa's Web, 2006.

6.Nf3 Nbd7 7.Nd4 c5 8.Nf3 b6 9.Be2 Bb7 10.0–0 Qc7 11.a4 (11.cd5 ed5 12.d4 0–0=) 11...h5 (11...dc4 12.Bc4 Ng4 13.Re1=) 12.d4 (12.cd5 ed5 13.d4 c4+=) 12...h4 (12...dc4 13.dc5 Qc5 14.Qc2+=) 13.h3 (13.cd5 h3 14.g3 ed5+=) 13...Ne4 (13...dc4 14.Na3=) 14.Nbd2 (14.dc5 Bc5 15.cd5 Bd5 16.Bg7 Rg8+/–) 14...Bf6 15.Qc2 (15.cd5 ed5 16.Qc2+=) 15...g5? (better is 15...Nd2 16.Nd2 cd4 17.Bd4 e5=) 16.Ne4+– de4 17.Nd2 cd4 18.Ne4 Be7 19.Bd4 e5 20.Bb2 f5 21.Ng5 (21.Nc3!? 0–0 22.Rad1+–) 21...Bg5+/– 22.Qf5 0–0–0 (better is 22...Be7!? 23.Bg4 Rh6+/–) 23.Bg4+– (23.Qg5 Rhg8 24.Qg4 Rg4 25.Bg4 A) 25...Qc4?? 26.Rac1 Qc1 27.Rc1 (27.Bc1?! Kc7+–) 27...Kb8 28.Bd7 Rd7 29.Be5 Ka8 30.Rc4+–; B) 25...Be4+=) 23...Rhg8 24.Rad1 (24.c5 bc5 25.Be5 Rdf8+–) 24...Bf6 25.Rd7 Qd7 26.Qf6 (26.Qd7 Rd7 27.f3 Kd8+=) 26...Rg4 27.hg4 Qg4 28.f3 Qh5 (28...Qg8 29.Qh4 e4 30.fe4+–) 29.Qe6 Kb8 30.Qe5 Qe5 31.Be5 Kc8 32.Bd4 Rg8 (32...Kd7 33.c5 bc5 34.Bc5+–) 33.Kf2 Rg6 34.Rc1 White prepares c5 34...a6 (34...Kd7 35.c5 Bd5 36.c6 Kc8 37.a5 ba5 38.Ba7+–) 35.c5 bc5 36.Rc5 Kb8 37.Rh5 ab5 38.ab5 h3 (38...Kc8 39.Rh4 Rd6 40.g4+–) 39.Rh3 Bd5 40.Rg3 (40.e4 Be6+–) 40...Rh6 (40...Rg3 41.Kg3 Bc4 42.b6+–) 41.Rg7 Bc4 (41...Kc8 42.e4 Bb7 43.b6+–) 42.b6 Rc6 (42...Rh5 43.f4+–) 43.Rc7! Bb5 (43...Rc7 44.Be5 Decoy) 44.Rc6 (44.Ra7 Re6+–) 44...Bc6 45.g4 Kc8 46.f4 Kd7 47.f5 Ke7 48.Kg3 Kf7 (48...Bd5 49.g5 Kd6 50.g6+–) 49.Kf4 (better is 49.g5 Ke8 50.g6 Bb7+–) 49...Kg8 (49...Ke7 50.g5 Kd8+–) 50.Ke5 (50.e4 Bb7 51.g5 Kh7+–) 50...Kf7 51.Kd6 Bf3 52.Kc7 Ke8 53.b7 Bb7 54.Kb7 Kf7 55.Kc7 Ke7 56.e4 Ke8 57.Bc5 (57.e5 Kf7 58.Kd8 Kg7 59.g5 Kf7 60.e6 Kg8 61.g6 Kf8 62.e7 Kg8 63.e8Q) 57...Kf7 58.e5 Ke8 (58...Kg8 59.e6 Kg7 60.Bd4 Kf8 61.Kd7 Kg8 62.e7 Kh7 63.e8Q Kh6 64.Qg6) 59.g5+– Kf7 60.Kd7 White prepares the advance e6 60...Kg8 61.e6 Kg7 62.e7 Kh7 63.e8Q Kg7 64.Bd4 Kh7 65.Qh8 1–0. Kapas,Robert (1950) – Szurkos,Andras (1740), 5th Budapest Hungary, Karacsonyi Open, 2013.

6.a4 0–0

7.d4 Ne4 8.c5 (8.Qc2 a6=+) 8...Nd7 9.Bd3 b6 10.Be4 de4 11.f3 ef3 12.Qf3 bc5 13.bc6 Nb6 14.c7? Qc7–+ 15.dc5 Bb7?? 16.Qg4+= e5 17.Nf3?? Nc4 18.Bc3?? Ne3 19.Qg3 f6 20.Ra2 Bc5 21.Nbd2 Nd5 22.Ba1 Nf4 23.Rc2 Bf2 24.Qf2 Qc2 25.0–0 Bf3 26.Nf3 Qf2 27.Rf2 Rab8 28.Rb2 Rb2 29.Bb2 Nd3 30.Ba3 Rc8 31.h3 Rc4 32.a5 Ra4 33.Bd6 Ra5 34.Nd2 Ra1 35.Kh2 a5 36.Nb3 a4 37.Na1 a3?? 38.Ba3+/– e4 39.Nc2 f5 40.Bd6 g6 41.Kg3 Kf7 (42.Nb4 Nb4 43.Bb4 g5+=). bashful – abc1, Live Game Caissa's Web, 2004.

7.Nf3 a6 8.Nc3 Nbd7 (--> 5.Nf3 c6 6.a4 0–0 7.c4 a6 8.Nc3 Nbd7).

5.d4 0–0

6.c4 c6 7.c5 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 cb5 11.Bb5 Qa5 12.Nc3 Ne4 13.Qa4 Qa4 14.Na4 (better is 14.Ba4 Bd7 15.Bc2 Nc3 16.Bc3+=) 14...Bd7=+ 15.Bd7 Nd7 16.f3 Ra8 17.fe4 Ra4 18.Ne2?? (better is 18.Bc3–/+) 18...Ra1–+ 0–1. chevin – abc1, Live Game Caissa's Web, 2004.

6.Bd3 a6 7.a4 +=.

6.Bd3 Nbd7 7.Nf3 c5 (7...c6 8.a4=) 8.bc6= bc6 9.0–0 (9.c4 Ba6+=) 9...Rb8 10.Qc1 Nb6 (10...c5 11.c4+=) 11.Ba3= Nfd7 12.Nbd2 (12.Be7 Qe7 13.Qa3 Qa3 14.Na3 Re8=) 12...c5 13.dc5 (13.Rb1 c4 14.Be2 f6=) 13...Nc5 14.Bc5 (14.Nb3 Qc7=) 14...Bc5+= 15.Nb3 (15.Rd1 Bb7+=) 15...Bd6–/+ 16.Nfd4 f5 (16...Bd7 17.Rb1–/+) 17.f4+= Bd7 18.Nb5 (18.Rb1 Qc7+=) 18...Bb5 19.Bb5 Nd7 (19...Qf6 20.Nd4+=) 20.Nd4= Nc5 21.Bd3 (21.c4 Qf6=) 21...Rc8 (21...Qf6 22.Qa3+=) 22.Qd1 (22.Qd2 Qf6+= (worse is 22...Nd3 23.Ne6 Qf6 24.Nf8+=)) 22...Rf6 (22...Qf6 23.Nb5 Bb8 24.Rb1+=) 23.Nf3 (23.Rb1 Qa5+=) 23...Qc7 (23...Ne4 24.Qe1–/+) 24.Rb1 (24.Nd4 Na4+=) 24...Na4 (24...Ne4 25.Rb3+=) 25.Rb3 (25.Qe1 Nc3 26.Rb2 Ne4+=) 25...Bc5 (25...Nc3 26.Qd2 a5+=) 26.Re1? (better is 26.Bb5!? Nb6 27.Rf2+=) 26...Qf4–/+ 27.Ba6 Rcf8 28.Kh1 Qd6 (28...Qc7–+) 29.Bf1 (29.Bb5 Nb6–/+) 29...Rh6 (29...Bb4 30.c3 Bc3 31.Re2–+) 30.h3 (30.Bb5!? Nb6–/+) 30...Bb6 (30...Bb4 31.Nd2–+) 31.c4 Nc5 32.Rb2 Ne4 33.cd5 ed5 34.Bc4?? dc4 0–1. Uhlir,Vaclav (1815) – Novak,Vaclav (2040), Czechia KP–chTB, 2007.

6.Nf3 a6 7.a4 c6 8.c4 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qa5 13.Nc3 Ne4 14.Qa4 Bb4 15.0–0 Nc3 16.Qa5 Ba5 0–1. NN – COMP, 2000.

6.Nf3 Bb4 7.Nbd2 Bd7 8.a4 Re8 9.c3 Bd6 10.Bd3 h6 11.0–0 c6 12.c4 cb5 13.c5 Bc7 14.ab5 Ba5 15.Nb3 Bc7 16.b6 Bb6 17.cb6 Qb6 18.Ne5 Nc6 19.Nd7 Nd7 20.Qc2 Nb4 21.Qc3 Nd3 22.Qd3 Reb8 23.Rfc1 a6 24.Rc3 a5 25.Rb1 Nf6 26.Nc5 Qd8 27.Ba3 b6 28.Nb3 b5 29.Rc2 b4 30.Bb2 a4 31.Nc5 b3 32.Rc3 a3 33.Ba3 Ra3 34.Rcb3 Rbb3 35.Nb3 Qe8 36.h3 Qc6 37.f4 Qc4 38.Qc4 dc4 39.Nd2 c3 40.Nf1 g5 41.Rc1 gf4 42.ef4 Ra4 43.Rc3 Rd4 44.g3 Nd5 ½–½. Bonetti,Shane – COMP, 2000.

6.c4 c5

7.Nf3 a6 8.a4 ab5 (8...Nbd7 9.cd5 (9.Nc3 ab5 10.ab5 Ra1 11.Ba1 cd4 12.Nd4 Nb6 13.cd5=) 9...ed5 10.dc5 Nc5 11.Be2 Bf5 12.0–0 ab5 13.Bb5=; 8...b6 9.Be2 (9.Bd3 dc4 10.Bc4 Bb7 11.0–0 cd4 12.Bd4 ab5 13.ab5=) 9...cd4 10.Bd4 dc4 11.Bc4 Bb7 12.Nbd2 ab5 13.ab5=) 9.ab5 (9.cb5 c4 10.Be2 Nbd7 11.0–0 Ne4 12.Qc2 Ndf6 13.Ne5=) 9...Ra1 10.Ba1 Qa5 (10...Nbd7 11.cd5 Nd5 12.Bd3 Qc7 13.Qc1=) 11.Bc3 Qa2 (11...Qc7 12.Nbd2 Nbd7 13.Bd3=) 12.Nbd2 cd4 (12...Nbd7 13.Be2=) 13.Nd4 (13.Bd4=) 13...Re8 14.Qb3 Qb3 15.N4b3 Bd7 16.Bd3 Rc8 17.Bf6 Bf6 18.Ke2 g6 19.Rc1 dc4 20.Rc4 Rc4 21.Bc4 Be7 22.f4 Kf8 23.Ne4 Bc8 24.Kd3 Nd7 25.Kd4 b6 26.g3 h6 27.h4 Bb7 28.Kd3 e5 29.Nc3 ef4 30.ef4 Bb4 31.g4 1–0. katchum (2570) – jromero (2545), net–chess.com, 2014.

7.Nf3 a6 8.Qa4 A) 8...Nfd7 9.cd5 (9.Qc2 ab5 10.cd5 ed5 11.dc5 Nc5 12.Bb5 Bd7 13.Be2=) 9...ed5 10.dc5 Nc5 11.Qc2 b6 12.Nc3 Be6 13.Rd1=; B) 8...Nbd7 9.ba6 (9.cd5 ed5 10.dc5 Nc5 11.Qd4 ab5 12.Bb5 Qa5 13.Nc3–+) 9...Ra6 10.Qc2 cd4 11.Nd4 e5 12.Nf5 Bb4 13.Nc3+=.

7.Nf3 a6 8.ba6 A) 8...Na6 9.cd5 (9.Be2 Bd7 10.Nc3 dc4 11.Bc4 Qa5 12.Ne5 cd4 13.Qd4+=) 9...Nd5 10.Nc3 b6 11.dc5 Nc3 12.Bc3 Nc5 13.Qc2+=; B) 8...b6 9.dc5 (9.Ne5 Ba6 10.Qf3 cd4 11.Bd4 Bb4 12.Kd1 Ra7 13.a3+=) 9...bc5 10.Nbd2 Nc6 11.Bd3 Ba6 12.0–0 Qc7 13.Qe2+=.

7.Nf3 a6 8.dc5 A) 8...dc4 9.Bc4 (9.Qd8 Rd8 10.Bc4 ab5 11.Bb5 Bd7 12.a4 Ne4 13.Bd7=) 9...Qd1 10.Kd1 ab5 11.Bb5 Ra5 12.a4 Ne4 13.Ke2=; B) 8...Bc5 9.Be2 (9.cd5 Nd5 10.Qc2 Qc7 11.e4 Nf4 12.Nc3 Rd8 13.Rc1+=) 9...Bd7 10.ba6 Na6 11.cd5 Bb4 12.Nfd2 Nd5 13.0–0=.

7.Nf3 a6 8.cd5 A) 8...cd4 9.Bd4 (9.de6 Bb4 10.Nbd2 fe6 11.Bd4 Ne4 12.Qb3 Qa5 13.Qc2+=) 9...Nd5 10.e4 Bb4 11.Nbd2 Nc3 12.Qc2 Nb5 13.Bb5=; B) 8...Nd5 9.e4 (9.dc5 Bc5 10.Qc2 Qc7 11.e4 Nf4 12.Nc3 Rd8 13.Rc1+=) 9...Qa5 10.Nbd2 Nf4 11.g3 Ng6 12.Qb3 cd4 13.Bd4=.

5.Be2 0–0

6.f4 c5 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Be7 6.Nf3 0–0 7.Be2).

6.Nf3

6.Nf3 (--> 5.Nf3 0–0 6.Be2).

6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0–0 9.Be2).

6.f4! a6=+

7.a4 c6 8.bc6 Nc6 9.Nf3 Bd6 10.Nc3 d4=+ 11.Na2 de3 12.de3 Nd5 13.Qd3 Qa5 14.Kf2 Bc5 15.Ng5 f5 16.Kg3 Be3–+ 17.Bc1 Bc1 18.Rhc1 h6 19.Nh3 Qa4 20.c4 Nf6 21.Nc3 Qb4 22.Qe3 Ng4 23.Bg4 fg4 24.Nf2 e5 25.fe5–/+ Qc4 26.Na4 Qb4 27.Nb6 Nd4 28.Qe4 Nf5 29.Qf5 Rf5 30.Nd5 (30.Na8 Qf4 31.Kh4 Qf2 32.g3 Qh2 33.Kg4 Qh5) 0–1. Comet B25 – Doctor? 3.0, 2004.

7.a4 c6 8.Nf3 Bd7 9.bc6 Nc6 10.Nc3 Qb6 11.Rb1 Ng4 12.Ba3 Bb4 13.Bb4 Nb4 14.Na2 Ba4? 15.Rb4+– Qa5 16.Nd4 Bc6 17.Bg4 Qa2 18.f5 a5 19.Rb6 ef5 20.Bf5 Qc4 21.Qg4 Qc5 22.Rb2 Qa3 23.Rb1 Rfe8 24.Nc6 bc6 25.0–0 a4 26.Bd7 Re4 27.Qf5 Qc5 28.Qf7 Kh8 29.Bc6! Rd8 30.Rb5 Qe7 31.Rd5 Rc8 32.Qf5 Rb8 1–0. Crafty 19.01 – Doctor? 3.0, 2004.

7.Nc3 ab5 8.Bb5 c6 9.Be2 d4 10.ed4 Qd4 11.Nf3 Qf4 12.0–0 Bc5 13.d4 Rd8 14.Nb1 e5–+ 15.c3 Qe3 16.Kh1 Bg4 17.Bc1–/+ Qe4 18.Nbd2 Qe3 19.dc5 Qc3 20.Rb1 Bf3 21.Rf3 Qc5 22.Rb7 e4 23.Rfb3 e3 24.Qg1 Qc2 25.Rb2 Qc5? 26.Nc4 Ng4 27.Bg4 Qc4 28.Be2 Qe6 29.Qe3 Na6 30.Qe6 fe6 31.R7b6 Nc5 32.Rc6 Na4 33.Rb4 Rac8 34.Rc8 Rc8 35.Bc4 Nc5 36.Be3 Kf7 37.a4 Kf6 38.a5 Rc6 39.Bb5 Ra6 40.Ba6 Na6 41.Rb6 Nc7 1–0. EXchess 3.11 – Doctor? 3.0, 2004.

7.Nf3 Nbd7 8.ba6 b6 9.0–0 Ba6 10.Ba6 Ra6 11.Ne5 Re8 12.Nc6 Qa8 13.Ne7 Re7 14.Nc3 Nc5 15.Rb1 Rd7 16.Qf3 Nce4 17.Ne4 de4 18.Qg3 Ne8 19.Rfd1 Ra2 20.Ra1 Qa4 21.c3?? Rd3 22.Qg4 Nf6 23.Qe2 Nd5?? 24.Re1?? c6+– 25.Red1?? e5?? 26.fe5?? Ne3?? 27.de3 f6? 28.Rf1 fe5?? 29.Qf2 Qa8 30.Qf7 Kh8 31.Qf8 Qf8 32.Rf8 1–0. Fritz 5.32 – Comet B25, 2004.

7.a4 ab5

8.Bb5 b6 9.Nf3 c6 10.Be2 Ba6 11.0–0 Be2 12.Qe2 Ne4 13.d3 Bf6 14.Ne5 Nc5 15.Nc3 d4 16.Ne4 Be5 17.Nc5= Bd6 18.Nb7+/– Qd7 19.Nd6 Qd6 20.Bd4 Nd7 21.Qg4 f6 22.Rf3 Rfd8 23.Rg3 g6 24.Qh4 e5 25.fe5 fe5 26.Bb2 Rf8 27.Qh6 Nc5 28.Rg4 Ra5 29.Rb4. Crafty 19.01 – Fritz 5.32, 2004.

8.Bb5 Bd7 9.Nf3 c6 10.Be2 Qb6 11.Ba3 c5–/+ 12.Nc3 Ne4 13.Ne4 de4 14.Ne5 Ba4 15.0–0 Rd8 16.Bh5 g6 17.Bg4 Nc6 18.Nc4 Qa6 19.Be2 b5 20.Nb2 Qa5–+ 21.d3 ed3 22.Bd3 Bf6 23.Qe2–/+ Nb4 24.Be4? Nd5 25.c4? Nc3 26.Qf3 Ne4 27.Qe4 b4 28.Bb4 Qb4 29.Ra4 Ra4 30.Na4 Qa4 31.g4 Rd2 32.g5 Bc3 33.Rb1 Qa2 34.h4 0–1. Crafty 19.01 – Comet B50, 2004.

8.Bb5 Ne4 9.Nf3 Bh4 10.g3 Bf6 11.Ne5 c6 12.Bf1 Nd7 13.Be2 Ndc5 14.a5 Ra5 15.Ra5 Qa5 16.0–0 Re8 17.Bd4 Rd8 18.d3 Nd6 19.Qd2 Qb5 20.Na3 Qb6 21.Qc3 Nc4? 22.dc4+– Qa7 23.cd5 Rd5 24.Bf3 Be7 25.Ra1 Rd8 26.Nb1 Qb6 27.Nc4 Qc7 28.Be5 Qd7 29.Nb6 Qe8 30.Bg7 Nd7 31.Nc8 Rc8 32.Ra7 f6 33.Bh6 Nc5 34.Qc4 Qg6 35.Rb7! Qe8 36.f5 Kh8 37.Qg4 Qf7 1–0. Crafty 19.01 – Comet B25, 2004.

8.ab5 Ra1

9.Ba1 c6 10.Nf3 Bd7 11.bc6 (11.Nc3 Qa5 12.Qb1 cb5 13.Nb5 Nc6=) 11...bc6 (11...Nc6 12.Nc3+=) 12.0–0= c5 13.c4 Nc6 14.Ne5 Ne4 15.d3 Nd6 16.Bf3 (better is 16.cd5 ed5 17.Nc3=) 16...Ne5–/+ 17.fe5 Nf5 18.Re1 (18.Qe2 Bg5 19.e4–/+) 18...Bc6 (better is 18...Bg5!? 19.e4 Ne3–+) 19.e4 (19.cd5 ed5 (worse is 19...Bd5 20.e4+/–) 20.Bg4 Nh6+=) 19...de4–/+ 20.Be4 Be4 21.Re4 (21.de4!? Nd4 22.Qd3–/+) 21…Qb6 ½–½. Ramme,C (2105) – Rasmussen,He2 (1825), Copenhagen DEN, Politiken Cup, 2011.

9.Ba1 Bd7 10.Nf3 c6 11.Nc3 =.

9.Ba1 Bd7 10.Nf3= Ne4 11.0–0 f6 12.d3 Nd6 13.c4 Nf5 14.Qd2 dc4 15.dc4 Bc5 16.Nd4 Qe7 17.Nf5 ef5 18.Bd4 Be6 19.Nc3 Nd7 20.Rd1 Bb4 21.Qc2 Nb6 22.Bb6 cb6 23.Kh1 Bc5 24.Bd3 g6 25.e4 fe4 26.Ne4 Bg4 27.Rf1 Bd4 28.Nf2+/– Bh5 29.g4+– Bf2 30.gh5 Be3 31.hg6 Kh8 32.f5 hg6 33.fg6 Rd8 34.Qd1 Qe5 35.Qf3 Rd3 36.Qh3 Qh5 37.Qh5 Kg8 38.Qh7 Kf8 39.Qf7 1–0. Doctor? 3.0 – Comet B50, 2004.

9.Ba1 Bd7 10.Nf3 Re8 11.0–0 Bb4 12.Be5 Ne4 13.d3 Nd6 14.c4 f6 15.Bd4 dc4 16.dc4+= Nf5 17.Ba7 b6 18.Bb8 Bd6 19.Bc7 Qc7 20.Qd2 Bc5=+ 21.Nd4 e5 22.Nf5 Bf5 23.Kh1 ef4 24.ef4 Rd8 25.Qc1 Rd4 26.Nc3 Be6 27.Na4 Qd6 28.Nc5 Qc5 29.Qe3 Kf7 30.Re1 Qd6 31.Bg4 f5 32.Be2 Kg8 33.g3 Re4 34.Qc3 Qc5 35.Bd3 Bd5 36.Be4 Be4 37.Re4 fe4 38.Kg2 g6 39.Qe5 Qc4= 40.Qb8 Kf7 41.Qb6 Qe2 42.Qf2 Qb5 43.Qa7 Kf6 44.Qh7 Qe2 45.Kh3 Qf1 46.Kh4 e3 47.Qh8 Kf7 48.Kg5 Qb5 49.Kg4 Qe2 50.Kh3 Qf1 51.Kh4 e2 52.Qh7 Kf6 53.Qh8 Ke7 54.Qg7 Kd8 55.Qf6 Kc7 56.Qf7 Kc8 57.Qg8 Kc7 58.Qc4 Kd6 59.Qb4 Kd5=+ 60.Qb7 Kc5 61.Qa7 Kc4 62.Qa6 Kb4 63.Qb6 Kc3 64.Qa5 Kd3–/+ 65.Qa3 Ke4 66.Qa4?? Kf3–+ 67.Qc6 Kf2 68.Qc2 Kg1 69.f5 e1Q 70.Qc5 Kh2 71.Qc2 0–1. Doctor? 3.0 – Comet B25, 2004.

9.Ba1 Bd7 10.Nf3 h6 11.0–0 c6 12.Nc3 Qa5 13.bc6 Nc6 14.Ne5 Ra8 15.Nd7 Nd7 16.Nb5 Bb4 17.Bc3 Bc3 18.Nc3 d4 19.Nb5 de3 20.de3= Nf6 21.Nd6 Qc5 22.Qd2? Rd8–+ 23.Rd1 Ne8 24.Bf1 Nd6 25.Qe2 Ra8 26.g3 Ra2 27.Bg2 Rc2 28.Qd3 (28.Qf3 Nc4 29.Rd3 Rc1 30.Kf2 Qa5–+) 0–1. Comet B25 – Comet B50, 2004.

9.Ba1 Nbd7 10.Nf3 =+.

9.Ba1 Ne4

10.Nf3 c5 11.Nc3 Bh4 12.g3 Bf6 13.Ne4 de4 14.Bf6 Qf6 15.Ng5 Qg6 16.d3 ed3 17.Bd3 f5 18.Qa1 h6 19.Nf3 Nd7 20.Ne5 Qf6 21.0–0 Ne5 22.Qe5 Qe5 23.fe5 Bd7 24.Bc4 Kh7 25.Rd1 Rf7 26.Rd6 Re7 27.Kf2 Kg6 28.Kf3 Kh5 29.Rb6 Bc8+= 30.e4 Kg5 31.h3 Kg6 32.Rd6 fe4 33.Ke4 Bd7 34.h4 Kh5 35.Be2 Kg6 36.c3 Kh7 37.Rb6 Be8 38.h5 g6 39.g4 gh5 40.gh5 Kg8 41.Kd3 Rc7 42.Kc4 Bd7 43.Bf3 Bc8 44.Rd6 Kf8 45.b6 Rf7 46.Bd1 Ke7 47.Kc5 Rf5 48.Kd4 Bd7 49.Be2 Be8 50.Bg4?? Rf4–+ 51.Ke3 Rg4 52.Rd4 Rg3 53.Kf4 0–1. Comet B25 – Crafty 19.01, 2004.

10.Nf3 c5 11.bc6 bc6 12.0–0 Qa5 13.Be5 Nd7 14.d3 Ne5 15.fe5 Ng5 16.Nbd2 Bb7 17.d4= c5 18.Nb3 Qc7 19.Ng5+= Bg5 20.Nc5 Be3 21.Kh1 Bc6 22.Qd3 Bg5 23.Qg3 Be7= 24.Nb3 f5 25.Qc3 Rc8 26.Qg3 Ba4 27.Ba6 Rb8 28.Qd3 Rb6 29.Qe2 Qc3 30.Rd1 Bb3 31.cb3 Rb3 32.Qh5 g6 33.Qe2 Rb2 34.Qf1 Bg5 35.Bb5 Rd2 36.Bd7 Kf7 37.Rd2 Qd2 38.Be6 Ke6 39.Qa6 Kf7 40.Qb7 Kf8 41.Qa8 Kg7 42.Qa7 Kh6 43.Qa1 Be3 44.e6 Bd4 45.Qb1 Qe3 46.Qd1 Kg7 47.Qb1 Kf6 48.e7 0–1. Doctor? 3.0 – Crafty 19.01, 2004.

10.Nf3 Bh4

11.g3 Be7 12.0–0 Nd7 13.d3 Nec5 14.Nfd2 Bf6 15.Bf6 Qf6 16.d4 Ne4 17.Bf3 Nd6 18.Qe2 Re8 19.Nc3 Nb6 20.Ra1 Nbc4 21.Nc4 Nc4 22.Ra7 h6 23.Bg2 c5 24.bc6 bc6= 25.Qd3 Re7 26.Ra8 Re8 27.Ne4 Qg6 28.Ra7 Rd8 29.c3 Rd7 30.Ra1 Rb7 31.Kh1? Nb2–+ 32.Qc2 de4 33.Be4 Qh5?? 34.Bc6?? Rb6–/+ 35.Bg2 Nc4 36.Qd3 Ra6–/+ 37.Rc1 Ra4 38.Bc6 Ra2–+ 39.Bg2 Bb7! 40.e4 (40.Bb7 Qh2). Doctor? 3.0 – Fritz 5.32, 2004.

11.g3 Bf6

12.Nc3 Bc3 13.Bc3 Nc3 14.dc3 Qf6 15.Qd3 Nd7 16.Ng5 Qf5 17.Qf5 ef5 18.Rg1 Re8 19.Kf2 f6 20.Nf3 Nc5=+ 21.Nd2 Ne4 22.Ne4 Re4 23.Bf3 Ra4 24.Bd5 Kf8 25.Rd1 Ke7 26.Bb3 Ra5+/– 27.c4 g5 28.Rd4 h5 29.Ke2 c5 30.bc6 bc6+= 31.Rd2 c5 32.h4 gh4 33.gh4 Ba6 34.Rd5 Ke6 35.Rd8 Ra1 36.Rh8 Rb1 37.Rh5 Rg1 38.Kf2 Rd1 39.Kg3 Rg1+/– 40.Kf3 Bb7 41.Kf2 Rg2 42.Kf1 Bc6 43.c3 Rb2 44.Bd1 Rd2?? 45.Ke1 Rd1! 46.Kd1 Bf3 47.Ke1 Bh5 48.Kf2 Bf7 49.Kg3 Bh5 50.Kf2 Bg4 51.Kg3 Be2 52.Kf2 Bc4 53.Kf3 Bd5 54.Kg3 Bc6 55.h5 c4 56.Kh2 Kf7–+ 57.Kh3 Be4 58.h6? Kg6 59.Kh4 Kh6 1–0. Comet B25 – Fritz 5.32, 2004.

12.Nc3 Bc3 13.Bc3 Nc3 14.dc3 Qf6 15.Ne5 =+.

12.Nc3 Bc3 13.Bc3 Nc3 14.Kf2?? Nd1–+ 15.Rd1 c5 16.bc6 Nc6 17.Kf1 0–1. Comet B50 – Fritz 6, 2004.

12.Bf6 gf6 13.d3 Nd6 14.Nc3 +=.

12.Bf6 Qf6 13.0–0 Nd7 14.Nd4 Nb6 15.d3 Nd6 16.Bf3 Bd7 17.Nc3 Ra8 18.Bg2 Nf5 19.Nf5 Qf5 20.d4 Na4 21.Na4 Ra4 22.Qb1 b6 23.Qb3–/+ Ra7 24.Rd1 Qg4 25.Re1 Qh5 26.Qb4 h6 27.Bf1 f5 28.Qe7+= Qe8 29.Qe8 Be8 30.Bd3 Ra2 31.Rb1 g5 32.h4 g4 33.Kf2 Kf7 34.Rb3 Ke7 35.Ke2 Kd6 36.Kd2 Bd7 37.Be2 Bc8 38.Kd3 Ra1 39.Kc3 Rg1–/+ 40.Ra3 Rg3 41.Kd3 Rh3 42.Rc3? Bd7–+ 43.Rb3 Rh4 44.c4 Rh2 45.Rb2 g3 46.Rc2 dc4 47.Kc4 g2 48.Rc1 Rh1 49.Rf1 Rf1 50.Kd3 0–1. Doctor? 3.0 – Fritz 6, 2004.

7.ba6 Na6

8.Nf3 Nc5 9.0–0 Nce4 10.Ne5 Qd6 11.d3 Qb6 12.Qc1 Bc5 13.d4 Bd6 14.c4 Rd8 15.c5+= Nc5 16.dc5 Bc5 17.Rf3 Ne4 18.Nc3 Nc3 19.Bc3 d4 20.ed4 Bd4 21.Bd4 Qd4 22.Kh1 b6?? 23.Rd3 c5 24.Rd4 cd4 25.Qc7 Rf8 1–0. Fritz 6 – Fritz 5.32, 2004.

8.Nf3 Qd6 9.0–0 Re8 10.Be5= Qb6 11.Nc3 Bd7 12.Rb1 Nb4 13.Rb3 Qc5 14.a3+/– Nc6 15.Rb7 Ne5 16.fe5 Ng4 17.Nb1 Reb8 18.Rb8 Rb8 19.c3 Qa7 20.Qc1 f6 21.ef6 Bf6 22.h3 Nh6 23.c4 Bb2 24.Qe1 c6 25.d4+/– Nf5 26.Bd3 Ba3 27.Na3+/– Qa3 28.Ne5 Qd6 29.c5 Qc7 30.Qc3 Qd8 31.Rf3 Qe7 32.e4 de4 33.Be4 Qe8 34.g4 Ne7 35.Qc2 g6 36.Rf7 Rb4 37.Qf2 h5?? 38.Qf6 Nf5 39.Qg6 Ng7 40.Qg7 1–0. Fritz 6 – Comet B50, 2004.

8.Nf3 Bd7 9.0–0 c5 10.Nc3 c4 11.Rb1 Nb4 12.a3 Nc6 13.Ne5 Ra5 14.Qe1 Qc7 15.Nd7 Qd7 16.a4 Nb4 17.Bd1 Rfa8 18.Qg3 d4 19.ed4 Qd4 20.Kh1 Nc6 21.Bf3 Qd7 22.d3 cd3 23.Rbd1 Nb4 24.cd3 R8a6 25.Be4 Nh5 26.Qf3+= Nc6 27.f5 Nf6 28.fe6 Qe6 29.Bf5 Qb3 30.Qe2 Ra8 31.Rb1 Rd8? 32.Qd2 Bb4= 33.Qc1 Ne7 34.Nb5 Qa4 35.Bf6 Rb5 36.Qg5 Nf5 37.Rf5 Bf8 38.Rfb5 Rd3 39.Rf1 Rd1 40.Rbf5 Qc2 41.Qg4 Rf1 42.Rf1 b5 43.Bd4 b4 44.Qf3 f6 45.Qd5 Kh8 46.Qf7 Qc8 47.Rf6! Qc1 48.Rf1 Qf1 49.Qf1 Bd6 50.Qf7 Bh2 51.Qg7 1–0. Fritz 6 – Doctor? 3.0, 2004.

8.Nf3 Ne4 9.0–0 Bd7 10.Ne5 f6 11.Nd7 Qd7 12.Nc3 Nd6 13.Ba3 Nf5 14.Be7 Qe7 15.Bg4 Nh6 16.f5 Nc5 17.fe6 c6 18.Bh3 b5 19.d4 Ne6 20.Qf3 Ng5 21.Qg3 Ra3 22.Nd1 Rfa8 23.Nf2 Re3 24.Qf4 Re2 25.Bf5 Nf5 26.Qf5 Qe3 27.Qd7 Rc2 28.Rae1 Qa3 29.Re7 g6 30.h4 Kf8= 31.Rfe1 Ne4?? 32.Rh7 Qe7 33.Qe7 Kg8 34.Qg7 1–0. Fritz 6 – Comet B25, 2004.

8.Nf3 Ng4 9.0–0= f5 10.Nc3 Bd7 11.h3 Nf6 12.Ne5 Nc5 13.Qe1 Nce4 14.d3 Nc3 15.Qc3 Bb5 16.Qb3 Ba6 17.Rfb1 Re8 18.Qc3 Bd6 19.a4 Qe7 20.Ba3 Ne4 21.de4 Be2 22.Rb7 Ra4 23.Bd6 Ra1 24.Qa1 Qd6 25.Qa5 fe4 26.Qc7 Qf8 27.Qc6+/– Bh5 28.g4+– Bg6 29.f5! ef5 30.Qd5 Kh8 31.gf5 Rd8 32.Rd7 Rd7 33.Nd7 Qf7 34.Qa8 Qe8 35.Qe8 Be8 36.Ne5 h6 37.c4 Kh7 38.c5 Bb5 39.Kh2 Ba6 40.Kg3 Be2 41.Kf4 Bf1 42.c6 Ba6 43.Ke4 Bc8 44.c7 h5 45.Kf4 Bb7 46.Kg5 Ba6 47.Kh5 Bc8 48.e4 Kg8 1–0. Fritz 6 – Crafty 19.01, 2004.

7.Nc3 d4

8.ed4=+ Qd4

9.Nh3 Nd5 10.ba6 Nf4 11.Nf4 Qf4 12.ab7 Bb7 13.Bf3 Bh4 14.Ke2 Bf3=+ 15.gf3 Nc6 16.Ne4 Rfb8 17.Qc1 f5 18.Nf2 e5 19.Nd3–/+ Nd4 20.Bd4 Qd4 21.Qg1 c6 22.Rb1 Rb1–/+ 23.Qd4 ed4 24.Rb1 Ra2 25.Nb4 d3 26.cd3+= Ra8 27.Nc6 Re8 28.Kd1 Kf7 29.Rb7 Kf6 30.d4 Re1 31.Kc2 Rh1 32.Ne5 Rh2 33.Rf7 Ke6 34.Rg7 Bf6 35.Rc7 Be5 36.de5 Ke5 37.Kc3 h5 38.d4 Kf4 39.Rc5 Rh3 40.d5 Rf3 41.Kc4 Ke5 42.Rc7 h4 43.Re7 Kd6 44.Re6 Kd7 45.Rc6 h3–+ 46.Rg6 h2 47.Rg7 Kd6 48.Rg6 Ke5 49.Re6 Kf4 50.Re1 Rh3 51.Rh1 Ke4 52.d6 –+. EXchess 3.11 – Fritz 5.32, 2004.

9.Nh3 e5 10.ba6 Na6 11.fe5 Bh3 12.gh3 Bc5 13.Qc1 Qe5 14.Nb5 Qe4 15.Rf1 Rfe8 16.Nc3 Qg2 17.Rb1? Qh3 18.Ba1 Bd4 19.Rb7 Qh2 20.Rf6 gf6 21.a4 Qg1 0–1. EXchess 3.11 – Fritz 6, 2004.

9.Nh3 ab5

10.Bb5 Rd8 11.Qe2 Bd7 12.0–0–0 Na6 13.f5 Nb4 14.Bd7 Qd7 15.fe6 Qe6 16.Qe6 fe6 17.Kb1 e5 18.Ng5 Ne8 19.Nf3 e4 20.Ne4 Na2 21.Rde1 Nb4 22.Re2 Ra5 23.Rhe1 Nd6 24.Ng3 Bf8 25.Ne4 Nc4 26.Nc3 Raa8 27.h4 Bc5 28.h5 b6 29.Bc1 c6 30.Ne4 Na2 31.Bb2 Bb4 32.g4 Rd5 33.g5 Rb5= 34.Nd4 Bd2?? 35.Nb5+/– Be1 36.Nc7 Ra4 37.Re1 Rb4 38.Ka2 Rb2 39.Ka1 Rc2 40.g6 hg6+/– 41.Ng5 Nd6 42.hg6 Rc4? 43.Rd1 Nb7 44.Rd7 Ra4 45.Kb2 Rb4 46.Kc3 Rb3 47.Kc2 Rg3 48.Nce6 Rg2 49.Kd1 Rg1 50.Ke2 Rg2 1–0. EXchess 3.11 – Comet B50, 2004.

10.Bb5 Rd8 11.Qe2 Bd7 12.0–0–0 Nc6 13.d3 Bb4 14.Na4 Qd5 15.Bf6 gf6 16.Bc4 Qd4 17.c3 Bc3–+ 18.Nc3 Qc3 19.Qc2 Qa3 20.Qb2 Nb4 21.Qa3 Ra3 22.Rd2 Rda8 23.Kb1 b5 24.Bb3 c6 25.d4–/+ e5 26.de5 Bf5 27.Kb2 Ra2! 28.Ba2 Ra2 29.Kc3 Nd5 30.Rd5 cd5 31.ef6 Rg2 32.Ng5 h6 33.Nf3 Rc2 34.Kb4 Be4 35.Rg1 Kf8 36.Ne5 Rb2 37.Kc5 Rh2 38.Rg7 Rc2 39.Kb5 Bg6 40.Ng6 fg6 41.Rg6 h5 42.Rg5 h4 43.Rd5 h3 44.Rh5 h2 45.f5 Rb2 46.Kc4 Kf7 47.Rh6 Rd2 48.Kc5 Rf2 49.Kc6 Rc2 50.Kd6 Rg2 51.Ke5 Rf2 52.Rh7 Kg8 53.Rh5 Rd2 54.Rg5 Kf8 55.Rh5 Re2 56.Kf4 Rg2 57.Rh7 Kg8 58.Kf3 Rd2 59.Rh6 Kf7 60.Kg3 Re2 61.Rh2 Rh2 62.Kh2 Kf6 63.Kg3 Kf5 ½–½. EXchess 3.11 – Comet B25, 2004.

10.Bb5 Rd8 11.Qe2 Bd7 12.Rd1!? =+.

10.Bb5 Rd8 11.Qe2 Bd7 12.Bd3!? =+.

10.Bb5 e5 11.fe5 Qe5 12.Qe2 Qe2 13.Be2 –/+.

10.Bb5 e5 11.fe5 Bh3 12.ef6 Qh4 13.g3 Qf6 14.d4 Nc6 15.d5 Nd4 16.Bc6?? bc6–+ 17.dc6 Qc6 18.Rg1 Nf3 19.Ke2 0–1. EXchess 3.11 – Crafty 19.01, 2004.

7.Nf3 ab5

8.Bb5 Ra5 9.a4 c6 10.Be2 Nbd7 11.Bc3 Ra8 12.0–0 Nb6 13.a5= Nc4 14.Bc4 dc4 15.Qe2 Qd5 16.Ne5 Qe4 17.Rc1 Bc5 18.Kh1 Nd5 19.Qc4 Qc4 20.Nc4 f6 21.Rf1 b5= 22.ab6 Ra1 23.b7 Nc3?? 24.b8Q= Ba6 25.Qb2 Rb1 26.Rb1 Nb1 27.Qb3 Rf7 28.Qb8 Bf8 29.Qb3 Bc4 30.Qc4 c5 31.d3 e5 32.fe5 fe5 33.Qb3 Nc3 34.e4 Nb5 35.Qd5 Nc7 36.Qb3 g6 37.Kg1 Bh6 38.Kh1 Kg7 39.g3 Be3 40.Qb6 h5 41.c3 Rd7 42.Qc6 Re7 43.Qd6 Kf7–/+ 44.Kg2 Nb5 45.Qb6 Nc7 46.Qd6 Nb5 47.Qb6 Na7 48.Qd6 Nc8 49.Qd5 Re6 50.Kf3 Bg1 51.h3 Ne7 52.Qd7 Rf6–/+ 53.Kg2 Be3 54.g4 h4 55.Qc7 Rf2 56.Kh1 Ke6 57.Qb6 Kd7 58.Qa7 Ke6 59.Qb6–+ Kf7 60.Qc7 Ke6 61.Qb6= ½–½. Comet B50 – Crafty 19.01, 2004.

8.Bb5 Ra5 9.Nd4? c5–+ 10.Bc3 cd4 11.Ba5 Qa5 12.Qe2 Qb4 13.c3 Qb2 14.cd4 Qa1 15.0–0 Qa2 16.Nc3 0–1. Fritz 5.32 – Crafty 19.01, 2004.

8.Bb5 Ra5 9.Nd4? c5–+ 10.Bc3 cd4 11.Ba5 Qa5 12.Qe2 de3 13.0–0 ed2 14.Nd2 Bc5 15.Kh1 Bd7 16.Rfb1 Bd4 17.c3 Bc3 18.Bd7 Ba1 19.Be6 Qa2 20.Qd1 Bc3 21.Nf3 fe6 22.Rb7 (22.Qb3 Qa5–+) 0–1. Fritz 5.32 – Comet B50, 2004.

8.Bb5 Ra5 9.Be2 =+.

8.Bb5 b6 9.a4 c6 10.Be2 Ba6 11.0–0 Be2 12.Qe2 Nbd7 13.Nd4 Qc7 14.Nc3 Bd6 15.Ba3 Nc5 16.Rab1 Rfd8 17.Ra1 h6 18.Rfb1 Rdc8 19.Qf2 e5 20.Nf5= Rcb8 21.Bc5 Bc5 22.fe5+/– Qe5 23.d4+– Qh2?? 24.Kh2 Ng4 25.Kg3 Nf2 26.dc5 Ra5 27.Ne7 Kf8 28.Nc6 Rc5 29.Nb8 Rc3 30.Kf2 Rc2 1–0. Comet B50 – Fritz 5.32, 2004.

8.Bb5 c6 9.Be2 b5 10.0–0 Nbd7 11.Nd4 Qc7 12.d3 Nc5 13.Qd2 Na4 14.Ba3 b4 15.Bc1 c5–/+ 16.Nb3 c4 17.Nd4 Ba6 18.Bf3 Rfb8 19.Re1 c3 20.Qf2 Bc5 21.Qh4 Qb6 22.Nb3 Be7 23.a3 Qc7 24.Be2 Nc5 25.Nc5 Bc5 26.d4 Be2–/+ 27.Re2 Be7 28.Qg5 ba3 29.Na3 Ba3 30.Ba3–/+ Ra3! 31.Ra3 Rb1 32.Kf2 Ne4 33.Kf3 Ng5 34.fg5 Qh2 35.Rc3 Qh5 36.Kf2 0–1. Crafty 19.01 – Fritz 6, 2004.

8.Bb5 Bd7 9.Nc3 Ra5 10.a4 c6 11.Be2 Na6 12.0–0 Re8 13.Ng5 h6 14.Nf3 Nc5 15.Ne5 Bd6 16.Bh5 Re7 17.Ba3 Be8 18.Bb4 Ra8 19.d4 Nce4 20.Ne4 Ne4 21.Bd6 Qd6 22.Bf3 c5 23.c4 b6 24.Be4 de4 25.Qc2 f5 26.dc5 Qc5= 27.Qb3 g5 28.Rf2 Rea7= 29.Rb1 Ra6 30.a5 ba5 31.Rbb2 a4–/+ 32.Qc3 Rd8 33.Rb7 Rd1 34.Rf1 Rf1 35.Kf1 Qd6 36.Kf2 gf4 37.ef4 Qc5 38.Kf1 Bh5 39.Rg7 Kg7?? 40.Nd7+– Qe5 41.Qe5 Kf7 42.Qc7 Kg6 43.Ne5 Kf6 44.Qd8 Kg7 45.Qe7 Kh8 46.Qf8 Kh7 47.Qc8 Ra7 48.Qe6 Kg7 49.Qf5 Bf7 (49...Be8 50.Ke2+–) 1–0. Comet B50 – Comet B25, 2004.

8.Bb5 Bd7 9.Nc3 Bb5 10.Nb5 c6 11.Nbd4 =+.

8.Bb5 Bd7 9.Be2 Nc6 10.0–0 Bc5 11.Ne5 d4 12.Rf3 de3 13.de3 Ne5 14.fe5 Bc6?? 15.ef6 Bf3= 16.Bf3 Be3 17.Kh1 Qd1= 18.Bd1 Rfd8 19.Bf3 g6 20.a4 Ra5 21.Bc3 Ra6 22.a5 Bf4? 23.g3+– Be3 24.Bb7 Ra7 25.a6 g5 26.Kg2 g4 27.h3 h5 28.Bc6 Rd6 29.Bb7?? c6?? 30.hg4+– hg4 31.Ra4 Rd1 32.Rg4 Kf8 33.Rh4 Kg8 34.Kf3 Bc5 35.Nd2 Re1 36.Ne4 Rf1 37.Ke2 Rf5 38.g4 Rd5 39.Bc6 Rd6 40.Nd6 Bd6 41.Bb7 Bc5 (41...e5 42.Ba5 Bc5 43.g5+–) 1–0. Fritz 5.32 – Doctor? 3.0, 2004.

8.Bb5 Bd7 9.Be2 Ne4 10.Nc3 Bf6 11.Ne5 Be5 12.fe5 Qh4 13.g3 Ng3! 14.hg3 Qh1 15.Bf1 f6 16.ef6 Rf6 17.Qe2 Na6 18.Nd1 Nb4 19.Bf6 Nc2 20.Kf2 Rf8 21.Qf3 Qf3 22.Kf3 Rf6 23.Kg2 0–1. Fritz 5.32 – Fritz 6, 2004.

6.f4! Ne4

7.Nc3 Bh4 8.g3 Nc3 9.Bc3 Bf6 10.Bf6 Qf6 11.Nf3 a6 12.Bd3 ab5 13.Ng5 Rd8 14.Bh7+= Kf8 15.Bd3 Qb2 16.Rb1 Qa2 17.Rb5 Qa7 18.Qh5 g6 19.Qh7 Qa1 20.Ke2 Qg7 21.Qh4 Ke8= 22.Nh7 Nd7 23.Rbb1 Ra2 24.Bb5 c6 25.Bd3 b6 26.h3 Bb7 27.Rhf1 Rda8 28.Ng5 Ba6 29.Ba6 R8a6 30.Kd1 R6a3 31.Nf3 Ra4 32.Nd4 c5 33.Nb5 f6 34.Nd6 Kd8 35.Qg4 Qe7 36.Nb5 Ne5 37.Qh4 Nc6 38.Qh8=+ Kd7 39.Qg8 Ra1 40.Ke2 Rb1 41.Rb1 g5 42.fg5 fg5 43.Kd1 c4 44.g4 Ra6 45.Ke2 Ra5 46.c3 Ra2=+ 47.Rf1 Nd8 48.Rf8 Kc8 49.Rf7!+– Qc5 50.Na7 Ra7 51.Ra7 Kb8 52.Rd7 Qc7 53.Rc7 Kc7 54.Qg5 Kd7 1–0. Comet B50 – EXchess 3.11, 2004.

7.Nc3 Bh4 8.g3 Bf6 9.d4 c6 10.Ne4 de4 11.a4 a5 12.Ba3= Re8 13.c4 Qc7 14.Qc2 Bd7 15.Qe4 cb5= 16.ab5 Bb5 17.Nf3 Bc6 18.Qb1 Nd7 19.0–0 Kh8 20.e4 Rec8 21.Ne5 Ne5 22.fe5 Bg5 23.Bd6 Qd7 24.Ra3 a4? 25.Raf3?? a3 26.Rf7?? a2= 27.Qa1 Be3 28.Kg2 Be4 29.Kh3 Qc6 30.Kh4 Bg6 31.Rf8? Rf8 32.Rf8 Rf8 33.Bf8 Qg2 34.Bf1 Qe4 35.Kh3 Bf5 36.g4 Qg4 0–1. Comet B50 – Doctor? 3.0, 2004.

7.Nf3 Bh4

8.g3 Bf6

9.Qc1 c6 10.a4 a6 11.Ra3 (11.Bf6 Qf6 (worse is 11...gf6 12.Qb2+=) 12.Ra3 b6+=) 11...Re8 (11...Be7 12.Ra1+=) 12.0–0 Be7 13.Ra1 ab5 14.ab5 Ra1 15.Ba1 Qa5 (15...cb5 16.Bb5 Bd7 17.Be2=) 16.Qb2+= Bf6 (16...f6 17.bc6 Nc6 18.c4=) 17.c3 (17.Qa3 Qa3 18.Na3 Be7=) 17...Nd7 18.g4 e5 (18...cb5 19.g5 Be7 20.c4=) 19.g5= Be7 20.c4 (worse is 20.Ne5 Ne5 21.fe5 Bg5–/+ (21...Ng5?! 22.bc6 bc6 23.c4–/+); 20.fe5 Ng5 21.c4 Nf3 22.Bf3 Bf8 23.cd5 Ne5 24.dc6 bc6 25.bc6 Bh3–+) 20...d4 (20...dc4 21.Ne5 c3 22.Nc3 Nc3 23.Qc3+= (worse is 23.dc3 Ne5 24.fe5 Bg5–/+)) 21.d3 (21.fe5!? Ng5 22.Nd4+/–) 21...Nc3 22.Nc3 dc3 23.Qc3 Qc3 24.Bc3 ef4 25.bc6 bc6 26.ef4 Bc5 27.d4 Re2 28.dc5 Rc2 (28...Nc5 29.Ra1 Re8 30.Ne5=) 29.Bd4+/– Nf8 30.Ne5 Ne6 31.Be3 f6 (31...Re2!? 32.Nc6 Kf8+/–) 32.Nc6+– Bb7 33.Ne7 Kf7 (33...Kf8 34.c6 Ba8 35.gf6 gf6 36.Ra1 Rc4 37.Ra8 Ke7 38.Ra7 Kd6 39.Rh7+/–) 34.c6 Ba6 (34...Ba8 35.gf6 gf6 36.Nf5+/–) 35.gf6+– gf6 36.Nf5 Bc4 37.Nd6 (37.Rd1 Bb3 38.Rd7 Kf8+–) 37...Ke7+/– 38.Nc4 Rc4+= ½–½. Schiffler,L – Schmidt,Andreas, Soemmerda, 1950.

9.Nc3 a6 10.a4 Bc3 11.dc3 c6–/+ 12.0–0 ab5 13.ab5 Ra1 14.Qa1 Qb6 15.Nd4 Rd8 16.Qa8 Bd7 17.bc6 bc6 18.Qa3 c5 19.Qb3 Qc7 20.Nb5 Bb5 21.Qb5 Nc6 22.Qa6 c4 23.Ra1 e5 24.Bf3 Nd2 25.Bg2 e4 26.Ba3 Qd7 27.Rd1 Nf3 28.Bf3 ef3 29.Kf2 Qh3–+ 30.Kf3 Qh5 31.g4 Qh3 32.Kf2 Qh2 33.Kf1 Qc2 34.Rc1 Qd3 35.Kf2 Qd2 36.Kf1 Ne7 37.Qb6 Ra8 38.Qb7 Re8 39.Qd7 Kf8 40.Re1 Qd3 41.Re2 h6 42.Bb4 Qb1 43.Kf2 Qh1 44.Bc5 Qe4 45.Rb2 g5 46.fg5= Qe5 47.Be7 Re7 48.Qd8 Re8 49.Qb6 Qh2 50.Kf1 Qh1 51.Kf2 Qh4 52.Kf1 Qg5 53.Re2 Re4 54.Qb7 Rg4 55.Qc8 Kg7 56.Ke1 Rg1 57.Kd2 Qg6 58.e4 Qg5 59.Re3 0–1. Comet B25 – Fritz 6, 2004.

9.Nc3 Nc3 10.Bc3 Bc3 11.dc3 a6 12.a4 Qf6 13.Qd4 ab5 14.Qf6= gf6 15.Bb5 Nd7 16.0–0 Re8 17.Rfb1 c6 18.Bd3 Nc5 19.a5 e5 20.fe5 fe5 21.Nh4 e4 22.Be2 Ne6 23.Nf5= Ng5 24.Nd6 Re7 25.c4 Rd7 26.Nc8 Rc8= 27.Bg4 Ne6 28.Ra4 Re8 29.cd5+/– cd5 30.c4 Ree7 31.cd5 Rd5 32.Be6 Re6 33.Rb7 Ra6 34.Re4 Rda5 35.Rg4 Rg6 36.Rf4 f5 37.Kg2 h5 38.Kf3 Re6 39.Rh4+– Ra3 40.Rh5 Ree3 41.Kf4 Rf3 42.Kg5 Ra8 43.Rhh7 Re8?? 44.Rhe7 Rc8 45.Rbc7 Kf8 46.Rc8 Ke7 47.Rc6 Rf2 48.h4 Rf3 49.h5 Rg3 50.Kf5 Rg2 51.Rc8 Rf2 52.Kg6 Rg2 53.Kh7 Kf6 54.h6 Kf7 55.Kh8 Kf6 56.h7 Kf7 57.Rc7 Kf6 58.Rc6 Ke7 59.Ra6 Kf7 60.Ra7 Kf6 61.Ra8 Kf7 62.Rc8 Ra2 63.Rc7 Kg6 64.Rg7 Kh6 65.Rg8 Ra7 66.Rg4 Rh7 67.Kg8 Rc7 68.Rg2 Kh5 69.Kf8 Rd7 70.Rc2 Kg6 71.Rc6 Kf5 72.Rc5 Ke6 73.Rh5 Rf7 74.Ke8 Re7 75.Kf8 Rd7 76.Rh6 Ke5 77.Rh5 Kd6 78.Rh6 Kd5 79.Rh5 Kc6 80.Rh6 Kc5 81.Rh5 Kd4 82.Rh4 Ke3 83.Ke8 Rg7 84.Rh3 Ke4 1–0. Comet B25 – EXchess 3.11, 2004.

9.Ne5 a6 +=.

9.Ne5 Nd7 10.d3 Nd6 11.Na3 Nf5 12.Qc1 Ne5 13.Be5 Be5 14.fe5 Qe7 15.d4 Qg5 16.c4 Qe3 17.Qe3 Ne3 18.cd5 ed5 19.Rc1 Nf5 20.Nc2 f6 21.ef6 Rf6 22.0–0 Bd7 23.Bg4 Raf8 24.Bf5 Bb5 25.Ne3=+ Bf1 26.Rf1 c6 27.Kg2 R8f7 28.Bd3 Rf1 29.Bf1 Re7 30.Kf3 Re4 31.Nc2 g5 32.Bd3 g4 33.Kf2 Re6 34.Ne3 Rf6 35.Ke2 h5 36.Bf5 Kf7 37.Bc8 b5 38.Nf5 a5–/+ 39.Bd7 a4 40.Kd2 a3 41.Kc3= Kf8 42.Kb4 Rf7 43.Bc8 Ra7 44.Kc5 Rc7 45.Be6 Ke8 46.Kd6 Kd8 47.Kc5 b4 48.Kb4+/– Ra7 49.Kb3 Ke8 50.Kb4 Ra8?? 51.Kc5+– Ra6 52.Bc8 Ra8 53.Bb7 Rb8 54.Kc6 Kf7 55.Kd5 Rd8 56.Kc5 Kf6 57.Nd6 Ke7 58.Nc4 Rd7 59.Bc6 Rc7 60.d5 Kf6 61.d6 Rf7 62.Be4 Ra7 63.Kb6 Ra4 64.Bd5 Rb4 65.Kc7 Rb5 66.Bc6 Rg5 67.d7 Rg7 68.Kc8 Rg8 69.d8Q Rd8 1–0. Crafty 19.01 – EXchess 3.11, 2004.

9.Ne5 Nd7 10.Bd4 Ne5 11.fe5 Be7 12.0–0 Bd7 13.d3 Ng5 14.h4 Bb5 15.a4 Bd7 16.hg5 c5 17.Bc3 Bg5 18.Rf3 Qe8 19.a5 Bc6 20.d4 Rc8 21.Qd3 c4 22.Qd2 Qd7 23.Bb4 Rfe8 24.Bc5 Ra8 25.Rf2 Be7 26.Be7 Re7 27.e4 de4 28.Bc4 Rd8 29.c3 Bd5 30.Be2 Rc8 31.Qg5 Ree8 32.Rh2 Rc7 33.Rh4 Kh8 34.a6 b5 35.Ra5 Rb8 36.Rb5!! Rbc8 37.Rb4 Qc6 38.Qh5 h6 39.c4 Qd7 40.cd5 Rc1 41.Kg2 ed5 42.Rb7 R8c7 43.Rb8 Kh7 44.Na3 Re1 45.Bg4 Qc6 46.Bf5 Qg6 47.Bg6 fg6 1–0. Fritz 6 – EXchess 3.11, 2004.

9.Bf6 gf6 10.d3 Nd6 11.c4 +=.

9.Bf6 Qf6 10.c3 a6 11.Qa4 Nd7 12.ba6 Nec5 13.Qd4 b6 14.Ne5 Ba6 15.Ba6 Ra6 16.Nd7 Nd7 17.Qf6 Nf6 18.Ke2 Rfa8 19.a3 c5 20.d4 Ne4 21.Kf3 b5 22.Rd1 Ra4 23.g4 Kf8 24.h4 R4a5 25.dc5 Nc5 26.Ra2 Ne4 27.f5 Nf6 28.Rb2 R8a7 29.Kf4 Ra4 30.Rd4 ef5 31.gf5 R7a5 32.Ra4 Ra4 33.Rb4 Ke7 34.Ra4 ba4 35.Nd2 h5 36.c4 dc4 37.Nc4 Nd5 38.Ke4 Nc3 39.Kd4 Ne2 40.Ke5 Ng1 41.Nd2 Nh3 42.e4 Nf2 43.Nc4 Nd1 44.Kd4 Kf6 45.Nb6+– Ke7 46.Na4 Nf2 47.Nc3 Ng4 48.Nd5 Kd6 49.Nf4 Ne5 50.Nh5 Nc6 51.Kd3 Ne5 52.Ke3 g6 53.fg6 Ng6 54.Ng3 Nh4 55.Nf5 Nf5 56.ef5 Ke5 57.a4 f6 58.a5 Kf5?? 59.a6 Ke5 60.a7 f5 61.a8Q f4 62.Kf3 Kf5 (62...Kd6 63.Qf8 Ke6 64.Kf4+–) 1–0. Doctor? 3.0 – EXchess 3.11, 2004.

9.Bf6 Qf6 10.Ne5 Nd7 11.d3? Ne5–+ 12.c3 Nc3 13.Nc3 Ng4 14.Bg4 Qc3 15.Kf1 Qc5 16.Rc1 Qe3 17.Rc7 Qb6 18.Qc2 Qb5 19.Kg2 Qb6 20.Rc1–/+ f5 21.Bh5 Qe3?? 22.Rc8=+ Rac8 23.Qc8 e5?? 24.fe5?? Qd2 25.Kh1 Qd3 26.Qe6 Kh8 27.Rd1 Qe4+/– 28.Kg1 Qe3 29.Kg2+– d4 30.Qd6 Rc8 31.Qd4 Qd4 32.Rd4 Rc2 33.Kf3 h6? 34.Bg6 Rc3 35.Kf4 Rc4 36.Rc4 b5 37.Rc8 1–0. Fritz 5.32 – EXchess 3.11, 2004.

5.Be2 a6

6.Na3 Ba3 7.Ba3 ab5 8.Bb2 b4 9.Nf3 Qe7 10.0–0 Nbd7 11.Nd4 0–0 12.a3 +=.

6.Na3 c6 7.ba6 b6 8.Nb1 Ba6 9.d3 0–0 10.Nf3 Nbd7 11.0–0 Qc7 12.Nbd2 +=.

6.ba6 b6 7.Nf3 0–0 8.0–0 Nbd7 9.a7 Ra7 10.Nd4 Bb7 11.f4 Ne4 12.a3 +=.

6.Nc3 0–0 7.ba6 Na6 8.Nf3 Ne4 9.0–0 Bb4 10.Nb5 Bd7 11.a3 Be7 12.Ne5 =.

6.Nc3 ab5 7.Nb5 c6 8.Nc3 b5 9.a4 b4 10.Nb1 Ba6 11.d3 0–0 12.Nf3 +=.

6.Nf3 0–0 7.ba6 b6 8.0–0 Ba6 9.d3 Nbd7 10.Nbd2 Bb7 11.c4 dc4 12.Nc4 +=.

6.Nf3 ab5 7.Bb5 c6 8.Be2 0–0 9.0–0 b5 10.d3 Qa5 11.Nbd2 Nbd7 12.Re1 +=.

6.a4 0–0

7.Nf3 ab5 8.ab5 Ra1 9.Ba1 =.

7.Nf3 c5 8.0–0 Nbd7 9.c4 ab5 10.ab5 Ra1 11.Ba1 dc4 12.Bc4 =.

6.a4 ab5!?

7.ab5 Ra1 8.Ba1 0–0 9.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0–0 9.Be2).

7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.Bb5 Bd7 11.Nc3 (11.Be2 Nc6 12.0–0=) 11...Nc6 (11...0–0 12.Be2=) 12.0–0 0–0 13.Be2 Qa5 14.Qb1 1–0. pcmvr – acidtest, net–chess.com, 2014.

7.ab5 Ra1 8.Ba1 Qd6 9.f4 Nbd7 10.Nf3 0–0 11.0–0 Ne4 12.d3 =.

6.a4 Ne4

7.ba6+= Na6

8.Nf3 0–0 =+.

8.Bg7 Rg8–/+ 9.Bb5 c6 10.Ba6 Ra6 –/+.

8.Bg7 Rg8–/+ 9.Be5!? Rg2 10.Nh3 –/+.

6.ba6 Na6

7.Nf3 0–0

8.0–0 Nc5 9.d3 Bd7 10.Nbd2 b5 11.Bd4 Na4 12.c4 +=.

8.0–0 Bd6 =+.

8.d4 Bb4 9.Nbd2 –/+.

5.Nf3 0–0

6.a4 c6 7.c4 (--> 5.Nf3 c6 6.a4 0–0 7.c4).

6.a4 Bd7 7.Be2 c6 (7...Bd6 8.c4=) 8.0–0+= cb5 9.ab5 Qb6 (9...Be8 10.c4+=) 10.Na3 (10.Bd4 Bc5 11.Bf6 gf6+/–) 10...Rc8 11.Nd4 (11.Bd3 Ne4+=) 11...e5 12.Nf3 d4?? (better is 12...e4 13.Ne5 Ba3 14.Ra3 Bb5 15.Bb5 Qb5=) 13.ed4 (13.Nc4 Rc4 14.Bc4 Bb5 15.Ne5 de3 16.fe3 Bc4 17.Nc4 Qc7+–) 13...ed4 (13...e4 14.Ne5 Be6 15.c4+–) 14.Bd4 Ba3?? (better is 14...Qd8+–) 15.Bb6 (15.Ra3?! Qd6 16.Qa1 Rc2 17.Ra7 Ra7 18.Qa7 Rc8+–) 15...Bb2 (15...ab6 16.Ne5 Be6+–) 16.Rb1 ab6 17.Rb2 Bg4 18.c4 Nbd7 19.Qc2 Nc5 20.d4 Nce4 21.h3 Bh5 22.g4 Bg6 23.Nh4 Ng3 24.Ng6 Nf1 25.Bf1 hg6 26.Ra2 Ra2 27.Qa2 Kh7 28.f3 Rd8 29.d5 Nd7 30.g5 f6 31.h4 Ne5 32.gf6 gf6 33.Bg2 Kh6 34.Qd2 Kg7 35.Qf4 Nf7 36.Qc7 Re8 37.Qb7 Re1 38.Kh2 Rc1 39.Qc7 Kf8 40.d6 Ke8 41.Qe7 1–0. ATUK – BigK, Live Game Caissa's Web, 2005.

6.Nc3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 Nbd7 10.Be2 e5 11.0–0 e4 12.Ne1 Nb6 13.d3 Bf5 14.f3 ed3 15.Bd3 Bd3 16.Nd3 Nc4 17.Nd1 Qd7 18.Qa4 Re8 19.Bd4 Qe6 20.Qa7 Qc8 21.Nc3 c6 22.Ra1 cb5 23.Nb5 Qc6 24.Qa4 Rc8 25.Ra2 Qe6 26.Nf4 Qf5 27.Qb3 Nd2 28.Qd3+/– Qd3 29.cd3 Nb3 30.Bf6 Bf6 31.Nd5 Rc1 32.Kf2 Bh4? 33.g3 Bd8 34.d4 Rc6?? 35.Nb4 Rc8 36.Nd6 Rb8 37.Nd5 Na5 38.h4 Kf8 39.Rc2 b6 40.Ke2 g6 41.Rc3 b5 42.Kd3 b4 43.Rc2 b3 44.Rb2 Nc6 45.e4 Ba5 46.Nf6 Ke7 47.e5 Be1 48.Nfe4 h6 49.f4 Na5 50.d5 h5 51.f5 Bb4 52.f6 Kf8 53.e6 fe6 54.de6 Nc6 55.Nc4 Rd8 56.Ke3 Nd4 57.Ne5 Ne6 58.Ng6 Ke8 59.Rb3 Nd4 60.Rb1 Kf7 61.Nf4 Nc2 62.Kf3 Rh8 63.Ng5 Kf6 64.Nd5 Kg6 65.Nb4 Rf8 66.Ke4 Rb8 67.Nc2 Rb1 68.Ne6 Rg1 69.Nf4 Kh7 70.Kf3 Rf1 71.Ke2 Rg1 72.Kf2 Rc1 73.Nd4 Rc4 74.Nf5 Rc5 75.Nd6 Re5 76.Kf3 Kg7 77.Nc4 Rb5 78.Nd2 Kf6 79.Ke4 Rf5 80.Nf1 Ra5 81.Ne3 Ra4 82.Kd5 Ra5 83.Kd4 Ra4 84.Nc4 Kf5 85.Nh5 Kg4 86.Nf6 Kg3 87.h5 Ra1 88.Ne5 Rh1 89.Ne4 Kf4 90.Nd3 Kg4 91.Nf6 Kf5 92.Nd5 Rh5 93.Ne3 Ke6 94.Kc4 Rc5 95.Kb4 Rc3 96.Nc5 Rc5 97.Kc5 Ke5 98.Nc4 Ke4 99.Na5 Kd3 100.Nc4 Kc2 101.Na5 Kb1 102.Nc4 Ka1 103.Na5 Kb1 ½–½. GnuChessMac 4.0 – Crafty 11.13, 2000.

6.Nc3 c5 =.

6.Nc3 c6 7.a4 a6 8.ba6 (8.Be2 Nbd7+=) 8...Na6+= 9.Bd3 (9.Be2 Bd6+=) 9...Qc7 (9...Nc5 10.Be2+=) 10.0–0 e5 11.Be2 e4 (11...Re8 12.Ba3+=) 12.Nd4 Bd6 (12...b6 13.Ncb5 Qd7 14.Nc3+=) 13.g3 (13.f4 Nc5+=) 13...Bh3 (13...Nc5 14.Kg2–/+) 14.Re1 Nc5 15.Nb3 Ne6 (15...b6 16.Nc5 Bc5 17.f3–/+) 16.Nb1 (16.a5 Bb4–/+) 16...Qe7 (16...Nd7 17.Nc3–/+) 17.Bf6 (17.a5 c5+=) 17...Qf6–/+ (17...gf6?! 18.a5+=) 18.Bg4 (18.d4 b6–/+) 18...Ng5 (better is 18...Bg4 19.Qg4 Ng5–+) 19.Nd4?? (better is 19.Bh3 Nh3 20.Kg2–/+) 19...c5–+ 20.Bh3 Nh3 (20...cd4!? 21.ed4 Nh3 22.Kg2–+) 21.Kg2 cd4 22.Kh3 de3 23.c3 ef2 24.Rf1 Bc5 25.Na3 Ra6 26.Nb5 Qf5 27.Kg2 Rh6 28.g4 Qf4 29.h3 f5 30.Nd4 fg4 31.Qe2 Rh3 (31...Rh3 32.Rf2 Qg3 33.Kf1 Rh1#) 0–1. Zylla,Johannes – Ahlers, Betriebssport, 1987.

6.Nc3 Nbd7 7.Be2 c5 8.bc6 bc6 9.0–0 c5 10.Rb1 a5 (10...Rb8!?=) 11.Nb5+= Ba6 12.c4 dc4 13.Bc4 Bb5 (13...Rb8 14.a4+=) 14.Bb5+– Nb6 (14...Qc7 15.Qa4+–) 15.Ne5+– Bd6 16.Nc6 Qc7 17.f4 Nbd5 18.Rf3 Nb4 (18...Ne4 19.Qc2 f5 20.d3+–) 19.Rg3+– Nd3?? (better 19...Nbd5+–) 20.Rg7!! (20.Rg7 Kh8 21.Bf6 Be5 22.Qh5 Bf6 23.Qh7) 1–0. Karl – Thdtr, internet private, 2018.

6.c4 c5 (no 7.bc6) (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0–0).

6.c4 Nfd7 7.cd5 ed5 8.d4 f5 9.Bd3 a6 10.0–0 ab5 11.Bb5 c6 12.Bd3 Nf6 13.Nc3 Ne4 14.Qb3 Kh8 15.Rfc1 g5 16.Bc2 g4 17.Ne4 gf3 18.Ng3 fg2 19.f4 Bh4 20.Kg2 Bg3 21.hg3 Qe7 22.Rab1 Qe6 23.Rh1 Re8 24.Rbe1 Nd7 25.e4 fe4 26.Re4 de4 27.d5 Qf6 28.dc6 Qb2 29.Qb2 Ne5 30.cb7 Bb7 31.Qb7 Ra2 32.Qh7# 1–0. guest545 – guest1370, ICC, 2002.

6.c4 h6 7.cd5 Nd5 8.Be2 (8.d4 a6=) 8...Bf6 (8...a6 9.Qa4=) 9.d4 Bd7 (9...a6 10.0–0=) 10.a4 (10.Ba3 Re8=) 10...c6 (10...a6 11.Ba3 ab5 12.ab5=) 11.Nbd2 (11.0–0 cb5 12.ab5 Be7+=) 11...cb5 (11...a6 12.ba6 Na6 13.Ba3=) 12.ab5 b6 (12...Be7!?=) 13.0–0+– Qe8 (13...Be7 14.Qb3+–) 14.Qb3 Be7 15.e4 (15.Ba3!?+–) 15...Nc7+= The isolani on b5 becomes a target 16.d5 (16.Rfc1 Bb5 17.Rc7 Be2 18.Raa7 Ra7 19.Ra7 Nc6+=) 16...ed5= 17.ed5 Bb5 (17...Nb5 18.Bb5 Bb5 19.Rfe1+–) 18.Bb5 (18.Qc3 f6 19.Qc7 Be2 20.Rfe1+=) 18...Nb5 (better 18...Qb5!? 19.Qc3 Ne8=+) 19.Rfe1 (19.Nc4 a6 20.Nb6 Ra7+=) 19...Nd6 20.Qc3 f6 21.Re6 (21.Qc7 Nd7+=) 21...Qf7 (21...Qd7 22.Qe3 Nc8 23.Bd4=) 22.Rae1 (better 22.Qc7 Re8 23.Rd6 Bd6 24.Qd6+–) 22...Nf5? (better 22...Nc8=) 23.Qd3 (23.g4 Qg6 24.Qc4 Bc5+–) 23...Qg6 (23...g6 24.d6 Rd8+–) 24.h3?? (better 24.d6 Nh4 25.Qg6 (25.de7?? Qg2) 25...Ng6 26.de7+– (26.Re7?! Ne7 27.de7 Re8+–)) 24…Bc5+=. GuestHQFG – GuestNWTP, freechess.org, 2016.

6.Bd3 a6 7.Nc3 =+.

6.Bd3 c5 7.0–0 Nbd7 8.Re1 c4=+ 9.Be2 Bd6 10.Ng5 h6 11.Nh3 Qc7 12.g3 Be5 13.Be5 Qe5 14.Nc3 Qd6 15.d4 Nb6 16.Bh5?? Bd7 17.Qf3?? Qb4 18.Ne2 Qb5 19.Rab1 Qc6 20.g4 Ne4 21.Qf4 Qd6 22.Qd6 Nd6 23.g5 hg5 24.Ng5 f6 25.Nf3 Be8 26.Be8 Rfe8 27.Kh1 Ne4 28.Rf1 Kf7 29.a4 Rab8 30.a5 Nd7 31.Nf4?? Rh8 32.h3? g5 33.Rb2 gf4 34.ef4 Rh3 35.Kg2 Rhh8 36.Ng1 Rbg8 37.Kf3 Nd2 38.Ke2 Nf1 39.Kf1 Rh1 40.Ke2 Rgg1 41.Rb7 Ke7 42.Ra7 Ra1 43.a6 Rh3 44.f3 Rh2 45.Ke3 Re1 0–1. Kurnatowski,Vitali – Geilfuss,Albert, GER–ch U10 Willingen, 2001.

6.d4 Bb4 7.Nbd2 Bd7 8.a4 Re8 9.c3 Bd6 10.Bd3 h6 11.0–0 c6 12.c4 cb5 13.c5 Bc7 14.ab5 Ba5 15.Nb3 Bc7 16.b6 Bb6 17.cb6 Qb6 18.Ne5 Nc6 19.Nd7 Nd7 20.Qc2 Nb4 21.Qc3 Nd3 22.Qd3 Reb8 23.Rfc1 a6 24.Rc3 a5 25.Rb1 Nf6 26.Nc5 Qd8 27.Ba3 b6 28.Nb3 b5+= 29.Rc2 b4 30.Bb2 a4 31.Nc5 b3 32.Rc3 a3 33.Ba3 Ra3 34.Rcb3 Rbb3 35.Nb3 Qe8 36.h3 Qc6 37.f4 Qc4 38.Qc4 dc4 39.Nd2 c3 40.Nf1 g5 41.Rc1 gf4 42.ef4 Ra4 43.Rc3= Rd4 44.g3 Nd5 ½–½. Bonetti,Shane – MacChess 5.0, 2000.

6.d4 Bd7 7.c4 Bb4 8.Nbd2 dc4 9.Bc4 Re8 10.0–0 c5 11.a3 Ba5 12.Nb3 cd4 13.Nfd4 Bb5 14.Bb5 Nc6 15.Nc6 bc6 16.Bc6 Rb8 17.Be8 Qe8 18.Bf6 Qb5 19.Na5 Qa5 20.Qc1 gf6 21.Rd1 Qe5 22.Rd4 h5 23.Rc4 a5 24.Rc8 Rc8 25.Qc8 Kg7 26.Rc1 f5 27.Qc5 Qb2 28.Qc3 Qc3 29.Rc3 Kf6 30.Rc5 a4 31.Ra5 h4 32.Ra4 Kg5 33.Rb4 e5 34.a4 e4 35.a5 Kf6 36.a6 Ke5 37.a7 f4 38.ef4 Kf4 39.a8Q f5 40.f3 Kg5 41.Qg8 Kf6 42.fe4 fe4 43.Re4 Kf5 44.Qe6 Kg5 45.h3 Kh5 46.Qg8 Kh6 47.Rh4# 1–0. NN – MacChess 5.0, 2000.

6.Be2 a5 7.0–0 c5 8.bc6 (8.c4 Qb6=) 8...bc6 9.c4 Ba6 10.d4 Nbd7 11.Ba3 Nb6 (11...Bc4 12.Bc4 dc4 13.Be7 Qe7 14.Qc1=) 12.Ne5 Rc8 (12...Nc4 13.Nc6 Na3 14.Nd8 Rfd8 15.Ba6 Ra6 16.Na3 Ba3 17.Qd3+–) 13.Be7 Qe7 14.c5 Be2 15.Qe2 Nbd7 16.Nd7 Qd7 17.Nc3 Qc7 18.f4 Nd7 19.e4 (19.Rab1 Rb8=) 19...de4 (19...Rb8 20.f5=) 20.Ne4+= Nf6 (20...Rb8!?+=) 21.Nf6+/– gf6 22.Rad1 (22.Qg4 Kh8+/–) 22...f5 23.Rd3 Qe7 (23...Rb8 24.Qe3+=) 24.Qe5 Threatening mate... how? 24...f6 25.Qe1 Ra8 26.Qc3 Rfd8 27.Re1 Rd5 28.Rg3 (28.Rde3 Kf7+/–) 28...Kf7 29.Qf3 Rg8 (better is 29...Kf8+/–) 30.Qh5+– Kf8 31.Qh6 Rg7 32.Rge3 (32.Re6 Qb7+–) 32...e5 33.fe5 fe5 34.Re5 Re5 35.Re5 (35.de5?! Qc5 36.Kh1 Qd5+=) 35...Qd7 (35...Qg5 36.Qd6 Re7 37.Kf1+– (37.Qc6?! Re5 38.de5 Qe3 39.Kf1 Qf4 40.Ke2 Qe5 41.Kf3 Ke7+–)) 36.Qf6 Kg8 37.Rf5 Threatening mate: Qf8 37...h6 38.h3 Kh7 39.Rf4 Qd5 The mate threat is Qxg2 40.Qf5 Qf5 41.Rf5 Rd7 42.Rf4 Kg6 43.Kf2 Rb7 44.Ke3 a4 45.d5 cd5 46.Ra4 Rb2 47.Kd4 Kf6 48.Kd5 Rg2 49.Rf4 Ke7 50.a4 Kd8 51.Kc6 Rg6 52.Kb7 Rg7 53.Kb6 Kc8 54.c6 Rg8 55.Rf7 h5 56.Ra7 1–0. Vokac,Marek (2450) – Polak,Tomas (2410), Plzen Mephisto GP, 1992.

6.Ne5 Nbd7 7.f4 (7.Qf3 Bd6 8.Nd7 Nd7+=) 7...Ne5 (7...Ne4 8.Nc3+=) 8.Be5 (8.fe5 Ne4+=) 8...Nd7 9.Bb2 Nb6 (9...a6 10.ba6 b6 11.Bb5+=) 10.Bd3 (10.Qh5 a6=) 10...f5 (10...Na4 11.Be5+=) 11.Na3 (11.0–0!?=) 11...Na4+= 12.Rb1?? (better is 12.Bc1+=) 12...Nb2–+ 13.Rb2 Ba3 14.Rb3 Be7 (14...Qh4 15.g3 Qe7 16.0–0–+) 15.Qh5 (15.0–0 b6–+) 15...Rf6 (15...a6 16.ba6 b6 17.0–0–+) 16.Qf3 (16.0–0 a6 17.ba6 b6–+) 16...c5 17.c4 (17.bc6 bc6 18.c3 Qa5–+) 17...b6 18.Kf2 (18.0–0 Bb7 19.Qe2 Rg6–+) 18...Bb7 19.Qe2 Rg6 20.Rg1 Qd6 21.g4 Rh6 22.Ke1 dc4 23.Bc4 Bd5 24.gf5 Bc4 25.Qc4 Qd5 26.Qd5 ed5 27.Rh1 Rf6 28.Ke2 Rf5 29.Rbb1 Bf6 30.h4 Re8 31.h5 Rf4 32.Rbg1 Rh4 33.Rg7 Kg7 (33...Kg7 34.Rh4 Bh4–+) 0–1. Trokenheim,Marek – Hansson,Lennart, Stockholm SWE, 1982.

6.Ne5 Ne4 7.Qh5 +=.

6.Bf6 Bf6 7.d4 b6 8.c4 c5 9.bc6 Nc6 10.cd5 Qd5 11.Nbd2 Qh5 12.Be2 Bb7 13.0–0 Rac8 14.Ne5 Qh4 15.g3 Qh3 16.Nc6 Bc6 17.Bf3 Bb5 18.Re1 Qf5 19.Bb7 Rce8 20.Ne4 Be7 21.a4 Bd7 22.Nd2 Bb4 23.Be4 Qh3 24.Qe2 Bc3 25.Ra2 a5 26.Rd1 f5 27.Bg2 Qh6 28.Nc4 Rb8 29.Rd3 Bb4 30.Ne5 Be8 31.d5 Rd8 32.f4 Bh5 33.Qf2 ed5 34.Bd5 Kh8 35.Rc2 Rfe8? 36.Rc6+/– Rd6 37.Rd6 Bd6 38.Bf7 Bc7?? 39.Be8+– Be8 40.Qc2 Qe6 41.Qc7 Qa2 42.Qd8 Qa1 43.Kg2 Qa2 44.Kh3 Qe6 45.Rd6 Qg8 46.Qe7 h6 47.Rd8 Ba4 48.Rg8 Kg8 49.Qe6 Kh7 50.Qb6 Bc2 51.Qa5 Be4 52.Qa6 Kg8 53.Qg6 Bb1 54.Nd7 Kh8 55.Nf8 Kg8 56.Ne6 Bd3 57.Qg7# 1–0. Skaki – Monik, computer chess game, 2000.

6.a4 a6

7.c4 ab5 8.cb5=+ c5 9.Be2 Nbd7 10.d3 Qc7 11.Nbd2 b6 12.0–0 Bb7 13.Ra2 e5 14.Nh4 (14.a5 ba5 15.Qc2 Bd6=+) 14...Rfe8 15.Nf5 Bf8 16.g4 (16.h4 g6 17.Ng3 h5=+) 16...h6 17.Ng3 Rad8 (17...g6 18.Qb3–/+) 18.Qa1 (18.Qc2 c4=+) 18...e4 (18...Bd6 19.a5 ba5 20.Nf5=+) 19.d4 (19.de4!? Bd6 20.a5 ba5 21.Bc3=) 19...c4–/+ 20.Bc3 Bd6 21.Kg2 g6 22.Rh1 Bc8 (22...Ra8 23.h4–/+) 23.a5 (23.Qb2 Kg7=+) 23...ba5–/+ 24.Ba5 Nb6 25.h3 Qb8 (25...Bd7 26.Qc3–/+) 26.Nb1 Bc7 (26...Qb7 27.Nc3=+) 27.Nc3= Nh7 28.Qb2 (28.Qd1 Be6=) 28...Kh8 (28...Ng5!?=+) 29.h4= f5 (29...Kg7 30.Na4=) 30.Bb6 (30.h5 Rg8 31.Bb6 Qb6+=) 30...Bb6+= 31.Nd5 (31.h5!? f4 32.hg6 f3 33.Kf1 fe2 34.Nce2= (< 34.Nge2 Nf8=+)) 31...Rd5= 32.Bc4 Rdd8 (32...Rd6 33.Bf7 Rf8 34.d5 Nf6 35.Bg6 fg4 36.Ne4=+) 33.gf5 (33.h5!? g5 34.Nf5+=) 33...gf5= 34.Rg1? (34.Bf7!? Re7 35.Ra8=) 34...Qd6 (34...Nf6 35.Kh1–/+) 35.Kf1 (better is 35.Nh5 Nf6 36.Nf4–/+) 35...Be6?? (better is 35...Nf6 36.Ne2 Ng4–/+) 36.d5 Kg8 (36...Bd4 37.Qd4 Nf6 38.Qf6 Kh7 39.Nf5 Qg3 40.Rg3 Bf5 41.Qg7) 37.Nf5 (37...Qg3 38.Rg3 Ng5 39.Qg7) 1–0. Blumenberg,Walter – Schlamp,Frank, Porz op, 1989.

7.c4 dc4 8.Nc3= ab5 9.Nb5 (9.ab5!? Ra1 10.Qa1=) 9...c6=+ 10.Nc3 Nd5 (10...Qb6 11.Qc1=+) 11.Bc4= Nc3 (11...Nd7 12.0–0=) 12.Bc3+= Bf6 (12...Nd7 13.a5+=) 13.d4 Nd7 (13...c5 14.Qc2+=) 14.Qb3 (14.a5 Qc7+=) 14...Nb6+= 15.0–0 Nc4 16.Qc4 Qd5 17.Nd2 Qc4 (17...Rd8 18.Rfd1=) 18.Nc4+= Bd8 (18...Rd8!?+=) 19.Bb4+/– b5?? (better is 19...Re8+/–) 20.ab5+– Ra1 21.Ra1 cb5 22.Bf8 (22...Kf8 23.Ra8+–) 1–0. Zylla,Johannes – Maesch, BS–Senioren–MK, 1992.

7.c4 dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 b6 11.0–0 Bb7 12.d4 Nbd7 (12...c5 13.bc6 Nc6 14.Qe2=) 13.Nbd2 Re8 (13...Ne4 14.Bb2=) 14.Qb3 (14.Qc2 Qc8+=) 14...Bd5 (14...Bd6 15.Bb2=) 15.Rc1 (15.Bc3 Qa8+=) 15...Bd6 (15...Qa8 16.Bd5 ed5 17.Bb2+=) 16.Bb2 (16.Qc2 e5+=) 16...Nf8 (16...Qa8 17.Ra1 Qb7 18.Bd5 ed5 19.Qa4+=) 17.Ba3 (17.Qc2 Bc4 18.Nc4 Qa8+–) 17...Ng6+= 18.Bd5 Ba3 19.Qa3 Qd5 (19...ed5 20.Qc3 Re7 21.Ra1+=) 20.Qb3 (20.Rc7!? Qb5 21.h3+=) 20...Qb3= 21.Nb3 Rc8 22.Kf1 (22.Nbd2 Ne8=) 22...Ne4 (22...Ne8 23.Nbd2=) 23.Nbd2 Nd6 24.Nc4 Nc4 (24...Ne7 25.Nd6 cd6 26.Ra1=) 25.Rc4+= f6 (25...Ne7 26.Rc2+=) 26.Nd2 (26.Ke2 Ne7+=) 26...Kf7 (26...Kf8 27.Rc2+=) 27.Rc2 (27.Ke2 Ne7+=) 27...Ne7 (27...e5 28.d5+=) 28.g3 (28.Ke2 e5+=) 28...c6 (28...Nf5 29.Ne4=) 29.Nc4 (29.bc6 Ke8+=) 29...Kg8 (29...Kg6 30.Nb6 Rb8 31.Nd7 Rb5 32.Ke2+=) 30.Nd6 Rc7 (30...Rd8 31.Nb7 Rc8 32.Ra2+=) 31.Ra2 h6 32.Ra8 Kh7 33.Rb8 cb5 (33...Rd7 34.Ne4 Nd5 35.bc6+=) 34.Rb6+– Rc6 (34...Nc8 35.Nc8 Rc8 36.Rb5+–) 35.Rc6 Nc6 36.Nb5 Kg6 37.Ke2 Nb4 (37...Kf7 38.Kd3+–) 38.Kd2 Kf5 (38...Kf7 39.e4+–) 39.f3 (39.Nc7+–) 39...e5 (39...Kg6 40.e4+–) 40.e4 (40.d5!? e4 41.Nd4 Ke5 42.fe4 Na6+–) 40...Ke6 41.d5 Kd7 42.Kc3 (42.Na3 h5+–) 42...Na6 (42...Na2 43.Kd3+–) 43.Kc4 g6 (43...h5 44.Na3+–) 44.Nc3 (44.h4 Ke7+–) 44...Kd6 (44...Nc7 45.g4+–) 45.g4 (better 45.h4+–) 45...Nc7?? (better 45...Kd7+–) 46.Nb5 Nb5 47.Kb5 1–0. Mehlhorn,Uwe (2145) – Freier,Joachim (1835), 22. Friedrichrodaer–Open, 2018.

6.a4 c5

7.c4 a6 8.Qc2 Nbd7 9.Be2 dc4 10.Bc4 ab5 11.Bb5 b6 12.0–0 h6 (12...Bb7 13.Ng5 Ba6 14.Na3=) 13.d4 Bb7 14.Nbd2 Nd5 (14...Rc8 15.dc5 Bc5 16.Rfd1=) 15.Rfd1 Rc8 16.Qd3 (16.Nc4 f5+=) 16...Nb4 (16...f5 17.Rac1+=) 17.Qe2 Bf6 (17...cd4 18.Nd4 Nf6 19.Nc4+=) 18.Nc4+/– White prepares the advance a5 18...Bc6 19.dc5 bc5 (19...Bb5 20.ab5 Rc5 21.Nfe5 Be5 22.Ne5 Ne5 23.Rd8 Rd8 24.Be5 Re5 25.Qc4+–) 20.Bf6 (20.Nfe5!? Bb5 21.ab5 Be5 22.Ne5+– (22.Be5?! Nd5+/–)) 20...Qf6+= 21.Bc6 Rc6 22.a5 Rd8 23.Rab1 (23.Qd2 Rcc8+=) 23...Nd5 24.Qb2 (24.Qc2 Rc7 25.e4 Nb4+=) 24...Nc3= 25.Qb7 Nd1 (25...Nb1 26.Qc6 Ne5 27.Rd8 Qd8 28.Qd6 Qd6 29.Nd6 Nf3 30.gf3+/–) 26.Qc6+= Nc3 27.Rf1 Qe7 28.a6 Nb8 29.Qb6 Nd5 30.Qa5 (30.Qb7 Qb7 31.ab7 Nc3+=) 30...Nc6= 31.Qb5 Qc7 (31...Ndb4 32.Ra1=) 32.Qc5 (32.Ra1 Ra8+=) 32...Ra8 (32...Ne5 33.Qc7 Nf3 34.gf3 Nc7 35.a7+–) 33.Ra1 (33.Qb5 Ncb4 34.Nfe5 Na6+=) 33...Ncb4 (33...Ne5 34.Qc7 Nf3 35.gf3 Nc7 36.a7+–) 34.Qc7+= Nc7 35.a7 Nba6 (35...Nb5 36.Kf1 Ra7 37.Rb1=) 36.Nd4 Ra7 37.Nd6 Ra8 38.e4 Re8?? (38...Nb4 39.Ra8 Na8 40.Kf1+=) 39.N4b5 (better is 39.Ne8 Ne8 40.Ra6+–) 39...Nb5? (better is 39...Rd8+=) 40.Nb5?? (better is 40.Ne8 Nac7 41.Nc7 Nc7 42.f4+–) 40...Nc5= ½–½. Jernselius,Kjell (1855) – Patola,Eero (1935), Gibraltar, Open, 2012.

7.c4 a6 8.Nc3 Nbd7 9.Be2 Nb6 10.d3 a5 11.Qb3 Qc7 12.e4 d4 13.Nb1 e5 14.Nbd2 Nh5 15.h3 g6 16.0–0–0 Nf4 17.Bf1 f5 18.g3 Nh5 19.Bg2 Bd6 20.Kb1 Bd7 21.Ka2 Rae8 22.Ka3 Nf6 23.Ng1 Be6 24.f3 fe4 25.fe4 Nh5 26.g4 Ng3 27.Rh2 Rf2 28.Ngf3 Rf8 29.Ng5 Bc8 30.Ngf3 Qe7 31.Re1 Kg7 32.Qd1 h5 33.g5 h4 34.Bc1 Rh8 35.Nf1 Be6 36.N1d2 Qf7 37.Bf1 Rh2 38.Nh2 Qd7 39.Qf3 Be7 40.Nb3 Rf8 41.Qd1 Nf1 42.Rf1 Bc4 (42...Bh3?! 43.Rf8 Bf8 44.Qe1+=) 43.dc4 Nc4 44.Ka2 Qh3 45.Nf3 Qg2 46.Nbd2?? (better is 46.Kb1–/+) 46...Ne3–+ 47.Rg1 Qf2 48.Qe1 Rf3 49.Qf2 Rf2 50.Kb3 h3 51.Nc4 h2 52.Rh1 Rf1 53.Rh2 Nc4 54.Kc4 (54.Bf4 Rf4 55.Kc4 Re4–+) 54...Rc1 55.Kd5 Bg5 56.Ke5 d3 0–1. Palmi,Herbert (2015) – Krstic,Petar (2255), Niederbayernliga, 2009. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c5 5.e3 Be7 6.c4 0–0 7.a4 a6)

7.c4 Nbd7 8.a5 Re8 9.Qc2 Bd6 10.cd5 ed5 11.Bd3 c4 12.Be2 Nc5 13.Bc3 Nfe4 14.Qb2 Bf8 15.h4 Bg4 16.Bd4 Nb3 17.Ra4 Nd4 18.Nd4 Be2 19.Ne2 Nc5 20.Ra3 Nd3 21.Rd3 cd3 22.Nf4 d4 23.Na3? (23.0–0–+) 23...de3 24.fe3 Qd6 (24...Qd6 25.Rf1 Qa3 26.Qa3 Ba3 27.Nd3 Re4–+) 0–1. Jaskulski,Klaus – Niehaus,Frank (2185), Berlin Unicorn op, 2005. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 Be7 5.a4 0–0 6.e3 c5 7.c4 Nbd7)

7.c4 Nbd7 8.Be2 Re8 9.0–0 Nf8 10.Ne5 Ng6 11.f4 Bd6 12.Na3 Qc7 13.d4 cd4 (13...b6 14.Rc1=) 14.ed4 Ne4 15.c5 Be5 (15...Be7!?=) 16.fe5+/– f6 17.Rc1 (17.ef6 gf6 18.Rc1 Bd7+/–) 17...fe5+= 18.de5 (18.Bd3 Nf4 19.Be4 de4=) 18...Nc5= (18...Ne5 19.b6 ab6 20.Nb5+–) 19.Bh5 Rf8 20.Rf8 Nf8 21.Bd4 b6 22.Qc2 (22.Nb1 Qe7=) 22...Bd7+= 23.Qc3 (worse is 23.Bc5 bc5 24.Qf2 Qe5 25.Bf7 Kh8–+) 23...Rc8 24.Qe3 Be8 25.Be8 Re8 26.Rc3 (26.a5 Rc8–/+) 26...Nfd7 27.Nc2 (27.a5 Qb7–/+) 27...Qb7–+ 28.a5 (28.Ra3!?–+) 28...Ne4 29.a6 Qb8 30.Rc6 Ne5 31.Be5 Qe5 32.Nd4 Qh5 (32...h6 33.h3–+) 33.Nf3 (33.Qf3 Qh4 34.g3 Ng3 35.Ne6 Nh5–+) 33...Qf5 (33...Qf7 34.Qc1 Nc5 35.Qg5–+) 34.h3 (better is 34.Rc7 Ra8 35.h3–/+) 34...Nc5?? (better is 34...Qf6–+) 35.Rc7= Qb1 36.Kh2 Qb5?? (36...e5 37.Ra7 Qg6= (37...Qb5 38.Qg5 Ne6 39.Qe5+–)) 37.Qg5+– Nd7 (37...Qd7 38.Qe5 (worse is 38.Rd7 Nd7 39.Nd4 Nc5+–) 38...Qc7 39.Qc7+–) 38.Ne5 h6 (38...Qf1 39.Rd7 Qf8 40.Ra7 h6+–) 39.Qg6 Re7 (39...Ra8 40.Rd7 Qd7 41.Nd7+–) 40.Nd7 Rd7 (40...Qc4 41.Rc4 dc4 42.Ne5+–) 41.Qe8 (41.Rc8 Rd8 42.Rd8 Qe8 43.Re8) 41...Kh7+– 42.Qd7 (42.Qd7 Qd7 43.Rd7+–) 1–0. Bulcourf,Carlos – Colombo,Camila, Rubinstein, 2009.

7.Be2 b6 8.0–0 Bb7 9.c4 dc4 10.Ne5 Nbd7 11.Nc4 Qc7 12.a5 Bd5 13.Qc2 Bc4 14.Qc4 Bd6 15.g3 ba5 16.Qa4 Ne5 17.f4+= Ned7 18.Qa5 Qa5 19.Ra5 Bc7 20.Ra1 Bb6 21.Na3 Rad8 22.Nc4 Nd5 23.Rfc1 f6 24.Nb6 ab6 25.e4 Nc7 26.Ra7 Ne8 27.Bc4+– Kh8 28.e5 fe5 29.fe5 Rf7? 30.Be6 Re7 31.Bh3 1–0. Buettner,Fritz (2445) – Flores C,Ricardo (2040), CiF, 2008.

7.h3 a5 8.Be2 b6 9.0–0 Bb7 10.c4 Nbd7 11.cd5 Nd5 12.Na3 Bf6 13.Qb1 Qc7 14.Nc4 Rfd8 15.Bf6 N7f6 (worse is 15...gf6 16.Qe4+=) 16.Nfe5 Nb4 17.Qb2 Ne4 Exerts pressure on the backward pawn 18.d3 Nd6 19.Rfd1 f6 20.Nd6 Rd6 21.Nc4 Rd7 22.Rac1 Rad8 23.d4 Bd5 24.dc5 bc5 25.Rd2 Bc4 26.Rd7 Qd7 27.Rc4 Qd6 28.Qc3 Rc8 29.Bf3 e5 30.Qb3 Kf8 31.Rc1 Qd2 32.Rc3 Qe1 33.Kh2 Qf2 34.b6 f5? (34...Qd2 35.b7 Rd8 36.Rc5 Qd6+–) 35.Qe6+– Re8 36.Qf5 Ke7 (36...Kg8 37.b7 Qh4 38.Rc5+–) 37.b7 (37.b7 g6 38.Qe5 Kf7 39.Qf4 Kg7 40.Rc5+–; worse is 37.Qe5 Kf7 38.Qf4 Kg8+–) 1–0. usingprogram (1960) – xetil (1870), kurnik, 2012.

7.c4 b6

8.Be2 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 Bb7 12.d4 dc4 13.Bc4 Nbd7 14.Qb3 Bf3 (14...Qc7 15.Nbd2=) 15.gf3= Nh5 16.f4 cd4 17.Bd4 (17.Be2 g6 18.Bd4 Bf6=) 17...Bc5 18.Bb2 Qh4 19.Qd1 Ndf6 20.Qf3 h6 (20...e5!? 21.fe5 Ng4=+ (worse 21...Qc4 22.ef6 Nf6 23.Bf6 gf6 24.Nd2 Qb5 25.Kh1=)) 21.Be2+= Rd8 22.Rd1 Rd1 23.Bd1 Bb4 (23...g6 24.Qa8 Kg7 25.Qg2+–) 24.Na3 (24.Bd4 Kh7+–) 24...g6 25.Qa8 Kg7? (better 25...Kh7 26.Nc4 Nf4 27.ef4 Bc5+–) 26.Nc4+– Nf4 27.ef4 Qf4 28.Qf3 Qg5 29.Kf1 Be7 30.Be5 Kg8 31.Qe3 Qh4 (31...Qe3 32.fe3 Nd7 33.Bc7+–) 32.Nb6 Ng4 (32...Qb4 33.Be2+–) 33.Bg4 Qg4 34.Qd3 Qb4 (34...Qg5 35.Nd7 Qc1 36.Kg2+–) 35.Nd7 Qa4 (35...f5 36.b6 g5 37.Kg2+–) 36.b6 (36.b6 Qc6 37.Kg1 Qc1 38.Kg2 Qc6 39.Qf3 Qd7 40.Qa8 Bf8 41.h4+–) 1–0. DEFFM – ziggip, freechess.org, 2019.

8.Be2 Bb7

9.a5 ba5 A) 10.cd5 Nd5 (10...ed5 11.Qa4 a6 12.Qa5 Qa5 13.Ra5 c4 14.Nd4 Re8 15.Bf3 Ne4=; 10...a6; 10...Bd5) 11.Qa4 Nb4 12.0–0 a6 13.Qa5 ab5 14.Qd8 Rd8 15.Ra8 Ba8–/+; B) 10.Bc3 a6 (10...dc4 11.Ba5 Qd7 12.Bc4 a6 13.Nc3 ab5 14.Bb5 Qd6 15.Bc4 Bf3+=; 10...Bd6 11.Ba5 Qe7 12.0–0 a6 13.Nc3 e5 14.d4 ed4 15.ed4 cd4=; 10...d4 11.ed4 cd4 12.Nd4 Bg2 13.Rg1 Bb7 14.Bf3 Qc7 15.Bb7 Qb7=; 10...Re8 11.Ba5 Qd6 12.Bc3 d4 13.ed4 cd4 14.c5 Qf4 15.Ra4 Bc5+=; 10...Qd6 11.Ra5 a6 12.0–0 Rd8 13.ba6 Na6 14.Be5 Qc6 15.cd5 Nd5+=) 11.Ba5 Qd7 12.ba6 Na6 13.cd5 Nd5 14.Ne5 Qe8 15.Na3 Nab4+=; C) 10.Qa4 Re8 (10...a6 11.Qa5 dc4 12.Bc4 Nd5 13.d3 Nb6 14.Nbd2 Bf6 15.Bf6 Qf6+=; 10...dc4 11.Bc4 a6 12.Qa5 Nd5 13.d3 Nb6 14.Nbd2 Bf6 15.Bf6 Qf6+=; 10...h6 11.Qa5 a6 12.d3 Qd6 13.Be5 Qd7 14.Qb6 Qc8 15.Qc7 Nbd7=; 10...Bd6 11.Qa5 Qe7 12.Nc3 a6 13.0–0 dc4 14.Qa4 ab5 15.Qb5 Ba6+=; 10...Kh8 11.Qa5 a6 12.0–0 Qa5 13.Ra5 dc4 14.Bc4 ab5 15.Ra8 Ba8=) 11.Qa5 a6 12.d3 Qd7 13.Ne5 Qd6 14.Qc3 ab5 15.cb5 Ra1+=.

9.a5 a6 10.ba6 Na6 (10...Ra6 11.cd5 Ra5 12.Ra5 ba5 13.de6 fe6 14.Nc3 Nd5 15.0–0 Bf6=; 10...Ba6 11.ab6 Qb6 12.Bc3 Nbd7 13.d3 Bb7 14.Nbd2 Ra1 15.Ba1 Ra8+=) 11.cd5 (11.ab6 Qb6 12.Be5 Nb4 13.Na3 Ng4 14.Bc3 Ra5 15.0–0 Rfa8+=) 11...ed5 (11...Bd5 12.ab6 Qb6 13.Qc1 Rfb8 14.Be5 Nb4 15.Ra8 Ra8+=) 12.ab6 Qb6 13.Nc3 (13.Be5 Nb4 14.Na3 Qe6 15.0–0 Nd7+=) 13...d4 (13...Rfb8 14.Na4 Qe6 15.Be5 Rc8+=) 14.Na4 Qe6 15.0–0 Nd5 16.ed4 Nf4 17.Ne5 (better is 17.Re1+=) 17...Ne2 (better is 17...cd4!? 18.Bf3 Bf3 19.Nf3 Qg6+=) 18.Qe2= f6 19.Qg4 Qb3? (better is 19...Qg4 20.Ng4 cd4 21.Bd4 Rfd8+=) 20.Ra3+– Qd5 21.Rg3 g5 22.Nb6 Qd6 (22...Qa2 23.Nec4 Nc7 24.dc5+–) 23.Nec4 Qc7 24.Na8 Ra8 25.Qe6 Kf8 26.Re1 Nb4 27.Qf5 Kg8 28.Rh3 Bf8 29.Qf6 (better is 29.dc5!? Nd5 30.Qe6 Kh8+–) 29...Ra6 30.Qf5 (30.Qe5!? Qe5 31.Re5 h6 32.dc5 Nc6+–) 30...Bc8 31.Qg5 Rg6 32.Qh4 Bh3 33.Qh3 Nd5 (33...Nc2 34.Re8 Qf7 35.Qc8+–) 34.Ne5 Nf4 35.Qf5 (better is 35.Qf3 Rb6+–) 35...Qb7 36.Qe4 Rg2 37.Kf1 Qb5 (37...Qb2 38.Qf4 Rg7 39.dc5 Qb5 40.d3 Qc5 41.Qc4 Qc4 42.dc4 h6+–) 38.d3 Bh6 (38...Qb2 39.Qf4 Rg7 40.dc5+–) 39.Nc4 (better is 39.Bc1 Bf8 40.Bf4+–) 39...Rh2 40.Qa8 Bf8 41.Qf3 Rh4 42.Qg3 (better is 42.Re4 Qc6 43.Rf4 Qf3 44.Rf3 cd4 45.Rg3 Kf7 46.Ne5 Ke6 47.Nf3 Rh1 48.Ke2+–) 42...Ng6+= 43.Qg2 (43.Qg5 Qb7 44.Ke2 cd4+=) 43...cd4= 44.Qf3 Rf4 45.Qg2 Qf5 46.Re4 (46.Ne5 Kg7=) 46...Qh5 (46...Re4 47.Qe4 (47.de4?? Qb5–+) 47...Qe4 48.de4+=) 47.Ke1= Bb4 48.Nd2 Qa5 49.Bc1 Qa1 50.Re8 Kg7 51.Qb7 (51.Rc8 Bc3 52.Kd1 Qa4 53.Ke2–/+) 51...Rf7–/+ 52.Qb4?? Qc1 (52...Qc1 53.Ke2 Nf4 54.Kf3 Qh1 55.Kg4 Qh5 56.Kg3 Qh3#) 0–1. Piron,J (1705) – Eden,J (2090), 25th Touraine Open, Avoine FRA, 2010.

9.a5 a6 10.ab6 Qb6 (10...ab5 11.Ra8 Ba8 12.cb5 Qb6 13.0–0 Nbd7 14.d4 c4 15.Nc3 Bb7=; 10...dc4 11.ba6 Ra6 12.Na3 Nbd7 13.Nc4 Ra1 14.Ba1 Nb6 15.Qb3 Nc4=; 10...Nfd7 11.Nc3 dc4 12.Bc4 Nb6 13.d3 Nc4 14.dc4 Qc7 15.0–0 Rd8=) 11.Nc3 Nbd7 12.cd5 ed5 13.0–0 ab5 14.Nb5 Ra1 15.Ba1 Bc6 +=.

9.a5 a6 10.cd5 ed5 (10...Nd5 11.ba6 Na6 12.ab6 Qb6 13.Qc1 Nab4 14.Na3 Rfb8 15.0–0 Qd8=; 10...ab5 11.de6 fe6 12.Bb5 Ra5 13.Ra5 ba5 14.d3 Nd5 15.Bc4 Bf6=; 10...Bd5 11.ab6 Qb6 12.Nc3 c4 13.d3 cd3 14.Bd3 Bb7 15.0–0 Nbd7=) 11.ab6 ab5 12.Ra8 Ba8 13.Bb5 Qb6 14.Na3 Nc6 15.0–0 Na7 +=.

9.a5 dc4 10.Na3 Qe8 (10...a6 11.ba6 Ra6 12.ab6 Nbd7 13.Nc4 Ra1 14.Ba1 Nb6 15.Qb3 Nc4=; 10...c3 11.Bc3 Bd5 12.Nc4 Nbd7 13.Qa4 Ne4 14.0–0 Rb8 15.Bd3 f5=; 10...Bd5 11.Nc4 ba5 12.Bc3 Ne4 13.Ba5 Qe8 14.0–0 Bf6 15.Rb1 a6+=; 10...ba5 11.Nc4 a6 12.Ra5 ab5 13.Rb5 Bc6 14.Rb3 Ba4 15.Qa1 Nc6=; 10...Nbd7 11.Nc4 a6 12.ba6 Ba6 13.ab6 Nb6 14.Nce5 Be2 15.Qe2 Ra1=) 11.Nc4 Qb5 12.Bf6 Bf6 13.Nb6 Bf3 14.Bb5 Bd1 15.Na8 Bf3=.

6.a4 Nbd7

7.Be2 b6 8.0–0 a6 9.c4 Bb7 10.d3 (10.cd5 Nd5 11.Nc3 Nc5=) 10...dc4 11.dc4 ab5 12.ab5 Ra1 13.Ba1 Qa8 14.Nbd2 Qa2 15.Qb3 Ra8 16.Qa2 (16.Rd1 Bd6=+) 16...Ra2–/+ 17.Nb3?? (better is 17.Rd1–/+) 17...Re2–+ 18.Nbd4 (18.Nbd2 Ne4 19.Rd1 Bd6–+ (19...Nf2?! 20.Kf1–+)) 18...Ra2 19.Nc6 Bc6 20.bc6 Nc5 (20...Nb8 21.Be5 Ne8 22.Ra1 Ra1 23.Ba1 Nc6 24.Bc3–+) 21.Bd4 (21.Be5 Ne8–+) 21...Nd3 22.Ne5 Bc5 (better is 22...Ne5 23.Be5 Ne8 24.Rc1–+) 23.Bc3?? (better is 23.Nd3 Bd4 24.ed4–+) 23...Ne4 (better is 23...Nf2!? 24.Bd4 N2g4 25.Ng4 Ng4 26.Re1–+) 24.Nd3 Bd6 25.Be5 Be5 26.Ne5 Nd2 27.Rd1 Ne4?? 28.f3 Nc5?? 29.Rd8 1–0. ATUK – disco, Live Game Caissa's Web, 2005.

7.Be2 b6 8.a5 ba5 9.0–0 Bb7 (9...Bb4=) 10.d4 (10.Ra5!? c5 11.Ra2=) 10...c5 11.c4 (11.Bc3 a4=+) 11...dc4 12.dc5 (12.Nbd2 cd4 13.Nd4 Ne5 14.Nc4 Nc4 15.Bc4 Rc8=+) 12...Bc5 (12...Nc5 13.Bc4 Rc8 14.Qd8 Bd8 15.Nc3–/+) 13.Nbd2 Nb6 (13...c3 14.Bc3 Bb4 15.Bd4–/+) 14.Ne5 (14.Nc4 Nc4 15.Bc4 Rc8–/+) 14...Bb4 (14...Ne4 15.Ndc4 Nc4 16.Bc4=+) 15.Ndc4=+ Qd1 (better 15...Nc4!? 16.Bc4 Qd1 17.Rfd1 Rac8=+) 16.Rfd1= Exerts pressure on the isolated pawn (worse 16.Rad1 Rfc8–/+) 16...Nc4 (16...a4 17.Nc6 Bc6 18.bc6=) 17.Nc4+= (worse 17.Bc4 Rac8=+) 17...Rfd8 (17...Rac8 18.Na5 Be4 19.Bf1+=) 18.Rd8 (18.Na5 Rd1 19.Bd1 Be4+=) 18...Rd8 19.Na5 (19.Bf1 a6 20.Na5 Ba5 21.ba6 Ba6 22.Ba6 Bb4+=) 19...Ba5= 20.Ra5 h6? (better 20...Rd2 21.Bf6 Re2=) 21.Ra7 (better 21.Bd4 Ra8 22.Ra7 Ra7 23.Ba7+–) 21...Bd5? (better 21...Rd2 22.Bd4 Re2+–) 22.Be5 Rb8 (22...Be4+–) 23.Bb8 1–0. GuestPDGQ – GuestRBHD, freechess.org, 2020.

7.Be2 c5 8.d3 b6 (8...Qc7 9.0–0=) 9.c4 Bb7 10.Nbd2 Re8 11.cd5 ed5 12.h3 (12.0–0 a6=) 12...a6+= 13.Qc2 Qc7 14.0–0 h6 15.Rfc1 ab5 16.ab5 Ra1 17.Ra1 Ra8 (17...Bd6 18.Nb3=) 18.Ra8+= Ba8 19.Nh4 Qa7 20.Nf5 Bf8 21.d4 g6 22.Nh4 Bb7 23.Bc3 Bg7 24.dc5 (24.Nhf3 Ne4=) 24...bc5 25.Nhf3 Ne4 (25...Qb6 26.Nb3=) 26.Bg7+= Kg7 27.Ne4 de4 28.Nd2 Qa1 29.Bf1 f5 30.Nb3 Attacking the isolated pawn on c5 30...Qe5 31.Qd2 (31.Be2 Kg8=) 31...Qd5 (31...Bd5!?=) 32.Qb2+/– Kh7 33.Na5 Nb6 (better is 33...Ba8!?+=) 34.Qf6+– Nc8 35.Qf8 h5 36.Nb7 Qb7 37.Bc4 Ne7 38.Be6 (38.b6 Qd7+–) 38...c4 (better is 38...Qa7!? 39.Qf7 Kh6+–) 39.Bc4 Qd7 40.b6 Qd1 41.Kh2 Qd6 42.g3 Qd7 43.Qf7 Kh6 44.h4 Qb7 (44...Qd8 45.Qf6 f4 46.b7 fg3 47.Kg2 gf2 48.Qf4 Kh7 49.b8Q f1B 50.Kf1 Qd1 51.Kf2 Qd2 52.Be2 Qe3 53.Qe3 Nc8 54.Qc7 Ne7 55.Qe7 Kg8 56.Bc4 Kh8 57.Qd4) 45.Qe8 Kg7 (45...Nc6 46.Bd5 Qg7 47.Bc6+–) 46.Ba6! Qa6 47.Qe7 Kh6 48.b7 Qf1 49.Qg5 Kh7 50.Qf4 1–0. zack1984 (1930) – fibro (1855), gameknot.com, 2016.

7.Be2 Bd6 8.0–0 =.

7.Be2 Re8 8.0–0 Nf8 (8...Bd6 9.c4=) 9.d4+= Ng6 (9...a6 10.Nbd2+=) 10.Nbd2 (10.c4 Bd7+=) 10...Bd6 (10...c6 11.c4+=) 11.c4 c6 12.Qc2 (12.c5 Bc7+=) 12...Bd7 (12...e5 13.de5 Ne5 14.cd5 cd5 15.Be5 Be5 16.Ne5 Re5 17.Qb2+=) 13.c5+/– Bc7 14.Ne5 Rf8 (14...Qe7 15.Bc3+/–) 15.f4 (15.Bc3 Qe7+/–) 15...Ne8 (15...Ba5 16.Bc3+/–) 16.Bd3 (16.Ndf3 Ne5 17.Ne5 f5+/–) 16...f5 (16...Ne5 17.de5 g6 18.e4+/–) 17.Ndf3 Nf6 18.Qe2 (18.a5 cb5 19.a6 ba6 20.Nd7 Qd7 21.Ra6 b4+/–) 18...Qe8 (18...Ne5 19.Ne5 Ne4 20.Be4 fe4 21.Bc3+=) 19.Kh1 (19.a5!? Be5 20.Ne5 Ne5 21.fe5+/–) 19...Ne5+= 20.Ne5 Ne4 21.g4 (21.Rf3 Qd8+=) 21...Be5 22.fe5 Qg6 (22...Qe7 23.gf5 Rf5 24.bc6 bc6 25.Be4 de4 26.Bc3=) 23.Be4 (23.gf5!? Rf5 24.Rf5 ef5 25.Rg1=) 23...fe4+= 24.h3 (24.Rf8 Rf8 25.b6 a6+=) 24...Rf1 (24...Rf3!? 25.Rf3 ef3 26.Qf3 cb5 27.ab5 Bb5–/+) 25.Rf1+= (25.Qf1? Rf8 26.Qg2 Qg5–+) 25...cb5 26.ab5 Qe8 27.c6 bc6 28.Ba3 c5 29.Rb1? cd4–+ 30.ed4 Rb8 31.Bc5 Bb5 32.Qd2 a6 33.Bd6 Rb7 34.Rc1 Bc4 0–1. Rebber,Christian (2145) – Strumpf,Hendrik, Werther Schloss op 6th, 2000.

6.c4 a6=+

7.a4 Bd7 8.Qc2 ab5 (8...Re8 9.Ne5=) 9.cb5 (9.ab5 Ra1 10.Ba1 dc4 11.Bc4 c6=) 9...c6. pcmvr (2535) – dyddulikthat (2145), net–chess.com, 2006.

7.a4 Nbd7 8.ba6 ba6 9.Nc3=+.

7.a4 Nbd7 8.d3 dc4 9.Nbd2 (9.dc4!? ab5 10.ab5 Bb4 11.Nbd2 Ra1 12.Ba1=+) 9...cd3 10.Bd3 Nc5 11.Bb1 Nd3 12.Bd3 Qd3 13.b6 (13.Qb1 Qb1 14.Rb1 ab5 15.ab5 Rd8–/+) 13...cb6–+ 14.Ne5 Qd5 15.0–0 b5 16.ab5 Qb5 17.Ndc4 Rd8 18.Qe2 Qe8 19.Nb6 Rb8 20.Nec4 Nd7 21.Rfd1 f6 22.e4 Nb6 23.Nb6 Bc5 24.Rd8 Qd8 25.Nc8 Rc8 26.e5 f5 27.Kh1 Qb6 28.Qc2 Rd8 29.f4 Be3 30.Bc3 Qc6 31.Rd1 Rd4! 32.h3 Qc4 33.Rb1 Rd3 34.Rb4 Qc3 35.Qc3 Rc3 36.g3 b5 37.Rb2 Rd3 38.Rb1 Bd4 39.Kg2 Bc3 40.g4 fg4 41.hg4 b4 42.Kf1 a5 43.Ke2 Rd2 (44.Ke3 a4–+) 0–1. Pierred (2080) – Nemrod (2645), Rated game, 2005.

7.a4 Nbd7 8.d4 Ne4 (8...Bb4 9.Nc3=+) 9.Nbd2 (9.Bd3 ab5 10.ab5 Ra1 11.Ba1 Bb4 12.Nbd2 Nb6=) 9...Bb4 (9...ab5 10.ab5 Ra1 11.Qa1=) 10.Bd3 (10.Qb3 Bd2 11.Nd2 Nd2 12.Kd2 ab5 13.cb5 Nf6=) 10...Qf6 (10...Nd2 11.Nd2 dc4 12.Bc4=+) 11.0–0= Nd2 12.Nd2 Nc5 13.Bc2 Nd7 (13...ab5 14.ab5 Ra1 15.Ba1+/–) 14.Qe2 (14.Qh5 h6 15.Rfd1 ab5 16.ab5 Ra1 17.Ba1 Bd2 18.Rd2 dc4=) 14...Rd8 (14...Bd2 15.Qd2 dc4 16.Qb4+/–) 15.Nf3 Nb6 (15...c5 16.Qd3 Qg6 17.cd5 Qd3 18.Bd3 ed5 19.dc5 Nc5 20.Bc2=) 16.c5 (16.Qd3 Qh6 17.c5 Nc4=) 16...Nc4= 17.Bd3 Nb2 18.Qb2 Bc5 19.ba6 (19.Bh7 Kh8=) 19...ba6 20.Bh7 Kf8 (20...Kh7 21.Qc2) 21.Bd3 (21.Rfb1 Bd6 22.Bd3 c5=) 21...Be7 22.Qc2 Bd6 23.Rfb1 (23.Rab1 Kg8+=) 23...Ra7 24.Rc1 Ra8 25.a5 Bb7 26.Ne5 c5 27.Ng4+/– Qg5 28.dc5 Qg4 29.cd6 d4 30.Bf1 Qe4 31.Qc7 de3+= 32.Qe7 Kg8 33.Rc7 Rf8?? 34.Rb7+– Rae8 35.Qc7 Rc8 1–0. Gretencord,Ulrich – Roessel,Peter, DESC, 2001.

7.Qa4 dc4 8.Bc4 c6 =.

7.Nc3 ab5 8.cb5 c5 9.bc6 Nc6 10.Bb5 =+.

7.Nc3 ab5 8.cb5 Nbd7 9.d4 c5 10.Be2 c4 11.0–0 b6 12.e4 Bb7 13.e5 Ne8 14.Qc2 f6 15.Rad1 fe5 16.Ne5 Ne5 17.de5 Qb8 18.Na4 Qa7 19.Nc3 Nc7 20.Bg4 Bc8 21.a4 Bb4 22.Ra1 Rf4 23.Bf3 Bb7 24.Ne2 Rf7 25.Bd4 Qa5 26.Rfb1 Be7 27.Bc3 Qa7 28.a5 Bc5 29.Bd4 Bd4 30.Nd4 ba5 31.b6 Qa6 32.bc7 Rc7 33.Qc3 Bc8 34.Bd1 Bd7 35.Ba4 Ba4 36.Ra4 Rb7 37.Rba1 Qb6 38.f4 Rf7 39.g3 Rfa7 40.Kf1 Rb7 41.Ra5 Ra5 42.Qa5 Kf7 43.Qb6 Rb6 44.Ra7 Kf8 45.Rd7 Ra6 46.f5 ef5 47.Nf5 c3 48.Nd4 Ke8 49.Rd5 Ra4 50.Ke2 Ke7 51.Kd3 Ra2 52.e6 c2 53.Rd7 Kf6 54.Nc2 Ke6 55.Rg7 h5 56.Rg5 Ra8 57.Rh5 Rg8 58.Nd4 Kd6 59.Nf5 Ke6 60.h3 Ra8 61.Ke4 Ra2 62.Nd4 Kf7 63.g4 Rg2 64.Rf5 Kg6 65.Nf3 Re2 66.Kd3 Re6 67.Ne5 Kh6 68.g5 Kg7 69.h4 Rd6 70.Ke4 Ra6 71.Rf7 Kh8 72.h5 Ra2 73.h6 Ra6 74.Kf5 Kg8 75.Rg7 Kf8 76.Nd7 Ke8 77.h7 Rh6 78.gh6 Kd8 79.Ne5 Ke8 80.h8Q 1–0. GLChess213 – ExChess401, computer chess game, 2001.

7.Nc3 dc4 8.Bc4 ab5 9.Bb5 c6 10.Be2 b6 11.Qc2 Bb7 12.Rd1 (12.0–0 Qd6=) 12...Na6 13.0–0 Nb4 14.Qb1 Qc7 15.d4 Nfd5 16.Nd5 Nd5 17.Bd3 h6 18.Ne5 Bd6 19.g3 Be5 20.de5 Rfd8 21.a3 Ne7 22.Be4 c5 23.Rd6 Bd5 24.Rd1 Be4 25.Qe4 Nf5 26.g4?? (better is 26.Qg4=) 26...Nd6–+ 27.ed6 Qd7 28.f4 Ra4 29.Qg2 f6 30.h4 (30.Qc2 e5 31.h3 ef4 32.Qb3 Kh7 33.ef4 Rf4–+) 30...e5 31.f5 (31.Qf3 Qe6 32.g5 Rd6 33.gf6 gf6 34.Rd6 Qd6 35.fe5 fe5 36.Qg3 Kh7 37.Be5 Qd7–+) 31...h5 32.Qd5 Qf7 33.Qe6 (33.gh5 Qd5 34.Rd5 Rh4–+) 33...Rg4 34.Kf2 Rd7 35.Kf3 Rh4 36.e4 (36.Kg3 g5–+) 36...Rh3 37.Kg2 Re3 38.Kf2 Re4 39.Kf3 (39.Rd3 h4–+) 39...Rf4 40.Ke3 Rg4 41.Rd5 g6 42.Be5 gf5 43.Qf6 Qf6 44.Bf6 Kf7 45.Ba1 Re4 46.Kf3 Ke6 47.Rd2 Ra4 48.Rd3 c4 49.Rc3 b5 50.Kg3 Rb7 (51.Kf4 Rf7 52.Re3 Kd7–+; better is 50...Rd6 51.Re3 Kd7 52.Kf4–+) 0–1. Schoppmeyer,Herbert – Stephan,Werner, OWL–ch Loehne, 1971.

7.Nc3 dc4 8.Bc4 ab5 9.Nb5 c6 10.Nbd4 Nbd7 (10...b5 11.Be2=+) 11.0–0 (11.Be6 fe6 12.Ne6 Qb6=+) 11...Nb6 (11...e5 12.Nf5=+) 12.Bb3 Nfd5 (12...Bd6 13.Qc2=+) 13.Ne5 (13.Qc2 Nb4 14.Qe4 Na4=+) 13...Nd7 (13...f6 14.Nc4 Nc4 15.Bc4=+) 14.Ndf3= Nc5 (14...f6 15.Nd3=) 15.Bc2 Nb4 16.Bb1 f6 17.a3 Nd5 18.Bh7?? (better 18.Qc2 f5 19.Ba2=) 18...Kh7–+ 19.Ng5? (better 19.Qc2 f5 20.Rfb1–+) 19...fg5 20.Qh5 Kg8 21.Ng6 Bf6 (21...e5 22.Nf8 Qf8 23.Be5–+) 22.Bf6 Nf6 (22...Qf6?! 23.Qh8 Kf7 24.Qf8 (24.Nf8? g6 25.Qh6 Qg7 26.Qg5 Qf8–+) 24...Kg6 25.Qc5=; 22...gf6 23.Qh8 Kf7 24.Qh7 Ke8 25.e4–+) 23.Qh8 Kf7 24.Ne5 Ke8 25.Qg7 Qe7 (better 25...Nb3 26.Qg6 Ke7 27.Rab1 Nd2 28.Rfd1–+) 26.Qg6 (26.Qe7 Ke7 27.Ng6 Ke8 28.Nf8 Kf8 29.d4–+) 26...Kd8 27.Qg5 Rg8 28.Qf4 (28.Qh4 Ncd7 29.d4 Ne5 30.de5 Ng4–+) 28...Nd5 (28...Nb3 29.Ra2–+) 29.Qc4 (29.Qf7 Qf7 30.Nf7 Ke7–+) 29...Ra4 30.Qc2 Qg7 31.g3 Qe5 32.Qc5 (32.d4 Qh5 33.Qc5 Rh8–+) 32...Rag4 (32...Rh4! 33.f4 Qh8 34.Qd4 Rh2 35.Qh8 Rgh8 36.Rac1–+) 33.d4 Qc7 (33...Qc7 34.Rfc1 e5–+; 33...Qh5 34.Qd6 Ke8 35.Qe5–+) 0–1. Straeter – Bojkovic, 1998.

7.d4 Bb4 8.Nfd2 dc4 9.Qa4 Bd2 10.Nd2 Bd7 11.Bc4 Qe8 (Better is 11...c6!? 12.b6 Qb6=) 12.Ba3+/– Bb5 13.Bb5 (13...Qb5 14.Qb5 ab5 15.Bf8 Kf8 16.Ke2+=). Bonetti,Shane – urquiza (1685), ICC, 2002.

7.d4 Ne4 8.cd5 Bb4 9.Nfd2 ab5 10.Qb3 Ba5 11.Bb5 Qg5 12.g3 Qf5 13.Rf1 ed5 14.Ba3 c5 15.dc5 d4 16.Bd3 Nc6 17.Qc2 de3 18.fe3 Qg5 19.Be4 Qe3 20.Kd1 Bd2 21.Bh7 Kh8 22.Qe4 Rd8 23.Kc2 Ra3 24.Qe3 Re3 25.Nd2 0–1. Machete99 (2025) – Plumpudding (2280), ICC, 2002.

7.cd5 ed5 8.Qc2 Ne4 9.Nc3 Bf5 10.Nd4 Bg6 11.d3 Nc3 12.Qc3 Bf6 13.Rc1 ab5–/+ 14.Qc7 Qc7 15.Rc7 Ra2 16.Bc1 Bd4 17.ed4 Na6 18.Rc3 b4 19.Rb3 Rc8 20.Rb1 b3! 21.Bg5? Rcc2 22.Be7 b2 23.Kd1 Rf2 24.Be2 Bh5! 25.Kc2 Be2 (26.Kb3 Ra5–+) 0–1. Pierred (2205) – Sirena, Rated game, 1m + 2s, 2005.

7.a4 ab5

8.cb5 c6 9.Qc2 cb5 10.Bb5 Bd7 11.Bd7 Nbd7 12.0–0 Ne4 13.d4 Rc8 14.Qd3 Bb4 15.Nfd2 Nd2 16.Nd2 Qb6 17.Rfb1 Qa6 18.Qa6 ba6 19.Nf3 Rc2 20.Ba3 ½–½. Dresling,Stig (2020) – Bertelsen,Niels (1730), Denmark veterans computerfree ch, 2002.

8.cb5 c6 9.Nc3 Nbd7 10.d4 Bb4 11.Bd3 c5 12.dc5 Nc5 13.Qc2 Nfe4 14.0–0 ½–½. Nikolic,Jovani – Sakamoto,Fernando (1815), Americana op, 2009.

8.cb5 c6 9.Be2 c5 10.0–0 b6 11.d4 Nbd7 12.Nbd2 Bb7 13.Ne5 Ne4 (13...c4!?=+) 14.Ne4+= de4 15.Nc6 Bc6 (15...Qe8 16.Qb1 Nf6 17.Ne7 Qe7 18.dc5 bc5 19.a5+/–) 16.bc6+/– Nf6 17.dc5 Nd5? (better is 17...bc5 18.Qd8 Rfd8+/–) 18.cb6+– Qb6 19.Qd4 Bf6 (19...Qd4 20.Bd4 Rfc8+–) 20.Qb6 Nb6 21.Bf6 (21...gf6 22.a5+–) 1–0. michaelbuss – Whiterose, ChessWorld.net, 2005.

8.cb5 Nbd7 9.Be2 c5 10.0–0 Qc7 11.Nc3 b6 12.Rc1 Bb7 13.Re1 Bd6 14.g3 e5 15.Na2 e4 16.Nd4 Be5 17.Qc2 Rfc8 18.Nf5 Bb2 19.Qb2 Rd8 20.Qc2 Ne5 21.Nd4 Qd7 22.Nb3 Qh3 23.Qd1 Neg4 24.Bg4 Ng4 0–1. Machete99 – guest1898, ICC, 2002.

8.cb5 Ne4 9.Be2 Nd7 (9...c5 10.0–0=) 10.Qc2 Ndf6 (10...Bd6 11.d3 Ng5 12.Nbd2=+) 11.0–0 Ng4 (11...Bd7 12.d3 Nd6 13.Ne5=) 12.a5 Bd7 (12...Bd6 13.a6=) 13.Nc3 f5 (13...Nc3 14.Bc3 c6 15.a6+=) 14.h3 (14.a6 ba6 15.ba6 Ra7+=) 14...Ngf2 (better is 14...Ngf6!?+=) 15.d3 Ng4 16.hg4 (16.Ne4 fe4 (< 16...de4 17.hg4 ef3 18.Bf3=) 17.de4 Ne3=+; < 16.de4 Ne3 17.Qa4 fe4–+) 16...Ng3 17.gf5 (better is 17.Rf2!?+–) 17...Nf1+= 18.Bf1 Rf5 19.a6 Bc8 (19...ba6 20.ba6 Bg5 21.Qe2+/–) 20.d4 Rf8 21.a7 Bd7 22.Bd3 h6 23.Ne2 Bd6+/– 24.Ne5 Be5 25.de5 Kh8 26.Nf4 Rf7 27.Bg6 Re7 28.Bc3 Bb5 29.Bb4 b6 30.Be7 Qe7 31.Bf5! Be8 32.Be6 b5 33.Bd5 c6 34.Ng6 Bg6 35.Qc6 Qd8 36.Qa8 Qa8 37.Ba8 Kh7 38.Bd5 Bf5 39.a8Q h5 40.Qg8 Kh6 41.Qh8 Kg5 42.Qg7 Bg6 43.Qf6 Kh6 44.Ra8 b4 45.Rh8# 1–0. orane – caissa, caissa.com, 2007.

8.cd5 Ra4 9.Ra4 ba4 10.de6 Be6 11.Qa4 =+.

8.cd5 Nd5 9.Bb5=+ c6 10.Bc4 (10.Be2 b6=+) 10...Bd7 (10...Nd7 11.0–0=+) 11.0–0= b5 (11...Na6 12.a5=) 12.Bd5 (12.Be2 Ra5=) 12...cd5=+ 13.ab5 Ra1 14.Ba1 Bb5 15.Re1 (15.d3 Nc6=) 15...Bf6 (15...Bd3 16.Ne5 Bf5 17.d3=+) 16.d4 (16.Bf6 Qf6 17.d3 Nc6=) 16...Qa5 (16...Nc6 17.Nc3 Bc4 18.Nd2=+) 17.Nbd2 (17.Bc3 Qc7=+) 17...Rc8=+ 18.Qb3 Qa4 (18...Be7 19.Rb1 Be2 20.Bc3=+) 19.Rb1 (19.Qa4 Ba4 20.e4 Rc2=+) 19...Qb3 20.Nb3 (20.Rb3?? Rc1 21.Ne1 Re1 22.Nf1 Rf1) 20...Bd3 (20...Be7 21.Nc5 Bc5 22.Rb5 Bd4 23.Rb1 Ba1 24.Ra1–/+) 21.Rd1 Ba6 (21...Be2 22.Rc1 Rc1 23.Nc1 Bf3 24.gf3=+) 22.Rc1 ½–½. gtate (1960) – petre (2195), net–chess.com, 2006.

8.ab5 Ra1

9.Ba1 b6 10.Be2 c5 11.0–0 Ne4 (11...Bb7 12.d4=) 12.d3 Nd6 13.Nbd2 Nd7 14.Bb2 (14.Qc2 Bf6=) 14...Bf6 (14...Bb7 15.Qc2=) 15.d4 (15.Bf6 Qf6 16.Qa1 Qe7=) 15...dc4 16.Nc4 (16.Bc4 Bb7=) 16...Nb5=+ 17.Qa4 (17.Qb3 Ba6=+) 17...Nc7 18.Nd6 (18.Qc2 Nd5=+) 18...Nd5 (18...Qe7 19.Ne4=+) 19.e4 (19.Nc8 Qc8 20.e4 Nc7=+) 19...Nf4 (19...cd4 A) worse 20.ed5 Nc5 21.Nf7 Rf7–+ (21...Kf7?! 22.Qa7 Kg8 23.Bd4–/+); B) 20.Bd4 Bd4 21.Qd4=+) 20.Bb5= cd4 21.Bd4 Bd4 22.Qd4 (22.Nd4?? Nc5 23.Nf7 Rf7–+ (23...Na4?! 24.Nd8 Nc3 25.N8c6–/+)) 22...Nc5 23.g3 (23.e5!? Ng6 24.Bc6=+) 23...Ng6=+ 24.Rd1 Ba6 (24...Bd7 25.Bc4=+) 25.Ba6= Na6 26.h4 Nc5 (26...f6 27.h5 Ne7 28.h6 gh6 29.e5–/+) 27.h5= Ne7?? (better 27...Nh8=) 28.Nf5+– Nd5 (28...Qd4 29.Ne7 Kh8 30.Rd4 h6+–) 29.Qg7 1–0. DEFFM – GuestQBFX, freechess.org, 2018.

9.Ba1 dc4 10.Qc2 b6 11.Bc4 Nbd7 12.Nc3 Nc5 (12...Bb7!?=) 13.d4+/– Nb7 14.Ne5 Na5 15.Bd3 Bd6 16.0–0 h6 17.Bb2 Bb7 18.Ra1 Nd5 19.Nd5 ed5 20.Ba3 Ba3 21.Ra3 Qd6 22.Rc3 Rc8? (better is 22...Nc4 23.Nc4 dc4 24.Rc4 Rc8+–) 23.Bh7 Kf8 24.Bf5 Rd8 (24...Re8 25.Rc7 Re5 26.de5 Qe5+–) 25.Rc7 f6 (25...Nc4 26.Rf7 Kg8 27.Rb7 Ne5 28.de5 Qe5+–) 26.Be6!! fe5 (26...Qe6 27.Qh7 Combination) 27.Qf5 (27.Qf5 Ke8 28.Qf7) 1–0. usingprogram (2065) – elle111, kurnik, 2011.

9.Ba1 dc4 10.Bc4 Nbd7 11.Nc3 Nb6 12.Be2 Bd7 13.0–0 Qa8 14.Qb3 Qa3 15.Qc2 Ra8 16.Bb2 Qc5 17.d4 Qb4 18.Ne5 Be8 19.Nd3 Qd6 20.Ne5 (20.Nc5 Nbd7 21.Nb7 Qb6+–) 20...Nbd5 21.Nc4 Qd8 22.Ne5 Nc3 23.Qc3 Nd5 24.Qb3 Bd6 25.Nd3 (25.e4 Nf4 26.Bc4 Ra5=) 25...Qh4 26.g3 Qe7 (26...Qg5!?=) 27.e4+= Nb6 28.e5 Ba3 29.Ra1 Bb2 30.Ra8 Na8 31.Qb2 Nb6 (31...Qd8 32.h3+=) 32.Nc5+– Nd5 33.Nb7 Qb4 34.Qb4 Nb4 35.Nc5 Nd5 (35...Nc2 36.Nb3+=) 36.Ne4 Kf8 0–1. GuestHVTN – GuestZRRK, freechess.org, 2017.

9.Ba1 c5 10.Be2= Qa5 11.Bb2 (11.Bc3 Qb6=) 11...dc4 12.Bc4 Qb4 (12...Rd8 13.Qc2=) 13.Qc2 (13.Qb3 Qb3 14.Bb3 b6=) 13...Bd7 (13...Rd8 14.Qc3=) 14.Na3 Nd5 (14...b6 15.Ng5 Rd8 16.0–0=) 15.0–0 Qc4?? (better is 15...Re8+=) 16.Nc4 (16...Bb5 17.Bg7 Kg7 18.Qb2 Nc3 19.Qc3 Bf6 20.Qb3+–; 16.Qc4 f6+–) 1–0. Mehlhorn,U – Spaete,E, H–2076–D, 2000.

9.Ba1 c5 10.Be2 Nbd7 11.0–0 b6 12.Qc2 Bb7 13.d3 Qc7 14.Nbd2 Ra8 15.h3 Ne8 (15...e5 16.Bb2=+) 16.Rc1 (16.Bc3 Nd6=) 16...Bf6 (16...Nd6 17.Bb2=) 17.d4= cd4 18.Nd4 (18.Bd4 Rc8=) 18...Rc8 (18...Nc5 19.cd5 Bd5 20.Bc3=+) 19.cd5= Qc2 20.Rc2 Rc2 21.Nc2 Bd5 (21...ed5 22.Bf6 Nef6 23.Nd4=) 22.Bf6 Ndf6 (22...Nef6 23.f3+=) 23.f3 e5 24.Nb4 Nd6 25.Nb1 (25.Nc6 e4=) 25...Bc4 26.Bc4 Nc4 27.Kf2 Ne8 28.Nc3 Ned6 29.Nbd5 Na3 Exerts pressure on the isolated pawn (29...f6 30.Ke2=) 30.Nb6 Nab5 (30...f6 31.Nca4=) 31.Nb5 (31.Ncd5 f6=) 31...Nb5 32.Nc4 f6 33.f4 ef4 34.ef4 Kf7 35.g4 Ke6 36.Ke3 Kd5 37.Nb6 Kc6 38.Nc8 Kd7 39.Nb6 Kc6 40.Nc8 ½–½. Zubritskiy,Artyom (2440) – Mendonca,Leon Luke (2220), 19. Sant Marti Open, 2017.

9.Ba1 c5 10.Be2 Nbd7 11.Qc2 b6 12.0–0 Qc7 13.d4 Bb7 14.Nbd2 Rc8 (14...Ra8 15.Rc1=) 15.Rc1 Bd6 16.h3 Ra8 (16...cd4 17.Bd4 h6 18.Ra1=) 17.cd5 (17.Bb2 Qb8=) 17...ed5 18.dc5 bc5 19.Nb3 (19.Bc3 c4=) 19...Qb6 (19...c4 20.Nbd2=) 20.Rd1 (20.Nbd2 c4=) 20...h6 (20...c4 21.Nbd4=+) 21.Nh4 (21.Nbd2 Bc7=) 21...Re8 (21...Bf8 22.Nf3=+) 22.Bf6 (22.Bb2!?=) 22...Nf6–/+ (worse 22...gf6 23.Qf5 Ne5 24.f4+–) 23.Nf5 Bf8 24.Qc3? (better 24.Ng3!?=+) 24...Ne4–+ 25.Qb2 (25.Qe1 g6 26.Nh4 Bg7–+) 25...Qe6 (25...g6!? 26.Nh4–+) 26.Bg4 (26.Nh4 g6–+) 26...h5! 27.f3 (27.Bh5 g6 Double attack (27...Qf5 Deflection; 27...g6 Decoy)) 27...hg4 28.fe4 Qe4 29.Nc5? (29.Rf1 Qb4 30.Qf2–+) 29...Qf5 30.Nb7 (30.hg4 Qc8 31.Nb7 Qb7–+) 30...gh3 31.Qd4 (31.Qe2 Qc8 32.Rd5 Qb7 33.Qf3–+) 31...hg2 32.Qd5 (32.Nd6 Bd6 33.Qd5 Bh2 34.Kh2–+) 32...Qg4 (better 32...Re5 33.Nd6 Qf1 34.Rf1 gf1Q 35.Kf1 Rd5 36.Ne4–+) 33.Rd4 (33.Nd8 Re5! 34.Qe5 (34.Qf7?? Kh7 35.Qd7 Qf3 36.Qd3 Rf5 37.Qf5 Qf5–+) 34...Qd1 35.Kg2 Qd8 36.Kf3–+) 33...Qg3 34.Qg2 (34.Rf4 Qe3 35.Rf2 Re6–+) 34...Qe3 35.Qf2 Qg5 36.Kh1 (36.Kh2 Qb5 37.Nd6 Bd6 38.Rd6–+) 36...Qb5 37.Nd6 Qc6 38.Qg2 Re1 (38...Re1 39.Kh2 Bd6 40.Rd6 Qd6 41.Qg3 Qh6 42.Qh3 Re2 43.Kg3 Re3 44.Kg4 Rh3 45.Kf5 Rh4 46.Ke5 Qe6) 0–1. Akgul,Emre Ramazan (1615) – Kisadere,Kutay (1805), TCh–TUR 2nd League, 2017.

9.Ba1 c5 10.Be2 Nbd7 11.d3 b6 12.Nbd2 Bb7 13.0–0 Qc7 14.cd5 ed5 (14...Nd5 15.Nc4=) 15.Qc2 Ra8 (15...Bd6 16.Rc1=) 16.d4 (16.Bc3 Bd6=) 16...c4 17.Rc1 Bd6 18.Bc3 Nf8 (18...Qb8 19.Qb1=) 19.Ra1 (19.Ne5 Ne6=) 19...Ra1=+ 20.Ba1 Ng6 (20...Ne6 21.Ne5=+) 21.Bc3 Bc8 (21...Qe7 22.Qb2=+) 22.e4= de4 23.Ne4 Ne4 24.Qe4 Bd7 25.Qd5 (25.Qa8 Bf8 26.Qa4 Be6+=) 25...Nf4 26.Qa8 Bf8 27.Bf1 ½–½. Luzuriaga,Norberto Horacio – Kagel,Fred, Tiger SC, 1999.

9.Ba1 c5 10.Be2= Ne4 11.0–0=.

9.Ba1 Qd6 10.Be5= Qc5 (10...Qb4 11.Qc2=) 11.d4 Qb4 12.Nbd2 Bd7 (12...Qa5 13.c5=) 13.Qb3+= Ne4 (13...Qa5!?+=) 14.Qb4+/– Bb4 15.Bd3 (15.Bc7 Rc8 16.b6 Na6=+) 15...Nc3= 16.cd5 ed5 17.Bc7 Bb5 18.Bb5 Nb5 19.Bf4 (19.Be5 Nc3=) 19...Nc3 ½–½. Gerold,Guenter – Offenborn,H, corr ICCF EU/M/978, 1992.

9.Ba1 Bd6 10.Be5 =.

9.Ba1 c6

10.Nc3 Qa5 11.cd5 ed5 12.Bd3 (12.Be2 Bf5=). Trokenheim,Marek – Alvarez Garcia,Fernando, corr TKM, 1999.

10.Nc3 cb5 11.Nb5 Nc6 12.Qb1 Bd7 (12...Bb4 13.Nbd4 Bc5 14.Nc6 bc6 15.Bf6 Qf6 16.d4=) 13.cd5 Nd5 14.Be2 Ncb4 15.0–0 Bb5 16.Bb5 Qa5 17.Be2 Rc8 (17...Ra8 18.Be5=) 18.Rc1 Rc1 19.Qc1 Nc6 20.g3 (20.Qb2 Nf6+=) 20...g6 (20...Qa2 21.Bb2=) 21.Bf1 (21.Bb2 Nb6=) 21...Qa4 (21...Qc7 22.Qb2 Bf6 23.d4+=) 22.Bg2 Ndb4 23.Ne1 (23.Ne5 Bf6 24.d4 Be5 25.de5 Nd3=) 23...Nd5 ½–½. Pommerel,Wim – Schaper,H, NetherlandsD Mkl, 1997.

10.Nc3 b6 11.Ne5 Bb7 12.Qf3 =+.

10.Bd3 dc4 11.Bc4 cb5 12.Bb5 Bd7 13.Bd7 Nbd7 14.0–0 (14.Nc3 Qa5=) 14...Qc7 (14...b5 15.d3+=) 15.Nc3= Nc5 (15...Rc8 16.Qb1=) 16.Qb1 Rc8 17.d4 (17.Rc1 Ncd7+=) 17...Ncd7 18.Ne2 b6 19.Ng3 (19.Rc1 Qb7=) 19...Qc2 20.Qb5 Qc6 21.Qb1 b5 22.Qb2 (22.Bb2 Qc2+=) 22...b4–/+ 23.h3 Qc2 24.Qc2 Rc2 25.Rb1 Nd5 26.Ne1 Ra2 27.Nd3 f5 (27...Rd2 28.Ne5 Ne5 29.de5–/+) 28.Bb2 (28.e4 fe4 29.Ne4 Bf6+=) 28...N7b6 29.Nc1 Ra8 30.Nb3 (30.Nd3 Nc4 31.e4 fe4 32.Ne4 h6+=) 30...Nc4 31.Ra1 Ra1 32.Ba1 Kf7 33.Ne2 Ke8 34.g4 (34.Kf1 Kd7–/+) 34...g6 (34...fg4 35.e4 Nf6 36.e5–/+) 35.Kg2 Kd7 36.Nec1 Kc6 37.Nd3 Kb5 38.Ndc5 Nc7 (38...e5 39.Kf1–/+) 39.Kf3 Na5 40.Bb2? (better is 40.Na5!? Ka5 41.Nd3–/+) 40...Nb3–+ 41.Nb3 Kc4 42.Na5 (42.Nc1 Nb5–+) 42...Kd3 43.Nc6 Bf8 44.Nb4?? (44.Ba1–+) 44...Bb4 45.d5 (45.Kf4 Kc2 46.Ba1 Kb1–+) 45...Nd5 46.gf5 (46.h4 Bc3 47.Bc1 e5–+) 46...gf5 0–1. Ovcharenko,Leonid – Pavlovskiy,Mikhail, 2006. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 Be7 5.e3 0–0 6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6)

10.Be2 dc4 11.Bc4 cb5 12.Bb5 Qa5 13.Nc3= Bb4 (13...Bd7 14.Qb1=) 14.Be2 b6 (14...e5 15.0–0=) 15.0–0+= Bb7 (15...Nbd7 16.Qb3+=) 16.Bb2 Rd8 17.Qc2 Nc6 (17...Qf5 18.Qb3 Ba5 19.d4+=) 18.Nb5+– Bd2? (better 18...Qa8!?+–) 19.Rd1 (better 19.Ra1 Qb4 20.Rd1 Be3 21.Rd8 Nd8 22.fe3 Bf3 23.gf3+–) 19...Nb4?? (better 19...Rd5 20.Nd2 Rb5 21.Bb5 Qb5+–) 20.Qc7 Qa8 21.Nd2 Bg2 (21...Rd7 22.Qg3 Qd8+–) 22.Qg3 Bc6 (22...Kh8 23.Qg2 Qg2 24.Kg2 Nc6+–) 23.Bf6 (23.Bf6 g6 24.Qh4+–) 1–0. Pierre – Cleary, internet, 2020.

10.Be2 dc4 11.Bc4 cb5 12.Bb5 Bd7 13.Be2 Qa5 (13...Bc6 14.0–0=) 14.Bc3 Qa2 (14...Qf5 15.0–0=) 15.0–0 Rc8 16.Be5 (16.Bf6 Bf6 17.d4 b5=) 16...Nc6 (16...Bc6 17.Nc3 Qa5 18.Qa1 Qa1 19.Ra1=) 17.Nc3 Qa5 18.Bf6 Bf6 19.Ne4 Be7 20.d4 Qa2 (20...Nb4 21.Ne5 Ba4 22.Qa1=) 21.Nc5 Be8 22.Nb7 Qa7 23.Nc5 Bc5 24.dc5 Qc5 25.Qb1 (25.Qd2 Rd8 26.Qb2 Rb8=) 25...Rb8 (25...Nb4 26.e4=) ½–½. Sopermi (2095) – Bigpersio (2325), ajedrez21.com, 2001.

10.Be5 Nbd7=+ 11.Bb2 Qa5 (11...dc4 12.Bc4 Nb6 13.Be2=+) 12.Be2 (12.cd5 cd5 13.Be2 Bd6=) 12...dc4=+ 13.bc6 bc6 14.Bc4 Ba6 15.Bc3 Qb6 16.Ba6 Qa6 17.d3 Nc5 18.Ne5 Rd8 19.Bd4 (19.d4!?=+) 19...Nfd7–/+ 20.Nc4 e5! 21.Bc5 (21.Ne5 Ne5) 21...Nc5 (21...Bc5?! 22.0–0=) 22.0–0 e4 (22...Nd3 23.Nbd2–/+) 23.Nbd2 ed3 24.Qf3 Bf6 25.Rb1 (25.Rc1 Qa4–/+) 25...Na4 26.g4 (26.Rb3 Nc3 27.Ra3 Qc8–/+) 26...Nc3 (26...c5 27.Rb7 Qe6 28.Rc7–/+) 27.Rb6–/+ Qa1 28.Kg2 c5 29.Rc6 (29.Rf6 gf6 30.Qf6 Qa8 31.f3 Nd5 32.Qg5 Kf8 33.Qh6 Ke8 34.Nd6 Rd6 35.Qd6 Ne3 36.Kf2 Qd5 37.Qd5 Nd5+=) 29...Be7–+ 30.Rc7 Nd5 31.Rb7 Qa8 (31...Qa6 32.Rb3 Nb4 33.Ra3–+) 32.Nd6 Rd6 33.Re7 f6 34.Re4 Nb6 35.Qf4 Re6 36.Kf3 Na4 37.Qf5 Re5 38.Qd7 Nb2 39.Kf4 0–1. Machete (2220) – StillCom (2225), ICC, 2003.

10.Be5 Nbd7 11.Nc3 Ne4 12.Be2 (12.bc6!? Ne5 13.Ne5 Nc3 14.dc3–/+) 12...Ne5–/+ 13.Ne5 Nc3 14.dc3 Bf6 15.f4 Be5 16.fe5 Qh4 (16...Qg5 17.cd5 ed5 18.Kf2–+) 17.g3–/+ Qe4 18.Kf2 (18.Rf1 c5–/+) 18...dc4 (18...f6!? 19.Qc1 fe5 20.Kg1 dc4 21.b6–+) 19.bc6–/+ Qc6 20.Bf3 Qc7 21.Qd6 Qa5 22.Qb4 Qe5 23.Qc4 b5 24.Qd4 (24.Qd3 Qf6–/+) 24...Qc7 25.Rd1 Bb7?? (25...e5 26.Qb4–/+) 26.Qd7 (better 26.Qa7 Bf3 27.Qc7 Bd1 28.Qd7+–) 26...Qd7–/+ 27.Rd7 Bf3 28.Kf3 Rc8 29.Rb7 f6 30.Rb5 Rc3 31.Rb7 h5 32.h3 g5 (32...Kh7 33.Ke4–/+) 33.Re7 g4 34.hg4 hg4 35.Kf4 e5 36.Ke4 Rc1 37.Kf5 Kf8 38.Kf6 Rf1 39.Ke6 e4 40.Kd6 Rd1 41.Ke6 Rf1 42.Kd6 Rf3 43.Re4 Rg3 44.Ke5 ½–½. Fernandez Gilbert,Mario (1825) – Gallego Terris,Rafael (2020), 1st Obert Primavera La Lira, 2008.

9.Ba1 Nbd7

10.Qc2 c5 11.d3 Qc7 12.Be2 b6 13.0–0 Bb7 14.Nbd2 Ra8 15.Bc3 Ne8 16.Qb2 f6 17.Ra1 Ra1 18.Qa1 Nd6 19.Ne1 e5 20.cd5 Bd5 21.Qa4 g6 22.Bf3 Bf3 23.Nef3 Nf8 24.Nc4 Ne6 25.g4 Kg7 26.Nd6 Qd6 27.Qe4 Qd7 28.g5 Ng5 (28...fg5? 29.Ne5 (29.Be5?! Kf7+=) 29...Qc8 30.Ng6 Bf6 31.Ne7+–; 28...Qb5 29.Qb7 Kf8 30.gf6 Bf6 31.Be5= (worse is 31.Ne5 Be5 32.Be5 Qb1 33.Kg2 Qd3–/+)) 29.Ng5 fg5 30.Qe5 Kf7 31.Qg7 Ke8 32.Qg8 Bf8 33.Qc4 Qf5 34.Kf1 g4 ½–½. Nemec,Zdenek (1910) – Fernandez Ponce,Luis Miguel (1995), ZI–2010–0–00799, 2010.

10.Qc2 c6 11.Be2 cb5 12.cb5 Bd6 13.0–0 e5 14.d3 Qe7 15.Nbd2 (15.Bc3 Nb6=) 15...Nb6 16.Qc3 Re8 17.Qa5 Nbd7 18.Rc1 e4 19.de4 de4 20.Nd4 Qe5 21.g3 Qg5 22.Nc4 Bb8 23.Qa8 h5 (better is 23...Rf8!?=) 24.Nd6!+/– Bd6 25.Rc8 Rc8 26.Qc8 Kh7 27.Qb7 h4 28.Kg2 Ne5 29.Qa6 Bc5 30.Qc8 Nfd7 31.Nc6+– h3 32.Kh3?? Qf5= 33.g4 Qf2 34.Be5 Ne5?? 35.Ne5+– Qe3 36.Bf3! Qh6 37.Kg3 Bf2 38.Kf2 Qh2 1–0. Grunberg,M (2460) – Dumitrache,D (2505), Supercom Cup, Bucharest ROM, 2002. (=1.Nf3 d5 2.b4 Nf6 3.e3 e6 4.b5 a6 5.c4 Be7 6.Bb2 0–0 7.a4 ab5 8.ab5 Ra1 9.Ba1 Nbd7)

10.Nc3 Nb6 11.Qb3 Ne4 12.cd5 (12.d3 dc4 13.dc4 Nc5=) 12...ed5 13.Be2 Bg4 14.d3 Bf3 15.Bf3 Qa8 16.Qb1 Ng5 17.Bd5 Bb4 18.Bb3 (18.Qb4 Qa1) 18...Qa5 19.Qb2 Rd8 (19...Qb5 20.0–0 Qe5 21.Bf7 Nf7 22.Qb4+/–) 20.Ke2+– Ba3 21.Qa2 Bb4 (21...Kf8 22.f4 Ne6 23.Ne4+/–) 22.Qa5 Ba5 23.Bb2 Bb4 (23...Bc3 24.Bc3 Nd5 25.Be5+–) 24.Ra1 Nd7 (24...Bc3 25.Bc3 Ra8 26.Ra8 Na8 27.Bd5+–) 25.Ra7 Bc3 26.Bc3 Nc5 27.Bc2 f6 (27...Rb8 28.h4 Nge6 29.d4+–) 28.Bb4 Nce6 (28...b6 29.Bc5 bc5 30.Rc7+–) 29.Bb3 (< 29.Rb7 Kh8+–) 29...Kh8 30.h4 Re8 31.Kd2 Nd8 32.hg5 h5 (32...fg5 33.Ba5 b6 34.Bc3+–) 33.g6 f5 (33...c5 34.Bc5 Re5 35.Ra8+–) 34.Ra8 f4 35.Bf7 fe3 36.fe3 c5 37.Be8 c4 38.Rd8 c3 39.Kc3 Kg8 40.Bc6 1–0. mtr – gnu, internet, 2006.

10.Nc3 Nb6 11.d3 Bb4 12.Be2 dc4 (12...Qe7 13.0–0=) 13.dc4 Qd1 (13...Qe7 14.0–0=) 14.Kd1 Ng4 (14...Re8 15.Ne5=) 15.Rf1+= Bd7 (15...Re8 16.h3 Nf6 17.Na2+=) 16.h3 Ra8 17.Bb2 Nf6 18.Kc2 h5 (18...Bd6 19.e4 e5 20.Bd3+=) 19.Ne5 (19.Rd1 Bd6+=) 19...Be8 (19...Bd6 20.Nd7 Nfd7 21.Ne4+=) 20.Kb3 Bd6 (20...Bc3 21.Bc3 (< 21.Kc3 Ne4 22.Kd3 Nc5 23.Kc3 f6=+) 21...Ne4 22.Bh5+/–) 21.Nd3+/– Be7 (21...Nbd7 22.Bf3+/–) 22.e4 h4 23.e5 Nh7 24.Ra1 Ra1 25.Ba1 Nc8 26.c5 Na7 27.Kc4 Ng5 28.f4+– Nh7 29.Bf3 b6 30.c6 Nf8 31.Bb2+– Nc8 32.Ne4 Ng6 33.Bh5 Kh7 34.Bg4 Na7 35.f5 ef5 36.Bf5 f6 37.Nc3 fe5 38.Nd5 e4 39.Ne7 Bf7 40.Kb4 ed3 41.Bd3 Be8 42.Bc1 Nc8 43.Nc8 Kh8 44.Bg5 1–0. orane – DEL, caissa.com, 2006.

10.Nc3 Nc5 11.d3 (11.d4 Ncd7 12.c5=) 11...e5 (better is 11...dc4!? 12.dc4 Bd6=+) 12.Ne5+= Be6 13.Be2 dc4 14.Nc4 Bc4 (14...Re8 15.0–0+=) 15.dc4+/– Qd1 16.Nd1 Ra8 17.Bb2 Ra2 18.g3 Nfe4 19.h4 Nd6 (19...Nb3 20.h5+/–) 20.Rh3 h5 21.f3 Ra4 (21...Nf5!? 22.Be5 Bd6 23.Bd6 Nd6+/–) 22.Nc3+– Rb4 23.Ba3 Rc4 24.Nd5 Bf8 25.Bc4 (< 25.Nc7 Rc3 26.Bb2 Re3+/–) 25...Nc4 26.Bc5 Bc5 27.e4 c6 28.bc6 bc6 29.Nf4 Ne5 30.Ke2 Bd4 (30...g6 31.Rh1+–) 31.Nh5 c5 32.Nf4 c4 33.Rh1 Kh7 (33...Bb2 34.Rb1 c3 35.Nd3+–) 34.Rc1 g6 (34...Kg8 35.Nd5 g5 36.f4+–) 35.Nd5 f5 36.f4 Bb2 (36...Ng4 37.Rc4 Bf2 38.Rc7 Kh8 39.Kf3+–) 37.Rc2 Nd3 38.ef5 Bg7 39.fg6 Kg6 40.Rc4 Nb2 41.Rc7 Kh6 (41...Kh7 42.g4+–) 42.g4 Kh7 43.h5 Kh8 44.g5 Bd4 45.g6 Nc4 46.Rh7 Kg8 47.Rf7 Kh8 48.Ne7 Bg7 49.h6! Bh6 50.Rh7# 1–0. mtr – gnu, internet, 2006.

10.d4 Ne4 11.Qc2 Bb4 12.Bc3 Nc3 13.Nc3 c5 14.bc6 Qa5 15.cd7 Bc3 16.Ke2 –/+.

10.d4 Ne4 11.Bc3 Ndf6 12.Ne5 Nc3 13.Nc3 Bb4 14.Qb3 Qe7 15.c5 Bc3 16.Qc3 =.

10.d4 Ne4 11.Bd3 Bb4 12.Nfd2 Qg5 13.0–0 Ndf6 14.Be4 de4 15.Qc2 Bd6 16.h3 +=.

10.cd5 Nd5 11.Be2 N7f6 (11...Re8 12.0–0 Bd6 13.Nc3 N7f6 14.d4 Bd7 15.Ne5=) 12.0–0 Ne8 (12...Bd7 13.Bf6 Bf6 14.d4 c6 15.bc6=) 13.Nc3 (13.Be5 f6 14.Bg3 Nd6 15.Nc3=) 13...Bf6 (13...Nef6 14.Nd5 Nd5 15.Be5=) 14.Nd5+= Qd5 (14...ed5 15.Qc2+=) 15.Bf6 (15.Qc2 Ba1 16.Ra1 Nd6+/–) 15...Nf6 16.Qc2 Bd7 17.Rb1 Qd6 (17...c6 18.b6+=) 18.d4+= Nd5 (18...Rc8 19.Rc1+=) 19.Ne5 (19.Ra1 Rd8+/–) 19...Be8 (19...Ra8 20.Bd3 h6 21.Bh7 Kf8 22.Be4+/–) 20.Bf3 f6 21.Nc4 Qe7 22.Na5 Bg6 23.e4 b6 24.Nc6 Qd6 25.g3 Ne7+= 26.Ne7 Qe7 27.Rc1 Rc8 28.h4 Qa3 29.Kg2 Qb4 30.Qc6+/– Qe7 31.h5 Bf7 32.e5 Qe8 33.Qb7 Qd8 34.h6 Be8 35.hg7 Kg7 36.ef6+– Kf6 37.Qe4 Bg6? 38.Qe5 Kf7 39.d5 Bf5 40.Rc6 Qf6 41.de6 Be6 42.Re6! (42...Qe5 43.Re5+–; 42.Rc7?! Rc7 43.Qc7 Kg8+–) 1–0. Bulcourf,Carlos – Spata,Rafael, San Isidro VALLE (3), 1993.

10.d4 c5

11.dc5 Bc5 12.Bd3 Bb4 13.Nbd2 Nc5 14.Qc2 Nfe4 15.0–0 Nd3 16.Qd3 =+.

11.dc5 Nc5 12.Be2 b6 13.0–0 Bb7 14.Qc2 Qc7 15.Be5 Bd6 16.Bd6 =.

11.bc6 bc6 12.Nbd2 Ba6 13.Be2 Qc7 14.0–0 Rb8 15.Bc3 c5 16.dc5 =.

11.bc6 bc6 12.Nbd2 c5 13.cd5 Nd5 14.Be2 Qc7 15.0–0 Rd8 16.Qc2 =.

11.bc6 bc6 12.Nbd2 c5 13.cd5 Nd5 14.e4 Nf4 15.Qc2 Bb7 16.g3 =.

11.Nbd2 Qa5 12.cd5 ed5 13.dc5 Nc5 14.Bd4 Bf5 15.Qa1 Nd3 16.Bd3 –/+.

11.Nbd2 b6 12.Bd3 cd4 13.Bd4 Bb7 14.0–0 Qc7 15.cd5= e5 16.Bb2 =.

11.Nbd2 Nb6 12.cd5 Nbd5 13.Bc4 Qc7 14.0–0 Rd8 15.Qb1 b6 16.dc5 =.

11.Nbd2 cd4 12.Bd4 Bd6 13.cd5 e5 14.Bb2 Nd5 15.Be2 f6 16.0–0 =.

11.Nbd2 Re8 12.cd5 ed5 13.dc5 Nc5 14.Be2 b6 15.0–0 Bd6 16.Nb3 =.

11.cd5 Nd5 12.Be2 Qa5 13.Nbd2 cd4 14.Bd4 Nc3 15.Bc3= Qc3 16.0–0 =.

7.a4 dc4

8.Bc4 c6 9.Nc3+= cb5 (9...Qc7 10.Be2+=) 10.ab5+– Qc7 (10...Nbd7 11.0–0+–) 11.Qb3 (11.Be2 a5+–) 11...Nbd7+= 12.0–0 a5 (12...Nc5 13.Qc2+=) 13.d4 (13.Rfc1 b6+–) 13...Nb6 (13...b6!?+=) 14.Bd3+– Nbd5 15.Rfc1 Qb6 (15...Qd8 16.Ne5+–) 16.Na4 Qd8 17.Nc5 (17.Ne5!?+–) 17...b6+= 18.Na6 Ba6 (18...Bb7 19.Ne5+=) 19.ba6+– Nb4 20.Ne5 Bd6 21.Nc6 (21.Be2 Be5 22.de5 Nd7+=) 21...Nc6+= 22.Rc6 Nd5 23.Bc3 (23.Rcc1 Nb4+=) 23...Qd7 (23...Bb4 24.Be1=) 24.Bb5+– Qe7 (24...Nc7!? 25.Rb6 Nb5 26.Rb5 Ra6 27.Raa5 Rc6+–) 25.e4 Nc3 26.Qc3 Bb4 (26...e5 27.d5 Bc5 28.Qd3+–) 27.Qd3 (27.Qc4 Qd8+–) 27...Rfd8 (27...Rfb8 28.Rac1+–) 28.Rb6 Bc5 (28...Qf6 29.e5 Qf4 30.g3+–) 29.Rb7 (29.dc5?! Rd3 30.Bd3 Qc5=) 29...Qf6 30.e5 Qh4?? (30...Qf4 31.g3 Qd4 32.Qd4 Bd4 (worse 32...Rd4 33.Ra5 Rd2 34.a7 Bf2 35.Kf1 Ba7 36.Raa7+–) 33.Ra5 Ra7+–) 31.Qf3 (31.Qf3 Bf8 32.Qf7 Kh8 33.Ra4+– (33.Qe6?! Qd4 34.Rf1 Rd5+–); 31.dc5?! Rd3 32.Bd3 g6+–) 1–0. GuestHQLF – GuestVWLG, freechess.org, 2020.

8.Bc4 ab5 9.ab5 Ra1

10.Ba1 Bb4 11.0–0 Nbd7 12.Qc2 Nb6 13.Bf6 gf6 14.d4 Nc4 15.Qc4 Ba5 16.Nbd2 Bd7 17.Rb1 c6 18.b6 e5 19.Qc5 Bd2 20.Nd2 ed4 21.ed4 (21.Qd4?! Bf5 22.Qd8 Rd8=) 21...Re8 22.Ra1 Re2 23.Nf1 Be6 24.Ra7 Qb8 25.Qc3 Qf4 26.f3 Qg5 27.Ng3 (better is 27.Ra8 Kg7 28.Ng3+=) 27...Rd2?? (27...Re3 28.Qd2 Rb3 29.Qg5 fg5 30.Rb7 Rb1 31.Kf2 Rb2 32.Kf1+–) 28.Rb7?? (better is 28.Ra1 Ra2 29.Ra2 Ba2 30.Ne4+–) 28...Rd1–/+ 29.Kf2 Rd2 30.Ne2 Re2 31.Ke2 Qg2 32.Ke3 Qg1 33.Kd2 Qh2?? (33...Qg2 34.Kc1 Qf1 35.Kc2 Qe2 36.Qd2 Qc4 37.Kb2 Qa2 38.Kc1 Qa1 39.Kc2 Qa4 40.Kd3 Qa6 41.Ke3 Qb7 42.Qa5–+) 34.Kc1?? (34.Kd3 Qf2+–) 34...Qg1?? (34...h5 35.Ra7 Kg7+–) 35.Kb2 Qf2 36.Ka3 Qa2 37.Kb4 Qd5 38.Ra7 Qb5 39.Ka3 Qb6 40.Ra8 Kg7 41.Qb4 Qb4 42.Kb4 h5 43.Ra1 Bd5 44.Rh1 Kg6 45.Rh3 Kg5 46.Kc5 f5 47.Kd6 Kf4 48.Rh5 Bf3 49.Rh8 Bd5 0–1. marekt – strongplayer26, ChessWorld.net, 2003.

10.Ba1 b6 11.0–0 Bb7 12.d4 (12.Qe2 Qd6=) 12...Nbd7 13.Nbd2 Qa8 (13...c6 14.bc6 Bc6 15.Qb1=) 14.Bc3 Ne4 (14...Bd5 15.Qe2=) 15.Ne4 Be4 16.Be2 (16.Qe2 c6=) 16...Qd5 17.Qd2 (17.Bd3 Nf6=) 17...Bf3 (17...Ra8 18.Ra1=+) 18.Bf3= Qb5 19.Ra1 (19.Qc2 Nf6=) 19...Nf6 (19...c5 20.Qc2=) 20.Ra7 (20.Qc2 Nd5=) 20...Qb1 21.Qe1 Qe1 22.Be1 Bd6 23.e4 (23.Bc6 Nd5=) 23...e5=+ 24.Bc3 ed4 25.Bd4 Re8 26.e5 (26.Bf6!? gf6 27.g3=+) 26...Be5–/+ 27.Be5 Re5 28.Kf1 Re7 29.Ra8 Re8 30.Ra7 Re7 (30...c5 31.Rb7–/+) 31.Ra8 Ne8 32.Bc6 Kf8 33.Rc8 f6 34.Be8 Re8 35.Rc7 Re6 (35...Re7 36.Rc8 Kf7 37.Rb8–/+) 36.Rb7 h5 37.Rc7 (37.f4 f5–/+) 37...Kg8 (37...Re7 38.Rc6 Rb7 39.Ke2–/+) 38.Rc4 (38.f4 Kh7–/+) 38...Kf7 39.h4 Kg6 (39...b5 40.Rb4 Re5 41.f3–/+) 40.g4 (40.Rb4 Kh6–/+) 40...b5 41.Rb4 Re5 42.Kg2 (42.gh5 Kh5 43.f3 Kg6–/+) 42...Kf7 (42...hg4 43.Rg4 Kf7 44.Kf3–/+) 43.Kg3 (43.f4 Rd5 44.g5 Ke7–/+) 43...Ke6 44.gh5 (44.f4 Rd5–/+) 44...Rh5 45.Rg4 (45.Kf3 Kd6–/+) 45...g5–+ 46.Rb4 gh4 47.Kg4 Rc5 (47...Rd5 48.Kh4 Kd6 49.Rb1–+) 48.f4 Kd6 49.Kh4 Kc6 (49...Rd5 50.Rb1–+) 50.Kg4 f5 (50...Rc4 51.Rb2–+) 51.Kg5–/+ Kb6 52.Rb1 Ka5 53.Re1? (better 53.Ra1 Kb4 54.Re1–/+) 53...b4–+ 54.Re5 (54.Ra1 Kb5–+) 54...Kb5 (better 54...Rb5–+) 55.Kf5 (55.Re1–+) 55...b3 56.Kg6 (56.Kf6 Re5 57.fe5 b2–+) 56...Re5 57.fe5 b2 58.e6 b1Q 59.Kf7 (59.Kf6 Kc6–+) 59…Qf5 (59...Qf5 60.Kg7 Qe6 61.Kh7 Kc5 62.Kg7 Kd5 63.Kh7 Qf7 64.Kh6 Ke4 65.Kg5 Qg7 66.Kh5 Kf5 67.Kh4 Qg4) 0–1. Wister,Finn Arild – Stabbetorp,Hans, Landsturneringen NM i Sjakk, 2013.

10.Ba1 b6 11.0–0 Nbd7 12.d4 1–0. Van Esbroeck,Dirk – Castellano,Antonio Jr, SN–2010–0–00268, 2010.

10.Ba1 c6 11.0–0 cb5 12.Bb5 Bd7 13.Nc3 Bb5 14.Nb5 Qd3 15.Qb1 Qb1 16.Rb1 Nbd7 17.Kf1 Ra8 18.Bd4 b6 19.Ke2 h6 20.Nc3 Exerts pressure on the isolated pawn 20...Ra6 21.Ne5 Ne5 22.Be5 Nd7 23.Bc7 Kf8 (23...f5 24.d4=) 24.d4+= Ke8 25.Rb2 Bd8 26.Nb5 Ke7 27.Bd6 Kf6 28.Rc2 Ra5 29.Nc3 Kg6 30.Bb4 (30.e4 f5+=) 30...Ra8 31.Nb5 Nf6 32.f3 Nd5 33.Bd2 Ne7 (33...Bg5 34.f4 Be7 35.e4+=) 34.e4 h5 35.Kd3 Ra1 36.Bf4 Rd1 37.Rd2 Rb1 38.Nc3 White plans d5 38...Ra1 39.Rb2 Nc6 (39...h4 40.Rb5+=) 40.d5+/– ed5 41.ed5 Ne7 42.Kc4 Ra8 (42...Kf5 43.Be3 Ng6 44.f4+=) 43.Rb5 h4 (43...Nf5 44.Rb1+/–) 44.g4 Ra1 (44...hg3 45.hg3 Nf5 46.d6+/–) 45.d6 Nc8 (45...Nc6 46.Be3+/–) 46.d7 (46.Rd5 Na7+/–) 46...Ne7 47.Bd6 (47.Rg5 Kf6 48.Ne4 Ke6 49.Rg7 Nc6+/–) 47...Re1 (47...Ng8!? 48.Be5 Ra7+=) 48.Rh5+– Re6 (48...Nc6 49.Nd5 f6 50.Nf4 (50.Rh4?! Rd1 51.Rh5 Kf7=) 50...Kf7 51.Rh8 (51.Rh4?! Rd1 52.Nd3 Ke6=) 51...Rc1 52.Kb5+–) 49.Nb5 Re1 50.Rh8 (50.Nd4 Rc1 51.Kb5 Rb1 52.Ka6 Rd1 53.Be7 Be7+–) 50...Rc1 51.Kd3 Nc6 52.f4 (52.Ke4 Re1 53.Kd5 Rc1+–) 52...Rd1 (52...f5!? 53.g5 Rd1 54.Kc3 Rc1 55.Kb3 Kf7+/–) 53.Ke4+– f5?? (better is 53...Kf6 54.Re8 Kg6+–) 54.gf5 Kf7 (54...Kf6 55.Rf8) 55.Rf8 1–0. Paichadze,Luka – Javakhishvili,Lela, Georgian Club Championship, 2016.

10.Ba1 c6 11.Nc3 Bb4 12.0–0 Bc3 (12...Bd7 13.Qb3 Qe7 14.d3=) 13.Bc3+= cb5 (13...Bd7 14.Qb1+=) 14.Bb5 Bd7 15.Be2 Nc6 (15...Bc6 16.d3+=) 16.Qa1 (better 16.Qb1+–) 16...Nd5? (better 16...Qe7!?+–) 17.Bg7+– Re8 18.Rb1 f6 (18...Bc8 19.e4 Nf4 20.Bb5+–) 19.Bh6 Kf7 (19...Ndb4 20.e4 Qe7 21.d4+–) 20.e4 (worse 20.Rb7 Rg8+–) 20...Nde7 (20...Ndb4 21.Nh4+–) 21.Rb7 Qc8 (21...Rg8 22.Be3+–) 22.Qb2 Na5 (22...e5 23.Nh4 Nd4 24.Bh5 Ng6 25.Nf5+–) 23.Ne5! fe5 24.Qe5 Nb7 (24...Qc1 25.Bf1 Rg8 26.Rd7 Qd1 27.Qa5 Qg4+–) 25.Qg7 1–0. Janek – Magse, internet free game, 2017.

10.Ba1 Nbd7 11.0–0 b6 12.Nd4 Nc5 (better is 12...Bb7!?=) 13.Nc6+= Qd7 14.d4 Nb7 15.Bb2 Bd6 16.Nd2 Nd8 (16...Na5!? 17.Na5 ba5+=) 17.e4 Bf4 18.e5 Nd5 (18...Nc6? 19.bc6 (19.ef6?! Na5+/–) 19...Qc6 20.ef6+–) 19.Ba3 (better is 19.Nb8 Qe7 20.Nf3+/–) 19...Re8? (better is 19...Nc6 20.bc6 Qc6 21.Bf8 Kf8 22.Bd5 Qd5+/–) 20.Nb8+– Nc3? (20...Ne3 21.Nd7 Nd1 22.Nf6 gf6+–) 21.Qb3 (21.Nd7?! Nd1 22.Nf6 gf6+–) 21...Qd4 22.Nf3 Qe4 (22...Bh2 23.Kh1 Qe4 24.Qc3+– (24.Nh2?! Nd5+–)) 23.Qc3 Bb7 24.Re1 Qg6 25.Bd3 (better is 25.g3!? Qg4 26.Be2 Kh8+–) 25...Qh6 (25...f5 26.Nc6+–) 26.Be4 (26.Be4 f6 27.Nd7 Be4 28.Re4 fe5 29.Nde5 Be5 30.Ne5+–) 1–0. Abreu Suarez,Isauro (2020) – Jimenez Arteaga,Angel (2035), 2012.

7.a4 c6

8.Nc3 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.Be2 Nb6 12.Ne5 Nfd7 13.Nd7 Bd7 14.bc6 bc6 15.Na4 f6 16.Nb6 Qb6 17.0–0 Rb8 18.Bc3 c5 19.Bd3 Qd6 20.Rb1 Bd8 21.Rb8 Qb8 22.Qa2 Bc6 23.Qc2 h6 24.cd5 ed5 25.Bg6 Qd6 26.d4 c4 27.Qa2 Be7 28.g3 Qa3 29.Qc2 Bd7 30.e4 Ba4 31.Qd2 Bc6 ½–½. Schuehler – Fechner, 1973.

8.Nc3 Nbd7 9.d4 ab5 10.ab5 Ra1 11.Qa1 Bb4 12.Bd3 dc4 13.Bc4 Nb6 14.Be2 Bd7 15.bc6 Bc6 16.0–0 Nbd7 17.Rd1 Qc7 18.h3 Rc8 19.Rc1 Qb8 20.Qb1 h6 ½–½. Berlacki – Peters, Bad Woerishofen 1992.

8.Be2 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qa5 13.Nc3 Bd7 14.Qb1 Qb4 15.0–0 Nc6 16.Bc6 bc6 17.Qd3 Qd6 18.Qc2 c5 19.Rb1 Bc6 20.Nb5 Be4 21.Qe4 Ne4 22.Nd6 Nd6 23.Be5 Nc4 24.Rb7 Ne5 25.Ne5 Bd6 26.Nc4 Bb8 27.f4 g6 28.g4 Rd8 29.g5 Bd6 30.Kf2 Kf8 31.Ke2 Bb8 32.Rb5 Bd6 33.h4 Kg7 34.Rb6 Be7 35.Ne5 Bd6 36.Nc4 Be7 37.Rb7 Bd6 38.d3 Bb8 39.Kd2 Re8 40.Rb5 e5 41.fe5 Be5 42.Ne5 Re5 43.d4 Re4 44.dc5 Kf8 45.Kd3 Rh4 46.c6 Ke7 47.Rd5 Ra4 48.Rd7 Ke6 49.Rd8 Ra7 50.Kd4 Ke7 51.Rd5 Ra4 52.Ke5 Ra7 53.Rb5 Ra3 54.Rb7 Kd8 55.e4 Rc3 56.Kd5 1–0. Bulcourf – Incutto, Olivos 1993.

6.c4 b6

7.a4 Bb7 8.Nc3 a6 9.cd5 Nd5 10.Nd5 Bd5 11.Be2 ab5 (11...c6 12.0–0=) 12.ab5= Ra1 13.Qa1 f6 14.0–0 Bf3 15.Bf3 Qd2 16.Qa2 Kh8 (16...Qd7 17.Bg4 f5 18.Be2=) 17.Rd1 (better 17.Qe6!? Bd6 18.Rb1+–) 17...Qb4= 18.Qe6 Bd6 19.Qa2 Qb5 20.Bd4 Nd7 21.Rb1 (21.Qc2 Rd8=) 21...Qg5 22.Qe6 Ne5 23.Be5 (23.Be4 Qh5=+) 23...Qe5 24.Qe5 Be5 25.Bc6 Rd8 26.f4 Bd6 27.Kf2 Bc5 28.Ke2 g6 29.Ra1 f5 (29...Rd6 30.Ba8–/+) 30.Ra7=+ Bd6 31.Ra1 (31.Kf3 h5=+) 31...Kg7 32.h3 Kf6 33.g4 h6 34.Ra2 Bb4 35.Ra7 Rd2 36.Kf3 Bd6 37.Ra8 Rc2 38.Bd7 Rh2 39.gf5? (better 39.Kg3!? Rd2 40.gf5 gf5 41.Rh8–/+) 39...Rh3–+ (39...gf5?! 40.Kg3 Rd2 41.Rh8–/+) 40.Ke4 gf5 (40...Bc5!? 41.fg6 Re3 42.Kd5 Kg6 43.f5 Kf6 44.Rh8 Rd3 45.Kc6–+) 41.Bf5–/+ Rh2 (41...Re3 42.Ke3 Kf5 43.Kf3–/+) 42.Rh8 (42.Bd7 h5–/+) 42…b5 0–1. GuestPLLY – PaulFang, freechess.org, 2018.

7.Qc2= a6 8.a4 Bb7 9.Be2 dc4 10.Bc4 a5 (10...Bd6 11.d3=+) 11.Nc3 Bf3 12.gf3 c6 13.Rg1 Qd6 (better is 13...Nbd7!?=) 14.Ne4+/– Qd8 15.Ng5 Qd6?? (better is 15...g6 16.Be6! Qd6+/–) 16.Bf6+– g6 17.Be7 Qe7 18.h4 (18.Qe4 cb5 19.Bb5 Na6+–) 18...Nd7 (18...Rc8 19.h5 cb5 20.hg6 hg6 21.Qe4+–) 19.h5 (19.bc6!? Nf6+–) 19...e5 (19...cb5 20.hg6 bc4+–) 20.hg6 (20...e4 21.Bf7 Kh8 22.Rh1 Rf7 23.Nf7 Kg7 24.Qc6 hg6 25.Qa8+–) 1–0. Mroz,Antoni – Osowicki,Leszek, corr Poland, 1985.

7.Qc2 a6 8.cd5 ed5 9.Be5 =+.

7.Qc2= a6 8.cd5 Nd5 9.Nc3 Nb4 =+.

7.Qc2 h6 8.Be2 (8.cd5 ed5 9.Be5 Bd6=) 8...Nbd7 (8...a6 9.cd5 ed5 10.Be5=) 9.d4 (9.cd5 Nd5 10.Qc6 Bb7 11.Qb7 Nc5 12.Qa8 Qa8–/+) 9...Bb7 10.0–0 a5 (10...c6 11.Ba3=) 11.a4 (11.Ba3 c5 12.bc6 Bc6 13.Be7 Qe7 14.cd5 Bd5+=) 11...Rc8 12.Nbd2 (12.Ba3 c5+=) 12...Ne4 (12...dc4 13.Nc4 c6 14.Rfc1=) 13.Ne4 de4 14.Nd2 f5 15.f3 Nf6 16.h3 White intends c5 (16.Rad1 ef3 17.Bf3 Bf3 18.Nf3 c6+=) 16...Bd6 17.f4 c6 18.c5 (better is 18.Rad1!?=) 18...cb5+= 19.Bb5 bc5 20.Qb3 (20.Nc4!?–/+) 20...Bd5–+ 21.Bc4 Rb8 22.Qc2 Bc4 23.Nc4 Nd5 24.Nd6 (24.Rad1 Rc8–/+) 24...Qd6 (better is 24...Ne3!? 25.Qe2 Nf1 (worse is 25...Qd6 26.Qe3 Rb2 27.dc5–/+) 26.dc5 Ng3–+) 25.dc5–/+ Qc6 26.Rab1 (26.Bd4 Rfd8+=) 26...Rf7 (26...Ne3 27.Qc3 Rb2 28.Qe3–/+) 27.Rfe1 (27.Bd4 Rfb7+=) 27...Nb4 28.Qc4 Nd3 Attacking the isolated pawn on c5 29.Re2 (29.Be5!? Rc8 30.Re2+=) 29...Rfb7 (29...Nc5 30.Rc1 Rc7 31.Ba3+–) 30.Qd4 Nc5?? (better is 30...Qc5 31.Qc5 Nc5–+) 31.Rc2+= Rc8 32.Rbc1 Qd5?? (better is 32...Qb6=) 33.Rc5+– Rc5 34.Rc5 Qd4 35.Bd4 (worse is 35.ed4 Rb2 36.Ra5 Rd2+=) 35...Rd7 (35...g5 36.Ra5 gf4 37.ef4+–) 36.Ra5 g5 37.Ra8 Kf7 38.Ra7 (38.fg5 hg5 39.a5 Ke7+–) 38...Ke8 39.Rd7 Kd7 40.g3 (40.fg5 hg5 41.Bf6 g4+–) 40...g4 (40...Kd6 41.a5+–) 41.h4 (41.hg4 fg4 42.a5 Kc6+–) 41...h5 42.Kf2 (42.a5 Kc8+–) 42...Kc6 43.a5 Kb5 44.Bb6 Kc6 45.Ke2 Kb5 46.Kd2 Kc6 47.Kc3 Kb7 (47...Kd7 48.a6 Kc8+–) 48.Kc4 Kc6 49.Kb4 e5 (49...Kd5 50.a6 Kc6 51.Bd4+–) 50.Kc4 (better is 50.fe5 Kb7 51.Kc5 Kb8+–) 50...ef4 51.ef4 (51.gf4?? g3 52.Kd4 g2–+) 51...Kb7 (51...Kd6 52.a6 Kc6 53.a7+–) 52.Kd5 e3 (52...Ka6 53.Ke5 e3 54.Be3+–) 53.Be3 Ka6 54.Ke5 Ka5 55.Kf5 Kb5 56.Kg5 Kc6 57.Kh5 Kd5 58.Kg4 (58.Kg4 Ke6 59.Kg5+–) 1–0. Dopper,Johan – Verkerk,Jan, 1990.

7.Nc3 a5 8.Qc2 dc4 (8...c6 9.d4=) 9.Bc4 Bb7 10.Ke2 (10.d4 c6=) 10...c6 11.Rhg1 (11.Rhc1 cb5 12.Nb5 Nbd7=) 11...Bc5 (11...cb5 12.Nb5 Nbd7 13.d3=+) 12.g4 (12.Ne4 Ne4 13.Qe4 Re8=) 12...cb5=+ 13.Bb5 Nc6 14.a3 Ba6 (14...Rc8!?=+) 15.Ba6= Ra6 16.g5 (16.Nb5 e5 17.Ne5 Ne5 18.Be5 Nd5+=) 16...Nh5 (16...Nd7 17.Nb5 Na7 18.Qc3=) 17.Ne4+= Ne7 18.Nc5 bc5 19.Rg4 g6 (19...Ng6 20.Qc5 Qa8 21.Rc4+–) 20.Qc3 (20.Qc5 f6+–) 20...f6+= 21.Rag1 (21.Qc5 Rc6 22.Qd4 Qc7+=) 21...Nd5 (21...Rb6 22.Ba1+=) 22.Qc5+– fg5 23.Ng5 Nhf6 24.Ne6?? (24.Rh4 Qe8 25.e4+–) 24...Re6–+ 25.Qd4 (25.Rd4 Qa8 26.Qc2 Rb8–+) 25...Qe8 (25...Qb8!? 26.Rh4 Rd8 27.Rg5–+) 26.h4 Qf7 (better 26...Rb6 27.Ba1 Qb5 28.d3 Qb3–+) 27.h5=+ Ng4?? (better 27...Ne7=+) 28.Qh8 1–0. Lupinacci,Nicola – Belaz,Egidio, FICGS, 2010.

7.Nc3 Bb7 8.cd5 Nd5 9.d4 Bb4 10.Rc1 (10.Qc2 a6=) 10...Nd7 (10...a6 11.ba6 Ba6 12.Ba6 Na6 13.0–0=) 11.Be2 N7f6 (11...a6 12.ba6 Ba6 13.0–0=+) 12.0–0 Bd6 13.h3 (13.Nd5 Bd5 14.a3 Bb7=) 13...Qd7 (13...a6 14.a4=) 14.Re1 (14.Ne5 Qe8=) 14...Rad8 (14...a6 15.Ne5 Qd8 16.a4=) 15.Bc4 (15.Ne5 Qe8 16.Nd5 Nd5+=) 15...Bb4 (15...Nc3 16.Bc3 (< 16.Rc3 Bb4–/+) 16...Ne4 17.Bb2=) 16.Ne5+= Qe8 17.f3 (17.Qa4 Ba5+=) 17...Nd7 (17...c5 18.bc6 Bc6 19.Qb3=) 18.Nd3 Bd6 (18...Bc3 19.Bc3 Nc3 20.Rc3+=) 19.Ne4 Be7 20.Qb3 (20.Qa4 Ra8+=) 20...N7f6 (20...c6 21.Nef2 N7f6 22.e4+=) 21.Nf6 Nf6 22.e4 Nh5 23.Ne5 c5 24.bc6 Bc6 25.Nc6 Qc6 26.d5 Bc5 27.Kh1 Qc7 28.e5 ed5 29.Bd5 Nf4 30.Bc4 Qc8 31.Rc2 Qf5 32.e6 Nd5?? 33.Re5+– Qg6 34.ef7 Rf7 35.Bd5 Rd5 36.Rd5 h6 37.Rd7 1–0. katchum (2280) – marmite (2390), net–chess.com, 2003.

7.Nc3 Bb7 8.Be2 c5 9.d4 Nbd7 10.0–0 Rc8 11.Nd2 (11.cd5 Nd5 12.Rc1 Nc3 13.Bc3 Bd5=) 11...cd4=+ 12.ed4 Rc7 (12...Bd6 13.Rc1=+) 13.Bf3 (13.Rc1 dc4 14.Nc4 Qa8=+) 13...Qa8 14.cd5 Nd5 15.Nd5 Bd5 16.Rc1 (16.Qa4 Bg5 17.Rac1 Rfc8 18.Rc7 Rc7 19.Bd5 Qd5=+) 16...Rfc8 (16...Rc1 17.Bc1 Rc8 18.Qa4=+) 17.Rc7 (17.Qa4 Bg5 18.Rc7 Rc7 19.Bd5 Qd5=+ (< 19...ed5 20.Nf3 Bf4 21.Re1=)) 17...Rc7 18.Qb1 (18.Qa4 Bg5 19.Bd5 Qd5=+) 18...Bf3 (18...Bg5 19.Rc1 Rc1 20.Bc1 Bd2 21.Bd5 Qd5 22.Bd2 Qd4 23.Be3–/+) 19.Nf3=+ Qd5 (19...a5 20.Rc1 Rc1 21.Bc1=) 20.Rc1 Rc1 21.Bc1 g5 (21...Bd6 22.Be3=+) 22.h3 (22.Be3 Bf6=) 22...h5 23.Be3 g4 24.hg4 hg4 25.Nh2 Nf6 26.a4 Bd6 (26...g3 27.fg3 Qc4 28.Qa1=+) 27.g3 Kg7 28.Qc2 Kf8 29.Bh6 Kg8 30.Be3 Kg7 31.Qc1 Kg6 32.Qc8= Kg7 33.Qc1 Qf5 34.Qd1 Qe4 35.Qe2 Kg6 36.Nf1 Bb4 37.Qd1 Nd5 38.Qc1 Bc3 39.Bh6 Bd4 40.Qg5 Kh7 41.Ne3? Ne3–+ 42.fe3 Bc3 43.Qf4 Qb1 44.Kg2 Qc2 45.Kg1 Qd1 46.Kh2 Qe2 47.Kg1 Qf3 48.Qf3–/+ gf3 49.Bf8 e5 50.Kf2 e4–+ 51.Bd6 Kg6 52.Bb8 Kf5 53.Ba7 Ba5 54.Bb8 Kg4 55.Bc7? Kh3?? 56.Kf1 Kg4 57.Kf2–+ Kg5 58.Be5 Kg6 59.Bc7? Kf6 60.Bf4 Ke6 61.Bc7 Kd5 62.Kg1 Kc4 63.Kh2 Kd3 64.g4 f2 65.Be5 f1Q 66.Bd4 Be1 67.g5 Ke2 68.g6 Kf3 (69.Bb6 Bg3#) 0–1. Palikarski,Vasil – Tashkov,Rumen (2250), Plovdiv BUL Team Championship, 2003.

7.Nc3 dc4 8.Bc4= a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Nbd7 (11...Bb7 12.e4=) 12.d4 (12.Qa8 Nc5+=) 12...Bb7= 13.0–0 Bf3 14.gf3 Qa8 (14...Bb4 15.f4=) 15.Qd1 (15.Qa8 Ra8 16.Rc1 Bd6+=) 15...Nd5 (15...c5 16.bc6 Qc6 17.Qe2=) 16.e4 (16.Nd5 ed5 17.Bd3 c5+=) 16...Nc3= 17.Bc3 Bf6 18.Qc2 (18.Qb3 Rd8=) 18...Qd8 (18...c5 19.e5 cd4 20.ef6=) 19.Kh1 (19.f4 Nb8+=) 19...Bg5 20.d5 e5 21.Qb2 (21.Ra1 Qf6=) 21...Bf4 22.Rg1 Qh4 23.Rg2 Kh8 (23...Ra8 24.Qc2=+) 24.Qa1 Qh3 25.Qg1? (better 25.Bb4 Rg8 26.Qa3=) 25…Qf3–+ (25...Qf3 26.Bb4 Ra8–+) 0–1. GuestHBSR – GuestQNDK, freechess.org, 2018.

7.Nc3 c6 8.Be2 c5 9.0–0 Bb7 10.d4 Nbd7 11.Qb3 dc4 12.Qc4 Nd5 13.Rfd1 N7f6 14.dc5 Bc5 15.Qb3 Rc8 16.Bc4 Qe7 17.a3 Qc7 18.Rac1?? (better is 18.Nd5 Nd5 19.Rac1+=) 18...Ne3!–+ 19.Ne4 (19.fe3 Be3 Double attack) 19...Nd1 (19...Ne4?! 20.fe3 Nd6 21.Be2–/+) 20.Nf6 gf6 21.Qd1 Qf4 22.Be2 e5 23.Rc4 (23.Rc3 Rfd8 24.Rd3 Rd3 25.Qd3 Kg7–+) 23...Qh6 (better is 23...Bf2!? 24.Kf2 Rc4 25.g3–+) 24.Bc1 Qh5?? (better is 24...Qg7 25.Nh4 Bd4–+) 25.Nh4+– Qg5?? (better is 25...Bf2 26.Kf2 Rc4 27.Bh5 Rh4+–) 26.Bg5 fg5 27.Rg4 f6 28.Qb3 Kh8 29.Nf5 Rc7 30.Nh6 Bd4? 31.Rg3 Rc1 32.Bf1 Kg7 33.Nf5 Kh8 34.h4 Rd8 35.Qf7 Rg8 36.Qf6 (36.Qf6 Rg7 37.Qg7) 1–0. Van Esbroeck,Dirk – Bester,Kazimierz, SN–2009–0–00141, 2009.

7.Nc3 Ne4 8.Ne4 (8.Qc2 Nf6=) 8...de4 9.Nd4 Bf6 10.Qc2 e5?? (10...Bb7 11.Rd1=) 11.Nc6?? (11.Qe4 ed4 12.Bd3+– (12.Qa8?! de3 13.0–0–0 Bb2 14.Kb2 Qd4 15.Kb3 ef2=)) 11...Nc6= 12.bc6 Bf5 13.Be2 (13.g4 Bg4 14.Qe4 Bh5=+) 13...Qd6=+ 14.Qa4 a6 (better 14...Rfd8 15.Rd1 Qe6–/+) 15.Ba3+= Qc5?? (better 15...Qd8 16.Bf8 Qf8+=) 16.Bc5+– (16.Bc5 bc5 17.Qa5+–) 1–0. GuestQSPB – GuestSXND, freechess.org, 2017.

7.d4 a6 8.a4 Bb7 9.Be2 Ne4 (9...dc4 10.Bc4 Bd6 11.0–0=) 10.0–0= dc4 11.Bc4 Bb4 (11...c6 12.Nc3 ab5 13.ab5 Ra1 14.Ba1 Nc3 15.Bc3 cb5 16.Bb5=) 12.Qc2 Ng5 (12...Nd6 13.Be2=) 13.Ne5+= Bd6 14.Ba3 (14.Nd2 Nh3 15.Kh1 ab5 16.ab5 Ra1 17.Ba1+/–) 14...Be5–+ 15.de5 (15.Be6 Bd4! 16.Ra2 Ne6 17.Bf8–+) 15...Nf3! 16.Kh1 (16.gf3 Qg5 A classical mating theme) 16...Qh4 17.h3 Ne1!! 18.Re1 (18.Qh7 Kh7 19.f3 Bf3 20.Rf3 Nf3 21.Bd3 Kh6 22.Nc3–+) 18...Qh3 The nicest combinations are those leading to mate... 0–1. Madonia,Leonardo – Poretti,Ennio, corr Italy, 1984.

7.d4 Bb7 8.Ne5 Nbd7 (8...a6 9.Qf3=+) 9.Nd2 Ne5 10.de5 Nd7 11.Be2 dc4 12.0–0 c6 (12...Nc5 13.Bc4 c6 14.bc6 Bc6 15.Rc1=) 13.Nc4 (13.bc6!? Bc6 14.Nc4=+) 13...cb5=+ 14.Nd6 Bd6 15.Qd6 (15.ed6 Qg5 16.Bf3 Nc5=+) 15...Nc5 (15...Qg5 16.g3 Rfd8 17.Rad1–/+) 16.Bb5 (better is 16.Qd8 Rad8 17.Bb5=+) 16...Qd6?? (16...Qg5 17.e4 Rfd8–+ (17...Ne4 18.Qc7 Nc5 19.Bc6–+; 17...Be4?! 18.f3 Rfd8 19.Bc1–+)) 17.ed6= Rfd8 18.Rfd1 Bd5 19.Rac1 (19.Be5!?=) 19...Rd6 20.Ba3 Rc8?? (better is 20...Rdd8–/+) 21.e4!+/– Rdd8 22.ed5 ed5 23.Rd4+/– Ne6 24.Rc8+– Rc8 25.Rd5 Nf4? 26.Rd7 Ne6 27.Re7 h6 28.Re8 Re8 29.Be8 Kh7? 30.g4 Kg6 31.Bd6 Kf6 32.f4 Nd4 33.Be5 Ke7 34.Ba4 f6?? 35.Bd4 1–0. gtate (1900) – guerino (2130), net–chess.com, 2004.

7.cd5 ed5 8.Qc2 =.

7.Be2 a5 8.0–0 c6 =.

7.Be2 a5 8.a4 Bb7 9.0–0 Nbd7 (9...c6 10.d4=) 10.d4 (10.cd5 Nd5 11.Qc2 Rc8=) 10...Rc8 11.Nbd2 h6 (11...c5 12.Rc1=) 12.Rc1 (12.Ba3 dc4 13.Be7 Qe7 14.Bc4 c5=) 12...c5 (12...c6 13.Qb3=) 13.h3 (13.Qc2 dc4 14.Nc4 Be4=) 13...Bd6 14.Re1 Qe7 15.Nb3 (15.cd5 Bd5 16.Nc4 Bc7=) 15...cd4 16.Nbd4 e5 (16...Nc5 17.Nc6 Bc6 18.bc6 Rc6 19.Bf6 Qf6 20.cd5=) 17.Nf5= Qe6 18.Nd6 Qd6 19.Qd2 (19.cd5 Bd5 20.Bc4 e4 21.Bd5 Nd5=) 19...Qe6 (19...Ne4 20.Qd1=+) 20.Rc2 (better is 20.cd5!? Bd5 21.Rc8 Rc8 22.Rc1=) 20...dc4–/+ 21.Rec1 (21.Qc1 Bf3 22.Bf3 Nc5 23.Rc4 Nd3 24.Rc8 Rc8–+ (24...Nc1?! 25.Rcc1 e4 26.Be2–/+)) 21...Bd5 22.Ne1 (22.Qe1 Ne4–/+) 22...Ne4 (22...Nc5 23.Bc4 Bc4 24.Rc4–+) 23.Qd1 Nd6 (better is 23...f5–+) 24.Rd2 Nf6 (better is 24...Rc5 25.Ba3 c3=) 25.Bf3?? (25.Bg4 Nf5 26.Rd5 Nd5 27.Bf5 Ne3 28.Be6 Nd1 29.Bc8 Nb2+/–) 25...Nde4 (better is 25...Bf3 26.Qf3 Nde4–+) 26.Rd5= Nd5 27.Be4+= Nf6 28.Bc6+– Rfd8 29.Qc2 Qe7 30.Qc4 Rd2 31.Qc3 Rcd8? 32.Qe5 Qb4 33.Bc3 Qa3 34.Bd2 Rd2 35.Qc3 Qd6 36.Nf3 Rd3 37.Qc2 Nh5 38.Nd4 Qa3 39.Be4 Re3 40.fe3 Qe3 41.Qf2 Qc1 42.Kh2 Qc7 43.g3 Qc4 44.Bc2 Nf6 45.Qe3 h5 46.Qe5 Qc8 47.Qd6 Nd7 48.Nc6 Qe8 49.Qe7 Qc8 50.Bf5 Qc7 51.Qd7 (51…Qd7 52.Bd7+–; better is 51.Qe8 Nf8 52.Ne7 Qe7 53.Qe7 g6+–) 1–0. Rongen – Bouma, Amsterdam, 1995.

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

7.Be2 Bb7 8.a4 c5 9.0–0 Nbd7 10.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.a4 Nbd7 10.d4).

7.Be2 dc4 8.Bc4 a6 9.a4 =.

7.Be2 dc4 8.Bc4 c5 9.0–0 Bb7 10.d4 cd4 11.Bd4 Nbd7 12.Nbd2 Rc8 13.Rc1 Nc5 14.Nb3 Nfe4 15.Nbd2 Nd2 16.Nd2 Bf6 17.Bf6 Qf6 18.f3 Rfd8 19.Qe1 h6 20.Be2 Qb2 21.Rd1? (better is 21.Nc4!? Qf6 22.Qg3=) 21...Qa2–/+ 22.Bc4 (22.Nc4!? Rd1 23.Qd1–/+) 22...Qc2–+ 23.Qe2 Bd5 24.Rf2?? (better is 24.Rfe1–+) 24...Bc4 (24...Bc4 25.Qe1 Bb5–+) 0–1. Valpa – Tapiwa, playchess.de, 2002.

7.Ne5 a6 =+.

7.cd5 Nd5

8.Nc3 a6 9.Nd5 ed5 10.Qa4 =+.

8.Nc3 Bb7 9.Be2 Nd7 (9...a6 10.Nd5 (10.a4 Bf6 11.d4 Nc3 12.Bc3 Qd5 13.0–0 ab5 14.ab5 Ra1 15.Ba1) 10...Bd5 11.a4 Bf6 12.d4 (12.Qb1 Bb2 13.Qb2 ab5 14.ab5 Ra1 15.Qa1) 12...ab5 13.ab5 Nd7 14.Ra8 Qa8 15.Qc2; 9...Nc3 10.Bc3 Nd7 (10...a6 11.a4 Bf6 12.0–0 Bc3 13.dc3 Nd7 14.Qd4 Nc5 15.Rfd1) 11.0–0 (11.Nd4 Ne5 12.0–0 Qd5 13.Nf3 Bd6 14.d4 Ng4 15.h3) 11...Nc5 12.Nd4 (12.a4 a5 13.ba6 Ba6 14.a5 ba5 15.Ra5) 12...a6 13.Nc6 (13.a4 ab5 14.ab5 Ra1 15.Qa1) 13...Qe8 14.Ne7 Qe7 15.a4) 10.Nd5 Bd5 11.Qc2 (11.0–0 Nc5 12.d4 Ne4 13.Nd2 (13.Ne5 f6 14.Nc6 Bc6 15.bc6) 13...f5 14.f3 Nd2 15.Qd2) 11...Nf6 (11...a6 A) 12.ba6 Nc5 13.d4 (13.a4 Na6 14.a5 f6 15.e4) 13...Be4 14.Qc3 Na6 15.0–0; B) 12.e4 Bb7 13.ba6 Ba6 14.Ba6 Ra6 15.0–0= 0.02 (15.a4=); 11...Nc5 12.Bd4 (12.d4 Ne4 13.0–0 Bd6 14.Rad1 f6 15.Bd3) 12...Rc8 13.0–0 c6 14.bc6 Bc6 15.Rac1) 12.0–0 Bb7 (12...Ne4 13.d3 Nd6 14.e4 Bb7 15.a4) 13.Ne5 (13.Rac1 Qd5 14.Be5 Rfc8 15.h3) 13...Qd6 (13...Nd5 14.Nc6 Bc6 15.Qc6) 14.Rac1 (14.Rfc1+= 0.68 14...Nd5 15.Bf3; 14.Bd4 a6 15.a4) 14...Rfc8 15.Nc6 (15.f3+=) 15...Bc6 16.Qc6 Qc6 (16...Qd2 17.Rc2 Qd5 18.Bf3 Qc6 19.Bc6=) 17.Rc6+/= Nd5 18.a3 Bd6 19.e4 (19.Rfc1 Rd8+=) 19...Ne7 (19...Nf4 20.Bc4=) 20.Rc2 c5 21.e5 Bc7 22.Bf3 Nd5 23.d4 Bd8 24.Rfc1 (24.dc5 bc5 25.Rfc1 Bb6+=) 24...Be7 25.dc5 bc5 26.Bd4 Rc7 27.Bc3 Rac8 28.Ba5 Nb6 29.Bb6 ab6 Rd8 31.a4 Ra7 32.Ra1 f6 33.f4 fe5 34.fe5 Bg5 35.a5 Ra5 36.Ra5 ba5 37.Kf1 Kf8 38.b6 Be7? 39.Ke2 g5 40.b7 Kf7? 41.Ra2 Kg6?? 42.Ra5 Kf5 43.Ra8 Ke5 44.b8Q Rb8 45.Rb8 h5 46.Rh8 h4 47.h3 Kd6 48.Bf3 Ke5 49.Kd3 Bf6 1–0. Krickemeyer,Horst – Ziegler,Heinz, Bad Woerishofen Seniors op, 1996.

8.Be2 a6+= 9.a4 c5 (9...Bb7 10.0–0+=) 10.0–0= Bf6 (10...Bb7 11.d4+=) 11.Nc3 a5 (11...Bb7 12.d4=) 12.Qb3 (12.d4 Nc3 13.Bc3 Bb7=) 12...Bb7 13.Rfd1 Nd7 14.Ne4 (14.Rac1!?=) 14...Bb2+= 15.Qb2 N7f6 (15...Ne3!? 16.de3 Be4+=) 16.d3 (16.Nf6 Qf6 17.Qf6 Nf6+=) 16...Qe7= 17.Ned2 (17.Nf6 Nf6 18.Ne5 Rac8=) 17...Nb4 (17...Nd7 18.Nc4=) 18.Nc4 Nd7 19.Nfe5 Ne5 (19...Qg5 20.g4 Ne5 21.Qe5 Qe5 22.Ne5+=) 20.Qe5 f6 21.Qg3 Qd8 (21...Nd5!?+=) 22.d4+/– cd4 23.Rd4 (23.ed4?! Bd5=) 23...Bd5 24.e4 Nc2 25.Rad1 Nd4 26.Rd4 Ra7 (26...Rc8 27.ed5 ed5 28.Nd6 Rc1 29.Bf1+–) 27.ed5 ed5 28.Ne3 (28.Qd3 Rd7 29.Ne3 f5+–) 28...Rd7 (28...Re8 29.Rd5 Rd7 30.Bc4 Rd5 31.Qf3+– (31.Bd5? Qd5 32.h3 Qe4–+)) 29.Bg4 (29.Qh3 Re8+–) 29...f5 (29...Rc7 30.h3+–) 30.Bf5 Rd6 (30...Qf6 31.Qh4 g5 32.Qg4+–) 31.Rd5! Rd5 32.Be6 Kh8 33.Bd5 Qf6 34.Bf3 Rd8 35.Bd1 h6 36.h3 Qa1 37.Qf3 Rd4 38.Kh2 Rd8 39.Bc2 Qe5 40.g3 Kg8 41.Ng4 Qd4 42.Qf5 Re8 43.Bb3 Kh8 44.Bf7 Re7 45.Qc8 (45.Qc8 Qd8 46.Qd8 Re8 47.Qe8 Kh7 48.Bg6#) 1–0. Bulcourf,Carlos (2295) – Alvarez,Veronica, Buenos Aires op3, 1993.

8.e4 Nf4 =.

8.e4 Nf6 =.

7.Be2 a6

8.a4 Bb7 9.0–0 c6 (9...c5 10.Na3 (10.d4 dc4 11.Bc4 cd4 12.Bd4 ab5 13.ab5 Ra1 14.Ba1=) 10...Nbd7 11.d4 dc4 12.Nc4 Bd5 13.Qc2 cd4 14.Bd4=) 10.Na3 (10.d3 Bd6 11.Nbd2 c5 12.d4 Qe7 13.cd5 ed5 14.dc5=; 10.d4 dc4 11.Bc4 Bd6 12.Ba3 ab5 13.ab5 cb5 14.Bb5=) 10...ab5 (10...dc4 11.ba6 Na6 12.Nc4 Nb4 13.Qb3 Nfd5 14.d3=) 11.ab5 (11.cb5 c5 12.Qc2 Nbd7 13.Rfc1 Bd6 14.Ng5+=) 11...Nbd7 (11...dc4 12.Bc4 Qd6 13.d3 Rc8 14.Qe2=) 12.d4 (12.bc6 Bc6 13.d3 dc4 14.Nc4=) 12...dc4 13.bc6 (13.Bc4 Ra5 14.Qe2=) 13...Bc6 14.Nc4 Ra1 15.Qa1 Qa8 16.Ba3 Ba3 17.Qa3 Qa3 18.Na3 Ra8 19.Nc2 Kf8 20.Rc1 Be4 21.Nce1 Rb8 22.Bb5 Ke7 23.Nd2 Bd5 24.Nd3 Kd6 25.Nc4 Bc4 26.Bc4 b5 27.Bb3 Nd5 28.Kf1 f6 ½–½. algernon (2580) – wvmaniac (2550), net–chess.com, 2014.

8.a4 Bb7 9.Na3 A) 9...dc4 10.0–0 (10.Nc4 Qd5 11.Qb3 ab5 12.ab5 Ra1 13.Ba1 Nbd7 14.d3=) 10...ab5 11.ab5 Bf3 12.Bf3 Ra5 13.Nc4 Rb5 14.Qc2=; B) 9...c6 10.0–0 (10.bc6 Nc6 11.0–0 Rc8 12.Rc1 Na5 13.Ne5 dc4 14.Nac4+=) 10...dc4 11.ba6 Na6 12.Nc4 Nb4 13.d4 Ra7 14.Qb3=.

8.a4 Bb7 9.Nc3 A) 9...c5 10.cd5 (10.ba6 Na6 11.cd5 Nd5 12.0–0 Bf6 13.Qb3 Nab4 14.Rfb1=) 10...Nd5 11.0–0 Bf6 12.d4 ab5 13.ab5 Nc3 14.Bc3=; B) 9...dc4 10.Bc4 (10.Qc2 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Bc4 Bf3 14.gf3+=) 10...ab5 11.ab5 Ra1 12.Ba1 c5 13.0–0 Qd6 14.Qe2=.

8.a4 Bb7 9.d4 A) 9...dc4 10.Bc4 (10.Nbd2 Bd5 11.0–0 ab5 12.ab5 Ra1 13.Ba1 c6 14.Qb1+=) 10...Bd6 11.0–0 ab5 12.ab5 Ra1 13.Ba1 Re8 14.Nc3=; B) 9...ab5 10.cb5 (10.ab5 Ra1 11.Ba1 dc4 12.Bc4 Qd6 13.0–0 Nbd7 14.Qe2=) 10...c6 11.Nc3 cb5 12.Nb5 Bb4 13.Bc3 Bc3 14.Nc3=.

8.a4 Bb7 9.cd5 A) 9...Nd5 10.Nc3 (10.0–0 c5 11.d4 ab5 12.ab5 Ra1 13.Ba1 Nd7 14.Nbd2=) 10...c5 11.0–0 Bf6 12.d4 ab5 13.ab5 Nc3 14.Bc3=; B) 9...Bd5 10.Nc3 (10.0–0 ab5 11.ab5 Ra1 12.Ba1 c6 13.Nc3 cb5 14.Bb5=) 10...c6 11.0–0 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Bb5=.

6.c4 dc4

7.Bc4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.0–0 cb5 12.Bb5 Bd7 13.Bd7 Qd7 14.Bf6 Bf6 15.Nc3 Bc3 16.dc3 Qd1 17.Rd1 Nc6 18.Kf1 g6 19.Rd7 b5 (19...Rb8!?+=) 20.Rc7 Na5 21.Nd4 Nc4 22.Nb5 Nd2 (22...Ne5 23.e4+/–) 23.Ke1 Rd8 24.c4 Ne4 25.f3 Nf6 26.e4 Nh5 27.c5 Nf4 28.g3 Nd3 29.Ke2 Nb2? (better is 29...Nc1 30.Ke3 Rd3 31.Kf4 f6+–) 30.c6 Nc4 31.Rd7 ½–½. usingprogram (1985) – jpb88, kurnik, 2012.

7.Bc4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.0–0 Qc7 12.Bf6 Bf6 13.d3 cb5 14.Bb5 Bd7 15.Bd7 Nd7 16.Qb3 Rd8 17.Nbd2 Ne5 18.d4+= Nf3 19.Nf3 Rb8 20.h3 b5= 21.Rb1 h6 22.Qd3 Qa5 23.Nd2 b4 24.Nb3 Qa3 25.Nc5 Qd3 26.Nd3 b3 27.Rb2+= Be7 28.Nc1 Ba3 29.Rb3 Rb3 30.Nb3 Kf8 31.f3 Ke7 32.Kf2 Kd6 33.Ke2 Kc6 34.Kd3 Kb5 35.e4 f6 36.Nd2 Kc6 37.Nc4 Be7 38.f4 g6 39.g4 f5? 40.gf5 gf5 41.ef5 ef5 42.Ne5 Kd5+= 43.Ng6 Bf6= 44.Nf8 Bd4 45.Nd7 Bf2 46.Nf6 Ke6 47.Nh5 Kf7 48.Ke2 Bh4 49.Kf3 Kg6 50.Ng3 Bg3 51.Kg3 h5?? 52.h4 Kf6= 53.Kf3 Ke6 54.Ke3 Kd5 55.Kd3 Kc5 56.Kc3 Kd5 57.Kd3 Kc5 58.Kc3 Kd5 59.Kd3 Kc5 ½–½. ida1 – Celll, Live Game Caissa's Web, 2005.

7.Bc4 a6 8.ba6 b6 9.0–0 =+.

7.Bc4 b6 8.0–0 Bb7 9.a4 c6 10.Nc3 cb5 11.ab5 Nbd7 12.Be2 Nc5 13.d4 Nce4 14.Ne4 Ne4 15.Nd2 Nd2 16.Qd2 Qd5 17.Bf3 Qb5?? (Better is 17...Qd7 18.Bb7 Qb7+=) 18.Bb7+– Rab8 19.Bf3 (19.Ra7?! Qd7+=) 19...Bb4 20.Bc3 Be7 (20...Bc3 21.Qc3 Rfc8+–) 21.Ra7 Bf6 22.Qb2 Qb2 23.Bb2 Rfc8 24.Rc1 Rc1 25.Bc1 1–0. hal1958 – sarx, HCL–B2210 playchess.de, 2003.

7.Bc4 Bd7 8.0–0= a6 9.Na3 =.

7.Bc4 Bd7 8.0–0= c6 9.a4 cb5 10.ab5 Re8 11.Qb3 Bc8 12.Ne5 Nbd7 13.Nf3 Nb6= 14.Be2 Nbd5 15.Nc3 Bd7 16.Nd5 Nd5 17.Nd4 Bf6 18.Rab1 b6 19.Nc6 Qc8 20.Bf6+/– Nf6 21.Nd4 Qd8 22.h3 Rc8= 23.Nc6 Bc6=+ 24.bc6 Rc6 25.Bb5+/– Qc7 26.Bc6 Qc6 27.Rfc1 Qd6 28.d3 Rd8 29.Rc3 Nd5 30.Rc2 a6 31.Rbc1 h6 32.d4 a5 33.Rc6 Qd7 34.e4 Nb4+= 35.d5 Nc6–/+ 36.dc6 Qc7 37.Rd1? (37...Rd1 38.Qd1 Qc6 39.e5–+; better is 37.Qa4–/+). HeresJhonny – goshawk68, Caissa.com, 2004.

7.Bc4 Bd7 8.0–0 c6 9.a4 cb5 10.Bb5 Qb6 11.Nc3 Bb5 12.ab5 Nbd7 13.d4 Rfc8 14.Qe2 Bb4 15.Rfc1 Rc7 16.Na4 Rc1 17.Rc1 Qa5 18.Nc5 Nc5 19.dc5+/– Rc8 20.Bf6 gf6 21.Qb2 Kg7 22.Qd4 Qa3 23.Qg4 Kf8 24.Rf1 Rc5 25.Nd4 Rg5?? 26.Qe4 Bc5 27.Qb7 Bd4=+ 28.ed4 Qa5 29.h4 Rd5 30.Rc1= Rb5 31.Rc8 Kg7 32.Qf3 Qa1?? 33.Kh2+– Qd4 34.Qg3 Kh6 35.Rc7 Qe5 36.Qe5 Re5 37.Ra7 Kg6 38.Ra4 h5 39.Rd4 f5 40.g3 Re2 41.Kg2 Re4 42.Rd7 Kf6 43.Rc7 Rd4 44.Rb7 Rd2 45.Rc7 Rd6 46.Rb7 Ra6 47.Rb5 Rc6 48.Ra5 e5 49.Ra4 Kg6 50.Ra5 e4 (51.Ra8 f4 52.gf4 Kf5–/+) 0–1. PingPongPeng (1675) – Solare,Juan Maria (1820), Rated game, 3m + 0s, 2004.

7.Bc4 Nbd7 8.0–0 b6 9.d4 Bb7 10.Nbd2 Nd5 11.e4+= N5f6 12.Re1 a6 13.a4 ab5 14.ab5 Ra1 15.Qa1 c5 16.dc5 Nc5= 17.h3 Nce4–/+ 18.Ne4 Be4 19.Nd4 Bc5 20.Nc6 Bc6 21.bc6=+ Nh5 22.Be5 f6?? 23.Be6 Kh8+= 24.c7 Qd2 25.Kh2 fe5 26.Rd1?? Qf2 27.Qe5 Nf4 (28.Bd5 Nd5 29.Qd5 Qf4 30.Kh1 Qc7–+) 0–1. gtate (1845) – siakmet, net–chess.com, 2003.

7.Bc4 Nbd7 8.0–0 Nb6 9.Be2 a5 10.ba6 ba6 11.Nc3 Bb7 12.Rb1 Nfd5 13.Nd5 Bd5 14.Qc2 Ba2 15.Ra1 Bd5 16.e4 The isolani on a6 becomes a target 16...Bb7 17.Ra5 c5 18.Rfa1 Qd7 19.h3 Rfd8 20.Rb1 (worse is 20.Rc5 Bc5 21.Qc5 Na4 22.Ra4 Qa4–/+) 20...Qc7 21.Be5 Bd6 22.d4 f6?? (better is 22...c4+/–) 23.Rc5 (23.Rc5 Qf7 24.Bd6 (24.Rb6?! Bc5 25.Qc5 Rac8+–) 24...Rd6 25.e5 fe5 26.de5+–) 1–0. b4_player – verte, casual, 2013.

7.Bc4 Nfd7 8.0–0= Bf6 9.Bf6 Qf6 10.d4 Nb6 11.Bd3+/– h6 12.Qc2 N8d7 13.Qc7+– Qd8 14.Qd8 Rd8 15.Re1 Nf6 16.h3 a6 17.ba6 ba6 18.Nbd2 Bb7 19.Rab1+– Bf3 20.Nf3 Nbd5 21.Rec1 Rdc8 22.Rc8 Rc8 23.Ba6 Ra8 24.Bc4 Nc3 25.Rb2 Nfe4 26.Rc2 Nd5 27.Ne5 Nef6 28.Kh2 Nb4 29.Rb2 Nbd5 30.Rb7 Rf8 31.a4 Ne4 32.Kg1 f6 33.Bd5 ed5 34.Nc6 Ra8 35.a5 Nd6 36.Rd7 Nc4 37.Rd5 Kf7 38.Rc5 Nd6 39.f3 Nb7 40.Rb5 Nd6 41.Rb8 Ra6 42.Rb6 Ra8 43.a6 Nc8 44.Rb7 Kg8 45.a7 Kh7 46.d5 h5 47.Rb8 Ra7 48.Na7 Na7 49.d6 Nc6 50.d7 (50...Kg6 51.Rc8+–) 1–0. Machete (2285) – loupiotte (1640), ICC, 2003.

7.Bc4 c6

8.a4 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Nbd7 13.d4 Qa5 14.Nc3 Nd5 15.Nd5 ed5 16.Qb3 Nf6 17.Bd3 Qd8 18.Qc2 h6 19.Rb1 Bd6 20.h3 Re8 21.Nd2 Re7 22.e4 de4 23.Ne4 Ne4 24.Be4 Rc7 25.Qd3 Qe7 26.Re1 Qf8 27.d5 Bd7 28.Qe3 b5 29.Bh7?? (better is 29.Bd4=) 29…Kh7–+ 0–1. Becker,Joachim – Samarian,Cornel2 (1775), Sparkassen Open, Nettetal GER, 2010.

8.a4 a6 9.Qb3 ab5 10.ab5 Ra1 11.Ba1 c5 12.0–0 b6 13.d4 Bb7 14.Ne5 Nfd7 15.Nd7 Nd7 16.Nd2 Nf6 17.Rd1 Qc7 18.dc5 Qc5 19.Bd4 Qg5 20.Bf1 Bc5 21.Qb2 Ne4 22.Ne4 Be4 23.Bc5 Qc5 24.Rc1 Qd6= 25.Rc4 f5 26.Rd4 Qc7 27.Bc4 Rf6 28.Qd2 Qe5 29.Rd8 Kf7 30.Qd7 Kg6 31.Qe8 Kh6 32.Rd4 Rg6 33.Bf1 f4 34.Qd8 Rg4 35.h3+– Rg5 36.Qd6 (36...fe3 37.f4 Qd6 38.fg5 (38.Rd6?! Rg6=) 38...Kg5 39.Rd6+–) 1–0. Steche,R – Krause, corr DDR, 1988.

8.a4 Bd7 9.0–0 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 cb5 13.Nb5 Nc6 14.Qb1 Na5 15.Bd3 h6 16.Rc1 b6 17.Be2 Nb3 18.Rc2 Nc5 19.h3 Nd5 20.Be5 Bf6 21.d4 Bb5 22.Bb5 Ne4 23.Bd3 Nd6 24.Bh2 Be7 25.e4 Nc7 26.Qb6 Na8 27.Qa7 Nb6 28.Rc6 Nbc8 29.Qc7 Qc7 30.Rc7 Bd8 31.Rd7 Bb6 32.Bd6 (32...Nd6 33.Rd6+–; < 32.Rd6 Nd6 33.Bd6 Ra8+–) 1–0. pierre (2150) – onurtasan, internet, 2007.

8.a4 cb5

9.ab5 a5 10.0–0 =.

9.ab5 a6 10.0–0 =.

9.ab5 a6 10.Nc3 ab5?? 11.Ra8+– bc4 12.Rb8 Qc7 13.Ra8 Bd7 14.Rf8 Bf8 15.d3 cd3 16.Qd3 Bc6 17.0–0 Bf3 18.gf3 Bd6 19.Nb5 Bh2 20.Kg2 Qb8 21.Rh1 Be5 22.Be5 Qe5 23.Qd8 (23...Ne8 24.Qe8#) 1–0. b4_player – opponent, gamecolony.com, 2007.

9.ab5 a6 10.Nc3 Qc7 11.Qe2 Nbd7 12.0–0 Nb6 13.Bd3 Bd7 14.Rfc1 ab5 15.Nb5 Qd8 16.Ra8 Qa8 17.Ra1 Qb8 18.Be5 Qd8?? (better is 18...Qc8+=) 19.Bc7+– Qe8 20.Bb6 1–0. b4_player – manne, casual, 2013.

9.ab5 a6 10.Nc3 Nbd7 11.d4 Nb6 12.Be2 a5 13.0–0+= Nbd5 14.Nd5 ed5 15.h3 b6 16.Qd3 Be6 17.Rfc1 Rc8 18.Ne5+= Bd7 19.Nc6 Bc6 20.Rc6 Rc6+= 21.bc6 Qc7 22.Qb5 h6 23.Rc1 Bd6 24.f4 Re8=+ 25.Kf2 Ra8 26.Bf3 a4 27.Bd5? Ra5–+ 28.Qc4? Nd5 (28...Rd5?! 29.Qa4 Ne4 30.Kf3–+) 0–1. gtate (1930) – borisvod (2300), net–chess.com, 2006.

9.ab5 b6 10.0–0 (10.Qe2 Bb7+=) 10...Bb7 11.d4 (11.Qe2 Ne4+=) 11...Qc7 (11...a5 12.ba6 Na6 13.Qe2=) 12.Be2 (12.Qe2 Ng4 13.e4 Nf6+=) 12...Nbd7 (12...Rc8 13.Qd3=) 13.Nbd2 (13.Qd2 Rfc8+=) 13...Ne4 (13...Rfc8 14.Bd3+=) 14.Rc1 (14.Ne4 Be4 15.Qa4 Rfc8+=) 14...Qd8 (14...Qd6 15.Ne4 Be4 16.Nd2+=) 15.Bd3 (15.Ne4 Be4 16.Qa4 Bd5+=) 15...Nd2 16.Qd2 (16.Nd2 a5+=) 16...Bf3 17.gf3 g6 (17...Nf6 18.f4=) 18.Ra1 (18.Be4 Rb8+=) 18...Nf6 19.Kh1 (19.Rfc1 Nd5+=) 19...Qd5 (19...Nd5 20.Rfc1+=) 20.e4 Qb7 (20...Qh5 21.Qf4+=) 21.Qe3 (21.Rfc1 Rac8+=) 21...Rfc8 (21...Rac8 22.Kg2+=) 22.Rg1 (22.Ra6 Ne8+=) 22...Bf8 (22...Rc7 23.Rac1+=) 23.Rg2 (23.Kg2 Bg7+=) 23...Bg7 24.Rag1 (24.Kg1 Rc7=) 24...Qd7= 25.f4 Re8 26.Qf3 Qb7 27.Qe2 Rac8 28.f3 Nd7 29.Qf2 Bh6 30.Qh4 Bg7 31.Qh3 Nf6 32.f5+= ef5 33.ef5 Qd7 34.Qg3 Nh5 35.Qg4 Nf6 36.Qf4 Nh5 37.Qg4 Nf6 38.Qh4 Re3 39.fg6 fg6 40.Bb1 Rf3+= 41.d5 Rh3 42.Qg5 Rh5–/+ 43.Qg3 Rh3 44.Qg5= Rh5 (44...Nd5?? 45.Bf5 Qf5 46.Qf5 gf5 47.Rg7 Kf8 48.Rg8 Ke7 49.R1g7 Ke6 50.Rc8+–) ½–½. Schwetlick – Widiger, 1985.

9.ab5 Nbd7

10.0–0 a5 =.

10.0–0 b6 11.Nc3 Bb7 12.d4 Bd6 13.h3 Rc8 14.Be2 Bb8 15.Rc1 Nd5 16.Nd5 Rc1 17.Qc1 Bd5 18.Qc3 Nf6 19.Nd2 Qd7 20.Rc1 Bb7 21.Qd3 Rc8 22.Rc8 Qc8 23.f4 Qd7 24.Nf3 Be4 25.Qb3 Bd5 26.Bc4 Bc4=+ 27.Qc4 Nd5 28.Kf2 Nc7 29.Qc6 Qc6 30.bc6 Nd5 31.Ba3 f6 32.e4 Nf4= 33.g3 Nh3 34.Kg2 Ng5 35.Ng5 fg5 36.d5 ed5 37.ed5= Kf7 38.d6 Ke6 39.c7 Bc7 40.dc7 Kd7 41.Bd6 a5 42.Kf3 h5 43.Ke4+= g6 44.Kd3 b5 45.Kc3 g4 46.Bf4 g5 47.c8Q Kc8 48.Bg5 Kd7 49.Kd4 Kd6 50.Bd2 b4 51.Bf4 Ke6 52.Kc4 Kf5 53.Bc7 Kg5?? 54.Ba5+– h4 55.Bd8 Kh5 56.Bh4 (56...Kg6 57.Kb4+–) 1–0. Kreuzer – Eichhorn, 1982.

10.0–0 Nb6 11.Be2 =.

10.0–0 Nc5 11.d4 Nce4 12.Nc3 (12.Ne5 Nd7+=) 12...b6 (12...Nc3 13.Bc3 Nd5 14.Qd3+=) 13.Ne4 Ne4 14.Bd3 Bb7 15.Rc1 (15.Ne5 Nf6+/–) 15...Qd7 (15...Bd6 16.Qc2 Rc8 17.Qa4+=) 16.Qc2 (16.Ne5!? Qd5 17.f3+/–) 16...Rac8 (16...Rfc8 17.Qe2=) 17.Qb1 (17.Qa4 a5+=) 17...f5 (17...Qd5 18.Be4 Qe4 19.Qe4 Be4 20.Ne5=) 18.Rc2 (18.Qa1 Bd5+=) 18...Nd6 Attacks the isolani on b5 (18...Bd6!?=) 19.Ne5+/– Qe8 20.Rc8 (20.Rfc1 Rc2 21.Qc2 Be4 (21...Nb5? 22.Qb3 Nd4 23.ed4+–) 22.Be4 Ne4+/–) 20…Qc8 ½–½. Eisenhauer,Erik – Fox,Dennis, Woerrstadt, 1999.

10.Nc3 Nb6 11.Be2 Nfd5 12.Nd5 Qd5 13.0–0 Bd7=+ 14.Nd4 e5 15.Bf3 e4 16.Be2= Bf6 17.Rb1 Rfc8 18.Bc3 h6 19.Qb3 Nc4 20.f3+= Nb6 21.fe4 Qg5 22.Rf3 Rf8 23.Rg3+– Qc5 24.Bb4 Qc7 25.Bf8 Rf8 26.Rf1 Be5 27.Rgf3 Bh2 28.Kh1 Bg4 29.R3f2 Be2 30.Ne2 Be5 31.Nf4 Qe7 32.Ng6 Qg5 33.Ne5 Qe5 34.Rf5 Qe7 35.e5 Nd7 36.d4 Qh4 37.Kg1 Qe7 38.Qa2 b6 39.Qa7 Qe8 40.Qc7 Qe6 41.e4 g6 42.R5f3 Kg7 43.d5 Qe8 44.e6! Nc5 45.Rf7 ½–½. Mothes,Rainer – Gnauck, 2.Landeskl Waldkirchen, 1995.

10.Nc3 Qc7 11.d3 =.

6.c4 c6!?

7.a4 (--> 5.Nf3 c6 6.a4 0–0 7.c4).

7.Qb3 cb5 8.cb5 b6 9.Be2 Nbd7 10.d4 Bb7 11.Nbd2 a5 12.a4 Rc8 13.0–0 Bb4 14.Rac1 Rc1 15.Rc1 h6 16.Bd3 Bd6 17.Bb1 Qe7 18.Ne5 Rc8 19.Rc8 Bc8 20.Nc6 Qe8 21.Ba3 Ba3 22.Qa3 Qf8 23.Qd3 g6 24.Nf3 Kg7 25.Nfe5 Qe8 0–1. Robby – mase, playchess.de, 2001.

7.Qb3 cb5 8.cb5 Nbd7 9.Be2 =.

7.Qb3 dc4 8.Bc4 cb5 9.Bb5 a6 (9...b6 10.d4=) 10.Be2 b5 11.0–0 (11.a4 ba4 12.Qa4 Nbd7=) 11...Bb7 (11...Nbd7 12.Rc1=) 12.a4 b4 (12...Bd5 13.Qc2=+) 13.Bf6 Bf6 14.Qb4 (14.d4 Nc6=) 14...Nc6 (14...Ba1 15.Qb7 Nd7 A) 16.Ba6? Nc5 17.Qb5 Na6–+ (17...Ra6?! 18.Qc5 Ra4 19.d4–/+); B) 16.Na3=+) 15.Qb7= Na5 16.Qb4 (16.Qa8 Qa8 17.d4 Rc8=) 16...Ba1=+ 17.d4 Rb8 18.Qa3 (18.Qd2 Rb2 19.Qd3 Ra2=+) 18...Bb2 19.Qd3 Rb4 20.Qa6 Ra4 21.Qb5 (21.Nbd2 Qa8=+) 21...Ra2–/+ 22.Nbd2 Qd5 23.Qd3 Rb8 24.Ne4 (24.Ne5 f6 25.Bf3 Qb5–/+) 24...h6 (24...Nb3 25.Rb1–/+) 25.Ng3 (25.Rb1 Ra8=+) 25...Ba3 (25...Rb3 26.Qa6 Qb7 27.Qd6–/+) 26.Bd1 (better is 26.Rb1 Rb1 27.Qb1–/+) 26...Rab2?? (26...Rbb2 27.Ne5 Bd6 28.Bf3–/+) 27.Ne5?? (better is 27.Qa3!? Nc6 28.Qc3+–) 27...Bf8?? (better is 27...Bd6 28.Bf3 Qb3 29.Qb3 R8b3–/+ (29...Nb3?! 30.Nc4 Bg3 31.Nb2=; < 29...R2b3 30.Nd7 Bg3 31.hg3=+)) 28.Bh5+/– Bd6 (28...R2b7!? 29.Bf3 Qb3 30.Bb7 Qd3 31.Nd3 Rb7+/–) 29.Bf7+– Kf8 30.Qg6 Be5 31.Be6 (31.de5?! R2b6 32.f4 R8b7=) 31...Qb7 32.de5 (32...Rb1 33.Qf5 Ke8 34.Bd7 Kd8 35.e6+–) 1–0. Drelinkiewicz,Tadeusz – Manasterski,Lutoslaw (2340), Poland–ch33 Bydgoszcz, 1976.

7.Qc2 a6 8.cd5 Nd5 9.e4=+.

7.Qc2 dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Nc3 Qa5 11.Bc4 (11.Be2 Nc6=) 11...Nc6 12.a3 Rac8 13.Qb1 (13.Qd3 Qd8+=) 13...Qh5 (13...Nd4 14.ed4 Rc4 15.Qd3–/+) 14.Be2+= Ne5 (14...e5 15.0–0+=) 15.h3 (15.Ne4 Nf3 16.Bf3 Qb5=) 15...Ng6 (15...Nc4 16.Qa2 Nb2 17.Qb2+=) 16.Nh2 (16.0–0 Qa5=) 16...Qg5 (16...Qh6 17.0–0–/+) 17.g3 (17.Nf3!? Qa5 18.0–0+=) 17...Bc6 18.Bf3 (18.Nf3!? Qa5 19.0–0–/+) 18...Ne5–+ 19.Bc6 Rc6 (19...bc6?! 20.Ne4 Qh5 21.g4=) 20.Ne4 Qh5 (20...Ne4 21.Qe4 Nc4 22.Bc3–/+) 21.Nf6 (21.Be5!? Qe5 22.Ng4 Ng4 23.hg4–/+) 21...Bf6 22.Be5 (22.Qe4–/+) 22...Be5 (better is 22...Qe5!? 23.d4 Qa5 24.Kf1 Qd5–+) 23.Qb7–/+ Rfc8 24.Rd1 Qh3 (24...Bd6 25.0–0+=) 25.Ke2+= Bg3 26.Nf3 (26.fg3 Qg2 Double attack (26...Qg2 Decoy)) 26...Qg2 27.Rhf1?? (better is 27.Rdf1!? Bf2 28.Rh2+/–) 27...Rc5 (27...R6c7 28.Qb1+=) 28.Qd7+= h6 (28...R5c7 29.Qd4 h5 30.Ne1=) 29.Qd4 (better is 29.Ne1 Qh2 30.Nf3=) 29...e5?? (better is 29...Rc4 30.Qa1 e5=) 30.Qg4+– e4 31.Nh4 Rg5?? (31...Qh2 32.Qg3 Qg3 33.fg3 g6+–) 32.Qc8 (32.Qc8 Kh7 33.Ng2+–; 32.Ng2?! Rg4 33.fg3 g5+/–) 1–0. Kasachev,Yuriy – Hryashev,Denis (1940), Astrakhan Open, 2011.

7.Qc2 dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Be2 Nc6 (10...Bc6 11.Nc3=) 11.0–0 Nb4 (11...Rc8 12.Nc3=) 12.Qb3 Nbd5 (12...Rc8 13.Na3=) 13.Nc3 (13.Ne5 a5=) 13...Bc6 14.Nd4 Qd7 (14...Rb8 15.d3=) 15.Nc6 Qc6 (15...bc6 16.d4=) 16.Bf3 Qd7 (16...Rac8 17.Rfc1 Qd7 18.Nd5 Nd5 19.d3+=) 17.Nd5 Nd5 (worse 17...ed5 18.Bf6 Bf6 19.Rab1+–) 18.e4 (18.d3 Rac8=) 18...Nb6 (18...Nf4 19.d4=) 19.d4 Qa4 (19...Rfc8 20.Rfd1=) 20.Bd1 (20.Rfe1 Qd7+=) 20...Qc4 (20...Qc6 21.Re1+=) 21.Rc1 Qb3 22.Bb3 Rac8 23.f4 (23.d5 ed5 24.ed5 Rfd8+–) 23...Rfd8 24.Kf2 (24.a4 Bb4+=) 24...Rc1 (24...a5 25.Rc8 Rc8 26.Rc1+=) 25.Rc1+– (worse 25.Bc1 Rd4 26.Ke3 Bc5–/+) 25...Rc8 (25...Kf8 26.g4+–) 26.Rc8 (26.g4 Rc1 27.Bc1 a5+–) 26...Nc8 27.d5 (27.g4 Nd6 28.Ke3 b5+–) 27...ed5+= 28.Bd5 Bc5 29.Ke2 b6 (29...b5 30.Kd3+=) 30.Kd3 (30.e5 b5+–) 30...Kf8 (30...Ne7 31.Bd4 Bd6 32.g3+–) 31.Bd4 (31.e5 Ne7 32.Be4 Ke8+–) 31...Bd6 (31...Bd4 32.Kd4 Nd6 33.Bc6+=) 32.e5+– Bb4 33.g4 Ne7 34.Be4 h6 35.Be3 Ng8 (35...Ba3 36.Kc4+–) 36.Kc4+– Ba3 37.Kb5 Ke7 (37...Ne7 38.Ka6+–) 38.Bh7 (38.Ka6 h5+–) 38...Kf8 39.Ka6 Ne7 40.Be4 Ke8 (40...Ng6 41.Ka7 Bc5 42.Bd2+–) 41.Ka7 Bc5 (41...b5 42.Kb6 b4 43.Kb5+–) 42.Bd2 (better 42.Bc5!? bc5 43.Kb6+–) 42...Kd7 43.Kb7 (43.Ka6 Ke6+–) 43...Bg1 (43...Bd4 44.Bd3+–) 44.h4 Bc5 (44...Bd4 45.Ka6+–) 45.h5 Ke6 (45...Bd4 46.Ka6+–) 46.Bc3 Kd7 (46...f5 47.ef6! gf6 48.g5 hg5 49.h6+–) 47.f5 Ke8 48.Kc7 (48.f6 gf6 49.ef6 Ng8+–) 48...Kf8 (48...Ng8+–) 49.a4 Ke8 (49...f6 50.ef6 gf6 51.Bf6+–) 50.f6 gf6 51.ef6 1–0. Nemeth,Laszlo1 (1965) – Zeman,Adrienn (1995), HUN–chT2 Erkel, 2009.

7.Qc2 h6 8.Be2 (8.Nc3 a6=) 8...Nbd7 (8...dc4 9.Qc4 Bd7 10.a4=) 9.0–0 (9.cd5 cd5 10.0–0 a6=) 9...dc4 (9...cb5 10.cb5 a6 11.Rc1=) 10.bc6+= bc6 11.Qc4 (11.Bc4 Rb8+=) 11...Rb8= 12.Be5 (12.Qc2 Qb6 13.Ba3 c5=) 12...Rb6 13.d3 (13.Qc2 Ne5 14.Ne5 c5=) 13...Ne5=+ 14.Ne5 The isolani on c6 becomes a target 14...Qd5 (14...Bd6 15.f4=+) 15.d4 (15.f4=) 15...Ba6 (15...c5 16.Bf3 Qc4 17.Nc4=+) 16.Qd5 (16.Qc2!?+=) 16...cd5=+ 17.Ba6 Ra6 18.Nd2 (18.Rc1 Bd6=+) 18...Ba3 (18...Rc8 19.a4=+) 19.Nd3 (19.Rab1 Rc8=+) 19...Rc8 (19...Ne4 20.Nb3 Rc8=+) 20.Rab1 (20.Rfb1!?=+) 20...Rc2–/+ 21.Rb8 Kh7 22.Nf3 Rb6 (22...Bd6!? 23.Rb7 Raa2 24.Rf7 a5–/+) 23.Rb6=+ ab6 24.Ra1 (24.Nfe5 Rd2 25.f3 Kg8=) 24...Nd7 (24...Ne4 25.Rb1=+) 25.Kf1 b5 (25...Bd6 26.Ke1=+) 26.Ke1 (26.Rb1 Nf6=) 26...Nb6 (26...Nf6 27.Rb1=+) 27.Kd1= Rc3 (27...Rc7 28.Rb1 Na4 29.Rb3 Nc3 30.Ke1=) 28.Nfe1 (28.Rb1 Be7 29.Nde5 b4=) 28...Bd6 (28...Na4 29.Kd2 Rc7 30.Nc2=+) 29.Rb1= Na4 30.Rb3 (30.Kd2 Ra3 (worse 30...Bh2 31.g3+–) 31.Rb5 Nc3= (worse 31...Bh2 32.Nc2 Ra2 33.g3+–)) 30...b4 (30...Bc7 A) 31.Rb5? Rd3 (31...Bh2?! 32.Rb3=) 32.Nd3 Nc3 33.Kd2 Nb5–+; B) 31.h3=) 31.h3 (31.Kd2 Rb3 32.ab3 Nc3=) 31...Rc4 32.Kd2 Nc3 33.Rb2 Ne4 (33...Kg6 34.f4=+) 34.Ke2= Nc3 35.Kd2 Ne4 (35...Kg6 36.g3=+) 36.Ke2= Nc3 (36...Kg6=) 37.Kf3 (37.Kd2!?=) 37...Kg6 (37...f6 38.Nc1–/+) 38.g3 Kf6 (38...f6 39.Kg2–/+) 39.Ng2 (39.Ne5 Be5 40.de5 Ke5 41.Nd3 Kd6 42.Nb4 e5=+) 39...Na4–/+ 40.Re2 (40.Rb1 g5–/+) 40...Rc3 (40...Rc7 41.Nge1–/+) 41.Nge1 g5 42.Nb2 Nb6 43.Rc2 Kg6 (better 43...h5–/+) 44.a4? (better 44.Rc3!? bc3 45.Nd1=+) 44...Rc2–+ 45.Nc2 Nc4 46.Nb4?? (better 46.Nd3 b3 47.Na1–+) 46...Nb2–+ (46...Bb4?! 47.Nd3 Bd6 48.Nc5–+) 47.Na2 (47.Nc2 Na4 48.e4 de4 49.Ke4 Nb2–+) 47...Na4 48.Nc1 Nb2 (48...f5 49.Nb3–+) 49.Na2 (49.e4 Nc4 50.Nb3 h5–+) 49...h5 50.Nc3 Nd3 (50...Nc4 51.Nb5–+) 51.Ke2 Nb4 52.Kf3 (52.Nb5 Bb8–+) 52...f6 (52...e5 53.de5 Be5 54.Nb5–+) 53.Ke2 (53.e4 g4! 54.hg4 hg4 55.Ke2 de4 56.Ne4 Be7–+) 53...e5 54.Nb5 Be7 (54...Bb8 55.de5 fe5 56.f3–+) 55.Kd2 (55.f3 e4–+) 55...g4 56.hg4 hg4 57.Kc3 (57.Nc3 Kf5–+) 57...Kf5 58.Kd2 Ke4 59.Ke2 Na2 60.Nc7 (60.Kf1 Bb4–+) 60...ed4 61.ed4 Nc3 62.Kf1 (62.Kd2 Kd4 63.Ne6 Kc4–+) 62...Kd4 63.Ne6 (63.Ke1 Kd3–+) 63...Ke4 64.Ke1 d4 65.Kd2 (65.Nc7 Bb4 66.Na6 Bd6–+) 65...Nd5 66.Kd1 (66.Nd4 Bb4 67.Ke2 Nc3 68.Ke1 Nb5 69.Kf1 Nd4–+) 66…Bb4 0–1. Nemeth,Laszlo1 (1980) – Dobak,Daniel (1970), HUN–chT2 Erkel, 2005.

7.Nc3 a6 8.a4 =+.

7.Nc3 a6 8.ba6 Na6 (< 8...Ra6 9.cd5 Ra5 10.dc6 Nc6 11.d4+=) 9.cd5 cd5 (9...ed5 10.Be2=+) 10.Be2= Nc5 11.0–0 Nce4 12.Ne4 Ne4 (12...de4 13.Ne5=) 13.d3 Nf6 (13...Nc5 14.Qc2=) 14.Qd2 Bd7 15.Rfc1 Bc6 (15...b5 16.Be5=) 16.Ne5+= Qd6 17.Bf3 Rfc8 18.d4 (18.a4 b6=) 18...Be8 19.Qd3 (19.Rc8 Rc8 20.Rc1 Rc1 21.Qc1 b5=) 19...Rc1=+ 20.Rc1 (20.Bc1 b5=+) 20...Ra2–/+ 21.Qb3 (21.Qb1 Ra8=+) 21...Ra8 22.Qb7?? (better is 22.Qd1–/+) 22…Rb8–+ (23.Qc7 Qc7 24.Rc7 Rb2–+) 0–1. gtate (1810) – rhand (2000), net–chess.com, 2002.

7.Nc3 a6 8.bc6 Nc6 9.cd5 ed5 10.Be2=.

7.Nc3 cb5 8.cb5 Nbd7 9.Be2 a6 10.0–0=.

7.Nc3 cb5 8.cb5 Nbd7 9.Be2 Ne4 10.Rc1 (10.0–0 Nc3 11.Bc3 Bd6=) 10...Nd6 (10...a6 11.ba6 ba6 12.Qc2=) 11.0–0 (11.Qc2 a6=) 11...Nb6 (11...a6 12.ba6 ba6 13.Qc2=) 12.a4 (12.d3 a6=) 12...Nbc4 (12...a6 13.ba6 ba6 14.Ba1=) 13.Ba1+= a6 14.d3 Na5 15.Rb1 (15.ba6 ba6 16.Re1 Bb7=) 15...Bf6 (15...ab5 16.Nb5 Nb5 17.ab5=) 16.Qd2 (16.Qc2 Bd7=) 16...ab5= 17.ab5 (< 17.Nb5 Ba1 18.Nd6 Qd6–/+) 17...b6 18.Rfd1 (18.Rfc1 Bb7=) 18...Bb7 19.Rb4 (19.Qc2 Rc8=) 19...Rc8 (19...e5 20.Na4 Re8 21.Bc3=) 20.Na4 Ba1 (20...Ne8 21.Bf6 Nf6 22.Ra1+=) 21.Ra1+= Re8 22.Rbb1 e5 (22...Ra8 23.Qc3+=) 23.Nb6+/– Qb6 (23...Nb3!? 24.Rb3 Qb6+/–) 24.Qa5+– (24.Ra5?! d4 25.Ra4 de3 26.fe3 Nf5+=) 24...Qa5 (24...Qc5 25.d4 ed4 26.Nd4+–) 25.Ra5 f6 26.Kf1 Ra8 27.Ra8 Ra8 28.d4 Ne4 29.de5 fe5 30.Rc1 Ra2 31.Ne5 Rb2 32.f3 Nd2 33.Ke1 d4 34.ed4 Kf8 35.Rc7 Bd5 36.Nd3 (36...Nf3 37.Bf3 Rb1 38.Kf2 Bf3 39.Kf3 Rb5 40.Nc5+–) 1–0. Drelinkiewicz,Tadeusz – Doda,Zbigniew (2405), Poland–ch33 Bydgoszcz, 1976.

7.Nc3 cb5 8.cb5 Nbd7 9.Be2 e5 10.0–0 e4 (10...a6 11.d4 e4 12.Nd2=) 11.Nd4 Bc5 (11...Ne5 12.Qc2=) 12.Na4 (12.d3 Bd4 13.ed4 Nb6=) 12...Bd6= 13.Rc1 Nb6 (13...Re8 14.Nf5 Ne5 15.Nd6 Qd6 16.h3=) 14.Nb6 (14.d3 Na4 15.Qa4 Qe7=) 14...ab6 (14...Qb6 15.Nb3=) 15.Qb3+= Bd7 (15...Qe7 16.Rfd1+=) 16.f4 (16.d3 Qe7+=) 16...h6 (16...Qe7 17.Nc2+=) 17.a4 (17.Rfd1 Qe7+=) 17...Bc5 (17...Qe7 18.Nc2+=) 18.h3 (18.d3 ed3 19.Bd3 Re8=) 18...Kh8 (18...Qe7 19.Rfd1=) 19.Rf2 (19.d3 Qe7 20.Rfd1 Rfe8+=) 19...Kg8 (19...Qe7 20.g4+=) 20.g4 (20.Nc2 Bf5+=) 20...Kh8 (20...Qe7 21.g5 hg5 22.fg5+=) 21.Rg2 White prepares g5 (21.g5 hg5 22.fg5 Nh7+=) 21...Nh7 (21...Qe7!?+=) 22.Qd5+– Nf6 23.Qb3 Rc8 (23...Kg8 24.Bc4 Rc8 25.d3+–) 24.g5 (better 24.Bc4+–) 24...Bh3? (better 24...hg5 25.fg5 Nh7+–) 25.gf6+– Bg2 (25...gf6 26.Rh2 Qd7+–) 26.fg7 (26.Kg2?! Qf6 27.Bh5 Kg8+–) 26...Kg8 (26...Kh7 27.Bg4 Qh4 A) 28.gf8Q Qh1 (28...Bf8?? 29.Qf7 Bg7 30.Bf5 Kh8 31.Rc8 Qd8 32.Rd8 Bf8 33.Rf8) 29.Kf2 Qh4 (29...Bf8 30.Qf7 Bg7 31.Bf5 Kh8 32.Rc8 Bf8 33.Qf8) 30.Kg2 Qg4 (30...Rf8?? 31.Bf5 Kg8 32.Rg1+–) 31.Kf1 Qh3 (31...Bf8 32.Qf7 Bg7 33.Qf5 Qf5 34.Nf5 Rc1 35.Bc1+–) 32.Ke1 Qh1 (32...Bf8 33.Qf7 Bg7 34.Bc3+–) 33.Ke2 Qh5 (33...Bf8 34.Qf7 Bg7 35.Qf5 Kg8 36.Rc8 Bf8 37.Qf8 Kh7 38.Qg8) 34.Nf3 Qf3 (worse 34...Rf8 35.Rf1+–) 35.Ke1 Qg3 (worse 35...Bf8 36.Qf7 Bg7 37.Qg7) 36.Kd1 A1) 36...Bf8 37.Qf7 (37.Rc8?! Qg4 38.Kc2 Qc8 39.Bc3 Qf5+=) 37...Bg7 38.Qf5 (worse 38.Rc8 Qg4 39.Kc2 Qc8 40.Bc3 Qg4+–) 38...Qg6 39.Qc8 Bb2 40.Qb7 Bg7 41.Rc7+–; A2) 36...Qg1 37.Kc2 Bf8 38.Kb1 Rc1 39.Bc1 Kg8+=; B) 28.gf8N Kg8 29.Bc8+– (29.Kg2?! Qg4 30.Kf1 Qh3 31.Ke1 Qh1 32.Ke2 Qh5 33.Nf3 Qf3 34.Ke1 Be7=)) 27.Kg2 (better 27.gf8R Kf8 28.Kg2 Qd6+–) 27...Re8 28.Nf5 Qf6 (28...Re6 29.Qe6! fe6 30.Nh6 Kh7 31.g8Q Qg8 32.Ng8 Rg8 33.Kf2 Rd8+–) 29.Bf6 Be3 (29...Re6 30.Nh6 Kh7 31.Rh1 Kg6 32.Qd5 Rf6 33.Qg5 Kh7 34.g8Q Rg8 35.Qg8) 30.Nh6 Kh7 31.Qf7 Kh6 (31...Rg8 32.f5 Rc1 33.Qg6) 32.Qh5 (32.Rh1) 1–0. GuestCKQB – GuestKYKX, freechess.org, 2016.

7.Nc3 cb5 8.Nb5 dc4 9.Bc4 a6 =+.

7.Nc3 cb5 8.cd5 a6 (8...b4 9.Ne2 Nd5 10.Rc1–/+) 9.e4? (better is 9.de6!? Be6 10.Nd4=) 9...ed5 (9...b4!? 10.Ne2 Ne4 11.de6 Be6 12.Qc2–/+) 10.e5–/+ Ne4 (10...b4 11.Ne2 Ne4 12.d3–/+) 11.d4 (11.Qc2 f5–/+) 11...b4 (11...Nc6 12.Rc1–/+) 12.Ne4 de4 13.Nd2 Bf5 (13...Nc6 14.Ne4 Qd5 15.Qf3=+) 14.Qc2 (14.f3 e3 15.Nc4 Bh4 16.g3 Bg5=+) 14...Nd7 (14...Nc6 15.Ne4 Nd4–/+) 15.Rc1? (15.Ne4 b3 16.ab3 Bb4 17.Ke2 Rc8=) 15...Qa5?? (15...Ne5 16.Ne4 Nc6 17.Rd1–+) 16.Qc4 Be6 17.d5? Ne5?? 18.Be5= Bd5 19.Qc7+= Qc7 20.Bc7 Rfe8 21.Be2 Bg5 22.Rc5 Bd2=+ 23.Kd2 Ba2 24.Rhc1 Rac8 25.Bg4 Be6 26.h3 Re7 27.Be6=+ Re6 28.Ke3 g6 29.R1c4 b3 30.Rb4 Rc6 31.Rc6+= bc6 32.Be5 Re8 33.Bd4 (33.Re4?? f5 34.Rc4 b2–+). gtate (1930) – eweram (2040), net–chess.com, 2006.

7.Nc3 dc4 8.Bc4 cb5 9.Bb5 a6 10.Be2 b5 11.a3 Bb7 12.0–0 Nbd7 13.d4 Rc8 14.Nd2 Qa5 Black prepares b4 15.Nb3 Qb6 16.Bf3 Bf3 17.Qf3 b4 (17...Rc4 18.Rfc1=+) 18.Na4= Qb5 (18...Qc6 19.Nac5 Qf3 20.gf3 Nc5 21.dc5 ba3 22.Bf6 Bf6 23.Ra3=) 19.ab4 Bb4 20.Nbc5 Nc5 21.dc5 Nd7 22.Qg4 (22.Rfb1 a5+=) 22...g6= 23.c6 (23.Rfb1 Nc5 24.Qd4 f6+=) 23...Nc5 (23...Rc6? 24.Qd4 Ne5 25.Qe5 Qe5 26.Be5+–) 24.Bf6?? (24.Nc5 Bc5 25.Rfb1 Rc6 26.Bc3–/+) 24...Na4–+ 25.Ra4? (better 25.Rfb1 a5 26.Qf4–+) 25...Qa4 26.Qf4 Rfe8 (26...Rc6?? 27.Qh6 Rfc8 28.Qg7) 27.Be5 f5 28.Qg5 (28.Qh4 Rc6 29.Qf6–+) 28...Be7 (28...Qc6?! 29.Qf6 Re7 30.Qh8 Kf7 31.Qh7 Ke8 32.Qg8 Kd7 33.Qg6–+) 29.Qh6 Bf8 30.Qg5 Bg7 31.Bg7 Kg7 32.Rb1 (32.f3 Rc6 33.Qg3 Rec8–+) 32...Qc6 33.h4 h6 34.Qg3 e5 35.f4 (35.Rd1 Qe6–+) 35...e4 (35...ef4 36.ef4 Re2 37.h5–+) 36.h5 Rb8 37.Ra1 Re6 38.Qh3 Rb2 39.g4 (39.Kh2 Qc2 40.Rg1 Qe2–+) 39…Qb5 0–1. Slobodjanac,Sinisa – Duda,Daniel, Bosnjaci Open, 2019.

7.Nc3 dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Be2 (10.0–0 Bb5 11.Nb5 Nc6=) 10...Nc6 (10...a6 11.0–0=) 11.0–0 Rc8 (11...e5 12.d4 ed4 13.Nd4=) 12.Qb1 (12.d4 a6=) 12...Na5 (12...Qa5 13.d4=) 13.d3 Qc7 (13...b5 14.Rc1=) 14.Rc1 Qb8 (14...Qd6 15.a4 Qb8 16.Ba3 Ba3 17.Ra3=) 15.Nd2 (15.d4 Rfd8=) 15...Bc6 (15...Rfd8 16.Nde4=) 16.Nb3 (16.Nce4 Be4 17.Ne4 Ne4 18.de4 Bd6=) 16...Nb3 17.ab3 Rfd8 (17...Bd6 18.h3+=) 18.d4 (18.Ne4 Ne4 19.de4 a6=) 18...a6 (18...b5 19.Bd3=) 19.Ba3 (19.Bd3!?=) 19...Ba3+= 20.Ra3 Qd6 (20...e5 21.de5 Qe5 22.Qb2+=) 21.b4 (21.Ra5 Rd7=) 21...Nd5 (21...e5 22.de5 Qe5 23.Ra5=) 22.Rb3 (22.Nd5 Qd5 23.Bf3 Qd7 24.Bc6 Rc6=) 22...b5 (22...e5!?=) 23.Ne4+= Qe7 24.Bd3?? (24.Nc5 e5 25.Bd3 Nf6+=) 24...g6?? (better is 24...Nb4 25.Nf6 Qf6 26.Rb4 Qg5 27.Bh7 Kh8 28.Rc6 Rc6–+) 25.Nc5+/– Bb7 26.Ra3 Nf6 27.Qb2 Rd6 28.Rca1 Rdc6 29.Qa2 Rb6 30.Nb7 Rb7 31.Ra6+= Qb4 32.Rb1 Qc3+= 33.Ra3 Qc6 34.Rab3 b4 35.Rb4 Rb4 36.Rb4 Qc1 37.Bf1 Rc2 38.Qa8? Kg7–+ 39.Qf3 Qe1 40.Rb7 Rc1 41.h3 Qf1 42.Kh2 Qa6 43.h4 Qc6 44.Qc6 Rc6 45.Rb2 h5 46.Kg3 Ne4 47.Kf4 Nd6 48.Ra2 Rb6 49.Rc2 Rb5 50.Rc5? Rb2 51.Kf3 Nf5 52.g3 Nh6 53.e4 Ng4 54.Kg2 Rf2 55.Kg1 Re2 56.e5 Re4 57.Rc1 Rd4 58.Re1 Rd5 59.Kg2 Ne5 60.Re2 Nc6 0–1. Bartle,Georg – Lueders,Guenther (1665), GER–chA Seniors, 2004.

7.Nc3 dc4 8.Bc4 cb5 9.Nb5 a6 10.Nbd4 b5 11.Bb3 Bb7 12.Rc1 Nbd7 13.Nc6 Bc6 14.Rc6 Qb8 15.0–0 Rc8 16.Qc2 Rc6 17.Qc6 Qc8 18.Rc1 Qc6 19.Rc6 h6 20.Bd4 a5 21.Bc2 a4 22.Kf1 b4 23.Ke2 Nd5 24.e4 N5f6 25.d3 g6 26.h3 Kf8 27.Rc4 Ke8 28.Kd2 Bd6? (better is 28...h5+=) 29.e5+– (29.e5 Ne5 30.Ne5+–) 1–0. Rooijen Van,Peter (1655) – Miklos,Tibor, RB–2009–0–00073, 2009.

7.Nc3 dc4 8.Bc4 cb5 9.Nb5 (9.Bb5 a6 10.Be2 b5=+) 9...a6 10.Nbd4 b5 (10...Bd6 11.Qc2=+) 11.Bb3 (11.Bd3 Bb7=+) 11...Bd7 (11...Qd6 12.Rc1=+) 12.Ne5= Qc7 (12...Ra7 13.0–0=) 13.f4 a5 (13...Rc8 14.Rc1 Qd6 15.Nf5 Rc1 16.Ne7 Qe7 17.Qc1+=) 14.Bc2 (14.Qf3 Na6+=) 14...Na6 15.Nd7 (15.Rc1 Qd6=) 15...Qd7 16.Bd3 (16.0–0 Nb4=) 16...Nc7 (16...Rab8 17.0–0=) 17.0–0 Bc5 (17...a4 18.Rb1=) 18.Qe2 (18.Rc1 Bd4 19.Bd4 Rfc8+=) 18...Rfb8 (18...Rfd8 19.Rac1 (< 19.Nb5 Nb5 20.Bb5 Qd2=+) 19...Bb6 A) < 20.Nb5 Nb5 21.Bf6 Qd3–/+ (21...gf6?! 22.Bb5 Qd2 23.Rfe1=); B) < 20.Bb5 Nb5 21.Nb5 Qd2–/+; C) 20.g4=) 19.Rac1+= Bd4 (19...Qd5 20.Rc2+= (< 20.Nb5 Nb5 21.Bf6 gf6=)) 20.Bd4+/– Ncd5 21.f5 Nb4 22.Bb1+/– Nfd5? 23.Qh5 Nf4?? 24.Rf4 e5 25.f6 h6 26.Rg4 Qe6 27.Rg7 (27...Kf8 28.Rc7 Qe7 29.Re7 ed4 30.Qf7#) 1–0. Buss,Michael D – Alvarado, corr USCF, 1985.

7.Nc3 Bd6 8.Be2 (8.d4 dc4 9.Bc4 a6=) 8...Re8 (8...dc4 9.Bc4 a6 10.a4=) 9.Qc2 (9.cd5 ed5 10.bc6 bc6=) 9...e5 (9...dc4 10.e4 e5 11.Bc4=) 10.cd5 cd5 11.d3 (11.0–0 e4 12.Nd4 Be5=) 11...Bg4=+ 12.0–0 Nbd7 13.Rfc1 (13.h3 Bh5=+) 13...Rc8=+ 14.Qd1 Qe7 15.a4 (15.h3 Bf5=+) 15...Nc5 (15...d4 16.ed4 ed4 17.Ne4 Rc1 18.Bc1 Ne4 19.de4 Qe4 20.Kf1–+) 16.h3 (16.d4 ed4 17.Qd4 Qe6=) 16...Bf3 17.Bf3 d4 (17...e4 18.Bg4 Ng4 19.Qg4–/+) 18.ed4= ed4 19.Ne2 Qe6 (better is 19...Qe5!? 20.g3 Qf5 21.Nd4 Qh3=) 20.Bd4 Nb3 (20...Nfd7!?+/–) 21.Rc8+– Rc8 22.Bf6 Na1? (better is 22...Qf6 23.Bb7 Rd8+/–) 23.Ba1+– b6 24.Ng3 Bg3 25.Bg4?? Qa2?? 26.fg3 Rc2 27.Bf3 Qa4 28.Bc6?? Qa2 29.Qf1?? a6?? 30.Bf3 ab5 31.Qe1 Rc8? 32.Kh2 Qa3 33.Qe5 f6?? 34.Qe6 (34...Kf8 35.Qc8 Ke7 36.Bc3+–) 1–0. Skaug,Thorbjorn – Soliman,Thomas, Klubbmesterskap, 2002.

7.bc6 bc6 8.cd5 cd5 9.Be2 Nc6 10.0–0 Rb8 11.Be5 Ne5 12.Ne5 Qd6 13.d4 Nd7 14.Nd7 Bd7 15.Nd2 Bb5 16.Nf3 Be2 17.Qe2 Rb6 18.Ne5 Bd8 19.Rfc1 Bc7 20.f4 Rfb8 21.Qh5 g6 22.Qg4 Rb2 23.h4 (23.Qg3 f6 24.Ng6 hg6 25.Qg6 Kf8 26.Qf6 Ke8 27.Qg6 Ke7 28.Qg7 Kd8 29.Qf6 Kc8 30.Qh8 Qd8=) 23...Bd8 24.h5 Kg7 (24...Qa3 25.Qg3–/+) 25.hg6 hg6 26.Rc6 (26.a4 Ba5 27.Rc6 Qe7–/+) 26...Rb1 (better is 26...Qa3!? 27.Qf3 Ra2 28.Ra2 Qa2–+) 27.Rb1= Rb1 28.Kh2 Qf8 29.Re6 Qh8 30.Kg3 Qh4! 31.Qh4 Bh4 32.Kh4 fe6 33.Kg5 Rb2 34.g4 White prepares the advance f5 34...Ra2 35.Ng6 a5 36.Ne5? (36.Ne7 a4 37.f5 Rf2 38.f6 Rf6–+) 36...Ra3 (better is 36...a4!? 37.Nd3 a3 38.Nc1–+) 37.Nd7 Re3 38.f5? (better is 38.Nc5–+) 38...ef5 39.gf5 (39.Nb6 Rb3 40.Na4 fg4 41.Kg4–+) 39...a4 40.f6 Kf7 41.Ne5 Re5! 42.de5 a3 43.Kf5 a2 44.e6 Kf8 45.Kg6 (45.Ke5 a1Q 46.Kd5 Qf6–+) 45...a1Q 46.e7 Ke8 0–1. mr5reasons1 (1695) – skunk_77 (1695), gameknot.com, 2012.

7.d4 a6 8.ba6 b6 9.Ba3 =+.

7.d4 Ne4 8.Nc3 (8.Nbd2 Qa5=+) 8...Bb4 (8...cb5 9.cb5 Qa5 10.Rc1=) 9.Qb3= Qa5 10.Rc1 cb5 11.cd5 a6 12.Bd3 Nc3 (12...ed5!? 13.0–0 Nc3 14.Bc3 Nc6=) 13.Bc3+= Bc3 14.Rc3 (14.Qc3 Qc3 15.Rc3 ed5+=) 14...ed5 15.0–0 Be6 16.Rfc1 (16.Qc2 h6+=) 16...Nc6= 17.a3 (17.Rc5 Rac8=) 17...h6 18.Rc5 Ne7 (18...Rac8 19.Bb1=) 19.Qb4 (19.Ne5 Rfc8=) 19...Qb4=+ 20.ab4 b6 (20...Nc6 21.Rb1=+) 21.Rc7= Rac8 22.Ne5 Rc7 23.Rc7 Re8 24.Rb7 Nc8 25.Nc6 Kf8 26.Be2 Ne7 27.Ne7 Re7 28.Rb6 Ra7 29.Bf3 Ke7= 30.Rc6 Kd7 31.Rc5+= Rc7 32.Kf1 Rc5 33.bc5 Kc6 34.Ke1 b4 35.Be2 a5=+ 36.Kd2 Bf5 37.Kc1 a4=+ 38.Kb2 a3 39.Kb3 Bb1 40.h3 a2–/+ 41.Kb2 b3 42.g4 f6 (42...g5 43.Bd1 Bc2 44.Bf3–/+) ½–½. Van Esbroeck,Dirk – Vander Meulen, Melsele, 1993.

7.cd5 cd5 8.Be2 Bd7 9.0–0 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Qe8 13.Nc3 Bb4 14.Qb3 Bc3 (14...Qe7!?+=) 15.Bc3+– (15.Qc3?! Bb5 16.d3 Qe7=; 15.dc3?! Qe7+–) 15...Qd8 16.Ne5 (16.Bd4 Bc8+–) 16...Ne4 (16...Qc7 17.Rc1+–) 17.Bb4 Re8 18.f3 Nf6 19.Rc1 Bc8 20.Qb2 Nbd7 21.d4 Ne5 22.de5 Nd7 23.Bd6 f6 24.Bc7 Qe7 25.Bd6 Qf7?? (better 25...Qd8=) 26.Rc7+– fe5? (better 26...Qg6+–) 27.Qc1 (27.Be5?! Qf8+–) 27...e4 28.fe4 Qf6 (28...b6 29.Rc8 Nf6 30.e5+–) 29.Rc8 Rc8 (29...Qf7 30.ed5 ed5 31.Bf3+–) 30.Qc8 Kf7 (30...Nf8 31.Bf8 Qf8 32.Qe6 Qf7 33.Qc8 Qf8 34.Qb7 Qb4 35.Qc8 Kf7 36.Qf5 Ke8 37.Qe6 Qe7 38.Qe7 Ke7+–) 31.Qd7 Kg6 32.Qe8 Kh6 (32...Qf7 33.Bh5! Kh5 34.Qf7 Kg4 35.Be7 g5 36.Qf3 Kh4 37.Qh3) 33.Qh5 1–0. DEFFM – GuestGDFL, freechess.org, 2018.

7.cd5 cd5 8.Be2 Bd7 9.a4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Ba1 Bc8 (12...Qa5 13.0–0+=) 13.d4 (13.0–0 Nbd7+=) 13...Nbd7 (13...b6 14.0–0=) 14.0–0+= Nb6 (14...b6 15.Qb3=) 15.Qb3 Bd7 (15...Qc7 16.Bb2+=) 16.Ne5 Qc7 17.Nd7 (17.Rc1!?+=) 17...Qd7= 18.Bb2 Rc8 19.Ra1 Nc4 20.Ra4 (20.Bd3 Bd6=+) 20...Nb2 21.Qb2 Qc7 22.Na2 (22.Nd1 Ne4=+) 22...g6 (22...Nd7 23.g3=+) 23.h3 (23.Ra7 Qb6 24.Ra4 Bd6=+) 23...Ne4 (23...Qc2 24.Qc2 Rc2 25.Bf1–/+) 24.Bd3 Nd6 (24...Kg7 25.Ra7=+) 25.f3 (25.Qb1 Kg7=+) 25...Qb6 (25...Kg7 26.Qd2–/+) 26.Nc3=+ Ne8 (26...Kg7 27.Qb3=+) 27.Ra1 (27.Ra2 Nf6=+) 27...Qc7 28.Rc1 (28.Ne2 Nd6=+) 28...Qb8 (28...Nd6 29.Qa2=+) 29.Ne2 (29.Na4 Rc1 30.Qc1 Nd6=+) 29...Rc1 (29...Nd6 30.Rc8 Qc8 31.Qc1=+) 30.Qc1= ½–½. Van Esbroeck,Dirk – Ciesla,Daniel, SF–2009–0–00032, 2009.

7.cd5 ed5 8.Nc3 Bg4 (8...c5 9.Qc2=+) 9.h3 (9.Be2 cb5 10.Nb5 Nc6=) 9...Bf3 (9...Be6 10.Bd3=) 10.Qf3= Nbd7 11.Be2 (11.bc6 Ne5 12.Qf5 Nc6=) 11...Re8 (11...Qb6 12.a4=) 12.0–0 Ne4 (better is 12...Ne5!? 13.Qf5 Bd6=) 13.Ne4+/– de4 14.Qe4 Bf6 15.Qb1 Rb8 (15...c5 16.Rd1+/–) 16.Rc1 (16.d4 c5 17.Rd1 cd4 18.Bd4 Bd4 19.Rd4 Qe7+–) 16...Bb2 17.Qb2 Qf6 (17...cb5!? 18.Qb5 a6+/–) 18.Qf6+– Nf6 19.bc6 bc6 20.Bf3 Rb2 21.d4 a5 22.Rc6 h6 23.Rc5 a4 24.Bc6 a3 25.Be8 Ne8 26.Rc8 Kf8 27.Ra8 Ke7 28.Ra3 Nd6 29.Ra7 Kf6 30.a4 Nc4 31.a5 Nd2 32.a6 Ne4 33.Rb7 Rf2 34.a7 Re2 35.a8Q Ng3 36.Ra5 (36...Re3 37.Rb6 Re6 38.Qf3 Kg6 39.Qg3 Kh7 40.Re6 g6 41.Rg6 fg6 42.Qc7 Kg8 43.Ra8#) 1–0. cgits (2560) – purplepeace (2170), net–chess.com, 2005.

7.cd5 ed5 8.bc6 bc6 9.Be2 Bf5 10.0–0 Qb6 11.Bd4 (11.Qc1 c5=) 11...c5+= 12.Bf6 Bf6 13.d4 c4 (13...Qb2 14.Nbd2 cd4 15.Nd4 Bd4 16.ed4 Qd4 17.Nb3 Qd1 18.Rad1+= (worse is 18.Bd1 Bd3–/+)) 14.Qd2 Nc6 15.Nc3 Qd8 16.a3 Re8 17.Ne1 Na5 18.Ra2 (better is 18.Bd1!?–/+) 18...Nb3–+ 19.Qd1 (better is 19.Qb2 Rb8 20.Bf3 Nd4 21.Qd2–+) 19...Rb8?? (better is 19...Qa5 20.Nb1 Bb1 21.Qb1 Nd2 22.Rd2 Qd2–+) 20.Nc2 Qd7 (20...a5 21.Bf3 Be6 22.Qe2+=) 21.Na1 (better is 21.Nb4!? Be6 22.Bf3+=) 21...Na5 22.Qa4 Qa4 23.Na4 Rb7 24.Nc5 Rb5 25.g4 Bb1 26.Rd2 Bg6 27.Nd7 (better is 27.Bf3!?+=) 27...Be7–+ 28.a4 Rb4 29.Bd1? (better is 29.Bf3–+) 29...c3 30.Ra2 (30.Rc2 Bc2 31.Bc2 Bd6–+) 30...Rb2 31.Rb2 (31.Bb3–+) 31...cb2 32.Bc2 ba1Q 33.Ra1 Bc2 0–1. rayfranke (2485) – snowcert (2510), net–chess.com, 2016.

7.Be2 a6 8.a4 Bd7 9.Nc3 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Qb1 Bb4 13.Ne5 Be8 14.0–0 Nbd7 15.Nd3 Bd6 16.Nc1 dc4 17.bc6 bc6 18.Bc4 Bh2 19.Kh1 Qh5 20.Rd1 Ne5 21.Be2 Qh4 22.Ba6 Nf3 23.g3 Bg3 24.Kg2 Qh2 25.Kf3 Qf2 0–1. Bennett – Rayner, 1996.

7.Be2 a6 8.ba6 b6 (8...Na6!? 9.cd5 ed5–/+) 9.cd5= cd5 10.0–0 Ba6 11.Nc3 Nc6 12.Ba6 Ra6 13.Qe2 Qa8 14.e4 (14.Rfc1 Rc8=) 14...Nb4 (14...de4 15.Ne4 Ne4 16.Qe4+=) 15.ed5 (15.e5 Ne4+=) 15...Nbd5+= 16.Nd5 Nd5 17.Qc4 (better is 17.Rfc1!?+=) 17...Ra4–+ 18.Qc2 Rc8 19.Bc3 (19.Qd3 Nf4 20.Qd7 Bc5–+) 19…Bf6 0–1. Kappel,Ray D (2005) – Mogstad,Ola P (1975), corr WS/H/198 ICCF, 2009.

7.Be2 a6 8.cd5 ed5 9.bc6 Nc6 +=.

7.Be2 cb5 8.cb5 a6 9.Nc3 ab5 10.Nb5. gtate (1715) – calculus (1715), net–chess.com, 2002.

7.Be2 cb5 8.cb5= Nbd7 9.0–0 b6 (9...Bd6 10.Nc3=) 10.d4 Bb7 11.Nbd2 Rc8 (11...Bd6 12.Qa4=) 12.Qa4+= Ra8 13.Rac1 (13.Ba3 a5+=) 13...Nb8 (13...a6 14.Rc2=) 14.Qc2 (14.Ne5 a6+=) 14...Bd6 15.Bd3 (15.Nb1 Nbd7=) 15...a6= 16.e4 (16.a4 ab5 17.ab5 Qe7=) 16...de4 17.Ne4 Ne4 18.Be4 Be4 19.Qe4 Nd7 20.d5 Nf6 (20...Re8 21.de6 Re6 22.Qg4=+) 21.Bf6 Qf6 22.de6 Qe6 23.Qe6 fe6 24.Rc6 Bc5 25.Ng5 (better is 25.Re6!? ab5 26.Re2+=) 25...ab5=+ 26.Ne4 Bd4 27.Re6 Ra2–/+ 28.Rd6 Bc5 29.Rd5 Rc2 30.Rd2 Rd2 31.Nd2 b4 32.g3 Re8 33.Nb3 Re2 34.Nc1 Rc2–+ 35.Nd3 Rd2 36.Nc1 Rc2 37.Nd3 b3 38.Rb1 Rc3 39.Nb2 Bd4 40.Nd1 Rd3 41.Kf1 b2 42.Ke2 Ra3 43.Kd2 Ra1 44.Kc2 Rb1 45.Kb1 Kf7 46.f3 Ke6 47.h3 Kd5 48.Kc2 b5 49.g4 Ke5 50.h4 Kf4–+ 51.h5 Kf3 52.g5 Kf4 53.h6 g6 (54.Kb1 Kg5–+) 0–1. Rohde,Angela – Lehmann,Sandra, BL2 Mitte, 1992.

7.Be2 cb5 8.cb5 Nfd7 9.Nc3 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 Nf6 13.0–0 Nbd7 14.Rc1 Nc5 15.Rc2 b6 16.d4 Nce4 17.Ne4 Ne4 18.Ne5 Bd7 19.Qa7 (19.Nd7?! Qd7 20.Qa6 Rb8+=) 19...Nd6?? (better is 19...Be8+/–) 20.Nd7+– Qd7 (20...Nc8 21.Qb7 Re8+–) 21.Qd7 (21.Qd7 Nf5 22.g4 Ne3 23.fe3+–) 1–0. usingprogram (2025) – eutychus, kurnik, 2012.

7.Be2 Bd7 8.0–0 dc4 9.bc6 Nc6 10.Bc4 Qb6 (10...Rb8 11.Nc3=) 11.Qc2 (11.Bf6 Bf6 12.d4 e5=) 11...Rac8 12.Qb3 (12.d3 Na5=+) 12...Qc7 13.Bd3 (13.Bc3 a6=+) 13...Rfd8 (13...e5 14.Na3–/+) 14.Rc1=+ Qb8 (14...Qd6 15.Bc2=+) 15.Qd1 (15.Ba3 Ne5 16.Rc8 A) < 16...Bc8 17.Ne5 Ba3 18.Nc6+= (18.Qa3?? Qe5 19.Nc3 Rd3–+; 18.Na3?! Qe5 19.Rc1 Qa5=); B) 16...Rc8=+) 15...Nb4 (15...e5 16.Ng5 h6 17.Ne4=+) 16.Be2=+ Bc6 17.d4 Bd6 18.Nbd2. pumpkin (1675) – paua, net–chess.com, 2001.

7.Be2 Bd7 8.a4 a6 9.Nc3 ab5 10.ab5 Ra1 11.Qa1 dc4 12.bc6 (12.Bc4 Qb6=) 12...Bc6 (12...Nc6 13.Bc4 Na5 14.Be2=+) 13.Bc4 Bf3 14.gf3 Nc6 15.Ne4 Nb4 (15...Ne4 16.fe4 Bb4 17.Bg7 Qd2 (17...Bd2?? 18.Ke2 Be3 19.fe3+–) 18.Kf1 Rd8=+) 16.Nf6+= Bf6 17.Bf6 Qf6 18.Qf6 gf6 19.Ke2 (19.Rg1 Kh8+=) 19...Rb8 (19...Rc8 20.d3 Kf8 21.Rb1+/–) 20.Rb1 Nc6 21.Bb5 (21.d4 Kg7+=) 21...Ne5 (21...Ra8 22.Bc6 bc6 23.Rc1+=) 22.d4+/– Ng6 23.Kd3 (23.f4 Kg7+=) 23...Ne7 (23...f5 24.Rb3+=) 24.Rc1 ½–½. algernon (2295) – rgiarrocco (2275), net–chess.com, 2005.

7.Be2 Nbd7 8.d4 (8.cd5 cd5 9.0–0 a6=) 8...Ne4 (8...dc4 9.bc6 bc6 10.Bc4=) 9.0–0 f5 (9...cb5 10.cd5 ed5 11.Bb5=) 10.bc6 (10.Qb3 a6+=) 10...bc6= 11.c5 (11.Nc3 Bb4 12.Qc2 Ba6=) 11...Rb8 12.Qc2 g5 (12...e5 13.Nbd2=) 13.Nbd2+= g4 14.Ne1 (better is 14.Ne5 Ne5 15.Ne4 Nf3 16.gf3 gf3 17.Nf6 Bf6 18.Bf3=) 14...Ndf6 (14...Ndc5 15.Ba3 Nd2 16.Qd2–/+) 15.f3 (15.Rb1 Nd2 16.Qd2 Ne4+=) 15...gf3= 16.Bf3 (16.Ndf3 Ng4 17.Bc1 Qc7=) 16...Qe8 (16...Ba6 17.Ne4 Ne4 18.Be2 Nc5 19.Ba6 Na6 20.Nd3=+) 17.Nd3= Kh8 (17...Ba6 18.Rab1=) 18.Ne5+= Rg8 (18...Ba6 19.Rfb1+=) 19.Ne4 (better is 19.Rfb1+=) 19...Ne4?? (better is 19...de4 20.Be2 Nd5=) 20.Qe2?? (better is 20.Be4 Rb2 21.Qb2 de4 22.Nc6+–) 20...Rg7 0–1. secgestor – jasonSIACC (1650), internet, 2007.

7.Be2 Ne4 8.0–0 f5 9.a4 Nd7 10.Nd4 Ndf6 11.bc6 Qb6 12.cb7 Qb7 13.Ba3 Rb8? (better is 13...e5 14.Nf3 Ba3 15.Na3 Qe7+/–) 14.Be7+– Qe7 15.Nc6 Qd6 16.Nb8 Qb8 17.Qc2 Ba6 18.d3 Ng5 19.c5 f4 20.ef4 Qf4 21.Nd2 e5 22.Nb3 e4 23.de4 Be2 24.Qe2 de4 25.Qe3 Qg4 26.h3 Qh5 27.Nd4 Nd5 28.Qb3 Nf3 (28...Kh8+–) 29.Nf3 (worse is 29.gf3 ef3 30.Rfd1 Kh8+–) 29...ef3 30.Rfd1 Rd8 31.Rd4 1–0. algernon (2390) – fischerjunior (2430), net–chess.com, 2013.

7.Be5 cb5 8.cb5 Nbd7 =+.

7.Ne5 dc4 8.bc6 Nc6 9.Nc6 bc6 10.Bc4 Qb6 (10...Rb8 11.Qc2=+) 11.Qb3 (11.Qc2 Ba6 12.Ba6 Qa6=) 11...Rb8 (11...Ba6 12.Bd4 c5 13.Be5=+) 12.Be5= Ra8 13.Nc3 (13.Qc3 Ba6=) 13...Ba6 (better is 13...Qa5 14.Bg3 Ba6=) 14.Be6 (better is 14.Qa4!? Bc4 15.Qc4=) 14...fe6–/+ 15.Qe6 Rf7 16.Rb1 Qd8 (16...Qc5 17.Bf6 gf6 18.Rc1–+) 17.Qc6 Qc8 (17...Bd3 18.Qa8 Qa8 19.Rb8 Qb8 20.Bb8–+) 18.Qc8=+ Rc8 19.f4 (19.f3 Bd3 20.Rb2 Bc5=+) 19...Bd3–/+ 20.Rb8 (20.Rb3 Kf8–/+) 20...Rb8 21.Bb8 Bb4 22.Kf2 Bc3 23.dc3 Rb7 24.Be5 Rb2 25.Kg3 Be4 26.Rg1 Ra2 27.c4 Rc2 28.Bd4 Rc4 29.Ba7 Rc2 30.Bd4 Kf7 31.Kh3 h5 32.Bf6 Kf6 33.g4 hg4 34.Kg4 Rh2 35.Ra1 Rg2 36.Kh3 Re2 37.Ra6 Kf7 38.Ra3 g6 39.Kg4 Ke6 40.Kg5 Rg2 41.Kh4? Bf5 42.Ra6 Kd5 43.Ra5 Ke4 44.Ra4 Ke3 45.Ra3 Kf4 46.Rf3 Ke5 47.Re3 Kf6 48.Re6= Kg7 49.Re7 Kh8 50.Re8 Kh7 51.Re7 Kg8 52.Re8 Kf7 ½–½. Streit,Bodo (1750) – Oelke,Bernd (1810), Landesliga West2, 2002.

7.Ne5 Qc7 8.a4 Nbd7 9.f4 Ne4 10.Nf3 Bd6 11.Be2 e5 12.fe5 Ne5 (worse is 12...Be5 13.Ne5 Ne5 14.cd5 cd5 15.0–0+=) 13.Ne5 Be5 14.d4?? (better is 14.Be5 Qe5 15.Na3–/+) 14...Bg3 15.Kf1 Nf2 16.Qc1 Nh1 17.hg3 Ng3 18.Ke1 0–1. Radwan,Jan (1690) – Koszela,Stanislaw (1925), Mistrzostwa Polski w Szachach Niepelnosprawnych Poland, 2009.

7.Nc3 Nbd7

8.Rc1 Qa5 9.Qc2 (9.cd5 cd5 10.Be2 e5=) 9...Nc5 (9...e5 10.cd5 cd5 11.Be2=) 10.Ng5 (better is 10.d4 Nce4 11.Ne5 cb5 12.cb5=) 10...h6?? (better is 10...Rd8=) 11.h4?? (better is 11.Nd5 ed5 12.Bf6+–) 11...hg5–+ 12.hg5 Nfe4 13.f3? (better is 13.d4!? Nd7 14.Bd3–/+) 13...Ng5–+ 14.f4 (14.cd5 ed5 15.d4 Nd7–+) 14...Nge4 15.Qd1 (15.g4–+) 15...g6 (better is 15...Ng3 16.Rh3 Nf1–+) 16.Ne4+– f5 17.Nc5 Bc5 18.Qf3 (better is 18.cd5!? Qa2 19.Qc2+–) 18...Qa2+/– 19.Be5 (19.Qh3 Kf7 20.Qh7 Ke8 21.Qg6 Kd8 22.Bf6 Rf6 23.Qf6 Be7 24.Rh8 Kd7 25.Rh7+–) 19...Bb4+= 20.Rd1 dc4?? (better is 20...Kf7+=) 21.Qg3+– Kf7 22.Rh7 Ke8 23.Qg6 Kd8 (23...Rf7 24.Qf7 Kd8 25.Bc7) 24.Qg5 (24.Bc7) 24...Ke8 (24...Rf6 25.Qf6 Ke8 26.Qf7 Kd8 27.Bc7) 25.Qg6 (25...Kd8 26.Bc7#; 25.Qh5 Rf7 26.Qf7 Kd8 27.Bc7#) 1–0. Campe,Ulrich – Prix,Siegfried, Berlin Eckbauer op, 1999.

8.Rc1 a6 9.bc6 bc6 10.d4 =.

8.bc6 bc6 9.d4 Rb8 =+.

8.d4 cb5 9.cb5 Nb6 10.Bd3 =.

8.d4 Re8 9.Qb3 (9.c5 Qa5=) 9...Qc7 (9...a6 10.cd5 ed5 11.bc6 bc6 12.Be2=) 10.Be2 (10.Rc1 Rb8=) 10...h6 (10...a6 11.a4=) 11.a4 (11.Rc1 Qa5+=) 11...Rb8 (11...dc4 12.Bc4 Nb6 13.Bd3+=) 12.a5 (12.0–0 dc4 13.Bc4 Rd8+=) 12...dc4= 13.Bc4 Nd5 (13...Qd8 14.0–0+=) 14.0–0 N7f6 (14...Nc3 15.Bc3 cb5 16.Bb5+=) 15.Bd5 (15.Rfc1 Bd7+=) 15...ed5= 16.b6 (16.Ba3 Bd8+=) 16...ab6 (16...Qd8 17.Ba3=) 17.ab6+= (< 17.Qb6 Qb6 18.ab6 Nd7–/+) 17...Qd8 18.Ba3 Bf5 (18...Bg4 19.Ne5+=) 19.Be7 Re7 20.Ne5 (20.Ra7 Qd6+=) 20...Nd7 21.Nd7+= Qd7 22.Na4 Qe6 23.Nc5 Qg6 24.f3 h5 25.Qa3 Rbe8= 26.Rae1 Qg5 27.f4 Qg6 28.Rf3 Bg4 29.Rf2 h4 30.Qc3 Bf5 31.Kf1 Qd6 32.Kg1 Kh8 33.Qd2 Qd8 34.Na4 Qa8 35.Nc5= Qd8 36.Qb4 Bc8 37.Qb3= Bf5 38.Ra2 Qd6 39.Ra3 Qf6 40.Qb2 Qg6 41.Qf2+= Qf6 42.Ra7 Bc8 43.h3 g6 44.Nd3 Kg7 45.Ra4 Qf5 46.Ra3 Rh8 47.Ne5 f6 48.Nf3 Qh5 49.Ra7 Bf5 50.Rc1 Kf7 51.Rca1 Bc8 52.Ra8+/– Rhe8 53.R1a3 Rh8 54.Rb8 Qf5+= 55.Rb3 Qh5 56.Qf1 Bf5 57.Rh8+= Qh8 58.Qf2 Be4 59.Qh4 Qa8 60.Qf2 Qa5 61.Ne1 Qa1 62.Qd2 Re8 63.Rb2 Ra8= 64.Kf2 Ra4 65.g4 Rc4 66.Ra2 Qb1 67.Qb2 Qd1?? 68.Ra1 Rb4 1–0. Freiberger,Jonas – Tannebaum,Guenter, Werther Schloss op–B 6th, 2000.

8.cd5= cd5 9.d4 Bb4 (9...Qa5 10.Bd3=) 10.Bd3 Ne4 (10...Qa5 11.Qb3=) 11.Be4 (11.Rc1 Qa5 12.Qb3 Ndf6+=) 11...de4= 12.Nd2 f5 13.0–0 Rf6 (13...a6 14.Qa4 Qa5 15.Qb3=) 14.Qb3+= Bd6 15.Nde4 fe4 16.Ne4 Bc7 (16...Qb6 17.Nf6 Nf6 18.a4+=) 17.Nf6+= Nf6 18.Qd3 (18.Rfc1 Qd6 19.f4 Bd7+=) 18...b6 19.Rfc1 Bb7 (19...a6 20.Qc2 Ra7 21.a4=) 20.Qc4= Nd5 21.e4 Qh4 22.ed5 Bh2 23.Kf1 Rf8 (23...Bd5 24.Qd3 Rf8=+) 24.Rc2 (24.Qe2 Bd5 25.Qe3=) 24...Bd5=+ 25.Qc3 Bg3 26.Qe3 Qh2 27.Ke2 Rf2 28.Kd3 Rc2 29.Kc2 Qg2 30.Qd2 (30.Kc3!? e5 31.de5=+) 30...Be4–+ (31.Kc3 Qf3 32.Kb4 Bd6 33.Ka4 Qf5–+) 0–1. Kokorin – Zhirnov, corr Russia, 1994.

8.Be2 Nb6 9.d3 Bd7 (9...dc4 10.dc4 Qc7 11.0–0=) 10.0–0 Rc8 11.a4 dc4 12.dc4 cb5 13.cb5 (13.ab5 Nc4 14.Bc4 Rc4=) 13...Nc4 14.Bc4 Rc4 15.Ne5 Rc7 16.Qb3 Bd6 17.Ne2 Qe7 18.Rfd1 Rfc8 19.Ba3 Ba3 20.Qa3 Qa3 21.Ra3 Be8 22.f3 (22.Rad3 Rc5 23.f4 a6 24.ba6 ba6=+) 22...Rc2 (22...a6 23.Nd4=) 23.Nd4+= R2c3 24.Rda1 (24.Rc3 Rc3 25.Nd3 Nd5=) 24...Nd5 (24...Nd7 25.Nd7 Bd7 26.f4=) 25.Rc3 (25.e4 Nf4+=) 25...Rc3= 26.e4 Ne3 27.Kf2 Nc4 28.Ne2 Rc2 29.Nd3 Na5 (29...Nb6 30.Ra3+=) 30.Rc1 Rc1 31.Nec1 Kf8 32.Ke3 Ke7 33.Kd4 Kd6 34.e5+/– Kc7 35.Nc5 Kb6 36.Ne4 a6 37.Nd6 Bd7 38.Nf7 ab5 39.ab5 Kb5 40.Nd6 Ka4+= 41.Nd3 Nb3 42.Kc3 b5 43.Ne4 Ka3 44.Nb4 Bc8 45.Nc2 Ka4 46.h4 Nc1 47.Nc5+– Ka5 48.Nd4 Kb6 49.Nce6 b4 50.Kb4 Nd3 51.Kc4 Ne5 52.Kd5 Ng6 53.g3 Ne7 54.Kd6 Ng8 55.Ng7 Nh6 56.Nde6 Nf7 57.Ke7 Ne5 58.f4 Ng4 59.f5 Kc6 60.f6 Kd5 61.f7 Ne5 62.Nf4 (62…Ke4 63.f8Q+–) 1–0. Schulze,Harald (2095) – Frieser,Klaus (2165), Landesliga N Bayern, 1995.

8.Be2 dc4 9.bc6 bc6 10.Bc4 =.

8.Be2 Qc7 9.a4 Nb6 10.d3 Rd8 11.cd5 Nbd5 12.Nd5 cd5 13.0–0 b6 14.Rc1 Qb7 15.Qb3 Nd7 16.Nd4 Nc5 17.Qa2 Bd7 18.Ba3 Rac8 19.Nc6 (19.Nf3 Bf6 20.d4 Ne4+= (20...Na4? 21.Qb3+–)) 19...Bc6= 20.bc6 Rc6 (20...Qc6 21.d4 Qa4 22.dc5 Rc5+=) 21.d4+/– Na4 (21...Bd6!? 22.Qc2 Qb8+/–) 22.Be7+– Rc1 23.Rc1 (23.Bd8?! Nc3 24.Ba6 Na2 25.Bb7 Rc2+/–) 23...Qe7 24.Qa4 g6 25.Qc6 Rd7 26.Bb5 Rb7 27.Ba6 Rd7 28.g3 h5 29.h4 Kg7 30.Kg2 Rd6 31.Qb5 Qd8 32.Qb4 Rd7 33.Qc3 g5 (33...Qe7 34.Bb5 Rd8 35.Qa1+–) 34.Qc8 (34.Bc8 Re7 35.hg5 a5+–) 34...Qe7? (better is 34...gh4 35.gh4 Qc8 36.Rc8 Re7+–) 35.hg5 Rd8 36.Qc7 Qg5 37.Qa7 h4 38.Bd3 hg3 39.Rh1 (39.fg3?! Qe3 40.Rf1 Rf8+/–; worse is 39.Qb6 Rh8 40.Qd6 Rh2 41.Kg1 Rh3+–) 39...gf2 (39...Rh8 40.Rh8 gf2 41.Kf2 Qf6 42.Ke2 Kh8 43.Qb6+–) 40.Kf2 Kf6 (40...Qf6 41.Ke2 Rf8+–) 41.Rh7 Qg8 (41...Rf8 42.Rh3+–) 42.Qc7 (better is 42.Rh6 Kg5 43.Qe7 Kh6 44.Qf6 Qg6 45.Bg6 fg6 46.Qd8+–) 42...Ra8 (42...Qf8 43.Qf4 Ke7+–) 43.Qe5 (43.Rh6 Qg6 44.Bg6 Kg7 45.Rh7 Kg6 46.Qf7 Kg5 47.Qh5 Kf6 48.Rf7) 43...Ke7+– 44.Qg7 (better is 44.Rg7 Qf8 45.Bg6+–) 44...Ra2 45.Kf3 Qg7 46.Rg7 Ra3 47.Ke2 Ra2 48.Kd1 Ra3 49.Kd2 Ra2 50.Bc2 b5 51.Rg1 Kd6 52.Rb1 Kc6 53.Kc3 Ra3 54.Bb3 Ra8 55.Kb4 f6 (55...Kb6!? 56.Rf1 f5 57.Rg1+–) 56.Rc1 Kb6 57.Rc2 f5 58.Rc5 Ra1 59.Rb5 Ka6 (59...Kc6 60.Ba4+–) 60.Rc5 Kb6 61.Rc3 Re1 62.Ba4 Rb1 63.Ka3 Ra1 64.Kb3 Kb7 (64...Rb1 65.Kc2 Rb4 66.Be8+–) 65.Bd7 Rb1 66.Kc2 Rf1 (66...Rb6 67.Rb3 Kc7 68.Rb6 Kd7 69.Kd3+–) 67.Be6 Rf2 68.Kd3 f4 69.Bd5 Kb6 70.ef4 Rf4 71.Be4 Rf1 72.d5 Rg1 (72...Rd1 73.Ke2 Rd4 74.Rc6 Kb7 75.Kf3+–) 73.Kd4 Rg8 (73...Rd1 74.Ke5 Rf1 75.d6+–) 74.d6 Rd8 75.Kd5 Kb7 (75...Kb5 76.Bf5+–) 76.Ke6 (76.Kc5 Kc8 77.Bf5 Kb7 78.Rb3 Ka7 79.Ra3 Kb7 80.Be4 Kc8 81.Bc6 Rd6 82.Kd6 Kd8 83.Ra8) 76...Kb8 77.d7 Rh8 (77...Ka7 78.Rc8 Rd7 79.Kd7+–) 78.Bg6 (better is 78.Rb3 Ka7 79.Ra3 Kb6+–) 78...Rd8 79.Be8 Kb7 80.Ke7 1–0. mr5reasons1 (1690) – trango64 (1705), gameknot.com, 2013.

8.Be2 e5 9.Qc2 A) 9...a6 10.0–0 (10.bc6 bc6 11.0–0 Rb8 12.Rab1 Bd6=; 10.ba6 ba6 11.0–0 Rb8 12.d4 e4=; 10.cd5 cd5 11.0–0 Bd6 12.Rfc1 Qe7=) 10...ab5 11.cd5 cd5 12.Nb5 e4=; B) 9...dc4 10.bc6 bc6 11.Bc4 Rb8 12.0–0 Bd6=; C) 9...cb5 10.cb5 (10.cd5 b4 11.Nb5 Nd5 12.Ne5 Ne5=; 10.Nd5 bc4 11.Ne7 Qe7 12.Bc4 e4=) 10...e4 11.Nd4 Bd6 12.0–0 Be5=.

8.Be2 e5 9.bc6 bc6 10.d4 (10.0–0 dc4 11.Qc2 Ba6 12.Rab1 Rb8+=; 10.Rb1 dc4 11.Qc2 Ba6 12.Qf5 Bd6=; 10.cd5 cd5 11.0–0 Rb8 12.Rb1 Qa5=) 10...e4 11.Nd2 Rb8 12.Rb1 Qa5 =.

8.Be2 e5 9.d4 e4 10.Ne5 (10.Nd2 cb5 11.cd5 Nb6 12.Nde4 Ne4=) 10...Bd6 (10...cb5 11.cb5 Bd6 12.Nd7 Bd7+=) 11.bc6 (11.Nd7 Qd7 12.c5 Bb8=) 11...Ne5 12.de5 Be5 13.cd5 bc6 14.dc6 Rb8 15.Qd8 Rd8 16.c7 Bc7 17.Rb1? (better is 17.Nb5!?+=) 17...Ba5–+ 18.0–0 Rb2! 19.Rb2 Bc3 20.Rc2 (20.Rb8 Ba5–+) 20...Be5 21.Rfc1 Be6 22.a4 g6 23.h3 Kg7 24.f4 ef3! 25.Bf3 (25.Bf3 Rd3 Combination; 25.gf3 Bh3 Deflection) 25...Bf5 26.Rc7? (26.Rc5 Bg3 27.Ra5–+) 26...Bc7 (26...Bc7 27.Rc7 Rd7–+) 0–1. tsodikovich (1810) – fixxxer (2115), gameknot.com, 2015.

8.Be2 e5 9.cd5 cd5 (9...e4 10.Nd4 cd5 11.d3 Nc5 12.0–0 Bd6=) 10.Rc1 (10.0–0 a6 11.Rc1 ab5 12.Bb5 Bd6=; 10.Rb1 e4 11.Nd4 Nc5 12.0–0 Bd6=; 10.d4 e4 11.Nd2 Bd6 12.Rc1 Nb6=) 10...e4 11.Nd4 Nc5 12.0–0 Ne6 =.

7.Be2 dc4=+

8.Bc4 a6 9.a4 =+.

8.Bc4 a6 9.ba6 =+.

8.Bc4 a6 9.bc6 =+.

8.Bc4 cb5

9.Bb5 a6 10.Be2 b5 11.0–0 Nbd7 12.Nd4 Bb7 13.Bf3 Nd5 14.Nc3 N7b6 15.Nd5 Bd5 16.Nc6 Qe8 17.Ne7 Qe7 18.Bd5 Nd5 19.Rc1 Rac8 20.Qg4 ½–½. Kartanaite,Marija (1865) – Laine,Panu (2165), World Senior Teams, 2014.

9.Bb5 Qb6 10.a4 a6 11.Bf6?? (better is 11.Bd4 Qd8 12.Be2+=) 11...Bf6–+ (11...gf6?! 12.Be2=) 12.Ra3 ab5 13.ab5 Ra3 14.Na3 Be7 15.Nc2 Qb5 16.Ncd4 Qb2 17.0–0 Nc6 18.Qb3 Qb3 19.Nb3 Rd8 20.d4 b6 21.Rc1 Nb4 22.Rc4 Ba6 23.Rc1 h6 24.h3 Rc8 25.Rd1 Be2 26.Rb1 Bf3 27.gf3 Nc2 28.Rc1 Rc3 29.Na1 (29.Kh2 b5–+) 29...Nd4! 30.Rc3 (30.ed4 Rc1 Double attack (30...Rc1 Discovered attack; 30...Rd3 Decoy)) 30...Ne2 31.Kf1 Nc3 32.e4 f5 33.ef5 ef5 34.Nb3 b5 35.Nd4 g6 36.Ke1 Bf6 37.Nc6 Nd5 38.Kd2 Nf4 0–1. Valpa – Contaminator, playchess.de, 2002.

9.Bb5 Qb6 10.Qb3= Bd7 11.Nc3 (11.Be2 Qb3 12.ab3 Rc8=) 11...a6 (11...Nc6 12.0–0=) 12.Bc4 (12.Bd7 Qb3 13.ab3 Nbd7=) 12...Qb3 (12...Qd8 13.0–0=) 13.Bb3 (13.ab3 Bc6=) 13...Rd8 (13...Bc6 14.Rc1=+) 14.0–0 (14.Ne5 Be8=) 14...Bc6 (14...Nc6 15.Na4=) 15.d4 (15.Nd4 b5=) 15...Bf3 (15...b5 16.Ne5=+) 16.gf3 Nc6 17.Rac1 (17.Rfc1 Rac8=) 17...Rac8 18.a3 (18.Ne4 Nd5=+) 18...Na5 19.Ba2 Nc4 (19...b5 20.Ne4=+) 20.Bc4 Rc4 21.Ne4 Rdc8 (21...b5 22.Nc5=+) 22.Rfd1 (22.Nc5 Rc1 23.Rc1 Bc5 24.Rc5 Rc5 25.dc5 Nd7–/+) 22...Rc1 (22...b5 23.Nf6 Bf6 24.Kf1=+) 23.Rc1=+ Rc1 24.Bc1 Ne4 (24...Nd7 25.Kf1=+) 25.fe4= Kf8 (25...b5 26.Bb2=) 26.Kf1 (26.e5 f6=) ½–½. Schmitt,M – Erwee,Y, Duisburg, 1992.

9.Bb5 Nc6 10.Nc3 a6=+ 11.Be2 e5 12.0–0 e4 13.Ng5 Bf5 14.g4 Bg6–/+ 15.Nh3 Bd6 16.f4 ef3 17.Bf3=+ Bd3 18.Rf2 Ne5 19.Nf4–/+ Nf3 20.Qf3=+ Bc4 21.g5 Nd7 22.Ncd5 Ne5 23.Be5 Be5 24.d4 Bf4 25.Nf4 Qg5 26.Rg2 Qh6 27.Nh5= g6 28.Nf6 Kh8 29.Rc1 b5 30.Nd7 Rfe8 31.Re1 Rad8–/+ 32.Nf6 Re6 33.Ng4 Qg7 34.Ne5 Rf6 35.Qg3 Re6 36.Nf3 f5 37.Rf2 Rde8 38.Nd2 Ba2–+ 39.Rfe2 Bd5 40.e4 Bc4 41.Re3? Qa7 42.d5? Bd5! (43.Kg2 Qe7–+) 0–1. Dopper,Johan – van der Veken,Richard, corr, 1995.

9.Bb5 Bd7 10.Qb3 =+.

9.Bb5 Bd7 10.Bd7 Nbd7 11.0–0 Qb6 12.Bd4 (12.Bf6 Bf6 13.d4 Rfc8=) 12...Qd6 13.Nc3? (better is 13.Bf6 Bf6 14.d4=) 13...e5–+ 14.Nb5 Qc6 15.Ne5 (15.Na7 Qa6 16.Ne5 Ne5 (16...Ra7?! 17.Nd7 Nd7 18.Ba7 Qa7 19.d4=) 17.Be5 Ra7–+) 15...Qb5 16.Nd7 (16.Rb1 Qd5 17.Qf3 Ne5 18.Qd5 Nd5 19.Be5 b6–+) 16...Qd7 17.Rb1 b5 18.Qe2 a6 19.Rfd1 Rac8 20.g3 Rc2 21.Qe1 (21.a4 ba4 22.Qa6 a3–+) 21...Ne4 22.Bc3 (22.Qe2 Rfc8–+) 22...Ng5 23.Qe2 (23.Qf1 Rc8–+) 23...Qd5 24.Rb2 Nh3 (24...Nh3 25.Kf1 Qh1#) 0–1. Hasler,Ueli (1710) – Rosner,Dirk (2175), CiF, 2006.

9.Bb5 Bd7 10.Bd7 Nbd7 11.Bf6 Nf6 12.d4 –/+.

6.c4 Bd7

7.a4 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Ne4 11.0–0 Nd6 12.d3 Bf6 13.Nbd2 c6 14.bc6 bc6 15.c5 Nb5 16.d4 Bc8 17.Qa4 Qc7 18.Bb5 cb5 19.Qa3 Qc6 20.Nb3 Bd8 21.Ne5 Qa6 22.Qa6 Ba6 23.Bb2 f6 24.Nf3 Nc6 25.Ra1 Bb7 26.Bc3 b4 27.Bd2 Bc7 28.Ne1 Rb8 29.Nc2 Bc8 30.Ra4 Kf8?? 31.Nb4+/– Nb4 32.Rb4 Rb4 33.Bb4 Ke8 34.g3 Kd7 35.Na5 Ba5 36.Ba5 Kc6 37.f3 e5 38.de5 fe5 39.Bc3 Kc5 40.Be5 g6 41.Kf2 h5 42.h4 Bf5 43.Ke2 Kc6 44.Kd2 Kd7 45.Kc3 Ke6 46.Kd4 Bh3 47.e4 de4 48.fe4 Bg4 49.Bb8 Bh3 50.Ke3 Bg4 51.Kf4 Kf7 52.Kg5 Bc8 53.e5 ½–½. hal1958 – mrchess, HCL–A1377 playchess.de, 2003.

7.Qc2 a6 +=.

7.Nc3 a6=+ 8.a4 c6 9.Be2 (9.cd5 cd5 10.Be2 ab5 11.ab5 Ra1 12.Qa1 Bd6=) 9...dc4 10.ba6 Na6 11.Bc4 Qc7 (11...Qb6 12.Rb1=) 12.0–0 Ra7 (12...Rfd8 13.d4=) 13.Qc2 (13.d4 Rfa8=) 13...Nb4 (13...Rfa8 14.d4=) 14.Qb3 Nbd5 15.Nd5 (15.d3 Rfa8=) 15...ed5 16.Be2 Rfa8 17.Be5 Qc8 18.Rfc1 Ne4 19.Bd4 c5 20.Bb5 (20.d3 Nf6=+) 20...Bb5 (20...Bh3 21.Bf1=+) 21.ab5 (21.Qb5 Qf5 22.Bb2 Bh4=) 21...Ra1 22.Ba1 c4 23.Qb1 (better 23.Qc2=+) 23...Ra3 (23...Nc5 24.Rf1=+) 24.Qb2 (24.d3 Nc5 25.Qb2+= (worse 25.dc4 Nb3 26.Qb2 f6=+)) 24...f6=+ 25.Ne1 (25.Qc2!?=+) 25...Rb3 (25...Qa8!? 26.Qd4 b6 27.d3–+) 26.Qb3–/+. Lehr,Thomas – Weidmann,Joachim, Koblenz–ch, 1999.

7.Nc3 c6 8.a4 Ne4 9.Be2 Nc3 10.Bc3 dc4 11.Bc4 cb5 12.ab5 b6? (12...Qc7 13.Qb3+=) 13.0–0 (13.Qb1!? a5 14.ba6+/–) 13...Bc8+= 14.Ra2 Bb7 15.Qa1 a6? (better is 15...Bf6!? 16.Bf6 Qf6 17.Qf6 gf6+/–) 16.Bg7+– Re8 17.ba6 Bf3 18.gf3 f6 19.Bh6 Kf7 (19...Kh8 20.Kh1 b5 21.Rg1+–) 20.Kh1 (20.Qb1 Rg8 21.Kh1 Rg6+–) 20...Rg8 (20...Rh8 21.Qb1 Qc8 22.Qe4+–) 21.Rg1 (21.Qb1!? Rg6 22.Qe4 Qc8 23.Qa8 Qc4+–) 21...Nd7 22.Bf4 Ra7 (22...Rg1 23.Qg1 Qc8 24.Bb5+–) 23.Qc1 (23.Rg8 Qg8 24.Qb1 Ke8+–) 23...Nc5 (23...Rg1 24.Qg1 Qc8 25.d3+–) 24.d4 Qa8 25.Rg8 Qf3 (25...Kg8 26.Kg2 b5 27.Bb5 e5+–) 26.Rg2 1–0. Ptosek,Jan (1780) – Sumbera,Antonin (1660), Ostrava Konik op–B, 2007.

7.Be2 a6 8.a4 ab5 (8...Bd6 9.0–0=) 9.ab5 (9.cb5 c6=) 9...Ra1 10.Ba1 dc4 11.Bc4 Qe8 (11...c6 12.Nc3=) 12.Nc3 Bc8 (12...c6 13.Qb3=) 13.Qa4 (13.0–0 Nbd7=) 13...Nbd7 (13...Bd6 14.0–0=) 14.Qa2 (14.Qc2 Nb6 15.Bd3 Bd6=) 14...Nb6 (14...Bd6 15.0–0=) 15.Be2 Nfd5 (15...Bd6 16.d4=) 16.0–0 (16.Nd5 Nd5 17.0–0 Bd7=) 16...Nc3 (16...Nb4 17.Qb1=) 17.dc3+= Bd6 18.c4 (18.Qc2 f6+=) 18...Nd7 19.Bc3 (19.Qc2 f6+=) 19...e5= 20.Ra1 (20.Qb2 f6=) 20...Nc5 21.Qb2 (21.Qc2 Qe7=) 21...f6 22.Nd2 Qg6 23.Bf1 (23.Bb4 Bh3 24.g3 e4=) 23...Be6 24.g3 (24.Ra7 Rd8=) 24...Qf5 (24...Rd8 25.Ra7+=) 25.Qb1 (25.Bb4 Nd3 26.Bd3 Qd3=) 25...Qb1 26.Nb1 Rd8 (26...Nb3 27.Ra2+=) 27.Nd2 (27.Ra7 c6=) 27...Kf7 (27...Be7 28.h3=) 28.Nf3 (28.Ra7!?=) 28...Ne4 29.Be1 (29.Bb2 Bc5+=) 29...Bc5 30.Be2 Ke7 (30...Nd6 31.Ra4+=) 31.Ra4 g5–/+ 32.Kg2 h6 33.Ng1 Nd6 34.Nf3 Ne4 35.h3 Bf5 36.g4 Bg6 37.Ra2 Bf7 38.Ra4 Bg6 39.h4 Bf7 40.h5 Be6 41.Nh2 Nd2 42.Nf1= Nf1 43.Kf1 Ke8 44.Kg2 Ke7 (44...e4 45.Bc3=) ½–½. Schuchardt,Wolfgang (1690) – Otto,Martin (1820), Germany, 2006.

7.Be2 dc4 8.Bc4 c6 9.a4 =.

7.Be2 c6 8.a4 dc4 9.Bc4 cb5 10.ab5 a6 11.Nc3 a5 (11...Bd6 12.0–0=) 12.0–0+= Bc8 13.Qc2 b6 14.Ne5 Bb7 15.d4 Nbd7 (15...Qc7 16.Rfc1+=) 16.Ba3 (16.Nc6!? Bc6 17.bc6+=) 16...Ne5 17.de5 Ng4 18.Bd3 g6 19.Be4 Qc7?? (19...Be4 20.Qe4 Ba3 21.Ra3 Qg5=) 20.Be7?? (better is 20.Nd5! Qc2 21.Ne7 (worse is 21.Bc2 Ba3 22.Nb6 Bb4–/+) 21...Kg7 22.Bc2 Ne5 23.Bb2+–) 20...Qe7= 21.Bb7 Qb7 22.Qa4 Ne5 23.Qd4 Qc7 24.f4 Ng4 25.Ne4 (better is 25.Na4!? Rfd8 26.Qb6 Qb6 27.Nb6+=) 25...Rfd8–+ 26.Qb2 Qb7 (better is 26...Qc4!? 27.Nf6 Nf6 28.Qf6 Qb5–+) 27.Ra4–/+ f5 28.Nf6 Nf6 29.Qf6 Rd6 30.Rd4 Rd4 31.Qe6 Qf7 32.Qf7 Kf7 33.ed4 Rd8 34.Rd1 Rd5 35.Kf2 Rb5 36.Ke3 Rb3 37.Rd3? (37.Ke2–+) 37...Rd3 38.Kd3 Ke6 39.Kc4 Kd6 40.Kb5 (40.h3–+) 40...Kd5 41.Kb6 a4 0–1. Fournier,Frederic – Villa,Frederic, Ch Club, 1996.

7.Ne5 c6 (7...Be8 8.Nc3=) 8.a4 (8.Nc3 cb5 9.cb5 Be8=) 8...Qc7 (8...Be8 9.Nc3 Nbd7 10.Nd7 Bd7 11.cd5 ed5 12.Bd3=+) 9.Nd7 (9.f4!?=) 9...Nbd7=+ (worse 9...Nfd7 10.Nc3=) 10.d4 (10.Nc3!?=+) 10...Bb4 11.Bc3 Qa5 (better 11...Bc3!? 12.Nc3 dc4–/+) 12.Qb3=+ Bc3 13.Qc3 Qc3 (13...Qc7!? 14.Bd3 e5=+) 14.Nc3= Rac8 15.c5 Ra8 (15...b6 16.cb6 ab6 17.Kd2=) 16.Bd3+= Rfe8 17.0–0 Rab8 (17...e5!?+=) 18.a5+– Rec8 19.Rfb1 (19.Rfc1 Ra8+–) 19...Kf8 20.Ra2 Ke7 21.Rab2 Kd8 22.bc6 (22.g3!?+–) 22...bc6+= 23.Rb7 Rb7 24.Rb7 Rc7 25.Rb1 Rc8 26.f3 Rb8 27.Na2 Rb1 28.Bb1 g6 29.Nb4 Nb8 30.Nd3 Nbd7 31.Bc2 Kc7 32.a6 Kc8 33.Nb4 Nb8 34.Kf2 Ne8 35.Ba4 (35.e4 Nc7 36.Bd3 f6+=) 35...Kd7 36.Bd1 Nc7 37.Be2 Ne8 38.e4 de4 (38...f5 39.Ke3+=) 39.fe4 Nf6 40.Ke3 Ne8 41.Kf4 h6 42.h4 f6 43.Bf3 (better 43.Ke3!?+–) 43...Nc7= 44.Be2 Ne8 45.g4 g5 46.hg5 hg5 47.Ke3 Nc7 48.Bc4 Ke7 49.Kd3 Kd7 50.Kc3 Ke7 51.Kb3 (51.Bd3 Kd7+–) 51...Kd7 (51...f5 52.ef5 ef5 53.gf5+=) 52.Ka4 (52.Bf1 Kc8+–) 52...Ke7 53.Ka5 Kd7 (53...f5 54.ef5 ef5 55.gf5=) 54.Bb3 (54.Bf1 Ke7+=) 54...Ke7? (better 54...Nb5 55.d5 Nd4=) 55.Ba4+– 1–0. Tsigankov,Vladimir – Voloshin,Konstantin, 2009.

6.c4 Nbd7

7.a4 a6 8.ba6 ba6 9.Nc3 =+.

7.a4 Bb4 8.Be2 Qe7 (8...dc4 9.0–0=+) 9.0–0 Nb6 (9...dc4 10.Bc4 a6 11.ba6 ba6 12.d3=) 10.Na3 Bd7 (10...Ne4 11.Qc2=) 11.Qb3 (11.d4 dc4 12.Nc4 a6+=) 11...a5 (11...c5 12.d3=) 12.d3 dc4 (12...Rfd8 13.Ne5=) 13.Nc4+= Nc4 14.dc4 Ne4 15.Qc2 Nc5 16.Ne5 Rfd8 17.Rfd1 (17.Rad1 Be8+=) 17...Be8 18.Nd3 Nd3 19.Bd3 (19.Rd3 f6+=) 19...h6 (19...f5 20.Be2+=) 20.Bh7+/– Kf8 (20...Kh8 21.Be4 c6 22.Be5+=) 21.Be4 Rd1 (21...c6 22.Be5+/–) 22.Rd1 Rb8 23.Bf3 Kg8 24.Be5 f6 25.Bg3 b6 26.Qd3 e5+= 27.Bd5 Bf7 28.f4 Bd6 29.fe5 Be5 30.Bf7 Qf7 31.Be5 fe5 32.Rf1 Qe6 33.Qd5 Qd5 34.cd5 e4 35.Rc1+/– Rd8 36.Rc7 Rd5 37.Re7 Rd2 38.h4 h5 39.Kh2 Ra2 40.Re4 Kf7 41.Kg3 Kf6 42.Rf4 Ke5 43.Kf3 Ra1 44.g3 Rf1 45.Ke2 Rg1 46.Kf2 Ra1 47.Rd4 g6 48.Rf4 Ra2 49.Kf3 Ra3 50.Rc4 Kf5 51.Rf4 Ke5 52.Re4 Kf5 53.Rc4 Ra1 54.e4 Kf6? 55.Rc6+– Kf7 56.Rb6 Ra4 57.Ra6 Ra3 58.Kf4 a4 59.b6 Rb3 60.Ke5 Ke7 61.Kd5 Kd7 62.Ra7 Kc8 63.Kc6 Rc3 64.Kd6 Rg3+/– 65.Ra4 Kb7 66.e5 Rd3 67.Ke7 Re3 68.e6 Kb6 69.Rc4 Rf3 70.Kd8 Rd3 71.Ke8 Kb7? 72.e7 Rf3 73.Kd7 Rd3 74.Ke6 Re3 75.Kd6 (75...Re1 76.Rc5 Re7 77.Ke7+–) 1–0. Myrberg,Johnny – Hagelin,RG, corr SSKK, 1993.

7.a4 Nb6 8.Qc2 dc4 (8...Nc4 9.Bc4 dc4 10.Qc4=) 9.Na3 Nbd5 (9...a6 10.Nc4 Nbd5 11.Nce5=) 10.Nc4 (10.Bc4 a6=) 10...a6 11.ba6 (11.Nce5 ab5 12.Bb5 c6=) 11...Nb4 12.Qb3 Na6 13.Rc1 (13.d4!?=) 13...Nc5–/+ 14.Qc2 Bd7 Increasing the pressure on the isolated pawn on a4 (14...Na4 15.Bf6 Bf6–/+) 15.Nce5 (better 15.Bf6!? Bf6 16.Nce5=) 15...Ba4–/+ (15...Ra4?! 16.Nd7 Qd7 17.Bf6 gf6 18.d4=; 15...Na4?! 16.Ba1–/+) 16.Qb1 c6 (16...Nb3 17.Rc4 Bb5 18.Rh4 Bf1 19.Rf1–/+) 17.Be2 Ncd7 (17...Nb3 18.Rd1–/+) 18.Rc4 (better 18.Ng5!? g6 19.Ng6 fg6 20.Ne6=+) 18...Bb5 19.Rh4 h6 (19...Be2 20.Ke2 h6 21.Rc1–+) 20.g4? (20.Bb5!? cb5 21.Rd4=+) 20...Nh7 (20...Be2 21.Ke2 Ne5 22.Be5–+) 21.Nd7 (21.Bb5 Ne5 (21...Bh4?! 22.Nd7 cb5 23.Nf8 Nf8 24.0–0–/+; 21...cb5?! 22.Rh3–/+) 22.Be5 Bh4–+ (22...cb5?! 23.Rh5–/+)) 21...Qd7 (21...Be2 22.Nf8 Bd3 23.Qd1 Bh4 24.Nh7 Kh7 25.Nh4 Qh4 26.h3–+) 22.g5 (22.Bb5 Qd5 23.e4 Qb5–+) 22...Ng5 (22...Be2!? 23.Ke2 Ng5 24.Rg1–+) 23.Ng5 Bg5 24.Rd4 Qe7 25.Rg1 (25.Bb5!? cb5 26.Rg1–+) 25...Be2 26.Ke2 c5 (26...Ra7 27.f4 Bf6 28.Rd7+–) 27.Rdg4 b5?? (better 27...f5!? 28.R4g2 e5–+) 28.Bg7 (28.f4 f5 29.R4g3 Bf6 30.Bf6 Qf6 31.Rg7 Qg7 32.Rg7 Kg7 33.Qb5 Rac8=) 28...Kg7–/+ 29.h4 f5 30.R4g2 Rg8 (30...b4!?=+) 31.hg5= Kf7 (31...hg5 32.Rg5 Kf7 33.Rf5 ef5 34.Qf5 Qf6 35.Qh7 Rg7 36.Rg7 Qg7 37.Qf5 Qf6 38.Qd5 Qe6 39.Qa8 Kg6+–) 32.gh6+– Rg2 33.Rg2 Rg8 34.h7 Rh8 35.Qh1 Qf6?? (better 35...Qf8+–) 36.Qh5 (36.Rg8 Rg8 37.Qb7 Qe7 38.hg8Q Kg8 39.Qe7 Kh8+–) 36...Ke7 (36...Kf8 37.Rg6 Qf7 38.Qg5 Rh7 39.Qd8 Qe8 40.Rg8 Kg8 41.Qe8 Kg7 42.Qe7 Kg8 43.Qe6 Rf7 44.Qc8 Kg7 45.Qc5+–) 37.Rg6 (better 37.Rg8 Kd6 38.Rh8 Qh8+–) 37...b4 (37...Qf7 38.Qg5 Kd7+–) 38.Rf6 Kf6 39.Qh6 Kf7 40.Kd1 (40.Kf3 e5+–) 40...b3 41.Kc1 (41.d3!? e5+–) 41...c4 42.f4 (42.f4 b2 43.Kb1+–) 1–0. Stolzenwald,Karl_Heinz – Steppuhn,Simone, B Open Tournament – VMCG Festival, 2015.

7.a4 dc4 8.Bc4= Nb6 9.Be2 a6 10.Nc3 Nfd5 (10...ab5 11.ab5 Ra1 12.Qa1=) 11.Nd5 (11.ba6 ba6 12.0–0 Nc3 13.Bc3 Nd5+=) 11...Qd5 (11...ed5 12.ba6 ba6 13.Qc2+=) 12.0–0 (12.Qc2!? ab5 13.Qc7+=) 12...ab5= 13.ab5 Ra2 (better 13...Bd7!?=+) 14.Ra2 Qa2 15.Qa1 (15.Qc2 Ba3 16.Rb1 Bb2 17.Rb2 Qa3+–) 15...Qa1+= 16.Ra1 Bd7 17.Ra7 (better 17.Ne5+=) 17...Bb5?? (better 17...Ra8 18.Ra8 Na8=) 18.Bb5+– Rb8 19.Bd4 Nd5 20.Bc4 c5 (20...Bd6 21.Ne5+–) 21.Be5 Rc8 22.Rb7 (22.Rb7 Bf6 23.Bd6+–) 1–0. GuestJCLC – GuestQLTT, freechess.org, 2017.

7.a4 c5 8.d4 b6 9.Nbd2 (9.cd5 Nd5 10.Bc4 Bb7=) 9...Bb7 (9...a6 10.cd5 Nd5 11.Rc1=) 10.Be2 Rc8 (10...cd4 11.Bd4 Bd6 12.0–0=) 11.0–0 Ne4 (11...cd4 12.Bd4 Bd6 13.a5=) 12.Ne4 de4 13.Nd2 (13.Ne5 Ne5 14.de5 Qc7=) 13...Nf6 (13...cd4 14.ed4 Qc7 15.a5=) 14.Nb3 (14.dc5 Bc5 15.Qc2 Bd6=) 14...cd4 15.Nd4 (15.ed4 Qc7=) 15...Nd7 (15...Qc7 16.a5=) 16.Nb3 (16.a5 Qc7=) 16...Nc5 (16...Qc7 17.a5=) 17.Nc5 Bc5 18.Qc2 (18.Qd8 Rfd8 19.Bc3 f6+=) 18...Qg5 (18...Qc7 19.a5=) 19.a5 h5 (19...Rfd8 20.ab6 ab6 21.Ra7=) 20.ab6+= Bb6 (20...ab6 21.Ra7 Rc7+=) 21.Rad1 (21.Qc3!?+–) 21...Qb5= c4 gets attention 22.Qc3 (22.Ba3 Rfd8=) 22...Qg5 23.Ba3 (23.Bh5 Ba5 24.Qd4 Bb4=) 23...Bc5 (23...Rfd8 24.Rd8 Rd8 25.Qb4=+) 24.Bb2 (24.Qa5 Qe7 25.Ra1 a6=) 24...Be7 (better 24...h4–/+) 25.Rd7+= Bf6 26.Qc2 (26.Qb4 Bc6 27.Bf6 Qf6 28.Ra7 h4+=) 26...Rb8 (26...Bc6 27.Ra7 h4 28.Bf6 Qf6 29.Rfa1=) 27.Bf6 gf6 (27...Qf6 28.Bh5 a6 29.Rb1+=) 28.Rfd1 (28.Rb1 Bc6 29.Ra7 h4+–) 28...f5 (28...a5 29.R1d6=) 29.Qa4 (29.Rb1 Bc6 30.Rb8 Bd7+–) 29...f4 (better 29...a6!?+=) 30.ef4+– Qf4 31.Qa7 (31.Bh5?! e3 32.Rf1 Qg5=) 31...e3?? (better 31...Bc8 32.Rd8 Rd8 33.Rd8 Kg7+–) 32.f3 (better 32.fe3 Qh6 33.Rb7 Rb7 34.Qb7 Qe3 35.Kf1 Qf4 36.Qf3 Qh2 37.Qf6+–) 32…Bc8 (32...Bc8 33.R7d4 Rb7+–). DEFFM – GuestPLVX, freechess.org, 2016.

7.a4 c5 8.Be2 b6 9.0–0 a5 10.ba6 Ba6 (10...dc4 11.Na3=) 11.Na3 dc4 (11...Bb7 12.d3=) 12.Nb5 Bb7 13.Bc4 Bc6 (13...Qb8 14.h3=) 14.Qe2 Qb8 15.d3 Ng4 (15...Rd8 16.e4=) 16.e4 Nde5 (16...Bf6 17.d4=) 17.Ne5 Ne5 18.f4 (18.Bb3 Rd8 19.Rad1 Ng6=) 18...Nc4 19.dc4 Rd8 20.Qg4 Bf8 21.Be5 (21.Bf6 Rd2 22.Rad1 Rd1 23.Rd1 Be4=+ (< 23...Ra4 24.Rd8 Qd8 25.Bd8 Rc4 26.Na7 Be4 27.Bb6+=)) 21...Qb7 22.f5 ef5 23.ef5 Rd2 24.Rf2 Rf2 (24...Qd7 25.Rd2 Qd2 26.Bg7 Bg7 27.f6 Qg2 28.Qg2 Bg2 29.fg7–/+) 25.Kf2= f6 26.Bf6 Qf7 (26...Re8 27.Bc3=+) 27.Bc3 (27.Be5 Bd7=) 27...Bd7 28.Kg1 (28.Qf3 Rd8 29.f6 Qc4=) 28...Qf5 29.Qf5 Bf5 30.Nc7 Ra7 31.Nd5 Ra6 32.Nc7 Ra7 33.Nd5 ½–½. Kreuzer – Funk, tt Verb–Liga, 1984.

7.Qc2 a6 8.ba6 b6 9.Nd4 Ba6 10.Nc6 =+.

7.Qc2 a6 8.ba6 b6 9.cd5 ed5 10.Nc3 =+.

7.Qc2 dc4 8.Na3 A) 8...a6 A1) 9.ba6 Ra6 (9...c3 10.Qc3 Nc5 11.Bc4 b6 12.0–0 Ba6 13.Ba6 Ra6; 9...Nc5 10.Nc4 Na6 11.a3 Nc5 12.Ng5 g6 13.Ne5 Na4; 9...b6 10.Bc4 Ba6 11.Nb5 Nc5 12.Ne5 Nd5 13.Bd4 f6) 10.Nc4 Nd5 11.Nce5 Rb6 12.Nc4 Nb4 13.Qb1 Ra6; A2) 9.Bc4 Nb6 10.ba6 Nc4 11.Nc4 Ra6 12.0–0 Nd5 13.Qb3 f6; B) 8...g6 B1) 9.Nc4 a6 (9...Nd5 10.e4 N5f6 11.Be2 a6 12.ba6 Nc5 13.0–0 Na6) 10.ba6 Ra6 11.Be2 Nc5 12.Nce5 Ra8 13.Bd4 Na4; B2) 9.Be2 Nd5 (9...c3 10.dc3 Nc5 11.Rd1 Bd7 12.Ne5 Bd6 13.Nd7 Qd7; 9...a6 10.ba6 Nc5 11.Nc4 Na6 12.0–0 Bd7 13.Bf6 Bf6) 10.0–0 a6 11.ba6 Ra6 12.Nc4 Bf6 13.Bf6 Qf6; B3) 9.Bc4 Bb4 (9...Nb6 10.0–0 Nc4 11.Nc4 a6 12.a4 Bd7 13.Qb3 Ne4; 9...Nd5 10.0–0 N7f6 11.e4 Nb4 12.Qb3 c5 13.bc6 Nc6; 9...a6 10.0–0 ab5 11.Nb5 c6 12.Nc3 Nb6 13.Be2 Nbd5; 9...Nc5 10.0–0 a6 11.Ne5 ab5 12.Nb5 Na4 13.Rab1 c6; 9...c5 10.bc6 bc6 11.Be2 Rb8 12.0–0 Nd5 13.Nc4 Qc7; 9...b6 10.0–0 Bb7 11.Nd4 Nc5 12.Nc6 Bc6 13.bc6 Nce4) 10.Be2 Qe7 11.Nc4 a6 12.a3 Bc5 13.ba6 Ra6; C) 8...Nc5 9.Bc4 (9.Nc4 Nd5 10.a3 a6 11.ba6 Ra6 12.Nce5 Ra5 13.Bd4 f6) 9...Nd5 10.0–0 f5 11.Rab1 Bd6 12.Bd4 Nd7 13.Rb3 Qe7; D) 8...Nd5 D1) 9.Nc4 a6 (9...Nc5 10.a3 a6 11.ba6 Ra6 12.Nce5 Ra5 13.d4 Na4) 10.e4 N5f6 11.ba6 Ra6 12.e5 Nd5 13.Bd3 Nb4; D2) 9.Bc4 f5 (9...N7b6 10.0–0 Nb4 11.Qb3 Nc4 12.Nc4 a6 13.ba6 Na6; 9...Nc5 10.0–0 a5 11.Bd4 f6 12.Be2 Nb4 13.Qc4 b6; 9...f6 10.0–0 Nc5 11.Bd4 a5 12.Be2 Nb4 13.Qc4 b6; 9...Nb4 10.Qc3 Nf6 11.0–0 Bd7 12.Nc2 a5 13.a3 Nbd5; 9...N7f6 10.0–0 Nb4 11.Qb1 Nbd5 12.e4 Nf4 13.Qc2 Bd7; 9...Bf6 10.0–0 Qe7 11.e4 Bb2 12.Qb2 N5f6 13.e5 Ne4; 9...a5 10.ba6 Nc5 11.ab7 Bb7 12.0–0 Nb6 13.Rfd1 Nc4; 9...a6 10.0–0 Ba3 11.Ba3 ab5 12.Bf8 bc4 13.e4 Nf8) 10.0–0 Nc5 11.Ne5 Nb4 12.Qd1 Nd5 13.f4 Ne4; E) 8...c3 9.dc3 a6 10.ba6 b6 11.Nd4 Ba6 12.Ba6 Ra6 13.Nc6 Qe8.

7.Qc2 dc4 8.Bc4= a6 9.ba6 (9.Na3 Nb6 10.ba6 Nc4 11.Nc4 Ra6 12.0–0 Bd7 13.a4 Nd5; 9.Nc3 Nb6 10.Bd3 ab5 11.Bb5 Nbd5 12.0–0 Nb4 13.Qb1 Bd7) 9...b6 (9...Nb6 10.Bd3 Nbd5 11.Bf6 Nf6 12.Nc3 b6 13.Ne5 Ba6; 9...Nc5 10.Nc3 b6 11.0–0 Ba6 12.Ba6 Na6 13.a3 Nd5) 10.Nd4= (10.Nc3 Ba6 11.Ba6 Ra6 12.0–0 Ra5 13.Nd4 Qa8) 10...Ba6 11.Ba6 Ra6 12.Nc6 Qe8 13.Ne7 Qe7.

7.Qc2 dc4 8.Bc4= b6 9.Ng5 (9.Nd4 Nb8= (9...Ne5 10.Bb3 a6 11.f4 Ng6 12.Nc6 Qd7 13.Ne7 Ne7) 10.0–0 Bb7 11.Be2 Nbd7 12.Nc6 Bc6 13.bc6 Nc5; 9.0–0 a6 (9...Bb7 10.Nc3 a6 11.ba6 Ba6 12.Ba6 Ra6 13.a4 c6) 10.Nc3 ab5 11.Nb5 Bb7 12.a4 Bf3 13.gf3 c6; 9.Na3 a6 (9...h6 10.0–0 a6 11.Be2 Bb7 12.ba6 Ba6 13.Ba6 Ra6; 9...Bb4 10.0–0 Bb7 11.Be2 Nc5 12.d4 Ncd7 13.Rfc1 Qe7; 9...Bb7 10.0–0 h6 11.Be2 a6 12.ba6 Ba6 13.Ba6 Ra6; 9...Bc5 10.Bd3 a6 11.0–0 ab5 12.Nb5 Bb7 13.Ng5 g6; 9...Re8 10.0–0 Bb7 11.Nd4 Nc5 12.Nc6 Bc6 13.bc6 Nce4) 10.0–0 h6 11.Be2 Bb7 12.ba6 Ba6 13.Ba6 Ra6; 9.Nc3 a6 (9...Bb7 10.0–0 a6 11.ba6 Ba6 12.Ba6 Ra6 13.a4 c6) 10.0–0 ab5 11.Nb5 Bb7 12.a4 Be4 13.d3 Bf3; 9.h3 a6 (9...Bb7 10.Nc3 a6 11.ba6 Ba6 12.Ba6 Ra6 13.0–0 Ra5) 10.Nc3 ab5 11.Nb5 Bb7 12.0–0 Be4 13.d3 Bf3) 9...h6 (9...Bb7 10.0–0= h6 11.Nf3 a6 12.ba6 Ba6 13.Ba6 Ra6) 10.h4 (better 10.Nf7 Kf7 11.Be6 Ke6 12.Qc4 Nd5 13.Qc6 Bd6 14.Qa8=+; 10.Ne4 a6 11.Nbc3 Bb7 12.0–0 ab5 13.Bb5 Ne4) 10...e5?? (10...a6 11.Be6 Nc5 (11...hg5 12.Bd7 Bd7 13.hg5 g6) 12.Bc8 Rc8 (12...Nd3 13.Ke2 Nb4) 13.Bf6= (13.d4 Ncd7) 13...Qd3; 10...Bb7 11.Nf3 a6 12.ba6 Ba6 13.Ba6 Ra6) 11.d4?? (better 11.Bf7 Rf7 12.Ne6+–) 11...Bd6 (11...ed4 12.Bd4 Bb7 13.Nd2=) 12.Nd2 (12.Ne4 Bb4 13.Nbd2 a6=) 12...Bb7 (12...a6 13.Nge4=+) 13.Rc1 (13.Ngf3 ed4 14.Nd4 Ne5= (14...Bg2? 15.Rg1+–)) 13...Qe7 (13...a6 14.de5 Ne5 15.Be5 Be5 16.Ngf3 ab5 17.Bf7 Rf7 18.Ne5=+) 14.Nge4 (14.de5 Ne5 15.Be5 Qe5=+) 14...Ne4=+ 15.Ne4 Bb4 16.Ke2 (16.Nd2 Rfd8=+ (worse 16...Bg2 17.Rg1 Bb7 18.Qg6+=)) 16...ed4 17.Ng3 Bc5 (17...a6 18.Nf5 Qe4 19.Qe4 Be4 20.Nd4 ab5 21.Nb5=+) 18.Nf5= Qe4 (better 18...Qf6=) 19.Bd3?? (19.Qe4 Be4 20.Nd4+= (worse 20.ed4 Bf5 21.dc5 Nc5=+)) 19...Qg2 (better 19...Qg4 20.Ke1 Bb4 21.Qd2 Bd2 22.Kd2 Nc5 23.Nd4 Qg2–+) 20.e4?! (20.Nd4 Bd4 21.Bh7 Kh8 22.Bd4 Qf3 23.Kd2 Qf2 24.Kc3 Qc2 A) 25.Kc2?? Kh7 (worse 25...Bh1 26.Bf5–+) 26.Rhd1 Rfd8–+; B) 25.Bc2 Bh1 26.Rh1–+) 20...Ne5 21.Bd4 (21.Nd4 Nd3 22.Qd3–+) 21...Qf3 22.Kd2 Bb4 (22...Qd3?! 23.Qd3 Nd3 24.Kd3=+) 23.Bc3 Qf2 (23...Qd3?! 24.Qd3 Rfd8 25.Qd4 Rd4 26.Nd4=+) 24.Kd1 Qc2 (24...Nd3 25.Qd3 Be4 26.Nh6 gh6–+) 25.Kc2 (25.Bc2?? Rad8 26.Ke2 Bc3–+) 25...Nd3 26.Kd3 Rad8 27.Ke3 (27.Kc4 Bc3 28.Kc3 Be4 29.Ne7 Kh7–+) 27...Bc5 (better 27...Rfe8 28.Ng3 Bc5 29.Kf4 Rd3–+) 28.Kf4 f6 29.Rh3 (29.Rhd1 a6 30.ba6 Ba6–+) 29...Rfe8 30.Re1 Bd6 (30...a6 31.a4–+) 31.Nd6 Rd6 32.Rhe3 (32.h5 c6–+) 32...Rde6 (32...a6 33.ba6 g5 34.Kf3 Ba6 35.e5 Bb7 36.Kf2 fe5 37.Be5 Rd2 38.R1e2 Re2 39.Ke2–+) 33.e5 (33.h5 c6 34.bc6 Rc6–+) 33...fe5 (33...g5 34.Kg4–+) 34.Re5 Rf8 (better 34...Rf6 35.Ke3 Rd8–+) 35.Kg4?? (35.Ke3 Re5 36.Be5 Rf5 37.Bc7 Rb5–+) 35...Bf3 (better 35...Rg6 36.Rg5 Bf3 37.Kh3 hg5 38.hg5 Rg5–+) 36.Kg3 (36.Kh3 Re5 37.Be5–+) 36...Rg6 37.Kh3?? (37.Kf2–+) 37…Bg4 (37...Bg4 38.Kh2 Rf2 39.Kg3 Rf3 40.Kg2 Rc3–+) 0–1. Ho Hou Meng – Gautam,Ashees (1955), 37th Olympiad, Turin ITA, 2006.

7.Qc2 dc4 8.Bc4= Nb6 A) 9.Bd3 Nbd5 (9...g6 10.Nc3 Nbd5 11.Nd5 Nd5 12.0–0 Bd7 13.e4 Nf4; 9...Bd6 10.Nc3 h6 11.0–0 Qe7 12.Nd4 e5 13.Nf5 Bf5; 9...a6 10.ba6 Nbd5 11.Bf6 Nf6 12.ab7 Bb7 13.Nc3 Ra5; 9...Bd7 10.Nc3 g6 11.0–0 Bd6 12.h3 c6 13.Rac1 Rc8; 9...h6 10.Nc3 Qd6 11.0–0 Bd7 12.a4 Nbd5 13.Nd5 Nd5; 9...Qd5 10.Bd4 Qh5 11.Nc3 Bd6 12.Bf6 gf6 13.Ne4 Nd5) 10.a3 a6 11.Be5 Ng4 12.ba6 b6 13.Nc3 Ba6; B) 9.Be2 Nbd5 (9...a6 10.ba6 Nbd5 11.Nc3 Nb4 12.Qb3 b6 13.Ba3 Na6; 9...Nfd5 10.Nc3 Nb4 11.Qb1 f5 12.0–0 Qd6 13.e4 Rd8; 9...h6 10.Nc3 Qd6 11.0–0 Bd7 12.a4 Nbd5 13.Nd5 Nd5) 10.Nc3 Nb4 11.Qb1 Nfd5 12.0–0 Bf6 13.Nd5 Nd5.

7.Qc2 c5 8.Be2 (8.bc6 bc6 9.cd5 cd5=+) 8...b6 (8...dc4 9.0–0=+) 9.0–0= Bb7 (9...dc4 10.Bc4 Bb7 11.d3=) 10.d4 (10.cd5 Bd5 11.Nc3 Bb7=) 10...Rc8 (10...dc4 11.Qc4 a6 12.dc5 ab5 13.Qf4=+ (worse 13.Qb5 Ba6 14.Qa6 Ra6 15.Ba6 Nc5–/+)) 11.Nbd2 Ne4 (11...cd4 12.Bd4 Nc5 13.Ng5=) 12.Ne4 (12.Rfd1 Nd2 13.Rd2 dc4 14.dc5 Rc5+=) 12...de4 13.Nd2 (13.Ne5 cd4 14.Bd4 Ne5 15.Be5 Bc5+=) 13...f5 (13...cd4 14.Bd4 e5 15.Bc3=) 14.Rad1 (14.Rfd1 cd4 15.Bd4 e5=) 14...Qe8 (14...cd4 15.Bd4 e5 16.Bc3=) 15.f3 (15.Nb3 cd4 16.Nd4 e5=) 15...Nf6 (15...cd4 16.Bd4 e5 17.Bb2=) 16.fe4+= Ne4 (16...cd4 17.ef5 de3 18.Nb3=) 17.Bf3 (17.Ne4 Be4 18.Bd3 cd4 19.ed4 Qg6 20.Be4 fe4+=) 17...Qg6 18.Be4 fe4 19.Rf8 (19.Qa4 Bg5 20.Qb3 cd4 21.Bd4 Be7=) 19...Rf8 20.Nf1 Qf7 (20...Bd6 21.Ba3=) 21.Qe2 h5 (21...Bd6!?=) 22.Ng3+– h4 23.Rf1 Qg6 24.Rf8 Bf8 25.Nh5 Bc8 (25...e5 26.dc5 Bc5 27.Be5 Be3 28.Qe3 Qh5 29.Bb2=) 26.Nf4+– Qf5 27.Qh5 (27.Qd2 Bd6+=) 27...Qh5= 28.Nh5 Kf7 (28...e5 29.d5 Bg4 30.Ng7 Bg7 31.Kf2–/+) 29.Nf4= g5 30.Nh3 Kg6 (30...cd4 31.Bd4 Be7 32.Nf2=) 31.Nf2 (31.Kf2 Bd6 32.Ba3 g4 33.dc5 bc5 34.Nf4 Kf5=) 31...Kf5 32.h3 (32.g4!? hg3 33.hg3=) 32...cd4=+ 33.ed4 e3 34.Ng4 Ke4 35.Kf1 Kd3 36.Ne5 Kc2 (36...Kd2 37.Nf3 Kd1 38.a3–/+) 37.Ba1 Kd1 (better 37...Kd2 38.Nf3 Kd1–/+) 38.Nf3? (38.Bc3!?=+) 38...Bb4 (better 38...e2 39.Kf2 Bb4–+) 39.c5? (better 39.Ng1–/+) 39...e2–+ 40.Kf2 e1Q (better 40...bc5 41.a4 c4–+) 41.Ne1–/+ Be1 42.Kf3 Kc2 (better 42...bc5 43.dc5 Bg3–/+) 43.d5?? (better 43.c6–/+) 43...ed5 (43...bc5 44.d6–+) 44.cb6?! (44.c6–+) 44...ab6 45.Bd4 Bd7 46.Bb6 (46.a4 Ba5–+) 46...Bb5 47.Be3 Bd2 (47...Kb2 48.Bg5 Ka2 49.Bf4–+) 48.Bd2 Kd2 49.Kg4 Ke3 (49...Bd7!? 50.Kg5 Bh3 51.gh3–+) 50.Kg5 d4 51.Kh4 d3 (51...d3 52.g4 d2–+) 0–1. Heyer,Thomas – Hillgaertner,Walter, Giessen op, 1995.

7.Qc2 Ne4 8.Nc3 Ndc5 9.d3 Nc3 10.Qc3 =.

7.Nc3 a6 8.ba6 b6 9.Nd4 =.

7.Nc3 Nb6 8.Qb3 Bd7 9.a4 c6 10.d4 Rc8 (better is 10...dc4!? 11.Bc4 Nc4 12.Qc4 Rc8=+) 11.c5+= Na8 12.a5 b6 13.ab6 (better is 13.cb6!? ab6 14.bc6 Bc6 15.a6+/–) ½–½. Sieradzka,A – Hadrys,M, Poland–ch U14 Girls, 1998.

7.Nc3 c5 8.d4 dc4 (8...Nb6 9.cd5 ed5 10.dc5 Bc5 11.Na4 Na4 12.Qa4+=) 9.Bc4= cd4 10.Nd4 (10.Qd4 Qc7 11.0–0 Rd8=) 10...Nc5 (10...Qc7 11.Be2 Nc5 12.0–0+=) 11.0–0= e5 12.Nb3 Bg4 13.Qd8 Rfd8 14.Nc5 Bc5 15.Rac1 Rac8 16.Nb1 (16.h3 Bb4 17.Bb3 Bd7=) 16...Re8 (16...Nd5!?+=) 17.Nd2= Bb6 (17...Rc7 18.h3 Bb4 19.Nf3 Bf3 20.gf3+=) 18.h3+= Bf5 (18...Red8 19.Nb3 Rc4 20.Rc4+=) 19.Nf3 Bc7 20.Rfd1 h6 21.a4 Be4 (21...Bb8 22.Nh4 Bh7 23.g4+=) 22.Nd2 (22.Bb3!?+/–) 22...Bf5 23.Nf3 Be4 ½–½. Backlin,Stefan – Borvander,Tom (2175), Swedish Championship Elitserien, 2004.

7.Nc3 c5 8.cd5 ed5 9.Be2 Nb6 10.d3 Qc7 11.a4 Be6 12.a5 Nbd7 13.0–0 Ne5 14.Ne5 Qe5 15.d4 cd4 16.ed4 Qf4 17.Qd3 Rac8 18.g3 Qh6 19.h4 (19.Rfe1 Rfe8=) 19...Rc7 (19...Bb4!?=+) 20.b6+= ab6 21.ab6 Rc6 22.Qb5 (22.Ra7 Rb6 23.Na4 Rc6 24.Rb7 Bd6=) 22...Rfc8 (22...Bd8 23.Ba3 Re8 24.Bc5 Bb6 25.Bb6 Rc3 26.Ba5=) 23.Ra7 Qg6 24.Rb7 Bd6 25.Qd3 (25.Bd3 Qg4 26.Be2 Qh3–+) 25...Qd3=+ 26.Bd3 Rc3 27.Bc3 Rc3 28.Be2 Rb3 29.Rc1 Ne4 30.Rc6 g6 31.Bf1 Bf5 32.Ra7 (32.Bg2 Bf8 33.Rbc7 Be6=+) 32...Kg7 33.Bg2 Bb8 34.Re7 Rb1 35.Kh2 Nf2 36.Bd5 Ng4 37.Kg2 Rb2 38.Kg1 Kh6 39.Rf7 (better 39.Rc3!? Rb6 40.Rf7–+) 39...Rb1–+ (39...Bg3?! 40.Rf5 Ne3 41.Be4–+) 40.Kg2 Ne3 41.Kf2 Nd5 42.Rf5 Rb2 (42...Rb6 43.Rb6 Nb6 44.Rf7+=; 42...Nb6?! 43.h5=) 43.Kf3 Rb3 44.Ke4 Ne7 45.Rff6 Nc6 46.Rc6 Bg3 47.Kd5 Bh4 48.Kc4 (48.Rd6 Bg3 49.Re6 Kg5–+) 48...Rb1 49.Kc5 (49.Rd6–+) 49...Be7 50.Kc4 Bd8 51.Kc5 (51.d5 Rb6 52.Rc8 Be7–+) 51...Kg7 52.d5 (52.b7 Rb7 53.Re6 g5–+) 52...g5 53.d6 g4 54.Rc7 (54.Kd5 Rb6 55.Rc7 Kg6 56.Rc8–+) 54...Bc7 55.bc7 (55.dc7 g3 56.Kd6 Rb6 57.Kd5 g2–+) 55...g3 56.Kd5 g2 57.c8Q g1Q 58.Qc3 Kf7 59.Qf3 (59.Qc7 Kg6 60.Qc2 Kh6–+) 59...Kg8 60.Qe4 (60.Qe2 Qd1 61.Qd1 Rd1 62.Ke5–+) 60…Rb5 (60...Rb5 61.Kc4 Qc5 62.Kd3 Qa3 63.Kd4 Rb4 64.Ke5 Qg3 65.Kd5 Qg5 66.Qe5 Rb5 67.Kc4 Qe5 68.Kd3 Rb3 69.Kc4 Rc3 70.Kb4 Qc5 71.Ka4 Ra3) 0–1. DEFFM – GuestHLFW, freechess.org, 2019.

7.Nc3 c5 8.Be2 Nb6+=.

7.Nc3 Nc5 8.d3 dc4 (8...a6 9.Be2=) 9.dc4= Nfe4 (9...Bd6 10.Be2=) 10.Qc2 Nc3 11.Bc3 c6 (11...Bd6 12.Be2=) 12.a4 (12.Be2 Bd7=) 12...Bf6 (12...Bd6 13.Rd1=) 13.Nd4 0–1. GuestRJHC – GuestPJKQ, freechess.org, 2016.

7.Nc3 Nc5 8.d4 Nce4 9.c5 (9.Bd3 a6=) 9...c6 (9...a6 10.Ne5=+) 10.a4 (10.bc6 bc6 11.Ne5 Qc7=) 10...Bd7 (10...Qa5 11.Bd3=+) 11.Bd3 (11.Ne5 Qa5=) 11...a6 (11...b6 12.Ne5 Nc3 13.Bc3 cb5 14.ab5 bc5 15.dc5 Bc5 16.0–0=) 12.bc6 (12.b6 Be8+=) 12...Bc6 13.0–0 Rc8 (13...Qc7 14.Ne5=) 14.a5 (14.Ne5 Qc7+=) 14...Nc3 (14...Ng4 15.Qb3+=) 15.Bc3 Ne4 (15...Qc7 16.Rb1+=) 16.Bb2 (16.Qb3 Bf6+=) 16...Bb5 (16...Qe8 17.Nd2+=) 17.Bb5+/– ab5 18.Nd2 (18.Qd3 Qd7+/–) 18...Ra8 (18...f5 19.f3 Nf6 20.Qb3+/–) 19.Ne4+/– de4 20.Bc3 Bf6 (20...Qd5!?+=) 21.Qb1 (21.Qb3 Qd5 22.Rfb1 Ra7+/–) 21...Re8 (21...Qd5 22.Qb5 e5 23.de5 Be5 24.Rfd1+–) 22.Qb5 Qc7 23.Rfb1 Reb8 24.Qb6 Qb6 25.Rb6 Kf8 26.Rab1 Bd8 27.R6b5 f5?! 28.c6 Bc7 29.Rb7 Rb7 30.Rb7 Ba5 31.Ba5 Ra5 32.Kf1 Ra1 33.Ke2 Rc1 34.c7 Ke8 35.Kd2 Rc6 36.c8Q! Rc8 37.Rg7 Kf8 38.Rh7 Ra8 39.Rh8 (39...Kf7 40.Ra8+–) 1–0. algernon (2290) – hsingletary (2110), net–chess.com, 2005.

7.Nc3 Re8 8.d4 dc4 (8...a6 9.c5=) 9.Bc4 Bd6 10.0–0+= e5 (10...a6 11.ba6 ba6 12.Rb1+=) 11.Qb3 (11.Ng5 Rf8+=) 11...Qe7 12.de5 (12.Ng5 Rf8+=) 12...Ne5 13.Ne5 Be5 14.Nd5 (14.Ba3 Bd6 15.Bd6 cd6+=) 14...Nd5= 15.Bd5 Bb2 (15...c6 16.Be5 cd5 17.Bd4+=) 16.Qb2+= Rd8 (16...a6 17.a4+=) 17.Rad1 Rb8 (17...a6 18.ba6 Ra6 19.Bb7 Bb7 20.Qb7 Ra2 21.Rc1+=) 18.Rd4 (18.Qc2 Bg4 19.Rd4 a6+/–) 18...Bd7 (18...Be6 19.Be4+=) 19.Rfd1 c5 (19...c6 20.Bf3 c5+= (20...cb5? 21.Qd2+–)) 20.Rf4 (20.R4d3!?+=) 20...Be6= 21.e4? (better is 21.Bf3!?=) 21...Bd5–/+ 22.ed5 Rd5!? (23.Rf1 Re8–/+) 0–1. Baumann,Erik – Weidel,Albrecht (2225), Dresden ZMD op, 2005.

7.d4 a6 =+.

7.d4 Bb4 8.Nc3 =+.

7.d4 b6 8.Bd3 Bb7 9.0–0 dc4 10.Bc4 Nd5 (10...a6 11.a4=) 11.e4 (11.Nbd2 a6=) 11...Nf4 (11...N5f6 12.e5 Nd5 13.Qe2=) 12.Qd2+= Ng6 13.Nc3 White prepares the advance d5 13...Nf6 14.Qd3 (14.Rfe1 a6+=) 14...Rc8 (14...c6 15.bc6 Bc6 16.Rfd1=) 15.Rad1 (15.d5 ed5 16.Nd5 c6 17.bc6 Bc6+=) 15...c5 (15...c6 16.bc6 Bc6 17.d5 ed5 18.ed5=) 16.bc6 (16.d5 ed5 17.Nd5 Nd5 18.ed5 Bf6 19.Bf6 Qf6+=) 16...Bc6 17.d5 ed5 18.Nd5 Nd5 19.ed5 Ba4 20.Rd2 Nf4? (better 20...Qd7 21.Ba6 Rcd8=) 21.Qd4+– Bf6 (21...Nh5 22.Ba6 Bd7+–) 22.Qf4 Bb2 23.Rb2 Qd6 1–0. DEFFM – GuestMBBY, freechess.org, 2018.

7.d4 b6 8.Bd3 Bb7 9.Qb3 c6 (9...a6 10.ba6 dc4 11.Bc4 Ba6 12.Ba6 Ra6 13.0–0=) 10.Nc3 (10.cd5!? Nd5 11.bc6 Bc6 12.Ba3=) 10...dc4+= 11.Bc4 cb5 ½–½. Alexiev,Peter – Olah,Gabor Mihaly, HUN–chT2 Toth, 2005.

7.d4 c6 8.a4 a6 9.c5 ab5 (9...e5 10.Be2=+) 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 (12.Qb3 b4=+) 12...Qa5 13.Nc3 Ne4 (13...b6 14.Qa4 Qa4 15.Na4 bc5 16.dc5 Nc5 17.Nc5 Bc5 18.Bf6 gf6 19.Ke2=+) 14.Qa4 Qa4 (better 14...Bd8!? 15.0–0 Ndc5 16.Qa5 Ba5 17.Nd5 ed5 18.dc5 Nc5=+) 15.Ba4 (15.Na4 Bf6 16.Ke2 Rd8+–) 15...Nc3 (15...Bf6 16.Ne4 de4 17.Nd2 Nc5 18.dc5 Ba1 19.Ne4+=) 16.Bc3+– Nf6 17.Ne5 Ne4 18.Bb2 (18.Bb4 f6 19.Nd3 Rd8+–) 18...Bf6 (18...Bh4 19.g3 Bf6 20.Nd3+–) 19.f4 (19.Nd3 Bd8+–) 19...Be5+= 20.fe5 f6 (20...b6 21.cb6 Ba6 22.Ba3+=) 21.0–0 (21.Rf1 fe5 22.Rf8 Kf8+=) 21...fe5 (better 21...Nd2 22.Rf2 Nc4+=) 22.de5 (better 22.Rf8 Kf8 23.Bc2=) 22...Rf1–/+ 23.Kf1 Nc5 24.Bb5 (24.Bc2 b6–/+) 24...Bd7 25.Bd7 (25.Bd7 Nd7 26.Bd4–+). GuestXRYJ – GuestDKSF, freechess.org, 2018.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 dc4 11.Bc4 Nb6 12.Be2 Bd7 (12...Nbd5 13.0–0=) 13.0–0 Nfd5 14.Nc3 Bf6 (14...Bb4 15.Qc2=) 15.Qc2+= Nc3 16.Bc3 Bc3 17.Qc3 Nd5 18.Qd4 c6 19.bc6 Bc6 20.Rc1 Nf6 21.Qb2 Qd5 22.Qa3 Rd8 23.d4 h6 24.h3 Rb8 25.Bd3 Rd8 26.Rc2 Rb8 27.Be2 Rd8 28.Ne1 Qd6 29.Qb2 Rb8 30.Nd3 Be4 31.Rc1 Bd5 32.Bf1 Ra8 33.Ne5 Nd7 34.Nc4 Qe7 35.f3 f5 36.Bd3 Qg5 37.Qe2 Rc8 38.Rb1 Ra8 39.Qf2 Rc8 40.Nd6 Rc6 41.h4 (41.Nb5 e5+=) 41...Qe7= 42.Nb5 Bc4 43.Bc4 Rc4 44.Qa2 Rc6 45.Qb3 (45.d5 ed5 46.Qd5 Kh8=) 45...Qh4= 46.d5 Rb6 47.de6 Nc5 48.Qd5 Ne6 49.Qf5 Qc4 50.Ra1 ½–½. Braak,Jelle Van Den (1965) – Jugaru,Lucian (1945), NED–ROU, 2013. (=1.Nf3 d5 2.b4 e6 3.b5 Nf6 4.Bb2 Nbd7 5.e3 Be7 6.c4 0–0)

7.Be2 a6 8.a4 dc4 9.Na3 ab5 10.ab5 +=.

7.Be2 a6 8.a4 dc4 9.Bc4 Nb6 10.Be2 ab5 11.ab5 Ra1 12.Ba1 Nfd5 (12...Bd6 13.0–0=) 13.Qb3 Bd7 14.0–0 Bd6 15.Nc3 Qe7 16.Bb2 Ra8 17.Nd5 ed5 18.Ra1 Qe8 19.Ra8 Qa8 20.Bd4 Qa4 21.Qa4 ½–½. Frydendal,Odd (1910) – Kinchant,Kevin D (2010), corr WS/H/204 ICCF, 2009.

7.Be2 a6 8.a4 Ne4 9.0–0 Bf6 (9...dc4 10.Nc3 Nd6 11.Qc2=) 10.d4 c5 (10...ab5 11.cb5 c5 12.bc6 bc6 13.Nc3=) 11.Nbd2+= cd4 12.ed4 Nd2 13.Qd2 dc4 14.Bc4 Nb6 15.Bd3 Nd5 16.g3 a5 17.Rac1 Qd6 18.Rfe1 (18.Ne5 Qb4 19.Qc2 g6+/–) 18...Rd8 (18...Qb4 19.Bc3 Nc3 20.Qc3=) 19.Bb1 (19.Ne5!?+/–) 19...g6 20.h4 (20.Be4 Qb4=) 20...b6 (20...Qb4 21.Bd3+=) 21.h5 (21.Rc4 Bb7 22.Be4 Rac8=) 21...Bb7+= (worse is 21...gh5 22.Qh6 Bg7 23.Qh7 Kf8 24.Nd2+–) 22.hg6 (22.Qe2 Rac8+= (worse is 22...gh5 23.Ne5+/–)) 22...hg6 23.Be4 Rac8 (23...Qb4 24.Ra1+=) 24.Rc8 (24.Ne5 Rc1 25.Rc1 Qb4 26.Qb4 ab4= (26...Nb4?? 27.Bb7 Kg7 28.Rc4+–)) 24...Rc8+= 25.Qh6 (25.Rc1 Rc1 26.Bc1 Qc7+=) 25...Qe7 26.Kg2 Bg7 27.Qd2 Nf6 (27...Rc4!? 28.Ra1 Qb4–/+) 28.Bb7= Qb7 29.Qe2 (29.Rc1!?=) 29...Qd5 30.Kg1? (better is 30.Rc1!? Rc1 31.Bc1+=) 30...Qb3–+ 31.Ba1 (31.Rb1 Qa4 32.Ne5 Nd5–+) 31...Rc2 32.Qe5?? Qf3 (32...Qf3 33.Qe3 Qe3 34.fe3 Ra2–+) 0–1. Dias,Jose (1655) – Bebchuk,Boris (2160), Porto POR, Euro Ch, 2014. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 Be7 5.e3 0–0 6.c4 Nbd7)

7.Be2 b6 8.0–0 Bb7 9.a4 a5 (9...dc4 10.Na3=) 10.Ne5 (10.d4 Bd6=) 10...Ne5=+ 11.Be5 c5 (11...Bd6 12.Bd6 cd6 13.Na3=+) 12.bc6= Bc6 13.Nc3 dc4 (13...Bd6 14.Bf6 Qf6 15.cd5 ed5 16.d4=) 14.Bc4 Nd5 (14...Bd6 15.Bd6 Qd6 16.Qe2=) 15.Qg4+= g6 (15...Nf6 16.Qe2+=) 16.Rfc1 Nc3 17.Bc3 Bd5 (17...Rc8 18.Qd4 Qd4 19.Bd4+= (worse 19.ed4 Bf6=+)) 18.Rab1 (18.Qd4 f6+=) 18...Rb8 (18...Bc4 19.Qc4 Rc8 20.Qe4+=) 19.Qd4+– f6 20.Bd5 Qd5 21.Qd5 ed5 22.Rb5 Rfd8 (22...Rfc8!?+–) 23.Rcb1+– 1–0. Pierre – Ajiz, internet, 2020.

7.Be2 b6 8.0–0 Bb7 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 a6=.

7.Be2 b6 8.0–0 Bb7 9.d4 Ne4 (9...a6 10.a4=) 10.Nbd2 Ndf6 (10...a6 11.Qc2 Nd2 12.Nd2 ab5 13.cb5=) 11.Ne5+= Nd2 12.Qd2 Ne4 13.Qc2 f5 (13...f6 14.Nc6 Bc6 15.bc6+=) 14.f3+– Nd6 15.c5 Nf7 (15...bc5 A) 16.Qc5? Nc4 17.Nc6 Bc6 (17...Bc5?! 18.Nd8 Rfd8 19.Bc4=) 18.Qc6 Nb2–+; B) 16.dc5 Nf7 17.Nd3+–) 16.c6 (16.Nd3 Bg5 17.f4 Bf6+–) 16...Bc8 17.Nd3 1–0. GuestMQWN – GuestBQKP, freechess.org, 2019.

7.Be2 b6 8.0–0 dc4 9.Bc4 Bb7 10.d3 Ng4 (10...a6 11.a4=) 11.h3 Nh6 12.e4 Bf6 13.Bf6 Qf6 (worse is 13...Nf6 14.g4+/–) 14.Nbd2 Ne5 15.Ne5 Qe5 16.Nf3 Qf4 17.g3 Qd6 18.Re1 Kh8 19.Rc1 a6 20.a4 ab5 21.ab5 Rfd8 22.Rc2 Ra5 23.Ng5 Qe7 24.h4 Rda8 25.Rc1 Bc8 26.e5 Kg8 27.Qe2 Bb7 28.Ne4 (28.d4 Nf5 29.Qc2 g6=) 28...Nf5 29.Ng5 (29.Qg4!?+=) 29...h6 30.Ne4 Rd8 31.Ra1 Rda8 (31...Nd4 32.Qg4+=) 32.Ra5 Ra5 33.Qb2 Ra8 34.Ra1 (better is 34.Rc1+=) 34...Be4?? (34...Ra1 35.Qa1 Be4 36.de4 Ng3 37.Qa8 Kh7 38.Qc6–+) 35.de4–+ Ra1 36.Qa1 Ng3 37.fg3 Qc5 38.Kg2 Qc4 39.Qb1 Qc3 40.Qd1 Qe5 41.Qe2 f5 42.Kf3 fe4 43.Qe4 Qe4 44.Ke4 Kf7 45.Ke5 h5 46.Ke4 Kf6 47.Kf4 e5 48.Ke4 Ke6 49.Kf3 Kd5 (49...Kd5 50.Ke3 Kc4–+) 0–1. Hasler,Ulrich (1680) – MacMillen,Andrew N (1830), 1st Webchess Open Tournament group, 2005.

7.Be2 Nb6 8.Qc2 dc4 9.Bc4 Nbd5 (9...Nc4!? 10.Qc4 a6+=) 10.0–0= Bd7 11.Nc3 c6 12.Ne5 Nc3 13.Nd7 Qd7 14.bc6 Qc6 15.Qc3 Rac8 16.Rac1 Qe4 17.Qb3 b6 18.Be2 h6 19.Bf3 Qg6 20.Rc4 Rc5 21.Rc5 Bc5 22.Qc4 a5 23.d4 Bb4 24.a3 Be7 25.Qc6 Bd8 26.e4 Qg5 (26...Nh7!? 27.Be2 Ng5+=) 27.Bc1 Qg6 28.Bf4 Re8?? (better is 28...Be7+/–) 29.e5+– 1–0. Nemeth,Laszlo1 (1985) – Deli,Gabor (2050), Fuzesabony op, 2004.

7.Be2 Nb6 8.cd5 Nbd5 (8...ed5 9.Qc2=) 9.0–0 b6 10.Nc3 a5 (10...a6 11.a4=) 11.Nd5 Qd5 (11...Nd5 12.Qc2+=) 12.Ne5 (12.Nd4 Qd7+–) 12...Qd6 (12...Bb7 13.Bf3 Qb5 14.Bb7 Qb2 15.Ba8 Qe5 16.d4+–) 13.Bf3 Rb8? (13...Nd5!?+–) 14.Nc6+– Rb7 (14...Bb7 15.Be5 Qd7 16.Nb8 Rb8 17.Rc1 Qb5 18.Bc7 Bf3 19.Qf3+– (19.gf3?! Rc8+–)) 15.a4 Nd5? (15...Re8+–) 16.Bd5 ed5 17.Ba3 (17.Ba3 Qa3 18.Ra3 Ba3 19.Qb3+–) 1–0. DEFFM – GuestZZDL, freechess.org, 2018.

7.Be2 dc4 8.Bc4 b6 9.0–0 Bb7 10.Nc3 Nd5 (10...Bf3!? 11.Qf3 Ne5=) 11.Nd5+= ed5 12.Be2 Bc5 (12...a6 13.a4=) 13.d4 Bb4 (13...Bd6 14.Bd3+=) 14.a4 (14.Bd3 a6+=) 14...Qe7 15.Qb3 Rae8 (15...Rfc8 16.Ba3 Ba3 17.Ra3+=) 16.Bc3 (16.Ba3 Ba3 17.Ra3 c5+=) 16...Bc3 17.Qc3 Qd6 (17...Rc8 18.a5+=) 18.Rac1 (18.a5 c5+–) 18...Rc8+= 19.Qb3 Rfe8 20.Bd3 Qf6 (20...c5 21.bc6 Bc6 22.Rc2+=) 21.Rc3 (21.Qb1 g6+–) 21...c5+= 22.bc6 (22.Rc5 Nc5) 22...Rc6 White creates threats along the open c–file 23.Rfc1 Rec8 24.Bb5 Rc3 25.Rc3 Rc3 26.Qc3 Nc5 27.Be2 Ne6 (27...Na4?? 28.Qc7 g6 29.Qb7+–) 28.Qb3 Qd8 29.Ne5 ½–½. Van Esbroeck,Dirk – Bey Boumezrag,Redha, corr ICCF, 1992.

7.Be2 dc4 8.Bc4 b6 (8...Nb6 9.Be2=+) 9.0–0 Bb7 10.Nc3 Bf3 (10...a6 11.d3=) 11.gf3 (11.Qf3 Ne5 12.Qf4 Nc4 13.Qc4 Qd2 14.Rab1=) 11...Ne5=+ 12.d3 Qd6 (12...a6 13.Qe2=+) 13.f4 Nc4 14.dc4 Rad8 (14...Qc5 15.Qe2=+) 15.Qe2 (15.Qd6 Rd6 16.Ba3 Rd7 17.Be7 Re7=) 15...Qd3 (15...a5 16.Rfd1 Qc5 17.e4=+) 16.Rad1 (16.Qd3 Rd3 17.Rfd1 Rfd8=) 16...Qf5 17.Rd8 Rd8 18.Rd1 Rd1 19.Qd1 Qh3 (19...Qg6 20.Kh1=+) 20.Qf1= Qf1 (20...Qg4 21.Qg2=) 21.Kf1 ½–½. Van Esbroeck,Dirk – Tuohy,T, CiF, 1990.

7.Be2 dc4 8.Bc4 Nb6 9.Be2 Bd7 10.0–0 c5 (10...c6 11.a4=) 11.a4 Bc8 (11...Rc8 12.Qc2=) 12.d4 Nbd5 13.Nbd2 a5 (13...a6 14.dc5 Bc5 15.Qc2+=) 14.ba6 (14.Rc1 b6+=) 14...b6 15.Ne5 (15.dc5 bc5 16.Ne5 Ba6=) 15...Ba6= 16.Nc6 Be2 17.Qe2 Qd7 (17...Qd6 18.Ne7 Qe7 19.e4+=) 18.Ne7 Ne7 (better is 18...Qe7!? 19.e4 Nb4+=) 19.dc5+/– bc5 (19...Nfd5 20.Rfc1+/–) 20.Bf6+– gf6 21.Ne4 Nd5 22.Nc5 Qc6 (22...Qe7 23.Rfc1+–) 23.Rfc1 Rfc8 24.h3 (better is 24.e4 Nf4 25.Qg4 Ng6 26.Rc2+–) 24...Qc5? (better is 24...Qd6 25.Qc4 f5+–) 25.Rc5 Rc5 26.Qg4 Kh8 27.Qd4 Rac8 28.a5 Rc4 29.Qd1 Nb4 30.Qf3 Kg7 31.Kh2 Na6 32.Qg3 Kh8 33.Rd1 Nc5 34.Qf3 f5 35.Ra1 Na6 36.Qb7 (36…R4c6 37.Qf7+–) 1–0. Bennett,Hilton Petrie – Jackson,L Ross, Auckland op, 1996.

7.Be2 Nc5 8.0–0 a6 9.Nc3 Qd6 (9...dc4 10.Bc4 ab5 11.Nb5+=) 10.a4 dc4 11.Bc4 a5 (better is 11...Nd5!?=) 12.d4+/– Nce4 13.Ne4 Ne4 14.Bd3 Nf6 15.Qc2 Bd7? (better is 15...Qd8+/–) 16.Ba3+– Qa3 17.Ra3 Ba3 18.Qc7 Rfc8 (18...Bc8 19.Ne5 Nd5 20.Qc2+–) 19.Qg3 (better is 19.Qb7!? Rab8 20.Qa7 Ra8+–) 19...Rc3 20.Ne5 Rac8 21.Nd7 Nd7 22.Be4 R8c7 (22...R3c7 23.Qf3 b6 24.Bc6+–) 23.Qf3 (better is 23.Bc6! R7c6 24.bc6 Rc6+–) 23...Nb6 24.Bb7 Na4 25.Bc6 Nb6 26.h4 Nc4 27.Qg3 Bd6 28.Qg4 a4 29.h5 a3 30.h6 g6 31.Qg5 Be7 32.Qf4 Rc8 33.d5 e5 34.Qg4 Nb6 35.f4 (better is 35.e4+–) 35...Re3+= 36.fe5 Bc5 37.Kh1 Re5 38.g3 Rh5? (better is 38...Rd8 39.Rc1 Rh5 40.Kg2 Nd5=) 39.Kg2+– Rf8 40.Qf4 (40.Qf3!? Bd4 41.Re1 Bb2+–) 40...Nd5+/– 41.Bd5 Rd5 42.g4 (42.Qf3 Rh5 43.Qc3+–) 42...Rd3 43.Rc1 (better is 43.Qc4!? Rd2 44.Kf3=) 43...Be3+= 44.Qf6 (44.Qe4 Rd2 45.Kg3 Bh6 46.b6–+) 44...Bh6–/+ 45.Rc2 Bg7 46.Qc6 Rb3 47.b6 (47.Qc4 Rb2 48.Qa4 Rb8–+) 47...Rb8 (better is 47...Bb2!? 48.Qc4 Rb6–+) 48.Qa4 (48.Qd6 R3b6 49.Qa3 h5–/+) 48...R3b6 (48...R8b6?! 49.Rc8 Bf8 50.Qe8 Rb2 51.Kf1 Rb1 52.Kf2 R6b2 53.Kg3 Rg1 54.Kf3 Rf1 55.Kg3 Rg1 56.Kf3 Rf1 57.Kg3 Rg1=) 49.Qa3 h6 50.Rf2 Bd4 51.Re2 Kg7 52.Rc2 Rb3 53.Qe7 Bf6 54.Qd7 R8b4 55.Kf2 (55.Rc7 Rb2 56.Kh1 Rb1 57.Kg2 R4b2 58.Kf3 Rf1 59.Ke4 Rb4 60.Ke3 Bd4 61.Ke2 Rf2 62.Kd3–+) 55...Rd4 56.Qc8 Rbb4 57.Kf3 Rf4 58.Kg3 Be5 59.Kh3 (59.Kg2 Rg4 60.Kf1 h5–+) 59...h5 (better is 59...Rg4 60.Qg4 Rg4 61.Kg4 h5 62.Kh4 Kh6–+) 60.gh5 Rf5 61.hg6 (61.Qf5 gf5 62.Re2–+) 61...Rb3 62.Kg2 (62.Rc3 Rc3 63.Qc3 Bc3 64.gf7 Kf7 65.Kg4 Rf2 66.Kg3 Bd4 67.Kh3 Ke6 68.Kg3 Kf5 69.Kh4 Be5 70.Kh5 Rh2) 62...Rg3 63.Kh1 Rf1 0–1. mr5reasons1 (1610) – bblchess (1630), gameknot.com, 2012.

7.Be2 c6 8.0–0 Nc5 9.d4 Nce4 10.Nc3 Nc3 11.Bc3 Ne4 12.Bd2 Nd2 13.Nd2 f5 14.bc6 bc6 15.cd5 cd5 (worse is 15...Qd5 16.Bf3 Qd7 17.Qa4+/–) 16.Nb3 Bd7 17.Qd2 Rc8 18.Rac1 Bf6 19.Nc5 e5?? (19...Be7 20.Ba6 Rb8 21.Rc2+=) 20.Nd7 (better is 20.de5 Bc6 21.ef6 Qf6 22.Rfd1+–) 20...Qd7+/– 21.de5 Be5 22.Bc4 (22.f4 Rc1 23.Rc1 Bf6+/–) 22...Rc5 (better is 22...Bh2!? 23.Kh1 Be5=) 23.Bb3+/– Rc1 24.Qd5 Qd5 25.Bd5 Kh8 26.Rc1 h6 27.g3 Rd8 28.Bb3 Bb8 29.Rd1 Rd1 30.Bd1 g5 31.Kf1 Kg7 32.Ke2 Kf6 33.Kd3 Ke5 34.a4 Bd6 35.f4 Kf6 36.Bb3 a5 37.Bc4 Bc5 38.Bd5 Bb4 39.Ke2 Ke7 40.Kf3 Kf6 41.h3 ½–½. mr5reasons1 (1655) – jbnugas (1685), gameknot.com, 2012.

7.Be2 Re8 8.d4 b6 9.0–0 Bb7 10.Nbd2 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 Qa8 14.Qc1 dc4 15.Qc4 Qb8 16.Ra1 Bd5 17.Qc2 Qb7 18.Bd3 Ra8 (18...c5!?+/–) 19.e4 Ra1 20.Ba1 Qa7 21.Bb2 (21.ed5?! Qa1 22.Nb1 Nd5 23.Bh7 Kh8=) 21...Ba8 22.e5 Ne8 23.Bh7 Kh8 24.Be4 Be4 25.Ne4 Qa5? (25...Kg8 26.Qc6 Qa2 27.Bc1+–) 26.h3 (better is 26.Qc6 Qa2 27.Bc1+–) 26...Qb5 27.Neg5 Bg5 28.Ng5 g6 29.Nf7 Kg7 30.Ng5 Qd5 31.h4 Nf8? 32.Ba3 c5 33.dc5 bc5 34.g3 Nd7 35.f4 Kh6?? 36.h5! Qd4 37.Kh2 Kh5 38.Qe2 Kh6 39.Bb2 Qd5+= 40.Bc3 Nf8 41.Ne4 Ng7 42.Nf6+/– Qb3 43.g4 g5 44.fg5+– Kg5?? 45.Qd3 Qa2 46.Kg3 Ng6 47.Bd2 Nf4 (47...Qd2 48.Ne4 Kh6 49.Qd2 Nf4 50.Qf4 Kg6 51.Qf6 Kh7 52.Ng5 Kg8 53.Qf7 Kh8 54.Qf8 mate) 1–0. Dumontelle,Joe – Fleming,D, Sudbury Summer RR, 2000.

7.Be2 h6 8.0–0 a6 9.a4 Nb6 (9...dc4 10.Bc4 Nb6 11.Be2=) 10.Qc2 (10.d3 Bd6+=) 10...dc4 11.a5 ab5? (better 11...Nbd5 12.ba6 Ra6 13.Bc4 Ra8=) 12.ab6+– Ra1 13.Ba1 cb6 (13...c6 14.d3 cd3 15.Bd3 Qb6 16.Rc1+–) 14.Nd4 (better 14.d3!?+–) 14...Bd7+– 15.Qb2 Bc6 (better 15...Qa8+–) 16.Nb5?? (better 16.d3+–) 16...Qd5–/+ 17.Bf3 (17.f3!? Qb5 18.Qc2–/+) 17...Qb5–+ 18.Qc3? (better 18.Qb5 Bb5 19.Bb7–+) 18...Bf3 19.gf3 Bb4 (19...Ra8 20.Qe5 Qe5 21.Be5–+) 20.Qd4 Qc5 21.Qf4 b5 (21...Qg5!? 22.Qg5 hg5 23.Bf6 gf6 24.Rc1–+) 22.Bf6 gf6 23.Qh6 Qg5 24.Qg5 fg5 25.Kh1? (25.Nc3!?–/+) 25...f6 (better 25...Be7–+) 26.Nc3–/+ Bc3 27.dc3 Rd8 28.Rb1 Rd5 29.Kg2 Kf7 30.Kf1 (30.e4 Re5–/+) 30...Ke7–+ 31.Ke2 Kd6 32.e4 Rc5 (32...Rd3 33.Rb5 Kc6 34.Rb3–+) 33.Ke3–/+ Kc6 (33...e5 34.Kd2–/+) 34.Kd4? (34.f4 gf4 35.Kf4 Rh5–/+) 34...e5–/+ 35.Ke3 Kb6 36.Rb4 (36.Rh1–+) 36...Rc8 37.Ke2 Rh8 0–1. GuestLJTQ – Atyeo, freechess.org, 2017.

7.Qc2 b6

8.d4 a6 9.Ba3 =.

8.d4 Bb7 9.Nbd2 (9.cd5 Nd5 10.e4 Nb4=) 9...c5 10.bc6 (10.Bd3 cd4 11.Bd4 Nc5=) 10...Bc6=+ 11.Be2 dc4 12.Bc4 Rc8 13.Qb3 Bd5 (13...b5 14.Be2=+ (14.Bb5? Bb5 15.Qb5 Rb8–+)) 14.0–0 (14.Bd5 Nd5 15.0–0 N7f6=) 14...Bc4 15.Nc4 b5 (15...a6 16.Rfc1=) 16.Nce5 (16.Qb5!? Nb6 17.Nb6+/–) 16...Qb6 17.Rfc1 Bd6 (17...Ne5 18.de5 Ne4 19.Bd4=) 18.Rc2 Rc2 19.Qc2 Be5 (19...a6 20.Rc1=) 20.Ne5 (20.de5 Nd5+=) 20...Ne5= 21.de5 Nd5 22.Bd4 Qb8 23.Rc1 a5 (23...Rd8 24.e4 Nb6 25.Rd1=) 24.a3 (24.Qe2 b4=) 24...b4 25.ab4 ab4 (25...Qb4? 26.Bc5 Qb8 27.Bf8 Qf8 28.Qa4+–; 25...Nb4?! 26.Qe4=) 26.g3 (26.Qb2 Qb5=) 26...Qb5 (26...Rd8 27.Qb2=) 27.Qb3 (27.e4 Ne7=) 27...h6 (27...Qe2 28.Qb1 Rb8 29.e4=+) 28.Rc4 Rd8 (28...Ra8 29.Bb2 Ra4 30.Rc8 Kh7 31.Rd8=) 29.e4 Ne7 30.Rb4 Qe2 31.Qb1?? (better is 31.Rc4=) 31...Nc6–+ 32.Rb2 Qc4?? (better is 32...Qh5 33.f4 Rd4–+ (< 33...Nd4 34.Qf1–+)) 33.Be3= Ne5 34.Rb8 (34.Rb4 Qc3=) 34...Nc6 (34...Nf3 35.Kg2 Ne1 36.Kg1 Rb8 37.Qb8 Kh7 38.Qf4=) 35.Rd8+= Nd8 36.Qb8 Qd3 37.Bb6 (37.h4 Kh7+=) 37...Qb1= 38.Kg2 Qe4 39.Kh3 Qf5 40.Kg2 Qe4 41.Kh3 ½–½. Luneau,Gilles – Kaiser,Johann, Wch Seniors Bad Liebenzell, 1996.

8.Nd4 Bb7 9.cd5 Nd5 10.Nc6 Bc6 11.Qc6 Nc5 (11...Nb4 12.Qc3 Ne5 13.d4 (13.Qe5? Bf6 14.Qe4 Bb2 15.Qb4 Ba1–+) 13...Nbd3 14.Ke2 (< 14.Bd3 Bb4 15.Be4 Bc3 16.Bc3 Nc4–+) 14...Nb2 15.Qb2=+) 12.a3 Bf6 (12...Nb3 13.Ra2=) 13.Nc3 (13.d4 a6=) 13...Nb3 (better is 13...Bc3 14.Bc3 a6 15.ba6 Nc3 16.dc3 Qf6=) 14.Qc4? (better is 14.Nd5 Bb2 15.Rb1=) 14...Na1–+ 15.Ba1 Nc3 (15...Rc8 16.Bd3–+) 16.Bc3 Bc3 17.Qc3 Qd6 18.Be2–/+ Rad8 19.d3 Qd5–+ 20.0–0 Qb5 21.Qc7 Qb2 22.Re1 Qa3 23.d4 Rb8 24.Bf3 Rfc8 25.Qe5 Qc3 26.Rd1 Qc7 27.Qb5 Qc4 28.Qh5 Qc2 29.d5 ed5 30.Qd5 Qc5 31.Qd3 Qc7 32.Bd5 g6 33.h4 Qc3 34.Qe4 Qf6 35.h5 Kg7 36.hg6 hg6 37.Qb1 Rc7 38.Rc1 Rbc8 39.Rc7 Rc7 40.e4 Qc3 41.Kh2 Qc1 42.Qd3 Qf4 43.Qg3 Qg3 44.Kg3 a5 45.f4 a4 46.Kf3 a3 47.g4 Rc2 48.f5 a2 49.Ba2 Ra2 50.e5 gf5 51.gf5 f6 52.e6 Kf8 53.Ke4 Rd2 (54.Ke3 Rd6–+) 0–1. Luneau,Gilles – Greifzu,Helmut, Wch Seniors Bad Wildbad, 1997.

8.cd5 ed5 9.Qc6 Rb8 =.

8.cd5 ed5 9.Ne5 Bd6 =.

8.Be2 a6 9.cd5 Nd5 10.Nd4 =.

8.Be2 Bb7 9.d3 dc4 10.dc4 Be4 11.Bd3 (11.Qd2 a6=) 11...Bd3 (11...Bf3 12.gf3 Nc5 13.Be2=+) 12.Qd3 Nc5 13.Qd8 Rfd8 14.Ke2 (14.Ne5 Nfe4=+) 14...Nfe4 (14...Ng4=+) 15.Nfd2 (better is 15.Be5!?=) 15...Nf2!–/+ 16.Bd4? (16.Kf2 Nd3) 16...Nh1–+ 17.Nc3 Nf2 18.Kf2 e5! 19.Bc5 (19.Be5 Nd3) 19...Rd2 (19...bc5?! 20.Nd5 Kf8 21.e4–+; 19...Bc5?! 20.Nde4–+) 20.Ke1 Rg2 (20...Bc5?! 21.Kd2 a6 22.a4–/+) 21.Be7 (21.Kf1 Rh2 (21...bc5?! 22.Kg2 f5 23.Rd1–/+) 22.Kg1 Rc2 23.Be7 Rc3–+) 21...Rg1 22.Kf2 Ra1 23.a3 (23.Ba3 Rd8 24.Kf3 Rd2–+) 23...f6 (23...Rc1!? 24.Nd5 Rc4 25.Kg3–+) 24.Nd5 Kf7 25.Bb4 (25.Nc7 Rc8 26.Nd5 Rc4–+) 25...Rc8 (25...Rc1 26.Nc7 Rd8 27.Na6 Rc4 28.Kf3–+) 26.Ne7 Rd8 27.Nd5 (27.h3 a5 28.ba6 c5–+) 27...Rd7 (27...Rc1 28.Nc3–+) 28.Kg3 (28.h3 Rh1–+) 28...Rc1 29.Bc3 (29.Nc3 Rd3 30.Ne2 Rc4–+) 29…Rd5! (30.cd5 Rc3–+) 0–1. Luneau,Gilles – Klovans,Janis (2530), Wch Seniors Bad Liebenzell, 1996.

8.Be2 Nc5 9.0–0 a6 (9...dc4 10.Bc4 a6 11.Ng5=) 10.a4 (10.d4 Ncd7+=) 10...ab5 11.ab5 Bd7? (11...Ra1 12.Ba1 dc4 13.Bc4=) 12.Nc3 (12.Ra8 Qa8 13.Bf6 Bf6+–) 12...Qb8 (12...c6 13.d4 Nce4 14.Ne4 Ne4 15.Ne5 Ra1 16.Ra1 cb5 17.Ra7+=) 13.Ra8 Qa8 14.Ra1 Qb7 15.Ne5 Ra8 16.d4 Ra1 17.Ba1 Nce4 18.cd5 ed5 (18...Nc3 19.Bc3 ed5 20.Bd3+=) 19.Ne4 de4 20.Bb2 Be6 21.h3 (21.Bc4 Bd6+=) 21...h6 (21...Bd6 22.Nc6=) 22.Nc6 (22.Bc4 Bd6 23.d5 Bd5+=) 22...Bd6+= 23.f3 Bd5 24.fe4 Be4 25.Qd1 (better 25.Bd3 Bc6 26.Qc6 Qc6 27.bc6+–) 25...Bc6=+ 26.bc6 Qc6 27.d5 (27.Bd3 Qa8=+) 27...Qe8 (better 27...Qd5 28.Bf6 Qd1 29.Bd1 gf6–/+) 28.Qd4?? (better 28.Qd3–/+) 28...Bc5–+ 29.Qe5 Be3 30.Kf1 Qe5 31.Be5 Nd5 32.Bf3 Bf4 (32...c6!? 33.Ke2 Bc5 34.Kd3–+) 33.Bd5 Be5 0–1. GuestSFDF – MyTargetUrKing, freechess.org, 2017.

7.d4 dc4

8.Bc4 a6 9.ba6 b6 10.Qe2 =.

8.Bc4 Nb6 9.Bd3 Bb4 10.Nbd2 Qd5 (10...Bd7 11.Ne5=) 11.0–0 (11.a3 Bd2 12.Qd2 Bd7+=) 11...Bd2 (11...Bd7 12.e4 Qh5 13.a4+=) 12.Nd2+– Bd7 (12...Qd6 13.Qc2+–) 13.a4 (13.e4 Qg5+–) 13...Qg5 (13...c6 14.a5 Nc8 15.e4+–) 14.Ne4 (14.Nf3 Qh6+–) 14...Ne4 15.Be4 Nd5 (15...c6 16.Qd3+–) 16.Qc2 c6 (16...h6 17.f4 Qd8 18.Qd3+–) 17.Bh7 Kh8 18.f4 (18.Be4!? cb5 19.f4+–) 18...Qf6 19.Rf3 g6 20.Rh3 (20.bc6 Bc6 21.Bg6 fg6+= (21...Qg6? 22.Rh3 Kg8 23.Qe2+–)) 20...Kg7 21.e4 (21.Ba3 Rfc8 22.Bd6 cb5+=) 21...Rh8 (21...Nf4 22.Rf3 Qh4 23.Raf1=) 22.f5+= Rh7 23.Rh7 Kh7 24.ed5 ed5 (worse 24...cd5 25.Qc7 Qd8 26.fg6 Kg6 27.Qc2 f5 28.Qe2+–) 25.bc6 Bc6 (25...Qc6 26.fg6 Qg6 27.Qf2=) 26.Rf1 (26.fg6 Qg6 27.Qf2 Re8+=) 26...Kg7 (26...g5 27.Re1+=) 27.Rf3 (27.fg6 Qg6 28.Qd1 Rh8+=) 27...Qh4 28.g3 (28.fg6 fg6 29.h3 Re8+=) 28...Qe4 29.Qf2 (29.f6 Kh7 30.Qb3 Re8=) 29...Re8 (29...Qb1 30.Kg2 Ba4 31.fg6 Qg6 32.Bc1–/+) 30.Bc3 (30.fg6!? Qg6 31.a5=) 30...Qb1 31.Kg2 Qd1 (31...Ba4 32.fg6 Qg6 33.Re3–/+) 32.f6 (32.Re3 Re3 33.Qe3 Ba4 34.f6 Kh7=+) 32...Kg8 33.Re3 Re3 (33...Qa4 34.Re7–/+) 34.Qe3=+ Qc2 35.Kg1 Qb1 (35...Qa4 36.Qh6 Qd1 37.Kf2 Qc2 38.Kg1 Qb1 39.Kg2 Qc2 40.Kg1 Qd1 41.Kf2 Qc2 42.Kg1=) 36.Be1 (36.Qe1 Qd3 37.a5=+) 36...Qe4 (better 36...Ba4!? 37.g4 b6–/+) 37.Qe4= de4 38.a5 Bd5 (38...e3 39.Bb4=) 39.Kf2+= Kh7 (39...g5 40.Bd2 g4 41.Ke3+=) 40.h4 (40.Bd2 b5+=) 40...Kh6 (40...g5!?=) 41.g4+– Be6 (41...Kh7 42.Ke3+–) 42.Bd2+– White plans g5 42...Kh7 43.g5 Kg8 (43...Bd5 44.Ke3+–) 44.Bb4 (44.Ke3 Bd5+–) 44...b6 45.a6 (45.ab6 ab6 46.Ke3 Bd5+–) 45...Bc4+= 46.Ke3 Ba6 47.Ke4 Bb7 48.Ke5 a5 (48...Bf3 49.Be7+=) 49.Be7 b5 50.Kd6 b4 51.Kc7 b3 (51...Be4 52.Kb6 b3 53.Ba3+– (53.Ka5?? b2–+)) 52.Ba3 (52.Kb7?? b2–+) 52...Bd5 (52...Be4 53.Kb6 a4 54.Kb5+–) 53.Kd6 (53.Kb6 a4+–) 53...Bb7 (better 53...Bf3 54.Kc5 Be2+–) 54.Ke7 (better 54.Kc5+–) 54...Bd5 55.Bb2 Bc4 (55...Be6 56.Kd6 Kf8 57.Kc6=) 56.Ba3 (56.Kd6 a4=) 56...Bd5 57.Kd6 Bb7 58.d5 (58.Kc5!?+–) 58...Ba8+= 59.Ke5 (59.Kc5 Kf8 60.Kc4 Ke8 61.Kb3 Bd5 62.Ka4+=) 59...b2 (59...a4 60.Kd4+=) 60.Bb2+– Kf8 61.Ba3 (61.d6 Bc6+–) 61...Ke8 62.d6 Bc6 63.Kf4 (63.Kd4 a4+–) 63...Bd7 64.Kg3 Be6 65.h5 gh5 66.Kh4 Bf5 ½–½. Ferreiro Montoya,JF – Alcazar Jimenez,JA, Ponferrada, 1997.

8.Bc4 Nb6 9.Bb3 Bd7 10.a4 c5 11.0–0 cd4 12.Bd4 Rc8 13.Nbd2 Bc5 14.Bc5 Rc5 15.Rc1 Qe7 16.Nc4 Nc4 17.Bc4 Rfc8 18.Nd2 Ne4 (18...a6!? 19.ba6 ba6+=) 19.Ne4= Rc4 20.Rc4 Rc4 21.Nd6 Rc7 22.Ne4 b6 23.h3 e5 24.Qd2 h6 25.Nc3 Qc5 26.Rc1 Bf5 27.Ne2 (27.Qd8!? Kh7 28.Na2+=) 27...Qe7= 28.Nc3 Qg5 29.g4 Rd7 30.Qe2 Bd3 31.Qf3 Qe7 32.Rd1 Qb4 33.Rc1?? (better is 33.Qc6 Rd8 34.Qc7+=) 33...Qb2 34.Qd1 h5 35.Qe1 hg4 36.hg4 Qb4 37.f3 e4 (37...Bc4 38.g5–/+) 38.Ne4 Qe1 (38...Qa4?? 39.Rc8 Rd8 40.Rd8 Kh7 41.Qh4 Kg6 42.Qh5) 39.Re1 Be4 40.fe4 Re7 41.Kf2 Re4 42.Kf3 Ra4 43.Rd1 Kf8 44.Rd7 Ke8 45.Rc7 Rb4 46.Ra7 Rb5 47.Rb7 Rb4 48.Rb8 Ke7 49.Rb7 Ke6 50.Kg3 Kf6 51.Kf3 g5 52.Kg3 Ke6 53.Kf3 f5 54.gf5 Kf5 55.e4 Ke5 56.Kg4 (better is 56.Re7!? Kf6 57.Rd7–/+) 56...Ke4–+ 57.Kg5 Kd5 0–1. Valpa – MAGICIAN, playchess.de, 2002.

8.Bc4 Nb6 9.Bb3 Bd7=+ 10.Qd3 a6 (10...c6 11.a4=+) 11.a4 (11.ba6 Ra6 12.Ne5 Ba4=+) 11...Nbd5 (11...ab5!? 12.ab5 Ra1 13.Ba1 Qa8–/+) 12.0–0= Nb4 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.Qe2 c6 (13...ab5 14.ab5 Ra1 15.Ba1=) 14.Nc3 Qb6 (14...Nbd5!? 15.ba6 Ra6=) 15.a5+= Qd8 16.b6 c5 (16...Nbd5 17.e4 Nc3 18.Bc3+/–) 17.dc5 (17.Rfd1 cd4 18.Nd4 Qb8+/–) 17...Bc5 (17...Rc8 18.Rfd1 Rc5 19.Nd2+=) 18.Rfd1 Qe7 19.Ne5 Rad8 (19...Bc6 20.Na4+=) 20.Nd7 Rd7 21.Qc4 (21.Rd7 Qd7 22.Ne4 Ne4=+) 21...Nc6 (21...Rd1 22.Bd1 Nc6 23.Bf3=) 22.Rd7+= Nd7 23.Ne4 Bb4 24.Bc3 ½–½. Gross,Wilhelm – Merten,Rainer, xiii/07, 1986.

8.Bc4 Nb6 9.Bd3 Bb4 10.Nbd2 Qd5 11.0–0 Bd2 12.Nd2 Bd7 13.a4 Qg5 14.Ne4 Ne4 15.Be4 Nd5 16.Qc2 c6 17.Bh7 Kh8 18.f4 Qf6 19.Rf3 g6 20.Rh3 Kg7 21.e4 Rh8 22.f5 Rh7 23.Rh7 Kh7 24.ed5 ed5 25.bc6 Bc6 26.Rf1 Kg7 27.Rf3 Qh4 28.g3 Qe4 29.Qf2 Re8 30.Bc3 Qb1 31.Kg2 Qd1 32.f6 Kg8 33.Re3 Re3 34.Qe3 Qc2 35.Kg1 Qb1 36.Be1 Qe4 37.Qe4 de4 38.a5 Bd5 39.Kf2 Kh7 40.h4 Kh6 41.g4 Be6 42.Bd2 Kh7 43.g5 Kg8 44.Bb4 b6 45.a6 Bc4 46.Ke3 Ba6 47.Ke4 Bb7 48.Ke5 a5 49.Be7 b5 50.Kd6 b4 51.Kc7 b3 52.Ba3 Bd5 53.Kd6 Bb7 54.Ke7 Bd5 55.Bb2 Bc4 56.Ba3 Bd5 57.Kd6 Bb7 58.d5 Ba8 59.Ke5 b2 60.Bb2 Kf8 61.Ba3 Ke8 62.d6 Bc6 63.Kf4 Bd7 64.Kg3 Be6 65.h5 gh5 66.Kh4 Bf5 ½–½. Ferreiro Montoya,JF – Alcazar Jimenez,JA, Ponferrada, 1997.

8.Nbd2 Nb6 9.Nc4 Nc4 10.Bc4 Bb4 11.Ke2 Bd7 12.Ne5 Ne4 13.Qb3 Ba5 14.Bd3 Nd6 15.Rac1 Qe8 16.Nd7 (16.Qa4 Bb6 17.Nd7 Qd7=) 16...Qd7= 17.Rc5 Rae8 18.Qa4 b6 (18...Bb6!? 19.Rh5 f5=) 19.Rh5+= g6 20.Rh3 (better is 20.Re5!?+=) 20...a6=+ 21.d5 ab5 22.Rh7!! f6?? (22...Kh7 23.Qh4) 23.Bg6 (better is 23.Rd7 ba4 24.Bg6 ed5 25.Be8 Ne8 26.Rd5 Kf7+–) 23...ba4? (better is 23...Re7 24.Re7 Qe7+– (24...ba4?? 25.Rd7 ed5 26.Bh7 Kh8 27.Rc7+–)) 24.Rd7 Rc8 25.de6 Nc4 26.Ba1 Ne5 27.Be5 fe5 28.e7 Rfe8 29.h4 (better is 29.Be8!? Re8 30.Rc7 Kf7+–) 29...c5 30.h5 c4 31.h6 c3 32.Be8 Re8 33.Rd8 (33...Kh7 34.Re8+–) 1–0. Bowers,D – Cooper,C, Denver CO USA, 1988.

6.d4 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 c5 (9...c6 10.Bd3=+) 10.bc6 (10.dc5 Ne4=+) 10...Nc6 11.Nbd2 Qa5 12.Be2 b5 (12...Bd7 13.0–0=+) 13.0–0 Ba6 14.Nb3 Qb6 15.Bd3 (15.Nc5 Bc5 16.dc5 Qc5=+) 15...b4 16.Qe2 Bd3 17.cd3 Na5 18.Nfd2 (18.Na5 Qa5 19.Rc1 b3–/+) 18...Rc8 19.f4 Nb3 20.Nb3 Qc6 21.Qd2 Qa4 22.Rb1 Ne8 (22...Nd7 23.Qd1–/+) 23.Qf2 (23.h3!?=) 23...Qc6–/+ 24.Qe1 Ra8 (24...h6 25.Nc5 Bc5 26.dc5 Qc5 27.Rb4–/+) 25.Qd2 Nd6 26.Nc5 (< 26.Qb4 Qc2 27.Rc1 Qd3–/+) 26...Nf5 (26...Nb7!? 27.Qb4 Nc5 (< 27...Bc5 28.dc5 Nd8 29.Bc3+–) 28.dc5 Bc5=+) 27.g4+= Nh4 (< 27...Bc5 28.dc5 Nh4 29.Qb4+/–) 28.Qb4 e5 29.fe5 (29.Kh1 ef4 30.ef4 Bc5 31.Qc5 Qe6–/+) 29...Qg6 (29...Qh6 30.Qb2 Bc5 31.dc5 Qe3 32.Kh1 Qf3 33.Kg1 Qg4 34.Kf1 Qf3 35.Kg1 Qe3 36.Kh1–+) 30.h3= Qh6 31.Kf2 Ng6 32.Qb3 Qh3=+ 33.Qd5 Bh4 34.Ke2 Ra2!? 35.Bb2 Rb2 36.Rb2 Qh2 37.Kd1 Qb2 38.e6 Qf2 39.Ne4? Qf1–/+ 40.Kc2 Qe2 41.Kc3 Qf3 42.Qc6=+ fe6 43.Qe6 Qf7 44.Qc8 Nf8 45.Qc4 g6 46.Nd6 Qe6 47.Ne4 h6 48.Nc5 Be1 49.Kc2 Qf7 50.e4 Kg7 51.e5 Qf3 52.e6 Qg4 53.Qd5 Qe2 54.Kb3 Qd1 55.Kb2= Qd2 56.Kb1 Qb4 57.Kc2 Bc3 58.Qe5 Kg8 59.Nb3 Qe7 60.Kc3 Ne6 61.Nc5 Kf7 62.Kc4 h5 63.Qd5 h4 64.Qf3 ½–½. Baumann,Heinz – Baer,Werner, TT–17.29 ETC, 2005.

7.a4 c5 8.c4 Qc7 9.Qb3 Nbd7 10.Nbd2 b6 11.Be2 a5 (11...cd4 12.Nd4 Nc5 13.Qd1=+) 12.0–0 Bb7 13.Rac1 Rac8 14.Ba3 Qb8 15.Qb1 Bd6 16.Bb2 (16.cd5 ed5 (< 16...Bd5 17.e4+/–) 17.Qf5 cd4 18.Bd6 Qd6 19.ed4 Qb4=) 16...e5 (better is 16...cd4!? 17.ed4 dc4 18.Rc4 Rcd8=+) 17.de5= Ne5 18.Qf5 Rce8 19.h3 Bc8 20.Qc2 Re7 21.cd5 Nd5 22.Ne5 Be5 23.Nf3 Bb2 24.Qb2 Rfe8 25.Bc4 Qb7 26.Ng5 h6 27.Rcd1 (27.Nf3 Nb4 28.Qe2 Qe4=) 27...Nf6 28.Rd6?? (better is 28.Nf7 Rf7 29.Rd6=+) 28...hg5–+ 29.Rf6 Qe4 30.Rc1? gf6 31.Qf6 Re6 32.Qg5?? Qg6 33.Qf4 R6e7 34.Rd1 Bh3 35.g3 Qg4 36.Qg4 Bg4 37.Rd5 Re6 (38.Rg5 Kf8 39.Rg4 Re4–+; better is 37...Re4 38.Bd3 Ra4–+) 0–1. Nielsen,Joergen Axel – Andersen,B, Denmark, 1969.

7.a4 c6 8.c4 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qa5 13.Nc3 Ne4 14.Qa4 Bb4 15.0–0 Nc3 16.Qa5 Ba5 (17.Bc3 Bc3–+) 0–1. Player – MacChess 5.0, 2000.

6.d4 c5

7.c4 cd4 8.Qd4 Qa5 A) 9.Bc3 Qc7 (9...Qd8 10.Be2 dc4 11.Qc4 Nbd7 12.0–0 Nb6 13.Qb3 Nbd5 14.Rd1 Bd7+=; 9...Qa4 10.cd5 Qd4 11.Bd4 Nd5 12.Nc3 Bb4 13.Rc1 a6 14.ba6 Na6=) 10.cd5 Rd8 11.Bc4 Nbd7 12.Nbd2 Nb6 13.Rc1 Nbd5 14.0–0 a6=; B) 9.Nbd2 dc4 (9...Rd8 10.cd5 Rd5 11.Qc3 Qd8 12.Bc4 Rc5 13.Ne4 Rc7 14.0–0 a6+=; 9...Nbd7 10.cd5 ed5 11.Be2 Bc5 12.Qd3 Bd6 13.0–0 Nc5 14.Qd4 Bg4=; 9...Bd7 10.cd5 ed5 11.a4 Rc8 12.Bd3 Bg4 13.0–0 Nbd7 14.h3 Bf3+=; 9...a6 10.cd5 ed5 11.a4 Nbd7 12.Bc3 Qd8 13.Rc1 Nc5 14.a5 Ne6=) 10.Bc4 Rd8 11.Qc3 Qc3 12.Bc3 a6 13.Ba5 Re8 14.ba6 Na6=; C) 9.Qd2 Qd8 (9...Qd2 10.Nbd2 a6 11.a4 Rd8 12.Ba3 Ba3 13.Ra3 b6 14.cd5 Nd5=; 9...Qb6 10.Bd4 Qd8 11.Nc3 Ne4 12.Qc2 Bb4 13.a3 Bc3 14.Bc3 Re8+=; 9...Qc7 10.cd5 Nd5 11.Nc3 Bb4 12.Rc1 Qa5 13.Ne5 Rd8 14.a3 Bc3+=; 9...Bb4 10.Bc3 Bc3 11.Nc3 dc4 12.Rd1 Qb4 13.Ne5 Nbd7 14.Nc4 Rd8+=) 10.cd5 Qd5 11.Ba3 Qd2 12.Nfd2 Ba3 13.Na3 a6 14.b6 Rd8=.

7.c4 cd4 8.Qd4 a6 A) 9.Bd3 dc4 (9...ab5 10.cb5 Nbd7 11.0–0 Nc5 12.Be2 Qb6 13.a4 Qa5 14.Nbd2 Bd7=; 9...Nbd7 10.cd5 Nc5 11.Be2 Qd5 12.ba6 ba6 13.Qd5 Nd5 14.Nc3 Bb7=) 10.Qc4 ab5 11.Qb5 b6 12.Ne5 Ba6 13.Qb3 Bd6 14.Nc4 Bb4=+; B) 9.cd5 Qd5 (9...ed5 10.Ne5 ab5 11.Bb5 Qa5 12.Nc3 Ne4 13.0–0 Bf6 14.Rfb1 Bf5=) 10.Bc4 Qd4 11.Bd4 ab5 12.Bb5 Rd8 13.0–0 Bd7 14.Bd3 Nc6=; C) 9.Nc3 ab5 (9...dc4; 9...Qa5; 9...Re8; 9...b6) 10.cb5 Nbd7 11.Bd3 Re8 12.Be2 e5 13.Qd1 Ba3 14.Ba3 Ra3=; D) 9.a4 ab5 (9...Nbd7; 9...Bb4; 9...b6; 9...dc4; 9...Bd7) 10.ab5 Bb4 11.Nbd2 Ra1 12.Ba1 Qa5 13.Bb2 Rd8 14.Bd3 e5–/+; E) 9.Be2 dc4 10.Qc4 ab5 11.Qb5 b6 12.Bd4 Nbd7 13.Qb2 Bb7 14.0–0 Qc7=.

7.c4 cd4 8.Qd4 b6 A) 9.Nc3 dc4 (9...a6 10.cd5 Bc5 11.Qh4 Nd5 12.Qd8 Rd8 13.0–0–0 Be7 14.Nd5 ed5=; 9...Bc5 10.Qd3 a6 11.cd5 ed5 12.a3 ab5 13.Nb5 Nc6 14.Be2 Ne4=; 9...Bb7) 10.Rd1 Qd4 11.Rd4 a6 12.Bc4 Bb7 13.a4 Rc8 14.Bd3 ab5=; B) 9.Bd3 a6 (9...Nbd7 10.cd5 Nc5 11.Nc3 Nd3 12.Qd3 Bb7 13.Rd1 Nd5 14.e4 Nf6=; 9...Bb7 10.0–0 dc4 11.Qc4 Bf3 12.gf3 Nbd7 13.Rd1 Qe8 14.Qh4 Rd8=; 9...dc4 10.Qc4 Bb7 11.0–0 Bf3 12.gf3 Nbd7 13.Rd1 Rc8 14.Qh4 Re8=; 9...Bc5) 10.cd5 Qd5 11.Ba3 Ba3 12.Na3 Bb7 13.0–0 Nbd7 14.Rfd1 ab5=+; C) 9.Be2 dc4 (9...a6; 9...Bb7; 9...Bc5) 10.0–0 a6 11.Qc4 ab5 12.Qf4 b4 13.Rd1 Nbd7 14.Qg3 Bb7=+; D) 9.cd5 Bc5 (9...Qd5 10.Be2 Rd8 11.Qd5 Nd5 12.Nc3 Bb7 13.Rd1 a6 14.a4 Bd6=) 10.Qc3 Qd5 11.Qc2 Nbd7 12.Nc3 Qh5 13.Be2 Bb7 14.0–0 a6=.

7.c4 cd4 8.Qd4 dc4 A) 9.Qd8 Rd8 10.Ba3 Ba3 11.Na3 c3 12.Rc1 a6 13.Rc3 ab5 14.Bb5 Bd7=+; B) 9.Qc4 a6 (9...Nbd7 10.Be2 a6 11.0–0 ab5 12.Qb5 Ra5 13.Qb3 Qc7 14.Rc1 Nc5=; 9...Re8; 9...Nd5; 9...Bd7; 9...Bd6) 10.Nc3 Qa5 11.Bd3 Bd7 12.0–0 Rc8 13.Qb3 ab5 14.Nb5 Na6=; C) 9.Bc4 Qc7 (9...a6 10.a4 Qc7 11.b6 Qc6 12.0–0 Rd8 13.Ne5 Qe8 14.Qf4 Nd5+=; 9...Qa5 10.Qd2 Qa4 11.Qe2 Rd8 12.0–0 Ne4 13.Nc3 Nc3 14.Bc3 Nd7+=; 9...Qd4 10.Bd4 a6 11.Nc3 Rd8 12.Bb6 Rd7 13.Rb1 Ng4 14.h3 Nh6+=; 9...Bb4 10.Nbd2 a6 11.ba6 Na6 12.0–0 Qd4 13.Bd4 Rd8 14.Rfd1 Bd7+=; 9...Nbd7 10.0–0 a6 11.Rd1 ab5 12.Bb5 Qc7 13.Qc3 Qc3 14.Nc3 Rd8=) 10.0–0 Rd8 11.Qc3 a6 12.Rc1 ab5 13.Bb5 Nc6 14.Nbd2 Bd7=.

7.c4 cd4 8.Qd4 Nbd7 9.Qc3 (9.cd5 Bc5 (9...ed5 10.Be2 Bc5 11.Qd3 Bd6 12.0–0 Nc5 13.Qd4 Bf5 14.Rd1 Qc7+=) 10.Qd2 ed5= 11.Be2 Nb6 12.0–0 Qe7 13.Qd3 Bg4 14.Nbd2 Bh5=; 9.Nbd2 Bc5 (9...Qa5; 9...Nc5; 9...Re8; 9...a6; 9...Bd6) 10.Qh4 Bd6 11.Be2 a6 12.ba6 ba6 13.0–0 Rb8 14.Rab1 Bb7=; 9.Bd3 Nc5 (9...Bc5; 9...dc4; 9...a6) 10.Bc2 a6 11.Ng5 h6 12.Nh7 Re8 13.ba6 Ra6 14.cd5 ed5=+) 9...Nc5 (9...Nb6 10.Qc2 dc4 11.Bc4 Nc4 12.Qc4 Bd7 13.0–0 Qa5 14.a4 a6=+) 10.a4 (10.Qd4!?=+ Qa5 11.Bc3 Qb6 12.cd5 Rd8 13.Bc4 ed5 14.Be2 Bd7=) 10...Nce4–/+ 11.Qd4? (11.Qb3 Qa5 12.Nc3 (12.Nfd2 Bb4 13.Qd1 Bd2 14.Nd2 Ng4–+) 12...Bb4–/+ 13.Rc1 Nc5 14.Qc2 Na4–+) 11...Bb4 (11...Bc5 12.Qd3 Ng4 13.Rg1–+) 12.Nbd2 (12.Nfd2 e5! 13.Qe5 Re8–+) 12...Qa5 (better 12...e5 13.Qe5 Bg4–+) 13.Be2?? (13.cd5 e5! 14.Qd3–+) 13...e5!–+ 14.Ne5 (14.Qe5 Bc3 Double attack (14...Bd2 Deflection; 14...Bc3 Decoy); 14.Ne5 Bd2 Deflection) 14...Nd2 15.Kd1 (15.Qf4 Nc4 16.Kf1 Nb2–+) 15...Nb3 16.Qd3 Na1 (16...Na1 17.Bf3 Qa4 18.Ke2 Nb3 19.cd5 Re8–+) 0–1. Wadtland,Flemming (1820) – Schmidt,Ho DEN (1875), Politiken Cup, Copenhagen DEN, 2010.

7.c4 cd4 8.Bd4 a6 A) 9.Qc2 dc4 10.Bc4 ab5 11.Bb5 Qa5 12.Nc3 Nd5 13.Bc4 Nc6 14.Bd5 ed5=+; B) 9.Nc3 ab5 10.cb5 Ra3 11.Rb1 Nbd7 12.Bd3 Bd6 13.Rb3 Rb3 14.Bf6 Qf6=+; C) 9.ba6 Na6 10.Nc3 Nb4 11.Ne5 Ne4 12.Ne4 de4 13.a3 Na6 14.h3 f6=+; D) 9.Nbd2 ab5 (9...dc4 10.Qa4 Nbd7 11.Bc4 Nc5 12.Bc5 Bc5 13.ba6 ba6 14.Qc6 Qe7=) 10.cb5 Nbd7 11.Be2 Bd6 12.0–0 e5 13.Bb2 Qe7 14.a4 Nc5=+; E) 9.Be2 Bb4 (9...dc4; 9...ab5; 9...Ne4; 9...Nbd7) 10.Bc3 Bc3 11.Nc3 Qa5 12.Rc1 ab5 13.cb5 Ne4 14.Qb3 Nd7=+; F) 9.cd5 Nd5 (9...Bb4) 10.e4 Bb4 11.Nbd2 Nc3 12.Qc2 Nb5 13.Bb5 ab5 14.Qb2 Ba3=+.

7.dc5 Ne4 =.

7.bc6 bc6 8.Bd3 Ba6 (8...c5 9.dc5 Nc6 10.0–0=+) 9.0–0= Bd3 10.Qd3 Nbd7 11.Nbd2 c5 12.c4 Rb8 13.Bc3 (13.Rab1 Qc7=) 13...Qc8 14.Rfb1 (14.cd5 ed5 15.Rab1 c4=) 14...Qa6=+ 15.dc5 Bc5 (15...Nc5 16.Qc2=+) 16.Rb8 (16.Ne5 Ne5 17.Be5 Rb1 18.Rb1 A) 18...Qa2?? 19.Ra1 dc4 20.Nc4 (20.Ra2? cd3 21.Rb2 Rd8–+) 20...Qa1 21.Ba1+–; B) 18...Nd7=) 16...Rb8 17.Bf6 (17.Ne5 Rc8=+) 17...gf6 (17...Nf6!? 18.Ne5 Bd6=) 18.e4= Nb6 19.ed5 Nd5?? (19...ed5 20.Re1 Rc8 21.Nd4 Nc4 22.Nf5=) 20.Nb3?? (20.Ne1 Rb2 21.Ne4 Nf4 22.Qd8 Bf8 23.Nf6 Kg7+–) 20...Bf8? 21.Qf1?? Nb4 22.c5 Qf1 23.Kf1 Na2 24.c6 Rb3 25.Ra2= Rc3 26.Ra6? Bc5–+ 27.h3 Bb6 28.Ke2 Rc6 29.Ne1 Rc5 30.f3 Ra5 31.Ra5 Ba5 32.Nd3 Kf8 33.Kd1 Ke7 34.Kc2 Kd6 35.Nf4 Bd8 36.Kd3 Kc5 37.Kc3 a5 38.Nd3 Kb5 39.Kb3 Be7 40.Nb2 f5 41.Na4 Bf6 42.Ka3 f4 43.Kb3 Bd4 44.Ka3 e5 45.Kb3 f5 46.Nc3 Bc3 47.Kc3 a4 48.Kb2 Kb4 49.Ka2 e4 50.fe4 fe4 51.Kb2 a3 52.Ka2 e3 53.Kb1 e2 54.Ka2 e1Q 55.g3 Qd2 56.Kb1 Qb2 0–1. Rogall,J – Fuchs,H, Dortmund op, 1988.

7.bc6 Nc6 8.c4 Bb4 9.Nbd2 (9.Bc3 Ba5=) 9...Bd7 10.a3 Be7 (10...Ba5 11.Rc1=) 11.cd5 (11.Bd3 Rc8=) 11...Nd5 (11...ed5 12.Bd3=) 12.Bc4 (12.Bd3 Rc8=) 12...Nf6 (12...a6 13.Bd3=) 13.0–0 a6 14.a4 Na5 (14...Rb8 15.Ba3=) 15.Ne5 (15.Bd3 Rc8=) 15...Nc4 16.Ndc4 Rc8 (16...b5 17.ab5 ab5 18.Ra8 Qa8 19.Nb6=) 17.Ba3 Ba3 18.Ra3 Be8 (18...b5 19.Nd6 b4 20.Nc8 ba3 21.Nd7 Nd7 22.Nd6=) 19.f4 (19.Qb1 b5 20.ab5 Bb5=) 19...Nd5 20.Qb3 (20.e4 f6 21.ed5 fe5 22.Ne5 Qd5=) 20...Qc7 (better is 20...b5 21.Nd2 b4–+ (21...ba4?! 22.Qb2=+)) 21.g3 (21.e4 b5 22.ab5 ab5 23.Nd2 Nf4 24.Qe3= (< 24.Rf4 Qc1 25.Rf1 Qd2–/+)) 21…f6–/+ 0–1. gtate (1815) – kostaspetidis (2015), net–chess.com, 2002.

7.bc6 Nc6=+ 8.Bd3 Qb6 9.Qc1 Nb4 10.0–0 Nd3 11.cd3 Bd7 12.Nc3 (12.Ba3 Rfc8 13.Qd2 Bd8=+) 12...Rac8 (12...Rfc8 13.Ne5–/+) 13.Qd2 Qa5 (13...Rc7 14.Rac1=+) 14.Rfc1 Rfd8 15.Rc2 Ba4 16.Na4 Qa4 17.Rac1 Rc2 18.Qc2 Qc2 (18...Qa2? 19.Ra1 Qa1 20.Ba1+–) 19.Rc2 Bd6 20.Nd2 (20.Ne5 Kf8=) 20...Kf8 (20...b5 21.Nb3=+) 21.Kf1 (21.e4 de4 22.de4 Bf4=) 21...Ke8 (< 21...Bh2 22.g3+/–) 22.Nb3 (22.f4 Ng4 23.Ke2 Nh2–/+) 22...b6 (22...Bh2 23.g3 Ng4 24.e4=) 23.Ke2 Kd7 24.a4 (24.f4 a6=+) 24...Rc8 (24...Bh2 25.Ba3 Bb8 26.f4–/+) 25.Rc8=+ Kc8 26.h3 (26.f4 Kd7=+) 26...Kb7 27.Kd2 Kc6–/+ 28.Bc3 Ne8 29.e4 Nc7 30.Ke3 Na6 31.f4= Nb4 32.e5 Be7=+ 33.g4 Na2 34.Kd2 Nc3 35.Kc3 a6 36.Nc1 b5 37.Kb3 Kb6 38.Ne2 ba4 39.Ka4 Bh4 40.f5 Bg5 41.Ng1 Be3 42.Nf3 g6 43.f6= a5 44.h4 h6 45.h5 g5 46.Kb3 Kb5 47.Kc3 a4 48.Ne1 Ka5 49.Nf3 Kb5 50.Ne1 a3 51.Kb3 Bc1?? 52.Nc2+/– ½–½. Lorenc,T – Cmiko,J, 2.CLV LokoPard–Vrsov, 1997.

7.bc6 Nc6 8.Bd3 Qb6 9.Qc1 Nb4 10.Ne5 Nd3 (10...Ne8 11.Nf3–/+) 11.Nd3 Bd7 12.0–0 Rac8 (12...Rfc8 13.Ba3 Bd8 14.Nd2–/+) 13.Ba3 Ba3 (13...Bd6 14.f3–/+) 14.Na3=+ Ne4 15.Ne5 (15.f3 Nc3 16.Re1 f6–/+) 15...Ba4 16.Rb1 (16.f3 Nc3 17.Re1 f6–/+) 16...Qc7 (better is 16...Qa6–+) 17.f3? (better is 17.c4 f6 18.f3 fe5 19.fe4 ed4 20.ed4 Rf1 21.Qf1 dc4 22.Rb4–+) 17...Nc3–+ 18.Rf2 (18.Re1 Nb1 19.Qb1 Qc3–+) 18...Nb1 19.Nb1 (19.Qb1 Qc3 20.Qc1–+) 19...Bc2 20.Na3 (20.Rd2 f6 21.Na3 Bf5 (< 21...fe5 22.Rc2 Qb8 23.de5–+) 22.Qc7 Rc7–+) 20...Ba4 21.Qc7 Rc7 22.Rb2 Rfc8 (better is 22...f6 23.Nd3 Rc3 24.Nc5 Ra3 25.Rb7 Ra2 26.Ra7–+) 23.Kf2 b6 24.Kg3 Rc3 25.Nb5 Bb5 26.Rb5 Re3 27.a4 Ra3 28.Rb4 Ra2 29.Ng4 Rcc2 30.Ne3 Re2 31.Nf1 Rg2 32.Kh3 Rgf2 33.Ng3 f5 34.f4 Rh2 0–1. Chicco,Gianfranco – Leoncini,Mario, Siena, 1992.

7.bc6 Nc6=+ 8.Bd3 Qb6 9.Bc3 Nb4 =+.

6.d4 c6

7.a4 a6 8.bc6 Nc6 9.Nbd2 Bd7 10.Be2 Rc8 11.0–0 h6 12.c4 dc4 13.Nc4 Nd5 14.Qb3 b5 15.ab5 ab5 16.Nce5 (16.Qb5? Nd4 17.Nd4 Bb5 18.Nb5 Bf6–+) 16...b4 17.Nd7 Qd7 18.Bb5 Qd8 19.Rfc1 Na5 20.Qa4 Ra8 21.Ne5 Nb6 22.Qd1 Qd5 23.Qe2 Nb3 24.Ra8 Qa8 25.Rc6 Qa2 26.g3 Na4 27.Ba4 Qa4 28.Ra6 Qe8? (better is 28...Na5+/–) 29.Qd3+– 1–0. Matveenko,Yury (2145) – Suharukova,Anastasia (2050), Voronezh op–B, 2008.

7.a4 c5 8.dc5 Bc5 9.Bd3 a6 (9...Nbd7 10.Nbd2=) 10.c4 (10.0–0 Qe7=) 10...dc4 11.Bc4 ab5 (11...Qd1 12.Kd1 Rd8 13.Ke2+=) 12.Bb5 (12.Qd8 Rd8 13.ab5 Ra1 14.Ba1 Ne4=) 12...Qd1 13.Kd1 Rd8 14.Ke2 Na6 (14...Ne4 15.Rc1 Bd6 16.Ba3+=) 15.Nc3 Bd7 16.Rhd1 Bb5 17.Nb5 b6 (17...Ne4 18.Rd8 Rd8 19.Rc1+=) 18.Bc3 (18.Bf6 gf6 19.Rd8 Rd8+=) 18...Nd5 (18...Ne4 19.Rd8 Rd8 20.Rc1=) 19.Bd4 (19.Be5 f6 20.Bg3 e5=) 19...Kf8 (19...Bd4 20.Rd4 Nc5 21.Ra3=) 20.Ne5 (20.Be5 f6 21.Bg3 e5=) 20...Bd4 21.Rd4 Nab4 (21...Nc5 22.Ra3=) 22.Rc4 (22.Rh4=) 22...Rac8 (better is 22...f6!? 23.Nf3 e5=) 23.e4 (23.Nd7 Ke7 24.Nb6 Nb6 25.Rb4 Nd5+/–) 23...Rc4+= (24.Nc4 Rc8+=). gtate (1700) – nhathuy (1935), net–chess.com, 2002.

7.a4 Ne4 8.Bd3 Qa5 (8...a6 9.Nbd2 ab5 10.ab5 Ra1 11.Ba1=) 9.c3 cb5 (9...Nd7 10.0–0=) 10.ab5+= Qc7 11.0–0 (11.Qc2 Bd7+=) 11...Bd7 (11...Nd6 12.Nbd2=) 12.c4 dc4? (better 12...Nd6 13.cd5 Bb5 14.Bb5 Nb5+=) 13.Be4+– Bb5 (13...f5 14.Bc2 Bb5 15.Nc3+–) 14.d5 (14.Nc3 Bc6+–) 14...Bd6 (14...c3!? 15.Nc3 Bf1 16.Qf1 f5+–) 15.de6 fe6 16.Qc2 (16.Ba3 Ba3 17.Na3 Bc6 18.Bc6 Qc6+–) 16...h6 (16...c3 17.Bh7 Kh8 18.Nc3 Bf1 19.Rf1+–) 17.Na3 c3?? (17...Ba6+–) 18.Nb5 Qc4 (18...Qe7 19.Bc3 Nc6+–) 19.Nd6 (19.Nd6 Qc7 20.Bb7+–) 1–0. GuestBVRD – guestPlayer, freechess.org, 2018.

7.Nc3 a6 8.ba6 b5 9.a4 b4 10.Na2 Na6 11.Bd3 Nc7 12.Nc1 c5 13.dc5 Ne4 14.c6 Qe8 15.Be4 de4 16.Ne5 Nd5 17.Qh5 Nc3 18.Bc3 bc3 19.Ne2 Ra5–/+ 20.f4 Bd6?? 21.Nd4= Ba6 22.Qh4 Qd8 23.Qd8+/– Rd8 24.Nb3 Rd5 25.Nd7 Be7 26.Rb1 Rd6 27.Nd4 Rd5 28.g4 Bh4+= 29.Kd1 Bf2 30.c7 R5d7 31.cd8Q Rd8 32.Re1 Be1 33.Ke1+= Rc8 34.Rb3 Kf8 35.Nb5 Bb5 36.ab5 Rb8 37.b6 Ke7 38.h4 Kd6 39.Ke2 f5 40.g5 h6 41.h5 hg5 42.fg5 Rb7 43.h6 gh6 44.gh6 Kd5 45.h7! Rh7 46.b7 Rh2 47.Ke1 Rh1 48.Kf2 Rh2 49.Kg3 Rh8 50.b8Q Rb8 51.Rb8 e5 52.Rc8 Kd6 53.Rc3 Ke6 54.Rc6 Ke7 55.c4 Kf7 56.c5 Ke7 57.Rd6 Kf7 58.c6 f4 59.Kf2 Ke7 60.Rd2 Ke6 61.c7 Kf5 62.c8Q Kf6 63.Rd6 Kg5 64.Qh8 fe3 65.Kg3 e2 66.Qe5 1–0. Bestia02c – Ozwald043, computer chess game, 2000.

7.c4 a6 8.ba6 b6 9.Ba3 =+.

7.c4 Nbd7 8.bc6 bc6 9.Bd3 (9.Nc3 Ba6=) 9...Ba6 (9...Rb8 10.Qc2=+) 10.Nbd2= Rb8 11.Bc3 (11.Rb1 dc4 12.Nc4 Bc4 13.Bc4 Bb4 14.Kf1 Bd6=) 11...Qc7 (11...Nb6 12.Ne5 Nc4 13.Nc6+/– (< 13.Nec4 dc4 14.Bc4 Bc4 15.Nc4 Qd5–/+; 13.Ndc4?! Bc4 14.Nc6 Qc7 15.Nb8 Rb8+/–)) 12.0–0 (12.Qa4 Rb6=) 12...Rb7 (12...c5 13.Rc1=) 13.Qc2 (13.Qa4 Rb6+=) 13...h6 (13...Rfb8 14.Rfb1=) 14.Rfb1 Rfb8 15.Bf1 (15.Rb7 Rb7 16.Qa4 Nb8+=) 15...Qc8 (15...Rb1 16.Rb1 Rb1 17.Qb1=) 16.cd5 (16.Rb7 A) < 16...Rb7 17.cd5 Bf1 18.de6+/– (< 18.Nf1 cd5 19.N1d2 Rc7=+); B) < 16...Qb7 17.Rb1 Qc7 18.Rb8 Qb8 19.Qa4+=; C) 16...Bb7 17.Bd3 c5+=) 16...Rb1 (16...Bf1 17.Rb7 Qb7 18.de6+/– (18.Rf1?! cd5 19.Rb1 Qc7=)) 17.Rb1= cd5 18.Rb8 Nb8 19.Nb3?? (19.Ba6 Na6 20.Ne5 Bb4–/+) 19...Bf1=+ 20.Kf1 Qc4 21.Ke1 (21.Kg1 Ne4–+) 21...Bb4 22.Kd2 (22.Qe2 Bc3 23.Kf1–+) 22...Ne4 (23.Kd1 Nc3 24.Kc1 Qf1 25.Ne1 Qe1 26.Qd1 Qd1 27.Kb2 Qb1) 0–1. Janvari,Viktor – Kiss,Emese, Papp Bela mem, 1995.

6.d4 Nbd7

7.c4 dc4 8.Bc4 Nb6 9.Be2 Nbd5 (9...Ne4 10.Nfd2 Bb4 11.Qc2=) 10.0–0 (10.Nfd2 Bb4=) 10...Bd6 (10...Nb6 11.Ng5+=) 11.Ne5 (11.Nfd2!?+=) 11...Be5= 12.de5 White has the pair of bishops. 12...Nd7 (better is 12...Ne4=) 13.f4?? allows the opponent back into the game (better is 13.Ba3 would save the game 13...Re8 14.Qd4+=) 13...Ne3–+ 14.Qc1 Nf1 15.Bf1 Nb6 (15...c5 might be the shorter path 16.Qc2–+) 16.Qc2 (16.Nd2 h6–+) 16...Nd5 (16...h6 keeps an even firmer grip 17.g3–+) 17.Qe4 (17.Ba3 is no salvation 17...Nf4 18.Qe4 Qh4–+) 17...Qh4 (17...c5 makes it even easier for Black 18.Bd3 g6 19.Be2–+) 18.g3 Qh5 (18...Qe7 19.Nd2=) 19.Be2 (19.Ba3 does not solve anything 19...Rd8–+) 19...Qg6 20.Qf3 (20.Qg6 doesn't get the bull off the ice 20...hg6 21.Nd2–+) 20...Qc2 (20...Rd8 keeps an even firmer grip 21.Nd2–+) 21.Bd4 c5 22.bc6 bc6 23.Na3 Qa4 24.Nc4?? Ba6 25.Bc5?? Bc4 26.Bc4?? Qc4–+ (26...Qc4 27.Qf2 Qc3–+) 0–1. Satka,Martin – Ewald,Horst (1660), Brandenburg Seniors op, 2002.

7.c4 c6 8.a4 Ne4 9.c5 (9.Nfd2 Ndf6=) 9...f5 (9...e5 10.de5 Qa5 11.Nfd2 Bc5 12.Bd3 Nd2 13.Nd2+=) 10.Bd3 Qe8 (10...Qa5 11.Nfd2+=) 11.0–0 Qh5 12.Be2 Qh6 13.Nbd2 (13.Qc2 Nb8=) 13...g5 (13...e5 14.Qc1=) 14.Ne1 Ndf6 15.f3 Secures g4 15...Nd2 16.Qd2 Bd8 17.Nd3 Bd7 18.Ne5 Bc7 19.Bd3 Be8 20.Qd1 (20.Rab1 Kh8=) 20...Nd7 (20...Rc8 21.Rf2=) 21.Rc1 (21.f4 Be5 22.fe5 Nb8=) 21...Ne5 22.de5 White has new doubled pawns: e3+e5 22...Rd8 23.Bd4 A sound move 23...Rd7 (23...Ba5 24.Rc2=) 24.f4 Rg7 (24...Ba5 25.bc6 bc6 26.Ba6=) 25.Rc2 (25.b6 ab6 26.cb6 Bd8=) 25...Bd8 26.g3 Qg6 27.Rff2 h5 28.Rg2 Kh8 29.Kf1 Rfg8 30.Qd2 Qh7 31.Qe1 Rg6 32.Rcf2 Rh6 33.Qd2 Rg7 34.Qc3 Kg8 35.Ke2 h4 36.g4 h3 37.Rg3 gf4 38.ef4? Bh4–/+ 39.Rff3?? Bg3–+ 40.Rg3 Bg6 41.Qa5+= Kh8 42.Qd8 Qg8 43.Qg5 Kh7 44.gf5 Bf5 45.Bf5+= ef5 46.Qf5 Rgg6 47.Qd7 Qg7 48.e6?? Re6–+ 49.Be5 Qd7 0–1. Ilia,Naim (1965) – Schmidt,Peter2 (2085), Berlin Eckbauer op 4th, 2001.

7.Bd3 b6 8.0–0= a5 (8...a6 9.a4=) 9.c4 (9.Nbd2 Bb7=) 9...Bb7 10.Nbd2 Bb4 (10...dc4 11.Nc4 c6 12.bc6 Bc6 13.Nce5 Ne5 14.de5=) 11.Qc2 (11.cd5 Nd5 12.Qc2 f5+=) 11...h6 (11...c6 12.bc6 Bc6 13.cd5 Bd5 14.e4+=) 12.a3 (12.cd5 Nd5 13.a3 Bd2 14.Qd2 N5f6+–) 12...Bd2 13.Nd2 Ne4? (better 13...c5!?+=) 14.Ne4+– de4 15.Be4 Be4 16.Qe4 Nf6 (16...Qf6 17.Qg4+–) 17.Qf3 Qd7 (17...Nh7 18.e4+–) 18.d5 ed5 (18...Nh7+–) 19.Bf6 gf6 20.Rad1 (20.Rfd1 Rfd8+–) 20...Rad8 (20...Rfd8 21.Rd5 Qe7 22.Rfd1+–) 21.Rd5 (21.Qd5?! Qg4 22.Qd8 Rd8 23.Rd8 Kg7+–) 21...Qe6 22.Qg3 Kh7 23.Qc7 Rd5 24.cd5 Qd5 25.Qb6 Rd8 (25...a4+–) 26.Qa5 Qd1 (26...f5 27.Qc7+–) 27.b6 (27.Qc7 Rd7 28.Qc4 Qh5+–) 27...Qb3 28.a4 Rd1 (28...Kg7 29.Qa6+–) 29.Qf5 Kg7 (29...Kh8 30.Qf6 Kg8+–) 30.Qg4 Kh7 31.Qd1 Qb6 32.Qb1 Kg7 33.Qb6 (33.Qb6 Kg6 34.Qb8 h5 35.Qg8 Kh6 36.h4 f5 37.Rc1 f6 38.Rc7 f4 39.Qg7) 1–0. Anonymous – Anonymous, lichess.org, 2020.

6.Be2 a6

7.0–0 ab5 8.Bb5 c6 9.Be2 Nbd7 10.d4 (10.c4 dc4 11.Bc4 Bd6+=) 10...b6 (10...b5 11.Nbd2+=) 11.Nbd2 Ba6 12.Ba6 (12.c4 Bd6=) 12...Ra6+= 13.c4 c5 (13...Qc7 14.Qc2+=) 14.dc5 (14.cd5 ed5 15.dc5 bc5=) 14...bc5 (14...Nc5 15.Qb1=) 15.cd5 (15.Qc2 Qa8=) 15...Nd5 (15...ed5 16.Qc2=) 16.a4 (16.e4 Nf4=) 16...Bf6 (16...Qa8 17.e4 N5b6 18.a5 Ra5 19.Qc2 Ra1 20.Ra1+=) 17.Bf6= N7f6 (17...Qf6 18.Qc2=) 18.Qc2 Qe7 19.Rfc1 Rc6 (19...Rc8 20.a5=) 20.a5 (20.Ne5 Rc7+=) 20...Nb4 21.Qc4 White plans a6 21...Rfc8 (21...Rd8 22.e4=) 22.a6 (22.e4!?+=) 22...Ra8 (22...Qa7 23.Ra5+=) 23.Ne5 (23.Nb3 Raa6 24.Ra6 Na6+= (24...Ra6?! 25.Nc5 Rb6 26.e4+=)) 23...Rca6+= (23...Raa6? 24.Nc6 Rc6 25.Ra8 Ne8 26.Nb3+–) 24.Ra6 Ra6 (24...Na6 25.Ra1 Nc7 26.Rc1=) 25.Qc5 (25.Nb3 Ra3=) 25...Qc5 26.Rc5 Ra1 27.Nf1 Ra8 (27...Ne8 28.Rb5 Nd5 29.Rb8=) 28.f3 (28.Rb5 Nbd5+=) 28...g6 (28...Nfd5 29.e4 Nf4 30.g3=) 29.g4 (29.Rb5 Nbd5+=) 29...Nbd5 30.e4 (30.g5 Nh5=) 30...Nf4 31.Rc7 Rf8 (31...Ra2 32.Ne3=) 32.Ne3 (32.g5 N6h5+=) 32...g5 (32...h5+=) 33.Nd7 (33.N3c4!?+=) 33...Nd7= 34.Rd7 h5 (34...Ra8 35.Nc4=) 35.gh5 Nh5 36.Ng4 Kg7 37.Kf2 Nf4 ½–½. mic (2115) – rhand (2300), net–chess.com, 2008.

7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0–0 9.Be2).

7.a4 c5 =.

7.a4 Bd7 8.0–0 ab5 9.ab5 Ra1 10.Ba1 Ne4 =.

7.a4 Nbd7 8.0–0 (8.Nc3 Nc5=) 8...ab5+= 9.ab5 Ra1 10.Ba1 c5 11.c4 (11.bc6 bc6 12.c4 Qa5=) 11...Nb6 (11...Qc7 12.Qc2+=) 12.d3= Qc7 13.Nbd2 Nbd7 (13...Bd7 14.Qc2=) 14.Bb2 (14.Qb3 b6=) 14...b6 15.Qc2 Bb7 16.Ra1 Ra8 17.Ra8 Ba8 18.cd5 (18.g3 Bb7=) 18...Nd5 (18...ed5 19.e4=) 19.h3 ½–½. Boehnke,Hartmut (2095) – Hausmann,Heiko (1875), remoteschach.de, 2004.

7.ba6 Na6 8.0–0 Nb4 9.a3 Nc6 10.d3 b6 11.Nbd2 Bb7 12.c4 dc4 13.Nc4 Qd5 14.e4 Qh5 15.Qc1 Rfc8 16.Qe3 Ng4 17.Qf4 Nf6 18.Rac1 Qg4 19.Qe3 Bc5 20.d4 Be7 21.Ncd2 Nd8 22.Ne5 Qh4 23.Bf3 Kh8 24.g3 Qh3 25.Bg2 Qh5 26.Rc2 Ng4 27.Ng4 Qg4 28.Rfc1 c5 29.Nc4 Ra6 30.Ne5 Qg5 31.f4 Qh5 32.Nd3 c4 33.Bf3 Qa5 34.Rc4 Rc4 35.Rc4 Ba3 36.Ba3 Qa3 37.Rc1 b5 38.d5 Ra8 39.Qc5 h6 40.Rd1 ed5 41.ed5 Qb3 42.Qf8 Kh7 43.Be4 g6 44.Nf2 Qa3 45.Qa3 Ra3 46.d6 Be4 47.Ne4 f5 48.Nf2 Kg7 49.Nd3 g5 50.d7 Ra4 51.fg5 hg5 52.Nc5 Rc4 53.Nb3 Kf6 54.Rd5 b4 55.Nd4 f4 56.Kg2 Ke7 57.g4 Kf6 58.Kf2 Kf7 59.Ke2 Ke7 60.Kd3 Rc3 61.Ke4 Rc4 62.Kd3 Rc1 63.Kd2 Rc7 64.Re5 Kf6 65.Rd5 Ra7 66.Kd3 Rc7 67.Ke4 Rc4 68.h4 gh4 69.Kf4 b3 70.g5 Ke7 71.Ke3 h3 72.g6 h2 73.g7 Kf7 74.Rg5 Kg8 75.Rh5 Rd4! 76.Kd4 b2 77.Rh8 Kg7 78.Rd8 b1Q 79.Rg8 Kf7 80.d8Q Qb4 81.Kd3 Qb5 82.Kd4 Qb2?? 83.Kd3 Qb3 84.Kd2 Qa2 85.Kc3 Qa1 86.Kd2 Qa2 87.Kc3 Qa3 88.Kd2 Qa2 ½–½. GLChess211 – ZChess20, computer chess game, 2000.

7.ba6 Na6 8.0–0 c5 9.c4 Nb4 10.a3 Nc6 11.d4 b6 12.dc5 bc5 13.Nbd2 Ba6 14.cd5 ed5 15.Ne5 Ne5 (15...Ne5 16.Be5 Be2 17.Qe2 Bd6 18.Bd6 Qd6+=). giving up claim a win – Subedei, ChessWorld.net, 2005. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 e6 4.b5 Be7 5.e3 0–0 6.Be2 a6)

7.ba6 Na6 8.Nc3 Nc5 9.0–0 Bd7 10.Ne5=+ Bd6 11.Nd7 Qd7 12.Nb5 Nfe4 13.f3= Nf6 14.Bf6 gf6 15.d4 Na4 16.Qd2 Nb6 17.e4 Qc6 18.Nd6 Qd6 19.Rfd1 de4 20.fe4 e5 21.c3 ed4 22.cd4 Rfe8 23.Qc2 Qf4 24.Bf3 Ra4 25.Qc1 Qd6 26.Qc5 Qc5 27.dc5+= Nc4 28.Rd7 Rc8= 29.Rd4 Nb2 30.Ra4 Na4 31.Rc1 Ra8 32.c6 b6=+ 33.Bd1 Nc5 34.Bb3 Ne4 35.Rd1 Nc5 36.g3 Ra3 37.Bd5 Kg7–/+ 38.Rd4 f5 39.Rf4 Kg6 40.g4 fg4 41.Rg4 Kf6 42.Rh4 Rd3 43.Bc4 Rc3 44.Bd5 Nd3 45.Bb3 h5 46.Kg2 Rc6 47.Kg3 Kg6 48.Re4 f5 49.Re8 Rd6 50.Rg8 Kh6 51.Rh8 Kg5 52.h4 Kg6 53.Rg8 Kf6 54.Rf8 Ke5 55.Re8 Kd4 56.Rh8 f4 57.Kg2 Rf6 58.Rh5 f3 59.Kg1 f2 60.Kf1 Rc6 61.Rd5 Ke4 62.Rd3 Kd3 63.Kf2 Kd4 64.Kg3 Rc1 65.h5 c6 66.Kf4–/+ Rf1 67.Kg5 Rg1 68.Kf6 c5?? 69.Be6?? c4–+ 70.h6 Rh1 71.Kg7 c3 72.Bf5 Rg1 73.Kf6? Rf1 74.h7 c2–/+ 75.h8Q c1Q 76.Qd8 Kc5 77.Qc7 Kb5 78.Qe5 Kb4 79.Qe7 Qc5 80.Qe4 Ka5 81.Qe6 b5 82.Kg5?? Rf2 83.Kg6 Rg2 84.Kh5 Qd4 85.Bg4 Qc4 86.Bf5 Ra2 87.Qd6 Qf7 88.Kg5 Qg7 89.Kh4 Qh8 90.Kg4 Ra4 91.Kg5 Qg7 92.Bg6 Qd4 93.Qc7 Kb4 94.Qc6 Qe3 95.Kf6 Qc3 96.Qc3 Kc3 (97.Ke5 b4–+) 0–1. Psion – Psion, 4 Min/Zug, 1988.

7.Nc3 ab5=+ 8.Nb5 c6 9.Nbd4 =+.

7.Nc3 ab5=+ 8.Nb5 Re8 9.Be5!? Na6 10.0–0 =.

6.Be2 b6

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

7.0–0 a6 8.a4 c5 9.ba6 Ba6 10.d3 =.

7.0–0 a6 8.a4 c6 9.Na3 =.

7.0–0 a6 8.a4 Nbd7 9.d3 (9.Nd4 Bb7=) 9...Bb7 (9...Bd6 10.Nd4=) 10.Nbd2 (10.c4 dc4 11.dc4 Nc5=) 10...Nc5 (10...c5 11.c4=) 11.c4 (11.d4 Nce4=) 11...Re8 (11...dc4 12.dc4 Bd6 13.Nb3=) 12.Ne5+= Ncd7 (12...ab5 13.ab5 Ra1 14.Ba1+=) 13.Ndf3 (13.f4 Bc5 14.d4 Be7+=) 13...Bf8 (13...dc4 14.Nc4 ab5 15.ab5 Ra1 16.Qa1=) 14.Qc2 (14.cd5 ed5 15.Qc2 Bd6+=) 14...Nc5 (14...Ne5 15.Ne5 Bd6 16.Rfc1+=) 15.Rfc1 (15.Ng5 dc4 16.dc4+/– (16.Ngf7?! Qd5 17.e4 cd3 18.Bd3 Nfe4=)) 15...Nfd7? (better is 15...dc4!? 16.Nc4 ab5 17.ab5 Ra1 18.Ba1 Bf3 19.Bf6 gf6 20.Bf3 Qd3 (20...Nd3?? 21.Rd1+–) 21.Qd3 Nd3=) 16.Nd7+/– Qd7 17.d4 Ne4 18.cd5 (18.Ne5 Qd8 19.cd5 Bd5+–) 18...Qd5 19.ba6 (better is 19.Qc7!? Qb3 20.Rcb1+– (20.Qb6 Qb2 21.Qb7 Nd6–/+)) 19...Ba6+= 20.Ba6 Ra6 21.Qc7 b5 (21...Rea8 22.Ne5 f6 23.Nc4+=) 22.ab5 (22.Ne5 Re7 23.Qc2 ba4+–) 22...Qb5 (22...Ra1 23.Ba1 Qb5 24.Ne5+/–) 23.Ra6 Qa6 24.Qc2 Qb7 25.Ne1 Nf6 26.Nd3 h6 (26...Rb8 27.f3+/–) 27.f3 Qb5 28.e4 Qh5 (28...Rb8 29.Kh1+/–) 29.Nf4 (29.d5 Be7 30.Qc6 Rd8 31.de6 fe6 32.Qe6 Qf7 33.Qf7 Kf7+–) 29...Qb5 (29...Qg5 30.Qc7+/–) 30.d5 Qb6 31.Kh1 (31.Qf2 Qb8 32.g3 Nd7 33.de6 fe6+/–) 31...ed5 (31...Qe3 32.Nh3+/–) 32.Bf6 (32.Nd5?! Nd5 33.ed5 Qb5=; 32.ed5?! Qe3 33.Qc4 Qd2=) 32...Qf6 33.Nd5 Qe5 34.Qc3 Qg5 35.Qe3?? (better is 35.Rd1+/–) 35...Qd5!–+ 36.ed5 A pinning theme (36.Qc3 Qg5–+) 36...Re3 37.Rd1 Bd6 38.Kg1 Re8 (38...Re2 39.Kf1 Ra2 40.h4–+) 39.g3 (39.Kf2 Rc8–+) 39...Rd8 (39...Re2 40.h3–+) 40.Kg2 (40.Kf2 Ra8–+) 40...Kf8 41.f4 0–1. Meinhardt,Alfred – Schwerdtfeger,Wolfgang, Germany op, 1992.

7.0–0 Bb7 8.a4 c6 9.Ne5 cb5 (9...a6 10.f4=) 10.ab5 a6 (10...Qc7 11.Bd4=) 11.f4 (11.Bd4 Bc5=) 11...ab5 (11...Qc7 12.Nc3=) 12.Ra8 Ba8 13.Bb5 d4 (13...Qc7 14.Ba3=) 14.Bd4+= Qd5 (better 14...Bg2!? 15.Kg2 Qd5 16.Qf3 Qb5+=) 15.Qe2+– Ne4 16.Bb6 Nd6 (16...f6 17.Nf3+–) 17.Nc3 (17.c4 Qb7 18.Bc5 Nb5 19.Be7 Qe7 20.cb5 Rc8+–) 17...Qb7 18.Ra1 Nd7? (better 18...Rc8 19.Ra7 Qb6 20.Ra8 Qc7+–) 19.Nd7 (19.Nd7 Nb5 20.Nf8 (20.Nb5?! Qd7 21.c4 Bb7+–) 20...Nc3 21.dc3 Bf8 22.Bd4+–; 19.Bd7?! Qb6 20.Qa6 Qa6 21.Ra6 Bb7+–) 1–0. Anonymous – Anonymous, lichess.org, 2020.

7.0–0 Bb7 8.Nd4 Nbd7 9.Bf3 (9.c4 dc4 10.Bc4 Nc5=) 9...e5 (9...a6 10.Nc6 Bc6 11.bc6+=) 10.Nb3 (10.Nc6 Bc6 11.bc6 e4 12.cd7 ef3 13.Qf3 c6=) 10...e4 (10...a6 11.ba6 Ba6 12.d3–/+) 11.Be2+= Re8 (11...a6 12.ba6 Ba6 13.Ba6 Ra6 14.Qe2+=) 12.c4 (12.Nc3!?+=) 12...dc4–/+ 13.Bc4 h6 (13...Bd6 14.Nc3–/+) 14.Nc3 (14.d4 a6 15.a4=) 14...Rc8 (14...Ne5 15.Be2–/+) 15.Ne2 (15.d4!?=) 15...Bd6+= 16.g3 (16.Rc1 Ne5+=) 16...Qe7 (16...Ne5 17.Be5 Re5 18.Nbd4+=) 17.Nbd4 (better is 17.Rc1+=) 17...Bc5?? (17...Ne5 18.Qb3–/+) 18.a4?? (18.Nf5 Qf8 19.Nf4 Ne5+/–) 18...Bd5?? 19.Bd5+/– Bd4 20.Bf7! Qf7 21.Bd4 c5 22.bc6! Rc6 23.f3 ef3 24.Rf3 Qh5 25.Nf4 Qg4 26.h3 Qg5 27.Kg2 Ne4 28.d3 Nef6 29.e4 Ne5 30.Rf2 Rd6 31.Be5 Re5 32.h4 Qg4 33.Qg4 Ng4+/– 34.Rd2 Ne3?? 35.Kf3+– Nc4 36.Rdd1 Nb2 37.Rd2 Nd3?? 38.Nd3 Ree6 39.Rad1 Rf6 40.Ke3 Rg6 41.Kf4 Rdf6 42.Ke5 Rg3 43.Nf4 Rg4 44.Rf2 Rh4 45.Ng2?? Rh5?? 46.Rf5+– Rff5 47.Kd4?? Rf2–+ 48.Ne3 Rh4 49.Nf5 Rhf4 50.Ke5 Kh7 51.Rd7 a6 52.Ng7?? Rf7–+ 53.Rf7 Rf7 54.Ne6 Kg6 55.Nf4 Kg7 56.Ne6 Kg6 (56...Kg6 57.Nf4 Rf4 58.Kf4 Kf6–+) 0–1. valpa – Chopz8va, playchess.de, 2002.

7.0–0 Bb7 8.Ne1 Nbd7 9.Bf3 h6 10.c4 Nc5 11.Nc3 (11.cd5 ed5 12.Nc3 a6=) 11...Re8 (11...dc4!? 12.Bb7 Nb7–/+) 12.cd5 ed5 13.Nc2 Nd3 14.Rb1 Nb2 15.Rb2 c5 (15...a6!?+=) 16.bc6= Bc6 17.Nb4 Bb4 18.Rb4 Ne4 19.Ne4 (19.Qc2 Rc8=) 19...de4+= 20.Be2 a5 21.Rd4 Qc7 22.Qb3 Rad8 23.Rd8 Qd8 24.Rd1 Qb8 25.Qc4 Qb7 26.Rc1 Bd5 27.Qd4 b5 (worse is 27...Ba2 28.Qa4 Rc8 29.Rc8 Qc8 30.Qa2 Qc1 31.Bf1+–) 28.Rc5 Ba2 29.Rb5 Qa8 30.Re5 (better is 30.Qa4 Be6 31.Ra5+/–) 30...Re5+= 31.Qe5 a4 32.g3 (32.Bb5!?+=) 32...Be6–/+ 33.Qc3 (better is 33.d3–/+) 33...a3–+ 34.Bc4 (34.Qa1 a2 35.Bd1 Qd8–+) 34...a2 (34...Bc4 35.Kg2 a2 36.Qc4 a1Q–+) 35.Qa1 (35.Ba2 Qa2 36.Kg2–+) 35...Bc4 36.Kg2 Qb8 (36...Qb8 37.Qc3 Qb1 38.Qc4 a1Q 39.Qc8 Kh7 40.Qf5 g6 41.Qf7 Qg7–+) 0–1. valpa – Chopz8va, playchess.de, 2003.

7.0–0 c5 8.a4 (8.Na3 a6=) 8...Bb7 (8...Nbd7 9.d3=) 9.d4 (9.Nc3 Bd6=) 9...Nbd7 10.Nbd2 cd4 11.ed4 (11.Nd4 Qc7=) 11...Qc7 (11...a6 12.Bd3=) 12.h3 (12.Bd3 a6=) 12...Rac8 Attacks the backward pawn on c2 13.c4 (13.Bd3 Nh5=) 13...dc4+= 14.Bc4 (14.Rc1 c3 15.Bc3 Qf4+=) 14...Nd5 (14...Rfd8 15.Qe2+=) 15.Qb3 (15.Ne5 Nf4 16.Rc1 Bg2+=) 15...h6 (15...Rfd8 16.Rfc1 Qf4 17.a5+=) 16.Ba3 Ba3 17.Ra3 (17.Qa3 Rfd8+=) 17...N5f6 (17...Rfd8 18.Rc1+=) 18.Re1 (18.Rfa1 Bd5 19.Bd5 Nd5=) 18...Bd5 (18...Qd6 19.Rc1+=) 19.Ne5 (19.Rc1 Rfd8=) 19...Bc4 (19...Ne5 20.Bd5 Ng6 21.Be4 Ne4 22.Re4 Qc1 23.Nf1+=) 20.Ndc4 Nd5 (20...Ne5 21.Ne5 Qd6 22.Qb2=) 21.Nc6 (21.Rc1 Ne5 22.de5 f6=) 21...Nb8 22.N4e5 Rfe8 (22...Nc6 23.Nc6 a6 24.Ra2=) 23.Nb8 Qb8 24.Nc6 (24.Qf3 Qb7=) 24...Qb7 (24...Qd6 25.Rc1= (worse is 25.Na7 Rc3 26.Qd5 Qd5 27.Rc3 Qd4–/+)) 25.Qf3 a6 26.Ne5 (26.Nb4 a5 27.Nd5 Qd5 28.Qd5 ed5 29.Re8 Re8=) 26...ab5 (26...Rc7 27.Qh5=) 27.ab5 Qe7 (27...Ra8 28.Ra6=) 28.Nc6 White gets in control 28...Qf8 (28...Qg5 29.Ra7 Rc7 30.Rea1=) 29.Ra7 Ra8 30.Rea1 Ra7 31.Ra7 Kh8? (better is 31...Rc8=) 32.Rf7 Qg8 33.Ne5 Nf6 (33...Qh7 34.Qh5 Rb8 35.Qg4 Qb1 36.Kh2+–) 34.Qd3 (34.Ng6 Kh7 35.Qf6+–) 34...Qh7 35.Ng6 Kg8 36.Re7 Re7 (36...Qg6 37.Qg6 Re7 38.Qg3+–) 37.Ne7 Kf7 38.Qh7 Nh7 39.Nc8 Ke8 40.Nb6 Nf6 (40...Kd8 41.Kf1+–) 41.f3 (41.Na4 Nd5+–) 41...Kd8 42.Kf2 Kc7 43.Na4 Nd5 44.Nc5 (44.g3 g5+–) 44...Kd6 45.g3 (45.h4 e5 46.Ne4 Ke6 47.de5 Ke5+–) 45...e5 (45...g5 46.h4 gh4 47.gh4+–) 46.Ne4 Ke6 47.de5 (47.Ke2 Nb6 48.Kd3 h5+–) 47...Ke5 48.Ke2 (48.Nc5 Nb6+–) 48...Kd4 49.Kd2 Kc4 50.f4 Kb5 51.Nc3 Kc4 52.Nd5 Kd5 53.Ke3 h5 54.Kd3 Ke6 55.Ke4 Kf6 56.g4 White prepares f5 56...hg4 57.hg4 g6 58.Kd5 g5 59.f5 Ke7 60.Ke5 Kf7 61.f6 (61.f6 Kf8 62.Kf5+–) 1–0. De Visser,Arno – de Beurs, 1982.

7.0–0 Bd7 8.a4 c5 9.c4 dc4 (9...a6 10.d4=) 10.Bc4 a6 11.Ne5 ab5 12.ab5 Ra1 13.Ba1 Bc8 14.f4 (14.d4 Qc7=) 14...Bb7 15.f5 ef5 (15...Bd5 16.fe6 fe6 17.Nc3=) 16.Qb3 (better 16.Rf5 Qe8 17.Rf1=) 16...Nd5?? (better 16...Qe8=) 17.Rf5+– Bf6 18.e4 Be5 19.Be5 (19.Re5?! Nf6 20.d3 Ng4+=) 19...Qh4?? (better 19...Nf6 20.Bf6 gf6+–) 20.Bd5+– (20.ed5?! Qe1 21.Bf1 Nd7+–) 20...Bd5 21.Qd5 (worse 21.ed5 Qe1 22.Rf1 Qe5=+) 21...Qe1 (21...Nd7 22.Bg3 Qd8+–) 22.Rf1 Qe2 23.Bb8 Rb8 (23...Qb5 24.Na3 Qe8+–) 24.Qf7 (24.Qf7 Kh8 25.Qf8 Rf8 26.Rf8) 1–0. DEFFM – GuestVWSN, freechess.org, 2018.

7.a4 Bb7 8.0–0 a6 9.c4 c5 10.d3 Nbd7 11.Nbd2 ab5 12.ab5 Ra1 13.Ba1 Qc7 14.Qc2 Ra8 15.Bb2 e5 16.Ra1 Ra1 17.Ba1 e4 18.Ne1 (18.de4 de4 (worse is 18...Ne4 19.cd5 Nd2 20.Qd2+/–) 19.Ng5 Bd6 20.Nde4 Bh2 21.Kf1 Ne4 22.Ne4 Be5 23.Be5 Qe5=) 18...Bd6+= 19.h3 (19.g3 ed3 20.Nd3 Ne5=) 19...ed3 (19...Bh2!? 20.Kf1 Be5 21.Be5 Qe5 22.de4 de4+=) 20.Nd3= Ne4 (20...Ne5 21.cd5 Bd5 22.f4=) 21.cd5 Nd2 22.Qd2 Bd5 ½–½. Pech,Jaroslav (2045) – Reuter,Alfred (1770), 04. VCC–Open, 2001.

7.c4 dc4 8.Bc4 c5 (8...c6 9.a4=) 9.0–0= Bb7 10.d3 Bd5 (10...a6 11.Nc3=) 11.Nbd2 (11.Nc3 a6=) 11...Nbd7 (11...a6 12.ba6 Na6 13.e4=) 12.Ne5 (12.e4 Bb7=) 12...Ne5 13.Be5 Nd7 (13...a6 14.ba6 Bc4 15.dc4=) 14.Bb2 Bf6 15.Bf6 Nf6 16.Qc2 Qc7 17.f3 (17.Rfd1 Rad8=) 17...Qe5 18.Rfe1 Rfd8 19.a4 Qd6 20.Ra2 (20.a5 Rd7=) 20...Nd7 (20...Bc4 21.dc4 a6 22.Rd1=) 21.a5 Ne5 (21...a6 22.ab6 ab5 23.Ra8 (23.Bb5?? Ra2 24.Qc3 Nb6–+) 23...Ra8 24.b7=) 22.ab6 (22.Rea1 Rab8=) 22...ab6 23.Ra8 (23.Rea1 Ra2 24.Ra2 Qe7+=) 23...Ra8 24.Rd1 Rd8 (24...Qe7 25.Bd5 ed5 26.d4 cd4 27.ed4+=) 25.Kf2 (25.Ra1 Nd7=) 25...Qe7 26.g3 (26.Bd5 ed5 27.Kg1 Ng6+=) 26...Bc4 (26...Bb7 27.Kg2+=) 27.dc4 (better is 27.Nc4 Qg5 28.Kg2= (28.Nb6? Qh5 29.Qe2 Qh2 30.Kf1 Qg3–+)) 27...Ra8?? (better is 27...Rd3+=) 28.Qe4+– Qa7 (28...Nd3 29.Qd3 Rd8 30.Qe2+–) 29.Qe5 Qa4 30.Ke2 Qa2 (30...Qa7 31.e4+–) 31.Qc7 Qa5 (31...g6+–) 32.Nb3 Qa2 33.Ke1 (better is 33.Rd2+–) 33...g6 (33...Rf8 34.Rd8 g6 35.Nd2+–) 34.Rd8 (better is 34.Ra1!? Qb3 35.Ra8 Kg7 36.Qe5 Kh6 37.Qf4 Kg7+–) 34...Rd8 35.Qd8 Kg7 36.Nd2 (36.Qb6 Qb1 37.Ke2 Qb3 38.Qc5 Qc2 39.Kf1 Qd1 40.Kg2 Qe2 41.Kh3 Qf3 42.Qd4 f6=) 36...Qa1 37.Ke2 Qh1 (37...Qa7 38.Qd6+–) 38.Qb6 Qh2 39.Kd3 Qh5 (39...Qg3 40.Qc5 h5 41.b6+–) 40.Qc6 (40.Qd6 Qf5 41.Ke2 e5+–) 40...Qf5 41.Qe4 (41.Ke2 Qe5 42.b6 Qg3+–) 41...Qf6 42.f4 Qd8 (42...Qe7 43.Nb3 Qd6 44.Ke2+–) 43.Ke2 h5 44.Qe5 Kh7 45.Qc5 h4 (45...Qa5+–) 46.Qg5 Qa8 47.Qh4 Kg7 48.Qh2 (48.e4 Qa5+–) 48...Qa2 (48...Qb7 49.e4+–) 49.Qg2 Qc2 (49...Qb2 50.Qc6 Qa3 51.c5+–) 50.Qc6 Qf5 (50...Qa4 51.g4 Qa5+–) 51.Qe4 Qg4 52.Qf3 (52.Kd3 Qh5+–) 52...Qh3 (52...Qf5 53.Ne4 Qh3 54.Kd3+–) 53.b6 Qh2 54.Kd3 Qh3 55.b7 Qh8 56.Qe4 Qb8 57.Qe5 1–0. Nordbrink – Peske, 1980.

6.Be2 c5

7.0–0 b6 8.a4 Nbd7 9.a5 ba5 10.Bc3 Nb6 11.Ra5 Bb7 12.d4 c4 13.Ne5 Ne4 14.Be1 Bf6 15.Nc6 Bc6 16.bc6 Qc7 17.Bb4 Rfc8 18.f3 Nd6 19.e4 de4 20.Nc3 Qc6 21.Rc5 Qb7 22.fe4 Ne4 23.Bf3 Nc3 24.Bb7 Nd1 25.Rd1 Rd8 26.Ba8 Bd4 27.Kf1 Na8 28.Rd4 1–0. Machete99 – guest94, ICC, 2002.

7.0–0 Qb6 8.Nc3 Nbd7 (8...Qc7 9.a4 (9.a3 e5 10.d3 Bd6 11.Nd2 Be6 12.a4 Nbd7 13.a5 Rfd8+=) 9...e5 10.a5 e4 11.Ne1 Be6 12.d3 Re8 13.Ra4 c4=; 8...Qa5 9.Ne5 (9.Qe1 Qc7 10.Nd1 Nbd7 11.c4 e5 12.d4 e4 13.Nd2 dc4=) 9...Nbd7 10.Nb1 c4 11.a4 Bb4 12.f4 Ne5 13.Be5 Nd7=; 8...Rd8 9.a4 (9.Na4 Qa5 10.c4 Nbd7 11.Qc2 a6 12.Bc3 Qc7 13.ba6 b6=) 9...Qc7 10.d4 Nbd7 11.a5 Bd6 12.dc5 Bc5 13.Qd2 Bd6=; 8...Qd6 9.a4 (9.Nb1 Nbd7 10.d4 Rd8 11.dc5 Qc7 12.Nbd2 Nc5 13.Be5 Bd6=) 9...Nbd7 10.d4 Qc7 11.a5 Bd6 12.dc5 Bc5 13.Ba3 Ba3=) 9.d4 (9.a4 e5 10.Ng5 Qa5 11.f4 e4 12.d3 h6 13.Nh3 ed3+=; 9.Re1 e5 10.a4 Qe6 11.a5 e4 12.Ng5 Qf5 13.Nh3 d4=) 9...c4 10.a4 (10.Ne5 a6 11.a4 Bb4 12.Na2 Bd6 13.Nc3 Ne5+=) 10...a5 (10...Bb4 11.Nb1 Re8 12.Ba3 Ba5 13.Ra2 Ne4+=) 11.h3 (11.e4 de4 12.Ng5 Nd5 13.Nge4 Qc7=) 11...Qc7 (11...Bb4 12.Ne5 Rb8 13.Nb1 Ne4+=) 12.Nd2 (12.Nb1 Ne4 13.Ba3 Bb4+=) 12...b6 (12...Bb4 13.Bf3 Qb6=) 13.e4 Ne4 (13...de4=) 14.Nde4 de4 15.Ne4 Bb7 16.Nd2?? (better is 16.Bf3=) 16...c3–+ 0–1. ulla (1700) – donex7 (1825), gameknot.com, 2014.

7.0–0 Qb6 8.c4 a6 9.a4 dc4 10.Na3 ab5 11.ab5 Nd5 12.Nc4 Ra1 13.Qa1 Qb5 14.Bg7 Rd8 15.Qe5 Nd7 16.Qg3 Nf8 17.h4 Ng6 18.Ba1 h5 19.Re1 Qa4 20.Nfe5 Bh4 21.Qf3 Nf6? (better is 21...Qe8+=) 22.Ng6+– fg6 23.Qf4 (worse is 23.Bf6 Rf8 24.Qe4 Bf6 25.Qg6 Bg7 26.Qh5 Rf5+/–) 23...Ng4 24.Bg4 e5 (24...Bf2 25.Qf2 Rf8+–) 25.Qe5 Kf8 (25...Qa1 26.Be6 Be6 27.Qe6 Kh7 28.Ra1 Rf8+–) 26.Qg7 1–0. Mittelbachert,Ulrich – Winnemoeller,Bernhard, Ruhrgebiet VL1, 1997. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c5 5.e3 Be7 6.Be2 0–0)

7.0–0 c4 8.d3 cd3 9.cd3 Qb6 10.a4 Nbd7 11.Nbd2 a6 12.Bd4 Bc5 13.Bc5 Qc5 14.d4 Qd6 15.h3 Ne4 16.Ne4 de4 17.Nd2 f5 18.Qb3 Nb6 19.Nc4 Nc4 20.Qc4 Bd7 21.Qc5 Qc5 22.dc5 Rfc8 23.Rfd1 Be8 24.Rac1 ab5 25.Bb5 Bc6 26.Bc6 bc6 The passed pawn on a4 will become decisive later 27.Rc4 Rc7 28.Rd6 Kf7 29.Rb4 Ra5 30.Rc4 Ke7 31.Kh2 Rc5 32.Rc5 Attacks the isolani on c6 (better is 32.Re6! Ke6 33.Rc5=) 32...Kd6–+ 33.Rc1 c5 34.f3 ef3 35.gf3 e5 36.Kg2 c4 37.Kf2 e4 38.f4 (better is 38.fe4!? fe4 39.Ke2–+) 38...Kc5 39.Rb1 g6 40.Ke2 c3 41.a5 Kc4 42.a6? (42.Rb6–+) 42...c2 43.Ra1 (43.Rb7 Rb7 44.ab7–+) 43...Kb3 44.a7 Ra7!! 45.Ra7 Theme: Deflection from c1 45...c1Q 46.Rb7 Ka4 47.Ra7 Kb5 48.Rb7 (48.Rd7 Qc2 49.Ke1 Kc6–+) 48...Kc6 49.Rh7 Qc2 50.Kf1 Qh2 (better is 50...Qd1 51.Kg2 Qf3 52.Kh2 Qe3 53.Re7–+) 51.Rh6 Qg3 52.Ke2 Kd6 53.Rh8 Ke7 54.Rh7 Kf6 55.h4 Qg4 56.Kd2 Qf3 57.Ra7 Qf2 (57...Qf2 58.Kd1 Qe3–+) 0–1. hal1958 – Validus, playchess.de, 2003.

7.0–0 Bd7 8.a4 a5 (8...a6 9.Ne5=) 9.Ne5+= Bd6 (9...Qc7 10.d3=) 10.Nd7 (10.f4!?+=) 10...Nbd7= 11.c4 Nb6 =. mic (2140) – amikhlin (2320), net–chess.com, 2008.

7.0–0 Bd7 8.d4 a6=+ 9.ba6 ba6 (9...Na6 10.dc5 Nc5 11.c4=+) 10.Ne5 (10.dc5 Bb5=) 10...Bb5 (10...c4 11.Ba3=+) 11.c4= Bc6 (11...dc4 12.a4 c3 13.Nc3 Be2 14.Ne2=) 12.Nc6 (12.dc5 Bc5 13.Nc6 Nc6+=) 12…Nc6 (13.dc5 dc4=). makaveli1982 – doubleattack (1755), internet, 2007.

7.a4 a5 8.d3 (8.0–0 Nbd7=) 8...Nbd7= 9.Nbd2 (9.0–0 b6=) 9...Qc7 10.c4 Re8 (10...b6 11.0–0=) 11.Rc1 b6 12.cd5 (12.0–0 Bb7=) 12...ed5 13.Qb3 (13.0–0 Bb7=) 13...Bb7 (13...Qd6 14.0–0=) 14.Nd4 (14.0–0 Qd6=) 14...Rad8 (better 14...g6=) 15.g4 (15.0–0 Bd6 16.N2f3 g6=) 15...Ne5 (15...c4 16.Qc2 (16.dc4? Bb4 17.cd5 Nc5–+) 16...Nc5 17.h3–/+) 16.g5 Nfd7 17.h4 (17.0–0 Bg5 18.Nf5 Bf6–/+) 17...Qb8 (better 17...c4!? 18.Qc2 Nc5–+) 18.Nf5= Bf8 (better 18...Bd6 19.Qc2 d4=+) 19.Rg1? (better 19.0–0!?=) 19...c4–/+ 20.dc4 dc4 21.Bc4? (better 21.Rc4 Bb4 22.Rb4–+) 21...Nc4?? (21...Bb4 22.Bd4 Nc5–+) 22.Nh6!+– (22.Nh6 gh6 23.gh6 Bg7 24.Nc4+– (24.Bg7?! Re3 25.fe3 Qh2 26.Qc4 Qg1 27.Nf1 Bg2=); 22.Rc4 Qh2 23.Rcg4 g6 24.Nh6 Bh6 25.gh6 Ne5 26.Be5 Qe5–/+ (worse 26...Re5 27.Nf1 Qh3 28.Qc3+–); 22.Nc4? Be4 23.Nh6 gh6 24.gh6 Bg6 25.Nb6 Nb6–+ (25...Qb6 26.Rc6 Qc6 27.bc6 Bb4 28.Kf1+–); 22.Qc4 Qh2 23.Ke2 Ne5 24.Be5 Re5–+) 1–0. Drelinkiewicz,Tadeusz (2140) – Bakalarczyk,Wlodzimierz (1935), 16th OBSen–E–Turnier, 2007.

7.a4 a6 8.0–0 Bd7 9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Bc8 13.d4+= cd4 (13...b6 14.Qe2+=) 14.Nd4 (14.Bd4 Nbd7+=) 14...Nbd7 (14...Qc7 15.Qc2+=) 15.Be6 (15.Qc2 Nb6+=) 15...fe6= 16.Ne6 Qa5 (16...Qe8 17.Nf8 Qf8 18.Bf6 Nf6 19.Qf3=) 17.Nf8 Nf8 18.Bf6 Bf6 19.Qd5 Ne6 (19...Be6!? 20.Qb7 Qb4+=) 20.Rc1 Kf7?? (better 20...Qa8+–) 21.Nd2+– Bc3 22.Nc4 Qb4 (22...Qd8 23.Qd8 Nd8 24.Rc3 Bd7+–) 23.Nd6 Kg6 (23...Ke7 24.Nc8 Kf6+–) 24.Qf5 (24.Qf5 Kh6 25.Nf7) 1–0. pcmvr – amikhlin, net–chess.com, 2017.

7.a4 b6 8.d4 (8.a5 ba5 9.0–0 a6+=) 8...Nbd7+= 9.0–0 a5 (9...Bb7 10.c4+=) 10.Nbd2 Bb7 11.c3 (11.c4 Bd6=) 11...Rc8 (11...h6 12.c4=) 12.Rc1 Bd6 (12...h6 13.h3+=) 13.h3 (13.c4 h6+=) 13...c4 (13...Re8 14.c4+=) 14.Re1 (14.Ra1 Qe7+=) 14...e5 (14...Ne4 15.Ne4 de4 16.Nd2+=) 15.de5= Ne5 16.Ne5 Be5 17.Nf3 (17.Ba3 Re8+=) 17...Bb8 (17...Bd6 18.Nd4+=) 18.Nd4 (18.Ba3 Re8+=) 18...Ne4 (18...Re8 19.Bf3+=) 19.Bg4 (19.Ba3 Qf6 20.f4 Rfe8+=) 19...Qc7 (19...Qd6 A) 20.Bc8 Qh2 21.Kf1 Qh1 (worse is 21...Bc8 22.Qh5 g6 23.Qh4–+; 21...Rc8 22.Qg4–/+) 22.Ke2 Qg2–+; B) 20.f4+=) 20.f4 (20.Bc8?? Qh2 21.Kf1 Qh1 (worse is 21...Bc8 22.Qh5 g6 23.Qh4–+; 21...Rc8 22.Qg4–/+) 22.Ke2 Qg2–+) 20...Rcd8 21.Ba3 Rfe8 22.Rc2 (22.h4 Nc5+=) 22...g6+= 23.Bf3 (23.Rf1 Nc5 24.Re2 Qd6+=) 23...Nc5 24.Rd2 Nd3 25.Ree2 Nc5 26.Bc5 Qc5 27.Nc2? Bf4–+ 28.Kf2 Bb8 29.Nd4 Qd6 30.Qg1 Re5 31.Nc2 Rde8 32.Rd4 Rf5 33.g4 Rfe5 34.Qg2 Qf6 35.Kg1 Qe6 36.Rd1 Qd6 37.Kh1 Qf6 38.Rd4 Qg5 39.Red2 Re3 40.Ne3 Re3 (worse is 40...Qe3 41.Re2 Qc1 42.Qg1 Qg1 43.Kg1 Re2 44.Be2–+) ½–½. De Visser,Arno – Roet, 1982.

7.a4 Nbd7 8.c4 (8.0–0 Bd6=) 8...Qc7 (8...dc4 9.0–0=) 9.Qc2 (9.cd5 ed5 10.a5 Re8=) 9...b6 (9...Qd6 10.Nc3=) 10.Na3 (10.0–0 Bd6=) 10...Bb7 (10...Bd6 11.cd5 ed5 12.0–0=) 11.Rc1 (11.d3 a6=) 11...Rac8 (11...d4 12.0–0+=) 12.0–0 (12.cd5 Nd5 13.Nc4 Nb4=) 12...dc4 (12...Bd6 13.cd5 Bd5 14.h3=) 13.Nc4 Ng4 14.g3 Ndf6 (14...Bf6 15.d4=) 15.Nfe5 (better is 15.Ng5 h6 16.Bg4 hg5 17.Be2+=) 15...Rfd8?? (15...Ne5 16.Be5 Qd7 17.Bd3=) 16.Qd1 (better is 16.Ng4 Ng4 17.Bg4+–) 16...Ne5= 17.Be5 Qd7 18.Bf3 (18.d3 Nd5=). Schiffler,L – Bremer, corr ICCA, 1950.

7.a4 Ne8 8.c4 Nd6 9.Na3 Nd7 10.Qc2 Bf6 11.cd5 Bb2 12.Qb2 ed5 13.0–0 Qf6 14.Qc2 b6 15.d4 h6 (15...Re8 16.dc5 Nc5 17.Nd4=) 16.Rfd1 (16.a5 c4=) 16...Bb7 17.a5 Rac8 18.a6 (18.Qa4 Ne4 19.Rac1 c4=) 18...Ba8 19.Qb2 Rfe8 20.Rac1 Qe6 21.Nc2 Nf6 22.Nce1 c4 23.Ne5 Nfe4 (23...Red8 24.Nc2=) 24.Nc2 (24.Bg4 f5 25.Bh5 Rf8=) 24...f6 (24...Qf5 25.Rf1 h5 26.Na3=) 25.Bg4 f5 26.Bh5 Rf8 27.Na3 (27.Ng6 Rf6 28.Nf4 Qd7=) 27...Nf6 28.Be2 Nd7 29.f4 Ne4 (29...Nf6 30.Bf3=) 30.Nb1 Rfd8 31.Nc3 Nc3 32.Rc3 Nf6 33.Bf3 Ne4 34.Be4 de4 (better is 34...fe4!? 35.Qf2 Rf8+=) 35.Qb4+/– Bd5 36.Rdc1 Kh7 1–0. De Visser,Arno – Grootjen, 1987.

7.c3 b6 8.0–0 (8.c4 a6=) 8...Nbd7 (8...Bb7 9.c4=) 9.Qc2 (9.c4 Bb7=) 9...Bb7 (9...c4 10.d4 cd3 11.Bd3 a6+=) 10.Ng5 (better is 10.c4!?=) 10...h6–/+ 11.Nh3 (11.Nf3 c4–/+) 11...Qc7 (11...c4 12.Nf4–+) 12.a4 (12.c4 d4–/+) 12...a6 (12...c4!?–+) 13.Na3 (13.ba6 Ba6 14.c4 dc4–/+) 13...c4–/+ 14.ba6 Ba6 15.Nb5 Qc6 (15...Bb5!? 16.ab5 Nc5–/+) 16.Nd4+= Qc7 17.Ba3 (better is 17.Nb5 Bb5 18.ab5–/+) 17...Ba3–+ 18.Ra3 e5 19.Nf5 Nc5 20.f4 (20.Ra2 Bc8–+) 20...Bc8–/+ 21.g4 (21.Ng3!? Bh3 22.gh3 Rfe8–+) 21...e4 (21...h5!? 22.Nf2 ef4 23.g5–+) 22.Nf2 Bf5 23.gf5 Qd7 24.Qd1 (24.Rb1 Ra6–+) 24...Qf5 25.Kh1 (25.Bg4 Qg6 26.Kh1 Ne8–+) 25...Kh7 (25...Ra5 26.Qb1 Qe6 27.f5–+) 26.Ng4 (26.Bg4 Ng4 27.Qg4 Qg4 28.Ng4 f6–+) 26...Nfd7 (26...Ng4 27.Bg4 Qf6 28.Bh3–+) 27.Qe1 Ra4 28.Ra4 Na4 29.Qh4 Nac5 30.Rg1 Ra8 31.Nh6? gh6 32.Rg5 Qf6 33.Qh5 Rf8 34.Rd5 Qg6 35.Qg6 Kg6 36.Bc4 Ra8 37.Bb5 Nf6 38.Rd6 Ra2 39.h4 Kg7 40.Bc4 Ncd7 41.Ba2+– b5 42.Bd5 Kf8 43.Bc6 Ke7 44.Rd4 Nc5 45.Rb4 Kd6 46.Bb5 Ne6 47.Bc4 Nd5 48.Bd5 Kd5 49.Rb7 Kc4 50.Rf7 Nc5 51.Rc7 Kd5 52.Rc5! Kc5 53.Kg2 h5 54.Kg3 Kd5 55.f5 Ke5 56.f6! Kf6 57.Kf4 Kg6 58.Ke4 Kf6 59.d4 Ke6 60.c4 Kd6 61.c5 Kc6 62.Ke5 Kd7 63.Kf5 Kc6 64.Kg5 Kd5 65.Kh5 Ke6 66.Kg5 Ke7 67.Kg6 Ke6 68.h5 Kd5 69.h6 Ke4 70.h7 Ke3 71.h8Q Ke4 72.Qe5 Kd3 73.d5 Kc4 74.d6 Kb5 75.d7 Kc6 76.d8Q Kb5 77.Qb6 Kc4 78.Qe4 Kc3 79.Qbb4# 1–0. Wartenberg,Erwin – Tacka,Holger (1715), Rheinhessen–ch HT1 op, 1999.

7.c3 c4!? 8.d3 cd3 9.Qd3 a6 –/+.

7.Nc3 a6 8.a4 ab5 9.Nb5 Nc6 10.0–0 Ne4 11.d3 Nd6 12.c4 dc4 13.dc4 b6 14.Qb1 Bb7 15.Bd3 g6 (15...f5 16.Rd1=) 16.Rd1+= Nb4 (16...f5 17.Be2 Qb8 18.Ne5+=) 17.Bc3 (better is 17.Be5!? Bf3 18.gf3 Nb5 19.Bg6 (19.cb5?! Qd5 20.f4 Nd3 21.Rd3 Qb7+=) 19...fg6 20.Rd8 Rad8 21.ab5+–) 17...Nd3 18.Rd3 Be4 19.Rd6 Bb1 20.Rd8 Rfd8 21.Rb1 Ra4 22.g3 (better is 22.Ne5!?+=) 22...Rc4+= 23.Ra1 f6 24.Ra6 Rd3 25.Ra3 (25.Rb6 Rcc3 26.Nc3 Rc3 27.Re6 Kf7+=) 25...e5–/+ 26.Kf1 e4 27.Ne1 Rd1 28.Ra7 Kf8 29.Ke2 Rd8 30.Bd2 f5 31.Nc7 (better is 31.Na3!? Rd2 32.Kd2+/–) 31...Rd7= 32.Ra8 Kf7 33.Nb5 Bf6 (33...Ke6 34.Na3 Kd5 35.Ra6+=) 34.Na3 (34.Na3 Rc3 35.Bc3 Bc3 36.Nb1 Be1 37.Ke1+/–) 1–0. Tiedemann,Joern (2020) – Mantau,Jan (2050), RSS7E basic–36, 2011.

7.Nc3 a6 8.a4 d4 9.Na2 ab5 10.ab5 de3 11.fe3 (11.de3 Qc7=) 11...Nd5 (11...b6!?=) 12.0–0 Nd7 13.c4 N5b6 (13...N5f6 14.Nc3 Ra1 15.Qa1+=) 14.Qc2 Nf6 (14...Bd6 15.Nc3 Ra1 16.Ra1+=) 15.Nc3 Ra1 16.Ra1 Qc7 17.Ne4 (17.Bd3 Bd6+–) 17...Ne4 18.Qe4 f5 19.Qe5 Qe5 (19...Bd6 20.Qc3+–) 20.Be5 g5 21.Bc7 Nd7 22.Ne5 Ne5 23.Be5 f4? (better 23...g4+–) 24.Ra8 fe3 25.de3 h6? (better 25...Bd7 26.Ra7 Bc8+–) 26.Rb8 Kh7 (26...Kf7 27.Bh5 Kg8 28.b6+–) 27.Bd3 Kg8 28.Be4 g4 (28...Kf7 29.b6+–) 29.Bb7 Bb7 (29...Bd7 30.Bc6 Bc8+–) 30.Rb7 (30.Rb7 Re8 31.b6+–) 1–0. Janek – Vito, internet, 2018.

7.c4 b6 8.0–0 Bb7 (--> 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).

7.d3 Qa5 8.Nc3 Bd7 9.a4 Qb4 (9...d4 10.ed4 cd4 11.Nd4 Bb4–+) 10.Rb1= d4 11.Ba1 Qa5 12.ed4 cd4 13.Nd4 Bb4 14.Qd2 Nd5 15.Nb3?? (better is 15.Rb4 Nb4 16.0–0=) 15...Qc7–+ 16.0–0 Bc3 17.Qc1 Ba1 18.Ra1 a6 19.c4 Nf4 20.Bf3 (20.Qe3 Ne2 21.Qe2 e5–+) 20...Nd3 21.Qe3 Nb4?? (21...Ne5!? 22.Rac1 Nf3 23.Qf3–+) 22.Rfc1? (22.Qc5 Bc6 23.Qb4 Bf3 24.gf3 Nd7–/+) 22...ab5 (better is 22...Bc8–+) 23.cb5+= Qd8?? (better is 23...Bc6+=) 24.Nc5?? (better is 24.Bb7 Nd5 25.Qd4+=) 24...Qb6 (24...Bc8 25.Nb7 Bb7 26.Bb7–/+) 25.Qb3? (better is 25.Nb7!? Qe3 26.fe3=) 25...Nd5!–+ 26.Bd5 ed5 27.Qd5 Be6?? (27...Bc8 28.Re1–+) 28.Qe4?? (28.Qb7!? Qb7 29.Nb7=) 28...Nd7 (better is 28...Bc8–+) 29.Nd3? (better is 29.Qb7 Ra5 30.Qb6 Nb6 31.Rd1+=) 29...Nf6 30.Qb4 Rfd8 31.Nb2 Qd6 32.Qd6 Rd6 ½–½. Kochukova,G – Kagan,L, Angarsk (Women) op, 2007.

7.d3 a6=+ 8.c4 (8.ba6 Qa5 9.Bc3 Qa6=+) 8...Nbd7 (8...dc4 9.dc4 Qd1 10.Bd1 ab5 11.cb5=+) 9.0–0 ab5 10.cb5 b6 11.a4 Bb7 12.Qc2 Bd6 13.Nbd2 e5 14.d4 (14.Rfc1 Re8=+) 14...e4 15.Nh4 (15.Ne5 Qc7=+) 15...Ng4 16.Nf5 (better is 16.g3 Qg5 17.dc5 Nc5 18.Qd1–/+) 16...Ndf6?? (16...Bh2 17.Kh1 g6 18.Bg4 gf5 19.Bf5 Bd6 20.Bd7 Qd7 21.dc5 Bc5=) 17.g3 (17.dc5 bc5 18.Bg4 Ng4 19.Bg7 Re8+/–) 17...Rc8 (17...c4 18.h3 Nh6 19.Nh6 gh6 20.f3=) 18.Qc3 (18.Qd1 h5 19.h3+/–) 18...cd4 19.Qd4 Bc5 20.Qc3 Be3! 21.Qb4 (21.fe3 Rc3) 21...Bc5 22.Qb3 Qd7 (better is 22...d4–+) 23.Bg4 Ng4 24.Ng7 d4 25.Nh5 Bd5 26.Qd1 f6 (26...Rfd8 27.h3 Qf5 28.hg4+/–) 27.Nb3 (27.Nf4 Bb7–/+) 27...e3 (better is 27...Bb3!? 28.Qb3 Qf7 29.Qf7 Kf7–/+) 28.Nc5=+ bc5 29.Qd3 (29.f3!? Nf2 30.Qe2–/+) 29...Nf2 30.Qe2?? (better is 30.Rf2 ef2 31.Kf2–+) 30...Nh3 0–1. Maedel,Katja – Zumsande,Martin, GER–ch U13 Osnabrueck, 1994.

7.h4 Bd7 8.h5 h6 9.Ne5 Ne4 (9...a6 10.ba6 Na6 11.0–0=+) 10.d3 (10.Nc3 Nd6=+) 10...Nd6 (10...Qa5!? 11.c3 Qb5–/+) 11.a4 a6 12.c4 Be8 13.Nd2 Nd7 14.Ndf3 Ne5 15.Ne5 Bf6 16.g4 (16.0–0 dc4 17.dc4 Qc7=) 16...Qa5=+ 17.Kf1 Rd8 (17...Qc7 18.f4=+) 18.Qb3 (18.Qc2 Qc7=+) 18...Qc7 (18...dc4 19.Nc4 Nc4 20.dc4=+) 19.b6 Qe7 20.Bf3 Nc8 21.Bg2 (21.g5 Bg5 (21...hg5?! 22.h6=) 22.cd5 ed5 23.Bd5 Nb6–/+) 21...Be5 (better 21...Qd6!? 22.f4 Nb6–/+) 22.Be5= Bc6 23.f4 (better 23.Qb2!? Qg5 24.Bf4+=) 23...dc4–/+ 24.dc4 Bg2 25.Kg2 Rd2 26.Kf3 Rfd8 27.g5? (27.Ra3 Qd7 28.g5 hg5 29.fg5 Nd6 30.Bd6 Qd6–/+ (worse 30...Rd6 31.a5–/+)) 27...Qd7 (better 27...R8d3!? 28.Qb1 Qd7–+) 28.Ra3–/+ Qc6 29.e4 Nd6 (29...Nb6 30.Rg1 hg5 31.a5–+) 30.Re1 (30.Bd6 R8d6 31.Qb1 R6d4–/+) 30...Nf5 (30...Rh2 31.Kg3 Ne4 32.Re4 Qe4–+) 31.gh6 (better 31.Qb1–/+) 31...f6–+ 32.Bf6 (32.Qc3 Rh2 33.Bf6 Qe8 (33...gf6 34.Qf6 Rh3 35.Kg2 Ra3 36.Qd8 Kh7 37.Qc7 Kh6 38.Qc6 Ra2 39.Kf1 Ng3 40.Kg1 bc6 41.Rb1 Ne2 42.Kf1 Ng3 43.Ke1+–) 34.h7 Kh7 35.ef5 Qh5 36.Ke4 ef5 37.Ke5 gf6 38.Ke6 Qe8 39.Kf5 Qg6 40.Ke6 Qg8 41.Ke7 Qe8 42.Kf6 Qg6 43.Ke7 Qd6 44.Kf7 Rf8) 32...gf6 33.Raa1 (33.Qc3 Nd4 34.Kg4–+) 33...Kh7 (33...Nd4 34.Kg4 Nb3 35.h7 Kh7 36.Rg1 Qe4 37.Ra3 Rg8 38.Kh3 Qf3 39.Rg3 Qg3) 34.Rg1 (34.Qc3 Nd4 35.Qd4 cd4 36.Rad1 Rd1 37.Rd1–+) 34...Nd4 35.Kg4 Re2 (35...Qe4 36.Qd3 Rg8 37.Kh3 Qd3 38.Rg3 Qg3) 36.Kh4 0–1. Tikerpuu,Mati (1950) – Giedraitis,Mingaudas (1815), 4th Rynia Poland, NATO Championship, 2013.

7.0–0 a6

8.a4 a5 9.c4 b6 10.d3 Bb7 11.Nbd2 Nbd7 12.Rc1 Qc7 13.Rc2 Rad8 14.Qa1 e5 (better is 14...Bd6!?=) 15.Ne5+/– Bd6 16.Nd7 1–0. pcmvr – wvmaniac (2665), net–chess.com, 2016.

8.a4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.c4 b6 (11...dc4 12.Bc4 Nb6 13.d3=) 12.Nc3 (12.d3 Bd6=) 12...Qc7 (12...dc4 13.Bc4 Bb7 14.d4=) 13.Qb3 (13.Qc2 Bd6=) 13...Bb7 14.Bb2 Ra8 15.Rc1 Qb8 (15...Bd6 16.cd5 ed5 17.d4=) 16.Qd1 (16.cd5 Nd5 17.d4 cd4 18.Nd4 Bd6=) 16...Ra5 (16...dc4 17.Bc4 Bd6 18.h3=+) 17.Ra1 (17.cd5 Nd5 18.d4 N5f6=) 17...Qa8 (17...Ra1 18.Ba1 dc4 19.Bc4=+) 18.Ra5 Qa5 19.Qa4 (19.cd5 Nd5 20.Qc2 Nb4=) 19...Qa8 (19...Qb4 20.Qb4 cb4 21.Nb1=) 20.Ne1 (20.Qa8 Ba8 21.d3 Kf8=) 20...Ne4 (20...d4 21.Qa8 Ba8 22.ed4 cd4 23.Na4+=) 21.Qa8= Ba8 22.Ne4 de4 23.f3 Bf6 24.Bf6+= Nf6 25.Kf2 Kf8 26.f4 Ke7 27.g4 h6 28.h4 Ne8 29.g5 Nd6 30.Kg3 hg5 31.fg5 Bb7 32.h5 Bc8 33.Kf4 f6= 34.gf6 gf6 35.d4 ed3 36.Bd3 e5–/+ 37.Kg3 Be6 38.h6 Kf7–+ 39.Ng2 e4 40.Be2–/+ Bc4 41.Bh5 Kg8–+ 42.Bg6 Bf7 43.h7–/+ Kg7 44.Bf7 Nf7 45.Nf4 Kh7 46.Nd5 Kg6 47.Kf4 Nd6–+ 48.Nb6 Nb5 (better is 48...c4 49.Nd5 Nb5 50.Ke4 f5 51.Kf3 Kf7–/+) ½–½. Meulner,Klaus – Kruse,Walter, Bad Zwesten op 5th, 2001.

8.a4 ab5 9.ab5 Ra1 10.Ba1 Nbd7 11.c4 Nb6 12.d3 dc4 13.dc4 Qd1 (13...Nbd7 14.Qc2+=) 14.Rd1 (worse is 14.Bd1 Nc4 15.Be2 Nd6–/+) 14...Ne4 (14...Nfd7 15.Kf1+=) 15.Nbd2 (15.Be5 f6 16.Bc7 Na8=) 15...Nd2 16.Rd2 f6 17.Bc3 Nd7 (17...e5 18.Ba5 Nd7 19.Bc7+=) 18.e4 (18.Bd3 Rd8+=) 18...g6 (18...e5 19.h3=) 19.Ne1 (19.e5 fe5 20.Ne5 Bf6+=) 19...f5 (19...Rd8 20.f4+=) 20.ef5 (20.e5 g5+=) 20...ef5 21.Bf3 Bf6 22.Bf6 Nf6 23.Nc2 (23.Bd5 Nd5 24.Rd5 b6=) 23...Re8 (23...Kf7 24.h3+=) 24.g3 (24.h3 Kf7=) 24...Kf8 (24...Kf7 25.Ne3=) ½–½. Skjonberg,Sverre – Sigvaldsen,Selmer, corr Norway, 1999.

8.a4 Nbd7 9.Re1 =.

8.ba6 Na6 9.Nc3 =.

8.ba6 b6 =.

8.c4 ab5 9.cb5 Bd7 10.Nc3 Qa5 11.Qc2 Ne4 (11...Bd6 12.d4 c4 13.a4=) 12.a4 Bf6? (better is 12...Nf6=) 13.Ne4+/– Bb2 (13...de4!? 14.Ne5 Be5 15.Be5 f5+–) 14.Neg5+– (14.Qb2?! de4 15.Ng5 f5+/–; 14.Nc5 Ba1 15.Ra1 Rc8–/+) 14...g6 15.Qb2 Be8? (15...f6 16.Nh3 g5+–) 16.Ne5 Qd8 17.Ng4 Qg5 (17...d4 18.f4 h5+–) 18.Nf6 Kg7 (18...Qf6 19.Qf6 Nd7+–) 19.Ne8 Kh6 (19...Kg8 20.Qg7) 20.Qg7 1–0. usingprogram (1975) – capranica, kurnik, 2012.

8.c4 ab5 9.cb5 Nbd7 10.d3 Nb6 11.a4 Nbd7 12.Nbd2 b6 13.Qc2 Bb7 14.Bc3 White prepares the advance a5 14...Qc7 15.a5 ba5 16.Ra4 Qb6 17.Rb1 Ra7 18.h3 Rb8 19.Ne5 Ne5 20.Be5 Rc8 21.Qc3 Ne8 22.Qa1 Bf6 23.Bf6 Nf6 24.Qa2 h6 25.Nf3 Ne8 26.Ne5 Nd6 Exerts pressure on the isolated pawn 27.Nd7 Qd8 28.Ne5 Raa8 29.Ra3 f6 30.Ng6 Qe8 31.Bh5 Nb5 32.Ra5 Nd6 33.Qa3 Ra5 34.Qa5 e5 35.Bg4 Rc6 (better is 35...f5!? 36.Bh5 d4+=) 36.Qa4= Rc7 37.Qe8 Ne8 38.Rb6 c4 39.Be6 Kh7 40.Nf8 ½–½. Trokenheim,Marek (1765) – Smith,Douglas Royston (1690), OP–2012–0–02150, 2012.

8.c4 dc4 9.Bc4 ab5 10.Bb5 Qb6 11.a4 Bd7 12.Na3 Bb5 13.Nb5 Nc6 14.Ne5 Ne5 15.Be5 Nd5 16.Qb3 Bf6 17.Bf6 Nf6 18.d4 cd4 19.Nd4 Qb3 ½–½. Gomez Baillo,Jorge H (2415) – Pol Valveny,Ramon, Tarragona op, 1994.

8.a4 Bd7

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Qb3 Ne4 A) 14.Bd3 Nd6 (14...Qa1 15.Be4 Qa5 16.Nc3 Qb6 17.Ne5 Bc8 18.Rd1+=) 15.Nc3 Rc8 16.Ne5 Qb4 17.Qc2 Qh4 18.Be2=; B) 14.Qb2 Bf6 15.Qa3 Qa3 16.Na3 Be7 17.Rc1 Rc8 18.Bb2=; C) 14.Bc3 Nc3 (14...Qb6 15.Be5 Nd6 16.Nc3 Nc4 17.Qc4 f6 18.Bg3+=) 15.dc3 Rd8 16.Rd1 Qc7 17.Nbd2 Bc8 18.Qb1+=; D) 14.Nc3 Nd6 15.Bd3 Rd8 16.Rb1 b6 17.Ne5 h6 18.Ne4=; E) 14.d3 Qa1 15.de4 Qf6 16.e5 Qg6 17.Rd1 Qh5 18.Nc3+=.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Bc3 Qb6 A) 14.d4 Ne4 (14...Nd5 15.Qd3 Rc8 16.Rc1 Nc3 17.Nc3 cd4 18.Nd4=; 14...Rc8 15.Ne5 Bd6 16.dc5 Qc5 17.Bd4 Qb4 18.Bc3=; 14...Ne8 15.Ne5 Nf6 16.Qe2 Rc8 17.dc5 Bc5 18.Bd3+=; 14...Rd8 15.Qd3 Ne8 16.Ne5 Nd6 17.Na3 Be8 18.Qc2=; 14...Qc7 15.dc5 Qc5 16.Qe2 Rc8 17.Bd3 Qh5 18.Rd1+=) 15.Bd3 Nc3 16.Nc3 cd4 17.Nd4 Rc8 18.Na4=; B) 14.Qa4 Ne4 (14...Nd5 15.Rd1 Nc7 16.Na3 Nd5 17.Be5 Na6 18.Qb3+=; 14...Ne8 15.Na3 Nd6 16.Be2 f6 17.d4 Ne4 18.Bb2+=; 14...Rd8 15.d3 Rf8 16.Nbd2 Nd5 17.Bb2 Nc7 18.Be5+=; 14...Na6 15.d4 Ra8 16.dc5 Qc5 17.Rc1 Qh5 18.Be2=) 15.Be5 f6 16.Bf4 Nd6 17.Bd6 Bd6 18.d4=; C) 14.Ne5 Bd6 (14...Rd8 15.d4 Bd6 16.dc5 Bc5 17.Qe2 Nd5 18.Rd1+=; 14...Ne4 15.d4 Nc3 16.Nc3 Qc7 17.Ne4 cd4 18.Qd4+=; 14...Rc8 15.f4 Rf8 16.Qb3 Qd6 17.d4 Ne4 18.Bb2+=; 14...Qc7 15.f4 Ne4 16.Qc2 Nc3 17.Nc3 Rd8 18.Bd3+=; 14...Be8 15.d4 Nd5 16.Qg4 Nc3 17.Nc3 cd4 18.Qd4+=) 15.Qe2 Rd8 16.d4 Qc7 17.f4 Nd5 18.Bb2=; D) 14.Na3 Rd8 (14...Nd5 15.Be5 f6 16.Bb2 Qd6 17.e4 Nf4 18.e5+=) 15.Qc2 Nd5 16.Ra1 Nc3 17.dc3 Qc7 18.Bd3+=; E) 14.Qb3 Ne4 (14...Rd8 15.d3 Nd5 16.Be5 Nf6 17.Nc3 Ng4 18.Bf4+=; 14...Rc8 15.d3 Rd8 16.Nbd2 Nd5 17.Be5 Be8 18.Ra1+=; 14...Re8 15.Rc1 Rd8 16.d4 Ne4 17.Bb2 cd4 18.Bd4+=) 15.Be5 Nd6 16.Nc3 Qa5 17.Rb1 Rd8 18.d3+=.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Qc7 A) 14.Qc2 Rc8 (14...Bd6 15.Ne4 Ne4 16.Qe4 Be7 17.Be5 Qb6 18.Qf4+–; 14...b6 15.Ne4 Nd5 16.Neg5 g6 17.Qe4 Qd8 18.Qh4+–; 14...Qa5 15.Bb2 Rd8 16.Ra1 Qc7 17.Ne4 Nd5 18.Neg5+–; 14...Rd8 15.Ne4 Ne4 16.Qe4 Qb6 17.d4 Rc8 18.dc5+–; 14...Re8 15.Ne4 Ne4 16.Qe4 Qb6 17.d4 Rc8 18.dc5+–) 15.Ne4 Ne4 16.Qe4 Qb6 17.Be5 f6 18.Bg3+=; B) 14.Qb3 b6 (14...Rd8 15.Rd1 Bd6 16.Ne2 Ng4 17.Ng3 b6 18.Qc3+=; 14...Bd6 15.d3 Rd8 16.b6 Qc8 17.Ne4 Ne4 18.de4+=; 14...Rc8 15.d3 Rd8 16.Na4 Ng4 17.h3 Nf6 18.Be5+=; 14...Re8 15.Rd1 Bd6 16.b6 Qd8 17.d4 cd4 18.Nd4+=) 15.Ne2 Bc8 16.Be5 Qb7 17.d3 Nbd7 18.Bb2+=; C) 14.d3 Bd6 (14...Rd8 15.Qc2 Bd6 16.Ne4 Ne4 17.de4 Qb6 18.Qb2+=; 14...Re8 15.Ne4 Ne4 16.de4 Rd8 17.Qc2 Be8 18.Be5+=; 14...Rc8 15.Ne4 Ne4 16.de4 Be8 17.Qc2 Nd7 18.Rd1+=; 14...b6 15.Ne4 Ne4 16.de4 Bc8 17.Be5 Qb7 18.Qa1+=) 15.Qb3 Rd8 16.b6 Qc8 17.Ne4 Ne4 18.de4+=; D) 14.Qe2 b6 (14...Rd8 15.d3 b6 16.Bb2 Bc8 17.Ra1 Bb7 18.e4+=; 14...Bd6 15.d3 e5 16.Ne4 Ne4 17.de4 Bg4 18.h3+=; 14...Re8 15.d3 Rd8 16.Bb2 Bd6 17.Ra1 Bc8 18.Ne4+=; 14...Rc8 15.e4 e5 16.Rb1 b6 17.Ne5 Qe5 18.Nd5+–; 14...e5 15.Qd3 Qd6 16.Nd5 Nd5 17.Be5 Qb6 18.Bd5+–) 15.e4 Bc8 16.Bb2 Rd8 17.Rd1 Bb7 18.h3=; E) 14.Bb2 Ne8 (14...Rd8 15.Qc2 Bd6 16.Ne2 Ng4 17.Ng3 b6 18.Qe4+–; 14...Bd6 15.Qc2 Rd8 16.Ne4 Ne4 17.Qe4 f6 18.Be6+–) 15.Ne4 Nd6 16.Nd6 Bd6 17.Qc2 Be7 18.Be5+–.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Bd6 14.Qc2 (14.d3 Rd8 15.Qc2 Qc7 16.Ne4 Ne4 17.de4 Qb6 18.Qb2+=; 14.Qb3 Rd8 15.Rd1 Qb4 16.Qa2 Bc7 17.Ne5 Qa5 18.Qa5+=; 14.d4 Rc8 15.d5 Rd8 16.Qd3 h6 17.e4 ed5 18.Nd5+=; 14.Qe2 Qc7 15.Bb2 Rd8 16.Ra1 Ng4 17.h3 Ne5 18.Ne5+=) 14...Re8 (14...Rd8 15.Ne4 Ne4 16.Qe4 Qc7 17.Ng5 g6 18.Qf3+–; 14...Qc7 15.Ne4 Ne4 16.Qe4 h6 17.Qg4 e5 18.Qh5+–; 14...Rc8 15.Ne4 Ne4 16.Qe4 Bb5 17.Ng5 Kf8 18.Bb5+–; 14...Qd8 15.Ne4 Ne4 16.Qe4 Bc8 17.Qg4 g6 18.e4+–; 14...Qa7 15.Na4 Qa5 16.Rb1 Qc7 17.Bf6 gf6 18.Nc3+–) 15.Ng5 Be7 16.Bb2 h6 17.Ra1 Qc7 18.Nf3+–.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Rd8 14.Qc2 (14.d3 Bd6 15.Qc2 Qc7 16.Ne4 Ne4 17.de4 Qb6 18.Qb2+=; 14.Qb3 Bc8 (14...Bd6 15.Rd1 Qb4 16.Qa2 Bc7 17.Ne5 Rc8 18.f4+=; 14...Qb6 15.Na4 Qa5 16.d4 cd4 17.Bd4 Qb4 18.Qb4+=; 14...Qc7 15.d3 b6 16.Ne2 Bc8 17.Be5 Bd6 18.Bf6+=; 14...Ne8 15.Ne4 Nd6 16.Nd6 Bd6 17.Bc3 Qc7 18.Qb2+–; 14...h6 15.Bb2 Qb4 16.Qa2 Ne8 17.Ne5 b6 18.Ra1+–) 15.Qc2 Nbd7 16.Bb2 Qc7 17.Ra1 Nb6 18.Be2=; 14.Ne5 Be8 (14...Bd6 15.f4 Bc8 16.Qf3 Qc7 17.d3 b6 18.Nc6+=; 14...Qc7 15.f4 Be8 16.d3 Nbd7 17.Nd7 Qd7 18.Qf3+=; 14...Bc8 15.Qf3 Rd2 16.Ne4 Rd8 17.Ng5 Rf8 18.Qh3+–; 14...Qb6 15.d3 Qd6 16.Ng4 Qc7 17.Qf3 b6 18.Ne2+=) 15.d3 Qc7 16.f4 Nbd7 17.Nd7 Qd7 18.Qf3+=; 14.Qe2 Qc7 (14...Bd6 15.e4 e5 16.Ng5 Be8 17.f4 Bc7 18.Nd5+–; 14...Qb6 15.d3 Bc8 16.Na4 Qa7 17.Qc2 b6 18.Be5+=; 14...Ne8 15.Ne4 Nd6 16.Nd6 Bd6 17.Ng5 h6 18.Ne4+–; 14...Be8 15.Bb2 Nd5 16.Ra1 Qb4 17.Ba3 Nc3 18.Qf1+=; 14...Qa7 15.Bb2 Qa5 16.Ra1 Qc7 17.e4 Ne8 18.e5+–) 15.e4 Bc8 16.Rd1 b6 17.d4 cd4 18.Nd4=) 14...Be8 (14...Bd6 15.Ne4 Be7 16.Nf6 Bf6 17.Bf6 gf6 18.Rb1+–; 14...Ne8 15.Bb2 Nd6 16.Ra1 Qc7 17.Bd3 h6 18.Ne5+=; 14...Qb6 15.Na4 Qa5 16.Rb1 Rc8 17.Be5 Ng4 18.Bd3+–; 14...Qc7 15.Ne4 Ne4 16.Qe4 Qb6 17.d4 Rc8 18.dc5+–) 15.Bb2 Qc7 16.Ra1 (16.Be2 Bd6 17.Rc1 Nbd7 18.Ne4+=) 16...Nbd7 17.Be2 Nb6 18.Ne4 Nbd5 19.Be5 Qb6 20.Nc3 Nc3 21.dc3 Nd5 (worse 21...Bb5 22.Qb1+–) 22.e4 Nf6 23.c4 h6 (23...Nd7 24.Bc3+=) 24.Bc3+– Qc7 25.e5 Nd7 26.Qe4 Nf8 27.Ra7 Rd7 28.h4 (28.Ba5 Qc8+–) 28...Qb8 29.Ra3 Qd8 30.Ra2 Ng6 31.g3 (31.g3 Kh8 32.h5+=). prr – dmnss1, internet, 2008.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Ne8 A) 14.Ne5 Bf6 (14...Nd6 15.Bd3 Bf6 16.f4 Rd8 17.Qh5 g6 18.Qe2=) 15.Ne4 Bb5 16.Bc3 Qa6 17.Nc5 Qb6 18.Bb5=; B) 14.Qb1 Nd6 (14...Qb4 15.Qa2 Nd6 16.d3 Bd8 17.Rb1 Qa5 18.Na4+=) 15.Bd3 h6 16.Ne5 Rd8 17.Rc1 Qb4 18.Qc2=; C) 14.Bd3 Nd6 (14...Nf6 15.Qc2 Rc8 16.Ne5 Rd8 17.Rb1 Qc7 18.Ne4+=; 14...f5 15.Qe2 Nd6 16.e4 Qd8 17.Rc1 b6 18.Re1+=; 14...h6 15.Ne5 Qc7 16.Ne4 f5 17.Ng3 Bf6 18.f4+=) 15.Qc2 f5 16.Be2 Bf6 17.d4 Rc8 18.Qd2=.

9.c4 dc4 10.Bc4 ab5 11.ab5 Ra1 12.Ba1 Ne4 13.d3 (13.Qc2 Nd6=) 13...Qa5 Attacks the isolani on b5 (13...Nd6 14.Qb3=) 14.Be5 Bb5? (better is 14...Nd6 15.Qd2 Qd2 16.Nbd2 Nc4 17.dc4 f6+=) 15.Bb5+– Nf2 16.Qb3 Ng4 17.e4 (17.Bf4!? Qb4 18.Qb4 cb4+–) 17...Qb6+/– 18.Bc4 (18.Kh1!?+/–) 18...Qb3+= 19.Bb3 Nc6 (19...Ne5 20.Ne5 Bf6 21.Nf3+=) 20.Bf4+/– c4 21.Bc4 Bc5 22.Kh1 Nf2 23.Rf2 Bf2 24.Nc3 Rd8 (24...Na5 25.Bb5+=) 25.g3 (25.e5 Bd4 26.Ne4 Ra8+=) 25...Nb4+= The backward pawn on d3 becomes a target 26.Kg2 (better is 26.Bg5!? Rc8 27.Nb5+=) 26...Nd3+= 27.Bc7 Rd7 28.Nb5 Be3 29.Bd3 (29.Bd6!? Nb2 30.Ne5=) 29...Rd3–/+ 30.Ne5 (30.Nd6 Rb3–/+) 30...Rb3 (30...Rd2 31.Kh3–/+) 31.Nd6 b5 (31...Rb2 32.Kh3 Rc2 33.Ba5–/+) 32.Ndf7 (32.Nef7!? Rc3 33.Nb5 Rc7 34.Nh6 Bh6 35.Nc7=) 32...b4+= 33.Nd8 (better is 33.Kh3!?+=) 33...Rc3–+ 34.Ba5 Rc5 35.Bb4 Re5 36.Kf3 Bg1 (36...Bb6 37.Nc6 Rb5 38.Bd6–+) 37.Bd6–/+ Ra5 (37...Rg5–/+) 38.Kg2 (better is 38.Ne6!? Rh5 39.e5 Rh2 40.Nc7–/+) 38...Bc5–+ 39.Bc5 Rc5 40.Ne6 Re5 41.Nf4 Re4 42.Kf3 Ra4 43.Kg4 (43.h3 Ra3 44.Kg4 Kf7–+) 43...Kf7 44.Kf5 Ra5 45.Kg4 (45.Ke4 g5 46.Nd5 h6–+) 45...Rb5 (45...g5 46.Ne2–+) 46.Nd3 Kf6 47.h4 Rb3 48.Nf4 Rb4 (48...g6 49.Kh3–+) 49.Kf3 Rb3 50.Kg4 Ke5 (50...g6 51.Nd5 Ke5 52.Nf4–+) 51.Ne2 (51.h5 Rb1–+) 51...Ke4 52.Nf4 Ke3 53.Nh3 Rb4 54.Nf4 Kf2 55.h5 Rb3 (55...Rc4 56.Kh3–+) 56.Kh4 (56.Nh3 Kg2 57.Nf4 Kh2 58.Kh4–+) 56...Rg3 57.Nh3 (57.Ne6 h6 58.Nf4–+) 57...Rh3! 58.Kh3 Kf3 59.Kh4 h6 (better is 59...Kf4 60.Kh3–+) 60.Kh3 Kf4 61.Kh4 0–1. De Visser,Arno – Poland, 1986.

7.0–0 Nbd7

8.a4 a5 9.c4 b6 10.d3 Bb7 11.Nbd2 Qc7 12.Qc2 Rfd8 13.Rae1 Nf8 14.Qb1 (14.cd5 Nd5 15.Be5 Bd6 16.Bd6 Qd6=) 14...Ng6 15.Qa1 Ne8 16.Bd1 (16.g3 dc4 17.Nc4 f6=) 16...Bf6 (16...dc4 17.dc4 Rd7 18.Bc2+=) 17.Bc2 (17.cd5 ed5 18.Bc2 Bb2 19.Qb2 Nd6+=) 17...Bb2 18.Qb2 Rd7 (18...dc4!? 19.dc4 Rd7+=) 19.cd5= Bd5 20.Rc1 Qd8 21.Rfd1 Rc8 22.Bb1 (22.d4 cd4 23.Nd4 Ne5=) 22...Nf6 23.d4 cd4 24.Nd4 Rdc7 25.Nf1 ½–½. Nadanian,Ashot (2435) – Kim,Alexey (2380), Pripis mem8–th, 2002.

8.a4 a5 9.c4 b6 10.d4 Bb7 11.Nbd2 Rc8 12.Rc1 cd4 13.Nd4 Rc7 14.cd5 Nd5 15.Nc6 Bc6 16.bc6 Nc5 17.Bb5 Rc8 (17...Nb4 18.Be5 Bd6 19.Nc4 Be5 20.Ne5=) 18.Nc4+/– Qc7 19.Be5 Qa7 20.Bd4 Nb4 21.Qg4 g6 22.Ne5 f5 23.Qe2 Qc7 24.Bc5 bc5 25.Nd7 Rfd8 26.Nc5 Bc5 27.Rc5 Rd5 28.Rd5 ed5 29.Rc1 Qd6 30.Rc3 Rc7 31.Qd2 Qe5 32.g3 Kf7 33.Rc5 Ke7 34.Kg2 (34.Bf1 Nc6 35.Bg2 Qa1 36.Rc1 Qe5+/–) 34...Kd6+/– 35.Rc1 Re7 (35...Nc6 36.h3+/–) 36.f3 Kc7 37.Kf2 Re6 38.Rc5 Qd6 39.Qc3 Qe5 40.Qd2 Re7?? (40...Qd6 41.Rc3 Qe5+–) 41.Be2 Kb6? (better is 41...Kd6 42.Ra5 Nc6+–) 42.Rb5 Kc6 43.Ra5 Qd6 44.Qc3 (44.Rb5!? d4 45.Kg1 d3 46.Rb4 Qc5 47.Bd3 Qe3 48.Qe3 Re3+–) 44...Kd7 45.Rc5 1–0. Ackermann,Robert (1920) – Greul,Hans (2025), Mittelfrankenliga–B2b, 2006.

8.a4 a5 9.d3 b6 10.Nbd2 Bb7 11.c4 Rc8 12.Rc1 Bd6 13.h3 Bb8 14.Bf6 Qf6 (worse is 14...gf6 15.d4+=) 15.Nh2 d4 16.Bf3 Bf3 17.Ndf3 e5 18.Qd2 Rfe8 19.Ng4 Qg6 20.ed4 ed4 21.Rce1 f5 22.Ngh2 h6 23.Re8 Re8 24.Re1 Re1 25.Qe1 Kf7 26.Nh4 Qe6 27.Qd1 g6 28.Qf3 Bh2 29.Kh2 Kf6 30.Qa8 h5 (better is 30...Ke7=) 31.Qh8+/– Ke7 32.Qg7 Kd8 33.Qg6 Qg6? (33...Qe5 34.Qg3 Qg3 35.Kg3 Ne5=) 34.Ng6+– Ke8 35.Kg3 Kf7 36.Nf4 Nf6 37.Kh4 Ne4 38.de4 fe4 39.Nd5 Ke6 40.g4 (40.Nb6 Kd6+–) 40...hg4 41.Kg4 (worse is 41.Nb6 d3 42.Nd5 gh3 43.Kh3 d2+–; worse is 41.hg4 d3+–) 41...d3 (41...Ke5 42.f4 Kd6 43.Nb6+–) 42.h4 (better is 42.Kf4!? d2 43.Nc3 Kf7+–) 42...Ke5 43.h5 (43.Nb6?? d2 44.Nd7 Kd4–+) 43...Kd4 (43...d2 44.Ne3 Kf6+–) 44.Ne3 (44.Nb6?? d2 45.Kg5 d1Q–+) 44...Kc3 45.h6 Kb3 46.h7 1–0. Sieber,Martin (2015) – Bochenek,Andrzej (1755), Orlova op, 2006.

8.a4 a6 9.c4 dc4 10.ba6 b6 11.Bc4 Ba6 12.Ba6 Ra6 13.Qe2 Qa8 14.Nc3 Qb7 15.Nb5 Rfa8 16.Nc3 Nd5 17.Qc4 Nc3 18.Bc3 Qa7 19.Qd3 Ra4–/+ 20.Ra4 Qa4 21.Rb1 c4 22.Qe4 Nc5 23.Qg4 Bf8 24.h4 Qc2 25.Rb6 Na4–+ 26.Rc6 Nc3 27.dc3 Qd1 28.Kh2 Bd6 29.Rd6 Qd6 30.Kh3 Qd5 31.Nd4 Ra2 32.e4 Qe5 33.Qf3 Rd2 34.Qe3 Rd3 (35.Qf3 Qe4–+) 0–1. Woronowicz,Zbigniew – Kjaerstad,Eivind J, corr 3GMM–04, 1996.

8.a4 b6 9.d4 Qc7 10.Nbd2 Bb7 11.c4 Rad8 12.Rc1 Rfe8 13.h3 Bd6 14.Re1 Qb8 15.Qc2 Rc8 16.Qb1 Qa8 17.Qa1 Be7 (17...cd4!? 18.Bd4 e5=) 18.a5+= Qb8 19.Red1 Red8 20.Ne1 cd4 21.Bd4 Bc5 22.Bb2 Be7 23.a6 Ba8 24.Bf3 dc4 25.Nc4 Bf3 26.Nf3 (worse is 26.gf3 Rc5 27.Qa4 Rh5+=) 26...Nc5 27.Be5 Qa8 28.Qb1 Nfe4 29.Nd4 Bf8 (29...f6 30.Bh2=) 30.Nc6 Rd1 31.Rd1 Nf6 (31...f6 32.Bd4 Rc6 33.bc6 Qc6 34.Nd2+/–) 32.Qa1 (32.Bf6 gf6 33.Nd6 Rc6 34.bc6 Qc6+/–) 32...Ne8 33.Bd6 (33.Nd6 Rc6 34.bc6 Qc6 35.Ne8 Qe8+/–) 33...f6 (33...Nd6!? 34.Nd6 Rc6 35.bc6 Qc6+=) 34.Qa2 Kf7?? (better is 34...Nd6 35.Nd6 Rc7+/–) 35.Bc5+– Rc6 36.Bf8 Rc4 (36...Rc7 37.Bb4 Qe4+–) 37.Qc4 Kf8 38.Qe6 (38.Qe6 Nc7 39.Qd6 Kf7 40.Qc7 Kg6 41.Rd7+–) 1–0. Lanca,Ivan (2105) – Hosek,Stanislav (1925), Ostrava op–B, 2003.

8.a4 b6 9.h3 Bb7 10.d3 Qc7 11.Nbd2 e5 12.Nh2 (12.a5 ba5 13.Nb3 Bd6+=) 12...Bd6 13.Ng4 Ng4 14.hg4 (14.Bg4 f5 15.Bf3 a6+=) 14...f5 (14...Rfe8!?–/+) 15.gf5+= Rf5 16.e4 Rg5 (16...Rf4!?=) 17.ed5+= Bd5 18.Ne4 (18.Bf3 Bf3 19.Qf3 Rd8+=) 18...Rg6= 19.c4 Bb7 20.Bh5 Rh6 21.Bc1 Re6 22.Qg4 Nf8 23.Qg3 Be7 (23...a6 24.ba6 Ra6 25.Re1=) 24.Bg4 Rg6 25.Qh3 Bc8 26.Bc8 Rc8 27.Nc3 (27.f4 Ne6+=) 27...Bf6 (27...Ne6 28.Nd5 Qd6 29.a5+=) 28.Nd5+/– Qd7 29.Qd7 (29.Nf6?! gf6 30.Qd7 Nd7=) 29...Nd7 30.Bb2 Nf8 (30...Rd8 31.Rfe1+/–) 31.Be5! Kf7 (31...Be5 A deflection 32.Ne7 A double attack) 32.Bf6+– (worse is 32.Nf6 gf6 33.Bf4 Rd8+/–) 32...gf6 33.Rfe1 (33.a5 Rd8+–) 33...Ne6 (better is 33...Rg7+–) 34.a5 Rcg8 (34...Rg7 35.ab6 ab6 36.Ra7 Kf8 37.Rg7 (37.Re6?! Ra7 38.Rf6 Ke8+–) 37...Ng7 38.Nb6+–) 35.g3 (better is 35.ab6 Rg2 36.Kh1+–) 35...h5 (35...Re8+–) 36.ab6 h4 (36...a5 37.ba6 h4 38.a7 hg3 39.a8Q gf2 40.Kf2 Rg2 41.Ke3 Ra8 42.Ra8+–) 37.Ra7 1–0. Sternik,Ryszard – Januszewski,Kazimierz, Olsztyn Poland, 1990.

8.a4 Ne4 9.d3 Nd6 10.c4 b6 11.Nc3 Bf6 12.Qc2 d4 13.ed4 cd4 14.Na2 e5 15.Nb4 Bb7 16.Nd2 Rc8 17.Bf3= Nb8 18.Bb7 Nb7 19.Qd1 Be7 20.Nd5 Nc5 21.Qe2 Bd6 22.Ne4 Ne4 23.Qe4 f5 24.Qe2 f4 25.f3 Rf5 26.a5 ba5 27.Ba3 Ba3 28.Ra3 Nd7 29.Ra5 Qa5 30.Ne7 Kh8 31.Nf5 Qb4 32.Ra1 Qf8 33.g4 g6? 34.Ra7+/– Rd8?? 35.Rd7!+– Rd7 36.Qe5 Kg8 37.Qe6 (37...Kh8 38.Qd7 gf5 39.Qd4 Kg8 40.Qf4 Qc5 41.Kg2 fg4 42.Qg4 Kf8 43.h4+–) 1–0. Schiefelbusch,Dirk (2065) – Kock,Wolfgang (2025), Ruhrgebiet VL2, 2004.

8.a4 Ne8 9.c4 Nd6 10.d3 Bf6 11.Qb3 Bb2 12.Qb2 b6 13.Nbd2 Bb7 14.Ra2 a5 15.Ne5 Qc7 16.Nd7 Qd7 17.Bf3 dc4 18.Bb7 Qb7 19.dc4 Rad8 20.Qc2 Rd7 21.Raa1 Rfd8 22.Rfd1 f6 23.f3 Nf5 24.Nf1 g6 25.Kf2 Qc7 26.Rd7 Qd7 27.Ke2 Kf7 28.g3 h5 29.Rd1 Qd1 30.Qd1 Rd1 31.Kd1 h4 32.Ke2 g5 33.g4 Nd6 ½–½. Barlag,Christoph (2095) – Wille,Thomas (2165), Werther Schloss op–A, 2008.

8.c4 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 b6 12.Nc3 Bb7 13.d4 Qc7 14.Qb3 Ra8 (14...cd4 15.Nd4 Nc5 16.Qc2=+) 15.Bb2 (15.cd5 cd4 16.Nd4 Nc5=+) 15...dc4 (15...Bd6=+) 16.Bc4? (better is 16.Qc4 Qb8 17.Rd1=) 16...Nd5?? (better is 16...Bf3 17.gf3 cd4–/+) 17.Bd5 (17.Nd5!? Bd5 18.Bd5 ed5 19.Qd5+–) 17...ed5+/– 18.dc5 (18.Nd5!? Qd6 19.e4+/–) 18...Nc5 19.Qd1 Bf6 (19...Qd7 20.Qc2=) 20.Nd4 (20.Nd5 Bd5 21.Qd5 Rd8+/–) 20...Bd4 (20...Ne4 21.Qd3=+) 21.ed4 (21.Qd4!? Ne6 A) < 22.Nd5 Qd8 23.Nf6 Qf6 (23...gf6?! 24.Qg4 Kf8 25.Rd1–/+) 24.Qb6 Qb2 25.Qb7 Ra5–+; B) 22.Qg4+=) 21...Ne6 22.Ne2 (22.Qd3 Qc4 23.Qc4 dc4=+) 22...Bc8 (22...Qc4!?–/+) 23.Qb3 Qd6 24.h3 Bb7 25.Ra1 Ra1 26.Ba1 h6 27.Bb2 Qb8 28.Ba3 Qa7 29.Bd6 (29.Qb4!?=) 29...Qa1 30.Kh2 Nd4 31.Nd4 Qd4 32.Qg3 Qf6 (32...f6 33.Qa3 Kh7 34.Qa7=+) 33.Be5 Qg6 (better is 33...Qg5=+) 34.Qc3 (34.Qg6 fg6 35.Bd4 Bc8=) 34...f6 (34...d4!? 35.Qg3 d3 36.Qg6 fg6–/+) 35.Bc7 (35.Bd4 Qe4=) 35...f5 (35...Qb1!?=+) 36.Be5 (better is 36.Qd4+=) 36...Kh7?? (better is 36...d4 37.Qc4 Kh7=) 37.Qc7+– Qe6 (37...Ba8 38.Qa7 d4 39.Qa8 d3+–) 38.Qg7 1–0. Scirocco – fastEddie, Live Game Caissa's Web, 2004.

8.c4 b6 9.cd5 ed5 10.Nc3 Re8 11.Qa4 Bd6 12.d4 Qc7 13.dc5 bc5 (< 13...Qc5 14.Rfd1 Bb7 15.Rac1+/–; < 13...Bc5 14.Rfd1 Bb7 15.Rac1+/–) 14.Rfd1 Nb6 15.Qh4 Bf5 16.a4 Be7 17.a5 Nbd7 18.Qa4 Be4 19.h3 Bf8 20.Ng5 h6 (20...Qe5 21.f4 Qe7 22.Nce4 Ne4 23.Ne4 de4 24.b6+/–) 21.Nge4 (21.Nce4?! de4 22.h4 Bd6=) 21...de4 22.Bc4 Ne5 (22...Rad8 23.Nd5 Nd5 24.Bd5+/–) 23.Nd5+– Nd5 24.Bd5 (24.Rd5?! Nc4 25.Qc4 Rad8+=) 24...Rad8 25.Be4 c4 26.Rd8 Rd8 27.Rc1 Rc8 (27...Bc5 28.Be5 Qe5 29.Qc4+–) 28.b6! ab6 (28...Qb6 29.ab6) 29.ab6 Qd6 30.b7 Rb8 31.Be5 Qe5 32.Qc4 g6 (32...g5 33.Qd4 Qd4 34.ed4+–) 33.Qd5 Qd5 34.Bd5 Bd6 (34...Kg7 35.Rc7 g5 36.f4+–) 35.Rc6 (35...Be5 36.f4+–) 1–0. marekt (2205) – ironkosta (2055), ICC, 2003.

8.c4 dc4 9.Bc4 Nb6 =.

8.d3=+ a6 9.Na3 =.

8.d3=+ a6 9.d4 =+.

8.d3 Qc7 9.c4 dc4 (9...Bd6 10.Qc2=) 10.dc4 b6 11.a4 (11.Qc2 Bb7=) 11...Bb7 12.Nc3 (12.a5 Bd6=) 12...Rad8 (12...Bd6 13.Qc2+=) 13.Qc2= Ng4 14.h3 (14.Ne4 f5 15.Ng3 Bf6=) 14...Bf3 Threatening mate: Qh2 15.hg4 Bb7 (15...Be2 16.Qe2 Ne5 17.Rad1=) 16.f4 h6 17.Bd3 (17.a5 ba5 18.Qa4 Nb6 19.Qa5 Rd2=) 17...Rfe8 (17...Nf6 18.Be2+=) 18.Ne4 (18.Rad1 Bf6=) 18...Nf6 (18...e5!?+=) 19.Be5+= Qc8 (19...Qd7 20.Nf6 Bf6 21.Bh7 Kh8 22.Bf6 gf6 23.Rad1+=) 20.Nf6 gf6 21.Bb2 (21.Bc3 Rd6+=) 21...Qc7 (21...Rd6 22.a5+=) 22.Rad1 e5 (better is 22...Rd7!?+=) 23.fe5+/– fe5 24.Bh7 (24.Bh7 Kh8 25.Rf7 Rd1 26.Qd1+–) 1–0. Kaplan,Julio P – Dietrich,Norbert, La Habana ol (Men) fin–C, 1966.

8.d3 Qc7 9.Nbd2 b6 10.c4 Bb7 11.Qc2 a6 12.a4 Bd6 13.h3 Ne5 14.Ne5 Be5 15.Bf3 Rfd8 16.Rfd1 h6 17.d4 Bd6 (better is 17...cd4!? 18.ed4 Bh2 19.Kh1 Bd6+=) 18.dc5+= Qc5 19.Bd4 Qc7 20.a5 ba5 21.b6 Qc8 22.Qb2 e5 23.Be5 Be5 24.Qe5 Qc5 25.Nb3 Qb6 26.Na5 Re8 27.Qd4 Qc7? (better is 27...Qd4 28.Rd4 Rab8+–) 28.cd5 (28.Nb7?! Qb7 29.cd5 Qa7+–) 28...Bd5 29.Bd5 Rad8 30.e4 (30.Qa4 Nd5 31.Rd5 Re6+–) 30...Ne4 31.Qc4 (31.Be4?! Rd4 32.Rd4 Qc3=) 31...Qc4 32.Bc4 (32.Nc4?! Nc3 33.Bc6 Rd1 34.Rd1 Rc8+–) 1–0. Olcum,Ahmet – Ozturk,Kubra, Izmir TUR, 2011.

8.d3 Qc7 9.Nbd2 b6 10.c4 Bb7 11.Qc2 Rac8 12.Rfd1 Rfe8 13.Rac1 e5 14.Nf1 d4 15.e4 Nf8 16.Ra1 Ne6 17.Bc1 Ra8 18.Ng3 a6 19.a4 ab5 20.cb5 Ra7 21.Nd2 Rea8 22.Nc4 Nd7 23.Bd2 Bc8 24.Rf1 Qb8 25.Bg4 Nc7 (25...Nf6 26.Bf5=) 26.Rfb1 f6? (26...Ne8 27.a5 Nef6 28.Bd7 Nd7 29.Nf5+=) 27.Qb3 (better is 27.a5!?+–) 27...Kh8+/– 28.Nf5 h5?? (better is 28...Bf8+/–) 29.Bh5 (better is 29.Ne7 hg4 30.Nb6+–) 29...Bf8 30.Bg6 Ne6 31.Qd1 1–0. St_Jean,Benoit – Gauthier,Daniel, Championnat Ouvert du Quebec, 2000.

8.d3=+ Ne8 9.c4 Ndf6 10.Qc2 Nc7 11.a4 Bd7 12.Nbd2 Re8 13.Nb3 Rc8 14.Ra2 Na8 15.h3 h6 16.Rd1 a5 17.ba6 ba6+= 18.a5 Bc6 19.Bc3 Rb8 20.Ne5 Qc7 21.Nc6+/– Qc6 22.Bf6 Bf6 23.cd5 Qd5 24.Nc5+– Rec8 25.d4 Nc7 26.Bf3 Qd6 27.Bb7 Rd8 28.Rc1 Qe7 29.Ba6 Na6 30.Na6 Rbc8 31.Qc8 Rc8 32.Rc8 Kh7 33.Nc5 Qa7 34.a6 e5 35.Rb2 (35…Be7 36.Rb7 Bc5 37.Ra7 Ba7 38.Rc7+–) 1–0. Sebald,Ralph – Barbaric,Mirko, Ruhrgebiet–ch U15, 1996.

8.Ne5 Ne5 9.Be5 Nd7 =.

6.Be2 c6

7.0–0 cb5 8.Bb5 Qb6 9.a4 a6 10.Bd4 Qc7 11.Be2 (11.Be5 Qd8 12.Be2 Nc6=) 11...Nc6 12.Bb2 (12.Bf6 Bf6 13.d4 b6+=) 12...Bd7 (12...e5 13.Ba3+=) 13.d4 Bd6 (13...Rfc8 14.Ba3+=) 14.Nbd2 Ng4 The pressure on h2 grows (14...Rfc8 15.c4=) 15.h3 Nf6 16.c4 b6 17.Bd3 (17.cd5 ed5 18.Ba3 Ba3 19.Ra3 Qd6=) 17...h6 (17...Nb4 18.Be2=) 18.Qe2 Nb4 19.cd5 (19.Rfc1 Bc6=) 19...Nd3 20.Qd3 Nd5 21.Rfc1 Qb7 (21...Qd8 22.Ba3 Ba3 23.Qa3+=) 22.Nc4 White intends a5 (22.Ba3 Ba3 23.Qa3 Rfd8+=) 22...Be7 (22...Bb8 23.Nfe5=) 23.Qb3 (23.Ba3 b5 24.Na5 Qb6 25.Be7 Ne7+=) 23...Nb4 (23...b5 24.ab5 Rfb8 25.Nfe5=) 24.Nfe5+= Bc8 (24...Be8 25.Ba3 a5 26.Rab1+=) 25.a5 (25.Ba3 b5 26.ab5 (worse is 26.Bb4 bc4 27.Rc4 a5–/+) 26...ab5 A) 27.Bb4 bc4 28.Qc4 Ra1 29.Ra1 Qb4–+ (worse is 29...Bb4 30.Rb1+–); B) 27.Na5 Ra5 28.Bb4 Ra1 29.Ra1 Bb4 30.Qb4+/–) 25...Qd5 (better is 25...ba5!? 26.Na5 Qd5+=) 26.ab6+– Bb7 The mate threat is Qxg2 27.Nf3 (27.f3 Rfc8+/–) 27...Qf5 28.Ra5 (28.Nfe5 Rfc8+/–) 28...Bd5 29.Rc5?? (29.Nfe5 f6 30.g4 Qe4+/–) 29...Qg6?? (29...Bc5 30.dc5 Nd3–+ (30...Bf3 31.Qb4 Qg6 32.g3+=)) 30.Rc7?? (better is 30.e4 Bc5 31.dc5 Bc4 32.Rc4+–) 30...Bf3–+ Threatening mate: Qxg2 31.g3 Bd5 32.Re7 Qe4 Do you see the mate threat? 33.f3 (33.Kf1 Nd3 34.Rc2 Qh1 35.Ke2–+) 33...Qf3 34.e4 Qb3 35.ed5 ed5 (35...Qg3 36.Kh1 Nd3 37.Rf1 Qh3 38.Kg1 Qg4 39.Kh1 Qh4 40.Kg2 Nb2 41.b7–+) 36.b7 (36.Re3 Nd3 37.Ne5 Qb2 38.Nd3 Qd4–+) 36...Rab8 (better is 36...Qg3 37.Kh1 Qh3 38.Kg1 Qg3 39.Kh1 Qh4 40.Kg1–+) 37.Nd6 (37.Re3 Nd3 38.Ne5 Qb2 39.Nd3 Qd4 40.Kf2–+) 37...Qg3 38.Kf1 Qd6 39.Rcc7 Qf6 0–1. Wooten,John – Wall,Bill, Winston–Salem, NC, 1978.

7.0–0 cb5 8.Bb5 Nc6 9.a3 +=.

7.0–0 cb5 8.Bb5 Nc6 9.Qe2 =.

7.0–0 cb5 8.Bb5 Bd7 =.

7.0–0 Nbd7 8.c4 cb5 9.cb5 b6 (9...a6 10.Nc3=) 10.d4 a6 11.Nc3 ab5 12.Nb5 Ne4 (12...Ba6 13.Qb3=) 13.a4 Ba6 14.Qb3 f5 (14...Bd6 A) worse is 15.Nd6 Be2 (worse is 15...Nd6 16.Ba6 Ra6 17.Ba3+=) 16.Ne4 de4–+; B) 15.Rfc1=) 15.Ba3 (15.Rac1 Bd6+=) 15...Rc8 (15...Ba3 16.Ra3 Qf6 17.Rb1=) 16.Rfc1+= Ba3 17.Qa3 Qf6 Black prepares f4 (17...Rc1 18.Qc1 Qc8 19.Rb1+=) 18.Bd3 (18.Rc8 Rc8 19.Rc1 Rf8+=) 18...f4 19.Rc8 Rc8 20.Be4 de4 21.Nd2 Bb5 22.ab5 Qf5 23.Qd6 Nf6 (23...fe3 A) worse is 24.Qd7 Qf2 25.Kh1 Rf8 26.Qe6 Kh8 27.Qe4 ed2–+ (27...Qd2?! 28.h3+=); B) 24.fe3 Qd5 25.Qe7+/–) 24.Qf4 (24.Qb6 e5+/–) 24...Qb5 (24...Qf4!? 25.ef4 Rc2=) 25.Ne4+/– Ne4 26.Qe4 Qc4 (26...Qd5 27.Qd5 ed5 28.f3+/–) 27.g3 (27.h3 Qc6 28.Qc6 Rc6+/–) 27...b5 (27...Qc6 28.Qe5 Rc7 29.e4+–) 28.Rb1 (better is 28.Ra7!? Kh8 29.Qe5+–) 28...Rf8+/– 29.Qe5 Qa2 Exerts pressure on the backward pawn 30.Rf1 (30.Rb5?? Qf2 31.Kh1 Qf1) 30...b4 31.Qe4 Qc4 32.Qb1 (32.Ra1 Qd5 33.Qd5 ed5+/–) 32...b3+= 33.Rc1 (33.Qb2 Rc8+=) 33...Qe2= 34.Rf1 b2 (better is 34...Qc4=) 35.Qd1?? (better is 35.Qa2+=) 35...Rf2!! 36.Qe2 Re2 (36...Re2 37.Rb1 Rc2 38.Rb2 Rb2–+) 0–1. Abascal Vicente,I – Perez de Villar,I, Barcelona ESP, 2004.

7.0–0 Nbd7 8.c4 Ne8 (8...cb5 9.cb5 a6 10.Nc3=) 9.bc6 bc6 10.Qc2 Bf6 (10...Nd6 11.Na3=) 11.d4+= Rb8 (11...Ba6 12.Nbd2+=) 12.Nbd2 (12.Ba3 Be7+=) 12...h6 (12...Be7!?+=) 13.Ba3+/– White prepares the advance c5 13...Be7 14.Be7 Qe7 15.Rfb1 Nd6 16.Rb8 Nb8 17.c5 (17.Rb1 Ba6+/–) 17...Ne8 (17...Nb5 18.Ne5+/–) 18.Rb1 Nd7 (better is 18...Qc7!?+/–) 19.Qa4+– Ndf6 (19...e5 20.Qc6 Nef6 21.Ba6 Ba6 22.Qa6+–) 20.Ne5 Ne4 (20...Qc7 21.Qc6 Qa5 22.Rd1+–) 21.Ne4 de4 22.Qc6 Nf6 23.Rb8 Qd8 (23...Bd7 24.Rb7 Rd8+–) 24.Ba6 Qa5 (24...Nd7 25.Rc8 (25.Qc8?! Nb8 26.Qd8 Rd8+–; 25.Bc8? Nb8 26.Nf7 Qc8 27.Qc8 Rc8–+) 25...Ne5 26.Qe4+–) 25.Rc8 Qe1 (25...Rc8 26.Qc8 Kh7+–) 26.Bf1 Qa5 27.Nc4 Qa2 28.Rf8 (28.Rf8 Kf8 29.Qc8 Ne8 30.Nd6+–) 1–0. Valverde,Mario (1995) – Hasler,Ueli, CiF, 2006.

7.a4 a5 8.0–0 Qb6 (8...Nbd7 9.d4=) 9.d4 Bd7 (9...Nbd7 10.c4+=) 10.Ne5 (10.Ba3 Ba3 11.Na3 cb5 12.ab5 a4+=) 10...Be8 (10...cb5!? 11.Nd7 Nbd7 12.ab5 Rfc8=) 11.c4+= cb5 (11...dc4 12.Ba3 (worse 12.Bc4 cb5 13.ab5 Bb5=+) 12...Qd8 13.Bc4+=) 12.c5 Qc7 13.ab5 Nbd7 14.Nd3 b6 (14...Nb8 15.Qa4+–) 15.c6 Nb8 16.Nc3 Ne4 17.Ne4 de4 18.Nf4 Bd6 (18...Nc6 19.Qc2 g5 20.Qe4 Nb4+–) 19.d5 (better 19.Ba3+–) 19...g5? (better 19...e5 20.Nh5 f5+–) 20.Nh5+– Bh2 (20...f5 21.Nf6 Rf6 22.Bf6+–) 21.Kh1 Be5 (21...f5 22.Qd4 e5+–) 22.d6! Qd6 (22...Qd6 23.Nf6 Double attack; 22...Bd6 23.Nf6 Deflection) 23.Qd6 Bd6 24.Nf6 Kg7 25.Ne8 (25.Ne8 Kg6 26.Nd6+–) 1–0. DEFFM – GuestXZXP, freechess.org, 2018.

7.a4 c5 8.0–0 Nbd7 9.c4 Re8 10.a5 Qc7 11.Nc3 d4 12.ed4 cd4 13.Nd4 e5 14.Nf5 Bc5 15.a6 b6 16.Re1 e4 17.Nd5 Nd5 18.Ng7 Re5 19.d4 Rg5 20.Ne8 Qf4 21.dc5 e3 22.f3 Rh5 23.g3 Rg5 24.Kh1 Rg3 25.Qd5 Rh3 26.Nf6 Nf6 27.Rg1 Bg4 28.Qa8 Kg7 29.Rg4 1–0. Machete99 – guest161, ICC, 2002.

7.a4 c5 8.c4 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 dc4 12.Bc4 Nbd7 13.d4 Nb6 (13...cd4 14.Qd4 b6 15.Qf4=) 14.Be2+= Qc7 15.Nbd2 Nbd5 16.Qb3 b6 (16...Rd8 17.Rc1+=) 17.Bb2 (17.dc5 Bc5 18.Be5 Bd6+=) 17...Bb7= 18.Ra1 Ra8 19.Ra8 Ba8 20.Qa2 (20.dc5 Bc5 21.Be5 Qd8=) 20...Bb7 21.Qa1 (21.Qc4 Qd8=) 21...h6 (21...Ng4 22.dc5 Bc5 23.h3= (worse 23.Bg7 f6–/+)) 22.Nc4 Bf8 (22...Ng4 23.dc5 Bc5 24.Nfe5+=) 23.Nfe5 (23.Qa7 Nd7+=) 23...Nd7 (23...Nb4 24.Qa7 Nfd5 25.Bg4+=) 24.dc5 Nc5 25.Qa7 (25.Bh5 g6 26.Bf3 Nd3+=) 25...f6 (25...Ne4 26.Bf3 Nd6 27.Bd5 ed5 28.Qb6 Qb6 29.Nb6 Nb5 30.Nd3=) 26.Ng6+= Bd6 27.Nd6 Qd6 28.Bd4 Qc7 (28...Kh7!?+=) 29.Bc5+– bc5 30.Bf3 (30.b6 Qb6 31.Qb8 Kf7+–) 30...c4 (30...Kf7 31.Nf4! Bc8 32.Bh5 Kg8 33.b6+–) 31.b6! Qd7 (31...Qb6 32.Qb6 Combination; 31...Nb6 32.Bb7 Pinning (32.Bb7 Deflection)) 32.Qb8 Kf7 (32...Qc8 33.Qc8 Bc8 34.Bd5 ed5 35.Ne7 Kf7 36.Nd5 Bb7=) 33.Bh5 (33.Bh5 Qc8 34.Qd6+–) 1–0. Anonymous – Anonymous, lichess.org, 2020.

7.a4 c5 8.c4 b6 9.0–0 Bb7 10.d4 a6 11.Nbd2 ab5 (11...Nbd7 12.cd5 Nd5 13.Rc1=) 12.ab5 Nbd7 13.Qc2 cd4 14.Ra8 Qa8 15.Ra1 Qb8 16.ed4 Rc8 17.Ne5 dc4 18.Ndc4 Ne5 19.de5 Nd7 20.Bd3 Bd5 21.Bh7 Kh8 22.Bd3 Qc7?? (better is 22...Bc4 23.Bc4 Ne5+=) 23.Qe2+– Bc4?? (better is 23...Kg8 24.Ne3 Bb7+–) 24.Qh5 (24.Qh5 Kg8 25.Qh7 Kf8 26.Qh8) 1–0. DEFFM – GuestSJWT, freechess.org, 2018.

7.a4 c5 8.c4 Ng4 9.0–0 Qc7 10.h3 Nf6 11.Nc3 d4 (11...Qa5 12.d3+=) 12.ed4+= cd4 13.Nd4 e5 14.Nf3 e4 15.Nd4 (15.Ne1 Be6+=) 15...Qc5 (15...Rd8!? 16.Nd5 Nd5 17.cd5 Qc5+=) 16.Ba3+– Qe5 17.Be7 Qe7 18.d3 e3 19.Qc1 ef2 20.Rf2 Nbd7 (20...Rd8!? 21.Qf4 Qb4+–) 21.Nf5+– Qe6 (better 21...Qb4+–) 22.Ng7?? (better 22.Qg5 g6 23.c5+–) 22...Kg7= 23.c5 Kh8 24.c6 bc6 25.bc6 Ne5 (25...Qc6? 26.Bf3 Qd6 27.Ba8+–) 26.Qh6 (26.d4!? Nc6 27.Bf3+=) 26...Ng6= 27.Raf1 Ba6?? (better 27...Ng8 28.Qh5 f5=+) 28.Rf6+– Qc8 (28...Qb3 29.Ne4 Ne7+–) 29.Ne4 Qd8 30.Ng5 Qd4 31.Kh1 Bd3 (31...Qh4 32.Bh5 Qg5 33.Qg5 Kg7+–) 32.Qh7 1–0. GuestXTMP – Tsarkan, freechess.org, 2019.

7.a4 Bd6 A) 8.Be5 a6 (8...Be5 9.Ne5 a6 10.Nc3 Nbd7 11.Nd7 Bd7=; 8...cb5 9.ab5 Be5 10.Ne5 Nbd7 11.Nd7 Bd7=; 8...b6 9.d4 Ne4 10.Bd6 Qd6 11.Nfd2 Nf6=) 9.ba6 b6 10.a7 Ra7 11.0–0 Ba6+=; B) 8.d4 a6 (8...Nbd7 9.0–0 Qc7 10.Nbd2 cb5 11.ab5 Ne4=) 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5+=; C) 8.Ne5 Nfd7 (8...Ne4 9.0–0 Nd7 10.f4 f6 11.Nd7 Bd7=; 8...Nbd7 9.f4 Qc7 10.Nd7 Nd7 11.0–0 e5=; 8...Qc7 9.f4 Nbd7 10.Nd7 Nd7 11.0–0 e5=) 9.Nd7 Nd7 10.0–0 e5 11.d4 Re8=; D) 8.Nc3 a6 (8...e5 9.0–0 a6 10.d4 e4 11.Ne5 Qc7+=; 8...c5 9.d4 Nbd7 10.0–0 Qc7 11.a5 cd4=; 8...Qc7 9.bc6 bc6 10.Ba3 Ne4 11.Bd6 Qd6+=) 9.0–0 e5 10.Ng5 e4 11.f4 h6–/+; E) 8.0–0 b6 (8...a6 9.Ne5 ab5 10.ab5 Ra1 11.Ba1 cb5=; 8...Nbd7 9.d4 Qc7 10.Nbd2 Ng4 11.h3 Nh2=) 9.Be5 a6 10.Bd6 Qd6 11.bc6 e5=.

7.a4 Ne4 8.0–0 a6 9.d3 Bf6 10.Bf6 Nf6 11.Nbd2 =.

7.a4 Ne4 8.0–0 Nd7 9.d4 c5 10.c4 Ndf6 11.Nbd2 a6 12.Qc2 Bd7 13.Ne5 Nd2+= 14.Qd2 Ne4 15.Qc2 Nf6 16.Rfc1 dc4 17.Bc4 Qb6 18.a5 Qd8 19.b6 Rc8 20.Qe2 Bc6 21.dc5+– Ne4 22.Nc6 Rc6 23.Rd1 Qc8 24.Qe1 Nc5 25.Rac1?? Na4–/+ 26.Be2? Nb2–+ 27.Rc6 Qc6 28.Bf3 Qa4 29.Rd4 Qb5 30.Bb7 Bc5 31.Rg4 Rd8 32.Bf3 Nd3 33.Qa1 Qb2 34.Qb2=+ Nb2 35.Be2 f5 36.Rh4 Rd2 37.Ba6= Rd1 38.Bf1+= Ra1? 39.b7+– Ba7 40.a6 Nd3?? 41.Rd4+– Nc1 42.Rd8 Kf7 43.g3 Ne2 44.Kg2 Ra6 45.Ra8 (45...Kf6 46.Be2+–) 1–0. Majdziuk,B – Swiecik,I, Poland, 1978.

7.a4 Ne4 8.0–0 Bf6 9.d4 b6 10.Nbd2 Bb7 11.Ne4 de4 12.Nd2 c5 13.c3 Nd7 (13...cd4 14.cd4 Be7 15.Qc2+=) 14.Qb1+/– cd4 15.cd4 e5 (15...Be7 16.Ne4 Rc8 17.Qd3+/–) 16.Ne4+– ed4 17.Nf6 Nf6 18.Bd4 Rc8 (18...Ne4 19.Qb4+–) 19.Rc1 Qe7 20.a5 Be4 (20...Ne4 21.Rc8 Rc8 22.ab6 ab6 23.Bd3+– (worse is 23.Bb6 Qf6 24.Qf1 Qb6–/+)) 21.Qb2 Rc1 22.Rc1 ba5 (22...Re8 23.ab6 ab6 24.Bb6+–) 23.Bc5 Qd8 24.Bf8 Qf8 (24...Kf8 25.Qa3 Ke8 26.Qc5+–) 25.Rc7 Qa8 (25...Bf5 26.Ra7 Qb8 27.b6+–) 26.Qc3 Bf5 27.Qa5 h6 (27...Qe4+–) 28.b6 Qe4 (28...Be4 29.Qa7 Qf8+–) 29.ba7 (29.Qa7 Qb1 30.Bf1 Bd3=) 29...Qb1 30.Bf1 Bd3 31.a8Q Kh7 32.Qa1 Qa1 33.Qa1 Bf1 34.Qb1 Kh8 35.Kf1 h5 (35...Ne8 36.Qb8 Kg8 37.Qe8 Kh7 38.Qf7 h5 39.Qg7) 36.Qf5 (36.Rc8 Ng8 37.Qf5 g5 38.Qf7 g4 39.Qg8) 36...Ng8 (36...g5 37.Qf6 Kh7 38.Qf7 Kh6 39.Qe6) 37.Qf7 Ne7 38.Qe7 h4 (38...Kh7 39.Qg7) 39.Qg7 1–0. pcmvr (2865) – jjrizzo (2390), net–chess.com, 2009.

7.a4 Re8 8.0–0 cb5 9.ab5 Nbd7 10.d3 Qc7 11.Nbd2 b6 (11...e5 12.c4=) 12.e4 (12.d4 Bb7+=) 12...de4 13.Ne4 Bb7 14.Nf6 Bf6 15.d4 e5 16.de5 Ne5 17.Ne5 Be5 18.Be5 Qe5 19.Re1 Rad8 20.Qc1 Qd5 (better is 20...Qe4!? 21.Bf1 Qe1 22.Qe1 Re1 23.Re1 Kf8+=) 21.Bf3+/– Re1 22.Qe1 Qd7 23.Ra7 Re8?? (better is 23...Qe8 24.Be2 Rd7+/–) 24.Qf1+– Rb8 (24...Qd2 25.Bb7 (25.Rb7?! g5+/–) 25...h6 26.Ra1 Qc2 27.Bd5+–) 25.Bb7 Rd8 (25...g6 26.Qd3 Qe7 27.Qe4+–) 26.Ra8 Ra8 27.Ba8 Qd2 28.Be4 Qa5 29.Qd1 g6 30.Bd3 (30.Bc6 Qa4+–) 30...Qa8 31.h3 Qd8 32.Qf3 Qd7 33.Qc6 Qa7 34.c4 Kg7 35.c5! (35.c5 bc5 36.b6+–) 1–0. Czernek,Tymon – Cwieka,Konrad, Mistrzostwa Polski Mlodzikow Poland, 2014.

7.a4 Re8 8.c4 Nbd7 (8...dc4 9.Bc4 a6 10.0–0=) 9.d4 e5 (9...dc4 10.bc6 bc6 11.Bc4=) 10.0–0 (better 10.de5!? Ne4 11.cd5 Qa5 12.Nfd2 cd5 13.0–0+–) 10...e4= 11.Nfd2 (11.Ne5 Bd6=) 11...Nf8 (11...cb5 12.ab5 dc4 13.Nc4=) 12.cd5 (12.Nc3 a6=) 12...Nd5 (better 12...cd5!? 13.Nc3 Be6=) 13.Ne4+– 1–0. GuestYXWG – reimari, freechess.org, 2016.

7.a4 h6 8.0–0 a6 9.c4 Bd7 10.Ne5 cb5 (10...dc4 11.ba6 Na6 12.Bc4=) 11.ab5+= a5 (11...Bd6 12.d4+=) 12.Nc3 dc4 13.Bc4 b6 (13...Qc7 14.f4+=) 14.d4 Bd6 15.Qf3 Ra7 16.Rfc1 Be5 (16...Qc7 17.Be2 Be5 18.de5 Qe5 19.Na4+–) 17.de5+– Nh7 18.Ba3 Re8 19.Bd6 Ng5 (19...Bc8 20.Bd3+– (worse 20.Bb8 Bb7+=)) 20.Qg4 Qc8 (20...Nh7 21.Ra4+–) 21.h4 (21.Qd4 Qd8+–) 21...Nh7 22.Bd3 g6? (better 22...Qd8+–) 23.h5 g5 24.Qe4 f5 (24...Nf8 25.Bf8 Kf8+–) 25.ef6! Nf6 (25...Nf6 26.Qg6 Mate attack) 26.Qg6 Kh8 27.Qf6 Kg8 28.Qg6 (28.Qg6 Kh8 29.Be5) 1–0. DEFFM – GuestHRGC, freechess.org, 2018.

7.Nc3 cb5 8.Bb5 a6 +=.

7.c4 a6 8.a4 =.

7.c4 cb5 8.cb5 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Nc3 Nbd7 13.0–0 Nc5 14.Qc2 Nce4 15.Qa4 Qa4= 16.Na4 Bb4 17.d3+= Nc5 18.Nb6 Bd7? 19.Rb1 Ba5+= 20.Nd7 Ncd7 21.Rc1 h6 22.Bc3 Bc3= 23.Rc3 Nb6? 24.Rc7+/– Rb8 25.Nd2 Ne8= 26.Rc2 Rc8 27.Rc8+= Nc8 28.Nb3 Ned6 ½–½. algernon (2290) – purplepeace (2125), net–chess.com, 2005.

7.d4 cb5–/+ 8.Bb5?? (8.0–0 a6 9.Nbd2–/+) 8...a6 (better is 8...Qa5 9.Nc3 Ne4–+) 9.Be2 (9.Bd3 Nc6+=) 9...Qb6 (9...Nc6 10.0–0+=) 10.Bc3 (10.Qc1 Qa5 11.Qd2 Qc7+=) 10...Ne4 (10...Qc7 11.0–0+=) 11.0–0 Nc6 (better is 11...Bd7 12.Bd3 Rc8 13.Be4 de4+=) 12.Nbd2?? (better is 12.Bd3+=) 12...Nc3–+ 13.Qe1 Nb4 (13...Ba3 14.Bd3 Bb2 15.Rb1–+) 14.Bd1 (14.Nb1 Ne2 (14...Nca2?! 15.Qd2–+) 15.Qe2 Qb5–+) 14...Nd1 (better is 14...Nba2 15.Ne5–+) 15.Qd1 Qc6 (15...Qc7 16.a3 Nc6 17.c4–+) 16.Ne5? (16.a3 Qc2 17.ab4 Qd1 18.Rfd1 Bb4 19.Rdb1–+) 16...Qc2 17.Qc2 Nc2 18.Rac1 Na3 19.Nb3 f6 20.Nf3 Nc4 21.h3 b5 22.Na5 Na5 23.Nd2 Nc4 24.Nf3 e5 25.de5 Ne5 26.Ne5 fe5 27.Rfd1 Be6 28.Rc7 Rf7 29.Rcc1 Rd8 30.Rc6 Bc8 31.Rdc1 Rff8 (31...Rff8 32.Rc7 Bd6–+; 31...Bb7 32.Rc7 Bd6 33.R7c3–+) 0–1. makaveli1982 – ChessGERjunior, internet, 2007.

7.a4 a6

8.0–0 b6 9.Na3 Bb7 10.bc6 Bc6 11.Nb1 Bb7 =.

8.0–0 c5 9.c4 a5 10.Qc2 (10.d4 b6+=) 10...b6 11.Ng5 (11.d4 Bb7+=) 11...g6 (11...Nbd7 12.cd5 ed5 13.Bg4=) 12.d4 (12.Nc3 d4 13.Nd1 e5+=) 12...Nbd7 13.Nd2 (13.dc5 Nc5 14.Rd1 Bb7+=) 13...Bb7 (13...cd4 14.Bd4 e5 15.Bc3=) 14.f4 (14.Ngf3 cd4 15.Bd4 Bd6+=) 14...dc4 (14...cd4 15.Bd4 Rc8 16.Rac1=) 15.Nc4+= (worse 15.Qc4 Nd5 16.Qd3 cd4 17.ed4 Bg5 18.fg5 Qg5–/+) 15...Nd5 16.Nf3 Nb4 17.Qc3 Bf6 (17...Nd5 18.Qd2+=) 18.Nfe5 (18.Rad1 Bd5+=) 18...cd4 19.ed4 Nd5 (19...Be7 20.Bf3 Ne5 21.fe5+=) 20.Qg3 (20.Qh3 Be7+=) 20...Bh4 (20...Be7 21.Ba3+=) 21.Qh3 Bf6 (21...Be7!?+=) 22.Nd6+– Qc7 23.Ba3 Be7?? (better 23...Ne5 24.fe5 Be7+–) 24.Rac1+– Qb8 (24...Nc5 25.dc5 (25.Bc5?! Bd6 26.Ba3 Qe7 27.Bd6 Qd6=) 25...bc5 26.Ndf7 (worse 26.Nb7 Qb7 27.f5 ef5+–) 26...Rf7 27.Nf7 Kf7 28.Qh7 Ke8 29.Qg6 Kd7 30.f5+–) 25.Nd7 (25.Nd7 Qd8 26.Nf8 (26.Nb7?! Qd7 27.Nc5 bc5 28.dc5 Rac8+–) 26...Qf8 27.Nc4+–) 1–0. GuestMQJQ – GuestBVGY, freechess.org, 2020.

8.0–0 Bd6 9.Ne5 ab5 10.ab5 Ra1 11.Ba1 cb5 +=.

8.0–0 Bd7 9.Ne5 ab5=+ 10.ab5 Ra1 11.Ba1 cb5 12.Nd7 (12.Nc3 b4 13.Nb5 Bb5 14.Bb5 Qc7=+) 12...Qd7 13.Nc3 (13.Bf6 Bf6 14.d4 Na6=+) 13...b4 14.Nb5 Nc6 15.Bb2 Ra8 16.f3 (16.Nd4 Ra2 17.Bd3 Rb2=+) 16...Na5 17.Ba1 Nc4 18.Nd4 b5 (18...b6 19.Nb3–/+) 19.Nb3 Na3 (19...Qc7 20.f4–/+) 20.Bd3 Qc7 21.f4 Ne4 (21...Nc4 22.Qf3=+) 22.Rf3 (22.Qg4 g6=+) 22...f5 (22...Bf6 23.Bf6 Nf6 24.Rh3–/+) 23.Nd4 (23.Rh3 Bd6=+) 23...Qd7 24.Nb3 Nc4 (24...Bf6 25.Bf6 Nf6 26.Be2–/+) 25.Rh3 (25.Be4 de4 26.Rh3 g6=+) 25...g6 (25...Ncd2 26.Qh5 Ra1 27.Na1=+) 26.Bd4 1–0. DEFFM – GuestKFTM, freechess.org, 2018.

8.0–0 Nbd7 9.Na3 ab5 10.ab5 e5 11.d4 e4 =.

8.Na3 Nbd7 (8...ab5 9.ab5 Nbd7 10.0–0 e5 11.d4 e4=; 8...Qa5 9.c4 Ne4 10.0–0 b6 11.Qc2 Bb4=; 8...b6 9.0–0 Bb7 10.d3 Nbd7 11.Nd4 c5=) 9.0–0 ab5 10.ab5 e5 11.d4 e4 =.

8.Nc3 Bd7 9.Ne5 Be8 10.0–0 ab5 11.ab5 Ra1 12.Qa1 cb5 (12...Qc7 13.Nd3=) 13.Nb5 Nc6 14.f4 Ne5 15.Be5 Bc6 16.Rb1 Ne8 17.Nd4 Bf6 18.Nc6 bc6 19.Rb7 Nd6 (19...Be5 20.fe5 f6 21.Bg4=) 20.Bf6+= Qf6 21.Qf6 gf6 22.Rd7 Ne4 23.d3 Nc3 24.Bh5 c5 25.Rc7 Na4 26.Kf2 f5 27.Ke2 Nb6 (27...Kg7!?+/–) 28.Rc5+– Rc8 (28...Nd7 29.Ra5+–) 29.Rc8 Nc8 30.c4 dc4 31.dc4 Kf8 32.Kd3 Ke7 33.Kd4 f6 34.Kc5 Nd6 35.Bf3 Kd7 36.Kb4 Kc7 37.c5 Nc8 38.Kc4 Ne7 39.Kd4 Nc8 40.h3 h6 41.e4 fe4 42.Be4 Na7 (42...Ne7 43.g3+–) 43.g4 Kd7 44.h4 Nb5 45.Kc4 Nc7 46.g5 fg5 47.fg5 hg5 48.hg5 Ke7 49.Kd4 Na6 (49...e5 50.Kc4 Ke6+–) 50.Kc4 (50.g6 Kf6+–) 50...Nc7 51.c6 Kd6 52.g6 Ne8 53.Kb5 Kc7 54.Kc5 Ng7 55.Bg2 Ne8 56.Bh3 1–0. Lanca,Ivan (2105) – Perik,Alois (1855), Ostrava op–B, 2003.

8.c4 (--> 5.Nf3 c6 6.a4 0–0 7.c4 a6 8.Be2).

8.Ne5 Ne4 9.0–0 f6 10.Nf3 ab5 11.ab5 Ra1 +=.

8.0–0 ab5 9.ab5 Ra1

10.Ba1 cb5 11.Bb5 Qa5 12.Nc3 Bd7 13.Qb1 Nc6 14.Be2 Rb8 15.Nb5 h6 16.h3 Ne4 17.c4 Ra8 18.cd5 ed5 19.d3 Nf6 20.Bc3 Qa2 21.Nbd4 Ra3 22.Qa2 Ra2 23.Rb1 Nd4 24.Nd4 Bc5 25.Bf3 b6 26.Ne2 Bf5 27.Rd1 Rc2 28.Be5 b5 29.Nd4 Bd4 30.Bd4 b4 31.g4 Bg6 32.Bf6 gf6 33.Bd5 Rc3 34.e4 b3 35.Kf1 b2 36.Ba2 h5 (36...Rc2 37.Bb1 Rc8 38.Ke2+–) 37.Ke1 Rc2 38.Bb1 Rc8 39.Kd2 Rd8 (better is 39...Kg7!?+/–) 40.Kc2+– Kg7 41.f4 (41.Kb2?! hg4 42.Rh1 f5+=) 41...Rb8 (41...hg4 42.hg4 Rh8 43.Kb2 Rh2 44.Bc2+–) 42.f5 hg4 (42...Bh7 43.gh5 Kh6 44.Ba2 Kh5 45.Bb3+–) 43.fg6 gh3 44.gf7 Kf7 45.Rh1 Rh8 46.Ba2 (46.Kb2?! Kg6+–) 46...Kg6 (46...Ke7 47.Kb2 Kd6 48.d4+–) 47.Rh2 f5 48.Be6 fe4 49.de4 1–0. pcmvr – pierred (2845), net–chess.com, 2015.

10.Ba1 cb5 11.Bb5 Nc6 12.c4 dc4 (12...Na7!?+=) 13.Bc4= Bd7 14.d4 Na5 (14...Qc7 15.Nc3=) 15.Bd3 Qb6 (15...Nc6 16.Nc3+=) 16.Nbd2 (16.Nc3 Bd6+=) 16...Rc8 (16...Nd5 17.Qe2=) 17.Ne5+= Be8 18.Qf3 (18.Qe2 Nd5=) 18...Qb4 (18...Bb5 19.Rb1 Bd3 20.Nd3= (20.Rb6?? Rc1 21.Qd1 Rd1 22.Nf1 Rf1)) 19.Ne4 (19.Qe2!?+=) 19...Ne4= 20.Qe4 f5 21.Qf3 (21.Qf4!?=) 21...Nb3–/+ 22.Bc4 (better is 22.Rd1!?–/+) 22...Rc4–+ 23.Nc4 Qc4 24.Qb7 Bb5 25.Re1 Bf6 (25...Kf7 26.h3–+) 26.h3–/+ h6 27.Bb2 Kh7 28.g4?? (better is 28.Ba3–/+) 28...Bc6–+ 29.Qc7 (29.Qb6 Qd5 30.e4 fe4–+) 29...Qd5 30.e4 fe4 31.Qg3 (31.Re3 Nd4 32.Bd4 Bd4–+) 31...Nd2 32.Re3 (32.Rc1 Nf3 33.Kh1 Bg5–+) 32...Bg5 33.h4 (33.Kh1 Be3 34.fe3 Qb3–+) 33...Be3 34.fe3 Qb5 (34...Qb5 35.Qf2 Qb2–+) 0–1. Djurisic,Dusan (1900) – Vlaisavljevic,Milan (2020), Beograd SER, City Team Ch, 2014.

10.Ba1 cb5 11.Bb5 Nc6 12.Qe2 Qd6=.

10.Ba1 cb5 11.Bb5 Nc6 12.Be2 Qc7 (12...Bd6 13.Nc3=) 13.d4 (13.Nc3 e5=) 13...Ne4 (13...Bd7 14.c4=) 14.Nbd2 Ng5 (14...Rd8 15.Ne4 de4 16.Nd2=) 15.Ng5 Bg5 16.c4 b6 (16...Be7 17.Bc3=) 17.Nf3 Bf6 (17...Be7 18.cd5 ed5 19.Qb1+=) 18.cd5 ed5 19.Qc2 Bb7 20.Rc1 Rc8 21.Bd3 g6 (21...Qd8 22.Qb1 h6 23.Bf5+–) 22.Qb1 (22.Qb3+–) 22...Qd6 (22...Qd8!?+=) 23.Qb6+– Qe7 (23...Qa3 24.Bb2 Qd3 25.Qb7+–) 24.Ne5! Ne5 (24...Ne5 25.Rc8 Double attack (25.Rc8 Decoy); 24...Be5 25.de5 Decoy) 25.Rc8+– Bc8 26.de5 Bg5 27.Bd4 Qa3 28.Qb8 Qd3 (better 28...Qc1 29.Bf1 Be7+–) 29.Qc8 Kg7 30.h4! Bh4 (30...Be7 31.Qe8 Qb1 32.Kh2 Ba3+–) 31.e6 Bf6 (31...Kh6 32.ef7 Qd1 33.Kh2 Be7 34.f8Q Bf8 35.Qf8 Kh5 36.f3 Qd2 37.Qf4 Qf2 38.Bf6 Qg2 39.Kg2 d4 40.Qg5) 32.e7 Qd1 33.Kh2 Qh5 34.Qh3 Be5 (34...Bd4 35.ed4 Qe2 36.Qe3 Qh5 37.Kg3+–) 35.g3 Qf3 (35...Bd4 36.Qh5 Bf6 (36...gh5?? 37.ed4 Kg6 38.e8Q+–) 37.e8N Kf8+–) 36.Be5 f6 37.Kg1 fe5 38.e8Q Qd1 39.Kg2 e4 (39...Qh1 40.Kh1 h5 41.Qhe6 d4 42.Q6g6) 40.Qe7 Kg8 41.Qhh7 1–0. onur604 (2320) – utongski (1950), lichess.org, 2020.

10.Ba1 cb5 11.Bb5 Bd7 =.

10.Ba1 Bd7 11.Nc3 Bb4 12.Ne5 (12.Qb1 Qe7+=) 12...Bc3 13.Bc3 cb5 (13...Ne4!?+=) 14.Qa1+– Nc6 (14...Ne4 15.Bb4 Re8 16.f3+–) 15.Nd7 Qd7 16.Bf6 gf6 17.Qf6 Na5 (17...b4!?+–) 18.Qg5 (18.f4!? Qd8 19.Qh6 f6+–) 18...Kh8+– 19.Ra1 (19.Qh6 Qe7 20.Bb5 Nc4 21.Bc4 dc4+–) 19...Nc4 20.Qf6 Kg8 21.Bd3 (better 21.d3 Nd6 22.d4+–) 21...Qd8? (better 21...Rc8+–) 22.Qh6+– f6 1–0. GuestGHVY – PaulFang, freechess.org, 2020.

7.a4 cb5

8.ab5 a5 9.0–0 Nbd7 10.d4 b6 11.Ba3 Re8 =.

8.ab5 a5 9.0–0 Nbd7 10.d4 b6 11.c4 Bb7 12.Nbd2 Bb4 (12...dc4 13.Nc4 Qb8 14.Ba3 Ba3 15.Ra3=) 13.Qb3 (13.Ba3 Ba3 14.Ra3 dc4 15.Nc4 Qe7+=) 13...Rc8 (13...dc4 14.Nc4 Ne4 15.Rfc1=) 14.Rfd1 (14.Rfc1 Ne4 15.Ne4 de4+=) 14...dc4= 15.Nc4 (15.Bc4 Ne4=) 15...Ne4 16.Rdc1 Bd5 (16...Ndf6 17.Nfe5+=) 17.Ba3 Qe7 (17...Ba3 18.Qa3 Qf6 19.Bd3=) 18.Qb2 (18.Bb4 ab4 19.Qd3 Nc3=) 18...Ba3 19.Ra3 Rc7 20.Ra4 (20.Bd3 Rfc8 21.Be4 Be4=) 20...Rfc8 21.Rc2 Qd8 22.Bd3 (22.Qa1!?=+) 22...Ndc5 23.dc5 Nc5 24.Ra3 Nd3 25.Rd3 Rc4 26.Rc4 Rc4 27.Nd2 Rb4 28.Qc2 Qf8 (28...Qe8 29.Rc3 Bb7 30.Rc7–/+) 29.Rc3 Bb7 (29...Rb5? 30.Rc8 Rc5 31.Rf8 Kf8 32.Qb1+– (32.Qh7 Rc1 33.Nf1 Bc4 34.Qh8 Ke7=)) 30.Rc7 Qb8 31.Re7 h6 (worse 31...Rb5 32.Qc7 Qf8 33.Qb7+–) 32.Qd3 Bd5 33.e4 Kf8 34.Rd7 Ke8 (34...Qc8 35.Rd6 Qc7–+) 35.ed5 (better 35.Qf3!? Kd7 36.Qf7 Kd6 37.ed5–+) 35...Kd7–+ 36.de6 Ke6 37.Qe3 (37.Nf3 Qd6 38.Qc2 Qc5 39.Qe2 Kf6–+) 37...Kd7 (37...Qe5 38.Qb6 Kf5 39.h3–+) 38.Qf3 (38.Nf1 Qd6–+ (worse 38...Rb5 39.Qd3 Kc6 40.Qf3 Kd6 41.Qf7–+)) 38...Ke7 39.Qc6 (39.Qc3–+) 39…Qd6 (39...Qd6 40.h3 Qd2 41.Qb6 Qd1 42.Kh2 Qd6 43.Qd6 Kd6–+) 0–1. DEFFM – GuestLMTF, freechess.org, 2018.

8.ab5 a6 9.0–0 Nbd7 10.Na3 b6 11.Nd4 ab5? (better is 11...Bc5=) 12.Nc6+– (12.Nab5?! Ra1 13.Qa1 Bb7+=; 12.Ndb5?! Ba6=; 12.Bb5?! Bb7=) 12...Qe8 13.Nb5 (13.Bb5?! Bb7+=; 13.Ne7?! Qe7 14.Nb5 Ra1 15.Qa1 Qb4+/–) 13...Ra1 14.Qa1 (14.Ba1?! Nc5 15.Ne7 Qe7+/–) 14...Bc5?? (better is 14...Nc5 15.Ne7 Qe7+–) 15.Nc7 (15.Nc7 Bb7 16.Ne8 Re8 17.Bf6 Nf6 18.Ne5+–) 1–0. guest88 – guest1692, ICC, 2003.

8.ab5 b6 9.0–0 Bb7 10.d3 Nbd7 (10...a6 11.Na3=) 11.d4+= Qc7 (11...Nb8 12.Bd3+=) 12.Nbd2 (12.Ba3 Ba3 13.Ra3 Nb8+=) 12...Bd6 (12...Ne4 13.Bd3=) 13.h3 (13.Ba3 Ne4+=) 13...Rfc8 (13...Nb8 14.Ba3=) 14.c4 (14.Bd3 Nb8+=) 14...Ne4 (14...dc4 15.Rc1=) 15.Ne4 de4 16.Nd2 Nf6 17.Qb3 1–0. GuestPRVN – GuestCNQP, freechess.org, 2017.

8.ab5 Bd7 9.0–0 a5 10.Be5 a4 11.c4 Qa5 =.

8.ab5 Bd7 9.0–0 a6 10.c4 (10.Bd4 Ne4=) 10...dc4 (10...Bd6 11.d3=) 11.Bc4 a5 (11...Nd5 12.Nc3=) 12.Qc2. pcmvr (2560) – alexp (2110), net–chess.com, 2006.

8.ab5 Bd7 9.0–0 Qb6 10.Bd4 Bc5 11.Bf6 gf6 12.c4 (12.Nc3 Bb4+=) 12...dc4= 13.Nc3 Bb5 (13...Bb4 14.Bc4 Rc8 15.Qe2=) 14.Rb1+= a6 15.Bc4 Nd7 (15...Rc8 16.Nb5 ab5 17.Rb5+–) 16.Nb5+– ab5 17.Bb5 Qc7 18.d4 Bd6 19.Qb3 (19.Rc1 Qd8+–) 19...Rab8 (19...Ra3 20.Qb2+–) 20.Rfc1 Qd8 21.e4 (21.Ra1 Kg7+–) 21...Bf4 (21...Qe7 22.Bd3+–) 22.Rc3 (22.Rd1 Qe7+–) 22...Qe7 23.Kh1 (23.g3 Bd6+–) 23...Rbc8 (23...Rfd8 24.Bd3+–) 24.g3 (24.Rc8 Rc8 25.Bd3 Rc7+–) 24...Rc3 25.Qc3 Bd6 26.Bd3 (26.e5 fe5 27.de5+–) 26...Nb8 (26...Rb8!?+–) 27.Qb3 Nc6 (27...Nd7 28.Qb7 Rb8 29.Qc6+–) 28.Qb7 Qb7 (28...Nb4 29.Qe7 Be7 30.Be2+–) 29.Rb7 Rb8 30.Rb8 Bb8 31.d5 (31.Kg2 Kf8+–) 31...ed5 (31...Ne5 32.Ne5 fe5 33.de6 fe6 34.Kg2+–) 32.ed5 Ne5 33.Be4 (33.Ne1 Bd6 34.Bb5 Kf8+–) 33...Nf3 34.Bf3 Kf8 (34...f5 35.Be2+–) 35.Kg2 (35.Be4 h6+–) 35...Ke7 (35...f5 36.Be2+–) 36.Be4 h6 37.f4 (37.Kh3 Ba7+–) 37...Kd6 38.Kf2 (38.f5 Ba7+–) 38...Ba7 39.Ke2 f5 40.Bf3 f6 (40...Bg1 41.Kf1 Ba7 42.Kg2+–) 41.Bg2 (41.Ke1 Bd4+–) 41...Kc5 42.Kd3 Kd6 43.Bf3 (43.Bh1!?+–) 43...Bg1+– 44.Ke2 Bh2?? (44...Ba7 45.Kf1 Bd4+–) 45.Kf2+– h5 (45...Kd7 46.Kg2 Bg3 47.Kg3+–) 46.Kg2 (worse 46.Bh5 Kd5 47.Bf3 Ke6+–) 46...h4 47.Kh2 hg3 48.Kg3 Kc5 49.Bh1 (49.Kh4 Kd6+–) 49...Kd6 50.Kh4 Kc5 (50...Ke7 51.Bf3 Kf7 52.Kh5+–) 51.Kh5 Kd6 52.Kg6 Ke7 53.Kf5 (53.Kf5 Kd6 54.Kf6+–) 1–0. DEFFM – SuperGrossChess, freechess.org, 2018.

8.ab5 Bd7 9.c4 dc4 10.Bc4 Ne4 11.0–0 (11.Nc3 Nd6=) 11...Nd6 12.Qb3 a6 13.Nc3 Qb6 14.Na4 Qd8 15.Nc5 Nc4 16.Nd7 Nd7 17.Qc4 ab5 18.Ra8 Qa8 19.Qb5 Nc5 20.Ra1 Qc8 21.d4 Ne4 22.Ne5 Rd8 23.Nc4 Nd6 24.Nd6 Bd6 25.Ra7 Rd7 26.e4 f6 27.g3 Qc6 28.Qc6 bc6 29.Rd7 (29.Rd7 Bf8 30.Rc7+–) 1–0. vik – smugo, internet, 2001.

7.a4 b6

8.0–0 a6 9.Ne5 Qd6 10.f4 Bb7 11.Nc3 Rc8 =.

8.0–0 Bb7 9.Nc3 a6 10.Ne5 Bd6 11.f4 Qc7 =.

8.0–0 Bb7 9.d3 c5 (9...a6 10.c4=) 10.Nbd2 (10.Na3 a6=) 10...h6 (10...a6 11.c4=) 11.c4 dc4 (11...a6 12.d4=) 12.Nc4 Nbd7 (12...a6 13.Nfe5=) 13.Nfd2 White intends a5 (13.a5 a6 14.ba6 Ra6+=) 13...Qc7 (13...a6 14.Qb3=) 14.a5+= Bd5 (14...ba5 15.Ra5 a6 16.ba6 Ba6 17.Bf3+=) 15.f4 (15.Qc2 Rfd8+=) 15...Rab8 (15...ba5 16.Ra5 (worse is 16.Na5 Rfb8+=) 16...Nb6 17.Be5+=) 16.Qc2 Rfd8 17.e4 White prepares f5 (17.Bf3 ba5 18.Ra5 Rb7+=) 17...Bb7 (17...Ba8 18.Rf2+/–) 18.f5 (better is 18.a6 Ba8 19.Ne5+=) 18...Nf8? (better is 18...ef5 19.Rf5 Bc8+/–) 19.Be5+– Qc8? (better is 19...Qd7+–) 20.ab6 (20.Bb8?! Qb8 21.e5 Nd5+–) 20...Ra8 21.ba7 N8d7 (21...N6d7 22.Nd6 Qc7 23.b6 (worse is 23.Nb7 Qb7 24.Nc4 Ra7+–) 23...Qb6 24.N2c4+–) 22.Bc3 (22.Bg3 ef5 23.Rf5 Re8+–) 22...ef5 23.Rf5 Nf8 (23...Rf8 24.b6+–) 24.Nb6 Qc7 (24...Qe6 25.Na8 Ra8 26.Nc4+–) 25.Na8 Ba8 26.Nc4 Ne6 27.b6 Qb7 (27...Qd7 28.Qa4 Qc8 29.Ne5+–) 28.Qb2 Rd7 (28...Qd7 29.Na5 Bb7 30.Nb7 Qb7 31.Qa2+–) 29.Na5 Qc8 30.Bf3 (better is 30.b7 Bb7 31.Nb7 Qa8+–) 30...Nd4 (30...Nd8 31.Qb5 Kh7 32.Nb3+–) 31.Bd4 Rd4 (31...cd4 32.Rb5 Kh7+–) 32.b7 Bb7 33.Qb7 Rd8 34.Qe7 (34.Qe7 Re8 35.Qc5 Qc5 36.Rc5+–) 1–0. pcmvr (2110) – guerino (2100), net–chess.com, 2006.

8.0–0 Bb7 9.d4 a6 =.

8.0–0 c5 9.a5 (9.c4 a6=) 9...ba5 10.Bc3 Bb7 (10...a6 11.Ba5 Qd6 12.Na3=) 11.Ba5 Qc8 (11...Qd6 12.Nc3=) 12.c4 Nbd7 (12...a6 13.Nc3=) 13.Nc3 (13.cd5 ed5 14.d4 a6=) 13...Nb6 (13...dc4 14.Bc4 Qb8 15.d3=) 14.d3 Rd8 Black intends d4 15.Qc2 d4 (15...dc4 16.dc4 Qc7 17.Rfd1+=) 16.ed4 (16.Na4 Nfd7+=) 16...cd4 17.Na4 Bc5 (17...Nfd7 18.Rfc1+=) 18.Nc5 (18.Rfb1 Nfd7+=) 18...Qc5 19.Qd2 Qf5 (19...Qc7 20.Rfc1 Qc5 21.Bb4+–) 20.Rfc1+/– Nfd7 (20...Rac8 21.Nh4 Qe5 22.f4+/–) 21.Nd4 Qg6 22.Nc6 (22.Bf3 Bf3 23.Nf3 Nc5+/–) 22...Ne5?? (better is 22...Bc6 23.bc6 Nc5+/–) 23.Ne7+– (23.Ne7 Kf8 24.Ng6 hg6 25.Qb2+–) 1–0. pcmvr (2870) – rr (2400), net–chess.com, 2008.

8.Na3 Bb7 (8...a6 9.0–0 Bb7 10.d3 Bd6 11.c4 Re8=; 8...Bd6 9.0–0 a6 10.c4 Bb7 11.d4 Ne4=; 8...Bb4 9.0–0 a6 10.d3 Bb7 11.c4 dc4=; 8...Ne4 9.0–0 a6 10.d3 Nc5 11.c3 Bf6=) 9.0–0 a6 10.d4 Qd6 11.c4 Rc8 =.

8.Nc3 Qc7 (8...Bd6 9.a5 ba5 10.bc6 a6 11.Ba3 Nc6+=; 8...a6 9.0–0 Bd6 10.Nb1 Bb7 11.Ne5 Nfd7+=; 8...Bb7 9.0–0 c5 10.d3 Nbd7 11.Qd2 Bd6=; 8...Qd6 9.a5 ba5 10.Ra5 Qc7 11.Ra2 e5=) 9.bc6 a6 10.Ba3 Ba3 11.Ra3 e5 +=.

8.Be5 Bb7 (8...Nfd7 9.Bf4 Bb4 10.c3 Be7 11.d4 a6=; 8...c5 9.0–0 Nbd7 10.Bb2 a6 11.Na3 Qc7=; 8...Bd6 9.0–0 a6 10.Bd6 Qd6 11.bc6 e5=) 9.0–0 Nbd7 10.bc6 Bc6 11.Bf4 Bb7 +=.

8.Ne5 Qd6 (8...Bb7 9.0–0 Qd6 10.d4 a6 11.bc6 Nc6=; 8...a6 9.0–0 Qd6 10.bc6 Nc6 11.f4 Qc7=; 8...Qc7 9.0–0 a6 10.f4 Ne4 11.Nc3 f6=; 8...c5 9.0–0 a6 10.f4 Nfd7 11.Na3 Ne5=) 9.0–0 a6 10.f4 Bb7 11.bc6 Nc6 =.

7.a4 Bd7

8.0–0 a6 9.Na3 Re8 (9...b6 10.Ne5 (10.Bd3 Ne4 11.Ne5 Be8 12.Be4 de4 13.Qg4 f5 14.Qg3 Bf6=) 10...Qc7 11.c4 Rc8 12.d4 dc4 13.Bc4 ab5 14.ab5 Ba3=; 9...Bd6 10.Ne5 (10.c4 cb5 11.cb5 Qe7 12.Ne5 Rc8 13.f4 Ne4 14.ba6 ba6=) 10...Qc7 11.f4 Rc8 12.Bd3 ab5 13.ab5 Ra5 14.Qe2 Be8=; 9...Ne4 10.Ne5 (10.c4 dc4 11.ba6 b5 12.ab5 cb5 13.Qb1 Nc5 14.a7 Ra7+=) 10...Qa5 11.Nb1 Qc7 12.d3 Bf6 13.f4 Nd6 14.ba6 Na6=; 9...Qa5 10.c4 (10.Nb1 b6 11.Be5 Rd8 12.Nc3 c5 13.Rb1 Ng4 14.Bc7 Rc8=) 10...Ne4 11.Qc2 Rc8 12.Rfb1 Bb4 13.d4 Nc3 14.Bc3 Bc3=; 9...Qb6 10.Ne5 (10.Re1 Rd8 11.Ne5 Qa5 12.c4 Bb4 13.Rf1 Ne4 14.Bd3 Be8=) 10...Rc8 11.Bd4 c5 12.Bb2 c4 13.Bd4 Qd8 14.d3 Ba3=) 10.c4 (10.Ne5 Qc7 11.d4 cb5 12.ab5 ab5 13.Nb5 Ra1 14.Ba1 Bb5=; 10.Re1 b6 11.Ne5 Qc7 12.c4 Rd8 13.d4 Bb4 14.Rf1 dc4=) 10...ab5 (10...dc4 11.bc6 Bc6 12.Nc4 Nbd7 13.d3 Rc8 14.a5 Bd5=) 11.ab5 (11.cb5 c5 12.d3 Qa5 13.Nc2 Rc8 14.Ne5 Bd6=) 11...cb5 (11...dc4 12.Nc4 Ra1 13.Ba1 cb5 14.Nce5 Bc6+=) 12.Nb5 (12.cb5 Ra5 13.Qb3 Ne4 14.Nc2 Bd6=) 12...Ra1 13.Qa1 Nc6 (13...dc4 14.Bc4 Bc6=) 14.cd5 (14.Bf6 Bf6+=) 14...ed5 15.Bc3 Qb6 16.Rb1 Qd8 17.Nbd4 1–0. BlackDemon (2610) – jnwangyuxiang (1855), FICS rated standard game, 2013.

8.0–0 a6 9.Ne5 =.

8.0–0 cb5 9.ab5 a5 10.Be5 =.

8.0–0 cb5 9.ab5 a6 10.c4 dc4 11.Bc4 a5 (11...ab5? 12.Ra8 bc4 13.Be5+–) 12.Nc3 b6 13.d4 Bc8 14.d5 ed5 15.Nd5 Nd5 16.Bd5 Ra7 17.Ne5 Bb7 18.Qg4 g6?? (better is 18...Bf6 19.Bb7 Rb7+=) 19.Ng6!+– hg6 (19...hg6 20.Qg6#) 20.Qg6 1–0. BlackDemon (2645) – Elward (1730), FICS rated standard game, 2013.

8.0–0 cb5 9.ab5 Qc8 10.Ne5 Be8 11.c4 (11.Bd4 a6+=) 11...Nbd7 12.Nd7 (12.d3 a6+=) 12...Bd7= (worse is 12...Nd7 13.cd5 ed5 14.Qb3+/–) 13.Qb3 dc4 14.Qc4 (14.Bc4 Qc7=) 14...Qd8 (14...Qb8 15.Bf6 Bf6 16.Ra2=) 15.Nc3 (15.Be5 Qb6=) 15...Rc8 (15...Qb8 16.Qh4=) 16.Qd3 (16.Qa2 Ra8+=) 16...Ra8 (16...Qb6 17.Na4 Qc7 18.Rac1=) 17.Rfc1 Qe8 (17...Bc8 18.Qd8 Rd8 19.d4+=) 18.e4 (better is 18.Bf3+=) 18...e5 (better is 18...Qb8!?+=) 19.Nd5+– Nd5 20.Qd5 (20.ed5?! Bd6=) 20...Bf6 21.Qb7 (21.Ba3 Be6 22.Qd6 Bd8+–) 21...Rb8+/– 22.Qa7 Bb5 23.Bb5 Qb5 24.Bc3 Rfc8 25.Qa6 Qd7 26.Bb2 (26.Qe2 Rb6+/–) 26...Rd8 (26...Rc1 27.Bc1 Rd8 28.Qe2+=) 27.Bc3 (27.Rc2 Qg4 28.f3 Qg5+=) 27...h6 Exerts pressure on the backward pawn (better is 27...Rdc8!?=) 28.Qa4 (28.Qe2 Ra8+/–) 28...Qb7 (28...Qg4 29.h3 Qf4 30.Qc4+/–) 29.g3 (29.Qc4 Qe7+/–) 29...Ra8 30.Qb4 (30.Qc4 Ra1 31.Ra1 Qd7+/–) 30...Qd7 (30...Qb4!? 31.Bb4 Ra1 32.Ra1 Rd4=) 31.Ra8+/– Ra8 32.Ra1 Rc8 33.Qb1 Qc6 34.Qc2 (34.Ra7 Qe6+/–) 34...Be7 35.Qa4 (35.Qd3 Qe6+/–) 35...Qc5 (35...Qe6 36.Qb5 Bd6 37.Ra6+/–) 36.Rb1 (36.Qa7 Bd6+/–) 36...f6 (36...Qd6 37.Rb5 f6 38.Rb7+/–) 37.Bb4 (37.Rb7 Bf8+/–) 37...Qc7 (37...Qc4!? 38.d3 Qd3 39.Qa2 Kf8 40.Be7 Ke7 41.Rb7 Kd6=) 38.Be7 Qe7 39.Qb3 (39.d4 ed4 40.Qd4 Rd8 41.Qc4 Kh7+/–) 39...Kh7+= 40.Qf3 g6 (40...Qd7 41.Rb3+=) 41.h4 h5 42.g4 (42.Rb6 Kg7+/–) 42...hg4+= 43.Qg4 Rg8 (43...Rc2 44.Kf1 Rd2 45.h5+/–) 44.f4 ef4 45.Qf4 g5 (45...Rd8 46.Rb3+/–) 46.Qf5 (46.hg5 Rg5 47.Kf2 Qc5 48.Kf3 Qd4+/–) 46...Kh6+/– 47.Kf2 gh4 48.Qf4 Rg5 (48...Kh5 49.Qf3 Kh6 50.d4+/–) 49.Qh4 Kg6 50.Rh1 Qc5 51.Kf1 (51.Ke2 Kf7+/–) 51...Qc4 52.Ke1 Do you see the mate threat? 52...Qc1 (better is 52...Kf7+/–) 53.Kf2 (better is 53.Ke2 Qc4 54.d3 Qc2 55.Ke3+/–) 53...Qd2= 54.Kf1 Threatening mate: Qh7 54...Qd1 55.Kf2 Qd2 ½–½. Melzig,Ernst – Buss,Richard, Wch Seniors Bad Liebenzell, 1996.

8.0–0 c5 9.c4 dc4 10.Bc4 a6 11.d4 ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qb3 Qa1 15.Na3+/– Qf1 16.Kf1 cd4 17.ed4 Ne4 18.d5 ed5 19.Bd5 (19...Nf6 20.Nc2 Nd5 21.Qd5+–) 1–0. hpoli – hansson, ChessWorld.net, 2004.

8.c4 dc4 9.Bc4 cb5 10.ab5 Qc7 11.Be2 Rc8 12.Nc3 Bb4 13.0–0+/– Qb6 14.Qb3 Bc3 15.Bc3+– Ne4 16.Bb2?? Nd6? 17.Rac1 a6 18.Rc8 Nc8 19.Qc3 f6+/– 20.Ra1 Nd6 21.ba6 Na6+= 22.h4 Rc8 23.Qa3 Nb4?? 24.Bd4+– Nc2 25.Bb6 Na3 26.Ra3 Rc1 27.Kh2 Ne4 28.d3 Nf2 29.Kg3 Nd1 30.Bd1 Rd1 31.Rc3 1–0. Acevedo,Daiana – Tournier,Virginia, ARG–ch sf U16 Girls, 2003.

8.d3 cb5–/+ 9.ab5 Bb5 10.0–0 Nbd7 (10...Bd6 11.Nbd2+=) 11.Nbd2 (11.Nd4 Bc6+=) 11...Qc7–/+ 12.Qb1 a6 (12...Bc6 13.Nd4–/+) 13.c4 dc4 14.dc4 Bc6 15.Nd4 (15.Rd1–/+) 15...Rac8 (15...Bd6 16.N2f3–/+) 16.N2f3? (better is 16.Nc6!? Qc6 17.Bf3+=) 16...Be4–/+ 17.Qa2 (17.Nc2 Bf3 18.Bf3 Bd6–/+) 17...Nb6 (17...e5 18.Nb3–/+) 18.Ng5 (18.Nd2–/+) 18...Bf5 (18...Nc4 19.Ne4 Ne4 20.Rfc1–/+) 19.c5? (19.Nf5 ef5 20.Rfc1 Ne4 21.Ne4 fe4+=) 19...Bc5 (19...Qc5 20.Qb3 Bc2 21.Nc2 Qc2 22.Qb6 Qe2 23.Qb7–+) 20.Rac1? (20.Nf5!? ef5 21.Bf6 gf6 22.Nf3+=) 20...Qe7 (20...Qe5 21.Rfd1 Bg4 22.Bg4 Ng4 23.Ngf3–/+) 21.Nb3 (21.Nf5 ef5 22.Qa5 Nfd5–+) 21...h6 (21...Bd6 22.Nd4–+) 22.Nf3 (better is 22.Nc5 Rc5 23.Qa3–/+) 22...Rfd8?? (better is 22...Bb4–+) 23.Nc5= Rc5 24.Ba3 Ne4 (24...Nbd7 25.Nd4=) 25.Bc5 (25.Nd4 Bg6=) 25...Nc5 26.Qa5 Nb3? (better is 26...Nba4=) 27.Qb6+– Nc1 28.Rc1 Rd6 29.Qc5 Qd7 (29...Rd7 30.Qa5+–) 30.Nd4 (30.Ne5 Qe7+–) 30...Be4 31.f3 (31.Qe5 Bd5+–) 31...Bg6 32.Nb3 (32.Qa7 b5 33.Qa8 Qd8+–) 32...Rc6 (32...Bd3 33.Bd3 Rd3 34.Qb6+/–) 33.Qa3 Rc1 (33...Qd6 34.Nc5+/–) 34.Qc1 b5 35.Kf2 (35.Nc5 Qd6+–) 35...Qd6 36.Qc3 (36.Qc8!? Kh7 37.f4+/–) 36...Qh2+= 37.Qc8 Kh7 38.Qa6 ½–½. Lin,Ang Keng – Sag,Andrew, Adelaide University Open, 2003.

8.d4 cb5 9.ab5= Qb6 10.Nc3 (10.Ba3 Ba3 11.Na3 Rc8=) 10...Bb4 11.0–0 Bc3 12.Bc3 Bb5 13.Qb1 a6?? (better 13...Be2 14.Qb6 ab6 15.Ra8 Bf1=+) 14.Bb5+– Nc6 (14...Rc8 15.Bd2+–) 15.Bd3 Qc7 16.Bb2 (16.Qb2 b5+–) 16...b5 17.c3 Na5 18.Ba3 Rfc8 19.Bc5 Nc4 20.Re1 h6 21.e4 (21.Qc2 Na5+–) 21...de4 22.Be4 Ne4 23.Re4 Qc6 (23...Qd8 24.Re2+–) 24.Ne5 Qb7?? (24...Ne5 25.Re5 a5+–) 25.Nc4 1–0. onur604 (2320) – dkflbvbh1 (1955), lichess.org, 2020.

8.d4 Qb6 9.c4=+.

7.a4 Nbd7

8.0–0 a6 9.Nd4 c5 10.Nf3 Bd6 11.d4 cd4 =.

8.0–0 c5 9.c4 a6 10.d4 dc4 11.Bc4 cd4 =.

8.0–0 c5 9.c4 b6 10.d4 Bb7 11.Nbd2 Rc8 12.Rc1 cd4 13.ed4 (13.Nd4 Nc5=) 13...dc4 14.Nc4 Nd5 (14...Nd5 15.Nce5 N7f6=). Grund,Karl – Salamon,Bela, corr ICCF EU–M–342, 1974.

8.0–0 Qc7 9.c4 Bd6 10.h3 Re8 11.d3 e5 12.Nbd2 e4 13.de4 de4 14.Nd4 Ne5 15.Qc2 c5 16.b6 (16.N4b3!? Bf5 17.a5=) 16...Qb6+= 17.Nb5 Bb8 (17...Bf5 18.Nd6 Qd6 19.Rfd1–/+) 18.Rab1 (better is 18.Ne4!? Ne4 19.Qe4=) 18...Qc6 19.Nc3 Ng6 20.Nce4?? (better is 20.Rfd1–/+) 20...Ne4–+ (20...Re4?! 21.Bf6 Re8 22.Ba1=) 21.Ne4 Qe4 22.Qc3 (22.Qe4 Re4 23.Rfd1 Bc7–+) 22...Qe5 23.Qe5 Ne5 (23...Re5?! 24.Be5 Be5 25.Rfd1–/+) 24.Be5 (24.Rfd1 f6–+) 24...Be5 (24...Re5?! 25.Bf3 Re7 26.Rfd1–+) 25.Bf3 Rb8 26.Rfd1 Be6 27.Bd5 b6 28.f4 Bf6 29.e4 (29.Be6 Re6 30.Rd7 a5–+) 29...Bd5 30.e5 (30.ed5 Re4 31.Rdc1 Rf4–+) 30...Be5! 31.Rd5 Bd4 (31...Bd4 32.Kh2 Re4–+) 0–1. Genne,Rene (1770) – Caron,Jean_Marie (1885), Saint Denis REU, Reunion Open, 2013.

8.0–0 Qc7 9.d4 Bd6 10.c4 dc4 11.Na3 c3 =.

8.0–0 Bd6 9.d4 Qc7 10.Nbd2 Ng4 11.h3 Nh2 =.

8.0–0 Ne4 9.d3 Nec5 (9...Nef6 10.Nbd2=) 10.c4 (10.Nbd2 a6=) 10...Nf6 (10...dc4 11.dc4 Qc7 12.Qc1=) 11.Ne5 Qe8 (11...dc4 12.d4 Nb3 13.Ra2=) 12.f4 (12.d4 Nce4+/–) 12...Kh8 (12...dc4 13.dc4 Nfe4 14.Bh5=) 13.Rf3 (13.bc6 bc6 14.Nd2 Na6+=) 13...Kg8 (13...dc4 14.d4 Nce4 15.Bc4=) 14.Rg3 (14.Qc2 Bd7+=) 14...Kh8 (14...cb5 15.ab5 a6 16.Bf3+=) 15.Bh5 (15.bc6 bc6 16.Nd2 Na6+=) 15...g6 (better is 15...dc4!? 16.dc4 Nce4+=) 16.Bf3+/– Bd6?? (better is 16...dc4 17.bc6 cd3+/–) 17.Ng4+– (17.Ng4 e5 18.Nf6+–) 1–0. Wall,Bill – Chesster, internet, 2002.

8.0–0 Re8 9.c4 Nf8 10.Ne5 Qc7 11.f4 Ng6 (11...Bd7 12.Qb3+=) 12.Ng6 hg6 13.d4 (13.Qb3 c5+=) 13...c5 (13...dc4 14.bc6 Nd5 15.cb7 Bb7 16.Bc1+=) 14.Nd2 cd4 15.Bd4 Bc5 16.Bc5 (16.Rc1!? must definitely be considered 16...Bd4 17.ed4 dc4 18.Rc4= (worse is 18.Bc4 Qd6+=)) 16...Qc5= 17.Qb3 Bd7 18.Qa3 Qa3 19.Ra3 Rac8 20.Rc3 e5 21.fe5 Re5 22.Bf3 b6 White has a new backward pawn: c4 23.Rfc1 Ne4 (23...dc4!? should be investigated more closely 24.Rc4 Rc4 25.Rc4 Re3=) 24.Be4+= de4 25.Nb3 Kf8 (25...Be6 26.c5 Bb3 27.cb6 Rc3 28.Rc3 ab6 29.Rb3+=) 26.c5+= bc5 27.Nc5 Rd8? 28.Rd1+– Ke7 29.Rc4?? Bf5 30.Rd8+/– Kd8 31.h3 Be6 32.Rd4 Kc8 33.Ne4 f5 34.Nd6 Kc7 35.Kf2 Rc5? 36.Ne8+– Kc8 37.e4 Rc2+/– 38.Kg3 fe4 39.Nd6 Kc7 40.Ne4 Bf5 41.Nd6 Ra2 42.Ne8 Kb6 43.Ng7 Bc2 44.Rd6 Kc5 45.Rc6 Kb4 46.b6 ab6 47.Rb6 Ka5 48.Rb8 Be4= 49.Ne6 Rg2 50.Kf4 Bf5?? 51.Ra8 Kb6= 52.Ng5 Ra2 53.h4 Bc2 54.Ne6 Bf5 55.Nd4 Kb7 56.Ra5 Kb6? 57.Rb5+– Ka6 58.Rb4 Ka5? 59.Rc4?? Bb1 60.Nb3 Ka6 61.Ke5 Rh2 62.Kd6 Rf2 63.Rc6 Ka7 64.Nc5 Rf6 65.Kc7 Rf7 66.Nd7 Bf5= 67.Rd6 Rh7 68.Rd4 ½–½. Ebert,Lutz (1815) – Sager,Bernd (1980), Mecklenburg VP LL2, 2002. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 Be7 5.e3 0–0 6.Be2 c6)

8.0–0 Re8 9.d4 a6 10.Ba3 =.

8.0–0 Re8 9.d4 Bd6 10.c4 Ne4 11.c5 Bc7 12.Nbd2 f5 13.Qc2 Qf6 14.Nb3 g5 15.Nfd2 Qh6 16.g3 Ndf6 17.Ne4 Ne4 18.f4 Kh8 19.Bf3 Nf6 20.Rf2 Bd7 21.Qe2 Rg8 Black prepares g4 22.Kf1 Qg6 23.Ke1 g4 24.Bg2 Qe8 25.Bf1 Ne4 ½–½. Ebert,Lutz (1765) – Manke,Karsten (1835), Mecklenburg VP LL1, 2006. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 Be7 5.e3 c6 6.a4 0–0 7.Be2 Nbd7)

8.0–0 Re8 9.d4 Nf8 10.Nbd2 Qc7 11.c4 Ng6 12.Qb3 Bd6 (12...Bd7 13.Bd3=) 13.Bd3 (13.c5 Be7+=) 13...Bd7 (13...Ng4 14.h3 Nh2 15.Rfc1+=) 14.Rfc1 White plans c5 (14.c5 Be7+=) 14...Rac8 (14...Ng4 15.h3 Nf6 16.Ba3+=) 15.c5 (15.Ba3 Rf8+–) 15...Bf8 16.b6 Qb8 (16...ab6 17.cb6 Qd8 18.Ba3+–) 17.ba7 Qa7 18.a5 Qb8 (18...Ra8 19.Rcb1+–) 19.Ra4 Qc7 20.Bc3 Ra8 21.Rb1 Bc8 22.a6 (22.Qc2 Be7+–) 22...ba6+= 23.Ba5 Qe7 24.Rb4 Nd7 (24...e5 25.Bg6 ed4 26.Bh7 Kh7 27.Qd3 g6 28.Qd4 Bg7 29.Qh4 Kg8=+) 25.Qa4+– Nc5 26.dc5 Qc5 27.Rb6 Bd7 (27...Qa3 28.Qc6 Bd7 29.Qd7 Qd3 30.Nd4+–) 28.Rb7 (worse 28.Ba6 e5+–) 28...Ra7 (28...Qe7 29.Bg6 hg6 30.Ne5+–) 29.Bb4 Rb7 30.Bc5 Rb1 31.Bb1 Bc5 32.Bg6 (32.Qa6?! e5+–) 32...hg6 33.Ne5 (33.Ne5 Rd8 34.Nd7+–; 33.Qa6?! Bd6+–) 1–0. Kjaerstad,Eivind J – Fuernes,T, corr NPSF NOR, 1991.

8.0–0 Ne8 9.c4 dc4 10.Bc4 cb5 11.ab5 Nd6 12.Be2 f5 (12...Nb6 13.Qb3+=) 13.d4 Nf6 (13...f4 14.Nc3+=) 14.Nc3 White prepares the advance d5 14...a5 (14...f4 15.Qd3+=) 15.d5 (15.Ne5 Nd7+=) 15...ed5 (15...Nde4 16.de6 Be6 17.Nd4+=) 16.Nd5+= Nd5 (16...Be6 17.Ne7 Qe7 18.Qa4+=) 17.Qd5 Nf7 18.Bc4 (18.Qb3 Bf6+=) 18...Qd5= 19.Bd5 Kh8 (19...Rd8!? 20.Bb3 Kf8=) 20.Rfc1+/– Bd6 21.Ba3 (21.Ra4 Nd8+/–) 21...Ba3+= 22.Ra3 Nd6 23.Rca1 Nb5 24.Ra5 Ra5 25.Ra5 Nc7 26.Bb3 (26.Bc4 Rd8 27.Nd4 g6+=) 26...g6 (26...b6 27.Ra7 Be6 28.Be6 Ne6 29.Rb7+/–) 27.h3 (27.Nd4 Kg7+=) 27...Kg7 28.Re5 (28.Nd4 Rd8+=) 28...Re8 ½–½. Meyer,Frank (2035) – Zimmermann,Manfred (1715), Wichern op 6th, 2001.

8.d3 a6 (8...Qc7 9.Nbd2 (9.0–0 e5 10.c4 dc4 11.dc4 Bd6 12.h3 Rd8 13.Qc2 cb5+=) 9...e5 10.0–0 Bd6 11.Ba3 Ba3 12.Ra3 Qd6 13.Ra1 c5=; 8...Qb6 9.d4 (9.0–0 cb5 10.Bd4 Nc5 11.Bc5 Bc5 12.d4 Bd6 13.ab5 Bd7+=) 9...Bb4 10.Bc3 Bd6 11.0–0 Qc7 12.Bb2 Ng4 13.h3 Nh2=; 8...Qa5 9.Bc3 (9.Qd2 Qc7 10.0–0 e5 11.Qc3 Bd6 12.Nbd2 Re8 13.Ba3 c5+=) 9...Qc7 10.0–0 e5 11.Nh4 Bc5 12.d4 ed4 13.Bd4 Bd4=; 8...Bd6 9.c4 (9.0–0 a6 10.c4 ab5 11.ab5 Ra1 12.Ba1 cb5 13.cb5 Re8=) 9...e5 10.cd5 cd5 11.0–0 a6 12.Ba3 Qc7 13.Qd2 b6=) 9.bc6 (9.0–0 ab5 (9...Qc7 10.c4 dc4 11.dc4 Rd8 12.Nbd2 e5 13.Qc2 Bd6 14.Rfd1=) 10.ab5 Ra1 11.Ba1 cb5 12.Ne5 (12.Qd2 b4 13.Ne5 Qc7 14.f4+=) 12...Qc7 13.f4 b4+= 14.Bd4+=; 9.Nbd2 ab5 (9...Bd6 10.bc6 bc6 11.0–0 Rb8 12.Rb1 e5 13.c4 Qc7 14.Qc2=) 10.ab5 Ra1 11.Qa1 cb5 12.Bd4 b4 13.e4 (13.0–0 Qc7+= 14.e4+=) 13...Qc7 14.Qb2+=; 9.Nc3 e5 (9...cb5 10.ab5 e5 11.0–0 Qc7 12.Qd2 Rd8 13.Rfb1 e4 14.Nd4=) 10.0–0 Qc7 11.Qd2 cb5 12.ab5 Re8 13.Rfb1 a5 14.Na4=; 9.ba6 ba6 (9...Ra6 10.0–0 b6 11.e4 de4 12.de4 Ra7 13.Qd4 Bc5 14.Qc3+=) 10.Nc3 Rb8 11.Rb1 Qa5 12.Qd2 Bb4 13.Rc1 Nc5 14.Nd4–/+; 9.c4 ab5 (9...Bb4 10.Nbd2 ab5 11.ab5 Ra1 12.Qa1 dc4 13.bc6 bc6 14.d4+=) 10.ab5 Ra1 11.Ba1 cb5 12.cd5 Bb4 13.Bc3 Bc3 14.Nc3+=) 9...bc6 (9...Nc5 10.cb7 Bb7 11.Bd4 Bd6 12.Nc3 Nfd7 13.0–0 Qa5 14.e4+=) 10.0–0 (10.Nc3 Rb8 A) 11.Rb1 Qa5 12.Qd2 Bb4 A1) 13.Rc1 e5 (13...Nc5–/+ 14.Nd4–/+) 14.0–0–+; A2) 13.0–0 Nb6 14.Ba1–/+; B) 11.Qc1 Bb4 12.0–0 e5 13.Rb1 Re8 14.d4+=) 10...Bb7 (10...Rb8 11.Ra2 Qc7 12.Ba3 c5 13.Rb2 Bb7+= 14.Nc3+=) 11.Nbd2 Rc8 (11...c5 12.c4 Rb8 13.Qc2 (13.Rb1 Bc6= 14.cd5+=) 13...Bd6 14.Rab1=) 12.c4 (12.e4 A) 12...Rb8 13.e5 Ng4= (13...Nh5 14.g3=) 14.h3=; B) 12...c5 13.Rb1 Bc6 14.e5+=) 12...c5 (12...Rb8 13.Rb1 c5= 14.Qc2=; 12...Bd6 13.Rb1 Rb8 14.d4=) 13.Ne5 (13.Qc2 Rb8= 14.Rfc1=; 13.Rb1 Rb8 14.cd5=) 13...Ne5 14.Be5 dc4 15.Nc4 Nd5 16.Bf3 White intends a5 16...f6 17.Bb2 Qc7 18.a5 Nb4 19.Bb7 Qb7 20.Qb3 (20.Qg4 e5 21.Nb6 Rcd8 22.Qc4 Kh8+=) 20...Qd5 21.Rad1 Rb8 22.e4 Qc6 23.Nb6 Rfd8 24.f4 (24.Qc4 Qd6=) 24...Rb6 (24...c4!? 25.Qc4 Qc4 26.Nc4 Nd3+=) 25.ab6+= Qb6 26.Ba3?? (better is 26.Rf2+=) 26...c4–+ (26...c4 27.d4 cb3–+) 0–1. phildo (1845) – bernardhgaskin, gameknot.com, 2013.

7.c4 dc4

8.a4 a6 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Bd7 13.Bf6 Bb5 14.Be7 Qe7 +=.

8.Bc4 Bd7 9.a4 Nd5 10.0–0 Bf6 11.Bf6 Qf6 12.d4 Nb6 13.Bb3 (better is 13.Bd3!?+=) 13...cb5= 14.ab5 Bb5 15.Re1 Bc6 16.Nbd2 N8d7 17.Bc2 Qe7 18.Be4 Be4 19.Ne4 Nf6 20.Nc3 Nbd5 21.Nd5 Nd5 22.Qb3 b6 23.e4 Nf6 24.d5 ed5 25.ed5 Qc5 26.Rad1 Rad8 27.h3 Rd5 28.Rd5 Qd5 29.Qa3 a5 30.Rc1 Rd8 31.Qe3 Qd6 32.Ne5 Nd5 33.Nc4 Ne3 34.Nd6 Kf8 35.Nb5 Rd1 36.Rd1 Nd1 37.Kf1 Nb2 38.Ke2 Ke7 39.Kd2 Ke6 40.Kc3 Nd1 (40...Nd1 41.Kc4 Kd7–+) 0–1. Valpa – ArieRoos, playchess.de, 2002.

8.Bc4 cb5

9.Bb5 Bd7 10.Nc3 =.

9.Bb5 Bd7 10.Bd7 Nbd7 11.Bf6 Nf6 12.d4 –/+.

9.Bb5 Qb6

10.Ba3!? Nc6 11.Be7 Ne7 12.Nc3 =.

10.a4 a6+= 11.Bd3?? (better is 11.Bd4 Qc7 12.Bd3+=) 11...Qb2–+ 12.Nc3 (12.Na3 b5 13.Nc2 Qb3–+) 12...Qb6 13.0–0 (13.Rb1 Qa5–+) 13...Nc6 14.Rb1 (14.g3 Qa5–+) 14...Qc7 (14...Qa5 15.Bc4–+) 15.Ne4 (15.Qb3 Bd7–+) 15...Ne4 (15...Nd5 16.Rc1–+) 16.Be4 Rb8 (16...Nb4 17.d4 f5 18.Bd3–+) 17.Qc2 Bd7 (17...h6 18.d4–+) 18.Bh7 Kh8 19.Be4 f5 (19...Rfc8 20.d4–+) 20.Bd3 (20.Bc6 Qc6 21.Qc6 Bc6–+ (21...bc6?! 22.Ne5 Rb1 23.Rb1–/+)) 20...Qd6 (better is 20...Rfc8 21.Rfc1–+) 21.g3 (21.Bc4 Na5 22.Be2 Rfc8–+) 21...Ne5 (21...e5!? 22.Be2 e4 23.Ne1–+) 22.Be2 (22.Ne5 Qe5 23.Rfc1 Rfc8–+) 22...Rfc8 (22...Nf3 23.Bf3 b5 24.a5–+) 23.Qd1 (23.Qa2–+) 23...Ba4 (better is 23...Nf3 24.Bf3 b6–+) 24.Qa4= Nf3 25.Bf3 Exerts pressure on b7 25...Qd2? (better is 25...b5!? 26.Qa2 e5=) 26.Rfd1+/– Qc2 (better is 26...Qc3 27.Bb7 Rd8+/–) 27.Qd4 (better is 27.Qd7!? Bf6 28.Qe6+/–) 27...Rd8 28.Qb2 (28.Qe5!? Rd1 29.Rd1+=) 28...Rd1+= 29.Bd1 Qb2 30.Rb2 b5 31.Be2 (31.Bb3 Rb6+=) 31...Kg8 (31...Bf6 32.Rb3–/+) 32.Kf1 (32.Ra2 Rb6+=) 32...Kf7 (32...g5 33.Bd3+=) 33.f3 (33.Ra2 Rb6–/+) 33...e5 (33...Bf6 34.Rb3–/+) 34.Ke1 (34.Bd3 g6+=) 34...Ke6 (34...Rc8 35.Bd3+=) 35.e4 fe4 36.fe4 Bc5 37.g4 Rb6 38.h4 Bd4 39.Rb3 b4 40.Kd2? a5–+ 41.g5 a4 (41...a4 42.Bc4 Kd6–+) 0–1. valpa – Kryte, playchess.de, 2002.

10.a4 Nc6 11.Ba3 A) 11...Nb4 12.Qb3 a5 (12...Qa5 13.Nc3 a6 14.Be2 Re8 15.0–0 Nbd5 16.Be7 Re7 17.Nd5 ed5=; 12...Qd6 13.d4 a6 14.Bd3 b6 15.Nbd2 Nd3 16.Qd3 Qd8 17.Be7 Qe7=) 13.0–0 Bd7 14.Bd7 Nd7 15.d4 Rac8 16.Nbd2 Rc6 17.Rac1 Rfc8=; B) 11...Ba3 B1) 12.Ra3 a6 (12...Bd7 13.0–0 Nb4 14.Be2 Rfc8 15.d4 Qd6 16.Nbd2 Rc7 17.Nc4 Qe7=; 12...e5 13.Bc6 Qc6 14.Ne5 Qg2 15.Qf3 Qf3 16.Nf3 Be6 17.Nc3 Rac8=) 13.Bc6 Qc6 14.d4 b6 15.0–0 Bb7 16.a5 Rfc8 17.ab6 Qb6=; B2) 12.Na3 Bd7 (12...Rd8 13.d4 a6 14.Nc4 Qc7 15.Bc6 Qc6 16.Qb3 Qd5 17.a5 Bd7+=; 12...Ne7 13.0–0 Bd7 14.Bd7 Nd7 15.Nc4 Qa6 16.d3 Rfc8 17.a5 Rc7=; 12...Na5 13.0–0 Bd7 14.d4 Bb5 15.ab5 Rfc8 16.Qd3 Rc7 17.Rfc1 Rc1=; 12...Qd8 13.d4 Bd7 14.0–0 Rc8 15.Rc1 Qe7 16.Nc4 Rc7 17.Qb3 Rfc8=) 13.0–0 a6 14.Be2 e5 15.d4 ed4 16.ed4 Rfe8 17.Nc4 Qc7=.

10.a4 Nc6 11.Na3 a6 12.Nc4 Qc5 (12...Qd8 13.Bc6 bc6 14.0–0 Rb8 15.d3 Qd5 16.Be5 Rb7 17.Rb1 Ng4+=; 12...Qc7 13.Bc6 Qc6 14.Nce5 Qd5 15.0–0 b5 16.d3 b4 17.e4 Qd6=; 12...Qa7 13.Bc6 bc6 14.0–0 Rd8 15.Qc2 c5 16.d3 Nd5 17.Rfd1 Nb4=) 13.Ba3 Nb4 14.Bb4 Qb4 15.Nb6 Ra7 16.Rb1 Qa5 17.Be2 Nd5 =.

10.a4 Nc6 11.Na3 Nb4 A) 12.Rb1 Qa5 (12...Nfd5 13.0–0 Qd8 14.d3 Nc7 15.Bc4 b6 16.e4 Bb7 17.Qb3 Nba6+=; 12...Nbd5 13.0–0 Qd8 14.d3 a6 15.Bc4 Qa5 16.Bd5 ed5 17.Qb3 Bd7=) 13.Bf6 gf6 14.Nd4 e5 15.Nb3 Qd8 16.Qf3 a6 17.Bc4 Qd7+=; B) 12.0–0 Nfd5 (12...a6 13.Be2 Bd7 14.Nc4 Qd8 15.Qb3 Nfd5 16.a5 Rc8 17.Rfc1 Bb5+=; 12...Nbd5 13.Bd4 Qd8 14.d3 a6 15.Bc4 b6 16.Qb3 Rb8 17.Rfb1 Bb7+=; 12...Qd8 13.Qb3 a6 14.Be2 Nfd5 15.Nc4 b6 16.Rfc1 Bb7 17.Be5 Nc6=; 12...Rd8 13.Bd4 Qd6 14.Rc1 b6 15.Nc4 Qd5 16.Bb6 ab6 17.Nb6 Qb7=) 13.Rc1 Qd8 14.e4 a6 15.Bc4 Nf6 16.Bf6 Bf6 17.d4 Qa5=.

10.a4 Nc6 11.Na3 Bd7 12.Nc4 (12.Rb1 Rfd8 (12...Qc7 13.0–0 a6 14.Be2 e5 15.d3 Be6 16.Qd2 Bd6 17.Rfc1 Ba2=; 12...Rfc8 13.0–0 a6 14.Nc4 Qd8 15.Bc6 Rc6 16.d3 b5 17.Bf6 Bf6=; 12...Rac8 13.0–0 Qc7 14.d4 a6 15.Be2 Rfd8 16.Rc1 Nd5 17.Nc4 Ncb4=; 12...a6 13.Be2 Qc7 14.Nc4 Nd5 15.0–0 b5 16.Nce5 Rfb8 17.ab5 ab5=) 13.0–0 Qc7 14.d3 a6 15.Bc4 Rac8 16.Qe2 e5 17.Ng5 Be8=; 12.Bf6 Bf6 13.d4 a6 14.Nc4 Qc7 15.Bc6 Bc6 16.Ncd2 Rac8 17.0–0 Rfd8+=; 12.Rc1 a6 13.Nc4 Qd8 14.Bf6 Bf6 15.Bc6 Bc6 16.a5 Rc8 17.Nb6 Rc7+=) 12...Qd8 (12...Qc7 13.Rc1 a6 14.Bc6 Bc6 15.Nce5 Rfd8 16.Nd4 Rab8 17.Ndc6 bc6=) 13.Nce5 (13.0–0 a6 14.Bc6 Bc6 15.Nce5 Bd5 16.d3 b6 17.e4 Bb7=) 13...Ne5 14.Ne5 (14.Be5!? Bb5 (14...a6 15.Be2 Nd5 16.0–0 Rc8 17.Rb1 f6=) 15.ab5= Bd6 16.Bd4 a6 17.Qe2 a5=) 14...Bb5–/+ 15.ab5 Qd5 16.Qe2 (16.0–0 Qb5 17.Bd4 Bd6–/+ (17...a5–/+)) 16...Qg2 17.Rf1 (17.Qf3 Qf3–/+) 17...Qe4 (17...Rfc8 18.f4 Qh3 19.d3–/+) 18.Rg1 g6 (18...Rfc8 19.Ng4 Ne8 20.Bc3–/+) 19.Qd1 (19.Bd4 Rfc8–/+) 19...Rfc8 (19...Rfd8 20.Qf3–/+) 20.Ra4 (20.Bd4 Nd5 21.d3 Bb4 22.Kf1 Qf5–/+) 20...Qc2 (20...Qd5–+) 21.Qa1? (better is 21.Bd4!?–/+) 21...Ne4–+ 22.Rd4 (22.Kf1 Nf2! 23.Nf7 Kf7 (23...Qd2 24.Nh6 Kf8 25.Rf4 Ke8 26.Rf2 Qd3 27.Re2+=) 24.Rf4 Ke8 25.Rf2 Qd3 26.Kg2 Qd5 27.Kh3 Qb5–+) 22...Bb4 (22...Nc5 23.Qa2 Bf6 24.f4 Be5 25.fe5 Nd3 26.Rd3 Qd3 27.Qa3 Qb5 28.Rf1–+) 23.Nf3 Nc5 24.Rb4 Nd3 25.Kf1 Nb4 26.Kg2 Qe4 27.Bh8 Kf8 28.Bg7 Ke8 29.Kg3 h5 30.h3 Nd3 31.Qa3 Rc5 32.Ne5 Ne5 33.Qc5 Qf3 34.Kh2 Qf2 35.Kh1 Qf3 36.Kh2 Nd7 37.Qc4 Rd8 38.Rg6–/+ Qf5 39.Rg2 f6 40.Bh6= Ne5?? 41.Rg8+– Ke7 42.Qc7 Rd7 43.Rg7 Ke8 44.Qc8 Rd8 45.Rg8 Kf7 46.Qb7 Rd7 47.Rg7 Ke8 48.Qa8 Rd8 49.Rg8 Kf7 50.Qa7 Nd7 51.Rg7 Ke8 52.Bf4 e5?? 53.Rg8 Nf8+– 54.Qa5 Qd3 55.Bh6 Kf7? 56.Qa2 Ne6?? 57.Rg7 Kf8 58.Rd7 1–0. Doncea,Vladimir (2135) – Imamov,Furkat, WY ol, Kuala Lumpur MAS, 2002.

10.Qb3 a6 11.Bc4 Qb3 12.Bb3 Rd8 13.0–0 b5 14.Bd1 Bb7 15.Ne5 Nc6 16.Nc6 Bc6 17.Nc3? (Better is 17.Be2–/+) 17...Rd2–+ 18.Bc1 Rd6 19.Bb2 Rad8 20.f3 Nd5 21.Nd5 Rd5 22.Bb3 Rg5 23.e4?? Rd2–+ 24.Bc3 Rgg2 0–1. valpa – mrchess, HCL–C2271 playchess.de, 2003.

6.Be2 Bd7

7.0–0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c5 11.c4 Qc7 12.Ne5 Bc8 13.Qb3 b6 14.d4 Bb7 15.Nd2 Bd6 16.Ndf3 Nbd7 17.Bb2 Ne4 18.Rc1 Ne5 19.de5 Be7 20.Qc2 Ra8 21.Ra1 Qd8 22.Nd2 g6 (22...Ra1 23.Ba1 Qa8 24.Bc3+=) 23.f3 (23.Ra8!? Qa8 24.Ne4 de4 25.Qd2+=) 23...Nd2 24.Qd2 Ra1 25.Ba1 Qa8 26.Qb2 (26.Bc3 Qa4=) 26...Qa5 (26...Qa4 27.Qc1+=) 27.Kf2 Qb4 (27...Qa4 28.Qc1+=) 28.Qb4+= cb4 29.Bd4 Bc5 30.Bd3 b3 31.Ke2 (31.Bb2!?+=) 31...Bd4 32.ed4 dc4 33.Bc4 Bd5?? (better is 33...b2 34.Bd3 Bd5=) 34.Bd5+– ed5 35.Kd2 b2 36.Kc2 b1Q 37.Kb1 g5 38.Kc2 h5 39.Kd2 Kg7 40.Ke3 Kg6 41.g3 Kf5 42.h3 Ke6 43.g4 h4 (43...hg4 44.hg4 f6+–) 44.f4 f6 45.ef6 Kf6 46.fg5 Kg5 47.Kf3 Kf6 48.Kf4 Kg6 49.Ke5 Kg5 50.Kd5 Kf4 51.Ke6 Kg3 52.g5 Kh3 53.g6 Kg4 54.g7 h3 55.g8Q Kf3 56.Qg1 Ke4 57.Qh1 (57.d5 Kd3 58.Qf1 Kd2 59.d6 Kc3 60.d7 Kc2 61.Qc4 Kd2 62.d8Q Ke1 63.Qc2 h2 64.Qdd1#) 57...Kd4 58.Qh3 (58.Qh3 Kc4 59.Qh4 Kd3 60.Qd8 Kc4 61.Qb6 Kb4 62.Qc6 Ka4 63.b6 Ka5 64.b7 Kb4 65.b8Q Ka5 66.Qbb6#) 1–0. pumpkin (2330) – latourladame (2190), net–chess.com, 2012. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 Bd7 5.e3 Be7 6.Be2 0–0)

7.0–0 a6 8.a4= Bd6 9.Na3 Qe7 10.Ne5 Rd8 11.f4 b6 12.Nd7 Nfd7 13.Qe1 c6 14.Qg3 =.

7.0–0 c5 8.a4 A) 8...a6 9.Na3 (9.Ne5 Qc7 10.Na3 c4 11.f4 Ne4 12.Nd7 Nd7 13.a5 c3 14.b6–/+) 9...Qa5 10.c4 Qb6 11.Ne5 Rd8 12.Qc2 d4 13.Bf3 ab5 14.cb5+=; B) 8...b6 9.Be5 (9.Ne5; 9.Nc3; 9.Na3) 9...a6 10.Nc3 Ne4 11.Re1 f6 12.Bb8 Qb8 13.ba6 Bc8 14.Nb5=.

7.0–0 c6 8.a4+= c5 (8...Be8 9.Na3 (9.Nc3 Bd6 10.Nd4 c5 11.Nf3 e5 12.d3 Bd7 13.Qd2 Re8 14.Rfb1+=; 9.Bd4 c5 10.Bb2 a6 11.Re1 Bd6 12.Na3 Nbd7 13.c4 Qc7 14.cd5=; 9.c4+= dc4 10.Bc4 Bd7 11.d3 a6 12.Nc3 ab5 13.ab5 Ra1 14.Qa1+=; 9.Ba3 c5 10.d4 Nbd7 11.Nbd2 Rc8 12.a5 Bd6 13.c4 Ne4 14.Bd3+=) 9...Nbd7 10.c4 Nb6 11.Qb3 Bd7 12.d3 dc4 13.dc4 cb5 14.ab5+=; 8...a6 9.Nc3 Bd6 10.bc6 Nc6 11.Ba3 Ba3 12.Ra3 e5 13.Rb3 d4 14.ed4+=) 9.c4 (9.Be5 Ng4 10.Bg3 Qa5 11.Nc3 a6 12.Rb1 ab5 13.ab5 Qb6 14.Ra1=; 9.d3 a6 10.c4 Bd6 11.Nc3 Qc7 12.Qb3 dc4 13.Qc4 e5 14.ba6+=; 9.Ne5 a6 10.Nc3 Qc7 11.f4 d4 12.Nb1 de3 13.de3 Rd8 14.Nd2=; 9.d4 c4 10.Ba3 Ba3 11.Ra3 Qb6 12.Nc3 a6 13.Ra1 Qd6 14.Qd2=) 9...a6 (9...Be8 10.d4 (10.Qc2+/– a6 11.d4 Nbd7 12.cd5 Nd5 13.Nc3 Nb4 14.Qb3=) 10...Nbd7 11.a5 a6 12.b6 Rc8 13.Nbd2 cd4 14.Bd4+=) 10.Nc3 (10.Na3 dc4 (10...Be8+= 11.d3 Nbd7 12.Qc2 Bd6 13.cd5 ed5 14.Rfc1+=) 11.Qc2 b6 12.Ng5 Re8 13.Nc4 h6 14.Ne4=; 10.d4 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 Qa5 14.Qb3+=) 10...ab5 (10...b6 11.d4 dc4 12.dc5 Bc5 13.Bc4 Qc7 14.Qe2+=) 11.cb5 (11.ab5 Ra1 12.Qa1 Qb6 (12...Bc8+= 13.d3 Bd6 14.e4+=) 13.Qa2 dc4 14.Qc4=) 11...b6 (11...Be8 12.Qc2= Nbd7 13.d4 Qa5 14.dc5=; 11...Qa5 12.Qc2 Bd6 13.Ng5 h6 14.Nf3+=) 12.Ne5 (12.a5 Ra5 (12...ba5) 13.Ra5 ba5= 14.Qa4+=; 12.d4 c4 13.Ne5 Bb4 14.Qc1=) 12...Qc7= 13.f4 Be8 (13...Bd6 14.Bf3=) 14.Bd3 (14.Bf3 Nfd7+=; 14.Rc1=) 14...Nbd7= 15.Ne2 (15.Nc6 Bd6=) 15...Ne4 (15...c4 16.Bc2+=) 16.Be4= de4 17.Nd7 (17.Nc4!?=) 17...Qd7 (17...Bd7 18.Qc2 Qb7 19.Ng3=) 18.Qc2 f5 19.Rad1 (19.Rfb1 Qd5+=) 19...Bf6 (better is 19...Rd8!? 20.Ng3 h5–/+) 20.Bf6= Rf6 21.d4 ed3 22.Rd3 Qb7 (22...Qe7 23.Rfd1=) 23.Rd6+= Qc7 (23...Rb8 24.Qc4+=) 24.Rfd1 h5 (24...Qa7 25.Nc3+=) 25.Nc3 (25.e4 Rg6+/–) 25...Rc8 (25...Qb7 26.g3+/–) 26.R1d2 (26.e4 c4+/–) 26...Kh8 (26...c4!?+=) 27.Qd1 g6?? (better is 27...Kg8+/–) 28.Qa1+– Kh7 (28...Qg7 29.Rb6 Ra8 30.Qa3+–) 29.Ne4!! Rf8 30.Ng5 Kh6 31.Ne6 Qe7 32.Nf8 Qf8 33.Qe5 c4 34.Rf6 Qb4 35.Rfd6 (35.Rfd6 Bf7 36.Qf6+–) 1–0. Plock,Joerg – Trapp, 1996.

7.0–0 Qe8 8.a4 c5 9.c4 a6 10.Qb3 (10.d3 ab5 11.ab5 Ra1 12.Ba1 Qd8+=) 10...ab5+= 11.ab5 Ra1 12.Ba1 d4? (better 12...b6!?+=) 13.ed4+– Ne4 (13...Qd8 14.Qe3 b6 15.dc5 Bc5 16.Qg5+–) 14.Qc2 (better 14.Qe3 f5 15.d3 cd4 16.Bd4+–) 14...Bf6?? (better 14...f5+–) 15.Qe4 b6 (15...Bc8 16.Bb2+–) 16.Ne5 Be5 (16...Qe7 17.dc5 Qc5 18.d4+–) 17.Qe5 f6 18.Qd6 Qd8 (18...Qc8 19.Qb6 cd4 20.Bd4+–) 19.dc5 (19.dc5 bc5 20.Qc5+–) 1–0. GuestXNRT – GuestKGDC, freechess.org, 2019.

7.a4 a6 8.c4 ab5 9.ab5 (9.cb5 Bd6=) 9...Ra1=+ 10.Ba1 c6 11.Nc3 cb5 (11...dc4 12.Bc4 Qa5 13.Qb1=) 12.cb5 (12.cd5 ed5 13.Nb5 Nc6=) 12...Be8 (12...Qc7 13.0–0=) 13.0–0 Nbd7 (13...Qd6 14.Na2=) 14.d4 (14.Qc2 Nb6+=) 14...Nb6= 15.Qb3 Bd6 (15...Qc7 16.Rc1=) 16.Bb2+= Ne4 (16...Bd7 17.Ba3 Ba3 18.Qa3+=) 17.Bd3 (17.Ne4 de4 18.Nd2 Bd7+–) 17...Nc3 (17...f5 18.Ba3=) 18.Bc3+= f5 (18...f6 19.Bb4+=) 19.Bb2 (19.Bb4 Bh5 20.Ne5 Qc7+–) 19...Bh5+= 20.Ne5 f4 0–1. GuestNPKG – GuestSJHC, freechess.org, 2019.

7.a4 a6 8.c4 dc4 9.Bc4 c6 10.Nc3 cb5 11.ab5 Qc7 12.Be2 Nd5 13.Nd5 ed5 14.0–0 Qb6 15.Bd4 Bc5 16.ba6 Na6 17.Bc5 Nc5 18.Ne5 Be6 19.d4 Ne4 20.Bd3 Ra1 21.Qa1 Nd6 22.Qb1 Qa5? (better is 22...Qb1 23.Rb1 Rb8+=) 23.Bh7+– Kh8 24.Bd3 b5 25.h3 b4 26.Rc1 Qa3 27.Qa1?? (27.Rc6 Ne4+–) 27...Rc8? (better is 27...Ra8 28.Qa3 ba3+=) 28.Rc8+– Nc8 29.Qa3 (better is 29.Qd1 g6 30.Qc2+–) 29...ba3= 30.Bb1 Na7 31.Ba2 Nb5 32.Nc6 f5 33.Nb4 Exerts pressure on the isolated pawn 33...Nc3 34.Bb3 Bd7 35.Kf1 (worse is 35.Nd5 Ne2 36.Kh2 Nc1–+; 35.Bd5 Nd5 36.Nc2 a2–+) 35...Bb5 36.Ke1 Bc4 37.Bc4 dc4 38.Kd2 a2 39.Nc2 Na4 40.Na1 Kg8 41.g4 fg4 42.hg4 g5 43.f4 gf4 44.ef4 Kf7 45.f5 Kf6 46.d5 Kg5 47.d6 Nc5 (47...Kg4?? 48.d7 Nc5 49.d8Q Nb3 50.Nb3 cb3 51.Qa5+–) 48.Kc2 Kg4 49.f6 Kf5 50.f7 Nd7 51.Kc3 ½–½. Hal1958 – Andy1, playchess.de, 2004.

7.a4 a6 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 Bd6 11.f4 c6 12.c4 (12.Nc3 cb5 13.Nd7 Qd7 14.Nb5 Be7=) 12...cb5 (12...dc4 13.Nc4 Be7 14.b6=) 13.cb5 Be5? (better 13...Qa5!? 14.Bc3 Qb6=) 14.Be5 (14.fe5 Ne4 15.0–0 Be8+–) 14...Ne4 15.0–0 f6 16.Bd4 Qe8 (16...Be8 17.Nc3+–) 17.Qb3 h6 (17...Qe7 18.Rc1+–) 18.Rc1 Nd6 (better 18...Qe7+–) 19.Bc5 Bb5 (19...Nb5 20.f5 ef5 21.Bf8 Kf8 22.Qd5+–) 20.Bd6 Be2 21.Bf8 Qf8 (21...Kf8 22.Qb7 Bc4 23.Rc3+–) 22.Qb7 Ba6 (22...Bc4 23.Rc3+–) 23.Qb6 Bc4 (23...Qe8 24.Rc7+–) 24.Qe6 Kh7 25.Qf5 Kh8 26.d3 Qc5 (26...Ba6 27.Qd5 Qe7+–) 27.Kf2 Bd3 28.Qc8 (28.Qc8 Qc8 29.Rc8 Kh7 30.Rb8+–; 28.Qd3?! Qc1 29.Nc3 Na6 30.Qa6 Qc3 31.Qa8 Kh7 32.Qd5 Qc2 33.Kg3 f5+–) 1–0. DEFFM – GuestTBYT, freechess.org, 2019.

7.a4 Qe8 8.0–0 c6 9.c4 dc4 10.Nc3 cb5–/+ 11.ab5 Bb5 12.Nb5 (12.Ne5!?–/+) 12...Qb5–+ 13.Qc2 Rc8 14.Rfb1 Qb3 (14...Qe8!?–/+) 15.Qc1=+ c3 16.Bc3 Qd5 17.Rb5 Qc6 (17...Rc5!? 18.Rc5 Qc5 19.Bf6 gf6=) 18.Ne5+= Qe8 19.Rb7 Nc6? (better 19...a6+=) 20.Bb5+– a6? (20...Bd6 21.Nf7 Bc7 22.Nh6 gh6 23.Bf6 Qf7 24.Bc6 Qf6 25.Raa7 Ra7 26.Ra7 Bb8+–) 21.Nc6 Bd8 (21...Rc6 22.Re7 (worse 22.Bc6 Qc6 23.Re7 Nd5+–) 22...Qe7 23.Bc6+–) 22.Ne7! Be7 (22...Qe7 23.Re7 Be7 24.Ra6+–) 23.Be8 Re8 24.Qc2 (24.Qf1 Ne4 25.Ra6 Bf8+–) 24...Nd5 25.Qd3 Red8 26.Ra6 Ra6 (26...Rac8 27.Qf1+–) 27.Qa6 Nc3 28.Re7 Nd5 (28...h6 29.d4 Rb8 30.h3+–) 29.Rd7! Rc8 (29...Rd7 30.Qc8 Mate attack) 30.Qc8 1–0. DEFFM – GuestJZPG, freechess.org, 2017.

7.c4 dc4 8.a4 a6 (8...Be8= 9.Nc3 a6 10.0–0 ab5 11.ab5 Ra1 12.Qa1 c6 13.Bc4 cb5 14.Nb5=) 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 c6 12.Nc3 Qa5 13.Ne5 Rc8 14.Nd7+=.

7.c4 dc4 8.Nc3 a6 9.Qa4 c6 10.Bc4 Bd6 11.0–0 cb5 12.Bb5 Nc6 13.Be2 Rc8 14.Qh4+=.

7.c4 dc4 8.Bc4 a6 9.a4= Ne4 10.Nc3 Nd6 11.Be2 ab5 12.ab5 Ra1 13.Qa1 c6 14.bc6=.

7.c4 dc4 8.Bc4 c6 9.a4+= (9.Nc3 cb5 10.Nb5 a6 11.Nbd4 b5 12.Be2 Bd6 13.0–0 e5 14.Nb3–/+) 9...Qb6 (9...a6 10.Na3+= (10.Nc3 ab5 11.ab5 Ra1 12.Qa1 cb5 13.Nb5 Bc6 14.Nbd4=) 10...ab5 11.ab5 cb5 12.Nb5 Ra1 13.Ba1 Bb5 14.Bb5=) 10.Qe2 (10.Nc3 cb5 (10...a6+= 11.a5 Qd8 12.b6 Bd6 13.0–0 Qe7 14.d3+=) 11.ab5 a6 12.0–0 Bd6 13.Qb3 Rd8 14.d3=; 10.Bd4 c5 11.Be5 a6 12.Nc3 ab5 13.ab5 Ra1 14.Qa1=) 10...Bc5 (10...cb5!? A) 11.Bd4 Bc5 (11...Qc7 12.ab5 Rc8+= 13.d3 Bb4 14.Nbd2+=) 12.Bc5 Qc5 13.ab5 Rc8 14.Ra4=; B) 11.ab5 a5 12.Ra4 Ne4 13.0–0 Rc8 14.Ne5=; 10...a6 11.0–0 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Bd3+=) 11.Bf6 (11.0–0 cb5 (11...Qc7+/– 12.Bf6 gf6 13.d4 Bb4 14.Nbd2+/–) 12.ab5 Nd5 13.Nc3 Nc3 14.Bc3+=) 11...gf6 12.d4 (12.Nc3!?+/– cb5 13.ab5 Rc8 14.0–0+=; 12.0–0 cb5 13.ab5 Rc8 14.Nc3+=) 12...Bb4+= (12...Bd6 13.0–0 Rc8 14.Nc3+=) 13.Nbd2 cb5 (13...a6!? 14.ba6+= (14.bc6 Nc6+=); 13...Rc8 14.0–0+=) 14.ab5+/– Bd2 (14...a5!?+/–) 15.Nd2+– (15.Qd2?! Bb5 16.Rb1 a6=; worse is 15.Kd2 a5+/–) 15...a6 (15...f5 16.0–0+–) 16.Qg4 Kh8 17.Qh4 e5 (17...f5 18.Qf6 Kg8 19.Rg1+–) 18.Bd3 (18.Qh6 Qd8 19.Bd3 f5+–) 18...f5 19.Nc4 e4 (19...Qd8 20.Qd8 Rd8 21.Ne5 Kg7+–) 20.Nb6 ed3 21.Qf6 (21.Qf6 Kg8 22.Na8 Bb5 23.Nc7+–) 1–0. Fritz 5.32 – NN, 2003.

7.c4 dc4 8.Bc4 Ne4 9.Qc2 (9.Nc3 Nc3 10.Bc3 a6+=) 9...Bf6 10.d4 (10.Bd3 Bb2 11.Qb2 Qf6+=) 10...Nd6= 11.a4 c6 12.Bd3 cb5 13.Bh7 (13.Ba3 Qa5 14.Qc3 Qc3 15.Nc3 Rc8 16.Bd6 Rc3=) 13...Kh8 14.Ba3 Be7 15.0–0 (15.Nc3 g6 16.Bg6 fg6 17.Qg6 Qa5 18.Qh6 Kg8 19.Qg6 Kh8 20.Qh6 Kg8 21.Qg6 Kh8=) 15...ba4 (better 15...Na6!? 16.ab5 Rc8+=) 16.Bd3+= Nb5 (16...Na6 17.Nc3+=) 17.Be7+– Qe7 18.Ne5 (18.Qa4 Nd6 19.Qb3 Nc6+–) 18...Nd6+= 19.Nc3 Nc6 20.Qe2 (20.Nd7 Qd7 21.Qa4 Rfc8+–) 20...Ne5?? (better 20...Kg8+=) 21.Qh5 (21.Qh5 Kg8 22.Qh7) 1–0. GuestQNBR – GuestQGLS, freechess.org, 2019.

6.Be2 Nbd7

7.0–0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nb6 11.d4 (11.Bb2 Bd6=) 11...Ne4 (11...Bd6 12.Ne5=) 12.Nbd2 Nd6 13.Qb1 (13.Bd3 Bd7 14.Qe2 Qa8=) 13...Bd7 14.Qb3 Qa8 (14...Nf5 15.Bd3+=) 15.Ne5 (15.Bc3 Kh8+=) 15...Be8 (15...Qe8 16.Rb1=) 16.c4 (16.Bc3 Qa4 17.Qa4 Na4+=) 16...dc4= 17.Ndc4 Qa4 The pressure on the isolated pawn grows (17...Nbc4 18.Bc4 Nc4 19.Qc4=) 18.Qa4+= Na4 19.Na5 (better is 19.Nd6 Bd6 20.Rb1+=) 19...f6–/+ 20.Nf3 Bd7 21.Rc1 Rc8 (21...Bb5!? 22.Bb5 Nb5 23.Nb7 Ra8+=) 22.Nd2 Bd8 (22...Bb5 23.Bb5 Nb5 24.Nb7=) 23.Ndb3 (23.Ndc4!?+=) 23...Rb8+= 24.Nc5 (24.Rb1 Ra8+=) 24...Nc5 (24...Bb5 25.Bb5 Nc5 26.Rb1+=) 25.dc5= (worse is 25.Rc5 Ra8 26.Nb3 Ra3–+) 25...Nb5 26.c6 (26.Rd1!? Be8 27.Nb7+=) 26...Bc6 (26...bc6 27.Nc6 Bc6 28.Rc6–/+) 27.Nc6+= bc6 28.Rc6 (28.f4 Nd6+=) 28...Kf7 (28...Nd6 29.Bd3–/+) 29.g4 Be7 30.Bd4 (30.Bd3 Bd6–/+) 30...Nd4–/+ 31.ed4 Bd6 32.Bf3 (32.Rc4 Rb2 33.Bf3 f5–/+) 32...Rb3 (32...Rb4 33.d5–/+) 33.Kg2 Rb4 34.d5 e5 (34...Rd4 35.de6 Ke6 36.h3–/+) 35.Rc1 (35.Be2 e4–/+) 35...e4 36.Be2 (36.Bd1 f5–/+) 36...Rb2 37.Bd1 (37.Bc4 e3 38.Rf1 Rc2–+) 37...e3 (better is 37...Rd2–+) 38.Bc2? (better is 38.Kf3 Rf2 39.Ke3 Rh2 40.Bf3–+) 38...e2 39.Bd3 (39.Bf5–+) 39...Bb4 (better is 39...Rd2 40.Be2 Re2–+) 40.Rc7 Kf8 (40...Kf8 41.Rc8 Ke7 42.Be2 Re2 43.Rc7 Kf8 44.Rc8 Kf7 45.Rc7 Kg6–+) 0–1. Pribyl,Josef – Hernandez,Roman, Warszawa Armies–chT 6th, 1969.

7.0–0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 (11.Ne5 Qe8=) 11...c5 (11...dc4 12.Bc4 Nb6 13.Be2=) 12.d4 dc4 13.dc5 Bc5 (13...Qa5 14.Nc3=) 14.Bc4 Nb6 15.Be2 Nbd5 16.Qc2 Qe7 17.Rc1 b6 18.Bd4 Bd4 19.Nd4 Bb7 20.Nc6 Qc7 21.Nd2 (21.Bd3 Bc6 22.Qc6 Rc8=) 21...Rc8 (21...Ra8 22.Bd3=) ½–½. Panzer,Bernhard (1900) – Suess,Helmut (1985), Mittelfranken–ch, 1995.

7.0–0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bd6 11.Bd4 =.

7.0–0 a6 8.a4 Nc5 9.d3 ab5 10.ab5 Ra1 11.Ba1 Bd7 12.c4 c6 13.Nc3 cb5 14.cb5 Qa5 15.d4 Nce4 16.Qb3 Rc8 17.Ne4 Ne4 18.Bb2 Nd6 The pressure on the isolated pawn grows 19.Ra1 Qa1 20.Ba1 Rc1 21.Bd1 Ra1 22.g3 Bb5 (22...Nb5?! 23.Kg2=) 23.Kg2 Ba4 24.Qa4 Ra4 25.Ba4 b5 26.Bb3 Nc4 27.Kf1 Na5 28.Bc2 b4 29.Nd2 g5 30.f3 h5 31.Ke2 f5 Black prepares g4 32.Kd3 g4 33.e4 Kf7 34.ed5 ed5 35.fg4 hg4 36.Nb3 Nc6 37.Ke2 Ke6 38.Bd3 Bd6 39.Bb5 Nd8 40.Kf2 Nf7 41.Ba6 Ng5 42.Bc8 Kf6 43.Kg2 Ne4 44.Bb7 Nc3 45.h3 gh3 46.Kh3 Kg5 Black intends f4 47.Bc6 f4 48.gf4 Kf4 (48...Bf4?! 49.Kg2–+) 49.Be8 Be7 50.Bf7 Bf6 51.Kg2 Ke3 52.Kf1 Bd4 53.Ke1 Be5 54.Nc1 d4 55.Na2 (55.Bg6–+) 55...d3 56.Bb3 d2 57.Kf1 d1Q (57...Na2 58.Bd1 Nc1–+) 58.Bd1 Nd1 (better is 58...Na2 59.Bb3 Nc1–+) 59.Nb4–/+ ½–½. d2d4 – tabalu, playchess.de, 2002.

7.0–0 b6 8.c4 Bb7 9.d4 Re8 10.a4 c5 11.bc6 Bc6 12.Nc3 Qc7 13.Nb5 Bb7 1–0. DEFFM – GuestWTMP, freechess.org, 2018.

7.0–0 b6 8.a4 Bb7 9.d4 Rc8 10.Nbd2 c5 11.c4 a5 12.Rc1 cd4 13.Bd4 Bc5 14.Bb2 Be7 15.Qb3 Nc5 16.Qa2 Nfe4 17.Rfd1 Bf6 18.Bd4 Nd2 19.Rd2 (19.Qd2? Nb3 (19...Na4?! 20.cd5 Qd5 21.Rc8 Rc8 22.Qe1–/+) 20.Qb2 Nc1 21.Rc1 Bd4 22.Nd4 dc4 23.Rc4 Rc4 24.Bc4 Qf6–+; 19.Nd2?! Qe7=) 19...Ne4 20.Rdc2 Bd4 21.Nd4 Nd6 (21...e5 22.Nf3 d4 23.Rd1=) 22.c5 bc5 23.Rc5 Qb6 24.Rc8 Rc8 25.Rc8 Nc8 (25...Bc8 26.Qd2+=) 26.Qc2 Nd6 27.g3 (27.Nb3 Ne4+/–) 27...Ne4 28.Nc6 Qc5? (better is 28...h6+=) 29.Qc5+– Nc5 30.Nd8?? (better is 30.Na5 Ba8 31.b6+–) 30...Kf8 31.Nb7 Nb7 32.b6 Ke7 33.Ba6 Nc5 34.Bb5 Kd8 35.f4 f6 36.Kf2 e5 (36...Kc8 37.Bc6=) 37.fe5 fe5 38.Kf3 Kc8 39.Bc6 d4 40.ed4 ed4 41.Ke2 h6 ½–½. Borrmann,Fritz – Muenchhalfen,Harald, Leutersdorf Sparkasse op, 2009.

7.0–0 b6 8.c4 dc4 9.Bc4 a6 10.Qa4 (10.a4 Bb7=) 10...Bb7+= 11.Qc2 ab5 12.Bb5 Rc8 (12...Bf3 13.gf3 Ra5 14.Nc3+=) 13.Nc3 c6 (13...Bf3 14.gf3 Bd6 15.d4+=) 14.Be2= Nc5 15.d4 Na6 16.a3 c5 17.Rad1 cd4 18.Rd4 Qe8 19.Rfd1 Nd5 20.Bc4 (20.Qd2 Nc3 21.Bc3 Bf6= (worse is 21...Ba3 22.Ra1 e5 23.Ne5 Qe5 24.Ra3+/–)) 20...Bf6 21.Rg4 g6 (21...Nc3!? 22.Bc3 Bf3 23.gf3 h5=) 22.Nd5+= ed5 23.Bf6 dc4 (23...Qe6 24.Rf4 Rc4 25.Bc3+=) 24.Ne5 (24.Ng5 h6 25.Ne6+–) 24...Qe5?? (better is 24...Qe6 25.Rf4 Rfe8+=) 25.Be5+– Rc7 (25...b5 26.Qf5 Rcd8 27.Rd8 Rd8 28.Bd4+–) 26.Bc7 (26.Bc7 Nc7 27.Rc4+–) 1–0. pierre – keo, internet, 2010.

7.0–0 b6 8.c4 dc4 9.Bc4 Bb7 10.Nc3 (10.Nd4 a6=) 10...c5 (10...a6 11.d3=) 11.d4 Qc7 (11...a6=) 12.Re1 (12.d5!? ed5 13.Nd5 Nd5 14.Bd5=) 12...cd4 13.Nd4?? (13.Qd4 Bd6 14.Be2 Bf3 15.Bf3 Bh2 16.Kh1–/+) 13...Nc5 (better is 13...Qc4 14.Rc1 a6–+) 14.Qc2 (14.Qe2 Bd6 15.h3 Rfd8=) 14...Rac8 (14...Rfd8 15.Rad1=) 15.Rec1 (15.Rac1 Rfd8=) 15...Rfd8 16.a4 (16.f4 Bd6+=) 16...Ba8 (16...Ng4 17.g3+=) 17.Qe2 Qb7 (17...Bd6 18.h3+=) 18.f3 (18.Nc6 Bd6+=) 18...Ncd7 (better is 18...Qc7!?=) 19.Nc6+/– White prepares the advance a5 19...Re8 20.e4 (20.a5 Bc5+/–) 20...Nc5 (20...Bc5!? 21.Kh1 Qc7=) 21.e5 (21.Ne7 Re7 22.Rc2 Rec7+=) 21...Nfd7 22.f4 (22.Ne7 Re7 23.Qe3 Qc7+=) 22...Bf8 23.a5 (23.Rc2 Qc7+=) 23...ba5= 24.Ra5?? (better is 24.Na5 Qb6 25.Qf2=) 24...Qb6–+ 25.Kf1 Bc6 26.bc6 Nb8?? 27.Ra2 Nc6–/+ 28.Nb5 Red8 29.Ba3 Nd4 30.Nd4–/+ Rd4 31.g3 Rcd8 32.Rb2?? Qc6–+ 33.Bb5 Qh1 34.Kf2 Qc1 (34...Qc1 35.Kg2 Ne4 36.Bf8 Nc3–+; 34...Ne4 35.Qe4 Qe4 36.Re2–+) 0–1. Gegonz – Madimbu, internet, 2007. (=1.Nf3 Nf6 2.b4 e6 3.b5 d5 4.Bb2 Nbd7 5.e3 Be7 6.Be2 0–0)

7.0–0 b6 8.d4 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Re8 12.Nbd2 Bd6 13.c4 dc4 14.Nc4 Be7 15.Qc2 Bb7 16.Rc1 Nd5 17.Nce5 Ne5 18.Ne5 (18.de5 Ba3 19.Rd1 Qe7+=). msmsk – Hawk, playchess.de, 2001.

7.0–0 Nb6 8.a4 a5 9.d3 Bd7 10.Nbd2 Qe8 (10...c6 11.c4+=) 11.c4 dc4 12.Nc4 Nbd5 13.Nfe5 Qd8 14.Qc2 Be8 15.h3 (15.Rac1 Nb4 16.Qb3 Nfd5+=) 15...Nb4 16.Qb1 (16.Qd2 c6 17.bc6 Nc6+=) 16...Nd7 (16...Nfd5 17.Re1=) 17.f4 (17.Nf3 c6+=) 17...Bc5 (17...Ne5 18.Be5 f6 19.Bd4+=) 18.d4+= Bd6 (18...Be7 19.Qe4 c6 20.Nd7 Bd7 21.Ne5+=) 19.Nd6 (19.Ba3 Nb6 20.Nb6 cb6+–) 19...cd6 20.Nc4 d5? (20...Nb6 21.Nb6 Qb6 22.f5+=) 21.Nd6?? (better 21.Na5 b6 22.Nc6 Nc6 23.bc6+–) 21...Qb6 22.Ne8 Rae8 (22...Rfe8 23.Ba3+=) 23.Ba3 Ra8 (23...Qd6 24.Bd3 h6 25.Qb3+=) 24.Bb4+– ab4 25.Qb4 Qa5 (25...Ra5 26.Rfc1+–) 26.Qa5 Ra5 27.f5 (27.Rac1 Nf6 28.Bd1 Ra7+–) 27...Nb6 28.fe6 fe6 29.Rf8 (29.Rac1 Rf1 30.Kf1 Ra4+–) 29...Kf8 30.Bd3 g6 31.Kf2 (better 31.Rc1!?+–) 31...Ra4+= 32.Ra4 Na4 33.Kf3 Kg7 34.Kf4 Kf6 35.h4 h6 36.g4 (36.e4 g5 37.hg5 hg5 38.Ke3 de4 39.Be4 Nc3=) 36...Nb6 (better 36...g5!? 37.Kg3 e5 38.hg5 hg5=+) 37.g5+– hg5 38.hg5 Kf7 39.e4 Kg7? (better 39...Nd7+–) 40.Ke5+– Kf7 41.ed5 Nd7?? (41...Nd5 42.Bc4 Nb6+–) 42.Kd6 (42.Kd6 Nf8 43.de6 Ne6 44.Bg6 Kg6 45.Ke6 Kg5 46.d5+–) 1–0. Trigance,Emile – Rodriguez,Juan Antonio (1800), FICGS, 2012.

7.0–0 Nb6 8.a4 a6 9.d3 (9.Nc3 Bd6=) 9...ab5 10.ab5 Bd7 (10...Ra1 11.Ba1 Bd7 12.c4=) 11.Ra8 (11.Nc3 Bb4=) 11...Na8 (11...Qa8!? 12.c4 Qa5=) 12.c4+= c6 13.Qb3 Nc7 14.bc6 bc6 15.Ne5 Bd6 16.f4 Be5? (better 16...Na6!?+=) 17.Be5+– Na6 18.Qa3 Qb6 19.d4 White plans c5 19...Ne4?? (better 19...Ra8 20.Bf6 gf6+–) 20.c5+– (20.c5 Nac5 21.dc5+–) 1–0. DEFFM – GuestYCLW, freechess.org, 2019.

7.0–0 Nb6 8.a4 c5 9.a5 Nc4 10.Bc4 dc4 11.Ne5 Bd7 12.Nc3 Nd5 13.Qg4 Nc3 14.Bc3 f6 15.Nd7 (15.Nc4?! e5 16.Qe4 Bb5=) 15...Qd7 16.Qc4 Rad8 17.e4 Kh8 18.d3 h6 19.f4 Qe8? (better is 19...f5+–) 20.Qe6 Rd6 21.Qc4 Rd7 22.e5 f5 23.e6 Rd8 24.Rfe1 Bf6 25.Bf6 (25.Qc5?! Rc8 26.Qa7 Bc3=) 25...Rf6 26.e7 Rdd6 27.Re5 b6 (27...Rd7 28.Qc5 a6 29.Rae1+–) 28.ab6 ab6 (28...Rb6 29.Ra7 Rb8 30.Qd5+–) 29.Qa2 Kh7 30.Qa8 Qh5 (30...Qa8 31.Ra8 Rde6+–) 31.e8Q Rf7 32.Qg8 Kg6 33.Qf7! Kf7 34.Ra7 1–0. Draeger,Wolfgang – Sawallich,Hermann, eMail–Partie, 1999.

7.0–0= Bd6 8.d3 (8.d4 c6=) 8...e5 (8...a6 9.a4=) 9.Nbd2 (9.c4 a6=) 9...Qe7 (9...a6 10.a4=) 10.c4 c6 (10...e4 11.Ne1=) 11.cd5 (11.bc6 bc6 12.Rb1 Rb8=) 11...cd5 12.a4 a6 13.Qc2 b6 14.Rfc1 (14.Nh4 Nb8=) 14...Bb7=+ 15.Qd1 ab5 16.ab5 Qe6 17.Ra8 (17.Ng5 Qf5 18.Ngf3 Rfe8=) 17...Ra8=+ (18.Rc2 Ra7=+). Hasek,Frantisek – Vetter,Udo, TT–16 ETC, 2005.

7.0–0 Ne4 8.d3 Nd6 9.a4 Bf6 10.d4 c5 11.c4 (11.bc6 bc6 12.Nbd2 c5=) 11...Nc4+= 12.Bc4 dc4 13.Nbd2 Nb6 14.Rc1 cd4 15.ed4 a6 16.Nc4 (16.a5!? Nd5 17.b6=) 16...Nc4 17.Rc4 ab5 18.ab5 Bd7 19.Qb3 Qb6 (19...Ra5 20.b6–/+) 20.Rb1 (20.Ne5 Rfd8+= (20...Qb5?? 21.Rb4 Ra5 22.Rb5 Rb5 23.Qc2+–; worse is 20...Bb5 21.Rc5+/–)) 20...Rfc8 (better is 20...Qb5!? 21.Qb5 Bb5–+) 21.Rc8 Rc8 22.Bc3 Qb5! 23.Qb5 Bb5 24.Bd2 (24.Rb5!? Rc3 25.Kf1–/+) 24...Bc6–+ 25.Ne5 Rd8 26.Be3 Kf8 27.Rc1 Rc8 28.f3 Be7 29.Kf2 f6 30.Nd3 Ke8 31.Nc5 Bd5 32.Rb1 e5 33.Rc1 ed4 34.Bd4 b6 35.Nd3 Rc1 36.Nc1 b5 37.Ke2 Bc4 38.Kd2 Bb4 39.Kc2 Kd7 40.Nd3 Bd3 41.Kd3 Ke6 42.g4 g6 43.Bb2 f5 44.h4 (44.h3 Bd6–+) 44...h5 45.gh5 gh5 46.Bc1 Be7 47.Kd4 Bh4 48.Bf4 Bf2 49.Kc3 h4 0–1. Beloshapkin,Konstantin (2040) – Zinoviev,Sergey (2115), Novosibirsk RUS, Sukharev Mem, 2012.

7.0–0 Re8 8.a4 b6 9.c4 (9.a5 ba5 10.Ra5 c6=) 9...Bb7 10.d4 (10.cd5 Nd5 11.a5 ba5=) 10...c5 11.Nbd2 Rc8 12.a5 (12.Rc1 dc4 13.Nc4 Bd5=) 12...ba5 13.Bc3 dc4 14.Nc4 The pressure on the isolated pawn grows 14...cd4 (14...Nb6 15.Na5 Bf3 16.Bf3+=) 15.Nd4 Nd5 (15...Ne5 16.Ne5 Rc3 17.Nec6 Bc6 18.Nc6=) 16.Ba5 (16.Na5? Nc3 (16...Rc3?! 17.Nb7 Qc7 18.Na5=) 17.Nb7 Qb6–+ (17...Nd1 18.Nd8 Nc3 19.N8c6+=)) 16...N5b6 17.Bb6 ab6 18.Ra7 Rc7 19.Qa1 Bc5 20.Nc6 (20.Nc6 Bc6 21.bc6 Rc6 22.Qb2+=). Welti – Fiechter, OH, 1992.

7.0–0 Re8 8.a4 Bd6 9.c4 =.

7.0–0 Re8 8.a4 Bd6 9.d4 =.

7.0–0 Re8 8.a4= Ne4 9.d3 Bf6 (9...Nd6 10.Nbd2=) 10.c3 (10.Qc1 Nd6=) 10...Nd6 11.Nbd2 Nc5 (11...c5!?=) 12.d4+= Nce4 (12...Nd7 13.c4+=) 13.Ne4 Ne4 14.c4 (14.Bd3 b6+=) 14...c6 (14...c5 15.Ne5+=) 15.Qb3 (15.Bd3 Nd6 16.c5 Nf5+=) 15...Bd7 16.Rfc1 Rc8 (16...a6 17.ba6 ba6 18.Qc2+=) 17.cd5 (17.Bd3 Nd6 18.cd5 ed5 19.bc6 Rc6+=) 17...cd5 (17...ed5 18.Ne5=) 18.Ne5 (18.Rc8 Qc8 19.Ne5 b6+/–) 18...Be5+= 19.de5 Qh4 (19...Qa5!?+=) 20.g3+/– Qg5 21.Bd4 (21.b6 ab6 22.Qb6 Rc1 23.Rc1 Ba4 24.Qb7 Qe7 25.Qe7 Re7+/–) 21...b6 (21...h5 22.b6 ab6 23.Qb6 Rc1 24.Rc1 Ba4 25.Qb7+/–) 22.Qb4+/– Qf5 (22...Nc5 23.a5+/–) 23.f3 (23.f4 h5 24.Rc8 Rc8+–) 23...Nc5+/– 24.g4 (24.Rc3 f6+/–) 24...Qg5 25.f4 (worse is 25.Bc5 bc5 26.Qc3 Qd8=) 25...Qe7 26.a5 Kf8 27.Rc3 Kg8 28.Rac1+– f6 29.ef6 gf6 30.ab6 ab6 31.Bc5 bc5 32.Rc5 Ra8 33.Qb2 Qg7? 34.Rc7 Re7 35.b6 h5 36.b7 Rb8 37.h3 hg4 38.hg4 Kf7 39.Qd4 Rh8 40.g5! Qh7 41.Qf6 Kg8 42.Rc8 Be8+– 43.Qh6! Qe4 44.Qf6 Qh1 45.Kf2 Rh2 46.Kg3 Qg2# 0–1. Schiefelbusch,Dirk (2065) – Reichmann,Oleg (2120), Ruhrgebiet VL2, 2005.

7.0–0 Ne8 8.d4 (8.a4 Nef6=) 8...Bf6 (8...a6 9.a4=) 9.c4+= c6 (9...Be7 10.Nc3+=) 10.a4 (10.bc6 bc6 11.Ba3 Be7+=) 10...Qc7 (10...dc4 11.bc6 bc6 12.Nbd2+=) 11.Nbd2 g6 (11...c5 12.cd5 ed5 13.Ba3+=) 12.cd5 ed5 (12...cd5 13.Ba3 Nd6 14.Rc1+–) 13.Rc1 Qd6 (13...Ng7 14.e4 Qb6 15.bc6 bc6 16.Qc2+–) 14.e4 (14.bc6 bc6 15.Rc3 Qc7+–) 14...Bg7 (14...Be7 15.bc6 bc6 16.Qc2+–) 15.e5+– Qb4 16.Qc2 (16.Qb3 Qb3 17.Nb3 f6 18.bc6 bc6 19.Rc6 fe5 20.de5 Rf4+–) 16...cb5+– 17.ab5 Nb6 (17...f6 18.Nb1 Qe7 19.Ba3+–) 18.Bc3 Qe7 19.Qb3 Nc7 (19...Qe6 20.Bb4+–) 20.Bb4 Qd8 21.Bf8 Bf8 22.Rfe1 (22.Rc2 Bf5 23.Bd3 Bd3 24.Qd3 Qd7+–) 22...Bd7 (22...Bf5 23.Qc3 Ne6 24.Qe3+–) 23.Ra1 (23.Rc2 Ne6+–) 23...Be6 (23...Ne6 24.Rec1+–) 24.Ra5 Qb8 (24...g5 25.h3+–) 25.Rea1 Nc8 (25...Be7 26.Rc1+–) 26.Ng5 (26.Rc1 Nb6+–) 26...b6 (26...Nb6 27.Qc3+–) 27.R5a2 Be7 (27...Bf5 28.Bd3 Ne7 29.Rc1+–) 28.Ne6 fe6 29.Qh3 Kg7 30.Rc1 Qb7 (30...Bd8 31.Rac2 Ne7 32.Qa3+–) 31.Rac2 Bd8 32.Nf3 h6 33.Nh4 Ne7 34.Rc7! Qc7 (34...Qc7 35.Rc7 Combination; 34...Bc7 35.Qe6 Combination) 35.Rc7 Bc7 36.Qe6 Bd8 37.Qf6 Kg8 38.Ng6 Ng6 39.Qg6 Kf8 40.Bh5 (40.Bh5 a6 41.Qf7) 1–0. DEFFM – GuestCJRR, freechess.org, 2018.

7.0–0 h6 8.c4 dc4 9.Bc4 Nb6 10.Be2 Bd7 11.a4 c6 12.Nc3 Nbd5 13.Qb3 Nc3 14.dc3 Qb6 15.c4 cb5 16.cb5 a6 17.Bd4 Qa5 18.Rfd1 Rfd8 19.Bc3 Qb6 20.a5 Qc5 21.Bd4 Qc8?? (better is 21...Qb4 22.Qb4 Bb4 23.ba6 ba6+=) 22.Rac1+– Qb8 (22...Bc6 23.bc6 bc6+–) 23.Be5 1–0. Van Esbroeck,Dirk – Pehl,Ferenc, SN–2011–0–00313, 2011.

7.a4 a6 8.c4 dc4+= 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 Nb6 12.Be2 c6 (12...Bd6 13.0–0=) 13.0–0 cb5 14.Bb5 Bd7 15.Qb3 Bb5 16.Qb5 Qd6 17.Be5 Qc5 18.Qb2 Qb4 19.Qa1 Ra8 20.Qc3 Qc3 21.Nc3 Nfd5 22.Nd5 Nd5 23.Rb1 Bf6 (23...f6 24.Bg3=) 24.h3 (24.Rb7? Be5 25.Kf1 Bd6–+) 24...Be5 25.Ne5 b6 26.Nd7 (26.e4 Nf6 27.f3 Rb8+/–) 26...f5 27.Rb2 (27.Nb6? Rb8–+) 27...Ra6 28.d3 Ra7 (better is 28...Kf7!?=) 29.Nb6+/– Nb6 30.Rb6 Kf7 31.Kh2 h5 32.Kg3 g5 33.h4 Ra4 34.hg5 Rg4 35.Kh3 Rg5 36.Rb4 1–0. mikebaldini – jhonq (1625), gameknot.com, 2015.

7.Nc3 c5 8.bc6 bc6 9.0–0 Rb8 10.Rb1 Qc7 11.Na4 e5 12.c4 Rd8 13.cd5 cd5 14.d4 e4 15.Ne5 Ne5 16.de5 Ne8 17.Bd4 Be6 18.Rc1 Qd7 19.Nc5 Bc5 20.Rc5 a6 21.Ba6 f5 22.Qc2 Bf7 23.a4 g5 24.Rc1 Be6 25.Bb5 Qf7 26.a5 Ra8 27.Bc6 Ra6 28.Qe2 Ra7 29.a6 Rc7 (29...Rc8+–) 30.Be8 Rc5 (30...Qe8 31.Rc7 f4+–) 31.Bf7 (31.Bf7 Bf7 32.Rc5+–; 31.Bc5?! Qe8 32.Qd2 Qb5+–; 31.Rc5?! Re8 32.Rb5 Rc8+–) 1–0. pcmvr (2845) – michelleke (2385), net–chess.com, 2011.

7.Nc3 Nc5 =.

7.Nc3 c6 8.0–0 a6 9.bc6 bc6 10.Rb1 a5 11.Nd4 Qc7 12.f4 Ba6 13.Rf3 Rfb8 14.Rg3 Bd6 15.Bd3 Bd3 16.cd3 e5 17.Nf5 ef4 18.Rg7 Kf8 19.Qe1 fe3 20.Qe3 Bf4?? (better is 20...Bh2 21.Kh1 Qe5 22.Ba3 c5 23.Bc5 Nc5 24.Qc5 Ke8 25.Qc6 Kd8 26.Rf7 Qf5 27.Rf6 Rb1 28.Nb1 Rc8 29.Rf5 Rc6 30.Kh2 Rd6+–) 21.Qe7# 1–0. usingprogram (2020) – leonardosousa (1720), kurnik, 2012.

7.c4 Ne8 8.d4 Bb4 9.Nbd2 dc4 10.Bc4 Nd6 11.0–0 Bd2 12.Nd2 Nc4 13.Nc4 Qg5 14.a4 Qd5 15.Qc2 Qf5 16.Qc3 b6 17.d5 e5? (17...Qg6 18.de6 fe6 19.Rfd1+=) 18.Rfe1 (18.Ne5 Ne5 19.Qe5 f6 20.Qf5 Bf5+–) 18...Bb7? (better is 18...Re8+/–) 19.e4+– (19.Ne5?! Qe5 20.Qe5 Ne5 21.Be5 Bd5+/–) 19...Qg4 20.f3 Qf4 (20...Qg5 21.Ne5 Nc5 22.Ba3+–) 21.Ne3 (better is 21.Ne5!? Ne5 22.Qe5 Qe5 23.Be5 Rac8+–) 21...Rac8 22.Nf5 Qg5 23.Qc2 (23.f4 Qf6 24.fe5 Qg5+–) 23...Qf6+/– 24.Bc3 Rfd8 25.Qb2 a6 26.Rad1 ab5 27.ab5 (27.Qb5 c6 28.Qb4 Kh8 29.dc6 A) 29...Rc6?? 30.Rd7 Rc3 31.Rd8 (31.Qc3?! Rd7 32.f4 ef4 33.Qf6 gf6+=; 31.Rb7 Rc6+–) 31...Qd8 32.Qc3+–; B) 29...Qc6+–) 27...Ra8 28.d6 c6?? (better is 28...Qe6+–) 29.Ne7 Kf8 30.bc6 Bc8 (30...Qe6 31.cb7 Ra2 32.Qb5+–) 31.cd7 Bd7 32.Re2 Rdb8 33.Red2 Qh6 34.Bb4 (34.Be5 b5+–) 34...Qe3 35.Kh1 Qg5 36.Rc1 Ra7 37.Rdc2 Rab7 (37...Rba8 38.Nd5 Kg8 39.Nb6+–) 38.Rc7 Bh3 (38...g6 39.Nd5 Kg7 40.Bc3+–) 39.R1c2 (39.gh3 g6 40.d7 Rc7 41.Rc7+–) 39...Rc7 (39...Bd7 40.Qa2 g6 41.Rb7 Rb7 42.Qa8 Kg7 43.Qb7+–) 40.Rc7 Be6 (40...Rd8 41.Nc6 Bd7 42.Nd8 Qd8 43.Qc3+–) 41.d7 Bd7 42.Rd7 Ke8 43.Rc7 h5 (43...Rd8 44.Qc2 Kf8 45.Rc8+–) 44.Rc8 Rc8 45.Nc8 b5 46.Qd2 Qd2 47.Bd2 Kd7 48.Na7 b4 49.Bb4 g5 50.Nb5 Kc6 (50...Ke6 51.Nc7 Kd7 52.Nd5+–) 51.Na3 (better is 51.Nd6 f6 52.Ne8 h4+–) 51...g4 52.Bf8 f6 (52...gf3 53.gf3 Kd7 54.Nc4+–) 53.Be7 f5 54.ef5 Kd7 55.Bg5 Ke8 56.Nc4 gf3 57.gf3 (57.Ne5? f2 58.h4 f1Q 59.Kh2 Qf5–+) 57...Kf7 58.Ne5 Ke8 59.Kg2 Kf8 60.Kg3 Kg8 1–0. Bonetti,Shane – MacChess 5.0, 2000.

7.d4 Nb6 8.a4 Bb4 9.c3 Ba5 (9...Bd6 10.Ba3=) 10.0–0 (10.Nbd2 Ne4 11.Ne4 de4+–) 10...Nc4 (10...Ne4!?=) 11.Bc4+– dc4 12.Nbd2 Nd5 (12...Qd5 13.Qc2 a6 14.e4+–) 13.Qc2 Nb6 14.Ne5 Qd5 (better 14...a6!?+–) 15.e4+– Qe5?? (15...Qd8+–) 16.de5 Bd7 (16...Rd8 17.Ba3 a6 18.Be7+–) 17.Ba3 Rfd8 (17...Rfc8 18.Bb4 Bb4 19.cb4+–) 18.Be7 (18.Bb4 Bb4 19.cb4 c3+–) 18...Re8 (18...Rdc8 19.Bb4 Bb4 20.cb4+–) 19.Bb4 Bb4 20.cb4 c6 (20...c3 21.Nf3+–) 21.a5 cb5 22.ab6 ab6 23.Nf3 (23.Qc3 Bc6+–) 23...Bc6 24.Nd4 Ra1 (24...Red8 25.Ra8 Ra8 26.Nc6 bc6 27.Qd2+–) 25.Ra1 Rd8 (25...Rf8 26.Nc6 bc6 27.Qd1+–) 26.Nc6 bc6 27.Qd2! Rd2 (27...Rd2 28.Ra8 Mate attack) 28.Ra8 Rd8 29.Rd8 1–0. DEFFM – GuestOweii, freechess.org, 2018.

7.d4 c6 8.a4 a6 9.Nbd2 ab5 10.ab5 Ra1 11.Qa1 c5 (11...cb5 12.Bb5 Nb6 13.0–0=) 12.c4+= cd4 13.Bd4 dc4 14.0–0 (14.Bc4 b6 15.0–0=) 14...b6 (14...e5!? 15.Be5 Ne5 16.Qe5 Bd6+–) 15.Nc4+– Bc5 (15...Bb7 16.Rc1+–) 16.Qa7 Nd5 17.Rd1 Qc7 (17...Qe7 18.Bd3+–) 18.Qc7 Nc7 19.Bc5 bc5 20.Nfe5 Ne5 21.Ne5 f6 22.Nc6 Nd5 23.Rc1 Bd7 24.Rc5 (24.e4 Nb6 25.Rc5+–) 24...Bc6 (24...Kf7!?+–) 25.Rc6+– (25.bc6?! Kf7+–) 25...Rb8 (25...Kf7 26.e4 Ne7 27.Rd6+–) 26.g3 (better 26.e4!? Nf4 27.Bc4 Kf8+–) 26...Kf7 27.Bc4 (27.e4 Ne7 28.Rd6 Ng6+–) 27...Ke7 (27...Rb7 28.Rd6 Rc7 29.Bd5 ed5 30.Kg2+–) 28.e4 Nb6 (28...Nc3 29.Re6 Kd7 30.e5 fe5 31.Re5+–) 29.Be6 g6? (29...Nd7 30.Bd7 Kd7+–) 30.f4 Na4 (30...Nd7 31.Bc4+–) 31.Bb3 Nb6 32.Kf2 (32.Re6!? Kd8 33.Rf6 Nc8 34.Rf8 Kc7 35.Rf7 Kd8+–) 32...Nd7 (32...Nc8 33.Bd5+–) 33.Bc4 Nb6 34.Bd3 Na4 35.Rc7 Kd6 36.Rc6 Ke7 37.Rc7 (37.Ke3 Nb6+–) 37...Kd6 38.Rh7 Nc3 (38...Nc5 39.Ke3 Nd3 40.Kd3 Rb5 41.Rh6+–) 39.Rf7 f5 (39...Kc5 40.Ke3 Rd8 41.Rc7 Kb4 42.Rc4 Kb3 43.b6 Nd1 44.Ke2 Nc3 45.Kd2+–) 40.ef5 gf5 41.Rf5 Ra8 42.Ke3 Nd5 (42...Nd1 43.Ke2 Nc3 44.Kd2 Nd5+–) 43.Rd5! Kd5 44.Be4 (44.Be4 Kc4 45.Ba8 Kc5 46.h4 Kb6 47.h5 Ka7 48.Be4 Kb8 49.b6 Kc8 50.h6 Kd7 51.b7 Kd6 52.b8Q Ke7 53.h7 Kd7 54.Qe5 Kd8 55.h8Q Kd7 56.Qhe8) 1–0. DEFFM (2360) – Rankkobanovic61 (1995), lichess.org, 2020.

7.0–0 c5

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

8.bc6 bc6 9.c4 Ba6 10.cd5 (10.d3 Rb8 11.Qc2 Qb6=) 10...Be2 11.Qe2 cd5 12.Rc1 Nc5 (12...Rb8 13.d3=) 13.Nc3 (13.Bf6 Bf6 14.d4 Ne4=) 13...Rb8 14.d4 Na6 (14...Nce4 15.Ne4 Ne4 16.Ne5+=) 15.Ne5 (15.Qa6 Rb2 16.Qa7+/–) 15...Nc7? (better is 15...Qd6=) 16.Nc6+– Qc8?? (better is 16...Qd7 17.Nb8 Rb8+–) 17.Ne7 (17.Ne7 Kh8 18.Nc8 Rfc8 19.Rab1+–) 1–0. gtate (2050) – smungiu (2015), net–chess.com, 2006.

8.bc6 bc6 9.c4 Rb8 10.Bf6 Bf6 11.Nc3 +=.

8.bc6 bc6 9.c4 c5 10.d4 (10.Nc3 Qa5=) 10...Bb7 (10...Rb8 11.Qc2+=) 11.Nbd2 (11.cd5 Rb8 12.de6 fe6=) 11...cd4 (11...Rb8 12.Qc2=) 12.Bd4 dc4 (12...Rc8 13.Rb1 Qc7 14.Qb3=) 13.Nc4 Bd5 (13...Rc8 14.Rc1=) 14.Nce5 (14.Rc1 Rc8=) 14...Ne5 (14...Rc8 15.Rc1=) 15.Ne5 Qa5 (15...Nd7 16.Bf3 Ne5 17.Be5 Bf3 18.Qf3=) 16.a4 (16.Qd3 Rfc8=) 16...Rac8 17.Qd3 (17.f3=) 17...Rc7 (17...Ne4!? 18.Bf3 f5=) 18.Qb5+= Qb5 (18...Qb4!?+=) 19.ab5+/– (19.Bb5?! Ne4=) 19...Bd6 (19...Ne4 20.Ra7 Ra7 21.Ba7+/–) 20.Nf3 (20.Ra6!? Ne4 21.f3+–) 20...Ra8+= 21.b6 (21.Ra6!? Bc5 22.Bc5 Rc5 23.Rfa1+/–) 21...ab6= 22.Ra8 (22.Ra8 Ba8 23.Bb6=). Globuschuetz – Berlin, Hannover, 2000.

8.bc6 bc6 9.Ne5 Ne5 10.Be5 Bd6 11.Bf6 (11.f4!?=) 11...Qf6–/+ (11...gf6?! 12.f4=) 12.d4 c5 (12...e5 13.c3–/+) 13.c3 Rd8 14.Nd2 e5 15.dc5 Bc5 16.Qc2 Be6 17.Nf3 Bd6 18.Rac1 Qe7 (18...Ba3 19.Rcd1–/+) 19.a4 a5 20.c4 (20.e4 Rac8+=) 20...dc4 21.Bc4 Rac8 22.Qe4 Bc4 23.Rc4 Rc4 24.Qc4 Qc7 (24...e4 25.Nd4 Qe5 26.g3=) 25.Nd2 Qc4 26.Nc4 Bc7 27.g4 g5 (27...Rb8 28.Rc1=) 28.Kg2 (28.Rb1 Rd5+=) 28...f6 (28...Rb8 29.Rc1=) 29.Kf3 (29.Rb1 Rd5+=) 29...Kf7 (29...Rb8!? 30.Rc1 Rb4=) 30.Rb1+= Ke6 31.Rb7 Rd7 (31...Rc8 32.Rb5+/–) 32.Ra7 Bd8 33.Ra6 Kd5 34.Na5 e4 35.Ke2 (35.Kg2 Rf7+/–) 35...Rf7 (35...Rc7 36.Nb3 Rc2 37.Kf1+/–) 36.Nc6 Bc7 37.h3 f5? (better is 37...Bd6+/–) 38.gf5+– (38.gf5 Be5 39.Ne5 Ke5 40.Ra5 Kf6 41.f3 ef3 42.Kf3+–) 1–0. Kupec,Jan – Svancara,Ivo, CiF, 1999.

8.d3 Qa5 9.Nbd2 (9.c4!?=) 9...Qb5–/+ 10.Qc1 Qa5 11.c4 Qc7 12.cd5 ed5 13.e4 (better is 13.Rb1–/+) 13...d4 (13...Bd6 14.Qc2–/+) 14.Nc4 (better is 14.Bd4 Qf4 15.Be3=) 14...b5–+ 15.e5 (15.Ncd2!? Qf4 16.a4–/+) 15...Nd5 16.Nd6 Bd6 17.ed6 Qd6 18.Qg5 (18.Re1 Re8–+) 18...f6 (18...Nf4 19.Rfe1–+) 19.Qd2 Bb7 20.g3 (20.Rfe1 Rae8–+) 20...Rfe8 21.Rfe1 Ne5 22.Nh4 (22.Ne5 Re5 23.Bf3 Rb8–+) 22...Ne7 (22...Qc6 23.Bf3–+) 23.Qf4 (23.f4 N5c6–+) 23...Qd5 24.f3 (24.Qe4 Qe4 25.de4 Be4–+) 24...g5 25.Qf6 gh4 26.Qh4 (26.gh4 Nf3 27.Bf3 Qf3 28.Qf3 Bf3 29.Rac1–+) 26...Nf3 27.Bf3 Qf3 28.Qg5 (28.Re4 Be4 29.de4–+) 0–1. Ramm,C – Weller,W, RLPF–op Hauenstein, 1991.

8.d3 Qc7

9.Nbd2 b6

10.c4 Bb7

11.Qc2 Rac8 (11...dc4 12.Qc4 a6 13.ba6 Ra6 14.d4+=) 12.Rfd1 Rfe8 13.Rac1 e5 14.Nf1 (14.cd5 Nd5 15.Qa4 Bd6=) 14...d4 15.e4 Nf8 16.Ra1 Ne6 17.Bc1 Ra8 18.Ng3 a6 19.a4 ab5 20.cb5 Ra7 21.Nd2 Rea8 22.Nc4 Nd7 23.Bd2 Bc8 24.Rf1 Qb8 25.Bg4 (25.Nf5 Bf8 26.Rfb1+=) 25...Nc7 (25...Nf6!? 26.Bf5 Bd8=) 26.Rfb1 (26.Bd7 Bd7 27.a5 Ra5 28.Ba5 (28.Na5?! ba5 29.f4 Nb5+=) 28...ba5 29.b6+/–) 26...f6? (better is 26...Ne8!?+=) 27.Qb3 Do you see the mate threat? 27...Kh8 (better is 27...Kf8+–) 28.Nf5 h5 (28...Bf8 29.Nfd6 h5 30.Nc8 hg4 31.Na7 Ra7 32.Qd1+–) 29.Bh5 (better is 29.Ne7 Nf8 30.Nc8 hg4 31.N8b6+–) 29...Bf8 (29...Bd8 30.Na5! Nf8+–) 30.Bg6 (30.Qd1 Bb7 31.Bg6 Kg8 32.Qh5 Bd6 33.Qh7 Kf8 34.Qg7) 30...Ne6 (30...Ra6 31.Qd1 Kg8 32.Qh5 Bd6 33.Qh7 Kf8 34.Qg7) 31.Qd1 1–0. St_Jean,Benoit – Gauthier,Daniel, Montreal, 2000.

11.cd5 Nd5 12.a4 Bf6 13.Bf6 N7f6 =.

11.cd5 Nd5 12.Qb3 Rfd8 =.

11.h3 a6+= 12.a4 ab5 13.ab5 e5 14.Qc2 d4 15.e4 h6 16.Ra8 Ra8 17.Ra1 Nh7 18.Ra8 Ba8 19.Qa4 Qb8 20.Nh2 Bd6 21.Ndf1 Nhf8 22.g4 (22.Ng3!?=) 22...Ne6+= 23.Bc1 Kh7 24.Ng3 g6 25.f3 (25.Nf3 Qe8=) 25...Bb7+= 26.Kf2 (26.Bf1 Be7–/+) 26...Ndf8 27.Qa2 Be7 28.Qd2 (28.Kg1 Bh4 29.Nhf1 Bg5 30.Bg5 Ng5–/+) 28...Bg5–+ 29.Qd1 Bc1 30.Qc1 Nf4 31.Bf1 N8e6 32.h4 (better is 32.Ke1–+) 32...Qd8 33.h5 (33.Be2 Qh4 34.Nhf1–+) 33...Qh4 34.hg6 fg6 35.Bg2 (35.Kg1 Qg3 36.Kh1–+) 0–1. Ruhle,Ernst_Albrecht (1610) – Luethi,Marcel (1765), 04sen.Bad Ragaz (SUI) op, 2006.

11.h3 a6 12.ba6 Ra6 13.Qb1 +=.

11.h3 e5 12.Qc2 Rfe8 13.cd5 Nd5 14.Qb3 Kh8 15.Nc4 Will e5 fall? 15...f6 16.Nh4 g6 17.Nf3 Kg7 18.Rfc1 Rad8 (18...a6 19.a4=) 19.a4+= h6 20.Nfd2 f5 21.Bf3 Bf6 22.Na5 White gets the initiative 22...Nf8 23.Nb7 Qb7 24.a5 Ne6 25.ab6 ab6 White creates threats along the open a–file 26.Nc4 Ng5 27.Bd5 Qd5 28.Ra7 Nf7 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 Qd7 39.Ne5 Ne5 40.Be5 Qb5 41.Bf6 Kf6 42.Qf4 The passed pawn on f2 will quickly become a dangerous weapon 42...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 – Schilly, IECG, 1999.

7.0–0 c6

8.a4 cb5 9.ab5 a6 10.c4 Nb6 11.cd5 Nfd5 12.Nc3 Bf6 13.Nd5 Bb2 14.Rb1 Nd5 15.Rb2 a5 16.Nd4 b6 17.Bf3 Bb7 18.Rb1 Rc8 19.Rc1 Qd7 20.Qb3 Rc1 21.Rc1 Rc8 22.Qb2 Ne7 23.Bb7 Qb7 24.Kf1 Qd7 25.Rc8 Nc8 26.Nc6 (26.Qc2 Nd6=) 26...Nd6 (better is 26...Qd3!? 27.Kg1 Nd6–/+) 27.d4 Nc4 28.Qc1 Nd6 29.Qb1 Nc4 30.Qc2 Na3 31.Qb3 Qd6 32.g3 Kf8 33.Ke2 g5 34.e4 Kg7 35.e5 Qd5 Attacking the isolated pawn on b5 36.Qd5 ed5 37.Na7 f6 38.f4 h5 39.Kd3 Nc4 40.Nc8 Kf7 41.fg5 fg5 42.h3 Ke6 43.g4 h4 44.Na7 a4 45.Nc6 Na3 ½–½. Hal1958 – Deep_Trouble, playchess.de, 2004.

8.a4 c5 9.c4 b6 10.a5 a6 11.ab6 dc4 12.Bc4 Nb6 13.Be2 ab5 14.Bb5 Bb7 15.Be2 Ra1 16.Ba1 Qa8 17.Nc3 Rd8 18.Qb3 Nbd5 19.Rb1 Nb4 20.Na4 Bc6 21.Nb6 Qa7 22.Nc4 Be4 23.Rf1 Ne8 24.Bc3 Nd5 25.Ra1 Qb8 26.Qb8 Rb8 27.Be5 Rb1 28.Rb1 Bb1 29.Bb2 Nb4 30.Na5 Bd3 31.Kf1 f6 32.Bd3 Nd3 33.Bc3 e5 34.Ne1 Nb4 35.Ke2 Kf7 36.f3 Nc7 37.Nd3 Nca6 38.g4 Nd5 39.Bb2 Ke6 40.Nc4 g5 41.e4 Ndb4 42.Bc3 Kf7 43.Nb6 Ke6 44.Nb4 cb4 45.Bb2 Nc7 46.Kd3 Bc5 47.Na4 Bg1 48.h3 Kd6 49.Kc4 Ne6 50.Kb4 Nf4 51.Nc3 Nh3 52.Ne2 Bc5 53.Kc4 Kc6 (53...Ng1!? 54.Ng1 Bg1 55.Ba3 Ke6=) 54.d4+/– ed4 55.Nd4 (worse is 55.Bd4 Bd4 56.Kd4 Kd6+=) 55...Bd4 56.Bd4 Kd6 57.Bf6 Ng1 58.Bg5 Nf3? (better is 58...Ke5!?+=) 59.Bf4+– Ke6 60.g5 Nh4 61.Kd4 Ng6 62.Bg3 Ne7 63.Ke3 Kf7 64.Kf4 Kg6 65.Kg4 h6 66.gh6 Kh6 67.Bd6 Nc8 68.Bc5 Kg6 69.Kf4 Kf6 70.e5 Ke6 71.Ke4 Ne7 72.Be7 Ke7 73.Kd4 Ke8 74.e6 Kd8 75.Kd5 Ke8 76.Ke5 Ke7 77.Kf5 ½–½. Ebert,Lutz (1780) – Schreiber,Nico, Mecklenburg VP LL2, 2005. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 e6 4.b5 Be7 5.e3 Nbd7 6.Be2 0–0)

8.a4 c5 9.c4 b6 10.d4 Bb7 11.Nbd2 Qc7 12.Rc1 Qb8 13.Qc2 (13.cd5 Bd5 14.Bc4 Rc8=) 13...Rc8 14.Ne5 Ne5 (14...Bd6 15.f4=) 15.de5+= Nd7 16.cd5 Bd5 17.e4 Bb7 18.Nc4 Rd8 19.Rcd1 Nf8 20.a5 ba5 21.Na5 Qc7 22.Nb7 Qb7 23.g3 (23.f4 Rd1 24.Rd1 Nd7+–) 23...Ng6 (23...Rd1 24.Rd1 Rc8 25.Bc4+=) 24.f4 Qb6 (24...Qc7 25.Bc4+=) 25.f5+– Nf8 26.f6 Rd1 27.Rd1 gf6 (27...Bd8!?+–) 28.ef6+– Bd6?? (better 28...c4 29.Kh1 Bc5 30.Bc4 Rc8+–) 29.Qd2 c4 30.Bd4 (30.Bd4 Bc5 31.Qh6 Bd4 32.Rd4 Qd4 33.Kf1 Qf6 34.Qf6+–) 1–0. DEFFM – GuestKWZH, freechess.org, 2019.

8.a4 Bc5 9.d4 Be7 10.c4 c5 (10...cb5 11.ab5 dc4 12.Nbd2+=) 11.Nbd2 (11.cd5 Nd5 12.Nc3 Nc3 13.Bc3 Bf6+=) 11...b6 (11...a6 12.cd5 Nd5 13.Qc2+=) 12.a5 ba5 13.Bc3 cd4 14.Nd4 (worse 14.Bd4 a6=+) 14...Bb7 15.Nc6 The pressure on the isolated pawn grows (15.Ra5 Qc7=) 15...Bc6 16.bc6 Qc8?? (better 16...Nc5=) 17.cd7+– Qd7 18.Ra5 dc4 (18...Rfb8 19.Bf3+–) 19.Bc4 (19.Nc4 Bd8 20.Ra6 Nd5+–) 19...Qb7 (19...Rfc8 20.Qa1+–) 20.Bd4 Bb4 (20...Rfd8 21.Ra6+–) 21.Rg5 (better 21.Rb5 Qe7 22.Bf6 gf6 23.Qg4 Kh8 24.Bd3+–) 21...h6 (21...Be7+–) 22.Rg7 Kg7 (22...Kh8 23.Bf6 Rg8 24.Qh5 Qg2 25.Rg2 Kh7 26.Qf7 Rg7 27.Qg7) 23.Qg4 Kh7 24.Bd3 Ne4 (24...Qe4 25.Be4 Ne4 26.Qg7) 1–0. DEFFM – GuestCSRV, freechess.org, 2018.

8.c4 a5 9.a3 (9.cd5 Nd5 10.Nc3 N7f6=) 9...cb5 (9...dc4 10.Bc4 Nb6 11.Be2=) 10.cb5 b6 11.a4 White creates threats along the open c–file 11...Bb7 12.Nc3 Rc8 13.d4 Bb4 14.Rc1 Qe7 15.Qb3 Bc3 (15...Bd6 16.Bd3=) 16.Bc3 Rc7 (16...Ne4 17.Bd3+=) 17.Bb2 (17.Bb4 Nc5 18.dc5 ab4 19.cb6 Rcc8+–) 17...Rfc8+= 18.Rc7 Rc7 19.Rc1 Qd6 20.Rc7 Qc7 21.Qc3 Qc3 22.Bc3 Ne4 23.Bb2 Ndf6 (23...g5 24.h3+=) 24.Ne5+/– Kf8 25.f3 Nd6 (better is 25...Nd2!?+/–) 26.Ba3+– Ke7 27.Bd6 (27.Nf7 Kf7 28.Bd6 h5+–) 27...Kd6 28.Nf7 Ke7 29.Ne5 Nd7 30.Nd3 Kd6 31.f4 Nf6 32.Bf3 Ne4 33.Bd1 (33.Be4 de4 34.Ne5 Bd5=) 33...Bc8 (33...g6 34.Ne5+/–) 34.Bc2 Bd7 35.Nf2 Nc3 36.Kf1 (36.Ng4 h5 37.Ne5 h4+–) 36...h6 (36...Ke7 37.Ke1 (37.Bh7?! Na4 38.Bd3 Nb2+=) 37...h6 38.h4+–) 37.Ke1+– Nb5 38.ab5 Bb5 39.Kd2 Bc4 40.Kc3 b5 41.Nd3 g5 42.g3 gf4 43.gf4 Ke7 44.Nc5 b4 45.Kb2 Bb5 46.Kb3 Kf6? 47.Nb7 Bc4 48.Ka4 h5 49.h4 b3 50.Bb1 b2 51.Na5 Ba2 52.Ba2 Kf5 53.Bb1 Kg4 54.Ka3 Kh4 55.Kb2 Kg4 56.Bg6 h4 57.Bf7 Kf5 58.Kc3 h3 59.Bh5 Ke4 60.Kd2 h2 61.Ke2 h1Q 62.Bg6 1–0. Reimer,Karl – Jennewein,Mathias, RLPF–op Hauenstein, 1991.

8.c4 cb5 9.cb5 b6 10.a4 Bb7 11.Nc3 Nc5 12.d4 Nce4 13.Ne4 Ne4 14.Bd3 Bd6 15.Nd2 (15.Qe2 Qe7+=) 15...f5 16.Ne4 (16.Ba3 Ba3 17.Ra3 Qd6=) 16...fe4 17.Be2 Qh4 Threatening mate: Qxh2 18.g3 Qg5 19.Bc1 (19.a5 Rf7=) 19...e5 (19...a6 20.Ba3 Ba3 21.Ra3 ab5 22.Bb5+=) 20.f4 (20.Bb2!?=) 20...ef3+= 21.Bf3 e4 22.Bg2 Rf1 23.Qf1 Rf8 24.Qe2 h5 25.Ba3 Ba3 26.Ra3 Bc8 27.Qa2 Kh8 28.Rc3 Qg4 Threatening mate... how? 29.Qd2 Be6 30.Rc7 Rf7 31.Rf7 Bf7 32.h3?? (better is 32.Qe1=) 32...Qg3–+ 33.Qf2 (33.Kf1 h4–+) 33...Qf2 34.Kf2 g5 (better is 34...h4!? 35.Bf1 Bh5 36.Bg2–+) 35.Kg3 Kg7 36.h4 Kf6 (36...g4!? 37.Bf1–+) 37.hg5–/+ Kg5 38.Bh3 h4 39.Kg2 Kf6 ½–½. Trkn – Des de Mello, itsyourturn.com, 2000.

8.c4 cb5 9.cb5 b6 10.d4 a6 11.Ne5 Ne5 12.de5 Nd7 13.Qc2 ab5 14.Nd2 Bb7 15.Bb5 Bc5 (15...f6 16.ef6 Bf6 17.Bf6 Nf6 18.Qd3+=) 16.Bd4 Rc8 17.Qb3 Qe7 18.a4 Ra8 19.Rfc1 Rfc8 20.a5 Ra5? (better is 20...Bd4 21.ed4 Ra5 22.Bd7 Qd7 23.Qb6 Ra6 24.Rc8 Qc8 25.Ra6 Ba6+/–) 21.Ra5+– ba5 22.Bd7 (22.Bd7 Qd7 23.Bc5+–) 1–0. MT – guest678, ICC, 2004.

8.c4 cb5 9.cb5 Bd6 10.d4 =.

8.c4 dc4 9.Bc4 (9.bc6 bc6 10.Bc4 Nb6=) 9...cb5 10.Bb5 a6 11.Be2 b5 12.d4 Bb7 13.Nbd2 (13.a4 b4+=) 13...Rc8 (13...Nb6 14.Bd3+=) 14.a4= b4 15.Qb3 Bd5 16.Qd3 a5 17.Rfc1 (17.e4 Bb7=) 17...Rc1+= 18.Rc1 Qa8 19.Qa6 (19.Nc4 Rb8+=) 19...Qa6 20.Ba6 Nb6 21.Bb5 Bd6 (21...b3 22.Rc3+=) 22.Ne5 Ne4 23.Ne4 (23.Ndc4 Nc4 24.Nc4 Bc4 25.Rc4 Rb8=) 23...Be4+= 24.f3 Bd5 25.Nc6 (25.Nd3 Rb8=) 25...Ra8 (25...f5 26.Na5 Ra8 27.Nc6 Na4 28.Ra1+=) 26.e4 Bb3 Attacking the isolated pawn on a4 27.Na5 Ra5 Increasing the pressure on the isolated pawn on a4 28.Rc6 Na4 (28...Ra4? 29.Rd6 Kf8 30.Rb6+–) 29.Rd6 f6 30.Ba4 Ra4 31.d5 (31.h4 Kf7+=) 31...ed5–/+ 32.ed5 Ra5 33.Rd8 Kf7 34.Rd7 Kg6 35.d6 Rd5 36.Rc7 (36.Kf2 Ba4 37.Ra7 Rd6 38.Bf6 Kf6 39.Ra4 Rd2 40.Ke3 Rg2 41.Rb4 Rh2 42.Rb6 Kf5 43.Rb5 Ke6–/+) 36...Rd6–+ 37.Kf1 (37.Bc1 Be6–+) 37...Rd2 38.Bc1 Ra2 39.h4 h5 40.g4 (40.Ke1 Rg2 41.Bd2 Bd5 42.Bb4 Bf3–+) 40...Bd1 41.gh5 Kh5 42.Rg7 Bf3 43.Rg8 Bd5 (43...Be4 44.Rh8 Kg4 45.Re8–+) 44.Rh8 Kg4 45.Ke1 (45.Rd8 Be4 46.Rd4–+) 45...Rc2 46.Kd1 (46.Bd2 b3 47.Rb8–+) 46...b3 47.Rg8 (47.Ba3 Ra2 48.Bc1 b2 49.Bb2 Rb2–+) 47...Kh4 (better is 47...Bg8 48.Ba3 Ra2–+) 48.Rh8 Kg4 (48...Kg4 49.Ba3 Bf3 50.Ke1 Re2 51.Kf1 Ra2–+) 0–1. Scholz,Guenter – Schulze,Guenter, BdF, 2001.

8.c4 dc4 9.Bc4 cb5 10.Bb5 Qb6 11.Bf6? (11.Nc3 a6 12.Bd7 Bd7= (12...Qb2 13.Bc8 Rfc8 14.Na4+/–)) 11...Bf6 (< 11...gf6 12.Nc3+=; 11...Nf6?! 12.Nc3=+) 12.Nc3 Bc3 13.Rb1 Qa5 (13...Bd2 14.Qd2 Rd8 15.Nd4=+) 14.Bd7 (14.dc3!? Rd8 15.Qc2=) 14...Bd7=+ 15.dc3 Bc6 16.Nd4 Qa2 17.Nc6 bc6 18.Qc1 (18.Qf3 Qc4=+) 18...Rfb8 19.Rb4 c5 (19...a5 20.Rb8 Rb8 21.Rd1–/+) 20.Rb8 Rb8 21.Qa1 (21.Qd1 Qa5–/+) 21...Qa1 22.Ra1 a5 23.Kf1 Ra8 24.Ke2 (24.Ra4 Kf8–/+) 24...Kf8 (24...a4 25.Ra3–/+) 25.Kd3 (25.Ra4 Ke7–/+) 25...Ke7 26.Kc4=+ Kd6 27.Ra2 Kc6–/+ 28.e4 a4 29.Kd3 Kb5 30.Rb2–/+ Ka5 31.Kc4 a3 32.Ra2 Ka4 33.f4 Rb8 34.g4 Rb2 35.Ra3? Ka3 36.Kc5 Ka4 37.c4 Ka5 38.h4 Rc2 39.f5 ef5 40.gf5 Ka6 41.e5 Kb7 42.e6 fe6 43.fe6 Kc7 44.Kd5 Re2 45.c5 g6 (46.c6 Rf2–+) 0–1. Auener,R – Buechler,Franz, RLPF–ch Seniors, 1991.

8.c4 dc4 9.Bc4 cb5 10.Bb5 Qb6 11.Bf6? Bf6+= 12.Bd7? Bd7 (12...Ba1 13.Nc3 Bc3 (13...Bd7?! 14.Qa1 Rac8 15.d4–+) 14.dc3 Rd8–+) 13.Nc3 Bc6 14.Rb1 (14.d4 Rac8 15.e4 Rfd8+=). Auener,R – Buechler,Franz, Bingen RLP–chS, 1991.

8.c4 dc4 9.bc6 bc6 10.Bc4 Nb6 =.

6.Be2 Ne4

7.0–0= a6 8.a4=.

7.0–0 Bd6 8.d3+= Ng5 9.Nbd2 f5 (9...Nd7 10.c4+=) 10.c4+= c6 11.Ng5 Qg5 12.Nf3 Qh6 13.a4 g5 14.d4 g4 15.Ne5 Nd7 16.c5 (16.Rc1 dc4 17.Rc4 c5+–) 16...Bc7+= 17.Rc1 Ne5 18.de5 Rf7 19.Qd4 Rg7 20.Qf4 (20.bc6 bc6 21.Rb1 Rg5+=) 20...Qh5 (20...Qf4 21.ef4 Bd7 22.f3=) 21.Rfd1 (21.bc6 bc6 22.Rb1 Qg5+–) 21...Bd8 (21...Bd7 22.Bc3+=) 22.h3 (22.Qb4 Bd7+=) 22...Qh4 23.hg4 fg4 24.g3 Qg5 25.Qd4 Rg6 (25...Bd7 26.e4+=) 26.e4 (26.Kg2 Qf5+–) 26...Qh6 (26...Qh5!? 27.Bf1 Bg5+=) 27.bc6 bc6 28.Rb1 Qh3 29.Bc1 Bg5 30.Bg5 (worse 30.ed5 Rh6 31.Qe4 Qh2 32.Kf1 ed5=+) 30...Rg5 31.ed5 h5?? (better 31...ed5 32.Bc4 Be6+=) 32.dc6+– (32.dc6 Ba6 33.Qd7 Re5 34.Bd3 Kf8 35.Qd6 Kf7 36.Qe5 Rf8 37.Ba6 Qf1 38.Bf1 Kg6 39.Bd3 Rf5 40.Bf5 ef5 41.Rd6 Kf7 42.Rb8 h4 43.Qf6) 1–0. DEFFM – GuestGRZK, freechess.org, 2019.

7.0–0= Bf6 8.d4 Nd6 (8...c6 9.bc6 Nc6 10.Nbd2=) 9.c4 (9.Nbd2 a6 10.a4 Be7=) 9...Nc4 (9...dc4 10.Ba3=) 10.Bc4 dc4 11.Qa4 Qd5 (11...a6 12.ba6 Be7 13.Qc4 Ra6 14.Rc1=) 12.Nc3= Qf5 (12...Qh5 13.Qc4 c6 14.Ba3=) 13.Qc4 (13.e4 Qf4+=) 13...c6= 14.e4 Qf4 15.Bc1 Qg4 16.h3 (16.Ba3 Rd8+=) 16...Qh5= 17.Bf4 (better is 17.Ba3 Rd8 18.e5+=) 17...Nd7? (better is 17...Bd7!?=) 18.bc6+/– bc6 (18...Nb6 19.Qb5 Qb5 20.Nb5 bc6 21.Nc7+/–) 19.Qc6+– Nb6 20.Bc7 (20.Rfc1 Ba6+/–) 20...Bd7 (20...Ba6 21.Rfc1+/–) 21.Qd6 Nc4?? (better is 21...Rac8+/–) 22.Qd7+– 1–0. Wall,Bill – Janbaaz, internet, 2002.

6.Be2 Re8

7.0–0 c6 8.a4 Bd7 (8...Nbd7 9.Ne5=) 9.Ne5 Bd6 (9...a6 10.Nc3=) 10.f4 Be5 (better 10...a6!?=) 11.fe5+– Ne4 12.Bd3 (better 12.Bh5 g6 13.Be2+–) 12...Nc5? (better 12...Qg5+–) 13.Bh7!+– Kh7 14.Qh5 Kg8 15.Qf7 Kh8 (15...Kh7 16.bc6 Qh4 17.cd7 Nbd7 18.Qf4+–) 16.Rf3 (16.Rf3 Qh4 17.Rh3 Qh3 18.gh3 cb5 19.ab5+–) 1–0. GuestXSCL – GuestVKKM, freechess.org, 2020.

7.0–0 Qd6 8.c4+= dc4 9.Bc4 (9.Na3 c3 10.dc3 Qd1 11.Rfd1 Nbd7=) 9...Qc5 (9...Nbd7 10.Nc3=) 10.Qb3 Ne4 (10...Nbd7!?+=) 11.d4 Qb6 (11...Qh5 12.Bd3 Nf6 13.Nc3+–) 12.a4 (12.Bd3 Nd6+–) 12...a6 (12...a5 13.Nbd2 Nd2 14.Nd2+–) 13.Nbd2 (13.Bd3 Nf6 14.Nbd2 Nbd7+–) 13...ab5 14.ab5 Nd2 15.Nd2 Ra1 16.Ra1 Nd7 17.Nf3 (17.Bd3 c5+–) 17...Nf6 18.Ne5 Nd7 19.Nf3 Nf6 20.h3 h6 21.Ne5 Nd7 22.f4 (22.Nd3 Nf6+–) 22...Ne5+= 23.fe5 c6 (23...Bd7!?+=) 24.bc6+– Qb3 25.Bb3 bc6 26.Ra7 Bb4 (26...Bg5 27.Kf2 Re7 28.Ra8+–) 27.Ba4 Bd2 (27...Re7 28.Re7 Be7 29.Bc6+–) 28.Kf2+– 1–0. GuestMPBP – GuestDZYB, freechess.org, 2019.

6.Be2 h6

7.0–0 c6 8.a4 b6 9.Nc3 Bb7 10.h3 cb5 (10...a6!?=) 11.ab5+= a6 12.Nd4 Bc5 13.Nb3 ab5 (13...Be7 14.ba6 Na6 15.Nb5=) 14.Ra8+= Ba8 15.Bb5 (15.Nc5 bc5 16.Nb5 Nbd7=) 15...Bc6= 16.Qe2 Qd7 17.Ra1 Bb5 (17...e5 18.Bd3=) 18.Nb5+= Nc6 (18...Be7 19.Ra7 Qd8 20.Qf3+=) 19.Bf6+/– gf6 20.Nc5 (20.d4 Bd6+/–) 20...bc5+= 21.Qg4 (21.c4 Rb8+=) 21...Kh7 22.Qf4 f5 23.Nc3 (23.c4 e5 24.Qh4 Rg8+=) 23...Rg8 24.Rb1 (24.Na4 Qe7=) 24...e5 Black plans d4 (24...d4 25.ed4 Nd4 26.g3–/+) 25.Qf3= e4 26.Qf4 d4 (26...Nb4 27.Rb2=) 27.Ne2 d3 (27...Rg5!?+=) 28.cd3+/– ed3 29.Ng3 Ne7 30.Nh5 (30.Qe5 Nd5+/–) 30...Rg6 (30...Qc6 31.g3 Qe6 32.Qc7+/–) 31.Qc4 (better is 31.Qb8!?+/–) 31...Qd5+= 32.Qd5 ½–½. mic (2185) – pushtiu (2265), net–chess.com, 2009.

7.0–0 Nbd7 8.a4 b6 9.c4 Bb7 10.d3 dc4 11.d4 a5 12.Na3 Ne4 13.Nc4 =. Welti,Manfred – Tejler, corr SOK–89–33, 1989.

7.a4 c6 8.0–0 cb5 9.ab5 Bd7 10.Ne5 b6 11.d4 Bd6 (11...Bc8 12.Ba3+=) 12.c4 dc4 13.Bc4 Qe8 (better 13...a5!?+–) 14.Nc3+– Be5? (better 14...a5 15.ba6 Qc8+–) 15.de5 Nd5 (15...Nh7 16.Qf3 Nc6 17.bc6 Bc6 18.Qe2+–) 16.Nd5 Bb5 (16...ed5 17.Bd5 (17.Qd5?! Be6 18.Qa8 Bc4+–) 17...Bb5 18.Ba8 Bf1 19.Qf1+–) 17.Nf6! gf6 18.ef6 Bc4 (18...Kh7 19.Qd3 Kh8 20.Bb5 Qd8+–) 19.Qg4 (19.Qg4 Kh7 20.Qg7) 1–0. DEFFM – GuestGLSN, freechess.org, 2018.

5.Nf3 a6

6.a4 0–0 7.Nc3 =+.

6.a4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3).

6.a4 c5 7.c4 (7.Be2 0–0=) 7...0–0=+ 8.Qc2 ab5 (8...b6 9.Bd3=+) 9.ab5 Ra1 10.Ba1 Bd7 (10...Nbd7 11.d4=) 11.Ng5 (11.Bf6 Bf6 12.cd5 Qb6 13.de6 Be6+=) 11...g6 12.Qb2 (12.Nf3 Qb6=) 12...Qc7 (12...Qb6 13.Nc3=+) 13.Nf3 (13.Qe5 Qb6=) 13...Qa5 (13...Rd8 14.Qe5 Qa5 15.cd5=) 14.g4 (14.Nc3 Qb4+=) 14...Qb4 (14...dc4 15.g5 (15.Bc4?! Qa4 16.Na3 h6=) 15...c3 16.Nc3+–) 15.Qc2 (better is 15.Qb4 cb4 16.Rg1+=) 15...dc4–/+ (15...Ng4 16.Bc3 Ne3 17.de3 Qc4 18.Bc4 dc4 19.Qe4+–) 16.Bc4 (16.g5 Nd5 17.Bc4 Bb5 18.Bb5 Qb5–/+) 16...Bb5 17.Bb5 Qb5 18.g5 Nd5 19.Na3 (19.d3 Nb4 20.Qc3 Nd3 21.Kd2 e5–+) 19...Qb4 (19...Qa6 20.Qb2 f6 21.Nc2–+) 20.Nc4 (20.Qb2 f6 21.Qb4 cb4–+) 20...Nc6 21.0–0 (21.e4 Nf4–/+) 21...Nb6 (21...b5!? 22.Nce5 Ne5 23.Ne5 Bg5 24.f4–/+) 22.d3–/+ Nc4 23.dc4 b5 24.Nd2 Qa5 (better is 24...Rd8!? 25.Bc3 Qa4 26.Qa4 ba4–+) 25.Qb2= f6 26.Ne4 bc4?? 27.Qb7?? Qa8=+ 28.Qb2? Ne5 29.f3? Nf3!–+ 30.Rf3 Qe4 31.Kf2 Qh4 32.Ke2 Qg5 33.Qb7 Qg2 34.Ke1 Qh1 35.Ke2 Qh2 36.Rf2 Qd6 37.Ke1 Rd8 38.Qf3 Qd3 (39.Re2 Qd1 40.Kf2 Qa1–+) 0–1. Moehring,Norbert – Josting,Friedel, Alpenpokal, 2003.

6.ba6 ba6 7.d4 (7.Be2 0–0=) 7...0–0 (7...Nbd7 8.Nbd2=+) 8.Nbd2 (8.c4 Nbd7=) 8...Bb7 (8...c5 9.dc5 Bc5 10.c4=) 9.Bd3 (9.Rb1 Nbd7=) 9...Nbd7 (9...Nc6 10.a3=) 10.0–0 c5 11.c4 cd4 (11...Rb8 12.Rb1=) 12.Bd4 dc4 13.Nc4 (13.Bc4 Rb8=) 13...Bc5 (13...Nc5 14.Be2=) 14.Bb2 (14.Rb1 Rb8=) 14...Rb8 15.Rb1 Nd5 (15...Be7 16.Qe2=) 16.Rc1 (16.Qc2 N5f6=) 16...Rc8 (16...Qe7 17.Nfe5 Ne5 18.Be5=) 17.Qa4 (17.Qe2=) 17...Be7 (17...Nb4!? 18.Be2 Nb6=) 18.Na5+= Nc5? (better is 18...Ba8 19.Ba6 Rb8+/–) 19.Rc5!+– Rc5? (19...Rc5 20.Nb7; 19...Bc5 20.Nb7) 20.Nb7 Qc7 (20...Qb6 21.Nc5 Qb2 22.Na6+–) 21.Nc5 (21.Qe4 g6 22.Nc5 Bc5+–) 21...Qc5 22.Qe4 Qb6 (22...g6+–) 23.Qh7 1–0. pcmvr (2225) – smungiu (2075), net–chess.com, 2006.

6.Nc3 ab5 7.Bb5 c6 8.Bd3 Nbd7 9.0–0 0–0 10.Qe2 Nc5 11.Rfb1 Bd6 12.e4 e5 13.ed5 e4 14.Ne4 Nfe4 15.Be4 Re8 16.Ne5 Be5 (< 16...Re5 17.Be5 Be5 18.Bh7 Kh7 19.Qe5 cd5 20.Rb5+=) 17.Be5 f6 18.Bh7 Kh7 19.Qh5 Kg8 20.Bd4 Nd7 21.dc6 bc6 22.Qf3 Nb8 23.Be3 Qd5 24.Qd5 cd5 25.a4 Nc6 26.Rb6 Ra6 27.Ra6 Ba6 28.c3 Rb8 29.f4 (29.Bf4 Rb2=+) 29...Na5–/+ 30.Kf2 Rb2 31.Kf3 Nb3 32.Ra3 (32.Rd1!?–/+) 32...Nd2–+ 33.Bd2 Rd2 34.Rb3 Rd3 35.Kf2 Bc4 36.Rb8 Kh7 37.f5 Rc3 38.g4 Rc2 39.Kg3 d4 40.a5 (40.h4 Be2 41.g5 fg5 42.hg5–+) 40...d3 41.g5 fg5 (42.Rd8 d2–+) 0–1. b4_player (2220) – Kolmogorov (2280), GameColony.com, 2003.

6.c4 0–0 (--> 5.Nf3 0–0 6.c4 a6).

6.c4 ab5 7.cd5 (7.cb5 Bf8=) 7...ed5 8.Bb5 c6 9.Be2 Nbd7 (9...Bg4 10.h3 Bf3 11.gf3+=) 10.0–0 0–0 11.a4 Ne4 (11...Bd6 12.Ba3 Ba3 13.Na3+=) 12.d3 Nec5 13.Nc3 Nf6 14.Nd4 (14.Ba3 Re8=) 14...Bd6 (14...h6 15.Nb1=) 15.Ba3 Re8 16.Qc2 Ne6 17.Nf5 (17.Ne6 Be6 18.Rfb1 d4+=) 17...Ba3 18.Ra3 g6 19.Ng3 (19.Nh6 Kf8+=) 19...b5 (19...h5 20.Rb1+=) 20.Qb2 (20.Nb1 b4 21.Ra1 c5+=) 20...ba4 (20...Qe7!? 21.Raa1 d4 22.ed4 Nd4 23.ab5 Ra1 24.Qa1 cb5+=) 21.Ra4 Ra4 22.Na4 Nd7 (22...d4 23.Qc2=) 23.d4 Black king safety improved 23...Qc7 24.Rc1 Nd8 (24...f5 25.f4+=) 25.Qb4 Qa7 26.h3 Kg7 (26...Qc7 27.Nf1+=) 27.Bd3 (27.Bg4 Qc7+=) 27...Qb7 28.Qa5 Qb8 29.Ne2 Qd6 30.Qc3 Nb8 31.Nf4 Ba6 32.Nc5 Bd3 33.Nfd3 Nd7 34.Nb3 Nf6 35.Na5 Re6 36.Nf4 Re7+= 37.Nd3 Ne4 38.Qb4 Qf6 39.Rc2 Ng5 40.Ne5 Re5? 41.de5+– Nf3?? 42.gf3 Qf3 43.Qg4 (43.Qg4 Qe4 44.Qe4 de4 45.Nc6 Nc6 46.Rc6+–) 1–0. Shensnovich,Vladimir (2170) – Obolentseva,Nina, Russia CC op, 2002. (=1.Nf3 Nf6 2.b4 e6 3.b5 Be7 4.Bb2 d5 5.e3 a6)

6.c4 dc4 7.Bc4 ab5 8.Bb5 Bd7 9.Qb3 0–0 10.Nc3 (10.0–0 Bd6=) 10...Nc6 11.0–0 Na5 12.Qc2 Bb5 (12...Bd6 13.d4=) 13.Nb5 c6 14.Nbd4 Qd5 (14...c5 15.Nb3=) 15.d3 (15.Rfb1 Rfd8=) 15...Rfd8 16.a4 (16.Rfd1 c5 17.Nb5 Qh5=) 16...Qh5 (16...c5 17.e4 Qh5 18.Nb5=) 17.e4 (17.Rab1 Nd5=) 17...Qg6 (17...c5 18.Nb5=) 18.Ne5 Qh5 19.f4 (19.Nef3 c5 20.Nb5 Nc6=+) 19...Ng4 (19...Nd7 20.Ndf3=) 20.Ng4 Qg4 21.f5 e5 (21...c5 22.Nb5 c4 23.dc4 Bc5 24.Kh1 Nc4 25.Bc1=+ (< 25.Qc4 Rd2 26.Rg1 Bg1 27.Rg1 Rb2–+)) 22.h3 (22.Nf3 f6=) 22...Qh5 (22...Qg5 23.Nf3 Qe3 24.Kh2 Qd3 25.Qd3 Rd3 26.Be5–/+) 23.Nf3= f6 24.d4 ed4 25.Bd4 (25.Nd4 Rd6+=) 25...Qf7= 26.Bb6 Rd7 27.e5 Qc4 28.Qc4 Nc4=+ 29.e6 Rd5 30.a5 Rf5–/+ 31.Rfd1 Kf8 32.Rd7?? Nb6–+ 33.Rb7 Nc8 34.Rc7 Bd8 35.Rc6 Ne7 36.Nd4 Nc6 37.Nc6 Re5 38.Nd4 Rea5 39.Rb1 Ra1 (40.Ra1 Ra1 41.Kh2 Bc7 42.g3 Ra2 43.Kh1 Bg3 44.e7 Ke8–+) 0–1. Niono,O – Chaudry,Altaf (2260), Dubai ol (Men), 1986.

6.a4 Nbd7

7.c4 0–0 8.Nc3 Nb6 9.cd5 ed5 10.Be2 Bf5 (10...Nc4 11.Bc4 dc4 12.Ne5+=) 11.0–0 Re8 (11...Nc4 12.Qb3 Nb2 13.Qb2=) 12.d3 Bd6 13.Nh4 Be6 14.Nf3 Nc8 15.Qc2 Ne7 16.Rac1 Ng6 17.Qb1 Ne5 18.Ne5 Be5 19.d4 Bd6 20.h3 g6 21.ba6 ba6 22.Qa1 c6 23.Ba3 Bb8 24.f4 Bf5 25.Nd1 (25.g4!? Be6 26.Rf3=) 25...Ne4+= 26.Bf3 (26.Bd3 Nd2 27.Bf5 gf5 28.Rc6 Nf1 29.Kf1 Bc7=) 26...Nd2–/+ 27.Rc6 Nf1 28.Kf1 Bd7 (28...Qd7 29.Qc3+=) 29.Rc5 (29.Bd5!? Bc6 30.Bc6=) 29...Be6+= 30.Qa2 Increasing the pressure on the isolated pawn on d5 30...Bd6 31.Rc1 Ba3 32.Qa3 Qe7 (better is 32...Rb8!?+=) 33.Qe7+= Re7 34.Rc5 Rd8 35.Kf2 Rb7 36.Nc3 Rbd7 37.Ra5 Rd6 38.Be2 Attacking the isolated pawn on a6 (38.g4!?=) 38...Rc8+= 39.Rc5 (better is 39.Nd1!? Rc2 40.Kf1+=) 39...Rc5–/+ 40.dc5 Rc6 41.Nd1 a5 42.Bb5 Rc5 43.Kf3 Bf5 44.Nf2 h5 45.g4 Bc2 46.gh5 gh5 47.h4 Rc3 48.Ke2 Kg7 (48...Bb3 49.Nh1–+) 49.Kd2 Rc7 50.Nd1 Be4 51.Nc3 Bf3 52.Be8 Kf6 53.Bb5 Kf5 54.Be8 Kg4 55.Nb5 Re7 56.Bc6 Kh4 57.Nd4 Bg4 (57...Kg4!? 58.Nf3 Kf3 59.Bd5 Kf2 60.Bh1 Rd7 61.Kc3–+) 58.Bd5 Kg3 59.Bf3? (59.Kd3 h4 60.Bc6 h3–+) 59...Rd7 (better is 59...Bf3 60.Nf5 Kf2 61.Kc3–+) 60.Bc6 Rd8 61.Bb5 (61.Ke1 h4 62.Ne2 Be2 63.Ke2 h3–+) 61...Kf2 62.Bc4 f6 (62...h4 63.Bb5–+) 63.Bd3 h4 64.Nc2 (64.Be4 h3–+) 64...Bf5 65.Ne1 (65.Nd4 Bd3 66.Kd3 h3–+) 65...Bd3 66.Nd3 Rd3! 67.Kd3 h3 0–1. Skaug,Thorbjoern – Portsch,Claudius, Dresden GER, 2013.

7.c4 0–0 8.d4 ab5 9.cd5 (9.ab5 Bb4 (9...Ra1 10.Ba1 Re8 11.c5 Ne4 12.Bd3 Bf6 13.Na3 Be7=) 10.Nc3 Ra1 11.Qa1 Re8 12.Be2 dc4 13.Bc4 Qe7=; 9.cb5 Re8 (9...Nb6 10.a5 Bb4 11.Bc3 Qd6 12.Qb3 Bc3 13.Nc3 Nbd7+=) 10.Bd3 c5 11.bc6 bc6 12.Ne5 c5 13.Nc6 Qb6=) 9...Bb4 (9...Nd5 10.Bb5 c6 11.Bd3 Nb4 12.Be2 b6 13.0–0 Ba6+=) 10.Bc3 (10.Nbd2 ed5 11.Bb5 c6 12.Bd3 Re8 13.0–0 Ne4=) 10...Bc3 11.Nc3 b4 12.de6 fe6 (12...bc3 13.ed7 Bd7=) 13.Na2 Nb6 (13...c5!?+=) 14.Nb4+/– Qd6 15.Qb3 Bd7 16.a5 Nbd5 17.Nd5 ed5 18.Bd3 (18.Qb7 Rfb8 19.Qb8 Rb8–+) 18...b6 19.a6 c5 20.dc5 bc5 21.Bb5?? (better is 21.Qa3+/–) 21...Rfb8–+ 22.0–0 (22.Qa2 Bb5 23.a7 Rb7–+) 22...Bb5 23.Rfb1 Bc4 24.Qa4 Rb1 25.Rb1 Ra6 (25...Ra6 26.Qd1 Ra2–+) 0–1. phildo (1865) – latouche (1880), gameknot.com, 2013.

7.c4 0–0 8.d4 b6 A) 9.Ba3 Bb7 (9...dc4 10.Bc4 ab5 11.ab5 Bb4 12.Bb4 Ra1 13.Bf8 Qf8=) 10.Nbd2 Ba3 11.Ra3 dc4 12.Bc4 ab5 13.Bb5 Qe7=; B) 9.Nbd2 Bd6 (9...Bb7 10.Bd3 dc4 11.Bc4 Re8 12.0–0 Bd6 13.Qe2 ab5+=) 10.Bd3 dc4 11.Nc4 Bb4 12.Nfd2 Bb7 13.0–0 c5=.

7.c4 0–0 8.d4 dc4 A) 9.Nbd2 Nd5 (9...ab5 10.ab5 Ra1 11.Qa1 c3 12.Bc3 Bd6 13.e4 Nh5=) 10.Bc4 ab5 11.ab5 Ra1 12.Qa1 N7b6 13.Ba3 Bd7=; B) 9.Bc4 Nb6 (9...ab5 10.Bb5 Nb6 11.Nc3 Ra5 12.0–0 c6 13.Bd3 Nbd5=) 10.Bd3 ab5 11.ab5 Ra1 12.Ba1 Nbd5 13.0–0 Nb4=.

7.c4 0–0 8.d4 Ne4 A) 9.Nc3 Ndf6 (9...ab5 10.ab5 Ra1 11.Qa1 Nc3 12.Bc3 Re8 13.c5 Nf6=) 10.Bd3 Nc3 11.Bc3 dc4 12.Bc4 Nd5 13.Qc1 Nc3=; B) 9.Nbd2 Ndf6 (9...ab5 10.ab5 Ra1 11.Ba1 Ndf6 12.Bd3 Nd2 13.Qd2 dc4=) 10.ba6 b6 11.cd5 ed5 12.Bb5 Ba6 13.0–0 c6=.

7.c4 0–0 8.d4 Re8 A) 9.Nc3 c5 (9...ab5 10.ab5 Ra1 11.Qa1 Bb4 12.Bd3 dc4 13.Bc4 Qe7=) 10.bc6 bc6 11.Bd3 c5 12.0–0 Rb8 13.Rb1 cd4=; B) 9.Nbd2 ab5 (9...Bb4 10.Qb3 a5 11.Bc3 Bd6 12.c5 Bf8 13.Bd3 e5+=) 10.ab5 Ra1 11.Qa1 c5 12.bc6 bc6 13.Bd3 c5=.

6.ba6 Na6

7.Bb5 c6 8.Be2 0–0 9.0–0 Ne4 10.d3 Bf6 11.Qc1 Nec5 12.d4 Na4 13.Ba3 Re8 14.c4 e5 15.Ne5 Be5 16.de5 Re5 17.Nc3 Qa5 18.Na4 Qa4 19.Rd1 Qa5 20.Qb2 dc4?? 21.Qe5!!+– Qa3 22.Rd8 Qf8 23.Qe8 h5 24.Qf8 Kh7 25.Bh5 Kh6 26.Qh8 Kg5 27.Qg7 Kh4 28.Qg3 Kh5 29.Rh8# 1–0. GLChess211 – Ozwald043, computer chess game, 2000.

7.Bb5 Bd7 8.Bd7 (8.Be2 0–0=+) 8...Qd7 9.0–0 0–0 10.Nc3 (10.d3 b5=+) 10...c6 (10...Bd6 11.Ne2=+) 11.d3 b5 (11...Nc5 12.d4 Nce4 13.Ne4 Ne4 14.Ne5=+) 12.a4 ba4 (12...b4 13.Ne2=+) 13.Na4= Rfb8 14.c4 (14.Qe2 Nc7=) 14...Nc7 (14...Ra7 15.Be5 Rbb7 16.cd5 Nd5 17.d4=) 15.Ne5 (15.Qc2 dc4 16.Ne5 Qe8 17.Nc4 Ncd5=) 15...Qe8 16.Bd4 Bd6 (16...Ra5 17.cd5 Ncd5 18.Nc4=) 17.Nc5 Ra1 18.Qa1 Ra8 19.Qb2 dc4 (19...Rb8 20.Nb7 Bf8 21.Rb1+=) 20.dc4 (20.Nc4 Be7+=) 20...Na6 (20...Bc5 21.Bc5 Na6 22.Bb6+=) 21.Na6+= Ra6 22.c5 Be5 23.Be5 Nd7 24.Bg7 e5 25.Bh6 Nc5 (25...Ra8 26.Qb4 Qe6 27.Rd1+/–) 26.Qc3 Qe6 27.Qc5 Qh6 28.Qe5 1–0. Rosner,Dirk – Neudecker, Tiger–Schachclub, 1999.

7.c4 dc4 8.Bc4 0–0 9.0–0 c6 10.a3 b5 11.Be2 Bb7 12.d3 Qc7 13.Ne5 Bd6 14.f4 Be5 (14...Nd5!? 15.Qc1 Nc5+=) 15.fe5 Nd5 16.Qd2 Qb6 17.d4 c5 18.e4 Ne7 19.Bf3 (19.dc5!? Qc5 20.Bd4+=) 19...Rfd8+= 20.Qg5 (20.Bh5!? Ng6 21.Qf2+=) 20...Ng6–/+ 21.Nd2 (21.dc5 Qc5 22.Kh1 Qc2–/+) 21...cd4–+ 22.Bh5 Nc5 23.Bg6 hg6 24.Qf4 Rf8 (better is 24...Rd7 25.Rf3 Na4–+) 25.Bd4= Qc7?? (25...Qc6!?=) 26.Qe3 (better is 26.Rac1+–) 26...Nd7 The isolani on e5 becomes a target 27.Rfc1 Qb8 28.Rcb1 Ne5 29.Rb5 Nc6 30.Rab1 Nd4 31.Qd4 Rd8 32.Qb4 (32.Qf2 Qa7 33.R1b2+= (worse is 33.Rb7 Qf2 34.Kf2 Rd2 35.Ke3 Rg2–/+)) 32...Qa7+= 33.Kh1 Bc6 34.Rb6 Qa3 35.Qa3 Ra3 36.Nc4 (better is 36.Rc6 Rd2 37.h4–/+) 36...Be4?? (better is 36...Rad3 37.Nb2 R3d6–+) 37.Na3+/– Bb1 38.Rb1 Rd2 39.Nc4 Ra2 40.Ne5 Ra7 41.h3 Kh7 42.Nc6 Rc7 43.Nd4 Kg8 44.Nf3 f6 45.Kh2 Kf7 46.Rb6 Ra7 47.Nd4 e5 48.Nc6 Rc7 49.Rb7!? Rb7 50.Nd8 Ke7 51.Nb7 Ke6 52.Kg3 f5 53.Kf3 g5 54.Nd8 Kf6 55.Nc6 Ke6 56.Nb4 Kf6 57.Nd5 Ke6 58.Nc7 Kf6 59.Ke3 g6 60.g3 Ke7 61.Kd3 Kd6 62.Na6 Kd5 63.Nb8 Kd6 64.Na6 Kd5 65.Nb4 Kc5 66.Nc2 Kd5 67.Ne1 (better is 67.Ne3 Kc5 68.Ke2+=) 67...Kc5? (better is 67...f4=) 68.Nf3?? (better is 68.Ke3+–) 68...e4–+ 69.Ke3 ef3 70.Kf3 Kd5 71.Ke3 Ke5 72.Kf3 f4 73.g4 Kd4 74.Ke2 (74.h4–+) 74...Ke4 75.Kf2 f3 76.Ke1 Ke3 77.Kf1 f2 0–1. alexp (2475) – tomy (2475), net–chess.com, 2016.

7.Be2 0–0 =.

5.Nf3 c6

6.a4 Bd7 7.d4 (7.Be2 a6=) 7...Ne4 (7...cb5 8.ab5 Qb6 9.Ba3=) 8.Bd3= Nd6 (8...Qb6 9.c4=) 9.Qe2 (9.Na3 Qa5 10.Qd2 Qd2 (10...Qa4? 11.Nb1 Nc4 12.Ra4 Nd2 13.Nbd2+–) 11.Nd2 a6=) 9...a6 10.bc6 (10.ba6 Na6 (worse 10...ba6 11.0–0+=) 11.Bc3 c5 12.dc5 Nc5=+) 10...Nc6=+ 11.0–0 Nb4 12.Ne5 Nd3 13.Qd3 (13.cd3 Rc8=) 13...Bc8 (13...0–0 14.Ba3=+) 14.Nd2= f6 15.Nef3 0–0 16.e4 de4 (16...b6 17.e5 fe5 18.Ne5=) 17.Ne4 Ne4 (17...b6 18.Rfe1=) 18.Qe4 Bd7 19.d5 (19.Rfb1 Qc8=) 19...ed5 20.Qd5 Rf7 21.Rfd1 (worse 21.Qb7 Rb8 22.Qa6 Rb2–+) 21...Bc6 22.Qh5 (22.Qb3 Qc7=) 22...Qf8 (22...Qc7 23.Nd4=+) 23.Nd4= Be4 (23...Rc8 24.Qf5=) 24.Qe2 (24.Re1 Bg6 25.Qd5 Qd8=) 24...Bg6 25.h4 (25.Qc4 Qc8 26.Qb3 Bd6=) 25...h6 (25...Bc5 26.h5 Re7 27.Qg4=) 26.Qg4 (26.h5 Bh7=) 26...Bh7= 27.Nf5 (27.Qf3 Rc8=) 27...Bf5 28.Qf5 Rc8 (28...Qc8 29.Qd3=) 29.Bd4 (29.Rd7 Rc5 30.Qe6 Rc2 31.Rb7 Bc5+–) 29...Bc5= 30.c3 Kh8 (30...Bd4 31.cd4 Rd8 32.d5=) 31.Rab1 Rfc7 32.Bc5 (32.a5 Qe8+=) 32...Rc5= 33.Qf3 (33.Qe4 b5=) ½–½. Butze,Roland – Apel,Arno, corr DDR, 1976.

6.a4 Nbd7 7.d4 Ne4 8.Bd3 0–0 (8...Qa5 9.Nbd2=) 9.0–0 Ndf6 (9...f5 10.c4=) 10.c4+= c5 (10...Qc7 11.Qc2+=) 11.Ne5 Nd7 (11...dc4 12.Nc4 cd4 13.Bd4+=) 12.Qc2 (12.f3 Nd6 13.cd5 ed5 14.Nd7 Bd7+=) 12...Ne5 (12...f5!?+=) 13.de5+– f5 Black prepares the advance d4 14.ef6 (14.Rd1 Qc7+–) 14...Nf6 15.Bf6 Bf6 16.Bh7 Kh8 Black plans d4 17.Ra3 d4? (17...a6!?+=) 18.ed4+– Qd4? (better 18...cd4 19.Rh3 Bg5+–) 19.Rh3+– e5 (19...Rd8 20.Nc3 Bg5 21.Rd1+–) 20.Rd1 Qd1 (20...Qf4 21.g3 Qg4 22.Bf5 Qh3 23.Bh3 Bh3+–) 21.Qd1 Bh3 22.Bg6 (22.gh3?! Kh7 23.Nc3 b6+–) 22...Be6 (22...Bg5 23.Qh5 Bh6 24.Qh3 Rf6+–) 23.Qh5 Kg8 24.Qh7 1–0. GuestNKRJ – Guestplayer, freechess.org, 2020.

6.c4 a6 7.a4 (7.bc6 Nc6 8.cd5 ed5=) 7...Nbd7 8.Nc3 Nb6 (8...ab5 9.ab5 Ra1 10.Ba1=) 9.Qb3 (9.ba6 ba6 (< 9...Ra6 10.cd5 Ra5 11.dc6+/–) 10.Ne5 Nc4 11.Nc4 dc4 12.Bc4 Rb8=) 9...ab5 10.ab5 (10.cb5 c5=) 10...Ra1=+ 11.Ba1 0–0 (11...dc4 12.Bc4 Nc4 13.Qc4=) 12.bc6= bc6 13.Ne5 Qc7 14.d4 Nbd7 15.Nd7 Bd7 16.c5 (16.Bd3 Rb8 17.Qc2 Bd6=+) 16...Qb8 (16...Rb8!? 17.Qc2 e5=+) 17.Qb8= Rb8 18.Be2 (18.Bd3 Kf8=) 18...Ne4 19.0–0 (19.Bd3 f5=) 19...Nc3 20.Bc3 f6 (20...Rb3 21.Rc1=) 21.Ra1 (21.h3=) 21...Bd8 22.h3 Bc8 23.Ra7 Bb7 24.Ba6 Ba6+= 25.Ra6 Rc8 26.g4 Kf7 27.Ba5 Ba5= 28.Ra5 Rc7 29.Kg2 e5 30.Kg3 Re7 31.Ra6 Re6 32.h4 h6 33.h5 ed4 34.ed4 Ke7 35.f3 Kf7+= 36.Kf4 Kf8 37.Kf5 Kf7 38.Ra7 Re7 39.Re7 Ke7 40.Kg6 Kf8 41.f4 Kg8 42.g5 fg5 43.fg5+= hg5 44.Kg5 Kf7 45.Kf5 Ke7 ½–½. Schmidt,Gregor – Schleuss,Tobias, Bad Kreuznach, 1995.

6.bc6 bc6 7.Bd3 0–0 8.Nc3 Nbd7 (9.Rb1 e5=+). unhandmeyoubrute (2000) – geldridge (2240), net–chess.com, 2007.

6.d4 0–0 7.a4 a6 8.Nc3 Bd7 9.Ne5 Bb4 10.ba6 Qa5 11.Qd3 Ne4 12.ab7 Ra7 13.Nd7 Nd7 14.Be2 Nc3 15.0–0 Ne2 16.Qe2 Rb7 17.c3 Bd6 18.Rfb1 Rfb8 19.Qc2 Nf6 20.Qc1 Ne4 21.f3 Nf6 22.Ra2 c5 23.h3 c4 24.Rba1 Bg3 25.Qc2 Rb3 26.Qd2 h5 27.Qc1 h4 28.Qd2 e5 29.Qc2 ed4 30.ed4 Bf4 31.Kf1 Nh5 32.Re1 Ng3 33.Kg1 g6 34.Kf2 Nf5 35.Re2 Kg7 36.Kg1 Qb6 37.g4 hg3 38.a5 Qb5 39.Qd1 Ra8 40.Qa1 Ra6 41.Kh1 Nd4 42.cd4 c3 43.Bc3 Rb1 0–1. Machete99 (2220) – garmatico (2105), ICC, 2002.

6.Be2 Nbd7 7.0–0 0–0 8.c4 dc4 9.Bc4 cb5 10.Bb5 Qb6 11.Bf6? (11.Nc3 a6 12.Bd7 Bd7= (< 12...Qb2 13.Bc8 Rfc8 14.Na4+/–)) 11...Bf6=+ (< 11...gf6 12.Nc3+=; 11...Nf6?! 12.Nc3=+) 12.Bd7? (12.Nc3 Bc3 13.Rb1 Bf6 14.Bd7 Qc7 15.Bc8 Rac8=) 12...Bd7 (better is 12...Ba1 13.Ba4 Rd8–+) 13.Nc3 Bc6 14.Rb1 (14.d4 Rac8 15.e4 Rfd8=+). Auener – Buechler, Bingen, 1991.

6.Ne5 Bd6 =.

6.Ne5 Nbd7 =.

6.a4 0–0

7.Nc3 a6 8.Be2= ab5 (8...Nbd7 9.bc6 bc6 10.Rb1=+) 9.ab5 Ra1 10.Qa1 cb5 (10...c5 11.0–0=) 11.Nb5 Bd7 12.Ne5 (12.0–0 Bb5 13.Bb5 Nc6=) 12...Bc6 (12...Bb5 13.Bb5 Qc7 14.c4=) 13.0–0+= Nbd7 14.Nc6 (14.Rb1 Ne5 15.Be5 Qd7+=) 14...bc6= 15.Nd4 Qc7 16.f4 (16.Qa4 Rc8=) 16...Re8 (16...Rb8 17.Rb1=) 17.Nf3 (17.Qa4 Rc8=) 17...Bf8 (17...Rb8 18.c4=) 18.Ne5 (18.c4 Rb8=) 18...Be7 (18...Rb8 19.Nd7 Nd7 20.c4=) 19.Nd7 (19.Qa6 Rc8=) 19...Qd7 20.Be5 Rc8 (20...Rd8 21.f5=) 21.Rb1 Ne8 (21...Qe8 22.c4=) 22.Rb3 (22.Qa6 Nd6=) 22...f6 23.Bc3 (23.Bb8 Bd6 24.Qb2 Qd8 25.Bd6 Nd6=) 23...Nd6 24.d3 Nf5 25.Bd2 c5 (25...Bc5 26.d4 Bd6 27.Qa4=) 26.Qb1 (26.Qa6 Nd6=) 26...Bd6 (26...c4 27.Rb7 Qd8 28.Bg4=) 27.Rb7 Qe8 (better 27...Rc7!? 28.Rb8 Rc8=) 28.g4 Nh4 29.Be1 (29.Qb5 Qb5 30.Rb5 Rc6=) 29...Ng6 30.Bg3 (30.Qb6 Rd8=) 30...d4 (better 30...Ra8=) 31.Bf3 (better 31.Qb6!? Rb8 32.Rb8 Qb8 33.Qb8 Bb8 34.Kf2=) 31...de3–/+ 32.f5 (32.Qe1 Bf4 33.Bf4 Nf4 34.Qe3 Qa4–/+) 32...Bg3 33.hg3 Ne5 34.Be4 (34.Be2 Nc6 35.c3 ef5 36.gf5 Qe5–+) 34...Ng4 35.Kf1 ef5 36.Bf5 Nh6?? (36...e2 37.Ke1 Qe5 38.Bg4 Qg3 39.Ke2 Qg2 40.Kd1 Qg4 41.Ke1 Re8 42.Kd2 Re2 43.Kc3 Qd4 44.Kb3 c4 45.dc4 Re3 46.Ka2 Qc4 47.Rb3–+) 37.Qb3?? (better 37.Bc8 Qc6 38.Kg1+–) 37...Kh8?? (better 37...c4 38.Rg7 Kg7 39.Qb7 Nf7 40.Qc8 Qe5–+) 38.Bc8= Qc6 (38...Qc8?? 39.Rb8 Qg8 40.Rg8 Ng8 41.Qc4+–) 39.Ke2 Qg2 40.Ke3 Qg3 41.Kd2 Qf4 42.Ke2 Qh2 43.Ke3?? (better 43.Kd1+–) 43...Qg3= 44.Kd2 Qf4 45.Ke2?? (45.Ke1 Qg3 46.Kd1 Qg1 47.Kd2 Qg5 48.Kc3 Qe5 49.Kc4 Qd4 50.Kb5 Qe5+–) 45...Qh2 46.Kf3 (46.Kd1 Qg1 47.Kd2 Qg5 48.Kc3 Qe5 49.Kc4 Qd4 50.Kb5 Qd8+–) 46...Qh1 47.Ke2?? (better 47.Kf2+–) 47…Qh2= 1–0. Riveline – Antonni, Val Thorens, 1993.

7.Nc3 Bd6 8.Be2=+.

7.c4 a5 8.Be2 Nbd7 9.0–0 dc4 10.Bc4 Nb6 11.Be2 cb5 12.Bb5 Bd7 13.Nc3 Bb5 14.Nb5 Nbd5 15.Bd4 Nd7 (15...Rc8 16.d3=) 16.d3 Bf6 17.Rc1 Bd4 18.Nfd4 Qe7 19.e4 Nb4 20.Rc7 Rfb8 21.f4 Qd8 (21...Na6 22.Rc3=) 22.Qb3 (better 22.Qg4 Nf6 23.Qg5+=) 22...Nb6? (22...Na6 23.Ne6 Qe7+–) 23.Ne6! fe6 24.Qe6 Kh8 25.Qb6 Qd3 (25...Na6 26.d4+–) 26.Rb7 Re8?? (better 26...Rb7 27.Qb7 Rf8+–) 27.Nc7 Ra6 1–0. DEFFM – GuestTKJG, freechess.org, 2018.

7.c4 a5 8.Be2 Nbd7 9.0–0 Qc7 10.d4 dc4 11.Bc4 Ne4 12.Bd3 Ndf6 (12...f5!?+–) 13.Qc2+– Nd6 14.e4 Nfe8 (14...Nde8 15.Nc3+–) 15.Rc1 (15.Nc3 f5 16.e5 Nf7+–) 15...g6 (15...f5 16.e5 Ne4 17.Be4 fe4 18.Qe4+–) 16.d5 (better 16.Nbd2!?+–) 16...ed5+– 17.ed5 1–0. DEFFM – GuestVJSZ, freechess.org, 2018.

7.c4 Bb4 8.Nc3 Nbd7 9.cd5 cd5 10.Be2=.

7.c4 Bb4 8.Nc3 Nbd7 9.Be2 Re8 (9...e5 10.cd5 e4 11.Nd4=) 10.0–0 Nf8 (10...dc4 11.bc6 bc6 12.Bc4=) 11.Ne5 (11.d4 cb5 12.ab5 dc4 13.Bc4 Ng6+=) 11...Bd7 (11...N8d7 12.d4 Ne5 13.de5=) 12.f4 (12.d4 dc4 13.Bc4 Rc8+=) 12...Rc8 13.Na2 Bd6 14.Rf3 (14.Bd4 dc4 15.Nc4 Bb8+=) 14...Ne4 (14...dc4 15.Nc4 Be7 16.Ne5=) 15.d3+= Nc5 16.Rg3 (16.d4 Ne4+=) 16...f6= 17.Nd7 Qd7 (better 17...Nfd7!? 18.bc6 bc6 (worse 18...Rc6 19.cd5 Rc8 20.de6 Ne6 21.Rb1+–) 19.cd5 ed5=) 18.Bf6+– Ng6 19.Bb2 (19.Bd4 dc4 20.dc4 Red8+–) 19...dc4 20.dc4 Ne4 (20...cb5 21.ab5 Red8 22.Qc2+–) 21.Rg6 (21.Rg4 cb5 22.ab5 Red8+–) 21...hg6+= 22.Qd3 (22.Bd3!? Nf6 23.Bg6+=) 22...Nc5= 23.Qg6 Qf7 (23...Na4 24.Bd4 Bc5 25.bc6 bc6 26.Qe4=) 24.Qf7 (24.Bh5 Qg6 25.Bg6 Red8+=) 24...Kf7 25.Bh5 (25.Rd1!? Na4 26.Bg7+=) 25...g6= 26.Be2 (26.Bd1 e5 27.bc6 bc6=+) 26...Na4=+ 27.Nc3? (better 27.Bd4 c5 28.Bc3=+) 27...Nb2–+ 28.Ra7 Rc7 (28...Bc5!? 29.Rb7 Re7 30.Re7 Ke7–+) 29.Ne4 (29.Ra2 Bc5 30.Kf2 e5–/+) 29...Rd8 (better 29...Bf8 30.bc6 Rb8 31.cb7 Rcb7–/+) 30.Ng5? (30.b6 Rcd7 31.Ra2 Nd1 32.Bd1 Bf4 33.ef4 Rd1 34.Kf2 R1d4–/+) 30...Kf6?? (better 30...Ke7 31.b6 Rcd7–+) 31.Ne4 (31.b6 Rcd7 32.Ra2 Nd1 33.Ne4 Ke7 34.Bd1 Bf4 35.ef4 Rd1 36.Kf2 R1d4–/+) 31...Kf5 (31...Kg7 32.b6 Rcd7=+) 32.bc6?? (32.Ng3 Kf6 33.Ne4 Kg7 34.Ng5–/+) 32...bc6 (better 32...Ke4 33.cb7 Ke3–+) 33.Nd6+– Rd6 34.Rc7 Ke4 (34...e5 35.fe5 Ke5 36.h4+–) 35.Bf3 (better 35.Kf2!? Rd2 36.Rc6 e5 37.Rg6 Nc4+–) 35...Ke3 36.c5 (36.Rc6?! Rc6 37.Bc6 Kf4 38.g3 Ke5+–) 36...Rd2 (36...Rd4 37.Rc6 Rc4 38.Re6 Kf4 39.c6 Rc1 40.Kf2 Nd3 41.Ke2+–) 37.Rc6 Kf4 38.Re6 Nd3 (38...Rc2 39.Be4 Rc5 40.g3 Ke3 41.Bg6 Kf3 42.Be4 Ke3 43.h4+–) 39.h3 (better 39.Re4!? Kf5 40.Rd4 Ke5+–) 39...Nc5 (39...Ne5 40.c6+–) 40.Rg6 Nd3 (40...Kf5 41.Rb6+–) 41.Kh2 (41.Rd6 Ke3+–) 41...Ne5 42.Re6?? (better 42.Rf6 Kg5 43.Rf8+–) 42...Kf5 (42...Nf3 43.Kh1 Rd1 44.Re1 Re1) 43.Rb6 (43.Re8 Nf3 44.Kg3 Nd4=) 43...Nf3=+ 44.Kg3 Ne5 (44...Ne1 45.Rb5 Ke4 46.Rb4 Ke5 47.Rb5 Kd6 48.h4=) 45.Rb5 (45.Rb3 Rd1=) 45...Rd3 (45...Ke4 46.Rb4 Kf5 47.Rb3=) 46.Kf2 Kf4 47.Rb4 Kf5 48.Rb5 Rc3 49.g4 Kf6 50.g5 Ke6 51.Rb6 Kf5 52.h4 Rf3 53.Ke2 Rh3 54.Rf6 Kg4 (54...Ke4 55.Rh6=) 55.g6 Nd7? (better 55...Kh5!?=) 56.Rf7+– Ne5?? (better 56...Rg3 57.g7 Kh4 58.Rd7 Kh5=) 57.g7+– Nf7 58.g8Q Ng5 (58...Kh4 59.Qf7 Rg3+–) 59.Qc8 (59.Qg5) 59...Kh4+– 60.Qh3 (better 60.Qc4!? Kh5 61.Qd5+–) 60…Kh3= ½–½. GuestPRXR – HarlanC, freechess.org, 2016.

7.c4 Bb4 8.Nc3 Ne4 9.Ne4 (9.Qc2 f5=) 9...de4=+ 10.Nd4 c5 (10...e5 11.Nc2 Bg4 12.Be2 Be2 13.Qe2=) 11.Nb3= Qd6 (11...Qh4 12.g3 Qe7 13.Bg2=) 12.Be2 (12.Qg4 f6+=) 12...Rd8 (12...e5 13.0–0=) 13.Bc1 (13.Qc2!?=) 13...Nd7 14.0–0 Ne5 15.d4?? (better 15.Qc2 Nd3 16.Ba3 Ba3 17.Ra3=+) 15...ed3–+ 16.Bf3 Nc4 17.Nd2 Nd2 18.Bd2 c4 19.Bb4 (19.Rb1 Ba3–+) 19...Qb4 20.Rb1 Qa5 21.Be4 (21.Qc1 c3 22.Rb3 c2–+ (22...Qa4?! 23.Qc3 a6 24.Rd1–/+)) 21...f5 22.Bf3 c3 23.Qb3 Kh8 24.Rbc1 c2 25.g4 (25.Qc4 a6–+) 25...e5 (25...fg4!? 26.Bg4 e5 27.Bf3–+) 26.e4 (26.Bd5–+) 26…fg4 (26...fg4 27.Bd1 cd1N 28.Rfd1 Rd4–+) 0–1. GuestKHNH – fthompsonca, freechess.org, 2017.

7.c4 b6 8.Nc3 Nbd7? 9.bc6+– Nc5 10.d4 (10.Qc2 Na6 11.Ne5 Bd6+–) 10...Nce4+– 11.Bd3 (better 11.Qc2+–) 11...Nd6? (better 11...Nc3 12.Bc3 dc4 13.Bc4 Qc7+–) 12.cd5+– ed5 13.Ne5 1–0. DEFFM – GuestXSYG, freechess.org, 2019.

7.c4 Qd6 8.Nc3 Qb4?? (8...Nbd7!?=) 9.Qc2 (9.Ba3 Qa3 10.Ra3 Ba3+–) 9...dc4? (9...Qd6+=) 10.Na2?? (better 10.Ba3 Qa3 11.Ra3 Ba3 12.Bc4+–) 10...Qc5 (10...Qb3 11.Qc1 c3 12.Nc3+–) 11.Bc4+= cb5 12.ab5 Nbd7 13.d4 Qc7 14.0–0 (14.Qb3 a5 15.Nc3 b6+=) 14...Nb6= 15.Ne5 Bd6 (15...Nfd5!? 16.Rfc1 f6=) 16.Rfc1+= Ne4?? (better 16...Nfd5 17.Bb3 Qc2 18.Rc2 Be5 19.de5 Bd7+=) 17.Qe4+– Nc4 18.Rc4 Qb6 19.Nc3 f6 20.Nf3 f5 21.Qh4 (21.Qb1 a6 22.Ba3 ab5 23.Qb5 Qb5 24.Nb5 Ba3+–) 21...Bd7 22.Ne5 (better 22.d5 h6 23.Nd4+–) 22...Bb5 23.Nb5 Qb5 24.Rc2 Qd5? (24...Rac8 25.Rd2 a5+–) 25.Rac1 b5 26.Nf3 (26.h3 b4+–) 26...f4 (26...b4 27.Nd2+–) 27.Ng5 (27.Qg4!? Rf6+–) 27...h6 28.e4?? (better 28.Nf3+–) 28...Qg5+= 29.Qg5 (29.Qh3!? Rae8 30.Rc6+=) 29...hg5= 30.e5 (30.Rc6 Rfd8=) 30...Be7 31.Rc6 Kf7 32.Rc7 a6 (32...Rfb8 33.d5 ed5 34.Rd1–/+) 33.g3 (better 33.d5!? Ke8 34.d6+–) 33...fg3 34.fg3 a5 35.Rf1 Ke8 36.Rfc1 Kf7 37.R1c2 (37.Rf1 Ke8 38.Rfc1 a4=+) 37...b4 (37...Rfd8!?–/+) 38.Bc1= a4 39.Bg5 Rfe8? (better 39...b3 40.Rf2 Kg6 41.Be7 Rf2 42.Kf2 a3 43.Ba3 Ra3=) 40.Rf2+– Kg6 41.Be7 (41.Re7 a3 (worse 41...Kg5 42.Rg7 Kh6 43.Rb7+=) 42.Re8 Re8=+) 41...b3 42.Ba3 Rab8 43.Rff7?? (better 43.Kf1!? Rec8 44.Re7 Rc6+–) 43...Rg8? (43...b2 44.Rg7 Kf5 45.Bb2 Rb2 46.Rc3+=) 44.h4 (better 44.Rb7 Rb7 45.Rb7+–) 44...Kh7?? (44...b2 45.Bb2 Rb2 46.Ra7=) 45.h5?? (better 45.Rb7+–) 45...Kh6? (45...b2 46.Bb2 Rb2 47.Ra7=) 46.Bc1 (46.Rc1 Kh5 47.Ra7+–) 46...Kh7? (better 46...Kh5 47.Bb2 Rbc8+–) 47.Bb2+– Kh6 (47...Rbc8 48.Kf2 Rc7 49.Rc7+–) 48.g4 Kg5 (48...a3 49.Bc1 Kh7 50.Ba3 b2 51.Bb2 Rb2+–) 49.Bc1 (better 49.Rg7 Kf4 50.h6+–) 49...Kg4+= 50.Rg7 Rg7 51.Rg7 Kh5 52.Bb2 (52.Rg5 Kh4 53.Rg2 Rf8+=) 52...Rb6 (52...a3 53.Ba3 b2 54.Bb2 Rb2 55.Kf1=) 53.Ra7 Rb4 (53...Rc6 54.Rf7+=) 54.Kf2 (better 54.Ra5 Kg4 55.Kf1+=) 54...Kg5?? (better 54...Rc4+=) 55.Ke3 (55.Ke2 Rc4 56.Kd3 Rc2+–) 55...Kf5? (55...Rc4 56.Kd3 Rc2 57.Bc3+–) 56.Rf7 (56.Kd3 Kf4+–) 56...Kg6 (56...Kg4 57.Rg7 Kh5+–) 57.Ra7 Kf5 58.Ra6 1–0. GuestJCLC – GuestPolandI, freechess.org, 2017.

7.c4 Bd6 8.Nc3 e5 9.cd5 cd5 10.h3 e4 11.Nd4 Be5 12.f4 (12.Be2 Bd4 13.ed4 Qb6=+) 12...ef3 (12...Bd4 13.ed4 Re8 14.Qe2=+) 13.Nf3 (13.Qf3 Bd4 14.ed4 Ne4 15.Ne4 de4=) 13...Bc3 (better 13...Bg3!? 14.Ke2 Re8–/+) 14.Bc3= Ne4 15.Be5 Nd7 16.Bh2 Ndf6 17.Bd3 Qe7 18.0–0 Nh5 (18...Bf5 19.Rc1+=) 19.Be4 (19.Nd4!? Qg5 20.Rf3+=) 19...de4= (worse 19...Qe4 20.a5+=) 20.Nd4 Qg5 21.Kh1 Ng3 (21...a6 22.b6=) 22.Bg3 Qg3 23.Nf5 (23.Qh5!?=) 23...Bf5=+ 24.Rf5 g6 (24...Rac8!?=+) 25.Rf4= Rae8 26.Qe2 Re5?? (better 26...f5=) 27.Rg4+– Qg4 28.Qg4 a5 (28...f5 29.Qf4 Re7 30.Qd6+–) 29.Rf1 (better 29.Qd7!? b6+–) 29...f5 (29...Rd8 30.Rc1 f5 31.Qf4+–) 30.Qf4 Rd5 31.Rf2 Rfd8 (31...Rf7 32.Qb8 Kg7 33.g4+–) 32.Qc7 (32.g4 Rf8+–) 32...Rd2 (32...R8d7 33.Qa5 h5 34.g4 hg4 35.hg4+–) 33.Rd2 Rd2 34.Qb7 Rd3 (34...Rd8 35.b6 Rd1 36.Kh2+–) 35.Qb6 (35.b6 Rd1 36.Kh2 Rb1+–) 35...Kg7 36.Kg1 (36.Qc7!? Kf6+–) 36...Ra3 (36...Kh6 37.Qa5 Rd1 38.Kf2+–) 37.Qd4 Kh6 38.Kf2 Rd3 (38...Rb3 39.g4 fg4 40.hg4+–) 39.Qc4 (39.Qd3 ed3 40.b6 Kg7+–) 39...Kg5 (39...Rd2 40.Kg3 Rd7 41.b6+–) 40.Kg3 (40.b6 Rd2 41.Kg3 Kh6+–) 40...h5 (40...Re3 41.Kh2 Rd3 42.b6+–) 41.Qc1 (better 41.h4!? Kf6+–) 41...h4 42.Kf2 Kh5 (42...Kh6 43.b6 Rd7 44.Ke2+–) 43.Kg1 (43.b6 Kg5+–) 43...g5 (43...Rd6 44.Kh2 Kg5 45.Qc5+–) 44.Kh2 g4 45.hg4 fg4 (45...Kg4 46.b6 Kg5 47.b7+–) 46.Qc5 Kh6 47.Qc6 Kg5 48.Qc5 (better 48.Qe4!? Rd2 49.b6 Kf6+–) 48...Kf6?? (48...Kh6 49.Qe7 Kh5 50.Qe4+–) 49.Qc6 Ke5?? (49...Kg5 50.b6 Rd1 51.Qb5 Kf6 52.b7+–) 50.Qc5 Rd5?? (50...Kf6 51.Qf8 Ke6 52.Qe8 Kd6 53.Qe4 Rd2+–) 51.Qe7 (51.Qc3 Kf5+–) 51...Kf5 52.Qh4 Rd3 53.Qh7 Kg5 54.Qe4 Ra3 55.Kg3 Kh5 56.Qf5 (56.b6 Kg5+–) 56...Kh6 57.Qf4 (57.Qf8 Kg6 58.Qa3 Kf6 59.b6 Kg7 60.Qe7 Kg6 61.b7 Kh6 62.Qe6 Kh7 63.b8Q Kg7 64.Qbg8) 57...Kg7 58.Kg4 Ra1 59.g3 (59.Qe5 Kf7 60.Qa1 Kg6 61.b6 Kh7 62.b7 Kg6 63.b8Q Kf7 64.Qc7 Ke6 65.Qae5) 59...Rb1 60.Kg5 Rb4 61.Qf6 Kg8 62.Qe6 (62.Qd8 Kf7 63.Qd7 Kf8 64.Kf6 Rf4 65.gf4 Kg8 66.Qg7) 62...Kg7 (62...Kf8 63.Qd7 Rb2 64.Kg6 Rb5 65.Qd8) 63.e4 (63.Qe7 Kg8 64.Kh6 Rh4 65.gh4 Kh8 66.Qd8) 63...Ra4 (63...Rb2 64.Qe7 Kg8 65.Kg6 Rb5 66.Qd8) 64.Qf6 (64.Qe7 Kg8 65.Kf6 Re4 66.Qg7) 64...Kg8 (64...Kh7 65.Qg6 Kh8 66.Kf6 Re4 67.Qg7) 65.Kg6 Re4 66.Qg7 1–0. GuestVHVD – GuestDTNV, freechess.org, 2017.

7.c4 Bd6 8.d4 Nbd7 (8...b6 9.Ba3=) 9.c5 Be7 10.Bd3 cb5 (10...a6 11.Nc3+=) 11.ab5+= e5 (11...Ne4 12.0–0+–) 12.Ne5+– Ne5 13.de5 Ne4 14.Nc3 (14.Be4 de4 15.Qd8 Rd8+– (15...Bd8? 16.Nd2+–)) 14...Nc3+= 15.Bc3 Bc5 16.0–0 Be6 17.Ra4 (17.Qh5 g6 18.Qf3 Qh4+=) 17...Qd7 (17...Qg5 18.Bd4 Bd4 19.ed4+= (worse 19.Rd4 Qe5 20.Qa1 Qg5=)) 18.Qh5 (better 18.Bd4 Bd4 19.Rd4+=) 18...f5 (better 18...h6!?+=) 19.ef6+– Rf6?? (better 19...gf6 20.Rf4 Qe7+–) 20.Qh7 (worse 20.Bh7 Kf8 21.Bf6 gf6+–) 20...Kf7 21.Bf6 Kf6 22.Qh4 Kf7 (22...g5 23.Rf4 Ke7 24.Qg5 Kd6+–) 23.Rf4 Kg8 24.Qh7 1–0. Janek – Sturhn, internet free game, 2017.

7.c4 Ne4 8.Qb3 Bh4 9.Nh4+= Qh4 10.g3 Qg5 11.f3 Ng3?? (better 11...Nd6+=) 12.Rg1+– (12.hg3?! Qg3 13.Ke2 Nd7+–) 12...Qh4 13.Rg3 f5 (13...g6+–) 14.Bg7 Rf7 (14...Nd7+–) 15.Bh6 Kh8 16.Qb2 Rf6 17.Bg7 Kg8 18.Bf6 (18.Bf6 Qg3 19.hg3+–) 1–0. Janek – Bergs, internet, 2017.

7.c4 Ne4 8.Nc3 Bf6 9.Qc2 Nd7 10.Be2 Ndc5 11.Ne4 (11.0–0 Qd6=) 11...Bb2 (11...de4 12.Ne5=+) 12.Qb2 (12.Neg5 Ne4 13.Qb2 Ng5+=) 12...Ne4 (12...de4!? 13.Ne5 Qd6=+) 13.d3 Qa5 14.Nd2 Nd2 15.Qd2 Qd2 16.Kd2 e5 (16...Bd7 17.d4+=) 17.h3 (17.cd5 cd5 18.Rhc1 Be6+–) 17...Be6 18.Rhf1 (18.bc6 bc6 19.cd5 cd5+=) 18...d4 (18...Rac8!?=) 19.ed4+= ed4 20.Bf3 Rac8 21.bc6 bc6 22.Rab1 c5 (better 22...Rc7!?+=) 23.Rb7+– Rb8 (23...Ra8 24.Rfb1+–) 24.Rfb1 Rb7 25.Rb7 (25.Bb7 Rb8 26.Rb5 Kf8+–) 25...g6 (25...a6+–) 26.Ra7 Rb8 27.Rb7 (27.Kc2!? Rb4+–) 27...Ra8 28.Bd1 (28.Bc6 Ra6 29.Rc7 Kf8+–) 28...Bf5 (28...Kg7 29.Rb5+–) 29.Rc7 (29.g4 Be6+–) 29...Ra5 (29...Rc8 30.Ra7 Rb8 31.g4+–) 30.g4 Be6 31.Rb7 Ra6 32.Rb5 Rc6 (32...Kf8 33.Rc5 Ke7 34.Rb5+–) 33.a5 Bc8 (33...Bd7 34.Rb7 Be6 35.Rb6+–) 34.Rb8 Kg7 35.Ra8 (better 35.Bf3!? Rc7+–) 35...Kf6 36.Ba4 (36.Bf3 Rc7+–) 36...Rc7 37.Bb5 (37.a6!? h5 38.gh5 gh5+–) 37…Kg5. GuestMJRN – GuestMXNV, freechess.org, 2017.

7.c4 Ne4 8.d3 Bb4 9.Nbd2 dc4 (9...Nd2 10.Nd2 a6 11.cd5 ed5 12.bc6 Nc6 13.Be2=+) 10.de4= c3 11.Ba3 cd2 12.Nd2 Bd2 (12...Ba3!? 13.Ra3 a6=) 13.Qd2+= Qd2 14.Kd2 Rd8 15.Ke1 (15.Kc3 b6+=) 15...cb5 (15...e5 16.Rc1+=) 16.ab5 a6 (16...Bd7 17.e5+=) 17.Bb2 (17.Be7 Rd7 18.Bb4+=) 17...a5 (17...Nd7 18.Bc3=) 18.f3 (better 18.Be5!?+–) 18...Bd7 (better 18...a4=) 19.Kf2 (19.Ra4 Rc8+=) 19...Be8 (better 19...Bb5!? 20.Bb5 Rd2 21.Kg3 Rb2–/+) 20.Bd4 (20.Be2 a4+=) 20...Nd7 21.Be2 (21.e5 f6=) 21...e5 (21...f6 22.Bb2=) 22.Bc3 (better 22.Bb2=) 22...f6 (better 22...a4=) 23.Ra5 (23.Ba5 Rdc8+–) 23...Ra5 24.Ba5 Ra8 25.Ra1 (25.Bc7 Bf7+–) 25...b6 (25...Bf7 26.Rd1 Be6 27.Bb4+–) 26.Bc3 Ra1 27.Ba1 Nc5 (27...Bf7 28.f4+–) 28.Bc3 Bf7 29.f4?? (29.Bb4 Nb3+–) 29...Nd7 (better 29...Ne4 30.Ke1 Nc3–+) 30.fe5 (30.Bb4!?+–) 30...Ne5 31.Be5 (31.Bd4 Nc4+–) 31...fe5+= 32.Kf3 (32.g3 Kf8 33.Kf3 Bh5 34.g4 Be8=+) 32...Be6 33.h3 (33.h4!?+=) 33...Kf7=+ 34.g4 (34.Kg3 Ke7 35.Kh4 h6=) 34...Ke7–/+ 35.Bd3 (35.Kg3 Kd6–/+) 35...g5 36.Ke2 (36.Kg3 Kd6–/+) 36...Kd6 37.Kd2 (37.Kf2 Kc5 38.Kg3 Bc4–+) 37...Kc5–+ 38.Kc3 Bd7 0–1. GuestHCWQ – GuestLPYY, freechess.org, 2016.

7.c4 h6 8.Be2 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Nc3 Nbd7 13.Bb2 (13.d4 dc4 14.Bc4 Nb6+=) 13...Nc5 (13...dc4!? 14.bc6 Nb6=) 14.d4+= Nce4 15.Qc2 Nc3 16.Bc3 Bb4? (16...Qc7 17.bc6 dc4 18.Bc4+=) 17.Bb2?? (better 17.Ra1 Bc3 18.Ra5 Ba5 19.bc6 bc6 20.Qa4+–) 17...Be7 (17...dc4 18.bc6 b5 19.Rb1=) 18.Ra1 Qb6 (18...Qc7 19.bc6 Qc6 20.Qb3+–) 19.c5 Qd8 20.Ra8 Nd7 21.bc6 bc6 22.Qb3 (22.Ra7 Bf6+–) 22...Qc7 23.h3 Bf6 24.Bc3 Bb7?? (24...e5 25.Ba5 Qb7 26.Qb7 Bb7 27.Ra7+–) 25.Ra7 (25.Ba5 Nc5 26.Rf8 Kf8+–) 25...Nc5?? (better 25...Rb8+–) 26.dc5+– Bc3 27.Qc3 Ra8 28.Ra8 Ba8 29.Qe5 Qb7 (29...Qe5 30.Ne5 f6 31.Nd7+–) 30.Qd6 Qb1 (30...Qc8 31.Ne5 Qe8 32.Bh5+–) 31.Bf1 Qa1 32.Qd8 Kh7 33.Ne5! Qe5 34.Qa8 d4 35.ed4 Qd4 36.Qc6 e5 (36...Kg6 37.Qc8 Qd1 38.c6+–) 37.Qd6 Qc3 (37...Qb4+–) 38.c6 e4 39.c7 f5 40.Qd7 e3 41.Qf5 (41.Qf5 g6 42.Qd7 Qg7 43.c8Q ef2 44.Kf2 Qd7 45.Qd7 Kg8 46.Bc4 Kh8 47.Qf7 g5 48.Qg8) 1–0. GuestZVZG – JustMicgo, freechess.org, 2017.

7.c4 h6 8.Be2 Qc7 9.0–0 Nbd7 (9...dc4 10.Be5 Qa5 11.Bc4=) 10.d4 Ne4 11.Nbd2 Ndf6 12.Ne5 Nd2 13.Qd2 Ne4 14.Qc2 Bd6 15.f3 Be5 (15...Nf6!?+=) 16.de5+– Ng5 17.h4 Nh7 18.Bd3 g6 (18...f5!?+–) 19.cd5+– ed5 20.Rac1 a6 (20...Qe7 21.bc6 bc6 22.Qc6+–) 21.ba6 ba6 22.Bg6 (better 22.h5 Rb8 23.hg6 fg6 24.Bg6+–) 22...Be6?? (better 22...fg6 23.Qg6 Qg7 24.Rc6 Bf5 25.Qg7 Kg7+–) 23.Bh7+– Kh8 24.Ba3 Rfe8 25.Bd6 Qd7 1–0. onur604 (2315) – Bariss_Ertan (2170), lichess.org, 2020.

7.c4 a6

8.ba6 Na6 9.Nc3 Nc5 10.Qc2 b6 11.d4 Nce4 12.Bd3 Nd6 (12...Nc3 13.Bc3 dc4 14.Bc4=) 13.Ne5 (13.cd5 ed5 14.Ne5 Qe8=) 13...Qc7 (13...dc4 14.Nc4 Nc4 15.Bc4=+) 14.0–0 (14.cd5 cd5 15.Ba3 Bb7+=) 14...Ba6 (14...dc4 15.Nc4 Nc4 16.Bc4=) 15.cd5 cd5 (worse 15...ed5 16.Ba6 Ra6 17.Nb5 Nb5 18.Qc6+–) 16.Ba6 Ra6 17.Rfc1 Rc8 18.Qd3 Qb7 19.Ba3 Nc4 (19...Rca8 20.Bb4=) 20.Be7 Qe7 21.e4 Raa8 22.ed5 ed5 23.Nd5! Nd5 24.Rc4 (worse 24.Nc4 Nf4 25.Qe3 Ne2 26.Kf1 Qe3 27.fe3 Nc1 28.Nb6 Nb3=+) 24...Qb7 25.Rc8 Rc8 26.Qf5 g6 27.Qf3 Rc3 28.Qe4 f5 29.Qh4 Kg7 30.Re1 (30.Qd8 Nf4 31.f3 Qc7 32.Qc7 Rc7+–) 30...h6 (better 30...Qc7!?+=) 31.Qd8+– Rc8 (31...Nf4!? 32.Nf3 Nd5+–) 32.Qd6+– Nf4 33.Nf3 Rc7?? (33...Nd5+–) 34.Qf4 1–0. Blackman,Justin – Howell,Shamel, National Championship, 2009.

8.Qb3 ab5 9.ab5 Ra1 10.Ba1 Qc7 11.Be2 (11.Be5 Bd6 12.Bf6 gf6+=) 11...dc4 (11...cb5 12.Be5 Bd6 13.Bd6 Qd6 14.cd5 Nd5 15.d4=) 12.Bc4 (12.Qc4 Qb6=) 12...c5 (12...cb5 13.Bb5 Qc1 14.Qd1=) 13.d3 (13.Be5 Bd6 14.Bf6 gf6+=) 13...b6= 14.Nbd2 Bb7 15.0–0 (15.Be5 Qd8=) 15...Nbd7 16.Be6 (better 16.Rc1!?=) 16...fe6–/+ 17.Qe6 Kh8 (17...Rf7 18.Ng5 Bd5 19.Qf5=+) 18.Qe7 Qd8?? (better 18...Re8 19.Bf6 Re7 20.Be7 Ne5=+) 19.Qd8+– Rd8 20.Nc4 (20.e4 Kg8+–) 20...Bf3 21.gf3 Kg8 22.f4 (22.d4 Kf7+–) 22...Nd5 23.Rd1 Ra8 (23...Nc7 24.d4 cd4 25.Bd4+–) 24.Bb2 (24.d4 Ra4 25.Nd6 Nb4+–) 24...Ra2 (24...Ra4 25.Ra1 Ra1 26.Ba1+–) 25.Kg2 (25.d4 Ra4 26.dc5 Rc4 27.Rd5 Nc5+–) 25...Kf7 (25...Nc7 26.Rb1+–) 26.Kf3 (26.d4 cd4 27.Bd4 g6+–) 26...g6 (26...Nc7 27.Rb1+–) 27.Ke4 (27.d4 Nc7+–) 27...N5f6 (better 27...Nc7+–) 28.Kf3 Nd5 29.e4 (29.d4!? Nc7+–) 29...Nc7 30.Ne5 (30.d4 Nb5 31.d5 Ra4+–) 30...Ne5 (30...Ke6 31.Rb1 Nb5 32.Kg4+–) 31.Be5+– Nb5 32.Rb1 Ra5 33.Ke3 (33.Kg4 Kf8+–) 33...Ke6+– 34.Rb2 Kd7 35.f5 (35.Rb3 Kc6+–) 35...gf5 36.ef5 Kc6 37.f4 (37.f6 Ra7+–) 37...Ra8 (37...Ra6 38.f6 Nd6 39.Rg2+–) 38.Ke4 (38.f6 Re8+–) 38...Ra4 39.Ke3 Ra8 40.f6 Re8 41.Ke4 (41.Rg2 Nd6+–) 41...Nc7 (41...Nd6!? 42.Kf3 Nf7+–) 42.Rg2+– Ne6 (better 42...Rf8!?+–) 43.Kf5 Kd7 44.Rb2 Kc6 (44...Ra8 45.Rb6 Nd8 46.Rd6 Ke8+–) 45.f7 (45.f7 Nd4 46.Bd4+–) 1–0. jaddwarrior (1960) – Doppelbauer (1950), ChessWorld.net, 2015.

8.Qc2 ab5 9.cb5 cb5 10.Bb5 Bd7 (10...Nc6 11.0–0 Bd6 12.Nc3 Qe7 13.Be2 Bd7 14.Nb5 Bb4 15.Ng5 g6; 10...h6 11.0–0 Nc6 12.Nc3 Bd7 13.Rfc1 Rc8 14.h3 Bd6 15.Ba3 Ba3; 10...Na6 11.0–0 Bd7 12.Nc3 h6 13.Ne5 Nb4 14.Qd1 Bc6 15.Be2 Nd7; 10...g6 11.0–0 Bd7 12.Nc3 Qc7 13.Rfc1 Rc8 14.Qb3 Nc6 15.d3 Bd6; 10...Qa5 11.Ng5 g6 12.0–0 Nc6 13.Nc3 Bd7 14.Ba3 Ba3 15.Ra3 Rfc8) 11.Bd3 (11.0–0 Bb5 (11...Bd6 12.Nc3 Nc6 13.Ba3 Ba3 14.Ra3 Qe7 15.Raa1 Rfc8) 12.ab5 Ra1 13.Ba1 Qb6= (13...Nbd7 14.Rc1 Bd6 15.Bb2 Qb6) 14.Bd4 Qa5 15.Bb2 Nbd7; 11.Nc3 Bb5 12.Nb5 Nbd7 13.0–0 Rc8 14.Qd1 Qb6 15.Qe2 Qa6) 11...h6 (11...Na6 12.Bf6 Bf6 13.Nc3 g6 14.Ba6 Ra6 15.0–0 Qa5) 12.Ne5 (12.Bf6 Bf6 13.Nc3 Na6 14.0–0 Nb4 15.Bh7 Kh8 16.Qb2) 12...Nc6 13.Nc6 (13.0–0 Nb4 14.Qb3 Bd6 15.Be2 Bc6) 13...Bc6 14.0–0 Qd7 (14...Qa5 15.Nc3 Rac8) 15.a5 (15.Bd4 Ba4) 15...Rfc8 16.Qd1 Bb5 17.Qe2 Rc5 (17...Bd3 18.Qd3 Bd8 19.a6=+) 18.Bc3 Bd3 19.Qd3 Qc7 (19...Bd8 20.a6=+) 20.Bb4 (20.Na3 e5=+) 20...Rc1 (20...Rc6!? 21.Be7 Qe7–/+) 21.Be7= Rf1 22.Kf1 Qe7 23.Nc3 (23.Kg1 Qb4=+) 23...Ra6 (23...Qc7 24.Qb1–/+) 24.Qb5=+ Qd7 (24...Qc7 25.Kg1=+) 25.Qb2 (25.Rb1 Qd6 26.Qb7 Ra5 27.Qb8 Qb8 28.Rb8 Kh7=) 25...Qc8 26.d3 (26.Rb1 Ra5 27.Qb7 Qc4 28.Kg1 Ne4 29.Ne4 de4=+) 26...Qc5 (26...Qc7!?=+) 27.Nb5= b6 28.Rc1 Qf8 29.Nc7 Ra5 30.Qb6 Ra3 31.Qb1 Ra4 32.Qb7 Rb4 (32...Qd6 33.Kg1=+) 33.Qa6 Rb8 34.Nb5 (34.d4 Qb4 35.Qc6 Rc8=+) 34...Ra8 (34...Qb4 35.Rc8 Rc8 36.Qc8 Kh7 37.Nd4–/+) 35.Qc6 Qe8 (35...Ra2 36.Nc3 Rd2 37.Ke1=+) 36.Qc5 (36.Qe8 Ne8 37.Ke2 Kf8=) 36...Rb8 37.Nd6 Qf8 38.Qc7 Rd8 39.Nb7 Rd7 40.Qc6 (40.Qc8 Qc8 41.Rc8 Kh7=) 40...Qb8 (40...Qa3 41.Re1 Qb2–/+ (41...Qd3?! 42.Kg1–/+)) 41.Qc8= Qc8 42.Rc8 Kh7 43.Nc5 Ra7 44.h3 Nd7 45.d4 Nc5 (45...Nb6 46.Rb8 Nc4 47.Rb7 Rb7 48.Nb7=) 46.dc5+= Kg6 47.c6 (47.Ke2 Kf6=) 47...Kf6 48.c7 (48.g4 Ke5 49.Rd8 Rc7=) 48...Ke5=+ 49.Rg8 g6?? (better 49...Rc7 50.Rg7 Kf6=) 50.c8Q+– Ra1 51.Ke2 Ra2 52.Kf3 g5 53.Qc3 Kf5 54.g4 1–0. Paggalis,G – Stamatopoulos,Georgios, 3rd Open, Patras GRE (6), 2001.

8.Qc2 ab5 9.cb5 Bd6 A) 10.g3 h6 (10...Re8 11.Nc3 e5 12.Bg2 e4 13.Nd4 c5 14.Nde2 Nbd7 15.0–0 Ne5; 10...Qe7 11.Nc3 e5 12.Bg2 e4 13.Nd4 c5 14.Nde2 b6 15.f3 Bb7; 10...c5 11.Bg2 Nbd7 12.0–0 c4 13.Nc3 Nc5 14.Ne2 b6 15.Nf4 Bb7) 11.Be2 cb5 12.ab5 Ra1 13.Ba1 Nbd7 14.0–0 e5 15.Nc3 e4; B) 10.Nc3 e5 11.Be2 e4 12.Nd4 c5 13.Nb3 Be6 14.0–0 Nbd7 15.a5 c4; C) 10.Be2 cb5 (10...Qc7 11.Nc3 e5 12.Nh4 cb5 13.Nf5 b4 14.Nd6 Qd6 15.Nb5 Qe7) 11.ab5 Ra1 12.Ba1 Nbd7 13.0–0 e5 14.Nc3 e4 15.Nd4 Ne5; D) 10.h3 c5 (10...h6 11.Nc3 e5 12.Be2 e4 13.Nd4 c5 14.Nb3 Nbd7 15.0–0 Ne5) 11.Nc3 Nbd7 12.Be2 e5 13.0–0 e4 14.Nh4 Ne5 15.f3 g5; E) 10.Na3 c5 (10...Qe7 11.bc6 Nc6 12.Nb5 Bb4 13.Be2 Bd7 14.0–0 Rfc8 15.Qb1 Ne4; 10...h6 11.Be2 c5 12.0–0 Nbd7 13.b6 Qb6 14.Nb5 Be7 15.Rab1 Ne4) 11.Be2 Nbd7 12.b6 Qb6 13.0–0 Be7 14.Rfb1 Qc6 15.Nb5 Ne4; F) 10.Bd3=+ cb5 (10...Nbd7 11.0–0 c5 12.Nc3 c4 13.Be2 Nc5 14.Nd4 Bd7 15.f4 Qc7; 10...c5 11.Ng5 g6 12.Nc3 c4 13.Be2 h6 14.Nf3 Nbd7 15.Nd4 Nc5; 10...Qe7 11.g4 Nbd7 12.g5 Ne4 13.bc6 bc6 14.Nc3 Ng5 15.Ng5 Qg5) 11.Nc3 ba4 12.Nb5 Nc6 13.Nd6 Qd6 14.Ba3 Nb4 15.Qc3 Nd3.

8.Qc2 ab5 9.cb5 Nbd7 10.Be2 cb5 (10...Nc5 11.Nc3 cb5 12.Nb5 Nce4 13.0–0 Bd7 14.d3 Rc8 15.Qb1 Bb5; 10...Qc7 11.0–0 e5 12.Nc3 e4 13.Nd4 Ne5 14.f4 ef3 15.Nf3 Nf3; 10...h6 11.Nc3 c5 12.0–0 Bd6 13.h3 b6 14.a5 ba5 15.d3 Bb7; 10...g6 11.Nc3 Bd6 12.0–0 c5 13.h3 c4 14.e4 b6 15.Nd4 Bb7; 10...Bd6 11.bc6 Qc7 12.Bf6 Nf6 13.cb7 Qb7 14.Nc3 Qc7 15.0–0 Bd7) 11.Bb5 Nc5 12.Nc3 Bd7 13.Ne5 Bb5 14.Nb5 Nfe4 15.f3 f6.

8.Qc2 ab5 9.cb5 h6 10.Nc3 cb5 (10...Qc7 11.Be2 Nbd7 12.0–0 c5 13.a5 Ra5 14.Ra5 Qa5 15.Ra1 Qc7; 10...Nbd7 11.Be2 c5 12.0–0 Qc7 13.h3 b6 14.a5 Ra5 15.Ra5 ba5) 11.Bb5 Nc6 12.0–0 Bd7 13.Rfc1 Qc7 14.Ne2 Qb6 15.Rab1 Rfc8.

8.Nc3 Qa5 9.d3 Bb4 A) 10.Rc1 Bd7 (10...cb5 11.ab5 dc4 12.dc4 Nbd7 13.Be2 Ne4 14.Qc2 Ndc5 15.0–0 Bc3 16.Bc3 Nc3=) 11.Be2 dc4 12.0–0 cb5 13.ab5 Rd8 14.Ne5 Bb5 15.Nb5 Qb5 16.Nc4 Nbd7=+; B) 10.Qc2=+ Rd8 (10...Re8 11.Be2 ab5 12.cb5 e5 13.0–0 Bg4 14.h3 Bh5 15.Rfc1 Bf3 16.Bf3 Nbd7=) 11.Be2 dc4 12.0–0 cb5 13.ab5 cd3 14.Bd3 Qc7 15.Ra4 Be7 16.Rc4 Qd7=.

8.Nc3 Qa5 9.d3 c5 10.Qc1 (10.Qd2 b6= (10...Nbd7 11.cd5 ed5 12.Be2 b6 13.0–0 Bd6 14.Rfb1 Re8 15.ba6 Ra6 16.Qd1 Bb8+=) 11.cd5 ed5 12.Be2 Re8 13.0–0 Bg4 14.Qc2 Nbd7 15.ba6 Qa6 16.Nb5 Rec8=; 10.Be2 dc4 (10...Rd8 11.cd5 ed5 12.0–0 Be6 13.Qd2 b6 14.Nb1 Qd2 15.Nbd2 Nbd7 16.Rfb1 Re8=) 11.dc4 Ne4 12.Qb3 Bf6 13.Ra3 Nd7 14.0–0 Bc3 15.Bc3 Nc3 16.Qc3 Qc3=) 10...Rd8=+ 11.Nd2 (11.cd5 ed5 12.Nd2 Be6 13.d4 c4 14.Be2 Nbd7 15.0–0 Rdc8 16.Qc2 Bb4=+) 11...d4 12.ed4 (12.Nd1 e5 (12...Kh8=+ 13.Be2 e5 14.0–0 Qc7 15.Qc2 Be6 16.f4 ef4=) 13.Be2 Qc7 14.0–0 Bf5 15.f4 e4 16.de4 Ne4=+) 12...cd4–/+ (worse 12...Rd4 13.Nb3 Qc7 14.Nd4 cd4 15.Na2 (15.Ne4 Ne4 16.de4 Bb4 17.Kd1+=) 15...Qd6 16.Be2 Nbd7+–) 13.Ne2 (better 13.Nb3 Qc7 14.Na2–/+ e5 15.Be2 Nbd7 16.0–0 Nc5=+) 13...Bb4 (better 13...e5!?–/+ 14.Ng3 Nbd7 15.f4 Bb4 16.fe5 Ne5–+; 13...Bc5 14.Ng3 e5 15.Be2 Bb4 16.Qc2 Nbd7–/+) 14.Nd4= (14.Bd4 e5 15.Be5 Ne4–+ 16.Bf4 Rd3–+) 14...Qb6 (14...e5!? 15.Nc2 Bd6= 16.Be2 Nbd7=) 15.N4f3+= Ng4 (15...Nbd7 16.Be2+= Nh5+=) 16.d4+– Nd7 17.c5 Qc7 18.h3 Ngf6 19.ba6 (19.Ba3 Ba3 20.Ra3 e5 21.Ne5 ab5 22.Nd7 Qd7 23.Bb5 Qd4+=) 19...ba6 20.Qc4 (20.Bc3 Bc3 21.Qc3 Nd5+=) 20...Qa5 (20...a5 21.Ba3 Ne5 22.Ne5 Bd2 23.Kd2–/+) 21.c6 (21.Ba3 Rb8 22.Bd3 Bd2 (22...Qa4? 23.0–0+–) 23.Nd2 Bb7=) 21...Nb6= 22.Qc2 Qd5 (22...Nbd5!?=) 23.Rc1 Ne4 (23...Rd6 24.Bd3+=) 24.c7 Rf8 (24...Rd7 25.Bd3 Nd2 26.Nd2+= (worse 26.Bh7 Kh8 27.Nd2 f5=+)) 25.Ke2 (better 25.Bd3 f5 A) worse 26.Be4 fe4 27.Bc3 Bc3 (worse 27...ef3 28.Bb4 fg2 29.Rg1+=) 28.Qc3 ef3–/+; B) 26.0–0 Nd2 27.Nd2+=) 25...Bd7?? (better 25...Nd2 26.Nd2 Ra7=) 26.Ne4 (26.Qe4 Rfc8+–) 26...Ba4 27.Nc3 Qd7? (better 27...Bc2 28.Nd5 Nd5 29.Rc2 Rfc8+–) 28.Na4 Na4 (28...Qa4 29.Qa4 Na4 30.Ba1+–) 29.Ne5 Qb5 (29...Qe8 30.Qb3 Bd6 31.Ba1+–) 30.Ke3 Qb7 (30...Qe8 31.Ba6! Nb6 32.Bb7+–) 31.Qa4 1–0. Bonetti,Shane – artique (1970), ICC, 2002.

8.Nc3 Qa5 9.d3 Rd8 A) 10.d4 Bb4 (10...Ne4 11.Qc2 Bb4 12.Rc1 ab5 13.ab5 Nc3 14.Bc3 dc4 15.b6 c5 16.dc5 Nc6–/+) 11.Rc1 dc4 12.bc6 b5 13.ab5 ab5 14.Nd2 Bc3 15.Bc3 Qc7 16.Rb1 Nd5–/+; B) 10.bc6 Nc6 (10...dc4 11.d4 Bb4 12.Qc2 Nc6 13.Bc4 Ne4 14.Rc1 Nc3 15.Bc3 Bc3 16.Qc3 Qa4=+) 11.d4 e5 12.Qb3 ed4 13.Nd4 Bb4 14.Nc6 bc6 15.Bd3 d4 16.ed4 Rd4–/+.

8.Nc3 Qa5 9.Be2 A) 9...Nbd7= A1) 10.cd5 ed5 (10...cd5 11.0–0 e5 12.d4 e4 13.Nd2 Bb4 14.Qc2 Qd8 15.Ba3 Ba3 16.Ra3 ab5+=) 11.0–0 c5 12.d3 Rd8 13.Qd2 b6 14.Rfb1 Nb8 15.ba6 Nc6 16.Qd1 Ba6=; A2) 10.0–0 c5 (10...dc4 11.Bc4 Qb4 12.Ba3 Qc4 13.Be7 Re8 14.Bf6 Nf6 15.Rc1 Bd7 16.Ne5 Qb4+=) 11.cd5 ed5 12.Qc2 Bd6 13.Rfb1 Re8 14.d4 c4 15.Ba3 Ba3 16.Ra3 Qc7=; B) 9...b6 B1) 10.Ne5 Bd6 (10...Bb7 11.0–0 Rc8 12.Bh5 Nh5 13.Qh5 Rf8 14.Qg4 Bf6 15.Qg3 h5 16.Nd5 cd5+–) 11.Na2 ab5 12.ab5 Bb7 13.cd5 cd5 14.0–0 Rc8 15.Bd4 Ne4 16.Nf3 Nd7=+; B2) 10.0–0 Re8 (10...Bb7 11.cd5 cd5 12.Nd4 Re8 13.f4 ab5 14.Nb3 Qb4 15.Ba3 Qa3 16.Ra3 Ba3+–) 11.Qb1 Qb4 12.Ne5 Bb7 13.d4 ab5 14.ab5 dc4 15.Ra8 Ba8 16.Bc4 Bb7+=; C) 9...dc4 C1) 10.0–0 Qc7 (10...cb5 11.ab5 Qc7 12.Qa4 b6 13.Qc4 Qc4 14.Bc4 Bb7 15.d3 Rc8 16.e4 Be4=) 11.bc6 Nc6 12.Bc4 Rd8 13.Rc1 b6 14.Qe2 Bb7 15.d4 Bd6 16.Rfd1 Na5=; C2) 10.Bc4 Rd8 (10...b6 11.0–0 Bb7 12.Qc2 Rc8 13.d3 Nd5 14.Nd4 Qb4 15.bc6 Nc6 16.Nf5 Bf8+=) 11.0–0 Qc7 12.Qb3 b6 13.Ne2 cb5 14.ab5 Bb7 15.Rfc1 Bf3 16.gf3 Qb7=.

8.Nc3 Bb4 9.Be2 Ne4 10.0–0 Nc3 (10...Bc3 11.Bc3 Nc3 12.dc3+=) 11.dc3+– Be7 12.Qc2 Nd7 13.cd5 cd5 14.c4 Bf6 15.cd5 Bb2 16.Qb2 ed5 17.Qd4 Nf6 (17...ab5 18.ab5 Ra1 19.Ra1+–) 18.Rfc1 (18.ba6 b6+–) 18...Be6 (18...ab5 19.Bb5 Qd6 20.Ne5+–) 19.ba6+– ba6 20.Ne5 Rc8 (20...a5!?+–) 21.Ba6+– Rc1 22.Rc1 Qa5 (22...Qd6 23.Bb5 Rb8 24.f3+–) 23.Bb5 Rc8 (23...Rb8 24.Nc6 Qc7 25.Qc5+–) 24.Nc6 Qc7 25.f3 (25.a5 Kh8+–) 25...h6 (25...Ne8+–) 26.a5 Kh7 (26...Kh8 27.a6+–) 27.a6 Bd7 28.Rc2 Ne8 (28...Re8+–) 29.Ne7 Qc2 (29...Qd8 30.Bd3 g6 31.Nc8 Bc8+–) 30.Bd3 (30.Bd3 f5 31.Bc2 Rc2 32.a7+–; 30.Bd7?! Qe2 31.h4 Rc1 32.Kh2 Qa6 33.Be8 Qd6 34.Qf4 Qe7 35.Bf7 Rc5=) 1–0. DEFFM – GuestZBMY, freechess.org, 2019.

8.Nc3 b6 9.Be2 a5 10.0–0 c5 11.cd5 ed5 12.d3 Be6 13.Ng5 Qc8 14.Ne6 Qe6 15.Bf3 Ra7 16.Qc2 (16.Ne2 Re8+=) 16...Rd7 17.h3 Re8 18.Ne2 Qd6 19.Nf4 d4 20.ed4?? (better 20.Qd2=) 20...Qf4–+ 21.dc5 Rd5?? (better 21...Bc5 22.Qc4 Bd4–+) 22.Bd5+= Nd5 23.cb6 Nb6 (better 23...Bd6!? 24.g3 Qh6+=) 24.Rfe1+– Nd5 (24...N8d7 25.Qc3 Qg5 26.Ba3+–) 25.Re4 (25.Re5 Rd8 26.Qc4 Bh4 27.Rd5 Qf2 28.Kh2 Qb2 29.Rd8 Bd8+–) 25...Qd6+– 26.Rae1 Nd7 27.Re7?? (better 27.Qc6 Qc6 28.bc6+–) 27...Ne7 (27...Re7!? 28.Re7 Qe7 29.Qc8 Nf8=+) 28.Qc3= f6?? (28...Nf6 29.Qa5 Nfd5 30.Qd2=) 29.Qc4?? (better 29.Ba3 Rc8 30.Bd6 Rc3 31.Re7+–) 29...Kf8=+ 30.Qh4? (30.Re6 Qc5 31.Ra6 Qb4 32.Qb4 ab4–/+) 30...Kg8 (better 30...Qd3!? 31.Qg4 Qd2–+) 31.Qh5 (31.Qc4 Kf8=) 31...g6 32.Qf3 Qb4 33.Qe2 Ne5 (33...Kf8 34.Qe6 Qb2 35.Qd7=+) 34.Be5= fe5 35.Qe5 Qa4 36.Qe6 (36.d4!?+–) 36...Kg7= 37.Qe5 Kg8 38.Qe6 Kg7 39.Qe5 Kf8 (39...Kf7 40.Qe6 Kg7=) 40.d4 (40.Qf6!? Kg8 41.Re7 Re7 42.Qe7 Qb5 43.d4+–) 40...Qb4 41.d5 Qb5 42.Qf6 (42.Qf6 Kg8 43.Qe6 Kf8 44.Qf6 Kg8 45.Qe6 Kf8 46.Qf6=) 1–0. GuestZNZD – GuestTLCJ, freechess.org, 2017.

8.Nc3 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Qa1 cb5 12.Bb5 Bd7 13.0–0 (13.Be2 Bc6=) 13...Bb5=+ 14.Nb5 Qb6 (14...Qd3 15.Bf6 Bf6 16.Qb1=) 15.Nbd4 Nc6 (15...Nbd7 16.d3=) 16.Rb1+= Nd4 17.Bd4 Qa6 18.Qb2 Rb8 (18...Rc8 19.h3+=) 19.Be5+– Rc8 20.Bc3 (20.h3 b6+–) 20...Rb8+= 21.Be5 ½–½. Jacobs,Jean – Vandezande,Albert, Belgian championship, 1970.

8.Nc3 c5 9.cd5 ed5=+ 10.d3 (10.Qc2 Bg4=+) 10...b6 (10...d4 11.Ne4–/+) 11.Be2=+ d4 12.ed4 cd4 13.Ne4 Bb4 14.Ned2 (14.Kf1 Bc5=+) 14...Bc3 15.Ba3? (better 15.Bc3 dc3 16.Ne4=+) 15...Re8–+ 16.Ra2 (16.Rb1 ab5 17.Rb5 Bd7–+) 16...Bb7 (16...ab5 17.0–0 ba4 18.Nc4–+) 17.0–0 (17.Kf1 ab5 18.ab5 Nd5–+) 17...ab5 18.ab5 Nbd7 (better 18...Bb4! 19.Nb1 Nd5–+) 19.Nc4–/+ Bd5 20.Qc2 Qc7 21.Bd6?? (better 21.Rc1–/+) 21...Ra2–+ 22.Qa2 (22.Bc7?? Rc2 (22...Re2?! 23.Qd1=+) 23.Bd1 Rc1–+) 22…Bc4 (22...Bc4 23.dc4 Qd6–+) 0–1. GuestTQTP – GuestCVZY, freechess.org, 2016.

8.Nc3 c5 9.Be2 d4 10.ed4 cd4 11.Nb1 d3 12.Bf1 Ne4 13.Nc3 (13.Ne5 Bf6 14.Qf3 Nc5=+) 13...Nc5=+ 14.g3 Bf6 15.Bg2 e5 (15...Nbd7 16.Ra2–/+) 16.0–0 (16.Nd5!?=+) 16...e4–/+ 17.Ne1 Bf5 18.f3 ef3 (18...Qd4 19.Rf2 Qc4 20.fe4 Be4 21.Rf6 Bg2 22.Rf4+–) 19.Nf3 (19.Qf3 Qd4 20.Kh1 Bg4=+) 19...Bg4 (19...Be6 20.Ba3 Nbd7 21.Qb1–/+) 20.h3 (20.Ba3 Nbd7 21.Rc1=+) 20...Bd4 (better 20...Be6!?–/+) 21.Kh1 Bf3 22.Rf3 Nbd7 23.Rf4 (23.Rf5 Ne5 24.Ba3 Rc8=+) 23...Be5=+ 24.Rf5 g6 25.Qg4 (25.Rf3!?=+) 25...Nf6 26.Qf3?? (better 26.Rf6 Qf6 27.Nd5–+) 26...gf5–+ 27.Qf5 Qd6 (27...Nfd7!? 28.Qh5–+) 28.Qg5 (28.ba6 Bc3 (28...Bg3?? 29.Qg5 Kh8 30.Nb5+–; worse 28...ba6 29.Qg5 Kh8 30.Nb5+–; worse 28...Na6 29.Nb5 Bb2 30.Nd6 Ba1 31.Bb7+–; 28...Ra6?! 29.Nb5 Nfe4 30.Be5=+) 29.Bc3 Ra6 (29...Qg3?? 30.Qf6 Qg2 31.Kg2 Ra6 32.Qg7) 30.Bb7 h6 (30...Nb7? 31.Qg5 Kh8 32.Rf1+–) 31.Ba6 Nce4–/+) 28...Kh8 29.Rf1 (29.ba6 A) worse 29...ba6 30.Nb5 Nfe4 31.Be5 (worse 31.Qe5 Qe5 32.Be5 f6–/+) 31...f6 32.Nd6 Ng5 33.Bd4+– (worse 33.Ba8 fe5 34.h4 Rf6+=); B) 29...Bg3?? 30.Nb5 Be5 31.Be5 Qe5 32.Qe5+–; C) 29...Na6?! 30.Nb5 Bb2 31.Nd6 Ba1 32.Bb7=; D) 29...Ra6?! 30.Nb5 Bb2 31.Nd6=+; E) 29...Rg8 30.ab7 Nb7–+ (30...Rg5 31.ba8Q Rg8 32.Qc6 Qc6 33.Bc6+–)) 29…Rg8 (29...Rg8 30.Ne4 A) 30...Nfe4? 31.Be5 f6 32.Rf6 Ng5 33.Rd6 (33.Bd6? Nge4–+) 33...Rg7 34.ba6+–; B) 30...Nce4 31.Qe5 Ng3 32.Kg1 Qe5 33.Be5 Ngh5 34.Bf6 Nf6 35.Rf6 ab5 36.ab5 Ra2–+) 0–1. GuestNDHS – GuestTWQW, freechess.org, 2017.

8.Nc3 Ne4 9.Qc2 ab5 A) 10.cb5 Nf6 (10...f5 11.Be2 Bf6 12.0–0 Bd7 13.Rfc1 Qb6 14.Nd1 Rc8 15.Bf6 Nf6 16.Ne5 Be8+=) 11.Be2 c5 12.0–0 Nbd7 13.d4 Bd6 14.Ba3 Qc7 15.b6 Qb6 16.Nb5 Be7=+; B) 10.ab5 Ra1 11.Ba1 Nf6 12.cd5 ed5 13.Be2 Re8 14.0–0 Bg4 15.h3 Bh5 16.Bb2 c5=.

8.Nc3 Ne4 9.Qc2 Nc3 10.Qc3 Bf6 (10...f6 11.bc6 Nc6 12.Rc1 Bd6 13.Be2 dc4 14.Bc4 Na5 15.Ba2 Nc6 16.0–0 Rb8=) 11.d4 ab5 (11...c5 12.cd5 cd4 13.Nd4 Qd5 14.Qc4 Qd8 15.Bd3 ab5 16.ab5 Ra1+=) 12.ab5 (12.cb5 Be7 13.Bd3 cb5 14.ab5 Ra1 15.Ba1 Qd6 16.Qc2 f5+=) 12...Ra1 13.Ba1 cb5 (13...c5 14.Bd3= (14.Ne5 cd4 15.ed4 dc4 16.Bc4 b6=) 14...cd4 15.ed4 b6 16.c5 bc5+=) 14.cb5+= Bd7 15.Bd3 Qb6 (15...Qe7 16.0–0 Rc8+=) 16.0–0 Rc8 (16...Bb5? 17.Rb1 Qc6 18.Rb5+–) 17.Qb2 Be8 (17...Bd8 18.Qb1 h6 19.Rd1=) 18.g4 (18.Qb1 h6+=) 18...h6 19.Kg2 (19.Rc1 Rc1 20.Qc1 Qd8+=) 19...Nd7 20.Rc1 Qd8 21.Rc8 Qc8 22.Qb3 Nb6 23.Nd2 e5 (23...Be7 24.Qc3=) 24.Be2 (24.Bf5 Qc1 25.de5 Qa1 26.ef6 Qf6=) 24...e4 25.Bc3 Bd7 26.h3 h5 (better 26...Bd8!?=) 27.Ba5+= (worse 27.gh5 Bh3 28.Kg3 Qf5=+) 27...Nc4 (27...Qc1!? 28.Ne4 de4 29.Bb6 Qe1+=) 28.Nc4+– (28.Bc4?! dc4 29.Qc4 Qc4 30.Nc4 hg4 31.hg4 Bb5= (worse 31...Bg4 32.Nd6+–)) 28...dc4 29.Bc4 (29.Qc4 Qe8+–) 29...hg4 (29...Qe8 30.gh5 Bf5 31.Bc7+–) 30.Bf7+– Kh8 31.hg4 (better 31.h4!?+–) 31...Bg4= 32.Kg3 Qf5 (32...g5 33.Bb4=) 33.f4+– ef3 (better 33...Be2 34.Qe6 Qe6 35.Be6 Bb5+=) 34.Qd1?? (better 34.Qd5+–) 34...f2 35.Qh1 Bh3!! 36.Bc4 (36.Qh3 Qh3) 36...Qg4 37.Kh2 Qh4 (37...Qh4 38.Qe4 Qe4 39.Kh3 Qh4 40.Kg2 Qg4 41.Kf2 Bh4 42.Kf1 Qf3 43.Kg1 Qf2 44.Kh1 Bg3 45.e4 Qh2) 0–1. De Visser,Arno – Stellingsma, 1992.

8.Nc3 Ne4 9.Qc2 Nc3 10.Bc3 ab5 (10...h6 11.bc6 Nc6 12.Rc1 Bf6 13.Bf6 Qf6 14.d4 Qd8 15.Qc3 dc4 16.Bc4 Bd7+=) 11.cb5 cb5 12.Bb5 Nc6 13.0–0 Bd6 14.Rfc1 f6 15.d4 Bd7 16.Bd3 f5+=.

8.d4 cb5 9.ab5 ab5?? 10.Ra8+– Bb4 11.Bc3 Na6 (11...Bc3 12.Nc3 bc4 13.Rb8+–) 12.cb5 (12.Bb4 Nb4 13.cb5 Qc7+–) 12...Bc3 (12...Nc7 13.Bb4 Na8 14.Bf8 Qf8 15.Bd3+–) 13.Nc3 Qa5 (13...Nc7 14.Ra7+–) 14.Qd2 Qa1 15.Nd1 (15.Ke2!? e5 16.Ne5 Bg4 17.Ng4 Ra8 18.Nf6 gf6 19.ba6 Qa6 20.Kf3 Qd6+–) 15…Nc7 1–0. DEFFM – GuestrFZYL, freechess.org, 2018.

8.Be2 ab5 9.ab5 Bd7?? 10.Ra8+– cb5 (10...Be8 11.Be5 Nfd7 12.Bf4 dc4 13.bc6 bc6 14.Bc4+–) 11.Be5 (11.Be5 bc4 12.Rb8+–) 1–0. DEFFM – GuestMGRQ, freechess.org, 2018.

8.Be2 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5 Qa5 (12...Bd7 13.Bd7 Nbd7 14.0–0=+) 13.Nc3 (13.Qa4 Qa4 14.Ba4 Bd7 15.Bf6 Bf6 16.Bd7 Nd7=) 13...Bd7 14.Qb1 Qb4 (14...Rc8 15.Be2=+) 15.0–0 Nc6 16.Bc6 (16.d3 Rc8=) 16...bc6 (16...Bc6 17.Qb4 Bb4 18.Ne5=+) 17.Qd3 (17.Qb4 Bb4 18.Rb1 c5=) 17...Qd6 18.Qc2 (18.Qd6 Bd6 19.Ne2 Rb8=) 18...c5 19.Rb1 (19.e4 Qf4=) 19...Bc6 (19...Ra8 20.d3=+) 20.Nb5= Be4 (20...Qd5 21.d3=) 21.Qe4 Ne4 22.Nd6 Nd6 23.Be5 (23.d3 f6=) 23...Nc4 (23...c4 24.Kf1=) 24.Rb7 (24.d3 Ne5 25.Ne5 f6+=) 24...Ne5 (24...Ra8 25.Bc3 Bf6 26.Bf6 gf6 27.g3=) 25.Ne5+= (worse 25.Re7 Nf3 26.gf3 Rd8=+) 25...Bd6 (25...Bf6 26.Nd7 Ra8 27.Kf1+=) 26.Nc4 Bb8 (26...Ra8 27.f4 Bf8 28.Kf2+=) 27.f4 g6 28.g4 Rd8 (28...Kg7 29.d3+=) 29.g5+– Bd6 (29...Kg7 30.Kf2+–) 30.Kf2 (30.Nd6?! Rd6 31.Rb2 h6=) 30...Kf8 (30...Kg7 31.d3+–) 31.Ke2 Bb8 (31...Kg7 32.Nd6 Rd6 33.Rc7+–) 32.Rb5 Bd6 (32...Rc8 33.Nb6 Rc7 34.Rc5+–) 33.h4 (33.Nd6 Rd6 34.Rc5 Rb6+–) 33...Kg7 (33...Be7 34.Rb7+–) 34.Rb6 (34.Nd6 Rd6 35.Rc5 Ra6+–) 34...Be7 (34...Bf8 35.Rb7 Re8 36.Rc7+–) 35.Ne5 (35.Rb7 Kf8+–) 35...Bd6 36.Nc4 (36.Nd3 Bf8+–) 36...Be7 37.Rb7 Bd6 (37...Kf8 38.Ne5+–) 38.d3 (38.Nd6 Rd6 39.Rc7 Ra6+–) 38...Bb8 39.Kd2 Re8 40.Rb5 e5 (40...Rc8 41.Ke2+–) 41.fe5 Be5 42.Ne5 Re5 43.d4 Re4 44.dc5 The passed pawn on c5 quickly leads to threats 44...Kf8 (44...Rh4!? 45.Kd3 Rh1+–) 45.Kd3 (45.c6 Ke7 46.Rb7 Kd8 47.Rf7 Rh4+–) 45...Rh4 46.c6 (better 46.Rb7!? Kg7 47.c6+–) 46...Ke7+– 47.Rd5 Ra4 (47...Rh1 48.Kd4+–) 48.Rd7 (48.e4 Ra6 49.Rc5 Kd8+–) 48...Ke6 49.Rd8 Ra7 50.Kd4 Ke7 51.Rd5 Ra4 (51...f6 52.gf6 Kf6 53.Rc5+–) 52.Ke5 (52.Kc5 Ra5 53.Kc4+–) 52...Ra7 (52...h5!?+–) 53.Rb5+– Ra3 54.Rb7 Kd8 55.e4 (55.Kd4 Ra4 56.Kd5 Ra3+–) 55...Rc3 56.Kd5 (56.Kd5 Rf3 57.Ra7+–) 1–0. Bulcourf,Carlos (2295) – Incutto,Carlos, Olivos op, 1993.

8.Be2 dc4 9.Bc4 Bd7 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Bb4 (12...Qb6 13.Ne5=) 13.0–0 Bc3 14.Bc3 cb5 15.Be2 Bc6 16.Ne5 (better 16.Rc1+=) 16...Ne8 (16...Nbd7!? 17.d3 Ne5 18.Be5 Nd7=) 17.Nc6 (17.Bb4 Nd6 18.Qa3 Nc4 19.Bc4 bc4+–) 17...bc6 (better 17...Nc6 18.Bb5 Qd5+=) 18.f4 (better 18.Bb4+–) 18...Nd7 19.d4 f6 (19...Ndf6 20.Bb4 Nd6 21.Qa3=) 20.Qa2 (20.Bb4 Rf7+=) 20...Qe7 (20...Nc7 21.Bb4 Rf7 22.Bh5=) 21.Qb3 (21.Bb4 Qb4 22.Qe6 Kh8 23.Qd7+=) 21...Qf7 (better 21...Nd6!?=) 22.Bb4+– c5? (better 22...e5!? 23.Qc3 ed4 24.ed4 c5 25.dc5 Nc7+–) 23.dc5+– (23.Bc5?! Nc5 24.dc5 Nc7+=) 23...e5 (23...Nc7 24.c6 Nb6 25.Bf8 Qf8 26.Bb5 Qc5+–) 24.c6 (better 24.Qf7 Rf7 25.Bb5 ef4 26.ef4+– (26.Rf4?! Nc7 27.Bc4 Ne5+–)) 24...Qb3–+ 25.cd7 Qe3 (25...Qb4?! 26.d8Q Nd6 27.Qb6–/+) 26.Rf2 Qd4 27.Bb5 (27.Bf8 Qd7 28.Bc5 ef4 29.Bf3–+) 27...Nc7 (better 27...Nd6 28.Bd6 Qd6 29.Bc4 Kh8 30.fe5 Qe5–+) 28.fe5 (28.Bf8 Nb5 29.Bc5 Qd7 30.fe5 Qd5–+) 28...Nb5 (better 28...Qb4 29.Bf1–+) 29.Bf8 Kf8 30.ef6 gf6 31.Kf1 0–1. GuestGPKZ – PaulFang, freechess.org, 2019.

8.Be2 Bd7 9.Nc3 ab5 10.ab5 Ra1 11.Ba1 Qa5 (11...dc4 12.Bc4 Qa5 13.Ne5=+) 12.Qb1 (12.cd5 ed5 13.bc6 bc6=) 12...Bb4 (12...dc4 13.Bc4 Rc8 14.0–0=) 13.Ne5 (13.cd5 Nd5 14.0–0 Bc3 (worse 14...cb5 15.Nd5 ed5 16.Bg7+–) 15.Bc3 Nc3 16.dc3 Qc3=) 13...Be8 (13...cb5 14.cb5 Bd6 15.f4=) 14.0–0 Nbd7 15.Nd3 (15.Nf3 Nc5=) 15...Bd6 16.Nc1 (16.cd5 cd5 17.Rc1 Nb6=) 16...dc4 (16...Qc7 17.bc6 bc6 18.cd5 Bh2 19.Kh1=) 17.bc6 bc6 18.Bc4 Bh2?? (better 18...Nb6 19.Be2 c5=) 19.Kh1?? (better 19.Kh2 Qh5 20.Kg1+–) 19...Qh5–+ 20.Rd1 Ne5 (20...Ng4 21.Ne4 Nc5 22.g3 Nf2 23.Kg2 Nce4 24.Ne2–+) 21.Be2 Qh4 22.Ba6 (22.Bd3–+) 22...Nf3! 23.g3 (23.gf3 Theme: Blockade 23...Bg3 Discovered attack) 23...Bg3 24.Kg2 Qh2 25.Kf3 Qf2 0–1. Bennett,Hilton Petrie – Rayner,Emmanuel (2310), Auckland op, 1996.

8.Be2 Nbd7 9.0–0 Bd6 10.d4 Ne4 (10...ab5 11.c5 Be7 12.ab5 Ra1 13.Ba1+=) 11.Nbd2 (11.c5 Be7+=) 11...f5 (11...Qf6 12.Ne4 de4 13.Nd2+=) 12.c5+= Bb8 13.b6 (13.Qc2 Qe7+=) 13...Qe8 14.Ne4 (14.Rc1 e5+=) 14...fe4= 15.Nd2 e5 16.f3 Qg6 (16...ef3 17.Rf3 Rf3 18.Bf3=) 17.fe4 de4? (17...Rf1!? 18.Kf1 ed4 19.Bd4 Bh2=) 18.Rf8 (18.Qc2 Qh6 19.Qb3 Kh8 20.Rf8 Nf8+–) 18...Kf8 (18...Nf8 19.Bc4 Kh8+–) 19.Bh5 (better 19.Qc2+–) 19...Qh6= 20.Qf1?? (better 20.Nf1=) 20...Nf6–/+ 21.de5 Qe3?? (better 21...Qh5 22.Nc4 Kg8 23.ef6 Bh2 24.Kf2 Be6–+) 22.Kh1+– Qd2 23.Rd1 Qb2 (23...Qd5+–) 24.Rd8 Ke7 25.Rc8 (25.Re8! Ne8 26.Qf7 Kd8 27.Qe8) 25...Qe5–+ 26.Re8 (26.Rb8 Rb8 (26...Qh5?! 27.Ra8 Qc5 28.Qb1+=) 27.Be2 Qc5–+) 26...Ne8 27.Qf7 (27.Qf7 Kd8 28.g3–+). GuestHGHT – GuestCVYK, freechess.org, 2019.

8.Be2 Nbd7 9.Nc3 Qb6 (9...Nb6 10.cd5 ed5 11.bc6 bc6 12.0–0=) 10.0–0+= Bb4 (10...ab5 11.ab5 Ra1 12.Qa1+=) 11.Qb3+– a5 12.d4 c5 13.Na2 Ne4 (13...cd4 14.Nb4 Nc5 15.Qc2 (15.Bd4?! Nb3 16.Bb6 Na1=+) 15...ab4 16.Bd4+–) 14.Nb4 cb4 15.c5 Qd8 16.Qc2 b6 (16...Qc7!?+–) 17.c6+– Qc7 18.Bd3 Ndf6 19.Ne5 Re8 20.f3 Nd6 21.Rae1 Nf5 (21...h6+–) 22.g4 Nh4 (22...Nd6 23.g5 Nh5 24.Bh7 Kf8 25.f4+–) 23.g5 (23.g5 Nh5 24.Bh7 Kh8 25.g6+–) 1–0. Janek – Frederico, internet, 2018.

8.Nc3 ab5

9.cb5 c5 10.d4 b6 11.dc5 bc5 (11...Bc5 12.Bd3=+) 12.Be2 Bb7 13.0–0 Bd6 14.Qe1 e5 (14...Ra5 15.Nd1=) 15.a5+= Ra5 (15...e4!? 16.Nh4 d4+= (16...Ra5? 17.Ra5 Qa5 18.Nd5+–)) 16.Ra5+– Qa5 17.Nd5 Qe1 (17...Qd8 18.Nf6 Qf6 19.Qa5+–) 18.Nf6 (18.Ne1?? Bd5 19.Nd3 Nbd7–+) 18...gf6 19.Re1 Nd7?? (better 19...Rd8+–) 20.Rd1+– e4 21.Nh4 (worse 21.Rd6 ef3 22.gf3 Ne5 23.Rf6 Re8+–) 21...Be5 22.Rd7 Bb2 (22...Bc8 23.Rd2+–) 23.Rb7 Rc8 (23...Kg7 24.Bh5 Rd8 25.b6+–) 24.Bc4 Rd8 (24...Ra8 25.g3+–) 25.g3 1–0. Janek – Vindo, internet, 2018.

9.cb5 c5 10.d4 cd4 11.Nd4 (11.Qd4 Nbd7=) 11...Bb4 (11...e5 12.Nf3 Qc7 13.Rc1= (13.Nd5? Nd5 14.Bd3 Bb4 15.Kf1 f6–+)) 12.Bd3= Ne4 (12...e5 13.Nc2 Ba5 14.0–0=+) 13.Be4 de4 14.Qb3 (14.Nc2 Bc3 15.Bc3 Qg5=) 14...Ba5=+ 15.Qc2 f5 (15...e5 16.Nb3 Qd3 17.Qd3 ed3 18.Na5 Ra5 19.Ne4+=) 16.Qb3 (16.Rd1 Qc7=) 16...Qf6 17.0–0 Kh8 18.Rfd1 e5 (18...Rd8 19.Ne4 fe4 20.Nc6 Rd1 21.Rd1+–) 19.Nd5 Qf7 20.Ne2 Be6 (20...Nd7 21.Qc2+=) 21.Be5 Nd7 22.Bc3 Nc5 23.Qa3 Bc3 (23...Rfc8!? 24.Ba5 Bd5=) 24.Ndc3+= Nd3 (24...Rfc8 25.Qb4+=) 25.Nd4 (25.a5 Qf6+=) 25...Bc4 26.a5 Ne5 (26...Rfd8 27.Rd2+=) 27.Qd6+– White prepares a6 27...Ng4 (27...Nd3 28.a6 ba6 29.ba6+=) 28.h3 (28.a6 ba6 29.Ra6 Rfd8+–) 28...Nf6 (28...Rfd8 29.Qf4 Nh6 30.f3 ef3 31.Qf3+–) 29.a6 (29.Qc5 Nh5+–) 29...ba6+– 30.Ra6 Rad8 (30...Ra6 31.Qa6 Nd7 32.Qd6+–) 31.Qb4 (31.Qe5 Nd7 32.Qc7 Rc8+–) 31...Bd3? (better 31...Rc8+–) 32.Ne6 (32.Nf5?! Nd5 33.Nd5 Rd5=) 1–0. Janek – Mahdus, internet free game, 2017.

9.ab5 Ra1

10.Qa1 cb5 11.cb5 Nbd7 12.Bd3 Nc5 (12...e5 13.Be2=+) 13.Bc2= Qb6 14.0–0 Rd8 (14...Bd7 15.Ba3 Bd6 16.d4=) 15.Ba3+= Bd6 16.Bb4 Nce4?? (better 16...Bc7+=) 17.Ba5+– Qc5 (17...Bh2 18.Nh2 Qd6 19.Bd8 Qd8 20.Ne4 de4 21.Qe5+–) 18.Bd8 Nc3 (18...Bd7 19.Qa8 Qc8 20.Qc8 Bc8 21.Ne4 Ne4 22.Ra1+–) 19.Qc3 Qb5 (19...Qc3 20.dc3 Ne8+–) 20.Bf6 gf6 21.Qc8 (21.Qc8 Kg7 22.Rb1+–) 1–0. GuestYXKJ – PaulFang, freechess.org, 2019.

10.Qa1 cb5 11.cb5 Nbd7 12.d4 Nb6 (12...Bd6 13.Bd3=) 13.Bd3 (13.Ba3 Bd7 14.Bc5 Bc5 15.dc5 Nc8=) 13...Qc7 (13...Bd7 14.Ne5=) 14.0–0 (14.Ba3 Ba3 15.Qa3 Nc4+=) 14...Bd7= 15.Rc1 Nc4 (15...Ra8 16.Qb1 Nc4 17.Ne5=) 16.e4 Ne4? (better 16...Rc8!? 17.e5 Ne8=) 17.Bc4 (17.Ne4 Bb5 18.Ned2 Rc8+–) 17...Nc3 (17...dc4 18.Ne4 Bb5 19.Ned2+–) 18.Bd3 1–0. GuestYRGC – GuestQYXB, freechess.org, 2018.

10.Qa1 dc4 11.Bc4 cb5 12.Nb5 Bd7 13.0–0 Bb5 14.Bb5 Nbd7 (14...Qd5 15.Bf6 Bf6 16.Qb1+=) 15.d4 Qb6 16.Qa4 Rd8 17.Rb1 Qd6 18.Ne5 Nb6 (18...Qd5 19.Bc4 Qe4 20.Bd3+=) 19.Qa7+– Nbd5 20.Nf3 (20.Bd3 Qb8 21.Ra1+=) 20...Ne4 (20...Qb4!? 21.Bd3 Rc8+=) 21.Bd3+– (21.Qb7? Rb8 22.Qc6 Qc6 23.Bc6 Ba3–+) 21...Nec3 (21...f5!?+–) 22.Bc3+– Nc3 23.Rb7 h6 1–0. GuestZSNL – emmawoodhouse, freechess.org, 2019.

10.Qa1 Qc7 11.Be2 b6 (11...dc4 12.Bc4 cb5 13.Bb5=) 12.bc6 (12.cd5 ed5 13.bc6 Nc6=) 12...Nc6 (12...dc4 13.Qa4=) 13.Nb5 (13.cd5 ed5 14.0–0 Bf5=) 13...Qb8 (13...Qd7 14.cd5 Qd5 15.0–0=) 14.0–0 (14.cd5 ed5 15.Qb1 Ne4+=) 14...Bb7 (14...dc4 15.Rc1=) 15.d4 (15.cd5 ed5 16.Nfd4 Qc8+=) 15...Ne4 (15...dc4 16.Bc4 Rc8 17.Rc1=) 16.cd5+= ed5 17.Qb1 (17.Ba3 Qd8+=) 17…Ba6 1–0. GuestKDZJ – GuestFQTF, freechess.org, 2017.

10.Qa1 Nbd7 11.Be2 Nb6 (11...cb5 12.cd5 b4 13.Nb5 ed5 14.0–0=) 12.Ne5 (12.d3 Qc7=) 12...Nfd7 (12...c5 13.d3=) 13.Nd7 Bd7 14.bc6 (14.cd5 cd5 15.Na4 f6=+) 14...bc6 15.Na4 (15.d3 Bd6=) 15...f6 (15...Na4 16.Qa4 Bd6 17.d4=+) 16.Nb6 Qb6 17.0–0 Rb8 18.Bc3 c5 19.Bd3 (19.d4 Bc6=) 19...Qd6 (19...Bd6 20.f4=) 20.Rb1 Bd8 (20...Rd8 21.Qa2=) 21.Rb8 Qb8 22.Qa2 Bc6 23.Qc2 (23.cd5 Bd5 24.Qa4 Bc7=) 23...h6 (23...f5 24.cd5 Bd5 25.e4 fe4 26.Be4 Be4 27.Qe4=) 24.cd5 ed5 (24...Bd5 25.Bh7 Kh8 26.Bg6=) 25.Bg6 (25.Bd4 c4 26.Bf5 Bc7=) 25...Qd6 26.d4 c4 27.Qa2 (27.Qf5 Bd7 28.Qh5 Kh8=) 27...Be7 (27...Bc7 28.g3=) 28.g3 (28.Bf5 Qb8=) 28...Qa3 29.Qc2 (29.Qb1 Qd6=) 29...Bd7 30.e4 Ba4 (30...Be6 31.f4=) 31.Qd2 Bc6 ½–½. Schuehler,Ernst – Fechner,Juergen, corr DDR–Cup3 sf04, 1973.

10.Qa1 Nbd7 11.Be2 Nc5 12.0–0 Bd7 (12...Qd6 13.d4 Nce4 14.c5+=) 13.d4 Nce4 14.Ne4 (14.bc6 Bc6 15.c5 Nd7+=) 14...Ne4= 15.Ne5 f6 (15...cb5!? 16.cb5 Be8=) 16.Nd7+= Qd7 17.c5 Nd2 18.Rd1 Nc4 19.bc6 Qc6 (19...bc6 20.Bc3+=) 20.Bc3 (20.Qa7 Bd8 21.Bc3 Bc7+–) 20...b5+= 21.Qa7 (21.Qb1+=) 21...Kf7 (better 21...Ra8 22.Qe7 Re8=) 22.Ra1+– e5 (better 22...Rc8!?+–) 23.Bg4+– g6?? (23...b4 24.Bb4 Rd8+–) 24.Bd7 Bc5 (24...Qa8 25.Qa8 Ra8 26.Ra8 g5+–) 25.dc5 (25.dc5 Ra8 26.Bc6 Ra7 27.Bd5 Kg7 28.Ra7 Kh6 29.Bc4 Kg5 30.Bb5 h6 31.c6 Kg4 32.c7 f5 33.c8Q Kh5 34.Be2 Kh4 35.Rh7 e4 36.Qf5 gf5 37.Bf6) 1–0. DEFFM – GuestYWPN, freechess.org, 2018.

10.Qa1 Nbd7 11.Be2 Nc5 12.d4 Nce4 13.c5 Nc3 (13...cb5 14.Bb5 Bd7 15.Bd7 Nd7 16.Ne4 de4 17.Nd2+=) 14.Bc3+= Ne4 (14...cb5 15.Ne5+=) 15.Ba5 Qe8 16.0–0 f6 17.Rb1 (17.Qb2 e5+=) 17...Bd7 (17...e5 18.Bb6+=) 18.bc6 bc6 19.Nd2 (19.Rb7 Bc8 20.Ra7 e5+=) 19...Nd2 (19...f5 20.Nf3+–) 20.Bd2 Qa8 (20...Bc8 21.Rb8+=) 21.Qa8 (21.Bd3 e5+–) 21...Ra8 22.Rb7 (22.Kf1 Be8+=) 22...Ra2 (22...Bc8!? 23.Rb6 Bd7+=) 23.Rd7+– Rd2 (23...Kf7!?+–) 24.Re7+– Re2 25.Kf1 Ra2 26.Re6 Ra6 27.Re7 Kf8 (27...f5 28.h4+–) 28.Rb7 h5? (better 28...Ra8+–) 29.Rb6 Ra1 30.Ke2 Rh1 (30...Rg1 31.g3 h4 32.Rc6+–) 31.h3 Rg1 32.Kf3 g5 (32...Rc1 33.Rc6 Ke8 34.Rd6+–) 33.Rc6 Kf7 34.Rd6 g4 (34...f5 35.Rd5 Ke6 36.Rd6 Kf7 37.Rd7 Kf6 38.c6+–) 35.hg4 hg4 36.Kg3 f5 (36...Ke7+–) 37.Rd5 Ke6 38.Rd6 (38.Re5!? Kd7+–) 38...Ke7 39.d5 Rc1 40.Re6 Kd7 (40...Kf7 41.c6 Rc5 42.Re5+–) 41.c6 Kc7 42.Rf6 1–0. DEFFM – GuestSQFZ, freechess.org, 2018.

9.cb5 cb5

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.0–0 Nc5 14.d4 (14.Na4 Na4 (14...Qa5 15.Nc5 Qa1 16.Ra1 Bc5 17.d4 Bd6 18.Bd3 Ne4 19.b6 f6; 14...Qa7 15.Nc5 Qa1 16.Ra1 Bc5 17.Ne5 Bd6 18.d3 Nd7 19.d4 f6) 15.Qa4 Ne4 16.Rc1 Bd7 17.Bd4 Qd8 18.Qa7 Bc8 19.b6 f6; 14.Ne5 Nce4 (14...Nb3 15.Qd1 Nc5 16.d4 Ncd7 17.Qd2 Bd6 18.f4 Bb4 19.Qc2 h5; 14...Nfd7 15.d4 Nb3 16.Qa4 Ne5 17.Qb3 Nc4 18.Bc4 dc4 19.Qc4 Bd7; 14...h6 15.d4 Ncd7 16.Rc1 Qd6 17.f4 Rd8 18.Qa4 h5 19.Qc2 Qb8; 14...Qd8 15.d4 Ncd7 16.Rc1 Ne5 17.de5 Nd7 18.Na4 h6 19.Bd3 f6; 14...Ncd7 15.Na4 Qa5 16.Bc3 Qa7 17.Nd3 Bd6 18.f4 b6 19.Bd4 Qa5) 15.d4 Nc3 16.Bc3 Bd7 17.Qb2 Ra8 18.Bb4 Bd6 19.Bd6 Qd6; 14.h3 Nfe4 15.Na4 Na4 16.Qa4 f6 17.Rc1 Bd7 18.Bd4 Nc5 19.Bc5 Bc5; 14.Qa3 Qd6 (14...Qd8 15.Qa7 Bd6 16.b6 Nce4 17.d3 Nc3 18.Bc3 Nd7 19.Rb1 Nb8; 14...Re8 15.Na4 Na4 16.Qa4 Ne4 17.Rc1 Qd6 18.Qa1 Bf6 19.Bf6 Nf6; 14...Qc7 15.Qa7 Nb3 16.Qa2 Na5 17.Na4 Nc4 18.Rc1 Qa5 19.Bc4 dc4; 14...Bd6 15.Na4 Na4 16.Qa4 Bd7 17.Rc1 Rc8 18.Rc8 Bc8 19.Qa1 Qd8) 15.Na4 Nce4 16.Qd6 Nd6 17.Be5 Bd7 18.Nb6 Be8 19.Nd4 Nd7) 14...Nce4 15.Ne4 (15.Ne5 Bd6 16.Rc1 Rd8 17.f3 Be5 18.fe4 Ne4 19.Ne4 de4) 15...Ne4 16.Rb1 (16.Ba3 Ba3 17.Qa3 f6 18.Rc1 Bd7 19.Bd3 Nd6) 16...Bd7 17.Bc1 (17.Ne5 Be8 18.Bc3 Nc3 19.Qc3 f6) 17...Rc8 18.Bd2 (18.Bd3 f6 19.Bd2 Nd2) 18...Rc2 (18...Nd2 19.Nd2 Rc2) 19.Rb2 (19.Ba5 Qa7) 19...Qc7 (19...Rb2=+) 20.Rc2 Qc2 21.Qe1 (21.Qa8 Bc8=) 21...Nd2 (better 21...Qb2!?–/+) 22.Qd2= (22.Nd2?? Bb4–+) 22…Qb1 (22...Qb1 23.Qe1 Qe1 24.Ne1 f6=). Van Esbroeck,Dirk – Fernandez,German, IECG, 2010.

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.0–0 Qd6 A) 14.Na4 Re8 (14...Qb4 15.Rc1 g6 16.Bc3 Qa3 17.Qa3 Ba3 18.Bb2 Bd6 19.Nb6 Nb6; 14...g6 15.Rc1 Qb4 16.Bc3 Qa3 17.Qa3 Ba3 18.Bb2 Bd6 19.Nb6 Nb6; 14...b6 15.Bd4 h6 16.Ne5 Ne4 17.Nd7 Bd7 18.Be5 Qb4 19.Nb6 Bb5; 14...h6 15.Rc1 Qb4 16.Bd3 Bd6 17.h3 Re8 18.b6 Qb3 19.Be2 Qb4; 14...Rd8 15.Rc1 h6 16.h3 Re8 17.d3 Qb4 18.Nd4 Qa5 19.Bc3 Qa7) 15.Rc1 g6 16.h3 Ne4 17.d3 Nef6 18.b6 Qb8 19.Rc7 Qa8; B) 14.Rc1 e5 (14...Qb4 15.Na4 g6 16.Bc3 Qa3 17.Qa3 Ba3 18.Bb2 Bd6 19.Nb6 Nb6; 14...g6 15.Na4 Qb4 16.Bc3 Qa3 17.Rc2 Qa1 18.Ba1 Ne4 19.Ne5 Ne5; 14...Nb6 15.Na4 Nc4 16.Bc4 dc4 17.Be5 Qd5 18.Nb6 Qb5 19.Nc4 Bd7; 14...h6 15.Na4 Qb4 16.Nd4 g6 17.d3 Re8 18.Qa2 e5 19.Nf3 Qb5; 14...Rd8 15.Na4 Qb4 16.Bd3 Qb3 17.Rc3 Qb4 18.Qc1 Qa4 19.Rc8 Qb3) 15.Na4 e4 16.Nd4 g6 17.Rc3 Qb8 18.Ba3 Ba3 19.Qa3 Re8; C) 14.d4 Nb6 (14...Re8 15.Qa2 b6 16.Ra1 Bb7 17.Ba3 Qa3 18.Qa3 Ba3 19.Ra3 Rc8; 14...h6 15.Rc1 Qb4 16.h3 Nb6 17.Ne5 Bd7 18.Nd3 Qd6 19.Qa7 Ra8; 14...g6 15.Qa5 Qb8 16.Ba3 b6 17.Qa4 Ba3 18.Qa3 Bb7 19.h3 Rc8) 15.Qa2 Bd7 16.Ne5 Ra8 17.Qb3 Be8 18.Bd3 Nfd7 19.Nf3 Qb4; D) 14.Qa2 e5 (14...Qb4 15.Ra1 Ne4 16.Ba3 Qa3 17.Qa3 Ba3 18.Ra3 b6 19.Ra7 Nc3; 14...Ne5 15.Ne5 Qe5 16.d4 Qb8 17.Ra1 Bd7 18.Qa7 Bd6 19.g3 b6; 14...Nb6 15.Ra1 Bd7 16.Ba3 Qa3 17.Qa3 Ba3 18.Ra3 Ra8 19.Ra8 Na8; 14...h6 15.d4 b6 16.Qa7 Qb4 17.Rb1 Ne4 18.Ba1 Qa3 19.Qa3 Ba3; 14...b6 15.Qa7 Ne4 16.Nd4 Bf6 17.Ne4 de4 18.Ba3 Nc5 19.Rc1 e5) 15.d3 d4 16.ed4 ed4 17.Na4 Ne5 18.Nd4 Nd5 19.g3 Bh3; E) 14.Qa7 Qb4 (14...Nb6 15.Ra1 Re8 16.h3 Nc4 17.Bc4 dc4 18.Ba3 Qd8 19.Be7 Re7) 15.Rb1 h6 16.h3 Re8 17.Qa2 Ne4 18.Bd3 Ndc5 19.Bc2 Ng5.

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.0–0 Rd8 A) 14.Ba3 Bd6 (14...Ba3 15.Qa3 Qc5 16.Qb2 e5 17.d4 Qd6 18.Ra1 ed4 19.Nd4 Nc5) 15.Na4 Qc7 16.Rc1 Qb8 17.Bd6 Qd6 18.Qb2 b6 19.Qc3 Ne8; B) 14.d4 Ne4 (14...Qd6 15.Qa5 b6 16.Qa7 Qb4 17.Na4 Bd6 18.Ra1 Qb3 19.Ne5 Ne4; 14...Bb4 15.Qa4 Bd6 16.Rc1 Nf8 17.Qb3 Bd7 18.Na4 Qa7 19.Bd3 Ra8; 14...Nf8 15.Rc1 Ng6 16.Bd3 Bd7 17.Na4 Qa7 18.Nc5 Qb6 19.Bc3 Rc8; 14...Ne8 15.Ba3 Nd6 16.Bb4 Qc7 17.Rc1 Qb8 18.Bd3 Bf6 19.Qa5 b6; 14...g6 15.Ba3 Bd6 16.Rc1 Ne8 17.Qb2 Ba3 18.Qa3 Qd6 19.Qa5 Nb6) 15.Ba3 Ba3 16.Qa3 Ndf6 17.Ne4 Ne4 18.Rc1 Bd7 19.Qe7 f6; C) 14.Rc1 Qd6 (14...Qc5 15.Na4 Qd6 16.h3 h6 17.Rc2 Re8 18.Qc1 Qb8 19.Ba3 Ba3; 14...Nc5 15.Na4 Na4 16.Qa4 Bd7 17.Bd4 Qd6 18.Ne5 Rc8 19.Rc8 Bc8; 14...Bb4 15.d4 Ne4 16.Qa8 Qa5 17.Qa5 Ba5 18.Ne4 de4 19.Ng5 Nf6; 14...Bd6 15.d4 Bb4 16.Bd3 Qd6 17.Qa4 Nb6 18.Qa7 Nc4 19.Bc4 dc4) 15.Na4 g6 16.Rc2 Qb4 17.Qc1 Qa4 18.Rc8 Qa5 19.Rc7 Ne4; D) 14.Na4 Qd6 (14...Qc7 15.Rc1 Qd6 16.h3 h6 17.d3 Qb4 18.Nd4 Re8 19.Qa2 g6; 14...Qa5 15.Bc3 Qa8 16.Rc1 Re8 17.h3 Bd6 18.d3 e5 19.d4 e4; 14...Qa7 15.Rc1 Bd6 16.b6 Qa5 17.Bc3 Bb4 18.Bb4 Qb4 19.Qd4 Qd4) 15.Rc1 h6 16.h3 Bf8 17.Qa2 Qb4 18.Bc3 Qa3 19.Qc2 Ne4.

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.0–0 h6 A) 14.Ba3 Ba3 (14...Qd8 15.d4 Ne4 16.Bd3 Nd6 17.Rc1 b6 18.Na4 Nc4 19.Bc4 dc4; 14...Re8 15.Be7 Re7 16.Rc1 Re8 17.Qa8 Qc7 18.Qa3 Qd8 19.Qd6 Ne4; 14...Bd6 15.d4 Ne4 16.Rc1 Ba3 17.Qa3 Qd6 18.Ra1 Qa3 19.Ra3 f5) 15.Qa3 Qc5 16.Qc5 Nc5 17.Rc1 Nb3 18.Rb1 Nc5 19.d4 Nce4; B) 14.Na4 Qa5 (14...Qd8 15.Rc1 Bd6 16.b6 Qe7 17.h3 e5 18.Rc2 Ne4 19.Qc1 Qd8; 14...Qd6 15.Rc1 Qb4 16.Bd3 Bd6 17.Bc3 Qa3 18.Qa3 Ba3 19.Bb2 Bd6; 14...Qa7 15.Rc1 Bb4 16.Bc3 Bc3 17.Nc3 Qa1 18.Ra1 Ne4 19.Ra3 b6; 14...Qc7 15.Rc1 Qa5 16.Bc3 Qd8 17.Qb2 Bd6 18.Bb4 Qe7 19.Bd6 Qd6) 15.Bc3 Qd8 16.Rc1 Bd6 17.h3 Re8 18.d3 e5 19.d4 e4; C) 14.d4 Qd6 (14...Re8 15.Qa4 Ne4 16.Rc1 Qd6 17.Ne4 de4 18.Nd2 Qd5 19.Rc7 Bd6; 14...Ne4 15.Rc1 Ndf6 16.Ne5 Bd7 17.Ne4 de4 18.d5 ed5 19.Nd7 Nd7; 14...Bd6 15.Rc1 Qd8 16.h3 Re8 17.Qa2 Qe7 18.Nd2 Bb4 19.Ra1 b6) 15.Rc1 Nb6 16.Ne5 Qb4 17.Rb1 Nfd7 18.Nd7 Nd7 19.Qa7 Nf6; D) 14.h3 e5 (14...Nc5 15.Na4 Na4 16.Qa4 Ne4 17.Rc1 Bd7 18.Bd4 Nc5 19.Qa3 Rc8; 14...Qd6 15.Na4 b6 16.Ne5 Ne4 17.Nd7 Bd7 18.Be5 Qb4 19.Nb6 Bb5; 14...Bb4 15.Rc1 Qd6 16.Na4 Re8 17.Rc2 Qb8 18.b6 Bd6 19.Bb5 Rd8; 14...Qc5 15.Rc1 Qb4 16.Na4 Bd6 17.Nd4 Re8 18.d3 Bf8 19.Bc3 Qa3; 14...Qc7 15.Rc1 Qd6 16.Na4 Re8 17.Rc2 Bf8 18.Qc1 Qb8 19.b6 Ne4) 15.Na4 Qa5 16.Rc1 Re8 17.Bc3 Bb4 18.d4 Bc3 19.Nc3 Qa1; E) 14.Rc1 Qd6 (14...Qc5 15.Ne4 Qb4 16.Nf6 Nf6 17.Bd3 Re8 18.g3 h5 19.Rc7 Bd6; 14...Re8 15.Ba3 Ba3 16.Qa3 e5 17.d4 ed4 18.Nd4 Ne5 19.Qb4 Bg4; 14...Bd6 15.d4 Qd8 16.Qa2 Qe7 17.Qa7 Re8 18.g3 g6 19.b6 Qd8; 14...Qd8 15.d4 Bd6 16.h3 Qe7 17.Qa5 Qd8 18.Qa7 Re8 19.Ba3 Qe7; 14...Bb4 15.d4 Ne4 16.Qa8 Qd8 17.Qa2 Qe7 18.Qa7 Nc3 19.Bc3 Ba3) 15.Na4 Qb4 16.Bd3 Bd6 17.b6 e5 18.Bc3 Qa3 19.Be2 Ne4.

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.Na4 A) 13...Qd8 A1) 14.h3 b6 (14...Re8 15.0–0 Bd6 16.Rc1 Qa5 17.Bc3 Qd8 18.d3 Qe7 19.Qa2 h6; 14...g6 15.0–0 Ne4 16.Rc1 Qa5 17.Nc3 Qa1 18.Ra1 Ndc5 19.Ra7 f6; 14...Bb4 15.0–0 Qa5 16.Bc3 e5 17.Qb2 Bc3 18.Nc3 e4 19.Nd4 Ne5; 14...Qa5 15.0–0 Bd6 16.Rc1 h6 17.Bc3 Qd8 18.b6 Qe7 19.Bb2 e5; 14...Bd6 15.0–0 Qe7 16.Rc1 e5 17.Qa2 Rd8 18.d3 h6 19.Qb3 e4) 15.0–0 Bb4 16.Rc1 Bb7 17.Bd4 Ba5 18.Qb2 Re8 19.d3 g6; A2) 14.g3 Re8 (14...Bb4 15.0–0 b6 16.Rc1 Bb7 17.Bd4 Ba5 18.Qb2 Qa8 19.Ne5 Ne5; 14...Qa5 15.0–0 Bb4 16.Nc3 Qa1 17.Ra1 e5 18.d4 e4 19.Nd2 Nb6; 14...Bd6 15.0–0 Qe7 16.Rc1 e5 17.Qa2 e4 18.Nd4 Ne5 19.Nb6 Be6; 14...h6 15.0–0 Bd6 16.Rc1 Qe7 17.Rc2 Re8 18.Qc1 Qd8 19.d4 Ne4; 14...g6 15.0–0 Ne4 16.Rc1 Qa5 17.Nc3 Qb4 18.Nd4 Nb6 19.d3 Nf6) 15.0–0 Bd6 16.Rc1 e5 17.Ba3 Ba3 18.Qa3 Qa5 19.Ra1 e4; A3) 14.0–0 Bd6 (14...g6 15.Rc1 Ne4 16.h3 Qa5 17.Nc3 Qa1 18.Ra1 Ndf6 19.Na4 Nd7; 14...Re8 15.Rc1 Bd6 16.h3 e5 17.Ba3 Ba3 18.Qa3 Qa5 19.d4 Nb6; 14...h6 15.Rc1 Bb4 16.Bd3 Bd6 17.g3 Re8 18.Ne5 Qa5 19.Bc3 Bb4; 14...Qa5 15.Bc3 Qa8 16.Rc1 Re8 17.d3 h6 18.h3 Qa7 19.Bd1 Bd6; 14...Bb4 15.Rc1 Qa5 16.Rc2 Bd6 17.h3 g6 18.Bc3 Qd8 19.d3 Re8) 15.Rc1 Re8 16.h3 Qa5 17.Bc3 Qa8 18.d3 e5 19.d4 e4; B) 13...Qd6 14.0–0 b6 (14...g6 15.Rc1 Qb4 16.Bc3 Qa3 17.Qa3 Ba3 18.Bb2 Bd6 19.Nb6 Nb6; 14...Qb4 15.Rc1 g6 16.Bc3 Qa3 17.Bd4 Re8 18.Qa3 Ba3 19.Bb2 Bd6; 14...h6 15.Rc1 Qb4 16.h3 Bd6 17.Nd4 Re8 18.d3 e5 19.Nf5 Bf8; 14...Re8 15.Rc1 h6 16.h3 Qb4 17.Rc2 Bd6 18.Bc3 Qe4 19.d3 Qf5) 15.Bd4 Re8 16.h3 Bf8 17.Ne5 Ne4 18.Nd7 Bd7 19.Be5 Qb4; C) 13...Qa7 14.0–0 Bb4 (14...Re8 15.Rc1 g6 16.h3 Ne4 17.Bd4 Qa5 18.Rc2 Ndc5 19.Nc5 Qa1; 14...g6 15.Rc1 Ne4 16.Nc3 Qa1 17.Ra1 Ndc5 18.Ra7 f6 19.d3 Nc3; 14...Qa5 15.Bc3 Qa8 16.Rc1 Re8 17.h3 Bd6 18.b6 e5 19.Bb5 h6; 14...Bd6 15.Rc1 Qa5 16.Bc3 Qd8 17.d3 Qe7 18.Qa2 e5 19.d4 e4; 14...h6 15.Rc1 Qa5 16.Bc3 Qd8 17.Qb2 Re8 18.b6 Bf8 19.g3 Ne4) 15.Rc1 Qa5 16.Rc2 Bd6 17.h3 h6 18.Bc3 Qd8 19.Qb2 Qe7; D) 13...Qa5 D1) 14.Bc3 Qa7 (14...Qa8 15.0–0 Re8 16.Rc1 Bd6 17.h3 e5 18.d4 e4 19.Ne5 g6; 14...Qd8 15.0–0 Bd6 16.Rc1 h6 17.h3 Qe8 18.b6 e5 19.d4 e4; 14...Qc7 15.0–0 Qd6 16.Rb1 Qa3 17.d3 Qa1 18.Ra1 Bd6 19.Rc1 g6; 14...Bb4 15.0–0 Bc3 16.Nc3 Qa1 17.Ra1 Ne4 18.Na4 Nd6 19.d4 Nf6) 15.0–0 Bd6 16.Rc1 b6 17.Nd4 Ne4 18.Nc6 Nc3 19.Nc3 Qa1; D2) 14.0–0 Bd6 (14...g6 15.Bc3 Qd8 16.d3 Bd6 17.Rc1 Re8 18.Qb2 Qe7 19.Qb3 e5; 14...Re8 15.Rc1 Bd6 16.Bc3 Qd8 17.d3 e5 18.d4 e4 19.Ne5 g6; 14...Bb4 15.Bc3 Bc3 16.Nc3 Qa1 17.Ra1 Ne4 18.Rc1 Nd6 19.h4 Nb6; 14...h6 15.Bc3 Qd8 16.Rc1 Bd6 17.h3 Qe7 18.Rc2 Re8 19.d3 e5; 14...Qb4 15.Rc1 g6 16.Bc3 Qa3 17.Qa3 Ba3 18.Bb2 Bd6 19.Nb6 Nb6) 15.Rc1 Re8 16.h3 Ne4 17.d3 Nef6 18.Nc3 Qb4 19.Rb1 e5.

10.ab5 Ra1 11.Qa1 Nbd7 12.Be2 Qb6 13.d4 A) 13...Qd6 A1) 14.Bd3 b6 (14...Nb6 15.0–0 Bd7 16.Ne5 Qb4 17.Na2 Qa4 18.Nc3 Qb4 19.Na2 Qa4; 14...Qb4 15.0–0 Nb6 16.Rb1 Nc4 17.Bc1 Qd6 18.Bc4 dc4 19.Ne5 Nd5) 15.Ke2 e5 16.de5 Ne5 17.Nd5 Nd3 18.Ne7 Qe7 19.Bf6 Nf4; A2) 14.0–0 Nb6 (14...b6 15.Qa7 Qb4 16.Rb1 Ne4 17.Ba1 Qa3 18.Qa3 Ba3 19.Ne4 de4; 14...e5 15.de5 Ne5 16.Rd1 Nf3 17.Bf3 Be6 18.Nd5 Nd5 19.e4 f6) 15.Qa7 Nc4 16.Bc4 Qb4 17.Rb1 dc4 18.Ba1 Qa3 19.Qa3 Ba3; B) 13...Ne4 14.0–0 Ndf6 (14...Nc3 15.Bc3 Nf6 16.Ne5 Bd7 17.Qb2 Ra8 18.Bb4 Bd6 19.Bd3 Be8; 14...Nd6 15.Rc1 g6 16.Ba3 Qd8 17.Bb4 Kg7 18.Qa2 b6 19.Na4 Nf5; 14...Qd6 15.Rc1 b6 16.Ne4 de4 17.Nd2 Qd5 18.Ba3 Ba3 19.Qa3 Bb7; 14...h6 15.Rc1 Qd6 16.Ne4 de4 17.Nd2 Nf6 18.Nc4 Qd8 19.Qa7 Nd5; 14...Bd6 15.Rc1 Ndf6 16.Ne5 Rd8 17.Ba3 Bd7 18.Bd6 Nd6 19.Na4 Qa5) 15.Ne5 Bd6 16.Rc1 Rd8 17.Ba3 Bd7 18.Bd6 Nd6 19.Na4 Qa5; C) 13...Bd6 14.0–0 Ne4 (14...Qd8 15.Qa7 e5 16.de5 Ne5 17.Qd4 Re8 18.Rd1 Nf3 19.Bf3 Be5; 14...h6 15.Rc1 Qd8 16.Ba3 Qe7 17.Bd6 Qd6 18.Qa8 Nb6 19.Qa7 Bd7; 14...Bb4 15.Rc1 Ne4 16.Ne4 de4 17.Ng5 Nf6 18.Bc3 Bc3 19.Qc3 h6; 14...Re8 15.Rc1 Qd8 16.h3 h6 17.Qa2 Qe7 18.Nd2 Nb6 19.Qa7 Nbd7; 14...g6 15.Rc1 Bb4 16.h3 Re8 17.Bd3 Qd6 18.Qa2 Nb6 19.Qa7 Bd7) 15.Rc1 Ndf6 16.Ne5 g6 17.Ne4 Ne4 18.Qa8 Bc7 19.f3 f6; D) 13...Qc7 D1) 14.Bd3 Nb6 (14...b6 15.Ke2 Bb7 16.Rc1 Qb8 17.Ba3 Ba3 18.Qa3 e5 19.de5 Ne5; 14...Bb4 15.0–0 Nb6 16.Rc1 Nc4 17.Ne5 Bd7 18.Bc4 dc4 19.Qa4 Bd6) 15.Ba3 Ba3 16.Qa3 Bd7 17.0–0 Ra8 18.Qb4 Nc4 19.Bc4 Qc4; D2) 14.0–0 Nb6 (14...h6 15.Rc1 Qd6 16.Qa5 Qb4 17.Qb4 Bb4 18.Ra1 Ne4 19.Ne4 de4; 14...Re8 15.Rc1 Qd6 16.Qa5 Qb4 17.Qb4 Bb4 18.Ra1 h6 19.Ra4 Bd6; 14...Qd6 15.Rc1 Qb4 16.Qa2 b6 17.Rc2 g6 18.Nb1 Re8 19.Ba3 Qa4) 15.Ba3 Ba3 16.Qa3 Bd7 17.Ne5 Rc8 18.Rc1 Ne4 19.Na2 Qd6.

8.Nc3 Bd7

9.cd5 cd5 10.Be2 ab5 11.ab5 Ra1 12.Qa1+–.

9.cd5 cd5 10.Be2 b6 11.0–0 Bc8+–.

9.cd5 cd5 10.Be2 b6 11.Ne5 Be8 (11...Bc8 12.0–0+=) 12.0–0+– Bd6 (12...ab5 13.ab5 Ra1 14.Qa1+–) 13.f4 Be5? (better 13...h6!?+–) 14.fe5+– Nfd7 15.Ba3 Ne5 16.Bf8 (16.Qb1 f6 17.Bf8 Bg6+–) 16...Kf8 17.d4 Ng6 18.Bd3 ab5 19.ab5 Ra1 20.Qa1 Kg8 (20...Qe7 21.Rf2+–) 21.Bg6 (21.Qa8!? f5+–) 21...hg6 22.Rf2 (22.Qa3 Nd7+–) 22...Nd7+– 23.Ra2 Qg5 24.Qe1 Nf6? (better 24...Qd8!?+–) 25.Ra8+– Kf8 26.h3 Ne4?? (26...e5 27.Qd2 Qg3+–) 27.Ne4 de4 (27...Qe7 28.Nc3 Qc7 29.Qa1+–) 28.Qc3 f5 (28...Kg8 29.Re8 Kh7 30.Qe1+–) 29.Qc6 Qe7 (29...Qe3 30.Kh1 Qc1 31.Qc1 Ke7 32.Qc8 f4 33.Qe8 Kf6 34.Qf8 Kg5 35.Qe7 Kf5 36.Rf8) 30.Qb6 Qb4 (30...f4 31.Qc5 Qc5 32.dc5 Kf7 33.Re8 Ke8 34.ef4 e3+–) 31.Qc6 Qe1 32.Kh2 Qe3 (32...Qh1 33.Kh1 Kf7 34.Qe8 Kf6 35.Qd8 Kf7 36.Ra7) 33.Qe8 1–0. GuestVDQH – PaulFang, freechess.org, 2019.

9.Ne5 ab5 10.ab5 Ra1 11.Qa1 cb5 12.cb5 Bd6 13.d4 Qc7 14.Bd3 Be8 (14...Rc8 15.0–0= (worse 15.Nd7 Nbd7 16.h3 Nb6=+)) 15.0–0 Nfd7 (15...Nbd7 16.Rc1 Qb8 17.Nf3+–) 16.Nf3 Nf6 17.Rc1 Ng4? (better 17...Qe7+=) 18.h3+– Nh2 (18...Nf6 19.e4 de4 20.Ne4+–) 19.Ng5 g6 (19...Kh8 20.Nce4 (worse 20.Nh7 Rg8+–; 20.Bh7?! Qe7 21.f4 f6+–) 20...de4 21.Rc7 Bc7 22.Ne4+–) 20.Nce4 Qd7 (20...Qe7 21.Nd6 Qg5 22.Kh2 Bd7+–) 21.Nf6 (21.Nf6 Kg7 22.Nd7 Bd7 23.Ba3 Ba3 24.Qa3+–) 1–0. GuestPDKZ – GuestZZDL, freechess.org, 2017.

9.Ne5 ab5 10.ab5 Ra1 11.Qa1 dc4 12.Bc4 cb5 13.Nd7 (worse 13.Bb5 Bb5 14.Nb5 Qd5–+) 13...Nbd7 14.Nb5 (14.Bb5 Qc7=) 14...Bb4 (14...Nb6 15.Be2=+) 15.Nc3 (15.0–0 Nb6 16.Bf6 Qf6 17.Qf6 gf6=) 15...Qc7 (15...Ne5 16.Bb5=+) 16.Be2= Qd6 17.Bf3 (17.d4 Rb8=) 17...b6 (17...Nc5 18.d4 Nd3 19.Ke2 Nb2 20.Qb2=+) 18.Qc1 (18.d4!?=) 18...Ne5 19.0–0 1–0. GuestRVYW – PaulFang, freechess.org, 2017.

9.Ne5 cb5 10.ab5 a5 11.Be2 dc4 12.Bc4 (12.Nc4 Qc7=) 12...b6 (12...Qc7 13.f4=) 13.0–0 Qc7 14.Qf3 (14.d4 Bd6+=) 14...Ra7 (14...Qe5 15.Qa8 Qc7 16.d3=+) 15.Nd7 (15.d4 Bd6+–) 15...Nbd7= 16.Be2 Ne5 17.Qg3 Bd6 (17...Nc4 18.Bc4 Qc4 19.Rfb1=) 18.Qh3 (18.f4 Ng6+=) 18...Ng6 (18...Nc4 19.Bc1=) 19.Rfc1+= Qe7 20.e4 (20.Na4 Nd5+=) 20...Nf4 21.Qf3 Ne2 22.Qe2 Bc5 (22...Nd7 23.Na4=) 23.e5 (23.Na4 Nd7+=) 23...Nd5 (23...Nd7 24.Na4+=) 24.Nd5 ed5 25.d4 Bb4 26.Rc6 Rb8 (26...a4 27.Qf3+=) 27.Rac1 (27.Qf3 Qd7+–) 27...Qd7+= 28.h3 (28.Qc2 Raa8+=) 28...g6 (28...a4!?=) 29.Qf3+– a4 30.Ba3 Ba3 31.Qa3 Qf5 (31...Raa8 32.Ra1+–) 32.Qd6 Rab7 33.Qd5 a3 (33...Rd7 34.Qc4 Rbd8 35.Rd1+– (35.Rb6?! Rd4 36.Qc5 Re4=)) 34.Qa2 (34.Rf6 Qd7 35.Rd6 Qe8+–) 34...Qd3 35.Rc8 (35.e6 Rd8+–) 35...Rc8+– 36.Rc8 Kg7 37.e6 (better 37.Qd5 a2 38.Ra8 Qd1 39.Kh2+=) 37...Qd4? (37...Ra7 38.ef7 Rf7+–) 38.ef7?? (better 38.Qa3 Qd1 39.Kh2+–) 38...Rf7= 39.Qa3 (39.Ra8!? Qb2 40.Ra3 Rf2 41.Ra7 Kh6 42.Qd5=) 39...Qf2 40.Kh2 Qf4 41.Qg3 (41.Kh1!?=) 41...Qg3–/+ 42.Kg3 Rf5 43.Rc7 Kh6 44.Kg4 Rb5 45.Rb7 Rb4 46.Kf3 b5 (46...g5 47.g4–/+) 47.g4 Rb3 (47...Kg5 48.Rh7 Rb3 49.Kg2=+) 48.Kg2 (48.Kf4 g5 49.Ke4 Rh3 50.Rb5 Rh1=) 48...b4 (48...Rb1 49.h4=+) 49.h4=+ g5 50.hg5? (better 50.h5=+) 50...Kg5–+ 51.Rh7 Kg4 52.Rg7 (52.Kf2 Kf5–+) 52...Kf4 53.Rf7 (53.Kf2 Rb2 54.Ke1 Ke3–+) 53...Ke4 54.Re7 Kd3 55.Kf2 (55.Rb7 Rb1–+) 55...Kc2 (55...Rc3 56.Re3 Kd2 57.Re2 Kc1 58.Re1 Kc2 59.Re2 Kb1 60.Re1 Kb2 61.Rd1–+) 56.Re2 Kb1 57.Re1 Ka2 58.Re2 (58.Re4–+) 58…Rb2 0–1. GuestSHSP – GuestXDGUK, freechess.org, 2017.

9.Ne5 Qc7 10.f4 Rd8 (10...Be8 11.Be2=) 11.Be2 (11.cd5 ab5 (worse 11...Nd5 12.Nd5 ed5 13.Bd3+–) 12.Nd7 Qd7 13.dc6 Nc6 14.Bb5 Bb4+=) 11...Bd6 (11...ab5!? 12.ab5 Ra1 13.Qa1 dc4 14.Bc4 cb5 15.Nb5 Bb5 16.Bb5 Bb4=) 12.0–0+– Be5 (12...ab5 13.ab5 (13.Nd7?! Nbd7 14.ab5 Ra1 15.Qa1 d4=) 13...Ra1 14.Qa1 dc4 15.b6 (worse 15.Nc4 cb5 16.Nd6 Qd6=) 15...Qb6 16.Nc4+–) 13.b6 (worse 13.fe5 Qe5 14.Qc2 dc4+=) 13...Qb6 14.fe5 Qb2 (14...Ne4!? 15.Rb1 Qc7+–) 15.ef6+– g6 (15...d4 16.ed4 Bc8 17.Rb1+–) 16.Rb1 (16.Qe1 Qb4 17.Rb1 Qf8 18.Rb7 a5+–) 16...Qa3 17.Rb7 dc4 (17...Be8 18.Rb3 Qf8 19.Qe1+–) 18.Qe1 (18.Bc4 Be8 19.Re7 Nd7+–) 18...Qf8 19.Ne4 c5 20.Qh4 Bc6?? (better 20...Nc6 21.Bc4 h6+–) 21.Ng5 h5 22.Bh5! Qh6 (22...gh5 23.Qh5 Combination) 23.Nf7 Qh5 24.Nd8 Qh4 (24...Be8 25.Rg7 Kh8 26.f7 Kg7 27.Ne6 Kh6 28.f8Q Kh7 29.Qg7) 25.f7 Kf8 (25...Kh7 26.f8Q Bb7 27.Rf7) 26.Ne6 1–0. GuestBJQR – GuestCVVP, freechess.org, 2020.

9.Ne5 Bd6 10.Nd7 (10.f4 Qc7=) 10...Nbd7 (10...Qd7 11.Qf3=) 11.Be2 (11.d4 ab5 12.ab5 Ra1 13.Qa1 e5=) 11...e5 (11...dc4 12.bc6 Ne5 13.cb7=) 12.cd5= cd5 13.0–0 (13.d4 ab5 14.Bb5 ed4 15.Qd4 Be5=) 13...d4 14.ed4 (14.Na2 ab5 15.Bb5 Qb8=) 14...ed4 15.Na2 Bc5 (15...Qb6 16.Re1=) 16.Nc1 Ne5 (16...ab5!? 17.Bb5 Qb6=) 17.Nb3+– Ba7 (17...b6 18.ba6 Qd5 19.Rc1+–) 18.ba6 ba6 19.Ba6 Ng6 (19...Qd6 20.Bb5 Nfg4 21.f4 d3 22.Kh1 Nh2 23.Kh2 (23.fe5?? Qh6 24.g3 Qh3–+; 23.Be5 Qh6 24.Bg7 Kg7 25.g3 Nf1 26.Kg2 Qh2 27.Kf3 Qh1 28.Kg4 f5 29.Kg5 h6) 23...Qh6 24.Kg3 Qg6 25.Kh4 Qf6 26.Kh3 Qh6 27.Kg3 Qg6 28.Kh3 Qh6 29.Kg3=) 20.d3 Rb8 (20...Qd6 21.Bb5 Rfb8 22.Re1+–) 21.Bb5+– Qd5 22.Bc4 Qf5 (22...Qb7 23.Qd2+– (23.Bd4 Nf4 24.Qf3 Qf3 25.gf3 Ne2 26.Kg2 Nd4 27.Nd4 Bd4–/+)) 23.Bd4 Bd4 24.Nd4 Qg5 (24...Qc5 25.Nb3 Qd6 26.a5+–) 25.Nf3 (25.Qf3 Rfe8+–) 25...Qh5 (25...Qf5 26.Re1+–) 26.Qd2 h6 (26...Nh4 27.Nh4 Qh4 28.a5+–) 27.a5 Ng4 (27...Nd5 28.Bd5 Qd5 29.d4+–) 28.h3 (28.d4 Rfd8 29.Be2 Ra8+–) 28...N4e5 29.Ne5 Ne5 30.a6 (30.Rfe1 Nc4 31.dc4 Qc5+–) 30...Ra8 (30...Nc4 31.dc4 Ra8 32.Rfd1+–) 31.Qe3 (31.Qa5 Qe2 32.Bd5 Rae8+–) 31...Rfe8 (31...Nc4 32.dc4 Rfe8+–) 32.Rfe1 Nc4 (32...Qf5+–) 33.Qe8 Re8 34.Re8 Kh7 35.dc4 1–0. GuestXGLL – GuestTQKH, freechess.org, 2018.

9.cd5 ed5

10.d4 Bb4 11.bc6 (11.Qb3 Qa5 12.Bd3 Ne4 13.Be4 de4 14.Nd2 Be6 15.Qc2 ab5 16.0–0 Bc3 17.Bc3 b4–/+) 11...Nc6 (11...Bc6 12.Qb3 Qa5 13.Bd3 Ne4 14.Be4 de4 15.Nd2 Bc3 16.Qc3 Qg5 17.0–0 Nd7=) 12.Rc1 Ne4 13.Bd3 Nc3 14.Bc3 Qa5 15.Bd2 Bd2 16.Qd2 Qa4 17.0–0 Rfc8=+.

10.d4 ab5 11.ab5 Ra1 (11...Ra5 12.bc6 Nc6 13.Bd3 Ra1 14.Ba1 Nb4 15.0–0 Nd3 16.Qd3 Qc7 17.Ne5 Ra8=) 12.Qa1 Qb6 (12...cb5 13.Bb5 Bb5 14.Nb5 Qb6 15.Nc3 Qe6 16.0–0 Nc6 17.Qa4 Rb8=) 13.Bd3 (13.bc6 Nc6 14.Be2 Rc8 15.0–0 Bf5 16.Ne5 Qb4 17.Rc1 Na5=) 13...cb5 14.0–0 Na6 (14...b4 15.Na4 Qa5 (15...Qa7 16.Nc5 Qa1 17.Ra1 Bc5 18.dc5=+) 16.Nc5 Qa1 17.Ra1 Bc5=+) 15.Ne5 Nc7 (15...Bc6 16.Rc1 Bd6 17.Nd1 Ra8=) 16.Nd7 Nd7 17.Qa2 (17.Rc1 Nf6=) 17...Nf6 (17...Ra8=) 18.Qb3 b4 19.Ra1 Qd6 20.Nb5 (20.Ne2 Ng4 21.Ng3 Bh4=) 20...Nb5=+ 21.Bb5 Qb6 (21...Ng4!? 22.f4 Nf6=+) 22.Be2 Rc8 23.Ba3 (23.Bd3 Qe6=) 23...Ra8 (23...Ne4 A) 24.Qd5? Nc3 (24...ba3?! 25.Qe4 Qb2 26.Rf1–/+) 25.Qh5 Ne2 26.Qe2 ba3–+; B) 24.Bb2 Qe6 25.Bd3=+) 24.Bb2 Ra1 25.Ba1 Qc6 26.Bb2 Ne4 27.Bf3 (better 27.Bd3!?=+) 27...Nd2–/+ 28.Qd5?? (better 28.Qd3 Nf3 29.gf3–/+) 28...Qa6–+ (28...Nf3?! 29.Qf3 Qc2 30.g3–+) 29.Qb7 (29.h3 Qf1 30.Kh2 Qf2 31.Bh5 Nf1 32.Kh1 Ne3 33.Qf7 Qf7 34.Bf7 Kf7 35.g4–+) 29…Qf1 0–1. Trkn – jxjames, itsyourturn.com, 2000.

10.d4 Ne4 A) 11.bc6 Nc6 (11...Bc6 12.Nd2 Qa5 13.Nde4 de4 14.Bc4 Nd7 15.0–0 Bb4 16.Qb3 Nb6 17.Bb5 Rfe8=) 12.Nd2 Nc3 13.Bc3 Bf5 14.Qf3 Qd7 15.Be2 Rac8 16.0–0 Nb4 17.Bb4 Bb4=+; B) 11.Ne4 de4 12.Nd2 Qa5 13.Bc4 Bb4 14.ba6 Na6 15.Ba3 Ba3 16.Ra3 b5 17.Be2 Rfe8=+.

10.Be2 Qb6 11.a5 Qd8 12.b6 Bf5 (12...c5 13.0–0=) 13.0–0 Nbd7 (13...Re8 14.d3=) 14.Nh4 (14.d3 Bd6=) 14...Bg6 (14...Be6 15.Qc2=) 15.Ng6+= fg6 16.d4 Re8 (16...Bb4 17.Qb3 Qe7 18.Ra4+=) 17.Qb3 Bd6 18.Bd3 Kh8 19.h3 (19.Ba3 Qe7+=) 19...Nf8 (19...Rc8 20.Ba3 Ba3 21.Qa3+=) 20.Rac1 (20.Ba3 Rc8+=) 20...Ne6 (20...Qe7 21.Ne2+=) 21.Qd1 (21.Ba3 Rc8+=) 21...Ng5 (21...Qe7 22.Qa4=) 22.Qb3 (22.Na4 Ne6+=) 22...Qe7 (22...Ne6 23.Ba3+=) 23.Rc2 Nge4 24.Ne4 Ne4 25.Be4 Qe4 26.Rc3 g5 27.Ba3 Bb8 (27...Ba3 28.f3 Qh4 29.Qa3=) 28.Qd1 Re6 (28...Qf5 29.Bc5+=) 29.Qh5 Rg6 30.f3 (30.Bc5 Qe6+=) 30...Qe6 31.Qg4 Qe8 (31...Qg4 32.fg4 Bd6 33.Bd6 Rd6 34.Rf7+=) 32.Re1+– Qd8 (32...Bf4 33.g3+–) 33.Bc5 Bd6 34.Rd1 (34.e4 Bc5 35.Rc5 Qe7+–) 34...Qe7 35.e4 Rf8 (35...Bc5 36.Rc5 Rd6 37.e5+=) 36.e5 (36.ed5!? Rf4 37.Qg3+–) 36...Bc5+= 37.Rc5 (worse 37.dc5 Re6–/+) 37...h6 (37...Re6 38.Rc2=) 38.Qg3 Rf4 (38...Re6 39.Re1+=) 39.Qf2 h5 (39...Re6 40.Re1+=) 40.Qe3 Rf8 (40...Re6 41.Re1+=) 41.Rf1 (41.Re1 Re6+=) 41...Rf4 (41...Re6 42.Qf2+=) 42.Qd3 (42.Re1 Re6+=) 42...Qf7 (42...Re6 43.Re1+=) 43.g3 (43.Rcc1 Re6+=) 43...Rf5 44.Rcc1 (44.Rc2 h4+=) 44...Re6 (44...h4 45.g4 Rf4 46.Kg2=) 45.Rc3 h4 46.g4 (46.f4 hg3 (worse 46...gf4 47.g4 Rg6 48.Kh2+–) 47.fg5 Rf2=) 46...Rf4 47.Rc5 Qg6 (47...Kg8 48.Kf2=) 48.Qe3 Qf7 49.Rf2 Qe7 50.Kg2 (50.Re2 Kg8=) 50...g6 (50...Kg8 51.Qc3=) 51.Kg1 (51.Qd3 Kg8=) 51...Kg7 52.Rh2 Kh7 53.Rf2 Kg7 54.Rf1 Kh7 55.Kg2 (55.Re1 Qf7 56.Kg2 Re7=) 55...Kg7 (55...Qf7 56.Re1=) 56.Rd1 Kh7 57.Rd3 Kg7 58.Rd1 Kh7 59.Kg1 Qf8 60.Rf1 Qf7 61.Qf2 Qe7 62.Kg2 Rf8 (62...Qf8 63.Qe3=) 63.Rg1 Qf7 64.Qe3 Qf4 (64...Qe7!?=) 65.Qf4+= gf4 (65...Rf4 66.Rd1+=) 66.g5+– Kg7 (better 66...Kg8!?+–) 67.Kf2+– Rf5 (67...Ree8 68.Rg4+–) 68.Rg4 Re8 (68...Kf8 69.Rh4 Re7 70.Rc1+–) 69.Rh4 Rh8 (69...Re6 70.Rg4+–) 70.Rh8 Kh8 71.h4 Kg7 72.Rc1 1–0. DEFFM – GuestHXYS, freechess.org, 2018.

10.Be2 c5 A) 11.0–0 Bf5 (11...Bg4 12.Qc2 Re8 13.Ng5 Be2 14.Ne2 h6 15.Nf3 Nbd7 16.Nc3 Nf8 17.d3 Ne6=) 12.d3 Re8 13.Qc2 b6 14.Rfb1 Ra7 15.ba6 Na6 16.Nb5 Nb4 17.Qd2 Ra6=; B) 11.Qc2 Re8 (11...ab5 12.ab5 Ra1 13.Ba1 Be6 14.0–0 Qd7 15.Na4 c4 16.Nd4 Qd6 17.d3 cd3+=) 12.0–0 Bg4 13.Rfc1 Bd6 14.h3 Bh5 15.d3 Bg6 16.Nh4 d4 17.Nd1 Bh5=.

10.Be2 Re8= A) 11.Qc2 Qc7 (11...ab5 12.ab5 Ra1 13.Ba1 Qa5 14.Qb2 Bd6 15.0–0 Be6 16.bc6 bc6 17.Qc2 Bg4=) 12.0–0 Bd6 13.Rfc1 Bg4 14.h3 Bh5 15.d3 Qe7 16.bc6 Nc6 17.Rab1 Rac8=; B) 11.0–0 c5 (11...ab5 12.ab5 Ra1 13.Qa1 Bf5 14.Qa7 Qc8 15.Rc1 Nbd7 16.bc6 bc6 17.Na4 Bg4=) 12.Qc2 Bd6 13.Rfb1 Bg4 14.h3 Bd7 15.Ba3 Qc8 16.d4 Bf5 17.Bd3 Bd3=.

10.Be2 Bf5 A) 11.0–0 Re8 (11...c5 12.d3 Re8 13.Qc2 Bd6 14.Rfe1 Be6 15.d4 c4 16.Ng5 Qc7 17.h3 Qd7=) 12.d3 c5 13.Qc2 b6 14.Rfe1 Bg4 15.d4 c4 16.Ne5 Be2 17.Qe2 Bb4=; B) 11.d3 c5 (11...Re8 12.0–0 c5 13.Qc2 b6 14.Rfb1 Ra7 15.ba6 Na6 16.Nb5 Nb4 17.Qd2 Ra6=) 12.0–0 Re8 13.Qc2 b6 14.Rfc1 Bd6 15.Rab1 Bg6 16.Nh4 d4 17.Nd1 Bh5=.

8.Nc3 Nbd7

9.d4 Qa5 10.Nd2=.

9.d4 ab5 10.ab5 Ra1 11.Qa1 Bb4 12.Bd3 dc4 13.Bc4 Nb6 (13...cb5 14.Bb5 b6 15.0–0=) 14.Be2 Bd7 15.bc6 Bc6 16.0–0 Nbd7 (16...Qd6 17.Ne5=) 17.Rd1 (17.Ba3 Ba3 18.Qa3 Re8+=) 17...Qc7 18.h3 (18.Rc1 Qb6=) 18...Rc8 19.Rc1 Qb8 (19...Qd8 20.Qb1=) 20.Qb1 h6 ½–½. Berlacki,Piotr – Peters,M, Wch Seniors Bad Woerishofen, 1992.

9.d4 dc4 10.Bc4 Nb6 11.Be2 ab5 12.ab5 Ra1 13.Qa1 Bd7 14.Ne5 cb5 15.Nd7 Qd7 16.Bb5 Qc7 17.0–0 Ra8 18.Qb1.

9.d4 dc4 10.Bc4 Nb6 11.Be2 c5 A) 12.dc5 Bc5 13.Qc2 (13.ba6 Qd1 14.Rd1 ba6 15.Ne5 Bb7 16.0–0 Rfd8 17.a5 Nbd5 18.Nd5; 13.0–0 ab5 14.Qd8 Rd8 15.ab5 Bd7 16.Ne5 Be8 17.Rfd1 Rd1 18.Rd1; 13.Qd8 Rd8 14.0–0 ab5 15.ab5 Bd7 16.Rfd1 Nbd5 17.Ra8 Ra8 18.Bc4) 13...ab5 14.Bb5 Qc7 15.0–0 Rd8 16.Rfc1 Bd6 17.Qb3 Qe7 18.Be2; B) 12.0–0 cd4 13.Nd4 e5 14.Nf3 e4 15.Nd4 ab5 16.ab5 Ra1 17.Qa1 Bd6 18.Rc1.

9.d4 dc4 10.Bc4 Nb6 11.Be2 Qc7 A) 12.bc6 A1) 12...Nbd5 13.0–0 (13.Nd5 Nd5 14.0–0 bc6 15.Qc2 Rb8 16.Rab1 Nb4 17.Qd2 Rd8 18.Bc3) 13...bc6 14.Ne5 Rb8 15.Rb1 Nd7 16.Nd5 ed5 17.Nf3 Nf6 18.Qc2; A2) 12...bc6 13.0–0 (13.Rc1 Rb8 14.Qc2 c5 15.0–0 Bb7 16.a5 Nbd7 17.Rfd1 h6 18.dc5) 13...c5 14.a5 Nbd7 15.d5 Qb7 16.d6 Bd6 17.Qd6 Qb2 18.Qd3; B) 12.0–0 B1) 12...Nbd5 13.bc6 (13.Qb3 Bd6 14.Ne5 ab5 15.ab5 Bd7 16.Nd5 Nd5 17.Nd7 Qd7 18.g3; 13.Qd3 Nc3 14.Bc3 Bd7 15.Ne5 cb5 16.Nd7 Qd7 17.ab5 ab5 18.Qb5; 13.Nd5 Nd5 14.bc6 bc6 15.Rb1 Rb8 16.Qc2 f6 17.Bd3 h6 18.Bc4; 13.Qc2 Nc3 14.Bc3 ab5 15.ab5 Bd7 16.bc6 Bc6 17.Ne5 Bd5 18.Qb2) 13...bc6 14.Nd5 Nd5 15.Rb1 Rb8 16.Qc2 f6 17.e4 Nb4 18.Qd2; B2) 12...ab5 13.ab5 Ra1 14.Qa1 Bd7 15.bc6 bc6 16.Rc1 Rb8 17.Ne5 Nbd5 18.Nd5; C) 12.ba6 C1) 12...ba6 13.0–0 (13.Qd3 c5 14.0–0 Bb7 15.a5 Nbd7 16.Ba3 Rfd8 17.Qc4 Bd6 18.Rfc1; 13.Qc2 c5 14.0–0 cd4 15.Nd4 Bd6 16.h4 e5 17.a5 Nc4 18.Ncb5; 13.Rb1 c5 14.a5 Nbd7 15.0–0 Bb7 16.Qd2 Rab8 17.Rfc1 Rfc8 18.Ra1) 13...c5 14.dc5 Bc5 15.Rc1 Bb7 16.a5 Nbd7 17.Na4 Rac8 18.Nc5; C2) 12...Nbd5 13.Ne5 b6 14.Qc1 Bb4 15.0–0 Bc3 16.Bc3 Ba6 17.Ba6 Ra6 18.Bb2.

9.d4 dc4 10.Bc4 Nb6 11.Be2 Nbd5 12.0–0 ab5 (12...Nc3 13.Bc3 Nd5 14.Qd2 Nc3 15.Qc3 cb5 16.ab5 a5 17.Qb3 f6 18.Rfc1; 12...c5 13.dc5 (13.Nd5 Nd5 14.dc5 Bc5 15.Qc2 Qe7 16.Rfd1 Bd7 17.Ne5 Rfc8 18.ba6; 13.ba6 ba6 14.Nd5 Nd5 15.Rb1 cd4 16.Bd4 Bd7 17.e4 Nf4 18.Bc4) 13...Bc5 14.Nd5 Nd5 15.Qc2 Qe7 16.Rfd1 ab5 17.Bb5 f6 18.g3; 12...Qc7 13.Qb3 (13.Nd5 Nd5 14.bc6 bc6 15.Qc2 Rb8 16.Rfb1 Nb4 17.Qd2 Rd8 18.Bc3; 13.Qc2 Nc3 14.Bc3 Nd5 15.Bd2 ab5 16.ab5 Ra1 17.Ra1 cb5 18.Qc7; 13.bc6 bc6 14.Qc2 Nb4 15.Qd2 c5 16.Ba3 cd4 17.ed4 Rb8 18.Rab1) 13...Bd6 14.Ne5 ab5 15.ab5 Bd7 16.Nd5 Nd5 17.Nd7 Qd7 18.g3; 12...cb5 13.ab5 Nc3 14.Bc3 Ne4 15.Bb2 Qd5 16.Ne5 f6 17.Bc4 Qd6 18.Qg4; 12...g6 13.Qb3 (13.bc6 bc6 14.Ne5 Bb7 15.Rb1 c5 16.Nd5 Bd5 17.f3 Nd7 18.e4; 13.ba6 ba6 14.Ne5 Bb7 15.Qc2 Nb4 16.Qb3 c5 17.Rfd1 Qc7 18.Qc4) 13...Bd7 14.Ne5 ab5 15.ab5 Qc7 16.h3 c5 17.Nd5 Nd5 18.Ra8; 12...Bd7 13.ba6 ba6 14.Ne5 Qa5 15.Qc2 Rab8 16.Ne4 Qc7 17.Nc5 Nb4 18.Qc4) 13.ab5 Bd7 (13...Ra1 14.Qa1 Bd7 15.bc6 bc6 16.Ne5 Qc7 17.Nd5 Nd5 18.e4) 14.Qb3 (14.Ra8 Qa8 15.Ne5 Bd6 16.Nd7 Nd7 17.Qb3 Qb8 18.g3) 14...Nc3 (14...Qc7 15.Ne5 Bd6 16.Nd5 Nd5 17.Nd7 Qd7 18.g3) 15.Bc3 Nd5 (15...Qc7 16.b6 Qd6 17.Ra7 Ne4 18.Rfa1) 16.Bb2 (16.Ra8 Qa8 17.Ne5 Nc3 18.Qc3) 16...Qb6 (16...cb5 17.Ra8 Qa8 18.Ne5) 17.Ne5 Nf6 (17...Ra1 18.Ra1) 18.Nd7 (18.Bc4+– 1.00/10) 18...Nd7 19.Bc4 cb5 20.Qb5 Qb5 21.Bb5 Nb6 ½–½. Glaeser,Hartmut (1675) – Schirmer,Werner (2030), Halle GER, 2011.

9.d4 dc4 10.Bc4 Nb6 11.Be2 Nbd5 12.bc6 A) 12...bc6 13.Ne5 Qc7 14.0–0 Nd7 15.Nd5 ed5 16.Nf3 Rb8 17.Rb1 Nf6 18.Qc2; B) 12...Qc7 13.0–0 (13.Nd5 Nd5 14.0–0 bc6 15.Qc2 Rb8 16.Rab1 Nb4 17.Qd2 Bb7 18.e4) 13...bc6 14.Nd5 Nd5 15.Rb1 Rb8 16.Bc4 c5 17.dc5 Qc5 18.Qd4; C) 12...Qa5 13.Qc2 bc6 14.Ne5 Nb4 15.Qd2 Rd8 16.f4 c5 17.Bf3 Rb8 18.Rc1; D) 12...Nc3 13.Bc3 Qc7 14.0–0 bc6 15.Ne5 Bb7 16.Bf3 Nd5 17.Qd2 a5 18.Rab1; E) 12...Qb6 13.0–0 Ne3 14.fe3 Qb2 15.Qd3 Qb6 16.Ne5 bc6 17.Bf3 Bd7 18.Rac1.

9.Be2 Nc5 10.d4 Nce4 11.c5 Qa5 12.Qb3+= Nc3 13.Bc3 (worse 13.Qc3 Qc3 14.Bc3 Ne4=) 13...Qc7 14.0–0 Bd7 (14...Ne4 15.b6 Qd8 16.Ba5+=) 15.Ne5 Ne4 16.Bb2 (16.b6 Qd8+–) 16...cb5 (16...Nd2 17.b6 Qd8 18.Qc2 Nf1 19.Rf1–/+) 17.ab5 (17.Nd7 Qd7 18.Rfd1 ba4 19.Ra4 Ng5+=) 17...Bb5 (17...Nd2 18.b6 Qc8=+ (18...Nb3? 19.bc7 Bb5 20.Bb5 ab5 21.Ra8 Ra8 22.Ba3+–)) 18.Bb5+= ab5 19.Qb5 f6 (better 19...Bg5!?=) 20.Nd7+– Rfe8 (20...Rfd8 21.Nb6 Ra1 22.Ra1+–) 21.Nb6+– Rad8 22.f3 Ng5 23.h4 (23.Ra7 f5+–) 23...Nf7+– 24.Ra7 f5 25.g3?? (better 25.h5+–) 25...Qg3–+ 26.Kh1 Qh4 27.Kg2 Ng5?? (better 27...Qg5 28.Kf2 f4 29.ef4 Qf4–+) 28.Rh1+– Nh3 29.Rh3 Qe1? (better 29...Qg5 30.Kf1 f4 31.ef4 Qf5+–) 30.Ra3 (better 30.Qd3!? Bh4 31.Qc2 g5 32.Rb7 Rf8+–) 30...Bg5? (better 30...Bh4!? 31.Ra1 Qd2 32.Kh1 Qe3+–) 31.f4+– Qd2 32.Kf1?? (better 32.Kf3 Qd1 33.Qe2 Qe2 34.Ke2+–) 32...Qd1+= 33.Kf2 Qd2? (better 33...Qg4 34.Qf1 Bh4 35.Rh4 Qh4 36.Ke2 Re7+=) 34.Qe2+– Qe2 35.Ke2 Bf6 36.Ra1 h6 (36...Re7 37.Bc3+–) 37.Rg1 Re7? (37...Kh7+–) 38.Rh6 Rf7 39.Rhg6 Ra8 (39...Rff8+–) 40.Na8 Kf8 41.Nb6 Ke7 (41...Rc7 42.Kf3+–) 42.R6g2 1–0. GuestYZBW – GuestLRHW, freechess.org, 2019.

9.Be2 e5 10.0–0 e4 11.Nd4 c5 12.Nf5 Nb6 13.Ne7 Qe7 14.a5 (14.ba6 ba6 (worse 14...Nc4 15.Nd5 Nd5 16.Bc4+–) 15.cd5 Nbd5=) 14...Nc4 15.Nd5 Nd5 16.Bc4 Be6 (16...Nb4 17.ba6 ba6 18.Qh5=) 17.ba6 (17.Qc2 ab5 18.Bb5 f5=) 17...ba6 (17...Ne3 18.fe3 Bc4 19.Qg4=+) 18.Qc2 Nb4 (18...f5!?=) 19.Qe4+– Rfe8 20.Qe5 (20.Rfd1 Rad8 21.Bc3 Qg5+=) 20...f6 (20...Qf8!? 21.Qc3 Rad8+–) 21.Be6 Qe6 22.Qc5 Rab8 23.Bc3 Nd3 24.Qd4 Red8 (24...Rbd8 25.Qh4+–) 25.Rab1 Rbc8 (25...Ra8 26.Rb6 Qc8 27.Qh4+–) 26.Rb6 Qf5 27.Qh4 Nc5 28.f3 1–0. DEFFM – GuestJXGS, freechess.org, 2018.

9.Be2 e5 10.0–0 Re8 11.d4 e4 12.Nd2 Bd6 (12...ab5 13.ab5 Ra1 14.Qa1=) 13.c5+= Bf8 (13...Bb8 14.Qc2=) 14.Qb3 (14.Qc2 Be7+=) 14...a5 (14...Be7 15.Rfb1+=) 15.Qc2 (15.Rad1 Rb8+=) 15...g6 (15...Re6 16.Rac1+=) 16.Ba3 (16.Rab1 Rb8+–) 16...Bh6 (16...Bg7 17.Rab1+=) 17.Rfe1 (17.Rab1 Bg7+–) 17...Nf8 18.h3 Ne6 (18...Bg7 19.Reb1+=) 19.Rab1 Ng5 (19...Bg7 20.Rb2+=) 20.bc6+– bc6 21.Rb6 Bd7 (21...Qc7 22.Bb2+=) 22.Reb1+– Nh5 (22...Bg7!?+–) 23.Bh5+– gh5 24.Qd1 (24.Nd5 Nh3 25.Kf1 Be6=) 24...h4+– 25.Qh5 (25.Bb2 Qf6+–) 25...Re6 (25...Bg7 26.Rb7+–) 26.Nd5! Rg6 (26...cd5 27.Re6 Combination) 27.Kh1 Kg7?? (better 27...cd5 28.Rg6 fg6 29.Qh6 Nf7+=) 28.Nf4+– Nh3 (28...Rf6 29.Qh4 Rf5 30.g4 Rf4 31.ef4+–) 29.Nh3 (worse 29.gh3 Bf4 30.ef4 Bh3+–) 29...Bh3 (29...Qe7 30.Rb7+–) 30.gh3 Qd7 31.Qe5 f6 (31...Kg8 32.Kh2 (32.Ne4?? Qh3 33.Qh2 Qf3 34.Qg2 Qg2) 32...f5 33.Rb7+–) 32.Rb7 (32.Rb7 fe5 33.Rd7 Kf6 34.Ne4 Ke6 35.Rbb7 ed4 36.Re7 Kf5 37.Nd6 Rd6 38.cd6+–) 1–0. GuestSKBJ – GuestWLSZ, freechess.org, 2018.

7.c4 cb5

8.ab5 a6 9.Nc3 Bd7 10.Be2 dc4 11.Bc4 Bb4 12.0–0 Bc3 (12...Qb6 13.Qb3 Be7 14.Na4+=) 13.Bc3+= Nd5 14.Qb3 Nc3 15.dc3 Qb6 16.Nd4 Bc8 (16...Rc8 17.Bd3+=) 17.Be2 Nd7 18.c4 (18.ba6!? Qb3 19.Nb3 ba6 20.Rfd1+=) 18...Nc5 19.Qc2 Bd7 (19...e5 20.Nb3=) 20.Rfb1 ab5 21.Ra8 Ra8 22.Nb5 Bb5 (22...Bc6 23.Nd4 Qc7 24.Nc6 Qc6 25.Bf3=) 23.Rb5 (23.cb5 Qd6=) 23...Qc7 24.Qb1 Ra5 (24...Ra6 25.Bf3=) 25.Rb6 (better 25.Qb4 Rb5 26.Qb5=) 25...Qb6?? (better 25...e5=) 26.Qb6+– Ra1 27.Bf1 (27.Bf1 Nd7 28.Qd4 Rf1 29.Kf1+–) 1–0. GuestWQLN – behaupten, freechess.org, 2017.

8.ab5 a6 9.Nc3 Nbd7 10.cd5 Nd5 11.Nd5 ed5 12.Qb3 Bf6 13.Nd4 Nb6 (13...Nc5 14.Qc2 Ne6 15.Ne6 fe6 16.ba6 ba6 17.Bf6 Qf6 18.d4=) 14.Bd3 (14.ba6 ba6 15.Rc1 Bd7+=) 14...Bd7 (14...Re8 15.0–0=) 15.0–0 (15.ba6 ba6 16.Ra6 (worse 16.Ba6 Na4–/+) 16...Ra6 17.Ba6+=) 15...h6 (15...Nc4 16.ba6 Nd2 17.Qb7 Nf1 18.Bf1 Qb8+=) 16.ba6+– ba6 17.Ra6 Ra6 18.Ba6 Be6 (18...Be5 19.f4 Bf6 20.Ba3+–) 19.Be2 (19.Rb1 Nd7+–) 19...Nd7 (19...Nc4 20.Ne6 fe6 21.Bf6 Rf6 22.Qc2+–) 20.Rc1 (20.Ba3 Re8 21.Ne6 fe6+–) 20...Qa8 (20...Qb6 21.Qc2+–) 21.Ne6 (21.Nc6 d4 22.Qb5 de3 23.de3 Qa2 24.Bf6 Nf6+–) 21...fe6 (21...Rb8 22.Bb5 fe6 23.Bf6 Nf6+–) 22.Bg4 (better 22.d4!?+–) 22...Rb8= 23.Be6 d5 becomes a target 23...Kh8 24.Qc2 (better 24.Qd5!? Qd5 25.Bd5 Bb2 26.Rd1+=) 24...Rb2–/+ 25.Qc8 (25.Qf5 Nb6 26.d4 Ra2=+) 25...Qc8 26.Rc8 Kh7 27.Bf5 (27.g3 Nb6 28.Rb8 d4–/+) 27...g6 28.Bd7?? (better 28.Bc2–/+) 28…Rb1 (28...Rb1 29.Rc1 Rc1) 0–1. GuestQJFT – PaulFang, freechess.org, 2017.

8.ab5 dc4 9.Bc4 Nbd7 10.0–0 b6 11.Be2 Bb7 12.d4 Nd5 13.Nc3 Bb4 14.Nd5+= Bd5 15.Rc1 Rc8 16.Qa4 Rc1 17.Rc1 Ba5 18.Ba3 Re8 19.h3 Nf6 20.Ne5 Ne4 21.Nc6 (21.Nc6 Qh4 22.g3 Ng3 23.Bg4–+). GuestLQTR – GuestSVCY, freechess.org, 2017.

8.ab5 dc4 9.Bc4 Nbd7 10.0–0 Nb6 11.Be2 Nbd5 12.Ne5 Bd6 13.f4 Be5 (13...a5 14.Nc4=) 14.Be5 (14.fe5 Nd7+=) 14...Nd7 (14...a5 15.Nc3+=) 15.Bb2 (15.Bd4 a6+–) 15...N7b6 16.Qb3 Bd7 (16...Qh4 17.Bd4+=) 17.e4+– Nf6 18.Nc3 (18.Qf3 Bc8+–) 18...Nc8 (18...Bc8 19.Qc2+=) 19.Rad1 (19.e5!? Qb6 20.Kh1+–) 19...Ne7 20.Ba3 Qb6 (20...Re8 21.d4+–) 21.d4 Rfe8 22.Na4 (22.Bc5 Qd8+–) 22...Qd8 23.Nc5 b6 (23...Bc8 24.f5 ef5 25.Bc4+–) 24.Nb7 Qb8 25.Nd6 White prepares the advance f5 25...a5 (25...Rf8 26.Bc4 Nc8 27.e5+–) 26.f5 (26.ba6 Rf8+–) 26...Rf8 (26...a4 27.Qa2 Rd8 28.Bc4 Ne4 29.Ne4 Nf5 30.Rf5 ef5 31.Ng5+–) 27.fe6 (27.Bc4 Kh8+–) 27...Be6 28.d5 Bg4 (28...a4 29.Qg3 Ne4 30.Ne4 (30.de6 Ng3 31.ef7 Kh8 32.hg3 Qc7–+) 30...Qg3 31.Ng3 Nd5 32.Bf8 Rf8 33.Rf3+–) 29.Bg4 Ng4 30.Qg3 Nh6 31.e5 Ra7 (31...Ng6 32.Kh1+–) 32.Qg5 (better 32.Bc1 Ng6 33.Bh6 gh6 34.Rf6+–) 32...Qc7 33.Ne4 Ng6? (better 33...Qb7+–) 34.Bf8 Kf8 (34...Nf8 35.Rc1 Qb8 36.Rc6+–) 35.d6 (35.e6 Qe7+–) 35...Qd7 36.Nf6! gf6 37.Qh6 Kg8 (37...Ke8 38.ef6 Kd8 39.Qh7 Nf8+–) 38.ef6 (38.ef6 Qd6 39.Qg7) 1–0. Biberger,Hans (1860) – Roth,Karlheinz, 2rd Bayern–ch Seniors, 2010.

8.ab5 dc4 9.Bc4 Nbd7 10.0–0 Nb6 11.Be2 Bd7 12.Ne5 Qc7 13.d4 Nfd5 14.Qb3 f6 15.Rc1 Qd8 16.Nd7 Qd7 17.e4 Nc7 The isolani on b5 becomes a target (17...Nf4 18.Bg4+=) 18.Nd2 f5 19.d5 ed5 20.Bg7 Kg7 21.Qg3 Kh8 22.Rc7 Qd6 Black intends f4 23.ed5 f4? (better 23...Qf6 24.Rcc1 Rfd8+=) 24.Qc3+– Bf6 25.Qc2 Nd7? (better 25...Bg7 26.Rb7 Qe5+–) 26.Ne4 (26.Ne4 Qe5 27.Rd1+–) 1–0. GuestTSTG – GuestHZLC, freechess.org, 2018.

8.ab5 dc4 9.Bc4 Nbd7 10.0–0 Nb6 11.Be2 Bd7 12.Ne5 Qc7 13.d4 Bd6 14.Nd2 Be5 (14...Nbd5 15.Qb3+=) 15.de5+– Nfd5 16.Rc1 Qd8 (16...Qb8 17.Bd4+–) 17.Ba3 Re8 18.Ne4 Nc8 19.Bd3 (19.Nc5 Qe7+–) 19...Qh4 (19...a6!? 20.ba6 ba6+–) 20.g3 (20.Nc5 Qd8+–) 20...Qh6 (20...Qd8!? 21.Nc5 Qa5+–) 21.Nc5+– Ncb6 22.e4 Ne3? (better 22...Ne7 23.Nb7 Reb8+–) 23.fe3 Qe3 24.Kg2 Bb5 (24...Reb8+–) 25.Rf3 (25.Rf3 Qg5 26.Bb5+–; worse 25.Bb5 Qa3 26.Be8 Re8+–) 1–0. DEFFM – GuestQLVF, freechess.org, 2018.

7.c4 Bd7

8.Qc2 b6 (8...a6 9.Ng5 g6 10.Na3=+) 9.Be2 c5 (9...a6 10.Ng5 g6 11.Nc3=) 10.Nc3 (10.Ng5 g6+=) 10...Bc8 11.Ne5 (11.cd5 ed5 12.0–0 Re8=) 11...Bb7 12.Bf3 (12.cd5 ed5 13.d4 Bd6=) 12...Nbd7 13.d4 Ne5 (13...cd4 14.ed4 Rc8 15.a5=) 14.de5= Nd7 15.Ne2 (15.0–0–0 Ne5 16.Nd5 Nf3 17.Nf6 Bf6 18.Rd8 Bd8 (worse 18...Rad8 19.Bf6 gf6 20.gf3+–) 19.gf3 Bc7+=) 15...Qc7=+ 16.cd5 (better 16.Qc3 d4 17.ed4 Bf3 18.gf3 cd4 19.Qd4=+) 16...Bd5 (16...Ne5 17.Be5 Qe5 18.Qc3 Qc3 19.Nc3=+) 17.Be4 (17.Bd5!? ed5 18.Nf4 Ne5 19.Nd5+=) 17...Be4= 18.Qe4 Rae8 (18...Rfd8 19.0–0=) 19.f4 (19.0–0 Rc8=) 19...f5 (better 19...Bh4!? 20.g3 Be7=+) 20.Qc4+= Bh4 21.g3 Qb7 (21...Bd8 22.0–0+=) 22.0–0–0 (22.0–0 Bd8+–) 22...Bd8+= 23.Nc3 Rf7 (23...Nb8 24.e4 a6 25.Kd2=) 24.e4 g6 (24...Bc7 25.ef5 Rf5 26.Ne4+=) 25.Rd6 (better 25.h4+–) 25...Rfe7? (better 25...Nf8+=) 26.Rhd1+– Qc8 27.ef5 gf5 28.Nd5 (28.Qd3!? Ne5 29.fe5 Bc7+–) 28...Rf7+– 29.Ne3 Nb8 30.g4 Bc7 (30...fg4 31.Ng4 Kf8 32.Kd2+–) 31.R6d2 (better 31.Nf5!? Kf8 32.Nh6 Bd6 33.Nf7+– (33.Rd6 Rd7 34.f5 Rd6 35.ed6 Qd7+–)) 31...fg4+– 32.Ng4 Ref8? (better 32...Kh8+–) 33.Nh6 Kh8 34.Nf7 Rf7 35.h4 (35.Rd6 Re7+–) 35...a6 (35...Re7 36.f5!+–) 36.h5 (36.Rd6!? Re7+–) 36...ab5 37.ab5 Qe8 38.h6 Nd7 (38...Rd7 39.Rd7 Nd7 40.f5+–) 39.f5! Re7 (39...Rf5 A deflection 40.Rd7) 40.fe6 (40.Qh4 Qd8 41.Rg1 Qf8 42.fe6 Re6 43.Rd7 Qe8 44.Rgg7 Rh6 45.Qh6 Qh5 46.Rh7 Kg8 47.Qg7) 40...Nf8 41.Qf4 Re6 42.Qg5 (better 42.Rf1 Kg8 43.Qc4+–) 42...Rg6 43.Qf5 (better 43.Qe3 Ne6 44.Rd7+–) 43...Rh6?? (better 43...Kg8+–) 44.e6+– Kg8 45.Rg2 Rg6 46.Qf6 Qe6 (46...Be5 47.Be5 Ne6 48.Rg6 hg6 49.Rh1 Qb5 50.Rh8) 47.Rg6 (47.Rg6 Ng6 48.Qg7) 1–0. Buczinski,Henryk – Dragon,Zygmunt, Chorzow Poland, 1966.

8.Nc3 a6 9.Be2 Ne8 10.0–0 dc4 A) 11.ba6 Na6 (11...b6 12.Bc4 Bc8 13.Qb3 Nd6 14.Be2 Ba6 15.d3 Nd7 16.Rfc1 Re8 17.Qc2 Bf6=) 12.Bc4 Nd6 13.Bd3 Nb4 14.Be2 c5 15.Ne5 Be8 16.Qb3 Nc6 17.Nf3 Na5=; B) 11.Bc4 ab5 12.ab5 Ra1 13.Qa1= Nd6 14.Be2 cb5 15.Rc1 b4 16.Nb1 f6 17.Qa2 Na6=.

8.Nc3 a6 9.Be2 Ne8 10.0–0 Bc8 11.cd5+= (11.d4 dc4 (11...Nf6 12.Qc2 cb5 13.ab5 dc4 14.Bc4 b6 15.e4 Bb7 16.Bd3 Nh5 17.d5 Nf4+–; 11...ab5 12.ab5 Ra1 13.Qa1 dc4 14.Bc4 Nd6 15.Bd3 cb5 16.Ba3 Bd7 17.Qb1 f5+=; 11...b6 12.cd5 ed5 13.Ne5 Be6 14.bc6 f6 15.Nd3 Bd6 16.e4 de4 17.Ne4 Bc7+–) 12.Bc4 ab5 13.ab5 Ra1 14.Qa1 Nd6 15.Bd3 cb5 16.Ba3 Bd7 17.Qb1 f5+=; 11.bc6 Nc6 12.cd5 ed5 13.Qc2 Be6 14.Rfc1 Rc8 15.d4 Nf6 16.Ba3 Rc7 17.Ng5 Ba3=) 11...cd5 (11...ed5 12.Qc2 Nf6 13.Rfc1 Re8 14.Ng5 h6 15.Nf3 c5 16.d4 c4 17.Ne5 Be6=) 12.Qb3 (12.Qc2 Nd6 13.d4 Nd7 14.Bd3 Nf6 15.Ne5 Bd7 16.ba6 ba6 17.Rfc1 a5+–) 12...Nd7 (12...b6 13.Rfc1 Nf6 14.d4 ab5 15.Nb5 Ne4 16.Ba3 Ba6 17.Rc2 Ba3+=) 13.d4 Nd6 14.Rfc1 Nb6 15.Nd2 (15.Ba3 Nbc4 16.Bd6 Nd6 17.Bd3 Kh8+=) 15...Nf5 (15...ab5 16.Nb5 Nb5 17.ab5+= (worse 17.Qb5 Bd7 18.Qd3 Ra4=+; 17.Bb5?! Bd7+=) 17...Bd7+=; 15...Nd7 16.Bd3 Nf6 17.Nf3 ab5+=) 16.a5+– Nd7 17.b6 Bg5 (17...Nf6+–) 18.Na4 Re8 19.Nf3 Nd6 20.Bd3 Nf5 (20...Be7!?+–) 21.Bf5+– ef5 22.Qd5 Ne5 23.Qd8 Nf3 (23...Bd8?? 24.Ne5 Be6 25.Nd3+–) 24.gf3 Rd8 (24...Bd8 25.Nc5+–) 25.f4 Be7 26.Ba3 Bh4 27.Rc7 g5? (27...Rb8+–) 28.Be7 Rd5 29.Nc5 (29.fg5 Ra5 30.Rac1 Ra4 31.Rc8 Rc8 32.Rc8 Kg7 33.Bf6 Kg6 34.Rg8 Kh5+–; 29.Bg5?! Bg5 30.Rac1 Be6 31.fg5 Ra5+–) 29...Rb8 (29...h6 30.Nb7 Bb7 31.Rb7+–) 30.Rc1 h6 (30...f6 31.Bf6 h6+–) 31.Na6! ba6 32.Rc8 Rc8 33.Rc8 Kg7 34.b7 (34.b7 Rb5 35.b8Q Rb8 36.Rb8+–) 1–0. De Visser,Arno – Keesman,Leo, 10th AKN Weekender, Haarlem NED (2), 2001.

8.Nc3 a6 9.Be2 Ne8 10.bc6 bc6 (10...Bc6 11.cd5 Bd5 12.Nd5 Qd5 13.Ne5 Bf6 14.d4 Nc7 15.Bf3 Qa5 16.Qd2 Qd2 17.Kd2 Be5+=) 11.d4 dc4+= 12.Rb1 c5 13.0–0 Qa5 14.Nd2 Nd6 15.d5 Bf6 16.Qc1 Ba4 17.Na4 Bb2=.

8.Nc3 a6 9.Be2 Ne8 10.cd5 A) 10...cd5 A1) 11.0–0 Qb6 (11...Qa5 12.Ne5 Nf6 13.Qb3 Rc8 14.ba6 b6 15.Ba3 Ba3 16.Ra3 Na6 17.d4 Nc7+=; 11...Nf6 12.Ne5 Bd6 13.f4 d4 14.ed4 Qb6 15.Nc4 Qd4 16.Kh1 Bc7 17.d3 Qc5+–; 11...Nd6 12.Qb3 Qa5 13.Ne5 Rc8 14.Ba3 Be8 15.Bg4 Qd8 16.Nd5 ed5 17.Bc8 Nc8=) 12.a5 Qd8 13.b6 Nc6 14.Qc2 Nf6 15.Rfc1 e5 16.d4 ed4 17.Nd4 Nd4=; A2) 11.Qc2 ab5 12.ab5 Ra1 13.Ba1 Nd6 14.0–0 Qb6 15.Bd3 f5 16.Na4 Qa5 17.Bc3 Qc7=; A3) 11.Qb3 ab5 12.ab5 Ra1 13.Ba1 Nd6 14.0–0 Qb6 15.Na4 Qc7 16.Be5 f6 17.Bf4 Rc8+=; B) 10...ed5 11.bc6 bc6 12.0–0 Bf5 13.d3 Nf6 14.Qc2 c5 15.e4 Be6 16.ed5 Nd5 17.Nd5 Bd5=.

8.Nc3 Bd6 9.d4=+.

8.Nc3 Re8 9.Qb3 (9.Be2 Qc7 10.Qb3 dc4 11.Qc4 Rc8+=) 9...h6 (9...a6 10.Bd3 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 cb5 14.Bb5 Bb5 15.Qb5=) 10.Be2+– Nh7 (10...Bc8!?+–) 11.0–0 Bf6 (11...Nf6 12.Ne5+–) 12.d4 Ng5 (12...Bc8!? 13.Ne5+–) 13.Ne5 g6 (13...a6+–) 14.f4 Nh7 (14...Ne4 A) 15.cd5?! Nd2 16.Qa2 Nf1 17.dc6 A1) 17...Ne3?? 18.cb7 Na6 19.ba8R (19.ba8B?! Be5 20.fe5 Qa8+–; worse 19.ba8N Be5 20.fe5 Qa8+–; worse 19.ba6 Be5 20.fe5 Rb8+–) 19...Qa8 20.Bf3+–; A2) 17...bc6 18.Rf1 a6+–; B) 15.Ne4 de4 16.Qc2+–) 15.e4 (15.Rac1 Bg7+–) 15...Bc8 (15...dc4 16.Bc4 Bc8 17.Rad1+–) 16.cd5 cd5 17.ed5 Qb6 (17...ed5 18.Qd5 Be6 19.Qd8 (19.Qb7?! Qd4 20.Rf2 Nd7+–) 19...Bd8 20.Bf3+–) 18.Rad1 (better 18.Rfd1+–) 18...g5 (18...Bg7+–) 19.Bh5 Be5 (19...Rf8 20.Ba3 gf4 21.Bf8 Nf8 22.Bf7 Kh8 23.Kh1+–) 20.fe5 Re7 (20...Rf8 21.Qc2 Kh8 22.Bf7+–) 21.d6 Rd7 22.Ne4 (better 22.Qc2 Kh8+–) 22...Nc6 23.Nc5 Ne5 (23...Kh8 24.Bf7 Rd8 25.Rc1+–) 24.Nd7 (24.Qc2 f5 25.de5 Rg7+–) 24...Bd7 25.a5! Qa5 (25...Qb5 26.Qb5 Bb5 27.de5 Bf1 28.Rf1+–) 26.de5 Rf8 27.Be2 (27.Rf2 Qb6+–) 27...a6 28.Bc3 Qb6 (28...Qd8 29.ba6 ba6 30.Ba6+–) 29.Bd4 Qd8 (29...Qa5 30.ba6 ba6 31.Qe3+–) 30.ba6 ba6 31.Ba6 Bc6 (31...g4 32.Be2+–) 32.Bc4 (better 32.Bd3!? Qe8 33.Rc1 Kg7 34.Bh7 Rh8+–) 32...Re8 (32...g4 33.Be3 Qa8 34.Ra1+–) 33.Rd2 Be4 34.Bb6 Qd7 35.Bb5 Bc6 36.Bc6 Qc6 37.d7 (37.d7 Ra8 38.Rd6+–) 1–0. Dzieniszewski,Andrzej – Polomski, Krosno Odrzanskie Poland, 1983.

8.Nc3 Ne8 9.Be2 (9.cd5 cd5 10.Bd3 Nd6=) 9...Nd6 (9...dc4 10.Bc4 Nd6 11.Bd3=) 10.Qb3 (10.cd5!? cd5 11.0–0=) 10...dc4 11.Bc4 Nc4 12.Qc4 cb5 13.ab5 Qb6 14.Ba3 ½–½. Labahn,Thomas – Osten,S, Festenburg, 1989.

8.Bd3 a6 9.Nc3 ab5 10.ab5 Ra1 11.Qa1 dc4 12.Bc4 cb5 13.Nb5 Bb5 14.Bb5 Qb6 15.Be2 Nc6 16.0–0 Nb4 17.Rc1 Nbd5 18.Bd4 Qd8 (18...Qd6 19.Rb1+=) 19.Qb2+– Qa8 20.Rb1 (20.Ra1 Qb8+–) 20...b6+= 21.Ne5 (21.d3 Bc5+–) 21...Bc5 22.Nc4 (22.Bc5 bc5 23.Bf3 Qa7+=) 22...Bd4= 23.Qd4 The pressure on the isolated pawn grows (worse 23.ed4 Rb8=+) 23...Rb8 24.Ne5 (24.Nb6? Qc6–+) 24...Qa2 25.Bd3 Kh8?? (better 25...Rc8 26.Ra1 Qb3+=) 26.Nf7+– Kg8 27.Ra1 Qa1?? (27...Qb3 28.Ng5 Rc8+–) 28.Qa1 Kf7 (28...h6 29.Nd6+–) 29.Qa7 (29.Qa7 Ne7 30.Qb8+–) 1–0. GuestPBNJ – DaddyCame, freechess.org, 2017.

8.cd5 cb5 9.de6 Be6 10.ab5 Nbd7 (10...Qc7 11.Nc3 Nbd7 12.Nd4 Bb4 13.Be2 Nc5 14.Qc2 Bc3) 11.Nc3 Nc5 12.Nd4 Qb6 13.Be2 a5 14.0–0 Rfc8.

8.cd5 cd5 9.Nc3 A) 9...h6 A1) 10.h3 Be8 (10...Qa5 11.Bd3 Be8 12.0–0 Nbd7 13.Qe2 Nc5 14.Ba3 Rc8 15.Bc2) 11.d4 Nbd7 12.Bd3 Rc8 13.0–0 (13.a5 Ne4 14.Ne4 de4 15.Be4) 13...Nb6 14.Qe2 (14.Qc2 Nc4 15.Bc4) 14...Bd6 15.Nd2; A2) 10.Qb3 Bc8 11.d4 b6 12.Bd3 Bb7 13.0–0 Nbd7 14.Rfc1 Rc8 15.Ba3; A3) 10.Be2 Be8 11.0–0 (11.d4 Nbd7 12.0–0 Rc8 13.Rc1 Nb6 14.Ne5 Bd6 15.Qb3; 11.Qb3 Nbd7 12.d4 Rc8 13.0–0 Nb6 14.Ne5 Nbd7 15.f4; 11.Rc1 Nbd7 12.d4 Rc8 13.0–0 Nb6 14.Ne5 Bd6 15.Qb3; 11.h3 Nbd7 12.0–0 Rc8 13.d4 Bd6 14.Ba3 Nb6 15.Qb3) 11...Nbd7 12.d4 Rc8 13.Rc1 Nb6 14.Ne5 Bd6 15.Qb3; A4) 10.Rc1 Bd6 (10...Be8 11.d4 Nbd7 12.Bd3 Rc8 13.Qe2 Nb6 14.0–0 Nc4 15.Bc4) 11.Qb3 (11.d4 a6 12.Bd3 ab5 13.ab5 Ba3 14.Qb3 Bb2 15.Qb2) 11...Be8 12.Ba3 Ba3 (12...Qe7 13.Bd6 Qd6 14.Be2 Nbd7 15.d4) 13.Qa3 Nbd7 (13...a6 14.Qb4 ab5 15.ab5) 14.Be2 (14.d4 Nb6 15.Bd3) 14...Nb6 15.0–0; B) 9...Be8 10.d4 Nbd7 11.Bd3 Nb6 12.0–0 Rc8 13.Qe2 Nc4 (13...Qc7 14.Ne5 Nc4 15.Rfc1) 14.Bc4 Rc4 15.Rfc1; C) 9...Bd6 C1) 10.Qb3 Be8 (10...Ne4 11.Nd5 Qa5 12.Nc3 Nc5 13.Qc4 Be7 14.Be2 Rc8 15.Ne4; 10...a6 11.Bd3 ab5 12.ab5 Ra1 13.Ba1 Be8 14.0–0 Nbd7 15.Na4) 11.d4 Nbd7 12.Bd3 Rc8 13.Ba3 Nb6 (13...Ba3 14.Qa3 Nb6 15.0–0) 14.Ne5 (14.0–0 Nc4 15.Bd6) 14...Ba3 15.Ra3; C2) 10.Rc1 a6 (10...h6 11.Qb3 Be8 12.d4 Nbd7 13.Bd3 Rc8 14.Ba3 Qe7 15.Bd6; 10...e5 11.Be2 Be6 12.Ng5 Nbd7 13.Qc2 Rc8 14.0–0 d4 15.Bd3) 11.Be2 (11.Qb3 Qb6 12.Ba3 Ba3 13.Qa3 ab5 14.Rb1 Rc8 15.Bb5; 11.h4 Qa5 12.h5 h6 13.Bd3 ab5 14.Nb5 Bb5 15.Bb5) 11...ab5 12.ab5 (12.Nb5 Bb4 13.Bd3 Nc6 14.Qc2 Rc8 15.Qb1) 12...e5 (12...Bc8 13.0–0 Nbd7 14.Qc2 Nb6 15.Ra1) 13.0–0 Be6 14.d4 ed4 15.Qd4.

8.cd5 cd5 9.Bd3 Be8 A) 10.0–0 Nbd7 11.Nc3 (11.Bc2 Rc8 12.Nc3 Nb6 13.Ne5 Nfd7 14.Nd7 Qd7 15.d3; 11.Qe2 Nc5 12.Nc3 Rc8 13.Bc2 Nfe4 14.Rac1 Nc3 15.Bc3; 11.Qc2 Rc8 12.Nc3 Nc5 13.Be2 Bd6 14.Rac1 Nce4 15.d3; 11.h3 Nc5 12.Qe2 Bd6 13.Nc3 Rc8 14.Rac1 Nd3 15.Qd3) 11...Nc5 12.Bc2 (12.Qe2 Nfe4 13.Bc2 Rc8 14.Rfc1 f6 15.Nd4) 12...Rc8 13.Qb1 (13.Rc1 Nfe4 14.d3 Nd6 15.e4) 13...h6 14.Ba3 (14.Rc1 Bd6 15.d4) 14...Ncd7 15.Qb3; B) 10.Qc2 Nbd7 11.Nc3 (11.0–0 Rc8 12.Nc3 Nc5 13.Ba3 Bd6 14.Nd4 Bd7 15.f4) 11...Rc8 (11...Nc5 12.0–0 Rc8 13.Ba3 Qc7 14.Nd4 Bd7 15.f4) 12.0–0 Bd6 (12...Nc5 13.Ba3 Bd6 14.Nd4 Bd7 15.f4) 13.Be2 (13.Rac1 Nc5 14.Be2 h6 15.h3) 13...h6 (13...Qa5 14.Rfc1 Nc5 15.d4) 14.Rac1 (14.Nd4 Nc5 15.f4) 14...Nc5 15.h3; C) 10.Nc3 Nbd7 11.Be2 (11.0–0 Rc8 12.Rc1 Nc5 13.Be2 Nfe4 14.d3 Nc3 15.Bc3; 11.Qe2 Nc5 12.0–0 Rc8 13.Bc2 Nfe4 14.Rac1 Nc3 15.Bc3) 11...Rc8 (11...Nc5 12.0–0 Nfe4 13.d3 Nc3 14.Bc3 a6 15.ba6) 12.0–0 Bd6 13.Rc1 h6 14.h3 Rc7 15.Qc2; D) 10.Qe2 Nbd7 11.0–0 (11.Nc3 Rc8 12.0–0 Nc5 13.Bc2 Nfe4 14.Rac1 Nc3 15.Bc3) 11...Nc5 12.Nc3 Rc8 13.Bc2 (13.Rac1 Bd6 14.Bc2 Bd7 15.d4) 13...Nfe4 (13...Bd6 14.Rfc1 Nfe4 15.d4) 14.Rfc1 (14.Rac1 Nc3 15.Bc3) 14...f6 15.Nd4.

8.cd5 cd5 9.Be2 a6 10.0–0 ab5 11.ab5 Ra1 12.Ba1 Qa5 (12...Be8 13.Nc3 Nbd7 14.Qc2) 13.Bc3 Qa2 (13...Qb6 14.Bd4) 14.Be5 (14.Bd4+=) 14...Ne4 15.Nd4 (15.Nc3 Qa3+=) 15...f6 '=' 16.Bb8 Rb8 17.f3 Nd6 18.Nc3 Qa7 19.Qb3 Ra8 20.Nc2 Rc8 21.d4 (21.Qb4 Qa8=) 21...Qa5 22.Na4 (better 22.Nb4!?–/+) 22...Nc4 (22...Qd2 keeps an even firmer grip 23.Bd3 Bb5 24.Ne1–+) 23.Bc4 (better 23.Ra1 Qb5 24.Qb5 Bb5 25.Nc5 Bc5 26.dc5 Rc5 27.Nd4–/+) 23...Rc4 (23...dc4?! 24.Qa2–+) 24.Nc5 Bc5 25.dc5 Qb5 (25...Qd2 might be the shorter path 26.Ne1 Rc3 27.Qb4 Qe3 28.Kh1 Qc5 29.Qc5 Rc5 30.Nd3–+) 26.Qa2 (better 26.Qb5 Bb5 27.Nd4 Rd4 28.ed4 Bf1 29.Kf1–/+) 26...Qc5 '–+' 27.Qa8 (27.Nd4 cannot change destiny 27...e5 28.Qa8 Bc8–+) 27...Qc8 (better 27...Bc8 secures victory 28.Nd4 h6–+) 28.Qc8 Rc8 29.Rf2 e5 (29...Rc4 30.Kf1–+) 30.g4 '?' (30.Rd2!? Ba4 31.Nb4 d4 32.ed4 Rc4–+) 30...Kf7 (30...Rc3 makes it even easier for Black 31.Nb4 Be6 32.Nc2–+) 31.Nb4 Ke6 32.Rd2 Bc6 (32...Rc5 33.Kf2–+) 33.Rc2 (33.h3 Ra8–+) 33...Kd6 34.Rd2 (34.Kf2 Ra8–+) 34...Ra8 35.Kf2 Ra4 36.Nc6 (36.Rb2 Be8–+) 36...bc6 (36...Kc6?! 37.Rc2 Rc4 38.Ra2–+) 37.Rb2 Ra7 38.Ke2 Rc7 (better 38...d4!? seems even better 39.h3–+) 39.Kd3 g6 (39...c5 40.Rb6 Rc6 41.Rb8–+) 40.Kc3 (40.Rb8 Ra7 41.Rf8 Ra3 42.Kd2 Ra2 43.Kd1 Ke7–+) 40...c5 (40...Ra7 41.h4–+) 41.Rb6 (41.e4 d4 42.Kc4 Rc6–+) 41...Rc6 42.Rb7 (42.Rb8 Ra6 43.e4 Ra3 44.Kb2 Rf3 45.Rd8 Ke7 46.Rd5 Re3–+) 42...Ra6 43.Rh7 (43.h3 d4 44.ed4 ed4 45.Kb3 Kd5 46.Rd7 Rd6 47.Rh7 Rb6 48.Kc2 Kc4–+) 43...d4 44.ed4 ed4 45.Kd3 (45.Kb3–+) 45...Ra3 46.Ke2 Re3 47.Kf2 c4 48.Rh8 Re7 49.Rd8 (49.f4 does not solve anything 49...c3 50.Rc8 Kd5–+) 49...Kc5 50.Rc8 (50.h4–+ desperation) 50...Kb4 51.Rc6 (51.h4–+ the only chance to get some counterplay) 51...d3 52.Rb6 Kc3 53.Ra6 d2 54.Rd6 Re1–+ 0–1. Niephaus,Friedel – Geier,Berthold, Bayern–ch Seniors (1), 1996.

8.cd5 cd5 9.Be2 a6 10.Nc3 A) 10...Ne4 11.0–0 A1) 11...g6 12.Qb3 Nc5 13.Qc2 Qc7 14.Rfc1 ab5 15.d4 Na4 16.Nd5; A2) 11...Bd6 12.Qc2 (12.Qb1 f5 13.d3 Nf6 14.Rc1 ab5 15.Nb5 Bb5 16.ab5) 12...Qc7 13.Rfc1 ab5 14.ab5 Ra1 15.Ra1 Rc8 16.Qa4; A3) 11...f5 12.Ne5 (12.Qb3 Nc5 13.Qc2 Qc7 14.d4 Ne4 15.Rac1 Nc3 16.Bc3) 12...Be8 13.Ne4 fe4 14.f3 ef3 15.Bf3 ab5 16.Bg4; A4) 11...Qc7 12.Rc1 Qa5 13.Ne5 ab5 14.ab5 Qb4 15.Qc2 Rc8 16.f3; B) 10...Qb6 11.0–0 Rc8 (11...Bd6 12.h3 ab5 13.ab5 Ra1 14.Qa1 Rc8 15.Bd3 Be8 16.Ba3) 12.Bd3 (12.Ne5 d4 13.a5 Qd8 14.Na4 Nd5 15.Nb6 Nb6 16.ab6; 12.h3 Be8 13.a5 Qd8 14.Qb1 ab5 15.Nb5 Nc6 16.Rc1) 12...Be8 13.Qc2 ab5 14.ab5 Ra1 15.Ra1 Nbd7 16.Ba3.

8.cd5 cd5 9.Be2 Be8 A) 10.Nc3 A1) 10...Bd6 11.Rc1 (11.0–0 Nbd7 12.Rc1 Rc8 13.h3 h6 14.d3 Ne5 15.Ne5 Be5; 11.h3 Nbd7 12.0–0 Rc8 13.Rc1 h6 14.d3 Ne5 15.Ne5 Be5; 11.d4 Nbd7 12.0–0 Rc8 13.Qb3 Nb6 14.Ba3 Nc4 15.Bd6 Qd6; 11.g3 Nbd7 12.0–0 Rc8 13.d4 Nb6 14.Ne5 Nbd7 15.Nf3 Nb6) 11...Nbd7 12.0–0 Rc8 13.h3 h6 14.d3 Ne5 15.Ne5 Be5; A2) 10...h6 A21) 11.0–0 Nbd7 12.Rc1 Rc8 13.d4 Nb6 14.Ne5 Bd6 15.Qb3 Nc4; A22) 11.Rc1 Nbd7 (11...a6 12.0–0 ab5 13.ab5 Nbd7 14.Qc2 Rc8 15.Ra1 Nc5) 12.0–0 Rc8 13.d4 Nb6 14.Ne5 Bd6 15.Qb3 Nc4; A23) 11.d4 Nbd7 12.0–0 Rc8 13.Rc1 Nb6 14.Ne5 Qd6 15.Qb3 Qb4; A3) 10...Nbd7 A31) 11.h3 Qa5 (11...Rc8 12.Rc1 Nb6 13.d3 Qd6 14.0–0 Qb4 15.Qd2 Na4; 11...Bd6 12.Rc1 Qa5 13.0–0 Qb4 14.Ba1 Nb6 15.Rb1 Qa5; 11...h6 12.Rc1 Nb6 13.d3 a6 14.0–0 ab5 15.ab5 Qd6) 12.0–0 Rc8 13.Rc1 Qb4 14.Rc2 Nb6 15.Ne5 Bd6; A32) 11.Rc1 Qa5 (11...Rc8 12.h3 Nb6 13.d3 Qd6 14.0–0 Qb4 15.Qd2 Na4; 11...Bd6 12.0–0 Rc8 13.h3 h6 14.d3 Ne5 15.Ne5 Be5) 12.0–0 Qb4 13.Rc2 Bd6 14.Nd4 Nb6 15.f4 Bd7; A33) 11.0–0 Rc8 (11...Bd6 12.h3 Rc8 13.Rc1 h6 14.d3 Ne5 15.Ne5 Be5; 11...Qa5 12.Rc1 Qb4 13.Rc2 Bd6 14.d4 Nb6 15.Qd2 Nc4) 12.h3 (12.Rc1 Bd6 13.h3 h6 14.d3 Ne5 15.Ne5 Be5) 12...Qa5 13.Rc1 Nb6 14.d3 (14.Qc2 Ne4 15.Qb1 Nc3) 14...Bd7 15.Qb3 Bd6; B) 10.Qc2 Nbd7 (10...h6 11.0–0 Nbd7 12.Rc1 Nc5 13.Ba3 Bd6 14.g3 b6 15.d4 Nce4) B1) 11.0–0 Rc8 (11...Bd6 12.Rc1 g6 13.Ba3 Nc5 14.g3 Rb8 15.d4 Nce4; 11...Nc5 12.Rc1 h6 13.Bd4 Rc8 14.Nc3 Nfe4 15.d3 Nd6) 12.Nc3 Nc5 13.Rfc1 Bd6 14.Nd4 Bd7 15.f4 e5; B2) 11.Nc3 Rc8 (11...Bd6 12.0–0 Rc8 13.Rac1 Nc5 14.g3 Bd7 15.d4 Nce4; 11...Nc5 12.0–0 Rc8 13.Rac1 Bd6 14.g3 Bd7 15.d4 Nce4; 11...g6 12.0–0 Rc8 13.Rfc1 Nc5 14.g3 Bd6 15.d4 Nce4) 12.0–0 Nc5 13.Rac1 Bd6 14.g3 Bd7 15.d4 Nce4; C) 10.0–0 C1) 10...Bd6 11.Ba3 (11.h3 Nbd7 12.Nc3 Rc8 13.Rc1 h6 14.d3 Ne5 15.Ne5 Be5) 11...Ba3 (11...Qe7 12.Bd6 Qd6 13.Nc3 Nbd7 14.Rc1 Nb6 15.Qc2 Rc8) 12.Na3 Nbd7 13.Rc1 Rc8 14.Rc8 Qc8 15.Qa1 Qc7; C2) 10...g6 C21) 11.Nc3 Nbd7 12.d4 Rc8 13.Rc1 Nb6 14.Ne5 Nc4 15.Bc4 dc4; C22) 11.d4 Nbd7 12.Nc3 Rc8 13.Rc1 Ne4 14.h3 Ndf6 15.Ne4 Ne4; C23) 11.Qb3 Bd6 (11...Nbd7 12.d4 Ne4 13.Nc3 Rc8 14.Rfc1 Nd6 15.Nd1 Nb6) 12.Rc1 Nbd7 13.Ba3 Ba3 14.Qa3 Rc8 15.Nc3 e5; C24) 11.h3 Nbd7 12.Nc3 Rc8 13.d4 Qa5 14.Qb3 Qb4 15.Qb4 Bb4; C3) 10...h6 11.Nc3 (11.d4 Ne4 12.Qd3 Nd7 13.Rc1 Ndf6 14.h3 a6 15.Nc3 Nc3) 11...Nbd7 12.d4 Rc8 13.Rc1 Nb6 14.Ne5 Qd6 15.Qc2 Qb4; C4) 10...Nbd7 11.Nc3 (11.d4 Rc8 12.Nc3 Qa5 13.Qb3 Nb6 14.Nd2 Bd7 15.Rfc1 Bb4) 11...Rc8 (11...h6 12.d4 Rc8 13.Rc1 Nb6 14.Ne5 Bd6 15.Qb3 Nc4; 11...Qa5 12.h3 Rc8 13.Rc1 Nb6 14.Qc2 Bd6 15.d4 Ne4; 11...Bd6 12.d4 Rc8 13.Ba3 Ba3 14.Ra3 Nb6 15.Qb3 Nc4) 12.Rc1 (12.h3 Bd6 13.Rc1 h6 14.d3 Ne5 15.Ne5 Be5) 12...Bd6 13.h3 (13.Qc2 Nc5 14.h3 h6 15.d4 Nce4) 13...h6 14.d3 Ne5 15.Ne5 Be5.

8.cd5 ed5 A) 9.Bd3 A1) 9...Bc8 A11) 10.0–0 Nbd7 11.Qc2 Qc7 (11...g6 12.bc6 bc6 13.Qc6 Bb7 14.Qc2 Rc8) 12.Na3 (12.bc6 bc6 13.Bd4 Rb8 14.Na3 a6) 12...c5 (12...Bd6 13.Rab1 Nc5 14.Bf6 Nd3) 13.Ng5 (13.h3 g6 14.Rfe1 Re8) 13...g6 14.f4 c4; A12) 10.Qc2 g6 11.0–0 c5 (11...Nbd7 12.Ba3 Ba3 13.Ra3 c5 14.Nc3 Qe7) 12.Nc3 Nbd7 13.Be2 (13.a5 Bd6 14.Be2 b6) 13...Bd6 (13...Re8 14.a5 Bd6) 14.d4 c4; A2) 9...Bg4 10.h3 (10.Qc2 Nbd7 11.Nc3 Nc5 12.Be2 g6 13.0–0 Bd6 14.bc6 bc6) 10...Bf3 11.Qf3 Nbd7 12.0–0 Bd6 13.Bd4 (13.Bc2 Rc8 14.Rc1 Re8) 13...c5 14.Bf6 Qf6; B) 9.Be2 B1) 9...Bf5 10.0–0 (10.Nc3 c5 11.d4 c4 12.0–0 Bb4 13.Nh4 Be6 14.Qc2 Nbd7) 10...c5 11.d4 c4 12.Nh4 Be6 13.Nc3 Bb4 14.Qc2 Nbd7; B2) 9...c5 10.Qc2 g6 11.Nc3 Bf5 12.Bd3 Bd3 13.Qd3 Qd6 14.0–0 Nbd7; B3) 9...Qc7 10.Nc3 (10.Qc2 a6 11.Be5 Qc8 12.Ng5 Bf5 13.Bd3 Bd3 14.Qd3 g6) 10...Bg4 11.0–0 Nbd7 12.h3 Bf3 13.Bf3 Ne5 14.Be2 Nc4; B4) 9...Be6 10.Qc2 Nbd7 (10...Qc7 11.Be5 Bd6 12.Bf6 gf6 13.Nc3 Nd7 14.0–0 cb5; 10...Qc8 11.Nc3 Bf5 12.d3 Nbd7 13.bc6 bc6 14.e4 Bg4) 11.Nc3 Qb6 12.bc6 bc6 13.a5 Qc7 14.Nb5 Qb7; C) 9.Nc3 Bf5 C1) 10.Be2 c5 11.d4 Nbd7 12.0–0 c4 13.Nh4 Be6 14.f4 Ne8; C2) 10.h3 Qc7 (10...c5 11.g4 Bg6 12.g5 Ne4 13.h4 d4 14.Ne4 Be4) 11.Be2 Nbd7 12.0–0 c5 13.Nh4 Be6 14.Nf3 Ne5; C3) 10.d4 Nbd7 (10...Ne4 11.Bd3 Nd7 12.0–0 Bd6 13.h3 Qf6 14.Qc2 Rfe8) 11.Bd3 Bd3 12.Qd3 c5 13.0–0 g6 14.Ne5 c4.

8.Be2 cb5 9.ab5 dc4 10.Bc4 Qc7 11.Qb3 a6 12.Nc3 (12.d3 Rc8=) 12...Rc8 13.Be2 Be8 (13...Qb6 14.0–0=) 14.0–0+= Nbd7 15.ba6 (15.d4 ab5 16.Nb5 Qd8+=) 15...ba6= 16.Ra6?? (16.Rfc1=) 16...Rab8 (better 16...Nc5 17.Ra8 Nb3 18.Rc8 Qc8–+) 17.Qa2+– Nc5 18.Ra7 Qd6 (18...Qd8 19.d4 Nce4 20.Ne4+–) 19.d4+– Ncd7 (19...Nb7 20.Ba3 Qd8 21.Be7 Qe7 22.Rc1+–) 20.Ba3 (20.Ba3 Qb6 21.Be7 Rc3 22.Ra1+–) 1–0. GuestPNDS – gile, freechess.org, 2017.

8.Be2 b6 9.0–0 cb5 (9...a6 10.Nc3=) 10.ab5+= a6 11.Nc3 a5 12.d3 dc4 13.dc4 Qc7 14.Qc2 h6 15.h3 (15.Rfd1 Rc8+=) 15...Rd8 16.Rfd1 Bd6 (16...Ra7 17.Ne4+=) 17.Ne4+– Ne4 18.Qe4 Ra7 19.Qg4 (19.Bg7!? Bc6 20.bc6 Kg7 21.Nd4 Bh2 22.Kh1+–) 19...e5+= 20.Qg3 (20.Qe4 Re8+–) 20...f6 21.Qh4 Bf5 22.g4 (22.e4!? Be6 23.Ba3=) 22...Bg6 23.g5 (23.Ba3 a4=+) 23...fg5 (23...hg5 24.Qg4 a4–/+) 24.Ng5? (better 24.Qg4!? Re8 25.h4=+) 24...hg5–/+ 25.Qg5 Bh7?? (better 25...Bc2 26.c5 Bd1 (26...bc5? 27.Bc4 Kh8 28.Qh4 Bh7 29.Be5+–) 27.Bc4 Kf8 28.Qf5 Qf7 29.Bf7 Rf7=) 26.Bf3?? (26.Be5 a4+–) 26...Nd7?? (26...Rf8 27.Qg4 Qe7 28.Rd6 Qd6 29.Bd5 Kh8 30.Ba3–+) 27.Bd5?? (better 27.Rd6 Qd6 28.Bd5 Kh8 29.Qd8 Qf8 30.Qf8 Nf8 31.Be5+–) 27...Kh8–+ 28.f4 Nf6 (28...Rf8!? 29.Bc6 Rf5 30.Qg2–+) 29.fe5–/+ Nd5 30.ed6 (30.cd5 Be7 31.Qh5 Bc5–+) 30...Qd6?? (30...Rd6 31.Be5 Rg6 32.Qg6 Qe5–+ (worse 32...Bg6 33.Bc7 Nc7 34.Rd6+–)) 31.Rd5+– (31.Qd5?! Qg3 32.Qg2 Qe3 33.Qf2 Qg5 34.Kh2 Re8=) 1–0. GuestTDCH – GuestQZWP, freechess.org, 2017.

8.Be2 dc4 9.Bc4 cb5 10.ab5 b6 11.0–0 Qe8 (11...a5 12.Qa4+=) 12.Nc3 Qc8 (12...a5 13.Ne5+=) 13.Qe2+– Qc7 14.d4 Bd6 (14...Rc8 15.Ne5 Qb7 16.Ba3+–) 15.e4 (15.Bd3 Bc8+–) 15...Bb4 (15...Rc8 16.Bd3 Bb4 17.Rfc1+–) 16.Rfc1 a5 (better 16...Qb7!? 17.e5 Nh5+–) 17.ba6+– Qd8 (17...Qa7 18.Ne5+–) 18.e5 Bc3 19.Rc3 Nd5 20.Bd5 ed5 21.a7 Nc6 22.e6! fe6 (22...Be6 23.Rc6 Deflection; 22...fe6 23.Rc6 Decoy) 23.Rc6! (23.Rc6 Bc6 24.Qe6 Rf7 25.Qc6 Raa7 26.Ra7 Ra7 27.Qe6 Kh8 28.Ne5+–) 1–0. DEFFM – GuestVLHV, freechess.org, 2017.

8.Be2 Ne4 9.0–0 f6 10.d3 Nc5 11.d4 Ne4 12.Qb3 g6 (12...Be8!?+–) 13.Nbd2 Nd2 14.Nd2 Qc7 15.Rac1 Bd6 (15...Qd6 16.h3+–) 16.Nf3 (16.g3 a5+–) 16...Qd8 17.cd5 (17.h3 Qe7+–) 17...ed5 (17...cd5!? 18.Ba3 Ba3 19.Qa3 a6+–) 18.e4+– Qe7 19.ed5 Qe2? (better 19...cd5 20.Qd5 Be6+–) 20.dc6 Qe6 (20...Be6 21.d5 Nc6 22.bc6 Bf5+–) 21.d5 Qg4 (21...Qf5 22.cb7 (22.cd7?! Nd7 23.Ba3 Ba3 24.d6 Rf7 25.Qa3 Rd8+–) 22...Na6 23.ba8R Ra8 24.ba6+–) 22.cb7 (22.cb7 Na6 23.ba8R Ra8 24.ba6 Ba4 25.Qb7+–; 22.cd7?! Nd7 23.Ba3 Ba3 24.d6 Rf7 25.Qa3 Nb6+–) 1–0. GuestDBJS – GuestDBPS, freechess.org, 2019.

8.Ne5 cb5 9.Nd7 Qd7 10.ab5 b6 (10...Rc8 11.Ra4=+) 11.Be2 Ne4 (11...a5 12.Nc3=) 12.cd5 ed5 13.f3 (13.0–0 Rc8+=) 13...Nc5 (13...Bh4 14.g3 Qh3 15.fe4 Bg3 16.hg3 Qh1 17.Bf1 Qe4 18.Nc3+–) 14.d4+= Ne6 15.0–0 Bg5 16.Qb3 Re8 17.f4 Bf6 18.Bf3 Attacks the isolani on d5 18...Nc7 Attacking the isolated pawn on b5 19.Na3 Qe6? (19...a5 20.Nc2=) 20.Nc2?? (20.Rfc1!? Qd6 21.Rc7 Qc7 22.Bd5 Nd7 23.Bf7 Kh8 24.Be8 Re8+–) 20...Nd7? (20...a5 21.ba6 Nba6 22.Rfe1=) 21.h3 (21.Nb4 Nc5 22.dc5 Bb2 23.cb6 Qb6 24.Qb2 Re3+–) 21...a5 (21...Bh4 22.f5 Qd6+– (22...Qf5?? 23.Bg4 Qg6 24.Bd7+–)) 22.ba6!+– b5 (22...Ra6 23.Nb4 Double attack (23.Nb4 Decoy); 22...Na6 23.Nb4 Double attack (23.Qd5 Deflection; 23.Nb4 Decoy)) 23.a7 (23.Bg4!? Qe7 24.Ba3+–) 23...Nb6+– 24.Bg4 Qd6 25.Ba3 Qc6 26.Bc5 Nc4 The backward pawn on e3 becomes a target (better 26...Na4!? 27.Ra4 ba4+=) 27.Nb4+– Qb7 28.Rfe1 Ne6 29.Bf3?? (better 29.Be6 Re6 30.Nc2+–) 29...Rad8?? (better 29...Nc5 30.dc5 Ba1 31.Ra1 Ra7–+) 30.a8Q! Ra8 (30...Qa8 31.Ra8 Combination; 30...Ra8 31.Nd5 Deflection) 31.Ra8 Qa8 32.Bd5 (32.Nd5!? Qa6+–) 32...Qc8+– 33.Be6 Re6 34.Nd5 Bh4 35.Ra1 Nd2? (better 35...Qe8+–) 36.Qb5+– Ne4 37.Ne7?? (better 37.Nb6 Bf2 38.Kh2 Rb6 39.Bb6 Bg3 40.Kh1+–) 37...Be7= (worse 37...Re7 38.Be7 Be7 39.Qd5+–) 38.Be7 (38.f5!? Nc5 39.fe6 Ne6 40.Qd5=+) 38...Re7–/+ 39.Qd5 Re8 (39...Qf8 40.Ra8 Re8 41.Re8 Qe8 42.Kf1–/+) 40.Kh2 (better 40.Ra7!? Kh8 41.Qf7 Qc1 42.Kh2=) 40…Nf6–+ (40...Nf6 41.Qf3 Ne4–+) 0–1. GuestRRKZ – GuestVWDP, freechess.org, 2017.

8.Ne5 Be8 9.Be2 dc4 10.Bc4 cb5 11.ab5 Nbd7 12.Nd7 Bd7 13.0–0 Qc7 14.Be2 Ne8 (14...e5 15.Qa4=) 15.Nc3 Bd6 16.h3 Nf6 17.Qb3 Qc5 18.Ba3 Qc7 19.Rfc1 Qb8 20.Bf3 Rc8? (better 20...Ba3 21.Ra3 Rd8+=) 21.Bd6+– Qd6 22.Bb7 Qd2 (22...e5+–) 23.Ba8 (23.Bc8?! Rc8 24.Rc2 Qd3+–) 23...Ra8 (23...Bb5 24.Bb7 Rc5+–) 24.Rd1 (24.Rd1 Qd1 25.Nd1+–) 1–0. Krafzik,Joachim (1935) – Geier,Berthold (1605), 13sen.WttgEM/Ellwangen, 2001.

8.Ne5 Be8 9.Be2 Nbd7 10.cd5 (10.bc6 Ne5 11.cb7 Nd3 12.Bd3 Rb8+=) 10...cd5 (10...Ne5!? 11.Be5 Qd5 12.Bf6 Bf6=+ (worse 12...gf6 13.0–0+=)) 11.Nf3 Bd6 12.0–0 a6 13.Nd4 (13.Ba3 Nc5=) 13...Bc5 (13...Nb6 14.Na3=) 14.d3 e5 (14...ab5 15.Nb5 Be7 16.Qc2=) 15.Nf5+= g6 (15...ab5 16.ab5 Ra1 17.Ba1+=) 16.Nh6 (16.d4!?+–) 16...Kg7= 17.Ng4 Ng4 18.Bg4 f5 19.Be2 (19.d4 ed4 (worse 19...fg4 20.dc5 ab5 21.ab5+–) 20.Be2 Qf6+=) 19...Kg8 (19...d4 20.ed4 Bd4 21.Bd4 ed4 22.Nd2=) 20.Nd2 (20.d4 ed4 21.Bd4 f4+–) 20...Bf7 21.Nf3 (21.d4 ed4 22.Nb3 Bd6 23.Nd4 Qh4+–) 21...Re8 (21...Bd6!?=) 22.d4+– ed4 23.Nd4 Nf6 (23...Ne5 24.ba6 ba6 25.Rb1+=) 24.Re1 (24.Rc1 Qd6+–) 24...ab5 (24...Bb4 25.ba6 Be1 26.ab7 Bf2 27.Kf2=+) 25.Bb5+– Rf8 26.Qb3 Ne4 27.Qd3 (27.f3 Nf6+–) 27...Nd6 (27...Qh4 28.Re2+=) 28.Rac1 (28.Nf5 Nf5 29.Qc3 Be8 30.Qc5 Bb5 31.Qb5 Qa5+–) 28...Qb6 (better 28...Nc4 29.Bc4 dc4 30.Nf5 gf5+– (30...cd3?? 31.Nh6)) 29.Rc5?? (better 29.Nf5 gf5 30.Qc3+–) 29...Qc5= 30.Ba3 (30.Rc1 Qa7=+) 30…Qb6=+ 0–1. GuestXWMZ – GuestSCSG, freechess.org, 2017.

7.c4 Nbd7

8.Nc3 Qc7 9.Be2 Bd6 (9...dc4 10.0–0=) 10.cd5 (10.0–0 e5 11.g3 e4=) 10...cd5 (10...ed5 11.0–0=) 11.Rc1 Qb8 12.d4 b6 13.0–0 Bb7 14.Qb3 Qd8 15.Bd3 (15.Ba3 Qe7 16.Bd6 Qd6+=) 15...h6 (15...Qe7 16.Rc2=) 16.Ba3+= Qe7 17.Bd6 Qd6 18.Ne2 Rac8 19.Qb2 Ne4 20.Nf4 Ndf6 (20...Rfe8 21.h4+=) 21.Ne5 Rc7? (better 21...g5!? 22.Ne2 Nd7+=) 22.f3+– Ng5 23.Rc7 Qc7 24.Rc1 Qd6 (24...Qe7 25.Kf2+–) 25.Nc6 (better 25.Qc3!? Re8+–) 25...Ra8 26.a5 Bc6 (26...Rc8 27.h4 Ngh7 28.Na7 Rc1 29.Qc1 ba5 30.Kf2+–) 27.Rc6 (27.bc6!? Qc7+–) 27...Qd8+– 28.h4 (28.a6 Ngh7+–) 28...Ngh7 29.a6 Nf8 30.g4 Qb8 (30...Qe7 31.Kg2+–) 31.g5+– hg5 32.hg5 N6h7 (32...N6d7 33.g6 fg6 34.Qg2+– (34.Ne6?! Qe8 35.Nf8 Qe3 36.Qf2 Qg5 37.Qg2 Qe3 38.Qf2 Qg5 39.Qg2 Qe3 40.Qf2=; 34.Ng6 Qg3 35.Qg2 Qe1 36.Kh2 Qe3–/+; worse 34.Bg6 Ng6 35.Ng6 Qg3 36.Qg2 Qe1 37.Kh2 Qe3=)) 33.g6 fg6 34.Qg2 (34.Ne6 Ne6 35.Re6 Ng5 36.Rg6 Qg3 (36...Nf3?! 37.Kf1 Qc7 38.Qg2 Qc1 39.Kf2 Qd2 40.Kf3 Rf8 41.Kg3 Qe3 42.Kh2=) 37.Kf1 Rf8–+) 34...g5? (better 34...Qd8!?+–) 35.Ne6 (better 35.Bh7 Nh7 36.Ne6+–) 35...Ne6? (35...Qe8 36.Bh7 Nh7+–) 36.Bh7 (36.Re6?! Qc8 37.Rc6 Qd7+–) 36...Kh7 37.Qh3 (37.Re6?! Qf8+–) 37...Kg8 38.Qe6 (38.Re6?! Qc7 39.Rc6 Qf7+–) 38...Kh8 39.Kg2 Qe8 40.Qd5 (40.Qe8 Re8 41.Rc7 Ra8+–) 40...Qe3 41.Rh6!! gh6 42.Qa8 Kg7 43.Qa7 Kg8 (43...Kg6 44.Qb6 Kh5+–) 44.Qb6 Qe2 (44...h5 45.Qd8 Kg7 46.Qc7 Kh6 47.Qc6 Kg7+–) 45.Kg3 Qe1 46.Kg4 Qh4 47.Kf5 Qf4 48.Kg6 Qf7 49.Kh6 Qf3 50.Qb8 Kf7 51.Qb7 Kf8 (51...Qb7 52.ab7 g4 53.b8Q Ke6 54.b6 Kd5 55.b7 Ke4 56.Qe5 Kf3 57.b8Q Kf2 58.Qf4 Kg2 59.Qg3 Kf1 60.Qb5) 52.Qf3 (52.Qf3 Ke7 53.a7 g4 54.Qe4 Kd6 55.a8Q Kd7 56.Qf8 g3 57.Qc6) 1–0. GuestBJQR – GuestCVVP, freechess.org, 2020.

8.d4 a6 9.Nc3 Bb4 10.Qb3 a5 (10...Qa5 11.bc6 bc6 12.Bd3=) 11.Be2 Ne4 (11...dc4 12.Bc4 Nb6 13.Ba3=) 12.0–0+= Nc3 13.Bc3 Bc3 (13...cb5 A) worse 14.Bb4 bc4 15.Ba5 Qa5–/+ (15...cb3?! 16.Bd8 Rd8 17.Bb5=; worse 15...Ra5 16.Qc3–/+); B) 14.ab5 dc4 15.Bc4 Bc3 16.Qc3+=) 14.Qc3+– Nf6 15.Ne5 Bd7 16.Qa3 Ne4 17.f3 Nd2 18.Rfd1 Nc4 19.Bc4 dc4 20.Nc4 (better 20.b6+–) 20...cb5=+ 21.ab5 Bb5 22.Nd6 Bc6 23.e4 White plans d5 23...Qf6 24.d5 ed5 25.ed5 Bd7 (25...Ba4! 26.Qa4 Qd6–/+) 26.Nb7= a4 27.Rab1 (27.Nc5 Qb6=) 27...Bf5 28.Rb4 Bc2 29.Rdd4 (29.Rc1 Rfc8=+) 29...Qe5 (29...Rfb8 30.Nc5 Rb4 31.Rb4–/+) 30.Qc3 (30.h3 Rfb8 31.Qc3 a3–/+) 30...Bb3 Attacks the isolani on d5 (30...a3 31.f4 Qe2–+) 31.Re4?? (31.f4 Qf5 32.Qd3=+ (32.Rb3? ab3 33.Rd1 Rfb8 34.Qb3 Qf4–+)) 31…Qc3–+ 0–1. GuestZPNQ – GuestMCDW, freechess.org, 2017.

8.d4 Bb4 9.Nbd2 Ne4 10.Be2 Nc3 11.Bc3= Bc3 12.Rc1 Ba5 (12...Bb4 13.0–0+=) 13.cd5 (13.0–0 cb5 14.ab5 a6+=) 13...cd5 14.0–0 Nb6 (14...a6 15.Qc2+=) 15.Ne5 (15.Nb3 Bb4 16.Nc5 Nd7+=) 15...f6 (15...Na4 16.Qa4 Bd2 17.Rc2=) 16.Nd3 (16.Nef3+=) 16...Bd7 (better 16...Na4!? 17.Qa4 Bd2=) 17.Nc5+– Rb8 18.Ndb3 Bb4 19.Nd7 (19.Bd3 Qe8+–) 19...Qd7+= 20.Nc5 Bc5 (20...Qe7 21.Qb3 Bc5 22.Rc5+=) 21.dc5 Nc8 (21...Na8 22.Bd3+=) 22.e4 (22.a5 Ne7+=) 22...Rd8 (22...Ne7 23.Re1+=) 23.c6 (23.ed5!? ed5 24.Re1+–) 23...bc6= 24.bc6 Qc7 25.ed5 Rd5 26.Qc2 Kh8 (26...Ne7 27.Rfd1=) 27.Bf3 Rd6 28.Rfd1 Rd1 29.Rd1 Nd6 30.Qa2 e5? (better 30...Re8+=) 31.Qe6+– Rd8?? (better 31...Ne8+–) 32.h3 (better 32.Rd6 Rg8 33.h3+–) 32...h6+= 33.Kh1 e4 (33...a6!?+=) 34.Be4+– Ne4 (34...f5!? 35.Bc2 Qc6 36.Bf5 Rf8 37.Qd6 Qd6 38.Rd6 Rf5+–) 35.Rd8+– Qd8 36.Qe4 Qd1 (36...Kg8 37.f4+–) 37.Kh2 Qd6 (37...Qc1 38.g4+–) 38.g3 Qc7?! (38...Qc5 39.Kg2+–) 39.Qe8 (39.Qd5 Qe7 40.Qd7 Qe2 41.Qc8 Kh7 42.Qf5 g6+–) 39...Kh7 40.Qd7 Qb6 41.Kg2 a6 (41...Qb1 42.c7 Qe4 43.Kf1 Qb1 44.Ke2 Qe4 45.Kd2 Qb4 46.Ke3 Qb6 47.Ke4 Qb7 48.Kf5 Qb6+–) 42.c7 Qb7 43.Kh2 Qf3 44.Qd2 (44.Kg1 Qc3 45.Qf5 Kh8 46.c8Q Qc8 47.Qc8 Kh7 48.Qa6 f5+–) 44...Qc6?? (44...Qf5+–) 45.Qd3 Kh8 46.Qd8 Kh7 47.c8Q Qf3 48.Qd2 (48.Qd2 Qb3 49.Qdd7+–; 48.Qg8 Kg6 49.Qce8 Kg5 50.Qg7 Kf5 51.Qgg6) 1–0. GuestCKQB – fthompsonca, freechess.org, 2016.

8.d4 Ne4 9.c5 e5 10.de5 (10.Bd3 Qa5 11.Nfd2 ed4 12.ed4 Bg5=) 10...Ndc5–/+ 11.Nbd2 Qa5 12.Be2 Nb3?? (better 12...Nd2 13.Nd2 Ne4–/+) 13.Qb3+– 1–0. GuestMKNW – GuestJKKF, freechess.org, 2017.

8.d4 Ne4 9.Be2 Bb4 10.Nbd2 Qa5 11.Bc1 (11.Qc2 Rd8=) 11...Nc3–/+ 12.Qc2 Nf6 (better 12...Ne2 13.Ke2 cb5=+) 13.0–0?? (better 13.Bd3=) 13...Ne2–+ 14.Kh1 Nc1 15.Rfc1 h6 (15...Bd7 16.Nb3 Qd8 17.Ne5–+) 16.bc6 bc6 17.cd5 cd5 18.Nb3 Qd8 19.Qc6 (19.Nc5 Qd6–+) 19...Bd7 20.Qa6 Ne4 21.Ne5 (21.Kg1 Qb6 22.Qd3 Rfc8–+) 21...Nf2 22.Kg1 Ne4 23.Qb7 (23.Qd3 Rc8–+) 23...Qg5 24.Qb4 (24.Rf1 Qe3 25.Kh1 Qb3 26.Qd7–+) 24...Qe3 25.Kh1 Nf2 26.Kg1 Nh3 27.Kh1 Qg1! 28.Rg1 (28.Rg1 Nf2) 28…Nf2 0–1. GuestNJRN – MSTGDD, freechess.org, 2017.

8.cd5 cd5 9.Be2 Qb6 10.0–0 Bb4 11.d3 a6 12.d4 ab5 13.ab5 Ra1 14.Ba1 Bd6 15.Bb2 Qa5 16.Qc2 b6 17.Nc3 Bb4?? (better 17...Qa7+=) 18.Ra1+– Bc3 (18...Qa1 19.Ba1 Bb7+–) 19.Ra5 (better 19.Bc3 Qa1 20.Ba1+–) 19...Ba5 20.Ba3 Re8 21.Qc7 Ne4 22.Ne5 Ne5 23.de5 Nd2? (23...f5+–) 24.Qc6 (24.Qc6 Bd7 25.Qd7+–) 1–0. GuestDTZV – GuestWWVC, freechess.org, 2017.

8.cd5 cd5 9.Be2 Qc7 10.0–0 e5 11.Qc1 Qc1 (11...Qb8 12.Ba3 Bd6 13.Bd6 Qd6 14.Qa3 Qa3 15.Na3=) 12.Rc1 e4 13.Nd4 Nc5 (13...Ne5 14.a5=) 14.Ba3 b6 15.a5 Bd7 16.Nc6 (better 16.Nc3 Rfc8 17.Na4+–) 16...Rfe8?? (better 16...Bd6=) 17.Ne7+– Re7 18.ab6 ab6 19.Bc5 bc5 (19...Ra1 20.Be7 d4 21.ed4 Be6+–) 20.Ra8 Ne8 (20...Be8 21.Rc5 g5 22.Ra6+–) 21.Rc5 1–0. GuestYZYP – guestplayer, freechess.org, 2020.

8.Be2 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 Bd6 12.d4 Qe7 (12...dc4 13.bc6 bc6 14.Nbd2=) 13.c5+= Bb8 (13...Bc7 14.b6 Bb8 15.Nbd2+=) 14.Qa4 (14.bc6 bc6 15.Qa4+=) 14...e5 (14...cb5!? 15.Qb5 Bc7+=) 15.bc6+– bc6 16.Qc6 e4 (16...ed4 17.Bd4 Ne5 18.Ne5 Be5 19.Nc3+–) 17.Nh4 (17.Nfd2 Rd8+–) 17...g6 (17...Qd8 18.Nc3 Re8 19.g3+–) 18.Nc3+– Qe6 (18...Rd8 19.Rb1+–) 19.Qe6 fe6 20.g3 (20.f4 Kf7+–) 20...Ne8 (20...g5 21.Ng2+–) 21.Rb1 (21.f4 Nc7+–) 21...Bc7 22.Nb5 (22.f4 ef3 23.Nf3 Ndf6+–) 22...Bd8 (better 22...g5 23.Ng2 Ba6+–) 23.Ng6! hg6 24.Na7 Nb6 (24...Nef6 25.Nc8 Bc7 26.Na7+–) 25.Nc6 (25.cb6 Bb7+–) 25...Nc4 26.Nd8 Nf6 (26...Nc7 27.Nc6 Bd7 28.Rb7 Bc6 29.Rc7+–) 27.Bc4 Rd8 28.Bb5 Nh7 (28...g5 29.Kg2+–) 29.c6 (29.h4 Nf6+–) 29...Ng5 30.c7 (30.h4 Nf3 31.Kg2 Kg7+–) 30...Nf3 31.Kg2 Rf8 32.h4 (32.Bc3 g5+–) 32...Kg7 (32...Nd2 33.Rb2 Nf3 34.Ra2+–) 33.Bc3 Kf6 (33...Rh8 34.Be2 g5 35.Bf3 ef3 36.Kf3 gh4 37.gh4 Rh4 38.Rb8+–) 34.Be2 Kg7 (34...g5 35.hg5 (worse 35.Bf3 ef3 36.Kf3 gh4+–) 35...Ng5 36.Rb8+–) 35.Rb8 Kh6 (35...Kf7 36.Bb4 Re8 37.Bf3 ef3 38.Kf3+–) 36.Bb4 Re8 (36...Rh8 37.Ba6! Ba6 38.Rh8 Kg7 39.Ra8+–) 37.Ba6! (37.Ba6 Ba6 38.Re8+–) 1–0. DEFFM – GuestCLRK, freechess.org, 2018.

8.Be2 cb5 9.ab5 a6 10.0–0 a5 (10...dc4 11.Bc4 Nb6 12.Be2=) 11.d4 b6 (11...dc4 12.Nbd2=) 12.Nbd2 dc4 13.Nc4 Bb7 14.Qb3 Bd5 15.Nfd2 (15.Rfc1 Ne4=) 15...Rc8 (15...Ra7 16.Qa4=) 16.Bf3 Bf3 17.Nf3 Nd5 18.Rac1 (18.Rfc1 N7f6+=) 18...Bb4 19.e4 Nf4 (19...Nc7 20.Bc3 Qe7 21.Bb4 ab4 22.Rb1 Nb5 23.Qb4 Qb4 24.Rb4=) 20.Qe3+= Ng6 21.Rfd1 Qe7 22.d5 ed5 23.Rd5 Qe6? (better 23...Bc5!? 24.Qd2 Nf6 25.Bf6 Qf6=) 24.Nd4 (24.Ng5 Qe7 25.Qh3+– (worse 25.Nb6 Nb6 26.Qb6 Nf4 27.Rc8 Rc8=+)) 24...Qe7?? (better 24...Qe8 25.Nc6 Bc5+–) 25.Nf5+– Qe6 (25...Qf6 26.Bf6 Nf6+–) 26.Qh6!! (26.Bg7?! Rfe8 27.Rd4 Bc5+–) 26…Nf6 (26...gh6 27.Nh6 Mate attack) 1–0. GuestWKNQ – GuestHBXF, freechess.org, 2019.

8.Be2 cb5 9.ab5 b6 10.0–0 Bb7 11.Nd4 dc4= 12.Bc4 Ne5 (better 12...Qc7!? 13.Be2 e5=) 13.Ne6+– fe6 14.Be5 Kh8 (14...Bd5 15.Qe2+–) 15.Be6 Qd3 (15...Bd5!? 16.Bd5 Qd5 17.Bf6 Bf6+–) 16.Nc3 Ne4 17.Qg4 Ng5?! (17...Bf6 18.Bf6 Nf6+–) 18.Bc4 Qg6 19.f4 Nf3 (19...Nf7 20.Qg6 hg6+–) 20.gf3 Qg4 21.fg4 Rac8 (21...Rfd8+–) 22.Ra7 Rc4 23.Rb7 Bf6 (23...Re8 24.Ra1 Bf8 25.Rb6+–) 24.Bf6 gf6 25.Ra1 Rd8 26.Raa7 (26.Nd5 Rdc8 27.Raa7 Rc1 28.Kf2 R8c7 29.Rc7 Rc7 30.Rc7 Kg8 31.Nf6 Kf8 32.g5 h6 33.g6 h5 34.g7) 26...h5 27.Nd5! hg4 (27...Rd5 28.Ra8 Mate attack) 28.Rh7 Kg8 29.Nf6 Kf8 30.Rh8 (30.Rhf7) 1–0. DEFFM – GuestZSHZ, freechess.org, 2019.

8.Be2 Nb6 9.Qc2 c5 10.Na3 Qc7 11.Be5 Bd6 (11...Qd8 12.0–0=) 12.Bf6+= gf6 13.a5 Nd7 14.cd5 ed5 (14...Qa5 15.de6 fe6 16.0–0+=) 15.Qf5 Ne5 16.Qf6 Ng6 17.h4 Be5 (17...Be7!? 18.Qc3 Bd6+–) 18.Ne5+– Qe5 19.Qg5?? (better 19.Qe5 Ne5 20.d4 cd4 21.ed4+–) 19...Qa1–+ 20.Nb1 (20.Bd1 Qa3 21.h5–+) 20...Qb1 21.Bd1 Qf5 (21...Bf5 22.0–0 Bd3 23.Be2 Qb5 24.Bd3 Qd3 25.h5–+) 22.Qg3 Kh8 23.Bg4 (23.Qd6 d4!–+) 23...Qb1 (better 23...Qg4 24.Qg4 Bg4 25.f4–+) 24.Bd1 Bf5 (better 24...Re8!? 25.Qf3 Ne5 26.Qf6 Kg8 27.Qg5 Kf8 28.h5–+) 25.h5 Ne7 (better 25...Bc2 26.0–0 Bd1 27.hg6 hg6 28.Qe5 Kg8 29.Qd5–+) 26.Qe5 Kg8 (better 26...f6 27.Qe7 Bc2 28.0–0–+) 27.h6 (27.h6 f6 28.Qe7–+). GuestYDBL – GuestBTXT, freechess.org, 2017.

8.Be2 Nb6 9.cd5 cd5 10.0–0 Bd7 11.d3 (11.Na3 Be8=) 11...Rc8 (11...a6 12.ba6 Ra6 13.Nc3=) 12.Nbd2+= Na8 (12...Be8 13.Qb3+=) 13.Qb3+– b6 (13...Qa5 14.Ba3 Rfe8 15.Be7 Re7 16.Qa3+–) 14.Rfc1 (14.Ne5 Qc7+–) 14...Rc1+– 15.Rc1 Qb8 16.Ne5 (16.Nd4 Rc8 17.Nc6 Bc6 18.bc6 Qd6+–) 16...Rc8 17.Nc6 Bc6 18.bc6 Qd6 19.Qc3 (19.Qc2 Nd7 20.Qc3 Bf6+–) 19...Qb4 (19...Qc5 20.Nb3 Qc3 21.Rc3+– (21.Bc3?! Rc6 22.Nd4 Rc8=+)) 20.Qb4 Bb4 21.Nf3 Kf8 (21...Nc7 22.g3+–) 22.Ne5+– Ke8 (better 22...Ne8+–) 23.Nd7 (better 23.h4!?+–) 23...Nd7+= 24.cd7 Kd7 25.Rc8 Kc8 26.Bg7 Kd7 (26...Nc7 27.g4+=) 27.Bh5 (27.g4 Nc7+=) 27...f5 28.g4 (28.f4 Nc7+=) 28...fg4 29.Bg4 Bd6 (29...Nc7 30.Kf1+=) 30.f4 Nc7 31.f5 (31.Bf6 Be7 32.Bb2 b5 33.ab5 Nb5=) 31...ef5 (31...h5 32.Bh5 ef5 33.Bf6=) 32.Bf5+= Ne6 33.Bh6 a6 (33...Ke7 34.d4+=) 34.d4+– b5 35.ab5 ab5 36.Bh7 b4 37.Bc2 Nc7 (37...Be7 38.Kg2+–) 38.h4 Nb5?? (better 38...Ne8+–) 39.Ba4+– Kc6 40.h5 Kb6 (40...Be7 41.Bf4 Bf8 42.h6 Bh6 43.Bh6+–) 41.Bg7 Nc3 42.Bc2 Ne4 43.Be4 (better 43.h6 Ng5 44.Bf6+–) 43...de4+= 44.h6 (44.d5 b3+=) 44...b3= 45.d5 Ba3 46.Bd4 (46.h7 b2 47.h8Q b1Q 48.Kg2 Qa2 49.Kg3 Qd5 50.Qb8 Ka5 51.Bc3 Ka6 52.Qc8 Kb5 53.Qe8 Qc6 54.Qh5 Kc4=) 46...Kc7 47.h7 b2 48.h8Q (48.Be5 Kd7=) 48...b1Q 49.Kg2 Qa2 50.Kg3 Bd6 51.Be5 Qd5 ½–½. Raue,Thorsten (1825) – Blanke,Martin (1705), Muensterland Verbandsklasse–B, 2007.

8.Be2 dc4 9.Bc4 cb5 10.ab5 Nb6 11.Be2 Bd6 12.0–0 Bd7 (12...Ng4 13.Qc2=) 13.d4 Qe7 14.Qb3 (14.Ba3 Nbd5=) 14...Rfc8 15.Nbd2 (15.Nc3 Nbd5=) 15...Qf8 (15...Nbd5 16.e4 Nf4 17.Bc4+=) 16.e4 Nh5 17.e5 (17.g3!?+=) 17...Nf4= 18.Bd3 Nd3 (18...Bb4 19.Rfb1=) 19.Qd3 Be7 20.Rfc1 (20.Rfb1 Nd5 21.Ba3 Ba3+=) 20...Rc1 21.Rc1 (21.Bc1!? Qe8 22.Rb1=) 21...Qe8–/+ 22.Qb3 (22.Ba3 Bb5 23.Qb3 Bc6–/+) 22...Bb5 23.Rc7? (better 23.Ba3 Bc6 24.Be7 Qe7 25.Rc5–/+) 23...Bc6 24.Nc4 (24.Bc1 Bd8 25.Rc6 Qc6–+) 24...Nc4 (24...Bd5 25.Qc2 Nc4 26.Rc4 Bc4 27.Qc4–+) 25.Qc4 Bd8 26.Rc6 Qc6 27.Qb3 (27.Qc6 bc6 28.Ba3 Bb6–+) 27...a5 28.Ba3 (28.Bc3 b5–+) 28...b5 29.Bc5 (29.Qb1 b4 30.Bc1 a4–+) 29...Be7 30.Qe3 (30.Qc3 b4 31.Qc2 a4–+) 30...Bc5 31.dc5 Rc8 0–1. GuestNPTJ – abadjm, freechess.org, 2018.

8.Be2 dc4 9.Bc4 Nb6 10.Qb3 Nc4=+ 11.Qc4 cb5 (11...Qd5 12.Qd5 ed5 13.Nc3=+) 12.ab5 Bd7 13.0–0 Qb6 Attacking the isolated pawn on b5 14.Nc3 Rfc8 15.Qb3 (15.Qd3 a5=+) 15...a6=+ 16.Na4? (better 16.Ba3!? Ba3 17.Ra3 ab5 18.Ra8 Ra8 19.Rb1=+) 16...Qb5–/+ 17.Qb5 Bb5 (worse 17...ab5 18.Nb6 Ra1 19.Ra1=+) 18.Rfe1 (18.Nb6 Bf1 19.Nc8 Rc8 20.Kf1 Nd5–/+) 18...Rc2–+ 19.Nd4? (better 19.Ba3 Ba3 20.Ra3–+) 19...Ba4 20.Nc2 Bc2 21.Rec1 (21.f3 Bg6–+) 21...Be4 22.f3 Bc6 23.e4 Kf8 (23...Nh5 24.Be5–+) 24.d4 Bb5 (better 24...a5 25.Ba3–+) 25.Rc7 (25.g4–+) 25...Bb4 (better 25...Bc6–+) 26.Rb7 Rc8 (better 26...Rd8–+) 27.Ba3? (better 27.Rc1!? Rd8 28.Rcc7–/+) 27...Ba3–+ 28.Ra3 Rc4 29.d5 (29.Kf2 Rd4 30.Ke3 e5–+) 29...ed5 30.ed5 Nd5 (better 30...Rc1 31.Kf2 Rc2 32.Ke3 Nd5 33.Ke4 Nf6 34.Kf5 Rg2 35.h3–+) 31.Kf2 (31.Ra2 g6–+) 31...g6 (better 31...Rc2 32.Kg1 Nf4 33.Rb8 Ke7 34.Re3 Kf6 35.h4 Rg2 36.Kh1–+) 32.Ra2 Rc7 (32...Kg7 33.Rd2 Rc5 34.Ra7–+) 33.Rc7 Nc7 34.h3 (34.Rc2 Ne8–+) 34...Ke7 35.Ke3 Ke6 (35...Nd5 36.Kf2–+) 36.g3 (36.Ra1 Nd5 37.Kd4 Kd6–+) 36...Nd5 37.Kd4 Nb4 38.Rb2 Nc6 39.Kc5 (39.Kc3 Ne5 40.f4 Nd3 41.Re2 Kd6–+) 39...Ne5 40.Rf2 (40.Rb3–+) 40…Nd3 (40...Nd3 41.Kd4 Nf2–+) 0–1. retiponziani (1885) – CobraKhan (1975), ChessWorld.net, 2016.

8.Be2 Qc7 9.0–0 e5 10.d4 e4 11.Nfd2 Bd6 12.g3 1–0. DEFFM – GuestPRCP, freechess.org, 2018.

8.Be2 Qc7 9.0–0 e5 10.cd5 cd5 11.d3 Bd6 12.h3 Re8 Black intends e4 13.Nbd2 b6 14.Rc1 Qd8 15.d4 (15.Rc2 Qe7=) 15...e4 16.Ne1 a5 17.f3 (17.Qb3 Bb7=+) 17...ef3–/+ 18.Rf3 Ne4 19.Nd3 Bb7 20.Qe1 (20.Nf4!? Ndf6 21.Ne4 Ne4 22.Bd3–/+) 20...Ng5–+ 21.Bf1 (better 21.Rf5 Re3 22.Nf1–+) 21...Nf3 22.Nf3 Qe7 23.Nde5 f6 (23...Be5?! 24.Ne5 Rac8 25.Bd3–+) 24.Nd7 Qd7 25.Qf2 (25.Bd3 Qe7 26.Kf2 Rac8–+) 25...Qe7 26.Re1 (26.Rc3 Rac8 27.Rb3 Kh8–+) 26…Qe4 0–1. GuestMJRN – GuestJFDH, freechess.org, 2017.

8.Be2 Ng4 9.h3+= Ngf6 10.0–0 dc4 (10...Nc5 11.Nc3+=) 11.Qc2 (11.bc6 bc6 12.Na3 c3 13.Bc3 Nd5+=) 11...cb5 12.ab5 Nb6 13.Na3 Bd7 14.Ne5 Can c4 get defended? 14...Be8 (14...Nfd5 15.Nd7 Qd7 16.Nc4 Qb5 17.Nb6 Qb6 18.Rfc1=) 15.Nac4 Rc8 (15...Bb5 16.Nb6 Be2 17.Na8 Bf1 18.Ra7+= (worse 18.Rf1 Qa8 19.Ra1 a6=+; worse 18.Kf1 Qa8 19.Bd4 a6=+)) 16.Ra7+– Nc4 17.Nc4 Bb5 18.Rb7 Qd5 19.Re7 Bc4 20.Bc4 Rc4 21.Qd1 Ne4 (21...Rd8 22.Qa1 Ne4 23.Bg7 Qd2 24.Bd4+–) 22.d3 Qd6? (better 22...Rb4!? 23.Qa1 Qd3 24.Bg7 Rfb8+–) 23.Rb7+– (23.dc4?! Qe7 24.Qd4 f5+–) 23...Nc3?? (23...Nc5 24.Rf7 Rf7 25.dc4 Qe7+–) 24.Qc2 Rc5 25.Bc3 Rfc8 (25...Qc6 26.Rb3+–) 26.Bb4 Qc6 (26...Rc2 27.Bd6 g5 28.Be5+–) 27.Bc5 Qb7 28.d4 1–0. Lavendel – Mexico, internet free game, 2018.

6.a4 a6

7.ba6 Na6=+ 8.Bd3 (8.Be2 0–0–/+) 8...0–0–/+ 9.0–0 Nc5 10.a5 (10.Ne5 Ra4 11.Nc3 Ra1 12.Qa1 Qc7–/+) 10...Nd3 11.cd3 Ra5 12.Ra5 Qa5 13.Bc3 (13.Qc2 c5–/+) 13...Qd8 (13...Qa6 14.Bf6 gf6 15.Qc2–+) 14.h3 (14.Qb3 b5–/+) 14...c5 (14...b5!? 15.Qc2–+) 15.Qb3–/+ Nd7 (15...Qd6 16.Bf6 Bf6 17.Nc3–/+) 16.Qb2 (16.Na3–/+) 16...Bf6 (16...Qb6 17.Bg7 Qb2 18.Bb2–/+) 17.d4 (17.Bf6 Nf6 18.Nc3 Qc7=+) 17...c4 18.Na3 Be7 (18...Qb6 19.Qb6 Nb6 20.Rb1=+) 19.Nc2 (19.Ra1 Nf6=+) 19...f6 (19...Re8 20.Ra1–/+) 20.Nh2 (20.Ra1 b6=+) 20...Qc7 21.f4 Bd6 (21...Nb8 22.Bb4–/+) 22.Na3 Qd8 (22...Ba3 23.Qa3 Re8 24.Nf3–/+) 23.Nb5=+ Be7 24.Qa2 (24.Nf3 b6=+) 24...b6 25.Bb2 (25.Nf3 Nb8–/+) 25...Bb7 26.f5 (better 26.Ba3!?–/+) 26...ef5–+ 27.Rf5 g6 (27...Qa8 28.Qa8 Ra8 29.Nc7–+) 28.Rf3 (28.Rf1 Qa8 29.Ba3 Qa4–+) 28...Bc6 29.Nc3 (29.Na7 Qc7 30.Nc6 Qc6–+) 29...Qa8 30.Qb1 Qb7 (30...f5 31.Ne2–+) 31.Qd1 (31.Ne2 b5–+) 31...b5 32.Rf1 (32.Ne2 b4–+) 32...b4 (32...Bd6 33.Ng4–+) 33.Ne2 Ra8 34.Ng4 (34.Nf4 Bd6–+) 34...Kg7 (34...f5 35.Nh2–+) 35.h4 (35.Nf4 f5 36.Ne5 Bb5–+) 35...h5 36.Nh2 Bd6 37.g4 Qc7 (37...hg4 38.Ng4 Bb5 39.Nf4–+) 38.Nf4 Bf4 39.ef4 Rh8 40.g5 f5 (40...Re8 41.Kg2–+) 41.Kg2 (41.Qe2 Qd6 42.Re1–+) 41...Re8 42.Kg3 (42.Re1 Re4 43.Re4 fe4–+ (43...de4?! 44.d5 Kf7 45.dc6 Qc6 46.Kg3=+)) 42...Qd6 (better 42...Bb5!? 43.Rf3–+) 43.Nf3 Re4 44.Ne5 Nb6 45.d3 cd3 46.Qd3 Na4?? (better 46...Nc4!? 47.Bc1 Bb5–+) 47.Qb3 (47.Ba1 Be8–/+) 47...Nb2–/+ 48.Qb2 Bb5 49.Rb1? (better 49.Ra1 Re3 50.Kf2 Re2 51.Qe2 Be2 52.Ra7 Kf8 53.Ra8 Ke7 54.Ra7 Ke6 55.Rg7–/+) 49...Re3–+ 50.Nf3 (50.Kf2 Re2 51.Qe2 Be2 52.Ke2 Qa6 53.Ke3 Qa3 54.Nd3 b3–+) 50...b3 (better 50...Qe7 51.Qa2 Be2–+) 51.Rg1 (51.Re1 Re1 52.Ne1–+) 51...Be2 52.Qe2 Re2 53.Ne5 (53.Ra1 b2 54.Ra2 Rc2 55.Ne5 Rc3 56.Kh2 b1Q 57.Ra7 Rc7 58.Rc7 Qc7 59.Nf3 Qcc2 60.Kg3 Qf1 61.Nd2 Qc3 62.Nf3 Qcf3 63.Kh2 Qf4) 53...Qc7 54.Kf3 (54.Nf3 b2 55.Rh1 Qc1 56.Rh2 Rh2 57.Kh2 Qc2 58.Kh3 b1Q 59.Kg3 Qf1 60.Nd2 Qc3 61.Nf3 Qcf3 62.Kh2 Qf4) 54...Rc2 (54...Ra2 55.Nc6 Qc6 56.Re1 Qc2 57.Re7 Kf8 58.Re8 Ke8 59.Ke3 Qe4) 55.Re1 (55.Kg3 b2 56.Rh1 Qc3 57.Nf3 Qe3 58.Rh2 Rh2 59.Kh2 Qf3 60.Kg1 b1Q 61.Kh2 Qbh1 mate) 55...Qc3 56.Re3 (56.Nd3 Qd3 57.Re3 Qf1 58.Kg3 Qg2) 56...Qe3! 57.Ke3 (57.Ke3 b2 Mate attack) 57...b2 58.Nf3 (58.Nd7 b1Q 59.Nc5 Qe1 60.Kf3 Qf2) 58...Rc3 (58...b1Q 59.Nd2 Qe1 60.Kf3 Qd2 61.Kg3 Qe3) 59.Kf2 (59.Kd2 Rc8 60.Ke2 b1Q 61.Nd2 Re8 62.Ne4 Re4 63.Kf2 Qe1 64.Kg2 Qd2 65.Kf3 Re3) 59...b1Q 60.Nd2 (60.Ng1 Qe4 61.Ne2 Rc2 62.Kg1 Re2 63.Kf1 Qg2) 60…Qd3 (60...Qd3 61.Nf3 Qf3 62.Ke1 Qe4 63.Kf2 Rc2 64.Kg3 Qe3) 0–1. Bulon,Jan – Stefanides,Karol, Open Oravska Priehrada, 2016.

7.c4 ab5 8.ab5 Ra1 9.Ba1 Bd7 10.Nc3 Qa5 11.Nd4 c5 12.Nf3 dc4 (12...0–0 13.Be2=) 13.Bc4 0–0 14.0–0 b6 (14...Bd6 15.Qc2=) 15.Ne5 (15.Qa4 Ne8+=) 15...Qb4 16.Be2 (16.Qa4 Bd6 17.Rb1 Qa4 18.Na4 Bc7+–) 16...Bc8 (16...Qh4 17.Nc4+–) 17.Qc2 (better 17.Nc4 Nd5 18.Nd5 ed5 19.Nb6+–) 17...Nfd7?? (17...Qh4 18.Qa4 Qh6 19.Ne4+=) 18.Rb1 (better 18.Nc4 Ne5 19.Ne5+–) 18...Qh4+= 19.g3 Qf6? (19...Qh6 20.Nc6 Bf6 21.Ne4 Ba1 22.Ne7 Kh8 23.Ra1+=) 20.Nc6 (20.Nd5 ed5 21.Nd7 Qd6 22.Nf8 Bf8+–) 20...Nc6 (better 20...Bd8!?+=) 21.bc6 Nb8? (21...Ne5 22.Na2+–) 22.c7 (better 22.Nd5! Qg5 23.Ne7 Qe7 24.Rb6+–) 22...Nd7 23.Nd5! Qg5 (23...ed5 24.Bf6 Discovered attack) 24.Qb2?? (better 24.Nb6 Bd6 25.Nd7 Bd7 26.f4+–) 24...ed5–+ 25.Bb5 Bf6 26.d4 cd4 27.ed4 Nc5! 28.Bf1 (28.dc5 Bb2 Pinning (28...Bb2 Deflection)) 28...Bf5 29.Qb6 Na4 (better 29...Bb1 30.Qc5 Rc8–+) 30.Qb8? (30.Qc6 Bb1 31.c8Q Rc8 32.Qc8 Bd8=+) 30...Bb1 (better 30...Qd2 31.Qb4 Qc2–+) 31.Qf8?? (better 31.c8Q Rc8 32.Qc8 Bd8 33.Qd7=+) 31...Kf8–+ 32.c8Q Bd8 33.Qa8 (33.Qc6 Nb6 34.Bc3 Qf6 35.Bb4 Be7 36.Qf6 gf6–+) 33...Nb6 34.Qb8 Ke8 (better 34...Qe7!? 35.Bc3 Qc7 36.Bb4 Kg8 37.Qc7 Bc7 38.Bc5–+) 35.Bb5 Kf8 36.Bf1 Bf5 37.Bc3 Ke8 (37...Qf6!? 38.Bb4 Kg8 39.Bg2–+) 38.Ba5 Qf6 39.Bb5 Bd7 40.Bd7 (40.Bb6 Qb6 (40...Bb5?! 41.Bd8 Qd8 42.Qb5 Ke7 43.Qe2 Kf8 44.Qh5=) 41.Qe5 Qe6 42.Bd7 Kd7 43.Qg7 h5–+) 40...Kd7 (40...Nd7?! 41.Qa8–+) 41.Qb7 Bc7 (better 41...Ke8 42.Bb6 Bb6 43.Qb8 Ke7 44.Qb7 Kf8 45.Qa8 Qd8 46.Qa3 Ke8–+) 42.Bb6 Qb6 43.Qd5 Kc8 (43...Ke7 44.Qe4 Kf8 45.h3–+) 44.Qf7 Qd4 45.Qe8 (45.Qg8 Kd7 46.Qh7 Be5–+) 45...Qd8 (45...Kb7 46.Qf7–+) 46.Qe6 Kb8 47.Qb3 Bb6 48.Qf7 Qc7 (48...Bd4 49.Kg2–+) 49.Qe8 (49.Qg8 Kb7 50.Qh7–+) 49...Ka7 50.Qa4 Ba5 51.Qa1 g6 0–1. GuestLJTQ – mfo, freechess.org, 2017.

7.c4 dc4 8.Bc4 0–0 9.Nc3 Nd5 (9...b6 10.0–0=) 10.0–0 cb5 (10...b6 11.Qb3=) 11.ab5 Nb6 (11...Nb4 12.d3+=) 12.Bb3 (12.Be2 Bd7+=) 12...Bd7 13.Qe2 Bf6 (13...Bb4 14.ba6 ba6 15.Rfb1+=) 14.d4 Be8 (14...ab5 15.Nb5 Bc6 16.Ne5+=) 15.Rfd1 (better 15.Bc2+–) 15...Nd5 (better 15...Bb5!? 16.Nb5 ab5 17.Qb5 Ra1 18.Ra1 Qc7+–) 16.Bd5+– ed5 17.Ba3 ab5 (better 17...Be7 18.Be7 Qe7 19.ba6 Ra6 20.Nd5 Qd6+–) 18.Bf8 Ra1 19.Ra1 Kf8 20.Nb5 (20.Ra8 Bc6+–) 20...Qb6 (20...Na6 21.Rc1+–) 21.Nc3 Bc6 22.Ra8 Qc7 (22...Qd8 23.Qd3 Kg8 24.Ne5 Be5 25.de5+–) 23.Qc2 Ke7 (23...Be8+–) 24.Nd5! (24.Nd5 Kd8 25.Nc7 Kc7 26.d5+–) 1–0. Janek – Poussis, internet, 2017.

6.a4 cb5

7.ab5 0–0 8.c4 dc4 9.Bc4 b6 10.Qe2 Bb7 11.0–0 Nbd7 12.Rc1 Nc5 13.Ne5 Rc8 (13...Bd6!?+=) 14.d4 Ncd7 15.Ra7 Rc7 16.Nc6 (16.Rb7 Rb7 17.Nc6 Qe8+–) 16...Bc6+– 17.Rc7 Qc7 18.Bd3 Nb8 19.bc6 Nc6? (better 19...Nd5+–) 20.Bb5+– 1–0. pcmvr – ajmcroberts (2270), net–chess.com, 2014.

7.ab5 b6 8.Bd3 0–0 9.0–0 Nbd7 10.c4 (10.Nd4 Qc7+=) 10...Nc5 (10...a5 11.cd5 ed5 12.Nc3=) 11.Be2 a6 (better 11...a5!?=) 12.d4+– Nce4 13.cd5 Nd5 14.Bd3 Nd6 (14...f5 15.ba6 Nb4 16.Nc3 Ba6 17.Ra6 Ra6 18.Ba6 Nc3 19.Qb3+–) 15.ba6 Nb4 16.Ne5 Nd3 (16...Ba6 17.Ba6 Na6 18.Qb3+–) 17.Qd3 (worse 17.Nd3 Ba6 18.Qc2 Qd7=+) 17...Qc7? (better 17...b5 18.a7 Bb7+–) 18.Rc1+– Qa7 19.Nc6 Ba6 (19...Qd7 20.Nd2+–) 20.Ne7 Kh8 21.Nc6 Bd3 22.Na7 Bb1 1–0. GuestCMGY – GuestMGMX, freechess.org, 2019.

7.ab5 Bd7 8.c4 0–0 9.Nc3 Bb4 10.Be2 (10.Qb3 Qe7+–) 10...Bc3 (10...dc4!? 11.Bc4 a5+–) 11.Bc3+– Ne4 (11...dc4 12.Bc4 Ne4 13.Bb4+–) 12.Bb4 Re8 13.0–0 b6 (13...Qc7 14.cd5 ed5 15.Qb3+–) 14.d3 Ng5 (14...Nc5 15.d4 Ne4 16.Nd2+–) 15.Nd2 dc4 (15...f6 16.Qb3+–) 16.Nc4 Bb5 (16...a5 17.Nd6 f6 18.Qb3+–) 17.Nd6 Bc6 (17...Nc6 18.Ba3 (18.Nb5?! Nb4 19.h4 a6+–) 18...e5 19.Nb5+–) 18.Ne8 Qe8 19.f4 Nh3 20.gh3 e5 (20...a5 21.Ba3+–) 21.e4 ef4 22.Rf4 Qe5 23.Bd2 Nd7 24.Rc1 Bb7 (24...Nc5 25.Be3 Qg5 26.Kf2+–) 25.Qf1 (better 25.Qb3 Nf6 26.Qc3 Qc3 27.Rc3+–) 25...Nf6 (25...Qd6+–) 26.Bc3 Qc5 27.Kh1 Qe3 (27...Qe7 28.Rf6 Rc8+–) 28.Bf6 gf6 29.Rg4 Kf8 30.Rc7 Ba6 31.Qf6 Bc4 (31...Qc1 32.Rc1 Bb7 33.Qd6 Ke8 34.Rg8) 32.Qh8 (32.Qe7) 1–0. GuestWXLK – GuestRZNT, freechess.org, 2019.

6.a4 c5

7.c4 b6 8.Be2 0–0 9.0–0 Nbd7 10.d4 Bb7 11.Nbd2 Rc8 12.a5 Ne4 (12...cd4 13.Nd4 Qc7 14.Qc2=) 13.ab6 ab6 14.Ne4 de4 15.Ne5 Ne5 16.de5 Qd1 17.Rfd1 Rfd8 18.Ra7 Rd1 19.Bd1 Rb8 20.Bc2 Bf8 21.h3 h6 22.Kh2 Kh7?? (better 22...Be7+=) 23.Rb7!+– Ra8 (23...Rb7 24.Be4 Double attack (24.Be4 Decoy)) 24.Rb6 Ra2 25.Be4 Kg8 (25...g6 26.Bc3 Ra3 27.Bd2+–) 26.Bc3 Rf2 (26...Ra4 27.Rc6 Ra3+–) 27.Ra6 Re2 28.b6 Re3 29.b7 Rc3 30.b8Q Rc4 (30...g5 31.Ra8 Rh3 32.gh3 f5 33.ef6 Kf7 34.Qf8) 31.Ra8 Re4 32.Qf8 Kh7 33.Qf7 c4 (33...Rf4 34.Qf4 Kg6 35.Rg8 Kh7 36.Qf7 c4 37.Qg7) 34.Ra7 (34.Ra7 Rg4 35.hg4 c3 36.Qg7) 1–0. DEFFM – Krrak, freechess.org, 2019.

7.Be2 a6 8.c4 ab5 9.ab5 Ra1 10.Ba1 b6 11.cd5 (11.d4 0–0=) 11...ed5 12.Qc2 0–0 13.0–0 Bg4 14.Bf6 Bf6 15.Ng5 Bg5 16.Bg4 Nd7 (16...Bf6 17.Bf3=) 17.Qf5+= (17.Qf5 Nb8 18.Nc3=). pcmvr (2840) – tomy (2305), net–chess.com, 2009.

6.c4 0–0

7.Nc3 =+.

7.Ne5 =+.

6.c4 cb5

7.cb5 Bd7 8.Be2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 0–0 12.Nc3 Qb6 (12...Qc7 13.0–0=) 13.0–0 Bb4 14.Qb3 Bc3 (14...Be7 15.Na4 Qd6 16.Be5+=) 15.Bc3+/– Ne4 16.Bd4 Qa5 17.Qb2 f6 18.Ra1 (18.d3 Nd6 19.Bc5 Nb5 20.Bf8 Kf8+/–) 18...Qd8 (better is 18...Qc7!?+/–) 19.d3+– Nd6 (19...e5 20.de4 ed4 21.Qd4 de4 22.Bc4 Kh8 23.Qe4+–) 20.Bc5 Qc7 (20...Nb5 21.d4 Qe8+–) 21.Qb4 Nb5 (21...Bb5 22.Bd6 Nc6 23.Qa3+–) 22.Bf8 Na6 23.Qe7 Nc3 (23...Bc6+–) 24.Qg7 1–0. Fredek (2090) – Guest134826, Freundschaftspartie, 5m + 0s, 2006.

7.cd5 0–0 8.Bb5 (8.de6!? Be6 9.Bb5=) 8...Nd5= 9.0–0 a6 (9...Bd7 10.Be2=) 10.Be2 Nc6 (10...b5 11.a4 b4 12.d4=+) 11.a3 (11.Qc2 Ncb4 12.Qb3 b5=) 11...Bf6 (11...b5 12.d4=+) 12.Bf6 (12.Qb3 e5 13.d4 ed4=+) 12...Qf6 (< 12...gf6 13.d4+=) 13.d4 Rd8 14.Qc2 Bd7 (14...e5 15.Bd3=) 15.Nbd2 Qe7 (15...e5 16.Qb3 Bg4 A) 17.Qb7? Rdb8 (17...ed4?! 18.Nd4 Be2 19.Ne4=+) 18.Ba6 Rb7 19.Bb7 Ra4–+; B) 17.de5 Ne5 18.Rac1=) 16.Qb2 Rab8 (16...b5 17.Rfc1+=) 17.Rfc1 Rdc8 (17...b5 18.Ne4+=) 18.Ne4 Be8 (18...Rc7 19.Nc5+/–) 19.Nc5+/– Qc7 (19...a5 20.Rab1+/–) 20.Rab1 Nf6 21.Ne5 Ne5 22.de5 Nd7 23.Nd7 Qd7 24.Rc8 Rc8 25.Rd1 Qc7= 26.Qd4 b5 27.f4 Bc6= 28.Qd6 g6 29.Qc7+/– Rc7 30.Rc1 Rc8 31.Bf3 Bd7 32.Rc8 Bc8 33.Bc6 Kf8 34.Kf2 Ke7 35.Ke1 Kd8 36.Kd2 Bd7 37.Bb7 a5 38.Kc3 Kc7 39.Bf3 Kb6 40.g3 Kc5 41.Kb3 Bc6=+ 42.Bd1 Bd5 43.Kc3 b4 44.ab4 ab4 45.Kb2 Bc4 46.Ba4 Bb5 47.Bb3 Bc6 48.Bd1 h6 49.g4 Be4 50.Ba4 Bf3 51.Be8 Bg4 52.Bf7 Bf5 53.e4= Be4 54.Be6 Kd4 55.Bf7 g5 56.fg5+= hg5 57.e6 Bd5 58.Bg8 Ke5?? 59.e7+/– Bc6 60.Bf7 g4 61.e8Q Be8= 62.Be8 Kf4 63.Bc6 Ke3 64.Kb3 Kf2 ½–½. Turcot,Jean – Filiatreault,Michel, Khalif Charlesbourg CAN, 2005.

7.cd5 a6 8.de6 Be6 9.Nd4 =.

7.cd5 Qd5 8.Nc3 Qd6 (8...Qd8 9.Bb5 Bd7 10.Rc1=) 9.Bb5 (9.Nb5 Qd8=) 9...Bd7 10.Qc2 (10.a4 Nc6=) 10...0–0 11.Rc1 (11.Qd3 Rc8=+) 11...a6 (11...Rc8 12.Qb3=+) 12.Bd3= h6 (12...Rc8 13.Ng5 g6 14.Nge4 Ne4 15.Be4=) 13.Ne4 Ne4 14.Be4 Bc6 15.0–0 Be4 16.Qe4 Nc6 17.Qg4 e5 18.Rc2 Bf6 (18...Rfd8+=) 19.Qg3 (19.d4 ed4 20.Nd4 Bd4 21.Bd4 Nd4=) 19...Rad8 (19...Rfd8 20.Rfc1=+) 20.e4 (20.Rfc1=) 20...Nb4 (better is 20...Qd3 21.Rcc1 Qe4=+) 21.Ba3+/– Rc8 22.Rfc1 Rc2=+ 23.Rc2 Qd3 24.Rc3 Qe4 25.h3 Na2 26.Re3+= Qb1 27.Re1+/– Qb5 28.Bf8 Kf8 29.Ne5 Be5 30.Qe5 Qe5+= 31.Re5 f6? 32.Rc5 b5+/– 33.d4 Ke7 34.Rc7 Kd6 35.Rg7+– Kd5 36.Rd7 Kc6 37.Rd8 Nb4 38.f4 a5 39.Kf2 Nd5 40.Kf3 b4 41.Ke4 Nc3 42.Kf5 Nd5 43.g3 b3+= 44.Ke6?? a4?? 45.Rc8?? Nc7–+ 46.Ke7 b2 47.d5 Kb7 48.d6?? Kc8 49.d7 Kb7 50.d8Q b1Q 51.Kf6 a3 52.Qd4 Qb2 53.Qe5 Qe5 54.Ke5 a2 (55.Kf5 a1Q–+) 0–1. Perez,Norman – Portocarrero,Keny, PER–ch Regional Sur, 2002.

6.c4 dc4

7.Bc4 0–0 8.0–0 cb5 9.Bb5 Qb6 10.Qb3 Ne4 11.Bc4 Qb3= 12.Bb3 Nc6 13.d3 Nc5 14.Bc2 Nb4–/+ 15.Na3 Ncd3 16.Bc3 Nc2 17.Nc2 b6 18.Rfd1 Ba6 19.Nce1 Rad8 20.Nd3–/+ Rd3 21.Rd3 Bd3 22.Rd1 Bb5 23.Nd4 Ba4 24.Rd2 Rc8 25.Bb2 Bf6 26.Ne2 Bb2 27.Rb2 Rc2 28.Rc2 Bc2 29.Kf1 Bd3 30.Ke1 Be2 31.Ke2 Kf8 32.Kd3 Ke7 33.Kc4 Kd7 34.Kb5 Kc7 35.a4 e5 36.e4 f6 37.f3 h5 38.Ka6–/+ Kb8 39.g3 g5–+ 40.h4 gh4 41.gh4 Ka8 (42.Kb5 Kb7–+) 0–1. Hasler,Ueli – Cane,Luisito, 8.CH/3 CiF, 2002.

7.Bc4 0–0 8.a4 cb5 9.ab5 b6 10.Nc3 Bb7 11.0–0 Nbd7 12.d4 Ne4 13.Ne4 Be4 14.Nd2 Bg6 15.Qf3 Nf6 16.Ra4 Bd6 17.Rc1 Qe7 18.d5 (18.e4 Qd7+=) 18...ed5 (18...Nd5!? 19.Bd5 ed5 20.Qd5 Rfd8=) 19.Bf6+= Qf6 (19...Qc7!? 20.Qd5 Bh2 21.Kh1 gf6+=) 20.Qf6+/– gf6 21.Bd5 Rac8 22.Bc6 Rfd8 23.Nf3 Bb8 24.g3 Bd3 25.Rg4 Kh8 26.Nd4 (26.Rd4 a5+/–) 26...Rg8 (better is 26...Be5!?+=) 27.Rg8+/– Kg8 28.Rd1 Bc4 29.Nf5 Kf8 30.Rd4 Be6 31.e4 Be5 32.Ra4 Rc7 33.f4 Bb2 34.Nd4 Bd4 35.Rd4 Ke7 36.Kf2 Bc8 37.Rd5 a6 38.Rh5 a5 39.Bd5 (39.Rh7 a4 40.Bd5 Be6 41.Be6 Ke6+/–) 39...Be6 40.Be6 Ke6 41.Rh7 Rc5 42.Rh8 Rb5 43.h4 Rb2 44.Ke1 a4 45.Kd1 b5 46.h5 Rh2 47.Kc1 Rh3 48.h6 Ke7 (48...Rg3? 49.h7 Rc3 50.Kb1+–) ½–½. Schaefer,Juergen – Adlhoch,Baerbel, Wuerzburger op 5th, 1989. (=1.Nf3 d5 2.b4 e6 3.Bb2 Nf6 4.b5 c6 5.e3 Be7)

7.Bc4 0–0 8.Nc3 cb5 9.Bb5 Bd7 10.Be2 Nc6 11.0–0 a6 12.d4 b5 13.Ne5 Bd6 14.f4 Nb4 15.e4 Be7 16.Bf3 Qb6 17.Kh1 Nc6 18.Ne2 (18.Nd7 Nd7 19.d5 ed5 20.Nd5 Qb7+/–) 18...Rad8 19.Rc1 h6 20.Qd2 Be8 d4 becomes the focus of attention 21.Rfd1 Nh7 (21...Nb8!?+=) 22.d5+/– ed5 23.ed5 Na5?? (better is 23...Ne5 24.Be5 Ba3+/–) 24.Bd4+– Qd6 25.Qa5 Qb4 26.Qa6 Nf6 (26...Qa3 27.Qb6 Nf6 28.Bc5 Bc5 29.Qd8+–) 27.Nc6 (better is 27.Bb6!? Rd6+–) 27...Bc6 28.dc6 Ra8 29.Qb7 (29.Qb6!? Rab8 30.Qc7 Bd6+–) 29...Rfb8 30.c7 Rb7 31.c8Q Rc8 32.Rc8 Kh7 33.Bb7 Qa5 34.Rdc1 (better is 34.Ra8!? Qc7 35.Ba6 Qc6+–) 34...Qa2 35.Bf6 (better is 35.Nc3!? Qa5+–) 35...Bf6 36.Be4 g6 37.Ng3 Kg7 (37...b4 38.f5 Qa3 39.fg6 fg6 40.Nh5+–) 38.Rb8 (38.f5 Be5 39.fg6 Bg3 40.gf7 Kf7 41.hg3 Qa5+–) 38...Qd2 39.Rb1 Qf4 40.R8b5 Bh4 41.Rf1 Qd6 (41...Qd2 42.Rb7 Qa2 43.Bb1+–) 42.Rb7 (better is 42.Bd5!? h5 43.Ne4 Qa6 44.Rf7 Kh6+–) 42...Be7 43.Bc2 h5 (43...Qe5+–) 44.Bb3 Kh6 (44...Kh6 45.Rf7 Qd3 46.Rbe7 Qb1 47.Nf1 h4+–). Kuzmenko,Anton – Abdrakhmanova,Sara (2020), Ufa op, 2006.

7.Bc4 cb5 8.Bb5 Bd7 9.Nc3 a6 10.Bd7 Nbd7 11.0–0 0–0 12.d4 b5 13.Nd2 Nb6 14.Rc1 Rc8 15.Qe2 Nc4 16.Nb3 Qd7–/+ 17.Nb1 Rc7 18.Rfd1 Rfc8 19.Ba1 Qd5 20.Nc3 Qb7 21.Qd3 Ba3 22.Rb1 Bb4 23.Ne2 a5 24.Bc3 Ne3 25.fe3+= Bc3 26.Nc5 Qa8?? 27.Nc3+– (27...b4 28.N3a4+–) 1–0. Schiffler – Haupt, Schneeberg, 1950.

7.Bc4 cb5 8.Bb5 Bd7 9.Nc3 a6 10.Be2 Nc6 11.a3 0–0 12.0–0 h6 13.d4 b5 14.Rc1 Rc8 15.d5 ed5 16.Nd5 Nd5 17.Qd5 Qe8 18.Rfd1 Be6 19.Qe4 Bd8 20.Bd3 f5= 21.Qf4 Bc7 22.Qh4 Bd8 23.Qf4 Bc7 24.Qh4 Bd8 25.Qg3 g5 26.h4 Bc7=+ 27.Ne5 f4?? 28.ef4+/– Ne5 29.fe5 Rf4 30.hg5+– Rg4 31.Qh2 h5 32.Bb1 Bb6 33.Rc8 Bc8? 34.Rd6 Bc7 35.Rg6 Kf8 36.Rf6 Ke7 37.Ba2 (37...Qd8 38.Rf7 (38.Qh5 Qd1 39.Kh2 Rg2 40.Kg2 Qh5 41.Rf7 Ke8 42.Rc7 Bh3 43.Kh2 Bf5 44.Kg1 Qg4 45.Kh2 Qh3 46.Kg1 Be4 47.Rc8 Kd7 48.e6 Kc8 49.f3 Qg3 50.Kf1 Bd3) 38...Ke8 39.Bb3+/– (39.Qh5 Qd1 40.Kh2 Rg2 41.Kg2 Qh5 42.Rc7 Bh3 43.Kh2 Bf5 44.Kg1 Qg4 45.Kh2 Qh3 46.Kg1 Be4 47.Re7 Ke7 48.f3 Qg3 49.Kf1 Bd3); better is 37.Bg6 Qg8 38.Qh5+–) 1–0. Gross,Wilhelm – Merten,Rainer, 1986.

6.Be2 0–0

7.0–0 cb5 8.Bb5 Qb6 9.a4 a6 10.Bd4 Qc7 11.Be2 Nc6 12.Bb2 Bd7 13.d4 Bd6 14.Nbd2 Ng4 15.h3 Nf6 16.c4 b6 17.Bd3 h6 18.Qe2 Nb4 19.cd5 Nd3 20.Qd3 Nd5 21.Rfc1 Qb7 22.Nc4 Be7 23.Qb3 Nb4 24.Nfe5+= Bc8 25.a5 Qd5 26.ab6+– Bb7 27.Nf3 Qf5 28.Ra5 Bd5 29.Rc5?? Qg6?? 30.Rc7?? Bf3–+ 31.g3 Bd5 32.Re7 Qe4 33.f3 Qf3 34.e4 Qb3 35.ed5 ed5 36.b7 Rab8 37.Nd6 Qg3 38.Kf1 Qd6 39.Rcc7 Qf6 (40.Kg1 Nd3–+; 39...Qf4 40.Kg2 Nd3 41.Bc1 Qf2 42.Kh1 Nc1 43.Rc1 Qf3 44.Kg1 Qg3 45.Kf1 Qf4 46.Kg2 Qg5 47.Kh2 Qe7 48.Rc3 Qe2 49.Kg3 Qe1 50.Kg4 f5 51.Kf3 Qc3 52.Ke2 Rfe8 53.Kf2 Qe1 54.Kf3 Re2 55.Kf4 Qf2#) 0–1. Wooten,John – Wall,Bill, Winston–Salem, NC, 1978.

7.0–0 cb5 8.Bb5 Nc6 9.a3 =+.

7.0–0 cb5 8.Bb5 Nc6 9.Qe2 =.

7.0–0 Nbd7 8.c4 cb5 9.cb5 a6 10.Nc3 =.

7.0–0 Nbd7 8.c4 cb5 9.cb5 b6 10.d4 a6 11.Nc3 ab5 12.Nb5 Ne4 13.a4 Ba6 14.Qb3 f5 15.Ba3 Rc8 16.Rfc1+= Ba3 17.Qa3 Qf6 18.Bd3 f4 19.Rc8 Rc8 20.Be4 de4 21.Nd2 Bb5 22.ab5 Qf5 23.Qd6 Nf6 24.Qf4 Qb5 25.Ne4+/– Ne4 26.Qe4 Qc4 27.g3 b5 28.Rb1 Rf8+/– 29.Qe5 Qa2 30.Rf1 b4 31.Qe4 Qc4 32.Qb1 b3+= 33.Rc1 Qe2= 34.Rf1 b2 35.Qd1?? Rf2!! 36.Qe2 Re2 (37.Rb1 Rc2 38.Rb2 Rb2–+) 0–1. Abascal Vicente,I – Perez de Villar,I, Barcelona ESP, 2004.

7.0–0 Nbd7 8.c4 Ne8 9.bc6 bc6 10.Qc2 Bf6 11.d4+= Rb8 12.Nbd2 h6 13.Ba3+/– Be7 14.Be7 Qe7 15.Rfb1 Nd6 16.Rb8 Nb8 17.c5 Ne8 18.Rb1 Nd7 19.Qa4+– Ndf6 20.Ne5 Ne4 21.Ne4 de4 22.Qc6 Nf6 23.Rb8 Qd8 24.Ba6 Qa5 25.Rc8 Qe1 26.Bf1 Qa5 27.Nc4 Qa2 28.Rf8 (28...Kf8 29.Qc8 Ne8 30.Nd6+–) 1–0. Valverde,Mario (1995) – Hasler,Ueli, CiF, 2006.

5.Nf3 Bd7

6.a4 a5 7.c4 (7.Be2 0–0=) 7...dc4 8.Bc4 Bb4 (8...0–0 9.0–0=) 9.0–0 b6 (9...c6 10.Ne5+=) 10.Nc3 (10.Ne5 c5+=) 10...Qe7 (10...c6 11.Ne5+=) 11.d4 (11.Ne5 Qd6 12.Nd7 Nbd7+/–) 11...0–0+= 12.Qe2 c6 13.e4 (13.Ne5+=) 13...c5 (13...Rc8!? 14.Rac1 Ra7+=) 14.e5+/– Ng4? (14...Nh5 15.Qe4 Ra7 16.d5+–) 15.d5 (15.Qe4 cd4 16.Qd4 (16.Qa8 dc3 17.Bc1 Nc6=) 16...Nf2 17.Qf4+– (17.Kf2 Bc5 18.Ne4 Bd4 19.Bd4 Qb4–/+)) 15...ed5 16.Nd5 Qd8 17.Nb4 ab4 18.e6 fe6 (18...Be6 19.Be6 Nh2 20.Nh2 (20.Kh2?! Qd6 21.Ne5 Qe6+–) 20...fe6 21.Qe6 Rf7 22.Nf3+–) 19.Qe4 (19.Be6?! Kh8+/–) 19...Nc6 (19...Nh2 20.Kh2 Ra5+–) 20.bc6 Be8 (20...Nh2 21.Nh2 Bc8 22.c7+–) 21.Be6 Kh8 22.Bg4 (22.c7 Qc7 23.Qa8 Qf4+–) 22...Bg6 23.Qe5 Ra7 (23...Rf7 24.Be6 Re7 25.Rad1+–) 24.Bd7 Rf7 25.Rfe1 Rf6 (25...Qf8 26.Qg3 Rf4 27.Ng5+–) 26.Ng5 Rd7 27.cd7 Qd7 28.Qb8 Be8 29.Qe8 (29...Qe8 30.Re8 Rf8 31.Rf8#) 1–0. Fredek (2090) – Guest32098, Freundschaftspartie, 5m + 0s, 2005.

6.a4 h6 7.c4 (7.Be2 0–0=) 7...dc4 (7...a6 8.Nc3=) 8.Bc4 c6 9.Nc3 cb5 10.ab5 b6? (better 10...0–0+=) 11.Ne5+– 0–0? (better 11...a5 12.ba6 0–0+–) 12.Qf3 (12.Nd7?! Nbd7 (12...Nfd7? 13.Qf3 Ne5 14.Qa8 Nc4 15.Bc1+–) 13.d4 Bd6+=) 12...Nc6 (12...Qc7 13.Qa8 Nc6 14.Qf8 Bf8 15.bc6 Bc6+–) 13.bc6 (worse 13.Nc6 Bc6 14.bc6 a5+–; worse 13.Nd7 Nd7 14.bc6 Ne5+–) 13...Be8 14.d4 (14.c7 Qc8 15.Ba6 Qc7 16.Qa8 Bd7+–) 14...Qc7 15.0–0 (better 15.Ba6 Bb4 16.0–0 Bc3 17.Bc3 Nd5+–) 15...Bd6 (15...Rc8 16.Ba6 Bc6 17.Nc6 Qc6 18.Bc8 Qf3 19.gf3 Rc8 20.Ra7 Bd6+–) 16.Nb5 Qe7 17.Nd6 Qd6 18.Ra6 Nd5 19.Ba3 Qa3 (19...Nb4 20.Rb1 Bc6+–) 20.Ra3 1–0. DEFFM – GuestQQZH, freechess.org, 2018.

6.c4 0–0 7.Nc3 a6 8.a4 c6 9.Be2 dc4 10.ba6 Na6 11.Bc4 Qc7 12.0–0 Ra7 13.Qc2 Nb4 14.Qb3 Nbd5 15.Nd5 ed5 16.Be2 Rfa8 17.Be5 Qc8 18.Rfc1 Ne4 19.Bd4 c5 20.Bb5 Bb5 21.ab5 Ra1 22.Ba1 c4 23.Qb1 Ra3 24.Qb2 f6 25.Ne1 Rb3 26.Qb3 1–0. Lehr,Thomas – Weidmann,Joachim, Koblenz, 1999.

6.c4 a6 7.cd5 ed5 8.Qb3 =+.

6.d4 c6 7.a4 cb5 8.ab5 a6 (better 8...Qb6!? 9.Qd3 0–0=) 9.Bd3 (better 9.c4+–) 9...ab5?? (better 9...Bb4 10.Nbd2 Qb6+=) 10.Ra8+– Bd6 (10...0–0 11.0–0+–) 11.0–0 0–0 12.Nbd2 Bc6 (12...Qc7 13.Qe2+–) 13.Ne5 (13.Qe2 Qb6+–) 13...Be5 (13...Qc7 14.Qe2+–) 14.de5 Ne4 15.Be4 de4 16.Ba3 Re8 (16...b6 17.Ra7 Re8+–) 17.Bd6 Qg5 (17...Qd7 18.Rb8 Rb8 19.Bb8+–) 18.Rb8 Rb8 19.Bb8 f6 (19...h6 20.Qe2+–) 20.ef6 Qf6 (20...gf6 21.Nb3 Qd5 22.Qg4 Kf7 23.Nd4+–) 21.Qg4 Bd5 22.Ne4 Qf8 23.Be5 Be4 24.Qe4 b6 25.Ra1 Qc5 (25...Qc8 26.Ra7 Qf8 27.Qg4 Qf2 28.Kf2 g6 29.Qe6 Kf8 30.Qf7) 26.Ra8 Kf7 (26...Qc8 27.Qb7 Qf8 28.Qg7) 27.Qf3 Kg6 28.Qg4 Kh6 29.Qg7 (29.Bg7) 29...Kh5 30.Qh7 Kg5 (30...Kg4 31.Rg8) 31.Rg8 1–0. DEFFM – lionjoshi, freechess.org, 2019.

6.Be2 0–0 7.0–0 c6 8.a4+= c5 9.c4 a6 (9...Be8 10.d4 (10.Qc2+/– a6 11.d4 Nbd7 12.cd5 Nd5 13.Nc3 Nb4 14.Qb3=) 10...Nbd7 11.a5 a6 12.b6 Rc8 13.Nbd2 cd4 14.Bd4+=) 10.Nc3 (10.Na3 dc4 (10...Be8+= 11.d3 Nbd7 12.Qc2 Bd6 13.cd5 ed5 14.Rfc1+=) 11.Qc2 b6 12.Ng5 Re8 13.Nc4 h6 14.Ne4=; 10.d4 ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 Qa5 14.Qb3+=) 10...ab5 (10...b6 11.d4 dc4 12.dc5 Bc5 13.Bc4 Qc7 14.Qe2+=) 11.cb5 (11.ab5 Ra1 12.Qa1 Qb6 (12...Bc8+= 13.d3 Bd6 14.e4+=) 13.Qa2 dc4 14.Qc4=) 11...b6 (11...Be8 12.Qc2= Nbd7 13.d4 Qa5 14.dc5=; 11...Qa5 12.Qc2 Bd6 13.Ng5 h6 14.Nf3+=) 12.Ne5 (12.a5 Ra5 (12...ba5) 13.Ra5 ba5= 14.Qa4+=; 12.d4 c4 13.Ne5 Bb4 14.Qc1=) 12...Qc7= 13.f4 Be8 (13...Bd6 14.Bf3=) 14.Bd3 (14.Bf3 Nfd7+=; 14.Rc1=) 14...Nbd7= 15.Ne2 (15.Nc6 Bd6=) 15...Ne4 (15...c4 16.Bc2+=) 16.Be4= de4 17.Nd7 (17.Nc4!?=) 17...Qd7 (17...Bd7 18.Qc2 Qb7 19.Ng3=) 18.Qc2 f5 19.Rad1 (19.Rfb1 Qd5+=) 19...Bf6 (better is 19...Rd8!? 20.Ng3 h5–/+) 20.Bf6= Rf6 21.d4 ed3 22.Rd3 Qb7 (22...Qe7 23.Rfd1=) 23.Rd6+= Qc7 (23...Rb8 24.Qc4+=) 24.Rfd1 h5 (24...Qa7 25.Nc3+=) 25.Nc3 (25.e4 Rg6+/–) 25...Rc8 (25...Qb7 26.g3+/–) 26.R1d2 Kh8 27.Qd1 g6?? 28.Qa1+– Kh7 29.Ne4!! Rf8 30.Ng5 Kh6 31.Ne6 Qe7 32.Nf8 Qf8 33.Qe5 c4 34.Rf6 Qb4 35.Rfd6 (35.Rfd6 Bf7 36.Qf6+–) 1–0. Plock,Joerg – Trapp, 1996.

6.Be2 c5 7.c4 0–0 8.0–0 b6 9.Ne5 h6 (9...a6!?+=) 10.Nc3 Be8 (10...a6 11.cd5 ed5 12.d4+=) 11.Qc2+– a6 12.a4 ab5 13.ab5 Ra1 14.Ra1 (worse 14.Ba1 Bd6 15.f4 Nbd7+–) 14...Bd6 15.f4 dc4 (15...Qc7 16.Qb1+–) 16.Nc4 (16.Bc4?! Be5 17.fe5 Ng4+=) 16...Qc7 (better 16...Bc7+–) 17.Ne4 Ne4 (17...Be7 18.Be5 Qd8 19.Ra8+–) 18.Qe4 Nd7 (18...Bd7+–) 19.Bd3 g6 20.Qc6 Qc6 (20...Bf4 21.ef4 Qf4 22.g3+–) 21.bc6 Nb8 22.Nd6 Bc6 23.Ra7 Rd8 24.Rc7 (24.Rc7 f6 25.Rc8 Rc8 26.Nc8+–) 1–0. Pierre – Ostervall, internet, 2019.

6.Ne5 c6 7.c4 Qb6 (7...0–0 8.cd5 (8.Nc3 dc4 9.a4 cb5 10.ab5+=) 8...ed5 9.Be2 Bf5 10.0–0+=; 7...dc4 8.bc6 (8.Qf3 Qc7 9.Bc4 cb5 10.Be2+=) 8...Nc6 9.Nd7 Qd7 10.Bc4+=) 8.Nd7 (8.cd5 ed5 9.Nc3 0–0 10.Bd3=; 8.a4 0–0 9.Be2 cb5 10.cb5=) 8...Nbd7 9.cd5 (9.Nc3 0–0 10.bc6+=) 9...ed5 (9...cd5 10.Be2+=) 10.Nc3 c5 11.Qf3 Qe6 12.Be2 0–0 13.0–0 Ne5 14.Qf4 Bd6 15.Qa4 c4 16.f4 Ned7 17.Qd1 Nc5 18.Qc2 Nfe4 19.Rf3 f5?? (19...Nc3 20.Bc3 a6 21.b6=) 20.Raf1?? (better is 20.Nd5 Nd3 21.Bd3 cd3 22.Qd3=) 20...Rf6?? (better is 20...Rf7+=) 21.Nd5!+– Qd5 22.Bc4 Qe6 23.Bf6 Nf6 24.Be6 Ne6 25.Qf5 Nc5 26.Rc1 Nfe4 27.Rh3 g6 28.Qd5 Kg7 29.d4 Nd3 30.Qb7 Kf6 31.Rh7 Rf8 32.Rc6 Kf5 33.Qd7 Kf6 34.Rd6 Nd6 35.Qd6 (35.Qd6 Kf5 36.Qd5 Kf6 37.e4 Nf4 38.Qe5 mate) 1–0. Radwan,Jan (1690) – Borkowski,Jozef (1740), Ogolnopolski Turniej Niepelnosprawnych Poland, 2011.

6.Nf3 c6 7.a4 a6 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 cb5 11.Nc3 (11.Bd3 0–0=+) 11...b4 12.Nb5 Qa5 13.Nd7 (13.Nd4 0–0=+) 13...Nbd7 14.Be2 0–0 15.0–0 Ne4 16.Nd4 Bf6 17.g4 (17.Nb3 Qc7–/+) 17...h6 18.Nb3 Qc7 19.Bd3 Ba1 20.Qa1 Ndc5 21.Nc5 Nc5 22.Be2 Ne4 23.Qc1 (23.Qd1 Ra8–/+) 23...Rc8 24.Bd3 Nc5 25.Qb2 Nd3 (25...b3 26.Be2 bc2 27.Qc2–+) 26.cd3–/+ Qc2 27.Qb4 Qd3 28.Qb7 Rc2 29.Rf2 (29.Qb4 Qe2 30.f5 ef5 31.gf5 Rc4 (31...Qd2?! 32.Qd2 Rd2 33.Rf4–+) 32.Qb8 Kh7–+) 29...Rd2 30.Rd2 Qd2 31.Qb3 (31.Qa8 Kh7 32.Qa7–+) 31...Qe1 (better is 31...Qe2!?–+) 32.Kg2–/+ Qe2 33.Kg3 Qe1 (better is 33...Qf1 34.h3 Qg1 35.Kf3 Qh2 36.Qb8 Kh7 37.Qb1 f5–+) ½–½. Kucharkowski,Jens – Boehme, Freital, 1985.

6.a4 0–0

7.c4 dc4 8.Bc4 c6 9.0–0 cb5 10.ab5 Qe8 11.Nc3 a6 12.Qb3 a5 13.Nd4 (13.Na4 Bb4 14.Qd3 Qe7+–) 13...b6 (better 13...e5 14.Nde2 Bd6+=) 14.Ne6?? (better 14.d3!?+=) 14...Be6 (14...fe6!? 15.Na4 Bd8–/+) 15.Be6=+ fe6 16.Qe6 Kh8 (16...Qf7 17.Qb6 Nbd7 18.Qc7=+) 17.Qb6 Bd8?? (better 17...Bb4=+) 18.Qb7+– 1–0. Anonymous – Anonymous, lichess.org, 2020.

7.Be2 a6 8.0–0 ab5 9.ab5 Ra1 10.Ba1 Qe8 11.Nc3 c6 (11...Bd6 12.b6=) 12.Ne5 (12.bc6 Nc6 13.Qb1 Qb8=) 12...cb5 13.Nd7 Nbd7 (13...Qd7 14.Bb5 Nc6 15.Qf3=) 14.Nb5 Ne4 (14...Nb6 15.Qb1=) 15.f3 (15.Bd4 Qd8=) 15...Nd6 16.f4 Ne4 (16...Nc4 17.Bc4 dc4 18.Qe2=) 17.d3 (17.Bd4 Bf6=) 17...Nd6 (17...Nef6 18.Bd4=) 18.Nd6 Bd6 19.Rf3 (19.Qb1 Qb8+=) 19...Qc8 (19...Qe7 20.Qb1=) 20.Rg3 f6 21.c4 Qc5 (21...dc4!? 22.dc4 Qc7=) 22.Bg4+= Kf7 (22...Re8 23.Bd4 Qc6 24.cd5 Qd5 25.Bf3+=) 23.Bd4+– Qb4? (better 23...Qa5!?+–) 24.cd5+– f5 25.de6 Ke6 26.Bg7 (better 26.Bf3 g6 27.Bg7+–) 26...Rg8?? (better 26...fg4 27.Bf8 Nf8 28.Qg4 Ke7+–) 27.Bf5 Kf5 (27...Ke7 28.Bd7 Kd7+–) 28.Qg4 1–0. DEFFM – hereismukesh, freechess.org, 2018.

7.Be2 b6 8.0–0 a5 9.c4 c6 10.Ne5 c5 (10...Qc7 11.f4+/–) 11.d4 Bc8 12.Nd2 Bb7 13.Rc1 Nbd7 14.Nc6 Bc6 15.bc6 Nb8 16.cd5 ed5 17.Bb5 c4? (better is 17...Qc8!? 18.dc5 bc5 19.Bf6 Bf6 20.Rc5 Be7+–) 18.e4 de4 19.Qe2 (worse is 19.Nc4 Na6+–; 19.Rc4?! Na6 20.d5 Qd5 21.Bf6 Bf6 22.Ne4 Qd1 23.Rd1 Be5 24.Ba6 Ra6+–) 19...Re8 (19...Na6 20.Ne4 Re8 21.Bc4+–) 20.Qc4 (20.Nc4?! Na6+–) 20...Qc7 (20...Qc8 21.d5 Bb4 22.Rc2+–) 21.d5 Ng4 (21...Bb4 22.Rcd1 Qe7 23.Rfe1 Bd2 24.Rd2+–) 22.g3 Bg5 23.d6 Qd6 24.c7 Bd2 (24...Nd7 25.Ne4 Qh6+–) 25.Be8 Bc1 26.Qf7 Kh8 27.Bg7 1–0. pcmvr – netcheck (2290), net–chess.com, 2015.

7.Be2 c6 8.0–0 Qe8 9.c4 (9.Ne5 a6=) 9...dc4+= 10.Bc4 (10.bc6!? Nc6 11.Bc4=) 10...cb5–/+ 11.ab5 Bb5 12.Bb5 Qb5 13.Bd4 Nc6 14.Nc3 Qf5 15.Qb1 b6 16.Qf5 ef5 17.Rab1 Ne4 18.Nd5 Nd4?? (better is 18...Bd8+=) 19.Ne7+– Kh8 20.ed4 (20.Nd4?! Nd2 21.Nef5 Nb1 22.Rb1 Rfd8+=) 20...Rfe8 21.Nf5 g6 22.Ne3 f5 23.Ra1 Rf8 (23...Nf6 24.Ne5+–) 24.Rfc1 g5 (24...Nf6 25.Ng5+–) 25.d3 g4 (25...Nf6 26.Nf5 g4 27.Ne5+–) 26.de4 gf3 27.Nf5 fg2 28.Ra6 Rae8 (28...Rg8 29.d5+–) 29.Ra7 Re4 (29...Ra8 30.Ra8 Ra8 31.d5+–) 30.Rcc7 Rf5 (30...Re1 31.Kg2 Rg8 32.Kf3 Rg6+–) 31.Ra8 Rf8 (31...Re8 32.Re8 Rf8 33.Rf8) 32.Rf8 1–0. Janek – Quincy, internet, 2016.

6.a4 a6

7.c4 ab5 8.ab5 Ra1 9.Ba1 dc4 10.Bc4 0–0 11.0–0 c6 12.Nc3 cb5 13.Nb5 Bb5 14.Bb5 Qb6 15.Qe2 Nc6 16.Nd4 Nd5 17.Nc6 bc6 18.Bc4 Bf6 (18...Qb4 19.d3+=) 19.d4 Qa5 20.Qf3 Ra8 21.h3 g6?? (better 21...Qd8=) 22.e4 (22.Bd5!? cd5 23.Qf6 Qa3+–) 22...Nb6 (22...Qa3 23.Qa3 Ra3 24.ed5 ed5 25.Be2+–) 23.Qf6 (better 23.Be6!? Qg5 24.Bb3 Ra7+–) 23...Nc4 24.d5! e5 (24...cd5 25.Qg7; 24...ed5 25.Qg7) 25.Be5 Ne5 26.Qe5 cd5 27.ed5 Rd8 28.Rd1 Qa4 29.Qe2 Qa5 30.d6 Qc5 31.Qe7 White prepares the advance d7 31...Rf8?? (31...Qc8 32.d7 Qc7 33.Qe8 Kg7 34.Kh1+–) 32.Qf6 (better 32.Qf8! Kf8 33.d7+–) 32...Qc2 33.Re1 Qc6 (33...Qd2 34.Re7+–) 34.Qe7 Qc8 35.d7 Qd8 (35...Qc7+–) 36.Qd8 Rd8 37.Re8 (37.Re8 Re8 38.de8Q Kg7 39.Qe5 Kg8 40.g4+–) 1–0. DEFFM – smirk, freechess.org, 2017.

7.c4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nc3 cb5 11.cb5 (11.cd5 b4 12.de6 Be6 13.Bb5 Nc6=) 11...Ne4 (11...Bd6 12.Be2=) 12.Qb1 (12.Ne4 de4 13.Ne5 0–0=) 12...Nc3 (12...f5 13.Be2=) 13.Bc3+= Bf6 (13...0–0 14.Bd3 f5 15.Qb2+=) 14.d4 0–0 (14...Be7 15.Bd3+=) 15.Bd3+– g6 (15...h6 16.Bb4 Re8 17.0–0+–) 16.0–0 (16.Bb4 Re8+–) 16...Re8 (16...Qb6 17.Rc1+–) 17.Qb2 (17.Bb4 Bc8+–) 17...b6 (17...Qc7 18.Ne5+–) 18.Ra1 (18.Rc1 Bc8+–) 18...Qc7 19.Bb4 e5? (better 19...Rc8!?+–) 20.Rc1+– Nc6? (20...Qb7 21.Ne5 Rc8+–) 21.bc6 (21.Rc6?! Bc6 22.de5 Re5 23.bc6 Re6+–) 21...Bc6 (21...e4 22.cd7 Qd7+–) 22.Bb5! e4 (22...Bb5 23.Rc7 Pinning (23.Rc7 Deflection)) 23.Rc6 Qb8 (23...Qd8 24.Rd6 ef3 25.Rd8 Rd8 26.gf3+–) 24.Rf6 (24.Rf6 ef3 25.Be8 Qe8 26.gf3+–) 1–0. DEFFM – GuestDKFL, freechess.org, 2018.

7.c4 ab5 8.cb5 c6 9.Nc3 (9.Be2 0–0=) 9...0–0 10.Be2 cb5 (10...c5 11.0–0=) 11.ab5 Ra1 12.Qa1 Qb6 13.0–0 Bd6 (13...Rc8 14.Rc1=) 14.Na4+= Qa5 15.Bc3 Bb4 16.Rb1 Bc3 17.Nc3 (17.dc3?! Rc8+=) 17...Qb6 (17...Qc7 18.b6 Qd6 19.d4+=) 18.d4 Rc8 19.Bd3 Be8 (19...Ne8 20.Na4 Qd6 21.Rc1+=) 20.Qa3 (20.Rc1 Qd6+/–) 20...Nbd7+= 21.Rc1 Nf8 (21...Qd8 22.Qb4+=) 22.h3 Ng6 (22...Rc7 23.Rc2+/–) 23.Qb4 Nf8 24.g3 N8d7 25.Kg2 Qa7 (25...Qd8 26.Rc2+=) 26.Kh2 (26.Rc2 Qb6+=) 26...Nb6 27.Nd2 (27.Ne5+=) 27...Nc4 (better is 27...Bd7!?+=) 28.Nc4+/– dc4 29.Bc4 Qb6 (29...b6 30.Rc2+/–) 30.Bd3 Nd5?? (better is 30...Qd8+–) 31.Nd5 (31.Nd5 Rc1 32.Nb6+–) 1–0. pierre – muse, internet live, 2010.

7.c4 dc4 8.Bc4 0–0 9.Nc3 c6 10.0–0 cb5 11.ab5 Qc7 12.Qb3 (12.Qe2 Rc8 13.d3 Bd6+=) 12...ab5 (12...Rc8 13.d3+=) 13.Nb5 (13.Ra8 bc4 14.Qc2 Bc6+=) 13...Bb5 14.Qb5 Ra1 (14...Nbd7 15.d3+=) 15.Ra1 Nc6 16.Rc1 (16.d3 Rb8+=) 16...Ne4 (16...Rc8 17.Be2+=) 17.Bd3 Nd6 18.Qh5 h6 (18...f5 19.Bb1+=) 19.Qg4+– Ne8 20.Qd4?? (better 20.Qe4 g6 21.Nd4+–) 20...Nd4–+ 21.Rc7 Nf3 (21...Nc7?! 22.Bd4 Rc8 23.Kf1–+) 22.gf3 Nc7 1–0. DEFFM – GuestBVHF, freechess.org, 2016.

7.Be2 Bd6=.

6.a4 c6

7.c4 dc4 8.Bc4 cb5 9.ab5 0–0 10.0–0 Qe8 11.Nc3 a6 (11...Qd8 12.Ne5+=) 12.Qb3 ab5 (better 12...Qd8!?+=) 13.Ra8+– (13.Ra8 bc4 14.Qc4+– (14.Qb7?! Bc6 15.Qa7 Ba8 16.Qa8 Nbd7=)) 1–0. DEFFM – GuestXDQP, freechess.org, 2018.

7.c4 dc4 8.Bc4 cb5 9.ab5 0–0 10.Qb3 Ne4 11.0–0 Nc5 (11...Nd6 12.d3=) 12.Qa2 (12.Qc2 Bc8+–) 12...a6 (12...Ne4 13.Nc3 Nd6 14.Be2+=) 13.d4 Ne4 14.Bd3 Nf6 15.Nc3 a5 (15...Bd6 16.Ne5+=) 16.Ne5 (16.Ba3 Bc8+–) 16...b6 (16...Bc8 17.Ba3+–) 17.Rfc1 Bd6 (17...Bc8 18.Qa4+–) 18.Ba3 Ba3 19.Qa3 (19.Nd7?! Bc1 20.Nf8 Be3 21.Ne6 Bf2 22.Qf2 fe6=) 19...Be8 (19...Bc8 20.Ne4+–) 20.Na4 (20.Rc2 Ra7+–) 20...Nbd7?? (better 20...Ra7+–) 21.Nc6+– 1–0. Anonymous – Anonymous, lichess.org, 2020.

6.c4 dc4

7.Bc4 a6 8.Qa4 =.

7.Bc4 c6 8.a4 0–0 9.Nc3 (9.Qc2 Qc8 10.Ng5 Rd8=) 9...cb5 10.ab5 Be8 (10...a5 11.Na2=) 11.Qe2 Nbd7 1–0. Sanchez Morga,CM (1700) – Oliva Martin,PA (1865), El Puerto St Maria op, 2002.

7.Bc4 c6 8.a4 cb5 9.ab5 Qc7 10.Qb3 b6 (10...0–0 11.Be5 Qc5 12.Nc3+–) 11.0–0 Bd6? (11...0–0!? 12.Rc1 Rc8 13.d4+–) 12.Rc1 (better 12.Bd3 Qb7 13.Nc3+–) 12...Ng4?? (12...0–0+–) 13.Bd5 Bh2 14.Kf1 Qc1 (14...Nc6 15.Bc6 Rb8 16.Be4+–) 15.Bc1 ed5 16.Qd5 0–0 (16...a6 17.Qe4 Kd8 18.Qa8 Bb5 19.d3+–) 17.Nc3 Be6 (17...a6 18.Qa8 ab5 19.Nh2 Nh2 20.Kg1+–) 18.Qa8 Bc4 (18...Nd7 19.Qa7 Bb8 20.Qb7+–) 19.Ke1 Nd7 (19...Be5 20.Ba3 Re8 21.Qe4 Bb5 22.Ne5+–) 20.Qa7 Nc5 (20...Be6 21.Nh2 Nh2 22.Ba3+–) 21.Nh2 Nd3 (21...Nh2 22.Qc7 Ng4 23.d4 Nd3 24.Kd2+–) 22.Kd1 Nh2 23.Qc7 Bb3 24.Ke2 Nc1 25.Rc1 Ng4 26.Qb6 h5 27.Qc5 g6 28.b6 Re8 29.b7 (better 29.Qb5 Nf6 30.b7 Be6+–) 29...Ne5 30.Qe5! Re5 31.b8Q (31.b8Q Kg7 32.Qe5 Kf8 33.Nd5 Bc4 34.Rc4 Kg8 35.Rc8 Kh7 36.Rh8) 1–0. DEFFM – GuestRFFD, freechess.org, 2019.

7.Bc4 0–0

8.0–0 a6 9.Qa4 =.

8.0–0 a6 9.ba6 Na6 10.d4 Re8 11.Nc3 c6 12.e4 b5 13.Be2 b4 14.e5 (14.Nb1!?=) 14...bc3–/+ 15.ef6 Bf6 (15...cb2 16.fe7 A) worse is 16...ba1Q 17.ed8R (17.Qa1?? Qe7 18.Rb1 Nb4–+) 17...Qd1 A1) 18.Rd1?? Red8 (18...Rad8?! 19.Ba6 Ra8 20.Bc4–/+) 19.Rd2 c5–+; A2) 18.Re8 Be8 19.Rd1+=; B) 16...Qe7–/+) 16.Bc3= Nc7 17.h3 (17.Qc2!?=) 17...Nd5 18.Qc2 Qc7 19.Rfd1 (19.Bd2!?=) 19...c5–/+ 20.Qc1 c4 21.Bd2 e5?? (better is 21...c3 22.Bg5 Bg5 23.Ng5 Rec8–/+) 22.Bc4+/– (worse is 22.Ne5 Be5 23.de5 Bb5+=) 22...Qd6 (better is 22...Be6!? 23.Bd5 Qc1 24.Rdc1 Bd5 25.de5 Bd8+/–) 23.de5+– (23.Ne5?! Ba4 24.Re1 Be5 25.de5 Re5 26.Re5 Qe5+/–) 23...Be5 24.Bc3 (24.Bd5 Qd5 25.Bc3 Qd1 26.Qd1 Bc3+–) 24...Bc6? (better is 24...Bc3 25.Bd5 Qf6 26.Ba8 Ba1+–) 25.Ne5+– Bb7 (25...Re5 26.Be5 Qe5 27.Bd5 Bd5+–) 26.Nf3 (better is 26.Rb1!? Qa3 27.Qa3 Ra3 28.Rb7 Nc3+–) 26...Red8 27.Be5 Qe7 28.Bd5 (28.Rb1!? Rac8+–) 28...Bd5 29.Bg3 (29.Bc7 Rd7 30.Rd5 Rd5+–) 29...h6 (29...Bf3 30.gf3 Rd1 31.Qd1+–) 30.Qc2 (30.Bc7 Rd7 31.Rd5 Rd5+–) 30...Kh8 (30...Bf3 31.gf3 Qf6 32.Rd8 Rd8 33.Rd1+–) 31.Re1 Qd7 32.Ne5 Qe6 33.Nf3 Qf6?? (33...Qd7 34.Re3 Rac8+–) 34.a3 (34.Bh4 g5 35.Bg3 Kg8+–) 34...Rdc8 (34...Bf3 35.gf3 Qf3 36.Re3+–) 35.Qd3 Rc3 (35...Bf3 36.Qf3 Qf3 37.gf3 Kh7+–) 36.Qd5 Rcc8 (36...Rca3 37.Be5 Qe6 38.Bg7 Kg7 39.Re6 Ra1 40.Re1 Re1 41.Ne1+–) 37.Qe5 (better is 37.Be5!? Qd8 38.Qf7 Qg8+–) 37...Qg6 38.Qe4 Qf6 39.a4 Kg8 40.Rac1 Re8 (40...Qa6 41.Be5+–) 41.Qb4 (better is 41.Qe8 Re8 42.Re8 Kh7+–) 41...Rab8 (41...Re6+–) 42.Bb8 Rf8 43.Be5 (43.Qf8! Kh7 44.Be5 h5 45.Bf6 gf6 46.Qf7 Kh6 47.Re8 f5 48.Rc6) 43...Qg6+– 44.a5 Ra8 45.Ra1 f6 46.Qc4 Kh7 47.Qe4 Qe4 48.Re4 f5 49.Rb4 g6 50.a6 g5 51.a7 Kg6 52.Rb8 Rb8 53.ab8Q Kh5 54.Qe8 1–0. JThomasJeffrey – pieeater, ChessWorld.net, 2013.

8.0–0 c6 9.a4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 cb5 13.Bb5 Qb6 14.Bd7 Nbd7 (worse is 14...Nfd7 15.Na4 Qa6 16.Bg7+=) 15.Ne2 Rc8 16.Bc3 Qa6 17.Ng3 Ra8 18.Qa6 ba6 19.Ra1 Bd8 20.Nd4 a5 (20...Bc7!?+=) 21.Nc6+= Nd5 (21...Bc7!? 22.Na5 Bg3 23.hg3 Ne4+=) 22.Nd8+/– Nc3 23.dc3 Rd8 24.Ra5 Nb6 25.Ra1 f6 26.Ne4 Rd7 27.g3 Rc7 28.Nd6 (28.Ra6 Rc6+/–) 28...Kf8 (28...Rc3 29.Ra7 Rd3 30.Ne4=) 29.Rc1 (29.Ra6 Nd7 30.Nb5 Rc5+/–) 29...Ke7+= 30.Nb5 Rc5 31.Nd4 ½–½. mr5reasons1 (1665) – cghb, gameknot.com, 2012.

8.0–0 c6 9.a4= a6 10.Nc3 cb5 (10...ab5 11.ab5 Ra1 12.Qa1 cb5 13.Nb5=) 11.ab5 Qb6 12.Na4 (12.d3 Bd6+=) 12...Qc7 13.Be5 Qc4 14.Nc3?? (better is 14.Nb6 Qd3 15.Na8 Bb5 16.Re1=) 14...Bb5–+ 15.Nb5 Qb5 16.Rb1 (16.Qb1 Qd5–+) 16...Qc6 (16...Qd5 17.d3–+) 17.Nd4 (17.Rc1 Qd5–+) 17...Qd5 18.Bf6 Bf6 19.Qa4 (19.Nf3 e5–+) 19...Bd4 20.ed4 b5 21.Qa5 (21.Qa3 Rd8–+) 21...Nc6 22.Qb6 (22.Qa3 Rfb8–+) 22...Nd4 23.Rbc1 (23.Qa5 Ne2 24.Kh1 Nf4–+) 23...Rfb8 (24.Qa5 Ne2 25.Kh1 Nc1 26.Rc1 b4–+) 0–1. vello2 – 954, Live Game Caissa's Web, 2005.

8.0–0 c6 9.a4 cb5 10.ab5 a6 11.Nc3 Bc5 12.d4 Bb4 13.Qb3 a5 14.Ne5 b6 15.Ba3 Ba3 16.Ra3 Qe8 17.Be2 Bc8 18.Bf3 Nd5 (better 18...Ra7!?+–) 19.Nd5 ed5 20.Bd5 (20.Qd5!? Ra7+–) 20...Ra7 (20...Be6 21.Rc1+– (21.Ba8?! Bb3 22.Rb3 Nd7 23.Nd7 Qd7=)) 21.Nc6 Rc7?? (better 21...Rb7+–) 22.Nb8 1–0. GuestWYGT – samgoldwater, freechess.org, 2018.

8.Qc2 a6 9.Ng5 g6 =.

6.c4 c6

7.a4 0–0 8.Qc2 b6 9.Be2 c5 10.Nc3 Bc8 11.Ne5 Bb7 12.Bf3 Nbd7 13.d4 Ne5 14.de5 Nd7 15.Ne2 Qc7 16.cd5 Bd5 17.Be4 Be4 18.Qe4 Rae8 19.f4 f5 20.Qc4 Bh4 21.g3 Qb7 22.0–0–0 Bd8 23.Nc3 Rf7 24.e4 g6 25.Rd6 Rfe7 26.Rhd1 Qc8 27.ef5 gf5 28.Nd5 Rf7 29.Ne3 Nb8 30.g4 Bc7 31.R6d2 fg4 32.Ng4 Ref8 33.Nh6 Kh8 34.Nf7 Rf7 35.h4 a6 36.h5 ab5 37.ab5 Qe8 38.h6 Nd7 39.f5 Re7 40.fe6 Nf8 41.Qf4 Re6 42.Qg5 Rg6 43.Qf5 Rh6 44.e6 Kg8 45.Rg2 Rg6 46.Qf6 Qe6 47.Rg6 1–0. Buczinski – Dragon, Chorzow 1966.

7.a4 0–0 8.Nc3 Ne8 9.Be2 Nd6 10.Qb3 dc4 11.Bc4 Nc4 12.Qc4 cb5 13.ab5 Qb6 14.Ba3 ½–½. T Labahn – Osten, Festenburg 1989.

7.a4 0–0 8.Nc3 Re8 9.Qb3 h6 10.Be2 Nh7 11.0–0 Bf6 12.d4 Ng5 13.Ne5 g6 14.f4 Nh7 15.e4 Bc8 16.cd5 cd5 17.ed5 Qb6 18.Rad1 g5 19.Bh5 Be5 20.fe5 Re7 21.d6 Rd7 22.Ne4 Nc6 23.Nc5 Ne5 24.Nd7 Bd7 25.a5 Qa5 26.de5 Rf8 27.Be2 a6 28.Bc3 Qb6 29.Bd4 Qd8 30.ba6 ba6 31.Ba6 Bc6 32.Bc4 Re8 33.Rd2 Be4 34.Bb6 Qd7 35.Bb5 Bc6 36.Bc6 Qc6 37.d7 1–0. Dzieniszewski – Polomski, Krosno Odrzanskie 1983.

7.a4 a6 8.Nc3 0–0 9.cd5 c5. GuestKHDH – GuestLDPY, freechess.org, 2018.

7.Nc3 0–0 8.Be2 dc4 9.Bc4 cb5 10.Bb5 Nc6 11.0–0 a6 12.Bc6 Bc6 13.d4 Bb4 14.Ne5 Bc3 15.Nc6 bc6 16.Bc3 Nd5 17.Bb2 Qb6 18.Qb3 (18.Rb1 Qc7+=) 18...Qb3 19.ab3 Rfb8 20.Ra3 Nb4 21.Rc1 Nd3 22.Rc2 Nb2 23.Rb2 Kf8 24.b4 Ke7 25.Kf1 a5 26.Rba2 1–0. tightfist (2225) – salaschess (2110), net–chess.com, 2013.

6.Be2 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 c5 10.c4 0–0 11.0–0 Ne4 12.d4 Bf6 13.Nbd2 Nd2 (13...cd4 14.Bd4 Bd4 15.Nd4= (< 15.ed4 Nc3 16.Qe1 dc4–/+)) 14.Qd2 b6 (14...dc4 15.Bc4 cd4 16.Bd4+=) 15.Qa2 (15.dc5!? bc5 16.cd5 Ba1 17.Ra1 ed5 18.Qd5+–) 15...dc4 (15...cd4 16.Bd4 Bd4 17.ed4 dc4 18.Qc4=) 16.Bc4 (16.Qc4 cd4 17.Bd4 Re8+=) 16...Qc7 (16...cd4 17.Bd4 Bd4 18.ed4=) 17.Bb2 (17.dc5!? Qc5 18.Bf6 gf6 19.Qe2+/–) 17...Rc8= 18.Ne5 (18.Rc1 cd4 19.Nd4 Qd8+=) 18...Be5?? (better is 18...cd4 19.Nd7 Nd7 (19...Qd7?! 20.Bd4 Bd4 21.ed4=) 20.Be6 fe6 21.Qe6 Kh8 22.ed4 Nf8–/+) 19.de5+= Be8 20.f4 Nd7 21.Rf3 (21.Qb3 Nf8+/–) 21...Nf8= 22.f5 ef5 23.Rf5 Qd7 24.Qb1 Ne6 25.Qf1 Nc7 26.g3 Nb5?? 27.e6+– Qe7 28.ef7 Bf7 29.Rf7 Qe3 30.Qf2 Qf2+– 31.Kf2 Rf8 32.Rf8 Kf8 33.Bb5 g6 34.Be5 Ke7 35.Bc7 1–0. pumpkin (2480) – johnb (2245), net–chess.com, 2003.

7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.c4 dc4=+ 11.bc6 Bc6 12.Bc4 0–0 13.Nc3 (13.Bf6 Bf6 14.d4 Qa5 15.Nbd2 Rc8=+) 13...Bb4 (13...Qa5 14.Qb1=+) 14.0–0= Ne4 (14...Bd6 15.d3=) 15.Ne4 Be4 16.d3 Bc6 (16...Bd5 17.Bd5 Qd5 18.Qb1=) 17.Qb3 (17.Qe2 Be7+=) 17...Bd6 (17...Bf3!? 18.Qb4 Qg5=) 18.Qc3 e5 (18...Qf6!? 19.Qf6 gf6+–) 19.Ne5+– Be5? (better 19...Qg5!? 20.Nc6 Nc6+–) 20.Qe5 Qf6 21.Qf6 gf6 22.Bf6 1–0. DEFFM – GuestDGGC, freechess.org, 2018.

6.Be2 c6

7.a4 a6 8.0–0=.

7.a4 a6 8.Ne5 c5 9.c4 dc4 10.Nc3 0–0 11.0–0 Be8 12.Nc4 Nbd7 13.Bf3 ab5 14.ab5 Ra1 15.Qa1 b6 16.Qa7 e5 17.Bc6 Qb8 (17...Qc8 18.Ra1+– (18.Nb6?! Nb6 19.Qb6 Bc6 20.bc6 Qe6+–)) 18.Qb8+– Nb8 19.Be8 (19.Ne5?! Bc6 20.Nc6 Nc6 21.bc6 Rc8+=) 19...Re8 20.Nb6 Bd8 21.Nc4 Nbd7 22.Ra1 Nb6 23.Nb6 Bb6 24.Ra6 Rb8 25.Kf1 (25.Na4 Bd8+–) 25...Kf8 (25...e4 26.f3 ef3 27.gf3+–) 26.Na4 Nd7 (26...Bd8 27.b6 Nd7 28.Ra7+–) 27.Nb6 Nb6 28.Be5 Rb7 29.Bd6 Ke8 30.Bc5 Nc4 31.d4 Rb5 32.Ra7 Nd2 33.Ke2 Ne4 1–0. DEFFM – GuestYDQT, freechess.org, 2018.

7.a4 cb5 8.ab5 0–0 9.0–0 Qb6 (9...a5 10.Be5=) 10.Bd4+= Bc5 11.Bf6 gf6 12.Nc3 Bb4 13.Na4 Qd6 (13...Qc7 14.c3 Bd6 15.Qb3+=) 14.c3 Bc5 (14...Ba5 15.d4+=) 15.Nc5+/– Qc5 16.Qa4 a6 (16...e5 17.Qh4 Qb6 18.d4+/–) 17.Qg4 Kh8 18.Qh4 Qe7?? (better is 18...Kg7 19.ba6 ba6+/–) 19.Bd3+– (19.Bd3 f5 20.Qe7+–) 1–0. wiking – tipqh, internet, 2010.

7.a4 cb5 8.ab5 0–0 9.c4 dc4 10.Bc4 h6 (10...Qc7 11.d3+=) 11.0–0+– Qe8 (11...a5!?+–) 12.Nc3+– b6? (better 12...Bc8!?+–) 13.Ne5 Bc8 (13...a5 14.ba6 Nc6 15.f4+–) 14.Qf3 (14.Qf3 Nbd7 15.Nf7+–) 1–0. GuestXMGT – GuestMWNR, freechess.org, 2020.

5.Nf3 Nbd7

6.a4 a5 7.Na3 (7.Be2 0–0=) 7...Nb6 (7...0–0 8.Be2+=) 8.c4= 0–0 9.Be2 Bd6 (9...Ne4=) 10.d4 (10.0–0 Ne4=) 10...dc4 (10...Bb4!? 11.Kf1 Ne4–/+) 11.0–0= Bd7 (11...c3!? 12.Bc3 Ne4=) 12.Nc4+= Nc4 13.Bc4 b6 (13...c6 14.Ne5+=) 14.Qc2 (14.Ne5 Qe7+/–) 14...Nd5 (14...c6 15.Ne5 Rc8 16.Nd7 Nd7 17.Qe2+=) 15.Rfc1 Re8 16.Bf1 (16.Ne5 Bc8+/–) 16...Rc8 (16...Nb4 17.Qb3+=) 17.e4 Nb4 18.Qd2 Be7 (18...f5 19.Qe3+=) 19.h3 c5 20.dc5 Bc5 (20...Rc5?? 21.Rc5 bc5 22.Rd1+–) 21.Rd1 Rc7 22.Ne5 Qh4 23.Qe2 Rd8 24.Nf3 (24.Qf3 Qe7+/–) 24...Qe7= 25.Rd2 Be8 26.Rad1 Rcd7 27.Ne5 (27.Qe1 f6=) 27...Rd2= 28.Rd2 Rd2 29.Qd2 f6 30.Nc4 Qd7 (30...e5 31.Ne3=) 31.Qe2 (31.e5 Qd2 32.Nd2 Bg6=) 31...Bg6 32.Kh1 e5 (32...Qb7 33.f3 Qc7 34.Bc3+=) 33.f3 (33.Na5 Qa7 (33...ba5 34.Qc4 Qf7 35.Qc5 Be4 36.Ba3+–) 34.Nb3 Bf8=) 33...Bf7+= 34.Ne3 Be6 ½–½. Martin Perez,F (1825) – Monteiro Rodrigues,C, I Centro Goya Open, 2014.

6.a4 c5 7.c4 (7.Be2 0–0=) 7...dc4 (7...a6 8.Be2+=) 8.Bc4= Nb6 (8...0–0 9.0–0=) 9.Be2 Nbd5 (9...0–0 10.0–0=) 10.Nc3 (10.0–0 0–0=) 10...Nb4 (10...0–0 11.0–0=) 11.d4 (11.0–0 0–0=) 11...0–0 (11...cd4 12.Nd4 e5 13.Nf3=) 12.0–0 cd4 13.ed4 (13.Qd4 Qd4 14.Nd4 Rd8=) 13...Nbd5 (13...Qa5 14.Ne5=) 14.Ne5 Nc3 (14...Bd6 15.Nd5 Nd5 16.Bd3=) 15.Bc3 Nd5 16.Bb2 Bd6 17.Nc4 (17.Bd3 Qh4=) 17...Bb4 18.Qb3 a5 (18...Qg5 19.Bf3=) 19.ba6 (19.Rac1 Qh4=) 19...ba6 (worse is 19...Ra6 20.Ne3 Rb6 21.Bb5 Ne3 22.fe3+=) 20.Qg3 (20.Ba3 Rb8=) 20...a5 (20...Bb7 21.Rfc1+=) 21.Ne5 (21.Rfc1 Bb7=) 21...Bb7 (21...Ba6 22.Ba6 Ra6 23.Rfc1+=) 22.Bb5 (22.Rab1 Qd6+=) 22...Qd6= 23.Qg4 (23.Bc1 Rfc8=) 23...Rac8+= 24.Nd7 (24.Rfc1 Nf6 25.Qf4 Qd5+=) 24...f5 (24...Rfd8 25.Nc5 Ba8 26.Rfc1+=) 25.Qg5 Nf4 (better is 25...Rf7!? 26.Nc5 Bc6+=) 26.Nf8+= Bg2 27.Qh4 (better is 27.Ne6!? Nh3 28.Kg2 Ng5 29.Ng5+=) 27...Rf8= 28.f3? Rf6 29.Rfc1–/+ Rg6?? 30.Rc8+– (30.Rc8 Qf8 31.Rf8 Bf8 32.Qf4 Bh3 33.Kf2 Rg2 34.Ke3 Rb2 35.Bc4+–) 1–0. Jonsson,Pall G (1810) – Baldursson,Haraldur (1955), Icelandic Championship Division, 2016.

6.c4 0–0 (--> 5.Nf3 0–0 6.c4 Nbd7).

6.c4 a6 7.a4 dc4 (7...0–0 8.Nc3+=) 8.Bc4 0–0 9.Nc3 b6 10.0–0 Bb7 11.d4 c5 (11...ab5!? 12.ab5 Ra1 13.Ba1 Bb4=) 12.bc6+/– Bc6 13.Qe2 Qc8 14.Nd2 Qb7 15.e4 Rfe8 16.f3 h6 17.Nb3 Bb4 18.Rfc1 Reb8 19.Na2 (19.Rc2 Rc8+=) 19...Bf8 20.Bc3 (better is 20.Kh1!?+=) 20...Ba4+= 21.Nb4 (21.e5!? Nd5 22.Bb2–/+) 21...b5–/+ 22.Na5 Qb6 23.Nbc6 Rc8 24.Rcb1? (better is 24.e5 Rc6 25.ef6–/+) 24...Rc6–+ 25.Ra4 Qc7 (better is 25...Rc7 26.Raa1 Qa7–+) 26.Nc6+= ba4 27.d5 ed5 28.ed5 Bd6 29.g3 Re8 30.Qa2 Ne5 31.Ba5 (31.Be5!? Be5 32.f4= (worse is 32.Qa4 Bg3 33.Qc2 Bf4–+)) 31...Qd7 (31...Nf3 32.Kh1 Qc8 33.Be2–+ (33.Qa4 Qh3 34.Ne7 Re7 35.Qc2 Ne4 36.Be1 Ne1 37.Qe2 Ng3 38.Kg1 Bc5 39.Qf2 Nf3)) 32.Ne5 Be5 Exerts pressure on the isolated pawn 33.Ba6?? (33.Kg2 Rc8+=) 33...Qd5 (better is 33...Qa7 34.Bb6 Qa6–+) 34.Bc4? (34.Qa4!? Qf3 35.Bb7+=) 34...Qf3 35.Bf7 Kh8 36.Qg2? Bd4 37.Kh1 Qg2 38.Kg2 Re2 39.Kh1?? Ng4 (39...Ng4 40.Rb8 Kh7 41.Bg8 Kg6 42.Rb6 Bb6 43.Bb6 Rh2 44.Kg1 a3–+) 0–1. De Kruif,K (2050) – Hoare,Amy (1795), Guernsey Open, Guernsey GCI, 2009.

6.c4 dc4 7.Bc4 Nc5 8.0–0 0–0 9.d4 Nce4 10.Nbd2 h6 11.Ne4 Ne4 12.Qc2 Nf6 13.a4 Bd7 14.Rac1 Rc8 15.e4 c6 16.e5 Ne8 17.Qd3 Nc7 18.Nd2 Bg5 19.Ba3 Re8 20.Rb1 Nd5 21.Ne4 Be7 22.Be7 Re7 23.Nd6 Rb8 24.Bd5 ed5 25.bc6 Bc6 26.Qg3 Re6 27.Nf5 Rg6 28.Qa3 Re6 29.Rb3 Qg5 30.Rf3 Rf8 31.a5 a6 32.Nd6 Rg6 33.Rg3 Qd8 34.Nf5 Kh8 35.Rg6 fg6 36.Nh4 Kh7 37.Qg3 g5 38.Qd3 Kg8 39.Ng6 Re8 40.Ra1 Re6 41.f4 Be8 42.f5 Bg6 43.fg6 Qe8 44.Rb1 Qc6 45.Qf5 Rg6 46.Rb7 Qb7 47.Qg6 Qb5 48.Qb6 Qe2 49.g3 g4 50.Qe6 ½–½. hal1958 – starcity, playchess.de, 2002.

6.d4 0–0 7.Bd3 Bd6 8.0–0 c6 9.a4 Qc7 10.Nbd2 Re8 (10...e5 11.bc6 bc6 12.de5 Ne5 13.Ne5 Be5 14.Be5 Qe5 15.Nf3=) 11.c4+= e5 12.c5 Bf8 13.Ne5 Ne5 14.de5 Ng4 (14...Nd7!?+=) 15.Nf3+– f6 (15...g6!? 16.h3 Ne5 17.Ne5 Re5 18.Be5 Qe5+–) 16.Qc2+– Ne5 (better 16...h6 17.ef6 Nf6+–) 17.Bh7 Kh8 18.Ne5 fe5 (18...Re5 19.Be5 Qe5 20.bc6 bc6 21.Bd3+–) 19.Bg6 Re6 20.Qf5 Re8 (20...Kg8+–) 21.Qh5 (21.Qh5 Kg8 22.Qh7) 1–0. DEFFM – Thrillers, freechess.org, 2019.

6.Be2 Nc5 7.0–0 Ncd7 (7...a6 8.ba6 b6 9.Bb5 Bd7 10.Bd7 Qd7 11.Ne5=) 8.d3 (8.a4 0–0=) 8...Nf8 (8...a6 9.ba6 Ra6 10.e4=) 9.c4+= c6 (9...a6 10.a4+=) 10.bc6 bc6 11.Nbd2 Ng6 12.Ne5 (better is 12.Rb1+=) 12...0–0 (better is 12...Qc7!? 13.f4 Rb8+=) 13.Nc6+/– Qd7 14.Ne7 Qe7 15.Qb3 (15.Rb1 e5+/–) 15...dc4 (15...Rd8!?+/–) 16.Nc4+– Bd7 (better is 16...Qc7+–) 17.Ba3 Qd8 18.Bf8 Nf8 (18...Qf8 19.Qb7+–) 19.Qb7 Rb8 (19...a5 20.Rab1+–) 20.Qa7 Nd5 21.Bf3 1–0. b4_player – opponent, gamecolony.com, 2007.

6.a4 0–0

7.Be2 Nb6 8.0–0 Nc4 (8...a6!?=) 9.Bc4+– dc4 10.Qe2 a6 11.Qc4 ab5 12.ab5 Ra1 13.Ba1 Bd7 14.Ne5 Bc8 15.d4 b6 (15...Nd7 16.e4+–) 16.Nc6 Qd6? (better 16...Qd7+–) 17.Bb2+– (17.Ne7?! Qe7 18.Bc3 Qd7+–) 17...Nd5 (17...Re8 18.Ba3 (18.Ne7?! Qe7 19.f3 Bb7+–) 18...Qd7 19.Be7 Re7 20.Ne7 Qe7 21.Qc6+–) 18.e4 (18.e4 Re8 19.Ba3+–; 18.Ne7?! Ne7 19.Ba3 Qd7+–) 1–0. DEFFM – GuestDHSM, freechess.org, 2018.

7.Be2 c5

8.0–0 Bd6 =.

8.c4 a6 A) 9.d3 Qa5 (9...b6 10.0–0 Bb7 11.Nbd2 Qc7 12.ba6 Ra6 13.cd5 Nd5=) 10.Qd2 Qd2 11.Nbd2 b6 12.ba6 Ra6 13.0–0 Bb7+=; B) 9.0–0 ab5 (9...dc4 10.Na3 ab5 11.ab5 c3 12.Bc3 Nb6 13.Qc2 Bd7=) 10.ab5 Ra1 11.Ba1 dc4 12.Bc4 Nb6 13.d3 Bd7=.

8.c4 Nb6 A) 9.cd5 ed5 (9...Nbd5 10.0–0 a6 11.d4 ab5 12.ab5 Ra1 13.Ba1 Qa5=) 10.0–0 Be6 11.d3 a5 12.Nbd2 Re8 13.Qc2 Bd6=; B) 9.Na3 dc4 (9...Bd6 10.0–0 a6 11.d3 Nbd7 12.Qc2 Qc7 13.Rfb1 Ng4=) 10.0–0 c3 11.Bc3 Nbd5 12.Nc4 a6 13.Be5 b6=.

8.c4 Rb8 A) 9.a5 b6 (9...a6 10.b6 dc4 11.0–0 c3 12.Nc3 Re8 13.e4 e5+=) 10.Ne5 Ne5 11.Be5 Bd6 12.Bd6 Qd6 13.0–0 ba5=; B) 9.0–0 Qc7 (9...dc4 10.a5 a6 11.b6 Nd5 12.Bc4 N7f6 13.Be5 Ra8+=) 10.d4 cd4 11.Bd4 dc4 12.a5 e5 13.Ba7 Ra8=.

8.c4 dc4 9.Bc4 (9.0–0 Nd5 (9...a6 10.Na3 c3 11.Bc3 b6 12.Qc2 Nd5 13.Rfd1 N7f6=) 10.Qc1 a6 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 N7b6=; 9.Na3 c3 (9...Nd5 10.Nc4 Bf6 11.d4 cd4 12.Nd4 Qe7 13.e4 Nf4=) 10.Bc3 b6 11.0–0 Bb7 12.a5 Ne4 13.Qc2 Bd5=) 9...Nb6 (9...a6 10.d3 Nb6 11.ba6 ba6 12.Nbd2 Bb7 13.Qc2 Nc4+=) 10.Na3 (10.Be2 Nbd5 11.0–0 a6 12.d4 ab5 13.ab5 Ra1=) 10...Nc4 11.Nc4 b6 (11...a6 12.Qc2 ab5 13.ab5 Ra1+=) 12.0–0 White intends a5 (12.Qc2 Bb7 13.Ng5 Re8=) 12...Bb7 13.a5 (13.Nfe5 a6=) 13...Bd5 (13...Qd7+=) 14.Nfe5 Qc7 15.ab6 (15.d3!?+=) 15...ab6+= 16.Qe2 Rfd8 17.Ra6 (17.d3 Bd6=) 17...Ra6+= 18.ba6 Ra8 19.Ra1 h6 (19...b5!? 20.Na3 c4+=) 20.Na3 Qc8 21.Nc2 Bb3 Black prepares c4 22.Ne1 c4 23.a7 Qc7 24.N1f3 (better is 24.Bd4!?=) 24...Ra7–/+ 25.Ra7 Qa7 26.Nc4? (better is 26.Nc6 Qc7 27.Ne7 Qe7 28.d3 cd3 29.Qd3–/+) 26...Qa2–+ 27.d3 b5 28.Na5 Qa5 29.Be5 Qa2 30.Qe1 Nd7 31.Ba1 Bf6 (31...Bc2 32.d4–+) 32.d4 (32.Bf6 Nf6 33.d4 Bc4–+) 32...Nb6 33.h3 Nc4 34.Bc3 Qc2 35.Kh2 Qd1 36.Kg3 Qe1 37.Ne1 Be7 38.Nd3 Bc2 39.Nc5 Nb6 40.e4 (40.Kf3 Nd5 41.Ba5 e5–+) 40...Na4 41.Bb4 (41.Na4 ba4 42.Kf3 f5 43.ef5 Bf5–+) 41...Nc5 42.dc5 Be4 43.f3 Bc6 44.Kf4 f6 45.h4 (45.Ke3 e5–+) 45...Kf7 46.g3 (46.h5 e5 47.Kg4 Ke6–+) 46...g5 47.hg5 hg5 48.Ke3 e5 49.f4 Ke6 0–1. Tolmacheva,Eva – Egorova,Viktoriya, RUS–ch G16, 2001.

8.c4 Qc7 A) 9.0–0 e5 (9...Rd8 10.a5 dc4 11.Bc4 Bd6 12.d3 Ng4 13.h3 Nge5=) 10.cd5 e4 11.Ne1 Bd6 12.f4 Nd5 13.Qb3 N5f6=; B) 9.cd5 Nd5 (9...ed5 10.0–0 Re8 11.a5 Bd6 12.Qc2 Rb8 13.d3 b6=) 10.0–0 e5 11.Qc2 Bd6 12.Nc3 Nb4 13.Qe4 Nf6=.

8.c4 Re8 9.0–0 Nf8 10.d4 Ng6 11.Nbd2 (11.dc5 Bc5 12.Nbd2 b6+=) 11...b6 (11...cd4 12.Nd4 e5 13.N4f3=) 12.dc5 Bc5 13.Bf6 (13.Rc1 Bb7+=) 13...Qf6= 14.cd5 ed5 15.Nb3 Bb7 16.Nbd4 (16.a5 Rac8=) 16...Rac8 17.Qb3 (17.Qd2 Rc7=) 17...Ne5 (17...Nf4 18.Rfd1 Ne2 19.Ne2=) 18.Ne5= Qe5 (18...Re5 19.Rad1=) 19.Rad1 Red8 (19...Bd4 20.Rd4 Rc5 21.Qb4=) 20.Bf3 Rd6 (20...Bd4 21.Rd4 Rc5 22.Rfd1=) 21.a5 (21.Nc6 Bc6 22.bc6 Rdc6 23.Rd5 Qe6+=) 21...Rh6 (21...ba5 22.Nc6 Bc6 23.bc6 Rdc6 24.Rd5=) 22.g3 Attacks the isolani on d5 22...Bd4 (better 22...ba5!? 23.Rc1 Rb6=) 23.Rd4+– Increasing the pressure on the isolated pawn on d5 23...Qf5 24.Bg4 Qc2 25.Qc2 (25.Qa3 Qc3 26.Qa1 Qa1 27.Ra1 Rc7+–) 25...Rc2+= 26.ab6 (26.Ra1 ba5 27.Ra5 Rb6+=) 26...Rb6 27.e4 (27.Bf5 Rc4 28.Bd3 Rd4 29.ed4 a6 30.ba6 Ba6=) 27...Rb5 (27...h5 28.Bh5 Rb5 29.e5=) 28.ed5 (28.Bf3 Rc4 29.Rd2 Rb3 30.ed5 Rf3=) 28...Rd5 (28...Bd5? 29.Bf3+–) 29.Rd5 Bd5 30.Rd1 h5 ½–½. Portnoy,Yuriy (2010) – Uryadov,Sergey S (1745), Petrosian Memorial, 2007.

8.d3 b6 (8...Qa5 9.Bc3 Qc7 10.0–0=+) 9.0–0= Bb7 10.Nbd2 (10.a5 a6 11.ba6 Ra6 12.ab6 Ra1 13.Ba1 Qb6=+) 10...Qc7 (10...a6 11.ba6 Ra6 12.c4=) 11.c4 (11.a5 ba5 12.Nb3 a6–/+) 11...Rad8 (11...a6 12.ba6 Ra6 13.d4=) 12.Rc1 (12.Bc3 dc4 13.Nc4 Nd5=) 12...Rfe8 (12...Bd6 13.cd5 Bd5 14.e4=) 13.h3 (13.cd5 ed5 14.Qc2 Bd6=) 13...Bd6 (13...e5 14.cd5 Bd5 15.Nc4=) 14.Rc2 (14.cd5 Bd5 15.e4 Bb7=) 14...e5 15.cd5 Nd5 (15...Bd5 16.Nc4=+) 16.Qa1 (16.Ne4 N7f6=) 16...Nb4=+ 17.Rcc1 g6 (17...Bd5 18.Ne4=+) 18.Rfd1= Nd3?? (18...Bd5!?=) 19.Bd3+= e4 20.Nc4 (20.Bh8 Bf8 21.Ne4 Be4 22.Be4 Re4+=) 20...ed3 21.Rd3 Bf8 22.Nh2 Be4= 23.Rd2 Bf5 24.Rcd1 Re6 25.Nf1 f6 26.Ng3+– Be7 27.Nf5 gf5 28.Qb1 f4 29.Qf5 Nf8 30.Rd8 Bd8 31.ef4 Be7 32.Rd3 Re1 33.Kh2 Ng6 34.g3 Qb7 35.Qd5 Qd5+/– 36.Rd5 Re2 37.Rd2 Re4 38.Rc2 Kf7 39.f3 Re1 40.a5 ba5 41.Na5 Bd8 42.Nb7+– Bb6 43.Nd6 Ke7 44.Nc8 Ke6 45.Rd2 Kf7 46.Kg2 h5 47.h4 Rb1 48.Nd6 Ke7 49.Ne4 f5 50.Nc3 Re1 51.Nd5 Kf7 52.Nf6 Nf8 53.Nh5+– Ne6 54.Nf6 Nd4 55.Bd4+– cd4 56.Nd7 (56...Rb1 57.g4+–) 1–0. Bigalke,Andre – Krueger,Ingo, Pinneberg–ch, 2003.

6.c4 b6

7.Nc3 dc4 8.Bc4 Bb7 9.d4 0–0 10.0–0 Re8 11.Qc2 Bf3 12.gf3 Bd6 13.e4 Bh2?? (better is 13...Nh5 14.e5 Qg5 15.Kh1 Qf4+=) 14.Kh2+– Nd5 15.Ne2 Qh4 16.Kg1 Qg5 17.Ng3 Nf4 18.Bc1 ½–½. Dyga,Ryszard – Wich,Manuela, Gross Gerau op 3rd, 2000.

7.Be2 Bb7 (7...dc4 8.0–0=) 8.0–0 (8.cd5 Nd5 9.0–0 0–0=) 8...0–0 (8...dc4 9.Bc4 a6 10.Nd4=) 9.d4 (9.cd5 Nd5 10.Nd4 Bf6=) 9...Ne4 (9...dc4 10.Bc4 c6 11.a4=) 10.Nbd2 (10.cd5 Bd5 11.Nbd2 Nd2 12.Nd2 c5=) 10...f5 (10...Nd2 11.Nd2 dc4 12.Nc4=) 11.cd5 Bd5 (11...ed5 12.Qb3=) 12.Nc4 (12.Ne4 fe4 13.Nd2 Rc8+=) 12...Bf6 (12...a6 13.a4=) 13.Nce5 (13.Nfd2 Nd2 14.Nd2 a6+=) 13...Be5 14.de5 (14.Ne5 Ne5 15.de5 Qg5=) 14...Ndc5 15.Nd4 (15.a4=) 15...Qe7 (better 15...Qg5!? 16.f4 Qg6=) 16.f3+= Ng5 17.Nc6 (17.Ba3!?+=) 17...Bc6=+ 18.bc6 Rad8 (18...Qe8 19.Qe1=) 19.Qc2 h6 (19...Qe8!?=) 20.Ba3 (20.Bd4 Rd5+=) 20...Rd5 (20...Qe8 21.Bb5+–) 21.Rad1 (21.Bc4 Rdd8+–) 21...Rfd8 (21...Qe8 22.Rd5 ed5 23.Bc5 Qc6 24.Rc1 bc5 25.Qc5+–) 22.Rd5+– Rd5 (22...ed5 23.Qf5 Rf8 24.Qc2 Qe5 25.Bc5 bc5 26.Qc5+–) 23.Rd1 (23.Bc4 Rd8+–) 23...Nf7 (23...Re5 24.Rd7 Nh3 25.Kf1+–) 24.Rd5 (24.f4 Rd1 25.Qd1 Qd8+–) 24...ed5 25.f4 (25.Qf5?! Qe5 (worse 25...Ne5 26.Bb2 Nf7 27.Qd5+–) 26.Qe5 Ne5=) 25...Qh4 (25...Qe6!?+=) 26.Bc5 (26.g3 Qe7+–) 26...bc5 (26...Qe1 27.Bf1 bc5 28.Qc5+–) 27.Qc5 (better 27.g3!? Qe7 28.Qf5+–) 27...Qe1+– 28.Bf1 a5 29.g3 (29.Qd5 Qe3 30.Kh1 Qf4–/+) 29...g5 (better 29...Qd2+–) 30.Kg2?? (better 30.Qd5 a4 31.Qd4+–) 30...Qd2+= 31.Kg1 g4 (31...Qe1 32.Qd5 Qe3 33.Kg2 Qa3+–) 32.a3 Kg7 33.Qd4 (33.Qa7 Kg6+–) 33...Qd4 34.ed4 Nd8 35.Bb5 (better 35.Kf2 Nc6 36.Ke3+–) 35...Kf7? (better 35...Ne6+=) 36.Kf2+– h5 37.Ke3 Ne6 (37...Kg6 38.a4+–) 38.Ba4 (better 38.Ba6+–) 38...Ke7?? (better 38...Nd8+–) 39.Bb3 Nd8 (39...Nf8 40.Bd5 Kd8 41.Bf7+–) 40.Bd5 a4 (40...Ke8 41.Kd3+–) 41.Bg2 (41.Kd3 Ke8+–) 41...Ne6 42.d5 (42.Bf1 Kd8+–) 42...Nc5 (42...Nd8 43.Bf1 Nf7 44.Bb5+–) 43.Kd4 (43.Bf1!? Kd8+–) 43...Nb3 44.Kc3 Nc5 45.Kb4 Nd3 46.Ka4 Ne1 47.Bh1 (47.Bf1 Kd8+–) 47...Nf3 48.Kb5 Nh2 (48...Kd8 49.d6 Nd4 50.Ka6+–) 49.a4 (49.d6!? cd6 50.c7 Kd7+–) 49...Nf1 (49...Nf3 50.a5 Nd4 51.Kc4 Ne2+–) 50.a5 Ng3 51.a6 Nh1 52.a7 g3 53.a8Q h4 54.Qa7 (54.e6 Nf2 55.Qc8 Kf6 56.Qg8 Ke7 57.Qf7 Kd6 58.Qd7) 54...Kd8 (54...Kf8 55.d6 Nf2 56.dc7 Kf7 57.c8Q Kg6 58.Qg8 Kh5 59.Qg5) 55.d6 (55.e6 Ke8 56.Qc7 h3 57.Qd7 Kf8 58.Qf7) 55...cd6 (55...Ke8 56.dc7 Kf7 57.c8Q Kg6 58.Qg8 Kh5 59.Qg5) 56.ed6 (56.Qd7) 56...g2 (56...h3 57.Qd7) 57.Qb8 (57.Qd7) 1–0. GuestWYZP – GuestDYFY, freechess.org, 2018.

6.c4 Nb6

7.cd5 Bb4 8.de6 0–0 9.Qb3 Nbd5 10.ef7 Rf7 11.Bc4 Be6 12.Ng5 Ne3 13.Be6 Ng2 14.Kf1 Nd7 15.Bf7 Kh8 16.Ne6 Ne3 17.de3 Bc3 18.Bc3 Nf6 19.Nd8 Rd8 20.Bf6 gf6 21.Qe6 Rd1 22.Ke2 Rd6 23.Qe8 Kg7 24.Rg1 Kh6 25.Qf8# 1–0. Machete99 – Saevita, ICC, 2002.

7.cd5 ed5 8.Be2 0–0 9.0–0 (9.Qc2 a6=) 9...Re8 (9...a6 10.ba6 ba6 11.Bf6 Bf6 12.d4=) 10.Qc2 Bd6 (10...Bg4 11.Bf6 Bf6 12.d4=) 11.h3 (11.a4 a5=) 11...Bd7 12.a4 (12.Bd4 c6=) 12...a5 (12...c6 13.bc6 Bc6 14.Bd4=) 13.ba6 ba6 14.a5 Nc4 (14...Nc8 15.Ba3=) 15.Bc4 dc4 16.Na3 Ba3 17.Ba3 (17.Ra3 Bc6=) 17...Ne4 (17...Bc6 18.Nd4 (worse 18.Qc4 Bb5 19.Qd4 Bf1 20.Rf1 Ne4=+) 18...Bd5 19.f3=) 18.Rfc1 (worse 18.Qc4 Bb5 19.Qc1 Bf1 20.Kf1 Qd3 21.Kg1 c5–/+) 18...Bb5 19.Bb4 c5 20.Bc3 f6 (20...Qd3 21.Rab1=) 21.Ne1 Rb8 22.Rab1 Qd7 23.Qa2 Kh8 24.Rb2 Qf5 25.f3 Ng3 26.Rcc2 Qg5 27.Qa3 Ne2 28.Kf2 Nd4 29.Rc1 (29.Bd4 Qh4 Double attack (29...Qh4 Decoy); 29.ed4 Qh4 Double attack (29...Qh4 Decoy)) 29...h6 (29...Nb3 30.Rcb1=) 30.Rcb1 (30.Bd4 cd4 31.Nc2 c3 32.dc3 Re3 33.Rb5 ab5 (33...Qb5?! 34.Ne3 de3 35.Kg3–/+) 34.Ne3 Qe3 (34...de3?! 35.Kg1=+) 35.Kg3 b4–+) 30...Qh4 (30...Nb3 31.e4 Rbd8 32.Qa2=) 31.Kf1 Ne6 32.Rc2 (32.Kg1 Nd4=) 32...Qg3 33.Rcc1 (33.Rcb2 Qh4=) 33...Qh2 (33...Rb7 34.Kg1=) 34.Qa2 Bd7 (34...Kg8 35.Qc2=) 35.Rb8 (35.f4 Nc7=) 35...Rb8 36.Rb1 (36.Qc4?? Bb5 37.Qb5 Rb5–+) 36...Bb5 (36...Rb5 37.Rc1=) 37.Qc2+= Qd6 38.Qf5 (38.Kg1 Nf8+=) 38...Nf8= 39.Rc1 Bd7 40.Qh5 Be8 41.Qg4 (41.Qh4 Ng6 42.Qg4 Ne5=) 41...Bd7 42.Qe4 (42.Qc4?? Bb5 43.Qe2 Be2 44.Ke2 Ng6–+) 42...Bc6 (42...Be6 43.Kg1=) 43.Qh4 (43.Qc2 Bd7=) 43...Kh7 (43...Ng6 44.Qg4 (44.Qc4?? Bb5 45.Qe2 Be2 46.Ke2 c4–+) 44...Ne5 45.Qg3=) 44.Kg1 (44.Kf2 Qe6=) 44…Bb5 ½–½. Hebels,Alex (1970) – Salai,Josip (1965), IECG, 1999.

7.cd5= Nbd5 8.Be2 0–0 9.0–0 b6 (9...a6 10.ba6 b6 11.Qa4=) 10.Nc3 Bb7 11.Rc1 Rc8 (11...a6 12.Nd5 Nd5 13.a4=) 12.Ne5 Bd6 13.Nd5 Bd5 14.Nc6 Bc6 15.Rc6 Nd7 (15...Nd5 16.Qc1+=) 16.d4 (16.Qa4 Nb8 17.Rc2 Nd7+/–) 16...Nb8+= 17.Rc2 c6 18.a4 c5 (18...Qh4 19.g3 Qg5 20.Bd3+=) 19.Qd3 Qe7 20.f4 cd4 (20...Nd7 21.Bf3+=) 21.Bd4 (21.Rc8 Rc8 22.Qd4 f6+=) 21...Rc2 22.Qc2 Nd7 23.Bf3 (23.Bd3 f5+=) 23...Bc5= 24.Rd1 Bd4 25.Rd4 Nc5 26.Bc6 e5 27.fe5 Qe5 28.Qf2 g6 (28...Ne6 29.Rd1=) 29.Qf4+= Qe7 30.Kf2 Ne6 31.Re4 Qc5 32.Qe5? (32.Qf6 Rd8=) 32...Qc2 (better is 32...Ng5–+) 33.Kg3= Qd2 (33...Qd1 34.Qf6=) 34.Bd5+= Ng7 35.Qd4?? (better is 35.Kh3 Qd3 36.Rf4+=) 35…Nf5–+ (36.Kf3 Nd4 37.Rd4 Qe1–+) 0–1. Kucharkowski,Jens – Richter,W (2465), Freital, 1986.

7.Be2 dc4 8.Qc2 0–0 9.Bc4 Nc4 10.Qc4 Bd7 11.a4 c6 12.bc6 Bc6 13.Qe2 Qc7 14.0–0 Rfd8 15.Ne5 Bd5 16.d3 Bd6 17.f4 Nd7 18.Qg4? (18.Rc1 Qa5=) 18...Nf6?? (better is 18...Ne5 19.fe5 Be5–+) 19.Qg3 Qc2 20.Bd4 Nh5 21.Qf2 Qf2 22.Rf2 Be5 (22...f6 23.g4=) 23.Be5 (23.fe5!? Rac8 24.Na3+/–) 23...Rac8 24.e4 Bc6 25.g4 Nf6 26.Bf6 gf6 27.Ra3 Kg7 28.h3 Rd4 Attacks the isolani on a4 29.Nd2 (29.a5 Bb5 30.Rb3 Ba6+=) 29...Ra4 30.Rb3 a5 31.Rf1 (31.Nc4!?–/+) 31...Ra2–+ 32.Rf2 Rd8 (32...Ba4!? 33.Rb7 Rcc2 34.Ra7 Rd2 35.Rd2 Rd2 36.Ra5–+) 33.Nc4 Rf2 34.Kf2 Ra8 (34...a4 35.Rc3–/+) 35.Nd6 Ra7 36.Ke3 a4 37.Ra3 b5 38.Kd4 b4 39.Ra1 b3 40.Kc3 Kg6 41.Nc4 h5 42.Ra3 hg4 43.hg4 f5?? (better is 43...Bb5–+) 44.gf5 ef5?? (better is 44...Kf6 45.fe6 fe6+=) 45.Ne5+/– (45.Ne5 Kh5 46.Nc6+/–) 1–0. Valpa – Bossjos, playchess.de, 2005.

6.c4 dc4

7.a4 b6 8.Bc4 Bb7 9.0–0 0–0 10.Qb3 Bf3 11.gf3 Re8 12.Nc3 Bd6 13.Kh1 Ne5 14.Be2 Ng6 15.Rg1 Nh4 16.Ne4 Ne4?? (better is 16...e5+=) 17.Rg7+– (17.fe4?! Ng6+=) 17...Kf8 18.fe4 Ng6 19.f4 (better is 19.Rh7 Kg8 20.Rh5+–) 19...Qh4+/– 20.Rg1 e5?? (better is 20...Rad8+–) 21.Qf7 1–0. Bouvier,Clement (1725) – Vallobra,Thierry, Montigny le Bretonneux Noel op, 2008.

7.Bc4 Nc5 8.0–0 0–0 9.d4 Nce4 10.Nbd2 h6 11.Ne4 Ne4 12.Qc2 Nf6 13.a4 Bd7 14.Rac1 Rc8 15.e4 c6 16.e5 Ne8 17.Qd3 Nc7 18.Nd2 Bg5 (18...cb5 19.ab5 Qe8 20.b6 ab6 21.Ba3=) 19.Ba3+= Re8 20.Rb1 (20.f4 Be7 21.Be7 Re7+/–) 20...Nd5 21.Ne4 Be7? (better is 21...Rc7!?+=) 22.Be7+– Re7 23.Nd6 (23.Bd5 ed5 24.Nf6 gf6 25.Qg3 Kh8 26.ef6 Qf8 27.fe7 Qe7+–) 23...Rb8+/– 24.Bd5 ed5 25.bc6 Bc6 26.Qg3 Re6 27.Nf5 (27.Rfc1 Rg6 28.Qf4 Qd7+/–) 27...Rg6 28.Qa3 Re6 29.Rb3 Qg5 30.Rf3 Rf8 (30...Rbe8 31.Qd3 Rg6 32.Rg3+/–) 31.a5 (31.Qd3 A) 31...Ba4? 32.Rg3 Bb5 33.Qb1 (33.Rg5? Bd3 34.Rd1 hg5 35.Rd3 f6–+; 33.Qb5?! Qf5 34.Qb7 Qe4 35.Qa7 Rc6+=) 33...Qg3 34.hg3 Bf1 35.Kf1+–; B) 31...g6+/–) 31...a6 (31...Bb5 32.Re1+/–) 32.Nd6 (32.h4 Qd2+/–) 32...Rg6 (32...f6!?+=) 33.Rg3+/– Qd8 34.Nf5 Kh8 35.Rg6 fg6 36.Nh4 (36.Ne7!? Kh7 37.Rc1 Qe8+–) 36...Kh7+/– 37.Qg3 (37.Nf3!?+/–) 37...g5+= 38.Qd3 Kg8 39.Ng6 Re8 40.Ra1 Re6 41.f4 Be8 42.f5 Bg6 43.fg6 Qe8 44.Rb1 Qc6 45.Qf5 (45.Qb3!?+/–) 45...Rg6+= 46.Rb7 Qb7 47.Qg6 Qb5 (47...Qb4 48.Qe6 Kf8 49.Qc8 Ke7 50.Qc5 Qc5 51.dc5 Ke6+–) 48.Qb6 Qe2 49.g3 (49.Qe6!? Kf8 50.Qd6 Ke8 51.Qc6 Ke7 52.Qc5 Ke8 53.h3 Qe3 54.Kh1 Qe1 55.Kh2+=) 49...g4 50.Qe6 ½–½. Hal1958 – Starcity, playchess.de, 2002.

7.Bc4 Nb6

8.Qb3 Nc4=+ 9.Qc4. Spiegel,M – Lieder, corr SOK–88–24, 1988.

8.Bb3 0–0 9.0–0 Bd7 10.a4 c6 11.Nc3 cb5 12.ab5 Qe8 13.Qe2 Nfd5 14.Nd5 Nd5 15.Bc4 Nb6 16.Bd3 f6 17.Nd4 Nd5 18.Bc4 Bc5 (18...Bd6 19.f4 Nb6 20.Bb3+–) 19.f4 (19.Rfc1 Rc8+–) 19...b6 (better 19...Rc8!?+=) 20.f5+– Bd4 21.Bd4 Nc7 22.Rab1 (22.Rfb1 Kh8 23.fe6 Be6+–) 22...Kh8+– 23.fe6 (23.Bc3 ef5 24.Bb4 Rf7 25.Bf7 Qf7+–) 23...Ne6 24.Bc3 Ng5 (24...Rc8!?+–) 25.Bb4+– Be6? (better 25...Rf7!?+–) 26.Bf8 Qf8 27.Be6 Ne6 28.Rbc1 h6 29.Qg4 Nc5 (29...Re8 30.Qg6+–) 30.d4 Nb3 (30...Nb7 31.Rc7 Nd6 32.Qg6+–) 31.Rc7 Nd2 (31...Qg8+–) 32.Rf2 Nb3 33.Qg6 Na5 (33...a6 34.Rf7 Qg8 35.R2f6 ab5+–) 34.Rf7 Qg8 35.R2f6 gf6 36.Qf6 Qg7 37.Qg7 1–0. DEFFM – GuestNXHB, freechess.org, 2019.

8.Bb3 Nbd7 9.0–0 Bd6 10.d4 b6 (10...a6 11.Nc3=) 11.Ne5 Bb7 12.Nd2 Ne4 (12...a6 13.Nc6 Qc8 14.a4+=) 13.f3 (better is 13.Nc6!? Bc6 14.bc6+/–) 13...Nd2= 14.Qd2 Ne5 15.de5 Bc5 16.Qe2 Qg5 (16...a6 17.Rfd1 Qg5 18.Bd4 Bd4 19.ed4=) 17.Bd4+= Bd4 18.ed4 Qf4 19.Rad1 0–0–0 20.Qd2 (20.g3 Qh6+=) 20...Qd2 21.Rd2 Rd7 22.Rfd1 Rhd8 23.f4 (23.Bc2 a6 24.ba6 Ba6=) 23...Bd5=+ 24.Bd5 Rd5 25.a4 Kb7 26.Kf2 a6 27.ba6 Ka6 28.Ke3 Ka5 29.Rb2 c5 30.Rb5 Ka6 31.Rdb1 cd4 32.Kd3 Rb5 33.Rb5 f6 (33...h5!?=+) 34.g4 Kb7 (better is 34...fe5!? 35.Re5 Rd6=) 35.a5+/– Ka6 36.Rb6 Ka5 37.Re6 fe5 38.Re5 Kb6 39.f5 (39.Re7 g6+–) 39...Rd7+/– 40.g5 Kc6 41.h4 Ra7 (41...h6 42.gh6 gh6+=) 42.f6 (better is 42.Kd4 Ra4 43.Ke3+–) 42...gf6= 43.gf6 Kd6 44.Ke4 d3 45.Rd5 Ke6 46.Rd3 Ra4 47.Rd4 Rd4 48.Kd4 Kf6 49.Ke4 Kg6 50.h5 ½–½. Turcot,Jean – Kratky,Bohumil, Charlesbourg, 1979.

8.Be2 0–0 9.0–0 Nfd7 10.a4 Nd5 11.Nc3 N7f6 12.Qb3 Nc3 13.Bc3 Ne4 14.Rac1 Nc3 15.Qc3 Bd6 16.e4 Re8 (16...f6 17.d4 Bf4 18.Rc2+/–) 17.d4 (17.e5!? Be7 18.Qc7+–) 17...Bf4+/– 18.Rcd1 b6 19.g3 Bh6 20.Ne5 Bb7 21.Qf3 Qe7 22.Ng4 Qf8 23.Nh6 gh6 24.Qg4 Qg7 25.Qg7 Kg7 26.f3 Rad8 27.Bc4 Rd7 28.Rd2 Red8 29.Rfd1 c5 30.bc6 Bc6 31.Bb5 Bb5 32.ab5 Rc7 33.Ra2 Rdd7 34.Kf2 Rc4 35.Rad2 Rb4 36.d5 e5 37.Rc2 Rb5 38.Rc6 White prepares d6 (38.f4 ef4 39.gf4 f5=) 38...a5 (38...Rb2 39.Ke3+=) 39.d6 (39.Ke3 Rb3 40.Rd3 Rb2=) 39...Kf6+= 40.f4 Rb4 41.Ke3 b5 (41...Rb3!? 42.Ke2 a4+=) 42.fe5+= Ke6 (42...Ke5 43.Rd5 Ke6 44.Rb6+=) 43.Kf4 a4 44.Rdc1 f5 45.ef6 Kf6 46.R1c5 a3 47.Rf5 Ke6 48.Re5 Kf6 49.Rf5 Kg6 (49...Ke6!? 50.Ra6 Ra4 51.Re5 Kf7 52.Ra4 ba4+=) 50.Ke5 (better is 50.Ra6 Rd8 51.h4+– (51.Ra3?! Rd6 52.Ra8 Rd7+/–)) 50...a2? (better is 50...Ra4 51.Rf6 Kg7+/–) 51.Ra6+– Ra4 52.Ra4 ba4 53.Rf1 a3 (53...Rb7 54.Ra1 Kf7 55.Ra2 Rb5 56.Kf4 Ra5+–) 54.Ke6 Rb7 (54...Rf7 55.Ra1 Rf6 56.Ke5 Rf8+–) 55.Ra1 1–0. Hal1958 – Mrchess, playchess.de, 2002.

8.Be2 Bd7 =.

6.c4 c6

7.a4 0–0 A) 8.Qc2 Nb6 (8...Nc5 9.Nc3 Qc7 10.Be2 Bd7 11.0–0 e5 12.d4 ed4 13.Nd4 Rfc8; 8...Qc7 9.Nc3 Nb6 10.cd5 ed5 11.bc6 bc6 12.Ng5 Bd6 13.Ne2 Nbd7; 8...a6 9.bc6 bc6 10.Nc3 Rb8 11.Be2 Bd6 12.0–0 Bb7 13.Ba3 c5; 8...Bd6 9.Nc3 g6 10.Be2 Nc5 11.d4 Nce4 12.0–0 Nc3 13.Bc3 Ne4; 8...g6 9.Nc3 Nb6 10.bc6 bc6 11.cd5 ed5 12.Bd3 Rb8 13.0–0 Nc4; 8...Re8 9.Nc3 Qc7 10.Be2 Nb6 11.cd5 cd5 12.d3 a6 13.a5 Nbd7) 9.Na3 Ne4 10.Bd3 f5 11.bc6 bc6 12.0–0 Ba6 13.Rfb1 Bd6; B) 8.Nc3=+ Qc7 (8...e5 9.cd5 cd5 10.Be2 d4 11.ed4 ed4 12.Nd4 Nc5 13.Nf3 Be6; 8...Nb6 9.bc6 bc6 10.cd5 cd5 11.Rb1 Bb7 12.Bd3 Nc4 13.0–0 Rb8; 8...Nc5 9.Be2 Nfe4 10.0–0 Bd7 11.Qc2 Bd6 12.g3 f6 13.bc6 Bc6; 8...Bd6 9.Be2 Nb6 10.d3 a5 11.0–0 Qc7 12.h3 Bd7 13.Qb3 c5; 8...g6 9.Be2 Qc7 10.0–0 Nb6 11.cd5 ed5 12.d3 a5 13.h3 Bd7; 8...Ne4 9.Be2 a6 10.cd5 cd5 11.0–0 Ndc5 12.Qc2 Bd7 13.ba6 ba6; 8...a6 9.Be2 ab5 10.ab5 Ra1 11.Qa1 Nb6 12.cd5 ed5 13.bc6 bc6) 9.Qc2 g6 10.Be2 Nb6 11.d3 e5 12.a5 Nbd7 13.cd5 cb5.

7.a4 h6 8.Qc2 0–0 (8...Bd6 9.Be2 0–0 10.0–0 Qc7 11.Nc3 e5 12.bc6 bc6 13.cd5 cd5; 8...Bb4 9.Nc3 0–0 10.Be2 e5 11.cd5 cd5 12.Qb3 Bd6 13.Nd5 Nd5; 8...cb5 9.ab5 0–0 10.Be2 dc4 11.0–0 Nc5 12.Bc4 Nd5 13.d4 Nb4; 8...Qb6 9.Be2 0–0 10.Nc3 Qc7 11.0–0 Bd6 12.g3 Rb8 13.d4 dc4; 8...c5 9.Nc3 0–0 10.Be2 Qc7 11.0–0 b6 12.cd5 ed5 13.Nh4 Bd6; 8...Qc7 9.Be2 0–0 10.0–0 Bd6 11.Nc3 Nb6 12.d3 a5 13.ba6 ba6; 8...a6 9.cd5 cd5 10.Nc3 0–0 11.Be2 ab5 12.Bb5 b6 13.Bc6 Ra5; 8...Nc5 9.Nc3 0–0 10.d4 Nce4 11.Bd3 Nc3 12.Bc3 dc4 13.Bc4 Bd7) 9.Be2 e5 10.Ne5 Ne5 11.Be5 dc4 12.Nc3 Be6 13.bc6 bc6.

7.a4 h6 8.Nc3 0–0 (8...Qc7 9.Be2 0–0 10.0–0 Nb6 11.cd5 ed5 12.bc6 bc6 13.Qc2 Bd6; 8...Rb8 9.cd5 cd5 10.Be2 0–0 11.0–0 e5 12.Qc2 e4 13.Nd4 Nc5; 8...Nc5 9.Be2 Qc7 10.0–0 0–0 11.Qc2 Bd7 12.bc6 Bc6 13.Nb5 Qa5; 8...Nb6 9.bc6 Nc4 10.Bc4 dc4 11.Ne5 0–0 12.0–0 Bd6 13.Nb5 Be5; 8...Qa5 9.Be2 0–0 10.0–0 e5 11.d4 e4 12.Nd2 Re8 13.Qb3 Qb4; 8...Qb6 9.cd5 cd5 10.d4 a6 11.a5 Qd8 12.Qb3 0–0 13.Bd3 ab5; 8...Bd6 9.Be2 0–0 10.0–0 Nc5 11.Qc2 Nfe4 12.d3 Nc3 13.Bc3 Bd7) 9.Be2 cb5 10.ab5 dc4 11.Bc4 Nb6 12.Bb3 Bd7 13.0–0 Nbd5.

7.a4 h6 8.d4 Ne4 (8...0–0 9.Nbd2 c5 10.Be2 b6 11.0–0 Bd6 12.a5 ba5 13.Qa4 cd4) 9.Bd3 0–0 10.0–0 Bb4 11.Nbd2 Ndf6 12.Qc2 Nd2 13.Nd2 Bd7.

7.a4 h6 8.cd5 ed5 (8...cd5 9.Nc3 0–0 10.Be2 Nc5 11.0–0 Bd7 12.Rc1 Bd6 13.d4 Nce4) 9.Nc3 0–0 10.Be2 Nc5 11.0–0 Bf5 12.Nd4 Bd7 13.f4 Rc8.

7.a4 h6 8.Be2= Qc7 (8...0–0 9.Nc3 dc4 10.Bc4 Nb6 11.Bb3 Bd7 12.0–0 cb5 13.ab5 Nbd5; 8...Nc5 9.0–0 0–0 10.Nc3 Bd7 11.Qc2 Bd6 12.d4 Nce4 13.c5 Bc7; 8...Bd6 9.0–0 0–0 10.Nc3 Nb6 11.cd5 cd5 12.d3 a5 13.Qb3 Bd7; 8...Nb6 9.Na3 Ne4 10.0–0 0–0 11.Qc2 Nd7 12.Nd4 c5 13.cd5 Ndf6) 9.0–0 (9.Nc3 0–0 10.0–0 Nb6 11.cd5 ed5 12.d3 a5 13.h3 Bd7) 9...Bd6 (9...0–0 10.Qc2= Bd6 11.h3 e5 12.cd5 cd5 13.Qc7 Bc7) 10.d4+= (10.cd5 ed5 11.Nc3 0–0 12.d4 Nb6 13.Ba3 Ba3) 10...dc4 11.Bc4 (11.Na3 Ba3 12.Ba3 cb5 13.ab5 c3) 11...cb5 (11...Nb6!? 12.Bd3 0–0+– 13.Nbd2 Rd8) 12.Bb5+– a6 13.Be2 (13.Bd3 Ng4) 13...b6 (13...Nb6+– 0.76/10) 14.Nbd2 Bb7 15.Qb3 Bd5 16.Bc4 0–0 17.Bd5 ed5 18.Rfc1 Qb7 19.Ba3 Ba3 20.Qa3 Ne4 21.Rc2 (21.Ne4 de4 22.Nd2 Rfe8+=) 21...Rac8 22.Rac1 Rc2 23.Rc2 b5 24.Qc1 (24.ab5 ab5 25.Qe7 Rc8 26.Rc8 Qc8=) 24...ba4 25.Ne4 de4 26.Nd2 Nf6 (26...Rb8 27.g3=+) 27.Rc5 (27.Rc4!?=) 27...Rb8–/+ 28.g3 (28.Rc2!?–/+) 28...Qb2–+ 29.Qc2?? (better 29.Rc2!? Qc1 30.Rc1–+) 29...Qc2 (better 29...a3 30.Qb2 Rb2–+ (30...ab2?! 31.Nb1–+)) 30.Rc2 Rb4 (better 30...a3!? 31.Kf1–+) 31.Ra2 (31.Kf1!?=+) 31...Kf8 32.Kg2 Ke7 33.Rc2? (better 33.g4–/+) 33...a3–+ 34.Rc5 Ra4 (34...Rb2 35.Nc4 a2 36.Re5 Kd7 37.Ra5–+) 35.Rc1 a2 36.Ra1 Kd6 37.h3 Kd5 38.Nb3 Nd7 (38...Rb4!? 39.Nc5 Rb2–+) 39.Nc1–/+ Ra3 40.Ra2? (40.Kf1!?–/+) 40...Ra2–+ 41.Na2 Kc4 42.g4? (better 42.Nc1–+) 42...g6 43.f4 f5 (43...Kb3 44.Kg3–+) 44.gf5?? (better 44.d5–+) 44...gf5 45.Kf2 (45.Nc1 a5 46.d5 Kd5–+) 45...a5 46.Ke2 (46.Nc1 Kc3 47.Ne2 Kb2 48.Ke1–+) 46...Kb3 47.Nc1 Kc2 48.Na2 0–1. Schwichtenberg,Juergen (1870) – Fleischer,Martin (1895), Halle GER, 2011.

7.Qc2 0–0 A) 8.a4 Nb6 (8...g6 9.Nc3 Nb6 10.cd5 Nbd5 11.Nd5 cd5 12.Rc1 Bd7 13.Qc7 Qc7; 8...Qc7 9.Nc3 h6 10.Be2 Nb6 11.cd5 ed5 12.0–0 Bd6 13.bc6 bc6; 8...Bd6 9.Be2 e5 10.Nc3 e4 11.Nd4 Ne5 12.bc6 bc6 13.cd5 cd5; 8...h6 9.Be2 Nb6 10.bc6 bc6 11.Na3 Bb7 12.0–0 Ne4 13.Ne5 Nd7) 9.Na3 Ne4 10.Bd3 f5 11.0–0 Bd7 12.Ne5 Nc5 13.Bd4 Nd3; B) 8.Nc3 cb5 (8...Nc5 9.bc6 bc6 10.d4 Nce4 11.Ne5 c5 12.Ne4 Ne4 13.f3 Qa5) 9.Nb5 a6 10.Nc3 Nc5 11.d4 Nce4 12.c5 Bd7 13.Ne5 Nc3.

7.Qc2 Nc5 8.Bd4 Qd6 9.Nc3 0–0 10.Be5 Qd8 11.bc6 bc6 12.Rb1 Nfe4 13.Bd4 Nc3.

7.Nc3 0–0 8.Rb1 Nb6 (8...e5 9.bc6 bc6 10.d4 e4 11.Ne5 Bb7 12.Be2 Rb8=) 9.bc6 bc6 10.Ne5 Bb7 11.Be2 Bd6 12.d4 c5=.

7.Nc3 0–0 8.bc6 bc6 (8...Nb6 9.cd5 Nfd5 10.Nd5 Nd5 11.cb7 Bb7 12.Rc1 a6+=) 9.Rb1 Rb8 10.Be2 e5 11.cd5 cd5 12.Nb5 a6=.

7.Nc3 0–0 8.cd5 Nd5 (8...ed5 9.Be2 Nc5 10.0–0 Qc7 11.Rc1 Nfe4 12.bc6 bc6 13.Ne4 de4) 9.Nd5 cd5 10.Rc1 Nc5 11.Bd4 Ne4 12.Be2 Bd7 13.0–0 f6.

7.Nc3 0–0 8.Be2 Nb6 (8...Nc5 9.0–0 cb5 10.cb5 Bd7 11.Ne5 Bd6 12.d4 Rc8 13.Rc1 Nfe4; 8...Ne4 9.0–0 Ndc5 10.Qc2 cb5 11.cb5 Bd7 12.Ne5 Nc3 13.Bc3 Ne4; 8...Qc7 9.0–0 Nc5 10.Qc2 Bd7 11.a4 e5 12.d4 ed4 13.Nd4 Rfc8; 8...dc4 9.Bc4 Nb6 10.Be2 Bd7 11.bc6 Bc6 12.Ne5 Qd6 13.Nc6 Qc6; 8...cb5 9.cb5 Nc5 10.0–0 Bd6 11.Na4 Nfe4 12.Nc5 Nc5 13.Rc1 Bd7) 9.cd5 cd5 10.Qb3 Bd7 11.Ne5 Rc8 12.f4 Be8 13.0–0 d4.

7.Nc3 cb5 8.cb5 0–0 9.Be2 Nc5 10.0–0 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7.

7.Nc3 cb5 8.cb5 0–0 9.Be2 e5 10.0–0 a6 11.Rc1 ab5 12.Bb5 Bd6=.

7.Nc3 cb5 8.cb5 Qa5 9.Be2 0–0 10.0–0 Nc5 11.Rc1 Nce4 12.Ne5 Bd7 13.Nd7 Nd7.

7.Nc3 cb5 8.cb5 a6 9.Be2 0–0 10.0–0 ab5 11.Nb5 Nc5 12.Ne5 Nfd7 13.Qc2 Ne5.

7.Nc3 cb5 8.cb5 Nb6 9.Qb3 Qd6 10.Rc1 Bd7 11.Na4 0–0 12.Nc5 Rac8 13.Be5 Qc5.

7.Nc3 cb5 8.cb5 Nc5 9.Be2 0–0 10.Rc1 Nfe4 11.0–0 f6 12.Ne4 de4 13.Nd4 Bd7.

7.Nc3 cb5 8.cb5 Bd6 9.Be2 0–0 10.0–0 Nc5 11.Rc1 Bd7 12.d4 Nce4 13.Ne5 Nc3.

7.Nc3 cb5 8.cb5 e5 9.Be2 0–0 10.0–0 a6 11.Rc1 ab5 12.Bb5 Bd6=.

7.Nc3 cb5 8.cb5 g6 9.Be2 0–0 10.0–0 Bd6 11.Rc1 Qe7 12.h3 Ne5 13.Ne5 Be5.

7.Nc3 cb5 8.cb5 h6 9.d4 Ne4 10.Bd3 Qa5 11.0–0 Ndf6 12.Rc1 Bd7 13.Ne5 Rc8.

7.Nc3 cb5 8.Nb5 0–0 (8...a6 9.Nbd4 0–0 10.Be2 Nc5 11.0–0 Qd6 12.Nb3 dc4 13.Bc4 Nce4) 9.Rc1 a6 10.Nbd4 Nc5 11.cd5 Nd5 12.Ba3 Nd3 13.Bd3 Ba3.

7.Nc3 cb5 8.cd5 b4 9.de6 fe6 10.Na4 0–0 11.Qc2 Nb6 12.Nb6 Qb6 13.Ne5 Qd6.

7.Nc3 cb5 8.cd5 b4 9.de6 fe6 10.Ne2 0–0 11.d4 Nb6 12.Rc1 Nbd5=.

7.Nc3 cb5 8.cd5 ed5 9.Bb5 a6 10.Bd3 b5 11.0–0 b4 12.Ne2 Nc5=.

7.Nc3 Rb8 A) 8.d4 Qa5 (8...0–0 9.c5 e5 10.de5 Ne4 11.Be2 a6 12.a4 Ndc5=) 9.Qd2 a6 10.cd5 ed5 11.bc6 bc6 12.Rc1 0–0=; B) 8.cd5 ed5 (8...cd5 9.Be2 e5 10.0–0 0–0 11.Rc1 Bd6 12.d4 e4=) 9.Be2 0–0 10.0–0 Bd6 11.Nd4 Qc7 12.f4 c5=.

7.Nc3 dc4 A) 8.Bc4 cb5 (8...Nb6 9.bc6 Nc4 10.cb7 Bb7 11.Qa4 Qd7 12.Qc4 Bf3=) 9.Bb5 a6 10.Be2 0–0 11.0–0 b5 12.Rc1 Bb7+=; B) 8.bc6 bc6 (8...Nb6 9.Ne5 0–0 10.Rb1 bc6 11.Nc6 Qd7 12.Ne5 Qc7+=) 9.Bc4 Rb8 10.Rb1 0–0 11.0–0 Nb6 12.Be2 c5=.

7.Nc3 Nc5 A) 8.cd5 ed5 9.Be2 0–0 10.0–0 Qb6 11.Qc2 cb5 12.Bb5 Be6 13.Nd4 Rac8; B) 8.Ne5 d4 (8...Nfd7 9.Nf3 Nf6 10.Be2 0–0 11.0–0 Nfe4 12.cd5 cd5 13.Rc1 f6) 9.Na4 de3 10.fe3 cb5 11.Nc5 Bc5 12.Qc2 b4 13.Be2 Qc7; C) 8.bc6 bc6 9.Na4 Nce4 10.Ne5 Qc7 11.cd5 Bb4 12.Qc2 Bd2 13.Ke2 Ba6; D) 8.Be2 cb5 (8...0–0 9.0–0 Nfe4 10.cd5 ed5 11.bc6 bc6 12.Ne4 de4 13.Ne5 Qc7; 8...Qd6 9.0–0 0–0 10.d4 Nce4 11.bc6 bc6 12.Ne5 Nc3 13.Bc3 Ne4; 8...Qc7 9.Qc2 0–0 10.0–0 Bd7 11.a4 e5 12.d4 ed4 13.Nd4 Rfc8; 8...Bd7 9.0–0 0–0 10.Ne5 Bd6 11.d4 Qc7 12.Nd7 Ncd7 13.c5 Bh2; 8...Nfe4 9.cd5 cd5 10.0–0 0–0 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Qa5 9.cd5 cd5 10.0–0 0–0 11.Rc1 Bd7 12.d4 Nce4 13.Ne5 Rfc8; 8...dc4 9.Bc4 cb5 10.Bb5 Bd7 11.Bd7 Ncd7 12.0–0 0–0 13.Rc1 Rc8) 9.cb5 Bd7 10.Ne5 0–0 11.0–0 Bd6 12.d4 Nfe4 13.Ne4 Ne4.

7.Nc3 Qc7 8.bc6 (8.Rc1 0–0 (8...a6 9.ba6 ba6 10.cd5 ed5 11.Be2 Rb8 12.Qc2 c5=) 9.cd5 ed5 10.Be2 a6 11.bc6 bc6 12.0–0 Rb8=) 8...bc6 (8...Qc6 9.Nd4 Qb6 10.cd5 ed5 11.Rb1 0–0 12.Bb5 Nc5=) 9.cd5 ed5 10.Qc2 (10.Rb1 Rb8 11.Be2 Nb6 12.Qc2 0–0=) 10...0–0 (10...Rb8 11.Be2 c5 12.0–0 0–0=) 11.Nb5 (11.Be2 Rb8 12.0–0 Re8=) 11...Qb6 (11...Qb7 12.Nbd4 c5=) 12.Nbd4 The backward pawn on c6 becomes a target 12...c5 13.Nf5 Re8 14.Rb1 Qa5 0–1. pvanr (1845) – mowl (1765), gameknot.com, 2011.

7.Nc3 e5 A) 8.Rb1 Rb8 (8...0–0 9.bc6 bc6 10.d4 e4 11.Ne5 Bb7 12.Be2 Rb8=) 9.d4 e4 10.Nd2 Qa5 11.Be2 0–0 12.0–0 cb5=; B) 8.bc6 bc6 9.cd5 cd5 10.Bb5 Qc7 11.Rc1 Qd6 12.Nb1 d4+=.

7.cd5 A) 7...ed5 8.Nc3 0–0 (8...Nc5 9.Be2 0–0 10.0–0 Qc7 11.Rc1 Nfe4 12.bc6 bc6 13.Ne4 de4) 9.Be2 Nb6 10.bc6 bc6 11.0–0 Bd6 12.Qc2 Rb8 13.Rab1 Bd7; B) 7...cd5 B1) 8.Nc3 0–0 (8...Nc5 9.Be2 0–0 10.0–0 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Qb6; 8...h6 9.d4 0–0 10.Rc1 Nb6 11.Bd3 Nc4 12.Bc4 dc4 13.Qa4 Bd7; 8...Bd6 9.Be2 Nc5 10.0–0 0–0 11.Na4 Nfe4 12.Nc5 Nc5 13.Rc1 Bd7; 8...Ne4 9.Be2 0–0 10.0–0 Ndc5 11.Rc1 f6 12.Ne4 de4 13.Nd4 Qb6; 8...g6 9.Be2 Nc5 10.Rc1 0–0 11.0–0 Bd7 12.d4 Nce4 13.Ne4 Ne4; 8...a6 9.Be2 0–0 10.0–0 ab5 11.Nb5 b6 12.Qb1 Ne4 13.d3 Nd6; 8...Nb6 9.Rc1 Qd6 10.Qb3 Bd7 11.Nb1 Qb4 12.Qb4 Bb4 13.Ba3 Ba3; 8...Qa5 9.Be2 0–0 10.0–0 Nc5 11.Rc1 Bd7 12.d4 Nce4 13.Ne5 Rfc8; 8...e5 9.Be2 0–0 10.0–0 e4 11.Nd4 Ne5 12.d3 ed3 13.Bd3 Bd7) 9.Be2 Nc5 10.0–0 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Qb6; B2) 8.Qc2 Bd6 (8...Nc5 9.Bd4 Bd7 10.Nc3 Rc8 11.Ne5 0–0 12.Bd3 Nfe4 13.0–0 Nd3; 8...0–0 9.Be2 Nc5 10.Bd4 Nce4 11.0–0 Bd7 12.Ne5 Rc8 13.Qb2 Bc5) 9.Nc3 0–0 10.Rc1 Nc5 11.Be2 Bd7 12.Ng5 h6 13.d4 hg5; B3) 8.Bd3 Nc5 (8...0–0 9.Qc2 Nc5 10.0–0 Nd3 11.Qd3 a6 12.Nc3 ab5 13.Nb5 Ne4; 8...Qa5 9.Nc3 Nc5 10.Qc2 0–0 11.0–0 Bd6 12.Nd4 Nd3 13.Qd3 Bd7; 8...Bd6 9.Qc2 Nc5 10.0–0 Nd3 11.Qd3 0–0 12.Be5 Qc7 13.Bd6 Qd6) 9.Qc2 Bd7 10.Bd4 Rc8 11.Nc3 Nfe4 12.Ne4 Ne4 13.Qb1 Qc7; B4) 8.Be2 0–0 (8...Nc5 9.Nc3 0–0 10.0–0 Nfe4 11.Rc1 f6 12.d4 Nc3 13.Bc3 Ne4; 8...a6 9.Nc3 0–0 10.0–0 ab5 11.Nb5 Nc5 12.Ne5 Nfe4 13.f3 Nd6; 8...Qc7 9.0–0 0–0 10.Nc3 Nb6 11.Rc1 Nc4 12.Na4 Qa5 13.Bc4 dc4; 8...Ne4 9.Nc3 0–0 10.0–0 Ndc5 11.Rc1 f6 12.Ne4 de4 13.Nd4 Qb6; 8...Bd6 9.Nc3 0–0 10.0–0 Nc5 11.Rc1 Bd7 12.d4 Nce4 13.Ne4 Ne4) 9.Nc3 Ne4 10.0–0 Ndc5 11.Rc1 f6 12.Ne4 de4 13.Nd4 Qb6.

7.Be2 0–0 A) 8.0–0 Nb6 (8...dc4 9.bc6 bc6 10.Na3 c3 11.dc3 Qc7 12.Nc4 Rb8 13.Qc2 Ba6) 9.Na3 cb5 10.cb5 Qd6 11.Nc2 Nc4 12.Bc4 dc4 13.Ba3 Qc7; B) 8.cd5 Nd5 (8...ed5 9.Nc3 cb5 10.Nb5 Ne4 11.0–0 Ndc5 12.d3 Nd6 13.Nbd4 Bd7) 9.bc6 bc6 10.Nc3 Nc5 11.0–0 Rb8 12.Rb1 Bd6 13.Ba1 Bd7; C) 8.Nc3 dc4 (8...Nb6 9.cd5 ed5 10.0–0 cb5 11.Nb5 Nc4 12.Qc2 Nb2 13.Qb2 a6; 8...Qc7 9.0–0 Nc5 10.Qc2 Bd7 11.a4 e5 12.bc6 bc6 13.cd5 e4; 8...cb5 9.cb5 Nc5 10.0–0 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Nc5 9.0–0 cb5 10.cb5 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Ne4 9.0–0 Ndc5 10.cd5 cd5 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Qb6 9.Qc2 cb5 10.Nb5 a6 11.Nc3 dc4 12.Bc4 Qc5 13.Ne4 Ne4; 8...Bd6 9.0–0 Nb6 10.cd5 ed5 11.Qc2 Rb8 12.Rab1 Qc7 13.bc6 bc6; 8...Qa5 9.0–0 Nc5 10.bc6 bc6 11.Qc2 Bb7 12.Ne5 Nfd7 13.f4 f5) 9.Bc4 Nb6 10.Be2 Bd7 11.bc6 Bc6 12.Ne5 Qd6 13.Nc6 Qc6.

7.Be2 cb5 8.cb5 Nb6 (8...0–0 9.0–0 Nb6 10.Qb3 Bd7 11.d3 a6 12.Nc3 ab5 13.Nb5 Ra5; 8...Nc5 9.0–0 0–0 10.Nc3 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Qc7 9.Nc3 Nb6 10.d3 0–0 11.0–0 Bd7 12.Qb3 a5 13.a4 Rac8; 8...h6 9.Nc3 0–0 10.0–0 Nb6 11.Rc1 Bd6 12.Qb3 Bd7 13.Ba3 Ba3; 8...Bd6 9.Nc3 0–0 10.0–0 Nc5 11.Rc1 Bd7 12.d4 Nce4 13.Ne5 Nc3; 8...a6 9.Nc3 0–0 10.0–0 ab5 11.Nb5 b6 12.a3 Ba6 13.Nbd4 Bb7; 8...Qa5 9.Nc3 0–0 10.Rc1 Nc5 11.0–0 Bd7 12.d4 Nce4 13.Ne5 Rfc8; 8...Ne4 9.Nc3 0–0 10.0–0 Ndc5 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...a5 9.Nc3 0–0 10.0–0 Bd6 11.Rc1 b6 12.Nd4 Bb7 13.Nc6 Qe8) 9.Bd4 0–0 10.0–0 Bd6 11.Nc3 Nbd7 12.Na4 e5 13.Bb2 e4.

7.Be2 Nb6 A) 8.bc6 Nc4 9.Bc4 dc4 10.Qa4 0–0 11.Na3 Qd5 12.c7 Ne8 13.Qc4 Qc4; B) 8.Na3 0–0 (8...cb5 9.cb5 Qd6 10.0–0 0–0 11.d3 Bd7 12.Ne5 Rac8 13.Qb3 Rc7; 8...Ne4 9.0–0 0–0 10.bc6 bc6 11.Rb1 f6 12.Qc2 Rb8 13.cd5 cd5; 8...Bd7 9.Ne5 0–0 10.0–0 cb5 11.cb5 Rc8 12.d3 Be8 13.f4 Nfd7) 9.0–0 cb5 10.cb5 Bd6 11.Rc1 Qe7 12.Nc2 Bd7 13.Ne5 Rfc8; C) 8.cd5 cd5 (8...Nbd5 9.Nc3 Bd7 10.Nd5 cd5 11.Ne5 0–0 12.Rc1 Qa5 13.Bc3 Bb4) 9.0–0 0–0 10.Qb3 Bd7 11.Bd4 Ne4 12.Nc3 Rc8 13.Ne4 de4.

7.Be2 dc4 8.bc6 bc6 9.Qc2 Ba6 10.Na3 c3 11.Qc3 Be2 12.Ke2 0–0 13.Qd4 Qe8.

7.Be2 Nc5 A) 8.0–0 dc4 9.Bc4 cb5 10.Bb5 Bd7 11.Bd7 Ncd7 12.Na3 0–0 13.Rc1 Qa5; B) 8.cd5 ed5 (8...Nd5 9.bc6 0–0 10.Nc3 bc6 11.0–0 Rb8 12.Rb1 Bd6 13.Ba1 Bd7) 9.0–0 0–0 10.Nc3 Qb6 11.Qc2 cb5 12.Bb5 Be6 13.Nd4 Rac8; C) 8.Nc3 Qc7 (8...cb5 9.cb5 0–0 10.0–0 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...0–0 9.0–0 cb5 10.cb5 Nfe4 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...Nfe4 9.cd5 cd5 10.0–0 0–0 11.Rc1 f6 12.Ne4 de4 13.Nd4 Bd7; 8...dc4 9.Bc4 cb5 10.Bb5 Bd7 11.Bd7 Ncd7 12.0–0 0–0 13.Rc1 Rc8; 8...Bd6 9.cd5 ed5 10.0–0 0–0 11.bc6 bc6 12.d4 Nce4 13.Ne5 Nc3; 8...Qa5 9.bc6 bc6 10.Ne5 Qc7 11.d4 Rb8 12.Rb1 Nce4 13.Qd3 Ba6) 9.0–0 0–0 10.Rc1 Nfe4 11.cd5 ed5 12.bc6 bc6 13.Ne4 de4.

7.Be2 Qc7 A) 8.Nc3 0–0 (8...Nc5 9.0–0 0–0 10.Rc1 Nfe4 11.cd5 ed5 12.bc6 bc6 13.Ne4 de4; 8...Nb6 9.cd5 cd5 10.d3 Bd7 11.a4 0–0 12.0–0 a5 13.Qb3 Rac8; 8...dc4 9.Bc4 cb5 10.Bb5 a6 11.Be2 0–0 12.Rc1 Qa5 13.Nd4 Nc5) 9.0–0 Nb6 10.cd5 ed5 11.Qb3 c5 12.a4 Be6 13.a5 Nbd7; B) 8.0–0 0–0 (8...dc4 9.bc6 Qc6 10.Na3 b5 11.Nd4 Qb6 12.Bf3 Bb7 13.Rc1 Ne5; 8...Bd6 9.Nc3 0–0 10.d4 dc4 11.Bc4 c5 12.Rc1 Nb6 13.Na4 Nc4; 8...Nc5 9.Qc2 0–0 10.Be5 Bd6 11.Bf6 gf6 12.Nc3 f5 13.bc6 bc6; 8...Rb8 9.Nc3 0–0 10.Qc2 a6 11.a4 g6 12.cd5 ed5 13.d4 Nb6) 9.Nc3 Nb6 10.cd5 ed5 11.Qb3 a6 12.a4 Nc4 13.Bc4 dc4; C) 8.cd5 cd5 (8...ed5 9.0–0 0–0 10.Nc3 Bd6 11.bc6 bc6 12.Rc1 a6 13.Rb1 Rb8; 8...Nd5 9.Nc3 0–0 10.Nd5 ed5 11.Qc2 Nc5 12.Rc1 g6 13.bc6 bc6) 9.Nc3 Nb6 10.d3 0–0 11.0–0 Bd7 12.Qb3 a5 13.a4 Rac8.

7.Be2 Bd6 A) 8.0–0 0–0 (8...cb5 9.cb5 0–0 10.Nc3 Nc5 11.d4 Nce4 12.Rc1 Nc3 13.Bc3 Ne4; 8...Nc5 9.Nc3 0–0 10.bc6 bc6 11.d4 Nce4 12.c5 Bc7 13.Qc2 Rb8; 8...h6 9.d4 cb5 10.c5 Bc7 11.Bb5 0–0 12.Nc3 Ne4 13.Qc2 f5; 8...Nb6 9.cd5 ed5 10.Qc2 0–0 11.bc6 bc6 12.Ng5 g6 13.Na3 Bf5; 8...Qe7 9.Nc3 0–0 10.Qc2 c5 11.a4 h6 12.a5 Rd8 13.d4 cd4; 8...c5 9.Nc3 0–0 10.d4 dc4 11.Bc4 Nb6 12.Be2 Qc7 13.dc5 Qc5) 9.Nc3 Nb6 10.cd5 ed5 11.d4 Qe7 12.Qc2 Rb8 13.h3 g6; B) 8.cd5 ed5 (8...cd5 9.Nc3 0–0 10.0–0 Nb6 11.Qb3 a5 12.a4 Bd7 13.Rfc1 Qb8) 9.Nc3 0–0 10.Qc2 Qc7 11.bc6 bc6 12.0–0 Rb8 13.Rfc1 Nc5; C) 8.Nc3 0–0 (8...Nb6 9.cd5 cd5 10.0–0 0–0 11.Qb3 a5 12.a4 Bd7 13.Rfc1 Qb8; 8...Nc5 9.0–0 0–0 10.bc6 bc6 11.d4 Nce4 12.c5 Bc7 13.Qc2 Rb8; 8...h6 9.cd5 ed5 10.0–0 0–0 11.d4 c5 12.Qc2 c4 13.a4 Re8; 8...a6 9.bc6 bc6 10.Rb1 0–0 11.d4 Rb8 12.c5 Bc7 13.0–0 e5) 9.cd5 cd5 10.0–0 Nb6 11.Qb3 Bd7 12.Ba3 Ba3 13.Qa3 Nc4.

6.d4 c5

7.c4 dc4 (7...0–0!?=+) 8.Bc4= cd4 (8...Qa5 9.Nbd2=) 9.Qd4 (9.Bd4 0–0 10.0–0 b6+=) 9...Bc5 (9...0–0 10.0–0=) 10.Qf4 Qa5 (10...Nh5 11.Qe4+=) 11.Nbd2 0–0 12.0–0 Nh5?? (better 12...Be7+=) 13.Qg5+– Nhf6 14.Bf6 Nf6 15.Qc5 Qc3 (15...Bd7 16.Rfc1+–) 16.Rfc1 Qa5 17.Bd3 b6 (17...Qd8 18.Nd4+–) 18.Nc4 (better 18.Qe7 Bd7 19.a4 Rfe8+–) 18...bc5 (18...Qe1 19.Ne1 bc5 20.Ne5+–) 19.Na5 Bd7 (19...Nd7 20.Rd1 f5 21.Nc6+–) 20.Rc5 Rac8 (20...Rfc8 21.Rac1+–) 21.Rac1 Rc5 (21...Rb8 22.Nd4+–) 22.Rc5 Rb8 (22...Rd8 23.Nb7 Ra8 24.Rc7+–) 23.Ne5 (23.Rc7 Rc8 24.Rc8 Bc8+–) 23...Be8 (23...Kf8 24.a4 Ke7 25.Nac4+–) 24.Rc7 a6 (24...Ra8+–) 25.ba6 Nd5 26.Rb7 Rc8 27.a7 Rc1 28.Bf1 Bc6 29.a8Q (29.a8Q Be8 30.Qe8) 1–0. GuestHQLF – GuestHPFP, freechess.org, 2020.

7.bc6 bc6 8.Bd3 Qb6 (8...Rb8 9.Bc3=+) 9.Bc3= c5 10.Nbd2 (10.dc5 Nc5 11.0–0 0–0=) 10...c4=+ 11.Be2 Qc7 12.0–0 Bd6 13.h3 0–0 14.Rb1 Ba6 (14...Rb8 15.Rb8 Nb8 16.e4 de4 17.Ne5=) 15.Bb4= Rab8 16.Bd6 (16.a3 Bb5=+) 16...Qd6 17.c3 Rb6 18.Rb6 Nb6 19.Nb1 (19.Qc2 Bb5=) 19...Qe7 (19...Bb5 20.Nbd2=+) 20.Ne5 Bb7 21.f3 (21.Nd2 Rb8=) 21...Nfd7 22.Nd7 Nd7 23.Nd2 Bc6 24.Qc2 Nb6 0–1. Kislov,Leonid – Ledovskih,Viktor, Omsk Russia, City Championship, 2013.

6.Be2 0–0

7.0–0 (--> 5.Nf3 0–0 6.Be2 Nbd7 7.0–0).

7.Nc3 c6 8.0–0 a6 9.bc6 bc6 10.Rb1 a5 11.Nd4 Qc7 12.f4 Ba6 13.Rf3 Rfb8 14.Rg3 Bd6 15.Bd3 Bd3 16.cd3 e5 17.Nf5 ef4 18.Rg7 Kf8 19.Qe1 fe3 20.Qe3 Bf4?? (better is 20...Bh2 21.Kh1 Qe5 22.Ba3 c5 23.Bc5 Nc5 24.Qc5 Ke8 25.Qc6 Kd8 26.Rf7 Qf5 27.Rf6 Rb1 28.Nb1 Rc8 29.Rf5 Rc6 30.Kh2 Rd6+–) 21.Qe7 mate 1–0. usingprogram (2020) – leonardosousa (1720), kurnik, 2012.

6.Be2 b6

7.0–0 0–0 8.c4 (8.Nd4 e5 9.Nc6 Qe8 10.Ne5 a6+/–) 8...dc4 9.Bc4 Bb7 (9...a6 10.Qa4=) 10.d4 c6 11.a4 c5 (11...Rc8 12.Nbd2=) 12.Nbd2 (12.Nc3 cd4 13.Nd4 Ne5=) 12...Ne4 (12...Rc8 13.Rc1=) 13.Ne4+= Be4 14.dc5 (14.d5 ed5 15.Bd5 Bd5 16.Qd5 Qc7+=) 14…Nc5= ½–½. Thierling,Helmut – Schmieder,Wolfgang, NRW–ch op Seniors, 2003.

7.a4 Bb7 8.d4 a6 9.Nbd2 Bb4 10.0–0 0–0 11.c3 Bd6 12.c4 Re8 13.Qc2 e5 14.de5 Ne5 15.cd5 Nd5 16.Rfd1 Nb4 17.Qc3 Qf6 18.Nc4 Nf3 (18...Nc4 19.Qf6 gf6 20.Bc4 ab5 21.ab5 Ra1 22.Ba1+=) 19.Bf3 Qc3 20.Bc3 Bf3 21.Nd6 cd6? (better is 21...Bd1!? 22.Ne8 Re8 23.Rd1 a5+/–) 22.gf3+– a5 23.Rd6 Re6 (23...Rec8 24.Rad1 Nc2 25.Be5+–) 24.Rad1 Rb8 (24...Rf8+–) 25.Rd8 Re8 26.Re8 Re8 27.Bd4 Rd8 28.Rc1 Nd5 (28...f6 29.Bb6 Ra8 30.Bc7+–) 29.e4 Nf4 30.Bb6 Ra8 31.Rb1 (better is 31.Kf1 Ne6 32.Bc7+–) 31...h6 (31...f5 32.Rd1 fe4 33.fe4+–) 32.Be3 (better is 32.Bc7 Ne6 33.b6 Kh7+–) 32...Ne6 33.b6 Rb8 (33...Nd8 34.Rd1+–) 34.Rb5 Nd8 35.Ra5 Kh7 (35...Kf8 36.Ra7+–) 36.Rd5 Ne6 (36...Ra8 37.a5 Nb7 38.Rd7 Na5 39.Ra7+–) 37.a5 Nd8 (37...Ra8+–) 38.Rd8! Rd8 39.a6 g5 40.a7 Rd1 41.Kg2 Ra1 42.b7 1–0. forsetinn (2350) – jeich (1875), gameknot.com, 2014.

6.Be2 c6

7.0–0 cb5 8.Bb5 a6 9.Be2 Qb6 10.Qc1 0–0 11.d3 Ne8 12.Nbd2 Bf6 13.d4 Qc6 14.c4 dc4 15.Nc4 Nd6? 16.Nd6+– Qd6 17.Ba3 Qb8 18.Bf8 Kf8 19.Rb1 b6 20.Qc2 Bb7 21.Qh7 Ke7 22.Qc2 Qd8 23.Qa4 b5 24.Qa3 Ke8 25.Rbc1 Be7 26.Qd3 Nf6 27.Nd2 Nd5 28.Qh7 Bf8 29.Bf3 Rb8 30.Rfd1 Qg5 31.Qh5 Qh5 32.Bh5 Nf6 33.Bf3 Nd5 34.Nb3 Rc8 35.Rc8 Bc8 36.Rc1 Kd8 37.Nc5 Nb4 38.a3 Nd5 39.h4 Be7 40.h5 Bg5 41.Kf1 Be7 42.g4 Bg5 43.Ke2 Nc7 44.Bb7 Be7 45.Bc8 Kc8 46.Na6 Bd8 47.Nc7 Bc7 48.Rc5 (48...f6 49.f4+–; better is 48.g5 Kb8 49.Rc7 Kc7+–) 1–0. Genne,Rene – Kesselring,Rene, Pontresina SEM–HT II, 2000.

7.a4 0–0 8.0–0 c5 9.c4 b6 10.d4 h6 11.Nbd2 Bb7 12.a5 ba5 (12...Rc8 13.ab6 ab6 14.Ra7=) 13.Nb3+= dc4 14.Na5 Bd5 15.Bc4 Ne4? (better 15...Qb6+=) 16.Bd5+– ed5 17.Nc6 Bf6?? (better 17...Qe8 18.dc5 Bc5 19.Qd5 Qe6 20.Qe6 fe6+–) 18.Nd8 Rfd8 19.Ne5 c4 20.Nc6 Rdc8 (20...Re8 21.Qc2+–) 21.Na7 Rcb8 (21...Re8 22.Qc2 Rab8 23.Ra6+–) 22.Qg4 (22.Qc2 Rb7 23.Nc6 Re8+–) 22...Nf8 23.f3 Nd6 (23...c3 24.fe4 cb2 25.Rab1 Ra7 26.Rf6 Rb5 27.ed5+–) 24.Nc6 Ra1 (24...Nb5 25.Nb8 Rb8 26.Rfb1+–) 25.Ra1 Rb5 (25...Rc8 26.Nb4 c3 27.Bc3+–) 26.Ba3 Rb6 27.Bd6 Rc6 28.Bf8 Kf8 29.Ra8 (29.Ra8 Ke7 30.Ra7 Rc7 31.Rc7 Kf8 32.Qc8 Bd8 33.Qd8) 1–0. GuestDWRD – GuestDYHG, freechess.org, 2019.

5.Nf3 h6

6.a4 a5 7.c4 dc4 (7...Nbd7 8.cd5 ed5 9.Be2=) 8.Bc4+= c6 9.0–0 cb5 10.ab5 0–0 11.d4 Bb4 (11...Bd6 12.Ba3+=) 12.Ba3 Ba3 13.Na3 b6 14.Ne5 Bb7 15.Be2 Nbd7 (15...Nd5!?+=) 16.Nc6+– Bc6 17.bc6 Nb8 18.Rc1 Na6 19.Bf3 Rc8 20.Nb5 Nd5 21.e4 Ndb4 22.d5 (22.e5 Nc7 23.Nd6 Ra8+=) 22...ed5 (22...Nc5 23.Rc4+=) 23.ed5+– Nc5 24.Rc3 Re8 25.Qd4 Qf6?? (better 25...Na2 26.Re3 Rf8+–) 26.Qf6+– gf6 27.Nd6 Red8 (27...Kf8 28.Rd1 Na4 29.Rb3+–) 28.Nc8 Rc8 29.Rd1 Rd8 (29...Kh7+–) 30.c7 Rc8 31.Rc5! bc5 (31...Na6 32.Bg4 f5 33.Bf5 Nc7 34.Bc8 Nd5 35.Rcd5+–) 32.d6 (32.d6 Kg7 33.Bb7+–) 1–0. DEFFM – GuestYNPD, freechess.org, 2018.

6.a4 b6 7.Nc3 (7.Bd3 0–0=) 7...0–0 (7...c5 8.a5=) 8.a5+= Bb7 9.a6 Bc8 10.Be2 c6 11.0–0 c5 Black prepares d4 (11...cb5 12.Bb5 Qc7 13.Qe2+=) 12.Ne5+= Bd6 (12...Nfd7 13.f4+=) 13.f4+– Nfd7 (13...Nbd7 14.Nc6 Qc7 15.Qe1+–) 14.Ng4 (better 14.Nc4 Be7 15.Bf3+–) 14...Qh4? (better 14...f5 15.Nd5 ed5+–) 15.e4+– White prepares the advance f5 15...d4 (15...h5 16.g3 Qd8 17.Ne3+–) 16.Na4 (better 16.e5!? h5 17.Nf2 dc3 18.Bc3 Bc7+–) 16...e5 17.f5 (better 17.Ra3+–) 17...Qd8?? (better 17...h5 18.Nf2 Nf6+–) 18.Bc4+– Nf6 19.Nf6 Qf6 20.Bd5 Nc6 (20...Bd7 21.Ba8 Bb5 22.Nb6 ab6 23.a7+–) 21.Bc6 (21.bc6?! b5 22.Nb6 ab6+–) 21...Rb8 22.Qe2 Rd8 23.Ra3 (23.Rf3 Be7+–) 23...Bd7 (23...Be7 24.Bd5+–) 24.Rg3 (better 24.Bd5 c4 25.Rg3 Bb5+–) 24...Bc6 25.bc6 Rbc8 (25...Rdc8 26.Ba3 Be7 27.Ra1+–) 26.Qc4 Rc6 (26...Bf8 27.c7! Rc7+–) 27.Rg6 Qh4 (27...Qe7 28.f6 Qe6 29.Rg7 Kh8 30.Qd3+–) 28.f6 Kh7 (28...Rc7 29.Rg7 Kh8+–) 29.Qf7 Rg8 (29...Qf2 30.Rf2 Bf8 31.Rg7 Bg7 32.Qg7) 30.Rg7 Rg7 31.Qg7 1–0. Vendelo – Rania, internet free game, 2018.

6.c4 0–0!?=+.

6.c4 a6 7.Qa4=.

6.c4 dc4 7.Nc3= c6 8.a4 cb5 9.ab5 b6 10.Bc4 Bb7 11.d4 Nbd7 12.0–0 Qc7 13.Qe2 0–0 14.Bd3 Rfc8 15.Rfc1 Qd8 16.e4 Nh7 17.e5 Bf3 (17...Nhf8!?+–) 18.Qf3+– Bb4 19.Ne2 Ndf8 (19...Rc1 20.Bc1 Ba5 21.h4+–) 20.Rc8 Qc8 (20...Rc8 21.Ra7 Rc7 22.Ra6+–) 21.h4 Ba5 22.Be4 Rb8 23.d5 ed5 (23...Qd8 24.Nd4 Qh4 25.g3+–) 24.Bd5 Qc7 (24...Ne6 25.Nd4 Qe8 26.Nf5+–) 25.Rc1 (better 25.Nd4 Ne6 26.Ne6 fe6 27.Be6 Kh8 28.Bf5+–) 25...Qe7 (25...Qd7 26.Nd4 Ne6+–) 26.Ba3 Qh4 (26...Qe8 27.Rc7 Nd7+–) 27.Qf7 Kh8 28.Qg8 1–0. Silent Move (2115) – Marko Krale, redhotpawn.com (1), 2016.

6.c4 c6 7.a4 (7.cd5 ed5 8.Be2 Bg4=) 7...0–0 8.Be2 Bd7 (8...dc4 9.Bc4 a6 10.0–0=) 9.0–0 a6 10.Nc3 Bb4 (10...dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1=) 11.Qb3+= Qe7 12.d4 a5 (12...b6 13.Ne5+=) 13.Ne5 (13.c5 Bc3 14.Bc3 Ne4+–) 13...b6 (13...dc4 14.Bc4 Rc8 15.Rfc1+=) 14.Rfc1 c5 (14...Rc8 15.bc6 Nc6 16.cd5 ed5 17.Nd5 Nd5 18.Qd5 Ne5 19.de5+– (19.Qe5?! Rc1 20.Bc1 Qe5 21.de5 Rc8=)) 15.cd5 (15.Bf3 cd4 16.ed4 dc4 17.Nc4 Ra7 18.Nb6 Rd8+–) 15...Bc3 (15...cd4!? 16.ed4 Bc3 17.de6 Bb2 18.ef7 Rf7+=) 16.d6 Qd6 17.Qc3 Nd5 18.Qd2 cd4 (better 18...Qe7+–) 19.Qd4 (19.Nd7?! Nd7 20.Qd4 e5+–) 19...f6 20.Ng6 (20.Nd7?! Qd7 21.Bf3 Rf7+–) 20...Rd8 (20...Rc8 21.Rc8 Bc8+–) 21.Ba3 Nb4 (21...e5 22.Qd2 Qe6+–) 22.Qd6 1–0. DEFFM – GuestLDWZ, freechess.org, 2018.

6.d4 0–0 7.Bd3 c5 8.c4 dc4 (8...a6 9.cd5 ed5 10.dc5 ab5 11.0–0=) 9.Bc4= cd4 10.ed4 Qc7 (10...a6 11.Nc3=+) 11.Qb3 Bd7 (11...a6 12.Nc3=) 12.0–0 b6? (12...a6!? 13.Nc3 ab5 14.Nb5 Qd8=) 13.Ne5 (13.d5 Kh8 14.de6 Be6 15.Be6 fe6 16.Qe6 Qd7+–) 13...Rd8? (better 13...a6 14.Rc1 Rc8+–) 14.Qf3+– Nd5?? (14...a6 15.Qa8 ab5+–) 15.Qf7 Kh8 16.Bd5 ed5 17.Qe7 Re8 18.Qf7 Qd8 (18...Qd6 19.Nc3 Qe6 20.Ng6 Kh7 21.Nf8 Rf8 22.Qf8 Be8+–) 19.Qd5 Bb5 20.Nf7 Kh7 21.Nd8 Bf1 22.Kf1 Nc6 23.Nc6 Rac8 24.Qf5 Kh8 (24...Kg8 25.Qd7 Rf8 26.d5 Rf7 27.Qc8 Kh7 28.Qe8 Rf5 29.Ne7 Rf2 30.Kf2 b5 31.Qg8) 25.d5 Rf8 (25...Rc7 26.d6 Rec8 27.dc7 Rc7 28.Nd2 a5 29.Re1 Rc8 30.Qc8 Kh7 31.Qf5 Kg8 32.Re8) 26.Qd7 (26.Qd7 Rf2 27.Kf2 Rf8 28.Kg3 Rf6 29.Qe8 Kh7 30.Ne7 h5 31.Qg8 Kh6 32.Qh8 Kg5 33.h4) 1–0. DEFFM – GuestDMPH, freechess.org, 2019.

6.Be2 0–0 7.0–0 Nbd7 8.a4 (8.Bd4 c5 9.bc6 bc6=) 8...b6 (8...Bd6 9.a5=) 9.c4 (9.a5 ba5 10.Ra5 c6=) 9...Bb7 10.d3 (10.a5 dc4 11.Bc4 c6=) 10...dc4 11.d4 (11.dc4 a6=) 11...a5 (11...c6 12.Bc4 Rc8 13.Nbd2=) 12.Na3 Ne4 13.Nc4 (13...c6 14.Qd3 cb5 15.ab5=). Welti,Manfred – Tejler, corr SOK–89–33, 1989.

6.Be2 Qd6 7.a4 c6 8.c4 dc4 (8...Nbd7 9.Nc3+=) 9.Bc4 cb5 10.Bb5 (10.ab5 Nbd7+=) 10...Nbd7 (10...Nc6!?=) 11.0–0+– 0–0?? (better 11...Qb8+–) 12.Ba3+– Nc5 13.d4 b6 (13...Qc7 14.dc5 Bc5 15.Bc5 Qc5 16.Nbd2+–) 14.dc5 bc5 15.Qd6 Bd6 16.Rd1 Be7 17.Ne5 Bb7 18.Bc6 Rfd8 19.Nd2 Rab8 20.Bb7 Rb7 21.Nc6 Rdd7 (21...Rd3 22.Nc4 Rd1 23.Rd1+–) 22.Ne7 Re7 23.Bc5 Rec7 24.Bd4 Nd5 25.Rdc1 Re7 (25...f6 26.f4+–) 26.Rab1 (26.Nc4 f6+–) 26...Rb1 27.Rb1 Rc7 28.h3 Rc2 (28...f6 29.f4+–) 29.Rb8 Kh7 30.Nb3 Ra2 (30...a6 31.Ra8 Nb4 32.f4+–) 31.a5 (31.Rb7 Kg6 32.Ra7 Nb4+–) 31...Ne7 (31...a6 32.Bb6 Nc3 33.Nc5 Ra1 34.Kh2+–) 32.Ba7 Nc6 33.Rb7 Ra3 (33...Na5 34.Na5 Ra5 35.Rf7+–) 34.Nd4 (34.Bd4 Nd4 35.ed4 h5+–) 34...Nd4 (34...Na5 35.Rf7 e5 36.Ne6+–) 35.Bd4 Ra5 (35...e5 36.Bb6 Kg6 37.Kh2+–) 36.Rf7 Rg5 37.h4 Rf5 1–0. Dionizio,Cristiano Miguel Na (1765) – Palma,FMJ, Beja op, 2010.

5.f4 0–0=+

6.Bd3 c5 7.Nf3 (7.bc6 bc6 A) 8.Nc3 Ba6 (8...c5 9.Nf3 Nc6 10.Bb5 Rb8 11.Rb1 Nb4+=) 9.Ba6 Na6 10.Nf3 Rb8 11.Rb1 Qc7+=; B) 8.Nf3 Ba6 9.Ba6 Na6 10.0–0 Qb6 11.Be5 Nd7+=) 7...c4 (7...a6 8.a4 Bd7 (8...c4 9.Be2 ab5 10.ab5 Ra1 11.Ba1 Bd7=; 8...Qe8 9.Nc3 Bd7 10.Be2 c4 11.Qb1 ab5=; 8...Qb6 9.a5 Qd6 10.Be5 Qd7 11.b6 Nc6=) 9.Nc3 c4 10.Be2 ab5 11.ab5 Ra5+=) 8.Be2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qa5 (11...Qb6=) 12.Nc3 Bd7 13.Qb1 1–0. Buss,Michael – Johnson,Bryan, USCF87CA111, 1987.

6.Nf3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Be7 6.Nf3 0–0).

6.Bd3 a6

7.a4 Nbd7 8.Nf3 =+.

7.Nf3 ab5 8.Bb5 b6 =+.

7.a4 ab5

8.ab5 Ra1

9.Ba1 Nbd7

10.Nf3 Ne4 11.0–0 f5 12.Be2 Nd6 13.Qc1 Bf6 14.Na3 c6 15.bc6 bc6= 16.Ne5 Be5 17.fe5+= Nf7 18.d4 Ng5 19.c4 Ba6 20.Re1 Qa8 21.Bc3 Rb8 22.Qc2 Ne4 23.Bd3 Rb7 24.Rc1 Nb6 25.Be1 h6 26.Be4 de4 27.Qc3 Nd7 28.Rb1 Rb1 29.Nb1 Qb7 30.Na3 Qb6 31.Bd2 Kf7 32.g3 Nf8 33.Qb4 Qb4 34.Bb4 Nd7 35.Ba5 g5 36.Kf2 Ke8 37.Ke2 c5 38.Nb5 Kf7 39.Kd2 cd4 40.ed4 f4+/– 41.Nd6 Kg6 42.Kc3 e3 43.Kd3 Nb8 44.Ke4 Nc6 45.Bc3 e2 46.gf4 gf4 47.Bd2 f3 48.Kf3+/– Nd4 49.Ke3 Nf5 50.Ke2+/– Nd6 51.ed6 Bc4 52.Ke3 Bb5 53.Kd4 h5 54.Kc5 Ba4 55.Kb6 Kf7 56.Kc7 Ke8 57.Bf4 ½–½. Tartakower,Savielly – Maroczy,Geza, New York, 1924.

10.Nf3 Bb4

11.0–0 Bc5 12.Qe2 Qe7 13.Ne5 Ne4 14.Be4 de4 15.Bd4 =.

11.0–0 Nc5 12.Be2 Nce4 13.Bd4 Be7 14.Nc3 Nc3 15.Bc3 =.

11.0–0 Qe7 12.Be2 Ne4 13.Bd4 f6 14.d3 Nd6 15.c3 =.

11.0–0 Be7 12.Nc3 c5 13.Be2 Qb6 14.Qe1 Qd6 15.Na4 =.

11.0–0 Qe8 12.Be2 Qe7 13.Be5 Ne5 14.fe5 Ne4 15.d3 =.

11.Bb2 c5 12.Bc3 Ba5 13.0–0 Bc7 14.Bb2 Bd6 15.Be2 =.

11.Bb2 Nc5 12.Be2 Nce4 13.0–0 Qe7 14.Ne5 Bd7 15.d3 =.

11.Bb2 c6 12.0–0 Nc5 13.Qe2 Nfe4 14.Be4 Ne4 15.d3 =.

11.Bb2 Ne4 12.Be4 de4 13.Ng5 e5 14.Ne4 Qh4 15.g3 +=.

11.Bb2 Qe7 12.Be2 Bd6 13.0–0 c5 14.bc6 bc6 15.Be5 =.

11.Bc3 Bc3 12.Nc3 Qe7 13.0–0 e5 14.fe5 Ne5 15.Ne5 =.

11.Bc3 Bc5 12.Qe2 Bd6 13.0–0 c5 14.bc6 bc6 15.Be5 =.

11.Bc3 Bd6 12.Be2 Ne4 13.Bb2 Qe7 14.0–0 e5 15.fe5 =.

11.Bc3 Qe7 12.0–0 Bc3 13.Nc3 e5 14.fe5 Ne5 15.Ne5 =.

11.Bc3 Be7 12.Bb2 c5 13.0–0 c4 14.Be2 Qa5 15.Nc3 =.

11.Nc3 c5 12.Na2 Ba5 13.0–0 Qb6 14.c4 Rd8 15.Qc2 =.

11.Nc3 Nc5 12.Be2 Nce4 13.Ne4 Ne4 14.0–0 c6 15.bc6 =.

11.Nc3 Bd6 12.Be2 Re8 13.0–0 e5 14.fe5 Ne5 15.Na4 =.

11.Nc3 Qe7 12.0–0 Bd6 13.Be2 Re8 14.Bb2 e5 15.Nh4 =.

11.Nc3 Re8 12.0–0 Bd6 13.Be2 e5 14.fe5 Ne5 15.Na4 =.

11.Bd4 c5 12.Bc3 Bc3 13.Nc3 Re8 14.0–0 Qc7 15.Qe1 =.

11.Bd4 Nc5 12.Be2 Ncd7 13.Ne5 Ne4 14.0–0 Ne5 15.fe5 =.

11.Bd4 Bd6 12.Ne5 Nc5 13.Be2 Nfd7 14.0–0 f6 15.Nd7 =.

11.Bd4 Ne4 12.c3 Bc5 13.Qc2 Bd4 14.cd4 Ndf6 15.Nc3 +=.

11.Bd4 Qe7 12.Be2 c5 13.Be5 Ne5 14.fe5 Nd7 15.0–0 =.

11.Qe2 c5 12.bc6 bc6 13.0–0 Bb7 14.Nc3 c5 15.Bb5 =.

11.Qe2 c6 12.Bb2 c5 13.c3 Ba5 14.c4 h6 15.0–0 =.

11.Qe2 Bd6 12.0–0 c5 13.bc6 bc6 14.Be5 Be5 15.fe5 =.

11.Qe2 Qe7 12.Ne5 Ne4 13.Be4 de4 14.Qc4 f6 15.Nd7 =.

11.Qe2 Be7 12.Nc3 Bd6 13.0–0 Qe7 14.Nd1 e5 15.fe5 =.

11.Be2 c5 12.bc6 bc6 13.0–0 c5 14.Bc3 Bc3 15.Nc3 =.

11.Be2 c6 12.Nc3 Qa5 13.Bb2 c5 14.Qa1 Qc7 15.0–0 =.

11.Be2 Ne4 12.Bb2 Qe7 13.0–0 c6 14.c4 Nd6 15.cd5 =.

11.Be2 Qe7 12.Bb2 Ne4 13.0–0 Rd8 14.Bd4 Bc5 15.Bc5 =.

11.Be2 Qe8 12.0–0 Ne4 13.c4 Bc5 14.Qc2 Qe7 15.Nc3 +=.

11.Be5 Bc5 12.0–0 Ne5 13.fe5 Ne4 14.c4 f5 15.Qc2 =.

11.Be5 Nc5 12.Be2 Nce4 13.0–0 Bc5 14.Bd4 Bd4 15.Nd4 =.

11.Be5 Ne4 12.Bb2 c6 13.0–0 Ndc5 14.Be2 cb5 15.Bd4 =.

11.Be5 Ne5 12.fe5 Ne4 13.0–0 Bd7 14.Qe2 f5 15.c4 =.

11.Be5 Be7 12.Ba1 c5 13.0–0 c4 14.Be2 Qa5 15.Nc3 =.

11.Ne5 Nc5 12.Be2 Nfe4 13.0–0 f6 14.Nf3 Qe7 15.c3 =.

11.Ne5 Ne4 12.0–0 f6 13.Nd7 Bd7 14.c4 Nc5 15.Be2 =.

11.Ne5 Ne5 12.fe5 Ne4 13.Qg4 Qg5 14.Qg5 Ng5 15.Bd4 =.

11.Ne5 Qe7 12.0–0 Ne4 13.Be2 f6 14.Nd3 Bd6 15.Nc3 =.

11.Ne5 Ne8 12.0–0 Nc5 13.Be2 f6 14.Nf3 Nd6 15.Bd4 =.

11.Bf1 Nb6 12.Be2 Bd7 13.Bd4 Nc4 14.c3 Be7 15.Qb3 =.

11.Bf1 c5 12.Be2 Qb6 13.0–0 c4 14.Nc3 Bc3 15.Bc3 =.

11.Bf1 c6 12.Nc3 Qa5 13.Bb2 c5 14.Qa1 Qb6 15.Be2 =.

11.Bf1 Ne4 12.Be2 c6 13.0–0 Qb6 14.Bd3 f6 15.Qe2 =.

11.Bf1 Ng4 12.Bc3 Bd6 13.Bd3 Ngf6 14.0–0 c5 15.bc6 =.

10.Nf3 c5

11.0–0 Qa5 12.Nc3 Nb6 13.Ne5 c4 14.Be2 Bb4 15.Qb1 =.

11.0–0 Qb6 12.c4 Rd8 13.Qc2 dc4 14.Bc4 Nd5 15.Nc3 =.

11.0–0 c4 12.Be2 Qa5 13.Nc3 Nb6 14.Qb1 Bb4 15.Ne5 =.

11.0–0 Qc7 12.c4 dc4 13.Bc4 b6 14.Nc3 Bb7 15.Bb2 =.

11.0–0 Bd6 12.Be2 Qc7 13.c4 Rd8 14.Qc2 b6 15.cd5 =.

11.Nc3 b6 12.0–0 Bb7 13.Qe1 Qc7 14.Qh4 Re8 15.Ng5 =+.

11.Nc3 c4 12.Be2 Qa5 13.0–0 Nb6 14.Ne5 Bb4 15.Qb1 =.

11.Nc3 Qc7 12.0–0 c4 13.Be2 Rd8 14.Qe1 b6 15.Nd4 =.

11.Nc3 Bd6 12.0–0 Re8 13.Na4 c4 14.Be2 Qa5 15.Nc3 =.

11.Nc3 Re8 12.0–0 c4 13.Be2 Qc7 14.Qe1 b6 15.Qg3 =.

11.bc6 bc6 12.0–0 c5 13.Nc3 c4 14.Be2 Ba6 15.Nd4 =+.

11.Be2 Qa5 12.Nc3 Bd6 13.Bb2 e5 14.fe5 Ne5 15.0–0 =.

11.Be2 b6 12.Nc3 Bb7 13.0–0 Qc7 14.Kh1 Ra8 15.Qe1 =+.

11.Be2 Qb6 12.c4 dc4 13.Bc4 Ne4 14.Qc2 Nef6 15.0–0 =.

11.Be2 c4 12.0–0 Qa5 13.Nc3 Nb6 14.Qb1 Bb4 15.Ne5 =.

11.Be2 Qc7 12.0–0 b6 13.Qe1 Bb7 14.Nc3 d4 15.ed4 =.

10.Nf3 Nc5

11.Qe2 Nd3 12.Qd3 Ne4 13.0–0 c5 14.bc6 bc6 15.Nc3 =.

11.Qe2 Nfd7 12.Nc3 Bf6 13.0–0 Nd3 14.Qd3 Nc5 15.Qe2 =.

11.Qe2 Nfe4 12.0–0 f6 13.Bb2 Nd3 14.Qd3 c5 15.c4 =.

11.Qe2 Qe8 12.0–0 Bd7 13.Nc3 Bd6 14.Ne5 Nd3 15.Qd3 =.

11.Qe2 Ng4 12.0–0 Nd3 13.Qd3 c5 14.bc6 bc6 15.Qc3 =.

11.Be2 c6 12.bc6 bc6 13.0–0 Ba6 14.d3 Ncd7 15.c4 =.

11.Be2 Bd7 12.Nc3 c6 13.0–0 Qc7 14.Qb1 Ra8 15.b6 =.

11.Be2 Nce4 12.0–0 c6 13.bc6 bc6 14.Nc3 Bb4 15.Na2 =.

11.Be2 Nfe4 12.d3 Nd6 13.0–0 Nf5 14.Qd2 Qd7 15.Nc3 =.

11.Be2 Qe8 12.0–0 Bd7 13.Nc3 Nfe4 14.Ne4 de4 15.Nd4 =.

10.Nf3 c6

11.0–0 Qa5 12.Nc3 c5 13.Qe1 c4 14.Be2 Nb6 15.Qg3 =.

11.0–0 Qb6 12.Ne5 cb5 13.Bd4 Bc5 14.Nd7 Nd7 15.Bh7 +/–.

11.0–0 c5 12.c4 Nb6 13.Bf6 Bf6 14.Qc2 Nc4 15.Bh7 +=.

11.0–0 Nc5 12.bc6 bc6 13.Be2 Ba6 14.d3 Ncd7 15.c4 =.

11.0–0 Qc7 12.Bb2 c5 13.c4 dc4 14.Bc4 Nb6 15.Be2 =.

11.Bb2 Qa5 12.Nc3 Nc5 13.Be2 Qb4 14.Qa1 cb5 15.Nb5 =.

11.Bb2 Qb6 12.Nc3 Bd6 13.Be2 Re8 14.Na4 Qa5 15.c4 =.

11.Bb2 c5 12.Nc3 c4 13.Be2 Qa5 14.Qa1 Qa1 15.Ba1 =.

11.Bb2 Nc5 12.Qe2 Qa5 13.Nc3 Qb4 14.Ba1 Nd3 15.Qd3 =+.

11.Bb2 Ne4 12.0–0 Ndc5 13.bc6 bc6 14.Be2 Na4 15.Ba1 =.

11.Nc3 Nc5 12.Be2 Bd7 13.0–0 Qc7 14.bc6 bc6 15.Nb1 =.

11.Nc5 cb5 12.Nb5 Ne4 13.0–0 Ndc5 14.Be2 Bd7 15.Bd4 =.

11.Nc5 Qb6 12.0–0 Rd8 13.Ne5 Qc7 14.Na4 cb5 15.Bb5 =.

11.Nc5 c5 12.Be2 Nb6 13.0–0 d4 14.Nb1 Nbd5 15.ed4 =.

11.Nc5 Bd6 12.0–0 Qb6 13.bc6 bc6 14.Qb1 Qc7 15.Qe1 =.

11.bc6 bc6 12.Nc3 c5 13.0–0 Bb7 14.Qe1 c4 15.Be2 =.

11.Be2 Qa5 12.Nc3 Ne4 13.Ne4 de4 14.Nd4 Bh4 15.g3 =.

11.Be2 cb5 12.Bd4 Nb8 13.Bb5 Bd7 14.Qe2 Nc6 15.Bf6 =.

11.Be2 Qb6 12.Nc3 Bb4 13.0–0 Bd6 14.Qb1 c5 15.Qe1 =.

11.Be2 c5 12.0–0 c4 13.Bd4 Ne4 14.d3 cd3 15.Bd3 =.

11.Be2 Ne4 12.Nc3 cb5 13.Nb5 Bh4 14.g3 Be7 15.Bd4 =.

11.Ne5 Qa5 12.bc6 Qa1 13.cd7 Nd7 14.c3 Nc5 15.Bc2 =+.

11.Ne5 cb5 12.0–0 b4 13.Bd4 Nc5 14.Be2 Nce4 15.Qc1 =+.

11.Ne5 c5 12.c4 Nb6 13.Qc2 dc4 14.Nc4 Nc4 15.Bc4 =.

11.Ne5 Ne4 12.Be4 de4 13.bc6 Ne5 14.cb7 Nd3 15.cd3 =.

11.Ne5 Ne5 12.fe5 Nd7 13.Qh5 g6 14.Qh3 Bh4 15.g3 =+.

10.Nf3 Bd6

11.0–0 Bb4 12.Ne5 Ne4 13.Be4 de4 14.Qe2 Nb6 15.Nc3 =.

11.0–0 c5 12.Be2 Qa5 13.Bb2 c4 14.Nc3 Qb4 15.Qa1 =.

11.0–0 c6 12.Be2 Qc7 13.Qe1 Be7 14.Nc3 cb5 15.Bb5 =.

11.0–0 Qe7 12.Ne5 Ne4 13.Bd4 f6 14.Nc4 e5 15.Be4 =.

11.0–0 Be7 12.Be2 c5 13.Qe1 Qb6 14.Nc3 Rd8 15.Qf2 =.

11.Bb2 c5 12.c4 dc4 13.Bc4 Nb6 14.Be2 Nbd5 15.0–0 =.

11.Bb2 c6 12.Nc3 Qb6 13.Be2 Qc5 14.0–0 Rd8 15.Qa1 =.

11.Bb2 Ne4 12.Nc3 Nc3 13.Bc3 f6 14.0–0 Nc5 15.Be2 =.

11.Bb2 Qe7 12.0–0 c5 13.Ne5 c4 14.Be2 Bc5 15.Bd4 =.

11.Bb2 Re8 12.0–0 c5 13.bc6 bc6 14.Ne5 Qb6 15.Bc3 =.

11.Bc3 c5 12.Be2 Qb6 13.0–0 c4 14.Nd4 Re8 15.Qe1 =.

11.Bc3 Nc5 12.Be2 Nfe4 13.Bd4 c6 14.0–0 cb5 15.Bb5 =.

11.Bc3 c6 12.0–0 c5 13.Be5 Be7 14.c4 dc4 15.Bc4 =.

11.Bc3 Ne4 12.Be4 de4 13.Ng5 e5 14.0–0 Nc5 15.Qh5 =.

11.Bc3 Qe7 12.Be2 Ne4 13.0–0 Nc3 14.Nc3 Qf6 15.d4 =.

11.Nc3 e5 12.fe5 Ne5 13.Ne5 Be5 14.Ne2 Ng4 15.Be5 =.

11.Nc3 Qe7 12.0–0 Re8 13.Na4 c5 14.bc6 bc6 15.Ne5 =.

11.Nc3 Qe8 12.0–0 e5 13.fe5 Ne5 14.Be2 Nf3 15.Bf3 =.

11.Nc3 Re8 12.0–0 Qe7 13.Na4 e5 14.fe5 Ne5 15.Be5 =.

11.Nc3 Kh8 12.0–0 Qe7 13.Be2 Re8 14.Na4 e5 15.Nh4 =.

11.Bd4 c5 12.bc6 bc6 13.0–0 c5 14.Be5 Be7 15.Bb5 =.

11.Bd4 c6 12.0–0 Qc7 13.bc6 bc6 14.Nc3 e5 15.fe5 =.

11.Bd4 Ne4 12.0–0 f6 13.Nc3 Nc3 14.Bc3 Nc5 15.Be2 =.

11.Bd4 Qe7 12.Ne5 Nc5 13.Be2 Nfe4 14.0–0 f6 15.d3 =.

11.Bd4 Re8 12.Ne5 Bc5 13.0–0 Bd4 14.ed4 c5 15.bc6 =.

11.Qe2 c5 12.c4 dc4 13.Bc4 Nb6 14.0–0 Nc4 15.Qc4 =.

11.Qe2 Nc5 12.Bd4 Bd7 13.0–0 Nfe4 14.Be4 Ne4 15.c4 =.

11.Qe2 c6 12.0–0 c5 13.c4 b6 14.Ne5 Bb7 15.Bc2 =.

11.Qe2 Ne4 12.Be4 de4 13.Ng5 Nc5 14.Bd4 h6 15.Bc5 +=.

11.Qe2 Qe7 12.0–0 c5 13.bc6 bc6 14.Ne5 Bb7 15.Nd7 =.

11.Be2 c5 12.bc6 bc6 13.0–0 Qc7 14.c4 Re8 15.cd5 =.

11.Be2 c6 12.Bb2 Qb6 13.0–0 Ne4 14.Ba3 Ba3 15.Na3 =.

11.Be2 Qe7 12.0–0 c5 13.Ne5 Ne8 14.c4 Nb6 15.d3 =.

11.Be2 Qe8 12.Bb2 Ne4 13.0–0 e5 14.fe5 Ne5 15.Ne5 =.

11.Be2 Re8 12.Bc3 Ne4 13.Be5 Bf8 14.0–0 Ne5 15.fe5 =.

11.Be5 Be5 12.fe5 Ng4 13.0–0 h6 14.Be2 Nde5 15.Ne5 =+.

11.Ne5 Nc5 12.Be2 Nfd7 13.0–0 f6 14.Nd7 Nd7 15.Nc3 =.

11.Ne5 Ne4 12.0–0 f6 13.Nc4 Be7 14.Be4 de4 15.Nc3 =.

11.Ne5 Qe7 12.Bd4 Nc5 13.Be2 Ne8 14.Nc3 Qh4 15.g3 =.

11.Ne5 Be7 12.Bd4 Ne4 13.Be4 de4 14.Nc3 Bh4 15.g3 =.

11.Ne5 Ne8 12.0–0 Nc5 13.Be2 f6 14.Nf3 Nd7 15.c4 =.

11.Bf1 c5 12.Bb2 Qb6 13.c4 Re8 14.Be2 e5 15.fe5 =.

11.Bf1 c6 12.Qc1 Qa5 13.Bc3 Qc7 14.Qb2 Be7 15.Be2 =.

11.Bf1 Ne4 12.d3 Nef6 13.Be2 Qe7 14.Ne5 Be5 15.fe5 =.

11.Bf1 Qe7 12.Be2 e5 13.fe5 Ne5 14.0–0 Re8 15.b6 =.

11.Bf1 Re8 12.Be2 e5 13.fe5 Ne5 14.0–0 c5 15.bc6 =+.

10.Nf3 Qe8

11.0–0 c5 12.Be2 b6 13.Bb2 Bd6 14.Ne5 Bb7 15.d3 =.

11.0–0 Nc5 12.Be2 Bd7 13.Nc3 Nce4 14.Qb1 Bc5 15.Ne4 =.

11.0–0 c6 12.Nc3 c5 13.Qe1 c4 14.Be2 Nb6 15.Qg3 =.

11.0–0 Qd8 12.Nc3 Nc5 13.Be2 Qd6 14.Bb2 Nfe4 15.d3 =.

11.0–0 Ne4 12.Be4 de4 13.Ng5 Nc5 14.Bd4 f5 15.Nc3 =.

11.Be2 Qd8 12.0–0 c5 13.Qe1 Qb6 14.Nc3 Qd6 15.Bb2 =.

10.Nf3 Re8

11.0–0 c5 12.bc6 bc6 13.Ne5 Qc7 14.Qf3 Bb7 15.Qh3 =.

11.0–0 c6 12.Ne5 Qc7 13.Qf3 Nc5 14.Be2 Bd7 15.bc6 =.

11.0–0 Nc5 12.Be2 Nce4 13.Ne5 Bc5 14.Bd4 Bd4 15.ed4 =.

11.0–0 Ne4 12.Be2 c5 13.bc6 bc6 14.Nc3 Bb7 15.Ne4 =.

11.0–0 Rf8 12.Ne5 Ne4 13.Qg4 Ndf6 14.Qf3 Bb4 15.Bd4 =.

11.Bb2 c5 12.0–0 c4 13.Be2 Qa5 14.Nc3 Bb4 15.Nd4 =.

11.Bb2 Nc5 12.Be2 c6 13.Ne5 cb5 14.Bb5 Bd7 15.Nd7 =.

11.Bb2 c6 12.0–0 c5 13.Be2 Qa5 14.c4 dc4 15.Bc4 =.

11.Bb2 Bd6 12.0–0 c5 13.bc6 bc6 14.Ne5 Qb6 15.Bc3 =.

11.Bb2 Ne4 12.0–0 Nb6 13.Bd4 c5 14.bc6 bc6 15.Ne5 =.

11.Bc3 c5 12.bc6 bc6 13.0–0 Qc7 14.Ne5 Nc5 15.Be2 =.

11.Bc3 Nc5 12.Be2 Nfe4 13.0–0 Nc3 14.Nc3 Qd6 15.d4 =.

11.Bc3 c6 12.0–0 Qb6 13.Be5 Ne5 14.fe5 Nd7 15.bc6 =.

11.Bc3 Bd6 12.Be2 Ne4 13.Be5 Bf8 14.0–0 f6 15.Bb2 =.

11.Bc3 Ne4 12.0–0 Nc3 13.Nc3 Nc5 14.Qe2 Qd6 15.Ne5 =.

11.Nc3 Bb4 12.Be2 Bd6 13.0–0 e5 14.fe5 Ne5 15.Na4 =.

11.Nc3 c5 12.Be2 Nb6 13.0–0 d4 14.Nb1 Nbd5 15.Ne5 =.

11.Nc3 Bc5 12.Bb2 Bd6 13.0–0 e5 14.fe5 Ne5 15.Be2 =.

11.Nc3 Nc5 12.Be2 Qd6 13.0–0 Bd7 14.Ne5 Ra8 15.Bb2 =.

11.Nc3 Bd6 12.0–0 e5 13.fe5 Ne5 14.Ne5 Be5 15.Ne2 =.

11.Bd4 c5 12.Bb2 c4 13.Be2 Qb6 14.Nc3 Bc5 15.0–0 =.

11.Bd4 c6 12.Be2 c5 13.Bb2 c4 14.0–0 Qa5 15.Nc3 =.

11.Bd4 Bd6 12.Ne5 Bc5 13.0–0 Bd4 14.ed4 c5 15.bc6 =.

11.Be2 c5 12.0–0 Qc7 13.Qe1 b6 14.Qg3 Bb7 15.Bb2 =.

11.Be2 c6 12.Bb2 Qa5 13.Nc3 Qb4 14.Ba1 Bd6 15.bc6 =.

11.Be2 Bd6 12.Ne5 Ne4 13.0–0 f6 14.Nd7 Bd7 15.d3 =.

11.Be2 Ne4 12.0–0 c5 13.bc6 bc6 14.Nc3 Nef6 15.Qe1 =.

11.Be2 Rf8 12.Nc3 c6 13.0–0 c5 14.Qe1 Qb6 15.Bb2 =.

11.Be5 c5 12.bc6 bc6 13.0–0 Ne4 14.Nd4 Qb6 15.Be4 =.

11.Be5 Ne4 12.0–0 Ne5 13.fe5 Rf8 14.c4 c6 15.cd5 =.

11.Be5 Ne5 12.fe5 Nd7 13.c3 Rf8 14.Qc2 g6 15.0–0 =.

11.Be5 Rf8 12.Bc3 Qe8 13.Be2 c6 14.0–0 Nc5 15.Bb4 =.

11.Be5 Ng4 12.Bb2 Nc5 13.Be2 Na4 14.Ba1 Qd6 15.0–0 =.

11.Ne5 Ne4 12.0–0 Rf8 13.Qg4 Ndf6 14.Qf3 Qd6 15.Be2 =.

10.Nf3 h6

11.0–0 Bb4 12.Be2 Bc5 13.Bd4 Bd4 14.Nd4 e5 15.fe5 =.

11.0–0 c5 12.Qe1 c4 13.Be2 Qb6 14.Nc3 Nc5 15.Nd4 =.

11.0–0 Nc5 12.Be2 Nce4 13.Ne5 Bc5 14.Bd4 Bd4 15.ed4 =.

11.0–0 c6 12.Ne5 Qc7 13.Be2 Ne4 14.Nc3 Ne5 15.Ne4 =.

11.0–0 Ne4 12.Nc3 Ndc5 13.Be2 Nc3 14.Bc3 Ne4 15.Bd4 +=.

11.Ne5 Bb4 12.0–0 Ne4 13.Bd4 Ne5 14.fe5 c5 15.Bb2 =.

11.Ne5 Nc5 12.Be2 Qd6 13.0–0 Bd7 14.Bd4 Ra8 15.Nc3 =.

11.Ne5 Ne4 12.0–0 Ndc5 13.Be2 Qe8 14.Bd4 f6 15.Nf3 =.

11.Ne5 Ne5 12.fe5 Nd7 13.0–0 f6 14.ef6 Bf6 15.Nc3 =.

11.Ne5 Qe8 12.0–0 Ne4 13.Nc3 Ndc5 14.Ne4 Nd3 15.cd3 =.

10.Nf3 Kh8

11.0–0 c5 12.Nc3 c4 13.Be2 Qb6 14.Nd4 Qd6 15.Qe1 =.

11.0–0 Nc5 12.Be2 Nce4 13.Bd4 Bd7 14.Nc3 Nc3 15.Bc3 =.

11.0–0 c6 12.Be2 c5 13.Nc3 Qb6 14.Qe1 c4 15.Nd4 =.

11.0–0 Ne4 12.Nc3 Ndc5 13.Be2 f6 14.Qe1 Qd6 15.Nd1 =.

11.0–0 Kg8 12.Be2 c5 13.bc6 bc6 14.Nc3 Bb7 15.Qe1 =.

11.Nc3 Bb4 12.Qe2 c5 13.bc6 bc6 14.0–0 c5 15.Bb5 =.

11.Nc3 c5 12.Be2 Nb6 13.Bb2 Qc7 14.0–0 Rd8 15.Qe1 =.

11.Nc3 Nc5 12.Be2 Nfe4 13.0–0 f6 14.Qe1 Qd6 15.Nd1 =.

11.Nc3 c6 12.0–0 Qc7 13.Bb2 Kg8 14.Qe1 Nc5 15.Be2 =.

11.Nc3 Kg8 12.Be2 Bb4 13.0–0 c5 14.Qe1 Qb6 15.Qh4 =.

6.Nf3 a6

7.a4 c5 8.c4 Nbd7 9.Na3 a5 10.Be2= b6 11.0–0 Bb7 12.Ne5 Qc7 13.Rc1 Bd6 14.d4 Ne4 15.Bd3 f5 16.cd5 ed5 17.Rf3 Ndf6 18.Rh3 Qe7 19.Bb1 cd4 20.ed4= Rac8 21.Nc2 g6 22.Ne1 Rc1 23.Bc1 Rc8 24.Bb2 Bb4 25.Be4 Ne4 26.N1d3= Bd6 27.Nc6 Bc6–/+ 28.bc6 Rc6 29.Qb3 Qe6 30.Ne5 Be5 31.fe5 Rc4 32.Rd3 Qc6–+ 33.h4 Rb4 (34.Qa2 Qc2 (34...Ra4?! 35.Ra3 Ra3 36.Ba3–+) 35.Qd5 Kg7 36.Qd7 Kh6–+; 33...Qa4 34.Qb6 Rc2 35.Qd8 Kg7 36.Qe7 Kh6 37.Qf8 Kh5 38.Ra3–+) 0–1. Rost,Wolfgang (1835) – Stimpel,Franz (2210), GER–chT Seniors MM–dLV, 2001.

7.a4 c6 8.Bd3 (8.Nc3 Nbd7=) 8...Ne4 (8...ab5 9.ab5 Ra1 10.Ba1 cb5 11.Bb5=) 9.0–0 (9.Nc3 Nc5+=) 9...Nc5 (9...ab5 10.ab5 Ra1 11.Ba1=) 10.Nc3+= Nd3 11.cd3 c5 12.Qe2 (12.Qb3 Nd7=) 12...Bd7 (12...Nd7 13.Rfb1=) 13.d4 c4 14.d3 cd3 (14...Qc7 15.Ne5 ab5 16.ab5 (worse is 16.Nb5 Bb5 17.ab5 Ra1 18.Ba1 Nd7+=) 16...Ra1 17.Ra1 cd3 18.Qd3+=) 15.Qd3+= Be8 (15...Qb6 16.Ne5+=) 16.Rfc1 (16.e4 de4 17.Qe4 Nd7+=) 16...Nd7+= 17.Nd2 (17.Ba3 f6+=) 17...ab5= 18.Nb5 (18.ab5 Ra1 19.Ra1 f6=) 18...Nb6+= 19.Qb3 Bc6 (19...Ra4 20.Ra4 Na4 21.Qa4+=) 20.Kf2 Qc7 0–1. Gjertsen,Petter – Mihajlov,Svetoslav (2070), Reykjavik Open, 2013.

7.a4 Nbd7 8.Nc3 =+.

7.Nc3 ab5 8.Bb5 c5 9.0–0= Bd7 10.Be2 c4 11.Ne5 Nc6 12.d4 Qb6 13.Rb1 Qa5 14.e4 Nd4 15.Nd7–/+ Ne2 16.Qe2 Nd7 17.ed5 Qc5 18.Kh1 ed5 19.Nd5 Bd6 20.Rfd1 Rfd8 21.Qg4 Bf8 22.a3 Kh8 23.Bc3 Qc6 24.Ne7 Qc7 25.Nd5 Qb8 26.f5 b5 27.f6 g6 28.Ne7 Nc5 29.Rd8 Qd8 30.Rb5 Ra3 31.Rc5 Rc3?? 32.Rc8+– Re3 33.h4 Re1 34.Kh2 Qd6 35.Qg3 Qf6 1–0. Crafty 19.01 – Doctor? 3.0, 2004.

7.Nc3 ab5 8.Bb5 c6 9.Be2 b5 10.0–0 Bc5 11.d4 Ba3 12.Qc1 Bd6 13.a3 Nbd7 14.Ng5 h6 15.Nf3 Nb6 16.Ne5 Qc7 17.Re1 Bb7 18.Ng4 Ng4–/+ 19.Bg4 Nc4 20.Ra2 Qe7 21.Nb1 b4–+ 22.Ba1 ba3 23.Nc3 Qh4 24.Be2 Ba6 25.Rd1 Rfb8 26.Bd3 Nb6 27.Re1 Bc4 28.Bc4 Nc4 29.Ne2 Bc7 30.Ng3 Ra7 31.Ne2 Rab7 32.Bc3 Bd6 33.Ra1 Ra7 34.Ra2 Ra6 35.Rd1 Bc7 36.Be1 Qg4 37.Nc3 Rb2 38.Bf2 Rab6 39.Ra1 R6b4 40.Nb1 Ra4 41.Re1? Ba5 42.Rd1? Qe2 43.Be1 Ne3 44.Bf2 Nd1 45.Bh4 Rc2 46.Qc2 0–1. EXchess 3.11 – Fritz 5.32, 2004.

7.Nc3 ab5 8.Bb5 c6 9.Be2 b5 10.a4 ba4 11.Na4 c5 12.0–0 Nc6 13.Ne5 Bb7 14.d3 Qd6 15.c4 d4 16.Bf3 de3 17.Qe1 e2 18.Qe2 Nd4 19.Bd4 Qd4 20.Qf2= Qf2 21.Kf2 Bf3 22.Kf3 Bd6 23.Nb6 Rab8 24.Nbd7 Be5 25.Ne5 Ra8 26.Ra8 Ra8 27.Rb1 Kf8? 28.Rb7+– h5 29.Rf7 Kg8 30.Rc7 Ra5 31.Rc6 Ng4 32.Ng4 hg4 33.Kg4 Kf7 34.f5 ef5 35.Kf5 Ke8 36.Ke6 Kd8 37.Kd5 Ra2 38.Rg6 Ke7 39.Rg7 Kf6 40.Rg3 Ra5 41.h4 Kf5 42.h5 Kf6 43.h6 Ra8 44.Rh3 Ra5 45.h7 Ra8 46.h8Q Rh8 47.Rh8 Ke7 1–0. Crafty 19.01 – Fritz 5.32, 2004.

7.Nc3 ab5 8.Bb5 Bd7 9.a4 =+.

7.Nc3 Bd7 8.Ne5 ab5 9.Nd7 Nbd7 10.Bb5 d4 11.ed4= Nb6 12.f5 Qd4 13.fe6 fe6 14.Qe2 e5 15.Nd1 Qc5 16.Qe5 Nbd5 17.Nc3 Bd6 18.Qe6 Kh8 19.Nd5 Nd5 20.Qg4 Rf7 21.Bc4 b5 22.Bd3 Ra4 23.Qh3 h5?? 24.Qh5+– Kg8 25.Qh7 Kf8 26.0–0–0 Nf6?? 27.Qh8 Ng8 28.Bh7 Ke7 29.Bg8 Ra8 (29...Rff4 30.Rde1 Rae4+–) 1–0. EXchess 3.11 – Comet B25, 2004.

7.Be2 ab5 8.Bb5 c6 9.Be2 b5 10.0–0 Nbd7 11.Ne5 Ne5 12.fe5 Nd7 13.Bg4 Qc7 14.d4 c5 15.Na3 Ba6 16.Be2 b4 17.Nb5 Qb8 18.Nd6 Be2 19.Qe2 Bd6 20.ed6 Qd6 21.dc5 Qc5 22.a3? ba3 23.Bd4 Qc6 24.Qd3 e5 25.Bc3 a2 26.Bb4 Rfb8 27.c3 Nf6 28.Rf2 Ng4 29.Re2 e4 30.Qd2 Qc7 31.g3 Qc4 32.Kh1 Qb3 33.h3 Ne5 34.Ra2 Qb1 35.Qe1 Qe1 36.Re1 Ra2 37.g4 (37.Kg1 Nf3 38.Kf1 Ne1 39.Ke1–+) 0–1. Comet B50 – Fritz 6, 2004.

7.Ne5 ab5 8.Bb5 c6 9.Be2 Ne4 10.0–0 f6 11.Nd3 c5 12.Nc3 Nc3 13.Bc3 Nc6 14.a3 Bd7 15.Bf3 Qc7 16.Qe2 Ra6 17.f5 Rd8 18.Nf4= d4 19.Bb2 ef5 20.ed4 cd4? 21.Ne6 Be6 22.Qe6 Kh8 23.Qf5 d3? 24.Be4+– Kg8 25.Qh7 Kf8 26.Bg6 Bc5 27.Kh1 Bd4 28.Bd4 Nd4 29.Qh8 Ke7 30.Qg7 Kd6 31.Rf6 Ne6 32.Qc7 Kc7 33.Bd3 Rad6 34.Raf1 Nc5 35.Rd6 Rd6 36.Rf3 b5 37.h4 Rd4 38.h5 Rh4 39.Rh3 Rh3 40.gh3 Kb7 41.Bb5 Ne4 1–0. Fritz 5.32 – Doctor? 3.0, 2004.

7.Ne5 Ne4 8.Qh5 f6 9.Nf3 ab5 10.Bb5 c6 11.Bd3 Qb6 12.Bc3 Ra2–/+ 13.0–0 Ra1 14.Ba1 Nd7 15.Nc3 Ndc5 16.Be4 de4 17.Nd4 Qc7 18.Bb2 e5 19.Nf5 Bf5 20.Qf5 g6 21.Qg4 ef4 22.Ne4 f5 23.Qf4 Qf4 24.Rf4 fe4 25.Ba3 Re8 26.Bb4 Nd3 27.cd3 Bb4 28.Kf2 Bd2 29.Ke2 Bc3 30.Re4 Re4 31.de4 b5 32.g4 c5 33.Kd3 Be5 34.h4 c4 35.Kc2 b4 36.Kc1 b3 37.g5 c3 38.h5 (38.Kb1–+) 0–1. Fritz 5.32 – Fritz 6, 2004.

7.a4 ab5

8.Bb5 b6 9.0–0 c6 10.Bd3 Ba6 11.Ba6 Na6 12.Ne5 Qc7 13.Nc3 Nc5 14.d4 Nce4–/+ 15.Ne4 Ne4 16.Qg4 Bd6 17.Rfb1 Rfd8 18.c3 h6 19.Qh5 Rdb8 20.Qg4 Nd2 21.Rd1 Be5 22.Rd2=+ Bd6 23.Rdd1 Qe7 24.Rdb1 Ra5 25.c4 dc4 26.Bc3 Raa8 27.e4 b5 28.ab5 Ra1–/+ 29.Re1?? Re1–+ 30.Be1 cb5 31.Bd2 b4 32.Bc1 0–1. Comet B25 – Fritz 5.32, 2004.

8.Bb5 c6 9.Be2 b6 10.0–0 Ba6 11.d3 Bc5 12.d4 Bd6=+ 13.Ne5 Be2 14.Qe2 Qc7 15.Nd2 Nbd7 16.Rf3 Ra7 17.Nd7 Nd7 18.Qd3 Rfa8–+ 19.Nb1 Ra4 20.Ra4 Ra4 21.Nc3 Ra5 22.Rh3 Nf6 23.Ne2 Qa7 24.Qc3 Ne4 25.Qe1 Ra2 26.Qb1 Nd2 27.Qd1 Rb2 28.Qd2 Qa4 29.Kf2 Qc2 30.Qc2 Rc2 31.Ke1 Bb4 32.Kf1 c5 33.f5 c4 34.fe6 fe6 35.Nf4 Rc1 36.Kf2 c3 37.Ke2 Re1! 38.Kd3 Rd1 39.Kc2 Rd2 40.Kb3 0–1. Comet B25 – Doctor? 3.0, 2004.

8.Bb5 c6 9.Be2 b6 10.0–0 Nbd7 11.Bd4 Ne4 12.Nc3 c5–/+ 13.Be5 Ne5 14.Ne5 Nc3 15.dc3 Bb7 16.Bb5 Qc7 17.Qh5 Bd6 18.Rf3 g6 19.Rg3 Be5 20.Qe5 Qe5 21.fe5 f6 22.ef6 Rf6 23.Rf3 Rf3 24.gf3 e5 25.Kf2 Kf7 26.c4 d4 27.Rb1 Ke7–/+ 28.e4 Rf8 29.Ke2 g5 30.h3 h6 31.Rg1 Rf4 32.Rb1 Rh4 33.Ra1 Rh3 34.Rg1 Kf6 35.Rf1 h5 36.Bd7 Rh2 37.Kd3 Ke7 38.Bb5 Rh3 39.Kd2 h4 40.Rf2 Kf6 41.Bd7 Rh1 42.c3 h3 43.cd4 ed4 44.Kd3 h2 45.Rd2 Ra1 46.Rh2 Ra3 47.Kc2 0–1. Comet B25 – Fritz 5.32, 2004.

8.Bb5 c6 9.Be2 b6 10.Nc3 Bd6 11.Nd4 Ba6 12.d3 e5 13.fe5 Be5 14.0–0 Re8 15.Qe1 Qd6 16.Qh4 h6 17.Rf3 Nbd7 18.Rff1 Bd4 19.ed4 Qe6 20.Bc1 Ra7 21.Bf4 g5 22.Qg3+= Kh8 23.Bc7 Qe3 24.Qe3+/– Re3 25.Bb6! Ra8 26.Bc7 Rae8 27.Be5 Ne5 28.Rf6 Ng6 29.Rc6 Bc8?! 30.a5 Kg7 31.Bf1 Nf4? 32.Rc5 Be6 33.Kf2 Bf5 34.g3 Ne6 35.Rd5 Nd4 36.Rd4 Kf8 37.Nd5 R3e5 1–0. Crafty 19.01 – Fritz 5.32, 2004.

8.ab5 Ra1

9.Ba1 c5 10.c4 dc4 11.Bc4 Nbd7 12.0–0 Re8 13.f5 Nf8 14.Ng5 Qb6 15.Nc3 h6 16.fe6 Be6 17.Ne6 Ne6 18.Qf3 Rf8 19.Nd5 Nd5 20.Qd5 Qc7 21.Rf7! Rf7 22.Qe6 Bf8 23.b6 Qe7 24.Qg6 Qd7 25.Be6 Qe7 26.Be5 Qe8 27.h3 Qe7 28.d4 cd4 29.ed4 (29...Qe8 30.Kh2+– (30.Qf7?! Qf7 31.Bf7 Kf7+–; 30.Bf7?! Qf7 31.Qe4 g5+–)) 1–0. Kostrun,Slaven (2230) – Soldo,Robert (2150), Velika Gorica op 5th, 2005.

9.Ba1 c6 10.c4 cb5 11.cb5 b6 12.Nc3 Nbd7 13.Be2 Nc5 14.Ne5 Bd7 15.0–0 Nfe4 16.Ne4 Ne4 17.Nd7 Qd7 18.Qc2 Rc8 19.Qd3 Nc5 20.Qb1 Ne4 21.g4 Nd2 22.Qb2 Bf6 23.Qd2 Ba1 24.Ra1 e5 25.f5 e4 26.Ra6 Qd6 27.Qd4 Rb8 28.Bc4 g6 29.Qd5 Qe7 30.fg6 hg6 31.Ra8 Ra8 32.Qa8 Kg7 33.Qc6 Qe5 34.Qd5 Qa1 35.Kg2 Qb2 36.Kg3 f5 37.Qf7 Kh6 38.Qf8 Kh7 39.Bg8 Kh8 40.Bf7 Kh7 41.gf5 Qe5 42.Kg2 1–0. jura1946 – julia8maluch, kurnik, 2012.

9.Ba1 c6 10.c4 dc4 11.Bc4 cb5 12.Bb5 Qa5 13.Nc3 Nd5 14.Bd3 Nc3 15.Bc3 Bb4? (15...Qh5 16.Qe2=) 16.Qc2 (16.Bh7!? Kh7 17.Qb1 Qf5 18.Qf5 ef5 19.Bb4+/–) 16...h6 17.0–0 Bc3 18.dc3 Bd7 Nc6 20.f5 ef5 21.Bf5 Nd4 22.cd4 Rc8 23.Qd3 Bf5 24.Rf5 Rc1 25.Rf1 Rf1 26.Kf1 Qa6 (26...b5 27.e4=) 27.Ke2 Kf8 28.Qa6 ba6 29.Kd3 Ke7 30.Kc4 Kd7 31.Kc5 Kc7 32.d5?? (32.e4!? f6+–) 32...a5 33.e4+/– h5? 34.Kb5?? Kd6= 35.Ka5 f5 36.ef5 Kd5 37.Kb4 Ke4 38.Kc3 Kf5 39.Kd3 Kf4 40.Ke2 h4 41.Kf2 g6 42.Ke2 Kg4 43.Kf2 h3 44.g3 g5 45.Kg1 Kf3 46.Kf1 Ke3 47.Ke1 Kf3 48.Kf1 Ke3 49.Kg1?? Ke2–+ 50.Kh1 Kf2 51.g4 Kf3 52.Kg1 Kg4 53.Kf2 Kf4 54.Ke2 Kg4 55.Kf2 Kh4 56.Kf1 Kg4?? 57.Kf2= ½–½. jura1946 – doktormira2, kurnik, 2012.

9.Ba1 c6 10.c4 Ne4 11.g3 (11.Qc2 cb5 12.cb5 Nd7=) 11...dc4–/+ 12.Qc2 Nd6 13.bc6 b5 14.Bg2 (14.Nc3!?–/+) 14...Nc6–+ 15.Ng5 Bg5 16.Bc6 Be7 17.0–0 Qb6 (17...Qc7 18.Bf3–+) 18.Bf3 b4 19.Bd4 Qb5 20.Rc1 (20.Be5 Ba6–+) 20...Ba6 21.Be2 (21.Be5 Rb8–+) 21...Rc8 (21...Bb7 22.Rf1–+) 22.Kf2 (22.Bf3 Bb7 23.e4 Qd7–+) 22...Qf5 (22...Bb7 23.Qd1–+) 23.Qa4 (23.Bf3 Qc2 24.Rc2 Bb7–+) 23...Bb5 (23...Bb7 24.Ke1 Qh3 25.Qd7 Qh2 26.Qe7 Qg1 27.Bf1–+) 24.Qa7 Ne4 25.Kg2 (25.Ke1 Bc5 26.Qa5 Bd4 27.ed4 Qh3–+) 25...Bf8 (25...Bc5 26.Qa5 Bd4 27.ed4–+) 26.d3 Nd6 27.dc4 (27.e4 Qg6 28.Bf3 c3–/+) 27...Bc4 (27...Bc6 28.Kf2 Qh3 29.Ke1 Qh2 30.g4–+) 28.Bc4 (28.Bf3 Bd5 29.Rc8 Nc8–+) 28...Rc4 29.Rc4 Qd5 30.Kf2 Qc4 31.Nd2 Qc2 32.Ke1 Nb5 33.Qb8? (33.Qa6 Qc1 34.Ke2 Nd4 35.ed4 Qh1–+) 33...Nd4 (better is 33...Nc3 34.Bc3 bc3–+ (34...Qc3?! 35.Ke2–+)) 34.ed4 Qd3 35.Qb6? (35.Qe5 b3 36.Qe2–+) 35...Qe3 36.Kd1 Qg1 37.Kc2 Qh2 (37...Qh2 38.f5 Qg3 39.fe6 Qg6 40.Kc1 Qe6–+) 0–1. Kucharkowski,Jens – Guenther, Freital, 1982.

9.Ba1 c6 0.Bd3 cb5 11.Ng5 Nbd7 =.

9.Ba1 Nbd7 10.Nc3 Nc5 (10...Ne4 11.Be2=) 11.Be2 Qd6 12.0–0 Nce4 (12...Bd7 13.Qe1=) 13.Ne4 Ne4 14.d3 Nf6 15.Bd4 (15.c4 c5+=) 15...Nd7 16.c4 c5 17.Bb2 Bf6 18.d4 dc4 19.Bc4 Qc7 (19...b6 20.Ng5+=) 20.Qc2+= cd4 21.Bd4 White gets strong play along the open c–file. 21...Bd4 22.Nd4 (worse is 22.ed4 Qf4 23.Qc3 Qh6+=) 22...Nf6 23.Bd3 Qc2 24.Bc2 Rd8 (24...Ng4 25.Re1 Rd8+=) 25.Rd1 (25.Kf2 h6+=) 25...Ng4= 26.Re1 Ne3 27.Re3 Rd4 28.Rc3 Bd7 29.Rc7 b6 30.Rb7 Kf8 31.Rb6 Rf4 32.Rb7 Ke7 33.Bh7 g6 34.Bg8 e5 35.b6 Kd6 (35...e4 36.Ra7 e3 37.Ra3–/+) 36.Ra7 (36.g3 Rf3=) 36...Be6+= 37.h3 Kc6 38.b7 Kc7 39.Ra5 Kb7 (39...Rb4!?–/+) 40.Re5+= Kc6 41.Bh7 Kd6 42.Rg5 Bf5 43.g4 Bd3 44.Bg8 Ke7 45.Kh2 Bc4 46.h4 Kf6 47.Rc5 (better is 47.Kg3 Rd4 48.Ra5–+) 47...Rg4 48.h5 gh5 49.Bh7 h4 50.Rf5 Kg7 51.Rh5 Rd4 52.Bf5 Be6 (52...Be6 53.Be6 fe6–+) 0–1. van den Braak,Jelle (1905) – Godoy,Mario D, corr ICCF WS/H, 2005.

7.a4 Bd7

8.Nc3 Re8 9.Be2 Bc5 10.0–0 c6 11.Qe1 ab5 12.ab5 Ra1 13.Qa1 cb5 14.Nb5 Ne4 15.Nbd4 Qc7 16.Nb3 f6 17.Nc5 Qc5 18.Qc1 Nc6 19.c4 Nb4 20.Bd4+= Qf8 21.d3 Nd6 22.Qb2 Na6 23.Qb6 dc4 24.dc4 Ra8 25.c5+/– Nc8 26.Qb7 Ra7 27.Ba6 Rb7 28.Bb7 Ne7 29.Ra1+– Nd5 30.Ra8 Be8 31.Bd5 ed5 32.c6! Qe7 33.Bb6 d4 34.c7 Qe3 35.Kh1 Qc1 36.Ng1 Kf7 37.c8Q Qc8 1–0. Fritz 6 – Comet B25, 2004.

8.Be2 ab5 9.ab5 Ra1 10.Ba1 c6 11.bc6 Nc6 12.0–0 Qb6 13.Be5 Ra8 14.Nc3 Ng4 15.Qb1 Bb4 16.Na2? Bc5 17.Qb6=+ Bb6 18.Nc1 Nge5 19.fe5=+ d4 20.Kf2 de3 21.de3 Nb4 22.Bd3 Rc8 23.Nd2? Nc2–+ 24.Bc2 Rc2 25.Rd1 Ba5 26.Ncb3 Bc7 27.Nd4 Ra2 28.Ne2 Bc6 29.Nc4 Bb5 30.Rd4 Rc2 31.Nd2 Kf8 32.Rb4 Bd3 33.Nf4 g5 34.Nd3 Rd2 35.Kf3 Rd3 36.Rb7 Be5 37.Ke4 Rd5 38.h3 f5 39.Kf3 h5 40.Rh7 h4 41.Rh5 Kf7 42.g4 hg3 43.Rg5 Rd2 44.Rg3 0–1. Doctor? 3.0 – Comet B50, 2004.

8.Ne5 c5 9.Be2 =+.

8.Ne5 Re8 9.Na3 Bb4=+ 10.c3 Be7 11.Be2 ab5 12.Nb5 Ne4 13.Nd7 Nd7=+ 14.d3 Nec5 15.Nd4 e5 16.fe5 Bg5 17.Bc1 Re5 18.0–0 Be3–/+ 19.Be3 Re3 20.Qd2 Qe8 21.Rae1 Re5 22.Nb5 Rc8 23.d4= Ne4 24.Qe3 Re7–/+ 25.Bg4 f6 26.Rf4 Qf8 27.Bf5+= g5 28.Be4+/– Kh8 29.Rg4 Rce8 30.Qg3+/– Re4 31.Ree4 de4 32.Nc7 Qa3 33.Qe1 Rc8+= 34.Nd5 e3 35.Re4 Qb3 36.Ne3+– Rc3 37.Re8 Kg7 38.Nd5!! Qd5 39.Qc3 Qf7 40.Qe3 Ne5 41.Re5 fe5 42.Qg5 Kf8 43.Qe5 Kg8 44.d5 Qf8 45.Qe6 Qf7 46.Qc8 Qf8 47.Qf8 Kf8 48.Kf2 b6 49.Ke3 Ke7 50.Ke4 Kd6 51.g4 Kd7 52.Ke5 Ke7 53.d6 Kd7 54.g5 Kc8 (54...Kd8 55.Ke6 Kc8 56.Ke7+–) 1–0. Crafty 19.01 – Comet B25, 2004.

8.Ne5 Re8 9.Nc3 c5 =.

7.a4 Ne4

8.Na3 ab5 9.ab5 Bh4 10.g3 Bf6 11.Qc1 Nd7 12.Bg2 Qe7 13.d4 c5 14.0–0 Nb6 15.Ne5 Na4 16.c4= Nb2 17.Qb2 Re8 18.Nc2 Ra1 19.Ra1 b6 20.Be4 de4 21.Qa3 Bb7+= 22.Qa7 Qc7= 23.dc5 bc5 24.Ra6 Qe7 25.Rb6= Qd8 26.Ne1 Be5 27.fe5 Qd2 28.Kf1 Bc8 29.Rd6 Qb4 30.Qe7! Qc4?? 31.Kf2+/– Qb5 32.Rd8 (32...Bd7 33.Qd7 Qd7 34.Rd7+/–) 1–0. Michalek,Martin – Schulz,Hans_Juergen, TT–08 ETC, 2003.

8.Nc3 ab5 9.ab5 Ra1 10.Qa1 f6 =.

8.Nc3 ab5 9.ab5 Ra1 10.Qa1 Bh4 11.g3 =.

8.Nc3 Bf6 9.d4 c5 10.Ne4= de4 11.Nd2 cd4=+ 12.Ne4 Qa5 13.c3 dc3 14.Nf6 gf6 15.Ba3 Rd8 16.Qg4=+ Kh8 17.Be7 c2 18.Kf2 Rd2 19.Be2 Nd7 20.Qh5 Kg8 21.Rhc1 b6 22.Ra2=+ Qc3 23.Ra3 (23...Qb2 24.Qg4 Kh8 25.Raa1–/+; 23.Qf3 Ra7 24.a5 ab5 25.Qe4–+). Nemec,Zdenek – Baer,Werner, TT–12 ETC, 2004.

8.Bd3 Bh4 9.g3 Bf6 10.Nc3 Nc3 11.Bc3 Bc3 12.dc3 Qf6 13.Nd4 ab5 14.ab5 Ra1 15.Qa1 e5 16.fe5 Qe5 17.Kd2 Re8 18.Qe1 c5 19.bc6 bc6 20.Rf1 c5 21.Qf2 f6 22.Nf3 Qe6 23.Re1 Qd6 24.g4 c4 25.Bf5 Bf5 26.gf5 Na6 27.Ra1 Nc5 28.Qe1 Ne4 29.Kc1 Qc7 30.Ra2 Rb8 31.Ra4 Qd7 32.Rb4 Ra8 33.Kb2 Qa7 34.Kc1 Qa3 35.Rb2 Rb8 36.Kd1 0–1. Comet B50 – Fritz 6, 2004.

8.Be2 Bh4 9.g3 Bf6 10.Ne5 Be7 11.0–0 f6 12.Ng4 Nd6 13.d4 ab5 14.ab5 Ra1 15.Ba1 Bd7 16.Nc3 c6 17.bc6 Nc6 18.Bf3 Nf5 19.Qd2 Qa5 20.Rb1 b5 21.Kg2 b4 22.Ne2 Qa2 23.Qc1 h5–+ 24.Nf2 Ne3! 25.Kg1 Qc2 26.Qc2 Nc2 27.Bh5 Na1 28.Ra1 b3 29.Rb1 Rb8 30.Nd3 Kh7 31.Bf3 Bc8 32.Rc1 Ba6 33.Rc6 Bd3 34.Re6 b2 35.Nc3 Bb4 36.Bd5 Bc3 37.Ba2 Ra8 38.Bb1 0–1. Doctor? 3.0 – Fritz 6, 2004.

6.Nf3 c6

7.a4 a5 8.Be2 Ne4 9.0–0 Bf6 10.d4 Nd7 11.c4 c5 12.Nbd2 b6 (12...cd4 13.Bd4 Nc3 14.Bc3 Bc3 15.Rc1=) 13.Ne4+= de4 14.Nd2 Bb7 15.Qc2 g6 (better is 15...cd4!? 16.ed4 Nb8+=) 16.Ne4+– Bg7 17.Nd6 Qb8? (better is 17...Rb8+–) 18.Rad1?? (better is 18.Nb7!? Qb7 19.Bf3 Qc7 20.Ba8 Ra8+–) 18...Ra7? (better is 18...Qd6 19.dc5 Qc5 20.Bg7 Kg7 21.Rd7 Qe3 22.Kh1 Rab8+=) 19.Nb7+– Rb7 20.Bf3 Rc7 21.d5 ed5 22.Bg7 Kg7 23.cd5 Nf6 (better is 23...f5+–) 24.e4 Rd7 25.e5 Ng8 26.Qc3 f6 27.g4 (27.d6 Rdd8+–) 27...fe5 (27...h6+–) 28.fe5 Rdd8 (28...Kh8 29.e6 Rg7+–) 29.e6 Kh6 (29...Nf6 30.e7 h6 31.ef8R Rf8 32.d6+–) 30.d6! Rd6 (30...Qd6 31.Rd6) 31.Qe3 g5 32.Be4 Rf1 (32...Nf6 33.Rf6! Rf6 34.Qh3 Kg7 35.Qh7 Kf8+–) 33.Rf1 Re6 (33...Rd3 34.Bd3 Qf4 35.Rf4 Kg7 36.Rf7 Kh6 37.Rh7) 34.Qh3 (34.Qh3 Kg7 35.Qh7#) 1–0. Woelfelschneider,Peter – Hoferichter, 2009.

7.a4 a6 8.c4 ab5 9.cb5 Ne4 10.Nc3 Bf6 11.d4 c5 (11...Qa5 12.Qc2 Be7 13.Bd3=) 12.Ne4= de4 13.Ne5 cd4 (13...Nd7 14.Be2=) 14.Bd4 Qa5 (14...Bh4 15.g3 Be7 16.Bg2=) 15.Kf2 Rd8 (15...Be5 16.Be5 Nd7 17.Qh5=) 16.Qc2+= Be5 17.fe5 Qb4 18.Be2 Nd7 19.Rhd1 (19.Rhb1 Qa5+=) 19...Qe7 (19...Ra5 20.Bc5!! (20.Qe4?! Ra4 21.Qh4 Rf8+/–) 20...Qc5 21.Qc5+–) 20.Qc7 (20.Qe4 Ra5+/–) 20...Re8 (20...Kh8 21.a5+=) 21.a5+/– f6 (21...Qg5 22.Kg1+/–) 22.Rdc1 (better is 22.ef6!? gf6 23.Qg3 Kh8 24.Qh4+–) 22...fe5+/– 23.Be5 Ne5 24.Qe5 Rf8 25.Kg1 Qb4? (better is 25...Qh4!? 26.g3 Qd8+/–) 26.Rc7+– Rf7 27.Rf7 (better is 27.Rd1 Rc7 28.Rd8 Kf7 29.Qc7 Kg6 30.Kf2+– (30.Rc8 Qe1 31.Bf1 Qe3 32.Kh1 Qf2–/+)) 27...Kf7 28.Rf1 Kg8 29.Qc7 g6 30.Qf7 Kh8 31.g4 (31.Rd1 Bd7 32.Rd7 Qe1 33.Bf1 Qe3 34.Kh1 Qh6 35.Qf6 Kg8 36.Qe6 Kh8 37.Qf6 Kg8 38.Bc4) 31...Ra5 (31...Bd7 32.Qd7 Qc3 33.Qb7 Re8+–) 32.g5 (32.Qe8 Kg7 33.Rf7 Kh6 34.g5 Kg5 35.Qd8 Qe7 36.Qe7 Kh6 37.Rh7) 32...Bd7 (32...Qe7 33.Qe7 Rb5 34.Rf8) 33.Qf6 Kg8 34.Qd8 (34...Kg7 35.Qd7 Kg8 36.Qe8 Kg7 37.Rf7) 1–0. Tilp,Andreas – Basedow,K, corr DDR, 1988.

7.a4 a6 8.Be2 Ne4 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5 =.

7.a4 a6 8.Be2 Ne4 9.Na3 Bf6 (9...Qa5 10.c4=+) 10.Bf6= Qf6 11.0–0 Qe7 12.Qb1? (better is 12.bc6 Nc6 13.c4=) 12...ab5–+ 13.c3 (13.Qb2 ba4 14.c4 Rd8–+) 13...ba4 14.Bd3 (14.c4 c5–+) 14...f5 15.c4 Nc5 (15...Nd7 16.Bc2–+) 16.Bc2–/+ dc4 17.Nc4 b5 18.Nce5 Ncd7 (18...Nca6 19.d4–+) 19.Rc1 (19.d4 Ne5 20.fe5 Bd7–+) 19...Ne5 (19...Ba6 20.e4–+) 20.Ne5–/+ Qd6 21.d4 Nd7 22.Bd1 Ne5 23.fe5 Qd7 24.Bf3 Bb7 25.Rc5 (25.Qb4 f4 26.e4 a3–+) 25...Ra6 26.g3 Rfa8 27.Ra3 Qd8 28.Kf2 Qb6 29.Qb4 Qa5 30.Qb2 Qd8 31.Qd2 Qe7 32.Qc3 Kh8 33.Qb2 g5 34.h3 f4 35.g4 fe3 36.Ke3 Qf7 37.Kf2 Qf4 38.Kg2 Rf8 39.Rc1 Raa8 40.Rd1 Rad8 41.Rad3 Ba8 42.Qe2 Qf7 43.Ra1 Qe7 44.Qc2 Rf4 45.Kg3 Rdf8 46.Qd2 Qf7 47.Qg2 Qg6 48.Rad1 b4 49.R1d2 b3 50.Re3 Qh6 51.Qg1? Qh4 52.Kg2 Bb7 53.Rc3 Ba6 54.Bc6 Bf1 55.Kh1 Bh3 56.Rh2 Rf1 57.Rhh3 Rg1 58.Kg1 Qe1 59.Kh2–+ Rf2 60.Bg2 Rf7 61.Rc8 Kg7 62.Rb8 a3 63.Rbb3 a2 64.Rbe3 Qe3!? (65.Re3 a1Q–+) 0–1. Husarik,B (1820) – Bernasek,Jan (2250), CZE–ch U18, 2001.

7.a4 cb5 8.ab5 Bd7 9.c4 dc4 10.Bc4 h6 11.0–0 a6 (11...Ne4 12.Qe2=) 12.Bd4 a5 (12...Nd5 13.Qe2+=) 13.Ne5 Bd6 (13...Ne8 14.Qg4+– (worse 14.Nd7 Nd7 15.Qf3 Nd6=)) 14.Nc3 Be5 (better 14...Bc8!?+–) 15.fe5+– Nh7 (15...Nd5 16.Qf3 Nc3 17.Bc3+–) 16.Na4 Ng5? (16...Be8 17.Nb6 Ra7+–) 17.Nb6 Be8 (17...Ra7 18.Nd7 Nd7 19.Ba7+–) 18.Na8 (18.Na8 Nd7 19.Qa4 Qa8 20.Qa5 Qa5 21.Ra5+–) 1–0. michaelbuss (2815) – hansson (1875), ChessWorld.net, 2010.

7.a4 Bd7 8.Be2 =.

7.a4 Nbd7 8.Be2= Bd6 9.c4 (9.0–0 c5=) 9...Re8 10.Ne5 Qc7 11.Nd7 Bd7 12.0–0 dc4 (12...e5 13.c5 Bc5 14.Be5 Re5 15.fe5 Qe5 16.Na3=) 13.Bf6 gf6 14.Nc3 (14.Bc4 cb5 15.Bb5 Bb5 16.Qg4 Kh8 17.ab5 f5+=) 14...cb5 15.ab5 Rad8 (better is 15...Bb4+=) 16.Ra7+/– e5? (better is 16...Bb4 17.Ra4 Bc3 18.Rc4 Qa5 19.Rc3 Bb5 20.Bb5 Qb5+/–) 17.Nd5+– Qc5 18.Nf6 Kg7 19.Rb7 Be6 (19...Kf6 20.fe5 Ke7 21.ed6 Kd6 22.Qa4+–) 20.Ne8 Re8 21.f5 Bd5 22.Rd7 Bf8 (22...Kf8 23.d3 c3+–) 23.Bh5 Re7 (23...Qb5 24.Qg4 Kh8 25.Bf7 Bf7 26.Rf7 Bh6 27.Rh7 Kh7 28.Qg6 Kh8+–) 24.f6 (24.f6 Kh8 25.fe7 Be7 26.Bf7+–) 1–0. Woelfelschneider,Peter – Nieke 2, 2009.

7.a4 Ne4 8.Bd3 =.

7.Nc3 Ne4

8.Bd3 Nc5 9.Be2 =.

8.Ne4 de4 9.Nd4 c5 10.Nb3 =+.

8.Ne4 de4 9.Nd4 Bd7 10.Qh5 Bf6 =.

6.Nf3 Bd7

7.Nc3 a6 8.a4 (8.ba6 Na6 9.Be2 c6 10.0–0 b5 11.Ne5 Nc5+=) 8...Ne4 9.Ne4 de4 10.Ne5 ab5 11.ab5 Ra1 =.

7.Be2 a6 8.a4 ab5 (8...Qe8 9.Nc3 Ne4 10.Ne4 de4 11.Ng5 ab5=; 8...c6 9.Nc3 Ne4 10.0–0 f6 11.Ne4 de4=) 9.ab5 Ra1 10.Ba1 c5 11.Nc3 c4 =.

7.Be2 c6 8.a4 a6 (8...Ne4 9.0–0 a6 10.Nc3 f6 11.Ne4 de4=) 9.Nc3 Ne4 10.0–0 f6 11.Ne4 de4 =.

7.Be2 Ne4 8.0–0 Bf6 (8...c6 9.a4 a6 10.Nc3 f6 11.Ne4 de4=; 8...a6 9.a4 Qe8 10.d3 Nf6 11.c4 dc4=) 9.Ne5 a6 10.a4 c5 11.Nc3 Nc3 =.

7.Be2 Qe8 8.Nc3 (8.a4 a6 9.Nc3 Ne4 10.Ne4 de4 11.Ng5 ab5=) 8...Ne4 (8...a6 9.a4 Ne4 10.Ne4 de4 11.Ng5 ab5=) 9.a4 Qd8 (9...a6 10.0–0 Bf6 11.Ba3 Nc3=) 10.0–0 c6 (10...f6 11.Ne4 de4=) 11.Qe1 a6 =. wiking – renfer, queenalice.com, 2009.

6.Nf3 Nbd7

7.c4 c6 8.a4 Qc7 9.Be2 Re8 (9...dc4 10.Na3 c3 11.Bc3=) 10.Ne5 (10.0–0 dc4 11.Qc2 cb5 12.ab5 Nd5=) 10...Bd6 11.d4 Ne4 (11...Bb4 12.Bc3 Be7=) 12.c5= Be7 13.0–0 Nf8 (13...Qa5!?=) 14.Nd2+/– f6 (14...Nd2 15.Qd2 f6 16.Nd3+=) 15.Nd3 (15.Ne4 de4 16.Nc4 Ng6+/–) 15...Nd2 16.Qd2 Bd7 17.bc6 bc6 18.Bc3 Bd8 (18...Reb8 19.Nb4 Bc8 20.Rab1+/–) 19.a5 a6 (19...Rb8 20.Nb4 Bc8 21.Rab1+/–) 20.Rab1 Be7 (better is 20...Ng6!?+/–) 21.Rb6+– Reb8 22.Rfb1 Bd8?? (22...Be8 23.Nb4 Rb6 24.ab6+–) 23.Rb8 (better is 23.Qb2! Rb6 24.cb6+– (24.Qb6?! Qc8 25.Qb3 Ng6+/–)) 23...Rb8 24.Rb6 Qa7 25.Qb2 Bb6 26.cb6 (26.ab6?! Qa8+/–) 26...Qb7?? (better is 26...Qa8+–) 27.Nc5 Qc8 (27...Qa8 28.Na6 Rb7 29.Nc5+–) 28.Ba6 (better is 28.b7 Rb7 29.Nb7 Qa8+–) 28...Qd8 29.b7 Kf7 (29...e5 30.de5 Bg4 31.Kf2+–) 30.Be2 (30.Bd3 Bc8+–) 30...Bc8 31.a6 Nd7 (31...Qc7+–) 32.a7 Bb7 33.Nb7 (33.Nb7 Qf8 34.ab8R Qb8 35.Bd1+–) 1–0. Rheindt,Stefan (2015) – Schulz,Peter (1845), RSS7E schnell–13, 2007. (=1.f4 Nf6 2.b4 e6 3.b5 Be7 4.Bb2 d5 5.e3 0–0 6.Nf3)

7.Bd3 a6 8.0–0 =+.

7.Bd3 c5 8.Nc3 (8.bc6 bc6 9.Nc3 Nc5=) 8...Nb6 (8...d4 9.Ne2 Nb6 10.c4 (10.ed4? c4–+) 10...dc3 11.dc3–/+) 9.Ne5 (9.0–0 Qd6=) 9...d4 (9...c4 10.Be2=+) 10.Ne4 (10.ed4 Qd4 11.Qf3 Rd8=) 10...de3 (10...Na4 11.Nf6 Bf6 12.Bc1=+) 11.de3= Nbd5 (11...Ne4 12.Be4 Qd1 13.Rd1=) 12.Qf3 (12.Nf6 Bf6 13.Qd2 Nb4=) 12...Qa5 13.Kf2 Ne4 14.Qe4 Qd2 15.Kf3?? (better is 15.Kg3 f5 16.Qf3=) 15...f5–+ 16.Rad1 (16.Qd5 ed5 17.a4–+) 16...fe4 17.Be4 Qe3 18.Kg4 Nf6 19.Kg5 Ne4 20.Kg4 Nf2 21.Kh5 Rf5 0–1. Schmidt,Valeska – Bommert,Christian, Dortmund ABC Anfaenger, 2002.

7.Be2 a6 =+.

6.Nf3 Ne4

7.Bd3 Nc5 8.h4 (8.Be2!?=) 8...Nd3–/+ 9.cd3 Nd7 (9...c6 10.Nc3–/+) 10.Nc3 (10.Qc2 a6 11.Ba3 Ba3 12.Na3 Qe7–/+) 10...a6 11.a4 ab5 (11...Nc5 12.Qc2+=) 12.ab5 Ra1 13.Ba1 Nc5 14.Qb1 f5 (14...Re8 15.h5+=) 15.h5= Bd6 (15...Bf6 16.d4 Nd7 17.d3+=) 16.h6 gh6 (16...g6 17.0–0+=) 17.Rh6 Rf7 18.Ke2 (18.Ne2 c6+=) 18...Bf8= 19.Rh3 (19.Rh2 Rg7=) 19...Be7 (19...Rg7 20.Qh1 Nb3 21.Bb2=) 20.Rg3+= Kf8 21.Qh1 Bf6 22.Qh6 Ke7 23.Nd5 (23.Bb2 Nb3 24.Ne5 Be5 25.fe5+–) 23...ed5+= (23...Qd5 24.Bf6 Rf6 25.Qh7 Kd6 26.Ne5+–) 24.Bf6 Rf6 25.Qh7 Kd6 26.Rg8 Qd7?? (better is 26...Rf8 27.Ng5 Be6=) 27.Qh8+– Re6 (27...Qe7 28.Re8 (worse is 28.Rc8 Nd7+–) 28...Be6 29.Re7 Ke7 30.Qb8+–) 28.Rc8 Nd3 29.Rd8 Nf4 30.Kf1 Ng6 31.Rd7 (31.Qg8 Ne5 32.Qf8 Re7+–) 31...Kd7 32.Qg7 Ne7 33.Ne5 Kd6 34.d4 c6 (34...c5 35.Nd3 b6 36.dc5 Kd7 37.c6 Kc7 38.e4 de4 39.Nf4+–) 35.Qf8 Kc7 36.Qe8 Kb6 37.Qd7 (37.Qd7 Re5 38.de5+–) 1–0. Curth,Heinz – Rosner,Dirk, corr ICCF, 1997.

7.d3 Bh4

8.g3 Bf6

9.Bf6 Qf6

10.Ne5 Nd6

11.Nc3 Nd7

12.d4 a6 13.ba6 ba6 14.Bd3 =.

12.d4 Re8 13.Bd3 Nf5 =.

12.d4 Qh6 13.Bd3 f6 14.Nd7 Bd7 =.

5.f4 a6

6.a4 0–0 7.Nf3 (--> 5.f4 0–0 6.Nf3 a6 7.a4).

6.a4 ab5 7.ab5 Ra1 8.Ba1 0–0 9.Nf3 c5 10.bc6 bc6 11.Bd3 Ba6 12.0–0 Qb6 13.Ne5 Nbd7 14.Rf3 Bd3 15.cd3 Ra8 16.Nc3 Nc5 17.Rg3 Qa6 18.Bb2 Nd3–+ 19.Na4?? Ne5 20.fe5 Ne4 21.Nc3 Ng3 22.hg3 Qb6 (23.Qc2 Qc7–+) 0–1. Pietrzak,Wojciech – Amann,Klaus, internet, 2001.

6.a4 Nbd7 7.Nf3 Nc5 8.Be2 0–0 9.ba6 b6=+ 10.a5 ba5 11.0–0 Ba6 12.Ra5 Be2 13.Ra8 Bd1 14.Rd8 Rd8 15.Rd1 Rb8 16.Be5 Ncd7 17.Nd4 Rb7 18.Nc6 Bf8 19.Nc3 Rb6 20.Bf6 Nf6 21.Nd4 c5 22.Nb3 Ra6 23.Rb1 Bd6 24.Kf2 g5 25.fg5 Ng4 26.Ke2 Nh2 27.Rh1 c4 28.Nd4 Be5 29.Ncb5 Ra2 30.Kf2 Ng4 31.Ke2 Bd4 32.Nd4 Ne5 33.Rh3 Nd7 34.Rh5 Nc5 35.Kf3 Ne4 36.d3 cd3 37.cd3 Rf2 38.Kg4 Rg2 39.Kf4 Nc5 40.Kf3 Rb2 41.Nc6 Nd3 42.e4 Nb4 43.ed5 Nd5 44.Rh1 Rb3 45.Kg4 Rc3 46.Ne5 f5 47.gf6 Nf6 48.Kg5 Kg7 49.Ra1 h6 50.Kh4 Rc5 51.Ra7 Kf8 52.Ra8 Ke7 53.Ra7 Kd6 54.Nf7 Kc6 55.Ra6 Kd7 56.Ra7 Kc8 57.Re7 Rc4 58.Kg3 Nh5 59.Kf2 Rf4 60.Ke3 Rf6 61.Ke4 Kb8 62.Ke5 Rf5 63.Kd4 Nf6 64.Nh6 Rd5 65.Kc4 e5 66.Nf5 Ra5 67.Kb4 Rd5 68.Kc4= e4 69.Ng3 Ra5 70.Re6 Nd7 71.Kd4 Ra4 72.Kd5 Kc7 73.Ne4 Re4 74.Ke4 Nc5 75.Kf4 Ne6 ½–½. Comet B25 – Comet B50, 2004.

6.Nc3 d4 7.ed4 ab5 8.Bb5 c6 9.Bd3 Qd4 10.Qf3 Bc5 11.0–0–0 Qd8 12.Ne4 Bg1 13.Nf6 gf6 14.Rhg1 Nd7 15.Qg4 Qe7 16.Bc4 Qc5 17.Bb3+= h5 18.Qg7 Rf8 19.Bf6 Nf6 20.Qf6 Bd7 21.f5 Qf5 22.Qf5+/– ef5 23.Rde1 Be6 24.Be6 fe6 25.Re6 Kd7 26.Rh6 Ra2= 27.Rh7 Kd6 28.Rb7 Re8 29.h4 Re2 30.Rb1 Re4 31.g3 Rg4 32.Rg2 f4 33.Rb3 fg3 34.Rbg3 Rh4 35.Rd3 Ke6 36.Kb1 Ra6 37.Kb2 Rb6 38.Kc3 Rg4 39.Re2 Kf5 40.Rf3 Rf4 41.Rf4 Kf4 42.Rh2 Rb5 43.Rh1 Kg4 44.Rg1 Kf5 45.Rh1 Kg5 46.Rg1 Kf5 47.Rh1 Kg5 48.Rg1 Kf4 49.Rh1 Kg4 50.Rg1 Kf3 51.Rh1 Kg2–/+ 52.Rh4 Kg3 53.Rh1 h4 54.Rg1 Kf2 55.Rh1 Rh5–+ 56.Rh3 Kg2 57.Re3 h3 58.Re2 Kg3 59.Re3 Kf2 60.Kd3 h2 61.Re2 Kf1 62.Rh2 Rh2 63.Kc3 Ke2 64.d3 Kd1 65.d4 0–1. EXchess 3.11 – Crafty 19.01, 2004.

6.Nf3 Bd7 7.Nc3 0–0 8.Be2 ab5 9.Nb5 Ne4 10.0–0 f6 11.Nbd4 c5 12.d3 Nd6 13.Nb3 c4 14.Nbd4 Nc6 15.dc4 Nc4 16.Bc4 dc4 17.Qd2 Bc5 18.Rfd1 Qa5 19.Bc3 Qa7 20.Kh1 Rfd8 21.Nc6= bc6 22.Bd4 Qa3 23.Bc5 Qc5 24.Qc3 Ra3= 25.Qd4 Qa5 26.e4 Ra2? 27.Ra2 Qa2 28.Qb6 Qa8 29.Qc7 c5 30.e5 Qb8 31.Qb8 Rb8 32.Rd7 fe5 33.g3 e4 34.Ng5 e3 35.Kg2 e5 36.f5 Rf8 37.g4 h5 38.Ne6 e2 39.Kf2 Rf6 40.Ke2 Kh8 41.Rd8 Kh7 1–0. Fritz 5.32 – Comet B50, 2004.

6.Nf3 ab5

7.Bb5 Bd7 8.Nc3 Bb5 9.Nb5 c6 10.Nbd4 0–0 11.0–0 Nbd7 12.Qb1 Nb6 13.a3 Nc4–/+ 14.Bc3 Qc7 15.a4 Ne4 16.Ne2 Ba3 17.Qb3 Nc5 18.Qb1 Na4 19.Bd4 c5 20.Be5 Qb6 21.d3 Ne5 22.Ne5 Qb1 23.Rab1 Bb4 24.c3 Nc3 25.Nc3 Bc3 26.Nd7 Rfd8 27.Nc5 Bd2 28.Rf3 Rdc8 29.d4 Ra3 30.Kf2 Ra7 31.Rb2 Ba5 32.Rb7 Rb7 33.Nb7 Rc2 34.Kg3 Be1 35.Kh3 g6 36.Nd6 Bb4 37.Nb5 Re2 38.f5 gf5–+ 39.Rg3 Kf8 40.Rf3 Bd2 41.Kg3 Be3 42.Kh3 Bf2 43.Rf4 Ke7 44.Na7 Kf6 45.Nb5 e5 46.Rf3 Bd4 47.Nd4 ed4 48.g3 Ke5 49.Rb3 f6 50.Rf3 Re3 51.Kg2 Rf3 52.Kf3 h6 53.h3 h5 54.h4 f4 55.gf4 0–1. Comet B50 – Crafty 19.01, 2004.

7.Bb5 Bd7 8.Be2 0–0 9.Qc1 b5 10.0–0 c5 11.Ne5 Na6 12.d4 c4 13.Nd2 Qa5 14.c3 b4 15.e4 Nc7 16.Re1 bc3 17.Bc3= Qa3 18.Nd7 Nd7 19.Qa3 Ba3 20.Rab1 Ra7 21.f5 ef5=+ 22.ef5 Bd6 23.Rb2 Rfa8 24.Ra1 Ra3 25.Nb1 R3a6 26.Bd1 Nb6 27.Bg4 Na4 28.Rb7 Nc3 29.Nc3 Ra3 30.Rc1 Bf4 31.Rc7 Bc1 32.Nd5=+ R3a5 33.Bf3 Bg5 34.Ne7+/– Be7 35.Ba8 Ra2 36.Bd5+– Bd6 37.Rd7 Ra6 38.Bc4 Rc6 39.Bd5 Rb6 40.Bf7 Kf8 41.Be6 Be7 42.Rc7 Rd6 43.d5 Bf6 44.Kf2 Be5 45.Rf7 Ke8 46.Kf3 Bf6 47.Rb7 Ra6 48.g3 Ra2 49.d6 Rd2 50.d7 Ke7 51.h4 Be5 52.Rb5 Bd6 53.Rb7?? Be5 54.h5 Rc2 55.g4 Rb2 56.Ra7 Rd2 57.g5 Rd4 58.Ra8 Rd7 59.Bd7 Kd7 60.Ra7 Ke8 61.Ke4 Bb2 62.Rb7 Bc3 63.h6 gh6 64.gh6 Kf8 65.Rh7 Kg8 1–0. Crafty 19.01 – Doctor? 3.0, 2004.

7.Bb5 Bd7 8.Be2 0–0 9.Ne5 c5 10.0–0 Qb6 11.Qc1 Nc6 12.Bf3 c4 13.Nc3 Ra5 14.Rb1 Qc7 15.Ba1 Rfa8 16.Nb5 Qc8 17.Nc3 Nb4 18.Nd7 Nd7 19.Qb2 Nf6 20.a4 Bc5 21.Kh1 R8a6 22.Rfd1 Rb6 23.Qc1 Ne4 24.Ne4 de4 25.Qb2 f6 26.Be4 Ra4 27.d4 cd3 28.cd3 Be3 29.Qe2 Bf4 30.Bh7 Kh7 31.Qe4 Kg8 32.Qf4 Qc2 33.Rbc1= Ra1 34.Ra1 Nd3 35.Qb8 Kh7 36.Rf1 e5 37.Qe8 Ra6 38.Qh5 Kg8 39.Qf3 e4 40.Qh5 Qc6 41.Ra6 ba6–+ 42.Rb1 Qa8 43.Qa5 Qc8 44.Ra1 Qc5 45.Qc5 Nc5 46.Ra5 Nd3 47.Kg1 e3 48.Kf1+= Nf4 49.g3+/– Ng6 50.Ke2+– Ne5 51.h3 Kf7 52.Ra6 Nc4 53.Kd3 e2 54.Ke2 Ne5 55.Ke3 Kg6 56.Ke4 Kg5 57.Rd6 Nc4 58.Re6 Nd2 59.Kd5 Kf5 60.Re2 Nb3 61.Rf2 Kg5 62.Rb2 Na5 63.Rb5 Nc6 64.Kc6 f5 65.Kd5 g6 1–0. Fritz 5.32 – Doctor? 3.0, 2004.

7.Bb5 Bd7 8.Be2 Nc6 9.0–0 h6 10.Ne5 Ne5 11.fe5 Ne4 12.d3 Ng5 13.Nd2 0–0 14.c4 dc4 15.Nc4 b5 16.Nd2 Bc6 17.Nb3 Qd5 18.e4 Qd7 19.Qc2 Ba3 20.Rac1+= Bb2 21.Qb2 b4 22.Rc4 Rfb8 23.Rfc1 Ba4 24.Rc7 Qd8 25.Nd4 Bb5 26.h4 Nh7 27.Nb5 Rb5 28.d4 Rba5 29.Qb4 Ra2 30.Bd1 Ra1 31.g3 R1a3 32.R7c3 Rc3 33.Qc3 Qd7 34.d5 Qa7 35.Kg2 Qa2 36.Rc2 Qa1? 37.Qa1 Ra1 38.Rc8 Nf8 39.Bg4 ed5 40.ed5 Ra2 41.Kh3 g6 42.e6 fe6 43.de6 Ra7 44.Re8 Kg7 45.e7 Nh7 46.Rg8! Kg8 47.e8Q Kg7 1–0. Fritz 6 – Crafty 19.01, 2004.

5.f4 Nbd7

6.Nf3 0–0

7.Nc3 =+.

7.Be2 a6 8.ba6 b6 9.a7 Ra7 10.0–0 Ba6 11.d3 Bb7 12.Nc3 Ra5 13.Ne5 Nc5 14.d4 Nce4 15.Bd3 Qa8 16.Ne4 Ne4 17.Be4 de4 18.Qe2 f6–/+ 19.Bc3 Ra4–+ 20.Qg4 Bd5 21.Qh4 Qe8 22.Ng4 f5 23.Nh6 gh6 24.Qh6 Qc6 25.Bb2 Qc2 26.Rf2 Qd3 27.Rc1 Rc4 28.Re1 Ra8 29.g4 Rc2 30.gf5 Kh8 31.f6 Rg8 32.Qg5 Bf6 33.Qg3 (33.Qg8 Kg8 34.Rc2 Qc2–+) 0–1. Doctor? 3.0 – Fritz 6, 2004.

7.Ne5 Ne5 8.Be5 Nd7 9.Bc3 a6 10.Qg4 Nf6 11.Qg3 Ne8 12.h4 ab5 13.Bb5 Bd7 14.Bd3 Nf6 15.Bd4 c5 16.Be5 Ba4 17.c4 dc4 18.Bc4 Bc2 19.Nc3 Bd3–/+ 20.Bb3 b5–+ 21.h5 h6 22.Rc1 c4 23.Bd1 Ra5 24.f5 b4 25.Bc7 bc3 26.dc3 Qd5 27.Ba5 Qa5 28.Bf3 Qa3 29.Rd1 Qc3 30.Kf2 Ne4 31.Be4 Qc2 32.Kg1 Qd1 33.Kh2 0–1. Fritz 5.32 – Fritz 6, 2004.

6.Nf3 b6

7.Be2 a6 8.0–0 =.

7.Be2 Bb7 8.0–0 0–0 9.c4 dc4=+ 10.Bc4 Ne4 11.Qc2 Ndf6 12.Nc3 Nc3 13.Qc3 c6 14.a4 Qc7 15.Nd4 cb5 16.ab5 Rfc8 17.Rfc1 Qd7 18.Qb3 Bd5 19.Bd5 Rc1 20.Rc1 Qd5 21.Qd5+= Nd5 22.Nc6 Bb4 23.Rc2 Bd6 24.Be5 Be5 25.fe5 Kf8 26.Ra2 Nc7 27.Ra7+/– Ra7 28.Na7 Ke8 29.Nc8 Nb5 30.Nb6 Kd8 31.Nc4 Kc7 32.Na5 Na3 33.Kf2 Kb6 34.Nb3 Kc6 35.e4 Kd7 36.Ke2 Nb5 37.Kd3 Na7 38.Kc4 Nc6 39.d4 Ke7 40.Kc5 Kd7 41.Nd2 Ne7 42.Nc4 Ng6 43.g3 f6 44.ef6 gf6 45.Ne3 Ne7 46.Ng4 Ng8 47.h4 h5 48.Ne3 Nh6 49.d5 e5 50.d6 Nf7 51.Nc4 Nd8 52.Kd5 Nb7 53.Nb6 Kd8 54.Na4 Ke8 55.Ke6 Nd8 56.Kf6 Kd7 57.Ke5 Nf7 58.Kf6 Nd6 59.Nc3 (59...Nc4 60.Kg6+–) 1–0. Sundin,Tommy – Englund,Helge, Iggesund Sweden, 1989.

7.Be2 Bb7 8.0–0 c5 9.c4 0–0 10.a4 Qc7 11.Na3 (11.g3 h6=) 11...Rfd8 (11...d4 12.Qb3+=) 12.Qc2 (12.Ne5 Ne4=) 12...Nf8 (12...Bd6 13.g3+=) 13.Be5 (13.cd5 ed5 14.Ne5 c4=) 13...Qd7= 14.h3 (14.a5!?=) 14...Ng6 (better is 14...Ne4 15.Bd3 Ng3–/+) 15.g4? (15.cd5!? ed5 16.Bb2+=) 15...Ne4 (15...d4 16.ed4 Bd6 17.d3 Nf4 18.Qd2 Be5 19.de5 Ne2 20.Qe2 Bf3 21.Qf3 Qd4 22.Kh1 Qe5 23.Nc2–+) 16.Kh2 (16.Bd3–/+) 16...Bf6 (better is 16...d4!? 17.ed4 cd4–+) 17.Bf6 (17.d3!? Nd6 18.Bf6 gf6 19.a5=) 17...Nf6–/+ 18.g5 (18.cd5 ed5 19.Bd3 Qe7+=) 18...Ne4 19.d3 (19.Bd3 Qc7 20.cd5 ed5–/+) 19...Nd6 20.Qc3 (20.cd5 ed5 (20...Bd5?! 21.e4 Bb7 22.Ne5+=) 21.Ne5 Qe7–/+) 20...Nf5 (better is 20...d4 21.ed4 Nf4–+) 21.Nc2? (better is 21.d4–+) 21...Ne3 22.Ne3 d4 23.Qc1? (23.Qd2 de3 24.Qe3 Qd6+=) 23...de3 (better is 23...Nf4!? 24.Ne5 Qd6–+ (24...Ne2 25.Qe1 Qe7 26.N3g4+–)) 24.Qe3+= Qd6 25.Ne5 Rab8 26.Ra3 Ne5 27.Qe5 Qe5 28.fe5+= Rd4 29.a5 Rbd8 30.ab6 ab6 31.Ra7 R8d7 32.Rfa1 g6 33.Rf1 Kg7 34.Kg3 Kf8 35.Rf4+/– Rf4 36.Kf4 Ke7 37.Bf3 Bf3?? 38.Rd7+– Kd7 39.Kf3 Kc7 40.Ke4 Kd7 41.d4 Kc7 42.dc5 bc5 43.Kd3 Kb6 44.Kc3 Ka5 45.Kb3 Kb6 46.Ka4 Kb7 47.Ka5 (47.Ka5 f5 48.gf6 Kc8 49.f7 Kd7 50.f8Q h5 51.b6 g5 52.b7 g4 53.b8Q gh3 54.Qb7#) 1–0. De Visser,Arno – Junker, Copenhagen, 1981.

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