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1.b4 c6 2.Bb2 a5

(...)

3.a3 Na6 4.c3 Nf6 5.Nf3 b5 6.e3 e6 7.Be2 Be7 8.d4 0–0 9.0–0 Bb7 10.Nbd2 d5 11.Ne5 Nb8 12.Nb3 a4 13.Nc5 Bc5 14.dc5 Nbd7 15.Nd3 Re8 16.f3 Qc7 17.Qc2 Ba6 18.Rad1 Rad8 19.Nf2 Ne5 20.Bc1 Ng6 21.f4 Bc8 22.Ng4 Ng4 23.Bg4 f5 24.Bh5 e5 25.g3 Be6 26.Rf2 (26.Bb2!?=) 26...d4–/+ 27.cd4 Bb3 28.Qd2 Bd1 29.Qd1 ed4 30.ed4 Qf7 31.Rf3 Re4 32.Bb2 Qa2 33.Rf2 Qe6 34.Re2 Re8 35.Re4 fe4 36.Be2 Ne7 37.Bg4 Qd5 38.Ba1 Nf5 39.Bf5 Qf5 40.Qe2 (better is 40.d5 cd5 41.Qe2–+) 40...e3 41.Bb2 Qb1 42.Kg2 Qb2!! 43.Qb2 (43.Qb2 e2) 43...e2 44.Qa2 Kf8 (44...Kf8 45.Qb1 e1Q 46.Qf5 Kg8–+) 0–1. Reussner,Hans_Dieter – Wassermann,Felix, desc–online.de, 2002.

3.a3 Qc7 4.e4 e5 5.Nf3 f6 6.b5 Bc5 7.d4 ed4 8.Bd4 Bd4 9.Qd4 Ne7 10.b6 Qd8 11.Nc3 0–0 12.Bc4 d5 13.ed5 cd5 14.Nd5 Kh8 15.Nc7 Nf5 16.Qd8 Rd8 17.Na8 Nd4 18.0–0–0 Nbc6 19.Nd4 Nd4 20.Rhe1 g6 21.Rd4 Rd4 22.Re8 Kg7 23.Rc8 Re4 24.Bd5 Re2 25.Rc7 Kh6 26.Rb7 Rf2 27.Re7 Kg5 28.b7 Rf1 29.Kb2 Rb1 30.Kb1 a4 31.b8Q h5 32.Qg3 1–0. mtra – Werthenstrasse, Internet, 2002.

3.c3 Na6 4.a3 (4.Qb3 A) 4...e5 5.c4 (5.ba5 Qa5 6.Nf3 Nf6 7.e3 e4 8.Nd4 Nc5 9.Qc2 d5 10.c4 dc4+=; 5.e3 Nf6 6.Be2 d6 7.ba5 Nc5 8.Qb6 Qb6 9.ab6 Na4 10.Ba3 Nb6+=) 5...d6 6.a3 Be6 7.d4 ed4 8.Bd4 ab4 9.ab4 d5 10.c5 Nf6=; B) 4...d6 5.ba5 Nc5 6.Qb6 Qb6 7.ab6 Na4 8.Bc1 Nf6 9.d3 e5 10.e4 Be6+=) 4...d5 (4...Nf6 5.c4 ab4 6.ab4 d5 7.b5 cb5 8.cb5 Nc7 9.Ra8 Na8 10.Nf3 Nb6=) 5.e3 (5.Nf3 Nf6 6.e3 Bg4 7.b5 Qb6 8.c4 cb5 9.cb5 Nc5 10.Bd4 Qd6=) 5...Nc7 (5...e5 6.c4 f6 (6...dc4 7.Bc4 b5 8.Bb3 f6 9.Qh5 g6 10.Qf3 Bd7=) 7.cd5 ab4 8.dc6 bc6 9.Qh5 (9.d4= ba3 10.Ba3 Qa5+=) 9...g6 10.Qe2 Bf5=) 6.d4 (6.Nf3 Bg4= (6...ab4 7.cb4 Bf5 8.Be2 f6 9.d4 e6 10.0–0 Bd6=) 7.Be2 Bf3 8.Bf3 e5 9.0–0 Bd6 10.d3 Nf6=) 6...Nf6 (6...Bf5 7.Nf3= e6 8.Be2 Nf6 9.0–0 Bd6 10.Nh4 Be4+=) 7.Bd3 g6 (7...e6 8.Nf3= Bd6 9.0–0 0–0 10.Ne5 ab4=) 8.Nd2 (8.Nf3 Bf5 9.0–0 e6 10.Bf5 gf5=) 8...Bg7 (8...Bf5 9.Bf5 gf5 10.ba5 Rg8=) 9.Ngf3 0–0 (9...Bf5 10.Bf5 gf5=) 10.Qc2 (10.0–0 Qd6=) 10...Nce8 (10...ab4 11.cb4 Bg4 12.Ne5=; 10...Bg4=) 11.Nb3 (11.0–0 Qd6+=) 11...ab4 12.cb4 Nd6 13.0–0–0 (better is 13.Ne5!?=) 13...Bf5 14.Ne5 Bd3 15.Rd3 Nd7 16.Nd7 Qd7 17.f3 (17.Kd1 b6–/+) 17...Nc4 18.Nd2 Nb2 19.Qb2 e5 (19...Qf5 20.e4 Qg5 21.Rg1–/+) 20.Nb3 (20.de5 Qe6 21.f4 f6 22.ef6 Bf6+=) 20...ed4 21.ed4 Qf5 22.Kc2 (22.Rc3 Qf4 23.Kd1 Bd4 24.Nd4 Qd4 25.Qd2 Qf6–/+) 22...Rfe8–+ 23.Kc3 (23.g4 Qe6–+) 23...b6 24.Ra1 (24.g4 Qf4–+) 24...Rac8 25.g4 Qf6 26.Qf2 c5 27.Rdd1 cd4 28.Kd2 Qf4 (28...Qf4 29.Qe3 Qe3#) 0–1. Gil Clariana,Jord (1870) – Djingarova,E (2305), IX Miquel Mas de Figueres Open, 2008.

3.c3 g6 4.Qa4 Bg7 5.b5 d5 6.d4 Nf6 7.h3 0–0 8.g4 Bd7–/+ 9.e3 cb5 10.Bb5 Bb5 11.Qb5 Qd7 12.Qd7= Nfd7 13.Ba3 Nc6=+ 14.Nd2 b5 15.Nb3 Rfc8 16.Bc5? e5 17.Nf3? e4–+ 18.Nh4 Nd8 19.Ng2? Ne6 20.Nf4? Nec5 21.Nc5 Nc5 22.dc5? Bc3 23.Ke2 Ba1 24.Ra1 Rc5 25.Kf1 b4 26.Ne2 Rac8 27.Kg2 Rc2 28.Nd4 Rc1 29.Nb3 Ra1 30.Na1 a4 31.Kg3 Rc1 32.Kf4 Ra1 33.Ke5 Ra2 34.Kd5 b3 35.Ke4 Rf2 36.Kd4 b2 (37.h4 b1Q–+) 0–1. riverborne – poppp4, Caissa's Web, 2006.

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

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

3.e4 ab4!? 4.a3 ba3 5.Na3 Nf6 =+.

3.e4 d5 4.ed5 Qd5 5.Nc3 Qe5 6.Be2 Nf6 7.Nf3 Qc7 8.ba5 Bg4 9.h3 Bf3 10.Bf3 e6 11.0–0 Bd6 12.Ne4 Nbd7 13.Nd6 Qd6 14.Bc3 0–0 15.d3 Nd5 16.Bd5 ed5 17.Qf3 Qc5 18.Bg7 Kg7 19.Qg4 Kh8 20.Qd7 Qc2 21.Qb7 Ra5 22.Qe7 ½–½. DN Davis – Paetzold (1845), IECG 1995.

3.e4 e6 4.b5 d5 5.Nc3 Nd7 6.bc6 bc6 7.Qe2 Qb6 8.Rb1= Ba6 9.d3?? Bb4–+ 10.ed5? Bc3 11.Bc3 Qb1 12.Kd2?! cd5 13.Nf3?? Rc8 14.Ng5 Rc3 (15.Qd1 Qd1 16.Kd1 Ra3–+) 0–1. Grant – Gates, corr OUCCC, 1994.

3.a3 Qb6

(--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5).

4.c3 (--> 3.c3 Qb6 4.a3).

4.c3 ab4 5.ab4 Ra1 6.Ba1 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3).

4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1).

4.e3 ab4 5.ab4 Ra1 6.Ba1 Qb4 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.e3 Qb4).

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5 7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.Nf3).

3.a4 ab4

4.d4 d5 5.Nf3 Nd7 6.e3 Ngf6 7.Qd2 e6 8.Bd3 Bd6 9.c3 Qe7 10.cb4 Bb4 11.Bc3 Bd6 12.0–0 0–0 13.h3 e5 14.de5 Ne5 15.Ne5 Be5 16.Be5 Qe5 17.Nc3 Bf5 18.Rfe1 Bd3 19.Qd3 Ne4 20.Ne4 Qe4 21.Qb3 Ra7 22.a5 Rfa8 23.Ra4 Qe7 24.Qa2 h6 25.f3 Qc5 26.Kh1 Ra5 27.Ra5 Qa5 28.Qb3?? Qc7 29.e4 d4 30.Qc4 Rd8 31.Rd1 c5 32.h4 Qc6 33.e5 b5 34.Qd3 c4 35.Qf5 Qe6 36.Qf4 d3 37.Qe4 Qd5 38.Qf4 c3 39.g4 d2 40.g5 c2 41.gh6 cd1Q (41...cd1Q 42.Kg2 Qe2 43.Kg3 d1Q 44.h7 Kh8 45.h5 Qdf3 46.Qf3 Qf3 47.Kh4 Qg4#) 0–1. iczker – gosh1991 (1850), kurnik, 2012.

4.e3 d5 5.Nf3 e6 6.d4 Nf6 7.Be2 Be7 8.0–0 0–0 9.Nbd2 b6 10.Bd3 c5 11.Bb5 c4 12.Nb1 Na6 13.Bc6 Ra7 14.Ne5 Ne4 15.Bb5 Nb8 16.Qe2 Nd6 17.Re1 f6 18.Nc6 Nc6 19.Bc6 Qc7 20.Bd5 ed5 21.c3 b3 22.Ba3 Bf5 23.Qh5 Bg6 24.Qd5 Kh8 25.Nd2 Bf7 26.Qf3 Rfa8 27.Red1 Ra4 28.Bd6 Ra1 29.Bc7 Rd1 30.Qd1 b2 31.Bb6 Ra1 32.Nb1 Bg6 (time, 0–1). Machete99 – guest828, ICC, 2002.

4.e3 Nf6 5.d4 e6 6.Qd2 d5 7.c4 dc4 8.Bc4 Nbd7 9.Nf3 Ne4 10.Qe2 Nb6 11.Nbd2 Ra4 12.Ra4 Na4 13.Ne4 f5 14.Ng3 b5 15.Bb3 Qa5 16.0–0 Nc3 17.Bc3 bc3 18.Ra1 Qb4 19.Qc2 Bd6 20.Ra8 0–0 21.Nf5 Bb7 22.Be6 Kh8 23.Rf8 Bf8 24.Ne5 h6 25.Nf7 Kh7 26.N5d6 g6 27.Nb7 Qb2 28.Bf5 gf5 29.Qf5 Kg7 30.h4 c2 31.Nbd6 c1Q 32.Kh2 Bd6 33.Nd6 Qb3 34.Ne8 Kg8 35.Nf6 Kf7 36.Nd5 Kg7 37.Qf6 Kh7 38.Qf7 Kh8 39.Qf8 Kh7 40.Qf7 Kh8 41.Qf8 Kh7 42.Qf7 ½–½. popovicigelu – expatrie (1830), kurnik, 2012.

3.b5 d5

(--> 1.b4 a5 2.b5 d5 3.Bb2 c6).

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

4.Nf3 Nf6 5.e3 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.Bb2 Nf6 5.Nf3).

3.b5 d6

4.c4 c5 5.Nf3 Bf5 6.d3+= h6 7.e3 Nf6 8.Be2 Nbd7 9.0–0 g5 10.Nbd2 Bg7 11.Ne4 Rg8 12.Ng3 White fights for the Initiative 12...Bg6 13.Re1 b6 14.Nd2 Ne5 15.d4 Nd3 16.Bd3+– Bd3 17.e4 cd4 18.Qb3 Bc4 19.Qc4 e5 20.Nf5 Qd7 21.Qd3 Rc8 22.Nc4 Bf8 23.Nb6 Qb7 24.Nc8 Qc8 25.Rac1 Qb7 26.Bd4 ed4 27.e5 de5 28.Re5 Kd8 White now must not overlook the idea Qb6 29.Qd4 Qd7 30.Qb6 (30...Qc7 31.Qc7#) 1–0. pierre (2385) – El Caballero (1940), ChessWorld.net, 2005.

4.c4 Bd7 5.e3 e5 6.Nc3 Nf6 7.d4 ed4 8.Qd4 Be7 9.Nf3 0–0 10.a3 (10.Bd3 Bg4+=) 10...Be6 (10...Re8 11.Bd3+=) 11.Be2 Nbd7 12.Na4 d5 13.cd5 Bd5 14.0–0 Bf3 15.gf3 c5 16.Qc3 Nb6 17.Nb6 Qb6 18.Bc4 Rad8 19.Kh1 Rd6 20.Rg1 Rfd8= 21.Qe5 Bf8 22.Rg5 Rd1 23.Rd1+= Rd1 24.Kg2 Qd8?? 25.Qf6+– Qf6 26.Bf6 h6 27.Rg4 Kh7 28.Be5 Rd7 29.a4 b6 30.Bc3 (30…h5 31.Rg5+–; 30.f4 f6 31.Bb2 h5+–) 1–0. Holz auf der Heide,Gerhard – Stegner,Marco, Leipzig VfB op 2nd, 1995.

4.c4 Nf6 5.e3 =.

4.e4 Nf6 =.

3.c3 e6

4.e3 b5 5.Qf3 Nf6 6.Bb5 ab4 7.cb4 Nd5 8.Bc4 Nb4 9.Qd1 d5 10.a3 dc4 (10...N4a6) 11.ab4 Ra1 12.Ba1 Na6 13.Qa4 Nb4 14.Bc3 Nd3 15.Ke2 Qd5 16.Nf3 Be7? (16...f6; 16...Nc5) 17.Bg7 Rg8 18.Nc3 Nc5 19.Nd5 Na4 20.Ne7 Ke7 21.Bd4 c5 22.Be5 f6 23.Ra1 1–0. Diener – Sterle, corr 1981.

4.e3 Nf6 5.b5 c5 6.a4 d5 7.c4 Nbd7 8.Nf3 b6 9.d3 Bb7 10.Nbd2 Be7 11.Be2 0–0 12.0–0 Re8 13.Ne5 Qc7 14.f4 Ne5 15.Be5 Qd8 16.Bf3 Bd6 17.Bb2 Rb8 18.g3 Bf8 19.Qe2 g6 20.Rad1 Bg7 21.Be5 Ra8 22.d4 cd4 23.Bd4 Nd7 24.Nb3 Bd4 25.Nd4 Nf6 26.Qg2 Rc8 27.cd5 1–0. Diener – Muster, corr 1981–82.

4.g3 Nf6 5.Bg2 ab4 6.cb4 Bb4 7.Qb3 Qe7 8.Nf3 d5 9.0–0 c5 10.a3 Ba5 11.Nc3 0–0 12.Nb5 Nc6 13.Ne5 Bd2 14.Rfd1 Ba5 15.Rac1 c4 16.Qc2 Nd7 17.Nd7 Bd7 18.e4 de4 (18...Qc5 19.ed5 Qb5 20.dc6 Bc6 21.Bc6 bc6 22.Rd4–/+) 19.Be4 g6 20.a4 Nb4 21.Qc4 Bb5 22.Qd4?? e5–+ 23.Qe5 Qe5 24.Be5 Ba4 25.Rd4 Rfe8 26.Rb4 Bb4 27.Rc4 Re5 28.Rb4 b5 29.Ba8–/+ Rc5 30.Bf3 Kg7 31.Kg2 Kf6 32.Rf4 Ke6 33.Re4 Kd6 34.Re3 b4 35.Rd3 Kc7 36.Bg4 b3 37.Rd7?? Bd7 38.Bd7 Kd7 39.Kh3 b2 40.f4 b1Q 41.g4 Qg1 42.g5 Rc3 43.Kh4 Qh2 44.Kg4 Rg3# 0–1. hgflyer – Mutterficker, Live Game Caissa's Web, 2004.

3.c4 ab4

4.Qb3 Qa5 (4...e6 5.e4–/+) 5.e3 (5.a3 Qa4 6.Qb4 d6=) 5...Qa4 6.Qa4 Ra4 7.Nf3 Nf6 8.d4 e6 9.Bd3 Be7 10.0–0 0–0 11.Nbd2 c5 (better is 11...b6!?+=) 12.dc5+= Bc5 13.Ne4 (13.Ng5!? Be7 14.c5=) 13...Ne4+= 14.Be4 Nc6 15.Ng5 h6 16.Nf3 Ne7 17.Rfd1 d6 18.Nd4 Bd7 (18...f5 19.Bc2 Ra6 20.Nb3+=) 19.Bb7= Rb8 20.Be4 Rc8 21.Bc2 Raa8 22.Bb3 (22.Nb3 Ba4=) 22...Nc6 23.Nc6 Bc6+= 24.Bd4 Bd4 25.Rd4= Rd8 26.Rad1+= d5 27.cd5+– Bd5? 28.e4 Bb3 29.Rd8 Rd8 30.Rd8 Kh7 31.ab3 Kg6 32.Rb8 Kf6 33.Rb4 Ke5 34.f3 Kd6 35.Rc4 Ke5 36.b4 Kf6 37.b5 Kg6 38.b6 Kf6 39.b7 Kg6 40.b8Q Kf6 41.Qf4 Kg6 42.Rc7 f6 43.Qg4 Kh7 44.Qg7 1–0. Fournier,Frederic (1635) – deco20, Active, 2007.

4.d4?! d5! 5.Nd2 dc4! 6.Nc4 Nf6 7.Nf3 Be6 8.Nce5 Ne4 9.e3 Bd5 10.Be2 e6 11.0–0 f6! 12.Nd3 Nd7 13.Qc2 Qa5 14.Nc5 Bc5 15.dc5 Nec5. Sterle – Schuehler, corr 1981–82.

4.d4 Nf6 5.f3 d5 6.Nd2 Bf5 7.g4 (7.cd5 cd5 (< 7...Qd5 8.e4 Be4 9.Bc4 Bf3 10.Ngf3+/–) 8.g4 Bg6–/+) 7...Bg6 8.Bg2 e6 9.h4 h6 10.Nh3 Qc7 11.Nf2 Nbd7 12.e4 Nb6 (13.h5 Bh7 14.cd5 ed5–/+) –/+. Sterle – Grund,Karl, corr 1981–82.

4.Nf3 d5 5.e3 Bf5 6.d4 Bg4 7.Be2 Nf6 8.0–0 e6 9.Re1 Be7 10.Nbd2 0–0 11.Nb3 Nbd7 12.Qc2 dc4 13.Qc4 Nb6 14.Qc2 Nbd5 15.e4 Nf4 16.e5 Ne2 17.Qe2 Nd5 18.h3 Nf4 19.Qe3 Nd5 20.Qd3?? Nf4?? 21.Qe3 Nd5 22.Qd3 Nf4?? 23.Qe3= Nd5 (Better is 23...Bf3 24.Qf3 Nd5–+) ½–½. Bonetti,Shane – MacChess 5.0, 2000.

3.Nf3 ab4

4.e3 d5 5.a3 e6 (5...ba3 6.Ba3 Na6 7.Be2+=) 6.c4 (better is 6.ab4!? Ra1 7.Ba1=) 6...bc3–/+ 7.Nc3 Nf6 8.Be2 Nbd7 9.d4 Bd6 10.–0 0–0 11.Bd3 e5 12.de5 Ne5 13.Ne5 Be5 14.Qc2 Bh2?? (better is 14...Re8–/+) 15.Kh2+= Ng4 16.Kg1 Qh4 17.Rfe1 Qh2 18.Kf1 Re8 (18...Ne5 19.Ne2 Nd3 20.Qd3 Qh1 21.Ng1–/+) 19.Ke2 (better is 19.Nd1!?+=) 19...Qg2+= 20.Bh7 Kf8 (20...Kh8 21.Kd2 Ne5=) 21.Kd1?? (21.Nd1 g6 22.Qc5 Re7 23.Qb4=) 21...Qf2 (21...g6!? 22.Kc1 Qf2 (22...Nf2 23.Nd1+/–) 23.Qf2 Nf2 24.Bg6 d4–/+) 22.Qf2+= Nf2 23.Ke2 (23.Kd2!?+=) 23...Ng4–/+ 24.Nd1 g6 25.Rf1 Bf5 (25...Ke7 26.Rf4–/+) 26.Bd4 (26.Rf5 gf5 27.Bf5 Nh6+=) 26...Ra4 27.Kd2 Rc4 (better is 27...Ne5!?–/+) 28.Rf5= gf5 29.Bf5 Nh6 30.Bd3+= Ra4 31.Bc5 Kg8= 32.Nf2 f5 33.Rb1 b5 34.Rg1 Kf7 35.Nh3 Rg4 36.Rg4 fg4–/+ 37.Ng5 Kf6 38.Nh7 Ke5 39.Ke2 Nf5–+ 40.Ng5 Rg8 41.Nf7–/+ Ke6 42.Bf5 Kf7 43.Bd7 Rg6 44.Kf2 Kg7 45.Kg3+= 1–0. Wurm,Tamas – Vermaas,Fred, IECG, 2004.

4.e4 Nf6 5.Bf6 ef6–/+ 6.Bc4 d6 7.h3 Be7 8.0–0 0–0 9.d4 d5 10.ed5 cd5 11.Bb3 Nc6 12.c3 bc3 13.Nc3 Be6 14.Re1 Bb4 15.Re2?? Bc3–+ 16.Rc1 Bb4 17.Qd3 Bd6 18.Rce1 Qd7 19.Nh4 Na5 20.Ba4 Qa4 21.Re3 Nc4 22.Re6 fe6 (23.Re6 Qa2–+) 0–1. Dazzer – touchdown, ChessWorld.net, 2005.

3.a3 ab4

4.a4 d5 5.Nf3 Bf5 6.e3 e6 7.Ne5 Nf6 8.Be2 Be7 9.0–0 0–0 10.g4 Bg6 11.d4 b6 12.h4 h6 13.Ng6 fg6 14.Nd2 Nh7 15.h5 gh5 16.gh5 c5 17.Nf3 Nc6 18.c4 bc3 19.Bc3 Bd6 20.Qc2 Rf5 21.dc5 bc5 22.Rfb1 Ng5 23.Rb7 Bc7 24.Qd1 Qd6 25.Qd2 Rf3 26.Bf6 Qh2 (27.Kf1 Qf2#) 0–1. Tiedemann,Joern (1810) – Walter,Mario (1885), RSX9E – A00 – Sokolsky–2, 2004.

4.e4 e5 5.ab4 (5.Be5 A) 5...Nf6 6.Bd3 (6.ab4 Ra1 7.Ba1 Bb4 8.e5 Qa5 9.Bd4 Ne4 10.Bd3; 6.Nf3 ba3 7.Bb8 Rb8 8.e5 Ne4 9.Bd3 d5 10.ed6) 6...d5 7.ed5 Qe7 8.Qe2 Nd5 9.Nf3 Nd7 10.ab4; B) 5...d5 6.ed5 Qd5 7.Qe2 Ne7 8.c4 Qa5 9.ab4 Qb4 10.Ra8; C) 5...Qe7 6.ab4 (6.Nf3 Nf6 7.Bd3 d5 8.0–0 de4 9.Re1 ed3 10.Bf6) 6...Ra1 7.Ba1 Qe4 8.Qe2 d5= 9.b5 Nf6 10.Bf6; 5.Nf3 Nf6 6.ab4 Ra1 7.Ba1 Bb4 8.Be5 Na6 9.c3 Be7 10.Bf6) 5...Ra1 6.Ba1 f6 (6...Qe7 7.Qh5 (7.Nf3 Nf6 8.Bd3 Na6 9.Be5 Nb4 10.Nc3) 7...d6 8.Nf3= Na6 9.Bc3 g6 10.Qg5; 6...d6 7.Nf3 Nf6 8.Nc3 Be7 9.Bc4 b5 10.Be2) 7.b5 (better is 7.Be5!? Na6 (7...fe5 8.Qh5 Ke7 9.Qe5 Kf7 10.Qb8) 8.Ba6 ba6 9.Bc3+/– d5 10.Qh5) 7...d5= 8.ed5 (8.bc6 bc6 9.Nc3 Bc5 10.Be2) 8...cd5 9.c4 (9.Nf3 Bd6 10.c4) 9...d4 (9...Nd7 10.cd5) 10.Nf3 (10.Bd3 Ne7=) 10...Qa5 11.Bb2 Bf5 (better is 11...Nd7=) 12.g3?? (better is 12.Nh4 Be4 13.f3=) 12...Qa2–+ 13.Nc3 dc3 14.Bc3 Bc2 15.Qc1 Ba3 16.Qa1 Qa1 17.Ba1 Be4 18.Be2 Bc5 19.0–0 Ne7 20.Ne5? fe5 21.Be5 0–0 22.d4 Nd7 0–1. Salihbegovic,Edim – Wielenga,Wiebe (2160), Harmonie Open A, Groningen NED, 2005.

4.Nf3 Nf6 5.e3 d5 6.c4 e6 7.Qc2 ba3 8.Na3 Be7 9.Be2 0–0 10.0–0 Nbd7 11.Ra2 (11.d4 b6=+) 11...Nb6 (11...dc4 12.Qc4 e5 13.Rfa1–/+) 12.Rfa1 (12.Ng5 Ne4 13.Ne4 de4=) 12...dc4 13.Nc4 Ra2 14.Ra2 Nc4 15.Bc4 b5 16.Be2 Bb7 17.Ra7 Qb6=+ 18.Ra1 Ra8 19.Ra8 Ba8 20.Ng5 g6 21.Qc3 b4 22.Qe5=+ c5 23.Bc4 Qd8 24.Be6 fe6 25.Qe6 Kh8?? 26.Nf7+– Kg7 27.Nd8 Bd8 28.Qc8 (28…Kh6 29.Qd8+–) 1–0. Heinzel,Mark – Weinrich,Bernd, Augsburg op 2nd, 1995.

4.ab4 Ra1

5.Ba1 b5 6.e3 Qc7 7.Nf3 Qd6 8.Be5 Qb4 9.c3 Qc5 10.Bb8 e6 11.d4 Qb6 12.Bf4 Nf6 13.Bd3 Nd5 14.Bg3 b4 15.c4 Nc3 16.Qb3 Qa5 17.0–0 Be7 18.Nc3 bc3 19.Qc2 g6 20.c5 0–0 21.Rc1 Ba6 22.Qc3 Qc3 23.Rc3 Bd3 24.Rd3 Ra8 25.Rd1 Bd8 26.Ne5 Ra7 27.Rb1 f6 28.Nc4 Kf7 29.f3 Be7 30.h3 h5 31.Bb8 Ra4 32.Nd6 Bd6 33.Bd6 Ra3 34.Rb7 Ke8 35.Kf2 Ra2 36.Kg3 f5 37.f4 Ra3 38.Kf3 Ra8 39.Be5 Rc8 40.Ra7 Ke7 41.h4 Ke8 42.e4 Ke7 43.Ke3 fe4 44.Ke4 Ke8 45.Bd6 1–0. Wall,Bill – Vaherb, Microsoft Gaming Zone, 1999.

5.Ba1 b5 6.e4 Qb6 7.Nf3 Nf6 8.Bd4 Qb7 (9.Nc3 d6=). pcmvr (2390) – bumeyou (2200), net–chess.com, 2006.

5.Ba1 b5 6.e4 e6 7.d3 c5 8.c3 cb4 9.cb4 Nf6 10.Be2 Bb4 11.Bc3 Be7 12.Nf3 0–0 13.0–0 Qc7 14.e5 Nd5 15.Bd2 Bb7 16.d4 f6 17.Nc3 Nc3 18.Bc3 fe5 19.de5 d6 20.Bb5 de5 21.Be5 Bd6 22.Bd6 Bf3 23.gf3 Qb7 24.Bf8 Qb5 25.Qd8 Nd7 26.Bd6 Kf7 27.Qe7 Kg6 28.Qe6 Nf6 1–0. Nautiluschess – PolishDefender, ICS blitz, 2001.

5.Ba1 b5 6.Nf3 d6 7.e4 e5 8.d4 ed4 9.Bd4 Nf6 10.Bd3 Bg4 11.0–0 Nbd7 12.h3 Be6 13.Ng5 Qe7 14.f4 Ba2 15.Nd2 h6 16.Ngf3 Qd8 17.Qa1 Be6 18.f5 Bc4 19.Nc4 bc4 20.Bc4 Be7 21.Qa4 Qc7 22.Qa5 Qa5 23.ba5 0–0 24.Bd3 c5 25.Bb2 Rb8 26.Ba1 Rb7 27.a6 Ra7 28.Rb1 c4 29.Bc4 Ne4 30.Re1 Ndc5 31.Bd4 Ng3 32.Bc5 dc5 33.Ne5 Bf8 34.Nf7 Rf7 35.a7 (35...Nf5 36.a8Q+–) 1–0. miehnekort – NN, Yahoo, 2005.

5.Ba1 Qb6 6.c3 =.

5.Ba1 Qb6 6.e3 Qb4 7.c4 Nf6 8.Nf3 d6 9.Be2 e5 10.0–0 Be7. Baronov–Bochkarov, 1998.

5.Ba1 Na6

6.b5 Qa5 7.Nc3+= cb5 8.e4 b4 9.Nd5 e6 10.Ne3 Nf6 11.Bf6 gf6 12.Nc4 Qc7 13.Qf3 Bg7 14.Qg3 0–0 15.Qc7 Nc7 16.Nd6 Rd8 17.Nf3 Bf8 18.Nb5 Nb5=+ 19.Bb5 b6 20.e5 fe5–/+ 21.Ne5 Bg7 22.Nd3 Bb7 23.0–0 Bf8 24.Ra1 Be4 25.Kf1 d5 26.f3 Bg6 27.Ke2 Rc8 28.Kd1 Bd6 29.g3 h5 30.Ra6–/+ Bd3 31.Bd3=+ Bc5 32.Ke2 Kg7 33.f4 f6 34.Kf3 Bd4 35.Ra4 Bc5 (35...e5 36.Ra7 Kf8 37.fe5 fe5–/+) ½–½. Benussi,A – Welti,Manfred, corr SOK–96–118, 1997.

6.b5 Qa5 7.Nc3 Nc7 +=.

6.b5 cb5 7.Nc3 b4 8.Nb5 d6 9.e3 Bd7 10.f4 Qb6 (10...Qa5 11.Nd4+=) 11.Nd4 (11.Bd4 Nc5 12.Qa1 f6 (worse is 12...Bb5 13.Bc5 dc5 14.Qa8 Kd7 15.Bb5 Qb5 16.Qf8=) 13.Qa8 Kf7–/+) 11...Nf6–/+ 12.Nb3 e6 13.Nf3 Be7 14.Bd3 Nc5 15.Nc5 dc5 (15...Qc5?! 16.Bd4 Qc6 17.0–0=) 16.g4 (16.0–0 0–0–/+) 16...0–0 17.g5 Ne8 (17...Nd5!?–/+) 18.Ne5+= Bb5 19.Bh7 Kh7 20.Qh5 Kg8 21.Nf7 Rf7 22.g6 Bh4 23.Qh4 Rc7 24.Qh7 Kf8 25.Kf2 Rd7 (25...Qc6 26.Rc1 Qd5 27.d3+=) 26.d3+= e5 27.Be5 b3 28.c4 Bc4 ½–½. Hoch,Hubertus (2105) – Tritt,Maciej (1905), corr WS/M/165 ICCF, 2008.

6.b5 cb5 7.Nc3 b4 8.Nb5 d6 9.e4 Qa5 10.Nd4 Nc5 11.Bb5 Kd8 12.Bc4 Ne4 13.Bf7 e5 14.Nb3 Qc7 15.Bg8 Rg8 16.Ne2 Bf5 17.0–0 Be7 18.d3 Nf6 19.f4 Qb6 20.Kh1 Ng4 21.Qe1 Bd7 22.d4 Ne3 23.Rg1 Nc2 24.Qd2 Na1 25.Ra1 e4 26.Ra8 Bc8 27.Nc5 d5 28.Qa2–/+ b3 29.Nb3 Rf8 30.Na5 Qb5 31.Kg1 Bb4 32.Qb2 Rf7 33.h3 Rc7 34.Nb3 Bd6 35.Ra5 Qb4 36.Rd5 Be6 37.Rd6 Qd6 38.Nc5 Bd5 39.Qd2 b6 40.Na4 Bc4 41.Nec3? Bd3 (42.Qe3 Qb4–+; 41...Qb4 42.Qe3–+) 0–1. pierre (1660) – albatroz (1845), internet, 2005.

6.b5 cb5 7.e4 Qa5 8.Nc3 b4 9.Nd5 Nf6 10.Nf6 gf6 11.Ne2 Nc5 12.Ng3 h5 13.h4 (13.Nh5? Rh5 14.e5 fe5 15.Qh5 Qa1 16.Qd1 Qd1 17.Kd1 Ne4–+) 13...Rg8 14.Be2 Rg3 15.fg3 Ne4 16.Bd3 (16.Bh5 Bh6 17.g4 Bd2 18.Ke2 Qc5–+) 16...d5 17.0–0 Ng3 18.Rf2 Qa7 19.Qe1 Ne4 20.Be4 de4 21.Bb2 Qa2 22.Qa1 Qa6 23.Qe1 Qc6 24.d4 ed3 25.cd3 e5 26.d4 e4 27.Re2 f5 28.Qg3 Be6 29.Qe5 Bd6 30.Qh8 Kd7 31.Qh5 Qc4 32.Re1 Qd3 33.d5 Qd5 34.Rd1 Qc5 35.Bd4 Qb5 36.Rd2 b3 37.Qh8 f4 38.Be5 Qc5 39.Kh2 Bd5 40.Qh5 Kc6 41.Rd1 (41.Qh8 e3 42.Qe8 Kb6 43.Qd8 Qc7 44.Qc7 Kc7 45.Rd5 Be5 46.Kg1–+) 41...f3–+ 42.Bd6 Qd6 (42...Kd6?! 43.Qf7 fg2 44.Qg6 Kc7 45.Qg2–/+) 43.g3 Qc5 44.Qh6 Kb5 45.Qg5 Bc6 46.Qd2 Qc2 47.Qc2 bc2 (47...bc2 48.Ra1 e3–+) 0–1. Van Daatselaar (2230) – Luzuriaga (2375), WSTT/3/06/4 – Sokolsky Opening, A00, 2006.

6.b5 cb5 7.e4 Nc7 8.Nc3 b4 9.Nb5 Nf6 10.Bf6 ef6 11.Nf3 Be7 12.h3 0–0 13.Nc7 Qc7 14.Bb5 d5 15.ed5 Bf5 16.Ba4 Rc8 17.d3 Qc3 18.Kf1 Ra8 19.Qe2 Bf8 20.g4 Ra4 21.gf5 b3 22.cb3 Qb3 23.Ne1 Qd5 24.Qf3 Ra5 25.Qd5 Rd5 26.Ke2 Re5 27.Kf3 Rf5 0–1. marekt – nordlicht, gameknot.com, 2001.

6.b5 Nc7 7.bc6 dc6 8.Nf3 =.

6.c3 Qb6 7.Nf3 d5 8.e3 Nf6 9.Be2 Bg4 10.–0 e6 11.Na3 Bd6 12.Nc2 e5 13.d3 0–0 14.h3 Bh5 15.Nh2 Be2 16.Qe2 e4 17.Nd4 Qc7 18.g3 ed3 19.Qd3 Ne4 20.Nf5 Be5 21.Nf3 Ra8 22.Ne5 Qe5 23.Nh4 Nb4 24.cb4 (better is 24.Qb1!? Na2 25.Qb7+=) 24...Ra1–+ 25.Nf3 Rf1 26.Qf1 Qc3 27.Qb1 Ng3 (better is 27...h6 28.Kg2 b6–/+) 28.Ng5?? (28.Qa2 h6 29.fg3 Qe3 30.Kg2 Qe4+=) 28...Ne4 29.Ne4 de4 30.Qe4 Kf8 31.Kg2 Qf6 32.Qg4 Qg6 33.Qg6 hg6 (33...fg6?! 34.f4=) 34.Kf3 Ke7 35.Ke4 Ke6 36.h4 b6 37.Kd4 Kd6 38.f3 f5 39.e4 c5 40.bc5 bc5 41.Kc4? fe4 42.fe4 Ke5 43.Kc5 Ke4 44.Kc4 Kf4 45.Kd4 Kg4 46.Ke3 Kh4 47.Kf2 Kh3 48.Kg1 Kg3 49.Kh1 Kf2 50.Kh2 g5 51.Kh1 g4 52.Kh2 g3 0–1. Hal1958 – Kali, playchess.de, 2004.

6.c3 Nc7 7.Na3 g6 8.c4 Nf6 9.e3 Bg7 10.Nf3 0–0 11.Be2 d5 12.c5 Bg4 13.0–0 Bf3 14.Bf3 Nd7 15.Bg7 Kg7 16.Nc2 e5 17.d3 f5 18.Qa1 Qa8 19.Rb1 Nb5 20.Qb2 Qb8 21.Ra1 Qc7 22.g3 Nf6 23.Na3 Na3 24.Ra3 e4 25.de4 de4 26.Be2+= Rd8 27.Bc4 Qd7 28.Ra7 Qd1 29.Bf1 Rd7 30.b5 Kf7 31.bc6 bc6 32.Rd7 Qd7 33.Qd4 Ke7 34.Bc4 Qd4 35.ed4 Nd7 36.Kf1 Nf6 37.h3 Kd7 38.Ke2 Kc7 39.Ke3 g5 40.Be6 f4? 41.gf4+– gf4 42.Kf4 Kb7 43.Ke5 Nh5 44.Ke4 Ka6 45.Ke5 Kb5 46.Kd6 Nf4 47.f3 Nd3 48.h4 1–0. Fournier,Frederic (1880) – Katakrov (1820), Active (5/1), 2005.

6.c3 d5 7.e3 e5 8.Nf3 Bd6 9.d3 Nf6=+ 10.Be2 0–0 11.0–0 e4 12.Nd4=+ c5 13.bc5 Nc5 14.de4 de4 15.Na3 Qc7 16.Nab5 Bh2= 17.Kh1 Qb8 18.Bb2 Bd7 19.Ba3 Rc8 20.Bc5 Rc5–/+ 21.c4 Be5–+ 22.Kg1 Bb5 23.Nb5 Rc8 24.f4 ef3–+ 25.Rf3 Rc6 26.Bd3–/+ Ra6 27.Nd4 Ra3–+ 28.Bf5 Rc3 29.Qe2 Qc7 30.Nb5 Rc1 31.Rf1 Qc4 32.Qc4 Rc4 33.Kf2 h5 34.Rd1 Kf8 35.Bd3 Ra4 36.Rd2 Ke7 37.Bf5 Ra5 38.Bd3 Rb5 39.Bb5 Ne4 40.Ke2 Nd2 41.Kd2 h4 42.Kd3 g5 43.Ke4 Kd6 44.Bc4 f6 45.Kf5 Kc5 46.Be6 b5 47.Ke4 Kb4 (48.Kd3 Ka3–+) 0–1. Meisinger,Peter (1710) – Rosner,Dirk (1830), DESC, 2000.

6.c3 d5 7.Nf3 c5 8.bc5 Nc5 9.d4 Ne4 10.e3 Ngf6 11.Qb3 e6 12.Nbd2 Bd6 13.Ne4 Ne4 14.Bd3 0–0 15.0–0 Qc7 16.Rb1 Rd8 17.c4 dc4 18.Qc4 Qc4 19.Bc4 Bc7 20.Rc1 Bb6 21.Bd3 Nf6 22.Kf1 Bd7 23.Rb1 Ra8 ½–½. Woelfelschneider,Peter – Rosner,Dirk, TRS–9.02, 2000.

6.c3 d5 7.Nf3 Nf6 8.e3 e6 9.d4 Bd6 10.Bd3 0–0 11.0–0 Nb8 12.Nbd2 Nbd7 13.e4 e5 ½–½. Schwertel – Rosner, fax SOK–99–F003 1999.

6.c3 g6 7.c4 Nf6 8.Nf3 (8.b5!? cb5 9.cb5=) 8...Nb4+= 9.Qb3 Qb6 10.e3 Bg7 11.Be2 0–0 12.0–0 d6 13.Qa4 c5 14.Nc3 Bd7 15.Qb3 Ra8 16.Bb2 Bf5 17.d3 Ra6 18.Na4 Qc6 19.e4 (19.Bf6 Qa4 (19...ef6?! 20.Nc3+=; worse is 19...Ra4 20.Be7 Ra2 21.Re1–/+) 20.Qa4 Ra4 21.Be7 Bd3 22.Bd3 Nd3–+) 19...Be4 20.de4 Qa4 21.Qe3 Qc2 (21...Qa2 22.Bf6 Bf6 23.e5–+) 22.Bf6 Bf6 23.Rc1 (23.e5 de5 24.Qc5 Qe2 25.Qb4–+) 23...Qb2 24.Rd1 Ra2 25.Rd2 (25.Bf1–+) 25...Nc2 26.Qh6 (26.Qd3 Bc3 27.Rc2 Qc2 28.Qc2 Rc2 29.Bd3–+) 26...Qc1 27.Bf1 Ra1 (27...Ra1 28.Rd1 Qd1–+) 0–1. madik – psychobishop, gameknot.com, 2011.

6.c3 g6 7.Nf3 Bg7 8.d4 d5 9.e3 Nf6 10.Bd3 0–0 11.0–0 Bf5 12.Bf5 gf5 13.Bb2 Qd7 14.Nbd2 Nc7 15.Ne5 Qe6 16.Nd3 Ra8 17.Qc2 Ne4 18.Nf4 Qd7 19.Ne4 fe4 20.f3 Qf5 21.c4 e6 22.g4 Qg5 23.fe4 de4 24.b5 cb5= 25.Qe4 Ra2 (worse is 25...Qg4 26.Kh1 Ra2 27.Qb7+=; worse is 25...bc4 26.Qb7 Qd8 27.Nh5=) ½–½. pierre – 100le, internet, 2008.

6.Bc3 b5 7.e3 e6 8.Nf3 Nb4 9.Be2 Nf6 10.0–0 Be7 11.Nd4 (11.Bb4 Bb4 12.d4 0–0–/+) 11...0–0–/+ 12.Na3 Bb7 13.Ba1 Nbd5 14.Nb1 Qb6 15.Nc3 Nc7 16.Qb1 Ra8 17.Qb2 b4 18.Rb1 c5 19.Nf3 Nfe8 20.Nd1 Nb5 21.c3 (21.Qb3!?–+) 21...Na3 22.Rc1 b3 23.c4 Nc2 24.Nc3 (24.Rb1 Qa6 25.Qb3 Bf3 26.Bf3 Na1 27.Qb2–+) 24...Bf6 (24...Ra1?! 25.Ra1 Na1 26.Qa1–+; 24...Na1?! 25.Ra1 Ra1 26.Qa1–+) 25.Bd3 Ra2! 26.Qb1 Ra1 27.Qb2 Ra2! 28.Qb1 Bc3 29.dc3 Na3 (29...Na3 30.Bh7 Kh8–+) 0–1. Neumann,Frank (1650) – Kleinert,Stefan (2395), RS–Pyramide remoteschach.de, 2009.

6.Bc3 Qb6 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.Bc3 Na6).

6.Bc3 e6 7.b5 Nc5 8.e3 Nf6 9.Nf3 d5 10.Be2 Bd7 11.bc6 bc6 12.Ne5 Bd6 13.Nd7 Ncd7 14.0–0 0–0 15.d3 c5 16.Nd2 Qc7 17.d4? (Better is 17.f4!?=+) 17...cd4 18.Bd4 Bh2 19.Kh1 Be5 20.g3 Rc8 21.Bd3 Bd4 22.ed4 Qc3 23.Nf3 Ne4 24.Be4 de4 25.Ne1 Nf6 26.Kg2 Rc4 27.Qb1 g6 28.Qd1 Rd4 29.Qb1 Rd2 30.Qc1 e3 31.Nf3 Rc2 32.Qb1 Rf2 33.Rf2 ef2 34.Kf2 Ne4 35.Kg2?? Nf6 36.Qb8?? Kg7–+ 37.Ng5 Qd2 38.Kh3 Qg5 (39.Qd6 Qd5 40.Qd5 ed5–+) 0–1. valpa – kali, HCL–C1332 playchess.de, 2002.

6.c3 e5=+

7.e3 d5 8.Nf3 Bd6 9.Ba6 ba6 10.d3 Nf6 11.Qa4 Qb6 12.0–0 Qb5 13.Qc2 0–0 14.Nbd2 Re8=+ Black plans e4 15.h3 e4 16.c4=+ Qb7 17.de4= Ne4 18.Qb2 Bf8 19.c5= Bf5 20.Nd4 Nd2 21.Nf5? The pressure on g7 grows 21...Nc4?? 22.Qd4= Re4 23.Qc3 f6 24.Rc1 Re8 25.Qd4? Re4?? 26.Qc3= a5 27.ba5 Bc5 28.Qd3 Qa6 29.Bd4= Bf8 30.Bb6+= Re8 Attacking the isolated pawn on a5 31.Nd4 Ra8 The pressure on the isolated pawn grows 32.Rb1 Qc8= 33.Rc1 Qa6 34.Rb1 Qc8= 35.Rc1 Qa6 36.Rb1 (36.Nc6 Nb6 37.Qa6 Ra6 38.ab6 Rb6=) ½–½. spereira (1885) – albatroz (1855), Chesshere.com, 2005.

7.e3 Nf6 8.Ba6 ba6 9.d4 e4 10.Nd2 d5 11.Nb3 Bd6 12.Na5 Qc7 13.g3 0–0–+ 14.Qa4 Bd7 15.Ne2 c5! 16.Qa2 cb4 17.Nb3 Bb5 18.0–0 Qc4 19.Qc2 Qe2 20.Qe2 Be2 21.Rc1 h6 22.Nc5 Rb8 23.Rc2 Bc4 (24.cb4 Rb4–+; better is 23...bc3!? 24.Rc1–+) 0–1. chrisalvin2005 – smurilo (1840), internet, 2006.

7.e3 Nf6 8.Nf3 d6 9.Ba6 (9.b5 Nc7=) 9...ba6+= 10.Qa4 Qb6 11.Na3 (11.c4 Bf5 12.0–0 Be7+=) 11...Be7 12.0–0 (12.d3 0–0+=) 12...0–0 13.Rb1 (13.d3 Bf5 14.e4 Bg4+=) 13...Bd7 (13...Bf5 14.Rb3+=) 14.h3 (14.d3 Rb8+=) 14...Rb8 (14...c5 15.Nc4 Qb5 16.Qa2–/+) 15.Qd1 (15.d3 c5 16.Qc2 cb4 17.Rb4 Qc7+=) 15...Qc7 (15...e4 16.Nd4+=) 16.Nc4 (16.d3!?+=) 16...e4–/+ 17.Nh2 (17.Ne1 d5 18.Na3 c5–/+) 17...d5 18.Na3 Bd6 (18...c5 19.bc5 Rb1 20.Nb1 Bc5 21.c4–/+) 19.Nf1–/+ a5 (19...c5 20.d3–/+) ½–½. Lindebaum,Andre (1840) – Kinski,Andreas, Berlin GER Unicorn Open, 2007.

7.e4 d5=+ 8.Qa4 b5–/+ 9.Qb3 de4–+ 10.Ne2 Nf6 11.g3? Be6 12.Qa3 Qd3 13.Qb2 Qf3 14.Rg1 Ng4 15.Rg2 Bc4 16.d3?? ed3 17.Nd2 de2 (18.Nf3 ef1Q 19.Kd2 Qg2 20.Qb1 Qf2 21.Kd1 Qf1 22.Ne1 Nf2 23.Kc2 Qe2 24.Kc1 Qe1 25.Kb2 Qd2 26.Ka3 Nb4 27.cb4 Bb4 28.Qb4 Qa2#) 0–1. chrisalvin2005 (1655) – smurilo (1735), chessHere.com, 2006.

7.Nf3 e4 8.Nd4 d5 9.e3 Bd7 10.d3 Nf6 11.de4 de4 12.Nd2 c5 13.bc5 Nc5 14.c4 Bd6 15.Nb5 Bb8 16.Bd4 Ne6 17.Bf6+= Qf6 18.Ne4 Qe5 19.Nec3 Bc6=+ 20.Nd5 0–0 21.f4? Nf4–+ 22.Nf4 Qe3 23.Ne2 Bb5 24.cb5? Bc7 The mate threat is Ba5 (25.Qd2 Qa7–+) 0–1. pierre (1610) – smurilo (1665), chessHere.com, 2006.

7.Nf3 e4 8.Nd4 d5 9.e3 Bd7 10.Be2 Nf6 11.0–0 Bd6 12.d3 Qc7 13.h3 0–0 14.Nd2 c5 15.bc5 Nc5 16.de4 de4 17.c4 Rd8 18.Qb1 Be5=+ 19.Rc1 b6 20.Nb5? Bb5–+ 21.cb5 Rd2 (22.Rd1 Re2–+) 0–1. Gegonz – smurilo (1835), Chesshere.com, 2006.

6.c3 Nf6

7.d4 d5 8.e3 =+.

7.d4 g6 8.e3 Bg7 9.f4 0–0 10.Nf3 d6 11.Bd3 Bg4 12.0–0 Nc7 13.Nbd2 b5 14.Qc2 Qa8 15.Bb2 Qb7 16.Ra1 Ra8 17.Ra8 Qa8 18.h3 Qa2?? 19.hg4+– Ng4 20.Nf1 Nd5 21.e4 Nf4+= 22.Bc1?? Qc2–+ 23.Bc2 Ne2 24.Kh1 Nc1 25.N3d2 Ne2 26.Nb1 Nf2 27.Kh2 Bh6 28.g3 Ng4 29.Kg2 e6?? 30.Kf3 Ng3 31.Kg3= Nf6 32.Kf3 Kg7 33.Ne3 e5 34.Ng4 Ng4=+ 35.Kg4 Bc1 36.d5 cd5–/+ 37.ed5 h5 38.Kf3 f5–/+ 39.Bd3? Kf6 40.Bb5–/+ g5 41.c4 e4 42.Ke2 Ke5 43.Bc6 Kd4?? Black intends e3 44.b5= Kc5?? 45.Bd7?? f4=+ 46.Kd1 Bb2 47.Nd2+= e3 48.Ne4 Kc4 49.Ng5 Bf6 50.Nf3?? Kd3?? 51.Bf5+– Kc4 52.b6 Bd8 53.b7 Bc7 54.Ke2?? Bb8?? (better is 54...Kd5 55.Nh4 Kc5=) 1–0. ahogator (1995) – Eralos (1995), Buho21.com, 2006.

7.e3 Qb6 8.Nf3 d5 9.Be2 Bf5 10.0–0 e6 11.Na3 Bd6 12.Qa4 0–0 13.Nd4 Bg6 14.Ba6 Ra8 15.Qb3?? (15.b5 Bd3 16.Rc1 Ba3 (16...ba6?! 17.bc6 e5 18.Ndc2=+) 17.Qa3 cb5–/+ (17...ba6?! 18.bc6 Qc7 19.c4 dc4 20.Nf3+=)) 15...Ra6 (Better is 15...Qa6 16.Nab5 cb5–+) 16.Bb2 Ne4 17.Ra1 Nd2 18.Qd1 Ne4 19.Nac2 e5 20.Nb3 Ra1 21.Qa1 Nf2 22.Qa8 Bf8 23.Nc5 Qc7 24.Kf2 b6 25.Na6 Qe7 26.Ne1 Qf6 27.Ke2? Bh5 28.Nf3 e4 29.Ba3 b5 30.Nc5 ef3 31.gf3 Qf3 32.Kd3 Qe2 33.Kd4 f6 34.Qc6 Qc4 0–1. hal1958 – kali, HCL–A1256 playchess.de, 2003.

7.e3 Nc7 8.Na3 (8.Nf3 d5=) 8...d5 9.Nf3 Bg4 (9...g6 10.Bd3+=) 10.Be2 e6 11.h3 Bh5 12.Qb3 Be7 13.c4 0–0 14.c5 Nd7 15.d4 (15.0–0 Bf6=) 15...Ne8 16.b5 (better is 16.Nb1=) 16...Qb8 (16...Nef6!?+=) 17.Ne5 (17.bc6 bc6 18.Qb8 Nb8+/–) 17...Ne5 18.Bh5 Nd7 19.0–0 g6 (19...Nef6 20.Bf3+=) 20.Be2 (20.Bf3+=) 20...f5 (20...Nef6!?+=) 21.bc6+/– bc6 22.Qb8 Nb8 23.Rb1 Nd7 (23...Nf6 24.Rb7 Nfd7 25.Nc2+/–) 24.Rb7+– Nef6 25.Rc7 Ra8 26.Bb2 Rb8 27.Bc1 Bc5? (better is 27...Kf7+–) 28.dc5 Nc5 29.Rc6 Nfe4 (29...Nfd7 30.Bb5 Kf7 31.Bb2+–) 30.Bb5 (30.f3 Nc3 31.Bf1 N3a4+–) 30...Nb3 (30...Nb7 31.f3 Nd8 32.Rc7+–) 31.Bb2 Nec5 (31...Kf8 32.f3 Nec5 33.Be5+–) 32.Rc7 Rb7 33.Rc8 Kf7 34.Rh8 h5 35.Be5 Nc1 (35...Ke7 36.Be8+–) 36.Be8 Ke7 37.Nb5 Ne4 (37...N1d3 38.Bd6 Kf6+–) 38.Rh7 Ke8 39.Rb7 (39.Rb7 Nd3 40.Nd6 Kf8 41.Bg7 Kg8 42.Ne4 de4 43.Bf6+–) 1–0. Matveenko,Yury (2060) – Astakhov,Alexander (1750), Voronezh RUS, 2014.

7.e3 e6 8.Nf3 d5 9.Ba6 ba6 10.Qa4 Qb6 11.Ne5 Bb7 12.Na3 Bd6 13.Nd3 0–0 14.0–0 Ne4 15.Qd1 a5 16.ba5 Qa5 17.Nc2 Ra8 18.Nc1 Nc5 19.d4 Ne4 20.Nb3 Qa2 21.Nb4 Qa3 22.Nd3 Ba6 23.Bb2 Qa2 24.Nbc1 Qa5 25.Qc2 Bd3 26.Nd3 Qc7 27.f4 c5 28.Nf2 Nf2 29.Qf2 cd4 30.cd4 Ra2 31.Ra1? (Better is 31.Rc1 Qd7 32.Ra1 Ra1 33.Ba1=+) 31...Ra1–+ 32.Ba1 Qc1 33.Qf1 Qe3 34.Kh1 Qf4 35.Qf4 Bf4 36.Bc3 Kf8 37.g3 Bd6 38.Kg2 Ke7 39.Kf3 f5 40.h3 g5 41.Bd2 h6 42.Bc3 Kf6 43.Bd2 e5 44.de5 Ke5 (45.h4 gh4 46.gh4 h5–+) 0–1. hal1958 – kali, HCL–A819 playchess.de, 2002.

7.e3 g6 8.Nf3 d5 9.Ba6 ba6 10.Qa4 Bb7 11.0–0 Bg7 12.Ne5 0–0 13.Nc6?? (better is 13.c4=) 13...Qd7–+ 14.Ne7 Qe7 15.Qb3 Rc8 16.d4 Ne4 17.f3? (17.Qc2 Qc7–+) 17...Nd6 (17...Nc3 18.Bc3 Qe3 19.Kh1 Bd4 20.Re1 Qe1 21.Be1–/+) 18.Re1 Bh6 19.e4 de4 20.Qc2 Qf6 21.Qd1 ef3 0–1. Baer,Cy (1895) – Rosner,Dirk (2175), RSS5E easy–30, 2007.

7.Nf3 g6 8.e3 Bg7 9.Ba6 ba6 10.Qa4 Qb6 11.0–0 Qb5 12.Qc2 0–0 13.d3 d6 14.Nbd2 c5 (14...Bf5 15.e4 Bd7 16.Rb1=) 15.bc5= Qc5 16.c4 Qc7 17.Rb1 Bb7 (17...Bd7 18.Bc3=) 18.e4 Rb8 19.Qb3 Nd7 20.Bg7 Kg7 21.Qc3 e5 22.d4 Kg8 23.h4 (23.Qe3 ed4 24.Nd4 Ne5=) 23...h5 (23...ed4 24.Qd4 h5 25.Rb3=) 24.Ng5 (24.Qe3 ed4 25.Nd4 Ne5=) 24...ed4 25.Qd4 a5 26.Nf1 (26.Rb3 a4 27.Rf3 Rf8+=) 26...a4+= 27.Ne3 Ba8 28.Rd1 Qc5 29.Qd6 Qd6 30.Rd6 Nc5 31.e5 a3 32.Rd2 Rb1 33.Kh2 Bb7 34.f4? Kf8 35.Nh7+= Kg7 36.Nf6 Ne4 37.Ra2 Rb3 38.Ned5 Bd5 39.Nd5 Nc3 40.Nc3 Rc3 41.c5 Kf8 42.c6 Ke7 43.Ra1 ½–½. Morley,Paul (2270) – Tritt,Maciej (1895), corr WS/M/180 ICCF, 2008.

7.Nf3 d5

8.e3 Qb6 9.Be2 =.

8.e3 e6 9.d4 Bd6 10.Bd3 0–0 11.0–0 Nb8 12.Nbd2 Nbd7 13.e4 e5 14.ed5 cd5 15.de5 Ne5 16.Ne5 Be5 17.Nf3 Bg4 18.h3 Bf3 19.Qf3 Qc7 The backward pawn on c3 becomes a target 20.Bb2 Ra8 21.Re1 Rc8 Increases the pressure on the backward pawn 22.Bf5 Re8 23.Kh1 b6 24.Re2 g6 25.Bc2 h6 26.Bb3 Attacks the isolani on d5 26...Qd6 27.Bc1 Kg7 28.Bb2 b5 29.Re1+= Rd8 30.Kg1 Ne4 31.Re2 f5 32.Qd3 Bf6 33.Rc2 Qc6 34.Kh1 Be5 35.Kg1 Rd7 36.Qe3 Bf6 37.f3 Ng3 38.Bc1 g5 39.Qe1 f4=+ 40.Kh2 Re7 Threatening mate: Rxe1 41.Qd1 Qe6 42.Ra2 Bc3–/+ 43.Bd2 Bf6 44.Qg1 Qe5 45.Qb1 Qd4 Black gets in control 46.Be1 Nf1–+ 47.Kh1 Ne3 48.Re2 Ra7 49.Ba2 Qa1 50.Qa1 Ba1 51.g3 d4 52.gf4 gf4 53.Bb1 Bc3 54.Kh2 Ra1 55.Bc3 dc3 56.Be4 Rd1 57.Rf2 Rd4 58.Kg1 0–1. Crafty 19.01 – Fritz 8, 2005.

8.e3 Bg4 9.h3 Bf3 10.Qf3 =.

8.e3 b5

9.d4 Bf5 10.Bd3 Bd3 11.Qd3 =.

9.d4 Bg4 10.Bd3 e6 =.

9.d4 Bg4 10.h3 Bf3 11.Qf3 Nc7 12.Bd3 e6 13.Nd2 Be7 14.0–0+= 0–0 15.Bb2 Nd7 16.Ra1 Nb6 17.Bc2 f5 18.Nb3 Qd7 19.Bc1 Ra8 20.Ra8 Nca8 21.Nc5 Bc5 22.bc5 Nc4 23.Qf4 Nc7 24.f3 g6 25.Qg5 Kf7 (25...e5!?=) ½–½. Benassi,Aspasio (2180) – Beltran Seguer,Jose Javier (2090), EM/M/156 ICCF Email, 2001.

9.d4 Bg4 10.h3 Bf3 11.Qf3 e6 12.Bd3 =.

9.d4 Bg4 10.h3 Bh5 11.Bd3 =.

5.Ba1 d5

6.d4 Nf6 7.Nf3 Bf5 8.Ne5 e6–/+ 9.c3 Bd6 10.Nf3 Nbd7 11.g3 0–0 12.Bg2 (12.Nbd2 e5–/+ (12...Qc7 13.Nh4–/+ –0.94) 13.de5–/+; 12.Nh4 Bg4 13.h3–/+) 12...Qa8 (12...Qe7 13.0–0–/+) 13.Nbd2 Qa2 14.0–0 Ra8 15.h3 (15.Ng5 Bc2 16.Qc1 h6–/+) 15...h6 (15...b6 16.Qe1–/+) 16.Qb3 (16.Re1 b6–/+) 16...b6 17.Qd1 Qc2 18.Qc2 Bc2 19.Rc1 (19.Bb2 Ra2 20.Bc1 Bf5–/+) 19...Ra2 20.Ne1 (20.Kh2 Ne4 21.Ne4 Be4–/+) 20...Bg6 21.Nef3 Ne4 22.Ne4 Be4 23.e3 Kf8 24.Kf1 Ke7 25.g4 Bd3 26.Kg1 f5 27.Ne1 Bc4–+ 28.Bf1 Bf1 29.Kf1 fg4 30.hg4 e5 31.Nd3 e4 32.Nb2 g6 33.Ke2 Nf6 34.f3 ef3 35.Kf3 Ne4 0–1. Baer,Cy (1895) – Vehlow,Burkhard (2150), RSS4D easy–54, 2007.

6.e3 Qb6 7.b5 Nf6 8.c4 Bf5 (8...Bg4 9.Nf3 Nbd7 10.Nc3 e6 11.Qa4 Bf3 12.gf3 Bd6 13.Qa8 Bb8) 9.Nc3 (9.Bd4 Qc7 10.Nf3 Nbd7 11.cd5 Nd5 12.Nh4 c5 13.Bg7 Bg7) 9...e6 (9...Nbd7 10.Nf3 e5 11.Qa4 Be7 12.d4 e4 13.bc6 bc6) 10.Nf3 Nbd7 (10...Bg6 11.Be2 Nbd7 12.Qa4 Nc5 13.Qa8 Qd8) 11.Nd4 Bg6 (11...Bg4 12.f3 Bh5 13.g4 Bg6) 12.Na4 (12.bc6 bc6 13.Qa4 Bd6) 12...Qc7 13.bc6 (13.cd5 Nd5) 13...bc6 14.cd5 cd5 15.f4 Be7 16.Bb5 0–0 17.Nc6 Bd6 18.0–0 Ne4 19.Qc1 Qb7 20.Qb2 Ndf6 21.Ne5 Rb8–/+ 22.Ng6 Qb5 23.Qb5 Rb5 24.Ne5 Nd2 25.Rc1 Rb1 26.Rb1 Nb1 27.h3 Ne4 28.Nd3 Nbd2 29.Bd4 f6 30.Ndc5 Kf7 31.Ne4 Ne4 32.Nc3 Nc3 33.Bc3 Ke7 34.Kf2 Kd7 35.Ke2 Kc6 36.Kd3 Kb5 37.g4 Bf8 38.e4 Kc6 39.h4 Bd6 40.f5 e5 41.h5 h6 42.Bd2 Ba3 43.Be1 Kc5 44.Bf2 d4 45.Bh4 Kb5 46.Bg3 Bb4 47.Bf2 Bc5 48.Be1 Bb6 49.Bf2 Kb4 50.Be1 Kb3 51.Bd2 Bd8 52.Be1 Be7 53.Bf2 Bb4 54.Bg3 Kb2 55.Bf2 Kc1 56.Bh4 Kd1 57.Bg3 Bd2 58.Bf2 Be1 59.Bd4 ed4 60.e5 fe5 61.g5 Bb4 62.Ke4 Ke2 63.f6 gf6 64.gh6 Bf8 65.h7 Bg7 66.Kf5 d3 67.Kg6 Bh8 68.Kf7 d2 69.Kg8 d1Q 70.Kh8 Qh1 (70...Qh1 71.Kg7 Qh5 72.Kf6 Qh7 73.Ke5 Qd3–+) 0–1. Pappas,K (2090) – Papadakis,M (2120), 5th Gazi Open, Heraklion GRE, 2009.

6.e3 Nd7 7.c4 e6 8.c5 b6 9.d4 bc5 10.bc5 e5 11.Nf3 ed4 12.ed4 Ngf6 13.Bd3 Be7 14.0–0 0–0 15.Nc3 Qa5 16.Qa4 Qa4 17.Na4 Ne4 18.Re1 f5 19.Rd1 Bb7 20.Nc3 Ra8 21.Ne5 Ne5 22.de5 Bc5 23.Ne4 fe4 24.Be2 Ra2 25.Kf1 Kf7 26.Bc3 Ba6 27.Re1 Be2 28.Re2 Re2 29.Ke2 d4 0–1. phildo (1865) – cecherino (1925), gameknot.com, 2012.

6.e3 e6 7.b5 Nf6 8.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3).

6.e3 f6 7.Bd3 e5 8.Qh5 Ke7 9.Bh7 Na6 10.c3+= b5 11.Nf3 Nh6 12.Bc2 Bg4 13.Qg6 Bf3 14.gf3 Qe8 15.Qg3 g5 16.Qh3 Qd7 17.Qg2 f5? 18.Qg5+– Ke8 19.Qf6 Qg7?? 20.Qc6+– (20...Kd8 21.Qa6+–) 1–0. Wall,Bill – Oozzee, Internet, 2005.

6.Nf3 Na6 7.Bc3 =.

6.Nf3 Bf5 7.c3 Nd7 8.d4 Ngf6 9.Nbd2 e6 10.Nh4 Bg6 11.Ng6 hg6 12.e3 Bd6 13.Bb2 e5 (< 13...Bh2 14.Bd3+/–) 14.b5 ed4 15.cd4 Qa8 (< 15...Bh2 16.g3+=; < 15...Rh2 16.Rh2 Bh2 17.g3+=) 16.bc6 bc6 17.Qc2 0–0 18.Be2 c5 19.dc5 Nc5 20.0–0 Qa4 21.Qa4 Na4 22.Bd4 Nc5 23.Rd1 Nce4 24.Ne4 Ne4 25.f3 Nf6 26.e4! Bb4 27.e5 Nd7 28.f4 Rd8 29.Bf2 Nc5 30.Bf3 d4 31.Rd4 Rd4 32.Bd4 Ne6 33.Be3 f5 34.Bd5 Kf7 35.Kf2 Ke7 36.h4 Nc7 37.Bc4 Ne6 38.g4 Ba5 39.h5 fg4 40.hg6 1–0. orane (2200) – 300SPARTANS, Live Game Caissa's Web, 2004.

6.Nf3 Bf5 7.c3 Nf6 8.d4 Na6 9.e3 e6 10.Be2 Bd6 11.Nbd2 0–0 12.0–0 Bc7 13.Ne5 Be5 14.de5 Nd7 15.f4 Qb6 16.Rf3 Bg4 17.Rf2 Be2 18.Qe2 Ra8 19.Qd1 c5 20.bc5 Nac5 21.c4 Qb4 22.Bd4 Ra2 23.Bc5 Nc5 1–0. Pleschke – Romischke, 1996.

6.Nf3 f6 7.e3 e5 8.d3 Bb4–/+ 9.c3 Bd6 10.Be2 Ne7 11.e4 0–0 12.ed5 Nd5 13.0–0 Be6 14.d4 Nd7 15.de5 Ne5 16.c4 Nf4–+ 17.Ne5 Be5 18.Be5 fe5 19.Qc2 Ne2 20.Qe2–/+ Qd4 21.Rc1 Rd8 22.h3 e4 23.c5–/+ Rd5 24.Qa2?? Kf7 25.Qb3 Rd7 26.Qg3 Qf6 27.Nc3= Bd5 28.Nd5 cd5–/+ 29.Rd1 g6 30.Qb3 Qc6 31.Qe3 Qe6 32.Qh6 Kg8 33.Qe3 Qf5 34.Qa3 d4–/+ 35.Qb3 Qd5 Black prepares the advance d3 36.Qb6 Kg7 37.Re1 d3 38.Qb2 Qd4 39.Qd2 Re7 40.Kh2 Qc5 41.Re3 b5 42.Qe1 Qd4 43.Qd2 b4 44.f3 Qc3 (45.Qd1 b3 46.fe4 b2–+) 0–1. coolerdude – Bury born and bred, ChessWorld.net, 2004.

6.e3 Bf5

7.c4 dc4 8.Bc4 Qd6 9.d3 (9.Qf3 e6 10.e4 Qb4–/+) 9...b5 10.Ba2 Bd3 11.Qg4 f5 12.Qh5 g6 13.Qh4 e5 14.Bc3 (14.Nd2 Ne7–/+ (14...Qb4? 15.Qb4 Bb4 16.Be5+–)) 14...Nf6–+ 15.Nf3 Nd5?? (15...Ne4!? 16.Ne5 Be7–+) 16.Be5 (16.Bd5 A) < 16...Bb1 17.Be5 Qd5 18.Bh8+/– (18.Bb8? Bd3 19.Qd4 Qd4 20.ed4 Bb4 21.Kd1 Ke7–+); B) 16...cd5 17.Be5 Qb4 18.Nc3 Qb2=) 16...Qb4=+ 17.Qb4 Bb4 (17...Nb4? 18.Kd2 (18.Bh8?! Na2 19.Kd2 Be4=) 18...Be4 19.Be6+/– (19.Bh8?! Na2 20.Rd1 Bb4 21.Nc3 c5=)) 18.Nbd2 0–0 19.Nd4 Bc4 20.Bb8 (Better is 20.Bc4!? bc4 21.Ke2 Bd2 22.Kd2 c3 23.Kc2=+) 20...Ba2–+ 21.Be5 Ne7 22.Ke2 Bd2 23.Kd2–/+ Bd5 24.f3 Ra8 25.Rc1 h6 26.Bf6 Kf7 27.Bh4 g5 28.Bg3 Kf6 29.h3 Ra2 30.Rc2 Rc2 31.Kc2 Kg6 32.Be1 Bc4–+ 33.Bb4 Nd5 34.Bd2 c5 35.Ne6 Bf1 36.Nc5 Bg2 37.e4 Ne7 38.Kd3 Bh3 (39.Kd4 Bg2–+) 0–1. Romischke,W – Kern,M, Hessen clubgame, 1997.

7.d3 Na6 8.c3 e5 9.Nf3 Bd6 10.Be2 Nf6 11.0–0 0–0 12.Nh4 Be6 13.Nf3 Qc7 14.h3 e4 15.de4 de4 16.Nd4 Bd7 17.Nc6? bc6–+ 18.Ba6 Ra8 19.Qe2 Qb6 20.c4 Bb4 21.Rd1 Bh3 22.gh3 Be7 23.Bf6 Bf6 24.Bb5 cb5 25.cb5 Rb8 26.Nd2 Qb5 27.Qb5 Rb5 28.Ne4 Be7 29.Rd7 Kf8 30.Nc3 Rg5 31.Kh2 Rc5 32.Nd5 Bh4 33.f4 Ke8 34.Rd6 f5 35.Nb4 Rb5 36.Nd5 Kf7 37.Kg1 Rb1 38.Kg2 Rd1 39.Rd7 Ke6 40.Rg7 Rd5 41.Rh7 Rd2 42.Kf1 Be7 43.Rh6 Kd5 44.Rh7 Bc5 45.Rd7 Bd6 46.Rd8 Ke4 47.Ke1 Bb4 48.Rd2 Ke3 0–1. Bonetti,Shane – Tinker (2450), ICC, 2002.

7.d3 e6 8.Nd2 Nf6 9.c3 Bd6 10.Ngf3 0–0 11.Be2 e5 12.Qb3 Qe7 13.Nf1 Nbd7 14.Ng3 Bg6 15.Nh4 Qe6 16.e4 Ra8 17.0–0 c5 (Better is 17...Nf8!?=+) 18.Ng6+= hg6 (< 18...fg6 19.ed5 Qe7 20.b5+/–) 19.ed5 Qd5 20.Qd5 Nd5 21.Bf3 Nf4 22.Ne4 Be7 23.Nc5 Bc5 24.bc5 Nc5 25.d4 Nb3 26.g3 Nd2?? 27.Bb7+/– Ra7 28.Rd1 Ne2 29.Kg2 Nb3 30.Bf3 ed4 31.Be2 Na1 32.Rd4 Kf8 33.Bd1 Ke7 34.Ra4 Ra4 35.Ba4 Kd6 36.Kf3 Kc5 37.Ke3 Kc4 38.Kd2 g5 39.h3 f6 40.Bd1 g6 41.Ba4 Nb3?? 42.Bb3 Kb3 43.Kd3 Ka4 44.Kd4 Kb5 45.Kd5 (45...f5 46.Ke6+–) 1–0. Holzschuh,Gerald (2125) – Jugow,Alexander (2260), Frankfurt–ch, 1999.

7.Bd3 Bd3 8.cd3 e6 9.b5 cb5 10.Nf3 Nf6 11.Qb3 b4 12.Qa4 Nfd7 13.0–0 Nc6 14.Rc1 (14.Qd1!?–/+) 14...Qa5–+ 15.Qa5 Na5 16.Rc8 Ke7 17.Bb2 f6 18.Nd4 g6 19.Nc2 b3 20.Nd4 e5 21.Nb5 Kf7 22.N1c3 Nb6 23.Rc7 Ke6 24.Ne2 Nd7 25.Kf1 Bd6 26.Nd6 Kd6 27.Rc1 Ke6 (28.Bc3 Ra8–/+) 0–1. Sternik,Ryszard – Myrberg,Johnny, corr 3GMM½–05, 1998.

7.Nf3 e6 8.b5 c5 9.c4 Nf6 10.Be2 Nbd7 11.0–0 Qa5 12.Nc3 dc4 13.Bc4 Nb6 14.Be2 h6 15.Qb3 Be7 16.Bb2 0–0 17.d3 Qb4 18.Nd2 Rd8 19.e4 Bg6 20.Ra1 c4 21.Qb4 Bb4 22.Nc4 (22.dc4?? Rd2 23.Bc1 Rc2–+) 22...Nc4 23.dc4 Rd2 (23...Ne4?! 24.Ne4 Be4 25.Bc1=; 23...Be4?! 24.Ra4 Bc5 A) worse is 25.Ne4 Ne4 26.Kf1 Rd2–/+ (worse is 26...Bf2 27.Bf3 Nc5 28.Ra7=); B) 25.Ba3 Ba3 26.Ra3=) 24.Ra8 Kh7 25.Ba1 Bc3 26.Bc3 Re2 27.f3 Rc2 (27...Ne4!? 28.fe4 Be4 29.g3–+) 28.Bf6 gf6 29.Rc8 f5 30.e5 f4 31.c5? (better is 31.Rc7–+) 31...Bd3 32.g3 fg3 33.hg3 Bb5 34.Rc7 Kg6 35.f4 (35.Rb7 Bc6 36.Rb3 Kf5–+) 35...Bc6 36.Kf1 Rc5 37.Kf2 Rc2 38.Ke3 Rg2 39.Kd4 Rg3 0–1. Zaichuk,Vitaliy (2035) – Luzhinsky,Vitaly (2295), UKR–ch Alushta, 2009.

7.Nf3 e6 8.b5 Nf6 9.Nh4 Bg6 10.Be2 Be7 11.Ng6 hg6 12.0–0 Qd6 13.f4 g5 (better is 13...Nbd7=) 14.Be5+/– Qd8 15.fg5 Ne4 16.Bg7 Rh7 17.Be5 Bg5 18.Bd3 Nd7 19.Bd6 Ndf6 (19...Nd6 20.Bh7) 20.Be5 Nd7 21.Bd6 Ndf6 (21...Nd6 22.Bh7) 22.Bf4 Rg7 23.Be5 Rg8 24.Qf3 Qe7 25.bc6 bc6 26.Be4 Ne4 27.d3 Nd6?? (better is 27...Nc5+/–) 28.Bd6+– (28.Bd6 Be3 29.Kh1+–) 1–0. Pcmvr – Nc3, playchess.de, 2004.

7.Nf3 e6 8.Be2 Nf6 9.b5 Bd6 10.0–0 0–0 11.Nh4=+ Bg6 12.f4= Nbd7 13.Ng6 fg6 14.c4 Qc7 15.bc6 bc6= 16.d4 Bb4 17.Nc3 c5 ½–½. Reuter,Alfred J – Eisengraeber Pabst,Axel, DESC, 2000.

7.Nf3 Nf6 =.

7.g4 Bd7 8.Bd4 e6 9.Nc3 Qc7 10.Nf3= f6 11.Bc5 e5 12.Bf8 Kf8 13.Bh3 g5 14.e4 Ne7 15.Ng1 Na6 16.b5 White gets in control 16...cb5 17.Qf3 Kg7 18.ed5 The passed pawn on d5 will quickly become a dangerous weapon 18...b4 19.d6=+ Qd6 20.Ne4 Qe6 21.Ne2 Ng6 22.N2g3 Nh4 23.Nh5= f6 draws heavy fire 23...Kg6 24.Qd3+= Kh6 25.Nhf6 Bc6 26.Qe3 Threatening mate: Qxg5 26...Be4 27.Ne4 Rg8? 28.Ng5!+– Rg5 Decoy to g5 29.f4! Qc6? 30.fg5 Kg6 31.Rf1 (31...Kg7 32.Qf2+–) 1–0. Machete (2330) – bobfishrules (2110), ICC, 2003.

6.e3 Nf6

7.b5 Nbd7 8.f4 Qa5 9.Bc3 Qc7 10.Nf3 e6 11.Be2 Bd6 12.0–0 0–0 13.Qc1 e5 14.Ne5 Ne5 15.Be5 Be5 16.fe5 Qe5 17.Nc3 c5 18.Na4 d4 19.Qa3 Ne4 20.Rd1 Re8 21.Bf3 h5 22.Nb6 Bg4 23.Nc4 Qd5 24.Bg4 hg4 25.Qd3 g3 26.hg3 Qh5 27.Qf1 Nf6 28.g4 Ng4 29.Qf3 Qh2 30.Kf1= Qh4 31.Ke2 Re6 32.Ra1 g6 33.Re1 de3 34.de3 Nf6 35.Nd2 Qb4 36.c4 Qc3 37.Rd1 Qc2 38.Kf1 Kg7 39.Qe2 Rd6 40.Ke1 Qc3 41.Qf3 Nd7 42.Ke2 Nb6 43.Qe4 Na4 44.Nb1 Qb2 45.Ke1 Re6 46.Qd3 Qg2 47.Qe2 Qe4 48.Kd2? Rd6 49.Kc1 Rd1 50.Qd1 Qb1!! 51.Kb1 Nc3 52.Kc2 Nd1 53.Kd1 f5 54.Ke2 Kf6 55.Kf2 Ke5 (55...Ke5 56.Ke2 Ke4–+) 0–1. Gierth,Karlheinz (2190) – Mamonov,Petr (2150), CP–2009–P–00066, 2009.

7.b5 Bg4 8.Be2 Be2 9.Ne2 e6 =.

7.c4 e6 8.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4).

7.c4 Bf5 8.Nf3 e6 9.Qb3 Be7 10.Be2 (10.Bf6!? Bf6 11.d4=) 10...dc4–/+ 11.Bc4 Nbd7 (11...b5 12.Bf6 gf6 13.Be2–/+) 12.0–0+= 0–0 13.Nc3 Nb6 14.Rd1 (14.Be2 Bd3+=) 14...Nc4 15.Qc4 Bd3 16.Qb3 Qd6 17.Ne1 Bf5 18.Na2 e5 19.h3 Ra8 20.Nf3?? (better is 20.Qb2–+) 20...Be6 21.Be5 (21.Qc3 Ra2 22.Qe5 Qe5 23.Be5–+) 21...Bb3 (21...Ra2?! 22.Qa2 Ba2 23.Bd6 Bd6 24.Ra1+=) 22.Bd6 Bd6 (22...Bd6 23.Re1 Ra2–+) 0–1. editor (1705) – nordlicht (2145), gameknot.com, 2006.

7.Nf3 Bg4 (8.h3 Bf3 9.Qf3 Nbd7=). ludger – jpettit (2240), net–chess.com, 2005.

7.f4 Bf5 8.Nf3 e6 9.b5 Bc5 10.Bd3 Bg4 11.0–0 0–0 12.Qe1 Nbd7 13.Qg3 Qa8 14.Bc3 Bf3= 15.Rf3 Qa2 16.Rf1 Qa7 17.Qf2 Qb6 18.Qe2 Ra8=+ 19.Be5 g6 20.Kh1 Ne5–/+ 21.fe5 Nd7 22.Qf2 Rf8 23.Be2 Be7 24.d4 cb5 25.Nd2 Qc6 26.Bd3 f5 27.g4 (27.Qe2 Nb6=+) ½–½. Woelfelschneider,Peter – Bonetti,Shane, TT–13 ETC, 2004.

6.Nf3 Nf6

7.Bd4 =.

7.e3 Qd6?? 8.Be5+– Qb4 9.Bb8 Bg4 10.Be2 Nd7 11.Bg3 f6 12.0–0 g5 13.d4 Qb6 14.Nbd2 h5 15.h4 Bh6 16.Qb1 Qa7 17.Qa1 Qa1 18.Ra1 Kf7 19.Kf1 Bf5 20.c4 g4 21.Ne1 e5 22.de5 fe5 23.Bd3 Be6 24.cd5 cd5 25.Bb5 Kf6 26.Nd3 Kf5 27.Bd7 Bd7 28.Be5 Re8 29.Bd4 g3 30.Rb1 b5 31.Nc5 Bc6 32.Ra1 b4 33.Ra7 Bb5 34.Ke1 gf2 35.Kf2 Kg4 36.Rb7 Rf8 37.Nf3 Bc4 38.Rh7 (38…Be3 39.Ke3 Re8 40.Be5+–; < 38.Rb4 Rf7+–) 1–0. Schieferstein,Michael – Steinberg,Walter, Bad Zwesten op 1st, 1997.

7.e3 Bf5 8.Be2 e6 9.c3 Bd6 10.0–0 Nbd7 11.Nd4 Bg6 12.Na3 e5 13.Nb3 e4 14.Nd4 Qc7 15.Qa4? (better is 15.h4!? h6 16.h5+=) 15...Bh2–+ 16.Kh1 Be5 17.Qa5 Qa5 18.ba5 Bd6 19.a6? (better is 19.Nac2–+) 19...Ba3 20.ab7 Kd8 21.Nc6 Kc7 22.b8Q Nb8 23.Nb8 Rb8 24.c4 dc4 25.Bc4 Bb2 26.Bb2 Rb2 27.Rc1 Kd6 28.Kh2 Rd2 29.Bb5 Ng4 30.Kg3 Nf2 31.Rc6 Ke5 32.Rc8 Nd3 33.Re8 Kf6 34.Rd8 Re2 35.Rd6 Ke5 36.Rd8 Re3 37.Kh2 Re2 38.Bd3 ed3 39.Kg1 Kf4 40.Rd4 Kg3 41.Rd7 Re1# 0–1. Neumann,Frank (1650) – Rosner,Dirk (2175), RSLE–2009, 2009.

7.e3 Bg4 =.

7.Bf6 ef6 8.c3 Bd6 9.e3 0–0 10.Qc2 f5 11.Bd3 g6 12.0–0 f4 13.e4 de4 14.Be4 Nd7 15.d4 Nf6 16.Nbd2 Ne4 17.Ne4 Bf5 18.Re1 Kg7 19.Qd2 Re8 20.Nd6 Re1 21.Qe1 Qd6 22.Qe5 Qe5 23.Ne5 f6 24.Nc4 b5 25.Na5 Be4 26.Nb7 Bd5 27.g3 fg3 28.fg3 Kf7 29.Nc5 h5 30.Kf2 Ke7 31.Ke3 Kd6 ½–½. nordlicht (1960) – cecherino (1875), gameknot.com, 2013.

5.Ba1 e6

6.b5 cb5 7.Nc3 b4 8.Nb5 d5 9.e3 Bd7 10.Nd6+= Ke7 11.Nb5 Nf6 12.Nh3 Qb6 13.Nd4 Nc6 14.Nf4 g6 15.Nd3 Bg7 16.Nc6 Bc6 17.Bd4+= Qc7 18.Qa1 Rg8 19.Qb2 b6 20.Qb4+/– Kd7?? 21.Ne5+– Ke8 22.Nc6 Qc6 23.Bb5 (23...Qb5 24.Qb5 Nd7 25.Bb6+–; 23.Qb6?! Qb6 (23...Qc2?? 24.Qb8 Ke7 25.Bf6 Bf6 26.Qg8+–) 24.Bb6 Nd7+/–) 1–0. Korchut,Adam (2035) – Damasio,Fabio, IECG, 2004.

6.c4 Bb4?? 7.Bg7 d5 8.cd5 +–.

6.c4 Nf6 7.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4).

6.c4 Nf6=+ 7.c5 Na6 8.Qb3 Nd5 9.Bc3 Nc3 10.Nc3 Qh4 11.e4= d6 12.Nf3 Qg4 13.h3 Qg6 14.Ba6 Qg2–/+ 15.Rg1 Qf3 16.Be2 Qh3 17.d4 dc5 18.bc5 g6 19.Rg3 Qh1–+ 20.Bf1 Bg7 21.e5 Qh4 22.Qd1 f5 23.Rh3 Qd8 24.Bg2 Qa5 25.Kf1 Qa6 26.Kg1 0–0 27.Na4=+ Bd7 28.Nb6 Rd8 29.Qb3 Qa1–/+ 30.Bf1 Kf7 31.Qc4 h5 32.Rc3 Be8 33.Rd3 Bh6 34.Kg2 Qe1 35.Qa4 Qe4 36.Kg1 Qh4 37.Bg2 Qe7 38.Nc4=+ g5 39.Nd6= Kg6 40.Rb3 Attacking the backward pawn on b7 40...b5 41.cb6+– Rb8? 42.b7 Bf8 43.Bc6 Bc6 44.Qc6+– Qd8 45.Ra3 Bd6 46.ed6 (46...Qh8 47.Ra8 Qd4 48.Rb8 Qg4 49.Qg2 Qd1 50.Kh2 Qd6 51.Qg3 Qg3 52.fg3+–) 1–0. Petersen,Jan – Jonson,Ernst, corr Nordisk Cup, 1993.

6.c4 Nf6 7.c5 b6 8.Qb3 bc5 9.bc5 Na6 10.d4 Ne4 11.Nc3 Qa5 12.Bb2 Be7 13.f3 Nc3 14.Bc3 Qc7 15.e4 0–0 16.Bd3 e5 17.Qb6 (worse is 17.de5 Nc5 (worse is 17...Bc5 18.Ne2=) 18.Qc2 d6 19.ed6 Bd6+=) 17...ed4 18.Bd4 (worse is 18.Ba6 Qb6 19.cb6 dc3 20.Bc8 Rc8–/+) 18...Qb7 19.Ne2 Qb6 (better is 19...Nb4!? 20.Bb1 d6=) 20.cb6+/– Bb7 21.Kd2 Ra8 22.Ra1 Kf8 23.Bc4 f6 24.Nf4 Ke8 25.Ke2 Bf8 26.Nh5 Kd8 27.e5 fe5 28.Be5 Bc5 29.Bg7 Bb6 30.Rb1 Kc7 31.Be5 d6 32.Bd6! Kd6 33.Rb6 Ra7 (better is 33...Nc5!?+/–) 34.Rb7!+– Rb7 35.Ba6 Ra7 36.Bc4 Ra4 37.Kd3 Kc5 38.Bf7 Rh4 39.h3 Kb4 40.f4 c5 41.Nf6 Rh6 42.Nd5 Kb5 43.Be8 Ka5 44.Kc4 Re6 45.Bh5 Re2 (45...Re1 46.Kc5 Rc1 47.Kd6 Rf1+–) 46.Be2 1–0. Pcmvr – DanielS, playchess.de, 2005.

6.e3 Nf6 7.c3 d5 8.Nf3 Bd6 9.Be2 0–0 10.–0 Re8 11.d3 e5 12.h3 Nbd7 13.Nbd2 Nf8 14.Nb3 Bc7 15.Qc2 Qd6 16.Nbd2 e4 17.de4 de4 18.Ne4? (better is 18.Nc4 Qd5 19.Nd4–/+) 18...Ne4–+ (18...Re4?! 19.Rd1 Qe7 20.Bd3–/+) 19.Bd3 (19.Rd1 Qg6 20.h4–+) 19...Ng5! 20.Rd1 (20.Ng5 Qh2 Mate attack) 20...Nf3 21.gf3 (21.Kf1 Qh2 22.Be4–+) 21...Qh2 22.Kf1 Bh3 (22...Re3! 23.Bh7 Kh8 24.fe3 Bh3 25.Qg2 Qg2 26.Ke1 Bg3) 23.Ke2–+ Bg3 (23...Bg3 24.Kd2 Qf2 25.Kc1 Qe3 26.Kb1 Qf3–+) 0–1. Hal1958 – Patkov, playchess.de, 2005.

6.e4 Bb4?? 7.Bg7+– Nf6 8.Bh8 Ne4 9.Qg4 Nf6 (9...d5 10.f3 Kd7+–) 10.Qb4 (10.Qb4 d5 11.Bd3+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.e4 d5 7.ed5 cd5 8.Nf3 =.

6.e4 Nf6 7.e5 Nd5 8.b5 Bc5 9.Nf3 Qb6 10.d4 Bb4 11.c3 Qa5 12.cb4 Qa1 13.Bd3 0–0 14.0–0+= Qb2? 15.Bh7+– Kh7 16.Ng5 Kg8 17.Qd3 f5?? 18.Qh3 (18...Nf6 19.ef6 Rf6 20.Qh7 Kf8 21.Qh8 Ke7 22.Qg7 Ke8 23.Qf6 Qb4 24.Qf7 Kd8 25.b6+–) 1–0. pierre (2075) – Garfield85 (1925), internet, 2006.

6.Nf3 Nf6 =.

6.g3 d5 7.Bg2 Bb4 8.Bg7 1–0. onny555 (1905) – rcm06 (2170), gameknot.com, 2014.

5.Ba1 Nf6

6.c3 e5 7.e3 d6 8.Nf3 Be7 9.d4 0–0 (better is 9...e4!? 10.Nfd2 0–0+=) 10.de5+= de5 11.Be2 (better is 11.Qd8!? Rd8 12.Ne5+=) 11...e4 12.Nd4 Nbd7 13.Nc2 (13.Nd2 c5 14.Nf5 cb4+=) 13...Ne5 14.Qd8 Rd8 15.0–0 Be6 16.Rd1 b5 17.Rd8 Bd8 18.Nd4 Bd5 19.Nd2 h5 20.Bf1 Nfg4 (20...Bc7 21.Be2–/+) 21.h3 (21.Nf5!?=) 21...Nf6+= 22.g3 Nfd7 23.Bg2= c5 24.bc5 Nc5 25.Be4?? Be4 26.Ne4 Ne4 27.Bb2? Be7 28.Nb5 Bc5 29.Nc7 Nd3 30.Ba1 Nef2 31.Nd5 Ne4 32.Kg2 Ne1 33.Kf1 Nc2 34.Ke2 Na1 35.Kd3 Ng3 0–1. Fournier,Frederic – Bleda, Partie amicale, 0m + 1s, 2008.

6.c4 d5=+ 7.e3 dc4 8.Bc4 b5 9.Be2 =+.

6.c4 d5 7.e3 e6 8.Qb3 Bd6 9.Nf3 0–0 10.Be5 Na6 11.c5 Be5 12.Ne5 Nd7 13.Nd7 Bd7 14.d4 Nc7 15.Nc3 Qg5 16.g3 e5 17.de5 Qe5 18.Bg2 d4 19.Nd1 Be6 20.Qb2 Nb5 21.f4 Qh5 22.0–0 Ra8 23.Bf3 Qg6 24.ed4 Ra2 25.Qc1 Nd4 26.Nc3 Qd3–+ 27.Na2 Nf3 28.Kg2? Qe2 29.Rf2–/+ Bh3! 30.Kh3 Qf2 31.Qd1 Qh2 32.Kg4 Nd2 33.Nc1 g6 34.Kg5 Ne4 35.Kg4 Qh5# (35...Qg3#) 0–1. bentengutama (1955) – steamer (2650), net–chess.com, 2003.

6.c4 d5 7.e3 Bf5 8.Nc3 e6 9.b5 Bc5 10.Nf3 Nbd7 11.Na4 Ba7 12.Be2 0–0 13.Nd4 Qc7 14.bc6 bc6 15.cd5 cd5 16.Nb5 (16...Qb8 17.0–0=; 16.Nf5!? ef5 17.Nc3=). algernon (2290) – lucperetti (1985), net–chess.com, 2005.

6.c4 d5=+ 7.e3 Bf5 8.Nf3 e6 9.Qb3 Na6 10.c5= b6?? 11.Ba6+– Qa8 12.Bf6 gf6 13.Be2 bc5 14.bc5 Bc5 15.d4 Qa5 16.Nbd2 Bb4 17.0–0 0–0 18.Rd1 Kh8 19.Bd3 Bg4 20.Qc2 Rg8 21.Kh1 e5 22.Bh7 Rg7 23.Bd3 e4 24.Ne4 de4 25.Be4 Qh5 26.Qc6 f5 27.Bd5 Kh7 28.Rb1 Be7 29.Rb8 Bf3 30.Bf3 Qh4 31.Qc8 Kg6 32.Rb6 f6 33.g3 Qh3 The mate threat is Qf1 34.Bg2 Qg4 Threatening mate: Qd1 35.f3 Qg5 36.Rb3 Rh7 37.Qg8 Rg7 38.Qd5 Rh7 39.Kg1 Qh6 40.h4 Qf8 41.Rb5 Qc8 42.e4 Rh5 43.ef5 Rf5 44.Qf5 Qf5 45.Rf5 Kf5 46.Bh3 (46...Kg6 47.Be6+–; 46.Kf2 Bb4+–) 1–0. Annegarn,Alexander – Krug,Kevin (1645), NRW–ch U14 Winterberg, 2002.

6.c4 e6 7.Qb3 Be7 8.b5 d5 9.e3 0–0=+ 10.Nf3 Nbd7 11.Nc3 Nc5 12.Qb2 dc4 13.Bc4 Nd3=+ 14.Bd3 Qd3 15.Ne5 Qf5 16.Ne2 cb5 17.Ng3= Qg5 18.h4 Qh6 19.Qb5 Nd5 20.h5 f6=+ 21.Nf3 g6 22.Ke2 Bd6 23.Ne4 Bb8 24.g4 g5= 25.Nd4 Qg7 26.f3 Qf7 27.Bb2 Qe7 28.Qb3 b6 29.Ba3+/– Ba6? 30.Kf2 Qc7 31.Bf8 Kf8 32.Ne6 (32...Ke7 33.Nc7 Bc7 34.Qd5+–) 1–0. Michalek,Martin – Kessler,Meinrad, TT–10 ETC, 2004.

6.c4 e6 7.c5 b6 8.d4 Nd5 9.Qb3 d6 10.Nf3 Be7 11.e3 0–0 12.Nc3 Ba6 13.Ba6 Na6 14.Nd5 ed5 15.0–0 b5 16.Bc3 Qd7 17.Ra1 Ra8 18.h3 Ra7 19.Qb1 Nb8 20.Ra2 h6 21.Qa1 Ra2 22.Qa2 Qb7 23.Nd2 Qa6 24.Qa6 Na6 25.e4 Nc7 26.f4 dc5 27.dc5 (worse is 27.bc5 de4 28.Ne4 Nd5+=) 27...g5 28.f5 f6 29.e5 fe5 30.Be5 Na6 31.Bc3 Kf7 32.Nb3 Bd8 33.g4 Bf6 34.Be1 Ke7 35.Kf2 Kd7 36.Ke3 Kc7 37.Nd4 Kd7 38.Nf3 Bb2 39.Nd4 Nb8 ½–½. Hal1958 – Tycho, playchess.de, 2004.

6.e3 b5 7.Bf6 ef6 8.c3 d5 9.d4 Bd6 10.Bd3 0–0 11.Nf3 Bg4 12.Nbd2 Nd7 13.Qc2 g6 14.h3 Bf3 15.gf3 (15.Nf3 Re8+=) 15...Qe7 16.h4 Ra8 17.Nb3 Nf8 (17...f5 18.h5=+) 18.h5= f5 19.Rg1 (19.hg6 fg6 20.e4 Ra3=+) 19...Kh8 20.hg6 ½–½. Myslowski – Garet,Jacques, Paris op–B, 1996.

6.e3 Qb6 7.Bf6 ef6 8.c3 d5 9.Qa4 Bf5 10.Nf3?? (better is 10.d3=) 10...Bb1–+ 11.d3 Qa6 12.Qa6 Na6 13.Nd2 (better is 13.Kd2 Ba2 14.Kc2–+) 13...Bc2 14.Be2 c5 15.b5 Nc7 16.c4 dc4 17.dc4 b6 18.0–0 Bd6 19.Ra1 Ke7 20.e4 (20.Ra2 Bf5 21.Ra7–+) 20...Rd8 21.Kf1 (21.Ra2 Bh2! 22.Kh2 Rd2 23.Bh5–+) 21...Be5 22.Ra2 Rd2 23.f3 Ne6 0–1. Bopeep – PeterRs, ChessWorld.net, 2012.

6.e3 Qb6 7.Bf6 ef6 8.c3 d5 9.Nf3 g6 10.Be2 Bg7 (10...Bd6 11.Nd4=) 11.0–0 (11.d4 0–0+=) 11...0–0 12.d4 Na6 13.Nbd2 Nc7 (13...Bf5 14.Qb3+=) 14.Qb3 Bd7 (14...Be6 15.Ra1+=) 15.c4 (15.Ra1 Ra8 16.Ra8 Na8+/–) 15...Be6 (15...Ra8 16.Rc1+=) 16.Ra1+/– dc4 (16...Na6 17.Ra4+/–) 17.Nc4 Qb5 (17...Bc4 18.Bc4 Nb5 19.Ra4+/–) 18.Ra5 Bc4 19.Bc4 (19.Rb5 Bb3 20.Rb7 Rc8–+; 19.Qc4?! Qc4 20.Bc4 Ra8+/–) 19...Qb6 20.h4 (20.Nd2 Ne8+/–) 20...Ne8 21.h5 Nd6 22.Bd3 (better is 22.hg6 hg6 23.Bd3+=) 22...Re8? (better is 22...f5!?+/–) 23.hg6+– hg6 24.Bg6 Kf8 25.Nh4 Qc7 26.Bd3 Ke7 27.Rc5 Rh8 28.g3 Qd7 29.Nf5 Nf5 30.Bf5 Qc7 31.b5 Ra8 32.bc6 Ra1 33.Kh2 bc6 34.Qc4 Qb8 35.Rc6 Qh8 36.Bh3 Qh5 37.Qb4 Kd8 38.Rc8# 1–0. marekt – kehrsam, ChessWorld.net, 2007.

6.e3 d5 7.c4 g6 8.Nf3= Bg7 9.Be2 0–0 10.0–0 Nbd7 11.cd5+= Nd5 12.Bg7 Kg7 13.b5 c5 14.Nc3 Nc3 15.dc3 Nf6 16.Qa4 Qc7 17.Rd1 Rd8 18.Rd8 Qd8 19.h3 h6 20.Qa8 Nd5 21.c4 Nb6 22.Qa3 Qd6 23.Qa5 Be6 24.Nd2 Nd7 25.f4 Nf6 26.Qc3 Kg8 27.Bf3 b6 28.Kf2 g5 29.fg5= hg5 30.Ke2 Qg3 Black prepares g4 31.Qd3+= g4 32.hg4 Bg4 33.Kf1 Bf3 34.gf3 Qh3 35.Ke2 Qd7 ½–½. Buczinski,Henryk – Zarychta,Krzysztof, corr Poland–chT3, 2002.

6.e3 d6 =.

6.e3 e6 7.b5 d5 8.Nf3 Bd6 9.c4 0–0 10.Be2 Nbd7 11.0–0 e5 12.bc6 bc6 13.Qa4 c5 14.cd5 Nd5 15.Qc6+/– N7f6 16.Be5 Be5 17.Ne5 Qe7 18.Nd3+– Bf5 19.Qc5 Qc5 20.Nc5 Rc8 21.d4 Ne4 22.Rc1 Nc5 23.dc5 Kf8 24.Nd2 Bg6 25.Nf3 f6 26.Nd4 Ke7 27.Bg4 Rc7 28.c6 h5 29.Bf3 Nb4 30.Nb5 Rc8 31.c7 Nd3 32.Rc3 Be8 33.Na7 (33...Rc7 34.Rc7 (34.Rd3?! Ra7 35.h4 g5+/–) 34...Kf8 35.Be2+–; 33.Rd3?! Bb5 34.Rc3 Kd6 35.Bh5 Rc7 36.Rc7 Kc7+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.Nf3 d6 7.c4 Qb6 8.Bc3 Ne4 9.Qc2? (9.e3!?=) 9...Bf5 10.e3? (10.Nd4 Nf2! 11.Qf5 Nh1 12.Qc8 Qd8 13.Qb7=) 10...e6?? (Better is 10...Ng3! 11.e4 Nh1–+) 11.d3 Nc3 12.Qc3 d5 13.c5 Qa6 14.Be2 Nd7 15.0–0 Nf6 16.Re1 Be7 17.d4 Qa2 18.Nbd2 0–0 19.Ra1 Qc2 20.Qc2 Bc2 21.Bd1 Bd1= 22.Rd1 Ra8 23.Rb1 Nd7 24.Ne1 f6 25.Nc2 e5 26.Kf1 Kf7 27.Ke2 f5 28.Ra1 Ra1 29.Na1 ed4 30.ed4 Bf6 31.Ndb3 b6 32.Nc2 Ke6 33.f4 h6 34.g3 g5 35.Ke3 g4 36.Ne1 h5 37.Nd3 h4 38.Ne5 Ne5? 39.de5+– Bd8 40.Kd4 hg3 41.hg3 b5? 42.Na5 Bh4?? 43.gh4 g3 44.Ke3 d4 45.Kf3 d3 46.Nb3 Kd5 47.Kg3 Kc4 48.Nd2 Kc3 49.Nf1 Kb4 50.h5 Kc5 51.h6 b4 52.h7 b3 53.h8Q (53...b2 54.Qb8+–) 1–0. ZeitNot2002 (1720) – MikhailTellTal (1995), Dos Hermanas Internet Section, 2003.

6.Nf3 e6 7.b5 cb5 8.e3 b4 9.Bd3 d5 10.0–0 Nc6 11.Ne5 Be7 12.Bb5 Qc7 13.f4 0–0 14.Bb2 Ne4 15.Qg4 f6 16.Nf3 (not finished). LeftHook – crafty, ICC, 1996.

6.Nf3 e6 7.b5 d5 8.bc6 Nc6 9.e3 Bd6 (10.Nc3 e5=) =. p_f – MickeyBitsko, ChessWorld.net, 2002.

6.Bf6 ef6=+ 7.c3 d5 8.e3 b6 9.Be2 Bd6 10.Nf3 0–0 11.0–0 Qd7 12.Bd3 Ba6 13.Qc2 Bd3 14.Qd3 Rd8 15.Na3 c5 16.bc5 bc5 17.c4 d4 18.ed4 cd4 19.Re1 Nc6 20.Nb5 Bb4 21.Qe4 d3 22.Qf4 Rc8 23.h3 Na5 24.Rc1 Kh8 25.Qe4 h6 26.Nbd4 Rc4 27.Rc4 Nc4 28.Qd3 Ne5 29.Qe2 Qd5 30.d3 Bc5 31.Qe4 Qa2 32.Ne5 fe5 33.Ne2 Qa5 34.Kh2 Bf2 35.Qf5 Bc5 36.Qf7= Qe1 37.Qf3 Bd6 38.Qe4 Bc7 39.h4 g6 40.Kh3 Qh1 41.Kg4 Kg7 42.Qb7+– h5 43.Kf3 Qf1 44.Ke3 Qf7 45.g3 Bd8 46.Qc6 g5 47.hg5 Qf5 48.Qb7 Kg6 49.Nc3 Qg5 50.Kf3 Qg4 51.Kg2 Bf6 52.Qc6 h4 53.Ne4 Qe2 54.Kg1 ½–½. Suwara,Kazimierz – Kleine,Joachim (1630), Telechess, 2003.

6.Bf6 ef6=+ 7.c3 d5 8.e3 Bd6 9.Nf3 =.

6.Bf6 ef6 7.c3 d5 8.e3 Nd7 9.Nf3 Bd6 10.g3 0–0 11.Bg2 Ne5 12.Ne5 fe5 (12...Be5?! 13.d4 Bd6 14.0–0=) 13.0–0 Be6 14.d3 Qd7 15.Nd2 c5 16.bc5 Bc5 17.d4 Bd6 18.Qb3 e4 19.Rb1 Rb8 20.h4 Qe7 21.Bf1 Qc7 22.Qb6 (22.c4 Bg3 23.cd5 Bh2 24.Kg2 Bf5=) 22...Qb6 (better is 22...Bg3 23.Qc7 Bc7–/+) 23.Rb6= Bc7 24.Rb1 Bd7 25.c4 Be6 26.cd5 Bd5 27.Bc4 Bc4 28.Nc4 f5 29.Rb5 g6 30.Kg2 Kf7 31.f3 Ke6 (better is 31...b6!?+=) 32.fe4+– fe4 33.g4 h6 34.Kh3 Bd8 35.Re5 Kf7 36.Nd6 Kf6 (better is 36...Kg7+–) 37.Ne4 (37.Re4?! b5 38.d5 b4+/–) 37...Kf7 38.Nd6 Kf6 39.Re8 Bc7 40.Rb8 Bb8 41.Nb7 g5 42.h5 Ke6 43.Nc5 Kd5 44.Kg2 Bd6 45.Kf3 Be7 46.Nb3 Kc4 47.Nd2 Kd5 48.Ne4 Bd8 49.Ng3 Be7 50.Ke2 Kc4 51.Nf5 Bf8 52.e4 1–0. Hal1958 – Tycho, playchess.de, 2004.

6.g3 e6 7.Bf6 Qf6 8.c3 d5 9.Bg2 Bd6 10.Nf3 e5 11.0–0 0–0 12.d3 Qh6 13.Qd2 Qh5 14.Qg5 Qg5 15.Ng5 h6 16.Nf3 f5 17.Nbd2 e4 18.de4 fe4 19.Nd4 Nd7 20.Bh3 Ne5 21.Bc8 Rc8 22.Rb1 b6 23.b5 c5 24.Ne6 (better is 24.Nf5 Rd8 25.Ra1=) 24...g5–+ 25.f4 ef3! 26.ef3 (26.Nf3 Nf3 Double attack; 26.ef3 Kf7 Combination) 26...Kf7 27.f4 Ke6 28.fe5 Be5 29.Re1 Kd6 30.Nb1 d4 31.c4 Ra8 32.Rc1 Ra2 33.Rd1 Rc2 34.Nd2 g4 35.Kf2 Bf6 36.Ke1 (36.Kg1 Ke6 37.Re1 Kd7–+) 36...Ke5 37.Ra1 Bg5 38.Rd1 (38.Nf1–+) 38...Rd2 39.Rd2 Bd2 40.Kd2 Ke4 41.Ke2 d3 42.Kd2 Kd4 (42...Kd4 43.Kd1 Ke3 44.h3 gh3 45.Kc1 d2 46.Kb2 h2 47.Ka2 d1Q 48.Kb2 Qd3 49.g4 h1Q 50.g5 Qhb1) 0–1. Knightprancer – Goofy (2000), playchess.de, 2006.

4.c4 ba3

5.Na3 d5 6.Nf3 Nf6 7.e3 e6 8.Qb3 Nbd7 9.Be2 dc4 10.Nc4 Ra1 11.Ba1 Be7 12.0–0 0–0 13.d4 Qc7 14.Rc1 Nd5 15.e4 (15.Bd3 Rd8=+) 15...Qf4 (15...Nf4 16.Bf1=+) 16.Qb1=+ N5f6 (16...N5b6 17.Nce5=+) 17.e5 (17.Bd3 Rd8=+) 17...Ng4 (17...Nd5!?=+) 18.Bc3= Qf5 (18...b5!? 19.Bd2 Qf5 20.Qf5 ef5=) 19.Bd3+= Qh5 20.h3 Nh6 21.Bh7 Kh8 22.Bd3 f5 23.Nb6 Nb6+/– 24.Qb6 g5 25.Bb4 Bd8 26.Qc5 Rg8 27.Be2 g4 28.Nh2 Qg5= 29.Rc3 gh3 30.Rg3 Qh4 (31.Nf3 h2 32.Kh1 Qe4 33.Rg8 Ng8+/–). de Visser,Arno – Diener,Rudolf, 1981.

5.Na3 e6 6.Nc2 Ra1 7.Qa1 Nf6 8.Bf6 Qf6 9.Qf6 gf6 10.Nf3 Na6 11.e4 Nc5 12.d3 d6 13.Be2 e5 14.h3 f5 15.0–0 fe4 16.de4 Be6 17.Ne3 Bh6 18.Kh2 Kd7 19.Rb1 0–1. Haesslein – Gallinnis, corr 1982.

4.c4 bc3–/+

5.Nc3 Nf6 6.e4 e5 7.Nf3 Qb6 8.Ne5 Bc5 9.f3 =+.

5.Nc3 Nf6 6.e4 e5 7.Nf3 d6 8.d4 Bg4 9.de5 Bf3 10.Qf3 de5 11.Bc4 Bc5 12.0–0 Nbd7 13.Rfd1 Qc7 14.Ne2 Rd8 (14...b5 15.Bb3=+) 15.Ng3 0–0 (16.Nf5 b5=+) =+. de Visser,Arno – Poschmann,Hans, corr ICCF–T/19–F, 1981.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.Bc4 b5 9.Be2 =+.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.Bc4 h6 9.0–0 (9.d4 ed4 10.Nd4 b5=+) 9...0–0 (Better is 9...Bc7=) 10.Nh4? (10.d4 Qb6 11.Bc1 ed4 12.Nd4=+ (12.Qd4? Qd4 13.Nd4 Be5–+)) 10...b5 (10...Bc5 11.Qf3–/+) 11.Ba2 (11.Bb3 Bc7 12.Nf3 d5 13.ed5 e4–/+) 11...Bc7 12.g3 (12.Re1 d6–/+) 12...d6 13.d4 Bh3 14.Re1 ed4 15.Qd4 Bb6 16.Qd3 Ng4 17.Nd1 (17.Re2 Ne5 18.Qc2 g5–+) 17...Re8 18.Ng6 Nf6 19.Nf4–/+ Bf5 20.Nc3 Bh7 21.Rad1 d5! 22.Nfd5 cd5 23.Nd5 Ng4 24.Qb5? Bf2–+ 25.Kf1 Nd7?? 26.Nc7 Re7 27.Na8 Be1 28.Re1 Qa8 29.Bd5 Qa7 30.Qe2 Ndf6 31.Bf6 Nf6 32.Qf3 Nd5 33.ed5 Re1 34.Ke1 Qg1 35.Ke2 Qh2 36.Ke3 Qg1 37.Ke2 Bc2 38.Kd2 Ba4 39.Qg4?! Qf2 40.Kc3 Qc5 41.Kb2 Qc2 0–1. de Visser,Arno – Diener,Rudolf, corr ICCF T–19–F, 1979.

5.Nc3 Nf6 6.e4 e5 7.Nf3 Bd6 8.d4 ed4 9.Qd4 Qe7 –/+.

5.Nc3 d5

6.e3. Grund.

6.e4 d4 7.Nb1 e5 8.Bc4 Nf6 9.Nf3 Bd6 (9...Ne4 10.Ne5 Nd6 11.Bd3–+) 10.Ng5 0–0 11.d3 Qe7 12.Qb3 (12.0–0 b5 13.Bb3 h6–+) 12...b5 13.Bf7 Rf7 14.0–0 h6 15.Nf7 Qf7 16.Qf7 Kf7 17.Nd2 c5 18.Rac1 Be7 (18...Nc6 19.Rc2–+) 19.Rc2 Ra4 20.f4 Nc6 21.f5? (21.Nb3 Nd7–+) 21...Bd7 (21...Ba6!? 22.Nb1–+) 22.Rf3 (22.Rfc1–+) 22...Na5 (23.Rf1 c4–+) 0–1. Poschmann,Hans – Grund,Karl, corr, 1981

6.e4 d4 7.Nce2 e5 8.Nf3 Bd6 9.g3 Bg4 10.Bg2 c5 11.d3 Nc6 12.h3 Be6 13.0–0 Na5 14.Nd2 c4 15.dc4 Bc4 (15...Nc4 16.Nc4 Bc4 17.Rb1–+) 16.Nc4 (16.Bc1 Nf6–/+) 16...Nc4 17.Bd4 Ne7?? 18.Bc3= 0–0 19.Bb4 Bb4=+ 20.ab4 Qb6 21.Nc3 Ra1 22.Qa1=+ Qb4 23.Rb1 Qa5 24.Qa5 Na5 25.Rb5 Nec6 26.Na4 Rb8 27.Nc5 f6 28.f4 Kf7 29.fe5 fe5 30.h4 b6 31.Nd7= Rb7 32.Nb6 ½–½. de Visser,Arno – Schuehler,Ernst, corr ICCF, 1981.

6.e4 de4 7.Ne4 Bf5 8.Qf3 Bg6 9.Bc4 e6 10.Ne2 Be4 (11.Qe4 Nf6–/+) –/+. de Visser,Arno – Grund,Karl, corr, 1981.

6.Nf3 d4 7.Ne4. Schuehler.

6.Nf3 Nf6 7.e3 Bg4 8.Be2 Nbd7 9.d4 e6 (9...Bf3 10.Bf3 e5!? 11.de5 Ne5 12.Be2 Nc4) 10.Qb3?! (10.Ne5 Bf5; 10.0–0 Bd6) 10...Bf3! 11.Bf3 Qc7 (11...Qb8!) 12.0–0 Bd6 13.g3 0–0 14.Rfc1 Qb8 (14...Qa5! 15.Qb7? (15.a4!) 15...Rfb8! 16.Qc6 Ra6) 15.a4! Rc8 16.Rc2 (16.Ba3 Bc7 17.Rab1 Ra7) 16...c5! 0–1. Poschmann – Schuehler, corr ICCF 1981.

6.Nf3 Nf6 7.e3 g6 8.Be2 Bg7 9.0–0 Nbd7 10.Qc2 0–0 11.Rfc1 e5 12.d3. Woelfelschneider – Rokitta, corr ICCF 2–2866 1993.

4.e3 ba3

5.Ra3 Ra3 6.Ba3 Nf6 7.Nf3 g6 8.Bd3 Bg7 9.c3 0–0 10.h3 Re8 11.0–0 d5 12.c4 e5 13.Be2 dc4–+ 14.Bc4 b5 15.Qb3 bc4 16.Qb8 Ne4 17.Qb4 Be6 18.Rd1 Qd5 19.Qb7 c3! 20.Rc1? cd2 21.Nbd2 Nd2 22.Nd2 Qd2 23.Qc6 The mate threat is Qxe8 23...Rd8 24.Be7 Rb8 25.Ra1 h6 26.Ra8 Ra8 27.Qa8 Kh7 28.Bh4 Bd5 29.Qd8 Qd3 30.Qb6 Qe4 31.f3 Qh4 32.e4 Be6 33.Qb7 Qe1 34.Kh2 h5 35.Qe7 Bh6 (36.Qh4 Qh4 37.g4 Bf4 38.Kh1 Qh3 39.Kg1 Be3#) 0–1. Dolezalova,M – Nava,E (2210), OCC–2002–05, 2002.

5.Ba3 Ra5 6.d4 e6 7.Nf3 Nf6 8.Bd3 d5 9.0–0=+ Nbd7 10.Qe1 c5 11.dc5 Nc5–/+ 12.Nd4 Nd3 13.cd3 Ba3 14.Na3 0–0 15.Qb4 e5 16.Nf3 Re8 17.d4 ed4 18.Nd4 Ne4 19.Nab5 Ra1 20.Ra1 Qb6 21.f3 Nc5 22.Rc1 Nd3 23.Qe7 Threatening mate... how? 23...Rf8 24.Rc7 Qa5 25.h3 Qa1 26.Kh2+= Nf2 27.Rc2 Qh1=+ 28.Kg3 Nh3 29.gh3+= Qh3 30.Kf2 Bf5 31.Rc3 Qh2 32.Ke1 Qg1 33.Kd2 Qf2 34.Ne2 Qf3 35.Nbd4 Qf2 36.Nf5 Qf5 37.Qb7 Re8 38.Rd3+/– Attacking the isolated pawn on d5 38...Rd8 39.Rd4 h6 40.Nf4 Rc8 41.Qb3 Qg5 42.Rd5 Qg1 43.Ne2 Qf2 44.e4 Ra8 45.Rd3 Ra1 46.Rg3 Qe1 47.Ke3 Qa5 48.Qf7?? Kf7–+ (49.Rf3 Ke6 50.Nf4 Ke7 51.Ng6 Kd8 52.Rf8 Kd7 53.Rf7 Ke6 54.Re7 Kf6 55.Re6 Ke6 56.Nf4 Kd6–+) 0–1. Benassi,Aspasio – Kagel,Fred, SES, 2001.

5.Ba3 d6 6.Nf3 =+.

5.Na3 d5 =+.

4.Nf3 ba3–/+

5.Ba3 d6 –/+.

5.Na3 d5 6.c4 Nf6 7.e3 e6 8.Qb3 Nbd7 9.Be2 dc4 10.Nc4 Ra1 11.Ba1 Be7 12.0–0 0–0 13.d4 Qc7 14.Rc1 Nd5 15.Bb2 N7b6 16.Bd3 Nc4 17.Bc4 Rd8 18.Ba3 Ba3 19.Qa3 b6 20.Ne5 Bb7–/+ 21.Nd3 Ra8 22.Qb2 Ra7 23.e4 Nf6 24.e5 Nd5 25.Bd5 ed5 26.Qc3 Ra4 27.Nb2 Ra5 28.Nd3 Qe7 29.Nc5 Rb5 30.Nb7 Qb7 31.Qd3 Qa8 32.f4 Ra5 33.Qb1 b5 34.f5 Ra4 35.Qb2 Qa7 36.Rd1 Ra2 37.Qc3 Qa4 Threatening mate... how? 38.Rc1 h6 39.e6 fe6 40.Qe3 e5 41.Qe5=+ Kh7 42.f6 Plans Qf5 42...Qa7 43.Rc6 Rd2 The mate threat is Qa1 44.h3 Black now must not overlook the idea Kh2 44...Rd4 45.Kh2 Rd1 Do you see the mate threat? 46.Rc3 Rf1 47.fg7 Qg7 48.Qg7 Kg7 49.Rc5 b4–/+ 50.Rd5 b3 51.Rb5 Rb1 52.Kg3 Kg6 53.Kh4 b2 54.Rb6 Kf5 55.Rb4 Kg6+= 56.Rb3 Kf6 57.Kh5 Ke5 58.Rb4 Kd5 59.g4 Kc5= 60.Rb7 Rh1 61.Rb2+= Rh3 62.Kg6 Rh4 63.Kf5 Rh1 64.Re2 Rf1 65.Kg6 Rg1 66.Re4 Kd5 67.Rb4 Rh1 68.Rf4 Ke5 69.Ra4 Rh2 70.Rb4 Kd5 71.Kf6 Ra2 72.Rf4 Ra6 73.Kf5 Re6 74.Rf1 Re5 75.Kf6 Re4 76.Rd1 Kc5 77.Kf5 Re8 78.Ra1 Rf8 79.Kg6 Rg8 80.Kh5 Rg5 81.Kh4 Rg6 82.Ra4 Rd6 83.Ra8 Kd5 84.Kh5 Ke5 85.Rf8 Re6 86.Rf1 Rc6 87.Rf5 Kd4 88.Rf4 Kd5 89.Rf7 Ke5 90.Rf2 Ke4 91.Rf8 Re6 92.Rf1 Rd6 93.Rf7 Re6 94.Kh4 Kd4 95.Rf1 Kd3 96.Ra1 Rb6 97.Re1 Rg6 98.Re5 Kd4 99.Rf5 Rd6 100.Rf4 Ke3 101.Rf1 Ra6 102.Kg3 Rg6 103.Re1 Kd2 104.Re5 Rf6 105.Kh4 Rf1 106.Re6 Rh1 107.Kg3 Kd3 108.Rg6 Kc4 109.Kg2 Rh4 110.Rg7 Kd5 111.Rd7 Ke5 (111...Ke6 112.Rd4=) ½–½. Fritz 8 – Fritz 6, 2005.

5.Na3 d5 6.c4 Nf6 7.e3 e6 8.Qb3 Nbd7 9.Be2 dc4 10.Nc4=+ Ra1 11.Ba1 Be7 12.0–0 0–0 13.d4 Qc7 14.Rc1 Nd5 15.Bb2 N7b6 16.Bd3 Nc4 17.Bc4 Rd8 18.Ba3 Ba3 19.Qa3 b6 20.Ne5 Bb7 21.Nd3 Ra8 22.Qb2 Nf6 23.Ne5 c5 24.Bd3 Bd5 25.Rb1 c4 26.Rc1 b5 27.Bb1 Qa5 28.f3 Qa3 29.Qd2 Qb3 30.e4 Ra1 31.Bd3 Rc1 32.Qc1 Bb7 33.Be2 Qb4 34.Kh1 c3 35.Qd1? c2! Do you see the mate threat? 36.Qc1 Qb1 Threatening mate: Qxc1 37.Nd3 b4 38.e5 b3 39.ef6 If White now would get Qf1 in, he might survive 39...Qc1 40.Nc1 b2 41.h3 bc1Q 42.Kh2 Qf4 43.Kg1 c1Q 44.Bf1 Ba6 45.g3 Qf1 46.Kh2 Qd2 0–1. Fritz 6 – Fritz 8, 2005.

5.Na3 d5 6.e3 Nd7 7.Be2 b5 8.d4 Ngf6 9.0–0 e6 10.c3 Be7 11.Qb3 Ne4 12.Nc2 Ra1 13.Ra1 Bh4 14.Rf1 0–0 15.Nb4 Bb7 16.Qc2 Be7 17.Bd3 f5 18.Ra1 Bd6 19.Kh1 Ndf6 20.h3 Qc7 21.Na6 Qd7 22.Nb4 Qc8 23.Ba3 Qe8 24.Bb2 Nd7 25.Bf1 Nb6 26.Bd3 Na4 27.Ra2 Qf7 28.Ba1 Qd7 29.Bf1 Qc7 30.Nd3 Nb6 31.Nde5 Nc4 32.Bc4 dc4 33.Ra7 Ra8 34.Ra8 Ba8 35.Qa2 Qb7 36.Kg1 c5 37.Nd7 cd4 38.ed4 Ng5 39.Nb6 Nf3 40.gf3 Qb6 41.Qa8 Kf7 42.Kf1 b4 43.cb4–/+ Bb4 44.d5 c3 45.Qc8 Qb5 46.Kg2 Qd5 47.Qc7 Kf6 48.Bc3 Bc3 49.Qc3 e5 50.h4 h6 51.Qb4 Kf7 52.Qb8 Qe6 53.h5 g5 54.Qc7 Ke8 55.Kf1 Kf8 56.Ke1 Kg8 57.Qb8 Kf7 58.Qc7 Qe7 59.Qc6 Qf6 60.Qc7 Kg8 61.Qc8 Kg7 62.Qc7 Qf7 63.Qe5 Kg8 64.Ke2 f4 65.Qb8 Kg7 66.Qb2 Qf6 67.Qb7 Kf8 68.Kf1 Qd6 69.Qe4 Kf7 70.Ke2 Qa6 71.Kd2 Qa5 72.Kd3 Qb5 73.Kd4 Qd7 74.Kc5 Kf8 75.Qe5=+ Qe7 76.Kd4 Qe5 77.Ke5= Ke7 78.Kf5 Kf7 79.Ke5 Ke7 80.Kf5 Kf7 81.Ke5 Ke7 ½–½. Fritz 5.32 – Fritz 8, 2005.

5.Na3 d5 6.e3 Nd7 7.Be2 b5 8.Nd4 b4 9.Nb1 Ra1 10.Ba1 Qc7 11.Bg4 e5–+ 12.Nf3 e4 13.Nd4–/+ Ngf6 14.Bb2 Ng4 15.Qg4 Nf6 16.Qg3 Qg3 17.hg3 Bd7 18.Kd1 c5 19.Nb3 c4 20.Nd4 Bc5 21.Rh4 Bd4 22.Bd4 b3 23.f3 ef3 24.gf3–/+ Bf5 25.Na3=+ Ke7 26.cb3 cb3 27.g4 Bd3 28.g5=+ Ne8 29.Bc5 Ke6 30.Rb4 Bc4 31.Nc4 dc4 32.Bd4 Kd5 33.d3+= cd3 34.e4 Kd6 35.Rb6 Ke7 36.Rb3 h5 37.gh6+= Rh6 38.Rd3 g5 39.Bc3 Nd6?? 40.Bb4+– Rh1 41.Ke2 Rh2 42.Ke3 Rb2 43.Bd6 Ke6 44.e5 Kf5 45.Rc3 Rb1 46.Rc7 Kg6 47.Ke4 Re1 48.Kd3 Rd1 49.Ke2 Ra1 50.Rd7 Rc1 51.Be7 Kf5 52.Bf6 Kg6 53.Ke3 Re1 54.Kd2 Rf1 55.Ke2 Rc1 56.Rb7 Rc3 57.Rd7 Rc1= ½–½. Comet B50 – Doctor? 3.0, 2005.

3.a3 b5

4.d4 e5 5.de5 ab4 0–1. Zillmer,James – Zedtler,Uwe, corr or02–019, 2002.

4.e3 d5 5.d3 Nf6 6.c4 dc4 7.dc4 Qd1 8.Kd1 ab4 9.ab4 Ra1 10.Ba1 bc4 11.Bc4 Ba6 12.Nd2 e6 13.Bc3 Nd5 14.Kc2 Nb4 15.Kb3 Nd5 16.Ne2 Bd6 17.Ne4 Be7 18.Ba6 Na6 19.g3 Nc3 20.N2c3 0–0 21.Kc4 Nc7 22.Rd1 Nd5 23.Kd3! Rb8 24.Nd5 cd5 25.Nd2 g6 26.Rb1 Rb1 27.Nb1 Bb4 28.f3 Kg7 29.Nc3 Bc3 30.Kc3 f5 31.Kd4 Kf6 32.f4 h6 33.h4 h5 34.Kc5 Ke7 35.Kc6!! Kf6 36.Kd6!! Kf7 ½–½. Trkn – oscartje, itsyourturn.com, 2000.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 =.

4.Nf3 d5

5.c3 Qd6 =.

5.c3 Bf5 6.e3 =.

5.c3 Nf6 6.e3 e6 7.Be2 Bd6 8.0–0 e5 9.a4 e4 10.Nd4 ab4 11.cb4 ba4 12.Ra4 Ra4 13.Qa4 Qb6 14.Bc3 0–0 15.Qa5 Qb7 16.d3 Qe7 17.Nd2 Bc7 18.Qa2 Bg4 19.de4 Be2 20.Ne2 Ne4 21.Ne4 Qe4 22.Rc1 Re8 23.b5 cb5 24.Bg7 Bh2 25.Kh2 Kg7 26.Ng3 Qe5 27.Rc5 Rd8 28.Rb5 Nc6 29.f4 Qe6= 30.Qb2 Kg8 31.Nh5 Qh6 32.g4 f5 33.Rb7 fg4= 34.Kg3 Rd6? 35.Kh4 d4 36.Qb3+/– Qe6 37.Qc2 Kf8 38.Qh7+/– (38...Qg6 39.Qh8 Qg8 40.Qg8 Kg8 41.ed4 Nd4 42.Kg5+/–) 1–0. Felkel,Siegfried – Zulauff,Harri, TT–18 ETC, 2005.

5.e3 ab4 6.ab4 Ra1 7.Ba1 Na6 =.

5.e3 Nd7 6.d4 =.

5.e3 e6 6.Be2 Nd7 7.0–0 Ngf6 8.c3 e5 9.a4 ba4 10.Ra4 e4 11.Nd4 c5 12.Nc6 Qc7 13.b5 c4 14.Ba3 Nc5 15.Bc5 Bc5 16.f3 Bd6 17.f4 Bd7 18.Nd4 0–0 19.Qc2 Bc5 20.Na3 Ne8 21.Qa2 Nd6 22.Rb1 Nc8–+ 23.Qb2 Nb6 24.Bd1 Bd6 25.Nc6 Bc6 26.bc6 Na4 27.Ba4 Rab8 28.Nb5 Qc6 29.Qa2 Rb6 30.Kf2 Bc5 31.Nd4 Qh6 32.Rb6 Bb6 33.h3 Bd4 34.cd4 Qb6 35.Bd7 Rd8 36.Qa4 Qb4 (37.Ke1 c3 38.Qb4 ab4 39.dc3 Rd7 40.cb4 Rb7–+) 0–1. Naunhofer – nordlicht, mySchach.de, 2004.

3.a3 d5

4.ba5 Qa5+= 5.e3 Nd7 6.Nf3 Ngf6 7.Be2 e6 8.0–0 Bd6 9.d3 0–0 10.e4 Qc7 11.Nbd2 Re8 12.Re1 (12.c4 b6+=) 12...b6 (12...e5 13.c4 d4 14.Nb3–/+) 13.Bf1 e5 14.g3 Bb7 15.d4 (15.Bg2 Nc5–/+) 15...Ne4 (better is 15...ed4!? 16.Nd4 Ne4–/+) 16.Ne4+= de4 17.Re4 c5 18.Rh4?? (18.de5 Qc6 19.e6 (worse is 19.ed6 Qe4 20.Bg2 Qd5+=; worse is 19.Qd6 Qe4 20.Bg2 Qc2 21.Qd7 Qb2–+) 19...fe6 20.Re3+=) 18...ed4 (18...cd4 19.Bb5–+) 19.Bb5 Bc6 20.Qd3 Nf6 21.Ng5 h6 22.Bc6 Qc6 (22...hg5?! 23.Ba8 gh4 24.Qf3–+) 23.Nh3? (23.Nf3 Ra5–+) 23...Ra7 (23...Nd7 24.f4–+) 24.Nf4 (24.Rf1 Nd7 25.f4 Nf6–+) 24...Rae7 25.Ng2 Re2 (better is 25...Nd7 26.Qa6–+) 26.Qf5 (26.Rf1–+) 26...R8e5 (better is 26...Ne4!? 27.Qf3 Rf2 28.Qe4 Re4 29.Kf2 Re2 30.Ke2 Qg2 31.Kd3 c4 32.Kd4 Qc2 33.Kd5 Qb2 34.Kd6 Qa1 35.Rc4 Qa3 36.Kc6–+) 27.Qd3 Qd5 (better is 27...Nh7!? 28.Rh5 Ng5 29.Rg5 hg5 30.Rf1–+) 28.Rf1 (28.Bd4 cd4 29.Rd4 Qc5–+) 28...R5e4 (28...Qa2 29.Ne3 Qb2 30.Qe2 de3 31.fe3 Qa3 32.e4–+) 29.f3 (29.Re4 Qe4 30.Qe4 Ne4–+ (worse is 30...Re4 31.Re1–+)) 29...Re8 30.Rf2 Rf2 31.Kf2 Qe6 32.Bc1 c4 33.Qd1 Bc5 34.Kf1 b5 35.Nf4 Qd6 36.Ng2 Ba3 37.Rd4–/+ Qe7 38.Ba3 Qa3 39.Rd8 Rd8 40.Qd8 Kh7 41.Qd1 Qc3 42.Qe2 b4 43.Ne3 b3 44.cb3 cb3 45.Nd1 Qc2 46.Nb2 g6?? 47.Ke1?? Qc3–+ 48.Kf2 Nd5 49.Nd1 Qd4 50.Ke1 Nc3 51.Nc3 Qc3 52.Kd1 Qa1 53.Kd2 Qa2 54.Kd1 Qe2 (54...Qe2 55.Ke2 b2–+) 0–1. Thielscher,Rene (1645) – Knops,Peter (2060), Pinneberg–ch, 2007. (=1.a3 d5 2.b4 c6 3.Bb2 a5)

4.b5 Bg4 =.

4.d3 ab4 5.ab4 Ra1 6.Ba1 =+.

4.d3 Qb6 5.Qd2 e6 6.c3 d4 7.ba5= dc3 8.ab6+/– cd2 9.Nd2 Nd7 10.Nc4 Ra6 11.a4 Nb6 12.Nd6 Bd6 13.Bg7 f6 14.Bh8 Na4 15.f3 Kf7 16.e4 Ne7+= 17.d4 Bb4 18.Kf2 Bc3 19.Ra2 Bd4 20.Kg3 Ra5 21.Ne2 Rg5 22.Kh3 Rh5 23.Kg4= Rg5 24.Kh3 Bf2?? 25.g3 Nb6 26.f4 Rg8 27.Bf6 Kf6 28.e5 Kf7 29.Nc3 Bd4–+ 30.Ne4 Nbd5 31.Bc4 b5 32.Bb3 c5 33.Nd6=+ Kg7 34.Nb5 Bb7 35.Ra7+= Rb8 36.Rd1 Nc6=+ 37.Ra4 Ne3 38.Rd3 (38.Rd2 Bc8 39.Nd4 cd4=+). Bui Dac Khuong – Nguyen Viet Chung, VIE–ch U15 Vung Tau, 2004.

4.e3 b5 5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 Nd7 8.e4 e6 9.0–0 Qc7 10.Qe2 Ne7 11.Re1 Nb6 12.Bh5 (better is 12.Bd4+=) 12...Rg8?? (12...Na4 13.Bc3 Nc3 14.Nc3=) 13.Qf3?? (better is 13.ed5 g6 14.de6+–) 13...g6= 14.Bg4 a4 (14...Nc4 15.Bc3+=) 15.Nc3 (15.ed5 Ned5 16.Qh3 Bg7=) 15...Nc4 16.Bc1 Bg7 17.ed5 ed5 (17...Nd5? 18.Nd5 cd5 19.Be6 fe6 20.Re6 Kd7 21.Qf7 Kc8 22.Rc6 (22.Qg8?! Kb7 23.Qh7 Rh8 24.Qg6 Ba1=) 22...Qc6 23.Qg8 Kb7 24.Qg7 Qc7 25.Qc7 Kc7 26.d3+–) 18.Rb1 (better is 18.Qh3=) 18...f5?? (18...h5 19.Bh3+=) 19.Bh3?? (19.Nd5 cd5 20.Qd5+/–) 19...0–0–0 20.Ne2 Be5 21.g3 Rge8 22.d3 Nd6 23.Nf4 Ng8 24.g4 g5 25.Ne2 f4 26.Bb2 Nf7 27.Nd4 Nd6 28.Ne6 Re6+= 29.Be5 Qe7 30.Bc3= Re8 31.Re6 Qe6 32.Re1 Qd7 33.Bg2 Re1 34.Be1 Qe6 35.Qd1 Qe5 36.Bd2 Nf6 37.h3 Kd7 38.Bf3 Nfe8 39.Be2 d4 40.Bf3 Nc7 41.Qb1 Nd5 42.Qa1 Nc3 43.Bc3 dc3 44.Kf1 Ne8 45.Qd1 Nc7 46.d4 Qe6 47.Qd3 Nd5?? 48.Qh7+– Kd6 49.Bd5 Kd5 50.Qd3 Qe4+/– 51.Qc3 Qd4 52.Qd4 Kd4 53.Ke2 Kc3?? 54.Kd1 Kb2–+ 55.f3?? Ka3 56.Kc1 Kb4 57.Kb2 a3 58.Kb1 Kc3 59.Ka2 b4 60.h4 gh4 61.g5 h3 62.g6 h2 63.g7 h1Q 64.g8Q–+ b3 65.Ka3?? Qa1# 0–1. Pies,Gerhard – Seelig,Jochen, Leverkusen–ch op, 2005.

4.e3 Qb6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Qb6 4.a3 a5).

4.e3 Qd6 5.b5 =.

4.Nf3 ab4 5.ab4 Nf6?? (better is 5...Ra1 6.Ba1 f6=) 6.Ra8+– Na6 7.Ra6! ba6 8.Bf6 (8.c4 dc4 9.Qa4 Qb6+–) 8...gf6 9.e3 Bg4 (9...e5 10.c3+–) 10.Be2 (10.c3 Qb6+–) 10...Bg7 (10...e5 11.c3+–) 11.Nd4 Be2 12.Qe2 f5 (12...Qc8 13.e4+–) 13.Nf5 Bf6 14.Qa6 0–0 (14...Qc7 15.c4+–) 15.Qe2 (better is 15.Qc6!? e6 16.Ng3 Qb8+–) 15...e6 16.Qg4 Kh8 17.Nd4 Rg8 18.Qf3 Bd4 19.ed4 Qc7 20.Qf6 Rg7 21.0–0 Qb6 22.c3 Qc7 23.h4 h5 24.Qh6 Kg8 25.Qh5 Qf4 26.f3 Qg3 27.Rf2 Qf4 28.g4 f5 29.g5 Rh7 30.Qg6 Rg7 31.Qe6 Kh7 32.Qh6 Kg8 33.Kf1 Qc7 34.Qe6 Kh8 35.Qf5 Qb7 36.Qf8 Kh7 37.f4 Qa6 38.Kg2 Qd3 39.Rf1 Qe4 40.Kg1 Qd3 41.Kg2 Qe2 42.Kg1 Qg4?? 43.Kf2+– Qh4 44.Ke3 Qg3 45.Ke2 Qg2 46.Rf2 Qe4= 47.Kf1 Qb1?? 48.Kg2+– Qe4 49.Kg3 Qd3 50.Kg4 (50.Kg4 Qf3 51.Rf3 Rg5 52.Kg5 c5 53.Rh3#) 1–0. Baer,Cy (1895) – Silies,Martin (1850), RSS7E easy–66, 2007.

4.Nf3 Bf5 5.e3 e6 6.c4 Nf6 7.c5 b6 8.Be2 bc5 9.bc5=+ Bc5 10.Qc1 0–0?? 11.Qc5+– Nfd7 (11...Nbd7 12.Qc6 Rc8 13.Qa6+–) 1–0. kiloracer (2100) – vampirex (2190), net–chess.com, 2005.

4.e3 ab4

5.ab4 Ra1

6.Ba1 Qd6 7.b5 =.

6.Ba1 Qb6

7.b5 Bf5 8.g4 Bg6 9.Nf3 Nd7 10.Bd4 c5 11.Bb2 Ngf6 12.g5 Ne4 13.Nc3 Nc3 14.Bc3 e6 15.Nh4 d4 16.Ng6 hg6 17.Bb2 Be7 18.f4 e5 19.ed4 ef4 20.Qg4 Qd6 21.dc5 Qc5 22.Bg7 Rh5 23.Qf4 Rg5 24.Qe4 Rd5 25.Bc4 Rf5 26.Rf1 Nb6 27.Bd3 Rf1 28.Bf1 1–0. marekt – leliebeest, gameknot.com, 2001.

7.b5 Nf6 8.c4 Bf5 9.Nc3 e6 10.Nf3 Nbd7 11.bc6 (11.Nh4 Bg6=) 11...bc6 12.Nd4 (12.Nh4 Be4=) 12...Bg6 13.Qa4 c5 (13...Nb8 14.cd5 ed5 15.Be2=) 14.Ndb5 (14.Nc6 Bd6=) 14...Qb7 (14...Qc6 15.cd5 ed5 16.Qa5=) 15.cd5 ed5 (worse is 15...Nd5 16.Nd5 ed5 17.Bg7+/–) 16.Qa5 Be7 17.Nc7 Kf8 18.Ba6 Qb6 (18...Qb8 19.N7b5+= (19.N7d5? Nd5 20.Bb5 Bd8–+)) 19.Qb6 Nb6 20.0–0 (20.Bb7 d4 21.ed4 cd4=) 20...Bd8 21.N3b5 Ne4 (21...Bd3 22.Rc1 Ne4 23.f3 Nd2 24.Rc5 Bb5 25.Bb5=) 22.d3 Nd2 23.Rd1+= Nb3 24.Bb2 Na4 25.Be5+/– d4 26.ed4 cd4 27.Bd6 Be7?? 28.Re1+– h5 29.Re7 Kg8 30.Be5 Kh7 31.Nd4 Nd4 32.Bd4 Rd8 33.Be3 Bd3 34.Bd3 Rd3 35.h3 Kg6 36.Nb5 Nb2 37.Nd4 Nc4 38.Nf3 f6 39.Nh4 Kh7 40.Nf5 (40.Nf5 Rd5 41.Rg7 Kh8 42.Rc7+–) 1–0. Bianchi,G – Sorin,A, Buenos Aires, 1985.

7.b5 Nf6 8.c4 Bf5 9.Nc3 e6 10.Nf3 Be7 11.Be2 (11.cd5 ed5 12.Nd4 Bg6=) 11...0–0 (11...dc4 12.Bc4 0–0 13.0–0=) 12.0–0 (12.bc6 Nc6 13.Nh4 dc4 14.Nf5 ef5 15.Bc4 Ne5=) 12...Nbd7 (12...dc4 13.Bc4 Rc8 14.d3=) 13.d4 (13.bc6 bc6 14.Nh4 Bg6+=) 13...dc4= 14.Bc4 Nd5 (14...Ra8 15.Qe2=) 15.Qb3 (15.bc6 Qc6 16.Qb3 Nc3 17.Qc3 Qd6=) 15...Nc3 (15...Ra8 16.e4 Ra3 A) 17.Nd5? cd5 18.Qb2 Be4–+ (18...dc4?! 19.ef5 Rb3 20.Qc2–/+); B) 17.Qc2=) 16.Bc3 cb5 17.Qb5 (worse is 17.Bb5 Bd3!? 18.Rb1 Bb1 19.Qb1 Nf6–+) 17...Qb5 18.Bb5 Nb6 (18...Rc8 19.Bd7 Rc3 20.Ra1+=) 19.Ba5 (19.Re1 Nd5 20.Bb2 Be4=) 19...Nd5 20.Rc1 Ra8 21.Be1 g6 22.h3 h5 23.Nd2 Bb4 24.Nf3 Be1 25.Ne1 Ra5 26.Bf1 Nb4 27.f3 g5 28.e4 Bg6 29.Rc8 Kg7= 30.Rc7 Nc6 31.Rd7 Ra1 32.Nd3 Rb1 33.Nc5 Kf8 34.d5 ed5 35.ed5 Na5 36.d6 Bf5= 37.Rc7 Rd1 38.d7 Ke7+= 39.d8Q Kd8 40.Rf7 Bc2 41.Kf2+/– b6 42.Ne6 Ke8 43.Rg7 Rd5 44.Ng5 Ba4 45.f4+– Bd7 46.Be2 h4 47.Ne4 Kf8+/– 48.Rg8 Kg8 49.Nf6 Kf7 50.Nd5 b5 51.Bh5 Ke6 52.Nb4 Kd6 53.Bg4 Be8 54.Ke3 Nc6 55.Nd3 Bf7 56.Bf3 Ne7 57.Be4+/– Nd5 58.Kd4 Nf6 59.Ne5 Bh5 60.Bf3 Be8 61.Be2 Nd5 62.Nd3 Bg6+= 63.Bf3 Nc7 64.Be4 Be8 65.Ne5 Bh5 66.Bf3 Be8 67.Be4 Bh5+– 68.f5 Ne8 69.Bd3 b4 70.Bc4 Nf6 71.Nd3 Bd1? 72.Nb4+– Nd7 73.Nd3 Bc2 74.Be6 Bd3 75.Kd3 Nf6 76.Ke3 Ke5 77.Kf3 Nh5 78.Bc8 Nf4 79.g3?? Nh3? 80.gh4 Nf4 81.Kg4 Nd5 82.Kg5 Ne7 83.Be6 Nc6 84.h5 Nd4 85.h6 Nf3 86.Kg6 Nh4 87.Kg7 Nf3 88.h7 Ng5 89.h8Q Ne4 90.Kf7 Kf4 91.Qh4 Ke5 1–0. Koester,Roman (2085) – Schneider,Heiko (2205), Oberliga East B, 2006.

7.b5 Nf6 8.Be2 Nbd7 =.

7.b5 Nf6 8.Nf3 (8.Be2 Nbd7=) 8...Bf5 (8...Bg4 9.c4=) 9.Be2 e6 10.0–0 Be7 11.Nh4 Bg6 12.Ng6 (12.Nc3 Bd6=) 12...hg6 13.bc6 bc6 14.c4 Nbd7 15.d4 Ne4 (15...Qc7 16.h3+=) 16.Nd2 Nd2 17.Qd2 f5 (17...Qb3 18.c5+=) 18.Bc3 (18.h3 Qb3+/–) 18...Qb8 (18...g5 19.h3+=) 19.g3 (19.h3 Nf6+/–) 19...g5+= 20.Qc2 (20.Bd3 g4+=) 20...Kf7 21.c5 Nf6 22.f3+/– g6 23.Rb1 Qf8 24.Rb6 g4 25.f4 Ne4 26.Bd3 Nc3 27.Qc3 g5 28.Rc6+– gf4 29.ef4 Qh6 30.Qb2 Bf6 31.Qb7 Kg6 32.h4 gh3 33.Re6 h2 34.Kh1 Qh5 35.Be2 Qh3+= 36.Rf6 Kf6 37.Qc6 Kg7 38.Qd7 ½–½. Muri,H – Terpstra,W, (year?).

7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

4.e3 Nd7

5.c4 e6 6.Nf3 Qc7 7.Be2 e5 (better is 7...Ngf6!?=) 8.cd5+/– cd5? (8...ab4 9.ab4 Ra1 10.Ba1 Bb4 11.Nc3+=) 9.0–0 (better is 9.Nc3 Ne7 10.Rc1+–) 9...Ngf6 (9...e4 10.Nd4 ab4+–) 10.Nc3+/– ½–½. mr5reasons1 (1830) – lovechess00007 (1910), gameknot.com, 2013.

5.c4 Ngf6 6.cd5 cd5 7.Nf3 g6 8.Be2 Bg7 9.0–0 0–0 10.d4 Ne4 11.Nbd2 Ndf6 12.Ne4 Ne4 13.Nd2 Nd6 14.Bf3 e6 15.e4 de4 16.Be4 ab4 17.ab4 Ra1 (17...Ne4? 18.Ra8 (< 18.Ne4 Ra1 19.Qa1 Qd5=+) 18...Nd2 19.Qd2+–) 18.Ba1 Qb6 19.Qf3 Qb4 20.Qc3? (Better is 20.Bc3!? Qb5 21.Rb1–/+) 20...Qc3–+ 21.Bc3 Rd8 22.Bd3 Bd7 23.Rb1 Bc6 24.Nb3 Ra8 25.Bb4 Ne8 26.Bc3 Nc7 27.Nc5 Nd5 28.Bb2 b6 29.Nb3 Nb4 30.Rd1? Bd5 31.Nc1 Rc8 32.Bb1 b5 33.f3 Bc4 34.Kf2 Bh6 35.Ke1 Nd5 36.Bd3 Ne3 37.Rd2 Bd3 38.Nd3 Nc2 39.Kd1 Ne3?? 40.Ke2?? Ng2–+ 41.f4 Nf4 42.Nf4 Bf4 43.Rd3 Rc2 44.Kf3 Rb2 45.Kf4 Rh2 46.Rb3 Rf2 47.Ke5 h5 48.Ke4 Rf5 49.Rc3 h4 50.Rc8 Kg7 51.Rc1 g5 52.Ke3 h3 53.Rh1 g4 54.Ke4 b4 55.d5 Rd5 56.Kf4 f5 (57.Kg3 e5–+) 0–1. Melzig,Ernst – Eckl,Josef (1650), 12sen.WttgEM/Ellwangen, 2000.

4.e3 Bf5

5.c4 ab4 6.Nf3 dc4–/+ 7.Bc4 b5 8.Be2 e6 9.ab4 Ra1 10.Ba1 Nf6 11.0–0 Bb4–/+ 12.Qb3 Be7 13.d3 0–0 14.Rc1=+ Qb6 15.Nbd2 Rd8 16.Nh4 Bg6 17.Ng6= hg6 18.d4 Nbd7 19.Bb2 Ra8 20.Nf3 Ne4 21.Bd3 Nd6 22.Bg6+= Nc4 23.Be4 c5?? 24.Ba8+– (24...Nb2 25.Qb2+–) 1–0. pierre (2055) – GmLencioni, internet, 2006.

5.c4 dc4 6.Bc4 ab4 7.ab4 Ra1 8.Ba1 =+.

5.c4 Nd7 6.cd5= cd5 7.Bb5 e6 8.Nf3 f6 (8...Ngf6 9.Qa4=) 9.ba5 (9.Nd4 Nh6=) 9...Ra5 10.a4 (10.Nc3 Bc5=) 10...Kf7 (10...Bd6 11.Nd4 Nh6 12.Qh5 Bg6 13.Qh3+=) 11.0–0 (11.Bc3 Ra8+=) 11...Bd6 12.Nd4 (12.Nh4 Ne7+=) 12...Bg6 13.Nc3 (13.f4 Ne7+=) 13...Ne7 14.f4 Nf5? (better is 14...Nc5+=) 15.Nf5+– Bf5 16.g4 Be4 (16...Bg6 17.f5+–) 17.d3 (17.Ne4?! de4 18.Qc2 Nc5+/–) 17...h5? (17...Bg6 18.f5 Kg8 19.fg6 hg6+–) 18.de4 hg4 19.ed5 e5 20.Ne4 Qb6 21.Qg4 Qe3 22.Rf2 Qe4 23.Qd7 Be7 24.Qe6 (24.Qe6 Kg6 25.Qe7+–) 1–0. marr – tzychna, internet, 2010.

5.c4 e6 6.Nf3 Nf6 7.b5 Nbd7 8.d4 c5 9.Be2 Be7 10.0–0 0–0 11.Nbd2 Bg6 12.Nh4 Be4 13.f3 Ng4?? 14.fg4?? Bh4+= 15.Ne4 de4 16.d5 Qe8 17.Rf4 ed5 18.Qd5+/– Qc8 19.g5 Nb6 20.Qf5 Qf5+= 21.Rf5 Na4 22.Rb1 f6 23.gf6 Bf6 24.Bf6+= Rf6 25.Rf6 gf6 26.Rf1 Kf7 27.Rf5 Rd8= 28.Kf1 (28.Bh5 Ke7 29.Kf2 Rd3=) ½–½. Dessing,Bastiaan – Lambrechts,Koen, Hengelo U14 open, 2003.

5.Nf3 Nf6 =.

4.e3 Nf6

5.c4 ab4 6.ab4 Ra1 7.Ba1 Qb6 8.Bf6 ef6=+ 9.b5 Be6 10.cd5 cd5 11.Nf3 Nd7 12.Nc3 Bb4 13.Qb3 Attacking the isolated pawn on d5 13...Qc5 14.Na2 Ba5 15.Qb2 0–0 16.Be2 Ne5 17.Ne5 fe5 18.Qe5 Qc2 Threatening mate: Qxd2 19.Nc3 Rc8 20.Bd1=+ Qb2 21.0–0 Qd2 22.Ne2 h6 23.Nd4 Bc3 24.Bf3 Bd4 25.ed4 Qa2 26.h3 Qc4 27.Be2 Qb4 28.Bd3 Qd2 29.Be2 Kh7 30.Rd1 Qb2 31.h4 Rc1 32.Bd3 g6 33.Rc1 Qc1 34.Kh2 Qc3 35.Qe3 Qc7 36.g3 h5 37.Qg5 Kg7 38.Be2 Kf8 39.Qh6 Ke8 40.Qh8 Kd7 41.Qf6 Qd6 (42.Bd3 Qe7+=; 41...Qc2 42.Qf3=). Dusky,John (1935) – McHugh,Edward (2310), 7th Bradley Open, 2002.

5.c4 ab4 6.ab4 Ra1 7.Ba1 dc4 8.Bc4 b5 9.Be2 =+.

5.c4 ab4 6.ab4 Ra1 7.Ba1 Nbd7 8.c5 e5 9.Qa4 Be7 10.f3 (10.d4 Qc7=) 10...0–0 11.d4 ed4 12.Bd4 Re8 13.Nc3 Nf8 14.Bd3 Ng6 (14...Ne6 15.Nge2+=) 15.Bg6 hg6 16.Nge2 Bf5 17.0–0 Bd3 18.Rd1 Ba6 19.Ng3 Bc4 20.Qa7 Qa8 21.Qa1 Qa1 22.Ra1 Rb8 23.e4 de4 24.Nce4 Ne4 25.Ne4 Rd8 26.Bf2 f5+= 27.Ng3 Bf6 28.Re1 Bc3 29.Rc1 Rd3 30.h3 Bb5 31.h4 Bd2 32.Rb1+= Rc3 33.Kh2 Rc4+= 34.Rb2? Bf4?? 35.Kh3+= Bg3 36.Bg3 Kf7 37.Be1 Rc1 38.Bf2 Rh1 39.Kg3 Rd1 40.Kf4 Rd5 41.Kg5 Bf1 42.g3 Bg2 43.Kf4 Rd3 44.Be3 Bf1 45.Rd2 Ke6 46.g4 Rd2 47.Bd2 fg4 48.fg4 Kf7 49.Kg5 Bb5 50.h5 gh5 51.gh5 Bd3 52.Kf4 Ke6 53.Ke3 Ba6 54.Kf4 Bd3 55.Bc3 Be2 56.Kg5 Kf7 57.Be5 Bd1 58.Bd4 ½–½. Baer,Cy (1895) – Silies,Martin (1850), RSS7E easy–64, 2007.

5.c4 dc4 6.Bc4 b5 7.Be2 =+.

5.c4 Bf5 6.b5 dc4 (6...e6 7.Nc3=) 7.Bc4 e6 8.Nf3 Be7 (8...Bd3 9.Bd3 Qd3 10.Nc3=) 9.Nd4 Be4 (9...Bg6 10.Qa4=) 10.f3 (10.d3 Bd5=) 10...Bd5 11.Be2 c5=+ 12.Nc2 b6 13.a4 Nbd7=+ 14.Nca3 Qc7 15.e4 Bb7 16.Nc4 0–0 17.Nba3 Nh5 18.0–0 Bg5 19.Qe1 Nf4 ½–½. Althoff,Guntram – Baumhackel,Mario, Weilburg NBG op, 1995.

5.c4 Bf5 6.Nf3 e6 7.b5 dc4 8.Bc4 Bd3 9.Qb3 Bc4 10.Qc4 cb5 11.Qb5 Qd7 12.Nc3 Be7 (12...Nc6 13.0–0=) 13.Ne5+= Qb5 14.Nb5 Na6 15.Ke2 Rc8 16.Rhc1 0–0 17.Bd4 Nd5 18.Nc4 b6 19.Nb6 (19.Bb6?! Rb8+=) 19...Nb6 20.Bb6 Rb8 21.Rc6 Rb7 (21...Bd8 22.Bd8 Rb5 23.Be7+–) 22.a4 (better is 22.Ba5!? Rb5 23.Ra6+–) 22...Nb4+/– 23.Rc7 Rb6 24.Re7 Rc8 25.Ra7 Nc6 26.Rc7 Rc7 27.Nc7 Rb4 28.Nb5 Ne5 29.Rc1 f6 30.Rc8 Kf7 31.Nc3 g5 32.Rc5 Nc4 33.Rb5 Rb5 34.ab5 Nb6 35.Kd3 e5 36.Kc2 Ke6 37.Kb3 Kd6 38.Na4 Nd7 39.Kc4 e4 40.Kd4 f5 41.f3?? ef3= 42.gf3 h5 ½–½. Grube,Joerg (1790) – Gohla,Ulf (2005), Dortmund9, 2003.

5.Nf3 ab4 6.ab4 Ra1 7.Ba1 Bf5 =.

5.Nf3 b5 =.

5.Nf3 Bg4 6.h3 (6.b5 e6=) 6...Bf3 7.Qf3 Nbd7 8.Be2 (8.b5 e5=) 8...e5 (8...ab4 9.ab4 e5 10.Ra8 Qa8 11.Ba3=+) 9.0–0 (9.b5!?=) 9...ab4=+ 10.ab4 Ra1 11.Ba1 Bd6 12.Qg3 0–0=+ 13.f4 ef4–/+ 14.ef4 Bb4 15.Bd3 Re8 16.Nc3 b5 17.Kh1 Bf8 18.Ne2 b4 19.Bf6 Qf6–+ 20.Qf3 Nc5 21.Ng3 Nd3 22.Qd3 Bd6 23.Ne2 c5 24.Qb5 Qe6 25.Ng1 h6 26.Nf3 Rb8 27.Qa4 Bf4 (28.Re1 Qg6–+) 0–1. Handke,Harald – Handke,Florian (2230), Regensburg op, 1997.

3.a3 e6

4.ba5 Qa5 5.Nf3 Nf6 6.c4 d5 7.e3 Bc5 8.Be2 Nbd7 9.0–0 Nb6 10.d4 Be7 11.Nbd2 Na4 12.Qb3 dc4 13.Bc4 0–0 14.Bc1 b5 15.Bd3 c5 16.Bb5 Bd7 17.Bd7 Nd7 18.Nc4 Qa6 19.Nb2 Nb2 20.Bb2 Rfb8 21.Qc2 Bf6 22.Rfb1 Rc8 23.dc5 Rc5 24.Qd2 Bb2 25.Rb2 Rac8 26.h3 Nf6 27.Qb4 Qd6 28.Rc2+/– Ne4 29.Rc5 Qc5?? 30.Qc5 Rc5+/– 31.Nd4 h5 32.a4 Ra5 33.Nb3 Ra6 34.a5 g5 35.f3 Nd6 36.Nc5 Rc6 37.a6 Nb5 38.Ne4 Kg7 39.a7 Na7 40.Ra7 Kg6 41.Ra2 f5 Black plans g4 42.Nd2 Rc3 43.Kf2 g4 44.hg4 hg4 45.Ra6 Kf6 46.f4 Rc2 47.Ke2 Ke7 48.Ra7 Kd6 49.Kd3 Rc1 50.Nc4 Kc6 51.Ra6 Kc5 52.Re6 Rc4 53.Rc6 Kc6 54.Kc4 Kd6 55.Kd4 Ke6 56.Kc5 g3 Black threatens to counter with Kc6 57.Kc6 Ke7 58.Kd5 Kf6 59.Kd6 Kf7 60.Ke5 (60...Ke7 61.Kf5+–) 1–0. Bury born and bred – coolerdude, ChessWorld.net, 2004.

4.b5 d5 5.e3 Nf6 6.f4 Ne4 7.Nf3 Qb6 8.Nc3 Nc3 9.Bc3 cb5 10.Bd4 Qc7 11.Bb5 Bd7 12.Be5 Bd6 13.Bd7 Nd7= 14.Bd6 Qd6 15.0–0 0–0 16.Nd4 Rfc8 17.Qe2 Qc5 18.Rfb1 b6 19.Rb3 e5 20.Rb5 Qc7 21.fe5 Qe5 22.Rf1 Rab8 23.c3 Nf6 24.a4 Qd6 25.Nf5 Qd7 26.Rd5! Qa4 27.Rd4 Rc4?? 28.Rc4 (28...Qb3 29.Rg4+–) 1–0. nordlicht – Naunhofer, mySchach.de, 2004.

4.e3 Nf6 5.b5 d5 6.Nf3 c5 7.a4 b6 8.c4 Bb7 9.Be2 Nbd7 10.0–0 Be7 11.d3 0–0 12.Nbd2 Qc7 13.e4 (better is 13.Qc2!?=) 13...de4–/+ 14.de4 Ne4 15.Ne4 Be4 16.Nd2 Bb7 17.Bf3 Bf3 18.Qf3 Bf6 19.Bf6 Nf6 (worse is 19...gf6 20.Rad1=) 20.Ne4 Ne4 21.Qe4 Rad8 22.Rfd1 Rd1 23.Rd1 Rd8 24.Qe2 Kf8 25.g3 Ke7 26.Kf1 Rd1 27.Qd1 Qd6 28.Qd6 (28.Qf3!?–/+) 28...Kd6–+ 29.Ke2 Ke5 30.Ke3 g5 31.h3 h5 32.f3 f6 33.Kd3 h4 34.g4 (34.gh4 gh4 35.Ke3–+) 34...Kf4 35.Ke2 Kg3 (35...Kg3 36.Ke3 f5–+) 0–1. Hal1958 – Pawnstorm, playchess.de, 2005.

4.e4 Nf6 5.e5 Ng8 6.b5 d5 7.Nf3 a4 8.Nc3 d4 9.Ne4 c5 10.Bc4 Nd7 11.c3 Nb6 12.Ba2 d3 13.0–0 c4 14.Nfg5 h6 15.Nf7 Kf7 16.Qf3 Ke8 17.Rab1 Qc7 18.Qg3 Qf7 19.Qe3 Qc7 20.Qd4 Bd7 21.Nd6 Bd6 22.ed6 Qd8 23.Bc1 Rc8 24.Qg7 Qf6 25.Qg4 e5 26.Qe4 Bc6 27.bc6 1–0. marus1 – qsc, internet, 2001.

4.c4 Nf6

5.ba5!? d5 6.cd5 ed5 7.Nf3 =+.

5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5 4.b5 c6 5.c4).

5.e3 ab4=+ 6.Nf3 d5 7.cd5 (7.Ne5 dc4 8.Bc4 ba3 9.Na3 b5–/+) 7...ed5–/+ 8.Bd3 ba3 9.Na3 Be7 (9...Bg4 10.0–0–/+) 10.0–0 0–0 11.Nc2 (11.Qc2 Nbd7–/+) 11...Ra1 12.Qa1 Ne8 (12...Re8 13.Rb1–/+) 13.Ncd4 g6 (13...b5 14.Rc1 Bb7 15.Bf5=+) 14.Rc1 Qd6 15.Nb5 Qd8 (15...Qd7 16.Nbd4=+) 16.Nbd4 f5 17.Ne5 Nd6 (17...Bf6 18.f4=) 18.Qa7 =. Wolfelschneider,Peter – Houthuijzen, corr SOK, 1996.

3.a3 Nf6

4.ba5 Ra5 5.Bf6 ef6 6.Nf3 d5 7.e3 Nd7 8.c4 Nb6 9.cd5 Nd5 10.Be2 Bg4 11.0–0 Bd6 12.d4 Qc7 13.h3 Bf5 14.Bd3 Be6 15.Qc1 Qe7 16.Qc2 Qd8 17.Bh7? (Better is 17.Be4!?=) 17...g6–/+ 18.Bg6 fg6 19.Qg6 Bf7 20.Qf5 Qd7 21.Qd7 Kd7 22.Nfd2 Be7 23.Rc1 Nb6 24.Rc3 Kc8 25.Ne4 f5 26.Ned2 Rg8 27.Rd3 Be6 28.f3 f4 29.ef4 Nd5 30.Nc4 Ra6 31.f5 Bf5 32.Rd1 Bh3 33.g4 Ra7 34.Ne5 Bg5 35.Nc4 Rd8 36.Kh2 Rh8 37.Kg3 (37.Nbd2 Bf4 38.Kg1–+) 37...Bh4 38.Kh2 Bf2 39.Nd6 Kb8 (40.Nf7 Rh4 41.Ng5 Bf1 42.Nh3 Rh3#) 0–1. GLChess207e – Gromit300, computer chess game, 2000.

4.ba5 d5 5.e3 Qa5 6.Nf3 Bg4 7.Be2 Nbd7 8.0–0 e5 (8...Bf3 9.Bf3 e5 10.Be2=) 9.d3 (better is 9.Ne5 Be2 10.Qe2 Ne5 11.Be5+/–) 9...Bd6+= 10.Nbd2 0–0 11.h3 Bh5 12.Nh4 Be2 13.Qe2 Rae8 (13...Qa4 14.Ndf3+=) 14.c4 Bb8 15.cd5 cd5 16.Nf5 e4 17.de4 Qc7 (17...de4!? 18.Nd4 Qe5=) 18.Ng3 de4 19.Rfc1 Qa5 20.Bc3 Qg5 21.Qe1 (better is 21.Bb4!? Bg3 A) 22.Bf8?! Be5 (worse is 22...Nf8 23.fg3 Qg3 24.Rab1+/–) 23.Bb4 Ba1 24.Ra1 Rc8=; B) 22.fg3 Qg3 23.Bf8 Rf8 24.Rc4+=) 21...Ne5 (better is 21...Bg3!? 22.fg3 Rc8+=) 22.Nde4 (22.Nde4 Ne4 23.Ne4 Nf3 24.Kh1 Re4 25.gf3+=) 1–0. Fournier,Frederic (1800) – torp2 (2010), Active, 2007.

4.b5 d6 =.

4.b5 e6 5.e3 cb5 6.Bb5 Be7 7.c4 0–0 8.Nf3 d5 9.cd5 ed5 10.0–0 Bg4 11.d3 Nc6 12.Nbd2 Na7 13.Ba4 b5 14.Bc2 b4 15.h3 Bh5 16.Ba4 Nd7 17.Bd7 Qd7 18.ab4 Bb4 19.Ne5 Qf5 20.g4 f6 21.Nef3 Bg4 22.hg4 Qg4 23.Kh1 Rac8 24.Ba3 Bd2 25.Nd2 Qh4 26.Kg2 Qg5 27.Kh3 Qh6 28.Kg3 Rf7 29.Rh1 Qg6 30.Qg4 Qd3 31.Qe6 h6 32.Rhc1 Rd8 33.Bb2 Nb5 34.Ra5 Nd6 35.Rd5 Ne4 36.Ne4 Qd5 37.Qd5 Rd5 38.Rc8 Kh7 39.Kf3 Rf5 40.Kg2 Kg6 41.Bd4 Rb5 42.Kg3 Rb1 43.Nc3 Rg1 44.Kf3 Rd7 45.Ne2 Rd1 46.Rf8 Kh7 47.Nf4 Rc1 48.Re8 Rb7 49.e4 Rh1 50.Kg2 Rd1 51.Rd8 Rc1 52.f3 Rcc7 53.Nd5 Rc4 54.Ne3 Rcc7 55.Rd5 Kg6 56.Nf5 Rd7 57.Nd6 Rb3 58.Bf2 h5 59.Kg3 Ra3 60.Bd4 Rd3 61.Kf4 Ra3 62.Bb6 Ra6 63.Nc8 Rb7 64.Ba5 Rc6 65.Nd6 Ra7 66.Nf5 Kf7 67.Nd4 Rc1 68.Bb6 Rb7 69.Bc5 Rc7 70.Ba3 Rd1 ½–½. Taulien,Hans_Juergen (2225) – Riemer,Wolfgang (2310), RSX8D – priv – XMAS, 2004.

4.c4 ab4 5.ab4 Ra1 6.Ba1 e6 7.Qb3 Qb6 8.c5? (better is 8.b5=) 8...Bc5!–+ 9.Nh3 (9.bc5 Qa5) 9...Qb4 10.Qd3 Qb5 (10...d5 11.e3–+) 11.Qc2 (11.Qb5 cb5 12.Bf6 gf6–/+) 11...Na6 12.e3 Nb4 13.Qb3 Qa5 14.Bb2 Qa2 15.Qa2 Na2 16.Bc4 Nb4 17.0–0 d5 18.Be2 Bd6 19.Nc3 b5 (19...e5 20.Ng5–+) 20.Ra1 0–0 21.Ng5 Bb7 (21...e5 22.Ba3 Bf5 23.e4 de4 24.Rb1–+) 22.Ra7 Rb8 23.d4 h6 24.Nf3 Ne4 25.Ne5 Be5 26.de5 Ba8 (26...Nc5 27.Ba3 Nbd3 28.Na2–+) 27.Nd1 c5 28.f3 Nd2 29.Bb5 Rb5 30.Ra8 Kh7 31.Nc3 (31.Bc3 Nc4–+) 31...Rb7 32.Na4 (32.Nd1–+) 32...Nd3 33.Nc5 Nc5 (33...Rb2?! 34.Nd3 Rb3 35.Kf2–/+) 34.Bd4 Nd3 35.Ra1 Rc7 36.Rd1 Rc2 37.Bb6 (37.Ba1 Kg6–+) 37...Ne5 38.Kf2 Ndc4 (38...Ndc4 39.Kg3 Nb6–+) 0–1. Diviak,Rudolf (1795) – Pereszlenyi,Gejza (2020), Banska Stiavnica SVK, V4 Open, 2013.

4.c4 b5 5.cb5 ab4 6.ab4 Ra1 7.Ba1 cb5 8.e3 e6 9.Bb5 Bb4 10.Qa4 Qa5 11.Qa5 Ba5 12.Bf6 gf6 13.Ne2 Bb7 14.f3 Ke7 15.Kf2 Nc6 16.Nbc3 h5 17.Ra1 Bc7 18.h4 Rg8 19.Ne4 f5 20.N4g3 Rh8 21.Ra4 Kf6 22.Nf4 Attacking the isolated pawn on h5 22...Bf4 23.Rf4 Ne5 24.Ra4 Bc6 25.Bc6 Nc6 26.d4 Ne7 27.Ne2 (27.Ra7 d6+=). Mroz,Antoni – Baranowski,Adam, corr Tch8–Poland, 1989.

4.c4 d6 5.f4 b5 6.cb5= cb5 7.e3 Bd7 8.Nf3 ab4 9.ab4 Ra1 10.Ba1 e6 11.Nc3 The isolani on b5 becomes a target d5 12.Nb5 Bb4 13.Qa4 Qa5 14.Qa5 ½–½. Sundin,Tommy – Johansson,Kent, Norrkoeping Sweden, 1988.

4.e3 b5 5.ba5 Qa5 6.c4 bc4 7.Bc4 d5 8.Be2 Nbd7 9.Nf3 e6 10.0–0 Bd6 11.Qc2 Bb7 12.d4 0–0 13.Nbd2 Rfb8 14.a4 Ba6 15.Bc3 Qc7 16.Ba6= Ra6 17.Rfc1 Ng4 Will h2 fall? 18.h3 Ngf6 19.a5 Qa7 20.Rab1 Rb1 21.Rb1 Qa8 22.Qb2 Ra7 23.Ra1 Rb7 24.Qc2 Qa6 25.Rb1 Rb1 26.Qb1 Bc7 27.Qb4 h6 28.Qa3 Kh7 29.Qe7 Qd3 30.Qb4 Qa6 31.Qe7 Qd3 32.Qb4 Qa6 33.Qe7 (33.Qb2 Qa7= (33...Ba5? 34.Qa3+–)) ½–½. Boehnke,Hartmut – Rosner,Dirk, VM2002–VR–Gr03, 2002.

4.e3 Qb6 5.Bd4 Qc7 6.Nf3 d6 7.Bf6 ef6 8.b5 Bg4 9.h3 Bh5 10.bc6 Nc6 11.g4 Bg6 12.Bb5 Kd7 13.Nc3 Ke6 14.e4 1–0. marus1 – BobbyPeru, internet, 2001.

4.e3 d6 5.Nf3 e5 6.b5 a4 7.Nc3 Bd7 8.e4 Qa5 9.Be2 cb5 10.0–0 Bc6=+ 11.d4 Ne4 12.Ne4+= Be4 13.de5 d5 14.e6 fe6 15.Ng5 Nd7 16.Bh5 Bg6? 17.Ne6+– Qb6?? 18.Re1 Be7 19.Bg6 hg6 20.Ng7 Kf7 21.Qd5 Kf8 22.Ne6 Kf7 23.Nc5 +–. orane – laksmann4, caissa.com, 2006.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5 =.

4.b5 d5

5.e3 e6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6).

5.e3 e6 6.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 a5 6.b5).

5.e3 Bf5 6.Nf3 e6 7.Be2 Bd6 8.0–0 (8.Nc3 0–0 9.Rb1 Nbd7 10.Nd4 Qc7 11.f4 Bg6 12.bc6 bc6) 8...0–0 9.Nh4 (9.Nd4 Bg6 10.f4 c5 11.Nf3 Nbd7 12.Nh4 c4) 9...Nbd7 (9...Be4 10.d3 (10.f3 Bg6 11.Ng6 hg6 12.Nc3 Qc7) 10...Nfd7 (10...Bg6 11.Nc3 Qc7 12.g3 Nbd7) 11.g3= (11.de4 Qh4 12.g3 Qe7) 11...Bg6 12.c4 Nb6) 10.Nf5 ef5 11.g3 (11.Nc3 Re8= (11...Nc5 12.Rb1 Rb8) 12.f4 Nc5) 11...g6 (11...Qe7 12.d4= (12.Nc3 Nc5) 12...Nb6; 11...Nc5 12.Nc3 Qd7) 12.bc6 (12.d4 Qb6) 12...bc6 13.c4 Rb8 14.Ra2 dc4 15.Bc4 Re8 16.Qc2 Ng4 17.Be2 Nc5 18.Bf3 Qe7 19.h3 Nf6 20.d3 Nd5 21.Nd2 Bg3 22.fg3 Ne3 23.Qc3 Rb2 24.Qb2 Qg5 25.Kh2+/– f4 26.Rg1 fg3 27.Rg3 Qf4 28.Qb6 Nf5+= 29.Nf1 Ng3 30.Ng3= Re3 31.Qc5 Rf3 32.Rg2 h5 33.Qc4 Qd6 34.Qh4 Rf4–/+ 35.Qh5 gh5 36.Ne4? Qg6!–+ 0–1. Hoch,Hubertus (2325) – Nogler,Schimun (2420), RSLE, 2010.

4.c3 d5

5.Qc2 g6 6.Nf3 Bg7 7.d3 0–0 8.Nbd2 Nbd7 9.e4 e5 10.g3 (10.Be2 Qe7=) 10...ab4 11.cb4 d4 12.Bg2 Re8 13.0–0 Qe7 14.Nc4 b5 15.Na5 c5 16.Rfc1 Bh6 17.Rcb1 Ba6 18.Bc1 Bc1 19.Qc1 Kg7 20.Nh4 h6 21.Qd2 Rac8 22.Bh3 c4 23.dc4 Ne4 24.Qe1 Nc3 25.c5 Nb1 26.Rb1 Rc7 27.Rd1 Nf6 28.Bg2 Rf8 29.Qe2? Qe6–/+ 30.Re1 Re8 31.Nf3 Rce7 32.Qd2 Qd7 33.Rc1 Ne4 34.Qd3 Nc3 35.c6 Qc7 36.Nd4+= Na2 37.Ra1 ed4 38.Ra2 Re1 39.Bf1 Qe5 40.Rd2 Bc8 41.Kg2 Bf5 42.Qd4 Rf1 43.g4 Bg4! 44.Qg4 Qe1 45.Qd4 ½–½. Habibi,Al (2300) – Gorse,G (2070), 29th Liechtenstein Open, 2011. (=1.a3 Nf6 2.b4 c6 3.Bb2 a5)

5.d4 Nbd7 6.Nf3 b5 7.e3 Nb6 8.Nbd2 Na4 9.Qc2 Nb2 10.Qb2 ab4 11.ab4 Ra1 12.Qa1 Nd7 13.Be2 f6 14.e4 e6 15.0–0 Bd6 16.h3 0–0 17.Bd3 Bb8 18.Re1 h6 19.Nh2 (19.ed5 ed5 20.Nb3 Bd6+=) 19...Qc7 20.Ndf3 de4 21.Re4 e5 22.Qa2 Kh8 23.de5 (23.Nh4 Rd8 24.Ng6 Kh7+/–) 23...fe5 (23...Ne5!? 24.Be2 Bf5+=) 24.Qe2 (24.Ng4 Qd8+=) 24...Re8 25.Nh4 (better is 25.Ng4!?+=) 25...Nf6+= 26.N2f3 Kg8 27.Re3 Nd5 28.Bg6 Re6 29.Bf5 Ne3 (29...Re7 30.Qa2+=) 30.Be6 Be6 31.Qe3 Bd5 32.g3 (32.Ng6 e4+=) 32...Ba7 (better is 32...Qd7+=) 33.Qd2?? (better is 33.Qe5!? Qd7 34.Kg2+=) 33...Qe7 (33...g5 34.Nf5 Bf3 35.Nh6 Kf8 36.Qg5–/+) 34.Qe2 (34.Qe1 g5 35.Ng6 Qe6 36.Nfe5 Qh3 37.Ne7 Kg7 38.Nd5 Qg3 (worse is 38...cd5 39.Nc6 Qg3 40.Kf1 Qh3 41.Kg1 Qg4 42.Kh2 Qf4 43.Kg2+=) 39.Kf1 Qh3 40.Kg1 cd5–/+) 34...e4 35.Nd4 (35.Ng6!? Qf6 36.Nfe5–/+) 35...Bd4–+ 36.cd4 Qb4 37.Qe3 Qb3 38.Qf4?? (better is 38.Qb3 Bb3 39.Kf1–+) 38...Qb1 39.Kh2 e3! 40.f3 e2 41.Nf5 e1Q 42.Nh6 gh6 43.Qg4 Kh8 44.Qc8 Bg8 0–1. Sapareva,Magdalena (1710) – Artunov,Kirkor, 3rd Bulgaria, Memorial Hristo Gerenski, 2010.

5.Nf3 Bf5 6.e3 Nbd7 7.Be2 a4 (7...e5!?+=) 8.0–0= b5 9.Re1 Qc7 10.d3 h6 11.Nbd2 e5 12.c4 e4? (better is 12...bc4!? 13.dc4 Bd6+=) 13.de4+– de4 14.Nd4 Bg4?? (better is 14...Bg6+–) 15.Bg4 h5 (15...Ne5 16.Be2 Nc4 17.Bc4 bc4 18.Nc4+–) 16.Bh3 (better is 16.Bd7 Qd7 17.Qc2 Be7+–) 16...g6 (16...Ng4 17.Qc2 Qh2 18.Kf1+–) 17.Qe2 (better is 17.Nc6 Rh7 18.cb5 Ng4 19.Ne4 Qh2 20.Kf1 Be7+–) 17...c5 (17...Bd6 18.Bd7 Nd7 19.Nb5 cb5 20.Bh8 Bh2 21.Kh1 Be5 22.Be5 Ne5 23.cb5 f5+–) 18.Nb5 Qb6 19.Rad1 Bg7 (19...Rh7 20.Ne4! Ne4 21.Bd7 Ke7 22.Qf3+–) 20.Bd7 Kd7 (20...Nd7 21.Bg7 Rh7 22.Bc3+–) 21.Ne4 Kc8 (21...Ke7 22.Rd6 Qd6 23.Ned6 cb4 24.Qd2+–) 22.Ned6 Kd7 23.Nf7 (better is 23.Nf5! Ke8 24.Rd6 Qb8 25.Ng7 Kf8+–) 23...Ke7 24.Rd6 Qb8 25.Qf3 Kf7 26.Bf6 Rf8 27.Be5 (27.Qd5 Ke8 28.Qe6) 27...Kg8+– 28.Qd5 Kh8 29.Bg7 Kg7 30.Qc5 Rc8 (30...Rf5 31.Rd7 Kh6+–) 31.Qe5 Kh6 (31...Kh7 32.Rd7 Kh6 33.Qg7 Kg5 34.Rd5 Qe5 35.Re5 Kh4 36.Qf6 Kg4 37.Re4) 32.Qf4 Kh7 33.Rd7 Kh8 (33...Kg8 34.Qf7 Kh8 35.Qg7) 34.Qf6 Kg8 35.Qg7 1–0. pieeater – BLUEMOONIE, ChessWorld.net, 2013.

4.c4 d5

5.c5 ab4 6.ab4 Ra1 7.Ba1 b6 =.

5.cd5 Nd5 6.ba5 Ra5 =.

5.cd5 Nd5 6.e4 =.

5.e3 ab4 6.ab4 Ra1 7.Ba1 dc4 8.Bc4 b5 9.Be2 Na6 10.Qb3 (10.Bc3 e5=+) 10...Qd5 (10...e6 11.Bc3=+) 11.Qc3 e6 12.Bf3= Ne4 13.Qd4 f5 14.Bh5=+ Kd8 15.Qb6–/+ Ke7 16.Nf3? Rg8?? 17.Qa7 Qd7+= 18.Ne5 Qa7 19.Nc6 Kd7 20.Na7 Nb4 21.0–0 g6 22.Be2+= Ba6 23.Nb5 Nd5 24.f3 Nd6 25.N1c3 Nb5 26.Bb5 Bb5 27.Nb5 Bb4 28.e4 Nf4 29.Bc3 Bc5= 30.Kh1 Nd3 31.Bd4 Bd4 32.Nd4 Rb8 33.Kg1 Rb4 34.Nc2 Rb2 35.Na3 Rd2 36.Nc4 Rc2 37.Rd1 Rc4 38.Rd3 Ke7 39.ef5 ½–½. Moeller Nielsen – Gross,Gerald, corr 3GMM–44, 1996.

5.e3 dc4 6.Bc4 b5 7.Bb3 +=.

5.e3 Bf5 6.c5 Nbd7 (6...e6 7.Nf3+=) 7.Nf3 Qc7 (7...e6 8.Nc3=) 8.d4 ab4 (8...b6 9.cb6 Qb6 10.Bc3=) 9.ab4 Ra1 10.Ba1 b5 (10...b6 11.Nc3=) 11.Nbd2 (11.Nc3 e6=) 11...Ne4 (11...e6 12.Be2=) 12.Nb3 (12.Ne4 Be4 13.Bd3 Bd3 14.Qd3 Nf6=) 12...g5 (12...e6 13.Nh4=) 13.Bd3+= f6 (13...h6 14.0–0+=) 14.0–0 (14.Ng1 g4 15.f3 gf3 16.gf3 Ng3 17.hg3 Qg3 18.Kf1 Rg8 19.Bf5 Qg2 20.Ke1 Qh1–+) 14...Bg7 (14...e6 15.Bb2+=) 15.Ne1+/– g4 16.f3 gf3 17.Qf3 (better is 17.gf3!? Ng3 18.Rf2 Bd3 19.Qd3+– (19.Nd3?! Nf5=)) 17...Bg6 (17...e6 18.Bb2=) 18.Qe2 0–0 (18...Rg8 19.Nf3=) 19.Nf3 Nb8 (19...e5 20.Be4 Be4 21.Nbd2=) 20.Nh4+= f5 21.Ng6 (21.Be4 fe4 22.Rf8 Bf8 23.Ng6 hg6+=) 21...hg6 22.Be4 fe4 23.Rf8 Kf8 24.Qg4 Kf7 25.Bc3 Nd7 26.Be1 Nf6 27.Qh3 Nh5 28.Na5 e5= 29.g4 Qd7?? 30.Qf1+– Nf6 31.de5 Qg4 32.Kh1 Ke6 33.ef6 Bf6 34.Nc6 d4 35.Nd4 Bd4 36.ed4 e3 37.Qg2 Qf5 38.d5 Kf7 39.Kg1 Kg8 40.d6 Qb1 41.Qe2 (41.Qe2 Qf5 42.c6+–) 1–0. Broza,Antoni – Zarychta,Krzysztof, Poland–chT3 Poland, 2002.

4.c4 e6

5.Qb3 ab4 6.ab4 Ra1 7.Ba1 Qb6 8.b5 d5 9.Bf6 gf6 10.e3 Nd7 11.Nf3 Nc5 12.Qb2 Be7 13.Nc3 0–0 14.d4 Ne4 15.Ne4 de4 16.c5 Qa5 17.Nd2 b6 18.bc6 (18.cb6!? Qb6 19.Ne4+=) 18...bc5= 19.dc5 (19.Qb5 Qa1 20.Qb1 Qb1 21.Nb1 cd4 22.ed4 Rd8–/+) 19...Rd8+= 20.Bc4 (20.c7!? Rd5 21.Bc4 Rc5 22.0–0–/+) 20...Bc5 21.Ke2 Ba6 22.Rc1? (better is 22.Ba6 Qa6 23.Kd1 Qc6 24.Re1–+) 22...Ba3–+ 23.Qa2 (23.Qc2 Bc1 24.Qc1–+) 23...Qh5 (23...Bc1?? 24.Qa5 Rd2 25.Ke1 Bc4 26.c7+–) 24.f3 Bc1 25.Ba6 (25.Ne4 Qh6 26.f4–+) 25...Rd2 26.Qd2 ef3 27.Kf2 Bd2 28.c7 Be3! (28...Be3 29.Ke3 fg2 30.c8Q Kg7–+) 0–1. Klebanov,Andrej (1815) – Coenen,Michael (2260), GER–ch U25 op, 2009.

5.b5 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4).

4.e3 ab4

5.ab4 Ra1

6.Ba1 b5 =.

6.Ba1 Qb6 7.Bf6 ef6 8.f4 (better is 8.c3!?=) 8...Bb4–/+ 9.c3 Be7 10.Nf3 d5 11.Be2 0–0 12.0–0 Qb2 13.Bd3 c5 14.Qc2 Qc2 15.Bc2 b5 16.d4 Bd7 17.Nbd2 Rc8 18.Bb1 b4 19.Rc1 (better is 19.cb4 c4 20.Rc1–+) 19...cd4 20.Nd4 0–1. blackcrowman – PeterRs, ChessWorld.net, 2012.

6.Ba1 d6 7.Bf6 ef6 8.d4 =.

6.Ba1 e6 7.b5 d5 8.c4 Nbd7 9.Nf3 Bd6 10.Be2 Qc7 11.Nc3 e5 12.bc6 bc6 13.cd5 Nd5 14.Ne4 Be7 15.0–0 0–0 16.d4 N5f6 17.Ng3 ed4 18.Nd4 Rd8 19.Qc2 c5 20.Ngf5 Bf8 21.Nb5 Qc6 22.Na7+/– Qe4 23.Bd3 Qg4 24.f3 Qh5+/– 25.Nc8 Rc8 26.g4 Qh3 27.Rf2 Ng4 28.fg4 Qg4 29.Rg2 Qf3 30.Be4 Qh5 31.Ng7 Bg7 32.Bg7 Nf8 33.Bf8 Kf8 34.Bh7 Rc6 35.Rg8 Ke7 36.Bf5 Rd6 37.Qe4 Kf6 38.Bg4 Qe5 39.Qe5 Ke5 40.Re8 Kd5 41.Kf2 Rb6 42.h4 c4 43.Rc8 Rb4 44.h5 c3 45.Bf3 Ke5 46.Rc3 Kf6 47.Rc6 Kg7 48.Kg3 Rb5 49.h6 Kh7 50.Be4 f5 51.Bc2 Kg8 52.Kf4 (52...Rb8 53.Rc7+–) 1–0. Pandurevic,Miro (2260) – Stubljar,Andrej (2070), 24th Open Bled SLO, 2003.

6.Ba1 e6 7.b5 d5 8.Nf3 Nbd7 =.

6.Ba1 e6 7.b5 Be7 8.Nf3 0–0 9.Be2 cb5 10.Bb5 Qa5 (10...d5 11.Ne5=) 11.Nc3 d6 (11...d5 12.Ne5=) 12.0–0 Bd7 13.Bd7 Nbd7 14.Qb1 b6 15.Nb5 Qa8 16.c4 Qc6 17.d3+= Ra8 18.Rc1 h6 19.Nfd4+= Qb7 20.Ne2 Ng4 21.h3 Nge5 22.Bc3 Ng6 23.Qc2 Nh4 24.e4 d5 25.cd5 ed5 26.Bb2 Nc5 27.Nbc3 de4= 28.de4 Bf6 29.Rb1 Ng6 30.Bc1 Ne7 31.Be3 Qc6 32.Nd4 Qd7 33.Nce2 Rc8 34.f4 Na4 35.Qd2 Ng6 36.e5+= ½–½. Ahrens,Wolfgang – Schilling,Hans, compuServe, 1995.

4.e3 e6

5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5 4.b5 c6 5.e3).

5.c3 d5 6.Nf3 Bd6 7.d4 Nbd7 8.Nbd2 0–0 9.Bd3 Re8 10.0–0 e5 11.de5 Ne5 12.Ne5 Be5 13.Qc2 Bh2?? (better is 13...b5=) 14.Kh2+– Qd6 15.Kg1 Re5 16.c4 Rh5 17.Nf3 Bg4 18.c5 Qc7 19.Be5 Qe7?? (19...Re5 20.Ne5 Combination) 20.Bg3?? (20.Bd6 Qd8 21.Ne5 Qe8 22.Ng4 Ng4+–) 20...Qe6?? 21.Ne5 Re5 22.Be5 Qe5 23.Rfe1 Qg5 24.Be2 Bf5 25.Qd1 Ne4 26.Bf3 h5 27.Kf1 Qh4 28.Be4+= Be4 29.f3 Qh1 30.Kf2 Qh4 31.Ke2 Bg6 32.Qd4 Qg3 33.Qf4?? Qg2 (33...Qg2 34.Kd1 Qc2#) 0–1. Deilitz,Manfred – Wallet,Norbert, Ueckermuende op 6th, 2007.

4.Nf3 e6

5.c3 d5 6.e3 Nbd7 7.b5 Bd6 8.c4 0–0 9.d4 Qc7 10.c5+= Be7 11.b6 Qb8 12.a4 Re8 13.Bc3 Bf8 14.Be2 e5 15.Nfd2 ed4 16.ed4 Ne4 17.Ne4 Re4 18.Nd2 Re8 19.Nb3 Nf6 20.0–0 Ne4 21.Ba5 Qf4 22.Bd3 Nf6 23.Bd2+/– Qb8 24.Re1 Bg4 25.Re8 Qe8 26.f3 Bh5 27.a5 Bg6 28.Bg6 hg6 29.Qe1 Qd8 30.Qe2 Ra6 31.Re1 Nh7 32.Bf4 Ra8 33.Bc7 Qd7 34.Qd2 Nf6 35.Qf4 Nh5 36.Qe5 f6 37.Qe6 Qe6 38.Re6 Nf4?? 39.Bf4 (39...Kf7 40.Re3+–) 1–0. touwladder – boa, ChessWorld.net, 2004.

5.c3 d5 6.g3 +=.

5.c3 g6 6.d3 (6.g3 d5=) 6...Bg7 (6...d5 7.Nbd2=) 7.Nbd2 0–0 8.e4 d5 9.Be2 Nbd7 10.0–0 b5 11.Qc2 Nb6 (11...Bb7 12.Nb3=) 12.c4 (12.e5 Nfd7 13.Nd4 Na4 14.Nc6 Qc7 15.Ne7 Kh8 16.Nc8 Be5=) 12...bc4 (12...Bb7 13.Rfe1+=) 13.dc4 Ba6 (13...Bb7 14.ba5 Ra5 15.Rab1+=) 14.Rfd1 (14.ed5 ed5 15.Rfe1 Bc4 16.Bc4 dc4 17.Nc4 ab4=) 14...Qc7 15.Be5 Qc8 (15...Qe7 16.ba5 Nbd7 17.Bc3=) 16.ba5 (16.Ra2 Nc4 17.Bc4 Bc4 18.Nc4 dc4 19.Qc4 ab4 20.Qb4 Qa6=) 16...Nbd7 17.Bd6 Re8 18.e5 (18.Rab1 e5 19.Bf1 Re6+=) 18...Ng4= 19.Qb2 +=. pierre – otux, internet, 2010.

3.ba5 Qa5

4.a3 d5 5.e3 b5 6.Nf3 Nf6 7.Be2 Qa4 8.0–0 Qg4 9.Ne5 Qa4 10.Nc3 Qh4 11.Nf3 Qh6 12.a4 b4 13.Nb1 Bg4 14.Bf6 (14.a5 e6=) 14...ef6 (14...Qf6 15.d4=) 15.c3 Bd6 16.g3 (16.h3 Bf3 17.Bf3 Na6=) 16...Bh3 (16...0–0 17.cb4 Bb4 18.Qb3=+) 17.Re1= Nd7 (17...Na6 18.Nd4 c5 19.Nb5=) 18.Qb3 Rb8 19.a5 Nc5 20.Qc2 (20.Qb2!? bc3 21.Qc3=) 20...b3=+ 21.Qb2 Ne6 (21...Qg6!?=) 22.a6 0–0 23.Nd4 (23.d4!?+=) 23...Nd4 (23...Rb6 24.c4=+) 24.ed4 Rb6 25.a7 (25.c4 dc4 26.Bc4 Qh5=+) 25...Ra8 26.c4 Rb4 (better is 26...dc4!? 27.Na3 Ba3 (27...Ra7? 28.Nc4 Ra1 29.Ra1+–) 28.Ra3 Be6=+) 27.cd5= cd5 (27...Qg5 28.Nc3+= (< 28.dc6 Qd5 29.f3 Qc6=)) 28.Nc3 Rd4? (28...Rb7 29.Nb5 Bf8 30.Qb3+/–) 29.Bf3?? (better is 29.Qb3 Qd2 30.Red1+–) 29...Rd2?? (29...Be6 30.Nd5 Rd2 (30...Qd2? 31.Qd2 Rd2 32.Nf6 gf6 33.Ba8+–) 31.Qb3 Rf2 32.Kf2 Qh2 33.Ke3 Bc5 34.Kd3 Qg3+/–) 30.Qb3+– Bc5 (30...g6 31.Qb7 Qf8 32.Nd5 Kg7+–) 31.Qb8!! (31...Bf8 32.Qa8+–) 1–0. Bonetti,Shane – Sigma, 1998.

4.Bc3 Qd5 5.a3 (5.a4 b5 –+) 5...e5. Aasum.

4.Nc3 b5 5.a3 (5.Nf3 b4 6.Ne4 d5 idea f6) 5...e5 6.Ne4 (6.Nf3 f6 unclear) 6...f5 (6...d5!; 6...Ba3? 7.Nd6 +/–) 7.Ng3 f4 8.Ne4 d5 9.Nc3 Ba3? (9...Bc5!?) 10.Ra3 +/–. Aasum.

4.c4 Na6 5.Nf3 Nf6 6.e3 d6 7.Be2 Nc5 8.Qc2 Qa4 9.Qa4 Na4 10.Bf6 gf6 11.d4 Rg8 12.g3 Bg7 13.Nbd2 f5 14.Bd3 c5 15.0–0 cd4 16.Nd4 Bd7 17.Nf5 Ba1 18.Ra1 Nc5 19.Bc2 h5 20.h4 Ba4 21.Nd4 Bc2 22.Nc2 f5 23.Nd4 e6 24.Nb5 Kd7 25.Kf1 Rgc8 26.a3 Na4 27.Ke1 Nb6 28.Rc1 Ra4 29.c5 Rc5 30.Rc5 (30.Rb1 Nd5 31.Nd4–+) 30...dc5 31.Kd1 Ra5 32.Nc3 Ra3 33.Kc2 Nd5 34.Ndb1 Ra5 35.Kd3 Nc3 36.Nc3 Kc6 37.Kc4 b5 38.Kb3 b4 39.Ne2 Ra3 40.Kb2 e5 41.Nc1 Kd5 0–1. combijack (1920) – karelploeger (1835), gameknot.com, 2013.

4.c4 Qb4 5.Qb3 Qb3 6.ab3 Ra1 7.Ba1 d6 8.f4 Bf5 9.d3 f6 (9...d5 10.Nf3=) 10.Nf3 (10.e4 Bg6+=) 10...e5= 11.fe5 (11.e4 Bg4=) 11...de5 12.e4 Bg4 (12...Bb4 13.Nbd2 Bg4 14.Ne5+/–) 13.Bc3 Nh6 14.Be2 Bc5 (14...Na6 15.d4 ed4 16.Nd4=) 15.b4 Ba7 (15...Be3 16.h3 Bd7 17.d4 ed4 18.Nd4+=) 16.Nbd2 (16.Rf1 Nd7+=) 16...Nd7 (16...Na6 17.h3 Bd7 18.Nb3+=) 17.h3 (17.c5 b6 18.b5 cb5+=) 17...Be6 18.Nb3 (18.d4 ed4 19.Nd4+=) 18...b6 (18...Nf7!?+=) 19.d4+/– Bb8 20.d5 (20.Bd2 Bf7+/–) 20...cd5 21.cd5 (21.ed5 Bf7 22.g4 b5=) 21...Bf7 22.Bb5 (22.Kf2 f5 23.Rd1 Ke7+=) 22...Bg6 23.Nbd2 Ke7 24.Ke2 (24.Nh4 Bh5+/–) 24...Rc8+= 25.Bc6 Nf7 (25...f5 26.Nc4+=) 26.Nh4+/– Nd8 (26...Nf8 27.Ng6 Ng6 28.g3+/–) 27.Ng6 hg6 28.b5 Nc5 29.Ke3 Na4 (29...f5 30.Ra1+/–) 30.Bb4+– Bd6 31.Bd6 Kd6 ½–½. Negroni,Giovanni – Van Esbroeck,Dirk, corr ICCF TT–4–90–14, 1993.

4.e3 b5 5.c4 bc4 6.Bc4 Qb4 (6...Ba6 7.Bc3 Qf5 8.d3=) 7.Bb3 Ba6 8.a3 Qb5 (8...Qa5 9.Ne2=) 9.Nf3 Nf6 10.d4 d5 11.a4 Qb7 12.Nbd2 e6 13.h3 (13.Rb1 Bd6=+) 13...Bb4 14.Ra2 (14.Ba3!?=+) 14...Ne4–/+ 15.Qc2 (15.a5!?–/+) 15...Nd7 16.Ba3 Ba5 17.Rb2 Qc7 18.Rb1 (18.Ba2 c5–+) 18...Ndf6 (18...c5 19.g3–+) 19.Ra1 (better is 19.Ba2!?–/+) 19...Rb8 20.Ba2 Nd2 21.Nd2 Ne4 22.Bc1 0–0 23.Rb1 Rb1 24.Bb1 Rb8 25.Ba2 f5 (better is 25...Qd8 26.g3 Qf6–+) 26.g4 (26.f4–+) 26...f4 27.Rg1 (27.Bb1–+) 27...fe3 28.fe3 Qh2 (29.Bc4 Bc4 30.Qc4 Bd2 31.Kd1 Qg1 32.Ke2 Qe1 33.Kd3 Nf2 34.Kc2 Qc1#) 0–1. Bonetti,Shane – muysal01 (1720), ICC, 2002.

4.e3 Qb6 5.Qc1 d5 6.c4 dc4 7.Bc4 Nf6 8.Nf3 Bg4 9.Ne5 Bh5 10.0–0 e6 11.d4 Nbd7 12.Nd7 Nd7 13.Nd2 Bg6 14.e4 Bd6 15.Re1 0–0 16.Rb1 Qc7 17.h3 Bf4 18.a3 Nf6 19.Bd3 Qa5 20.Bc3 Qa3 21.Qc2 Rfb8 22.Nc4 Qe7 23.Nb6 Ra7 24.g3 Bc7 25.Bb4 Qd8 26.Bc5 Ra5 27.Qc3 Rb5 28.Bb5 Ne4 29.Re4 cb5 30.Re6 Bb1 31.Re1 Bb6 32.Bb6 Qb6 33.Qe3 Qc6 34.Rb1 Rd8 35.Qe5 h6 36.Qb5 Rd4 37.Qc6 bc6 38.Rc1 Rd6 39.f4 Kf8 40.Kf2 Ke7 41.Rc5 Kd7 42.Ra5 g6 43.g4 Rd2 44.Kf3 Rd3 45.Kg2 Ke6 46.Ra8 h5 47.Re8 Kd7 48.Rf8 hg4 49.hg4 Ke7 50.Rc8 Rd6 0–1. Malmstroem – Thystrup, corr 3GMM½–09 1997–99.

4.e4 Qb4 5.Qc1 (5.Bc1 Qe4 6.Ne2 d5–/+) 5...Qe4–/+ 6.Ne2 Nf6 (6...e5 7.Nbc3 Qh4 8.g3–/+) 7.d3 (7.Nbc3 Qe6=+) 7...Qb4 (7...Qe6 8.c4–/+) 8.Bc3 Qb5 (8...Qa4 9.Bd4–/+) 9.Nd4 (9.Qd2 d5–/+) 9...Qd5 10.Qe3 (10.a4 e5 11.Nf5 d6–/+) 10...Ra2–+ 11.Be2?? (better is 11.Nd2–+) 11...Ra1 12.Ba1 Qa2 13.0–0 Qa1 14.Nd2 Qa5 15.Nc4 Qc7 16.Nf5 e6 17.Ra1 Nd5 18.Qe4 b5 19.Nd2 Bb4 20.Nb3 Bc3 21.Rb1 Be5 22.Ng3 Nc3 (23.Qb4 Na6–+) 0–1. ismaelarango – albatroz (1830), internet, 2005.

4.e4 d5 5.ed5 cd5 6.Nf3 Nc6 7.Be2 Nf6 8.0–0 Bg4 9.d3 e6 10.Nbd2 Be7 11.Nb3 Qc7 12.h3 Bh5 13.Nfd4 Be2 14.Qe2 Nd4 15.Nd4 0–0 16.a4 Ra6 17.Nb5 Qd7 18.c4 Rfa8 19.Qc2 Qc6 20.Rfc1 dc4 21.Qc4 Qc4 22.Rc4 Rc6 23.Nd4 Rc4 24.dc4 Kf8 25.Nb5 Ke8 26.Nc7 1–0. bratek55 (1605) – beginner2011 (1725), kurnik, 2012.

4.Nf3 Na6 5.Nc3 h6 6.g3 b5 7.a3 Nc5 8.Bg2 Na4 9.Na4 Qa4 10.0–0 h5 11.e4 h4 (11...e6 12.e5+=) 12.Nh4+/– Rh4 (better is 12...e6!?+/–) 13.gh4+– d6 14.Re1 Be6 15.Rc1 Nh6 16.d4 Bg4 17.Qd3 Rc8 (17...Bd7 18.Bf3+–) 18.c4 bc4 19.Rc4 Qa6 20.Qb3 Bd7 (20...Qa7 21.Rb4+–) 21.Ra4 Qb5 22.Qb5 cb5 23.Ra7 f6 24.Rc1 Rc1 25.Bc1 Nf7 (25...e5 26.Bb2+–) 26.Bf3 Nd8 (26...Nh8+–) 27.Bh5 Nf7 28.Ra8 Bc8 29.Rc8 Kd7 30.Rf8 Nd8 31.Bg4 Kc7 32.Re8 Nc6 33.d5 Ne5 34.Re7 Kb6 35.Be3 Ka6 (35...Ka5 36.Ra7) 36.Ra7 1–0. usingprogram (2045) – stupcat (1695), kurnik, 2011.

4.Nc3 d5

5.e3 e5 6.Nge2 Bd6 7.g3 Be6 8.Bg2 Ne7 9.0–0 0–0 10.d3 Nd7 11.Qd2 b5 12.a3 Nc5 13.Rfd1 Na4 14.Na4 Qa4 15.e4 d4 16.f4 (withdraw, 0–1). Chatterjee – Myrberg, email 4AMM–F 1998.

5.Nf3 e5! 6.e3 Bd6 7.Be2 Nf6 8.0–0 0–0 9.h3 Qc7 10.d3 (10.d4) 10...Nbd7 11.a3? b5! 12.Re1 Nb6 13.Qd2 Rd8 14.e4 de4 15.Ne4 Ne4 16.de4 Be6 (16...Ba3 17.Be5!) 17.Qg5 f6 18.Qe3 Na4 19.Qc1 Qa7 20.Rd1 Bc5 21.Rf1 Bf7 22.Qb1 Nb2 23.Qb2 Ba3 24.Qc3 Qc5 25.Qc5 Bc5 26.Ra8 Ra8 27.Rd1 Kf8 28.Rd7 Ra1 29.Rd1 Rd1 30.Bd1 Bg6 31.Ne1 Be4 0–1. Gross,Gerald – Zemitis,Val, email b4–01–03 (Zemitis), 2001.

4.Nc3 Nf6

5.a3 e5 6.Nf3 +=.

5.a3 e6 6.g3 (6.e3!?=) 6...Be7 7.Bg2 0–0 8.Nf3 d5 9.e3 Nbd7 10.0–0 e5 11.Ne2 Qc7 12.d3 h6 13.Nd2 b6 14.c4 Bb7 15.Nf3 Ra7 16.cd5 cd5 17.d4 e4 18.Nd2 Rfa8 19.Rc1 Qd8 20.Nb1 Ba6 21.Rc3 Rc8 22.Rb3 Bc4 23.Rc3 Be2 (better is 23...b5!?–/+) 24.Qe2= Rc3 25.Nc3 Ba3 (better is 25...Qf8!?=) 26.Nb5+/– Ra5? (better is 26...Bb2 27.Na7 Ba3+/–) 27.Ba3+– Qa8 28.Be7 Qa6 (28...Ra2 29.Qd1+–) 29.Rb1 Ne8 30.Bh3 Nf8 (30...Nef6 31.Qb2+–) 31.Bf8 Kf8 32.Kf1 (32.Qb2!? Qb7+–) 32...Ke7 33.Qb2?? (better is 33.Kg2 Kf8 34.Qb2+–) 33...Nd6+= 34.Kg1 Qb5 35.Qb5 Rb5–+ 36.Ra1 Ra5 37.Rc1 Nc4 38.Bf1 b5 39.Rb1 f5 40.Kg2 g6 41.h3 Kd6 42.Be2 h5 43.h4 Kc6 44.Bf1 Ra4 45.Be2 b4?? 46.Bd1 b3 47.Rb3 Ra1 48.Be2 Ra2 49.Kf1?? Nd2–+ (49...Nd2 50.Kg2 Nb3–+) 0–1. Knightprancer – Hal1958, playchess.de, 2006.

5.d4 Ne4 6.Qd3 Qb4 7.f3?? (better is 7.Rd1 d5 8.f3–+) 7...Qb2 8.Rb1 (8.Nd1 Qa1 9.Qe4 d5–+) 8…Qc3 (9.Qc3 Nc3–+) 0–1. oasis – smurilo (1815), chessHere.com, 2006.

5.e3 d5 6.Be2 e5–/+ 7.Nf3 Bd6 8.0–0 Nbd7 9.h3 Nf8 (9...0–0 10.a4–/+) 10.d4 e4 11.Nd2 g5 (better is 11...Ng6–/+) 12.g4?? (better is 12.f3 ef3 13.Rf3=) 12...h5–+ 13.a4 (13.Nce4 Ne4 (< 13...de4 14.d5 Rh6 15.Bf6 Rf6 16.Ne4–+) 14.Ne4 de4–+) 13...Qc7 14.Re1 hg4 15.hg4 Ng6 16.Ba3 Bh2 17.Kf1 Rh4 18.f3 ef3 19.Bf3–+ Ng4 20.Bg4 Bg4 21.Qb1 Qg3 (22.Nd5 Qg1#) 0–1. C_Artist_Think – C_D_B7, chessHere.com, 2006.

5.e3 d5 6.f4 Bf5 7.Nf3 e6 8.Ne5 Nbd7 9.Bd3 (better is 9.g4 Bg6 10.Ng6 hg6 11.Rb1=) 9...Bg4?? (9...Ne5 10.Bf5 Nc4–+ (10...ef5?! 11.fe5 Ne4 12.0–0=+)) 10.Ng4+– Be7 11.Nf6 Nf6 12.0–0 0–0 13.Qf3 Ba3 14.Ba3 Qa3 15.e4 d4 16.e5 (16.Ne2!? Rfd8+–) 16...dc3 17.ef6 g6 18.Qh3 h5 (18...Qa7 19.Kh1 Qd4 20.dc3 Qf6 21.Rab1+–) 19.Qe3 cd2 20.f5 Qa7 21.Qa7 Ra7 22.fg6 fg6 23.Bg6 Ra4 24.Bh5 Rh4 (24...Rd8 25.Kf2+–) 25.g4 e5 (25...Rd8 26.Rad1 Kf8 27.Rf2 Rh5 28.gh5+–) 26.Kg2 (26.f7 Kg7+–) 26...e4 27.Kg3 Rh5 28.gh5 e3 29.Kf3 Rf6 (29...Re8 30.Ke2 Re5 31.f7 Kf8 32.Rf6 Rh5 33.Rg1 Rh2 34.Ke3+–) 30.Ke2 (30.Ke3 Rd6+–) 30...Rh6 (30...Re6 31.Rf3+–) 31.Ke3 Rh5 32.Rf2 (32...b5 33.Kd2 Rd5 34.Ke3 Re5 35.Kd3+–) 1–0. JF_ – boa, Chessworld.net, 2004.

5.e3 e5 6.Nf3 e4 7.Nd4 d5 8.Nb3 Qc7 9.Be2 (9.Rb1 Bd6=+) 9...Bd6 10.d3 0–0 (< 10...Bh2 11.g3 Bg3 12.fg3 Qg3 13.Kd2=) 11.a4 (11.de4 de4 12.Qd4 Bf5–/+) 11...b6–/+ (< 11...Bh2 12.g3 Bg3 13.fg3+=) 12.de4 de4 13.a5 ba5 14.Na5 (14.Ra5 Ra5 15.Na5 Be6–/+) 14...Bh2 (14...Rd8 15.Nc4 Ra1 16.Qa1=+) 15.Nc4=+ Ba6 (15...Ra1 16.Qa1 Bd6 17.Nd6 Qd6 18.Qa4=+) 16.Ra5 (16.g3 Rd8 17.Qb1 Bg3 18.fg3 Qg3 19.Kf1 Bc4 20.Ra8 Ng4 21.Nd1 Rd1 22.Qd1 Ne3) 16...Nbd7 (16...Rd8 17.Qa1 Kh8 18.Nd2 Rd2 19.Kd2+–) 17.Qa1 (17.g3 Bc4 18.Ra8 Ra8 19.Bc4 Bg3 20.fg3 Qg3 21.Kf1 Ra5 22.Bf7 Kf7 23.Ne4 Rf5 (23...Ne4 24.Qd7 Kg6 25.Qg7 Kf5 26.Qh7 Ke6 27.Rh6 Kd5 28.Qf7 Kc5 29.Bd4 Kb5 30.Qb7 Ka4 31.Qb3) 24.Ke2 Qg2 25.Kd3 Rd5 26.Bd4 Ne5 (26...Qe4 27.Kd2 c5 28.c4–+; < 26...Ne4 27.Qf1 Nf2 28.Ke2 Qh1 29.Qf2 Ke8 30.c4–+) 27.Kc3 Ne4 28.Kb3 Nf3–+) 17...Bb7 (17...Qb7!? 18.Ba3 Bc7–/+) 18.g3= Ne5 19.Ra8 Ra8 20.Na3 Neg4 21.Nd1 (21.Ne4 Ne4 22.Bg4 Bg3 23.0–0–+) 21...Qa5 22.Kf1 (22.Nc3 Ba6=+) 22...Qh5 (22...Ba6 23.c4 Bc8 24.Kg2=+) 23.Kg2 Bc8 (24.Bf6 Ne3 25.fe3 Qh3 26.Kf2 Qg3 27.Kf1 Bh3#) 0–1. Woschkat,Karl_Heinz – Schopf,Martin, compuserve casual, 1996.

5.e3 e5 6.Nf3 e4 7.Nd4 d5 8.f3 Bc5 (8...Bd6 9.Be2+=) 9.fe4 Bd4 (worse is 9...Ne4 10.Ne4 de4 11.Nb3+–) 10.ed4 Ne4 11.Ne4 de4 12.Qe2 (12.Bc4 Qb4 13.Bb3 Be6=) 12...Bf5 13.g3 (13.Qe3 Qd5=) 13...0–0 14.Bg2 Nd7 15.0–0 (15.Be4?? Be4 16.0–0 Bc2–+) 15...Rae8 (better is 15...Nf6=) 16.Rf5?? (better is 16.Bc3 Qd5 17.Qf2+=) 16...Qf5–/+ 17.Rf1 (17.Ba3 c5–/+) 17...Qg6 (17...Qa5 18.a3–+) 18.Rf4 Nf6 19.Qf2? Ng4 20.Qe2 h5?? 21.Be4? f5 22.Qc4+= Kh8 23.Bg2 Re1 24.Rf1 Rfe8 25.Qd3 Rf1 26.Bf1 h4! 27.Kg2 h3 28.Kg1–/+ Re1 29.Qc3?? f4 30.d3?? Qe6 31.Qd2 f3 32.d5 Qe8 (32...Qe8 33.Bd4 Qe2 34.Qh6 Nh6 35.Bg7 Kg7 36.dc6 Qf1; 32...Qe2 33.Qh6 Nh6 34.Bg7 Kg7 35.dc6 Qf1) 0–1. Fournier,Frederic (1980) – ksman(C), Active (5/0), 2004.

5.e3 e5 6.Nf3 Be7 7.Be2 0–0 8.0–0 d6 9.d3 Nbd7 10.Qd2 b5 11.a3 d5 12.Rfd1 (12.a4 b4 13.Nb1 Bd6=+) 12...Bd6–/+ 13.Nb1 (13.a4 b4 14.Nb1 Re8–/+) 13...Qc7 14.h3 Nc5 15.e4 (better is 15.Nc3!?–/+) 15...de4 16.de4 (16.Ne5 Be5 17.Be5 Qe5–/+) 16...Nce4 17.Qe3 (better is 17.Qe1–+) 17...Bc5 18.Be5 Be3 19.Bc7 Nf2 (19...Bf2?! 20.Kh2–+) 20.Rf1 Nh3 21.Kh1 (21.Kh2 Nf4 22.Nc3 Re8–+) 21...Nf2 22.Kg1 Re8 23.Rf2 Ng4 24.Bg3 Bf2 25.Bf2 Re2 26.Bc5 Rc2 27.Bb4 Rc1 28.Be1 Bf5 29.Ra2 Re8 30.Kf1 Bd3 31.Kg1 Ree1 (32.Ne1 Re1; 31...Rce1 32.Ne1 Re1) 0–1. wlittle (2175) – kasimzhanov (2000), net–chess.com, 2004.

5.Nf3 d5 6.e3 Bg4 7.Be2 Nbd7 8.0–0 Bf3 (8...e5 9.h3 Bf5 10.a3=+) 9.Bf3 (< 9.gf3 e5–/+) 9...e5 10.d4 e4 11.Bg4 (11.Be2 Bb4 12.Qd2 0–0=+) 11...Bd6 (11...Ng4 12.Qg4 Nb6 13.Qg3–/+) 12.Bd7 Kd7 13.f3 ef3 14.Qf3 Rhe8 15.Qf5 Kc7 (15...Ke7 16.Qg5 Qc7 17.Qg7 Bh2 18.Kh1=+) 16.Qg5=+ Re3?? (better is 16...Bf8=+) 17.Qe3 (better is 17.Rf6 gf6 18.Qe3 f5+–) 17...Re8 (17...Bh2 18.Kh1 Bd6+–) 18.Qg5 Qb4 19.Nd1 Ne4 (19...Qb5 20.g3 Bf8+–) 20.Qg7 1–0. fraus (2270) – rbeckett (2210), net–chess.com, 2003.

5.Nf3 e5 6.e3 e4 7.Nd4 d5 8.Be2 Bb4 9.0–0 Qc7 10.f3 ef3 11.Rf3 0–0 12.Qf1 Bd6 13.Rf6 gf6 (13...Bh2? 14.Kh1+–) 14.Qf6 Bh2 15.Kh1 Be5 16.Qg5 Bg7 17.Nc6 Qc6 18.Nd5 f6 19.Rf1 Nd7 (19...fg5?? 20.Ne7 Kh8 21.Rf8#) 20.Bf6 Nf6 21.Ne7 Kh8 22.Nc6 bc6 23.Bc4 Bd7 24.Kg1 Rae8 25.a4 Ng4 (25...h6 26.Qc5 Bg4+–) 26.a5 Ne5 27.Be2 Rf1 28.Bf1 c5 29.a6 Bc6 (29...c4 30.Be2 h6 31.Qh4+–) 30.Be2 c4 31.a7 h6 32.Qh4 Bd5 (32...Rg8 33.Kh1 (33.Bc4 Nf3 34.gf3 Bf6 35.Qg4 Rg4 36.fg4 Bd8+=) 33...Ra8 34.Qe7+–) 33.d4 cd3 34.cd3 Ba8 35.Qa4 Re7 (35...Nc6 36.Bf3 Re3+–) 36.Qa6 Bf8 (36...Rf7+–) 37.d4 Rg7 (37...Nc6 38.Qc8 Kg7 39.Qa8 Na7+–) 38.de5 Rg2 39.Kf1 Rh2 40.Qf6 (40.Qf6 Kh7 41.Qf7 Bg7 42.Bd3 Be4 43.Be4 Kh8 44.a8Q Bf8 45.Qaf8#) 1–0. Janek – Ivair, internet, 2016.

5.Nf3 g6 6.e4 (6.Ne4 Bg7+=) 6...d6= 7.Bd3 Bg7 8.0–0 0–0 9.Re1 Nbd7 10.Ne2 Nc5 11.Bc3 (11.Nc1 Qb6 12.Bd4 e5=+) 11...Qc7 (11...Qa4 12.Bd4–/+) 12.Ng3=+ White prepares the advance e5 12...Nd3 13.cd3 Be6 14.e5 (14.a4!?=+) 14...de5–/+ 15.Be5 Qd7 16.d4 (16.Qc2 Qd5–/+) 16...Rfd8 (16...Ba2 17.d3–+) 17.a4 Bd5 18.d3 Ra6 (18...Qg4 19.Bf6 Bf6 20.Ne4–/+) 19.Ne4 Rda8 (19...b6 20.Qd2–/+) 20.Nc3 (better is 20.Nc5 Qg4 21.Na6 Bf3 22.Qf3 Qf3 23.gf3 Ra6 24.Reb1+/–) 20...e6 21.Rb1 (21.Ng5 Ne8 22.Bg7 Kg7=+) 21...R8a7 (21...Bf3 22.Qf3 Nd5 23.Nd5 cd5 24.Rec1–/+) 22.h3 (22.Nd2 Ne8=+) 22...Nh5 (22...Qd8 23.Nd2–/+) 23.Nd5 ed5 24.Bg7 Kg7 25.Ne5 Nf4?? (better is 25...Qd6=+) 26.Nd7+– 1–0. DanielMena – kehrsam, ChessWorld.net, 2006.

5.g3 d5 6.Bg2 (6.Nf3!?=) 6...e5=+ 7.Nf3 Bd6 8.0–0 0–0 9.e3 e4 10.Nd4 Bg4 (10...c5!? 11.Nb3 Qb6=+) 11.f3= ef3 12.Bf3 Bh3 13.Rf2 Nbd7 14.Qe2 (14.Rb1 Rfe8=) 14...Ne5=+ 15.Bg2 Bg2 16.Rg2 Nc4 17.Rb1 Bb4 18.Nb3 Qc7 (18...Qd8 19.Rf2–/+) 19.Qf3 (19.Qd3 Nb2 20.Rb2 Qe5=+) 19...Nb2 20.Rb2 Bc3 21.dc3 Rfe8 22.Kh1 (22.c4 Qe5 23.Nd4 c5–+) 22...Qb6 (22...Ne4 23.c4 dc4 24.Nd4–+) 23.Qf4 (23.Re2–+) 23...Re4 24.Qc7?? (24.Qf5–+) 24...Qc7 (25.Nc5 Re3 26.Rb7 Qd6–+) 0–1. Lang,L – Knorr,B, corr SOK–92–92, 1992.

5.g3 e5 6.Nf3 =+.

4.c4 d6

5.Bc3 Qa4 6.Qa4 Ra4 =.

5.e3 Nf6 6.Nf3 e5 7.Be2 Be7 8.0–0 0–0 9.Qb3 Nbd7 10.d4 e4 11.Nfd2 Re8 (11...Nb6 12.Nc3 Bf5 13.a4=) 12.Nc3+= Bf8 13.Qc2 Nb6 14.Nce4 (14.a4 Be6+=) 14...Ne4= 15.Ne4 Re4?? (better is 15...Qa4 16.Qd3 Qc4 17.Qc4 Nc4 18.Bc4 Re4=) 16.Qe4+– Qd2 17.Qd3 Qb2 (17...Nc4 18.Qd2 Nd2+–) 18.Rfb1 Qa3 19.Qa3 Ra3 20.Rb6 1–0. Cernik,Lukas – Kovar,Vojtech (2105), CZE–ch /20 U18, 2000.

5.Nf3 Nd7 6.e3= Ngf6 7.Be2 e5 8.0–0 Be7 9.Nc3 0–0 10.Qc2 Re8 11.d3 Bf8 12.Nd2 Nc5 13.Nb3 Qa7 14.a4 Nb3 15.Qb3 Be6 16.a5 Nd7 17.Rfb1 Reb8 18.Qc2 Qc5 19.Ne4+= Qa7 20.Nc3 Qc5= 21.d4 ed4 22.Ne4 Qf5=+ 23.Bd3 Ne5–/+ 24.Rd1 de3 25.fe3 Nd3 26.Qd3 Rd8 27.Rf1 Qg6 28.Rf6 gf6 29.Nf6 Kh8 30.Qc3?? Bg7 31.Rf1 d5 32.Qe5 dc4 33.h4 Rd2 (34.g4 Bg4–+) 0–1. Sopur,Lech (2265) – Zawadzki,Stanislaw (2360), Poland–ch sf U20, 2003.

5.Nf3 e5 6.Bc3 Qa4 7.Qb3 =+.

5.e3 e5

6.Bc3 Qa4 =.

6.Nf3 Nd7 7.Be2 e4 8.Bc3 Qa4 9.Qa4 Ra4 10.Ng5 =.

6.Nf3 Nd7 7.Be2 e4 8.Nd4 =.

6.Nf3 Nd7 7.Be2 g6 8.0–0+= Bg7 9.Qc2 Ne7 10.d4 0–0 11.Nc3 f5 12.Rfd1 h6 13.Qb3 e4 14.Nd2 d5 15.cd5+= cd5 16.Bb5 Nf6 17.a4 Be6 18.Ba3 Rf7 19.Bb4 Qd8 20.Rdc1 g5 21.Ne2 Ng6 22.Nc3 Ng4 Black prepares f4 23.h3 Nf2? 24.Kf2+/– f4 25.Kg1 fe3 26.Nde4 Nf4 27.Nd6+– g4 28.Nf7 Qh4 29.Ne4 Bd4 30.Be1 Nh3 31.Kf1 Nf2 32.Bf2 Qh1 33.Bg1 Rf8 34.Rc7 Bf7–/+ 35.Nf6 Bf6 36.Rd1 Be6 (37.Bd7 Bd8 38.Ke2 Qg2 39.Kd3 Qe4 40.Kc3 Bf6 41.Rd4 Qd4 42.Kc2 Bd7 43.Be3 Qe4 44.Kc1 Qh1 45.Kc2 Qh2 46.Kd1 Qc7 47.Qd5 Kg7–+) 0–1. Andersson,Erik – Wesslen,Ulf, corr SSKK 2–43, 1985.

6.Nf3 Nd7 7.Be2 g6 8.0–0+= Bg7 9.Nc3 Ne7 10.Ne4 Nf5 Black gets the initiative 11.g4 d5=+ 12.cd5 cd5 13.Neg5 Qb4–/+ 14.gf5 Qb2 15.fg6 hg6 16.e4 Nc5 17.ed5 e4 18.Rb1 Qf6 19.Qc2 ef3 20.Nf3 Qd6 21.Bb5 Kf8 22.Rfe1 Bg4 (23.d4 Bd4–+) 0–1. Sternik,Ryszard – Bendig,Frank, corr SOK–91–75, 1991.

6.Nf3 Nf6 7.Nc3 Be7 8.Qc2 Bg4 9.Be2 Nbd7 10.h3 Bh5 11.0–0 d5 12.d3 0–0 13.g4 Bg6 14.Nh4 (14.g5 Ne8 15.cd5 cd5=+) 14...Nb6 15.Ng6 fg6 16.cd5 cd5 17.Qb3 Nfd7 18.d4 ed4 19.ed4 Bf6 (19...Rf4 20.Nb5 Rc8 21.Bc3=) 20.Nb5 Qa4 21.Bd1 Rfc8 22.Bc3 Qc4 23.Qc4 Nc4 24.Bf3 Ndb6 25.Bb4 Ra4 26.Rfb1 Rc6 27.Bg2 Kh8 28.a3 h6 29.Ra2 Ra8 30.a4 Rd8 31.Bc5 Nc8 32.Re2 Kh7 33.Rbe1 Rd7 34.Re8 N8b6 35.a5 Na4 36.Be7 Na5 37.Bf6 Rf6 38.g5 hg5 39.Ra1 Ra6 40.Ra4 Nc6 41.Ra6 ba6 42.Nc3 Nd4 43.Bd5 g4 44.hg4 g5 45.Ra8 Rd6 46.Bb7 Rb6 47.Ba6 Rb3 48.Ne4 Nf3 49.Kg2 Nh4 50.Kf1 Kh6 51.Bc4 Rb1 52.Ke2 Rb2 53.Kd3 Nf3 54.Ra6 g6 55.Ra7 Ne5 56.Kc3 Rf2 57.Nf2 Nc4 58.Kd4 Nd6 59.Ke5 Ne4 60.Ra2 (60...Nf2 61.Rf2 Kg7 62.Ke6 Kg8 63.Rf7 Kh8 64.Kf6 Kg8 65.Rd7 Kh8 66.Kg6 Kg8 67.Rd8#; 60.Ke4?!=; 60.Ne4?!=) 1–0. Bott,Martin – Rosemann,Hans_Joachim, BdF HS–002 remoteschach.de, 2003.

6.Nf3 Nf6 7.Be2 =.

4.c4 e5

5.Nc3 Nf6 6.d3? d5–+ 7.cd5 cd5 8.d4 Ne4 9.Rc1 Bb4 10.Qd3 Nc6 11.e3 ed4 12.ed4 Qa2 13.Qc2 Nd4 14.Bb5 Bd7 15.Bd7 Kd7 16.Qd1 Bc3 17.Rc3 Qb2 (18.Ne2 Nc3–+) 0–1. Sawamura,Tetsushi – Azuma,Noriyuki, JPN op3 email, 2001.

5.Nc3 Nf6 6.e3 Ba3 7.Ba3 Qa3 8.Nf3 d6 9.Be2 0–0 10.0–0 Bf5 11.Nh4 Be6 12.Qb3 Qb3 13.ab3 Nbd7 14.d3 c5 (14...Nc5 15.b4 Nb3 16.Ra8 Ra8 17.Nf3+=) 15.Nb5 ½–½. Morgenstern,Frank (1735) – Von Bassewitz,Ingo (1805), Blankenburg op–A, 2005.

5.Nc3 Nf6 6.e3 Bc5 7.Qc2 0–0 8.Nge2 Re8 9.Nc1 Bf8 10.Nb3 Qd8 11.Be2 d5 12.d4 (12.cd5 cd5 13.d4 Bd6=) 12...ed4 (12...dc4!? 13.Bc4 ed4=+) 13.Nd4=+ dc4 14.Bc4?? (better is 14.Rd1=) 14…Qd4–+ (15.Nd5 Qe4 16.Nf6 gf6 17.Qe4 Bb4 18.Ke2 Re4–+) 0–1. Berlacki,Piotr (1860) – Touzane,Olivier (2320), Orange op, 1994.

5.Nc3 Nf6 6.Nf3!? =+.

5.e3 f6 6.Nf3 g6 7.Be2 Ne7 8.0–0 Bg7 9.d4 e4 10.Nfd2 f5 11.Nb3 Qb6 12.Nc3 0–0 13.Qc2 Na6 14.a3 Qc7 15.Rfd1 d6 16.d5 c5 17.Nb5 Qd8 18.Bg7 Kg7 19.f3 ef3 20.Bf3 Nc7 21.Nc3 Bd7 22.a4 Na6 23.Nb5 Bb5 24.ab5 Nb4 25.Qc3 Kh6 26.e4 fe4 27.Be4 Nf5 28.Ra8 Qa8 29.g4 Nd4 30.Nd4 Rf4 31.g5 Kh5 32.Ne6 Rg4 33.Bg2 Qa2 34.Qh3 Rh4 35.Bf3 1–0. marvis (1740) – doctore78 (1620), playok.com, 2012.

5.e3 Nf6 6.Nf3 d6 7.Bc3 Qc7 8.d3 Be7 9.Be2 0–0 10.0–0 Nbd7 11.Nbd2 d5 Black intends e4 12.Qc2 c5 (12...b6 13.Bb2=+) 13.d4 (13.Bb2 d4 14.Rfb1 Rd8=+) 13...e4=+ 14.Ne5 Bd6 15.f4 ef3 16.Ndf3 Nb6 (16...Ne4 17.cd5 cd4 18.Qe4 dc3 19.Nc4=+) 17.a4 dc4 18.Nc4 (18.a5 Nbd5 19.Nc4 Ng4 20.Nd6 Qd6=+) 18...Nc4=+ 19.Bc4 Ng4 (better is 19...cd4!? 20.Bd4 Be6=) 20.Ng5+/– Do you see the mate threat? 20...Bh2 21.Kh1 g6 22.Rf7 Rf7 23.Rf1 (23.Nf7 Kf8 24.dc5 Ne3 25.Bg7 Kg7 26.Qc3 Kf8 27.Qe3+/–) 23...Bf5?? (better is 23...Bg1! 24.Bf7 Kg7 25.dc5 Kh6=) 24.Rf5!+– gf5 25.Qf5 Kg7 (25...Kf8 A) < 26.Bf7 Ra6 27.Ne6 Re6 28.Be6 Ke7 29.Qf7 Kd6 30.Qc7 Kc7+–; B) 26.Nf7 Ne3 27.Qf6 Ng4–/+ (27...Nc4 28.Nd6 Kg8 29.Nf5+–; 27...Ra4?? 28.Nd6 Qf7 29.Qf7); C) 26.Ne6 Ke7 27.Qf7 Kf7 28.Nc7 Ke7 29.Na8+–) 26.Qg4 (26.Qf7 Qf7 27.Nf7 cd4 28.Bd4 Kg6=+; 26.Bf7 Nf2 27.Qf2 Ra6 28.dc5 Kf8 29.Bg6 Bf4 30.Nh7 Ke7 31.Qh4 Kd7 32.Nf8 Kc8 33.Bf5 Kb8 34.Qf4 Qf4 35.ef4 Ra4 36.Be5 Ka7+–; < 26.Qh7 Kf8 27.Ne6 Ke7 28.Qf7 Kf7 29.Nc7 Ke7 30.Na8 Bd6+–) 26...Qg3 27.dc5 Kf8 28.Nh7!! (28...Ke7 29.Qe6 Kd8 30.Qf7 Qe3 31.Qf6 Qe7 32.Qe7 Ke7 33.Kh2+–) 1–0. Negroni,Giovanni – Bendig,Frank, corr ICCF TT–4–90, 1992.

5.e3 Nf6 6.Nf3 d6 7.Be2 Bf5 8.0–0 Be7 9.d4 e4 10.Nfd2 d5 11.Nc3 0–0 12.Qb3 Nbd7 13.a4 Qb4 14.Ba3 Qb3 15.Nb3 Ba3 16.Ra3 Nb6 17.cd5 Nbd5 18.Nd5 Nd5 19.a5 Nc3 20.Bc4 Be6 21.Be6 fe6 22.Nc5 Nb5 23.Raa1 Rf7 24.Ne4 Kf8 25.f4 Ke7 26.Ng5 Rf5 27.Nh7 Nc3 28.Ng5 Rfa5 29.Ra5 Ra5 30.Ne4 Ne4 0–1. marvis (1635) – alexmicut (1815), playok.com, 2012.

5.Nf3 d6 6.e3 Nd7 7.Nc3 Ngf6 8.Be2 g6 (8...Be7 9.0–0=) 9.0–0 Bg7 10.d3 0–0 11.Nd2 d5 12.Nb3 Qd8 13.cd5 Nd5 14.Ne4 (14.Nd5 cd5 15.d4 e4=) 14...N7b6 15.Nec5 Na4 (15...Qg5 16.a4=) 16.Na4 Ra4 17.Nd2 (17.d4 ed4 18.Nd4 Qa5=) 17...Ra8=+ 18.Nc4 Re8 (18...Qg5 19.Nd6=+) 19.a4= Nb6 20.Nd2 Be6 21.Ne4 Nd7 (21...Nd5 22.d4 Qb6 23.Rb1=) 22.Nd6 Rf8 23.Ba3 Qc7 24.Qc2 Rfd8 25.Rfb1 The backward pawn on b7 becomes a target 25...b6 26.Ne4 Nf6 27.Bf3 Ne4 28.Be4 Bd5 29.Bd5 Rd5 30.e4 Rda5 31.Bb4 R5a6 32.Bd2 Qd7 33.h3 b5 34.a5 Bf8 35.Bc3 Bd6 36.Qb2 Qe7 37.Kh1 Bc7 Increasing the pressure on the isolated pawn on a5 38.Rd1 Rd8 39.f3 f6 40.d4 Kg7 41.d5+= Qd6 42.Rac1 Ba5= 43.Ba5 Ra5 44.Rc6 Qc6 45.dc6 The passed pawn on c6 will quickly become a dangerous weapon. A pinning theme 45...Rd1 46.Kh2 Rd4? 47.c7+– Rc4 48.Qd2 Rc7 49.Qa5 Rb7 50.Qa6 Rf7 51.Qb5 g5 52.Kg3 h6 53.Qd5 Rc7 54.h4 gh4 55.Kh4 (55...Rc1 56.Kg4+–) 1–0. Stephan,Axel – Vardjavand,Varahram, JBLN West, 1993.

5.Nf3 d6 6.e3 e4 7.Bc3 Qh5 8.Nd4 Qd1 9.Kd1 =.

5.Nf3 d6 6.e3 Nf6 7.Bc3 Qa4 8.Qa4 Ra4 9.d4 =.

5.Nf3 d6 6.e3 Nf6 7.Be2 e4 8.Nd4 (8.Bc3 Qa4 9.Qa4 Ra4=) 8...Qg5=+ 9.g3 Nbd7 10.f4 ef3 (10...Qa5 11.0–0=+) 11.Nf3= Qh6 (11...Qg6 12.0–0=) 12.Nc3 (12.0–0 Be7=) 12...Be7 13.Qc2 (13.Rb1 Qh3=) 13...0–0 14.Nd1 (14.0–0 Re8=) 14...Nc5 15.Nf2 d5 16.0–0 Nce4 (16...dc4 17.Bc4 b5 18.Be2=+) 17.Bd3 (17.cd5 cd5 18.Bd3 Nf2 19.Rf2 Rd8=) 17...Bh3 (17...Nf2 18.Rf2 dc4 19.Bc4=+) 18.Nh3= Qh3 19.Be4 (19.cd5 cd5 20.Qb3 Nc5=+) 19...Ne4 (19...de4 20.Ng5 Qg4 21.Bf6 Bf6 22.Rf6 Qg5=) 20.d3 Nf6 21.Ne5 (21.c5 Rfe8=) 21...Qe6 (21...Rfe8 22.cd5 Nd5 A) < 23.Rf7 Ne3 24.Qf2 Bf6 25.Rf6 gf6 26.Qe3 Qe6–/+ (26...fe5 27.Qg5 Kh8 28.Be5 Re5 29.Qe5 Kg8 30.Qg5 Kh8 31.Qf6 Kg8 32.Rf1+/–); B) 23.Qf2=+) 22.c5 (22.cd5 Nd5 (< 22...Qd5 23.a4=) 23.e4 Ne3–+) 22...Nd7 (22...Rfe8 23.Bd4=) 23.Nd7 Qd7 24.Qc3 (24.Bd4 Rfe8=) 24...f6 25.Qc2 Ra5 26.Bd4 Rfa8 27.a4 Bd8 (27...Qe6 28.Rf4=) 28.Rfb1 R5a7 29.Ra2 (29.Rb2 Be7=) 29...h6 (29...Bc7 30.Rab2=) 30.Kg2 (30.Rab2 Be7=) 30...Kh8 (30...Bc7 31.Rab2=) 31.Raa1 (31.Rab2 Be7=) 31…Kh7 (31...Qe6 32.Qb3=) ½–½. Scheller,Claus Dieter – Fransson,Jens, Schleswig Holstein–ch M, 1994.

5.Nf3 e4 6.Nd4 Nf6 7.e3 d5 8.Be2 (withdrawal; 8...Nbd7 =+) 1–0. Roggensack – KD Hoffmann, corr SOK–91–73.

5.Nf3 f6 6.g3 (6.e4 Bb4=) 6...Bc5 7.e3 Ne7 8.Bg2 Qb4 9.Qb3 Ra4 (9...d5!? 10.Qb4 Bb4 11.cd5 cd5=+) 10.Nc3= Ra5 (10...Qb3 11.ab3 Ra1 12.Ba1=) 11.0–0 0–0 (11...Qb3 12.ab3 Bb4 13.d4+=) 12.d4+/– ed4 13.ed4 Bd6 14.c5 Qb3 15.ab3 Ra1 16.Ra1 Bc7 17.b4 d5 18.b5 cb5 (18...Nd7!?+=) 19.Nb5 Na6 (19...Bd8 20.Nd6 Nbc6 21.Ra8+/–) 20.Re1 (better is 20.Ra6 ba6 21.Nc7+–) 20...Kf7+/– 21.Nc7 Nc7 22.Nd2 Be6 23.Nb3 Ra8 24.Ra1 Ra1 25.Ba1 Nc6 26.Bc3 Nb5 27.Bb2 Ke7 28.Bf1 Nc7 29.Bd3 g6 30.Bc3 Bg4 31.Na5 Nd8 (31...Bf3!?=) ½–½. Grund,Karl – Diener,Rudolf, corr, 1981–83.

4.c4 Nf6

5.Bc3 Qc7 6.g3 (6.Nf3 Ne4=) 6...d6 7.Bg2 Nbd7 8.d4 e5 9.Nh3 Be7 10.0–0 0–0 11.Qc2 b6 (11...Nb6 12.Nd2+=) 12.Ng5 Ba6 13.Nd2 h6 14.Nge4 Ne4 15.Qe4 Rac8 16.Rac1 f5 17.Qb1 e4 18.d5 (18.e3 d5=) 18...Bf6 (18...cd5 19.cd5 Qb7 20.Qb2–/+) 19.a4 (better is 19.Bf6 Nf6 20.Bh3+=) 19...Bc3–/+ 20.Rc3 cd5 21.e3 (21.Rfc1 d4 22.Ra3 d5–+) 21...dc4 22.Rfc1 Ne5 23.f4 Nd3 24.R1c2 d5 25.Bf1? Qc5 26.Bd3 Qe3 27.Kg2 ed3 28.Ra2 d4 29.Rca3 Bb7 30.Kh3 Qe2 31.Ne4 Qh5 (31...Qh5 32.Kg2 Be4 33.Kg1 d2–+) 0–1. waterslag (1965) – jbpatzer (1940), net–chess.com, 2009.

5.Nc3 d6 6.Nf3 e5 7.e4 Bg4 8.Be2 Be7 9.0–0 0–0 10.d3 Nbd7 11.h3 Bh5 12.Nd2 Bg6 13.Nb3 Qc7 14.Bc1 Ne8 15.f4 f5 16.fe5 Ne5 17.ef5 Bf5 18.d4 Nd7 19.Bf4 Bg6 20.Bd3 Bd3 21.Qd3 Nef6 22.c5 Ra3 23.Rae1 Re8 24.Re7 Re7 25.cd6 Qd8 26.de7 Qe7 27.Qc4 Kh8 28.d5 Nb6 29.d6 Qd7 30.Qe2 h6 31.Qe7 Na4 32.Na4 Ra4 33.Nc5 Qe7 34.de7 Ra2 35.Bh6 Re2 36.Bg5 b5 37.Bf6 gf6 38.Rf6 Re7 39.Rc6 Re5 40.Nd7 Rd5 41.Rb6 Rd7 42.Rb5 Kg7 43.Kh2 Kg6 44.Rb4 Rd3 45.h4 Kh5 46.g3 Rc3 47.Kh3 Rd3 48.Rb5 Kg6 49.h5 Kh6 50.Kh4 Rd1 51.Rb6 Kg7 52.g4 Rh1 53.Kg5 Rg1 54.Rb7 Kg8 55.h6 Ra1 56.Kh5 1–0. florin956 (1745) – fakejake (1645), playok.com, 2012.

5.e3 d5 6.Nf3 e6 7.Be2 Be7 8.Qc2 0–0 9.0–0 Nbd7 10.d4 b5 11.c5 Ne4 12.Nfd2 f5 13.f3 Nef6 14.a3 g5 (14...Qc7 15.Bd3=) 15.Nc3+= Rf7 16.e4 (16.a4 b4 17.Na2 Qa4+/–) 16...f4 (16...e5 17.de5 Bc5 18.Kh1 Ne5 19.ed5 cd5+/–) 17.e5+/– Nh5 18.a4 b4 19.Nb5 Qd8 (19...cb5?? 20.ab5 Qa1 21.Ba1+–) 20.Nd6 Bd6 21.cd6 Ba6 22.Ba6 Ra6 23.Nb3 Rg7 24.Qd2 Ra7 25.h3 Ng3+= 26.Rfc1 Nf8 27.Rc6+– h5 28.Rac1 g4 29.fg4 hg4 30.Rc8 Qg5? 31.Nc5+– gh3? 32.Rf8! Kh7 33.Kh2 hg2 34.Kg1?? Qh4–+ 35.Qd3 Rg6 36.Qg6 Kg6 37.Kg2 Rf7 38.Rf7 Kf7 39.d7 Ne4 40.Ne4 de4 41.Rc8 f3 42.Kf1 e3 (42...e3 43.Rf8 Kf8 44.d8Q Qd8 45.Bc3 Qh4 46.Bb4 Kf7 47.Kg1 Qg3 48.Kf1 Qf2#) 0–1. Vasut,Karel (2165) – Cerveny,Martin, MOR–chT2S, 2003.

5.e3 d5 6.Nf3 Bf5 7.Be2 e6 (7...dc4 8.Bc4 e6 9.Bf6 gf6 10.0–0+=) 8.Bf6 gf6 9.0–0 Qa4 (9...Rg8 10.cd5 Bh3 11.Ne1=) 10.Qc1 (10.Qa4 Ra4 11.cd5 ed5=) 10...Nd7 (10...dc4 11.Bc4 Rg8 12.d4=) 11.cd5 cd5 (11...ed5 12.Nd4 Bg6 13.f4+=) 12.Nd4+= Bg6 (12...Be4 13.Qc7 Qa5 14.Qb7+/–) 13.Qc7+/– Qa5 14.Qb7 Rb8 15.Qc6 Bc5 16.Nb3 Qb6 17.Qb6 Bb6 18.Nc3 Ke7 19.Rfc1 Rhc8 20.Nb5 (20.d4 Rc7+/–) 20...Nc5 21.Nc5 Bc5 22.a4 Bb4 23.d4 Ba5 24.Na7 Rc1 25.Rc1 Kd6? (better is 25...Rb2 26.Nc6 Ke8 27.Na5 Re2+/–) 26.Bb5+– Bc7 (26...Rg8 27.Nc8 Rc8 28.Rc8 Bc7+–) 27.Rc6 Kd7 28.Rb6 Kd8 (28...Ke7 29.Rb8 Bb8 30.Nc6 Kd6 31.Nb8+–) 29.Nc6 Kc8 30.Ba6 (30.Ba6 Kd7 31.Nb8 (31.Rb8?! Bb8 32.Nb8 Kc7+–) 31...Kd8 32.a5+–; 30.Nb8?! Bb6 31.Nd7 Bd8+–; 30.Rb8?! Bb8 31.Nb8 Kb8+–) 1–0. Capel,Evan Timothy (2125) – Johns,Daniel (1900), 43rd North Shore Open, 2016.

5.e3 d5 6.Nf3 Bg4 7.cd5 cd5 8.Be2 Nc6 9.0–0 e6 10.h3 Bf5 11.Nd4 Bg6 12.Nc6 bc6 13.Bf6 gf6 14.Nc3 Bd6 15.d4 Rg8 16.Qd2 Bb4 17.Rfc1 Ba3 18.Rd1 Rb8 19.Nb1 Qd2 20.Nd2 Bb2 21.a4 Ba1 22.Ra1 Kd7 23.Kf1 Rb2 24.Ke1 e5 25.Nf3 Be4 26.de5 Bf3 27.Bf3 fe5 28.a5 f5 29.a6 e4 30.Be2 Kc7 31.g4 Rgb8 32.gf5 Rb1 33.Rb1 Rb1 34.Kd2 Rb2 35.Ke1 Ra2 36.Kf1 Ra6 37.Ba6 Kd6 38.Bb7 c5 39.Ke2 Ke5 40.f3 ef3 41.Kf3 c4 42.e4 d4 43.Ba6 c3 44.Bd3 h6 45.h4 Kf6 46.Kf4 Ke7 47.e5 Kd7 1–0. carocan (1820) – skiver43 (1885), kurnik, 2012.

5.e3 d6 6.Nf3 e5 7.Be2 Be7 8.0–0 0–0 9.d3 e4 10.Nfd2 ed3 11.Bd3 d5 12.Nc3 dc4 13.Nc4 Qd8 14.h3 Nbd7 15.Bc2 Nc5 16.Qd8 Rd8 17.Rfd1 Be6 18.Rd8 Rd8 19.Ne5 Rd2 20.Rc1 Nd5 21.Nf3 Nc3 22.Nd2? (better is 22.Bc3!? Rd7 23.a4=) 22...Ne2–/+ 23.Kf1 Nc1 24.Bc1 Ba2 25.Ba3 Bf8 26.Ke2 b5 27.Nf3 Bc4 28.Kd2 Bd5 29.Ne1 g6 30.f3 Nb3 31.Bb3 Bb3 32.Bf8 Kf8 33.Kc3 Be6 34.Kb4 Ke7 35.Kc5 Kd7 (35...Bd7 36.Nd3–/+) 36.h4 (36.Nd3 Kc7 37.Ne5 b4 38.Kb4 Kd6=) 36...h5 (better is 36...Bc4!?–/+) 37.Nd3= Bd5 38.Nb4 Ke6 39.Nd5 cd5 40.Kb5 Ke5 41.Kc5 f6 42.g4 f5 (43.g5 f4 44.ef4 Kf4 45.Kd5 Kg3+–) +–. Chirica,Bogdan – Enache,Valeriu (2130), Centrocoop June op–A, 1999.

5.Nf3 d5 6.cd5 cd5 7.g3 Bf5 (7...Nc6 8.Bg2+=) 8.Nc3 (8.Bg2 Nc6=) 8...e6 (8...Nc6 9.Qb3+=) 9.Bg2 (9.Nd4 Bg6=) 9...Bd6 (9...Qb6 10.Qb3 Qb3 11.ab3 Ra1 12.Ba1+=) 10.0–0 (10.Qb3 0–0=) 10...0–0 11.d3 (11.Nd4 Nc6 12.Nf5 ef5=) 11...Rd8 (11...Rc8 12.Qb3+=) 12.Qb3= Na6 (12...Nbd7 13.Nd4 (13.Qb7?? Rdb8 14.Qc6 Rb6–+) 13...Nc5 14.Qc2=) 13.Qb5 (13.Nd4 Nc5 14.Qc2 Rac8=) 13...Qb4 (13...Nc5 14.Rfc1=) 14.Qb4 Bb4 15.Nh4 (15.Nb5 Rdc8+=) 15...Bg6 (15...Bg4 16.Nf3=) 16.Ng6+= fg6 (16...hg6 17.Rfc1=) 17.Rfd1 Rf8 (17...Be7 18.Rdc1+=) 18.e4 (18.Nb5 Rfc8+=) 18...d4 (18...Nc5!? 19.ed5 Ng4+=) 19.Nb5+/– Ng4 (better is 19...e5!?+/–) 20.Bd4+– e5 21.Be3 (better is 21.h3!?+–) 21...Ne3 (21...Be7 22.Bh3 Ne3 23.fe3+=) 22.fe3+/– Rac8 23.a3 Be7 24.Rac1 (better is 24.d4!?+/–) 24...Bg5= 25.Rc8 Rc8 (25...Be3 26.Kh1 Rc8 27.Bh3=) 26.Re1 (26.Kf2 Rc2 27.Kf3 Be3 28.Ke3 Rg2+=) 26...Rc2 (26...Rc1 27.Rc1 Be3 28.Kf1 Bc1 29.Ke2=) 27.d4+= Rc1 28.Rc1 (28.Kf2 Re1 29.Ke1 Be3+=) 28...Be3 29.Kf1 Bc1 30.de5 (30.d5 Nc5+=) 30...Nc5= 31.e6 Ne6 32.e5 Kf7 (32...Nc5 33.a4=) 33.Bb7+= Bb2 (33...Nc5 34.Bd5 Kf8 35.Ke2+=) 34.a4 Be5 35.a5 Nc5? (better is 35...Nd4 36.Na3 Ke6+=) 36.a6+– Bb8 (36...Na6 37.Ba6 h5 38.Na3+–) 37.a7 Ba7 38.Bd5 Kf6 39.Na7 Ke5 40.Bg8 h6 41.Bf7 g5 ½–½. Biran,Anastasija – Khamenya,Vitalia, Batumi GEO, 2014.

5.Nf3 d5 6.cd5 Qd5 7.a4 Na6 8.g3 g6 (8...Bg4 9.Nc3 Qa5 10.Bg2=+) 9.Nc3 Qd8 (9...Qe6 10.Bg2=) 10.Bg2 Bg7 11.0–0 0–0 12.h3 Nc5 13.Qc2 Be6 14.Ra3 Bf5 15.d3 Nd3 16.g4 (better is 16.ed3!? Bd3 17.Qd1 Bf1 18.Qf1=) 16...Nb2–/+ 17.gf5 Nc4 18.Rb3 Qc7 19.Rfb1 Na5 20.Rb4 Rfd8 21.fg6 fg6 22.Nd4 Qe5 (22...Qd6 23.e3–/+) 23.e3 (better is 23.Nb3=+) 23...Qc5?? (23...e6 24.R4b2–/+) 24.Ne4?? (24.Ne6 Qh5 25.Nd8 Rd8 26.Qa2 Nd5 27.Nd5 cd5 28.Rb5+–) 24...Qc2–/+ 25.Nc2? (better is 25.Nf6!? Bf6 26.Nc2–+) 25...Nd5–+ (26.Rb7 Nb7 27.Rb7 Ra4–+) 0–1. Roever – Gorzel, corr SOK–89–34, 1989.

5.Nf3 d5 6.e3 Bg4 7.cd5 Nd5 8.Be2 f6 9.Nc3 e5 10.Qb3 Bb4 11.Nd5 cd5 12.0–0 e4 13.Nd4 Bd7 (better is 13...Be2!? 14.Ne2 Nd7=) 14.a3 Bd6 (14...Bd2 15.Qb7 Qa4 16.Rad1+–) 15.Qb7 (better is 15.Bc3 Qc7 16.Qd5 Bh2 17.Kh1+/–) 15...0–0?? (better is 15...Ra7 16.Qb3 Qc7+/–) 16.Bc3 (better is 16.Nb3!? Qa4 17.Qd5 Rf7+–) 16...Ra7 17.Qb3 (17.Ba5?! Rb7 18.Rfc1 Rc8 19.Rc8 Bc8+/–) 17...Qc7 18.Qd5 Kh8 19.h3 f5 20.Bb5 (20...Ra3 21.Ra3 Ba3 22.f3 ef3 23.Bd7 (23.Nf3?! Bb5 24.Qb5 Nc6+/–) 23...Qd7 24.Qd7 Nd7 25.Rf3+–; 20.Bb4 Bb4 21.ab4 Ra1 22.Ra1 Qb6+–) 1–0. Sternik,Ryszard – Bedbur,Heinz, corr SOK–90–57, 1990.

5.Nf3 d6 6.e3 Nbd7 7.Be2 g6 8.0–0 Bg7 9.d4 0–0 10.Nbd2 e5 11.Qc2 Re8 12.Nb3 Qc7 13.a4 ed4 14.Nfd4 Ne4 15.Ra2 Nec5 16.Rfa1 Na6 17.Qd2 Ndc5 18.Bf3 Qb6 19.Nc1 h5 20.h3 Qb4 21.Qe2 Qb6 22.a5 Qc7 23.Bc3 Bf5 24.Qb2 Qd7 25.Nf5 Bc3 26.Nh6 Kh7 27.Qc3 Kh6 28.Ne2 Qe7 29.Rd2 Qe5 30.Rad1 Qc3 31.Nc3 Nb4 32.Rb1 Nbd3 33.Be2 Ne5 34.Rd6 Ra5 35.Rbd1 Re7 36.Bf1 Kg7 37.f4 Ned7 38.e4 Nb6 39.e5 Ra3 40.Nd5 Nd5 41.cd5 cd5 42.R6d5 Ne6 43.Rd7 Kf8 44.Re7 Ke7 45.Rb1 Nf4 ½–½. Dzieniszewski – Piersig, Potsdam 1986.

5.Nf3 d6 6.e3 Bg4 7.Be2 e5 8.0–0 Be7 9.h3 Bh5 10.d4 e4 11.Nfd2 Be2 12.Qe2 0–0 13.Nc3 d5 14.cd5 cd5 15.a4 Nc6 16.Nb5 Nb4 17.Nb3 Qd8 18.Ba3 Nd3 19.Be7 Qe7 20.f4 Qb4 21.Rfb1 Ra4 22.Ra4 Qa4 23.Nc5 Qa8 24.Nd3 ed3 25.Qd3 Ne4 26.Kh2 Qa2 27.Rf1 Rc8 28.Qb1 Qe2 29.Qe1 Qb5 30.Qh4 g6 31.f5 Qf1 32.fg6 hg6 33.Qe7 1–0. marvis (1730) – fakejake, playok.com, 2012.

5.Nf3 g6 6.Bc3 Qc7 7.e4 (7.e3 Bg7=) 7...Bg7 8.Qe2 0–0 9.e5 Ne8 10.h4 d6 11.h5 Bg4 12.hg6 fg6 13.c5 Bf3 14.gf3 Be5 (14...Nd7 15.Qc4 d5 16.Qh4 Ne5 17.Qh7 Kf7 18.Be2=) 15.d4 Bf6 16.Qe6 Kg7 17.Qh3 Rh8 18.Bc4 d5 19.Qh6 (19.Bd3 Qf4 20.Bg6 Kf8+= (20...Kg6? 21.Qh5 Kg7 22.Bd2 Qd2 23.Nd2+–)) 19...Kg8 (19...Kf7 20.Bd3=+) 20.Bd3 Bg7 (better is 20...e5!? 21.de5 Be5–/+) 21.Qe3+= Nf6 22.f4 Kf7 23.f5 Qd7 24.Qf4 Na6 25.Rg1 gf5 26.Bf5 e6 27.Bd3 Rag8 28.Rh1 Ke7 (28...Ke8 29.f3+/–) 29.Nd2 Qc7 30.Qe3 (30.Qh4 Kd7+=) 30...h5 (30...Ng4 31.Qf3 h5=+) 31.Nf3 Ng4 32.Qd2 Bh6 (32...Rf8 33.Rh3+/–) 33.Qe2 Qf4 (33...Bf4 34.a3+/– (< 34.Ba6 ba6 35.a4 Qb7=)) 34.Rh3 (34.a3 Bg7 35.Bd2 Qf7+/–) 34...Nc7 35.Bd2 (35.a3 Kd8+/–) 35...Qf6 36.Ba5 (36.Bh6 Rh6 37.a3 Kd7+=) 36...Ne8 (36...Bf4 37.Rb1+/–) 37.Qb2 (37.Rb1 Bf4 38.Bc3 Kd7 39.Rb7 Nc7+/–) 37...Kf8 38.a3 (< 38.Qb7 e5 39.Qc8 e4=+) 38...Bf4 39.Bc3 (39.Qb7 e5 40.Qd7 e4–+) 39...Qf7 40.Bd2 Bd2 41.Qd2 Nef6 42.Ng5 (42.Qe2 Ne4 43.Be4 de4 44.Qe4 Qf5 45.Qf5 ef5+/–) 42...Rg5= 43.Qg5 Ne4 44.Qh4 Nef2 (44...Qf2? 45.Qf2 Ngf2 46.Rf3 Ke7 47.Rf2 Nf2 48.Kf2+–) 45.Rg3 Nd3 (better is 45...Ke8 46.Be2 Qf4=+) 46.Kd2?? (46.Rd3 e5=) 46...Qf2 (46...Qf4 47.Kc3 Nc5 48.dc5 Qe5 49.Kb3 Qa1 50.Qd8 Kg7 51.Qe7 Kh6 52.Qe6 Qf6 53.Qe2–+) 47.Kc3?? (47.Kd3 e5 48.Rg4 e4 49.Re4 de4 50.Qe4 Rg8–/+) 47...Qb2 (better is 47...Nf4 48.Kb3 Ke8–+) 48.Kd3= Qa1 (49.Qd8 Kg7 50.Qd7 Kh6 51.Qe6 Kg7 52.Qe7 Kg6 53.Qe6 Kh7 54.Qf7 Kh6 55.Qe6 Kg5 56.Qe7 Kf5 57.Qf7 Kg5 58.Qe7 Kf4 59.Qc7 Kg5 60.Qe7=; 48...Ke8 49.Rg4 Qa1 50.Rg7 Qd1 51.Kc3 Qc1 52.Kb3 Qc4 53.Kb2 Qe2 54.Kc3 Qc4 55.Kb2 Qb5 56.Ka1 Qf1 57.Kb2 Qb5 58.Ka1 Qf1 59.Kb2 Qb5=) =. Trokenheim,Marek – guest831, ICC, 2004.

4.e3 d5

5.c4 dc4 6.Bc4 b5 7.Bb3 e6 8.a4 Bb7 9.ab5 Qb5 10.Ra8 Ba8 11.Nf3 Nd7 12.Nc3 Qb4 13.Qa1 Bb7 14.Bc2 (14.Bd1 Ngf6+=) ½–½. Woschkat,Karl_Heinz – Schulz,Manfred, frechess., 2001.

5.c4 e6 6.Nf3 Nd7 7.Be2 Ngf6 8.0–0 Bd6 9.d4 Qc7 10.Nbd2 0–0 11.Qc2 Re8 12.Rfd1 Qa5 13.Nb3 Qa4 14.c5 Bc7 15.Ne5 Ne5 16.de5 Nd7 17.Rd4 Qa7 18.Rh4 g6 19.e4 Be5 20.Be5 Ne5 21.Qd2 Nd7 22.Qh6 Nf8 (worse is 22...Nc5 23.Qh7 Kf8 24.Rf4+/–) 23.e5 b6 24.Nd4? (better is 24.Qc1=) 24...bc5–+ 25.Nf3 (25.Nc6?? Qb6–+) 25...Qc7 26.h3 Ba6 27.Ba6 Ra6 28.Re1 Ra2 29.Ng5 Qa5 30.Re3 Qd2 31.Rf4 Qd1 32.Kh2 Qh5 33.Qh5 gh5 34.Nf7 Ng6 35.Rf6 c4 36.Ng5 Nf8 37.Rg3 h4 38.Rg4 h5 39.Rh4 c3 40.Rh5?? (40.Rf3 c2 41.Rc3–+) 40...c2 41.Nf7 c1Q 42.f4 Qc2 43.Rg5–/+ Ng6! 44.f5 Kf8 45.Nd6 Ke7 46.Rgg6 Rh8?? 47.Rg7 Kd8 48.Nf7 Kc8?? 49.Nh8+– Qc5 50.Ng6 Rg2 51.Kg2 Qc2 52.Kg3 Qd3 53.Kg4 Qe2 54.Kg5 Qe3 55.Nf4 Qg3 56.Kh6 Qf4 57.Kh7 (57.Kh7 Qf5 58.Rf5 ef5 59.Kg6+–) 1–0. Bolbat,M (2150) – Mazyrin,Yuri, Cheliabinsk Region–ch, 2008.

5.c4 Bf5 6.Qb3 Nd7 7.Bc3 (7.cd5 Qd5 8.Qd5 cd5=) 7...Qb6+= 8.Qb6 (8.Qd1 Ngf6+=) 8...Nb6 9.Bd4 (9.d3!?+=) 9...Nc4–/+ 10.d3 Na3 11.Na3 Ra3 12.Bc5 (12.Nf3 e6–/+) 12...Ra4 (12...Ra5 13.d4–/+) 13.Nf3 Nf6 14.Nd4 (14.h3 e6 15.Bf8 Rf8–/+) 14...Bg6–+ 15.Nb3 (15.f4 Nd7 16.Nb3 b6–+) 15...Nd7 16.Bd4 (16.f4 b6 17.Bd4 f6–+) 16...e5 17.Bc3 Bd6 18.Be2 (18.h4 h5–+) 18...Ke7 19.0–0 (19.Nc1 b5–+) 19...Rha8 20.Nc1 f6 (20...Ba3 21.d4–+) 21.g3 (21.Bd1 Ra3 22.Bb2 R3a7–+) 21...Ba3 22.Nb3 Nc5 23.Rfd1 R4a7 24.Nc5 Bc5 25.Rd2 d4 26.ed4 ed4 27.Bb2 Ra2 28.Ra2 Ra2 29.Bd1 Kd6 30.Bb3 Ra8 31.Kg2 b5 32.Rd1 Bb6 33.Bc1 c5 34.Bf4 Kc6 35.Re1 Re8 36.Re8 Be8 37.Kf1 Bh5 38.h3 Bf3 39.g4 h6 40.Be6 g5 41.Bb8 Bc7 42.Bc7 Kc7 43.Bb3 Kb6 44.Ke1 Ka5 (44...Ka5 45.Bg8 Bg2–+) 0–1. Sayder,Hans Joachim – Boettcher,Patrick (1940), Berlin, 2005.

5.c4 Bf5 6.cd5 Qd5 7.Nc3 Qd8 (7...Qa5 8.Nf3=) 8.Nf3 e6 (8...Nf6 9.Qb3 Nbd7 10.d4= (worse is 10.Qb7 Rb8 11.Qa6 Rb2–+)) 9.Bc4 (9.Be2 Nf6=) 9...Nf6 (9...b5 10.Be2+=) 10.0–0 (10.a4 Nbd7=) 10...b5 11.Be2 Be7 (11...b4 12.Nb1=) 12.d4 (12.d3 0–0=) 12...h6 (12...b4 13.Nb1=) 13.Bd3 (13.a4 b4 14.Nb1 0–0+=) 13...Bd3 (13...b4 14.Ne2=) 14.Qd3 0–0 15.Ne5 (15.a4 b4 16.Ne4 Ne4 17.Qe4 Qd5=) 15...Bd6 16.f4 Qb6 (16...b4 17.Ne2=) 17.a4+= b4 18.Nc4 Qc7 19.Ne2 Be7 (19...c5 20.dc5 Be7 21.a5=) 20.e4 (20.a5 Rd8+=) 20...Rd8 (20...c5 21.f5=) 21.e5 Ne8 (21...Nd5 22.f5 ef5 23.Qf5+=) 22.f5+/– ef5 (22...c5 23.fe6 fe6 24.Qg6 cd4 25.Qe6 Kh8 26.Bd4+– (26.Nd4?! Ra6 27.Qf7 Bc5+=)) 23.Qf5 (23.Rf5 Bg5+/–) 23...Bf8 (23...Bg5 24.a5+/–) 24.Nf4 Qe7 25.e6 Nd6 (25...Nf6!?+/–) 26.ef7+– Nf7 27.Rae1 Qa7 (27...Qg5 28.Qc2+–) 28.Ng6 (28.Ng6 Rd4 29.Bd4 Qd4 30.Rf2+–) 1–0. Kern – Hansen, (year?).

5.Be2 Qb6 6.Bc3 Nf6 7.Bf6 ef6 8.Nf3 Bf5 9.Nc3 Bd6 10.0–0 0–0 11.Nh4 Be6 12.Bd3 Be5 13.Qh5 g6 14.Ng6? (better is 14.Qh6+=) 14...fg6–+ (14...hg6?! 15.Bg6 Rd8 16.Rfb1–/+) 15.Bg6 Qc7 (15...hg6?! 16.Qg6 Kh8 17.Qh6 Kg8 18.Qg6 Kh8 19.Qh6 Kg8 20.Qg6=) 16.Bd3 Ra3 17.f4 Bc3 18.dc3 Qe7 (worse is 18...Rc3 19.f5 Bd7 20.Qg4 Kf7 21.Qh5 Ke7 22.Qh7 Rf7 23.Qg8–/+) 19.Rf3 Rc3 20.Rh3?? (better is 20.a4–+) 20...Bh3 21.Qh3 Ra3 22.Re1 Kh8 23.e4 Ra2 24.Kf1 Ra4 25.Qf5 Re8 26.e5 (26.g3 Nd7 27.c3 de4–+) 26...Nd7 27.Re3 (27.e6 Nc5–+) 27...fe5 28.fe5 Rf8 (28...Rf8 29.g3 Rf5 30.Bf5 Ne5–+) 0–1. DKCozy – Bauernopfer, playchess.de, 2001.

5.Be2 Bf5 6.Nf3 Nd7 7.0–0 e6 8.c4 (8.Nd4 Nh6=) 8...Ngf6 9.Nc3 (9.d3 Bd6=) 9...dc4=+ 10.Bc4 b5 11.Bb3 Bd3 (11...b4 12.Ne2=+) 12.Re1 Bd6 13.Bc2 Nc5 14.Qb1 Qd8 15.Ne2 0–0 16.Bf6 gf6 17.Ned4= Bc2 18.Qc2 Ra3 19.Nc6+= Qc7 20.Ncd4 Bh2?? 21.Nh2+– (21…b4 22.Nb5+–) 1–0. Houdek – Hanison,Bernard, corr 3GMM–17, 1995.

5.Nf3 b5 =.

5.Nf3 b6 6.Bc3 Qa7 =.

5.Nf3 b6 6.Be2 Ba6 7.0–0 Be2 8.Qe2 Nf6 9.Bf6+= ef6 10.d4 Bd6 11.Nbd2 Qc3 12.Rad1 Ra2 13.e4 0–0 14.ed5 cd5 Black is in command. 15.Qb5 Rc2 16.Qb6 Bf4 17.Nb3 Qc6 18.Qb4 Na6 19.Qa3 Bd6 20.Nc5 Nc5–+ 21.dc5 Rc5 22.Qe3 Re8 23.Qb3 Re4 24.Nd4 Qc7 25.Nb5 Bh2 26.Kh1 Qe5 27.Nc3? Qh5 28.Ne4 Bg3 (29.Kg1 Qh2#) 0–1. badboy1221 – laisla16, Live Game Caissa's Web, 2006.

5.Nf3 Nd7 6.Be2 f6 7.0–0 (7.Bc3 Qc7=) 7...e5 8.c4 Bd6 (8...dc4 9.Bc4 Nb6 10.Bc3=) 9.cd5 cd5 10.Nc3 Ne7 11.Nb5 Bb8 12.Ba3 Nb6 13.Qb3 Be6 (13...Nf5 14.Rfc1=) 14.Nd6+= Bd6 15.Bd6 Nec8 16.Bb4 (16.Bc7 Qc5 17.Bb6 Qb6 18.Qb6 Nb6+/–) 16...Qa4+= 17.Qa4 (17.d4 e4 18.Nd2 Qb3 19.ab3 Ra1 20.Ra1 h5+/–) 17...Na4 18.Rfc1 (18.d4 e4 19.Nd2 Ne7+=) 18...Kd8 19.h3 (19.d4 e4 20.Nd2 Nb2+=) 19...Nab6 (19...Nb2 20.a3+=) 20.a3 (20.d4 e4 21.Nd2 Na4+=) 20...Re8 (20...Kd7 21.d4 e4 22.Bb5 Kd8 23.Nd2+=) 21.d3 (21.d4 Nd7+=) 21...Bd7 22.Nd2 Bc6 23.Nb3 Na4 24.d4 e4 25.Na5 Kd7 26.Bg4 Kc7 27.Rc2 Kb6? 28.Nc6+– bc6 29.Bd7 Rd8 1–0. Wall,Bill – Vyoga, chess.com, 2010.

5.Nf3 Bg4 6.Be2 Nd7 7.0–0 Ngf6 8.c4 (8.Ne5 Be2 9.Qe2 e6=) 8...e6 (8...Bf3 9.Bf3 dc4 10.Qc1=+) 9.cd5 ed5 10.d4 (10.Ne5 Be2 11.Qe2 Ne5 12.Be5 Be7=) 10...Bd6=+ 11.Nc3 0–0 12.Qc2 Qc7 13.h3 Bh5 14.Rfc1 Rfc8 15.a4 h6 16.Ba3 Bg6 17.Bd3 Bd3 18.Qd3 Ba3 19.Ra3 Qd6 20.Ra2 ½–½. Houdek – Hansen,Bjarne G, corr 3GMM–17, 1995.

5.c4 Nf6

6.Nf3 Nbd7 7.Be2 =.

6.Nf3 Bf5 7.Bc3 Qa4 8.Qa4+= Ra4 9.Bf6 gf6 10.cd5+/– e5 11.dc6 Nc6 12.Nc3 Ra5 13.Bb5 Be6 14.a4 Be7 15.0–0 0–0 16.d4 ed4 17.Nd4 Nd4 18.ed4 (18...Rc8 19.Rfc1+/–) 1–0. Weir,R – Grobe,O, CiF, 1994.

6.Nf3 Bf5 7.Bc3 Qd8!? =.

6.Nf3 Bf5 7.Nc3 e6 8.Be2 Nbd7 9.0–0 Bd6 10.cd5 ed5 11.Nd4 Be6 12.Ne6 (12.f4 Nc5 13.f5 Bc8unclear) 12...fe6 13.Bh5 g6 14.Bg4–/+ Qb4 15.Be6 Qb2 16.Rb1 Qa3 17.Rb7 Nc5 18.Bf7 Kf8 19.Qf3 Nb7–/+ 20.Rb1??–+ Kf7 21.Rb7 Be7 22.g4 Qa6 23.Rc7 h6 0–1. Konijn – Schouwerwou, Hoogovens, 1999.

6.Nf3 Bf5 7.Nd4 Bg6 8.Nb3 =.

6.Nf3 Bg4 7.Be2 (7.Bc3 Qb6=) 7...dc4 (7...Bf3 8.gf3 dc4 9.Bc4=+) 8.Bc4= Bf3 (8...Qb4 9.Qc2=) 9.Qf3 Qb4 10.Bb3 Nbd7 11.0–0 e6 12.Nc3 g6 13.d4+= Bg7 14.Ne4 Ne4= 15.Qe4 Nc5 16.Qc2 Nb3 17.ab3 0–0 18.Ra8 Ra8 19.g3 Ra2=+ 20.Qc3 Qb6 21.Ra1=+ Ra1 22.Ba1 Qa7 23.b4 Qa4 24.Qe1 Qc2 25.Bc3 b6 26.Bd2 Bf8 (26...Qd3 27.Qc1=+) ½–½. Rush,Bradley – Paetzold,Ortwin, IECG 7PSRR, 1995.

5.Nf3 Nf6

6.c4 Bf5 7.Bc3 Qa4 8.Qa4 Ra4 9.Bf6 gf6 10.cd5 cd5 11.Bb5 Bd7 12.Ba4 Ba4 13.Nc3 Bc6 14.0–0 e6 15.d3 Na6 16.e4 Bb4 17.Rac1 Nc5 18.ed5 ed5 19.d4 Nd3 20.Rc2 Rg8 21.Nd5 Be7 22.Ne7 Ke7 23.Nh4 Nf4 24.f3 Kd7 25.Nf5 Bb5 26.Re1 Bd3 27.Rc5 Rg2 28.Kh1 Ra2 29.Ng3 Ne6 30.Rc3 Bb5 31.d5 Ng5 32.h4 Nh3 33.Ne4 f5 34.Nc5 Kd6 35.Nb7 Kd5 36.Rc5 Kd4 37.Rb5 Nf2 38.Kg1 Nh3 0–1. polynesia46 (1625) – expatrie (1780), kurnik, 2012.

6.Be2 b5 7.0–0 =.

6.Be2 Qb6 7.Ba3 Bg4 8.h3 Bf3 9.Bf3 e5 10.Bf8 Rf8 11.0–0 Nbd7 12.Nc3 e4 13.Bg4 Nc5 14.Be2 Ra3 15.Qc1 Qa5 16.Qb2 b5 17.Nb1 Ra4 18.Qe5 Kd7 19.Nc3 Ra3 20.Rfb1 b4 21.Nd1 Ne6 22.Rb2 Ra8 23.d3 ed3 24.Bd3 c5 25.g4 Qc7 26.Qf5 h6 27.h4 Ke7 28.g5 hg5 29.hg5 Nd7 30.Qd5 Ne5 31.Qg2 Rd8 32.Bf5 Rd2 33.g6 Qd7 34.Rbb1 Kf6 35.Qe4 Ng6 36.Bg4 Ng5 37.Qc4 Rc2 38.Qc2 Qg4 39.Kf1 Nf3 40.Qc5 Rd3 41.Qc6 Kg5 42.Qf3 Qf3 43.Rb4 Rd2 44.Kg1 Nh4 45.Rh4 Kh4 46.Kh2 Re2 47.a4 Qg3 48.Kh1 Re1 0–1. COMP – COMP, 2001.

6.Be2 Nbd7 7.0–0 b5 8.Bd4 =.

6.Be2 Nbd7 7.0–0 Qb6 8.Ba3 Ne4 9.d3 Nc3 10.Nc3 Ra3 11.Nb1 Ra8 12.Nbd2 e5 13.c4 Bb4 14.cd5 cd5 15.Qb3 Qa5 16.Rfd1 0–0 17.e4 Rd8 18.ed5 Nc5 19.Qc2 Rd5 20.Nc4 Qa4 21.Qb2 Ba3 22.Qb1 Nd7 23.Na3 Qa3 24.d4 ed4 25.Bc4 Rc5 26.Rd4 Qc3 27.Qf1 b5 28.Rc1 Qa3 29.Rd3 Qa7 30.Bd5 Rb8 31.Ng5 Ne5 32.Re1 Bf5 33.Rdd1 Nc4 34.Qe2 g6 35.Bf7 Kg7 36.Bd5 Rd8 37.Ne6 Be6 38.Qe6 Rc7 39.Rd3 Rf8 40.Re2 Rcf7 41.Bf3 Qc5 42.Rd5 Qb4 43.Qe4 Rc7 44.Qd4 Rf6 45.Be4 Qa3 46.f3 Nd6 47.Re5 Qc1 48.Kf2 Qf4 49.g3 Qc1 50.Re6 Ne4 51.R2e4 Rc2 52.Re2 Re2 53.Re2 Qa3 54.f4 Qd6 55.Qd6 Rd6 56.Rb2 Rd5 57.Ke3 Kf6 58.Rd2 Rc5 59.Kd4 Rc4 60.Kd5 h6 61.Rb2 Ra4 62.Kc5 Ra8 63.Rd2 Rb8 64.Rd6 Kf5 65.Kb4 g5 66.fg5 hg5 67.Rd5 Kg4 68.a3 Ra8 69.h4 gh4 70.gh4 Kh4 71.Rb5 Kg4 72.a4 Kf3 73.a5 Ke4 74.Rb6 Ra7 75.a6 Ke5 76.Kb5 Rh7 77.Rb7 Rh1 78.a7 Ra1 79.Kc6 Rc1 80.Kb6 Ra1 81.Rb8 Rb1 82.Kc6 Rc1 83.Kd7 Rd1 84.Ke7 Rg1 85.a8Q Rg7 86.Kf8 Rg1 87.Rb5 Kf4 88.Qa4 Kg3 89.Rb3 Kh2 90.Qf4 Kg2 91.Rg3 Kh2 92.Qh4 1–0. COMP – COMP, 2001.

6.Be2 Nbd7 7.0–0 e6 8.d3 (8.Bc3 Bb4=) 8...Bd6 9.Nbd2 (9.Bc3 Qc7=) 9...0–0 10.c4 (10.Nb3 Qc7=) 10...Qc7 (10...e5 11.Nb3 Qb4 12.c5 Bc5 13.Ne5=) 11.h3 b6 12.Qb3 Bb7 13.d4 Ra7 14.Rfb1 Rfa8 15.Rc1 h6 16.a4 c5 17.cd5 ed5 18.Bb5 Qd8 19.Nh4 c4 20.Qc3 Qf8 21.Ba3 Ba3 22.Ra3 Ba6 23.Bc6 Rc8 24.Bd7 Nd7 25.Rca1 Bb7 26.Nf5 g6 27.Ng3 Rca8 28.e4 b5 29.Rb1 Ra4 30.Ra4+= Ra4 31.Rb5 Bc6 32.Ra5 Nb6 33.Nf3 Qb4= 34.Qb4 Rb4 35.Ne5 Bb7 36.ed5 c3 37.Rc5 Nd5 38.Ne4 Rd4 39.Nc3= Nf4 40.Nf7 ½–½. Sayder,H – Langhans,J, corr, 1995.

6.Be2 Nbd7 7.Bc3 Qc7 =.

6.Be2 Bg4 7.0–0 Nbd7 8.d4 e6 9.Nbd2 b5 10.h3 Bh5 11.Re1 (11.Nb3 Qc7=+) 11...Nb6 (11...Bd6 12.Nb3 Qc7 13.Nfd2–/+) 12.Nb3 (12.Ne5 Be2 13.Qe2 Na4=+) 12...Qa7 13.Nfd2 Be2 14.Qe2 Nc4 15.Reb1 Nb2 16.Rb2 Bb4 17.Qd3 0–0 18.c3 Ba3 19.Rc2 Rfe8 20.e4 e5 21.Re1 Qc7 22.ed5 Nd5 23.Nf3 ed4 24.Re8 Re8 25.Nbd4 Nf4 26.Qf5 g6 27.Qf6 Bd6 28.c4 bc4 29.Rc4 Qb8 30.Nb3 Re6 31.Qa1 Ne2 32.Kf1 Qb5 33.Nbd2 Qd5 34.Qb1 c5 35.Qb3 h6 36.Re4 Qb3 37.ab3 Nc1 38.Re6 fe6 39.Ne4 Be7 40.Ne5 Kg7 41.Nc6 Bf8 42.Na5 Kf7 43.g3 e5 44.Ke1 Ke6 45.Kd2 Na2 46.f3 h5 47.g4 Nb4 =. Woschkat,Karl_Heinz (2140) – Salvador Marques,Carlos (2415), EM/J50/P063 ICCF Email, 2001.

4.e3 d6

5.c4 e5 6.Bc3 Qc7 7.Be2 Nf6 8.Nf3 Bg4 9.0–0 Nbd7 10.h3 Bh5 11.d3 d5 12.cd5 Nd5 13.Bb2 Bc5 14.Nbd2 0–0 15.a4 b6 16.Nc4 f6 17.Nd4? (17.d4 ed4 18.Nd4 Bf7=) 17...Be2 (Better is 17...ed4!? 18.Bh5 de3–/+) 18.Ne2= f5 19.Nc3 (19.d4 ed4 20.Nd4 Bd4 21.Bd4 b5 22.ab5 cb5 23.Ra8 Ra8+=) 19...Bb4 20.Nd5 cd5 21.Na3 Ba3 ½–½. Dopper,Johan – Myrberg,Johnny, TKM/SF/02, 2001.

5.Nf3 Nd7 6.Be2 Ngf6 7.0–0 g6 8.c4 Bg7 9.d4 0–0 10.Nbd2 Nb6 11.Qb3 Na4 12.Bc1 Qc3 13.Ba3 Qa5 14.Bb4 Qa7 15.Bd3 Bd7 16.Nb1 Rfd8 17.Bd2 Bg4 18.Nc3 Bf3 19.gf3 e5 20.Na4 Qa4 21.Bc3 Qb3 22.ab3 Nd7 23.d5 cd5 24.cd5 Ra1 25.Ra1 Rc8 26.Bb2 e4 27.Bg7 ed3 28.Bb2 Rc2 29.Ba3 d2 30.Rd1 Nc5 31.Bc5?? (better is 31.Kf1=) 31...Rc1–+ (31...dc5?! 32.Kf1 Kf8 33.Ke2=) 32.Bb4 (32.Kf1 Rd1 33.Ke2–+) 32...Rd1 33.Kg2 Rg1!! 34.Kg1 d1Q 35.Kg2 Qb3 36.Bd6 Qd5 37.Bb4 (37.Bc7 b5–+) 37...b5 (better is 37...Qg5 38.Kh3 Qb5 39.Ba3–+) 38.Bc3 (38.h3 Qg5 39.Kf1 Qh4–+) 38...Qc4 39.Bd4 b4 40.h4 b3 41.h5 Qd4! 42.ed4 b2 43.h6 b1Q 44.f4 Qe4 45.f3 Qd4 46.Kg3 Qg1 47.Kh4 (47.Kh3 f5 48.Kh4 g5 49.Kh3 gf4 50.Kh4 Qg6 51.Kh3 Qg3) 47...Qg2 48.f5 g5 49.Kh5 f6 50.f4 Qh3 (50...Qe2) 0–1. Svitek,Volker (2140) – Dahlheimer,Bernd, Hessenliga, 2006.

4.e3 e5

5.a3 Nf6 6.Nf3 d6 7.Be2 Be7 8.0–0 0–0 9.h3 e4 10.Ne1 Qg5–/+ 11.Kh2 Nd5 12.c4=+ Bf6 13.f4 Qh4 14.Qb3 Bb2 15.Qb2 Nf6 16.Nc3 Re8 17.Nc2 Nh5 18.Bh5 Qh5 19.Nd4 Na6 20.Rfb1 Nc5 21.Qb6 Qh4 22.Qc7 Qe7 23.Qe7= Re7 24.Rb4 h6 25.Nb3 Be6 26.Nc5 dc5 27.Ra4 Ra4 28.Na4 Bc4 29.Nc5 b6 30.Na4 b5 31.Nb6 Bb3 32.Rb1 Ba2 33.Rb2 Rb7 34.Ra2 Rb6 35.Rc2 Ra6 36.Rc3 f6 37.Kg3 Kf7 38.f5+/– g5 39.fg6 Kg6 40.Kf4 f5 41.Ke5 Kg5= 42.g3 Ra5 43.Kd6+= Ra8 44.Kc6+/– Rc8 45.Kb5+– Rc3?? 46.dc3 h5 47.c4 h4 48.gh4 Kh4 49.c5 f4 50.ef4 e3 51.c6 e2 52.c7 e1Q 53.c8Q Qb1 54.Kc6 Qc2 55.Kb7 Qb3 56.Kc7 Qc4 57.Kd8 Qg8 58.Kd7 Qf7 59.Kc6 Qc4= 60.Kb7 Qb3 61.Kc7 Qc4+/– 62.Kd7 Qf7+= 63.Kd6 Qf4 64.Kd5 Qd2 65.Ke4 Qe2 66.Kf4 Qf2= 67.Ke5 Qb2 68.Kf5 Qa3 ½–½. Szczesiak,Zenon – Ewert,Jerzy, corr 2. AMM Poland, 1994.

5.Bb2 d6 6.Bc4 Nf6 7.0–0 Be7 8.d3 0–0 9.Nbd2 Bg4 10.h3 Bf3 11.Nf3 Nbd7 12.Qd2 Qd2 13.Nd2 d5 14.Bb3 Bd6 15.e4 Rfe8 16.ed5 cd5 17.c4 d4 18.Rfe1 Nc5 19.Bc2 Na4 20.Ba4 Ra4 21.Ne4 (21.Nb3 Bb4 22.Re2 Kf8=) 21...Ne4–/+ 22.Re4 f5 23.Re2 Rea8 24.Bc1 e4 25.de4 d3 26.Rd2? (better is 26.Re3!? fe4 27.Re4+=) 26...fe4–+ 27.Kf1 (better is 27.f3 Rc4 28.fe4–+) 27...Rc4 28.Rb2 Be5 0–1. retiarius – thenash, ChessWorld.net, 2012.

5.Bc3 Bb4 6.Bb4 Qb4 7.Nc3 =.

5.Bc3 Bb4 6.Qg4 Bc3 7.Nc3 g6 +=.

5.Bc3 Bb4 6.Qg4 g6?? 7.Qb4+– Qb4 8.Bb4 Na6 9.Bd6 f6 10.Nc3 Nh6 11.Ne4 Ng8 12.Bc4 (12...f5 13.Be5 fe4 14.Bh8+–) 1–0. Rosner,Dirk (1930) – Hasler,Ueli, CiF, 2006.

5.Bc3 Qc7 =.

5.c4 Nf6 6.Nc3 Ba3 7.Ba3 Qa3 8.Qc1 0–0 9.Qa3 Ra3 10.Nf3 d6 11.Be2 Na6 12.0–0 Nb4 13.Bd1 Be6 14.Bb3 Rfa8 15.Rab1 c5 (15...Bf5 16.Rb2–/+) 16.Ng5 (better is 16.Nb5!?+=) 16...Bf5 17.Ra1 (17.e4 Bd7+=) 17...Bd3 18.Rfc1 h6 19.Nf3 Ne4 20.Ne4 (20.Rd1!?–/+) 20...Be4–+ 21.Ne1 ½–½. Berner,Stephan (1755) – Hoffmann,Paul (2035), GER schools Cup g'+3, 2004.

5.c4 Nf6 6.Nf3 Bd6 7.Bc3 Qc7 8.d3 c5 9.Be2 Nc6 10.0–0 0–0 11.Bb2 e4 12.de4+= Ne4 13.Bd3 f5 14.Be4+/– fe4 15.Qd5 Kh8 16.Qe4 Be7 17.Qg4 Bf6 18.Bf6 Rf6 19.Qh5 Qd8 20.Ng5 Qg8 21.Nc3 Ne7 22.Nce4 Rg6?? 23.Nd6!! Rg5 24.Nf7 Qf7 25.Qf7 Ng8 26.a4 Rg6 27.Rfd1 Raa6 28.Qf8 Rac6 29.f3 h6 30.a5 Kh7 31.Rab1 Rge6 32.Rb6! Rf6 33.Qd8 Rb6 34.ab6 Rc6 35.Qf8 d6 36.Rd6 Rd6 37.Qd6 Nf6 38.Qd3 g6 39.Qd8 1–0. "lasker" (1950) – thotares (1630), internet, 2007.

5.c4 Nf6 6.Nf3 e4 7.Bf6 gf6 8.Nd4 h5 9.f4 f5 10.Nc3 Bb4 11.Nb3 Qa7 12.Qc2 h4 13.Be2 Rg8 14.g4 d6 15.gf5 Bc3 16.Qe4 Kd8 17.dc3 Re8 18.Qd4 Qd4 19.ed4 Bf5 20.Kd2 Rg8 21.Bf3 Nd7 22.Rhe1 Nb6 23.c5 Nc4 24.Kc1 Kd7 25.cd6 Rae8 26.Kd1 Kd6 27.Re8 ½–½. Brennecke,Willi – Moeller,Reinhold, DESC, 2001.

5.Be2 Qb6 6.Bc3 Nf6 7.Bf6 ef6 8.Nf3 Bf5 9.Nc3 Bd6 10.0–0 0–0 11.Nh4 Be6 12.Bd3 Be5 13.Qh5 g6 14.Ng6 fg6 15.Bg6 Qc7 16.Bd3 Ra3 17.f4 Bc3 18.dc3 Qe7 19.Rf3 Rc3 20.Rh3 Bh3 21.Qh3 Ra3 22.Re1 Kh8 23.e4 Ra2 24.Kf1 Ra4 25.Qf5 Re8 26.e5 Nd7 27.Re3 fe5 28.fe5 Rf8 0–1. DKCozy – Bauernopfer, playchess.de, 2001.

5.Nf3 e4 6.Nd4 =.

5.Qh5 d6 6.Bc4 g6 7.Qf3 Qc7 8.Qe2 Bg7 9.d3 Nf6 10.Nf3 0–0 11.0–0 b5 12.Bb3 Nbd7 13.a4 Nc5 14.ab5 Ra1 15.Ba1 cb5 16.Nc3 Nb3 17.cb3 Bd7 18.b4 Qb7 19.e4 Bc6 20.Rc1 Nh5 21.Qe3 f5 22.Rc2 Nf4 23.Ra2 Ra8 24.Ra8 Qa8 25.Bb2 Qb7 26.Ne1 d5 27.ed5 Bd5 28.Nd5 Nd5 29.Qe2 Qe7 30.Nf3 Nf4 31.Qd2 Qd6 32.Ne1 Kf7 33.Qe3 Qb4 34.Be5 Be5 35.Qe5 Qe7 36.Qe7 Ke7 37.g3 Ne2 38.Kg2 b4 39.Nf3 b3 40.Nd2 b2 41.Nb1 Nc1 42.Kf3 Nd3 43.Ke2 Ne5 44.Kd2 Ng4 45.Kc2 Nf2 46.Kb2 Ng4 47.h4 Kd6 48.Kc1 Nf2 49.Nd2 Kd5 50.Kc2 Nh1 51.Nf3 Ng3 52.Kd2 f4 0–1. Rayetzky – Roos, email 4AMM–07 1997.

5.Nf3 d6

6.Bc3 Qc7 7.Be2 =.

6.Bc3 Qd5 7.d4 =.

6.Bc4 e4 7.Nd4 Qb4 8.Bb3 Nf6 9.0–0 c5 10.Ne2 Be7 11.d3 ed3 12.cd3 Be6 13.Nd2 Bb3 14.Nb3 Nbd7 15.Ng3 Ne5 16.Nf5+/– White gets strong initiative 16...g6 17.Ne7 Ke7 18.f4 Ned7 19.e4 Rhd8 20.e5 de5 21.fe5+/– Ng4 22.Qf3 Rf8 23.Qg3+– Ra2 24.Ra2 Qb3 25.Rfa1 Qe6 26.Qh4 g5 27.Qg5 f6 28.ef6 Ndf6 29.Bf6 Rf6 30.Ra4 c4 31.Rc4 Qb6 32.Qc5 Qc5 33.Rc5 Rd6 34.Rg5 Nf6 35.Rg7 Ke6 36.Rb7 Rd3 37.Ra6 Rd6 38.Rd6 Kd6 39.Kf2 Ke6 40.Kf3 Kf5 41.Rb5 Kg6 42.g4 h5 43.h3 hg4 44.hg4 Ne8 45.Kf4 (45...Kg7 46.Rb7 Kg6 47.Rb6 Kf7 48.Ke5+–) 1–0. Skonieczny,Jerzy – Ewert,Jerzy, corr 2. AMM Poland, 1994.

6.Bc4 Nf6 7.0–0 =.

6.Be2 e4 7.Nd4 Qg5 8.Bf1 Bg4 9.f3 Bh5 10.c4 Qh4 11.g3 Qf6 12.Qb3 ef3 (12...Bf3? 13.Qb7 Qd8 14.Nf3+– (14.Qa8?! Bh1 15.Nc6 Nc6 16.Qc6 Qd7 17.Qd7 Kd7+–)) 13.Kf2 Nh6?? (13...Nd7 14.Nc6 (< 14.Qb7 Rb8 15.Qc6 Rb2–/+) 14...Nc5 15.Bf6 Nb3 16.ab3 Ra1 17.Ba1 bc6 18.d3+/–) 14.h3?? (Better is 14.Qb7 Ng4 15.Ke1 f2 16.Kd1 Ne5 17.Kc1+–) 14...Qe7=+ 15.Nf3 Nd7 16.d4 (< 16.Qb7 Rb8 17.Qc6 Rb2–/+) 16...f5 17.Bd3 (< 17.Qb7 Rb8 18.Qc6 Rb2 19.Nfd2 Rb6 20.Qc8 Kf7–/+) 17...Nf6 18.Nbd2 Ne4 19.Kg2 g5 20.d5 Rg8 21.dc6 bc6 22.Be4 fe4 23.Nd4 Rc8 24.a4 g4 25.h4 Bf7 26.a5 d5 27.a6 Qb4 28.Qc2+/– Bg7 29.a7 Kd7 30.Rhb1+– Qd6 31.Bc3 Bd4 32.Bd4+– Nf5 33.Nf1 Qc7 34.Qb2 Nd4 35.Qd4 Ra8 36.Nd2 Rge8 37.cd5 Bd5 38.Nc4+– Ke6 39.Nb6 Rf8?? 40.Na8 Ra8 41.Qb6 Qf7 42.Rf1 Qe8 43.Qb7 Bc4 44.Rf4 Kd6 45.Qb4 Kd5 46.Rd1 Bd3 47.Qd4 1–0. Stabenow,Juergen – Diener,Rudolf, corr ICCF–T/19–F, 1979.

6.Be2?! Nf6 7.0–0 Be7.

5.Nf3 f6

6.c4 Bc5 7.g3 Ne7 8.Nc3 d5=+ 9.cd5 cd5 10.Bg2 e4 11.Nh4 Be6 12.Qb3 Kf7 13.Qb7–/+ Opening the b–file gets Black a lot of play 13...Nbc6 14.Qb5 Rhb8 15.Qa5 Ra5 16.0–0–0 Nb4 17.d4–/+ Bd6 18.Kb1 Nd3–+ 19.Rd3 ed3 20.Rd1 Bb4 21.Ka1 Rba8 22.Rd3 Bc3 (23.Rc3 g5–+ (23...Ra2?! 24.Kb1–+)) 0–1. Brzoza,Miroslaw – Mus,Roman, corr 1. AMM Poland, 1991.

6.c4 d5 =.

6.Be2 d6 7.0–0 Be6 8.c4 Ne7 9.d4 e4 10.Nfd2 f5 11.f3 d5 12.Nb3 Qc7 13.Nc5 Bf7 14.Nd2 Ng6 15.cd5 Bd5 (15...cd5!? 16.Bb5 Nc6+=) 16.fe4+/– fe4 17.Nce4 (worse is 17.Nde4 b6–/+) 17...Ra2 18.Ra2 Ba2 19.Bc4 Bc4 20.Nc4 Be7? (better is 20...b5 21.Ne5 Ne5 22.de5 h5+/–) 21.d5+– cd5 22.Qd5 Rf8 (22...Qc6 23.Ncd6 Kd7 24.Qf5 Kc7 25.Qa5 Kd7 26.Nc5 Qc5 27.Qc5 Nc6 28.Bg7 Rd8+–) 23.Ncd6 Bd6 24.Nd6 (24.Qd6?! Rf1 25.Kf1 Qc4 26.Kf2 Qc2 27.Kg3 Qe4 (worse is 27...Qb2 28.Qb8 Kd7 29.Nc5 Kc6 30.Qc8 Kd5 31.Qb7 Qb7 32.Nb7+=) 28.Qb8 Kd7=) 24...Ke7 25.Nf5 Rf5 (25...Ke8 26.Ng7 Qg7 27.Bg7 Rf1 28.Kf1+–) 26.Rf5 (26.Ba3 Ke8 27.Qg8 Rf8 28.Bf8 Ne7 29.Be7 Ke7 30.Qg7 Kd6 31.Rd1 Ke6 32.Qc7 Kf6 33.Rd6 Kf5 34.Qa5 Ke4 35.Qd5 Ke3 36.Qe5#) 26...Ke8 (26...Nd7 27.Qg8 Ngf8+–) 27.Qg8 Kd7 28.Rd5 (28.Rd5 Ke7 29.Qg7 Ke6 30.Qc7 Kd5 31.Qb8+–) 1–0. Dziel,Jaromir – Gugulski,Marcin, corr 2AMM Poland, 1994.

6.Be2 d5

7.Bc3 Qc7 8.0–0 =.

7.c4 dc4 8.Bc4 e4 =.

7.0–0 Bd6

8.Bc3 Qc7 9.d4 e4 –+.

8.c4 e4 9.Nd4 =.

8.c4 Be6 9.cd5 cd5 10.Qb3 Bb4 11.a3 (11...Bd6 12.Qb7+/–) 1–0. Woschkat,Karl_Heinz (1835) – Kondziela,Andreas, VM2001 (VR Gr.2), 2001.

8.c4 Ne7 9.d4 e4 10.Nfd2 Qb6 11.Qc2 Qc7 12.h3 0–0 13.c5+= Bh2 14.Kh1 Nd7 15.Nc3 f5 16.f4 Bg3= 17.a4 Nf6 18.Nb3 Ng6 19.Bd1 Qf7 20.Ne2 Nh5 21.Kg1 Bh4 22.Kh2 Re8 23.g3 Bd8 24.Ng1 Nf8 25.Qe2 Nf6 26.a5 Ne6 27.Bc3 Nc7 28.Qc2 Nb5 29.Be1 Qg6=+ 30.Kg2 Be6 31.Be2 Kh8 32.Qd1 Bc7 33.Qc1 h5 34.h4 Bg8 35.Nh3 Ra7 36.Ng5 Ng4 37.Bd2 Rf8 38.Bg4 fg4=+ 39.Bb4 Bd8 40.Qd2 Nc7 41.Qe2 Ne6 42.Ne6 Qe6 43.Rh1 Bh7 44.a6 Be7 45.Bc3 Rb8 46.ab7 Rab7 47.Nd2 Qf6 48.Ra5 Rb5 49.Ra3 Qf5 50.Ra6 Qe6 51.Rha1 Qd7 52.Qd1 Qc8 53.R1a4 Bg6 54.Ra7 R5b7 55.R7a6 Be8 56.Ra3 Qf5 57.Ra1 (57.Rb3 Rb3 58.Nb3 Qc8=+) ½–½. Piszcz,Kazimierz – Brzoza,Miroslaw, corr 2. AMM Poland, 1994.

8.d3 c5 9.Nbd2 Nc6 10.Nb3 Qb6 11.Nfd2 Nge7=+ 12.c4 d4 13.Ne4+= Na5 14.ed4 ed4 15.Bd4 cd4 16.c5 Bc5 17.Nec5 Nb3 18.Nb3 Nd5 19.Bf3 Nc3 20.Re1 Kf7 21.Qc2 Be6 22.Bb7 Ra3 23.Bf3 Rc8 24.Qd2 g5 25.h3 Bb3+= 26.ab3 White gets strong initiative 26...Rb3 27.Bh5 Kg7 28.Re7+= Kh8 29.Bg4 Rb8 30.Qe1 Qc6 31.Bf3+/– Qc8 32.Kh2 Qc5?? 33.Raa7+– Qd6 34.g3 Kg8 35.Rg7 (35...Kh8 36.Rh7 Kg8 37.Rhe7+/–; 35.Re8 Re8 36.Qe8 Qf8+–) 1–0. Gruszczynski,Boleslaw – Mus,Roman, corr 1. AMM Poland, 1991.

8.d3 Ne7

9.Bc3 Qc5 =.

9.Bc3 Qc7 10.Nbd2 =+.

9.c4 Be6 =.

9.Nbd2 0–0 10.c4 =+.

9.Nbd2 0–0 10.d4 e4 11.Nb3 –/+.

9.Nbd2 Be6 10.Nb3 Qc7=+ 11.e4 d4 12.Nh4 c5 13.c4 Nbc6 14.a3 0–0 15.Bg4 Bf7 16.Bc1 b6 17.Qf3 Rfb8 18.Qg3 Nd8 19.Nd2= b5 20.cb5 Rb5 21.a4 Rba5=+ 22.Bd1 Rb8 23.Nc4= Ra6 24.Nd6 Qd6 25.f4 Ndc6 26.f5 Kh8=+ 27.Qh3 Na5 28.g4 Nb3 29.Bb3 Rb3 30.g5 Qd7 31.gf6 gf6 32.Ra2 Rb8 33.Rg2 Rg8 34.Rg8=+ Ng8 35.Ba3 c4–/+ 36.dc4 d3 37.Bc5 Ra4 38.Rd1 Rc4 39.Bf2 Re4 40.Rd3 Rg4 41.Qg4 Qd3 42.Qb4 Bc4 (43.Kg2 Qe4 44.Kg1 Qe2–+) 0–1. Pegiel,Marek – Mus,Roman, corr 2. AMM Poland, 1994.

9.Nbd2 Be6 10.c4 0–0 =.

9.Nbd2 Be6 10.c4 Nd7 11.h3 0–0=+ 12.Qc2 Ra7 13.Rfc1 b6 14.a4 Nc5 15.Bc3 White gets deadly initiative 15...Qa6 16.d4 Bf5 17.Qd1 Nd3 18.Bd3+= Bd3 19.de5 fe5 20.Be5 Be5 21.Ne5 dc4 22.Ndc4 Bc4 23.Nc4 Nd5 24.Ne5+– (24...Rd8 25.Nc6+– (25.Rc6?! Qa5+–)) 1–0. Dziel,Jaromir – Mus,Roman, corr 2. AMM Poland, 1994.

6.Be2 d6

7.0–0 b5 8.c4 =.

7.0–0 d5 8.d4 e4 9.Bc3 =.

7.0–0 Be6 8.Nc3 Nd7 9.a3 Nh6 10.Ne1 Nf7 11.Nd3 d5 The pressure on the isolated pawn grows 12.Nc1 Bd6=+ 13.Bg4 Ke7 14.Nb3 Qc7 15.Be6 Ke6 16.e4 d4 17.Qg4 Ke7 18.Ne2 g6 19.Nec1 Rag8 20.Nd3 h5 21.Qg3 Ng5 22.f3 h4= 23.Qe1 Ne6 24.Kh1 g5 25.Qe2 Ndf8 26.a4 Nf4 27.Qd1 N8g6 28.Nbc1 Qd7 29.Rf2 Nd3 30.Nd3 Nf4 31.Qf1 (31.Nf4 gf4 32.h3 Kd8=) ½–½. Wlosek,M – Gugulski,Marcin, corr 2. AMM Poland, 1994.

7.0–0 Be6 8.c4 d5 9.cd5 Bd5 10.d4 =.

7.0–0 Be6 8.c4 e4 9.Nd4 Bf5 +=.

7.0–0 Be6 8.c4 Ne7 9.d4+= e4 10.Nfd2 f5 11.f3 d5 12.Nb3 Qc7 13.Nc5 Bf7 14.Nd2 Ng6 15.cd5+= Bd5 16.fe4+/– fe4 17.Nce4 Ra2 18.Ra2 White gets the initiative 18...Ba2 19.Bc4 Bc4+= 20.Nc4 Be7? 21.d5+– cd5 22.Qd5 Rf8 23.Ncd6 Bd6 24.Nd6 Ke7 25.Nf5 Rf5 26.Rf5 Ke8 27.Qg8 Kd7 28.Rd5 (28...Qd6 29.Rd6 Kd6 30.Qb8 Ke6 31.Qg8 Kd6 32.Qh7+–) 1–0. Dziel,Jaromir – Gugulski,Marcin, corr 2. AMM Poland, 1994.

7.c4 e4 8.Nd4 =.

7.c4 Be6 8.0–0 Ne7 9.Bc3 Qa4= 10.d3 Nd7 11.Qd2 d5 12.Bd1 Qa6=+ 13.cd5 Nd5 14.d4 e4 15.Be2 Qb6 16.Ne1 Bd6 17.f3 ef3 18.Bf3 0–0 19.a4 Nc3 20.Nc3 Ra5 21.Nc2 Qc7=+ 22.g3 Rfa8 23.Rfb1 Nb6–/+ 24.Ne4 Be7 25.Nc5 Bc5 26.dc5 Rc5 27.Qb4? Rc2–+ 28.Qb6?? Qb6 29.Rb6–/+ Bc8 30.Bd1 Rc3 31.Bb3 Kf8 32.Rd1 Ke7 33.Kf2–/+ Ra5 34.e4 Re5 35.Re1–/+ Kd6 36.Bg8 h6 37.Rbb1 Kc7 38.Bh7 Rc4 39.Rb2 Ra4 40.h4 Be6 (41.Rd1 h5–+) 0–1. Gugulski,Marcin – Mus,Roman, corr 2. AMM Poland, 1994.

4.e3 e6

5.Nf3 d5 6.Be2 Qb6 7.Qc1 Nd7 8.0–0 Ngf6 9.d3 Bd6 10.Nbd2 0–0 11.c4 dc4 12.Nc4 Qc7 13.Nd6 Qd6 14.Rd1 b5 15.Nd4 Bb7 16.Bf3 Rfc8 17.Ne2 h5 18.Nc3 h4 19.h3 Ne5 20.Be2 b4 21.Ne4 Ne4 22.de4 c5?? (better is 22...Qc7 23.Qc5 f6+/–) 23.Rd6+– (23.Rd6 Ng6 24.Qc4+–) 1–0. exp2005 – martijn011, kurnik, 2011.

5.Nf3 d5 6.Be2 c5 7.0–0 Nd7 8.d3 (8.a4 Ngf6+=) 8...Ngf6= 9.Qd2 (9.c4 Bd6=) 9...Qc7 (9...Bd6 10.c4=) 10.h3 Bd6 11.Nc3 Qb6 12.Rfb1 0–0 13.a4 Qd8 14.Nb5 Be7 15.Ne5 Nb8 16.Qd1 Nc6 17.c4 Nd7 18.Nc6+= bc6 19.Nc3 d4 20.Ne4 Nf6 21.Bf3 Ne4 22.Be4 Bf6? 23.Bc6 de3?? 24.Ba8+– ef2 25.Kh1 Bb2 26.Rb2 Qd4 27.Raa2 Bd7? 28.Bf3 e5 29.Rf2 Be6 30.Qe2 Rb8 31.Rb2 (31…Re8 32.Qe4+–) 1–0. Ruhle,Ernst Albrecht – Schiffler,Gerhard, Wch Seniors Bad Liebenzell, 1996.

5.Nf3 d5 6.Be2 Nf6 7.Bc3 Bb4 8.Bb4 Qb4 9.0–0 =.

4.e3 Nf6

5.c4 e6 6.Nf3 Be7 7.Be2 0–0 8.0–0 d5 9.d4 Nbd7 10.c5 b5 11.cb6 Qb6 12.Bc3 Ba6 13.Nbd2 Be2 14.Qe2 Qa6 15.Qa6 Ra6 16.Rfb1 h6 17.Rb7 Rfa8 18.Ne5 R6a7 19.Ra7 Ra7 20.Nc6 Ra3 21.Ne7 Kh7 22.Bb4 Ra4 23.a3 Nb6 24.Nb3 Nc4 25.Nc5 Ra8 26.Nc6 Ne8 27.a4 Nc7 28.a5 Nb5 29.a6 Na7 30.Na7 Ra7 31.Nd3 Ra8 32.Bc5 1–0. lendzior (1685) – fakejake (1750), kurnik, 2012.

5.Nf3 (--> 4.Nf3 Nf6 5.e3).

4.Nf3 Qb6

5.Qc1 e6 6.e3 f6 7.Nc3 Bb4 8.Rb1 Ne7 (8...d5!?+=) 9.Ne4+/– Qc7 (9...0–0 10.a3 Ba5 11.Bf6+/–) 10.Bf6+– Ba3 11.Bb2 d5 (11...Bb2 12.Qb2 (12.Rb2?! d5 13.Ng3 0–0+/–) 12...0–0 13.Bd3+–) 12.Ba3 de4 13.Ng5 Qe5 (13...Qa5 14.Be7 Ke7 15.Ne4+–) 14.f4 (better is 14.h4+–) 14...Qf6?? (14...ef3 15.Nf3 Qa5+–) 15.Ne4 Qh6 (15...Qg6 16.Bd3 Qg2 17.Nd6 Kd7 18.Be4+–) 16.Nd6 Kd8 (16...Kd7 17.Nf7 Qh4 18.g3 Qf6 19.Nh8 Qf8+–) 17.Nf7 Kd7 18.Nh6 (18.Nh6 gh6 19.Rb3+–) 1–0. pierred – anony, internet, 2015.

5.Qc1 Nf6 6.e3 d5 7.c4 Bg4 8.Bf6 gf6 9.cd5 cd5 10.Nc3 e6 11.Rb1 Qc7 12.Qb2 Bf3 13.gf3 Nc6 14.Qb7 Ra7 15.Qc7 Rc7 16.Rg1 Kd7 17.Bb5 Bd6 18.f4 Rhc8? (Better is 18...Ke7!?+/–) 19.Rg7+– Ke7 20.Bc6 Rc6 21.Rh7 d4 22.Nb5 d3 23.Nc3 Rc4 24.f3 Bb4 25.Rb3 Bc3 26.dc3 Rc3 27.Rc3 Rc3 28.Kd2 Rc2 29.Kd3 Ra2 ½–½. Woschkat,Karl_Heinz – Teknis,Joannis, IECG, 1998.

4.Nf3 d5

5.Bc3 Qb6 6.e3 Bg4 7.Be2 Nd7 8.a4 e6 9.a5 Qc7 10.0–0 Ngf6 11.h3 Bh5 12.d3 Bd6 (12...Bf3!? 13.Bf3 Bd6=) 13.g4+= Bg6 (13...Ng4 14.hg4 Bg4 15.Kg2+= (15.Bg7? Rg8–+)) 14.g5+/– Nh5 (14...d4!? 15.Bd4 e5+=) 15.Nfd2+– Bh2 16.Kh1 Ng3 (16...Nf4 17.ef4 Bf4 18.Bg7+–) 17.fg3 Qg3? (17...Bg3 18.Bg7 Rg8+–) 18.Nf3 (18.Bg7?! Rg8 19.Bg4 Rg7+/–) 18...Qh3 19.Nh2 h6 (19...Rg8 20.Qc1+–) 20.Bg7 Rh7 (20...hg5 21.Bh8 Qh8 22.c3+–) 21.gh6 (21.Rf3 Qh4 22.gh6 Qd8+–) 21...0–0–0 (21...Qe3 22.Qe1+–) 22.Rf3 (22...Qh4 23.Rf4+–) 1–0. market (1965) – Gambit_warrior (1655), GameColony.com, 2002.

5.e3 b5 6.Be2 =.

5.e3 Qb6 6.Bd4+= c5 7.Be5 Bg4 (7...Nc6 8.Nc3 Ne5 9.Ne5+=) 8.Nc3+= Qe6 9.Rb1?? (better is 9.Bb8 Rb8 10.Bb5 Kd8 11.Ng5 Bd1 12.Ne6 fe6 13.Rd1+=) 9...Bf3–+ 10.Qf3 Qe5 11.Nd5 (11.Qd5 Qd5 12.Nd5 Ra2 13.Rb7 Ra1 14.Ke2 Nc6–+) 11...Ra7 (11...Ra2 12.Rb7 Ra1 13.Ke2–/+) 12.Nc3 (12.Bb5 Nc6 13.Bc6 bc6–/+) 12...Qc7 (12...Nc6 13.Bb5 Qc7 14.Bc6 bc6 15.0–0–/+) 13.Nb5 Qb6 14.Qf4 (14.Bc4 Nf6–/+) 14...Na6–+ 15.Nc3 Qd6 (15...Qf6 16.Ba6 Qf4 17.Bb5 Kd8 18.ef4 e6+/–) 16.Qa4? (better is 16.Ba6 Ra6 17.Qd6 ed6 18.Rb7=+) 16...Kd8–+ 17.Qa5 Kc8?? (better is 17...Qc7 18.Rb6 Nf6–+) 18.Nb5+/– Qb8 19.Na7 Qa7 20.Rb6 c4? (better is 20...Kd7+/–) 21.Bc4+– Nf6 22.Ba6 ba6 23.Ra6 Qb8?? (23...Qb7 24.Ra8 Kd7+–) 24.Ra8 e6 25.Qc3 Kb7 26.Rb8 Kb8 27.0–0 Nd5 28.Rb1 Nb4 29.Qc6 Be7 30.c4 Rd8 31.c5 Bc5 32.Qc5 (32…Rd4 33.Qd4+–) 1–0. Woschkat,Karl_Heinz – Radford,Carl, compuserve, 1996.

5.e3 Bf5 6.c4 (6.Be2 b5=) 6...e6 7.cd5 ed5 8.Be2 Nd7 9.0–0 Ngf6 10.d3 (10.Nd4 Bg6=) 10...Be7 (10...Bd6 11.Qb3=) 11.Nbd2 (11.Bc3 Qa4=) 11...0–0 12.Nd4 Bg6 13.f4 h6 14.a4 (14.f5 Bh7=) 14...Bb4 (14...Rfe8 15.N2b3 Qd8 16.f5=) 15.N2b3 Qd8 (15...Qc7 16.Nc2 Bd6 17.a5=) 16.Nc2 Be7 (16...Bd6 17.a5=) 17.a5 Ne8 (17...Re8 18.Rb1=) 18.Ncd4 (18.Rb1 Nd6+=) 18...Nc7 (18...c5 19.Nb5=) 19.Qc2 (19.f5 Bh7+=) 19...Re8 (19...c5 20.Nf3=) 20.e4 de4 (20...c5 21.Rac1=) 21.de4+= Bf6 (21...Bd6 22.f5 Bh7 23.Nf3+=) 22.Bd3 c5 23.e5 Bd3= 24.Qd3 cd4 25.ef6 Nf6 26.Nd4 Ne6 27.f5 Nd4 28.Qd4 Qd4 29.Bd4+= Red8 30.Bb6 (30.Bf6!? gf6 31.Rfb1+=) ½–½. Kucharkowski,Jens – Thorhauer,Rolf, CiF, 2003.

5.e3 f6 6.c4 Bg4 (6...e6 7.Nd4=) 7.cd5 (7...cd5 8.Qb3+=) +=. marekt – Kingslayer2, ChessWorld.net, 2003.

5.e3 Nf6

6.Bc3 Qc7 7.Be5 =.

6.c4 dc4 7.Bc4 b5 8.Bc3 Qa6 9.Be2 Bg4 10.a4 Bf3 11.gf3 Qb7 12.Qb3 Nd5 13.Bb2 b4 14.d4 e6 15.Nd2 Qc7 16.f4 Nd7 17.Bf3 Qd8 18.Rg1 Qh4 19.a5 Rg8 (19...Qh2?? 20.Rh1 Qh1 21.Bh1+–) 20.Be4 Qh5 (20...Qh2?? 21.Rh1 Qh1 22.Bh1+–) 21.Rg2 Ra6 22.Qd3 Nc7 23.Bh7 Rh8 24.Be4 Ra5 25.Ra5 Qa5 26.Bc6 Rh3 27.Nf3 b3 28.Kd1 Qa2 29.Qc3 Nd5 30.Bd5 ed5 31.Nh4?? (better is 31.Nd2+/–) 31...Rh4–+ (32.Qc8 Ke7–+) 0–1. Woschkat,Karl_Heinz – Appeldorn,Dirk, SE001 DESC, 1999.

6.c4 Bg4 7.Bc3 Qc7 8.Bf6 gf6 9.cd5 cd5 10.Nc3 e6 11.h3 Bh5 12.Rc1 Nc6 13.g4 Bg6 14.Qb3 h5 15.Rg1 Be4 16.Ne4 de4 17.Nd4 Nd4 18.Rc7 Nb3 19.ab3 hg4 20.hg4 Ra1 21.Ke2 b5 22.Rb7 b4 23.Rb8 Kd7 24.Rb7 Kd8 25.Rf7 Be7 26.f4 Ke8 27.Rg7 Kf8 28.Rg6 Kf7 29.f5 Rh2 30.Rg2 Rh1 31.Rf2 Rc1 32.g5 fg5 33.Re6 g4 34.Re4 g3 35.Rff4 Bd6 36.Rc4 Re1 37.Ke1 g2 (38.Ke2 g1Q–+) 0–1. Longo,Andrew (1805) – Bendig,Frank (2090), IECG, 2000.

6.Be2 Bg4 7.0–0 e6 8.d3 Bd6 9.Nbd2 0–0 10.h3 Bh5 11.Nb3 Qc7 12.Nfd4 Be2 13.Qe2 c5 14.Nf3 c4 15.dc4 dc4 16.Nbd4 c3 17.Nb5 cb2 18.Nc7 ba1Q 19.Ra1 Bc7 20.c4 Nc6 21.Nd4 Ra4 22.Qc2 Rfa8 23.Nb5 Be5 24.Rd1 Ra2 25.Qd3 h6 26.f4 Bb2 27.Nd6 R2a7 28.Qb3 Ba3 29.f5 Bd6 30.fe6 Bc5 31.ef7 Kf7 32.Qb5 Be3 33.Kh1 Bf4 34.Qf5 Ra1 35.Qd3 Rd8 36.Ra1 Rd3 37.Rf1 g5 38.g3 Bg3 39.h4 gh4 40.Kg2 Ne5 41.c5 Rc3 42.Rb1 Rc5 43.Rb7 Kg6 44.Rb2 Nh5 45.Kh3 Nf4 0–1. bratek55 (1655) – beginner2011 (1675), kurnik, 2012.

6.Be2 Bg4 7.h3 Bh5 (7...Bf3 8.Bf3 Nbd7 9.Bc3=+) 8.0–0 (8.Bc3 Qa4=) 8...Nbd7 (8...b5=) 9.Nd4 (9.Nc3!?=) 9...Be2=+ 10.Qe2 (10.Ne2 e5=+) 10...e5 11.Nb3 Qb6 (11...Qa6 12.d3=+) 12.d3 (12.Nc3 Bb4=+) 12...Bd6 13.Nc3 (13.a4 Bb4=+) 13...0–0 14.e4 (14.Rfb1 Qc7=+) 14...d4 15.Nd1 (15.Nb1 Ra4–/+) 15...Ra6 (15...Ra4 16.c3–/+) 16.c3 (16.a4 Rfa8 17.a5 Qc7=+) 16...c5 (16...dc3 17.Nc3 Rfa8 18.Rfb1=+) 17.cd4 (17.Nc1 dc3 18.Nc3 Rfa8=+) 17...cd4 (17...ed4 18.Qc2–/+) 18.f3 (18.f4 Rc8=) 18...Nh5–/+ 19.Kh2 (19.Qc2 Ng3 20.Rf2 f5=+) 19...Nf4 20.Qc2 Rfa8 (20...Qc6 21.Qc6 Rc6 22.Nf2–/+) 21.g3 (21.Bc1 Ne6–/+) 21...Ne6–/+ 22.Bc1 Qa7 23.Nf2 Ra2 24.Ra2 Qa2 25.Qa2 Ra2–+ 26.Kg1 Ndc5 27.Nc5 Nc5 28.Rd1 b5 29.Bd2 Na4 30.f4 f6 31.Kf1 b4 32.Ke1 b3 33.Rb1 b2 34.Bc1?? Ra1 (35.Rb2 Nb2–+) 0–1. Shakkimestari – smurilo (1845), internet, 2006.

5.e3 Bg4

6.c4 Nd7 7.Bc3 Qa4 8.Qa4 Ra4 9.cd5 Bf3 10.gf3 cd5 11.Bb5 Ra8 12.Rg1 f6 13.Bb4 Rd8 14.Nc3 e6 15.Bf8 Kf8 16.Na4 Ne7 17.Bd7 Rd7 18.Nc5 Rd6 19.Nb7 Rb6 20.Nc5 Kf7 21.f4 Ra8 22.a4 Nf5 23.Ke2 Nd6 24.Rgb1+/– Rb1 25.Rb1 Ra7 26.Rb6 Ke7 27.d4 e5 28.fe5 fe5 29.de5 Nc4 30.Re6 Kf7 31.Ra6 Ra6 32.Na6 Ne5 33.Nc7 (33...Nc4 34.Nd5+–) 1–0. Hoch,Hubertus (2165) – Walter,Mario (1885), RSX9E – A00 – Sokolsky–2, 2004.

6.c4 e6 7.Bc3 Qc7 8.h3 Bf3 9.Qf3 Nd7 10.d4 Ngf6 11.Bd3 dc4 12.Bc4 Bd6 13.0–0 0–0 14.Nd2 Nd5 15.Bb2 N7b6 16.Bb3 Na4 17.Bc1 Bb4 18.e4 Nf6 19.Nb1 e5 20.Bg5 ed4 21.Bf6 gf6 22.a3 Be7 23.Rd1 Qe5 24.Ba4 Ra4 25.Nd2 Rd8 26.Qd3 b5 27.Rdc1 Qe6 28.Nf3 Rda8 29.Rd1 Bc5 30.Qc2 Rc4 31.Qe2 f5 32.e5 f6 33.Re1 fe5 (33...Ba3?! 34.Qd3 Rca4 35.Nd4=) 34.Ne5 Rca4 (34...Ra3?! 35.Ra3 Ba3 36.Qd2=; 34...Ba3 35.Nc4 Qe2 36.Re2 bc4 37.Rea2+=) 35.Qf3 (35.Rac1!? Bd6 36.Nc6 Qe2 37.Re2 Ba3 38.Rd1–/+) 35...Bb4!–+ 36.Re2 Ra3 37.Ra3 Ra3 38.Nc6 Qd7 39.Ne5 Rf3 40.Nd7 Rb3 41.Re1 0–1. Schuelert,Peter – Bellmann,Herbert (2165), GER M083 corr, 1998.

6.c4 e6 7.cd5 ed5 8.a4 Nd7 9.Bc3 Qc7 10.d3 Ngf6 11.Nbd2 Bd6 12.Be2 0–0 13.h3 Bh5 14.a5 Rfe8 15.0–0 c5 16.Re1 d4 17.ed4 cd4 18.Bd4 Bb4 19.g4 Bg6 20.Qb3 Ba5 21.Rec1 Qf4 22.g5?? (22.Be3 Re3 23.fe3 Qe3 24.Kf1–/+) 22...Nh5?? (22...Bd2 23.Ra8 Ra8–/+ (< 23...Bc1 24.Qb7 Rf8 25.gf6 gf6 26.Rf8 Nf8 27.Qe7+=)) 23.Qb7=+ Qf5 24.Be3 Qh3 25.Nh2 Rab8 26.Qf3 Re3 27.fe3 Qg3 28.Qg3 Ng3 29.Kf2 Bd2 30.Rc7 Nf8 31.Kg3 Be3 32.Rc4 Bg5 33.Nf3 Bf6 34.d4 Be4 35.Ra5 Rb2 36.Bd1 g6 37.Kf4 Bf3 38.Kf3 Rd2 39.Ba4 Bd4 40.Rc2 Rc2 41.Bc2 Ne6 42.Rd5 Kg7 43.Bb3 Kf6 44.Ke4 h5 45.Rd4 Nd4 46.Kd4 Kg7 47.Ke5 f6 48.Kf4 Kh7 49.Bf7 Kh6 ½–½. Schueller,Rudolf (1865) – Koslowski,Volker (1985), T0076 DESC, 2003.

6.c4 e6 7.cd5 ed5 8.Be2 Nd7 9.0–0 Ngf6 10.Ne5 Ne5 11.Be5 Be2 12.Qe2 Be7 (12...Nd7 13.Bd4=) 13.d4 (13.d3 0–0=) 13...0–0=+ 14.Nd2 Qa6 15.Qd1 Qd3 16.Bf6 Bf6 17.Nf3 Qd1 18.Rfd1 Ra6 19.g3 (19.Rab1 b5=) 19...Rb8 (19...Rfa8 20.Rab1 R8a7 21.Rd2=+) 20.Rdc1 ½–½. Ganesan – Steuer, email 4AMM–F, 1998.

6.Be2 Nd7 7.0–0 Qb6 8.Bc3 Bf3 9.Bf3 e5 10.d3 f5 11.Bd2 Ngf6 12.c4 e4 13.de4 de4 14.Be2 Bd6 15.Nc3 0–0 16.Qb3 Qb3 17.ab3 Be5 (17...Nc5 18.Ra8 Ra8 19.b4–/+) 18.Rab1 (18.b4 Rfd8+=) 18...Rfd8–/+ 19.Rfd1 Nc5 20.g3? (20.Be1 Rd1 21.Nd1 Ra2–/+) 20...Ra3 (better is 20...Rd2!? 21.Rd2 Bc3–+) 21.Na4 Nb3 22.Be1 Rd1 23.Bd1 Ra4 24.Bb3 Ra1 25.Ra1 Ba1 26.Bb4 Kf7 27.h3 Ke6 28.Kf1 g5 29.Ke2 h5 30.Kd2 Be5 31.Ke2 Nd7 32.Ba3 Bc3 33.f3 ef3 34.Kf3 Nf6 35.c5 Ke5 36.Bc4 g4 37.hg4 hg4 38.Kg2 Nd5 39.Kf2 Ke4 40.Bd5? (better is 40.Ke2–+) 40...cd5 41.Ke2 Be5 42.Kf2 Kd3 43.Bb4 Bc3 44.Ba3 Bd2 45.c6 (45.Kf1 Be3 46.Bb4 Ke4–+) 45...Be3 46.Kg2 bc6 47.Bd6 c5 48.Be5 c4 (48...c4 49.Kf1 c3–+) 0–1. mr5reasons1 (1630) – pho323 (1765), gameknot.com, 2012.

6.Be2 Nd7 7.0–0 Ngf6 8.d3 Qc7 9.h3 Bh5 10.Nbd2 e5 11.c4 Bg6 12.cd5 Nd5 13.Nh4 Ba3 14.Ng6 hg6 15.Qc1 Bd6 16.Nc4 Be7 17.Bf3 Bf6 18.d4 ed4 19.Bd4 Bd4 20.ed4 0–0 21.Re1 Rfe8 22.Qd2 N5b6 23.Nb6 Nb6 24.Re8 Re8 25.Re1 ½–½. Skerlik,Stanislav – Hess,Helmut, corr ICCF EU/M99, 2001.

6.Be2 Nd7 7.0–0 Ngf6 8.d3 e6 9.Nbd2 Ba3 10.Nb3 (10.Ba3 Qa3 11.c4 Bf3 12.Nf3 dc4 13.dc4 Nc5+=) 10...Qb4 11.c3 Qa4 12.Qc2 Bb2 13.Qb2 Qa3 14.Qc2 0–0 15.Rfb1 Ra7 16.Ne1 (16.h3 Bf3 17.Bf3 h6+=) 16...Bf5 17.Nd4 Bg6 18.Qd2 (18.Ndf3 h6–/+) 18...Rfa8 (18...e5 19.Nb3–/+) 19.Rb3 (19.f4 Qe7–/+) 19...Qd6 (19...Qe7 20.Ndf3–/+) 20.Rb2 (20.f4 e5 21.fe5 Ne5–/+) 20...Nc5 (20...e5 21.Ndf3–/+) 21.f3 (21.f4!?+=) 21...e5–/+ 22.Nb3 Na4 23.Rc2 c5 24.Rcc1 (24.c4 d4–+) 24...Rd8 (24...b5 25.Nc2–+) 25.d4 (25.f4!?–/+) 25...ed4–+ 26.cd4 c4 27.Nc5 c3 (27...Nc5!? 28.dc5 Qe7 29.Nc2–+) 28.Rc3–/+ Nc3 29.Qc3 b6 (29...Rc8 30.Qb2–/+) 30.Nb3 (30.Ncd3 Rc7 31.Qb2 Bd3 32.Bd3 Rdc8–/+) 30...Rc7 (30...Re7 31.Qd2 Qe6 32.Kf2–+) 31.Qd2 Qa3 32.Bd3 Rdc8 33.Bg6 hg6 34.Rb1 (34.Qe2 Qe7–+) 34...Rc3 35.Rb2? (35.Rd1 g5–+) 35...Ne8 (35...Re3! 36.Qe3 Qb2 37.Qd2 Qd2 38.Nd2–+) 36.Qf2? (36.e4!? Nd6 37.ed5 Nf5–+) 36...Nd6 (better is 36...Re3! 37.Rd2 Qe7 38.Kf1–+) 37.Re2 Re8 38.g3 (38.g4 Qa8–+) 38...Qa6 39.Ng2 g5 40.h4 f6 (40...gh4 41.Nh4 Qd3 42.Ng2–+) 41.hg5 fg5 42.g4 (42.Rc2 Rc4–+) 42...Qd3 43.Rd2 (43.Nd2 Rc1 44.Ne1 Rd1–+) 43...Qb1 44.Kh2?? (44.Qf1 Qh7 45.Qe1–+) 44...Nc4 (better is 44...Re6–+) 45.Re2 Qh7 46.Kg1 Qd3 47.e4 (47.Qe1 Rc2 48.Rf2 Rf2 49.Qf2 Ne3 50.Ne3 Re3 51.Qd2 Rf3 52.Qd3 Rd3 53.Kg2–+) 47...de4 48.fe4 (48.Qf1 Ra8 49.f4 Rc2 50.Rc2 Qc2–+) 48...Rf8 49.Qe1 Qh3 50.d5 (50.Nd2 Qg4 51.Nf1–+) 50...Ne5 51.Nd4 Ng4 0–1. Mitrev,Emil (2155) – Vlashki,Nino (2250), Vidin BUL, 5th Balkan Amateur Open, 2014.

6.Be2 Nd7 7.0–0 Ngf6 8.d4 e6 9.Nbd2 b5 10.h3 Bf3 11.Bf3 Nb6 12.Nb3 Qa4 13.Nd2 Qb4 14.Qc1 Na4 15.Nb3 Be7 16.c3 Qd6 17.Nd2 0–0 18.e4 Qf4 19.e5 Nd7 20.Nb1 Qh4 21.Bg4 c5 22.Nd2 Qh6 23.Nb1 b4 (23...Qg6 24.Be2 cd4 25.Bb5 Ne5 26.cd4 Nf3 27.Kh1 Nh4–+ (27...Nb2?! 28.gf3 Na4 29.Rg1–+)) 24.Qh6= gh6 25.cb4 Nb2 26.bc5 Ra4 (27.Rc1 Nd3–+) 0–1. Woschkat,Karl_Heinz – Buessing,Olaf, BFH021 BdF, 1998.

6.h3 Bf3 7.Qf3 Nd7 8.Nc3 e6 9.Qg3 Ne7 10.h4? (10.e4 Qb4 11.Bc1 d4 12.Ne2 Ng6 13.Qb3=+) 10...Nf5 11.Qh3 d4 12.ed4 Nd4 (12...Qb6!?) 13.Bd3 Nc5 14.0–0 Rd8 (14...Nd3 15.Qd3 0–0–0 16.Rad1 Qb4–/+) 15.Rfe1 Nd3 16.Qd3 Nf5 17.Qe2 (17.Qe4 Rd2 18.Qf4 Rd8! (18...Rc2?! 19.Qb8 Qd8 20.Qb7=+)) 17...Qb4 18.Rab1 Qh4 19.Ne4 Be7 20.Be5 b5 (20...Rd7 21.Rb3 Qh6 22.Rd3 Rd3 23.Qd3 b5=) 21.a4 ba4 22.Qc4 0–0 23.Qa4 Rd5 24.d4 Rc8 25.Rb6 (25.c3 c5 26.Rb5 cd4 (26...Rcd8 27.Bc7 Rf8 28.dc5 Rc8 29.Rb8=) 27.Rd5 ed5 28.Qd7 Rd8 29.Qf5 de4 30.cd4=) 25...c5 26.Qa6 Rdd8 27.dc5 Bc5 28.Nc5 Rc5 29.Re6 fe6 30.Qe6 Kh8 31.Qf5 Rcd5 32.g4 Qe7 33.c4 Rd2 34.Re4 Qf8 35.Qf8 Rf8 36.Bd4 Kg8 37.c5 Rb8 38.Be3 Rc2 39.Kg2 Rb3 40.Re5 Kf7 41.Kg3 Rc4 42.Rd5 g6 43.Rd7 Ke6 44.Rd6 Ke5 45.Rb6 (45.Kh4? Rbb4 46.f3 Rb3 47.Bg1 Rf3–+) 45...Ra3 46.Kh4 (46.Rb7 Rc5 47.Rh7 Rd5 48.Rb7=+) 46…Raa4 0–1. Sternik,Ryszard – Rosner,Dirk, email corr or006–01, 2001 (Sternik).

6.Be2 Nf6

7.0–0 Nbd7

8.c4 e6 9.Nd4 Qb4 10.Bc3 Be2 11.Qe2 Qc4 12.d3 –/+.

8.c4 e6 9.Nd4 Be2 10.Qe2=+ Be7 11.cd5= Qd5 12.Nc3 Qa5 13.Nb3 Qb6 14.d4 0–0 15.Qc2 Rfc8 16.Rfd1 Ra6 17.e4 Rca8 18.d5 ed5 19.ed5 cd5 20.Nd5 Nd5 21.Rd5 Qe6 22.Qd2 Nf6 23.Bf6 Qf6 24.h3 ½–½. Kallab – Grund,Karl, corr SOK–88–24, 1988.

8.c4 e6 9.cd5 ed5 10.Nd4 Be2 11.Qe2 Bc5 =.

8.c4 e6 9.cd5 Nd5 10.Nc3 Bf3 11.Bf3 Ba3 =.

8.c4 Bf3 9.Bf3 dc4 10.Qc1 =+.

8.Ne5 Be2 9.Qe2 Qb4 =.

8.Ne5 Be2 9.Qe2 Qc7 10.Nd7 Nd7 =.

4.Nf3 d6

5.Nc3 Bg4 6.e4 Nd7 7.h3 Bh5 8.g4 Bg6 9.Nh4 Ngf6 10.Qe2 e5 11.Rb1 Be7 12.Rg1 Nc5 13.Ng6 hg6 14.g5 Nfd7 15.Qe3 Ne6 16.Rg4 b5 17.a3 Ndc5 18.Kd1 Bd8 19.Qg3 Qa7 20.Bg2 Qe7 21.h4 Na4 22.Na4 Ra4 23.Qc3 Qd7 24.Qe3 Qb7 25.Qd3 Ke7 26.Qf3 Bb6 27.Ke1 Qa7 28.Bc1 Bc5 29.d3 Ba3 30.Bd2 Bc5 31.Rc1 Ra1 32.Bh3 Qa3 33.Qd1 Ra8 34.Rg3 Nd4 35.c3 Rc1 36.Qc1 Qc1 37.Bc1 Ne6 38.Be6 Ke6 39.Be3 Ra1 40.Kd2 Ra2 41.Kc1 Be3 42.fe3 Rh2 43.Rg4 c5 44.d4 Kd7 45.d5 Kc7 0–1. b4_player (2175) – Raspoutine (2300), GameColony.com, 2003.

5.e3 e5 6.Be2 Be7 7.0–0 Be6 8.c4 Nd7 9.d4 (9.Nc3 Ngf6 10.Ng5 Bf5 11.f4 ef4 12.Rf4 Bg6 13.Nge4= –0.03) 9...h6 (9...Ngf6 10.Bc3 Qc7 11.Nbd2 0–0 12.Qc2 ed4 13.Bd4= 0.00) 10.Nbd2 (10.Qb3 Qc7 11.Nbd2 Ngf6 12.e4 0–0 13.Rfb1= 0.06) 10...Ngf6 11.e4 Bg4 (11...0–0 12.Re1 ed4 13.Bd4= 0.00) 12.Nb3 Qc7 13.de5 (13.Nfd2= 0.25) 13...de5 14.Nfd2 Be6 15.Qc2 0–0 16.a4 Nc5 17.f4 (17.a5!?=) 17...ef4–/+ 18.Kh1 (better is 18.Nc5!? Bc5 19.Kh1–/+) 18...Na4–+ 19.Bd4 c5 20.Bg1 Nd7 21.Nc1 Nab6 22.Ra8 Ra8 23.Nd3 Bd6 24.h3 g5 25.e5 Ne5 26.Ne5 Be5 27.Ne4 Nd7 28.Rb1 b6 29.Nd2 Rd8 30.Nf3 Bf6 31.Bf2 Ne5 32.Ng1 Rd6 33.Ra1 Qd7 34.Ra8 Kg7 35.Be1 Bf5 36.Qa2 Be4 37.Ra7 Qc6 38.Bh5 Rd7 39.Ra3 Qe6 40.Bc3 Nc4 41.Bg4 Qd5 42.Bf6 Kf6 43.Ra4 b5 44.Rc4 bc4 45.Bd7 Qd7 46.Qc4 Qc6 47.Qc3 Kg6 48.Nf3 Bf3 49.gf3 c4 50.Kg2 Qd5 51.Qh8 Qd2 52.Kf1 Qd3 53.Kf2 Qe3 54.Kg2 Qe2 55.Kg1 Qe1 56.Kh2 Qg3 57.Kh1 Qh3 58.Kg1 Qg3 59.Kh1 Qf3 60.Kg1 Qe3 61.Kh2 Qe2 62.Kh3 g4 63.Kh4 Qh2 64.Kg4 Qg3 0–1. Kozlowski,Tomasz (1990) – Bajerlan,Dawid (1980), Poznan Poland, 2010.

5.e3 Nf6 6.Be2 Nbd7 7.0–0 g6 8.c4 Bg7 9.Qc2 0–0 10.d4 e5 11.Nbd2 ed4 12.Nd4 Re8 13.N2f3 Nc5 14.Nb3 Qa4 15.Nfd4 Ng4 16.Qc1 Ne5 17.Qc2 b6 18.Rfc1 Qa7 (18...Ne6 19.Rd1=) 19.Nc5 (19.f4!? Ng4 20.Bg4 Bg4 21.Nc6+=) 19...bc5 20.Nf3 Bf5 21.Qd2 Reb8 22.Bc3 Qe7 23.h3 Ra4 24.Qd1 Rba8 25.Qb3 Qa7 26.Ne5 Be5 27.Be5 de5 28.Bf3 Ra2 29.Ra2 Qa2 30.Qa2 Ra2 31.Bc6 Rc2 32.Rc2 Bc2 33.Bd5 Kf8 34.f3 f6 35.h4 h6 36.Kf2 Ke7 37.g3 g5 38.hg5 fg5 39.e4 h5 40.f4 gf4 ½–½. Nemeth,Laszlo – Dudas,Peter (2165), Cseppko op–A, 2002.

5.e3 Bg4 6.Be2 Bf3 7.Bf3 Nh6 8.0–0 e5 9.d4 Nd7 10.Nc3 (10.c4!?+=) 10...d5= 11.e4 Bb4 (11...Ba3!? 12.Ba3 Qc3+=) 12.Qd3+= 0–0 (12...de4!? 13.Ne4 f5=) 13.ed5+/– c5 (13...ed4 14.Qd4 Nf5 15.Qf4 Bc3 16.Bc3 Qc3 17.Qf5+/–) 14.dc5 Nc5 15.Qe3 Rad8? (15...Nd7 16.Ne4+/–) 16.Ne4 (better is 16.a3 Bc3 17.Bc3+– (17.Qc3?! Qc3 18.Bc3 e4+/–)) 16...Kh8?? (better is 16...Nf5!? 17.Qg5 Ne4 18.Qf5 Nd2 19.Qe5 Nf3 20.gf3 f6 21.Qe6 Kh8+/–) 17.Nc5 (better is 17.a3!? Nf5 18.Qg5 Nd4 19.ab4 Qb4 20.Bd4 Qd4 21.Nc5 Qc5 22.Qe5 Qc2+–) 17...Qc5 18.Qe5 f6 19.Qe2 Nf5 20.Rfd1 Rfe8 21.Qd3 Nd6 22.a3 Ba5 23.Rac1 Bb6 24.Bd4 Qa5 25.Bb6 Qb6 26.c4 Qc5 27.Qb3 h6 28.Qb4 b6 29.h3 Ra8 30.Rd3 Qb4? (30...Rac8+–) 31.ab4 Ra4 32.c5 bc5 33.bc5 Nc4 (33...Rc8 34.Rdd1 (34.cd6?! Rc1 35.Kh2 Rc8+/–) 34...Nb5 35.d6+–) 34.d6 Ne5 35.Rdc3 (35.Rdd1 Nf3 36.gf3 Rf8+–) 35...Rc8 (35...Rd4 36.Bb7 Rb8 37.Rb1+–) 36.c6 (better is 36.Bb7 Rf8+–) 36...Ra6 (36...Rd4 37.Be4! Re4+–) 37.d7 (37.d7 Rf8 38.Rd1+–) 1–0. retiponziani – 488, ChessWorld.net, 2012.

5.e4 Nd7 6.Bc4 Ngf6 7.Nc3 Qb4 8.Bb3 Nc5 9.d3 Nb3 10.ab3 Rb8 11.0–0 e5 12.Ra4 Qb6 13.h3 Be7 14.d4 Qc7 15.de5 de5 16.Qe2 0–0 17.Nd1 Bd6 18.Ne3 b5 19.Raa1 Ne4 20.Ng4 Bg4 21.hg4 Nc5 22.Nd2 Ne6 23.Ne4 Nf4 24.Qf3 Be7 25.Qe3 c5 26.g3 Ng6 27.Nc3 Qc6 28.Rfd1 Rfd8 29.Rd8 Rd8 30.Ne4 c4 31.Ra7 Bf8 32.bc4 bc4 33.Bc3 f6 34.Kh2 Ne7 35.Qc5 0–1. craig4000 – whitecat25, ChessWorld.net, 2014.

5.e4 Nf6 6.e5 Ng4 7.ed6 Qb6 8.Bd4 c5 9.Bc3 ed6 10.Bc4 Nd7 11.Qe2 Nge5 12.Be5 de5 13.Ne5 Be7 14.Bf7 Kf8 15.Nc3 Ne5 16.Qe5 Kf7 17.Qe7! Ke7 Decoy to e7 18.Nd5 Theme: Double Attack 18...Kd8 19.Nb6 Re8 20.Kd1 Ra6 21.Nc8 Kc8 22.Re1 Rae6 23.Re3 Re3 24.fe3 Kc7 25.Ke2 Ra8 26.a4 b5 27.a5 b4 28.a6 Ra7 29.Kd3 Kd6 30.Kc4 Kc6 31.d4 cd4 32.ed4 Kb6 33.Kb4 g5 34.c4 h5 35.d5 g4 36.c5 Kc7 37.Kb5 White prepares c6 37...h4 38.d6 Kc8 39.Rf1 g3 40.c6 h3 (40...Rd7 41.Rf8 Rd8 42.a7 Rf8 43.a8Q) 1–0. Klaus Behrmann – coolerdude, ChessWorld.net, 2004.

4.Nf3 f6

5.Bc3 Qd5 6.a3 e5 7.e3 d6 8.d4 Bg4 9.Be2 Be7 10.0–0 Nh6 11.h3 White is in command 11...Bh5 12.Bb4 Na6 13.Nc3+= Qe6 14.d5 Qd7 15.Ne5 Be2 16.Nd7 Bd1 17.Nb6 Ra7 18.Rad1 Nb4 19.ab4 Nf7 20.Nc8 Ra3 21.Ne4 Kd7 22.Ne7 Ke7 23.c4 Rb3 24.Rb1 Rb1 25.Rb1 Ra8 26.dc6+– bc6 27.b5 cb5 28.cb5 Nd8 29.b6 Nb7 30.Rc1 Rd8 31.Ng3 g6 32.Rc7 Rd7 33.Ne4 Rc7 34.bc7 Kd7 35.Nf6 Kc7 36.Nh7 Nc5 37.Nf8 g5 38.Nh7 Ne6 39.Kh2 d5 1–0. Kuperski,Marek – Gugulski,Marcin, corr 2. AMM, Poland, 1994.

5.e4 Qb4 6.Bd4 e5 =.

5.e4 d5 6.ed5 cd5 7.c4 e6 8.Qb3 dc4 (8...Nc6!?=) 9.Bc4+= Be7 (9...Qb4 10.0–0 Qb3 11.Bb3+=) 10.0–0 Bd7 (10...Qb4!?+/–) 11.Be6 Be6 12.Qe6 Nd7 13.Nc3 Ra6 14.Qe4 Ne5 (14...Nc5 15.Qc4 Ne6+–) 15.Ne5 fe5 16.Nd5 Nf6 17.Nf6 Bf6 18.Bc3 Qc7 19.Be5! Be5 (19...Qe5 20.Qe5 Pinning; 19...Be5 20.d4 Passed pawn) 20.d4 Re6 21.de5 0–0 22.f4 b5 23.Qd5 Qb6 24.Kh1 Kh8 25.f5 Ree8 26.Rab1 Rd8 (26...Qe3 27.e6 (27.Rb5?! Rf5 28.Qd1 Rfe5+/–) 27...b4 28.Qc4+–) 27.Qb5 Qd4 28.e6 Rb8 (28...Rfe8+–) 29.Qb8 Kg8 30.e7 Rb8 31.Rb8 Kf7 32.e8Q Kf6 33.Rb7 Kg5 34.Qe7 Kg4 35.Rb4 (35.h3 Kh5 36.g4 Qg4 37.hg4 Kg4 38.Rb4 Kg3 39.Qe3) 35...Qb4 36.Qb4 Kg5 37.Qe7 Kh6 (37...Kg4 38.h3 Kh5 39.g4 Kh6 40.Qh4) 38.Qh4 1–0. Law,Stephen (1870) – Damasio,Fabio, IECG, 2004.

4.Nf3 Nf6

5.Bc3 Qb6 6.Bd4 c5 7.Bf6 Qf6 8.Nc3 e6 9.e4 Nc6 10.Nb5 Qf4 11.Be2 Ra5 12.Nc3 Be7 13.g3 Qh6 14.0–0 Bf6 15.a4 0–0 16.Bb5 d6 17.Rb1 Qg6 18.Re1 Nd4 19.Bd3 Nf3 20.Qf3 Qg5 21.Red1 Bc3 22.dc3 e5 23.Qe2 Ra4 24.Bb5 Ra3 25.Rd6 Rc3 26.Qd1 Bg4 27.Be2 Be2 28.Qe2 Qe7 29.Rdb6 h6 30.Rb7 Qe6 31.R1b2 Qc4 32.Qc4 Rc4 33.Rc7 g5 ½–½. Van Esbroeck,Jeff – Bendig,Frank, corr TKM/A001, 1999.

5.Bc3 Qc7 6.e3 g6 7.Bf6 ef6 8.c4 Bg7 9.d4 0–0 10.Bd3 f5 11.0–0 d6 12.Nc3 Nd7 13.Qb3 Nf6 14.Rfb1 Re8 15.a3 h6 ½–½. Klaus Behrmann – Bury born and bred, ChessWorld.net, 2004.

5.Nc3 e6 6.e3 Be7 7.Be2 0–0 8.0–0 d5 9.d4 b6 10.Qd2 Ba6 11.Ba6 Na6 12.a3 c5 13.dc5 bc5?? (13...Nc5 14.Nd4 Rfc8 15.Nb3+=) 14.Rfb1?? (14.Nd5 Qd8 15.Nf6 Bf6 16.Qd8 Bd8+–) 14...Rfb8?? (14...Nc7 15.Nd1+=) 15.Ne2?? (better is 15.Nd5 Qd2 16.Ne7 (16.Nd2? ed5 17.c4 Ra7–+) 16...Kf8 17.Ng6 fg6 18.Nd2+–) 15...Qd2 16.Nd2 Rb7 17.Be5 Rba7 18.Nc3?? Nd7 19.Nb5 Ne5–+ 20.Na7 Ra7 21.Rb8?? Nb8 22.Rb1 Nec6 0–1. Fournier,Frederic (1645) – sebita3 (1635), Active, 2006.

5.c4 d5 6.Bc3 (6.cd5 Qd5 7.Nc3 Qa5=) 6...Qa4 (6...Qd8 7.e3=) 7.Qa4 Ra4 8.Bf6 ef6 (8...gf6 9.cd5 cd5 10.Nc3=) 9.cd5 cd5 10.e3 Ra5 11.Nc3 Bb4 (better is 11...Nc6!?=) 12.Bb5 Bd7 (12...Kd8 13.a4 Bd7+=) 13.Bd7 (13.Nd5 Rb5 14.Nc7 Ke7 15.Nb5 Bb5 16.a3+=) 13...Kd7= 14.Ke2 Nc6 15.a3 Bc3 16.dc3 Rha8 17.Rhb1 Kc7 18.Rb3 (18.Nd4 Nd4 19.cd4 Ra3 20.Rc1 Kd6+=) 18...Ne5 (18...b6 19.Nd4=) 19.Nd4 (19.Rab1 Rb8=) 19...b6 20.Rb4 Nc6 (20...Nc4 21.a4=) ½–½. Woelfelschneider,Peter – Pommerel,Wim, email 4AMM–F, 1998.

5.e3 Na6 6.Be2 Nc5 7.Bc3 Qa7 8.0–0 d6 9.Bc4 b5= 10.Bb3 Qd7 11.d3 Bb7 12.Nbd2= Na4 13.Ba4 Ra4 14.Qb1 e5=+ 15.e4 Be7 16.Re1 0–0–/+ 17.Nf1 Nh5 18.Ne3=+ Nf4 19.Nf5 Bf6 20.g3 Ne6–/+ 21.Qb2 g6–+ 22.Nh6 Kg7 23.Ng4 (23.Bd2 Kh8–+) ½–½. "Maradona" (1715) – Garfield85 (1855), internet, 2006.

5.e3 Na6 6.Be2 d6 7.0–0 =.

5.e3 Na6 6.Be2 g6 7.0–0 Bg7 8.c4 Nc5 (8...0–0 9.d4=) 9.Bc3 Qa4 10.Qa4 Na4 11.Nd4 (11.Re1!?=) 11...Ne4–/+ 12.f3 (12.Rd1 Nec3 13.Nc3 d6–/+) 12...Nec3 13.Nc3 Nc3 14.dc3 Ra3 15.Rfc1 d6 16.Kf2 f5 17.Nb3 c5 18.g3 Be6 19.e4 (better is 19.Rc2!?–/+) 19...fe4–+ 20.fe4 0–0 21.Ke3 (21.Kg1 Rfa8–+) 21...b5! 22.Nd2 Bc3 23.Nb1 Bd4 24.Kd2 Raa8 25.Nc3 b4 26.Nb5 Ba1 27.Ra1 Rf2 28.Ke3 Re2! 29.Ke2 Bc4 30.Kd2 Bb5 31.Kc2 Ba4 32.Kb2 c4 33.Rc1 c3 34.Kb1 Bb5 35.Rd1 c2! (35...c2 36.Kc2 Ba4 37.Kc1 Bd1 38.Kd1 Ra2–+) 0–1. Neumann,Frank (1650) – Markus,Roland (2440), RSXE – Ostern, 2009.

5.e3 b5 6.Bd3 g6 7.0–0 Bg7 8.c4 bc4 9.Bc4 0–0 10.d4 Ba6 11.Nbd2 d6 12.Re1 Nbd7 13.Qc2 Rab8 14.Bc3+= Qb6 15.Reb1 Qa7 16.Qa4 Rb1 17.Rb1+/– Nb8 18.h3 Nfd7 19.Ba6+/– Qa6 20.Qa6 Na6 21.Rb6?? Nb6–+ 22.Ba5 Rb8 23.Bb6 Rb6 24.Nc4 Rb1 25.Kh2 c5 26.Ncd2 Rb2 27.a4 Ra2 28.dc5 Nc5 29.Kg1 Ra4 30.g3 Ra2 31.Nc4 Nd3 32.Ncd2 Bc3 33.Ne4 Ba5 34.g4 d5 35.Ng3 Nf2 36.h4 Ne4 37.Ne4 de4 38.Ng5 f5 39.gf5 gf5 40.Ne6 Bb6 0–1. jammboy – kehrsam, ChessWorld.net, 2006.

5.e3 g6 6.c4 Bg7 7.Be2 0–0 8.0–0 d6 9.d4 Ne4 10.Qc2 d5 11.Nbd2 Bf5= (11...Nd2 12.Qd2 Qd2 13.Nd2 Be6 14.a4 Rc8 15.a5 Nd7) 12.Bd3 (12.Nb3 Qa4 (12...Qc7 13.Nh4 Na6 14.Nf5 gf5 15.a3 dc4) 13.Nh4 Be6= 14.f3 Nd6 15.cd5 cd5) 12...Nd2 13.Nd2 Bd3 14.Qd3 f5 (14...Nd7 15.cd5 cd5) 15.Nb3 (15.Bc3 Qc7) 15...Qa6 16.Rfc1 Nd7 17.Qc2 e6 (17...dc4 18.Qc4 Qc4 19.Rc4=) 18.f4 (18.cd5 cd5 19.a4 f4=) 18...Nb6 (18...dc4 19.Qc4 Qc4 20.Rc4=) 19.Nc5 Qc4 (better is 19...Qa7 20.Ne6 Rfe8 21.Ng7 Kg7=) 20.Ne6 (better is 20.Qf2!? Qb4 21.a4+= (worse is 21.Ne6 Rfb8+=; 21.Nb7? Nc4–+)) 20...Rf6 (20...Qc2 21.Rc2 Rf7 22.Ng7 Kg7 23.Kf2–/+) 21.Qf2 Qb4 22.Ng7+= Kg7 23.Bc3 Qe7 24.Rab1 Nc4 25.Bb4 Qe4 26.Re1 Rf7 27.Bc5 b5 28.Rb3+= Ra4 29.a3 Rc7 30.Qh4 Qe6 31.Qd8 Rc8–/+ 32.Qe7 Qe7 33.Be7 Kf7 34.Bb4 Rca8 35.Ra1 Ke6 36.Kf2 Kd7 37.h3 h5 38.Kg3 Nd6 39.Rc1 Ne4 40.Kf3 Rb4 41.Rb4= Ra3 42.Rb2 Nd6 43.Re2 h4 44.g3 hg3 45.Kg3 Nc4 46.Kf2 b4 47.Rg1 b3 48.Rg6 b2 49.Rg1?? Ra1–+ 50.Ree1 Re1 51.Re1 Nd2 52.h4 b1Q 53.Rb1 Nb1 54.h5 Ke7 55.Kg3 Nd2 56.h6 Kf7 57.Kh4 Ne4 58.Kh5 Kf6 59.h7 Kg7 60.h8Q Kh8 61.Kg6 Kg8 62.Kf5 Kf7 63.Ke5 Ke7 64.f5 Nf6 65.Kf4 Nd7 66.e4 de4 67.Ke4 Kf6 68.Kf4 Nb6 69.Ke4 Nd5 70.Kd3 Kf5 71.Kc4 Ke4 72.Kc5 Nb4! 73.Kb4 Kd4 74.Kb3 c5 75.Kc2 Kc4 76.Kb1 Kb3 77.Kc1 c4 78.Kd2 c3 79.Kd1 Kb2 80.Ke2 c2 81.Kf3 c1Q 82.Kg4 Qf1 83.Kg3 Kc3 84.Kg4 Kd4 85.Kg3 Ke5 86.Kh2 Ke4 87.Kg3 Qg1 88.Kh3 Kf3 89.Kh4 Qg4# 0–1. Tomasi,Stephane (1760) – Pieri,Thierry (1800), Provence–ch France, 1993.

5.e3 g6 6.c4 Bg7 7.Be2 0–0 8.0–0 d6 9.d4 Bf5 10.Nbd2 (10.Nh4 Bd7 11.Qb3) 10...Na6 (10...c5 11.Nb3) 11.Qb3 (11.a4=) 11...c5 12.Bc3 (12.Qb7? Rfb8 13.Qe7 Rb2–+) 12...Qc7 13.Nh4 cd4 14.ed4 Be6 15.Rfb1 Rfb8 (15...Ra7 16.Bf3=) 16.Qb6 Qb6 17.Rb6 Nd7 (17...d5 18.c5=) 18.Rb3 Nac5 (18...d5 19.Nhf3=) 19.dc5+= Nc5 20.Bg7 Nb3 21.ab3 Kg7 22.Ra8 Ra8 23.f4 Ra2 24.Nhf3 Bf5 25.Kf2 e5 26.Ke3 f6 27.g3 h6 28.Bd3 Bd3 29.Kd3 b6 30.Kc3 g5 31.fg5+/– hg5 32.Ne4 g4 33.Nh4 Rh2 34.Nd6+/– Rf2 35.b4 Kf8 36.Nc8 Ke8 37.Nb6+– f5 38.c5 f4 39.c6 Kd8+/– 40.Nd5 fg3 41.b5 g2 42.Ng2! Rg2 43.b6 Rg1 44.b7 Rc1 45.Kb2 Rc6 46.b8Q (46.b8Q Kd7 47.Qe5+–) 1–0. Svitek,Volker (2130) – Adair,Robin (2005), Frankfurt–ch, 2007.

5.Bf6 gf6 6.e4 d5 7.ed5= cd5 (7...Qd5 8.Nc3 Qe6 9.Be2 Rg8 10.g3 Bg7 11.Nd4 Qd6 12.Nb3+= –0.31) 8.Be2 (8.Nc3 Rg8 (8...e6= 9.Bb5 Bd7 10.Qe2 Kd8 11.Bd7 Nd7 12.0–0= 0.06) 9.Rb1 e6 10.Rb5 Qc7 11.Qe2 Be7 12.Qd3= –0.06) 8...e5 (8...Rg8 9.g3 e5 10.h3 Nc6 11.Rh2 e4 12.Nh4–/+ –0.94) 9.0–0 Nc6 (9...Rg8 10.Kh1 Nc6 11.c3 Qa4 12.Qa4+= –0.66) 10.Re1 (10.Nc3 Rg8+= 11.Bb5 Bh3 12.Ne1+= –0.41) 10...Be6 (10...e4 11.Nh4 f5 12.Bf1+= –0.66) 11.Nc3 (11.c3+= e4 12.Nh4+= –0.56) 11...0–0–0 Black plans d4 (11...e4 12.Nh4–/+) 12.Rb1 (12.Nb5 Rg8=) 12...Bb4 (12...e4 13.Nh4=) 13.Nb5= d4 (worse is 13...Qa2 14.Ra1 Qb2 15.c3+–) 14.a3 Bc5 (14...Ba3? 15.Ra1 (15.Na3?! Qa3 16.Bd3 Qd6=) 15...d3 16.Bd3 (16.Ra3?! de2 17.Qe2 Qb4+/–; 16.Na3?! de2 17.Qe2 Qd5+/–) 16...Rd3 17.cd3 Qb5 18.Ra3+–) 15.Bd3 Ne7 (15...Rd7 16.Qe2=) 16.Be4 (16.Nh4 A) 16...Ba3? 17.Ra1+– (17.Na3?! Qa3 18.Be4 Nd5+=); B) 16...Nd5+=) 16...Bd5 (16...b6!?=) 17.Bd5 Rd5 18.Qe2 (18.Re4 Kd8+=) 18…Rhd8 ½–½. Finke,Thilo (1990) – Hingst,Thomas (2085), RSS5E NoEngine–98, 2009.

5.g3 d5 6.Bg2 Nbd7 7.0–0 Qb6 8.Qc1 e6 9.d4 c5 (9...Qa6 10.Re1+=) 10.Nbd2 (10.c4 dc4 11.a4 cd4 12.Bd4 Qb4=) 10...cd4 11.Bd4 Qc7 12.c4 e5 13.Bb2 d4 14.Rd1 Nc5 (14...Bd6 15.Nb3+=) 15.Ne1 (15.Nb3 Bg4=) 15...Bg4 (15...Bd6 16.Nb3–/+) 16.Ndf3+= Ra4 17.Qc2 (17.e3 e4 18.ed4 ef3 19.Nf3 Ne6+=) 17...Be6 (17...Bd6 18.Nd3 Bf5 19.Nh4–/+) 18.Nd2 Be7 (18...Bd6 19.Nd3 Bf5 20.Nb3 Nd3 21.ed3+=) 19.Nd3+= Bf5 20.Nb3 (20.f4 Ng4 21.Nf1 f6+=) 20...Nfd7 (20...Nd3 21.ed3 b5 22.Rdc1=) 21.Nbc5 Nc5 22.f4 ef4 23.gf4 Bf6 24.Bh3 Bd3 25.ed3 Qf4 26.Re1 Be5 27.Bc1 Qf6 28.Qe2 Qg6 29.Kh1 0–0 30.Rg1 Qd6 31.Bg5 Raa8 32.Bf5 Rfe8–+ 33.Qg2 g6 34.Rad1 Bg7 35.Bh3 Ra3 36.Qc2 Ne4 37.Rge1–/+ Rea8 38.Be7 Qc6 39.de4 Ra2 40.Qd3 Qc7 41.e5 Be5 42.Bg2 Qe7 43.Qd4 Re8 44.Qe4 Qg5 45.Rd5 Re6 46.Rb5 Qd2 47.Rf1 Bh2 48.Qb7 Bc7 49.Rb3 Re1 (49...Re1 50.Qf3 Qh6 51.Bh3 Rh2 52.Kg1 Qg5 53.Bg2 Qc5 54.Re3 Rg2 (54...Re3?! 55.Qf7 Kh8 56.Qf6 Kg8 57.Qf7 Kh8 58.Qf6 Kg8 59.Qf7=) 55.Kg2 Qg5 (55...Qe3?? 56.Qf7 Kh8 57.Qf8; 55...Re3?! 56.Qf7 Kh8 57.Qf6 Kg8 58.Qf7 Kh8 59.Qf6 Kg8 60.Qf7=) 56.Qg3 Bg3 (56...Qe3?! 57.Qe1 Qg5 58.Kh3+=) 57.Rg3 Qd2 58.Rf2 Qd1–+) 0–1. Malmstroem,Jan – Pommerel,Wim, email 4AMM–F, 1998.

5.g3 g6 6.Bg2 Bg7 7.0–0 0–0 8.d3 d5 9.Nbd2 Qc7 10.c4 Nbd7 11.Qc1 Ne5 12.Be5 Qe5 13.Ne5 dc4 14.Ndc4 b5 15.Nb6 Rb8 16.Nc8 Rbc8 17.Rb1 Nd5 18.Nc6 Kh8 19.Bd5 e6 20.Bg2 1–0. giorgo – pjr, playok.com, 2012.

5.c4 d6

6.Bc3 Qa4 7.Qa4 Ra4 8.d3 (8.Bf6 ef6 9.e3 Be6=) 8...e5=+ 9.e4 Be7 (9...Bg4 10.Be2=+) 10.Be2 Nbd7 11.0–0 0–0 12.Nbd2 Nc5 (12...Ra3 13.Bb4 Ra6 14.d4=+) 13.Rfb1 h6 14.h3 Ra6 15.Bb4 Ne6 16.Bf1 Nd7 17.Nb3 f5 18.ef5 Rf5 19.d4 c5 20.dc5 dc5 (21.Bc3 Nd4=+). Law – Seack,Ingo, corr 3GMM–12, 1995.

6.Bc3 Qb6 7.d4 e5 (7...e6 8.Nbd2+=) 8.e3 (8.de5 de5 9.Ne5 Ne4=) 8...e4 9.Nfd2 Be7 10.Qb3 (10.Be2 0–0=) 10...Qb3 11.ab3 Ra1 12.Ba1 Na6 (12...Na6 13.d5 Bf5=; 12...d5 13.cd5 cd5 14.f3=). Baer,Werner – Bendig,Frank, corr TKM/A001, 1999.

6.Bc3 Qc7 7.d4 g6 8.Nbd2 Bg7 9.e4 0–0 10.Be2 Bg4 11.Qc2 Nbd7 12.0–0 Nh5 13.h3 Nf4 14.Bd1 Bf3 15.Nf3 e5 16.de5 de5 17.g3 Ne6 18.Be2 c5 19.Rfd1 Nd4 =+. Grigutsch,Klaus Dieter – Brauer,Christian, corr, 1976.

6.Bc3 Qf5 7.d4 Nbd7 8.Nbd2 e5 9.h3 e4 10.g4 Qe6 11.d5 Qe7 12.g5 Nh5 13.dc6 bc6 14.Nd4 e3 15.N2f3 Nc5 16.fe3 Qe3 17.Qd2 Qd2 18.Nd2 Na4 19.Rc1 Nc3 20.Rc3 Ra2 21.Nc6 h6 22.h4 Nf4 23.e3 Ra1 24.Kf2 Ne6 25.g6 fg6 26.Rb3 Be7 27.Kg3 g5 28.h5 Nc5 29.Rb8 Kf7 30.Bg2 Rh1 31.Bh1 Re8 32.Bd5 Kf8 33.Ne4 Ne4 34.Be4 Be6 35.Re8 Ke8 36.Bd5 Bd7 37.Kf3 Bf6 38.Nb8 g4 39.Kg2 Bc8 40.Nc6 g6 41.hg6 Kf8 42.Nd4 Kg7 43.Be4 h5 44.Kf2 Kh6 45.Bd3 h4 46.Be4 h3 47.Kg1 Bd7 48.Nf5 Bf5 49.Bf5 Kg5 50.Be6 Kh4 51.Bd5 g3 52.Bb7 Be5 53.Be4 g2 54.Bg2 hg2 55.Kg2 Kg5 56.Kf3 Kf5 57.Ke2 Kg6 58.Kd3 Kf5 59.c5 dc5 60.Kc4 Bd6 61.Kd5 Be7 62.e4 Kf4 63.e5 Ke3 64.Kc4 Ke4 (65.e6 Ke5–+) 0–1. ETC_Chess – Rolly, ACL–T052 playchess.de, 2003.

6.e3 e5 =+.

6.Bf6 ef6 7.e3 =.

5.e3 d5

6.Bc3 Qb6 7.d4 Ne4–/+ 8.Bd3 Nc3 9.Nc3 Qb2 10.Ne2= Ra2 11.Rb1 Qa3 12.0–0 f6 13.Nc1 Rb2 14.Nd2 Rb1=+ 15.Nb1 Qd6 16.Qh5 Kd8 17.Bh7? Be6–+ 18.Qg6? Bg8 19.Qg3 Qg3 20.fg3 Bh7 21.Nd3 Bd3 22.cd3 e6 23.e4 Bb4 24.e5 f5 25.g4 g6 26.gf5 gf5 27.Rf4 Rg8 28.h3 Rg3 (29.Rf3 Rf3 30.gf3 c5–+; 28...c5 29.dc5 Nc6 30.Kf1–+) 0–1. Kusmierek,Jozef – Weber,Krzysztof, corr 2. AMM Poland, 1993.

6.Bc3 Qc7 7.Be5 Qd8 8.Be2 =.

6.c4 dc4 7.Bc4 Nbd7 8.0–0 e6 9.d4 Nb6 10.Bd3 Qh5 11.Qb3 Nbd5 12.Ba3 Ba3 13.Na3 0–0 14.Rfc1 Nb6 15.Nc4 Nc4 16.Rc4 Ra5 17.Rac1 Nd7 18.Qc2 e5 19.d5 e4 20.Be4 Nb6 21.Rc5 Rc5 22.Qc5 Nd5 23.Bd5 Qd5 24.Qd5 cd5 25.Rc7 Bg4 (25...Re8 26.Nd4+/–) 26.Rb7 Bf3 27.gf3 Ra8 ½–½. Woschkat,Karl_Heinz – Bierboms,Dieter, remoteschach.de, 2002.

6.c4 e6 7.Be2 Bd6 8.0–0 0–0 9.d4 Nbd7 10.Nbd2 c5 (10...b6!?=) 11.cd5+= Nd5 12.Ne4 (12.Nc4 Qc7+=) 12...Be7= 13.Qc2 Qa4 14.Qa4 Ra4 15.Nc5 Nc5 16.dc5 Bc5 17.Rfc1 Bd6 18.Ne5 Be5 19.Be5 Bd7 20.Bf3 Bc6 21.Bd1 Ra5 22.Bd4 Rfa8 23.Bb3 Nb4 24.Bc3 Na2 25.Ba5?? (better is 25.Rd1 Nc3 26.Ra5+=) 25...Nc1–/+ 26.Rc1 Ra5 27.f3 Kf8 28.Kf2 Ke7 29.e4 Kd6 30.Ke3 Ra3 31.Rc3 Ra1 32.g4 Rd1?? (better is 32...Re1 33.Kf2 Rh1–/+) 33.Bd1+– 1–0. CountFromHolland – Beate, playchess.de, 2004.

6.c4 Bg4 7.Bc3 Qb6 8.Bf6 gf6 9.cd5 cd5 10.Nc3 e6 11.Rb1 Qa7 12.Qb3 Bf5 13.Bb5 Kd8 14.d3 Bg4 15.Nd4 Qa3 16.Ba4 Qb3 17.Rb3 Kc8 18.h3 Bh5 19.Kd2 Na6 20.Rc1 Nc5 21.Rb5 Rg8 22.g4 Bg6 23.Nd5 ed5 24.Rbc5 Bc5 25.Rc5 Kd8 26.Bb3 Rc8 27.Rb5 Kc7 28.Bd5 b6 29.f4 f5 0–1. Van Esbroeck,Jeff – Plock,Joerg, corr TKM/A 001, 2000.

6.c4 Bg4 7.cd5 Nd5 8.Nc3 Nd7 9.Be2 e6 10.0–0 Be7 11.Nd5 Qd5 12.h3 Bf3 13.Bf3 ½–½. Jose Luis – Mely, ChessWorld.net, 2006.

6.c4 Bg4 7.cd5 Nd5 8.Be2 Nd7 9.0–0 e6 10.h3 Qb6 11.Bd4 c5 12.hg4 cd4 13.Nd4 Bd6 14.Nb5 Rc8 15.Nd6 Qd6 16.Qb3 0–0 17.d4 Qb4 18.Bf3 Qa5 19.Qb7 Rb8 20.Qd7 Rfd8 21.Qc6 Rbc8 22.Bd5 Rc6 23.Bc6 Qb6 24.Rc1 Rc8 25.Nd2 Rc6 26.a4 Rc1 27.Rc1 Qa6 28.Ne4 h6 29.Nc5 Qb6 30.Nd7 Qb7 31.Ne5 Qa7 32.Rc8 Kh7 33.Rc4 f6 34.Nf3 Qb6 35.Nd2 Qb2 36.Nf1 Qb3 37.Rc6 e5 38.a5 ed4 39.ed4 Qd5 40.Rc2 Qd4 41.Ra2 Qg4 42.a6 Qc4 43.Ra1 Qd4 44.Ra2 Qa7 45.Ng3 g5 46.Ne4 Kg6 47.Nc3 1–0. LUPES – Rolly, playchess.de, 2002.

6.Be2 b5 =.

6.Be2 Nbd7 7.0–0 e6 8.d3 Be7 9.Qc1 0–0 10.c4 b5 11.cb5 cb5 (worse is 11...Qb5 12.Nd4 Qa6 13.Nc6+=) 12.Nd4 Bb7 13.Nb3 Qb6 14.Qd2 b4 15.Rd1 Rfc8 16.Qe1 Rc2 17.Rd2 Rd2 18.N1d2 Rc8 (18...e5 19.Qc1+=) 19.Rc1 (19.a3 e5=) 19...Qd8 20.Nf3 Bc6 (20...Bd6 21.Rc8 Qc8 22.Nfd4=) 21.Rc2 Ba4 22.Qc1 Rc2 23.Qc2 Bd6 24.h3 Qc7 25.Qc7 Bc7 26.Nfd2 Kf8 27.g4 Ke7 28.Kg2 e5 29.Bf3 (29.a3 ba3 30.Ba3 Bd6 31.Bd6 Kd6=) 29...Ke6 30.Be2 Bc6 31.a3 h5 ½–½. Holz Auf Der Heide,Gerhard (1850) – Juergens,Peter (2030), 3rd Halle Germany, Senior Championship, 2011.

6.Bf6 ef6=+ 7.c4 Be6 8.cd5 cd5 9.Be2 Be7 10.0–0 0–0 11.Nc3 Nc6 12.Nb5 Rad8 13.a4 Bf5 14.Nfd4 Nd4 15.Nd4 Bg6 16.f4 f5 17.Bf3 Bf6 18.Rb1 Bd4 19.ed4 Qa7 20.Rb5 Qd4=+ 21.Kh1 f6 22.Rb7= Bf7 23.Re1 Qf4 24.Ree7 Rde8 25.Re8 Re8=+ 26.h3 d4 27.d3 g5 28.Qc1?? (better is 28.Rb1=+) 0–1. grain – BarbieGirl, Live Game Caissa's Web, 2005.

6.Be2 Bg4

7.0–0 e6 8.d3 Nbd7 9.Nbd2 Bb4 10.Nb3 Qc7 11.Nfd4 Be2 12.Qe2 0–0 13.c4 dc4 14.dc4 Ra7 15.Nc2 Be7 16.a4 b6 17.Ra2 Rfa8 18.Rfa1 c5 19.f3 Nb8 20.e4 Nc6 21.g3 Na5 22.Na5 Ra5 23.f4 Qc6 24.e5 Nd7 25.Ne3 Ra4 26.Ra4 Ra4 27.Ra4 Qa4 28.Qd1 Qd1 29.Nd1 Nb8 30.Kf2 Nc6 31.Ke3 Kf8 32.Ke4 g6 33.Nc3 Na7 34.Na4 Bd8 35.g4 Ke8 36.f5 Kd7 37.f6 Kc6 38.h4 b5 39.cb5 Kb5 40.Nc3 Kc4 41.Ne2 Ba5 42.Bc1 Nc6 43.h5 Bc7 44.Bf4 Nd4 45.Nd4 cd4 46.hg6 hg6 47.Bd2 d3 48.Ke3 Be5 0–1. bratek55 (1660) – beginner2011 (1670), kurnik, 2012.

7.0–0 e6 8.Bf6 gf6 9.Nd4 Be2 10.Qe2 Bd6 11.f4 Nd7 12.c4 dc4 13.Qc4 Qa6 14.Qc2 Nc5 15.Nc3 f5 16.Rab1 Rg8 17.Nf3 Qc4 18.Rb2 b5 19.d4 Na4 20.Na4 Ra4 21.Qf2 Ra3 22.Rc2 Qd5 23.Ne5 Be5 24.fe5 ½–½. Bezgodov – Gleizerov, Cheliabinsk 1990.

7.0–0 Nbd7

8.c4 dc4 9.Bc4 Qb4 10.Bb3 e5 11.Bc3 Qd6 12.h3 Bf3 13.Qf3 e4 14.Qe2 Ne5 15.Be5 Qe5 16.Nc3 Bd6 17.g3 Qf5 18.Qc4 0–0 19.Ne2?? Qh3–+ 20.f4 Ng4 21.Rf2 Nf2 22.Kf2 Qh2 23.Kf1 Qh1 24.Ng1 Rad8 25.Qe2 Rd7 26.d4 ed3 27.Qd3 Rfd8 28.Qf5 Bc5! 29.Re1 Rd2 30.Qf7 Kh8 (31.Re2 Be3 32.Qg8 Rg8 33.Rd2 Qg1 34.Ke2 Qf2 35.Kd3 Rd8 36.Bd5 Rd5 37.Kc4 b5 38.Kb3 Qd2 39.a4 Rd3) 0–1. CountFromHolland – ddddale, HCL–E816 playchess.de, 2003.

8.d3 e6 9.Qd2 Bb4 10.c3 Bd6 11.h3 Bh5 12.Nd4 Be2 13.Qe2 c5 14.Nb3 Qc7 15.N1d2 e5 16.e4 0–0 17.ed5 Nd5 18.Ne4 Nf4 19.Qf3 Rfd8 20.Bc1 Ne6 21.Nbd2 Bf8 22.a4 b5 23.g3 Ra4 24.Ra4 ba4 25.Ba3 Nb6 26.Rb1 c4 27.Bf8 Kf8 28.dc4 Nc4 29.Nc4 Qc4 30.Rb4 Qa6 31.Rb1 a3 32.Ra1 a2 33.Qe3 Rb8 34.Nd2 Qa3 35.Kg2 Qb2 36.Qe1 f6 0–1. bratek55 (1645) – beginner2011 (1685), kurnik, 2012.

8.d3 e6 9.Nbd2 Bd6 10.Nb3 Qc7 11.h3 Bh5 (11...Bf3 12.Bf3 0–0 13.Qe2+=) 12.Nfd4 (12.g4 Ng4 13.hg4 Bg4 14.c4+= (14.Bg7? Rg8 15.Kh1 Rg7–+)) 12...Be2+= 13.Qe2 0–0 14.a4 Rfe8 15.Rfc1 Nf8 16.c4 Ng6 17.cd5 ed5 18.Nb5 Qe7 19.Nd6 Qd6 20.Ba3 Qe6 21.Nc5 Qc8 22.Qc2 Nd7 23.Rab1 Nc5 24.Bc5 Qd7 25.Qb3 h6 26.Qb7 Qb7 27.Rb7 Ra4 28.Bd4 Rc8 29.Rb6 Ra3 30.Rbc6 Rc6 31.Rc6 Rd3 32.Rc8 Kh7 33.Rc7 Kg8 34.Kf1 Nf8?? (better is 34...Nf4! 35.Rc1 Ne6=) 35.Rc8+– 1–0. bratek55 (1745) – podhrat (1630), kurnik, 2011.

8.d3 e6 9.Nbd2 Bd6 10.e4 Bf3 11.Bf3 0–0 12.Re1 Qc7 13.g3 (13.h3 Ba3 14.Qc1 Bb2 15.Qb2 de4 16.Ne4 Ne4 17.Re4 Ra5=+) 13...Rfd8 (13...b5 14.Bg2–/+) 14.Qe2 de4 15.Ne4 Ne4 16.Qe4 Ra6 (16...Be7 17.Reb1=+) 17.a4 Rda8 (17...Be7 18.Ra2=) 18.Bc3 Nb6 19.a5 Nd5 20.Bd2 Qe7 21.Rab1+= Nf6 22.Qc4 R6a7 23.d4 Qd7 24.Rb3 Nd5 25.Reb1 Rb8 26.Bg2 h6 27.h3 Ne7 28.Qc3 Rd8 29.Be4 Nf5 30.Qb2 Bc7 31.Rb7 (31.Bf5!? ef5 32.Rb7 Rb7 33.Qb7+/–) ½–½. Rosner,Dirk – Hind,Alan, corr 3GMM½–05, 1998.

8.Nd4 Be2=+ 9.Qe2 e5 10.Nb3 Qb4 11.f4 Bd6 12.a4 Qe4 13.d3 Qg6 14.fe5 Ne5 15.h3 0–0 16.Nd4 Rfe8 17.Nf5 Bc7 18.Qe1 b6 19.Nd2 Ned7 20.Qh4 Be5 21.Be5 Re5 22.Qf4 Kh8 ½–½. Preuss – Hirtreiter, corr, 1990.

8.Re1 Bf3 9.Bf3 e5 =.

8.Ne5 Be2 9.Qe2 Qb4 10.Bc3 Qa4 11.Nd7 Nd7 12.f4 (Better is 12.d3!?=) 12...Qc2–/+ (13.Bd4 c5–/+) –/+ . strongplayer26 (2455) – Mely (2715), ChessWorld.net, 2003.

5.e3 d6

6.Bc3 Qc7 7.d4 =.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 Bf5 9.d4 =.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 Bg4 9.Be2 Be7 10.0–0 0–0 11.Nc3 Re8 12.d4 Ra3 13.Qc2 Qa5 14.Nb1 Ra4 15.h3 Bf5 16.e4 Be6 17.Nfd2 Qa7 18.Nc3 Ra3 19.Rfd1 Na6 20.Qc1 Nc7 21.d5 Bd7 22.Rb1 Ra8 a2 seems the pivot of the position 23.dc6 bc6 24.Rb3 f5 25.Ra3 Qa3 26.Qa3 Ra3 27.e5 Rc3 28.ed6 Bd6 ½–½. Kuni,Richard (1700) – Rushton,Darren (1730), TT–02, 2002.

6.Bc3 Qc7 7.Bf6 ef6 8.c4 g6 9.d4 Bg7 10.Bd3 f5 11.0–0 0–0 12.Nc3 Be6 13.Qb3 b5 14.a4 bc4 15.Bc4 Bc4 16.Qc4+/– Qe7 17.Rfb1 ½–½. woschkat (2395) – epiglotis (2550), net–chess.com, 2003.

6.Bc3 Qh5 7.d4 e6 8.a4 Be7 9.Be2 b6 10.Nfd2 Qh6 11.0–0 0–0 12.a5 ba5 13.Ba5 Bb7 14.Nc3 Nbd7 15.Qb1 Rfb8 (16.Bc7 Ra1 17.Qa1 Rc8=+). cnita (2110) – pierred (2405), net–chess.com, 2006.

6.Be2 e5

7.0–0 b5 8.d3 Be7 9.Nbd2 0–0 10.c4 Be6 11.Nb3 Qa4 12.cb5 cb5 13.Ng5 Bd7 14.Bf3 Bc6 15.Qd2 Nd5 16.Ne4 f5=+ 17.Ng3 f4 18.Nf5 Rf5= 19.e4 Ne3 20.fe3= fe3 21.Qe3 Bg5 22.Qb6 Rf8 23.Bg4+= Bf6 24.Be6 Kh8 25.Rf2 Qa7 26.Qa7 Ra7 ½–½. Zimmermann,Joerg (1700) – Rushton,Darren (1730), TT–02.35 TSC, 2002.

7.0–0 e4 8.Nd4 Qg5 9.f4 Qg6 10.Kh1 h5 11.Nc3 Nbd7 12.d3 Ng4 (better is 12...Nc5=) 13.Bg4?? (better is 13.Qd2+/–) 13...hg4–/+ 14.Ne4 Qh6 15.h3 Nf6 16.Nf6 Qf6 17.e4 Qh4 (17...gh3 18.g3–/+) 18.Qe1+= gh3 19.g3 (19.Qh4!? Rh4 20.f5=) 19...Qd8 20.Qe2 h2 21.Rf2 1–0. Law,Stephen (1870) – Konieczny,Franz, IECG, 2004.

7.Nc3 Be7 =+.

7.0–0 Be7

8.c4 0–0 9.Bc3 Qc7 10.d4 e4 11.Ne1 d5 12.c5= Bf5 13.a4 Re8 14.a5 Na6 15.Nd2 Qd7 16.Nb3 Bd8 17.Nd2 Bc7 18.Nc2 Ra7 19.Re1 Ng4 20.Nf1= Qe6 21.Ng3 Qg6 22.Bg4 Bg4=+ 23.Qd2 h5 24.Reb1 h4–/+ 25.Nf1 Bh3 26.Ne1 Bg2 27.Ng2=+ h3 28.Ng3 hg2 29.Kg2 f5 30.Qe2 f4 31.Qh5 Qh5 32.Nh5 Rf8 33.Rb3 fe3 34.fe3 Rf3 35.Be1 =. Busch – Bendig,Frank, corr SOK–88–27, 1988.

8.c4 0–0 9.Nc3 e4 10.Nd4 Qg5 =.

8.c4 0–0 9.Nc3 Bf5 10.d3 Nfd7 11.Nd2 Be6 12.Nb3 Qb6 13.d4 Na6 14.a4 Qc7 15.d5 Bf5 16.f4 f6 17.fe5 fe5 18.dc6 bc6 19.Nd5! Qd8 20.Na5! cd5 21.Nc6 Qe8 22.Qd5 Kh8 23.Ne7 Qe7 24.Rf5! Nf6 25.Qd1 Rab8 26.Ba3 Rfd8 27.Qe1 (27.a5 Qe6 28.Qc2 Rbc8+/–) ½–½. Woschkat,Karl_Heinz – Bicker,Friedrich_Wilhelm, Schweizer, 2001.

8.c4 e4 9.Nd4 Qg5 10.Re1 (10.f3 Bh3 (10...d5 11.Nc3 0–0 12.cd5 cd5 13.Qc2 Qg6; 10...c5 11.Nb5 Bh3 12.Rf2 0–0 13.N1c3 Bf5; 10...ef3 11.Rf3 0–0 12.Qf1 d5 13.Nf5 Bf5) 11.Rf2 Nbd7= 12.Nc3 Nc5 13.Qc2 Qg6) 10...0–0 (10...d5 11.d3+= Bh3 12.Bf1 Bg4 13.Qc2 c5; 10...c5 11.Nb5 Bh3 12.Bf1 0–0 13.d3 Bg4; 10...Bh3 11.Bf1 Nbd7 12.d3 ed3 13.Nf3 Qg4) 11.Nc3 (11.d3 Bh3 12.Bf1 c5= 13.Nb5 Bg4) 11...c5 (11...Bh3 12.Bf1+= c5 13.Nde2 Bd7) 12.Ndb5= Bh3 13.g3 Nc6 14.Nc7 Rab8 (14...Ra5 15.d3 ed3 16.Qd3=) 15.Qb1 (15.d3 Bf5=) 15...Qg6 16.N7d5 Nd5 17.Nd5 Bg5 18.Nf4 (18.d3!? Bf5 19.Rd1=) 18...Bf4+= 19.ef4 Rfe8 20.f3 Bf5 21.Qd1 Nb4 22.fe4 Be4 23.Bh5 Qh6 24.Bc3 Nd3 25.Re3 Re6 26.Bg4 Nf2+= 27.Qe2 Ng4 28.Qg4 f5 29.Qe2 Rbe8 30.Re1 d5 31.d4 cd4 32.Bd4 Rd8 33.cd5 Rd5 34.Qb2 Red6+= 35.Qb3 Qh3 36.R3e2= Qh5 37.a4 Qf7 38.Be5 Rd8 39.Kf2 Bd3 40.Re3 Bc4 41.Qc3 Rd2 42.Kg1 Qd5 43.Rf3 Rd1 44.Rfe3? Qc5–+ 45.Kg2 Qc6 46.Kf2 R8d2 47.R3e2 Re1 48.Qd2 Re2 (48...Re2 49.Qe2 Be2 50.Ke2 Qc2 51.Kf3 Qh2–+; 48...Be2?! 49.Ke1 (49.Qe1? Qf3 50.Kg1 Bd3–+) 49...Bg4 50.Qd8 Kf7 51.Qc7 Qc7 52.Bc7=) 0–1. Bonetti,Shane – Tinker (2500), ICC, 2002.

8.d3 0–0 9.c4 e4 (9...Qb4 10.Qb3 Qb3 11.ab3 Ra1 12.Ba1=) 10.Nd4 Nbd7 11.Nd2 ed3 (11...Qb4 12.Qc2=) 12.Bd3 Ne5 13.N2b3 Qc7 14.Qe2 Re8 15.Rfd1 d5 16.cd5= Nd5 17.Nf5 Bf6 18.Nbd4 g6 19.Ng3 Bg4 20.Nf3? Nf4!–+ (21.Qc2 Nfd3 (21...Ned3?! 22.Bf6 Bf3 23.gf3=+) 22.Rd3 Bf3 23.gf3 Nd3 24.Bf6 Qd6–+) 0–1. Koerner,Helmut – Hafner,Christian, Berliner Sommer, 1994.

8.d4 e4 9.Bc3 Qd5 =+.

5.e3 e6

6.c4 Be7 7.Bc3 Qd8 8.d4 d5 9.c5 0–0 10.Bd3 b6 11.cb6 Qb6 12.0–0 Ba6 13.a4 Ne4 14.Qc2 Bd3 15.Qd3 Qa6 16.Qa6 Na6 17.Rc1 c5 18.Kf1 Bf6 19.a5 Rab8 20.Ke2 Rfc8 21.Nbd2 Nc3 22.Rc3 c4 23.Ne5 Rb2 24.Nd7 Be7 25.Kd1 Bb4 (25...Rb5 26.Nb6 Rd8 27.Rcc1+=) 26.Rc2= Rc2 27.Kc2 f6 28.Nb6 Rd8 29.Nf3 Kf7 30.h4 ½–½. charmedones (1970) – soidog (1915), gameknot.com, 2014.

6.Be2 Be7 7.0–0 0–0 8.c4 d5 9.Qc2 Nbd7 10.Re1 Qa4 11.Qa4 Ra4 12.Nc3 Ra8 13.d4 Re8 14.a3 h6 15.Rac1 (15.c5!?=) 15…Nh7. Bigonnet,Jean Michel (1890) – Humeau,Cyril (2160), Bastia blind rap 2nd, 2007.

4.f4 Qb4

5.Bc3 Qf4 6.Nf3 d5 –/+.

5.Bc3 Qf4 6.Nf3 d6 –/+.

5.Be5 d6–/+ 6.a3 Qa4 7.Nc3? Qa5 8.Bd4–/+ e5 9.fe5 de5 10.Bf2 Be6 11.Nf3=+ f6 12.e3 Ba3 13.Nb1=+ Qb4 14.c4 Nd7 15.Qc2 Ne7 16.Qc3+= Qc3 17.dc3+/– Nc5 18.Ra3 Kd7 19.Be2+= Ra3 20.Na3 Ra8 21.Nb1 Ra2 22.g4 Ne4 23.Rg1 h6 24.Nfd2+/– Nd2 25.Nd2 Ra1 26.Bd1 Rc1 27.Nb3 Rc3?? 28.Nc5+– (28...Ke8 29.Ne6+–) 1–0. Kossobudzki,Robert – Mus,Roman, corr 2. AMM Poland, 1994.

5.Be5 d6–/+ 6.a3 Qa5 7.Bc3 =+.

5.Be5 d6–/+ 6.c3?? Qb2–+ 7.c4 (7.Na3 Ra3 (7...de5?! 8.Nc4 Qb5 9.e4–+) 8.Bd4 c5–+) 7...de5 8.Nc3 ef4 9.Nh3 (9.Rb1 Qa3–+) 9...Bh3 10.gh3 Qb6 11.Bg2 e5 12.Rb1 Qc7 13.Qb3 Ra7 14.Rg1 Bc5 15.Rf1 Ne7 16.Ne4 Nd7 17.h4 b6 18.a4 0–0 (19.Nc5 Nc5 20.Qb6 Qb6 (20...Ra4?? 21.Qc7 Ng6 22.h5+–) 21.Rb6 Na4–+; 18...Bd4 19.Qb4–+) 0–1. Sterle – Diener,Diener, corr, 1987.

3.ba5 Ra5

4.a3 e6 5.e4 Nf6 6.e5 Ne4 7.d3?? (7.Nf3 d5=) 7...Rd5?? (Better is 7...Nf2 8.Kf2 Qb6 9.Kg3 Qb2–+) 8.Nc3 (8.Ra2 Qa5 9.c3 d6=+) 8...Nc3 9.Bc3 f6 10.ef6+/– gf6 11.Be2 Bc5 12.Nf3 e5 13.0–0 e4 14.Nd2+– e3 15.fe3 Be3 16.Kh1 f5?? 17.Bh8 Qg5 18.Nf3 Qg8 19.Bb2 f4 20.Ne5 Bd4 21.Bd4 Rd4 22.Bh5 Kf8 23.Qg4 1–0. KHW – tobey, ChessWorld.net, 2001.

4.Nc3 d5 5.d4 e5 6.de5 Qb6 7.Rb1 Bb4 8.a3 Ra3 9.Qc1 Rc3 ½–½. Smith,Simon – Kulbacki,Jim, corr or02–024, 2002.

4.c4 d6 5.Qc2 Na6 6.a3 Nf6 7.Nf3 e5 8.d3 Nc5 9.Nbd2 Be7 10.g3 0–0 11.Bg2 b5 12.cb5 cb5 13.0–0 Bb7 14.e4 Qb6 15.d4 Nce4 16.de5 de5 17.Ne5 Nd2 18.Qd2 Bg2 19.Kg2 Rd8 20.Qf4 Qb7 21.f3 Bd6 22.Rfd1 Raa8 23.Qd4 Be7 24.Qe3 Rd1 25.Rd1 Rd8 26.Rd8 Bd8 27.Qd4 Be7 28.Nd7 Bf8 29.Nf6 gf6 30.Qf6 1–0. sagonek – oldi62, playok.com, 2012.

4.c4 e6 5.Nf3 Nf6 6.e3 Be7 7.Be2 0–0 8.0–0 d5 9.d4 Nbd7 10.c5 b6 11.cb6 Qb6 12.Qc2 Ba6=+ 13.Ba6 Qa6 14.Nbd2 Rb8 15.Bc3 Ra3 16.Nb3 Nb6 17.Bb2 Ra2?? 18.Ra2+– Qa2 19.Ra1 Qa1 20.Ba1 Nc4 21.h3 Ne4 22.Bc3?? Ra8?? 23.Ne5 Na3? 24.Qb2 Bf8 25.Nc6 Nb5 26.Bb4 Bb4 27.Nb4 Nec3 28.Nc5 h6 29.Nc6 Ra2 30.Qb4 Ra1 31.Kh2 Rb1 32.Qa5 Ne4 33.Qd8 Kh7 34.f3 Nf6+– 35.Qf8 Nc3 36.Qf7 Nd1 37.Ne6 Ne3 38.Qg7# 1–0. Rabiator (1930) – Eralos (1890), Partida evaluada, 3m + 0s, 2006.

4.e3 Rc5 5.Nf3 d6 6.d4 Rd5 7.c4 Ra5 8.Be2 Bf5 9.0–0 e6 10.Nbd2 Bg4 11.Nb3 Ra8 12.h3 Bh5 13.e4 Nf6 14.Nbd2 Be7 15.Qc2 0–0 16.Qc3 Nbd7 17.Rfe1 Qc7 18.a3 Rfc8 19.Rac1 Qd8 20.e5 de5 21.Ne5 Be2 22.Re2 b5 23.Ne4 Ne5 24.de5 Ne4 25.Re4 bc4 26.Rc4 c5 27.a4 Ra7 28.Ba3 Qd5 29.f4 Rb7 30.Bc5?? Rc5?? 31.Rc5+– Bc5 32.Qc5 Qc5 33.Rc5 Rb1 34.Kh2 f5 35.a5 Ra1 36.Rc6 Ra5 37.Re6 Kf7 38.Rd6 Ra7 39.g4 Ra2 40.Kg3 Ra3 41.Kf2 Ra2 42.Kg3?? Ra3 43.Kg2 Ra2 44.Kg3?? Ra3= ½–½. Bonetti,Shane – MacChess 5.0, 2000.

4.e4 d6 5.d4 Nf6 6.Bd3 Na6 7.Bc3 Rg5 8.g3 Rh5 9.Nd2 Nc7 10.a4 e6 11.e5+– de5 12.de5 Qd5 13.ef6=+ Qh1 14.Qh5 Qg1 15.Ke2 g6 16.Qe5 Qh2 17.Qc7 Qh5 18.Nf3 (18...Qd5 19.Ne5+–) 1–0. woschkat (2395) – daver (2235), net–chess.com, 2003.

4.e4 Nf6 5.Qf3 Qb6 6.Bc3 Ra2!–/+ 7.Qd1? Ne4–+ 8.d4?? e5 9.Ra2+– Bb4 10.Ne2 Na6? 11.g3 Nc3= 12.Nbc3 ed4–/+ 13.Qd4?? Qd4–+ 14.Nd4 Bc3 15.Ke2 Bd4 16.Bg2 0–0 17.Rd1 Bf6 18.Kf1 d5 19.Re1 Bf5 20.Bf3 Bc3 21.Re2 Nb4 22.Ra7 Bc2 0–1. Steve20 – SIRMO, chessworld.net, 2006.

4.Nf3 e6 5.g3 f5 6.Bg2 d5 7.0–0 Nd7 8.Nd4 Ndf6 9.c4 (9.Nb3 Ra8=) 9...Bd6 (9...dc4!? 10.Qc2 Qb6+=) 10.Nb3= Ra7 11.c5 Bc7 12.d4 Nh6 13.Nc3 0–0 14.f4 Qe8 15.Qd2 Qg6 16.a4 Nhg4 17.h3 Nh6 18.Qe3 Nh5 19.Rf3 Kh8 20.Nc1 Ng8 21.Nd3 Ngf6 22.Ne5 Be5 (22...Qh6!?+=) 23.fe5+/– (worse is 23.de5 Nd7+=) 23…Ne4 (23...Ne4 24.g4 Nhg3 25.Rg3 Ng3 26.Qg3 Bd7+–) 0–1. Poulsen,Rene (2080) – Vermaas,Fred, IECG, 2004.

4.Bc3 Ra4

5.Nf3 Na6 6.Bd4 f6 (6...b5 7.e4=) 7.c4 Qa5 (7...Rc4!? 8.e3 d5=) 8.Bc3+/– Nb4 9.a3 Qa7 10.Bd4 (10.Bb4?! Rb4 11.e3 Ra4=; 10.ab4?! Ra1 11.Bd4 b6 12.Ba1 Qa1=) 10...Qa8 11.Bb2 Ra5 12.d4 Na6 13.Bc3 Rh5 14.Nbd2 Nh6 15.Ne4 Nf7 16.Bd2 g5 17.h4 Rh6 18.Rg1 d5 19.cd5 cd5 20.Nc3 e6 21.e4 de4 22.Bb5 Bd7 23.Bd7 Kd7 24.hg5 Ng5 25.Ng5 fg5 26.Qa4 Kc7 27.Qa5 Kc8 28.Na4 Qa7 29.Nb6 Kd8 30.Bg5 Ke8 31.Bh6 Bh6 32.Qh5 Ke7 33.Qh6 Kd6 34.Nc4 Kd5 35.Qg5 Kc4 36.Rc1 Kb3 37.Qb5 Ka2 38.Rc2 Ka3 39.Rc3 Ka2 40.Qb3 1–0. orane (2100) – robertthomas, Live Game Caissa's Web, 2004.

5.Nf3 d5 6.Bd4 =.

5.Nf3 Nf6 6.Bd4 Ng4 7.e3 Qa5 8.Nc3 Ra3 9.Rb1 d6 10.h3 Ne5 11.Ne5 de5 12.Bb6 Qa8 13.Bc5 Ra5 14.d4 ed4 15.ed4 Nd7 16.Bb4 Rf5 17.Bd3 Rf4 18.Ne2 Rh4 19.Rb2 e5 20.Bf8 Kf8 21.g3 Qa3 22.Qc1 Rh5 23.g4 Qa5 24.c3 Qd5 25.Rh2 Rh6 26.Qe3 ed4 27.Nd4 Nc5 28.Rd2 Bg4 29.Be2 Ne4 30.c4 Qd6 31.Qe4 Qh2 32.Nf5 Qc7 33.Qg4 Rg6 34.Qd4 Ke8 35.Qe3 Re6 36.Ng7 Ke7 37.Ne6 Qa5 38.Nc5 Kf6 39.Qh6 Ke7 40.Qd6 Ke8 41.Qe5 Kf8 42.Nd7 Kg8 43.Qg3 Qg5 44.Qg5 1–0. b4_player (2170) – MB (2090), GameColony.com, 2002.

4.Bc3 Ra8

5.e3 d5 6.Nf3 Nf6 7.Be2 Nbd7 8.0–0 Ne4 9.Bb2 Qb6 10.Qc1 f6 11.d4 Nd6 12.Nbd2 Ra4 13.c4 dc4 14.e4 g6 15.e5 fe5 16.de5 Bg7 17.Qc2 (17.ed6 A) 17...Bb2 18.Qc2 Qb4 19.a3 (< 19.Nc4 Ba1 20.Rb1 Qb1 21.Qb1 Bf6=) 19...Ra3 20.Ra3 Ba3 21.Nc4+/–; B) 17...Qb2 18.Qd1 b5–/+ (18...Qa1?! 19.Qa4 Qf6 20.Ne4=)) 17...Ra6 18.Rfb1 (18.ed6?! Qb2 (18...Bb2?? 19.Nc4 Qc5 20.Qb2+–) 19.Qc4 Ne5= (19...Qa1?? 20.Ra1 ed6 21.Qe6 Kd8 22.Re1+–); 18.Nc4?! Nc4 19.Bc4 Ra5+/–; 18.Bc4?! Nc4 19.Nc4 Qa7+=) 18...Nb5 19.Nc4 Qa7 20.Nd6 ed6 21.Bb5 de5 22.Ba6 Qa6 23.Re1 Qa5 24.Ne5 Ne5 25.Be5 Be5 26.Qb2 0–0 27.Re5 Qc7 28.Rae1 Qg7 29.Qb3 Qf7 30.Re7 Qb3 31.ab3 b6 32.Rc7 c5 33.Ree7 Rd8 34.f4 Bf5 35.Rg7 Kf8 36.Rcf7 Ke8 37.Rb7 Kf8 38.Rh7 Kg8 39.Rhc7 Rd1 40.Kf2 Rd8 41.Rb6 Kf8 42.g4 Bg4 43.Rg6 Bd1 44.Rc5 Bb3 45.h4 Bf7 46.Rgg5 Rd7 47.h5 Rd6 48.Kg3 Rf6 49.Rc7 Be8 50.Ra5 Re6 51.Kg4 Kg8 52.Ra8 Kf8 53.Kg5 Rh6 54.Kh6 (54...Kg8 55.Re8#) 1–0. Reuter,Alfred – Smith,Geoff, IECG, 2000.

5.e3 d5 6.Nf3 Bg4 7.Be2 Nf6 8.d3 Nbd7 9.Ne5 Ne5 10.Be5 Be2 11.Qe2 e6 12.a3 Be7 13.0–0 0–0 14.Bb2 Qb6 15.Ra2 Ra6 16.Nc3 Rfa8 17.Rfa1 Qc7 18.Nb1 Bd6 19.h3 Qe7 20.Qd1 b5 21.c3 Nd7 22.Qc2 Ra4 23.Bc1 Qf6 24.d4 Qe7 25.Qb3 Nb6 26.Nd2 Nc4 27.Nc4 bc4 28.Qb2 Rb8 29.Qc2 Rb3 30.Rb1 Qb7 31.Rba1 Qa7 32.Bb2 Qa5 33.Qc1 c5 34.f4 cd4 35.ed4 Qd8 36.g3 Qf6 37.Qc2 Qg6 38.Qg6=+ hg6 39.Kf2 Kh7 40.Ke3 g5 41.Kf3 gf4 42.gf4 Kg6 43.Kg4 f5 44.Kf3 Kf6 45.h4 Bc7 46.Ke3 (46...g6 47.Re1–/+) –/+. Tagirov,Kajum – Malin,Denis (2155), RUS–ch sf Ufa, 1999.

4.c4 d5

5.e3 e6 6.Bc3 Ra8 7.f4 Nf6 8.Nf3 Nbd7 9.Qc2 Be7 10.Be5 0–0 11.Nc3 Ne8 12.Ne2 f6 13.Bb2 Nc5 14.Ng3 Na4 15.Bd3 Nb2 16.Qb2 f5 17.0–0 Ra3 18.Ne5 Qa5 19.Rfc1 Ra4 20.Qc2 Bb4 21.Nf1 Nf6 22.cd5 Nd5 23.g4 (23.Bc4 Ra3=) 23...g6 (23...Ba3 24.Rcb1 Nb4 25.Qc3 Nd3 26.Qd3 fg4 27.Qc2–/+) 24.h4? (24.gf5 ef5 25.Bc4 Ba3=) 24...Bd6 (better is 24...Ba3 25.Rcb1 Nb4–/+) 25.Nc4= Rc4 26.Bc4 fg4 27.Qd1 e5 (27...Ba3 28.Rcb1= (28.Qg4 e5 29.Qg5 Bc1 30.Rc1 ef4=+)) 28.e4 Bc5 29.Kh1 ef4 (better is 29...Bd4!? 30.Rab1 Qd8= (< 30...Rf4 31.ed5 b5 32.Bd3+/–)) 30.ed5+/– Qd8 31.dc6 Kh8 32.d4 (32.Nh2!?+/–) 32...Qh4 (32...Bd4 33.Rc2 bc6=) 33.Kg1?? (better is 33.Nh2 Be7 34.Qe1+/–) 33...f3–+ 34.Rc2 f2 35.Rf2 Qf2 36.Kh1 Bd4 37.Nh2 g3 38.Qg1 Qg1 39.Rg1 Bg1 40.Nf1 Bf2 41.c7 (41.Kg2 bc6 42.Ng3 Rf4–+) 0–1. Palmi,Herbert – Lettl,Gerhard, Niederbayern–chA, 1999.

5.e3 e6 6.Nf3 dc4 7.Bc4 b5 8.Be2 =.

5.e3 e6 6.Nf3 f5 7.Be2 (7.Bc3 Ra7+=) 7...Nd7 8.h4 (8.0–0 dc4 9.Bc4 Nb6+=) 8...Ngf6 9.d4 Bb4 10.Kf1 (10.Bc3 Bc3 11.Nc3 dc4 12.Bc4 Nb6=) 10...0–0 (10...dc4 11.a3 Bd6 12.Bc4=+) 11.c5 (11.Qb3 Be7=) 11...Ra7 (11...b6 12.a3 Bc5 13.dc5 Nc5 14.Bc3+/–) 12.Bc3 Bc3 13.Nc3 ½–½. Labahn,Wolfgang – Ilgner,A, Neustadt, 1988.

5.e3 Nf6 6.Bc3 Ra8 7.Nf3 e6 8.Be2 Be7 0–1. Tejler – Steche, corr SOK–89–33.

5.e3 Nf6 6.Nf3 Bg4 7.h3 Bf3 8.Qf3 dc4 9.Bc4 e6 10.Nc3 Ba3 11.Rb1 b5 12.Bb3 b4 13.Ba3 bc3 14.Bc1 Qd3 15.Ra1 Ne4 16.Qe2 Qe2 17.Ke2 cd2 18.Bd2 Nd2 19.Kd2 Ke7 20.Rhc1 Rc8 21.Ke2 Nd7 22.Rab1 c5 23.Bc4 Ne5 24.Rb7 Kd6 25.Bb3 Kc6 26.Rb4 Rca8 27.a4 h6 28.g3 Nd7 29.Rf4 Rb8 30.Rc3 Nf6 31.Rd3 Ra7 32.Rc4 Nd5 33.h4 h5 34.g4 Rab7 35.Bc2 Rb2 36.Kd2 Ra2 37.gh5 Rbb2 38.Kc1 Nb4 39.Rdc3 Rc2 40.Rc2 Nc2 41.Rc2 Ra4 42.f4 Ra1 43.Kb2 Rg1 44.Kc3 Kd5 45.Kd3 c4 0–1. Dopper – Rosner, email SOK–E007A 1999.

4.c4 Nf6

5.e3 Na6 6.Bc3 Rf5 7.g4 Rc5 (7...Ra5 8.Ba5 Qa5 9.Nc3+= d6 10.Bh3 g5 11.Qa4 Qd8 12.Nf3 Bg7 13.d4) 8.d4 Rg5 (8...Ra5 9.Qd2 (9.c5 d5 10.Qd2 Ra4 11.Qc2 Ra5 12.f3 e5 13.g5) 9...Ra4 10.Qc2= Ra5 11.Nf3 Ng4 12.c5 d5 13.Nbd2) 9.f3+= d6 (9...Ra5 10.Nh3+= d5 11.Ba5 Qa5 12.Qd2 Nb4 13.Nc3) 10.Nh3 Ra5 11.Qd2 (11.Nd2 h5 12.g5 Bh3 13.gf6) 11...Ra4 12.Qc2 b5?? (better is 12...Ra5+/– 13.Nd2; 12...Rb4 13.Nd2) 13.cb5+– Ra5 (13...Rb4 14.ba6 Rb8 15.Bd2+–) 14.ba6 Ba6 (14...Ra6 15.Ba6 Ba6 16.Bd2+–) 15.Ba5 Qa5 16.Qc3 Qb6 17.Qb3 Qb3 (17...Qa5 18.Nd2 Bc8 19.Rc1+–) 18.ab3 Bf1 19.Rf1 Nd5 (19...e6 20.Nc3+–) 20.Ra8 (20.Kd2 f6+–) 20...Kd7 21.Kd2 (21.Ra7 Kc8 22.Kd2 h5+–) 21...g6 (21...h5 22.g5+–) 22.Nc3 (better is 22.Ng5 f6 23.Nf7 Rg8+–) 22...Bg7 (22...Nc7 23.Rb8 f6+–) 23.Rh8 Bh8 24.Nd5 (24.Nd5 cd5 25.Ra1+–) 1–0. Hingst,Thomas (2085) – Padilla,Jesus (2130), RSS5E NoEngine–111, 2010.

5.Nf3 d5 6.e3 Bg4 7.d4 e6 8.Nbd2 Qb6 9.Bc3 Ra3 10.Qc2 Bf3 11.gf3 Be7 12.c5 Qc7 13.Bb4 Ra7 14.a3 0–0 15.Bd3 Nbd7 16.f4 Rfa8 17.Ke2 h6 18.Rhg1= Nh5 19.Bg6?? fg6–/+ 20.Qg6 Ndf6 21.Nf3 Qf4?? 22.Ng5?? hg5–+ 23.Rg5 Qe4 24.Qh6 Kf7 25.Rg7 Ng7 26.Rg1 Nf5 27.Qg6 Kf8 28.h4 Nd4 29.Kf1 Qg6 30.Rg6 Nf5 (31.Rg1 Nh4–+) 0–1. Thiele,J – Haase, Sta–Neu, 1991.

5.Nf3 d5 6.e3 Bg4 7.h3 Bh5 8.d4 e6 9.c5 b6 10.Bc3 Ra8 11.cb6 Qb6 12.Be2 Ne4 13.0–0 Nc3 14.Nc3 Qa5 15.Ne5 Bg6 16.Qb3 Bb4 17.Rfc1 Qa3 18.Qa3 Ba3 19.Ng6 Bc1 20.Rc1 (better is 20.Nh8 Bb2 21.Rb1 Bc3 22.Rb3+=) 20...hg6–/+ 21.a4 Kd7 22.e4 f5 23.e5 Rh4 24.Rd1 Na6 25.Kh2 Rhh8 26.f4 Rhb8 27.Rd2 Rb3 28.Na2 Nb4 29.Nb4 Rb4 30.Bd1 c5! 31.dc5 Rf4 32.Rb2 Rc8 33.a5 Rc4 34.a6 R4c5 35.Ba4 Ke7 36.Rb7 R5c7 37.Rb6 Ra7 38.Bc6 d4 39.Kg3 Rac7 40.Rb7 Kd8 41.Rc7 Kc7 42.Bb7 Rd8 43.Kf2 d3 44.Ke1 d2 45.Kd1 Kb6 46.h4 f4 47.Bf3 Ka6 48.Kc2 Kb5 49.Kd1 Kc4 50.Kc2 d1Q! 51.Bd1 Rd1! 52.Kd1 Kd4 53.Ke2 Ke5 54.Kf3 Kf5 55.g4 fg3! 56.Kg3 e5 57.Kf3 e4 58.Ke3 Ke5 59.Kf2 Kf4 60.Ke2 e3 61.Ke1 Kg3 62.Ke2 Kh4 63.Ke3 Kg3 64.Ke2 g5 65.Ke3 g4 66.Ke2 Kg2 67.Ke1 Kh2 68.Kf2 g3 69.Kf3 g2 70.Kg4 g1Q 71.Kh5 Kg3 72.Kg6–+ Kf4 (72...Kf4 73.Kf7 Kf5 74.Ke7 Qc5 75.Kd7 g6 76.Ke8 Ke6 77.Kd8 g5 78.Ke8 Qe7) 0–1. Liszewski,Krzysztof – Matulka,Franciszek, Otwarta Liga Mazowiecka Poland, 2008.

5.Nf3 g6 6.a4 Bg7 7.Nc3 d5 8.e3 0–0 9.d4 Bg4 10.Be2 Nbd7 11.c5 b6 Black gets strong initiative 12.cb6 Qb6 13.Ba3 Re8 14.Rb1= Qc7 15.0–0 Ne4 16.Ne4 de4–/+ 17.Nd2 Be2 18.Qe2 Ra4 19.Ra1 Rea8 20.Nc4 c5–/+ 21.Rfc1 Qa7 22.g3? cd4–+ 23.Bb2 d3 24.Qd2 Bb2 (25.Ra4 Qa4 (25...Bc1 26.Ra7 Ra7 27.Qc1+/–) 26.Nb2 Ne5 27.Rc8 Rc8–+) 0–1. Klomp,C – Daamen,Ferry, Valkenswaard, 1988.

4.e3 Na6

5.c4 Nb4 6.a3 Na6 7.Bc3 Rf5 8.h4 e5 9.Bd3 Rf6 10.Be5 Re6 11.Bd4 c5 12.Bb2 Rb6 13.Qc2 Nc7 14.Nc3 Nf6 15.Rb1 h6 16.Nf3 Be7 17.Na4 Ra6 18.Bf6 gf6 19.Be4 Ra7 20.Nb6 Ra3 21.0–0 Ra7 22.Qb2 Kf8 23.Nc8 Qc8 24.Bb7 Qb7 25.Qb7 Rb7 26.Rb7 Bd8 27.Ra1 Ke8 28.Raa7 Ne6 29.d4 cd4 30.ed4 Nf8 31.d5 Ng6 32.d6 Nf8 33.Rb8 Ne6 34.Nd4 f5 35.Ne6 de6 36.c5 Rg8 37.Rd8 1–0. Maarten – Elton Self, itsyourturn.com, 2001.

5.Be2 Nb4 6.a3 Nd5 7.c4 Nb6 8.Nf3 Na4 9.Bc1 Nf6 10.0–0 Ne4 11.Qc2 d5 12.d3 Nec5 13.cd5 cd5 14.d4 Ne4 15.Bd3 Bf5 16.Nh4 Bd7 17.Be4 de4 18.Qe4 Rb5 19.Qc2 Rh5 20.Nf3 Bb5 21.Re1 e6 22.Bd2 Bd6 23.Rc1 0–0 24.Bb4 Bb4 25.ab4 Nb6 26.Ra5 Qd6 27.Qd2 Rf5 28.Ne5 Be8 29.b5 Rh5 30.Qe2 f6 31.Nf3 Qb4 32.Qa2 Nd5 33.e4 Nf4 34.Rc4 Qd6 35.Nc3 Bd7 36.e5 fe5 37.de5 Qd3 38.Ra8 Ng6 39.Rf8 Nf8 40.Qb3 b6 41.Rd4 Qg6 42.Rd6 Qe8 43.Qc4 Rh6 44.Rb6 Ng6 45.Rd6 Rh5 46.Qd4 Nf8 47.b6 Bc6 48.Nd2 Qa8 49.Rd8 Qa1 50.Nf1 Rf5 51.Qc4 Qb2 52.Qc5 Bb7 53.Ng3 Rf7 54.Rd1 Nd7 55.Qe3 Qa3 56.Rb1 Nc5 57.Qd4 Rd7 58.Qc4 Ba6 59.Qb4 Qb4 60.Rb4 Rb7 61.Nge4 Nd3 62.Rb1 Rb8 63.Ng5 Ne5 64.Ne6 Bd3 65.Re1 Nd7 66.Ng7 Rb6 67.f4 Rc6 68.Nd5 Kg7 69.Re7 Kf8 70.Rd7 Rc1 71.Kf2 Rf1 72.Kg3 Bg6 73.Ne3 Rc1 74.f5 Ke8 75.Rd4 Bf7 76.Rf4 Re1 77.Kf2 Rh1 78.h3 Kd7 79.f6 Kd6 80.Rf3 Rc1 81.g4 Rc5 82.h4 Rc1 83.g5 Rc5 84.Kg3 Rc1 85.Rf5 Re1 86.Kf4 Rb1 87.Kf3 Bh5 88.Kg3 Rb3 89.Kf2 Bf7 90.Ra5 Rb2 91.Kf3 Bh5 92.Kg3 Rb3 93.Kf2 Rb2 94.Kg1 Rb4 95.Nf5 Kc6 96.Ra7 Rb1 97.Kf2 Rb2 98.Ke3 Rb3 99.Ke4 Rb4 100.Nd4 Kc5 101.Rd7 Bg6 102.Ke5 Rb1 103.Ne6 Kc6 104.Rc7 Kb6 105.Rh7 Re1 106.Kd6 Bh7 107.f7 Rd1 108.Ke7 Rf1 109.f8Q Rf8 110.Nf8 Bg8 111.h5 Kc5 112.g6 1–0. Machete99 – guest927, ICC, 2002.

5.Qg4 Nf6 6.Qh4 Qb6 7.Bd4 c5 8.Bc3 Ra2–/+ 9.Bf6?? Ra1–+ 10.Ba1 Qb1 11.Ke2 Qa1 12.Nf3 e6 13.g3 b6 14.Bg2 Qb2 15.c3 Nc7 16.Qf4 Ba6 17.c4 d6 18.Ng5 f6 19.Bc6 Ke7 20.Nh3 Qc2 21.Ra1 Qc4 22.Kf3 Qf4 23.Nf4 g5 24.Nh5 Bh6 25.g4 Rc8 26.Ra6 Na6 27.Bb7 Rb8 28.Ba6 b5 29.Ng3 Rb6 30.Bc8 b4 31.Ne4 b3 32.Nc3 b2 33.Nb1 d5 34.Ke2 Kd8 0–1. jammboy – SIRMO, ChessWorld.net, 2006.

4.e3 d5

5.Bc3 Ra7 =.

5.c4 Be6 6.cd5 Bd5 7.Nc3 e5 8.Nd5 Qd5 9.Qc2 Nd7 10.e4 Qc5 11.Bc3 Ra3 12.Nf3 Ngf6 13.Bd3 Bd6 14.Bb2 Qc2 15.Bc2 Ra8 16.0–0 0–0 17.Rfd1 Rfe8 18.d4 ed4 19.Bd4 Ne4 20.Bg7 Kg7 21.Be4 Re4 22.Rd6 Nf6 23.Kf1 Rea4 24.Nd4 R4a5 25.a3 Ne4 26.Rd7 Ra3 27.Ra3 Ra3 28.Rb7 c5 29.Ne6 Kf6 30.Nd8 Nd6 31.Rd7 Ra6 ½–½. Woschkat,Karl_Heinz – Rosner,Dirk, Tiger SC, 2000.

5.c4 Nf6 6.d4 (6.Bc3 Ra8=) 6...Bf5 7.Qb3 (7.Nf3 e6=) 7...Ra6 8.c5 (8.Qb7? Rb6 9.Qa7 Rb2–+) 8...Ra7 (8...b5 9.Nc3=) 9.Nc3 (9.Nf3 Nbd7=) 9...e5 (9...Nbd7 10.Nf3=) 10.Nf3 Nbd7 11.Be2 ed4 (11...Be7 12.0–0=) 12.ed4 Be7 13.h3 (13.0–0 0–0=) 13...0–0 14.a4 (14.0–0 Re8=) 14...Re8 (14...Ne4 15.0–0=) 15.0–0= Ne4 (15...Qa5 16.Bc1=) 16.Ne4 (16.Rfe1 Nc3 17.Bc3 Bf6=) 16...Be4 (16...de4 17.Bc4 Bg6 18.Nh2=) 17.Rfe1= Bf6 18.Nd2 Bg6 19.Bg4 (19.Bc3 Qc7=) 19...Re1 20.Re1 Nf8 21.Bc3 Qa8 Attacking the isolated pawn on a4 22.Ra1 h5 23.Bd1 (23.Bf3 Ne6 24.Qb4 Nf4=) 23...Ne6 24.Nf3 (24.Qb4 Nf4=) 24...Be4=+ 25.Qb4 White intends a5 25...Qb8 (25...Nf4 26.Bd2 Nd3 27.Qc3=) 26.Ne5 Be5 27.de5 (27.Bh5?? Bh2 28.Kh1 Nf4 29.Bf7 Kf7–+) 27...g6 (27...Qf8 28.a5=) 28.a5+= Qf8 The isolani on c5 becomes a target 29.Qb6 Qa8 (29...Ra6 30.Qb7 Nc5 31.Qb2+/–) 30.Bd2+/– Bd3 (30...Qb8 31.Rc1+=) 31.Qb4 Qf8 32.Ra3 (32.Be3 Bb5+/–) 32...Bb5+= (32...Nc5 33.Be3 b6 34.Qb6+–) 33.Bh5 (33.Rc3 Qg7+=) 33...Qc5 (33...gh5 34.Rg3 Kh7 35.Qb1 f5 36.ef6 Kh8+–) 34.Qc5+= Nc5 35.Be3 gh5 36.Bc5 Ra8 37.f4 Kh7 38.Kf2 (38.f5 Re8 39.Re3 Bc4+=) 38...Kg6 (38...h4 39.g4+=) 39.g4 Kh6 40.f5 (40.Ke3 hg4 41.hg4 Bc4+=) 40...Bc4 (40...Re8 41.Be3 Kh7 42.Bd4+=) 41.Kf3+/– Re8 42.Kf4 hg4 43.hg4 Kg7 44.Rh3 Kg8 45.Bf2 (45...Ra8 46.Bh4+–) 1–0. Baer,Werner – Rosner,Dirk, CiF, 2000.

5.d4 Bf5 6.c4 dc4 7.Bc4 e6 8.Nf3 Nf6 9.Nc3 Nbd7 10.0–0 Be7 11.h3 0–0 12.a3 Qa8 13.Bd3 Bd3 14.Qd3 Ba3 15.Rab1 Bd6 16.e4 Bc7 17.e5 Nd5 18.Ng5 g6 19.h4 Rd8 (19...N7b6 20.Ra1–/+) 20.h5 Nf8 21.hg6 hg6 22.Qf3 Rd7 23.Nge4 Nc3 (better is 23...Nh7=) 24.Nf6 (24.Qc3?! Nh7=) 24...Kg7 25.Bc3 Ra3 26.Nd7 Nd7 27.Ra1 Nb6 28.Qf6 Kg8 29.Qe7 Ra1 30.Ra1 Qb8 31.Ba5 Nd5 32.Bc7 Nc7 (32...Ne7?? 33.Bb8 Kg7 34.Ra7+–) 33.Ra3 Nb5?? (better is 33...Qf8 34.Qc5 Qd8+/–) 34.Rh3+– (34...Qf8 35.Rh8 Kh8 36.Qf8 Kh7 37.Qf7 Kh6 38.Qe6 Nd4 39.Qh3 Kg5 40.Qe3 Kf5 41.Qd4 b5 42.g4 Kg5 43.e6 c5 44.Qe5 Kg4 45.e7 b4 46.e8Q g5 47.Q8e6 Kf3 48.Q5f6) 1–0. Loulou – mladsir, HCL–A1177 playchess.de, 2003.

5.Be2 Nf6 =.

5.Nf3 b5 6.Bc3 Ra4 7.Ne5 =.

5.Nf3 Nd7 6.c4 e6 7.d4 Ngf6 8.Qc2 Be7 9.Bd3 0–0 10.Nbd2 Qb6 11.0–0 Qa7 12.Bc3 Ra4 13.cd5 ed5 14.Ne5 h6 15.e4 de4 16.Ne4 Nd5 17.Nd7 Bd7 18.Bd2 Be6 19.Rfe1 Ra8 20.Bc4 Qd4 21.Bd5 cd5 22.Nc3 R4a6 23.Nb5 Qb6 24.Be3 Qb5 0–1. polynesia46 (1630) – 2606cs (1960), kurnik, 2012.

5.Nf3 f6 6.Be2 e5 7.c4 Ne7 8.cd5 cd5 9.0–0 Nec6 10.a4 Bg4 11.h3 Bh5 12.Qb3 Qd7 13.Nc3 Na6 14.Nb5 Nc5 15.Qc2 Bg6 16.d3 Nb4 17.Qd2 Ncd3 18.Bd3 Bd3 19.Rfc1 Be7 20.Bc3 Bb5 21.Bb4 Ra4 22.Be7 Ke7 23.Ra4 Ba4 24.Ra1 Bc6 25.Nh4 Rc8 26.Qd3 e4 27.Qd4 g5 28.Qc5 Kf7 29.Ra7 gh4 30.Qd4 Qc7 31.f3 Qe5 32.Qc5 ef3 33.gf3 Qg3 34.Kf1 Qf3 35.Ke1 Qh3 36.Qd6 Qe3 37.Kf1 Re8 38.Qc6 1–0. rom49szachy – gunarsp, kurnik, 2012.

5.Nf3 Bg4 6.Be2 Nd7 7.0–0 e6 8.d3 (8.Nc3 Ngf6=) 8...Ngf6 9.h3 (9.c4 Bd6=) 9...Bh5 (9...Bf3 10.Bf3 Qa8 11.a3=+) 10.Nbd2 (10.Bc3 Ra6=) 10...Bd6 11.c4 0–0 12.d4 (12.cd5 cd5 (< 12...Nd5 13.Nc4+/–) 13.Bc3 Ra3=+) 12...b6=+ 13.g4 (13.Bc3 Ra3 14.Bb2 Ra7=+) 13...Bg6 14.Nh4 Be4 (14...Qa8 15.g5 Ne8 16.cd5 cd5 17.a4=+) 15.f3 (15.g5 Ne8 16.f4 f5=+) 15...Ne8 16.Ng2 (16.fe4 Qh4 17.Rf3 h5 18.ed5 hg4 (18...cd5?! 19.gh5 Qh5 20.Nb3=; 18...ed5?! 19.gh5 Qh5 20.cd5 cd5 21.Nb3=+) 19.hg4 ed5 20.cd5 cd5–/+) 16...Bg6–/+ 17.Bc3 Ra7 18.e4 de4 19.Ne4 Bb8 20.Be1 (20.d5 cd5 21.cd5 Ra3=+) 20...Be4 (20...Nef6!? 21.Bb4 Re8–/+) 21.fe4= Qc7 22.e5 c5 23.a3 (23.Bc3 cd4 24.Bd4 Ne5–/+) 23...cd4 24.Qd4 Qc5 (24...Qe5 25.Qe5 Be5 26.Rd1–/+) 25.Qc5 bc5 (< 25...Nc5 26.Bc3=) 26.Bh4 (26.a4 Be5 27.Ra2 Bd4 28.Kh2 Nd6–/+) 26...Be5 27.Be7 Ba1 (27...Bd4 28.Kh2 Ba1 29.Ra1–/+) 28.Ra1 f6 29.Bf8 Kf8 30.Bd3 (30.Ra2 Nd6–/+) 30...g6 (30...Ne5 31.Be2–+) 31.Kf2 (31.Kf1 Ne5 32.Be2 Nd6–+) 31...Ne5–+ 32.Ke2 (32.Be2 Nd6–+) 32...Nd6 (32...Nd3?! 33.Kd3 Ra4 34.Kc3–/+) 33.Ne3 f5 (< 33...Nd3 34.Kd3 f5 35.a4–/+) 34.gf5 gf5 (< 34...Nd3 35.Kd3 gf5 36.a4–+) 35.a4 Ke7 36.Ra2 Ra5 (37.Kd2 f4–+) 0–1. Haertig,Manfred – Bitter,Klaus_Martin, ESC, 2000.

5.f4 Nf6 6.Nf3 Bg4 7.Be2 e6 (8.0–0 b5=; 7...b5 8.0–0=). Popstein,Sheila – Lielmezs,Girts, TE–2004–P–01711, 2004.

5.Be2 Bf5

6.Nf3 Nd7 7.0–0 e6 8.Nd4 Bg6 9.f4 c5 10.Nb3 Ra8 11.c4 Ngf6 12.Nc3 h6 13.d4 Qb6 14.cd5 ed5 15.dc5 Bc5 16.Nc5 Qb2 17.Nd7 Nd7 18.Nd5 0–0 19.Rf2 Qa3 20.f5 Bh7 21.Rb1 Nc5 22.Bc4 Ne4 23.Rf4 Nd6 24.Rb3 Qc5 25.Rc3 Qa5 26.f6 Rfd8 27.Bb3 Ne8 28.Qh5 Bg6 29.Qe5 Kh8 30.fg7 Ng7 31.Ra4 Qa4 32.Ba4 Ra4 33.Ne7 Rd1 34.Kf2 Ra2 35.Kg3 Kh7 36.Ng6 Kg6 37.Rc4 h5 38.Rf4 f5 39.Rd4 Rg1 40.Qd6 Kh7 41.Rd2 Ra6 42.Qd7 Rg6 43.Kh3 Re1 44.Rd3 b6 45.g3 h4 46.Rd6 Re3 47.Kh4 Rd6 48.Qd6 Re4 49.Kh3 b5 50.Kg2 b4 51.h4 Ne8 52.Qd5 Ng7 53.Kf2 Kg6 54.Qb3 Ne6 55.Kg2 Re2 56.Kh3 Re4 57.Qa4 Kg7 58.Qd7 Kg6 59.Qb5 Re3 60.Qe8 Kg7 61.Qe7 Kg6 62.Qb4 f4 63.Qb1 Kf6 64.h5 Rg3 65.Kh4 Ng5 66.Qb6 Ke5 67.Qc7 Kf5 68.Qd7 Ke5 69.Qb5 Kf6 70.Qc6 Kf5 71.Qd5 Kf6 72.Qd6 Kf5 73.Qf8 Ke5 74.Qh8 Kf5 75.Qc8 Kf6 76.Qa6 Kf5 77.Qg6 Ke5 78.Qg7 Kf5 79.Qf8 Ke5 80.Qc5 Kf6 81.Qd4 Kf5 82.Qc5 Kf6 83.Qd4 Kf5 84.Qc5 Kf6 ½–½. Player – REBEL 9.0, 1998.

6.Nf3 Nd7 7.0–0 e6 8.Nd4 Bg6 9.f4 c5 10.Nb3 Ra8 11.c4 Ngf6 12.Nc3 h6 13.d4 Qb6 14.cd5 ed5 15.dc5 Bc5 16.Nc5 Qb2 17.Nd7 Nd7 18.Nd5 0–0 19.Rf2 Qa3 20.f5 Bh7 21.Rb1 Nc5 22.Bc4 Ne4 23.Rf4 Nd6 24.Rb3 Qc5 25.Rc3 Qa5 26.f6 Rfd8 27.Bb3 Ne8 28.Qh5 Bg6 29.Qe5 Kh8 30.fg7 Ng7 31.Ra4 Qa4 32.Ba4 Ra4 33.Ne7 Rd1 34.Kf2 Ra2 35.Kg3 Kh7 36.Ng6 Kg6 37.Rc4 h5 38.Rf4 f5 39.Rd4 Rg1 40.Qd6 Kh7 41.Rd2 Ra6 42.Qd7 Rg6 43.Kh3 Re1 44.Rd3 b6 45.g3 h4 46.Rd6 Re3 47.Kh4 Rd6 48.Qd6 Re4 49.Kh3 b5 50.Kg2 b4 51.h4 Ne6 52.Qd5 Ng7 53.Kf2 Kg6 54.Qb3 Ne6 55.Qa4 Nc5 56.Qc6 Ne6 57.g4 Kf6 58.g5 Ke5 59.Qb5 Kf4 60.Qb7 Kg4 61.g6 Rf4 62.Kg2 Rc4 63.g7 Rc2 64.Kf1 Ng7 65.Qg7 Kh4 66.Qd4 Kg5 67.Qb4 Rh2 68.Qd4 Rh4 69.Qd8 Kg4 70.Kg2 Rh6 71.Qg8 Kh5 72.Kf3 Rg6 73.Qe8 Kg5 74.Qd8 Rf6 75.Ke3 Kg6 76.Qg8 Kh6 77.Kf4 Rb6 78.Kf5 Rb5 79.Kf6 Rb6 80.Ke5 Rb2 81.Kd4 Kh5 82.Kc3 Rf2 83.Qe6 Rf4 84.Kd2 Rf3 85.Qe4 Ra3 86.Kc2 Ra5 87.Kc3 Kg5 88.Kb4 Rf5 89.Qe3 Kf6 90.Kc4 Re5 91.Qh3 Ra5 92.Qd7 Ra2 93.Kd3 Ra3 94.Kd4 Ra1 95.Qd6 Kf5 96.Qd5 Kf6 97.Qe5 Kf7 98.Kc4 Rc1 99.Kd3 Rd1 100.Kc2 Rf1 101.Kd2 Kg6 102.Qe4 Rf5 103.Kd3 Kg5 104.Qg2 Kf6 105.Kd4 Rf4 106.Kc5 Rf5 107.Kd6 Rb5 108.Qf1 Rf5 109.Qd3 Kg5 110.Ke6 Rf8 111.Qg3 Kh6 112.Kd5 Rd8 113.Ke4 Re8 114.Kf5 Rf8 115.Ke6 Kh5 116.Qc3 Kg6 117.Ke7 Rf7 118.Kd6 Rf8 119.Ke6 Re8 120.Kd7 Rf8 121.Qg3 Kh5 122.Kd6 Re8 123.Qf4 Rb8 124.Kc5 Rc8 125.Kb5 Rg8 ½–½. NN – COMP, 10'/game, 1998.

4.e3 e6

5.Nf3 Nf6 6.d4 Bb4 7.c3 Be7 8.Bd3 0–0 9.0–0 d6 10.c4 b6 11.Bc3 Ra8 12.Nbd2 Nbd7 13.Qc2 Ba6 14.Rfe1 c5 15.e4 cd4 16.Nd4 Bb7 17.N4b3 Ne5 18.Be5 de5 19.Rad1 Qd6 20.Nf3 Rfd8 21.Be2 Be4 22.Rd6 Bc2 23.Rb6 e4 24.Nfd4 Bb3 25.Nb3 Ra2 26.Bf1 Rc2 27.Rb7 Rc3 28.Rc1 Rc1 29.Nc1 Bd6 30.h3 g6 31.Rb5 Rb8 32.Rb8 Bb8 33.c5 Ba7 34.c6 Nd5 35.Nb3 h5 36.Na5 e3 37.fe3 Be3 38.Kh1 Bf4 39.Bc4 Ne7 40.Bb5 g5 41.Nb7 g4 42.hg4 hg4 43.Nc5 Bd6 44.Na6 Nd5 45.Kg1 e5 46.Kf2 e4 47.Ke1 Bf4 48.Be2 g3 49.Bc4 Nb6 50.c7?? Bc7–+ 51.Bf7 Kf7 52.Nc7 Kf6 53.Nb5 Nd5 54.Nd4 Nf4 55.Kf1 e3 56.Ne2=+ Nh5 57.Nc3 Ng7 58.Nd5 Kf5 59.Ne3 Ke4 60.Ke2 Ne6 61.Nf1 Nd4 62.Ke1 Kf4 63.Kd2 Nb5 64.Ne3 Nc3 ½–½. Bonetti,Shane – MacChess 5.0, 2000.

5.Nf3 Nf6 6.Be2 Be7 7.0–0 0–0 8.d4 d5 9.c4 Nbd7 10.c5 b6 11.Bc3 Ra7 12.cb6 Qb6 13.a4 Ba6 14.Ba6 Ra6 15.Bd2 c5 16.dc5 Nc5 17.Nc3 Nfe4 18.Ne5 Nc3 19.Bc3 Bf6 20.Rb1 Qa7 21.f4 Ra4 22.Bd4 Ra5 23.Nc6 Bd4 24.Na7 Ra7 25.ed4 Ne4 26.Ra1 Rb7 27.Qc2 g6 28.Rfb1 Rd7 29.Rb6 Kg7 30.g4 Rh8 31.Qc6 Rdd8 32.Rb7 h5 33.Qe6 Rdf8 34.Qe5 Kg8 35.Qd5 Nd2 36.g5 h4 37.h3 Kg7 38.Qe5 Kg8 39.Qe2 f6 40.Qd2 fg5 41.fg5 Rh5 42.d5 Rd8 43.d6 Kf8 44.Qf4 Kg8 45.Qf7 Kh8 46.Qg7 1–0. popovicigelu – pobeditell, kurnik, 2012.

5.f4 Nf6 6.Nf3 Be7 7.Be2 0–0 8.0–0 Ne8 9.Nc3 Bf6 10.Rb1 Bc3 11.Bc3 Ra2 12.Ra1 Ra1 13.Qa1 b5 14.Ba5 Nc7 15.Rb1 Nba6 16.Ne5 Qe7 17.c4 bc4 18.Bc4 Qd6 19.Bc3 f6 20.Ng4 Qc5 21.Bb3 Nd5 22.Bb2 Nf4 23.Ba3= Ne2 24.Kf2 Qf5=+ 25.Ke2 Qg4–+ 26.Kf2 Re8 27.Bd6 Qf5 28.Kg1 Qd3 29.Bf4 Qd2 30.Rd1 Qb4 31.Bc2 Nc5 32.Rb1 Qc4–+ 33.Rc1 Qb4?? 34.Rb1 Qc4?? 35.Rc1 Qb4?? 36.Rb1= ½–½. Meybohm,Dirk – Wenke, 1990.

4.e3 Nf6

5.Nf3 d5 6.c4 Nbd7 7.Bc3 Ra8 8.d4 Ne4 9.cd5 cd5 10.Bd3 e6 11.0–0 Bd6 12.a4 0–0 13.Qc2 f5 14.a5 Nc3 15.Nc3 Ra5 16.Nb5 Be7 (Better is 16...Bb8!?=+) 17.Ra5 Qa5 18.Rc1 Rd8 19.Qb2 b6 20.Ra1 Qb4 21.Qc2 Bf6 22.Qc6 Nf8 23.Qb6 Bd7 24.Rb1 Qe7 25.Nc7 Ng6 26.Bb5 Kf7 27.Ra1 Bb5 28.Nb5+= Rd7 29.Ra6 f4 30.Qc6 fe3 31.fe3 h6 32.Qc2 e5 33.Qf5 ed4 34.ed4 Qe3 35.Kh1 Qc1 36.Ng1 Nf8 37.Nd6 Kg8 38.Qd5 Kh7 39.Ra8 Bd8 40.Qf5 Kg8 41.Nb7 Qg5 42.Qg5 Bg5 43.Nc5 Rd6 44.Nf3 Be3 45.Re8 Bc1 46.Ne5 Rf6 47.g4 Bd2 48.Ne4 Rf1 49.Kg2 Rd1 50.d5 Bb4 51.Nc6 Ba3 52.Ra8 Bc1 53.Ne7 Kf7 +–. orane (1995) – shaunarose, Live Game Caissa's Web, 2004.

5.Nf3 d5 6.c4 Bg4 7.cd5 (7.Bc3 Ra8=) 7...Bf3 (7...Nd5 8.Be2=) 8.Qf3 Qd5 (8...Nd5 9.Be2=) 9.Qd5 (9.Qg3 Qd8=) 9...Nd5 10.Be2 Nb4=+ 11.Na3 Ra3!–/+ 12.Ba3 Nc2 13.Kd1 Na1 14.Kc1 e6 15.Bf8 Kf8 16.Kb2 Ke7 17.Ra1 Rd8 18.d4 Nd7 19.Rb1 Kd6 20.Kc3 Kc7 21.Rd1 Ra8 22.Rd2 Nf6 23.Bf3 g5 24.h3 h5 25.g4 h4 26.e4?? Ra3–+ (27.Kc2 Rf3–+) 0–1. Krickemeyer,Horst – Spaete,Erwin (1715), 12sen.Woerishofen, 1996.

5.Nf3 d5 6.Be2 b5 =.

5.Nf3 d6 6.d4 Bd7 7.Be2 e6 8.0–0 Be7 9.Nbd2 0–0 10.Nb3 Ra8 11.c4 c5 12.a3 Nc6 13.Nfd2 b6 14.Bc3 Qc7 15.Qc2 Rfc8 16.Rfc1 Qd8 17.Bf3 Qc7 18.d5 Ne5 (18...ed5 19.cd5 Nd8 20.Qb2=) 19.de6 (Better is 19.Be5 de5 20.de6 Be6 21.Ba8 Ra8 22.Rd1+/–) 19...Nf3= 20.Nf3 Be6 21.Bb2 d5 22.cd5 Bd5 23.Nbd2 c4 24.Bc3 Ba3 25.Bf6? g6?? 26.Be5 Qd8 27.Rd1 Qe7 28.Rab1 Bb4 29.Ra1?? Bd2 30.Qd2?? Bf3–+ 31.gf3 Qe5 32.Ra8 Qg5 33.Kh1 Ra8 34.Qb4 b5 35.e4 Qf4 36.Qb5?? Qf3 37.Kg1 Qd1 38.Kg2 Qg4 39.Kf1 Ra1 40.Qb1 Rb1# 0–1. Bonetti,Shane – MacChess 5.0, 2000.

5.Nf3 Ne4 6.Nc3 d5 7.Bd3 Bh3?? (better is 7...Nd6+=) 8.gh3+– Ng5 (8...Nc5+–) 9.Ng5 d4 (9...Nd7 10.Qg4 Ne5 11.Qg3 Nd3 12.cd3+–) 10.Nce4 de3 (10...h6 11.Nf3 de3 12.fe3+–) 11.fe3 Qc7 (11...Rf5 12.Bc4 e6 13.Qh5+–) 12.0–0 h6 13.Nf7 Rg8 14.Qg4 Nd7 15.Qg6 Ne5 16.Nfd6 Kd7 17.Nc5! Rc5 (17...Rc5 18.Bf5 Mate attack) 18.Bf5 e6 19.Qe6 Kd8 20.Qe8 1–0. usingprogram (2035) – gruniu, kurnik, 2011.

5.Nf3 e6 6.Be2 Be7 7.0–0 0–0 8.c4 d5 9.Bc3 Ra7 10.Qc2 Na6 11.Bd3 Nb4=+ 12.Bb4 Bb4 13.Nc3 c5 14.cd5 ed5= 15.Bf5 Bf5 16.Qf5 d4 17.Nb5 Ra5=+ 18.a4 de3 19.fe3 h6 20.Ne5 Qe7 21.Nc4 Ra6 22.Rf3 Rd8 23.Rg3? Bd2 24.Qh3 Kh7 25.Qf5 g6 26.Qf2? Bb4?? 27.Rh3 Ne4–+ 28.Qf3? Rf6 29.Qg3 Nd2 30.Qh4 h5 31.Ncd6?? Rdd6 32.Nd6 Qd6 33.Qg5 Qe6 34.Rd1 Bc3 (35.Rh4 Qa6 36.Rh5 gh5 37.Qh5 Kg7 38.Qg5 Rg6–+; better is 34...Rf5 35.Qg3 Qa6 36.Qe1–+) 0–1. FRAYBENTOS (2025) – Eralos (2055), ajedrez.educared.net, 2006.

4.e4 d5

5.ed5 Qd5 6.a3 Bf5 =.

5.ed5 Qd5 6.Nc3 Qe6 7.Nge2 =.

5.e5 d4 6.Nf3 Bg4 7.e6 fe6 8.Be2 Bf3 9.Bf3 =.

5.e5 Nd7 6.e6 fe6 7.Qh5 g6=+ 8.Qg5 Ngf6 9.c4? Bg7 10.Nf3 dc4 11.Bc4?? Rg5 12.Ng5 Nd5 13.Bg7–/+ Rg8 14.Bh6?? N7b6 15.Bb3 Qc7 16.0–0–/+ Nf4 17.g3 Attacking the isolated pawn on e6 17...Ne2–/+ 18.Kg2 Qe5 19.d4? Nd4–+ 20.Re1?? Qe1 21.Nh3 Qe4 22.Kf1 Qe2 23.Kg1 Qh5 24.Be3 Nf3 25.Kg2 Ne1 26.Kf1 Qh3 27.Ke1 Nd5 28.Bd4 Qh2 29.Nd2 Rf8 30.Ne4 e5 31.Be5 Bf5 32.f3 Be4 33.fe4 Rf2 34.Bc4 Qg1 (35.Bf1 Qf1#) 0–1. rabelloenter (1960) – tomassic (1850), net–chess.com, 2006.

5.ed5 cd5

6.Nf3 Nc6 7.a4 Bg4 8.Bb5 e6 9.h3 Bh5 10.0–0 Nf6 11.Bc3 Ra8 12.Re1 Bc5 13.g4 Bg6 14.d4 Bd6 15.Ne5 Be5 16.de5 Ne4 17.Re3 h5 18.f3 Nc3 19.Rc3 Qb6 20.Kg2 hg4 21.fg4 Be4 22.Kf1 0–0 23.Bc6 f6 24.Ke2 fe5 25.Qe1 bc6 26.Nd2 Rf4 27.Qg3 Raf8 28.Raa3 Rf2 29.Kd1 Rg2 30.Qg2 Bg2 31.Kc1 Qf2 32.Nb3 d4 33.Rd3 Be4 34.Rd2 Qe1 35.Kb2 Rf3 36.g5 Rb3 37.Rb3 Qd2 38.Rb8 Kh7 39.g6 Kg6 40.Rb3 Qc2 41.Ka3 c5 42.Rb2 Qc3 43.Ka2 Bd5 44.Kb1 Qe1 45.Kc2 Be4 46.Kb3 Qb4 47.Ka2 Qa4# 0–1. NN – COMP, 1998.

6.Nf3 Nc6 7.a4 Bg4 8.Bb5 e6 9.h3 Bh5 10.0–0 Nf6 11.Bc3 Ra8 12.Re1 Bc5 13.g4 Bg6 14.d4 Bd6 15.Ne5 Be5 16.de5 Ne4 17.Re3 h5 18.f3 Nc3 19.Rc3 Qb6 20.Kg2 hg4 21.fg4 Be4 22.Kf1 0–0 23.Bc6 f6 24.Ke2 fe5 25.Qe1 bc6 26.Nd2 Rf4 27.Qg3 Raf8 28.Raa3 Rf2 29.Kd1 Rg2 30.Qg2 Bg2 31.Kc1 Qf2 32.Nb3 d4 33.Rd3 Be4 34.Rd2 Qe1 35.Kb2 Rf3 36.h4 Rb3 37.Rb3 Qd2 38.Rb8 Kh7 39.g5 Qc2 40.Ka3 Bd5 41.g6 Kh6 42.a5 c5 43.Rb2 Qd3 44.Ka4 Bc6 45.Rb5 Bb5# 0–1. COMP – COMP, 1998.

6.Nf3 Nf6 7.Bc3 Ra8 8.Ne5 e6 9.Bb5 Bd7 10.Nd7 Nbd7 11.0–0 Bd6 12.Bd7 Qd7 13.Bf6 gf6 14.Re1 Qc6 15.Qf3 Be5 16.c3 Qd6 17.h3 Rg8 18.a4 Kf8 19.Qh5 Rg7 20.a5 Qc7 21.Qh4 f5 22.Qb4 Bd6 23.Qb5 Ke7 24.Qd5 Rag8 25.d4 Rg2 26.Qg2 Rg2 27.Kg2 Qc6 28.f3 Bc7 29.Re2 Qd6 30.Kf1 Qg3 31.Nd2 Bf4 32.Rb1 Kf6 33.Rb3 Qh3 34.Ke1 Qg3 35.Kd1 Bd2 36.Kd2 Qf3 37.Re5 h5 38.Rb1 h4 39.Re3 Qd5 40.Ra1 h3 41.Re2 f4 42.Rh2 Kg5 43.Rah1 Kg4 44.Rg1 Kh4 45.Rgh1 Qf3 46.c4 Qe3 47.Kc2 Qd4 48.Rh3 Kg4 49.Rh4 Kf5 50.Kb3 e5 51.Rh7 Ke6 52.R1h6 f6 53.Rh1 f3 54.Rb7 f2 55.a6 Qe4 56.Ra1 Qe1 57.Rb6 Kf5 58.Re1 fe1Q 59.Ka4 Qd1 60.Kb5 Qd7 61.Rc6 e4 62.Kb6 e3 63.a7 Qd8 64.Kb7 e2 65.a8Q Qa8 66.Ka8 e1Q 67.Kb7 Qb4 68.Kc7 Ke5 69.c5 f5 70.Kd7 Qb7 71.Rc7 Qd5 72.Kc8 Qa8 73.Kd7 Kd5 74.Ke7 Qc6 75.Rd7 Qd7 76.Kd7 Kc5 77.Ke6 f4 0–1. E Andersson – Rosner, Tiger–CS 1999.

6.Nf3 Nf6 7.Be2 Nc6 8.0–0 e6 9.a4 Bb4 10.Bb5 0–0 11.c4 Bd7 12.d3 dc4 13.dc4 Qc7 14.Bf6 gf6 15.Nbd2 Rd8 16.Qe2 e5 17.Ne4 Be7 18.Nc3 Be6 19.Rad1 Na7 ½–½. Woischke,Norbert – Rosner,Dirk, CiF, 2000.

6.Nf3 Nf6 7.Be2 Ne4 8.d3+= Nc5 9.d4 Ne4 10.Nbd2 Nc6 11.0–0 Qb6 12.Nb3 Ra4 13.Bd3 Bg4 The pressure on d4 grows 14.c4+= Ng5 15.cd5 Bf3 16.gf3 Nb4 17.Bc1 Nd3 18.Qd3 (< 18.Bg5 Qg6 19.Kh1 Qg5 20.Qd3 Qd5=+) ½–½. Woschkat,Karl_Heinz – Rosner,Dirk, CiF, 2001.

4.Nf3 Na6

5.Bc3 Ra4 +=.

5.c4 Nc5 6.Bc3 Ra6 7.d4 Ne4 8.Bb4 (8.e3 d6=) 8...d5 9.cd5 (9.e3 Rb6 10.a3 Ngf6=) 9...cd5 (9...Qd5 10.Nbd2=) 10.e3 Qb6 11.Bd2 Ra8 12.Nc3 Nc3 13.Bc3 Nf6 14.Bd3 Bg4 15.h3 (15.Rb1 Qc6 16.Bb5 Ra2 17.Bc6 bc6 18.Rb8 Kd7 19.Ne5 Kd6 20.Ng4 Nd7+–) 15...Bf3 (15...Qc6 A) 16.hg4?! Qc3 17.Ke2 A1) < 17...Ng4 18.Qb1+/– (18.Rh7 Rh7 19.Bh7 g6=+); A2) 17...e6=; B) 16.Bb4 e6 17.Bf8 Bf3 B1) 18.Qf3?? Qc3 (18...Rf8 19.0–0+=) 19.Ke2 Qb2 (19...Rf8 20.Rhc1 Ra2 21.Ra2 Qc1 22.Qg3+=) 20.Bc2 Qc2 (20...Rf8 21.Rhc1=+; 20...Kf8 21.Rhc1=) 21.Ke1 Rf8–+; B2) 18.gf3?! Qc3 19.Kf1 Rf8=+; B3) 18.Qd2 Bg2 19.Rc1=+) 16.Qf3+= (16…Ra3 17.Rb1+=). Waibel,Ulrich – Krumm,Heinz, compuserve, 1995.

5.e3 Nc5 6.d4 Na4 7.Qc1 Nb2 8.Qb2 d5 9.c4 e6 10.c5 Nf6 11.Nc3 g6 12.Bd3 Bg7 13.0–0 0–0 14.Ne5 Nd7 Black fights for the Initiative 15.f4 f6 16.Nd7+= Qd7 17.Qb6 Ra3 18.Rfc1 e5= 19.fe5? fe5 20.Qb4 Ra8 21.Na4 Qg4 22.Nb6 Rb8 23.h3?? Qg5–+ 24.Bf1 Bh3 25.Rd1 Rf1! 26.Kf1 Decoy to f1 Qg2 27.Ke1 Rf8 (28.Nd5 Rf1#) 0–1. C_D_B7 – smurilo (1705), chessHere.com, 2006.

4.Nf3 d5

5.Bc3 Ra7 6.Bd4 =.

5.d4 Bf5 6.Nc3 e6 7.e3 Bd6 8.h3 Nf6 9.Bd3 0–0 10.0–0 Nbd7 11.Bf5 ef5 12.Qd2 Ne4 13.Ne4 fe4 14.Ng5? h6–+ 15.Ne4 de4 16.c4 b5 17.c5 Bc7 18.Bc3 Ra4 19.f3 Nf6 20.Rad1 Qd5 21.Rf2 Bg3 22.Rff1 ef3 23.Rf3 Ne4 24.Qd3 Ra3 25.Rc1 b4! (26.Ra1 Nc3–+) 0–1. Shakkimestari – pierre, internet, 2006.

5.d4 Bf5 6.e3!? =.

5.d4 Nf6 6.e3 =.

4.Nf3 f6

5.e3 e5 6.e4 =.

5.e4 e5 +=.

5.e3 b5

6.c4 bc4 7.Bc4 d5 +=.

6.d4 d5 +=.

6.Nh4 Nh6 7.d4 =.

6.Nh4 g6

7.Bc3 Ra4 8.d4 b4 9.Bb2 Qa5 10.c3 e6 11.Bc4 bc3 12.Bc3+= Qh5?? 13.Qh5 gh5+/– 14.Be2 Ke7 15.Bh5 Nh6 16.0–0 Nf5 17.Nf5+– ef5 18.Nd2 Bh6 19.Rfb1 Na6 20.Be2 Nc7 21.Bb4 d6 22.Nc4 Nb5 23.Na5 Bd7 24.Bd1 (24...Rb4 25.Rb4+–) 1–0. Wall,Bill – YoungGut, Internet, 2003.

7.Bc3 Ra4 8.d4 e5!? =+.

7.Bc3 Ra4 8.Nf3 d5 =.

7.Bc3 Ra4 8.Nf5 e5 9.Ng3 d5 =+.

7.d4 d5 =.

7.d4 e6 =.

4.Nf3 Nf6

5.e3 Na6 6.Be2 Nb4 7.Bc3 Ra2=+ 8.Ra2 Na2 9.0–0 Ne4 10.Bb2= Qb6 11.Ba1 Qa5 12.Bd3 Nb4 13.Bc3 Nc3–/+ 14.Nc3 d6 15.Qe2 Bg4 16.h3 Bf3 17.Qf3=+ Nd5 18.Nd5+= cd5 19.Qd5?? Qd5–+ (20.Rb1 e6–+) 0–1. wood – carly, Live Game Caissa's Web, 2005.

5.e3 d5 6.c4 Nbd7 7.Bc3 Ra8 8.d4 Ne4 9.cd5 cd5 10.Bd3 e6 11.0–0 Be7 12.Ne5 Ne5 13.de5 Nc3 14.Nc3 0–0 15.Qc2 Bd7 16.Bh7 Kh8 17.Bd3 g6 18.Bg6?? (Better is 18.Qb2+/–) 18...fg6=+ 19.Qg6 Qe8 20.Qh6 Kg8 21.f4 Qf7 22.Rf3 Qg7?? (Better is 22...Qh7 23.Qh7 Kh7=+) 23.Rg3+– (23...Qg3 24.hg3+–) 1–0. Wall,Bill (2365) – Thrawn, Microsoft Gaming Zone, 1999.

5.e3 d6 6.c4 e5 7.Be2 Be7 8.d4 e4 9.Nfd2 Rg5 10.g3 0–0 11.Nc3 d5 12.h4 Rg6 13.h5 Rg5 14.h6 Na6 (14...g6!?=) 15.hg7+= Rg7 16.cd5 cd5 17.a3 Bg4 18.Rc1 Be2 19.Ne2 Qd7 20.Qb3 b5 21.Nf4 b4 22.Rh6 Rg5 23.a4 Kg7 24.Rh1 Rc8 25.Rc8 Qc8 26.Qd1 Kg8 27.a5 Bd6 28.Nh5 Ne8 29.Rh4 Rg6 30.Nf4 Bf4 31.Rf4 (worse is 31.gf4 Rg1 32.Nf1 Nf6–/+) 31...Ng7 32.Qa4 h6 33.Kd1 Nf5 34.Qb5 Ne7 35.Qa4 Rd6 36.Rh4 Rc6 37.Qb3 Rg6 38.Rf4 Qe8 39.Ke1 f5 40.f3 ef3 41.Kf2 Kh7 42.Nf3 Qg8 43.Qd1 Rg3 44.Qh1 Rg7 45.Rh4 Qe6 46.Rh5 Qc6 47.Ne5 (better is 47.Ke1!?+=) 47...Qc2–/+ 48.Kf3 Ng8 (48...Qb2?? 49.Rh6 Kg8 50.Rh8) 49.Rh2 Qe4 50.Kf2 Qh1 51.Rh1 Nf6 52.Kf3 Ne4 53.Rh2 Nd6 54.Kf4 Rg1 55.Nd3 Nc4 56.Kf5 Ne3 57.Ke6 Rg6 58.Ke7 Nc4 59.Ne5 Rg7 60.Kf6 Rg1 (60...Na5?! 61.Bc1 Rb7 62.Rh6 Kg8 63.Rg6 Kh7 64.Rh6 Kg8 65.Rg6 Kh7 66.Rh6=) 61.Ke6 Nc7 62.Kd7 Rg7 63.Kc6 Na5 64.Kc5 Nb7 65.Kb4 Rg1 66.Bc3 Ne6 67.Bd2 Nd4 68.Bh6 Kg8 69.Rf2 Rb1 70.Kc3 Ne6 71.Nd7 d4 72.Kc4 Ra1 73.Bd2 Nbd8 74.Ne5 Kg7 75.Kd5 Rb1 76.Kc4 Ra1 77.Kd5 Ra4 78.Rf3 Ra6 (78...Ra7!?–/+) 79.Rg3= Kf6 80.Rf3 Kg7 81.Rg3 Kh8 ½–½. Clay56 – PeterRs, ChessWorld.net, 2013.

5.e3 d6 6.d4 =.

3.ba5 d5

4.a3 Nf6 5.Nf3 Ra5 6.e3 e6 =.

4.a4 Nf6 5.Nf3 e6 6.Bc3 Ne4 =+.

4.a6 Na6 5.Nf3 Bg4 6.Ne5 Bf5 =+.

4.Nc3 e5 5.Nb1 Bd6 6.Nf3 Nd7 =+.

4.d4 Qa5 5.Qd2 Nf6 6.Qa5 Ra5 7.Nc3 Bf5–/+ 8.Kd2 Nbd7 9.Nf3 g6 10.e3 Bg7 11.h4 0–0 12.h5 Nh5–/+ 13.Rh5? gh5–+ 14.Nh4 Bg6 15.f4 f5 16.a4 Nf6 17.Bd3 Ne4 18.Ne4 fe4 19.Be2 Rfa8 20.f5 Bf7 21.g4 hg4 22.Bg4 Ra4 23.Rg1 Kf8 24.Ng2 c5 25.c3 cd4 26.cd4 Bh6 27.Nf4 Ra2 28.Kc3 Rc8 29.Kb3 Ra6 30.f6 Rb6 31.Ka2 ef6 32.Bc8 Bg5 33.Ba3= Ke8 34.Bg4 Rc6 35.Kb2 Bf4 36.ef4+= Bg6? 37.Be2?? Kf7=+ 38.Bc5 b6 39.Bb5 Re6 40.Bb4+= e3 41.Bd7 Re4 42.f5 Bh5 43.Be6 Re6 44.fe6 Ke6 45.Rg7 e2 46.Rh7+– Bg4 47.Rb7 f5 48.Rb6 Kf7 49.Kc2 f4 50.Kd2 Bf3 51.Ke1 Bg4 52.Kf2 f3 53.Rd6 (53...Kg7 54.Rd5+–) 1–0. dannyboy238 – WoodPusher83, ChessWorld.net, 2007.

4.Bd4 Ra5 5.Nf3 Ra8 6.e3 f6 =.

4.Nf3 Nd7 5.e3 Ngf6 6.Be2 e6 (6...Qa5=) 7.Bc3 Bd6 8.0–0 0–0 9.d3 e5 10.Nbd2 Qc7 11.h3 (Prevents intrusion on g4) 11...Re8 (Black plans e4) (11...c5 12.Nb3=+) 12.Rb1= e4 (Black gets more space) 13.Nd4 Nc5 14.N4b3 Na4 15.Bf6 (15.Ba1 Bh2 16.Kh1 Be5=) 15...gf6 16.Qe1 Nc3 17.Ra1 Ba3 18.de4 Bb2 19.Rb1 Nb1 20.Qb1 Bc3 (Increasing the pressure on the isolated pawn on a5) 21.ed5 cd5 22.Rd1 Bf5 23.Bb5 Red8 24.Bd3 Bg6 25.Nf3 Bh5 26.Be2 Bb4 (26...Ba5 27.Nbd4=) 27.Nbd4 (27.Nfd4 Be2 28.Ne2 Ba5+=) 27...Bc5 (27...Qa5 28.Qb3=) 28.a6 (28.Qb3 Ra5 29.Nb5 Qb6=) 28...ba6 29.Qb2 Bd4 (Black launches an attack) 30.Rd4 (30.ed4 Re8 31.c4 dc4–/+) 30...Rab8 31.Qc1 Rb6 32.c4 (32.Rd1 Qc5=) 32...Rdb8 33.Bd3 (33.Rd5?? (That pawn is poisoned) 33...Rb1 34.Rd1 Rc1 35.Rc1 Rb2–+) 33...Bg6 34.Bf1 (34.Rd5?? (the pawn of course cannot be captured) 34...Bd3 35.Rd3 Rb1–+) 34...Rb2 (34...Rb1 35.Qc3=+) 35.Rd5= Ra2 36.Qc3 Be4 37.Rd2 Qa5 38.Qa5 Ra5 39.Nd4 Ra1 40.f3 Rbb1 41.fe4 Rf1 42.Kh2 Rac1 43.Nf5 Rfd1 44.Rd1 (Better is 44.Rb2!? is worthy of consideration 44...h5 45.Rb8 Kh7 46.Rb7=) 44...Rd1–/+ 45.c5? (Better is 45.Ne7!? Kg7 46.Nc6–+) 45...Rc1 46.c6 a5 47.c7 (47.Nd4 doesn't improve anything 47...a4 48.Nb5 Rc6–+) 47...Rc7 48.Nh6 Kf8 (48...Kh8 49.Nf5 a4 50.Nd4–+) 49.Kg3 a4 (50.Nf5 a3–+) 0–1. lucya (2095) – gradesaver11 (2125), GameColony.com, 2002.

4.Nf3 e6 5.e3 Nf6 6.Be2 Bd6 7.0–0 Qa5 8.c4 Nbd7 9.d4 dc4 10.Bc4 0–0 11.Nbd2 b5 12.Bd3 Bb7 13.Qc2 c5 14.dc5 Rfc8 15.Nb3 Qa4 16.Bf6 Nf6 17.Nfd4 Bc5 18.Nc5 Qc2 19.Bc2 Rc5 20.Rfb1 Bd5 21.Rb5 Rb5 22.Nb5 Ra2 23.Ra2 Ba2 ½–½. Armstrong,Alan – Rossell,Everest, 1 Senior Chess Tourn, 2000.

4.f4 Nf6 5.Nf3 Qa5 6.e3 Bg4 =.

4.g3 Qa5 5.Bg2 Nf6 6.Nf3 g6 7.0–0 Bg7 8.d3 0–0 9.Nbd2 Nbd7 10.c4 Re8 11.cd5 cd5 12.Nb3 Qd8 13.Ne5 Ng4 14.Ng4 Bb2 15.Rb1 Bg7 (15...Ra2 16.Qd2 Nb6 17.Nc1 Bc1 18.Qa2+–) 16.Bd5 e6 17.Bg2 Ra2 18.Ne3 Nb6 19.Nc5 Nd5 20.Nd5 (worse is 20.Nb7 Bb7 21.Rb7 Nc3–/+) 20...ed5 21.Nb7 Bb7 22.Rb7 Rae2 ½–½. AlexSh – Echtwelzo, playchess.de, 2004.

4.g3 f6 5.f4 Qa5 6.Nf3 Bf5 =.

4.h3 Nf6 5.Nf3 Ra5 6.e3 e6 =.

4.Bc3 d4

5.Bb4 Na6 6.Ba3 =.

5.Bb4 e5 6.Bf8 Kf8 7.c3 Ra5 8.cd4 ed4 9.Nf3 Be6 10.e3 c5 11.a4 Nc6 12.Bb5 Na7 13.Na3 Nb5 14.Nb5 de3 15.fe3 Nf6 16.0–0 Bc4 17.Re1 Kg8 18.Ne5 Bb5 19.ab5 Rb5 20.d4 cd4 21.Qd4 Rd5 22.Qc4?? (better is 22.Qf4=) 22...Re5–+ 23.Red1 Qe8 24.Ra7 Re3 25.h3 Re1 26.Re1 Qe1 27.Kh2 Qe5 28.Kh1 h5 29.Rb7 Qe1 30.Kh2 Ng4 31.Qg4 hg4 32.Rb8 Kh7 33.Rh8 Kh8 34.hg4 Kh7 (34...Kh7 35.g3 Kh6 36.Kg2 Qe4 37.Kf1 Qf3 38.Ke1 Qg3 39.Kd2 Qf4 40.Ke2 Qg4 41.Ke3 g5 42.Kd3 Qf3 43.Kd4 g4 44.Kc5 g3 45.Kd6 g2 46.Kc5 g1Q 47.Kc4 Qe2 48.Kc3 Qc5 49.Kb3 Qec2#) 0–1. typ48 – 1stan1, kurnik, 2012.

5.Bb4 Nf6 6.Nf3= Na6 7.Ba3 Qa5 8.Nd4+= e5 9.Nb3 Qd8 10.Bb2 Bd6= 11.Nc3 Bg4 12.d4 0–0 13.h3 Be6 14.e4 Qb6 15.de5 Be5=+ 16.Bd3 Rfd8 17.Qf3 Qb4 18.0–0–0? Bc3–+ 19.e5 Nd5 20.Qe4 Nc5 21.Qh7 Kf8 22.Bc3 Nc3 23.Qh8 Ke7 24.Qh7 Na2 25.Kb1 Nc3 26.Kc1 Ra1! 27.Kb2 N5a4 28.Ka1 Qa3# 0–1. Mueller,P – Woelfelschneider,Peter, corr ICCF, 1993.

4.c4 e6

5.e3 Nf6 6.Nf3 Ra5 =.

5.Nf3 Nf6 6.e3 Bb4 7.Be2 0–0 8.0–0 dc4 9.Bc4 Nbd7 10.Qc2 Qa5 11.d4 Nb6 12.Nbd2 Nc4 13.Nc4 Qa4 14.Qd3 Ra6 15.Rfc1 Be7 16.Nce5 Nd5 17.Qb3 Nb4 a2 draws heavy fire 18.Qa4 Ra4 19.a3 Nd5 20.h3 Nb6 21.Nd2 Ra8 22.Ne4 Na4 23.Bc3 f6 24.Nd3 Nc3 25.Rc3 Rd8 26.f4 Rd5 27.a4 Rda5 28.Nec5 Bd8 29.Nb2 R5a7= 30.Rac1 Kf8 (30...Bc7 31.g4=) ½–½. Nicholls,Mervyn C (2310) – Barnsley,Anthony R (2440), Pappier mem–B email, 1998.

4.e3 Qa5

5.c4 e6 6.Nf3 Nd7 7.Be2 Ngf6 8.0–0 Bd6 9.d4 Ne4 (9...dc4 10.Bc4 0–0 11.Bd3=) 10.c5 Bb8 11.Qc2 0–0 (11...Qa4 12.Qa4 Ra4 13.Rc1=) 12.Nbd2 (12.Bd3 f5+=) 12...Nd2= 13.Nd2 e5 14.Nb3 (14.e4 ed4 15.ed5 cd5=) 14...Qc7 15.de5 Ne5 16.f4 Ng6 17.Qc3 (17.Bd4 Re8=) 17...f6 18.Nd4 (18.Qc2 Re8 19.Bd4 Qf7=) 18...Re8 (18...Qe7 19.Rfd1=) 19.g3 (19.Bh5!?=) 19...Qe7+= 20.Nc2 (20.Rfd1 Ba7 21.f5 Ne5–/+) 20...Bf5 (20...Ba7 21.Ba3–/+) 21.Bd3 (21.Nd4 Bh3 (worse is 21...Qe3 22.Qe3 Re3 23.Kf2 Re2 24.Ke2+=) 22.Rfd1 Ba7–/+) 21...Be4 (21...Bd3!? 22.Qd3 Qc5–+) 22.Be4–/+ Qe4 23.Rf2 Re7 24.Qd4 Bc7 25.Qe4+= Re4 26.Bd4 Re7 27.Ne1 Ba5 28.Rb2 Be1 29.Re1= Kf7 30.Kf2 f5 31.Ree2 Ke6 32.Rb3 Ra7 33.Reb2 Kf7 34.Rb6 Ke8 35.Kf3 Kd8 36.g4 fg4 37.Kg4 Kc8 38.h4 Nf8 39.Kf3 Ne6 40.R6b3 Nd4 41.ed4 Re4 42.h5 Re7 43.a3 Ra4 44.Rd3 Kd8 45.Re2 Re2 46.Ke2 Ke7 47.Kf3 Kf6 48.Kg4 h6 49.f5 Rc4 50.Kf4 ½–½. Holz auf der Heide,Gerhard (2010) – Partenheimer,Heinz (1735), Essen GER Senior Ch (B), 2005.

5.c4 e6 6.Nf3 Nf6 7.Bf6 gf6 8.cd5 ed5 9.Qc2 Na6 10.Nc3 Nb4 a2 draws heavy fire 11.Qb1 Na6 12.Be2+= Nc5 13.0–0 f5 14.Nd4 Ne4 15.Ne4 de4 16.Nb3 Qc7 17.Qb2 Rg8=+ 18.Qc2 h5 19.Bh5 Rh8–/+ 20.Qd1 Qd6 21.h3 Qh6 22.Be2 Rg8 23.Re1 Qh3 Do you see the mate threat?. Black gets strong play along the open h–file 24.Bf1 Qh6 25.g3 Rh8 26.Bg2 b6 27.Nc1 Ba6 (28.Ne2 Bd3–+) 0–1. Kuni,Richard (1700) – Luzuriaga,Norberto Horacio (1700), TT–02 TSC, 2002.

5.c4 Bf5 6.cd5 Qd5 7.Nc3 Qd8 8.Nf3 e6 9.Bc4 Nf6 10.0–0 b5 11.Be2 Be7 12.d4 (12.d3 Ba3 13.Qb3 Bb2 14.Qb2 0–0= (14...Bd3? 15.Rfd1+–)) 12...h6 (12...b4 13.Nb1=) 13.Bd3 Bd3 (13...b4 14.Ne2=) 14.Qd3+= 0–0 15.Ne5 Bd6 16.f4 Qb6 17.a4+/– b4 18.Nc4 Qc7 19.Ne2 Be7 20.e4 Rd8 21.e5 Ne8 22.f5+– ef5 23.Qf5 Bf8 24.Nf4 Qe7 25.e6 Nd6 26.ef7 Nf7 27.Rae1 Qa7? 28.Ng6 (28...Rd4 29.Bd4 Qd4 30.Rf2+–) 1–0. Kern,Guido – Hansen, corr 3GMM½–09, 1998.

5.c4 Nf6 6.Nc3 e6 7.Nf3 Nbd7 8.Be2 Bd6 9.cd5 ed5 10.0–0 0–0 11.Qc2 Re8 12.a4 Ne4 13.Bd3 Ndf6 14.Nd4 Qc7 15.f4 Qe7 16.Rae1 Bd7 17.Nf3 Nc3 18.Bc3 Ne4 19.Ng5 h6 20.Ne4 de4 21.Bc4 b5 22.ab5 cb5 23.Bb3 Rac8 24.Qb2 Qf8 25.Ra1 b4 26.Bd4 Be6 27.Ra7 Bc5 28.Bc5 Qc5 29.Be6 Qa7 30.Bc8 Rc8 31.Qb4 Qa2 32.Qe4 Qd2 33.Qf3 Rc3 34.Qa8 Kh7 35.Qe4 g6 36.f5 Qe3 37.Qe3 Re3 ½–½. Scholefield – de Coverly, Bucks Lge 1980.

5.c4 Nf6 6.Nf3 Bg4 =.

5.Be2 f6 =.

5.Nf3 b5 =.

5.Nf3 Nf6 6.Nc3 g6 7.Be2 Bg7 8.0–0 0–0 9.a3 Ne4 10.Ne4? Bb2–+ (11.Nc3 Ba1 12.Qa1 Qa3–+; 10...de4?! 11.Bg7 Kg7 12.Nd4=) 0–1. mike62 – Orangattackman, internet, 2005.

5.Nf3 Bg4 6.c4 e6 7.cd5 ed5 8.Be2 Nd7 9.0–0 Ngf6 10.Ne5 Be2 11.Qe2 Nc5 12.Ng4 Ng4 13.Qg4 Nd3 14.Qf5 Qa6 15.Bd4 c5 16.Bc3 Rd8 17.Na3 Rd7 (< 17...Qa3 18.Qd3 Qa6 19.Qc2=) 18.Nc2 c4 19.Rab1 Qe6 (19...Qa2 20.Rb7 Qa4 21.Rb8 Rd8 22.Rd8 Kd8 23.Qd5 Qd7 24.Qc4+–) 20.Qh5 g6 21.Qf3 Rg8 22.Rb5 f5 23.Rfb1 Nc5 24.Qf4 Be7 25.Nd4 Qe4 26.Qe4 de4 (< 26...Ne4 27.Rb7 Bh4 28.g3+/–; < 26...fe4 27.f3=) 27.f3 Kf7 28.fe4 fe4 29.Rf1 Ke8 30.Rb4 Rf8 31.Rfb1 Rf6 32.Rc4 Ra6 33.Nb3 Nd3 34.Re4 Ra2 35.Nc1 Nc1 36.Rc1 Rc7 37.Rf1 (37…g5 38.Rf5+/–) 1–0. Rau,J – Simmelink,JTh, corr Kuhlmann mem, 1999.

5.Nf3 Bg4 6.h3 Bf3 7.Qf3 Nd7 8.Bc3 Qb6 9.a4 Ngf6 10.Qf4 e6 11.Bf6 Nf6 12.Nc3 Qb4 13.Qf3 Qd6 14.Rb1 Qc7 15.Qg3 Qg3 16.fg3 0–0–0 17.Bd3 Kc7 18.g4 h6 19.0–0 Bc5 20.Rb3 b6 21.Kh1 Ra8 22.Re1 e5 23.Rf1 Rhd8 24.Ra1 e4 25.Bf1 d4 26.ed4 Bd4 27.Rd1 Ra5 28.Rdb1 Rd7 29.g3 h5 30.gh5 Bc3 31.dc3 Nh5 32.g4 Ng3 33.Kg2 Nf1 34.Kf1 Ra6 35.Rb4 Re7 36.Re1 e3 37.Ke2 f6 38.Rd1 g5 39.Rf1 Re6 40.Rd4 c5 41.Rd3 Ra4 42.Re3 Rd6 43.Rd3 Re4 44.Kd2 Rde6 45.Rdf3 Re2 46.Kc1 Re1 47.Re1 Re1 48.Kd2 Re6 49.c4 Kd6 50.Rd3 Ke7 51.Rb3 Kf7 52.Rd3 Re8 53.Rb3 Rh8 54.Ke2 Kg6 55.Kd2 Rb8 56.Rd3 Re8 57.Rd6 Rh8 58.Rd3 Kf7 59.Rb3 Rh7 60.Ke2 Kg6 61.Kd2 Rd7 62.Rd3 Ra7 63.Rb3 Rb7 64.Re3 Kf7 65.Rb3 Ke6 66.Re3 Kd6 67.Rf3 Ke5 68.Rf5 Ke6 69.Rf3 Rd7 70.Rd3 Rd4 71.Kc3 Rd3 72.Kd3 f5 73.gf5 Kf5 74.Ke3 Kg6 75.Kf3 Kh5 76.Kg3 Kh6 77.Kf2 Kg7 78.Ke3 Kh6 79.Kf2 Kh7 80.Kf3 Kg6 81.Kg4 Kf6 82.Kf3 Ke5 83.Kg4 Kf6 84.Kf3 Kf5 85.Kg3 Ke5 86.Kg4 Kf6 ½–½. Zarkov 4.2b – Shredder 2.0, 1998.

5.f4 Qb6 6.Qc1 e6 7.Nc3 Nf6 8.Rb1 Qc7=+ 9.Nf3 Nbd7 10.Be2 Bd6 11.0–0 b5 12.a3 e5 13.fe5 Ne5 14.h3 0–0 15.Nd4 Nc4 Increasing the pressure on the isolated pawn on a3 16.Bc4 dc4 17.d3 Re8 18.dc4 bc4 19.Rf3 Bc5 20.a4 Bd7 21.Ra1 Reb8 22.Ba3 Ba3 23.Qa3 c5 24.Nde2 Rb4 The pressure on the isolated pawn grows 25.a5 Qe5 26.Ng3 Bc6 27.e4 Rb7 28.a6 Rba7 29.Re3 Ne8 30.Qa2 Nd6 31.Qa5 f5 32.Qb6 Qd4 33.Nf1 f4 The passed pawn on e4 will become decisive later 34.Rd1 Ra6 Black creates threats along the open a–file 35.Qc7 Rc8 36.Qd6 Qd6 37.Rd6 fe3 38.Ne3 Ra3 39.Nf5 Kf8 40.Nd5 Bd5 41.Rd5 Rc3 42.Nd6 Rd8 43.Rd2 Ra8 44.Nb5 Re3 45.Nd6 c3 46.Rf2 Kg8 47.Rf5 Re2 48.Rc5 Rc2 49.e5 g6 50.e6 Ra1 51.Kh2 Re1 52.Nb5 Ree2 53.Rc3 Rg2 54.Kh1 Rh2 55.Kg1 Rcg2 56.Kf1 Ra2 57.Kg1 Rhb2 (58.Rc8 Kg7–+) 0–1. Dlugolecki,Grzegorz – Luzuriaga,Norberto Horacio, corr or01–015 E–mail, 2002.

5.f4 Nf6 6.Nf3 =.

4.e3 Ra5

5.c4 Nf6 6.Nf3 Bg4 7.Qb3 Bf3 8.gf3 b6 9.Nc3 e6 10.Be2 Nbd7 11.d4 Bd6 12.f4 0–0 13.0–0 Kh8 14.a4 dc4 15.Bc4 Rh5 16.Be2 Rh4 17.Kh1 Ng4 18.Bg4 Rg4 19.Rg1 Qh4 20.Rg4 Qg4 21.Qd1 Qh4 22.Qf3 c5 23.Ne2 c4 24.Ba3 Ba3 25.Ra3 Nf6 26.Kg2 Nd5 27.h3 Rc8 28.Nc3 Nc3 29.Rc3 Qf6 30.Qb7 Qd8 31.Qf7 1–0. marvis (1645) – cintiq12wx (1605), playok.com, 2012.

5.Bd3 c5 6.Nf3 Nf6 7.0–0 Nc6 8.Bc3 Ra8 9.Bb5 Bg4 10.a4 Ne4 11.d3 Nc3 12.Nc3 e6 13.h3 Bh5 14.e4 d4 15.Bc6 bc6 16.Nb1 Bd6 17.Nbd2 Ra6 18.Nb3 Qe7 19.g4 Bg6 20.Qc1 h5 21.g5 h4 22.a5 Bh5 23.Nh2 c4 24.dc4 Be2 25.Re1 Bc4 26.Ng4 e5 27.Kh1 Bb4 28.Nd2 Bb5 29.c4 dc3 30.Nf3 f6 31.Ne3 Qd7 32.Ng4 Qe6 33.gf6 gf6 34.Ng1 Ba5 35.Rd1 c5 36.Qc2 Rh7 37.Ne2 Rd7 38.Nc3 Bc3 39.Qc3 Bd3 40.Ra6 Be4 41.Kh2 Qa6 42.Rd7 Kd7 43.Qc5 Bf3 44.Qf8 Qd6 45.Nf6 Ke6 46.Qd6 Kd6 47.Ng4 Ke6 48.Ne3 Kf6 49.Ng4 Kf5 50.Ne3 Kf4 51.Kg1 Bc6 52.Ng2 Kg5 53.Kh2 Bd7 54.Ne3 Be6 55.Ng2 Bc8 56.Ne3 e4 57.Nd5 Bd7 58.Kg2 Be6 59.Ne3 Kf4 60.Nd1 Ke5 61.Ne3 Bf7 62.Kf1 Be8 63.Ng2 Bd7 64.Ke2 Bh3 65.Nh4 Kd4 66.Nf3 ef3 67.Kf3 Ke5 68.Ke3 Bc8 69.f4 Kf5 70.Kf3 Bb7 71.Ke3 Be4 72.Kd4 Bg2 73.Ke3 Bd5 74.Kd4 Be6 75.Ke3 Bd7 76.Kf3 Bc6 77.Ke3 Bb7 78.Kd4 Ba6 79.Ke3 Bc4 80.Kd4 Bf7 81.Ke3 Bb3 82.Kf3 Ba4 83.Ke3 Bc2 84.Kf3 Be4 85.Ke3 Bc6 86.Kd4 Bd7 87.Ke3 Bb5 88.Kf3 Bf1 89.Ke3 Bh3 90.Kf3 Bg4 91.Ke3 Bh5 92.Kd4 Be8 93.Ke3 Bg6 94.Kf3 Bh5 95.Ke3 Bf7 96.Kf3 Bb3 97.Ke3 Ba4 98.Kf3 Bb5 99.Ke3 Ba6 100.Kf3 Bc4 101.Ke3 Be6 102.Kf3 Bd5 103.Ke3 Bh1 104.Kd4 Ba8 105.Ke3 Bg2 106.Kd4 Bf3 107.Ke3 Ba8 108.Kd4 Be4 109.Kc4 Bc2 110.Kd5 Bd3 111.Kd4 Be2 112.Ke3 Bg4 113.Kd4 Kf4 ½–½. NN – COMP, 1998.

5.Nf3 b5 =.

5.Nf3 Bg4 6.c4 Nf6 7.cd5 Nd5 8.Nc3 Bf3 9.Qf3 Nb4 10.Qe4 e6 11.Be2 Nd7 12.Qb1 e5 13.a3 Na6 14.d4 ed4 15.ed4 Be7 16.0–0 Nc7 17.Rd1 0–0 18.Bc1 Qa8 19.Qb3 Nf6 20.a4 Bd6 21.Bf3 Ne6 22.Rb1 Re8 23.Be3 Nf4 24.Qb7 N4d5 25.Bd2 Ra7 26.Qa8 Rea8 27.Bd5 Nd5 28.Nd5 cd5 29.Rb6 Bc7 30.Rc6 Bd8 31.Ra1 h5 32.Rd6 Ba5 33.Ba5 Ra5 34.f4 Kf8 35.Re1 Re8 36.Re5 g6 37.Rdd5 Re5 38.Re5 Ra4 39.Rd5 Ke7 40.f5 g5 41.h3 h4 42.Kf2 Ra2 43.Kf3 Rd2 ½–½. Coltharp – Smits, email CTON 1996–97.

5.Nf3 Bg4 6.Be2 Nd7 7.0–0 Ngf6 8.h3 (8.Bc3 Ra7=) 8...Bf3 9.Bf3 e5 10.d3 Be7 11.c4 0–0 12.cd5 Nd5 13.Nd2 Ba3 14.Rb1 Bb2 15.Rb2 f5 (15...b6 16.Bd5 Rd5 17.Qf3=+) 16.Qc2 Rc5 17.Qb3 b6 18.Nc4 Kh8 19.a4 b5 20.ab5 Rb5 21.Qa3 Rb2 22.Qb2 Qc7 23.Qa3 ½–½. Woschkat,Karl_Heinz – Parzefall,Jan, compuserve, 1996.

5.f4 Nf6 6.Nf3 Bg4 7.Be2 e6 8.0–0 Bd6 9.Kh1 0–0 10.d3 Bc5 11.Nd4 Be2 12.Qe2 Bb6 13.Nd2 Nbd7 14.e4 White intends f5 14...Qa8 15.a3 Bd4 16.Bd4 Ra3 17.e5 Ne8 18.f5 Ra1 19.Ra1 Qb8 20.Re1 c5=+ 21.Bf2 Qc8 22.Bh4= Nc7 23.Be7 Re8 24.f6 Nb5 25.Qg4 g6 26.Nf3 Nd4 27.Nd4 cd4 28.Qd4 Qc2 29.Qe3 Qc3 30.Bd6 d4 31.Qg3 Ra8 32.h3 b6 33.Kh2 Ra2 34.Rg1 b5 35.Qf4 Qd2 36.Qd4 Qe2 37.Qf4 Qd2 38.Qd2 Rd2 39.Rc1 h5 40.Rc8 Kh7 41.Rd8 Nf6+/– 42.ef6 Rd3 43.Be7 Rd8+= 44.Bd8 g5 45.Kg3 Kg6 46.Kf3 Kf5 47.g4 hg4 48.hg4 Ke5 49.Ke3 b4+= 50.Ba5 Kf6= 51.Bb4 Kg6 ½–½. Bakker,P – Comp Polgar X, AEGON, 1990.

4.e3 Nd7

5.Nf3 Qa5 6.Be2 =.

5.Nf3 Ngf6 6.a6 ba6 7.c4 Rb8 8.Ba3 g6 9.Nd4 Qc7 10.Qa4 Bb7 11.Nc3 c5 12.Nb3 d4 13.Nd5 Nd5 14.cd5 Bd5 15.Nc5 de3 16.fe3 Bc6 17.Na6 Qb7 18.Qa5 Rc8 (18...Bg2?? 19.Bg2 Qb6 20.Qa4+–) 19.Rc1 Bg7 20.Bb5 (Better is 20.Qb4!? 0–0 21.Qb7 Bb7 22.Nc5 Nc5 23.Bc5+/–) 20...0–0= (< 20...Bb5 21.Rc8 Qc8 22.Nc7 Kf8 23.Nb5+/–) 21.Bc6 Rc6 22.Nc5?? (Better is 22.Rc6 Qc6 23.Nc7 Qg2 24.Qd5 Qd5 25.Nd5=) 22...Nc5–+ 23.Rc5 Ra8 (23...Ra8 24.Qb4 Rb6–+; Better is 23...Rc5 24.Qc5 Rc8–+) 0–1. Mielke,Sven (1925) – Deglmann,Ludwig (2325), Wichern op 5th, 1999.

5.Nf3 Ngf6 6.Nc3 e5=+ 7.d3 Qa5–/+ 8.Qd2 b5 9.Ne2 Qd2–/+ 10.Nd2 Bd6 11.e4 0–0 12.Ng3 Nc5 13.Nf5 Bf5–+ 14.ef5 Ra4 15.Be2 Rfa8–+ 16.a3 Ncd7 17.0–0 Ba3 18.Ba3 Ra3 19.Nb3 b4 20.h3 c5 21.c4? bc3 22.Ra3 Ra3 23.Nc1 c2 (24.f4 e4–+; 23...Ra1 24.Re1–+) 0–1. Shakkimestari – pierre, internet, 2006.

5.Nf3 Ngf6 6.Be2 Ra5 7.0–0 Qc7 =.

5.Nf3 Ngf6 6.Be2 e6 7.0–0 Bd6 8.c4 e5 9.Ba3 Ba3 10.Na3 Ra5 11.Qb3 0–0 12.d4 e4 13.Nd2 Qe7 14.Nc2 Re8 15.Qc3 Ra8 16.cd5 Nd5 17.Qb2 Qg5 18.Nb4 N7f6 19.Nd5 Nd5 20.Nc4 Bh3 21.g3 Bf1 22.Bf1 Ra7 23.Ne5 Qd8 24.Bc4 f6 25.Bd5 Qd5 26.Ng4 h5 27.Qb6 Rea8 28.Nf6 gf6 29.Qc7 Ra2 30.Ra2 Ra2 31.Qc8 Kg7 32.Qb7 Kg6 33.Qe7 Ra8 34.h3 Qf5 35.g4 Ra1 36.Kg2 Qf3 37.Kh2 Qf2 0–1. marvis (1740) – haime13 (1845), kurnik, 2012.

5.f4 Qa5 6.Nf3 b5 7.Nc3 Ngf6 8.a4 b4 (< 8...ba4 9.Ra4 (9.Na4?! Qb4 10.Nc3 Ra1 11.Qa1 Qb8=) 9...Qa4 10.Na4 Ra4 11.c4+–) 9.Nb5 Ba6 (9...cb5? 10.ab5 Qa1 11.Ba1+–) 10.Ne5 Qb6 (10...cb5? 11.ab5 Qc7 12.ba6 Ne5 13.fe5+–) 11.a5 Qb7 (12.Nd4 Bf1 13.Rf1 c5=) =. Woschkat,Karl_Heinz – Silies,Juergen, remoteschach.de, 2003.

4.e3 Nf6

5.c4 Ra5 6.Bc3 Ra8 7.Nf3 e6 8.d4 Ne4 9.c5 Be7 10.Bd3 0–0 11.0–0 Nd7 12.Qc2 f5 13.Nbd2 Qc7 14.Nb3 Rf6 15.Rfb1 Rg6 16.a4 Rh6 17.a5 Ndf6 18.h3 Nc3 19.Qc3 Ne4 20.Qb4 Bd8 21.Ne5 Bf6 22.f3 Be5 23.de5 Qe5 24.fe4 fe4 25.Bc2 Qg5 26.Kh2 Qe3 27.Qb6 Qf4 28.Kh1 Rf6 29.a6 Ra6 30.Ra6 ba6 31.Nd4 Rf8 32.Nc6 Bd7 33.Qa6 Qf2 34.Ne7 Kh8 35.Qd6 Qc2 36.Rb8 Qc1 37.Kh2 Bc8 38.Rc8 Rc8 39.Nc8 h5 40.Qf8 Kh7 41.Ne7 Qb2 42.Qg8 Kh6 43.Qe6 Qf6 44.Ng8 Kg5 45.Nf6 gf6 46.Qd5 1–0. fuiste – masmembielaC, www.ajedrez21.com, 2001.

5.c4 Ra5 6.Bf6 ef6 7.a3 Bd6 8.Nf3 0–0 9.Be2 Bg4 10.h3 Bh5 11.cd5 Rd5 12.d4 Nd7 13.Bc4 Nb6 14.Bd5 Nd5 15.0–0 Re8 16.Qb3 Bf3 17.gf3 Qd7 18.Kg2 b5 19.Nc3 Re3 20.fe3 Ne3 21.Kf2 Nf1 22.Rf1 Qh3 23.Ne4 Bf4 24.Qc3 h6 25.Rg1 Kh7 26.Qd3 f5 27.Ng3 g6 28.d5 Qh2 29.Rg2 Bg3 30.Kf1 Qh1 31.Rg1 Qh3 32.Rg2 c5 33.d6 Bd6 34.Qd6 Qf3 35.Kg1 Qe3 36.Kh2 b4 37.ab4 1–0. vihavald (1635) – cintiq12wx (1650), kurnik, 2012.

5.c4 e6 6.Nf3 Nbd7 7.cd5 ed5 (< 7...Ra5 8.de6 fe6 9.d4+/–) 8.Qc2 Ra5 (8...Qa5 9.Be2=) 9.Nc3 (9.Be2 Bd6=) 9...Bd6 10.Be2 0–0 11.0–0 Re8 12.a4 Ne4 13.d3 Ng5 14.Nd4 Nf6 15.f4 Ne6=+ 16.Nf5 Bc7–/+ 17.Bf3 d4 18.Nd4 Nd4 0–1. yUGyOR – luckyTramp, ChessWorld.net, 2002.

5.c4 Bf5 6.Qb3 (6.Bf6 ef6 7.Qb3 Na6=) 6...Qc7 (6...Nbd7 7.Bc3= (7.Qb7? Rb8 8.Qc6 Rb2–+)) 7.cd5 (7.Bf6 ef6 8.cd5 Ra5+= (< 8...Qa5 9.Qb7 Bd6 10.dc6+/–)) 7...Nd5= 8.Nc3 e6 (8...Nf6 9.Nf3=) 9.e4+= Nc3 10.ef5 Nd5 11.fe6 fe6 12.Qh3 (12.Nf3 Ra5 13.Be5 Bd6 14.Bd6 Qd6 15.Qb7 0–0+=) 12...Qf7= 13.Nf3 Nf4 (13...Bc5 14.Qg3+=) 14.Qg4 h5 (14...Nd7 15.Bc3+=) 15.Qg5+/– Bd6 16.g3 (16…Ng6 17.Bd3+/–) 1–0. Roe,Philip Lawrence – Verschueren,Frederic, IECG, 1997.

5.Nf3 Qa5 6.Bc3 Qa4 =.

5.Nf3 Qa5 6.Be2 Bg4 7.0–0 b5 =.

5.Nf3 Qa5 6.Be2 Bg4 7.Bf6 Bf3 8.Bf3 ef6 9.0–0 =.

5.Nf3 Qa5 6.Be2 Bg4 7.Bf6 gf6 8.Nd4 Bd7 9.0–0 e5 10.Nb3 Qc7 11.c4 dc4 12.Bc4 Rg8 (13.d4 Bh3–/+) 0–1. Woschkat,Karl_Heinz (+) – Hanison,Bernard, Match CIF–TSC, 2003.

5.Nf3 Ra5 6.Bc3 Ra7 7.Bd4 =.

5.Nf3 e6 6.c4 (6.Be5 Be7=) 6...Bd6 7.Be2 (7.cd5 ed5 8.Be2 0–0=) 7...0–0 8.0–0 Ra5 (8...dc4 9.Bc4 Ra5 10.d4=) 9.Qc2 (9.Bc3 Ra8=) 9...h6 10.Rc1 Nbd7 11.d4 dc4 12.Qc4 Qc7 13.Nbd2 e5 14.Qc2 ed4 15.Bd4 Ne5 16.Be5 Be5 17.Ne5 Re5 18.Nf3 Bf5 19.Bd3 Bd3 20.Qd3 Ra5 21.Qb3 (21.Rd1 Rfa8 22.Qc2 b5=) ½–½. Woschkat,Karl_Heinz – Beutel,Heinrich, compuserve, 1996.

5.Nf3 Bf5 6.d4 (6.Nd4 Bg6=) 6...e6 (6...Qa5 7.Nbd2=+) 7.Nbd2 Qa5 8.c4 (8.Nh4 Bg6=+) 8...Nbd7 9.Be2 dc4=+ 10.Bc4 b5 11.0–0? bc4–+ 12.Nc4 Qb5 13.Qb3 Be7 14.Rfc1 0–0 15.Nce5 Qb3 16.ab3 c5 17.Nd7 Nd7 18.dc5 Nc5 19.b4? Nd3 20.Ra8 Ra8 (21.Ra1 Ra1 (21...Nb2? 22.Ra8 Bf8 23.Ne5+–) 22.Ba1 Bb4–+; 20...Nb2?! 21.Rf8 Bf8 22.b5+=) 0–1. Davis,David – Pennachin,Cassio, IECC, 1997.

5.Nf3 Bg4 6.c4 e6 7.Qb3 Nbd7 8.Bc3 Qc8 9.d4 Bd6 10.Nbd2 Bf3 11.Nf3 Ne4 12.Nd2 Nc3 13.Qc3 0–0 14.Bd3 Qc7 15.Qc2 g6 16.c5 Be7 17.Nb3 e5 18.0–0 Rfe8 19.f4 ed4 20.ed4 f5 21.g3 Nf6 22.Rfe1 Ne4 23.Qb2 Bf6 24.Rab1 h5 25.Re2 h4 26.Kg2 Qg7 27.Rf1 Re7 28.Be4 de4 29.Qc3 Rd7 30.Rd1 g5 31.fg5 Qg5 32.Rf1 hg3 33.Qg3 Rg7 34.Qg5 Rg5 35.Kf2 Rh5 36.Ke1 Kf7 37.Rg1 Rd8 38.Rgg2 Rh7 39.Kf1 Rh4 40.Ke1 Re8 41.Rb2 f4 42.Nd2 Re7 43.Nc4 Bd4 44.Nd6 Kf6 (45.Rb7 Rb7 46.Nb7 f3–+) 0–1. Woschkat,Karl_Heinz – Markus,Roland, E–7–017 CiF, 1999.

5.Nf3 Bg4 6.Be2 Nbd7 (6...e6 7.0–0=) 7.0–0 (7.a6 ba6 8.Bf6 Nf6=) 7...Qa5 8.Nd4 (8.Ne5 Be2 9.Qe2 e6=) 8...Be2=+ 9.Qe2 (9.Ne2 e5=+) 9...e5 10.Nf5 Qb6 11.Bc3=+ Ne4 12.Qg4 g6 13.Ng3 Nc3 14.Nc3 Bg7 15.Nf5 Bf8 16.Ng3 Qc7 17.f4 f5 18.Nf5 gf5–/+ 19.Qh5 Kd8 20.fe5 Ne5 21.Rf5 Ng6 22.Raf1–/+ Bg7?? 23.Rf7+– Qe5 24.R1f5 Qe6 25.Rg7 d4 26.Qg5 Kc8 27.ed4 Qe1 28.Rf1 Qe6 29.Qg3 Ne7 30.Re1 Qf6 31.Rge7 Qd4 32.Kh1 (32…Qd8 33.Rg7+–) 1–0. Lehtonen,Artto – Lehtimaki,Anssi, FIN–chT 1div C, 1997.

5.Bf6 gf6 6.c3 Bf5 7.Nf3 e5 8.Qb3 Qc7 9.c4 Be6 (worse is 9...Qa5 10.Qb7 Rg8 11.Nh4+=) 10.Nc3 dc4 11.Bc4 Bc4 12.Qc4 Nd7 13.0–0 Ra5 14.Rfc1 Bd6 15.e4 Nc5 16.a4 Ne6 17.g3 0–0 18.Ra2 Bc5 19.Kf1 Qd7 20.Qe2 Bd4 21.Nh4 Kh8 22.Qf3 Qe7 23.Nf5 Qd8 24.Qh5 Ng7 25.Qg4 Nf5 26.Qf5 Qe7 27.h4 Qe6 28.Qf3 Rfa8 29.Rac2 Bc3 30.dc3 Ra4 31.Kg2 Kg7 32.h5 h6 33.Rd2 Rg8 34.Rcd1 Re8 35.Rd6 Qe7 36.Rd7 Qf8 37.R1d6 Kg8 38.Qf6 Re4?? 39.Qf5 Rc4 40.Rh6! Qg7 41.Rhd6 Rf4+/– 42.Qd3 e4 43.Qe3 Rf3 44.Qe1 Qc3 45.Qd1 Qc5 46.Qe2 Qh5–+ 47.Rb7?? Rg3!! 48.Kg3 Qe2 49.Rh6 Qf3 50.Kh4 Qf4 51.Kh3 Qh6 52.Kg2 Qg5 53.Kf1 Qg4 54.Rb2 0–1. Heinrichs,R (1795) – Egel,Amos (2000), Sparkassen Open, Nettetal GER, 2010.

4.Nf3 Qa5

5.e3 Nd7 6.Be2 Qb4 7.Qc1 Qg4 8.0–0 e5 9.Re1 (9.c4 Ngf6=) 9…e4=+ (10.Nd4 Qh4=+). Cornacchini,Gabriele – Luzuriaga,Norberto Horacio, TSC, 2002.

5.e3 Bg4 6.Be2 Nd7 7.0–0 Ngf6 8.d3 e6 9.Nbd2 Be7 10.Nb3 Qc7 11.Nfd2 Be2 12.Qe2 0–0 13.e4 ½–½. Nemeth,Laszlo – Bucher,Michael (2180), Cseppko op–A, 2002.

4.Nf3 Ra5

5.e3 b5 6.Be2 =.

5.e3 Nf6 6.c4 Bf5 7.d4 e6 8.Bc3 Ra8 9.Nbd2 Be7 10.Be2 (10.c5 b6 11.cb6 Qb6=) 10...0–0 11.0–0 Nbd7 12.c5 e5 13.de5 Ne4 14.Ne4 Be4 15.Bd4 Nc5 16.Bc5 (16.Nd2 Bf5=+) 16...Bc5 17.Nd4 (17.Nd2!?=+) 17...Qg5–+ (18.Nf3 Bf3 19.Bf3 Qe5–+) 0–1. Smith,Simon – Schmickt,Bernhard, corr or02–024, 2002.

5.e3 Nf6 6.Be2 =.

5.e3 Bg4

6.Bc3 Ra8 =.

6.c4 e6 7.h3 Bf3 8.Qf3 Nd7 9.cd5 cd5 10.Nc3 Ngf6 11.Bb5 Ba3 12.Ba3 Ra3 13.0–0 0–0 14.Rfc1 Qa5 15.Bd7 Nd7 16.Rab1 Ne5 17.Qg3 Nc4 18.Rb7 Nd2 19.Qc7 h6 20.Rc2 Nc4 21.Qa5 Ra5 22.Rc7 Rfa8 ½–½. Benussi,Alberto – Simmelink,Joop Theo, corr Kuhlmann mem, 1999.

6.c4 Nf6 7.Qb3 Nbd7 8.Bf6 Nc5 9.Qb2+= ef6 10.d4 Ne4 11.cd5+= cd5 12.Qb7+/– Bd6 13.Bb5 Bd7 14.Bd3 0–0 15.Be4 de4 16.Qe4 Re8 17.Qc2 Qa8 18.0–0 ½–½. Woschkat,Karl_Heinz (1735) – Van Bommel,Ton (1755), IECG, 1999.

6.c4 Nf6 7.Qb3 Bf3 8.gf3 b6 9.Bf6 ef6 10.cd5 Rd5 11.d4 =.

6.c4 Nf6 7.h3 Bf3 8.Qf3 dc4 9.Bc4 =.

6.Be2 Nd7 7.0–0 e6 8.d4 b5 9.Nbd2= Ngf6 10.h3 Bh5 11.Bd3 Be7 12.e4 0–0 13.e5= Ne8 14.c3 Bg6 15.Bg6= fg6 16.a4 ½–½. Woschkat,Karl_Heinz – Herschel,Rudolf, BdF, 1998.

6.Be2 Nd7 7.0–0 Ngf6 8.d4 (8.Bc3 Ra7=) 8...e6 (8...Qa8 9.a3=) 9.Nbd2 b5 10.h3 Bh5 11.Ne5 Be2 12.Qe2 Qa8 13.e4 Ne5 14.de5 Ne4 15.Ne4 de4 16.Qe4 Bc5 17.Rfd1 0–0 18.a3 Ra4 19.Qf3 Ra6 20.Qd3 Qa7 21.Qf3 Ra4 22.Rab1 h6 23.Rd2 Qa6 24.Rd7 Ba3=+ 25.Ba3 Ra3 26.Rb3 Rb3–/+ (27.cb3 Qa1 28.Rd1 Qe5 29.Qc6 Qe2–/+) 0–1. Woschkat,Karl_Heinz – Borst,John, IECG, 1997.

6.h3 Bf3 7.Qf3 Nd7 =.

6.h3 Bf5 =.

4.Nf3 f6

5.d4 Qa5 6.Bc3 Qa4 =.

5.g3 e5=+ 6.Bg2 Be6 7.0–0 Bd6 8.d3 Ne7 9.Nbd2 Ra5 10.c4 0–0 11.cd5 cd5=+ 12.Nb3 Ra7 13.d4 e4 14.Ne1 Qc7 15.f3 f5 16.e3 Nd7 17.Rf2 Rfa8 18.fe4 fe4–/+ 19.Rc2 Qd8 20.Bc1 Nf5 21.Qe2 Qg5 22.Bh3 Bg3 23.hg3 Qg3 24.Bg2 Rf8 25.a4 Raa8 26.Qf2 Qg6= Threatens Ng3 27.Qd2 Nh4 28.Ba3 Nf3 29.Nf3+= ef3 30.Bf8 Rf8 31.Nc5 Bh3 32.Nd7 Bd7 33.Qc3 Bf5 34.Rf2= Be4 35.Raf1 h5 36.Kh2 Qd6 37.Kg1 Qg3?? 38.Qc5+= Qg5 39.Qd6 Rf5= 40.Re1 Kh7 41.Qh2 Qg4 42.Qh3 Rg5–/+ The mate threat is Qxh3 43.Qg4 Rg4 44.a5 h4 45.Kh2 fg2 46.Rf4 (better is 46.Rf7!?+=). Woschkat,Karl_Heinz – Stock, BdF, 1994.

4.Nf3 Nf6

5.c4 e6 6.e3 Qa5 7.Be2 Na6 (7...dc4 8.Bc4 Nbd7 9.0–0=+) 8.Bc3 Bb4 9.Bb2 Be7 10.0–0 0–0 11.d4 Ne4 12.Nbd2 Nc3 13.Bc3 Qc3 14.Qb3 Qb3 15.ab3 Bd7 16.Ne5 Bc8 17.Nd3 f6 18.b4 Bd7 19.Nc5 Bc5 (19...Nc5 20.bc5 e5 21.cd5 cd5 22.Rfb1+=) 20.bc5+/– Nc7 21.cd5 ed5 22.f3 Nb5 23.Bb5 cb5 24.e4 Bc6 25.Kf2 Ra4 26.Ra4 ba4 27.Ra1 Kf7 28.ed5+– Bd5 29.Ra4 Ke6 30.Ke3 Bc6 31.Ra5 f5 32.Nc4 g5 33.Ra2 Bd5 34.Kd3 1–0. Borrmann,Fritz – Ogden,Kimberly, corr or03–032, 2003.

5.Bd4 Ra5 6.e3 b5 =.

5.Bd4 Ra5 6.e3 Nbd7 =.

5.e3 Nbd7 6.c4 Qa5 7.Qc2 =+.

5.e3 Nbd7 6.c4 e5 7.cd5 cd5 (7...Nd5 8.a6 e4 9.ab7 Bb7 10.Nd4=) 8.Bb5 (8.Ne5!? Qa5 9.Nd7 Bd7 10.Bf6 gf6 11.Nc3+/–) 8...Ra5 9.Bd7 Bd7 10.Be5 Bb4 11.0–0 0–0 12.Qc1 Rc5 13.Qb2 Ba5 14.Bd6 Rb5 15.Qc1 Re8 16.a4 Rb6 17.Bc7 Rb1 18.Bd8 Rc1 19.Bf6?? Rf1–+ 20.Rf1 gf6 21.Rb1 Bc6 22.Nd4 Bd2 23.g3 Bc3 24.Nf5 Bd7 25.Nd6 Re6 26.Nb7 Ba4 27.Nc5 Bc2?? 28.Rb8+– Kg7 29.Ne6 fe6 30.Rc8 d4 31.ed4 Bd4 32.Rc2 e5 33.Kg2 f5 34.h4 h5 35.Rc6 f4? 36.gf4 ef4 37.Kf3 Be5 38.Ke4 Bb8 39.f3 1–0. lidl4 – Dreamcatcher, Live Game Caissa's Web, 2004.

5.e3 Nbd7 6.Be2 Ra5 7.0–0 Qc7 8.c4 e6 9.Qc2 Bd6 10.Bc3+= Ra7 11.Bf6 Nf6 12.c5 Be7 13.d4 b6 14.cb6+/– Qb6 15.Rc1 Rc7 16.Nc3+/– Ba6 17.Rab1 Qa7 18.Ba6 Qa6 19.Rb8 Rc8 20.Qa4+– Rb8?? 21.Qa6 1–0. woschkat (2350) – cromete (2250), net–chess.com, 2002.

5.g3 Qa5 6.Bg2 Qb6 7.Qc1 e6 8.0–0 Bd6 9.d3 Nbd7=+ 10.Nbd2 e5 11.c4 0–0 12.h3 e4 13.Nd4 ed3–/+ 14.ed3 Ne5 15.Qc2 Nd3 16.Bc3 Nb4 17.Qb2 Bc5 18.Rfb1 Qa7–+ 19.N2f3 Nd3 20.Qd2? dc4 21.Qg5 Ne4 22.Qh5 Nc3 23.Ng5 h6 24.Ndf3 Bf2 25.Kh2 Bg3! 26.Kg3 Ne2 27.Kh2 Qb8 (28.Ne5 Qe5 29.Kh1 Nf2#) 0–1. ookii (1790) – halocan (1705), internet, 2007.

5.e3 Qa5

6.Bc3 Qa4 7.Be5 =.

6.c4 Nbd7 7.Be2 =.

6.c4 e6 7.cd5 cd5 8.Be2 Be7 9.0–0 0–0 10.d4 (10.Bc3 Qd8=) 10...Bd7 11.Qb3 Rc8 12.Nc3 Bc6 13.Rfc1 Nbd7 14.Bd3 Bd6 15.a4 Nb6 16.Ba3 Ba3 17.Ra3 Ba4 18.Qa2 Ne4 19.Be4 de4 20.Nd2 Nd5 21.Nde4+= Nc3 22.Rcc3 Rc3 23.Nc3 Rc8 24.Qa1 b5 25.h3 Rc4 26.Ne4+= h6 27.Ra2 Qc7 28.Nc5 e5 29.Rd2 Qa5 30.Qb2 ed4 (30...Rb4 31.Qa2 ed4 32.Rd4 (< 32.ed4 Rd4 33.Nd3 Qc3–+) 32...Rd4 33.ed4=) ½–½. Jacubowski,Andreas – Woschkat,Karl_Heinz, HL015, 1998.

6.c4 e6 7.cd5 Nd5 8.e4 Nf6 9.Bf6 gf6 10.Qb3 =.

6.Be2 b5 7.Bc3 Qa4 8.Bd4 =.

6.Be2 Qb6 7.Bc3 Nbd7 8.0–0 Ne4 9.Bd4 c5 10.Bc3 e5 11.Be5 Ne5 12.Ne5 Bd6 13.Nf3 0–0 14.c4 d4 15.Qc2 Nf6 16.ed4 cd4 17.d3 Re8= 18.Bd1 Bd7 19.Nbd2 Bb4 20.Rb1 Qd6 21.Ng5 Qe7 22.Bf3+= h6 23.Nge4 Ne4 24.Ne4 Bc6 25.Bg4 Ra3= 26.f3 Ba5 27.Qb2 Rd3=+ 28.c5 Rd8 29.Bf5 Qe5–/+ 30.Qc2 Re3 (31.Bh7 Kf8–/+) 0–1. Orr,Michael – Myers,Charlie, WCCF, 2001.

6.Be2 Bg4 7.0–0 Nbd7 8.Ne5 Be2 9.Qe2 Qb6 10.Nd3 e6 11.f4 Be7 12.Qf3 0–0 13.Qg3 c5 14.a4 Ra6 15.Bc3 Rfa8 16.a5 Qd8 17.Ne5 Ne4 18.Qh3 Nc3 19.Nc3 Ne5 20.fe5 Ra5 21.Rab1 Qd7 22.Qf3 Rf8 23.Qg3 b5 24.Ne2 Ra2 25.Rbc1 b4 26.Nf4 Qa4 27.Qg4 g6 (27...Rc2 28.Ne6 g6 29.Nf8 Rc1 30.Rc1 Bf8 31.Qf4+=) 28.d3 c4 29.Rf2 Ra1 30.Rff1 Rc1 31.Rc1 Qa3 32.Rf1 b3 33.cb3 cb3 (33...Qb3 34.Ne6 h5 35.Qg3=) 34.d4 b2 35.Qe2 Qa1 36.Qd1 Qd1 37.Rd1 Ba3 38.Ne2 Rc8 39.Kf2 Rc1 (39...Rc1 40.Rc1 bc1R 41.Nc1 Bc1–+) 0–1. Pintonello – Alvarez Villar (2275), IECG, 2004.

5.e3 e6

6.Be2 Bd6

7.0–0 Qa5 8.Be5 Be5 9.Ne5 Nbd7 10.Nd7 Bd7 11.d4 Qc7 12.c4 0–0 13.Nc3 Ra3 14.Rc1 (14.Qd2!?=) 14...Qa5=+ 15.Qc2 (15.Nb1 Ra2 16.Nc3=+) 15...dc4 (Better is 15...b5–/+) 16.Bc4= Nd5 17.Nb1 Nb4 18.Qb2+/– Ra2 19.Ba2+– Na2 20.Rc2 Nb4 21.Rc4 Nd5 22.Qb7 Bc8? 23.Qc6 Ba6 24.Ra4 Qa4 25.Qa4 Bf1 26.Kf1 Rc8 27.Qd7 Rc1 28.Ke2 g6 29.Nd2 Rc2 30.f4 Kg7 31.h3 Nb6 32.Qb5 Nd5 33.Qb8 Nf6 34.Qb3 Rc7 35.e4 Nh5 36.g3 Rd7 37.Qb5 Rc7 38.Qe5. b4_player (2180) – NN, GameColony.com, 2002.

7.0–0 0–0

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 c5 12.c4=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Qa7 15.Be4 Ne4 16.cd5 cd4 17.Qb4 ed5 18.ed4 Qa4 19.Qb2 Bf5 20.Nd2 Nd2 21.Qd2 Rfc8 22.Qe3 Qc2 23.Qf2 Ra4 24.Nf3 Rca8 25.Qe3 Ra2 26.Ra2 Qa2 27.Re1 Qa4 28.Nd2 Qb4 29.Nb3 h6 30.Nc5? Ra2 31.Qe8 Kh7 32.Qe5 Bb1 33.Rd1 Qb2 34.Qd5 Qf2 35.Kh1 Re2 36.h3 Be4! 37.Qe4 Re4 38.Ne4 Qe2 39.Nc3 Qc2 40.d5 Qc3 41.d6 Qc2 42.Rd4 Qc1 43.Kh2 Qe3 44.Rb4 b6 45.d7 Qd2 46.Kg3 Qd7 47.Rb6 Qd3 48.Kh2 Qd4 49.Rb2 Qb2 0–1. b4_player (2175) – _Drunken_Master_ (2255), GameColony.com, 2003.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Qa7 15.Be4 Ne4 16.cd5 cd4 17.Qb4 ed5=+ 18.ed4 Qa4 19.Qb2 Bf5 20.Nd2 Nd2 21.Qd2 Rfc8 22.Qe3 Qc2 23.Qf2 Ra4–/+ 24.Nf3 Rca8 25.Qe3 Ra2 26.Ra2 Qa2 27.Re1 Qa4 28.Nd2 Qb5 29.Nf3 Be4 30.Ng5 Re8 31.Ne4 Re4 32.Qc3 Re1 33.Qe1 h6 34.Qe5 Qc4 35.Kf2 b5 36.h4 b4 37.Ke3?? b3 0–1. b4_player (2235) – _Drunken_Master_ (2465), GameColony.com, 2003.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 cd4 15.ed4 dc4 16.Bc4=+.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qb3 Rd8 15.Qc2=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qc2 Qb6 15.Be4 Ne4 16.cd5 ed5 17.dc5 Qc5 18.Qc5 Nc5=.

8.Be5 Be5 9.Ne5 Qa5 10.d4 Nbd7 11.f4 Ne4 12.Bd3 Ndf6 13.c4 c5 14.Qc2 Rd8=.

5.e3 Bg4

6.c4 Qa5 7.Bc3 Qb6 8.Bf6 ef6 9.cd5 Bf3 10.gf3 cd5 11.Nc3 +=.

6.c4 e6 7.Qb3 Nbd7 8.Be2 Bf3 9.Bf3 dc4 10.Qc4= Bd6 11.0–0 0–0 12.d4 Qa5 13.Nc3 Ra7 14.e4 e5 15.d5 Bc5 16.Qb3 Bd4 17.Rfd1 Ra6 18.Rac1 Rb6 19.Qc2 cd5 20.ed5 Rc8 21.Rd3 Qb4 22.Ba1 e4 23.Rd4 Qd4 24.Rd1 Rc3 25.Bc3 Qc5 26.Be4 Ne4 27.Qe4 Qc3 (28.a4 Rb4–+) 0–1. Woschkat,Karl_Heinz (1735) – Gallet,Gilles (1750), IECG, 1999.

6.Be2 e6 7.0–0 Bd6 8.Bc3 0–0 =.

6.Be2 e6 7.0–0 Bd6 8.d3 Qa5 9.Nbd2 Nbd7 10.h3 Bf3 11.Bf3 0–0 12.c4 b5 13.cb5 Qb5 14.Qc2 Rfb8 15.Rfb1 Qa4 16.Nb3 c5 17.Be2 e5 18.Qd1 Rb6 19.Nd2 Rba6 20.Qa4 Ra4 21.a3 Kf8 22.e4 de4 23.de4 Rb8 24.Bd3 Bc7 25.Bc2 Ra7 26.Nc4 Rba8 27.Bc3 (withdraw, 0–1). Chatterjee – Poschmann, email 4AMM–F 1998.

6.Be2 e6 7.0–0 Bd6 8.h3 Bf3 9.Bf3 0–0 10.Bc3 =.

6.Be2 e6 7.0–0 Bd6 8.h3 Bh5 9.d4 Ra5 10.Nbd2 b5 11.a3 0–0 12.Ne5 Be2 13.Qe2 Qe7 Increasing the pressure on the isolated pawn on a3 14.Nb3 Ra8 15.Qe1 Nfd7 16.Qc1 f6 17.Nf3 Nb6 18.Re1 Nc4 19.e4 Ba3 20.Ba3=+ Ra3 21.Nc5 Ra1–/+ 22.Qa1 e5 23.c3 de4 24.Ne4 f5 25.Nc5 e4 26.Qc1 Nd7 27.Nd7 Qd7 28.Nd2 Nd2 29.Qd2 Qd5 30.Qe3 Re8 31.Qf4 c5 32.Qe3 cd4 33.cd4 Rd8 34.Rd1 b4 35.Qd2 Qc4 (35...b3 36.Qb4–/+) ½–½. Tain,Julio Antonio – Labahn,Wolfgang, corr SOK–87–03, 1990.

6.h3 Bf3 7.Qf3 Nbd7 =.

3.ba5 Nf6

4.c4 Na6 5.e3 Qa5 6.Nc3 d6 7.Bd3 Nc5 8.Bc2 Be6 (8...Qb4 9.Qb1 Qc4+=) 9.Qe2? (better is 9.d3!?=) 9...Qb4–/+ 10.Nd1 (10.Bb3 Bf5 11.d4 Nb3 12.ab3 Ra1 13.Ba1 Qb3–/+) 10...Bc4–+ 11.a3 Qb5 (11...Be2?! 12.ab4 Ra1 13.Ne2 Rd1 14.Kd1–/+) 12.Qf3 Bd3 13.Bf6 Bc2 (13...Bc2 14.Ne2 Nd3 15.Kf1 ef6–+; 13...gf6?! 14.Bd3 Nd3 15.Kf1–+; 13...ef6?! 14.Bd3 Nd3 15.Kf1–+) 0–1. onny555 (1810) – gamebiteer (2240), gameknot.com, 2012.

4.c4 d6 5.Nf3 e5 6.g3 Qa5 7.Bg2 Be6 8.Bc3 Qc5 9.d3 Be7 10.0–0 0–0 11.Nbd2 Nbd7 12.a4 Qb6 13.a5 Qc7 ½–½. Kruimer,Wim (1700) – Rosner,Dirk (1700), TSC, 2001.

4.e3 Qa5 5.Nf3 (--> 3.ba5 Qa5 4.Nf3 Nf6 5.e3).

4.e3 Ra5 5.c4 e6 6.Nf3 b6 7.d4 Bb4 8.Nbd2 0–0 9.Bd3 d5 10.0–0 Qc7 11.Nb3 Ra8 12.c5 bc5 13.a3 c4 14.ab4 Ra1 15.Ba1 cd3 16.Qd3 Ba6 17.Qc2 Bf1 18.Kf1 Nbd7 19.Nc5 Ra8 20.Bc3 h6 21.Kg1 Qa7 22.h3 Qa2 23.Bb2 Nc5 24.dc5 Rb8 25.Qc3 Qa4 26.Ba3 Ne4 0–1. Zylla – Sowden, 1995.

4.e3 e6 5.Nf3 Qa5 6.Bf6 gf6 7.Be2 Rg8 8.0–0 Qf5 9.Kh1 b5 10.d4 Qg6 11.Rg1 Bb7 12.Nbd2 Bb4 13.c4 Bc3 14.Rc1 b4 15.Qb3 Ra3 16.Qa3 ba3 17.Rc3 Ke7 18.c5 Ba6 19.Ba6 Na6 20.Ra3 Nb4 21.e4 f5 22.Ne5 Qh6 23.Nf1 f6 24.Rh3 Qg7 25.Nc4 fe4 26.Nfd2 f5 27.Rg3 Qh8 28.Rg8 Qg8 29.a4 Qg4 30.a5 Qe2 31.Rf1 Qd3 32.Rb1 Na6 33.Rd1 Qd4 34.Ne3 f4 35.Nec4 e3 36.fe3 fe3 37.Ne3 Qe3 38.Nf3 Qc5 39.Ra1 d5 40.h4 Kd6 41.Kh2 e5 42.Ra2 h6 43.Nd2 0–1. COMP – COMP, 2001.

4.Nf3 Qa5 (--> 3.ba5 Qa5 4.Nf3 Nf6).

4.Bf6 ef6 5.Nf3 Qa5 6.e3 Na6 7.Ba6 Qa6 8.Qe2 d5 9.Qa6 Ra6 10.0–0 Bb4 11.c3 Bd6 12.d4 Bf5 13.Nbd2 Kd7 14.c4 Rha8 15.cd5 cd5 (15...Ra2?! 16.Ra2 Ra2 17.e4+=) 16.Nb3 b6 17.h3 Ra2 18.Ra2 Ra2 19.g4 Bc2 20.Na1 Bd3 21.Rc1 Rb2 22.Ne1 Bc4 23.Nac2 b5 24.Ra1 b4 25.Ra7 Kc6 26.Rf7 (26.e4 de4 27.Ne3–+) 26...Rc2! 27.Nc2 b3 (27...b3 28.Ra7 bc2–+) 0–1. kaasparov – geodorna (1875), kurnik, 2012.

4.c4 Qa5

5.Qc2 d6 6.Nc3 Na6 7.a3 g6 (7...e5 8.Nf3+=) 8.Nf3 Bg7 9.e3 Nc5 10.Be2 0–0 11.0–0 e5 12.e4 Ne6 13.Rfd1 Qa7 14.h3 Nh5 15.d3 Nef4 16.Bf1 Ng3 17.Kh2 (17.Bc1!? Nf1 18.Rf1=) 17...Nf1+= 18.Rf1 f5 19.g3? (better is 19.Rab1+=) 19...Nh3!–+ 20.Kg2 (20.Kh3 fe4 Double attack) 20...f4 21.Rh1 (21.Qb3 Rf6 22.Ne2 Be6–+) 21...fg3 22.fg3 Bg4 23.Raf1?? (23.Rhf1–+) 23...Bf3 (better is 23...Rf3 24.c5 Raf8 25.Rf3 Bf3 26.Kh3 Bh1 27.Qd1–+) 24.Rf3 Rf3 25.Rh3 Raf8 26.Nd1 Rf1 27.Rh1 (27.d4 ed4 28.Qe2–+) 27...Rh1 28.Kh1 Rf1 (28...Rf1 29.Kg2 Qg1 30.Kh3 Qh1 31.Qh2 Qf3–+) 0–1. Holz auf der Heide,Gerhard (1965) – Just,Joachim (2115), Leipzig VfB op, 2007.

5.e3 d6 6.Nf3 Nbd7 7.Be2 g6 (7...e5 8.0–0=) 8.0–0 Bg7 9.d4 0–0 10.Nbd2 Nb6 11.Qb3 Na4 12.Rfb1 Ra6 (better is 12...c5=) 13.Ba3?? (better is 13.c5 b5 14.cb6 Rb6 15.Qa3=) 13...Nc3–/+ 14.Bb4 Ne2 15.Kf1 Nd4! 16.Ba5 Nb3–+ 17.ab3 Bf5 18.Rc1 Ne4 19.Ne4 Ba1 20.Ra1 Be4 21.Bc3 Ra1 22.Ba1 Ra8 23.Bc3 Bf3 24.gf3 Ra3 0–1. carocan (1720) – aaddyyss, kurnik, 2012.

4.c4 d5

5.e3 Ra5 6.Bc3 Ra7 7.Bd4 b6 8.Nf3 e6 9.Be2 Bd6 10.0–0 Nbd7 11.cd5 ed5 12.Bb2 0–0 13.Nd4 Qc7 14.f4 Nc5 15.Nc3 Ra5 16.Qc2 b5 17.Nb3= Nb3 18.ab3 Ra1 19.Ra1 Re8 20.Bd3 Qb6 21.Ne2 Ne4 22.Ng3 Bf4 23.Be4 de4=+ 24.Ne4 Be3–/+ (25.Kh1 Bf4–/+) 0–1. Roggensack Hanspach – Pommerel,Wim, corr SOK–91–73, 1991.

5.e3 Ra5 6.Be2 dc4 7.Bc4 Nbd7 8.Nf3 Nb6 9.Bb3 Bg4 10.d4 e6 11.0–0 Ne4 12.h3 Bh5 13.Qe1 Na4 14.Nfd2 Nb2 15.Ne4 Nd3 16.Qd2 Nb4 17.Nbc3 Be7 18.a3 Nd5 19.Na4 Qc7 20.Qb2 0–0 21.Nac3 Rfa8 22.a4 Bg6 23.Nd2 Nc3 24.Qc3 b5 25.Ra2 ba4 26.Rfa1 a3 27.Bd1 Rb5 28.Nc4 Rb1 29.Na3 Ra1 30.Ra1 Qa5 31.Qa5 Ra5 32.Nc2 Bc2 33.Ra5 Bd1 34.Ra6 f5 35.Rc6 Kf7 36.f3 Bb3 37.Kf2 Bd5 38.Rc7 Kf6 39.Ra7 h6 ½–½. Fritz,Harry – Pommerel,Wim, corr 3GMM–F 2000–01.

4.e3 d5

5.c4 Ra5 6.cd5 cd5 7.Nc3 Nc6 8.a4 Bf5 9.Nf3 e6 10.Nb5 Be7 11.Nfd4 Bg6 12.Bc3 Ra8 13.Nc6 bc6 14.Nd4 Qc8 15.Nc6 Bd6 16.Ne5 0–0 17.Bb5 Qc7 18.Nf3 Ne4 19.Bb2 Nc5 20.0–0 Nd3 21.Bc3 Qa7 22.Ne1 Ne5 23.d3 Rfc8 24.Qd2 Ng4 25.h3 Nh6 26.Nf3 Bh5 27.Ne5 Qc7 28.d4 Qc3 29.Qc3 Rc3 30.Rfd1 Be5 31.Rdc1 Rc1 32.Rc1 Bf6 33.Bc6 Rf8 34.a5 Bd8 35.a6 Bb6 36.Rb1 Rb8 37.Rb6 Rb6 38.a7 Rb1 39.Kh2 Ra1 40.a8Q Ra8 41.Ba8 Bg6 42.g4 Bd3 43.Bd5 1–0. typ48 – tellmesomethi, playok.com, 2012.

5.Nf3 Nbd7 6.a6 ba6 7.c4 e6 8.Nc3 Rb8 9.Rb1 Bd6 10.Be2 0–0 11.0–0 e5 12.d4 e4 13.c5?? (Better is 13.Nd2=) 13...ef3–+ (14.Bf3 Bc7–+) 0–1. tycho – Goofy, playchess.de, 2004.

4.Nf3 d5

5.c4 Qa5 6.cd5 cd5 7.e3 Nc6 8.Be2 e6 9.Bf6 gf6 10.0–0 Bb4 11.Ne1 f5 12.a3 Rg8 13.d3 Bd7 14.Nc2 Bd6 15.Ne1 d4 16.Nf3 Qa7 17.Qc1 Bc5 18.ed4 Nd4 19.Bd1 Bc6 20.Ne1 Rg6 21.Qf4 Qb6 22.Qd2 Bg2 23.Ng2 Qc6 24.Bg4 Rg4 25.f3 Nf3 26.Kh1 Nd2 27.Rf3 Qf3 28.Nd2 Qg2# 0–1. EnginMax20 – Gromit300, 2001.

5.e3 Qa5 6.Bc3 Qb6 7.Be2 Bf5 (7...Bg4 8.0–0=) 8.0–0 (8.d3 e6=) 8...Nbd7 9.Nd4 Bg6 10.f4 (10.Nf3 e6=) 10...e5 (10...e6 11.a4=) 11.fe5 Ne5 12.Nf5 Bf5 (12...Qc7 13.Bd4=) 13.Be5 Be6 14.Bf6 gf6 15.Kh1 (15.Rf6? Bg7 16.Re6 fe6–+) 15...Bd6 16.d4 Ke7 17.Bd3+= Qb2 18.Nd2 Ra2 19.Rb1–/+ Qa3 20.Rb7 Bd7?? 21.Qf3+– f5 22.Qf5 1–0. kamret (2120) – CapitanPiluso (1725), GameColony.com, 2002.

5.e3 Ra5 6.Be2 =.

5.e3 Nbd7 6.Bc3 Ne4 7.Bd3 Nc3 8.Nc3 e5 9.e4 d4 10.Ne2 Ra5 11.0–0 g5 12.Ng3 h5 13.Nf5 Ra3 14.Qc1 g4 15.N3h4 Qa5 16.f4 gf3 17.Nf3 b5 18.Ng5 Ra2 19.Ra2 Qa2 20.Nf7 Qf7 21.Nd6 Bd6 22.Rf7 Kf7 23.c3 Nc5 24.Bb1 dc3 25.Qc3 Be6 26.Qa5 Kf6 27.h3 Nb3 28.Qc3 Nd4 29.Qa5 Bc5 30.Kh2 Rb8 31.Qc7 Rh8 32.Qb7 h4 33.Qc7 b4 34.Bd3 b3 35.Qb7 Ba3 36.Qb6 Bd6 37.Bb1 Rb8 38.Qa7 Rh8 39.Qb7 Bc4 40.d3 Be6 41.Qa7 Rb8 42.Qh7 Rg8 43.Qh4 Kf7 44.Qf6 1–0. lllllll21 – shogunel, kurnik, 2012.

5.e3 e6 6.Be2 Nbd7 7.0–0 Qa5 8.d4 Bd6 9.c4 0–0 10.c5 Bc7 11.Nbd2 e5 12.Ne5 Ne5 13.de5 Nd7 14.Nb3 Qa7 15.f4 Nc5 16.Bd4 Bb6 17.Nc5 Bc5 18.f5 Re8 19.Bh5 Bd4 20.Qd4 g6 21.Bg4 Qd4 22.ed4 Ra4 23.fg6 hg6 24.Bc8 Rc8 25.Rfd1 c5 26.dc5 Rc5 27.Rd2 Kf8 28.Rb1 b5 29.Rdb2 Ra5 30.Rf1 d4 31.e6 f5 32.Re1 Ke7 33.Rd2 Rc4 34.Re5 d3 35.Rd3 Rc1 36.Kf2 Ra2 37.Kg3 Rcc2 (38.Rb5 Rg2 39.Kf4 Kf6–+) 0–1. Woschkat,Karl_Heinz (1835) – Mohr,Daniel, VM2001 (VR Gr.2), 2001.

5.e3 Bg4 6.Be2 e6 7.a3 Qa5 8.0–0 Bd6 9.h3 Bf3=+ 10.Bf3 Nbd7 11.d3 Qb6 12.Qc1 0–0 13.Nd2 Ne5 14.Be2 Qc7 15.f4 Ned7 16.c4 Rfe8 17.d4 c5=+ 18.Rd1 Nb6 19.cd5= Nbd5 20.Nc4 Be7 21.a4 cd4 22.Bd4 Bc5 23.a5 Red8 24.Bf3 Bd4 25.Rd4 Rdc8 26.Qb2 b5 27.Qb5 The passed pawn on a5 quickly leads to threats 27...Rab8 28.Nb6 Qc3 29.Rad1 Qe3 30.Kh2 Qa3 31.Qd3 Rc3 32.Qd2 Rf3 33.gf3 Qf3 34.Rd3 Qe4 35.Ra1 Rf8 36.Nd5 Nd5 37.a6 Qc4 38.a7 Ra8 39.Rb1+– Rd8 40.Rb8 Qc7 41.Rdb3 g6 42.Rd8 Qd8 43.Rb8 Kg7 44.Rd8 Kh6 45.a8Q (45...Ne3 46.Rh8 Nf1 47.Kg1 Kg7 48.Qc3 e5 49.Qe5 f6 50.Qf8#) 1–0. Haertig,Manfred – Heiduk,Michael, ESC, 2001.

3.b5 Qb6

4.e3 Qc5 5.Bd4+/– Qd6 6.Nf3 Nf6 7.Nc3 g6? (better is 7...Nd5+/– 8.Nd5 Qd5 9.Ne5+/–; 7...c5 8.Be5 Qb6 9.Na4+/–) 8.Na4+– Bh6 (8...c5 9.Bc5 (9.Nc5?! Bg7+–) 9...Qc7 10.Bd4+–) 9.Be5 Qc5 (9...Qa3 10.Nb6 Bg7 11.Na8 d6+–) 10.Nc5 (10.Nc5 0–0 11.bc6 dc6 12.Rb1+–) 1–0. pierre – sr_abhigyan, internet, 2008.

4.e3 Nf6!?= 5.Nf3 (5.Nc3 d5 6.Na4 Qc7 7.Nf3 Nbd7 8.c4 e5 9.cd5=) 5...d5 6.Be2 Nbd7 7.0–0 cb5 8.Bd4 Qc6 9.Bf6 +=.

4.e4 cb5 5.Nc3 b4 6.Nd5 Qd6 7.Nf3 Nc6 8.Bc4 f6 9.0–0 =.

4.e4 f6 5.Nc3 a4 6.Ba3 d6 7.Bc4 h5 8.Rb1 Qc7 9.Nge2 e5 10.d4 Nd7 11.bc6 bc6 12.d5 Nb6 13.Rb6 Qb6 14.dc6 Ba6 15.Bd5 Rd8 16.Bg8 d5 17.Bf8 Rg8 18.Nd5 Qc6 19.Ba3 Qc4 20.Nec3 Kf7 21.Qh5 g6 22.Qf3 Qc6 23.h4 Bc4 24.Be7 1–0. Cecchelli – Rossini, corr ITA 1980.

4.Nc3 cb5

5.e3 b4 6.Na4 Qc6 7.c3 b5 8.Nf3 ba4 9.Nd4 Qc5 10.Qa4 Ba6 11.Nb3 Qg5 12.cb4 Bf1 13.Kf1 e6 14.Rc1 Ne7 15.b5 Nd5 16.Rc8 Ke7 17.Na5 Nb6 18.Ba3 d6 19.Rc7 Kd8 0–1. varin123 – slihuatamanio, playok.com, 2012.

5.e3 b4 6.Nb5 d6 7.a4 Nf6 8.Nf3 e6 9.Bd4 Qc6 10.Rc1 Na6 11.c4 Nc5 12.Be2 Bd7 13.0–0 Be7 14.d3 Na4 15.Nd2 Nc5 16.Nb3 a4 17.Bc5 dc5 18.Na1 b3 19.Qd2 Qb6 20.d4 0–0 21.Rc3 cd4 22.ed4 Bb4 23.c5 Qa5 24.Rfc1 Bb5 25.Bb5 Qb5 26.Qb2 Bc3 27.Rc3 Nd5 28.Rg3 g6 29.h4 Qc4 30.h5 Nb4 31.Rc3 Qd4 32.Nb3 ab3 33.Qb3 Nd5 34.Rd3 Ra1 35.Kh2 Qh4 36.Rh3 Qf4 37.Rg3 Qf2 38.h6 Qg1 39.Kh3 Qh1 40.Kg4 f5 41.Kf3 Qf1 0–1. captainevans – oldi62, playok.com, 2012.

5.e4 b4 6.Nd5 Qd6 7.Nf3 Nc6 8.Bc4 f6 9.d4 +=.

4.e3 cb5

5.Bd4 Qg6 6.Na3 b4 7.Nb5 Na6 8.Nf3 (8.Nh3 d5 9.Nf4 Qg5=) 8...d6 9.Bb6 Bf5? (better is 9...a4=) 10.Nh4+– (10.Ba5 Bc2 11.Nbd4 Qh5 12.Qc2 Qa5 13.Bb5 Kd8+–) 10...Qf6 11.Nf5 e5 12.Nbd4 Nc5 (12...Be7 13.Qg4 Qg6 14.Bb5 Kf8 15.Qg6 hg6 16.Ne7 Ne7+–) 13.Bb5 Nd7 14.Qf3 (14.Qg4 g6 15.Nh6 Qe7 16.Bd7 Qd7 17.Qd7 Kd7 18.Nf7 Bg7+–). Schuehler,Ernst – Sterle,Vincent, corr, 1982.

5.Bd4 Qg6 6.Bb5 Qg2 7.Qf3 Qf3 8.Nf3 Nc6 +=.

5.Bd4 Qg6 6.Nc3 Nc6 7.Bc5 b6 8.Ba3 b4 9.Nb5 +=.

5.Bd4 Qg6 6.Nf3 Nc6 7.Bb2 b4 8.a3 e6 9.ab4 Nb4 10.d3 d6 11.g3 Bd7 12.e4 Rc8 13.Na3 Nf6 14.Bg2 h5 (14...Ba4 15.0–0–/+) 15.Nc4 (15.c3!? Nc6 16.Nc4=) 15...b5 16.Ne3 Ng4 17.Rc1 (better is 17.c3!? Nc6 18.Bc1–/+) 17...Ne3–+ 18.fe3 h4! 19.Kf2 (19.Nh4 Rh4; 19.gh4 Qg2 Pinning (19...Qg2 Deflection)) 19...h3 20.Bf1 Rh5 21.Nh4 Qh7 22.Bh3 (22.c3 Na2 23.Rc2 Rh4 24.gh4 Qh4 25.Ke2–+) 22...g5–+ 23.Bg4 Rh6 24.Nf3 (better is 24.Ng2–+) 24...f5 25.ef5 ef5 26.Ng5 (26.h4 fg4 27.Ng5 Qf5 28.Ke2–+) 26...Rh2 27.Rh2 Qh2 (27...Qh2 28.Kf1 fg4–+) 0–1. Van Esbroeck,Dirk – Pietrzak,Wojciech, SF–2009–0–00034, 2009.

5.Bd4 Qc6

6.Na3 b4 7.Nb5 d6 8.c3 e5 9.cb4 Na6 10.Rc1 Qd7 11.Bb6 ab4 12.Nc7 Nc7 13.Rc7 Qc6 14.Rc6 bc6 15.d4 ed4 16.Qc2 Ne7 17.Bd4 c5 18.Bb5 Bd7 19.Bd7 Kd7 20.Ba1 Ra3 21.Qc4 Ke8 22.Qb5 Kd8 23.Qc4 Ke8 24.Qb5 Kd8 25.Qb6 Kd7 26.Qb7 Kd8 27.Nf3 f6 28.0–0 Ra2 29.Rd1 Nc8 30.Qf7 Ra1 31.Ra1 Be7 32.Qg7 Re8 33.Qh7 Nb6 34.Ra7 1–0. Luzuriaga,Norberto Horacio – Herrchen,Ralf, email, 2000.

6.Na3 b4 7.Nc4 a4 +=.

6.Nf3 b4 7.Ne5 Qc7 8.Qh5 g6 9.Qh4 =.

6.Nf3 b4 7.Ne5 Qe6 8.Bc4 (8.a3!? Nc6 9.Nc6 dc6 10.ab4+=) 8...d5= 9.Bb5 Bd7 (9...Nc6 10.c4 bc3 11.Nc3=) 10.Nd7 Nd7 11.a3 (11.c3 Nh6=) 11...ba3 12.Na3 (12.Ra3 Qe4 13.0–0 e5–/+) 12...Ngf6 (12...Nh6 13.0–0=) 13.c4 (13.Qb1 Qg4 14.0–0 Rd8=) 13...Qf5 14.Bb2 (14.cd5 Qd5 15.Qf3 e6+=) 14...e6 (14...e5 15.Bd7 Kd7 16.cd5+=) 15.Qa4 (15.cd5 Qd5 16.Bf6 gf6+=) 15...Kd8–/+ 16.Bd7 (16.Bd7 Nd7 17.cd5 Qd5 18.e4–+). Schuehler,Ernst – Poschmann,Hans, corr, 1981.

6.Nf3 b4 7.Ne5 Qh6 8.a3 Nc6 (8...e6 9.ab4 Bb4 10.Nc3+=) 9.ab4 (9.Nc6 Qc6 10.ab4 b6+=) 9...Ne5 (9...Nd4!? 10.ed4 Qf4=) 10.Be5+/– f6 (10...b6 11.Nc3 Qc6 12.ba5 ba5 13.Be2+/–) 11.Bg3 (11.Bc7 a4+/–) 11...e5 12.Nc3 Bb4 13.Nb5 (13.Nd5 Rb8+/–) 13...Kd8 (13...Kf8 14.c3 Be7 15.Nc7+/–) 14.c3+/– Be7 15.Qb3 Bc5 (better is 15...Qg6!?+/–) 16.Qc4 d6?! (16...b6 17.d4 Be7+–) 17.d4 ed4 (17...Ne7 18.dc5 d5 19.Qb3+–) 18.Bd6 (18.Nd4?! Ne7+/–) 18...Bd6 19.Nd6 Qg6 (19...Qh5 20.Nf7 Ke7 21.Nh8+–) 20.Rd1 (20.Nf7 Ke7 21.Nh8 Qc2 22.Qc5 Ke8 23.Bb5 Bd7 24.Bd7 Kd7 25.Qb5 Kc7+–) 20...Bd7 21.Qd4 Rb8 22.Bc4 Nh6 23.Nf7!! Qf7 24.Bf7 (24.Bf7 Ke7 25.Qe4 Kf8 26.Rd7 g6 27.Bg6 Nf7 28.Rf7 Kg8 29.Qe7 hg6 30.Rg7#) 1–0. Woelfelschneider,Peter – Tschoepe,Frank, 2008.

3.b5 Nf6

4.a4 g6 5.e3 Bg7 6.Nf3 0–0 7.Be2 Qc7 8.c4 d6 9.0–0 Nbd7 10.Nc3 Ne4 11.d4 Nc3 12.Bc3 c5 13.Qb3 cd4 14.Bd4 e5 15.Bb2 Nc5 16.Qc2 Bf5 17.Qc1 Nb3 18.Qd1 Na1 19.Ba1 Rac8 20.Nh4 Be6 21.Bf3 g5 22.Bb7 Qb7 23.Nf3 Bc4 24.Re1 g4 25.Nd2 Be6 26.e4 Rfd8 27.Qe2 Rc2 28.Qd3 Ra2 29.f4 Qa7 30.Kh1 Qf2 31.Rd1 ef4 32.Bg7 Kg7 33.Qc3 Kg8 34.h3 f3 35.gf3 g3 0–1. popovicigelu – expatrie (1820), kurnik, 2012.

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

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

4.e3 d6 5.a4 (5.Nf3 e5=) 5...e5 6.c4 Bf5 7.Nf3 Be7 8.Be2 0–0 9.d3 (9.0–0 cb5 10.ab5 Nbd7=) 9...h6 (9...cb5 10.ab5 Nbd7 11.0–0=) 10.e4 Be6 11.Nbd2 Nbd7 12.d4 Nb6 13.bc6 bc6 14.de5 de5 15.Qc2 Bb4 16.Be5 Bg4 17.0–0+/– c5 18.Rfd1 Qe7 19.Bb2 Rad8 20.e5+/– Nh5 21.Qe4 Bf3 22.Nf3 (22…f5 23.Qe3+/–; 22.Qf3 Bd2 23.Qh5 Qe6+=) 1–0. Erlandsson,Harry – Bivens, corr 3GMM–14, 1995.

4.e3 e6 5.Nf3 d5 6.c4 (6.Be2 cb5 7.Bb5 Bd7=) 6...Bd6 (6...cb5 7.cd5 Nd5 8.Bb5 Bd7 9.Be2=) 7.d4 0–0 (7...dc4 8.Bc4 cb5 9.Bb5 Bd7 10.Bd3=) 8.c5 Be7 9.b6 Nbd7 10.Bd3 e5 11.Nfd2 (worse is 11.de5 Ne4+=) 11...e4 12.Bc2 (12.Be2 Qe8=) 12...Nc5 (12...Qe8 13.0–0 Nb8 14.f3+=) 13.dc5 Bc5 14.Nc3 Bb6 (worse is 14...Qb6 15.Na4 Qa7 16.Nc5 Qc5 17.Bf6 gf6 18.0–0+/–) 15.Rb1 Ng4 16.h3 (16.Na4 Bc7=) 16...Qh4+= 17.0–0 (17.g3 Qh6 18.Qe2 Bc7=) 17...Nf2 18.Rf2 Be3 19.Qe2 Ba7 (19...Qf2 20.Qf2 Bf2 21.Kf2–/+) 20.Nd1+= f5 21.Nb3 Bf2 22.Qf2 Qg5 23.h4 Qh6+= 24.Be5 f4 25.g3 fg3–/+ 26.Qg3 Rf3 27.Qg5 Qg5–+ 28.hg5 Rf5 29.Bd4 Rg5 30.Kh2 a4 31.Nc5 b5 32.Ne3 Rh5 33.Kg2 Rg5?? 34.Kh2 Rh5?? 35.Kg2 Rh6 36.Bd1 Bh3 37.Kg3 Re8 38.Ng4 Bg4 39.Bg4 Rg6 40.Kh4 Re7 (40...Rd6 41.Bd7 Re7 42.Bg4–+) ½–½. Felkel,Siegfried – Woelfelschneider,Peter, TT–18 ETC, 2005.

3.c3 ab4

4.cb4 d6 5.a4 Be6 6.b5 c5 7.e3 Nd7 8.d4 f6 9.Nd2 Nh6 10.Ngf3 g6 11.Bc4 Bc4 12.Nc4 Bg7 13.0–0 0–0 14.Qb3 d5 15.dc5 Nc5 16.Qb4 dc4 17.Qc5 Rc8 18.Qb4 Re8 19.Rfc1 Qd5 20.b6 Nf5 21.a5 e5 22.Rd1 Qc5 23.Qc5 Rc5 24.Bc3 Bf8 25.Rd7 Re7 26.Rad1 Rd7 27.Rd7 Rb5 28.g4 Ne7 29.Rb7 Nd5 30.a6 Nc3 31.a7 Rb1 32.Kg2 Ra1 33.Rb8 Nd5 34.a8Q Ra8 35.Ra8 Nb6 36.Rb8 Nd5 37.Rc8 c3 38.Ne1 Kf7 39.e4 Nf4 40.Kf3 Bb4 41.Ng2 Ne6 42.Ne3 Nd4 43.Kg2 h5 44.gh5 gh5 45.Kf1 Kg6 46.Nd5 c2 47.Nb4 1–0. popovicigelu – vuksan, kurnik, 2012.

4.cb4 e6 5.e3 Nf6 6.Qb3 d5 7.Nf3 Na6 8.b5 Nc5 9.Qc2 Bd6 10.bc6 bc6 11.Ne5 Bd7 12.Nd7 Qd7 (12...Nfd7? 13.Bg7 Rg8 14.Qh7+–; 12...Ncd7?! 13.Qc6 Be7 14.a4=) 13.Bf6 gf6 14.Nc3 Ke7 (14...e5!?=+) 15.a4 Ra5 (15...Kf8 16.a5+=) 16.Be2 Qa7 17.0–0 Na4?? 18.Na4 Ra8 19.Qc6?? Ra4= 20.Ra4 Qa4 21.Qb7 Kf8= 22.Bh5 Be7 23.g4 Qa7 24.Qb1 Kg7 25.f4 Rb8 26.Qc2 Qc5 27.Qd3 Rc8 28.f5 e5 29.Qe2 Qc4 30.Qg2 h6 31.h4 d4 32.g5 hg5 33.hg5 Kh8?? 34.g6 fg6 35.Bg6 Qg8?? 36.Rf3+– de3 37.Qh3 Kg7+/– 38.Rg3 Kf8 39.Bh7 Rc1= 40.Kh2 Qg3?? 41.Qg3+– Ke8 42.Qe3 Bd6 43.Kg2 Rc4 44.Qb6 Rg4 45.Kh3 Rg7 46.Qc6 Ke7 47.Qb7 Kf8 48.Qc8 (48…Ke7 49.Bg6 Rh7 50.Bh7+–) 1–0. cagey – la8pv, Live Game Caissa's Web, 2004.

4.cb4 d5

5.a3 Nf6 =+.

5.d4 e5 6.de5 Bb4 7.Bc3 Bc3–/+ 8.Nc3 Bf5 9.e3 Ra3 10.Rc1 Qa5 11.Nge2 Nd7 12.Nd4?? Rc3–+ 13.Rc3 Qc3 14.Qd2 Qa1 15.Ke2 Bb1 16.f4 Nc5 17.Nc2 Qa2 18.Nd4 Qa3 19.g3 Ne4 20.Qe1 Qb2 21.Kf3 Nf2! 22.Qf2 Be4 (23.Kg4 Qf2–+) 0–1. pinski – Netsurferdude, ChessWorld.net, 2005.

5.e3 Nf6 6.Bf6 ef6 7.a3 (7.b5!?–/+) 7...Bb4!–+ 8.Nc3 (8.ab4 Ra1) 8...Ra3 (< 8...Ba3 9.Qb3+/–) 9.Ra3 Ba3 10.Qb3 Qa5 11.Bd3 Na6 12.Na4 (12.Nge2 b5–+) 12...Bb4 13.Nf3 b5 14.Nb2 Nc5 15.Qd1?? Qa2 16.Qb1 Qb1 17.Bb1 0–0 18.Nd4 Bd7 19.Ke2 Re8 20.Nd3 Nd3 21.Kd3 Bc5 22.Nf3 Bf5 23.Kc3 Bb1 24.Rb1 Rb8 25.Ra1 g6 26.Ra6 Rb6 27.Ra8 Kg7 28.d4 b4 29.Kb3 Bf8 30.h4 h5 31.Ne1 Bd6 32.f4 f5 33.Nf3 Be7 34.Ne5 c5 35.Nd7?? c4–+ 36.Kb2 Rb7 37.Ne5 Bh4 38.Nc6 b3 39.Na5 Bf2 40.Nb7= Be3 41.Rd8 Bd4 42.Ka3 b2 43.Ka2+– c3 44.Kb1 Be3 45.Rd5 Bf4 46.Nc5 Bg5 47.Na4 Bf6 48.Nc5?? f4 49.Nd3 g5 50.Nf2 g4 51.Ne4+/– h4 52.Rf5 f3 53.gf3 g3 54.Rf4 Be5?? 55.Rh4+– f5 56.Ng5?? g2 57.Nh3= Bh2 58.Rc4 g1Q 59.Ng1 Bg1 60.Rc3 Bd4 61.Rd3 Bc3?? 62.Rd6 Bf6 63.Rd5 Kg6 64.Rd3 Kg5 65.Re3 Kf4 66.Rb3 Kg3 67.Rd3 f4 68.Kc2 Kf2 69.Rb3 Ke2 70.Ra3 Bd4 71.Rb3 Bg7 72.Ra3 Be5 73.Rb3 Bg7 ½–½. audrey – binzel, Live Game Caissa's Web, 2004.

5.Nf3 e6 6.Qb3 Bd6?? 7.Bg7+– Qe7 8.Bh8 Bb4 9.Bc3 (9...Bc3 10.Nc3+–; 9.Nc3 Nd7+–) 1–0. Chelly – Seneca, myChess.de, 2005.

5.Nf3 Nf6 6.a3 Bf5 7.d4 (7.e3 e6=) 7...g6 (7...e6 8.e3+=) 8.e3= Bg7 9.Bd3 (9.Be2 Qd7=) 9...Bd3 10.Qd3 0–0 11.0–0 Ne4 12.Nbd2 Nd2 13.Qd2 Nd7 14.a4 (14.b5 Nb6=) 14...Nb6 15.Qc2 Qd6 16.Bc3 Nc4 17.Rfe1 (17.a5 f5=) 17...f6 (17...Ra6 18.e4=) 18.b5 (18.e4 Rfd8=) 18...e5 (18...Rfc8 19.Nd2=) 19.e4 de4 (19...Rfe8 20.bc6 bc6 21.a5=) 20.de5 (20.Qe4 f5 21.Qe2 cb5 22.ab5 Qd5 23.de5 Ra1 24.Ba1 Qb5+=) 20...fe5 21.Qe4 Rf4 22.Qc2 (22.Qe2 cb5 23.ab5 Ra1 24.Ba1 Qc5=) 22...Rc8 (22...cb5 23.ab5 Ra1 24.Ra1=) 23.Rad1 Qe6 24.Qd3 cb5 25.ab5 Qb6 26.Qd5 Kh8 27.Re2 Rf5 28.Qd7 Rcf8 29.Bb4 Ra8 30.Rc2 Rf4 31.Rdc1 Rd8 32.Qh3 Qb5 33.Ng5 h6 34.Ne6 Qb4 35.Nd8 b5 36.Ne6 Rf5 37.Ra2 Qe7 38.Ra8 Kh7 39.Ng7 Qg7 40.Qd3 Rf7 41.Qd8 b4 42.Rb8 Rd7 43.Qe8 Nb2 44.h3 Re7+= 45.Qb5 e4 46.Rcc8 Nd3 47.Qa6 Rf7? 48.Qa8+– Qd4 49.Rh8 Kg7 50.Rbg8 Kf6 51.Qa6 Ke5 52.Re8 Kf4 53.Qg6 Qf2 54.Kh1 Ke3 55.Re4 Kd2 56.Qh6 Kc3 57.Rc8 Kb2 58.Kh2 Rf6 59.Qh5 Qf1 60.Qd5 Rf2 61.Rd4 Kb1 62.Ra8 (62.Ra8 Rd2 63.Qb3 Rb2 64.Qd3 Qd3 65.Rd3+–) 1–0. Rosner,Dirk – van den Berg,T, corr EU/I/1800 (year?).

5.Nf3 Bg4 6.a4 =+.

3.c3 b5

4.e3 ab4 5.cb4 Nf6 6.Qf3 =.

4.Nf3 d5 5.g3 f6 6.Bg2 e5 7.a3 a4 (7...Bd6!?=+) 8.0–0 Bd6 9.d3 Ne7 10.e3 Be6 11.Nbd2 0–0 12.Rc1 Qb6 13.c4 dc4 (13...bc4 14.dc4 Nd7 15.Qc2=) 14.dc4+= bc4 (14...Bc7!?+=) 15.Nc4+/– Bc4 16.Rc4 Rd8 17.Qc2 Ra7 18.Rd1 Na6 19.Nh4 Rc7 (19...Qb5 20.Rc3+/–) 20.Qa4 c5 21.b5 Nb8 22.Qb3 Kh8 23.a4 Nbc6 24.Rcc1 Na5 (24...Ra7 25.Qe6 Nb4 26.Rd2+–) 25.Qe6 c4 (25...Rcd7 26.Bc3+–) 26.Ba3! (26...Rcd7 27.Bb4+–) 1–0. Grund,Karl – de Visser,Arno, corr, 1982.

4.e3 e6

5.a4 ba4 6.Qa4 Qb6 =.

5.Qf3 d5 6.Na3 Qf6 7.Nc2 ab4 8.Qf6 Nf6 9.cb4 Be7 10.d4 0–0 11.Bd3 Nbd7 12.Nf3 Ne4 13.Be4 de4 14.Nd2 f5 15.0–0 Bf6 16.f4 c5? 17.bc5 Nc5 18.Ba3 Nd3 19.Bf8 Kf8 20.Rfb1? (20.a3) 20...Bd7 21.Ne1 (21.g3) 21...Nf4! 22.ef4 Bd4 23.Kf1 b4 24.Nc2 (24.Ke2) 24...Bb5 25.Ke1 Bc3 26.Rb4 Bd3 27.Rb3 Ba1 28.Na1 Ra2 29.Rb8 Ke7 30.Nab3 e3 31.Nf3 Rg2 32.Nbd4 1–0. Diener – A de Visser, corr 1981–83 (Diener).

5.Qf3 Nf6 6.Bb5 ab4 7.cb4 Nd5 8.Bc4 Nb4 9.Qd1 d5 10.a3 dc4 11.ab4 Ra1 12.Ba1 Na6 13.Qa4 Nb4–+ 14.Bc3 Nd3 15.Ke2 Qd5 16.Nf3 Be7 17.Bg7=+ Rg8 18.Nc3 Nc5 19.Nd5= Na4 20.Ne7 Ke7 21.Bd4 c5 22.Be5 f6 23.Ra1 (23…Bd7 24.Bg3=). Diener,Rudolf – Sterle, corr, 1982.

3.c3 Qb6

4.a3 a4 5.e4 e5 6.Bc4 Nf6 7.d3 (7.Qe2!?=) 7...d5+= 8.ed5 cd5 9.Ba2 Be6 10.Nf3 Bd6 11.0–0 h6 (11...0–0 12.c4 dc4 13.dc4=) 12.Nbd2 (12.c4 Bg4+=) 12...0–0 13.d4 (13.c4!? Nbd7 14.cd5 Bd5 15.Bd5 Nd5 16.Re1+=) 13...e4+= 14.Ne5 Qc7 15.f4 (15.c4 dc4 16.Bc4 Bc4 17.Ndc4 Rd8=) 15...Bf5 (15...Re8 16.c4=) 16.Rc1 (16.c4!?=) 16...b5+= 17.Qe2 Qb7 18.g4 Be5?? (18...Be6–/+) 19.gf5?? (better is 19.fe5 Bg4 20.Qg2+/–) 19...Bd6–+ 20.Rf2 Nc6 21.Nf1 Ne7 22.Ne3 Kh8 23.Rcf1 Rg8 24.Kh1 Qd7 25.Rg2 Rab8 26.Qf2 Nf5 27.Nd5+= Nd5 28.Bd5 e3 29.Qe2 Rbe8 30.c4+= bc4 31.Qc4 Re7 32.Bc6+= Qc7 33.d5 Bf4?? 34.Rf4?? Nd6?? 35.Qe2 f6 36.Rfg4 Re4 37.Rg6 Nf5 38.Bf6! Qf4 39.Bg5 hg5 40.Qh5 Nh6 41.Rh6 gh6 42.Qh6 1–0. Urbanaites,Elvira (1860) – Artemenko,Rimma (1685), RUS–ch (Women) 1st League, 2007.

4.Na3 d5 5.Qb3 e6 6.ba5 Qb3 7.ab3 Ra5 8.Nf3 Nd7 9.b4 Ra7 10.e3 Ngf6 11.Be2 Bd6 12.0–0 0–0 13.Nc2 Ra1 14.Ra1 Nb8 15.Ra7 Na6 16.Ba3 b5 17.Nfd4 Bb8 18.Re7 Bd6 19.Ra7 Bb8 20.Re7 Bd7 21.Rd7 Nd7 22.Nc6 Nc7 23.N2d4 Nb6 24.Bb5?? Nb5?? 25.Nb5+= Nc4 26.Bc1 Ne5 27.Nbd4 Nc6 28.Nc6 Bd6 29.Nd4 Rc8 30.Nb3 Kf8 31.h3 Be5 32.Kf1? Bc3!–+ 33.Ba3 Ra8 34.Na5 Bd2 35.Ke2 Bb4?? 36.Bb4+= Ke8 37.Nc6 f6 ½–½. Mair,Bob – Lacroix,Peter, Canada op Edmondton, 2000.

4.Qb3 Qc7 5.e3 d6 6.c4 ab4 7.Qb4 e5 8.Qc3 (8.Nc3 Nf6 9.Nf3 Bf5+=) 8...Na6 9.d4 f6 (9...ed4 10.ed4 Qe7 11.Be2+=) 10.a3 (10.Nd2 Ne7=) 10...c5 (10...ed4 11.ed4 Qe7 12.Be2+=) 11.d5 f5 12.Nd2 (12.Qc2 Qb6=) 12...Nf6 13.Bd3 (13.Ngf3 e4 14.Ng1 Qf7=) 13...g6 (13...Be7 14.Ne2=) 14.Bc2 Bg7 15.Ngf3 0–0 16.0–0 Nb8 (16...Qe7 17.Rab1=) 17.Rfb1 h6 18.Qb3 (18.h3 b6=) 18...Qd8 19.Bc3 Ra6 (19...Nbd7 20.Bd1=) 20.Qb2 Nh5 21.g3 Nf6 (21...Nd7 22.Rf1=) 22.a4 Qe8 23.a5 g5 (23...e4 24.Ba4 Qf7 25.Ne1=) 24.Bd1 Nbd7 25.Ba4 Qh5 ½–½. Cagara,Paulina (1800) – Hanarz,Karolina (1900), Poland–chT2 South U20, 2000.

4.a3 Na6

5.d4 Nf6 6.Nd2 ab4 7.ab4 d5 8.e3 e6 9.Qc2 Qc7 10.Ngf3 Bd6 11.h3 0–0 12.Bd3 b6 13.e4 de4 14.Ne4+= Ne4 15.Be4 f5 16.Bd3 Bb7 17.0–0–0?? c5–/+ 18.dc5 bc5–+ 19.b5 Nb8 20.Kb1 c4 21.Be2 Be4 22.Bd3 cd3 23.Qd2 Bf4 (24.Qe1 d2 25.Qe4 fe4 26.Nd2 Rf5–+) 0–1. Jancso,Z – Pacsika,S, Sarospatak ch, 1992.

5.e4 d5 6.ed5 cd5 7.Ba6 Qa6 8.Qe2 Bf5 9.Qa6 Ra6 10.b5 Re6–+ 11.Kd1 Bd3 12.Nf3 Bb5 13.Nd4 Ba4 14.Kc1 Rg6 15.g3 Nf6 16.d3 Ng4 17.f4? Nf2 18.Rf1 Nd3 19.Kd2 Nb2 20.c4 Nc4 21.Kd3 e5 22.fe5 Ne5 23.Kd2 Bc5 24.Nf5 Rb6 25.Nc3 Rb2 26.Kc1 Nd3# 0–1. rikilatic – mrkt, myChess.de, 2005.

4.a3 ab4

5.cb4 Na6 6.Bc3 e6 7.e3 Bb4?? 8.Bg7+– (8...Be7 9.Bh8+–; 8.ab4?! Nf6+–) 1–0. coloplayah (1980) – tommyleandros, net–chess.com, 2006.

5.cb4 c5 6.Qc2 cb4?? (better is 6...Na6+=) 7.Qc8+– Qd8 8.Qb7 Nc6 9.Qb5 ba3 10.Ba3 (10.Na3?! Rb8=; 10.Ra3?! Rb8 11.Qa4 Rb2+=) 10...Ra5 11.Qb2 Qa8 12.Nf3 e6 13.e3 Ba3 14.Na3 Nf6 15.Bb5 0–0 16.Bc6 dc6 17.0–0 Rb8 18.Qc3 Nd5 19.Qd3 h6 20.Nc2 Rb2 21.Ra5 Qb8 22.g3 Rb3 23.Qc4 Rb1 24.Qc6 Rf1 25.Kf1 Kh7 26.Ra8 Qb1 27.Nce1 g5 28.Qc2 Qc2 29.Nc2 Kg6 30.g4 h5 31.Rg8 Kf6 32.gh5 Ne7 33.Rg5 Nf5 34.e4 Ne7 35.e5 1–0. caliu (1620) – maddoxdb, gameknot.com, 2012.

5.cb4 c5 6.Bc3 Nf6 7.Nf3 d5 8.e3 Bg4 9.h3 Bf3=+ 10.Qf3 d4?? 11.ed4?? (11...cd4 12.Bb2=; better is 11.bc5 Qc7 12.Bb5 Nbd7 13.ed4+–) 1–0. coloplayah (2140) – jerrytong, net–chess.com, 2006.

5.cb4 c5 6.Nc3 e6 (6...cb4 7.Nd5 Qd6 8.Nb4 Nc6=) 7.b5?? (better is 7.Na4 Qa7 8.Nc5+/–) 7...d5+= 8.e3 Nf6 9.Nf3 Bd6 10.Be2 Bd7 11.a4 e5 12.0–0 e4 13.Ne1 Qc7 14.f4 h5 15.d3= g5?? 16.de4 gf4 17.Nd5 Nd5 18.Qd5 Rh6 19.e5 Be7 20.ef4 Be6 21.Qe4 Qb6 22.f5 Bd7 23.e6! fe6 24.f6 Bd6 25.f7 Kf8 26.Bc1 Rh8 27.Qe3 Qd8 28.Qh6!! Rh6 29.Bh6 Ke7 30.Bg5 Kf8 31.Bd8 (31.Bd8 Kg7 32.Ra3+–) 1–0. Akimov,Gennadiy (1955) – Ishpulaeva,Veronika, Dimitrovgrad RUS, Petrosian Mem, 2011.

5.cb4 c5 6.bc5 Qc5 7.Nc3 d5 +=.

5.cb4 d6 6.Nf3 =.

5.e3 bc3 6.Bc3 d5 7.d4 Bf5 8.Nd2 e6 9.Qc1 Nf6 10.f3 Nbd7 11.g4 Bg6 12.Ne2 Bd6 13.g5 Nh5 14.f4 0–0 15.Bh3 Bf5 16.Bf5 ef5 17.Kf2 g6 18.Nf3 f6 19.h4 Qa6 20.Bb4 Bb4 21.ab4 Qd3 22.Qc3 Qc3 23.Nc3 Nb6 24.Nd2 fg5 25.hg5 Ng7 26.Nf3 Nc4 27.b5 Ne6 28.Rhb1 Ra3 29.Ra3 Na3 30.Rb3 Nc4 31.bc6 bc6 32.Ke2 Rf7 33.Rb8 Rf8 34.Rf8 Kf8 35.Ne1 Kg7 36.Nf3 h6 37.gh6 Kh6 38.Nd1 g5 39.fg5 Ng5 40.Nh4 Nd6 41.Nf3 Nf3 42.Kf3 Kg5 43.Nf2 Ne4 44.Nd3 Nd2 45.Ke2 Nb3 46.Nb4 Na5 47.Kf3 f4 48.Nc2 fe3 49.Ke3 Kf5 50.Kd3 Kf4 51.Nb4 Kf5 52.Nc2 Ke6 53.Kc3 Kd6 54.Ne3 c5 55.dc5 Kc5 ½–½. Jalo,Pentti – Launamo,Juha, Helsinki, 1994.

5.cb4 d5

6.Qc2 Nf6 7.Nf3 Nbd7 8.e3 (8.Ra2 Qc7 9.d4 e6 10.b5 c5 11.e3 c4 12.Be2 Bd6 13.Nc3=) 8...e6 9.Be2 (9.Bd3 Bd6 10.0–0 e5 11.Bf5 0–0 12.d3 Qc7 13.Rc1+=) 9...Bd6 10.d4 (10.Bd4 Qc7 11.d3 e5 12.Bb2 0–0 13.Nc3+=) 10...Qc7 (10...0–0 11.Nbd2 Re8 12.0–0 Ra7 13.Ne5=) 11.0–0 e5 (11...0–0 12.Rc1 e5 13.de5=) 12.de5 Ne5 13.Ne5 (13.Nbd2=) 13...Be5 14.Be5 Qe5 15.Nd2 Bf5 16.Bd3 Bd3 17.Qd3 0–0 18.Nf3 Qe4 19.Qc3 ½–½. Kouba,V (1825) – Lochman,Vaclav (2015), 9th Niki Open, 2011.

6.d4 Bf5 7.Nf3 Nd7 8.e3 Nh6 9.Qd2 e6=+ 10.h3 Bd6 11.Nc3 0–0 12.Nh4 e5 13.g4 ed4 14.Nf5 Nf5=+ 15.Nd5 cd5 16.gf5 de3 17.fe3 Bg3 18.Kd1 Ne5?? 19.Bd4 Qd6= 20.Bg2 Nc4=+ 21.Qc3 f6 22.Bc5 Qe5?? 23.Qe5+– Be5 24.Bd5 Kh8 25.Bf8?? Ba1?? 26.Bc4 Rf8+/– 27.Kc2 Rc8 28.Kb3 Be5+/– 29.Rd1 h5 30.e4 (30.Rd7 Rc7 31.Rc7 Bc7+–) ½–½. alaamattar (2205) – rbeckett (2120), net–chess.com, 2005.

6.e3 Nd7 7.Bd4 (7.Nf3!?=) 7...Qc7+= 8.Nf3 e5 9.Bb2 Ngf6 10.Be2 Bd6 11.h3 (11.Nc3 Nb6+=) 11...0–0 12.Qc2 h6 13.0–0 Nb6 14.Nc3 Be6 15.d3 Rfc8 16.Rfc1 Bf5 17.Qd1 (17.Qb3 Qe7+=) 17...Qe7–/+ 18.Qe1 (18.Qb3 e4 19.de4 de4–/+) 18...e4 19.de4 Ne4 (19...de4 20.Nd2–/+) 20.Qf1 (20.Ne4 Be4 21.Qc3 Qf8+=) 20...Nc3 (20...Ng5 21.Ng5 Qg5 22.Rd1–/+) 21.Bc3 Na4 22.Bd4 b6 23.Bd3 Bd3 (23...Be4 24.Ra2–/+) 24.Qd3 c5 25.bc5 (25.Bc3 Qe6+=) 25...bc5–/+ 26.Bc3 Nc3 (26...Qe6 27.Rd1 Ra6 A) 28.Qa6? Bh2 (28...Nc3?! 29.Kf1 Nd1 30.Rd1=) 29.Kh2 Qa6–+; B) 28.Qc2–/+) 27.Rc3 (27.Qc3 Ra4–/+) 27...Be5 (27...Rd8!?–/+) 28.Ne5+= Qe5 29.Rd1 c4 (29...Ra5 30.f4 Qf6 31.Qd2+=) 30.Qc2 (30.Qd4 Qd4 31.Rd4 Ra5=) 30...Rcb8 (30...g6 31.Qd2+=) 31.Rd4 (31.e4 de4 32.Rc4 e3+=) 31...Rb5 32.Qd1 Rba5 (32...Rb2 33.a4+=) 33.f4 (33.Rc1 Rc5 34.a4 Rac8+=) 33...Qe6–/+ 34.Qc1 (34.e4 A) 34...Ra3?! 35.ed5 Qb6 36.Ra3 (36.Rcc4?? Ra1 37.Kh2 Rd1 38.Rd1 Ra2–+) 36...Ra3 37.Kh2=; B) 34...de4 35.Qe2 Qb6 36.Rcc4 f5–/+) 34...f5 35.Kh2 Qe7 (35...Rb8 36.Rd1–/+) 36.Qc2 Qe6 (worse is 36...Ra3 37.Rd5 Rc3 38.Qc3+=) ½–½. Veer,Willem (1940) – Ramos Dos,Rosangela, National Championship, 2010.

6.e3 Bf5

7.Nc3 e5=+ 8.Na4 Qc7 =+.

7.Nc3 e5 8.d4 e4 9.h4 Nf6 10.Be2 h5 11.Nh3 Bd6 12.Ng5 Nbd7 13.0–0 Qc7 14.f4 Ng4 15.Bg4 hg4 16.Rc1 Nb6 17.Qb3 Rh4 18.g3 Rh5 19.a4 Be6 20.Nce4 Ra4 21.Rc5 Be7 22.Ra5 Rb4 23.Qa2 Bg5 24.Ng5 Rg5 25.Bc3 Rc4 26.Qb3 Bf5 27.Ra7 Rh5 28.Rf2 Rh3 29.Rh2 Rg3 30.Kf2 Rf3 31.Ke2 Rh3 32.Rh3 gh3 33.Ba5 Rc2 34.Kf3 h2 35.Qc2 Bc2 36.Kg2 Be4 37.Kh2 g5 38.Kg3 gf4 39.ef4 Kd7 0–1. Roell,U – Simon,T, Dortmund, 1994.

7.Nc3 e5 8.Nf3 Bd6 9.d4 =+.

7.Nc3 Nf6 8.h4 Nbd7 9.d4 Qc7 10.Rc1 e5 11.h5 e4 12.Be2 Nb6 13.g4 Nc4 14.Bc4 Ng4 15.Nd5 Qd8 16.Nf4 Be7 17.Qb3 0–0 18.d5 b5 19.Be2 cd5 20.Qd5 1–0. Roell,U – Lasberg,R, Dortmund, 1994.

7.Bd4 Qd8 =.

5.cb4 Nf6

6.e3 d5 7.d4 Bf5 8.Nf3 Ne4 9.Bd3 Nd7 10.Nbd2?? (10.Nh4 Bg6+=) 10...Nd2?? (better is 10...Nf2!? 11.Kf2 Bd3–+) 11.Qd2 Bd3 12.Qd3 e6 13.0–0 Bd6 14.Ng5 h6 15.Nf3 Qc7 16.Rac1 Qb8 17.Rfe1 Nf6 18.h3 Ne4 19.Nd2 Bh2 20.Kf1 Nd2 21.Qd2 Bd6 22.Kg1 ½–½. Jokmin,Alex – Feng,Jason, SN–2009–0–00200, 2009.

6.e3 d5 7.Be2 Bf5 8.Nc3 e6 9.Nf3= Bd6 10.Nd4 Bg6=+ 11.0–0 0–0 12.f4= Nbd7 13.Nb3 c5 14.bc5 Nc5=+ 15.Nb5 Nd3 16.Bf6 gf6?? 17.N3d4 Be4 18.Qb3 Nc5 19.Qa2 Be7 20.Nc3 f5 21.Ne4 Ne4 22.Rfb1 Qd8 23.a4 Rb8 24.a5+= Bf6 25.Rb4 Kh8 26.Rab1 Bd4 27.Rd4+= ½–½. Brinzei,R – Bololoi,S, corr, 1966.

6.e3 d6 7.Bd4 c5 8.bc5 dc5 9.Bc3 =.

6.e3 d6 7.Bd4 c5 8.Bf6 ef6 9.Nc3 =.

6.e3 d6 7.Bd4 Qc7 8.Bf6 ef6 9.d4 Be7 (9...d5 10.Nd2=) 10.Bd3 0–0 (10...c5 11.Nd2=) 11.Nf3 Na6 (11...d5 12.Nbd2=) 12.Nc3+= c5 (12...Bg4 13.0–0+=) 13.Nd5 Qd8 14.Ne7 (14.b5 Nc7 15.Nb6 Rb8–/+) 14...Qe7 15.bc5 dc5 16.Qc2 cd4 17.Nd4 Nc5 (Better is 17...h6!?+=) 18.Bh7–/+ Kh8 19.Bf5 Bf5 20.Qf5 Kg8 21.0–0 Ne4 (21...Ra5 22.Qg4 Rfa8 23.Nf5–/+) 22.Qg4+– Nd2?? (Better is 22...Nd6+–) 23.Nf5 Qe4 24.Qg7 1–0. market (2245) – Tofte, GameColony.com, 2002.

6.e3 d6 7.f4 Bf5 =.

6.e3 e6 7.Bf6 gf6 8.Qb3 Bb4=+ 9.Nc3 Ba5 10.Qb6 Bb6 11.Nge2 Bc7 12.Nd4 b5 13.Ne4 Ke7 14.Bd3 f5 15.Nc5 d6 16.Ncb3 c5 17.Nb5= Bd8 18.Nc3 Bd7 19.0–0 Nc6 20.Bb5 Ne5 21.Bd7 Kd7 22.d4 Rg8?? 23.de5+– de5? 24.Nc5 Ke7 25.Rad1 Ba5 26.Rd7 Kf6 27.Nb5 Rg6 28.Nd6 Rf8 29.f4 ef4 30.ef4 Bb6 (31.Rc1 Rg7+–). HMBCHESS2 – deadmonk, Live Game Caissa's Web, 2005.

4.a3 c5

5.Qa4 Ra7 6.b5 d5 7.c4 dc4 8.Nc3 Nf6 9.e3 Nbd7 10.Nf3 Qd6 11.b6 Qb6 12.Bc4 e6 13.Nb5 Qc6? 14.Ne5 Ne5+/– 15.Be5 Nd7 16.Bg3+– Nb6 17.Qb3 a4 18.Qb1?? Ra5 19.Nc7 Ke7 20.Bb5 Qg2= 21.Ne8?? Qh1 22.Ke2 Qb1 23.Bd6= Kd8 24.Bc7 (24.Rb1?? Bd6 25.Nd6 Ke7–+) ½–½. Draves,Rodney – Christensen,Wade (1785), Milwaukee, Wisconsin State Closed Ch USA, 2009.

5.Qa4 Ra7 6.b5 d5 7.c4 dc4 8.e3 Nd7 =.

5.Qa4 Ra7 6.b5 d5 7.d3 Nd7 8.c4 d4 9.Nf3 Qc7 10.g3 h6 11.Bg2 b6 12.0–0 e5 13.Nbd2 Be7 14.Ne1 Ngf6= 15.Bc6 0–0 16.e3 Nh7 17.ed4 ed4 18.f4 Ndf6 19.Nef3 Ng4 20.Rfe1 Ne3 21.Nf1 Nf5 22.Ne5 Bd6 23.Qd1 Ne7= 24.Bg2 Be5 25.Re5 Nf6 26.Bf3 Bh3 27.a4 Qc8 28.Qd2 Ng4 29.Bg4 Qg4 Black fights for the Initiative 30.Qe2 Ng6 31.Qg4 Bg4 32.Ree1 Bf5 33.Rad1 Re7 34.Re7 Ne7 35.Kg2 Re8 36.Bc1 Ng6 37.Kf2 Nf8 38.Ba3 Nd7 39.g4 Bg4–+ 40.Re1 Re1 41.Ke1 g6 42.Ng3 Bf3 43.Ne4 Be4 44.de4 Nf6 45.e5 Nd7 46.Ke2 Kf8–+ 47.Kd3 Ke7 48.Bc1 Ke6 49.Ke4 f6 50.ef6 Nf6 51.Kf3 Kf5 (52.h3 Ne4–+) 0–1. Scholz,J – Pfeiffer,U, corr, 1972.

5.Qa4 Ra7 6.b5 Nf6 7.c4 =.

5.Qa4 Nc6 6.b5 =.

5.Qa4 e6 6.b5 d5 7.c4 Nd7 =.

5.Qa4 e6 6.b5 d5 7.e3 c4 8.d3 cd3 9.Bd3 Nd7 10.Nf3 Nc5 11.Qc2 Nd3 12.Qd3 a4 13.c4 dc4 14.Qc4 Bd7 15.Nc3 Nf6 16.Ne5 Bd6 17.Nd7 Nd7 18.Na4 Qa5 19.Nc3 Ne5 20.Qe2 Rc8 21.Rc1 Nc4 22.Ba1 Ba3 23.Rc2 Bb4 24.0–0 Na3 25.Ra2 Bc3 26.Rc1 0–0 27.Bc3 Rc3 28.Qb2 Rfc8 29.Rca1 Qc7 30.g3 Rc1 31.Kg2 Ra1 32.Qa1 Nb5 33.Ra8 b6 34.Kh3 Nd6 35.Ra7 Qc3 36.Qd1 Qc6 37.Qg4 Qe4 38.Qd1 Qf5 39.g4 Qd5 40.Qa4 Qf3 41.Kh4 Qf2 42.Kh3 Qe3 43.Kh4 Qf2 44.Kh3 Rc3 0–1. Todaro,Giuseppe – Alaimo,Riccardo, Catania, 1993.

5.Qa4 e6 6.e4 Be7 7.Nf3 Nf6 8.e5 Nd5 9.d4 0–0 10.dc5 Bc5 11.Qc2 Be7 12.c4 Nf4 13.c5 Qc7 14.Nc3 ab4 15.ab4 Ra1 16.Ba1 Nc6 17.Qe4 Nb4 18.Qb4 ½–½. Van Esbroeck – Hasler, email 4AMM–03 1997.

5.Qb3 Nf6 6.e4 =.

5.Qc2 ab4 6.cb4 Na6 7.Nc3 cb4 8.Nd5 Qc6 9.Qc6 bc6 10.Nb4 Nb4 11.ab4 Ra1 12.Ba1 Ba6 13.Nf3 Nf6=+ 14.e3 Bf1 15.Rf1 e6 16.Bc3 Nd5 17.Ke2 f6 18.Rb1 Nc7 19.Ra1 Bd6 20.Ra7 Ke7 21.Rb7 Ra8=+ 22.Nd4 White plans b5 Kd8 23.b5 c5 The passed pawn on b5 will quickly become a dangerous weapon 24.Nb3 Nd5 With the idea Kc8 25.b6 Kc8 26.Ra7=+ Nb6 27.Ra8 Na8 28.d4 cd4 29.Nd4 Be5 30.f4 Bd4 31.Bd4 Nc7 32.g4 Kd8 33.Bb6 d5–/+ 34.h4 Kd7 35.Kd3 Nb5 36.Bc5 Nd6 37.Bb4 Ne4 38.Be1 Ke7 39.Kd4–/+ Kf7 40.f5 ef5 41.gf5 Nd6 42.Kd5 Nf5 43.Ke4 Kg6 44.Kf4 Nh6 45.e4 Kh5 46.Kg3 Nf7 47.Bb4 Nd8 48.Bf8 Ne6 49.Be7 Kg6 50.Kg4 h5 51.Kg3 Kf7 52.Bb4 Nf8 53.Bd2 Ng6 54.Be1 Ke6 55.Kf3 Kd6 56.Bg3 Kc5 57.Ke3 Kc4 58.Be1 Ne5 59.Bg3 Kc3 60.Kf4 g6 61.Ke3 Ng4 62.Kf4 Kd2 63.Kf3 Ne5 64.Kf4 Ke2 65.Bh2 Kf2 66.Bg3 Kg2 67.Bf2 Nd3 (68.Ke3 Nf2–+; 67...Kf2?!=) 0–1. Kralovec,Erik (2275) – Schwab,Rene (2245), AUT–chT2O, 1992.

5.Qc2 cb4 6.ab4 Nc6 7.e3 e6 8.b5 Nb8 9.c4 Nf6 10.Nf3 Be7 11.d4 d6 12.Bd3 0–0 13.0–0 Nbd7 14.Nbd2 Qc7+= 15.e4 g6 16.e5 de5+= 17.Ne5 Ne5 18.de5 Nd7 19.h4 Ne5–/+ 20.h5 Bf6 21.hg6 hg6 22.Ne4 Bg7 23.f4 Ng4 24.Bg7= Kg7 25.Qc3 e5=+ 26.Be2 f6 27.Rae1 Bf5 28.Bg4 Bg4 29.c5 a4 30.Nd6 b6 31.fe5+/– Qc5 32.Qc5 bc5 33.e6?? c4?? 34.e7+/– Rfe8 35.Ne8 Re8 36.Rf4 Bd7 37.b6 c3 38.b7 Kf7 39.Rc4+– c2 40.Rc2 g5 41.Rc7 Be6 42.Rc8! Bc8 Theme: Interference 43.b8Q Be6 44.Qb4 Bf5 45.Qd6 Bg4 46.Rf1 f5 47.Qe5 Re7 48.Rf5 Bf5 (49.Qf5 Ke8 50.Qg5 Kf7+–). Rajaz – Rdeniro, ICC, 2002.

5.Qc2 c4 6.d3 =.

5.Qc2 d5 =.

5.d4 ab4 6.dc5 Qf6 7.ab4 Ra1 8.Ba1 +/–.

5.e3 cb4 6.Qb3 (6.ab4 Nc6=) 6...Nc6 7.cb4 ab4 8.Bc4 (8.Nf3 e6=) 8...e6=+ 9.Nf3 (9.Bd3 Nf6=+) 9...Na5 10.Qd3 (10.Qa4 ba3 11.Ba3 Nf6=+) 10...Nc4–/+ 11.Qc4 d5 (11...ba3 12.Ba3 Qc6 13.Qb3–/+) 12.Qb3=+ Bd6?? (12...f6 13.0–0=+) 13.0–0 Bd7?? 14.Nc3?? Qc7 15.ab4 Ra1+= 16.Ra1 Ne7 17.Ne2 Bc6 18.Ra8+/– (18.Ra8 Nc8 19.b5+/–) 1–0. mic (2185) – pcmartinscapi (2225), net–chess.com, 2008.

5.e3 d5 6.Nf3 =.

5.e4 ab4 6.ab4 Ra1 7.Ba1 cb4 =.

5.e4 Nf6 6.e5 Nd5 =.

5.Nf3 ab4 6.cb4 cb4 7.Bd4 Qd8 8.e3 Nc6 9.ab4 Ra1 10.Ba1 Nb4 11.Qb3 Nc6 12.Be2 e6 13.0–0 Nf6 14.Re1 Be7 15.Nc3 0–0 16.Nb5 ½–½. Bohus,Aladar – Harasta,Vladimir, Rimavska Sobota, 1975.

5.Qb3 ab4

6.cb4 e6 7.Bc3 cb4 8.ab4 Ra1 9.Ba1 d5 =.

6.cb4 Nf6 =.

6.ab4 Ra1

7.Ba1 cb4 8.Qb4 Qb4 9.cb4 Nc6 10.Bc3 d5 11.b5 d4 12.bc6 dc3 13.cb7 cd2 14.Nd2 Bb7 +=. Sokolski.

7.Ba1 cb4 8.Qb4 Qb4 9.cb4 Nc6 (9...d5 10.Nf3=) 10.Bc3 (10.b5 Nb4 11.Bc3 e6=) 10...d5 11.b5 d4 (11...Na7 12.b6 Nc6 13.e3=) 12.bc6 (12.Bb2 Na7=) 12...dc3 13.cb7 (13.Nc3 bc6 14.Nf3 e6=) 13...cd2 14.Nd2 Bb7 15.e3 ½–½. Yarmolyuk,Yury – Tyutyunnik,Roman, internet, 2007.

7.Ba1 cb4 8.cb4 Na6 =.

7.Ba1 Nf6 8.e4 =.

6.cb4 cb4

7.ab4 e6?? 8.Ra8 Qc7 9.Nc3 +–.

7.e3 Nc6 8.Nc3 e6 9.Na4 Qa5 10.ab4 Qb4 11.Qb4 Nb4 12.Rc1 Nc6 13.Nb6 Rb8 14.Nf3 Nf6 15.Bf6 gf6 16.Bb5 Be7 17.Ke2 Bd8 18.Nc4 Ke7 19.Rb1 Na5 20.Na5 Ba5 21.Ra1 b6 22.Rhc1 Bb7 23.Rc7 Bf3 24.Kf3 Rbd8 25.Ra7 Rhg8 26.h4 Kd6 27.d4 f5 28.Rc1 f6 29.Rcc7 Rg7 30.g3 h5 31.Kg2 Rf7 32.Be2 Rh7 33.Rcb7 Kc6 34.Bf3 Kd6 35.e4 fe4 36.Be4 f5 37.Bf3 Ke7 38.Bc6 Kd6 39.Bb5 Rg7 40.Kf3 Rh7 41.d5 ed5–/+ 42.Kf4 Ke6 43.Bd3 Rf8 44.Bb5 Rff7 45.Rc7 Rhg7 46.Rc2? Kd6?? 47.Rc8?? Rg4–+ 48.Kf3 f4 49.Kg2 fg3 50.fg3 Rfg7 51.Kh2? Rg3 52.Rd7 Rd7 53.Rc6 Ke5 54.Kg3 Rg7 55.Kh3 d4 56.Rh6 Kf4 57.Rh5 Bb4 58.Bc4 Rd7 59.Rb5 Bc5 60.Rb3 Re7 61.h5 Re3 62.Re3 Ke3 63.h6 d3 64.Bb3 d2 65.Kh4 Ke2 66.Kg4 Be3 67.Kf5 0–1. Koper,Konrad (1660) – Dabrowska,Paula, Szachowe Lato Poznan Poland, 2010.

5.Qb3 e6

6.b5 a4=+ 7.Qc2 Qb5 8.e4 Qc6 9.e5 (9.c4 d6=+) 9...d5 10.f4 (10.Nf3 b5–/+) 10...Ne7–/+ 11.Nf3 h5 (11...Ng6 12.g3–/+) 12.Be2 Nf5 (12...Ng6 13.g3–/+) 13.0–0 (13.c4 dc4 14.Qc4 Ra5=+) 13...c4–/+ 14.Nd4 Qb6 15.d3? (better is 15.Kh1 Nd4 16.cd4–/+) 15...Bc5 16.Kh1 cd3 17.Bd3 Ne3 18.Qf2 Nf1 19.Bf1 Nc6 20.Bb5 Bd4 21.Bc6 bc6 22.cd4 Rb8 23.Bc3 Qb3 24.Bb4 Qd1 25.Qg1 Qg1 26.Kg1 Ba6 27.Nc3 Bb5 28.Kf2 f6 29.Bd6–/+ Rb7 30.Rb1 fe5 31.fe5 g5 32.Ke3? Rhh7–+ 33.g3 Rhf7 34.Bc5 Rf5 35.Na4 Rbf7 36.Nc3 Rf2 (36...Rf2 37.Rb5 R7f3#) 0–1. Baer,Cy (1895) – Langschmidt,Dirk (2015), RSS5E–11 remoteschach.de, 2007.

6.e3 Nf6 7.b5 a4 8.Qc2 d5 9.c4 dc4 10.Bc4 Be7 11.d4 Nbd7 12.Nf3 0–0 13.Nbd2 Qc7 14.e4 b6 15.e5 Nd5 16.h4 (16.Bd3 h6=) 16...f5 17.g4 Bb7 18.Ng5 Bg5 19.hg5 Nf4 20.0–0–0? Bh1–+ 21.Rh1 Qb7?? 22.f3 Nd5?? 23.gf5+= Rf5 24.Bd3 Rg5?? 25.Bh7+– Kf7 ½–½. Sweeney,Matthew – Murrell,Malcolm R (1735), Doeberl Cup Major, 2003.

5.e3 ab4

6.cb4 cb4 7.Bd4 Qd6 8.Qb3 =.

6.cb4 cb4 7.Bd4 Qe6 8.a4 Nc6=+ 9.Bb2 Nf6 10.Nf3 h6 11.Qc2 g6 12.Bc4 d5 13.Bb5 Bg7?? 14.Nd4+/– Qe4? 15.Bc6+– bc6? 16.Qc6 Nd7 17.Qa8 0–0 18.0–0 Ne5 19.Qb8 Bh3 20.f3 Rb8? 21.fe4 Bd7 22.ed5 Nd3 23.Bc1 b3 24.Ba3 b2 25.Ra2 Ba4 26.Be7 Bd4 27.ed4 Bb5 28.Bd6 Rb7 29.Ra8 Kg7 30.Nc3 Nc1 31.Be5 f6 32.Bf6 Kf7 33.Be5 Ke7 34.d6 Kd7 35.Rf7 Kc6 36.d5 Kb6 37.Bd4# 1–0. vallabhan (1610) – guinguin, internet, 2007.

4.a3 d5

5.Qc2 e5 6.e3 Bd6 7.Nf3 Nf6 8.Be2 0–0 9.0–0 ab4 10.cb4 Qc7 11.Nc3 e4 12.Nd4 Bh2 13.Kh1 Bg4 14.g3 Bg3 15.fg3 Qg3 16.Bg4 Ng4 0–1. Teodorescu – Duminica, Herculane 1994.

5.Qc2 e5=+ 6.Nf3 Bd6 =+.

5.d4 Nd7 6.e3 e5 7.Bd3 Ngf6 8.Ne2 e4 9.Bc2 Qc7 10.0–0 Nb6 11.Nd2 Ng4 12.Ng3 h5 13.f3 Ne3 14.Qe2 Nc2 15.Rac1 ab4 16.Rc2 ba3 17.fe4 Bg4 18.Qe1 ab2 19.ed5 Be7 20.Rb2 Nd5 21.c4 Nf6 22.Nde4 0–0 23.c5 Qd7 24.Nd6 Bd6 25.cd6 Qd6 26.Rb7 Qd4 27.Kh1 Rfe8 28.Re7 Re7 29.Qe7 h4 30.Ne2 Qd3 31.Re1 Be2 32.Re2 Ra1 33.Re1 Qf1 34.Rf1 Rf1 0–1. wote – jaburr (2245), gameknot.com, 2012.

5.d4 Nd7 6.Nf3 g6 7.e3 Bg7 8.Nbd2 e5 9.de5 Ne5 10.Ne5 Be5 11.Nb3 (11.Nf3 Bg4+=) 11...ab4 (11...Nf6 12.Bd3+= (12.Na5? Ra5 13.f4 Bd6–+)) 12.ab4 Ra1 13.Ba1 Ne7 14.Bd3 0–0 15.0–0 Bb8 (15...Bf5 16.Nd4 Bd3 17.Qd3–/+) 16.Qc2 (16.Bb2 Bd6=) 16...Qc7 (16...Bf5!?+=) 17.g3= b5 18.Qb2 Qe5 19.Qd2 Qh5 20.Be2 (20.Bb2 Nf5+=) 20...Bg4= 21.Bg4 Qg4 22.Nd4 (22.Bb2 Bd6=) 22...Be5+= 23.Nc6? (better is 23.Qa2!?+=) 23...Nc6–+ 24.Qd5 Qe6 25.Qb5 Ra8 26.Bb2? (better is 26.e4–/+) 26...Ra2–+ 27.Rb1 (27.Ba1 Bg7–+) 27...Qf5 (27...Bg7 28.Qe2 Bc3 29.Qc2–+) 28.Qf1 (28.Rf1 Qf6 (28...Rb2?! 29.Qc6 Rb3 30.Rc1–+) 29.Ba1 Bc3 30.Bc3 Qc3–+) 28...Nb4! 29.cb4 Bb2 (29...Rb2?! 30.Rb2 Bb2 31.Qc4–/+) 30.Qd1 (30.b5 Bf6–+) 30...Bc3 (better is 30...Bd4! 31.Qe1 Be3 32.Qe3 Qb1 33.Kg2 Qb4 34.Qf3–+) 31.Qf1 White prepares the advance b5 (31.Qd8 Kg7 32.Rf1 Rb2–+) 31...Bd2 (better is 31...Rf2 32.Qf2 Qb1 33.Kg2 Bb4–+) 32.b5 (32.Rb3 Qe4 33.b5–+) 32...Be3! 33.fe3 Qc2 0–1. Jorgensen,Orla Eilegaard – Andersen,Dani (1960), Borup DEN, Skovbo GM, 2014.

5.d4 Bf5 6.e3 Nf6 7.Nf3 e6 8.Nbd2 Bd6 9.Be2 0–0 10.0–0 Nbd7 11.Nb3 (11.c4 Bb8=) 11...a4 12.Nc5 Nc5 13.dc5 Bc5 14.bc5? (better is 14.c4 Ne4 15.Be5+=) 14...Qb2–+ 15.Rb1?? (better is 15.Re1–+) 15…Bb1 0–1. Rutkowski,Eugeniusz (1980) – Kowalczyk,Marian (2015), Druzynowe Mistrzostwa Polski Niewidomych Poland, 2008.

5.d4 Bf5 6.Nf3 Nf6 7.e3 e6 8.Ne5 Nbd7 9.Nd2 Ne5 10.de5 Ng4 11.Be2 Ne5 12.0–0 Nd3 13.Bd3 Bd3 14.Re1 Bd6 15.Nf3 Be4 16.Nd4 0–0 17.f3 Bg6 18.f4 Be4 19.Qg4 Rae8 (19...ab4?! 20.Ne6 fe6 21.Qe6 Kh8 22.Qd6 ba3 23.Ba3–/+) 20.Rec1 e5 21.fe5 Be5 22.c4? c5 23.cd5 cd4 24.Kh1 Qh6 25.h3 f5 26.Qe2 Qh3 27.Kg1 Qh2 28.Kf1 Qh1 29.Kf2–+ Qg2 30.Ke1 Bg3 31.Kd2 de3 32.Ke3 Bf3 (33.Kd4 Qe2 34.Kc3 Qe3 35.Kc2 Be4 36.Kd1 Qd3) 0–1. Wilmy – ddddale, HCL–T104 playchess.de, 2003.

5.e3 ab4 6.cb4 Bf5 7.Nc3 e5 8.Nf3 Qc7 9.Be2 Be7 10.d4 e4 11.Ne5 Bf6 12.Ng4 Be7 13.0–0 Nd7 14.Qc2 Nb6 15.f3 Bd6 16.f4 h6 17.Nf2 Nf6 18.Rfc1 Be7 19.Nh1 0–0 20.h3 Rfe8 21.Ng3 Be6 22.Nf1 Red8 23.Nd2 Rf8 24.Nb3 Bf5 25.Nc5 Rfe8 26.Nd1 Bd6 27.Nf2 Red8 28.Nh1 Bc5 29.dc5 Nbd7 30.Rd1 Re8 31.Rac1 b5 32.Qc3 Bh7 33.Ng3 Bg6 34.Bg4 Nf8 35.Rd2 Kh8 36.Rcd1 Kg8 37.Kf2 Ng4 38.hg4 f6 39.f5 Bf7 40.Rh1 Nd7 41.Ne2 Ne5 42.Rh4 Kh8 43.Nf4 Nc4 44.Rd1 Red8 45.Qd4 Kg8 46.Rdh1 Na3 47.Rh6 gh6 48.Rh6 Qe7 49.Rf6 Rf8 50.g5 Nc2 51.Qc3 Nb4 52.Qb4 Ra4 53.Qc3 Rc4 54.Rg6 Bg6 55.Qh8 Kf7 56.fg6 Ke8 57.g7 Rc2 58.Kg1 Qc5 59.Bd4 Rc1 60.Kh2 Qd6 61.Qh5 Kd7 62.gf8Q Rh1 63.Kh1 Qf8 64.Qh3 Kd6 65.Be5 Kc5 66.Ne6 Kc4 67.Nf8 b4 68.Qd7 Kb5 69.Ne6 Kb6 70.Nd4 c5 71.Qc6 Ka5 72.Bc7 1–0. NN – COMP.

5.Nf3 c5 6.d4 ab4 (Better is 6...cd4 7.Qd4 Qd4 8.cd4 ab4 9.ab4 Ra1 10.Ba1 Bf5=+) 7.dc5+/– Qc5?? (Better is 7...Qf6 8.ab4 Ra1 9.Ba1 e6+/–) 8.ab4+– (8...Ra1 9.bc5+– (9.Ba1?! Qd6=); 8.cb4?! Qd6+=) 1–0. Bonetti,Shane – Mr_Anonymous, ICC, 2002.

5.Nf3 Nd7 6.e3 e6 (6...e5?! 7.c4 ab4 8.Ne5 Ne5 9.Be5) 7.Be2 Ngf6 8.0–0 Bd6.

5.Nf3 Bf5 6.d3 Nd7 7.Nbd2 Ngf6 8.Nh4 Bg6 9.e3 e5 10.Be2 Bd6 11.Nb3 a4 12.Nd2 c5 13.Ng6 hg6 14.e4 Qc7 15.h3 Nf8 16.d4 cd4 17.cd4 ed4 18.Bb5 Ke7 19.Bd4 Ne6 20.Rc1 Qb8 21.Bb2 Ne4 22.Ne4 de4 23.Qg4 Be5 24.Qe2 Rh5 25.Bc4 Bb2 26.Qb2 Qe5 27.Qe5 Re5 28.Be6 Ke6 29.Rc7 b5 30.Ke2 Rd8 31.Rhc1 Rd7 32.R1c6 Ke7 33.Ke3 Rg5 34.g3 Rgd5 35.Rc3 f5 36.f3 Rd3 37.Rd3 Rc7 38.fe4 fe4 39.Ke4 Ke6 40.Kf4 Rc4 41.Kg5 Rc1 42.Rf3 Rb1 43.Rf8 Rb3 44.Rb8 Rf3 45.Kg4 Ra3 46.Rb5 Rb3 47.Kh4 Kf6 48.Rb6 Ke5 49.Rg6 Rb4 50.g4 a3 51.Ra6 Rb3 52.Ra4 Kd5 53.Ra7 Kc5 54.Rg7 Kb6 55.Rg8 Ka7 56.Rg5 Rb6 57.Ra5 Ra6 58.Ra3 Ra3 59.g5 Kb6 60.g6 Ra1 ½–½. Mroz – Mglosiek, corr PL 1986–88.

5.Nf3 Bf5 6.Nd4 Bg6 7.h4 (7.f4 c5 8.Qa4 Nd7+=) 7...Nf6 8.f3 (8.Nb3!?+=) 8...e5–/+ 9.Nc2 Bd6 10.g4 e4 11.Rg1?? (better is 11.d4 ef3 12.ef3 Bg3 13.Kd2–+) 11...Qg1 12.d4 (12.d3 ed3 13.ed3 Bg3 14.Kd2 Bf4 15.Ne3 Be3 16.Kc2 h5–+) 12...ef3 13.ef3 Bg3 14.Kd2 Bf4 15.Ke1 Qg3 16.Ke2 Qh2 (16...Qh2 17.Bg2 Qg2 18.Ke1 Bg3) 0–1. bob_sapp_the_bea – Fritz 11, 2013.

5.Nf3 Nf6 6.g3 Nbd7+= 7.Qc2 e5 8.Bg2 e4 9.Nd4 Ne5 10.d3 (10.0–0 Nc4+=) 10...ed3 (10...ab4 11.cb4 ed3 12.ed3+=) 11.ed3 Bd6 (11...ab4 12.Qe2 (worse is 12.ab4 Ra1 13.Ba1 Qa6–/+; worse is 12.cb4 Bc5 13.Qc3 0–0–/+) 12...Nfg4 13.cb4+= (worse is 13.ab4 Ra1 14.Ba1 Qa6–/+)) 12.0–0 0–0 13.Nd2 Bd7 (13...Re8 14.Rfe1+=) 14.N2b3 a4 15.Nd2 c5 16.N2f3? (16.bc5 Bc5 17.N2f3 Rfe8+=) 16...Nf3?? (better is 16...cd4 17.Nd4 Rac8–+) 17.Nf3+= Rac8 (17...Bf5 18.Nh4 Be6 19.bc5 Qc5 20.Rfe1=) 18.Qd2 (18.bc5 Qc5 19.c4 b5=) 18...Rfe8+= 19.Rfe1 Qa6 (19...Bf5 20.Re8 Re8 21.c4 dc4 22.dc4=) 20.bc5 (20.c4 Be7=) 20...Bc5+= 21.d4 (21.Ne5 Bf2 22.Qf2 Re5 23.Re5 Ng4+=) 21...Ne4 22.Qd1 (22.Qc2 Bd6+=) 22...Bd6 23.Rc1 (23.Nd2 Nc3 24.Re8 Be8 25.Bc3 Rc3 26.Bd5 Ra3 27.Ra3 Ba3+=) 23…b5 (23...b5 24.Ne5 Be6+=; 23...Qb5 24.Qc2–/+). Grund,Karl – Schuehler,Ernst, corr, 1983.

5.Nf3 Bg4 6.d4 Nd7 7.Nbd2 Ngf6 8.e3 e6 9.Be2 Bd6 10.0–0 0–0 11.Nb3 ab4 12.ab4 Qc7 13.h3 Bf3 14.Bf3 e5 15.Nc5 e4 16.Bg4 Ng4 17.Qg4 Bc5 18.bc5= g6 19.Ra8 Ra8= 20.Ra1 Ra1 21.Ba1 f5 22.Qd1 Qa5 23.Qb1 b5 24.cb6 Qb6 25.Qb6 Nb6 26.Kf1 Nc4 27.Ke2 Kf7 28.Kd1 Ke6 29.Kc2 g5 30.Bb2 Nb2 31.Kb2=+ f4 32.Kc2 h5 (32...f3 33.gf3 ef3 34.Kd3=+) ½–½. Wartig,Wolfgang – Markus, corr SOK–89–41, 1989.

5.Qc2 Nf6

6.d3 e5 7.Nd2 Be6 8.Ngf3 Nbd7 9.g3 h6 10.Bg2 Bd6 11.ba5 Qa5 12.0–0 0–0 13.c4 d4 14.e4 de3 15.fe3 Ng4 16.Rfe1 Qb6 17.Nf1 e4 18.N3d2 ed3 19.Qd3 Qb2 20.h3? (better is 20.Qd6!? Qe5 21.Qd4+=) 20...Bg3! 21.Ng3 Nge5 22.Qb1?? (better is 22.Qd4 Qd4 23.ed4 Nc4 24.Re6 Nd2 25.Re7–+) 22...Qd2 23.Ra2 Qd6 24.Rd1 Nf3! 25.Bf3 (25.Kf2 Qe7 26.Bf3–+) 25...Qg3 26.Bg2 Qe3 27.Kh2 Ne5 28.Rg1 (28.Qb7 Qf4 29.Kg1 Qg3–+) 28...Bh3! 29.Qb2 (29.Bh3 Nf3 Double attack) 29...Bg2 (29...Be6 30.Kh1 Bc4 31.Qd2–+) 30.Qg2 (30.Rg2 Ra5 31.c5 Ra4–+) 30...Nf3 31.Kh1 Qg1 32.Qg1 Ng1 33.Kg1 Rfe8 34.Ra1 Re2 35.c5 f5 36.a4 f4 37.a5 g5 38.Kf1 f3 39.Ra4 Rd8 40.Ra1 g4 41.Rc1 g3 42.Rb1 Rdd2 43.Ra1 Rh2 44.Kg1 f2 45.Kf1 g2 0–1. Dejna,Miroslaw – Renkowski,Piotr (1685), VI MFSz Turniej Otwarty Poland, 2009.

6.e3 Bg4 7.Be2 Nbd7 8.Bg4 e6?? 9.Bf3 Bd6 10.Ne2 e5 11.d3 1–0. jupiter (2410) – allensixers (2570), net–chess.com, 2002.

6.e3 Bg4 7.Be2 Nbd7 8.Bg4 Ng4 9.h3 Nge5 10.f4 Nc4 11.Ne2 e6 12.0–0 Be7 13.Nd4 0–0 14.ba5?? Qb2–+ 15.Qb2 Nb2 16.d3 Nd3 17.Nd2 Ra5 18.Rfb1 N7c5 19.N2b3 Nb3 20.Rb3 Nc5 21.Rb6 Bf6 22.Kf2 g6 23.g4 Rfa8 24.g5 Bd4 25.ed4 Ne4 26.Ke3 Ra3 27.Ra3 Ra3 28.Kd3 Rc3 (28...Rc3 29.Ke2 Nd6–+) 0–1. waldi1962 – myszka862 (1810), kurnik, 2012.

6.e3 g6 7.c4 ab4 8.cd5 Bf5 9.Qb3 cd5 10.ab4 Ra1 11.Ba1 Bg7 12.Bd4 Qc7 13.Bb5 Bd7 14.Bd7 Nbd7 15.Ne2 0–0 16.0–0 Qd6 17.Bc5 Nc5 18.bc5 Qc5 19.Qb7 Qd6 20.d4 Rb8 21.Qa7 Ne4 22.Nec3 Nc3 23.Nc3 e6 24.Na4 Bf8 25.g3 Rb4 ½–½. Bothe,Michael – Gutzmann,Tobias, Kassel op, 1999.

6.e3 g6 7.d4 Bf5 8.Bd3 Bd3 9.Qd3 Bg7 10.Nd2 0–0 11.Ngf3 ab4 12.cb4 Nbd7 13.0–0 Ra4 14.Nb3 Ne4 15.Rfc1 Rfa8 16.Rc2 Qa6 17.Qa6 R4a6 18.Na5 Rb6 19.Rac1 Rb5 20.g3 c5 21.Nb7? (better is 21.dc5 Bb2 22.Rb2 Ndc5 23.Rbc2=) 21...Rb7–+ (21...cb4?! 22.Rc8 Rc8 23.Rc8 Bf8 24.Nd8+=) 22.dc5 Bb2 23.c6 Bc1 24.cb7 Rb8 25.Rc8 Kg7 26.a4?? (26.Rc1 Rb7 27.g4 e5–+) 26...Nd6 (better is 26...Bb2 27.Rc7 Ne5 28.Ne1–+) 27.Rc1 Rb7 (27...Nb7?! 28.Rc7 Nf6 29.b5–/+ (29.Re7? Nd6–+)) 28.b5 Nc4 29.Nd4 Nc5 (better is 29...Ndb6 30.Ra1 Ra7–+) 30.a5–/+ e5 31.a6 Rc7 32.Nf3 f6 33.Ra1 Ra7 34.Ne1 Kf7 35.Nc2 Nd6 36.Rb1 Ke6 37.Na3 f5 38.Rc1 Na6! 39.ba6 Ra6 40.Nb1 Ra1 41.Rf1 Nc4 42.Nc3 Rf1 43.Kf1 d4 44.Ke2?? (better is 44.ed4 ed4 45.Ne2–+) 44…dc3 (44...dc3 45.Kd3 Nd6 46.Kc3 Ne4 47.Kd3 Nf2 48.Ke2 Ng4–+) 0–1. combijack (1770) – daletedoy (1665), gameknot.com, 2012.

6.d4 ab4

7.cb4 g6

8.Nc3 Qd4 9.e4 de4 10.Ne4 Qe4 11.Qe4 Ne4 12.Bh8 +=.

8.Nc3 Bf5

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nb6 –/+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc1 –/+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc2? Ne3–+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Qf4 Qf4 21.Ndf4 Nb6 –+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc2? Ne3–+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rae1 Nb6 22.Ne5 Nc4 –+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc2? Ne3–+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Bd4 Nd4 23.Qc3 Ne6 –+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc2? Ne3–+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Bb2 23.Qb2 Nf6 24.Ne5 Rad8 25.Rac1 d4 26.Red1 Nd5 27.Nd5 Rd5 28.Rd4 Re5 29.Rcd1 Nd4 30.Qd4 Rd5 31.Qd5 cd5 32.Rd5 Rd8 33.h3 Rd5 34.h4 Qc2 35.Kg3 Rd3 36.h5 Qe2 37.hg6 Qf3 38.Kh2 Qg3 39.Kh1 Rd1# 0–1. quad – technical3, Caissa's Web Live Game, 2004.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6 16.Ne2 Nc4 17.Qc2 Ne3 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Bb2 23.b5 Nf6 24.Nh5 d4 25.Ng3 Ng3 26.Qa5 Nd7 27.Qb6 Nc5 0–1. quad – technical3, Caissa's Web Live Game, 2004.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.f3 Nd6–/+ 16.Ne2 Nc4 17.Qc2? Ne3–+ 18.Qd2 Ng2 19.Kf2 Nh4 20.Nef4 Nf5 21.Rhe1 Bd4 22.Kg2 Nh4!? 23.Kg3 Bb2 24.Qb2 –+.

9.Qd1 Bg7 10.Na4 Qc7 11.Nc5 0–0 12.e3 Nbd7 13.Bd3 Bd3 14.Nd3 Ne4 15.Nf3 Nb6 =+.

5.d4 Nf6

6.Nd2 ab4 7.ab4 Ra1 8.Qa1 Na6 9.e3 Nc7 10.Bd3 g6 11.Ngf3 Bg7 12.0–0 0–0 13.Ne5 Be6 14.Nb3 Ra8 15.Qb1 Nce8 16.Nc5 Bc8 17.Qd1 Nd6 18.Qe2 Bf5 19.Bf5 Nf5 20.g4 Nd6 21.g5 Nfe4 22.Ne4 Ne4 (22...de4?! 23.f4=) 23.f3 Ng5 24.h4 Be5 25.hg5 Bd6 26.f4 f6 (26...Ra2 27.Ra1 Qa7 28.Qd1–+) 27.gf6 (27.e4!?–/+) 27...ef6–+ 28.Ra1 Ra1 29.Ba1 Qa7 30.Bb2 Qa2 31.Qc2 Kf7 32.Qc1 h5 33.Qa1? (better is 33.Qc2–+) 33...Qa1 34.Ba1 Ke6 35.Kf2 Kf5 36.Kf3 g5 37.fg5 fg5 (37...Kg5?! 38.e4–+) 38.Bb2 g4 39.Kg2 Ke4 (39...Ke4 40.c4 dc4–+) 0–1. Mr.Oldenslo – thenash, ChessWorld.net, 2012.

6.Nd2 Bf5 7.Ndf3 e6 8.Nh4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Nf5+= ef5 12.e3 Bd6 13.Ba6 Qa6–/+ 14.Ne2 0–0 15.0–0 Ra8 16.Bb2 Qa2 17.Qa1 g6 18.Qb1 Ne4 19.Rd1 Qb1 20.Rb1+= Ra2 21.Nc1 Ra4 22.Nd3 Nd2–/+ 23.Ra1 Ra1 24.Ba1+= Nc4 25.Nb2 Nb2 26.Bb2 b6 27.f3 c5 28.bc5+= bc5 29.Ba3 Kf8 30.Kf2 Ke7 31.dc5 Be5 32.Bb4 Kd7 33.g3 Kc6 34.h3 Bb8 35.g4 fg4 36.fg4 Ba7 37.Kf3 Bc5 38.Bc5 Kc5 39.g5 Kd6 40.e4+= Ke6 41.ed5 Kd5 42.Kf4 Ke6 43.h4 f5 44.gf6 Kf6 45.c4 h6 46.Ke4 Ke6 47.c5 g5 48.hg5 hg5 49.c6 Kd6 ½–½. ashoka_theking (1650) – berlinwall (1760), internet, 2007.

6.Nd2 Bf5 7.Ngf3 Nbd7 8.Nh4 Bg4 9.f3 Bh5 10.g4 Bg6 11.g5 Nh5 12.e3 f6 (12...e5!?=) 13.Ng6+= hg6 14.Bd3 f5 15.f4 Ng3 16.Rg1 Ne4 17.Qe2 e6 18.Ne4 fe4 19.Bc2 c5 20.Ba4 cd4 21.ed4 (worse is 21.cd4 ab4 22.Bd7 Kd7–/+) 21...Bd6 22.Qg4 Ke7 23.Qg3 Qc7 24.Rf1 Nb6 25.Bb3 Nc4 26.Bc4 Qc4 27.Rf2 Rh5 28.Rc1 Rah8 29.Rcc2 Rh3 30.Qg2 a4 31.Rce2?? (better is 31.Qf1–/+) 31...Qd3–+ (31...Rh2?! 32.Qh2 Rh2 33.Rh2–+) 32.Rd2 Re3 33.Kd1 Qb1 34.Bc1 Rc3 35.Rc2 Rhc8 36.Rc3 Rc3 (36...Rc3 37.Rc2 Ra3–+) 0–1. Derevianchenko,Ilia (1980) – Skliar,Andrey (2310), UKR–ch sf Alushta, 2008.

6.Nd2 g6 7.Ngf3 Bg7 8.e3 ab4 9.ab4 Ra1 10.Qa1 0–0 11.Be2 Nbd7 12.0–0 Qc7 13.h3 Nb6 14.Qa5 (14.c4 dc4 15.Nc4 Nbd5=) 14...Bf5 (14...Bh3 15.Ra1 Ra8 16.Qa8 Na8 17.Ra8 Bc8–+) 15.Qa1 Ra8 16.Qc1 Na4 17.Bd1 Bd3 18.Re1 b5 19.Bc2 Bc2 20.Qc2 Nb6 21.Ra1 Ra1 22.Ba1 Qa7 23.Bb2 Qa2 24.Qb3 Qb3 25.Nb3 Na4 26.Ba1 Nd7 27.Na5 Nb8 28.Nd2 f6 29.f4 e5 30.fe5 fe5 31.Nf3 e4 32.Nd2 Kf7 33.Kf2 Bh6 34.g4 Bg5 35.Nf1 Bd8 36.Nb3 Nd7 37.Nc1 Bh4 38.Kg2 Ndb6 39.Ne2? Nc4–+ 40.Nc1 Na3 41.Nb3 Nc2 42.Nfd2 Ne3 43.Kg1 Nc2 44.Nb1 Bd8 45.Kf2 Bb6 46.Ke2 h6 47.Kd2 Na1 48.Na1 Nb2 49.Ke2 Kf6 50.Nb3 Kg5 51.Na5 Ba5 52.ba5 Nc4 53.a6 Kh4 54.Nd2 Nb6 55.Nf1 Kh3 56.Ne3 Kh4 57.a7 Kg5 58.Kf2 Kf4 59.Ke2 h5 60.gh5 gh5 61.Kf2 h4 62.Ng2 Kg5 63.Ne3 Na8 64.Kg2 Kf4 65.Kf2 h3 66.Nf1 Nc7 67.Ke2 Kg5 68.Nh2 Kf5 69.Ke3 Na8 70.Nf1 Ke6 71.Kf4 Kd6 72.Kg3 Kc7 73.Kh3 Kb7 74.Kg3 Ka7 75.Kf4 Nb6 76.Nd2 Na4 77.Nb1 Kb6 78.Ke5 e3 79.Na3 Nc3 80.Nc2 e2 81.Kf4 b4 (82.Ne1 b3–+) 0–1. Ruhle,Ernst Albrecht – Schaad,Pierluigi, Pizol op, 1998.

6.e3 ab4 7.cb4 e6 8.Qc2 Be7 9.Bd3 g6 10.Nd2 0–0 11.Ngf3 Ne8 12.0–0 Bd6 13.Rfc1 Nf6 14.Nb3 Nbd7 15.Nc5 Qc7 16.a4 Be7 17.Qc3 Ne8 18.a5 Bf6 19.Nd7 Bd7 20.b5 Nd6 21.a6 Rfc8 22.Ba3 ba6 23.b6 Qb6 24.Bd6 Be8 25.Ra5 Bd8 26.Rca1 Bc7 27.Ra6 Ra6 28.Ra6 Qb7 29.Bc7 Qc7 30.Ra5 Bd7 31.Qc5 Qd8 32.Ne5 Be8 33.Ra6 Ra8 34.Nc6 Bc6 35.Rc6 Qe8 36.g3 Kg7 37.h4 Kg8 38.Kg2 Kg7 39.Ba6 Qd8 40.Bb7 Rb8 41.Rd6 Qe8 42.Qc7 1–0. Buch – Hasler, email 4AMM–03 1997.

6.e3 Bf5 7.Nf3 Nbd7 8.Be2 e6 9.Nh4 Bg6 10.Ng6 hg6 11.Nd2 Bd6 12.Nf3 Ne4 13.0–0 Qc7 14.g3 g5 15.Rc1 g4 16.Nd2 Ng3 17.hg3 Bg3 18.Bg4 Bh2 19.Kg2 Nf6 20.Bh3 Ke7 21.f4 g5 22.Rh1 g4 23.Rh2 gh3 24.Rh3 Rh3 25.Kh3 Rh8 26.Kg2 Qd8 27.Qf3 Qg8 28.Qg3 Qh7 29.Nf3 Ne4 30.Ng5 Qg6 31.Ne4 Qe4 32.Kf2 Qd3 33.Qg2 Kf8 34.Re1 Rg8 35.Qh1 Qg6 36.Ba1 Qc2 37.Re2 Qg6 38.ba5 Rg7 39.a4 Rh7 40.Qg1 Qe4 41.Bb2 Rh1 42.Ba3 Ke8 43.Qg8 Kd7 44.Qf7 Kc8 45.Qe8 Kc7 46.Bd6 Kd6 47.Qd8# 1–0. Machete99 – guest693, ICC, 2002.

5.e3 e5

6.c4 Nd7 7.cd5 cd5 8.d4 =.

6.d3 Bd6 7.Nd2 f6 8.e4 Ne7 9.Qh5 Ng6 10.Ngf3 ab4 11.ab4 Ra1 12.Ba1 0–0 13.Be2?? (13.g3 Qa6 14.Nb3 Be6–/+) 13...Be6 (Better is 13...Nf4 14.g4 Nh5 15.gh5 Bh3–+) 14.Nh4 Nf4 15.Qf3 d4 16.Nf5 (Better is 16.0–0!? dc3 17.Bc3 Bb4 18.Rb1–/+) 16...Bf5 17.ef5 dc3 18.Bc3 Bb4 19.Bb4 Qb4 20.Kd1? Nd7 21.g3 Nd5 (22.d4 b5–+ (< 22...Qd4 23.Bc4–+); Better is 21...Ra8!? 22.Ke1 Ra1 23.Bd1–+) 0–1. chevin – toaster, Live Game Caissa's Web, 2004.

6.d3 Be6 7.Nf3 f6 8.Be2 Nh6 9.0–0 Nd7 10.Qb3 Be7 11.d4 0–0 12.de5 fe5–/+ 13.a4 Nf5 14.e4 Nc5! 15.Qc2 Ne4 16.Nbd2 Nd2 17.Qd2 e4 18.Nd4 Nd4 19.Qd4 Qd4 20.cd4 ab4 21.a5 Ra7 22.Ra2 Rfa8 23.Rfa1 b3 24.Ra4 b5! 25.R4a3 Ba3 26.Ra3 Ra5 27.Rb3 Ra2 28.Bf1 R8a4 29.h4 h5 30.g3 Bg4 31.Kh2 Kf7 32.Bg2 g6 33.f3 ef3 34.Bf3 Rb2! 35.Rb2 Deflection from f3 35...Bf3 36.Rf2 Ra3 37.Rc2 Ra1 38.g4 hg4 39.Kg3 Ke6 40.Rc6 Kf5 41.Kf2 Ke4 42.Rg6 Ra2 43.Ke1 Ke3 44.Re6 Kd4 45.h5 g3 46.h6 g2 47.Rg6 Ke3 48.h7 Ra1# 0–1. tschulz – myfairlady, Internet, 2004.

6.d4 e4 7.f3 Nf6 8.fe4 Ne4 9.Nd2 Bf5 10.Ne4 Be4 11.Nf3 Bd6 12.Bd3 f5 13.Be4 fe4 14.Ne5 0–0 (14...ab4? 15.Qh5 Ke7 16.0–0 Be5 17.Qe5 Kd8 18.ab4 (18.cb4?! Qc7+/–; 18.Qg7?! Re8+–) 18...Ra1 19.Qb8 (19.Ra1?! Qc7 20.Qg5 Qe7+/–; 19.Ba1?! Qc7+/–) 19...Kd7 20.Qh8 Rf1 21.Kf1 Qa6 22.Ke1+–) 15.Qh5 Qc7 16.0–0–0 ab4 17.ab4 Nd7 18.Nd7 Qd7 19.Rdf1 g6 20.Rf8 Rf8 21.Qe2 Qf7 22.g3 Qf3 23.Qf3 Rf3 24.Re1 Rf2 25.Rh1 Kf7 26.Ba1 Kf6 27.Kd1?? (27.Bb2–+) 27...Ra2 (28.Bb2 Rb2–+) 0–1. chevin – toaster, Live Game Caissa's Web, 2004.

6.Nf3 Bd6 7.c4 f6 8.d4 ed4 9.Nd4 Qc7 10.c5 Be7 11.b5 cb5 12.Nc3 ½–½. Dovzik,Juri (2375) – Revuckij,Vladimir (2215), Szeged TT04 IM, 1998.

6.Nf3 f6 7.Qb3 Bd6 8.d4 e4 9.Nfd2 a4 10.Qc2 f5 11.f3 Qc7 12.f4 b5 13.Be2 Be6 14.h3 Be7 15.0–0 Nd7 16.g4? g6 17.Rf2 Nh6 18.Rg2 0–0–0?? 19.Nf1 Nf7 20.Nbd2 Nf6 21.Qd1 Qd7 22.Nh2 Rdg8 23.g5 Ne8 24.Qe1 h6–+ 25.Qg3? hg5 26.fg5 Ng5 (27.h4 Nf7–+) 0–1. HMBCHESS2 – tea, Live Game Caissa's Web, 2005.

5.e3 Bf5

6.Qa4 Nd7 7.c4 Nc5 8.Qd1 Nd3 (8...ab4!? 9.cd5 cd5–/+) 9.Bd3= Bd3 10.Bd4 (10.c5 Qc7=) 10...Qc7 11.cd5 ab4 12.Qb3 (12.ab4 Ra1 13.Ba1 cd5 14.Qa4 Kd8 15.Qa8 Kd7=) 12...Be4 13.Nf3 Bd5 14.Qb4 Bf3 15.gf3 e6 16.Qb2 f6 17.Ke2 Bd6 18.h3 Ne7 19.Rg1 Nd5 20.Qb3 Qd7 21.Nc3 e5 (21...c5 22.Nd5 ed5 23.Bc3+=) 22.Nd5+= cd5 (worse is 22...ed4 23.Nb6 Qf7 24.Qf7 Kf7 25.Na8 Ra8 26.a4+/–) 23.Bb2 e4 (better is 23...Ra5!?+=) 24.Qd5 ef3 25.Qf3?? (better is 25.Ke1+=) 25...Qb5–+ 26.Ke1 Qb2 27.Qe4 Qe5 (27...Kf8!? 28.Rb1 Qa3 29.Rb7–+) 28.Qe5–/+ Be5 29.d4+= Bd6 30.Rg7 b5 31.Rb1 Rb8 32.a4 ba4–/+ 33.Rb8 Bb8 34.Kd2 a3 35.Kc2 Bd6 36.Kb3 Be7 37.f3 Kf8 38.Rg2 Rg8 39.Rg8 Kg8 40.e4 Kf7 41.f4 f5! 42.e5 Ke6 0–1. Schmalix,Walter – Hessler,Markus, Nittenau–ch 3rd, 2003.

6.d4 Nd7 7.Be2 e5 8.Nf3 Bd6 (8...e4 9.Ne5+=) 9.Nh4 (better is 9.de5!? Ne5 10.c4=) 9...Be6+= 10.Bg4 Ngf6 (10...ab4?! 11.Be6 fe6 12.Qh5 Kd8 13.cb4=) 11.Nf5 Bf8 12.Bh3 g6 (12...ab4?! 13.de5 bc3 14.Bc3–/+) 13.Ng3 Bh3 14.gh3 Bg7 15.Nd2 0–0 16.Nb3 ab4 17.ab4 ed4 18.Qd4 Ra1 19.Ba1 Qb5 20.Qd1 Ne5 21.Na5 Qa6 22.Rf1 Ra8 23.Nb3 Ne4 24.Qb1 (24.Ne4 de4 25.f4 ef3 26.c4–+) 24...Nf3 25.Kd1 Ng3 26.hg3 (26.Re1 Ne1 27.fg3–+) 26...Qf1 27.Kc2 Qe2 (27...Qe2 28.Kc1 Ra2 29.Qa2 Qa2–+) 0–1. Tanacs,Istvan (1660) – Follert,I (2020), Lakitelek HUN, Open, 2011.

6.d4 e6 7.Qa4 Ra7 8.b5 Nf6 9.Nd2 Nbd7 10.Ngf3 Bd6 11.Be2 0–0 12.0–0 Raa8 13.bc6 Qb2 (13...bc6 14.Ra2=+) 14.cd7= Qc3 15.Rfc1 Qb2 16.Bb5 Bc2 17.Qc2 (17.Rc2 Qa1) 17...Qb5 18.Ne5 Be5 19.de5 Nd7 20.Qc7 Rfd8 21.Rab1 Qd3–/+ 22.Nb3 b6 23.Nd4=+ Qa3 24.Rb3?? Qf8–+ 25.Rbc3 Qe8 26.Nc6 Rdc8 27.Qd6 Kh8 28.Ne7? Rc3 29.Rc3 Ne5! 30.Qb6 Qe7 31.Qa5 Qb7 32.Qc5 Nd7 0–1. Langguth – Kaschner, corr VI/VII ICCF–Cup, 1985.

6.d4 e6 7.Be2 =+.

6.d4 Nf6 7.Bd3 Bd3 8.Qd3 e6 9.Nd2 Qc7 10.Ngf3 Nbd7 11.h3 Bd6 12.0–0 Nb6 13.Qc2 0–0 14.c4 dc4 15.Nc4 ab4 16.Nd6 Qd6 17.Qb3 Na4 18.ab4 Nb2 19.Qb2 Nd5 20.b5 cb5 21.Qb5 Qb4 22.Qb4 Nb4 23.Rfb1 Ra1 24.Ra1 Nc6 25.Rb1 Rb8 26.Rb5 Kf8 27.Kf1 Ke7 28.Ke2 f6 29.Kd3 Kd6 30.g4 Nd8 31.Nd2 Ra8 32.Nc4 Ke7 33.Ra5 Ra5 34.Na5 Kd6 35.Kc4 b6 36.Nb3 Kc6 37.e4 b5 38.Kb4 Nb7 39.Na5 Na5 40.Ka5 g5 41.f3 e5 42.d5 Kc5 43.d6 Kd6 44.Kb5 Kd7 45.Kc5 Kc7 46.Kd5 Kd7 ½–½. Ruhle – Hummel, Wien 1996.

6.Nf3= Nd7 7.Nh4 Nh6 8.Nf5 Nf5 9.d4 =.

6.Nf3= e6 7.Be2 Nf6 8.0–0 Nbd7 (8...Bd6 9.Nd4=) 9.d4 (9.d3 e5=) 9...Be7 (9...ab4 10.cb4 Bd6 11.Nh4=) 10.Nbd2 0–0 (10...Qc7 11.Nh4=) 11.Nh4 Bg6 (11...Be4 12.f3 Bg6 13.Ng6 fg6 14.Qb3=) 12.Ng6 hg6 (12...fg6 13.Qb3=) 13.Qc2+= Qc7 14.Rfc1 (14.e4 e5=) 14...Nh7 (14...Bd6!?=) 15.b5+= f5 (15...Bd6 16.Nf3+=) 16.g3 (16.c4 Rac8+/–) 16...g5 (16...Rfc8 17.Qd1+/–) 17.f4 (better is 17.c4!?+/–) 17...gf4+= 18.ef4 g5 (18...Nhf6 19.bc6 bc6 20.c4+=) 19.fg5 Bg5 20.Rf1 (20.Re1 Be3 21.Kg2 f4+=) 20...Be3 (20...c5 21.dc5 Qc5 22.Kg2+=) 21.Kg2 Rf6 22.Rf3 Bh6 23.h4 Raf8 24.Rg1 Rg6 25.Kh3 Bg7 26.c4 cb5+= 27.c5 Ndf6 28.Bb5= Ne4 29.Nf1 b6 30.c6 Nhf6 31.Bc1 Nh5 32.Bb2 Bf6–/+ 33.Rg2 Qg7 34.Qd3 Bd8 35.a4 Bc7 36.Bc1 f4 37.g4+= Nef6?? 38.g5 Ne4+= 39.Nh2?? Qf7?? 40.Ng4+= Qf5 41.Kh2 Ng5?? 42.Nh6!! Rh6 43.Rg5 Ng7 44.Rf5 Rh4 45.Kg1 Rf5 46.Kf2 Rg5 47.Ke1 Rg1 48.Rf1 Rg3 49.Qe2 Kf7? 50.Qf2 Nf5 51.Rg1 f3+/– 52.Kd1 Rd4–/+ 53.Kc2 Rdg4?? 54.Rg3+= Rg3 55.Kb1 e5 56.Qh2 e4 57.Qh7 Ng7 58.Bb2 e3? 59.Bg7 Rg7 60.Qf5 Kg8 61.Qf3 Re7 62.Qd5 Kg7 63.Be2 Kf6 64.Kc2 Re5 65.Qf3 Ke6 66.Qg4 Kd5 67.Qd7 (67.Qd7 Kc5 68.Qc7+–; 67.Bf3 Kc5 68.Kc3 Rd5 69.Qc4 Kd6 70.Qd5 Ke7 71.Qg5 Ke8 72.Bh5 Kf8 73.Qf6 Kg8 74.Bf7 Kf8 75.Be6 Ke8 76.Bd7#) 1–0. Schwichtenberg,Juergen – Weschke,Wolfgang, 18sen.DSenEM(GrB) op, 2006.

6.Nf3 e6 7.Be2 Nf6 8.Nh4 Bg6 9.Ng6 hg6 10.Bf3 (10.d3 Bd6=) 10...Nbd7 11.Qc2 Ne5 12.Be2 Nc4 13.d3 Nb2 14.Qb2 Bd6 15.h3 g5 16.Rf1 e5 17.Nd2 Ke7 18.Nb3 ab4 19.ab4 d4 (19...Ra1 20.Qa1 Rh4 21.Nd2=) 20.Ra8 (20.ed4!? Nd5 21.de5 Bb4 22.cb4 Qb4 23.Qd2 Qb3 24.Qg5 Kd7 25.Rc1=) 20...Ra8 (20...dc3 A) 21.Qc3?? Bb4 (21...Ra8?! 22.Nc5–+) 22.Qd2 Ra8–+; B) 21.Qa1 Ra8 22.Qa8 Qb4 23.f4 c2 24.Kf2 Qb3 25.fg5–+) 21.ed4+= Nd5 22.de5 (22.Kd2 ed4 23.Nd4 Nc3 24.Nf5 Ke6 25.Kc3 Kf5+=) 22...Bb4 23.cb4 Qb4 24.Qd2 Qb3 25.Qg5 Kf8 26.f3 Nc3?? (26...Qb4 27.Kf2 Re8+=) 27.Kf2= Ne2 28.Ke2 Ra2 29.Ke3 Qb6 30.Kf4 Qd4 31.Kg3 Qd3 32.Rf2 Rf2+= 33.Kf2 b5 34.Qf4 Qc2 35.Kg3 Qg6 36.Kh2 c5–/+ 37.Qe3 Qc6 38.Qg5 Qd5 39.Qf5 g6 40.Qf6 c4–+ 41.f4 b4 42.Qh8 Ke7 43.Qf6 Kd7 44.e6? Qe6 45.Qd4 Kc6 46.Kg3 Kb5 47.Qa7 Qd5 48.Qb8 Ka4 49.Qa7 Kb3 50.Qe3 Qd3 (50...Qd3 51.Qd3 cd3–+) 0–1. Alexandr,Petr (1665) – Stanek,Stanislav (1915), Ostrava CZE, Ostravsky Konik, 2014.

6.Nf3= e6 7.Nh4 Bg6 =.

6.Nf3 Nf6 7.Be2 e6 8.0–0 Bd6 9.d3 Qc7 10.Nbd2 Nbd7 11.Nb3 ab4 12.ab4 0–0 13.Nbd4 Bg6 14.Qd2 e5 15.Nc2 e4 16.Nh4? (better is 16.de4!? de4 17.Nh4 Bh2 18.Kh1–/+) 16...ed3–+ 17.Bd3 Bd3 18.Qd3 Ne5 19.Qe2 Nc4 20.Nd4 Bh2 21.Kh1 Ne4 22.Ra8 Ra8 23.Nhf5 g6 24.Nh6 Kg7 25.Ng4 Bd6 26.Ra1 Ra1 27.Ba1 h5 28.Kg1 Qb8 29.f4 (29.Nc2 hg4 30.Qg4 Bh2 31.Kf1 Qa8–+) 29...hg4 30.Qg4 Ne3 31.Qf3 Nc4 32.Qg4 Bf4 0–1. Wurm,Tamas – Niewold,Jaap (1685), IECG, 2006.

6.Nf3 h6 7.d4 (7.Be2 Nd7=) 7...Nf6 (7...ab4 8.cb4 e6 9.Bd3=) 8.Bd3 (8.Nbd2 ab4 9.ab4 Ra1 10.Qa1 e6=) 8...Bd3 9.Qd3 e6 10.Nbd2 (10.0–0 ab4 11.cb4 Nbd7=) 10...ab4+= 11.cb4 Bd6 12.0–0 0–0 (12...Qa6 13.Qc2+=) 13.Rfe1 (13.Nb3 Nbd7=) 13...Nbd7+= 14.h3 (14.Rac1 Rfd8+=) 14...Qc7 15.Rac1 e5 (15...Rfd8 16.Red1+=) 16.e4 (16.de5 Ne5 17.Be5 Be5 18.Ne5 Qe5=) 16...ed4 (16...Ne4 17.de5 Ne5 18.Be5 Be5 19.Ne5 Qe5 20.f3=) 17.Bd4 (17.Qd4 c5 18.Qd3 de4 19.Ne4 Ne4 20.Qe4 Rfd8+=) 17...de4 (17...Rfe8 18.ed5 Nd5 19.Nc4=) 18.Ne4+= Bf4 (18...Ne4 19.Re4 Rfe8 20.Re8 Re8 21.Qc3=) 19.Rcd1 Ne5? (19...Nd5!?+=) 20.Nf6 (20.Ne5 Be5 21.Nf6 Bf6 22.Bf6 gf6+–) 20...gf6+/– 21.Ne5 Be5?? 22.Be5 fe5+/– 23.Qg3 Kh7 24.Qe5 Qe5+= 25.Re5 Ra3 26.Re7 b5 27.Rc7 Rb3 28.Rd4 Rc3 29.Rd6 Rc4 30.Rcc6 Rb4 31.Rh6 Kg7 32.Rh5 Rb8 33.Rf5 Rb7 34.Rg5 Kf8 35.Re5 Rb1= 36.Kh2 Kg7 37.Rg5+= Kf8 38.g3 b4= 39.Rcc5 ½–½. Groebner,K – Rudhart,M, Ditzingen (year?).

5.e3 Nf6

6.Nf3 Bf5 7.Qa4 Nbd7 8.d4 Qc7 9.c4 dc4 10.ba5 b5 11.ab6 Nb6 12.Qd1 Na4 13.Bc3 Bb1 14.Qb1 Nc3 15.Qc2 Nce4 16.Bc4 e6 17.0–0 Ra3 18.Bb5 Rc3 19.Ra8 Ke7 20.Qa2 Nd7 21.Ra7 Qd6 22.Ne5 Nef6 23.Bc4 g6 24.Qa4 Bh6 25.Nc6 Kf8 26.Qa5 Rc4 27.Ne5 Rc8 28.Rb1 Kg7 29.Qa4 Rc7 30.Ra6 Rb8 31.Ra1 Qb4 0–1. Wessel – J Meyer, 1994.

6.Nf3 Bg4 7.Be2 Nbd7 8.d4 e6 9.Nbd2 Bd6 10.c4 Qd8 11.c5 Bc7 12.0–0 0–0 13.b5 cb5 14.Bb5 Qe7 15.Rc1 e5 16.de5 Be5 17.Be5 Ne5 18.Be2 Rfc8 19.Ne5 Be2 20.Qe2 Qe5 21.Nf3 Qe7 22.Qb5 ½–½. Marchant – Brodie, 1973. +

4.a3 e5

5.Qb3 Nf6 6.e3 d5 7.c4 ab4 8.ab4 Ra1 9.Ba1 Bb4 (9...Nbd7!?–/+) 10.Be5+= Nbd7 11.Bd4 Bc5 12.Qa2? (better is 12.Qb6 Bb6 13.cd5 Bd4 14.dc6=) 12...Bd4–+ 13.Qa8?? (better is 13.ed4 Qd4 14.Nf3–+) 13...Qb1 14.Ke2 0–0 15.ed4 Re8 16.Kf3 Qe4 17.Kg3 Qg4 0–1. Kuehnel,Ann Kathrin – Van Amelsvoort,Marie A, Niedersachsen–ch U16/18 Girls, 2006.

5.Qc2 d5 6.e3 Bd6+= 7.d3 Nf6 8.Nd2 0–0 9.Be2 Re8 10.e4 (10.Ngf3 Be6+=) 10...Nbd7 (10...ab4 11.cb4 c5 12.ed5 cb4 13.Qb3–/+) 11.Ngf3 Nf8 12.0–0 Ng6 13.Nb3 a4 14.Nc1 Nf4 15.Bd1 (15.c4 Bc7–/+) 15...Bg4 16.c4 Qd8 17.c5 Bc7 18.Nd2 Qd7 19.f3 Be6 20.Ne2 Ng6 21.Nc3 b5 22.Ne2 (22.cb6 Bb6 23.Kh1 Bd4–/+) 22...d4 23.Rf2 Nh5 24.Nf1 Rf8 (24...Bd8 25.Nfg3 Nhf4 26.Nf4 Nf4 27.Ne2–/+) 25.Nfg3 Nhf4 26.Bc1 Bd8 (26...h6 27.Nf4 ef4 28.Ne2–/+) 27.Nf4+= ef4 28.Ne2 Bg5 29.Bb2 (29.Qd2 h5+=) 29...Bf6 30.Bc1 (30.Qd2 Be5–/+) 30...Be5 31.Bd2 (31.g3 fg3 32.hg3 f5–/+) 31...f5 32.Qc1 Qc7 33.Bc2 Rf6 34.Bb1 (34.Qb2 Rd8–/+) 34...Raf8 (34...fe4 35.fe4 Raf8 36.Qb2–+) 35.Ba2 (35.ef5 Bf5 36.Qb2 Rd8–/+) 35...Ba2–+ 36.Ra2? (better is 36.ef5 Bf7 37.fg6 Bg6 38.Qc2–+) 36...fe4 37.de4 d3 38.Nc3 Bd4 (38...Qf7 39.Rb2–+) 39.Qb1? (39.Nd1 Qf7 40.Bc3 Qc4–+ (40...Bf2?! 41.Rf2 Re6 42.Nb2–/+)) 39...Rd8 (better is 39...Bf2 40.Kf2 Ne5 41.Kg1–+) 40.e5 (40.Nd1–+) 40...Bf2 41.Kf2 Qe5 42.Ne4 Qd4 43.Kf1 Re6 44.Bc3 (44.Qa1 Re4 45.fe4 Qe4 46.Qe1–+) 44...Qc4 45.Bd2 Nh4 46.Kg1 (46.Nd6 Qd5 47.Ne4–+) 46...Rg6 47.Kh1 Rg2 48.Rb2 Re2 49.Nd6 Qd5 0–1. Melderis,Uldis (1975) – Morozov,Egor (2175), Golden Sands BUL, 3rd Grand Europe Open, 2014.

5.Qc2 d5 6.e4 +=.

5.Qc2 d5 6.Nf3 Nd7 +=.

5.Qc2 Nf6 6.e3 (6.Nf3 e4 7.Ng5 d5+=) 6...d5 7.Nf3 (7.c4 ab4 8.Be5 ba3 9.Na3 Ba3 10.Bb8 Qd8=) 7...Bd6 (7...e4!? 8.Nd4 Bd6+=) 8.c4= ab4 9.ab4 (9.Be5 Be5 10.Ne5 Be6=) 9...Ra1 10.Ba1 Qb4 (10...Na6 11.Be5 Be5 12.Ne5 Nb4 13.Qa4=) 11.Ne5 (11.Bc3 Qb6 12.Be5 Be5 13.Ne5 Nbd7=) 11...Be5 (11...Be6 12.Bc3 Qb6 13.cd5 Bd5 14.Nc4 Bc4 15.Bc4=) 12.Be5+= Nbd7 13.Bc3 (13.Bb2 dc4 14.Bc4 b5+=) 13...Qd6 14.d4 (14.Bf6 Nf6 15.c5 Qc7+=) 14....0–0 (14...dc4 15.Bc4 Nb6 16.Bd3+=) ½–½. Kaszynski,Bartlomiej – Kaczorowski,Piotr, Koszalin Poland, 1998.

5.d4 ed4 6.Nd2 d5 +=.

5.e3 Nf6 6.d4 e4 7.Qc2 d5 8.Nd2 ab4 9.cb4 Bd6 10.Ne2 0–0 11.Ng3 Ng4 12.Be2 Qd8 13.0–0 h5 (13...Qh4 14.Bg4 Bg4 15.Nb3–/+) 14.h3 (14.Rfc1!?+=) 14...Ne3!–/+ 15.Qb3? (15.fe3 Qg5) 15...Nf1–+ 16.Ndf1 h4 17.Nh1 Qg5 18.Ra2 (18.Re1 Be6–+) 18...f5 19.f3 Rf6 20.Bc3 (20.Nf2 Rg6 21.Ne3 Bf4–+) 20...e3 21.Be1 f4 22.Kh2 Nd7 23.Bd3 Nb6 24.Qc2 (24.b5 Nd7–+) 24...Bf5 25.Bf5 Qf5 26.Qe2 g5 27.Bc3 Nc4 28.a4 Qb1 29.Ra1 (29.b5 Qb3 30.Rc2 Ra4 31.bc6 bc6–+) 29...Qb3 30.Qe1 (30.Be1 Ra4 31.Ra4 Qa4–+) 30...Na3 31.Qc1 (31.Rc1 Ra4 32.Qe2 Nb5–+) 31...Ra4 32.Kg1 Bb4 33.Bb4 Qb4 34.Ne3 Qd4 (34...Qd4 35.Ra3 Ra3 36.Qa3 Qe3 37.Qe3 fe3–+) 0–1. Baer,Cy (1895) – Klawitter,Rolf (2110), RSS4D easy–41, 2007.

5.e3 Nf6 6.d4 e4 7.c4 d6 =.

5.e3 Nf6 6.d4 e4 7.g3 d5 8.Bg2 Bg4 9.Ne2 ab4 10.cb4 h5 11.0–0 h4 12.h3 (12.Nbc3!?–/+) 12...hg3 13.hg4 gf2 14.Rf2 Ng4 15.Qe1 Bd6 16.Nf4 (16.Rf4 Bf4 17.ef4 Ne3–+) 16...g5 17.Nh3 Bh2 18.Kf1 Qb5 19.Re2 Qd3?? (19...Ne3 20.Kf2 Ng4 21.Kf1 Qd3 22.Ng5 Ne3 23.Kf2 Nd1 24.Kf1 Bg3–/+ (worse is 24...Nb2 25.Qd2 Rg8 26.Nf3–+)) 20.Nf2?? Ne3# 0–1. Baer,Cy (1895) – Klawitter,Rolf (2110), RSS5E easy–35, 2007.

5.e3 Nf6 6.Be2 Be7 (6...ab4?! 7.cb4 e4 8.f3+=) 7.d4 ed4 8.Qd4 c5 9.Qc4 Nc6 10.b5 d5 11.Qf4 a4 (better is 11...Ne4!? 12.c4 g5–+) 12.Nd2+= Nd8 13.c4 Ne6 14.Qg3 d4 15.f4 (better is 15.Ngf3!?+=) 15...0–0 16.e4 Qa5 17.Bd3?? (better is 17.Bf3–/+) 17...Nh5–+ 18.Qf3 Nhf4 19.Nh3 Nh3 20.gh3 Bh4 21.Kd1 Bg5 22.Qf2 Nf4 23.Bf1 Bh3 (better is 23...Nh3!? 24.Bh3 Be3 25.Qe2 Bh3 26.Nf1–+) 24.Qg3 Bf1 25.Rf1 Ne6 26.Rf2 (26.Nf3 Bf4 27.Qe1 Qc7–+) 26...Bd2 (better is 26...Rad8 27.Nf1–+) 27.Rd2 Rae8 28.Kc2 Qc7 (better is 28...f6 29.h4 b6–+) 29.Qg2? (29.Qc7 Nc7 30.Re1–+) 29...Qe5 30.Rg1 (30.Rf1 Nf4 31.Qf3 Qe4 32.Qe4 Re4–+) 30...Nf4 31.Qg4 (31.Qg3–+) 31...Qe4 32.Kc1 Ng6 (32...Ne2 33.Re2 Qg4 34.Rg4 Re2 35.Bd4 cd4 36.Rd4–+) 33.Qd7 (33.Qe4 Re4 34.Rdg2–+) 33...Ne5 34.Qh3 Nf3 (34...Nf3 35.Qg4 Ng1 36.Qg1 Qe6–+) 0–1. Ioan,Cesar – Sava,Christiansen (2270), Petre Seimeanu Memorial, 2002.

5.e4 d5 6.d3 Nf6 7.Nd2 Bc5 8.Qe2 ab4 9.ab4 Ra1 10.Ba1 Qa7 11.Bb2 Qa2 12.bc5 Qb2 13.c4 Qc1 14.Qd1 Qd1 15.Kd1 de4 16.Ne4 Ne4 17.de4 Ke7 18.g3 Na6 19.Be2 Nc5 20.Nf3 Ne4 21.Ke1 f6 22.Nd2 Nc5 23.f3 Rd8 24.Kf2 Rd2 (25.Ke3 Ra2–+) 0–1. Moderlak,Stephan – Kagel,Fred, 10 years 4a TSV M/v, 1999.

5.e4 Nf6 6.Qc2 d5 7.d3 Bd6 8.Nf3 0–0 9.Nbd2 ab4 10.cb4 Nbd7 11.Be2 Re8 12.0–0 Qc7 13.Nb3 Nf8 14.ed5 Nd5 15.g3 Bf5 16.Nh4 Bh3 17.Rfe1 Nd7 18.Bf1 Bf1 19.Kf1 N7f6 20.Nf5 Bf8 (21.Kg2 Qd7–/+) 0–1. FR (1660) – Nonnenmacher,Thomas (1950), BdF, 2004.

5.Nf3 e4 6.Nd4 c5 7.Nc2 Nc6 8.Qc1 d5–/+ 9.g3 Nf6 10.Bg2 Bg4 11.h3 Bf5 12.0–0 d4 13.cd4 cd4 14.b5 Qb5 15.Nd4 Nd4 16.Bd4 Qe2 17.Nc3 Qd3 18.Bf6–/+ gf6 19.Re1 Rc8 20.g4 Be6= 21.Bf1 Qd4=+ 22.Qb1 Bc5 23.Ne4= Ba7 24.Qb7+/– 0–0 25.Nf6 Kh8 26.Qf3 Qd2 27.Re5 Rc2 Now all is on f2 28.Ne4 (28...Qh6 29.Ra5+/–) 1–0. Baez Morales,Dionisio – Bacallado,H, Tenerife–chT, 1989.

5.Nf3 e4 6.Ne5 =.

5.e3 d5

6.b5 cb5 7.Qb3 Bd7 8.Qd5 (8.Nf3 e4 9.Ne5 Nf6+=) 8...Bd6–/+ 9.d4 Nf6 10.Qb3 a4 11.Qc2 0–0 (11...ed4!? 12.cd4 0–0–/+) 12.de5+= Be5 13.Nf3 Nc6 14.Bd3 Bg4 (14...Be6 15.Nbd2+=) 15.Nbd2 Rfd8 16.0–0 Bh5 17.Rab1 Qc5 18.Ne4 Ne4 19.Be4 b4?? (better is 19...Bg6+=) 20.ab4 (better is 20.Bh7 Kh8 21.cb4 (21.Ne5?! Ne5 22.cb4 Nf3 23.Kh1 Qc2 24.Bc2 Nd2=) 21...Qc2 22.Bc2 Bf3 23.gf3+–) 20...Nb4?? (better is 20...Qe7 21.b5 Bf3 22.Bf3 Na5 23.Qa4 Qc7+/–) 21.Bh7+– (worse is 21.cb4 Qc2 22.Bc2 Bb2 23.Rb2 Bf3 24.gf3 b5+–) 21...Kf8 22.cb4 Qc2 23.Bc2 Bb2 24.Rb2 b5 (24...Bf3 25.gf3 Rd2+–) 25.Nd4 Ra6 (25...Bg4 26.Be4 Rac8 27.Nb5+–) 26.Bd3 Rb6 27.Ra1 Bg6 (27...Rd5 28.f3+–) 28.Bg6 (28.Bg6 fg6 29.Rc2+–) 1–0. Rayetzky – Coltharp, email CTON, 1996.

6.Qc2 Bd6 7.c4 ab4 8.cd5 =+.

6.Qc2 Nf6 7.Nf3 Nbd7 8.Be2 Bd6 9.a4 ab4–/+ 10.cb4 Qb4 11.Ba3 Qe4 12.Qe4–/+ Ne4 13.Bd6 Nd6 14.0–0 b5 15.Rc1 Bb7 16.d4 e4 17.Nfd2–/+ Ke7 18.Nc3 b4 19.Nd1 Ba6 20.Kf1 Be2 21.Ke2 Ra6 22.Nb2 f5 23.Rc2 Nb5 24.Nb3 White intends a5 24...Nc3 25.Ke1 Rc8 26.a5 c5–+ 27.Nc5 Nc5 28.dc5 Rc5 29.Nd1 Rca5 30.Ra5 Ra5 31.Nc3 Rc5 32.Nd5–/+ Rd5 33.Rc7 Rd7 34.Rc5 b3 35.Rb5–/+ Rd3 36.Rf5 Kd6 37.Rb5 Kc6 38.Rb8=+ Kc5 39.Ke2 Kc4 40.f3 Kc3 41.fe4? Rd2–+ Black plans b2 42.Kf3 b2 43.Rc8 Kb3 44.e5 b1Q 45.Rb8 Kc2 46.Rb1 Kb1 47.Ke4 Rg2 48.e6 Ra2 49.Ke5 Ra8 50.e4 Kc2 51.Kd6 Kd3 52.e5 Ke4 53.e7 Kf5 54.e6?? Kf6 (55.h3 Ra6 56.Kd7 Ra7 57.Kd6 Re7–+) 0–1. Licciardello,Salvatore (2110) – Chatalbashev,Boris (2515), Giardini Naxos, 2001.

6.c4 Nd7 =.

6.Nf3 e4 7.Ne5 Nh6 8.Qh5 –/+.

6.Nf3 Bg4 7.Be2 (7.c4 Nd7 8.cd5 ab4 9.dc6 Qc6 10.ab4 Ra1 11.Ba1 Bb4=) 7...Bf3 (7...Nd7 8.d4 e4 9.Ne5 Be2 10.Qe2+=) 8.Bf3= e4 9.Be2 Nf6 10.d3 Bd6 11.Nd2 (11.de4 Ne4 12.Nd2 Nd2 13.Qd2+= (worse is 13.Kd2 0–0–/+)) 11...Nbd7 (better is 11...ed3!? 12.Bd3 Nbd7+=) 12.de4+= de4?? (12...0–0 13.ed5 cd5 14.0–0+/–) 13.Qc2 (better is 13.Nc4 Qc7 14.Nd6 Ke7 15.Nf5 Kf8 16.c4+–) 13...0–0+/– 14.Rd1 Ne5 (14...Qc7!? 15.Ne4 Ne4 16.Qe4 Nf6+/–) 15.Ne4 Ne4 16.Qe4 Qc7 17.g3 Rfe8 18.Qd4 (18.0–0!?+/–) 18...Rad8+= 19.c4?? (better is 19.Qh4+=) 19...Bb4!–+ 20.Kf1? Rd4 21.ed4 Ba3! 22.Ba3 Nd7 23.f4 b5! 24.cb5 cb5 25.Bb5 Qb7 26.Bd7 Qh1 27.Kf2 Qh2 28.Kf3 Qe2# 0–1. Buemi,F – Alaimo,Riccardo, Belpasso, 1992.

4.a3 e6

5.e3 d5 6.d4 Nf6 7.Bd3 (7.Nf3 c5=) 7...Nbd7 (7...c5 8.Nd2+=) 8.Nf3= Bd6 9.Nbd2 e5 (9...0–0 10.c4 Be7 11.0–0=) 10.de5 (better is 10.c4!? e4 11.c5+=) 10...Ne5= 11.Ne5 Be5 12.0–0 Bg4 13.Qc2 0–0 14.c4 Bb2 15.c5 Qc7 16.Qb2 b5 17.h3 Bh5 18.Qd4 Ra7 19.g4 (19.a4 ba4 20.ba5 Ra5 21.Ra4 Rfa8 22.Ra5 Ra5=) 19...Bg6+= 20.Bg6 hg6 21.g5 Nd7 22.f4 Rfa8 23.Nb3 ab4 24.ab4 Ra1 25.Ra1 Ra1 26.Qa1= f6 27.h4 f5? 28.Nd4 Nb8 29.Qa8+– Kh7 30.Kf2 Qc8 ½–½. Baer,Cy (1895) – Langschmidt,Dirk (2015), RSS7E easy–50, 2007.

5.e3 d5 6.Nf3 Nf6 7.Qc2 Nbd7 8.d4 Ne4 9.Bd3 f5 10.Nbd2 Be7 11.Nb3 ½–½. Kukel,Imre – Tornai,Imre, Budapest, 2000.

5.Nf3 c5 6.e3 ab4 7.ab4 Ra1 8.Ba1 cb4 9.Qb3 f6 10.Be2 Qa5 11.Bb2 Nc6 12.0–0 b5 13.Rc1 bc3 14.Bc3 (b5 gets attention) 14...b4=+ 15.Bd4 e5 16.Bb2= Bd6 17.Nh4 Nge7 18.Bf3 Qb5 19.d4 ed4–/+ 20.ed4 Nd4?? 21.Bd4 (21...Qg5 22.Qe3+/–) 1–0. tschulz – Sanji, internet, 2005.

5.Nf3 d5 6.d3 =.

4.a3 Nf6

5.Qc2 d5 6.d4 g6 7.Nd2 Bf5 8.Qc1 Bg7 9.Ngf3 Nbd7 10.Nh4 Be6 11.e3 0–0 12.Bd3 Qc7 13.Nhf3 Bg4 14.h3 Bf3 15.Nf3 h6 16.0–0 b5 17.Qc2 a4 18.Rae1 e6 19.Nd2 Nh7 20.e4 f5 21.e5 Ng5 22.Bc1 Nb6 23.f3 Qe7 24.Kh2 Kf7 25.f4 Ne4 26.Nf3 Ke8 27.Be3 Kd7 28.Be4 fe4 29.Nd2 h5 30.Qd1 Qf7 31.Qe2 Rh8 32.h4 Qf5 33.g3 Bf8 34.Rg1 Be7 35.Ref1 Raf8 36.Re1 Kc7 37.Qg2 Rh7 38.Qe2 Qf7 39.Ref1 Qe8 40.Re1 Rhf7 41.Ref1 Qd8 42.Kh3 Rh7 43.Qg2 Qe8 44.Qe2 Bd8 45.Qg2 Nc8 46.Qe2 Ne7 47.Rh1 Nf5 48.Rfg1 Be7 49.Nf1 Rg8 50.Bd2 Kb8 51.Ne3 Qd8 52.Nf5 gf5 53.Be3 Rg4 54.Bf2 Rhg7 55.Qe3 Rg8 56.Qe1 R8g7 57.Qe3 Qe8 58.Qe1 Qg6 59.Qe2? Qh6 60.Be3–/+ R4g6 61.Qf2 Rg8 62.Qe1 Qg7 63.Qf2 Qf7 64.Qe1 Bd8 65.Bf2 Rg4 66.Qe3 Qg7 67.Qe1 Be7 68.Qe3 Qh8 69.Qe1 Bf8 70.Qe3 Bh6 71.Qe1 Qg7 72.Qe3? Qf7 73.Qe1–/+ Qg6 74.Be3 Bf8 75.Bf2 Be7 76.Qe3 Kc7 77.Qe1 Bh4 78.gh4 Rg2 79.Qe2 0–1. Ivanov,Daniel (1755) – Asparuhov,Parvan (2115), Kesarovski Georgiev Memorial 7th, 2008.

5.Qc2 d5 6.e3 g6 7.Nf3 Bf5 (7...Bg7 8.d4+=) 8.d3 Bg7 9.Nd4 (9.Nbd2 0–0+=) 9...Bc8 (9...Bd7 10.Nb3+=) 10.Nd2 0–0 11.Rb1 (11.Be2 ab4 12.cb4 Na6=) 11...Re8+= 12.Be2 e5 13.N4b3 a4 14.Nc5 Qa7 15.Bd1 Nbd7 16.Nd7 Bd7 17.0–0 b5 18.Rc1 (18.Bf3 Rad8+=) 18...e4–/+ 19.d4 (19.Be2 Bf5–/+) 19...Qc7 20.h3 Qc8 21.Kh2 Bf8 22.Rh1 (22.Kg1 Qc7–/+) 22...Bd6 23.Kg1 Rf8 24.Be2 Ne8 25.Rf1 Ng7 26.Qd1 f5 (26...Qc7 27.Qc2–+) 27.Bc1 (27.g3!?–/+) 27...Qd8–+ 28.h4 Qc7 (28...f4 29.ef4 Rf4 30.g3–+) 29.Re1 (29.h5 Ne6–/+) 29...Rf7 30.Nf1 Raf8 31.g3 h6 32.f4? (better is 32.Bb2–/+) 32...ef3!–+ 33.Bf3 Bg3 34.Re2 f4 35.e4 de4 36.Re4 Nf5 37.h5 g5 38.Re5 Re8 39.Re8 Be8 40.Qd3 Bd7 41.Nd2 (41.Bg4 Qc8 42.Bf3 Be1–+) 41...Nh4 42.Be4 Re7 43.Nf3 (43.Nf1 Qd6 44.Nd2–+) 43...Nf3 44.Bf3 g4 45.Bd1 (45.Bg2 Re1 46.Bf1 Qd6–+) 45...Re1 46.Kg2 f3 47.Bf3 gf3 48.Qf3 Rh1 49.Kh1 Be6 50.Qf6 (50.Kg1 Bd5 51.Qg4 Qg7 52.Qg7 Kg7 53.Kf1–+) 50...Bd5 51.Kg1 Bh2 52.Kf1 Bc4 0–1. Raudsepp,Teet – Soskov,Vjatsheslav (2285), Viljandi EST, Ilmar Raud Mem, 2014.

5.e3 e5 6.c4 ab4 7.Be5 ba3 8.Bb8 Rb8 9.Na3 Bc5 10.Nc2 d5 11.Nf3 Bg4 12.d4 Bf3 13.gf3 Be7 14.Qb1 Qc7 15.c5 0–0 16.Bd3 b6 (withdraw) 0–1. Silva Junior – Blaszczak, corr 3GMM–59 1995–96.

5.e3 e5 6.d4 ed4 7.cd4 ab4 8.Qb3 d5 –/+.

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

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

5.Nf3 Nc6 6.e3 e6 7.b5 Ne7 8.c4 Neg8 9.d4 a6 10.a4 d5 11.Nc3 Bd6 12.a5 Qd8 13.b6 cd4 14.Nd4 Bb4 15.Qa4 Bd7 16.Qb4 Ne7 17.Ba3 Nc8 18.Bd3 e5 19.Nf5 Bf5 20.Bf5 d4 21.Qa4 Nd7 22.Nd5 Ncb6 23.Nb6 1–0. Kucharkowski – Ehrlich, Freital 1988.

5.Nf3 d5 =.

5.Nf3 d6 6.e3 Bg4 7.Be2 Nbd7 8.0–0 e5 9.Qb3 ab4 10.ab4? Ra1= 11.Ba1 e4 12.Nd4 Be2 13.Ne2 d5?? 14.Na3 Bd6 15.Nc2 Qc7 16.h3 Ne5 17.Ncd4 0–0 18.Nf5 Qd7 19.Ned4 Ra8 20.Nd6 Qd6 21.Nf5 Qd7 (22.Nd4 Nd3–/+) 0–1. yaunootz – pierre (1890), internet, 2006.

5.Nf3 d6 6.e3 Bg4 7.Be2 Nbd7 8.0–0 e5 9.h3 Bf5 10.Nh4 Be6 11.Kh2 Be7 12.f4 Nd5 13.Qe1 ef4 14.ef4 Qd8 15.g3 Bh4 16.gh4 Ne7 17.h5 Nf5 18.Bg4 0–0 19.Qe4 Nf6 20.Qg2 Bd5 21.Qg1 Ng4–+ (22.Qg4 Re8–+) 0–1. Wartig,Wolfgang – Schreyer,Werner, corr ICCF Cup, 1989.

5.Nf3 d6 6.g3 c5 7.Qb3 Nc6 8.Ng5 d5–/+ 9.Qa4 Bd7 10.Ra2?? Nb4–+ 11.ab4 Ba4 12.Ra4 e6 13.Bh3 Ra6 14.0–0 ab4 15.Ra6 Qa6 16.cb4 Qe2 17.bc5 h6 (18.Ne6 fe6–+) 0–1. kostovist (1640) – Garfield85 (1760), internet, 2006.

5.Nf3 d6 6.g3 e5 7.Bg2 =+.

5.Nf3 Qd8 6.c4 ab4 7.ab4 Na6 8.b5 cb5 9.cb5 Nc7 10.Ra8 Na8 11.Bf6 ef6 12.Qb3 Bc5 13.e3 0–0 14.d4 Bd6 15.Bc4 Nb6 16.Bd3 Re8 17.Qc2 Bf4 (Better is 17...Bb4!? 18.Nbd2 g6+=) 18.Bh7 Kf8 19.0–0 Bd6 20.Nh4 Nd5 (20...f5 21.g3 g6 22.Ng6 Kg7 23.Ne5 Be5 24.de5 Kh7 25.Qf5 Kg7 26.Qg4 Kf8 27.Qb4 Kg8 28.Qf4=) 21.Nd2 Qe7? 22.Nf5 Qe6 23.Nc4 Bb4 24.Ng3 Qg4? 25.Bf5 Qg5 26.Ra1 Kg8 27.Ra8 Bc3?? 28.Nd6 Ne3 29.fe3 Qe3 30.Qf2 Bd4 31.Qe3 Be3 32.Kf1 Re7 33.Rc8 Re8 34.Re8# 1–0. guest1 – babylyub, ICS unrated blitz match, 1998.

5.d3 d5=+

6.Nd2 c5 7.Rb1 ab4=+ 8.cb4 cb4 9.ab4 e6 10.Bc3 Bd6 11.Qb3 d4 12.Nc4+= Qb5?? 13.Bd2 Nd5?? Increasing the pressure on the isolated pawn on b4 14.Nf3 Nb4?? 15.e3 Qd5 16.Be2 b5?? 17.Nb6 Qb3–/+ 18.Rb3 Ra1 19.Bd1 Bb7?? 20.ed4?? Nc2–+ (21.Ke2 Bf3 22.Kf3 Nd4 23.Kg4 Nb3–+) 0–1. Valenta,Vit – Dumitrescu,Dragos, Marianske Lazne op, 2003.

6.Nd2 e5 7.e4 Be6 8.Rb1 ab4–/+ 9.cb4 Nbd7 10.Ngf3=+ h6 11.Be2 Bd6=+ 12.0–0 0–0 13.Qc2 Qc7 14.h3 Nh5 15.d4 Nf4 16.Bd1 f5=+ 17.de5 Ne5 18.Ne5 Be5 19.ed5 Bd5 20.Bf3 Bb2 21.Qb2 Rfd8 22.Rfd1 Qf7 23.Qe5 Ng6 24.Qc3 Nh4 25.Re1 Qg6=+ 26.g3 Nf3 27.Nf3 Be4 28.Nh4 Qh5–/+ 29.Ra1 Kh7 30.Kh2 Rd3 31.Qe5–/+ Re8 32.Qb2 Red8 33.Qe5 R8d5 34.Qc7 Rd7 35.Qe5 R3d5 36.Qc3 Rd2 37.Qc5? Rc2 38.Qe5 Rd5 39.Qf4 Rdd2 40.Rf1 Qf7 41.Ng2–/+ g5 42.Qe3 Rd3 43.Qb6 f4 44.g4 Bg2 45.Kg2–/+ Qd5 46.Kh2 Qf3 47.Qb7 Kg6 (48.Qc6 Rc6–+) 0–1. Valenta,Vit (2230) – Vavrak,Peter (2410), Open Tatry, 2002.

6.Nd2 e5 7.Ngf3 Bd6 8.e3 =+.

6.Nf3 Nbd7 =+.

6.Nf3 Bf5 7.Qc1 Ng4 8.e3 Nd7 9.Be2 e5 10.0–0 Be7 11.h3 Ngf6 12.Nbd2 0–0 13.Nb3 (White gets the initiative) 13...a4 14.Nbd2 Bd6 15.c4 Qa7? (15...dc4 16.Nc4; 15...Qc7 16.cd5) 16.e4 de4 17.de4 Ne4?? (Better is 17...Be4 18.Ne4 Ne4=) 18.Ne4+– Be4 19.Rd1 (19...Qb8 20.c5+–; 19...c5 20.Qd2) 1–0. Grund,Karl – Poschmann,Hans, corr, 1981.

5.d4 d5

6.Nd2 Bf5 7.Ngf3 Nbd7 8.Nh4 Bg4 9.Qc2 e6 10.h3 Bh5 11.e3 Be7 12.Bd3 0–0 13.0–0 Ne4 14.Nhf3 (< 14.Ne4 de4 (< 14...Bh4 15.Nc5 Nf6 16.ba5 Ra5 17.c4+=) 15.Be4 Bh4 16.Bh7 Kh8–/+; < 14.Be4 de4 15.Qe4 Qd8+=) 14...f5 15.Rfb1 (15.Ne4? fe4 (15...de4?! 16.Bc4=) 16.Be4 de4 17.Qe4 Rf6–+) 15...ab4 16.cb4 Kh8 17.Bc3 (17.Ne4? fe4 18.Be4 de4 19.Qe4 Bf3 20.Qe6 Qd8 21.gf3 Nb6–+) 17...Rg8 (18.a4 Qc7=) =. Andronache,Daniel – Burijovich,Liliana (1815), Internet Section, 2003.

6.e3 Bf5 7.Nf3 Nbd7 8.Nh4 Bg6 9.Ng6 hg6 10.Nd2 e5 11.de5 Ne5 12.Be2 Bd6 13.Nb3 a4 14.Nd4 Qc7 15.f4 Ned7 16.c4 0–0 17.cd5 Nd5 18.Nb5 cb5 19.Qd5 Rad8 20.Bb5 Nf6 21.Qf3 Nd5 22.Ba4 Nc3 23.Rc1 Bb4 24.ab4 Rd3 25.Bb5 Qb6 1–0. Machete99 – guest262, ICC, 2002.

6.Nd2 e5

7.e3 ab4 8.ab4 (8.de5 ba3 9.Ba3 Ba3 10.ef6 gf6 11.Qc2 Ra7 12.Ngf3 Bd6 13.Rb1 Qa5+=) 8...Ra1 9.Qa1 ed4 (9...e4 10.Qa5 Qa5 11.ba5 Bd6 12.Ne2 Be6 13.Nf4 Bf5=) 10.ed4 Bd6 11.Be2 (11.Qa5 Qd8 12.Qd8 Kd8 13.Bd3 b6+=) 11...Qd8 (11...Kd8 12.Ngf3 Re8 13.Qd1 Nh5=) 12.Ngf3 0–0 13.0–0 Bf5 +=.

7.e3 ed4 8.ed4 ab4 9.ab4 Ra1 10.Qa1 Bd6 11.Bd3 (11.Qa5 Qd8 12.Qd8 Kd8 13.Bd3 Re8+=) 11...0–0 (11...Qc7 12.Ne2 (12.h3 0–0 13.Ne2 Re8+=) 12...0–0 13.h3 Re8+=) 12.Ne2 (12.Qa5 Re8 (12...Nbd7 13.Ne2 Qd8=) 13.Kf1 (13.Ne2 Qa5=) 13...Nbd7=) 12...Bg4 (12...Qc7 13.h3+= Re8+=) 13.0–0 (13.Qa5 Qa5=) 13...Nbd7 (13...Qc7= –0.22) 14.f3 Bh5 15.Re1 Qc7 16.Nf1 Nb6 (16...Bg6 17.Nc1+=) 17.Neg3 Bg6 18.Nf5 Ra8 19.Qc1 (19.Qb1 Bf5 20.Bf5 Na4=) 19...Nc4 20.Nd6 Bd3 21.Nc4 dc4 22.Qe3 h6 23.Ng3 (23.Qf2 Ra2 24.Ne3 b6+=) 23...Nd5 24.Qd2 (24.Qc1 Ra2 25.Re8 Kh7–/+) 24...Ra2 25.Ra1 Ra1 26.Ba1 Qe7 27.Kf2 Kh7 28.Bb2 b5 29.Nf1 '?' Qh4 '–+' 30.Kg1 Bf1 31.Kf1 Qh2 32.Bc1 Qh1 33.Kf2 Qh4 34.Kg1 Qf6 35.Qe2 Qg6 36.Bd2 Qb1 37.Kh2 Qd3 38.Qe5 g6 39.Qe8 '–/+' Kg7 40.Qe5 '?' Kh7 '??' ' 41.Qe8 '=' Kg7 42.Qe5 f6 '>=' 43.Qe1 g5 '–+' 44.Kg1 Kf7 45.Qc1 Qe2 46.Qc2 Kg7 47.Qc1 Kg6 48.Qb1 '?' f5 49.Qc1 Kf6 50.f4 g4 51.g3 Kg6 52.Be1 Nf6 53.Qd2 Qd3 54.Qg2 Ne4 55.Kh2 Kf6 56.Kg1 Ke6 57.Qh2 Qe3 58.Kf1 Qf3 59.Kg1 Qe3 60.Kf1 Nc3 61.Qh6 Kd5 62.Bf2 Qe2 63.Kg1 Ne4 64.Qh2 Qf2 65.Kh1 Qf1 66.Qg1 Qh3 67.Qh2 Ng3 68.Kg1 Qf1# 0–1. Grombacher,Walter – Pupols,Viktors, US op Seattle, 1966.

7.e3 ed4 8.ed4 Bd6 9.c4 Qc7 10.c5 Bf4 11.Ne2 Qe7 12.Nf3 Nbd7 13.g3 (13.Qa4 0–0+=) 13...Bc7 +=.

7.e3 ed4 8.ed4 Be6 9.Bd3 Bd6 10.Ngf3 0–0 11.0–0 Re8 12.Re1 Nbd7 13.Ng5 Qc7 =.

7.e3 ed4 8.ed4 Be7 9.Bd3 (9.Ngf3 Bf5 10.Ne5 ab4 11.ab4 Ra1 12.Qa1 Qc7 13.Be2 0–0+=) 9...0–0 10.Ngf3 Re8 11.0–0 Bg4 12.h3 Bh5 13.Re1 Nbd7 =.

7.e3 Bg4 A) 8.f3 Be6 9.c4 dc4 10.Bc4 Nd5 11.Qb3 Nd7 12.Ne2 ab4 13.e4 Nc7=; B) 8.Qa4 ed4 (8...Ra7 9.de5 Nfd7 10.Qc2 Qc7 11.f3 Bh5 12.f4 Qb6 13.Kf2 g5+=; 8...e4 9.c4 Ra7 10.c5 ab4 11.Qb4 Qd8 12.h3 Be6 13.Ne2 Nbd7=; 8...Nfd7 9.de5 Ne5 10.c4 Nc4 11.Nc4 dc4 12.Bc4 Nd7 13.Qb3 Bh5+=) 9.cd4 Bd6 10.Bd3 Qc7 11.h3 b5 12.Qc2 Bh5 13.ba5 Qa5+=; C) 8.Be2 Be2 9.Ne2 e4 10.Ng3 ab4 11.ab4 Ra1 12.Ba1 Qc7 13.f3 Bd6+=.

7.de5 Ng4 8.e3 Ne5= 9.Ngf3 A) 9...Nf3 10.Nf3 Bf5 (10...Bd6 11.b5 0–0 12.c4 Be6 13.Qd4 Qd4+=) 11.Be2 Nd7 (11...Be4 12.0–0 Qc7 13.c4 Bf3=) 12.0–0 Rd8 13.Nd4 Be4=; B) 9...Bg4 10.Be2 Qc7 11.0–0 Bf3 12.Nf3 Nf3 13.Bf3 Qe5=.

5.e3 d5

6.Qa4 Na6 7.d4 (7.Nf3 Bf5+=) 7...Bf5 (7...ab4 8.ab4 Bf5 9.Nf3+=) 8.Nd2 ab4 9.cb4 g6 (9...Nc7 10.Qd1+=) 10.Ngf3= Bg7 11.Rc1 0–0 12.Qb3 Nd7 13.Be2 Rac8 14.Ba1 Kh8 15.0–0 f6 (15...Nf6 16.Qc3=) 16.Nh4 Be6 17.e4 (17.f4 Bf7+=) 17...Nc7 18.ed5 Nd5 19.Bc4 Qd8 20.Rfe1 Bf7 21.Ne4 N7b6 22.Bf1 (22.Be2!?=) 22...Bh6+= 23.Rc5 Nd7 24.Ra5 f5 (24...b6 25.Ra7=) 25.Nc5+= b6 26.Nd7 Qd7 27.Ra6 Bg7 28.Qh3 Bf6 29.Nf3 Qb7 30.Ne5 Be8 (30...Kg7 31.Qg3=) 31.Qh6 (31.Be2 Nc7 32.Ra4 Rd8+=) 31...Kg8 32.Ra4 Rd8 33.Rb1 (33.Ba6 Qc7+=) 33...e6 (33...c5 34.Ba6 Qc7 35.b5 cd4 36.Nc4–+) 34.Nf3 (34.Re1 Nc7+=) 34...Qe7 (34...b5 35.Ra5=) 35.Qc1 (35.Re1 b5 36.Ra6 Qb7+=) 35...Rc8 (35...b5 36.Ra5=) 36.Ne5 Qc7 37.Ra6 (37.Ba6!? Ra8 38.b5=) 37...Qb7+= 38.Qb2 b5 (38...b5 39.Ra5 Bd8+=). Shevchenko – Romanov,Sergey SM, 1986.

6.Qb3 e5 7.c4 Nbd7 8.d4 ab4 9.de5 ba3 10.Qb6 Nb6 11.Na3 –/+.

6.Qb3 Bf5 7.c4 ab4 8.ab4 Ra1 9.Ba1 Na6 10.cd5 Nb4 11.Qb2? Qa5 12.Na3? Qa3!! (13.Qa3 Nc2 14.Ke2 Na3 15.dc6 bc6–+; 12...cd5?! 13.Qe5 Nd3 14.Bd3 Bd3 15.Qb8 Qd8 16.Qb7=+; 12...Nfd5 13.g4 Be6 14.e4–/+; 12...Nbd5?! 13.Nf3 e6 14.Nc4–/+) 0–1. Padilla,Jose – Paramos Dominguez,Roberto (2410), La Coruna op, 1996.

6.Qc2 Nbd7 7.d4 =+.

6.Qc2 Nbd7 7.Nf3 =+.

6.Qc2 e6 7.Nf3 Nbd7 8.d4 ab4 9.cb4 Bd6 10.Nc3 0–0 ½–½. Heyer,Thomas – Rilling,Regina, Weilburg op, 1997.

6.Qc2 g6 7.c4 Bf5 Black gets in control 8.Qb3 Nbd7 9.Nf3 Nc5 10.Qc3 Na4 11.Qb3 Nb2 12.Qb2 ab4 13.ab4 Ra1 14.Qa1 Qb4 15.Nc3 Bg7 16.Qa8 Kd7 17.Ne5 Ke6 18.Qa1 Ne4 19.cd5 cd5 20.Ne4 Be5 21.f4?? Ba1 (22.Ng5 Kf6–+; 21...Qe4?! 22.fe5 Qh4 23.Kd1 Bg4 24.Be2–+) 0–1. Franek,Mieczyslaw – Mus,Roman, corr 1. AMM Poland, 1991.

6.Qc2 g6 7.Bd3 Bg7 8.Nf3 Nbd7 9.0–0 0–0 10.Re1 Ng4 11.h3 Nge5 12.Ne5 Ne5 13.Be2 (13.e4 Rd8+=) 13...Bf5–/+ 14.d3 ab4 15.cb4 (15.ab4 Ra1 16.Ba1–/+) 15...Nd7 (better is 15...Nd3!? 16.Bd3 Bd3–/+) 16.Bg7+= Kg7 17.Qc3 Nf6 (17...e5!?=) 18.g4+= d4 19.ed4 Nd5 20.Qc5 Be6 21.Nd2 (21.Bf3 Qc5 22.bc5= (worse is 22.dc5 Nb4 23.Rc1 Nd3–+)) 21...h5 (better is 21...Qc7!?=) 22.Qb6 Nb6 23.Nc4 (23.gh5 Bh3 24.Bf3 Be6+=) 23...Nd5 24.Na5 (24.gh5 gh5 25.Bh5 Bh3=) 24...Rab8 (24...hg4 25.hg4 Ra7 26.Bf3=) 25.Kh2 hg4 26.Bg4 Bc8 27.Kg3 f5 (27...Rh8!?=) 28.Bf3+= f4 29.Kh2 Rh8 30.Bd5 (30.b5 Bh3 31.Kg1 e6 32.bc6 bc6 33.Nc6 Rb2+/–) 30...Rh3 31.Kg1 cd5 32.Re7 Kf6 33.Re8 Bg4 (33...Rd3 34.Rc1 b6 35.Nc6+= (35.Rcc8 Rc8 36.Rc8 ba5+=)) 34.f3 Re8 35.fg4 Re2 36.Rf1 f3 37.Rf2 Rh1! 38.Kh1 Rf2 39.Kg1 Ra2 40.Nb7 Kg5 41.Nc5 Kf4 (41...Kf4 42.g5 Ra3–+; 41...Ra3 42.Kf2 Kg4 43.Ke1–+; worse is 41...Kg4 42.Kf1–+) 0–1. Schoppmeyer,Herbert – Adam,Detlef, OWL–ch Loehne, 1971.

6.Qc2 g6 7.Nf3 Bg7 =.

6.d3 Nbd7 7.Nf3 e5 8.Be2 Bd6 +=.

6.d3 e5 7.Nf3 Bd6 8.Be2+= Bg4 +=.

6.d3 Bg4 7.Be2= Be2 (7...Be2 8.Ne2 e5=) 8.Qe2 e5 =. Akman,Ozgur – Baeckstroem,Mikael (2295), corr ICCF WSTT/3/06/1, 2006.

6.d4 Bg4=+ 7.Qc2 Nbd7 8.h3 Bh5 9.Nd2 Bg6 10.Bd3 Bd3 11.Qd3 e5 12.Qc2 ed4 13.ed4=+ Be7 14.Ngf3 Qa6 15.Nb3 a4 16.Nc1 0–0 17.Nd3 Rfe8 18.0–0–0 b6 19.Kb1 c5–/+ 20.g4 cb4 21.ab4 a3–+ 22.Bc1 Rec8 23.Nfe5 Ne5 24.de5 Ne4 25.Bd2 d4! 26.Ka1 Nc3 27.Rde1 Ne4!! 28.Nc5 Nd2 29.Qd2 bc5 30.e6 f6 31.bc5 Rc5 32.Qd4 Rd8 33.Qe3 a2 34.f4 Qd3 35.Qd3 Rd3 36.Rh2 Rcd5 37.Ree2 Rb5 38.Rb2 Rb2 39.Rb2 Bd6 40.Rc2 Kf8 41.f5 Rh3 42.Ka2 Rh2 43.Kb3 Rc2 44.Kc2 g6 45.Kd3 h5 46.gh5 gh5 47.Ke4 h4 48.Kf3 h3 49.Kf2 h2 (50.Kg2 Kg7–+) 0–1. Muratoglu,Salih – Demirel,Tolga (2310), TUR–ch Turkey, 1993.

6.d4 Bg4 7.Be2 Be2 8.Qe2 =+.

6.d4 Bg4 7.f3 Bf5 8.c4 ab4 +=.

6.d4 Bg4=+ 7.Nf3 e6 =+.

6.d4 g6 7.Nf3 Bg7 8.Be2 0–0 9.Nbd2 Qc7 10.ba5 Ra5 11.c4 dc4 12.Nc4 Rd5 13.0–0 Bf5 14.Nce5 Nbd7 15.Bc4 Ra5 16.Bc3 Raa8 17.Nd7 Nd7 18.Qb3 (18.Bd3 Bd3 19.Qd3 Ra4=) ½–½. Flazinski,Pawel – Hildingstam,Stefan, corr or01–018 E–mail, 2002.

6.Be2 e5 7.c4 ab4 8.ab4 Ra1 +=.

6.Nf3 c5 7.Be2 Nc6 8.b5 c4 =.

6.Nf3 Nbd7 7.d4 e6 8.Nbd2 Be7 =.

6.Nf3 e6 7.Bd3 Bd6 8.0–0 c5 +=.

6.Nf3 Bf5 7.Qa4 Nbd7 8.d4 Qc7 9.c4 dc4 10.ba5 b5 11.ab6 Nb6 12.Qd1 Na4 13.Bc3?? Bb1–+ 14.Qb1 Nc3 15.Qc2 Nce4 16.Bc4 e6 17.0–0 Ra3 18.Bb5?? Rc3 19.Ra8 Ke7 20.Qa2 Nd7 21.Ra7 Qd6 22.Ne5 Nef6?? 23.Bc4 g6 24.Qa4 Bh6–/+ 25.Nc6 Kf8 26.Qa5?? Rc4–+ 27.Ne5 Rc8 28.Rb1 Kg7 29.Qa4 Rc7 30.Ra6 Rb8 31.Ra1 Qb4 (32.Qb4 Rb4 33.Nd7 Rd7–+) 0–1. Wessel,Volkmar – Meyer,Juergen (2095), Schleswig Holstein–ch cand, 1994.

6.Nf3 Bf5 7.d3 Nbd7 8.Qc2 (8.Nbd2 A) 8...e6 9.Nb3 (9.Be2 Bd6 10.Nh4 Bg6 11.Ng6 hg6 12.h3) 9...a4 10.Nbd2 Be7 11.Be2 0–0 12.0–0; B) 8...e5= 9.c4 ab4 10.ab4 Ra1 11.Qa1 dc4 12.Qa8; 8.Nd4 Bg6 9.Be2 (9.Nf3 e5 10.Be2 Bd6 11.Nh4 ab4 12.ab4; 9.Nb3 ab4 10.cb4 e5 11.Be2 c5 12.0–0; 9.Nd2 e5 10.N4f3 Bd6 11.Be2 c5 12.Nh4; 9.Nc2 e5 10.Be2 Bd6 11.0–0 0–0 12.Nd2) 9...e5 10.Nf3 Bd6 11.Nh4 0–0 12.Ng6; 8.Be2 e5 9.Nbd2 (9.0–0 ab4 10.cb4 Bd6 11.Nbd2 0–0 12.e4; 9.h3 Bd6 10.Nbd2 0–0 11.e4 Be6 12.Ng5; 9.Nh4 Be6 10.f4 ef4 11.ef4 g6 12.d4; 9.Qc2 Bd6 10.Nbd2 ab4 11.cb4 0–0 12.0–0) 9...Be7 10.c4 ab4 11.ab4 Ra1 12.Qa1; 8.Nh4 Bg4 9.Be2 Be2 10.Qe2 e6 11.0–0 Bd6 12.Nf3) 8...e6 (8...e5 9.Nbd2+= (9.Be2 Bd6 10.Nbd2 ab4 11.cb4 0–0 12.0–0) 9...Bd6 10.Be2 ab4 11.cb4 0–0 12.0–0) 9.Be2 (9.Nh4 Bg6= 10.Be2 ab4 11.ab4 Ra1 12.Ba1) 9...Be7 (9...Bd6 10.Nh4 Bg4 11.Bg4 Ng4 12.c4) 10.0–0 0–0 (following moves are an analysis) 11.Nd4 Bg6 12.Nb3 ½–½. De Kruif,Kees (2050) – Gravett,Alan D (1975), Guernsey op, 2005.

6.Nf3 Bf5 7.Be2 e6 8.Nh4 Bg6 =.

6.Nf3 g6 7.Be2 Bg7 8.0–0 0–0 9.Qc2 Bf5 10.d3 Re8 11.Nbd2 e5 12.Nh4 Be6 13.Nb3 ab4 14.ab4 Na6 15.d4 e4 16.g3 Bg4 17.Ra5 Be2 18.Qe2 Nc7 19.Rfa1 Ra5 20.Ra5 Ra8 21.Ra8 Na8 22.f3 Qa7 23.b5 Qa2 24.Nc5 Nc7 25.b6 Na8 26.Nb7 Nb6 27.Nd8 Nc4 28.Nc6 Qb1 29.Kg2 Qb2 30.Qb2 Nb2 31.fe4 de4 0–1. Mastny,T – Zavodny,Z, Gargulakov mem, 1978.

6.Nf3 g6 7.Be2 Bg7 8.0–0 0–0 9.d4 Ne4 10.Nbd2 Nd2 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.Qd2 Qc7 (11...Bg4 12.c4=) 12.c4+= ab4 (12...Bg4 13.cd5 cd5 14.Rfc1+=) 13.ab4+/– Ra1 14.Ra1 e6 15.c5 Nd7 16.Qc3 f6 (16...b5 17.cb6 Qb6 18.Bd3+/–) 17.b5 e5 18.b6 Qb8 (18...Qd8 19.Qc2+/–) 19.Ra4 ed4 (19...e4 20.Nd2 f5+/–) 20.Qa3 (20.Nd4 Ne5+/–) 20...Ne5 (better is 20...de3!? 21.Qe3 Ne5=) 21.Nd4+/– Bd7 22.Qa2 Kh8 23.Ra7 Re8 24.Qa1 Kg8 25.Nb3 Rf8 26.Na5 Bc8 27.f4 Nd7 (27...Ng4 28.Nb7! Bb7 29.Bg4 h6+–) 28.Bd4 (28.Nb3 Nb6 29.cb6 Qd6+–) 28...Ne5? (better is 28...Re8+/–) 29.fe5+– fe5 (29...Bh6 30.ef6 Rf7 31.Be5 Be3 32.Kh1+–) 30.Nc6! bc6 31.Rg7! (31.Rg7 Kg7 32.Be5 Qe5 33.Qe5 Kg8 34.Qc7+–) 1–0. Kesteris,Imants – Kuczaj,Chris, Canada op Edmondton, 2000.

6.f4 c5 7.b5 c4 8.a4 Bf5 9.Nf3 Nbd7 10.Be2 Nc5 11.0–0 e6 12.Na3 Bd6 13.Nd4 Bd3 14.Nac2 Be2 15.Qe2 Nfe4 16.Kh1 h5 17.Ne1 h4 18.Rf3 Qd8 19.Ba3? (better is 19.Kg1–/+) 19...Ng3–+ 20.Rg3 hg3 21.h3 Ne4 22.Bd6 Qd6 23.Nef3 f6 24.Qe1 g5 25.fg5 fg5 (25...Ng5?! 26.Ng5 fg5 27.Qe2–+) 26.Ne2 (26.Kg1–+) 26...g4 27.Nfd4 gh3 (27...gh3 28.gh3 Rh3 29.Kg2 Rh2 30.Kg1 Nf2–+) 0–1. De Oliveira,Carlos A – Medeiros Jovany,Luis A, CXEB TBI–C–XI–XII–P–0068, 1993.

6.f4 Bf5=+ 7.c4 ab4 8.cd5 Nd5–/+ 9.Bc4 e6 10.Qb3 Nd7 11.ab4 Ra1 12.Ba1 Nb4 13.Qb2?? Nc2 14.Ke2 Na1 15.Qa1 Qb1 16.Qb1 Bb1 17.Nf3 Be4 18.Ra1 Bf3 19.Kf3 Kd8 20.Rc1 Bd6 21.d4 Nb6 22.Bd3 Kc7 (23.h3 Ra8–+) 0–1. Weiss,Ingo – Jacke,Benno, SVR op Remagen, RLP, 2001.

6.f4 Bf5=+ 7.c4 dc4 8.Bc4 ab4 =+.

6.f4 Bf5=+ 7.Ne2 Nbd7 =+.

6.f4 Bf5 7.Nf3 e6 8.Be2 Nbd7 9.0–0 c5 10.b5 c4 11.a4 Bd6 12.Ba3 Ba3 13.Na3 0–0–0 14.Nc2 Bc2 15.Qc2 Ne4 16.Nd4 Ndc5 17.d3 cd3 18.Bd3 Kb8 19.c4 Nd3 20.Qd3 Nc5 21.Qe2 h6 22.Rab1 f5 23.Nc6 bc6 24.bc6 Nb3 25.c5 Qc6 26.Rb3 Kc7 27.Qb2 Rb8 28.Qe5 1–0. Alexopoulos,Spiros – Zurawski,Claas, NRW–Jugendliga, 1995.

6.h3 Nbd7 7.Nf3 e6 8.Qc2 Bd6 9.Be2 Ne5 10.d3 Nf3 11.Bf3 Bd7 12.Nd2 ab4 13.cb4 e5 14.0–0 0–0 15.g4 Be6 16.Kh1 Rfc8 17.Rg1 c5 18.bc5 Rc5 19.Qb1 Rb5 20.Ra2 Ba3 21.Ra3 Ra3 22.Ba3 Rb1 23.Rb1 Qa6 24.Rb3 h6 25.Kg2 Qa5 26.Bb4 Qa6 27.Ra3 Qb5 28.Ra8 Kh7 29.Bc3 e4 30.de4 de4 31.Be4 Ne4 32.Ne4 Qc6 33.f3 Bd5 34.Bd4 Be4 35.fe4 Qe4 36.Kg3 b5 37.Ra6 Qb7 38.Rb6 Qc7 39.Kf3 Qc4 40.Kf2 b4 41.Ke1 Qc1 42.Kf2 b3 43.Kf3 Qf1 44.Kg3 Qg1 45.Kf3 Qh1 46.Kg3 Qg1 47.Kf3 Qd1 48.Kg3 Qc2 49.Kf3 f5 50.Kg3 Qc7 51.Kg2 Qb6 0–1. ekosachro (2410) – tightfist (2470), net–chess.com, 2014.

6.h3 Bf5 7.Nf3 e6 8.Qa4 Be7 9.Be2 0–0 10.0–0 c5 11.Ne5 (Better is 11.d3!?=+) 11...Nc6–/+ 12.Nc6 bc6 (12...Qc6?! 13.Bb5 Qb6 14.bc5 Bc5 15.c4=+) 13.d3 ab4 14.Qb3 Rfb8 15.a4 bc3 16.Qb6 Rb6 17.Bc3 Rba6 18.Bd1? (Better is 18.g4 Bg6 19.a5=+) 18...Bd3–+ 19.Re1 Ne4 20.Nd2 Nc3 21.Bf3 Ra4 22.Kh2 Ra1 23.Ra1 Ra1 24.h4 Ra2 25.Nb3 Rf2 26.Kg3 Rb2 27.Nc1 Bd6 28.Kh3 Bf5 29.Bg4 Bg4 30.Kg4 Rg2 31.Kh5 g6 32.Kh6 Bf8 0–1. willi_weizenkeim – den2707, HCL–B1749 playchess.de, 2003.

6.d4 Bf5

7.c4 ab4 8.c5 Qa5 =+.

7.Bd3 Bd3=+ 8.Qd3 Nbd7 9.Nd2 e5 10.f3 ed4 11.ed4 Be7 12.Ne2 0–0 13.0–0 Rfe8 14.Ng3 (14.Rfe1 Bd6=+) ½–½. Schalkwijk,Peter – Daus,Peter, Standard, 2001.

7.f3 Nbd7 8.Ne2 e5 9.g4 Bg6 10.Ng3 ed4 11.ed4 Be7 12.f4 Be4 13.Ne4 Ne4 14.g5 h6 15.Nd2 hg5 16.Ne4 de4 17.Qc2 f5 18.0–0–0 gf4 19.Qg2 g5 20.Bc4 0–0–0 21.Be6 Rhf8 22.c4 ab4 23.Qh3 ba3 24.Ba3 Ba3 25.Qa3 Kc7 26.Qe7 Rfe8 27.Qf7 Re6 28.Qe6 Ra8 29.c5 Qb4 30.Kc2 Ra3 31.Rb1 Rc3 0–1. Eckhoff,K (1690) – Riemelmoser,O (2045), Finkenstein, 1997.

7.f3 e6 8.c4 =+.

6.Nf3 Bg4

7.Be2 Bf3 8.Bf3 e5 9.0–0 =.

7.h3 Bf3 8.Qf3 e5 +=.

7.Be2 Nbd7

8.0–0 e5=+ 9.Qc2 Be7 10.d3 0–0 11.Nbd2 Rfe8 12.Rfe1 Rac8 13.Nf1 c5 14.ba5 Qa5 15.Ng3 Bd6 16.e4 Qc7 17.h3= Bf3 18.Bf3 d4 19.c4 g6 20.Qd2 Bf8 21.Reb1 Bg7 22.Bc1 Ra8 23.Rb5 b6 24.a4 Ra7 25.Qb2 Rea8 26.Bd1 Ne8 27.Qc2 Nd6 28.Rb2 Rf8 29.Bg5 f6 30.Bd2+= h6 31.Qc1 Kh7 32.Bf3 Qd8 33.Rba2 Qc7 34.Qe1 Kh8 35.Ne2 f5 36.Ng3 f4= 37.Nf1 Nf6 38.Nh2 h5 39.Qb1 Rb8 40.Qd1 Rf8 41.Qc2 Rc8 42.Qd1 Qf7 43.Qc2 Nh7 44.Be2 Ng5 45.f3 Qe6 46.Bf1 Bf6 47.Be1 Ngf7 48.Rb1 Bd8 49.Bf2 g5 50.g4 fg3=+ 51.Bg3 Nh6 52.Bg2= Bc7 53.Kh1 Rg8 54.Rg1 Nhf7 55.Qd1 Rg6 56.Be1 Ne8 57.Bd2=+ Rg7 58.Be1 g4 59.h4?? g3–/+ 60.Nf1 Nf6 61.Qc1 Nh7 62.Qd1 Bd8 63.Qd2?? Qf6–+ 64.Bh3 Qh4 65.Qg2?? Nfg5 66.Qg3 Qh3 67.Qh3 Nh3 68.Rg7 Rg7 69.Kh2 Nf4 70.Ra3 (70.Bg3 Nd3 71.Rd2 Nf4–+) 0–1. Baessler,Arwed (1735) – Rettler,Heinz (1870), 8sen.BayEM Schney, 1996.

8.d4 e6 9.Nbd2 Bd6 10.c4 Qd8 11.c5 Bc7 12.0–0 0–0 13.b5 cb5 14.Bb5 Qe7 15.Rc1 e5 16.de5 Be5 17.Be5 Ne5 18.Be2 Rfc8 19.Ne5 Be2 20.Qe2 Qe5 21.Nf3 Qe7 22.Qb5 ½–½. Marchant – Brodie, Toronto, 1973.

8.d4 Bf3=+ 9.gf3 e5 10.Qc2 ed4 11.ed4 Bd6 12.0–0 0–0 13.Nd2 Qc7 14.h3 Nh5 15.Rfe1 Qd8 16.Qf5 g6 17.Qd3 Nf4 –+ (18.Ne4 Nd3 19.Bd3 de4 20.Be4 Qh4–+) 0–1. Popov,Vasil – Dragiev,Veselin (2330), Sofia Baharov op, 1995.

8.h3 Bf3 9.Bf3 e5 =.

8.h3 Bh5 9.c4 ab4 10.ab4 Ra1 11.Ba1 Qb4 12.Bc3 Qd6 13.g4 Bg6 14.cd5 Nd5 15.g5 Nc3 16.Nc3 e6 17.d3 Be7 18.Ne4 Be4 19.de4 Qd1 20.Kd1 Nc5 21.e5 Ne4 22.Ke1 Ng5 23.Ng5 Bg5 24.f4 Be7 25.Kd2 Kd7 26.Ra1 Rd8 27.Ra7 Kc7 28.Ke1 Bc5 29.Ra2 Be3 30.Bg4 Bf4 0–1. Kellerer – Mrkvicka, corr, 1984.

5.e3 e6

6.d4 d5 7.Nf3 =.

6.d4 Be7 7.Nf3 0–0 8.Bd3 d6 9.0–0 Bd7 10.Nbd2+= Rc8 11.Rc1 Na6 12.Ba6 Ra6= 13.Qe2 ab4 14.ab4 Ra2 15.Rb1=+ Rca8 16.Qd3 h6 17.Rfe1 c5 18.dc5 dc5=+ 19.Nc4 Qa6–/+ 20.Nce5 Bb5 21.c4= Be8 22.b5 Qa5 23.Bc3 Qc7 24.Ra1+= Nd7 25.Ra2 Ra2 26.Ra1 Ra1= 27.Ba1 Qa5 28.Bc3 Qc7 29.Nd7 Bd7 30.Ne5 Be8= 31.h3 Bf6 32.Nf3+= Bc3 33.Qc3 Qd6 34.Qe5+/– Qe5 35.Ne5 f6 36.Nd3 b6 37.f3 Kf7 38.Kf2 Ke7+= 39.e4 Kd6 40.Ke3 Bd7 41.g4 g6 42.h4 f5 43.ef5 ef5 44.gf5 Bf5= 45.Nf4 Ke5 46.Nd5+– Kd6 47.Nb6 Be6 48.Kd3 Kc7 49.Na4 Bd7? 50.Nc5 Bf5 51.Kd4 Kb6 52.Ne4 (52...Be6 53.f4+–) 1–0. alfilrabioso (1885) – Eralos (1830), Buho21.com, 2006.

6.Nf3= d5 7.Qc2 Nbd7 (7...Bd6 8.Be2+=) 8.d4 Ne4 (8...Bd6 9.c4 dc4 10.Ne5 ab4 11.Nc4=) 9.Bd3= f5 10.Nbd2 Be7 (10...ab4 11.cb4 (11.Ne4? fe4 12.ab4 Ra1 13.Ba1 ed3 14.Qd3 Nf6–+; 11.ab4?! Ra1 12.Ba1 Bd6=) 11...Bd6 12.0–0= (worse is 12.Ne4 fe4 13.Be4 de4 14.Qe4 Nf6–+)) 11.Nb3 (worse is 11.Ne4 fe4 12.Be4 de4 13.Qe4 Nf6–/+) ½–½. Kukel,I – Tornai,I, Budapest, 2000.

6.Nf3= d5 7.Be2 Bd6 =.

6.Nf3 d5 7.Be2 Be7 8.0–0= Nbd7 9.Qc2 e5 10.d3 0–0 11.Nbd2 Qc7 12.e4 Nb6 13.d4 de4 14.Ne4 ed4= 15.Nd4 Nbd5 16.Nf6 Bf6 17.Bf3 Nf4 18.Ne2 Be6 19.Nf4 Qf4 20.Be4 g6 21.g3 Qc7 22.Bd3 Rfd8 23.Rfd1 Rd7 24.c4 Bb2 25.Qb2 Rad8 26.Qe2 ab4 27.ab4 Rd4 28.Qc2 Qd7 29.Be2= Bf5 30.Qc3 Rd1 31.Rd1 Qe7 32.Rd8 Qd8 33.c5 Qd5 34.Bf3 Be4 35.Be4 Qe4 36.h4 h5 37.Kh2 Kf8 38.Qd2 Kg7 39.Qb2 Kh7 40.Qd2 Qf3 41.Qe3 (better is 41.Kg1!?+=) ½–½. Asmund,Erik – Jensen,Jan K, 21st North Sea Cup, 2006.

6.f4 d6 =.

5.e3 g6

6.d4 ab4 7.cb4 d5 8.Bd3 =.

6.d4 d5 7.Bd3 Bg7 8.Nd2 0–0 9.h4 Re8 10.Ngf3 Bg4 11.Qc2 ab4 12.cb4= Nbd7 13.Nh2 e5 14.f3 Be6–/+ 15.de5? Qe3–+ 16.Kd1 Ne5 17.Re1 Qd3 18.Be5 Qc2 19.Kc2 Bf5 20.Kb3 Re5 21.Re5 Nd7 22.Ree1 Ba1 23.Ra1 Re8 24.Nhf1 h5–+ 25.Ng3 Bd3 26.Kc3–/+ Ba6 27.Kd4 g5 28.hg5 h4 29.Nf5 Re2 30.Kc3 Rg2 31.f4 h3 32.Rh1 h2 33.Nf3 Ra2 34.N5d4 Ra3 35.Kb2 Re3 36.Rh2 Bd3 37.Rh6 Nb6 38.Ne5 Nc4 39.Nc4 dc4 40.Rd6 Be4 41.Rd8 Kg7 42.Rd7? c3–+ 43.Kb3 Bd5?? 44.Kc2?? Be4 45.Kb3–+ c2 46.Kb2 Re1 47.Nc2 Re2 48.Rb7 Rc2 49.Kb3 Rf2 50.b5 cb5 51.Rb5 Rf4 52.Re5 0–1. Kotlowski,Tomasz (1800) – Sciwarski,Mariusz (1980), I MFS Chojnice Poland, 2005.

6.Nf3 Bg7

7.d3 0–0 8.Be2 d6 9.Nbd2 Nd5 10.Nc4 Qc7 11.Qd2 =.

7.d3 0–0 8.Be2 d6 9.Nbd2 e5 10.0–0 (10.Nc4 Qc7+=) 10...Re8 (10...Be6 11.e4=) 11.Qc2 (11.Nc4 Qc7 12.Na5 e4+=) 11...d5 12.c4 Nbd7 (12...Bg4 13.cd5 (< 13.Be5 Re5 14.Ne5 Be2=+) 13...cd5 14.ba5+=) 13.Bc3 ab4 14.ab4 Ra1 15.Ra1 c5 16.bc5+/– Qc5 17.Ne5!+– Ne5 18.Be5 dc4? 19.d4+– Qe7 20.Bc4 Bd7 21.Ra7 Ng4 22.Bg7 Qh4 23.Nf3 1–0. guest970 – guest886, ICC, 2003.

7.d4 0–0 8.c4 =.

7.d4 d5 8.c4 ab4 9.c5 Qc7 =.

7.d4 d5 8.Nbd2 Bg4 9.Be2 0–0 10.0–0 Qc7 11.c4 Bf3 12.Bf3 e6 13.Be2 Nbd7 14.b5 dc4 15.Bc4 c5 16.Rc1 Ne8 17.a4 Nd6+= 18.Be2 Qb8 19.Nb3 cd4 20.Nd4 Nb6 21.Qb3+/– Ne4 22.Rfd1 Qe5 23.Ba3 Rfc8+= 24.Bf3 Rc1 25.Rc1 Nd2 26.Qc2 Nf3 27.Nf3 Qd5 28.Rd1 Qc4=+ 29.Qc4 Nc4 30.Be7 Nb6 31.Rd8= Rd8 32.Bd8 Nc4 33.Kf1 Bc3 34.Ke2 Nb2=+ 35.Ng5 Na4–/+ 36.Kd3 Bb4 37.Ne4 Nb2 38.Kc2 Nc4 39.Kb3 Nd2 40.Nd2 Bd2 41.e4 Kf8 (41...f5 42.ef5 ef5 43.Ka4=) ½–½. Buczinski,Henryk – Dzieniszewski,Andrzej, Cieplice Zdroj Poland, 1976.

7.d4 d5 8.Be2 0–0 (8...ab4 9.cb4 0–0 10.Nc3=) 9.Nbd2 Qc7 (9...Bf5 10.0–0=) 10.ba5 (10.0–0 ab4 11.ab4 Ra1 12.Qa1 b5=) 10...Ra5 (10...Qa5 11.c4=) 11.c4 dc4 (11...Bg4 12.0–0=) 12.Nc4+= Rd5 13.0–0 Bf5 14.Nce5 Nbd7 15.Bc4 Ra5 (15...Rd6 16.Qb3 Nd5 17.Rfe1+=) 16.Bc3 (16.Qb3 Nd5=) 16...Raa8 (16...Ra7 17.Nd7 Nd7 18.Bb4=) 17.Nd7 Nd7 18.Qb3 (18.Bb4 Nb6 19.Bd3 Bd3 20.Qd3 Rfd8=) ½–½. Flazinski,Pawel – Hildingstam,Stefan, corr, 2002.

5.Nf3 d5

6.Qa4 Nbd7 7.e3 e6 8.d4 Bd6 9.Bd3 0–0 10.Nbd2 Qc7 11.0–0 e5 12.de5 Ne5 13.Ne5 Be5 14.f4 Bd6 15.c4 dc4 16.Nc4 b5 17.Qc2 bc4 18.Bc4 Re8 19.Bf6 gf6 1–0. tightfist (2385) – rirons (2465), net–chess.com, 2014.

6.Qc2 g6 7.e3= Bf5 8.Bd3 Bd3 9.Qd3 Nbd7 10.Qc2 e5 11.c4 e4 12.c5 Qa6 13.Ne5 Bg7 14.d4 Ne5 15.de5 Ng4 Black fights for the Initiative 16.e6 0–0 17.Bg7= Kg7 18.h3 Ne5–/+ 19.Qc3 f6 20.ba5 Nd3 21.Kd2 Nf2 22.Rg1 Qd3 23.Qd3 Nd3 24.Nc3 Ra5 25.Nd5 cd5 26.c6 bc6 27.Rgb1 Nc5 28.Rb6 Re8 29.Rc6 Nb3 (30.Kc3 Na1 31.Rc7 Kh6–+) 0–1. Dieng,Markus – Lutzenberger,Raimund (2300), Oberschwaben–ch, 1992.

6.d4 c4 7.Nbd2 Bf5 8.e4 Ne4 9.Be2 e6 10.0–0 Be7 11.Ne4 Be4 12.Ne5 f6 13.Nf3 0–0 14.Re1 e5 15.Nd2 Bg6 16.Nf3 Nd7 17.de5 Qc6 18.Nd4 Qc8 19.Ne6 Re8 20.Qd5 Nb6 21.Qd4 Qe6 22.Bg4 f5 23.Bf3 Rad8 24.Qe3 Rd3 25.Qf4 Na4 26.Rab1 b5 27.Red1 Nb2 28.Rb2 Rd1 29.Bd1 Bd6 0–1. Goan – Chatterjee, email 4AMM–08 1997.

6.d4 Bf5 7.e3 Nbd7 8.Bd3 (8.Nbd2 Be4=) 8...Bd3 (8...Bg4 9.h3 Bf3 10.Qf3–/+) 9.Qd3+= e6 10.Nbd2 Be7 11.0–0 0–0 12.Rfe1 (12.Nb3 ab4 13.cb4 Qc7+=) 12...Qa6 13.Qc2 Rac8 (13...b5 14.Rab1+=) 14.Rac1 (14.c4 Rfe8=) 14...b6 15.Qb1 (15.ba5 ba5 16.a4 Rc7=) 15...c5 16.Ba1 ab4 17.ab4 cb4 18.cb4 Qa3 19.b5 Rc1 20.Rc1 Ra8 21.Bc3 (21.Qc2 Qa4 22.Qa4 Ra4 23.Rc8 Nf8+=) 21...h6 22.h3 Qa4 23.Ne1 Ne8 24.e4 Nc7–/+ 25.ed5 Nd5 26.Qd3 Nc3 27.Rc3 Nf6 28.Rc7 Bb4 29.Ndf3 Qa1 30.Kf1 Nd5 31.Rc2?? Be1–+ 32.Ne1 Nb4 33.Qc3 Nc2 34.Qc2 Qd4 35.Qc6 Ra1 36.Qf3 Qb4 37.Qe2 Rb1 38.g3 Qb5 39.h4 Kf8 40.f4 Ke7 41.Kf2 Qe2 42.Ke2 Re1! 43.Ke1 Kd6 44.Kd2 Kd5 45.Kd3 e5 46.h5 ef4 47.gf4 g6 0–1. Ebert,Lutz (1815) – Zeeck,Detlef (1850), Mecklenburg VP LL2, 2002. (=1.Nf3 Nf6 2.b4 c6 3.Bb2 Qb6 4.a3 a5 5.c3 d5)

6.e3 Nbd7 7.d4 =.

6.e3 Bf5 7.d4 e6 8.Nbd2 Nbd7 9.Nb3 ab4 10.ab4 Ra1 11.Qa1 Qc7 12.Qa8 Qb8 13.Qb8 Nb8 14.Ne5 Ne4 (14...Nbd7 15.Be2=) 15.f3 Nd6 16.g4 Bc2 17.Nc5 f6 18.Ned3 Kf7 19.Kd2 Bd3 20.Bd3 b6 21.Na4 Nd7 22.e4 Nc4 23.Bc4 dc4 24.Ke3 h5 25.h4 hg4 26.fg4 g6 27.Kf3 Be7 28.Bc1 ½–½. Tuchtenhagen,Harald – Onasch,Gunnar, Mecklenburg VP LL1, 1999.

6.e3 Bf5 7.Be2 c5 8.0–0 Nc6 9.b5 c4 10.a4 Be4 11.d4 cd3=+ 12.Bd3 Bf3 13.Qf3 Ne5 14.Qe2 Nd3 15.Qd3 Rc8 16.Nd2 Qd6 17.Rfc1 Ng4 18.Nf3 Rc4 19.Qe2 e6 20.h3= White fights for the Initiative 20...Ne5 21.Nd2 Rc8 22.c4 Rd8 23.c5+/– Qb8 24.Bd4 Rc8 25.Nb3 Ng6 26.b6 Ne7 27.Na5 f6 28.c6 Nc6+/– 29.Nc6 Rc6 30.Rc6 bc6 1–0. Vetter,Udo – Tschoepe,Frank, TT–09 '1.b4', 2003.

6.e3 Bf5 7.Be2 Nbd7 8.0–0 e5 9.d4 e4 10.Nfd2 ab4 11.ab4 Ra1 12.Ba1 Bd6 13.Na3 0–0 14.Bb2 Ra8 15.Qb3 Qc7 16.g3 b5 17.Ra1 Nb6 18.Nab1 Ra1 19.Ba1 Qc8 20.Qd1 Bg4 21.Bg4 Ng4 22.Kg2 Qf5 23.Qg1 h5 24.h3 Nf6 25.Qd1 g5 26.Na3 g4 27.h4 Qc8 28.Bb2 Ne8 29.Nc2 Ng7 30.Nb3 Nf5 31.Na5 Bb8 32.Qe1 Qc7 33.Bc1 (33.Qg1 Nd6+=) 33...Na4 (33...Nh4 34.Kf1 Nf3 35.Qd1–+) 34.Bd2 Nb2 (34...Nh4!? 35.Kf1–+) 35.Qh1 Ng3 36.fg3 Qg3 37.Kf1 Nd3 38.Qg2 Qh4 39.Ne1 Qf6 40.Ke2 Nb2 41.Bc1 (41.Bc1 Na4 42.Bd2–/+) 1–0. HFlew – BlackPanther, playchess.de, 2004.

6.e3 Bg4 7.Qc2 Nbd7 8.Be2 g6 9.ba5 Ra5 10.c4 Bf5 11.Qc1 Nc5 (11...dc4!? 12.Bc3 Ra4+=) 12.Bd4 e5 (better is 12...Bg7!?=) 13.Ne5+/– Bg7 14.Bc5 Qc5 15.d4 Qa7 16.Nc3 0–0 17.c5 Ra8 18.a4 Nd7 (better is 18...Ne4!? 19.Ne4 Be4=) 19.Nd7+/– Bd7 20.0–0 b6 21.cb6 Qb6 22.Rb1 Qd8 23.Qd2 Bf8 24.Bf3 Bf5 25.Rb2 Ba3 26.Ra2 Bb4 27.Rfa1 c5 28.Qb2 Bc3 29.Qc3 c4 30.Bd1 Qg5 31.Rb2 Bh3?? (better is 31...Be4 32.g3 Qf5+=) 32.f4+– (32.f4 Qh4 33.gh3 Qh3 34.Rb7+–) 1–0. Begna,Bozidar (2085) – Simon,Thomas (1950), Dortmund GER, Sparkassen Open, 2012.

6.e3 Bg4 7.Be2 Nbd7 8.0–0 e6 9.d4 Bd6=+ 10.Nbd2 Bb8 11.c4 dc4 12.Nc4+= Qc7 13.Ncd2 Ne4 14.Ne4 Bf3 15.Ng3 Be2 16.Qe2 h5 17.f4 Nf6 18.e4 (18...h4 19.Nh1=; 18.b5 h4 19.Nh1 cb5 20.Qb5 Qd7=). Wartig,Wolfgang – Kross, corr SOK–89–48, 1989.

6.g3 Nbd7 7.d4! e6! 8.Bg2 Bd6.

6.g3 Bf5 7.Bg2 Nbd7 8.Qc1 e6 9.0–0 c5 10.d3 Be7 11.Nbd2 0–0 12.ba5 (12.bc5 Bc5 13.c4 Rfc8=) 12...Ra5 13.c4 d4 14.Qc2 Rfa8 (15.e4 Bg4=) =. Grund,Karl – Baumann,R, corr ICCF WCup V, 1984.

6.g3 Bg4 7.Bg2 Nbd7 8.0–0 e5 9.d3 Bd6 10.Nbd2 0–0 11.h3 Bh5 12.g4 Bg6 13.Nh4 Rfe8 14.Ng6 hg6 15.e3 Rad8 16.Nb3 ab4 17.ab4 e4 (17...g5 18.e4=) 18.Nd4 (better is 18.g5!? Nh5 19.de4+=) 18...Ne5 19.de4 de4 20.Qc2 Bb8 (20...Nc4 21.Rfd1+=) 21.Bc1 (21.Be4 Ne4 22.Qe4 c5 23.bc5 Qb2+=) 21...Qc7 22.f4 (22.Be4?? Rd4! (22...Ne4?! 23.f3 Ng3 24.Rd1–+) 23.f3 Rd7–+) 22...ef3 23.Nf3 Nc4 24.Re1 Ne4 25.Bf1?? (better is 25.Rd1–/+) 25...Ne5 26.Ne5 (26.Qe4?? Nf3 27.Kg2 Qg3 28.Kh1 Qh2) 26...Qe5 27.Bg2?? (27.Qg2 Qc3 28.Bb2 Qb4–+) 27...Qh2 (27...Nc3?! 28.Bb2 Qh2 29.Kf1–+; 27...Qc3?! 28.Qc3 Nc3 29.Bb2–/+) 28.Kf1 Ng3 29.Kf2 Ne4 30.Kf1 Ng5 31.e4 Nh3 32.Be3 g5 33.Ra2 Nf4 34.Bf4 Bf4 35.Qe2 Qg3 36.Qf3 Qf3 37.Bf3 Rd3 38.Kf2 Rc3 39.Rb2 Rd8 40.b5 cb5 41.Rb5 Rd2 42.Re2 Re2?? 43.Ke2–/+ Rc7 44.e5 Re7 45.Bb7 Be5 46.Kf3 g6 47.Be4 Kg7 48.Rb7 Rb7 49.Bb7 f5 50.Bd5 Kf6 51.Bc4 Bd4 ½–½. kianas – craig4000, ChessWorld.net, 2012.

5.Nf3 g6

6.d4 Bg7 7.Nbd2 d5 8.e3 Bg4 9.Bd3 Nbd7 10.h3 Bf3 11.Nf3 Qc7 12.0–0 0–0 13.c4 ab4 14.ab4 Ra1 15.Qa1 dc4 16.Bc4 Nb6 17.Bb3 Ra8 18.Qc1 Nbd5 19.Bc3 Ne4 20.Be1 e6 21.Nd2 Nec3 22.Qc2 Qb6 23.Bd5 Ne2 24.Kh1 ed5 25.Nb1? Qb5 26.Nd2 Bf8 27.f4 Bb4 28.Rf2 Ra1! 29.Nb1 Be1 30.Re2 Rb1 31.g4 Bd2! 32.Kg2 Qe2 0–1. Vasapollo – Loschi,E, 1982.

6.e3 Bg7

7.Qc2 d5 8.d4 Bf5 9.Bd3 Bd3 10.Qd3 Nbd7 11.Nbd2 0–0 12.0–0 Rfe8 13.Rab1 ab4 14.cb4 Qc7 15.Rfc1 Rac8 16.b5 Qd6 17.Ne5 c5 18.Nd7 Nd7 19.dc5 Nc5 20.Qe2 e5 21.Rd1 Qe6 22.Rdc1 Qb6 23.Rc2 Na4 24.Rbc1 Rc2 25.Rc2 Nb2 26.Rb2 Qc5 27.Ra2 Ra8 28.Qd3 Rc8 29.g3 e4 30.Qb1 Qc1 31.Qc1 Rc1 32.Kg2 Rc3 33.a4 Bf8 34.Nb1 Rb3 35.Nd2 Rc3 36.a5 Rc5 37.a6 ba6 38.ba6 Rc8 39.a7 Ra8 40.Nb3 f5 41.Nd4 Bc5 42.Nb5 Kf8 43.Ra6 Ke7 44.h4 Kd7 45.Rf6 1–0. tightfist (2470) – blackdogs (2490), net–chess.com, 2014.

7.Be2 0–0 8.0–0 d5 9.d3 Bg4 10.Nbd2 Nbd7 11.Rb1 ab4 12.cb4 Rfe8 13.a4 e5 14.a5 Qb4 15.Ne5 Be2 16.Qe2 Ne5 17.Be5 Qa5 18.Bf6 Bf6 19.Rb7 Reb8 20.Rb8 Rb8 21.d4 Rb2 22.Nc4 Re2 23.Na5 Rc2 24.Rb1 c5 25.dc5 d4 26.ed4 Bd4 27.c6 ½–½. Demoulin,Joachim – Bunzmann,Dimitrij, Glorney Cup, 1995.

7.Be2 0–0 8.0–0 d5 9.d4 Nbd7 10.Nbd2 ab4 11.cb4 Qc7 12.Nb3 b6 13.Qd2 Ne4 14.Qc2 Ndf6 15.Rfc1 Bd7 16.Ne5 Bf5 17.Qc6 Qc6 18.Rc6 Rfb8 19.Rcc1 Nd6 20.Nc6 Rb7 21.Bf3 Nfe4 22.h3 Nc4 23.Be4 Be4 24.a4 Nb2 25.a5 ba5 26.Nba5 Rc7 27.f3 Bf5 28.Kf1 Nd3 29.Rc3 Nb2 30.Rac1 Na4 31.Rb3 Nb6 32.Rbc3 Nc4 33.Nc4 Rc6 34.Ne5 Rc3 35.Rc3 Be5 36.de5 Ra1 37.Kf2 Ra2 38.Kf1 Rb2 39.g4 Be6 40.b5 Rb5 41.f4 h5 42.Kf2 hg4 43.hg4 Bg4 44.Kg3 Bf5 45.Rc7 e6 46.Rc8 Kg7 47.Rd8 Rb3 48.Ra8 Re3 49.Kf2 Re4 50.Kf3 Re1 (time, 0–1). JPVAAST – JHW, fics, 2001.

7.Be2 0–0 8.0–0 d5 9.d4 Bf5 10.Ne5 (10.Nbd2 ab4 11.Qb3 Qc7 12.cb4 Nbd7=) 10...Na6 (10...ab4 11.cb4 Nbd7 12.Nd7 Nd7 13.Nc3=+) 11.Bd3 (11.Nd2 h6=) 11...Bd3 12.Qd3 (12.Nd3 Nc7=) 12...Nc7 (12...ab4 13.cb4 c5 14.dc5 Nc5 15.Qe2=) 13.Qe2 (13.Nd2=) 13...Ne4 (better is 13...ab4 14.cb4 Nce8=) 14.Nd7+/– Qa7 (14...Qb5 15.Qb5 Nb5 16.Nf8 Kf8 17.f3+/–) 15.Nf8+– Rf8 16.Nd2 Nd6 (16...Nd2 17.Qd2 Nb5 18.Qe2+–) 17.a4 (17.f4 f5+–) 17...e5 18.de5 Be5 19.b5 (19.Nb3 b6+–) 19...cb5+/– 20.ab5 Ncb5 21.Nf3 Bc3+= 22.Bc3 Nc3 23.Qc2 Rc8 24.Ne5 Qa6 25.Kh1 Nce4 26.Qb3?? Nd2–+ 27.Qd5 Nf1 28.Nd7 Nf5 29.Nf6?? Kg7 30.Qe5?? Qf6 31.Qa5 Nd2 32.Rd1 Ne4 33.Kg1 Qh4 34.Qa1 Kh6 35.g3 Qh5 36.Re1 Nd2 37.Rb1 Qf3 38.Qa4 Nb1 39.Qf4 Qf4 40.ef4 0–1. bloodymama – merriman, Caissa's Web, 2004.

7.Be2 0–0 8.0–0 d6 9.d4 Nbd7 10.Nbd2 ab4 11.ab4 Ra1 12.Qa1 d5 13.Qa5 Re8 14.Ra1 Qa5 15.Ra5 e5 16.de5 Ne5 17.Ne5 Re5 18.c4 Re8 19.Bd4 Ne4 20.Ne4 de4 21.Bg7 Kg7 22.Ra8 Bd7 23.Re8 Be8 24.c5 f5 25.Kf1 Bf7 26.Ke1 Kf6 27.Kd2 Ke5 28.Kc3 g5 29.Bd1 h5 30.g3 h4 31.Be2 Be8 32.Kd2 Bd7 33.Kc3 f4 (33...h3!?=) 34.ef4+= gf4 35.gf4 (35.gh4!? f3 36.Bc4+/–) 35...Kf4= 36.Kd4 Bh3 37.Bh5 Bf1 38.Bd1 Bg2 39.Bh5 Bf3 40.Bg6 Bh1 41.Bh7 (41.Bh5!?=) 41...Bg2–/+ 42.Bg6 Kf3 43.Be4 Kf2 44.Bf5 h3 45.Bc8 Kg1 46.Ke3 Bf1 47.Bb7 Bb5 48.Kf3 Kf1?? (better is 48...Kh2 49.Kf2 Ba4=) 49.Bc8+– Ke1 50.Bh3 Kd2 51.Ke4 Kc3 52.Ke5 Kb4 53.Kd6 Kc3 54.Bf5 Kd4 55.h4 Be2 56.Bg6 (56.Bg6 Bc4 57.h5+–; worse is 56.Kc6 Ke5 57.Bg6 Bf3 58.Kd7 Bg4 59.Kc7 Bf3+–) 1–0. Mitrovic,Zivadin (2185) – Desnica,Vladan (2270), Stari Banovci SER, Vojvodina Ch Div2, 2013.

4.Qa4 Nf6

5.e3 d5 6.Nf3 Nbd7 7.d4 e6 8.b5 c5 9.Na3 c4 10.Rb1 Ne4 11.Qc2 Be7 12.Nd2 Ndf6 13.Ne4 Ne4 14.Bc4 Nf2 15.Qf2 dc4 16.0–0 Bd7 17.Bc1?? (17.Qf7 Kd8+–) 17...Ba3? (Better is 17...f5+/–) 18.Qf7+– (18.Ba3?! f5+/–) 18...Kd8 19.Ba3 Bb5 (19...Re8+–) 20.Qe7 Kc8 21.Rf8 Rf8 22.Qf8 Kd7 (22...Qd8 23.Qd8 Kd8 24.Rb5 Kc7+–) 23.Qa8 (23...Qa6 24.Qg8+–) 1–0. Greisen,Flemming Dahl – Einarson,Erland, Politiken Cup, 2000.

4.Qb3 ab4

5.cb4 Na6 6.e3 (6.a3!?=) 6...Qb4–/+ 7.Ba6 Qb3 8.ab3 ba6 9.Nf3 (better is 9.d3!?–/+) 9...Rb8–+ 10.0–0 Rb3 11.Ra2 Nf6 12.Nc3 e6 13.e4 Be7 14.Rb1 0–0 (14...d5 15.e5 Ne4 16.Ne4 de4 17.Nd4–+) 15.Ra5 Bb4 16.Rg5? (better is 16.Ra4 c5 17.e5–+) 16…Bc3 (16...Bc3 17.dc3 Ne4–+) 0–1. Anderson,George – Babb,Jeff (2130), Winnipeg TNT Jan op, 2004.

5.Qb4 Qb4 6.cb4 Nf6 7.Nc3 d5 8.e3 Bf5 9.Nf3 Nbd7 10.Be2 e6 11.0–0 Bb4–/+ 12.Rac1 Bc3–+ 13.Rc3 0–0 14.a3 Ne4 15.Rb3 Nec5 16.Rc3? Ne4?? 17.Rb3–/+ Nec5 18.Rc3–+ Ne4?? 19.Rb3–/+ Rfb8 20.Rd1 Ndf6 21.d3. METSAR – FatMaHa. ChessWorld.net, 2005.

4.Qb3 d5

5.e3 a4 6.Qc2 e5 7.a3 Nf6 8.c4 Nbd7 9.Nc3 Qa7 (Better is 9...d4!? 10.ed4 A) 10...Qd4? 11.Nd5 (11.Na4?! Qe4 12.Qe4 Ne4+/–) 11...Qa7 12.Nc7 Kd8 13.Na8+–; B) 10...ed4=) 10.cd5+/– Nd5 (10...cd5? 11.Nb5 Qb8 12.Nc7 Kd8 13.Na8 Qa8 14.Bb5+–) 11.Nd5 cd5 12.Bb5 Bd6 13.Qf5 Ke7 (Better is 13...Qb6!? 14.Be5 Qb5 15.Bd6 Ra6+/–) 14.Qg5+– Nf6 15.Be5 Be5 16.Qe5 Be6 17.Ne2 Qb8 18.Qb8 (18.Qd4 Qa7+–) 18...Rhb8+/– 19.Nc3 Bd7 20.Bd7 Kd7 21.f3 Re8 22.Kf2 Re6 23.Rab1 Rc6 24.Rhc1 Ke6 25.b5 Rc4 26.d3 Rcc8 27.Rb4 Nd7 28.Ke2 Nb6 29.Kd2 f5 30.Rcb1 (30...Rc7 31.e4+/–; 30.e4!?+–) 1–0. Diener,Rudolf – Grund,Karl, corr 1981–83.

3.c3 d5

4.a4 e5 5.b5 Qb6 6.e3 Bd7 7.c4 f6 8.cd5 cb5 9.Qb3 b4 10.Bc4 Bd6 11.d4 e4 12.Nd2 f5 13.Be2 Nf6 14.Nc4 Qa6 15.Ne5 Qa7 16.Nd7 Nbd7 (< 16...Kd7 17.Rc1+=) 17.Bb5 0–0 18.Ne2 Nb6 19.Rc1 Kh8 (19...Nbd5? 20.Bc4 Kh8 21.Bd5 Nd5 22.Qd5+–) 20.Nf4 Bf4 21.ef4 Nbd5 22.Rc5 Rad8 23.0–0 b6 24.Rc6 Qb8 25.Re6 Qf4 26.Re5? Qg5 27.Qh3? Qg4 28.Qg3 Qg3 29.fg3 g6 30.h3 Rc8 31.Rf2 Rc7 32.Ba6? Ra7 33.Bc4 Ne3 34.Bb3 Rd7 35.Rb5? Rb8?? 36.d5= Kg7 37.g4 h6 38.Re2 f4–/+ 39.g3 g5 40.gf4 gf4 41.Kf2 Kg6 42.Be5? Nfg4 43.hg4 Ng4 44.Ke1 Ne5 45.Re4 Nd3 46.Kf1 Nc5 47.Re6 Ne6 48.de6 Re7 49.Bc2 Kf6 50.Bf5 Rc8 51.Bg4 Rc1 52.Kg2 Ra1 53.Rb6 Ra4 54.Rb5 Re6 55.Be6 Ke6 56.Rb6 Kf5 (57.Rh6 b3–+) 0–1. Satka,Martin – Augustat,Siegfried (1840), 9sen.LSEM Brandenburg, 2001.

4.b5 Nf6 5.bc6 Nc6 6.e3 e5 7.Bb5 Bd6 8.Ne2 0–0 9.d4 Bd7 10.de5 Ne5 11.Bd7 Qd7 12.0–0 (12.Ba3 Rfe8–/+) 12...Neg4 (12...Nc4 13.Bc1–/+) 13.g3 (13.h3 Ne5–/+) 13...Qf5 14.Nf4 Bf4–+ 15.ef4 Rfe8 16.Nd2 Ra6 17.Nf3 Rae6 18.Nh4 Qe4 19.h3 Nh6 20.Nf3 Qc4 21.Ne5 Qc8 22.g4= Nd7 23.Nd7 Qd7 24.c4 Ng4 25.f5 Re2–/+ 26.Qd5 Qd5 27.cd5 Nh2 28.Kh2= Rb2 29.Kg3 Kf8 30.Rfd1 Ree2 31.d6 Ke8 32.Rac1 Rec2 33.Re1 Kd7 34.Rc2 Rc2 35.Re7 Kd6 36.Rb7 Rc7 37.Rb6 Kc5 38.Rb8 a4 39.f3 Rd7 40.a3 f6 41.Rb4 Ra7 42.h4 ½–½. Hjortstam,Kurt – Pommerel,Wim, email 4AMM–F, 1998.

4.d4 Nf6 5.e3 Bf5 6.Bd3 Bd3 7.Qd3 e6 8.Nf3 ab4 9.cb4 Bb4 10.Bc3 Na6 11.0–0 0–0 12.Nbd2 b6 13.Ne5 Qc7 14.Rfb1 c5 15.Ndf3? (15.a3!? cd4 16.Bb4 Nb4 17.ab4 Qe5 18.ed4–/+) 15...Ne4 (15...c4 16.Qc2 Bc3 17.Qc3–+) 16.Bd2? (Better is 16.Bb4 Nb4 17.Qb3–+) 16...f6 17.Ng4 h5 18.Nh6 gh6 19.a3 c4 20.Qe2 Nd2 21.Nd2 Bc3 22.Ra2 Nb4! 0–1. pascals1975 – Steinutz, ChessWorld.net, 2002.

4.e3 ab4 5.cb4 Bf5 6.Nf3= e6 7.Qb3 Nf6 8.d4 Nbd7 9.Nbd2 Bd6 10.Be2 0–0 11.0–0 h6 12.h3 Re8 13.b5 c5–/+ 14.dc5 Nc5 15.Qd1 Na4 16.Be5 Be5 17.Ne5 Nc3 18.Qe1 Qd6 19.Ndf3 Ra3 20.g4 Be4–+ 21.Bd3 Bd3 22.Nd3 Nb5 23.Qb4 Qb4 24.Nb4 Nc3 25.Kg2 Rea8 26.Rfc1 Na2 27.Na2 Ra2 28.Rc8 Rc8 29.Ra2 Ne4 30.Nd4 g6 31.f3 Nd6 32.Kf2 Kg7 33.Ke2 Rc1 34.Ra8 Rh1 35.Rd8 Nc4 36.Rd7 Kf6 37.Rb7 Rh2 38.Kd3 Rh3 39.e4 Nd6 40.Rd7 Ne4 41.Ke3 Ng5 42.Rd6 h5 43.gh5 Rh5 44.Ra6 Rh4 45.Ne2 Rb4 46.Nd4 Rd4 47.Kd4 Nf3 48.Ke3 Ne5 49.Ra1 Kg5 50.Rg1 Ng4 51.Kd4 f5 52.Re1 Kf6 53.Kc5 f4 54.Kd4 Kf5 55.Kd3 f3 56.Rf1 Kf4 57.Rg1 f2 (58.Rc1 Nh2–+) 0–1. Gnirk,Hajo – Baumann,Fritz, corr SOK–88–17, 1988.

4.e3 Bf5 5.b5 Nf6 6.c4 e6 7.a4 Bb4 8.Ba3 0–0 9.Bb4 ab4 10.Qb3 cb5 11.cb5 Qa5 12.Nf3 Rc8 13.Qb2 Rc2 14.Qb3 Nbd7 15.d3 Rc1 16.Kd2 Rac8 17.Ra2 Nc5 18.Qb2 b3 19.Kc1 ba2 20.Qa2 Nd3 21.Kd1 Rc1 22.Ke2 Ne4 23.Nfd2 Ng5 24.f4 Re1# 0–1. Saili – BlackDemon (2610), FICS, 2013.

4.e3 Nf6 5.Nf3 e6 6.b5 Bd6 7.c4 0–0 8.a3 Nbd7 9.bc6 bc6 10.Qc2 Qc7 11.Be2 e5 12.cd5 cd5 13.Qc7 Bc7 14.0–0 Rb8 15.Rc1 Bd6 16.Bc3 Nc5 17.Rd1 Nfd7 (17...Nb3 18.Ra2 Bg4 19.d3–/+) 18.a4 (18.d4 Na4 19.Ba5+= (19.de5?! Rb1 20.Rdb1 Nc3 21.ed6 Ne2 22.Kf1 Nc3+=)) 18...Nb3+= 19.Ra2 d4 (better is 19...e4!? 20.Nd4 Nd4 21.Bd4 Nc5+=) 20.ed4+= ed4 21.Bd4 Nd4 22.Nd4 Rb4? (22...Bb7 23.Nc3+/–) 23.Nf5 Bf4 24.Nc3 Bb7 25.Bb5 Nc5 26.d4 Ne4 27.Ne7 Kh8 28.Ncd5 Bd6 29.Nb4 ab4? 30.Nf5 Bf4 31.Rb2 Nc3 32.Ra1 Nd5 33.g3 Bg5 34.Nd6 Ba8 35.f4 Bf6 36.Rd2 Be7 37.Nf5 1–0. Bernhard,Alfred (1920) – Zemskyi,Evgen (1805), Ruhrgebiet playoff, 2004.

4.Nf3 Nf6 5.e3 ab4 6.cb4 Bf5 7.a3 e6 8.Be2 Bd6 9.d3 Nbd7 10.Nh4 g5 11.Nf5 ef5 12.Nc3 Qe7 13.Qd2 Rg8 14.0–0 Kf8 15.Kh1 Rg6 16.d4 Nb6 17.Qc2 Rh6 18.h3 Ne4 19.Kg1 g4 20.Bd3 Bc7 21.Be4 fe4 22.g3 Rh3 23.Kg2 Qf6 24.Qe2 Qf3 25.Qf3 ef3 26.Kg1 Re8 27.Bc1 Bf4 28.gf4 Re6 29.Ne2 fe2 30.Re1 Reh6 31.Re2 f5 32.Bb2 Nc4 33.Bc3 Nd6 0–1. Kilpatrick – Ross, corr SCCA candidates 1986–88.

4.e3 e5

5.b5 Nf6 6.Qe2 (6.c4 Bd6=+) 6...Bd6–/+ 7.d4 0–0 8.Qd3 (8.Ba3 Ba3 9.Na3 Qe7=+) 8...e4–/+ 9.Qd1 cb5 10.Bb5 Nc6 11.Qa4 Bd7 12.Ba3 Ba3 (12...Nb4! 13.cb4 ab4–+) 13.Na3=+ Rc8 14.Ne2 Qc7 15.0–0 Ng4 16.g3 Qd6 17.c4 Nh2?? (17...Qh6 18.h4 Ne3 19.fe3 Qe3 20.Kh1 Qe2 21.cd5 Qg4–+) 18.Rfc1?? (Better is 18.Kh2 Bg4 19.Ng1+–) 18...Nf3 19.Kf1 Bh3# 0–1. Taulien,Christian – Luehrig,Walter, remoteschach.de, 2002.

5.c4 =+.

3.c3 e5

4.ba5 Qa5 5.e4 (5.c4 Bc5 6.Bc3 Bb4=) 5...d5 6.d3 (6.ed5 cd5 7.Nf3 Nc6=+) 6...Nf6–/+ 7.ed5 cd5 8.Nf3 Nc6 Black gets the initiative 9.Be2 e4 10.de4 (10.Nfd2 Bf5=+) 10...de4–/+ 11.Nfd2 Bc5 (11...Qg5 12.g3–/+) 12.Nb3 Qb6 13.Nc5 Qb2 14.Nb3 (14.Nd2 Qc3 15.Rc1 Qa5–/+) 14...Ra2 15.Ra2 Qa2 16.0–0 0–0 17.N1d2 Be6 18.Bc4 Bc4 19.Nc4 Rd8 20.Qb1 Qa6 21.Ne3 Qd3 22.Nc5 Qc3 23.Rc1 Qb4 24.Qb4 Nb4 25.Nb7 Re8 26.g3 g6 27.Nd6 Rd8 28.Ne4 Ne4 29.Rc4 Nf2 30.Rb4 Rd2 31.Ng4 Nh3 32.Kf1 Kg7 33.Ke1 Ra2 34.Rb7 h5 35.Ne5 Rf2 36.Rd7 Rf6 37.Rd2?? Re6–+ 38.Re2 Ng1 39.Re3 Re5 (40.Kd2 Kf6–+) 0–1. zuzi – flea, Live Game Caissa's Web, 2004.

4.ba5 d5 5.c4 dc4 6.Be5 Nf6 7.Nf3 Be6 8.Nc3 Nbd7 9.Bf6 Qf6 10.Ne4 Qg6 11.Neg5 Ra5 12.Ne6 fe6 13.Qc1 b5 14.g3 Bc5 15.Bg2 0–0 16.0–0 Qe4 17.Qe1 Ra3 18.Nh4 Qc2 (better is 18...Qe5!?–/+) 19.Bc6= Ne5 20.Bb5 Rb8 21.Rb1 Rb6 22.Rc1 Qa2 23.Be8 Rb2 24.Nf3?? (better is 24.Rb1–/+) 24...Rf3!–+ 25.Ra1 (25.ef3 Nf3) 25...Qb3 26.Qc1 Rg3! 27.Kh1 (27.hg3 Qg3) 27...Qb7 28.f3 Rh3 29.Kg2 Rh4 30.Ra5 Bd4 31.Qe1 Rh6 32.h4 c3 33.dc3 Nd3 34.Qd1 Nf4 35.Kg3 Ne2 36.Kg4 Qc7 37.f4 Qa5 38.Qd3 0–1. Dingbat – VLAD1, ICS, 1999.

4.b5 d5 5.e3 Nf6 6.c4 d4 (6...Bd6!?+=) 7.Nf3= de3 8.de3 (8.Be5? ef2 9.Kf2 Ng4 10.Ke1 Ne5–+; worse is 8.Ne5 ef2 9.Kf2 Bd6–/+; worse is 8.fe3 e4 9.Nd4 Bd6+=) 8...Qd1 9.Kd1 Ne4 10.Ke1 f6 11.Bd3 Nc5 12.Bc2 Be6 Black plans a4 13.Nbd2 a4 14.Ba3 Nd3 15.Bd3 Ba3 16.Be4 Bb2 17.Rb1 a3 18.Ke2 0–0 19.h3? (better is 19.Rhg1!?+=) 19...cb5–+ 20.Bb7 Ra7 21.Bd5 Bd5 22.cd5 Na6 23.Ne1 Nb4 24.Nd3 Nd5 25.Nb2 Nc3 (25...ab2?! 26.Rb2 Rfa8 27.Ra1–/+) 26.Kf3 Nb1 (26...ab2?! 27.Rb2 Rfa8 28.Rc1 Na2 29.Rc6+=) 27.Rb1 ab2 28.Rb2 Rb8 29.Ne4 Kf7 30.g4 g6 31.Kg3 Ke7 32.f4 f5 33.Ng5 Kf6 34.Rc2 ef4 35.ef4 b4 36.Rb2 (36.Rd2 Ra3 37.Nf3 Rba8 38.Rd6 Ke7–+) 36...Ra3 37.Kg2 Rb7 38.Nf3 fg4 39.hg4 h5 40.gh5 gh5 41.Nd4 Re3 42.Rc2 (42.Nc6 Re4–+) 42...Rc3 43.Rb2 Rc4 44.Ne2 Rd7 45.Ng3 h4 (45...h4 46.Ne2 Rd3–+) 0–1. marekt (2200) – deepthough (2140), gameknot.com, 2015.

4.c4 d6 +=.

4.e3 Nf6 5.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4).

4.e4 Nf6 5.Bd3 (5.a3 d5 6.ed5 cd5=+) 5...Qb6 (5...d5!? 6.Qc2 Bd6–/+) 6.Nf3=+ ab4 7.Ne5 d5 8.c4 (better is 8.ed5!? bc3 9.Bc3 Nd5 10.0–0=) 8...de4–/+ 9.Be4 (9.Be2 Be7–/+) 9...Ne4–+ 10.g4?? (better is 10.Qe2 Qf2 11.Qf2 Nf2 12.Kf2–/+) 10…Qf2# 0–1. piotrek3054 – thotares (1615), internet, 2007.

4.a3 d5

5.d3 Nf6 6.Nf3 Bd6 7.Nbd2 0–0 (7...Be6 8.e3=+) 8.e4 (8.c4 ab4 9.ab4 Ra1 10.Qa1 dc4 11.dc4 Bb4 12.Be5 Ne4–/+) 8...ab4 (8...Nbd7 9.Be2=+) 9.ab4 Ra1 10.Qa1 Re8 11.Be2 Be6 (11...Nh5 12.0–0=+) 12.0–0 (12.Ng5 Bg4=+) 12...de4 (12...Nh5 13.Qa7 b6 14.g3=+) 13.Ne4 (13.de4 Nbd7=) 13...Ne4 (13...Na6 14.Nd6 Qd6 15.d4 ed4 16.Nd4=) 14.de4 b6 (14...Nd7 15.Qa7 b6 16.Rd1=) 15.b5 (15.Bc1 Qf6=) 15...c5 (15...Qc7!?=) 16.c4 Nd7 (16...f6 17.Qc1=) 17.Rd1 (< 17.Ne5 Be5 18.Be5 Ne5 19.Qe5 Bc4–/+) 17...Qe7 (17...Qc7 18.Ng5+=) 18.Ne5+/– Ne5 (18...Be5 19.Be5 Bg4 20.Bg4 Ne5 21.Be2+=) 19.Be5 Be5 20.Qe5 f6 21.Qd6 Qb7 22.f3 (22.Qc6 Qc6 23.bc6 Kf7+/–) 22...Bf7 (22...Qa7 23.Qc6 Bf7 24.Kf1+/–) 23.Ra1+– Re6 (23...Qb8 24.Qb8 Rb8 25.Kf2+–) 24.Qd8 (24.Qd5 Qe7+–) 24...Be8 (24...Re8!? 25.Qd3 Qe7+/–) 25.Ra8 Kf7 (25...Qe7 26.Qe7 Re7 27.Kf2+–) 26.Rb8 (better is 26.Rc8!? Re7 27.Rb8+–) 26...Qd7+/– 27.Qd7 ½–½. alaamattar (2135) – sturmhut (2135), net–chess.com, 2005.

5.d4 ed4 6.Qd4 Nf6 =+.

5.e3 b5 6.c4 (better is 6.a4!? ab4 7.cb4 ba4 8.Be5=) 6...dc4–/+ (6...ab4?! 7.cb5 f6 8.Nf3+=) 7.Be5 ab4 8.d3 (8.ab4 Ra1 9.Ba1 Na6–/+) 8...Nd7 (8...ba3 9.dc4 Qd1 10.Kd1–+) 9.ab4 (better is 9.Bd4 ba3 10.dc4–+) 9...Ne5 10.Ra8 Bb4 11.Nd2 c3 12.Qa1 (12.Be2 cd2 13.Kf1 Qd7–+) 12...cd2 13.Kd1 Ng4 14.Nh3 (14.Ke2 c5 15.Nf3 Ne7–+) 14...N8f6 15.Qb2 (15.Be2 0–0 16.Kc2–+) 15...Nd5 16.Ke2 Nde3! 17.fe3 (17.Ra1 Qe7 18.Qb4 Qb4 19.fe3–+) 17...Qd3! 18.Kd3 d1Q (18...d1Q 19.Ke4 Qd5 20.Kf4 Bd6 21.Qe5 Qe5 22.Kf3 Qe3#) 0–1. Oertenberg,Goeran – Andersson,Lars H, corr SSKK 2–99, 1987.

5.e3 Bd6 +=.

4.Qb3 d5

5.e3 Nf6 6.Nf3 e4 7.Ne5 –/+.

5.Nf3 Nd7 =+.

5.e3 Bd6

6.c4 ab4 7.cd5 Nf6 =+.

6.Ne2 Be6 7.ba5=+ Nd7 (7...Qc7 8.Ba3 Ba3 9.Na3 Qa5 10.Nc2=+) 8.Qb7= Ne7 9.Qb3 Nc5 10.Qb6?? (better is 10.Qc2=) 10...Nd3–+ 11.Kd1 Bc7 12.Qb3 Rb8 13.Qa3 Bd6 14.Qa4 (14.Kc2 Ba3 15.Ba3 Nf2 16.Rg1 Qa5 17.Nc1 Bf5 18.d3 Rb1 19.Rb1 Qa3 20.Be2–+) 14...Nb2 (15.Ke1 Na4–+) 0–1. Gnirk,Hajo – Tuchtenhagen,Harald, corr SOK–88–19, 1988.

6.Ne2 Nf6–/+ 7.ba5 Ra5 8.Ba3 c5 –/+.

6.Ne2 Nf6 7.ba5 Ra5 8.c4 –/+.

6.Ne2 Nf6–/+ 7.d4 0–0 8.Nd2 (8.de5 Be5 9.Nd4 a4–/+) 8...a4 (8...Nbd7 9.ba5 Qa5 10.c4–/+) 9.Qc2 (9.Qa3 Nbd7–/+) 9...a3 (9...Nbd7 10.a3–/+) 10.Bc1 e4 11.Qb3=+ Be6 12.Ba3 Nbd7 13.g3 Nb6 14.Bg2 Nc4 15.Nc4 dc4 16.Qb2 Ra7 17.Qc1 Qa8 18.Bb2 Ra2 19.Ra2 Qa2 20.0–0 Ra8 21.Rd1 Bg4 22.Rd2 Qa6 23.Qc2 Qb5 24.Be4= Qh5 25.Bg2 Bf3 26.Nf4 Bf4 27.ef4 Re8 28.Qd1?? Bd1–+ (29.f3 Bf3–+) 0–1. Weir,Robert – Bateman,Greg, CompuServe, 1994.

6.Ne2 Nf6–/+ 7.d4 Nbd7 8.a3 –/+.

4.c4 ab4!

5.Be5 d5 6.cd5 Qd5 7.Nf3 Nd7 =+.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.Qc2 dc4–/+ 9.Bc4 Nc4 10.Qc4 Be6 11.Qe4 Nf6 12.Qc2 (12.Qf4 Be7–/+) 12...Qd5 (12...Ra2 13.Nf3–+) 13.f3 (13.Nf3 Ra2 14.Ra2 Qa2–/+) 13...Bf5 (13...Ra2!? 14.Ra2 Qa2–/+) 14.Qd1–/+ Bd3 15.a3 (15.Nh3 Be7–/+) 15...Qc4 (15...Qg5 16.g3–/+) 16.ab4 Ra1 17.Ba1 Nd5 18.Ne2 (18.Nc3 Nb4 19.Kf2 Bc2–+) 18...Nb4 (better is 18...Be2!? 19.Qe2 Qa2–+) 19.Kf2–/+ Bc2 (19...Bd6 20.Nd4–/+) 20.Qf1 Nd3 21.Kg3 Bd6–+ 22.f4 Rg8 23.h4 g5 24.hg5 Rg5 25.Kh2 Rh5 26.Kg3 Rh1 27.Qh1–/+ Nc5 28.Nec3 Nb3 29.Bb2–/+ Qd3 30.Qh3 Kd8 31.Qh6 Be7 32.Qh1 b5 33.Na3 b4 (34.Nc2 bc3 35.Bc3 Qc2–+; 33...Qd2?! 34.Nc2 Qc2 35.Qd1 Qd1 36.Nd1–+) 0–1. Diener,Rudolf – Schuehler,Ernst, corr, 1982.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5 Na4 9.Qb3 (9.Be5!?=) 9...Nb2=+ 10.Qb2 Qd5 11.d4 Nf6 12.Nf3 Bd6 13.Bd3 (13.Nbd2 0–0=+) 13...0–0 (13...Be6 14.0–0=+) 14.Nbd2=+ b5 15.Qc2 Re8 16.Rc1 The backward pawn on c6 becomes a target 16...Bb7 17.Ra1 Ra3 18.Qb1 (18.Nb3 Bc8=+) 18...Rea8 Now all is on a2 19.Nb3?? (19.Ne4!? Ne4 20.Be4=+) 19...Qb3!–/+ 20.Be2?? (20.Qb3 Rb3) 20...Qb1 (20...Qc3 21.Kd1–+) 21.Rb1 Ra2 (22.Bd1 R8a3–+) 0–1. Rosner,Dirk – Hoffmann,K, corr SOK–89–51, 1989.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5 Nd5 9.e4 Qe7 10.Qe2 =+.

5.Be5 d5 6.e3 Nd7 7.Bb2 Nb6 8.cd5!? Nd5 9.Nf3 =+.

5.Be5 d5 6.e3 Nd7 7.Bd4 Ngf6 =+.

5.Be5 d5 6.e3 Be6 7.cd5 Bd5 8.d4 =+.

4.e3 d5

5.b5 cb5 6.Bb5 Bd7 7.c4 Bb5 8.cb5 =+.

5.b5 Bf5 6.a4 Nf6 7.c4 Nbd7 8.d4 (8.Nf3!?=+) 8...ed4 9.Bd4 Bb4 10.Nd2 (10.Bc3 0–0–/+) 10...Ne4 11.Ngf3 Bg4 12.Be2?? (better is 12.Ra2 Nd2 13.Rd2–/+) 12...Bf3–+ 13.Bf3 Nd2 (13...Bd2?! 14.Kf1 Bb4 15.cd5 Nd2 16.Kg1 cb5 17.ab5–+) 14.Be2 (14.Bh5 c5 15.Bg7–+) 14...Qh4 15.Qc2 (15.Qd2 Bd2 16.Kd2 0–0 17.bc6 bc6–+) 15...Ne4 16.Kd1 Nf2 17.Kc1 Nh1 18.g3 (18.bc6 bc6 19.cd5 cd5–+) 18...Qh2 19.Bg7 (19.cd5 Ng3 20.Bc4 Qc2 21.Kc2 Rc8 22.bc6 bc6–+) 19...Rg8 20.Bc3 Bc3 21.Qc3 Ng3 22.Bd1 Ne2 23.Be2 Qe2 24.bc6 Rg1 (25.Qe1 Re1#) 0–1. maxii – timekillu, Live Game Caissa's Web, 2004.

5.b5 Bf5 6.Nf3 e4 7.Nd4 Bd7 =.

5.d4 ab4 6.de5 Nd7 7.Nf3 f6 8.e6 Nb6 9.Be2 Na4 10.Qb3 Nb2 11.Qb2 Qa5 12.0–0 Be6 13.Nd4 Bd7 14.cb4 Qb4 15.Qb4 Bb4 16.a3 Ne7 17.Nb3 Bd6 18.Nc3 Ra3 19.Ra3 Ba3 20.Ra1 Bb4 21.Ra8 Bc8 22.Na4 0–0 23.Nb6 Bf5 24.Rf8 Kf8 25.Kf1 Kf7 26.h3 c5 27.g4 Bc2 28.Nc1 Ba5 29.Na8 c4 30.Kg2 Bd2 31.Na2 Bb3 32.Nc7 Ba2 33.Nb5 Ke6 34.Nd4 Kd6 35.Kf3 Bb1 36.Nb5 Kc5 37.Nc7 Be4 38.Kf4 g5 39.Kg3 b5 40.Ne6 Kd6 41.Nf8 c3 42.f3 c2 0–1. aji – ChessManiac, VOGChess.

4.Nf3 e4

5.Nd4 ab4 6.cb4 Bb4 7.Nc6 dc6 8.Bg7 +=.

5.Ng1 Nf6 =+.

3.c3 Nf6

4.a3 d5 5.Nf3 Nbd7 6.d3 e5 7.Nbd2 e4 8.de4 de4 9.Nd4 e3 10.fe3 Nd5 (10...Ne5 11.N4f3 Neg4 12.Nc4–/+) 11.Nc4= N7b6 12.Nb6 Nb6 13.Qd3 Na4 14.Bc1 Be7 15.g3 ab4 16.cb4 c5 17.bc5 Nc5 (worse is 17...Bc5 18.Bg2+/–) 18.Qb5 Bd7 19.Qc4 Ne4 20.Qd5 Qc7 (20...Nf6!? 21.Qb3 Ne4=) 21.Qe4+= Qc3 The pressure on the isolated pawn grows 22.Kf2 Qa1 23.Qb7 Rd8 24.Bg2 Qc3 25.Bb2 Qc8 26.Qe4 Kf8 27.a4 h5 (27...Ba4? 28.Rc1 Qa6 29.Nf5+–) 28.Nf3 Qc5 (28...Bc6 29.Bg7 Kg7 30.Qe7 Qf5+/–) 29.Ne5+/– Be8 30.Rc1 Qb6 31.Bd4 Qf6 (31...Qe6!?+=) 32.Nf3 Bd7?? (better is 32...Qg6 33.Qg6 fg6+–) 33.Bf6+– Bf6 1–0. marekt (2075) – rcm06 (2145), gameknot.com, 2014.

4.a3 e6 5.e3 d5 6.f4 Be7 7.Nf3 Nbd7 8.Be2 0–0 9.0–0 b5 10.d4 a4 11.Ne5 Ne5 12.fe5 Ne4 13.Nd2 f5 14.ef6 Nf6 15.Bd3 Qc7 16.e4 e5 17.ed5 Nd5 18.Qh5 g6 19.Bg6 Nf6 20.Qh6 hg6 21.Qg6 Kh8 22.c4 Be6 23.Rf3 Bg8 24.de5 Bh7 25.Rh3 Rg8 26.Qh6 Ng4 27.e6 Bf6 28.Bf6 Nf6 29.Qf6 Qg7 30.Qg7 Rg7 31.Rf1 Re8 32.Re1 Rge7 33.Rhe3 Kg7 34.Nf3 Kf6 35.Nd4 Bg8 36.Nc6 Rc7 37.Rf1 Kg7 38.Ne5 1–0. lllllll21 (1650) – salutoromano (1635), kurnik, 2012.

4.Qa4 b5 5.Qb3 Na6 6.e3 ab4 7.Nf3 e6 8.Be2 Nc5 9.Qc2 Ra2 10.Ra2 b3 11.Qb3?? (11.Qd1 ba2 12.Na3–+) 11...Nb3 12.0–0 Nc5 13.d4 Nce4 14.Ra8 Bd6 15.Na3 (15.Ne5 Nd5–+) 15...Ba3 (15...Qc7!? 16.Nc2–+) 16.Ba3 Nc3 17.Bd3 Nfe4 18.Ne5 f6 19.Nf3 (19.Bb4 Qc7 (< 19...fe5 20.Ba5–+) 20.Nf3 d6–+) 19...Qc7 (19...d6 20.Ra1–+) 20.g3 (20.Bb4 Nd5 21.Ba5 Qb7 22.Rc8 Qc8 23.Be4 d6–+) 20...d6 21.Bb4 c5 22.dc5 Nc5 (22...dc5 23.Bc3 Nc3 24.Rc1–+) 23.Bc3 (23.Rc1 Nd3 24.Rc3 Nc5–+ (24...Nb4?? 25.Rc7 0–0 26.Raa7+–)) 23...Nd3 24.Bd4 (24.Rd1 Qc3 25.Rd3 Qc1 26.Kg2 Qc6 27.Rc8 Qc8 28.Rd6 Qb7–+) 24...0–0 (24...Qc6 25.Rfa1 e5 26.Nh4 ed4 27.Nf5–+) 25.Ra7 (25.Ra3 Qc6 26.Nh4 Nc1–+) 25...Bb7 (better is 25...Qc6 26.Rd1 Qf3 27.Rd3–+) 26.Kg2 (26.e4–+) 26...Qc6 27.Rb7 Qb7 28.Rd1 Ne5 29.Be5 fe5 30.Rd6 Qf3 31.Kh3 Rf6 32.Rd8 Kf7 33.Rb8 Rh6 0–1. MasterofDisaster – michelle, Live Game Caissa's Web, 2004.

4.e3 ab4 5.cb4 e6 6.a3 b5 7.Nc3 e5 8.Qf3 d5 9.Qg3 Nbd7 10.d3 d4 11.ed4 ed4 12.Nce2 Nh5 13.Qf3 Ne5 14.Qe4 Qd5 15.Qd5 cd5 16.Nd4 Nf4 17.Kd2 Rb8? (better is 17...Ng4!? 18.Nb5 Rb8+/–) 18.Re1 f6 19.g3 Nfg6 20.f4 Be7 21.fe5 fe5 22.Nc6 Bg5 23.Kd1 Rb6 24.Ne5 0–0 25.Bg2 Rd8 26.Ngf3 Ne5 27.Be5 Rg6 28.Bc7 Rf8 29.Ne5 Ra6 30.h4 Bh6 31.Bd5 Be6 32.Be6 Re6 33.Rhf1 Rc8 34.Nd7 Re1 35.Ke1 Bc1 36.Ba5 g6 37.d4 Rc3 38.Nf6 Kh8 39.Nd5 Ra3 40.Bc7 Kg8 (40...Ra7+–) 41.Ne7 Kg7 42.Be5 Kh6 43.g4 Re3 44.Kd1 Re5 45.de5 (45.Kc1?! Re7 46.g5 Kh5+–) 45...Be3 46.Rf7 g5 47.Nf5 (47...Kg6 48.Rf6#) 1–0. MacChess 4.0 – MacChess 5.0, 2000.

4.e3 e5 5.d4 ed4 6.Qd4 =+.

4.Nf3 ab4 5.cb4 d5 =.

4.Nf3 d6 5.g3 e5 6.Bg2 ab4 7.cb4 e4 8.Nd4 Qb6 9.Qb3 Na6 10.a3 Bd7 11.Qc2 Rc8 (11...d5 12.f3 c5 13.Nb3 cb4 14.Bd4–/+) 12.Nb3= d5 (13.Bf6 gf6=) =. Grund,Karl – Sterle, corr, 1982.

4.Nf3 e6 5.e3 d5 6.Bd3 Bd6 7.0–0 e5 8.Bc2 e4 9.Nd4 Bh2! 10.Kh2 Ng4 11.Kg3 Qg5 (better is 11...h5 12.Qe2 h4 13.Kh3 Qd6 14.Qg4 Bg4 15.Kg4 h3 16.Be4 de4–+) 12.Qe2?? (12.f4 Qg6 13.Qe2 Ne3 14.Kh2 Nf1 15.Qf1–/+) 12…Ne3 (12...Ne3 13.Qg4 Qg4 14.Kh2 Qg2) 0–1. Jokmin,Alex – Pietrzak,Wojciech, SF–2009–0–00040, 2009.

4.e3 d5

5.a3 e5 6.c4 =+.

5.b5 e5 6.c4 Bd6 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3 0–0 10.Qc2 cb5 11.Bb5 Nc6 12.Bc6 bc6 13.Nf3 Re8 14.d3 Ba6 15.Rd1 Qd7 16.0–0 e4 17.de4 Bf1 18.Rf1 Qe6 19.e5 Bb4 20.Bb2 Qa2 21.Ng5 g6 Black plans a4 22.Ra1 Qd5 23.Ne4 Be7 24.f4 a4! 25.Ra4 Ra4 26.Qa4 Rb8 27.Bc3 Rb1 28.Kf2 Qd3 29.Qd4 Bh4 30.Kf3 Qf1 31.Kg4 Qg2 32.Kh4 Qh2 33.Kg5 Qh5 34.Kf6 Qf5 35.Ke7 Rb7 (35...Rb7 36.Kd8 Rb8 37.Kc7 Qc8 38.Kd6 Qd8 39.Kc5 Qb6 40.Kd6 c5 41.Kd5 Qe6 42.Kc5 Qb6 43.Kd5 Qb7 44.Kd6 Rd8 45.Kc5 Rc8 46.Kd6 Qc6 47.Ke7 Qe6#) 0–1. usingprogram (2020) – mindja (1790), kurnik, 2012.

5.Nf3 ab4 6.cb4 e5 7.Ne5 Bb4 =.

5.Nf3 Nbd7 =+.

5.a3 Bf5

6.c4 dc4 7.Bc4 ab4 8.ab4 Ra1 9.Ba1 –/+.

6.c4 dc4 7.Bc4 b5 8.Be2 –/+.

6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Ne4 =.

6.Nf3 e6 =+.

6.c4 e6

7.b5 cb5 8.cb5 Bd6 9.Nc3 =+.

7.b5 Bd6 8.cd5 cd5 9.Nf3 0–0 =+.

7.b5 Bd6 8.Nf3 0–0 9.Nc3 dc4 10.Bc4 b6 11.d3 =.

7.b5 Bd6 8.Nf3 0–0 9.Nc3 Nbd7 10.bc6 (10.Nd4 Bg4 11.f3 c5=+) 10...bc6= 11.Nd4 Qc7 (11...Ne5 12.Nf5 ef5 13.c5=) 12.cd5 Nd5 13.Nf5 ef5 14.Qh5 Qb6 15.Na4+= Qb3 16.Qf5 N7f6 17.Bf6 Nf6 18.Nc3 Ba3 19.Bd3 Rfe8 20.Bc2 White is in command 20...Qb4 21.0–0 Ra7 22.Rfb1+= Qc5 23.Rb3 Qf5 24.Bf5 Bd6 25.Rb6 Bf8 26.Rc6 Re5 27.Bc2 Rc5 28.Rc5 Bc5 29.Nb5 Ra8 30.d4 Bb4 31.f3 Nd5 32.Kf2 h5 33.Be4 Rd8 34.h3 Kf8 35.Bd3 Ke7 36.e4 Nf4 37.Bc4 Rc8 38.Bb3 Kf6 39.e5 Ke7 40.Nd6 Bd6 41.ed6 Kd6 42.Ra5 f6 43.Ra7 Rc3 44.Rb7 Rd3 45.h4 Rd4 46.Ke3 Ke5 47.Re7 Kd6 48.Rg7 Rb4 49.Bf7 Ke5 50.g3 Ng2 51.Kf2 Rb2 52.Kg1 Ne3 53.f4 Kf5 54.Bh5+– Rg2 55.Kh1 Rd2 56.Bg6 Kg4+= 57.Be4 Kh3 58.Kg1 f5 59.Bc6 Ng4 60.Rd7 Rc2 61.Ba4 Rg2 62.Kf1 Ne3 63.Ke1 Rg3 64.h5+/– Ng2 65.Kd2 Nf4 66.h6 Rg6 67.h7 Rh6 68.Bc2+– Kg4 69.Rg7 Kf3 70.Bf5 Rh2 71.Kd1 Nd5+/– 72.Kc1 Ne3? 73.Bd3 Rh1 74.Kd2 Rd1 75.Kc3 Rh1 76.Rf7 Kg3 77.Kd4 Nd1 78.Rf3! Kg2 79.Be4 Rh7 80.Rf7 Kg3 81.Rh7 Nf2 82.Rg7 Kf4 83.Rf7 Kg3 84.Rf3 Kg2 85.Rc3 Kf1 86.Rc1 Ke2 87.Bd3 Kd2 88.Rc2 Ke1 89.Re2 Kf1 90.Re8 Kg2 91.Rg8 Kh3 92.Rf8 Kg3 93.Be2 Nh3 94.Rg8 Kf2 95.Bd3 Nf4 96.Bc4 Kf3 97.Rg7 Kf2 98.Ke4 Nh5 99.Rf7 Ke1 100.Kf3 Kd2 101.Kg4 Kc3 102.Be6 Kd4 103.Kh5 Ke5 104.Bf5 Kd4 105.Rd7 Kc5 106.Be6 Kb4 107.Rc7 Kb5 108.Bd7 Kb4 109.Kg4 Kb3 110.Kf3 Kb4 111.Ke4 Kb3 112.Kd4 Kb4 113.Rc4 Kb3 114.Ba4 Kb2 115.Rc2 Kb1 116.Kd3 Ka1 117.Bb3 Kb1 118.Kc3 Ka1 119.Rc1# 1–0. NN – GrandMasterChess 80286, 1992.

7.b5 Bd6 8.Nf3 0–0 9.Nc3 Nbd7 10.bc6 (10.Nd4 Bg4 11.f3 c5=+) 10...bc6= 11.Nd4 Qc7 (better is 11...Ne5 12.Nf5 ef5 13.cd5 cd5=) 12.g3 (better is 12.cd5!? Nd5 13.Nd5 cd5 14.Nf5 ef5 15.Rc1+=) 12...Bg4 (12...Rfb8 13.Ra2 Be4 14.Ne4 de4 15.f3–/+) 13.Be2 Rfb8 (13...Be2 14.Qe2 dc4 15.Qc4–+) 14.Rb1 Bh3 15.Nf3 Bf5–/+ 16.d3 h6 17.Nd4=+ dc4 18.Nf5= ef5 19.dc4 Nc5 20.Qc2 Qd7 21.0–0+= Rb3 22.Rfd1 Qe6 23.Rd2 Re8 24.Qd1 Bc7 25.Qf1 Be5 26.Rc2 Rd8 27.a4 Qe8 28.Qe1 Ng4 29.h3= Nf6 30.Bf1 Bc7 31.Rd2= Rd2 32.Qd2 Nfe4 33.Ne4 Qe4 34.Qd1 f6 35.Bg2 Qc4 36.Bc6+= Rd3 Attacking the isolated pawn on a4 37.Qe2 Qe6 38.Bb5 Rd5 39.Bc4+/– Na4 40.Bd4 Kh7?? 41.Qa2 Nc3 42.Bc3 Qc6 43.Bd5 Qc3 44.Rb7 Bd6 45.Be6 Qe1 46.Kh2 a4 47.Qc2 Qa1 48.Bf5 Kg8 49.Qc4 Kh8 50.Rb8! Bb8 51.Qc8# 1–0. NN – GrandMasterChess 80286, 1992.

7.c5 ab4 8.ab4 Ra1 9.Ba1 b6 10.Bf6 Qf6 =+.

4.Nf3 d5

5.d4 ab4 6.cb4 Bf5 7.a3 =+.

5.d4 Bg4 6.e3 (6.ba5 Qa5 7.Ne5 Bf5=+) 6...ab4 7.cb4 e5 8.Bc3 (8.Qb3!? e4 9.Ne5=+) 8...e4 9.h3 Bh5 10.g4 Ng4! 11.hg4 Bg4 12.Be2 ef3 13.Bf3 Bf5 (13...Be6 14.Nd2–/+) 14.Nd2 (14.b5 Ra7–/+) 14...Nd7 (14...Na6 15.Qb3–/+) 15.Qb3 (15.b5 Qg5–/+) 15...Nf6 (better is 15...g5–/+) 16.0–0–0? (better is 16.a4!?–/+) 16...Be7 (16...h5 17.Kb2–+) 17.Rde1 (17.Rdg1 g6–+) 17...Ne4 (better is 17...h5–+) 18.b5?? (18.Be4 de4 19.Reg1–+) 18...Ra3 19.Qc2 (19.Qb1 Rc3 20.Kb2 Ng3–+) 0–1. Knight – berzelius, mySchach.de, 2003.

5.e3 Bg4 6.b5 e5 7.c4 e4 8.h3 Bh5 (8...ef3?! 9.hg4 fg2 10.Bg2 dc4 11.Qa4 cb5 12.Qb5 Nbd7 A) worse is 13.Qb7 Rb8 14.Bf6 Qf6 (14...gf6? 15.Qe4 Be7 16.Na3+–) 15.Qe4 Kd8=; B) 13.Bb7?! Rb8 14.Qc6 Ng4=; C) 13.g5+=) 9.g4 Ng4 (9...ef3 10.gh5 dc4 11.Qf3+=) 10.hg4 Bg4 11.Be2 ef3 12.Bf3 Bf3 13.Qf3 dc4 14.Rh5 f6 15.Qe4 Be7 16.a4 (16.Qc4!? cb5 17.Qe4+=) 16...Qd3–/+ 17.Qe6 Qg6 18.Rh4 Nd7 19.bc6 Nc5 20.cb7 Rb8 (20...Ne6?? 21.ba8Q (21.ba8R?! Bd8=) 21...Bd8 22.Qd5+–) 21.Qc6 Kf7 22.Qd5 Ke8 23.Rc4 Qg5 (23...Nb7 24.Ba3 Ba3 25.Na3+–) 24.Qc6 Kf7 25.Ba3 Nd3 26.Ke2 Rhd8 (26...Ba3!? 27.Na3 Rhd8 28.Qc7 Kg6+/–) 27.Qc7+– Qh5 28.f3 Nb4 29.Bb4 ab4 30.Rb4 Qe5 (30...Kf8 31.Rg4 g6+–) 31.Qe5 fe5 32.Rb5 Rd7 33.a5 (33.Nc3 Rbb7 34.Re5 Bf6+–) 33...Rdb7 34.Rb7 Rb7 35.a6 Ra7 36.Nc3 Bd8 37.Kd3 Ke6 38.Nb5 Ra8 39.a7 Kf5 (39...Kd7 40.Rc1+–) 40.Ra6 1–0. marekt – Odensboldklub, chessworld.net, 2015.

3.Bc3 ab4

4.Bb4 d6 5.d4 =.

4.Bb4 Nf6 5.Bc3 e6 6.d3 d5 7.e3 Bd6 8.h3 e5 9.Nd2 0–0 10.Be2 Bf5 11.Bg4 Qd7 12.Bf5 Qf5 13.Qf3 Qe6 14.a4 Nbd7 15.Ne2? (15.e4 d4 16.Bb2 Nc5–+) 15...Rfb8 (15...e4 16.de4 de4 17.Ne4 Ne4 18.Qg4 Nc3 19.Nc3–+) 16.0–0?? (16.Qg3 d4! 17.Bb2 Re8–/+) 16...b5?? (better is 16...e4 17.de4 de4 (17...Ne4?! 18.Ne4 de4 19.Qh5+=) 18.Ne4 Ne4–+) 17.ab5–/+ Ra1 18.Ra1 Rb5 19.Ra6? Rb6 20.Ra8+= Rb8 21.Rb8 Bb8 22.Ng3 g6 23.Qe2 Bd6 24.Ba5 c5 25.c4 d4 26.ed4 cd4 27.Nde4 Ne4 28.Ne4 f5 29.Ng5 Qe7 30.Bd2 Nc5 31.Nf3 Kg7 32.Bb4 Kf6 33.Bc5 Bc5 34.Nh2 e4–/+ 35.g4 ed3 36.Qd3 Qe4 37.Qf3 Qf3 38.Nf3 fg4 39.hg4 d3 40.Kf1 Bb4 41.Nd4 h5 42.gh5 gh5 43.Nb3 h4 44.c5 h3 45.Kg1 d2?? 46.Nd2= Bd2 47.Kh2 ½–½. Pilecki,Jozef – Krawczyk,Zbigniew (1755), Rowy/Fregata Poland, 2009.

4.Bb4 Qb6

5.a3 c5 6.Bc3 d5 7.d4 Nc6 8.dc5 Qc5 9.e3 e5 10.Nf3 Bd6 11.Be2 Nf6 12.Nfd2 0–0 13.Nb3 Qb6 14.0–0 Be6 15.Bb2 Rad8 16.N1d2 Qc7 17.Re1 e4 18.Nf1 Nd7 19.Nd4 Nd4 20.Bd4 Ra8 21.a4 Rfc8 22.c3 Ne5 23.Qb3 Nc4 24.Bc4 dc4 25.Qc2 f5 26.g3 Qf7 27.Qe2 g5 28.Nd2 Rc6 29.f4 g4 30.Ra2 Rca6 31.Rea1 b5 32.Ne4 fe4 33.ab5 Ra2 34.Ra2 Ra2 35.Qa2 Qb7 36.Qa5 Be7 37.b6 Bd5 38.Qb5 Kf7 39.Kg2 Qc6 40.Qa5 Qa8 41.Qb5 Ke6 42.Kg1 Qb7 43.Qe8 Qa8 44.f5 Kd6 45.Be5 Ke5 46.Qe7 Kf5 47.Qh7 Ke5 48.Qg7 ½–½. Scheidacker,Mirko – Jaeger,Andre, Berlin, 1997.

5.Bc3 d6 =.

5.Bc3 Nf6 =.

3.c4 Qb6

4.a3 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4).

4.a3 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1).

4.c5 Qb4 5.Ba3 Qg4 =+.

4.d3 ab4

5.e4 =+.

5.Nf3 =+.

4.d3 Qb4

5.Bc3 Qb6 6.Nd2 =+.

5.Bc3 Qb6 6.e4 =+.

5.Bc3 Qc5 6.e4 d5 7.cd5 cd5 8.Nf3 Nc6 =+.

5.Bc3 Qc5 6.e4 d5 7.Nf3 de4 8.de4 a4 9.Be2 =.

5.Bc3 Qc5 6.e4 d5 7.Nf3 Nf6 8.e5= Nfd7 9.Nbd2 b5 10.d4 Qb6 11.c5 Qd8 12.Bd3 g6 13.a4 b4=+ 14.Bb2 Bg7 15.Nb3 Ba6 16.0–0 Bd3 17.Qd3 0–0 18.Rae1 Na6 19.Ng5 e6 20.f4 Qc7 21.Kh1 Rfb8 22.Rf3 h6–/+ 23.Nh3 Ra7 24.Ref1 Kh8 25.g4 White intends f5 25...Raa8 26.Ng1 Rb7 27.Ne2 Nf8 28.Ng3 White prepares the advance f5 Raa7 29.f5= gf5 30.gf5 Nh7 31.fe6 fe6 32.Qg6 Qc8 33.Nh5 Ng5 34.Rf6 Bf6=+ 35.Qh6 Nh7 36.Nf6 Rf7=+ 37.Rf3 Rg7?? 38.Rh3 Qd8 39.Bc1 Raf7=+ 40.Bf4 Re7 41.Bg3 Qc7?? 42.Qf4?? Rg6=+ 43.Rh5 Rf7 44.Bh4 Rgf6?? 45.Bf6+– Kg8 46.Rh3 Nf6 47.Qg5 Rg7 48.Qf6 Qd7 49.Nd2?? Nc7+/– 50.Nf3 Ne8 51.Qh6+= Kf7 52.Ng5 Ke7 53.Rf3 Qc8 54.h4 Kd7? 55.Qe6 Kc7 56.Rf8 Rg5 57.Rf7 Kb8 58.Qc8 Kc8 59.hg5 b3 60.g6 b2 61.Rf1 Ng7 62.Rb1 Nf5 63.Rb2 Ng3 64.Kg2 Nf5 65.Rf2 Nh4 66.Kg3 Ng6 67.Rf6 Kd7 68.Rg6 Kc7 69.Rd6 Kc8 70.e6 Kc7 71.e7 Kb7 72.e8Q Ka7 73.Qc6 Kb8 74.Rd8 Ka7 75.Ra8# 1–0. NN – KnightStalker 80286 12Mh, 1993.

5.Bc3 Qc5 6.e4 d5 7.Nf3 Nf6 8.e5 Nfd7 9.Nbd2 b5 10.e6 fe6 11.Nb3 Qb6=+ 12.cb5 cb5 13.Be2 Nc6–/+ 14.Nbd4 Nd4 15.Bd4 Qd6 16.Bc3 e5 17.0–0 Bb7 18.Rc1 e6 19.d4 e4 20.Ne5 Ne5 21.de5 Qd7 22.Bh5 g6 23.Bg4 Bh6–+ 24.Rc2 e3 25.Qd4 ef2 26.Qf2 Rf8 27.Bf3 Rf5 28.Qb6 Ra6 29.Qd4 Bg7 30.Qe3 Ra8 31.Bb2 Rf7 32.Kh1 Rc8 33.Rcf2 Rc6 34.Qd2 a4 35.Qe1 Rc7 36.Qd2 Rf5 37.Qe1 Qe7 38.Qe3 b4 39.Bd4 Ba6 40.Rd1 Bc4 41.Rb1 Rc8 42.Rc1 Qh4 43.Rd1 Rc7 44.Qe1 Qe7 45.Rb2 Rb7 46.Rf2 Rb8 47.Rc1 Rd8 48.Rb2 Bh6 49.Rd1 Bf8 50.Rf2 Bg7 51.Rb2 Rb8 52.Rf2 Rf7 53.Qe3 Rc8 54.Rc1 Rc7 55.Bb6 Rc6 56.Bd4 Rc8 57.Bb6 h6 58.Qd4 Rc6 59.Ba5 Ra6?? 60.Bb6?? Be5 61.Qe5 Rb6 62.Qd4 Rc6 63.Qh8 Qf8 64.Qe5 Qc5 65.Rd2 Qd6?? 66.Qd6–/+ Rd6 67.Rc4 dc4 Exploits the pin 68.Rd6–/+ a3 69.Re6=+ Re7 70.Bc6 Kf7 71.Re4 Re4–/+ 72.Be4 Kf6 73.Bd5=+ c3 74.Bb3 Ke5 75.Kg1 Kd4 76.Bc2 Ke3 77.Kf1 Kd2 78.Bb3 c2 79.Bc2 Kc2 80.g4 b3 81.ab3 a2 (82.b4 a1Q 83.Kg2 Qa8 84.Kf2 Qf8 85.Ke3 g5 86.Ke4 Qf4 87.Kd5 Qb4 88.h3 Qe7 89.Kd4 Qe6 90.Kc5 Qe3 91.Kd5 Qh3 92.Ke5 h5 93.gh5 g4 94.Kd6 g3 95.h6 Qh6 96.Ke7 g2 97.Kd8 Qc6 98.Ke7 g1Q 99.Kf7 Qgg6 100.Ke7 Qgf6#) 0–1. SuperForte5 – KnightStalker, 1993.

3.d4 ab4–/+

4.Qd2 Na6 =+.

4.e4 e6 5.Nf3 –/+.

4.e4 Nf6 5.Bd3 –/+.

4.e4 d5

5.Nd2 de4 6.Ne4 Qd5 7.Nc5 –+.

5.Nd2 Nf6–/+ 6.Bd3 de4 7.Ne4 Ne4 8.Be4 e6 =+.

5.Nd2 Nf6 6.e5 Nfd7 7.Ngf3 g6 8.Bd3 Bg7 9.c4 bc3 10.Bc3 0–0 11.0–0 b6 12.a4 c5 13.Rc1 Nc6 14.dc5 bc5 15.e6 fe6 16.Bg7 Kg7 17.Bb5 Bb7 18.Qe2 Rf6 19.Qd3 c4 20.Qc3 e5 21.Bc6 Bc6 22.Ne5 Ne5 23.Qe5 e6 24.Nb3 Qe7 25.Nd4 Ba4 26.Rfe1 Re8 27.h3 Qd7 28.Rc3 Kf7 29.f4 Kg7 30.Kh1 h6 31.Rce3 Qa7 32.Ra3 Qd7 33.Rae3 Qb7 34.Rc3 Qb6 35.Rcc1 Qa7 36.Re2 Qf7 37.Rd2 Ra8 38.Re2 Bd7 39.Rd2 Ra3 40.Rb2 Bc8 41.Rb8 Qd7 42.Rb6 Kf7 43.Rc6 Ra7 44.Rd6 Qe8 45.Rb6 Ra2 46.Rb8 Qd7 47.Nb5 Ra6 48.Rb1 Kg7 49.Nc3 Ra7 50.Rd1 Rb7 51.Ne4 Rb8 52.Qf6 Kg8 53.Qg6 Kf8 54.Nf6 Qf7 55.Qh6 Ke7 56.Ng4 Rb3 57.Qh4 Kd6 58.Ne5 Qc7 59.Qf6 Kc5 60.Rc1 Qd6 61.Qg7 Ba6 62.Qa7 Kb5 63.Rd1 Ra3 64.Rb1 Rb3 65.Rb3 cb3 66.Qe3 Ka4 67.Qc1 Bb7 68.Qa1 Qa3 69.Qd4 Kb5 70.Qd3 Ka4 71.Qd4 Kb5 72.Nd3 Qd6 73.g4 Qe7 74.Kg1 Ba8 75.g5 Qd6 76.g6 e5 77.Ne5 Qf6 78.Qc3 Qf4 79.Qb3 Ka5 80.Qa3 Kb5 81.Qb2 Ka5 82.Qa2 Kb6 83.Qf2 Qf2 84.Kf2 d4 85.Nd7 Ka7 86.Nf6 d3 87.Ke1 d2 88.Kd2 Bg2 89.g7 Bh3 90.g8Q Bf5 91.Qg7 Kb6 92.Ne8 Kc6 93.Qc7 Kd5 94.Qa5 Ke6 95.Ng7 Kd7 96.Qf5 Kc6 97.Qe5 Kd7 98.Qd5 Ke7 99.Qe6 Kd8 100.Qd6 Kc8 101.Ne6 Kb7 102.Nc5 Kc8 103.Qd7 Kb8 104.Qb7 1–0. COMP – COMP, 1994.

5.Nd2 Nf6–/+ 6.e5 Bg4 7.f3 Bf5 8.ef6 ef6 9.Ne2 +/–.

5.ed5 cd5 6.Nf3 Nf6 –/+.

5.ed5 Qd5 6.a3 Qe4 7.Ne2 e6 =+.

3.e3 ab4

4.c4 bc3 (--> 4.c3 bc3).

4.Nf3 b5 =+.

4.Nf3 d5 =+.

4.Qg4 d5 5.Qb4=+ e5 6.Qb3 Qc7 7.c4 Be6 8.Nf3 Nd7 9.d4 Bd6 10.Ng5 Ngf6 11.c5 Be7 12.g3 Rb8 13.Ne6= fe6 14.Bh3 Kf7 15.0–0 b6 16.cb6 Rb6 17.Qc2 Rhb8 18.Bc3 Bb4 19.Rc1 Bc3= 20.Nc3 ed4 21.Na4 Rb4–/+ Black gets in control 22.ed4 Rd4 23.Qe2? Ra4–+ 24.Qe6 Kf8 25.Rc6 Qe5 26.Qe5 Ne5 27.Rc7 Rd8 28.Rb1?! d4 29.Rbb7 d3 30.Bf1 d2 31.Be2 Re4 (32.Rg7 Re2 33.Rgf7 Nf7–+; < 31...Ra2 32.Kg2–+) 0–1. Kuhn,Heinz – Biegler,Markus, Saarland–chB, 1993.

4.c3 bc3–/+

5.Nc3 d5 6.Bd3 e5 7.f3 Bd6–+ 8.Nge2 Qh4 9.g3 Qh3 10.Kf2 Nf6 11.Qc2 Na6 12.a3 Nc5 13.Na2 e4 14.fe4 de4 15.Bc4 Bg4 16.Nf4 Bf4 17.ef4 Bf3 18.Bf6 gf6 19.Bf1 Qd7 20.Bg2 Qd4 (21.Ke1 Qa1 22.Nc1 Bg2 23.Qc5 Bh1–+) 0–1. Pietrzak,Wojciech – Luzuriaga,Norberto Horacio, Orang–Utan Invitational, 2002.

5.Nc3 Nf6 6.Nf3 d6 7.Be2 e5–/+ 8.0–0 Be7 9.d4 e4–/+ 10.Nd2 d5 11.Qc2 0–0 12.a4 Bd6 13.Qb3 Qc7 14.h3 Qe7 15.Ba3 Ne8 16.Bd6=+ Nd6 17.a5 Na6 18.Ba6 Ra6–/+ 19.Qb6?? Rb6–+ (20.ab6 Qg5–+) 0–1. alexy1 (1860) – kanza (2185), ICC, 2003.

4.Qg4 e5

5.Bd3 Nh6 6.Qg3 d6 7.f4 Nf5 8.Qf2 ef4 9.ef4 Be7 10.Ne2 Bh4 11.g3 Bf6 12.c3 0–0 13.0–0 Re8 14.a3 bc3 15.Nbc3 Na6 16.Rfe1 Nc5 17.Bc2 Nh6 18.Rab1 Bf5 19.Bf5 Nf5 20.Qf3 d5 21.g4 Nh4 22.Qh3 d4 0–1. Roos – Elzerman, email CTON 1996.

5.Qf3 d6 6.d4 –/+.

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

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